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 #ifdef __linux__ 14 struct file; 15 16 struct file *shmem_create_from_data(const char *name, void *data, size_t len); 17 struct file *shmem_create_from_object(struct drm_i915_gem_object *obj); 18 19 void *shmem_pin_map(struct file *file); 20 void shmem_unpin_map(struct file *file, void *ptr); 21 22 int shmem_read_to_iosys_map(struct file *file, loff_t off, 23 struct iosys_map *map, size_t map_off, size_t len); 24 int shmem_read(struct file *file, loff_t off, void *dst, size_t len); 25 int shmem_write(struct file *file, loff_t off, void *src, size_t len); 26 #endif /* __linux__ */ 27 28 struct uvm_object * 29 uao_create_from_object(struct drm_i915_gem_object *); 30 int uao_read_to_iosys_map(struct uvm_object *, loff_t, 31 struct iosys_map *, size_t, size_t); 32 int uao_read(struct uvm_object *, loff_t, void *, size_t); 33 int uao_write(struct uvm_object *, loff_t, void *, size_t); 34 35 #endif /* SHMEM_UTILS_H */ 36