[PATCH 2/5] drm/amdgpu: introduce struct amdgpu_bo_user

[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 | 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 1ff8c3570c82..09d3394350a6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -705,6 +705,34 @@ 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;
+       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..177ae825006c 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);
-- 
2.30.1

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