powerpc/powernv: Reserve M64 PEs based on BARs

Browse source

On PHB3, some PEs might be reserved in advance to reflect the M64
segments consumed by those PEs. We're reserving PEs based on the
M64 window of root port, which might contain VF BAR. The PEs for
VFs are allocated dynamically, not reserved based on the consumed
M64 segments. So the M64 window of root port isn't reliable for
the task. Instead, we go through M64 BARs (VF BARs excluded) of
PCI devices under the specified root bus and reserve PEs accordingly,
as the patch does.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

...

This commit is contained in:

Gavin Shan 2015-06-19 12:26:17 +10:00 • committed by Michael Ellerman

parent e9dc4d7f72

commit 96a2f92bf8

2 changed files with 38 additions and 21 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

54

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

View file

3

arch/powerpc/platforms/powernv/pci.h

View file