| Markus Klotzbuecher | 387f541 | 2006-03-30 13:40:55 +0200 | [diff] [blame^] | 1 | //========================================================================== |
| 2 | // |
| 3 | // crc.h |
| 4 | // |
| 5 | // Interface for the CRC algorithms. |
| 6 | // |
| 7 | //========================================================================== |
| 8 | //####ECOSGPLCOPYRIGHTBEGIN#### |
| 9 | // ------------------------------------------- |
| 10 | // This file is part of eCos, the Embedded Configurable Operating System. |
| 11 | // Copyright (C) 2002 Andrew Lunn |
| 12 | // |
| 13 | // eCos is free software; you can redistribute it and/or modify it under |
| 14 | // the terms of the GNU General Public License as published by the Free |
| 15 | // Software Foundation; either version 2 or (at your option) any later version. |
| 16 | // |
| 17 | // eCos is distributed in the hope that it will be useful, but WITHOUT ANY |
| 18 | // WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 19 | // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 20 | // for more details. |
| 21 | // |
| 22 | // You should have received a copy of the GNU General Public License along |
| 23 | // with eCos; if not, write to the Free Software Foundation, Inc., |
| 24 | // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
| 25 | // |
| 26 | // As a special exception, if other files instantiate templates or use macros |
| 27 | // or inline functions from this file, or you compile this file and link it |
| 28 | // with other works to produce a work based on this file, this file does not |
| 29 | // by itself cause the resulting work to be covered by the GNU General Public |
| 30 | // License. However the source code for this file must still be made available |
| 31 | // in accordance with section (3) of the GNU General Public License. |
| 32 | // |
| 33 | // This exception does not invalidate any other reasons why a work based on |
| 34 | // this file might be covered by the GNU General Public License. |
| 35 | // |
| 36 | // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. |
| 37 | // at http://sources.redhat.com/ecos/ecos-license/ |
| 38 | // ------------------------------------------- |
| 39 | //####ECOSGPLCOPYRIGHTEND#### |
| 40 | //========================================================================== |
| 41 | //#####DESCRIPTIONBEGIN#### |
| 42 | // |
| 43 | // Author(s): Andrew Lunn |
| 44 | // Contributors: Andrew Lunn |
| 45 | // Date: 2002-08-06 |
| 46 | // Purpose: |
| 47 | // Description: |
| 48 | // |
| 49 | // This code is part of eCos (tm). |
| 50 | // |
| 51 | //####DESCRIPTIONEND#### |
| 52 | // |
| 53 | //========================================================================== |
| 54 | |
| 55 | #ifndef _SERVICES_CRC_CRC_H_ |
| 56 | #define _SERVICES_CRC_CRC_H_ |
| 57 | |
| 58 | #include <linux/types.h> |
| 59 | |
| 60 | #ifndef __externC |
| 61 | # ifdef __cplusplus |
| 62 | # define __externC extern "C" |
| 63 | # else |
| 64 | # define __externC extern |
| 65 | # endif |
| 66 | #endif |
| 67 | |
| 68 | // Compute a CRC, using the POSIX 1003 definition |
| 69 | extern uint32_t |
| 70 | cyg_posix_crc32(unsigned char *s, int len); |
| 71 | |
| 72 | // Gary S. Brown's 32 bit CRC |
| 73 | |
| 74 | extern uint32_t |
| 75 | cyg_crc32(unsigned char *s, int len); |
| 76 | |
| 77 | // Gary S. Brown's 32 bit CRC, but accumulate the result from a |
| 78 | // previous CRC calculation |
| 79 | |
| 80 | extern uint32_t |
| 81 | cyg_crc32_accumulate(uint32_t crc, unsigned char *s, int len); |
| 82 | |
| 83 | // Ethernet FCS Algorithm |
| 84 | |
| 85 | extern uint32_t |
| 86 | cyg_ether_crc32(unsigned char *s, int len); |
| 87 | |
| 88 | // Ethernet FCS algorithm, but accumulate the result from a previous |
| 89 | // CRC calculation. |
| 90 | |
| 91 | extern uint32_t |
| 92 | cyg_ether_crc32_accumulate(uint32_t crc, unsigned char *s, int len); |
| 93 | |
| 94 | // 16 bit CRC with polynomial x^16+x^12+x^5+1 |
| 95 | |
| 96 | extern uint16_t cyg_crc16(unsigned char *s, int len); |
| 97 | |
| 98 | #endif // _SERVICES_CRC_CRC_H_ |
| 99 | |
| 100 | |
| 101 | |