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    Subject[PATCH 5.8 009/232] PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken
    Date
    From: Kai-Heng Feng <kai.heng.feng@canonical.com>

    commit 45beb31d3afb651bb5c41897e46bd4fa9980c51c upstream.

    We are seeing AMD Radeon Pro W5700 doesn't work when IOMMU is enabled:

    iommu ivhd0: AMD-Vi: Event logged [IOTLB_INV_TIMEOUT device=63:00.0 address=0x42b5b01a0]
    iommu ivhd0: AMD-Vi: Event logged [IOTLB_INV_TIMEOUT device=63:00.0 address=0x42b5b01c0]

    The error also makes graphics driver fail to probe the device.

    It appears to be the same issue as commit 5e89cd303e3a ("PCI: Mark AMD
    Navi14 GPU rev 0xc5 ATS as broken") addresses, and indeed the same ATS
    quirk can workaround the issue.

    See-also: 5e89cd303e3a ("PCI: Mark AMD Navi14 GPU rev 0xc5 ATS as broken")
    See-also: d28ca864c493 ("PCI: Mark AMD Stoney Radeon R7 GPU ATS as broken")
    See-also: 9b44b0b09dec ("PCI: Mark AMD Stoney GPU ATS as broken")
    Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=208725
    Link: https://lore.kernel.org/r/20200728104554.28927-1-kai.heng.feng@canonical.com
    Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
    Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
    Acked-by: Alex Deucher <alexander.deucher@amd.com>
    Cc: stable@vger.kernel.org
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/pci/quirks.c | 5 ++++-
    1 file changed, 4 insertions(+), 1 deletion(-)

    --- a/drivers/pci/quirks.c
    +++ b/drivers/pci/quirks.c
    @@ -5207,7 +5207,8 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SE
    */
    static void quirk_amd_harvest_no_ats(struct pci_dev *pdev)
    {
    - if (pdev->device == 0x7340 && pdev->revision != 0xc5)
    + if ((pdev->device == 0x7312 && pdev->revision != 0x00) ||
    + (pdev->device == 0x7340 && pdev->revision != 0xc5))
    return;

    pci_info(pdev, "disabling ATS\n");
    @@ -5218,6 +5219,8 @@ static void quirk_amd_harvest_no_ats(str
    DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_amd_harvest_no_ats);
    /* AMD Iceland dGPU */
    DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_amd_harvest_no_ats);
    +/* AMD Navi10 dGPU */
    +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7312, quirk_amd_harvest_no_ats);
    /* AMD Navi14 dGPU */
    DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7340, quirk_amd_harvest_no_ats);
    #endif /* CONFIG_PCI_ATS */

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