From: Jon Derrick Date: Tue, 6 Sep 2016 19:15:24 +0000 (-0500) Subject: x86/PCI: VMD: Add quirk for AER to ignore source ID X-Git-Tag: v4.9-rc1~32^2~12^2~7 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=443b40ba21aa346388ddfb8fa7f2baee6b74e8ee;p=platform%2Fkernel%2Flinux-amlogic.git x86/PCI: VMD: Add quirk for AER to ignore source ID 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 Signed-off-by: Bjorn Helgaas --- diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 37ff015..6297942 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -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);