From: Nishanth Aravamudan <nacc@us.ibm.com>
Date: Thu, 10 Feb 2011 09:10:47 +0000 (+0000)
Subject: powerpc/pseries: Add support for dynamic dma windows
X-Git-Tag: v2.6.39-rc1~430^2~45
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4e8b0cf46b2570331a4c4157d53906883c442a22;p=pandora-kernel.git

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>
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