PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken
authorKai-Heng Feng <kai.heng.feng@canonical.com>
Tue, 28 Jul 2020 10:45:53 +0000 (18:45 +0800)
committerBjorn Helgaas <bhelgaas@google.com>
Wed, 29 Jul 2020 19:53:39 +0000 (14:53 -0500)
commit45beb31d3afb651bb5c41897e46bd4fa9980c51c
treed7903158b4de905c1d73202800e3d9651cb09af7
parent3f9a7a13fe4cb6e119e4e4745fbf975d30bfac9b
PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken

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
drivers/pci/quirks.c