drm/nouveau/fence: convert to exec engine, and improve channel sync
authorBen Skeggs <bskeggs@redhat.com>
Mon, 30 Apr 2012 03:55:29 +0000 (13:55 +1000)
committerBen Skeggs <bskeggs@redhat.com>
Thu, 24 May 2012 06:55:53 +0000 (16:55 +1000)
Now have a somewhat simpler semaphore sync implementation for nv17:nv84,
and a switched to using semaphores as fences on nv84+ and making use of
the hardware's >= acquire operation.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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