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git://projects.qi-hardware.com/openwrt-xburst.git
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804 lines
22 KiB
C
804 lines
22 KiB
C
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/*
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* Misc useful OS-independent routines.
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*
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* Copyright 2004, Broadcom Corporation
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* All Rights Reserved.
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*
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* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
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* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
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* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
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* $Id$
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*/
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#include <typedefs.h>
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#include <osl.h>
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#include <bcmutils.h>
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#include <bcmendian.h>
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#include <bcmnvram.h>
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unsigned char bcm_ctype[] = {
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_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C, /* 0-7 */
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_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 */
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_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C, /* 16-23 */
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_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C, /* 24-31 */
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_BCM_S|_BCM_SP,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 32-39 */
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_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 40-47 */
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_BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D, /* 48-55 */
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_BCM_D,_BCM_D,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 56-63 */
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_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 */
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_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U, /* 72-79 */
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_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U, /* 80-87 */
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_BCM_U,_BCM_U,_BCM_U,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 88-95 */
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_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 */
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_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L, /* 104-111 */
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_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L, /* 112-119 */
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_BCM_L,_BCM_L,_BCM_L,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_C, /* 120-127 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 128-143 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 144-159 */
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_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 */
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_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 */
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_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 */
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_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 */
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_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 */
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_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 */
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};
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uchar
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bcm_toupper(uchar c)
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{
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if (bcm_islower(c))
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c -= 'a'-'A';
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return (c);
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}
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ulong
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bcm_strtoul(char *cp, char **endp, uint base)
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{
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ulong result, value;
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bool minus;
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minus = FALSE;
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while (bcm_isspace(*cp))
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cp++;
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if (cp[0] == '+')
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cp++;
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else if (cp[0] == '-') {
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minus = TRUE;
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cp++;
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}
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if (base == 0) {
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if (cp[0] == '0') {
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if ((cp[1] == 'x') || (cp[1] == 'X')) {
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base = 16;
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cp = &cp[2];
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} else {
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base = 8;
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cp = &cp[1];
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}
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} else
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base = 10;
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} else if (base == 16 && (cp[0] == '0') && ((cp[1] == 'x') || (cp[1] == 'X'))) {
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cp = &cp[2];
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}
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result = 0;
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while (bcm_isxdigit(*cp) &&
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(value = bcm_isdigit(*cp) ? *cp-'0' : bcm_toupper(*cp)-'A'+10) < base) {
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result = result*base + value;
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cp++;
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}
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if (minus)
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result = (ulong)(result * -1);
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if (endp)
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*endp = (char *)cp;
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return (result);
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}
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uint
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bcm_atoi(char *s)
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{
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uint n;
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n = 0;
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while (bcm_isdigit(*s))
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n = (n * 10) + *s++ - '0';
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return (n);
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}
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void
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deadbeef(char *p, uint len)
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{
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static uchar meat[] = { 0xde, 0xad, 0xbe, 0xef };
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while (len-- > 0) {
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*p = meat[((uint)p) & 3];
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p++;
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}
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}
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/* pretty hex print a contiguous buffer */
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void
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prhex(char *msg, uchar *buf, uint nbytes)
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{
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char line[256];
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char* p;
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uint i;
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if (msg && (msg[0] != '\0'))
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printf("%s: ", msg);
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p = line;
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for (i = 0; i < nbytes; i++) {
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if (i % 16 == 0) {
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p += sprintf(p, "%04d: ", i); /* line prefix */
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}
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p += sprintf(p, "%02x ", buf[i]);
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if (i % 16 == 15) {
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printf("%s\n", line); /* flush line */
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p = line;
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}
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}
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/* flush last partial line */
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if (p != line)
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printf("%s\n", line);
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}
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/* pretty hex print a pkt buffer chain */
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void
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prpkt(char *msg, void *drv, void *p0)
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{
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void *p;
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if (msg && (msg[0] != '\0'))
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printf("%s: ", msg);
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for (p = p0; p; p = PKTNEXT(drv, p))
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prhex(NULL, PKTDATA(drv, p), PKTLEN(drv, p));
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}
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/* copy a pkt buffer chain into a buffer */
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uint
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pktcopy(void *drv, void *p, uint offset, int len, uchar *buf)
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{
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uint n, ret = 0;
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if (len < 0)
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len = 4096; /* "infinite" */
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/* skip 'offset' bytes */
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for (; p && offset; p = PKTNEXT(drv, p)) {
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if (offset < (uint)PKTLEN(drv, p))
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break;
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offset -= PKTLEN(drv, p);
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}
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if (!p)
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return 0;
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/* copy the data */
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for (; p && len; p = PKTNEXT(drv, p)) {
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n = MIN((uint)PKTLEN(drv, p) - offset, (uint)len);
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bcopy(PKTDATA(drv, p) + offset, buf, n);
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buf += n;
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len -= n;
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ret += n;
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offset = 0;
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}
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return ret;
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}
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/* return total length of buffer chain */
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uint
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pkttotlen(void *drv, void *p)
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{
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uint total;
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total = 0;
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for (; p; p = PKTNEXT(drv, p))
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total += PKTLEN(drv, p);
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return (total);
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}
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uchar*
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bcm_ether_ntoa(char *ea, char *buf)
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{
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sprintf(buf,"%02x:%02x:%02x:%02x:%02x:%02x",
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(uchar)ea[0]&0xff, (uchar)ea[1]&0xff, (uchar)ea[2]&0xff,
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(uchar)ea[3]&0xff, (uchar)ea[4]&0xff, (uchar)ea[5]&0xff);
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return (buf);
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}
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/* parse a xx:xx:xx:xx:xx:xx format ethernet address */
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int
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bcm_ether_atoe(char *p, char *ea)
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{
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int i = 0;
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for (;;) {
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ea[i++] = (char) bcm_strtoul(p, &p, 16);
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if (!*p++ || i == 6)
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break;
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}
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return (i == 6);
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}
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/*
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* Advance from the current 1-byte tag/1-byte length/variable-length value
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* triple, to the next, returning a pointer to the next.
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*/
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bcm_tlv_t *
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bcm_next_tlv(bcm_tlv_t *elt, int *buflen)
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{
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int len;
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/* validate current elt */
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if (*buflen < 2) {
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return NULL;
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}
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len = elt->len;
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/* validate remaining buflen */
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if (*buflen >= (2 + len + 2)) {
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elt = (bcm_tlv_t*)(elt->data + len);
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*buflen -= (2 + len);
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} else {
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elt = NULL;
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}
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return elt;
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}
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/*
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* Traverse a string of 1-byte tag/1-byte length/variable-length value
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* triples, returning a pointer to the substring whose first element
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* matches tag. Stop parsing when we see an element whose ID is greater
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* than the target key.
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*/
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bcm_tlv_t *
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bcm_parse_ordered_tlvs(void *buf, int buflen, uint key)
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{
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bcm_tlv_t *elt;
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int totlen;
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elt = (bcm_tlv_t*)buf;
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totlen = buflen;
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/* find tagged parameter */
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while (totlen >= 2) {
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uint id = elt->id;
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int len = elt->len;
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/* Punt if we start seeing IDs > than target key */
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if (id > key)
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return(NULL);
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/* validate remaining totlen */
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if ((id == key) && (totlen >= (len + 2)))
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return (elt);
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elt = (bcm_tlv_t*)((uint8*)elt + (len + 2));
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totlen -= (len + 2);
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}
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return NULL;
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}
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/*
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* Traverse a string of 1-byte tag/1-byte length/variable-length value
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* triples, returning a pointer to the substring whose first element
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* matches tag
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*/
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bcm_tlv_t *
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bcm_parse_tlvs(void *buf, int buflen, uint key)
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{
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bcm_tlv_t *elt;
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int totlen;
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elt = (bcm_tlv_t*)buf;
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totlen = buflen;
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/* find tagged parameter */
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while (totlen >= 2) {
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int len = elt->len;
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/* validate remaining totlen */
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if ((elt->id == key) && (totlen >= (len + 2)))
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return (elt);
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elt = (bcm_tlv_t*)((uint8*)elt + (len + 2));
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totlen -= (len + 2);
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}
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return NULL;
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}
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void
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pktq_init(struct pktq *q, uint maxlen, bool priority)
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{
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q->head = q->tail = NULL;
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q->priority = priority;
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q->maxlen = maxlen;
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q->len = 0;
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}
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bool
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pktenq(struct pktq *q, void *p, bool lifo)
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{
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void *next, *prev;
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/* Queue is full */
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if (q->len >= q->maxlen)
|
||
|
|
return FALSE;
|
||
|
|
|
||
|
|
/* Queueing chains not allowed */
|
||
|
|
ASSERT(PKTLINK(p) == NULL);
|
||
|
|
|
||
|
|
/* Queue is empty */
|
||
|
|
if (q->tail == NULL) {
|
||
|
|
ASSERT(q->head == NULL);
|
||
|
|
q->head = q->tail = p;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Insert at head or tail */
|
||
|
|
else if (q->priority == FALSE) {
|
||
|
|
/* Insert at head (LIFO) */
|
||
|
|
if (lifo) {
|
||
|
|
PKTSETLINK(p, q->head);
|
||
|
|
q->head = p;
|
||
|
|
}
|
||
|
|
/* Insert at tail (FIFO) */
|
||
|
|
else {
|
||
|
|
ASSERT(PKTLINK(q->tail) == NULL);
|
||
|
|
PKTSETLINK(q->tail, p);
|
||
|
|
PKTSETLINK(p, NULL);
|
||
|
|
q->tail = p;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Insert by priority */
|
||
|
|
else {
|
||
|
|
ASSERT(q->head);
|
||
|
|
ASSERT(q->tail);
|
||
|
|
/* Shortcut to insertion at tail */
|
||
|
|
if (PKTPRIO(p) < PKTPRIO(q->tail) ||
|
||
|
|
(!lifo && PKTPRIO(p) <= PKTPRIO(q->tail))) {
|
||
|
|
prev = q->tail;
|
||
|
|
next = NULL;
|
||
|
|
}
|
||
|
|
/* Insert at head or in the middle */
|
||
|
|
else {
|
||
|
|
prev = NULL;
|
||
|
|
next = q->head;
|
||
|
|
}
|
||
|
|
/* Walk the queue */
|
||
|
|
for (; next; prev = next, next = PKTLINK(next)) {
|
||
|
|
/* Priority queue invariant */
|
||
|
|
ASSERT(!prev || PKTPRIO(prev) >= PKTPRIO(next));
|
||
|
|
/* Insert at head of string of packets of same priority (LIFO) */
|
||
|
|
if (lifo) {
|
||
|
|
if (PKTPRIO(p) >= PKTPRIO(next))
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
/* Insert at tail of string of packets of same priority (FIFO) */
|
||
|
|
else {
|
||
|
|
if (PKTPRIO(p) > PKTPRIO(next))
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/* Insert at tail */
|
||
|
|
if (next == NULL) {
|
||
|
|
ASSERT(PKTLINK(q->tail) == NULL);
|
||
|
|
PKTSETLINK(q->tail, p);
|
||
|
|
PKTSETLINK(p, NULL);
|
||
|
|
q->tail = p;
|
||
|
|
}
|
||
|
|
/* Insert in the middle */
|
||
|
|
else if (prev) {
|
||
|
|
PKTSETLINK(prev, p);
|
||
|
|
PKTSETLINK(p, next);
|
||
|
|
}
|
||
|
|
/* Insert at head */
|
||
|
|
else {
|
||
|
|
PKTSETLINK(p, q->head);
|
||
|
|
q->head = p;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* List invariants after insertion */
|
||
|
|
ASSERT(q->head);
|
||
|
|
ASSERT(PKTLINK(q->tail) == NULL);
|
||
|
|
|
||
|
|
q->len++;
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
void*
|
||
|
|
pktdeq(struct pktq *q)
|
||
|
|
{
|
||
|
|
void *p;
|
||
|
|
|
||
|
|
if ((p = q->head)) {
|
||
|
|
ASSERT(q->tail);
|
||
|
|
q->head = PKTLINK(p);
|
||
|
|
PKTSETLINK(p, NULL);
|
||
|
|
q->len--;
|
||
|
|
if (q->head == NULL)
|
||
|
|
q->tail = NULL;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
ASSERT(q->tail == NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
return (p);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
* 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
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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; ) {
|
||
|
|
if ((bcmp(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));
|
||
|
|
}
|
||
|
|
|
||
|
|
/* return pointer to location of substring 'needle' in 'haystack' */
|
||
|
|
char*
|
||
|
|
bcmstrstr(char *haystack, char *needle)
|
||
|
|
{
|
||
|
|
int len, nlen;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
if ((haystack == NULL) || (needle == NULL))
|
||
|
|
return (haystack);
|
||
|
|
|
||
|
|
nlen = strlen(needle);
|
||
|
|
len = strlen(haystack) - nlen + 1;
|
||
|
|
|
||
|
|
for (i = 0; i < len; i++)
|
||
|
|
if (bcmp(needle, &haystack[i], nlen) == 0)
|
||
|
|
return (&haystack[i]);
|
||
|
|
return (NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
bcm_mdelay(uint ms)
|
||
|
|
{
|
||
|
|
uint i;
|
||
|
|
|
||
|
|
for (i = 0; i < ms; i++) {
|
||
|
|
OSL_DELAY(1000);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#define CRC_INNER_LOOP(n, c, x) \
|
||
|
|
(c) = ((c) >> 8) ^ crc##n##_table[((c) ^ (x)) & 0xff]
|
||
|
|
|
||
|
|
uint8
|
||
|
|
crc8(
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
* crc16
|
||
|
|
*
|
||
|
|
* Computes a crc16 over the input data using the polynomial:
|
||
|
|
*
|
||
|
|
* x^16 + x^12 +x^5 + 1
|
||
|
|
*
|
||
|
|
* The caller provides the initial value (either CRC16_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 CRC16_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 uint16 crc16_table[256] = {
|
||
|
|
0x0000, 0x1189, 0x2312, 0x329B, 0x4624, 0x57AD, 0x6536, 0x74BF,
|
||
|
|
0x8C48, 0x9DC1, 0xAF5A, 0xBED3, 0xCA6C, 0xDBE5, 0xE97E, 0xF8F7,
|
||
|
|
0x1081, 0x0108, 0x3393, 0x221A, 0x56A5, 0x472C, 0x75B7, 0x643E,
|
||
|
|
0x9CC9, 0x8D40, 0xBFDB, 0xAE52, 0xDAED, 0xCB64, 0xF9FF, 0xE876,
|
||
|
|
0x2102, 0x308B, 0x0210, 0x1399, 0x6726, 0x76AF, 0x4434, 0x55BD,
|
||
|
|
0xAD4A, 0xBCC3, 0x8E58, 0x9FD1, 0xEB6E, 0xFAE7, 0xC87C, 0xD9F5,
|
||
|
|
0x3183, 0x200A, 0x1291, 0x0318, 0x77A7, 0x662E, 0x54B5, 0x453C,
|
||
|
|
0xBDCB, 0xAC42, 0x9ED9, 0x8F50, 0xFBEF, 0xEA66, 0xD8FD, 0xC974,
|
||
|
|
0x4204, 0x538D, 0x6116, 0x709F, 0x0420, 0x15A9, 0x2732, 0x36BB,
|
||
|
|
0xCE4C, 0xDFC5, 0xED5E, 0xFCD7, 0x8868, 0x99E1, 0xAB7A, 0xBAF3,
|
||
|
|
0x5285, 0x430C, 0x7197, 0x601E, 0x14A1, 0x0528, 0x37B3, 0x263A,
|
||
|
|
0xDECD, 0xCF44, 0xFDDF, 0xEC56, 0x98E9, 0x8960, 0xBBFB, 0xAA72,
|
||
|
|
0x6306, 0x728F, 0x4014, 0x519D, 0x2522, 0x34AB, 0x0630, 0x17B9,
|
||
|
|
0xEF4E, 0xFEC7, 0xCC5C, 0xDDD5, 0xA96A, 0xB8E3, 0x8A78, 0x9BF1,
|
||
|
|
0x7387, 0x620E, 0x5095, 0x411C, 0x35A3, 0x242A, 0x16B1, 0x0738,
|
||
|
|
0xFFCF, 0xEE46, 0xDCDD, 0xCD54, 0xB9EB, 0xA862, 0x9AF9, 0x8B70,
|
||
|
|
0x8408, 0x9581, 0xA71A, 0xB693, 0xC22C, 0xD3A5, 0xE13E, 0xF0B7,
|
||
|
|
0x0840, 0x19C9, 0x2B52, 0x3ADB, 0x4E64, 0x5FED, 0x6D76, 0x7CFF,
|
||
|
|
0x9489, 0x8500, 0xB79B, 0xA612, 0xD2AD, 0xC324, 0xF1BF, 0xE036,
|
||
|
|
0x18C1, 0x0948, 0x3BD3, 0x2A5A, 0x5EE5, 0x4F6C, 0x7DF7, 0x6C7E,
|
||
|
|
0xA50A, 0xB483, 0x8618, 0x9791, 0xE32E, 0xF2A7, 0xC03C, 0xD1B5,
|
||
|
|
0x2942, 0x38CB, 0x0A50, 0x1BD9, 0x6F66, 0x7EEF, 0x4C74, 0x5DFD,
|
||
|
|
0xB58B, 0xA402, 0x9699, 0x8710, 0xF3AF, 0xE226, 0xD0BD, 0xC134,
|
||
|
|
0x39C3, 0x284A, 0x1AD1, 0x0B58, 0x7FE7, 0x6E6E, 0x5CF5, 0x4D7C,
|
||
|
|
0xC60C, 0xD785, 0xE51E, 0xF497, 0x8028, 0x91A1, 0xA33A, 0xB2B3,
|
||
|
|
0x4A44, 0x5BCD, 0x6956, 0x78DF, 0x0C60, 0x1DE9, 0x2F72, 0x3EFB,
|
||
|
|
0xD68D, 0xC704, 0xF59F, 0xE416, 0x90A9, 0x8120, 0xB3BB, 0xA232,
|
||
|
|
0x5AC5, 0x4B4C, 0x79D7, 0x685E, 0x1CE1, 0x0D68, 0x3FF3, 0x2E7A,
|
||
|
|
0xE70E, 0xF687, 0xC41C, 0xD595, 0xA12A, 0xB0A3, 0x8238, 0x93B1,
|
||
|
|
0x6B46, 0x7ACF, 0x4854, 0x59DD, 0x2D62, 0x3CEB, 0x0E70, 0x1FF9,
|
||
|
|
0xF78F, 0xE606, 0xD49D, 0xC514, 0xB1AB, 0xA022, 0x92B9, 0x8330,
|
||
|
|
0x7BC7, 0x6A4E, 0x58D5, 0x495C, 0x3DE3, 0x2C6A, 0x1EF1, 0x0F78
|
||
|
|
};
|
||
|
|
|
||
|
|
uint16
|
||
|
|
crc16(
|
||
|
|
uint8 *pdata, /* pointer to array of data to process */
|
||
|
|
uint nbytes, /* number of input data bytes to process */
|
||
|
|
uint16 crc /* either CRC16_INIT_VALUE or previous return value */
|
||
|
|
)
|
||
|
|
{
|
||
|
|
while (nbytes-- > 0)
|
||
|
|
CRC_INNER_LOOP(16, crc, *pdata++);
|
||
|
|
return crc;
|
||
|
|
}
|
||
|
|
|
||
|
|
static uint32 crc32_table[256] = {
|
||
|
|
0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,
|
||
|
|
0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
|
||
|
|
0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
|
||
|
|
0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
|
||
|
|
0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
|
||
|
|
0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
|
||
|
|
0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
|
||
|
|
0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
|
||
|
|
0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
|
||
|
|
0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
|
||
|
|
0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
|
||
|
|
0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
|
||
|
|
0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
|
||
|
|
0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
|
||
|
|
0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
|
||
|
|
0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
|
||
|
|
0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
|
||
|
|
0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
|
||
|
|
0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
|
||
|
|
0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
|
||
|
|
0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
|
||
|
|
0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
|
||
|
|
0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
|
||
|
|
0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
|
||
|
|
0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
|
||
|
|
0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
|
||
|
|
0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
|
||
|
|
0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
|
||
|
|
0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
|
||
|
|
0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
|
||
|
|
0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
|
||
|
|
0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
|
||
|
|
0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
|
||
|
|
0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
|
||
|
|
0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
|
||
|
|
0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
|
||
|
|
0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
|
||
|
|
0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
|
||
|
|
0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
|
||
|
|
0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
|
||
|
|
0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
|
||
|
|
0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
|
||
|
|
0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
|
||
|
|
0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
|
||
|
|
0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
|
||
|
|
0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
|
||
|
|
0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
|
||
|
|
0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
|
||
|
|
0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
|
||
|
|
0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
|
||
|
|
0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
|
||
|
|
0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
|
||
|
|
0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
|
||
|
|
0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
|
||
|
|
0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
|
||
|
|
0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
|
||
|
|
0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
|
||
|
|
0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
|
||
|
|
0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
|
||
|
|
0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
|
||
|
|
0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
|
||
|
|
0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
|
||
|
|
0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
|
||
|
|
0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
|
||
|
|
};
|
||
|
|
|
||
|
|
uint32
|
||
|
|
crc32(
|
||
|
|
uint8 *pdata, /* pointer to array of data to process */
|
||
|
|
uint nbytes, /* number of input data bytes to process */
|
||
|
|
uint32 crc /* either CRC32_INIT_VALUE or previous return value */
|
||
|
|
)
|
||
|
|
{
|
||
|
|
uint8 *pend;
|
||
|
|
#ifdef __mips__
|
||
|
|
uint8 tmp[4];
|
||
|
|
ulong *tptr = (ulong *)tmp;
|
||
|
|
|
||
|
|
/* in case the beginning of the buffer isn't aligned */
|
||
|
|
pend = (uint8 *)((uint)(pdata + 3) & 0xfffffffc);
|
||
|
|
nbytes -= (pend - pdata);
|
||
|
|
while (pdata < pend)
|
||
|
|
CRC_INNER_LOOP(32, crc, *pdata++);
|
||
|
|
|
||
|
|
/* handle bulk of data as 32-bit words */
|
||
|
|
pend = pdata + (nbytes & 0xfffffffc);
|
||
|
|
while (pdata < pend) {
|
||
|
|
*tptr = *((ulong *)pdata)++;
|
||
|
|
CRC_INNER_LOOP(32, crc, tmp[0]);
|
||
|
|
CRC_INNER_LOOP(32, crc, tmp[1]);
|
||
|
|
CRC_INNER_LOOP(32, crc, tmp[2]);
|
||
|
|
CRC_INNER_LOOP(32, crc, tmp[3]);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 1-3 bytes at end of buffer */
|
||
|
|
pend = pdata + (nbytes & 0x03);
|
||
|
|
while (pdata < pend)
|
||
|
|
CRC_INNER_LOOP(32, crc, *pdata++);
|
||
|
|
#else
|
||
|
|
pend = pdata + nbytes;
|
||
|
|
while (pdata < pend)
|
||
|
|
CRC_INNER_LOOP(32, crc, *pdata++);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
return crc;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef notdef
|
||
|
|
#define CLEN 1499
|
||
|
|
#define CBUFSIZ (CLEN+4)
|
||
|
|
#define CNBUFS 5
|
||
|
|
|
||
|
|
void testcrc32(void)
|
||
|
|
{
|
||
|
|
uint j,k,l;
|
||
|
|
uint8 *buf;
|
||
|
|
uint len[CNBUFS];
|
||
|
|
uint32 crcr;
|
||
|
|
uint32 crc32tv[CNBUFS] =
|
||
|
|
{0xd2cb1faa, 0xd385c8fa, 0xf5b4f3f3, 0x55789e20, 0x00343110};
|
||
|
|
|
||
|
|
ASSERT((buf = MALLOC(CBUFSIZ*CNBUFS)) != NULL);
|
||
|
|
|
||
|
|
/* step through all possible alignments */
|
||
|
|
for (l=0;l<=4;l++) {
|
||
|
|
for (j=0; j<CNBUFS; j++) {
|
||
|
|
len[j] = CLEN;
|
||
|
|
for (k=0; k<len[j]; k++)
|
||
|
|
*(buf + j*CBUFSIZ + (k+l)) = (j+k) & 0xff;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (j=0; j<CNBUFS; j++) {
|
||
|
|
crcr = crc32(buf + j*CBUFSIZ + l, len[j], CRC32_INIT_VALUE);
|
||
|
|
ASSERT(crcr == crc32tv[j]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
MFREE(buf, CBUFSIZ*CNBUFS);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|