drm/amdgpu: wire up emit_wreg for gfx v6

Needed for vm_flush unification.

v2: handle compute rings as well.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
index 39acafbc84d6fa64475788023cb10a8a21a5a139..ebe42632def0c48a3e01693f27a60605bea02866 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
@@ -2402,6 +2402,18 @@ static void gfx_v6_0_ring_emit_vm_flush(struct amdgpu_ring *ring,
        }
 }
 
+static void gfx_v6_0_ring_emit_wreg(struct amdgpu_ring *ring,
+                                   uint32_t reg, uint32_t val)
+{
+       int usepfp = (ring->funcs->type == AMDGPU_RING_TYPE_GFX);
+
+       amdgpu_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
+       amdgpu_ring_write(ring, (WRITE_DATA_ENGINE_SEL(usepfp) |
+                                WRITE_DATA_DST_SEL(0)));
+       amdgpu_ring_write(ring, reg);
+       amdgpu_ring_write(ring, 0);
+       amdgpu_ring_write(ring, val);
+}
 
 static void gfx_v6_0_rlc_fini(struct amdgpu_device *adev)
 {
@@ -3529,6 +3541,7 @@ static const struct amdgpu_ring_funcs gfx_v6_0_ring_funcs_gfx = {
        .test_ib = gfx_v6_0_ring_test_ib,
        .insert_nop = amdgpu_ring_insert_nop,
        .emit_cntxcntl = gfx_v6_ring_emit_cntxcntl,
+       .emit_wreg = gfx_v6_0_ring_emit_wreg,
 };
 
 static const struct amdgpu_ring_funcs gfx_v6_0_ring_funcs_compute = {
@@ -3554,6 +3567,7 @@ static const struct amdgpu_ring_funcs gfx_v6_0_ring_funcs_compute = {
        .test_ring = gfx_v6_0_ring_test_ring,
        .test_ib = gfx_v6_0_ring_test_ib,
        .insert_nop = amdgpu_ring_insert_nop,
+       .emit_wreg = gfx_v6_0_ring_emit_wreg,
 };
 
 static void gfx_v6_0_set_ring_funcs(struct amdgpu_device *adev)