From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
To: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: 胡洪兵 <huhb@lemote.com>,
yanh@lemote.com, wuzhangjin@gmail.com, linux-mips@linux-mips.org,
"Ralf Baechle" <ralf@linux-mips.org>,
"IDE/ATA development list" <linux-ide@vger.kernel.org>,
"Linux Kernel" <linux-kernel@vger.kernel.org>,
linux-scsi <linux-scsi@vger.kernel.org>,
"Philippe Vachon" <philippe@cowpig.ca>,
"Zhang Le" <r0bertz@gentoo.org>,
"Zhang Fuxin" <zhangfx@lemote.com>,
"Arnaud Patard" <apatard@mandriva.com>,
loongson-dev@googlegroups.com, gnewsense-dev@nongnu.org,
"Nicholas Mc Guire" <hofrat@hofr.at>,
"Liu Junliang" <liujl@lemote.com>,
"Erwan Lerale" <erwan@thiscow.com>
Subject: Re: [loongson-PATCH-v1 24/27] fixup for FUJITSU disk
Date: Mon, 25 May 2009 23:05:27 +0400 [thread overview]
Message-ID: <4A1AEBF7.7040402@ru.mvista.com> (raw)
In-Reply-To: <200905251656.25357.bzolnier@gmail.com>
Bartlomiej Zolnierkiewicz wrote:
>>yanh 写道:
> [...]
>>>the cs5536 pata driver have some geode platform dependent codes. We can
>>>just ignore it, but the performance is poor(using hdparm to test it),
>>>which only get 22+ MB/s. we find it only use udma2. However if using
>>>amd74xx driver, it can set udma5, and the speed can reach to 50+ MB/s.
>>>we will test whether this driver is working well without this patch.
>>>Anyway, thanks your advice.
>>Use the driver drivers/ata/pata_cs5536.c, unfortunately it also have the
>>same issue.
> Both drivers (pata_cs5536 & cs5536) should handle UDMA5.
> Could you please explain the issue with platform specific code a bit more?
> Is it related to a cable detection by any chance?
I guess it's rdmsr()/wrmsr()...
> Thanks.
> Bart
MBR, Sergei
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next prev parent reply other threads:[~2009-05-25 19:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1242855716.git.wuzhangjin@gmail.com>
2009-05-20 22:12 ` [loongson-PATCH-v1 24/27] fixup for FUJITSU disk wuzhangjin
2009-05-22 18:32 ` Bartlomiej Zolnierkiewicz
2009-05-23 7:11 ` yanh
2009-05-23 11:47 ` Bartlomiej Zolnierkiewicz
2009-05-25 5:45 ` yanh
2009-05-25 7:35 ` 胡洪兵
2009-05-25 14:56 ` Bartlomiej Zolnierkiewicz
2009-05-25 19:05 ` Sergei Shtylyov [this message]
2009-05-25 19:10 ` Martin K. Petersen
2009-05-25 19:17 ` Sergei Shtylyov
2009-05-26 1:21 ` yanh
2009-05-26 7:56 ` Alan Cox
2009-05-26 14:39 ` yanh
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