drm/amdgpu: add hdp invalidation for gfx7

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
index 8fb7ebf3be3e7537226dcfe01fc1b127089ce185..1b713009c5d2aa43f0a7bc51efed2f49d8103457 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
@@ -1924,6 +1924,25 @@ static void gfx_v7_0_ring_emit_hdp_flush(struct amdgpu_ring *ring)
        amdgpu_ring_write(ring, 0x20); /* poll interval */
 }
 
+/**
+ * gfx_v7_0_ring_emit_hdp_invalidate - emit an hdp invalidate on the cp
+ *
+ * @adev: amdgpu_device pointer
+ * @ridx: amdgpu ring index
+ *
+ * Emits an hdp invalidate on the cp.
+ */
+static void gfx_v7_0_ring_emit_hdp_invalidate(struct amdgpu_ring *ring)
+{
+       amdgpu_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
+       amdgpu_ring_write(ring, (WRITE_DATA_ENGINE_SEL(0) |
+                                WRITE_DATA_DST_SEL(0) |
+                                WR_CONFIRM));
+       amdgpu_ring_write(ring, mmHDP_DEBUG0);
+       amdgpu_ring_write(ring, 0);
+       amdgpu_ring_write(ring, 1);
+}
+
 /**
  * gfx_v7_0_ring_emit_fence_gfx - emit a fence on the gfx ring
  *
@@ -5132,6 +5151,7 @@ static const struct amdgpu_ring_funcs gfx_v7_0_ring_funcs_gfx = {
        .emit_vm_flush = gfx_v7_0_ring_emit_vm_flush,
        .emit_gds_switch = gfx_v7_0_ring_emit_gds_switch,
        .emit_hdp_flush = gfx_v7_0_ring_emit_hdp_flush,
+       .emit_hdp_invalidate = gfx_v7_0_ring_emit_hdp_invalidate,
        .test_ring = gfx_v7_0_ring_test_ring,
        .test_ib = gfx_v7_0_ring_test_ib,
        .insert_nop = amdgpu_ring_insert_nop,
@@ -5148,6 +5168,7 @@ static const struct amdgpu_ring_funcs gfx_v7_0_ring_funcs_compute = {
        .emit_vm_flush = gfx_v7_0_ring_emit_vm_flush,
        .emit_gds_switch = gfx_v7_0_ring_emit_gds_switch,
        .emit_hdp_flush = gfx_v7_0_ring_emit_hdp_flush,
+       .emit_hdp_invalidate = gfx_v7_0_ring_emit_hdp_invalidate,
        .test_ring = gfx_v7_0_ring_test_ring,
        .test_ib = gfx_v7_0_ring_test_ib,
        .insert_nop = amdgpu_ring_insert_nop,