1ad8b1aafSjsg /* SPDX-License-Identifier: MIT */ 2ad8b1aafSjsg /* 3ad8b1aafSjsg * Copyright © 2020 Intel Corporation 4ad8b1aafSjsg */ 5ad8b1aafSjsg 6ad8b1aafSjsg #ifndef SHMEM_UTILS_H 7ad8b1aafSjsg #define SHMEM_UTILS_H 8ad8b1aafSjsg 9ad8b1aafSjsg #include <linux/types.h> 10ad8b1aafSjsg 111bb76ff1Sjsg struct iosys_map; 12ad8b1aafSjsg struct drm_i915_gem_object; 13ad8b1aafSjsg #ifdef __linux__ 14ad8b1aafSjsg struct file; 15ad8b1aafSjsg 16ad8b1aafSjsg struct file *shmem_create_from_data(const char *name, void *data, size_t len); 17ad8b1aafSjsg struct file *shmem_create_from_object(struct drm_i915_gem_object *obj); 18ad8b1aafSjsg 19ad8b1aafSjsg void *shmem_pin_map(struct file *file); 20ad8b1aafSjsg void shmem_unpin_map(struct file *file, void *ptr); 21ad8b1aafSjsg 221bb76ff1Sjsg int shmem_read_to_iosys_map(struct file *file, loff_t off, 231bb76ff1Sjsg struct iosys_map *map, size_t map_off, size_t len); 24ad8b1aafSjsg int shmem_read(struct file *file, loff_t off, void *dst, size_t len); 25ad8b1aafSjsg int shmem_write(struct file *file, loff_t off, void *src, size_t len); 26ad8b1aafSjsg #endif /* __linux__ */ 27ad8b1aafSjsg 28ad8b1aafSjsg struct uvm_object * 29ad8b1aafSjsg uao_create_from_object(struct drm_i915_gem_object *); 30*0a503edeSjsg int uao_read_to_iosys_map(struct uvm_object *, loff_t, 31*0a503edeSjsg struct iosys_map *, size_t, size_t); 32ad8b1aafSjsg int uao_read(struct uvm_object *, loff_t, void *, size_t); 33ad8b1aafSjsg int uao_write(struct uvm_object *, loff_t, void *, size_t); 34ad8b1aafSjsg 35ad8b1aafSjsg #endif /* SHMEM_UTILS_H */ 36