Messages in this thread Patch in this message | | | From | Daniel Ritz <> | Subject | Re: [PATCH] cardbus: revert IO window limit | Date | Sat, 1 Jul 2006 00:03:30 +0200 |
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> Ok. We don't actually have any quirks at all for the 82440MX, and that's > almost certainly _not_ because it doesn't do something strange (all Intel > host bridges have magic IO ranges), but simply because we haven't hit it > yet. > > And I can't find the docs for the PCI config space for that dang thing. > > I bet that there's some magic SMBus IO-range that the 440MX decodes using > a special magic config setting. > > Has anybody found the config space docs for the 82440MX?
nope. but from the docs available i would _guess_ this thing is really similar to the 82443BX/82371AB combination. at least the SMBus base address register is hidden at the very same place (32bit at 0x90 in function 3 of the "south" brigde)...so the attached little patch might be enough to fix things...
Alessio, could you try that one on top of a kernel that shows the problem?
rgds -daniel
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 4364d79..1d26a64 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -401,6 +401,8 @@ static void __devinit quirk_piix4_acpi(s piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi ); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi ); + /* * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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