linux-kernel - Re: ICH8 CF timeout (regression)...

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Date:	Thu, 2 Aug 2007 22:11:52 +0100
From:	"Daniel J Blueman" <daniel.blueman@...il.com>
To:	"Tejun Heo" <htejun@...il.com>
Cc:	jgarzik@...ox.com, linux-ide@...r.kernel.org,
	"Linux Kernel" <linux-kernel@...r.kernel.org>
Subject: Re: ICH8 CF timeout (regression)...

On 02/08/07, Tejun Heo <htejun@...il.com> wrote:
> Daniel J Blueman wrote:
> > I'll grab kernel logs from the legacy ATA boot; what else can help
> > debug this issue? No problem testing patches too.
>
> Yeap, please post the old log.

Not much actually - perhaps I need to enable some debugging:

Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
hdc: SanDisk SDCFX-4096, CFA DISK drive
ide1 at 0x170-0x177,0x376 on irq 15
hdc: max request size: 128KiB
hdc: 8027712 sectors (4110 MB) w/1KiB Cache, CHS=7964/16/63
 hdc: hdc1 hdc2 hdc3

> > --- [2]
> > ata2.00: limiting speed to UDMA/33:PIO4
> > ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
> > ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 cdb 0x0 data 4096 in
> >          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
> > ata2: soft resetting port
> > ata2.00: configured for UDMA/33
> > ata2: EH complete
>
> What happens after this?

More EH occurs - I've left it for ~5 mins, but let me know if longer
would give more information, eg if it converges on a lower speed.

Would it be useful to compare some of the port setup registers in the
working and non-working cases? Or any other debug I can grab?
-- 
Daniel J Blueman
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