PCI: Add ACS quirk for Emulex NICs
As Skyhawk and BE3-R (both multi-function devices) don't advertise the
PCI-ACS capability, the vfio driver places all the functions of these
devices in a single IOMMU group. Attaching (via PCI-passthru) two
different Skyhawk/BE3-R partitions (nPAR, Flex, etc. PFs) using vfio, to
different guests doesn't work as vfio only allows functions in *different*
IOMMU groups to be assigned to different guests.
As peer-to-peer access between PFs in Skyhawk/BE3-R is not possible, we can
treat them as "fully isolated" even though the device doesn't advertise
ACS. Add a PCI quirk for Skyhawk and BE3-R chips to fix this problem.
Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 31e7972..3fb378aa 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -3748,6 +3748,8 @@
{ PCI_VENDOR_ID_INTEL, 0x1551, pci_quirk_mf_endpoint_acs },
{ PCI_VENDOR_ID_INTEL, 0x1558, pci_quirk_mf_endpoint_acs },
{ PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs },
+ { 0x19a2, 0x710, pci_quirk_mf_endpoint_acs }, /* Emulex BE3-R */
+ { 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */
{ 0 }
};