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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-23 11:08:15 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-23 11:08:15 -0800 |
| commit | a572582b1a4d6c8418739abfdfa5d1796d148d35 (patch) | |
| tree | 9b0a386f072e29fa82d7d6ca5ea3666135af9504 /drivers | |
| parent | readdir: make user_access_begin() use the real access range (diff) | |
| parent | PCI: Mark AMD Navi14 GPU rev 0xc5 ATS as broken (diff) | |
| download | linux-dev-a572582b1a4d6c8418739abfdfa5d1796d148d35.tar.xz linux-dev-a572582b1a4d6c8418739abfdfa5d1796d148d35.zip | |
Merge tag 'pci-v5.5-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fix from Bjorn Helgaas:
"Mark ATS as broken on AMD Navi14 GPU rev 0xc5 (Alex Deucher)"
* tag 'pci-v5.5-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: Mark AMD Navi14 GPU rev 0xc5 ATS as broken
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/quirks.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 4937a088d7d8..fbeb9f73ef28 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -5074,18 +5074,25 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0422, quirk_no_ext_tags); #ifdef CONFIG_PCI_ATS /* - * Some devices have a broken ATS implementation causing IOMMU stalls. - * Don't use ATS for those devices. + * Some devices require additional driver setup to enable ATS. Don't use + * ATS for those devices as ATS will be enabled before the driver has had a + * chance to load and configure the device. */ -static void quirk_no_ats(struct pci_dev *pdev) +static void quirk_amd_harvest_no_ats(struct pci_dev *pdev) { - pci_info(pdev, "disabling ATS (broken on this device)\n"); + if (pdev->device == 0x7340 && pdev->revision != 0xc5) + return; + + pci_info(pdev, "disabling ATS\n"); pdev->ats_cap = 0; } /* AMD Stoney platform GPU */ -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_no_ats); -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_no_ats); +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 Navi14 dGPU */ +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7340, quirk_amd_harvest_no_ats); #endif /* CONFIG_PCI_ATS */ /* Freescale PCIe doesn't support MSI in RC mode */ |