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Re: [PATCH] make PIIX4 ide driver available for MIPS

To: Jun Sun <jsun@mvista.com>
Subject: Re: [PATCH] make PIIX4 ide driver available for MIPS
From: Zhang Fuxin <fxzhang@ict.ac.cn>
Date: Wed, 24 Jul 2002 09:00:48 +0800
Cc: Ralf Baechle <ralf@uni-koblenz.de>, linux-mips@oss.sgi.com
References: <3D3DF04E.7070401@mvista.com>
Sender: owner-linux-mips@oss.sgi.com
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.8) Gecko/20020204
Algor p6032 board use it too. We have been using native driver for a long time.

Jun Sun wrote:


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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