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PCI: Add ACS quirk for more Zhaoxin Root Ports

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commit e367e3c765f5477b2e79da0f1399aed49e2d1e37 upstream.

Add more Root Port Device IDs to pci_quirk_zhaoxin_pcie_ports_acs() for
some new Zhaoxin platforms.

Fixes: 299bd044a6 ("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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
LeoLiuoc 2023-12-11 17:15:43 +08:00 committed by Greg Kroah-Hartman
parent 41e3e3d813
commit d08e756e25
1 changed files with 6 additions and 2 deletions
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8
drivers/pci/quirks.c
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@ -4602,17 +4602,21 @@ 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);
}