powerpc: Merge in 64-bit powermac support.
This brings in a lot of changes from arch/ppc64/kernel/pmac_*.c to
arch/powerpc/platforms/powermac/*.c and makes various minor tweaks
elsewhere. On the powermac we now initialize ppc_md by copying
the whole pmac_md structure into it, which required some changes in
the ordering of initializations of individual fields of it.
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index e70f704..27f122e 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -290,6 +290,7 @@
config PPC_PMAC64
bool
depends on PPC_PMAC && POWER4
+ select U3_DART
default y
config PPC_PREP
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 72b0d26e..147215a 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -1501,20 +1501,17 @@
.section ".text";
.align 2 ;
- .globl pmac_secondary_start_1
-pmac_secondary_start_1:
- li r24, 1
- b .pmac_secondary_start
-
- .globl pmac_secondary_start_2
-pmac_secondary_start_2:
- li r24, 2
- b .pmac_secondary_start
-
- .globl pmac_secondary_start_3
-pmac_secondary_start_3:
- li r24, 3
- b .pmac_secondary_start
+ .globl __secondary_start_pmac_0
+__secondary_start_pmac_0:
+ /* NB the entries for cpus 0, 1, 2 must each occupy 8 bytes. */
+ li r24,0
+ b 1f
+ li r24,1
+ b 1f
+ li r24,2
+ b 1f
+ li r24,3
+1:
_GLOBAL(pmac_secondary_start)
/* turn on 64-bit mode */
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 9b1baaa..095659d 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -772,7 +772,7 @@
}
r = *p++;
#ifdef CONFIG_PPC64
- if (s) {
+ if (s > 1) {
r <<= 32;
r |= *(p++);
}
@@ -2059,7 +2059,7 @@
reloc_got2(-offset);
#endif
- __start(hdr, 0, 0);
+ __start(hdr, KERNELBASE + offset, 0);
return 0;
}
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index b9269c0..2d7fdeb 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -464,14 +464,11 @@
strlcpy(cmd_line, CONFIG_CMDLINE, sizeof(cmd_line));
#endif /* CONFIG_CMDLINE */
+ platform_init();
+
#ifdef CONFIG_6xx
ppc_md.power_save = ppc6xx_idle;
#endif
-#ifdef CONFIG_POWER4
- ppc_md.power_save = power4_idle;
-#endif
-
- platform_init();
if (ppc_md.progress)
ppc_md.progress("id mach(): done", 0x200);
diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile
index da744d5..9b54e80 100644
--- a/arch/powerpc/platforms/Makefile
+++ b/arch/powerpc/platforms/Makefile
@@ -1,4 +1,4 @@
-ifeq ($(CONFIG_PPC32),y)
+ifeq ($(CONFIG_PPC_MERGE),y)
obj-$(CONFIG_PPC_PMAC) += powermac/
endif
obj-$(CONFIG_4xx) += 4xx/
diff --git a/arch/powerpc/platforms/powermac/Makefile b/arch/powerpc/platforms/powermac/Makefile
index 74712ed..4369676 100644
--- a/arch/powerpc/platforms/powermac/Makefile
+++ b/arch/powerpc/platforms/powermac/Makefile
@@ -1,8 +1,8 @@
-obj-$(CONFIG_PPC_PMAC) += pic.o setup.o time.o feature.o pci.o \
+obj-y += pic.o setup.o time.o feature.o pci.o \
sleep.o low_i2c.o cache.o
obj-$(CONFIG_PMAC_BACKLIGHT) += backlight.o
obj-$(CONFIG_CPU_FREQ_PMAC) += cpufreq.o
-ifeq ($(CONFIG_PPC_PMAC),y)
obj-$(CONFIG_NVRAM) += nvram.o
+# ppc64 pmac doesn't define CONFIG_NVRAM but needs nvram stuff
+obj-$(CONFIG_PPC64) += nvram.o
obj-$(CONFIG_SMP) += smp.o
-endif
diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c
index 243a24f..10f1d94 100644
--- a/arch/powerpc/platforms/powermac/feature.c
+++ b/arch/powerpc/platforms/powermac/feature.c
@@ -2960,7 +2960,6 @@
void __init pmac_check_ht_link(void)
{
-#if 0 /* Disabled for now */
u32 ufreq, freq, ucfg, cfg;
struct device_node *pcix_node;
u8 px_bus, px_devfn;
@@ -2991,10 +2990,8 @@
early_read_config_dword(px_hose, px_bus, px_devfn, 0xc8, &cfg);
early_read_config_dword(px_hose, px_bus, px_devfn, 0xd0, &freq);
dump_HT_speeds("PCI-X HT Downlink", cfg, freq);
-#endif
}
-
-#endif /* CONFIG_POWER4 */
+#endif /* 0 */
/*
* Early video resume hook
diff --git a/arch/powerpc/platforms/powermac/nvram.c b/arch/powerpc/platforms/powermac/nvram.c
index 8c9b008..4042e2f 100644
--- a/arch/powerpc/platforms/powermac/nvram.c
+++ b/arch/powerpc/platforms/powermac/nvram.c
@@ -47,7 +47,8 @@
/* On Core99, nvram is either a sharp, a micron or an AMD flash */
#define SM_FLASH_STATUS_DONE 0x80
-#define SM_FLASH_STATUS_ERR 0x38
+#define SM_FLASH_STATUS_ERR 0x38
+
#define SM_FLASH_CMD_ERASE_CONFIRM 0xd0
#define SM_FLASH_CMD_ERASE_SETUP 0x20
#define SM_FLASH_CMD_RESET 0xff
@@ -75,11 +76,11 @@
* Read and write the non-volatile RAM on PowerMacs and CHRP machines.
*/
static int nvram_naddrs;
-static volatile unsigned char *nvram_addr;
static volatile unsigned char *nvram_data;
-static int nvram_mult, is_core_99;
+static int is_core_99;
static int core99_bank = 0;
static int nvram_partitions[3];
+// XXX Turn that into a sem
static DEFINE_SPINLOCK(nv_lock);
extern int pmac_newworld;
@@ -105,6 +106,52 @@
nvram_image[addr] = val;
}
+static ssize_t core99_nvram_read(char *buf, size_t count, loff_t *index)
+{
+ int i;
+
+ if (nvram_image == NULL)
+ return -ENODEV;
+ if (*index > NVRAM_SIZE)
+ return 0;
+
+ i = *index;
+ if (i + count > NVRAM_SIZE)
+ count = NVRAM_SIZE - i;
+
+ memcpy(buf, &nvram_image[i], count);
+ *index = i + count;
+ return count;
+}
+
+static ssize_t core99_nvram_write(char *buf, size_t count, loff_t *index)
+{
+ int i;
+
+ if (nvram_image == NULL)
+ return -ENODEV;
+ if (*index > NVRAM_SIZE)
+ return 0;
+
+ i = *index;
+ if (i + count > NVRAM_SIZE)
+ count = NVRAM_SIZE - i;
+
+ memcpy(&nvram_image[i], buf, count);
+ *index = i + count;
+ return count;
+}
+
+static ssize_t core99_nvram_size(void)
+{
+ if (nvram_image == NULL)
+ return -ENODEV;
+ return NVRAM_SIZE;
+}
+
+#ifdef CONFIG_PPC32
+static volatile unsigned char *nvram_addr;
+static int nvram_mult;
static unsigned char direct_nvram_read_byte(int addr)
{
@@ -181,7 +228,7 @@
}
#endif /* CONFIG_ADB_PMU */
-
+#endif /* CONFIG_PPC32 */
static u8 chrp_checksum(struct chrp_header* hdr)
{
@@ -249,7 +296,7 @@
timeout = 0;
do {
if (++timeout > 1000000) {
- printk(KERN_ERR "nvram: Sharp/Miron flash erase timeout !\n");
+ printk(KERN_ERR "nvram: Sharp/Micron flash erase timeout !\n");
break;
}
out_8(base, SM_FLASH_CMD_READ_STATUS);
@@ -411,7 +458,7 @@
buffer[16] = 0;
do {
for (i=0;i<16;i++)
- buffer[i] = nvram_read_byte(offset+i);
+ buffer[i] = ppc_md.nvram_read_val(offset+i);
if (!strcmp(hdr->name, "common"))
nvram_partitions[pmac_nvram_OF] = offset + 0x10;
if (!strcmp(hdr->name, "APL,MacOS75")) {
@@ -467,65 +514,76 @@
#endif
}
-void __init pmac_nvram_init(void)
+static int __init core99_nvram_setup(struct device_node *dp)
+{
+ int i;
+ u32 gen_bank0, gen_bank1;
+
+ if (nvram_naddrs < 1) {
+ printk(KERN_ERR "nvram: no address\n");
+ return -EINVAL;
+ }
+ nvram_image = alloc_bootmem(NVRAM_SIZE);
+ if (nvram_image == NULL) {
+ printk(KERN_ERR "nvram: can't allocate ram image\n");
+ return -ENOMEM;
+ }
+ nvram_data = ioremap(dp->addrs[0].address, NVRAM_SIZE*2);
+ nvram_naddrs = 1; /* Make sure we get the correct case */
+
+ DBG("nvram: Checking bank 0...\n");
+
+ gen_bank0 = core99_check((u8 *)nvram_data);
+ gen_bank1 = core99_check((u8 *)nvram_data + NVRAM_SIZE);
+ core99_bank = (gen_bank0 < gen_bank1) ? 1 : 0;
+
+ DBG("nvram: gen0=%d, gen1=%d\n", gen_bank0, gen_bank1);
+ DBG("nvram: Active bank is: %d\n", core99_bank);
+
+ for (i=0; i<NVRAM_SIZE; i++)
+ nvram_image[i] = nvram_data[i + core99_bank*NVRAM_SIZE];
+
+ ppc_md.nvram_read_val = core99_nvram_read_byte;
+ ppc_md.nvram_write_val = core99_nvram_write_byte;
+ ppc_md.nvram_read = core99_nvram_read;
+ ppc_md.nvram_write = core99_nvram_write;
+ ppc_md.nvram_size = core99_nvram_size;
+ ppc_md.nvram_sync = core99_nvram_sync;
+ /*
+ * Maybe we could be smarter here though making an exclusive list
+ * of known flash chips is a bit nasty as older OF didn't provide us
+ * with a useful "compatible" entry. A solution would be to really
+ * identify the chip using flash id commands and base ourselves on
+ * a list of known chips IDs
+ */
+ if (device_is_compatible(dp, "amd-0137")) {
+ core99_erase_bank = amd_erase_bank;
+ core99_write_bank = amd_write_bank;
+ } else {
+ core99_erase_bank = sm_erase_bank;
+ core99_write_bank = sm_write_bank;
+ }
+ return 0;
+}
+
+int __init pmac_nvram_init(void)
{
struct device_node *dp;
+ int err = 0;
nvram_naddrs = 0;
dp = find_devices("nvram");
if (dp == NULL) {
printk(KERN_ERR "Can't find NVRAM device\n");
- return;
+ return -ENODEV;
}
nvram_naddrs = dp->n_addrs;
is_core_99 = device_is_compatible(dp, "nvram,flash");
- if (is_core_99) {
- int i;
- u32 gen_bank0, gen_bank1;
-
- if (nvram_naddrs < 1) {
- printk(KERN_ERR "nvram: no address\n");
- return;
- }
- nvram_image = alloc_bootmem(NVRAM_SIZE);
- if (nvram_image == NULL) {
- printk(KERN_ERR "nvram: can't allocate ram image\n");
- return;
- }
- nvram_data = ioremap(dp->addrs[0].address, NVRAM_SIZE*2);
- nvram_naddrs = 1; /* Make sure we get the correct case */
-
- DBG("nvram: Checking bank 0...\n");
-
- gen_bank0 = core99_check((u8 *)nvram_data);
- gen_bank1 = core99_check((u8 *)nvram_data + NVRAM_SIZE);
- core99_bank = (gen_bank0 < gen_bank1) ? 1 : 0;
-
- DBG("nvram: gen0=%d, gen1=%d\n", gen_bank0, gen_bank1);
- DBG("nvram: Active bank is: %d\n", core99_bank);
-
- for (i=0; i<NVRAM_SIZE; i++)
- nvram_image[i] = nvram_data[i + core99_bank*NVRAM_SIZE];
-
- ppc_md.nvram_read_val = core99_nvram_read_byte;
- ppc_md.nvram_write_val = core99_nvram_write_byte;
- ppc_md.nvram_sync = core99_nvram_sync;
- /*
- * Maybe we could be smarter here though making an exclusive list
- * of known flash chips is a bit nasty as older OF didn't provide us
- * with a useful "compatible" entry. A solution would be to really
- * identify the chip using flash id commands and base ourselves on
- * a list of known chips IDs
- */
- if (device_is_compatible(dp, "amd-0137")) {
- core99_erase_bank = amd_erase_bank;
- core99_write_bank = amd_write_bank;
- } else {
- core99_erase_bank = sm_erase_bank;
- core99_write_bank = sm_write_bank;
- }
- } else if (_machine == _MACH_chrp && nvram_naddrs == 1) {
+ if (is_core_99)
+ err = core99_nvram_setup(dp);
+#ifdef CONFIG_PPC32
+ else if (_machine == _MACH_chrp && nvram_naddrs == 1) {
nvram_data = ioremap(dp->addrs[0].address + isa_mem_base,
dp->addrs[0].size);
nvram_mult = 1;
@@ -547,11 +605,14 @@
ppc_md.nvram_read_val = pmu_nvram_read_byte;
ppc_md.nvram_write_val = pmu_nvram_write_byte;
#endif /* CONFIG_ADB_PMU */
- } else {
- printk(KERN_ERR "Don't know how to access NVRAM with %d addresses\n",
- nvram_naddrs);
+ }
+#endif
+ else {
+ printk(KERN_ERR "Incompatible type of NVRAM\n");
+ return -ENXIO;
}
lookup_partitions();
+ return err;
}
int pmac_get_partition(int partition)
@@ -561,9 +622,9 @@
u8 pmac_xpram_read(int xpaddr)
{
- int offset = nvram_partitions[pmac_nvram_XPRAM];
+ int offset = pmac_get_partition(pmac_nvram_XPRAM);
- if (offset < 0)
+ if (offset < 0 || xpaddr < 0 || xpaddr > 0x100)
return 0xff;
return ppc_md.nvram_read_val(xpaddr + offset);
@@ -571,9 +632,9 @@
void pmac_xpram_write(int xpaddr, u8 data)
{
- int offset = nvram_partitions[pmac_nvram_XPRAM];
+ int offset = pmac_get_partition(pmac_nvram_XPRAM);
- if (offset < 0)
+ if (offset < 0 || xpaddr < 0 || xpaddr > 0x100)
return;
ppc_md.nvram_write_val(xpaddr + offset, data);
diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c
index 34dfe1e..ebe22a2 100644
--- a/arch/powerpc/platforms/powermac/pci.c
+++ b/arch/powerpc/platforms/powermac/pci.c
@@ -37,14 +37,14 @@
#endif
static int add_bridge(struct device_node *dev);
-extern void pmac_check_ht_link(void);
/* XXX Could be per-controller, but I don't think we risk anything by
* assuming we won't have both UniNorth and Bandit */
static int has_uninorth;
-#ifdef CONFIG_POWER4
+#ifdef CONFIG_PPC64
static struct pci_controller *u3_agp;
-#endif /* CONFIG_POWER4 */
+static struct pci_controller *u3_ht;
+#endif /* CONFIG_PPC64 */
extern u8 pci_cache_line_size;
extern int pcibios_assign_bus_offset;
@@ -229,6 +229,7 @@
macrisc_write_config
};
+#ifdef CONFIG_PPC32
/*
* Verify that a specific (bus, dev_fn) exists on chaos
*/
@@ -282,7 +283,19 @@
chaos_write_config
};
-#ifdef CONFIG_POWER4
+static void __init setup_chaos(struct pci_controller *hose,
+ struct reg_property *addr)
+{
+ /* assume a `chaos' bridge */
+ hose->ops = &chaos_pci_ops;
+ hose->cfg_addr = ioremap(addr->address + 0x800000, 0x1000);
+ hose->cfg_data = ioremap(addr->address + 0xc00000, 0x1000);
+}
+#else
+#define setup_chaos(hose, addr)
+#endif /* CONFIG_PPC32 */
+
+#ifdef CONFIG_PPC64
/*
* These versions of U3 HyperTransport config space access ops do not
* implement self-view of the HT host yet
@@ -445,8 +458,9 @@
u3_ht_read_config,
u3_ht_write_config
};
-#endif /* CONFIG_POWER4 */
+#endif /* CONFIG_PPC64 */
+#ifdef CONFIG_PPC32
/*
* For a bandit bridge, turn on cache coherency if necessary.
* N.B. we could clean this up using the hose ops directly.
@@ -487,7 +501,6 @@
printk(KERN_INFO "Cache coherency enabled for bandit/PSX\n");
}
-
/*
* Tweak the PCI-PCI bridge chip on the blue & white G3s.
*/
@@ -539,7 +552,7 @@
struct pci_controller *hose;
u32 data, *prop;
u8 bus, devfn;
-
+
prop = (u32 *)get_property(nec, "vendor-id", NULL);
if (prop == NULL)
continue;
@@ -605,8 +618,27 @@
(void)in_le32(bp->cfg_data);
}
-static int __init
-setup_uninorth(struct pci_controller* hose, struct reg_property* addr)
+void __init setup_grackle(struct pci_controller *hose)
+{
+ setup_indirect_pci(hose, 0xfec00000, 0xfee00000);
+ if (machine_is_compatible("AAPL,PowerBook1998"))
+ grackle_set_loop_snoop(hose, 1);
+#if 0 /* Disabled for now, HW problems ??? */
+ grackle_set_stg(hose, 1);
+#endif
+}
+
+static void __init setup_bandit(struct pci_controller *hose,
+ struct reg_property *addr)
+{
+ hose->ops = ¯isc_pci_ops;
+ hose->cfg_addr = ioremap(addr->address + 0x800000, 0x1000);
+ hose->cfg_data = ioremap(addr->address + 0xc00000, 0x1000);
+ init_bandit(hose);
+}
+
+static int __init setup_uninorth(struct pci_controller *hose,
+ struct reg_property *addr)
{
pci_assign_all_buses = 1;
has_uninorth = 1;
@@ -616,31 +648,14 @@
/* We "know" that the bridge at f2000000 has the PCI slots. */
return addr->address == 0xf2000000;
}
+#endif
-static void __init
-setup_bandit(struct pci_controller* hose, struct reg_property* addr)
-{
- hose->ops = ¯isc_pci_ops;
- hose->cfg_addr = ioremap(addr->address + 0x800000, 0x1000);
- hose->cfg_data = ioremap(addr->address + 0xc00000, 0x1000);
- init_bandit(hose);
-}
-
-static void __init
-setup_chaos(struct pci_controller* hose, struct reg_property* addr)
-{
- /* assume a `chaos' bridge */
- hose->ops = &chaos_pci_ops;
- hose->cfg_addr = ioremap(addr->address + 0x800000, 0x1000);
- hose->cfg_data = ioremap(addr->address + 0xc00000, 0x1000);
-}
-
-#ifdef CONFIG_POWER4
+#ifdef CONFIG_PPC64
static void __init setup_u3_agp(struct pci_controller* hose)
{
/* On G5, we move AGP up to high bus number so we don't need
* to reassign bus numbers for HT. If we ever have P2P bridges
- * on AGP, we'll have to move pci_assign_all_buses to the
+ * on AGP, we'll have to move pci_assign_all_busses to the
* pci_controller structure so we enable it for AGP and not for
* HT childs.
* We hard code the address because of the different size of
@@ -679,8 +694,7 @@
* then read its configuration register (if any).
*/
hose->io_base_phys = 0xf4000000;
- hose->io_base_virt = ioremap(hose->io_base_phys, 0x00400000);
- isa_io_base = pci_io_base = (unsigned long) hose->io_base_virt;
+ hose->pci_io_size = 0x00400000;
hose->io_resource.name = np->full_name;
hose->io_resource.start = 0;
hose->io_resource.end = 0x003fffff;
@@ -693,6 +707,8 @@
hose->mem_resources[0].end = 0xefffffff;
hose->mem_resources[0].flags = IORESOURCE_MEM;
+ u3_ht = hose;
+
if (u3_agp == NULL) {
DBG("U3 has no AGP, using full resource range\n");
return;
@@ -730,7 +746,7 @@
printk(KERN_WARNING "Running out of resources for /ht host !\n");
hose->mem_resources[cur].end = res->start - 1;
continue;
- }
+ }
cur++;
DBG("U3/HT: hole, %d end at %08lx, %d start at %08lx\n",
cur-1, res->start - 1, cur, res->end + 1);
@@ -742,126 +758,17 @@
}
}
-#endif /* CONFIG_POWER4 */
-
-void __init
-setup_grackle(struct pci_controller *hose)
+/* XXX this needs to be converged between ppc32 and ppc64... */
+static struct pci_controller * __init pcibios_alloc_controller(void)
{
- setup_indirect_pci(hose, 0xfec00000, 0xfee00000);
- if (machine_is_compatible("AAPL,PowerBook1998"))
- grackle_set_loop_snoop(hose, 1);
-#if 0 /* Disabled for now, HW problems ??? */
- grackle_set_stg(hose, 1);
-#endif
+ struct pci_controller *hose;
+
+ hose = alloc_bootmem(sizeof(struct pci_controller));
+ if (hose)
+ pci_setup_pci_controller(hose);
+ return hose;
}
-
-static void __init pmac_process_bridge_OF_ranges(struct pci_controller *hose,
- struct device_node *dev, int primary)
-{
- static unsigned int static_lc_ranges[2024];
- unsigned int *dt_ranges, *lc_ranges, *ranges, *prev;
- unsigned int size;
- int rlen = 0, orig_rlen;
- int memno = 0;
- struct resource *res;
- int np, na = prom_n_addr_cells(dev);
-
- np = na + 5;
-
- /* First we try to merge ranges to fix a problem with some pmacs
- * that can have more than 3 ranges, fortunately using contiguous
- * addresses -- BenH
- */
- dt_ranges = (unsigned int *) get_property(dev, "ranges", &rlen);
- if (!dt_ranges)
- return;
- /* lc_ranges = alloc_bootmem(rlen);*/
- lc_ranges = static_lc_ranges;
- if (!lc_ranges)
- return; /* what can we do here ? */
- memcpy(lc_ranges, dt_ranges, rlen);
- orig_rlen = rlen;
-
- /* Let's work on a copy of the "ranges" property instead of damaging
- * the device-tree image in memory
- */
- ranges = lc_ranges;
- prev = NULL;
- while ((rlen -= np * sizeof(unsigned int)) >= 0) {
- if (prev) {
- if (prev[0] == ranges[0] && prev[1] == ranges[1] &&
- (prev[2] + prev[na+4]) == ranges[2] &&
- (prev[na+2] + prev[na+4]) == ranges[na+2]) {
- prev[na+4] += ranges[na+4];
- ranges[0] = 0;
- ranges += np;
- continue;
- }
- }
- prev = ranges;
- ranges += np;
- }
-
- /*
- * The ranges property is laid out as an array of elements,
- * each of which comprises:
- * cells 0 - 2: a PCI address
- * cells 3 or 3+4: a CPU physical address
- * (size depending on dev->n_addr_cells)
- * cells 4+5 or 5+6: the size of the range
- */
- ranges = lc_ranges;
- rlen = orig_rlen;
- while (ranges && (rlen -= np * sizeof(unsigned int)) >= 0) {
- res = NULL;
- size = ranges[na+4];
- switch (ranges[0] >> 24) {
- case 1: /* I/O space */
- if (ranges[2] != 0)
- break;
- hose->io_base_phys = ranges[na+2];
- /* limit I/O space to 16MB */
- if (size > 0x01000000)
- size = 0x01000000;
- hose->io_base_virt = ioremap(ranges[na+2], size);
- if (primary)
- isa_io_base = (unsigned long) hose->io_base_virt;
- res = &hose->io_resource;
- res->flags = IORESOURCE_IO;
- res->start = ranges[2];
- break;
- case 2: /* memory space */
- memno = 0;
- if (ranges[1] == 0 && ranges[2] == 0
- && ranges[na+4] <= (16 << 20)) {
- /* 1st 16MB, i.e. ISA memory area */
-#if 0
- if (primary)
- isa_mem_base = ranges[na+2];
#endif
- memno = 1;
- }
- while (memno < 3 && hose->mem_resources[memno].flags)
- ++memno;
- if (memno == 0)
- hose->pci_mem_offset = ranges[na+2] - ranges[2];
- if (memno < 3) {
- res = &hose->mem_resources[memno];
- res->flags = IORESOURCE_MEM;
- res->start = ranges[na+2];
- }
- break;
- }
- if (res != NULL) {
- res->name = dev->full_name;
- res->end = res->start + size - 1;
- res->parent = NULL;
- res->sibling = NULL;
- res->child = NULL;
- }
- ranges += np;
- }
-}
/*
* We assume that if we have a G3 powermac, we have one bridge called
@@ -872,70 +779,78 @@
{
int len;
struct pci_controller *hose;
+#ifdef CONFIG_PPC32
struct reg_property *addr;
- char* disp_name;
+#endif
+ char *disp_name;
int *bus_range;
int primary = 1;
DBG("Adding PCI host bridge %s\n", dev->full_name);
- addr = (struct reg_property *) get_property(dev, "reg", &len);
- if (addr == NULL || len < sizeof(*addr)) {
- printk(KERN_WARNING "Can't use %s: no address\n",
- dev->full_name);
- return -ENODEV;
- }
- bus_range = (int *) get_property(dev, "bus-range", &len);
- if (bus_range == NULL || len < 2 * sizeof(int)) {
- printk(KERN_WARNING "Can't get bus-range for %s, assume bus 0\n",
- dev->full_name);
- }
+#ifdef CONFIG_PPC32
+ /* XXX fix this */
+ addr = (struct reg_property *) get_property(dev, "reg", &len);
+ if (addr == NULL || len < sizeof(*addr)) {
+ printk(KERN_WARNING "Can't use %s: no address\n",
+ dev->full_name);
+ return -ENODEV;
+ }
+#endif
+ bus_range = (int *) get_property(dev, "bus-range", &len);
+ if (bus_range == NULL || len < 2 * sizeof(int)) {
+ printk(KERN_WARNING "Can't get bus-range for %s, assume bus 0\n",
+ dev->full_name);
+ }
- hose = pcibios_alloc_controller();
- if (!hose)
- return -ENOMEM;
- hose->arch_data = dev;
- hose->first_busno = bus_range ? bus_range[0] : 0;
- hose->last_busno = bus_range ? bus_range[1] : 0xff;
+ hose = pcibios_alloc_controller();
+ if (!hose)
+ return -ENOMEM;
+ hose->arch_data = dev;
+ hose->first_busno = bus_range ? bus_range[0] : 0;
+ hose->last_busno = bus_range ? bus_range[1] : 0xff;
disp_name = NULL;
#ifdef CONFIG_POWER4
- if (device_is_compatible(dev, "u3-agp")) {
- setup_u3_agp(hose, addr);
- disp_name = "U3-AGP";
- primary = 0;
- } else if (device_is_compatible(dev, "u3-ht")) {
- setup_u3_ht(hose, addr);
- disp_name = "U3-HT";
- primary = 1;
- } else
-#endif /* CONFIG_POWER4 */
+ if (device_is_compatible(dev, "u3-agp")) {
+ setup_u3_agp(hose);
+ disp_name = "U3-AGP";
+ primary = 0;
+ } else if (device_is_compatible(dev, "u3-ht")) {
+ setup_u3_ht(hose);
+ disp_name = "U3-HT";
+ primary = 1;
+ }
+ printk(KERN_INFO "Found %s PCI host bridge. Firmware bus number: %d->%d\n",
+ disp_name, hose->first_busno, hose->last_busno);
+#else
if (device_is_compatible(dev, "uni-north")) {
- primary = setup_uninorth(hose, addr);
- disp_name = "UniNorth";
+ primary = setup_uninorth(hose, addr);
+ disp_name = "UniNorth";
} else if (strcmp(dev->name, "pci") == 0) {
- /* XXX assume this is a mpc106 (grackle) */
- setup_grackle(hose);
- disp_name = "Grackle (MPC106)";
- } else if (strcmp(dev->name, "bandit") == 0) {
- setup_bandit(hose, addr);
- disp_name = "Bandit";
- } else if (strcmp(dev->name, "chaos") == 0) {
- setup_chaos(hose, addr);
- disp_name = "Chaos";
- primary = 0;
- }
- printk(KERN_INFO "Found %s PCI host bridge at 0x%08lx. Firmware bus number: %d->%d\n",
- disp_name, addr->address, hose->first_busno, hose->last_busno);
- DBG(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
- hose, hose->cfg_addr, hose->cfg_data);
+ /* XXX assume this is a mpc106 (grackle) */
+ setup_grackle(hose);
+ disp_name = "Grackle (MPC106)";
+ } else if (strcmp(dev->name, "bandit") == 0) {
+ setup_bandit(hose, addr);
+ disp_name = "Bandit";
+ } else if (strcmp(dev->name, "chaos") == 0) {
+ setup_chaos(hose, addr);
+ disp_name = "Chaos";
+ primary = 0;
+ }
+ printk(KERN_INFO "Found %s PCI host bridge at 0x%08lx. Firmware bus number: %d->%d\n",
+ disp_name, addr->address, hose->first_busno, hose->last_busno);
+#endif
+ DBG(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
+ hose, hose->cfg_addr, hose->cfg_data);
- /* Interpret the "ranges" property */
- /* This also maps the I/O region and sets isa_io/mem_base */
- pci_process_bridge_OF_ranges(hose, dev, primary);
+ /* Interpret the "ranges" property */
+ /* This also maps the I/O region and sets isa_io/mem_base */
+ pci_process_bridge_OF_ranges(hose, dev, primary);
- /* Fixup "bus-range" OF property */
- fixup_bus_range(dev);
+ /* Fixup "bus-range" OF property */
+ fixup_bus_range(dev);
return 0;
}
@@ -968,14 +883,28 @@
pcibios_fixup_OF_interrupts();
}
-void __init pmac_find_bridges(void)
+#ifdef CONFIG_PPC64
+static void __init pmac_fixup_phb_resources(void)
+{
+ struct pci_controller *hose, *tmp;
+
+ list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
+ printk(KERN_INFO "PCI Host %d, io start: %lx; io end: %lx\n",
+ hose->global_number,
+ hose->io_resource.start, hose->io_resource.end);
+ }
+}
+#endif
+
+void __init pmac_pci_init(void)
{
struct device_node *np, *root;
struct device_node *ht = NULL;
root = of_find_node_by_path("/");
if (root == NULL) {
- printk(KERN_CRIT "pmac_find_bridges: can't find root of device tree\n");
+ printk(KERN_CRIT "pmac_pci_init: can't find root "
+ "of device tree\n");
return;
}
for (np = NULL; (np = of_get_next_child(root, np)) != NULL;) {
@@ -994,22 +923,66 @@
}
of_node_put(root);
+#ifdef CONFIG_PPC64
/* Probe HT last as it relies on the agp resources to be already
* setup
*/
if (ht && add_bridge(ht) != 0)
of_node_put(ht);
+ /*
+ * We need to call pci_setup_phb_io for the HT bridge first
+ * so it gets the I/O port numbers starting at 0, and we
+ * need to call it for the AGP bridge after that so it gets
+ * small positive I/O port numbers.
+ */
+ if (u3_ht)
+ pci_setup_phb_io(u3_ht, 1);
+ if (u3_agp)
+ pci_setup_phb_io(u3_agp, 0);
+
+ /*
+ * On ppc64, fixup the IO resources on our host bridges as
+ * the common code does it only for children of the host bridges
+ */
+ pmac_fixup_phb_resources();
+
+ /* Setup the linkage between OF nodes and PHBs */
+ pci_devs_phb_init();
+
+ /* Fixup the PCI<->OF mapping for U3 AGP due to bus renumbering. We
+ * assume there is no P2P bridge on the AGP bus, which should be a
+ * safe assumptions hopefully.
+ */
+ if (u3_agp) {
+ struct device_node *np = u3_agp->arch_data;
+ PCI_DN(np)->busno = 0xf0;
+ for (np = np->child; np; np = np->sibling)
+ PCI_DN(np)->busno = 0xf0;
+ }
+
+ /* map in PCI I/O space */
+ phbs_remap_io();
+
+ /* pmac_check_ht_link(); */
+
+ /* Tell pci.c to not use the common resource allocation mechanism */
+ pci_probe_only = 1;
+
+ /* Allow all IO */
+ io_page_mask = -1;
+
+#else /* CONFIG_PPC64 */
init_p2pbridge();
fixup_nec_usb2();
-
+
/* We are still having some issues with the Xserve G4, enabling
* some offset between bus number and domains for now when we
* assign all busses should help for now
*/
if (pci_assign_all_buses)
pcibios_assign_bus_offset = 0x10;
-
+#endif
}
int
@@ -1037,7 +1010,7 @@
uninorth_child = node->parent &&
device_is_compatible(node->parent, "uni-north");
-
+
/* Firewire & GMAC were disabled after PCI probe, the driver is
* claiming them, we must re-enable them now.
*/
@@ -1057,7 +1030,7 @@
if (updatecfg) {
u16 cmd;
-
+
/*
* Make sure PCI is correctly configured
*
@@ -1069,10 +1042,12 @@
* register the device.
*/
pci_read_config_word(dev, PCI_COMMAND, &cmd);
- cmd |= PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE;
- pci_write_config_word(dev, PCI_COMMAND, cmd);
- pci_write_config_byte(dev, PCI_LATENCY_TIMER, 16);
- pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, pci_cache_line_size);
+ cmd |= PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
+ | PCI_COMMAND_INVALIDATE;
+ pci_write_config_word(dev, PCI_COMMAND, cmd);
+ pci_write_config_byte(dev, PCI_LATENCY_TIMER, 16);
+ pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE,
+ L1_CACHE_BYTES >> 2);
}
return 0;
@@ -1081,8 +1056,7 @@
/* We power down some devices after they have been probed. They'll
* be powered back on later on
*/
-void __init
-pmac_pcibios_after_init(void)
+void __init pmac_pcibios_after_init(void)
{
struct device_node* nd;
@@ -1125,84 +1099,6 @@
}
}
-#ifdef CONFIG_PPC64
-static void __init pmac_fixup_phb_resources(void)
-{
- struct pci_controller *hose, *tmp;
-
- list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
- unsigned long offset = (unsigned long)hose->io_base_virt - pci_io_base;
- hose->io_resource.start += offset;
- hose->io_resource.end += offset;
- printk(KERN_INFO "PCI Host %d, io start: %lx; io end: %lx\n",
- hose->global_number,
- hose->io_resource.start, hose->io_resource.end);
- }
-}
-
-void __init pmac_pci_init(void)
-{
- struct device_node *np, *root;
- struct device_node *ht = NULL;
-
- /* Probe root PCI hosts, that is on U3 the AGP host and the
- * HyperTransport host. That one is actually "kept" around
- * and actually added last as it's resource management relies
- * on the AGP resources to have been setup first
- */
- root = of_find_node_by_path("/");
- if (root == NULL) {
- printk(KERN_CRIT "pmac_find_bridges: can't find root of device tree\n");
- return;
- }
- for (np = NULL; (np = of_get_next_child(root, np)) != NULL;) {
- if (np->name == NULL)
- continue;
- if (strcmp(np->name, "pci") == 0) {
- if (add_bridge(np) == 0)
- of_node_get(np);
- }
- if (strcmp(np->name, "ht") == 0) {
- of_node_get(np);
- ht = np;
- }
- }
- of_node_put(root);
-
- /* Now setup the HyperTransport host if we found any
- */
- if (ht && add_bridge(ht) != 0)
- of_node_put(ht);
-
- /* Fixup the IO resources on our host bridges as the common code
- * does it only for childs of the host bridges
- */
- pmac_fixup_phb_resources();
-
- /* Setup the linkage between OF nodes and PHBs */
- pci_devs_phb_init();
-
- /* Fixup the PCI<->OF mapping for U3 AGP due to bus renumbering. We
- * assume there is no P2P bridge on the AGP bus, which should be a
- * safe assumptions hopefully.
- */
- if (u3_agp) {
- struct device_node *np = u3_agp->arch_data;
- PCI_DN(np)->busno = 0xf0;
- for (np = np->child; np; np = np->sibling)
- PCI_DN(np)->busno = 0xf0;
- }
-
- pmac_check_ht_link();
-
- /* Tell pci.c to not use the common resource allocation mecanism */
- pci_probe_only = 1;
-
- /* Allow all IO */
- io_page_mask = -1;
-}
-#endif
-
#ifdef CONFIG_PPC32
void pmac_pci_fixup_cardbus(struct pci_dev* dev)
{
@@ -1217,7 +1113,7 @@
if (dev->device == PCI_DEVICE_ID_TI_1130 ||
dev->device == PCI_DEVICE_ID_TI_1131) {
u8 val;
- /* Enable PCI interrupt */
+ /* Enable PCI interrupt */
if (pci_read_config_byte(dev, 0x91, &val) == 0)
pci_write_config_byte(dev, 0x91, val | 0x30);
/* Disable ISA interrupt mode */
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index 58017d1..0eca17d 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -430,7 +430,6 @@
printk(KERN_INFO "PowerMac using OpenPIC irq controller at 0x%08x\n",
(unsigned int)irqctrler->addrs[0].address);
- ppc_md.get_irq = mpic_get_irq;
pmac_call_feature(PMAC_FTR_ENABLE_MPIC, irqctrler, 0, 0);
prom_get_irq_senses(senses, 0, 128);
@@ -483,6 +482,7 @@
* a Grand Central nor an OHare, then it's an Heathrow
* (or Paddington).
*/
+ ppc_md.get_irq = pmac_get_irq;
if (find_devices("gc"))
level_mask[0] = GC_LEVEL_MASK;
else if (find_devices("ohare")) {
diff --git a/arch/powerpc/platforms/powermac/pmac.h b/arch/powerpc/platforms/powermac/pmac.h
index 0a9ba70..2ad25e1 100644
--- a/arch/powerpc/platforms/powermac/pmac.h
+++ b/arch/powerpc/platforms/powermac/pmac.h
@@ -19,7 +19,7 @@
extern void pmac_read_rtc_time(void);
extern void pmac_calibrate_decr(void);
extern void pmac_pcibios_fixup(void);
-extern void pmac_find_bridges(void);
+extern void pmac_pci_init(void);
extern unsigned long pmac_ide_get_base(int index);
extern void pmac_ide_init_hwif_ports(hw_regs_t *hw,
unsigned long data_port, unsigned long ctrl_port, int *irq);
@@ -41,7 +41,7 @@
extern void pmac_ide_init_hwif_ports(hw_regs_t *hw,
unsigned long data_port, unsigned long ctrl_port, int *irq);
-extern void pmac_nvram_init(void);
+extern int pmac_nvram_init(void);
extern struct hw_interrupt_type pmac_pic;
diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 0bad53f..da0cb16 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -1,11 +1,11 @@
/*
- * arch/ppc/platforms/setup.c
+ * Powermac setup and early boot code plus other random bits.
*
* PowerPC version
* Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
*
* Adapted for Power Macintosh by Paul Mackerras
- * Copyright (C) 1996 Paul Mackerras (paulus@cs.anu.edu.au)
+ * Copyright (C) 1996 Paul Mackerras (paulus@samba.org)
*
* Derived from "arch/alpha/kernel/setup.c"
* Copyright (C) 1995 Linus Torvalds
@@ -65,13 +65,16 @@
#include <asm/mediabay.h>
#include <asm/machdep.h>
#include <asm/dma.h>
-#include <asm/bootx.h>
#include <asm/cputable.h>
#include <asm/btext.h>
#include <asm/pmac_feature.h>
#include <asm/time.h>
#include <asm/of_device.h>
#include <asm/mmu_context.h>
+#include <asm/iommu.h>
+#include <asm/smu.h>
+#include <asm/pmc.h>
+#include <asm/mpic.h>
#include "pmac.h"
@@ -88,16 +91,24 @@
static int current_root_goodness = -1;
extern int pmac_newworld;
+extern struct machdep_calls pmac_md;
#define DEFAULT_ROOT_DEVICE Root_SDA1 /* sda1 - slightly silly choice */
-extern void zs_kgdb_hook(int tty_num);
-static void ohare_init(void);
-#ifdef CONFIG_BOOTX_TEXT
-static void pmac_progress(char *s, unsigned short hex);
+#ifdef CONFIG_PPC64
+#include <asm/udbg.h>
+int sccdbg;
#endif
+extern void zs_kgdb_hook(int tty_num);
+
sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN;
+EXPORT_SYMBOL(sys_ctrler);
+
+#ifdef CONFIG_PMAC_SMU
+unsigned long smu_cmdbuf_abs;
+EXPORT_SYMBOL(smu_cmdbuf_abs);
+#endif
#ifdef CONFIG_SMP
extern struct smp_ops_t psurge_smp_ops;
@@ -191,44 +202,69 @@
return;
}
#endif /* CONFIG_CPU_FREQ_PMAC */
+#ifdef CONFIG_PPC32
of_show_percpuinfo(m, i);
+#endif
}
+#ifndef CONFIG_ADB_CUDA
+int find_via_cuda(void)
+{
+ if (!find_devices("via-cuda"))
+ return 0;
+ printk("WARNING ! Your machine is CUDA-based but your kernel\n");
+ printk(" wasn't compiled with CONFIG_ADB_CUDA option !\n");
+ return 0;
+}
+#endif
+
+#ifndef CONFIG_ADB_PMU
+int find_via_pmu(void)
+{
+ if (!find_devices("via-pmu"))
+ return 0;
+ printk("WARNING ! Your machine is PMU-based but your kernel\n");
+ printk(" wasn't compiled with CONFIG_ADB_PMU option !\n");
+ return;
+}
+#endif
+
+#ifndef CONFIG_PMAC_SMU
+int smu_init(void)
+{
+ /* should check and warn if SMU is present */
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_PPC32
static volatile u32 *sysctrl_regs;
-void __init
-pmac_setup_arch(void)
+static void __init ohare_init(void)
{
- struct device_node *cpu;
- int *fp;
- unsigned long pvr;
-
- pvr = PVR_VER(mfspr(SPRN_PVR));
-
- /* Set loops_per_jiffy to a half-way reasonable value,
- for use until calibrate_delay gets called. */
- cpu = find_type_devices("cpu");
- if (cpu != 0) {
- fp = (int *) get_property(cpu, "clock-frequency", NULL);
- if (fp != 0) {
- if (pvr == 4 || pvr >= 8)
- /* 604, G3, G4 etc. */
- loops_per_jiffy = *fp / HZ;
- else
- /* 601, 603, etc. */
- loops_per_jiffy = *fp / (2*HZ);
- } else
- loops_per_jiffy = 50000000 / HZ;
- }
-
/* this area has the CPU identification register
and some registers used by smp boards */
sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000);
- ohare_init();
- /* Lookup PCI hosts */
- pmac_find_bridges();
+ /*
+ * Turn on the L2 cache.
+ * We assume that we have a PSX memory controller iff
+ * we have an ohare I/O controller.
+ */
+ if (find_devices("ohare") != NULL) {
+ if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) {
+ if (sysctrl_regs[4] & 0x10)
+ sysctrl_regs[4] |= 0x04000020;
+ else
+ sysctrl_regs[4] |= 0x04000000;
+ if(has_l2cache)
+ printk(KERN_INFO "Level 2 cache enabled\n");
+ }
+ }
+}
+static void __init l2cr_init(void)
+{
/* Checks "l2cr-value" property in the registry */
if (cpu_has_feature(CPU_FTR_L2CR)) {
struct device_node *np = find_devices("cpus");
@@ -247,68 +283,90 @@
}
if (ppc_override_l2cr)
- printk(KERN_INFO "L2CR overriden (0x%x), backside cache is %s\n",
- ppc_override_l2cr_value, (ppc_override_l2cr_value & 0x80000000)
+ printk(KERN_INFO "L2CR overridden (0x%x), "
+ "backside cache is %s\n",
+ ppc_override_l2cr_value,
+ (ppc_override_l2cr_value & 0x80000000)
? "enabled" : "disabled");
+}
+#endif
+
+void __init pmac_setup_arch(void)
+{
+ struct device_node *cpu;
+ int *fp;
+ unsigned long pvr;
+
+ pvr = PVR_VER(mfspr(SPRN_PVR));
+
+ /* Set loops_per_jiffy to a half-way reasonable value,
+ for use until calibrate_delay gets called. */
+ loops_per_jiffy = 50000000 / HZ;
+ cpu = of_find_node_by_type(NULL, "cpu");
+ if (cpu != NULL) {
+ fp = (int *) get_property(cpu, "clock-frequency", NULL);
+ if (fp != NULL) {
+ if (pvr >= 0x30 && pvr < 0x80)
+ /* PPC970 etc. */
+ loops_per_jiffy = *fp / (3 * HZ);
+ else if (pvr == 4 || pvr >= 8)
+ /* 604, G3, G4 etc. */
+ loops_per_jiffy = *fp / HZ;
+ else
+ /* 601, 603, etc. */
+ loops_per_jiffy = *fp / (2 * HZ);
+ }
+ of_node_put(cpu);
+ }
+
+ /* Lookup PCI hosts */
+ pmac_pci_init();
+
+#ifdef CONFIG_PPC32
+ ohare_init();
+ l2cr_init();
+#endif /* CONFIG_PPC32 */
+
+#ifdef CONFIG_PPC64
+ /* Probe motherboard chipset */
+ /* this is done earlier in setup_arch for 32-bit */
+ pmac_feature_init();
+
+ /* We can NAP */
+ powersave_nap = 1;
+ printk(KERN_INFO "Using native/NAP idle loop\n");
+#endif
#ifdef CONFIG_KGDB
zs_kgdb_hook(0);
#endif
-#ifdef CONFIG_ADB_CUDA
find_via_cuda();
-#else
- if (find_devices("via-cuda")) {
- printk("WARNING ! Your machine is Cuda based but your kernel\n");
- printk(" wasn't compiled with CONFIG_ADB_CUDA option !\n");
- }
-#endif
-#ifdef CONFIG_ADB_PMU
find_via_pmu();
-#else
- if (find_devices("via-pmu")) {
- printk("WARNING ! Your machine is PMU based but your kernel\n");
- printk(" wasn't compiled with CONFIG_ADB_PMU option !\n");
- }
-#endif
+ smu_init();
+
#ifdef CONFIG_NVRAM
pmac_nvram_init();
#endif
+
+#ifdef CONFIG_PPC32
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start)
ROOT_DEV = Root_RAM0;
else
#endif
ROOT_DEV = DEFAULT_ROOT_DEVICE;
+#endif
#ifdef CONFIG_SMP
/* Check for Core99 */
if (find_devices("uni-n") || find_devices("u3"))
smp_ops = &core99_smp_ops;
+#ifdef CONFIG_PPC32
else
smp_ops = &psurge_smp_ops;
+#endif
#endif /* CONFIG_SMP */
-
- pci_create_OF_bus_map();
-}
-
-static void __init ohare_init(void)
-{
- /*
- * Turn on the L2 cache.
- * We assume that we have a PSX memory controller iff
- * we have an ohare I/O controller.
- */
- if (find_devices("ohare") != NULL) {
- if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) {
- if (sysctrl_regs[4] & 0x10)
- sysctrl_regs[4] |= 0x04000020;
- else
- sysctrl_regs[4] |= 0x04000000;
- if(has_l2cache)
- printk(KERN_INFO "Level 2 cache enabled\n");
- }
- }
}
char *bootpath;
@@ -319,8 +377,7 @@
extern dev_t boot_dev;
#ifdef CONFIG_SCSI
-void __init
-note_scsi_host(struct device_node *node, void *host)
+void __init note_scsi_host(struct device_node *node, void *host)
{
int l;
char *p;
@@ -351,8 +408,7 @@
#endif
#if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
-static dev_t __init
-find_ide_boot(void)
+static dev_t __init find_ide_boot(void)
{
char *p;
int n;
@@ -369,15 +425,13 @@
}
#endif /* CONFIG_BLK_DEV_IDE && CONFIG_BLK_DEV_IDE_PMAC */
-static void __init
-find_boot_device(void)
+static void __init find_boot_device(void)
{
#if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
boot_dev = find_ide_boot();
#endif
}
-static int initializing = 1;
/* TODO: Merge the suspend-to-ram with the common code !!!
* currently, this is a stub implementation for suspend-to-disk
* only
@@ -428,6 +482,8 @@
#endif /* CONFIG_SOFTWARE_SUSPEND */
+static int initializing = 1;
+
static int pmac_late_init(void)
{
initializing = 0;
@@ -440,8 +496,7 @@
late_initcall(pmac_late_init);
/* can't be __init - can be called whenever a disk is first accessed */
-void
-note_bootable_part(dev_t dev, int part, int goodness)
+void note_bootable_part(dev_t dev, int part, int goodness)
{
static int found_boot = 0;
char *p;
@@ -466,52 +521,68 @@
}
}
-static void
-pmac_restart(char *cmd)
+#ifdef CONFIG_ADB_CUDA
+static void cuda_restart(void)
{
-#ifdef CONFIG_ADB_CUDA
struct adb_request req;
-#endif /* CONFIG_ADB_CUDA */
+ cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM);
+ for (;;)
+ cuda_poll();
+}
+
+static void cuda_shutdown(void)
+{
+ struct adb_request req;
+
+ cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN);
+ for (;;)
+ cuda_poll();
+}
+
+#else
+#define cuda_restart()
+#define cuda_shutdown()
+#endif
+
+#ifndef CONFIG_ADB_PMU
+#define pmu_restart()
+#define pmu_shutdown()
+#endif
+
+#ifndef CONFIG_PMAC_SMU
+#define smu_restart()
+#define smu_shutdown()
+#endif
+
+static void pmac_restart(char *cmd)
+{
switch (sys_ctrler) {
-#ifdef CONFIG_ADB_CUDA
case SYS_CTRLER_CUDA:
- cuda_request(&req, NULL, 2, CUDA_PACKET,
- CUDA_RESET_SYSTEM);
- for (;;)
- cuda_poll();
+ cuda_restart();
break;
-#endif /* CONFIG_ADB_CUDA */
-#ifdef CONFIG_ADB_PMU
case SYS_CTRLER_PMU:
pmu_restart();
break;
-#endif /* CONFIG_ADB_PMU */
+ case SYS_CTRLER_SMU:
+ smu_restart();
+ break;
default: ;
}
}
-static void
-pmac_power_off(void)
+static void pmac_power_off(void)
{
-#ifdef CONFIG_ADB_CUDA
- struct adb_request req;
-#endif /* CONFIG_ADB_CUDA */
-
switch (sys_ctrler) {
-#ifdef CONFIG_ADB_CUDA
case SYS_CTRLER_CUDA:
- cuda_request(&req, NULL, 2, CUDA_PACKET,
- CUDA_POWERDOWN);
- for (;;)
- cuda_poll();
+ cuda_shutdown();
break;
-#endif /* CONFIG_ADB_CUDA */
-#ifdef CONFIG_ADB_PMU
case SYS_CTRLER_PMU:
pmu_shutdown();
break;
-#endif /* CONFIG_ADB_PMU */
+ case SYS_CTRLER_SMU:
+ smu_shutdown();
+ break;
default: ;
}
}
@@ -522,37 +593,17 @@
pmac_power_off();
}
+#ifdef CONFIG_PPC32
void __init pmac_init(void)
{
- /* isa_io_base gets set in pmac_find_bridges */
+ /* isa_io_base gets set in pmac_pci_init */
isa_mem_base = PMAC_ISA_MEM_BASE;
pci_dram_offset = PMAC_PCI_DRAM_OFFSET;
ISA_DMA_THRESHOLD = ~0L;
DMA_MODE_READ = 1;
DMA_MODE_WRITE = 2;
- ppc_md.setup_arch = pmac_setup_arch;
- ppc_md.show_cpuinfo = pmac_show_cpuinfo;
- ppc_md.show_percpuinfo = pmac_show_percpuinfo;
- ppc_md.init_IRQ = pmac_pic_init;
- ppc_md.get_irq = pmac_get_irq; /* Changed later on ... */
-
- ppc_md.pcibios_fixup = pmac_pcibios_fixup;
- ppc_md.pcibios_enable_device_hook = pmac_pci_enable_device_hook;
- ppc_md.pcibios_after_init = pmac_pcibios_after_init;
- ppc_md.phys_mem_access_prot = pci_phys_mem_access_prot;
-
- ppc_md.restart = pmac_restart;
- ppc_md.power_off = pmac_power_off;
- ppc_md.halt = pmac_halt;
-
- ppc_md.time_init = pmac_time_init;
- ppc_md.set_rtc_time = pmac_set_rtc_time;
- ppc_md.get_rtc_time = pmac_get_rtc_time;
- ppc_md.get_boot_time = pmac_get_boot_time;
- ppc_md.calibrate_decr = pmac_calibrate_decr;
-
- ppc_md.feature_call = pmac_do_feature_call;
+ ppc_md = pmac_md;
#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
#ifdef CONFIG_BLK_DEV_IDE_PMAC
@@ -561,27 +612,62 @@
#endif /* CONFIG_BLK_DEV_IDE_PMAC */
#endif /* defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) */
-#ifdef CONFIG_BOOTX_TEXT
- ppc_md.progress = pmac_progress;
-#endif /* CONFIG_BOOTX_TEXT */
-
if (ppc_md.progress) ppc_md.progress("pmac_init(): exit", 0);
}
+#endif
-#ifdef CONFIG_BOOTX_TEXT
-static void __init
-pmac_progress(char *s, unsigned short hex)
+/*
+ * Early initialization.
+ */
+static void __init pmac_init_early(void)
{
+#ifdef CONFIG_PPC64
+ /* Initialize hash table, from now on, we can take hash faults
+ * and call ioremap
+ */
+ hpte_init_native();
+
+ /* Init SCC */
+ if (strstr(cmd_line, "sccdbg")) {
+ sccdbg = 1;
+ udbg_init_scc(NULL);
+ }
+
+ /* Setup interrupt mapping options */
+ ppc64_interrupt_controller = IC_OPEN_PIC;
+
+ iommu_init_early_u3();
+#endif
+}
+
+static void __init pmac_progress(char *s, unsigned short hex)
+{
+#ifdef CONFIG_PPC64
+ if (sccdbg) {
+ udbg_puts(s);
+ udbg_puts("\n");
+ return;
+ }
+#endif
+#ifdef CONFIG_BOOTX_TEXT
if (boot_text_mapped) {
btext_drawstring(s);
btext_drawchar('\n');
}
-}
#endif /* CONFIG_BOOTX_TEXT */
+}
-static int __init
-pmac_declare_of_platform_devices(void)
+/*
+ * pmac has no legacy IO, anything calling this function has to
+ * fail or bad things will happen
+ */
+static int pmac_check_legacy_ioport(unsigned int baseport)
+{
+ return -ENODEV;
+}
+
+static int __init pmac_declare_of_platform_devices(void)
{
struct device_node *np;
@@ -594,6 +680,13 @@
break;
}
}
+ np = find_devices("valkyrie");
+ if (np)
+ of_platform_device_create(np, "valkyrie", NULL);
+ np = find_devices("platinum");
+ if (np)
+ of_platform_device_create(np, "platinum", NULL);
+
np = find_devices("u3");
if (np) {
for (np = np->child; np != NULL; np = np->sibling)
@@ -603,15 +696,92 @@
break;
}
}
-
- np = find_devices("valkyrie");
- if (np)
- of_platform_device_create(np, "valkyrie", NULL);
- np = find_devices("platinum");
- if (np)
- of_platform_device_create(np, "platinum", NULL);
+ np = of_find_node_by_type(NULL, "smu");
+ if (np) {
+ of_platform_device_create(np, "smu", NULL);
+ of_node_put(np);
+ }
return 0;
}
device_initcall(pmac_declare_of_platform_devices);
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init pmac_probe(int platform)
+{
+#ifdef CONFIG_PPC64
+ if (platform != PLATFORM_POWERMAC)
+ return 0;
+
+ /*
+ * On U3, the DART (iommu) must be allocated now since it
+ * has an impact on htab_initialize (due to the large page it
+ * occupies having to be broken up so the DART itself is not
+ * part of the cacheable linar mapping
+ */
+ alloc_u3_dart_table();
+#endif
+
+#ifdef CONFIG_PMAC_SMU
+ /*
+ * SMU based G5s need some memory below 2Gb, at least the current
+ * driver needs that. We have to allocate it now. We allocate 4k
+ * (1 small page) for now.
+ */
+ smu_cmdbuf_abs = lmb_alloc_base(4096, 4096, 0x80000000UL);
+#endif /* CONFIG_PMAC_SMU */
+
+ return 1;
+}
+
+#ifdef CONFIG_PPC64
+static int pmac_probe_mode(struct pci_bus *bus)
+{
+ struct device_node *node = bus->sysdata;
+
+ /* We need to use normal PCI probing for the AGP bus,
+ since the device for the AGP bridge isn't in the tree. */
+ if (bus->self == NULL && device_is_compatible(node, "u3-agp"))
+ return PCI_PROBE_NORMAL;
+
+ return PCI_PROBE_DEVTREE;
+}
+#endif
+
+struct machdep_calls __initdata pmac_md = {
+#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64)
+ .cpu_die = generic_mach_cpu_die,
+#endif
+ .probe = pmac_probe,
+ .setup_arch = pmac_setup_arch,
+ .init_early = pmac_init_early,
+ .show_cpuinfo = pmac_show_cpuinfo,
+ .show_percpuinfo = pmac_show_percpuinfo,
+ .init_IRQ = pmac_pic_init,
+ .get_irq = mpic_get_irq, /* changed later */
+ .pcibios_fixup = pmac_pcibios_fixup,
+ .restart = pmac_restart,
+ .power_off = pmac_power_off,
+ .halt = pmac_halt,
+ .time_init = pmac_time_init,
+ .get_boot_time = pmac_get_boot_time,
+ .set_rtc_time = pmac_set_rtc_time,
+ .get_rtc_time = pmac_get_rtc_time,
+ .calibrate_decr = pmac_calibrate_decr,
+ .feature_call = pmac_do_feature_call,
+ .check_legacy_ioport = pmac_check_legacy_ioport,
+ .progress = pmac_progress,
+#ifdef CONFIG_PPC64
+ .pci_probe_mode = pmac_probe_mode,
+ .idle_loop = native_idle,
+ .enable_pmcs = power4_enable_pmcs,
+#endif
+#ifdef CONFIG_PPC32
+ .pcibios_enable_device_hook = pmac_pci_enable_device_hook,
+ .pcibios_after_init = pmac_pcibios_after_init,
+ .phys_mem_access_prot = pci_phys_mem_access_prot,
+#endif
+};
diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
index ccaa053..e1f9443 100644
--- a/arch/powerpc/platforms/powermac/smp.c
+++ b/arch/powerpc/platforms/powermac/smp.c
@@ -44,20 +44,33 @@
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/smp.h>
-#include <asm/residual.h>
#include <asm/machdep.h>
#include <asm/pmac_feature.h>
#include <asm/time.h>
#include <asm/mpic.h>
#include <asm/cacheflush.h>
#include <asm/keylargo.h>
+#include <asm/pmac_low_i2c.h>
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(fmt...) udbg_printf(fmt)
+#else
+#define DBG(fmt...)
+#endif
+
+extern void __secondary_start_pmac_0(void);
+
+#ifdef CONFIG_PPC32
+
+/* Sync flag for HW tb sync */
+static volatile int sec_tb_reset = 0;
/*
* Powersurge (old powermac SMP) support.
*/
-extern void __secondary_start_pmac_0(void);
-
/* Addresses for powersurge registers */
#define HAMMERHEAD_BASE 0xf8000000
#define HHEAD_CONFIG 0x90
@@ -106,47 +119,6 @@
/* what sort of powersurge board we have */
static int psurge_type = PSURGE_NONE;
-/* L2 and L3 cache settings to pass from CPU0 to CPU1 */
-volatile static long int core99_l2_cache;
-volatile static long int core99_l3_cache;
-
-/* Timebase freeze GPIO */
-static unsigned int core99_tb_gpio;
-
-/* Sync flag for HW tb sync */
-static volatile int sec_tb_reset = 0;
-static unsigned int pri_tb_hi, pri_tb_lo;
-static unsigned int pri_tb_stamp;
-
-static void __devinit core99_init_caches(int cpu)
-{
- if (!cpu_has_feature(CPU_FTR_L2CR))
- return;
-
- if (cpu == 0) {
- core99_l2_cache = _get_L2CR();
- printk("CPU0: L2CR is %lx\n", core99_l2_cache);
- } else {
- printk("CPU%d: L2CR was %lx\n", cpu, _get_L2CR());
- _set_L2CR(0);
- _set_L2CR(core99_l2_cache);
- printk("CPU%d: L2CR set to %lx\n", cpu, core99_l2_cache);
- }
-
- if (!cpu_has_feature(CPU_FTR_L3CR))
- return;
-
- if (cpu == 0){
- core99_l3_cache = _get_L3CR();
- printk("CPU0: L3CR is %lx\n", core99_l3_cache);
- } else {
- printk("CPU%d: L3CR was %lx\n", cpu, _get_L3CR());
- _set_L3CR(0);
- _set_L3CR(core99_l3_cache);
- printk("CPU%d: L3CR set to %lx\n", cpu, core99_l3_cache);
- }
-}
-
/*
* Set and clear IPIs for powersurge.
*/
@@ -436,65 +408,346 @@
/* Dummy implementation */
}
-static int __init smp_core99_probe(void)
+/* PowerSurge-style Macs */
+struct smp_ops_t psurge_smp_ops = {
+ .message_pass = smp_psurge_message_pass,
+ .probe = smp_psurge_probe,
+ .kick_cpu = smp_psurge_kick_cpu,
+ .setup_cpu = smp_psurge_setup_cpu,
+ .give_timebase = smp_psurge_give_timebase,
+ .take_timebase = smp_psurge_take_timebase,
+};
+#endif /* CONFIG_PPC32 - actually powersurge support */
+
+#ifdef CONFIG_PPC64
+/*
+ * G5s enable/disable the timebase via an i2c-connected clock chip.
+ */
+static struct device_node *pmac_tb_clock_chip_host;
+static u8 pmac_tb_pulsar_addr;
+static void (*pmac_tb_freeze)(int freeze);
+static DEFINE_SPINLOCK(timebase_lock);
+static unsigned long timebase;
+
+static void smp_core99_cypress_tb_freeze(int freeze)
{
-#ifdef CONFIG_6xx
- extern int powersave_nap;
-#endif
- struct device_node *cpus, *firstcpu;
- int i, ncpus = 0, boot_cpu = -1;
- u32 *tbprop = NULL;
+ u8 data;
+ int rc;
- if (ppc_md.progress) ppc_md.progress("smp_core99_probe", 0x345);
- cpus = firstcpu = find_type_devices("cpu");
- while(cpus != NULL) {
- u32 *regprop = (u32 *)get_property(cpus, "reg", NULL);
- char *stateprop = (char *)get_property(cpus, "state", NULL);
- if (regprop != NULL && stateprop != NULL &&
- !strncmp(stateprop, "running", 7))
- boot_cpu = *regprop;
- ++ncpus;
- cpus = cpus->next;
+ /* Strangely, the device-tree says address is 0xd2, but darwin
+ * accesses 0xd0 ...
+ */
+ pmac_low_i2c_setmode(pmac_tb_clock_chip_host, pmac_low_i2c_mode_combined);
+ rc = pmac_low_i2c_xfer(pmac_tb_clock_chip_host,
+ 0xd0 | pmac_low_i2c_read,
+ 0x81, &data, 1);
+ if (rc != 0)
+ goto bail;
+
+ data = (data & 0xf3) | (freeze ? 0x00 : 0x0c);
+
+ pmac_low_i2c_setmode(pmac_tb_clock_chip_host, pmac_low_i2c_mode_stdsub);
+ rc = pmac_low_i2c_xfer(pmac_tb_clock_chip_host,
+ 0xd0 | pmac_low_i2c_write,
+ 0x81, &data, 1);
+
+ bail:
+ if (rc != 0) {
+ printk("Cypress Timebase %s rc: %d\n",
+ freeze ? "freeze" : "unfreeze", rc);
+ panic("Timebase freeze failed !\n");
}
- if (boot_cpu == -1)
- printk(KERN_WARNING "Couldn't detect boot CPU !\n");
- if (boot_cpu != 0)
- printk(KERN_WARNING "Boot CPU is %d, unsupported setup !\n", boot_cpu);
+}
- if (machine_is_compatible("MacRISC4")) {
- extern struct smp_ops_t core99_smp_ops;
- core99_smp_ops.take_timebase = smp_generic_take_timebase;
- core99_smp_ops.give_timebase = smp_generic_give_timebase;
+static void smp_core99_pulsar_tb_freeze(int freeze)
+{
+ u8 data;
+ int rc;
+
+ pmac_low_i2c_setmode(pmac_tb_clock_chip_host, pmac_low_i2c_mode_combined);
+ rc = pmac_low_i2c_xfer(pmac_tb_clock_chip_host,
+ pmac_tb_pulsar_addr | pmac_low_i2c_read,
+ 0x2e, &data, 1);
+ if (rc != 0)
+ goto bail;
+
+ data = (data & 0x88) | (freeze ? 0x11 : 0x22);
+
+ pmac_low_i2c_setmode(pmac_tb_clock_chip_host, pmac_low_i2c_mode_stdsub);
+ rc = pmac_low_i2c_xfer(pmac_tb_clock_chip_host,
+ pmac_tb_pulsar_addr | pmac_low_i2c_write,
+ 0x2e, &data, 1);
+ bail:
+ if (rc != 0) {
+ printk(KERN_ERR "Pulsar Timebase %s rc: %d\n",
+ freeze ? "freeze" : "unfreeze", rc);
+ panic("Timebase freeze failed !\n");
+ }
+}
+
+
+static void smp_core99_give_timebase(void)
+{
+ /* Open i2c bus for synchronous access */
+ if (pmac_low_i2c_open(pmac_tb_clock_chip_host, 0))
+ panic("Can't open i2c for TB sync !\n");
+
+ spin_lock(&timebase_lock);
+ (*pmac_tb_freeze)(1);
+ mb();
+ timebase = get_tb();
+ spin_unlock(&timebase_lock);
+
+ while (timebase)
+ barrier();
+
+ spin_lock(&timebase_lock);
+ (*pmac_tb_freeze)(0);
+ spin_unlock(&timebase_lock);
+
+ /* Close i2c bus */
+ pmac_low_i2c_close(pmac_tb_clock_chip_host);
+}
+
+
+static void __devinit smp_core99_take_timebase(void)
+{
+ while (!timebase)
+ barrier();
+ spin_lock(&timebase_lock);
+ set_tb(timebase >> 32, timebase & 0xffffffff);
+ timebase = 0;
+ spin_unlock(&timebase_lock);
+}
+
+static void __init smp_core99_setup(int ncpus)
+{
+ struct device_node *cc = NULL;
+ struct device_node *p;
+ u32 *reg;
+ int ok;
+
+ /* HW sync only on these platforms */
+ if (!machine_is_compatible("PowerMac7,2") &&
+ !machine_is_compatible("PowerMac7,3") &&
+ !machine_is_compatible("RackMac3,1"))
+ return;
+
+ /* Look for the clock chip */
+ while ((cc = of_find_node_by_name(cc, "i2c-hwclock")) != NULL) {
+ p = of_get_parent(cc);
+ ok = p && device_is_compatible(p, "uni-n-i2c");
+ of_node_put(p);
+ if (!ok)
+ continue;
+
+ reg = (u32 *)get_property(cc, "reg", NULL);
+ if (reg == NULL)
+ continue;
+
+ switch (*reg) {
+ case 0xd2:
+ if (device_is_compatible(cc, "pulsar-legacy-slewing")) {
+ pmac_tb_freeze = smp_core99_pulsar_tb_freeze;
+ pmac_tb_pulsar_addr = 0xd2;
+ printk(KERN_INFO "Timebase clock is Pulsar chip\n");
+ } else if (device_is_compatible(cc, "cy28508")) {
+ pmac_tb_freeze = smp_core99_cypress_tb_freeze;
+ printk(KERN_INFO "Timebase clock is Cypress chip\n");
+ }
+ break;
+ case 0xd4:
+ pmac_tb_freeze = smp_core99_pulsar_tb_freeze;
+ pmac_tb_pulsar_addr = 0xd4;
+ printk(KERN_INFO "Timebase clock is Pulsar chip\n");
+ break;
+ }
+ if (pmac_tb_freeze != NULL) {
+ pmac_tb_clock_chip_host = of_get_parent(cc);
+ of_node_put(cc);
+ break;
+ }
+ }
+ if (pmac_tb_freeze == NULL) {
+ smp_ops->give_timebase = smp_generic_give_timebase;
+ smp_ops->take_timebase = smp_generic_take_timebase;
+ }
+}
+
+/* nothing to do here, caches are already set up by service processor */
+static inline void __devinit core99_init_caches(int cpu)
+{
+}
+
+#else /* CONFIG_PPC64 */
+
+/*
+ * SMP G4 powermacs use a GPIO to enable/disable the timebase.
+ */
+
+static unsigned int core99_tb_gpio; /* Timebase freeze GPIO */
+
+static unsigned int pri_tb_hi, pri_tb_lo;
+static unsigned int pri_tb_stamp;
+
+/* not __init, called in sleep/wakeup code */
+void smp_core99_give_timebase(void)
+{
+ unsigned long flags;
+ unsigned int t;
+
+ /* wait for the secondary to be in take_timebase */
+ for (t = 100000; t > 0 && !sec_tb_reset; --t)
+ udelay(10);
+ if (!sec_tb_reset) {
+ printk(KERN_WARNING "Timeout waiting sync on second CPU\n");
+ return;
+ }
+
+ /* freeze the timebase and read it */
+ /* disable interrupts so the timebase is disabled for the
+ shortest possible time */
+ local_irq_save(flags);
+ pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, core99_tb_gpio, 4);
+ pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, core99_tb_gpio, 0);
+ mb();
+ pri_tb_hi = get_tbu();
+ pri_tb_lo = get_tbl();
+ pri_tb_stamp = last_jiffy_stamp(smp_processor_id());
+ mb();
+
+ /* tell the secondary we're ready */
+ sec_tb_reset = 2;
+ mb();
+
+ /* wait for the secondary to have taken it */
+ for (t = 100000; t > 0 && sec_tb_reset; --t)
+ udelay(10);
+ if (sec_tb_reset)
+ printk(KERN_WARNING "Timeout waiting sync(2) on second CPU\n");
+ else
+ smp_tb_synchronized = 1;
+
+ /* Now, restart the timebase by leaving the GPIO to an open collector */
+ pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, core99_tb_gpio, 0);
+ pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, core99_tb_gpio, 0);
+ local_irq_restore(flags);
+}
+
+/* not __init, called in sleep/wakeup code */
+void smp_core99_take_timebase(void)
+{
+ unsigned long flags;
+
+ /* tell the primary we're here */
+ sec_tb_reset = 1;
+ mb();
+
+ /* wait for the primary to set pri_tb_hi/lo */
+ while (sec_tb_reset < 2)
+ mb();
+
+ /* set our stuff the same as the primary */
+ local_irq_save(flags);
+ set_dec(1);
+ set_tb(pri_tb_hi, pri_tb_lo);
+ last_jiffy_stamp(smp_processor_id()) = pri_tb_stamp;
+ mb();
+
+ /* tell the primary we're done */
+ sec_tb_reset = 0;
+ mb();
+ local_irq_restore(flags);
+}
+
+/* L2 and L3 cache settings to pass from CPU0 to CPU1 on G4 cpus */
+volatile static long int core99_l2_cache;
+volatile static long int core99_l3_cache;
+
+static void __devinit core99_init_caches(int cpu)
+{
+ if (!cpu_has_feature(CPU_FTR_L2CR))
+ return;
+
+ if (cpu == 0) {
+ core99_l2_cache = _get_L2CR();
+ printk("CPU0: L2CR is %lx\n", core99_l2_cache);
} else {
- if (firstcpu != NULL)
- tbprop = (u32 *)get_property(firstcpu, "timebase-enable", NULL);
+ printk("CPU%d: L2CR was %lx\n", cpu, _get_L2CR());
+ _set_L2CR(0);
+ _set_L2CR(core99_l2_cache);
+ printk("CPU%d: L2CR set to %lx\n", cpu, core99_l2_cache);
+ }
+
+ if (!cpu_has_feature(CPU_FTR_L3CR))
+ return;
+
+ if (cpu == 0){
+ core99_l3_cache = _get_L3CR();
+ printk("CPU0: L3CR is %lx\n", core99_l3_cache);
+ } else {
+ printk("CPU%d: L3CR was %lx\n", cpu, _get_L3CR());
+ _set_L3CR(0);
+ _set_L3CR(core99_l3_cache);
+ printk("CPU%d: L3CR set to %lx\n", cpu, core99_l3_cache);
+ }
+}
+
+static void __init smp_core99_setup(int ncpus)
+{
+ struct device_node *cpu;
+ u32 *tbprop = NULL;
+ int i;
+
+ core99_tb_gpio = KL_GPIO_TB_ENABLE; /* default value */
+ cpu = of_find_node_by_type(NULL, "cpu");
+ if (cpu != NULL) {
+ tbprop = (u32 *)get_property(cpu, "timebase-enable", NULL);
if (tbprop)
core99_tb_gpio = *tbprop;
- else
- core99_tb_gpio = KL_GPIO_TB_ENABLE;
+ of_node_put(cpu);
}
- if (ncpus > 1) {
- mpic_request_ipis();
- for (i = 1; i < ncpus; ++i)
- smp_hw_index[i] = i;
-#ifdef CONFIG_6xx
- powersave_nap = 0;
+ /* XXX should get this from reg properties */
+ for (i = 1; i < ncpus; ++i)
+ smp_hw_index[i] = i;
+ powersave_nap = 0;
+}
#endif
- core99_init_caches(0);
- }
+
+static int __init smp_core99_probe(void)
+{
+ struct device_node *cpus;
+ int ncpus = 0;
+
+ if (ppc_md.progress) ppc_md.progress("smp_core99_probe", 0x345);
+
+ /* Count CPUs in the device-tree */
+ for (cpus = NULL; (cpus = of_find_node_by_type(cpus, "cpu")) != NULL;)
+ ++ncpus;
+
+ printk(KERN_INFO "PowerMac SMP probe found %d cpus\n", ncpus);
+
+ /* Nothing more to do if less than 2 of them */
+ if (ncpus <= 1)
+ return 1;
+
+ smp_core99_setup(ncpus);
+ mpic_request_ipis();
+ core99_init_caches(0);
return ncpus;
}
static void __devinit smp_core99_kick_cpu(int nr)
{
- unsigned long save_vector, new_vector;
+ unsigned int save_vector;
+ unsigned long new_vector;
unsigned long flags;
+ volatile unsigned int *vector
+ = ((volatile unsigned int *)(KERNELBASE+0x100));
- volatile unsigned long *vector
- = ((volatile unsigned long *)(KERNELBASE+0x100));
if (nr < 0 || nr > 3)
return;
if (ppc_md.progress) ppc_md.progress("smp_core99_kick_cpu", 0x346);
@@ -556,113 +809,10 @@
}
}
-/* not __init, called in sleep/wakeup code */
-void smp_core99_take_timebase(void)
-{
- unsigned long flags;
- /* tell the primary we're here */
- sec_tb_reset = 1;
- mb();
-
- /* wait for the primary to set pri_tb_hi/lo */
- while (sec_tb_reset < 2)
- mb();
-
- /* set our stuff the same as the primary */
- local_irq_save(flags);
- set_dec(1);
- set_tb(pri_tb_hi, pri_tb_lo);
- last_jiffy_stamp(smp_processor_id()) = pri_tb_stamp;
- mb();
-
- /* tell the primary we're done */
- sec_tb_reset = 0;
- mb();
- local_irq_restore(flags);
-}
-
-/* not __init, called in sleep/wakeup code */
-void smp_core99_give_timebase(void)
-{
- unsigned long flags;
- unsigned int t;
-
- /* wait for the secondary to be in take_timebase */
- for (t = 100000; t > 0 && !sec_tb_reset; --t)
- udelay(10);
- if (!sec_tb_reset) {
- printk(KERN_WARNING "Timeout waiting sync on second CPU\n");
- return;
- }
-
- /* freeze the timebase and read it */
- /* disable interrupts so the timebase is disabled for the
- shortest possible time */
- local_irq_save(flags);
- pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, core99_tb_gpio, 4);
- pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, core99_tb_gpio, 0);
- mb();
- pri_tb_hi = get_tbu();
- pri_tb_lo = get_tbl();
- pri_tb_stamp = last_jiffy_stamp(smp_processor_id());
- mb();
-
- /* tell the secondary we're ready */
- sec_tb_reset = 2;
- mb();
-
- /* wait for the secondary to have taken it */
- for (t = 100000; t > 0 && sec_tb_reset; --t)
- udelay(10);
- if (sec_tb_reset)
- printk(KERN_WARNING "Timeout waiting sync(2) on second CPU\n");
- else
- smp_tb_synchronized = 1;
-
- /* Now, restart the timebase by leaving the GPIO to an open collector */
- pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, core99_tb_gpio, 0);
- pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, core99_tb_gpio, 0);
- local_irq_restore(flags);
-}
-
-void smp_core99_message_pass(int target, int msg)
-{
- cpumask_t mask = CPU_MASK_ALL;
- /* make sure we're sending something that translates to an IPI */
- if (msg > 0x3) {
- printk("SMP %d: smp_message_pass: unknown msg %d\n",
- smp_processor_id(), msg);
- return;
- }
- switch (target) {
- case MSG_ALL:
- mpic_send_ipi(msg, cpus_addr(mask)[0]);
- break;
- case MSG_ALL_BUT_SELF:
- cpu_clear(smp_processor_id(), mask);
- mpic_send_ipi(msg, cpus_addr(mask)[0]);
- break;
- default:
- mpic_send_ipi(msg, 1 << target);
- break;
- }
-}
-
-
-/* PowerSurge-style Macs */
-struct smp_ops_t psurge_smp_ops = {
- .message_pass = smp_psurge_message_pass,
- .probe = smp_psurge_probe,
- .kick_cpu = smp_psurge_kick_cpu,
- .setup_cpu = smp_psurge_setup_cpu,
- .give_timebase = smp_psurge_give_timebase,
- .take_timebase = smp_psurge_take_timebase,
-};
-
-/* Core99 Macs (dual G4s) */
+/* Core99 Macs (dual G4s and G5s) */
struct smp_ops_t core99_smp_ops = {
- .message_pass = smp_core99_message_pass,
+ .message_pass = smp_mpic_message_pass,
.probe = smp_core99_probe,
.kick_cpu = smp_core99_kick_cpu,
.setup_cpu = smp_core99_setup_cpu,
@@ -670,7 +820,7 @@
.take_timebase = smp_core99_take_timebase,
};
-#ifdef CONFIG_HOTPLUG_CPU
+#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC32)
int __cpu_disable(void)
{
@@ -685,7 +835,7 @@
return 0;
}
-extern void low_cpu_die(void) __attribute__((noreturn)); /* in pmac_sleep.S */
+extern void low_cpu_die(void) __attribute__((noreturn)); /* in sleep.S */
static int cpu_dead[NR_CPUS];
void cpu_die(void)
diff --git a/arch/powerpc/platforms/powermac/time.c b/arch/powerpc/platforms/powermac/time.c
index a6d2d23..82982bf 100644
--- a/arch/powerpc/platforms/powermac/time.c
+++ b/arch/powerpc/platforms/powermac/time.c
@@ -33,6 +33,7 @@
#include <asm/machdep.h>
#include <asm/time.h>
#include <asm/nvram.h>
+#include <asm/smu.h>
#undef DEBUG
@@ -68,8 +69,8 @@
long __init pmac_time_init(void)
{
-#ifdef CONFIG_NVRAM
s32 delta = 0;
+#ifdef CONFIG_NVRAM
int dst;
delta = ((s32)pmac_xpram_read(PMAC_XPRAM_MACHINE_LOC + 0x9)) << 16;
@@ -80,110 +81,181 @@
dst = ((pmac_xpram_read(PMAC_XPRAM_MACHINE_LOC + 0x8) & 0x80) != 0);
printk("GMT Delta read from XPRAM: %d minutes, DST: %s\n", delta/60,
dst ? "on" : "off");
- return delta;
-#else
- return 0;
#endif
+ return delta;
}
+static void to_rtc_time(unsigned long now, struct rtc_time *tm)
+{
+ to_tm(now, tm);
+ tm->tm_year -= 1900;
+ tm->tm_mon -= 1;
+}
+
+static unsigned long from_rtc_time(struct rtc_time *tm)
+{
+ return mktime(tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
+}
+
+#ifdef CONFIG_ADB_CUDA
+static unsigned long cuda_get_time(void)
+{
+ struct adb_request req;
+ unsigned long now;
+
+ if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
+ return 0;
+ while (!req.complete)
+ cuda_poll();
+ if (req.reply_len != 7)
+ printk(KERN_ERR "cuda_get_time: got %d byte reply\n",
+ req.reply_len);
+ now = (req.reply[3] << 24) + (req.reply[4] << 16)
+ + (req.reply[5] << 8) + req.reply[6];
+ if (now < RTC_OFFSET)
+ return 0;
+ return now - RTC_OFFSET;
+}
+
+#define cuda_get_rtc_time(tm) to_rtc_time(cuda_get_time(), (tm))
+
+static int cuda_set_rtc_time(struct rtc_time *tm)
+{
+ unsigned int nowtime;
+ struct adb_request req;
+
+ nowtime = from_rtc_time(tm) + RTC_OFFSET;
+ if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
+ nowtime >> 24, nowtime >> 16, nowtime >> 8,
+ nowtime) < 0)
+ return -ENXIO;
+ while (!req.complete)
+ cuda_poll();
+ if ((req.reply_len != 3) && (req.reply_len != 7))
+ printk(KERN_ERR "cuda_set_rtc_time: got %d byte reply\n",
+ req.reply_len);
+ return 0;
+}
+
+#else
+#define cuda_get_time() 0
+#define cuda_get_rtc_time(tm)
+#define cuda_set_rtc_time(tm) 0
+#endif
+
+#ifdef CONFIG_ADB_PMU
+static unsigned long pmu_get_time(void)
+{
+ struct adb_request req;
+ unsigned long now;
+
+ if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
+ return 0;
+ pmu_wait_complete(&req);
+ if (req.reply_len != 4)
+ printk(KERN_ERR "pmu_get_time: got %d byte reply from PMU\n",
+ req.reply_len);
+ now = (req.reply[0] << 24) + (req.reply[1] << 16)
+ + (req.reply[2] << 8) + req.reply[3];
+ if (now < RTC_OFFSET)
+ return 0;
+ return now - RTC_OFFSET;
+}
+
+#define pmu_get_rtc_time(tm) to_rtc_time(pmu_get_time(), (tm))
+
+static int pmu_set_rtc_time(struct rtc_time *tm)
+{
+ unsigned int nowtime;
+ struct adb_request req;
+
+ nowtime = from_rtc_time(tm) + RTC_OFFSET;
+ if (pmu_request(&req, NULL, 5, PMU_SET_RTC, nowtime >> 24,
+ nowtime >> 16, nowtime >> 8, nowtime) < 0)
+ return -ENXIO;
+ pmu_wait_complete(&req);
+ if (req.reply_len != 0)
+ printk(KERN_ERR "pmu_set_rtc_time: %d byte reply from PMU\n",
+ req.reply_len);
+ return 0;
+}
+
+#else
+#define pmu_get_time() 0
+#define pmu_get_rtc_time(tm)
+#define pmu_set_rtc_time(tm) 0
+#endif
+
+#ifdef CONFIG_PMAC_SMU
+static unsigned long smu_get_time(void)
+{
+ struct rtc_time tm;
+
+ if (smu_get_rtc_time(&tm, 1))
+ return 0;
+ return from_rtc_time(&tm);
+}
+
+#else
+#define smu_get_time() 0
+#define smu_get_rtc_time(tm, spin)
+#define smu_set_rtc_time(tm, spin) 0
+#endif
+
unsigned long pmac_get_boot_time(void)
{
-#if defined(CONFIG_ADB_CUDA) || defined(CONFIG_ADB_PMU)
- struct adb_request req;
- unsigned long now;
-#endif
-
- /* Get the time from the RTC */
+ /* Get the time from the RTC, used only at boot time */
switch (sys_ctrler) {
-#ifdef CONFIG_ADB_CUDA
case SYS_CTRLER_CUDA:
- if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
- return 0;
- while (!req.complete)
- cuda_poll();
- if (req.reply_len != 7)
- printk(KERN_ERR "pmac_get_rtc_time: got %d byte reply\n",
- req.reply_len);
- now = (req.reply[3] << 24) + (req.reply[4] << 16)
- + (req.reply[5] << 8) + req.reply[6];
- return now - RTC_OFFSET;
-#endif /* CONFIG_ADB_CUDA */
-#ifdef CONFIG_ADB_PMU
+ return cuda_get_time();
case SYS_CTRLER_PMU:
- if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
- return 0;
- while (!req.complete)
- pmu_poll();
- if (req.reply_len != 4)
- printk(KERN_ERR "pmac_get_rtc_time: got %d byte reply\n",
- req.reply_len);
- now = (req.reply[0] << 24) + (req.reply[1] << 16)
- + (req.reply[2] << 8) + req.reply[3];
- return now - RTC_OFFSET;
-#endif /* CONFIG_ADB_PMU */
- default: ;
- }
- return 0;
-}
-
-void pmac_get_rtc_time(struct rtc_time *tm)
-{
- unsigned long now;
-
- now = pmac_get_boot_time();
- to_tm(now, tm);
- tm->tm_year -= 1900;
- tm->tm_mon -= 1; /* month is 0-based */
-}
-
-int pmac_set_rtc_time(struct rtc_time *tm)
-{
- unsigned long nowtime;
-#if defined(CONFIG_ADB_CUDA) || defined(CONFIG_ADB_PMU)
- struct adb_request req;
-#endif
-
- nowtime = mktime(tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
- tm->tm_hour, tm->tm_min, tm->tm_sec);
- nowtime += RTC_OFFSET;
-
- switch (sys_ctrler) {
-#ifdef CONFIG_ADB_CUDA
- case SYS_CTRLER_CUDA:
- if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
- nowtime >> 24, nowtime >> 16, nowtime >> 8,
- nowtime) < 0)
- return 0;
- while (!req.complete)
- cuda_poll();
- if ((req.reply_len != 3) && (req.reply_len != 7))
- printk(KERN_ERR "pmac_set_rtc_time: got %d byte reply\n",
- req.reply_len);
- return 1;
-#endif /* CONFIG_ADB_CUDA */
-#ifdef CONFIG_ADB_PMU
- case SYS_CTRLER_PMU:
- if (pmu_request(&req, NULL, 5, PMU_SET_RTC,
- nowtime >> 24, nowtime >> 16, nowtime >> 8, nowtime) < 0)
- return 0;
- while (!req.complete)
- pmu_poll();
- if (req.reply_len != 0)
- printk(KERN_ERR "pmac_set_rtc_time: got %d byte reply\n",
- req.reply_len);
- return 1;
-#endif /* CONFIG_ADB_PMU */
+ return pmu_get_time();
+ case SYS_CTRLER_SMU:
+ return smu_get_time();
default:
return 0;
}
}
+void pmac_get_rtc_time(struct rtc_time *tm)
+{
+ /* Get the time from the RTC, used only at boot time */
+ switch (sys_ctrler) {
+ case SYS_CTRLER_CUDA:
+ cuda_get_rtc_time(tm);
+ break;
+ case SYS_CTRLER_PMU:
+ pmu_get_rtc_time(tm);
+ break;
+ case SYS_CTRLER_SMU:
+ smu_get_rtc_time(tm, 1);
+ break;
+ default:
+ ;
+ }
+}
+
+int pmac_set_rtc_time(struct rtc_time *tm)
+{
+ switch (sys_ctrler) {
+ case SYS_CTRLER_CUDA:
+ return cuda_set_rtc_time(tm);
+ case SYS_CTRLER_PMU:
+ return pmu_set_rtc_time(tm);
+ case SYS_CTRLER_SMU:
+ return smu_set_rtc_time(tm, 1);
+ default:
+ return -ENODEV;
+ }
+}
+
+#ifdef CONFIG_PPC32
/*
* Calibrate the decrementer register using VIA timer 1.
* This is used both on powermacs and CHRP machines.
*/
-int __init
-via_calibrate_decr(void)
+int __init via_calibrate_decr(void)
{
struct device_node *vias;
volatile unsigned char __iomem *via;
@@ -217,15 +289,12 @@
dend = get_dec();
ppc_tb_freq = (dstart - dend) * 100 / 6;
- tb_ticks_per_jiffy = (dstart - dend) / ((6 * HZ)/100);
-
- printk(KERN_INFO "via_calibrate_decr: ticks per jiffy = %lu (%u ticks)\n",
- tb_ticks_per_jiffy, dstart - dend);
iounmap(via);
return 1;
}
+#endif
#ifdef CONFIG_PM
/*
@@ -262,19 +331,17 @@
/*
* Query the OF and get the decr frequency.
- * This was taken from the pmac time_init() when merging the prep/pmac
- * time functions.
*/
-void __init
-pmac_calibrate_decr(void)
+void __init pmac_calibrate_decr(void)
{
- struct device_node *cpu;
- unsigned int freq, *fp;
-
#ifdef CONFIG_PM
+ /* XXX why here? */
pmu_register_sleep_notifier(&time_sleep_notifier);
#endif /* CONFIG_PM */
+ generic_calibrate_decr();
+
+#ifdef CONFIG_PPC32
/* We assume MacRISC2 machines have correct device-tree
* calibration. That's better since the VIA itself seems
* to be slightly off. --BenH
@@ -293,18 +360,5 @@
if (machine_is_compatible("PowerMac3,5"))
if (via_calibrate_decr())
return;
- /*
- * The cpu node should have a timebase-frequency property
- * to tell us the rate at which the decrementer counts.
- */
- cpu = find_type_devices("cpu");
- if (cpu == 0)
- panic("can't find cpu node in time_init");
- fp = (unsigned int *) get_property(cpu, "timebase-frequency", NULL);
- if (fp == 0)
- panic("can't get cpu timebase frequency");
- freq = *fp;
- printk("time_init: decrementer frequency = %u.%.6u MHz\n",
- freq/1000000, freq%1000000);
- ppc_tb_freq = freq;
+#endif
}
diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h
index 8a0969b..b3a93b4 100644
--- a/include/asm-powerpc/machdep.h
+++ b/include/asm-powerpc/machdep.h
@@ -119,6 +119,8 @@
/* Interface for platform error logging */
void (*log_error)(char *buf, unsigned int err_type, int fatal);
+ unsigned char (*nvram_read_val)(int addr);
+ void (*nvram_write_val)(int addr, unsigned char val);
ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
ssize_t (*nvram_size)(void);
@@ -165,15 +167,11 @@
unsigned long heartbeat_reset;
unsigned long heartbeat_count;
- unsigned long (*find_end_of_memory)(void);
void (*setup_io_mappings)(void);
void (*early_serial_map)(void);
void (*kgdb_map_scc)(void);
- unsigned char (*nvram_read_val)(int addr);
- void (*nvram_write_val)(int addr, unsigned char val);
-
/*
* optional PCI "hooks"
*/
diff --git a/include/asm-ppc64/system.h b/include/asm-ppc64/system.h
index d1e0093..2e17ef7 100644
--- a/include/asm-ppc64/system.h
+++ b/include/asm-ppc64/system.h
@@ -148,6 +148,8 @@
extern struct task_struct * _switch(struct thread_struct *prev,
struct thread_struct *next);
+extern int powersave_nap; /* set if nap mode can be used in idle loop */
+
/*
* Atomic exchange
*
diff --git a/include/asm-ppc64/udbg.h b/include/asm-ppc64/udbg.h
index c786604..8192fb8 100644
--- a/include/asm-ppc64/udbg.h
+++ b/include/asm-ppc64/udbg.h
@@ -28,4 +28,7 @@
extern void __init ppcdbg_initialize(void);
extern void udbg_init_uart(void __iomem *comport, unsigned int speed);
+
+struct device_node;
+extern void udbg_init_scc(struct device_node *np);
#endif
