Switchtec Userspace PROJECT_NUMBER = 4.2
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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
33uint8_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*/
40uint32_t crc32(const uint8_t *msg_ptr, uint32_t byte_cnt,
41 uint32_t oldchksum, int init, int last);
42
43#endif