tree 125c42222f64709d6073dc9d6ea3b9bc03624a27
parent 6edc642ebee87dfceb97050d51c5ab1fe539a597
author Nishanth Aravamudan <nacc@us.ibm.com> 1297329047 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1299223145 +1100

powerpc/pseries: Add support for dynamic dma windows

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>