From: Ajit Khaparde ajit.khaparde@broadcom.com
[ Upstream commit 524e057b2d66b61f9b63b6db30467ab7b0bb4796 ]
The Broadcom BCM5760X 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 ok 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.
[kwilczynski: commit log] Link: https://lore.kernel.org/linux-pci/20240510204228.73435-1-ajit.khaparde@broad... Signed-off-by: Ajit Khaparde ajit.khaparde@broadcom.com Signed-off-by: Krzysztof Wilczyński kwilczynski@kernel.org Signed-off-by: Bjorn Helgaas bhelgaas@google.com Reviewed-by: Andy Gospodarek gospo@broadcom.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/quirks.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 4d4267105cd2b..842e8fecf0a9a 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4971,6 +4971,10 @@ static const struct pci_dev_acs_enabled { { PCI_VENDOR_ID_BROADCOM, 0x1750, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_BROADCOM, 0x1751, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_BROADCOM, 0x1752, pci_quirk_mf_endpoint_acs }, + { PCI_VENDOR_ID_BROADCOM, 0x1760, pci_quirk_mf_endpoint_acs }, + { PCI_VENDOR_ID_BROADCOM, 0x1761, pci_quirk_mf_endpoint_acs }, + { PCI_VENDOR_ID_BROADCOM, 0x1762, pci_quirk_mf_endpoint_acs }, + { PCI_VENDOR_ID_BROADCOM, 0x1763, 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 },