1 README for MIPS AU1XXX IDE driver - Released 2005-07-15
5 This file describes the 'drivers/ide/mips/au1xxx-ide.c', related files and the
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16 Copyright (c) 2003-2005 AMD, Personal Connectivity Solutions
18 This program is free software; you can redistribute it and/or modify it under
19 the terms of the GNU General Public License as published by the Free Software
20 Foundation; either version 2 of the License, or (at your option) any later
23 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
24 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
25 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
26 BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 POSSIBILITY OF SUCH DAMAGE.
34 You should have received a copy of the GNU General Public License along with
35 this program; if not, write to the Free Software Foundation, Inc.,
36 675 Mass Ave, Cambridge, MA 02139, USA.
38 Note: for more information, please refer "AMD Alchemy Au1200/Au1550 IDE
39 Interface and Linux Device Driver" Application Note.
42 FILES, CONFIGS AND COMPATIBILITY
43 --------------------------------
45 Two files are introduced:
47 a) 'arch/mips/include/asm/mach-au1x00/au1xxx_ide.h'
48 contains : struct _auide_hwif
49 timing parameters for PIO mode 0/1/2/3/4
50 timing parameters for MWDMA 0/1/2
52 b) 'drivers/ide/mips/au1xxx-ide.c'
53 contains the functionality of the AU1XXX IDE driver
55 Following extra configs variables are introduced:
57 CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA - enable the PIO+DBDMA mode
58 CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA - enable the MWDMA mode
59 CONFIG_BLK_DEV_IDE_AU1XXX_BURSTABLE_ON - set Burstable FIFO in DBDMA
66 The AU1XXX IDE driver supported all PIO modes - PIO mode 0/1/2/3/4 - and all
67 MWDMA modes - MWDMA 0/1/2 -. There is no support for SWDMA and UDMA mode.
69 To change the PIO mode use the program hdparm with option -p, e.g.
70 'hdparm -p0 [device]' for PIO mode 0. To enable the MWDMA mode use the option
71 -X, e.g. 'hdparm -X32 [device]' for MWDMA mode 0.
74 PERFORMANCE CONFIGURATIONS
75 --------------------------
77 If the used system doesn't need USB support enable the following kernel configs:
82 CONFIG_BLK_DEV_IDEPCI=y
83 CONFIG_BLK_DEV_GENERIC=y
84 CONFIG_BLK_DEV_IDEDMA_PCI=y
85 CONFIG_IDEDMA_PCI_AUTO=y
86 CONFIG_BLK_DEV_IDE_AU1XXX=y
87 CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=y
88 CONFIG_BLK_DEV_IDEDMA=y
91 Also define 'IDE_AU1XXX_BURSTMODE' in 'drivers/ide/mips/au1xxx-ide.c' to enable
92 the burst support on DBDMA controller.
94 If the used system need the USB support enable the following kernel configs for
95 high IDE to USB throughput.
97 CONFIG_BLK_DEV_IDEDISK=y
99 CONFIG_BLK_DEV_IDEPCI=y
100 CONFIG_BLK_DEV_GENERIC=y
101 CONFIG_BLK_DEV_IDEDMA_PCI=y
102 CONFIG_IDEDMA_PCI_AUTO=y
103 CONFIG_BLK_DEV_IDE_AU1XXX=y
104 CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=y
105 CONFIG_BLK_DEV_IDEDMA=y
108 Also undefine 'IDE_AU1XXX_BURSTMODE' in 'drivers/ide/mips/au1xxx-ide.c' to
109 disable the burst support on DBDMA controller.
115 These drivers wouldn't have been done without the base of kernel 2.4.x AU1XXX
118 Additional input also from:
119 Matthias Lenk <matthias.lenk@amd.com>
122 Enrico Walther <enrico.walther@amd.com>