drm/radeon: consolidate sdma hdp flushing code for CIK
It's used in several places so move to a common shared
function.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/cik_sdma.c b/drivers/gpu/drm/radeon/cik_sdma.c
index af520d4..d7e51c0 100644
--- a/drivers/gpu/drm/radeon/cik_sdma.c
+++ b/drivers/gpu/drm/radeon/cik_sdma.c
@@ -157,6 +157,27 @@
}
/**
+ * cik_sdma_hdp_flush_ring_emit - emit an hdp flush on the DMA ring
+ *
+ * @rdev: radeon_device pointer
+ * @ridx: radeon ring index
+ *
+ * Emit an hdp flush packet on the requested DMA ring.
+ */
+static void cik_sdma_hdp_flush_ring_emit(struct radeon_device *rdev,
+ int ridx)
+{
+ struct radeon_ring *ring = &rdev->ring[ridx];
+
+ /* 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);
+}
+
+/**
* cik_sdma_fence_ring_emit - emit a fence on the DMA ring
*
* @rdev: radeon_device pointer
@@ -180,12 +201,7 @@
/* generate an interrupt */
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_TRAP, 0, 0));
/* flush HDP */
- /* 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);
+ cik_sdma_hdp_flush_ring_emit(rdev, fence->ring);
}
/**
@@ -816,12 +832,7 @@
radeon_ring_write(ring, VMID(0));
/* flush HDP */
- /* 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);
+ cik_sdma_hdp_flush_ring_emit(rdev, ridx);
/* flush TLB */
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));