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| author | Wei Yang <weiyang@linux.vnet.ibm.com> | 2016-03-04 02:53:06 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-03-09 01:58:17 +0300 |
| commit | 51c0e87e9a48d081d7ccb40d7454a0fa2935a424 (patch) | |
| tree | 857e9d84f428131604138d391ebf9b492be41747 /arch/powerpc/kernel/eeh_cache.c | |
| parent | 971427f5827d5a013965878e196d6930a977e8a7 (diff) | |
| download | linux-51c0e87e9a48d081d7ccb40d7454a0fa2935a424.tar.xz | |
powerpc/eeh: Cache normal BARs, not windows or IOV BARs
This restricts the EEH address cache to use only the first 7 BARs. This
makes __eeh_addr_cache_insert_dev() ignore PCI bridge window and IOV BARs.
As the result of this change, eeh_addr_cache_get_dev() will return VFs from
VF's resource addresses instead of parent PFs.
This also removes PCI bridge check as we limit __eeh_addr_cache_insert_dev()
to 7 BARs and this effectively excludes PCI bridges from being cached.
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_cache.c')
| -rw-r--r-- | arch/powerpc/kernel/eeh_cache.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/eeh_cache.c b/arch/powerpc/kernel/eeh_cache.c index a1e86e172e3c..ddbcfab7efdf 100644 --- a/arch/powerpc/kernel/eeh_cache.c +++ b/arch/powerpc/kernel/eeh_cache.c @@ -195,8 +195,11 @@ static void __eeh_addr_cache_insert_dev(struct pci_dev *dev) return; } - /* Walk resources on this device, poke them into the tree */ - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { + /* + * Walk resources on this device, poke the first 7 (6 normal BAR and 1 + * ROM BAR) into the tree. + */ + for (i = 0; i <= PCI_ROM_RESOURCE; i++) { resource_size_t start = pci_resource_start(dev,i); resource_size_t end = pci_resource_end(dev,i); unsigned long flags = pci_resource_flags(dev,i); @@ -222,10 +225,6 @@ void eeh_addr_cache_insert_dev(struct pci_dev *dev) { unsigned long flags; - /* Ignore PCI bridges */ - if ((dev->class >> 16) == PCI_BASE_CLASS_BRIDGE) - return; - spin_lock_irqsave(&pci_io_addr_cache_root.piar_lock, flags); __eeh_addr_cache_insert_dev(dev); spin_unlock_irqrestore(&pci_io_addr_cache_root.piar_lock, flags); |