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From: Jeff Garzik <jeff@garzik.org>
To: Tejun Heo <htejun@gmail.com>
Cc: Mark Lord <liml@rtr.ca>, Alan Cox <alan@lxorguk.ukuu.org.uk>,
	Alan Cox <alan@redhat.com>,
	IDE/ATA development list <linux-ide@vger.kernel.org>
Subject: Re: libata fails to recover from HSM violation involving DRQ status
Date: Sat, 28 Apr 2007 23:46:02 -0400	[thread overview]
Message-ID: <463414FA.5080802@garzik.org> (raw)
In-Reply-To: <46340E63.5070209@gmail.com>

Tejun Heo wrote:
> and thus clear DRQ, right?  Stuck DRQ after SRST seems odd to me.

Unfortunately not odd on ata_piix, which can get stuck DRQ-on somewhere 
deep inside its IDE emulation engine.  And neither draining the FIFO nor 
SRST nor a couple other tricks ever helped.  The only thing that seemed 
to make any difference was an enable/disable reset via our beloved PCS 
register.

	Jeff



  reply	other threads:[~2007-04-29  3:46 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-04-28 20:15 libata fails to recover from HSM violation involving DRQ status Mark Lord
2007-04-28 20:18 ` Mark Lord
2007-04-28 20:30 ` Alan Cox
2007-04-28 20:37 ` Jeff Garzik
2007-04-28 20:44   ` Mark Lord
2007-04-28 20:50     ` Jeff Garzik
2007-04-28 21:25   ` Alan Cox
2007-04-28 21:35     ` Mark Lord
2007-04-28 21:38     ` Jeff Garzik
2007-04-28 21:41       ` Mark Lord
2007-04-29  3:17         ` Tejun Heo
2007-04-29  3:46           ` Jeff Garzik [this message]
2007-04-29  7:45             ` Tejun Heo
2007-04-29  3:51           ` Tejun Heo
2007-04-29 11:56             ` Mark Lord
2007-04-29 12:59               ` Mark Lord
2007-04-29 13:13                 ` Mark Lord
2007-04-29 16:42                   ` Tejun Heo
2007-04-29 16:47                     ` Mark Lord
2007-04-29 18:49                       ` Mark Lord
2007-04-29 19:05                         ` Mark Lord
2007-04-30  0:59                           ` Tejun Heo
2007-04-29 19:07                         ` Mark Lord
2007-04-30  0:54                           ` Tejun Heo
2007-04-30  3:42                             ` Mark Lord
2007-04-30  3:58                               ` Tejun Heo
2007-04-30 17:47                             ` Mark Lord
2007-05-01  0:23                               ` Mark Lord
2007-05-01  2:47                                 ` Tejun Heo
2007-05-01 13:00                       ` Mark Lord
2007-05-11  3:33                         ` Mark Lord
2007-05-11  3:35                           ` Mark Lord
2007-04-29 12:07           ` Mark Lord
2007-04-29 16:36             ` Tejun Heo
2007-04-28 23:56       ` Alan Cox
2007-04-28 22:09 ` Mark Lord
2007-04-29  3:04   ` Tejun Heo

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