Switchtec Userspace  PROJECT_NUMBER = 3.1
crc.h
1 /*
2  * Microsemi Switchtec(tm) PCIe Management Library
3  * Copyright (c) 2017, Microsemi Corporation
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining a
6  * copy of this software and associated documentation files (the "Software"),
7  * to deal in the Software without restriction, including without limitation
8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9  * and/or sell copies of the Software, and to permit persons to whom the
10  * Software is furnished to do so, subject to the following conditions:
11  *
12  * The above copyright notice and this permission notice shall be included
13  * in all copies or substantial portions of the Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
19  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21  * OTHER DEALINGS IN THE SOFTWARE.
22  *
23  */
24 
25 
26 #ifndef CRC_H
27 #define CRC_H
28 
29 
30 #include <stdint.h>
31 #include <stdbool.h>
32 
33 uint8_t crc8(uint8_t *msg_ptr, uint32_t byte_cnt, uint32_t oldchksum,
34  bool init);
35 
36 /*
37 * This is an implementation of CRC-32/CKSUM:
38 * x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x^1+1
39 */
40 uint32_t crc32(const uint8_t *msg_ptr, uint32_t byte_cnt,
41  uint32_t oldchksum, int init, int last);
42 
43 #endif