3.13-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deuc...@amd.com>
commit da9e07e6f53eaac4e838bc8c987d87c5769be724 upstream.
This is the preferred flushing method on CIK.
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Cc: Tom Stellard <thomas.stell...@amd.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/gpu/drm/radeon/cik_sdma.c | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
--- a/drivers/gpu/drm/radeon/cik_sdma.c
+++ b/drivers/gpu/drm/radeon/cik_sdma.c
@@ -99,13 +99,21 @@ static void cik_sdma_hdp_flush_ring_emit
int ridx)
{
struct radeon_ring *ring = &rdev->ring[ridx];
+ u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(1) |
+ SDMA_POLL_REG_MEM_EXTRA_FUNC(3)); /* == */
+ u32 ref_and_mask;
- /* We should be using the new POLL_REG_MEM special op packet here
- * but it causes sDMA to hang sometimes
- */
- radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
- radeon_ring_write(ring, HDP_MEM_COHERENCY_FLUSH_CNTL >> 2);
- radeon_ring_write(ring, 0);
+ if (ridx == R600_RING_TYPE_DMA_INDEX)
+ ref_and_mask = SDMA0;
+ else
+ ref_and_mask = SDMA1;
+
+ radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0,
extra_bits));
+ radeon_ring_write(ring, GPU_HDP_FLUSH_DONE);
+ radeon_ring_write(ring, GPU_HDP_FLUSH_REQ);
+ radeon_ring_write(ring, ref_and_mask); /* reference */
+ radeon_ring_write(ring, ref_and_mask); /* mask */
+ radeon_ring_write(ring, (0xfff << 16) | 10); /* retry count, poll
interval */
}
/**
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
