1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright © 2020 Intel Corporation 4 */ 5 6 #ifndef SHMEM_UTILS_H 7 #define SHMEM_UTILS_H 8 9 #include <linux/types.h> 10 11 struct iosys_map; 12 struct drm_i915_gem_object; 13 struct file; 14 15 struct file *shmem_create_from_data(const char *name, void *data, size_t len); 16 struct file *shmem_create_from_object(struct drm_i915_gem_object *obj); 17 18 void *shmem_pin_map(struct file *file); 19 void shmem_unpin_map(struct file *file, void *ptr); 20 21 int shmem_read_to_iosys_map(struct file *file, loff_t off, 22 struct iosys_map *map, size_t map_off, size_t len); 23 int shmem_read(struct file *file, loff_t off, void *dst, size_t len); 24 int shmem_write(struct file *file, loff_t off, void *src, size_t len); 25 26 #endif /* SHMEM_UTILS_H */ 27