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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>
This commit is contained in:
Leo Liu 2017-05-11 16:29:08 -04:00 committed by Alex Deucher
parent 7741cced67
commit ef44f8541e
2 changed files with 4 additions and 0 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
View File

@ -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) {

1
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
View File

@ -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);