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| author | Wei Yang <weiyang@linux.vnet.ibm.com> | 2015-03-25 11:23:50 +0300 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2015-03-31 05:02:36 +0300 |
| commit | 978d2d68312326b715a5913aaab1eaf24fe99108 (patch) | |
| tree | 101dc75d31df4bf5cb714014319d44f87079c70f /include/linux/pci.h | |
| parent | 995df527f3990d91fe8f3d7d1917a7adc3938320 (diff) | |
| download | linux-978d2d68312326b715a5913aaab1eaf24fe99108.tar.xz | |
PCI: Add pcibios_iov_resource_alignment() interface
Per the SR-IOV spec r1.1, sec 3.3.14, the required alignment of a PF's IOV
BAR is the size of an individual VF BAR, and the size consumed is the
individual VF BAR size times NumVFs.
The PowerNV platform has additional alignment requirements to help support
its Partitionable Endpoint device isolation feature (see
Documentation/powerpc/pci_iov_resource_on_powernv.txt).
Add a pcibios_iov_resource_alignment() interface to allow platforms to
request additional alignment.
[bhelgaas: changelog, adapt to reworked pci_sriov_resource_alignment(),
drop "align" parameter]
Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 99ea94835fb6..4e1f17db1a81 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1174,6 +1174,7 @@ unsigned char pci_bus_max_busnr(struct pci_bus *bus); void pci_setup_bridge(struct pci_bus *bus); resource_size_t pcibios_window_alignment(struct pci_bus *bus, unsigned long type); +resource_size_t pcibios_iov_resource_alignment(struct pci_dev *dev, int resno); #define PCI_VGA_STATE_CHANGE_BRIDGE (1 << 0) #define PCI_VGA_STATE_CHANGE_DECODES (1 << 1) |