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| author | Felix Kuehling <Felix.Kuehling@amd.com> | 2021-05-05 15:18:53 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-05-21 17:59:59 -0400 |
| commit | b453e42a6e8b9fa4580011e923963248c56b9d4d (patch) | |
| tree | ec01dca5c5328631a937a3ff9d18ce02725e4b75 /drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | |
| parent | 6abb3f434c00281b338b5d7a547c57d93e0b9782 (diff) | |
| download | linux-stable-b453e42a6e8b9fa4580011e923963248c56b9d4d.tar.gz linux-stable-b453e42a6e8b9fa4580011e923963248c56b9d4d.tar.bz2 linux-stable-b453e42a6e8b9fa4580011e923963248c56b9d4d.zip | |
drm/amdgpu: Add new placement for preemptible SG BOs
SG BOs such as dmabuf imports and userptr BOs do not consume system
resources directly. Instead they point to resources owned elsewhere.
They typically get evicted by DMABuf move notifiers of MMU notifiers.
If those notifiers don't need to wait for hardware fences (i.e. the SG
BOs are used in a preemptible context), then we don't need to limit
them to the GTT size and we don't need TTM to evict them.
Create a new placement for such preemptible SG BOs that does not impose
artificial size limits and TTM evictions.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h index eb84a69c4b74..2877a924086f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h @@ -31,6 +31,7 @@ #define AMDGPU_PL_GDS (TTM_PL_PRIV + 0) #define AMDGPU_PL_GWS (TTM_PL_PRIV + 1) #define AMDGPU_PL_OA (TTM_PL_PRIV + 2) +#define AMDGPU_PL_PREEMPT (TTM_PL_PRIV + 3) #define AMDGPU_GTT_MAX_TRANSFER_SIZE 512 #define AMDGPU_GTT_NUM_TRANSFER_WINDOWS 2 @@ -54,6 +55,11 @@ struct amdgpu_gtt_mgr { atomic64_t available; }; +struct amdgpu_preempt_mgr { + struct ttm_resource_manager manager; + atomic64_t used; +}; + struct amdgpu_mman { struct ttm_device bdev; bool initialized; @@ -70,6 +76,7 @@ struct amdgpu_mman { struct amdgpu_vram_mgr vram_mgr; struct amdgpu_gtt_mgr gtt_mgr; + struct amdgpu_preempt_mgr preempt_mgr; uint64_t stolen_vga_size; struct amdgpu_bo *stolen_vga_memory; @@ -97,6 +104,8 @@ struct amdgpu_copy_mem { int amdgpu_gtt_mgr_init(struct amdgpu_device *adev, uint64_t gtt_size); void amdgpu_gtt_mgr_fini(struct amdgpu_device *adev); +int amdgpu_preempt_mgr_init(struct amdgpu_device *adev); +void amdgpu_preempt_mgr_fini(struct amdgpu_device *adev); int amdgpu_vram_mgr_init(struct amdgpu_device *adev); void amdgpu_vram_mgr_fini(struct amdgpu_device *adev); @@ -104,6 +113,8 @@ bool amdgpu_gtt_mgr_has_gart_addr(struct ttm_resource *mem); uint64_t amdgpu_gtt_mgr_usage(struct ttm_resource_manager *man); int amdgpu_gtt_mgr_recover(struct ttm_resource_manager *man); +uint64_t amdgpu_preempt_mgr_usage(struct ttm_resource_manager *man); + u64 amdgpu_vram_mgr_bo_visible_size(struct amdgpu_bo *bo); int amdgpu_vram_mgr_alloc_sgt(struct amdgpu_device *adev, struct ttm_resource *mem, |