RADEON_WAIT_3D_IDLECLEAN
radeon_ring_write(ring, RADEON_WAIT_2D_IDLECLEAN | RADEON_WAIT_3D_IDLECLEAN);
radeon_ring_write(ring, (RADEON_WAIT_3D_IDLECLEAN |
RADEON_WAIT_3D_IDLECLEAN);
RADEON_WAIT_3D_IDLECLEAN);