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[PATCH] make PIIX4 ide driver available for MIPS

To: Ralf Baechle <ralf@uni-koblenz.de>, linux-mips@oss.sgi.com
Subject: [PATCH] make PIIX4 ide driver available for MIPS
From: Jun Sun <jsun@mvista.com>
Date: Tue, 23 Jul 2002 17:09:50 -0700
Sender: owner-linux-mips@oss.sgi.com
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.9) Gecko/20020408

Malta uses this chip. The native driver does provide significant gain in performance. See attached bonnie++ test results.

Two separate patches for both linux_2_4 branch and trunk.

Jun
diff -Nru link/drivers/ide/Config.in.orig link/drivers/ide/Config.in
--- link/drivers/ide/Config.in.orig     Wed Jun 26 15:35:44 2002
+++ link/drivers/ide/Config.in  Tue Jul 23 17:03:44 2002
@@ -72,7 +72,7 @@
            dep_bool '    HPT34X chipset support' CONFIG_BLK_DEV_HPT34X 
$CONFIG_BLK_DEV_IDEDMA_PCI
            dep_mbool '      HPT34X AUTODMA support (WIP)' 
CONFIG_HPT34X_AUTODMA $CONFIG_BLK_DEV_HPT34X $CONFIG_IDEDMA_PCI_WIP
            dep_bool '    HPT366/368/370 chipset support' CONFIG_BLK_DEV_HPT366 
$CONFIG_BLK_DEV_IDEDMA_PCI
-           if [ "$CONFIG_X86" = "y" -o "$CONFIG_IA64" = "y" ]; then
+           if [ "$CONFIG_X86" = "y" -o "$CONFIG_IA64" = "y" -o "$CONFIG_MIPS" 
= "y" -o "$CONFIG_MIPS64" = "y" ]; then
               dep_mbool '    Intel PIIXn chipsets support' CONFIG_BLK_DEV_PIIX 
$CONFIG_BLK_DEV_IDEDMA_PCI
               dep_mbool '      PIIXn Tuning support' CONFIG_PIIX_TUNING 
$CONFIG_BLK_DEV_PIIX $CONFIG_IDEDMA_PCI_AUTO
            fi
diff -Nru link/drivers/ide/Config.in.orig link/drivers/ide/Config.in
--- link/drivers/ide/Config.in.orig     Wed Jul 10 14:04:49 2002
+++ link/drivers/ide/Config.in  Tue Jul 23 17:06:55 2002
@@ -70,7 +70,7 @@
            dep_bool '    HPT34X chipset support' CONFIG_BLK_DEV_HPT34X 
$CONFIG_BLK_DEV_IDEDMA_PCI
            dep_mbool '      HPT34X AUTODMA support (WIP)' 
CONFIG_HPT34X_AUTODMA $CONFIG_BLK_DEV_HPT34X $CONFIG_IDEDMA_PCI_WIP
            dep_bool '    HPT366 chipset support' CONFIG_BLK_DEV_HPT366 
$CONFIG_BLK_DEV_IDEDMA_PCI
-           if [ "$CONFIG_X86" = "y" -o "$CONFIG_IA64" = "y" ]; then
+           if [ "$CONFIG_X86" = "y" -o "$CONFIG_IA64" = "y" -o "$CONFIG_MIPS" 
= "y" -o "$CONFIG_MIPS64" = "y" ]; then
               dep_mbool '    Intel PIIXn chipsets support' CONFIG_BLK_DEV_PIIX 
$CONFIG_BLK_DEV_IDEDMA_PCI
               dep_mbool '      PIIXn Tuning support' CONFIG_PIIX_TUNING 
$CONFIG_BLK_DEV_PIIX $CONFIG_IDEDMA_PCI_AUTO
            fi
==========================
. bonnie++ test:

With PIIX4 controller code and turnning
---------------------------------------

Version  1.92       ------Sequential Output------ --Sequential Input- --Random- 
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- 
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP 
10.0.18.6      300M    44  99  4969  73  2875  65    65  99  5219  70 117.0  20 
Latency               186ms     342ms     476ms     138ms   12186us    2550ms   
Version  1.92       ------Sequential Create------ --------Random Create-------- 
10.0.18.6           -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- 
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP 
                 16    83  99  1677 100  1158  98    87  99  1849 100   302  98 
Latency             25192us    2257us    2009us   45175us    1163us    9985us   

With PIIX4 controller code:
--------------------------

Version  1.92       ------Sequential Output------ --Sequential Input- --Random- 
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- 
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP 
10.0.18.6      300M    44  99  4548  67  2517  56    65  99  5019  69 114.1  20 
Latency               186ms     436ms    1652ms     147ms   14697us    2418ms   
Version  1.92       ------Sequential Create------ --------Random Create-------- 
10.0.18.6           -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- 
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP 
                 16    83  99  1663  99  1141  98    87  99  1819 100   304  98 
Latency             32274us    1690us    2826us   37199us    1157us   10074us   

Use PCI generic code
--------------------
Version  1.92       ------Sequential Output------ --Sequential Input- --Random- 
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- 
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP 
10.0.18.6      300M    44  99  2433  35  1201  26    64  98  3101  44  85.5  14 
Latency               186ms    4190ms    2722ms     168ms   40544us    1922ms   
Version  1.92       ------Sequential Create------ --------Random Create-------- 
10.0.18.6           -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- 
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP 
                 16    83  99  1607  99  1115  95    87  99  1788 100   305  98 
Latency             24155us    2249us    2496us   33010us    1021us   10074us   


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