From: Alex Deucher <alexdeucher@gmail.com>
Date: Sat, 4 Sep 2010 09:04:34 +0000 (-0400)
Subject: drm/radeon/kms/r6xx+: use new style fencing (v3)
X-Git-Tag: v2.6.37-rc1~92^2~23^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d0f8a854c340986359a3b0a97e380c71def7a440;p=pandora-kernel.git

drm/radeon/kms/r6xx+: use new style fencing (v3)

On r6xx+ a newer fence mechanism was implemented to replace
the old wait_until plus scratch regs setup.  A single EOP event
will flush the destination caches, write a fence value, and generate
an interrupt.  This is the recommended fence mechanism on r6xx+ asics.

This requires my previous writeback patch.

v2: fix typo that enabled event fence checking on all asics
rather than just r6xx+.

v3: properly enable EOP interrupts
Should fix:
https://bugs.freedesktop.org/show_bug.cgi?id=29972

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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