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| author | Wei Yang <weiyang@linux.vnet.ibm.com> | 2015-03-25 09:23:57 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2015-03-31 04:02:38 +0200 |
| commit | 781a868f3136c6eb8e8c5c19d148416d7da86610 (patch) | |
| tree | 941341c0c52f2669b73b5ec619aeff5e31826b4e /arch/powerpc/include/asm | |
| parent | powerpc/powernv: Implement pcibios_iov_resource_alignment() on powernv (diff) | |
| download | linux-781a868f3136c6eb8e8c5c19d148416d7da86610.tar.xz linux-781a868f3136c6eb8e8c5c19d148416d7da86610.zip | |
powerpc/powernv: Shift VF resource with an offset
On PowerNV platform, resource position in M64 BAR implies the PE# the
resource belongs to. In some cases, adjustment of a resource is necessary
to locate it to a correct position in M64 BAR .
This patch adds pnv_pci_vf_resource_shift() to shift the 'real' PF IOV BAR
address according to an offset.
Note:
After doing so, there would be a "hole" in the /proc/iomem when offset
is a positive value. It looks like the device return some mmio back to
the system, which actually no one could use it.
[bhelgaas: rework loops, rework overlap check, index resource[]
conventionally, remove pci_regs.h include, squashed with next patch]
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')
| -rw-r--r-- | arch/powerpc/include/asm/pci-bridge.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h index 7b8ebc5929ff..8716db48e946 100644 --- a/arch/powerpc/include/asm/pci-bridge.h +++ b/arch/powerpc/include/asm/pci-bridge.h @@ -180,6 +180,10 @@ struct pci_dn { int pe_number; #ifdef CONFIG_PCI_IOV 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 IODA_INVALID_M64 (-1) + int m64_wins[PCI_SRIOV_NUM_BARS]; #endif /* CONFIG_PCI_IOV */ #endif struct list_head child_list; |