From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergei Shtylyov Subject: Re: [loongson-PATCH-v1 24/27] fixup for FUJITSU disk Date: Mon, 25 May 2009 23:05:27 +0400 Message-ID: <4A1AEBF7.7040402@ru.mvista.com> References: <1243230339.9819.18.camel@localhost.localdomain> <4A1A4A54.6090401@lemote.com> <200905251656.25357.bzolnier@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <200905251656.25357.bzolnier@gmail.com> Sender: linux-scsi-owner@vger.kernel.org To: Bartlomiej Zolnierkiewicz Cc: =?UTF-8?B?6IOh5rSq5YW1?= , yanh@lemote.com, wuzhangjin@gmail.com, linux-mips@linux-mips.org, Ralf Baechle , IDE/ATA development list , Linux Kernel , linux-scsi , Philippe Vachon , Zhang Le , Zhang Fuxin , Arnaud Patard , loongson-dev@googlegroups.com, gnewsense-dev@nongnu.org, Nicholas Mc Guire , Liu Junliang , Erwan Lerale List-Id: linux-ide@vger.kernel.org Bartlomiej Zolnierkiewicz wrote: >>yanh =E5=86=99=E9=81=93: > [...] >>>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.=20 >>>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=20 >>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 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html