From: Dave Airlie <airlied@redhat.com>
Date: Mon, 9 Mar 2009 05:31:20 +0000 (+1000)
Subject: drm/radeon: fix r600 writeback setup.
X-Git-Tag: v2.6.30-rc1~613^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6546bf6d6cbf1f9ac350fd278a1d937d4bb9ad06;p=pandora-kernel.git

drm/radeon: fix r600 writeback setup.

This fixes 2 bugs:
1. the AGP calculation wasn't consistent with the PCI(E) calc for the
RPTR_ADDR registers. This consolidates the writes and fixes it up.

2. The scratch address was being incorrectly calculated, this breaks
it out into a lot more linear steps.

Signed-off-by: Dave Airlie <airlied@redhat.com>
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