Commit e8946a53 authored by Evan Quan's avatar Evan Quan Committed by Bjorn Helgaas
Browse files

PCI: Mark AMD Navi14 GPU ATS as broken 



Observed unexpected GPU hang during runpm stress test on 0x7341 rev 0x00.
Further debugging shows broken ATS is related.

Disable ATS on this part.  Similar issues on other devices:

  a2da5d8c ("PCI: Mark AMD Raven iGPU ATS as broken in some platforms")
  45beb31d ("PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken")
  5e89cd30 ("PCI: Mark AMD Navi14 GPU rev 0xc5 ATS as broken")

Suggested-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20210602021255.939090-1-evan.quan@amd.com


Signed-off-by: default avatarEvan Quan <evan.quan@amd.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: default avatarKrzysztof Wilczyński <kw@linux.com>
Cc: stable@vger.kernel.org
parent ce00322c

drivers/pci/quirks.c

+3 −1
Original line number Diff line number Diff line
@@ -5241,7 +5241,8 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0422, quirk_no_ext_tags); 
static void quirk_amd_harvest_no_ats(struct pci_dev *pdev)

{

	if ((pdev->device == 0x7312 && pdev->revision != 0x00) ||

	    (pdev->device == 0x7340 && pdev->revision != 0xc5))

	    (pdev->device == 0x7340 && pdev->revision != 0xc5) ||

	    (pdev->device == 0x7341 && pdev->revision != 0x00))

		return;



	if (pdev->device == 0x15d8) {
@@ -5268,6 +5269,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_amd_harvest_no_ats); 
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);

DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7341, quirk_amd_harvest_no_ats);

/* AMD Raven platform iGPU */

DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x15d8, quirk_amd_harvest_no_ats);

#endif /* CONFIG_PCI_ATS */