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drm/amdgpu: Add gem_prime_mmap support

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v2: drop hdp invalidate/flush.
v3: honor pgoff during prime mmap. Add a barrier after cpu access.
v4: drop begin/end_cpu_access() for now, revisit later.

Signed-off-by: Samuel Li <Samuel.Li@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Samuel Li
2017-08-22 15:25:33 -04:00
committed by Alex Deucher
parent aec8d5cc28
commit dfced2e4bc
3 changed files with 36 additions and 0 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@@ -413,6 +413,7 @@ void amdgpu_gem_prime_unpin(struct drm_gem_object *obj);
struct reservation_object *amdgpu_gem_prime_res_obj(struct drm_gem_object *);
void *amdgpu_gem_prime_vmap(struct drm_gem_object *obj);
void amdgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
int amdgpu_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
int amdgpu_gem_debugfs_init(struct amdgpu_device *adev);
/* sub-allocation manager, it has to be protected by another lock.