Am 05.03.21 um 15:35 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.das@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 28 ++++++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 12 ++++++++++
2 files changed, 40 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 745393472564..355d01ebce51 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -699,6 +699,34 @@ 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;
+ int r;
+
+ bp->flags = bp->flags & ~AMDGPU_GEM_CREATE_SHADOW;
+ bp->bo_ptr_size = sizeof(struct amdgpu_bo_user);
+ r = amdgpu_bo_do_create(adev, bp, &bo_ptr);
+ if (r)
+ return r;
+
+ *ubo_ptr = (struct amdgpu_bo_user *)bo_ptr;
Maybe use container_of here instead. Even better would be a helper to
upcast a amdgpu_bo pointer into a amdgpu_bo_user pointer.
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..cbb881afe6da 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
@@ -114,6 +114,15 @@ struct amdgpu_bo {
struct kgd_mem *kfd_bo;
};
+struct amdgpu_bo_user {
+ struct amdgpu_bo bo;
+ u64 tiling_flags;
+ u64 metadata_flags;
+ void *metadata;
+ u32 metadata_size;
+
+};
+
static inline struct amdgpu_bo *ttm_to_amdgpu_bo(struct ttm_buffer_object *tbo)
{
return container_of(tbo, struct amdgpu_bo, tbo);
@@ -257,6 +266,9 @@ 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);
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