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authorSriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>2021-05-21 21:13:17 -0400
committerBjorn Helgaas <bhelgaas@google.com>2021-06-18 10:32:35 -0500
commitdb2f77e2bd99dbd2fb23ddde58f0fae392fe3338 (patch)
treed8e9b5164a7a3567b900b9cdeca10abbeac71d67
parente8946a53e2a698c148b3b3ed732f43c7747fbeb6 (diff)
PCI: Add ACS quirk for Broadcom BCM57414 NIC
The Broadcom BCM57414 NIC may be a multi-function device. While it does not advertise an ACS capability, peer-to-peer transactions are not possible between the individual functions, so it is safe to treat them as fully isolated. Add an ACS quirk for this device so the functions can be in independent IOMMU groups and attached individually to userspace applications using VFIO. [bhelgaas: commit log] Link: https://lore.kernel.org/r/1621645997-16251-1-git-send-email-michael.chan@broadcom.com Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: stable@vger.kernel.org
-rw-r--r--drivers/pci/quirks.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 877ce61619ca..22b2bb1109c9 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -4840,6 +4840,8 @@ 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 },
+ /* Broadcom multi-function device */
+ { PCI_VENDOR_ID_BROADCOM, 0x16D7, pci_quirk_mf_endpoint_acs },
{ PCI_VENDOR_ID_BROADCOM, 0xD714, pci_quirk_brcm_acs },
/* Amazon Annapurna Labs */
{ PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031, pci_quirk_al_acs },