diff options
| author | Wei Yang <weiyang@linux.vnet.ibm.com> | 2016-03-04 10:53:11 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-03-09 09:58:23 +1100 |
| commit | 67086e32b56481531ab1292b284e074b1a8d764c (patch) | |
| tree | 67012baf5d2b62c7cc1d0f05600bee2c30f29c9b /arch/powerpc/kernel/eeh.c | |
| parent | 0dc2830e0a48d520c7db7cc55dbbd0edefac02f5 (diff) | |
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/kernel/eeh.c')
| -rw-r--r-- | arch/powerpc/kernel/eeh.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index 0d724625662f..b7338a9426df 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -1246,6 +1246,14 @@ void eeh_remove_device(struct pci_dev *dev) * from the parent PE during the BAR resotre. */ edev->pdev = NULL; + + /* + * The flag "in_error" is used to trace EEH devices for VFs + * in error state or not. It's set in eeh_report_error(). If + * it's not set, eeh_report_{reset,resume}() won't be called + * for the VF EEH device. + */ + edev->in_error = false; dev->dev.archdata.edev = NULL; if (!(edev->pe->state & EEH_PE_KEEP)) eeh_rmv_from_parent_pe(edev); |