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| author | Wei Yang <weiyang@linux.vnet.ibm.com> | 2016-03-04 00:53:11 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-03-08 23:58:23 +0100 |
| commit | 67086e32b56481531ab1292b284e074b1a8d764c (patch) | |
| tree | 67012baf5d2b62c7cc1d0f05600bee2c30f29c9b /arch/powerpc/include/asm/pci-bridge.h | |
| parent | powerpc/powernv: Support PCI config restore for VFs (diff) | |
| download | linux-67086e32b56481531ab1292b284e074b1a8d764c.tar.xz linux-67086e32b56481531ab1292b284e074b1a8d764c.zip | |
powerpc/eeh: powerpc/eeh: Support error recovery for VF PE
PFs are enumerated on PCI bus, while VFs are created by PF's driver.
In EEH recovery, it has two cases:
1. Device and driver is EEH aware, error handlers are called.
2. Device and driver is not EEH aware, un-plug the device and plug it again
by enumerating it.
The special thing happens on the second case. For a PF, we could use the
original pci core to enumerate the bus, while for VF we need to record the
VFs which aer un-plugged then plug it again.
Also The patch caches the VF index in pci_dn, which can be used to
calculate VF's bus, device and function number. Those information helps to
locate the VF's PCI device instance when doing hotplug during EEH recovery
if necessary.
Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Acked-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/pci-bridge.h')
| -rw-r--r-- | arch/powerpc/include/asm/pci-bridge.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h index f4d17587fa31..9f165e8a77bf 100644 --- a/arch/powerpc/include/asm/pci-bridge.h +++ b/arch/powerpc/include/asm/pci-bridge.h @@ -212,6 +212,7 @@ struct pci_dn { #define IODA_INVALID_PE (-1) #ifdef CONFIG_PPC_POWERNV int pe_number; + int vf_index; /* VF index in the PF */ #ifdef CONFIG_PCI_IOV u16 vfs_expanded; /* number of VFs IOV BAR expanded */ u16 num_vfs; /* number of VFs enabled*/ |