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x86/PCI: VMD: Add quirk for AER to ignore source ID

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VMD root ports change all source ids to the VMD device ID.  To find the
sender of the AER notification, we need to scan all child devices for the
AER sender, rather than relying on the source ID from the message.

Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Jon Derrick 2016-09-06 14:15:24 -05:00 committed by Bjorn Helgaas
parent 032c3d86b4
commit 443b40ba21
1 changed files with 17 additions and 0 deletions
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17
drivers/pci/quirks.c
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@ -4428,3 +4428,20 @@ static void quirk_intel_qat_vf_cap(struct pci_dev *pdev)
}
}
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x443, quirk_intel_qat_vf_cap);
/*
* VMD-enabled root ports will change the source ID for all messages
* to the VMD device. Rather than doing device matching with the source
* ID, the AER driver should traverse the child device tree, reading
* AER registers to find the faulting device.
*/
static void quirk_no_aersid(struct pci_dev *pdev)
{
/* VMD Domain */
if (pdev->bus->sysdata && pci_domain_nr(pdev->bus) >= 0x10000)
pdev->bus->bus_flags |= PCI_BUS_FLAGS_NO_AERSID;
}
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2030, quirk_no_aersid);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2031, quirk_no_aersid);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2032, quirk_no_aersid);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2033, quirk_no_aersid);