[PATCH v2 05/20] drm/amdgpu: pass the entity to use to ttm functions

Pierre-Eric Pelloux-Prayer
2025-11-13T16:08:57Z

This way the caller can select the one it wants to use.

Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c | 3 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 4 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 75 +++++++++++--------
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 16 ++--
drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 3 +-
5 files changed, 60 insertions(+), 41 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
index 02c2479a8840..b59040a8771f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
@@ -38,7 +38,8 @@ static int amdgpu_benchmark_do_move(struct amdgpu_device *adev, unsigned size,
stime = ktime_get();
for (i = 0; i < n; i++) {
struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
- r = amdgpu_copy_buffer(ring, saddr, daddr, size, NULL, &fence,
+ r = amdgpu_copy_buffer(ring, &adev->mman.default_entity.base,
+ saddr, daddr, size, NULL, &fence,
false, 0);
if (r)
goto exit_do_move;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index e08f58de4b17..c06c132a753c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -1321,8 +1321,8 @@ void amdgpu_bo_release_notify(struct ttm_buffer_object *bo)
if (r)
goto out;

- r = amdgpu_fill_buffer(abo, 0, &bo->base._resv, &fence, true,
- AMDGPU_KERNEL_JOB_ID_CLEAR_ON_RELEASE);
+ r = amdgpu_fill_buffer(&adev->mman.clear_entity, abo, 0, &bo->base._resv,
+ &fence, AMDGPU_KERNEL_JOB_ID_CLEAR_ON_RELEASE);
if (WARN_ON(r))
goto out;

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 42d448cd6a6d..c8d59ca2b3bd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -164,6 +164,7 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo,

/**
* amdgpu_ttm_map_buffer - Map memory into the GART windows
+ * @entity: entity to run the window setup job
* @bo: buffer object to map
* @mem: memory object to map
* @mm_cur: range to map
@@ -176,7 +177,8 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo,
* Setup one of the GART windows to access a specific piece of memory or return
* the physical address for local memory.
*/
-static int amdgpu_ttm_map_buffer(struct ttm_buffer_object *bo,
+static int amdgpu_ttm_map_buffer(struct drm_sched_entity *entity,
+ struct ttm_buffer_object *bo,
struct ttm_resource *mem,
struct amdgpu_res_cursor *mm_cur,
unsigned int window, struct amdgpu_ring *ring,
@@ -224,7 +226,7 @@ static int amdgpu_ttm_map_buffer(struct ttm_buffer_object *bo,
num_dw = ALIGN(adev->mman.buffer_funcs->copy_num_dw, 8);
num_bytes = num_pages * 8 * AMDGPU_GPU_PAGES_IN_CPU_PAGE;

- r = amdgpu_job_alloc_with_ib(adev, &adev->mman.default_entity.base,
+ r = amdgpu_job_alloc_with_ib(adev, entity,
AMDGPU_FENCE_OWNER_UNDEFINED,
num_dw * 4 + num_bytes,
AMDGPU_IB_POOL_DELAYED, &job,
@@ -274,6 +276,7 @@ static int amdgpu_ttm_map_buffer(struct ttm_buffer_object *bo,
/**
* amdgpu_ttm_copy_mem_to_mem - Helper function for copy
* @adev: amdgpu device
+ * @entity: entity to run the jobs
* @src: buffer/address where to read from
* @dst: buffer/address where to write to
* @size: number of bytes to copy
@@ -288,6 +291,7 @@ static int amdgpu_ttm_map_buffer(struct ttm_buffer_object *bo,
*/
__attribute__((nonnull))
static int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
+ struct drm_sched_entity *entity,
const struct amdgpu_copy_mem *src,
const struct amdgpu_copy_mem *dst,
uint64_t size, bool tmz,
@@ -320,12 +324,14 @@ static int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
cur_size = min3(src_mm.size, dst_mm.size, 256ULL << 20);

/* Map src to window 0 and dst to window 1. */
- r = amdgpu_ttm_map_buffer(src->bo, src->mem, &src_mm,
+ r = amdgpu_ttm_map_buffer(entity,
+ src->bo, src->mem, &src_mm,
0, ring, tmz, &cur_size, &from);
if (r)
goto error;

- r = amdgpu_ttm_map_buffer(dst->bo, dst->mem, &dst_mm,
+ r = amdgpu_ttm_map_buffer(entity,
+ dst->bo, dst->mem, &dst_mm,
1, ring, tmz, &cur_size, &to);
if (r)
goto error;
@@ -353,7 +359,7 @@ static int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
write_compress_disable));
}

- r = amdgpu_copy_buffer(ring, from, to, cur_size, resv,
+ r = amdgpu_copy_buffer(ring, entity, from, to, cur_size, resv,
&next, true, copy_flags);
if (r)
goto error;
@@ -394,7 +400,9 @@ static int amdgpu_move_blit(struct ttm_buffer_object *bo,
src.offset = 0;
dst.offset = 0;

- r = amdgpu_ttm_copy_mem_to_mem(adev, &src, &dst,
+ r = amdgpu_ttm_copy_mem_to_mem(adev,
+ &adev->mman.move_entity.base,
+ &src, &dst,
new_mem->size,
amdgpu_bo_encrypted(abo),
bo->base.resv, &fence);
@@ -406,8 +414,9 @@ static int amdgpu_move_blit(struct ttm_buffer_object *bo,
(abo->flags & AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE)) {
struct dma_fence *wipe_fence = NULL;

- r = amdgpu_fill_buffer(abo, 0, NULL, &wipe_fence,
- false, AMDGPU_KERNEL_JOB_ID_MOVE_BLIT);
+ r = amdgpu_fill_buffer(&adev->mman.move_entity,
+ abo, 0, NULL, &wipe_fence,
+ AMDGPU_KERNEL_JOB_ID_MOVE_BLIT);
if (r) {
goto error;
} else if (wipe_fence) {
@@ -2223,16 +2232,15 @@ void amdgpu_ttm_set_buffer_funcs_status(struct amdgpu_device *adev, bool enable)
}

static int amdgpu_ttm_prepare_job(struct amdgpu_device *adev,
+ struct drm_sched_entity *entity,
unsigned int num_dw,
struct dma_resv *resv,
bool vm_needs_flush,
struct amdgpu_job **job,
- bool delayed, u64 k_job_id)
+ u64 k_job_id)
{
enum amdgpu_ib_pool_type pool = AMDGPU_IB_POOL_DELAYED;
int r;
- struct drm_sched_entity *entity = delayed ? &adev->mman.clear_entity.base :
- &adev->mman.move_entity.base;
r = amdgpu_job_alloc_with_ib(adev, entity,
AMDGPU_FENCE_OWNER_UNDEFINED,
num_dw * 4, pool, job, k_job_id);
@@ -2252,7 +2260,9 @@ static int amdgpu_ttm_prepare_job(struct amdgpu_device *adev,
DMA_RESV_USAGE_BOOKKEEP);
}

-int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
+int amdgpu_copy_buffer(struct amdgpu_ring *ring,
+ struct drm_sched_entity *entity,
+ uint64_t src_offset,
uint64_t dst_offset, uint32_t byte_count,
struct dma_resv *resv,
struct dma_fence **fence,
@@ -2274,8 +2284,8 @@ int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
max_bytes = adev->mman.buffer_funcs->copy_max_bytes;
num_loops = DIV_ROUND_UP(byte_count, max_bytes);
num_dw = ALIGN(num_loops * adev->mman.buffer_funcs->copy_num_dw, 8);
- r = amdgpu_ttm_prepare_job(adev, num_dw,
- resv, vm_needs_flush, &job, false,
+ r = amdgpu_ttm_prepare_job(adev, entity, num_dw,
+ resv, vm_needs_flush, &job,
AMDGPU_KERNEL_JOB_ID_TTM_COPY_BUFFER);
if (r)
return r;
@@ -2304,11 +2314,13 @@ int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
return r;
}

-static int amdgpu_ttm_fill_mem(struct amdgpu_ring *ring, uint32_t src_data,
+static int amdgpu_ttm_fill_mem(struct amdgpu_ring *ring,
+ struct drm_sched_entity *entity,
+ uint32_t src_data,
uint64_t dst_addr, uint32_t byte_count,
struct dma_resv *resv,
struct dma_fence **fence,
- bool vm_needs_flush, bool delayed,
+ bool vm_needs_flush,
u64 k_job_id)
{
struct amdgpu_device *adev = ring->adev;
@@ -2321,8 +2333,8 @@ static int amdgpu_ttm_fill_mem(struct amdgpu_ring *ring, uint32_t src_data,
max_bytes = adev->mman.buffer_funcs->fill_max_bytes;
num_loops = DIV_ROUND_UP_ULL(byte_count, max_bytes);
num_dw = ALIGN(num_loops * adev->mman.buffer_funcs->fill_num_dw, 8);
- r = amdgpu_ttm_prepare_job(adev, num_dw, resv, vm_needs_flush,
- &job, delayed, k_job_id);
+ r = amdgpu_ttm_prepare_job(adev, entity, num_dw, resv,
+ vm_needs_flush, &job, k_job_id);
if (r)
return r;

@@ -2386,13 +2398,14 @@ int amdgpu_ttm_clear_buffer(struct amdgpu_bo *bo,
/* Never clear more than 256MiB at once to avoid timeouts */
size = min(cursor.size, 256ULL << 20);

- r = amdgpu_ttm_map_buffer(&bo->tbo, bo->tbo.resource, &cursor,
+ r = amdgpu_ttm_map_buffer(&adev->mman.clear_entity.base,
+ &bo->tbo, bo->tbo.resource, &cursor,
1, ring, false, &size, &addr);
if (r)
goto err;

- r = amdgpu_ttm_fill_mem(ring, 0, addr, size, resv,
- &next, true, true,
+ r = amdgpu_ttm_fill_mem(ring, &adev->mman.clear_entity.base, 0, addr, size, resv,
+ &next, true,
AMDGPU_KERNEL_JOB_ID_TTM_CLEAR_BUFFER);
if (r)
goto err;
@@ -2408,12 +2421,12 @@ int amdgpu_ttm_clear_buffer(struct amdgpu_bo *bo,
return r;
}

-int amdgpu_fill_buffer(struct amdgpu_bo *bo,
- uint32_t src_data,
- struct dma_resv *resv,
- struct dma_fence **f,
- bool delayed,
- u64 k_job_id)
+int amdgpu_fill_buffer(struct amdgpu_ttm_entity *entity,
+ struct amdgpu_bo *bo,
+ uint32_t src_data,
+ struct dma_resv *resv,
+ struct dma_fence **f,
+ u64 k_job_id)
{
struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
@@ -2437,13 +2450,15 @@ int amdgpu_fill_buffer(struct amdgpu_bo *bo,
/* Never fill more than 256MiB at once to avoid timeouts */
cur_size = min(dst.size, 256ULL << 20);

- r = amdgpu_ttm_map_buffer(&bo->tbo, bo->tbo.resource, &dst,
+ r = amdgpu_ttm_map_buffer(&entity->base,
+ &bo->tbo, bo->tbo.resource, &dst,
1, ring, false, &cur_size, &to);
if (r)
goto error;

- r = amdgpu_ttm_fill_mem(ring, src_data, to, cur_size, resv,
- &next, true, delayed, k_job_id);
+ r = amdgpu_ttm_fill_mem(ring, &entity->base,
+ src_data, to, cur_size, resv,
+ &next, true, k_job_id);
if (r)
goto error;

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
index d2295d6c2b67..e1655f86a016 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
@@ -167,7 +167,9 @@ int amdgpu_ttm_init(struct amdgpu_device *adev);
void amdgpu_ttm_fini(struct amdgpu_device *adev);
void amdgpu_ttm_set_buffer_funcs_status(struct amdgpu_device *adev,
bool enable);
-int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
+int amdgpu_copy_buffer(struct amdgpu_ring *ring,
+ struct drm_sched_entity *entity,
+ uint64_t src_offset,
uint64_t dst_offset, uint32_t byte_count,
struct dma_resv *resv,
struct dma_fence **fence,
@@ -175,12 +177,12 @@ int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
int amdgpu_ttm_clear_buffer(struct amdgpu_bo *bo,
struct dma_resv *resv,
struct dma_fence **fence);
-int amdgpu_fill_buffer(struct amdgpu_bo *bo,
- uint32_t src_data,
- struct dma_resv *resv,
- struct dma_fence **fence,
- bool delayed,
- u64 k_job_id);
+int amdgpu_fill_buffer(struct amdgpu_ttm_entity *entity,
+ struct amdgpu_bo *bo,
+ uint32_t src_data,
+ struct dma_resv *resv,
+ struct dma_fence **f,
+ u64 k_job_id);

int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo);
void amdgpu_ttm_recover_gart(struct ttm_buffer_object *tbo);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
index d74ff6e90590..09756132fa1b 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
@@ -157,7 +157,8 @@ svm_migrate_copy_memory_gart(struct amdgpu_device *adev, dma_addr_t *sys,
goto out_unlock;
}

- r = amdgpu_copy_buffer(ring, gart_s, gart_d, size * PAGE_SIZE,
+ r = amdgpu_copy_buffer(ring, &entity->base,
+ gart_s, gart_d, size * PAGE_SIZE,
NULL, &next, true, 0);
if (r) {
dev_err(adev->dev, "fail %d to copy memory\n", r);
--
2.43.0