From: Tejun Heo <htejun@gmail.com>
To: Mark Lord <liml@rtr.ca>
Cc: Jeff Garzik <jeff@garzik.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
IDE/ATA development list <linux-ide@vger.kernel.org>,
andre@linux-ide.org,
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: Re: [CALL-FOR-HELP] pata_ali: can't get MWDMA working!
Date: Thu, 10 Jan 2008 10:49:33 +0900 [thread overview]
Message-ID: <478579AD.2020301@gmail.com> (raw)
In-Reply-To: <4785038D.1030503@rtr.ca>
Mark Lord wrote:
> Are you really sure that the old IDE is actually issuing DMA commands,
> rather than falling back to PIO ?
Yeap, pretty sure. Here is debug dump of IDE transferring sector zero.
[ 114.377898] XXX writing 0x8 to dma_cmd
[ 114.381718] XXX read dma_stat 0x24 and writing 0x26
[ 114.386638] XXX writing feat=0x1 ireason=0 sector=0 cntl=0x0
cnth=0x80 ctrl=0x8
[ 114.393991] XXX executing WIN_PACKETCMD
[ 114.397878] XXX CDB 28 00 00 00 00 00 00 00 01 00 00 00
[ 114.403899] XXX writing 0x8 | 1 to dma_command
--
tejun
next prev parent reply other threads:[~2008-01-10 1:49 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-09 16:52 [CALL-FOR-HELP] pata_ali: can't get MWDMA working! Tejun Heo
2008-01-09 17:01 ` Tejun Heo
2008-01-09 17:16 ` Alan Cox
2008-01-09 17:28 ` Alan Cox
2008-01-10 1:44 ` Tejun Heo
2008-01-09 17:25 ` Mark Lord
2008-01-10 1:49 ` Tejun Heo [this message]
2008-01-09 17:27 ` Sergei Shtylyov
2008-01-10 2:14 ` Tejun Heo
2008-01-09 22:55 ` Bartlomiej Zolnierkiewicz
2008-01-10 1:39 ` Tejun Heo
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