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| author | Alex Deucher <alexander.deucher@amd.com> | 2014-01-09 22:51:56 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2014-01-20 18:05:15 +0100 |
| commit | 5d2590673f3e5c0c0ecf496fb48c73e3ee3ee573 (patch) | |
| tree | 3e6b3f66afc3ec7d5501f6132d79e3ce9ec32037 /drivers/gpu/drm/radeon | |
| parent | drm/radeon/cik: use POLL_REG_MEM special op for sDMA HDP flush (diff) | |
| download | linux-5d2590673f3e5c0c0ecf496fb48c73e3ee3ee573.tar.xz linux-5d2590673f3e5c0c0ecf496fb48c73e3ee3ee573.zip | |
drm/radeon/cik: use WAIT_REG_MEM special op for CP HDP flush
This is the preferred flushing method on CIK.
Note, this only works on the PFP so the engine bit must be
set.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon')
| -rw-r--r-- | drivers/gpu/drm/radeon/cik.c | 39 |
1 files changed, 30 insertions, 9 deletions
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index c6e31b8f8983..e8ec15dfe5f8 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -3498,16 +3498,37 @@ static void cik_hdp_flush_cp_ring_emit(struct radeon_device *rdev, int ridx) { struct radeon_ring *ring = &rdev->ring[ridx]; + u32 ref_and_mask; - /* We should be using the new WAIT_REG_MEM special op packet here - * but it causes the CP to hang - */ - radeon_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3)); - radeon_ring_write(ring, (WRITE_DATA_ENGINE_SEL(0) | - WRITE_DATA_DST_SEL(0))); - radeon_ring_write(ring, HDP_MEM_COHERENCY_FLUSH_CNTL >> 2); - radeon_ring_write(ring, 0); - radeon_ring_write(ring, 0); + switch (ring->idx) { + case CAYMAN_RING_TYPE_CP1_INDEX: + case CAYMAN_RING_TYPE_CP2_INDEX: + default: + switch (ring->me) { + case 0: + ref_and_mask = CP2 << ring->pipe; + break; + case 1: + ref_and_mask = CP6 << ring->pipe; + break; + default: + return; + } + break; + case RADEON_RING_TYPE_GFX_INDEX: + ref_and_mask = CP0; + break; + } + + radeon_ring_write(ring, PACKET3(PACKET3_WAIT_REG_MEM, 5)); + radeon_ring_write(ring, (WAIT_REG_MEM_OPERATION(1) | /* write, wait, write */ + WAIT_REG_MEM_FUNCTION(3) | /* == */ + WAIT_REG_MEM_ENGINE(1))); /* pfp */ + radeon_ring_write(ring, GPU_HDP_FLUSH_REQ >> 2); + radeon_ring_write(ring, GPU_HDP_FLUSH_DONE >> 2); + radeon_ring_write(ring, ref_and_mask); + radeon_ring_write(ring, ref_and_mask); + radeon_ring_write(ring, 0x20); /* poll interval */ } /** |