| 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 | #include "../lib/types.h" |
| 23 | |
| 24 | extern uint32_t crc32c_sw(unsigned char const *, unsigned long); |
| 25 | extern bool crc32c_arm64_available; |
| 26 | extern bool crc32c_intel_available; |
| 27 | |
| 28 | #ifdef ARCH_HAVE_ARM64_CRC_CRYPTO |
| 29 | extern uint32_t crc32c_arm64(unsigned char const *, unsigned long); |
| 30 | extern void crc32c_arm64_probe(void); |
| 31 | #else |
| 32 | #define crc32c_arm64 crc32c_sw |
| 33 | static inline void crc32c_arm64_probe(void) |
| 34 | { |
| 35 | } |
| 36 | #endif |
| 37 | |
| 38 | #ifdef ARCH_HAVE_SSE4_2 |
| 39 | extern uint32_t crc32c_intel(unsigned char const *, unsigned long); |
| 40 | extern void crc32c_intel_probe(void); |
| 41 | #else |
| 42 | #define crc32c_intel crc32c_sw |
| 43 | static inline void crc32c_intel_probe(void) |
| 44 | { |
| 45 | } |
| 46 | #endif |
| 47 | |
| 48 | static inline uint32_t fio_crc32c(unsigned char const *buf, unsigned long len) |
| 49 | { |
| 50 | if (crc32c_arm64_available) |
| 51 | return crc32c_arm64(buf, len); |
| 52 | |
| 53 | if (crc32c_intel_available) |
| 54 | return crc32c_intel(buf, len); |
| 55 | |
| 56 | return crc32c_sw(buf, len); |
| 57 | } |
| 58 | |
| 59 | #endif |