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drm/amdgpu: Enable P2P dmabuf over XGMI

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Access the exported P2P dmabuf over XGMI, if available.
Otherwise, fall back to the existing PCIe method.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Arunpravin <apaneers@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Arunpravin
2020-08-06 14:34:33 +05:30
committed by Alex Deucher
parent d6e6dfb287
commit 0cf0ee983b
3 changed files with 52 additions and 3 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.h
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@@ -29,6 +29,8 @@ struct dma_buf *amdgpu_gem_prime_export(struct drm_gem_object *gobj,
int flags);
struct drm_gem_object *amdgpu_gem_prime_import(struct drm_device *dev,
struct dma_buf *dma_buf);
bool amdgpu_dmabuf_is_xgmi_accessible(struct amdgpu_device *adev,
struct amdgpu_bo *bo);
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,