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| author | Vasundhara Volam <vasundhara.volam@emulex.com> | 2015-01-13 01:22:23 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2015-01-16 10:27:29 -0600 |
| commit | 6a3763d1734bf133330dc8e246bf794b9e360e8a (patch) | |
| tree | 4c3690588a9c3bc226f6a2504d347acc25ed5453 /drivers/pci | |
| parent | d84f31744643e2c439466d513ebc1bc81c4d9186 (diff) | |
| download | linux-6a3763d1734bf133330dc8e246bf794b9e360e8a.tar.gz linux-6a3763d1734bf133330dc8e246bf794b9e360e8a.tar.bz2 linux-6a3763d1734bf133330dc8e246bf794b9e360e8a.zip | |
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>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/quirks.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 31e7972ca1b5..3fb378aa7c53 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3748,6 +3748,8 @@ static const struct pci_dev_acs_enabled { { 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 } }; |