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| author | Christian König <christian.koenig@amd.com> | 2016-09-05 17:00:57 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-09-14 21:10:30 +0200 |
| commit | c855e25090cdafffb87119028eb018030a46dd9e (patch) | |
| tree | 237c294ebfb71d5971e60f15cda0c007dd46d30b /drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | |
| parent | drm/amdgpu: fix GTT offset handling (diff) | |
| download | linux-c855e25090cdafffb87119028eb018030a46dd9e.tar.xz linux-c855e25090cdafffb87119028eb018030a46dd9e.zip | |
drm/amdgpu: bind GTT on demand
We don't really need the GTT table any more most of the time. So bind it
only on demand.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index a4914b788517..73298fadd7f3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -256,8 +256,12 @@ static int amdgpu_move_blit(struct ttm_buffer_object *bo, new_start = new_mem->start << PAGE_SHIFT; switch (old_mem->mem_type) { - case TTM_PL_VRAM: case TTM_PL_TT: + r = amdgpu_ttm_bind(bo->ttm, old_mem); + if (r) + return r; + + case TTM_PL_VRAM: old_start += bo->bdev->man[old_mem->mem_type].gpu_offset; break; default: @@ -265,8 +269,12 @@ static int amdgpu_move_blit(struct ttm_buffer_object *bo, return -EINVAL; } switch (new_mem->mem_type) { - case TTM_PL_VRAM: case TTM_PL_TT: + r = amdgpu_ttm_bind(bo->ttm, new_mem); + if (r) + return r; + + case TTM_PL_VRAM: new_start += bo->bdev->man[new_mem->mem_type].gpu_offset; break; default: @@ -638,7 +646,6 @@ static int amdgpu_ttm_backend_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem) { struct amdgpu_ttm_tt *gtt = (void*)ttm; - uint32_t flags = amdgpu_ttm_tt_pte_flags(gtt->adev, ttm, bo_mem); int r; if (gtt->userptr) { @@ -659,6 +666,26 @@ static int amdgpu_ttm_backend_bind(struct ttm_tt *ttm, bo_mem->mem_type == AMDGPU_PL_OA) return -EINVAL; + return 0; +} + +bool amdgpu_ttm_is_bound(struct ttm_tt *ttm) +{ + struct amdgpu_ttm_tt *gtt = (void *)ttm; + + return gtt && !list_empty(>t->list); +} + +int amdgpu_ttm_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem) +{ + struct amdgpu_ttm_tt *gtt = (void *)ttm; + uint32_t flags; + int r; + + if (!ttm || amdgpu_ttm_is_bound(ttm)) + return 0; + + flags = amdgpu_ttm_tt_pte_flags(gtt->adev, ttm, bo_mem); r = amdgpu_gart_bind(gtt->adev, gtt->offset, ttm->num_pages, ttm->pages, gtt->ttm.dma_address, flags); |