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_pin_locked(struct drm_gem_shmem_object *shmem);
112 void drm_gem_shmem_unpin_locked(struct drm_gem_shmem_object *shmem);
114 int drm_gem_shmem_madvise(struct drm_gem_shmem_object *shmem, int madv);
116 static inline bool drm_gem_shmem_is_purgeable(struct drm_gem_shmem_object *shmem)  in drm_gem_shmem_is_purgeable()  argument
118 	return (shmem->madv > 0) &&  in drm_gem_shmem_is_purgeable()
119 		!shmem->vmap_use_count && shmem->sgt &&  in drm_gem_shmem_is_purgeable()
120 		!shmem->base.dma_buf && !shmem->base.import_attach;  in drm_gem_shmem_is_purgeable()
123 void drm_gem_shmem_purge(struct drm_gem_shmem_object *shmem);
125 struct sg_table *drm_gem_shmem_get_sg_table(struct drm_gem_shmem_object *shmem);
126 struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_shmem_object *shmem);
128 void drm_gem_shmem_print_info(const struct drm_gem_shmem_object *shmem,
141  * This function wraps drm_gem_shmem_free(). Drivers that employ the shmem helpers
146 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_free()  local
148 	drm_gem_shmem_free(shmem);  in drm_gem_shmem_object_free()
157  * This function wraps drm_gem_shmem_print_info(). Drivers that employ the shmem helpers should
163 	const struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_print_info()  local
165 	drm_gem_shmem_print_info(shmem, p, indent);  in drm_gem_shmem_object_print_info()
172  * This function wraps drm_gem_shmem_pin(). Drivers that employ the shmem helpers should
177 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_pin()  local
179 	return drm_gem_shmem_pin_locked(shmem);  in drm_gem_shmem_object_pin()
186  * This function wraps drm_gem_shmem_unpin(). Drivers that employ the shmem helpers should
191 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_unpin()  local
193 	drm_gem_shmem_unpin_locked(shmem);  in drm_gem_shmem_object_unpin()
200  * This function wraps drm_gem_shmem_get_sg_table(). Drivers that employ the shmem helpers should
208 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_get_sg_table()  local
210 	return drm_gem_shmem_get_sg_table(shmem);  in drm_gem_shmem_object_get_sg_table()
216  * @map: Returns the kernel virtual address of the SHMEM GEM object's backing store.
218  * This function wraps drm_gem_shmem_vmap(). Drivers that employ the shmem helpers should
227 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_vmap()  local
229 	return drm_gem_shmem_vmap(shmem, map);  in drm_gem_shmem_object_vmap()
235  * @map: Kernel virtual address where the SHMEM GEM object was mapped
237  * This function wraps drm_gem_shmem_vunmap(). Drivers that employ the shmem helpers should
243 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_vunmap()  local
245 	drm_gem_shmem_vunmap(shmem, map);  in drm_gem_shmem_object_vunmap()
253  * This function wraps drm_gem_shmem_mmap(). Drivers that employ the shmem helpers should
261 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_mmap()  local
263 	return drm_gem_shmem_mmap(shmem, vma);  in drm_gem_shmem_object_mmap()
278  * DRM_GEM_SHMEM_DRIVER_OPS - Default shmem GEM operations
280  * This macro provides a shortcut for setting the shmem GEM operations in