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Date: Fri, 12 Mar 2010 20:27:59 +0100
From: Pierre Beyssac <pb@freebsd.org>
To: Alexander Motin <mav@freebsd.org>
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Cc: freebsd-stable@freebsd.org, Jeremy Chadwick <freebsd@jdc.parodius.com>
Subject: Re: (fixed) Re: 8-STABLE interrupt storm on atapci(?),
	Dell Inspiron 580
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On Fri, Mar 12, 2010 at 08:59:32PM +0200, Alexander Motin wrote:
> Except ICH6 Intel uses separate IDs for AHCI and non-AHCI SATA
> controller modes. So this flag is not completely correct. But probably
> it shoudn't be just removed, as it is checked in other place. I know
> about this and going to handle it later. It's not a problem now.

I was wondering exactly about that given the wording of the Intel
document sent by Jeremy...

> > http://www.intel.com/Assets/PDF/specupdate/322170.pdf
> Thanks.
> PS: Check BIOS settings for enabling AHCI mode.

Problem is, I can't find any setting to do that, either it's not
there or it's well hidden. The BIOS is up-to-date. Could it be
possible for Dell to lock the chip in non-AHCI mode?
-- 
Pierre Beyssac	      	    		pb@fasterix.frmug.org