| README for MIPS AU1XXX IDE driver - Released 2005-07-15 | |
| ABOUT | |
| ----- | |
| This file describes the 'drivers/ide/au1xxx-ide.c', related files and the | |
| services they provide. | |
| If you are short in patience and just want to know how to add your hard disc to | |
| the white or black list, go to the 'ADD NEW HARD DISC TO WHITE OR BLACK LIST' | |
| section. | |
| LICENSE | |
| ------- | |
| Copyright (c) 2003-2005 AMD, Personal Connectivity Solutions | |
| This program is free software; you can redistribute it and/or modify it under | |
| the terms of the GNU General Public License as published by the Free Software | |
| Foundation; either version 2 of the License, or (at your option) any later | |
| version. | |
| THIS SOFTWARE IS PROVIDED ``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 AUTHOR | |
| 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. | |
| 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., | |
| 675 Mass Ave, Cambridge, MA 02139, USA. | |
| Note: for more information, please refer "AMD Alchemy Au1200/Au1550 IDE | |
| Interface and Linux Device Driver" Application Note. | |
| FILES, CONFIGS AND COMPATIBILITY | |
| -------------------------------- | |
| Two files are introduced: | |
| a) 'arch/mips/include/asm/mach-au1x00/au1xxx_ide.h' | |
| contains : struct _auide_hwif | |
| timing parameters for PIO mode 0/1/2/3/4 | |
| timing parameters for MWDMA 0/1/2 | |
| b) 'drivers/ide/mips/au1xxx-ide.c' | |
| contains the functionality of the AU1XXX IDE driver | |
| Following extra configs variables are introduced: | |
| CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA - enable the PIO+DBDMA mode | |
| CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA - enable the MWDMA mode | |
| CONFIG_BLK_DEV_IDE_AU1XXX_BURSTABLE_ON - set Burstable FIFO in DBDMA | |
| controller | |
| SUPPORTED IDE MODES | |
| ------------------- | |
| The AU1XXX IDE driver supported all PIO modes - PIO mode 0/1/2/3/4 - and all | |
| MWDMA modes - MWDMA 0/1/2 -. There is no support for SWDMA and UDMA mode. | |
| To change the PIO mode use the program hdparm with option -p, e.g. | |
| 'hdparm -p0 [device]' for PIO mode 0. To enable the MWDMA mode use the option | |
| -X, e.g. 'hdparm -X32 [device]' for MWDMA mode 0. | |
| PERFORMANCE CONFIGURATIONS | |
| -------------------------- | |
| If the used system doesn't need USB support enable the following kernel configs: | |
| CONFIG_IDE=y | |
| CONFIG_BLK_DEV_IDE=y | |
| CONFIG_IDE_GENERIC=y | |
| CONFIG_BLK_DEV_IDEPCI=y | |
| CONFIG_BLK_DEV_GENERIC=y | |
| CONFIG_BLK_DEV_IDEDMA_PCI=y | |
| CONFIG_IDEDMA_PCI_AUTO=y | |
| CONFIG_BLK_DEV_IDE_AU1XXX=y | |
| CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=y | |
| CONFIG_BLK_DEV_IDEDMA=y | |
| CONFIG_IDEDMA_AUTO=y | |
| Also define 'IDE_AU1XXX_BURSTMODE' in 'drivers/ide/mips/au1xxx-ide.c' to enable | |
| the burst support on DBDMA controller. | |
| If the used system need the USB support enable the following kernel configs for | |
| high IDE to USB throughput. | |
| CONFIG_BLK_DEV_IDEDISK=y | |
| CONFIG_IDE_GENERIC=y | |
| CONFIG_BLK_DEV_IDEPCI=y | |
| CONFIG_BLK_DEV_GENERIC=y | |
| CONFIG_BLK_DEV_IDEDMA_PCI=y | |
| CONFIG_IDEDMA_PCI_AUTO=y | |
| CONFIG_BLK_DEV_IDE_AU1XXX=y | |
| CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=y | |
| CONFIG_BLK_DEV_IDEDMA=y | |
| CONFIG_IDEDMA_AUTO=y | |
| Also undefine 'IDE_AU1XXX_BURSTMODE' in 'drivers/ide/mips/au1xxx-ide.c' to | |
| disable the burst support on DBDMA controller. | |
| ACKNOWLEDGMENTS | |
| --------------- | |
| These drivers wouldn't have been done without the base of kernel 2.4.x AU1XXX | |
| IDE driver from AMD. | |
| Additional input also from: | |
| Matthias Lenk <matthias.lenk@amd.com> | |
| Happy hacking! | |
| Enrico Walther <enrico.walther@amd.com> |