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bac39e0e JA |
1 | /* crc32c -- calculate and POSIX.2 checksum |
2 | Copyright (C) 92, 1995-1999 Free Software Foundation, Inc. | |
3 | ||
4 | This program is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 2, or (at your option) | |
7 | any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
15 | along with this program; if not, write to the Free Software Foundation, | |
16 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
17 | ||
18 | #ifndef CRC32C_H | |
19 | #define CRC32C_H | |
20 | ||
419484b9 AC |
21 | #include "../arch/arch.h" |
22 | ||
e3aaafc4 JA |
23 | extern uint32_t crc32c_sw(unsigned char const *, unsigned long); |
24 | extern int crc32c_intel_available; | |
419484b9 | 25 | |
2f68124f | 26 | #ifdef ARCH_HAVE_SSE4_2 |
3845591f | 27 | extern uint32_t crc32c_intel(unsigned char const *, unsigned long); |
e3aaafc4 | 28 | extern void crc32c_intel_probe(void); |
419484b9 | 29 | #else |
e3aaafc4 JA |
30 | #define crc32c_intel crc32c_sw |
31 | static inline void crc32c_intel_probe(void) | |
5d7c5d34 | 32 | { |
5d7c5d34 | 33 | } |
419484b9 | 34 | #endif |
bac39e0e | 35 | |
25dfa848 | 36 | static inline uint32_t fio_crc32c(unsigned char const *buf, unsigned long len) |
e3aaafc4 JA |
37 | { |
38 | if (crc32c_intel_available) | |
39 | return crc32c_intel(buf, len); | |
40 | ||
41 | return crc32c_sw(buf, len); | |
42 | } | |
43 | ||
bac39e0e | 44 | #endif |