From: LeoLiu-oc <LeoLiu-oc@zhaoxin.com> mainline inclusion from mainline-5.6.9 commit 0325837c51cb7c9a5bd3e354ac0c0cda0667d50e category: PCI bugzilla: https://bugzilla.openeuler.org/show_bug.cgi?id=19 CVE: NA ---------------------------------------------------------------- Some Zhaoxin endpoints are implemented as multi-function devices without an ACS capability, but they actually don't support peer-to-peer transactions. Add ACS quirks to declare DMA isolation. Link: https://lore.kernel.org/r/20200327091148.5190-3-RaymondPang-oc@zhaoxin.com Signed-off-by: Raymond Pang <RaymondPang-oc@zhaoxin.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: LeoLiu-oc <LeoLiu-oc@zhaoxin.com> Conflicts: drivers/pci/quirks.c [Cheng Jian: adjust context] Signed-off-by: Cheng Jian <cj.chengjian@huawei.com> --- drivers/pci/quirks.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 3366570d7494..cd0405ae83ca 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4616,6 +4616,10 @@ static const struct pci_dev_acs_enabled { { 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 }, + /* Zhaoxin multi-function devices */ + { PCI_VENDOR_ID_ZHAOXIN, 0x3038, pci_quirk_mf_endpoint_acs }, + { PCI_VENDOR_ID_ZHAOXIN, 0x3104, pci_quirk_mf_endpoint_acs }, + { PCI_VENDOR_ID_ZHAOXIN, 0x9083, pci_quirk_mf_endpoint_acs }, { 0 } }; -- 2.25.1