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
21#include "../arch/arch.h"
22
23extern uint32_t crc32c_sw(unsigned char const *, unsigned long);
24extern int crc32c_intel_available;
25
26#ifdef ARCH_HAVE_SSE4_2
27extern uint32_t crc32c_intel(unsigned char const *, unsigned long);
28extern void crc32c_intel_probe(void);
29#else
30#define crc32c_intel crc32c_sw
31static inline void crc32c_intel_probe(void)
32{
33}
34#endif
35
36static inline uint32_t fio_crc32c(unsigned char const *buf, unsigned long len)
37{
38	if (crc32c_intel_available)
39		return crc32c_intel(buf, len);
40
41	return crc32c_sw(buf, len);
42}
43
44#endif
45