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Merge branch 'pci/virtualization'

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- Add ACS quirk for more Zhaoxin Root Ports (LeoLiuoc)

* pci/virtualization:
  PCI: Add ACS quirk for more Zhaoxin Root Ports
This commit is contained in:
Bjorn Helgaas 2024-01-15 12:10:36 -06:00
commit c94df62146
1 changed files with 6 additions and 2 deletions
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8
drivers/pci/quirks.c
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@ -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);
}