drm/amdgpu: add a ring func for vcn start command

Needed for the proper command sequence for VCN.

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index cb9472f..f774b3f 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -169,6 +169,9 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
                dma_fence_put(tmp);
        }
 
+       if (ring->funcs->insert_start)
+               ring->funcs->insert_start(ring);
+
        if (vm) {
                r = amdgpu_vm_flush(ring, job);
                if (r) {

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
index 731f094..9bf3100 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
@@ -132,6 +132,7 @@ struct amdgpu_ring_funcs {
        int (*test_ib)(struct amdgpu_ring *ring, long timeout);
        /* insert NOP packets */
        void (*insert_nop)(struct amdgpu_ring *ring, uint32_t count);
+       void (*insert_start)(struct amdgpu_ring *ring);
        void (*insert_end)(struct amdgpu_ring *ring);
        /* pad the indirect buffer to the necessary number of dw */
        void (*pad_ib)(struct amdgpu_ring *ring, struct amdgpu_ib *ib);