21  * struct drm_gem_shmem_object - GEM object backed by shmem
91 	 * @map_wc: map object write-combined (instead of using shmem defaults).
100 void drm_gem_shmem_free(struct drm_gem_shmem_object *shmem);
102 void drm_gem_shmem_put_pages(struct drm_gem_shmem_object *shmem);
103 int drm_gem_shmem_pin(struct drm_gem_shmem_object *shmem);
104 void drm_gem_shmem_unpin(struct drm_gem_shmem_object *shmem);
105 int drm_gem_shmem_vmap(struct drm_gem_shmem_object *shmem,
107 void drm_gem_shmem_vunmap(struct drm_gem_shmem_object *shmem,
109 int drm_gem_shmem_mmap(struct drm_gem_shmem_object *shmem, struct vm_area_struct *vma);
111 int drm_gem_shmem_madvise(struct drm_gem_shmem_object *shmem, int madv);
113 static inline bool drm_gem_shmem_is_purgeable(struct drm_gem_shmem_object *shmem)  in drm_gem_shmem_is_purgeable()  argument
115 	return (shmem->madv > 0) &&  in drm_gem_shmem_is_purgeable()
116 		!shmem->vmap_use_count && shmem->sgt &&  in drm_gem_shmem_is_purgeable()
117 		!shmem->base.dma_buf && !shmem->base.import_attach;  in drm_gem_shmem_is_purgeable()
120 void drm_gem_shmem_purge(struct drm_gem_shmem_object *shmem);
122 struct sg_table *drm_gem_shmem_get_sg_table(struct drm_gem_shmem_object *shmem);
123 struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_shmem_object *shmem);
125 void drm_gem_shmem_print_info(const struct drm_gem_shmem_object *shmem,
138  * This function wraps drm_gem_shmem_free(). Drivers that employ the shmem helpers
143 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_free()  local
145 	drm_gem_shmem_free(shmem);  in drm_gem_shmem_object_free()
154  * This function wraps drm_gem_shmem_print_info(). Drivers that employ the shmem helpers should
160 	const struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_print_info()  local
162 	drm_gem_shmem_print_info(shmem, p, indent);  in drm_gem_shmem_object_print_info()
169  * This function wraps drm_gem_shmem_pin(). Drivers that employ the shmem helpers should
174 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_pin()  local
176 	return drm_gem_shmem_pin(shmem);  in drm_gem_shmem_object_pin()
183  * This function wraps drm_gem_shmem_unpin(). Drivers that employ the shmem helpers should
188 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_unpin()  local
190 	drm_gem_shmem_unpin(shmem);  in drm_gem_shmem_object_unpin()
197  * This function wraps drm_gem_shmem_get_sg_table(). Drivers that employ the shmem helpers should
205 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_get_sg_table()  local
207 	return drm_gem_shmem_get_sg_table(shmem);  in drm_gem_shmem_object_get_sg_table()
213  * @map: Returns the kernel virtual address of the SHMEM GEM object's backing store.
215  * This function wraps drm_gem_shmem_vmap(). Drivers that employ the shmem helpers should
224 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_vmap()  local
226 	return drm_gem_shmem_vmap(shmem, map);  in drm_gem_shmem_object_vmap()
232  * @map: Kernel virtual address where the SHMEM GEM object was mapped
234  * This function wraps drm_gem_shmem_vunmap(). Drivers that employ the shmem helpers should
240 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_vunmap()  local
242 	drm_gem_shmem_vunmap(shmem, map);  in drm_gem_shmem_object_vunmap()
250  * This function wraps drm_gem_shmem_mmap(). Drivers that employ the shmem helpers should
258 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_mmap()  local
260 	return drm_gem_shmem_mmap(shmem, vma);  in drm_gem_shmem_object_mmap()
275  * DRM_GEM_SHMEM_DRIVER_OPS - Default shmem GEM operations
277  * This macro provides a shortcut for setting the shmem GEM operations in