Date: Fri, 12 Mar 2010 12:01:50 -0800 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Pierre Beyssac <pb@freebsd.org> Cc: Alexander Motin <mav@freebsd.org>, freebsd-stable@freebsd.org Subject: Re: (fixed) Re: 8-STABLE interrupt storm on atapci(?), Dell Inspiron 580 Message-ID: <20100312200150.GA62481@icarus.home.lan> In-Reply-To: <20100312192759.GA91317@fasterix.frmug.org> References: <20100312121409.GA79294@fasterix.frmug.org> <20100312131832.GA54731@icarus.home.lan> <20100312165744.GA86971@fasterix.frmug.org> <20100312170936.GA59343@icarus.home.lan> <4B9A8F14.4030907@FreeBSD.org> <20100312192759.GA91317@fasterix.frmug.org>
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On Fri, Mar 12, 2010 at 08:27:59PM +0100, Pierre Beyssac wrote: > 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? The system uses the Intel H57 (Ibex) chipset, which is documented here: http://www.intel.com/Products/Desktop/Chipsets/H57/h57-overview.htm The official datasheet is here (~4.4MBytes): http://www.intel.com/Assets/PDF/datasheet/322169.pdf Which does state AHCI is available, however Intel is known for making separate SKUs (revisions/models with different tweaks to the chips) that support different features. Table 1.3 on the PDF outlines what the H57 is capable of: Intel 5 Series Chipset SKUs (Desktop) SKU Name AHCI RAID 0/1/5/10 Support ----------------------------------------- Q57 Yes Yes H57 Yes Yes <==== H55 Yes No P55 Yes Yes ----------------------------------------- Intel 3400 Series Chipset SKUs (Server) SKU Name AHCI RAID 0/1/5/10 Support ----------------------------------------- 3400 No No 3420 Yes Yes 3450 Yes Yes ----------------------------------------- Further within the documentation, it states that for eSATA hot-plug to work, AHCI has to be enabled/in use. That's about all I can discern from the PDF without getting into technical specifics. -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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