[PATCH] PCI: Add ACS quirk for Cavium multi-function devices
From: George Cherian <hidden>
Date: 2021-08-10 12:24:41
Also in:
lkml
Subsystem:
pci subsystem, the rest · Maintainers:
Bjorn Helgaas, Linus Torvalds
Some Cavium endpoints are implemented as multi-function devices without ACS capability, but they actually don't support peer-to-peer transactions. Add ACS quirks to declare DMA isolation. Apply te quirk for following devices 1. BGX device found on Octeon-TX (8xxx) 2. CGX device found on Octeon-TX2 (9xxx) 3. RPM device found on Octeon-TX3 (10xxx) Signed-off-by: George Cherian <redacted> --- drivers/pci/quirks.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 6d74386eadc2..076932018494 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c@@ -4840,6 +4840,10 @@ static const struct pci_dev_acs_enabled { { 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */ /* Cavium ThunderX */ { PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs }, + /* Cavium multi-function devices */ + { PCI_VENDOR_ID_CAVIUM, 0xA026, pci_quirk_mf_endpoint_acs }, + { PCI_VENDOR_ID_CAVIUM, 0xA059, pci_quirk_mf_endpoint_acs }, + { PCI_VENDOR_ID_CAVIUM, 0xA060, pci_quirk_mf_endpoint_acs }, /* APM X-Gene */ { PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_xgene_acs }, /* Ampere Computing */
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2.25.1