[PATCH v2 10/20] drm/admgpu: handle resv dependencies in amdgpu_ttm_map_buffer

Pierre-Eric Pelloux-Prayer
2025-11-13T16:10:09Z

If a resv object is passed, its fences are treated as a dependency
for the amdgpu_ttm_map_buffer operation.

This will be used by amdgpu_bo_release_notify through
amdgpu_fill_buffer.

Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index b13f0993dbf1..411997db70eb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -184,7 +184,8 @@ static int amdgpu_ttm_map_buffer(struct drm_sched_entity *entity,
struct amdgpu_res_cursor *mm_cur,
unsigned int window, struct amdgpu_ring *ring,
bool tmz, uint64_t *size, uint64_t *addr,
- struct dma_fence *dep)
+ struct dma_fence *dep,
+ struct dma_resv *resv)
{
struct amdgpu_device *adev = ring->adev;
unsigned int offset, num_pages, num_dw, num_bytes;
@@ -239,6 +240,10 @@ static int amdgpu_ttm_map_buffer(struct drm_sched_entity *entity,
if (dep)
drm_sched_job_add_dependency(&job->base, dma_fence_get(dep));

+ if (resv)
+ drm_sched_job_add_resv_dependencies(&job->base, resv,
+ DMA_RESV_USAGE_BOOKKEEP);
+
src_addr = num_dw * 4;
src_addr += job->ibs[0].gpu_addr;

@@ -332,14 +337,14 @@ static int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
r = amdgpu_ttm_map_buffer(&entity->base,
src->bo, src->mem, &src_mm,
entity->gart_window_id0, ring, tmz, &cur_size, &from,
- NULL);
+ NULL, NULL);
if (r)
goto error;

r = amdgpu_ttm_map_buffer(&entity->base,
dst->bo, dst->mem, &dst_mm,
entity->gart_window_id1, ring, tmz, &cur_size, &to,
- NULL);
+ NULL, NULL);
if (r)
goto error;

@@ -2451,7 +2456,7 @@ int amdgpu_ttm_clear_buffer(struct amdgpu_bo *bo,
r = amdgpu_ttm_map_buffer(&entity->base,
&bo->tbo, bo->tbo.resource, &cursor,
entity->gart_window_id1, ring, false, &size, &addr,
- NULL);
+ NULL, NULL);
if (r)
goto err;

@@ -2506,7 +2511,8 @@ int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity,
&bo->tbo, bo->tbo.resource, &dst,
entity->gart_window_id1, ring, false,
&cur_size, &to,
- dependency);
+ dependency,
+ resv);
if (r)
goto error;

--
2.43.0