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drm/radeon: add dma engine support for vm pt updates on ni (v5)
authorAlex Deucher <alexander.deucher@amd.com>
Mon, 22 Oct 2012 16:19:01 +0000 (12:19 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Mon, 10 Dec 2012 22:21:41 +0000 (17:21 -0500)
Async DMA has a special packet for contiguous pt updates
which saves overhead.

v2: leave the CP method enabled for now as doing the updates
in the DMA rings is not working properly yet.

v3: update for 2 level pts

v4: rebase

v5: drop pte/pde packet.  doesn't seem to work on NI.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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