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| author | Oak Zeng <Oak.Zeng@amd.com> | 2020-08-05 10:53:09 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-09-15 17:52:42 -0400 |
| commit | 91b5900507871c735a99842ebfe959dd33a66690 (patch) | |
| tree | 2c5c6e9b69a391755c105984c4bb05fb4bce9075 /drivers | |
| parent | ce87c98db428e779bf19c9cedc850fda22d58576 (diff) | |
drm/amdgpu: Add comment to function amdgpu_ttm_alloc_gart
Add comments to refect what function does
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Christian Konig <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index a18dc878339a..257a1bab0147 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -1155,7 +1155,12 @@ static int amdgpu_ttm_backend_bind(struct ttm_tt *ttm, } /** - * amdgpu_ttm_alloc_gart - Allocate GART memory for buffer object + * amdgpu_ttm_alloc_gart - Make sure buffer object is accessible either + * through AGP or GART aperture. + * + * If bo is accessible through AGP aperture, then use AGP aperture + * to access bo; otherwise allocate logical space in GART aperture + * and map bo to GART aperture. */ int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo) { |