summaryrefslogtreecommitdiffstats
path: root/drivers/pci/quirks.c
diff options
context:
space:
mode:
authorFeng Kan <fkan@apm.com>2018-02-20 19:19:27 -0800
committerBjorn Helgaas <helgaas@kernel.org>2018-02-22 17:47:31 -0600
commit4ef76ad0462cf25ce948541c8724eaa8a8365e1d (patch)
treee811283472eac1aaf1b3d5dbd2208b66eb6eb4c5 /drivers/pci/quirks.c
parent204f4afa7ae50239c39adb13af42f5720fe7e9a5 (diff)
downloadlinux-4ef76ad0462cf25ce948541c8724eaa8a8365e1d.tar.bz2
PCI: Add ACS quirk for Ampere root ports
The Ampere Computing PCIe root port does not support ACS at this point. However, the hardware provides isolation and source validation through the SMMU. The stream ID generated by the PCIe ports contain both the bus/device/function number as well as the port ID in its 3 most significant bits. Turn on ACS but disable all the peer-to-peer features. APM is being rebranded to Ampere. The Vendor and Device IDs change, but the functionality stays the same. Signed-off-by: Feng Kan <fkan@apm.com> Signed-off-by: Bjorn Helgaas <helgaas@kernel.org>
Diffstat (limited to 'drivers/pci/quirks.c')
-rw-r--r--drivers/pci/quirks.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index fc734014206f..57748a3b83f0 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -4514,6 +4514,15 @@ static const struct pci_dev_acs_enabled {
{ PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs },
/* APM X-Gene */
{ PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_xgene_acs },
+ /* Ampere Computing */
+ { PCI_VENDOR_ID_AMPERE, 0xE005, pci_quirk_xgene_acs },
+ { PCI_VENDOR_ID_AMPERE, 0xE006, pci_quirk_xgene_acs },
+ { PCI_VENDOR_ID_AMPERE, 0xE007, pci_quirk_xgene_acs },
+ { PCI_VENDOR_ID_AMPERE, 0xE008, pci_quirk_xgene_acs },
+ { PCI_VENDOR_ID_AMPERE, 0xE009, pci_quirk_xgene_acs },
+ { PCI_VENDOR_ID_AMPERE, 0xE00A, pci_quirk_xgene_acs },
+ { PCI_VENDOR_ID_AMPERE, 0xE00B, pci_quirk_xgene_acs },
+ { PCI_VENDOR_ID_AMPERE, 0xE00C, pci_quirk_xgene_acs },
{ 0 }
};