21  * struct drm_gem_shmem_object - GEM object backed by shmem
91 	 * @map_wc: map object write-combined (instead of using shmem defaults).
103 void drm_gem_shmem_free(struct drm_gem_shmem_object *shmem);
105 void drm_gem_shmem_put_pages(struct drm_gem_shmem_object *shmem);
106 int drm_gem_shmem_pin(struct drm_gem_shmem_object *shmem);
107 void drm_gem_shmem_unpin(struct drm_gem_shmem_object *shmem);
108 int drm_gem_shmem_vmap(struct drm_gem_shmem_object *shmem,
110 void drm_gem_shmem_vunmap(struct drm_gem_shmem_object *shmem,
112 int drm_gem_shmem_mmap(struct drm_gem_shmem_object *shmem, struct vm_area_struct *vma);
114 int drm_gem_shmem_pin_locked(struct drm_gem_shmem_object *shmem);
115 void drm_gem_shmem_unpin_locked(struct drm_gem_shmem_object *shmem);
117 int drm_gem_shmem_madvise(struct drm_gem_shmem_object *shmem, int madv);
119 static inline bool drm_gem_shmem_is_purgeable(struct drm_gem_shmem_object *shmem)  in drm_gem_shmem_is_purgeable()  argument
121 	return (shmem->madv > 0) &&  in drm_gem_shmem_is_purgeable()
122 		!shmem->vmap_use_count && shmem->sgt &&  in drm_gem_shmem_is_purgeable()
123 		!shmem->base.dma_buf && !shmem->base.import_attach;  in drm_gem_shmem_is_purgeable()
126 void drm_gem_shmem_purge(struct drm_gem_shmem_object *shmem);
128 struct sg_table *drm_gem_shmem_get_sg_table(struct drm_gem_shmem_object *shmem);
129 struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_shmem_object *shmem);
131 void drm_gem_shmem_print_info(const struct drm_gem_shmem_object *shmem,
144  * This function wraps drm_gem_shmem_free(). Drivers that employ the shmem helpers
149 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_free()  local
151 	drm_gem_shmem_free(shmem);  in drm_gem_shmem_object_free()
160  * This function wraps drm_gem_shmem_print_info(). Drivers that employ the shmem helpers should
166 	const struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_print_info()  local
168 	drm_gem_shmem_print_info(shmem, p, indent);  in drm_gem_shmem_object_print_info()
175  * This function wraps drm_gem_shmem_pin(). Drivers that employ the shmem helpers should
180 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_pin()  local
182 	return drm_gem_shmem_pin_locked(shmem);  in drm_gem_shmem_object_pin()
189  * This function wraps drm_gem_shmem_unpin(). Drivers that employ the shmem helpers should
194 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_unpin()  local
196 	drm_gem_shmem_unpin_locked(shmem);  in drm_gem_shmem_object_unpin()
203  * This function wraps drm_gem_shmem_get_sg_table(). Drivers that employ the shmem helpers should
211 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_get_sg_table()  local
213 	return drm_gem_shmem_get_sg_table(shmem);  in drm_gem_shmem_object_get_sg_table()
219  * @map: Returns the kernel virtual address of the SHMEM GEM object's backing store.
221  * This function wraps drm_gem_shmem_vmap(). Drivers that employ the shmem helpers should
230 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_vmap()  local
232 	return drm_gem_shmem_vmap(shmem, map);  in drm_gem_shmem_object_vmap()
238  * @map: Kernel virtual address where the SHMEM GEM object was mapped
240  * This function wraps drm_gem_shmem_vunmap(). Drivers that employ the shmem helpers should
246 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_vunmap()  local
248 	drm_gem_shmem_vunmap(shmem, map);  in drm_gem_shmem_object_vunmap()
256  * This function wraps drm_gem_shmem_mmap(). Drivers that employ the shmem helpers should
264 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);  in drm_gem_shmem_object_mmap()  local
266 	return drm_gem_shmem_mmap(shmem, vma);  in drm_gem_shmem_object_mmap()
281  * DRM_GEM_SHMEM_DRIVER_OPS - Default shmem GEM operations
283  * This macro provides a shortcut for setting the shmem GEM operations in