Implement a new struct amdgpu_bo_dmabuf as subclass of
struct amdgpu_bo and a function to create amdgpu_bo_dmabuf
bo.
Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 30 ++++++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 9 +++++++
2 files changed, 39 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index fdf23e439b42..fa4686fe95c4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -727,6 +727,36 @@ int amdgpu_bo_create_user(struct amdgpu_device *adev,
*ubo_ptr = to_amdgpu_bo_user(bo_ptr);
return r;
}
+
+/**
+ * amdgpu_bo_create_dmabuf - create an &amdgpu_bo_dmabuf 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 prime BO export;
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+
+int amdgpu_bo_create_dmabuf(struct amdgpu_device *adev,
+ struct amdgpu_bo_param *bp,
+ struct amdgpu_bo_dmabuf **dbo_ptr)
+{
+ struct amdgpu_bo *bo_ptr;
+ int r;
+
+ bp->flags = bp->flags & ~AMDGPU_GEM_CREATE_SHADOW;
+ bp->bo_ptr_size = sizeof(struct amdgpu_bo_dmabuf);
+ r = amdgpu_bo_do_create(adev, bp, &bo_ptr);
+ if (r)
+ return r;
+
+ *dbo_ptr = to_amdgpu_bo_dmabuf(bo_ptr);
+ 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 25411b2c4dd9..4b9339c3f3eb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
@@ -38,6 +38,7 @@
#define AMDGPU_BO_MAX_PLACEMENTS 3
#define to_amdgpu_bo_user(abo) container_of((abo), struct amdgpu_bo_user, bo)
+#define to_amdgpu_bo_dmabuf(abo) container_of((abo), struct amdgpu_bo_dmabuf, bo)
struct amdgpu_bo_param {
unsigned long size;
@@ -119,6 +120,11 @@ struct amdgpu_bo_user {
};
+struct amdgpu_bo_dmabuf {
+ struct amdgpu_bo bo;
+ unsigned int prime_shared_count;
+};
+
static inline struct amdgpu_bo *ttm_to_amdgpu_bo(struct ttm_buffer_object *tbo)
{
return container_of(tbo, struct amdgpu_bo, tbo);
@@ -265,6 +271,9 @@ int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev,
int amdgpu_bo_create_user(struct amdgpu_device *adev,
struct amdgpu_bo_param *bp,
struct amdgpu_bo_user **ubo_ptr);
+int amdgpu_bo_create_dmabuf(struct amdgpu_device *adev,
+ struct amdgpu_bo_param *bp,
+ struct amdgpu_bo_dmabuf **dbo_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);
--
2.30.1
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