Am 05.03.21 um 13:56 schrieb Nirmoy Das:
Implement a new struct amdgpu_bo_user as subclass of struct amdgpu_bo and a function to created amdgpu_bo_user bo with a flag to identify the owner. Signed-off-by: Nirmoy Das <nirmoy....@amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 44 ++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 9 +++++ include/uapi/drm/amdgpu_drm.h | 2 + 3 files changed, 55 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 745393472564..f21679f38383 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -699,6 +699,50 @@ int amdgpu_bo_create(struct amdgpu_device *adev, return r; }+/**+ * amdgpu_bo_create_user - create an &amdgpu_bo_user buffer object + * @adev: amdgpu device object + * @bp: parameters to be used for the buffer object + * @ubo_ptr: pointer to the buffer object pointer + * + * Create a BO to be used by user application; + * + * Returns: + * 0 for success or a negative error code on failure. + */ + +int amdgpu_bo_create_user(struct amdgpu_device *adev, + struct amdgpu_bo_param *bp, + struct amdgpu_bo_user **ubo_ptr) +{ + struct amdgpu_bo *bo_ptr; + u64 flags = bp->flags; + int r; + + bp->flags = bp->flags & ~AMDGPU_GEM_CREATE_SHADOW; + bp->flags = bp->flags | AMDGPU_GEM_CREATE_USER; + bp->bo_ptr_size = sizeof(struct amdgpu_bo); + r = amdgpu_bo_do_create(adev, bp, &bo_ptr); + if (r) + return r; + + *ubo_ptr = (struct amdgpu_bo_user *)bo_ptr; + if ((flags & AMDGPU_GEM_CREATE_SHADOW) && !(adev->flags & AMD_IS_APU)) { + if (!bp->resv) + WARN_ON(dma_resv_lock((*ubo_ptr)->bo.tbo.base.resv, + NULL)); + + r = amdgpu_bo_create_shadow(adev, bp->size, bo_ptr); + + if (!bp->resv) + dma_resv_unlock((*ubo_ptr)->bo.tbo.base.resv); + + if (r) + ttm_bo_put(&(*ubo_ptr)->bo.tbo); + }
The shadows handling is specific for VM BOs and not necessary for BOs which are used by userspace.
Regards, Christian.
+ + return r; +} /** * amdgpu_bo_validate - validate an &amdgpu_bo buffer object * @bo: pointer to the buffer object diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h index 848dc0a017dd..332e269c3fd1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h @@ -114,6 +114,12 @@ struct amdgpu_bo { struct kgd_mem *kfd_bo; };+struct amdgpu_bo_user {+ struct amdgpu_bo bo; + u64 tiling_flags; + +}; + static inline struct amdgpu_bo *ttm_to_amdgpu_bo(struct ttm_buffer_object *tbo) { return container_of(tbo, struct amdgpu_bo, tbo); @@ -257,6 +263,9 @@ int amdgpu_bo_create_kernel(struct amdgpu_device *adev, int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev, uint64_t offset, uint64_t size, uint32_t domain, struct amdgpu_bo **bo_ptr, void **cpu_addr); +int amdgpu_bo_create_user(struct amdgpu_device *adev, + struct amdgpu_bo_param *bp, + struct amdgpu_bo_user **ubo_ptr); void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr, void **cpu_addr); int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr); diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h index 8b832f7458f2..9b9a4ac6f00f 100644 --- a/include/uapi/drm/amdgpu_drm.h +++ b/include/uapi/drm/amdgpu_drm.h @@ -141,6 +141,8 @@ extern "C" { * accessing it with various hw blocks */ #define AMDGPU_GEM_CREATE_ENCRYPTED (1 << 10) +/* Flag that indicates the BO is created for userspace */ +#define AMDGPU_GEM_CREATE_USER (1 << 11)struct drm_amdgpu_gem_create_in {/** the requested memory size */
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