diff options
| author | Gavin Shan <gwshan@linux.vnet.ibm.com> | 2015-03-17 16:15:02 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2015-03-24 13:15:49 +1100 |
| commit | cca87d303c85b257a7b0fd34f9d6fce1c59880a2 (patch) | |
| tree | 4145eab3e328314e60b9dcc3590616a93aa7bb90 /arch/powerpc/include/asm/device.h | |
| parent | 12a89dbac7914c58b0d207ef608e1c02534708bc (diff) | |
powerpc/pci: Refactor pci_dn
Currently, the PCI config accessors are implemented based on device node.
Unfortunately, SRIOV VFs won't have the corresponding device nodes. pci_dn
will be used in replacement with device node for SRIOV VFs. So we have to
use pci_dn in PCI config accessors.
The patch refactors pci_dn in following aspects to make it ready to be used
in PCI config accessors as we do in subsequent patch:
* pci_dn is organized as a hierarchy tree. PCI device's pci_dn is
put to the child list of pci_dn of its upstream bridge or PHB. VF's
pci_dn will be put to the child list of pci_dn of PF's bridge.
* For one particular PCI device (VF or not), its pci_dn can be
found from pdev->dev.archdata.pci_data, PCI_DN(devnode), or
parent's list. The fast path (fetching pci_dn through PCI device
instance) is populated during early fixup time.
[bhelgaas: changelog]
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/device.h')
| -rw-r--r-- | arch/powerpc/include/asm/device.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/device.h b/arch/powerpc/include/asm/device.h index 38faeded7d59..9f1371bab5fc 100644 --- a/arch/powerpc/include/asm/device.h +++ b/arch/powerpc/include/asm/device.h @@ -8,6 +8,9 @@ struct dma_map_ops; struct device_node; +#ifdef CONFIG_PPC64 +struct pci_dn; +#endif /* * Arch extensions to struct device. @@ -34,6 +37,9 @@ struct dev_archdata { #ifdef CONFIG_SWIOTLB dma_addr_t max_direct_dma_addr; #endif +#ifdef CONFIG_PPC64 + struct pci_dn *pci_data; +#endif #ifdef CONFIG_EEH struct eeh_dev *edev; #endif |