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| author | Wei Yang <weiyang@linux.vnet.ibm.com> | 2015-03-25 16:23:58 +0800 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2015-03-31 13:02:38 +1100 |
| commit | 5b88ec228498b7d41de6599eca12cc0032056e3f (patch) | |
| tree | 9ef87bc8413673daf8a074c8baf0f052eb03950c /arch/powerpc/include/asm/pci-bridge.h | |
| parent | 781a868f3136c6eb8e8c5c19d148416d7da86610 (diff) | |
| download | linux-5b88ec228498b7d41de6599eca12cc0032056e3f.tar.gz linux-5b88ec228498b7d41de6599eca12cc0032056e3f.tar.xz | |
powerpc/powernv: Reserve additional space for IOV BAR, with m64_per_iov supported
M64 aperture size is limited on PHB3. When the IOV BAR is too big, this
will exceed the limitation and failed to be assigned.
Introduce a different mechanism based on the IOV BAR size:
- if IOV BAR size is smaller than 64MB, expand to total_pe
- if IOV BAR size is bigger than 64MB, roundup power2
[bhelgaas: make dev_printk() output more consistent, use PCI_SRIOV_NUM_BARS]
Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/pci-bridge.h')
| -rw-r--r-- | arch/powerpc/include/asm/pci-bridge.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h index 8716db48e946..415df8509f52 100644 --- a/arch/powerpc/include/asm/pci-bridge.h +++ b/arch/powerpc/include/asm/pci-bridge.h @@ -182,6 +182,8 @@ struct pci_dn { u16 vfs_expanded; /* number of VFs IOV BAR expanded */ u16 num_vfs; /* number of VFs enabled*/ int offset; /* PE# for the first VF PE */ +#define M64_PER_IOV 4 + int m64_per_iov; #define IODA_INVALID_M64 (-1) int m64_wins[PCI_SRIOV_NUM_BARS]; #endif /* CONFIG_PCI_IOV */ |