mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-09 10:25:20 +02:00
90fba37c49
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10137 3c298f89-4303-0410-b956-a3cf2f4a3e73
106 lines
3.9 KiB
C
106 lines
3.9 KiB
C
/*
|
|
* Driver O/S-independent utility routines
|
|
*
|
|
* Copyright 2007, Broadcom Corporation
|
|
* All Rights Reserved.
|
|
*
|
|
* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
|
|
* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
|
|
* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
|
|
* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
|
|
* $Id$
|
|
*/
|
|
|
|
#include <typedefs.h>
|
|
#include <bcmdefs.h>
|
|
#include <stdarg.h>
|
|
#include <osl.h>
|
|
#include <sbutils.h>
|
|
#include <bcmendian.h>
|
|
#include "utils.h"
|
|
|
|
/*******************************************************************************
|
|
* crc8
|
|
*
|
|
* Computes a crc8 over the input data using the polynomial:
|
|
*
|
|
* x^8 + x^7 +x^6 + x^4 + x^2 + 1
|
|
*
|
|
* The caller provides the initial value (either CRC8_INIT_VALUE
|
|
* or the previous returned value) to allow for processing of
|
|
* discontiguous blocks of data. When generating the CRC the
|
|
* caller is responsible for complementing the final return value
|
|
* and inserting it into the byte stream. When checking, a final
|
|
* return value of CRC8_GOOD_VALUE indicates a valid CRC.
|
|
*
|
|
* Reference: Dallas Semiconductor Application Note 27
|
|
* Williams, Ross N., "A Painless Guide to CRC Error Detection Algorithms",
|
|
* ver 3, Aug 1993, ross@guest.adelaide.edu.au, Rocksoft Pty Ltd.,
|
|
* ftp://ftp.rocksoft.com/clients/rocksoft/papers/crc_v3.txt
|
|
*
|
|
* ****************************************************************************
|
|
*/
|
|
|
|
static const uint8 crc8_table[256] = {
|
|
0x00, 0xF7, 0xB9, 0x4E, 0x25, 0xD2, 0x9C, 0x6B,
|
|
0x4A, 0xBD, 0xF3, 0x04, 0x6F, 0x98, 0xD6, 0x21,
|
|
0x94, 0x63, 0x2D, 0xDA, 0xB1, 0x46, 0x08, 0xFF,
|
|
0xDE, 0x29, 0x67, 0x90, 0xFB, 0x0C, 0x42, 0xB5,
|
|
0x7F, 0x88, 0xC6, 0x31, 0x5A, 0xAD, 0xE3, 0x14,
|
|
0x35, 0xC2, 0x8C, 0x7B, 0x10, 0xE7, 0xA9, 0x5E,
|
|
0xEB, 0x1C, 0x52, 0xA5, 0xCE, 0x39, 0x77, 0x80,
|
|
0xA1, 0x56, 0x18, 0xEF, 0x84, 0x73, 0x3D, 0xCA,
|
|
0xFE, 0x09, 0x47, 0xB0, 0xDB, 0x2C, 0x62, 0x95,
|
|
0xB4, 0x43, 0x0D, 0xFA, 0x91, 0x66, 0x28, 0xDF,
|
|
0x6A, 0x9D, 0xD3, 0x24, 0x4F, 0xB8, 0xF6, 0x01,
|
|
0x20, 0xD7, 0x99, 0x6E, 0x05, 0xF2, 0xBC, 0x4B,
|
|
0x81, 0x76, 0x38, 0xCF, 0xA4, 0x53, 0x1D, 0xEA,
|
|
0xCB, 0x3C, 0x72, 0x85, 0xEE, 0x19, 0x57, 0xA0,
|
|
0x15, 0xE2, 0xAC, 0x5B, 0x30, 0xC7, 0x89, 0x7E,
|
|
0x5F, 0xA8, 0xE6, 0x11, 0x7A, 0x8D, 0xC3, 0x34,
|
|
0xAB, 0x5C, 0x12, 0xE5, 0x8E, 0x79, 0x37, 0xC0,
|
|
0xE1, 0x16, 0x58, 0xAF, 0xC4, 0x33, 0x7D, 0x8A,
|
|
0x3F, 0xC8, 0x86, 0x71, 0x1A, 0xED, 0xA3, 0x54,
|
|
0x75, 0x82, 0xCC, 0x3B, 0x50, 0xA7, 0xE9, 0x1E,
|
|
0xD4, 0x23, 0x6D, 0x9A, 0xF1, 0x06, 0x48, 0xBF,
|
|
0x9E, 0x69, 0x27, 0xD0, 0xBB, 0x4C, 0x02, 0xF5,
|
|
0x40, 0xB7, 0xF9, 0x0E, 0x65, 0x92, 0xDC, 0x2B,
|
|
0x0A, 0xFD, 0xB3, 0x44, 0x2F, 0xD8, 0x96, 0x61,
|
|
0x55, 0xA2, 0xEC, 0x1B, 0x70, 0x87, 0xC9, 0x3E,
|
|
0x1F, 0xE8, 0xA6, 0x51, 0x3A, 0xCD, 0x83, 0x74,
|
|
0xC1, 0x36, 0x78, 0x8F, 0xE4, 0x13, 0x5D, 0xAA,
|
|
0x8B, 0x7C, 0x32, 0xC5, 0xAE, 0x59, 0x17, 0xE0,
|
|
0x2A, 0xDD, 0x93, 0x64, 0x0F, 0xF8, 0xB6, 0x41,
|
|
0x60, 0x97, 0xD9, 0x2E, 0x45, 0xB2, 0xFC, 0x0B,
|
|
0xBE, 0x49, 0x07, 0xF0, 0x9B, 0x6C, 0x22, 0xD5,
|
|
0xF4, 0x03, 0x4D, 0xBA, 0xD1, 0x26, 0x68, 0x9F
|
|
};
|
|
|
|
#define CRC_INNER_LOOP(n, c, x) \
|
|
(c) = ((c) >> 8) ^ crc##n##_table[((c) ^ (x)) & 0xff]
|
|
|
|
|
|
uint8 hndcrc8 (uint8 * pdata, /* pointer to array of data to process */
|
|
uint nbytes, /* number of input data bytes to process */
|
|
uint8 crc /* either CRC8_INIT_VALUE or previous return value */
|
|
)
|
|
{
|
|
/* hard code the crc loop instead of using CRC_INNER_LOOP macro
|
|
* to avoid the undefined and unnecessary (uint8 >> 8) operation.
|
|
*/
|
|
while (nbytes-- > 0)
|
|
crc = crc8_table[(crc ^ *pdata++) & 0xff];
|
|
|
|
return crc;
|
|
}
|
|
|
|
char *
|
|
bcm_ether_ntoa (struct ether_addr *ea, char *buf)
|
|
{
|
|
snprintf (buf, 18, "%02x:%02x:%02x:%02x:%02x:%02x",
|
|
ea->octet[0] & 0xff, ea->octet[1] & 0xff, ea->octet[2] & 0xff,
|
|
ea->octet[3] & 0xff, ea->octet[4] & 0xff, ea->octet[5] & 0xff);
|
|
return (buf);
|
|
}
|
|
|