drm/amdgpu: add hdp invalidation for gfx8

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_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index e37378fe1edc7ccd8e7c3edc68ffed20698ee727..aeb35f5049994e11e75b1e480fd604c2d4c924bf 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -4589,6 +4589,18 @@ static void gfx_v8_0_ring_emit_hdp_flush(struct amdgpu_ring *ring)
        amdgpu_ring_write(ring, 0x20); /* poll interval */
 }
 
+static void gfx_v8_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);
+
+}
+
 static void gfx_v8_0_ring_emit_ib_gfx(struct amdgpu_ring *ring,
                                  struct amdgpu_ib *ib)
 {
@@ -5030,6 +5042,7 @@ static const struct amdgpu_ring_funcs gfx_v8_0_ring_funcs_gfx = {
        .emit_vm_flush = gfx_v8_0_ring_emit_vm_flush,
        .emit_gds_switch = gfx_v8_0_ring_emit_gds_switch,
        .emit_hdp_flush = gfx_v8_0_ring_emit_hdp_flush,
+       .emit_hdp_invalidate = gfx_v8_0_ring_emit_hdp_invalidate,
        .test_ring = gfx_v8_0_ring_test_ring,
        .test_ib = gfx_v8_0_ring_test_ib,
        .insert_nop = amdgpu_ring_insert_nop,
@@ -5046,6 +5059,7 @@ static const struct amdgpu_ring_funcs gfx_v8_0_ring_funcs_compute = {
        .emit_vm_flush = gfx_v8_0_ring_emit_vm_flush,
        .emit_gds_switch = gfx_v8_0_ring_emit_gds_switch,
        .emit_hdp_flush = gfx_v8_0_ring_emit_hdp_flush,
+       .emit_hdp_invalidate = gfx_v8_0_ring_emit_hdp_invalidate,
        .test_ring = gfx_v8_0_ring_test_ring,
        .test_ib = gfx_v8_0_ring_test_ib,
        .insert_nop = amdgpu_ring_insert_nop,