From: Tejun Heo <htejun@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Parag Warudkar <parag.warudkar@gmail.com>,
linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org,
Tom Lanyon <tomlanyon@gmail.com>
Subject: Re: Failure with SATA DVD-RW
Date: Mon, 10 Dec 2007 18:45:16 +0900 [thread overview]
Message-ID: <475D0AAC.3030408@gmail.com> (raw)
In-Reply-To: <20071206164043.589290f4.akpm@linux-foundation.org>
Andrew Morton wrote:
> (argh, shit, resent. Please don't massage the cc list. Do reply-to-all)
>
> On Thu, 6 Dec 2007 01:33:16 +0000 (UTC)
> Parag Warudkar <parag.warudkar@gmail.com> wrote:
>
>> Tom Lanyon <tomlanyon <at> gmail.com> writes:
>>
>>> scsi4: ahci
>>> ata5: SATA link up at 1.5 Gbps (SStatus 113 SControl 300)
>>> ata5.00: ATAPI, max UDMA/66
>>> ata5.00: qc timeout (cmd 0xef)
>>> ata5.00: failed to set xfermode (err_mask=0x104)
>>> ata5.00: limiting speed to UDMA/44
>>> ata5: failed to recover some devices, retrying in 5 secs
>>> ata5: port is slow to respond, please be patient (Status 0x80)
>>> ata5: port failed to respond (30 secs, status 0x80)
>>> ata5: COMRESET failed (device not ready)
>>> ata5: hardreset failed, retrying in 5 secs
>>> ata5: SATA link up at 1.5 Gbps (SStatus 113 SControl 300)
>>> ata5.00: ATAPI, max UDMA/66
>>> ata5.00: qc timeout (cmd 0xef)
>>> ata5.00: failed to set xfermode (err_mask=0x104)
>>> ata5.00: limiting speed to PIO0
>>> ata5: failed to recover some devices, retrying in 5 secs
>>> ata5: port is slow to respond, please be patient (Status 0x80)
>>> ata5: port failed to respond (30 secs, status 0x80)
>>> ata5: COMRESET failed (device not ready)
>>> ata5: hardreset failed, retrying in 5 secs
>>> ata5.00: ATAPI, max UDMA/66
>>> ata5.00: qc timeout (cmd 0xef)
>>> ata5.00: failed to set xfermode (err_mask=0x104)
>>> ata5.00: disabled
>>>
>> Looks like it is trying to set transfer mode to UDMA/66 and failing. After
>> that it tried UDMA/44 and failed again. Next UDMA/66 again with unsurprising
>> result - failed. After that PIO0 which seems to cause some kind of trouble,
>> then it tries UDMA/66 again, and I am not stating the result again :) !
>>
>>> Any ideas what to try to get it working under AHCI?
>>>
>> I recall reading somewhere - the Pioneer drive needs UDMA/33 which it did not
>> try in your case - need to some how have it try UDMA/33 but I don't find a
>> boot parameter which will do that. So may be adding a quirk for this device to
>> limit the xfer mode to 33 may work.
>>
>> What does your dmesg output for the drives look like when you run in IDE
>> compat mode? (Particularly the DMA for this drive?)
>>
Also, does irqpoll help?
--
tejun
next prev parent reply other threads:[~2007-12-10 9:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-05 0:08 Failure with SATA DVD-RW Tom Lanyon
2007-12-06 1:33 ` Parag Warudkar
2007-12-07 0:39 ` Andrew Morton
2007-12-07 0:40 ` Andrew Morton
2007-12-10 9:45 ` Tejun Heo [this message]
2007-12-07 2:12 ` Jeff Garzik
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