x86_64: Calgary - Fix mis-handled PCI topology

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Current code assumed that devices were directly connected to a Calgary
bridge, as it tried to get the iommu table directly from the parent bus
controller.

When we have another bridge between the Calgary/CalIOC2 bridge and the
device we should look upwards until we get to the top (Calgary/CalIOC2
bridge), where the iommu table resides.

Signed-off-by: Murillo Fernandes Bernardes <mfb@br.ibm.com>
Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Murillo Fernandes Bernardes 2007-08-10 22:31:00 +02:00 • committed by Linus Torvalds

parent 3320ad994a

commit f055a0619a

1 changed files with 6 additions and 7 deletions

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arch/x86_64/kernel/pci-calgary.c

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