linux-kernel - RE: SATA DOM is not identified by ata

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Date:	Fri, 18 Jan 2008 14:11:48 +0800
From:	"Mao Rui" <maorui@...ad.com>
To:	"'Alan Cox'" <alan@...rguk.ukuu.org.uk>
Cc:	<linux-kernel@...r.kernel.org>
Subject: RE: SATA DOM is not identified by ata_piix module

I tried to nail down when the problem was introduced. I compiled some
official kernel release. Here is the result.
2.6.17.14   IDE -- Failed   SATA -- passed
2.6.18   IDE -- Failed   SATA -- failed
2.6.18.8   IDE -- Failed   SATA -- failed
2.6.24-rc7-git6  IDE -- passed   SATA DOM -- failed
linux-2.6.24-rc8-git1   IDE -- passed    SATA -- failed
All IDE failed reason is xfermode error, and all SATA failure is IDENTIFY
error.

As you can find out, the failure of SATA DOM was introduced from kernel
2.6.18.

I'm not good at low level driver programming, so I cannot find out the root
cause by myself. But if Alan or someone else needs more info or wants to
test the patch, I'm glad to do it in my platform.

Best regards,
Mao Rui

> -----Original Message-----
> From: Alan Cox [mailto:alan@...rguk.ukuu.org.uk]
> Sent: Tuesday, January 15, 2008 7:02 PM
> To: Mao Rui
> Cc: linux-kernel@...r.kernel.org
> Subject: Re: SATA DOM is not identified by ata_piix module
> 
> On Tue, 15 Jan 2008 18:11:25 +0800
> "Mao Rui" <maorui@...ad.com> wrote:
> 
> > Hi,
> >
> > I have a PQI Turbo SATA DOM. It works well under Windows. I installed it
in
> > a SuperMicro motherboard, Intel 5000P chipset. The OS is Ubuntu 7.04,
kernel
> > 2.6.20-15. But the DOM is not appeared as a device node, and I found
several
> > error messages in kernel log.
> 
> Generally it is a good idea to report problems with vendor built kernels
> to the vendor and their support, especially one that is 3 releases behind.
> They have a much better idea what is in that kernel and who else has seen
> problems.
> 
> > [   67.124299] ata2.00: qc timeout (cmd 0x91)
> > [   67.124306] ata2.00: failed to IDENTIFY (INIT_DEV_PARAMS failed,
> > err_mask=0x4)
> 
> We issued commands, it didn't respond. That could be a libata problem but
> actually looks more like an IRQ routing problem.
> 
> > Actually I also have a PQI IDE DOM, it have same error with Ubuntu 7.04
/
> 
> The PQI DOM is a bit odd, it is however known to work with libata at
> least for the PATA one, and the versions which don't understand
> SET_XFER_MODE to work with current kernels. (Your failure mode isn't the
> SET_XFER_MODE one - it hasn't got that far).
> 
> Alan


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