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authorFeng Kan <fkan@apm.com>2018-02-21 06:19:27 +0300
committerBjorn Helgaas <helgaas@kernel.org>2018-02-23 02:47:31 +0300
commit4ef76ad0462cf25ce948541c8724eaa8a8365e1d (patch)
treee811283472eac1aaf1b3d5dbd2208b66eb6eb4c5 /include/linux/pci_ids.h
parent204f4afa7ae50239c39adb13af42f5720fe7e9a5 (diff)
downloadlinux-4ef76ad0462cf25ce948541c8724eaa8a8365e1d.tar.xz
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 'include/linux/pci_ids.h')
-rw-r--r--include/linux/pci_ids.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index a6b30667a331..c875d4223f44 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1333,6 +1333,7 @@
#define PCI_DEVICE_ID_IMS_TT3D 0x9135
#define PCI_VENDOR_ID_AMCC 0x10e8
+#define PCI_VENDOR_ID_AMPERE 0x1def
#define PCI_VENDOR_ID_INTERG 0x10ea
#define PCI_DEVICE_ID_INTERG_1682 0x1682