powerpc/powernv: Reserve additional space for IOV BAR, with m64_per_iov supported

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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>

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This commit is contained in:

Wei Yang 2015-03-25 16:23:58 +08:00 • committed by Benjamin Herrenschmidt

parent 781a868f31

commit 5b88ec2284

2 changed files with 32 additions and 3 deletions

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2

arch/powerpc/include/asm/pci-bridge.h

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33

arch/powerpc/platforms/powernv/pci-ioda.c

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