diff options
| author | LeoLiuoc <LeoLiu-oc@zhaoxin.com> | 2023-12-11 17:15:43 +0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2023-12-11 14:05:32 -0600 |
| commit | e367e3c765f5477b2e79da0f1399aed49e2d1e37 (patch) | |
| tree | e1edcebd83e58a362113a8854aa065b8ba942907 /drivers/pci | |
| parent | b85ea95d086471afb4ad062012a4d73cd328fa86 (diff) | |
| download | linux-e367e3c765f5477b2e79da0f1399aed49e2d1e37.tar.gz | |
PCI: Add ACS quirk for more Zhaoxin Root Ports
Add more Root Port Device IDs to pci_quirk_zhaoxin_pcie_ports_acs() for
some new Zhaoxin platforms.
Fixes: 299bd044a6f3 ("PCI: Add ACS quirk for Zhaoxin Root/Downstream Ports")
Link: https://lore.kernel.org/r/20231211091543.735903-1-LeoLiu-oc@zhaoxin.com
Signed-off-by: LeoLiuoc <LeoLiu-oc@zhaoxin.com>
[bhelgaas: update subject, drop changelog, add Fixes, add stable tag, fix
whitespace, wrap code comment]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: <stable@vger.kernel.org> # 5.7
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 ea476252280abb..d55a3ffae4b8b1 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4699,17 +4699,21 @@ 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); } |