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Merge branch 'pci/virtualization' into next

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* pci/virtualization:
  PCI: Disable VF decoding before pcibios_sriov_disable() updates resources
  PCI: Add ACS quirk for APM X-Gene devices
  PCI: Mark AMD Stoney GPU ATS as broken

Conflicts:
	drivers/pci/quirks.c
This commit is contained in:
Bjorn Helgaas
2017-09-07 13:24:41 -05:00
parent 27e87395ae 0fc690a7c3
commit cf2d804110
2 changed files with 33 additions and 3 deletions
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29
drivers/pci/quirks.c
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@@ -4137,6 +4137,18 @@ static int pci_quirk_cavium_acs(struct pci_dev *dev, u16 acs_flags)
return acs_flags ? 0 : 1;
}
static int pci_quirk_xgene_acs(struct pci_dev *dev, u16 acs_flags)
{
/*
* X-Gene root matching this quirk do not allow peer-to-peer
* transactions with others, allowing masking out these bits as if they
* were unimplemented in the ACS capability.
*/
acs_flags &= ~(PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
return acs_flags ? 0 : 1;
}
/*
* Many Intel PCH root ports do provide ACS-like features to disable peer
* transactions and validate bus numbers in requests, but do not provide an
@@ -4385,6 +4397,8 @@ static const struct pci_dev_acs_enabled {
{ 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */
/* Cavium ThunderX */
{ PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs },
/* APM X-Gene */
{ PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_xgene_acs },
{ 0 }
};
@@ -4680,3 +4694,18 @@ static void quirk_no_ext_tags(struct pci_dev *pdev)
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0140, quirk_no_ext_tags);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0142, quirk_no_ext_tags);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0144, 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.
*/
static void quirk_no_ats(struct pci_dev *pdev)
{
dev_info(&pdev->dev, "disabling ATS (broken on this device)\n");
pdev->ats_cap = 0;
}
/* AMD Stoney platform GPU */
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_no_ats);
#endif /* CONFIG_PCI_ATS */