Date: Thu, 27 Nov 2008 08:42:10 +0300 From: "Andrey V. Elsukov" <bu7cher@yandex.ru> To: Victor Balada Diaz <victor@bsdes.net> Cc: stable@FreeBSD.org, =?UTF-8?B?U8O4cmVuIFNjaG1pZHQ=?= <sos@FreeBSD.org> Subject: Re: IXP SB600 SATA missing quirk? Message-ID: <492E3332.1090907@yandex.ru> In-Reply-To: <20081126184135.GC22211@alf.bsdes.net> References: <20081126184135.GC22211@alf.bsdes.net>
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Victor Balada Diaz wrote: > i'm trying FreeBSD 7.1 BETA2 in amd64 and i'm having issues with interrupt > storms. The machine works without problems as long as i don't stress much > the HD. If i have high IO load after a few hours the system starts to have > interrupt storms and never again recovers from them until i restart. > > My SATA card is: > > atapci0@pci0:0:18:0: class=0x01018f card=0x73271462 chip=0x43801002 rev=0x00 hdr=0x00 > vendor = 'ATI Technologies Inc' > device = 'IXP SB600 Serial ATA Controller' > class = mass storage > subclass = ATA > > The MotherBoard is MSI K9AG Neo 2[1] and the kernel is > GENERIC without USB and firewire support. > > After digging a bit in the source i've find that linux > people have a quirk for this chipset and i've been unable > to find in our code a similar quirk. You can find the quirk > here: > > http://fxr.watson.org/fxr/source/drivers/pci/quirks.c?v=linux-2.6#L870 > > I don't know exactly what does it do, neither i do know > if it have anything to know with my interrupt issues, but > could someone who knows a bit better tell me if that > could fix the issue or if we need that quirk for other > purposes? It seems this quirk only changes PCIR_PROGIF and PCIR_SUBCLASS registers to PCIP_STORAGE_SATA_AHCI_1_0 and PCIS_STORAGE_SATA values. I don't know which magic these changes should do, but I think they aren't needed. Your controller should work in AHCI mode without this quirk. -- WBR, Andrey V. Elsukov
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