Date: Fri, 12 Mar 2010 09:09:36 -0800 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Pierre Beyssac <pb@freebsd.org> Cc: mav@freebsd.org, freebsd-stable@freebsd.org Subject: Re: (fixed) Re: 8-STABLE interrupt storm on atapci(?), Dell Inspiron 580 Message-ID: <20100312170936.GA59343@icarus.home.lan> In-Reply-To: <20100312165744.GA86971@fasterix.frmug.org> References: <20100312121409.GA79294@fasterix.frmug.org> <20100312131832.GA54731@icarus.home.lan> <20100312165744.GA86971@fasterix.frmug.org>
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On Fri, Mar 12, 2010 at 05:57:44PM +0100, Pierre Beyssac wrote:
> > Possibly this is the source of the problem (specifically, it looks like
> > FreeBSD doesn't have proper device ID knowledge of what this controller
> > is. I believe that's because this system is *very* new, a Core i3/i5/i7
> > system)?
>
> I didn't notice that, you're right! The system is brand new, got
> it delivered on Tuesday. Another odd thing is that the controllers
> have differents IDs, 0x3b208086 vs 0x3b268086.
>
> I added the IDs to ata-intel.c and it fixes the problem.
>
> Preparing a patch. Thanks for the hint!
> --
> Pierre Beyssac pb@fasterix.frmug.org
> --- ata-intel.c.orig 2010-03-12 17:02:00.680011011 +0100
> +++ ata-intel.c 2010-03-12 16:55:54.773702505 +0100
> @@ -156,6 +156,8 @@
> { 0x3a2d8086, 0, INTEL_AHCI, 0, ATA_SA300, "PCH" },
> { 0x3a2e8086, 0, INTEL_AHCI, 0, ATA_SA300, "PCH" },
> { 0x3a2f8086, 0, INTEL_AHCI, 0, ATA_SA300, "PCH" },
> + { 0x3b208086, 0, INTEL_AHCI, 0, ATA_SA300, "PCH" },
> + { 0x3b268086, 0, INTEL_AHCI, 0, ATA_SA300, "PCH" },
> { ATA_I31244, 0, 0, 2, ATA_SA150, "31244" },
> { ATA_ISCH, 0, 0, 1, ATA_UDMA5, "SCH" },
> { 0, 0, 0, 0, 0, 0}};
I had a chance to review the Intel 5 Series and 3400 Series Chipset
document, which is specific to the PCH. The breakdown for those
two Device IDs, under Vendor ID 0x8086 (Intel), is:
Device ID 0x3b20
- PCH SATA controller
- Desktop revision, non-AHCI and non-RAID Mode
- Ports 0,1,2,3
Device ID 0x3b26
- PCH SATA controller
- Desktop revision, non-AHCI and non-RAID mode
- Ports 4,5
So I'm not sure the setting of the INTEL_AHCI flag there is correct
for these controllers. mav@ will need to chime in here.
Regarding the "dual device IDs": what this means is that ports 0-3 are
tied to one device on the PCI bus, and ports 4-5 are tied to another
device on the PCI bus. They might have chosen to do this so they could
segregate which ports do what or operate differently somehow.
mav@ may also want to review the specification since it mentions a bunch
of other Device IDs which don't appear to be in the above list:
http://www.intel.com/Assets/PDF/specupdate/322170.pdf
--
| 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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