From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
To: Steven Scholz <steven.scholz@imc-berlin.de>
Cc: linux-ide@vger.kernel.org
Subject: Re: no DRQ after issuing MULTWRITE_EXT ?
Date: Thu, 01 Feb 2007 16:06:21 +0300 [thread overview]
Message-ID: <45C1E5CD.8010707@ru.mvista.com> (raw)
In-Reply-To: <45C1B079.3080704@imc-berlin.de>
Hello.
Steven Scholz wrote:
> I am seeing kernel messages like
> [ 1284.480000] hda: status timeout: status=0xd0 { Busy }
> [ 1284.480000] ide: failed opcode was: unknown
> [ 1284.480000] hda: no DRQ after issuing MULTWRITE_EXT
> [ 1284.490000] ide0: unexpected interrupt, status=0x80, count=1
> [ 1284.830000] ide0: reset: success
Looks like a spurious interrupt... Is your IDE IRQ shared with other devices?
> with a 2.5" Seagate ST940813AM on my embedded ARM system (linux 2.6.14, no
> IDE controller. HDD registers just memory mapped).
> HDD is used in PIO4 with MultSect=16.
> What exactly does that mean? Only that the HDD is to slow to answer this
> request with 100ms (WAIT_DRQ=(HZ/10))?
Doubt it. The old ATA standard specified the maximum DRQ assertion time of
20 ms.
> And will the request issued again after the reset of the drive?
It should be.
MBR, Sergei
next prev parent reply other threads:[~2007-02-01 13:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-01 9:18 no DRQ after issuing MULTWRITE_EXT ? Steven Scholz
2007-02-01 9:25 ` Eric D. Mudama
2007-02-01 9:30 ` Steven Scholz
2007-02-01 13:06 ` Sergei Shtylyov [this message]
2007-02-01 13:33 ` Steven Scholz
2007-02-01 13:39 ` Sergei Shtylyov
2007-02-01 16:02 ` Steven Scholz
2007-02-01 16:06 ` Sergei Shtylyov
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