powerpc/pseries: Add support for dynamic dma windows

Browse source

If firmware allows us to map all of a partition's memory for DMA on a
particular bridge, create a 1:1 mapping of that memory. Add hooks for
dealing with hotplug events. Dynamic DMA windows can use larger than the
default page size, and we use the largest one possible.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

...

This commit is contained in:

Nishanth Aravamudan 2011-02-10 09:10:47 +00:00 • committed by Benjamin Herrenschmidt

parent 6edc642ebe

commit 4e8b0cf46b

2 changed files with 591 additions and 0 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

4

Documentation/kernel-parameters.txt

View file

587

arch/powerpc/platforms/pseries/iommu.c

View file