diff options
Diffstat (limited to 'target/linux/brcm-2.4/files/arch/mips/bcm947xx/bcmutils.c')
| -rw-r--r-- | target/linux/brcm-2.4/files/arch/mips/bcm947xx/bcmutils.c | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/target/linux/brcm-2.4/files/arch/mips/bcm947xx/bcmutils.c b/target/linux/brcm-2.4/files/arch/mips/bcm947xx/bcmutils.c new file mode 100644 index 000000000..c7b0b3d3c --- /dev/null +++ b/target/linux/brcm-2.4/files/arch/mips/bcm947xx/bcmutils.c @@ -0,0 +1,247 @@ +/* + * Misc useful OS-independent routines. + * + * Copyright 2006, 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: bcmutils.c,v 1.1.1.12 2006/02/27 03:43:16 honor Exp $ + */ + +#include <typedefs.h> +#include <bcmdefs.h> +#include <stdarg.h> +#include <bcmutils.h> +#include <osl.h> +#include <sbutils.h> +#include <bcmnvram.h> +#include <bcmendian.h> +#include <bcmdevs.h> + +unsigned char bcm_ctype[] = { + _BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C, /* 0-7 */ + _BCM_C, _BCM_C|_BCM_S, _BCM_C|_BCM_S, _BCM_C|_BCM_S, _BCM_C|_BCM_S, _BCM_C|_BCM_S, _BCM_C, + _BCM_C, /* 8-15 */ + _BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C, /* 16-23 */ + _BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C, /* 24-31 */ + _BCM_S|_BCM_SP,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 32-39 */ + _BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 40-47 */ + _BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D, /* 48-55 */ + _BCM_D,_BCM_D,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 56-63 */ + _BCM_P, _BCM_U|_BCM_X, _BCM_U|_BCM_X, _BCM_U|_BCM_X, _BCM_U|_BCM_X, _BCM_U|_BCM_X, + _BCM_U|_BCM_X, _BCM_U, /* 64-71 */ + _BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U, /* 72-79 */ + _BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U, /* 80-87 */ + _BCM_U,_BCM_U,_BCM_U,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 88-95 */ + _BCM_P, _BCM_L|_BCM_X, _BCM_L|_BCM_X, _BCM_L|_BCM_X, _BCM_L|_BCM_X, _BCM_L|_BCM_X, + _BCM_L|_BCM_X, _BCM_L, /* 96-103 */ + _BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L, /* 104-111 */ + _BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L, /* 112-119 */ + _BCM_L,_BCM_L,_BCM_L,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_C, /* 120-127 */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 128-143 */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 144-159 */ + _BCM_S|_BCM_SP, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, + _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, /* 160-175 */ + _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, + _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, /* 176-191 */ + _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, + _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, /* 192-207 */ + _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_P, _BCM_U, _BCM_U, _BCM_U, + _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_L, /* 208-223 */ + _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, + _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, /* 224-239 */ + _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_P, _BCM_L, _BCM_L, _BCM_L, + _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L /* 240-255 */ +}; + + +ulong +bcm_strtoul(char *cp, char **endp, uint base) +{ + ulong result, value; + bool minus; + + minus = FALSE; + + while (bcm_isspace(*cp)) + cp++; + + if (cp[0] == '+') + cp++; + else if (cp[0] == '-') { + minus = TRUE; + cp++; + } + + if (base == 0) { + if (cp[0] == '0') { + if ((cp[1] == 'x') || (cp[1] == 'X')) { + base = 16; + cp = &cp[2]; + } else { + base = 8; + cp = &cp[1]; + } + } else + base = 10; + } else if (base == 16 && (cp[0] == '0') && ((cp[1] == 'x') || (cp[1] == 'X'))) { + cp = &cp[2]; + } + + result = 0; + + while (bcm_isxdigit(*cp) && + (value = bcm_isdigit(*cp) ? *cp-'0' : bcm_toupper(*cp)-'A'+10) < base) { + result = result*base + value; + cp++; + } + + if (minus) + result = (ulong)(result * -1); + + if (endp) + *endp = (char *)cp; + + return (result); +} + +uchar +bcm_toupper(uchar c) +{ + if (bcm_islower(c)) + c -= 'a'-'A'; + return (c); +} + +char* +bcm_ether_ntoa(struct ether_addr *ea, char *buf) +{ + sprintf(buf, "%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); +} + + +/* + * Search the name=value vars for a specific one and return its value. + * Returns NULL if not found. + */ +char* +getvar(char *vars, char *name) +{ + char *s; + int len; + + len = strlen(name); + + /* first look in vars[] */ + for (s = vars; s && *s;) { + /* CSTYLED */ + if ((memcmp(s, name, len) == 0) && (s[len] == '=')) + return (&s[len+1]); + + while (*s++) + ; + } + + /* then query nvram */ + return (nvram_get(name)); +} + +/* + * Search the vars for a specific one and return its value as + * an integer. Returns 0 if not found. + */ +int +getintvar(char *vars, char *name) +{ + char *val; + + if ((val = getvar(vars, name)) == NULL) + return (0); + + return (bcm_strtoul(val, NULL, 0)); +} + + +/******************************************************************************* + * 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 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; +} + + |