diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2024-01-15 12:10:36 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2024-01-15 12:10:36 -0600 |
| commit | c94df6214681da71c32268771fa89540de423567 (patch) | |
| tree | 1de4bb3ad59206ba21f6504d0ec7461c3e80abd3 /drivers/pci | |
| parent | d6f5bcc2d098b5900fc288429499d6a7e650717f (diff) | |
| parent | e367e3c765f5477b2e79da0f1399aed49e2d1e37 (diff) | |
Merge branch 'pci/virtualization'
- Add ACS quirk for more Zhaoxin Root Ports (LeoLiuoc)
* pci/virtualization:
PCI: Add ACS quirk for more Zhaoxin Root Ports
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/quirks.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 248d051ec7fa..e4bf0ed46393 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4709,17 +4709,21 @@ static int pci_quirk_xgene_acs(struct pci_dev *dev, u16 acs_flags) * But the implementation could block peer-to-peer transactions between them * and provide ACS-like functionality. */ -static int pci_quirk_zhaoxin_pcie_ports_acs(struct pci_dev *dev, u16 acs_flags) +static int pci_quirk_zhaoxin_pcie_ports_acs(struct pci_dev *dev, u16 acs_flags) { if (!pci_is_pcie(dev) || ((pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) && (pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM))) return -ENOTTY; + /* + * Future Zhaoxin Root Ports and Switch Downstream Ports will + * implement ACS capability in accordance with the PCIe Spec. + */ switch (dev->device) { case 0x0710 ... 0x071e: case 0x0721: - case 0x0723 ... 0x0732: + case 0x0723 ... 0x0752: return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); } |