diff --git a/CREDITS b/CREDITS
index d78359f..1deb331 100644
--- a/CREDITS
+++ b/CREDITS
@@ -518,7 +518,7 @@
 E: zab@zabbo.net
 D: maestro pci sound
 
-M: David Brownell
+N: David Brownell
 D: Kernel engineer, mentor, and friend.  Maintained USB EHCI and
 D: gadget layers, SPI subsystem, GPIO subsystem, and more than a few
 D: device drivers.  His encouragement also helped many engineers get
diff --git a/Documentation/hwmon/f71882fg b/Documentation/hwmon/f71882fg
index 84d2623..de91c0d 100644
--- a/Documentation/hwmon/f71882fg
+++ b/Documentation/hwmon/f71882fg
@@ -22,6 +22,10 @@
     Prefix: 'f71869'
     Addresses scanned: none, address read from Super I/O config space
     Datasheet: Available from the Fintek website
+  * Fintek F71869A
+    Prefix: 'f71869a'
+    Addresses scanned: none, address read from Super I/O config space
+    Datasheet: Not public
   * Fintek F71882FG and F71883FG
     Prefix: 'f71882fg'
     Addresses scanned: none, address read from Super I/O config space
diff --git a/Documentation/hwmon/k10temp b/Documentation/hwmon/k10temp
index 0393c89..a10f736 100644
--- a/Documentation/hwmon/k10temp
+++ b/Documentation/hwmon/k10temp
@@ -9,8 +9,8 @@
   Socket S1G3: Athlon II, Sempron, Turion II
 * AMD Family 11h processors:
   Socket S1G2: Athlon (X2), Sempron (X2), Turion X2 (Ultra)
-* AMD Family 12h processors: "Llano"
-* AMD Family 14h processors: "Brazos" (C/E/G-Series)
+* AMD Family 12h processors: "Llano" (E2/A4/A6/A8-Series)
+* AMD Family 14h processors: "Brazos" (C/E/G/Z-Series)
 * AMD Family 15h processors: "Bulldozer"
 
   Prefix: 'k10temp'
@@ -20,12 +20,16 @@
     http://support.amd.com/us/Processor_TechDocs/31116.pdf
   BIOS and Kernel Developer's Guide (BKDG) for AMD Family 11h Processors:
     http://support.amd.com/us/Processor_TechDocs/41256.pdf
+  BIOS and Kernel Developer's Guide (BKDG) for AMD Family 12h Processors:
+    http://support.amd.com/us/Processor_TechDocs/41131.pdf
   BIOS and Kernel Developer's Guide (BKDG) for AMD Family 14h Models 00h-0Fh Processors:
     http://support.amd.com/us/Processor_TechDocs/43170.pdf
   Revision Guide for AMD Family 10h Processors:
     http://support.amd.com/us/Processor_TechDocs/41322.pdf
   Revision Guide for AMD Family 11h Processors:
     http://support.amd.com/us/Processor_TechDocs/41788.pdf
+  Revision Guide for AMD Family 12h Processors:
+    http://support.amd.com/us/Processor_TechDocs/44739.pdf
   Revision Guide for AMD Family 14h Models 00h-0Fh Processors:
     http://support.amd.com/us/Processor_TechDocs/47534.pdf
   AMD Family 11h Processor Power and Thermal Data Sheet for Notebooks:
diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt
index 22accb3..b24875b 100644
--- a/Documentation/power/runtime_pm.txt
+++ b/Documentation/power/runtime_pm.txt
@@ -501,13 +501,29 @@
 should be used.  Of course, for this purpose the device's run-time PM has to be
 enabled earlier by calling pm_runtime_enable().
 
-If the device bus type's or driver's ->probe() or ->remove() callback runs
+If the device bus type's or driver's ->probe() callback runs
 pm_runtime_suspend() or pm_runtime_idle() or their asynchronous counterparts,
 they will fail returning -EAGAIN, because the device's usage counter is
-incremented by the core before executing ->probe() and ->remove().  Still, it
-may be desirable to suspend the device as soon as ->probe() or ->remove() has
-finished, so the PM core uses pm_runtime_idle_sync() to invoke the
-subsystem-level idle callback for the device at that time.
+incremented by the driver core before executing ->probe().  Still, it may be
+desirable to suspend the device as soon as ->probe() has finished, so the driver
+core uses pm_runtime_put_sync() to invoke the subsystem-level idle callback for
+the device at that time.
+
+Moreover, the driver core prevents runtime PM callbacks from racing with the bus
+notifier callback in __device_release_driver(), which is necessary, because the
+notifier is used by some subsystems to carry out operations affecting the
+runtime PM functionality.  It does so by calling pm_runtime_get_sync() before
+driver_sysfs_remove() and the BUS_NOTIFY_UNBIND_DRIVER notifications.  This
+resumes the device if it's in the suspended state and prevents it from
+being suspended again while those routines are being executed.
+
+To allow bus types and drivers to put devices into the suspended state by
+calling pm_runtime_suspend() from their ->remove() routines, the driver core
+executes pm_runtime_put_sync() after running the BUS_NOTIFY_UNBIND_DRIVER
+notifications in __device_release_driver().  This requires bus types and
+drivers to make their ->remove() callbacks avoid races with runtime PM directly,
+but also it allows of more flexibility in the handling of devices during the
+removal of their drivers.
 
 The user space can effectively disallow the driver of the device to power manage
 it at run time by changing the value of its /sys/devices/.../power/control
diff --git a/Makefile b/Makefile
index dc67046..86f47a0 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 VERSION = 3
 PATCHLEVEL = 0
 SUBLEVEL = 0
-EXTRAVERSION = -rc5
+EXTRAVERSION = -rc6
 NAME = Sneaky Weasel
 
 # *DOCUMENTATION*
diff --git a/README b/README
index 8510017..0d5a7dd 100644
--- a/README
+++ b/README
@@ -1,6 +1,6 @@
-	Linux kernel release 2.6.xx <http://kernel.org/>
+	Linux kernel release 3.x <http://kernel.org/>
 
-These are the release notes for Linux version 2.6.  Read them carefully,
+These are the release notes for Linux version 3.  Read them carefully,
 as they tell you what this is all about, explain how to install the
 kernel, and what to do if something goes wrong. 
 
@@ -62,10 +62,10 @@
    directory where you have permissions (eg. your home directory) and
    unpack it:
 
-		gzip -cd linux-2.6.XX.tar.gz | tar xvf -
+		gzip -cd linux-3.X.tar.gz | tar xvf -
 
    or
-		bzip2 -dc linux-2.6.XX.tar.bz2 | tar xvf -
+		bzip2 -dc linux-3.X.tar.bz2 | tar xvf -
 
 
    Replace "XX" with the version number of the latest kernel.
@@ -75,15 +75,15 @@
    files.  They should match the library, and not get messed up by
    whatever the kernel-du-jour happens to be.
 
- - You can also upgrade between 2.6.xx releases by patching.  Patches are
+ - You can also upgrade between 3.x releases by patching.  Patches are
    distributed in the traditional gzip and the newer bzip2 format.  To
    install by patching, get all the newer patch files, enter the
-   top level directory of the kernel source (linux-2.6.xx) and execute:
+   top level directory of the kernel source (linux-3.x) and execute:
 
-		gzip -cd ../patch-2.6.xx.gz | patch -p1
+		gzip -cd ../patch-3.x.gz | patch -p1
 
    or
-		bzip2 -dc ../patch-2.6.xx.bz2 | patch -p1
+		bzip2 -dc ../patch-3.x.bz2 | patch -p1
 
    (repeat xx for all versions bigger than the version of your current
    source tree, _in_order_) and you should be ok.  You may want to remove
@@ -91,9 +91,9 @@
    failed patches (xxx# or xxx.rej). If there are, either you or me has
    made a mistake.
 
-   Unlike patches for the 2.6.x kernels, patches for the 2.6.x.y kernels
+   Unlike patches for the 3.x kernels, patches for the 3.x.y kernels
    (also known as the -stable kernels) are not incremental but instead apply
-   directly to the base 2.6.x kernel.  Please read
+   directly to the base 3.x kernel.  Please read
    Documentation/applying-patches.txt for more information.
 
    Alternatively, the script patch-kernel can be used to automate this
@@ -107,14 +107,14 @@
    an alternative directory can be specified as the second argument.
 
  - If you are upgrading between releases using the stable series patches
-   (for example, patch-2.6.xx.y), note that these "dot-releases" are
-   not incremental and must be applied to the 2.6.xx base tree. For
-   example, if your base kernel is 2.6.12 and you want to apply the
-   2.6.12.3 patch, you do not and indeed must not first apply the
-   2.6.12.1 and 2.6.12.2 patches. Similarly, if you are running kernel
-   version 2.6.12.2 and want to jump to 2.6.12.3, you must first
-   reverse the 2.6.12.2 patch (that is, patch -R) _before_ applying
-   the 2.6.12.3 patch.
+   (for example, patch-3.x.y), note that these "dot-releases" are
+   not incremental and must be applied to the 3.x base tree. For
+   example, if your base kernel is 3.0 and you want to apply the
+   3.0.3 patch, you do not and indeed must not first apply the
+   3.0.1 and 3.0.2 patches. Similarly, if you are running kernel
+   version 3.0.2 and want to jump to 3.0.3, you must first
+   reverse the 3.0.2 patch (that is, patch -R) _before_ applying
+   the 3.0.3 patch.
    You can read more on this in Documentation/applying-patches.txt
 
  - Make sure you have no stale .o files and dependencies lying around:
@@ -126,7 +126,7 @@
 
 SOFTWARE REQUIREMENTS
 
-   Compiling and running the 2.6.xx kernels requires up-to-date
+   Compiling and running the 3.x kernels requires up-to-date
    versions of various software packages.  Consult
    Documentation/Changes for the minimum version numbers required
    and how to get updates for these packages.  Beware that using
@@ -142,11 +142,11 @@
    Using the option "make O=output/dir" allow you to specify an alternate
    place for the output files (including .config).
    Example:
-     kernel source code:	/usr/src/linux-2.6.N
+     kernel source code:	/usr/src/linux-3.N
      build directory:		/home/name/build/kernel
 
    To configure and build the kernel use:
-   cd /usr/src/linux-2.6.N
+   cd /usr/src/linux-3.N
    make O=/home/name/build/kernel menuconfig
    make O=/home/name/build/kernel
    sudo make O=/home/name/build/kernel modules_install install
diff --git a/arch/arm/mach-at91/at91cap9.c b/arch/arm/mach-at91/at91cap9.c
index 17fae4a..f1013d0 100644
--- a/arch/arm/mach-at91/at91cap9.c
+++ b/arch/arm/mach-at91/at91cap9.c
@@ -223,15 +223,15 @@
 };
 
 static struct clk_lookup periph_clocks_lookups[] = {
-	CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc.0", &utmi_clk),
-	CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc.0", &udphs_clk),
+	CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc", &utmi_clk),
+	CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc", &udphs_clk),
 	CLKDEV_CON_DEV_ID("mci_clk", "at91_mci.0", &mmc0_clk),
 	CLKDEV_CON_DEV_ID("mci_clk", "at91_mci.1", &mmc1_clk),
 	CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
 	CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
 	CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tcb_clk),
-	CLKDEV_CON_DEV_ID("ssc", "ssc.0", &ssc0_clk),
-	CLKDEV_CON_DEV_ID("ssc", "ssc.1", &ssc1_clk),
+	CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
+	CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
 };
 
 static struct clk_lookup usart_clocks_lookups[] = {
diff --git a/arch/arm/mach-at91/at91cap9_devices.c b/arch/arm/mach-at91/at91cap9_devices.c
index cd850ed..dba0d8d 100644
--- a/arch/arm/mach-at91/at91cap9_devices.c
+++ b/arch/arm/mach-at91/at91cap9_devices.c
@@ -1220,7 +1220,7 @@
 {
 	if (portnr < ATMEL_MAX_UART) {
 		atmel_default_console_device = at91_uarts[portnr];
-		at91cap9_set_console_clock(portnr);
+		at91cap9_set_console_clock(at91_uarts[portnr]->id);
 	}
 }
 
diff --git a/arch/arm/mach-at91/at91rm9200.c b/arch/arm/mach-at91/at91rm9200.c
index b228ce9..83a1a3f 100644
--- a/arch/arm/mach-at91/at91rm9200.c
+++ b/arch/arm/mach-at91/at91rm9200.c
@@ -199,9 +199,9 @@
 	CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tc3_clk),
 	CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.1", &tc4_clk),
 	CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.1", &tc5_clk),
-	CLKDEV_CON_DEV_ID("ssc", "ssc.0", &ssc0_clk),
-	CLKDEV_CON_DEV_ID("ssc", "ssc.1", &ssc1_clk),
-	CLKDEV_CON_DEV_ID("ssc", "ssc.2", &ssc2_clk),
+	CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
+	CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
+	CLKDEV_CON_DEV_ID("pclk", "ssc.2", &ssc2_clk),
 };
 
 static struct clk_lookup usart_clocks_lookups[] = {
diff --git a/arch/arm/mach-at91/at91rm9200_devices.c b/arch/arm/mach-at91/at91rm9200_devices.c
index a0ba475..7227755 100644
--- a/arch/arm/mach-at91/at91rm9200_devices.c
+++ b/arch/arm/mach-at91/at91rm9200_devices.c
@@ -1135,7 +1135,7 @@
 {
 	if (portnr < ATMEL_MAX_UART) {
 		atmel_default_console_device = at91_uarts[portnr];
-		at91rm9200_set_console_clock(portnr);
+		at91rm9200_set_console_clock(at91_uarts[portnr]->id);
 	}
 }
 
diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c
index 1fdeb90..39f81f4 100644
--- a/arch/arm/mach-at91/at91sam9260_devices.c
+++ b/arch/arm/mach-at91/at91sam9260_devices.c
@@ -1173,7 +1173,7 @@
 {
 	if (portnr < ATMEL_MAX_UART) {
 		atmel_default_console_device = at91_uarts[portnr];
-		at91sam9260_set_console_clock(portnr);
+		at91sam9260_set_console_clock(at91_uarts[portnr]->id);
 	}
 }
 
diff --git a/arch/arm/mach-at91/at91sam9261_devices.c b/arch/arm/mach-at91/at91sam9261_devices.c
index 3eb4538..5004bf0 100644
--- a/arch/arm/mach-at91/at91sam9261_devices.c
+++ b/arch/arm/mach-at91/at91sam9261_devices.c
@@ -1013,7 +1013,7 @@
 {
 	if (portnr < ATMEL_MAX_UART) {
 		atmel_default_console_device = at91_uarts[portnr];
-		at91sam9261_set_console_clock(portnr);
+		at91sam9261_set_console_clock(at91_uarts[portnr]->id);
 	}
 }
 
diff --git a/arch/arm/mach-at91/at91sam9263_devices.c b/arch/arm/mach-at91/at91sam9263_devices.c
index ffe081b..a050f41 100644
--- a/arch/arm/mach-at91/at91sam9263_devices.c
+++ b/arch/arm/mach-at91/at91sam9263_devices.c
@@ -1395,7 +1395,7 @@
 {
 	if (portnr < ATMEL_MAX_UART) {
 		atmel_default_console_device = at91_uarts[portnr];
-		at91sam9263_set_console_clock(portnr);
+		at91sam9263_set_console_clock(at91_uarts[portnr]->id);
 	}
 }
 
diff --git a/arch/arm/mach-at91/at91sam9g45.c b/arch/arm/mach-at91/at91sam9g45.c
index 2bb6ff9..11e2141 100644
--- a/arch/arm/mach-at91/at91sam9g45.c
+++ b/arch/arm/mach-at91/at91sam9g45.c
@@ -217,11 +217,11 @@
 static struct clk_lookup periph_clocks_lookups[] = {
 	/* One additional fake clock for ohci */
 	CLKDEV_CON_ID("ohci_clk", &uhphs_clk),
-	CLKDEV_CON_DEV_ID("ehci_clk", "atmel-ehci.0", &uhphs_clk),
-	CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc.0", &utmi_clk),
-	CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc.0", &udphs_clk),
-	CLKDEV_CON_DEV_ID("mci_clk", "at91_mci.0", &mmc0_clk),
-	CLKDEV_CON_DEV_ID("mci_clk", "at91_mci.1", &mmc1_clk),
+	CLKDEV_CON_DEV_ID("ehci_clk", "atmel-ehci", &uhphs_clk),
+	CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc", &utmi_clk),
+	CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc", &udphs_clk),
+	CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.0", &mmc0_clk),
+	CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.1", &mmc1_clk),
 	CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
 	CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
 	CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tcb0_clk),
diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c
index 0567486..600bffb 100644
--- a/arch/arm/mach-at91/at91sam9g45_devices.c
+++ b/arch/arm/mach-at91/at91sam9g45_devices.c
@@ -1550,7 +1550,7 @@
 {
 	if (portnr < ATMEL_MAX_UART) {
 		atmel_default_console_device = at91_uarts[portnr];
-		at91sam9g45_set_console_clock(portnr);
+		at91sam9g45_set_console_clock(at91_uarts[portnr]->id);
 	}
 }
 
diff --git a/arch/arm/mach-at91/at91sam9rl.c b/arch/arm/mach-at91/at91sam9rl.c
index 1a40f16..29dff18 100644
--- a/arch/arm/mach-at91/at91sam9rl.c
+++ b/arch/arm/mach-at91/at91sam9rl.c
@@ -191,8 +191,8 @@
 };
 
 static struct clk_lookup periph_clocks_lookups[] = {
-	CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc.0", &utmi_clk),
-	CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc.0", &udphs_clk),
+	CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc", &utmi_clk),
+	CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc", &udphs_clk),
 	CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk),
 	CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk),
 	CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk),
diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c
index c296045f..aacb19d 100644
--- a/arch/arm/mach-at91/at91sam9rl_devices.c
+++ b/arch/arm/mach-at91/at91sam9rl_devices.c
@@ -1168,7 +1168,7 @@
 {
 	if (portnr < ATMEL_MAX_UART) {
 		atmel_default_console_device = at91_uarts[portnr];
-		at91sam9rl_set_console_clock(portnr);
+		at91sam9rl_set_console_clock(at91_uarts[portnr]->id);
 	}
 }
 
diff --git a/arch/arm/mach-at91/board-cap9adk.c b/arch/arm/mach-at91/board-cap9adk.c
index 1904fdf..cdb65d4 100644
--- a/arch/arm/mach-at91/board-cap9adk.c
+++ b/arch/arm/mach-at91/board-cap9adk.c
@@ -215,7 +215,7 @@
 	csa = at91_sys_read(AT91_MATRIX_EBICSA);
 	at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
 
-	cap9adk_nand_data.bus_width_16 = !board_have_nand_8bit();
+	cap9adk_nand_data.bus_width_16 = board_have_nand_16bit();
 	/* setup bus-width (8 or 16) */
 	if (cap9adk_nand_data.bus_width_16)
 		cap9adk_nand_smc_config.mode |= AT91_SMC_DBW_16;
diff --git a/arch/arm/mach-at91/board-sam9260ek.c b/arch/arm/mach-at91/board-sam9260ek.c
index d600dc1..5c24074 100644
--- a/arch/arm/mach-at91/board-sam9260ek.c
+++ b/arch/arm/mach-at91/board-sam9260ek.c
@@ -214,7 +214,7 @@
 
 static void __init ek_add_device_nand(void)
 {
-	ek_nand_data.bus_width_16 = !board_have_nand_8bit();
+	ek_nand_data.bus_width_16 = board_have_nand_16bit();
 	/* setup bus-width (8 or 16) */
 	if (ek_nand_data.bus_width_16)
 		ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
diff --git a/arch/arm/mach-at91/board-sam9261ek.c b/arch/arm/mach-at91/board-sam9261ek.c
index f897f84..b60c22b 100644
--- a/arch/arm/mach-at91/board-sam9261ek.c
+++ b/arch/arm/mach-at91/board-sam9261ek.c
@@ -220,7 +220,7 @@
 
 static void __init ek_add_device_nand(void)
 {
-	ek_nand_data.bus_width_16 = !board_have_nand_8bit();
+	ek_nand_data.bus_width_16 = board_have_nand_16bit();
 	/* setup bus-width (8 or 16) */
 	if (ek_nand_data.bus_width_16)
 		ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
diff --git a/arch/arm/mach-at91/board-sam9263ek.c b/arch/arm/mach-at91/board-sam9263ek.c
index 605b26f..9bbdc92 100644
--- a/arch/arm/mach-at91/board-sam9263ek.c
+++ b/arch/arm/mach-at91/board-sam9263ek.c
@@ -221,7 +221,7 @@
 
 static void __init ek_add_device_nand(void)
 {
-	ek_nand_data.bus_width_16 = !board_have_nand_8bit();
+	ek_nand_data.bus_width_16 = board_have_nand_16bit();
 	/* setup bus-width (8 or 16) */
 	if (ek_nand_data.bus_width_16)
 		ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
diff --git a/arch/arm/mach-at91/board-sam9g20ek.c b/arch/arm/mach-at91/board-sam9g20ek.c
index 7624cf0..1325a50 100644
--- a/arch/arm/mach-at91/board-sam9g20ek.c
+++ b/arch/arm/mach-at91/board-sam9g20ek.c
@@ -198,7 +198,7 @@
 
 static void __init ek_add_device_nand(void)
 {
-	ek_nand_data.bus_width_16 = !board_have_nand_8bit();
+	ek_nand_data.bus_width_16 = board_have_nand_16bit();
 	/* setup bus-width (8 or 16) */
 	if (ek_nand_data.bus_width_16)
 		ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
diff --git a/arch/arm/mach-at91/board-sam9m10g45ek.c b/arch/arm/mach-at91/board-sam9m10g45ek.c
index 063c95d..33eaa13 100644
--- a/arch/arm/mach-at91/board-sam9m10g45ek.c
+++ b/arch/arm/mach-at91/board-sam9m10g45ek.c
@@ -178,7 +178,7 @@
 
 static void __init ek_add_device_nand(void)
 {
-	ek_nand_data.bus_width_16 = !board_have_nand_8bit();
+	ek_nand_data.bus_width_16 = board_have_nand_16bit();
 	/* setup bus-width (8 or 16) */
 	if (ek_nand_data.bus_width_16)
 		ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
diff --git a/arch/arm/mach-at91/include/mach/system_rev.h b/arch/arm/mach-at91/include/mach/system_rev.h
index b855ee7..8f48660 100644
--- a/arch/arm/mach-at91/include/mach/system_rev.h
+++ b/arch/arm/mach-at91/include/mach/system_rev.h
@@ -13,13 +13,13 @@
  * the 16-31 bit are reserved for at91 generic information
  *
  * bit 31:
- *	0 => nand 16 bit
- *	1 => nand 8 bit
+ *	0 => nand 8 bit
+ *	1 => nand 16 bit
  */
-#define BOARD_HAVE_NAND_8BIT	(1 << 31)
-static int inline board_have_nand_8bit(void)
+#define BOARD_HAVE_NAND_16BIT	(1 << 31)
+static inline int board_have_nand_16bit(void)
 {
-	return system_rev & BOARD_HAVE_NAND_8BIT;
+	return system_rev & BOARD_HAVE_NAND_16BIT;
 }
 
 #endif /* __ARCH_SYSTEM_REV_H__ */
diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index 8214724..fe00830 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -333,6 +333,7 @@
 	struct physdev_map_pirq map_irq;
 	int shareable = 0;
 	char *name;
+	bool gsi_override = false;
 
 	if (!xen_pv_domain())
 		return -1;
@@ -349,11 +350,32 @@
 	if (pirq < 0)
 		goto out;
 
-	irq = xen_bind_pirq_gsi_to_irq(gsi, pirq, shareable, name);
+	/* Before we bind the GSI to a Linux IRQ, check whether
+	 * we need to override it with bus_irq (IRQ) value. Usually for
+	 * IRQs below IRQ_LEGACY_IRQ this holds IRQ == GSI, as so:
+	 *  ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 low level)
+	 * but there are oddballs where the IRQ != GSI:
+	 *  ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 20 low level)
+	 * which ends up being: gsi_to_irq[9] == 20
+	 * (which is what acpi_gsi_to_irq ends up calling when starting the
+	 * the ACPI interpreter and keels over since IRQ 9 has not been
+	 * setup as we had setup IRQ 20 for it).
+	 */
+	if (gsi == acpi_sci_override_gsi) {
+		/* Check whether the GSI != IRQ */
+		acpi_gsi_to_irq(gsi, &irq);
+		if (irq != gsi)
+			/* Bugger, we MUST have that IRQ. */
+			gsi_override = true;
+	}
+	if (gsi_override)
+		irq = xen_bind_pirq_gsi_to_irq(irq, pirq, shareable, name);
+	else
+		irq = xen_bind_pirq_gsi_to_irq(gsi, pirq, shareable, name);
 	if (irq < 0)
 		goto out;
 
-	printk(KERN_DEBUG "xen: --> pirq=%d -> irq=%d\n", pirq, irq);
+	printk(KERN_DEBUG "xen: --> pirq=%d -> irq=%d (gsi=%d)\n", pirq, irq, gsi);
 
 	map_irq.domid = DOMID_SELF;
 	map_irq.type = MAP_PIRQ_TYPE_GSI;
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 673e968..0ccccb6 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1232,7 +1232,11 @@
 {
 	struct {
 		struct mmuext_op op;
+#ifdef CONFIG_SMP
 		DECLARE_BITMAP(mask, num_processors);
+#else
+		DECLARE_BITMAP(mask, NR_CPUS);
+#endif
 	} *args;
 	struct multicall_space mcs;
 
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 4d46441..0a893f7 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1207,13 +1207,17 @@
 	if (ret)
 		return ret;
 
-	seq_printf(m, "power context ");
-	describe_obj(m, dev_priv->pwrctx);
-	seq_printf(m, "\n");
+	if (dev_priv->pwrctx) {
+		seq_printf(m, "power context ");
+		describe_obj(m, dev_priv->pwrctx);
+		seq_printf(m, "\n");
+	}
 
-	seq_printf(m, "render context ");
-	describe_obj(m, dev_priv->renderctx);
-	seq_printf(m, "\n");
+	if (dev_priv->renderctx) {
+		seq_printf(m, "render context ");
+		describe_obj(m, dev_priv->renderctx);
+		seq_printf(m, "\n");
+	}
 
 	mutex_unlock(&dev->mode_config.mutex);
 
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 2b79588..e178702 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1266,30 +1266,6 @@
 
 	intel_modeset_gem_init(dev);
 
-	if (IS_IVYBRIDGE(dev)) {
-		/* Share pre & uninstall handlers with ILK/SNB */
-		dev->driver->irq_handler = ivybridge_irq_handler;
-		dev->driver->irq_preinstall = ironlake_irq_preinstall;
-		dev->driver->irq_postinstall = ivybridge_irq_postinstall;
-		dev->driver->irq_uninstall = ironlake_irq_uninstall;
-		dev->driver->enable_vblank = ivybridge_enable_vblank;
-		dev->driver->disable_vblank = ivybridge_disable_vblank;
-	} else if (HAS_PCH_SPLIT(dev)) {
-		dev->driver->irq_handler = ironlake_irq_handler;
-		dev->driver->irq_preinstall = ironlake_irq_preinstall;
-		dev->driver->irq_postinstall = ironlake_irq_postinstall;
-		dev->driver->irq_uninstall = ironlake_irq_uninstall;
-		dev->driver->enable_vblank = ironlake_enable_vblank;
-		dev->driver->disable_vblank = ironlake_disable_vblank;
-	} else {
-		dev->driver->irq_preinstall = i915_driver_irq_preinstall;
-		dev->driver->irq_postinstall = i915_driver_irq_postinstall;
-		dev->driver->irq_uninstall = i915_driver_irq_uninstall;
-		dev->driver->irq_handler = i915_driver_irq_handler;
-		dev->driver->enable_vblank = i915_enable_vblank;
-		dev->driver->disable_vblank = i915_disable_vblank;
-	}
-
 	ret = drm_irq_install(dev);
 	if (ret)
 		goto cleanup_gem;
@@ -2017,12 +1993,7 @@
 	/* enable GEM by default */
 	dev_priv->has_gem = 1;
 
-	dev->driver->get_vblank_counter = i915_get_vblank_counter;
-	dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
-	if (IS_G4X(dev) || IS_GEN5(dev) || IS_GEN6(dev) || IS_IVYBRIDGE(dev)) {
-		dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
-		dev->driver->get_vblank_counter = gm45_get_vblank_counter;
-	}
+	intel_irq_init(dev);
 
 	/* Try to make sure MCHBAR is enabled before poking at it */
 	intel_setup_mchbar(dev);
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 609358f..013d304 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -765,14 +765,6 @@
 	.resume = i915_resume,
 
 	.device_is_agp = i915_driver_device_is_agp,
-	.enable_vblank = i915_enable_vblank,
-	.disable_vblank = i915_disable_vblank,
-	.get_vblank_timestamp = i915_get_vblank_timestamp,
-	.get_scanout_position = i915_get_crtc_scanoutpos,
-	.irq_preinstall = i915_driver_irq_preinstall,
-	.irq_postinstall = i915_driver_irq_postinstall,
-	.irq_uninstall = i915_driver_irq_uninstall,
-	.irq_handler = i915_driver_irq_handler,
 	.reclaim_buffers = drm_core_reclaim_buffers,
 	.master_create = i915_master_create,
 	.master_destroy = i915_master_destroy,
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index eddabf6..f245c58 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -997,8 +997,6 @@
 
 extern int i915_suspend(struct drm_device *dev, pm_message_t state);
 extern int i915_resume(struct drm_device *dev);
-extern void i915_save_display(struct drm_device *dev);
-extern void i915_restore_display(struct drm_device *dev);
 extern int i915_master_create(struct drm_device *dev, struct drm_master *master);
 extern void i915_master_destroy(struct drm_device *dev, struct drm_master *master);
 
@@ -1033,33 +1031,12 @@
 extern int i915_irq_wait(struct drm_device *dev, void *data,
 			 struct drm_file *file_priv);
 
-extern irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS);
-extern void i915_driver_irq_preinstall(struct drm_device * dev);
-extern int i915_driver_irq_postinstall(struct drm_device *dev);
-extern void i915_driver_irq_uninstall(struct drm_device * dev);
-
-extern irqreturn_t ironlake_irq_handler(DRM_IRQ_ARGS);
-extern void ironlake_irq_preinstall(struct drm_device *dev);
-extern int ironlake_irq_postinstall(struct drm_device *dev);
-extern void ironlake_irq_uninstall(struct drm_device *dev);
-
-extern irqreturn_t ivybridge_irq_handler(DRM_IRQ_ARGS);
-extern void ivybridge_irq_preinstall(struct drm_device *dev);
-extern int ivybridge_irq_postinstall(struct drm_device *dev);
-extern void ivybridge_irq_uninstall(struct drm_device *dev);
+extern void intel_irq_init(struct drm_device *dev);
 
 extern int i915_vblank_pipe_set(struct drm_device *dev, void *data,
 				struct drm_file *file_priv);
 extern int i915_vblank_pipe_get(struct drm_device *dev, void *data,
 				struct drm_file *file_priv);
-extern int i915_enable_vblank(struct drm_device *dev, int crtc);
-extern void i915_disable_vblank(struct drm_device *dev, int crtc);
-extern int ironlake_enable_vblank(struct drm_device *dev, int crtc);
-extern void ironlake_disable_vblank(struct drm_device *dev, int crtc);
-extern int ivybridge_enable_vblank(struct drm_device *dev, int crtc);
-extern void ivybridge_disable_vblank(struct drm_device *dev, int crtc);
-extern u32 i915_get_vblank_counter(struct drm_device *dev, int crtc);
-extern u32 gm45_get_vblank_counter(struct drm_device *dev, int crtc);
 extern int i915_vblank_swap(struct drm_device *dev, void *data,
 			    struct drm_file *file_priv);
 
@@ -1070,13 +1047,6 @@
 i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
 
 void intel_enable_asle (struct drm_device *dev);
-int i915_get_vblank_timestamp(struct drm_device *dev, int crtc,
-			      int *max_error,
-			      struct timeval *vblank_time,
-			      unsigned flags);
-
-int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe,
-			     int *vpos, int *hpos);
 
 #ifdef CONFIG_DEBUG_FS
 extern void i915_destroy_error_state(struct drm_device *dev);
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index ae2b499..3b03f85 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -152,7 +152,7 @@
 /* Called from drm generic code, passed a 'crtc', which
  * we use as a pipe index
  */
-u32 i915_get_vblank_counter(struct drm_device *dev, int pipe)
+static u32 i915_get_vblank_counter(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	unsigned long high_frame;
@@ -184,7 +184,7 @@
 	return (high1 << 8) | low;
 }
 
-u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe)
+static u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	int reg = PIPE_FRMCOUNT_GM45(pipe);
@@ -198,7 +198,7 @@
 	return I915_READ(reg);
 }
 
-int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe,
+static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe,
 			     int *vpos, int *hpos)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
@@ -264,7 +264,7 @@
 	return ret;
 }
 
-int i915_get_vblank_timestamp(struct drm_device *dev, int pipe,
+static int i915_get_vblank_timestamp(struct drm_device *dev, int pipe,
 			      int *max_error,
 			      struct timeval *vblank_time,
 			      unsigned flags)
@@ -462,7 +462,7 @@
 		DRM_DEBUG_DRIVER("PCH transcoder A underrun interrupt\n");
 }
 
-irqreturn_t ivybridge_irq_handler(DRM_IRQ_ARGS)
+static irqreturn_t ivybridge_irq_handler(DRM_IRQ_ARGS)
 {
 	struct drm_device *dev = (struct drm_device *) arg;
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
@@ -550,7 +550,7 @@
 	return ret;
 }
 
-irqreturn_t ironlake_irq_handler(DRM_IRQ_ARGS)
+static irqreturn_t ironlake_irq_handler(DRM_IRQ_ARGS)
 {
 	struct drm_device *dev = (struct drm_device *) arg;
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
@@ -1209,7 +1209,7 @@
 	}
 }
 
-irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
+static irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
 {
 	struct drm_device *dev = (struct drm_device *) arg;
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
@@ -1454,7 +1454,7 @@
 /* Called from drm generic code, passed 'crtc' which
  * we use as a pipe index
  */
-int i915_enable_vblank(struct drm_device *dev, int pipe)
+static int i915_enable_vblank(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	unsigned long irqflags;
@@ -1478,7 +1478,7 @@
 	return 0;
 }
 
-int ironlake_enable_vblank(struct drm_device *dev, int pipe)
+static int ironlake_enable_vblank(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	unsigned long irqflags;
@@ -1494,7 +1494,7 @@
 	return 0;
 }
 
-int ivybridge_enable_vblank(struct drm_device *dev, int pipe)
+static int ivybridge_enable_vblank(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	unsigned long irqflags;
@@ -1513,7 +1513,7 @@
 /* Called from drm generic code, passed 'crtc' which
  * we use as a pipe index
  */
-void i915_disable_vblank(struct drm_device *dev, int pipe)
+static void i915_disable_vblank(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	unsigned long irqflags;
@@ -1529,7 +1529,7 @@
 	spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
 }
 
-void ironlake_disable_vblank(struct drm_device *dev, int pipe)
+static void ironlake_disable_vblank(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	unsigned long irqflags;
@@ -1540,7 +1540,7 @@
 	spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
 }
 
-void ivybridge_disable_vblank(struct drm_device *dev, int pipe)
+static void ivybridge_disable_vblank(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	unsigned long irqflags;
@@ -1728,7 +1728,7 @@
 
 /* drm_dma.h hooks
 */
-void ironlake_irq_preinstall(struct drm_device *dev)
+static void ironlake_irq_preinstall(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 
@@ -1740,7 +1740,7 @@
 		INIT_WORK(&dev_priv->rps_work, gen6_pm_rps_work);
 
 	I915_WRITE(HWSTAM, 0xeffe);
-	if (IS_GEN6(dev)) {
+	if (IS_GEN6(dev) || IS_GEN7(dev)) {
 		/* Workaround stalls observed on Sandy Bridge GPUs by
 		 * making the blitter command streamer generate a
 		 * write to the Hardware Status Page for
@@ -1769,7 +1769,7 @@
 	POSTING_READ(SDEIER);
 }
 
-int ironlake_irq_postinstall(struct drm_device *dev)
+static int ironlake_irq_postinstall(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	/* enable kind of interrupts always enabled */
@@ -1841,7 +1841,7 @@
 	return 0;
 }
 
-int ivybridge_irq_postinstall(struct drm_device *dev)
+static int ivybridge_irq_postinstall(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	/* enable kind of interrupts always enabled */
@@ -1891,7 +1891,7 @@
 	return 0;
 }
 
-void i915_driver_irq_preinstall(struct drm_device * dev)
+static void i915_driver_irq_preinstall(struct drm_device * dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	int pipe;
@@ -1918,7 +1918,7 @@
  * Must be called after intel_modeset_init or hotplug interrupts won't be
  * enabled correctly.
  */
-int i915_driver_irq_postinstall(struct drm_device *dev)
+static int i915_driver_irq_postinstall(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	u32 enable_mask = I915_INTERRUPT_ENABLE_FIX | I915_INTERRUPT_ENABLE_VAR;
@@ -1994,7 +1994,7 @@
 	return 0;
 }
 
-void ironlake_irq_uninstall(struct drm_device *dev)
+static void ironlake_irq_uninstall(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 
@@ -2014,7 +2014,7 @@
 	I915_WRITE(GTIIR, I915_READ(GTIIR));
 }
 
-void i915_driver_irq_uninstall(struct drm_device * dev)
+static void i915_driver_irq_uninstall(struct drm_device * dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	int pipe;
@@ -2040,3 +2040,41 @@
 			   I915_READ(PIPESTAT(pipe)) & 0x8000ffff);
 	I915_WRITE(IIR, I915_READ(IIR));
 }
+
+void intel_irq_init(struct drm_device *dev)
+{
+	dev->driver->get_vblank_counter = i915_get_vblank_counter;
+	dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
+	if (IS_G4X(dev) || IS_GEN5(dev) || IS_GEN6(dev) || IS_IVYBRIDGE(dev)) {
+		dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
+		dev->driver->get_vblank_counter = gm45_get_vblank_counter;
+	}
+
+
+	dev->driver->get_vblank_timestamp = i915_get_vblank_timestamp;
+	dev->driver->get_scanout_position = i915_get_crtc_scanoutpos;
+
+	if (IS_IVYBRIDGE(dev)) {
+		/* Share pre & uninstall handlers with ILK/SNB */
+		dev->driver->irq_handler = ivybridge_irq_handler;
+		dev->driver->irq_preinstall = ironlake_irq_preinstall;
+		dev->driver->irq_postinstall = ivybridge_irq_postinstall;
+		dev->driver->irq_uninstall = ironlake_irq_uninstall;
+		dev->driver->enable_vblank = ivybridge_enable_vblank;
+		dev->driver->disable_vblank = ivybridge_disable_vblank;
+	} else if (HAS_PCH_SPLIT(dev)) {
+		dev->driver->irq_handler = ironlake_irq_handler;
+		dev->driver->irq_preinstall = ironlake_irq_preinstall;
+		dev->driver->irq_postinstall = ironlake_irq_postinstall;
+		dev->driver->irq_uninstall = ironlake_irq_uninstall;
+		dev->driver->enable_vblank = ironlake_enable_vblank;
+		dev->driver->disable_vblank = ironlake_disable_vblank;
+	} else {
+		dev->driver->irq_preinstall = i915_driver_irq_preinstall;
+		dev->driver->irq_postinstall = i915_driver_irq_postinstall;
+		dev->driver->irq_uninstall = i915_driver_irq_uninstall;
+		dev->driver->irq_handler = i915_driver_irq_handler;
+		dev->driver->enable_vblank = i915_enable_vblank;
+		dev->driver->disable_vblank = i915_disable_vblank;
+	}
+}
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index e8152d2..5257cfc 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -597,7 +597,7 @@
 	return;
 }
 
-void i915_save_display(struct drm_device *dev)
+static void i915_save_display(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
@@ -678,7 +678,6 @@
 	}
 
 	/* VGA state */
-	mutex_lock(&dev->struct_mutex);
 	dev_priv->saveVGA0 = I915_READ(VGA0);
 	dev_priv->saveVGA1 = I915_READ(VGA1);
 	dev_priv->saveVGA_PD = I915_READ(VGA_PD);
@@ -688,10 +687,9 @@
 		dev_priv->saveVGACNTRL = I915_READ(VGACNTRL);
 
 	i915_save_vga(dev);
-	mutex_unlock(&dev->struct_mutex);
 }
 
-void i915_restore_display(struct drm_device *dev)
+static void i915_restore_display(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
@@ -783,7 +781,6 @@
 	else
 		I915_WRITE(VGACNTRL, dev_priv->saveVGACNTRL);
 
-	mutex_lock(&dev->struct_mutex);
 	I915_WRITE(VGA0, dev_priv->saveVGA0);
 	I915_WRITE(VGA1, dev_priv->saveVGA1);
 	I915_WRITE(VGA_PD, dev_priv->saveVGA_PD);
@@ -791,7 +788,6 @@
 	udelay(150);
 
 	i915_restore_vga(dev);
-	mutex_unlock(&dev->struct_mutex);
 }
 
 int i915_save_state(struct drm_device *dev)
@@ -801,6 +797,8 @@
 
 	pci_read_config_byte(dev->pdev, LBB, &dev_priv->saveLBB);
 
+	mutex_lock(&dev->struct_mutex);
+
 	/* Hardware status page */
 	dev_priv->saveHWS = I915_READ(HWS_PGA);
 
@@ -840,6 +838,8 @@
 	for (i = 0; i < 3; i++)
 		dev_priv->saveSWF2[i] = I915_READ(SWF30 + (i << 2));
 
+	mutex_unlock(&dev->struct_mutex);
+
 	return 0;
 }
 
@@ -850,6 +850,8 @@
 
 	pci_write_config_byte(dev->pdev, LBB, dev_priv->saveLBB);
 
+	mutex_lock(&dev->struct_mutex);
+
 	/* Hardware status page */
 	I915_WRITE(HWS_PGA, dev_priv->saveHWS);
 
@@ -867,6 +869,7 @@
 		I915_WRITE(IER, dev_priv->saveIER);
 		I915_WRITE(IMR, dev_priv->saveIMR);
 	}
+	mutex_unlock(&dev->struct_mutex);
 
 	intel_init_clock_gating(dev);
 
@@ -878,6 +881,8 @@
 	if (IS_GEN6(dev))
 		gen6_enable_rps(dev_priv);
 
+	mutex_lock(&dev->struct_mutex);
+
 	/* Cache mode state */
 	I915_WRITE (CACHE_MODE_0, dev_priv->saveCACHE_MODE_0 | 0xffff0000);
 
@@ -891,6 +896,8 @@
 	for (i = 0; i < 3; i++)
 		I915_WRITE(SWF30 + (i << 2), dev_priv->saveSWF2[i]);
 
+	mutex_unlock(&dev->struct_mutex);
+
 	intel_i2c_reset(dev);
 
 	return 0;
diff --git a/drivers/gpu/drm/i915/intel_overlay.c b/drivers/gpu/drm/i915/intel_overlay.c
index 56a8e2a..9e2959b 100644
--- a/drivers/gpu/drm/i915/intel_overlay.c
+++ b/drivers/gpu/drm/i915/intel_overlay.c
@@ -1409,6 +1409,11 @@
 	overlay = kzalloc(sizeof(struct intel_overlay), GFP_KERNEL);
 	if (!overlay)
 		return;
+
+	mutex_lock(&dev->struct_mutex);
+	if (WARN_ON(dev_priv->overlay))
+		goto out_free;
+
 	overlay->dev = dev;
 
 	reg_bo = i915_gem_alloc_object(dev, PAGE_SIZE);
@@ -1416,8 +1421,6 @@
 		goto out_free;
 	overlay->reg_bo = reg_bo;
 
-	mutex_lock(&dev->struct_mutex);
-
 	if (OVERLAY_NEEDS_PHYSICAL(dev)) {
 		ret = i915_gem_attach_phys_object(dev, reg_bo,
 						  I915_GEM_PHYS_OVERLAY_REGS,
@@ -1442,8 +1445,6 @@
                 }
 	}
 
-	mutex_unlock(&dev->struct_mutex);
-
 	/* init all values */
 	overlay->color_key = 0x0101fe;
 	overlay->brightness = -19;
@@ -1452,7 +1453,7 @@
 
 	regs = intel_overlay_map_regs(overlay);
 	if (!regs)
-		goto out_free_bo;
+		goto out_unpin_bo;
 
 	memset(regs, 0, sizeof(struct overlay_registers));
 	update_polyphase_filter(regs);
@@ -1461,15 +1462,17 @@
 	intel_overlay_unmap_regs(overlay, regs);
 
 	dev_priv->overlay = overlay;
+	mutex_unlock(&dev->struct_mutex);
 	DRM_INFO("initialized overlay support\n");
 	return;
 
 out_unpin_bo:
-	i915_gem_object_unpin(reg_bo);
+	if (!OVERLAY_NEEDS_PHYSICAL(dev))
+		i915_gem_object_unpin(reg_bo);
 out_free_bo:
 	drm_gem_object_unreference(&reg_bo->base);
-	mutex_unlock(&dev->struct_mutex);
 out_free:
+	mutex_unlock(&dev->struct_mutex);
 	kfree(overlay);
 	return;
 }
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index 144f79a..731acea 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -371,7 +371,6 @@
 		engine->vram.flags_valid	= nv50_vram_flags_valid;
 		break;
 	case 0xC0:
-	case 0xD0:
 		engine->instmem.init		= nvc0_instmem_init;
 		engine->instmem.takedown	= nvc0_instmem_takedown;
 		engine->instmem.suspend		= nvc0_instmem_suspend;
@@ -923,7 +922,6 @@
 		dev_priv->card_type = NV_50;
 		break;
 	case 0xc0:
-	case 0xd0:
 		dev_priv->card_type = NV_C0;
 		break;
 	default:
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 12d2fdc..e8a5ffb 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -2248,7 +2248,10 @@
 
 	/* Get VRAM informations */
 	rdev->mc.vram_is_ddr = true;
-	tmp = RREG32(MC_ARB_RAMCFG);
+	if (rdev->flags & RADEON_IS_IGP)
+		tmp = RREG32(FUS_MC_ARB_RAMCFG);
+	else
+		tmp = RREG32(MC_ARB_RAMCFG);
 	if (tmp & CHANSIZE_OVERRIDE) {
 		chansize = 16;
 	} else if (tmp & CHANSIZE_MASK) {
diff --git a/drivers/gpu/drm/radeon/nid.h b/drivers/gpu/drm/radeon/nid.h
index 9736746..4672869 100644
--- a/drivers/gpu/drm/radeon/nid.h
+++ b/drivers/gpu/drm/radeon/nid.h
@@ -320,7 +320,7 @@
 #define	CGTS_USER_TCC_DISABLE				0x914C
 #define		TCC_DISABLE_MASK				0xFFFF0000
 #define		TCC_DISABLE_SHIFT				16
-#define	CGTS_SM_CTRL_REG				0x915C
+#define	CGTS_SM_CTRL_REG				0x9150
 #define		OVERRIDE				(1 << 21)
 
 #define	TA_CNTL_AUX					0x9508
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 16db83c..5f888f7 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -333,7 +333,7 @@
 	    F71858FG
 	    F71862FG
 	    F71863FG
-	    F71869F/E
+	    F71869F/E/A
 	    F71882FG
 	    F71883FG
 	    F71889FG/ED/A
diff --git a/drivers/hwmon/adm1275.c b/drivers/hwmon/adm1275.c
index c2ee204..b9b7caf 100644
--- a/drivers/hwmon/adm1275.c
+++ b/drivers/hwmon/adm1275.c
@@ -32,6 +32,7 @@
 			 const struct i2c_device_id *id)
 {
 	int config;
+	int ret;
 	struct pmbus_driver_info *info;
 
 	if (!i2c_check_functionality(client->adapter,
@@ -43,8 +44,10 @@
 		return -ENOMEM;
 
 	config = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG);
-	if (config < 0)
-		return config;
+	if (config < 0) {
+		ret = config;
+		goto err_mem;
+	}
 
 	info->pages = 1;
 	info->direct[PSC_VOLTAGE_IN] = true;
@@ -76,7 +79,14 @@
 	else
 		info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT;
 
-	return pmbus_do_probe(client, id, info);
+	ret = pmbus_do_probe(client, id, info);
+	if (ret)
+		goto err_mem;
+	return 0;
+
+err_mem:
+	kfree(info);
+	return ret;
 }
 
 static int adm1275_remove(struct i2c_client *client)
diff --git a/drivers/hwmon/emc6w201.c b/drivers/hwmon/emc6w201.c
index e0ef323..0064432 100644
--- a/drivers/hwmon/emc6w201.c
+++ b/drivers/hwmon/emc6w201.c
@@ -78,8 +78,9 @@
 
 	lsb = i2c_smbus_read_byte_data(client, reg);
 	msb = i2c_smbus_read_byte_data(client, reg + 1);
-	if (lsb < 0 || msb < 0) {
-		dev_err(&client->dev, "16-bit read failed at 0x%02x\n", reg);
+	if (unlikely(lsb < 0 || msb < 0)) {
+		dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
+			16, "read", reg);
 		return 0xFFFF;	/* Arbitrary value */
 	}
 
@@ -95,10 +96,39 @@
 	int err;
 
 	err = i2c_smbus_write_byte_data(client, reg, val & 0xff);
-	if (!err)
+	if (likely(!err))
 		err = i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
-	if (err < 0)
-		dev_err(&client->dev, "16-bit write failed at 0x%02x\n", reg);
+	if (unlikely(err < 0))
+		dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
+			16, "write", reg);
+
+	return err;
+}
+
+/* Read 8-bit value from register */
+static u8 emc6w201_read8(struct i2c_client *client, u8 reg)
+{
+	int val;
+
+	val = i2c_smbus_read_byte_data(client, reg);
+	if (unlikely(val < 0)) {
+		dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
+			8, "read", reg);
+		return 0x00;	/* Arbitrary value */
+	}
+
+	return val;
+}
+
+/* Write 8-bit value to register */
+static int emc6w201_write8(struct i2c_client *client, u8 reg, u8 val)
+{
+	int err;
+
+	err = i2c_smbus_write_byte_data(client, reg, val);
+	if (unlikely(err < 0))
+		dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
+			8, "write", reg);
 
 	return err;
 }
@@ -114,25 +144,25 @@
 	if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
 		for (nr = 0; nr < 6; nr++) {
 			data->in[input][nr] =
-				i2c_smbus_read_byte_data(client,
+				emc6w201_read8(client,
 						EMC6W201_REG_IN(nr));
 			data->in[min][nr] =
-				i2c_smbus_read_byte_data(client,
+				emc6w201_read8(client,
 						EMC6W201_REG_IN_LOW(nr));
 			data->in[max][nr] =
-				i2c_smbus_read_byte_data(client,
+				emc6w201_read8(client,
 						EMC6W201_REG_IN_HIGH(nr));
 		}
 
 		for (nr = 0; nr < 6; nr++) {
 			data->temp[input][nr] =
-				i2c_smbus_read_byte_data(client,
+				emc6w201_read8(client,
 						EMC6W201_REG_TEMP(nr));
 			data->temp[min][nr] =
-				i2c_smbus_read_byte_data(client,
+				emc6w201_read8(client,
 						EMC6W201_REG_TEMP_LOW(nr));
 			data->temp[max][nr] =
-				i2c_smbus_read_byte_data(client,
+				emc6w201_read8(client,
 						EMC6W201_REG_TEMP_HIGH(nr));
 		}
 
@@ -192,7 +222,7 @@
 
 	mutex_lock(&data->update_lock);
 	data->in[sf][nr] = SENSORS_LIMIT(val, 0, 255);
-	err = i2c_smbus_write_byte_data(client, reg, data->in[sf][nr]);
+	err = emc6w201_write8(client, reg, data->in[sf][nr]);
 	mutex_unlock(&data->update_lock);
 
 	return err < 0 ? err : count;
@@ -229,7 +259,7 @@
 
 	mutex_lock(&data->update_lock);
 	data->temp[sf][nr] = SENSORS_LIMIT(val, -127, 128);
-	err = i2c_smbus_write_byte_data(client, reg, data->temp[sf][nr]);
+	err = emc6w201_write8(client, reg, data->temp[sf][nr]);
 	mutex_unlock(&data->update_lock);
 
 	return err < 0 ? err : count;
@@ -444,7 +474,7 @@
 
 	/* Check configuration */
 	config = i2c_smbus_read_byte_data(client, EMC6W201_REG_CONFIG);
-	if ((config & 0xF4) != 0x04)
+	if (config < 0 || (config & 0xF4) != 0x04)
 		return -ENODEV;
 	if (!(config & 0x01)) {
 		dev_err(&client->dev, "Monitoring not enabled\n");
diff --git a/drivers/hwmon/f71882fg.c b/drivers/hwmon/f71882fg.c
index a4a94a0..2d96ed2 100644
--- a/drivers/hwmon/f71882fg.c
+++ b/drivers/hwmon/f71882fg.c
@@ -52,6 +52,7 @@
 #define SIO_F71858_ID		0x0507  /* Chipset ID */
 #define SIO_F71862_ID		0x0601	/* Chipset ID */
 #define SIO_F71869_ID		0x0814	/* Chipset ID */
+#define SIO_F71869A_ID		0x1007	/* Chipset ID */
 #define SIO_F71882_ID		0x0541	/* Chipset ID */
 #define SIO_F71889_ID		0x0723	/* Chipset ID */
 #define SIO_F71889E_ID		0x0909	/* Chipset ID */
@@ -108,8 +109,8 @@
 module_param(force_id, ushort, 0);
 MODULE_PARM_DESC(force_id, "Override the detected device ID");
 
-enum chips { f71808e, f71808a, f71858fg, f71862fg, f71869, f71882fg, f71889fg,
-	     f71889ed, f71889a, f8000, f81865f };
+enum chips { f71808e, f71808a, f71858fg, f71862fg, f71869, f71869a, f71882fg,
+	     f71889fg, f71889ed, f71889a, f8000, f81865f };
 
 static const char *f71882fg_names[] = {
 	"f71808e",
@@ -117,6 +118,7 @@
 	"f71858fg",
 	"f71862fg",
 	"f71869", /* Both f71869f and f71869e, reg. compatible and same id */
+	"f71869a",
 	"f71882fg",
 	"f71889fg", /* f81801u too, same id */
 	"f71889ed",
@@ -131,6 +133,7 @@
 	[f71858fg]	= { 1, 1, 1, 0, 0, 0, 0, 0, 0 },
 	[f71862fg]	= { 1, 1, 1, 1, 1, 1, 1, 1, 1 },
 	[f71869]	= { 1, 1, 1, 1, 1, 1, 1, 1, 1 },
+	[f71869a]	= { 1, 1, 1, 1, 1, 1, 1, 1, 1 },
 	[f71882fg]	= { 1, 1, 1, 1, 1, 1, 1, 1, 1 },
 	[f71889fg]	= { 1, 1, 1, 1, 1, 1, 1, 1, 1 },
 	[f71889ed]	= { 1, 1, 1, 1, 1, 1, 1, 1, 1 },
@@ -145,6 +148,7 @@
 	[f71858fg]	= 0,
 	[f71862fg]	= 0,
 	[f71869]	= 0,
+	[f71869a]	= 0,
 	[f71882fg]	= 1,
 	[f71889fg]	= 1,
 	[f71889ed]	= 1,
@@ -159,6 +163,7 @@
 	[f71858fg]	= 0,
 	[f71862fg]	= 1,
 	[f71869]	= 1,
+	[f71869a]	= 1,
 	[f71882fg]	= 1,
 	[f71889fg]	= 1,
 	[f71889ed]	= 1,
@@ -173,6 +178,7 @@
 	[f71858fg]	= 3,
 	[f71862fg]	= 3,
 	[f71869]	= 3,
+	[f71869a]	= 3,
 	[f71882fg]	= 4,
 	[f71889fg]	= 3,
 	[f71889ed]	= 3,
@@ -187,6 +193,7 @@
 	[f71858fg]	= 0,
 	[f71862fg]	= 1,
 	[f71869]	= 1,
+	[f71869a]	= 1,
 	[f71882fg]	= 1,
 	[f71889fg]	= 1,
 	[f71889ed]	= 1,
@@ -201,6 +208,7 @@
 	[f71858fg]	= 3,
 	[f71862fg]	= 3,
 	[f71869]	= 3,
+	[f71869a]	= 3,
 	[f71882fg]	= 3,
 	[f71889fg]	= 3,
 	[f71889ed]	= 3,
@@ -2243,6 +2251,7 @@
 		case f71808e:
 		case f71808a:
 		case f71869:
+		case f71869a:
 			/* These always have signed auto point temps */
 			data->auto_point_temp_signed = 1;
 			/* Fall through to select correct fan/pwm reg bank! */
@@ -2305,6 +2314,7 @@
 		case f71808e:
 		case f71808a:
 		case f71869:
+		case f71869a:
 		case f71889fg:
 		case f71889ed:
 		case f71889a:
@@ -2528,6 +2538,9 @@
 	case SIO_F71869_ID:
 		sio_data->type = f71869;
 		break;
+	case SIO_F71869A_ID:
+		sio_data->type = f71869a;
+		break;
 	case SIO_F71882_ID:
 		sio_data->type = f71882fg;
 		break;
@@ -2662,7 +2675,7 @@
 }
 
 MODULE_DESCRIPTION("F71882FG Hardware Monitoring Driver");
-MODULE_AUTHOR("Hans Edgington, Hans de Goede (hdegoede@redhat.com)");
+MODULE_AUTHOR("Hans Edgington, Hans de Goede <hdegoede@redhat.com>");
 MODULE_LICENSE("GPL");
 
 module_init(f71882fg_init);
diff --git a/drivers/hwmon/hwmon-vid.c b/drivers/hwmon/hwmon-vid.c
index 2582bfe..c8195a0 100644
--- a/drivers/hwmon/hwmon-vid.c
+++ b/drivers/hwmon/hwmon-vid.c
@@ -202,7 +202,7 @@
 
 	{X86_VENDOR_CENTAUR, 0x6, 0x7, ANY, 85},	/* Eden ESP/Ezra */
 	{X86_VENDOR_CENTAUR, 0x6, 0x8, 0x7, 85},	/* Ezra T */
-	{X86_VENDOR_CENTAUR, 0x6, 0x9, 0x7, 85},	/* Nemiah */
+	{X86_VENDOR_CENTAUR, 0x6, 0x9, 0x7, 85},	/* Nehemiah */
 	{X86_VENDOR_CENTAUR, 0x6, 0x9, ANY, 17},	/* C3-M, Eden-N */
 	{X86_VENDOR_CENTAUR, 0x6, 0xA, 0x7, 0},		/* No information */
 	{X86_VENDOR_CENTAUR, 0x6, 0xA, ANY, 13},	/* C7, Esther */
diff --git a/drivers/hwmon/pmbus.c b/drivers/hwmon/pmbus.c
index 98e2e28..931d940 100644
--- a/drivers/hwmon/pmbus.c
+++ b/drivers/hwmon/pmbus.c
@@ -47,12 +47,14 @@
 	if (info->func[0]
 	    && pmbus_check_byte_register(client, 0, PMBUS_STATUS_INPUT))
 		info->func[0] |= PMBUS_HAVE_STATUS_INPUT;
-	if (pmbus_check_word_register(client, 0, PMBUS_READ_FAN_SPEED_1)) {
+	if (pmbus_check_byte_register(client, 0, PMBUS_FAN_CONFIG_12) &&
+	    pmbus_check_word_register(client, 0, PMBUS_READ_FAN_SPEED_1)) {
 		info->func[0] |= PMBUS_HAVE_FAN12;
 		if (pmbus_check_byte_register(client, 0, PMBUS_STATUS_FAN_12))
 			info->func[0] |= PMBUS_HAVE_STATUS_FAN12;
 	}
-	if (pmbus_check_word_register(client, 0, PMBUS_READ_FAN_SPEED_3)) {
+	if (pmbus_check_byte_register(client, 0, PMBUS_FAN_CONFIG_34) &&
+	    pmbus_check_word_register(client, 0, PMBUS_READ_FAN_SPEED_3)) {
 		info->func[0] |= PMBUS_HAVE_FAN34;
 		if (pmbus_check_byte_register(client, 0, PMBUS_STATUS_FAN_34))
 			info->func[0] |= PMBUS_HAVE_STATUS_FAN34;
@@ -63,6 +65,10 @@
 					      PMBUS_STATUS_TEMPERATURE))
 			info->func[0] |= PMBUS_HAVE_STATUS_TEMP;
 	}
+	if (pmbus_check_word_register(client, 0, PMBUS_READ_TEMPERATURE_2))
+		info->func[0] |= PMBUS_HAVE_TEMP2;
+	if (pmbus_check_word_register(client, 0, PMBUS_READ_TEMPERATURE_3))
+		info->func[0] |= PMBUS_HAVE_TEMP3;
 
 	/* Sensors detected on all pages */
 	for (page = 0; page < info->pages; page++) {
diff --git a/drivers/hwmon/pmbus_core.c b/drivers/hwmon/pmbus_core.c
index 354770e..744672c 100644
--- a/drivers/hwmon/pmbus_core.c
+++ b/drivers/hwmon/pmbus_core.c
@@ -1430,14 +1430,9 @@
 	i2c_set_clientdata(client, data);
 	mutex_init(&data->update_lock);
 
-	/*
-	 * Bail out if status register or PMBus revision register
-	 * does not exist.
-	 */
-	if (i2c_smbus_read_byte_data(client, PMBUS_STATUS_BYTE) < 0
-	    || i2c_smbus_read_byte_data(client, PMBUS_REVISION) < 0) {
-		dev_err(&client->dev,
-			"Status or revision register not found\n");
+	/* Bail out if PMBus status register does not exist. */
+	if (i2c_smbus_read_byte_data(client, PMBUS_STATUS_BYTE) < 0) {
+		dev_err(&client->dev, "PMBus status register not found\n");
 		ret = -ENODEV;
 		goto out_data;
 	}
diff --git a/drivers/hwmon/sch5627.c b/drivers/hwmon/sch5627.c
index 020c872..3494a4c 100644
--- a/drivers/hwmon/sch5627.c
+++ b/drivers/hwmon/sch5627.c
@@ -887,7 +887,7 @@
 }
 
 MODULE_DESCRIPTION("SMSC SCH5627 Hardware Monitoring Driver");
-MODULE_AUTHOR("Hans de Goede (hdegoede@redhat.com)");
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
 MODULE_LICENSE("GPL");
 
 module_init(sch5627_init);
diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index f62f52f..fc0f2bd 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -3641,7 +3641,8 @@
 
 static char *cm_devnode(struct device *dev, mode_t *mode)
 {
-	*mode = 0666;
+	if (mode)
+		*mode = 0666;
 	return kasprintf(GFP_KERNEL, "infiniband/%s", dev_name(dev));
 }
 
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index e49a85f..56898b6 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -826,7 +826,8 @@
 
 static char *uverbs_devnode(struct device *dev, mode_t *mode)
 {
-	*mode = 0666;
+	if (mode)
+		*mode = 0666;
 	return kasprintf(GFP_KERNEL, "infiniband/%s", dev_name(dev));
 }
 
diff --git a/drivers/input/keyboard/pmic8xxx-keypad.c b/drivers/input/keyboard/pmic8xxx-keypad.c
index 40b02ae..6229c3e 100644
--- a/drivers/input/keyboard/pmic8xxx-keypad.c
+++ b/drivers/input/keyboard/pmic8xxx-keypad.c
@@ -520,7 +520,8 @@
  */
 static int __devinit pmic8xxx_kp_probe(struct platform_device *pdev)
 {
-	const struct pm8xxx_keypad_platform_data *pdata = mfd_get_data(pdev);
+	const struct pm8xxx_keypad_platform_data *pdata =
+					dev_get_platdata(&pdev->dev);
 	const struct matrix_keymap_data *keymap_data;
 	struct pmic8xxx_kp *kp;
 	int rc;
diff --git a/drivers/input/misc/pmic8xxx-pwrkey.c b/drivers/input/misc/pmic8xxx-pwrkey.c
index 97e07e7..b3cfb9c 100644
--- a/drivers/input/misc/pmic8xxx-pwrkey.c
+++ b/drivers/input/misc/pmic8xxx-pwrkey.c
@@ -90,7 +90,8 @@
 	unsigned int delay;
 	u8 pon_cntl;
 	struct pmic8xxx_pwrkey *pwrkey;
-	const struct pm8xxx_pwrkey_platform_data *pdata = mfd_get_data(pdev);
+	const struct pm8xxx_pwrkey_platform_data *pdata =
+					dev_get_platdata(&pdev->dev);
 
 	if (!pdata) {
 		dev_err(&pdev->dev, "power key platform data not supplied\n");
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 0f09c05..6ca938a 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -728,6 +728,9 @@
 	  if you say yes here you get support for the TPS65910 series of
 	  Power Management chips.
 
+config TPS65911_COMPARATOR
+	tristate
+
 endif # MFD_SUPPORT
 
 menu "Multimedia Capabilities Port drivers"
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index efe3cc3..d7d47d2 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -94,3 +94,4 @@
 obj-$(CONFIG_MFD_PM8921_CORE) 	+= pm8921-core.o
 obj-$(CONFIG_MFD_PM8XXX_IRQ) 	+= pm8xxx-irq.o
 obj-$(CONFIG_MFD_TPS65910)	+= tps65910.o tps65910-irq.o
+obj-$(CONFIG_TPS65911_COMPARATOR)	+= tps65911-comparator.o
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 8552195..1717144 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -26,7 +26,6 @@
 #include <linux/spinlock.h>
 #include <linux/gpio.h>
 #include <plat/usb.h>
-#include <linux/pm_runtime.h>
 
 #define USBHS_DRIVER_NAME	"usbhs-omap"
 #define OMAP_EHCI_DEVICE	"ehci-omap"
@@ -147,6 +146,9 @@
 
 
 struct usbhs_hcd_omap {
+	struct clk			*usbhost_ick;
+	struct clk			*usbhost_hs_fck;
+	struct clk			*usbhost_fs_fck;
 	struct clk			*xclk60mhsp1_ck;
 	struct clk			*xclk60mhsp2_ck;
 	struct clk			*utmi_p1_fck;
@@ -156,6 +158,8 @@
 	struct clk			*usbhost_p2_fck;
 	struct clk			*usbtll_p2_fck;
 	struct clk			*init_60m_fclk;
+	struct clk			*usbtll_fck;
+	struct clk			*usbtll_ick;
 
 	void __iomem			*uhh_base;
 	void __iomem			*tll_base;
@@ -349,13 +353,46 @@
 	omap->platdata.ehci_data = pdata->ehci_data;
 	omap->platdata.ohci_data = pdata->ohci_data;
 
-	pm_runtime_enable(&pdev->dev);
+	omap->usbhost_ick = clk_get(dev, "usbhost_ick");
+	if (IS_ERR(omap->usbhost_ick)) {
+		ret =  PTR_ERR(omap->usbhost_ick);
+		dev_err(dev, "usbhost_ick failed error:%d\n", ret);
+		goto err_end;
+	}
+
+	omap->usbhost_hs_fck = clk_get(dev, "hs_fck");
+	if (IS_ERR(omap->usbhost_hs_fck)) {
+		ret = PTR_ERR(omap->usbhost_hs_fck);
+		dev_err(dev, "usbhost_hs_fck failed error:%d\n", ret);
+		goto err_usbhost_ick;
+	}
+
+	omap->usbhost_fs_fck = clk_get(dev, "fs_fck");
+	if (IS_ERR(omap->usbhost_fs_fck)) {
+		ret = PTR_ERR(omap->usbhost_fs_fck);
+		dev_err(dev, "usbhost_fs_fck failed error:%d\n", ret);
+		goto err_usbhost_hs_fck;
+	}
+
+	omap->usbtll_fck = clk_get(dev, "usbtll_fck");
+	if (IS_ERR(omap->usbtll_fck)) {
+		ret = PTR_ERR(omap->usbtll_fck);
+		dev_err(dev, "usbtll_fck failed error:%d\n", ret);
+		goto err_usbhost_fs_fck;
+	}
+
+	omap->usbtll_ick = clk_get(dev, "usbtll_ick");
+	if (IS_ERR(omap->usbtll_ick)) {
+		ret = PTR_ERR(omap->usbtll_ick);
+		dev_err(dev, "usbtll_ick failed error:%d\n", ret);
+		goto err_usbtll_fck;
+	}
 
 	omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
 	if (IS_ERR(omap->utmi_p1_fck)) {
 		ret = PTR_ERR(omap->utmi_p1_fck);
 		dev_err(dev, "utmi_p1_gfclk failed error:%d\n",	ret);
-		goto err_end;
+		goto err_usbtll_ick;
 	}
 
 	omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
@@ -485,8 +522,22 @@
 err_utmi_p1_fck:
 	clk_put(omap->utmi_p1_fck);
 
+err_usbtll_ick:
+	clk_put(omap->usbtll_ick);
+
+err_usbtll_fck:
+	clk_put(omap->usbtll_fck);
+
+err_usbhost_fs_fck:
+	clk_put(omap->usbhost_fs_fck);
+
+err_usbhost_hs_fck:
+	clk_put(omap->usbhost_hs_fck);
+
+err_usbhost_ick:
+	clk_put(omap->usbhost_ick);
+
 err_end:
-	pm_runtime_disable(&pdev->dev);
 	kfree(omap);
 
 end_probe:
@@ -520,7 +571,11 @@
 	clk_put(omap->utmi_p2_fck);
 	clk_put(omap->xclk60mhsp1_ck);
 	clk_put(omap->utmi_p1_fck);
-	pm_runtime_disable(&pdev->dev);
+	clk_put(omap->usbtll_ick);
+	clk_put(omap->usbtll_fck);
+	clk_put(omap->usbhost_fs_fck);
+	clk_put(omap->usbhost_hs_fck);
+	clk_put(omap->usbhost_ick);
 	kfree(omap);
 
 	return 0;
@@ -640,6 +695,7 @@
 	struct usbhs_omap_platform_data	*pdata = &omap->platdata;
 	unsigned long			flags = 0;
 	int				ret = 0;
+	unsigned long			timeout;
 	unsigned			reg;
 
 	dev_dbg(dev, "starting TI HSUSB Controller\n");
@@ -652,7 +708,11 @@
 	if (omap->count > 0)
 		goto end_count;
 
-	pm_runtime_get_sync(dev);
+	clk_enable(omap->usbhost_ick);
+	clk_enable(omap->usbhost_hs_fck);
+	clk_enable(omap->usbhost_fs_fck);
+	clk_enable(omap->usbtll_fck);
+	clk_enable(omap->usbtll_ick);
 
 	if (pdata->ehci_data->phy_reset) {
 		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) {
@@ -676,6 +736,50 @@
 	omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);
 	dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);
 
+	/* perform TLL soft reset, and wait until reset is complete */
+	usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
+			OMAP_USBTLL_SYSCONFIG_SOFTRESET);
+
+	/* Wait for TLL reset to complete */
+	timeout = jiffies + msecs_to_jiffies(1000);
+	while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
+			& OMAP_USBTLL_SYSSTATUS_RESETDONE)) {
+		cpu_relax();
+
+		if (time_after(jiffies, timeout)) {
+			dev_dbg(dev, "operation timed out\n");
+			ret = -EINVAL;
+			goto err_tll;
+		}
+	}
+
+	dev_dbg(dev, "TLL RESET DONE\n");
+
+	/* (1<<3) = no idle mode only for initial debugging */
+	usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
+			OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
+			OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
+			OMAP_USBTLL_SYSCONFIG_AUTOIDLE);
+
+	/* Put UHH in NoIdle/NoStandby mode */
+	reg = usbhs_read(omap->uhh_base, OMAP_UHH_SYSCONFIG);
+	if (is_omap_usbhs_rev1(omap)) {
+		reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP
+				| OMAP_UHH_SYSCONFIG_SIDLEMODE
+				| OMAP_UHH_SYSCONFIG_CACTIVITY
+				| OMAP_UHH_SYSCONFIG_MIDLEMODE);
+		reg &= ~OMAP_UHH_SYSCONFIG_AUTOIDLE;
+
+
+	} else if (is_omap_usbhs_rev2(omap)) {
+		reg &= ~OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR;
+		reg |= OMAP4_UHH_SYSCONFIG_NOIDLE;
+		reg &= ~OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR;
+		reg |= OMAP4_UHH_SYSCONFIG_NOSTDBY;
+	}
+
+	usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);
+
 	reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG);
 	/* setup ULPI bypass and burst configurations */
 	reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
@@ -815,8 +919,6 @@
 	return 0;
 
 err_tll:
-	pm_runtime_put_sync(dev);
-	spin_unlock_irqrestore(&omap->lock, flags);
 	if (pdata->ehci_data->phy_reset) {
 		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
 			gpio_free(pdata->ehci_data->reset_gpio_port[0]);
@@ -824,6 +926,13 @@
 		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
 			gpio_free(pdata->ehci_data->reset_gpio_port[1]);
 	}
+
+	clk_disable(omap->usbtll_ick);
+	clk_disable(omap->usbtll_fck);
+	clk_disable(omap->usbhost_fs_fck);
+	clk_disable(omap->usbhost_hs_fck);
+	clk_disable(omap->usbhost_ick);
+	spin_unlock_irqrestore(&omap->lock, flags);
 	return ret;
 }
 
@@ -896,7 +1005,11 @@
 		clk_disable(omap->utmi_p1_fck);
 	}
 
-	pm_runtime_put_sync(dev);
+	clk_disable(omap->usbtll_ick);
+	clk_disable(omap->usbtll_fck);
+	clk_disable(omap->usbhost_fs_fck);
+	clk_disable(omap->usbhost_hs_fck);
+	clk_disable(omap->usbhost_ick);
 
 	/* The gpio_free migh sleep; so unlock the spinlock */
 	spin_unlock_irqrestore(&omap->lock, flags);
diff --git a/drivers/mfd/tps65911-comparator.c b/drivers/mfd/tps65911-comparator.c
index 3d2dc56..283ac67 100644
--- a/drivers/mfd/tps65911-comparator.c
+++ b/drivers/mfd/tps65911-comparator.c
@@ -125,7 +125,7 @@
 static __devinit int tps65911_comparator_probe(struct platform_device *pdev)
 {
 	struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
-	struct tps65910_platform_data *pdata = dev_get_platdata(tps65910->dev);
+	struct tps65910_board *pdata = dev_get_platdata(tps65910->dev);
 	int ret;
 
 	ret = comp_threshold_set(tps65910, COMP1,  pdata->vmbch_threshold);
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 4a1f029..8d9dae8 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -830,6 +830,19 @@
 	  To compile this driver as a module, choose M here: the
 	  module will be called gdth.
 
+config SCSI_ISCI
+	tristate "Intel(R) C600 Series Chipset SAS Controller"
+	depends on PCI && SCSI
+	depends on X86
+	# (temporary): known alpha quality driver
+	depends on EXPERIMENTAL
+	select SCSI_SAS_LIBSAS
+	---help---
+	  This driver supports the 6Gb/s SAS capabilities of the storage
+	  control unit found in the Intel(R) C600 series chipset.
+
+	  The experimental tag will be removed after the driver exits alpha
+
 config SCSI_GENERIC_NCR5380
 	tristate "Generic NCR5380/53c400 SCSI PIO support"
 	depends on ISA && SCSI
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 7ad0b8a..3c08f53 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -73,6 +73,7 @@
 obj-$(CONFIG_SCSI_AIC7XXX_OLD)	+= aic7xxx_old.o
 obj-$(CONFIG_SCSI_AIC94XX)	+= aic94xx/
 obj-$(CONFIG_SCSI_PM8001)	+= pm8001/
+obj-$(CONFIG_SCSI_ISCI)		+= isci/
 obj-$(CONFIG_SCSI_IPS)		+= ips.o
 obj-$(CONFIG_SCSI_FD_MCS)	+= fd_mcs.o
 obj-$(CONFIG_SCSI_FUTURE_DOMAIN)+= fdomain.o
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index c6c0434..6bba23a 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -1037,6 +1037,7 @@
 	unsigned char sense_key;
 	unsigned char asc;      /* additional sense code */
 	unsigned char ascq;     /* additional sense code qualifier */
+	unsigned long sense_data_size;
 
 	ei = cp->err_info;
 	cmd = (struct scsi_cmnd *) cp->scsi_cmd;
@@ -1051,10 +1052,14 @@
 	cmd->result |= ei->ScsiStatus;
 
 	/* copy the sense data whether we need to or not. */
-	memcpy(cmd->sense_buffer, ei->SenseInfo,
-		ei->SenseLen > SCSI_SENSE_BUFFERSIZE ?
-			SCSI_SENSE_BUFFERSIZE :
-			ei->SenseLen);
+	if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo))
+		sense_data_size = SCSI_SENSE_BUFFERSIZE;
+	else
+		sense_data_size = sizeof(ei->SenseInfo);
+	if (ei->SenseLen < sense_data_size)
+		sense_data_size = ei->SenseLen;
+
+	memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size);
 	scsi_set_resid(cmd, ei->ResidualCnt);
 
 	if (ei->CommandStatus == 0) {
@@ -2580,7 +2585,8 @@
 		c->SG[0].Ext = 0; /* we are not chaining*/
 	}
 	hpsa_scsi_do_simple_cmd_core(h, c);
-	hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
+	if (iocommand.buf_size > 0)
+		hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
 	check_ioctl_unit_attention(h, c);
 
 	/* Copy the error information out */
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index b765061..bdfa223 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -4306,8 +4306,8 @@
 		spin_lock_irqsave(vhost->host->host_lock, flags);
 		if (rc == H_CLOSED)
 			vio_enable_interrupts(to_vio_dev(vhost->dev));
-		else if (rc || (rc = ibmvfc_send_crq_init(vhost)) ||
-			 (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) {
+		if (rc || (rc = ibmvfc_send_crq_init(vhost)) ||
+		    (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) {
 			ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD);
 			dev_err(vhost->dev, "Error after reset (rc=%d)\n", rc);
 		}
diff --git a/drivers/scsi/isci/Makefile b/drivers/scsi/isci/Makefile
new file mode 100644
index 0000000..3359e10
--- /dev/null
+++ b/drivers/scsi/isci/Makefile
@@ -0,0 +1,8 @@
+obj-$(CONFIG_SCSI_ISCI) += isci.o
+isci-objs := init.o phy.o request.o \
+	     remote_device.o port.o \
+	     host.o task.o probe_roms.o \
+	     remote_node_context.o \
+	     remote_node_table.o \
+	     unsolicited_frame_control.o \
+	     port_config.o \
diff --git a/drivers/scsi/isci/firmware/Makefile b/drivers/scsi/isci/firmware/Makefile
new file mode 100644
index 0000000..5f54461
--- /dev/null
+++ b/drivers/scsi/isci/firmware/Makefile
@@ -0,0 +1,19 @@
+# Makefile for create_fw
+#
+CC=gcc
+CFLAGS=-c -Wall -O2 -g
+LDFLAGS=
+SOURCES=create_fw.c
+OBJECTS=$(SOURCES:.cpp=.o)
+EXECUTABLE=create_fw
+
+all: $(SOURCES) $(EXECUTABLE)
+
+$(EXECUTABLE): $(OBJECTS)
+	$(CC) $(LDFLAGS) $(OBJECTS) -o $@
+
+.c.o:
+	$(CC) $(CFLAGS) $< -O $@
+
+clean:
+	rm -f *.o $(EXECUTABLE)
diff --git a/drivers/scsi/isci/firmware/README b/drivers/scsi/isci/firmware/README
new file mode 100644
index 0000000..8056d2b
--- /dev/null
+++ b/drivers/scsi/isci/firmware/README
@@ -0,0 +1,36 @@
+This defines the temporary binary blow we are to pass to the SCU
+driver to emulate the binary firmware that we will eventually be
+able to access via NVRAM on the SCU controller.
+
+The current size of the binary blob is expected to be 149 bytes or larger
+
+Header Types:
+0x1: Phy Masks
+0x2: Phy Gens
+0x3: SAS Addrs
+0xff: End of Data
+
+ID string - u8[12]: "#SCU MAGIC#\0"
+Version - u8: 1
+SubVersion - u8: 0
+
+Header Type - u8: 0x1
+Size - u8: 8
+Phy Mask - u32[8]
+
+Header Type - u8: 0x2
+Size - u8: 8
+Phy Gen - u32[8]
+
+Header Type - u8: 0x3
+Size - u8: 8
+Sas Addr - u64[8]
+
+Header Type - u8: 0xf
+
+
+==============================================================================
+
+Place isci_firmware.bin in /lib/firmware
+Be sure to recreate the initramfs image to include the firmware.
+
diff --git a/drivers/scsi/isci/firmware/create_fw.c b/drivers/scsi/isci/firmware/create_fw.c
new file mode 100644
index 0000000..c7a2887
--- /dev/null
+++ b/drivers/scsi/isci/firmware/create_fw.c
@@ -0,0 +1,99 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+#include <asm/types.h>
+#include <strings.h>
+#include <stdint.h>
+
+#include "create_fw.h"
+#include "../probe_roms.h"
+
+int write_blob(struct isci_orom *isci_orom)
+{
+	FILE *fd;
+	int err;
+	size_t count;
+
+	fd = fopen(blob_name, "w+");
+	if (!fd) {
+		perror("Open file for write failed");
+		fclose(fd);
+		return -EIO;
+	}
+
+	count = fwrite(isci_orom, sizeof(struct isci_orom), 1, fd);
+	if (count != 1) {
+		perror("Write data failed");
+		fclose(fd);
+		return -EIO;
+	}
+
+	fclose(fd);
+
+	return 0;
+}
+
+void set_binary_values(struct isci_orom *isci_orom)
+{
+	int ctrl_idx, phy_idx, port_idx;
+
+	/* setting OROM signature */
+	strncpy(isci_orom->hdr.signature, sig, strlen(sig));
+	isci_orom->hdr.version = version;
+	isci_orom->hdr.total_block_length = sizeof(struct isci_orom);
+	isci_orom->hdr.hdr_length = sizeof(struct sci_bios_oem_param_block_hdr);
+	isci_orom->hdr.num_elements = num_elements;
+
+	for (ctrl_idx = 0; ctrl_idx < 2; ctrl_idx++) {
+		isci_orom->ctrl[ctrl_idx].controller.mode_type = mode_type;
+		isci_orom->ctrl[ctrl_idx].controller.max_concurrent_dev_spin_up =
+			max_num_concurrent_dev_spin_up;
+		isci_orom->ctrl[ctrl_idx].controller.do_enable_ssc =
+			enable_ssc;
+
+		for (port_idx = 0; port_idx < 4; port_idx++)
+			isci_orom->ctrl[ctrl_idx].ports[port_idx].phy_mask =
+				phy_mask[ctrl_idx][port_idx];
+
+		for (phy_idx = 0; phy_idx < 4; phy_idx++) {
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].sas_address.high =
+				(__u32)(sas_addr[ctrl_idx][phy_idx] >> 32);
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].sas_address.low =
+				(__u32)(sas_addr[ctrl_idx][phy_idx]);
+
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control0 =
+				afe_tx_amp_control0;
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control1 =
+				afe_tx_amp_control1;
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control2 =
+				afe_tx_amp_control2;
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control3 =
+				afe_tx_amp_control3;
+		}
+	}
+}
+
+int main(void)
+{
+	int err;
+	struct isci_orom *isci_orom;
+
+	isci_orom = malloc(sizeof(struct isci_orom));
+	memset(isci_orom, 0, sizeof(struct isci_orom));
+
+	set_binary_values(isci_orom);
+
+	err = write_blob(isci_orom);
+	if (err < 0) {
+		free(isci_orom);
+		return err;
+	}
+
+	free(isci_orom);
+	return 0;
+}
diff --git a/drivers/scsi/isci/firmware/create_fw.h b/drivers/scsi/isci/firmware/create_fw.h
new file mode 100644
index 0000000..5f29882
--- /dev/null
+++ b/drivers/scsi/isci/firmware/create_fw.h
@@ -0,0 +1,77 @@
+#ifndef _CREATE_FW_H_
+#define _CREATE_FW_H_
+#include "../probe_roms.h"
+
+
+/* we are configuring for 2 SCUs */
+static const int num_elements = 2;
+
+/*
+ * For all defined arrays:
+ * elements 0-3 are for SCU0, ports 0-3
+ * elements 4-7 are for SCU1, ports 0-3
+ *
+ * valid configurations for one SCU are:
+ *  P0  P1  P2  P3
+ * ----------------
+ * 0xF,0x0,0x0,0x0 # 1 x4 port
+ * 0x3,0x0,0x4,0x8 # Phys 0 and 1 are a x2 port, phy 2 and phy 3 are each x1
+ *                 # ports
+ * 0x1,0x2,0xC,0x0 # Phys 0 and 1 are each x1 ports, phy 2 and phy 3 are a x2
+ *                 # port
+ * 0x3,0x0,0xC,0x0 # Phys 0 and 1 are a x2 port, phy 2 and phy 3 are a x2 port
+ * 0x1,0x2,0x4,0x8 # Each phy is a x1 port (this is the default configuration)
+ *
+ * if there is a port/phy on which you do not wish to override the default
+ * values, use the value assigned to UNINIT_PARAM (255).
+ */
+
+/* discovery mode type (port auto config mode by default ) */
+
+/*
+ * if there is a port/phy on which you do not wish to override the default
+ * values, use the value "0000000000000000". SAS address of zero's is
+ * considered invalid and will not be used.
+ */
+#ifdef MPC
+static const int mode_type = SCIC_PORT_MANUAL_CONFIGURATION_MODE;
+static const __u8 phy_mask[2][4] = { {1, 2, 4, 8},
+				     {1, 2, 4, 8} };
+static const unsigned long long sas_addr[2][4] = { { 0x5FCFFFFFF0000001ULL,
+						     0x5FCFFFFFF0000002ULL,
+						     0x5FCFFFFFF0000003ULL,
+						     0x5FCFFFFFF0000004ULL },
+						   { 0x5FCFFFFFF0000005ULL,
+						     0x5FCFFFFFF0000006ULL,
+						     0x5FCFFFFFF0000007ULL,
+						     0x5FCFFFFFF0000008ULL } };
+#else	/* APC (default) */
+static const int mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE;
+static const __u8 phy_mask[2][4];
+static const unsigned long long sas_addr[2][4] = { { 0x5FCFFFFF00000001ULL,
+						     0x5FCFFFFF00000001ULL,
+						     0x5FCFFFFF00000001ULL,
+						     0x5FCFFFFF00000001ULL },
+						   { 0x5FCFFFFF00000002ULL,
+						     0x5FCFFFFF00000002ULL,
+						     0x5FCFFFFF00000002ULL,
+						     0x5FCFFFFF00000002ULL } };
+#endif
+
+/* Maximum number of concurrent device spin up */
+static const int max_num_concurrent_dev_spin_up = 1;
+
+/* enable of ssc operation */
+static const int enable_ssc;
+
+/* AFE_TX_AMP_CONTROL */
+static const unsigned int afe_tx_amp_control0 = 0x000bdd08;
+static const unsigned int afe_tx_amp_control1 = 0x000ffc00;
+static const unsigned int afe_tx_amp_control2 = 0x000b7c09;
+static const unsigned int afe_tx_amp_control3 = 0x000afc6e;
+
+static const char blob_name[] = "isci_firmware.bin";
+static const char sig[] = "ISCUOEMB";
+static const unsigned char version = 0x10;
+
+#endif
diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c
new file mode 100644
index 0000000..26072f1
--- /dev/null
+++ b/drivers/scsi/isci/host.c
@@ -0,0 +1,2751 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <linux/circ_buf.h>
+#include <linux/device.h>
+#include <scsi/sas.h>
+#include "host.h"
+#include "isci.h"
+#include "port.h"
+#include "host.h"
+#include "probe_roms.h"
+#include "remote_device.h"
+#include "request.h"
+#include "scu_completion_codes.h"
+#include "scu_event_codes.h"
+#include "registers.h"
+#include "scu_remote_node_context.h"
+#include "scu_task_context.h"
+
+#define SCU_CONTEXT_RAM_INIT_STALL_TIME      200
+
+#define smu_max_ports(dcc_value) \
+	(\
+		(((dcc_value) & SMU_DEVICE_CONTEXT_CAPACITY_MAX_LP_MASK) \
+		 >> SMU_DEVICE_CONTEXT_CAPACITY_MAX_LP_SHIFT) + 1 \
+	)
+
+#define smu_max_task_contexts(dcc_value)	\
+	(\
+		(((dcc_value) & SMU_DEVICE_CONTEXT_CAPACITY_MAX_TC_MASK) \
+		 >> SMU_DEVICE_CONTEXT_CAPACITY_MAX_TC_SHIFT) + 1 \
+	)
+
+#define smu_max_rncs(dcc_value) \
+	(\
+		(((dcc_value) & SMU_DEVICE_CONTEXT_CAPACITY_MAX_RNC_MASK) \
+		 >> SMU_DEVICE_CONTEXT_CAPACITY_MAX_RNC_SHIFT) + 1 \
+	)
+
+#define SCIC_SDS_CONTROLLER_PHY_START_TIMEOUT      100
+
+/**
+ *
+ *
+ * The number of milliseconds to wait while a given phy is consuming power
+ * before allowing another set of phys to consume power. Ultimately, this will
+ * be specified by OEM parameter.
+ */
+#define SCIC_SDS_CONTROLLER_POWER_CONTROL_INTERVAL 500
+
+/**
+ * NORMALIZE_PUT_POINTER() -
+ *
+ * This macro will normalize the completion queue put pointer so its value can
+ * be used as an array inde
+ */
+#define NORMALIZE_PUT_POINTER(x) \
+	((x) & SMU_COMPLETION_QUEUE_PUT_POINTER_MASK)
+
+
+/**
+ * NORMALIZE_EVENT_POINTER() -
+ *
+ * This macro will normalize the completion queue event entry so its value can
+ * be used as an index.
+ */
+#define NORMALIZE_EVENT_POINTER(x) \
+	(\
+		((x) & SMU_COMPLETION_QUEUE_GET_EVENT_POINTER_MASK) \
+		>> SMU_COMPLETION_QUEUE_GET_EVENT_POINTER_SHIFT	\
+	)
+
+/**
+ * NORMALIZE_GET_POINTER() -
+ *
+ * This macro will normalize the completion queue get pointer so its value can
+ * be used as an index into an array
+ */
+#define NORMALIZE_GET_POINTER(x) \
+	((x) & SMU_COMPLETION_QUEUE_GET_POINTER_MASK)
+
+/**
+ * NORMALIZE_GET_POINTER_CYCLE_BIT() -
+ *
+ * This macro will normalize the completion queue cycle pointer so it matches
+ * the completion queue cycle bit
+ */
+#define NORMALIZE_GET_POINTER_CYCLE_BIT(x) \
+	((SMU_CQGR_CYCLE_BIT & (x)) << (31 - SMU_COMPLETION_QUEUE_GET_CYCLE_BIT_SHIFT))
+
+/**
+ * COMPLETION_QUEUE_CYCLE_BIT() -
+ *
+ * This macro will return the cycle bit of the completion queue entry
+ */
+#define COMPLETION_QUEUE_CYCLE_BIT(x) ((x) & 0x80000000)
+
+/* Init the state machine and call the state entry function (if any) */
+void sci_init_sm(struct sci_base_state_machine *sm,
+		 const struct sci_base_state *state_table, u32 initial_state)
+{
+	sci_state_transition_t handler;
+
+	sm->initial_state_id    = initial_state;
+	sm->previous_state_id   = initial_state;
+	sm->current_state_id    = initial_state;
+	sm->state_table         = state_table;
+
+	handler = sm->state_table[initial_state].enter_state;
+	if (handler)
+		handler(sm);
+}
+
+/* Call the state exit fn, update the current state, call the state entry fn */
+void sci_change_state(struct sci_base_state_machine *sm, u32 next_state)
+{
+	sci_state_transition_t handler;
+
+	handler = sm->state_table[sm->current_state_id].exit_state;
+	if (handler)
+		handler(sm);
+
+	sm->previous_state_id = sm->current_state_id;
+	sm->current_state_id = next_state;
+
+	handler = sm->state_table[sm->current_state_id].enter_state;
+	if (handler)
+		handler(sm);
+}
+
+static bool sci_controller_completion_queue_has_entries(struct isci_host *ihost)
+{
+	u32 get_value = ihost->completion_queue_get;
+	u32 get_index = get_value & SMU_COMPLETION_QUEUE_GET_POINTER_MASK;
+
+	if (NORMALIZE_GET_POINTER_CYCLE_BIT(get_value) ==
+	    COMPLETION_QUEUE_CYCLE_BIT(ihost->completion_queue[get_index]))
+		return true;
+
+	return false;
+}
+
+static bool sci_controller_isr(struct isci_host *ihost)
+{
+	if (sci_controller_completion_queue_has_entries(ihost)) {
+		return true;
+	} else {
+		/*
+		 * we have a spurious interrupt it could be that we have already
+		 * emptied the completion queue from a previous interrupt */
+		writel(SMU_ISR_COMPLETION, &ihost->smu_registers->interrupt_status);
+
+		/*
+		 * There is a race in the hardware that could cause us not to be notified
+		 * of an interrupt completion if we do not take this step.  We will mask
+		 * then unmask the interrupts so if there is another interrupt pending
+		 * the clearing of the interrupt source we get the next interrupt message. */
+		writel(0xFF000000, &ihost->smu_registers->interrupt_mask);
+		writel(0, &ihost->smu_registers->interrupt_mask);
+	}
+
+	return false;
+}
+
+irqreturn_t isci_msix_isr(int vec, void *data)
+{
+	struct isci_host *ihost = data;
+
+	if (sci_controller_isr(ihost))
+		tasklet_schedule(&ihost->completion_tasklet);
+
+	return IRQ_HANDLED;
+}
+
+static bool sci_controller_error_isr(struct isci_host *ihost)
+{
+	u32 interrupt_status;
+
+	interrupt_status =
+		readl(&ihost->smu_registers->interrupt_status);
+	interrupt_status &= (SMU_ISR_QUEUE_ERROR | SMU_ISR_QUEUE_SUSPEND);
+
+	if (interrupt_status != 0) {
+		/*
+		 * There is an error interrupt pending so let it through and handle
+		 * in the callback */
+		return true;
+	}
+
+	/*
+	 * There is a race in the hardware that could cause us not to be notified
+	 * of an interrupt completion if we do not take this step.  We will mask
+	 * then unmask the error interrupts so if there was another interrupt
+	 * pending we will be notified.
+	 * Could we write the value of (SMU_ISR_QUEUE_ERROR | SMU_ISR_QUEUE_SUSPEND)? */
+	writel(0xff, &ihost->smu_registers->interrupt_mask);
+	writel(0, &ihost->smu_registers->interrupt_mask);
+
+	return false;
+}
+
+static void sci_controller_task_completion(struct isci_host *ihost, u32 ent)
+{
+	u32 index = SCU_GET_COMPLETION_INDEX(ent);
+	struct isci_request *ireq = ihost->reqs[index];
+
+	/* Make sure that we really want to process this IO request */
+	if (test_bit(IREQ_ACTIVE, &ireq->flags) &&
+	    ireq->io_tag != SCI_CONTROLLER_INVALID_IO_TAG &&
+	    ISCI_TAG_SEQ(ireq->io_tag) == ihost->io_request_sequence[index])
+		/* Yep this is a valid io request pass it along to the
+		 * io request handler
+		 */
+		sci_io_request_tc_completion(ireq, ent);
+}
+
+static void sci_controller_sdma_completion(struct isci_host *ihost, u32 ent)
+{
+	u32 index;
+	struct isci_request *ireq;
+	struct isci_remote_device *idev;
+
+	index = SCU_GET_COMPLETION_INDEX(ent);
+
+	switch (scu_get_command_request_type(ent)) {
+	case SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC:
+	case SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_TC:
+		ireq = ihost->reqs[index];
+		dev_warn(&ihost->pdev->dev, "%s: %x for io request %p\n",
+			 __func__, ent, ireq);
+		/* @todo For a post TC operation we need to fail the IO
+		 * request
+		 */
+		break;
+	case SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_RNC:
+	case SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC:
+	case SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC:
+		idev = ihost->device_table[index];
+		dev_warn(&ihost->pdev->dev, "%s: %x for device %p\n",
+			 __func__, ent, idev);
+		/* @todo For a port RNC operation we need to fail the
+		 * device
+		 */
+		break;
+	default:
+		dev_warn(&ihost->pdev->dev, "%s: unknown completion type %x\n",
+			 __func__, ent);
+		break;
+	}
+}
+
+static void sci_controller_unsolicited_frame(struct isci_host *ihost, u32 ent)
+{
+	u32 index;
+	u32 frame_index;
+
+	struct scu_unsolicited_frame_header *frame_header;
+	struct isci_phy *iphy;
+	struct isci_remote_device *idev;
+
+	enum sci_status result = SCI_FAILURE;
+
+	frame_index = SCU_GET_FRAME_INDEX(ent);
+
+	frame_header = ihost->uf_control.buffers.array[frame_index].header;
+	ihost->uf_control.buffers.array[frame_index].state = UNSOLICITED_FRAME_IN_USE;
+
+	if (SCU_GET_FRAME_ERROR(ent)) {
+		/*
+		 * / @todo If the IAF frame or SIGNATURE FIS frame has an error will
+		 * /       this cause a problem? We expect the phy initialization will
+		 * /       fail if there is an error in the frame. */
+		sci_controller_release_frame(ihost, frame_index);
+		return;
+	}
+
+	if (frame_header->is_address_frame) {
+		index = SCU_GET_PROTOCOL_ENGINE_INDEX(ent);
+		iphy = &ihost->phys[index];
+		result = sci_phy_frame_handler(iphy, frame_index);
+	} else {
+
+		index = SCU_GET_COMPLETION_INDEX(ent);
+
+		if (index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) {
+			/*
+			 * This is a signature fis or a frame from a direct attached SATA
+			 * device that has not yet been created.  In either case forwared
+			 * the frame to the PE and let it take care of the frame data. */
+			index = SCU_GET_PROTOCOL_ENGINE_INDEX(ent);
+			iphy = &ihost->phys[index];
+			result = sci_phy_frame_handler(iphy, frame_index);
+		} else {
+			if (index < ihost->remote_node_entries)
+				idev = ihost->device_table[index];
+			else
+				idev = NULL;
+
+			if (idev != NULL)
+				result = sci_remote_device_frame_handler(idev, frame_index);
+			else
+				sci_controller_release_frame(ihost, frame_index);
+		}
+	}
+
+	if (result != SCI_SUCCESS) {
+		/*
+		 * / @todo Is there any reason to report some additional error message
+		 * /       when we get this failure notifiction? */
+	}
+}
+
+static void sci_controller_event_completion(struct isci_host *ihost, u32 ent)
+{
+	struct isci_remote_device *idev;
+	struct isci_request *ireq;
+	struct isci_phy *iphy;
+	u32 index;
+
+	index = SCU_GET_COMPLETION_INDEX(ent);
+
+	switch (scu_get_event_type(ent)) {
+	case SCU_EVENT_TYPE_SMU_COMMAND_ERROR:
+		/* / @todo The driver did something wrong and we need to fix the condtion. */
+		dev_err(&ihost->pdev->dev,
+			"%s: SCIC Controller 0x%p received SMU command error "
+			"0x%x\n",
+			__func__,
+			ihost,
+			ent);
+		break;
+
+	case SCU_EVENT_TYPE_SMU_PCQ_ERROR:
+	case SCU_EVENT_TYPE_SMU_ERROR:
+	case SCU_EVENT_TYPE_FATAL_MEMORY_ERROR:
+		/*
+		 * / @todo This is a hardware failure and its likely that we want to
+		 * /       reset the controller. */
+		dev_err(&ihost->pdev->dev,
+			"%s: SCIC Controller 0x%p received fatal controller "
+			"event  0x%x\n",
+			__func__,
+			ihost,
+			ent);
+		break;
+
+	case SCU_EVENT_TYPE_TRANSPORT_ERROR:
+		ireq = ihost->reqs[index];
+		sci_io_request_event_handler(ireq, ent);
+		break;
+
+	case SCU_EVENT_TYPE_PTX_SCHEDULE_EVENT:
+		switch (scu_get_event_specifier(ent)) {
+		case SCU_EVENT_SPECIFIC_SMP_RESPONSE_NO_PE:
+		case SCU_EVENT_SPECIFIC_TASK_TIMEOUT:
+			ireq = ihost->reqs[index];
+			if (ireq != NULL)
+				sci_io_request_event_handler(ireq, ent);
+			else
+				dev_warn(&ihost->pdev->dev,
+					 "%s: SCIC Controller 0x%p received "
+					 "event 0x%x for io request object "
+					 "that doesnt exist.\n",
+					 __func__,
+					 ihost,
+					 ent);
+
+			break;
+
+		case SCU_EVENT_SPECIFIC_IT_NEXUS_TIMEOUT:
+			idev = ihost->device_table[index];
+			if (idev != NULL)
+				sci_remote_device_event_handler(idev, ent);
+			else
+				dev_warn(&ihost->pdev->dev,
+					 "%s: SCIC Controller 0x%p received "
+					 "event 0x%x for remote device object "
+					 "that doesnt exist.\n",
+					 __func__,
+					 ihost,
+					 ent);
+
+			break;
+		}
+		break;
+
+	case SCU_EVENT_TYPE_BROADCAST_CHANGE:
+	/*
+	 * direct the broadcast change event to the phy first and then let
+	 * the phy redirect the broadcast change to the port object */
+	case SCU_EVENT_TYPE_ERR_CNT_EVENT:
+	/*
+	 * direct error counter event to the phy object since that is where
+	 * we get the event notification.  This is a type 4 event. */
+	case SCU_EVENT_TYPE_OSSP_EVENT:
+		index = SCU_GET_PROTOCOL_ENGINE_INDEX(ent);
+		iphy = &ihost->phys[index];
+		sci_phy_event_handler(iphy, ent);
+		break;
+
+	case SCU_EVENT_TYPE_RNC_SUSPEND_TX:
+	case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX:
+	case SCU_EVENT_TYPE_RNC_OPS_MISC:
+		if (index < ihost->remote_node_entries) {
+			idev = ihost->device_table[index];
+
+			if (idev != NULL)
+				sci_remote_device_event_handler(idev, ent);
+		} else
+			dev_err(&ihost->pdev->dev,
+				"%s: SCIC Controller 0x%p received event 0x%x "
+				"for remote device object 0x%0x that doesnt "
+				"exist.\n",
+				__func__,
+				ihost,
+				ent,
+				index);
+
+		break;
+
+	default:
+		dev_warn(&ihost->pdev->dev,
+			 "%s: SCIC Controller received unknown event code %x\n",
+			 __func__,
+			 ent);
+		break;
+	}
+}
+
+static void sci_controller_process_completions(struct isci_host *ihost)
+{
+	u32 completion_count = 0;
+	u32 ent;
+	u32 get_index;
+	u32 get_cycle;
+	u32 event_get;
+	u32 event_cycle;
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: completion queue begining get:0x%08x\n",
+		__func__,
+		ihost->completion_queue_get);
+
+	/* Get the component parts of the completion queue */
+	get_index = NORMALIZE_GET_POINTER(ihost->completion_queue_get);
+	get_cycle = SMU_CQGR_CYCLE_BIT & ihost->completion_queue_get;
+
+	event_get = NORMALIZE_EVENT_POINTER(ihost->completion_queue_get);
+	event_cycle = SMU_CQGR_EVENT_CYCLE_BIT & ihost->completion_queue_get;
+
+	while (
+		NORMALIZE_GET_POINTER_CYCLE_BIT(get_cycle)
+		== COMPLETION_QUEUE_CYCLE_BIT(ihost->completion_queue[get_index])
+		) {
+		completion_count++;
+
+		ent = ihost->completion_queue[get_index];
+
+		/* increment the get pointer and check for rollover to toggle the cycle bit */
+		get_cycle ^= ((get_index+1) & SCU_MAX_COMPLETION_QUEUE_ENTRIES) <<
+			     (SMU_COMPLETION_QUEUE_GET_CYCLE_BIT_SHIFT - SCU_MAX_COMPLETION_QUEUE_SHIFT);
+		get_index = (get_index+1) & (SCU_MAX_COMPLETION_QUEUE_ENTRIES-1);
+
+		dev_dbg(&ihost->pdev->dev,
+			"%s: completion queue entry:0x%08x\n",
+			__func__,
+			ent);
+
+		switch (SCU_GET_COMPLETION_TYPE(ent)) {
+		case SCU_COMPLETION_TYPE_TASK:
+			sci_controller_task_completion(ihost, ent);
+			break;
+
+		case SCU_COMPLETION_TYPE_SDMA:
+			sci_controller_sdma_completion(ihost, ent);
+			break;
+
+		case SCU_COMPLETION_TYPE_UFI:
+			sci_controller_unsolicited_frame(ihost, ent);
+			break;
+
+		case SCU_COMPLETION_TYPE_EVENT:
+		case SCU_COMPLETION_TYPE_NOTIFY: {
+			event_cycle ^= ((event_get+1) & SCU_MAX_EVENTS) <<
+				       (SMU_COMPLETION_QUEUE_GET_EVENT_CYCLE_BIT_SHIFT - SCU_MAX_EVENTS_SHIFT);
+			event_get = (event_get+1) & (SCU_MAX_EVENTS-1);
+
+			sci_controller_event_completion(ihost, ent);
+			break;
+		}
+		default:
+			dev_warn(&ihost->pdev->dev,
+				 "%s: SCIC Controller received unknown "
+				 "completion type %x\n",
+				 __func__,
+				 ent);
+			break;
+		}
+	}
+
+	/* Update the get register if we completed one or more entries */
+	if (completion_count > 0) {
+		ihost->completion_queue_get =
+			SMU_CQGR_GEN_BIT(ENABLE) |
+			SMU_CQGR_GEN_BIT(EVENT_ENABLE) |
+			event_cycle |
+			SMU_CQGR_GEN_VAL(EVENT_POINTER, event_get) |
+			get_cycle |
+			SMU_CQGR_GEN_VAL(POINTER, get_index);
+
+		writel(ihost->completion_queue_get,
+		       &ihost->smu_registers->completion_queue_get);
+
+	}
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: completion queue ending get:0x%08x\n",
+		__func__,
+		ihost->completion_queue_get);
+
+}
+
+static void sci_controller_error_handler(struct isci_host *ihost)
+{
+	u32 interrupt_status;
+
+	interrupt_status =
+		readl(&ihost->smu_registers->interrupt_status);
+
+	if ((interrupt_status & SMU_ISR_QUEUE_SUSPEND) &&
+	    sci_controller_completion_queue_has_entries(ihost)) {
+
+		sci_controller_process_completions(ihost);
+		writel(SMU_ISR_QUEUE_SUSPEND, &ihost->smu_registers->interrupt_status);
+	} else {
+		dev_err(&ihost->pdev->dev, "%s: status: %#x\n", __func__,
+			interrupt_status);
+
+		sci_change_state(&ihost->sm, SCIC_FAILED);
+
+		return;
+	}
+
+	/* If we dont process any completions I am not sure that we want to do this.
+	 * We are in the middle of a hardware fault and should probably be reset.
+	 */
+	writel(0, &ihost->smu_registers->interrupt_mask);
+}
+
+irqreturn_t isci_intx_isr(int vec, void *data)
+{
+	irqreturn_t ret = IRQ_NONE;
+	struct isci_host *ihost = data;
+
+	if (sci_controller_isr(ihost)) {
+		writel(SMU_ISR_COMPLETION, &ihost->smu_registers->interrupt_status);
+		tasklet_schedule(&ihost->completion_tasklet);
+		ret = IRQ_HANDLED;
+	} else if (sci_controller_error_isr(ihost)) {
+		spin_lock(&ihost->scic_lock);
+		sci_controller_error_handler(ihost);
+		spin_unlock(&ihost->scic_lock);
+		ret = IRQ_HANDLED;
+	}
+
+	return ret;
+}
+
+irqreturn_t isci_error_isr(int vec, void *data)
+{
+	struct isci_host *ihost = data;
+
+	if (sci_controller_error_isr(ihost))
+		sci_controller_error_handler(ihost);
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * isci_host_start_complete() - This function is called by the core library,
+ *    through the ISCI Module, to indicate controller start status.
+ * @isci_host: This parameter specifies the ISCI host object
+ * @completion_status: This parameter specifies the completion status from the
+ *    core library.
+ *
+ */
+static void isci_host_start_complete(struct isci_host *ihost, enum sci_status completion_status)
+{
+	if (completion_status != SCI_SUCCESS)
+		dev_info(&ihost->pdev->dev,
+			"controller start timed out, continuing...\n");
+	isci_host_change_state(ihost, isci_ready);
+	clear_bit(IHOST_START_PENDING, &ihost->flags);
+	wake_up(&ihost->eventq);
+}
+
+int isci_host_scan_finished(struct Scsi_Host *shost, unsigned long time)
+{
+	struct isci_host *ihost = SHOST_TO_SAS_HA(shost)->lldd_ha;
+
+	if (test_bit(IHOST_START_PENDING, &ihost->flags))
+		return 0;
+
+	/* todo: use sas_flush_discovery once it is upstream */
+	scsi_flush_work(shost);
+
+	scsi_flush_work(shost);
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: ihost->status = %d, time = %ld\n",
+		 __func__, isci_host_get_state(ihost), time);
+
+	return 1;
+
+}
+
+/**
+ * sci_controller_get_suggested_start_timeout() - This method returns the
+ *    suggested sci_controller_start() timeout amount.  The user is free to
+ *    use any timeout value, but this method provides the suggested minimum
+ *    start timeout value.  The returned value is based upon empirical
+ *    information determined as a result of interoperability testing.
+ * @controller: the handle to the controller object for which to return the
+ *    suggested start timeout.
+ *
+ * This method returns the number of milliseconds for the suggested start
+ * operation timeout.
+ */
+static u32 sci_controller_get_suggested_start_timeout(struct isci_host *ihost)
+{
+	/* Validate the user supplied parameters. */
+	if (!ihost)
+		return 0;
+
+	/*
+	 * The suggested minimum timeout value for a controller start operation:
+	 *
+	 *     Signature FIS Timeout
+	 *   + Phy Start Timeout
+	 *   + Number of Phy Spin Up Intervals
+	 *   ---------------------------------
+	 *   Number of milliseconds for the controller start operation.
+	 *
+	 * NOTE: The number of phy spin up intervals will be equivalent
+	 *       to the number of phys divided by the number phys allowed
+	 *       per interval - 1 (once OEM parameters are supported).
+	 *       Currently we assume only 1 phy per interval. */
+
+	return SCIC_SDS_SIGNATURE_FIS_TIMEOUT
+		+ SCIC_SDS_CONTROLLER_PHY_START_TIMEOUT
+		+ ((SCI_MAX_PHYS - 1) * SCIC_SDS_CONTROLLER_POWER_CONTROL_INTERVAL);
+}
+
+static void sci_controller_enable_interrupts(struct isci_host *ihost)
+{
+	BUG_ON(ihost->smu_registers == NULL);
+	writel(0, &ihost->smu_registers->interrupt_mask);
+}
+
+void sci_controller_disable_interrupts(struct isci_host *ihost)
+{
+	BUG_ON(ihost->smu_registers == NULL);
+	writel(0xffffffff, &ihost->smu_registers->interrupt_mask);
+}
+
+static void sci_controller_enable_port_task_scheduler(struct isci_host *ihost)
+{
+	u32 port_task_scheduler_value;
+
+	port_task_scheduler_value =
+		readl(&ihost->scu_registers->peg0.ptsg.control);
+	port_task_scheduler_value |=
+		(SCU_PTSGCR_GEN_BIT(ETM_ENABLE) |
+		 SCU_PTSGCR_GEN_BIT(PTSG_ENABLE));
+	writel(port_task_scheduler_value,
+	       &ihost->scu_registers->peg0.ptsg.control);
+}
+
+static void sci_controller_assign_task_entries(struct isci_host *ihost)
+{
+	u32 task_assignment;
+
+	/*
+	 * Assign all the TCs to function 0
+	 * TODO: Do we actually need to read this register to write it back?
+	 */
+
+	task_assignment =
+		readl(&ihost->smu_registers->task_context_assignment[0]);
+
+	task_assignment |= (SMU_TCA_GEN_VAL(STARTING, 0)) |
+		(SMU_TCA_GEN_VAL(ENDING,  ihost->task_context_entries - 1)) |
+		(SMU_TCA_GEN_BIT(RANGE_CHECK_ENABLE));
+
+	writel(task_assignment,
+		&ihost->smu_registers->task_context_assignment[0]);
+
+}
+
+static void sci_controller_initialize_completion_queue(struct isci_host *ihost)
+{
+	u32 index;
+	u32 completion_queue_control_value;
+	u32 completion_queue_get_value;
+	u32 completion_queue_put_value;
+
+	ihost->completion_queue_get = 0;
+
+	completion_queue_control_value =
+		(SMU_CQC_QUEUE_LIMIT_SET(SCU_MAX_COMPLETION_QUEUE_ENTRIES - 1) |
+		 SMU_CQC_EVENT_LIMIT_SET(SCU_MAX_EVENTS - 1));
+
+	writel(completion_queue_control_value,
+	       &ihost->smu_registers->completion_queue_control);
+
+
+	/* Set the completion queue get pointer and enable the queue */
+	completion_queue_get_value = (
+		(SMU_CQGR_GEN_VAL(POINTER, 0))
+		| (SMU_CQGR_GEN_VAL(EVENT_POINTER, 0))
+		| (SMU_CQGR_GEN_BIT(ENABLE))
+		| (SMU_CQGR_GEN_BIT(EVENT_ENABLE))
+		);
+
+	writel(completion_queue_get_value,
+	       &ihost->smu_registers->completion_queue_get);
+
+	/* Set the completion queue put pointer */
+	completion_queue_put_value = (
+		(SMU_CQPR_GEN_VAL(POINTER, 0))
+		| (SMU_CQPR_GEN_VAL(EVENT_POINTER, 0))
+		);
+
+	writel(completion_queue_put_value,
+	       &ihost->smu_registers->completion_queue_put);
+
+	/* Initialize the cycle bit of the completion queue entries */
+	for (index = 0; index < SCU_MAX_COMPLETION_QUEUE_ENTRIES; index++) {
+		/*
+		 * If get.cycle_bit != completion_queue.cycle_bit
+		 * its not a valid completion queue entry
+		 * so at system start all entries are invalid */
+		ihost->completion_queue[index] = 0x80000000;
+	}
+}
+
+static void sci_controller_initialize_unsolicited_frame_queue(struct isci_host *ihost)
+{
+	u32 frame_queue_control_value;
+	u32 frame_queue_get_value;
+	u32 frame_queue_put_value;
+
+	/* Write the queue size */
+	frame_queue_control_value =
+		SCU_UFQC_GEN_VAL(QUEUE_SIZE, SCU_MAX_UNSOLICITED_FRAMES);
+
+	writel(frame_queue_control_value,
+	       &ihost->scu_registers->sdma.unsolicited_frame_queue_control);
+
+	/* Setup the get pointer for the unsolicited frame queue */
+	frame_queue_get_value = (
+		SCU_UFQGP_GEN_VAL(POINTER, 0)
+		|  SCU_UFQGP_GEN_BIT(ENABLE_BIT)
+		);
+
+	writel(frame_queue_get_value,
+	       &ihost->scu_registers->sdma.unsolicited_frame_get_pointer);
+	/* Setup the put pointer for the unsolicited frame queue */
+	frame_queue_put_value = SCU_UFQPP_GEN_VAL(POINTER, 0);
+	writel(frame_queue_put_value,
+	       &ihost->scu_registers->sdma.unsolicited_frame_put_pointer);
+}
+
+static void sci_controller_transition_to_ready(struct isci_host *ihost, enum sci_status status)
+{
+	if (ihost->sm.current_state_id == SCIC_STARTING) {
+		/*
+		 * We move into the ready state, because some of the phys/ports
+		 * may be up and operational.
+		 */
+		sci_change_state(&ihost->sm, SCIC_READY);
+
+		isci_host_start_complete(ihost, status);
+	}
+}
+
+static bool is_phy_starting(struct isci_phy *iphy)
+{
+	enum sci_phy_states state;
+
+	state = iphy->sm.current_state_id;
+	switch (state) {
+	case SCI_PHY_STARTING:
+	case SCI_PHY_SUB_INITIAL:
+	case SCI_PHY_SUB_AWAIT_SAS_SPEED_EN:
+	case SCI_PHY_SUB_AWAIT_IAF_UF:
+	case SCI_PHY_SUB_AWAIT_SAS_POWER:
+	case SCI_PHY_SUB_AWAIT_SATA_POWER:
+	case SCI_PHY_SUB_AWAIT_SATA_PHY_EN:
+	case SCI_PHY_SUB_AWAIT_SATA_SPEED_EN:
+	case SCI_PHY_SUB_AWAIT_SIG_FIS_UF:
+	case SCI_PHY_SUB_FINAL:
+		return true;
+	default:
+		return false;
+	}
+}
+
+/**
+ * sci_controller_start_next_phy - start phy
+ * @scic: controller
+ *
+ * If all the phys have been started, then attempt to transition the
+ * controller to the READY state and inform the user
+ * (sci_cb_controller_start_complete()).
+ */
+static enum sci_status sci_controller_start_next_phy(struct isci_host *ihost)
+{
+	struct sci_oem_params *oem = &ihost->oem_parameters;
+	struct isci_phy *iphy;
+	enum sci_status status;
+
+	status = SCI_SUCCESS;
+
+	if (ihost->phy_startup_timer_pending)
+		return status;
+
+	if (ihost->next_phy_to_start >= SCI_MAX_PHYS) {
+		bool is_controller_start_complete = true;
+		u32 state;
+		u8 index;
+
+		for (index = 0; index < SCI_MAX_PHYS; index++) {
+			iphy = &ihost->phys[index];
+			state = iphy->sm.current_state_id;
+
+			if (!phy_get_non_dummy_port(iphy))
+				continue;
+
+			/* The controller start operation is complete iff:
+			 * - all links have been given an opportunity to start
+			 * - have no indication of a connected device
+			 * - have an indication of a connected device and it has
+			 *   finished the link training process.
+			 */
+			if ((iphy->is_in_link_training == false && state == SCI_PHY_INITIAL) ||
+			    (iphy->is_in_link_training == false && state == SCI_PHY_STOPPED) ||
+			    (iphy->is_in_link_training == true && is_phy_starting(iphy))) {
+				is_controller_start_complete = false;
+				break;
+			}
+		}
+
+		/*
+		 * The controller has successfully finished the start process.
+		 * Inform the SCI Core user and transition to the READY state. */
+		if (is_controller_start_complete == true) {
+			sci_controller_transition_to_ready(ihost, SCI_SUCCESS);
+			sci_del_timer(&ihost->phy_timer);
+			ihost->phy_startup_timer_pending = false;
+		}
+	} else {
+		iphy = &ihost->phys[ihost->next_phy_to_start];
+
+		if (oem->controller.mode_type == SCIC_PORT_MANUAL_CONFIGURATION_MODE) {
+			if (phy_get_non_dummy_port(iphy) == NULL) {
+				ihost->next_phy_to_start++;
+
+				/* Caution recursion ahead be forwarned
+				 *
+				 * The PHY was never added to a PORT in MPC mode
+				 * so start the next phy in sequence This phy
+				 * will never go link up and will not draw power
+				 * the OEM parameters either configured the phy
+				 * incorrectly for the PORT or it was never
+				 * assigned to a PORT
+				 */
+				return sci_controller_start_next_phy(ihost);
+			}
+		}
+
+		status = sci_phy_start(iphy);
+
+		if (status == SCI_SUCCESS) {
+			sci_mod_timer(&ihost->phy_timer,
+				      SCIC_SDS_CONTROLLER_PHY_START_TIMEOUT);
+			ihost->phy_startup_timer_pending = true;
+		} else {
+			dev_warn(&ihost->pdev->dev,
+				 "%s: Controller stop operation failed "
+				 "to stop phy %d because of status "
+				 "%d.\n",
+				 __func__,
+				 ihost->phys[ihost->next_phy_to_start].phy_index,
+				 status);
+		}
+
+		ihost->next_phy_to_start++;
+	}
+
+	return status;
+}
+
+static void phy_startup_timeout(unsigned long data)
+{
+	struct sci_timer *tmr = (struct sci_timer *)data;
+	struct isci_host *ihost = container_of(tmr, typeof(*ihost), phy_timer);
+	unsigned long flags;
+	enum sci_status status;
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	if (tmr->cancel)
+		goto done;
+
+	ihost->phy_startup_timer_pending = false;
+
+	do {
+		status = sci_controller_start_next_phy(ihost);
+	} while (status != SCI_SUCCESS);
+
+done:
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
+
+static u16 isci_tci_active(struct isci_host *ihost)
+{
+	return CIRC_CNT(ihost->tci_head, ihost->tci_tail, SCI_MAX_IO_REQUESTS);
+}
+
+static enum sci_status sci_controller_start(struct isci_host *ihost,
+					     u32 timeout)
+{
+	enum sci_status result;
+	u16 index;
+
+	if (ihost->sm.current_state_id != SCIC_INITIALIZED) {
+		dev_warn(&ihost->pdev->dev,
+			 "SCIC Controller start operation requested in "
+			 "invalid state\n");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	/* Build the TCi free pool */
+	BUILD_BUG_ON(SCI_MAX_IO_REQUESTS > 1 << sizeof(ihost->tci_pool[0]) * 8);
+	ihost->tci_head = 0;
+	ihost->tci_tail = 0;
+	for (index = 0; index < ihost->task_context_entries; index++)
+		isci_tci_free(ihost, index);
+
+	/* Build the RNi free pool */
+	sci_remote_node_table_initialize(&ihost->available_remote_nodes,
+					 ihost->remote_node_entries);
+
+	/*
+	 * Before anything else lets make sure we will not be
+	 * interrupted by the hardware.
+	 */
+	sci_controller_disable_interrupts(ihost);
+
+	/* Enable the port task scheduler */
+	sci_controller_enable_port_task_scheduler(ihost);
+
+	/* Assign all the task entries to ihost physical function */
+	sci_controller_assign_task_entries(ihost);
+
+	/* Now initialize the completion queue */
+	sci_controller_initialize_completion_queue(ihost);
+
+	/* Initialize the unsolicited frame queue for use */
+	sci_controller_initialize_unsolicited_frame_queue(ihost);
+
+	/* Start all of the ports on this controller */
+	for (index = 0; index < ihost->logical_port_entries; index++) {
+		struct isci_port *iport = &ihost->ports[index];
+
+		result = sci_port_start(iport);
+		if (result)
+			return result;
+	}
+
+	sci_controller_start_next_phy(ihost);
+
+	sci_mod_timer(&ihost->timer, timeout);
+
+	sci_change_state(&ihost->sm, SCIC_STARTING);
+
+	return SCI_SUCCESS;
+}
+
+void isci_host_scan_start(struct Scsi_Host *shost)
+{
+	struct isci_host *ihost = SHOST_TO_SAS_HA(shost)->lldd_ha;
+	unsigned long tmo = sci_controller_get_suggested_start_timeout(ihost);
+
+	set_bit(IHOST_START_PENDING, &ihost->flags);
+
+	spin_lock_irq(&ihost->scic_lock);
+	sci_controller_start(ihost, tmo);
+	sci_controller_enable_interrupts(ihost);
+	spin_unlock_irq(&ihost->scic_lock);
+}
+
+static void isci_host_stop_complete(struct isci_host *ihost, enum sci_status completion_status)
+{
+	isci_host_change_state(ihost, isci_stopped);
+	sci_controller_disable_interrupts(ihost);
+	clear_bit(IHOST_STOP_PENDING, &ihost->flags);
+	wake_up(&ihost->eventq);
+}
+
+static void sci_controller_completion_handler(struct isci_host *ihost)
+{
+	/* Empty out the completion queue */
+	if (sci_controller_completion_queue_has_entries(ihost))
+		sci_controller_process_completions(ihost);
+
+	/* Clear the interrupt and enable all interrupts again */
+	writel(SMU_ISR_COMPLETION, &ihost->smu_registers->interrupt_status);
+	/* Could we write the value of SMU_ISR_COMPLETION? */
+	writel(0xFF000000, &ihost->smu_registers->interrupt_mask);
+	writel(0, &ihost->smu_registers->interrupt_mask);
+}
+
+/**
+ * isci_host_completion_routine() - This function is the delayed service
+ *    routine that calls the sci core library's completion handler. It's
+ *    scheduled as a tasklet from the interrupt service routine when interrupts
+ *    in use, or set as the timeout function in polled mode.
+ * @data: This parameter specifies the ISCI host object
+ *
+ */
+static void isci_host_completion_routine(unsigned long data)
+{
+	struct isci_host *ihost = (struct isci_host *)data;
+	struct list_head    completed_request_list;
+	struct list_head    errored_request_list;
+	struct list_head    *current_position;
+	struct list_head    *next_position;
+	struct isci_request *request;
+	struct isci_request *next_request;
+	struct sas_task     *task;
+
+	INIT_LIST_HEAD(&completed_request_list);
+	INIT_LIST_HEAD(&errored_request_list);
+
+	spin_lock_irq(&ihost->scic_lock);
+
+	sci_controller_completion_handler(ihost);
+
+	/* Take the lists of completed I/Os from the host. */
+
+	list_splice_init(&ihost->requests_to_complete,
+			 &completed_request_list);
+
+	/* Take the list of errored I/Os from the host. */
+	list_splice_init(&ihost->requests_to_errorback,
+			 &errored_request_list);
+
+	spin_unlock_irq(&ihost->scic_lock);
+
+	/* Process any completions in the lists. */
+	list_for_each_safe(current_position, next_position,
+			   &completed_request_list) {
+
+		request = list_entry(current_position, struct isci_request,
+				     completed_node);
+		task = isci_request_access_task(request);
+
+		/* Normal notification (task_done) */
+		dev_dbg(&ihost->pdev->dev,
+			"%s: Normal - request/task = %p/%p\n",
+			__func__,
+			request,
+			task);
+
+		/* Return the task to libsas */
+		if (task != NULL) {
+
+			task->lldd_task = NULL;
+			if (!(task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
+
+				/* If the task is already in the abort path,
+				* the task_done callback cannot be called.
+				*/
+				task->task_done(task);
+			}
+		}
+
+		spin_lock_irq(&ihost->scic_lock);
+		isci_free_tag(ihost, request->io_tag);
+		spin_unlock_irq(&ihost->scic_lock);
+	}
+	list_for_each_entry_safe(request, next_request, &errored_request_list,
+				 completed_node) {
+
+		task = isci_request_access_task(request);
+
+		/* Use sas_task_abort */
+		dev_warn(&ihost->pdev->dev,
+			 "%s: Error - request/task = %p/%p\n",
+			 __func__,
+			 request,
+			 task);
+
+		if (task != NULL) {
+
+			/* Put the task into the abort path if it's not there
+			 * already.
+			 */
+			if (!(task->task_state_flags & SAS_TASK_STATE_ABORTED))
+				sas_task_abort(task);
+
+		} else {
+			/* This is a case where the request has completed with a
+			 * status such that it needed further target servicing,
+			 * but the sas_task reference has already been removed
+			 * from the request.  Since it was errored, it was not
+			 * being aborted, so there is nothing to do except free
+			 * it.
+			 */
+
+			spin_lock_irq(&ihost->scic_lock);
+			/* Remove the request from the remote device's list
+			* of pending requests.
+			*/
+			list_del_init(&request->dev_node);
+			isci_free_tag(ihost, request->io_tag);
+			spin_unlock_irq(&ihost->scic_lock);
+		}
+	}
+
+}
+
+/**
+ * sci_controller_stop() - This method will stop an individual controller
+ *    object.This method will invoke the associated user callback upon
+ *    completion.  The completion callback is called when the following
+ *    conditions are met: -# the method return status is SCI_SUCCESS. -# the
+ *    controller has been quiesced. This method will ensure that all IO
+ *    requests are quiesced, phys are stopped, and all additional operation by
+ *    the hardware is halted.
+ * @controller: the handle to the controller object to stop.
+ * @timeout: This parameter specifies the number of milliseconds in which the
+ *    stop operation should complete.
+ *
+ * The controller must be in the STARTED or STOPPED state. Indicate if the
+ * controller stop method succeeded or failed in some way. SCI_SUCCESS if the
+ * stop operation successfully began. SCI_WARNING_ALREADY_IN_STATE if the
+ * controller is already in the STOPPED state. SCI_FAILURE_INVALID_STATE if the
+ * controller is not either in the STARTED or STOPPED states.
+ */
+static enum sci_status sci_controller_stop(struct isci_host *ihost, u32 timeout)
+{
+	if (ihost->sm.current_state_id != SCIC_READY) {
+		dev_warn(&ihost->pdev->dev,
+			 "SCIC Controller stop operation requested in "
+			 "invalid state\n");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	sci_mod_timer(&ihost->timer, timeout);
+	sci_change_state(&ihost->sm, SCIC_STOPPING);
+	return SCI_SUCCESS;
+}
+
+/**
+ * sci_controller_reset() - This method will reset the supplied core
+ *    controller regardless of the state of said controller.  This operation is
+ *    considered destructive.  In other words, all current operations are wiped
+ *    out.  No IO completions for outstanding devices occur.  Outstanding IO
+ *    requests are not aborted or completed at the actual remote device.
+ * @controller: the handle to the controller object to reset.
+ *
+ * Indicate if the controller reset method succeeded or failed in some way.
+ * SCI_SUCCESS if the reset operation successfully started. SCI_FATAL_ERROR if
+ * the controller reset operation is unable to complete.
+ */
+static enum sci_status sci_controller_reset(struct isci_host *ihost)
+{
+	switch (ihost->sm.current_state_id) {
+	case SCIC_RESET:
+	case SCIC_READY:
+	case SCIC_STOPPED:
+	case SCIC_FAILED:
+		/*
+		 * The reset operation is not a graceful cleanup, just
+		 * perform the state transition.
+		 */
+		sci_change_state(&ihost->sm, SCIC_RESETTING);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(&ihost->pdev->dev,
+			 "SCIC Controller reset operation requested in "
+			 "invalid state\n");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+void isci_host_deinit(struct isci_host *ihost)
+{
+	int i;
+
+	isci_host_change_state(ihost, isci_stopping);
+	for (i = 0; i < SCI_MAX_PORTS; i++) {
+		struct isci_port *iport = &ihost->ports[i];
+		struct isci_remote_device *idev, *d;
+
+		list_for_each_entry_safe(idev, d, &iport->remote_dev_list, node) {
+			if (test_bit(IDEV_ALLOCATED, &idev->flags))
+				isci_remote_device_stop(ihost, idev);
+		}
+	}
+
+	set_bit(IHOST_STOP_PENDING, &ihost->flags);
+
+	spin_lock_irq(&ihost->scic_lock);
+	sci_controller_stop(ihost, SCIC_CONTROLLER_STOP_TIMEOUT);
+	spin_unlock_irq(&ihost->scic_lock);
+
+	wait_for_stop(ihost);
+	sci_controller_reset(ihost);
+
+	/* Cancel any/all outstanding port timers */
+	for (i = 0; i < ihost->logical_port_entries; i++) {
+		struct isci_port *iport = &ihost->ports[i];
+		del_timer_sync(&iport->timer.timer);
+	}
+
+	/* Cancel any/all outstanding phy timers */
+	for (i = 0; i < SCI_MAX_PHYS; i++) {
+		struct isci_phy *iphy = &ihost->phys[i];
+		del_timer_sync(&iphy->sata_timer.timer);
+	}
+
+	del_timer_sync(&ihost->port_agent.timer.timer);
+
+	del_timer_sync(&ihost->power_control.timer.timer);
+
+	del_timer_sync(&ihost->timer.timer);
+
+	del_timer_sync(&ihost->phy_timer.timer);
+}
+
+static void __iomem *scu_base(struct isci_host *isci_host)
+{
+	struct pci_dev *pdev = isci_host->pdev;
+	int id = isci_host->id;
+
+	return pcim_iomap_table(pdev)[SCI_SCU_BAR * 2] + SCI_SCU_BAR_SIZE * id;
+}
+
+static void __iomem *smu_base(struct isci_host *isci_host)
+{
+	struct pci_dev *pdev = isci_host->pdev;
+	int id = isci_host->id;
+
+	return pcim_iomap_table(pdev)[SCI_SMU_BAR * 2] + SCI_SMU_BAR_SIZE * id;
+}
+
+static void isci_user_parameters_get(struct sci_user_parameters *u)
+{
+	int i;
+
+	for (i = 0; i < SCI_MAX_PHYS; i++) {
+		struct sci_phy_user_params *u_phy = &u->phys[i];
+
+		u_phy->max_speed_generation = phy_gen;
+
+		/* we are not exporting these for now */
+		u_phy->align_insertion_frequency = 0x7f;
+		u_phy->in_connection_align_insertion_frequency = 0xff;
+		u_phy->notify_enable_spin_up_insertion_frequency = 0x33;
+	}
+
+	u->stp_inactivity_timeout = stp_inactive_to;
+	u->ssp_inactivity_timeout = ssp_inactive_to;
+	u->stp_max_occupancy_timeout = stp_max_occ_to;
+	u->ssp_max_occupancy_timeout = ssp_max_occ_to;
+	u->no_outbound_task_timeout = no_outbound_task_to;
+	u->max_number_concurrent_device_spin_up = max_concurr_spinup;
+}
+
+static void sci_controller_initial_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_host *ihost = container_of(sm, typeof(*ihost), sm);
+
+	sci_change_state(&ihost->sm, SCIC_RESET);
+}
+
+static inline void sci_controller_starting_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_host *ihost = container_of(sm, typeof(*ihost), sm);
+
+	sci_del_timer(&ihost->timer);
+}
+
+#define INTERRUPT_COALESCE_TIMEOUT_BASE_RANGE_LOWER_BOUND_NS 853
+#define INTERRUPT_COALESCE_TIMEOUT_BASE_RANGE_UPPER_BOUND_NS 1280
+#define INTERRUPT_COALESCE_TIMEOUT_MAX_US                    2700000
+#define INTERRUPT_COALESCE_NUMBER_MAX                        256
+#define INTERRUPT_COALESCE_TIMEOUT_ENCODE_MIN                7
+#define INTERRUPT_COALESCE_TIMEOUT_ENCODE_MAX                28
+
+/**
+ * sci_controller_set_interrupt_coalescence() - This method allows the user to
+ *    configure the interrupt coalescence.
+ * @controller: This parameter represents the handle to the controller object
+ *    for which its interrupt coalesce register is overridden.
+ * @coalesce_number: Used to control the number of entries in the Completion
+ *    Queue before an interrupt is generated. If the number of entries exceed
+ *    this number, an interrupt will be generated. The valid range of the input
+ *    is [0, 256]. A setting of 0 results in coalescing being disabled.
+ * @coalesce_timeout: Timeout value in microseconds. The valid range of the
+ *    input is [0, 2700000] . A setting of 0 is allowed and results in no
+ *    interrupt coalescing timeout.
+ *
+ * Indicate if the user successfully set the interrupt coalesce parameters.
+ * SCI_SUCCESS The user successfully updated the interrutp coalescence.
+ * SCI_FAILURE_INVALID_PARAMETER_VALUE The user input value is out of range.
+ */
+static enum sci_status
+sci_controller_set_interrupt_coalescence(struct isci_host *ihost,
+					 u32 coalesce_number,
+					 u32 coalesce_timeout)
+{
+	u8 timeout_encode = 0;
+	u32 min = 0;
+	u32 max = 0;
+
+	/* Check if the input parameters fall in the range. */
+	if (coalesce_number > INTERRUPT_COALESCE_NUMBER_MAX)
+		return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+	/*
+	 *  Defined encoding for interrupt coalescing timeout:
+	 *              Value   Min      Max     Units
+	 *              -----   ---      ---     -----
+	 *              0       -        -       Disabled
+	 *              1       13.3     20.0    ns
+	 *              2       26.7     40.0
+	 *              3       53.3     80.0
+	 *              4       106.7    160.0
+	 *              5       213.3    320.0
+	 *              6       426.7    640.0
+	 *              7       853.3    1280.0
+	 *              8       1.7      2.6     us
+	 *              9       3.4      5.1
+	 *              10      6.8      10.2
+	 *              11      13.7     20.5
+	 *              12      27.3     41.0
+	 *              13      54.6     81.9
+	 *              14      109.2    163.8
+	 *              15      218.5    327.7
+	 *              16      436.9    655.4
+	 *              17      873.8    1310.7
+	 *              18      1.7      2.6     ms
+	 *              19      3.5      5.2
+	 *              20      7.0      10.5
+	 *              21      14.0     21.0
+	 *              22      28.0     41.9
+	 *              23      55.9     83.9
+	 *              24      111.8    167.8
+	 *              25      223.7    335.5
+	 *              26      447.4    671.1
+	 *              27      894.8    1342.2
+	 *              28      1.8      2.7     s
+	 *              Others Undefined */
+
+	/*
+	 * Use the table above to decide the encode of interrupt coalescing timeout
+	 * value for register writing. */
+	if (coalesce_timeout == 0)
+		timeout_encode = 0;
+	else{
+		/* make the timeout value in unit of (10 ns). */
+		coalesce_timeout = coalesce_timeout * 100;
+		min = INTERRUPT_COALESCE_TIMEOUT_BASE_RANGE_LOWER_BOUND_NS / 10;
+		max = INTERRUPT_COALESCE_TIMEOUT_BASE_RANGE_UPPER_BOUND_NS / 10;
+
+		/* get the encode of timeout for register writing. */
+		for (timeout_encode = INTERRUPT_COALESCE_TIMEOUT_ENCODE_MIN;
+		      timeout_encode <= INTERRUPT_COALESCE_TIMEOUT_ENCODE_MAX;
+		      timeout_encode++) {
+			if (min <= coalesce_timeout &&  max > coalesce_timeout)
+				break;
+			else if (coalesce_timeout >= max && coalesce_timeout < min * 2
+				 && coalesce_timeout <= INTERRUPT_COALESCE_TIMEOUT_MAX_US * 100) {
+				if ((coalesce_timeout - max) < (2 * min - coalesce_timeout))
+					break;
+				else{
+					timeout_encode++;
+					break;
+				}
+			} else {
+				max = max * 2;
+				min = min * 2;
+			}
+		}
+
+		if (timeout_encode == INTERRUPT_COALESCE_TIMEOUT_ENCODE_MAX + 1)
+			/* the value is out of range. */
+			return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+	}
+
+	writel(SMU_ICC_GEN_VAL(NUMBER, coalesce_number) |
+	       SMU_ICC_GEN_VAL(TIMER, timeout_encode),
+	       &ihost->smu_registers->interrupt_coalesce_control);
+
+
+	ihost->interrupt_coalesce_number = (u16)coalesce_number;
+	ihost->interrupt_coalesce_timeout = coalesce_timeout / 100;
+
+	return SCI_SUCCESS;
+}
+
+
+static void sci_controller_ready_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_host *ihost = container_of(sm, typeof(*ihost), sm);
+
+	/* set the default interrupt coalescence number and timeout value. */
+	sci_controller_set_interrupt_coalescence(ihost, 0x10, 250);
+}
+
+static void sci_controller_ready_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_host *ihost = container_of(sm, typeof(*ihost), sm);
+
+	/* disable interrupt coalescence. */
+	sci_controller_set_interrupt_coalescence(ihost, 0, 0);
+}
+
+static enum sci_status sci_controller_stop_phys(struct isci_host *ihost)
+{
+	u32 index;
+	enum sci_status status;
+	enum sci_status phy_status;
+
+	status = SCI_SUCCESS;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		phy_status = sci_phy_stop(&ihost->phys[index]);
+
+		if (phy_status != SCI_SUCCESS &&
+		    phy_status != SCI_FAILURE_INVALID_STATE) {
+			status = SCI_FAILURE;
+
+			dev_warn(&ihost->pdev->dev,
+				 "%s: Controller stop operation failed to stop "
+				 "phy %d because of status %d.\n",
+				 __func__,
+				 ihost->phys[index].phy_index, phy_status);
+		}
+	}
+
+	return status;
+}
+
+static enum sci_status sci_controller_stop_ports(struct isci_host *ihost)
+{
+	u32 index;
+	enum sci_status port_status;
+	enum sci_status status = SCI_SUCCESS;
+
+	for (index = 0; index < ihost->logical_port_entries; index++) {
+		struct isci_port *iport = &ihost->ports[index];
+
+		port_status = sci_port_stop(iport);
+
+		if ((port_status != SCI_SUCCESS) &&
+		    (port_status != SCI_FAILURE_INVALID_STATE)) {
+			status = SCI_FAILURE;
+
+			dev_warn(&ihost->pdev->dev,
+				 "%s: Controller stop operation failed to "
+				 "stop port %d because of status %d.\n",
+				 __func__,
+				 iport->logical_port_index,
+				 port_status);
+		}
+	}
+
+	return status;
+}
+
+static enum sci_status sci_controller_stop_devices(struct isci_host *ihost)
+{
+	u32 index;
+	enum sci_status status;
+	enum sci_status device_status;
+
+	status = SCI_SUCCESS;
+
+	for (index = 0; index < ihost->remote_node_entries; index++) {
+		if (ihost->device_table[index] != NULL) {
+			/* / @todo What timeout value do we want to provide to this request? */
+			device_status = sci_remote_device_stop(ihost->device_table[index], 0);
+
+			if ((device_status != SCI_SUCCESS) &&
+			    (device_status != SCI_FAILURE_INVALID_STATE)) {
+				dev_warn(&ihost->pdev->dev,
+					 "%s: Controller stop operation failed "
+					 "to stop device 0x%p because of "
+					 "status %d.\n",
+					 __func__,
+					 ihost->device_table[index], device_status);
+			}
+		}
+	}
+
+	return status;
+}
+
+static void sci_controller_stopping_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_host *ihost = container_of(sm, typeof(*ihost), sm);
+
+	/* Stop all of the components for this controller */
+	sci_controller_stop_phys(ihost);
+	sci_controller_stop_ports(ihost);
+	sci_controller_stop_devices(ihost);
+}
+
+static void sci_controller_stopping_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_host *ihost = container_of(sm, typeof(*ihost), sm);
+
+	sci_del_timer(&ihost->timer);
+}
+
+static void sci_controller_reset_hardware(struct isci_host *ihost)
+{
+	/* Disable interrupts so we dont take any spurious interrupts */
+	sci_controller_disable_interrupts(ihost);
+
+	/* Reset the SCU */
+	writel(0xFFFFFFFF, &ihost->smu_registers->soft_reset_control);
+
+	/* Delay for 1ms to before clearing the CQP and UFQPR. */
+	udelay(1000);
+
+	/* The write to the CQGR clears the CQP */
+	writel(0x00000000, &ihost->smu_registers->completion_queue_get);
+
+	/* The write to the UFQGP clears the UFQPR */
+	writel(0, &ihost->scu_registers->sdma.unsolicited_frame_get_pointer);
+}
+
+static void sci_controller_resetting_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_host *ihost = container_of(sm, typeof(*ihost), sm);
+
+	sci_controller_reset_hardware(ihost);
+	sci_change_state(&ihost->sm, SCIC_RESET);
+}
+
+static const struct sci_base_state sci_controller_state_table[] = {
+	[SCIC_INITIAL] = {
+		.enter_state = sci_controller_initial_state_enter,
+	},
+	[SCIC_RESET] = {},
+	[SCIC_INITIALIZING] = {},
+	[SCIC_INITIALIZED] = {},
+	[SCIC_STARTING] = {
+		.exit_state  = sci_controller_starting_state_exit,
+	},
+	[SCIC_READY] = {
+		.enter_state = sci_controller_ready_state_enter,
+		.exit_state  = sci_controller_ready_state_exit,
+	},
+	[SCIC_RESETTING] = {
+		.enter_state = sci_controller_resetting_state_enter,
+	},
+	[SCIC_STOPPING] = {
+		.enter_state = sci_controller_stopping_state_enter,
+		.exit_state = sci_controller_stopping_state_exit,
+	},
+	[SCIC_STOPPED] = {},
+	[SCIC_FAILED] = {}
+};
+
+static void sci_controller_set_default_config_parameters(struct isci_host *ihost)
+{
+	/* these defaults are overridden by the platform / firmware */
+	u16 index;
+
+	/* Default to APC mode. */
+	ihost->oem_parameters.controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE;
+
+	/* Default to APC mode. */
+	ihost->oem_parameters.controller.max_concurrent_dev_spin_up = 1;
+
+	/* Default to no SSC operation. */
+	ihost->oem_parameters.controller.do_enable_ssc = false;
+
+	/* Initialize all of the port parameter information to narrow ports. */
+	for (index = 0; index < SCI_MAX_PORTS; index++) {
+		ihost->oem_parameters.ports[index].phy_mask = 0;
+	}
+
+	/* Initialize all of the phy parameter information. */
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		/* Default to 6G (i.e. Gen 3) for now. */
+		ihost->user_parameters.phys[index].max_speed_generation = 3;
+
+		/* the frequencies cannot be 0 */
+		ihost->user_parameters.phys[index].align_insertion_frequency = 0x7f;
+		ihost->user_parameters.phys[index].in_connection_align_insertion_frequency = 0xff;
+		ihost->user_parameters.phys[index].notify_enable_spin_up_insertion_frequency = 0x33;
+
+		/*
+		 * Previous Vitesse based expanders had a arbitration issue that
+		 * is worked around by having the upper 32-bits of SAS address
+		 * with a value greater then the Vitesse company identifier.
+		 * Hence, usage of 0x5FCFFFFF. */
+		ihost->oem_parameters.phys[index].sas_address.low = 0x1 + ihost->id;
+		ihost->oem_parameters.phys[index].sas_address.high = 0x5FCFFFFF;
+	}
+
+	ihost->user_parameters.stp_inactivity_timeout = 5;
+	ihost->user_parameters.ssp_inactivity_timeout = 5;
+	ihost->user_parameters.stp_max_occupancy_timeout = 5;
+	ihost->user_parameters.ssp_max_occupancy_timeout = 20;
+	ihost->user_parameters.no_outbound_task_timeout = 20;
+}
+
+static void controller_timeout(unsigned long data)
+{
+	struct sci_timer *tmr = (struct sci_timer *)data;
+	struct isci_host *ihost = container_of(tmr, typeof(*ihost), timer);
+	struct sci_base_state_machine *sm = &ihost->sm;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	if (tmr->cancel)
+		goto done;
+
+	if (sm->current_state_id == SCIC_STARTING)
+		sci_controller_transition_to_ready(ihost, SCI_FAILURE_TIMEOUT);
+	else if (sm->current_state_id == SCIC_STOPPING) {
+		sci_change_state(sm, SCIC_FAILED);
+		isci_host_stop_complete(ihost, SCI_FAILURE_TIMEOUT);
+	} else	/* / @todo Now what do we want to do in this case? */
+		dev_err(&ihost->pdev->dev,
+			"%s: Controller timer fired when controller was not "
+			"in a state being timed.\n",
+			__func__);
+
+done:
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
+
+static enum sci_status sci_controller_construct(struct isci_host *ihost,
+						void __iomem *scu_base,
+						void __iomem *smu_base)
+{
+	u8 i;
+
+	sci_init_sm(&ihost->sm, sci_controller_state_table, SCIC_INITIAL);
+
+	ihost->scu_registers = scu_base;
+	ihost->smu_registers = smu_base;
+
+	sci_port_configuration_agent_construct(&ihost->port_agent);
+
+	/* Construct the ports for this controller */
+	for (i = 0; i < SCI_MAX_PORTS; i++)
+		sci_port_construct(&ihost->ports[i], i, ihost);
+	sci_port_construct(&ihost->ports[i], SCIC_SDS_DUMMY_PORT, ihost);
+
+	/* Construct the phys for this controller */
+	for (i = 0; i < SCI_MAX_PHYS; i++) {
+		/* Add all the PHYs to the dummy port */
+		sci_phy_construct(&ihost->phys[i],
+				  &ihost->ports[SCI_MAX_PORTS], i);
+	}
+
+	ihost->invalid_phy_mask = 0;
+
+	sci_init_timer(&ihost->timer, controller_timeout);
+
+	/* Initialize the User and OEM parameters to default values. */
+	sci_controller_set_default_config_parameters(ihost);
+
+	return sci_controller_reset(ihost);
+}
+
+int sci_oem_parameters_validate(struct sci_oem_params *oem)
+{
+	int i;
+
+	for (i = 0; i < SCI_MAX_PORTS; i++)
+		if (oem->ports[i].phy_mask > SCIC_SDS_PARM_PHY_MASK_MAX)
+			return -EINVAL;
+
+	for (i = 0; i < SCI_MAX_PHYS; i++)
+		if (oem->phys[i].sas_address.high == 0 &&
+		    oem->phys[i].sas_address.low == 0)
+			return -EINVAL;
+
+	if (oem->controller.mode_type == SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE) {
+		for (i = 0; i < SCI_MAX_PHYS; i++)
+			if (oem->ports[i].phy_mask != 0)
+				return -EINVAL;
+	} else if (oem->controller.mode_type == SCIC_PORT_MANUAL_CONFIGURATION_MODE) {
+		u8 phy_mask = 0;
+
+		for (i = 0; i < SCI_MAX_PHYS; i++)
+			phy_mask |= oem->ports[i].phy_mask;
+
+		if (phy_mask == 0)
+			return -EINVAL;
+	} else
+		return -EINVAL;
+
+	if (oem->controller.max_concurrent_dev_spin_up > MAX_CONCURRENT_DEVICE_SPIN_UP_COUNT)
+		return -EINVAL;
+
+	return 0;
+}
+
+static enum sci_status sci_oem_parameters_set(struct isci_host *ihost)
+{
+	u32 state = ihost->sm.current_state_id;
+
+	if (state == SCIC_RESET ||
+	    state == SCIC_INITIALIZING ||
+	    state == SCIC_INITIALIZED) {
+
+		if (sci_oem_parameters_validate(&ihost->oem_parameters))
+			return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+		return SCI_SUCCESS;
+	}
+
+	return SCI_FAILURE_INVALID_STATE;
+}
+
+static void power_control_timeout(unsigned long data)
+{
+	struct sci_timer *tmr = (struct sci_timer *)data;
+	struct isci_host *ihost = container_of(tmr, typeof(*ihost), power_control.timer);
+	struct isci_phy *iphy;
+	unsigned long flags;
+	u8 i;
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	if (tmr->cancel)
+		goto done;
+
+	ihost->power_control.phys_granted_power = 0;
+
+	if (ihost->power_control.phys_waiting == 0) {
+		ihost->power_control.timer_started = false;
+		goto done;
+	}
+
+	for (i = 0; i < SCI_MAX_PHYS; i++) {
+
+		if (ihost->power_control.phys_waiting == 0)
+			break;
+
+		iphy = ihost->power_control.requesters[i];
+		if (iphy == NULL)
+			continue;
+
+		if (ihost->power_control.phys_granted_power >=
+		    ihost->oem_parameters.controller.max_concurrent_dev_spin_up)
+			break;
+
+		ihost->power_control.requesters[i] = NULL;
+		ihost->power_control.phys_waiting--;
+		ihost->power_control.phys_granted_power++;
+		sci_phy_consume_power_handler(iphy);
+	}
+
+	/*
+	 * It doesn't matter if the power list is empty, we need to start the
+	 * timer in case another phy becomes ready.
+	 */
+	sci_mod_timer(tmr, SCIC_SDS_CONTROLLER_POWER_CONTROL_INTERVAL);
+	ihost->power_control.timer_started = true;
+
+done:
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
+
+void sci_controller_power_control_queue_insert(struct isci_host *ihost,
+					       struct isci_phy *iphy)
+{
+	BUG_ON(iphy == NULL);
+
+	if (ihost->power_control.phys_granted_power <
+	    ihost->oem_parameters.controller.max_concurrent_dev_spin_up) {
+		ihost->power_control.phys_granted_power++;
+		sci_phy_consume_power_handler(iphy);
+
+		/*
+		 * stop and start the power_control timer. When the timer fires, the
+		 * no_of_phys_granted_power will be set to 0
+		 */
+		if (ihost->power_control.timer_started)
+			sci_del_timer(&ihost->power_control.timer);
+
+		sci_mod_timer(&ihost->power_control.timer,
+				 SCIC_SDS_CONTROLLER_POWER_CONTROL_INTERVAL);
+		ihost->power_control.timer_started = true;
+
+	} else {
+		/* Add the phy in the waiting list */
+		ihost->power_control.requesters[iphy->phy_index] = iphy;
+		ihost->power_control.phys_waiting++;
+	}
+}
+
+void sci_controller_power_control_queue_remove(struct isci_host *ihost,
+					       struct isci_phy *iphy)
+{
+	BUG_ON(iphy == NULL);
+
+	if (ihost->power_control.requesters[iphy->phy_index])
+		ihost->power_control.phys_waiting--;
+
+	ihost->power_control.requesters[iphy->phy_index] = NULL;
+}
+
+#define AFE_REGISTER_WRITE_DELAY 10
+
+/* Initialize the AFE for this phy index. We need to read the AFE setup from
+ * the OEM parameters
+ */
+static void sci_controller_afe_initialization(struct isci_host *ihost)
+{
+	const struct sci_oem_params *oem = &ihost->oem_parameters;
+	struct pci_dev *pdev = ihost->pdev;
+	u32 afe_status;
+	u32 phy_id;
+
+	/* Clear DFX Status registers */
+	writel(0x0081000f, &ihost->scu_registers->afe.afe_dfx_master_control0);
+	udelay(AFE_REGISTER_WRITE_DELAY);
+
+	if (is_b0(pdev)) {
+		/* PM Rx Equalization Save, PM SPhy Rx Acknowledgement
+		 * Timer, PM Stagger Timer */
+		writel(0x0007BFFF, &ihost->scu_registers->afe.afe_pmsn_master_control2);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+	}
+
+	/* Configure bias currents to normal */
+	if (is_a2(pdev))
+		writel(0x00005A00, &ihost->scu_registers->afe.afe_bias_control);
+	else if (is_b0(pdev) || is_c0(pdev))
+		writel(0x00005F00, &ihost->scu_registers->afe.afe_bias_control);
+
+	udelay(AFE_REGISTER_WRITE_DELAY);
+
+	/* Enable PLL */
+	if (is_b0(pdev) || is_c0(pdev))
+		writel(0x80040A08, &ihost->scu_registers->afe.afe_pll_control0);
+	else
+		writel(0x80040908, &ihost->scu_registers->afe.afe_pll_control0);
+
+	udelay(AFE_REGISTER_WRITE_DELAY);
+
+	/* Wait for the PLL to lock */
+	do {
+		afe_status = readl(&ihost->scu_registers->afe.afe_common_block_status);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+	} while ((afe_status & 0x00001000) == 0);
+
+	if (is_a2(pdev)) {
+		/* Shorten SAS SNW lock time (RxLock timer value from 76 us to 50 us) */
+		writel(0x7bcc96ad, &ihost->scu_registers->afe.afe_pmsn_master_control0);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+	}
+
+	for (phy_id = 0; phy_id < SCI_MAX_PHYS; phy_id++) {
+		const struct sci_phy_oem_params *oem_phy = &oem->phys[phy_id];
+
+		if (is_b0(pdev)) {
+			 /* Configure transmitter SSC parameters */
+			writel(0x00030000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_ssc_control);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+		} else if (is_c0(pdev)) {
+			 /* Configure transmitter SSC parameters */
+			writel(0x0003000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_ssc_control);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			/*
+			 * All defaults, except the Receive Word Alignament/Comma Detect
+			 * Enable....(0xe800) */
+			writel(0x00004500, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control0);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+		} else {
+			/*
+			 * All defaults, except the Receive Word Alignament/Comma Detect
+			 * Enable....(0xe800) */
+			writel(0x00004512, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control0);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			writel(0x0050100F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control1);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+		}
+
+		/*
+		 * Power up TX and RX out from power down (PWRDNTX and PWRDNRX)
+		 * & increase TX int & ext bias 20%....(0xe85c) */
+		if (is_a2(pdev))
+			writel(0x000003F0, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control);
+		else if (is_b0(pdev)) {
+			 /* Power down TX and RX (PWRDNTX and PWRDNRX) */
+			writel(0x000003D7, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			/*
+			 * Power up TX and RX out from power down (PWRDNTX and PWRDNRX)
+			 * & increase TX int & ext bias 20%....(0xe85c) */
+			writel(0x000003D4, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control);
+		} else {
+			writel(0x000001E7, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			/*
+			 * Power up TX and RX out from power down (PWRDNTX and PWRDNRX)
+			 * & increase TX int & ext bias 20%....(0xe85c) */
+			writel(0x000001E4, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control);
+		}
+		udelay(AFE_REGISTER_WRITE_DELAY);
+
+		if (is_a2(pdev)) {
+			/* Enable TX equalization (0xe824) */
+			writel(0x00040000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_control);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+		}
+
+		/*
+		 * RDPI=0x0(RX Power On), RXOOBDETPDNC=0x0, TPD=0x0(TX Power On),
+		 * RDD=0x0(RX Detect Enabled) ....(0xe800) */
+		writel(0x00004100, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control0);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+
+		/* Leave DFE/FFE on */
+		if (is_a2(pdev))
+			writel(0x3F11103F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control0);
+		else if (is_b0(pdev)) {
+			writel(0x3F11103F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control0);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+			/* Enable TX equalization (0xe824) */
+			writel(0x00040000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_control);
+		} else {
+			writel(0x0140DF0F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control1);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			writel(0x3F6F103F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control0);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			/* Enable TX equalization (0xe824) */
+			writel(0x00040000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_control);
+		}
+
+		udelay(AFE_REGISTER_WRITE_DELAY);
+
+		writel(oem_phy->afe_tx_amp_control0,
+			&ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control0);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+
+		writel(oem_phy->afe_tx_amp_control1,
+			&ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control1);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+
+		writel(oem_phy->afe_tx_amp_control2,
+			&ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control2);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+
+		writel(oem_phy->afe_tx_amp_control3,
+			&ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control3);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+	}
+
+	/* Transfer control to the PEs */
+	writel(0x00010f00, &ihost->scu_registers->afe.afe_dfx_master_control0);
+	udelay(AFE_REGISTER_WRITE_DELAY);
+}
+
+static void sci_controller_initialize_power_control(struct isci_host *ihost)
+{
+	sci_init_timer(&ihost->power_control.timer, power_control_timeout);
+
+	memset(ihost->power_control.requesters, 0,
+	       sizeof(ihost->power_control.requesters));
+
+	ihost->power_control.phys_waiting = 0;
+	ihost->power_control.phys_granted_power = 0;
+}
+
+static enum sci_status sci_controller_initialize(struct isci_host *ihost)
+{
+	struct sci_base_state_machine *sm = &ihost->sm;
+	enum sci_status result = SCI_FAILURE;
+	unsigned long i, state, val;
+
+	if (ihost->sm.current_state_id != SCIC_RESET) {
+		dev_warn(&ihost->pdev->dev,
+			 "SCIC Controller initialize operation requested "
+			 "in invalid state\n");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	sci_change_state(sm, SCIC_INITIALIZING);
+
+	sci_init_timer(&ihost->phy_timer, phy_startup_timeout);
+
+	ihost->next_phy_to_start = 0;
+	ihost->phy_startup_timer_pending = false;
+
+	sci_controller_initialize_power_control(ihost);
+
+	/*
+	 * There is nothing to do here for B0 since we do not have to
+	 * program the AFE registers.
+	 * / @todo The AFE settings are supposed to be correct for the B0 but
+	 * /       presently they seem to be wrong. */
+	sci_controller_afe_initialization(ihost);
+
+
+	/* Take the hardware out of reset */
+	writel(0, &ihost->smu_registers->soft_reset_control);
+
+	/*
+	 * / @todo Provide meaningfull error code for hardware failure
+	 * result = SCI_FAILURE_CONTROLLER_HARDWARE; */
+	for (i = 100; i >= 1; i--) {
+		u32 status;
+
+		/* Loop until the hardware reports success */
+		udelay(SCU_CONTEXT_RAM_INIT_STALL_TIME);
+		status = readl(&ihost->smu_registers->control_status);
+
+		if ((status & SCU_RAM_INIT_COMPLETED) == SCU_RAM_INIT_COMPLETED)
+			break;
+	}
+	if (i == 0)
+		goto out;
+
+	/*
+	 * Determine what are the actaul device capacities that the
+	 * hardware will support */
+	val = readl(&ihost->smu_registers->device_context_capacity);
+
+	/* Record the smaller of the two capacity values */
+	ihost->logical_port_entries = min(smu_max_ports(val), SCI_MAX_PORTS);
+	ihost->task_context_entries = min(smu_max_task_contexts(val), SCI_MAX_IO_REQUESTS);
+	ihost->remote_node_entries = min(smu_max_rncs(val), SCI_MAX_REMOTE_DEVICES);
+
+	/*
+	 * Make all PEs that are unassigned match up with the
+	 * logical ports
+	 */
+	for (i = 0; i < ihost->logical_port_entries; i++) {
+		struct scu_port_task_scheduler_group_registers __iomem
+			*ptsg = &ihost->scu_registers->peg0.ptsg;
+
+		writel(i, &ptsg->protocol_engine[i]);
+	}
+
+	/* Initialize hardware PCI Relaxed ordering in DMA engines */
+	val = readl(&ihost->scu_registers->sdma.pdma_configuration);
+	val |= SCU_PDMACR_GEN_BIT(PCI_RELAXED_ORDERING_ENABLE);
+	writel(val, &ihost->scu_registers->sdma.pdma_configuration);
+
+	val = readl(&ihost->scu_registers->sdma.cdma_configuration);
+	val |= SCU_CDMACR_GEN_BIT(PCI_RELAXED_ORDERING_ENABLE);
+	writel(val, &ihost->scu_registers->sdma.cdma_configuration);
+
+	/*
+	 * Initialize the PHYs before the PORTs because the PHY registers
+	 * are accessed during the port initialization.
+	 */
+	for (i = 0; i < SCI_MAX_PHYS; i++) {
+		result = sci_phy_initialize(&ihost->phys[i],
+					    &ihost->scu_registers->peg0.pe[i].tl,
+					    &ihost->scu_registers->peg0.pe[i].ll);
+		if (result != SCI_SUCCESS)
+			goto out;
+	}
+
+	for (i = 0; i < ihost->logical_port_entries; i++) {
+		struct isci_port *iport = &ihost->ports[i];
+
+		iport->port_task_scheduler_registers = &ihost->scu_registers->peg0.ptsg.port[i];
+		iport->port_pe_configuration_register = &ihost->scu_registers->peg0.ptsg.protocol_engine[0];
+		iport->viit_registers = &ihost->scu_registers->peg0.viit[i];
+	}
+
+	result = sci_port_configuration_agent_initialize(ihost, &ihost->port_agent);
+
+ out:
+	/* Advance the controller state machine */
+	if (result == SCI_SUCCESS)
+		state = SCIC_INITIALIZED;
+	else
+		state = SCIC_FAILED;
+	sci_change_state(sm, state);
+
+	return result;
+}
+
+static enum sci_status sci_user_parameters_set(struct isci_host *ihost,
+					       struct sci_user_parameters *sci_parms)
+{
+	u32 state = ihost->sm.current_state_id;
+
+	if (state == SCIC_RESET ||
+	    state == SCIC_INITIALIZING ||
+	    state == SCIC_INITIALIZED) {
+		u16 index;
+
+		/*
+		 * Validate the user parameters.  If they are not legal, then
+		 * return a failure.
+		 */
+		for (index = 0; index < SCI_MAX_PHYS; index++) {
+			struct sci_phy_user_params *user_phy;
+
+			user_phy = &sci_parms->phys[index];
+
+			if (!((user_phy->max_speed_generation <=
+						SCIC_SDS_PARM_MAX_SPEED) &&
+			      (user_phy->max_speed_generation >
+						SCIC_SDS_PARM_NO_SPEED)))
+				return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+			if (user_phy->in_connection_align_insertion_frequency <
+					3)
+				return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+			if ((user_phy->in_connection_align_insertion_frequency <
+						3) ||
+			    (user_phy->align_insertion_frequency == 0) ||
+			    (user_phy->
+				notify_enable_spin_up_insertion_frequency ==
+						0))
+				return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+		}
+
+		if ((sci_parms->stp_inactivity_timeout == 0) ||
+		    (sci_parms->ssp_inactivity_timeout == 0) ||
+		    (sci_parms->stp_max_occupancy_timeout == 0) ||
+		    (sci_parms->ssp_max_occupancy_timeout == 0) ||
+		    (sci_parms->no_outbound_task_timeout == 0))
+			return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+		memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms));
+
+		return SCI_SUCCESS;
+	}
+
+	return SCI_FAILURE_INVALID_STATE;
+}
+
+static int sci_controller_mem_init(struct isci_host *ihost)
+{
+	struct device *dev = &ihost->pdev->dev;
+	dma_addr_t dma;
+	size_t size;
+	int err;
+
+	size = SCU_MAX_COMPLETION_QUEUE_ENTRIES * sizeof(u32);
+	ihost->completion_queue = dmam_alloc_coherent(dev, size, &dma, GFP_KERNEL);
+	if (!ihost->completion_queue)
+		return -ENOMEM;
+
+	writel(lower_32_bits(dma), &ihost->smu_registers->completion_queue_lower);
+	writel(upper_32_bits(dma), &ihost->smu_registers->completion_queue_upper);
+
+	size = ihost->remote_node_entries * sizeof(union scu_remote_node_context);
+	ihost->remote_node_context_table = dmam_alloc_coherent(dev, size, &dma,
+							       GFP_KERNEL);
+	if (!ihost->remote_node_context_table)
+		return -ENOMEM;
+
+	writel(lower_32_bits(dma), &ihost->smu_registers->remote_node_context_lower);
+	writel(upper_32_bits(dma), &ihost->smu_registers->remote_node_context_upper);
+
+	size = ihost->task_context_entries * sizeof(struct scu_task_context),
+	ihost->task_context_table = dmam_alloc_coherent(dev, size, &dma, GFP_KERNEL);
+	if (!ihost->task_context_table)
+		return -ENOMEM;
+
+	ihost->task_context_dma = dma;
+	writel(lower_32_bits(dma), &ihost->smu_registers->host_task_table_lower);
+	writel(upper_32_bits(dma), &ihost->smu_registers->host_task_table_upper);
+
+	err = sci_unsolicited_frame_control_construct(ihost);
+	if (err)
+		return err;
+
+	/*
+	 * Inform the silicon as to the location of the UF headers and
+	 * address table.
+	 */
+	writel(lower_32_bits(ihost->uf_control.headers.physical_address),
+		&ihost->scu_registers->sdma.uf_header_base_address_lower);
+	writel(upper_32_bits(ihost->uf_control.headers.physical_address),
+		&ihost->scu_registers->sdma.uf_header_base_address_upper);
+
+	writel(lower_32_bits(ihost->uf_control.address_table.physical_address),
+		&ihost->scu_registers->sdma.uf_address_table_lower);
+	writel(upper_32_bits(ihost->uf_control.address_table.physical_address),
+		&ihost->scu_registers->sdma.uf_address_table_upper);
+
+	return 0;
+}
+
+int isci_host_init(struct isci_host *ihost)
+{
+	int err = 0, i;
+	enum sci_status status;
+	struct sci_user_parameters sci_user_params;
+	struct isci_pci_info *pci_info = to_pci_info(ihost->pdev);
+
+	spin_lock_init(&ihost->state_lock);
+	spin_lock_init(&ihost->scic_lock);
+	init_waitqueue_head(&ihost->eventq);
+
+	isci_host_change_state(ihost, isci_starting);
+
+	status = sci_controller_construct(ihost, scu_base(ihost),
+					  smu_base(ihost));
+
+	if (status != SCI_SUCCESS) {
+		dev_err(&ihost->pdev->dev,
+			"%s: sci_controller_construct failed - status = %x\n",
+			__func__,
+			status);
+		return -ENODEV;
+	}
+
+	ihost->sas_ha.dev = &ihost->pdev->dev;
+	ihost->sas_ha.lldd_ha = ihost;
+
+	/*
+	 * grab initial values stored in the controller object for OEM and USER
+	 * parameters
+	 */
+	isci_user_parameters_get(&sci_user_params);
+	status = sci_user_parameters_set(ihost, &sci_user_params);
+	if (status != SCI_SUCCESS) {
+		dev_warn(&ihost->pdev->dev,
+			 "%s: sci_user_parameters_set failed\n",
+			 __func__);
+		return -ENODEV;
+	}
+
+	/* grab any OEM parameters specified in orom */
+	if (pci_info->orom) {
+		status = isci_parse_oem_parameters(&ihost->oem_parameters,
+						   pci_info->orom,
+						   ihost->id);
+		if (status != SCI_SUCCESS) {
+			dev_warn(&ihost->pdev->dev,
+				 "parsing firmware oem parameters failed\n");
+			return -EINVAL;
+		}
+	}
+
+	status = sci_oem_parameters_set(ihost);
+	if (status != SCI_SUCCESS) {
+		dev_warn(&ihost->pdev->dev,
+				"%s: sci_oem_parameters_set failed\n",
+				__func__);
+		return -ENODEV;
+	}
+
+	tasklet_init(&ihost->completion_tasklet,
+		     isci_host_completion_routine, (unsigned long)ihost);
+
+	INIT_LIST_HEAD(&ihost->requests_to_complete);
+	INIT_LIST_HEAD(&ihost->requests_to_errorback);
+
+	spin_lock_irq(&ihost->scic_lock);
+	status = sci_controller_initialize(ihost);
+	spin_unlock_irq(&ihost->scic_lock);
+	if (status != SCI_SUCCESS) {
+		dev_warn(&ihost->pdev->dev,
+			 "%s: sci_controller_initialize failed -"
+			 " status = 0x%x\n",
+			 __func__, status);
+		return -ENODEV;
+	}
+
+	err = sci_controller_mem_init(ihost);
+	if (err)
+		return err;
+
+	for (i = 0; i < SCI_MAX_PORTS; i++)
+		isci_port_init(&ihost->ports[i], ihost, i);
+
+	for (i = 0; i < SCI_MAX_PHYS; i++)
+		isci_phy_init(&ihost->phys[i], ihost, i);
+
+	for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) {
+		struct isci_remote_device *idev = &ihost->devices[i];
+
+		INIT_LIST_HEAD(&idev->reqs_in_process);
+		INIT_LIST_HEAD(&idev->node);
+	}
+
+	for (i = 0; i < SCI_MAX_IO_REQUESTS; i++) {
+		struct isci_request *ireq;
+		dma_addr_t dma;
+
+		ireq = dmam_alloc_coherent(&ihost->pdev->dev,
+					   sizeof(struct isci_request), &dma,
+					   GFP_KERNEL);
+		if (!ireq)
+			return -ENOMEM;
+
+		ireq->tc = &ihost->task_context_table[i];
+		ireq->owning_controller = ihost;
+		spin_lock_init(&ireq->state_lock);
+		ireq->request_daddr = dma;
+		ireq->isci_host = ihost;
+		ihost->reqs[i] = ireq;
+	}
+
+	return 0;
+}
+
+void sci_controller_link_up(struct isci_host *ihost, struct isci_port *iport,
+			    struct isci_phy *iphy)
+{
+	switch (ihost->sm.current_state_id) {
+	case SCIC_STARTING:
+		sci_del_timer(&ihost->phy_timer);
+		ihost->phy_startup_timer_pending = false;
+		ihost->port_agent.link_up_handler(ihost, &ihost->port_agent,
+						  iport, iphy);
+		sci_controller_start_next_phy(ihost);
+		break;
+	case SCIC_READY:
+		ihost->port_agent.link_up_handler(ihost, &ihost->port_agent,
+						  iport, iphy);
+		break;
+	default:
+		dev_dbg(&ihost->pdev->dev,
+			"%s: SCIC Controller linkup event from phy %d in "
+			"unexpected state %d\n", __func__, iphy->phy_index,
+			ihost->sm.current_state_id);
+	}
+}
+
+void sci_controller_link_down(struct isci_host *ihost, struct isci_port *iport,
+			      struct isci_phy *iphy)
+{
+	switch (ihost->sm.current_state_id) {
+	case SCIC_STARTING:
+	case SCIC_READY:
+		ihost->port_agent.link_down_handler(ihost, &ihost->port_agent,
+						   iport, iphy);
+		break;
+	default:
+		dev_dbg(&ihost->pdev->dev,
+			"%s: SCIC Controller linkdown event from phy %d in "
+			"unexpected state %d\n",
+			__func__,
+			iphy->phy_index,
+			ihost->sm.current_state_id);
+	}
+}
+
+static bool sci_controller_has_remote_devices_stopping(struct isci_host *ihost)
+{
+	u32 index;
+
+	for (index = 0; index < ihost->remote_node_entries; index++) {
+		if ((ihost->device_table[index] != NULL) &&
+		   (ihost->device_table[index]->sm.current_state_id == SCI_DEV_STOPPING))
+			return true;
+	}
+
+	return false;
+}
+
+void sci_controller_remote_device_stopped(struct isci_host *ihost,
+					  struct isci_remote_device *idev)
+{
+	if (ihost->sm.current_state_id != SCIC_STOPPING) {
+		dev_dbg(&ihost->pdev->dev,
+			"SCIC Controller 0x%p remote device stopped event "
+			"from device 0x%p in unexpected state %d\n",
+			ihost, idev,
+			ihost->sm.current_state_id);
+		return;
+	}
+
+	if (!sci_controller_has_remote_devices_stopping(ihost))
+		sci_change_state(&ihost->sm, SCIC_STOPPED);
+}
+
+void sci_controller_post_request(struct isci_host *ihost, u32 request)
+{
+	dev_dbg(&ihost->pdev->dev, "%s[%d]: %#x\n",
+		__func__, ihost->id, request);
+
+	writel(request, &ihost->smu_registers->post_context_port);
+}
+
+struct isci_request *sci_request_by_tag(struct isci_host *ihost, u16 io_tag)
+{
+	u16 task_index;
+	u16 task_sequence;
+
+	task_index = ISCI_TAG_TCI(io_tag);
+
+	if (task_index < ihost->task_context_entries) {
+		struct isci_request *ireq = ihost->reqs[task_index];
+
+		if (test_bit(IREQ_ACTIVE, &ireq->flags)) {
+			task_sequence = ISCI_TAG_SEQ(io_tag);
+
+			if (task_sequence == ihost->io_request_sequence[task_index])
+				return ireq;
+		}
+	}
+
+	return NULL;
+}
+
+/**
+ * This method allocates remote node index and the reserves the remote node
+ *    context space for use. This method can fail if there are no more remote
+ *    node index available.
+ * @scic: This is the controller object which contains the set of
+ *    free remote node ids
+ * @sci_dev: This is the device object which is requesting the a remote node
+ *    id
+ * @node_id: This is the remote node id that is assinged to the device if one
+ *    is available
+ *
+ * enum sci_status SCI_FAILURE_OUT_OF_RESOURCES if there are no available remote
+ * node index available.
+ */
+enum sci_status sci_controller_allocate_remote_node_context(struct isci_host *ihost,
+							    struct isci_remote_device *idev,
+							    u16 *node_id)
+{
+	u16 node_index;
+	u32 remote_node_count = sci_remote_device_node_count(idev);
+
+	node_index = sci_remote_node_table_allocate_remote_node(
+		&ihost->available_remote_nodes, remote_node_count
+		);
+
+	if (node_index != SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) {
+		ihost->device_table[node_index] = idev;
+
+		*node_id = node_index;
+
+		return SCI_SUCCESS;
+	}
+
+	return SCI_FAILURE_INSUFFICIENT_RESOURCES;
+}
+
+void sci_controller_free_remote_node_context(struct isci_host *ihost,
+					     struct isci_remote_device *idev,
+					     u16 node_id)
+{
+	u32 remote_node_count = sci_remote_device_node_count(idev);
+
+	if (ihost->device_table[node_id] == idev) {
+		ihost->device_table[node_id] = NULL;
+
+		sci_remote_node_table_release_remote_node_index(
+			&ihost->available_remote_nodes, remote_node_count, node_id
+			);
+	}
+}
+
+void sci_controller_copy_sata_response(void *response_buffer,
+				       void *frame_header,
+				       void *frame_buffer)
+{
+	/* XXX type safety? */
+	memcpy(response_buffer, frame_header, sizeof(u32));
+
+	memcpy(response_buffer + sizeof(u32),
+	       frame_buffer,
+	       sizeof(struct dev_to_host_fis) - sizeof(u32));
+}
+
+void sci_controller_release_frame(struct isci_host *ihost, u32 frame_index)
+{
+	if (sci_unsolicited_frame_control_release_frame(&ihost->uf_control, frame_index))
+		writel(ihost->uf_control.get,
+			&ihost->scu_registers->sdma.unsolicited_frame_get_pointer);
+}
+
+void isci_tci_free(struct isci_host *ihost, u16 tci)
+{
+	u16 tail = ihost->tci_tail & (SCI_MAX_IO_REQUESTS-1);
+
+	ihost->tci_pool[tail] = tci;
+	ihost->tci_tail = tail + 1;
+}
+
+static u16 isci_tci_alloc(struct isci_host *ihost)
+{
+	u16 head = ihost->tci_head & (SCI_MAX_IO_REQUESTS-1);
+	u16 tci = ihost->tci_pool[head];
+
+	ihost->tci_head = head + 1;
+	return tci;
+}
+
+static u16 isci_tci_space(struct isci_host *ihost)
+{
+	return CIRC_SPACE(ihost->tci_head, ihost->tci_tail, SCI_MAX_IO_REQUESTS);
+}
+
+u16 isci_alloc_tag(struct isci_host *ihost)
+{
+	if (isci_tci_space(ihost)) {
+		u16 tci = isci_tci_alloc(ihost);
+		u8 seq = ihost->io_request_sequence[tci];
+
+		return ISCI_TAG(seq, tci);
+	}
+
+	return SCI_CONTROLLER_INVALID_IO_TAG;
+}
+
+enum sci_status isci_free_tag(struct isci_host *ihost, u16 io_tag)
+{
+	u16 tci = ISCI_TAG_TCI(io_tag);
+	u16 seq = ISCI_TAG_SEQ(io_tag);
+
+	/* prevent tail from passing head */
+	if (isci_tci_active(ihost) == 0)
+		return SCI_FAILURE_INVALID_IO_TAG;
+
+	if (seq == ihost->io_request_sequence[tci]) {
+		ihost->io_request_sequence[tci] = (seq+1) & (SCI_MAX_SEQ-1);
+
+		isci_tci_free(ihost, tci);
+
+		return SCI_SUCCESS;
+	}
+	return SCI_FAILURE_INVALID_IO_TAG;
+}
+
+enum sci_status sci_controller_start_io(struct isci_host *ihost,
+					struct isci_remote_device *idev,
+					struct isci_request *ireq)
+{
+	enum sci_status status;
+
+	if (ihost->sm.current_state_id != SCIC_READY) {
+		dev_warn(&ihost->pdev->dev, "invalid state to start I/O");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	status = sci_remote_device_start_io(ihost, idev, ireq);
+	if (status != SCI_SUCCESS)
+		return status;
+
+	set_bit(IREQ_ACTIVE, &ireq->flags);
+	sci_controller_post_request(ihost, ireq->post_context);
+	return SCI_SUCCESS;
+}
+
+enum sci_status sci_controller_terminate_request(struct isci_host *ihost,
+						 struct isci_remote_device *idev,
+						 struct isci_request *ireq)
+{
+	/* terminate an ongoing (i.e. started) core IO request.  This does not
+	 * abort the IO request at the target, but rather removes the IO
+	 * request from the host controller.
+	 */
+	enum sci_status status;
+
+	if (ihost->sm.current_state_id != SCIC_READY) {
+		dev_warn(&ihost->pdev->dev,
+			 "invalid state to terminate request\n");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	status = sci_io_request_terminate(ireq);
+	if (status != SCI_SUCCESS)
+		return status;
+
+	/*
+	 * Utilize the original post context command and or in the POST_TC_ABORT
+	 * request sub-type.
+	 */
+	sci_controller_post_request(ihost,
+				    ireq->post_context | SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT);
+	return SCI_SUCCESS;
+}
+
+/**
+ * sci_controller_complete_io() - This method will perform core specific
+ *    completion operations for an IO request.  After this method is invoked,
+ *    the user should consider the IO request as invalid until it is properly
+ *    reused (i.e. re-constructed).
+ * @ihost: The handle to the controller object for which to complete the
+ *    IO request.
+ * @idev: The handle to the remote device object for which to complete
+ *    the IO request.
+ * @ireq: the handle to the io request object to complete.
+ */
+enum sci_status sci_controller_complete_io(struct isci_host *ihost,
+					   struct isci_remote_device *idev,
+					   struct isci_request *ireq)
+{
+	enum sci_status status;
+	u16 index;
+
+	switch (ihost->sm.current_state_id) {
+	case SCIC_STOPPING:
+		/* XXX: Implement this function */
+		return SCI_FAILURE;
+	case SCIC_READY:
+		status = sci_remote_device_complete_io(ihost, idev, ireq);
+		if (status != SCI_SUCCESS)
+			return status;
+
+		index = ISCI_TAG_TCI(ireq->io_tag);
+		clear_bit(IREQ_ACTIVE, &ireq->flags);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(&ihost->pdev->dev, "invalid state to complete I/O");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+}
+
+enum sci_status sci_controller_continue_io(struct isci_request *ireq)
+{
+	struct isci_host *ihost = ireq->owning_controller;
+
+	if (ihost->sm.current_state_id != SCIC_READY) {
+		dev_warn(&ihost->pdev->dev, "invalid state to continue I/O");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	set_bit(IREQ_ACTIVE, &ireq->flags);
+	sci_controller_post_request(ihost, ireq->post_context);
+	return SCI_SUCCESS;
+}
+
+/**
+ * sci_controller_start_task() - This method is called by the SCIC user to
+ *    send/start a framework task management request.
+ * @controller: the handle to the controller object for which to start the task
+ *    management request.
+ * @remote_device: the handle to the remote device object for which to start
+ *    the task management request.
+ * @task_request: the handle to the task request object to start.
+ */
+enum sci_task_status sci_controller_start_task(struct isci_host *ihost,
+					       struct isci_remote_device *idev,
+					       struct isci_request *ireq)
+{
+	enum sci_status status;
+
+	if (ihost->sm.current_state_id != SCIC_READY) {
+		dev_warn(&ihost->pdev->dev,
+			 "%s: SCIC Controller starting task from invalid "
+			 "state\n",
+			 __func__);
+		return SCI_TASK_FAILURE_INVALID_STATE;
+	}
+
+	status = sci_remote_device_start_task(ihost, idev, ireq);
+	switch (status) {
+	case SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS:
+		set_bit(IREQ_ACTIVE, &ireq->flags);
+
+		/*
+		 * We will let framework know this task request started successfully,
+		 * although core is still woring on starting the request (to post tc when
+		 * RNC is resumed.)
+		 */
+		return SCI_SUCCESS;
+	case SCI_SUCCESS:
+		set_bit(IREQ_ACTIVE, &ireq->flags);
+		sci_controller_post_request(ihost, ireq->post_context);
+		break;
+	default:
+		break;
+	}
+
+	return status;
+}
diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h
new file mode 100644
index 0000000..062101a
--- /dev/null
+++ b/drivers/scsi/isci/host.h
@@ -0,0 +1,542 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _SCI_HOST_H_
+#define _SCI_HOST_H_
+
+#include "remote_device.h"
+#include "phy.h"
+#include "isci.h"
+#include "remote_node_table.h"
+#include "registers.h"
+#include "unsolicited_frame_control.h"
+#include "probe_roms.h"
+
+struct isci_request;
+struct scu_task_context;
+
+
+/**
+ * struct sci_power_control -
+ *
+ * This structure defines the fields for managing power control for direct
+ * attached disk devices.
+ */
+struct sci_power_control {
+	/**
+	 * This field is set when the power control timer is running and cleared when
+	 * it is not.
+	 */
+	bool timer_started;
+
+	/**
+	 * Timer to control when the directed attached disks can consume power.
+	 */
+	struct sci_timer timer;
+
+	/**
+	 * This field is used to keep track of how many phys are put into the
+	 * requesters field.
+	 */
+	u8 phys_waiting;
+
+	/**
+	 * This field is used to keep track of how many phys have been granted to consume power
+	 */
+	u8 phys_granted_power;
+
+	/**
+	 * This field is an array of phys that we are waiting on. The phys are direct
+	 * mapped into requesters via struct sci_phy.phy_index
+	 */
+	struct isci_phy *requesters[SCI_MAX_PHYS];
+
+};
+
+struct sci_port_configuration_agent;
+typedef void (*port_config_fn)(struct isci_host *,
+			       struct sci_port_configuration_agent *,
+			       struct isci_port *, struct isci_phy *);
+
+struct sci_port_configuration_agent {
+	u16 phy_configured_mask;
+	u16 phy_ready_mask;
+	struct {
+		u8 min_index;
+		u8 max_index;
+	} phy_valid_port_range[SCI_MAX_PHYS];
+	bool timer_pending;
+	port_config_fn link_up_handler;
+	port_config_fn link_down_handler;
+	struct sci_timer	timer;
+};
+
+/**
+ * isci_host - primary host/controller object
+ * @timer: timeout start/stop operations
+ * @device_table: rni (hw remote node index) to remote device lookup table
+ * @available_remote_nodes: rni allocator
+ * @power_control: manage device spin up
+ * @io_request_sequence: generation number for tci's (task contexts)
+ * @task_context_table: hw task context table
+ * @remote_node_context_table: hw remote node context table
+ * @completion_queue: hw-producer driver-consumer communication ring
+ * @completion_queue_get: tracks the driver 'head' of the ring to notify hw
+ * @logical_port_entries: min({driver|silicon}-supported-port-count)
+ * @remote_node_entries: min({driver|silicon}-supported-node-count)
+ * @task_context_entries: min({driver|silicon}-supported-task-count)
+ * @phy_timer: phy startup timer
+ * @invalid_phy_mask: if an invalid_link_up notification is reported a bit for
+ * 		      the phy index is set so further notifications are not
+ * 		      made.  Once the phy reports link up and is made part of a
+ * 		      port then this bit is cleared.
+
+ */
+struct isci_host {
+	struct sci_base_state_machine sm;
+	/* XXX can we time this externally */
+	struct sci_timer timer;
+	/* XXX drop reference module params directly */
+	struct sci_user_parameters user_parameters;
+	/* XXX no need to be a union */
+	struct sci_oem_params oem_parameters;
+	struct sci_port_configuration_agent port_agent;
+	struct isci_remote_device *device_table[SCI_MAX_REMOTE_DEVICES];
+	struct sci_remote_node_table available_remote_nodes;
+	struct sci_power_control power_control;
+	u8 io_request_sequence[SCI_MAX_IO_REQUESTS];
+	struct scu_task_context *task_context_table;
+	dma_addr_t task_context_dma;
+	union scu_remote_node_context *remote_node_context_table;
+	u32 *completion_queue;
+	u32 completion_queue_get;
+	u32 logical_port_entries;
+	u32 remote_node_entries;
+	u32 task_context_entries;
+	struct sci_unsolicited_frame_control uf_control;
+
+	/* phy startup */
+	struct sci_timer phy_timer;
+	/* XXX kill */
+	bool phy_startup_timer_pending;
+	u32 next_phy_to_start;
+	/* XXX convert to unsigned long and use bitops */
+	u8 invalid_phy_mask;
+
+	/* TODO attempt dynamic interrupt coalescing scheme */
+	u16 interrupt_coalesce_number;
+	u32 interrupt_coalesce_timeout;
+	struct smu_registers __iomem *smu_registers;
+	struct scu_registers __iomem *scu_registers;
+
+	u16 tci_head;
+	u16 tci_tail;
+	u16 tci_pool[SCI_MAX_IO_REQUESTS];
+
+	int id; /* unique within a given pci device */
+	struct isci_phy phys[SCI_MAX_PHYS];
+	struct isci_port ports[SCI_MAX_PORTS + 1]; /* includes dummy port */
+	struct sas_ha_struct sas_ha;
+
+	spinlock_t state_lock;
+	struct pci_dev *pdev;
+	enum isci_status status;
+	#define IHOST_START_PENDING 0
+	#define IHOST_STOP_PENDING 1
+	unsigned long flags;
+	wait_queue_head_t eventq;
+	struct Scsi_Host *shost;
+	struct tasklet_struct completion_tasklet;
+	struct list_head requests_to_complete;
+	struct list_head requests_to_errorback;
+	spinlock_t scic_lock;
+	struct isci_request *reqs[SCI_MAX_IO_REQUESTS];
+	struct isci_remote_device devices[SCI_MAX_REMOTE_DEVICES];
+};
+
+/**
+ * enum sci_controller_states - This enumeration depicts all the states
+ *    for the common controller state machine.
+ */
+enum sci_controller_states {
+	/**
+	 * Simply the initial state for the base controller state machine.
+	 */
+	SCIC_INITIAL = 0,
+
+	/**
+	 * This state indicates that the controller is reset.  The memory for
+	 * the controller is in it's initial state, but the controller requires
+	 * initialization.
+	 * This state is entered from the INITIAL state.
+	 * This state is entered from the RESETTING state.
+	 */
+	SCIC_RESET,
+
+	/**
+	 * This state is typically an action state that indicates the controller
+	 * is in the process of initialization.  In this state no new IO operations
+	 * are permitted.
+	 * This state is entered from the RESET state.
+	 */
+	SCIC_INITIALIZING,
+
+	/**
+	 * This state indicates that the controller has been successfully
+	 * initialized.  In this state no new IO operations are permitted.
+	 * This state is entered from the INITIALIZING state.
+	 */
+	SCIC_INITIALIZED,
+
+	/**
+	 * This state indicates the the controller is in the process of becoming
+	 * ready (i.e. starting).  In this state no new IO operations are permitted.
+	 * This state is entered from the INITIALIZED state.
+	 */
+	SCIC_STARTING,
+
+	/**
+	 * This state indicates the controller is now ready.  Thus, the user
+	 * is able to perform IO operations on the controller.
+	 * This state is entered from the STARTING state.
+	 */
+	SCIC_READY,
+
+	/**
+	 * This state is typically an action state that indicates the controller
+	 * is in the process of resetting.  Thus, the user is unable to perform
+	 * IO operations on the controller.  A reset is considered destructive in
+	 * most cases.
+	 * This state is entered from the READY state.
+	 * This state is entered from the FAILED state.
+	 * This state is entered from the STOPPED state.
+	 */
+	SCIC_RESETTING,
+
+	/**
+	 * This state indicates that the controller is in the process of stopping.
+	 * In this state no new IO operations are permitted, but existing IO
+	 * operations are allowed to complete.
+	 * This state is entered from the READY state.
+	 */
+	SCIC_STOPPING,
+
+	/**
+	 * This state indicates that the controller has successfully been stopped.
+	 * In this state no new IO operations are permitted.
+	 * This state is entered from the STOPPING state.
+	 */
+	SCIC_STOPPED,
+
+	/**
+	 * This state indicates that the controller could not successfully be
+	 * initialized.  In this state no new IO operations are permitted.
+	 * This state is entered from the INITIALIZING state.
+	 * This state is entered from the STARTING state.
+	 * This state is entered from the STOPPING state.
+	 * This state is entered from the RESETTING state.
+	 */
+	SCIC_FAILED,
+};
+
+/**
+ * struct isci_pci_info - This class represents the pci function containing the
+ *    controllers. Depending on PCI SKU, there could be up to 2 controllers in
+ *    the PCI function.
+ */
+#define SCI_MAX_MSIX_INT (SCI_NUM_MSI_X_INT*SCI_MAX_CONTROLLERS)
+
+struct isci_pci_info {
+	struct msix_entry msix_entries[SCI_MAX_MSIX_INT];
+	struct isci_host *hosts[SCI_MAX_CONTROLLERS];
+	struct isci_orom *orom;
+};
+
+static inline struct isci_pci_info *to_pci_info(struct pci_dev *pdev)
+{
+	return pci_get_drvdata(pdev);
+}
+
+#define for_each_isci_host(id, ihost, pdev) \
+	for (id = 0, ihost = to_pci_info(pdev)->hosts[id]; \
+	     id < ARRAY_SIZE(to_pci_info(pdev)->hosts) && ihost; \
+	     ihost = to_pci_info(pdev)->hosts[++id])
+
+static inline enum isci_status isci_host_get_state(struct isci_host *isci_host)
+{
+	return isci_host->status;
+}
+
+static inline void isci_host_change_state(struct isci_host *isci_host,
+					  enum isci_status status)
+{
+	unsigned long flags;
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_host = %p, state = 0x%x",
+		__func__,
+		isci_host,
+		status);
+	spin_lock_irqsave(&isci_host->state_lock, flags);
+	isci_host->status = status;
+	spin_unlock_irqrestore(&isci_host->state_lock, flags);
+
+}
+
+static inline void wait_for_start(struct isci_host *ihost)
+{
+	wait_event(ihost->eventq, !test_bit(IHOST_START_PENDING, &ihost->flags));
+}
+
+static inline void wait_for_stop(struct isci_host *ihost)
+{
+	wait_event(ihost->eventq, !test_bit(IHOST_STOP_PENDING, &ihost->flags));
+}
+
+static inline void wait_for_device_start(struct isci_host *ihost, struct isci_remote_device *idev)
+{
+	wait_event(ihost->eventq, !test_bit(IDEV_START_PENDING, &idev->flags));
+}
+
+static inline void wait_for_device_stop(struct isci_host *ihost, struct isci_remote_device *idev)
+{
+	wait_event(ihost->eventq, !test_bit(IDEV_STOP_PENDING, &idev->flags));
+}
+
+static inline struct isci_host *dev_to_ihost(struct domain_device *dev)
+{
+	return dev->port->ha->lldd_ha;
+}
+
+/* we always use protocol engine group zero */
+#define ISCI_PEG 0
+
+/* see sci_controller_io_tag_allocate|free for how seq and tci are built */
+#define ISCI_TAG(seq, tci) (((u16) (seq)) << 12 | tci)
+
+/* these are returned by the hardware, so sanitize them */
+#define ISCI_TAG_SEQ(tag) (((tag) >> 12) & (SCI_MAX_SEQ-1))
+#define ISCI_TAG_TCI(tag) ((tag) & (SCI_MAX_IO_REQUESTS-1))
+
+/* expander attached sata devices require 3 rnc slots */
+static inline int sci_remote_device_node_count(struct isci_remote_device *idev)
+{
+	struct domain_device *dev = idev->domain_dev;
+
+	if ((dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) &&
+	    !idev->is_direct_attached)
+		return SCU_STP_REMOTE_NODE_COUNT;
+	return SCU_SSP_REMOTE_NODE_COUNT;
+}
+
+/**
+ * sci_controller_clear_invalid_phy() -
+ *
+ * This macro will clear the bit in the invalid phy mask for this controller
+ * object.  This is used to control messages reported for invalid link up
+ * notifications.
+ */
+#define sci_controller_clear_invalid_phy(controller, phy) \
+	((controller)->invalid_phy_mask &= ~(1 << (phy)->phy_index))
+
+static inline struct device *sciphy_to_dev(struct isci_phy *iphy)
+{
+
+	if (!iphy || !iphy->isci_port || !iphy->isci_port->isci_host)
+		return NULL;
+
+	return &iphy->isci_port->isci_host->pdev->dev;
+}
+
+static inline struct device *sciport_to_dev(struct isci_port *iport)
+{
+
+	if (!iport || !iport->isci_host)
+		return NULL;
+
+	return &iport->isci_host->pdev->dev;
+}
+
+static inline struct device *scirdev_to_dev(struct isci_remote_device *idev)
+{
+	if (!idev || !idev->isci_port || !idev->isci_port->isci_host)
+		return NULL;
+
+	return &idev->isci_port->isci_host->pdev->dev;
+}
+
+static inline bool is_a2(struct pci_dev *pdev)
+{
+	if (pdev->revision < 4)
+		return true;
+	return false;
+}
+
+static inline bool is_b0(struct pci_dev *pdev)
+{
+	if (pdev->revision == 4)
+		return true;
+	return false;
+}
+
+static inline bool is_c0(struct pci_dev *pdev)
+{
+	if (pdev->revision >= 5)
+		return true;
+	return false;
+}
+
+void sci_controller_post_request(struct isci_host *ihost,
+				      u32 request);
+void sci_controller_release_frame(struct isci_host *ihost,
+				       u32 frame_index);
+void sci_controller_copy_sata_response(void *response_buffer,
+					    void *frame_header,
+					    void *frame_buffer);
+enum sci_status sci_controller_allocate_remote_node_context(struct isci_host *ihost,
+								 struct isci_remote_device *idev,
+								 u16 *node_id);
+void sci_controller_free_remote_node_context(
+	struct isci_host *ihost,
+	struct isci_remote_device *idev,
+	u16 node_id);
+
+struct isci_request *sci_request_by_tag(struct isci_host *ihost,
+					     u16 io_tag);
+
+void sci_controller_power_control_queue_insert(
+	struct isci_host *ihost,
+	struct isci_phy *iphy);
+
+void sci_controller_power_control_queue_remove(
+	struct isci_host *ihost,
+	struct isci_phy *iphy);
+
+void sci_controller_link_up(
+	struct isci_host *ihost,
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+void sci_controller_link_down(
+	struct isci_host *ihost,
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+void sci_controller_remote_device_stopped(
+	struct isci_host *ihost,
+	struct isci_remote_device *idev);
+
+void sci_controller_copy_task_context(
+	struct isci_host *ihost,
+	struct isci_request *ireq);
+
+void sci_controller_register_setup(struct isci_host *ihost);
+
+enum sci_status sci_controller_continue_io(struct isci_request *ireq);
+int isci_host_scan_finished(struct Scsi_Host *, unsigned long);
+void isci_host_scan_start(struct Scsi_Host *);
+u16 isci_alloc_tag(struct isci_host *ihost);
+enum sci_status isci_free_tag(struct isci_host *ihost, u16 io_tag);
+void isci_tci_free(struct isci_host *ihost, u16 tci);
+
+int isci_host_init(struct isci_host *);
+
+void isci_host_init_controller_names(
+	struct isci_host *isci_host,
+	unsigned int controller_idx);
+
+void isci_host_deinit(
+	struct isci_host *);
+
+void isci_host_port_link_up(
+	struct isci_host *,
+	struct isci_port *,
+	struct isci_phy *);
+int isci_host_dev_found(struct domain_device *);
+
+void isci_host_remote_device_start_complete(
+	struct isci_host *,
+	struct isci_remote_device *,
+	enum sci_status);
+
+void sci_controller_disable_interrupts(
+	struct isci_host *ihost);
+
+enum sci_status sci_controller_start_io(
+	struct isci_host *ihost,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+enum sci_task_status sci_controller_start_task(
+	struct isci_host *ihost,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+enum sci_status sci_controller_terminate_request(
+	struct isci_host *ihost,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+enum sci_status sci_controller_complete_io(
+	struct isci_host *ihost,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+void sci_port_configuration_agent_construct(
+	struct sci_port_configuration_agent *port_agent);
+
+enum sci_status sci_port_configuration_agent_initialize(
+	struct isci_host *ihost,
+	struct sci_port_configuration_agent *port_agent);
+#endif
diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c
new file mode 100644
index 0000000..61e0d09
--- /dev/null
+++ b/drivers/scsi/isci/init.c
@@ -0,0 +1,565 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/firmware.h>
+#include <linux/efi.h>
+#include <asm/string.h>
+#include "isci.h"
+#include "task.h"
+#include "probe_roms.h"
+
+static struct scsi_transport_template *isci_transport_template;
+
+static DEFINE_PCI_DEVICE_TABLE(isci_id_table) = {
+	{ PCI_VDEVICE(INTEL, 0x1D61),},
+	{ PCI_VDEVICE(INTEL, 0x1D63),},
+	{ PCI_VDEVICE(INTEL, 0x1D65),},
+	{ PCI_VDEVICE(INTEL, 0x1D67),},
+	{ PCI_VDEVICE(INTEL, 0x1D69),},
+	{ PCI_VDEVICE(INTEL, 0x1D6B),},
+	{ PCI_VDEVICE(INTEL, 0x1D60),},
+	{ PCI_VDEVICE(INTEL, 0x1D62),},
+	{ PCI_VDEVICE(INTEL, 0x1D64),},
+	{ PCI_VDEVICE(INTEL, 0x1D66),},
+	{ PCI_VDEVICE(INTEL, 0x1D68),},
+	{ PCI_VDEVICE(INTEL, 0x1D6A),},
+	{}
+};
+
+MODULE_DEVICE_TABLE(pci, isci_id_table);
+
+/* linux isci specific settings */
+
+unsigned char no_outbound_task_to = 20;
+module_param(no_outbound_task_to, byte, 0);
+MODULE_PARM_DESC(no_outbound_task_to, "No Outbound Task Timeout (1us incr)");
+
+u16 ssp_max_occ_to = 20;
+module_param(ssp_max_occ_to, ushort, 0);
+MODULE_PARM_DESC(ssp_max_occ_to, "SSP Max occupancy timeout (100us incr)");
+
+u16 stp_max_occ_to = 5;
+module_param(stp_max_occ_to, ushort, 0);
+MODULE_PARM_DESC(stp_max_occ_to, "STP Max occupancy timeout (100us incr)");
+
+u16 ssp_inactive_to = 5;
+module_param(ssp_inactive_to, ushort, 0);
+MODULE_PARM_DESC(ssp_inactive_to, "SSP inactivity timeout (100us incr)");
+
+u16 stp_inactive_to = 5;
+module_param(stp_inactive_to, ushort, 0);
+MODULE_PARM_DESC(stp_inactive_to, "STP inactivity timeout (100us incr)");
+
+unsigned char phy_gen = 3;
+module_param(phy_gen, byte, 0);
+MODULE_PARM_DESC(phy_gen, "PHY generation (1: 1.5Gbps 2: 3.0Gbps 3: 6.0Gbps)");
+
+unsigned char max_concurr_spinup = 1;
+module_param(max_concurr_spinup, byte, 0);
+MODULE_PARM_DESC(max_concurr_spinup, "Max concurrent device spinup");
+
+static struct scsi_host_template isci_sht = {
+
+	.module				= THIS_MODULE,
+	.name				= DRV_NAME,
+	.proc_name			= DRV_NAME,
+	.queuecommand			= sas_queuecommand,
+	.target_alloc			= sas_target_alloc,
+	.slave_configure		= sas_slave_configure,
+	.slave_destroy			= sas_slave_destroy,
+	.scan_finished			= isci_host_scan_finished,
+	.scan_start			= isci_host_scan_start,
+	.change_queue_depth		= sas_change_queue_depth,
+	.change_queue_type		= sas_change_queue_type,
+	.bios_param			= sas_bios_param,
+	.can_queue			= ISCI_CAN_QUEUE_VAL,
+	.cmd_per_lun			= 1,
+	.this_id			= -1,
+	.sg_tablesize			= SG_ALL,
+	.max_sectors			= SCSI_DEFAULT_MAX_SECTORS,
+	.use_clustering			= ENABLE_CLUSTERING,
+	.eh_device_reset_handler	= sas_eh_device_reset_handler,
+	.eh_bus_reset_handler		= isci_bus_reset_handler,
+	.slave_alloc			= sas_slave_alloc,
+	.target_destroy			= sas_target_destroy,
+	.ioctl				= sas_ioctl,
+};
+
+static struct sas_domain_function_template isci_transport_ops  = {
+
+	/* The class calls these to notify the LLDD of an event. */
+	.lldd_port_formed	= isci_port_formed,
+	.lldd_port_deformed	= isci_port_deformed,
+
+	/* The class calls these when a device is found or gone. */
+	.lldd_dev_found		= isci_remote_device_found,
+	.lldd_dev_gone		= isci_remote_device_gone,
+
+	.lldd_execute_task	= isci_task_execute_task,
+	/* Task Management Functions. Must be called from process context. */
+	.lldd_abort_task	= isci_task_abort_task,
+	.lldd_abort_task_set	= isci_task_abort_task_set,
+	.lldd_clear_aca		= isci_task_clear_aca,
+	.lldd_clear_task_set	= isci_task_clear_task_set,
+	.lldd_I_T_nexus_reset	= isci_task_I_T_nexus_reset,
+	.lldd_lu_reset		= isci_task_lu_reset,
+	.lldd_query_task	= isci_task_query_task,
+
+	/* Port and Adapter management */
+	.lldd_clear_nexus_port	= isci_task_clear_nexus_port,
+	.lldd_clear_nexus_ha	= isci_task_clear_nexus_ha,
+
+	/* Phy management */
+	.lldd_control_phy	= isci_phy_control,
+};
+
+
+/******************************************************************************
+* P R O T E C T E D  M E T H O D S
+******************************************************************************/
+
+
+
+/**
+ * isci_register_sas_ha() - This method initializes various lldd
+ *    specific members of the sas_ha struct and calls the libsas
+ *    sas_register_ha() function.
+ * @isci_host: This parameter specifies the lldd specific wrapper for the
+ *    libsas sas_ha struct.
+ *
+ * This method returns an error code indicating sucess or failure. The user
+ * should check for possible memory allocation error return otherwise, a zero
+ * indicates success.
+ */
+static int isci_register_sas_ha(struct isci_host *isci_host)
+{
+	int i;
+	struct sas_ha_struct *sas_ha = &(isci_host->sas_ha);
+	struct asd_sas_phy **sas_phys;
+	struct asd_sas_port **sas_ports;
+
+	sas_phys = devm_kzalloc(&isci_host->pdev->dev,
+				SCI_MAX_PHYS * sizeof(void *),
+				GFP_KERNEL);
+	if (!sas_phys)
+		return -ENOMEM;
+
+	sas_ports = devm_kzalloc(&isci_host->pdev->dev,
+				 SCI_MAX_PORTS * sizeof(void *),
+				 GFP_KERNEL);
+	if (!sas_ports)
+		return -ENOMEM;
+
+	/*----------------- Libsas Initialization Stuff----------------------
+	 * Set various fields in the sas_ha struct:
+	 */
+
+	sas_ha->sas_ha_name = DRV_NAME;
+	sas_ha->lldd_module = THIS_MODULE;
+	sas_ha->sas_addr    = &isci_host->phys[0].sas_addr[0];
+
+	/* set the array of phy and port structs.  */
+	for (i = 0; i < SCI_MAX_PHYS; i++) {
+		sas_phys[i] = &isci_host->phys[i].sas_phy;
+		sas_ports[i] = &isci_host->ports[i].sas_port;
+	}
+
+	sas_ha->sas_phy  = sas_phys;
+	sas_ha->sas_port = sas_ports;
+	sas_ha->num_phys = SCI_MAX_PHYS;
+
+	sas_ha->lldd_queue_size = ISCI_CAN_QUEUE_VAL;
+	sas_ha->lldd_max_execute_num = 1;
+	sas_ha->strict_wide_ports = 1;
+
+	sas_register_ha(sas_ha);
+
+	return 0;
+}
+
+static ssize_t isci_show_id(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = container_of(dev, typeof(*shost), shost_dev);
+	struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
+	struct isci_host *ihost = container_of(sas_ha, typeof(*ihost), sas_ha);
+
+	return snprintf(buf, PAGE_SIZE, "%d\n", ihost->id);
+}
+
+static DEVICE_ATTR(isci_id, S_IRUGO, isci_show_id, NULL);
+
+static void isci_unregister(struct isci_host *isci_host)
+{
+	struct Scsi_Host *shost;
+
+	if (!isci_host)
+		return;
+
+	shost = isci_host->shost;
+	device_remove_file(&shost->shost_dev, &dev_attr_isci_id);
+
+	sas_unregister_ha(&isci_host->sas_ha);
+
+	sas_remove_host(isci_host->shost);
+	scsi_remove_host(isci_host->shost);
+	scsi_host_put(isci_host->shost);
+}
+
+static int __devinit isci_pci_init(struct pci_dev *pdev)
+{
+	int err, bar_num, bar_mask = 0;
+	void __iomem * const *iomap;
+
+	err = pcim_enable_device(pdev);
+	if (err) {
+		dev_err(&pdev->dev,
+			"failed enable PCI device %s!\n",
+			pci_name(pdev));
+		return err;
+	}
+
+	for (bar_num = 0; bar_num < SCI_PCI_BAR_COUNT; bar_num++)
+		bar_mask |= 1 << (bar_num * 2);
+
+	err = pcim_iomap_regions(pdev, bar_mask, DRV_NAME);
+	if (err)
+		return err;
+
+	iomap = pcim_iomap_table(pdev);
+	if (!iomap)
+		return -ENOMEM;
+
+	pci_set_master(pdev);
+
+	err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+	if (err) {
+		err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (err)
+			return err;
+	}
+
+	err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
+	if (err) {
+		err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static int num_controllers(struct pci_dev *pdev)
+{
+	/* bar size alone can tell us if we are running with a dual controller
+	 * part, no need to trust revision ids that might be under broken firmware
+	 * control
+	 */
+	resource_size_t scu_bar_size = pci_resource_len(pdev, SCI_SCU_BAR*2);
+	resource_size_t smu_bar_size = pci_resource_len(pdev, SCI_SMU_BAR*2);
+
+	if (scu_bar_size >= SCI_SCU_BAR_SIZE*SCI_MAX_CONTROLLERS &&
+	    smu_bar_size >= SCI_SMU_BAR_SIZE*SCI_MAX_CONTROLLERS)
+		return SCI_MAX_CONTROLLERS;
+	else
+		return 1;
+}
+
+static int isci_setup_interrupts(struct pci_dev *pdev)
+{
+	int err, i, num_msix;
+	struct isci_host *ihost;
+	struct isci_pci_info *pci_info = to_pci_info(pdev);
+
+	/*
+	 *  Determine the number of vectors associated with this
+	 *  PCI function.
+	 */
+	num_msix = num_controllers(pdev) * SCI_NUM_MSI_X_INT;
+
+	for (i = 0; i < num_msix; i++)
+		pci_info->msix_entries[i].entry = i;
+
+	err = pci_enable_msix(pdev, pci_info->msix_entries, num_msix);
+	if (err)
+		goto intx;
+
+	for (i = 0; i < num_msix; i++) {
+		int id = i / SCI_NUM_MSI_X_INT;
+		struct msix_entry *msix = &pci_info->msix_entries[i];
+		irq_handler_t isr;
+
+		ihost = pci_info->hosts[id];
+		/* odd numbered vectors are error interrupts */
+		if (i & 1)
+			isr = isci_error_isr;
+		else
+			isr = isci_msix_isr;
+
+		err = devm_request_irq(&pdev->dev, msix->vector, isr, 0,
+				       DRV_NAME"-msix", ihost);
+		if (!err)
+			continue;
+
+		dev_info(&pdev->dev, "msix setup failed falling back to intx\n");
+		while (i--) {
+			id = i / SCI_NUM_MSI_X_INT;
+			ihost = pci_info->hosts[id];
+			msix = &pci_info->msix_entries[i];
+			devm_free_irq(&pdev->dev, msix->vector, ihost);
+		}
+		pci_disable_msix(pdev);
+		goto intx;
+	}
+	return 0;
+
+ intx:
+	for_each_isci_host(i, ihost, pdev) {
+		err = devm_request_irq(&pdev->dev, pdev->irq, isci_intx_isr,
+				       IRQF_SHARED, DRV_NAME"-intx", ihost);
+		if (err)
+			break;
+	}
+	return err;
+}
+
+static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id)
+{
+	struct isci_host *isci_host;
+	struct Scsi_Host *shost;
+	int err;
+
+	isci_host = devm_kzalloc(&pdev->dev, sizeof(*isci_host), GFP_KERNEL);
+	if (!isci_host)
+		return NULL;
+
+	isci_host->pdev = pdev;
+	isci_host->id = id;
+
+	shost = scsi_host_alloc(&isci_sht, sizeof(void *));
+	if (!shost)
+		return NULL;
+	isci_host->shost = shost;
+
+	err = isci_host_init(isci_host);
+	if (err)
+		goto err_shost;
+
+	SHOST_TO_SAS_HA(shost) = &isci_host->sas_ha;
+	isci_host->sas_ha.core.shost = shost;
+	shost->transportt = isci_transport_template;
+
+	shost->max_id = ~0;
+	shost->max_lun = ~0;
+	shost->max_cmd_len = MAX_COMMAND_SIZE;
+
+	err = scsi_add_host(shost, &pdev->dev);
+	if (err)
+		goto err_shost;
+
+	err = isci_register_sas_ha(isci_host);
+	if (err)
+		goto err_shost_remove;
+
+	err = device_create_file(&shost->shost_dev, &dev_attr_isci_id);
+	if (err)
+		goto err_unregister_ha;
+
+	return isci_host;
+
+ err_unregister_ha:
+	sas_unregister_ha(&(isci_host->sas_ha));
+ err_shost_remove:
+	scsi_remove_host(shost);
+ err_shost:
+	scsi_host_put(shost);
+
+	return NULL;
+}
+
+static int __devinit isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	struct isci_pci_info *pci_info;
+	int err, i;
+	struct isci_host *isci_host;
+	const struct firmware *fw = NULL;
+	struct isci_orom *orom = NULL;
+	char *source = "(platform)";
+
+	dev_info(&pdev->dev, "driver configured for rev: %d silicon\n",
+		 pdev->revision);
+
+	pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL);
+	if (!pci_info)
+		return -ENOMEM;
+	pci_set_drvdata(pdev, pci_info);
+
+	if (efi_enabled)
+		orom = isci_get_efi_var(pdev);
+
+	if (!orom)
+		orom = isci_request_oprom(pdev);
+
+	for (i = 0; orom && i < ARRAY_SIZE(orom->ctrl); i++) {
+		if (sci_oem_parameters_validate(&orom->ctrl[i])) {
+			dev_warn(&pdev->dev,
+				 "[%d]: invalid oem parameters detected, falling back to firmware\n", i);
+			devm_kfree(&pdev->dev, orom);
+			orom = NULL;
+			break;
+		}
+	}
+
+	if (!orom) {
+		source = "(firmware)";
+		orom = isci_request_firmware(pdev, fw);
+		if (!orom) {
+			/* TODO convert this to WARN_TAINT_ONCE once the
+			 * orom/efi parameter support is widely available
+			 */
+			dev_warn(&pdev->dev,
+				 "Loading user firmware failed, using default "
+				 "values\n");
+			dev_warn(&pdev->dev,
+				 "Default OEM configuration being used: 4 "
+				 "narrow ports, and default SAS Addresses\n");
+		}
+	}
+
+	if (orom)
+		dev_info(&pdev->dev,
+			 "OEM SAS parameters (version: %u.%u) loaded %s\n",
+			 (orom->hdr.version & 0xf0) >> 4,
+			 (orom->hdr.version & 0xf), source);
+
+	pci_info->orom = orom;
+
+	err = isci_pci_init(pdev);
+	if (err)
+		return err;
+
+	for (i = 0; i < num_controllers(pdev); i++) {
+		struct isci_host *h = isci_host_alloc(pdev, i);
+
+		if (!h) {
+			err = -ENOMEM;
+			goto err_host_alloc;
+		}
+		pci_info->hosts[i] = h;
+	}
+
+	err = isci_setup_interrupts(pdev);
+	if (err)
+		goto err_host_alloc;
+
+	for_each_isci_host(i, isci_host, pdev)
+		scsi_scan_host(isci_host->shost);
+
+	return 0;
+
+ err_host_alloc:
+	for_each_isci_host(i, isci_host, pdev)
+		isci_unregister(isci_host);
+	return err;
+}
+
+static void __devexit isci_pci_remove(struct pci_dev *pdev)
+{
+	struct isci_host *ihost;
+	int i;
+
+	for_each_isci_host(i, ihost, pdev) {
+		isci_unregister(ihost);
+		isci_host_deinit(ihost);
+		sci_controller_disable_interrupts(ihost);
+	}
+}
+
+static struct pci_driver isci_pci_driver = {
+	.name		= DRV_NAME,
+	.id_table	= isci_id_table,
+	.probe		= isci_pci_probe,
+	.remove		= __devexit_p(isci_pci_remove),
+};
+
+static __init int isci_init(void)
+{
+	int err;
+
+	pr_info("%s: Intel(R) C600 SAS Controller Driver\n", DRV_NAME);
+
+	isci_transport_template = sas_domain_attach_transport(&isci_transport_ops);
+	if (!isci_transport_template)
+		return -ENOMEM;
+
+	err = pci_register_driver(&isci_pci_driver);
+	if (err)
+		sas_release_transport(isci_transport_template);
+
+	return err;
+}
+
+static __exit void isci_exit(void)
+{
+	pci_unregister_driver(&isci_pci_driver);
+	sas_release_transport(isci_transport_template);
+}
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_FIRMWARE(ISCI_FW_NAME);
+module_init(isci_init);
+module_exit(isci_exit);
diff --git a/drivers/scsi/isci/isci.h b/drivers/scsi/isci/isci.h
new file mode 100644
index 0000000..d1de633
--- /dev/null
+++ b/drivers/scsi/isci/isci.h
@@ -0,0 +1,538 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __ISCI_H__
+#define __ISCI_H__
+
+#include <linux/interrupt.h>
+#include <linux/types.h>
+
+#define DRV_NAME "isci"
+#define SCI_PCI_BAR_COUNT 2
+#define SCI_NUM_MSI_X_INT 2
+#define SCI_SMU_BAR       0
+#define SCI_SMU_BAR_SIZE  (16*1024)
+#define SCI_SCU_BAR       1
+#define SCI_SCU_BAR_SIZE  (4*1024*1024)
+#define SCI_IO_SPACE_BAR0 2
+#define SCI_IO_SPACE_BAR1 3
+#define ISCI_CAN_QUEUE_VAL 250 /* < SCI_MAX_IO_REQUESTS ? */
+#define SCIC_CONTROLLER_STOP_TIMEOUT 5000
+
+#define SCI_CONTROLLER_INVALID_IO_TAG 0xFFFF
+
+#define SCI_MAX_PHYS  (4UL)
+#define SCI_MAX_PORTS SCI_MAX_PHYS
+#define SCI_MAX_SMP_PHYS  (384) /* not silicon constrained */
+#define SCI_MAX_REMOTE_DEVICES (256UL)
+#define SCI_MAX_IO_REQUESTS (256UL)
+#define SCI_MAX_SEQ (16)
+#define SCI_MAX_MSIX_MESSAGES  (2)
+#define SCI_MAX_SCATTER_GATHER_ELEMENTS 130 /* not silicon constrained */
+#define SCI_MAX_CONTROLLERS 2
+#define SCI_MAX_DOMAINS  SCI_MAX_PORTS
+
+#define SCU_MAX_CRITICAL_NOTIFICATIONS    (384)
+#define SCU_MAX_EVENTS_SHIFT		  (7)
+#define SCU_MAX_EVENTS                    (1 << SCU_MAX_EVENTS_SHIFT)
+#define SCU_MAX_UNSOLICITED_FRAMES        (128)
+#define SCU_MAX_COMPLETION_QUEUE_SCRATCH  (128)
+#define SCU_MAX_COMPLETION_QUEUE_ENTRIES  (SCU_MAX_CRITICAL_NOTIFICATIONS \
+					   + SCU_MAX_EVENTS \
+					   + SCU_MAX_UNSOLICITED_FRAMES	\
+					   + SCI_MAX_IO_REQUESTS \
+					   + SCU_MAX_COMPLETION_QUEUE_SCRATCH)
+#define SCU_MAX_COMPLETION_QUEUE_SHIFT	  (ilog2(SCU_MAX_COMPLETION_QUEUE_ENTRIES))
+
+#define SCU_ABSOLUTE_MAX_UNSOLICITED_FRAMES (4096)
+#define SCU_UNSOLICITED_FRAME_BUFFER_SIZE   (1024)
+#define SCU_INVALID_FRAME_INDEX             (0xFFFF)
+
+#define SCU_IO_REQUEST_MAX_SGE_SIZE         (0x00FFFFFF)
+#define SCU_IO_REQUEST_MAX_TRANSFER_LENGTH  (0x00FFFFFF)
+
+static inline void check_sizes(void)
+{
+	BUILD_BUG_ON_NOT_POWER_OF_2(SCU_MAX_EVENTS);
+	BUILD_BUG_ON(SCU_MAX_UNSOLICITED_FRAMES <= 8);
+	BUILD_BUG_ON_NOT_POWER_OF_2(SCU_MAX_UNSOLICITED_FRAMES);
+	BUILD_BUG_ON_NOT_POWER_OF_2(SCU_MAX_COMPLETION_QUEUE_ENTRIES);
+	BUILD_BUG_ON(SCU_MAX_UNSOLICITED_FRAMES > SCU_ABSOLUTE_MAX_UNSOLICITED_FRAMES);
+	BUILD_BUG_ON_NOT_POWER_OF_2(SCI_MAX_IO_REQUESTS);
+	BUILD_BUG_ON_NOT_POWER_OF_2(SCI_MAX_SEQ);
+}
+
+/**
+ * enum sci_status - This is the general return status enumeration for non-IO,
+ *    non-task management related SCI interface methods.
+ *
+ *
+ */
+enum sci_status {
+	/**
+	 * This member indicates successful completion.
+	 */
+	SCI_SUCCESS = 0,
+
+	/**
+	 * This value indicates that the calling method completed successfully,
+	 * but that the IO may have completed before having it's start method
+	 * invoked.  This occurs during SAT translation for requests that do
+	 * not require an IO to the target or for any other requests that may
+	 * be completed without having to submit IO.
+	 */
+	SCI_SUCCESS_IO_COMPLETE_BEFORE_START,
+
+	/**
+	 *  This Value indicates that the SCU hardware returned an early response
+	 *  because the io request specified more data than is returned by the
+	 *  target device (mode pages, inquiry data, etc.). The completion routine
+	 *  will handle this case to get the actual number of bytes transferred.
+	 */
+	SCI_SUCCESS_IO_DONE_EARLY,
+
+	/**
+	 * This member indicates that the object for which a state change is
+	 * being requested is already in said state.
+	 */
+	SCI_WARNING_ALREADY_IN_STATE,
+
+	/**
+	 * This member indicates interrupt coalescence timer may cause SAS
+	 * specification compliance issues (i.e. SMP target mode response
+	 * frames must be returned within 1.9 milliseconds).
+	 */
+	SCI_WARNING_TIMER_CONFLICT,
+
+	/**
+	 * This field indicates a sequence of action is not completed yet. Mostly,
+	 * this status is used when multiple ATA commands are needed in a SATI translation.
+	 */
+	SCI_WARNING_SEQUENCE_INCOMPLETE,
+
+	/**
+	 * This member indicates that there was a general failure.
+	 */
+	SCI_FAILURE,
+
+	/**
+	 * This member indicates that the SCI implementation is unable to complete
+	 * an operation due to a critical flaw the prevents any further operation
+	 * (i.e. an invalid pointer).
+	 */
+	SCI_FATAL_ERROR,
+
+	/**
+	 * This member indicates the calling function failed, because the state
+	 * of the controller is in a state that prevents successful completion.
+	 */
+	SCI_FAILURE_INVALID_STATE,
+
+	/**
+	 * This member indicates the calling function failed, because there is
+	 * insufficient resources/memory to complete the request.
+	 */
+	SCI_FAILURE_INSUFFICIENT_RESOURCES,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * controller object required for the operation can't be located.
+	 */
+	SCI_FAILURE_CONTROLLER_NOT_FOUND,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * discovered controller type is not supported by the library.
+	 */
+	SCI_FAILURE_UNSUPPORTED_CONTROLLER_TYPE,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * requested initialization data version isn't supported.
+	 */
+	SCI_FAILURE_UNSUPPORTED_INIT_DATA_VERSION,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * requested configuration of SAS Phys into SAS Ports is not supported.
+	 */
+	SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * requested protocol is not supported by the remote device, port,
+	 * or controller.
+	 */
+	SCI_FAILURE_UNSUPPORTED_PROTOCOL,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * requested information type is not supported by the SCI implementation.
+	 */
+	SCI_FAILURE_UNSUPPORTED_INFORMATION_TYPE,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * device already exists.
+	 */
+	SCI_FAILURE_DEVICE_EXISTS,
+
+	/**
+	 * This member indicates the calling function failed, because adding
+	 * a phy to the object is not possible.
+	 */
+	SCI_FAILURE_ADDING_PHY_UNSUPPORTED,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * requested information type is not supported by the SCI implementation.
+	 */
+	SCI_FAILURE_UNSUPPORTED_INFORMATION_FIELD,
+
+	/**
+	 * This member indicates the calling function failed, because the SCI
+	 * implementation does not support the supplied time limit.
+	 */
+	SCI_FAILURE_UNSUPPORTED_TIME_LIMIT,
+
+	/**
+	 * This member indicates the calling method failed, because the SCI
+	 * implementation does not contain the specified Phy.
+	 */
+	SCI_FAILURE_INVALID_PHY,
+
+	/**
+	 * This member indicates the calling method failed, because the SCI
+	 * implementation does not contain the specified Port.
+	 */
+	SCI_FAILURE_INVALID_PORT,
+
+	/**
+	 * This member indicates the calling method was partly successful
+	 * The port was reset but not all phys in port are operational
+	 */
+	SCI_FAILURE_RESET_PORT_PARTIAL_SUCCESS,
+
+	/**
+	 * This member indicates that calling method failed
+	 * The port reset did not complete because none of the phys are operational
+	 */
+	SCI_FAILURE_RESET_PORT_FAILURE,
+
+	/**
+	 * This member indicates the calling method failed, because the SCI
+	 * implementation does not contain the specified remote device.
+	 */
+	SCI_FAILURE_INVALID_REMOTE_DEVICE,
+
+	/**
+	 * This member indicates the calling method failed, because the remote
+	 * device is in a bad state and requires a reset.
+	 */
+	SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED,
+
+	/**
+	 * This member indicates the calling method failed, because the SCI
+	 * implementation does not contain or support the specified IO tag.
+	 */
+	SCI_FAILURE_INVALID_IO_TAG,
+
+	/**
+	 * This member indicates that the operation failed and the user should
+	 * check the response data associated with the IO.
+	 */
+	SCI_FAILURE_IO_RESPONSE_VALID,
+
+	/**
+	 * This member indicates that the operation failed, the failure is
+	 * controller implementation specific, and the response data associated
+	 * with the request is not valid.  You can query for the controller
+	 * specific error information via sci_controller_get_request_status()
+	 */
+	SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR,
+
+	/**
+	 * This member indicated that the operation failed because the
+	 * user requested this IO to be terminated.
+	 */
+	SCI_FAILURE_IO_TERMINATED,
+
+	/**
+	 * This member indicates that the operation failed and the associated
+	 * request requires a SCSI abort task to be sent to the target.
+	 */
+	SCI_FAILURE_IO_REQUIRES_SCSI_ABORT,
+
+	/**
+	 * This member indicates that the operation failed because the supplied
+	 * device could not be located.
+	 */
+	SCI_FAILURE_DEVICE_NOT_FOUND,
+
+	/**
+	 * This member indicates that the operation failed because the
+	 * objects association is required and is not correctly set.
+	 */
+	SCI_FAILURE_INVALID_ASSOCIATION,
+
+	/**
+	 * This member indicates that the operation failed, because a timeout
+	 * occurred.
+	 */
+	SCI_FAILURE_TIMEOUT,
+
+	/**
+	 * This member indicates that the operation failed, because the user
+	 * specified a value that is either invalid or not supported.
+	 */
+	SCI_FAILURE_INVALID_PARAMETER_VALUE,
+
+	/**
+	 * This value indicates that the operation failed, because the number
+	 * of messages (MSI-X) is not supported.
+	 */
+	SCI_FAILURE_UNSUPPORTED_MESSAGE_COUNT,
+
+	/**
+	 * This value indicates that the method failed due to a lack of
+	 * available NCQ tags.
+	 */
+	SCI_FAILURE_NO_NCQ_TAG_AVAILABLE,
+
+	/**
+	 * This value indicates that a protocol violation has occurred on the
+	 * link.
+	 */
+	SCI_FAILURE_PROTOCOL_VIOLATION,
+
+	/**
+	 * This value indicates a failure condition that retry may help to clear.
+	 */
+	SCI_FAILURE_RETRY_REQUIRED,
+
+	/**
+	 * This field indicates the retry limit was reached when a retry is attempted
+	 */
+	SCI_FAILURE_RETRY_LIMIT_REACHED,
+
+	/**
+	 * This member indicates the calling method was partly successful.
+	 * Mostly, this status is used when a LUN_RESET issued to an expander attached
+	 * STP device in READY NCQ substate needs to have RNC suspended/resumed
+	 * before posting TC.
+	 */
+	SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS,
+
+	/**
+	 * This field indicates an illegal phy connection based on the routing attribute
+	 * of both expander phy attached to each other.
+	 */
+	SCI_FAILURE_ILLEGAL_ROUTING_ATTRIBUTE_CONFIGURATION,
+
+	/**
+	 * This field indicates a CONFIG ROUTE INFO command has a response with function result
+	 * INDEX DOES NOT EXIST, usually means exceeding max route index.
+	 */
+	SCI_FAILURE_EXCEED_MAX_ROUTE_INDEX,
+
+	/**
+	 * This value indicates that an unsupported PCI device ID has been
+	 * specified.  This indicates that attempts to invoke
+	 * sci_library_allocate_controller() will fail.
+	 */
+	SCI_FAILURE_UNSUPPORTED_PCI_DEVICE_ID
+
+};
+
+/**
+ * enum sci_io_status - This enumeration depicts all of the possible IO
+ *    completion status values.  Each value in this enumeration maps directly
+ *    to a value in the enum sci_status enumeration.  Please refer to that
+ *    enumeration for detailed comments concerning what the status represents.
+ *
+ * Add the API to retrieve the SCU status from the core. Check to see that the
+ * following status are properly handled: - SCI_IO_FAILURE_UNSUPPORTED_PROTOCOL
+ * - SCI_IO_FAILURE_INVALID_IO_TAG
+ */
+enum sci_io_status {
+	SCI_IO_SUCCESS                         = SCI_SUCCESS,
+	SCI_IO_FAILURE                         = SCI_FAILURE,
+	SCI_IO_SUCCESS_COMPLETE_BEFORE_START   = SCI_SUCCESS_IO_COMPLETE_BEFORE_START,
+	SCI_IO_SUCCESS_IO_DONE_EARLY           = SCI_SUCCESS_IO_DONE_EARLY,
+	SCI_IO_FAILURE_INVALID_STATE           = SCI_FAILURE_INVALID_STATE,
+	SCI_IO_FAILURE_INSUFFICIENT_RESOURCES  = SCI_FAILURE_INSUFFICIENT_RESOURCES,
+	SCI_IO_FAILURE_UNSUPPORTED_PROTOCOL    = SCI_FAILURE_UNSUPPORTED_PROTOCOL,
+	SCI_IO_FAILURE_RESPONSE_VALID          = SCI_FAILURE_IO_RESPONSE_VALID,
+	SCI_IO_FAILURE_CONTROLLER_SPECIFIC_ERR = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR,
+	SCI_IO_FAILURE_TERMINATED              = SCI_FAILURE_IO_TERMINATED,
+	SCI_IO_FAILURE_REQUIRES_SCSI_ABORT     = SCI_FAILURE_IO_REQUIRES_SCSI_ABORT,
+	SCI_IO_FAILURE_INVALID_PARAMETER_VALUE = SCI_FAILURE_INVALID_PARAMETER_VALUE,
+	SCI_IO_FAILURE_NO_NCQ_TAG_AVAILABLE    = SCI_FAILURE_NO_NCQ_TAG_AVAILABLE,
+	SCI_IO_FAILURE_PROTOCOL_VIOLATION      = SCI_FAILURE_PROTOCOL_VIOLATION,
+
+	SCI_IO_FAILURE_REMOTE_DEVICE_RESET_REQUIRED = SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED,
+
+	SCI_IO_FAILURE_RETRY_REQUIRED      = SCI_FAILURE_RETRY_REQUIRED,
+	SCI_IO_FAILURE_RETRY_LIMIT_REACHED = SCI_FAILURE_RETRY_LIMIT_REACHED,
+	SCI_IO_FAILURE_INVALID_REMOTE_DEVICE = SCI_FAILURE_INVALID_REMOTE_DEVICE
+};
+
+/**
+ * enum sci_task_status - This enumeration depicts all of the possible task
+ *    completion status values.  Each value in this enumeration maps directly
+ *    to a value in the enum sci_status enumeration.  Please refer to that
+ *    enumeration for detailed comments concerning what the status represents.
+ *
+ * Check to see that the following status are properly handled:
+ */
+enum sci_task_status {
+	SCI_TASK_SUCCESS                         = SCI_SUCCESS,
+	SCI_TASK_FAILURE                         = SCI_FAILURE,
+	SCI_TASK_FAILURE_INVALID_STATE           = SCI_FAILURE_INVALID_STATE,
+	SCI_TASK_FAILURE_INSUFFICIENT_RESOURCES  = SCI_FAILURE_INSUFFICIENT_RESOURCES,
+	SCI_TASK_FAILURE_UNSUPPORTED_PROTOCOL    = SCI_FAILURE_UNSUPPORTED_PROTOCOL,
+	SCI_TASK_FAILURE_INVALID_TAG             = SCI_FAILURE_INVALID_IO_TAG,
+	SCI_TASK_FAILURE_RESPONSE_VALID          = SCI_FAILURE_IO_RESPONSE_VALID,
+	SCI_TASK_FAILURE_CONTROLLER_SPECIFIC_ERR = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR,
+	SCI_TASK_FAILURE_TERMINATED              = SCI_FAILURE_IO_TERMINATED,
+	SCI_TASK_FAILURE_INVALID_PARAMETER_VALUE = SCI_FAILURE_INVALID_PARAMETER_VALUE,
+
+	SCI_TASK_FAILURE_REMOTE_DEVICE_RESET_REQUIRED = SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED,
+	SCI_TASK_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS = SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS
+
+};
+
+/**
+ * sci_swab32_cpy - convert between scsi and scu-hardware byte format
+ * @dest: receive the 4-byte endian swapped version of src
+ * @src: word aligned source buffer
+ *
+ * scu hardware handles SSP/SMP control, response, and unidentified
+ * frames in "big endian dword" order.  Regardless of host endian this
+ * is always a swab32()-per-dword conversion of the standard definition,
+ * i.e. single byte fields swapped and multi-byte fields in little-
+ * endian
+ */
+static inline void sci_swab32_cpy(void *_dest, void *_src, ssize_t word_cnt)
+{
+	u32 *dest = _dest, *src = _src;
+
+	while (--word_cnt >= 0)
+		dest[word_cnt] = swab32(src[word_cnt]);
+}
+
+extern unsigned char no_outbound_task_to;
+extern u16 ssp_max_occ_to;
+extern u16 stp_max_occ_to;
+extern u16 ssp_inactive_to;
+extern u16 stp_inactive_to;
+extern unsigned char phy_gen;
+extern unsigned char max_concurr_spinup;
+
+irqreturn_t isci_msix_isr(int vec, void *data);
+irqreturn_t isci_intx_isr(int vec, void *data);
+irqreturn_t isci_error_isr(int vec, void *data);
+
+/*
+ * Each timer is associated with a cancellation flag that is set when
+ * del_timer() is called and checked in the timer callback function. This
+ * is needed since del_timer_sync() cannot be called with sci_lock held.
+ * For deinit however, del_timer_sync() is used without holding the lock.
+ */
+struct sci_timer {
+	struct timer_list	timer;
+	bool			cancel;
+};
+
+static inline
+void sci_init_timer(struct sci_timer *tmr, void (*fn)(unsigned long))
+{
+	tmr->timer.function = fn;
+	tmr->timer.data = (unsigned long) tmr;
+	tmr->cancel = 0;
+	init_timer(&tmr->timer);
+}
+
+static inline void sci_mod_timer(struct sci_timer *tmr, unsigned long msec)
+{
+	tmr->cancel = 0;
+	mod_timer(&tmr->timer, jiffies + msecs_to_jiffies(msec));
+}
+
+static inline void sci_del_timer(struct sci_timer *tmr)
+{
+	tmr->cancel = 1;
+	del_timer(&tmr->timer);
+}
+
+struct sci_base_state_machine {
+	const struct sci_base_state *state_table;
+	u32 initial_state_id;
+	u32 current_state_id;
+	u32 previous_state_id;
+};
+
+typedef void (*sci_state_transition_t)(struct sci_base_state_machine *sm);
+
+struct sci_base_state {
+	sci_state_transition_t enter_state;	/* Called on state entry */
+	sci_state_transition_t exit_state;	/* Called on state exit */
+};
+
+extern void sci_init_sm(struct sci_base_state_machine *sm,
+			const struct sci_base_state *state_table,
+			u32 initial_state);
+extern void sci_change_state(struct sci_base_state_machine *sm, u32 next_state);
+#endif  /* __ISCI_H__ */
diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c
new file mode 100644
index 0000000..79313a7
--- /dev/null
+++ b/drivers/scsi/isci/phy.c
@@ -0,0 +1,1312 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "isci.h"
+#include "host.h"
+#include "phy.h"
+#include "scu_event_codes.h"
+#include "probe_roms.h"
+
+/* Maximum arbitration wait time in micro-seconds */
+#define SCIC_SDS_PHY_MAX_ARBITRATION_WAIT_TIME  (700)
+
+enum sas_linkrate sci_phy_linkrate(struct isci_phy *iphy)
+{
+	return iphy->max_negotiated_speed;
+}
+
+static enum sci_status
+sci_phy_transport_layer_initialization(struct isci_phy *iphy,
+				       struct scu_transport_layer_registers __iomem *reg)
+{
+	u32 tl_control;
+
+	iphy->transport_layer_registers = reg;
+
+	writel(SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX,
+		&iphy->transport_layer_registers->stp_rni);
+
+	/*
+	 * Hardware team recommends that we enable the STP prefetch for all
+	 * transports
+	 */
+	tl_control = readl(&iphy->transport_layer_registers->control);
+	tl_control |= SCU_TLCR_GEN_BIT(STP_WRITE_DATA_PREFETCH);
+	writel(tl_control, &iphy->transport_layer_registers->control);
+
+	return SCI_SUCCESS;
+}
+
+static enum sci_status
+sci_phy_link_layer_initialization(struct isci_phy *iphy,
+				  struct scu_link_layer_registers __iomem *reg)
+{
+	struct isci_host *ihost = iphy->owning_port->owning_controller;
+	int phy_idx = iphy->phy_index;
+	struct sci_phy_user_params *phy_user = &ihost->user_parameters.phys[phy_idx];
+	struct sci_phy_oem_params *phy_oem =
+		&ihost->oem_parameters.phys[phy_idx];
+	u32 phy_configuration;
+	struct sci_phy_cap phy_cap;
+	u32 parity_check = 0;
+	u32 parity_count = 0;
+	u32 llctl, link_rate;
+	u32 clksm_value = 0;
+
+	iphy->link_layer_registers = reg;
+
+	/* Set our IDENTIFY frame data */
+	#define SCI_END_DEVICE 0x01
+
+	writel(SCU_SAS_TIID_GEN_BIT(SMP_INITIATOR) |
+	       SCU_SAS_TIID_GEN_BIT(SSP_INITIATOR) |
+	       SCU_SAS_TIID_GEN_BIT(STP_INITIATOR) |
+	       SCU_SAS_TIID_GEN_BIT(DA_SATA_HOST) |
+	       SCU_SAS_TIID_GEN_VAL(DEVICE_TYPE, SCI_END_DEVICE),
+	       &iphy->link_layer_registers->transmit_identification);
+
+	/* Write the device SAS Address */
+	writel(0xFEDCBA98,
+	       &iphy->link_layer_registers->sas_device_name_high);
+	writel(phy_idx, &iphy->link_layer_registers->sas_device_name_low);
+
+	/* Write the source SAS Address */
+	writel(phy_oem->sas_address.high,
+		&iphy->link_layer_registers->source_sas_address_high);
+	writel(phy_oem->sas_address.low,
+		&iphy->link_layer_registers->source_sas_address_low);
+
+	/* Clear and Set the PHY Identifier */
+	writel(0, &iphy->link_layer_registers->identify_frame_phy_id);
+	writel(SCU_SAS_TIPID_GEN_VALUE(ID, phy_idx),
+		&iphy->link_layer_registers->identify_frame_phy_id);
+
+	/* Change the initial state of the phy configuration register */
+	phy_configuration =
+		readl(&iphy->link_layer_registers->phy_configuration);
+
+	/* Hold OOB state machine in reset */
+	phy_configuration |=  SCU_SAS_PCFG_GEN_BIT(OOB_RESET);
+	writel(phy_configuration,
+		&iphy->link_layer_registers->phy_configuration);
+
+	/* Configure the SNW capabilities */
+	phy_cap.all = 0;
+	phy_cap.start = 1;
+	phy_cap.gen3_no_ssc = 1;
+	phy_cap.gen2_no_ssc = 1;
+	phy_cap.gen1_no_ssc = 1;
+	if (ihost->oem_parameters.controller.do_enable_ssc == true) {
+		phy_cap.gen3_ssc = 1;
+		phy_cap.gen2_ssc = 1;
+		phy_cap.gen1_ssc = 1;
+	}
+
+	/*
+	 * The SAS specification indicates that the phy_capabilities that
+	 * are transmitted shall have an even parity.  Calculate the parity. */
+	parity_check = phy_cap.all;
+	while (parity_check != 0) {
+		if (parity_check & 0x1)
+			parity_count++;
+		parity_check >>= 1;
+	}
+
+	/*
+	 * If parity indicates there are an odd number of bits set, then
+	 * set the parity bit to 1 in the phy capabilities. */
+	if ((parity_count % 2) != 0)
+		phy_cap.parity = 1;
+
+	writel(phy_cap.all, &iphy->link_layer_registers->phy_capabilities);
+
+	/* Set the enable spinup period but disable the ability to send
+	 * notify enable spinup
+	 */
+	writel(SCU_ENSPINUP_GEN_VAL(COUNT,
+			phy_user->notify_enable_spin_up_insertion_frequency),
+		&iphy->link_layer_registers->notify_enable_spinup_control);
+
+	/* Write the ALIGN Insertion Ferequency for connected phy and
+	 * inpendent of connected state
+	 */
+	clksm_value = SCU_ALIGN_INSERTION_FREQUENCY_GEN_VAL(CONNECTED,
+			phy_user->in_connection_align_insertion_frequency);
+
+	clksm_value |= SCU_ALIGN_INSERTION_FREQUENCY_GEN_VAL(GENERAL,
+			phy_user->align_insertion_frequency);
+
+	writel(clksm_value, &iphy->link_layer_registers->clock_skew_management);
+
+	/* @todo Provide a way to write this register correctly */
+	writel(0x02108421,
+		&iphy->link_layer_registers->afe_lookup_table_control);
+
+	llctl = SCU_SAS_LLCTL_GEN_VAL(NO_OUTBOUND_TASK_TIMEOUT,
+		(u8)ihost->user_parameters.no_outbound_task_timeout);
+
+	switch (phy_user->max_speed_generation) {
+	case SCIC_SDS_PARM_GEN3_SPEED:
+		link_rate = SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN3;
+		break;
+	case SCIC_SDS_PARM_GEN2_SPEED:
+		link_rate = SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN2;
+		break;
+	default:
+		link_rate = SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN1;
+		break;
+	}
+	llctl |= SCU_SAS_LLCTL_GEN_VAL(MAX_LINK_RATE, link_rate);
+	writel(llctl, &iphy->link_layer_registers->link_layer_control);
+
+	if (is_a2(ihost->pdev)) {
+		/* Program the max ARB time for the PHY to 700us so we inter-operate with
+		 * the PMC expander which shuts down PHYs if the expander PHY generates too
+		 * many breaks.  This time value will guarantee that the initiator PHY will
+		 * generate the break.
+		 */
+		writel(SCIC_SDS_PHY_MAX_ARBITRATION_WAIT_TIME,
+			&iphy->link_layer_registers->maximum_arbitration_wait_timer_timeout);
+	}
+
+	/* Disable link layer hang detection, rely on the OS timeout for I/O timeouts. */
+	writel(0, &iphy->link_layer_registers->link_layer_hang_detection_timeout);
+
+	/* We can exit the initial state to the stopped state */
+	sci_change_state(&iphy->sm, SCI_PHY_STOPPED);
+
+	return SCI_SUCCESS;
+}
+
+static void phy_sata_timeout(unsigned long data)
+{
+	struct sci_timer *tmr = (struct sci_timer *)data;
+	struct isci_phy *iphy = container_of(tmr, typeof(*iphy), sata_timer);
+	struct isci_host *ihost = iphy->owning_port->owning_controller;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	if (tmr->cancel)
+		goto done;
+
+	dev_dbg(sciphy_to_dev(iphy),
+		 "%s: SCIC SDS Phy 0x%p did not receive signature fis before "
+		 "timeout.\n",
+		 __func__,
+		 iphy);
+
+	sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+done:
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
+
+/**
+ * This method returns the port currently containing this phy. If the phy is
+ *    currently contained by the dummy port, then the phy is considered to not
+ *    be part of a port.
+ * @sci_phy: This parameter specifies the phy for which to retrieve the
+ *    containing port.
+ *
+ * This method returns a handle to a port that contains the supplied phy.
+ * NULL This value is returned if the phy is not part of a real
+ * port (i.e. it's contained in the dummy port). !NULL All other
+ * values indicate a handle/pointer to the port containing the phy.
+ */
+struct isci_port *phy_get_non_dummy_port(struct isci_phy *iphy)
+{
+	struct isci_port *iport = iphy->owning_port;
+
+	if (iport->physical_port_index == SCIC_SDS_DUMMY_PORT)
+		return NULL;
+
+	return iphy->owning_port;
+}
+
+/**
+ * This method will assign a port to the phy object.
+ * @out]: iphy This parameter specifies the phy for which to assign a port
+ *    object.
+ *
+ *
+ */
+void sci_phy_set_port(
+	struct isci_phy *iphy,
+	struct isci_port *iport)
+{
+	iphy->owning_port = iport;
+
+	if (iphy->bcn_received_while_port_unassigned) {
+		iphy->bcn_received_while_port_unassigned = false;
+		sci_port_broadcast_change_received(iphy->owning_port, iphy);
+	}
+}
+
+enum sci_status sci_phy_initialize(struct isci_phy *iphy,
+				   struct scu_transport_layer_registers __iomem *tl,
+				   struct scu_link_layer_registers __iomem *ll)
+{
+	/* Perfrom the initialization of the TL hardware */
+	sci_phy_transport_layer_initialization(iphy, tl);
+
+	/* Perofrm the initialization of the PE hardware */
+	sci_phy_link_layer_initialization(iphy, ll);
+
+	/* There is nothing that needs to be done in this state just
+	 * transition to the stopped state
+	 */
+	sci_change_state(&iphy->sm, SCI_PHY_STOPPED);
+
+	return SCI_SUCCESS;
+}
+
+/**
+ * This method assigns the direct attached device ID for this phy.
+ *
+ * @iphy The phy for which the direct attached device id is to
+ *       be assigned.
+ * @device_id The direct attached device ID to assign to the phy.
+ *       This will either be the RNi for the device or an invalid RNi if there
+ *       is no current device assigned to the phy.
+ */
+void sci_phy_setup_transport(struct isci_phy *iphy, u32 device_id)
+{
+	u32 tl_control;
+
+	writel(device_id, &iphy->transport_layer_registers->stp_rni);
+
+	/*
+	 * The read should guarantee that the first write gets posted
+	 * before the next write
+	 */
+	tl_control = readl(&iphy->transport_layer_registers->control);
+	tl_control |= SCU_TLCR_GEN_BIT(CLEAR_TCI_NCQ_MAPPING_TABLE);
+	writel(tl_control, &iphy->transport_layer_registers->control);
+}
+
+static void sci_phy_suspend(struct isci_phy *iphy)
+{
+	u32 scu_sas_pcfg_value;
+
+	scu_sas_pcfg_value =
+		readl(&iphy->link_layer_registers->phy_configuration);
+	scu_sas_pcfg_value |= SCU_SAS_PCFG_GEN_BIT(SUSPEND_PROTOCOL_ENGINE);
+	writel(scu_sas_pcfg_value,
+		&iphy->link_layer_registers->phy_configuration);
+
+	sci_phy_setup_transport(iphy, SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX);
+}
+
+void sci_phy_resume(struct isci_phy *iphy)
+{
+	u32 scu_sas_pcfg_value;
+
+	scu_sas_pcfg_value =
+		readl(&iphy->link_layer_registers->phy_configuration);
+	scu_sas_pcfg_value &= ~SCU_SAS_PCFG_GEN_BIT(SUSPEND_PROTOCOL_ENGINE);
+	writel(scu_sas_pcfg_value,
+		&iphy->link_layer_registers->phy_configuration);
+}
+
+void sci_phy_get_sas_address(struct isci_phy *iphy, struct sci_sas_address *sas)
+{
+	sas->high = readl(&iphy->link_layer_registers->source_sas_address_high);
+	sas->low = readl(&iphy->link_layer_registers->source_sas_address_low);
+}
+
+void sci_phy_get_attached_sas_address(struct isci_phy *iphy, struct sci_sas_address *sas)
+{
+	struct sas_identify_frame *iaf;
+
+	iaf = &iphy->frame_rcvd.iaf;
+	memcpy(sas, iaf->sas_addr, SAS_ADDR_SIZE);
+}
+
+void sci_phy_get_protocols(struct isci_phy *iphy, struct sci_phy_proto *proto)
+{
+	proto->all = readl(&iphy->link_layer_registers->transmit_identification);
+}
+
+enum sci_status sci_phy_start(struct isci_phy *iphy)
+{
+	enum sci_phy_states state = iphy->sm.current_state_id;
+
+	if (state != SCI_PHY_STOPPED) {
+		dev_dbg(sciphy_to_dev(iphy),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+	return SCI_SUCCESS;
+}
+
+enum sci_status sci_phy_stop(struct isci_phy *iphy)
+{
+	enum sci_phy_states state = iphy->sm.current_state_id;
+
+	switch (state) {
+	case SCI_PHY_SUB_INITIAL:
+	case SCI_PHY_SUB_AWAIT_OSSP_EN:
+	case SCI_PHY_SUB_AWAIT_SAS_SPEED_EN:
+	case SCI_PHY_SUB_AWAIT_SAS_POWER:
+	case SCI_PHY_SUB_AWAIT_SATA_POWER:
+	case SCI_PHY_SUB_AWAIT_SATA_PHY_EN:
+	case SCI_PHY_SUB_AWAIT_SATA_SPEED_EN:
+	case SCI_PHY_SUB_AWAIT_SIG_FIS_UF:
+	case SCI_PHY_SUB_FINAL:
+	case SCI_PHY_READY:
+		break;
+	default:
+		dev_dbg(sciphy_to_dev(iphy),
+			"%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	sci_change_state(&iphy->sm, SCI_PHY_STOPPED);
+	return SCI_SUCCESS;
+}
+
+enum sci_status sci_phy_reset(struct isci_phy *iphy)
+{
+	enum sci_phy_states state = iphy->sm.current_state_id;
+
+	if (state != SCI_PHY_READY) {
+		dev_dbg(sciphy_to_dev(iphy),
+			"%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	sci_change_state(&iphy->sm, SCI_PHY_RESETTING);
+	return SCI_SUCCESS;
+}
+
+enum sci_status sci_phy_consume_power_handler(struct isci_phy *iphy)
+{
+	enum sci_phy_states state = iphy->sm.current_state_id;
+
+	switch (state) {
+	case SCI_PHY_SUB_AWAIT_SAS_POWER: {
+		u32 enable_spinup;
+
+		enable_spinup = readl(&iphy->link_layer_registers->notify_enable_spinup_control);
+		enable_spinup |= SCU_ENSPINUP_GEN_BIT(ENABLE);
+		writel(enable_spinup, &iphy->link_layer_registers->notify_enable_spinup_control);
+
+		/* Change state to the final state this substate machine has run to completion */
+		sci_change_state(&iphy->sm, SCI_PHY_SUB_FINAL);
+
+		return SCI_SUCCESS;
+	}
+	case SCI_PHY_SUB_AWAIT_SATA_POWER: {
+		u32 scu_sas_pcfg_value;
+
+		/* Release the spinup hold state and reset the OOB state machine */
+		scu_sas_pcfg_value =
+			readl(&iphy->link_layer_registers->phy_configuration);
+		scu_sas_pcfg_value &=
+			~(SCU_SAS_PCFG_GEN_BIT(SATA_SPINUP_HOLD) | SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE));
+		scu_sas_pcfg_value |= SCU_SAS_PCFG_GEN_BIT(OOB_RESET);
+		writel(scu_sas_pcfg_value,
+			&iphy->link_layer_registers->phy_configuration);
+
+		/* Now restart the OOB operation */
+		scu_sas_pcfg_value &= ~SCU_SAS_PCFG_GEN_BIT(OOB_RESET);
+		scu_sas_pcfg_value |= SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE);
+		writel(scu_sas_pcfg_value,
+			&iphy->link_layer_registers->phy_configuration);
+
+		/* Change state to the final state this substate machine has run to completion */
+		sci_change_state(&iphy->sm, SCI_PHY_SUB_AWAIT_SATA_PHY_EN);
+
+		return SCI_SUCCESS;
+	}
+	default:
+		dev_dbg(sciphy_to_dev(iphy),
+			"%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+static void sci_phy_start_sas_link_training(struct isci_phy *iphy)
+{
+	/* continue the link training for the phy as if it were a SAS PHY
+	 * instead of a SATA PHY. This is done because the completion queue had a SAS
+	 * PHY DETECTED event when the state machine was expecting a SATA PHY event.
+	 */
+	u32 phy_control;
+
+	phy_control = readl(&iphy->link_layer_registers->phy_configuration);
+	phy_control |= SCU_SAS_PCFG_GEN_BIT(SATA_SPINUP_HOLD);
+	writel(phy_control,
+	       &iphy->link_layer_registers->phy_configuration);
+
+	sci_change_state(&iphy->sm, SCI_PHY_SUB_AWAIT_SAS_SPEED_EN);
+
+	iphy->protocol = SCIC_SDS_PHY_PROTOCOL_SAS;
+}
+
+static void sci_phy_start_sata_link_training(struct isci_phy *iphy)
+{
+	/* This method continues the link training for the phy as if it were a SATA PHY
+	 * instead of a SAS PHY.  This is done because the completion queue had a SATA
+	 * SPINUP HOLD event when the state machine was expecting a SAS PHY event. none
+	 */
+	sci_change_state(&iphy->sm, SCI_PHY_SUB_AWAIT_SATA_POWER);
+
+	iphy->protocol = SCIC_SDS_PHY_PROTOCOL_SATA;
+}
+
+/**
+ * sci_phy_complete_link_training - perform processing common to
+ *    all protocols upon completion of link training.
+ * @sci_phy: This parameter specifies the phy object for which link training
+ *    has completed.
+ * @max_link_rate: This parameter specifies the maximum link rate to be
+ *    associated with this phy.
+ * @next_state: This parameter specifies the next state for the phy's starting
+ *    sub-state machine.
+ *
+ */
+static void sci_phy_complete_link_training(struct isci_phy *iphy,
+					   enum sas_linkrate max_link_rate,
+					   u32 next_state)
+{
+	iphy->max_negotiated_speed = max_link_rate;
+
+	sci_change_state(&iphy->sm, next_state);
+}
+
+enum sci_status sci_phy_event_handler(struct isci_phy *iphy, u32 event_code)
+{
+	enum sci_phy_states state = iphy->sm.current_state_id;
+
+	switch (state) {
+	case SCI_PHY_SUB_AWAIT_OSSP_EN:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_SAS_PHY_DETECTED:
+			sci_phy_start_sas_link_training(iphy);
+			iphy->is_in_link_training = true;
+			break;
+		case SCU_EVENT_SATA_SPINUP_HOLD:
+			sci_phy_start_sata_link_training(iphy);
+			iphy->is_in_link_training = true;
+			break;
+		default:
+			dev_dbg(sciphy_to_dev(iphy),
+				"%s: PHY starting substate machine received "
+				"unexpected event_code %x\n",
+				__func__,
+				event_code);
+			return SCI_FAILURE;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_SUB_AWAIT_SAS_SPEED_EN:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_SAS_PHY_DETECTED:
+			/*
+			 * Why is this being reported again by the controller?
+			 * We would re-enter this state so just stay here */
+			break;
+		case SCU_EVENT_SAS_15:
+		case SCU_EVENT_SAS_15_SSC:
+			sci_phy_complete_link_training(iphy, SAS_LINK_RATE_1_5_GBPS,
+						       SCI_PHY_SUB_AWAIT_IAF_UF);
+			break;
+		case SCU_EVENT_SAS_30:
+		case SCU_EVENT_SAS_30_SSC:
+			sci_phy_complete_link_training(iphy, SAS_LINK_RATE_3_0_GBPS,
+						       SCI_PHY_SUB_AWAIT_IAF_UF);
+			break;
+		case SCU_EVENT_SAS_60:
+		case SCU_EVENT_SAS_60_SSC:
+			sci_phy_complete_link_training(iphy, SAS_LINK_RATE_6_0_GBPS,
+						       SCI_PHY_SUB_AWAIT_IAF_UF);
+			break;
+		case SCU_EVENT_SATA_SPINUP_HOLD:
+			/*
+			 * We were doing SAS PHY link training and received a SATA PHY event
+			 * continue OOB/SN as if this were a SATA PHY */
+			sci_phy_start_sata_link_training(iphy);
+			break;
+		case SCU_EVENT_LINK_FAILURE:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: PHY starting substate machine received "
+				 "unexpected event_code %x\n",
+				 __func__, event_code);
+
+			return SCI_FAILURE;
+			break;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_SUB_AWAIT_IAF_UF:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_SAS_PHY_DETECTED:
+			/* Backup the state machine */
+			sci_phy_start_sas_link_training(iphy);
+			break;
+		case SCU_EVENT_SATA_SPINUP_HOLD:
+			/* We were doing SAS PHY link training and received a
+			 * SATA PHY event continue OOB/SN as if this were a
+			 * SATA PHY
+			 */
+			sci_phy_start_sata_link_training(iphy);
+			break;
+		case SCU_EVENT_RECEIVED_IDENTIFY_TIMEOUT:
+		case SCU_EVENT_LINK_FAILURE:
+		case SCU_EVENT_HARD_RESET_RECEIVED:
+			/* Start the oob/sn state machine over again */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: PHY starting substate machine received "
+				 "unexpected event_code %x\n",
+				 __func__, event_code);
+			return SCI_FAILURE;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_SUB_AWAIT_SAS_POWER:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_LINK_FAILURE:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				"%s: PHY starting substate machine received unexpected "
+				"event_code %x\n",
+				__func__,
+				event_code);
+			return SCI_FAILURE;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_SUB_AWAIT_SATA_POWER:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_LINK_FAILURE:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		case SCU_EVENT_SATA_SPINUP_HOLD:
+			/* These events are received every 10ms and are
+			 * expected while in this state
+			 */
+			break;
+
+		case SCU_EVENT_SAS_PHY_DETECTED:
+			/* There has been a change in the phy type before OOB/SN for the
+			 * SATA finished start down the SAS link traning path.
+			 */
+			sci_phy_start_sas_link_training(iphy);
+			break;
+
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: PHY starting substate machine received "
+				 "unexpected event_code %x\n",
+				 __func__, event_code);
+
+			return SCI_FAILURE;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_SUB_AWAIT_SATA_PHY_EN:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_LINK_FAILURE:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		case SCU_EVENT_SATA_SPINUP_HOLD:
+			/* These events might be received since we dont know how many may be in
+			 * the completion queue while waiting for power
+			 */
+			break;
+		case SCU_EVENT_SATA_PHY_DETECTED:
+			iphy->protocol = SCIC_SDS_PHY_PROTOCOL_SATA;
+
+			/* We have received the SATA PHY notification change state */
+			sci_change_state(&iphy->sm, SCI_PHY_SUB_AWAIT_SATA_SPEED_EN);
+			break;
+		case SCU_EVENT_SAS_PHY_DETECTED:
+			/* There has been a change in the phy type before OOB/SN for the
+			 * SATA finished start down the SAS link traning path.
+			 */
+			sci_phy_start_sas_link_training(iphy);
+			break;
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: PHY starting substate machine received "
+				 "unexpected event_code %x\n",
+				 __func__,
+				 event_code);
+
+			return SCI_FAILURE;;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_SUB_AWAIT_SATA_SPEED_EN:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_SATA_PHY_DETECTED:
+			/*
+			 * The hardware reports multiple SATA PHY detected events
+			 * ignore the extras */
+			break;
+		case SCU_EVENT_SATA_15:
+		case SCU_EVENT_SATA_15_SSC:
+			sci_phy_complete_link_training(iphy, SAS_LINK_RATE_1_5_GBPS,
+						       SCI_PHY_SUB_AWAIT_SIG_FIS_UF);
+			break;
+		case SCU_EVENT_SATA_30:
+		case SCU_EVENT_SATA_30_SSC:
+			sci_phy_complete_link_training(iphy, SAS_LINK_RATE_3_0_GBPS,
+						       SCI_PHY_SUB_AWAIT_SIG_FIS_UF);
+			break;
+		case SCU_EVENT_SATA_60:
+		case SCU_EVENT_SATA_60_SSC:
+			sci_phy_complete_link_training(iphy, SAS_LINK_RATE_6_0_GBPS,
+						       SCI_PHY_SUB_AWAIT_SIG_FIS_UF);
+			break;
+		case SCU_EVENT_LINK_FAILURE:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		case SCU_EVENT_SAS_PHY_DETECTED:
+			/*
+			 * There has been a change in the phy type before OOB/SN for the
+			 * SATA finished start down the SAS link traning path. */
+			sci_phy_start_sas_link_training(iphy);
+			break;
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: PHY starting substate machine received "
+				 "unexpected event_code %x\n",
+				 __func__, event_code);
+
+			return SCI_FAILURE;
+		}
+
+		return SCI_SUCCESS;
+	case SCI_PHY_SUB_AWAIT_SIG_FIS_UF:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_SATA_PHY_DETECTED:
+			/* Backup the state machine */
+			sci_change_state(&iphy->sm, SCI_PHY_SUB_AWAIT_SATA_SPEED_EN);
+			break;
+
+		case SCU_EVENT_LINK_FAILURE:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: PHY starting substate machine received "
+				 "unexpected event_code %x\n",
+				 __func__,
+				 event_code);
+
+			return SCI_FAILURE;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_READY:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_LINK_FAILURE:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		case SCU_EVENT_BROADCAST_CHANGE:
+			/* Broadcast change received. Notify the port. */
+			if (phy_get_non_dummy_port(iphy) != NULL)
+				sci_port_broadcast_change_received(iphy->owning_port, iphy);
+			else
+				iphy->bcn_received_while_port_unassigned = true;
+			break;
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%sP SCIC PHY 0x%p ready state machine received "
+				 "unexpected event_code %x\n",
+				 __func__, iphy, event_code);
+			return SCI_FAILURE_INVALID_STATE;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_RESETTING:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_HARD_RESET_TRANSMITTED:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: SCIC PHY 0x%p resetting state machine received "
+				 "unexpected event_code %x\n",
+				 __func__, iphy, event_code);
+
+			return SCI_FAILURE_INVALID_STATE;
+			break;
+		}
+		return SCI_SUCCESS;
+	default:
+		dev_dbg(sciphy_to_dev(iphy),
+			"%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+enum sci_status sci_phy_frame_handler(struct isci_phy *iphy, u32 frame_index)
+{
+	enum sci_phy_states state = iphy->sm.current_state_id;
+	struct isci_host *ihost = iphy->owning_port->owning_controller;
+	enum sci_status result;
+	unsigned long flags;
+
+	switch (state) {
+	case SCI_PHY_SUB_AWAIT_IAF_UF: {
+		u32 *frame_words;
+		struct sas_identify_frame iaf;
+
+		result = sci_unsolicited_frame_control_get_header(&ihost->uf_control,
+								  frame_index,
+								  (void **)&frame_words);
+
+		if (result != SCI_SUCCESS)
+			return result;
+
+		sci_swab32_cpy(&iaf, frame_words, sizeof(iaf) / sizeof(u32));
+		if (iaf.frame_type == 0) {
+			u32 state;
+
+			spin_lock_irqsave(&iphy->sas_phy.frame_rcvd_lock, flags);
+			memcpy(&iphy->frame_rcvd.iaf, &iaf, sizeof(iaf));
+			spin_unlock_irqrestore(&iphy->sas_phy.frame_rcvd_lock, flags);
+			if (iaf.smp_tport) {
+				/* We got the IAF for an expander PHY go to the final
+				 * state since there are no power requirements for
+				 * expander phys.
+				 */
+				state = SCI_PHY_SUB_FINAL;
+			} else {
+				/* We got the IAF we can now go to the await spinup
+				 * semaphore state
+				 */
+				state = SCI_PHY_SUB_AWAIT_SAS_POWER;
+			}
+			sci_change_state(&iphy->sm, state);
+			result = SCI_SUCCESS;
+		} else
+			dev_warn(sciphy_to_dev(iphy),
+				"%s: PHY starting substate machine received "
+				"unexpected frame id %x\n",
+				__func__, frame_index);
+
+		sci_controller_release_frame(ihost, frame_index);
+		return result;
+	}
+	case SCI_PHY_SUB_AWAIT_SIG_FIS_UF: {
+		struct dev_to_host_fis *frame_header;
+		u32 *fis_frame_data;
+
+		result = sci_unsolicited_frame_control_get_header(&ihost->uf_control,
+								  frame_index,
+								  (void **)&frame_header);
+
+		if (result != SCI_SUCCESS)
+			return result;
+
+		if ((frame_header->fis_type == FIS_REGD2H) &&
+		    !(frame_header->status & ATA_BUSY)) {
+			sci_unsolicited_frame_control_get_buffer(&ihost->uf_control,
+								 frame_index,
+								 (void **)&fis_frame_data);
+
+			spin_lock_irqsave(&iphy->sas_phy.frame_rcvd_lock, flags);
+			sci_controller_copy_sata_response(&iphy->frame_rcvd.fis,
+							  frame_header,
+							  fis_frame_data);
+			spin_unlock_irqrestore(&iphy->sas_phy.frame_rcvd_lock, flags);
+
+			/* got IAF we can now go to the await spinup semaphore state */
+			sci_change_state(&iphy->sm, SCI_PHY_SUB_FINAL);
+
+			result = SCI_SUCCESS;
+		} else
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: PHY starting substate machine received "
+				 "unexpected frame id %x\n",
+				 __func__, frame_index);
+
+		/* Regardless of the result we are done with this frame with it */
+		sci_controller_release_frame(ihost, frame_index);
+
+		return result;
+	}
+	default:
+		dev_dbg(sciphy_to_dev(iphy),
+			"%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+}
+
+static void sci_phy_starting_initial_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	/* This is just an temporary state go off to the starting state */
+	sci_change_state(&iphy->sm, SCI_PHY_SUB_AWAIT_OSSP_EN);
+}
+
+static void sci_phy_starting_await_sas_power_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+	struct isci_host *ihost = iphy->owning_port->owning_controller;
+
+	sci_controller_power_control_queue_insert(ihost, iphy);
+}
+
+static void sci_phy_starting_await_sas_power_substate_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+	struct isci_host *ihost = iphy->owning_port->owning_controller;
+
+	sci_controller_power_control_queue_remove(ihost, iphy);
+}
+
+static void sci_phy_starting_await_sata_power_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+	struct isci_host *ihost = iphy->owning_port->owning_controller;
+
+	sci_controller_power_control_queue_insert(ihost, iphy);
+}
+
+static void sci_phy_starting_await_sata_power_substate_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+	struct isci_host *ihost = iphy->owning_port->owning_controller;
+
+	sci_controller_power_control_queue_remove(ihost, iphy);
+}
+
+static void sci_phy_starting_await_sata_phy_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	sci_mod_timer(&iphy->sata_timer, SCIC_SDS_SATA_LINK_TRAINING_TIMEOUT);
+}
+
+static void sci_phy_starting_await_sata_phy_substate_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	sci_del_timer(&iphy->sata_timer);
+}
+
+static void sci_phy_starting_await_sata_speed_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	sci_mod_timer(&iphy->sata_timer, SCIC_SDS_SATA_LINK_TRAINING_TIMEOUT);
+}
+
+static void sci_phy_starting_await_sata_speed_substate_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	sci_del_timer(&iphy->sata_timer);
+}
+
+static void sci_phy_starting_await_sig_fis_uf_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	if (sci_port_link_detected(iphy->owning_port, iphy)) {
+
+		/*
+		 * Clear the PE suspend condition so we can actually
+		 * receive SIG FIS
+		 * The hardware will not respond to the XRDY until the PE
+		 * suspend condition is cleared.
+		 */
+		sci_phy_resume(iphy);
+
+		sci_mod_timer(&iphy->sata_timer,
+			      SCIC_SDS_SIGNATURE_FIS_TIMEOUT);
+	} else
+		iphy->is_in_link_training = false;
+}
+
+static void sci_phy_starting_await_sig_fis_uf_substate_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	sci_del_timer(&iphy->sata_timer);
+}
+
+static void sci_phy_starting_final_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	/* State machine has run to completion so exit out and change
+	 * the base state machine to the ready state
+	 */
+	sci_change_state(&iphy->sm, SCI_PHY_READY);
+}
+
+/**
+ *
+ * @sci_phy: This is the struct isci_phy object to stop.
+ *
+ * This method will stop the struct isci_phy object. This does not reset the
+ * protocol engine it just suspends it and places it in a state where it will
+ * not cause the end device to power up. none
+ */
+static void scu_link_layer_stop_protocol_engine(
+	struct isci_phy *iphy)
+{
+	u32 scu_sas_pcfg_value;
+	u32 enable_spinup_value;
+
+	/* Suspend the protocol engine and place it in a sata spinup hold state */
+	scu_sas_pcfg_value =
+		readl(&iphy->link_layer_registers->phy_configuration);
+	scu_sas_pcfg_value |=
+		(SCU_SAS_PCFG_GEN_BIT(OOB_RESET) |
+		 SCU_SAS_PCFG_GEN_BIT(SUSPEND_PROTOCOL_ENGINE) |
+		 SCU_SAS_PCFG_GEN_BIT(SATA_SPINUP_HOLD));
+	writel(scu_sas_pcfg_value,
+	       &iphy->link_layer_registers->phy_configuration);
+
+	/* Disable the notify enable spinup primitives */
+	enable_spinup_value = readl(&iphy->link_layer_registers->notify_enable_spinup_control);
+	enable_spinup_value &= ~SCU_ENSPINUP_GEN_BIT(ENABLE);
+	writel(enable_spinup_value, &iphy->link_layer_registers->notify_enable_spinup_control);
+}
+
+/**
+ *
+ *
+ * This method will start the OOB/SN state machine for this struct isci_phy object.
+ */
+static void scu_link_layer_start_oob(
+	struct isci_phy *iphy)
+{
+	u32 scu_sas_pcfg_value;
+
+	scu_sas_pcfg_value =
+		readl(&iphy->link_layer_registers->phy_configuration);
+	scu_sas_pcfg_value |= SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE);
+	scu_sas_pcfg_value &=
+		~(SCU_SAS_PCFG_GEN_BIT(OOB_RESET) |
+		SCU_SAS_PCFG_GEN_BIT(HARD_RESET));
+	writel(scu_sas_pcfg_value,
+	       &iphy->link_layer_registers->phy_configuration);
+}
+
+/**
+ *
+ *
+ * This method will transmit a hard reset request on the specified phy. The SCU
+ * hardware requires that we reset the OOB state machine and set the hard reset
+ * bit in the phy configuration register. We then must start OOB over with the
+ * hard reset bit set.
+ */
+static void scu_link_layer_tx_hard_reset(
+	struct isci_phy *iphy)
+{
+	u32 phy_configuration_value;
+
+	/*
+	 * SAS Phys must wait for the HARD_RESET_TX event notification to transition
+	 * to the starting state. */
+	phy_configuration_value =
+		readl(&iphy->link_layer_registers->phy_configuration);
+	phy_configuration_value |=
+		(SCU_SAS_PCFG_GEN_BIT(HARD_RESET) |
+		 SCU_SAS_PCFG_GEN_BIT(OOB_RESET));
+	writel(phy_configuration_value,
+	       &iphy->link_layer_registers->phy_configuration);
+
+	/* Now take the OOB state machine out of reset */
+	phy_configuration_value |= SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE);
+	phy_configuration_value &= ~SCU_SAS_PCFG_GEN_BIT(OOB_RESET);
+	writel(phy_configuration_value,
+	       &iphy->link_layer_registers->phy_configuration);
+}
+
+static void sci_phy_stopped_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+	struct isci_port *iport = iphy->owning_port;
+	struct isci_host *ihost = iport->owning_controller;
+
+	/*
+	 * @todo We need to get to the controller to place this PE in a
+	 * reset state
+	 */
+	sci_del_timer(&iphy->sata_timer);
+
+	scu_link_layer_stop_protocol_engine(iphy);
+
+	if (iphy->sm.previous_state_id != SCI_PHY_INITIAL)
+		sci_controller_link_down(ihost, phy_get_non_dummy_port(iphy), iphy);
+}
+
+static void sci_phy_starting_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+	struct isci_port *iport = iphy->owning_port;
+	struct isci_host *ihost = iport->owning_controller;
+
+	scu_link_layer_stop_protocol_engine(iphy);
+	scu_link_layer_start_oob(iphy);
+
+	/* We don't know what kind of phy we are going to be just yet */
+	iphy->protocol = SCIC_SDS_PHY_PROTOCOL_UNKNOWN;
+	iphy->bcn_received_while_port_unassigned = false;
+
+	if (iphy->sm.previous_state_id == SCI_PHY_READY)
+		sci_controller_link_down(ihost, phy_get_non_dummy_port(iphy), iphy);
+
+	sci_change_state(&iphy->sm, SCI_PHY_SUB_INITIAL);
+}
+
+static void sci_phy_ready_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+	struct isci_port *iport = iphy->owning_port;
+	struct isci_host *ihost = iport->owning_controller;
+
+	sci_controller_link_up(ihost, phy_get_non_dummy_port(iphy), iphy);
+}
+
+static void sci_phy_ready_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	sci_phy_suspend(iphy);
+}
+
+static void sci_phy_resetting_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	/* The phy is being reset, therefore deactivate it from the port.  In
+	 * the resetting state we don't notify the user regarding link up and
+	 * link down notifications
+	 */
+	sci_port_deactivate_phy(iphy->owning_port, iphy, false);
+
+	if (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS) {
+		scu_link_layer_tx_hard_reset(iphy);
+	} else {
+		/* The SCU does not need to have a discrete reset state so
+		 * just go back to the starting state.
+		 */
+		sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+	}
+}
+
+static const struct sci_base_state sci_phy_state_table[] = {
+	[SCI_PHY_INITIAL] = { },
+	[SCI_PHY_STOPPED] = {
+		.enter_state = sci_phy_stopped_state_enter,
+	},
+	[SCI_PHY_STARTING] = {
+		.enter_state = sci_phy_starting_state_enter,
+	},
+	[SCI_PHY_SUB_INITIAL] = {
+		.enter_state = sci_phy_starting_initial_substate_enter,
+	},
+	[SCI_PHY_SUB_AWAIT_OSSP_EN] = { },
+	[SCI_PHY_SUB_AWAIT_SAS_SPEED_EN] = { },
+	[SCI_PHY_SUB_AWAIT_IAF_UF] = { },
+	[SCI_PHY_SUB_AWAIT_SAS_POWER] = {
+		.enter_state = sci_phy_starting_await_sas_power_substate_enter,
+		.exit_state  = sci_phy_starting_await_sas_power_substate_exit,
+	},
+	[SCI_PHY_SUB_AWAIT_SATA_POWER] = {
+		.enter_state = sci_phy_starting_await_sata_power_substate_enter,
+		.exit_state  = sci_phy_starting_await_sata_power_substate_exit
+	},
+	[SCI_PHY_SUB_AWAIT_SATA_PHY_EN] = {
+		.enter_state = sci_phy_starting_await_sata_phy_substate_enter,
+		.exit_state  = sci_phy_starting_await_sata_phy_substate_exit
+	},
+	[SCI_PHY_SUB_AWAIT_SATA_SPEED_EN] = {
+		.enter_state = sci_phy_starting_await_sata_speed_substate_enter,
+		.exit_state  = sci_phy_starting_await_sata_speed_substate_exit
+	},
+	[SCI_PHY_SUB_AWAIT_SIG_FIS_UF] = {
+		.enter_state = sci_phy_starting_await_sig_fis_uf_substate_enter,
+		.exit_state  = sci_phy_starting_await_sig_fis_uf_substate_exit
+	},
+	[SCI_PHY_SUB_FINAL] = {
+		.enter_state = sci_phy_starting_final_substate_enter,
+	},
+	[SCI_PHY_READY] = {
+		.enter_state = sci_phy_ready_state_enter,
+		.exit_state = sci_phy_ready_state_exit,
+	},
+	[SCI_PHY_RESETTING] = {
+		.enter_state = sci_phy_resetting_state_enter,
+	},
+	[SCI_PHY_FINAL] = { },
+};
+
+void sci_phy_construct(struct isci_phy *iphy,
+			    struct isci_port *iport, u8 phy_index)
+{
+	sci_init_sm(&iphy->sm, sci_phy_state_table, SCI_PHY_INITIAL);
+
+	/* Copy the rest of the input data to our locals */
+	iphy->owning_port = iport;
+	iphy->phy_index = phy_index;
+	iphy->bcn_received_while_port_unassigned = false;
+	iphy->protocol = SCIC_SDS_PHY_PROTOCOL_UNKNOWN;
+	iphy->link_layer_registers = NULL;
+	iphy->max_negotiated_speed = SAS_LINK_RATE_UNKNOWN;
+
+	/* Create the SIGNATURE FIS Timeout timer for this phy */
+	sci_init_timer(&iphy->sata_timer, phy_sata_timeout);
+}
+
+void isci_phy_init(struct isci_phy *iphy, struct isci_host *ihost, int index)
+{
+	struct sci_oem_params *oem = &ihost->oem_parameters;
+	u64 sci_sas_addr;
+	__be64 sas_addr;
+
+	sci_sas_addr = oem->phys[index].sas_address.high;
+	sci_sas_addr <<= 32;
+	sci_sas_addr |= oem->phys[index].sas_address.low;
+	sas_addr = cpu_to_be64(sci_sas_addr);
+	memcpy(iphy->sas_addr, &sas_addr, sizeof(sas_addr));
+
+	iphy->isci_port = NULL;
+	iphy->sas_phy.enabled = 0;
+	iphy->sas_phy.id = index;
+	iphy->sas_phy.sas_addr = &iphy->sas_addr[0];
+	iphy->sas_phy.frame_rcvd = (u8 *)&iphy->frame_rcvd;
+	iphy->sas_phy.ha = &ihost->sas_ha;
+	iphy->sas_phy.lldd_phy = iphy;
+	iphy->sas_phy.enabled = 1;
+	iphy->sas_phy.class = SAS;
+	iphy->sas_phy.iproto = SAS_PROTOCOL_ALL;
+	iphy->sas_phy.tproto = 0;
+	iphy->sas_phy.type = PHY_TYPE_PHYSICAL;
+	iphy->sas_phy.role = PHY_ROLE_INITIATOR;
+	iphy->sas_phy.oob_mode = OOB_NOT_CONNECTED;
+	iphy->sas_phy.linkrate = SAS_LINK_RATE_UNKNOWN;
+	memset(&iphy->frame_rcvd, 0, sizeof(iphy->frame_rcvd));
+}
+
+
+/**
+ * isci_phy_control() - This function is one of the SAS Domain Template
+ *    functions. This is a phy management function.
+ * @phy: This parameter specifies the sphy being controlled.
+ * @func: This parameter specifies the phy control function being invoked.
+ * @buf: This parameter is specific to the phy function being invoked.
+ *
+ * status, zero indicates success.
+ */
+int isci_phy_control(struct asd_sas_phy *sas_phy,
+		     enum phy_func func,
+		     void *buf)
+{
+	int ret = 0;
+	struct isci_phy *iphy = sas_phy->lldd_phy;
+	struct isci_port *iport = iphy->isci_port;
+	struct isci_host *ihost = sas_phy->ha->lldd_ha;
+	unsigned long flags;
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: phy %p; func %d; buf %p; isci phy %p, port %p\n",
+		__func__, sas_phy, func, buf, iphy, iport);
+
+	switch (func) {
+	case PHY_FUNC_DISABLE:
+		spin_lock_irqsave(&ihost->scic_lock, flags);
+		sci_phy_stop(iphy);
+		spin_unlock_irqrestore(&ihost->scic_lock, flags);
+		break;
+
+	case PHY_FUNC_LINK_RESET:
+		spin_lock_irqsave(&ihost->scic_lock, flags);
+		sci_phy_stop(iphy);
+		sci_phy_start(iphy);
+		spin_unlock_irqrestore(&ihost->scic_lock, flags);
+		break;
+
+	case PHY_FUNC_HARD_RESET:
+		if (!iport)
+			return -ENODEV;
+
+		/* Perform the port reset. */
+		ret = isci_port_perform_hard_reset(ihost, iport, iphy);
+
+		break;
+
+	default:
+		dev_dbg(&ihost->pdev->dev,
+			   "%s: phy %p; func %d NOT IMPLEMENTED!\n",
+			   __func__, sas_phy, func);
+		ret = -ENOSYS;
+		break;
+	}
+	return ret;
+}
diff --git a/drivers/scsi/isci/phy.h b/drivers/scsi/isci/phy.h
new file mode 100644
index 0000000..67699c8
--- /dev/null
+++ b/drivers/scsi/isci/phy.h
@@ -0,0 +1,504 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _ISCI_PHY_H_
+#define _ISCI_PHY_H_
+
+#include <scsi/sas.h>
+#include <scsi/libsas.h>
+#include "isci.h"
+#include "sas.h"
+
+/* This is the timeout value for the SATA phy to wait for a SIGNATURE FIS
+ * before restarting the starting state machine.  Technically, the old parallel
+ * ATA specification required up to 30 seconds for a device to issue its
+ * signature FIS as a result of a soft reset.  Now we see that devices respond
+ * generally within 15 seconds, but we'll use 25 for now.
+ */
+#define SCIC_SDS_SIGNATURE_FIS_TIMEOUT    25000
+
+/* This is the timeout for the SATA OOB/SN because the hardware does not
+ * recognize a hot plug after OOB signal but before the SN signals.  We need to
+ * make sure after a hotplug timeout if we have not received the speed event
+ * notification from the hardware that we restart the hardware OOB state
+ * machine.
+ */
+#define SCIC_SDS_SATA_LINK_TRAINING_TIMEOUT  250
+
+enum sci_phy_protocol {
+	SCIC_SDS_PHY_PROTOCOL_UNKNOWN,
+	SCIC_SDS_PHY_PROTOCOL_SAS,
+	SCIC_SDS_PHY_PROTOCOL_SATA,
+	SCIC_SDS_MAX_PHY_PROTOCOLS
+};
+
+/**
+ * isci_phy - hba local phy infrastructure
+ * @sm:
+ * @protocol: attached device protocol
+ * @phy_index: physical index relative to the controller (0-3)
+ * @bcn_received_while_port_unassigned: bcn to report after port association
+ * @sata_timer: timeout SATA signature FIS arrival
+ */
+struct isci_phy {
+	struct sci_base_state_machine sm;
+	struct isci_port *owning_port;
+	enum sas_linkrate max_negotiated_speed;
+	enum sci_phy_protocol protocol;
+	u8 phy_index;
+	bool bcn_received_while_port_unassigned;
+	bool is_in_link_training;
+	struct sci_timer sata_timer;
+	struct scu_transport_layer_registers __iomem *transport_layer_registers;
+	struct scu_link_layer_registers __iomem *link_layer_registers;
+	struct asd_sas_phy sas_phy;
+	struct isci_port *isci_port;
+	u8 sas_addr[SAS_ADDR_SIZE];
+	union {
+		struct sas_identify_frame iaf;
+		struct dev_to_host_fis fis;
+	} frame_rcvd;
+};
+
+static inline struct isci_phy *to_iphy(struct asd_sas_phy *sas_phy)
+{
+	struct isci_phy *iphy = container_of(sas_phy, typeof(*iphy), sas_phy);
+
+	return iphy;
+}
+
+struct sci_phy_cap {
+	union {
+		struct {
+			/*
+			 * The SAS specification indicates the start bit shall
+			 * always be set to
+			 * 1.  This implementation will have the start bit set
+			 * to 0 if the PHY CAPABILITIES were either not
+			 * received or speed negotiation failed.
+			 */
+			u8 start:1;
+			u8 tx_ssc_type:1;
+			u8 res1:2;
+			u8 req_logical_linkrate:4;
+
+			u32 gen1_no_ssc:1;
+			u32 gen1_ssc:1;
+			u32 gen2_no_ssc:1;
+			u32 gen2_ssc:1;
+			u32 gen3_no_ssc:1;
+			u32 gen3_ssc:1;
+			u32 res2:17;
+			u32 parity:1;
+		};
+		u32 all;
+	};
+}  __packed;
+
+/* this data structure reflects the link layer transmit identification reg */
+struct sci_phy_proto {
+	union {
+		struct {
+			u16 _r_a:1;
+			u16 smp_iport:1;
+			u16 stp_iport:1;
+			u16 ssp_iport:1;
+			u16 _r_b:4;
+			u16 _r_c:1;
+			u16 smp_tport:1;
+			u16 stp_tport:1;
+			u16 ssp_tport:1;
+			u16 _r_d:4;
+		};
+		u16 all;
+	};
+} __packed;
+
+
+/**
+ * struct sci_phy_properties - This structure defines the properties common to
+ *    all phys that can be retrieved.
+ *
+ *
+ */
+struct sci_phy_properties {
+	/**
+	 * This field specifies the port that currently contains the
+	 * supplied phy.  This field may be set to NULL
+	 * if the phy is not currently contained in a port.
+	 */
+	struct isci_port *iport;
+
+	/**
+	 * This field specifies the link rate at which the phy is
+	 * currently operating.
+	 */
+	enum sas_linkrate negotiated_link_rate;
+
+	/**
+	 * This field specifies the index of the phy in relation to other
+	 * phys within the controller.  This index is zero relative.
+	 */
+	u8 index;
+};
+
+/**
+ * struct sci_sas_phy_properties - This structure defines the properties,
+ *    specific to a SAS phy, that can be retrieved.
+ *
+ *
+ */
+struct sci_sas_phy_properties {
+	/**
+	 * This field delineates the Identify Address Frame received
+	 * from the remote end point.
+	 */
+	struct sas_identify_frame rcvd_iaf;
+
+	/**
+	 * This field delineates the Phy capabilities structure received
+	 * from the remote end point.
+	 */
+	struct sci_phy_cap rcvd_cap;
+
+};
+
+/**
+ * struct sci_sata_phy_properties - This structure defines the properties,
+ *    specific to a SATA phy, that can be retrieved.
+ *
+ *
+ */
+struct sci_sata_phy_properties {
+	/**
+	 * This field delineates the signature FIS received from the
+	 * attached target.
+	 */
+	struct dev_to_host_fis signature_fis;
+
+	/**
+	 * This field specifies to the user if a port selector is connected
+	 * on the specified phy.
+	 */
+	bool is_port_selector_present;
+
+};
+
+/**
+ * enum sci_phy_counter_id - This enumeration depicts the various pieces of
+ *    optional information that can be retrieved for a specific phy.
+ *
+ *
+ */
+enum sci_phy_counter_id {
+	/**
+	 * This PHY information field tracks the number of frames received.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_FRAME,
+
+	/**
+	 * This PHY information field tracks the number of frames transmitted.
+	 */
+	SCIC_PHY_COUNTER_TRANSMITTED_FRAME,
+
+	/**
+	 * This PHY information field tracks the number of DWORDs received.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_FRAME_WORD,
+
+	/**
+	 * This PHY information field tracks the number of DWORDs transmitted.
+	 */
+	SCIC_PHY_COUNTER_TRANSMITTED_FRAME_DWORD,
+
+	/**
+	 * This PHY information field tracks the number of times DWORD
+	 * synchronization was lost.
+	 */
+	SCIC_PHY_COUNTER_LOSS_OF_SYNC_ERROR,
+
+	/**
+	 * This PHY information field tracks the number of received DWORDs with
+	 * running disparity errors.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_DISPARITY_ERROR,
+
+	/**
+	 * This PHY information field tracks the number of received frames with a
+	 * CRC error (not including short or truncated frames).
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_FRAME_CRC_ERROR,
+
+	/**
+	 * This PHY information field tracks the number of DONE (ACK/NAK TIMEOUT)
+	 * primitives received.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_DONE_ACK_NAK_TIMEOUT,
+
+	/**
+	 * This PHY information field tracks the number of DONE (ACK/NAK TIMEOUT)
+	 * primitives transmitted.
+	 */
+	SCIC_PHY_COUNTER_TRANSMITTED_DONE_ACK_NAK_TIMEOUT,
+
+	/**
+	 * This PHY information field tracks the number of times the inactivity
+	 * timer for connections on the phy has been utilized.
+	 */
+	SCIC_PHY_COUNTER_INACTIVITY_TIMER_EXPIRED,
+
+	/**
+	 * This PHY information field tracks the number of DONE (CREDIT TIMEOUT)
+	 * primitives received.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_DONE_CREDIT_TIMEOUT,
+
+	/**
+	 * This PHY information field tracks the number of DONE (CREDIT TIMEOUT)
+	 * primitives transmitted.
+	 */
+	SCIC_PHY_COUNTER_TRANSMITTED_DONE_CREDIT_TIMEOUT,
+
+	/**
+	 * This PHY information field tracks the number of CREDIT BLOCKED
+	 * primitives received.
+	 * @note Depending on remote device implementation, credit blocks
+	 *       may occur regularly.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_CREDIT_BLOCKED,
+
+	/**
+	 * This PHY information field contains the number of short frames
+	 * received.  A short frame is simply a frame smaller then what is
+	 * allowed by either the SAS or SATA specification.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_SHORT_FRAME,
+
+	/**
+	 * This PHY information field contains the number of frames received after
+	 * credit has been exhausted.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_FRAME_WITHOUT_CREDIT,
+
+	/**
+	 * This PHY information field contains the number of frames received after
+	 * a DONE has been received.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_FRAME_AFTER_DONE,
+
+	/**
+	 * This PHY information field contains the number of times the phy
+	 * failed to achieve DWORD synchronization during speed negotiation.
+	 */
+	SCIC_PHY_COUNTER_SN_DWORD_SYNC_ERROR
+};
+
+enum sci_phy_states {
+	/**
+	 * Simply the initial state for the base domain state machine.
+	 */
+	SCI_PHY_INITIAL,
+
+	/**
+	 * This state indicates that the phy has successfully been stopped.
+	 * In this state no new IO operations are permitted on this phy.
+	 * This state is entered from the INITIAL state.
+	 * This state is entered from the STARTING state.
+	 * This state is entered from the READY state.
+	 * This state is entered from the RESETTING state.
+	 */
+	SCI_PHY_STOPPED,
+
+	/**
+	 * This state indicates that the phy is in the process of becomming
+	 * ready.  In this state no new IO operations are permitted on this phy.
+	 * This state is entered from the STOPPED state.
+	 * This state is entered from the READY state.
+	 * This state is entered from the RESETTING state.
+	 */
+	SCI_PHY_STARTING,
+
+	/**
+	 * Initial state
+	 */
+	SCI_PHY_SUB_INITIAL,
+
+	/**
+	 * Wait state for the hardware OSSP event type notification
+	 */
+	SCI_PHY_SUB_AWAIT_OSSP_EN,
+
+	/**
+	 * Wait state for the PHY speed notification
+	 */
+	SCI_PHY_SUB_AWAIT_SAS_SPEED_EN,
+
+	/**
+	 * Wait state for the IAF Unsolicited frame notification
+	 */
+	SCI_PHY_SUB_AWAIT_IAF_UF,
+
+	/**
+	 * Wait state for the request to consume power
+	 */
+	SCI_PHY_SUB_AWAIT_SAS_POWER,
+
+	/**
+	 * Wait state for request to consume power
+	 */
+	SCI_PHY_SUB_AWAIT_SATA_POWER,
+
+	/**
+	 * Wait state for the SATA PHY notification
+	 */
+	SCI_PHY_SUB_AWAIT_SATA_PHY_EN,
+
+	/**
+	 * Wait for the SATA PHY speed notification
+	 */
+	SCI_PHY_SUB_AWAIT_SATA_SPEED_EN,
+
+	/**
+	 * Wait state for the SIGNATURE FIS unsolicited frame notification
+	 */
+	SCI_PHY_SUB_AWAIT_SIG_FIS_UF,
+
+	/**
+	 * Exit state for this state machine
+	 */
+	SCI_PHY_SUB_FINAL,
+
+	/**
+	 * This state indicates the the phy is now ready.  Thus, the user
+	 * is able to perform IO operations utilizing this phy as long as it
+	 * is currently part of a valid port.
+	 * This state is entered from the STARTING state.
+	 */
+	SCI_PHY_READY,
+
+	/**
+	 * This state indicates that the phy is in the process of being reset.
+	 * In this state no new IO operations are permitted on this phy.
+	 * This state is entered from the READY state.
+	 */
+	SCI_PHY_RESETTING,
+
+	/**
+	 * Simply the final state for the base phy state machine.
+	 */
+	SCI_PHY_FINAL,
+};
+
+void sci_phy_construct(
+	struct isci_phy *iphy,
+	struct isci_port *iport,
+	u8 phy_index);
+
+struct isci_port *phy_get_non_dummy_port(struct isci_phy *iphy);
+
+void sci_phy_set_port(
+	struct isci_phy *iphy,
+	struct isci_port *iport);
+
+enum sci_status sci_phy_initialize(
+	struct isci_phy *iphy,
+	struct scu_transport_layer_registers __iomem *transport_layer_registers,
+	struct scu_link_layer_registers __iomem *link_layer_registers);
+
+enum sci_status sci_phy_start(
+	struct isci_phy *iphy);
+
+enum sci_status sci_phy_stop(
+	struct isci_phy *iphy);
+
+enum sci_status sci_phy_reset(
+	struct isci_phy *iphy);
+
+void sci_phy_resume(
+	struct isci_phy *iphy);
+
+void sci_phy_setup_transport(
+	struct isci_phy *iphy,
+	u32 device_id);
+
+enum sci_status sci_phy_event_handler(
+	struct isci_phy *iphy,
+	u32 event_code);
+
+enum sci_status sci_phy_frame_handler(
+	struct isci_phy *iphy,
+	u32 frame_index);
+
+enum sci_status sci_phy_consume_power_handler(
+	struct isci_phy *iphy);
+
+void sci_phy_get_sas_address(
+	struct isci_phy *iphy,
+	struct sci_sas_address *sas_address);
+
+void sci_phy_get_attached_sas_address(
+	struct isci_phy *iphy,
+	struct sci_sas_address *sas_address);
+
+struct sci_phy_proto;
+void sci_phy_get_protocols(
+	struct isci_phy *iphy,
+	struct sci_phy_proto *protocols);
+enum sas_linkrate sci_phy_linkrate(struct isci_phy *iphy);
+
+struct isci_host;
+void isci_phy_init(struct isci_phy *iphy, struct isci_host *ihost, int index);
+int isci_phy_control(struct asd_sas_phy *phy, enum phy_func func, void *buf);
+
+#endif /* !defined(_ISCI_PHY_H_) */
diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c
new file mode 100644
index 0000000..8f6f9b7
--- /dev/null
+++ b/drivers/scsi/isci/port.c
@@ -0,0 +1,1757 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "isci.h"
+#include "port.h"
+#include "request.h"
+
+#define SCIC_SDS_PORT_HARD_RESET_TIMEOUT  (1000)
+#define SCU_DUMMY_INDEX    (0xFFFF)
+
+static void isci_port_change_state(struct isci_port *iport, enum isci_status status)
+{
+	unsigned long flags;
+
+	dev_dbg(&iport->isci_host->pdev->dev,
+		"%s: iport = %p, state = 0x%x\n",
+		__func__, iport, status);
+
+	/* XXX pointless lock */
+	spin_lock_irqsave(&iport->state_lock, flags);
+	iport->status = status;
+	spin_unlock_irqrestore(&iport->state_lock, flags);
+}
+
+static void sci_port_get_protocols(struct isci_port *iport, struct sci_phy_proto *proto)
+{
+	u8 index;
+
+	proto->all = 0;
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		struct isci_phy *iphy = iport->phy_table[index];
+
+		if (!iphy)
+			continue;
+		sci_phy_get_protocols(iphy, proto);
+	}
+}
+
+static u32 sci_port_get_phys(struct isci_port *iport)
+{
+	u32 index;
+	u32 mask;
+
+	mask = 0;
+	for (index = 0; index < SCI_MAX_PHYS; index++)
+		if (iport->phy_table[index])
+			mask |= (1 << index);
+
+	return mask;
+}
+
+/**
+ * sci_port_get_properties() - This method simply returns the properties
+ *    regarding the port, such as: physical index, protocols, sas address, etc.
+ * @port: this parameter specifies the port for which to retrieve the physical
+ *    index.
+ * @properties: This parameter specifies the properties structure into which to
+ *    copy the requested information.
+ *
+ * Indicate if the user specified a valid port. SCI_SUCCESS This value is
+ * returned if the specified port was valid. SCI_FAILURE_INVALID_PORT This
+ * value is returned if the specified port is not valid.  When this value is
+ * returned, no data is copied to the properties output parameter.
+ */
+static enum sci_status sci_port_get_properties(struct isci_port *iport,
+						struct sci_port_properties *prop)
+{
+	if (!iport || iport->logical_port_index == SCIC_SDS_DUMMY_PORT)
+		return SCI_FAILURE_INVALID_PORT;
+
+	prop->index = iport->logical_port_index;
+	prop->phy_mask = sci_port_get_phys(iport);
+	sci_port_get_sas_address(iport, &prop->local.sas_address);
+	sci_port_get_protocols(iport, &prop->local.protocols);
+	sci_port_get_attached_sas_address(iport, &prop->remote.sas_address);
+
+	return SCI_SUCCESS;
+}
+
+static void sci_port_bcn_enable(struct isci_port *iport)
+{
+	struct isci_phy *iphy;
+	u32 val;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(iport->phy_table); i++) {
+		iphy = iport->phy_table[i];
+		if (!iphy)
+			continue;
+		val = readl(&iphy->link_layer_registers->link_layer_control);
+		/* clear the bit by writing 1. */
+		writel(val, &iphy->link_layer_registers->link_layer_control);
+	}
+}
+
+/* called under sci_lock to stabilize phy:port associations */
+void isci_port_bcn_enable(struct isci_host *ihost, struct isci_port *iport)
+{
+	int i;
+
+	clear_bit(IPORT_BCN_BLOCKED, &iport->flags);
+	wake_up(&ihost->eventq);
+
+	if (!test_and_clear_bit(IPORT_BCN_PENDING, &iport->flags))
+		return;
+
+	for (i = 0; i < ARRAY_SIZE(iport->phy_table); i++) {
+		struct isci_phy *iphy = iport->phy_table[i];
+
+		if (!iphy)
+			continue;
+
+		ihost->sas_ha.notify_port_event(&iphy->sas_phy,
+						PORTE_BROADCAST_RCVD);
+		break;
+	}
+}
+
+static void isci_port_bc_change_received(struct isci_host *ihost,
+					 struct isci_port *iport,
+					 struct isci_phy *iphy)
+{
+	if (iport && test_bit(IPORT_BCN_BLOCKED, &iport->flags)) {
+		dev_dbg(&ihost->pdev->dev,
+			"%s: disabled BCN; isci_phy = %p, sas_phy = %p\n",
+			__func__, iphy, &iphy->sas_phy);
+		set_bit(IPORT_BCN_PENDING, &iport->flags);
+		atomic_inc(&iport->event);
+		wake_up(&ihost->eventq);
+	} else {
+		dev_dbg(&ihost->pdev->dev,
+			"%s: isci_phy = %p, sas_phy = %p\n",
+			__func__, iphy, &iphy->sas_phy);
+
+		ihost->sas_ha.notify_port_event(&iphy->sas_phy,
+						PORTE_BROADCAST_RCVD);
+	}
+	sci_port_bcn_enable(iport);
+}
+
+static void isci_port_link_up(struct isci_host *isci_host,
+			      struct isci_port *iport,
+			      struct isci_phy *iphy)
+{
+	unsigned long flags;
+	struct sci_port_properties properties;
+	unsigned long success = true;
+
+	BUG_ON(iphy->isci_port != NULL);
+
+	iphy->isci_port = iport;
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_port = %p\n",
+		__func__, iport);
+
+	spin_lock_irqsave(&iphy->sas_phy.frame_rcvd_lock, flags);
+
+	isci_port_change_state(iphy->isci_port, isci_starting);
+
+	sci_port_get_properties(iport, &properties);
+
+	if (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) {
+		u64 attached_sas_address;
+
+		iphy->sas_phy.oob_mode = SATA_OOB_MODE;
+		iphy->sas_phy.frame_rcvd_size = sizeof(struct dev_to_host_fis);
+
+		/*
+		 * For direct-attached SATA devices, the SCI core will
+		 * automagically assign a SAS address to the end device
+		 * for the purpose of creating a port. This SAS address
+		 * will not be the same as assigned to the PHY and needs
+		 * to be obtained from struct sci_port_properties properties.
+		 */
+		attached_sas_address = properties.remote.sas_address.high;
+		attached_sas_address <<= 32;
+		attached_sas_address |= properties.remote.sas_address.low;
+		swab64s(&attached_sas_address);
+
+		memcpy(&iphy->sas_phy.attached_sas_addr,
+		       &attached_sas_address, sizeof(attached_sas_address));
+	} else if (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS) {
+		iphy->sas_phy.oob_mode = SAS_OOB_MODE;
+		iphy->sas_phy.frame_rcvd_size = sizeof(struct sas_identify_frame);
+
+		/* Copy the attached SAS address from the IAF */
+		memcpy(iphy->sas_phy.attached_sas_addr,
+		       iphy->frame_rcvd.iaf.sas_addr, SAS_ADDR_SIZE);
+	} else {
+		dev_err(&isci_host->pdev->dev, "%s: unkown target\n", __func__);
+		success = false;
+	}
+
+	iphy->sas_phy.phy->negotiated_linkrate = sci_phy_linkrate(iphy);
+
+	spin_unlock_irqrestore(&iphy->sas_phy.frame_rcvd_lock, flags);
+
+	/* Notify libsas that we have an address frame, if indeed
+	 * we've found an SSP, SMP, or STP target */
+	if (success)
+		isci_host->sas_ha.notify_port_event(&iphy->sas_phy,
+						    PORTE_BYTES_DMAED);
+}
+
+
+/**
+ * isci_port_link_down() - This function is called by the sci core when a link
+ *    becomes inactive.
+ * @isci_host: This parameter specifies the isci host object.
+ * @phy: This parameter specifies the isci phy with the active link.
+ * @port: This parameter specifies the isci port with the active link.
+ *
+ */
+static void isci_port_link_down(struct isci_host *isci_host,
+				struct isci_phy *isci_phy,
+				struct isci_port *isci_port)
+{
+	struct isci_remote_device *isci_device;
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_port = %p\n", __func__, isci_port);
+
+	if (isci_port) {
+
+		/* check to see if this is the last phy on this port. */
+		if (isci_phy->sas_phy.port &&
+		    isci_phy->sas_phy.port->num_phys == 1) {
+			atomic_inc(&isci_port->event);
+			isci_port_bcn_enable(isci_host, isci_port);
+
+			/* change the state for all devices on this port.  The
+			 * next task sent to this device will be returned as
+			 * SAS_TASK_UNDELIVERED, and the scsi mid layer will
+			 * remove the target
+			 */
+			list_for_each_entry(isci_device,
+					    &isci_port->remote_dev_list,
+					    node) {
+				dev_dbg(&isci_host->pdev->dev,
+					"%s: isci_device = %p\n",
+					__func__, isci_device);
+				set_bit(IDEV_GONE, &isci_device->flags);
+			}
+		}
+		isci_port_change_state(isci_port, isci_stopping);
+	}
+
+	/* Notify libsas of the borken link, this will trigger calls to our
+	 * isci_port_deformed and isci_dev_gone functions.
+	 */
+	sas_phy_disconnected(&isci_phy->sas_phy);
+	isci_host->sas_ha.notify_phy_event(&isci_phy->sas_phy,
+					   PHYE_LOSS_OF_SIGNAL);
+
+	isci_phy->isci_port = NULL;
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_port = %p - Done\n", __func__, isci_port);
+}
+
+
+/**
+ * isci_port_ready() - This function is called by the sci core when a link
+ *    becomes ready.
+ * @isci_host: This parameter specifies the isci host object.
+ * @port: This parameter specifies the sci port with the active link.
+ *
+ */
+static void isci_port_ready(struct isci_host *isci_host, struct isci_port *isci_port)
+{
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_port = %p\n", __func__, isci_port);
+
+	complete_all(&isci_port->start_complete);
+	isci_port_change_state(isci_port, isci_ready);
+	return;
+}
+
+/**
+ * isci_port_not_ready() - This function is called by the sci core when a link
+ *    is not ready. All remote devices on this link will be removed if they are
+ *    in the stopping state.
+ * @isci_host: This parameter specifies the isci host object.
+ * @port: This parameter specifies the sci port with the active link.
+ *
+ */
+static void isci_port_not_ready(struct isci_host *isci_host, struct isci_port *isci_port)
+{
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_port = %p\n", __func__, isci_port);
+}
+
+static void isci_port_stop_complete(struct isci_host *ihost,
+				    struct isci_port *iport,
+				    enum sci_status completion_status)
+{
+	dev_dbg(&ihost->pdev->dev, "Port stop complete\n");
+}
+
+/**
+ * isci_port_hard_reset_complete() - This function is called by the sci core
+ *    when the hard reset complete notification has been received.
+ * @port: This parameter specifies the sci port with the active link.
+ * @completion_status: This parameter specifies the core status for the reset
+ *    process.
+ *
+ */
+static void isci_port_hard_reset_complete(struct isci_port *isci_port,
+					  enum sci_status completion_status)
+{
+	dev_dbg(&isci_port->isci_host->pdev->dev,
+		"%s: isci_port = %p, completion_status=%x\n",
+		     __func__, isci_port, completion_status);
+
+	/* Save the status of the hard reset from the port. */
+	isci_port->hard_reset_status = completion_status;
+
+	complete_all(&isci_port->hard_reset_complete);
+}
+
+/* This method will return a true value if the specified phy can be assigned to
+ * this port The following is a list of phys for each port that are allowed: -
+ * Port 0 - 3 2 1 0 - Port 1 -     1 - Port 2 - 3 2 - Port 3 - 3 This method
+ * doesn't preclude all configurations.  It merely ensures that a phy is part
+ * of the allowable set of phy identifiers for that port.  For example, one
+ * could assign phy 3 to port 0 and no other phys.  Please refer to
+ * sci_port_is_phy_mask_valid() for information regarding whether the
+ * phy_mask for a port can be supported. bool true if this is a valid phy
+ * assignment for the port false if this is not a valid phy assignment for the
+ * port
+ */
+bool sci_port_is_valid_phy_assignment(struct isci_port *iport, u32 phy_index)
+{
+	struct isci_host *ihost = iport->owning_controller;
+	struct sci_user_parameters *user = &ihost->user_parameters;
+
+	/* Initialize to invalid value. */
+	u32 existing_phy_index = SCI_MAX_PHYS;
+	u32 index;
+
+	if ((iport->physical_port_index == 1) && (phy_index != 1))
+		return false;
+
+	if (iport->physical_port_index == 3 && phy_index != 3)
+		return false;
+
+	if (iport->physical_port_index == 2 &&
+	    (phy_index == 0 || phy_index == 1))
+		return false;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++)
+		if (iport->phy_table[index] && index != phy_index)
+			existing_phy_index = index;
+
+	/* Ensure that all of the phys in the port are capable of
+	 * operating at the same maximum link rate.
+	 */
+	if (existing_phy_index < SCI_MAX_PHYS &&
+	    user->phys[phy_index].max_speed_generation !=
+	    user->phys[existing_phy_index].max_speed_generation)
+		return false;
+
+	return true;
+}
+
+/**
+ *
+ * @sci_port: This is the port object for which to determine if the phy mask
+ *    can be supported.
+ *
+ * This method will return a true value if the port's phy mask can be supported
+ * by the SCU. The following is a list of valid PHY mask configurations for
+ * each port: - Port 0 - [[3  2] 1] 0 - Port 1 -        [1] - Port 2 - [[3] 2]
+ * - Port 3 -  [3] This method returns a boolean indication specifying if the
+ * phy mask can be supported. true if this is a valid phy assignment for the
+ * port false if this is not a valid phy assignment for the port
+ */
+static bool sci_port_is_phy_mask_valid(
+	struct isci_port *iport,
+	u32 phy_mask)
+{
+	if (iport->physical_port_index == 0) {
+		if (((phy_mask & 0x0F) == 0x0F)
+		    || ((phy_mask & 0x03) == 0x03)
+		    || ((phy_mask & 0x01) == 0x01)
+		    || (phy_mask == 0))
+			return true;
+	} else if (iport->physical_port_index == 1) {
+		if (((phy_mask & 0x02) == 0x02)
+		    || (phy_mask == 0))
+			return true;
+	} else if (iport->physical_port_index == 2) {
+		if (((phy_mask & 0x0C) == 0x0C)
+		    || ((phy_mask & 0x04) == 0x04)
+		    || (phy_mask == 0))
+			return true;
+	} else if (iport->physical_port_index == 3) {
+		if (((phy_mask & 0x08) == 0x08)
+		    || (phy_mask == 0))
+			return true;
+	}
+
+	return false;
+}
+
+/*
+ * This method retrieves a currently active (i.e. connected) phy contained in
+ * the port.  Currently, the lowest order phy that is connected is returned.
+ * This method returns a pointer to a SCIS_SDS_PHY object. NULL This value is
+ * returned if there are no currently active (i.e. connected to a remote end
+ * point) phys contained in the port. All other values specify a struct sci_phy
+ * object that is active in the port.
+ */
+static struct isci_phy *sci_port_get_a_connected_phy(struct isci_port *iport)
+{
+	u32 index;
+	struct isci_phy *iphy;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		/* Ensure that the phy is both part of the port and currently
+		 * connected to the remote end-point.
+		 */
+		iphy = iport->phy_table[index];
+		if (iphy && sci_port_active_phy(iport, iphy))
+			return iphy;
+	}
+
+	return NULL;
+}
+
+static enum sci_status sci_port_set_phy(struct isci_port *iport, struct isci_phy *iphy)
+{
+	/* Check to see if we can add this phy to a port
+	 * that means that the phy is not part of a port and that the port does
+	 * not already have a phy assinged to the phy index.
+	 */
+	if (!iport->phy_table[iphy->phy_index] &&
+	    !phy_get_non_dummy_port(iphy) &&
+	    sci_port_is_valid_phy_assignment(iport, iphy->phy_index)) {
+		/* Phy is being added in the stopped state so we are in MPC mode
+		 * make logical port index = physical port index
+		 */
+		iport->logical_port_index = iport->physical_port_index;
+		iport->phy_table[iphy->phy_index] = iphy;
+		sci_phy_set_port(iphy, iport);
+
+		return SCI_SUCCESS;
+	}
+
+	return SCI_FAILURE;
+}
+
+static enum sci_status sci_port_clear_phy(struct isci_port *iport, struct isci_phy *iphy)
+{
+	/* Make sure that this phy is part of this port */
+	if (iport->phy_table[iphy->phy_index] == iphy &&
+	    phy_get_non_dummy_port(iphy) == iport) {
+		struct isci_host *ihost = iport->owning_controller;
+
+		/* Yep it is assigned to this port so remove it */
+		sci_phy_set_port(iphy, &ihost->ports[SCI_MAX_PORTS]);
+		iport->phy_table[iphy->phy_index] = NULL;
+		return SCI_SUCCESS;
+	}
+
+	return SCI_FAILURE;
+}
+
+void sci_port_get_sas_address(struct isci_port *iport, struct sci_sas_address *sas)
+{
+	u32 index;
+
+	sas->high = 0;
+	sas->low  = 0;
+	for (index = 0; index < SCI_MAX_PHYS; index++)
+		if (iport->phy_table[index])
+			sci_phy_get_sas_address(iport->phy_table[index], sas);
+}
+
+void sci_port_get_attached_sas_address(struct isci_port *iport, struct sci_sas_address *sas)
+{
+	struct isci_phy *iphy;
+
+	/*
+	 * Ensure that the phy is both part of the port and currently
+	 * connected to the remote end-point.
+	 */
+	iphy = sci_port_get_a_connected_phy(iport);
+	if (iphy) {
+		if (iphy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA) {
+			sci_phy_get_attached_sas_address(iphy, sas);
+		} else {
+			sci_phy_get_sas_address(iphy, sas);
+			sas->low += iphy->phy_index;
+		}
+	} else {
+		sas->high = 0;
+		sas->low  = 0;
+	}
+}
+
+/**
+ * sci_port_construct_dummy_rnc() - create dummy rnc for si workaround
+ *
+ * @sci_port: logical port on which we need to create the remote node context
+ * @rni: remote node index for this remote node context.
+ *
+ * This routine will construct a dummy remote node context data structure
+ * This structure will be posted to the hardware to work around a scheduler
+ * error in the hardware.
+ */
+static void sci_port_construct_dummy_rnc(struct isci_port *iport, u16 rni)
+{
+	union scu_remote_node_context *rnc;
+
+	rnc = &iport->owning_controller->remote_node_context_table[rni];
+
+	memset(rnc, 0, sizeof(union scu_remote_node_context));
+
+	rnc->ssp.remote_sas_address_hi = 0;
+	rnc->ssp.remote_sas_address_lo = 0;
+
+	rnc->ssp.remote_node_index = rni;
+	rnc->ssp.remote_node_port_width = 1;
+	rnc->ssp.logical_port_index = iport->physical_port_index;
+
+	rnc->ssp.nexus_loss_timer_enable = false;
+	rnc->ssp.check_bit = false;
+	rnc->ssp.is_valid = true;
+	rnc->ssp.is_remote_node_context = true;
+	rnc->ssp.function_number = 0;
+	rnc->ssp.arbitration_wait_time = 0;
+}
+
+/*
+ * construct a dummy task context data structure.  This
+ * structure will be posted to the hardwre to work around a scheduler error
+ * in the hardware.
+ */
+static void sci_port_construct_dummy_task(struct isci_port *iport, u16 tag)
+{
+	struct isci_host *ihost = iport->owning_controller;
+	struct scu_task_context *task_context;
+
+	task_context = &ihost->task_context_table[ISCI_TAG_TCI(tag)];
+	memset(task_context, 0, sizeof(struct scu_task_context));
+
+	task_context->initiator_request = 1;
+	task_context->connection_rate = 1;
+	task_context->logical_port_index = iport->physical_port_index;
+	task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP;
+	task_context->task_index = ISCI_TAG_TCI(tag);
+	task_context->valid = SCU_TASK_CONTEXT_VALID;
+	task_context->context_type = SCU_TASK_CONTEXT_TYPE;
+	task_context->remote_node_index = iport->reserved_rni;
+	task_context->do_not_dma_ssp_good_response = 1;
+	task_context->task_phase = 0x01;
+}
+
+static void sci_port_destroy_dummy_resources(struct isci_port *iport)
+{
+	struct isci_host *ihost = iport->owning_controller;
+
+	if (iport->reserved_tag != SCI_CONTROLLER_INVALID_IO_TAG)
+		isci_free_tag(ihost, iport->reserved_tag);
+
+	if (iport->reserved_rni != SCU_DUMMY_INDEX)
+		sci_remote_node_table_release_remote_node_index(&ihost->available_remote_nodes,
+								     1, iport->reserved_rni);
+
+	iport->reserved_rni = SCU_DUMMY_INDEX;
+	iport->reserved_tag = SCI_CONTROLLER_INVALID_IO_TAG;
+}
+
+void sci_port_setup_transports(struct isci_port *iport, u32 device_id)
+{
+	u8 index;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		if (iport->active_phy_mask & (1 << index))
+			sci_phy_setup_transport(iport->phy_table[index], device_id);
+	}
+}
+
+static void sci_port_activate_phy(struct isci_port *iport, struct isci_phy *iphy,
+				  bool do_notify_user)
+{
+	struct isci_host *ihost = iport->owning_controller;
+
+	if (iphy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA)
+		sci_phy_resume(iphy);
+
+	iport->active_phy_mask |= 1 << iphy->phy_index;
+
+	sci_controller_clear_invalid_phy(ihost, iphy);
+
+	if (do_notify_user == true)
+		isci_port_link_up(ihost, iport, iphy);
+}
+
+void sci_port_deactivate_phy(struct isci_port *iport, struct isci_phy *iphy,
+			     bool do_notify_user)
+{
+	struct isci_host *ihost = iport->owning_controller;
+
+	iport->active_phy_mask &= ~(1 << iphy->phy_index);
+
+	iphy->max_negotiated_speed = SAS_LINK_RATE_UNKNOWN;
+
+	/* Re-assign the phy back to the LP as if it were a narrow port */
+	writel(iphy->phy_index,
+		&iport->port_pe_configuration_register[iphy->phy_index]);
+
+	if (do_notify_user == true)
+		isci_port_link_down(ihost, iphy, iport);
+}
+
+static void sci_port_invalid_link_up(struct isci_port *iport, struct isci_phy *iphy)
+{
+	struct isci_host *ihost = iport->owning_controller;
+
+	/*
+	 * Check to see if we have alreay reported this link as bad and if
+	 * not go ahead and tell the SCI_USER that we have discovered an
+	 * invalid link.
+	 */
+	if ((ihost->invalid_phy_mask & (1 << iphy->phy_index)) == 0) {
+		ihost->invalid_phy_mask |= 1 << iphy->phy_index;
+		dev_warn(&ihost->pdev->dev, "Invalid link up!\n");
+	}
+}
+
+static bool is_port_ready_state(enum sci_port_states state)
+{
+	switch (state) {
+	case SCI_PORT_READY:
+	case SCI_PORT_SUB_WAITING:
+	case SCI_PORT_SUB_OPERATIONAL:
+	case SCI_PORT_SUB_CONFIGURING:
+		return true;
+	default:
+		return false;
+	}
+}
+
+/* flag dummy rnc hanling when exiting a ready state */
+static void port_state_machine_change(struct isci_port *iport,
+				      enum sci_port_states state)
+{
+	struct sci_base_state_machine *sm = &iport->sm;
+	enum sci_port_states old_state = sm->current_state_id;
+
+	if (is_port_ready_state(old_state) && !is_port_ready_state(state))
+		iport->ready_exit = true;
+
+	sci_change_state(sm, state);
+	iport->ready_exit = false;
+}
+
+/**
+ * sci_port_general_link_up_handler - phy can be assigned to port?
+ * @sci_port: sci_port object for which has a phy that has gone link up.
+ * @sci_phy: This is the struct isci_phy object that has gone link up.
+ * @do_notify_user: This parameter specifies whether to inform the user (via
+ *    sci_port_link_up()) as to the fact that a new phy as become ready.
+ *
+ * Determine if this phy can be assigned to this
+ * port . If the phy is not a valid PHY for
+ * this port then the function will notify the user. A PHY can only be
+ * part of a port if it's attached SAS ADDRESS is the same as all other PHYs in
+ * the same port. none
+ */
+static void sci_port_general_link_up_handler(struct isci_port *iport,
+						  struct isci_phy *iphy,
+						  bool do_notify_user)
+{
+	struct sci_sas_address port_sas_address;
+	struct sci_sas_address phy_sas_address;
+
+	sci_port_get_attached_sas_address(iport, &port_sas_address);
+	sci_phy_get_attached_sas_address(iphy, &phy_sas_address);
+
+	/* If the SAS address of the new phy matches the SAS address of
+	 * other phys in the port OR this is the first phy in the port,
+	 * then activate the phy and allow it to be used for operations
+	 * in this port.
+	 */
+	if ((phy_sas_address.high == port_sas_address.high &&
+	     phy_sas_address.low  == port_sas_address.low) ||
+	    iport->active_phy_mask == 0) {
+		struct sci_base_state_machine *sm = &iport->sm;
+
+		sci_port_activate_phy(iport, iphy, do_notify_user);
+		if (sm->current_state_id == SCI_PORT_RESETTING)
+			port_state_machine_change(iport, SCI_PORT_READY);
+	} else
+		sci_port_invalid_link_up(iport, iphy);
+}
+
+
+
+/**
+ * This method returns false if the port only has a single phy object assigned.
+ *     If there are no phys or more than one phy then the method will return
+ *    true.
+ * @sci_port: The port for which the wide port condition is to be checked.
+ *
+ * bool true Is returned if this is a wide ported port. false Is returned if
+ * this is a narrow port.
+ */
+static bool sci_port_is_wide(struct isci_port *iport)
+{
+	u32 index;
+	u32 phy_count = 0;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		if (iport->phy_table[index] != NULL) {
+			phy_count++;
+		}
+	}
+
+	return phy_count != 1;
+}
+
+/**
+ * This method is called by the PHY object when the link is detected. if the
+ *    port wants the PHY to continue on to the link up state then the port
+ *    layer must return true.  If the port object returns false the phy object
+ *    must halt its attempt to go link up.
+ * @sci_port: The port associated with the phy object.
+ * @sci_phy: The phy object that is trying to go link up.
+ *
+ * true if the phy object can continue to the link up condition. true Is
+ * returned if this phy can continue to the ready state. false Is returned if
+ * can not continue on to the ready state. This notification is in place for
+ * wide ports and direct attached phys.  Since there are no wide ported SATA
+ * devices this could become an invalid port configuration.
+ */
+bool sci_port_link_detected(
+	struct isci_port *iport,
+	struct isci_phy *iphy)
+{
+	if ((iport->logical_port_index != SCIC_SDS_DUMMY_PORT) &&
+	    (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) &&
+	    sci_port_is_wide(iport)) {
+		sci_port_invalid_link_up(iport, iphy);
+
+		return false;
+	}
+
+	return true;
+}
+
+static void port_timeout(unsigned long data)
+{
+	struct sci_timer *tmr = (struct sci_timer *)data;
+	struct isci_port *iport = container_of(tmr, typeof(*iport), timer);
+	struct isci_host *ihost = iport->owning_controller;
+	unsigned long flags;
+	u32 current_state;
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	if (tmr->cancel)
+		goto done;
+
+	current_state = iport->sm.current_state_id;
+
+	if (current_state == SCI_PORT_RESETTING) {
+		/* if the port is still in the resetting state then the timeout
+		 * fired before the reset completed.
+		 */
+		port_state_machine_change(iport, SCI_PORT_FAILED);
+	} else if (current_state == SCI_PORT_STOPPED) {
+		/* if the port is stopped then the start request failed In this
+		 * case stay in the stopped state.
+		 */
+		dev_err(sciport_to_dev(iport),
+			"%s: SCIC Port 0x%p failed to stop before tiemout.\n",
+			__func__,
+			iport);
+	} else if (current_state == SCI_PORT_STOPPING) {
+		/* if the port is still stopping then the stop has not completed */
+		isci_port_stop_complete(iport->owning_controller,
+					iport,
+					SCI_FAILURE_TIMEOUT);
+	} else {
+		/* The port is in the ready state and we have a timer
+		 * reporting a timeout this should not happen.
+		 */
+		dev_err(sciport_to_dev(iport),
+			"%s: SCIC Port 0x%p is processing a timeout operation "
+			"in state %d.\n", __func__, iport, current_state);
+	}
+
+done:
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
+
+/* --------------------------------------------------------------------------- */
+
+/**
+ * This function updates the hardwares VIIT entry for this port.
+ *
+ *
+ */
+static void sci_port_update_viit_entry(struct isci_port *iport)
+{
+	struct sci_sas_address sas_address;
+
+	sci_port_get_sas_address(iport, &sas_address);
+
+	writel(sas_address.high,
+		&iport->viit_registers->initiator_sas_address_hi);
+	writel(sas_address.low,
+		&iport->viit_registers->initiator_sas_address_lo);
+
+	/* This value get cleared just in case its not already cleared */
+	writel(0, &iport->viit_registers->reserved);
+
+	/* We are required to update the status register last */
+	writel(SCU_VIIT_ENTRY_ID_VIIT |
+	       SCU_VIIT_IPPT_INITIATOR |
+	       ((1 << iport->physical_port_index) << SCU_VIIT_ENTRY_LPVIE_SHIFT) |
+	       SCU_VIIT_STATUS_ALL_VALID,
+	       &iport->viit_registers->status);
+}
+
+enum sas_linkrate sci_port_get_max_allowed_speed(struct isci_port *iport)
+{
+	u16 index;
+	struct isci_phy *iphy;
+	enum sas_linkrate max_allowed_speed = SAS_LINK_RATE_6_0_GBPS;
+
+	/*
+	 * Loop through all of the phys in this port and find the phy with the
+	 * lowest maximum link rate. */
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		iphy = iport->phy_table[index];
+		if (iphy && sci_port_active_phy(iport, iphy) &&
+		    iphy->max_negotiated_speed < max_allowed_speed)
+			max_allowed_speed = iphy->max_negotiated_speed;
+	}
+
+	return max_allowed_speed;
+}
+
+static void sci_port_suspend_port_task_scheduler(struct isci_port *iport)
+{
+	u32 pts_control_value;
+
+	pts_control_value = readl(&iport->port_task_scheduler_registers->control);
+	pts_control_value |= SCU_PTSxCR_GEN_BIT(SUSPEND);
+	writel(pts_control_value, &iport->port_task_scheduler_registers->control);
+}
+
+/**
+ * sci_port_post_dummy_request() - post dummy/workaround request
+ * @sci_port: port to post task
+ *
+ * Prevent the hardware scheduler from posting new requests to the front
+ * of the scheduler queue causing a starvation problem for currently
+ * ongoing requests.
+ *
+ */
+static void sci_port_post_dummy_request(struct isci_port *iport)
+{
+	struct isci_host *ihost = iport->owning_controller;
+	u16 tag = iport->reserved_tag;
+	struct scu_task_context *tc;
+	u32 command;
+
+	tc = &ihost->task_context_table[ISCI_TAG_TCI(tag)];
+	tc->abort = 0;
+
+	command = SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+		  iport->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT |
+		  ISCI_TAG_TCI(tag);
+
+	sci_controller_post_request(ihost, command);
+}
+
+/**
+ * This routine will abort the dummy request.  This will alow the hardware to
+ * power down parts of the silicon to save power.
+ *
+ * @sci_port: The port on which the task must be aborted.
+ *
+ */
+static void sci_port_abort_dummy_request(struct isci_port *iport)
+{
+	struct isci_host *ihost = iport->owning_controller;
+	u16 tag = iport->reserved_tag;
+	struct scu_task_context *tc;
+	u32 command;
+
+	tc = &ihost->task_context_table[ISCI_TAG_TCI(tag)];
+	tc->abort = 1;
+
+	command = SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT |
+		  iport->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT |
+		  ISCI_TAG_TCI(tag);
+
+	sci_controller_post_request(ihost, command);
+}
+
+/**
+ *
+ * @sci_port: This is the struct isci_port object to resume.
+ *
+ * This method will resume the port task scheduler for this port object. none
+ */
+static void
+sci_port_resume_port_task_scheduler(struct isci_port *iport)
+{
+	u32 pts_control_value;
+
+	pts_control_value = readl(&iport->port_task_scheduler_registers->control);
+	pts_control_value &= ~SCU_PTSxCR_GEN_BIT(SUSPEND);
+	writel(pts_control_value, &iport->port_task_scheduler_registers->control);
+}
+
+static void sci_port_ready_substate_waiting_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+
+	sci_port_suspend_port_task_scheduler(iport);
+
+	iport->not_ready_reason = SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS;
+
+	if (iport->active_phy_mask != 0) {
+		/* At least one of the phys on the port is ready */
+		port_state_machine_change(iport,
+					  SCI_PORT_SUB_OPERATIONAL);
+	}
+}
+
+static void sci_port_ready_substate_operational_enter(struct sci_base_state_machine *sm)
+{
+	u32 index;
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+	struct isci_host *ihost = iport->owning_controller;
+
+	isci_port_ready(ihost, iport);
+
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		if (iport->phy_table[index]) {
+			writel(iport->physical_port_index,
+				&iport->port_pe_configuration_register[
+					iport->phy_table[index]->phy_index]);
+		}
+	}
+
+	sci_port_update_viit_entry(iport);
+
+	sci_port_resume_port_task_scheduler(iport);
+
+	/*
+	 * Post the dummy task for the port so the hardware can schedule
+	 * io correctly
+	 */
+	sci_port_post_dummy_request(iport);
+}
+
+static void sci_port_invalidate_dummy_remote_node(struct isci_port *iport)
+{
+	struct isci_host *ihost = iport->owning_controller;
+	u8 phys_index = iport->physical_port_index;
+	union scu_remote_node_context *rnc;
+	u16 rni = iport->reserved_rni;
+	u32 command;
+
+	rnc = &ihost->remote_node_context_table[rni];
+
+	rnc->ssp.is_valid = false;
+
+	/* ensure the preceding tc abort request has reached the
+	 * controller and give it ample time to act before posting the rnc
+	 * invalidate
+	 */
+	readl(&ihost->smu_registers->interrupt_status); /* flush */
+	udelay(10);
+
+	command = SCU_CONTEXT_COMMAND_POST_RNC_INVALIDATE |
+		  phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni;
+
+	sci_controller_post_request(ihost, command);
+}
+
+/**
+ *
+ * @object: This is the object which is cast to a struct isci_port object.
+ *
+ * This method will perform the actions required by the struct isci_port on
+ * exiting the SCI_PORT_SUB_OPERATIONAL. This function reports
+ * the port not ready and suspends the port task scheduler. none
+ */
+static void sci_port_ready_substate_operational_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+	struct isci_host *ihost = iport->owning_controller;
+
+	/*
+	 * Kill the dummy task for this port if it has not yet posted
+	 * the hardware will treat this as a NOP and just return abort
+	 * complete.
+	 */
+	sci_port_abort_dummy_request(iport);
+
+	isci_port_not_ready(ihost, iport);
+
+	if (iport->ready_exit)
+		sci_port_invalidate_dummy_remote_node(iport);
+}
+
+static void sci_port_ready_substate_configuring_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+	struct isci_host *ihost = iport->owning_controller;
+
+	if (iport->active_phy_mask == 0) {
+		isci_port_not_ready(ihost, iport);
+
+		port_state_machine_change(iport,
+					  SCI_PORT_SUB_WAITING);
+	} else if (iport->started_request_count == 0)
+		port_state_machine_change(iport,
+					  SCI_PORT_SUB_OPERATIONAL);
+}
+
+static void sci_port_ready_substate_configuring_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+
+	sci_port_suspend_port_task_scheduler(iport);
+	if (iport->ready_exit)
+		sci_port_invalidate_dummy_remote_node(iport);
+}
+
+enum sci_status sci_port_start(struct isci_port *iport)
+{
+	struct isci_host *ihost = iport->owning_controller;
+	enum sci_status status = SCI_SUCCESS;
+	enum sci_port_states state;
+	u32 phy_mask;
+
+	state = iport->sm.current_state_id;
+	if (state != SCI_PORT_STOPPED) {
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	if (iport->assigned_device_count > 0) {
+		/* TODO This is a start failure operation because
+		 * there are still devices assigned to this port.
+		 * There must be no devices assigned to a port on a
+		 * start operation.
+		 */
+		return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+	}
+
+	if (iport->reserved_rni == SCU_DUMMY_INDEX) {
+		u16 rni = sci_remote_node_table_allocate_remote_node(
+				&ihost->available_remote_nodes, 1);
+
+		if (rni != SCU_DUMMY_INDEX)
+			sci_port_construct_dummy_rnc(iport, rni);
+		else
+			status = SCI_FAILURE_INSUFFICIENT_RESOURCES;
+		iport->reserved_rni = rni;
+	}
+
+	if (iport->reserved_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
+		u16 tag;
+
+		tag = isci_alloc_tag(ihost);
+		if (tag == SCI_CONTROLLER_INVALID_IO_TAG)
+			status = SCI_FAILURE_INSUFFICIENT_RESOURCES;
+		else
+			sci_port_construct_dummy_task(iport, tag);
+		iport->reserved_tag = tag;
+	}
+
+	if (status == SCI_SUCCESS) {
+		phy_mask = sci_port_get_phys(iport);
+
+		/*
+		 * There are one or more phys assigned to this port.  Make sure
+		 * the port's phy mask is in fact legal and supported by the
+		 * silicon.
+		 */
+		if (sci_port_is_phy_mask_valid(iport, phy_mask) == true) {
+			port_state_machine_change(iport,
+						  SCI_PORT_READY);
+
+			return SCI_SUCCESS;
+		}
+		status = SCI_FAILURE;
+	}
+
+	if (status != SCI_SUCCESS)
+		sci_port_destroy_dummy_resources(iport);
+
+	return status;
+}
+
+enum sci_status sci_port_stop(struct isci_port *iport)
+{
+	enum sci_port_states state;
+
+	state = iport->sm.current_state_id;
+	switch (state) {
+	case SCI_PORT_STOPPED:
+		return SCI_SUCCESS;
+	case SCI_PORT_SUB_WAITING:
+	case SCI_PORT_SUB_OPERATIONAL:
+	case SCI_PORT_SUB_CONFIGURING:
+	case SCI_PORT_RESETTING:
+		port_state_machine_change(iport,
+					  SCI_PORT_STOPPING);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+static enum sci_status sci_port_hard_reset(struct isci_port *iport, u32 timeout)
+{
+	enum sci_status status = SCI_FAILURE_INVALID_PHY;
+	struct isci_phy *iphy = NULL;
+	enum sci_port_states state;
+	u32 phy_index;
+
+	state = iport->sm.current_state_id;
+	if (state != SCI_PORT_SUB_OPERATIONAL) {
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	/* Select a phy on which we can send the hard reset request. */
+	for (phy_index = 0; phy_index < SCI_MAX_PHYS && !iphy; phy_index++) {
+		iphy = iport->phy_table[phy_index];
+		if (iphy && !sci_port_active_phy(iport, iphy)) {
+			/*
+			 * We found a phy but it is not ready select
+			 * different phy
+			 */
+			iphy = NULL;
+		}
+	}
+
+	/* If we have a phy then go ahead and start the reset procedure */
+	if (!iphy)
+		return status;
+	status = sci_phy_reset(iphy);
+
+	if (status != SCI_SUCCESS)
+		return status;
+
+	sci_mod_timer(&iport->timer, timeout);
+	iport->not_ready_reason = SCIC_PORT_NOT_READY_HARD_RESET_REQUESTED;
+
+	port_state_machine_change(iport, SCI_PORT_RESETTING);
+	return SCI_SUCCESS;
+}
+
+/**
+ * sci_port_add_phy() -
+ * @sci_port: This parameter specifies the port in which the phy will be added.
+ * @sci_phy: This parameter is the phy which is to be added to the port.
+ *
+ * This method will add a PHY to the selected port. This method returns an
+ * enum sci_status. SCI_SUCCESS the phy has been added to the port. Any other
+ * status is a failure to add the phy to the port.
+ */
+enum sci_status sci_port_add_phy(struct isci_port *iport,
+				      struct isci_phy *iphy)
+{
+	enum sci_status status;
+	enum sci_port_states state;
+
+	state = iport->sm.current_state_id;
+	switch (state) {
+	case SCI_PORT_STOPPED: {
+		struct sci_sas_address port_sas_address;
+
+		/* Read the port assigned SAS Address if there is one */
+		sci_port_get_sas_address(iport, &port_sas_address);
+
+		if (port_sas_address.high != 0 && port_sas_address.low != 0) {
+			struct sci_sas_address phy_sas_address;
+
+			/* Make sure that the PHY SAS Address matches the SAS Address
+			 * for this port
+			 */
+			sci_phy_get_sas_address(iphy, &phy_sas_address);
+
+			if (port_sas_address.high != phy_sas_address.high ||
+			    port_sas_address.low  != phy_sas_address.low)
+				return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+		}
+		return sci_port_set_phy(iport, iphy);
+	}
+	case SCI_PORT_SUB_WAITING:
+	case SCI_PORT_SUB_OPERATIONAL:
+		status = sci_port_set_phy(iport, iphy);
+
+		if (status != SCI_SUCCESS)
+			return status;
+
+		sci_port_general_link_up_handler(iport, iphy, true);
+		iport->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING;
+		port_state_machine_change(iport, SCI_PORT_SUB_CONFIGURING);
+
+		return status;
+	case SCI_PORT_SUB_CONFIGURING:
+		status = sci_port_set_phy(iport, iphy);
+
+		if (status != SCI_SUCCESS)
+			return status;
+		sci_port_general_link_up_handler(iport, iphy, true);
+
+		/* Re-enter the configuring state since this may be the last phy in
+		 * the port.
+		 */
+		port_state_machine_change(iport,
+					  SCI_PORT_SUB_CONFIGURING);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+/**
+ * sci_port_remove_phy() -
+ * @sci_port: This parameter specifies the port in which the phy will be added.
+ * @sci_phy: This parameter is the phy which is to be added to the port.
+ *
+ * This method will remove the PHY from the selected PORT. This method returns
+ * an enum sci_status. SCI_SUCCESS the phy has been removed from the port. Any
+ * other status is a failure to add the phy to the port.
+ */
+enum sci_status sci_port_remove_phy(struct isci_port *iport,
+					 struct isci_phy *iphy)
+{
+	enum sci_status status;
+	enum sci_port_states state;
+
+	state = iport->sm.current_state_id;
+
+	switch (state) {
+	case SCI_PORT_STOPPED:
+		return sci_port_clear_phy(iport, iphy);
+	case SCI_PORT_SUB_OPERATIONAL:
+		status = sci_port_clear_phy(iport, iphy);
+		if (status != SCI_SUCCESS)
+			return status;
+
+		sci_port_deactivate_phy(iport, iphy, true);
+		iport->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING;
+		port_state_machine_change(iport,
+					  SCI_PORT_SUB_CONFIGURING);
+		return SCI_SUCCESS;
+	case SCI_PORT_SUB_CONFIGURING:
+		status = sci_port_clear_phy(iport, iphy);
+
+		if (status != SCI_SUCCESS)
+			return status;
+		sci_port_deactivate_phy(iport, iphy, true);
+
+		/* Re-enter the configuring state since this may be the last phy in
+		 * the port
+		 */
+		port_state_machine_change(iport,
+					  SCI_PORT_SUB_CONFIGURING);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+enum sci_status sci_port_link_up(struct isci_port *iport,
+				      struct isci_phy *iphy)
+{
+	enum sci_port_states state;
+
+	state = iport->sm.current_state_id;
+	switch (state) {
+	case SCI_PORT_SUB_WAITING:
+		/* Since this is the first phy going link up for the port we
+		 * can just enable it and continue
+		 */
+		sci_port_activate_phy(iport, iphy, true);
+
+		port_state_machine_change(iport,
+					  SCI_PORT_SUB_OPERATIONAL);
+		return SCI_SUCCESS;
+	case SCI_PORT_SUB_OPERATIONAL:
+		sci_port_general_link_up_handler(iport, iphy, true);
+		return SCI_SUCCESS;
+	case SCI_PORT_RESETTING:
+		/* TODO We should  make  sure  that  the phy  that  has gone
+		 * link up is the same one on which we sent the reset.  It is
+		 * possible that the phy on which we sent  the reset is not the
+		 * one that has  gone  link up  and we  want to make sure that
+		 * phy being reset  comes  back.  Consider the case where a
+		 * reset is sent but before the hardware processes the reset it
+		 * get a link up on  the  port because of a hot plug event.
+		 * because  of  the reset request this phy will go link down
+		 * almost immediately.
+		 */
+
+		/* In the resetting state we don't notify the user regarding
+		 * link up and link down notifications.
+		 */
+		sci_port_general_link_up_handler(iport, iphy, false);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+enum sci_status sci_port_link_down(struct isci_port *iport,
+					struct isci_phy *iphy)
+{
+	enum sci_port_states state;
+
+	state = iport->sm.current_state_id;
+	switch (state) {
+	case SCI_PORT_SUB_OPERATIONAL:
+		sci_port_deactivate_phy(iport, iphy, true);
+
+		/* If there are no active phys left in the port, then
+		 * transition the port to the WAITING state until such time
+		 * as a phy goes link up
+		 */
+		if (iport->active_phy_mask == 0)
+			port_state_machine_change(iport,
+						  SCI_PORT_SUB_WAITING);
+		return SCI_SUCCESS;
+	case SCI_PORT_RESETTING:
+		/* In the resetting state we don't notify the user regarding
+		 * link up and link down notifications. */
+		sci_port_deactivate_phy(iport, iphy, false);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+enum sci_status sci_port_start_io(struct isci_port *iport,
+				  struct isci_remote_device *idev,
+				  struct isci_request *ireq)
+{
+	enum sci_port_states state;
+
+	state = iport->sm.current_state_id;
+	switch (state) {
+	case SCI_PORT_SUB_WAITING:
+		return SCI_FAILURE_INVALID_STATE;
+	case SCI_PORT_SUB_OPERATIONAL:
+		iport->started_request_count++;
+		return SCI_SUCCESS;
+	default:
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+enum sci_status sci_port_complete_io(struct isci_port *iport,
+				     struct isci_remote_device *idev,
+				     struct isci_request *ireq)
+{
+	enum sci_port_states state;
+
+	state = iport->sm.current_state_id;
+	switch (state) {
+	case SCI_PORT_STOPPED:
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	case SCI_PORT_STOPPING:
+		sci_port_decrement_request_count(iport);
+
+		if (iport->started_request_count == 0)
+			port_state_machine_change(iport,
+						  SCI_PORT_STOPPED);
+		break;
+	case SCI_PORT_READY:
+	case SCI_PORT_RESETTING:
+	case SCI_PORT_FAILED:
+	case SCI_PORT_SUB_WAITING:
+	case SCI_PORT_SUB_OPERATIONAL:
+		sci_port_decrement_request_count(iport);
+		break;
+	case SCI_PORT_SUB_CONFIGURING:
+		sci_port_decrement_request_count(iport);
+		if (iport->started_request_count == 0) {
+			port_state_machine_change(iport,
+						  SCI_PORT_SUB_OPERATIONAL);
+		}
+		break;
+	}
+	return SCI_SUCCESS;
+}
+
+static void sci_port_enable_port_task_scheduler(struct isci_port *iport)
+{
+	u32 pts_control_value;
+
+	 /* enable the port task scheduler in a suspended state */
+	pts_control_value = readl(&iport->port_task_scheduler_registers->control);
+	pts_control_value |= SCU_PTSxCR_GEN_BIT(ENABLE) | SCU_PTSxCR_GEN_BIT(SUSPEND);
+	writel(pts_control_value, &iport->port_task_scheduler_registers->control);
+}
+
+static void sci_port_disable_port_task_scheduler(struct isci_port *iport)
+{
+	u32 pts_control_value;
+
+	pts_control_value = readl(&iport->port_task_scheduler_registers->control);
+	pts_control_value &=
+		~(SCU_PTSxCR_GEN_BIT(ENABLE) | SCU_PTSxCR_GEN_BIT(SUSPEND));
+	writel(pts_control_value, &iport->port_task_scheduler_registers->control);
+}
+
+static void sci_port_post_dummy_remote_node(struct isci_port *iport)
+{
+	struct isci_host *ihost = iport->owning_controller;
+	u8 phys_index = iport->physical_port_index;
+	union scu_remote_node_context *rnc;
+	u16 rni = iport->reserved_rni;
+	u32 command;
+
+	rnc = &ihost->remote_node_context_table[rni];
+	rnc->ssp.is_valid = true;
+
+	command = SCU_CONTEXT_COMMAND_POST_RNC_32 |
+		  phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni;
+
+	sci_controller_post_request(ihost, command);
+
+	/* ensure hardware has seen the post rnc command and give it
+	 * ample time to act before sending the suspend
+	 */
+	readl(&ihost->smu_registers->interrupt_status); /* flush */
+	udelay(10);
+
+	command = SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX_RX |
+		  phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni;
+
+	sci_controller_post_request(ihost, command);
+}
+
+static void sci_port_stopped_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+
+	if (iport->sm.previous_state_id == SCI_PORT_STOPPING) {
+		/*
+		 * If we enter this state becasuse of a request to stop
+		 * the port then we want to disable the hardwares port
+		 * task scheduler. */
+		sci_port_disable_port_task_scheduler(iport);
+	}
+}
+
+static void sci_port_stopped_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+
+	/* Enable and suspend the port task scheduler */
+	sci_port_enable_port_task_scheduler(iport);
+}
+
+static void sci_port_ready_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+	struct isci_host *ihost = iport->owning_controller;
+	u32 prev_state;
+
+	prev_state = iport->sm.previous_state_id;
+	if (prev_state  == SCI_PORT_RESETTING)
+		isci_port_hard_reset_complete(iport, SCI_SUCCESS);
+	else
+		isci_port_not_ready(ihost, iport);
+
+	/* Post and suspend the dummy remote node context for this port. */
+	sci_port_post_dummy_remote_node(iport);
+
+	/* Start the ready substate machine */
+	port_state_machine_change(iport,
+				  SCI_PORT_SUB_WAITING);
+}
+
+static void sci_port_resetting_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+
+	sci_del_timer(&iport->timer);
+}
+
+static void sci_port_stopping_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+
+	sci_del_timer(&iport->timer);
+
+	sci_port_destroy_dummy_resources(iport);
+}
+
+static void sci_port_failed_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+
+	isci_port_hard_reset_complete(iport, SCI_FAILURE_TIMEOUT);
+}
+
+/* --------------------------------------------------------------------------- */
+
+static const struct sci_base_state sci_port_state_table[] = {
+	[SCI_PORT_STOPPED] = {
+		.enter_state = sci_port_stopped_state_enter,
+		.exit_state  = sci_port_stopped_state_exit
+	},
+	[SCI_PORT_STOPPING] = {
+		.exit_state  = sci_port_stopping_state_exit
+	},
+	[SCI_PORT_READY] = {
+		.enter_state = sci_port_ready_state_enter,
+	},
+	[SCI_PORT_SUB_WAITING] = {
+		.enter_state = sci_port_ready_substate_waiting_enter,
+	},
+	[SCI_PORT_SUB_OPERATIONAL] = {
+		.enter_state = sci_port_ready_substate_operational_enter,
+		.exit_state  = sci_port_ready_substate_operational_exit
+	},
+	[SCI_PORT_SUB_CONFIGURING] = {
+		.enter_state = sci_port_ready_substate_configuring_enter,
+		.exit_state  = sci_port_ready_substate_configuring_exit
+	},
+	[SCI_PORT_RESETTING] = {
+		.exit_state  = sci_port_resetting_state_exit
+	},
+	[SCI_PORT_FAILED] = {
+		.enter_state = sci_port_failed_state_enter,
+	}
+};
+
+void sci_port_construct(struct isci_port *iport, u8 index,
+			     struct isci_host *ihost)
+{
+	sci_init_sm(&iport->sm, sci_port_state_table, SCI_PORT_STOPPED);
+
+	iport->logical_port_index  = SCIC_SDS_DUMMY_PORT;
+	iport->physical_port_index = index;
+	iport->active_phy_mask     = 0;
+	iport->ready_exit	      = false;
+
+	iport->owning_controller = ihost;
+
+	iport->started_request_count = 0;
+	iport->assigned_device_count = 0;
+
+	iport->reserved_rni = SCU_DUMMY_INDEX;
+	iport->reserved_tag = SCI_CONTROLLER_INVALID_IO_TAG;
+
+	sci_init_timer(&iport->timer, port_timeout);
+
+	iport->port_task_scheduler_registers = NULL;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++)
+		iport->phy_table[index] = NULL;
+}
+
+void isci_port_init(struct isci_port *iport, struct isci_host *ihost, int index)
+{
+	INIT_LIST_HEAD(&iport->remote_dev_list);
+	INIT_LIST_HEAD(&iport->domain_dev_list);
+	spin_lock_init(&iport->state_lock);
+	init_completion(&iport->start_complete);
+	iport->isci_host = ihost;
+	isci_port_change_state(iport, isci_freed);
+	atomic_set(&iport->event, 0);
+}
+
+/**
+ * isci_port_get_state() - This function gets the status of the port object.
+ * @isci_port: This parameter points to the isci_port object
+ *
+ * status of the object as a isci_status enum.
+ */
+enum isci_status isci_port_get_state(
+	struct isci_port *isci_port)
+{
+	return isci_port->status;
+}
+
+void sci_port_broadcast_change_received(struct isci_port *iport, struct isci_phy *iphy)
+{
+	struct isci_host *ihost = iport->owning_controller;
+
+	/* notify the user. */
+	isci_port_bc_change_received(ihost, iport, iphy);
+}
+
+int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *iport,
+				 struct isci_phy *iphy)
+{
+	unsigned long flags;
+	enum sci_status status;
+	int idx, ret = TMF_RESP_FUNC_COMPLETE;
+
+	dev_dbg(&ihost->pdev->dev, "%s: iport = %p\n",
+		__func__, iport);
+
+	init_completion(&iport->hard_reset_complete);
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	#define ISCI_PORT_RESET_TIMEOUT SCIC_SDS_SIGNATURE_FIS_TIMEOUT
+	status = sci_port_hard_reset(iport, ISCI_PORT_RESET_TIMEOUT);
+
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+	if (status == SCI_SUCCESS) {
+		wait_for_completion(&iport->hard_reset_complete);
+
+		dev_dbg(&ihost->pdev->dev,
+			"%s: iport = %p; hard reset completion\n",
+			__func__, iport);
+
+		if (iport->hard_reset_status != SCI_SUCCESS)
+			ret = TMF_RESP_FUNC_FAILED;
+	} else {
+		ret = TMF_RESP_FUNC_FAILED;
+
+		dev_err(&ihost->pdev->dev,
+			"%s: iport = %p; sci_port_hard_reset call"
+			" failed 0x%x\n",
+			__func__, iport, status);
+
+	}
+
+	/* If the hard reset for the port has failed, consider this
+	 * the same as link failures on all phys in the port.
+	 */
+	if (ret != TMF_RESP_FUNC_COMPLETE) {
+
+		dev_err(&ihost->pdev->dev,
+			"%s: iport = %p; hard reset failed "
+			"(0x%x) - driving explicit link fail for all phys\n",
+			__func__, iport, iport->hard_reset_status);
+
+		/* Down all phys in the port. */
+		spin_lock_irqsave(&ihost->scic_lock, flags);
+		for (idx = 0; idx < SCI_MAX_PHYS; ++idx) {
+			struct isci_phy *iphy = iport->phy_table[idx];
+
+			if (!iphy)
+				continue;
+			sci_phy_stop(iphy);
+			sci_phy_start(iphy);
+		}
+		spin_unlock_irqrestore(&ihost->scic_lock, flags);
+	}
+	return ret;
+}
+
+/**
+ * isci_port_deformed() - This function is called by libsas when a port becomes
+ *    inactive.
+ * @phy: This parameter specifies the libsas phy with the inactive port.
+ *
+ */
+void isci_port_deformed(struct asd_sas_phy *phy)
+{
+	pr_debug("%s: sas_phy = %p\n", __func__, phy);
+}
+
+/**
+ * isci_port_formed() - This function is called by libsas when a port becomes
+ *    active.
+ * @phy: This parameter specifies the libsas phy with the active port.
+ *
+ */
+void isci_port_formed(struct asd_sas_phy *phy)
+{
+	pr_debug("%s: sas_phy = %p, sas_port = %p\n", __func__, phy, phy->port);
+}
diff --git a/drivers/scsi/isci/port.h b/drivers/scsi/isci/port.h
new file mode 100644
index 0000000..b50ecd4
--- /dev/null
+++ b/drivers/scsi/isci/port.h
@@ -0,0 +1,306 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _ISCI_PORT_H_
+#define _ISCI_PORT_H_
+
+#include <scsi/libsas.h>
+#include "isci.h"
+#include "sas.h"
+#include "phy.h"
+
+#define SCIC_SDS_DUMMY_PORT   0xFF
+
+struct isci_phy;
+struct isci_host;
+
+enum isci_status {
+	isci_freed        = 0x00,
+	isci_starting     = 0x01,
+	isci_ready        = 0x02,
+	isci_ready_for_io = 0x03,
+	isci_stopping     = 0x04,
+	isci_stopped      = 0x05,
+};
+
+/**
+ * struct isci_port - isci direct attached sas port object
+ * @event: counts bcns and port stop events (for bcn filtering)
+ * @ready_exit: several states constitute 'ready'. When exiting ready we
+ *              need to take extra port-teardown actions that are
+ *              skipped when exiting to another 'ready' state.
+ * @logical_port_index: software port index
+ * @physical_port_index: hardware port index
+ * @active_phy_mask: identifies phy members
+ * @reserved_tag:
+ * @reserved_rni: reserver for port task scheduler workaround
+ * @started_request_count: reference count for outstanding commands
+ * @not_ready_reason: set during state transitions and notified
+ * @timer: timeout start/stop operations
+ */
+struct isci_port {
+	enum isci_status status;
+	#define IPORT_BCN_BLOCKED 0
+	#define IPORT_BCN_PENDING 1
+	unsigned long flags;
+	atomic_t event;
+	struct isci_host *isci_host;
+	struct asd_sas_port sas_port;
+	struct list_head remote_dev_list;
+	spinlock_t state_lock;
+	struct list_head domain_dev_list;
+	struct completion start_complete;
+	struct completion hard_reset_complete;
+	enum sci_status hard_reset_status;
+	struct sci_base_state_machine sm;
+	bool ready_exit;
+	u8 logical_port_index;
+	u8 physical_port_index;
+	u8 active_phy_mask;
+	u16 reserved_rni;
+	u16 reserved_tag;
+	u32 started_request_count;
+	u32 assigned_device_count;
+	u32 not_ready_reason;
+	struct isci_phy *phy_table[SCI_MAX_PHYS];
+	struct isci_host *owning_controller;
+	struct sci_timer timer;
+	struct scu_port_task_scheduler_registers __iomem *port_task_scheduler_registers;
+	/* XXX rework: only one register, no need to replicate per-port */
+	u32 __iomem *port_pe_configuration_register;
+	struct scu_viit_entry __iomem *viit_registers;
+};
+
+enum sci_port_not_ready_reason_code {
+	SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS,
+	SCIC_PORT_NOT_READY_HARD_RESET_REQUESTED,
+	SCIC_PORT_NOT_READY_INVALID_PORT_CONFIGURATION,
+	SCIC_PORT_NOT_READY_RECONFIGURING,
+
+	SCIC_PORT_NOT_READY_REASON_CODE_MAX
+};
+
+struct sci_port_end_point_properties {
+	struct sci_sas_address sas_address;
+	struct sci_phy_proto protocols;
+};
+
+struct sci_port_properties {
+	u32 index;
+	struct sci_port_end_point_properties local;
+	struct sci_port_end_point_properties remote;
+	u32 phy_mask;
+};
+
+/**
+ * enum sci_port_states - This enumeration depicts all the states for the
+ *    common port state machine.
+ *
+ *
+ */
+enum sci_port_states {
+	/**
+	 * This state indicates that the port has successfully been stopped.
+	 * In this state no new IO operations are permitted.
+	 * This state is entered from the STOPPING state.
+	 */
+	SCI_PORT_STOPPED,
+
+	/**
+	 * This state indicates that the port is in the process of stopping.
+	 * In this state no new IO operations are permitted, but existing IO
+	 * operations are allowed to complete.
+	 * This state is entered from the READY state.
+	 */
+	SCI_PORT_STOPPING,
+
+	/**
+	 * This state indicates the port is now ready.  Thus, the user is
+	 * able to perform IO operations on this port.
+	 * This state is entered from the STARTING state.
+	 */
+	SCI_PORT_READY,
+
+	/**
+	 * The substate where the port is started and ready but has no
+	 * active phys.
+	 */
+	SCI_PORT_SUB_WAITING,
+
+	/**
+	 * The substate where the port is started and ready and there is
+	 * at least one phy operational.
+	 */
+	SCI_PORT_SUB_OPERATIONAL,
+
+	/**
+	 * The substate where the port is started and there was an
+	 * add/remove phy event.  This state is only used in Automatic
+	 * Port Configuration Mode (APC)
+	 */
+	SCI_PORT_SUB_CONFIGURING,
+
+	/**
+	 * This state indicates the port is in the process of performing a hard
+	 * reset.  Thus, the user is unable to perform IO operations on this
+	 * port.
+	 * This state is entered from the READY state.
+	 */
+	SCI_PORT_RESETTING,
+
+	/**
+	 * This state indicates the port has failed a reset request.  This state
+	 * is entered when a port reset request times out.
+	 * This state is entered from the RESETTING state.
+	 */
+	SCI_PORT_FAILED,
+
+
+};
+
+static inline void sci_port_decrement_request_count(struct isci_port *iport)
+{
+	if (WARN_ONCE(iport->started_request_count == 0,
+		       "%s: tried to decrement started_request_count past 0!?",
+			__func__))
+		/* pass */;
+	else
+		iport->started_request_count--;
+}
+
+#define sci_port_active_phy(port, phy) \
+	(((port)->active_phy_mask & (1 << (phy)->phy_index)) != 0)
+
+void sci_port_construct(
+	struct isci_port *iport,
+	u8 port_index,
+	struct isci_host *ihost);
+
+enum sci_status sci_port_start(struct isci_port *iport);
+enum sci_status sci_port_stop(struct isci_port *iport);
+
+enum sci_status sci_port_add_phy(
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+enum sci_status sci_port_remove_phy(
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+void sci_port_setup_transports(
+	struct isci_port *iport,
+	u32 device_id);
+
+void isci_port_bcn_enable(struct isci_host *, struct isci_port *);
+
+void sci_port_deactivate_phy(
+	struct isci_port *iport,
+	struct isci_phy *iphy,
+	bool do_notify_user);
+
+bool sci_port_link_detected(
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+enum sci_status sci_port_link_up(struct isci_port *iport,
+				      struct isci_phy *iphy);
+enum sci_status sci_port_link_down(struct isci_port *iport,
+					struct isci_phy *iphy);
+
+struct isci_request;
+struct isci_remote_device;
+enum sci_status sci_port_start_io(
+	struct isci_port *iport,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+enum sci_status sci_port_complete_io(
+	struct isci_port *iport,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+enum sas_linkrate sci_port_get_max_allowed_speed(
+	struct isci_port *iport);
+
+void sci_port_broadcast_change_received(
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+bool sci_port_is_valid_phy_assignment(
+	struct isci_port *iport,
+	u32 phy_index);
+
+void sci_port_get_sas_address(
+	struct isci_port *iport,
+	struct sci_sas_address *sas_address);
+
+void sci_port_get_attached_sas_address(
+	struct isci_port *iport,
+	struct sci_sas_address *sas_address);
+
+enum isci_status isci_port_get_state(
+	struct isci_port *isci_port);
+
+void isci_port_formed(struct asd_sas_phy *);
+void isci_port_deformed(struct asd_sas_phy *);
+
+void isci_port_init(
+	struct isci_port *port,
+	struct isci_host *host,
+	int index);
+
+int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *iport,
+				 struct isci_phy *iphy);
+#endif /* !defined(_ISCI_PORT_H_) */
diff --git a/drivers/scsi/isci/port_config.c b/drivers/scsi/isci/port_config.c
new file mode 100644
index 0000000..486b113
--- /dev/null
+++ b/drivers/scsi/isci/port_config.c
@@ -0,0 +1,754 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "host.h"
+
+#define SCIC_SDS_MPC_RECONFIGURATION_TIMEOUT    (10)
+#define SCIC_SDS_APC_RECONFIGURATION_TIMEOUT    (10)
+#define SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION  (100)
+
+enum SCIC_SDS_APC_ACTIVITY {
+	SCIC_SDS_APC_SKIP_PHY,
+	SCIC_SDS_APC_ADD_PHY,
+	SCIC_SDS_APC_START_TIMER,
+
+	SCIC_SDS_APC_ACTIVITY_MAX
+};
+
+/*
+ * ******************************************************************************
+ * General port configuration agent routines
+ * ****************************************************************************** */
+
+/**
+ *
+ * @address_one: A SAS Address to be compared.
+ * @address_two: A SAS Address to be compared.
+ *
+ * Compare the two SAS Address and if SAS Address One is greater than SAS
+ * Address Two then return > 0 else if SAS Address One is less than SAS Address
+ * Two return < 0 Otherwise they are the same return 0 A signed value of x > 0
+ * > y where x is returned for Address One > Address Two y is returned for
+ * Address One < Address Two 0 is returned ofr Address One = Address Two
+ */
+static s32 sci_sas_address_compare(
+	struct sci_sas_address address_one,
+	struct sci_sas_address address_two)
+{
+	if (address_one.high > address_two.high) {
+		return 1;
+	} else if (address_one.high < address_two.high) {
+		return -1;
+	} else if (address_one.low > address_two.low) {
+		return 1;
+	} else if (address_one.low < address_two.low) {
+		return -1;
+	}
+
+	/* The two SAS Address must be identical */
+	return 0;
+}
+
+/**
+ *
+ * @controller: The controller object used for the port search.
+ * @phy: The phy object to match.
+ *
+ * This routine will find a matching port for the phy.  This means that the
+ * port and phy both have the same broadcast sas address and same received sas
+ * address. The port address or the NULL if there is no matching
+ * port. port address if the port can be found to match the phy.
+ * NULL if there is no matching port for the phy.
+ */
+static struct isci_port *sci_port_configuration_agent_find_port(
+	struct isci_host *ihost,
+	struct isci_phy *iphy)
+{
+	u8 i;
+	struct sci_sas_address port_sas_address;
+	struct sci_sas_address port_attached_device_address;
+	struct sci_sas_address phy_sas_address;
+	struct sci_sas_address phy_attached_device_address;
+
+	/*
+	 * Since this phy can be a member of a wide port check to see if one or
+	 * more phys match the sent and received SAS address as this phy in which
+	 * case it should participate in the same port.
+	 */
+	sci_phy_get_sas_address(iphy, &phy_sas_address);
+	sci_phy_get_attached_sas_address(iphy, &phy_attached_device_address);
+
+	for (i = 0; i < ihost->logical_port_entries; i++) {
+		struct isci_port *iport = &ihost->ports[i];
+
+		sci_port_get_sas_address(iport, &port_sas_address);
+		sci_port_get_attached_sas_address(iport, &port_attached_device_address);
+
+		if (sci_sas_address_compare(port_sas_address, phy_sas_address) == 0 &&
+		    sci_sas_address_compare(port_attached_device_address, phy_attached_device_address) == 0)
+			return iport;
+	}
+
+	return NULL;
+}
+
+/**
+ *
+ * @controller: This is the controller object that contains the port agent
+ * @port_agent: This is the port configruation agent for the controller.
+ *
+ * This routine will validate the port configuration is correct for the SCU
+ * hardware.  The SCU hardware allows for port configurations as follows. LP0
+ * -> (PE0), (PE0, PE1), (PE0, PE1, PE2, PE3) LP1 -> (PE1) LP2 -> (PE2), (PE2,
+ * PE3) LP3 -> (PE3) enum sci_status SCI_SUCCESS the port configuration is valid for
+ * this port configuration agent. SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION
+ * the port configuration is not valid for this port configuration agent.
+ */
+static enum sci_status sci_port_configuration_agent_validate_ports(
+	struct isci_host *ihost,
+	struct sci_port_configuration_agent *port_agent)
+{
+	struct sci_sas_address first_address;
+	struct sci_sas_address second_address;
+
+	/*
+	 * Sanity check the max ranges for all the phys the max index
+	 * is always equal to the port range index */
+	if (port_agent->phy_valid_port_range[0].max_index != 0 ||
+	    port_agent->phy_valid_port_range[1].max_index != 1 ||
+	    port_agent->phy_valid_port_range[2].max_index != 2 ||
+	    port_agent->phy_valid_port_range[3].max_index != 3)
+		return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+
+	/*
+	 * This is a request to configure a single x4 port or at least attempt
+	 * to make all the phys into a single port */
+	if (port_agent->phy_valid_port_range[0].min_index == 0 &&
+	    port_agent->phy_valid_port_range[1].min_index == 0 &&
+	    port_agent->phy_valid_port_range[2].min_index == 0 &&
+	    port_agent->phy_valid_port_range[3].min_index == 0)
+		return SCI_SUCCESS;
+
+	/*
+	 * This is a degenerate case where phy 1 and phy 2 are assigned
+	 * to the same port this is explicitly disallowed by the hardware
+	 * unless they are part of the same x4 port and this condition was
+	 * already checked above. */
+	if (port_agent->phy_valid_port_range[2].min_index == 1) {
+		return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+	}
+
+	/*
+	 * PE0 and PE3 can never have the same SAS Address unless they
+	 * are part of the same x4 wide port and we have already checked
+	 * for this condition. */
+	sci_phy_get_sas_address(&ihost->phys[0], &first_address);
+	sci_phy_get_sas_address(&ihost->phys[3], &second_address);
+
+	if (sci_sas_address_compare(first_address, second_address) == 0) {
+		return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+	}
+
+	/*
+	 * PE0 and PE1 are configured into a 2x1 ports make sure that the
+	 * SAS Address for PE0 and PE2 are different since they can not be
+	 * part of the same port. */
+	if (port_agent->phy_valid_port_range[0].min_index == 0 &&
+	    port_agent->phy_valid_port_range[1].min_index == 1) {
+		sci_phy_get_sas_address(&ihost->phys[0], &first_address);
+		sci_phy_get_sas_address(&ihost->phys[2], &second_address);
+
+		if (sci_sas_address_compare(first_address, second_address) == 0) {
+			return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+		}
+	}
+
+	/*
+	 * PE2 and PE3 are configured into a 2x1 ports make sure that the
+	 * SAS Address for PE1 and PE3 are different since they can not be
+	 * part of the same port. */
+	if (port_agent->phy_valid_port_range[2].min_index == 2 &&
+	    port_agent->phy_valid_port_range[3].min_index == 3) {
+		sci_phy_get_sas_address(&ihost->phys[1], &first_address);
+		sci_phy_get_sas_address(&ihost->phys[3], &second_address);
+
+		if (sci_sas_address_compare(first_address, second_address) == 0) {
+			return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+		}
+	}
+
+	return SCI_SUCCESS;
+}
+
+/*
+ * ******************************************************************************
+ * Manual port configuration agent routines
+ * ****************************************************************************** */
+
+/* verify all of the phys in the same port are using the same SAS address */
+static enum sci_status
+sci_mpc_agent_validate_phy_configuration(struct isci_host *ihost,
+					      struct sci_port_configuration_agent *port_agent)
+{
+	u32 phy_mask;
+	u32 assigned_phy_mask;
+	struct sci_sas_address sas_address;
+	struct sci_sas_address phy_assigned_address;
+	u8 port_index;
+	u8 phy_index;
+
+	assigned_phy_mask = 0;
+	sas_address.high = 0;
+	sas_address.low = 0;
+
+	for (port_index = 0; port_index < SCI_MAX_PORTS; port_index++) {
+		phy_mask = ihost->oem_parameters.ports[port_index].phy_mask;
+
+		if (!phy_mask)
+			continue;
+		/*
+		 * Make sure that one or more of the phys were not already assinged to
+		 * a different port. */
+		if ((phy_mask & ~assigned_phy_mask) == 0) {
+			return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+		}
+
+		/* Find the starting phy index for this round through the loop */
+		for (phy_index = 0; phy_index < SCI_MAX_PHYS; phy_index++) {
+			if ((phy_mask & (1 << phy_index)) == 0)
+				continue;
+			sci_phy_get_sas_address(&ihost->phys[phy_index],
+						     &sas_address);
+
+			/*
+			 * The phy_index can be used as the starting point for the
+			 * port range since the hardware starts all logical ports
+			 * the same as the PE index. */
+			port_agent->phy_valid_port_range[phy_index].min_index = port_index;
+			port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
+
+			if (phy_index != port_index) {
+				return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+			}
+
+			break;
+		}
+
+		/*
+		 * See how many additional phys are being added to this logical port.
+		 * Note: We have not moved the current phy_index so we will actually
+		 *       compare the startting phy with itself.
+		 *       This is expected and required to add the phy to the port. */
+		while (phy_index < SCI_MAX_PHYS) {
+			if ((phy_mask & (1 << phy_index)) == 0)
+				continue;
+			sci_phy_get_sas_address(&ihost->phys[phy_index],
+						     &phy_assigned_address);
+
+			if (sci_sas_address_compare(sas_address, phy_assigned_address) != 0) {
+				/*
+				 * The phy mask specified that this phy is part of the same port
+				 * as the starting phy and it is not so fail this configuration */
+				return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+			}
+
+			port_agent->phy_valid_port_range[phy_index].min_index = port_index;
+			port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
+
+			sci_port_add_phy(&ihost->ports[port_index],
+					      &ihost->phys[phy_index]);
+
+			assigned_phy_mask |= (1 << phy_index);
+		}
+
+		phy_index++;
+	}
+
+	return sci_port_configuration_agent_validate_ports(ihost, port_agent);
+}
+
+static void mpc_agent_timeout(unsigned long data)
+{
+	u8 index;
+	struct sci_timer *tmr = (struct sci_timer *)data;
+	struct sci_port_configuration_agent *port_agent;
+	struct isci_host *ihost;
+	unsigned long flags;
+	u16 configure_phy_mask;
+
+	port_agent = container_of(tmr, typeof(*port_agent), timer);
+	ihost = container_of(port_agent, typeof(*ihost), port_agent);
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	if (tmr->cancel)
+		goto done;
+
+	port_agent->timer_pending = false;
+
+	/* Find the mask of phys that are reported read but as yet unconfigured into a port */
+	configure_phy_mask = ~port_agent->phy_configured_mask & port_agent->phy_ready_mask;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		struct isci_phy *iphy = &ihost->phys[index];
+
+		if (configure_phy_mask & (1 << index)) {
+			port_agent->link_up_handler(ihost, port_agent,
+						    phy_get_non_dummy_port(iphy),
+						    iphy);
+		}
+	}
+
+done:
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
+
+static void sci_mpc_agent_link_up(struct isci_host *ihost,
+				       struct sci_port_configuration_agent *port_agent,
+				       struct isci_port *iport,
+				       struct isci_phy *iphy)
+{
+	/* If the port is NULL then the phy was not assigned to a port.
+	 * This is because the phy was not given the same SAS Address as
+	 * the other PHYs in the port.
+	 */
+	if (!iport)
+		return;
+
+	port_agent->phy_ready_mask |= (1 << iphy->phy_index);
+	sci_port_link_up(iport, iphy);
+	if ((iport->active_phy_mask & (1 << iphy->phy_index)))
+		port_agent->phy_configured_mask |= (1 << iphy->phy_index);
+}
+
+/**
+ *
+ * @controller: This is the controller object that receives the link down
+ *    notification.
+ * @port: This is the port object associated with the phy.  If the is no
+ *    associated port this is an NULL.  The port is an invalid
+ *    handle only if the phy was never port of this port.  This happens when
+ *    the phy is not broadcasting the same SAS address as the other phys in the
+ *    assigned port.
+ * @phy: This is the phy object which has gone link down.
+ *
+ * This function handles the manual port configuration link down notifications.
+ * Since all ports and phys are associated at initialization time we just turn
+ * around and notifiy the port object of the link down event.  If this PHY is
+ * not associated with a port there is no action taken. Is it possible to get a
+ * link down notification from a phy that has no assocoated port?
+ */
+static void sci_mpc_agent_link_down(
+	struct isci_host *ihost,
+	struct sci_port_configuration_agent *port_agent,
+	struct isci_port *iport,
+	struct isci_phy *iphy)
+{
+	if (iport != NULL) {
+		/*
+		 * If we can form a new port from the remainder of the phys
+		 * then we want to start the timer to allow the SCI User to
+		 * cleanup old devices and rediscover the port before
+		 * rebuilding the port with the phys that remain in the ready
+		 * state.
+		 */
+		port_agent->phy_ready_mask &= ~(1 << iphy->phy_index);
+		port_agent->phy_configured_mask &= ~(1 << iphy->phy_index);
+
+		/*
+		 * Check to see if there are more phys waiting to be
+		 * configured into a port. If there are allow the SCI User
+		 * to tear down this port, if necessary, and then reconstruct
+		 * the port after the timeout.
+		 */
+		if ((port_agent->phy_configured_mask == 0x0000) &&
+		    (port_agent->phy_ready_mask != 0x0000) &&
+		    !port_agent->timer_pending) {
+			port_agent->timer_pending = true;
+
+			sci_mod_timer(&port_agent->timer,
+				      SCIC_SDS_MPC_RECONFIGURATION_TIMEOUT);
+		}
+
+		sci_port_link_down(iport, iphy);
+	}
+}
+
+/* verify phys are assigned a valid SAS address for automatic port
+ * configuration mode.
+ */
+static enum sci_status
+sci_apc_agent_validate_phy_configuration(struct isci_host *ihost,
+					      struct sci_port_configuration_agent *port_agent)
+{
+	u8 phy_index;
+	u8 port_index;
+	struct sci_sas_address sas_address;
+	struct sci_sas_address phy_assigned_address;
+
+	phy_index = 0;
+
+	while (phy_index < SCI_MAX_PHYS) {
+		port_index = phy_index;
+
+		/* Get the assigned SAS Address for the first PHY on the controller. */
+		sci_phy_get_sas_address(&ihost->phys[phy_index],
+					    &sas_address);
+
+		while (++phy_index < SCI_MAX_PHYS) {
+			sci_phy_get_sas_address(&ihost->phys[phy_index],
+						     &phy_assigned_address);
+
+			/* Verify each of the SAS address are all the same for every PHY */
+			if (sci_sas_address_compare(sas_address, phy_assigned_address) == 0) {
+				port_agent->phy_valid_port_range[phy_index].min_index = port_index;
+				port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
+			} else {
+				port_agent->phy_valid_port_range[phy_index].min_index = phy_index;
+				port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
+				break;
+			}
+		}
+	}
+
+	return sci_port_configuration_agent_validate_ports(ihost, port_agent);
+}
+
+static void sci_apc_agent_configure_ports(struct isci_host *ihost,
+					       struct sci_port_configuration_agent *port_agent,
+					       struct isci_phy *iphy,
+					       bool start_timer)
+{
+	u8 port_index;
+	enum sci_status status;
+	struct isci_port *iport;
+	enum SCIC_SDS_APC_ACTIVITY apc_activity = SCIC_SDS_APC_SKIP_PHY;
+
+	iport = sci_port_configuration_agent_find_port(ihost, iphy);
+
+	if (iport) {
+		if (sci_port_is_valid_phy_assignment(iport, iphy->phy_index))
+			apc_activity = SCIC_SDS_APC_ADD_PHY;
+		else
+			apc_activity = SCIC_SDS_APC_SKIP_PHY;
+	} else {
+		/*
+		 * There is no matching Port for this PHY so lets search through the
+		 * Ports and see if we can add the PHY to its own port or maybe start
+		 * the timer and wait to see if a wider port can be made.
+		 *
+		 * Note the break when we reach the condition of the port id == phy id */
+		for (port_index = port_agent->phy_valid_port_range[iphy->phy_index].min_index;
+		     port_index <= port_agent->phy_valid_port_range[iphy->phy_index].max_index;
+		     port_index++) {
+
+			iport = &ihost->ports[port_index];
+
+			/* First we must make sure that this PHY can be added to this Port. */
+			if (sci_port_is_valid_phy_assignment(iport, iphy->phy_index)) {
+				/*
+				 * Port contains a PHY with a greater PHY ID than the current
+				 * PHY that has gone link up.  This phy can not be part of any
+				 * port so skip it and move on. */
+				if (iport->active_phy_mask > (1 << iphy->phy_index)) {
+					apc_activity = SCIC_SDS_APC_SKIP_PHY;
+					break;
+				}
+
+				/*
+				 * We have reached the end of our Port list and have not found
+				 * any reason why we should not either add the PHY to the port
+				 * or wait for more phys to become active. */
+				if (iport->physical_port_index == iphy->phy_index) {
+					/*
+					 * The Port either has no active PHYs.
+					 * Consider that if the port had any active PHYs we would have
+					 * or active PHYs with
+					 * a lower PHY Id than this PHY. */
+					if (apc_activity != SCIC_SDS_APC_START_TIMER) {
+						apc_activity = SCIC_SDS_APC_ADD_PHY;
+					}
+
+					break;
+				}
+
+				/*
+				 * The current Port has no active PHYs and this PHY could be part
+				 * of this Port.  Since we dont know as yet setup to start the
+				 * timer and see if there is a better configuration. */
+				if (iport->active_phy_mask == 0) {
+					apc_activity = SCIC_SDS_APC_START_TIMER;
+				}
+			} else if (iport->active_phy_mask != 0) {
+				/*
+				 * The Port has an active phy and the current Phy can not
+				 * participate in this port so skip the PHY and see if
+				 * there is a better configuration. */
+				apc_activity = SCIC_SDS_APC_SKIP_PHY;
+			}
+		}
+	}
+
+	/*
+	 * Check to see if the start timer operations should instead map to an
+	 * add phy operation.  This is caused because we have been waiting to
+	 * add a phy to a port but could not becuase the automatic port
+	 * configuration engine had a choice of possible ports for the phy.
+	 * Since we have gone through a timeout we are going to restrict the
+	 * choice to the smallest possible port. */
+	if (
+		(start_timer == false)
+		&& (apc_activity == SCIC_SDS_APC_START_TIMER)
+		) {
+		apc_activity = SCIC_SDS_APC_ADD_PHY;
+	}
+
+	switch (apc_activity) {
+	case SCIC_SDS_APC_ADD_PHY:
+		status = sci_port_add_phy(iport, iphy);
+
+		if (status == SCI_SUCCESS) {
+			port_agent->phy_configured_mask |= (1 << iphy->phy_index);
+		}
+		break;
+
+	case SCIC_SDS_APC_START_TIMER:
+		/*
+		 * This can occur for either a link down event, or a link
+		 * up event where we cannot yet tell the port to which a
+		 * phy belongs.
+		 */
+		if (port_agent->timer_pending)
+			sci_del_timer(&port_agent->timer);
+
+		port_agent->timer_pending = true;
+		sci_mod_timer(&port_agent->timer,
+			      SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION);
+		break;
+
+	case SCIC_SDS_APC_SKIP_PHY:
+	default:
+		/* do nothing the PHY can not be made part of a port at this time. */
+		break;
+	}
+}
+
+/**
+ * sci_apc_agent_link_up - handle apc link up events
+ * @scic: This is the controller object that receives the link up
+ *    notification.
+ * @sci_port: This is the port object associated with the phy.  If the is no
+ *    associated port this is an NULL.
+ * @sci_phy: This is the phy object which has gone link up.
+ *
+ * This method handles the automatic port configuration for link up
+ * notifications. Is it possible to get a link down notification from a phy
+ * that has no assocoated port?
+ */
+static void sci_apc_agent_link_up(struct isci_host *ihost,
+				       struct sci_port_configuration_agent *port_agent,
+				       struct isci_port *iport,
+				       struct isci_phy *iphy)
+{
+	u8 phy_index  = iphy->phy_index;
+
+	if (!iport) {
+		/* the phy is not the part of this port */
+		port_agent->phy_ready_mask |= 1 << phy_index;
+		sci_apc_agent_configure_ports(ihost, port_agent, iphy, true);
+	} else {
+		/* the phy is already the part of the port */
+		u32 port_state = iport->sm.current_state_id;
+
+		/* if the PORT'S state is resetting then the link up is from
+		 * port hard reset in this case, we need to tell the port
+		 * that link up is recieved
+		 */
+		BUG_ON(port_state != SCI_PORT_RESETTING);
+		port_agent->phy_ready_mask |= 1 << phy_index;
+		sci_port_link_up(iport, iphy);
+	}
+}
+
+/**
+ *
+ * @controller: This is the controller object that receives the link down
+ *    notification.
+ * @iport: This is the port object associated with the phy.  If the is no
+ *    associated port this is an NULL.
+ * @iphy: This is the phy object which has gone link down.
+ *
+ * This method handles the automatic port configuration link down
+ * notifications. not associated with a port there is no action taken. Is it
+ * possible to get a link down notification from a phy that has no assocoated
+ * port?
+ */
+static void sci_apc_agent_link_down(
+	struct isci_host *ihost,
+	struct sci_port_configuration_agent *port_agent,
+	struct isci_port *iport,
+	struct isci_phy *iphy)
+{
+	port_agent->phy_ready_mask &= ~(1 << iphy->phy_index);
+
+	if (!iport)
+		return;
+	if (port_agent->phy_configured_mask & (1 << iphy->phy_index)) {
+		enum sci_status status;
+
+		status = sci_port_remove_phy(iport, iphy);
+
+		if (status == SCI_SUCCESS)
+			port_agent->phy_configured_mask &= ~(1 << iphy->phy_index);
+	}
+}
+
+/* configure the phys into ports when the timer fires */
+static void apc_agent_timeout(unsigned long data)
+{
+	u32 index;
+	struct sci_timer *tmr = (struct sci_timer *)data;
+	struct sci_port_configuration_agent *port_agent;
+	struct isci_host *ihost;
+	unsigned long flags;
+	u16 configure_phy_mask;
+
+	port_agent = container_of(tmr, typeof(*port_agent), timer);
+	ihost = container_of(port_agent, typeof(*ihost), port_agent);
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	if (tmr->cancel)
+		goto done;
+
+	port_agent->timer_pending = false;
+
+	configure_phy_mask = ~port_agent->phy_configured_mask & port_agent->phy_ready_mask;
+
+	if (!configure_phy_mask)
+		return;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		if ((configure_phy_mask & (1 << index)) == 0)
+			continue;
+
+		sci_apc_agent_configure_ports(ihost, port_agent,
+						   &ihost->phys[index], false);
+	}
+
+done:
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
+
+/*
+ * ******************************************************************************
+ * Public port configuration agent routines
+ * ****************************************************************************** */
+
+/**
+ *
+ *
+ * This method will construct the port configuration agent for operation. This
+ * call is universal for both manual port configuration and automatic port
+ * configuration modes.
+ */
+void sci_port_configuration_agent_construct(
+	struct sci_port_configuration_agent *port_agent)
+{
+	u32 index;
+
+	port_agent->phy_configured_mask = 0x00;
+	port_agent->phy_ready_mask = 0x00;
+
+	port_agent->link_up_handler = NULL;
+	port_agent->link_down_handler = NULL;
+
+	port_agent->timer_pending = false;
+
+	for (index = 0; index < SCI_MAX_PORTS; index++) {
+		port_agent->phy_valid_port_range[index].min_index = 0;
+		port_agent->phy_valid_port_range[index].max_index = 0;
+	}
+}
+
+enum sci_status sci_port_configuration_agent_initialize(
+	struct isci_host *ihost,
+	struct sci_port_configuration_agent *port_agent)
+{
+	enum sci_status status;
+	enum sci_port_configuration_mode mode;
+
+	mode = ihost->oem_parameters.controller.mode_type;
+
+	if (mode == SCIC_PORT_MANUAL_CONFIGURATION_MODE) {
+		status = sci_mpc_agent_validate_phy_configuration(
+				ihost, port_agent);
+
+		port_agent->link_up_handler = sci_mpc_agent_link_up;
+		port_agent->link_down_handler = sci_mpc_agent_link_down;
+
+		sci_init_timer(&port_agent->timer, mpc_agent_timeout);
+	} else {
+		status = sci_apc_agent_validate_phy_configuration(
+				ihost, port_agent);
+
+		port_agent->link_up_handler = sci_apc_agent_link_up;
+		port_agent->link_down_handler = sci_apc_agent_link_down;
+
+		sci_init_timer(&port_agent->timer, apc_agent_timeout);
+	}
+
+	return status;
+}
diff --git a/drivers/scsi/isci/probe_roms.c b/drivers/scsi/isci/probe_roms.c
new file mode 100644
index 0000000..b5f4341
--- /dev/null
+++ b/drivers/scsi/isci/probe_roms.c
@@ -0,0 +1,243 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ */
+
+/* probe_roms - scan for oem parameters */
+
+#include <linux/kernel.h>
+#include <linux/firmware.h>
+#include <linux/uaccess.h>
+#include <linux/efi.h>
+#include <asm/probe_roms.h>
+
+#include "isci.h"
+#include "task.h"
+#include "probe_roms.h"
+
+static efi_char16_t isci_efivar_name[] = {
+	'R', 's', 't', 'S', 'c', 'u', 'O'
+};
+
+struct isci_orom *isci_request_oprom(struct pci_dev *pdev)
+{
+	void __iomem *oprom = pci_map_biosrom(pdev);
+	struct isci_orom *rom = NULL;
+	size_t len, i;
+	int j;
+	char oem_sig[4];
+	struct isci_oem_hdr oem_hdr;
+	u8 *tmp, sum;
+
+	if (!oprom)
+		return NULL;
+
+	len = pci_biosrom_size(pdev);
+	rom = devm_kzalloc(&pdev->dev, sizeof(*rom), GFP_KERNEL);
+	if (!rom) {
+		dev_warn(&pdev->dev,
+			 "Unable to allocate memory for orom\n");
+		return NULL;
+	}
+
+	for (i = 0; i < len && rom; i += ISCI_OEM_SIG_SIZE) {
+		memcpy_fromio(oem_sig, oprom + i, ISCI_OEM_SIG_SIZE);
+
+		/* we think we found the OEM table */
+		if (memcmp(oem_sig, ISCI_OEM_SIG, ISCI_OEM_SIG_SIZE) == 0) {
+			size_t copy_len;
+
+			memcpy_fromio(&oem_hdr, oprom + i, sizeof(oem_hdr));
+
+			copy_len = min(oem_hdr.len - sizeof(oem_hdr),
+				       sizeof(*rom));
+
+			memcpy_fromio(rom,
+				      oprom + i + sizeof(oem_hdr),
+				      copy_len);
+
+			/* calculate checksum */
+			tmp = (u8 *)&oem_hdr;
+			for (j = 0, sum = 0; j < sizeof(oem_hdr); j++, tmp++)
+				sum += *tmp;
+
+			tmp = (u8 *)rom;
+			for (j = 0; j < sizeof(*rom); j++, tmp++)
+				sum += *tmp;
+
+			if (sum != 0) {
+				dev_warn(&pdev->dev,
+					 "OEM table checksum failed\n");
+				continue;
+			}
+
+			/* keep going if that's not the oem param table */
+			if (memcmp(rom->hdr.signature,
+				   ISCI_ROM_SIG,
+				   ISCI_ROM_SIG_SIZE) != 0)
+				continue;
+
+			dev_info(&pdev->dev,
+				 "OEM parameter table found in OROM\n");
+			break;
+		}
+	}
+
+	if (i >= len) {
+		dev_err(&pdev->dev, "oprom parse error\n");
+		devm_kfree(&pdev->dev, rom);
+		rom = NULL;
+	}
+	pci_unmap_biosrom(oprom);
+
+	return rom;
+}
+
+enum sci_status isci_parse_oem_parameters(struct sci_oem_params *oem,
+					  struct isci_orom *orom, int scu_index)
+{
+	/* check for valid inputs */
+	if (scu_index < 0 || scu_index >= SCI_MAX_CONTROLLERS ||
+	    scu_index > orom->hdr.num_elements || !oem)
+		return -EINVAL;
+
+	*oem = orom->ctrl[scu_index];
+	return 0;
+}
+
+struct isci_orom *isci_request_firmware(struct pci_dev *pdev, const struct firmware *fw)
+{
+	struct isci_orom *orom = NULL, *data;
+	int i, j;
+
+	if (request_firmware(&fw, ISCI_FW_NAME, &pdev->dev) != 0)
+		return NULL;
+
+	if (fw->size < sizeof(*orom))
+		goto out;
+
+	data = (struct isci_orom *)fw->data;
+
+	if (strncmp(ISCI_ROM_SIG, data->hdr.signature,
+		    strlen(ISCI_ROM_SIG)) != 0)
+		goto out;
+
+	orom = devm_kzalloc(&pdev->dev, fw->size, GFP_KERNEL);
+	if (!orom)
+		goto out;
+
+	memcpy(orom, fw->data, fw->size);
+
+	if (is_c0(pdev))
+		goto out;
+
+	/*
+	 * deprecated: override default amp_control for pre-preproduction
+	 * silicon revisions
+	 */
+	for (i = 0; i < ARRAY_SIZE(orom->ctrl); i++)
+		for (j = 0; j < ARRAY_SIZE(orom->ctrl[i].phys); j++) {
+			orom->ctrl[i].phys[j].afe_tx_amp_control0 = 0xe7c03;
+			orom->ctrl[i].phys[j].afe_tx_amp_control1 = 0xe7c03;
+			orom->ctrl[i].phys[j].afe_tx_amp_control2 = 0xe7c03;
+			orom->ctrl[i].phys[j].afe_tx_amp_control3 = 0xe7c03;
+		}
+ out:
+	release_firmware(fw);
+
+	return orom;
+}
+
+static struct efi *get_efi(void)
+{
+#ifdef CONFIG_EFI
+	return &efi;
+#else
+	return NULL;
+#endif
+}
+
+struct isci_orom *isci_get_efi_var(struct pci_dev *pdev)
+{
+	efi_status_t status;
+	struct isci_orom *rom;
+	struct isci_oem_hdr *oem_hdr;
+	u8 *tmp, sum;
+	int j;
+	unsigned long data_len;
+	u8 *efi_data;
+	u32 efi_attrib = 0;
+
+	data_len = 1024;
+	efi_data = devm_kzalloc(&pdev->dev, data_len, GFP_KERNEL);
+	if (!efi_data) {
+		dev_warn(&pdev->dev,
+			 "Unable to allocate memory for EFI data\n");
+		return NULL;
+	}
+
+	rom = (struct isci_orom *)(efi_data + sizeof(struct isci_oem_hdr));
+
+	if (get_efi())
+		status = get_efi()->get_variable(isci_efivar_name,
+						 &ISCI_EFI_VENDOR_GUID,
+						 &efi_attrib,
+						 &data_len,
+						 efi_data);
+	else
+		status = EFI_NOT_FOUND;
+
+	if (status != EFI_SUCCESS) {
+		dev_warn(&pdev->dev,
+			 "Unable to obtain EFI var data for OEM parms\n");
+		return NULL;
+	}
+
+	oem_hdr = (struct isci_oem_hdr *)efi_data;
+
+	if (memcmp(oem_hdr->sig, ISCI_OEM_SIG, ISCI_OEM_SIG_SIZE) != 0) {
+		dev_warn(&pdev->dev,
+			 "Invalid OEM header signature\n");
+		return NULL;
+	}
+
+	/* calculate checksum */
+	tmp = (u8 *)efi_data;
+	for (j = 0, sum = 0; j < (sizeof(*oem_hdr) + sizeof(*rom)); j++, tmp++)
+		sum += *tmp;
+
+	if (sum != 0) {
+		dev_warn(&pdev->dev,
+			 "OEM table checksum failed\n");
+		return NULL;
+	}
+
+	if (memcmp(rom->hdr.signature,
+		   ISCI_ROM_SIG,
+		   ISCI_ROM_SIG_SIZE) != 0) {
+		dev_warn(&pdev->dev,
+			 "Invalid OEM table signature\n");
+		return NULL;
+	}
+
+	return rom;
+}
diff --git a/drivers/scsi/isci/probe_roms.h b/drivers/scsi/isci/probe_roms.h
new file mode 100644
index 0000000..dc007e6
--- /dev/null
+++ b/drivers/scsi/isci/probe_roms.h
@@ -0,0 +1,249 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _ISCI_PROBE_ROMS_H_
+#define _ISCI_PROBE_ROMS_H_
+
+#ifdef __KERNEL__
+#include <linux/firmware.h>
+#include <linux/pci.h>
+#include <linux/efi.h>
+#include "isci.h"
+
+#define SCIC_SDS_PARM_NO_SPEED   0
+
+/* generation 1 (i.e. 1.5 Gb/s) */
+#define SCIC_SDS_PARM_GEN1_SPEED 1
+
+/* generation 2 (i.e. 3.0 Gb/s) */
+#define SCIC_SDS_PARM_GEN2_SPEED 2
+
+/* generation 3 (i.e. 6.0 Gb/s) */
+#define SCIC_SDS_PARM_GEN3_SPEED 3
+#define SCIC_SDS_PARM_MAX_SPEED SCIC_SDS_PARM_GEN3_SPEED
+
+/* parameters that can be set by module parameters */
+struct sci_user_parameters {
+	struct sci_phy_user_params {
+		/**
+		 * This field specifies the NOTIFY (ENABLE SPIN UP) primitive
+		 * insertion frequency for this phy index.
+		 */
+		u32 notify_enable_spin_up_insertion_frequency;
+
+		/**
+		 * This method specifies the number of transmitted DWORDs within which
+		 * to transmit a single ALIGN primitive.  This value applies regardless
+		 * of what type of device is attached or connection state.  A value of
+		 * 0 indicates that no ALIGN primitives will be inserted.
+		 */
+		u16 align_insertion_frequency;
+
+		/**
+		 * This method specifies the number of transmitted DWORDs within which
+		 * to transmit 2 ALIGN primitives.  This applies for SAS connections
+		 * only.  A minimum value of 3 is required for this field.
+		 */
+		u16 in_connection_align_insertion_frequency;
+
+		/**
+		 * This field indicates the maximum speed generation to be utilized
+		 * by phys in the supplied port.
+		 * - A value of 1 indicates generation 1 (i.e. 1.5 Gb/s).
+		 * - A value of 2 indicates generation 2 (i.e. 3.0 Gb/s).
+		 * - A value of 3 indicates generation 3 (i.e. 6.0 Gb/s).
+		 */
+		u8 max_speed_generation;
+
+	} phys[SCI_MAX_PHYS];
+
+	/**
+	 * This field specifies the maximum number of direct attached devices
+	 * that can have power supplied to them simultaneously.
+	 */
+	u8 max_number_concurrent_device_spin_up;
+
+	/**
+	 * This field specifies the number of seconds to allow a phy to consume
+	 * power before yielding to another phy.
+	 *
+	 */
+	u8 phy_spin_up_delay_interval;
+
+	/**
+	 * These timer values specifies how long a link will remain open with no
+	 * activity in increments of a microsecond, it can be in increments of
+	 * 100 microseconds if the upper most bit is set.
+	 *
+	 */
+	u16 stp_inactivity_timeout;
+	u16 ssp_inactivity_timeout;
+
+	/**
+	 * These timer values specifies how long a link will remain open in increments
+	 * of 100 microseconds.
+	 *
+	 */
+	u16 stp_max_occupancy_timeout;
+	u16 ssp_max_occupancy_timeout;
+
+	/**
+	 * This timer value specifies how long a link will remain open with no
+	 * outbound traffic in increments of a microsecond.
+	 *
+	 */
+	u8 no_outbound_task_timeout;
+
+};
+
+#define SCIC_SDS_PARM_PHY_MASK_MIN 0x0
+#define SCIC_SDS_PARM_PHY_MASK_MAX 0xF
+#define MAX_CONCURRENT_DEVICE_SPIN_UP_COUNT 4
+
+struct sci_oem_params;
+int sci_oem_parameters_validate(struct sci_oem_params *oem);
+
+struct isci_orom;
+struct isci_orom *isci_request_oprom(struct pci_dev *pdev);
+enum sci_status isci_parse_oem_parameters(struct sci_oem_params *oem,
+					  struct isci_orom *orom, int scu_index);
+struct isci_orom *isci_request_firmware(struct pci_dev *pdev, const struct firmware *fw);
+struct isci_orom *isci_get_efi_var(struct pci_dev *pdev);
+
+struct isci_oem_hdr {
+	u8 sig[4];
+	u8 rev_major;
+	u8 rev_minor;
+	u16 len;
+	u8 checksum;
+	u8 reserved1;
+	u16 reserved2;
+} __attribute__ ((packed));
+
+#else
+#define SCI_MAX_PORTS 4
+#define SCI_MAX_PHYS 4
+#define SCI_MAX_CONTROLLERS 2
+#endif
+
+#define ISCI_FW_NAME		"isci/isci_firmware.bin"
+
+#define ROMSIGNATURE		0xaa55
+
+#define ISCI_OEM_SIG		"$OEM"
+#define ISCI_OEM_SIG_SIZE	4
+#define ISCI_ROM_SIG		"ISCUOEMB"
+#define ISCI_ROM_SIG_SIZE	8
+
+#define ISCI_EFI_VENDOR_GUID	\
+	EFI_GUID(0x193dfefa, 0xa445, 0x4302, 0x99, 0xd8, 0xef, 0x3a, 0xad, \
+			0x1a, 0x04, 0xc6)
+#define ISCI_EFI_VAR_NAME	"RstScuO"
+
+/* Allowed PORT configuration modes APC Automatic PORT configuration mode is
+ * defined by the OEM configuration parameters providing no PHY_MASK parameters
+ * for any PORT. i.e. There are no phys assigned to any of the ports at start.
+ * MPC Manual PORT configuration mode is defined by the OEM configuration
+ * parameters providing a PHY_MASK value for any PORT.  It is assumed that any
+ * PORT with no PHY_MASK is an invalid port and not all PHYs must be assigned.
+ * A PORT_PHY mask that assigns just a single PHY to a port and no other PHYs
+ * being assigned is sufficient to declare manual PORT configuration.
+ */
+enum sci_port_configuration_mode {
+	SCIC_PORT_MANUAL_CONFIGURATION_MODE = 0,
+	SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE = 1
+};
+
+struct sci_bios_oem_param_block_hdr {
+	uint8_t signature[ISCI_ROM_SIG_SIZE];
+	uint16_t total_block_length;
+	uint8_t hdr_length;
+	uint8_t version;
+	uint8_t preboot_source;
+	uint8_t num_elements;
+	uint16_t element_length;
+	uint8_t reserved[8];
+} __attribute__ ((packed));
+
+struct sci_oem_params {
+	struct {
+		uint8_t mode_type;
+		uint8_t max_concurrent_dev_spin_up;
+		uint8_t do_enable_ssc;
+		uint8_t reserved;
+	} controller;
+
+	struct {
+		uint8_t phy_mask;
+	} ports[SCI_MAX_PORTS];
+
+	struct sci_phy_oem_params {
+		struct {
+			uint32_t high;
+			uint32_t low;
+		} sas_address;
+
+		uint32_t afe_tx_amp_control0;
+		uint32_t afe_tx_amp_control1;
+		uint32_t afe_tx_amp_control2;
+		uint32_t afe_tx_amp_control3;
+	} phys[SCI_MAX_PHYS];
+} __attribute__ ((packed));
+
+struct isci_orom {
+	struct sci_bios_oem_param_block_hdr hdr;
+	struct sci_oem_params ctrl[SCI_MAX_CONTROLLERS];
+} __attribute__ ((packed));
+
+#endif
diff --git a/drivers/scsi/isci/registers.h b/drivers/scsi/isci/registers.h
new file mode 100644
index 0000000..9b266c7
--- /dev/null
+++ b/drivers/scsi/isci/registers.h
@@ -0,0 +1,1934 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _SCU_REGISTERS_H_
+#define _SCU_REGISTERS_H_
+
+/**
+ * This file contains the constants and structures for the SCU memory mapped
+ *    registers.
+ *
+ *
+ */
+
+#define SCU_VIIT_ENTRY_ID_MASK         (0xC0000000)
+#define SCU_VIIT_ENTRY_ID_SHIFT        (30)
+
+#define SCU_VIIT_ENTRY_FUNCTION_MASK   (0x0FF00000)
+#define SCU_VIIT_ENTRY_FUNCTION_SHIFT  (20)
+
+#define SCU_VIIT_ENTRY_IPPTMODE_MASK   (0x0001F800)
+#define SCU_VIIT_ENTRY_IPPTMODE_SHIFT  (12)
+
+#define SCU_VIIT_ENTRY_LPVIE_MASK      (0x00000F00)
+#define SCU_VIIT_ENTRY_LPVIE_SHIFT     (8)
+
+#define SCU_VIIT_ENTRY_STATUS_MASK     (0x000000FF)
+#define SCU_VIIT_ENTRY_STATUS_SHIFT    (0)
+
+#define SCU_VIIT_ENTRY_ID_INVALID   (0 << SCU_VIIT_ENTRY_ID_SHIFT)
+#define SCU_VIIT_ENTRY_ID_VIIT      (1 << SCU_VIIT_ENTRY_ID_SHIFT)
+#define SCU_VIIT_ENTRY_ID_IIT       (2 << SCU_VIIT_ENTRY_ID_SHIFT)
+#define SCU_VIIT_ENTRY_ID_VIRT_EXP  (3 << SCU_VIIT_ENTRY_ID_SHIFT)
+
+#define SCU_VIIT_IPPT_SSP_INITIATOR (0x01 << SCU_VIIT_ENTRY_IPPTMODE_SHIFT)
+#define SCU_VIIT_IPPT_SMP_INITIATOR (0x02 << SCU_VIIT_ENTRY_IPPTMODE_SHIFT)
+#define SCU_VIIT_IPPT_STP_INITIATOR (0x04 << SCU_VIIT_ENTRY_IPPTMODE_SHIFT)
+#define SCU_VIIT_IPPT_INITIATOR	    \
+	(\
+		SCU_VIIT_IPPT_SSP_INITIATOR  \
+		| SCU_VIIT_IPPT_SMP_INITIATOR  \
+		| SCU_VIIT_IPPT_STP_INITIATOR  \
+	)
+
+#define SCU_VIIT_STATUS_RNC_VALID      (0x01 << SCU_VIIT_ENTRY_STATUS_SHIFT)
+#define SCU_VIIT_STATUS_ADDRESS_VALID  (0x02 << SCU_VIIT_ENTRY_STATUS_SHIFT)
+#define SCU_VIIT_STATUS_RNI_VALID      (0x04 << SCU_VIIT_ENTRY_STATUS_SHIFT)
+#define SCU_VIIT_STATUS_ALL_VALID      \
+	(\
+		SCU_VIIT_STATUS_RNC_VALID	\
+		| SCU_VIIT_STATUS_ADDRESS_VALID	  \
+		| SCU_VIIT_STATUS_RNI_VALID	  \
+	)
+
+#define SCU_VIIT_IPPT_SMP_TARGET    (0x10 << SCU_VIIT_ENTRY_IPPTMODE_SHIFT)
+
+/**
+ * struct scu_viit_entry - This is the SCU Virtual Initiator Table Entry
+ *
+ *
+ */
+struct scu_viit_entry {
+	/**
+	 * This must be encoded as to the type of initiator that is being constructed
+	 * for this port.
+	 */
+	u32 status;
+
+	/**
+	 * Virtual initiator high SAS Address
+	 */
+	u32 initiator_sas_address_hi;
+
+	/**
+	 * Virtual initiator low SAS Address
+	 */
+	u32 initiator_sas_address_lo;
+
+	/**
+	 * This must be 0
+	 */
+	u32 reserved;
+
+};
+
+
+/* IIT Status Defines */
+#define SCU_IIT_ENTRY_ID_MASK                (0xC0000000)
+#define SCU_IIT_ENTRY_ID_SHIFT               (30)
+
+#define SCU_IIT_ENTRY_STATUS_UPDATE_MASK     (0x20000000)
+#define SCU_IIT_ENTRY_STATUS_UPDATE_SHIFT    (29)
+
+#define SCU_IIT_ENTRY_LPI_MASK               (0x00000F00)
+#define SCU_IIT_ENTRY_LPI_SHIFT              (8)
+
+#define SCU_IIT_ENTRY_STATUS_MASK            (0x000000FF)
+#define SCU_IIT_ENTRY_STATUS_SHIFT           (0)
+
+/* IIT Remote Initiator Defines */
+#define SCU_IIT_ENTRY_REMOTE_TAG_MASK  (0x0000FFFF)
+#define SCU_IIT_ENTRY_REMOTE_TAG_SHIFT (0)
+
+#define SCU_IIT_ENTRY_REMOTE_RNC_MASK  (0x0FFF0000)
+#define SCU_IIT_ENTRY_REMOTE_RNC_SHIFT (16)
+
+#define SCU_IIT_ENTRY_ID_INVALID   (0 << SCU_IIT_ENTRY_ID_SHIFT)
+#define SCU_IIT_ENTRY_ID_VIIT      (1 << SCU_IIT_ENTRY_ID_SHIFT)
+#define SCU_IIT_ENTRY_ID_IIT       (2 << SCU_IIT_ENTRY_ID_SHIFT)
+#define SCU_IIT_ENTRY_ID_VIRT_EXP  (3 << SCU_IIT_ENTRY_ID_SHIFT)
+
+/**
+ * struct scu_iit_entry - This will be implemented later when we support
+ *    virtual functions
+ *
+ *
+ */
+struct scu_iit_entry {
+	u32 status;
+	u32 remote_initiator_sas_address_hi;
+	u32 remote_initiator_sas_address_lo;
+	u32 remote_initiator;
+
+};
+
+/* Generate a value for an SCU register */
+#define SCU_GEN_VALUE(name, value) \
+	(((value) << name ## _SHIFT) & (name ## _MASK))
+
+/*
+ * Generate a bit value for an SCU register
+ * Make sure that the register MASK is just a single bit */
+#define SCU_GEN_BIT(name) \
+	SCU_GEN_VALUE(name, ((u32)1))
+
+#define SCU_SET_BIT(name, reg_value) \
+	((reg_value) | SCU_GEN_BIT(name))
+
+#define SCU_CLEAR_BIT(name, reg_value) \
+	((reg_value)$ ~(SCU_GEN_BIT(name)))
+
+/*
+ * *****************************************************************************
+ * Unions for bitfield definitions of SCU Registers
+ * SMU Post Context Port
+ * ***************************************************************************** */
+#define SMU_POST_CONTEXT_PORT_CONTEXT_INDEX_SHIFT         (0)
+#define SMU_POST_CONTEXT_PORT_CONTEXT_INDEX_MASK          (0x00000FFF)
+#define SMU_POST_CONTEXT_PORT_LOGICAL_PORT_INDEX_SHIFT    (12)
+#define SMU_POST_CONTEXT_PORT_LOGICAL_PORT_INDEX_MASK     (0x0000F000)
+#define SMU_POST_CONTEXT_PORT_PROTOCOL_ENGINE_SHIFT       (16)
+#define SMU_POST_CONTEXT_PORT_PROTOCOL_ENGINE_MASK        (0x00030000)
+#define SMU_POST_CONTEXT_PORT_COMMAND_CONTEXT_SHIFT       (18)
+#define SMU_POST_CONTEXT_PORT_COMMAND_CONTEXT_MASK        (0x00FC0000)
+#define SMU_POST_CONTEXT_PORT_RESERVED_MASK               (0xFF000000)
+
+#define SMU_PCP_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SMU_POST_CONTEXT_PORT_ ## name, value)
+
+/* ***************************************************************************** */
+#define SMU_INTERRUPT_STATUS_COMPLETION_SHIFT       (31)
+#define SMU_INTERRUPT_STATUS_COMPLETION_MASK        (0x80000000)
+#define SMU_INTERRUPT_STATUS_QUEUE_SUSPEND_SHIFT    (1)
+#define SMU_INTERRUPT_STATUS_QUEUE_SUSPEND_MASK     (0x00000002)
+#define SMU_INTERRUPT_STATUS_QUEUE_ERROR_SHIFT      (0)
+#define SMU_INTERRUPT_STATUS_QUEUE_ERROR_MASK       (0x00000001)
+#define SMU_INTERRUPT_STATUS_RESERVED_MASK          (0x7FFFFFFC)
+
+#define SMU_ISR_GEN_BIT(name) \
+	SCU_GEN_BIT(SMU_INTERRUPT_STATUS_ ## name)
+
+#define SMU_ISR_QUEUE_ERROR   SMU_ISR_GEN_BIT(QUEUE_ERROR)
+#define SMU_ISR_QUEUE_SUSPEND SMU_ISR_GEN_BIT(QUEUE_SUSPEND)
+#define SMU_ISR_COMPLETION    SMU_ISR_GEN_BIT(COMPLETION)
+
+/* ***************************************************************************** */
+#define SMU_INTERRUPT_MASK_COMPLETION_SHIFT         (31)
+#define SMU_INTERRUPT_MASK_COMPLETION_MASK          (0x80000000)
+#define SMU_INTERRUPT_MASK_QUEUE_SUSPEND_SHIFT      (1)
+#define SMU_INTERRUPT_MASK_QUEUE_SUSPEND_MASK       (0x00000002)
+#define SMU_INTERRUPT_MASK_QUEUE_ERROR_SHIFT        (0)
+#define SMU_INTERRUPT_MASK_QUEUE_ERROR_MASK         (0x00000001)
+#define SMU_INTERRUPT_MASK_RESERVED_MASK            (0x7FFFFFFC)
+
+#define SMU_IMR_GEN_BIT(name) \
+	SCU_GEN_BIT(SMU_INTERRUPT_MASK_ ## name)
+
+#define SMU_IMR_QUEUE_ERROR   SMU_IMR_GEN_BIT(QUEUE_ERROR)
+#define SMU_IMR_QUEUE_SUSPEND SMU_IMR_GEN_BIT(QUEUE_SUSPEND)
+#define SMU_IMR_COMPLETION    SMU_IMR_GEN_BIT(COMPLETION)
+
+/* ***************************************************************************** */
+#define SMU_INTERRUPT_COALESCING_CONTROL_TIMER_SHIFT    (0)
+#define SMU_INTERRUPT_COALESCING_CONTROL_TIMER_MASK     (0x0000001F)
+#define SMU_INTERRUPT_COALESCING_CONTROL_NUMBER_SHIFT   (8)
+#define SMU_INTERRUPT_COALESCING_CONTROL_NUMBER_MASK    (0x0000FF00)
+#define SMU_INTERRUPT_COALESCING_CONTROL_RESERVED_MASK  (0xFFFF00E0)
+
+#define SMU_ICC_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SMU_INTERRUPT_COALESCING_CONTROL_ ## name, value)
+
+/* ***************************************************************************** */
+#define SMU_TASK_CONTEXT_RANGE_START_SHIFT      (0)
+#define SMU_TASK_CONTEXT_RANGE_START_MASK       (0x00000FFF)
+#define SMU_TASK_CONTEXT_RANGE_ENDING_SHIFT     (16)
+#define SMU_TASK_CONTEXT_RANGE_ENDING_MASK      (0x0FFF0000)
+#define SMU_TASK_CONTEXT_RANGE_ENABLE_SHIFT     (31)
+#define SMU_TASK_CONTEXT_RANGE_ENABLE_MASK      (0x80000000)
+#define SMU_TASK_CONTEXT_RANGE_RESERVED_MASK    (0x7000F000)
+
+#define SMU_TCR_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SMU_TASK_CONTEXT_RANGE_ ## name, value)
+
+#define SMU_TCR_GEN_BIT(name, value) \
+	SCU_GEN_BIT(SMU_TASK_CONTEXT_RANGE_ ## name)
+
+/* ***************************************************************************** */
+
+#define SMU_COMPLETION_QUEUE_PUT_POINTER_SHIFT          (0)
+#define SMU_COMPLETION_QUEUE_PUT_POINTER_MASK           (0x00003FFF)
+#define SMU_COMPLETION_QUEUE_PUT_CYCLE_BIT_SHIFT        (15)
+#define SMU_COMPLETION_QUEUE_PUT_CYCLE_BIT_MASK         (0x00008000)
+#define SMU_COMPLETION_QUEUE_PUT_EVENT_POINTER_SHIFT    (16)
+#define SMU_COMPLETION_QUEUE_PUT_EVENT_POINTER_MASK     (0x03FF0000)
+#define SMU_COMPLETION_QUEUE_PUT_EVENT_CYCLE_BIT_SHIFT  (26)
+#define SMU_COMPLETION_QUEUE_PUT_EVENT_CYCLE_BIT_MASK   (0x04000000)
+#define SMU_COMPLETION_QUEUE_PUT_RESERVED_MASK          (0xF8004000)
+
+#define SMU_CQPR_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SMU_COMPLETION_QUEUE_PUT_ ## name, value)
+
+#define SMU_CQPR_GEN_BIT(name) \
+	SCU_GEN_BIT(SMU_COMPLETION_QUEUE_PUT_ ## name)
+
+/* ***************************************************************************** */
+
+#define SMU_COMPLETION_QUEUE_GET_POINTER_SHIFT          (0)
+#define SMU_COMPLETION_QUEUE_GET_POINTER_MASK           (0x00003FFF)
+#define SMU_COMPLETION_QUEUE_GET_CYCLE_BIT_SHIFT        (15)
+#define SMU_COMPLETION_QUEUE_GET_CYCLE_BIT_MASK         (0x00008000)
+#define SMU_COMPLETION_QUEUE_GET_EVENT_POINTER_SHIFT    (16)
+#define SMU_COMPLETION_QUEUE_GET_EVENT_POINTER_MASK     (0x03FF0000)
+#define SMU_COMPLETION_QUEUE_GET_EVENT_CYCLE_BIT_SHIFT  (26)
+#define SMU_COMPLETION_QUEUE_GET_EVENT_CYCLE_BIT_MASK   (0x04000000)
+#define SMU_COMPLETION_QUEUE_GET_ENABLE_SHIFT           (30)
+#define SMU_COMPLETION_QUEUE_GET_ENABLE_MASK            (0x40000000)
+#define SMU_COMPLETION_QUEUE_GET_EVENT_ENABLE_SHIFT     (31)
+#define SMU_COMPLETION_QUEUE_GET_EVENT_ENABLE_MASK      (0x80000000)
+#define SMU_COMPLETION_QUEUE_GET_RESERVED_MASK          (0x38004000)
+
+#define SMU_CQGR_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SMU_COMPLETION_QUEUE_GET_ ## name, value)
+
+#define SMU_CQGR_GEN_BIT(name) \
+	SCU_GEN_BIT(SMU_COMPLETION_QUEUE_GET_ ## name)
+
+#define SMU_CQGR_CYCLE_BIT \
+	SMU_CQGR_GEN_BIT(CYCLE_BIT)
+
+#define SMU_CQGR_EVENT_CYCLE_BIT \
+	SMU_CQGR_GEN_BIT(EVENT_CYCLE_BIT)
+
+#define SMU_CQGR_GET_POINTER_SET(value)	\
+	SMU_CQGR_GEN_VAL(POINTER, value)
+
+
+/* ***************************************************************************** */
+#define SMU_COMPLETION_QUEUE_CONTROL_QUEUE_LIMIT_SHIFT  (0)
+#define SMU_COMPLETION_QUEUE_CONTROL_QUEUE_LIMIT_MASK   (0x00003FFF)
+#define SMU_COMPLETION_QUEUE_CONTROL_EVENT_LIMIT_SHIFT  (16)
+#define SMU_COMPLETION_QUEUE_CONTROL_EVENT_LIMIT_MASK   (0x03FF0000)
+#define SMU_COMPLETION_QUEUE_CONTROL_RESERVED_MASK      (0xFC00C000)
+
+#define SMU_CQC_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SMU_COMPLETION_QUEUE_CONTROL_ ## name, value)
+
+#define SMU_CQC_QUEUE_LIMIT_SET(value) \
+	SMU_CQC_GEN_VAL(QUEUE_LIMIT, value)
+
+#define SMU_CQC_EVENT_LIMIT_SET(value) \
+	SMU_CQC_GEN_VAL(EVENT_LIMIT, value)
+
+
+/* ***************************************************************************** */
+#define SMU_DEVICE_CONTEXT_CAPACITY_MAX_TC_SHIFT    (0)
+#define SMU_DEVICE_CONTEXT_CAPACITY_MAX_TC_MASK     (0x00000FFF)
+#define SMU_DEVICE_CONTEXT_CAPACITY_MAX_LP_SHIFT    (12)
+#define SMU_DEVICE_CONTEXT_CAPACITY_MAX_LP_MASK     (0x00007000)
+#define SMU_DEVICE_CONTEXT_CAPACITY_MAX_RNC_SHIFT   (15)
+#define SMU_DEVICE_CONTEXT_CAPACITY_MAX_RNC_MASK    (0x07FF8000)
+#define SMU_DEVICE_CONTEXT_CAPACITY_MAX_PEG_SHIFT   (27)
+#define SMU_DEVICE_CONTEXT_CAPACITY_MAX_PEG_MASK    (0x08000000)
+#define SMU_DEVICE_CONTEXT_CAPACITY_RESERVED_MASK   (0xF0000000)
+
+#define SMU_DCC_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SMU_DEVICE_CONTEXT_CAPACITY_ ## name, value)
+
+#define SMU_DCC_GET_MAX_PEG(value) \
+	(\
+		((value) & SMU_DEVICE_CONTEXT_CAPACITY_MAX_PEG_MASK) \
+		>> SMU_DEVICE_CONTEXT_CAPACITY_MAX_LP_SHIFT \
+	)
+
+#define SMU_DCC_GET_MAX_LP(value) \
+	(\
+		((value) & SMU_DEVICE_CONTEXT_CAPACITY_MAX_LP_MASK) \
+		>> SMU_DEVICE_CONTEXT_CAPACITY_MAX_LP_SHIFT \
+	)
+
+#define SMU_DCC_GET_MAX_TC(value) \
+	(\
+		((value) & SMU_DEVICE_CONTEXT_CAPACITY_MAX_TC_MASK) \
+		>> SMU_DEVICE_CONTEXT_CAPACITY_MAX_TC_SHIFT \
+	)
+
+#define SMU_DCC_GET_MAX_RNC(value) \
+	(\
+		((value) & SMU_DEVICE_CONTEXT_CAPACITY_MAX_RNC_MASK) \
+		>> SMU_DEVICE_CONTEXT_CAPACITY_MAX_RNC_SHIFT \
+	)
+
+/* -------------------------------------------------------------------------- */
+
+#define SMU_CONTROL_STATUS_TASK_CONTEXT_RANGE_ENABLE_SHIFT      (0)
+#define SMU_CONTROL_STATUS_TASK_CONTEXT_RANGE_ENABLE_MASK       (0x00000001)
+#define SMU_CONTROL_STATUS_COMPLETION_BYTE_SWAP_ENABLE_SHIFT    (1)
+#define SMU_CONTROL_STATUS_COMPLETION_BYTE_SWAP_ENABLE_MASK     (0x00000002)
+#define SMU_CONTROL_STATUS_CONTEXT_RAM_INIT_COMPLETED_SHIFT     (16)
+#define SMU_CONTROL_STATUS_CONTEXT_RAM_INIT_COMPLETED_MASK      (0x00010000)
+#define SMU_CONTROL_STATUS_SCHEDULER_RAM_INIT_COMPLETED_SHIFT   (17)
+#define SMU_CONTROL_STATUS_SCHEDULER_RAM_INIT_COMPLETED_MASK    (0x00020000)
+#define SMU_CONTROL_STATUS_RESERVED_MASK                        (0xFFFCFFFC)
+
+#define SMU_SMUCSR_GEN_BIT(name) \
+	SCU_GEN_BIT(SMU_CONTROL_STATUS_ ## name)
+
+#define SMU_SMUCSR_SCHEDULER_RAM_INIT_COMPLETED	\
+	(SMU_SMUCSR_GEN_BIT(SCHEDULER_RAM_INIT_COMPLETED))
+
+#define SMU_SMUCSR_CONTEXT_RAM_INIT_COMPLETED	\
+	(SMU_SMUCSR_GEN_BIT(CONTEXT_RAM_INIT_COMPLETED))
+
+#define SCU_RAM_INIT_COMPLETED \
+	(\
+		SMU_SMUCSR_CONTEXT_RAM_INIT_COMPLETED \
+		| SMU_SMUCSR_SCHEDULER_RAM_INIT_COMPLETED \
+	)
+
+/* -------------------------------------------------------------------------- */
+
+#define SMU_SOFTRESET_CONTROL_RESET_PEG0_PE0_SHIFT  (0)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG0_PE0_MASK   (0x00000001)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG0_PE1_SHIFT  (1)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG0_PE1_MASK   (0x00000002)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG0_PE2_SHIFT  (2)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG0_PE2_MASK   (0x00000004)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG0_PE3_SHIFT  (3)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG0_PE3_MASK   (0x00000008)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG1_PE0_SHIFT  (8)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG1_PE0_MASK   (0x00000100)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG1_PE1_SHIFT  (9)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG1_PE1_MASK   (0x00000200)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG1_PE2_SHIFT  (10)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG1_PE2_MASK   (0x00000400)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG1_PE3_SHIFT  (11)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG1_PE3_MASK   (0x00000800)
+
+#define SMU_RESET_PROTOCOL_ENGINE(peg, pe) \
+	((1 << (pe)) << ((peg) * 8))
+
+#define SMU_RESET_PEG_PROTOCOL_ENGINES(peg) \
+	(\
+		SMU_RESET_PROTOCOL_ENGINE(peg, 0) \
+		| SMU_RESET_PROTOCOL_ENGINE(peg, 1) \
+		| SMU_RESET_PROTOCOL_ENGINE(peg, 2) \
+		| SMU_RESET_PROTOCOL_ENGINE(peg, 3) \
+	)
+
+#define SMU_RESET_ALL_PROTOCOL_ENGINES() \
+	(\
+		SMU_RESET_PEG_PROTOCOL_ENGINES(0) \
+		| SMU_RESET_PEG_PROTOCOL_ENGINES(1) \
+	)
+
+#define SMU_SOFTRESET_CONTROL_RESET_WIDE_PORT_PEG0_LP0_SHIFT  (16)
+#define SMU_SOFTRESET_CONTROL_RESET_WIDE_PORT_PEG0_LP0_MASK   (0x00010000)
+#define SMU_SOFTRESET_CONTROL_RESET_WIDE_PORT_PEG0_LP2_SHIFT  (17)
+#define SMU_SOFTRESET_CONTROL_RESET_WIDE_PORT_PEG0_LP2_MASK   (0x00020000)
+#define SMU_SOFTRESET_CONTROL_RESET_WIDE_PORT_PEG1_LP0_SHIFT  (18)
+#define SMU_SOFTRESET_CONTROL_RESET_WIDE_PORT_PEG1_LP0_MASK   (0x00040000)
+#define SMU_SOFTRESET_CONTROL_RESET_WIDE_PORT_PEG1_LP2_SHIFT  (19)
+#define SMU_SOFTRESET_CONTROL_RESET_WIDE_PORT_PEG1_LP2_MASK   (0x00080000)
+
+#define SMU_RESET_WIDE_PORT_QUEUE(peg, wide_port) \
+	((1 << ((wide_port) / 2)) << ((peg) * 2) << 16)
+
+#define SMU_SOFTRESET_CONTROL_RESET_PEG0_SHIFT      (20)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG0_MASK       (0x00100000)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG1_SHIFT      (21)
+#define SMU_SOFTRESET_CONTROL_RESET_PEG1_MASK       (0x00200000)
+#define SMU_SOFTRESET_CONTROL_RESET_SCU_SHIFT       (22)
+#define SMU_SOFTRESET_CONTROL_RESET_SCU_MASK        (0x00400000)
+
+/*
+ * It seems to make sense that if you are going to reset the protocol
+ * engine group that you would also reset all of the protocol engines */
+#define SMU_RESET_PROTOCOL_ENGINE_GROUP(peg) \
+	(\
+		(1 << ((peg) + 20)) \
+		| SMU_RESET_WIDE_PORT_QUEUE(peg, 0) \
+		| SMU_RESET_WIDE_PORT_QUEUE(peg, 1) \
+		| SMU_RESET_PEG_PROTOCOL_ENGINES(peg) \
+	)
+
+#define SMU_RESET_ALL_PROTOCOL_ENGINE_GROUPS() \
+	(\
+		SMU_RESET_PROTOCOL_ENGINE_GROUP(0) \
+		| SMU_RESET_PROTOCOL_ENGINE_GROUP(1) \
+	)
+
+#define SMU_RESET_SCU()  (0xFFFFFFFF)
+
+
+
+/* ***************************************************************************** */
+#define SMU_TASK_CONTEXT_ASSIGNMENT_STARTING_SHIFT              (0)
+#define SMU_TASK_CONTEXT_ASSIGNMENT_STARTING_MASK               (0x00000FFF)
+#define SMU_TASK_CONTEXT_ASSIGNMENT_ENDING_SHIFT                (16)
+#define SMU_TASK_CONTEXT_ASSIGNMENT_ENDING_MASK                 (0x0FFF0000)
+#define SMU_TASK_CONTEXT_ASSIGNMENT_RANGE_CHECK_ENABLE_SHIFT    (31)
+#define SMU_TASK_CONTEXT_ASSIGNMENT_RANGE_CHECK_ENABLE_MASK     (0x80000000)
+#define SMU_TASK_CONTEXT_ASSIGNMENT_RESERVED_MASK               (0x7000F000)
+
+#define SMU_TCA_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SMU_TASK_CONTEXT_ASSIGNMENT_ ## name, value)
+
+#define SMU_TCA_GEN_BIT(name) \
+	SCU_GEN_BIT(SMU_TASK_CONTEXT_ASSIGNMENT_ ## name)
+
+/* ***************************************************************************** */
+#define SCU_SDMA_UNSOLICITED_FRAME_QUEUE_CONTROL_QUEUE_SIZE_SHIFT   (0)
+#define SCU_SDMA_UNSOLICITED_FRAME_QUEUE_CONTROL_QUEUE_SIZE_MASK    (0x00000FFF)
+#define SCU_SDMA_UNSOLICITED_FRAME_QUEUE_CONTROL_RESERVED_MASK      (0xFFFFF000)
+
+#define SCU_UFQC_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SCU_SDMA_UNSOLICITED_FRAME_QUEUE_CONTROL_ ## name, value)
+
+#define SCU_UFQC_QUEUE_SIZE_SET(value) \
+	SCU_UFQC_GEN_VAL(QUEUE_SIZE, value)
+
+/* ***************************************************************************** */
+#define SCU_SDMA_UNSOLICITED_FRAME_QUEUE_PUT_POINTER_SHIFT      (0)
+#define SCU_SDMA_UNSOLICITED_FRAME_QUEUE_PUT_POINTER_MASK       (0x00000FFF)
+#define SCU_SDMA_UNSOLICITED_FRAME_QUEUE_PUT_CYCLE_BIT_SHIFT    (12)
+#define SCU_SDMA_UNSOLICITED_FRAME_QUEUE_PUT_CYCLE_BIT_MASK     (0x00001000)
+#define SCU_SDMA_UNSOLICITED_FRAME_QUEUE_PUT_RESERVED_MASK      (0xFFFFE000)
+
+#define SCU_UFQPP_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SCU_SDMA_UNSOLICITED_FRAME_QUEUE_PUT_ ## name, value)
+
+#define SCU_UFQPP_GEN_BIT(name)	\
+	SCU_GEN_BIT(SCU_SDMA_UNSOLICITED_FRAME_QUEUE_PUT_ ## name)
+
+/*
+ * *****************************************************************************
+ * * SDMA Registers
+ * ***************************************************************************** */
+#define SCU_SDMA_UNSOLICITED_FRAME_QUEUE_GET_POINTER_SHIFT      (0)
+#define SCU_SDMA_UNSOLICITED_FRAME_QUEUE_GET_POINTER_MASK       (0x00000FFF)
+#define SCU_SDMA_UNSOLICITED_FRAME_QUEUE_GET_CYCLE_BIT_SHIFT    (12)
+#define SCU_SDMA_UNSOLICITED_FRAME_QUEUE_GET_CYCLE_BIT_MASK     (12)
+#define SCU_SDMA_UNSOLICITED_FRAME_QUEUE_GET_ENABLE_BIT_SHIFT   (31)
+#define SCU_SDMA_UNSOLICITED_FRAME_QUEUE_GET_ENABLE_BIT_MASK    (0x80000000)
+#define SCU_SDMA_UNSOLICITED_FRAME_QUEUE_GET_RESERVED_MASK      (0x7FFFE000)
+
+#define SCU_UFQGP_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SCU_SDMA_UNSOLICITED_FRAME_QUEUE_GET_ ## name, value)
+
+#define SCU_UFQGP_GEN_BIT(name)	\
+	SCU_GEN_BIT(SCU_SDMA_UNSOLICITED_FRAME_QUEUE_GET_ ## name)
+
+#define SCU_UFQGP_CYCLE_BIT(value) \
+	SCU_UFQGP_GEN_BIT(CYCLE_BIT, value)
+
+#define SCU_UFQGP_GET_POINTER(value) \
+	SCU_UFQGP_GEN_VALUE(POINTER, value)
+
+#define SCU_UFQGP_ENABLE(value)	\
+	(SCU_UFQGP_GEN_BIT(ENABLE) | value)
+
+#define SCU_UFQGP_DISABLE(value) \
+	(~SCU_UFQGP_GEN_BIT(ENABLE) & value)
+
+#define SCU_UFQGP_VALUE(bit, value) \
+	(SCU_UFQGP_CYCLE_BIT(bit) | SCU_UFQGP_GET_POINTER(value))
+
+/* ***************************************************************************** */
+#define SCU_PDMA_CONFIGURATION_ADDRESS_MODIFIER_SHIFT                               (0)
+#define SCU_PDMA_CONFIGURATION_ADDRESS_MODIFIER_MASK                                (0x0000FFFF)
+#define SCU_PDMA_CONFIGURATION_PCI_RELAXED_ORDERING_ENABLE_SHIFT                    (16)
+#define SCU_PDMA_CONFIGURATION_PCI_RELAXED_ORDERING_ENABLE_MASK                     (0x00010000)
+#define SCU_PDMA_CONFIGURATION_PCI_NO_SNOOP_ENABLE_SHIFT                            (17)
+#define SCU_PDMA_CONFIGURATION_PCI_NO_SNOOP_ENABLE_MASK                             (0x00020000)
+#define SCU_PDMA_CONFIGURATION_BIG_ENDIAN_CONTROL_BYTE_SWAP_SHIFT                   (18)
+#define SCU_PDMA_CONFIGURATION_BIG_ENDIAN_CONTROL_BYTE_SWAP_MASK                    (0x00040000)
+#define SCU_PDMA_CONFIGURATION_BIG_ENDIAN_CONTROL_XPI_SGL_FETCH_SHIFT               (19)
+#define SCU_PDMA_CONFIGURATION_BIG_ENDIAN_CONTROL_XPI_SGL_FETCH_MASK                (0x00080000)
+#define SCU_PDMA_CONFIGURATION_BIG_ENDIAN_CONTROL_XPI_RX_HEADER_RAM_WRITE_SHIFT     (20)
+#define SCU_PDMA_CONFIGURATION_BIG_ENDIAN_CONTROL_XPI_RX_HEADER_RAM_WRITE_MASK      (0x00100000)
+#define SCU_PDMA_CONFIGURATION_BIG_ENDIAN_CONTROL_XPI_UF_ADDRESS_FETCH_SHIFT        (21)
+#define SCU_PDMA_CONFIGURATION_BIG_ENDIAN_CONTROL_XPI_UF_ADDRESS_FETCH_MASK         (0x00200000)
+#define SCU_PDMA_CONFIGURATION_ADDRESS_MODIFIER_SELECT_SHIFT                        (22)
+#define SCU_PDMA_CONFIGURATION_ADDRESS_MODIFIER_SELECT_MASK                         (0x00400000)
+#define SCU_PDMA_CONFIGURATION_RESERVED_MASK                                        (0xFF800000)
+
+#define SCU_PDMACR_GEN_VALUE(name, value) \
+	SCU_GEN_VALUE(SCU_PDMA_CONFIGURATION_ ## name, value)
+
+#define SCU_PDMACR_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_PDMA_CONFIGURATION_ ## name)
+
+#define SCU_PDMACR_BE_GEN_BIT(name) \
+	SCU_PCMACR_GEN_BIT(BIG_ENDIAN_CONTROL_ ## name)
+
+/* ***************************************************************************** */
+#define SCU_CDMA_CONFIGURATION_PCI_RELAXED_ORDERING_ENABLE_SHIFT                    (8)
+#define SCU_CDMA_CONFIGURATION_PCI_RELAXED_ORDERING_ENABLE_MASK                     (0x00000100)
+
+#define SCU_CDMACR_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_CDMA_CONFIGURATION_ ## name)
+
+/*
+ * *****************************************************************************
+ * * SCU Link Layer Registers
+ * ***************************************************************************** */
+#define SCU_LINK_LAYER_SPEED_NEGOTIATION_TIMER_VALUES_TIMEOUT_SHIFT             (0)
+#define SCU_LINK_LAYER_SPEED_NEGOTIATION_TIMER_VALUES_TIMEOUT_MASK              (0x000000FF)
+#define SCU_LINK_LAYER_SPEED_NEGOTIATION_TIMER_VALUES_LOCK_TIME_SHIFT           (8)
+#define SCU_LINK_LAYER_SPEED_NEGOTIATION_TIMER_VALUES_LOCK_TIME_MASK            (0x0000FF00)
+#define SCU_LINK_LAYER_SPEED_NEGOTIATION_TIMER_VALUES_RATE_CHANGE_DELAY_SHIFT   (16)
+#define SCU_LINK_LAYER_SPEED_NEGOTIATION_TIMER_VALUES_RATE_CHANGE_DELAY_MASK    (0x00FF0000)
+#define SCU_LINK_LAYER_SPEED_NEGOTIATION_TIMER_VALUES_DWORD_SYNC_TIMEOUT_SHIFT  (24)
+#define SCU_LINK_LAYER_SPEED_NEGOTIATION_TIMER_VALUES_DWORD_SYNC_TIMEOUT_MASK   (0xFF000000)
+#define SCU_LINK_LAYER_SPEED_NECGOIATION_TIMER_VALUES_REQUIRED_MASK             (0x00000000)
+#define SCU_LINK_LAYER_SPEED_NECGOIATION_TIMER_VALUES_DEFAULT_MASK              (0x7D00676F)
+#define SCU_LINK_LAYER_SPEED_NECGOIATION_TIMER_VALUES_RESERVED_MASK             (0x00FF0000)
+
+#define SCU_SAS_SPDTOV_GEN_VALUE(name, value) \
+	SCU_GEN_VALUE(SCU_LINK_LAYER_SPEED_NEGOTIATION_TIMER_VALUES_ ## name, value)
+
+
+#define SCU_LINK_STATUS_DWORD_SYNC_AQUIRED_SHIFT            (2)
+#define SCU_LINK_STATUS_DWORD_SYNC_AQUIRED_MASK             (0x00000004)
+#define SCU_LINK_STATUS_TRANSMIT_PORT_SELECTION_DONE_SHIFT  (4)
+#define SCU_LINK_STATUS_TRANSMIT_PORT_SELECTION_DONE_MASK   (0x00000010)
+#define SCU_LINK_STATUS_RECEIVER_CREDIT_EXHAUSTED_SHIFT     (5)
+#define SCU_LINK_STATUS_RECEIVER_CREDIT_EXHAUSTED_MASK      (0x00000020)
+#define SCU_LINK_STATUS_RESERVED_MASK                       (0xFFFFFFCD)
+
+#define SCU_SAS_LLSTA_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_LINK_STATUS_ ## name)
+
+
+/* TODO: Where is the SATA_PSELTOV register? */
+
+/*
+ * *****************************************************************************
+ * * SCU SAS Maximum Arbitration Wait Time Timeout Register
+ * ***************************************************************************** */
+#define SCU_SAS_MAX_ARBITRATION_WAIT_TIME_TIMEOUT_VALUE_SHIFT       (0)
+#define SCU_SAS_MAX_ARBITRATION_WAIT_TIME_TIMEOUT_VALUE_MASK        (0x00007FFF)
+#define SCU_SAS_MAX_ARBITRATION_WAIT_TIME_TIMEOUT_SCALE_SHIFT       (15)
+#define SCU_SAS_MAX_ARBITRATION_WAIT_TIME_TIMEOUT_SCALE_MASK        (0x00008000)
+
+#define SCU_SAS_MAWTTOV_GEN_VALUE(name, value) \
+	SCU_GEN_VALUE(SCU_SAS_MAX_ARBITRATION_WAIT_TIME_TIMEOUT_ ## name, value)
+
+#define SCU_SAS_MAWTTOV_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_SAS_MAX_ARBITRATION_WAIT_TIME_TIMEOUT_ ## name)
+
+
+/*
+ * TODO: Where is the SAS_LNKTOV regsiter?
+ * TODO: Where is the SAS_PHYTOV register? */
+
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_SMP_TARGET_SHIFT            (1)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_SMP_TARGET_MASK             (0x00000002)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_STP_TARGET_SHIFT            (2)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_STP_TARGET_MASK             (0x00000004)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_SSP_TARGET_SHIFT            (3)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_SSP_TARGET_MASK             (0x00000008)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_DA_SATA_HOST_SHIFT          (8)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_DA_SATA_HOST_MASK           (0x00000100)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_SMP_INITIATOR_SHIFT         (9)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_SMP_INITIATOR_MASK          (0x00000200)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_STP_INITIATOR_SHIFT         (10)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_STP_INITIATOR_MASK          (0x00000400)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_SSP_INITIATOR_SHIFT         (11)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_SSP_INITIATOR_MASK          (0x00000800)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_REASON_CODE_SHIFT           (16)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_REASON_CODE_MASK            (0x000F0000)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_ADDRESS_FRAME_TYPE_SHIFT    (24)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_ADDRESS_FRAME_TYPE_MASK     (0x0F000000)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_DEVICE_TYPE_SHIFT           (28)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_DEVICE_TYPE_MASK            (0x70000000)
+#define SCU_SAS_TRANSMIT_IDENTIFICATION_RESERVED_MASK               (0x80F0F1F1)
+
+#define SCU_SAS_TIID_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SCU_SAS_TRANSMIT_IDENTIFICATION_ ## name, value)
+
+#define SCU_SAS_TIID_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_SAS_TRANSMIT_IDENTIFICATION_ ## name)
+
+/* SAS Identify Frame PHY Identifier Register */
+#define SCU_LINK_LAYER_IDENTIFY_FRAME_PHY_IDENTIFIER_BREAK_REPLY_CAPABLE_SHIFT      (16)
+#define SCU_LINK_LAYER_IDENTIFY_FRAME_PHY_IDENTIFIER_BREAK_REPLY_CAPABLE_MASK       (0x00010000)
+#define SCU_LINK_LAYER_IDENTIFY_FRAME_PHY_IDENTIFIER_REQUESTED_INSIDE_ZPSDS_SHIFT   (17)
+#define SCU_LINK_LAYER_IDENTIFY_FRAME_PHY_IDENTIFIER_REQUESTED_INSIDE_ZPSDS_MASK    (0x00020000)
+#define SCU_LINK_LAYER_IDENTIFY_FRAME_PHY_IDENTIFIER_INSIDE_ZPSDS_PERSISTENT_SHIFT  (18)
+#define SCU_LINK_LAYER_IDENTIFY_FRAME_PHY_IDENTIFIER_INSIDE_ZPSDS_PERSISTENT_MASK   (0x00040000)
+#define SCU_LINK_LAYER_IDENTIFY_FRAME_PHY_IDENTIFIER_ID_SHIFT                       (24)
+#define SCU_LINK_LAYER_IDENTIFY_FRAME_PHY_IDENTIFIER_ID_MASK                        (0xFF000000)
+#define SCU_LINK_LAYER_IDENTIFY_FRAME_PHY_IDENTIFIER_RESERVED_MASK                  (0x00F800FF)
+
+#define SCU_SAS_TIPID_GEN_VALUE(name, value) \
+	SCU_GEN_VALUE(SCU_LINK_LAYER_IDENTIFY_FRAME_PHY_IDENTIFIER_ ## name, value)
+
+#define SCU_SAS_TIPID_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_LINK_LAYER_IDENTIFY_FRAME_PHY_IDENTIFIER_ ## name)
+
+
+#define SCU_SAS_PHY_CONFIGURATION_TX_PARITY_CHECK_SHIFT                     (4)
+#define SCU_SAS_PHY_CONFIGURATION_TX_PARITY_CHECK_MASK                      (0x00000010)
+#define SCU_SAS_PHY_CONFIGURATION_TX_BAD_CRC_SHIFT                          (6)
+#define SCU_SAS_PHY_CONFIGURATION_TX_BAD_CRC_MASK                           (0x00000040)
+#define SCU_SAS_PHY_CONFIGURATION_DISABLE_SCRAMBLER_SHIFT                   (7)
+#define SCU_SAS_PHY_CONFIGURATION_DISABLE_SCRAMBLER_MASK                    (0x00000080)
+#define SCU_SAS_PHY_CONFIGURATION_DISABLE_DESCRAMBLER_SHIFT                 (8)
+#define SCU_SAS_PHY_CONFIGURATION_DISABLE_DESCRAMBLER_MASK                  (0x00000100)
+#define SCU_SAS_PHY_CONFIGURATION_DISABLE_CREDIT_INSERTION_SHIFT            (9)
+#define SCU_SAS_PHY_CONFIGURATION_DISABLE_CREDIT_INSERTION_MASK             (0x00000200)
+#define SCU_SAS_PHY_CONFIGURATION_SUSPEND_PROTOCOL_ENGINE_SHIFT             (11)
+#define SCU_SAS_PHY_CONFIGURATION_SUSPEND_PROTOCOL_ENGINE_MASK              (0x00000800)
+#define SCU_SAS_PHY_CONFIGURATION_SATA_SPINUP_HOLD_SHIFT                    (12)
+#define SCU_SAS_PHY_CONFIGURATION_SATA_SPINUP_HOLD_MASK                     (0x00001000)
+#define SCU_SAS_PHY_CONFIGURATION_TRANSMIT_PORT_SELECTION_SIGNAL_SHIFT      (13)
+#define SCU_SAS_PHY_CONFIGURATION_TRANSMIT_PORT_SELECTION_SIGNAL_MASK       (0x00002000)
+#define SCU_SAS_PHY_CONFIGURATION_HARD_RESET_SHIFT                          (14)
+#define SCU_SAS_PHY_CONFIGURATION_HARD_RESET_MASK                           (0x00004000)
+#define SCU_SAS_PHY_CONFIGURATION_OOB_ENABLE_SHIFT                          (15)
+#define SCU_SAS_PHY_CONFIGURATION_OOB_ENABLE_MASK                           (0x00008000)
+#define SCU_SAS_PHY_CONFIGURATION_ENABLE_FRAME_TX_INSERT_ALIGN_SHIFT        (23)
+#define SCU_SAS_PHY_CONFIGURATION_ENABLE_FRAME_TX_INSERT_ALIGN_MASK         (0x00800000)
+#define SCU_SAS_PHY_CONFIGURATION_FORWARD_IDENTIFY_FRAME_SHIFT              (27)
+#define SCU_SAS_PHY_CONFIGURATION_FORWARD_IDENTIFY_FRAME_MASK               (0x08000000)
+#define SCU_SAS_PHY_CONFIGURATION_DISABLE_BYTE_TRANSPOSE_STP_FRAME_SHIFT    (28)
+#define SCU_SAS_PHY_CONFIGURATION_DISABLE_BYTE_TRANSPOSE_STP_FRAME_MASK     (0x10000000)
+#define SCU_SAS_PHY_CONFIGURATION_OOB_RESET_SHIFT                           (29)
+#define SCU_SAS_PHY_CONFIGURATION_OOB_RESET_MASK                            (0x20000000)
+#define SCU_SAS_PHY_CONFIGURATION_THREE_IAF_ENABLE_SHIFT                    (30)
+#define SCU_SAS_PHY_CONFIGURATION_THREE_IAF_ENABLE_MASK                     (0x40000000)
+#define SCU_SAS_PHY_CONFIGURATION_OOB_ALIGN0_ENABLE_SHIFT                   (31)
+#define SCU_SAS_PHY_CONFIGURATION_OOB_ALIGN0_ENABLE_MASK                    (0x80000000)
+#define SCU_SAS_PHY_CONFIGURATION_REQUIRED_MASK                             (0x0100000F)
+#define SCU_SAS_PHY_CONFIGURATION_DEFAULT_MASK                              (0x4180100F)
+#define SCU_SAS_PHY_CONFIGURATION_RESERVED_MASK                             (0x00000000)
+
+#define SCU_SAS_PCFG_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_SAS_PHY_CONFIGURATION_ ## name)
+
+#define SCU_LINK_LAYER_ALIGN_INSERTION_FREQUENCY_GENERAL_SHIFT      (0)
+#define SCU_LINK_LAYER_ALIGN_INSERTION_FREQUENCY_GENERAL_MASK       (0x000007FF)
+#define SCU_LINK_LAYER_ALIGN_INSERTION_FREQUENCY_CONNECTED_SHIFT    (16)
+#define SCU_LINK_LAYER_ALIGN_INSERTION_FREQUENCY_CONNECTED_MASK     (0x00ff0000)
+
+#define SCU_ALIGN_INSERTION_FREQUENCY_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SCU_LINK_LAYER_ALIGN_INSERTION_FREQUENCY_##name, value)
+
+#define SCU_LINK_LAYER_ENABLE_SPINUP_CONTROL_COUNT_SHIFT    (0)
+#define SCU_LINK_LAYER_ENABLE_SPINUP_CONTROL_COUNT_MASK     (0x0003FFFF)
+#define SCU_LINK_LAYER_ENABLE_SPINUP_CONTROL_ENABLE_SHIFT   (31)
+#define SCU_LINK_LAYER_ENABLE_SPINUP_CONTROL_ENABLE_MASK    (0x80000000)
+#define SCU_LINK_LAYER_ENABLE_SPINUP_CONTROL_RESERVED_MASK  (0x7FFC0000)
+
+#define SCU_ENSPINUP_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SCU_LINK_LAYER_ENABLE_SPINUP_CONTROL_ ## name, value)
+
+#define SCU_ENSPINUP_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_LINK_LAYER_ENABLE_SPINUP_CONTROL_ ## name)
+
+
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_TXSSCTYPE_SHIFT     (1)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_TXSSCTYPE_MASK      (0x00000002)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_RLLRATE_SHIFT       (4)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_RLLRATE_MASK        (0x000000F0)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_SWO15GBPS_SHIFT     (8)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_SWO15GBPS_MASK      (0x00000100)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_SW15GBPS_SHIFT      (9)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_SW15GBPS_MASK       (0x00000201)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_SWO30GBPS_SHIFT     (10)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_SWO30GBPS_MASK      (0x00000401)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_SW30GBPS_SHIFT      (11)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_SW30GBPS_MASK       (0x00000801)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_SWO60GBPS_SHIFT     (12)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_SWO60GBPS_MASK      (0x00001001)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_SW60GBPS_SHIFT      (13)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_SW60GBPS_MASK       (0x00002001)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_EVEN_PARITY_SHIFT   (31)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_EVEN_PARITY_MASK    (0x80000000)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_DEFAULT_MASK        (0x00003F01)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_REQUIRED_MASK       (0x00000001)
+#define SCU_LINK_LAYER_PHY_CAPABILITIES_RESERVED_MASK       (0x7FFFC00D)
+
+#define SCU_SAS_PHYCAP_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SCU_LINK_LAYER_PHY_CAPABILITIES_ ## name, value)
+
+#define SCU_SAS_PHYCAP_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_LINK_LAYER_PHY_CAPABILITIES_ ## name)
+
+
+#define SCU_LINK_LAYER_PHY_SOURCE_ZONE_GROUP_CONTROL_VIRTUAL_EXPANDER_PHY_ZONE_GROUP_SHIFT  (0)
+#define SCU_LINK_LAYER_PHY_SOURCE_ZONE_GROUP_CONTROL_VIRTUAL_EXPANDER_PHY_ZONE_GROUP_MASK   (0x000000FF)
+#define SCU_LINK_LAYER_PHY_SOURCE_ZONE_GROUP_CONTROL_INSIDE_SOURCE_ZONE_GROUP_SHIFT         (31)
+#define SCU_LINK_LAYER_PHY_SOURCE_ZONE_GROUP_CONTROL_INSIDE_SOURCE_ZONE_GROUP_MASK          (0x80000000)
+#define SCU_LINK_LAYER_PHY_SOURCE_ZONE_GROUP_CONTROL_RESERVED_MASK                          (0x7FFFFF00)
+
+#define SCU_PSZGCR_GEN_VAL(name, value)	\
+	SCU_GEN_VALUE(SCU_LINK_LAYER_PHY_SOURCE_ZONE_GROUP_CONTROL_ ## name, value)
+
+#define SCU_PSZGCR_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_LINK_LAYER_PHY_SOURCE_ZONE_GROUP_CONTROL_ ## name)
+
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZONE0_LOCKED_SHIFT        (1)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZONE0_LOCKED_MASK         (0x00000002)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZONE0_UPDATING_SHIFT      (2)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZONE0_UPDATING_MASK       (0x00000004)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZONE1_LOCKED_SHIFT        (4)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZONE1_LOCKED_MASK         (0x00000010)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZONE1_UPDATING_SHIFT      (5)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZONE1_UPDATING_MASK       (0x00000020)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZPT_ASSOCIATION_PE0_SHIFT (16)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZPT_ASSOCIATION_PE0_MASK  (0x00030000)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_AIP_ENABLE_PE0_SHIFT      (19)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_AIP_ENABLE_PE0_MASK       (0x00080000)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZPT_ASSOCIATION_PE1_SHIFT (20)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZPT_ASSOCIATION_PE1_MASK  (0x00300000)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_AIP_ENABLE_PE1_SHIFT      (23)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_AIP_ENABLE_PE1_MASK       (0x00800000)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZPT_ASSOCIATION_PE2_SHIFT (24)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZPT_ASSOCIATION_PE2_MASK  (0x03000000)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_AIP_ENABLE_PE2_SHIFT      (27)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_AIP_ENABLE_PE2_MASK       (0x08000000)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZPT_ASSOCIATION_PE3_SHIFT (28)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ZPT_ASSOCIATION_PE3_MASK  (0x30000000)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_AIP_ENABLE_PE3_SHIFT      (31)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_AIP_ENABLE_PE3_MASK       (0x80000000)
+#define SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_RESERVED_MASK             (0x4444FFC9)
+
+#define SCU_PEG_SCUVZECR_GEN_VAL(name, val) \
+	SCU_GEN_VALUE(SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ ## name, val)
+
+#define SCU_PEG_SCUVZECR_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_PROTOCOL_ENGINE_GROUP_VIRTUAL_ZONING_EXPANDER_CONTROL_ ## name)
+
+
+/*
+ * *****************************************************************************
+ * * Port Task Scheduler registers shift and mask values
+ * ***************************************************************************** */
+#define SCU_PTSG_CONTROL_IT_NEXUS_TIMEOUT_SHIFT     (0)
+#define SCU_PTSG_CONTROL_IT_NEXUS_TIMEOUT_MASK      (0x0000FFFF)
+#define SCU_PTSG_CONTROL_TASK_TIMEOUT_SHIFT         (16)
+#define SCU_PTSG_CONTROL_TASK_TIMEOUT_MASK          (0x00FF0000)
+#define SCU_PTSG_CONTROL_PTSG_ENABLE_SHIFT          (24)
+#define SCU_PTSG_CONTROL_PTSG_ENABLE_MASK           (0x01000000)
+#define SCU_PTSG_CONTROL_ETM_ENABLE_SHIFT           (25)
+#define SCU_PTSG_CONTROL_ETM_ENABLE_MASK            (0x02000000)
+#define SCU_PTSG_CONTROL_DEFAULT_MASK               (0x00020002)
+#define SCU_PTSG_CONTROL_REQUIRED_MASK              (0x00000000)
+#define SCU_PTSG_CONTROL_RESERVED_MASK              (0xFC000000)
+
+#define SCU_PTSGCR_GEN_VAL(name, val) \
+	SCU_GEN_VALUE(SCU_PTSG_CONTROL_ ## name, val)
+
+#define SCU_PTSGCR_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_PTSG_CONTROL_ ## name)
+
+
+/* ***************************************************************************** */
+#define SCU_PTSG_REAL_TIME_CLOCK_SHIFT          (0)
+#define SCU_PTSG_REAL_TIME_CLOCK_MASK           (0x0000FFFF)
+#define SCU_PTSG_REAL_TIME_CLOCK_RESERVED_MASK  (0xFFFF0000)
+
+#define SCU_RTCR_GEN_VAL(name, val) \
+	SCU_GEN_VALUE(SCU_PTSG_ ## name, val)
+
+
+#define SCU_PTSG_REAL_TIME_CLOCK_CONTROL_PRESCALER_VALUE_SHIFT  (0)
+#define SCU_PTSG_REAL_TIME_CLOCK_CONTROL_PRESCALER_VALUE_MASK   (0x00FFFFFF)
+#define SCU_PTSG_REAL_TIME_CLOCK_CONTROL_RESERVED_MASK          (0xFF000000)
+
+#define SCU_RTCCR_GEN_VAL(name, val) \
+	SCU_GEN_VALUE(SCU_PTSG_REAL_TIME_CLOCK_CONTROL_ ## name, val)
+
+
+#define SCU_PTSG_PORT_TASK_SCHEDULER_CONTROL_SUSPEND_SHIFT  (0)
+#define SCU_PTSG_PORT_TASK_SCHEDULER_CONTROL_SUSPEND_MASK   (0x00000001)
+#define SCU_PTSG_PORT_TASK_SCHEDULER_CONTROL_ENABLE_SHIFT   (1)
+#define SCU_PTSG_PORT_TASK_SCHEDULER_CONTROL_ENABLE_MASK    (0x00000002)
+#define SCU_PTSG_PORT_TASK_SCHEDULER_CONTROL_RESERVED_MASK  (0xFFFFFFFC)
+
+#define SCU_PTSxCR_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_PTSG_PORT_TASK_SCHEDULER_CONTROL_ ## name)
+
+
+#define SCU_PTSG_PORT_TASK_SCHEDULER_STATUS_NEXT_RN_VALID_SHIFT             (0)
+#define SCU_PTSG_PORT_TASK_SCHEDULER_STATUS_NEXT_RN_VALID_MASK              (0x00000001)
+#define SCU_PTSG_PORT_TASK_SCHEDULER_STATUS_ACTIVE_RNSC_LIST_VALID_SHIFT    (1)
+#define SCU_PTSG_PORT_TASK_SCHEDULER_STATUS_ACTIVE_RNSC_LIST_VALID_MASK     (0x00000002)
+#define SCU_PTSG_PORT_TASK_SCHEDULER_STATUS_PTS_SUSPENDED_SHIFT             (2)
+#define SCU_PTSG_PORT_TASK_SCHEDULER_STATUS_PTS_SUSPENDED_MASK              (0x00000004)
+#define SCU_PTSG_PORT_TASK_SCHEDULER_STATUS_RESERVED_MASK                   (0xFFFFFFF8)
+
+#define SCU_PTSxSR_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_PTSG_PORT_TASK_SCHEDULER_STATUS_ ## name)
+
+
+/*
+ * *****************************************************************************
+ * * SGPIO Register shift and mask values
+ * ***************************************************************************** */
+#define SCU_SGPIO_CONTROL_SGPIO_ENABLE_SHIFT                    (0)
+#define SCU_SGPIO_CONTROL_SGPIO_ENABLE_MASK                     (0x00000001)
+#define SCU_SGPIO_CONTROL_SGPIO_SERIAL_CLOCK_SELECT_SHIFT       (1)
+#define SCU_SGPIO_CONTROL_SGPIO_SERIAL_CLOCK_SELECT_MASK        (0x00000002)
+#define SCU_SGPIO_CONTROL_SGPIO_SERIAL_SHIFT_WIDTH_SELECT_SHIFT (2)
+#define SCU_SGPIO_CONTROL_SGPIO_SERIAL_SHIFT_WIDTH_SELECT_MASK  (0x00000004)
+#define SCU_SGPIO_CONTROL_SGPIO_TEST_BIT_SHIFT                  (15)
+#define SCU_SGPIO_CONTROL_SGPIO_TEST_BIT_MASK                   (0x00008000)
+#define SCU_SGPIO_CONTROL_SGPIO_RESERVED_MASK                   (0xFFFF7FF8)
+
+#define SCU_SGICRx_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_SGPIO_CONTROL_SGPIO_ ## name)
+
+#define SCU_SGPIO_PROGRAMMABLE_BLINK_REGISTER_R0_SHIFT      (0)
+#define SCU_SGPIO_PROGRAMMABLE_BLINK_REGISTER_R0_MASK       (0x0000000F)
+#define SCU_SGPIO_PROGRAMMABLE_BLINK_REGISTER_R1_SHIFT      (4)
+#define SCU_SGPIO_PROGRAMMABLE_BLINK_REGISTER_R1_MASK       (0x000000F0)
+#define SCU_SGPIO_PROGRAMMABLE_BLINK_REGISTER_R2_SHIFT      (8)
+#define SCU_SGPIO_PROGRAMMABLE_BLINK_REGISTER_R2_MASK       (0x00000F00)
+#define SCU_SGPIO_PROGRAMMABLE_BLINK_REGISTER_R3_SHIFT      (12)
+#define SCU_SGPIO_PROGRAMMABLE_BLINK_REGISTER_R3_MASK       (0x0000F000)
+#define SCU_SGPIO_PROGRAMMABLE_BLINK_REGISTER_RESERVED_MASK (0xFFFF0000)
+
+#define SCU_SGPBRx_GEN_VAL(name, value)	\
+	SCU_GEN_VALUE(SCU_SGPIO_PROGRAMMABLE_BLINK_REGISTER_ ## name, value)
+
+#define SCU_SGPIO_START_DRIVE_LOWER_R0_SHIFT        (0)
+#define SCU_SGPIO_START_DRIVE_LOWER_R0_MASK         (0x00000003)
+#define SCU_SGPIO_START_DRIVE_LOWER_R1_SHIFT        (4)
+#define SCU_SGPIO_START_DRIVE_LOWER_R1_MASK         (0x00000030)
+#define SCU_SGPIO_START_DRIVE_LOWER_R2_SHIFT        (8)
+#define SCU_SGPIO_START_DRIVE_LOWER_R2_MASK         (0x00000300)
+#define SCU_SGPIO_START_DRIVE_LOWER_R3_SHIFT        (12)
+#define SCU_SGPIO_START_DRIVE_LOWER_R3_MASK         (0x00003000)
+#define SCU_SGPIO_START_DRIVE_LOWER_RESERVED_MASK   (0xFFFF8888)
+
+#define SCU_SGSDLRx_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SCU_SGPIO_START_DRIVE_LOWER_ ## name, value)
+
+#define SCU_SGPIO_START_DRIVE_UPPER_R0_SHIFT        (0)
+#define SCU_SGPIO_START_DRIVE_UPPER_R0_MASK         (0x00000003)
+#define SCU_SGPIO_START_DRIVE_UPPER_R1_SHIFT        (4)
+#define SCU_SGPIO_START_DRIVE_UPPER_R1_MASK         (0x00000030)
+#define SCU_SGPIO_START_DRIVE_UPPER_R2_SHIFT        (8)
+#define SCU_SGPIO_START_DRIVE_UPPER_R2_MASK         (0x00000300)
+#define SCU_SGPIO_START_DRIVE_UPPER_R3_SHIFT        (12)
+#define SCU_SGPIO_START_DRIVE_UPPER_R3_MASK         (0x00003000)
+#define SCU_SGPIO_START_DRIVE_UPPER_RESERVED_MASK   (0xFFFF8888)
+
+#define SCU_SGSDURx_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SCU_SGPIO_START_DRIVE_LOWER_ ## name, value)
+
+#define SCU_SGPIO_SERIAL_INPUT_DATA_LOWER_D0_SHIFT      (0)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_LOWER_D0_MASK       (0x00000003)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_LOWER_D1_SHIFT      (4)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_LOWER_D1_MASK       (0x00000030)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_LOWER_D2_SHIFT      (8)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_LOWER_D2_MASK       (0x00000300)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_LOWER_D3_SHIFT      (12)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_LOWER_D3_MASK       (0x00003000)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_LOWER_RESERVED_MASK (0xFFFF8888)
+
+#define SCU_SGSIDLRx_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SCU_SGPIO_SERIAL_INPUT_DATA_LOWER_ ## name, value)
+
+#define SCU_SGPIO_SERIAL_INPUT_DATA_UPPER_D0_SHIFT      (0)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_UPPER_D0_MASK       (0x00000003)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_UPPER_D1_SHIFT      (4)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_UPPER_D1_MASK       (0x00000030)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_UPPER_D2_SHIFT      (8)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_UPPER_D2_MASK       (0x00000300)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_UPPER_D3_SHIFT      (12)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_UPPER_D3_MASK       (0x00003000)
+#define SCU_SGPIO_SERIAL_INPUT_DATA_UPPER_RESERVED_MASK (0xFFFF8888)
+
+#define SCU_SGSIDURx_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SCU_SGPIO_SERIAL_INPUT_DATA_LOWER_ ## name, value)
+
+#define SCU_SGPIO_VENDOR_SPECIFIC_CODE_SHIFT            (0)
+#define SCU_SGPIO_VENDOR_SPECIFIC_CODE_MASK             (0x0000000F)
+#define SCU_SGPIO_VENDOR_SPECIFIC_CODE_RESERVED_MASK    (0xFFFFFFF0)
+
+#define SCU_SGVSCR_GEN_VAL(value) \
+	SCU_GEN_VALUE(SCU_SGPIO_VENDOR_SPECIFIC_CODE ## name, value)
+
+#define SCU_SGPIO_OUPUT_DATA_SELECT_INPUT_DATA0_SHIFT           (0)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_INPUT_DATA0_MASK            (0x00000003)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_INVERT_INPUT_DATA0_SHIFT    (2)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_INVERT_INPUT_DATA0_MASK     (0x00000004)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_JOG_ENABLE_DATA0_SHIFT      (3)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_JOG_ENABLE_DATA0_MASK       (0x00000008)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_INPUT_DATA1_SHIFT           (4)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_INPUT_DATA1_MASK            (0x00000030)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_INVERT_INPUT_DATA1_SHIFT    (6)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_INVERT_INPUT_DATA1_MASK     (0x00000040)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_JOG_ENABLE_DATA1_SHIFT      (7)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_JOG_ENABLE_DATA1_MASK       (0x00000080)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_INPUT_DATA2_SHIFT           (8)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_INPUT_DATA2_MASK            (0x00000300)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_INVERT_INPUT_DATA2_SHIFT    (10)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_INVERT_INPUT_DATA2_MASK     (0x00000400)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_JOG_ENABLE_DATA2_SHIFT      (11)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_JOG_ENABLE_DATA2_MASK       (0x00000800)
+#define SCU_SGPIO_OUPUT_DATA_SELECT_RESERVED_MASK               (0xFFFFF000)
+
+#define SCU_SGODSR_GEN_VAL(name, value)	\
+	SCU_GEN_VALUE(SCU_SGPIO_OUPUT_DATA_SELECT_ ## name, value)
+
+#define SCU_SGODSR_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_SGPIO_OUPUT_DATA_SELECT_ ## name)
+
+/*
+ * *****************************************************************************
+ * * SMU Registers
+ * ***************************************************************************** */
+
+/*
+ * ----------------------------------------------------------------------------
+ * SMU Registers
+ * These registers are based off of BAR0
+ *
+ * To calculate the offset for other functions use
+ *       BAR0 + FN# * SystemPageSize * 2
+ *
+ * The TCA is only accessable from FN#0 (Physical Function) and each
+ * is programmed by (BAR0 + SCU_SMU_TCA_OFFSET + (FN# * 0x04)) or
+ *    TCA0 for FN#0 is at BAR0 + 0x0400
+ *    TCA1 for FN#1 is at BAR0 + 0x0404
+ *    etc.
+ * ----------------------------------------------------------------------------
+ * Accessable to all FN#s */
+#define SCU_SMU_PCP_OFFSET          0x0000
+#define SCU_SMU_AMR_OFFSET          0x0004
+#define SCU_SMU_ISR_OFFSET          0x0010
+#define SCU_SMU_IMR_OFFSET          0x0014
+#define SCU_SMU_ICC_OFFSET          0x0018
+#define SCU_SMU_HTTLBAR_OFFSET      0x0020
+#define SCU_SMU_HTTUBAR_OFFSET      0x0024
+#define SCU_SMU_TCR_OFFSET          0x0028
+#define SCU_SMU_CQLBAR_OFFSET       0x0030
+#define SCU_SMU_CQUBAR_OFFSET       0x0034
+#define SCU_SMU_CQPR_OFFSET         0x0040
+#define SCU_SMU_CQGR_OFFSET         0x0044
+#define SCU_SMU_CQC_OFFSET          0x0048
+/* Accessable to FN#0 only */
+#define SCU_SMU_RNCLBAR_OFFSET      0x0080
+#define SCU_SMU_RNCUBAR_OFFSET      0x0084
+#define SCU_SMU_DCC_OFFSET          0x0090
+#define SCU_SMU_DFC_OFFSET          0x0094
+#define SCU_SMU_SMUCSR_OFFSET       0x0098
+#define SCU_SMU_SCUSRCR_OFFSET      0x009C
+#define SCU_SMU_SMAW_OFFSET         0x00A0
+#define SCU_SMU_SMDW_OFFSET         0x00A4
+/* Accessable to FN#0 only */
+#define SCU_SMU_TCA_OFFSET          0x0400
+/* Accessable to all FN#s */
+#define SCU_SMU_MT_MLAR0_OFFSET     0x2000
+#define SCU_SMU_MT_MUAR0_OFFSET     0x2004
+#define SCU_SMU_MT_MDR0_OFFSET      0x2008
+#define SCU_SMU_MT_VCR0_OFFSET      0x200C
+#define SCU_SMU_MT_MLAR1_OFFSET     0x2010
+#define SCU_SMU_MT_MUAR1_OFFSET     0x2014
+#define SCU_SMU_MT_MDR1_OFFSET      0x2018
+#define SCU_SMU_MT_VCR1_OFFSET      0x201C
+#define SCU_SMU_MPBA_OFFSET         0x3000
+
+/**
+ * struct smu_registers - These are the SMU registers
+ *
+ *
+ */
+struct smu_registers {
+/* 0x0000 PCP */
+	u32 post_context_port;
+/* 0x0004 AMR */
+	u32 address_modifier;
+	u32 reserved_08;
+	u32 reserved_0C;
+/* 0x0010 ISR */
+	u32 interrupt_status;
+/* 0x0014 IMR */
+	u32 interrupt_mask;
+/* 0x0018 ICC */
+	u32 interrupt_coalesce_control;
+	u32 reserved_1C;
+/* 0x0020 HTTLBAR */
+	u32 host_task_table_lower;
+/* 0x0024 HTTUBAR */
+	u32 host_task_table_upper;
+/* 0x0028 TCR */
+	u32 task_context_range;
+	u32 reserved_2C;
+/* 0x0030 CQLBAR */
+	u32 completion_queue_lower;
+/* 0x0034 CQUBAR */
+	u32 completion_queue_upper;
+	u32 reserved_38;
+	u32 reserved_3C;
+/* 0x0040 CQPR */
+	u32 completion_queue_put;
+/* 0x0044 CQGR */
+	u32 completion_queue_get;
+/* 0x0048 CQC */
+	u32 completion_queue_control;
+	u32 reserved_4C;
+	u32 reserved_5x[4];
+	u32 reserved_6x[4];
+	u32 reserved_7x[4];
+/*
+ * Accessable to FN#0 only
+ * 0x0080 RNCLBAR */
+	u32 remote_node_context_lower;
+/* 0x0084 RNCUBAR */
+	u32 remote_node_context_upper;
+	u32 reserved_88;
+	u32 reserved_8C;
+/* 0x0090 DCC */
+	u32 device_context_capacity;
+/* 0x0094 DFC */
+	u32 device_function_capacity;
+/* 0x0098 SMUCSR */
+	u32 control_status;
+/* 0x009C SCUSRCR */
+	u32 soft_reset_control;
+/* 0x00A0 SMAW */
+	u32 mmr_address_window;
+/* 0x00A4 SMDW */
+	u32 mmr_data_window;
+	u32 reserved_A8;
+	u32 reserved_AC;
+/* A whole bunch of reserved space */
+	u32 reserved_Bx[4];
+	u32 reserved_Cx[4];
+	u32 reserved_Dx[4];
+	u32 reserved_Ex[4];
+	u32 reserved_Fx[4];
+	u32 reserved_1xx[64];
+	u32 reserved_2xx[64];
+	u32 reserved_3xx[64];
+/*
+ * Accessable to FN#0 only
+ * 0x0400 TCA */
+	u32 task_context_assignment[256];
+/* MSI-X registers not included */
+};
+
+/*
+ * *****************************************************************************
+ * SDMA Registers
+ * ***************************************************************************** */
+#define SCU_SDMA_BASE               0x6000
+#define SCU_SDMA_PUFATLHAR_OFFSET   0x0000
+#define SCU_SDMA_PUFATUHAR_OFFSET   0x0004
+#define SCU_SDMA_UFLHBAR_OFFSET     0x0008
+#define SCU_SDMA_UFUHBAR_OFFSET     0x000C
+#define SCU_SDMA_UFQC_OFFSET        0x0010
+#define SCU_SDMA_UFQPP_OFFSET       0x0014
+#define SCU_SDMA_UFQGP_OFFSET       0x0018
+#define SCU_SDMA_PDMACR_OFFSET      0x001C
+#define SCU_SDMA_CDMACR_OFFSET      0x0080
+
+/**
+ * struct scu_sdma_registers - These are the SCU SDMA Registers
+ *
+ *
+ */
+struct scu_sdma_registers {
+/* 0x0000 PUFATLHAR */
+	u32 uf_address_table_lower;
+/* 0x0004 PUFATUHAR */
+	u32 uf_address_table_upper;
+/* 0x0008 UFLHBAR */
+	u32 uf_header_base_address_lower;
+/* 0x000C UFUHBAR */
+	u32 uf_header_base_address_upper;
+/* 0x0010 UFQC */
+	u32 unsolicited_frame_queue_control;
+/* 0x0014 UFQPP */
+	u32 unsolicited_frame_put_pointer;
+/* 0x0018 UFQGP */
+	u32 unsolicited_frame_get_pointer;
+/* 0x001C PDMACR */
+	u32 pdma_configuration;
+/* Reserved until offset 0x80 */
+	u32 reserved_0020_007C[0x18];
+/* 0x0080 CDMACR */
+	u32 cdma_configuration;
+/* Remainder SDMA register space */
+	u32 reserved_0084_0400[0xDF];
+
+};
+
+/*
+ * *****************************************************************************
+ * * SCU Link Registers
+ * ***************************************************************************** */
+#define SCU_PEG0_OFFSET    0x0000
+#define SCU_PEG1_OFFSET    0x8000
+
+#define SCU_TL0_OFFSET     0x0000
+#define SCU_TL1_OFFSET     0x0400
+#define SCU_TL2_OFFSET     0x0800
+#define SCU_TL3_OFFSET     0x0C00
+
+#define SCU_LL_OFFSET      0x0080
+#define SCU_LL0_OFFSET     (SCU_TL0_OFFSET + SCU_LL_OFFSET)
+#define SCU_LL1_OFFSET     (SCU_TL1_OFFSET + SCU_LL_OFFSET)
+#define SCU_LL2_OFFSET     (SCU_TL2_OFFSET + SCU_LL_OFFSET)
+#define SCU_LL3_OFFSET     (SCU_TL3_OFFSET + SCU_LL_OFFSET)
+
+/* Transport Layer Offsets (PEG + TL) */
+#define SCU_TLCR_OFFSET         0x0000
+#define SCU_TLADTR_OFFSET       0x0004
+#define SCU_TLTTMR_OFFSET       0x0008
+#define SCU_TLEECR0_OFFSET      0x000C
+#define SCU_STPTLDARNI_OFFSET   0x0010
+
+
+#define SCU_TLCR_HASH_SAS_CHECKING_ENABLE_SHIFT    (0)
+#define SCU_TLCR_HASH_SAS_CHECKING_ENABLE_MASK     (0x00000001)
+#define SCU_TLCR_CLEAR_TCI_NCQ_MAPPING_TABLE_SHIFT (1)
+#define SCU_TLCR_CLEAR_TCI_NCQ_MAPPING_TABLE_MASK  (0x00000002)
+#define SCU_TLCR_STP_WRITE_DATA_PREFETCH_SHIFT     (3)
+#define SCU_TLCR_STP_WRITE_DATA_PREFETCH_MASK      (0x00000008)
+#define SCU_TLCR_CMD_NAK_STATUS_CODE_SHIFT         (4)
+#define SCU_TLCR_CMD_NAK_STATUS_CODE_MASK          (0x00000010)
+#define SCU_TLCR_RESERVED_MASK                     (0xFFFFFFEB)
+
+#define SCU_TLCR_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_TLCR_ ## name)
+
+/**
+ * struct scu_transport_layer_registers - These are the SCU Transport Layer
+ *    registers
+ *
+ *
+ */
+struct scu_transport_layer_registers {
+	/* 0x0000 TLCR */
+	u32 control;
+	/* 0x0004 TLADTR */
+	u32 arbitration_delay_timer;
+	/* 0x0008 TLTTMR */
+	u32 timer_test_mode;
+	/* 0x000C reserved */
+	u32 reserved_0C;
+	/* 0x0010 STPTLDARNI */
+	u32 stp_rni;
+	/* 0x0014 TLFEWPORCTRL */
+	u32 tlfe_wpo_read_control;
+	/* 0x0018 TLFEWPORDATA */
+	u32 tlfe_wpo_read_data;
+	/* 0x001C RXTLSSCSR1 */
+	u32 rxtl_single_step_control_status_1;
+	/* 0x0020 RXTLSSCSR2 */
+	u32 rxtl_single_step_control_status_2;
+	/* 0x0024 AWTRDDCR */
+	u32 tlfe_awt_retry_delay_debug_control;
+	/* Remainder of TL memory space */
+	u32 reserved_0028_007F[0x16];
+
+};
+
+/* Protocol Engine Group Registers */
+#define SCU_SCUVZECRx_OFFSET        0x1080
+
+/* Link Layer Offsets (PEG + TL + LL) */
+#define SCU_SAS_SPDTOV_OFFSET       0x0000
+#define SCU_SAS_LLSTA_OFFSET        0x0004
+#define SCU_SATA_PSELTOV_OFFSET     0x0008
+#define SCU_SAS_TIMETOV_OFFSET      0x0010
+#define SCU_SAS_LOSTOT_OFFSET       0x0014
+#define SCU_SAS_LNKTOV_OFFSET       0x0018
+#define SCU_SAS_PHYTOV_OFFSET       0x001C
+#define SCU_SAS_AFERCNT_OFFSET      0x0020
+#define SCU_SAS_WERCNT_OFFSET       0x0024
+#define SCU_SAS_TIID_OFFSET         0x0028
+#define SCU_SAS_TIDNH_OFFSET        0x002C
+#define SCU_SAS_TIDNL_OFFSET        0x0030
+#define SCU_SAS_TISSAH_OFFSET       0x0034
+#define SCU_SAS_TISSAL_OFFSET       0x0038
+#define SCU_SAS_TIPID_OFFSET        0x003C
+#define SCU_SAS_TIRES2_OFFSET       0x0040
+#define SCU_SAS_ADRSTA_OFFSET       0x0044
+#define SCU_SAS_MAWTTOV_OFFSET      0x0048
+#define SCU_SAS_FRPLDFIL_OFFSET     0x0054
+#define SCU_SAS_RFCNT_OFFSET        0x0060
+#define SCU_SAS_TFCNT_OFFSET        0x0064
+#define SCU_SAS_RFDCNT_OFFSET       0x0068
+#define SCU_SAS_TFDCNT_OFFSET       0x006C
+#define SCU_SAS_LERCNT_OFFSET       0x0070
+#define SCU_SAS_RDISERRCNT_OFFSET   0x0074
+#define SCU_SAS_CRERCNT_OFFSET      0x0078
+#define SCU_STPCTL_OFFSET           0x007C
+#define SCU_SAS_PCFG_OFFSET         0x0080
+#define SCU_SAS_CLKSM_OFFSET        0x0084
+#define SCU_SAS_TXCOMWAKE_OFFSET    0x0088
+#define SCU_SAS_TXCOMINIT_OFFSET    0x008C
+#define SCU_SAS_TXCOMSAS_OFFSET     0x0090
+#define SCU_SAS_COMINIT_OFFSET      0x0094
+#define SCU_SAS_COMWAKE_OFFSET      0x0098
+#define SCU_SAS_COMSAS_OFFSET       0x009C
+#define SCU_SAS_SFERCNT_OFFSET      0x00A0
+#define SCU_SAS_CDFERCNT_OFFSET     0x00A4
+#define SCU_SAS_DNFERCNT_OFFSET     0x00A8
+#define SCU_SAS_PRSTERCNT_OFFSET    0x00AC
+#define SCU_SAS_CNTCTL_OFFSET       0x00B0
+#define SCU_SAS_SSPTOV_OFFSET       0x00B4
+#define SCU_FTCTL_OFFSET            0x00B8
+#define SCU_FRCTL_OFFSET            0x00BC
+#define SCU_FTWMRK_OFFSET           0x00C0
+#define SCU_ENSPINUP_OFFSET         0x00C4
+#define SCU_SAS_TRNTOV_OFFSET       0x00C8
+#define SCU_SAS_PHYCAP_OFFSET       0x00CC
+#define SCU_SAS_PHYCTL_OFFSET       0x00D0
+#define SCU_SAS_LLCTL_OFFSET        0x00D8
+#define SCU_AFE_XCVRCR_OFFSET       0x00DC
+#define SCU_AFE_LUTCR_OFFSET        0x00E0
+
+#define SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_SHIFT                  (0)
+#define SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_MASK                   (0x00000003)
+#define SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN1                   (0)
+#define SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN2                   (1)
+#define SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN3                   (2)
+#define SCU_SAS_LINK_LAYER_CONTROL_BROADCAST_PRIMITIVE_SHIFT            (2)
+#define SCU_SAS_LINK_LAYER_CONTROL_BROADCAST_PRIMITIVE_MASK             (0x000003FC)
+#define SCU_SAS_LINK_LAYER_CONTROL_CLOSE_NO_ACTIVE_TASK_DISABLE_SHIFT   (16)
+#define SCU_SAS_LINK_LAYER_CONTROL_CLOSE_NO_ACTIVE_TASK_DISABLE_MASK    (0x00010000)
+#define SCU_SAS_LINK_LAYER_CONTROL_CLOSE_NO_OUTBOUND_TASK_DISABLE_SHIFT (17)
+#define SCU_SAS_LINK_LAYER_CONTROL_CLOSE_NO_OUTBOUND_TASK_DISABLE_MASK  (0x00020000)
+#define SCU_SAS_LINK_LAYER_CONTROL_NO_OUTBOUND_TASK_TIMEOUT_SHIFT       (24)
+#define SCU_SAS_LINK_LAYER_CONTROL_NO_OUTBOUND_TASK_TIMEOUT_MASK        (0xFF000000)
+#define SCU_SAS_LINK_LAYER_CONTROL_RESERVED                             (0x00FCFC00)
+
+#define SCU_SAS_LLCTL_GEN_VAL(name, value) \
+	SCU_GEN_VALUE(SCU_SAS_LINK_LAYER_CONTROL_ ## name, value)
+
+#define SCU_SAS_LLCTL_GEN_BIT(name) \
+	SCU_GEN_BIT(SCU_SAS_LINK_LAYER_CONTROL_ ## name)
+
+
+/* #define SCU_FRXHECR_DCNT_OFFSET      0x00B0 */
+#define SCU_PSZGCR_OFFSET           0x00E4
+#define SCU_SAS_RECPHYCAP_OFFSET    0x00E8
+/* #define SCU_TX_LUTSEL_OFFSET         0x00B8 */
+
+#define SCU_SAS_PTxC_OFFSET         0x00D4 /* Same offset as SAS_TCTSTM */
+
+/**
+ * struct scu_link_layer_registers - SCU Link Layer Registers
+ *
+ *
+ */
+struct scu_link_layer_registers {
+/* 0x0000 SAS_SPDTOV */
+	u32 speed_negotiation_timers;
+/* 0x0004 SAS_LLSTA */
+	u32 link_layer_status;
+/* 0x0008 SATA_PSELTOV */
+	u32 port_selector_timeout;
+	u32 reserved0C;
+/* 0x0010 SAS_TIMETOV */
+	u32 timeout_unit_value;
+/* 0x0014 SAS_RCDTOV */
+	u32 rcd_timeout;
+/* 0x0018 SAS_LNKTOV */
+	u32 link_timer_timeouts;
+/* 0x001C SAS_PHYTOV */
+	u32 sas_phy_timeouts;
+/* 0x0020 SAS_AFERCNT */
+	u32 received_address_frame_error_counter;
+/* 0x0024 SAS_WERCNT */
+	u32 invalid_dword_counter;
+/* 0x0028 SAS_TIID */
+	u32 transmit_identification;
+/* 0x002C SAS_TIDNH */
+	u32 sas_device_name_high;
+/* 0x0030 SAS_TIDNL */
+	u32 sas_device_name_low;
+/* 0x0034 SAS_TISSAH */
+	u32 source_sas_address_high;
+/* 0x0038 SAS_TISSAL */
+	u32 source_sas_address_low;
+/* 0x003C SAS_TIPID */
+	u32 identify_frame_phy_id;
+/* 0x0040 SAS_TIRES2 */
+	u32 identify_frame_reserved;
+/* 0x0044 SAS_ADRSTA */
+	u32 received_address_frame;
+/* 0x0048 SAS_MAWTTOV */
+	u32 maximum_arbitration_wait_timer_timeout;
+/* 0x004C SAS_PTxC */
+	u32 transmit_primitive;
+/* 0x0050 SAS_RORES */
+	u32 error_counter_event_notification_control;
+/* 0x0054 SAS_FRPLDFIL */
+	u32 frxq_payload_fill_threshold;
+/* 0x0058 SAS_LLHANG_TOT */
+	u32 link_layer_hang_detection_timeout;
+	u32 reserved_5C;
+/* 0x0060 SAS_RFCNT */
+	u32 received_frame_count;
+/* 0x0064 SAS_TFCNT */
+	u32 transmit_frame_count;
+/* 0x0068 SAS_RFDCNT */
+	u32 received_dword_count;
+/* 0x006C SAS_TFDCNT */
+	u32 transmit_dword_count;
+/* 0x0070 SAS_LERCNT */
+	u32 loss_of_sync_error_count;
+/* 0x0074 SAS_RDISERRCNT */
+	u32 running_disparity_error_count;
+/* 0x0078 SAS_CRERCNT */
+	u32 received_frame_crc_error_count;
+/* 0x007C STPCTL */
+	u32 stp_control;
+/* 0x0080 SAS_PCFG */
+	u32 phy_configuration;
+/* 0x0084 SAS_CLKSM */
+	u32 clock_skew_management;
+/* 0x0088 SAS_TXCOMWAKE */
+	u32 transmit_comwake_signal;
+/* 0x008C SAS_TXCOMINIT */
+	u32 transmit_cominit_signal;
+/* 0x0090 SAS_TXCOMSAS */
+	u32 transmit_comsas_signal;
+/* 0x0094 SAS_COMINIT */
+	u32 cominit_control;
+/* 0x0098 SAS_COMWAKE */
+	u32 comwake_control;
+/* 0x009C SAS_COMSAS */
+	u32 comsas_control;
+/* 0x00A0 SAS_SFERCNT */
+	u32 received_short_frame_count;
+/* 0x00A4 SAS_CDFERCNT */
+	u32 received_frame_without_credit_count;
+/* 0x00A8 SAS_DNFERCNT */
+	u32 received_frame_after_done_count;
+/* 0x00AC SAS_PRSTERCNT */
+	u32 phy_reset_problem_count;
+/* 0x00B0 SAS_CNTCTL */
+	u32 counter_control;
+/* 0x00B4 SAS_SSPTOV */
+	u32 ssp_timer_timeout_values;
+/* 0x00B8 FTCTL */
+	u32 ftx_control;
+/* 0x00BC FRCTL */
+	u32 frx_control;
+/* 0x00C0 FTWMRK */
+	u32 ftx_watermark;
+/* 0x00C4 ENSPINUP */
+	u32 notify_enable_spinup_control;
+/* 0x00C8 SAS_TRNTOV */
+	u32 sas_training_sequence_timer_values;
+/* 0x00CC SAS_PHYCAP */
+	u32 phy_capabilities;
+/* 0x00D0 SAS_PHYCTL */
+	u32 phy_control;
+	u32 reserved_d4;
+/* 0x00D8 LLCTL */
+	u32 link_layer_control;
+/* 0x00DC AFE_XCVRCR */
+	u32 afe_xcvr_control;
+/* 0x00E0 AFE_LUTCR */
+	u32 afe_lookup_table_control;
+/* 0x00E4 PSZGCR */
+	u32 phy_source_zone_group_control;
+/* 0x00E8 SAS_RECPHYCAP */
+	u32 receive_phycap;
+	u32 reserved_ec;
+/* 0x00F0 SNAFERXRSTCTL */
+	u32 speed_negotiation_afe_rx_reset_control;
+/* 0x00F4 SAS_SSIPMCTL */
+	u32 power_management_control;
+/* 0x00F8 SAS_PSPREQ_PRIM */
+	u32 sas_pm_partial_request_primitive;
+/* 0x00FC SAS_PSSREQ_PRIM */
+	u32 sas_pm_slumber_request_primitive;
+/* 0x0100 SAS_PPSACK_PRIM */
+	u32 sas_pm_ack_primitive_register;
+/* 0x0104 SAS_PSNAK_PRIM */
+	u32 sas_pm_nak_primitive_register;
+/* 0x0108 SAS_SSIPMTOV */
+	u32 sas_primitive_timeout;
+	u32 reserved_10c;
+/* 0x0110 - 0x011C PLAPRDCTRLxREG */
+	u32 pla_product_control[4];
+/* 0x0120 PLAPRDSUMREG */
+	u32 pla_product_sum;
+/* 0x0124 PLACONTROLREG */
+	u32 pla_control;
+/* Remainder of memory space 896 bytes */
+	u32 reserved_0128_037f[0x96];
+
+};
+
+/*
+ * 0x00D4 // Same offset as SAS_TCTSTM SAS_PTxC
+ *   u32   primitive_transmit_control; */
+
+/*
+ * ----------------------------------------------------------------------------
+ * SGPIO
+ * ---------------------------------------------------------------------------- */
+#define SCU_SGPIO_OFFSET         0x1400
+
+/* #define SCU_SGPIO_OFFSET         0x6000   // later moves to 0x1400 see HSD 652625 */
+#define SCU_SGPIO_SGICR_OFFSET   0x0000
+#define SCU_SGPIO_SGPBR_OFFSET   0x0004
+#define SCU_SGPIO_SGSDLR_OFFSET  0x0008
+#define SCU_SGPIO_SGSDUR_OFFSET  0x000C
+#define SCU_SGPIO_SGSIDLR_OFFSET 0x0010
+#define SCU_SGPIO_SGSIDUR_OFFSET 0x0014
+#define SCU_SGPIO_SGVSCR_OFFSET  0x0018
+/* Address from 0x0820 to 0x083C */
+#define SCU_SGPIO_SGODSR_OFFSET  0x0020
+
+/**
+ * struct scu_sgpio_registers - SCU SGPIO Registers
+ *
+ *
+ */
+struct scu_sgpio_registers {
+/* 0x0000 SGPIO_SGICR */
+	u32 interface_control;
+/* 0x0004 SGPIO_SGPBR */
+	u32 blink_rate;
+/* 0x0008 SGPIO_SGSDLR */
+	u32 start_drive_lower;
+/* 0x000C SGPIO_SGSDUR */
+	u32 start_drive_upper;
+/* 0x0010 SGPIO_SGSIDLR */
+	u32 serial_input_lower;
+/* 0x0014 SGPIO_SGSIDUR */
+	u32 serial_input_upper;
+/* 0x0018 SGPIO_SGVSCR */
+	u32 vendor_specific_code;
+/* 0x0020 SGPIO_SGODSR */
+	u32 ouput_data_select[8];
+/* Remainder of memory space 256 bytes */
+	u32 reserved_1444_14ff[0x31];
+
+};
+
+/*
+ * *****************************************************************************
+ * * Defines for VIIT entry offsets
+ * * Access additional entries by SCU_VIIT_BASE + index * 0x10
+ * ***************************************************************************** */
+#define     SCU_VIIT_BASE     0x1c00
+
+struct scu_viit_registers {
+	u32 registers[256];
+};
+
+/*
+ * *****************************************************************************
+ * * SCU PORT TASK SCHEDULER REGISTERS
+ * ***************************************************************************** */
+
+#define SCU_PTSG_BASE               0x1000
+
+#define SCU_PTSG_PTSGCR_OFFSET      0x0000
+#define SCU_PTSG_RTCR_OFFSET        0x0004
+#define SCU_PTSG_RTCCR_OFFSET       0x0008
+#define SCU_PTSG_PTS0CR_OFFSET      0x0010
+#define SCU_PTSG_PTS0SR_OFFSET      0x0014
+#define SCU_PTSG_PTS1CR_OFFSET      0x0018
+#define SCU_PTSG_PTS1SR_OFFSET      0x001C
+#define SCU_PTSG_PTS2CR_OFFSET      0x0020
+#define SCU_PTSG_PTS2SR_OFFSET      0x0024
+#define SCU_PTSG_PTS3CR_OFFSET      0x0028
+#define SCU_PTSG_PTS3SR_OFFSET      0x002C
+#define SCU_PTSG_PCSPE0CR_OFFSET    0x0030
+#define SCU_PTSG_PCSPE1CR_OFFSET    0x0034
+#define SCU_PTSG_PCSPE2CR_OFFSET    0x0038
+#define SCU_PTSG_PCSPE3CR_OFFSET    0x003C
+#define SCU_PTSG_ETMTSCCR_OFFSET    0x0040
+#define SCU_PTSG_ETMRNSCCR_OFFSET   0x0044
+
+/**
+ * struct scu_port_task_scheduler_registers - These are the control/stats pairs
+ *    for each Port Task Scheduler.
+ *
+ *
+ */
+struct scu_port_task_scheduler_registers {
+	u32 control;
+	u32 status;
+};
+
+/**
+ * struct scu_port_task_scheduler_group_registers - These are the PORT Task
+ *    Scheduler registers
+ *
+ *
+ */
+struct scu_port_task_scheduler_group_registers {
+/* 0x0000 PTSGCR */
+	u32 control;
+/* 0x0004 RTCR */
+	u32 real_time_clock;
+/* 0x0008 RTCCR */
+	u32 real_time_clock_control;
+/* 0x000C */
+	u32 reserved_0C;
+/*
+ * 0x0010 PTS0CR
+ * 0x0014 PTS0SR
+ * 0x0018 PTS1CR
+ * 0x001C PTS1SR
+ * 0x0020 PTS2CR
+ * 0x0024 PTS2SR
+ * 0x0028 PTS3CR
+ * 0x002C PTS3SR */
+	struct scu_port_task_scheduler_registers port[4];
+/*
+ * 0x0030 PCSPE0CR
+ * 0x0034 PCSPE1CR
+ * 0x0038 PCSPE2CR
+ * 0x003C PCSPE3CR */
+	u32 protocol_engine[4];
+/* 0x0040 ETMTSCCR */
+	u32 tc_scanning_interval_control;
+/* 0x0044 ETMRNSCCR */
+	u32 rnc_scanning_interval_control;
+/* Remainder of memory space 128 bytes */
+	u32 reserved_1048_107f[0x0E];
+
+};
+
+#define SCU_PTSG_SCUVZECR_OFFSET        0x003C
+
+/*
+ * *****************************************************************************
+ * * AFE REGISTERS
+ * ***************************************************************************** */
+#define SCU_AFE_MMR_BASE                  0xE000
+
+/*
+ * AFE 0 is at offset 0x0800
+ * AFE 1 is at offset 0x0900
+ * AFE 2 is at offset 0x0a00
+ * AFE 3 is at offset 0x0b00 */
+struct scu_afe_transceiver {
+	/* 0x0000 AFE_XCVR_CTRL0 */
+	u32 afe_xcvr_control0;
+	/* 0x0004 AFE_XCVR_CTRL1 */
+	u32 afe_xcvr_control1;
+	/* 0x0008 */
+	u32 reserved_0008;
+	/* 0x000c afe_dfx_rx_control0 */
+	u32 afe_dfx_rx_control0;
+	/* 0x0010 AFE_DFX_RX_CTRL1 */
+	u32 afe_dfx_rx_control1;
+	/* 0x0014 */
+	u32 reserved_0014;
+	/* 0x0018 AFE_DFX_RX_STS0 */
+	u32 afe_dfx_rx_status0;
+	/* 0x001c AFE_DFX_RX_STS1 */
+	u32 afe_dfx_rx_status1;
+	/* 0x0020 */
+	u32 reserved_0020;
+	/* 0x0024 AFE_TX_CTRL */
+	u32 afe_tx_control;
+	/* 0x0028 AFE_TX_AMP_CTRL0 */
+	u32 afe_tx_amp_control0;
+	/* 0x002c AFE_TX_AMP_CTRL1 */
+	u32 afe_tx_amp_control1;
+	/* 0x0030 AFE_TX_AMP_CTRL2 */
+	u32 afe_tx_amp_control2;
+	/* 0x0034 AFE_TX_AMP_CTRL3 */
+	u32 afe_tx_amp_control3;
+	/* 0x0038 afe_tx_ssc_control */
+	u32 afe_tx_ssc_control;
+	/* 0x003c */
+	u32 reserved_003c;
+	/* 0x0040 AFE_RX_SSC_CTRL0 */
+	u32 afe_rx_ssc_control0;
+	/* 0x0044 AFE_RX_SSC_CTRL1 */
+	u32 afe_rx_ssc_control1;
+	/* 0x0048 AFE_RX_SSC_CTRL2 */
+	u32 afe_rx_ssc_control2;
+	/* 0x004c AFE_RX_EQ_STS0 */
+	u32 afe_rx_eq_status0;
+	/* 0x0050 AFE_RX_EQ_STS1 */
+	u32 afe_rx_eq_status1;
+	/* 0x0054 AFE_RX_CDR_STS */
+	u32 afe_rx_cdr_status;
+	/* 0x0058 */
+	u32 reserved_0058;
+	/* 0x005c AFE_CHAN_CTRL */
+	u32 afe_channel_control;
+	/* 0x0060-0x006c */
+	u32 reserved_0060_006c[0x04];
+	/* 0x0070 AFE_XCVR_EC_STS0 */
+	u32 afe_xcvr_error_capture_status0;
+	/* 0x0074 AFE_XCVR_EC_STS1 */
+	u32 afe_xcvr_error_capture_status1;
+	/* 0x0078 AFE_XCVR_EC_STS2 */
+	u32 afe_xcvr_error_capture_status2;
+	/* 0x007c afe_xcvr_ec_status3 */
+	u32 afe_xcvr_error_capture_status3;
+	/* 0x0080 AFE_XCVR_EC_STS4 */
+	u32 afe_xcvr_error_capture_status4;
+	/* 0x0084 AFE_XCVR_EC_STS5 */
+	u32 afe_xcvr_error_capture_status5;
+	/* 0x0088-0x00fc */
+	u32 reserved_008c_00fc[0x1e];
+};
+
+/**
+ * struct scu_afe_registers - AFE Regsiters
+ *
+ *
+ */
+/* Uaoa AFE registers */
+struct scu_afe_registers {
+	/* 0Xe000 AFE_BIAS_CTRL */
+	u32 afe_bias_control;
+	u32 reserved_0004;
+	/* 0x0008 AFE_PLL_CTRL0 */
+	u32 afe_pll_control0;
+	/* 0x000c AFE_PLL_CTRL1 */
+	u32 afe_pll_control1;
+	/* 0x0010 AFE_PLL_CTRL2 */
+	u32 afe_pll_control2;
+	/* 0x0014 AFE_CB_STS */
+	u32 afe_common_block_status;
+	/* 0x0018-0x007c */
+	u32 reserved_18_7c[0x1a];
+	/* 0x0080 AFE_PMSN_MCTRL0 */
+	u32 afe_pmsn_master_control0;
+	/* 0x0084 AFE_PMSN_MCTRL1 */
+	u32 afe_pmsn_master_control1;
+	/* 0x0088 AFE_PMSN_MCTRL2 */
+	u32 afe_pmsn_master_control2;
+	/* 0x008C-0x00fc */
+	u32 reserved_008c_00fc[0x1D];
+	/* 0x0100 AFE_DFX_MST_CTRL0 */
+	u32 afe_dfx_master_control0;
+	/* 0x0104 AFE_DFX_MST_CTRL1 */
+	u32 afe_dfx_master_control1;
+	/* 0x0108 AFE_DFX_DCL_CTRL */
+	u32 afe_dfx_dcl_control;
+	/* 0x010c AFE_DFX_DMON_CTRL */
+	u32 afe_dfx_digital_monitor_control;
+	/* 0x0110 AFE_DFX_AMONP_CTRL */
+	u32 afe_dfx_analog_p_monitor_control;
+	/* 0x0114 AFE_DFX_AMONN_CTRL */
+	u32 afe_dfx_analog_n_monitor_control;
+	/* 0x0118 AFE_DFX_NTL_STS */
+	u32 afe_dfx_ntl_status;
+	/* 0x011c AFE_DFX_FIFO_STS0 */
+	u32 afe_dfx_fifo_status0;
+	/* 0x0120 AFE_DFX_FIFO_STS1 */
+	u32 afe_dfx_fifo_status1;
+	/* 0x0124 AFE_DFX_MPAT_CTRL */
+	u32 afe_dfx_master_pattern_control;
+	/* 0x0128 AFE_DFX_P0_CTRL */
+	u32 afe_dfx_p0_control;
+	/* 0x012c-0x01a8 AFE_DFX_P0_DRx */
+	u32 afe_dfx_p0_data[32];
+	/* 0x01ac */
+	u32 reserved_01ac;
+	/* 0x01b0-0x020c AFE_DFX_P0_IRx */
+	u32 afe_dfx_p0_instruction[24];
+	/* 0x0210 */
+	u32 reserved_0210;
+	/* 0x0214 AFE_DFX_P1_CTRL */
+	u32 afe_dfx_p1_control;
+	/* 0x0218-0x245 AFE_DFX_P1_DRx */
+	u32 afe_dfx_p1_data[16];
+	/* 0x0258-0x029c */
+	u32 reserved_0258_029c[0x12];
+	/* 0x02a0-0x02bc AFE_DFX_P1_IRx */
+	u32 afe_dfx_p1_instruction[8];
+	/* 0x02c0-0x2fc */
+	u32 reserved_02c0_02fc[0x10];
+	/* 0x0300 AFE_DFX_TX_PMSN_CTRL */
+	u32 afe_dfx_tx_pmsn_control;
+	/* 0x0304 AFE_DFX_RX_PMSN_CTRL */
+	u32 afe_dfx_rx_pmsn_control;
+	u32 reserved_0308;
+	/* 0x030c AFE_DFX_NOA_CTRL0 */
+	u32 afe_dfx_noa_control0;
+	/* 0x0310 AFE_DFX_NOA_CTRL1 */
+	u32 afe_dfx_noa_control1;
+	/* 0x0314 AFE_DFX_NOA_CTRL2 */
+	u32 afe_dfx_noa_control2;
+	/* 0x0318 AFE_DFX_NOA_CTRL3 */
+	u32 afe_dfx_noa_control3;
+	/* 0x031c AFE_DFX_NOA_CTRL4 */
+	u32 afe_dfx_noa_control4;
+	/* 0x0320 AFE_DFX_NOA_CTRL5 */
+	u32 afe_dfx_noa_control5;
+	/* 0x0324 AFE_DFX_NOA_CTRL6 */
+	u32 afe_dfx_noa_control6;
+	/* 0x0328 AFE_DFX_NOA_CTRL7 */
+	u32 afe_dfx_noa_control7;
+	/* 0x032c-0x07fc */
+	u32 reserved_032c_07fc[0x135];
+
+	/* 0x0800-0x0bfc */
+	struct scu_afe_transceiver scu_afe_xcvr[4];
+
+	/* 0x0c00-0x0ffc */
+	u32 reserved_0c00_0ffc[0x0100];
+};
+
+struct scu_protocol_engine_group_registers {
+	u32 table[0xE0];
+};
+
+
+struct scu_viit_iit {
+	u32 table[256];
+};
+
+/**
+ * Placeholder for the ZONE Partition Table information ZONING will not be
+ *    included in the 1.1 release.
+ *
+ *
+ */
+struct scu_zone_partition_table {
+	u32 table[2048];
+};
+
+/**
+ * Placeholder for the CRAM register since I am not sure if we need to
+ *    read/write to these registers as yet.
+ *
+ *
+ */
+struct scu_completion_ram {
+	u32 ram[128];
+};
+
+/**
+ * Placeholder for the FBRAM registers since I am not sure if we need to
+ *    read/write to these registers as yet.
+ *
+ *
+ */
+struct scu_frame_buffer_ram {
+	u32 ram[128];
+};
+
+#define scu_scratch_ram_SIZE_IN_DWORDS  256
+
+/**
+ * Placeholder for the scratch RAM registers.
+ *
+ *
+ */
+struct scu_scratch_ram {
+	u32 ram[scu_scratch_ram_SIZE_IN_DWORDS];
+};
+
+/**
+ * Placeholder since I am not yet sure what these registers are here for.
+ *
+ *
+ */
+struct noa_protocol_engine_partition {
+	u32 reserved[64];
+};
+
+/**
+ * Placeholder since I am not yet sure what these registers are here for.
+ *
+ *
+ */
+struct noa_hub_partition {
+	u32 reserved[64];
+};
+
+/**
+ * Placeholder since I am not yet sure what these registers are here for.
+ *
+ *
+ */
+struct noa_host_interface_partition {
+	u32 reserved[64];
+};
+
+/**
+ * struct transport_link_layer_pair - The SCU Hardware pairs up the TL
+ *    registers with the LL registers so we must place them adjcent to make the
+ *    array of registers in the PEG.
+ *
+ *
+ */
+struct transport_link_layer_pair {
+	struct scu_transport_layer_registers tl;
+	struct scu_link_layer_registers ll;
+};
+
+/**
+ * struct scu_peg_registers - SCU Protocol Engine Memory mapped register space.
+ *     These registers are unique to each protocol engine group.  There can be
+ *    at most two PEG for a single SCU part.
+ *
+ *
+ */
+struct scu_peg_registers {
+	struct transport_link_layer_pair pe[4];
+	struct scu_port_task_scheduler_group_registers ptsg;
+	struct scu_protocol_engine_group_registers peg;
+	struct scu_sgpio_registers sgpio;
+	u32 reserved_01500_1BFF[0x1C0];
+	struct scu_viit_entry viit[64];
+	struct scu_zone_partition_table zpt0;
+	struct scu_zone_partition_table zpt1;
+};
+
+/**
+ * struct scu_registers - SCU regsiters including both PEG registers if we turn
+ *    on that compile option. All of these registers are in the memory mapped
+ *    space returned from BAR1.
+ *
+ *
+ */
+struct scu_registers {
+	/* 0x0000 - PEG 0 */
+	struct scu_peg_registers peg0;
+
+	/* 0x6000 - SDMA and Miscellaneous */
+	struct scu_sdma_registers sdma;
+	struct scu_completion_ram cram;
+	struct scu_frame_buffer_ram fbram;
+	u32 reserved_6800_69FF[0x80];
+	struct noa_protocol_engine_partition noa_pe;
+	struct noa_hub_partition noa_hub;
+	struct noa_host_interface_partition noa_if;
+	u32 reserved_6d00_7fff[0x4c0];
+
+	/* 0x8000 - PEG 1 */
+	struct scu_peg_registers peg1;
+
+	/* 0xE000 - AFE Registers */
+	struct scu_afe_registers afe;
+
+	/* 0xF000 - reserved */
+	u32 reserved_f000_211fff[0x80c00];
+
+	/* 0x212000 - scratch RAM */
+	struct scu_scratch_ram scratch_ram;
+};
+
+#endif   /* _SCU_REGISTERS_HEADER_ */
diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c
new file mode 100644
index 0000000..b6e6368
--- /dev/null
+++ b/drivers/scsi/isci/remote_device.c
@@ -0,0 +1,1501 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <scsi/sas.h>
+#include "isci.h"
+#include "port.h"
+#include "remote_device.h"
+#include "request.h"
+#include "remote_node_context.h"
+#include "scu_event_codes.h"
+#include "task.h"
+
+/**
+ * isci_remote_device_not_ready() - This function is called by the ihost when
+ *    the remote device is not ready. We mark the isci device as ready (not
+ *    "ready_for_io") and signal the waiting proccess.
+ * @isci_host: This parameter specifies the isci host object.
+ * @isci_device: This parameter specifies the remote device
+ *
+ * sci_lock is held on entrance to this function.
+ */
+static void isci_remote_device_not_ready(struct isci_host *ihost,
+				  struct isci_remote_device *idev, u32 reason)
+{
+	struct isci_request *ireq;
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: isci_device = %p\n", __func__, idev);
+
+	switch (reason) {
+	case SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED:
+		set_bit(IDEV_GONE, &idev->flags);
+		break;
+	case SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED:
+		set_bit(IDEV_IO_NCQERROR, &idev->flags);
+
+		/* Kill all outstanding requests for the device. */
+		list_for_each_entry(ireq, &idev->reqs_in_process, dev_node) {
+
+			dev_dbg(&ihost->pdev->dev,
+				"%s: isci_device = %p request = %p\n",
+				__func__, idev, ireq);
+
+			sci_controller_terminate_request(ihost,
+							  idev,
+							  ireq);
+		}
+		/* Fall through into the default case... */
+	default:
+		clear_bit(IDEV_IO_READY, &idev->flags);
+		break;
+	}
+}
+
+/**
+ * isci_remote_device_ready() - This function is called by the ihost when the
+ *    remote device is ready. We mark the isci device as ready and signal the
+ *    waiting proccess.
+ * @ihost: our valid isci_host
+ * @idev: remote device
+ *
+ */
+static void isci_remote_device_ready(struct isci_host *ihost, struct isci_remote_device *idev)
+{
+	dev_dbg(&ihost->pdev->dev,
+		"%s: idev = %p\n", __func__, idev);
+
+	clear_bit(IDEV_IO_NCQERROR, &idev->flags);
+	set_bit(IDEV_IO_READY, &idev->flags);
+	if (test_and_clear_bit(IDEV_START_PENDING, &idev->flags))
+		wake_up(&ihost->eventq);
+}
+
+/* called once the remote node context is ready to be freed.
+ * The remote device can now report that its stop operation is complete. none
+ */
+static void rnc_destruct_done(void *_dev)
+{
+	struct isci_remote_device *idev = _dev;
+
+	BUG_ON(idev->started_request_count != 0);
+	sci_change_state(&idev->sm, SCI_DEV_STOPPED);
+}
+
+static enum sci_status sci_remote_device_terminate_requests(struct isci_remote_device *idev)
+{
+	struct isci_host *ihost = idev->owning_port->owning_controller;
+	enum sci_status status  = SCI_SUCCESS;
+	u32 i;
+
+	for (i = 0; i < SCI_MAX_IO_REQUESTS; i++) {
+		struct isci_request *ireq = ihost->reqs[i];
+		enum sci_status s;
+
+		if (!test_bit(IREQ_ACTIVE, &ireq->flags) ||
+		    ireq->target_device != idev)
+			continue;
+
+		s = sci_controller_terminate_request(ihost, idev, ireq);
+		if (s != SCI_SUCCESS)
+			status = s;
+	}
+
+	return status;
+}
+
+enum sci_status sci_remote_device_stop(struct isci_remote_device *idev,
+					u32 timeout)
+{
+	struct sci_base_state_machine *sm = &idev->sm;
+	enum sci_remote_device_states state = sm->current_state_id;
+
+	switch (state) {
+	case SCI_DEV_INITIAL:
+	case SCI_DEV_FAILED:
+	case SCI_DEV_FINAL:
+	default:
+		dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+			 __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	case SCI_DEV_STOPPED:
+		return SCI_SUCCESS;
+	case SCI_DEV_STARTING:
+		/* device not started so there had better be no requests */
+		BUG_ON(idev->started_request_count != 0);
+		sci_remote_node_context_destruct(&idev->rnc,
+						      rnc_destruct_done, idev);
+		/* Transition to the stopping state and wait for the
+		 * remote node to complete being posted and invalidated.
+		 */
+		sci_change_state(sm, SCI_DEV_STOPPING);
+		return SCI_SUCCESS;
+	case SCI_DEV_READY:
+	case SCI_STP_DEV_IDLE:
+	case SCI_STP_DEV_CMD:
+	case SCI_STP_DEV_NCQ:
+	case SCI_STP_DEV_NCQ_ERROR:
+	case SCI_STP_DEV_AWAIT_RESET:
+	case SCI_SMP_DEV_IDLE:
+	case SCI_SMP_DEV_CMD:
+		sci_change_state(sm, SCI_DEV_STOPPING);
+		if (idev->started_request_count == 0) {
+			sci_remote_node_context_destruct(&idev->rnc,
+							      rnc_destruct_done, idev);
+			return SCI_SUCCESS;
+		} else
+			return sci_remote_device_terminate_requests(idev);
+		break;
+	case SCI_DEV_STOPPING:
+		/* All requests should have been terminated, but if there is an
+		 * attempt to stop a device already in the stopping state, then
+		 * try again to terminate.
+		 */
+		return sci_remote_device_terminate_requests(idev);
+	case SCI_DEV_RESETTING:
+		sci_change_state(sm, SCI_DEV_STOPPING);
+		return SCI_SUCCESS;
+	}
+}
+
+enum sci_status sci_remote_device_reset(struct isci_remote_device *idev)
+{
+	struct sci_base_state_machine *sm = &idev->sm;
+	enum sci_remote_device_states state = sm->current_state_id;
+
+	switch (state) {
+	case SCI_DEV_INITIAL:
+	case SCI_DEV_STOPPED:
+	case SCI_DEV_STARTING:
+	case SCI_SMP_DEV_IDLE:
+	case SCI_SMP_DEV_CMD:
+	case SCI_DEV_STOPPING:
+	case SCI_DEV_FAILED:
+	case SCI_DEV_RESETTING:
+	case SCI_DEV_FINAL:
+	default:
+		dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+			 __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	case SCI_DEV_READY:
+	case SCI_STP_DEV_IDLE:
+	case SCI_STP_DEV_CMD:
+	case SCI_STP_DEV_NCQ:
+	case SCI_STP_DEV_NCQ_ERROR:
+	case SCI_STP_DEV_AWAIT_RESET:
+		sci_change_state(sm, SCI_DEV_RESETTING);
+		return SCI_SUCCESS;
+	}
+}
+
+enum sci_status sci_remote_device_reset_complete(struct isci_remote_device *idev)
+{
+	struct sci_base_state_machine *sm = &idev->sm;
+	enum sci_remote_device_states state = sm->current_state_id;
+
+	if (state != SCI_DEV_RESETTING) {
+		dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+			 __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	sci_change_state(sm, SCI_DEV_READY);
+	return SCI_SUCCESS;
+}
+
+enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev,
+					       u32 suspend_type)
+{
+	struct sci_base_state_machine *sm = &idev->sm;
+	enum sci_remote_device_states state = sm->current_state_id;
+
+	if (state != SCI_STP_DEV_CMD) {
+		dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+			 __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	return sci_remote_node_context_suspend(&idev->rnc,
+						    suspend_type, NULL, NULL);
+}
+
+enum sci_status sci_remote_device_frame_handler(struct isci_remote_device *idev,
+						     u32 frame_index)
+{
+	struct sci_base_state_machine *sm = &idev->sm;
+	enum sci_remote_device_states state = sm->current_state_id;
+	struct isci_host *ihost = idev->owning_port->owning_controller;
+	enum sci_status status;
+
+	switch (state) {
+	case SCI_DEV_INITIAL:
+	case SCI_DEV_STOPPED:
+	case SCI_DEV_STARTING:
+	case SCI_STP_DEV_IDLE:
+	case SCI_SMP_DEV_IDLE:
+	case SCI_DEV_FINAL:
+	default:
+		dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+			 __func__, state);
+		/* Return the frame back to the controller */
+		sci_controller_release_frame(ihost, frame_index);
+		return SCI_FAILURE_INVALID_STATE;
+	case SCI_DEV_READY:
+	case SCI_STP_DEV_NCQ_ERROR:
+	case SCI_STP_DEV_AWAIT_RESET:
+	case SCI_DEV_STOPPING:
+	case SCI_DEV_FAILED:
+	case SCI_DEV_RESETTING: {
+		struct isci_request *ireq;
+		struct ssp_frame_hdr hdr;
+		void *frame_header;
+		ssize_t word_cnt;
+
+		status = sci_unsolicited_frame_control_get_header(&ihost->uf_control,
+								       frame_index,
+								       &frame_header);
+		if (status != SCI_SUCCESS)
+			return status;
+
+		word_cnt = sizeof(hdr) / sizeof(u32);
+		sci_swab32_cpy(&hdr, frame_header, word_cnt);
+
+		ireq = sci_request_by_tag(ihost, be16_to_cpu(hdr.tag));
+		if (ireq && ireq->target_device == idev) {
+			/* The IO request is now in charge of releasing the frame */
+			status = sci_io_request_frame_handler(ireq, frame_index);
+		} else {
+			/* We could not map this tag to a valid IO
+			 * request Just toss the frame and continue
+			 */
+			sci_controller_release_frame(ihost, frame_index);
+		}
+		break;
+	}
+	case SCI_STP_DEV_NCQ: {
+		struct dev_to_host_fis *hdr;
+
+		status = sci_unsolicited_frame_control_get_header(&ihost->uf_control,
+								       frame_index,
+								       (void **)&hdr);
+		if (status != SCI_SUCCESS)
+			return status;
+
+		if (hdr->fis_type == FIS_SETDEVBITS &&
+		    (hdr->status & ATA_ERR)) {
+			idev->not_ready_reason = SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED;
+
+			/* TODO Check sactive and complete associated IO if any. */
+			sci_change_state(sm, SCI_STP_DEV_NCQ_ERROR);
+		} else if (hdr->fis_type == FIS_REGD2H &&
+			   (hdr->status & ATA_ERR)) {
+			/*
+			 * Some devices return D2H FIS when an NCQ error is detected.
+			 * Treat this like an SDB error FIS ready reason.
+			 */
+			idev->not_ready_reason = SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED;
+			sci_change_state(&idev->sm, SCI_STP_DEV_NCQ_ERROR);
+		} else
+			status = SCI_FAILURE;
+
+		sci_controller_release_frame(ihost, frame_index);
+		break;
+	}
+	case SCI_STP_DEV_CMD:
+	case SCI_SMP_DEV_CMD:
+		/* The device does not process any UF received from the hardware while
+		 * in this state.  All unsolicited frames are forwarded to the io request
+		 * object.
+		 */
+		status = sci_io_request_frame_handler(idev->working_request, frame_index);
+		break;
+	}
+
+	return status;
+}
+
+static bool is_remote_device_ready(struct isci_remote_device *idev)
+{
+
+	struct sci_base_state_machine *sm = &idev->sm;
+	enum sci_remote_device_states state = sm->current_state_id;
+
+	switch (state) {
+	case SCI_DEV_READY:
+	case SCI_STP_DEV_IDLE:
+	case SCI_STP_DEV_CMD:
+	case SCI_STP_DEV_NCQ:
+	case SCI_STP_DEV_NCQ_ERROR:
+	case SCI_STP_DEV_AWAIT_RESET:
+	case SCI_SMP_DEV_IDLE:
+	case SCI_SMP_DEV_CMD:
+		return true;
+	default:
+		return false;
+	}
+}
+
+enum sci_status sci_remote_device_event_handler(struct isci_remote_device *idev,
+						     u32 event_code)
+{
+	struct sci_base_state_machine *sm = &idev->sm;
+	enum sci_remote_device_states state = sm->current_state_id;
+	enum sci_status status;
+
+	switch (scu_get_event_type(event_code)) {
+	case SCU_EVENT_TYPE_RNC_OPS_MISC:
+	case SCU_EVENT_TYPE_RNC_SUSPEND_TX:
+	case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX:
+		status = sci_remote_node_context_event_handler(&idev->rnc, event_code);
+		break;
+	case SCU_EVENT_TYPE_PTX_SCHEDULE_EVENT:
+		if (scu_get_event_code(event_code) == SCU_EVENT_IT_NEXUS_TIMEOUT) {
+			status = SCI_SUCCESS;
+
+			/* Suspend the associated RNC */
+			sci_remote_node_context_suspend(&idev->rnc,
+							      SCI_SOFTWARE_SUSPENSION,
+							      NULL, NULL);
+
+			dev_dbg(scirdev_to_dev(idev),
+				"%s: device: %p event code: %x: %s\n",
+				__func__, idev, event_code,
+				is_remote_device_ready(idev)
+				? "I_T_Nexus_Timeout event"
+				: "I_T_Nexus_Timeout event in wrong state");
+
+			break;
+		}
+	/* Else, fall through and treat as unhandled... */
+	default:
+		dev_dbg(scirdev_to_dev(idev),
+			"%s: device: %p event code: %x: %s\n",
+			__func__, idev, event_code,
+			is_remote_device_ready(idev)
+			? "unexpected event"
+			: "unexpected event in wrong state");
+		status = SCI_FAILURE_INVALID_STATE;
+		break;
+	}
+
+	if (status != SCI_SUCCESS)
+		return status;
+
+	if (state == SCI_STP_DEV_IDLE) {
+
+		/* We pick up suspension events to handle specifically to this
+		 * state. We resume the RNC right away.
+		 */
+		if (scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX ||
+		    scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX)
+			status = sci_remote_node_context_resume(&idev->rnc, NULL, NULL);
+	}
+
+	return status;
+}
+
+static void sci_remote_device_start_request(struct isci_remote_device *idev,
+						 struct isci_request *ireq,
+						 enum sci_status status)
+{
+	struct isci_port *iport = idev->owning_port;
+
+	/* cleanup requests that failed after starting on the port */
+	if (status != SCI_SUCCESS)
+		sci_port_complete_io(iport, idev, ireq);
+	else {
+		kref_get(&idev->kref);
+		idev->started_request_count++;
+	}
+}
+
+enum sci_status sci_remote_device_start_io(struct isci_host *ihost,
+						struct isci_remote_device *idev,
+						struct isci_request *ireq)
+{
+	struct sci_base_state_machine *sm = &idev->sm;
+	enum sci_remote_device_states state = sm->current_state_id;
+	struct isci_port *iport = idev->owning_port;
+	enum sci_status status;
+
+	switch (state) {
+	case SCI_DEV_INITIAL:
+	case SCI_DEV_STOPPED:
+	case SCI_DEV_STARTING:
+	case SCI_STP_DEV_NCQ_ERROR:
+	case SCI_DEV_STOPPING:
+	case SCI_DEV_FAILED:
+	case SCI_DEV_RESETTING:
+	case SCI_DEV_FINAL:
+	default:
+		dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+			 __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	case SCI_DEV_READY:
+		/* attempt to start an io request for this device object. The remote
+		 * device object will issue the start request for the io and if
+		 * successful it will start the request for the port object then
+		 * increment its own request count.
+		 */
+		status = sci_port_start_io(iport, idev, ireq);
+		if (status != SCI_SUCCESS)
+			return status;
+
+		status = sci_remote_node_context_start_io(&idev->rnc, ireq);
+		if (status != SCI_SUCCESS)
+			break;
+
+		status = sci_request_start(ireq);
+		break;
+	case SCI_STP_DEV_IDLE: {
+		/* handle the start io operation for a sata device that is in
+		 * the command idle state. - Evalute the type of IO request to
+		 * be started - If its an NCQ request change to NCQ substate -
+		 * If its any other command change to the CMD substate
+		 *
+		 * If this is a softreset we may want to have a different
+		 * substate.
+		 */
+		enum sci_remote_device_states new_state;
+		struct sas_task *task = isci_request_access_task(ireq);
+
+		status = sci_port_start_io(iport, idev, ireq);
+		if (status != SCI_SUCCESS)
+			return status;
+
+		status = sci_remote_node_context_start_io(&idev->rnc, ireq);
+		if (status != SCI_SUCCESS)
+			break;
+
+		status = sci_request_start(ireq);
+		if (status != SCI_SUCCESS)
+			break;
+
+		if (task->ata_task.use_ncq)
+			new_state = SCI_STP_DEV_NCQ;
+		else {
+			idev->working_request = ireq;
+			new_state = SCI_STP_DEV_CMD;
+		}
+		sci_change_state(sm, new_state);
+		break;
+	}
+	case SCI_STP_DEV_NCQ: {
+		struct sas_task *task = isci_request_access_task(ireq);
+
+		if (task->ata_task.use_ncq) {
+			status = sci_port_start_io(iport, idev, ireq);
+			if (status != SCI_SUCCESS)
+				return status;
+
+			status = sci_remote_node_context_start_io(&idev->rnc, ireq);
+			if (status != SCI_SUCCESS)
+				break;
+
+			status = sci_request_start(ireq);
+		} else
+			return SCI_FAILURE_INVALID_STATE;
+		break;
+	}
+	case SCI_STP_DEV_AWAIT_RESET:
+		return SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED;
+	case SCI_SMP_DEV_IDLE:
+		status = sci_port_start_io(iport, idev, ireq);
+		if (status != SCI_SUCCESS)
+			return status;
+
+		status = sci_remote_node_context_start_io(&idev->rnc, ireq);
+		if (status != SCI_SUCCESS)
+			break;
+
+		status = sci_request_start(ireq);
+		if (status != SCI_SUCCESS)
+			break;
+
+		idev->working_request = ireq;
+		sci_change_state(&idev->sm, SCI_SMP_DEV_CMD);
+		break;
+	case SCI_STP_DEV_CMD:
+	case SCI_SMP_DEV_CMD:
+		/* device is already handling a command it can not accept new commands
+		 * until this one is complete.
+		 */
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	sci_remote_device_start_request(idev, ireq, status);
+	return status;
+}
+
+static enum sci_status common_complete_io(struct isci_port *iport,
+					  struct isci_remote_device *idev,
+					  struct isci_request *ireq)
+{
+	enum sci_status status;
+
+	status = sci_request_complete(ireq);
+	if (status != SCI_SUCCESS)
+		return status;
+
+	status = sci_port_complete_io(iport, idev, ireq);
+	if (status != SCI_SUCCESS)
+		return status;
+
+	sci_remote_device_decrement_request_count(idev);
+	return status;
+}
+
+enum sci_status sci_remote_device_complete_io(struct isci_host *ihost,
+						   struct isci_remote_device *idev,
+						   struct isci_request *ireq)
+{
+	struct sci_base_state_machine *sm = &idev->sm;
+	enum sci_remote_device_states state = sm->current_state_id;
+	struct isci_port *iport = idev->owning_port;
+	enum sci_status status;
+
+	switch (state) {
+	case SCI_DEV_INITIAL:
+	case SCI_DEV_STOPPED:
+	case SCI_DEV_STARTING:
+	case SCI_STP_DEV_IDLE:
+	case SCI_SMP_DEV_IDLE:
+	case SCI_DEV_FAILED:
+	case SCI_DEV_FINAL:
+	default:
+		dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+			 __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	case SCI_DEV_READY:
+	case SCI_STP_DEV_AWAIT_RESET:
+	case SCI_DEV_RESETTING:
+		status = common_complete_io(iport, idev, ireq);
+		break;
+	case SCI_STP_DEV_CMD:
+	case SCI_STP_DEV_NCQ:
+	case SCI_STP_DEV_NCQ_ERROR:
+		status = common_complete_io(iport, idev, ireq);
+		if (status != SCI_SUCCESS)
+			break;
+
+		if (ireq->sci_status == SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
+			/* This request causes hardware error, device needs to be Lun Reset.
+			 * So here we force the state machine to IDLE state so the rest IOs
+			 * can reach RNC state handler, these IOs will be completed by RNC with
+			 * status of "DEVICE_RESET_REQUIRED", instead of "INVALID STATE".
+			 */
+			sci_change_state(sm, SCI_STP_DEV_AWAIT_RESET);
+		} else if (idev->started_request_count == 0)
+			sci_change_state(sm, SCI_STP_DEV_IDLE);
+		break;
+	case SCI_SMP_DEV_CMD:
+		status = common_complete_io(iport, idev, ireq);
+		if (status != SCI_SUCCESS)
+			break;
+		sci_change_state(sm, SCI_SMP_DEV_IDLE);
+		break;
+	case SCI_DEV_STOPPING:
+		status = common_complete_io(iport, idev, ireq);
+		if (status != SCI_SUCCESS)
+			break;
+
+		if (idev->started_request_count == 0)
+			sci_remote_node_context_destruct(&idev->rnc,
+							 rnc_destruct_done,
+							 idev);
+		break;
+	}
+
+	if (status != SCI_SUCCESS)
+		dev_err(scirdev_to_dev(idev),
+			"%s: Port:0x%p Device:0x%p Request:0x%p Status:0x%x "
+			"could not complete\n", __func__, iport,
+			idev, ireq, status);
+	else
+		isci_put_device(idev);
+
+	return status;
+}
+
+static void sci_remote_device_continue_request(void *dev)
+{
+	struct isci_remote_device *idev = dev;
+
+	/* we need to check if this request is still valid to continue. */
+	if (idev->working_request)
+		sci_controller_continue_io(idev->working_request);
+}
+
+enum sci_status sci_remote_device_start_task(struct isci_host *ihost,
+						  struct isci_remote_device *idev,
+						  struct isci_request *ireq)
+{
+	struct sci_base_state_machine *sm = &idev->sm;
+	enum sci_remote_device_states state = sm->current_state_id;
+	struct isci_port *iport = idev->owning_port;
+	enum sci_status status;
+
+	switch (state) {
+	case SCI_DEV_INITIAL:
+	case SCI_DEV_STOPPED:
+	case SCI_DEV_STARTING:
+	case SCI_SMP_DEV_IDLE:
+	case SCI_SMP_DEV_CMD:
+	case SCI_DEV_STOPPING:
+	case SCI_DEV_FAILED:
+	case SCI_DEV_RESETTING:
+	case SCI_DEV_FINAL:
+	default:
+		dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+			 __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	case SCI_STP_DEV_IDLE:
+	case SCI_STP_DEV_CMD:
+	case SCI_STP_DEV_NCQ:
+	case SCI_STP_DEV_NCQ_ERROR:
+	case SCI_STP_DEV_AWAIT_RESET:
+		status = sci_port_start_io(iport, idev, ireq);
+		if (status != SCI_SUCCESS)
+			return status;
+
+		status = sci_remote_node_context_start_task(&idev->rnc, ireq);
+		if (status != SCI_SUCCESS)
+			goto out;
+
+		status = sci_request_start(ireq);
+		if (status != SCI_SUCCESS)
+			goto out;
+
+		/* Note: If the remote device state is not IDLE this will
+		 * replace the request that probably resulted in the task
+		 * management request.
+		 */
+		idev->working_request = ireq;
+		sci_change_state(sm, SCI_STP_DEV_CMD);
+
+		/* The remote node context must cleanup the TCi to NCQ mapping
+		 * table.  The only way to do this correctly is to either write
+		 * to the TLCR register or to invalidate and repost the RNC. In
+		 * either case the remote node context state machine will take
+		 * the correct action when the remote node context is suspended
+		 * and later resumed.
+		 */
+		sci_remote_node_context_suspend(&idev->rnc,
+				SCI_SOFTWARE_SUSPENSION, NULL, NULL);
+		sci_remote_node_context_resume(&idev->rnc,
+				sci_remote_device_continue_request,
+						    idev);
+
+	out:
+		sci_remote_device_start_request(idev, ireq, status);
+		/* We need to let the controller start request handler know that
+		 * it can't post TC yet. We will provide a callback function to
+		 * post TC when RNC gets resumed.
+		 */
+		return SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS;
+	case SCI_DEV_READY:
+		status = sci_port_start_io(iport, idev, ireq);
+		if (status != SCI_SUCCESS)
+			return status;
+
+		status = sci_remote_node_context_start_task(&idev->rnc, ireq);
+		if (status != SCI_SUCCESS)
+			break;
+
+		status = sci_request_start(ireq);
+		break;
+	}
+	sci_remote_device_start_request(idev, ireq, status);
+
+	return status;
+}
+
+void sci_remote_device_post_request(struct isci_remote_device *idev, u32 request)
+{
+	struct isci_port *iport = idev->owning_port;
+	u32 context;
+
+	context = request |
+		  (ISCI_PEG << SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+		  (iport->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
+		  idev->rnc.remote_node_index;
+
+	sci_controller_post_request(iport->owning_controller, context);
+}
+
+/* called once the remote node context has transisitioned to a
+ * ready state.  This is the indication that the remote device object can also
+ * transition to ready.
+ */
+static void remote_device_resume_done(void *_dev)
+{
+	struct isci_remote_device *idev = _dev;
+
+	if (is_remote_device_ready(idev))
+		return;
+
+	/* go 'ready' if we are not already in a ready state */
+	sci_change_state(&idev->sm, SCI_DEV_READY);
+}
+
+static void sci_stp_remote_device_ready_idle_substate_resume_complete_handler(void *_dev)
+{
+	struct isci_remote_device *idev = _dev;
+	struct isci_host *ihost = idev->owning_port->owning_controller;
+
+	/* For NCQ operation we do not issue a isci_remote_device_not_ready().
+	 * As a result, avoid sending the ready notification.
+	 */
+	if (idev->sm.previous_state_id != SCI_STP_DEV_NCQ)
+		isci_remote_device_ready(ihost, idev);
+}
+
+static void sci_remote_device_initial_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+
+	/* Initial state is a transitional state to the stopped state */
+	sci_change_state(&idev->sm, SCI_DEV_STOPPED);
+}
+
+/**
+ * sci_remote_device_destruct() - free remote node context and destruct
+ * @remote_device: This parameter specifies the remote device to be destructed.
+ *
+ * Remote device objects are a limited resource.  As such, they must be
+ * protected.  Thus calls to construct and destruct are mutually exclusive and
+ * non-reentrant. The return value shall indicate if the device was
+ * successfully destructed or if some failure occurred. enum sci_status This value
+ * is returned if the device is successfully destructed.
+ * SCI_FAILURE_INVALID_REMOTE_DEVICE This value is returned if the supplied
+ * device isn't valid (e.g. it's already been destoryed, the handle isn't
+ * valid, etc.).
+ */
+static enum sci_status sci_remote_device_destruct(struct isci_remote_device *idev)
+{
+	struct sci_base_state_machine *sm = &idev->sm;
+	enum sci_remote_device_states state = sm->current_state_id;
+	struct isci_host *ihost;
+
+	if (state != SCI_DEV_STOPPED) {
+		dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+			 __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	ihost = idev->owning_port->owning_controller;
+	sci_controller_free_remote_node_context(ihost, idev,
+						     idev->rnc.remote_node_index);
+	idev->rnc.remote_node_index = SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX;
+	sci_change_state(sm, SCI_DEV_FINAL);
+
+	return SCI_SUCCESS;
+}
+
+/**
+ * isci_remote_device_deconstruct() - This function frees an isci_remote_device.
+ * @ihost: This parameter specifies the isci host object.
+ * @idev: This parameter specifies the remote device to be freed.
+ *
+ */
+static void isci_remote_device_deconstruct(struct isci_host *ihost, struct isci_remote_device *idev)
+{
+	dev_dbg(&ihost->pdev->dev,
+		"%s: isci_device = %p\n", __func__, idev);
+
+	/* There should not be any outstanding io's. All paths to
+	 * here should go through isci_remote_device_nuke_requests.
+	 * If we hit this condition, we will need a way to complete
+	 * io requests in process */
+	BUG_ON(!list_empty(&idev->reqs_in_process));
+
+	sci_remote_device_destruct(idev);
+	list_del_init(&idev->node);
+	isci_put_device(idev);
+}
+
+static void sci_remote_device_stopped_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+	struct isci_host *ihost = idev->owning_port->owning_controller;
+	u32 prev_state;
+
+	/* If we are entering from the stopping state let the SCI User know that
+	 * the stop operation has completed.
+	 */
+	prev_state = idev->sm.previous_state_id;
+	if (prev_state == SCI_DEV_STOPPING)
+		isci_remote_device_deconstruct(ihost, idev);
+
+	sci_controller_remote_device_stopped(ihost, idev);
+}
+
+static void sci_remote_device_starting_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+	struct isci_host *ihost = idev->owning_port->owning_controller;
+
+	isci_remote_device_not_ready(ihost, idev,
+				     SCIC_REMOTE_DEVICE_NOT_READY_START_REQUESTED);
+}
+
+static void sci_remote_device_ready_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+	struct isci_host *ihost = idev->owning_port->owning_controller;
+	struct domain_device *dev = idev->domain_dev;
+
+	if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_SATA)) {
+		sci_change_state(&idev->sm, SCI_STP_DEV_IDLE);
+	} else if (dev_is_expander(dev)) {
+		sci_change_state(&idev->sm, SCI_SMP_DEV_IDLE);
+	} else
+		isci_remote_device_ready(ihost, idev);
+}
+
+static void sci_remote_device_ready_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+	struct domain_device *dev = idev->domain_dev;
+
+	if (dev->dev_type == SAS_END_DEV) {
+		struct isci_host *ihost = idev->owning_port->owning_controller;
+
+		isci_remote_device_not_ready(ihost, idev,
+					     SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED);
+	}
+}
+
+static void sci_remote_device_resetting_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+
+	sci_remote_node_context_suspend(
+		&idev->rnc, SCI_SOFTWARE_SUSPENSION, NULL, NULL);
+}
+
+static void sci_remote_device_resetting_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+
+	sci_remote_node_context_resume(&idev->rnc, NULL, NULL);
+}
+
+static void sci_stp_remote_device_ready_idle_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+
+	idev->working_request = NULL;
+	if (sci_remote_node_context_is_ready(&idev->rnc)) {
+		/*
+		 * Since the RNC is ready, it's alright to finish completion
+		 * processing (e.g. signal the remote device is ready). */
+		sci_stp_remote_device_ready_idle_substate_resume_complete_handler(idev);
+	} else {
+		sci_remote_node_context_resume(&idev->rnc,
+			sci_stp_remote_device_ready_idle_substate_resume_complete_handler,
+			idev);
+	}
+}
+
+static void sci_stp_remote_device_ready_cmd_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+	struct isci_host *ihost = idev->owning_port->owning_controller;
+
+	BUG_ON(idev->working_request == NULL);
+
+	isci_remote_device_not_ready(ihost, idev,
+				     SCIC_REMOTE_DEVICE_NOT_READY_SATA_REQUEST_STARTED);
+}
+
+static void sci_stp_remote_device_ready_ncq_error_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+	struct isci_host *ihost = idev->owning_port->owning_controller;
+
+	if (idev->not_ready_reason == SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED)
+		isci_remote_device_not_ready(ihost, idev,
+					     idev->not_ready_reason);
+}
+
+static void sci_smp_remote_device_ready_idle_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+	struct isci_host *ihost = idev->owning_port->owning_controller;
+
+	isci_remote_device_ready(ihost, idev);
+}
+
+static void sci_smp_remote_device_ready_cmd_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+	struct isci_host *ihost = idev->owning_port->owning_controller;
+
+	BUG_ON(idev->working_request == NULL);
+
+	isci_remote_device_not_ready(ihost, idev,
+				     SCIC_REMOTE_DEVICE_NOT_READY_SMP_REQUEST_STARTED);
+}
+
+static void sci_smp_remote_device_ready_cmd_substate_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm);
+
+	idev->working_request = NULL;
+}
+
+static const struct sci_base_state sci_remote_device_state_table[] = {
+	[SCI_DEV_INITIAL] = {
+		.enter_state = sci_remote_device_initial_state_enter,
+	},
+	[SCI_DEV_STOPPED] = {
+		.enter_state = sci_remote_device_stopped_state_enter,
+	},
+	[SCI_DEV_STARTING] = {
+		.enter_state = sci_remote_device_starting_state_enter,
+	},
+	[SCI_DEV_READY] = {
+		.enter_state = sci_remote_device_ready_state_enter,
+		.exit_state  = sci_remote_device_ready_state_exit
+	},
+	[SCI_STP_DEV_IDLE] = {
+		.enter_state = sci_stp_remote_device_ready_idle_substate_enter,
+	},
+	[SCI_STP_DEV_CMD] = {
+		.enter_state = sci_stp_remote_device_ready_cmd_substate_enter,
+	},
+	[SCI_STP_DEV_NCQ] = { },
+	[SCI_STP_DEV_NCQ_ERROR] = {
+		.enter_state = sci_stp_remote_device_ready_ncq_error_substate_enter,
+	},
+	[SCI_STP_DEV_AWAIT_RESET] = { },
+	[SCI_SMP_DEV_IDLE] = {
+		.enter_state = sci_smp_remote_device_ready_idle_substate_enter,
+	},
+	[SCI_SMP_DEV_CMD] = {
+		.enter_state = sci_smp_remote_device_ready_cmd_substate_enter,
+		.exit_state  = sci_smp_remote_device_ready_cmd_substate_exit,
+	},
+	[SCI_DEV_STOPPING] = { },
+	[SCI_DEV_FAILED] = { },
+	[SCI_DEV_RESETTING] = {
+		.enter_state = sci_remote_device_resetting_state_enter,
+		.exit_state  = sci_remote_device_resetting_state_exit
+	},
+	[SCI_DEV_FINAL] = { },
+};
+
+/**
+ * sci_remote_device_construct() - common construction
+ * @sci_port: SAS/SATA port through which this device is accessed.
+ * @sci_dev: remote device to construct
+ *
+ * This routine just performs benign initialization and does not
+ * allocate the remote_node_context which is left to
+ * sci_remote_device_[de]a_construct().  sci_remote_device_destruct()
+ * frees the remote_node_context(s) for the device.
+ */
+static void sci_remote_device_construct(struct isci_port *iport,
+				  struct isci_remote_device *idev)
+{
+	idev->owning_port = iport;
+	idev->started_request_count = 0;
+
+	sci_init_sm(&idev->sm, sci_remote_device_state_table, SCI_DEV_INITIAL);
+
+	sci_remote_node_context_construct(&idev->rnc,
+					       SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX);
+}
+
+/**
+ * sci_remote_device_da_construct() - construct direct attached device.
+ *
+ * The information (e.g. IAF, Signature FIS, etc.) necessary to build
+ * the device is known to the SCI Core since it is contained in the
+ * sci_phy object.  Remote node context(s) is/are a global resource
+ * allocated by this routine, freed by sci_remote_device_destruct().
+ *
+ * Returns:
+ * SCI_FAILURE_DEVICE_EXISTS - device has already been constructed.
+ * SCI_FAILURE_UNSUPPORTED_PROTOCOL - e.g. sas device attached to
+ * sata-only controller instance.
+ * SCI_FAILURE_INSUFFICIENT_RESOURCES - remote node contexts exhausted.
+ */
+static enum sci_status sci_remote_device_da_construct(struct isci_port *iport,
+						       struct isci_remote_device *idev)
+{
+	enum sci_status status;
+	struct domain_device *dev = idev->domain_dev;
+
+	sci_remote_device_construct(iport, idev);
+
+	/*
+	 * This information is request to determine how many remote node context
+	 * entries will be needed to store the remote node.
+	 */
+	idev->is_direct_attached = true;
+	status = sci_controller_allocate_remote_node_context(iport->owning_controller,
+								  idev,
+								  &idev->rnc.remote_node_index);
+
+	if (status != SCI_SUCCESS)
+		return status;
+
+	if (dev->dev_type == SAS_END_DEV || dev->dev_type == SATA_DEV ||
+	    (dev->tproto & SAS_PROTOCOL_STP) || dev_is_expander(dev))
+		/* pass */;
+	else
+		return SCI_FAILURE_UNSUPPORTED_PROTOCOL;
+
+	idev->connection_rate = sci_port_get_max_allowed_speed(iport);
+
+	/* / @todo Should I assign the port width by reading all of the phys on the port? */
+	idev->device_port_width = 1;
+
+	return SCI_SUCCESS;
+}
+
+/**
+ * sci_remote_device_ea_construct() - construct expander attached device
+ *
+ * Remote node context(s) is/are a global resource allocated by this
+ * routine, freed by sci_remote_device_destruct().
+ *
+ * Returns:
+ * SCI_FAILURE_DEVICE_EXISTS - device has already been constructed.
+ * SCI_FAILURE_UNSUPPORTED_PROTOCOL - e.g. sas device attached to
+ * sata-only controller instance.
+ * SCI_FAILURE_INSUFFICIENT_RESOURCES - remote node contexts exhausted.
+ */
+static enum sci_status sci_remote_device_ea_construct(struct isci_port *iport,
+						       struct isci_remote_device *idev)
+{
+	struct domain_device *dev = idev->domain_dev;
+	enum sci_status status;
+
+	sci_remote_device_construct(iport, idev);
+
+	status = sci_controller_allocate_remote_node_context(iport->owning_controller,
+								  idev,
+								  &idev->rnc.remote_node_index);
+	if (status != SCI_SUCCESS)
+		return status;
+
+	if (dev->dev_type == SAS_END_DEV || dev->dev_type == SATA_DEV ||
+	    (dev->tproto & SAS_PROTOCOL_STP) || dev_is_expander(dev))
+		/* pass */;
+	else
+		return SCI_FAILURE_UNSUPPORTED_PROTOCOL;
+
+	/*
+	 * For SAS-2 the physical link rate is actually a logical link
+	 * rate that incorporates multiplexing.  The SCU doesn't
+	 * incorporate multiplexing and for the purposes of the
+	 * connection the logical link rate is that same as the
+	 * physical.  Furthermore, the SAS-2 and SAS-1.1 fields overlay
+	 * one another, so this code works for both situations. */
+	idev->connection_rate = min_t(u16, sci_port_get_max_allowed_speed(iport),
+					 dev->linkrate);
+
+	/* / @todo Should I assign the port width by reading all of the phys on the port? */
+	idev->device_port_width = 1;
+
+	return SCI_SUCCESS;
+}
+
+/**
+ * sci_remote_device_start() - This method will start the supplied remote
+ *    device.  This method enables normal IO requests to flow through to the
+ *    remote device.
+ * @remote_device: This parameter specifies the device to be started.
+ * @timeout: This parameter specifies the number of milliseconds in which the
+ *    start operation should complete.
+ *
+ * An indication of whether the device was successfully started. SCI_SUCCESS
+ * This value is returned if the device was successfully started.
+ * SCI_FAILURE_INVALID_PHY This value is returned if the user attempts to start
+ * the device when there have been no phys added to it.
+ */
+static enum sci_status sci_remote_device_start(struct isci_remote_device *idev,
+						u32 timeout)
+{
+	struct sci_base_state_machine *sm = &idev->sm;
+	enum sci_remote_device_states state = sm->current_state_id;
+	enum sci_status status;
+
+	if (state != SCI_DEV_STOPPED) {
+		dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %d\n",
+			 __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	status = sci_remote_node_context_resume(&idev->rnc,
+						     remote_device_resume_done,
+						     idev);
+	if (status != SCI_SUCCESS)
+		return status;
+
+	sci_change_state(sm, SCI_DEV_STARTING);
+
+	return SCI_SUCCESS;
+}
+
+static enum sci_status isci_remote_device_construct(struct isci_port *iport,
+						    struct isci_remote_device *idev)
+{
+	struct isci_host *ihost = iport->isci_host;
+	struct domain_device *dev = idev->domain_dev;
+	enum sci_status status;
+
+	if (dev->parent && dev_is_expander(dev->parent))
+		status = sci_remote_device_ea_construct(iport, idev);
+	else
+		status = sci_remote_device_da_construct(iport, idev);
+
+	if (status != SCI_SUCCESS) {
+		dev_dbg(&ihost->pdev->dev, "%s: construct failed: %d\n",
+			__func__, status);
+
+		return status;
+	}
+
+	/* start the device. */
+	status = sci_remote_device_start(idev, ISCI_REMOTE_DEVICE_START_TIMEOUT);
+
+	if (status != SCI_SUCCESS)
+		dev_warn(&ihost->pdev->dev, "remote device start failed: %d\n",
+			 status);
+
+	return status;
+}
+
+void isci_remote_device_nuke_requests(struct isci_host *ihost, struct isci_remote_device *idev)
+{
+	DECLARE_COMPLETION_ONSTACK(aborted_task_completion);
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: idev = %p\n", __func__, idev);
+
+	/* Cleanup all requests pending for this device. */
+	isci_terminate_pending_requests(ihost, idev);
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: idev = %p, done\n", __func__, idev);
+}
+
+/**
+ * This function builds the isci_remote_device when a libsas dev_found message
+ *    is received.
+ * @isci_host: This parameter specifies the isci host object.
+ * @port: This parameter specifies the isci_port conected to this device.
+ *
+ * pointer to new isci_remote_device.
+ */
+static struct isci_remote_device *
+isci_remote_device_alloc(struct isci_host *ihost, struct isci_port *iport)
+{
+	struct isci_remote_device *idev;
+	int i;
+
+	for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) {
+		idev = &ihost->devices[i];
+		if (!test_and_set_bit(IDEV_ALLOCATED, &idev->flags))
+			break;
+	}
+
+	if (i >= SCI_MAX_REMOTE_DEVICES) {
+		dev_warn(&ihost->pdev->dev, "%s: failed\n", __func__);
+		return NULL;
+	}
+
+	if (WARN_ONCE(!list_empty(&idev->reqs_in_process), "found requests in process\n"))
+		return NULL;
+
+	if (WARN_ONCE(!list_empty(&idev->node), "found non-idle remote device\n"))
+		return NULL;
+
+	return idev;
+}
+
+void isci_remote_device_release(struct kref *kref)
+{
+	struct isci_remote_device *idev = container_of(kref, typeof(*idev), kref);
+	struct isci_host *ihost = idev->isci_port->isci_host;
+
+	idev->domain_dev = NULL;
+	idev->isci_port = NULL;
+	clear_bit(IDEV_START_PENDING, &idev->flags);
+	clear_bit(IDEV_STOP_PENDING, &idev->flags);
+	clear_bit(IDEV_IO_READY, &idev->flags);
+	clear_bit(IDEV_GONE, &idev->flags);
+	clear_bit(IDEV_EH, &idev->flags);
+	smp_mb__before_clear_bit();
+	clear_bit(IDEV_ALLOCATED, &idev->flags);
+	wake_up(&ihost->eventq);
+}
+
+/**
+ * isci_remote_device_stop() - This function is called internally to stop the
+ *    remote device.
+ * @isci_host: This parameter specifies the isci host object.
+ * @isci_device: This parameter specifies the remote device.
+ *
+ * The status of the ihost request to stop.
+ */
+enum sci_status isci_remote_device_stop(struct isci_host *ihost, struct isci_remote_device *idev)
+{
+	enum sci_status status;
+	unsigned long flags;
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: isci_device = %p\n", __func__, idev);
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+	idev->domain_dev->lldd_dev = NULL; /* disable new lookups */
+	set_bit(IDEV_GONE, &idev->flags);
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+	/* Kill all outstanding requests. */
+	isci_remote_device_nuke_requests(ihost, idev);
+
+	set_bit(IDEV_STOP_PENDING, &idev->flags);
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+	status = sci_remote_device_stop(idev, 50);
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+	/* Wait for the stop complete callback. */
+	if (WARN_ONCE(status != SCI_SUCCESS, "failed to stop device\n"))
+		/* nothing to wait for */;
+	else
+		wait_for_device_stop(ihost, idev);
+
+	return status;
+}
+
+/**
+ * isci_remote_device_gone() - This function is called by libsas when a domain
+ *    device is removed.
+ * @domain_device: This parameter specifies the libsas domain device.
+ *
+ */
+void isci_remote_device_gone(struct domain_device *dev)
+{
+	struct isci_host *ihost = dev_to_ihost(dev);
+	struct isci_remote_device *idev = dev->lldd_dev;
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: domain_device = %p, isci_device = %p, isci_port = %p\n",
+		__func__, dev, idev, idev->isci_port);
+
+	isci_remote_device_stop(ihost, idev);
+}
+
+
+/**
+ * isci_remote_device_found() - This function is called by libsas when a remote
+ *    device is discovered. A remote device object is created and started. the
+ *    function then sleeps until the sci core device started message is
+ *    received.
+ * @domain_device: This parameter specifies the libsas domain device.
+ *
+ * status, zero indicates success.
+ */
+int isci_remote_device_found(struct domain_device *domain_dev)
+{
+	struct isci_host *isci_host = dev_to_ihost(domain_dev);
+	struct isci_port *isci_port;
+	struct isci_phy *isci_phy;
+	struct asd_sas_port *sas_port;
+	struct asd_sas_phy *sas_phy;
+	struct isci_remote_device *isci_device;
+	enum sci_status status;
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: domain_device = %p\n", __func__, domain_dev);
+
+	wait_for_start(isci_host);
+
+	sas_port = domain_dev->port;
+	sas_phy = list_first_entry(&sas_port->phy_list, struct asd_sas_phy,
+				   port_phy_el);
+	isci_phy = to_iphy(sas_phy);
+	isci_port = isci_phy->isci_port;
+
+	/* we are being called for a device on this port,
+	 * so it has to come up eventually
+	 */
+	wait_for_completion(&isci_port->start_complete);
+
+	if ((isci_stopping == isci_port_get_state(isci_port)) ||
+	    (isci_stopped == isci_port_get_state(isci_port)))
+		return -ENODEV;
+
+	isci_device = isci_remote_device_alloc(isci_host, isci_port);
+	if (!isci_device)
+		return -ENODEV;
+
+	kref_init(&isci_device->kref);
+	INIT_LIST_HEAD(&isci_device->node);
+
+	spin_lock_irq(&isci_host->scic_lock);
+	isci_device->domain_dev = domain_dev;
+	isci_device->isci_port = isci_port;
+	list_add_tail(&isci_device->node, &isci_port->remote_dev_list);
+
+	set_bit(IDEV_START_PENDING, &isci_device->flags);
+	status = isci_remote_device_construct(isci_port, isci_device);
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_device = %p\n",
+		__func__, isci_device);
+
+	if (status == SCI_SUCCESS) {
+		/* device came up, advertise it to the world */
+		domain_dev->lldd_dev = isci_device;
+	} else
+		isci_put_device(isci_device);
+	spin_unlock_irq(&isci_host->scic_lock);
+
+	/* wait for the device ready callback. */
+	wait_for_device_start(isci_host, isci_device);
+
+	return status == SCI_SUCCESS ? 0 : -ENODEV;
+}
+/**
+ * isci_device_is_reset_pending() - This function will check if there is any
+ *    pending reset condition on the device.
+ * @request: This parameter is the isci_device object.
+ *
+ * true if there is a reset pending for the device.
+ */
+bool isci_device_is_reset_pending(
+	struct isci_host *isci_host,
+	struct isci_remote_device *isci_device)
+{
+	struct isci_request *isci_request;
+	struct isci_request *tmp_req;
+	bool reset_is_pending = false;
+	unsigned long flags;
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_device = %p\n", __func__, isci_device);
+
+	spin_lock_irqsave(&isci_host->scic_lock, flags);
+
+	/* Check for reset on all pending requests. */
+	list_for_each_entry_safe(isci_request, tmp_req,
+				 &isci_device->reqs_in_process, dev_node) {
+		dev_dbg(&isci_host->pdev->dev,
+			"%s: isci_device = %p request = %p\n",
+			__func__, isci_device, isci_request);
+
+		if (isci_request->ttype == io_task) {
+			struct sas_task *task = isci_request_access_task(
+				isci_request);
+
+			spin_lock(&task->task_state_lock);
+			if (task->task_state_flags & SAS_TASK_NEED_DEV_RESET)
+				reset_is_pending = true;
+			spin_unlock(&task->task_state_lock);
+		}
+	}
+
+	spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_device = %p reset_is_pending = %d\n",
+		__func__, isci_device, reset_is_pending);
+
+	return reset_is_pending;
+}
+
+/**
+ * isci_device_clear_reset_pending() - This function will clear if any pending
+ *    reset condition flags on the device.
+ * @request: This parameter is the isci_device object.
+ *
+ * true if there is a reset pending for the device.
+ */
+void isci_device_clear_reset_pending(struct isci_host *ihost, struct isci_remote_device *idev)
+{
+	struct isci_request *isci_request;
+	struct isci_request *tmp_req;
+	unsigned long flags = 0;
+
+	dev_dbg(&ihost->pdev->dev, "%s: idev=%p, ihost=%p\n",
+		 __func__, idev, ihost);
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	/* Clear reset pending on all pending requests. */
+	list_for_each_entry_safe(isci_request, tmp_req,
+				 &idev->reqs_in_process, dev_node) {
+		dev_dbg(&ihost->pdev->dev, "%s: idev = %p request = %p\n",
+			 __func__, idev, isci_request);
+
+		if (isci_request->ttype == io_task) {
+
+			unsigned long flags2;
+			struct sas_task *task = isci_request_access_task(
+				isci_request);
+
+			spin_lock_irqsave(&task->task_state_lock, flags2);
+			task->task_state_flags &= ~SAS_TASK_NEED_DEV_RESET;
+			spin_unlock_irqrestore(&task->task_state_lock, flags2);
+		}
+	}
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h
new file mode 100644
index 0000000..57ccfc3
--- /dev/null
+++ b/drivers/scsi/isci/remote_device.h
@@ -0,0 +1,352 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _ISCI_REMOTE_DEVICE_H_
+#define _ISCI_REMOTE_DEVICE_H_
+#include <scsi/libsas.h>
+#include <linux/kref.h>
+#include "scu_remote_node_context.h"
+#include "remote_node_context.h"
+#include "port.h"
+
+enum sci_remote_device_not_ready_reason_code {
+	SCIC_REMOTE_DEVICE_NOT_READY_START_REQUESTED,
+	SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED,
+	SCIC_REMOTE_DEVICE_NOT_READY_SATA_REQUEST_STARTED,
+	SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED,
+	SCIC_REMOTE_DEVICE_NOT_READY_SMP_REQUEST_STARTED,
+	SCIC_REMOTE_DEVICE_NOT_READY_REASON_CODE_MAX
+};
+
+/**
+ * isci_remote_device - isci representation of a sas expander / end point
+ * @device_port_width: hw setting for number of simultaneous connections
+ * @connection_rate: per-taskcontext connection rate for this device
+ * @working_request: SATA requests have no tag we for unaccelerated
+ *                   protocols we need a method to associate unsolicited
+ *                   frames with a pending request
+ */
+struct isci_remote_device {
+	#define IDEV_START_PENDING 0
+	#define IDEV_STOP_PENDING 1
+	#define IDEV_ALLOCATED 2
+	#define IDEV_EH 3
+	#define IDEV_GONE 4
+	#define IDEV_IO_READY 5
+	#define IDEV_IO_NCQERROR 6
+	unsigned long flags;
+	struct kref kref;
+	struct isci_port *isci_port;
+	struct domain_device *domain_dev;
+	struct list_head node;
+	struct list_head reqs_in_process;
+	struct sci_base_state_machine sm;
+	u32 device_port_width;
+	enum sas_linkrate connection_rate;
+	bool is_direct_attached;
+	struct isci_port *owning_port;
+	struct sci_remote_node_context rnc;
+	/* XXX unify with device reference counting and delete */
+	u32 started_request_count;
+	struct isci_request *working_request;
+	u32 not_ready_reason;
+};
+
+#define ISCI_REMOTE_DEVICE_START_TIMEOUT 5000
+
+/* device reference routines must be called under sci_lock */
+static inline struct isci_remote_device *isci_lookup_device(struct domain_device *dev)
+{
+	struct isci_remote_device *idev = dev->lldd_dev;
+
+	if (idev && !test_bit(IDEV_GONE, &idev->flags)) {
+		kref_get(&idev->kref);
+		return idev;
+	}
+
+	return NULL;
+}
+
+void isci_remote_device_release(struct kref *kref);
+static inline void isci_put_device(struct isci_remote_device *idev)
+{
+	if (idev)
+		kref_put(&idev->kref, isci_remote_device_release);
+}
+
+enum sci_status isci_remote_device_stop(struct isci_host *ihost,
+					struct isci_remote_device *idev);
+void isci_remote_device_nuke_requests(struct isci_host *ihost,
+				      struct isci_remote_device *idev);
+void isci_remote_device_gone(struct domain_device *domain_dev);
+int isci_remote_device_found(struct domain_device *domain_dev);
+bool isci_device_is_reset_pending(struct isci_host *ihost,
+				  struct isci_remote_device *idev);
+void isci_device_clear_reset_pending(struct isci_host *ihost,
+				     struct isci_remote_device *idev);
+/**
+ * sci_remote_device_stop() - This method will stop both transmission and
+ *    reception of link activity for the supplied remote device.  This method
+ *    disables normal IO requests from flowing through to the remote device.
+ * @remote_device: This parameter specifies the device to be stopped.
+ * @timeout: This parameter specifies the number of milliseconds in which the
+ *    stop operation should complete.
+ *
+ * An indication of whether the device was successfully stopped. SCI_SUCCESS
+ * This value is returned if the transmission and reception for the device was
+ * successfully stopped.
+ */
+enum sci_status sci_remote_device_stop(
+	struct isci_remote_device *idev,
+	u32 timeout);
+
+/**
+ * sci_remote_device_reset() - This method will reset the device making it
+ *    ready for operation. This method must be called anytime the device is
+ *    reset either through a SMP phy control or a port hard reset request.
+ * @remote_device: This parameter specifies the device to be reset.
+ *
+ * This method does not actually cause the device hardware to be reset. This
+ * method resets the software object so that it will be operational after a
+ * device hardware reset completes. An indication of whether the device reset
+ * was accepted. SCI_SUCCESS This value is returned if the device reset is
+ * started.
+ */
+enum sci_status sci_remote_device_reset(
+	struct isci_remote_device *idev);
+
+/**
+ * sci_remote_device_reset_complete() - This method informs the device object
+ *    that the reset operation is complete and the device can resume operation
+ *    again.
+ * @remote_device: This parameter specifies the device which is to be informed
+ *    of the reset complete operation.
+ *
+ * An indication that the device is resuming operation. SCI_SUCCESS the device
+ * is resuming operation.
+ */
+enum sci_status sci_remote_device_reset_complete(
+	struct isci_remote_device *idev);
+
+/**
+ * enum sci_remote_device_states - This enumeration depicts all the states
+ *    for the common remote device state machine.
+ *
+ *
+ */
+enum sci_remote_device_states {
+	/**
+	 * Simply the initial state for the base remote device state machine.
+	 */
+	SCI_DEV_INITIAL,
+
+	/**
+	 * This state indicates that the remote device has successfully been
+	 * stopped.  In this state no new IO operations are permitted.
+	 * This state is entered from the INITIAL state.
+	 * This state is entered from the STOPPING state.
+	 */
+	SCI_DEV_STOPPED,
+
+	/**
+	 * This state indicates the the remote device is in the process of
+	 * becoming ready (i.e. starting).  In this state no new IO operations
+	 * are permitted.
+	 * This state is entered from the STOPPED state.
+	 */
+	SCI_DEV_STARTING,
+
+	/**
+	 * This state indicates the remote device is now ready.  Thus, the user
+	 * is able to perform IO operations on the remote device.
+	 * This state is entered from the STARTING state.
+	 */
+	SCI_DEV_READY,
+
+	/**
+	 * This is the idle substate for the stp remote device.  When there are no
+	 * active IO for the device it is is in this state.
+	 */
+	SCI_STP_DEV_IDLE,
+
+	/**
+	 * This is the command state for for the STP remote device.  This state is
+	 * entered when the device is processing a non-NCQ command.  The device object
+	 * will fail any new start IO requests until this command is complete.
+	 */
+	SCI_STP_DEV_CMD,
+
+	/**
+	 * This is the NCQ state for the STP remote device.  This state is entered
+	 * when the device is processing an NCQ reuqest.  It will remain in this state
+	 * so long as there is one or more NCQ requests being processed.
+	 */
+	SCI_STP_DEV_NCQ,
+
+	/**
+	 * This is the NCQ error state for the STP remote device.  This state is
+	 * entered when an SDB error FIS is received by the device object while in the
+	 * NCQ state.  The device object will only accept a READ LOG command while in
+	 * this state.
+	 */
+	SCI_STP_DEV_NCQ_ERROR,
+
+	/**
+	 * This is the READY substate indicates the device is waiting for the RESET task
+	 * coming to be recovered from certain hardware specific error.
+	 */
+	SCI_STP_DEV_AWAIT_RESET,
+
+	/**
+	 * This is the ready operational substate for the remote device.  This is the
+	 * normal operational state for a remote device.
+	 */
+	SCI_SMP_DEV_IDLE,
+
+	/**
+	 * This is the suspended state for the remote device.  This is the state that
+	 * the device is placed in when a RNC suspend is received by the SCU hardware.
+	 */
+	SCI_SMP_DEV_CMD,
+
+	/**
+	 * This state indicates that the remote device is in the process of
+	 * stopping.  In this state no new IO operations are permitted, but
+	 * existing IO operations are allowed to complete.
+	 * This state is entered from the READY state.
+	 * This state is entered from the FAILED state.
+	 */
+	SCI_DEV_STOPPING,
+
+	/**
+	 * This state indicates that the remote device has failed.
+	 * In this state no new IO operations are permitted.
+	 * This state is entered from the INITIALIZING state.
+	 * This state is entered from the READY state.
+	 */
+	SCI_DEV_FAILED,
+
+	/**
+	 * This state indicates the device is being reset.
+	 * In this state no new IO operations are permitted.
+	 * This state is entered from the READY state.
+	 */
+	SCI_DEV_RESETTING,
+
+	/**
+	 * Simply the final state for the base remote device state machine.
+	 */
+	SCI_DEV_FINAL,
+};
+
+static inline struct isci_remote_device *rnc_to_dev(struct sci_remote_node_context *rnc)
+{
+	struct isci_remote_device *idev;
+
+	idev = container_of(rnc, typeof(*idev), rnc);
+
+	return idev;
+}
+
+static inline bool dev_is_expander(struct domain_device *dev)
+{
+	return dev->dev_type == EDGE_DEV || dev->dev_type == FANOUT_DEV;
+}
+
+static inline void sci_remote_device_decrement_request_count(struct isci_remote_device *idev)
+{
+	/* XXX delete this voodoo when converting to the top-level device
+	 * reference count
+	 */
+	if (WARN_ONCE(idev->started_request_count == 0,
+		      "%s: tried to decrement started_request_count past 0!?",
+			__func__))
+		/* pass */;
+	else
+		idev->started_request_count--;
+}
+
+enum sci_status sci_remote_device_frame_handler(
+	struct isci_remote_device *idev,
+	u32 frame_index);
+
+enum sci_status sci_remote_device_event_handler(
+	struct isci_remote_device *idev,
+	u32 event_code);
+
+enum sci_status sci_remote_device_start_io(
+	struct isci_host *ihost,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+enum sci_status sci_remote_device_start_task(
+	struct isci_host *ihost,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+enum sci_status sci_remote_device_complete_io(
+	struct isci_host *ihost,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+enum sci_status sci_remote_device_suspend(
+	struct isci_remote_device *idev,
+	u32 suspend_type);
+
+void sci_remote_device_post_request(
+	struct isci_remote_device *idev,
+	u32 request);
+
+#endif /* !defined(_ISCI_REMOTE_DEVICE_H_) */
diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c
new file mode 100644
index 0000000..748e833
--- /dev/null
+++ b/drivers/scsi/isci/remote_node_context.c
@@ -0,0 +1,627 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "host.h"
+#include "isci.h"
+#include "remote_device.h"
+#include "remote_node_context.h"
+#include "scu_event_codes.h"
+#include "scu_task_context.h"
+
+
+/**
+ *
+ * @sci_rnc: The RNC for which the is posted request is being made.
+ *
+ * This method will return true if the RNC is not in the initial state.  In all
+ * other states the RNC is considered active and this will return true. The
+ * destroy request of the state machine drives the RNC back to the initial
+ * state.  If the state machine changes then this routine will also have to be
+ * changed. bool true if the state machine is not in the initial state false if
+ * the state machine is in the initial state
+ */
+
+/**
+ *
+ * @sci_rnc: The state of the remote node context object to check.
+ *
+ * This method will return true if the remote node context is in a READY state
+ * otherwise it will return false bool true if the remote node context is in
+ * the ready state. false if the remote node context is not in the ready state.
+ */
+bool sci_remote_node_context_is_ready(
+	struct sci_remote_node_context *sci_rnc)
+{
+	u32 current_state = sci_rnc->sm.current_state_id;
+
+	if (current_state == SCI_RNC_READY) {
+		return true;
+	}
+
+	return false;
+}
+
+static union scu_remote_node_context *sci_rnc_by_id(struct isci_host *ihost, u16 id)
+{
+	if (id < ihost->remote_node_entries &&
+	    ihost->device_table[id])
+		return &ihost->remote_node_context_table[id];
+
+	return NULL;
+}
+
+static void sci_remote_node_context_construct_buffer(struct sci_remote_node_context *sci_rnc)
+{
+	struct isci_remote_device *idev = rnc_to_dev(sci_rnc);
+	struct domain_device *dev = idev->domain_dev;
+	int rni = sci_rnc->remote_node_index;
+	union scu_remote_node_context *rnc;
+	struct isci_host *ihost;
+	__le64 sas_addr;
+
+	ihost = idev->owning_port->owning_controller;
+	rnc = sci_rnc_by_id(ihost, rni);
+
+	memset(rnc, 0, sizeof(union scu_remote_node_context)
+		* sci_remote_device_node_count(idev));
+
+	rnc->ssp.remote_node_index = rni;
+	rnc->ssp.remote_node_port_width = idev->device_port_width;
+	rnc->ssp.logical_port_index = idev->owning_port->physical_port_index;
+
+	/* sas address is __be64, context ram format is __le64 */
+	sas_addr = cpu_to_le64(SAS_ADDR(dev->sas_addr));
+	rnc->ssp.remote_sas_address_hi = upper_32_bits(sas_addr);
+	rnc->ssp.remote_sas_address_lo = lower_32_bits(sas_addr);
+
+	rnc->ssp.nexus_loss_timer_enable = true;
+	rnc->ssp.check_bit               = false;
+	rnc->ssp.is_valid                = false;
+	rnc->ssp.is_remote_node_context  = true;
+	rnc->ssp.function_number         = 0;
+
+	rnc->ssp.arbitration_wait_time = 0;
+
+	if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) {
+		rnc->ssp.connection_occupancy_timeout =
+			ihost->user_parameters.stp_max_occupancy_timeout;
+		rnc->ssp.connection_inactivity_timeout =
+			ihost->user_parameters.stp_inactivity_timeout;
+	} else {
+		rnc->ssp.connection_occupancy_timeout  =
+			ihost->user_parameters.ssp_max_occupancy_timeout;
+		rnc->ssp.connection_inactivity_timeout =
+			ihost->user_parameters.ssp_inactivity_timeout;
+	}
+
+	rnc->ssp.initial_arbitration_wait_time = 0;
+
+	/* Open Address Frame Parameters */
+	rnc->ssp.oaf_connection_rate = idev->connection_rate;
+	rnc->ssp.oaf_features = 0;
+	rnc->ssp.oaf_source_zone_group = 0;
+	rnc->ssp.oaf_more_compatibility_features = 0;
+}
+
+/**
+ *
+ * @sci_rnc:
+ * @callback:
+ * @callback_parameter:
+ *
+ * This method will setup the remote node context object so it will transition
+ * to its ready state.  If the remote node context is already setup to
+ * transition to its final state then this function does nothing. none
+ */
+static void sci_remote_node_context_setup_to_resume(
+	struct sci_remote_node_context *sci_rnc,
+	scics_sds_remote_node_context_callback callback,
+	void *callback_parameter)
+{
+	if (sci_rnc->destination_state != SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL) {
+		sci_rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY;
+		sci_rnc->user_callback     = callback;
+		sci_rnc->user_cookie       = callback_parameter;
+	}
+}
+
+static void sci_remote_node_context_setup_to_destory(
+	struct sci_remote_node_context *sci_rnc,
+	scics_sds_remote_node_context_callback callback,
+	void *callback_parameter)
+{
+	sci_rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL;
+	sci_rnc->user_callback     = callback;
+	sci_rnc->user_cookie       = callback_parameter;
+}
+
+/**
+ *
+ *
+ * This method just calls the user callback function and then resets the
+ * callback.
+ */
+static void sci_remote_node_context_notify_user(
+	struct sci_remote_node_context *rnc)
+{
+	if (rnc->user_callback != NULL) {
+		(*rnc->user_callback)(rnc->user_cookie);
+
+		rnc->user_callback = NULL;
+		rnc->user_cookie = NULL;
+	}
+}
+
+static void sci_remote_node_context_continue_state_transitions(struct sci_remote_node_context *rnc)
+{
+	if (rnc->destination_state == SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY)
+		sci_remote_node_context_resume(rnc, rnc->user_callback,
+						    rnc->user_cookie);
+}
+
+static void sci_remote_node_context_validate_context_buffer(struct sci_remote_node_context *sci_rnc)
+{
+	union scu_remote_node_context *rnc_buffer;
+	struct isci_remote_device *idev = rnc_to_dev(sci_rnc);
+	struct domain_device *dev = idev->domain_dev;
+	struct isci_host *ihost = idev->owning_port->owning_controller;
+
+	rnc_buffer = sci_rnc_by_id(ihost, sci_rnc->remote_node_index);
+
+	rnc_buffer->ssp.is_valid = true;
+
+	if (!idev->is_direct_attached &&
+	    (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP))) {
+		sci_remote_device_post_request(idev, SCU_CONTEXT_COMMAND_POST_RNC_96);
+	} else {
+		sci_remote_device_post_request(idev, SCU_CONTEXT_COMMAND_POST_RNC_32);
+
+		if (idev->is_direct_attached)
+			sci_port_setup_transports(idev->owning_port,
+						  sci_rnc->remote_node_index);
+	}
+}
+
+static void sci_remote_node_context_invalidate_context_buffer(struct sci_remote_node_context *sci_rnc)
+{
+	union scu_remote_node_context *rnc_buffer;
+	struct isci_remote_device *idev = rnc_to_dev(sci_rnc);
+	struct isci_host *ihost = idev->owning_port->owning_controller;
+
+	rnc_buffer = sci_rnc_by_id(ihost, sci_rnc->remote_node_index);
+
+	rnc_buffer->ssp.is_valid = false;
+
+	sci_remote_device_post_request(rnc_to_dev(sci_rnc),
+				       SCU_CONTEXT_COMMAND_POST_RNC_INVALIDATE);
+}
+
+static void sci_remote_node_context_initial_state_enter(struct sci_base_state_machine *sm)
+{
+	struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm);
+
+	/* Check to see if we have gotten back to the initial state because
+	 * someone requested to destroy the remote node context object.
+	 */
+	if (sm->previous_state_id == SCI_RNC_INVALIDATING) {
+		rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED;
+		sci_remote_node_context_notify_user(rnc);
+	}
+}
+
+static void sci_remote_node_context_posting_state_enter(struct sci_base_state_machine *sm)
+{
+	struct sci_remote_node_context *sci_rnc = container_of(sm, typeof(*sci_rnc), sm);
+
+	sci_remote_node_context_validate_context_buffer(sci_rnc);
+}
+
+static void sci_remote_node_context_invalidating_state_enter(struct sci_base_state_machine *sm)
+{
+	struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm);
+
+	sci_remote_node_context_invalidate_context_buffer(rnc);
+}
+
+static void sci_remote_node_context_resuming_state_enter(struct sci_base_state_machine *sm)
+{
+	struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm);
+	struct isci_remote_device *idev;
+	struct domain_device *dev;
+
+	idev = rnc_to_dev(rnc);
+	dev = idev->domain_dev;
+
+	/*
+	 * For direct attached SATA devices we need to clear the TLCR
+	 * NCQ to TCi tag mapping on the phy and in cases where we
+	 * resume because of a target reset we also need to update
+	 * the STPTLDARNI register with the RNi of the device
+	 */
+	if ((dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) &&
+	    idev->is_direct_attached)
+		sci_port_setup_transports(idev->owning_port,
+					       rnc->remote_node_index);
+
+	sci_remote_device_post_request(idev, SCU_CONTEXT_COMMAND_POST_RNC_RESUME);
+}
+
+static void sci_remote_node_context_ready_state_enter(struct sci_base_state_machine *sm)
+{
+	struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm);
+
+	rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED;
+
+	if (rnc->user_callback)
+		sci_remote_node_context_notify_user(rnc);
+}
+
+static void sci_remote_node_context_tx_suspended_state_enter(struct sci_base_state_machine *sm)
+{
+	struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm);
+
+	sci_remote_node_context_continue_state_transitions(rnc);
+}
+
+static void sci_remote_node_context_tx_rx_suspended_state_enter(struct sci_base_state_machine *sm)
+{
+	struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm);
+
+	sci_remote_node_context_continue_state_transitions(rnc);
+}
+
+static const struct sci_base_state sci_remote_node_context_state_table[] = {
+	[SCI_RNC_INITIAL] = {
+		.enter_state = sci_remote_node_context_initial_state_enter,
+	},
+	[SCI_RNC_POSTING] = {
+		.enter_state = sci_remote_node_context_posting_state_enter,
+	},
+	[SCI_RNC_INVALIDATING] = {
+		.enter_state = sci_remote_node_context_invalidating_state_enter,
+	},
+	[SCI_RNC_RESUMING] = {
+		.enter_state = sci_remote_node_context_resuming_state_enter,
+	},
+	[SCI_RNC_READY] = {
+		.enter_state = sci_remote_node_context_ready_state_enter,
+	},
+	[SCI_RNC_TX_SUSPENDED] = {
+		.enter_state = sci_remote_node_context_tx_suspended_state_enter,
+	},
+	[SCI_RNC_TX_RX_SUSPENDED] = {
+		.enter_state = sci_remote_node_context_tx_rx_suspended_state_enter,
+	},
+	[SCI_RNC_AWAIT_SUSPENSION] = { },
+};
+
+void sci_remote_node_context_construct(struct sci_remote_node_context *rnc,
+					    u16 remote_node_index)
+{
+	memset(rnc, 0, sizeof(struct sci_remote_node_context));
+
+	rnc->remote_node_index = remote_node_index;
+	rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED;
+
+	sci_init_sm(&rnc->sm, sci_remote_node_context_state_table, SCI_RNC_INITIAL);
+}
+
+enum sci_status sci_remote_node_context_event_handler(struct sci_remote_node_context *sci_rnc,
+							   u32 event_code)
+{
+	enum scis_sds_remote_node_context_states state;
+
+	state = sci_rnc->sm.current_state_id;
+	switch (state) {
+	case SCI_RNC_POSTING:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_POST_RNC_COMPLETE:
+			sci_change_state(&sci_rnc->sm, SCI_RNC_READY);
+			break;
+		default:
+			goto out;
+		}
+		break;
+	case SCI_RNC_INVALIDATING:
+		if (scu_get_event_code(event_code) == SCU_EVENT_POST_RNC_INVALIDATE_COMPLETE) {
+			if (sci_rnc->destination_state == SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL)
+				state = SCI_RNC_INITIAL;
+			else
+				state = SCI_RNC_POSTING;
+			sci_change_state(&sci_rnc->sm, state);
+		} else {
+			switch (scu_get_event_type(event_code)) {
+			case SCU_EVENT_TYPE_RNC_SUSPEND_TX:
+			case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX:
+				/* We really dont care if the hardware is going to suspend
+				 * the device since it's being invalidated anyway */
+				dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)),
+					"%s: SCIC Remote Node Context 0x%p was "
+					"suspeneded by hardware while being "
+					"invalidated.\n", __func__, sci_rnc);
+				break;
+			default:
+				goto out;
+			}
+		}
+		break;
+	case SCI_RNC_RESUMING:
+		if (scu_get_event_code(event_code) == SCU_EVENT_POST_RCN_RELEASE) {
+			sci_change_state(&sci_rnc->sm, SCI_RNC_READY);
+		} else {
+			switch (scu_get_event_type(event_code)) {
+			case SCU_EVENT_TYPE_RNC_SUSPEND_TX:
+			case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX:
+				/* We really dont care if the hardware is going to suspend
+				 * the device since it's being resumed anyway */
+				dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)),
+					"%s: SCIC Remote Node Context 0x%p was "
+					"suspeneded by hardware while being resumed.\n",
+					__func__, sci_rnc);
+				break;
+			default:
+				goto out;
+			}
+		}
+		break;
+	case SCI_RNC_READY:
+		switch (scu_get_event_type(event_code)) {
+		case SCU_EVENT_TL_RNC_SUSPEND_TX:
+			sci_change_state(&sci_rnc->sm, SCI_RNC_TX_SUSPENDED);
+			sci_rnc->suspension_code = scu_get_event_specifier(event_code);
+			break;
+		case SCU_EVENT_TL_RNC_SUSPEND_TX_RX:
+			sci_change_state(&sci_rnc->sm, SCI_RNC_TX_RX_SUSPENDED);
+			sci_rnc->suspension_code = scu_get_event_specifier(event_code);
+			break;
+		default:
+			goto out;
+		}
+		break;
+	case SCI_RNC_AWAIT_SUSPENSION:
+		switch (scu_get_event_type(event_code)) {
+		case SCU_EVENT_TL_RNC_SUSPEND_TX:
+			sci_change_state(&sci_rnc->sm, SCI_RNC_TX_SUSPENDED);
+			sci_rnc->suspension_code = scu_get_event_specifier(event_code);
+			break;
+		case SCU_EVENT_TL_RNC_SUSPEND_TX_RX:
+			sci_change_state(&sci_rnc->sm, SCI_RNC_TX_RX_SUSPENDED);
+			sci_rnc->suspension_code = scu_get_event_specifier(event_code);
+			break;
+		default:
+			goto out;
+		}
+		break;
+	default:
+		dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
+			 "%s: invalid state %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+	return SCI_SUCCESS;
+
+ out:
+	dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
+		 "%s: code: %#x state: %d\n", __func__, event_code, state);
+	return SCI_FAILURE;
+
+}
+
+enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context *sci_rnc,
+						      scics_sds_remote_node_context_callback cb_fn,
+						      void *cb_p)
+{
+	enum scis_sds_remote_node_context_states state;
+
+	state = sci_rnc->sm.current_state_id;
+	switch (state) {
+	case SCI_RNC_INVALIDATING:
+		sci_remote_node_context_setup_to_destory(sci_rnc, cb_fn, cb_p);
+		return SCI_SUCCESS;
+	case SCI_RNC_POSTING:
+	case SCI_RNC_RESUMING:
+	case SCI_RNC_READY:
+	case SCI_RNC_TX_SUSPENDED:
+	case SCI_RNC_TX_RX_SUSPENDED:
+	case SCI_RNC_AWAIT_SUSPENSION:
+		sci_remote_node_context_setup_to_destory(sci_rnc, cb_fn, cb_p);
+		sci_change_state(&sci_rnc->sm, SCI_RNC_INVALIDATING);
+		return SCI_SUCCESS;
+	case SCI_RNC_INITIAL:
+		dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
+			 "%s: invalid state %d\n", __func__, state);
+		/* We have decided that the destruct request on the remote node context
+		 * can not fail since it is either in the initial/destroyed state or is
+		 * can be destroyed.
+		 */
+		return SCI_SUCCESS;
+	default:
+		dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
+			 "%s: invalid state %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+enum sci_status sci_remote_node_context_suspend(struct sci_remote_node_context *sci_rnc,
+						     u32 suspend_type,
+						     scics_sds_remote_node_context_callback cb_fn,
+						     void *cb_p)
+{
+	enum scis_sds_remote_node_context_states state;
+
+	state = sci_rnc->sm.current_state_id;
+	if (state != SCI_RNC_READY) {
+		dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
+			 "%s: invalid state %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	sci_rnc->user_callback   = cb_fn;
+	sci_rnc->user_cookie     = cb_p;
+	sci_rnc->suspension_code = suspend_type;
+
+	if (suspend_type == SCI_SOFTWARE_SUSPENSION) {
+		sci_remote_device_post_request(rnc_to_dev(sci_rnc),
+						    SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX);
+	}
+
+	sci_change_state(&sci_rnc->sm, SCI_RNC_AWAIT_SUSPENSION);
+	return SCI_SUCCESS;
+}
+
+enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *sci_rnc,
+						    scics_sds_remote_node_context_callback cb_fn,
+						    void *cb_p)
+{
+	enum scis_sds_remote_node_context_states state;
+
+	state = sci_rnc->sm.current_state_id;
+	switch (state) {
+	case SCI_RNC_INITIAL:
+		if (sci_rnc->remote_node_index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX)
+			return SCI_FAILURE_INVALID_STATE;
+
+		sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p);
+		sci_remote_node_context_construct_buffer(sci_rnc);
+		sci_change_state(&sci_rnc->sm, SCI_RNC_POSTING);
+		return SCI_SUCCESS;
+	case SCI_RNC_POSTING:
+	case SCI_RNC_INVALIDATING:
+	case SCI_RNC_RESUMING:
+		if (sci_rnc->destination_state != SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY)
+			return SCI_FAILURE_INVALID_STATE;
+
+		sci_rnc->user_callback = cb_fn;
+		sci_rnc->user_cookie   = cb_p;
+		return SCI_SUCCESS;
+	case SCI_RNC_TX_SUSPENDED: {
+		struct isci_remote_device *idev = rnc_to_dev(sci_rnc);
+		struct domain_device *dev = idev->domain_dev;
+
+		sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p);
+
+		/* TODO: consider adding a resume action of NONE, INVALIDATE, WRITE_TLCR */
+		if (dev->dev_type == SAS_END_DEV || dev_is_expander(dev))
+			sci_change_state(&sci_rnc->sm, SCI_RNC_RESUMING);
+		else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) {
+			if (idev->is_direct_attached) {
+				/* @todo Fix this since I am being silly in writing to the STPTLDARNI register. */
+				sci_change_state(&sci_rnc->sm, SCI_RNC_RESUMING);
+			} else {
+				sci_change_state(&sci_rnc->sm, SCI_RNC_INVALIDATING);
+			}
+		} else
+			return SCI_FAILURE;
+		return SCI_SUCCESS;
+	}
+	case SCI_RNC_TX_RX_SUSPENDED:
+		sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p);
+		sci_change_state(&sci_rnc->sm, SCI_RNC_RESUMING);
+		return SCI_FAILURE_INVALID_STATE;
+	case SCI_RNC_AWAIT_SUSPENSION:
+		sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
+			 "%s: invalid state %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+enum sci_status sci_remote_node_context_start_io(struct sci_remote_node_context *sci_rnc,
+							     struct isci_request *ireq)
+{
+	enum scis_sds_remote_node_context_states state;
+
+	state = sci_rnc->sm.current_state_id;
+
+	switch (state) {
+	case SCI_RNC_READY:
+		return SCI_SUCCESS;
+	case SCI_RNC_TX_SUSPENDED:
+	case SCI_RNC_TX_RX_SUSPENDED:
+	case SCI_RNC_AWAIT_SUSPENSION:
+		dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
+			 "%s: invalid state %d\n", __func__, state);
+		return SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED;
+	default:
+		break;
+	}
+	dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)),
+		"%s: requested to start IO while still resuming, %d\n",
+		__func__, state);
+	return SCI_FAILURE_INVALID_STATE;
+}
+
+enum sci_status sci_remote_node_context_start_task(struct sci_remote_node_context *sci_rnc,
+							struct isci_request *ireq)
+{
+	enum scis_sds_remote_node_context_states state;
+
+	state = sci_rnc->sm.current_state_id;
+	switch (state) {
+	case SCI_RNC_RESUMING:
+	case SCI_RNC_READY:
+	case SCI_RNC_AWAIT_SUSPENSION:
+		return SCI_SUCCESS;
+	case SCI_RNC_TX_SUSPENDED:
+	case SCI_RNC_TX_RX_SUSPENDED:
+		sci_remote_node_context_resume(sci_rnc, NULL, NULL);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)),
+			 "%s: invalid state %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
diff --git a/drivers/scsi/isci/remote_node_context.h b/drivers/scsi/isci/remote_node_context.h
new file mode 100644
index 0000000..41580ad
--- /dev/null
+++ b/drivers/scsi/isci/remote_node_context.h
@@ -0,0 +1,224 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _SCIC_SDS_REMOTE_NODE_CONTEXT_H_
+#define _SCIC_SDS_REMOTE_NODE_CONTEXT_H_
+
+/**
+ * This file contains the structures, constants, and prototypes associated with
+ *    the remote node context in the silicon.  It exists to model and manage
+ *    the remote node context in the silicon.
+ *
+ *
+ */
+
+#include "isci.h"
+
+/**
+ *
+ *
+ * This constant represents an invalid remote device id, it is used to program
+ * the STPDARNI register so the driver knows when it has received a SIGNATURE
+ * FIS from the SCU.
+ */
+#define SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX    0x0FFF
+
+#define SCU_HARDWARE_SUSPENSION  (0)
+#define SCI_SOFTWARE_SUSPENSION  (1)
+
+struct isci_request;
+struct isci_remote_device;
+struct sci_remote_node_context;
+
+typedef void (*scics_sds_remote_node_context_callback)(void *);
+
+/**
+ * This is the enumeration of the remote node context states.
+ */
+enum scis_sds_remote_node_context_states {
+	/**
+	 * This state is the initial state for a remote node context.  On a resume
+	 * request the remote node context will transition to the posting state.
+	 */
+	SCI_RNC_INITIAL,
+
+	/**
+	 * This is a transition state that posts the RNi to the hardware. Once the RNC
+	 * is posted the remote node context will be made ready.
+	 */
+	SCI_RNC_POSTING,
+
+	/**
+	 * This is a transition state that will post an RNC invalidate to the
+	 * hardware.  Once the invalidate is complete the remote node context will
+	 * transition to the posting state.
+	 */
+	SCI_RNC_INVALIDATING,
+
+	/**
+	 * This is a transition state that will post an RNC resume to the hardare.
+	 * Once the event notification of resume complete is received the remote node
+	 * context will transition to the ready state.
+	 */
+	SCI_RNC_RESUMING,
+
+	/**
+	 * This is the state that the remote node context must be in to accept io
+	 * request operations.
+	 */
+	SCI_RNC_READY,
+
+	/**
+	 * This is the state that the remote node context transitions to when it gets
+	 * a TX suspend notification from the hardware.
+	 */
+	SCI_RNC_TX_SUSPENDED,
+
+	/**
+	 * This is the state that the remote node context transitions to when it gets
+	 * a TX RX suspend notification from the hardware.
+	 */
+	SCI_RNC_TX_RX_SUSPENDED,
+
+	/**
+	 * This state is a wait state for the remote node context that waits for a
+	 * suspend notification from the hardware.  This state is entered when either
+	 * there is a request to supend the remote node context or when there is a TC
+	 * completion where the remote node will be suspended by the hardware.
+	 */
+	SCI_RNC_AWAIT_SUSPENSION
+};
+
+/**
+ *
+ *
+ * This enumeration is used to define the end destination state for the remote
+ * node context.
+ */
+enum sci_remote_node_context_destination_state {
+	SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED,
+	SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY,
+	SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL
+};
+
+/**
+ * struct sci_remote_node_context - This structure contains the data
+ *    associated with the remote node context object.  The remote node context
+ *    (RNC) object models the the remote device information necessary to manage
+ *    the silicon RNC.
+ */
+struct sci_remote_node_context {
+	/**
+	 * This field indicates the remote node index (RNI) associated with
+	 * this RNC.
+	 */
+	u16 remote_node_index;
+
+	/**
+	 * This field is the recored suspension code or the reason for the remote node
+	 * context suspension.
+	 */
+	u32 suspension_code;
+
+	/**
+	 * This field is true if the remote node context is resuming from its current
+	 * state.  This can cause an automatic resume on receiving a suspension
+	 * notification.
+	 */
+	enum sci_remote_node_context_destination_state destination_state;
+
+	/**
+	 * This field contains the callback function that the user requested to be
+	 * called when the requested state transition is complete.
+	 */
+	scics_sds_remote_node_context_callback user_callback;
+
+	/**
+	 * This field contains the parameter that is called when the user requested
+	 * state transition is completed.
+	 */
+	void *user_cookie;
+
+	/**
+	 * This field contains the data for the object's state machine.
+	 */
+	struct sci_base_state_machine sm;
+};
+
+void sci_remote_node_context_construct(struct sci_remote_node_context *rnc,
+					    u16 remote_node_index);
+
+
+bool sci_remote_node_context_is_ready(
+	struct sci_remote_node_context *sci_rnc);
+
+enum sci_status sci_remote_node_context_event_handler(struct sci_remote_node_context *sci_rnc,
+							   u32 event_code);
+enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context *sci_rnc,
+						      scics_sds_remote_node_context_callback callback,
+						      void *callback_parameter);
+enum sci_status sci_remote_node_context_suspend(struct sci_remote_node_context *sci_rnc,
+						     u32 suspend_type,
+						     scics_sds_remote_node_context_callback cb_fn,
+						     void *cb_p);
+enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *sci_rnc,
+						    scics_sds_remote_node_context_callback cb_fn,
+						    void *cb_p);
+enum sci_status sci_remote_node_context_start_task(struct sci_remote_node_context *sci_rnc,
+							struct isci_request *ireq);
+enum sci_status sci_remote_node_context_start_io(struct sci_remote_node_context *sci_rnc,
+						      struct isci_request *ireq);
+
+#endif  /* _SCIC_SDS_REMOTE_NODE_CONTEXT_H_ */
diff --git a/drivers/scsi/isci/remote_node_table.c b/drivers/scsi/isci/remote_node_table.c
new file mode 100644
index 0000000..301b314
--- /dev/null
+++ b/drivers/scsi/isci/remote_node_table.c
@@ -0,0 +1,598 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * This file contains the implementation of the SCIC_SDS_REMOTE_NODE_TABLE
+ *    public, protected, and private methods.
+ *
+ *
+ */
+#include "remote_node_table.h"
+#include "remote_node_context.h"
+
+/**
+ *
+ * @remote_node_table: This is the remote node index table from which the
+ *    selection will be made.
+ * @group_table_index: This is the index to the group table from which to
+ *    search for an available selection.
+ *
+ * This routine will find the bit position in absolute bit terms of the next 32
+ * + bit position.  If there are available bits in the first u32 then it is
+ * just bit position. u32 This is the absolute bit position for an available
+ * group.
+ */
+static u32 sci_remote_node_table_get_group_index(
+	struct sci_remote_node_table *remote_node_table,
+	u32 group_table_index)
+{
+	u32 dword_index;
+	u32 *group_table;
+	u32 bit_index;
+
+	group_table = remote_node_table->remote_node_groups[group_table_index];
+
+	for (dword_index = 0; dword_index < remote_node_table->group_array_size; dword_index++) {
+		if (group_table[dword_index] != 0) {
+			for (bit_index = 0; bit_index < 32; bit_index++) {
+				if ((group_table[dword_index] & (1 << bit_index)) != 0) {
+					return (dword_index * 32) + bit_index;
+				}
+			}
+		}
+	}
+
+	return SCIC_SDS_REMOTE_NODE_TABLE_INVALID_INDEX;
+}
+
+/**
+ *
+ * @out]: remote_node_table This the remote node table in which to clear the
+ *    selector.
+ * @set_index: This is the remote node selector in which the change will be
+ *    made.
+ * @group_index: This is the bit index in the table to be modified.
+ *
+ * This method will clear the group index entry in the specified group index
+ * table. none
+ */
+static void sci_remote_node_table_clear_group_index(
+	struct sci_remote_node_table *remote_node_table,
+	u32 group_table_index,
+	u32 group_index)
+{
+	u32 dword_index;
+	u32 bit_index;
+	u32 *group_table;
+
+	BUG_ON(group_table_index >= SCU_STP_REMOTE_NODE_COUNT);
+	BUG_ON(group_index >= (u32)(remote_node_table->group_array_size * 32));
+
+	dword_index = group_index / 32;
+	bit_index   = group_index % 32;
+	group_table = remote_node_table->remote_node_groups[group_table_index];
+
+	group_table[dword_index] = group_table[dword_index] & ~(1 << bit_index);
+}
+
+/**
+ *
+ * @out]: remote_node_table This the remote node table in which to set the
+ *    selector.
+ * @group_table_index: This is the remote node selector in which the change
+ *    will be made.
+ * @group_index: This is the bit position in the table to be modified.
+ *
+ * This method will set the group index bit entry in the specified gropu index
+ * table. none
+ */
+static void sci_remote_node_table_set_group_index(
+	struct sci_remote_node_table *remote_node_table,
+	u32 group_table_index,
+	u32 group_index)
+{
+	u32 dword_index;
+	u32 bit_index;
+	u32 *group_table;
+
+	BUG_ON(group_table_index >= SCU_STP_REMOTE_NODE_COUNT);
+	BUG_ON(group_index >= (u32)(remote_node_table->group_array_size * 32));
+
+	dword_index = group_index / 32;
+	bit_index   = group_index % 32;
+	group_table = remote_node_table->remote_node_groups[group_table_index];
+
+	group_table[dword_index] = group_table[dword_index] | (1 << bit_index);
+}
+
+/**
+ *
+ * @out]: remote_node_table This is the remote node table in which to modify
+ *    the remote node availability.
+ * @remote_node_index: This is the remote node index that is being returned to
+ *    the table.
+ *
+ * This method will set the remote to available in the remote node allocation
+ * table. none
+ */
+static void sci_remote_node_table_set_node_index(
+	struct sci_remote_node_table *remote_node_table,
+	u32 remote_node_index)
+{
+	u32 dword_location;
+	u32 dword_remainder;
+	u32 slot_normalized;
+	u32 slot_position;
+
+	BUG_ON(
+		(remote_node_table->available_nodes_array_size * SCIC_SDS_REMOTE_NODE_SETS_PER_DWORD)
+		<= (remote_node_index / SCU_STP_REMOTE_NODE_COUNT)
+		);
+
+	dword_location  = remote_node_index / SCIC_SDS_REMOTE_NODES_PER_DWORD;
+	dword_remainder = remote_node_index % SCIC_SDS_REMOTE_NODES_PER_DWORD;
+	slot_normalized = (dword_remainder / SCU_STP_REMOTE_NODE_COUNT) * sizeof(u32);
+	slot_position   = remote_node_index % SCU_STP_REMOTE_NODE_COUNT;
+
+	remote_node_table->available_remote_nodes[dword_location] |=
+		1 << (slot_normalized + slot_position);
+}
+
+/**
+ *
+ * @out]: remote_node_table This is the remote node table from which to clear
+ *    the available remote node bit.
+ * @remote_node_index: This is the remote node index which is to be cleared
+ *    from the table.
+ *
+ * This method clears the remote node index from the table of available remote
+ * nodes. none
+ */
+static void sci_remote_node_table_clear_node_index(
+	struct sci_remote_node_table *remote_node_table,
+	u32 remote_node_index)
+{
+	u32 dword_location;
+	u32 dword_remainder;
+	u32 slot_position;
+	u32 slot_normalized;
+
+	BUG_ON(
+		(remote_node_table->available_nodes_array_size * SCIC_SDS_REMOTE_NODE_SETS_PER_DWORD)
+		<= (remote_node_index / SCU_STP_REMOTE_NODE_COUNT)
+		);
+
+	dword_location  = remote_node_index / SCIC_SDS_REMOTE_NODES_PER_DWORD;
+	dword_remainder = remote_node_index % SCIC_SDS_REMOTE_NODES_PER_DWORD;
+	slot_normalized = (dword_remainder / SCU_STP_REMOTE_NODE_COUNT) * sizeof(u32);
+	slot_position   = remote_node_index % SCU_STP_REMOTE_NODE_COUNT;
+
+	remote_node_table->available_remote_nodes[dword_location] &=
+		~(1 << (slot_normalized + slot_position));
+}
+
+/**
+ *
+ * @out]: remote_node_table The remote node table from which the slot will be
+ *    cleared.
+ * @group_index: The index for the slot that is to be cleared.
+ *
+ * This method clears the entire table slot at the specified slot index. none
+ */
+static void sci_remote_node_table_clear_group(
+	struct sci_remote_node_table *remote_node_table,
+	u32 group_index)
+{
+	u32 dword_location;
+	u32 dword_remainder;
+	u32 dword_value;
+
+	BUG_ON(
+		(remote_node_table->available_nodes_array_size * SCIC_SDS_REMOTE_NODE_SETS_PER_DWORD)
+		<= (group_index / SCU_STP_REMOTE_NODE_COUNT)
+		);
+
+	dword_location  = group_index / SCIC_SDS_REMOTE_NODE_SETS_PER_DWORD;
+	dword_remainder = group_index % SCIC_SDS_REMOTE_NODE_SETS_PER_DWORD;
+
+	dword_value = remote_node_table->available_remote_nodes[dword_location];
+	dword_value &= ~(SCIC_SDS_REMOTE_NODE_TABLE_FULL_SLOT_VALUE << (dword_remainder * 4));
+	remote_node_table->available_remote_nodes[dword_location] = dword_value;
+}
+
+/**
+ *
+ * @remote_node_table:
+ *
+ * THis method sets an entire remote node group in the remote node table.
+ */
+static void sci_remote_node_table_set_group(
+	struct sci_remote_node_table *remote_node_table,
+	u32 group_index)
+{
+	u32 dword_location;
+	u32 dword_remainder;
+	u32 dword_value;
+
+	BUG_ON(
+		(remote_node_table->available_nodes_array_size * SCIC_SDS_REMOTE_NODE_SETS_PER_DWORD)
+		<= (group_index / SCU_STP_REMOTE_NODE_COUNT)
+		);
+
+	dword_location  = group_index / SCIC_SDS_REMOTE_NODE_SETS_PER_DWORD;
+	dword_remainder = group_index % SCIC_SDS_REMOTE_NODE_SETS_PER_DWORD;
+
+	dword_value = remote_node_table->available_remote_nodes[dword_location];
+	dword_value |= (SCIC_SDS_REMOTE_NODE_TABLE_FULL_SLOT_VALUE << (dword_remainder * 4));
+	remote_node_table->available_remote_nodes[dword_location] = dword_value;
+}
+
+/**
+ *
+ * @remote_node_table: This is the remote node table that for which the group
+ *    value is to be returned.
+ * @group_index: This is the group index to use to find the group value.
+ *
+ * This method will return the group value for the specified group index. The
+ * bit values at the specified remote node group index.
+ */
+static u8 sci_remote_node_table_get_group_value(
+	struct sci_remote_node_table *remote_node_table,
+	u32 group_index)
+{
+	u32 dword_location;
+	u32 dword_remainder;
+	u32 dword_value;
+
+	dword_location  = group_index / SCIC_SDS_REMOTE_NODE_SETS_PER_DWORD;
+	dword_remainder = group_index % SCIC_SDS_REMOTE_NODE_SETS_PER_DWORD;
+
+	dword_value = remote_node_table->available_remote_nodes[dword_location];
+	dword_value &= (SCIC_SDS_REMOTE_NODE_TABLE_FULL_SLOT_VALUE << (dword_remainder * 4));
+	dword_value = dword_value >> (dword_remainder * 4);
+
+	return (u8)dword_value;
+}
+
+/**
+ *
+ * @out]: remote_node_table The remote that which is to be initialized.
+ * @remote_node_entries: The number of entries to put in the table.
+ *
+ * This method will initialize the remote node table for use. none
+ */
+void sci_remote_node_table_initialize(
+	struct sci_remote_node_table *remote_node_table,
+	u32 remote_node_entries)
+{
+	u32 index;
+
+	/*
+	 * Initialize the raw data we could improve the speed by only initializing
+	 * those entries that we are actually going to be used */
+	memset(
+		remote_node_table->available_remote_nodes,
+		0x00,
+		sizeof(remote_node_table->available_remote_nodes)
+		);
+
+	memset(
+		remote_node_table->remote_node_groups,
+		0x00,
+		sizeof(remote_node_table->remote_node_groups)
+		);
+
+	/* Initialize the available remote node sets */
+	remote_node_table->available_nodes_array_size = (u16)
+							(remote_node_entries / SCIC_SDS_REMOTE_NODES_PER_DWORD)
+							+ ((remote_node_entries % SCIC_SDS_REMOTE_NODES_PER_DWORD) != 0);
+
+
+	/* Initialize each full DWORD to a FULL SET of remote nodes */
+	for (index = 0; index < remote_node_entries; index++) {
+		sci_remote_node_table_set_node_index(remote_node_table, index);
+	}
+
+	remote_node_table->group_array_size = (u16)
+					      (remote_node_entries / (SCU_STP_REMOTE_NODE_COUNT * 32))
+					      + ((remote_node_entries % (SCU_STP_REMOTE_NODE_COUNT * 32)) != 0);
+
+	for (index = 0; index < (remote_node_entries / SCU_STP_REMOTE_NODE_COUNT); index++) {
+		/*
+		 * These are all guaranteed to be full slot values so fill them in the
+		 * available sets of 3 remote nodes */
+		sci_remote_node_table_set_group_index(remote_node_table, 2, index);
+	}
+
+	/* Now fill in any remainders that we may find */
+	if ((remote_node_entries % SCU_STP_REMOTE_NODE_COUNT) == 2) {
+		sci_remote_node_table_set_group_index(remote_node_table, 1, index);
+	} else if ((remote_node_entries % SCU_STP_REMOTE_NODE_COUNT) == 1) {
+		sci_remote_node_table_set_group_index(remote_node_table, 0, index);
+	}
+}
+
+/**
+ *
+ * @out]: remote_node_table The remote node table from which to allocate a
+ *    remote node.
+ * @table_index: The group index that is to be used for the search.
+ *
+ * This method will allocate a single RNi from the remote node table.  The
+ * table index will determine from which remote node group table to search.
+ * This search may fail and another group node table can be specified.  The
+ * function is designed to allow a serach of the available single remote node
+ * group up to the triple remote node group.  If an entry is found in the
+ * specified table the remote node is removed and the remote node groups are
+ * updated. The RNi value or an invalid remote node context if an RNi can not
+ * be found.
+ */
+static u16 sci_remote_node_table_allocate_single_remote_node(
+	struct sci_remote_node_table *remote_node_table,
+	u32 group_table_index)
+{
+	u8 index;
+	u8 group_value;
+	u32 group_index;
+	u16 remote_node_index = SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX;
+
+	group_index = sci_remote_node_table_get_group_index(
+		remote_node_table, group_table_index);
+
+	/* We could not find an available slot in the table selector 0 */
+	if (group_index != SCIC_SDS_REMOTE_NODE_TABLE_INVALID_INDEX) {
+		group_value = sci_remote_node_table_get_group_value(
+			remote_node_table, group_index);
+
+		for (index = 0; index < SCU_STP_REMOTE_NODE_COUNT; index++) {
+			if (((1 << index) & group_value) != 0) {
+				/* We have selected a bit now clear it */
+				remote_node_index = (u16)(group_index * SCU_STP_REMOTE_NODE_COUNT
+							  + index);
+
+				sci_remote_node_table_clear_group_index(
+					remote_node_table, group_table_index, group_index
+					);
+
+				sci_remote_node_table_clear_node_index(
+					remote_node_table, remote_node_index
+					);
+
+				if (group_table_index > 0) {
+					sci_remote_node_table_set_group_index(
+						remote_node_table, group_table_index - 1, group_index
+						);
+				}
+
+				break;
+			}
+		}
+	}
+
+	return remote_node_index;
+}
+
+/**
+ *
+ * @remote_node_table: This is the remote node table from which to allocate the
+ *    remote node entries.
+ * @group_table_index: THis is the group table index which must equal two (2)
+ *    for this operation.
+ *
+ * This method will allocate three consecutive remote node context entries. If
+ * there are no remaining triple entries the function will return a failure.
+ * The remote node index that represents three consecutive remote node entries
+ * or an invalid remote node context if none can be found.
+ */
+static u16 sci_remote_node_table_allocate_triple_remote_node(
+	struct sci_remote_node_table *remote_node_table,
+	u32 group_table_index)
+{
+	u32 group_index;
+	u16 remote_node_index = SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX;
+
+	group_index = sci_remote_node_table_get_group_index(
+		remote_node_table, group_table_index);
+
+	if (group_index != SCIC_SDS_REMOTE_NODE_TABLE_INVALID_INDEX) {
+		remote_node_index = (u16)group_index * SCU_STP_REMOTE_NODE_COUNT;
+
+		sci_remote_node_table_clear_group_index(
+			remote_node_table, group_table_index, group_index
+			);
+
+		sci_remote_node_table_clear_group(
+			remote_node_table, group_index
+			);
+	}
+
+	return remote_node_index;
+}
+
+/**
+ *
+ * @remote_node_table: This is the remote node table from which the remote node
+ *    allocation is to take place.
+ * @remote_node_count: This is ther remote node count which is one of
+ *    SCU_SSP_REMOTE_NODE_COUNT(1) or SCU_STP_REMOTE_NODE_COUNT(3).
+ *
+ * This method will allocate a remote node that mataches the remote node count
+ * specified by the caller.  Valid values for remote node count is
+ * SCU_SSP_REMOTE_NODE_COUNT(1) or SCU_STP_REMOTE_NODE_COUNT(3). u16 This is
+ * the remote node index that is returned or an invalid remote node context.
+ */
+u16 sci_remote_node_table_allocate_remote_node(
+	struct sci_remote_node_table *remote_node_table,
+	u32 remote_node_count)
+{
+	u16 remote_node_index = SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX;
+
+	if (remote_node_count == SCU_SSP_REMOTE_NODE_COUNT) {
+		remote_node_index =
+			sci_remote_node_table_allocate_single_remote_node(
+				remote_node_table, 0);
+
+		if (remote_node_index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) {
+			remote_node_index =
+				sci_remote_node_table_allocate_single_remote_node(
+					remote_node_table, 1);
+		}
+
+		if (remote_node_index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) {
+			remote_node_index =
+				sci_remote_node_table_allocate_single_remote_node(
+					remote_node_table, 2);
+		}
+	} else if (remote_node_count == SCU_STP_REMOTE_NODE_COUNT) {
+		remote_node_index =
+			sci_remote_node_table_allocate_triple_remote_node(
+				remote_node_table, 2);
+	}
+
+	return remote_node_index;
+}
+
+/**
+ *
+ * @remote_node_table:
+ *
+ * This method will free a single remote node index back to the remote node
+ * table.  This routine will update the remote node groups
+ */
+static void sci_remote_node_table_release_single_remote_node(
+	struct sci_remote_node_table *remote_node_table,
+	u16 remote_node_index)
+{
+	u32 group_index;
+	u8 group_value;
+
+	group_index = remote_node_index / SCU_STP_REMOTE_NODE_COUNT;
+
+	group_value = sci_remote_node_table_get_group_value(remote_node_table, group_index);
+
+	/*
+	 * Assert that we are not trying to add an entry to a slot that is already
+	 * full. */
+	BUG_ON(group_value == SCIC_SDS_REMOTE_NODE_TABLE_FULL_SLOT_VALUE);
+
+	if (group_value == 0x00) {
+		/*
+		 * There are no entries in this slot so it must be added to the single
+		 * slot table. */
+		sci_remote_node_table_set_group_index(remote_node_table, 0, group_index);
+	} else if ((group_value & (group_value - 1)) == 0) {
+		/*
+		 * There is only one entry in this slot so it must be moved from the
+		 * single slot table to the dual slot table */
+		sci_remote_node_table_clear_group_index(remote_node_table, 0, group_index);
+		sci_remote_node_table_set_group_index(remote_node_table, 1, group_index);
+	} else {
+		/*
+		 * There are two entries in the slot so it must be moved from the dual
+		 * slot table to the tripple slot table. */
+		sci_remote_node_table_clear_group_index(remote_node_table, 1, group_index);
+		sci_remote_node_table_set_group_index(remote_node_table, 2, group_index);
+	}
+
+	sci_remote_node_table_set_node_index(remote_node_table, remote_node_index);
+}
+
+/**
+ *
+ * @remote_node_table: This is the remote node table to which the remote node
+ *    index is to be freed.
+ *
+ * This method will release a group of three consecutive remote nodes back to
+ * the free remote nodes.
+ */
+static void sci_remote_node_table_release_triple_remote_node(
+	struct sci_remote_node_table *remote_node_table,
+	u16 remote_node_index)
+{
+	u32 group_index;
+
+	group_index = remote_node_index / SCU_STP_REMOTE_NODE_COUNT;
+
+	sci_remote_node_table_set_group_index(
+		remote_node_table, 2, group_index
+		);
+
+	sci_remote_node_table_set_group(remote_node_table, group_index);
+}
+
+/**
+ *
+ * @remote_node_table: The remote node table to which the remote node index is
+ *    to be freed.
+ * @remote_node_count: This is the count of consecutive remote nodes that are
+ *    to be freed.
+ *
+ * This method will release the remote node index back into the remote node
+ * table free pool.
+ */
+void sci_remote_node_table_release_remote_node_index(
+	struct sci_remote_node_table *remote_node_table,
+	u32 remote_node_count,
+	u16 remote_node_index)
+{
+	if (remote_node_count == SCU_SSP_REMOTE_NODE_COUNT) {
+		sci_remote_node_table_release_single_remote_node(
+			remote_node_table, remote_node_index);
+	} else if (remote_node_count == SCU_STP_REMOTE_NODE_COUNT) {
+		sci_remote_node_table_release_triple_remote_node(
+			remote_node_table, remote_node_index);
+	}
+}
+
diff --git a/drivers/scsi/isci/remote_node_table.h b/drivers/scsi/isci/remote_node_table.h
new file mode 100644
index 0000000..721ab98
--- /dev/null
+++ b/drivers/scsi/isci/remote_node_table.h
@@ -0,0 +1,188 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _SCIC_SDS_REMOTE_NODE_TABLE_H_
+#define _SCIC_SDS_REMOTE_NODE_TABLE_H_
+
+#include "isci.h"
+
+/**
+ *
+ *
+ * Remote node sets are sets of remote node index in the remtoe node table The
+ * SCU hardware requires that STP remote node entries take three consecutive
+ * remote node index so the table is arranged in sets of three. The bits are
+ * used as 0111 0111 to make a byte and the bits define the set of three remote
+ * nodes to use as a sequence.
+ */
+#define SCIC_SDS_REMOTE_NODE_SETS_PER_BYTE 2
+
+/**
+ *
+ *
+ * Since the remote node table is organized as DWORDS take the remote node sets
+ * in bytes and represent them in DWORDs. The lowest ordered bits are the ones
+ * used in case full DWORD is not being used. i.e. 0000 0000 0000 0000 0111
+ * 0111 0111 0111 // if only a single WORD is in use in the DWORD.
+ */
+#define SCIC_SDS_REMOTE_NODE_SETS_PER_DWORD \
+	(sizeof(u32) * SCIC_SDS_REMOTE_NODE_SETS_PER_BYTE)
+/**
+ *
+ *
+ * This is a count of the numeber of remote nodes that can be represented in a
+ * byte
+ */
+#define SCIC_SDS_REMOTE_NODES_PER_BYTE	\
+	(SCU_STP_REMOTE_NODE_COUNT * SCIC_SDS_REMOTE_NODE_SETS_PER_BYTE)
+
+/**
+ *
+ *
+ * This is a count of the number of remote nodes that can be represented in a
+ * DWROD
+ */
+#define SCIC_SDS_REMOTE_NODES_PER_DWORD	\
+	(sizeof(u32) * SCIC_SDS_REMOTE_NODES_PER_BYTE)
+
+/**
+ *
+ *
+ * This is the number of bits in a remote node group
+ */
+#define SCIC_SDS_REMOTE_NODES_BITS_PER_GROUP   4
+
+#define SCIC_SDS_REMOTE_NODE_TABLE_INVALID_INDEX      (0xFFFFFFFF)
+#define SCIC_SDS_REMOTE_NODE_TABLE_FULL_SLOT_VALUE    (0x07)
+#define SCIC_SDS_REMOTE_NODE_TABLE_EMPTY_SLOT_VALUE   (0x00)
+
+/**
+ *
+ *
+ * Expander attached sata remote node count
+ */
+#define SCU_STP_REMOTE_NODE_COUNT        3
+
+/**
+ *
+ *
+ * Expander or direct attached ssp remote node count
+ */
+#define SCU_SSP_REMOTE_NODE_COUNT        1
+
+/**
+ *
+ *
+ * Direct attached STP remote node count
+ */
+#define SCU_SATA_REMOTE_NODE_COUNT       1
+
+/**
+ * struct sci_remote_node_table -
+ *
+ *
+ */
+struct sci_remote_node_table {
+	/**
+	 * This field contains the array size in dwords
+	 */
+	u16 available_nodes_array_size;
+
+	/**
+	 * This field contains the array size of the
+	 */
+	u16 group_array_size;
+
+	/**
+	 * This field is the array of available remote node entries in bits.
+	 * Because of the way STP remote node data is allocated on the SCU hardware
+	 * the remote nodes must occupy three consecutive remote node context
+	 * entries.  For ease of allocation and de-allocation we have broken the
+	 * sets of three into a single nibble.  When the STP RNi is allocated all
+	 * of the bits in the nibble are cleared.  This math results in a table size
+	 * of MAX_REMOTE_NODES / CONSECUTIVE RNi ENTRIES for STP / 2 entries per byte.
+	 */
+	u32 available_remote_nodes[
+		(SCI_MAX_REMOTE_DEVICES / SCIC_SDS_REMOTE_NODES_PER_DWORD)
+		+ ((SCI_MAX_REMOTE_DEVICES % SCIC_SDS_REMOTE_NODES_PER_DWORD) != 0)];
+
+	/**
+	 * This field is the nibble selector for the above table.  There are three
+	 * possible selectors each for fast lookup when trying to find one, two or
+	 * three remote node entries.
+	 */
+	u32 remote_node_groups[
+		SCU_STP_REMOTE_NODE_COUNT][
+		(SCI_MAX_REMOTE_DEVICES / (32 * SCU_STP_REMOTE_NODE_COUNT))
+		+ ((SCI_MAX_REMOTE_DEVICES % (32 * SCU_STP_REMOTE_NODE_COUNT)) != 0)];
+
+};
+
+/* --------------------------------------------------------------------------- */
+
+void sci_remote_node_table_initialize(
+	struct sci_remote_node_table *remote_node_table,
+	u32 remote_node_entries);
+
+u16 sci_remote_node_table_allocate_remote_node(
+	struct sci_remote_node_table *remote_node_table,
+	u32 remote_node_count);
+
+void sci_remote_node_table_release_remote_node_index(
+	struct sci_remote_node_table *remote_node_table,
+	u32 remote_node_count,
+	u16 remote_node_index);
+
+#endif /* _SCIC_SDS_REMOTE_NODE_TABLE_H_ */
diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c
new file mode 100644
index 0000000..a46e07a
--- /dev/null
+++ b/drivers/scsi/isci/request.c
@@ -0,0 +1,3391 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "isci.h"
+#include "task.h"
+#include "request.h"
+#include "scu_completion_codes.h"
+#include "scu_event_codes.h"
+#include "sas.h"
+
+static struct scu_sgl_element_pair *to_sgl_element_pair(struct isci_request *ireq,
+							int idx)
+{
+	if (idx == 0)
+		return &ireq->tc->sgl_pair_ab;
+	else if (idx == 1)
+		return &ireq->tc->sgl_pair_cd;
+	else if (idx < 0)
+		return NULL;
+	else
+		return &ireq->sg_table[idx - 2];
+}
+
+static dma_addr_t to_sgl_element_pair_dma(struct isci_host *ihost,
+					  struct isci_request *ireq, u32 idx)
+{
+	u32 offset;
+
+	if (idx == 0) {
+		offset = (void *) &ireq->tc->sgl_pair_ab -
+			 (void *) &ihost->task_context_table[0];
+		return ihost->task_context_dma + offset;
+	} else if (idx == 1) {
+		offset = (void *) &ireq->tc->sgl_pair_cd -
+			 (void *) &ihost->task_context_table[0];
+		return ihost->task_context_dma + offset;
+	}
+
+	return sci_io_request_get_dma_addr(ireq, &ireq->sg_table[idx - 2]);
+}
+
+static void init_sgl_element(struct scu_sgl_element *e, struct scatterlist *sg)
+{
+	e->length = sg_dma_len(sg);
+	e->address_upper = upper_32_bits(sg_dma_address(sg));
+	e->address_lower = lower_32_bits(sg_dma_address(sg));
+	e->address_modifier = 0;
+}
+
+static void sci_request_build_sgl(struct isci_request *ireq)
+{
+	struct isci_host *ihost = ireq->isci_host;
+	struct sas_task *task = isci_request_access_task(ireq);
+	struct scatterlist *sg = NULL;
+	dma_addr_t dma_addr;
+	u32 sg_idx = 0;
+	struct scu_sgl_element_pair *scu_sg   = NULL;
+	struct scu_sgl_element_pair *prev_sg  = NULL;
+
+	if (task->num_scatter > 0) {
+		sg = task->scatter;
+
+		while (sg) {
+			scu_sg = to_sgl_element_pair(ireq, sg_idx);
+			init_sgl_element(&scu_sg->A, sg);
+			sg = sg_next(sg);
+			if (sg) {
+				init_sgl_element(&scu_sg->B, sg);
+				sg = sg_next(sg);
+			} else
+				memset(&scu_sg->B, 0, sizeof(scu_sg->B));
+
+			if (prev_sg) {
+				dma_addr = to_sgl_element_pair_dma(ihost,
+								   ireq,
+								   sg_idx);
+
+				prev_sg->next_pair_upper =
+					upper_32_bits(dma_addr);
+				prev_sg->next_pair_lower =
+					lower_32_bits(dma_addr);
+			}
+
+			prev_sg = scu_sg;
+			sg_idx++;
+		}
+	} else {	/* handle when no sg */
+		scu_sg = to_sgl_element_pair(ireq, sg_idx);
+
+		dma_addr = dma_map_single(&ihost->pdev->dev,
+					  task->scatter,
+					  task->total_xfer_len,
+					  task->data_dir);
+
+		ireq->zero_scatter_daddr = dma_addr;
+
+		scu_sg->A.length = task->total_xfer_len;
+		scu_sg->A.address_upper = upper_32_bits(dma_addr);
+		scu_sg->A.address_lower = lower_32_bits(dma_addr);
+	}
+
+	if (scu_sg) {
+		scu_sg->next_pair_upper = 0;
+		scu_sg->next_pair_lower = 0;
+	}
+}
+
+static void sci_io_request_build_ssp_command_iu(struct isci_request *ireq)
+{
+	struct ssp_cmd_iu *cmd_iu;
+	struct sas_task *task = isci_request_access_task(ireq);
+
+	cmd_iu = &ireq->ssp.cmd;
+
+	memcpy(cmd_iu->LUN, task->ssp_task.LUN, 8);
+	cmd_iu->add_cdb_len = 0;
+	cmd_iu->_r_a = 0;
+	cmd_iu->_r_b = 0;
+	cmd_iu->en_fburst = 0; /* unsupported */
+	cmd_iu->task_prio = task->ssp_task.task_prio;
+	cmd_iu->task_attr = task->ssp_task.task_attr;
+	cmd_iu->_r_c = 0;
+
+	sci_swab32_cpy(&cmd_iu->cdb, task->ssp_task.cdb,
+		       sizeof(task->ssp_task.cdb) / sizeof(u32));
+}
+
+static void sci_task_request_build_ssp_task_iu(struct isci_request *ireq)
+{
+	struct ssp_task_iu *task_iu;
+	struct sas_task *task = isci_request_access_task(ireq);
+	struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq);
+
+	task_iu = &ireq->ssp.tmf;
+
+	memset(task_iu, 0, sizeof(struct ssp_task_iu));
+
+	memcpy(task_iu->LUN, task->ssp_task.LUN, 8);
+
+	task_iu->task_func = isci_tmf->tmf_code;
+	task_iu->task_tag =
+		(ireq->ttype == tmf_task) ?
+		isci_tmf->io_tag :
+		SCI_CONTROLLER_INVALID_IO_TAG;
+}
+
+/**
+ * This method is will fill in the SCU Task Context for any type of SSP request.
+ * @sci_req:
+ * @task_context:
+ *
+ */
+static void scu_ssp_reqeust_construct_task_context(
+	struct isci_request *ireq,
+	struct scu_task_context *task_context)
+{
+	dma_addr_t dma_addr;
+	struct isci_remote_device *idev;
+	struct isci_port *iport;
+
+	idev = ireq->target_device;
+	iport = idev->owning_port;
+
+	/* Fill in the TC with the its required data */
+	task_context->abort = 0;
+	task_context->priority = 0;
+	task_context->initiator_request = 1;
+	task_context->connection_rate = idev->connection_rate;
+	task_context->protocol_engine_index = ISCI_PEG;
+	task_context->logical_port_index = iport->physical_port_index;
+	task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP;
+	task_context->valid = SCU_TASK_CONTEXT_VALID;
+	task_context->context_type = SCU_TASK_CONTEXT_TYPE;
+
+	task_context->remote_node_index = idev->rnc.remote_node_index;
+	task_context->command_code = 0;
+
+	task_context->link_layer_control = 0;
+	task_context->do_not_dma_ssp_good_response = 1;
+	task_context->strict_ordering = 0;
+	task_context->control_frame = 0;
+	task_context->timeout_enable = 0;
+	task_context->block_guard_enable = 0;
+
+	task_context->address_modifier = 0;
+
+	/* task_context->type.ssp.tag = ireq->io_tag; */
+	task_context->task_phase = 0x01;
+
+	ireq->post_context = (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+			      (ISCI_PEG << SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+			      (iport->physical_port_index <<
+			       SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
+			      ISCI_TAG_TCI(ireq->io_tag));
+
+	/*
+	 * Copy the physical address for the command buffer to the
+	 * SCU Task Context
+	 */
+	dma_addr = sci_io_request_get_dma_addr(ireq, &ireq->ssp.cmd);
+
+	task_context->command_iu_upper = upper_32_bits(dma_addr);
+	task_context->command_iu_lower = lower_32_bits(dma_addr);
+
+	/*
+	 * Copy the physical address for the response buffer to the
+	 * SCU Task Context
+	 */
+	dma_addr = sci_io_request_get_dma_addr(ireq, &ireq->ssp.rsp);
+
+	task_context->response_iu_upper = upper_32_bits(dma_addr);
+	task_context->response_iu_lower = lower_32_bits(dma_addr);
+}
+
+/**
+ * This method is will fill in the SCU Task Context for a SSP IO request.
+ * @sci_req:
+ *
+ */
+static void scu_ssp_io_request_construct_task_context(struct isci_request *ireq,
+						      enum dma_data_direction dir,
+						      u32 len)
+{
+	struct scu_task_context *task_context = ireq->tc;
+
+	scu_ssp_reqeust_construct_task_context(ireq, task_context);
+
+	task_context->ssp_command_iu_length =
+		sizeof(struct ssp_cmd_iu) / sizeof(u32);
+	task_context->type.ssp.frame_type = SSP_COMMAND;
+
+	switch (dir) {
+	case DMA_FROM_DEVICE:
+	case DMA_NONE:
+	default:
+		task_context->task_type = SCU_TASK_TYPE_IOREAD;
+		break;
+	case DMA_TO_DEVICE:
+		task_context->task_type = SCU_TASK_TYPE_IOWRITE;
+		break;
+	}
+
+	task_context->transfer_length_bytes = len;
+
+	if (task_context->transfer_length_bytes > 0)
+		sci_request_build_sgl(ireq);
+}
+
+/**
+ * This method will fill in the SCU Task Context for a SSP Task request.  The
+ *    following important settings are utilized: -# priority ==
+ *    SCU_TASK_PRIORITY_HIGH.  This ensures that the task request is issued
+ *    ahead of other task destined for the same Remote Node. -# task_type ==
+ *    SCU_TASK_TYPE_IOREAD.  This simply indicates that a normal request type
+ *    (i.e. non-raw frame) is being utilized to perform task management. -#
+ *    control_frame == 1.  This ensures that the proper endianess is set so
+ *    that the bytes are transmitted in the right order for a task frame.
+ * @sci_req: This parameter specifies the task request object being
+ *    constructed.
+ *
+ */
+static void scu_ssp_task_request_construct_task_context(struct isci_request *ireq)
+{
+	struct scu_task_context *task_context = ireq->tc;
+
+	scu_ssp_reqeust_construct_task_context(ireq, task_context);
+
+	task_context->control_frame                = 1;
+	task_context->priority                     = SCU_TASK_PRIORITY_HIGH;
+	task_context->task_type                    = SCU_TASK_TYPE_RAW_FRAME;
+	task_context->transfer_length_bytes        = 0;
+	task_context->type.ssp.frame_type          = SSP_TASK;
+	task_context->ssp_command_iu_length =
+		sizeof(struct ssp_task_iu) / sizeof(u32);
+}
+
+/**
+ * This method is will fill in the SCU Task Context for any type of SATA
+ *    request.  This is called from the various SATA constructors.
+ * @sci_req: The general IO request object which is to be used in
+ *    constructing the SCU task context.
+ * @task_context: The buffer pointer for the SCU task context which is being
+ *    constructed.
+ *
+ * The general io request construction is complete. The buffer assignment for
+ * the command buffer is complete. none Revisit task context construction to
+ * determine what is common for SSP/SMP/STP task context structures.
+ */
+static void scu_sata_reqeust_construct_task_context(
+	struct isci_request *ireq,
+	struct scu_task_context *task_context)
+{
+	dma_addr_t dma_addr;
+	struct isci_remote_device *idev;
+	struct isci_port *iport;
+
+	idev = ireq->target_device;
+	iport = idev->owning_port;
+
+	/* Fill in the TC with the its required data */
+	task_context->abort = 0;
+	task_context->priority = SCU_TASK_PRIORITY_NORMAL;
+	task_context->initiator_request = 1;
+	task_context->connection_rate = idev->connection_rate;
+	task_context->protocol_engine_index = ISCI_PEG;
+	task_context->logical_port_index = iport->physical_port_index;
+	task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_STP;
+	task_context->valid = SCU_TASK_CONTEXT_VALID;
+	task_context->context_type = SCU_TASK_CONTEXT_TYPE;
+
+	task_context->remote_node_index = idev->rnc.remote_node_index;
+	task_context->command_code = 0;
+
+	task_context->link_layer_control = 0;
+	task_context->do_not_dma_ssp_good_response = 1;
+	task_context->strict_ordering = 0;
+	task_context->control_frame = 0;
+	task_context->timeout_enable = 0;
+	task_context->block_guard_enable = 0;
+
+	task_context->address_modifier = 0;
+	task_context->task_phase = 0x01;
+
+	task_context->ssp_command_iu_length =
+		(sizeof(struct host_to_dev_fis) - sizeof(u32)) / sizeof(u32);
+
+	/* Set the first word of the H2D REG FIS */
+	task_context->type.words[0] = *(u32 *)&ireq->stp.cmd;
+
+	ireq->post_context = (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+			      (ISCI_PEG << SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+			      (iport->physical_port_index <<
+			       SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
+			      ISCI_TAG_TCI(ireq->io_tag));
+	/*
+	 * Copy the physical address for the command buffer to the SCU Task
+	 * Context. We must offset the command buffer by 4 bytes because the
+	 * first 4 bytes are transfered in the body of the TC.
+	 */
+	dma_addr = sci_io_request_get_dma_addr(ireq,
+						((char *) &ireq->stp.cmd) +
+						sizeof(u32));
+
+	task_context->command_iu_upper = upper_32_bits(dma_addr);
+	task_context->command_iu_lower = lower_32_bits(dma_addr);
+
+	/* SATA Requests do not have a response buffer */
+	task_context->response_iu_upper = 0;
+	task_context->response_iu_lower = 0;
+}
+
+static void scu_stp_raw_request_construct_task_context(struct isci_request *ireq)
+{
+	struct scu_task_context *task_context = ireq->tc;
+
+	scu_sata_reqeust_construct_task_context(ireq, task_context);
+
+	task_context->control_frame         = 0;
+	task_context->priority              = SCU_TASK_PRIORITY_NORMAL;
+	task_context->task_type             = SCU_TASK_TYPE_SATA_RAW_FRAME;
+	task_context->type.stp.fis_type     = FIS_REGH2D;
+	task_context->transfer_length_bytes = sizeof(struct host_to_dev_fis) - sizeof(u32);
+}
+
+static enum sci_status sci_stp_pio_request_construct(struct isci_request *ireq,
+							  bool copy_rx_frame)
+{
+	struct isci_stp_request *stp_req = &ireq->stp.req;
+
+	scu_stp_raw_request_construct_task_context(ireq);
+
+	stp_req->status = 0;
+	stp_req->sgl.offset = 0;
+	stp_req->sgl.set = SCU_SGL_ELEMENT_PAIR_A;
+
+	if (copy_rx_frame) {
+		sci_request_build_sgl(ireq);
+		stp_req->sgl.index = 0;
+	} else {
+		/* The user does not want the data copied to the SGL buffer location */
+		stp_req->sgl.index = -1;
+	}
+
+	return SCI_SUCCESS;
+}
+
+/**
+ *
+ * @sci_req: This parameter specifies the request to be constructed as an
+ *    optimized request.
+ * @optimized_task_type: This parameter specifies whether the request is to be
+ *    an UDMA request or a NCQ request. - A value of 0 indicates UDMA. - A
+ *    value of 1 indicates NCQ.
+ *
+ * This method will perform request construction common to all types of STP
+ * requests that are optimized by the silicon (i.e. UDMA, NCQ). This method
+ * returns an indication as to whether the construction was successful.
+ */
+static void sci_stp_optimized_request_construct(struct isci_request *ireq,
+						     u8 optimized_task_type,
+						     u32 len,
+						     enum dma_data_direction dir)
+{
+	struct scu_task_context *task_context = ireq->tc;
+
+	/* Build the STP task context structure */
+	scu_sata_reqeust_construct_task_context(ireq, task_context);
+
+	/* Copy over the SGL elements */
+	sci_request_build_sgl(ireq);
+
+	/* Copy over the number of bytes to be transfered */
+	task_context->transfer_length_bytes = len;
+
+	if (dir == DMA_TO_DEVICE) {
+		/*
+		 * The difference between the DMA IN and DMA OUT request task type
+		 * values are consistent with the difference between FPDMA READ
+		 * and FPDMA WRITE values.  Add the supplied task type parameter
+		 * to this difference to set the task type properly for this
+		 * DATA OUT (WRITE) case. */
+		task_context->task_type = optimized_task_type + (SCU_TASK_TYPE_DMA_OUT
+								 - SCU_TASK_TYPE_DMA_IN);
+	} else {
+		/*
+		 * For the DATA IN (READ) case, simply save the supplied
+		 * optimized task type. */
+		task_context->task_type = optimized_task_type;
+	}
+}
+
+
+
+static enum sci_status
+sci_io_request_construct_sata(struct isci_request *ireq,
+			       u32 len,
+			       enum dma_data_direction dir,
+			       bool copy)
+{
+	enum sci_status status = SCI_SUCCESS;
+	struct sas_task *task = isci_request_access_task(ireq);
+
+	/* check for management protocols */
+	if (ireq->ttype == tmf_task) {
+		struct isci_tmf *tmf = isci_request_access_tmf(ireq);
+
+		if (tmf->tmf_code == isci_tmf_sata_srst_high ||
+		    tmf->tmf_code == isci_tmf_sata_srst_low) {
+			scu_stp_raw_request_construct_task_context(ireq);
+			return SCI_SUCCESS;
+		} else {
+			dev_err(&ireq->owning_controller->pdev->dev,
+				"%s: Request 0x%p received un-handled SAT "
+				"management protocol 0x%x.\n",
+				__func__, ireq, tmf->tmf_code);
+
+			return SCI_FAILURE;
+		}
+	}
+
+	if (!sas_protocol_ata(task->task_proto)) {
+		dev_err(&ireq->owning_controller->pdev->dev,
+			"%s: Non-ATA protocol in SATA path: 0x%x\n",
+			__func__,
+			task->task_proto);
+		return SCI_FAILURE;
+
+	}
+
+	/* non data */
+	if (task->data_dir == DMA_NONE) {
+		scu_stp_raw_request_construct_task_context(ireq);
+		return SCI_SUCCESS;
+	}
+
+	/* NCQ */
+	if (task->ata_task.use_ncq) {
+		sci_stp_optimized_request_construct(ireq,
+							 SCU_TASK_TYPE_FPDMAQ_READ,
+							 len, dir);
+		return SCI_SUCCESS;
+	}
+
+	/* DMA */
+	if (task->ata_task.dma_xfer) {
+		sci_stp_optimized_request_construct(ireq,
+							 SCU_TASK_TYPE_DMA_IN,
+							 len, dir);
+		return SCI_SUCCESS;
+	} else /* PIO */
+		return sci_stp_pio_request_construct(ireq, copy);
+
+	return status;
+}
+
+static enum sci_status sci_io_request_construct_basic_ssp(struct isci_request *ireq)
+{
+	struct sas_task *task = isci_request_access_task(ireq);
+
+	ireq->protocol = SCIC_SSP_PROTOCOL;
+
+	scu_ssp_io_request_construct_task_context(ireq,
+						  task->data_dir,
+						  task->total_xfer_len);
+
+	sci_io_request_build_ssp_command_iu(ireq);
+
+	sci_change_state(&ireq->sm, SCI_REQ_CONSTRUCTED);
+
+	return SCI_SUCCESS;
+}
+
+enum sci_status sci_task_request_construct_ssp(
+	struct isci_request *ireq)
+{
+	/* Construct the SSP Task SCU Task Context */
+	scu_ssp_task_request_construct_task_context(ireq);
+
+	/* Fill in the SSP Task IU */
+	sci_task_request_build_ssp_task_iu(ireq);
+
+	sci_change_state(&ireq->sm, SCI_REQ_CONSTRUCTED);
+
+	return SCI_SUCCESS;
+}
+
+static enum sci_status sci_io_request_construct_basic_sata(struct isci_request *ireq)
+{
+	enum sci_status status;
+	bool copy = false;
+	struct sas_task *task = isci_request_access_task(ireq);
+
+	ireq->protocol = SCIC_STP_PROTOCOL;
+
+	copy = (task->data_dir == DMA_NONE) ? false : true;
+
+	status = sci_io_request_construct_sata(ireq,
+						task->total_xfer_len,
+						task->data_dir,
+						copy);
+
+	if (status == SCI_SUCCESS)
+		sci_change_state(&ireq->sm, SCI_REQ_CONSTRUCTED);
+
+	return status;
+}
+
+enum sci_status sci_task_request_construct_sata(struct isci_request *ireq)
+{
+	enum sci_status status = SCI_SUCCESS;
+
+	/* check for management protocols */
+	if (ireq->ttype == tmf_task) {
+		struct isci_tmf *tmf = isci_request_access_tmf(ireq);
+
+		if (tmf->tmf_code == isci_tmf_sata_srst_high ||
+		    tmf->tmf_code == isci_tmf_sata_srst_low) {
+			scu_stp_raw_request_construct_task_context(ireq);
+		} else {
+			dev_err(&ireq->owning_controller->pdev->dev,
+				"%s: Request 0x%p received un-handled SAT "
+				"Protocol 0x%x.\n",
+				__func__, ireq, tmf->tmf_code);
+
+			return SCI_FAILURE;
+		}
+	}
+
+	if (status != SCI_SUCCESS)
+		return status;
+	sci_change_state(&ireq->sm, SCI_REQ_CONSTRUCTED);
+
+	return status;
+}
+
+/**
+ * sci_req_tx_bytes - bytes transferred when reply underruns request
+ * @sci_req: request that was terminated early
+ */
+#define SCU_TASK_CONTEXT_SRAM 0x200000
+static u32 sci_req_tx_bytes(struct isci_request *ireq)
+{
+	struct isci_host *ihost = ireq->owning_controller;
+	u32 ret_val = 0;
+
+	if (readl(&ihost->smu_registers->address_modifier) == 0) {
+		void __iomem *scu_reg_base = ihost->scu_registers;
+
+		/* get the bytes of data from the Address == BAR1 + 20002Ch + (256*TCi) where
+		 *   BAR1 is the scu_registers
+		 *   0x20002C = 0x200000 + 0x2c
+		 *            = start of task context SRAM + offset of (type.ssp.data_offset)
+		 *   TCi is the io_tag of struct sci_request
+		 */
+		ret_val = readl(scu_reg_base +
+				(SCU_TASK_CONTEXT_SRAM + offsetof(struct scu_task_context, type.ssp.data_offset)) +
+				((sizeof(struct scu_task_context)) * ISCI_TAG_TCI(ireq->io_tag)));
+	}
+
+	return ret_val;
+}
+
+enum sci_status sci_request_start(struct isci_request *ireq)
+{
+	enum sci_base_request_states state;
+	struct scu_task_context *tc = ireq->tc;
+	struct isci_host *ihost = ireq->owning_controller;
+
+	state = ireq->sm.current_state_id;
+	if (state != SCI_REQ_CONSTRUCTED) {
+		dev_warn(&ihost->pdev->dev,
+			"%s: SCIC IO Request requested to start while in wrong "
+			 "state %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	tc->task_index = ISCI_TAG_TCI(ireq->io_tag);
+
+	switch (tc->protocol_type) {
+	case SCU_TASK_CONTEXT_PROTOCOL_SMP:
+	case SCU_TASK_CONTEXT_PROTOCOL_SSP:
+		/* SSP/SMP Frame */
+		tc->type.ssp.tag = ireq->io_tag;
+		tc->type.ssp.target_port_transfer_tag = 0xFFFF;
+		break;
+
+	case SCU_TASK_CONTEXT_PROTOCOL_STP:
+		/* STP/SATA Frame
+		 * tc->type.stp.ncq_tag = ireq->ncq_tag;
+		 */
+		break;
+
+	case SCU_TASK_CONTEXT_PROTOCOL_NONE:
+		/* / @todo When do we set no protocol type? */
+		break;
+
+	default:
+		/* This should never happen since we build the IO
+		 * requests */
+		break;
+	}
+
+	/* Add to the post_context the io tag value */
+	ireq->post_context |= ISCI_TAG_TCI(ireq->io_tag);
+
+	/* Everything is good go ahead and change state */
+	sci_change_state(&ireq->sm, SCI_REQ_STARTED);
+
+	return SCI_SUCCESS;
+}
+
+enum sci_status
+sci_io_request_terminate(struct isci_request *ireq)
+{
+	enum sci_base_request_states state;
+
+	state = ireq->sm.current_state_id;
+
+	switch (state) {
+	case SCI_REQ_CONSTRUCTED:
+		ireq->scu_status = SCU_TASK_DONE_TASK_ABORT;
+		ireq->sci_status = SCI_FAILURE_IO_TERMINATED;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		return SCI_SUCCESS;
+	case SCI_REQ_STARTED:
+	case SCI_REQ_TASK_WAIT_TC_COMP:
+	case SCI_REQ_SMP_WAIT_RESP:
+	case SCI_REQ_SMP_WAIT_TC_COMP:
+	case SCI_REQ_STP_UDMA_WAIT_TC_COMP:
+	case SCI_REQ_STP_UDMA_WAIT_D2H:
+	case SCI_REQ_STP_NON_DATA_WAIT_H2D:
+	case SCI_REQ_STP_NON_DATA_WAIT_D2H:
+	case SCI_REQ_STP_PIO_WAIT_H2D:
+	case SCI_REQ_STP_PIO_WAIT_FRAME:
+	case SCI_REQ_STP_PIO_DATA_IN:
+	case SCI_REQ_STP_PIO_DATA_OUT:
+	case SCI_REQ_STP_SOFT_RESET_WAIT_H2D_ASSERTED:
+	case SCI_REQ_STP_SOFT_RESET_WAIT_H2D_DIAG:
+	case SCI_REQ_STP_SOFT_RESET_WAIT_D2H:
+		sci_change_state(&ireq->sm, SCI_REQ_ABORTING);
+		return SCI_SUCCESS;
+	case SCI_REQ_TASK_WAIT_TC_RESP:
+		sci_change_state(&ireq->sm, SCI_REQ_ABORTING);
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		return SCI_SUCCESS;
+	case SCI_REQ_ABORTING:
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		return SCI_SUCCESS;
+	case SCI_REQ_COMPLETED:
+	default:
+		dev_warn(&ireq->owning_controller->pdev->dev,
+			 "%s: SCIC IO Request requested to abort while in wrong "
+			 "state %d\n",
+			 __func__,
+			 ireq->sm.current_state_id);
+		break;
+	}
+
+	return SCI_FAILURE_INVALID_STATE;
+}
+
+enum sci_status sci_request_complete(struct isci_request *ireq)
+{
+	enum sci_base_request_states state;
+	struct isci_host *ihost = ireq->owning_controller;
+
+	state = ireq->sm.current_state_id;
+	if (WARN_ONCE(state != SCI_REQ_COMPLETED,
+		      "isci: request completion from wrong state (%d)\n", state))
+		return SCI_FAILURE_INVALID_STATE;
+
+	if (ireq->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX)
+		sci_controller_release_frame(ihost,
+						  ireq->saved_rx_frame_index);
+
+	/* XXX can we just stop the machine and remove the 'final' state? */
+	sci_change_state(&ireq->sm, SCI_REQ_FINAL);
+	return SCI_SUCCESS;
+}
+
+enum sci_status sci_io_request_event_handler(struct isci_request *ireq,
+						  u32 event_code)
+{
+	enum sci_base_request_states state;
+	struct isci_host *ihost = ireq->owning_controller;
+
+	state = ireq->sm.current_state_id;
+
+	if (state != SCI_REQ_STP_PIO_DATA_IN) {
+		dev_warn(&ihost->pdev->dev, "%s: (%x) in wrong state %d\n",
+			 __func__, event_code, state);
+
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	switch (scu_get_event_specifier(event_code)) {
+	case SCU_TASK_DONE_CRC_ERR << SCU_EVENT_SPECIFIC_CODE_SHIFT:
+		/* We are waiting for data and the SCU has R_ERR the data frame.
+		 * Go back to waiting for the D2H Register FIS
+		 */
+		sci_change_state(&ireq->sm, SCI_REQ_STP_PIO_WAIT_FRAME);
+		return SCI_SUCCESS;
+	default:
+		dev_err(&ihost->pdev->dev,
+			"%s: pio request unexpected event %#x\n",
+			__func__, event_code);
+
+		/* TODO Should we fail the PIO request when we get an
+		 * unexpected event?
+		 */
+		return SCI_FAILURE;
+	}
+}
+
+/*
+ * This function copies response data for requests returning response data
+ *    instead of sense data.
+ * @sci_req: This parameter specifies the request object for which to copy
+ *    the response data.
+ */
+static void sci_io_request_copy_response(struct isci_request *ireq)
+{
+	void *resp_buf;
+	u32 len;
+	struct ssp_response_iu *ssp_response;
+	struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq);
+
+	ssp_response = &ireq->ssp.rsp;
+
+	resp_buf = &isci_tmf->resp.resp_iu;
+
+	len = min_t(u32,
+		    SSP_RESP_IU_MAX_SIZE,
+		    be32_to_cpu(ssp_response->response_data_len));
+
+	memcpy(resp_buf, ssp_response->resp_data, len);
+}
+
+static enum sci_status
+request_started_state_tc_event(struct isci_request *ireq,
+			       u32 completion_code)
+{
+	struct ssp_response_iu *resp_iu;
+	u8 datapres;
+
+	/* TODO: Any SDMA return code of other than 0 is bad decode 0x003C0000
+	 * to determine SDMA status
+	 */
+	switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+		ireq->scu_status = SCU_TASK_DONE_GOOD;
+		ireq->sci_status = SCI_SUCCESS;
+		break;
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EARLY_RESP): {
+		/* There are times when the SCU hardware will return an early
+		 * response because the io request specified more data than is
+		 * returned by the target device (mode pages, inquiry data,
+		 * etc.).  We must check the response stats to see if this is
+		 * truly a failed request or a good request that just got
+		 * completed early.
+		 */
+		struct ssp_response_iu *resp = &ireq->ssp.rsp;
+		ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
+
+		sci_swab32_cpy(&ireq->ssp.rsp,
+			       &ireq->ssp.rsp,
+			       word_cnt);
+
+		if (resp->status == 0) {
+			ireq->scu_status = SCU_TASK_DONE_GOOD;
+			ireq->sci_status = SCI_SUCCESS_IO_DONE_EARLY;
+		} else {
+			ireq->scu_status = SCU_TASK_DONE_CHECK_RESPONSE;
+			ireq->sci_status = SCI_FAILURE_IO_RESPONSE_VALID;
+		}
+		break;
+	}
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CHECK_RESPONSE): {
+		ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
+
+		sci_swab32_cpy(&ireq->ssp.rsp,
+			       &ireq->ssp.rsp,
+			       word_cnt);
+
+		ireq->scu_status = SCU_TASK_DONE_CHECK_RESPONSE;
+		ireq->sci_status = SCI_FAILURE_IO_RESPONSE_VALID;
+		break;
+	}
+
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RESP_LEN_ERR):
+		/* TODO With TASK_DONE_RESP_LEN_ERR is the response frame
+		 * guaranteed to be received before this completion status is
+		 * posted?
+		 */
+		resp_iu = &ireq->ssp.rsp;
+		datapres = resp_iu->datapres;
+
+		if (datapres == 1 || datapres == 2) {
+			ireq->scu_status = SCU_TASK_DONE_CHECK_RESPONSE;
+			ireq->sci_status = SCI_FAILURE_IO_RESPONSE_VALID;
+		} else {
+			ireq->scu_status = SCU_TASK_DONE_GOOD;
+			ireq->sci_status = SCI_SUCCESS;
+		}
+		break;
+	/* only stp device gets suspended. */
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_PERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_DATA_LEN_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_ABORT_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_WD_LEN):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_RESP):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_SDBFIS):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDB_ERR):
+		if (ireq->protocol == SCIC_STP_PROTOCOL) {
+			ireq->scu_status = SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
+					   SCU_COMPLETION_TL_STATUS_SHIFT;
+			ireq->sci_status = SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED;
+		} else {
+			ireq->scu_status = SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
+					   SCU_COMPLETION_TL_STATUS_SHIFT;
+			ireq->sci_status = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR;
+		}
+		break;
+
+	/* both stp/ssp device gets suspended */
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LF_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_WRONG_DESTINATION):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_BAD_DESTINATION):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_ZONE_VIOLATION):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED):
+		ireq->scu_status = SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
+				   SCU_COMPLETION_TL_STATUS_SHIFT;
+		ireq->sci_status = SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED;
+		break;
+
+	/* neither ssp nor stp gets suspended. */
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_CMD_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_XR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_IU_LEN_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDMA_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OFFSET_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EXCESS_DATA):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_DATA):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OPEN_FAIL):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_VIIT_ENTRY_NV):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_IIT_ENTRY_NV):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RNCNV_OUTBOUND):
+	default:
+		ireq->scu_status = SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
+				   SCU_COMPLETION_TL_STATUS_SHIFT;
+		ireq->sci_status = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR;
+		break;
+	}
+
+	/*
+	 * TODO: This is probably wrong for ACK/NAK timeout conditions
+	 */
+
+	/* In all cases we will treat this as the completion of the IO req. */
+	sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+	return SCI_SUCCESS;
+}
+
+static enum sci_status
+request_aborting_state_tc_event(struct isci_request *ireq,
+				u32 completion_code)
+{
+	switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+	case (SCU_TASK_DONE_GOOD << SCU_COMPLETION_TL_STATUS_SHIFT):
+	case (SCU_TASK_DONE_TASK_ABORT << SCU_COMPLETION_TL_STATUS_SHIFT):
+		ireq->scu_status = SCU_TASK_DONE_TASK_ABORT;
+		ireq->sci_status = SCI_FAILURE_IO_TERMINATED;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		break;
+
+	default:
+		/* Unless we get some strange error wait for the task abort to complete
+		 * TODO: Should there be a state change for this completion?
+		 */
+		break;
+	}
+
+	return SCI_SUCCESS;
+}
+
+static enum sci_status ssp_task_request_await_tc_event(struct isci_request *ireq,
+						       u32 completion_code)
+{
+	switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+		ireq->scu_status = SCU_TASK_DONE_GOOD;
+		ireq->sci_status = SCI_SUCCESS;
+		sci_change_state(&ireq->sm, SCI_REQ_TASK_WAIT_TC_RESP);
+		break;
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO):
+		/* Currently, the decision is to simply allow the task request
+		 * to timeout if the task IU wasn't received successfully.
+		 * There is a potential for receiving multiple task responses if
+		 * we decide to send the task IU again.
+		 */
+		dev_warn(&ireq->owning_controller->pdev->dev,
+			 "%s: TaskRequest:0x%p CompletionCode:%x - "
+			 "ACK/NAK timeout\n", __func__, ireq,
+			 completion_code);
+
+		sci_change_state(&ireq->sm, SCI_REQ_TASK_WAIT_TC_RESP);
+		break;
+	default:
+		/*
+		 * All other completion status cause the IO to be complete.
+		 * If a NAK was received, then it is up to the user to retry
+		 * the request.
+		 */
+		ireq->scu_status = SCU_NORMALIZE_COMPLETION_STATUS(completion_code);
+		ireq->sci_status = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		break;
+	}
+
+	return SCI_SUCCESS;
+}
+
+static enum sci_status
+smp_request_await_response_tc_event(struct isci_request *ireq,
+				    u32 completion_code)
+{
+	switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+		/* In the AWAIT RESPONSE state, any TC completion is
+		 * unexpected.  but if the TC has success status, we
+		 * complete the IO anyway.
+		 */
+		ireq->scu_status = SCU_TASK_DONE_GOOD;
+		ireq->sci_status = SCI_SUCCESS;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		break;
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR):
+		/* These status has been seen in a specific LSI
+		 * expander, which sometimes is not able to send smp
+		 * response within 2 ms. This causes our hardware break
+		 * the connection and set TC completion with one of
+		 * these SMP_XXX_XX_ERR status. For these type of error,
+		 * we ask ihost user to retry the request.
+		 */
+		ireq->scu_status = SCU_TASK_DONE_SMP_RESP_TO_ERR;
+		ireq->sci_status = SCI_FAILURE_RETRY_REQUIRED;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		break;
+	default:
+		/* All other completion status cause the IO to be complete.  If a NAK
+		 * was received, then it is up to the user to retry the request
+		 */
+		ireq->scu_status = SCU_NORMALIZE_COMPLETION_STATUS(completion_code);
+		ireq->sci_status = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		break;
+	}
+
+	return SCI_SUCCESS;
+}
+
+static enum sci_status
+smp_request_await_tc_event(struct isci_request *ireq,
+			   u32 completion_code)
+{
+	switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+		ireq->scu_status = SCU_TASK_DONE_GOOD;
+		ireq->sci_status = SCI_SUCCESS;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		break;
+	default:
+		/* All other completion status cause the IO to be
+		 * complete.  If a NAK was received, then it is up to
+		 * the user to retry the request.
+		 */
+		ireq->scu_status = SCU_NORMALIZE_COMPLETION_STATUS(completion_code);
+		ireq->sci_status = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		break;
+	}
+
+	return SCI_SUCCESS;
+}
+
+static struct scu_sgl_element *pio_sgl_next(struct isci_stp_request *stp_req)
+{
+	struct scu_sgl_element *sgl;
+	struct scu_sgl_element_pair *sgl_pair;
+	struct isci_request *ireq = to_ireq(stp_req);
+	struct isci_stp_pio_sgl *pio_sgl = &stp_req->sgl;
+
+	sgl_pair = to_sgl_element_pair(ireq, pio_sgl->index);
+	if (!sgl_pair)
+		sgl = NULL;
+	else if (pio_sgl->set == SCU_SGL_ELEMENT_PAIR_A) {
+		if (sgl_pair->B.address_lower == 0 &&
+		    sgl_pair->B.address_upper == 0) {
+			sgl = NULL;
+		} else {
+			pio_sgl->set = SCU_SGL_ELEMENT_PAIR_B;
+			sgl = &sgl_pair->B;
+		}
+	} else {
+		if (sgl_pair->next_pair_lower == 0 &&
+		    sgl_pair->next_pair_upper == 0) {
+			sgl = NULL;
+		} else {
+			pio_sgl->index++;
+			pio_sgl->set = SCU_SGL_ELEMENT_PAIR_A;
+			sgl_pair = to_sgl_element_pair(ireq, pio_sgl->index);
+			sgl = &sgl_pair->A;
+		}
+	}
+
+	return sgl;
+}
+
+static enum sci_status
+stp_request_non_data_await_h2d_tc_event(struct isci_request *ireq,
+					u32 completion_code)
+{
+	switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+		ireq->scu_status = SCU_TASK_DONE_GOOD;
+		ireq->sci_status = SCI_SUCCESS;
+		sci_change_state(&ireq->sm, SCI_REQ_STP_NON_DATA_WAIT_D2H);
+		break;
+
+	default:
+		/* All other completion status cause the IO to be
+		 * complete.  If a NAK was received, then it is up to
+		 * the user to retry the request.
+		 */
+		ireq->scu_status = SCU_NORMALIZE_COMPLETION_STATUS(completion_code);
+		ireq->sci_status = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		break;
+	}
+
+	return SCI_SUCCESS;
+}
+
+#define SCU_MAX_FRAME_BUFFER_SIZE  0x400  /* 1K is the maximum SCU frame data payload */
+
+/* transmit DATA_FIS from (current sgl + offset) for input
+ * parameter length. current sgl and offset is alreay stored in the IO request
+ */
+static enum sci_status sci_stp_request_pio_data_out_trasmit_data_frame(
+	struct isci_request *ireq,
+	u32 length)
+{
+	struct isci_stp_request *stp_req = &ireq->stp.req;
+	struct scu_task_context *task_context = ireq->tc;
+	struct scu_sgl_element_pair *sgl_pair;
+	struct scu_sgl_element *current_sgl;
+
+	/* Recycle the TC and reconstruct it for sending out DATA FIS containing
+	 * for the data from current_sgl+offset for the input length
+	 */
+	sgl_pair = to_sgl_element_pair(ireq, stp_req->sgl.index);
+	if (stp_req->sgl.set == SCU_SGL_ELEMENT_PAIR_A)
+		current_sgl = &sgl_pair->A;
+	else
+		current_sgl = &sgl_pair->B;
+
+	/* update the TC */
+	task_context->command_iu_upper = current_sgl->address_upper;
+	task_context->command_iu_lower = current_sgl->address_lower;
+	task_context->transfer_length_bytes = length;
+	task_context->type.stp.fis_type = FIS_DATA;
+
+	/* send the new TC out. */
+	return sci_controller_continue_io(ireq);
+}
+
+static enum sci_status sci_stp_request_pio_data_out_transmit_data(struct isci_request *ireq)
+{
+	struct isci_stp_request *stp_req = &ireq->stp.req;
+	struct scu_sgl_element_pair *sgl_pair;
+	struct scu_sgl_element *sgl;
+	enum sci_status status;
+	u32 offset;
+	u32 len = 0;
+
+	offset = stp_req->sgl.offset;
+	sgl_pair = to_sgl_element_pair(ireq, stp_req->sgl.index);
+	if (WARN_ONCE(!sgl_pair, "%s: null sgl element", __func__))
+		return SCI_FAILURE;
+
+	if (stp_req->sgl.set == SCU_SGL_ELEMENT_PAIR_A) {
+		sgl = &sgl_pair->A;
+		len = sgl_pair->A.length - offset;
+	} else {
+		sgl = &sgl_pair->B;
+		len = sgl_pair->B.length - offset;
+	}
+
+	if (stp_req->pio_len == 0)
+		return SCI_SUCCESS;
+
+	if (stp_req->pio_len >= len) {
+		status = sci_stp_request_pio_data_out_trasmit_data_frame(ireq, len);
+		if (status != SCI_SUCCESS)
+			return status;
+		stp_req->pio_len -= len;
+
+		/* update the current sgl, offset and save for future */
+		sgl = pio_sgl_next(stp_req);
+		offset = 0;
+	} else if (stp_req->pio_len < len) {
+		sci_stp_request_pio_data_out_trasmit_data_frame(ireq, stp_req->pio_len);
+
+		/* Sgl offset will be adjusted and saved for future */
+		offset += stp_req->pio_len;
+		sgl->address_lower += stp_req->pio_len;
+		stp_req->pio_len = 0;
+	}
+
+	stp_req->sgl.offset = offset;
+
+	return status;
+}
+
+/**
+ *
+ * @stp_request: The request that is used for the SGL processing.
+ * @data_buffer: The buffer of data to be copied.
+ * @length: The length of the data transfer.
+ *
+ * Copy the data from the buffer for the length specified to the IO reqeust SGL
+ * specified data region. enum sci_status
+ */
+static enum sci_status
+sci_stp_request_pio_data_in_copy_data_buffer(struct isci_stp_request *stp_req,
+						  u8 *data_buf, u32 len)
+{
+	struct isci_request *ireq;
+	u8 *src_addr;
+	int copy_len;
+	struct sas_task *task;
+	struct scatterlist *sg;
+	void *kaddr;
+	int total_len = len;
+
+	ireq = to_ireq(stp_req);
+	task = isci_request_access_task(ireq);
+	src_addr = data_buf;
+
+	if (task->num_scatter > 0) {
+		sg = task->scatter;
+
+		while (total_len > 0) {
+			struct page *page = sg_page(sg);
+
+			copy_len = min_t(int, total_len, sg_dma_len(sg));
+			kaddr = kmap_atomic(page, KM_IRQ0);
+			memcpy(kaddr + sg->offset, src_addr, copy_len);
+			kunmap_atomic(kaddr, KM_IRQ0);
+			total_len -= copy_len;
+			src_addr += copy_len;
+			sg = sg_next(sg);
+		}
+	} else {
+		BUG_ON(task->total_xfer_len < total_len);
+		memcpy(task->scatter, src_addr, total_len);
+	}
+
+	return SCI_SUCCESS;
+}
+
+/**
+ *
+ * @sci_req: The PIO DATA IN request that is to receive the data.
+ * @data_buffer: The buffer to copy from.
+ *
+ * Copy the data buffer to the io request data region. enum sci_status
+ */
+static enum sci_status sci_stp_request_pio_data_in_copy_data(
+	struct isci_stp_request *stp_req,
+	u8 *data_buffer)
+{
+	enum sci_status status;
+
+	/*
+	 * If there is less than 1K remaining in the transfer request
+	 * copy just the data for the transfer */
+	if (stp_req->pio_len < SCU_MAX_FRAME_BUFFER_SIZE) {
+		status = sci_stp_request_pio_data_in_copy_data_buffer(
+			stp_req, data_buffer, stp_req->pio_len);
+
+		if (status == SCI_SUCCESS)
+			stp_req->pio_len = 0;
+	} else {
+		/* We are transfering the whole frame so copy */
+		status = sci_stp_request_pio_data_in_copy_data_buffer(
+			stp_req, data_buffer, SCU_MAX_FRAME_BUFFER_SIZE);
+
+		if (status == SCI_SUCCESS)
+			stp_req->pio_len -= SCU_MAX_FRAME_BUFFER_SIZE;
+	}
+
+	return status;
+}
+
+static enum sci_status
+stp_request_pio_await_h2d_completion_tc_event(struct isci_request *ireq,
+					      u32 completion_code)
+{
+	enum sci_status status = SCI_SUCCESS;
+
+	switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+		ireq->scu_status = SCU_TASK_DONE_GOOD;
+		ireq->sci_status = SCI_SUCCESS;
+		sci_change_state(&ireq->sm, SCI_REQ_STP_PIO_WAIT_FRAME);
+		break;
+
+	default:
+		/* All other completion status cause the IO to be
+		 * complete.  If a NAK was received, then it is up to
+		 * the user to retry the request.
+		 */
+		ireq->scu_status = SCU_NORMALIZE_COMPLETION_STATUS(completion_code);
+		ireq->sci_status = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		break;
+	}
+
+	return status;
+}
+
+static enum sci_status
+pio_data_out_tx_done_tc_event(struct isci_request *ireq,
+			      u32 completion_code)
+{
+	enum sci_status status = SCI_SUCCESS;
+	bool all_frames_transferred = false;
+	struct isci_stp_request *stp_req = &ireq->stp.req;
+
+	switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+		/* Transmit data */
+		if (stp_req->pio_len != 0) {
+			status = sci_stp_request_pio_data_out_transmit_data(ireq);
+			if (status == SCI_SUCCESS) {
+				if (stp_req->pio_len == 0)
+					all_frames_transferred = true;
+			}
+		} else if (stp_req->pio_len == 0) {
+			/*
+			 * this will happen if the all data is written at the
+			 * first time after the pio setup fis is received
+			 */
+			all_frames_transferred  = true;
+		}
+
+		/* all data transferred. */
+		if (all_frames_transferred) {
+			/*
+			 * Change the state to SCI_REQ_STP_PIO_DATA_IN
+			 * and wait for PIO_SETUP fis / or D2H REg fis. */
+			sci_change_state(&ireq->sm, SCI_REQ_STP_PIO_WAIT_FRAME);
+		}
+		break;
+
+	default:
+		/*
+		 * All other completion status cause the IO to be complete.
+		 * If a NAK was received, then it is up to the user to retry
+		 * the request.
+		 */
+		ireq->scu_status = SCU_NORMALIZE_COMPLETION_STATUS(completion_code);
+		ireq->sci_status = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		break;
+	}
+
+	return status;
+}
+
+static enum sci_status sci_stp_request_udma_general_frame_handler(struct isci_request *ireq,
+								       u32 frame_index)
+{
+	struct isci_host *ihost = ireq->owning_controller;
+	struct dev_to_host_fis *frame_header;
+	enum sci_status status;
+	u32 *frame_buffer;
+
+	status = sci_unsolicited_frame_control_get_header(&ihost->uf_control,
+							       frame_index,
+							       (void **)&frame_header);
+
+	if ((status == SCI_SUCCESS) &&
+	    (frame_header->fis_type == FIS_REGD2H)) {
+		sci_unsolicited_frame_control_get_buffer(&ihost->uf_control,
+							      frame_index,
+							      (void **)&frame_buffer);
+
+		sci_controller_copy_sata_response(&ireq->stp.rsp,
+						       frame_header,
+						       frame_buffer);
+	}
+
+	sci_controller_release_frame(ihost, frame_index);
+
+	return status;
+}
+
+enum sci_status
+sci_io_request_frame_handler(struct isci_request *ireq,
+				  u32 frame_index)
+{
+	struct isci_host *ihost = ireq->owning_controller;
+	struct isci_stp_request *stp_req = &ireq->stp.req;
+	enum sci_base_request_states state;
+	enum sci_status status;
+	ssize_t word_cnt;
+
+	state = ireq->sm.current_state_id;
+	switch (state)  {
+	case SCI_REQ_STARTED: {
+		struct ssp_frame_hdr ssp_hdr;
+		void *frame_header;
+
+		sci_unsolicited_frame_control_get_header(&ihost->uf_control,
+							      frame_index,
+							      &frame_header);
+
+		word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32);
+		sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt);
+
+		if (ssp_hdr.frame_type == SSP_RESPONSE) {
+			struct ssp_response_iu *resp_iu;
+			ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
+
+			sci_unsolicited_frame_control_get_buffer(&ihost->uf_control,
+								      frame_index,
+								      (void **)&resp_iu);
+
+			sci_swab32_cpy(&ireq->ssp.rsp, resp_iu, word_cnt);
+
+			resp_iu = &ireq->ssp.rsp;
+
+			if (resp_iu->datapres == 0x01 ||
+			    resp_iu->datapres == 0x02) {
+				ireq->scu_status = SCU_TASK_DONE_CHECK_RESPONSE;
+				ireq->sci_status = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR;
+			} else {
+				ireq->scu_status = SCU_TASK_DONE_GOOD;
+				ireq->sci_status = SCI_SUCCESS;
+			}
+		} else {
+			/* not a response frame, why did it get forwarded? */
+			dev_err(&ihost->pdev->dev,
+				"%s: SCIC IO Request 0x%p received unexpected "
+				"frame %d type 0x%02x\n", __func__, ireq,
+				frame_index, ssp_hdr.frame_type);
+		}
+
+		/*
+		 * In any case we are done with this frame buffer return it to
+		 * the controller
+		 */
+		sci_controller_release_frame(ihost, frame_index);
+
+		return SCI_SUCCESS;
+	}
+
+	case SCI_REQ_TASK_WAIT_TC_RESP:
+		sci_io_request_copy_response(ireq);
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		sci_controller_release_frame(ihost, frame_index);
+		return SCI_SUCCESS;
+
+	case SCI_REQ_SMP_WAIT_RESP: {
+		struct smp_resp *rsp_hdr = &ireq->smp.rsp;
+		void *frame_header;
+
+		sci_unsolicited_frame_control_get_header(&ihost->uf_control,
+							      frame_index,
+							      &frame_header);
+
+		/* byte swap the header. */
+		word_cnt = SMP_RESP_HDR_SZ / sizeof(u32);
+		sci_swab32_cpy(rsp_hdr, frame_header, word_cnt);
+
+		if (rsp_hdr->frame_type == SMP_RESPONSE) {
+			void *smp_resp;
+
+			sci_unsolicited_frame_control_get_buffer(&ihost->uf_control,
+								      frame_index,
+								      &smp_resp);
+
+			word_cnt = (sizeof(struct smp_resp) - SMP_RESP_HDR_SZ) /
+				sizeof(u32);
+
+			sci_swab32_cpy(((u8 *) rsp_hdr) + SMP_RESP_HDR_SZ,
+				       smp_resp, word_cnt);
+
+			ireq->scu_status = SCU_TASK_DONE_GOOD;
+			ireq->sci_status = SCI_SUCCESS;
+			sci_change_state(&ireq->sm, SCI_REQ_SMP_WAIT_TC_COMP);
+		} else {
+			/*
+			 * This was not a response frame why did it get
+			 * forwarded?
+			 */
+			dev_err(&ihost->pdev->dev,
+				"%s: SCIC SMP Request 0x%p received unexpected "
+				"frame %d type 0x%02x\n",
+				__func__,
+				ireq,
+				frame_index,
+				rsp_hdr->frame_type);
+
+			ireq->scu_status = SCU_TASK_DONE_SMP_FRM_TYPE_ERR;
+			ireq->sci_status = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR;
+			sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		}
+
+		sci_controller_release_frame(ihost, frame_index);
+
+		return SCI_SUCCESS;
+	}
+
+	case SCI_REQ_STP_UDMA_WAIT_TC_COMP:
+		return sci_stp_request_udma_general_frame_handler(ireq,
+								       frame_index);
+
+	case SCI_REQ_STP_UDMA_WAIT_D2H:
+		/* Use the general frame handler to copy the resposne data */
+		status = sci_stp_request_udma_general_frame_handler(ireq, frame_index);
+
+		if (status != SCI_SUCCESS)
+			return status;
+
+		ireq->scu_status = SCU_TASK_DONE_CHECK_RESPONSE;
+		ireq->sci_status = SCI_FAILURE_IO_RESPONSE_VALID;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		return SCI_SUCCESS;
+
+	case SCI_REQ_STP_NON_DATA_WAIT_D2H: {
+		struct dev_to_host_fis *frame_header;
+		u32 *frame_buffer;
+
+		status = sci_unsolicited_frame_control_get_header(&ihost->uf_control,
+								       frame_index,
+								       (void **)&frame_header);
+
+		if (status != SCI_SUCCESS) {
+			dev_err(&ihost->pdev->dev,
+				"%s: SCIC IO Request 0x%p could not get frame "
+				"header for frame index %d, status %x\n",
+				__func__,
+				stp_req,
+				frame_index,
+				status);
+
+			return status;
+		}
+
+		switch (frame_header->fis_type) {
+		case FIS_REGD2H:
+			sci_unsolicited_frame_control_get_buffer(&ihost->uf_control,
+								      frame_index,
+								      (void **)&frame_buffer);
+
+			sci_controller_copy_sata_response(&ireq->stp.rsp,
+							       frame_header,
+							       frame_buffer);
+
+			/* The command has completed with error */
+			ireq->scu_status = SCU_TASK_DONE_CHECK_RESPONSE;
+			ireq->sci_status = SCI_FAILURE_IO_RESPONSE_VALID;
+			break;
+
+		default:
+			dev_warn(&ihost->pdev->dev,
+				 "%s: IO Request:0x%p Frame Id:%d protocol "
+				  "violation occurred\n", __func__, stp_req,
+				  frame_index);
+
+			ireq->scu_status = SCU_TASK_DONE_UNEXP_FIS;
+			ireq->sci_status = SCI_FAILURE_PROTOCOL_VIOLATION;
+			break;
+		}
+
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+
+		/* Frame has been decoded return it to the controller */
+		sci_controller_release_frame(ihost, frame_index);
+
+		return status;
+	}
+
+	case SCI_REQ_STP_PIO_WAIT_FRAME: {
+		struct sas_task *task = isci_request_access_task(ireq);
+		struct dev_to_host_fis *frame_header;
+		u32 *frame_buffer;
+
+		status = sci_unsolicited_frame_control_get_header(&ihost->uf_control,
+								       frame_index,
+								       (void **)&frame_header);
+
+		if (status != SCI_SUCCESS) {
+			dev_err(&ihost->pdev->dev,
+				"%s: SCIC IO Request 0x%p could not get frame "
+				"header for frame index %d, status %x\n",
+				__func__, stp_req, frame_index, status);
+			return status;
+		}
+
+		switch (frame_header->fis_type) {
+		case FIS_PIO_SETUP:
+			/* Get from the frame buffer the PIO Setup Data */
+			sci_unsolicited_frame_control_get_buffer(&ihost->uf_control,
+								      frame_index,
+								      (void **)&frame_buffer);
+
+			/* Get the data from the PIO Setup The SCU Hardware
+			 * returns first word in the frame_header and the rest
+			 * of the data is in the frame buffer so we need to
+			 * back up one dword
+			 */
+
+			/* transfer_count: first 16bits in the 4th dword */
+			stp_req->pio_len = frame_buffer[3] & 0xffff;
+
+			/* status: 4th byte in the 3rd dword */
+			stp_req->status = (frame_buffer[2] >> 24) & 0xff;
+
+			sci_controller_copy_sata_response(&ireq->stp.rsp,
+							       frame_header,
+							       frame_buffer);
+
+			ireq->stp.rsp.status = stp_req->status;
+
+			/* The next state is dependent on whether the
+			 * request was PIO Data-in or Data out
+			 */
+			if (task->data_dir == DMA_FROM_DEVICE) {
+				sci_change_state(&ireq->sm, SCI_REQ_STP_PIO_DATA_IN);
+			} else if (task->data_dir == DMA_TO_DEVICE) {
+				/* Transmit data */
+				status = sci_stp_request_pio_data_out_transmit_data(ireq);
+				if (status != SCI_SUCCESS)
+					break;
+				sci_change_state(&ireq->sm, SCI_REQ_STP_PIO_DATA_OUT);
+			}
+			break;
+
+		case FIS_SETDEVBITS:
+			sci_change_state(&ireq->sm, SCI_REQ_STP_PIO_WAIT_FRAME);
+			break;
+
+		case FIS_REGD2H:
+			if (frame_header->status & ATA_BUSY) {
+				/*
+				 * Now why is the drive sending a D2H Register
+				 * FIS when it is still busy?  Do nothing since
+				 * we are still in the right state.
+				 */
+				dev_dbg(&ihost->pdev->dev,
+					"%s: SCIC PIO Request 0x%p received "
+					"D2H Register FIS with BSY status "
+					"0x%x\n",
+					__func__,
+					stp_req,
+					frame_header->status);
+				break;
+			}
+
+			sci_unsolicited_frame_control_get_buffer(&ihost->uf_control,
+								      frame_index,
+								      (void **)&frame_buffer);
+
+			sci_controller_copy_sata_response(&ireq->stp.req,
+							       frame_header,
+							       frame_buffer);
+
+			ireq->scu_status = SCU_TASK_DONE_CHECK_RESPONSE;
+			ireq->sci_status = SCI_FAILURE_IO_RESPONSE_VALID;
+			sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+			break;
+
+		default:
+			/* FIXME: what do we do here? */
+			break;
+		}
+
+		/* Frame is decoded return it to the controller */
+		sci_controller_release_frame(ihost, frame_index);
+
+		return status;
+	}
+
+	case SCI_REQ_STP_PIO_DATA_IN: {
+		struct dev_to_host_fis *frame_header;
+		struct sata_fis_data *frame_buffer;
+
+		status = sci_unsolicited_frame_control_get_header(&ihost->uf_control,
+								       frame_index,
+								       (void **)&frame_header);
+
+		if (status != SCI_SUCCESS) {
+			dev_err(&ihost->pdev->dev,
+				"%s: SCIC IO Request 0x%p could not get frame "
+				"header for frame index %d, status %x\n",
+				__func__,
+				stp_req,
+				frame_index,
+				status);
+			return status;
+		}
+
+		if (frame_header->fis_type != FIS_DATA) {
+			dev_err(&ihost->pdev->dev,
+				"%s: SCIC PIO Request 0x%p received frame %d "
+				"with fis type 0x%02x when expecting a data "
+				"fis.\n",
+				__func__,
+				stp_req,
+				frame_index,
+				frame_header->fis_type);
+
+			ireq->scu_status = SCU_TASK_DONE_GOOD;
+			ireq->sci_status = SCI_FAILURE_IO_REQUIRES_SCSI_ABORT;
+			sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+
+			/* Frame is decoded return it to the controller */
+			sci_controller_release_frame(ihost, frame_index);
+			return status;
+		}
+
+		if (stp_req->sgl.index < 0) {
+			ireq->saved_rx_frame_index = frame_index;
+			stp_req->pio_len = 0;
+		} else {
+			sci_unsolicited_frame_control_get_buffer(&ihost->uf_control,
+								      frame_index,
+								      (void **)&frame_buffer);
+
+			status = sci_stp_request_pio_data_in_copy_data(stp_req,
+									    (u8 *)frame_buffer);
+
+			/* Frame is decoded return it to the controller */
+			sci_controller_release_frame(ihost, frame_index);
+		}
+
+		/* Check for the end of the transfer, are there more
+		 * bytes remaining for this data transfer
+		 */
+		if (status != SCI_SUCCESS || stp_req->pio_len != 0)
+			return status;
+
+		if ((stp_req->status & ATA_BUSY) == 0) {
+			ireq->scu_status = SCU_TASK_DONE_CHECK_RESPONSE;
+			ireq->sci_status = SCI_FAILURE_IO_RESPONSE_VALID;
+			sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		} else {
+			sci_change_state(&ireq->sm, SCI_REQ_STP_PIO_WAIT_FRAME);
+		}
+		return status;
+	}
+
+	case SCI_REQ_STP_SOFT_RESET_WAIT_D2H: {
+		struct dev_to_host_fis *frame_header;
+		u32 *frame_buffer;
+
+		status = sci_unsolicited_frame_control_get_header(&ihost->uf_control,
+								       frame_index,
+								       (void **)&frame_header);
+		if (status != SCI_SUCCESS) {
+			dev_err(&ihost->pdev->dev,
+				"%s: SCIC IO Request 0x%p could not get frame "
+				"header for frame index %d, status %x\n",
+				__func__,
+				stp_req,
+				frame_index,
+				status);
+			return status;
+		}
+
+		switch (frame_header->fis_type) {
+		case FIS_REGD2H:
+			sci_unsolicited_frame_control_get_buffer(&ihost->uf_control,
+								      frame_index,
+								      (void **)&frame_buffer);
+
+			sci_controller_copy_sata_response(&ireq->stp.rsp,
+							       frame_header,
+							       frame_buffer);
+
+			/* The command has completed with error */
+			ireq->scu_status = SCU_TASK_DONE_CHECK_RESPONSE;
+			ireq->sci_status = SCI_FAILURE_IO_RESPONSE_VALID;
+			break;
+
+		default:
+			dev_warn(&ihost->pdev->dev,
+				 "%s: IO Request:0x%p Frame Id:%d protocol "
+				 "violation occurred\n",
+				 __func__,
+				 stp_req,
+				 frame_index);
+
+			ireq->scu_status = SCU_TASK_DONE_UNEXP_FIS;
+			ireq->sci_status = SCI_FAILURE_PROTOCOL_VIOLATION;
+			break;
+		}
+
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+
+		/* Frame has been decoded return it to the controller */
+		sci_controller_release_frame(ihost, frame_index);
+
+		return status;
+	}
+	case SCI_REQ_ABORTING:
+		/*
+		 * TODO: Is it even possible to get an unsolicited frame in the
+		 * aborting state?
+		 */
+		sci_controller_release_frame(ihost, frame_index);
+		return SCI_SUCCESS;
+
+	default:
+		dev_warn(&ihost->pdev->dev,
+			 "%s: SCIC IO Request given unexpected frame %x while "
+			 "in state %d\n",
+			 __func__,
+			 frame_index,
+			 state);
+
+		sci_controller_release_frame(ihost, frame_index);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+static enum sci_status stp_request_udma_await_tc_event(struct isci_request *ireq,
+						       u32 completion_code)
+{
+	enum sci_status status = SCI_SUCCESS;
+
+	switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+		ireq->scu_status = SCU_TASK_DONE_GOOD;
+		ireq->sci_status = SCI_SUCCESS;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		break;
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_FIS):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR):
+		/* We must check ther response buffer to see if the D2H
+		 * Register FIS was received before we got the TC
+		 * completion.
+		 */
+		if (ireq->stp.rsp.fis_type == FIS_REGD2H) {
+			sci_remote_device_suspend(ireq->target_device,
+				SCU_EVENT_SPECIFIC(SCU_NORMALIZE_COMPLETION_STATUS(completion_code)));
+
+			ireq->scu_status = SCU_TASK_DONE_CHECK_RESPONSE;
+			ireq->sci_status = SCI_FAILURE_IO_RESPONSE_VALID;
+			sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		} else {
+			/* If we have an error completion status for the
+			 * TC then we can expect a D2H register FIS from
+			 * the device so we must change state to wait
+			 * for it
+			 */
+			sci_change_state(&ireq->sm, SCI_REQ_STP_UDMA_WAIT_D2H);
+		}
+		break;
+
+	/* TODO Check to see if any of these completion status need to
+	 * wait for the device to host register fis.
+	 */
+	/* TODO We can retry the command for SCU_TASK_DONE_CMD_LL_R_ERR
+	 * - this comes only for B0
+	 */
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_INV_FIS_LEN):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_R_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CMD_LL_R_ERR):
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CRC_ERR):
+		sci_remote_device_suspend(ireq->target_device,
+			SCU_EVENT_SPECIFIC(SCU_NORMALIZE_COMPLETION_STATUS(completion_code)));
+	/* Fall through to the default case */
+	default:
+		/* All other completion status cause the IO to be complete. */
+		ireq->scu_status = SCU_NORMALIZE_COMPLETION_STATUS(completion_code);
+		ireq->sci_status = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		break;
+	}
+
+	return status;
+}
+
+static enum sci_status
+stp_request_soft_reset_await_h2d_asserted_tc_event(struct isci_request *ireq,
+						   u32 completion_code)
+{
+	switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+		ireq->scu_status = SCU_TASK_DONE_GOOD;
+		ireq->sci_status = SCI_SUCCESS;
+		sci_change_state(&ireq->sm, SCI_REQ_STP_SOFT_RESET_WAIT_H2D_DIAG);
+		break;
+
+	default:
+		/*
+		 * All other completion status cause the IO to be complete.
+		 * If a NAK was received, then it is up to the user to retry
+		 * the request.
+		 */
+		ireq->scu_status = SCU_NORMALIZE_COMPLETION_STATUS(completion_code);
+		ireq->sci_status = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		break;
+	}
+
+	return SCI_SUCCESS;
+}
+
+static enum sci_status
+stp_request_soft_reset_await_h2d_diagnostic_tc_event(struct isci_request *ireq,
+						     u32 completion_code)
+{
+	switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+		ireq->scu_status = SCU_TASK_DONE_GOOD;
+		ireq->sci_status = SCI_SUCCESS;
+		sci_change_state(&ireq->sm, SCI_REQ_STP_SOFT_RESET_WAIT_D2H);
+		break;
+
+	default:
+		/* All other completion status cause the IO to be complete.  If
+		 * a NAK was received, then it is up to the user to retry the
+		 * request.
+		 */
+		ireq->scu_status = SCU_NORMALIZE_COMPLETION_STATUS(completion_code);
+		ireq->sci_status = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR;
+		sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);
+		break;
+	}
+
+	return SCI_SUCCESS;
+}
+
+enum sci_status
+sci_io_request_tc_completion(struct isci_request *ireq,
+				  u32 completion_code)
+{
+	enum sci_base_request_states state;
+	struct isci_host *ihost = ireq->owning_controller;
+
+	state = ireq->sm.current_state_id;
+
+	switch (state) {
+	case SCI_REQ_STARTED:
+		return request_started_state_tc_event(ireq, completion_code);
+
+	case SCI_REQ_TASK_WAIT_TC_COMP:
+		return ssp_task_request_await_tc_event(ireq,
+						       completion_code);
+
+	case SCI_REQ_SMP_WAIT_RESP:
+		return smp_request_await_response_tc_event(ireq,
+							   completion_code);
+
+	case SCI_REQ_SMP_WAIT_TC_COMP:
+		return smp_request_await_tc_event(ireq, completion_code);
+
+	case SCI_REQ_STP_UDMA_WAIT_TC_COMP:
+		return stp_request_udma_await_tc_event(ireq,
+						       completion_code);
+
+	case SCI_REQ_STP_NON_DATA_WAIT_H2D:
+		return stp_request_non_data_await_h2d_tc_event(ireq,
+							       completion_code);
+
+	case SCI_REQ_STP_PIO_WAIT_H2D:
+		return stp_request_pio_await_h2d_completion_tc_event(ireq,
+								     completion_code);
+
+	case SCI_REQ_STP_PIO_DATA_OUT:
+		return pio_data_out_tx_done_tc_event(ireq, completion_code);
+
+	case SCI_REQ_STP_SOFT_RESET_WAIT_H2D_ASSERTED:
+		return stp_request_soft_reset_await_h2d_asserted_tc_event(ireq,
+									  completion_code);
+
+	case SCI_REQ_STP_SOFT_RESET_WAIT_H2D_DIAG:
+		return stp_request_soft_reset_await_h2d_diagnostic_tc_event(ireq,
+									    completion_code);
+
+	case SCI_REQ_ABORTING:
+		return request_aborting_state_tc_event(ireq,
+						       completion_code);
+
+	default:
+		dev_warn(&ihost->pdev->dev,
+			 "%s: SCIC IO Request given task completion "
+			 "notification %x while in wrong state %d\n",
+			 __func__,
+			 completion_code,
+			 state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+/**
+ * isci_request_process_response_iu() - This function sets the status and
+ *    response iu, in the task struct, from the request object for the upper
+ *    layer driver.
+ * @sas_task: This parameter is the task struct from the upper layer driver.
+ * @resp_iu: This parameter points to the response iu of the completed request.
+ * @dev: This parameter specifies the linux device struct.
+ *
+ * none.
+ */
+static void isci_request_process_response_iu(
+	struct sas_task *task,
+	struct ssp_response_iu *resp_iu,
+	struct device *dev)
+{
+	dev_dbg(dev,
+		"%s: resp_iu = %p "
+		"resp_iu->status = 0x%x,\nresp_iu->datapres = %d "
+		"resp_iu->response_data_len = %x, "
+		"resp_iu->sense_data_len = %x\nrepsonse data: ",
+		__func__,
+		resp_iu,
+		resp_iu->status,
+		resp_iu->datapres,
+		resp_iu->response_data_len,
+		resp_iu->sense_data_len);
+
+	task->task_status.stat = resp_iu->status;
+
+	/* libsas updates the task status fields based on the response iu. */
+	sas_ssp_task_response(dev, task, resp_iu);
+}
+
+/**
+ * isci_request_set_open_reject_status() - This function prepares the I/O
+ *    completion for OPEN_REJECT conditions.
+ * @request: This parameter is the completed isci_request object.
+ * @response_ptr: This parameter specifies the service response for the I/O.
+ * @status_ptr: This parameter specifies the exec status for the I/O.
+ * @complete_to_host_ptr: This parameter specifies the action to be taken by
+ *    the LLDD with respect to completing this request or forcing an abort
+ *    condition on the I/O.
+ * @open_rej_reason: This parameter specifies the encoded reason for the
+ *    abandon-class reject.
+ *
+ * none.
+ */
+static void isci_request_set_open_reject_status(
+	struct isci_request *request,
+	struct sas_task *task,
+	enum service_response *response_ptr,
+	enum exec_status *status_ptr,
+	enum isci_completion_selection *complete_to_host_ptr,
+	enum sas_open_rej_reason open_rej_reason)
+{
+	/* Task in the target is done. */
+	set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+	*response_ptr                     = SAS_TASK_UNDELIVERED;
+	*status_ptr                       = SAS_OPEN_REJECT;
+	*complete_to_host_ptr             = isci_perform_normal_io_completion;
+	task->task_status.open_rej_reason = open_rej_reason;
+}
+
+/**
+ * isci_request_handle_controller_specific_errors() - This function decodes
+ *    controller-specific I/O completion error conditions.
+ * @request: This parameter is the completed isci_request object.
+ * @response_ptr: This parameter specifies the service response for the I/O.
+ * @status_ptr: This parameter specifies the exec status for the I/O.
+ * @complete_to_host_ptr: This parameter specifies the action to be taken by
+ *    the LLDD with respect to completing this request or forcing an abort
+ *    condition on the I/O.
+ *
+ * none.
+ */
+static void isci_request_handle_controller_specific_errors(
+	struct isci_remote_device *idev,
+	struct isci_request *request,
+	struct sas_task *task,
+	enum service_response *response_ptr,
+	enum exec_status *status_ptr,
+	enum isci_completion_selection *complete_to_host_ptr)
+{
+	unsigned int cstatus;
+
+	cstatus = request->scu_status;
+
+	dev_dbg(&request->isci_host->pdev->dev,
+		"%s: %p SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR "
+		"- controller status = 0x%x\n",
+		__func__, request, cstatus);
+
+	/* Decode the controller-specific errors; most
+	 * important is to recognize those conditions in which
+	 * the target may still have a task outstanding that
+	 * must be aborted.
+	 *
+	 * Note that there are SCU completion codes being
+	 * named in the decode below for which SCIC has already
+	 * done work to handle them in a way other than as
+	 * a controller-specific completion code; these are left
+	 * in the decode below for completeness sake.
+	 */
+	switch (cstatus) {
+	case SCU_TASK_DONE_DMASETUP_DIRERR:
+	/* Also SCU_TASK_DONE_SMP_FRM_TYPE_ERR: */
+	case SCU_TASK_DONE_XFERCNT_ERR:
+		/* Also SCU_TASK_DONE_SMP_UFI_ERR: */
+		if (task->task_proto == SAS_PROTOCOL_SMP) {
+			/* SCU_TASK_DONE_SMP_UFI_ERR == Task Done. */
+			*response_ptr = SAS_TASK_COMPLETE;
+
+			/* See if the device has been/is being stopped. Note
+			 * that we ignore the quiesce state, since we are
+			 * concerned about the actual device state.
+			 */
+			if (!idev)
+				*status_ptr = SAS_DEVICE_UNKNOWN;
+			else
+				*status_ptr = SAS_ABORTED_TASK;
+
+			set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+
+			*complete_to_host_ptr =
+				isci_perform_normal_io_completion;
+		} else {
+			/* Task in the target is not done. */
+			*response_ptr = SAS_TASK_UNDELIVERED;
+
+			if (!idev)
+				*status_ptr = SAS_DEVICE_UNKNOWN;
+			else
+				*status_ptr = SAM_STAT_TASK_ABORTED;
+
+			clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+
+			*complete_to_host_ptr =
+				isci_perform_error_io_completion;
+		}
+
+		break;
+
+	case SCU_TASK_DONE_CRC_ERR:
+	case SCU_TASK_DONE_NAK_CMD_ERR:
+	case SCU_TASK_DONE_EXCESS_DATA:
+	case SCU_TASK_DONE_UNEXP_FIS:
+	/* Also SCU_TASK_DONE_UNEXP_RESP: */
+	case SCU_TASK_DONE_VIIT_ENTRY_NV:       /* TODO - conditions? */
+	case SCU_TASK_DONE_IIT_ENTRY_NV:        /* TODO - conditions? */
+	case SCU_TASK_DONE_RNCNV_OUTBOUND:      /* TODO - conditions? */
+		/* These are conditions in which the target
+		 * has completed the task, so that no cleanup
+		 * is necessary.
+		 */
+		*response_ptr = SAS_TASK_COMPLETE;
+
+		/* See if the device has been/is being stopped. Note
+		 * that we ignore the quiesce state, since we are
+		 * concerned about the actual device state.
+		 */
+		if (!idev)
+			*status_ptr = SAS_DEVICE_UNKNOWN;
+		else
+			*status_ptr = SAS_ABORTED_TASK;
+
+		set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+
+		*complete_to_host_ptr = isci_perform_normal_io_completion;
+		break;
+
+
+	/* Note that the only open reject completion codes seen here will be
+	 * abandon-class codes; all others are automatically retried in the SCU.
+	 */
+	case SCU_TASK_OPEN_REJECT_WRONG_DESTINATION:
+
+		isci_request_set_open_reject_status(
+			request, task, response_ptr, status_ptr,
+			complete_to_host_ptr, SAS_OREJ_WRONG_DEST);
+		break;
+
+	case SCU_TASK_OPEN_REJECT_ZONE_VIOLATION:
+
+		/* Note - the return of AB0 will change when
+		 * libsas implements detection of zone violations.
+		 */
+		isci_request_set_open_reject_status(
+			request, task, response_ptr, status_ptr,
+			complete_to_host_ptr, SAS_OREJ_RESV_AB0);
+		break;
+
+	case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1:
+
+		isci_request_set_open_reject_status(
+			request, task, response_ptr, status_ptr,
+			complete_to_host_ptr, SAS_OREJ_RESV_AB1);
+		break;
+
+	case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2:
+
+		isci_request_set_open_reject_status(
+			request, task, response_ptr, status_ptr,
+			complete_to_host_ptr, SAS_OREJ_RESV_AB2);
+		break;
+
+	case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3:
+
+		isci_request_set_open_reject_status(
+			request, task, response_ptr, status_ptr,
+			complete_to_host_ptr, SAS_OREJ_RESV_AB3);
+		break;
+
+	case SCU_TASK_OPEN_REJECT_BAD_DESTINATION:
+
+		isci_request_set_open_reject_status(
+			request, task, response_ptr, status_ptr,
+			complete_to_host_ptr, SAS_OREJ_BAD_DEST);
+		break;
+
+	case SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY:
+
+		isci_request_set_open_reject_status(
+			request, task, response_ptr, status_ptr,
+			complete_to_host_ptr, SAS_OREJ_STP_NORES);
+		break;
+
+	case SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED:
+
+		isci_request_set_open_reject_status(
+			request, task, response_ptr, status_ptr,
+			complete_to_host_ptr, SAS_OREJ_EPROTO);
+		break;
+
+	case SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED:
+
+		isci_request_set_open_reject_status(
+			request, task, response_ptr, status_ptr,
+			complete_to_host_ptr, SAS_OREJ_CONN_RATE);
+		break;
+
+	case SCU_TASK_DONE_LL_R_ERR:
+	/* Also SCU_TASK_DONE_ACK_NAK_TO: */
+	case SCU_TASK_DONE_LL_PERR:
+	case SCU_TASK_DONE_LL_SY_TERM:
+	/* Also SCU_TASK_DONE_NAK_ERR:*/
+	case SCU_TASK_DONE_LL_LF_TERM:
+	/* Also SCU_TASK_DONE_DATA_LEN_ERR: */
+	case SCU_TASK_DONE_LL_ABORT_ERR:
+	case SCU_TASK_DONE_SEQ_INV_TYPE:
+	/* Also SCU_TASK_DONE_UNEXP_XR: */
+	case SCU_TASK_DONE_XR_IU_LEN_ERR:
+	case SCU_TASK_DONE_INV_FIS_LEN:
+	/* Also SCU_TASK_DONE_XR_WD_LEN: */
+	case SCU_TASK_DONE_SDMA_ERR:
+	case SCU_TASK_DONE_OFFSET_ERR:
+	case SCU_TASK_DONE_MAX_PLD_ERR:
+	case SCU_TASK_DONE_LF_ERR:
+	case SCU_TASK_DONE_SMP_RESP_TO_ERR:  /* Escalate to dev reset? */
+	case SCU_TASK_DONE_SMP_LL_RX_ERR:
+	case SCU_TASK_DONE_UNEXP_DATA:
+	case SCU_TASK_DONE_UNEXP_SDBFIS:
+	case SCU_TASK_DONE_REG_ERR:
+	case SCU_TASK_DONE_SDB_ERR:
+	case SCU_TASK_DONE_TASK_ABORT:
+	default:
+		/* Task in the target is not done. */
+		*response_ptr = SAS_TASK_UNDELIVERED;
+		*status_ptr = SAM_STAT_TASK_ABORTED;
+
+		if (task->task_proto == SAS_PROTOCOL_SMP) {
+			set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+
+			*complete_to_host_ptr = isci_perform_normal_io_completion;
+		} else {
+			clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+
+			*complete_to_host_ptr = isci_perform_error_io_completion;
+		}
+		break;
+	}
+}
+
+/**
+ * isci_task_save_for_upper_layer_completion() - This function saves the
+ *    request for later completion to the upper layer driver.
+ * @host: This parameter is a pointer to the host on which the the request
+ *    should be queued (either as an error or success).
+ * @request: This parameter is the completed request.
+ * @response: This parameter is the response code for the completed task.
+ * @status: This parameter is the status code for the completed task.
+ *
+ * none.
+ */
+static void isci_task_save_for_upper_layer_completion(
+	struct isci_host *host,
+	struct isci_request *request,
+	enum service_response response,
+	enum exec_status status,
+	enum isci_completion_selection task_notification_selection)
+{
+	struct sas_task *task = isci_request_access_task(request);
+
+	task_notification_selection
+		= isci_task_set_completion_status(task, response, status,
+						  task_notification_selection);
+
+	/* Tasks aborted specifically by a call to the lldd_abort_task
+	 * function should not be completed to the host in the regular path.
+	 */
+	switch (task_notification_selection) {
+
+	case isci_perform_normal_io_completion:
+
+		/* Normal notification (task_done) */
+		dev_dbg(&host->pdev->dev,
+			"%s: Normal - task = %p, response=%d (%d), status=%d (%d)\n",
+			__func__,
+			task,
+			task->task_status.resp, response,
+			task->task_status.stat, status);
+		/* Add to the completed list. */
+		list_add(&request->completed_node,
+			 &host->requests_to_complete);
+
+		/* Take the request off the device's pending request list. */
+		list_del_init(&request->dev_node);
+		break;
+
+	case isci_perform_aborted_io_completion:
+		/* No notification to libsas because this request is
+		 * already in the abort path.
+		 */
+		dev_dbg(&host->pdev->dev,
+			 "%s: Aborted - task = %p, response=%d (%d), status=%d (%d)\n",
+			 __func__,
+			 task,
+			 task->task_status.resp, response,
+			 task->task_status.stat, status);
+
+		/* Wake up whatever process was waiting for this
+		 * request to complete.
+		 */
+		WARN_ON(request->io_request_completion == NULL);
+
+		if (request->io_request_completion != NULL) {
+
+			/* Signal whoever is waiting that this
+			* request is complete.
+			*/
+			complete(request->io_request_completion);
+		}
+		break;
+
+	case isci_perform_error_io_completion:
+		/* Use sas_task_abort */
+		dev_dbg(&host->pdev->dev,
+			 "%s: Error - task = %p, response=%d (%d), status=%d (%d)\n",
+			 __func__,
+			 task,
+			 task->task_status.resp, response,
+			 task->task_status.stat, status);
+		/* Add to the aborted list. */
+		list_add(&request->completed_node,
+			 &host->requests_to_errorback);
+		break;
+
+	default:
+		dev_dbg(&host->pdev->dev,
+			 "%s: Unknown - task = %p, response=%d (%d), status=%d (%d)\n",
+			 __func__,
+			 task,
+			 task->task_status.resp, response,
+			 task->task_status.stat, status);
+
+		/* Add to the error to libsas list. */
+		list_add(&request->completed_node,
+			 &host->requests_to_errorback);
+		break;
+	}
+}
+
+static void isci_request_process_stp_response(struct sas_task *task,
+					      void *response_buffer)
+{
+	struct dev_to_host_fis *d2h_reg_fis = response_buffer;
+	struct task_status_struct *ts = &task->task_status;
+	struct ata_task_resp *resp = (void *)&ts->buf[0];
+
+	resp->frame_len = le16_to_cpu(*(__le16 *)(response_buffer + 6));
+	memcpy(&resp->ending_fis[0], response_buffer + 16, 24);
+	ts->buf_valid_size = sizeof(*resp);
+
+	/**
+	 * If the device fault bit is set in the status register, then
+	 * set the sense data and return.
+	 */
+	if (d2h_reg_fis->status & ATA_DF)
+		ts->stat = SAS_PROTO_RESPONSE;
+	else
+		ts->stat = SAM_STAT_GOOD;
+
+	ts->resp = SAS_TASK_COMPLETE;
+}
+
+static void isci_request_io_request_complete(struct isci_host *ihost,
+					     struct isci_request *request,
+					     enum sci_io_status completion_status)
+{
+	struct sas_task *task = isci_request_access_task(request);
+	struct ssp_response_iu *resp_iu;
+	void *resp_buf;
+	unsigned long task_flags;
+	struct isci_remote_device *idev = isci_lookup_device(task->dev);
+	enum service_response response       = SAS_TASK_UNDELIVERED;
+	enum exec_status status         = SAS_ABORTED_TASK;
+	enum isci_request_status request_status;
+	enum isci_completion_selection complete_to_host
+		= isci_perform_normal_io_completion;
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: request = %p, task = %p,\n"
+		"task->data_dir = %d completion_status = 0x%x\n",
+		__func__,
+		request,
+		task,
+		task->data_dir,
+		completion_status);
+
+	spin_lock(&request->state_lock);
+	request_status = request->status;
+
+	/* Decode the request status.  Note that if the request has been
+	 * aborted by a task management function, we don't care
+	 * what the status is.
+	 */
+	switch (request_status) {
+
+	case aborted:
+		/* "aborted" indicates that the request was aborted by a task
+		 * management function, since once a task management request is
+		 * perfomed by the device, the request only completes because
+		 * of the subsequent driver terminate.
+		 *
+		 * Aborted also means an external thread is explicitly managing
+		 * this request, so that we do not complete it up the stack.
+		 *
+		 * The target is still there (since the TMF was successful).
+		 */
+		set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+		response = SAS_TASK_COMPLETE;
+
+		/* See if the device has been/is being stopped. Note
+		 * that we ignore the quiesce state, since we are
+		 * concerned about the actual device state.
+		 */
+		if (!idev)
+			status = SAS_DEVICE_UNKNOWN;
+		else
+			status = SAS_ABORTED_TASK;
+
+		complete_to_host = isci_perform_aborted_io_completion;
+		/* This was an aborted request. */
+
+		spin_unlock(&request->state_lock);
+		break;
+
+	case aborting:
+		/* aborting means that the task management function tried and
+		 * failed to abort the request. We need to note the request
+		 * as SAS_TASK_UNDELIVERED, so that the scsi mid layer marks the
+		 * target as down.
+		 *
+		 * Aborting also means an external thread is explicitly managing
+		 * this request, so that we do not complete it up the stack.
+		 */
+		set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+		response = SAS_TASK_UNDELIVERED;
+
+		if (!idev)
+			/* The device has been /is being stopped. Note that
+			 * we ignore the quiesce state, since we are
+			 * concerned about the actual device state.
+			 */
+			status = SAS_DEVICE_UNKNOWN;
+		else
+			status = SAS_PHY_DOWN;
+
+		complete_to_host = isci_perform_aborted_io_completion;
+
+		/* This was an aborted request. */
+
+		spin_unlock(&request->state_lock);
+		break;
+
+	case terminating:
+
+		/* This was an terminated request.  This happens when
+		 * the I/O is being terminated because of an action on
+		 * the device (reset, tear down, etc.), and the I/O needs
+		 * to be completed up the stack.
+		 */
+		set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+		response = SAS_TASK_UNDELIVERED;
+
+		/* See if the device has been/is being stopped. Note
+		 * that we ignore the quiesce state, since we are
+		 * concerned about the actual device state.
+		 */
+		if (!idev)
+			status = SAS_DEVICE_UNKNOWN;
+		else
+			status = SAS_ABORTED_TASK;
+
+		complete_to_host = isci_perform_aborted_io_completion;
+
+		/* This was a terminated request. */
+
+		spin_unlock(&request->state_lock);
+		break;
+
+	case dead:
+		/* This was a terminated request that timed-out during the
+		 * termination process.  There is no task to complete to
+		 * libsas.
+		 */
+		complete_to_host = isci_perform_normal_io_completion;
+		spin_unlock(&request->state_lock);
+		break;
+
+	default:
+
+		/* The request is done from an SCU HW perspective. */
+		request->status = completed;
+
+		spin_unlock(&request->state_lock);
+
+		/* This is an active request being completed from the core. */
+		switch (completion_status) {
+
+		case SCI_IO_FAILURE_RESPONSE_VALID:
+			dev_dbg(&ihost->pdev->dev,
+				"%s: SCI_IO_FAILURE_RESPONSE_VALID (%p/%p)\n",
+				__func__,
+				request,
+				task);
+
+			if (sas_protocol_ata(task->task_proto)) {
+				resp_buf = &request->stp.rsp;
+				isci_request_process_stp_response(task,
+								  resp_buf);
+			} else if (SAS_PROTOCOL_SSP == task->task_proto) {
+
+				/* crack the iu response buffer. */
+				resp_iu = &request->ssp.rsp;
+				isci_request_process_response_iu(task, resp_iu,
+								 &ihost->pdev->dev);
+
+			} else if (SAS_PROTOCOL_SMP == task->task_proto) {
+
+				dev_err(&ihost->pdev->dev,
+					"%s: SCI_IO_FAILURE_RESPONSE_VALID: "
+					"SAS_PROTOCOL_SMP protocol\n",
+					__func__);
+
+			} else
+				dev_err(&ihost->pdev->dev,
+					"%s: unknown protocol\n", __func__);
+
+			/* use the task status set in the task struct by the
+			 * isci_request_process_response_iu call.
+			 */
+			set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+			response = task->task_status.resp;
+			status = task->task_status.stat;
+			break;
+
+		case SCI_IO_SUCCESS:
+		case SCI_IO_SUCCESS_IO_DONE_EARLY:
+
+			response = SAS_TASK_COMPLETE;
+			status   = SAM_STAT_GOOD;
+			set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+
+			if (task->task_proto == SAS_PROTOCOL_SMP) {
+				void *rsp = &request->smp.rsp;
+
+				dev_dbg(&ihost->pdev->dev,
+					"%s: SMP protocol completion\n",
+					__func__);
+
+				sg_copy_from_buffer(
+					&task->smp_task.smp_resp, 1,
+					rsp, sizeof(struct smp_resp));
+			} else if (completion_status
+				   == SCI_IO_SUCCESS_IO_DONE_EARLY) {
+
+				/* This was an SSP / STP / SATA transfer.
+				 * There is a possibility that less data than
+				 * the maximum was transferred.
+				 */
+				u32 transferred_length = sci_req_tx_bytes(request);
+
+				task->task_status.residual
+					= task->total_xfer_len - transferred_length;
+
+				/* If there were residual bytes, call this an
+				 * underrun.
+				 */
+				if (task->task_status.residual != 0)
+					status = SAS_DATA_UNDERRUN;
+
+				dev_dbg(&ihost->pdev->dev,
+					"%s: SCI_IO_SUCCESS_IO_DONE_EARLY %d\n",
+					__func__,
+					status);
+
+			} else
+				dev_dbg(&ihost->pdev->dev,
+					"%s: SCI_IO_SUCCESS\n",
+					__func__);
+
+			break;
+
+		case SCI_IO_FAILURE_TERMINATED:
+			dev_dbg(&ihost->pdev->dev,
+				"%s: SCI_IO_FAILURE_TERMINATED (%p/%p)\n",
+				__func__,
+				request,
+				task);
+
+			/* The request was terminated explicitly.  No handling
+			 * is needed in the SCSI error handler path.
+			 */
+			set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+			response = SAS_TASK_UNDELIVERED;
+
+			/* See if the device has been/is being stopped. Note
+			 * that we ignore the quiesce state, since we are
+			 * concerned about the actual device state.
+			 */
+			if (!idev)
+				status = SAS_DEVICE_UNKNOWN;
+			else
+				status = SAS_ABORTED_TASK;
+
+			complete_to_host = isci_perform_normal_io_completion;
+			break;
+
+		case SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR:
+
+			isci_request_handle_controller_specific_errors(
+				idev, request, task, &response, &status,
+				&complete_to_host);
+
+			break;
+
+		case SCI_IO_FAILURE_REMOTE_DEVICE_RESET_REQUIRED:
+			/* This is a special case, in that the I/O completion
+			 * is telling us that the device needs a reset.
+			 * In order for the device reset condition to be
+			 * noticed, the I/O has to be handled in the error
+			 * handler.  Set the reset flag and cause the
+			 * SCSI error thread to be scheduled.
+			 */
+			spin_lock_irqsave(&task->task_state_lock, task_flags);
+			task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
+			spin_unlock_irqrestore(&task->task_state_lock, task_flags);
+
+			/* Fail the I/O. */
+			response = SAS_TASK_UNDELIVERED;
+			status = SAM_STAT_TASK_ABORTED;
+
+			complete_to_host = isci_perform_error_io_completion;
+			clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+			break;
+
+		case SCI_FAILURE_RETRY_REQUIRED:
+
+			/* Fail the I/O so it can be retried. */
+			response = SAS_TASK_UNDELIVERED;
+			if (!idev)
+				status = SAS_DEVICE_UNKNOWN;
+			else
+				status = SAS_ABORTED_TASK;
+
+			complete_to_host = isci_perform_normal_io_completion;
+			set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+			break;
+
+
+		default:
+			/* Catch any otherwise unhandled error codes here. */
+			dev_dbg(&ihost->pdev->dev,
+				 "%s: invalid completion code: 0x%x - "
+				 "isci_request = %p\n",
+				 __func__, completion_status, request);
+
+			response = SAS_TASK_UNDELIVERED;
+
+			/* See if the device has been/is being stopped. Note
+			 * that we ignore the quiesce state, since we are
+			 * concerned about the actual device state.
+			 */
+			if (!idev)
+				status = SAS_DEVICE_UNKNOWN;
+			else
+				status = SAS_ABORTED_TASK;
+
+			if (SAS_PROTOCOL_SMP == task->task_proto) {
+				set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+				complete_to_host = isci_perform_normal_io_completion;
+			} else {
+				clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags);
+				complete_to_host = isci_perform_error_io_completion;
+			}
+			break;
+		}
+		break;
+	}
+
+	switch (task->task_proto) {
+	case SAS_PROTOCOL_SSP:
+		if (task->data_dir == DMA_NONE)
+			break;
+		if (task->num_scatter == 0)
+			/* 0 indicates a single dma address */
+			dma_unmap_single(&ihost->pdev->dev,
+					 request->zero_scatter_daddr,
+					 task->total_xfer_len, task->data_dir);
+		else  /* unmap the sgl dma addresses */
+			dma_unmap_sg(&ihost->pdev->dev, task->scatter,
+				     request->num_sg_entries, task->data_dir);
+		break;
+	case SAS_PROTOCOL_SMP: {
+		struct scatterlist *sg = &task->smp_task.smp_req;
+		struct smp_req *smp_req;
+		void *kaddr;
+
+		dma_unmap_sg(&ihost->pdev->dev, sg, 1, DMA_TO_DEVICE);
+
+		/* need to swab it back in case the command buffer is re-used */
+		kaddr = kmap_atomic(sg_page(sg), KM_IRQ0);
+		smp_req = kaddr + sg->offset;
+		sci_swab32_cpy(smp_req, smp_req, sg->length / sizeof(u32));
+		kunmap_atomic(kaddr, KM_IRQ0);
+		break;
+	}
+	default:
+		break;
+	}
+
+	/* Put the completed request on the correct list */
+	isci_task_save_for_upper_layer_completion(ihost, request, response,
+						  status, complete_to_host
+						  );
+
+	/* complete the io request to the core. */
+	sci_controller_complete_io(ihost, request->target_device, request);
+	isci_put_device(idev);
+
+	/* set terminated handle so it cannot be completed or
+	 * terminated again, and to cause any calls into abort
+	 * task to recognize the already completed case.
+	 */
+	set_bit(IREQ_TERMINATED, &request->flags);
+}
+
+static void sci_request_started_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_request *ireq = container_of(sm, typeof(*ireq), sm);
+	struct domain_device *dev = ireq->target_device->domain_dev;
+	struct sas_task *task;
+
+	/* XXX as hch said always creating an internal sas_task for tmf
+	 * requests would simplify the driver
+	 */
+	task = ireq->ttype == io_task ? isci_request_access_task(ireq) : NULL;
+
+	/* all unaccelerated request types (non ssp or ncq) handled with
+	 * substates
+	 */
+	if (!task && dev->dev_type == SAS_END_DEV) {
+		sci_change_state(sm, SCI_REQ_TASK_WAIT_TC_COMP);
+	} else if (!task &&
+		   (isci_request_access_tmf(ireq)->tmf_code == isci_tmf_sata_srst_high ||
+		    isci_request_access_tmf(ireq)->tmf_code == isci_tmf_sata_srst_low)) {
+		sci_change_state(sm, SCI_REQ_STP_SOFT_RESET_WAIT_H2D_ASSERTED);
+	} else if (task && task->task_proto == SAS_PROTOCOL_SMP) {
+		sci_change_state(sm, SCI_REQ_SMP_WAIT_RESP);
+	} else if (task && sas_protocol_ata(task->task_proto) &&
+		   !task->ata_task.use_ncq) {
+		u32 state;
+
+		if (task->data_dir == DMA_NONE)
+			state = SCI_REQ_STP_NON_DATA_WAIT_H2D;
+		else if (task->ata_task.dma_xfer)
+			state = SCI_REQ_STP_UDMA_WAIT_TC_COMP;
+		else /* PIO */
+			state = SCI_REQ_STP_PIO_WAIT_H2D;
+
+		sci_change_state(sm, state);
+	}
+}
+
+static void sci_request_completed_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_request *ireq = container_of(sm, typeof(*ireq), sm);
+	struct isci_host *ihost = ireq->owning_controller;
+
+	/* Tell the SCI_USER that the IO request is complete */
+	if (!test_bit(IREQ_TMF, &ireq->flags))
+		isci_request_io_request_complete(ihost, ireq,
+						 ireq->sci_status);
+	else
+		isci_task_request_complete(ihost, ireq, ireq->sci_status);
+}
+
+static void sci_request_aborting_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_request *ireq = container_of(sm, typeof(*ireq), sm);
+
+	/* Setting the abort bit in the Task Context is required by the silicon. */
+	ireq->tc->abort = 1;
+}
+
+static void sci_stp_request_started_non_data_await_h2d_completion_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_request *ireq = container_of(sm, typeof(*ireq), sm);
+
+	ireq->target_device->working_request = ireq;
+}
+
+static void sci_stp_request_started_pio_await_h2d_completion_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_request *ireq = container_of(sm, typeof(*ireq), sm);
+
+	ireq->target_device->working_request = ireq;
+}
+
+static void sci_stp_request_started_soft_reset_await_h2d_asserted_completion_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_request *ireq = container_of(sm, typeof(*ireq), sm);
+
+	ireq->target_device->working_request = ireq;
+}
+
+static void sci_stp_request_started_soft_reset_await_h2d_diagnostic_completion_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_request *ireq = container_of(sm, typeof(*ireq), sm);
+	struct scu_task_context *tc = ireq->tc;
+	struct host_to_dev_fis *h2d_fis;
+	enum sci_status status;
+
+	/* Clear the SRST bit */
+	h2d_fis = &ireq->stp.cmd;
+	h2d_fis->control = 0;
+
+	/* Clear the TC control bit */
+	tc->control_frame = 0;
+
+	status = sci_controller_continue_io(ireq);
+	WARN_ONCE(status != SCI_SUCCESS, "isci: continue io failure\n");
+}
+
+static const struct sci_base_state sci_request_state_table[] = {
+	[SCI_REQ_INIT] = { },
+	[SCI_REQ_CONSTRUCTED] = { },
+	[SCI_REQ_STARTED] = {
+		.enter_state = sci_request_started_state_enter,
+	},
+	[SCI_REQ_STP_NON_DATA_WAIT_H2D] = {
+		.enter_state = sci_stp_request_started_non_data_await_h2d_completion_enter,
+	},
+	[SCI_REQ_STP_NON_DATA_WAIT_D2H] = { },
+	[SCI_REQ_STP_PIO_WAIT_H2D] = {
+		.enter_state = sci_stp_request_started_pio_await_h2d_completion_enter,
+	},
+	[SCI_REQ_STP_PIO_WAIT_FRAME] = { },
+	[SCI_REQ_STP_PIO_DATA_IN] = { },
+	[SCI_REQ_STP_PIO_DATA_OUT] = { },
+	[SCI_REQ_STP_UDMA_WAIT_TC_COMP] = { },
+	[SCI_REQ_STP_UDMA_WAIT_D2H] = { },
+	[SCI_REQ_STP_SOFT_RESET_WAIT_H2D_ASSERTED] = {
+		.enter_state = sci_stp_request_started_soft_reset_await_h2d_asserted_completion_enter,
+	},
+	[SCI_REQ_STP_SOFT_RESET_WAIT_H2D_DIAG] = {
+		.enter_state = sci_stp_request_started_soft_reset_await_h2d_diagnostic_completion_enter,
+	},
+	[SCI_REQ_STP_SOFT_RESET_WAIT_D2H] = { },
+	[SCI_REQ_TASK_WAIT_TC_COMP] = { },
+	[SCI_REQ_TASK_WAIT_TC_RESP] = { },
+	[SCI_REQ_SMP_WAIT_RESP] = { },
+	[SCI_REQ_SMP_WAIT_TC_COMP] = { },
+	[SCI_REQ_COMPLETED] = {
+		.enter_state = sci_request_completed_state_enter,
+	},
+	[SCI_REQ_ABORTING] = {
+		.enter_state = sci_request_aborting_state_enter,
+	},
+	[SCI_REQ_FINAL] = { },
+};
+
+static void
+sci_general_request_construct(struct isci_host *ihost,
+				   struct isci_remote_device *idev,
+				   struct isci_request *ireq)
+{
+	sci_init_sm(&ireq->sm, sci_request_state_table, SCI_REQ_INIT);
+
+	ireq->target_device = idev;
+	ireq->protocol = SCIC_NO_PROTOCOL;
+	ireq->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX;
+
+	ireq->sci_status   = SCI_SUCCESS;
+	ireq->scu_status   = 0;
+	ireq->post_context = 0xFFFFFFFF;
+}
+
+static enum sci_status
+sci_io_request_construct(struct isci_host *ihost,
+			  struct isci_remote_device *idev,
+			  struct isci_request *ireq)
+{
+	struct domain_device *dev = idev->domain_dev;
+	enum sci_status status = SCI_SUCCESS;
+
+	/* Build the common part of the request */
+	sci_general_request_construct(ihost, idev, ireq);
+
+	if (idev->rnc.remote_node_index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX)
+		return SCI_FAILURE_INVALID_REMOTE_DEVICE;
+
+	if (dev->dev_type == SAS_END_DEV)
+		/* pass */;
+	else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP))
+		memset(&ireq->stp.cmd, 0, sizeof(ireq->stp.cmd));
+	else if (dev_is_expander(dev))
+		/* pass */;
+	else
+		return SCI_FAILURE_UNSUPPORTED_PROTOCOL;
+
+	memset(ireq->tc, 0, offsetof(struct scu_task_context, sgl_pair_ab));
+
+	return status;
+}
+
+enum sci_status sci_task_request_construct(struct isci_host *ihost,
+					    struct isci_remote_device *idev,
+					    u16 io_tag, struct isci_request *ireq)
+{
+	struct domain_device *dev = idev->domain_dev;
+	enum sci_status status = SCI_SUCCESS;
+
+	/* Build the common part of the request */
+	sci_general_request_construct(ihost, idev, ireq);
+
+	if (dev->dev_type == SAS_END_DEV ||
+	    dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) {
+		set_bit(IREQ_TMF, &ireq->flags);
+		memset(ireq->tc, 0, sizeof(struct scu_task_context));
+	} else
+		status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
+
+	return status;
+}
+
+static enum sci_status isci_request_ssp_request_construct(
+	struct isci_request *request)
+{
+	enum sci_status status;
+
+	dev_dbg(&request->isci_host->pdev->dev,
+		"%s: request = %p\n",
+		__func__,
+		request);
+	status = sci_io_request_construct_basic_ssp(request);
+	return status;
+}
+
+static enum sci_status isci_request_stp_request_construct(struct isci_request *ireq)
+{
+	struct sas_task *task = isci_request_access_task(ireq);
+	struct host_to_dev_fis *fis = &ireq->stp.cmd;
+	struct ata_queued_cmd *qc = task->uldd_task;
+	enum sci_status status;
+
+	dev_dbg(&ireq->isci_host->pdev->dev,
+		"%s: ireq = %p\n",
+		__func__,
+		ireq);
+
+	memcpy(fis, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
+	if (!task->ata_task.device_control_reg_update)
+		fis->flags |= 0x80;
+	fis->flags &= 0xF0;
+
+	status = sci_io_request_construct_basic_sata(ireq);
+
+	if (qc && (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
+		   qc->tf.command == ATA_CMD_FPDMA_READ)) {
+		fis->sector_count = qc->tag << 3;
+		ireq->tc->type.stp.ncq_tag = qc->tag;
+	}
+
+	return status;
+}
+
+static enum sci_status
+sci_io_request_construct_smp(struct device *dev,
+			      struct isci_request *ireq,
+			      struct sas_task *task)
+{
+	struct scatterlist *sg = &task->smp_task.smp_req;
+	struct isci_remote_device *idev;
+	struct scu_task_context *task_context;
+	struct isci_port *iport;
+	struct smp_req *smp_req;
+	void *kaddr;
+	u8 req_len;
+	u32 cmd;
+
+	kaddr = kmap_atomic(sg_page(sg), KM_IRQ0);
+	smp_req = kaddr + sg->offset;
+	/*
+	 * Look at the SMP requests' header fields; for certain SAS 1.x SMP
+	 * functions under SAS 2.0, a zero request length really indicates
+	 * a non-zero default length.
+	 */
+	if (smp_req->req_len == 0) {
+		switch (smp_req->func) {
+		case SMP_DISCOVER:
+		case SMP_REPORT_PHY_ERR_LOG:
+		case SMP_REPORT_PHY_SATA:
+		case SMP_REPORT_ROUTE_INFO:
+			smp_req->req_len = 2;
+			break;
+		case SMP_CONF_ROUTE_INFO:
+		case SMP_PHY_CONTROL:
+		case SMP_PHY_TEST_FUNCTION:
+			smp_req->req_len = 9;
+			break;
+			/* Default - zero is a valid default for 2.0. */
+		}
+	}
+	req_len = smp_req->req_len;
+	sci_swab32_cpy(smp_req, smp_req, sg->length / sizeof(u32));
+	cmd = *(u32 *) smp_req;
+	kunmap_atomic(kaddr, KM_IRQ0);
+
+	if (!dma_map_sg(dev, sg, 1, DMA_TO_DEVICE))
+		return SCI_FAILURE;
+
+	ireq->protocol = SCIC_SMP_PROTOCOL;
+
+	/* byte swap the smp request. */
+
+	task_context = ireq->tc;
+
+	idev = ireq->target_device;
+	iport = idev->owning_port;
+
+	/*
+	 * Fill in the TC with the its required data
+	 * 00h
+	 */
+	task_context->priority = 0;
+	task_context->initiator_request = 1;
+	task_context->connection_rate = idev->connection_rate;
+	task_context->protocol_engine_index = ISCI_PEG;
+	task_context->logical_port_index = iport->physical_port_index;
+	task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SMP;
+	task_context->abort = 0;
+	task_context->valid = SCU_TASK_CONTEXT_VALID;
+	task_context->context_type = SCU_TASK_CONTEXT_TYPE;
+
+	/* 04h */
+	task_context->remote_node_index = idev->rnc.remote_node_index;
+	task_context->command_code = 0;
+	task_context->task_type = SCU_TASK_TYPE_SMP_REQUEST;
+
+	/* 08h */
+	task_context->link_layer_control = 0;
+	task_context->do_not_dma_ssp_good_response = 1;
+	task_context->strict_ordering = 0;
+	task_context->control_frame = 1;
+	task_context->timeout_enable = 0;
+	task_context->block_guard_enable = 0;
+
+	/* 0ch */
+	task_context->address_modifier = 0;
+
+	/* 10h */
+	task_context->ssp_command_iu_length = req_len;
+
+	/* 14h */
+	task_context->transfer_length_bytes = 0;
+
+	/*
+	 * 18h ~ 30h, protocol specific
+	 * since commandIU has been build by framework at this point, we just
+	 * copy the frist DWord from command IU to this location. */
+	memcpy(&task_context->type.smp, &cmd, sizeof(u32));
+
+	/*
+	 * 40h
+	 * "For SMP you could program it to zero. We would prefer that way
+	 * so that done code will be consistent." - Venki
+	 */
+	task_context->task_phase = 0;
+
+	ireq->post_context = (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+			      (ISCI_PEG << SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+			       (iport->physical_port_index <<
+				SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
+			      ISCI_TAG_TCI(ireq->io_tag));
+	/*
+	 * Copy the physical address for the command buffer to the SCU Task
+	 * Context command buffer should not contain command header.
+	 */
+	task_context->command_iu_upper = upper_32_bits(sg_dma_address(sg));
+	task_context->command_iu_lower = lower_32_bits(sg_dma_address(sg) + sizeof(u32));
+
+	/* SMP response comes as UF, so no need to set response IU address. */
+	task_context->response_iu_upper = 0;
+	task_context->response_iu_lower = 0;
+
+	sci_change_state(&ireq->sm, SCI_REQ_CONSTRUCTED);
+
+	return SCI_SUCCESS;
+}
+
+/*
+ * isci_smp_request_build() - This function builds the smp request.
+ * @ireq: This parameter points to the isci_request allocated in the
+ *    request construct function.
+ *
+ * SCI_SUCCESS on successfull completion, or specific failure code.
+ */
+static enum sci_status isci_smp_request_build(struct isci_request *ireq)
+{
+	struct sas_task *task = isci_request_access_task(ireq);
+	struct device *dev = &ireq->isci_host->pdev->dev;
+	enum sci_status status = SCI_FAILURE;
+
+	status = sci_io_request_construct_smp(dev, ireq, task);
+	if (status != SCI_SUCCESS)
+		dev_dbg(&ireq->isci_host->pdev->dev,
+			 "%s: failed with status = %d\n",
+			 __func__,
+			 status);
+
+	return status;
+}
+
+/**
+ * isci_io_request_build() - This function builds the io request object.
+ * @ihost: This parameter specifies the ISCI host object
+ * @request: This parameter points to the isci_request object allocated in the
+ *    request construct function.
+ * @sci_device: This parameter is the handle for the sci core's remote device
+ *    object that is the destination for this request.
+ *
+ * SCI_SUCCESS on successfull completion, or specific failure code.
+ */
+static enum sci_status isci_io_request_build(struct isci_host *ihost,
+					     struct isci_request *request,
+					     struct isci_remote_device *idev)
+{
+	enum sci_status status = SCI_SUCCESS;
+	struct sas_task *task = isci_request_access_task(request);
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: idev = 0x%p; request = %p, "
+		"num_scatter = %d\n",
+		__func__,
+		idev,
+		request,
+		task->num_scatter);
+
+	/* map the sgl addresses, if present.
+	 * libata does the mapping for sata devices
+	 * before we get the request.
+	 */
+	if (task->num_scatter &&
+	    !sas_protocol_ata(task->task_proto) &&
+	    !(SAS_PROTOCOL_SMP & task->task_proto)) {
+
+		request->num_sg_entries = dma_map_sg(
+			&ihost->pdev->dev,
+			task->scatter,
+			task->num_scatter,
+			task->data_dir
+			);
+
+		if (request->num_sg_entries == 0)
+			return SCI_FAILURE_INSUFFICIENT_RESOURCES;
+	}
+
+	status = sci_io_request_construct(ihost, idev, request);
+
+	if (status != SCI_SUCCESS) {
+		dev_dbg(&ihost->pdev->dev,
+			 "%s: failed request construct\n",
+			 __func__);
+		return SCI_FAILURE;
+	}
+
+	switch (task->task_proto) {
+	case SAS_PROTOCOL_SMP:
+		status = isci_smp_request_build(request);
+		break;
+	case SAS_PROTOCOL_SSP:
+		status = isci_request_ssp_request_construct(request);
+		break;
+	case SAS_PROTOCOL_SATA:
+	case SAS_PROTOCOL_STP:
+	case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
+		status = isci_request_stp_request_construct(request);
+		break;
+	default:
+		dev_dbg(&ihost->pdev->dev,
+			 "%s: unknown protocol\n", __func__);
+		return SCI_FAILURE;
+	}
+
+	return SCI_SUCCESS;
+}
+
+static struct isci_request *isci_request_from_tag(struct isci_host *ihost, u16 tag)
+{
+	struct isci_request *ireq;
+
+	ireq = ihost->reqs[ISCI_TAG_TCI(tag)];
+	ireq->io_tag = tag;
+	ireq->io_request_completion = NULL;
+	ireq->flags = 0;
+	ireq->num_sg_entries = 0;
+	INIT_LIST_HEAD(&ireq->completed_node);
+	INIT_LIST_HEAD(&ireq->dev_node);
+	isci_request_change_state(ireq, allocated);
+
+	return ireq;
+}
+
+static struct isci_request *isci_io_request_from_tag(struct isci_host *ihost,
+						     struct sas_task *task,
+						     u16 tag)
+{
+	struct isci_request *ireq;
+
+	ireq = isci_request_from_tag(ihost, tag);
+	ireq->ttype_ptr.io_task_ptr = task;
+	ireq->ttype = io_task;
+	task->lldd_task = ireq;
+
+	return ireq;
+}
+
+struct isci_request *isci_tmf_request_from_tag(struct isci_host *ihost,
+					       struct isci_tmf *isci_tmf,
+					       u16 tag)
+{
+	struct isci_request *ireq;
+
+	ireq = isci_request_from_tag(ihost, tag);
+	ireq->ttype_ptr.tmf_task_ptr = isci_tmf;
+	ireq->ttype = tmf_task;
+
+	return ireq;
+}
+
+int isci_request_execute(struct isci_host *ihost, struct isci_remote_device *idev,
+			 struct sas_task *task, u16 tag)
+{
+	enum sci_status status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
+	struct isci_request *ireq;
+	unsigned long flags;
+	int ret = 0;
+
+	/* do common allocation and init of request object. */
+	ireq = isci_io_request_from_tag(ihost, task, tag);
+
+	status = isci_io_request_build(ihost, ireq, idev);
+	if (status != SCI_SUCCESS) {
+		dev_dbg(&ihost->pdev->dev,
+			 "%s: request_construct failed - status = 0x%x\n",
+			 __func__,
+			 status);
+		return status;
+	}
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	if (test_bit(IDEV_IO_NCQERROR, &idev->flags)) {
+
+		if (isci_task_is_ncq_recovery(task)) {
+
+			/* The device is in an NCQ recovery state.  Issue the
+			 * request on the task side.  Note that it will
+			 * complete on the I/O request side because the
+			 * request was built that way (ie.
+			 * ireq->is_task_management_request is false).
+			 */
+			status = sci_controller_start_task(ihost,
+							    idev,
+							    ireq);
+		} else {
+			status = SCI_FAILURE;
+		}
+	} else {
+		/* send the request, let the core assign the IO TAG.	*/
+		status = sci_controller_start_io(ihost, idev,
+						  ireq);
+	}
+
+	if (status != SCI_SUCCESS &&
+	    status != SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
+		dev_dbg(&ihost->pdev->dev,
+			 "%s: failed request start (0x%x)\n",
+			 __func__, status);
+		spin_unlock_irqrestore(&ihost->scic_lock, flags);
+		return status;
+	}
+
+	/* Either I/O started OK, or the core has signaled that
+	 * the device needs a target reset.
+	 *
+	 * In either case, hold onto the I/O for later.
+	 *
+	 * Update it's status and add it to the list in the
+	 * remote device object.
+	 */
+	list_add(&ireq->dev_node, &idev->reqs_in_process);
+
+	if (status == SCI_SUCCESS) {
+		isci_request_change_state(ireq, started);
+	} else {
+		/* The request did not really start in the
+		 * hardware, so clear the request handle
+		 * here so no terminations will be done.
+		 */
+		set_bit(IREQ_TERMINATED, &ireq->flags);
+		isci_request_change_state(ireq, completed);
+	}
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+	if (status ==
+	    SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
+		/* Signal libsas that we need the SCSI error
+		 * handler thread to work on this I/O and that
+		 * we want a device reset.
+		 */
+		spin_lock_irqsave(&task->task_state_lock, flags);
+		task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
+		spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+		/* Cause this task to be scheduled in the SCSI error
+		 * handler thread.
+		 */
+		isci_execpath_callback(ihost, task,
+				       sas_task_abort);
+
+		/* Change the status, since we are holding
+		 * the I/O until it is managed by the SCSI
+		 * error handler.
+		 */
+		status = SCI_SUCCESS;
+	}
+
+	return ret;
+}
diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h
new file mode 100644
index 0000000..7a1d5a9
--- /dev/null
+++ b/drivers/scsi/isci/request.h
@@ -0,0 +1,448 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _ISCI_REQUEST_H_
+#define _ISCI_REQUEST_H_
+
+#include "isci.h"
+#include "host.h"
+#include "scu_task_context.h"
+
+/**
+ * struct isci_request_status - This enum defines the possible states of an I/O
+ *    request.
+ *
+ *
+ */
+enum isci_request_status {
+	unallocated = 0x00,
+	allocated   = 0x01,
+	started     = 0x02,
+	completed   = 0x03,
+	aborting    = 0x04,
+	aborted     = 0x05,
+	terminating = 0x06,
+	dead        = 0x07
+};
+
+enum task_type {
+	io_task  = 0,
+	tmf_task = 1
+};
+
+enum sci_request_protocol {
+	SCIC_NO_PROTOCOL,
+	SCIC_SMP_PROTOCOL,
+	SCIC_SSP_PROTOCOL,
+	SCIC_STP_PROTOCOL
+}; /* XXX remove me, use sas_task.{dev|task_proto} instead */;
+
+/**
+ * isci_stp_request - extra request infrastructure to handle pio/atapi protocol
+ * @pio_len - number of bytes requested at PIO setup
+ * @status - pio setup ending status value to tell us if we need
+ *	     to wait for another fis or if the transfer is complete.  Upon
+ *           receipt of a d2h fis this will be the status field of that fis.
+ * @sgl - track pio transfer progress as we iterate through the sgl
+ * @device_cdb_len - atapi device advertises it's transfer constraints at setup
+ */
+struct isci_stp_request {
+	u32 pio_len;
+	u8 status;
+
+	struct isci_stp_pio_sgl {
+		int index;
+		u8 set;
+		u32 offset;
+	} sgl;
+	u32 device_cdb_len;
+};
+
+struct isci_request {
+	enum isci_request_status status;
+	#define IREQ_COMPLETE_IN_TARGET 0
+	#define IREQ_TERMINATED 1
+	#define IREQ_TMF 2
+	#define IREQ_ACTIVE 3
+	unsigned long flags;
+	/* XXX kill ttype and ttype_ptr, allocate full sas_task */
+	enum task_type ttype;
+	union ttype_ptr_union {
+		struct sas_task *io_task_ptr;   /* When ttype==io_task  */
+		struct isci_tmf *tmf_task_ptr;  /* When ttype==tmf_task */
+	} ttype_ptr;
+	struct isci_host *isci_host;
+	/* For use in the requests_to_{complete|abort} lists: */
+	struct list_head completed_node;
+	/* For use in the reqs_in_process list: */
+	struct list_head dev_node;
+	spinlock_t state_lock;
+	dma_addr_t request_daddr;
+	dma_addr_t zero_scatter_daddr;
+	unsigned int num_sg_entries;
+	/* Note: "io_request_completion" is completed in two different ways
+	 * depending on whether this is a TMF or regular request.
+	 * - TMF requests are completed in the thread that started them;
+	 * - regular requests are completed in the request completion callback
+	 *   function.
+	 * This difference in operation allows the aborter of a TMF request
+	 * to be sure that once the TMF request completes, the I/O that the
+	 * TMF was aborting is guaranteed to have completed.
+	 *
+	 * XXX kill io_request_completion
+	 */
+	struct completion *io_request_completion;
+	struct sci_base_state_machine sm;
+	struct isci_host *owning_controller;
+	struct isci_remote_device *target_device;
+	u16 io_tag;
+	enum sci_request_protocol protocol;
+	u32 scu_status; /* hardware result */
+	u32 sci_status; /* upper layer disposition */
+	u32 post_context;
+	struct scu_task_context *tc;
+	/* could be larger with sg chaining */
+	#define SCU_SGL_SIZE ((SCI_MAX_SCATTER_GATHER_ELEMENTS + 1) / 2)
+	struct scu_sgl_element_pair sg_table[SCU_SGL_SIZE] __attribute__ ((aligned(32)));
+	/* This field is a pointer to the stored rx frame data.  It is used in
+	 * STP internal requests and SMP response frames.  If this field is
+	 * non-NULL the saved frame must be released on IO request completion.
+	 */
+	u32 saved_rx_frame_index;
+
+	union {
+		struct {
+			union {
+				struct ssp_cmd_iu cmd;
+				struct ssp_task_iu tmf;
+			};
+			union {
+				struct ssp_response_iu rsp;
+				u8 rsp_buf[SSP_RESP_IU_MAX_SIZE];
+			};
+		} ssp;
+		struct {
+			struct smp_resp rsp;
+		} smp;
+		struct {
+			struct isci_stp_request req;
+			struct host_to_dev_fis cmd;
+			struct dev_to_host_fis rsp;
+		} stp;
+	};
+};
+
+static inline struct isci_request *to_ireq(struct isci_stp_request *stp_req)
+{
+	struct isci_request *ireq;
+
+	ireq = container_of(stp_req, typeof(*ireq), stp.req);
+	return ireq;
+}
+
+/**
+ * enum sci_base_request_states - This enumeration depicts all the states for
+ *    the common request state machine.
+ *
+ *
+ */
+enum sci_base_request_states {
+	/*
+	 * Simply the initial state for the base request state machine.
+	 */
+	SCI_REQ_INIT,
+
+	/*
+	 * This state indicates that the request has been constructed.
+	 * This state is entered from the INITIAL state.
+	 */
+	SCI_REQ_CONSTRUCTED,
+
+	/*
+	 * This state indicates that the request has been started. This state
+	 * is entered from the CONSTRUCTED state.
+	 */
+	SCI_REQ_STARTED,
+
+	SCI_REQ_STP_UDMA_WAIT_TC_COMP,
+	SCI_REQ_STP_UDMA_WAIT_D2H,
+
+	SCI_REQ_STP_NON_DATA_WAIT_H2D,
+	SCI_REQ_STP_NON_DATA_WAIT_D2H,
+
+	SCI_REQ_STP_SOFT_RESET_WAIT_H2D_ASSERTED,
+	SCI_REQ_STP_SOFT_RESET_WAIT_H2D_DIAG,
+	SCI_REQ_STP_SOFT_RESET_WAIT_D2H,
+
+	/*
+	 * While in this state the IO request object is waiting for the TC
+	 * completion notification for the H2D Register FIS
+	 */
+	SCI_REQ_STP_PIO_WAIT_H2D,
+
+	/*
+	 * While in this state the IO request object is waiting for either a
+	 * PIO Setup FIS or a D2H register FIS.  The type of frame received is
+	 * based on the result of the prior frame and line conditions.
+	 */
+	SCI_REQ_STP_PIO_WAIT_FRAME,
+
+	/*
+	 * While in this state the IO request object is waiting for a DATA
+	 * frame from the device.
+	 */
+	SCI_REQ_STP_PIO_DATA_IN,
+
+	/*
+	 * While in this state the IO request object is waiting to transmit
+	 * the next data frame to the device.
+	 */
+	SCI_REQ_STP_PIO_DATA_OUT,
+
+	/*
+	 * The AWAIT_TC_COMPLETION sub-state indicates that the started raw
+	 * task management request is waiting for the transmission of the
+	 * initial frame (i.e. command, task, etc.).
+	 */
+	SCI_REQ_TASK_WAIT_TC_COMP,
+
+	/*
+	 * This sub-state indicates that the started task management request
+	 * is waiting for the reception of an unsolicited frame
+	 * (i.e. response IU).
+	 */
+	SCI_REQ_TASK_WAIT_TC_RESP,
+
+	/*
+	 * This sub-state indicates that the started task management request
+	 * is waiting for the reception of an unsolicited frame
+	 * (i.e. response IU).
+	 */
+	SCI_REQ_SMP_WAIT_RESP,
+
+	/*
+	 * The AWAIT_TC_COMPLETION sub-state indicates that the started SMP
+	 * request is waiting for the transmission of the initial frame
+	 * (i.e. command, task, etc.).
+	 */
+	SCI_REQ_SMP_WAIT_TC_COMP,
+
+	/*
+	 * This state indicates that the request has completed.
+	 * This state is entered from the STARTED state. This state is entered
+	 * from the ABORTING state.
+	 */
+	SCI_REQ_COMPLETED,
+
+	/*
+	 * This state indicates that the request is in the process of being
+	 * terminated/aborted.
+	 * This state is entered from the CONSTRUCTED state.
+	 * This state is entered from the STARTED state.
+	 */
+	SCI_REQ_ABORTING,
+
+	/*
+	 * Simply the final state for the base request state machine.
+	 */
+	SCI_REQ_FINAL,
+};
+
+enum sci_status sci_request_start(struct isci_request *ireq);
+enum sci_status sci_io_request_terminate(struct isci_request *ireq);
+enum sci_status
+sci_io_request_event_handler(struct isci_request *ireq,
+				  u32 event_code);
+enum sci_status
+sci_io_request_frame_handler(struct isci_request *ireq,
+				  u32 frame_index);
+enum sci_status
+sci_task_request_terminate(struct isci_request *ireq);
+extern enum sci_status
+sci_request_complete(struct isci_request *ireq);
+extern enum sci_status
+sci_io_request_tc_completion(struct isci_request *ireq, u32 code);
+
+/* XXX open code in caller */
+static inline dma_addr_t
+sci_io_request_get_dma_addr(struct isci_request *ireq, void *virt_addr)
+{
+
+	char *requested_addr = (char *)virt_addr;
+	char *base_addr = (char *)ireq;
+
+	BUG_ON(requested_addr < base_addr);
+	BUG_ON((requested_addr - base_addr) >= sizeof(*ireq));
+
+	return ireq->request_daddr + (requested_addr - base_addr);
+}
+
+/**
+ * isci_request_change_state() - This function sets the status of the request
+ *    object.
+ * @request: This parameter points to the isci_request object
+ * @status: This Parameter is the new status of the object
+ *
+ */
+static inline enum isci_request_status
+isci_request_change_state(struct isci_request *isci_request,
+			  enum isci_request_status status)
+{
+	enum isci_request_status old_state;
+	unsigned long flags;
+
+	dev_dbg(&isci_request->isci_host->pdev->dev,
+		"%s: isci_request = %p, state = 0x%x\n",
+		__func__,
+		isci_request,
+		status);
+
+	BUG_ON(isci_request == NULL);
+
+	spin_lock_irqsave(&isci_request->state_lock, flags);
+	old_state = isci_request->status;
+	isci_request->status = status;
+	spin_unlock_irqrestore(&isci_request->state_lock, flags);
+
+	return old_state;
+}
+
+/**
+ * isci_request_change_started_to_newstate() - This function sets the status of
+ *    the request object.
+ * @request: This parameter points to the isci_request object
+ * @status: This Parameter is the new status of the object
+ *
+ * state previous to any change.
+ */
+static inline enum isci_request_status
+isci_request_change_started_to_newstate(struct isci_request *isci_request,
+					struct completion *completion_ptr,
+					enum isci_request_status newstate)
+{
+	enum isci_request_status old_state;
+	unsigned long flags;
+
+	spin_lock_irqsave(&isci_request->state_lock, flags);
+
+	old_state = isci_request->status;
+
+	if (old_state == started || old_state == aborting) {
+		BUG_ON(isci_request->io_request_completion != NULL);
+
+		isci_request->io_request_completion = completion_ptr;
+		isci_request->status = newstate;
+	}
+
+	spin_unlock_irqrestore(&isci_request->state_lock, flags);
+
+	dev_dbg(&isci_request->isci_host->pdev->dev,
+		"%s: isci_request = %p, old_state = 0x%x\n",
+		__func__,
+		isci_request,
+		old_state);
+
+	return old_state;
+}
+
+/**
+ * isci_request_change_started_to_aborted() - This function sets the status of
+ *    the request object.
+ * @request: This parameter points to the isci_request object
+ * @completion_ptr: This parameter is saved as the kernel completion structure
+ *    signalled when the old request completes.
+ *
+ * state previous to any change.
+ */
+static inline enum isci_request_status
+isci_request_change_started_to_aborted(struct isci_request *isci_request,
+				       struct completion *completion_ptr)
+{
+	return isci_request_change_started_to_newstate(isci_request,
+						       completion_ptr,
+						       aborted);
+}
+
+#define isci_request_access_task(req) ((req)->ttype_ptr.io_task_ptr)
+
+#define isci_request_access_tmf(req) ((req)->ttype_ptr.tmf_task_ptr)
+
+struct isci_request *isci_tmf_request_from_tag(struct isci_host *ihost,
+					       struct isci_tmf *isci_tmf,
+					       u16 tag);
+int isci_request_execute(struct isci_host *ihost, struct isci_remote_device *idev,
+			 struct sas_task *task, u16 tag);
+void isci_terminate_pending_requests(struct isci_host *ihost,
+				     struct isci_remote_device *idev);
+enum sci_status
+sci_task_request_construct(struct isci_host *ihost,
+			    struct isci_remote_device *idev,
+			    u16 io_tag,
+			    struct isci_request *ireq);
+enum sci_status
+sci_task_request_construct_ssp(struct isci_request *ireq);
+enum sci_status
+sci_task_request_construct_sata(struct isci_request *ireq);
+void sci_smp_request_copy_response(struct isci_request *ireq);
+
+static inline int isci_task_is_ncq_recovery(struct sas_task *task)
+{
+	return (sas_protocol_ata(task->task_proto) &&
+		task->ata_task.fis.command == ATA_CMD_READ_LOG_EXT &&
+		task->ata_task.fis.lbal == ATA_LOG_SATA_NCQ);
+
+}
+
+#endif /* !defined(_ISCI_REQUEST_H_) */
diff --git a/drivers/scsi/isci/sas.h b/drivers/scsi/isci/sas.h
new file mode 100644
index 0000000..462b151
--- /dev/null
+++ b/drivers/scsi/isci/sas.h
@@ -0,0 +1,219 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _SCI_SAS_H_
+#define _SCI_SAS_H_
+
+#include <linux/kernel.h>
+
+/*
+ * SATA FIS Types These constants depict the various SATA FIS types devined in
+ * the serial ATA specification.
+ * XXX: This needs to go into <scsi/sas.h>
+ */
+#define FIS_REGH2D          0x27
+#define FIS_REGD2H          0x34
+#define FIS_SETDEVBITS      0xA1
+#define FIS_DMA_ACTIVATE    0x39
+#define FIS_DMA_SETUP       0x41
+#define FIS_BIST_ACTIVATE   0x58
+#define FIS_PIO_SETUP       0x5F
+#define FIS_DATA            0x46
+
+/**************************************************************************/
+#define SSP_RESP_IU_MAX_SIZE	280
+
+/*
+ * contents of the SSP COMMAND INFORMATION UNIT.
+ * For specific information on each of these individual fields please
+ * reference the SAS specification SSP transport layer section.
+ * XXX: This needs to go into <scsi/sas.h>
+ */
+struct ssp_cmd_iu {
+	u8 LUN[8];
+	u8 add_cdb_len:6;
+	u8 _r_a:2;
+	u8 _r_b;
+	u8 en_fburst:1;
+	u8 task_prio:4;
+	u8 task_attr:3;
+	u8 _r_c;
+
+	u8 cdb[16];
+}  __packed;
+
+/*
+ * contents of the SSP TASK INFORMATION UNIT.
+ * For specific information on each of these individual fields please
+ * reference the SAS specification SSP transport layer section.
+ * XXX: This needs to go into <scsi/sas.h>
+ */
+struct ssp_task_iu {
+	u8 LUN[8];
+	u8 _r_a;
+	u8 task_func;
+	u8 _r_b[4];
+	u16 task_tag;
+	u8 _r_c[12];
+}  __packed;
+
+
+/*
+ * struct smp_req_phy_id - This structure defines the contents of
+ *    an SMP Request that is comprised of the struct smp_request_header and a
+ *    phy identifier.
+ *    Examples: SMP_REQUEST_DISCOVER, SMP_REQUEST_REPORT_PHY_SATA.
+ *
+ * For specific information on each of these individual fields please reference
+ * the SAS specification.
+ */
+struct smp_req_phy_id {
+	u8 _r_a[4];		/* bytes 4-7 */
+
+	u8 ign_zone_grp:1;	/* byte 8 */
+	u8 _r_b:7;
+
+	u8 phy_id;		/* byte 9 */
+	u8 _r_c;		/* byte 10 */
+	u8 _r_d;		/* byte 11 */
+}  __packed;
+
+/*
+ * struct smp_req_config_route_info - This structure defines the
+ *    contents of an SMP Configure Route Information request.
+ *
+ * For specific information on each of these individual fields please reference
+ * the SAS specification.
+ */
+struct smp_req_conf_rtinfo {
+	u16 exp_change_cnt;		/* bytes 4-5 */
+	u8 exp_rt_idx_hi;		/* byte 6 */
+	u8 exp_rt_idx;			/* byte 7 */
+
+	u8 _r_a;			/* byte 8 */
+	u8 phy_id;			/* byte 9 */
+	u16 _r_b;			/* bytes 10-11 */
+
+	u8 _r_c:7;			/* byte 12 */
+	u8 dis_rt_entry:1;
+	u8 _r_d[3];			/* bytes 13-15 */
+
+	u8 rt_sas_addr[8];		/* bytes 16-23 */
+	u8 _r_e[16];			/* bytes 24-39 */
+}  __packed;
+
+/*
+ * struct smp_req_phycntl - This structure defines the contents of an
+ *    SMP Phy Controller request.
+ *
+ * For specific information on each of these individual fields please reference
+ * the SAS specification.
+ */
+struct smp_req_phycntl {
+	u16 exp_change_cnt;		/* byte 4-5 */
+
+	u8 _r_a[3];			/* bytes 6-8 */
+
+	u8 phy_id;			/* byte 9 */
+	u8 phy_op;			/* byte 10 */
+
+	u8 upd_pathway:1;		/* byte 11 */
+	u8 _r_b:7;
+
+	u8 _r_c[12];			/* byte 12-23 */
+
+	u8 att_dev_name[8];             /* byte 24-31 */
+
+	u8 _r_d:4;			/* byte 32 */
+	u8 min_linkrate:4;
+
+	u8 _r_e:4;			/* byte 33 */
+	u8 max_linkrate:4;
+
+	u8 _r_f[2];			/* byte 34-35 */
+
+	u8 pathway:4;			/* byte 36 */
+	u8 _r_g:4;
+
+	u8 _r_h[3];			/* bytes 37-39 */
+}  __packed;
+
+/*
+ * struct smp_req - This structure simply unionizes the existing request
+ *    structures into a common request type.
+ *
+ * XXX: This data structure may need to go to scsi/sas.h
+ */
+struct smp_req {
+	u8 type;		/* byte 0 */
+	u8 func;		/* byte 1 */
+	u8 alloc_resp_len;	/* byte 2 */
+	u8 req_len;		/* byte 3 */
+	u8 req_data[0];
+}  __packed;
+
+#define SMP_RESP_HDR_SZ	4
+
+/*
+ * struct sci_sas_address - This structure depicts how a SAS address is
+ *    represented by SCI.
+ * XXX convert this to u8 [SAS_ADDR_SIZE] like the rest of libsas
+ *
+ */
+struct sci_sas_address {
+	u32 high;
+	u32 low;
+};
+#endif
diff --git a/drivers/scsi/isci/scu_completion_codes.h b/drivers/scsi/isci/scu_completion_codes.h
new file mode 100644
index 0000000..c8b329c
--- /dev/null
+++ b/drivers/scsi/isci/scu_completion_codes.h
@@ -0,0 +1,283 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _SCU_COMPLETION_CODES_HEADER_
+#define _SCU_COMPLETION_CODES_HEADER_
+
+/**
+ * This file contains the constants and macros for the SCU hardware completion
+ *    codes.
+ *
+ *
+ */
+
+#define SCU_COMPLETION_TYPE_SHIFT      28
+#define SCU_COMPLETION_TYPE_MASK       0x70000000
+
+/**
+ * SCU_COMPLETION_TYPE() -
+ *
+ * This macro constructs an SCU completion type
+ */
+#define SCU_COMPLETION_TYPE(type) \
+	((u32)(type) << SCU_COMPLETION_TYPE_SHIFT)
+
+/**
+ * SCU_COMPLETION_TYPE() -
+ *
+ * These macros contain the SCU completion types SCU_COMPLETION_TYPE
+ */
+#define SCU_COMPLETION_TYPE_TASK       SCU_COMPLETION_TYPE(0)
+#define SCU_COMPLETION_TYPE_SDMA       SCU_COMPLETION_TYPE(1)
+#define SCU_COMPLETION_TYPE_UFI        SCU_COMPLETION_TYPE(2)
+#define SCU_COMPLETION_TYPE_EVENT      SCU_COMPLETION_TYPE(3)
+#define SCU_COMPLETION_TYPE_NOTIFY     SCU_COMPLETION_TYPE(4)
+
+/**
+ *
+ *
+ * These constants provide the shift and mask values for the various parts of
+ * an SCU completion code.
+ */
+#define SCU_COMPLETION_STATUS_MASK       0x0FFC0000
+#define SCU_COMPLETION_TL_STATUS_MASK    0x0FC00000
+#define SCU_COMPLETION_TL_STATUS_SHIFT   22
+#define SCU_COMPLETION_SDMA_STATUS_MASK  0x003C0000
+#define SCU_COMPLETION_PEG_MASK          0x00010000
+#define SCU_COMPLETION_PORT_MASK         0x00007000
+#define SCU_COMPLETION_PE_MASK           SCU_COMPLETION_PORT_MASK
+#define SCU_COMPLETION_PE_SHIFT          12
+#define SCU_COMPLETION_INDEX_MASK        0x00000FFF
+
+/**
+ * SCU_GET_COMPLETION_TYPE() -
+ *
+ * This macro returns the SCU completion type.
+ */
+#define SCU_GET_COMPLETION_TYPE(completion_code) \
+	((completion_code) & SCU_COMPLETION_TYPE_MASK)
+
+/**
+ * SCU_GET_COMPLETION_STATUS() -
+ *
+ * This macro returns the SCU completion status.
+ */
+#define SCU_GET_COMPLETION_STATUS(completion_code) \
+	((completion_code) & SCU_COMPLETION_STATUS_MASK)
+
+/**
+ * SCU_GET_COMPLETION_TL_STATUS() -
+ *
+ * This macro returns the transport layer completion status.
+ */
+#define SCU_GET_COMPLETION_TL_STATUS(completion_code) \
+	((completion_code) & SCU_COMPLETION_TL_STATUS_MASK)
+
+/**
+ * SCU_MAKE_COMPLETION_STATUS() -
+ *
+ * This macro takes a completion code and performs the shift and mask
+ * operations to turn it into a completion code that can be compared to a
+ * SCU_GET_COMPLETION_TL_STATUS.
+ */
+#define SCU_MAKE_COMPLETION_STATUS(completion_code) \
+	((u32)(completion_code) << SCU_COMPLETION_TL_STATUS_SHIFT)
+
+/**
+ * SCU_NORMALIZE_COMPLETION_STATUS() -
+ *
+ * This macro takes a SCU_GET_COMPLETION_TL_STATUS and normalizes it for a
+ * return code.
+ */
+#define SCU_NORMALIZE_COMPLETION_STATUS(completion_code) \
+	(\
+		((completion_code) & SCU_COMPLETION_TL_STATUS_MASK) \
+		>> SCU_COMPLETION_TL_STATUS_SHIFT \
+	)
+
+/**
+ * SCU_GET_COMPLETION_SDMA_STATUS() -
+ *
+ * This macro returns the SDMA completion status.
+ */
+#define SCU_GET_COMPLETION_SDMA_STATUS(completion_code)	\
+	((completion_code) & SCU_COMPLETION_SDMA_STATUS_MASK)
+
+/**
+ * SCU_GET_COMPLETION_PEG() -
+ *
+ * This macro returns the Protocol Engine Group from the completion code.
+ */
+#define SCU_GET_COMPLETION_PEG(completion_code)	\
+	((completion_code) & SCU_COMPLETION_PEG_MASK)
+
+/**
+ * SCU_GET_COMPLETION_PORT() -
+ *
+ * This macro reuturns the logical port index from the completion code.
+ */
+#define SCU_GET_COMPLETION_PORT(completion_code) \
+	((completion_code) & SCU_COMPLETION_PORT_MASK)
+
+/**
+ * SCU_GET_PROTOCOL_ENGINE_INDEX() -
+ *
+ * This macro returns the PE index from the completion code.
+ */
+#define SCU_GET_PROTOCOL_ENGINE_INDEX(completion_code) \
+	(((completion_code) & SCU_COMPLETION_PE_MASK) >> SCU_COMPLETION_PE_SHIFT)
+
+/**
+ * SCU_GET_COMPLETION_INDEX() -
+ *
+ * This macro returns the index of the completion which is either a TCi or an
+ * RNi depending on the completion type.
+ */
+#define SCU_GET_COMPLETION_INDEX(completion_code) \
+	((completion_code) & SCU_COMPLETION_INDEX_MASK)
+
+#define SCU_UNSOLICITED_FRAME_MASK     0x0FFF0000
+#define SCU_UNSOLICITED_FRAME_SHIFT    16
+
+/**
+ * SCU_GET_FRAME_INDEX() -
+ *
+ * This macro returns a normalized frame index from an unsolicited frame
+ * completion.
+ */
+#define SCU_GET_FRAME_INDEX(completion_code) \
+	(\
+		((completion_code) & SCU_UNSOLICITED_FRAME_MASK) \
+		>> SCU_UNSOLICITED_FRAME_SHIFT \
+	)
+
+#define SCU_UNSOLICITED_FRAME_ERROR_MASK  0x00008000
+
+/**
+ * SCU_GET_FRAME_ERROR() -
+ *
+ * This macro returns a zero (0) value if there is no frame error otherwise it
+ * returns non-zero (!0).
+ */
+#define SCU_GET_FRAME_ERROR(completion_code) \
+	((completion_code) & SCU_UNSOLICITED_FRAME_ERROR_MASK)
+
+/**
+ *
+ *
+ * These constants represent normalized completion codes which must be shifted
+ * 18 bits to match it with the hardware completion code. In a 16-bit compiler,
+ * immediate constants are 16-bit values (the size of an int). If we shift
+ * those by 18 bits, we completely lose the value. To ensure the value is a
+ * 32-bit value like we want, each immediate value must be cast to a u32.
+ */
+#define SCU_TASK_DONE_GOOD                                  ((u32)0x00)
+#define SCU_TASK_DONE_CRC_ERR                               ((u32)0x14)
+#define SCU_TASK_DONE_CHECK_RESPONSE                        ((u32)0x14)
+#define SCU_TASK_DONE_GEN_RESPONSE                          ((u32)0x15)
+#define SCU_TASK_DONE_NAK_CMD_ERR                           ((u32)0x16)
+#define SCU_TASK_DONE_CMD_LL_R_ERR                          ((u32)0x16)
+#define SCU_TASK_DONE_LL_R_ERR                              ((u32)0x17)
+#define SCU_TASK_DONE_ACK_NAK_TO                            ((u32)0x17)
+#define SCU_TASK_DONE_LL_PERR                               ((u32)0x18)
+#define SCU_TASK_DONE_LL_SY_TERM                            ((u32)0x19)
+#define SCU_TASK_DONE_NAK_ERR                               ((u32)0x19)
+#define SCU_TASK_DONE_LL_LF_TERM                            ((u32)0x1A)
+#define SCU_TASK_DONE_DATA_LEN_ERR                          ((u32)0x1A)
+#define SCU_TASK_DONE_LL_CL_TERM                            ((u32)0x1B)
+#define SCU_TASK_DONE_LL_ABORT_ERR                          ((u32)0x1B)
+#define SCU_TASK_DONE_SEQ_INV_TYPE                          ((u32)0x1C)
+#define SCU_TASK_DONE_UNEXP_XR                              ((u32)0x1C)
+#define SCU_TASK_DONE_INV_FIS_TYPE                          ((u32)0x1D)
+#define SCU_TASK_DONE_XR_IU_LEN_ERR                         ((u32)0x1D)
+#define SCU_TASK_DONE_INV_FIS_LEN                           ((u32)0x1E)
+#define SCU_TASK_DONE_XR_WD_LEN                             ((u32)0x1E)
+#define SCU_TASK_DONE_SDMA_ERR                              ((u32)0x1F)
+#define SCU_TASK_DONE_OFFSET_ERR                            ((u32)0x20)
+#define SCU_TASK_DONE_MAX_PLD_ERR                           ((u32)0x21)
+#define SCU_TASK_DONE_EXCESS_DATA                           ((u32)0x22)
+#define SCU_TASK_DONE_LF_ERR                                ((u32)0x23)
+#define SCU_TASK_DONE_UNEXP_FIS                             ((u32)0x24)
+#define SCU_TASK_DONE_UNEXP_RESP                            ((u32)0x24)
+#define SCU_TASK_DONE_EARLY_RESP                            ((u32)0x25)
+#define SCU_TASK_DONE_SMP_RESP_TO_ERR                       ((u32)0x26)
+#define SCU_TASK_DONE_DMASETUP_DIRERR                       ((u32)0x27)
+#define SCU_TASK_DONE_SMP_UFI_ERR                           ((u32)0x27)
+#define SCU_TASK_DONE_XFERCNT_ERR                           ((u32)0x28)
+#define SCU_TASK_DONE_SMP_FRM_TYPE_ERR                      ((u32)0x28)
+#define SCU_TASK_DONE_SMP_LL_RX_ERR                         ((u32)0x29)
+#define SCU_TASK_DONE_RESP_LEN_ERR                          ((u32)0x2A)
+#define SCU_TASK_DONE_UNEXP_DATA                            ((u32)0x2B)
+#define SCU_TASK_DONE_OPEN_FAIL                             ((u32)0x2C)
+#define SCU_TASK_DONE_UNEXP_SDBFIS                          ((u32)0x2D)
+#define SCU_TASK_DONE_REG_ERR                               ((u32)0x2E)
+#define SCU_TASK_DONE_SDB_ERR                               ((u32)0x2F)
+#define SCU_TASK_DONE_TASK_ABORT                            ((u32)0x30)
+#define SCU_TASK_DONE_CMD_SDMA_ERR                          ((U32)0x32)
+#define SCU_TASK_DONE_CMD_LL_ABORT_ERR                      ((U32)0x33)
+#define SCU_TASK_OPEN_REJECT_WRONG_DESTINATION              ((u32)0x34)
+#define SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1             ((u32)0x35)
+#define SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2             ((u32)0x36)
+#define SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3             ((u32)0x37)
+#define SCU_TASK_OPEN_REJECT_BAD_DESTINATION                ((u32)0x38)
+#define SCU_TASK_OPEN_REJECT_ZONE_VIOLATION                 ((u32)0x39)
+#define SCU_TASK_DONE_VIIT_ENTRY_NV                         ((u32)0x3A)
+#define SCU_TASK_DONE_IIT_ENTRY_NV                          ((u32)0x3B)
+#define SCU_TASK_DONE_RNCNV_OUTBOUND                        ((u32)0x3C)
+#define SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY             ((u32)0x3D)
+#define SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED         ((u32)0x3E)
+#define SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED  ((u32)0x3F)
+
+#endif /* _SCU_COMPLETION_CODES_HEADER_ */
diff --git a/drivers/scsi/isci/scu_event_codes.h b/drivers/scsi/isci/scu_event_codes.h
new file mode 100644
index 0000000..36a945a
--- /dev/null
+++ b/drivers/scsi/isci/scu_event_codes.h
@@ -0,0 +1,336 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __SCU_EVENT_CODES_HEADER__
+#define __SCU_EVENT_CODES_HEADER__
+
+/**
+ * This file contains the constants and macros for the SCU event codes.
+ *
+ *
+ */
+
+#define SCU_EVENT_TYPE_CODE_SHIFT      24
+#define SCU_EVENT_TYPE_CODE_MASK       0x0F000000
+
+#define SCU_EVENT_SPECIFIC_CODE_SHIFT  18
+#define SCU_EVENT_SPECIFIC_CODE_MASK   0x00FC0000
+
+#define SCU_EVENT_CODE_MASK \
+	(SCU_EVENT_TYPE_CODE_MASK | SCU_EVENT_SPECIFIC_CODE_MASK)
+
+/**
+ * SCU_EVENT_TYPE() -
+ *
+ * This macro constructs an SCU event type from the type value.
+ */
+#define SCU_EVENT_TYPE(type) \
+	((u32)(type) << SCU_EVENT_TYPE_CODE_SHIFT)
+
+/**
+ * SCU_EVENT_SPECIFIC() -
+ *
+ * This macro constructs an SCU event specifier from the code value.
+ */
+#define SCU_EVENT_SPECIFIC(code) \
+	((u32)(code) << SCU_EVENT_SPECIFIC_CODE_SHIFT)
+
+/**
+ * SCU_EVENT_MESSAGE() -
+ *
+ * This macro constructs a combines an SCU event type and SCU event specifier
+ * from the type and code values.
+ */
+#define SCU_EVENT_MESSAGE(type, code) \
+	((type) | SCU_EVENT_SPECIFIC(code))
+
+/**
+ * SCU_EVENT_TYPE() -
+ *
+ * SCU_EVENT_TYPES
+ */
+#define SCU_EVENT_TYPE_SMU_COMMAND_ERROR  SCU_EVENT_TYPE(0x08)
+#define SCU_EVENT_TYPE_SMU_PCQ_ERROR      SCU_EVENT_TYPE(0x09)
+#define SCU_EVENT_TYPE_SMU_ERROR          SCU_EVENT_TYPE(0x00)
+#define SCU_EVENT_TYPE_TRANSPORT_ERROR    SCU_EVENT_TYPE(0x01)
+#define SCU_EVENT_TYPE_BROADCAST_CHANGE   SCU_EVENT_TYPE(0x02)
+#define SCU_EVENT_TYPE_OSSP_EVENT         SCU_EVENT_TYPE(0x03)
+#define SCU_EVENT_TYPE_FATAL_MEMORY_ERROR SCU_EVENT_TYPE(0x0F)
+#define SCU_EVENT_TYPE_RNC_SUSPEND_TX     SCU_EVENT_TYPE(0x04)
+#define SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX  SCU_EVENT_TYPE(0x05)
+#define SCU_EVENT_TYPE_RNC_OPS_MISC       SCU_EVENT_TYPE(0x06)
+#define SCU_EVENT_TYPE_PTX_SCHEDULE_EVENT SCU_EVENT_TYPE(0x07)
+#define SCU_EVENT_TYPE_ERR_CNT_EVENT      SCU_EVENT_TYPE(0x0A)
+
+/**
+ *
+ *
+ * SCU_EVENT_SPECIFIERS
+ */
+#define SCU_EVENT_SPECIFIER_DRIVER_SUSPEND 0x20
+#define SCU_EVENT_SPECIFIER_RNC_RELEASE    0x00
+
+/**
+ *
+ *
+ * SMU_COMMAND_EVENTS
+ */
+#define SCU_EVENT_INVALID_CONTEXT_COMMAND \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_SMU_COMMAND_ERROR, 0x00)
+
+/**
+ *
+ *
+ * SMU_PCQ_EVENTS
+ */
+#define SCU_EVENT_UNCORRECTABLE_PCQ_ERROR \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_SMU_PCQ_ERROR, 0x00)
+
+/**
+ *
+ *
+ * SMU_EVENTS
+ */
+#define SCU_EVENT_UNCORRECTABLE_REGISTER_WRITE \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_SMU_ERROR, 0x02)
+#define SCU_EVENT_UNCORRECTABLE_REGISTER_READ \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_SMU_ERROR, 0x03)
+#define SCU_EVENT_PCIE_INTERFACE_ERROR \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_SMU_ERROR, 0x04)
+#define SCU_EVENT_FUNCTION_LEVEL_RESET \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_SMU_ERROR, 0x05)
+
+/**
+ *
+ *
+ * TRANSPORT_LEVEL_ERRORS
+ */
+#define SCU_EVENT_ACK_NAK_TIMEOUT_ERROR	\
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_TRANSPORT_ERROR, 0x00)
+
+/**
+ *
+ *
+ * BROADCAST_CHANGE_EVENTS
+ */
+#define SCU_EVENT_BROADCAST_CHANGE \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_BROADCAST_CHANGE, 0x01)
+#define SCU_EVENT_BROADCAST_RESERVED0 \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_BROADCAST_CHANGE, 0x02)
+#define SCU_EVENT_BROADCAST_RESERVED1 \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_BROADCAST_CHANGE, 0x03)
+#define SCU_EVENT_BROADCAST_SES	\
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_BROADCAST_CHANGE, 0x04)
+#define SCU_EVENT_BROADCAST_EXPANDER \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_BROADCAST_CHANGE, 0x05)
+#define SCU_EVENT_BROADCAST_AEN	\
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_BROADCAST_CHANGE, 0x06)
+#define SCU_EVENT_BROADCAST_RESERVED3 \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_BROADCAST_CHANGE, 0x07)
+#define SCU_EVENT_BROADCAST_RESERVED4 \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_BROADCAST_CHANGE, 0x08)
+#define SCU_EVENT_PE_SUSPENDED \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_BROADCAST_CHANGE, 0x09)
+
+/**
+ *
+ *
+ * OSSP_EVENTS
+ */
+#define SCU_EVENT_PORT_SELECTOR_DETECTED \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x10)
+#define SCU_EVENT_SENT_PORT_SELECTION \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x11)
+#define SCU_EVENT_HARD_RESET_TRANSMITTED \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x12)
+#define SCU_EVENT_HARD_RESET_RECEIVED \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x13)
+#define SCU_EVENT_RECEIVED_IDENTIFY_TIMEOUT \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x15)
+#define SCU_EVENT_LINK_FAILURE \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x16)
+#define SCU_EVENT_SATA_SPINUP_HOLD \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x17)
+#define SCU_EVENT_SAS_15_SSC \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x18)
+#define SCU_EVENT_SAS_15 \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x19)
+#define SCU_EVENT_SAS_30_SSC \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x1A)
+#define SCU_EVENT_SAS_30 \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x1B)
+#define SCU_EVENT_SAS_60_SSC \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x1C)
+#define SCU_EVENT_SAS_60 \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x1D)
+#define SCU_EVENT_SATA_15_SSC \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x1E)
+#define SCU_EVENT_SATA_15 \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x1F)
+#define SCU_EVENT_SATA_30_SSC \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x20)
+#define SCU_EVENT_SATA_30 \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x21)
+#define SCU_EVENT_SATA_60_SSC \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x22)
+#define SCU_EVENT_SATA_60 \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x23)
+#define SCU_EVENT_SAS_PHY_DETECTED \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x24)
+#define SCU_EVENT_SATA_PHY_DETECTED \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_OSSP_EVENT, 0x25)
+
+/**
+ *
+ *
+ * FATAL_INTERNAL_MEMORY_ERROR_EVENTS
+ */
+#define SCU_EVENT_TSC_RNSC_UNCORRECTABLE_ERROR \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_FATAL_MEMORY_ERROR,  0x00)
+#define SCU_EVENT_TC_RNC_UNCORRECTABLE_ERROR \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_FATAL_MEMORY_ERROR,  0x01)
+#define SCU_EVENT_ZPT_UNCORRECTABLE_ERROR \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_FATAL_MEMORY_ERROR,  0x02)
+
+/**
+ *
+ *
+ * REMOTE_NODE_SUSPEND_EVENTS
+ */
+#define SCU_EVENT_TL_RNC_SUSPEND_TX \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_RNC_SUSPEND_TX, 0x00)
+#define SCU_EVENT_TL_RNC_SUSPEND_TX_RX \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX, 0x00)
+#define SCU_EVENT_DRIVER_POST_RNC_SUSPEND_TX \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_RNC_SUSPEND_TX, 0x20)
+#define SCU_EVENT_DRIVER_POST_RNC_SUSPEND_TX_RX	\
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX, 0x20)
+
+/**
+ *
+ *
+ * REMOTE_NODE_MISC_EVENTS
+ */
+#define SCU_EVENT_POST_RCN_RELEASE \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_RNC_OPS_MISC, SCU_EVENT_SPECIFIER_RNC_RELEASE)
+#define SCU_EVENT_POST_IT_NEXUS_LOSS_TIMER_ENABLE \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_RNC_OPS_MISC, 0x01)
+#define SCU_EVENT_POST_IT_NEXUS_LOSS_TIMER_DISABLE \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_RNC_OPS_MISC, 0x02)
+#define SCU_EVENT_POST_RNC_COMPLETE \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_RNC_OPS_MISC, 0x03)
+#define SCU_EVENT_POST_RNC_INVALIDATE_COMPLETE \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_RNC_OPS_MISC, 0x04)
+
+/**
+ *
+ *
+ * ERROR_COUNT_EVENT
+ */
+#define SCU_EVENT_RX_CREDIT_BLOCKED_RECEIVED \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_ERR_CNT_EVENT, 0x00)
+#define SCU_EVENT_TX_DONE_CREDIT_TIMEOUT \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_ERR_CNT_EVENT, 0x01)
+#define SCU_EVENT_RX_DONE_CREDIT_TIMEOUT \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_ERR_CNT_EVENT, 0x02)
+
+/**
+ * scu_get_event_type() -
+ *
+ * This macro returns the SCU event type from the event code.
+ */
+#define scu_get_event_type(event_code) \
+	((event_code) & SCU_EVENT_TYPE_CODE_MASK)
+
+/**
+ * scu_get_event_specifier() -
+ *
+ * This macro returns the SCU event specifier from the event code.
+ */
+#define scu_get_event_specifier(event_code) \
+	((event_code) & SCU_EVENT_SPECIFIC_CODE_MASK)
+
+/**
+ * scu_get_event_code() -
+ *
+ * This macro returns the combined SCU event type and SCU event specifier from
+ * the event code.
+ */
+#define scu_get_event_code(event_code) \
+	((event_code) & SCU_EVENT_CODE_MASK)
+
+
+/**
+ *
+ *
+ * PTS_SCHEDULE_EVENT
+ */
+#define SCU_EVENT_SMP_RESPONSE_NO_PE \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_PTX_SCHEDULE_EVENT, 0x00)
+#define SCU_EVENT_SPECIFIC_SMP_RESPONSE_NO_PE \
+	scu_get_event_specifier(SCU_EVENT_SMP_RESPONSE_NO_PE)
+
+#define SCU_EVENT_TASK_TIMEOUT \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_PTX_SCHEDULE_EVENT, 0x01)
+#define SCU_EVENT_SPECIFIC_TASK_TIMEOUT	\
+	scu_get_event_specifier(SCU_EVENT_TASK_TIMEOUT)
+
+#define SCU_EVENT_IT_NEXUS_TIMEOUT \
+	SCU_EVENT_MESSAGE(SCU_EVENT_TYPE_PTX_SCHEDULE_EVENT, 0x02)
+#define SCU_EVENT_SPECIFIC_IT_NEXUS_TIMEOUT \
+	scu_get_event_specifier(SCU_EVENT_IT_NEXUS_TIMEOUT)
+
+
+#endif /* __SCU_EVENT_CODES_HEADER__ */
diff --git a/drivers/scsi/isci/scu_remote_node_context.h b/drivers/scsi/isci/scu_remote_node_context.h
new file mode 100644
index 0000000..33745ad
--- /dev/null
+++ b/drivers/scsi/isci/scu_remote_node_context.h
@@ -0,0 +1,229 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __SCU_REMOTE_NODE_CONTEXT_HEADER__
+#define __SCU_REMOTE_NODE_CONTEXT_HEADER__
+
+/**
+ * This file contains the structures and constatns used by the SCU hardware to
+ *    describe a remote node context.
+ *
+ *
+ */
+
+/**
+ * struct ssp_remote_node_context - This structure contains the SCU hardware
+ *    definition for an SSP remote node.
+ *
+ *
+ */
+struct ssp_remote_node_context {
+	/* WORD 0 */
+
+	/**
+	 * This field is the remote node index assigned for this remote node. All
+	 * remote nodes must have a unique remote node index. The value of the remote
+	 * node index can not exceed the maximum number of remote nodes reported in
+	 * the SCU device context capacity register.
+	 */
+	u32 remote_node_index:12;
+	u32 reserved0_1:4;
+
+	/**
+	 * This field tells the SCU hardware how many simultaneous connections that
+	 * this remote node will support.
+	 */
+	u32 remote_node_port_width:4;
+
+	/**
+	 * This field tells the SCU hardware which logical port to associate with this
+	 * remote node.
+	 */
+	u32 logical_port_index:3;
+	u32 reserved0_2:5;
+
+	/**
+	 * This field will enable the I_T nexus loss timer for this remote node.
+	 */
+	u32 nexus_loss_timer_enable:1;
+
+	/**
+	 * This field is the for driver debug only and is not used.
+	 */
+	u32 check_bit:1;
+
+	/**
+	 * This field must be set to true when the hardware DMAs the remote node
+	 * context to the hardware SRAM.  When the remote node is being invalidated
+	 * this field must be set to false.
+	 */
+	u32 is_valid:1;
+
+	/**
+	 * This field must be set to true.
+	 */
+	u32 is_remote_node_context:1;
+
+	/* WORD 1 - 2 */
+
+	/**
+	 * This is the low word of the remote device SAS Address
+	 */
+	u32 remote_sas_address_lo;
+
+	/**
+	 * This field is the high word of the remote device SAS Address
+	 */
+	u32 remote_sas_address_hi;
+
+	/* WORD 3 */
+	/**
+	 * This field reprensets the function number assigned to this remote device.
+	 * This value must match the virtual function number that is being used to
+	 * communicate to the device.
+	 */
+	u32 function_number:8;
+	u32 reserved3_1:8;
+
+	/**
+	 * This field provides the driver a way to cheat on the arbitration wait time
+	 * for this remote node.
+	 */
+	u32 arbitration_wait_time:16;
+
+	/* WORD 4 */
+	/**
+	 * This field tells the SCU hardware how long this device may occupy the
+	 * connection before it must be closed.
+	 */
+	u32 connection_occupancy_timeout:16;
+
+	/**
+	 * This field tells the SCU hardware how long to maintain a connection when
+	 * there are no frames being transmitted on the link.
+	 */
+	u32 connection_inactivity_timeout:16;
+
+	/* WORD  5 */
+	/**
+	 * This field allows the driver to cheat on the arbitration wait time for this
+	 * remote node.
+	 */
+	u32 initial_arbitration_wait_time:16;
+
+	/**
+	 * This field is tells the hardware what to program for the connection rate in
+	 * the open address frame.  See the SAS spec for valid values.
+	 */
+	u32 oaf_connection_rate:4;
+
+	/**
+	 * This field tells the SCU hardware what to program for the features in the
+	 * open address frame.  See the SAS spec for valid values.
+	 */
+	u32 oaf_features:4;
+
+	/**
+	 * This field tells the SCU hardware what to use for the source zone group in
+	 * the open address frame.  See the SAS spec for more details on zoning.
+	 */
+	u32 oaf_source_zone_group:8;
+
+	/* WORD 6 */
+	/**
+	 * This field tells the SCU hardware what to use as the more capibilities in
+	 * the open address frame. See the SAS Spec for details.
+	 */
+	u32 oaf_more_compatibility_features;
+
+	/* WORD 7 */
+	u32 reserved7;
+
+};
+
+/**
+ * struct stp_remote_node_context - This structure contains the SCU hardware
+ *    definition for a STP remote node.
+ *
+ * STP Targets are not yet supported so this definition is a placeholder until
+ * we do support them.
+ */
+struct stp_remote_node_context {
+	/**
+	 * Placeholder data for the STP remote node.
+	 */
+	u32 data[8];
+
+};
+
+/**
+ * This union combines the SAS and SATA remote node definitions.
+ *
+ * union scu_remote_node_context
+ */
+union scu_remote_node_context {
+	/**
+	 * SSP Remote Node
+	 */
+	struct ssp_remote_node_context ssp;
+
+	/**
+	 * STP Remote Node
+	 */
+	struct stp_remote_node_context stp;
+
+};
+
+#endif /* __SCU_REMOTE_NODE_CONTEXT_HEADER__ */
diff --git a/drivers/scsi/isci/scu_task_context.h b/drivers/scsi/isci/scu_task_context.h
new file mode 100644
index 0000000..7df87d9
--- /dev/null
+++ b/drivers/scsi/isci/scu_task_context.h
@@ -0,0 +1,942 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _SCU_TASK_CONTEXT_H_
+#define _SCU_TASK_CONTEXT_H_
+
+/**
+ * This file contains the structures and constants for the SCU hardware task
+ *    context.
+ *
+ *
+ */
+
+
+/**
+ * enum scu_ssp_task_type - This enumberation defines the various SSP task
+ *    types the SCU hardware will accept. The definition for the various task
+ *    types the SCU hardware will accept can be found in the DS specification.
+ *
+ *
+ */
+typedef enum {
+	SCU_TASK_TYPE_IOREAD,           /* /< IO READ direction or no direction */
+	SCU_TASK_TYPE_IOWRITE,          /* /< IO Write direction */
+	SCU_TASK_TYPE_SMP_REQUEST,      /* /< SMP Request type */
+	SCU_TASK_TYPE_RESPONSE,         /* /< Driver generated response frame (targt mode) */
+	SCU_TASK_TYPE_RAW_FRAME,        /* /< Raw frame request type */
+	SCU_TASK_TYPE_PRIMITIVE         /* /< Request for a primitive to be transmitted */
+} scu_ssp_task_type;
+
+/**
+ * enum scu_sata_task_type - This enumeration defines the various SATA task
+ *    types the SCU hardware will accept. The definition for the various task
+ *    types the SCU hardware will accept can be found in the DS specification.
+ *
+ *
+ */
+typedef enum {
+	SCU_TASK_TYPE_DMA_IN,           /* /< Read request */
+	SCU_TASK_TYPE_FPDMAQ_READ,      /* /< NCQ read request */
+	SCU_TASK_TYPE_PACKET_DMA_IN,    /* /< Packet read request */
+	SCU_TASK_TYPE_SATA_RAW_FRAME,   /* /< Raw frame request */
+	RESERVED_4,
+	RESERVED_5,
+	RESERVED_6,
+	RESERVED_7,
+	SCU_TASK_TYPE_DMA_OUT,          /* /< Write request */
+	SCU_TASK_TYPE_FPDMAQ_WRITE,     /* /< NCQ write Request */
+	SCU_TASK_TYPE_PACKET_DMA_OUT    /* /< Packet write request */
+} scu_sata_task_type;
+
+
+/**
+ *
+ *
+ * SCU_CONTEXT_TYPE
+ */
+#define SCU_TASK_CONTEXT_TYPE  0
+#define SCU_RNC_CONTEXT_TYPE   1
+
+/**
+ *
+ *
+ * SCU_TASK_CONTEXT_VALIDITY
+ */
+#define SCU_TASK_CONTEXT_INVALID          0
+#define SCU_TASK_CONTEXT_VALID            1
+
+/**
+ *
+ *
+ * SCU_COMMAND_CODE
+ */
+#define SCU_COMMAND_CODE_INITIATOR_NEW_TASK   0
+#define SCU_COMMAND_CODE_ACTIVE_TASK          1
+#define SCU_COMMAND_CODE_PRIMITIVE_SEQ_TASK   2
+#define SCU_COMMAND_CODE_TARGET_RAW_FRAMES    3
+
+/**
+ *
+ *
+ * SCU_TASK_PRIORITY
+ */
+/**
+ *
+ *
+ * This priority is used when there is no priority request for this request.
+ */
+#define SCU_TASK_PRIORITY_NORMAL          0
+
+/**
+ *
+ *
+ * This priority indicates that the task should be scheduled to the head of the
+ * queue.  The task will NOT be executed if the TX is suspended for the remote
+ * node.
+ */
+#define SCU_TASK_PRIORITY_HEAD_OF_Q       1
+
+/**
+ *
+ *
+ * This priority indicates that the task will be executed before all
+ * SCU_TASK_PRIORITY_NORMAL and SCU_TASK_PRIORITY_HEAD_OF_Q tasks. The task
+ * WILL be executed if the TX is suspended for the remote node.
+ */
+#define SCU_TASK_PRIORITY_HIGH            2
+
+/**
+ *
+ *
+ * This task priority is reserved and should not be used.
+ */
+#define SCU_TASK_PRIORITY_RESERVED        3
+
+#define SCU_TASK_INITIATOR_MODE           1
+#define SCU_TASK_TARGET_MODE              0
+
+#define SCU_TASK_REGULAR                  0
+#define SCU_TASK_ABORTED                  1
+
+/* direction bit defintion */
+/**
+ *
+ *
+ * SATA_DIRECTION
+ */
+#define SCU_SATA_WRITE_DATA_DIRECTION     0
+#define SCU_SATA_READ_DATA_DIRECTION      1
+
+/**
+ *
+ *
+ * SCU_COMMAND_CONTEXT_MACROS These macros provide the mask and shift
+ * operations to construct the various SCU commands
+ */
+#define SCU_CONTEXT_COMMAND_REQUEST_TYPE_SHIFT           21
+#define SCU_CONTEXT_COMMAND_REQUEST_TYPE_MASK            0x00E00000
+#define scu_get_command_request_type(x)	\
+	((x) & SCU_CONTEXT_COMMAND_REQUEST_TYPE_MASK)
+
+#define SCU_CONTEXT_COMMAND_REQUEST_SUBTYPE_SHIFT        18
+#define SCU_CONTEXT_COMMAND_REQUEST_SUBTYPE_MASK         0x001C0000
+#define scu_get_command_request_subtype(x) \
+	((x) & SCU_CONTEXT_COMMAND_REQUEST_SUBTYPE_MASK)
+
+#define SCU_CONTEXT_COMMAND_REQUEST_FULLTYPE_MASK	 \
+	(\
+		SCU_CONTEXT_COMMAND_REQUEST_TYPE_MASK		  \
+		| SCU_CONTEXT_COMMAND_REQUEST_SUBTYPE_MASK	    \
+	)
+#define scu_get_command_request_full_type(x) \
+	((x) & SCU_CONTEXT_COMMAND_REQUEST_FULLTYPE_MASK)
+
+#define SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT  16
+#define SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_MASK   0x00010000
+#define scu_get_command_protocl_engine_group(x)	\
+	((x) & SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_MASK)
+
+#define SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT           12
+#define SCU_CONTEXT_COMMAND_LOGICAL_PORT_MASK            0x00007000
+#define scu_get_command_reqeust_logical_port(x)	\
+	((x) & SCU_CONTEXT_COMMAND_LOGICAL_PORT_MASK)
+
+
+#define MAKE_SCU_CONTEXT_COMMAND_TYPE(type) \
+	((u32)(type) << SCU_CONTEXT_COMMAND_REQUEST_TYPE_SHIFT)
+
+/**
+ * MAKE_SCU_CONTEXT_COMMAND_TYPE() -
+ *
+ * SCU_COMMAND_TYPES These constants provide the grouping of the different SCU
+ * command types.
+ */
+#define SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC    MAKE_SCU_CONTEXT_COMMAND_TYPE(0)
+#define SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_TC    MAKE_SCU_CONTEXT_COMMAND_TYPE(1)
+#define SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC   MAKE_SCU_CONTEXT_COMMAND_TYPE(2)
+#define SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_RNC   MAKE_SCU_CONTEXT_COMMAND_TYPE(3)
+#define SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC  MAKE_SCU_CONTEXT_COMMAND_TYPE(6)
+
+#define MAKE_SCU_CONTEXT_COMMAND_REQUEST(type, command)	\
+	((type) | ((command) << SCU_CONTEXT_COMMAND_REQUEST_SUBTYPE_SHIFT))
+
+/**
+ *
+ *
+ * SCU_REQUEST_TYPES These constants are the various request types that can be
+ * posted to the SCU hardware.
+ */
+#define SCU_CONTEXT_COMMAND_REQUST_POST_TC \
+	(MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC, 0))
+
+#define SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT \
+	(MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC, 1))
+
+#define SCU_CONTEXT_COMMAND_REQUST_DUMP_TC \
+	(MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_TC, 0))
+
+#define SCU_CONTEXT_COMMAND_POST_RNC_32	\
+	(MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC, 0))
+
+#define SCU_CONTEXT_COMMAND_POST_RNC_96	\
+	(MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC, 1))
+
+#define SCU_CONTEXT_COMMAND_POST_RNC_INVALIDATE	\
+	(MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC, 2))
+
+#define SCU_CONTEXT_COMMAND_DUMP_RNC_32	\
+	(MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_RNC, 0))
+
+#define SCU_CONTEXT_COMMAND_DUMP_RNC_96	\
+	(MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_RNC, 1))
+
+#define SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX	\
+	(MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC, 0))
+
+#define SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX_RX \
+	(MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC, 1))
+
+#define SCU_CONTEXT_COMMAND_POST_RNC_RESUME \
+	(MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC, 2))
+
+#define SCU_CONTEXT_IT_NEXUS_LOSS_TIMER_ENABLE \
+	(MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC, 3))
+
+#define SCU_CONTEXT_IT_NEXUS_LOSS_TIMER_DISABLE	\
+	(MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC, 4))
+
+/**
+ *
+ *
+ * SCU_TASK_CONTEXT_PROTOCOL SCU Task context protocol types this is uesd to
+ * program the SCU Task context protocol field in word 0x00.
+ */
+#define SCU_TASK_CONTEXT_PROTOCOL_SMP    0x00
+#define SCU_TASK_CONTEXT_PROTOCOL_SSP    0x01
+#define SCU_TASK_CONTEXT_PROTOCOL_STP    0x02
+#define SCU_TASK_CONTEXT_PROTOCOL_NONE   0x07
+
+/**
+ * struct ssp_task_context - This is the SCU hardware definition for an SSP
+ *    request.
+ *
+ *
+ */
+struct ssp_task_context {
+	/* OFFSET 0x18 */
+	u32 reserved00:24;
+	u32 frame_type:8;
+
+	/* OFFSET 0x1C */
+	u32 reserved01;
+
+	/* OFFSET 0x20 */
+	u32 fill_bytes:2;
+	u32 reserved02:6;
+	u32 changing_data_pointer:1;
+	u32 retransmit:1;
+	u32 retry_data_frame:1;
+	u32 tlr_control:2;
+	u32 reserved03:19;
+
+	/* OFFSET 0x24 */
+	u32 uiRsvd4;
+
+	/* OFFSET 0x28 */
+	u32 target_port_transfer_tag:16;
+	u32 tag:16;
+
+	/* OFFSET 0x2C */
+	u32 data_offset;
+};
+
+/**
+ * struct stp_task_context - This is the SCU hardware definition for an STP
+ *    request.
+ *
+ *
+ */
+struct stp_task_context {
+	/* OFFSET 0x18 */
+	u32 fis_type:8;
+	u32 pm_port:4;
+	u32 reserved0:3;
+	u32 control:1;
+	u32 command:8;
+	u32 features:8;
+
+	/* OFFSET 0x1C */
+	u32 reserved1;
+
+	/* OFFSET 0x20 */
+	u32 reserved2;
+
+	/* OFFSET 0x24 */
+	u32 reserved3;
+
+	/* OFFSET 0x28 */
+	u32 ncq_tag:5;
+	u32 reserved4:27;
+
+	/* OFFSET 0x2C */
+	u32 data_offset; /* TODO: What is this used for? */
+};
+
+/**
+ * struct smp_task_context - This is the SCU hardware definition for an SMP
+ *    request.
+ *
+ *
+ */
+struct smp_task_context {
+	/* OFFSET 0x18 */
+	u32 response_length:8;
+	u32 function_result:8;
+	u32 function:8;
+	u32 frame_type:8;
+
+	/* OFFSET 0x1C */
+	u32 smp_response_ufi:12;
+	u32 reserved1:20;
+
+	/* OFFSET 0x20 */
+	u32 reserved2;
+
+	/* OFFSET 0x24 */
+	u32 reserved3;
+
+	/* OFFSET 0x28 */
+	u32 reserved4;
+
+	/* OFFSET 0x2C */
+	u32 reserved5;
+};
+
+/**
+ * struct primitive_task_context - This is the SCU hardware definition used
+ *    when the driver wants to send a primitive on the link.
+ *
+ *
+ */
+struct primitive_task_context {
+	/* OFFSET 0x18 */
+	/**
+	 * This field is the control word and it must be 0.
+	 */
+	u32 control; /* /< must be set to 0 */
+
+	/* OFFSET 0x1C */
+	/**
+	 * This field specifies the primitive that is to be transmitted.
+	 */
+	u32 sequence;
+
+	/* OFFSET 0x20 */
+	u32 reserved0;
+
+	/* OFFSET 0x24 */
+	u32 reserved1;
+
+	/* OFFSET 0x28 */
+	u32 reserved2;
+
+	/* OFFSET 0x2C */
+	u32 reserved3;
+};
+
+/**
+ * The union of the protocols that can be selected in the SCU task context
+ *    field.
+ *
+ * protocol_context
+ */
+union protocol_context {
+	struct ssp_task_context ssp;
+	struct stp_task_context stp;
+	struct smp_task_context smp;
+	struct primitive_task_context primitive;
+	u32 words[6];
+};
+
+/**
+ * struct scu_sgl_element - This structure represents a single SCU defined SGL
+ *    element. SCU SGLs contain a 64 bit address with the maximum data transfer
+ *    being 24 bits in size.  The SGL can not cross a 4GB boundary.
+ *
+ * struct scu_sgl_element
+ */
+struct scu_sgl_element {
+	/**
+	 * This field is the upper 32 bits of the 64 bit physical address.
+	 */
+	u32 address_upper;
+
+	/**
+	 * This field is the lower 32 bits of the 64 bit physical address.
+	 */
+	u32 address_lower;
+
+	/**
+	 * This field is the number of bytes to transfer.
+	 */
+	u32 length:24;
+
+	/**
+	 * This field is the address modifier to be used when a virtual function is
+	 * requesting a data transfer.
+	 */
+	u32 address_modifier:8;
+
+};
+
+#define SCU_SGL_ELEMENT_PAIR_A   0
+#define SCU_SGL_ELEMENT_PAIR_B   1
+
+/**
+ * struct scu_sgl_element_pair - This structure is the SCU hardware definition
+ *    of a pair of SGL elements. The SCU hardware always works on SGL pairs.
+ *    They are refered to in the DS specification as SGL A and SGL B.  Each SGL
+ *    pair is followed by the address of the next pair.
+ *
+ *
+ */
+struct scu_sgl_element_pair {
+	/* OFFSET 0x60-0x68 */
+	/**
+	 * This field is the SGL element A of the SGL pair.
+	 */
+	struct scu_sgl_element A;
+
+	/* OFFSET 0x6C-0x74 */
+	/**
+	 * This field is the SGL element B of the SGL pair.
+	 */
+	struct scu_sgl_element B;
+
+	/* OFFSET 0x78-0x7C */
+	/**
+	 * This field is the upper 32 bits of the 64 bit address to the next SGL
+	 * element pair.
+	 */
+	u32 next_pair_upper;
+
+	/**
+	 * This field is the lower 32 bits of the 64 bit address to the next SGL
+	 * element pair.
+	 */
+	u32 next_pair_lower;
+
+};
+
+/**
+ * struct transport_snapshot - This structure is the SCU hardware scratch area
+ *    for the task context. This is set to 0 by the driver but can be read by
+ *    issuing a dump TC request to the SCU.
+ *
+ *
+ */
+struct transport_snapshot {
+	/* OFFSET 0x48 */
+	u32 xfer_rdy_write_data_length;
+
+	/* OFFSET 0x4C */
+	u32 data_offset;
+
+	/* OFFSET 0x50 */
+	u32 data_transfer_size:24;
+	u32 reserved_50_0:8;
+
+	/* OFFSET 0x54 */
+	u32 next_initiator_write_data_offset;
+
+	/* OFFSET 0x58 */
+	u32 next_initiator_write_data_xfer_size:24;
+	u32 reserved_58_0:8;
+};
+
+/**
+ * struct scu_task_context - This structure defines the contents of the SCU
+ *    silicon task context. It lays out all of the fields according to the
+ *    expected order and location for the Storage Controller unit.
+ *
+ *
+ */
+struct scu_task_context {
+	/* OFFSET 0x00 ------ */
+	/**
+	 * This field must be encoded to one of the valid SCU task priority values
+	 *    - SCU_TASK_PRIORITY_NORMAL
+	 *    - SCU_TASK_PRIORITY_HEAD_OF_Q
+	 *    - SCU_TASK_PRIORITY_HIGH
+	 */
+	u32 priority:2;
+
+	/**
+	 * This field must be set to true if this is an initiator generated request.
+	 * Until target mode is supported all task requests are initiator requests.
+	 */
+	u32 initiator_request:1;
+
+	/**
+	 * This field must be set to one of the valid connection rates valid values
+	 * are 0x8, 0x9, and 0xA.
+	 */
+	u32 connection_rate:4;
+
+	/**
+	 * This field muse be programed when generating an SMP response since the SMP
+	 * connection remains open until the SMP response is generated.
+	 */
+	u32 protocol_engine_index:3;
+
+	/**
+	 * This field must contain the logical port for the task request.
+	 */
+	u32 logical_port_index:3;
+
+	/**
+	 * This field must be set to one of the SCU_TASK_CONTEXT_PROTOCOL values
+	 *    - SCU_TASK_CONTEXT_PROTOCOL_SMP
+	 *    - SCU_TASK_CONTEXT_PROTOCOL_SSP
+	 *    - SCU_TASK_CONTEXT_PROTOCOL_STP
+	 *    - SCU_TASK_CONTEXT_PROTOCOL_NONE
+	 */
+	u32 protocol_type:3;
+
+	/**
+	 * This filed must be set to the TCi allocated for this task
+	 */
+	u32 task_index:12;
+
+	/**
+	 * This field is reserved and must be set to 0x00
+	 */
+	u32 reserved_00_0:1;
+
+	/**
+	 * For a normal task request this must be set to 0.  If this is an abort of
+	 * this task request it must be set to 1.
+	 */
+	u32 abort:1;
+
+	/**
+	 * This field must be set to true for the SCU hardware to process the task.
+	 */
+	u32 valid:1;
+
+	/**
+	 * This field must be set to SCU_TASK_CONTEXT_TYPE
+	 */
+	u32 context_type:1;
+
+	/* OFFSET 0x04 */
+	/**
+	 * This field contains the RNi that is the target of this request.
+	 */
+	u32 remote_node_index:12;
+
+	/**
+	 * This field is programmed if this is a mirrored request, which we are not
+	 * using, in which case it is the RNi for the mirrored target.
+	 */
+	u32 mirrored_node_index:12;
+
+	/**
+	 * This field is programmed with the direction of the SATA reqeust
+	 *    - SCU_SATA_WRITE_DATA_DIRECTION
+	 *    - SCU_SATA_READ_DATA_DIRECTION
+	 */
+	u32 sata_direction:1;
+
+	/**
+	 * This field is programmsed with one of the following SCU_COMMAND_CODE
+	 *    - SCU_COMMAND_CODE_INITIATOR_NEW_TASK
+	 *    - SCU_COMMAND_CODE_ACTIVE_TASK
+	 *    - SCU_COMMAND_CODE_PRIMITIVE_SEQ_TASK
+	 *    - SCU_COMMAND_CODE_TARGET_RAW_FRAMES
+	 */
+	u32 command_code:2;
+
+	/**
+	 * This field is set to true if the remote node should be suspended.
+	 * This bit is only valid for SSP & SMP target devices.
+	 */
+	u32 suspend_node:1;
+
+	/**
+	 * This field is programmed with one of the following command type codes
+	 *
+	 * For SAS requests use the scu_ssp_task_type
+	 *    - SCU_TASK_TYPE_IOREAD
+	 *    - SCU_TASK_TYPE_IOWRITE
+	 *    - SCU_TASK_TYPE_SMP_REQUEST
+	 *    - SCU_TASK_TYPE_RESPONSE
+	 *    - SCU_TASK_TYPE_RAW_FRAME
+	 *    - SCU_TASK_TYPE_PRIMITIVE
+	 *
+	 * For SATA requests use the scu_sata_task_type
+	 *    - SCU_TASK_TYPE_DMA_IN
+	 *    - SCU_TASK_TYPE_FPDMAQ_READ
+	 *    - SCU_TASK_TYPE_PACKET_DMA_IN
+	 *    - SCU_TASK_TYPE_SATA_RAW_FRAME
+	 *    - SCU_TASK_TYPE_DMA_OUT
+	 *    - SCU_TASK_TYPE_FPDMAQ_WRITE
+	 *    - SCU_TASK_TYPE_PACKET_DMA_OUT
+	 */
+	u32 task_type:4;
+
+	/* OFFSET 0x08 */
+	/**
+	 * This field is reserved and the must be set to 0x00
+	 */
+	u32 link_layer_control:8; /* presently all reserved */
+
+	/**
+	 * This field is set to true when TLR is to be enabled
+	 */
+	u32 ssp_tlr_enable:1;
+
+	/**
+	 * This is field specifies if the SCU DMAs a response frame to host
+	 * memory for good response frames when operating in target mode.
+	 */
+	u32 dma_ssp_target_good_response:1;
+
+	/**
+	 * This field indicates if the SCU should DMA the response frame to
+	 * host memory.
+	 */
+	u32 do_not_dma_ssp_good_response:1;
+
+	/**
+	 * This field is set to true when strict ordering is to be enabled
+	 */
+	u32 strict_ordering:1;
+
+	/**
+	 * This field indicates the type of endianess to be utilized for the
+	 * frame.  command, task, and response frames utilized control_frame
+	 * set to 1.
+	 */
+	u32 control_frame:1;
+
+	/**
+	 * This field is reserved and the driver should set to 0x00
+	 */
+	u32 tl_control_reserved:3;
+
+	/**
+	 * This field is set to true when the SCU hardware task timeout control is to
+	 * be enabled
+	 */
+	u32 timeout_enable:1;
+
+	/**
+	 * This field is reserved and the driver should set it to 0x00
+	 */
+	u32 pts_control_reserved:7;
+
+	/**
+	 * This field should be set to true when block guard is to be enabled
+	 */
+	u32 block_guard_enable:1;
+
+	/**
+	 * This field is reserved and the driver should set to 0x00
+	 */
+	u32 sdma_control_reserved:7;
+
+	/* OFFSET 0x0C */
+	/**
+	 * This field is the address modifier for this io request it should be
+	 * programmed with the virtual function that is making the request.
+	 */
+	u32 address_modifier:16;
+
+	/**
+	 * @todo What we support mirrored SMP response frame?
+	 */
+	u32 mirrored_protocol_engine:3;  /* mirrored protocol Engine Index */
+
+	/**
+	 * If this is a mirrored request the logical port index for the mirrored RNi
+	 * must be programmed.
+	 */
+	u32 mirrored_logical_port:4;  /* mirrored local port index */
+
+	/**
+	 * This field is reserved and the driver must set it to 0x00
+	 */
+	u32 reserved_0C_0:8;
+
+	/**
+	 * This field must be set to true if the mirrored request processing is to be
+	 * enabled.
+	 */
+	u32 mirror_request_enable:1;  /* Mirrored request Enable */
+
+	/* OFFSET 0x10 */
+	/**
+	 * This field is the command iu length in dwords
+	 */
+	u32 ssp_command_iu_length:8;
+
+	/**
+	 * This is the target TLR enable bit it must be set to 0 when creatning the
+	 * task context.
+	 */
+	u32 xfer_ready_tlr_enable:1;
+
+	/**
+	 * This field is reserved and the driver must set it to 0x00
+	 */
+	u32 reserved_10_0:7;
+
+	/**
+	 * This is the maximum burst size that the SCU hardware will send in one
+	 * connection its value is (N x 512) and N must be a multiple of 2.  If the
+	 * value is 0x00 then maximum burst size is disabled.
+	 */
+	u32 ssp_max_burst_size:16;
+
+	/* OFFSET 0x14 */
+	/**
+	 * This filed is set to the number of bytes to be transfered in the request.
+	 */
+	u32 transfer_length_bytes:24; /* In terms of bytes */
+
+	/**
+	 * This field is reserved and the driver should set it to 0x00
+	 */
+	u32 reserved_14_0:8;
+
+	/* OFFSET 0x18-0x2C */
+	/**
+	 * This union provides for the protocol specif part of the SCU Task Context.
+	 */
+	union protocol_context type;
+
+	/* OFFSET 0x30-0x34 */
+	/**
+	 * This field is the upper 32 bits of the 64 bit physical address of the
+	 * command iu buffer
+	 */
+	u32 command_iu_upper;
+
+	/**
+	 * This field is the lower 32 bits of the 64 bit physical address of the
+	 * command iu buffer
+	 */
+	u32 command_iu_lower;
+
+	/* OFFSET 0x38-0x3C */
+	/**
+	 * This field is the upper 32 bits of the 64 bit physical address of the
+	 * response iu buffer
+	 */
+	u32 response_iu_upper;
+
+	/**
+	 * This field is the lower 32 bits of the 64 bit physical address of the
+	 * response iu buffer
+	 */
+	u32 response_iu_lower;
+
+	/* OFFSET 0x40 */
+	/**
+	 * This field is set to the task phase of the SCU hardware. The driver must
+	 * set this to 0x01
+	 */
+	u32 task_phase:8;
+
+	/**
+	 * This field is set to the transport layer task status.  The driver must set
+	 * this to 0x00
+	 */
+	u32 task_status:8;
+
+	/**
+	 * This field is used during initiator write TLR
+	 */
+	u32 previous_extended_tag:4;
+
+	/**
+	 * This field is set the maximum number of retries for a STP non-data FIS
+	 */
+	u32 stp_retry_count:2;
+
+	/**
+	 * This field is reserved and the driver must set it to 0x00
+	 */
+	u32 reserved_40_1:2;
+
+	/**
+	 * This field is used by the SCU TL to determine when to take a snapshot when
+	 * tranmitting read data frames.
+	 *    - 0x00 The entire IO
+	 *    - 0x01 32k
+	 *    - 0x02 64k
+	 *    - 0x04 128k
+	 *    - 0x08 256k
+	 */
+	u32 ssp_tlr_threshold:4;
+
+	/**
+	 * This field is reserved and the driver must set it to 0x00
+	 */
+	u32 reserved_40_2:4;
+
+	/* OFFSET 0x44 */
+	u32 write_data_length; /* read only set to 0 */
+
+	/* OFFSET 0x48-0x58 */
+	struct transport_snapshot snapshot; /* read only set to 0 */
+
+	/* OFFSET 0x5C */
+	u32 block_protection_enable:1;
+	u32 block_size:2;
+	u32 block_protection_function:2;
+	u32 reserved_5C_0:9;
+	u32 active_sgl_element:2;  /* read only set to 0 */
+	u32 sgl_exhausted:1;  /* read only set to 0 */
+	u32 payload_data_transfer_error:4;  /* read only set to 0 */
+	u32 frame_buffer_offset:11; /* read only set to 0 */
+
+	/* OFFSET 0x60-0x7C */
+	/**
+	 * This field is the first SGL element pair found in the TC data structure.
+	 */
+	struct scu_sgl_element_pair sgl_pair_ab;
+	/* OFFSET 0x80-0x9C */
+	/**
+	 * This field is the second SGL element pair found in the TC data structure.
+	 */
+	struct scu_sgl_element_pair sgl_pair_cd;
+
+	/* OFFSET 0xA0-BC */
+	struct scu_sgl_element_pair sgl_snapshot_ac;
+
+	/* OFFSET 0xC0 */
+	u32 active_sgl_element_pair; /* read only set to 0 */
+
+	/* OFFSET 0xC4-0xCC */
+	u32 reserved_C4_CC[3];
+
+	/* OFFSET 0xD0 */
+	u32 intermediate_crc_value:16;
+	u32 initial_crc_seed:16;
+
+	/* OFFSET 0xD4 */
+	u32 application_tag_for_verify:16;
+	u32 application_tag_for_generate:16;
+
+	/* OFFSET 0xD8 */
+	u32 reference_tag_seed_for_verify_function;
+
+	/* OFFSET 0xDC */
+	u32 reserved_DC;
+
+	/* OFFSET 0xE0 */
+	u32 reserved_E0_0:16;
+	u32 application_tag_mask_for_generate:16;
+
+	/* OFFSET 0xE4 */
+	u32 block_protection_control:16;
+	u32 application_tag_mask_for_verify:16;
+
+	/* OFFSET 0xE8 */
+	u32 block_protection_error:8;
+	u32 reserved_E8_0:24;
+
+	/* OFFSET 0xEC */
+	u32 reference_tag_seed_for_verify;
+
+	/* OFFSET 0xF0 */
+	u32 intermediate_crc_valid_snapshot:16;
+	u32 reserved_F0_0:16;
+
+	/* OFFSET 0xF4 */
+	u32 reference_tag_seed_for_verify_function_snapshot;
+
+	/* OFFSET 0xF8 */
+	u32 snapshot_of_reserved_dword_DC_of_tc;
+
+	/* OFFSET 0xFC */
+	u32 reference_tag_seed_for_generate_function_snapshot;
+
+};
+
+#endif /* _SCU_TASK_CONTEXT_H_ */
diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c
new file mode 100644
index 0000000..d6bcdd0
--- /dev/null
+++ b/drivers/scsi/isci/task.c
@@ -0,0 +1,1676 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/completion.h>
+#include <linux/irqflags.h>
+#include "sas.h"
+#include <scsi/libsas.h>
+#include "remote_device.h"
+#include "remote_node_context.h"
+#include "isci.h"
+#include "request.h"
+#include "task.h"
+#include "host.h"
+
+/**
+* isci_task_refuse() - complete the request to the upper layer driver in
+*     the case where an I/O needs to be completed back in the submit path.
+* @ihost: host on which the the request was queued
+* @task: request to complete
+* @response: response code for the completed task.
+* @status: status code for the completed task.
+*
+*/
+static void isci_task_refuse(struct isci_host *ihost, struct sas_task *task,
+			     enum service_response response,
+			     enum exec_status status)
+
+{
+	enum isci_completion_selection disposition;
+
+	disposition = isci_perform_normal_io_completion;
+	disposition = isci_task_set_completion_status(task, response, status,
+						      disposition);
+
+	/* Tasks aborted specifically by a call to the lldd_abort_task
+	 * function should not be completed to the host in the regular path.
+	 */
+	switch (disposition) {
+	case isci_perform_normal_io_completion:
+		/* Normal notification (task_done) */
+		dev_dbg(&ihost->pdev->dev,
+			"%s: Normal - task = %p, response=%d, "
+			"status=%d\n",
+			__func__, task, response, status);
+
+		task->lldd_task = NULL;
+
+		isci_execpath_callback(ihost, task, task->task_done);
+		break;
+
+	case isci_perform_aborted_io_completion:
+		/*
+		 * No notification because this request is already in the
+		 * abort path.
+		 */
+		dev_dbg(&ihost->pdev->dev,
+			"%s: Aborted - task = %p, response=%d, "
+			"status=%d\n",
+			__func__, task, response, status);
+		break;
+
+	case isci_perform_error_io_completion:
+		/* Use sas_task_abort */
+		dev_dbg(&ihost->pdev->dev,
+			"%s: Error - task = %p, response=%d, "
+			"status=%d\n",
+			__func__, task, response, status);
+
+		isci_execpath_callback(ihost, task, sas_task_abort);
+		break;
+
+	default:
+		dev_dbg(&ihost->pdev->dev,
+			"%s: isci task notification default case!",
+			__func__);
+		sas_task_abort(task);
+		break;
+	}
+}
+
+#define for_each_sas_task(num, task) \
+	for (; num > 0; num--,\
+	     task = list_entry(task->list.next, struct sas_task, list))
+
+
+static inline int isci_device_io_ready(struct isci_remote_device *idev,
+				       struct sas_task *task)
+{
+	return idev ? test_bit(IDEV_IO_READY, &idev->flags) ||
+		      (test_bit(IDEV_IO_NCQERROR, &idev->flags) &&
+		       isci_task_is_ncq_recovery(task))
+		    : 0;
+}
+/**
+ * isci_task_execute_task() - This function is one of the SAS Domain Template
+ *    functions. This function is called by libsas to send a task down to
+ *    hardware.
+ * @task: This parameter specifies the SAS task to send.
+ * @num: This parameter specifies the number of tasks to queue.
+ * @gfp_flags: This parameter specifies the context of this call.
+ *
+ * status, zero indicates success.
+ */
+int isci_task_execute_task(struct sas_task *task, int num, gfp_t gfp_flags)
+{
+	struct isci_host *ihost = dev_to_ihost(task->dev);
+	struct isci_remote_device *idev;
+	unsigned long flags;
+	bool io_ready;
+	u16 tag;
+
+	dev_dbg(&ihost->pdev->dev, "%s: num=%d\n", __func__, num);
+
+	for_each_sas_task(num, task) {
+		enum sci_status status = SCI_FAILURE;
+
+		spin_lock_irqsave(&ihost->scic_lock, flags);
+		idev = isci_lookup_device(task->dev);
+		io_ready = isci_device_io_ready(idev, task);
+		tag = isci_alloc_tag(ihost);
+		spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+		dev_dbg(&ihost->pdev->dev,
+			"task: %p, num: %d dev: %p idev: %p:%#lx cmd = %p\n",
+			task, num, task->dev, idev, idev ? idev->flags : 0,
+			task->uldd_task);
+
+		if (!idev) {
+			isci_task_refuse(ihost, task, SAS_TASK_UNDELIVERED,
+					 SAS_DEVICE_UNKNOWN);
+		} else if (!io_ready || tag == SCI_CONTROLLER_INVALID_IO_TAG) {
+			/* Indicate QUEUE_FULL so that the scsi midlayer
+			 * retries.
+			  */
+			isci_task_refuse(ihost, task, SAS_TASK_COMPLETE,
+					 SAS_QUEUE_FULL);
+		} else {
+			/* There is a device and it's ready for I/O. */
+			spin_lock_irqsave(&task->task_state_lock, flags);
+
+			if (task->task_state_flags & SAS_TASK_STATE_ABORTED) {
+				/* The I/O was aborted. */
+				spin_unlock_irqrestore(&task->task_state_lock,
+						       flags);
+
+				isci_task_refuse(ihost, task,
+						 SAS_TASK_UNDELIVERED,
+						 SAM_STAT_TASK_ABORTED);
+			} else {
+				task->task_state_flags |= SAS_TASK_AT_INITIATOR;
+				spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+				/* build and send the request. */
+				status = isci_request_execute(ihost, idev, task, tag);
+
+				if (status != SCI_SUCCESS) {
+
+					spin_lock_irqsave(&task->task_state_lock, flags);
+					/* Did not really start this command. */
+					task->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
+					spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+					/* Indicate QUEUE_FULL so that the scsi
+					* midlayer retries. if the request
+					* failed for remote device reasons,
+					* it gets returned as
+					* SAS_TASK_UNDELIVERED next time
+					* through.
+					*/
+					isci_task_refuse(ihost, task,
+							 SAS_TASK_COMPLETE,
+							 SAS_QUEUE_FULL);
+				}
+			}
+		}
+		if (status != SCI_SUCCESS && tag != SCI_CONTROLLER_INVALID_IO_TAG) {
+			spin_lock_irqsave(&ihost->scic_lock, flags);
+			/* command never hit the device, so just free
+			 * the tci and skip the sequence increment
+			 */
+			isci_tci_free(ihost, ISCI_TAG_TCI(tag));
+			spin_unlock_irqrestore(&ihost->scic_lock, flags);
+		}
+		isci_put_device(idev);
+	}
+	return 0;
+}
+
+static enum sci_status isci_sata_management_task_request_build(struct isci_request *ireq)
+{
+	struct isci_tmf *isci_tmf;
+	enum sci_status status;
+
+	if (tmf_task != ireq->ttype)
+		return SCI_FAILURE;
+
+	isci_tmf = isci_request_access_tmf(ireq);
+
+	switch (isci_tmf->tmf_code) {
+
+	case isci_tmf_sata_srst_high:
+	case isci_tmf_sata_srst_low: {
+		struct host_to_dev_fis *fis = &ireq->stp.cmd;
+
+		memset(fis, 0, sizeof(*fis));
+
+		fis->fis_type  =  0x27;
+		fis->flags     &= ~0x80;
+		fis->flags     &= 0xF0;
+		if (isci_tmf->tmf_code == isci_tmf_sata_srst_high)
+			fis->control |= ATA_SRST;
+		else
+			fis->control &= ~ATA_SRST;
+		break;
+	}
+	/* other management commnd go here... */
+	default:
+		return SCI_FAILURE;
+	}
+
+	/* core builds the protocol specific request
+	 *  based on the h2d fis.
+	 */
+	status = sci_task_request_construct_sata(ireq);
+
+	return status;
+}
+
+static struct isci_request *isci_task_request_build(struct isci_host *ihost,
+						    struct isci_remote_device *idev,
+						    u16 tag, struct isci_tmf *isci_tmf)
+{
+	enum sci_status status = SCI_FAILURE;
+	struct isci_request *ireq = NULL;
+	struct domain_device *dev;
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: isci_tmf = %p\n", __func__, isci_tmf);
+
+	dev = idev->domain_dev;
+
+	/* do common allocation and init of request object. */
+	ireq = isci_tmf_request_from_tag(ihost, isci_tmf, tag);
+	if (!ireq)
+		return NULL;
+
+	/* let the core do it's construct. */
+	status = sci_task_request_construct(ihost, idev, tag,
+					     ireq);
+
+	if (status != SCI_SUCCESS) {
+		dev_warn(&ihost->pdev->dev,
+			 "%s: sci_task_request_construct failed - "
+			 "status = 0x%x\n",
+			 __func__,
+			 status);
+		return NULL;
+	}
+
+	/* XXX convert to get this from task->tproto like other drivers */
+	if (dev->dev_type == SAS_END_DEV) {
+		isci_tmf->proto = SAS_PROTOCOL_SSP;
+		status = sci_task_request_construct_ssp(ireq);
+		if (status != SCI_SUCCESS)
+			return NULL;
+	}
+
+	if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) {
+		isci_tmf->proto = SAS_PROTOCOL_SATA;
+		status = isci_sata_management_task_request_build(ireq);
+
+		if (status != SCI_SUCCESS)
+			return NULL;
+	}
+	return ireq;
+}
+
+static int isci_task_execute_tmf(struct isci_host *ihost,
+				 struct isci_remote_device *idev,
+				 struct isci_tmf *tmf, unsigned long timeout_ms)
+{
+	DECLARE_COMPLETION_ONSTACK(completion);
+	enum sci_task_status status = SCI_TASK_FAILURE;
+	struct isci_request *ireq;
+	int ret = TMF_RESP_FUNC_FAILED;
+	unsigned long flags;
+	unsigned long timeleft;
+	u16 tag;
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+	tag = isci_alloc_tag(ihost);
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+	if (tag == SCI_CONTROLLER_INVALID_IO_TAG)
+		return ret;
+
+	/* sanity check, return TMF_RESP_FUNC_FAILED
+	 * if the device is not there and ready.
+	 */
+	if (!idev ||
+	    (!test_bit(IDEV_IO_READY, &idev->flags) &&
+	     !test_bit(IDEV_IO_NCQERROR, &idev->flags))) {
+		dev_dbg(&ihost->pdev->dev,
+			"%s: idev = %p not ready (%#lx)\n",
+			__func__,
+			idev, idev ? idev->flags : 0);
+		goto err_tci;
+	} else
+		dev_dbg(&ihost->pdev->dev,
+			"%s: idev = %p\n",
+			__func__, idev);
+
+	/* Assign the pointer to the TMF's completion kernel wait structure. */
+	tmf->complete = &completion;
+
+	ireq = isci_task_request_build(ihost, idev, tag, tmf);
+	if (!ireq)
+		goto err_tci;
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	/* start the TMF io. */
+	status = sci_controller_start_task(ihost, idev, ireq);
+
+	if (status != SCI_TASK_SUCCESS) {
+		dev_dbg(&ihost->pdev->dev,
+			 "%s: start_io failed - status = 0x%x, request = %p\n",
+			 __func__,
+			 status,
+			 ireq);
+		spin_unlock_irqrestore(&ihost->scic_lock, flags);
+		goto err_tci;
+	}
+
+	if (tmf->cb_state_func != NULL)
+		tmf->cb_state_func(isci_tmf_started, tmf, tmf->cb_data);
+
+	isci_request_change_state(ireq, started);
+
+	/* add the request to the remote device request list. */
+	list_add(&ireq->dev_node, &idev->reqs_in_process);
+
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+	/* Wait for the TMF to complete, or a timeout. */
+	timeleft = wait_for_completion_timeout(&completion,
+					       msecs_to_jiffies(timeout_ms));
+
+	if (timeleft == 0) {
+		spin_lock_irqsave(&ihost->scic_lock, flags);
+
+		if (tmf->cb_state_func != NULL)
+			tmf->cb_state_func(isci_tmf_timed_out, tmf, tmf->cb_data);
+
+		sci_controller_terminate_request(ihost,
+						  idev,
+						  ireq);
+
+		spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+		wait_for_completion(tmf->complete);
+	}
+
+	isci_print_tmf(tmf);
+
+	if (tmf->status == SCI_SUCCESS)
+		ret =  TMF_RESP_FUNC_COMPLETE;
+	else if (tmf->status == SCI_FAILURE_IO_RESPONSE_VALID) {
+		dev_dbg(&ihost->pdev->dev,
+			"%s: tmf.status == "
+			"SCI_FAILURE_IO_RESPONSE_VALID\n",
+			__func__);
+		ret =  TMF_RESP_FUNC_COMPLETE;
+	}
+	/* Else - leave the default "failed" status alone. */
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: completed request = %p\n",
+		__func__,
+		ireq);
+
+	return ret;
+
+ err_tci:
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+	isci_tci_free(ihost, ISCI_TAG_TCI(tag));
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+	return ret;
+}
+
+static void isci_task_build_tmf(struct isci_tmf *tmf,
+				enum isci_tmf_function_codes code,
+				void (*tmf_sent_cb)(enum isci_tmf_cb_state,
+						    struct isci_tmf *,
+						    void *),
+				void *cb_data)
+{
+	memset(tmf, 0, sizeof(*tmf));
+
+	tmf->tmf_code      = code;
+	tmf->cb_state_func = tmf_sent_cb;
+	tmf->cb_data       = cb_data;
+}
+
+static void isci_task_build_abort_task_tmf(struct isci_tmf *tmf,
+					   enum isci_tmf_function_codes code,
+					   void (*tmf_sent_cb)(enum isci_tmf_cb_state,
+							       struct isci_tmf *,
+							       void *),
+					   struct isci_request *old_request)
+{
+	isci_task_build_tmf(tmf, code, tmf_sent_cb, old_request);
+	tmf->io_tag = old_request->io_tag;
+}
+
+/**
+ * isci_task_validate_request_to_abort() - This function checks the given I/O
+ *    against the "started" state.  If the request is still "started", it's
+ *    state is changed to aborted. NOTE: isci_host->scic_lock MUST BE HELD
+ *    BEFORE CALLING THIS FUNCTION.
+ * @isci_request: This parameter specifies the request object to control.
+ * @isci_host: This parameter specifies the ISCI host object
+ * @isci_device: This is the device to which the request is pending.
+ * @aborted_io_completion: This is a completion structure that will be added to
+ *    the request in case it is changed to aborting; this completion is
+ *    triggered when the request is fully completed.
+ *
+ * Either "started" on successful change of the task status to "aborted", or
+ * "unallocated" if the task cannot be controlled.
+ */
+static enum isci_request_status isci_task_validate_request_to_abort(
+	struct isci_request *isci_request,
+	struct isci_host *isci_host,
+	struct isci_remote_device *isci_device,
+	struct completion *aborted_io_completion)
+{
+	enum isci_request_status old_state = unallocated;
+
+	/* Only abort the task if it's in the
+	 *  device's request_in_process list
+	 */
+	if (isci_request && !list_empty(&isci_request->dev_node)) {
+		old_state = isci_request_change_started_to_aborted(
+			isci_request, aborted_io_completion);
+
+	}
+
+	return old_state;
+}
+
+/**
+* isci_request_cleanup_completed_loiterer() - This function will take care of
+*    the final cleanup on any request which has been explicitly terminated.
+* @isci_host: This parameter specifies the ISCI host object
+* @isci_device: This is the device to which the request is pending.
+* @isci_request: This parameter specifies the terminated request object.
+* @task: This parameter is the libsas I/O request.
+*/
+static void isci_request_cleanup_completed_loiterer(
+	struct isci_host          *isci_host,
+	struct isci_remote_device *isci_device,
+	struct isci_request       *isci_request,
+	struct sas_task           *task)
+{
+	unsigned long flags;
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_device=%p, request=%p, task=%p\n",
+		__func__, isci_device, isci_request, task);
+
+	if (task != NULL) {
+
+		spin_lock_irqsave(&task->task_state_lock, flags);
+		task->lldd_task = NULL;
+
+		task->task_state_flags &= ~SAS_TASK_NEED_DEV_RESET;
+
+		isci_set_task_doneflags(task);
+
+		/* If this task is not in the abort path, call task_done. */
+		if (!(task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
+
+			spin_unlock_irqrestore(&task->task_state_lock, flags);
+			task->task_done(task);
+		} else
+			spin_unlock_irqrestore(&task->task_state_lock, flags);
+	}
+
+	if (isci_request != NULL) {
+		spin_lock_irqsave(&isci_host->scic_lock, flags);
+		list_del_init(&isci_request->dev_node);
+		spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+	}
+}
+
+/**
+ * isci_terminate_request_core() - This function will terminate the given
+ *    request, and wait for it to complete.  This function must only be called
+ *    from a thread that can wait.  Note that the request is terminated and
+ *    completed (back to the host, if started there).
+ * @ihost: This SCU.
+ * @idev: The target.
+ * @isci_request: The I/O request to be terminated.
+ *
+ */
+static void isci_terminate_request_core(struct isci_host *ihost,
+					struct isci_remote_device *idev,
+					struct isci_request *isci_request)
+{
+	enum sci_status status      = SCI_SUCCESS;
+	bool was_terminated         = false;
+	bool needs_cleanup_handling = false;
+	enum isci_request_status request_status;
+	unsigned long     flags;
+	unsigned long     termination_completed = 1;
+	struct completion *io_request_completion;
+	struct sas_task   *task;
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: device = %p; request = %p\n",
+		__func__, idev, isci_request);
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	io_request_completion = isci_request->io_request_completion;
+
+	task = (isci_request->ttype == io_task)
+		? isci_request_access_task(isci_request)
+		: NULL;
+
+	/* Note that we are not going to control
+	 * the target to abort the request.
+	 */
+	set_bit(IREQ_COMPLETE_IN_TARGET, &isci_request->flags);
+
+	/* Make sure the request wasn't just sitting around signalling
+	 * device condition (if the request handle is NULL, then the
+	 * request completed but needed additional handling here).
+	 */
+	if (!test_bit(IREQ_TERMINATED, &isci_request->flags)) {
+		was_terminated = true;
+		needs_cleanup_handling = true;
+		status = sci_controller_terminate_request(ihost,
+							   idev,
+							   isci_request);
+	}
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+	/*
+	 * The only time the request to terminate will
+	 * fail is when the io request is completed and
+	 * being aborted.
+	 */
+	if (status != SCI_SUCCESS) {
+		dev_dbg(&ihost->pdev->dev,
+			"%s: sci_controller_terminate_request"
+			" returned = 0x%x\n",
+			__func__, status);
+
+		isci_request->io_request_completion = NULL;
+
+	} else {
+		if (was_terminated) {
+			dev_dbg(&ihost->pdev->dev,
+				"%s: before completion wait (%p/%p)\n",
+				__func__, isci_request, io_request_completion);
+
+			/* Wait here for the request to complete. */
+			#define TERMINATION_TIMEOUT_MSEC 500
+			termination_completed
+				= wait_for_completion_timeout(
+				   io_request_completion,
+				   msecs_to_jiffies(TERMINATION_TIMEOUT_MSEC));
+
+			if (!termination_completed) {
+
+				/* The request to terminate has timed out.  */
+				spin_lock_irqsave(&ihost->scic_lock,
+						  flags);
+
+				/* Check for state changes. */
+				if (!test_bit(IREQ_TERMINATED, &isci_request->flags)) {
+
+					/* The best we can do is to have the
+					 * request die a silent death if it
+					 * ever really completes.
+					 *
+					 * Set the request state to "dead",
+					 * and clear the task pointer so that
+					 * an actual completion event callback
+					 * doesn't do anything.
+					 */
+					isci_request->status = dead;
+					isci_request->io_request_completion
+						= NULL;
+
+					if (isci_request->ttype == io_task) {
+
+						/* Break links with the
+						* sas_task.
+						*/
+						isci_request->ttype_ptr.io_task_ptr
+							= NULL;
+					}
+				} else
+					termination_completed = 1;
+
+				spin_unlock_irqrestore(&ihost->scic_lock,
+						       flags);
+
+				if (!termination_completed) {
+
+					dev_dbg(&ihost->pdev->dev,
+						"%s: *** Timeout waiting for "
+						"termination(%p/%p)\n",
+						__func__, io_request_completion,
+						isci_request);
+
+					/* The request can no longer be referenced
+					 * safely since it may go away if the
+					 * termination every really does complete.
+					 */
+					isci_request = NULL;
+				}
+			}
+			if (termination_completed)
+				dev_dbg(&ihost->pdev->dev,
+					"%s: after completion wait (%p/%p)\n",
+					__func__, isci_request, io_request_completion);
+		}
+
+		if (termination_completed) {
+
+			isci_request->io_request_completion = NULL;
+
+			/* Peek at the status of the request.  This will tell
+			 * us if there was special handling on the request such that it
+			 * needs to be detached and freed here.
+			 */
+			spin_lock_irqsave(&isci_request->state_lock, flags);
+			request_status = isci_request->status;
+
+			if ((isci_request->ttype == io_task) /* TMFs are in their own thread */
+			    && ((request_status == aborted)
+				|| (request_status == aborting)
+				|| (request_status == terminating)
+				|| (request_status == completed)
+				|| (request_status == dead)
+				)
+			    ) {
+
+				/* The completion routine won't free a request in
+				 * the aborted/aborting/etc. states, so we do
+				 * it here.
+				 */
+				needs_cleanup_handling = true;
+			}
+			spin_unlock_irqrestore(&isci_request->state_lock, flags);
+
+		}
+		if (needs_cleanup_handling)
+			isci_request_cleanup_completed_loiterer(
+				ihost, idev, isci_request, task);
+	}
+}
+
+/**
+ * isci_terminate_pending_requests() - This function will change the all of the
+ *    requests on the given device's state to "aborting", will terminate the
+ *    requests, and wait for them to complete.  This function must only be
+ *    called from a thread that can wait.  Note that the requests are all
+ *    terminated and completed (back to the host, if started there).
+ * @isci_host: This parameter specifies SCU.
+ * @idev: This parameter specifies the target.
+ *
+ */
+void isci_terminate_pending_requests(struct isci_host *ihost,
+				     struct isci_remote_device *idev)
+{
+	struct completion request_completion;
+	enum isci_request_status old_state;
+	unsigned long flags;
+	LIST_HEAD(list);
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+	list_splice_init(&idev->reqs_in_process, &list);
+
+	/* assumes that isci_terminate_request_core deletes from the list */
+	while (!list_empty(&list)) {
+		struct isci_request *ireq = list_entry(list.next, typeof(*ireq), dev_node);
+
+		/* Change state to "terminating" if it is currently
+		 * "started".
+		 */
+		old_state = isci_request_change_started_to_newstate(ireq,
+								    &request_completion,
+								    terminating);
+		switch (old_state) {
+		case started:
+		case completed:
+		case aborting:
+			break;
+		default:
+			/* termination in progress, or otherwise dispositioned.
+			 * We know the request was on 'list' so should be safe
+			 * to move it back to reqs_in_process
+			 */
+			list_move(&ireq->dev_node, &idev->reqs_in_process);
+			ireq = NULL;
+			break;
+		}
+
+		if (!ireq)
+			continue;
+		spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+		init_completion(&request_completion);
+
+		dev_dbg(&ihost->pdev->dev,
+			 "%s: idev=%p request=%p; task=%p old_state=%d\n",
+			 __func__, idev, ireq,
+			ireq->ttype == io_task ? isci_request_access_task(ireq) : NULL,
+			old_state);
+
+		/* If the old_state is started:
+		 * This request was not already being aborted. If it had been,
+		 * then the aborting I/O (ie. the TMF request) would not be in
+		 * the aborting state, and thus would be terminated here.  Note
+		 * that since the TMF completion's call to the kernel function
+		 * "complete()" does not happen until the pending I/O request
+		 * terminate fully completes, we do not have to implement a
+		 * special wait here for already aborting requests - the
+		 * termination of the TMF request will force the request
+		 * to finish it's already started terminate.
+		 *
+		 * If old_state == completed:
+		 * This request completed from the SCU hardware perspective
+		 * and now just needs cleaning up in terms of freeing the
+		 * request and potentially calling up to libsas.
+		 *
+		 * If old_state == aborting:
+		 * This request has already gone through a TMF timeout, but may
+		 * not have been terminated; needs cleaning up at least.
+		 */
+		isci_terminate_request_core(ihost, idev, ireq);
+		spin_lock_irqsave(&ihost->scic_lock, flags);
+	}
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
+
+/**
+ * isci_task_send_lu_reset_sas() - This function is called by of the SAS Domain
+ *    Template functions.
+ * @lun: This parameter specifies the lun to be reset.
+ *
+ * status, zero indicates success.
+ */
+static int isci_task_send_lu_reset_sas(
+	struct isci_host *isci_host,
+	struct isci_remote_device *isci_device,
+	u8 *lun)
+{
+	struct isci_tmf tmf;
+	int ret = TMF_RESP_FUNC_FAILED;
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_host = %p, isci_device = %p\n",
+		__func__, isci_host, isci_device);
+	/* Send the LUN reset to the target.  By the time the call returns,
+	 * the TMF has fully exected in the target (in which case the return
+	 * value is "TMF_RESP_FUNC_COMPLETE", or the request timed-out (or
+	 * was otherwise unable to be executed ("TMF_RESP_FUNC_FAILED").
+	 */
+	isci_task_build_tmf(&tmf, isci_tmf_ssp_lun_reset, NULL, NULL);
+
+	#define ISCI_LU_RESET_TIMEOUT_MS 2000 /* 2 second timeout. */
+	ret = isci_task_execute_tmf(isci_host, isci_device, &tmf, ISCI_LU_RESET_TIMEOUT_MS);
+
+	if (ret == TMF_RESP_FUNC_COMPLETE)
+		dev_dbg(&isci_host->pdev->dev,
+			"%s: %p: TMF_LU_RESET passed\n",
+			__func__, isci_device);
+	else
+		dev_dbg(&isci_host->pdev->dev,
+			"%s: %p: TMF_LU_RESET failed (%x)\n",
+			__func__, isci_device, ret);
+
+	return ret;
+}
+
+static int isci_task_send_lu_reset_sata(struct isci_host *ihost,
+				 struct isci_remote_device *idev, u8 *lun)
+{
+	int ret = TMF_RESP_FUNC_FAILED;
+	struct isci_tmf tmf;
+
+	/* Send the soft reset to the target */
+	#define ISCI_SRST_TIMEOUT_MS 25000 /* 25 second timeout. */
+	isci_task_build_tmf(&tmf, isci_tmf_sata_srst_high, NULL, NULL);
+
+	ret = isci_task_execute_tmf(ihost, idev, &tmf, ISCI_SRST_TIMEOUT_MS);
+
+	if (ret != TMF_RESP_FUNC_COMPLETE) {
+		dev_dbg(&ihost->pdev->dev,
+			 "%s: Assert SRST failed (%p) = %x",
+			 __func__, idev, ret);
+
+		/* Return the failure so that the LUN reset is escalated
+		 * to a target reset.
+		 */
+	}
+	return ret;
+}
+
+/**
+ * isci_task_lu_reset() - This function is one of the SAS Domain Template
+ *    functions. This is one of the Task Management functoins called by libsas,
+ *    to reset the given lun. Note the assumption that while this call is
+ *    executing, no I/O will be sent by the host to the device.
+ * @lun: This parameter specifies the lun to be reset.
+ *
+ * status, zero indicates success.
+ */
+int isci_task_lu_reset(struct domain_device *domain_device, u8 *lun)
+{
+	struct isci_host *isci_host = dev_to_ihost(domain_device);
+	struct isci_remote_device *isci_device;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&isci_host->scic_lock, flags);
+	isci_device = isci_lookup_device(domain_device);
+	spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: domain_device=%p, isci_host=%p; isci_device=%p\n",
+		 __func__, domain_device, isci_host, isci_device);
+
+	if (isci_device)
+		set_bit(IDEV_EH, &isci_device->flags);
+
+	/* If there is a device reset pending on any request in the
+	 * device's list, fail this LUN reset request in order to
+	 * escalate to the device reset.
+	 */
+	if (!isci_device ||
+	    isci_device_is_reset_pending(isci_host, isci_device)) {
+		dev_dbg(&isci_host->pdev->dev,
+			 "%s: No dev (%p), or "
+			 "RESET PENDING: domain_device=%p\n",
+			 __func__, isci_device, domain_device);
+		ret = TMF_RESP_FUNC_FAILED;
+		goto out;
+	}
+
+	/* Send the task management part of the reset. */
+	if (sas_protocol_ata(domain_device->tproto)) {
+		ret = isci_task_send_lu_reset_sata(isci_host, isci_device, lun);
+	} else
+		ret = isci_task_send_lu_reset_sas(isci_host, isci_device, lun);
+
+	/* If the LUN reset worked, all the I/O can now be terminated. */
+	if (ret == TMF_RESP_FUNC_COMPLETE)
+		/* Terminate all I/O now. */
+		isci_terminate_pending_requests(isci_host,
+						isci_device);
+
+ out:
+	isci_put_device(isci_device);
+	return ret;
+}
+
+
+/*	 int (*lldd_clear_nexus_port)(struct asd_sas_port *); */
+int isci_task_clear_nexus_port(struct asd_sas_port *port)
+{
+	return TMF_RESP_FUNC_FAILED;
+}
+
+
+
+int isci_task_clear_nexus_ha(struct sas_ha_struct *ha)
+{
+	return TMF_RESP_FUNC_FAILED;
+}
+
+/* Task Management Functions. Must be called from process context.	 */
+
+/**
+ * isci_abort_task_process_cb() - This is a helper function for the abort task
+ *    TMF command.  It manages the request state with respect to the successful
+ *    transmission / completion of the abort task request.
+ * @cb_state: This parameter specifies when this function was called - after
+ *    the TMF request has been started and after it has timed-out.
+ * @tmf: This parameter specifies the TMF in progress.
+ *
+ *
+ */
+static void isci_abort_task_process_cb(
+	enum isci_tmf_cb_state cb_state,
+	struct isci_tmf *tmf,
+	void *cb_data)
+{
+	struct isci_request *old_request;
+
+	old_request = (struct isci_request *)cb_data;
+
+	dev_dbg(&old_request->isci_host->pdev->dev,
+		"%s: tmf=%p, old_request=%p\n",
+		__func__, tmf, old_request);
+
+	switch (cb_state) {
+
+	case isci_tmf_started:
+		/* The TMF has been started.  Nothing to do here, since the
+		 * request state was already set to "aborted" by the abort
+		 * task function.
+		 */
+		if ((old_request->status != aborted)
+			&& (old_request->status != completed))
+			dev_dbg(&old_request->isci_host->pdev->dev,
+				"%s: Bad request status (%d): tmf=%p, old_request=%p\n",
+				__func__, old_request->status, tmf, old_request);
+		break;
+
+	case isci_tmf_timed_out:
+
+		/* Set the task's state to "aborting", since the abort task
+		 * function thread set it to "aborted" (above) in anticipation
+		 * of the task management request working correctly.  Since the
+		 * timeout has now fired, the TMF request failed.  We set the
+		 * state such that the request completion will indicate the
+		 * device is no longer present.
+		 */
+		isci_request_change_state(old_request, aborting);
+		break;
+
+	default:
+		dev_dbg(&old_request->isci_host->pdev->dev,
+			"%s: Bad cb_state (%d): tmf=%p, old_request=%p\n",
+			__func__, cb_state, tmf, old_request);
+		break;
+	}
+}
+
+/**
+ * isci_task_abort_task() - This function is one of the SAS Domain Template
+ *    functions. This function is called by libsas to abort a specified task.
+ * @task: This parameter specifies the SAS task to abort.
+ *
+ * status, zero indicates success.
+ */
+int isci_task_abort_task(struct sas_task *task)
+{
+	struct isci_host *isci_host = dev_to_ihost(task->dev);
+	DECLARE_COMPLETION_ONSTACK(aborted_io_completion);
+	struct isci_request       *old_request = NULL;
+	enum isci_request_status  old_state;
+	struct isci_remote_device *isci_device = NULL;
+	struct isci_tmf           tmf;
+	int                       ret = TMF_RESP_FUNC_FAILED;
+	unsigned long             flags;
+	bool                      any_dev_reset = false;
+
+	/* Get the isci_request reference from the task.  Note that
+	 * this check does not depend on the pending request list
+	 * in the device, because tasks driving resets may land here
+	 * after completion in the core.
+	 */
+	spin_lock_irqsave(&isci_host->scic_lock, flags);
+	spin_lock(&task->task_state_lock);
+
+	old_request = task->lldd_task;
+
+	/* If task is already done, the request isn't valid */
+	if (!(task->task_state_flags & SAS_TASK_STATE_DONE) &&
+	    (task->task_state_flags & SAS_TASK_AT_INITIATOR) &&
+	    old_request)
+		isci_device = isci_lookup_device(task->dev);
+
+	spin_unlock(&task->task_state_lock);
+	spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: task = %p\n", __func__, task);
+
+	if (!isci_device || !old_request)
+		goto out;
+
+	set_bit(IDEV_EH, &isci_device->flags);
+
+	/* This version of the driver will fail abort requests for
+	 * SATA/STP.  Failing the abort request this way will cause the
+	 * SCSI error handler thread to escalate to LUN reset
+	 */
+	if (sas_protocol_ata(task->task_proto)) {
+		dev_dbg(&isci_host->pdev->dev,
+			    " task %p is for a STP/SATA device;"
+			    " returning TMF_RESP_FUNC_FAILED\n"
+			    " to cause a LUN reset...\n", task);
+		goto out;
+	}
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: old_request == %p\n", __func__, old_request);
+
+	any_dev_reset = isci_device_is_reset_pending(isci_host, isci_device);
+
+	spin_lock_irqsave(&task->task_state_lock, flags);
+
+	any_dev_reset = any_dev_reset || (task->task_state_flags & SAS_TASK_NEED_DEV_RESET);
+
+	/* If the extraction of the request reference from the task
+	 * failed, then the request has been completed (or if there is a
+	 * pending reset then this abort request function must be failed
+	 * in order to escalate to the target reset).
+	 */
+	if ((old_request == NULL) || any_dev_reset) {
+
+		/* If the device reset task flag is set, fail the task
+		 * management request.  Otherwise, the original request
+		 * has completed.
+		 */
+		if (any_dev_reset) {
+
+			/* Turn off the task's DONE to make sure this
+			 * task is escalated to a target reset.
+			 */
+			task->task_state_flags &= ~SAS_TASK_STATE_DONE;
+
+			/* Make the reset happen as soon as possible. */
+			task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
+
+			spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+			/* Fail the task management request in order to
+			 * escalate to the target reset.
+			 */
+			ret = TMF_RESP_FUNC_FAILED;
+
+			dev_dbg(&isci_host->pdev->dev,
+				"%s: Failing task abort in order to "
+				"escalate to target reset because\n"
+				"SAS_TASK_NEED_DEV_RESET is set for "
+				"task %p on dev %p\n",
+				__func__, task, isci_device);
+
+
+		} else {
+			/* The request has already completed and there
+			 * is nothing to do here other than to set the task
+			 * done bit, and indicate that the task abort function
+			 * was sucessful.
+			 */
+			isci_set_task_doneflags(task);
+
+			spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+			ret = TMF_RESP_FUNC_COMPLETE;
+
+			dev_dbg(&isci_host->pdev->dev,
+				"%s: abort task not needed for %p\n",
+				__func__, task);
+		}
+		goto out;
+	} else {
+		spin_unlock_irqrestore(&task->task_state_lock, flags);
+	}
+
+	spin_lock_irqsave(&isci_host->scic_lock, flags);
+
+	/* Check the request status and change to "aborted" if currently
+	 * "starting"; if true then set the I/O kernel completion
+	 * struct that will be triggered when the request completes.
+	 */
+	old_state = isci_task_validate_request_to_abort(
+				old_request, isci_host, isci_device,
+				&aborted_io_completion);
+	if ((old_state != started) &&
+	    (old_state != completed) &&
+	    (old_state != aborting)) {
+
+		spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+
+		/* The request was already being handled by someone else (because
+		* they got to set the state away from started).
+		*/
+		dev_dbg(&isci_host->pdev->dev,
+			"%s:  device = %p; old_request %p already being aborted\n",
+			__func__,
+			isci_device, old_request);
+		ret = TMF_RESP_FUNC_COMPLETE;
+		goto out;
+	}
+	if (task->task_proto == SAS_PROTOCOL_SMP ||
+	    test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags)) {
+
+		spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+
+		dev_dbg(&isci_host->pdev->dev,
+			"%s: SMP request (%d)"
+			" or complete_in_target (%d), thus no TMF\n",
+			__func__, (task->task_proto == SAS_PROTOCOL_SMP),
+			test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags));
+
+		/* Set the state on the task. */
+		isci_task_all_done(task);
+
+		ret = TMF_RESP_FUNC_COMPLETE;
+
+		/* Stopping and SMP devices are not sent a TMF, and are not
+		 * reset, but the outstanding I/O request is terminated below.
+		 */
+	} else {
+		/* Fill in the tmf stucture */
+		isci_task_build_abort_task_tmf(&tmf, isci_tmf_ssp_task_abort,
+					       isci_abort_task_process_cb,
+					       old_request);
+
+		spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+
+		#define ISCI_ABORT_TASK_TIMEOUT_MS 500 /* half second timeout. */
+		ret = isci_task_execute_tmf(isci_host, isci_device, &tmf,
+					    ISCI_ABORT_TASK_TIMEOUT_MS);
+
+		if (ret != TMF_RESP_FUNC_COMPLETE)
+			dev_dbg(&isci_host->pdev->dev,
+				"%s: isci_task_send_tmf failed\n",
+				__func__);
+	}
+	if (ret == TMF_RESP_FUNC_COMPLETE) {
+		set_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags);
+
+		/* Clean up the request on our side, and wait for the aborted
+		 * I/O to complete.
+		 */
+		isci_terminate_request_core(isci_host, isci_device, old_request);
+	}
+
+	/* Make sure we do not leave a reference to aborted_io_completion */
+	old_request->io_request_completion = NULL;
+ out:
+	isci_put_device(isci_device);
+	return ret;
+}
+
+/**
+ * isci_task_abort_task_set() - This function is one of the SAS Domain Template
+ *    functions. This is one of the Task Management functoins called by libsas,
+ *    to abort all task for the given lun.
+ * @d_device: This parameter specifies the domain device associated with this
+ *    request.
+ * @lun: This parameter specifies the lun associated with this request.
+ *
+ * status, zero indicates success.
+ */
+int isci_task_abort_task_set(
+	struct domain_device *d_device,
+	u8 *lun)
+{
+	return TMF_RESP_FUNC_FAILED;
+}
+
+
+/**
+ * isci_task_clear_aca() - This function is one of the SAS Domain Template
+ *    functions. This is one of the Task Management functoins called by libsas.
+ * @d_device: This parameter specifies the domain device associated with this
+ *    request.
+ * @lun: This parameter specifies the lun	 associated with this request.
+ *
+ * status, zero indicates success.
+ */
+int isci_task_clear_aca(
+	struct domain_device *d_device,
+	u8 *lun)
+{
+	return TMF_RESP_FUNC_FAILED;
+}
+
+
+
+/**
+ * isci_task_clear_task_set() - This function is one of the SAS Domain Template
+ *    functions. This is one of the Task Management functoins called by libsas.
+ * @d_device: This parameter specifies the domain device associated with this
+ *    request.
+ * @lun: This parameter specifies the lun	 associated with this request.
+ *
+ * status, zero indicates success.
+ */
+int isci_task_clear_task_set(
+	struct domain_device *d_device,
+	u8 *lun)
+{
+	return TMF_RESP_FUNC_FAILED;
+}
+
+
+/**
+ * isci_task_query_task() - This function is implemented to cause libsas to
+ *    correctly escalate the failed abort to a LUN or target reset (this is
+ *    because sas_scsi_find_task libsas function does not correctly interpret
+ *    all return codes from the abort task call).  When TMF_RESP_FUNC_SUCC is
+ *    returned, libsas turns this into a LUN reset; when FUNC_FAILED is
+ *    returned, libsas will turn this into a target reset
+ * @task: This parameter specifies the sas task being queried.
+ * @lun: This parameter specifies the lun associated with this request.
+ *
+ * status, zero indicates success.
+ */
+int isci_task_query_task(
+	struct sas_task *task)
+{
+	/* See if there is a pending device reset for this device. */
+	if (task->task_state_flags & SAS_TASK_NEED_DEV_RESET)
+		return TMF_RESP_FUNC_FAILED;
+	else
+		return TMF_RESP_FUNC_SUCC;
+}
+
+/*
+ * isci_task_request_complete() - This function is called by the sci core when
+ *    an task request completes.
+ * @ihost: This parameter specifies the ISCI host object
+ * @ireq: This parameter is the completed isci_request object.
+ * @completion_status: This parameter specifies the completion status from the
+ *    sci core.
+ *
+ * none.
+ */
+void
+isci_task_request_complete(struct isci_host *ihost,
+			   struct isci_request *ireq,
+			   enum sci_task_status completion_status)
+{
+	struct isci_tmf *tmf = isci_request_access_tmf(ireq);
+	struct completion *tmf_complete;
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: request = %p, status=%d\n",
+		__func__, ireq, completion_status);
+
+	isci_request_change_state(ireq, completed);
+
+	tmf->status = completion_status;
+	set_bit(IREQ_COMPLETE_IN_TARGET, &ireq->flags);
+
+	if (tmf->proto == SAS_PROTOCOL_SSP) {
+		memcpy(&tmf->resp.resp_iu,
+		       &ireq->ssp.rsp,
+		       SSP_RESP_IU_MAX_SIZE);
+	} else if (tmf->proto == SAS_PROTOCOL_SATA) {
+		memcpy(&tmf->resp.d2h_fis,
+		       &ireq->stp.rsp,
+		       sizeof(struct dev_to_host_fis));
+	}
+
+	/* PRINT_TMF( ((struct isci_tmf *)request->task)); */
+	tmf_complete = tmf->complete;
+
+	sci_controller_complete_io(ihost, ireq->target_device, ireq);
+	/* set the 'terminated' flag handle to make sure it cannot be terminated
+	 *  or completed again.
+	 */
+	set_bit(IREQ_TERMINATED, &ireq->flags);
+
+	isci_request_change_state(ireq, unallocated);
+	list_del_init(&ireq->dev_node);
+
+	/* The task management part completes last. */
+	complete(tmf_complete);
+}
+
+static void isci_smp_task_timedout(unsigned long _task)
+{
+	struct sas_task *task = (void *) _task;
+	unsigned long flags;
+
+	spin_lock_irqsave(&task->task_state_lock, flags);
+	if (!(task->task_state_flags & SAS_TASK_STATE_DONE))
+		task->task_state_flags |= SAS_TASK_STATE_ABORTED;
+	spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+	complete(&task->completion);
+}
+
+static void isci_smp_task_done(struct sas_task *task)
+{
+	if (!del_timer(&task->timer))
+		return;
+	complete(&task->completion);
+}
+
+static struct sas_task *isci_alloc_task(void)
+{
+	struct sas_task *task = kzalloc(sizeof(*task), GFP_KERNEL);
+
+	if (task) {
+		INIT_LIST_HEAD(&task->list);
+		spin_lock_init(&task->task_state_lock);
+		task->task_state_flags = SAS_TASK_STATE_PENDING;
+		init_timer(&task->timer);
+		init_completion(&task->completion);
+	}
+
+	return task;
+}
+
+static void isci_free_task(struct isci_host *ihost, struct sas_task  *task)
+{
+	if (task) {
+		BUG_ON(!list_empty(&task->list));
+		kfree(task);
+	}
+}
+
+static int isci_smp_execute_task(struct isci_host *ihost,
+				 struct domain_device *dev, void *req,
+				 int req_size, void *resp, int resp_size)
+{
+	int res, retry;
+	struct sas_task *task = NULL;
+
+	for (retry = 0; retry < 3; retry++) {
+		task = isci_alloc_task();
+		if (!task)
+			return -ENOMEM;
+
+		task->dev = dev;
+		task->task_proto = dev->tproto;
+		sg_init_one(&task->smp_task.smp_req, req, req_size);
+		sg_init_one(&task->smp_task.smp_resp, resp, resp_size);
+
+		task->task_done = isci_smp_task_done;
+
+		task->timer.data = (unsigned long) task;
+		task->timer.function = isci_smp_task_timedout;
+		task->timer.expires = jiffies + 10*HZ;
+		add_timer(&task->timer);
+
+		res = isci_task_execute_task(task, 1, GFP_KERNEL);
+
+		if (res) {
+			del_timer(&task->timer);
+			dev_dbg(&ihost->pdev->dev,
+				"%s: executing SMP task failed:%d\n",
+				__func__, res);
+			goto ex_err;
+		}
+
+		wait_for_completion(&task->completion);
+		res = -ECOMM;
+		if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
+			dev_dbg(&ihost->pdev->dev,
+				"%s: smp task timed out or aborted\n",
+				__func__);
+			isci_task_abort_task(task);
+			if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
+				dev_dbg(&ihost->pdev->dev,
+					"%s: SMP task aborted and not done\n",
+					__func__);
+				goto ex_err;
+			}
+		}
+		if (task->task_status.resp == SAS_TASK_COMPLETE &&
+		    task->task_status.stat == SAM_STAT_GOOD) {
+			res = 0;
+			break;
+		}
+		if (task->task_status.resp == SAS_TASK_COMPLETE &&
+		      task->task_status.stat == SAS_DATA_UNDERRUN) {
+			/* no error, but return the number of bytes of
+			* underrun */
+			res = task->task_status.residual;
+			break;
+		}
+		if (task->task_status.resp == SAS_TASK_COMPLETE &&
+		      task->task_status.stat == SAS_DATA_OVERRUN) {
+			res = -EMSGSIZE;
+			break;
+		} else {
+			dev_dbg(&ihost->pdev->dev,
+				"%s: task to dev %016llx response: 0x%x "
+				"status 0x%x\n", __func__,
+				SAS_ADDR(dev->sas_addr),
+				task->task_status.resp,
+				task->task_status.stat);
+			isci_free_task(ihost, task);
+			task = NULL;
+		}
+	}
+ex_err:
+	BUG_ON(retry == 3 && task != NULL);
+	isci_free_task(ihost, task);
+	return res;
+}
+
+#define DISCOVER_REQ_SIZE  16
+#define DISCOVER_RESP_SIZE 56
+
+int isci_smp_get_phy_attached_dev_type(struct isci_host *ihost,
+				       struct domain_device *dev,
+				       int phy_id, int *adt)
+{
+	struct smp_resp *disc_resp;
+	u8 *disc_req;
+	int res;
+
+	disc_resp = kzalloc(DISCOVER_RESP_SIZE, GFP_KERNEL);
+	if (!disc_resp)
+		return -ENOMEM;
+
+	disc_req = kzalloc(DISCOVER_REQ_SIZE, GFP_KERNEL);
+	if (disc_req) {
+		disc_req[0] = SMP_REQUEST;
+		disc_req[1] = SMP_DISCOVER;
+		disc_req[9] = phy_id;
+	} else {
+		kfree(disc_resp);
+		return -ENOMEM;
+	}
+	res = isci_smp_execute_task(ihost, dev, disc_req, DISCOVER_REQ_SIZE,
+				    disc_resp, DISCOVER_RESP_SIZE);
+	if (!res) {
+		if (disc_resp->result != SMP_RESP_FUNC_ACC)
+			res = disc_resp->result;
+		else
+			*adt = disc_resp->disc.attached_dev_type;
+	}
+	kfree(disc_req);
+	kfree(disc_resp);
+
+	return res;
+}
+
+static void isci_wait_for_smp_phy_reset(struct isci_remote_device *idev, int phy_num)
+{
+	struct domain_device *dev = idev->domain_dev;
+	struct isci_port *iport = idev->isci_port;
+	struct isci_host *ihost = iport->isci_host;
+	int res, iteration = 0, attached_device_type;
+	#define STP_WAIT_MSECS 25000
+	unsigned long tmo = msecs_to_jiffies(STP_WAIT_MSECS);
+	unsigned long deadline = jiffies + tmo;
+	enum {
+		SMP_PHYWAIT_PHYDOWN,
+		SMP_PHYWAIT_PHYUP,
+		SMP_PHYWAIT_DONE
+	} phy_state = SMP_PHYWAIT_PHYDOWN;
+
+	/* While there is time, wait for the phy to go away and come back */
+	while (time_is_after_jiffies(deadline) && phy_state != SMP_PHYWAIT_DONE) {
+		int event = atomic_read(&iport->event);
+
+		++iteration;
+
+		tmo = wait_event_timeout(ihost->eventq,
+					 event != atomic_read(&iport->event) ||
+					 !test_bit(IPORT_BCN_BLOCKED, &iport->flags),
+					 tmo);
+		/* link down, stop polling */
+		if (!test_bit(IPORT_BCN_BLOCKED, &iport->flags))
+			break;
+
+		dev_dbg(&ihost->pdev->dev,
+			"%s: iport %p, iteration %d,"
+			" phase %d: time_remaining %lu, bcns = %d\n",
+			__func__, iport, iteration, phy_state,
+			tmo, test_bit(IPORT_BCN_PENDING, &iport->flags));
+
+		res = isci_smp_get_phy_attached_dev_type(ihost, dev, phy_num,
+							 &attached_device_type);
+		tmo = deadline - jiffies;
+
+		if (res) {
+			dev_dbg(&ihost->pdev->dev,
+				 "%s: iteration %d, phase %d:"
+				 " SMP error=%d, time_remaining=%lu\n",
+				 __func__, iteration, phy_state, res, tmo);
+			break;
+		}
+		dev_dbg(&ihost->pdev->dev,
+			"%s: iport %p, iteration %d,"
+			" phase %d: time_remaining %lu, bcns = %d, "
+			"attdevtype = %x\n",
+			__func__, iport, iteration, phy_state,
+			tmo, test_bit(IPORT_BCN_PENDING, &iport->flags),
+			attached_device_type);
+
+		switch (phy_state) {
+		case SMP_PHYWAIT_PHYDOWN:
+			/* Has the device gone away? */
+			if (!attached_device_type)
+				phy_state = SMP_PHYWAIT_PHYUP;
+
+			break;
+
+		case SMP_PHYWAIT_PHYUP:
+			/* Has the device come back? */
+			if (attached_device_type)
+				phy_state = SMP_PHYWAIT_DONE;
+			break;
+
+		case SMP_PHYWAIT_DONE:
+			break;
+		}
+
+	}
+	dev_dbg(&ihost->pdev->dev, "%s: done\n",  __func__);
+}
+
+static int isci_reset_device(struct isci_host *ihost,
+			     struct isci_remote_device *idev)
+{
+	struct sas_phy *phy = sas_find_local_phy(idev->domain_dev);
+	struct isci_port *iport = idev->isci_port;
+	enum sci_status status;
+	unsigned long flags;
+	int rc;
+
+	dev_dbg(&ihost->pdev->dev, "%s: idev %p\n", __func__, idev);
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+	status = sci_remote_device_reset(idev);
+	if (status != SCI_SUCCESS) {
+		spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+		dev_dbg(&ihost->pdev->dev,
+			 "%s: sci_remote_device_reset(%p) returned %d!\n",
+			 __func__, idev, status);
+
+		return TMF_RESP_FUNC_FAILED;
+	}
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+	/* Make sure all pending requests are able to be fully terminated. */
+	isci_device_clear_reset_pending(ihost, idev);
+
+	/* If this is a device on an expander, disable BCN processing. */
+	if (!scsi_is_sas_phy_local(phy))
+		set_bit(IPORT_BCN_BLOCKED, &iport->flags);
+
+	rc = sas_phy_reset(phy, true);
+
+	/* Terminate in-progress I/O now. */
+	isci_remote_device_nuke_requests(ihost, idev);
+
+	/* Since all pending TCs have been cleaned, resume the RNC. */
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+	status = sci_remote_device_reset_complete(idev);
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+	/* If this is a device on an expander, bring the phy back up. */
+	if (!scsi_is_sas_phy_local(phy)) {
+		/* A phy reset will cause the device to go away then reappear.
+		 * Since libsas will take action on incoming BCNs (eg. remove
+		 * a device going through an SMP phy-control driven reset),
+		 * we need to wait until the phy comes back up before letting
+		 * discovery proceed in libsas.
+		 */
+		isci_wait_for_smp_phy_reset(idev, phy->number);
+
+		spin_lock_irqsave(&ihost->scic_lock, flags);
+		isci_port_bcn_enable(ihost, idev->isci_port);
+		spin_unlock_irqrestore(&ihost->scic_lock, flags);
+	}
+
+	if (status != SCI_SUCCESS) {
+		dev_dbg(&ihost->pdev->dev,
+			 "%s: sci_remote_device_reset_complete(%p) "
+			 "returned %d!\n", __func__, idev, status);
+	}
+
+	dev_dbg(&ihost->pdev->dev, "%s: idev %p complete.\n", __func__, idev);
+
+	return rc;
+}
+
+int isci_task_I_T_nexus_reset(struct domain_device *dev)
+{
+	struct isci_host *ihost = dev_to_ihost(dev);
+	struct isci_remote_device *idev;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+	idev = isci_lookup_device(dev);
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+	if (!idev || !test_bit(IDEV_EH, &idev->flags)) {
+		ret = TMF_RESP_FUNC_COMPLETE;
+		goto out;
+	}
+
+	ret = isci_reset_device(ihost, idev);
+ out:
+	isci_put_device(idev);
+	return ret;
+}
+
+int isci_bus_reset_handler(struct scsi_cmnd *cmd)
+{
+	struct domain_device *dev = sdev_to_domain_dev(cmd->device);
+	struct isci_host *ihost = dev_to_ihost(dev);
+	struct isci_remote_device *idev;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+	idev = isci_lookup_device(dev);
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+	if (!idev) {
+		ret = TMF_RESP_FUNC_COMPLETE;
+		goto out;
+	}
+
+	ret = isci_reset_device(ihost, idev);
+ out:
+	isci_put_device(idev);
+	return ret;
+}
diff --git a/drivers/scsi/isci/task.h b/drivers/scsi/isci/task.h
new file mode 100644
index 0000000..4a7fa90
--- /dev/null
+++ b/drivers/scsi/isci/task.h
@@ -0,0 +1,367 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _ISCI_TASK_H_
+#define _ISCI_TASK_H_
+
+#include <scsi/sas_ata.h>
+#include "host.h"
+
+struct isci_request;
+
+/**
+ * enum isci_tmf_cb_state - This enum defines the possible states in which the
+ *    TMF callback function is invoked during the TMF execution process.
+ *
+ *
+ */
+enum isci_tmf_cb_state {
+
+	isci_tmf_init_state = 0,
+	isci_tmf_started,
+	isci_tmf_timed_out
+};
+
+/**
+ * enum isci_tmf_function_codes - This enum defines the possible preparations
+ *    of task management requests.
+ *
+ *
+ */
+enum isci_tmf_function_codes {
+
+	isci_tmf_func_none      = 0,
+	isci_tmf_ssp_task_abort = TMF_ABORT_TASK,
+	isci_tmf_ssp_lun_reset  = TMF_LU_RESET,
+	isci_tmf_sata_srst_high = TMF_LU_RESET + 0x100, /* Non SCSI */
+	isci_tmf_sata_srst_low  = TMF_LU_RESET + 0x101  /* Non SCSI */
+};
+/**
+ * struct isci_tmf - This class represents the task management object which
+ *    acts as an interface to libsas for processing task management requests
+ *
+ *
+ */
+struct isci_tmf {
+
+	struct completion *complete;
+	enum sas_protocol proto;
+	union {
+		struct ssp_response_iu resp_iu;
+		struct dev_to_host_fis d2h_fis;
+		u8 rsp_buf[SSP_RESP_IU_MAX_SIZE];
+	} resp;
+	unsigned char lun[8];
+	u16 io_tag;
+	struct isci_remote_device *device;
+	enum isci_tmf_function_codes tmf_code;
+	int status;
+
+	/* The optional callback function allows the user process to
+	 * track the TMF transmit / timeout conditions.
+	 */
+	void (*cb_state_func)(
+		enum isci_tmf_cb_state,
+		struct isci_tmf *, void *);
+	void *cb_data;
+
+};
+
+static inline void isci_print_tmf(struct isci_tmf *tmf)
+{
+	if (SAS_PROTOCOL_SATA == tmf->proto)
+		dev_dbg(&tmf->device->isci_port->isci_host->pdev->dev,
+			"%s: status = %x\n"
+			"tmf->resp.d2h_fis.status = %x\n"
+			"tmf->resp.d2h_fis.error = %x\n",
+			__func__,
+			tmf->status,
+			tmf->resp.d2h_fis.status,
+			tmf->resp.d2h_fis.error);
+	else
+		dev_dbg(&tmf->device->isci_port->isci_host->pdev->dev,
+			"%s: status = %x\n"
+			"tmf->resp.resp_iu.data_present = %x\n"
+			"tmf->resp.resp_iu.status = %x\n"
+			"tmf->resp.resp_iu.data_length = %x\n"
+			"tmf->resp.resp_iu.data[0] = %x\n"
+			"tmf->resp.resp_iu.data[1] = %x\n"
+			"tmf->resp.resp_iu.data[2] = %x\n"
+			"tmf->resp.resp_iu.data[3] = %x\n",
+			__func__,
+			tmf->status,
+			tmf->resp.resp_iu.datapres,
+			tmf->resp.resp_iu.status,
+			be32_to_cpu(tmf->resp.resp_iu.response_data_len),
+			tmf->resp.resp_iu.resp_data[0],
+			tmf->resp.resp_iu.resp_data[1],
+			tmf->resp.resp_iu.resp_data[2],
+			tmf->resp.resp_iu.resp_data[3]);
+}
+
+
+int isci_task_execute_task(
+	struct sas_task *task,
+	int num,
+	gfp_t gfp_flags);
+
+int isci_task_abort_task(
+	struct sas_task *task);
+
+int isci_task_abort_task_set(
+	struct domain_device *d_device,
+	u8 *lun);
+
+int isci_task_clear_aca(
+	struct domain_device *d_device,
+	u8 *lun);
+
+int isci_task_clear_task_set(
+	struct domain_device *d_device,
+	u8 *lun);
+
+int isci_task_query_task(
+	struct sas_task *task);
+
+int isci_task_lu_reset(
+	struct domain_device *d_device,
+	u8 *lun);
+
+int isci_task_clear_nexus_port(
+	struct asd_sas_port *port);
+
+int isci_task_clear_nexus_ha(
+	struct sas_ha_struct *ha);
+
+int isci_task_I_T_nexus_reset(
+	struct domain_device *d_device);
+
+void isci_task_request_complete(
+	struct isci_host *isci_host,
+	struct isci_request *request,
+	enum sci_task_status completion_status);
+
+u16 isci_task_ssp_request_get_io_tag_to_manage(
+	struct isci_request *request);
+
+u8 isci_task_ssp_request_get_function(
+	struct isci_request *request);
+
+
+void *isci_task_ssp_request_get_response_data_address(
+	struct isci_request *request);
+
+u32 isci_task_ssp_request_get_response_data_length(
+	struct isci_request *request);
+
+int isci_queuecommand(
+	struct scsi_cmnd *scsi_cmd,
+	void (*donefunc)(struct scsi_cmnd *));
+
+int isci_bus_reset_handler(struct scsi_cmnd *cmd);
+
+/**
+ * enum isci_completion_selection - This enum defines the possible actions to
+ *    take with respect to a given request's notification back to libsas.
+ *
+ *
+ */
+enum isci_completion_selection {
+
+	isci_perform_normal_io_completion,      /* Normal notify (task_done) */
+	isci_perform_aborted_io_completion,     /* No notification.   */
+	isci_perform_error_io_completion        /* Use sas_task_abort */
+};
+
+static inline void isci_set_task_doneflags(
+	struct sas_task *task)
+{
+	/* Since no futher action will be taken on this task,
+	 * make sure to mark it complete from the lldd perspective.
+	 */
+	task->task_state_flags |= SAS_TASK_STATE_DONE;
+	task->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
+	task->task_state_flags &= ~SAS_TASK_STATE_PENDING;
+}
+/**
+ * isci_task_all_done() - This function clears the task bits to indicate the
+ *    LLDD is done with the task.
+ *
+ *
+ */
+static inline void isci_task_all_done(
+	struct sas_task *task)
+{
+	unsigned long flags;
+
+	/* Since no futher action will be taken on this task,
+	 * make sure to mark it complete from the lldd perspective.
+	 */
+	spin_lock_irqsave(&task->task_state_lock, flags);
+	isci_set_task_doneflags(task);
+	spin_unlock_irqrestore(&task->task_state_lock, flags);
+}
+
+/**
+ * isci_task_set_completion_status() - This function sets the completion status
+ *    for the request.
+ * @task: This parameter is the completed request.
+ * @response: This parameter is the response code for the completed task.
+ * @status: This parameter is the status code for the completed task.
+ *
+* @return The new notification mode for the request.
+*/
+static inline enum isci_completion_selection
+isci_task_set_completion_status(
+	struct sas_task *task,
+	enum service_response response,
+	enum exec_status status,
+	enum isci_completion_selection task_notification_selection)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&task->task_state_lock, flags);
+
+	/* If a device reset is being indicated, make sure the I/O
+	* is in the error path.
+	*/
+	if (task->task_state_flags & SAS_TASK_NEED_DEV_RESET) {
+		/* Fail the I/O to make sure it goes into the error path. */
+		response = SAS_TASK_UNDELIVERED;
+		status = SAM_STAT_TASK_ABORTED;
+
+		task_notification_selection = isci_perform_error_io_completion;
+	}
+	task->task_status.resp = response;
+	task->task_status.stat = status;
+
+	switch (task_notification_selection) {
+
+	case isci_perform_error_io_completion:
+
+		if (task->task_proto == SAS_PROTOCOL_SMP) {
+			/* There is no error escalation in the SMP case.
+			 * Convert to a normal completion to avoid the
+			 * timeout in the discovery path and to let the
+			 * next action take place quickly.
+			 */
+			task_notification_selection
+				= isci_perform_normal_io_completion;
+
+			/* Fall through to the normal case... */
+		} else {
+			/* Use sas_task_abort */
+			/* Leave SAS_TASK_STATE_DONE clear
+			 * Leave SAS_TASK_AT_INITIATOR set.
+			 */
+			break;
+		}
+
+	case isci_perform_aborted_io_completion:
+		/* This path can occur with task-managed requests as well as
+		 * requests terminated because of LUN or device resets.
+		 */
+		/* Fall through to the normal case... */
+	case isci_perform_normal_io_completion:
+		/* Normal notification (task_done) */
+		isci_set_task_doneflags(task);
+		break;
+	default:
+		WARN_ONCE(1, "unknown task_notification_selection: %d\n",
+			 task_notification_selection);
+		break;
+	}
+
+	spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+	return task_notification_selection;
+
+}
+/**
+* isci_execpath_callback() - This function is called from the task
+* execute path when the task needs to callback libsas about the submit-time
+* task failure.  The callback occurs either through the task's done function
+* or through sas_task_abort.  In the case of regular non-discovery SATA/STP I/O
+* requests, libsas takes the host lock before calling execute task.  Therefore
+* in this situation the host lock must be managed before calling the func.
+*
+* @ihost: This parameter is the controller to which the I/O request was sent.
+* @task: This parameter is the I/O request.
+* @func: This parameter is the function to call in the correct context.
+* @status: This parameter is the status code for the completed task.
+*
+*/
+static inline void isci_execpath_callback(struct isci_host *ihost,
+					  struct sas_task  *task,
+					  void (*func)(struct sas_task *))
+{
+	struct domain_device *dev = task->dev;
+
+	if (dev_is_sata(dev) && task->uldd_task) {
+		unsigned long flags;
+
+		/* Since we are still in the submit path, and since
+		 * libsas takes the host lock on behalf of SATA
+		 * devices before I/O starts (in the non-discovery case),
+		 * we need to unlock before we can call the callback function.
+		 */
+		raw_local_irq_save(flags);
+		spin_unlock(dev->sata_dev.ap->lock);
+		func(task);
+		spin_lock(dev->sata_dev.ap->lock);
+		raw_local_irq_restore(flags);
+	} else
+		func(task);
+}
+#endif /* !defined(_SCI_TASK_H_) */
diff --git a/drivers/scsi/isci/unsolicited_frame_control.c b/drivers/scsi/isci/unsolicited_frame_control.c
new file mode 100644
index 0000000..e9e1e2a
--- /dev/null
+++ b/drivers/scsi/isci/unsolicited_frame_control.c
@@ -0,0 +1,225 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "host.h"
+#include "unsolicited_frame_control.h"
+#include "registers.h"
+
+int sci_unsolicited_frame_control_construct(struct isci_host *ihost)
+{
+	struct sci_unsolicited_frame_control *uf_control = &ihost->uf_control;
+	struct sci_unsolicited_frame *uf;
+	u32 buf_len, header_len, i;
+	dma_addr_t dma;
+	size_t size;
+	void *virt;
+
+	/*
+	 * Prepare all of the memory sizes for the UF headers, UF address
+	 * table, and UF buffers themselves.
+	 */
+	buf_len = SCU_MAX_UNSOLICITED_FRAMES * SCU_UNSOLICITED_FRAME_BUFFER_SIZE;
+	header_len = SCU_MAX_UNSOLICITED_FRAMES * sizeof(struct scu_unsolicited_frame_header);
+	size = buf_len + header_len + SCU_MAX_UNSOLICITED_FRAMES * sizeof(dma_addr_t);
+
+	/*
+	 * The Unsolicited Frame buffers are set at the start of the UF
+	 * memory descriptor entry. The headers and address table will be
+	 * placed after the buffers.
+	 */
+	virt = dmam_alloc_coherent(&ihost->pdev->dev, size, &dma, GFP_KERNEL);
+	if (!virt)
+		return -ENOMEM;
+
+	/*
+	 * Program the location of the UF header table into the SCU.
+	 * Notes:
+	 * - The address must align on a 64-byte boundary. Guaranteed to be
+	 *   on 64-byte boundary already 1KB boundary for unsolicited frames.
+	 * - Program unused header entries to overlap with the last
+	 *   unsolicited frame.  The silicon will never DMA to these unused
+	 *   headers, since we program the UF address table pointers to
+	 *   NULL.
+	 */
+	uf_control->headers.physical_address = dma + buf_len;
+	uf_control->headers.array = virt + buf_len;
+
+	/*
+	 * Program the location of the UF address table into the SCU.
+	 * Notes:
+	 * - The address must align on a 64-bit boundary. Guaranteed to be on 64
+	 *   byte boundary already due to above programming headers being on a
+	 *   64-bit boundary and headers are on a 64-bytes in size.
+	 */
+	uf_control->address_table.physical_address = dma + buf_len + header_len;
+	uf_control->address_table.array = virt + buf_len + header_len;
+	uf_control->get = 0;
+
+	/*
+	 * UF buffer requirements are:
+	 * - The last entry in the UF queue is not NULL.
+	 * - There is a power of 2 number of entries (NULL or not-NULL)
+	 *   programmed into the queue.
+	 * - Aligned on a 1KB boundary. */
+
+	/*
+	 * Program the actual used UF buffers into the UF address table and
+	 * the controller's array of UFs.
+	 */
+	for (i = 0; i < SCU_MAX_UNSOLICITED_FRAMES; i++) {
+		uf = &uf_control->buffers.array[i];
+
+		uf_control->address_table.array[i] = dma;
+
+		uf->buffer = virt;
+		uf->header = &uf_control->headers.array[i];
+		uf->state  = UNSOLICITED_FRAME_EMPTY;
+
+		/*
+		 * Increment the address of the physical and virtual memory
+		 * pointers. Everything is aligned on 1k boundary with an
+		 * increment of 1k.
+		 */
+		virt += SCU_UNSOLICITED_FRAME_BUFFER_SIZE;
+		dma += SCU_UNSOLICITED_FRAME_BUFFER_SIZE;
+	}
+
+	return 0;
+}
+
+enum sci_status sci_unsolicited_frame_control_get_header(struct sci_unsolicited_frame_control *uf_control,
+							 u32 frame_index,
+							 void **frame_header)
+{
+	if (frame_index < SCU_MAX_UNSOLICITED_FRAMES) {
+		/* Skip the first word in the frame since this is a controll word used
+		 * by the hardware.
+		 */
+		*frame_header = &uf_control->buffers.array[frame_index].header->data;
+
+		return SCI_SUCCESS;
+	}
+
+	return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+}
+
+enum sci_status sci_unsolicited_frame_control_get_buffer(struct sci_unsolicited_frame_control *uf_control,
+							 u32 frame_index,
+							 void **frame_buffer)
+{
+	if (frame_index < SCU_MAX_UNSOLICITED_FRAMES) {
+		*frame_buffer = uf_control->buffers.array[frame_index].buffer;
+
+		return SCI_SUCCESS;
+	}
+
+	return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+}
+
+bool sci_unsolicited_frame_control_release_frame(struct sci_unsolicited_frame_control *uf_control,
+						 u32 frame_index)
+{
+	u32 frame_get;
+	u32 frame_cycle;
+
+	frame_get   = uf_control->get & (SCU_MAX_UNSOLICITED_FRAMES - 1);
+	frame_cycle = uf_control->get & SCU_MAX_UNSOLICITED_FRAMES;
+
+	/*
+	 * In the event there are NULL entries in the UF table, we need to
+	 * advance the get pointer in order to find out if this frame should
+	 * be released (i.e. update the get pointer)
+	 */
+	while (lower_32_bits(uf_control->address_table.array[frame_get]) == 0 &&
+	       upper_32_bits(uf_control->address_table.array[frame_get]) == 0 &&
+	       frame_get < SCU_MAX_UNSOLICITED_FRAMES)
+		frame_get++;
+
+	/*
+	 * The table has a NULL entry as it's last element.  This is
+	 * illegal.
+	 */
+	BUG_ON(frame_get >= SCU_MAX_UNSOLICITED_FRAMES);
+	if (frame_index >= SCU_MAX_UNSOLICITED_FRAMES)
+		return false;
+
+	uf_control->buffers.array[frame_index].state = UNSOLICITED_FRAME_RELEASED;
+
+	if (frame_get != frame_index) {
+		/*
+		 * Frames remain in use until we advance the get pointer
+		 * so there is nothing we can do here
+		 */
+		return false;
+	}
+
+	/*
+	 * The frame index is equal to the current get pointer so we
+	 * can now free up all of the frame entries that
+	 */
+	while (uf_control->buffers.array[frame_get].state == UNSOLICITED_FRAME_RELEASED) {
+		uf_control->buffers.array[frame_get].state = UNSOLICITED_FRAME_EMPTY;
+
+		if (frame_get+1 == SCU_MAX_UNSOLICITED_FRAMES-1) {
+			frame_cycle ^= SCU_MAX_UNSOLICITED_FRAMES;
+			frame_get = 0;
+		} else
+			frame_get++;
+	}
+
+	uf_control->get = SCU_UFQGP_GEN_BIT(ENABLE_BIT) | frame_cycle | frame_get;
+
+	return true;
+}
diff --git a/drivers/scsi/isci/unsolicited_frame_control.h b/drivers/scsi/isci/unsolicited_frame_control.h
new file mode 100644
index 0000000..31cb950
--- /dev/null
+++ b/drivers/scsi/isci/unsolicited_frame_control.h
@@ -0,0 +1,278 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _SCIC_SDS_UNSOLICITED_FRAME_CONTROL_H_
+#define _SCIC_SDS_UNSOLICITED_FRAME_CONTROL_H_
+
+#include "isci.h"
+
+#define SCU_UNSOLICITED_FRAME_HEADER_DATA_DWORDS 15
+
+/**
+ * struct scu_unsolicited_frame_header -
+ *
+ * This structure delineates the format of an unsolicited frame header. The
+ * first DWORD are UF attributes defined by the silicon architecture. The data
+ * depicts actual header information received on the link.
+ */
+struct scu_unsolicited_frame_header {
+	/**
+	 * This field indicates if there is an Initiator Index Table entry with
+	 * which this header is associated.
+	 */
+	u32 iit_exists:1;
+
+	/**
+	 * This field simply indicates the protocol type (i.e. SSP, STP, SMP).
+	 */
+	u32 protocol_type:3;
+
+	/**
+	 * This field indicates if the frame is an address frame (IAF or OAF)
+	 * or if it is a information unit frame.
+	 */
+	u32 is_address_frame:1;
+
+	/**
+	 * This field simply indicates the connection rate at which the frame
+	 * was received.
+	 */
+	u32 connection_rate:4;
+
+	u32 reserved:23;
+
+	/**
+	 * This field represents the actual header data received on the link.
+	 */
+	u32 data[SCU_UNSOLICITED_FRAME_HEADER_DATA_DWORDS];
+
+};
+
+
+
+/**
+ * enum unsolicited_frame_state -
+ *
+ * This enumeration represents the current unsolicited frame state.  The
+ * controller object can not updtate the hardware unsolicited frame put pointer
+ * unless it has already processed the priror unsolicited frames.
+ */
+enum unsolicited_frame_state {
+	/**
+	 * This state is when the frame is empty and not in use.  It is
+	 * different from the released state in that the hardware could DMA
+	 * data to this frame buffer.
+	 */
+	UNSOLICITED_FRAME_EMPTY,
+
+	/**
+	 * This state is set when the frame buffer is in use by by some
+	 * object in the system.
+	 */
+	UNSOLICITED_FRAME_IN_USE,
+
+	/**
+	 * This state is set when the frame is returned to the free pool
+	 * but one or more frames prior to this one are still in use.
+	 * Once all of the frame before this one are freed it will go to
+	 * the empty state.
+	 */
+	UNSOLICITED_FRAME_RELEASED,
+
+	UNSOLICITED_FRAME_MAX_STATES
+};
+
+/**
+ * struct sci_unsolicited_frame -
+ *
+ * This is the unsolicited frame data structure it acts as the container for
+ * the current frame state, frame header and frame buffer.
+ */
+struct sci_unsolicited_frame {
+	/**
+	 * This field contains the current frame state
+	 */
+	enum unsolicited_frame_state state;
+
+	/**
+	 * This field points to the frame header data.
+	 */
+	struct scu_unsolicited_frame_header *header;
+
+	/**
+	 * This field points to the frame buffer data.
+	 */
+	void *buffer;
+
+};
+
+/**
+ * struct sci_uf_header_array -
+ *
+ * This structure contains all of the unsolicited frame header information.
+ */
+struct sci_uf_header_array {
+	/**
+	 * This field is represents a virtual pointer to the start
+	 * address of the UF address table.  The table contains
+	 * 64-bit pointers as required by the hardware.
+	 */
+	struct scu_unsolicited_frame_header *array;
+
+	/**
+	 * This field specifies the physical address location for the UF
+	 * buffer array.
+	 */
+	dma_addr_t physical_address;
+
+};
+
+/**
+ * struct sci_uf_buffer_array -
+ *
+ * This structure contains all of the unsolicited frame buffer (actual payload)
+ * information.
+ */
+struct sci_uf_buffer_array {
+	/**
+	 * This field is the unsolicited frame data its used to manage
+	 * the data for the unsolicited frame requests.  It also represents
+	 * the virtual address location that corresponds to the
+	 * physical_address field.
+	 */
+	struct sci_unsolicited_frame array[SCU_MAX_UNSOLICITED_FRAMES];
+
+	/**
+	 * This field specifies the physical address location for the UF
+	 * buffer array.
+	 */
+	dma_addr_t physical_address;
+};
+
+/**
+ * struct sci_uf_address_table_array -
+ *
+ * This object maintains all of the unsolicited frame address table specific
+ * data.  The address table is a collection of 64-bit pointers that point to
+ * 1KB buffers into which the silicon will DMA unsolicited frames.
+ */
+struct sci_uf_address_table_array {
+	/**
+	 * This field represents a virtual pointer that refers to the
+	 * starting address of the UF address table.
+	 * 64-bit pointers are required by the hardware.
+	 */
+	dma_addr_t *array;
+
+	/**
+	 * This field specifies the physical address location for the UF
+	 * address table.
+	 */
+	dma_addr_t physical_address;
+
+};
+
+/**
+ * struct sci_unsolicited_frame_control -
+ *
+ * This object contains all of the data necessary to handle unsolicited frames.
+ */
+struct sci_unsolicited_frame_control {
+	/**
+	 * This field is the software copy of the unsolicited frame queue
+	 * get pointer.  The controller object writes this value to the
+	 * hardware to let the hardware put more unsolicited frame entries.
+	 */
+	u32 get;
+
+	/**
+	 * This field contains all of the unsolicited frame header
+	 * specific fields.
+	 */
+	struct sci_uf_header_array headers;
+
+	/**
+	 * This field contains all of the unsolicited frame buffer
+	 * specific fields.
+	 */
+	struct sci_uf_buffer_array buffers;
+
+	/**
+	 * This field contains all of the unsolicited frame address table
+	 * specific fields.
+	 */
+	struct sci_uf_address_table_array address_table;
+
+};
+
+struct isci_host;
+
+int sci_unsolicited_frame_control_construct(struct isci_host *ihost);
+
+enum sci_status sci_unsolicited_frame_control_get_header(
+	struct sci_unsolicited_frame_control *uf_control,
+	u32 frame_index,
+	void **frame_header);
+
+enum sci_status sci_unsolicited_frame_control_get_buffer(
+	struct sci_unsolicited_frame_control *uf_control,
+	u32 frame_index,
+	void **frame_buffer);
+
+bool sci_unsolicited_frame_control_release_frame(
+	struct sci_unsolicited_frame_control *uf_control,
+	u32 frame_index);
+
+#endif /* _SCIC_SDS_UNSOLICITED_FRAME_CONTROL_H_ */
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 6d5d6e6..af9b781 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -1709,12 +1709,13 @@
 static int __devinit atmel_serial_probe(struct platform_device *pdev)
 {
 	struct atmel_uart_port *port;
+	struct atmel_uart_data *pdata = pdev->dev.platform_data;
 	void *data;
 	int ret;
 
 	BUILD_BUG_ON(ATMEL_SERIAL_RINGSIZE & (ATMEL_SERIAL_RINGSIZE - 1));
 
-	port = &atmel_ports[pdev->id];
+	port = &atmel_ports[pdata->num];
 	port->backup_imr = 0;
 
 	atmel_init_port(port, pdev);
diff --git a/drivers/video/amba-clcd.c b/drivers/video/amba-clcd.c
index 5fc983c..cf03ad0 100644
--- a/drivers/video/amba-clcd.c
+++ b/drivers/video/amba-clcd.c
@@ -447,6 +447,8 @@
 		goto out;
 	}
 
+	fb->fb.device		= &fb->dev->dev;
+
 	fb->fb.fix.mmio_start	= fb->dev->res.start;
 	fb->fb.fix.mmio_len	= resource_size(&fb->dev->res);
 
diff --git a/drivers/video/fsl-diu-fb.c b/drivers/video/fsl-diu-fb.c
index bedf5be..0acc7d6 100644
--- a/drivers/video/fsl-diu-fb.c
+++ b/drivers/video/fsl-diu-fb.c
@@ -555,8 +555,6 @@
 static int fsl_diu_check_var(struct fb_var_screeninfo *var,
 				struct fb_info *info)
 {
-	unsigned long htotal, vtotal;
-
 	pr_debug("check_var xres: %d\n", var->xres);
 	pr_debug("check_var yres: %d\n", var->yres);
 
@@ -635,20 +633,6 @@
 
 		break;
 	}
-	/* If the pixclock is below the minimum spec'd value then set to
-	 * refresh rate for 60Hz since this is supported by most monitors.
-	 * Refer to Documentation/fb/ for calculations.
-	 */
-	if ((var->pixclock < MIN_PIX_CLK) || (var->pixclock > MAX_PIX_CLK)) {
-		htotal = var->xres + var->right_margin + var->hsync_len +
-		    var->left_margin;
-		vtotal = var->yres + var->lower_margin + var->vsync_len +
-		    var->upper_margin;
-		var->pixclock = (vtotal * htotal * 6UL) / 100UL;
-		var->pixclock = KHZ2PICOS(var->pixclock);
-		pr_debug("pixclock set for 60Hz refresh = %u ps\n",
-			var->pixclock);
-	}
 
 	var->height = -1;
 	var->width = -1;
diff --git a/drivers/video/geode/gx1fb_core.c b/drivers/video/geode/gx1fb_core.c
index c6b554f..5a5d092 100644
--- a/drivers/video/geode/gx1fb_core.c
+++ b/drivers/video/geode/gx1fb_core.c
@@ -29,7 +29,7 @@
 static char panel_option[32] = "";
 
 /* Modes relevant to the GX1 (taken from modedb.c) */
-static const struct fb_videomode __initdata gx1_modedb[] = {
+static const struct fb_videomode __devinitdata gx1_modedb[] = {
 	/* 640x480-60 VESA */
 	{ NULL, 60, 640, 480, 39682,  48, 16, 33, 10, 96, 2,
 	  0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
@@ -195,7 +195,7 @@
 	return par->vid_ops->blank_display(info, blank_mode);
 }
 
-static int __init gx1fb_map_video_memory(struct fb_info *info, struct pci_dev *dev)
+static int __devinit gx1fb_map_video_memory(struct fb_info *info, struct pci_dev *dev)
 {
 	struct geodefb_par *par = info->par;
 	unsigned gx_base;
@@ -268,7 +268,7 @@
 	.fb_imageblit	= cfb_imageblit,
 };
 
-static struct fb_info * __init gx1fb_init_fbinfo(struct device *dev)
+static struct fb_info * __devinit gx1fb_init_fbinfo(struct device *dev)
 {
 	struct geodefb_par *par;
 	struct fb_info *info;
@@ -318,7 +318,7 @@
 	return info;
 }
 
-static int __init gx1fb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+static int __devinit gx1fb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	struct geodefb_par *par;
 	struct fb_info *info;
@@ -382,7 +382,7 @@
 	return ret;
 }
 
-static void gx1fb_remove(struct pci_dev *pdev)
+static void __devexit gx1fb_remove(struct pci_dev *pdev)
 {
 	struct fb_info *info = pci_get_drvdata(pdev);
 	struct geodefb_par *par = info->par;
@@ -441,7 +441,7 @@
 	.name		= "gx1fb",
 	.id_table	= gx1fb_id_table,
 	.probe		= gx1fb_probe,
-	.remove		= gx1fb_remove,
+	.remove		= __devexit_p(gx1fb_remove),
 };
 
 static int __init gx1fb_init(void)
@@ -456,7 +456,7 @@
 	return pci_register_driver(&gx1fb_driver);
 }
 
-static void __exit gx1fb_cleanup(void)
+static void __devexit gx1fb_cleanup(void)
 {
 	pci_unregister_driver(&gx1fb_driver);
 }
diff --git a/drivers/video/hecubafb.c b/drivers/video/hecubafb.c
index fbef15f..614251a 100644
--- a/drivers/video/hecubafb.c
+++ b/drivers/video/hecubafb.c
@@ -233,7 +233,7 @@
 
 	videomemory = vzalloc(videomemorysize);
 	if (!videomemory)
-		return retval;
+		goto err_videomem_alloc;
 
 	info = framebuffer_alloc(sizeof(struct hecubafb_par), &dev->dev);
 	if (!info)
@@ -275,6 +275,7 @@
 	framebuffer_release(info);
 err_fballoc:
 	vfree(videomemory);
+err_videomem_alloc:
 	module_put(board->owner);
 	return retval;
 }
diff --git a/drivers/video/sh_mobile_meram.c b/drivers/video/sh_mobile_meram.c
index 9170c82..cc7d732 100644
--- a/drivers/video/sh_mobile_meram.c
+++ b/drivers/video/sh_mobile_meram.c
@@ -218,7 +218,7 @@
 		icb_offset = 0xc0000000 | (cfg->current_reg << 23);
 
 	*icb_addr_y = icb_offset | (cfg->icb[0].marker_icb << 24);
-	if ((*icb_addr_c) && is_nvcolor(cfg->pixelformat))
+	if (is_nvcolor(cfg->pixelformat))
 		*icb_addr_c = icb_offset | (cfg->icb[1].marker_icb << 24);
 }
 
diff --git a/drivers/video/sm501fb.c b/drivers/video/sm501fb.c
index 87f0be1..6294dca 100644
--- a/drivers/video/sm501fb.c
+++ b/drivers/video/sm501fb.c
@@ -1664,7 +1664,7 @@
 			   resource_size(info->regs_res));
 }
 
-static int sm501fb_init_fb(struct fb_info *fb,
+static int __devinit sm501fb_init_fb(struct fb_info *fb,
 			   enum sm501_controller head,
 			   const char *fbname)
 {
diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c
index 52b0f3e..816a4fd 100644
--- a/drivers/video/udlfb.c
+++ b/drivers/video/udlfb.c
@@ -1233,8 +1233,12 @@
 			if (dlfb_is_valid_mode(&info->monspecs.modedb[i], info))
 				fb_add_videomode(&info->monspecs.modedb[i],
 					&info->modelist);
-			else /* if we've removed top/best mode */
-				info->monspecs.misc &= ~FB_MISC_1ST_DETAIL;
+			else {
+				if (i == 0)
+					/* if we've removed top/best mode */
+					info->monspecs.misc
+						&= ~FB_MISC_1ST_DETAIL;
+			}
 		}
 
 		default_vmode = fb_find_best_display(&info->monspecs,
diff --git a/drivers/video/vesafb.c b/drivers/video/vesafb.c
index a99bbe8..501b340 100644
--- a/drivers/video/vesafb.c
+++ b/drivers/video/vesafb.c
@@ -175,6 +175,7 @@
 
 static void vesafb_destroy(struct fb_info *info)
 {
+	fb_dealloc_cmap(&info->cmap);
 	if (info->screen_base)
 		iounmap(info->screen_base);
 	release_mem_region(info->apertures->ranges[0].base, info->apertures->ranges[0].size);
diff --git a/firmware/Makefile b/firmware/Makefile
index 0d15a3d..5f43bfb 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -82,6 +82,7 @@
 fw-shipped-$(CONFIG_PCMCIA_SMC91C92) += ositech/Xilinx7OD.bin
 fw-shipped-$(CONFIG_SCSI_ADVANSYS) += advansys/mcode.bin advansys/38C1600.bin \
 				      advansys/3550.bin advansys/38C0800.bin
+fw-shipped-$(CONFIG_SCSI_ISCI) += isci/isci_firmware.bin
 fw-shipped-$(CONFIG_SCSI_QLOGIC_1280) += qlogic/1040.bin qlogic/1280.bin \
 					 qlogic/12160.bin
 fw-shipped-$(CONFIG_SCSI_QLOGICPTI) += qlogic/isp1000.bin
diff --git a/firmware/isci/isci_firmware.bin.ihex b/firmware/isci/isci_firmware.bin.ihex
new file mode 100644
index 0000000..2e66195
--- /dev/null
+++ b/firmware/isci/isci_firmware.bin.ihex
@@ -0,0 +1,16 @@
+:10000000495343554F454D42E80018100002000087
+:1000100000000000000000000101000000000000DE
+:10002000FFFFCF5F0100000008DD0B0000FC0F00A8
+:10003000097C0B006EFC0A00FFFFCF5F010000008F
+:1000400008DD0B0000FC0F00097C0B006EFC0A00B1
+:10005000FFFFCF5F0100000008DD0B0000FC0F0078
+:10006000097C0B006EFC0A00FFFFCF5F010000005F
+:1000700008DD0B0000FC0F00097C0B006EFC0A0081
+:100080000101000000000000FFFFCF5F0200000040
+:1000900008DD0B0000FC0F00097C0B006EFC0A0061
+:1000A000FFFFCF5F0200000008DD0B0000FC0F0027
+:1000B000097C0B006EFC0A00FFFFCF5F020000000E
+:1000C00008DD0B0000FC0F00097C0B006EFC0A0031
+:1000D000FFFFCF5F0200000008DD0B0000FC0F00F7
+:0800E000097C0B006EFC0A0014
+:00000001FF
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 9542f07..4698a5c 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -290,7 +290,6 @@
 	struct ceph_inode_info *ci = ceph_inode(inode);
 	u64 pos, this_len;
 	int io_align, page_align;
-	int page_off = off & ~PAGE_CACHE_MASK; /* first byte's offset in page */
 	int left, pages_left;
 	int read;
 	struct page **page_pos;
@@ -326,12 +325,11 @@
 	     ret, hit_stripe ? " HITSTRIPE" : "", was_short ? " SHORT" : "");
 
 	if (ret > 0) {
-		int didpages =
-			((pos & ~PAGE_CACHE_MASK) + ret) >> PAGE_CACHE_SHIFT;
+		int didpages = (page_align + ret) >> PAGE_CACHE_SHIFT;
 
 		if (read < pos - off) {
 			dout(" zero gap %llu to %llu\n", off + read, pos);
-			ceph_zero_page_vector_range(page_off + read,
+			ceph_zero_page_vector_range(page_align + read,
 						    pos - off - read, pages);
 		}
 		pos += ret;
@@ -356,7 +354,7 @@
 				left = inode->i_size - pos;
 
 			dout("zero tail %d\n", left);
-			ceph_zero_page_vector_range(page_off + read, left,
+			ceph_zero_page_vector_range(page_align + read, left,
 						    pages);
 			read += left;
 		}
@@ -478,9 +476,6 @@
 	else
 		pos = *offset;
 
-	io_align = pos & ~PAGE_MASK;
-	buf_align = (unsigned long)data & ~PAGE_MASK;
-
 	ret = filemap_write_and_wait_range(inode->i_mapping, pos, pos + left);
 	if (ret < 0)
 		return ret;
@@ -504,6 +499,8 @@
 	 * boundary.  this isn't atomic, unfortunately.  :(
 	 */
 more:
+	io_align = pos & ~PAGE_MASK;
+	buf_align = (unsigned long)data & ~PAGE_MASK;
 	len = left;
 	if (file->f_flags & O_DIRECT) {
 		/* write from beginning of first page, regardless of
@@ -593,6 +590,7 @@
 		pos += len;
 		written += len;
 		left -= len;
+		data += written;
 		if (left)
 			goto more;
 
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 7f540df..c8cb83e 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -2474,14 +2474,6 @@
 	if (rc < 0)
 		return rc;
 
-	rc = socket->ops->connect(socket, saddr, slen, 0);
-	if (rc < 0) {
-		cFYI(1, "Error %d connecting to server", rc);
-		sock_release(socket);
-		server->ssocket = NULL;
-		return rc;
-	}
-
 	/*
 	 * Eventually check for other socket options to change from
 	 * the default. sock_setsockopt not used because it expects
@@ -2510,6 +2502,14 @@
 		 socket->sk->sk_sndbuf,
 		 socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo);
 
+	rc = socket->ops->connect(socket, saddr, slen, 0);
+	if (rc < 0) {
+		cFYI(1, "Error %d connecting to server", rc);
+		sock_release(socket);
+		server->ssocket = NULL;
+		return rc;
+	}
+
 	if (sport == htons(RFC1001_PORT))
 		rc = ip_rfc1001_connect(server);
 
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index b49b555..84a47b7 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -500,7 +500,7 @@
 out_put_hidden_dir:
 	iput(sbi->hidden_dir);
 out_put_root:
-	iput(sbi->alloc_file);
+	iput(root);
 out_put_alloc_file:
 	iput(sbi->alloc_file);
 out_close_cat_tree:
diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c
index 3031d81..4ac88ff 100644
--- a/fs/hfsplus/wrapper.c
+++ b/fs/hfsplus/wrapper.c
@@ -36,6 +36,7 @@
 {
 	DECLARE_COMPLETION_ONSTACK(wait);
 	struct bio *bio;
+	int ret = 0;
 
 	bio = bio_alloc(GFP_NOIO, 1);
 	bio->bi_sector = sector;
@@ -54,8 +55,10 @@
 	wait_for_completion(&wait);
 
 	if (!bio_flagged(bio, BIO_UPTODATE))
-		return -EIO;
-	return 0;
+		ret = -EIO;
+
+	bio_put(bio);
+	return ret;
 }
 
 static int hfsplus_read_mdb(void *bufptr, struct hfsplus_wd *wd)
diff --git a/include/linux/fsl-diu-fb.h b/include/linux/fsl-diu-fb.h
index 781d467..daa9952 100644
--- a/include/linux/fsl-diu-fb.h
+++ b/include/linux/fsl-diu-fb.h
@@ -24,12 +24,6 @@
  * See mpc8610fb_set_par(), map_video_memory(), and unmap_video_memory()
  */
 #define MEM_ALLOC_THRESHOLD (1024*768*4+32)
-/* Minimum value that the pixel clock can be set to in pico seconds
- * This is determined by platform clock/3 where the minimum platform
- * clock is 533MHz. This gives 5629 pico seconds.
- */
-#define MIN_PIX_CLK 5629
-#define MAX_PIX_CLK 96096
 
 #include <linux/types.h>
 
diff --git a/include/sound/sb16_csp.h b/include/sound/sb16_csp.h
index 736eac7..af1b49e 100644
--- a/include/sound/sb16_csp.h
+++ b/include/sound/sb16_csp.h
@@ -99,7 +99,14 @@
 /* get CSP information */
 #define SNDRV_SB_CSP_IOCTL_INFO		_IOR('H', 0x10, struct snd_sb_csp_info)
 /* load microcode to CSP */
-#define SNDRV_SB_CSP_IOCTL_LOAD_CODE	_IOW('H', 0x11, struct snd_sb_csp_microcode)
+/* NOTE: struct snd_sb_csp_microcode overflows the max size (13 bits)
+ * defined for some architectures like MIPS, and it leads to build errors.
+ * (x86 and co have 14-bit size, thus it's valid, though.)
+ * As a workaround for skipping the size-limit check, here we don't use the
+ * normal _IOW() macro but _IOC() with the manual argument.
+ */
+#define SNDRV_SB_CSP_IOCTL_LOAD_CODE	\
+	_IOC(_IOC_WRITE, 'H', 0x11, sizeof(struct snd_sb_csp_microcode))
 /* unload microcode from CSP */
 #define SNDRV_SB_CSP_IOCTL_UNLOAD_CODE	_IO('H', 0x12)
 /* start CSP */
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 9cb627a..7330c27 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -477,8 +477,9 @@
 	calc_layout(osdc, vino, layout, off, plen, req, ops);
 	req->r_file_layout = *layout;  /* keep a copy */
 
-	/* in case it differs from natural alignment that calc_layout
-	   filled in for us */
+	/* in case it differs from natural (file) alignment that
+	   calc_layout filled in for us */
+	req->r_num_pages = calc_pages_for(page_align, *plen);
 	req->r_page_alignment = page_align;
 
 	ceph_osdc_build_request(req, off, plen, ops,
@@ -2027,8 +2028,9 @@
 		int want = calc_pages_for(req->r_page_alignment, data_len);
 
 		if (unlikely(req->r_num_pages < want)) {
-			pr_warning("tid %lld reply %d > expected %d pages\n",
-				   tid, want, m->nr_pages);
+			pr_warning("tid %lld reply has %d bytes %d pages, we"
+				   " had only %d pages ready\n", tid, data_len,
+				   want, req->r_num_pages);
 			*skip = 1;
 			ceph_msg_put(m);
 			m = NULL;
diff --git a/sound/atmel/abdac.c b/sound/atmel/abdac.c
index 6e24091..bfee60c 100644
--- a/sound/atmel/abdac.c
+++ b/sound/atmel/abdac.c
@@ -599,4 +599,4 @@
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Driver for Atmel Audio Bitstream DAC (ABDAC)");
-MODULE_AUTHOR("Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>");
+MODULE_AUTHOR("Hans-Christian Egtvedt <egtvedt@samfundet.no>");
diff --git a/sound/atmel/ac97c.c b/sound/atmel/ac97c.c
index b310702..ac35222 100644
--- a/sound/atmel/ac97c.c
+++ b/sound/atmel/ac97c.c
@@ -1199,4 +1199,4 @@
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Driver for Atmel AC97 controller");
-MODULE_AUTHOR("Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>");
+MODULE_AUTHOR("Hans-Christian Egtvedt <egtvedt@samfundet.no>");
diff --git a/sound/pci/cs5535audio/cs5535audio_pcm.c b/sound/pci/cs5535audio/cs5535audio_pcm.c
index f16bc8a..e083122 100644
--- a/sound/pci/cs5535audio/cs5535audio_pcm.c
+++ b/sound/pci/cs5535audio/cs5535audio_pcm.c
@@ -149,7 +149,7 @@
 			&((struct cs5535audio_dma_desc *) dma->desc_buf.area)[i];
 		desc->addr = cpu_to_le32(addr);
 		desc->size = cpu_to_le32(period_bytes);
-		desc->ctlreserved = cpu_to_le32(PRD_EOP);
+		desc->ctlreserved = cpu_to_le16(PRD_EOP);
 		desc_addr += sizeof(struct cs5535audio_dma_desc);
 		addr += period_bytes;
 	}
@@ -157,7 +157,7 @@
 	lastdesc = &((struct cs5535audio_dma_desc *) dma->desc_buf.area)[periods];
 	lastdesc->addr = cpu_to_le32((u32) dma->desc_buf.addr);
 	lastdesc->size = 0;
-	lastdesc->ctlreserved = cpu_to_le32(PRD_JMP);
+	lastdesc->ctlreserved = cpu_to_le16(PRD_JMP);
 	jmpprd_addr = cpu_to_le32(lastdesc->addr +
 				  (sizeof(struct cs5535audio_dma_desc)*periods));
 
diff --git a/sound/pci/hda/hda_eld.c b/sound/pci/hda/hda_eld.c
index b05f7be..e3e8531 100644
--- a/sound/pci/hda/hda_eld.c
+++ b/sound/pci/hda/hda_eld.c
@@ -294,7 +294,7 @@
 		snd_printd(KERN_INFO "HDMI: out of range MNL %d\n", mnl);
 		goto out_fail;
 	} else
-		strlcpy(e->monitor_name, buf + ELD_FIXED_BYTES, mnl);
+		strlcpy(e->monitor_name, buf + ELD_FIXED_BYTES, mnl + 1);
 
 	for (i = 0; i < e->sad_count; i++) {
 		if (ELD_FIXED_BYTES + mnl + 3 * (i + 1) > size) {
diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
index 694b9daf..7bbc5f2 100644
--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -3074,6 +3074,7 @@
 };
 
 static const struct snd_pci_quirk cxt5066_cfg_tbl[] = {
+	SND_PCI_QUIRK(0x1025, 0x054c, "Acer Aspire 3830TG", CXT5066_AUTO),
 	SND_PCI_QUIRK_MASK(0x1025, 0xff00, 0x0400, "Acer", CXT5066_IDEAPAD),
 	SND_PCI_QUIRK(0x1028, 0x02d8, "Dell Vostro", CXT5066_DELL_VOSTRO),
 	SND_PCI_QUIRK(0x1028, 0x02f5, "Dell Vostro 320", CXT5066_IDEAPAD),
@@ -4389,6 +4390,8 @@
 	  .patch = patch_cxt5066 },
 	{ .id = 0x14f15069, .name = "CX20585",
 	  .patch = patch_cxt5066 },
+	{ .id = 0x14f1506c, .name = "CX20588",
+	  .patch = patch_cxt5066 },
 	{ .id = 0x14f1506e, .name = "CX20590",
 	  .patch = patch_cxt5066 },
 	{ .id = 0x14f15097, .name = "CX20631",
@@ -4417,6 +4420,7 @@
 MODULE_ALIAS("snd-hda-codec-id:14f15067");
 MODULE_ALIAS("snd-hda-codec-id:14f15068");
 MODULE_ALIAS("snd-hda-codec-id:14f15069");
+MODULE_ALIAS("snd-hda-codec-id:14f1506c");
 MODULE_ALIAS("snd-hda-codec-id:14f1506e");
 MODULE_ALIAS("snd-hda-codec-id:14f15097");
 MODULE_ALIAS("snd-hda-codec-id:14f15098");
diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
index 3f08afc..c8e402f 100644
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -896,11 +896,11 @@
 	unsigned char max_channels_in;
 	unsigned char max_channels_out;
 
-	char *channel_map_in;
-	char *channel_map_out;
+	signed char *channel_map_in;
+	signed char *channel_map_out;
 
-	char *channel_map_in_ss, *channel_map_in_ds, *channel_map_in_qs;
-	char *channel_map_out_ss, *channel_map_out_ds, *channel_map_out_qs;
+	signed char *channel_map_in_ss, *channel_map_in_ds, *channel_map_in_qs;
+	signed char *channel_map_out_ss, *channel_map_out_ds, *channel_map_out_qs;
 
 	char **port_names_in;
 	char **port_names_out;
diff --git a/sound/spi/at73c213.c b/sound/spi/at73c213.c
index 337a002..4dd051b 100644
--- a/sound/spi/at73c213.c
+++ b/sound/spi/at73c213.c
@@ -1124,6 +1124,6 @@
 }
 module_exit(at73c213_exit);
 
-MODULE_AUTHOR("Hans-Christian Egtvedt <hcegtvedt@atmel.com>");
+MODULE_AUTHOR("Hans-Christian Egtvedt <egtvedt@samfundet.no>");
 MODULE_DESCRIPTION("Sound driver for AT73C213 with Atmel SSC");
 MODULE_LICENSE("GPL");