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      1 /*
      2  *  ion.c
      3  *
      4  * Memory Allocator functions for ion
      5  *
      6  *   Copyright 2011 Google, Inc
      7  *
      8  *  Licensed under the Apache License, Version 2.0 (the "License");
      9  *  you may not use this file except in compliance with the License.
     10  *  You may obtain a copy of the License at
     11  *
     12  *      http://www.apache.org/licenses/LICENSE-2.0
     13  *
     14  *  Unless required by applicable law or agreed to in writing, software
     15  *  distributed under the License is distributed on an "AS IS" BASIS,
     16  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     17  *  See the License for the specific language governing permissions and
     18  *  limitations under the License.
     19  */
     20 
     21 #ifndef __SYS_CORE_ION_H
     22 #define __SYS_CORE_ION_H
     23 
     24 #include <sys/types.h>
     25 #include <linux/ion.h>
     26 
     27 __BEGIN_DECLS
     28 
     29 struct ion_handle;
     30 
     31 int ion_open();
     32 int ion_close(int fd);
     33 int ion_alloc(int fd, size_t len, size_t align, unsigned int heap_mask,
     34               unsigned int flags, ion_user_handle_t *handle);
     35 int ion_alloc_fd(int fd, size_t len, size_t align, unsigned int heap_mask,
     36               unsigned int flags, int *handle_fd);
     37 int ion_sync_fd(int fd, int handle_fd);
     38 int ion_free(int fd, ion_user_handle_t handle);
     39 int ion_map(int fd, ion_user_handle_t handle, size_t length, int prot,
     40             int flags, off_t offset, unsigned char **ptr, int *map_fd);
     41 int ion_share(int fd, ion_user_handle_t handle, int *share_fd);
     42 int ion_import(int fd, int share_fd, ion_user_handle_t *handle);
     43 
     44 __END_DECLS
     45 
     46 #endif /* __SYS_CORE_ION_H */
     47