From: Raymond Pang RaymondPang-oc@zhaoxin.com
commit 0325837c51cb7c9a5bd3e354ac0c0cda0667d50e upstream.
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: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/pci/quirks.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4759,6 +4759,10 @@ static const struct pci_dev_acs_enabled { PCI_VENDOR_ID_BROADCOM, 0xD714, pci_quirk_brcm_acs }, /* Amazon Annapurna Labs */ { PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031, pci_quirk_al_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 } };