Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2010 Broadcom Corporation |
| 3 | * |
| 4 | * Permission to use, copy, modify, and/or distribute this software for any |
| 5 | * purpose with or without fee is hereby granted, provided that the above |
| 6 | * copyright notice and this permission notice appear in all copies. |
| 7 | * |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 11 | * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| 13 | * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 14 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 15 | */ |
| 16 | |
| 17 | #include <typedefs.h> |
| 18 | #include <bcmdefs.h> |
| 19 | #include <stdarg.h> |
| 20 | #include <osl.h> |
Andy Shevchenko | 48c51a8 | 2010-09-15 12:47:18 +0300 | [diff] [blame] | 21 | #include <linux/ctype.h> |
| 22 | #include <linux/kernel.h> |
Brett Rudley | 3327989 | 2010-10-01 18:03:27 -0700 | [diff] [blame] | 23 | #include <linux/string.h> |
| 24 | #include <linuxver.h> |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 25 | #include <bcmutils.h> |
| 26 | #include <siutils.h> |
| 27 | #include <bcmnvram.h> |
| 28 | #include <bcmendian.h> |
| 29 | #include <bcmdevs.h> |
| 30 | #include <proto/ethernet.h> |
| 31 | #include <proto/802.1d.h> |
| 32 | #include <proto/802.11.h> |
| 33 | |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 34 | |
| 35 | /* return total length of buffer chain */ |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 36 | uint BCMFASTPATH pkttotlen(osl_t *osh, void *p) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 37 | { |
| 38 | uint total; |
| 39 | |
| 40 | total = 0; |
| 41 | for (; p; p = PKTNEXT(p)) |
| 42 | total += PKTLEN(p); |
Jason Cooper | 90ea229 | 2010-09-14 09:45:32 -0400 | [diff] [blame] | 43 | return total; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 44 | } |
| 45 | |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 46 | /* |
| 47 | * osl multiple-precedence packet queue |
| 48 | * hi_prec is always >= the number of the highest non-empty precedence |
| 49 | */ |
| 50 | void *BCMFASTPATH pktq_penq(struct pktq *pq, int prec, void *p) |
| 51 | { |
| 52 | struct pktq_prec *q; |
| 53 | |
| 54 | ASSERT(prec >= 0 && prec < pq->num_prec); |
| 55 | ASSERT(PKTLINK(p) == NULL); /* queueing chains not allowed */ |
| 56 | |
| 57 | ASSERT(!pktq_full(pq)); |
| 58 | ASSERT(!pktq_pfull(pq, prec)); |
| 59 | |
| 60 | q = &pq->q[prec]; |
| 61 | |
| 62 | if (q->head) |
| 63 | PKTSETLINK(q->tail, p); |
| 64 | else |
| 65 | q->head = p; |
| 66 | |
| 67 | q->tail = p; |
| 68 | q->len++; |
| 69 | |
| 70 | pq->len++; |
| 71 | |
| 72 | if (pq->hi_prec < prec) |
Greg Kroah-Hartman | 36ef9a1 | 2010-10-05 10:02:49 -0700 | [diff] [blame] | 73 | pq->hi_prec = (u8) prec; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 74 | |
| 75 | return p; |
| 76 | } |
| 77 | |
| 78 | void *BCMFASTPATH pktq_penq_head(struct pktq *pq, int prec, void *p) |
| 79 | { |
| 80 | struct pktq_prec *q; |
| 81 | |
| 82 | ASSERT(prec >= 0 && prec < pq->num_prec); |
| 83 | ASSERT(PKTLINK(p) == NULL); /* queueing chains not allowed */ |
| 84 | |
| 85 | ASSERT(!pktq_full(pq)); |
| 86 | ASSERT(!pktq_pfull(pq, prec)); |
| 87 | |
| 88 | q = &pq->q[prec]; |
| 89 | |
| 90 | if (q->head == NULL) |
| 91 | q->tail = p; |
| 92 | |
| 93 | PKTSETLINK(p, q->head); |
| 94 | q->head = p; |
| 95 | q->len++; |
| 96 | |
| 97 | pq->len++; |
| 98 | |
| 99 | if (pq->hi_prec < prec) |
Greg Kroah-Hartman | 36ef9a1 | 2010-10-05 10:02:49 -0700 | [diff] [blame] | 100 | pq->hi_prec = (u8) prec; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 101 | |
| 102 | return p; |
| 103 | } |
| 104 | |
| 105 | void *BCMFASTPATH pktq_pdeq(struct pktq *pq, int prec) |
| 106 | { |
| 107 | struct pktq_prec *q; |
| 108 | void *p; |
| 109 | |
| 110 | ASSERT(prec >= 0 && prec < pq->num_prec); |
| 111 | |
| 112 | q = &pq->q[prec]; |
| 113 | |
Jason Cooper | ca8c1e5 | 2010-09-14 09:45:33 -0400 | [diff] [blame] | 114 | p = q->head; |
| 115 | if (p == NULL) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 116 | return NULL; |
| 117 | |
Jason Cooper | ca8c1e5 | 2010-09-14 09:45:33 -0400 | [diff] [blame] | 118 | q->head = PKTLINK(p); |
| 119 | if (q->head == NULL) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 120 | q->tail = NULL; |
| 121 | |
| 122 | q->len--; |
| 123 | |
| 124 | pq->len--; |
| 125 | |
| 126 | PKTSETLINK(p, NULL); |
| 127 | |
| 128 | return p; |
| 129 | } |
| 130 | |
| 131 | void *BCMFASTPATH pktq_pdeq_tail(struct pktq *pq, int prec) |
| 132 | { |
| 133 | struct pktq_prec *q; |
| 134 | void *p, *prev; |
| 135 | |
| 136 | ASSERT(prec >= 0 && prec < pq->num_prec); |
| 137 | |
| 138 | q = &pq->q[prec]; |
| 139 | |
Jason Cooper | ca8c1e5 | 2010-09-14 09:45:33 -0400 | [diff] [blame] | 140 | p = q->head; |
| 141 | if (p == NULL) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 142 | return NULL; |
| 143 | |
| 144 | for (prev = NULL; p != q->tail; p = PKTLINK(p)) |
| 145 | prev = p; |
| 146 | |
| 147 | if (prev) |
| 148 | PKTSETLINK(prev, NULL); |
| 149 | else |
| 150 | q->head = NULL; |
| 151 | |
| 152 | q->tail = prev; |
| 153 | q->len--; |
| 154 | |
| 155 | pq->len--; |
| 156 | |
| 157 | return p; |
| 158 | } |
| 159 | |
| 160 | void |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 161 | pktq_pflush(osl_t *osh, struct pktq *pq, int prec, bool dir, ifpkt_cb_t fn, |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 162 | int arg) |
| 163 | { |
| 164 | struct pktq_prec *q; |
| 165 | void *p, *prev = NULL; |
| 166 | |
| 167 | q = &pq->q[prec]; |
| 168 | p = q->head; |
| 169 | while (p) { |
| 170 | if (fn == NULL || (*fn) (p, arg)) { |
| 171 | bool head = (p == q->head); |
| 172 | if (head) |
| 173 | q->head = PKTLINK(p); |
| 174 | else |
| 175 | PKTSETLINK(prev, PKTLINK(p)); |
| 176 | PKTSETLINK(p, NULL); |
| 177 | PKTFREE(osh, p, dir); |
| 178 | q->len--; |
| 179 | pq->len--; |
| 180 | p = (head ? q->head : PKTLINK(prev)); |
| 181 | } else { |
| 182 | prev = p; |
| 183 | p = PKTLINK(p); |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | if (q->head == NULL) { |
| 188 | ASSERT(q->len == 0); |
| 189 | q->tail = NULL; |
| 190 | } |
| 191 | } |
| 192 | |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 193 | void pktq_init(struct pktq *pq, int num_prec, int max_len) |
| 194 | { |
| 195 | int prec; |
| 196 | |
| 197 | ASSERT(num_prec > 0 && num_prec <= PKTQ_MAX_PREC); |
| 198 | |
| 199 | /* pq is variable size; only zero out what's requested */ |
| 200 | bzero(pq, |
Greg Kroah-Hartman | ce0f1b8 | 2010-10-08 11:44:45 -0700 | [diff] [blame] | 201 | offsetof(struct pktq, q) + (sizeof(struct pktq_prec) * num_prec)); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 202 | |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 203 | pq->num_prec = (u16) num_prec; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 204 | |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 205 | pq->max = (u16) max_len; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 206 | |
| 207 | for (prec = 0; prec < num_prec; prec++) |
| 208 | pq->q[prec].max = pq->max; |
| 209 | } |
| 210 | |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 211 | void *pktq_peek_tail(struct pktq *pq, int *prec_out) |
| 212 | { |
| 213 | int prec; |
| 214 | |
| 215 | if (pq->len == 0) |
| 216 | return NULL; |
| 217 | |
| 218 | for (prec = 0; prec < pq->hi_prec; prec++) |
| 219 | if (pq->q[prec].head) |
| 220 | break; |
| 221 | |
| 222 | if (prec_out) |
| 223 | *prec_out = prec; |
| 224 | |
Jason Cooper | 90ea229 | 2010-09-14 09:45:32 -0400 | [diff] [blame] | 225 | return pq->q[prec].tail; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 226 | } |
| 227 | |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 228 | void pktq_flush(osl_t *osh, struct pktq *pq, bool dir, ifpkt_cb_t fn, int arg) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 229 | { |
| 230 | int prec; |
| 231 | for (prec = 0; prec < pq->num_prec; prec++) |
| 232 | pktq_pflush(osh, pq, prec, dir, fn, arg); |
| 233 | if (fn == NULL) |
| 234 | ASSERT(pq->len == 0); |
| 235 | } |
| 236 | |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 237 | /* Priority dequeue from a specific set of precedences */ |
| 238 | void *BCMFASTPATH pktq_mdeq(struct pktq *pq, uint prec_bmp, int *prec_out) |
| 239 | { |
| 240 | struct pktq_prec *q; |
| 241 | void *p; |
| 242 | int prec; |
| 243 | |
| 244 | if (pq->len == 0) |
| 245 | return NULL; |
| 246 | |
| 247 | while ((prec = pq->hi_prec) > 0 && pq->q[prec].head == NULL) |
| 248 | pq->hi_prec--; |
| 249 | |
| 250 | while ((prec_bmp & (1 << prec)) == 0 || pq->q[prec].head == NULL) |
| 251 | if (prec-- == 0) |
| 252 | return NULL; |
| 253 | |
| 254 | q = &pq->q[prec]; |
| 255 | |
Jason Cooper | ca8c1e5 | 2010-09-14 09:45:33 -0400 | [diff] [blame] | 256 | p = q->head; |
| 257 | if (p == NULL) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 258 | return NULL; |
| 259 | |
Jason Cooper | ca8c1e5 | 2010-09-14 09:45:33 -0400 | [diff] [blame] | 260 | q->head = PKTLINK(p); |
| 261 | if (q->head == NULL) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 262 | q->tail = NULL; |
| 263 | |
| 264 | q->len--; |
| 265 | |
| 266 | if (prec_out) |
| 267 | *prec_out = prec; |
| 268 | |
| 269 | pq->len--; |
| 270 | |
| 271 | PKTSETLINK(p, NULL); |
| 272 | |
| 273 | return p; |
| 274 | } |
| 275 | |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 276 | /* parse a xx:xx:xx:xx:xx:xx format ethernet address */ |
Jason Cooper | a2627bc | 2010-09-14 09:45:31 -0400 | [diff] [blame] | 277 | int BCMROMFN(bcm_ether_atoe) (char *p, struct ether_addr *ea) |
| 278 | { |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 279 | int i = 0; |
| 280 | |
| 281 | for (;;) { |
Andy Shevchenko | 48c51a8 | 2010-09-15 12:47:18 +0300 | [diff] [blame] | 282 | ea->octet[i++] = (char)simple_strtoul(p, &p, 16); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 283 | if (!*p++ || i == 6) |
| 284 | break; |
| 285 | } |
| 286 | |
Jason Cooper | 90ea229 | 2010-09-14 09:45:32 -0400 | [diff] [blame] | 287 | return i == 6; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 288 | } |
| 289 | |
| 290 | char *bcm_ether_ntoa(const struct ether_addr *ea, char *buf) |
| 291 | { |
Andy Shevchenko | 8dab24c | 2010-09-13 11:40:27 +0300 | [diff] [blame] | 292 | snprintf(buf, 18, "%pM", ea->octet); |
Jason Cooper | 90ea229 | 2010-09-14 09:45:32 -0400 | [diff] [blame] | 293 | return buf; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 294 | } |
| 295 | |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 296 | /* |
| 297 | * Search the name=value vars for a specific one and return its value. |
| 298 | * Returns NULL if not found. |
| 299 | */ |
| 300 | char *getvar(char *vars, const char *name) |
| 301 | { |
| 302 | char *s; |
| 303 | int len; |
| 304 | |
| 305 | if (!name) |
| 306 | return NULL; |
| 307 | |
| 308 | len = strlen(name); |
| 309 | if (len == 0) |
| 310 | return NULL; |
| 311 | |
| 312 | /* first look in vars[] */ |
| 313 | for (s = vars; s && *s;) { |
| 314 | if ((bcmp(s, name, len) == 0) && (s[len] == '=')) |
Jason Cooper | 90ea229 | 2010-09-14 09:45:32 -0400 | [diff] [blame] | 315 | return &s[len + 1]; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 316 | |
Jason Cooper | 6214582 | 2010-09-14 09:45:34 -0400 | [diff] [blame] | 317 | while (*s++) |
| 318 | ; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 319 | } |
| 320 | |
| 321 | /* then query nvram */ |
Jason Cooper | 90ea229 | 2010-09-14 09:45:32 -0400 | [diff] [blame] | 322 | return nvram_get(name); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 323 | } |
| 324 | |
| 325 | /* |
| 326 | * Search the vars for a specific one and return its value as |
| 327 | * an integer. Returns 0 if not found. |
| 328 | */ |
| 329 | int getintvar(char *vars, const char *name) |
| 330 | { |
| 331 | char *val; |
| 332 | |
Jason Cooper | ca8c1e5 | 2010-09-14 09:45:33 -0400 | [diff] [blame] | 333 | val = getvar(vars, name); |
| 334 | if (val == NULL) |
Jason Cooper | 90ea229 | 2010-09-14 09:45:32 -0400 | [diff] [blame] | 335 | return 0; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 336 | |
Andy Shevchenko | 48c51a8 | 2010-09-15 12:47:18 +0300 | [diff] [blame] | 337 | return simple_strtoul(val, NULL, 0); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 338 | } |
| 339 | |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 340 | #if defined(BCMDBG) |
| 341 | /* pretty hex print a pkt buffer chain */ |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 342 | void prpkt(const char *msg, osl_t *osh, void *p0) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 343 | { |
| 344 | void *p; |
| 345 | |
| 346 | if (msg && (msg[0] != '\0')) |
| 347 | printf("%s:\n", msg); |
| 348 | |
| 349 | for (p = p0; p; p = PKTNEXT(p)) |
| 350 | prhex(NULL, PKTDATA(p), PKTLEN(p)); |
| 351 | } |
| 352 | #endif /* defined(BCMDBG) */ |
| 353 | |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 354 | int bcm_iovar_lencheck(const bcm_iovar_t *vi, void *arg, int len, bool set) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 355 | { |
| 356 | int bcmerror = 0; |
| 357 | |
| 358 | /* length check on io buf */ |
| 359 | switch (vi->type) { |
| 360 | case IOVT_BOOL: |
| 361 | case IOVT_INT8: |
| 362 | case IOVT_INT16: |
| 363 | case IOVT_INT32: |
| 364 | case IOVT_UINT8: |
| 365 | case IOVT_UINT16: |
| 366 | case IOVT_UINT32: |
Greg Kroah-Hartman | 3e26416 | 2010-10-08 11:11:13 -0700 | [diff] [blame] | 367 | /* all integers are s32 sized args at the ioctl interface */ |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 368 | if (len < (int)sizeof(int)) { |
| 369 | bcmerror = BCME_BUFTOOSHORT; |
| 370 | } |
| 371 | break; |
| 372 | |
| 373 | case IOVT_BUFFER: |
| 374 | /* buffer must meet minimum length requirement */ |
| 375 | if (len < vi->minlen) { |
| 376 | bcmerror = BCME_BUFTOOSHORT; |
| 377 | } |
| 378 | break; |
| 379 | |
| 380 | case IOVT_VOID: |
| 381 | if (!set) { |
| 382 | /* Cannot return nil... */ |
| 383 | bcmerror = BCME_UNSUPPORTED; |
| 384 | } else if (len) { |
| 385 | /* Set is an action w/o parameters */ |
| 386 | bcmerror = BCME_BUFTOOLONG; |
| 387 | } |
| 388 | break; |
| 389 | |
| 390 | default: |
| 391 | /* unknown type for length check in iovar info */ |
| 392 | ASSERT(0); |
| 393 | bcmerror = BCME_UNSUPPORTED; |
| 394 | } |
| 395 | |
| 396 | return bcmerror; |
| 397 | } |
| 398 | |
| 399 | /******************************************************************************* |
| 400 | * crc8 |
| 401 | * |
| 402 | * Computes a crc8 over the input data using the polynomial: |
| 403 | * |
| 404 | * x^8 + x^7 +x^6 + x^4 + x^2 + 1 |
| 405 | * |
| 406 | * The caller provides the initial value (either CRC8_INIT_VALUE |
| 407 | * or the previous returned value) to allow for processing of |
| 408 | * discontiguous blocks of data. When generating the CRC the |
| 409 | * caller is responsible for complementing the final return value |
| 410 | * and inserting it into the byte stream. When checking, a final |
| 411 | * return value of CRC8_GOOD_VALUE indicates a valid CRC. |
| 412 | * |
| 413 | * Reference: Dallas Semiconductor Application Note 27 |
| 414 | * Williams, Ross N., "A Painless Guide to CRC Error Detection Algorithms", |
| 415 | * ver 3, Aug 1993, ross@guest.adelaide.edu.au, Rocksoft Pty Ltd., |
| 416 | * ftp://ftp.rocksoft.com/clients/rocksoft/papers/crc_v3.txt |
| 417 | * |
| 418 | * **************************************************************************** |
| 419 | */ |
| 420 | |
Greg Kroah-Hartman | 36ef9a1 | 2010-10-05 10:02:49 -0700 | [diff] [blame] | 421 | static const u8 crc8_table[256] = { |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 422 | 0x00, 0xF7, 0xB9, 0x4E, 0x25, 0xD2, 0x9C, 0x6B, |
| 423 | 0x4A, 0xBD, 0xF3, 0x04, 0x6F, 0x98, 0xD6, 0x21, |
| 424 | 0x94, 0x63, 0x2D, 0xDA, 0xB1, 0x46, 0x08, 0xFF, |
| 425 | 0xDE, 0x29, 0x67, 0x90, 0xFB, 0x0C, 0x42, 0xB5, |
| 426 | 0x7F, 0x88, 0xC6, 0x31, 0x5A, 0xAD, 0xE3, 0x14, |
| 427 | 0x35, 0xC2, 0x8C, 0x7B, 0x10, 0xE7, 0xA9, 0x5E, |
| 428 | 0xEB, 0x1C, 0x52, 0xA5, 0xCE, 0x39, 0x77, 0x80, |
| 429 | 0xA1, 0x56, 0x18, 0xEF, 0x84, 0x73, 0x3D, 0xCA, |
| 430 | 0xFE, 0x09, 0x47, 0xB0, 0xDB, 0x2C, 0x62, 0x95, |
| 431 | 0xB4, 0x43, 0x0D, 0xFA, 0x91, 0x66, 0x28, 0xDF, |
| 432 | 0x6A, 0x9D, 0xD3, 0x24, 0x4F, 0xB8, 0xF6, 0x01, |
| 433 | 0x20, 0xD7, 0x99, 0x6E, 0x05, 0xF2, 0xBC, 0x4B, |
| 434 | 0x81, 0x76, 0x38, 0xCF, 0xA4, 0x53, 0x1D, 0xEA, |
| 435 | 0xCB, 0x3C, 0x72, 0x85, 0xEE, 0x19, 0x57, 0xA0, |
| 436 | 0x15, 0xE2, 0xAC, 0x5B, 0x30, 0xC7, 0x89, 0x7E, |
| 437 | 0x5F, 0xA8, 0xE6, 0x11, 0x7A, 0x8D, 0xC3, 0x34, |
| 438 | 0xAB, 0x5C, 0x12, 0xE5, 0x8E, 0x79, 0x37, 0xC0, |
| 439 | 0xE1, 0x16, 0x58, 0xAF, 0xC4, 0x33, 0x7D, 0x8A, |
| 440 | 0x3F, 0xC8, 0x86, 0x71, 0x1A, 0xED, 0xA3, 0x54, |
| 441 | 0x75, 0x82, 0xCC, 0x3B, 0x50, 0xA7, 0xE9, 0x1E, |
| 442 | 0xD4, 0x23, 0x6D, 0x9A, 0xF1, 0x06, 0x48, 0xBF, |
| 443 | 0x9E, 0x69, 0x27, 0xD0, 0xBB, 0x4C, 0x02, 0xF5, |
| 444 | 0x40, 0xB7, 0xF9, 0x0E, 0x65, 0x92, 0xDC, 0x2B, |
| 445 | 0x0A, 0xFD, 0xB3, 0x44, 0x2F, 0xD8, 0x96, 0x61, |
| 446 | 0x55, 0xA2, 0xEC, 0x1B, 0x70, 0x87, 0xC9, 0x3E, |
| 447 | 0x1F, 0xE8, 0xA6, 0x51, 0x3A, 0xCD, 0x83, 0x74, |
| 448 | 0xC1, 0x36, 0x78, 0x8F, 0xE4, 0x13, 0x5D, 0xAA, |
| 449 | 0x8B, 0x7C, 0x32, 0xC5, 0xAE, 0x59, 0x17, 0xE0, |
| 450 | 0x2A, 0xDD, 0x93, 0x64, 0x0F, 0xF8, 0xB6, 0x41, |
| 451 | 0x60, 0x97, 0xD9, 0x2E, 0x45, 0xB2, 0xFC, 0x0B, |
| 452 | 0xBE, 0x49, 0x07, 0xF0, 0x9B, 0x6C, 0x22, 0xD5, |
| 453 | 0xF4, 0x03, 0x4D, 0xBA, 0xD1, 0x26, 0x68, 0x9F |
| 454 | }; |
| 455 | |
| 456 | #define CRC_INNER_LOOP(n, c, x) \ |
Jason Cooper | 0d706ef | 2010-09-14 09:45:39 -0400 | [diff] [blame] | 457 | ((c) = ((c) >> 8) ^ crc##n##_table[((c) ^ (x)) & 0xff]) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 458 | |
Greg Kroah-Hartman | 36ef9a1 | 2010-10-05 10:02:49 -0700 | [diff] [blame] | 459 | u8 BCMROMFN(hndcrc8) (u8 *pdata, /* pointer to array of data to process */ |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 460 | uint nbytes, /* number of input data bytes to process */ |
Greg Kroah-Hartman | 36ef9a1 | 2010-10-05 10:02:49 -0700 | [diff] [blame] | 461 | u8 crc /* either CRC8_INIT_VALUE or previous return value */ |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 462 | ) { |
| 463 | /* hard code the crc loop instead of using CRC_INNER_LOOP macro |
Greg Kroah-Hartman | 36ef9a1 | 2010-10-05 10:02:49 -0700 | [diff] [blame] | 464 | * to avoid the undefined and unnecessary (u8 >> 8) operation. |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 465 | */ |
| 466 | while (nbytes-- > 0) |
| 467 | crc = crc8_table[(crc ^ *pdata++) & 0xff]; |
| 468 | |
| 469 | return crc; |
| 470 | } |
| 471 | |
| 472 | /******************************************************************************* |
| 473 | * crc16 |
| 474 | * |
| 475 | * Computes a crc16 over the input data using the polynomial: |
| 476 | * |
| 477 | * x^16 + x^12 +x^5 + 1 |
| 478 | * |
| 479 | * The caller provides the initial value (either CRC16_INIT_VALUE |
| 480 | * or the previous returned value) to allow for processing of |
| 481 | * discontiguous blocks of data. When generating the CRC the |
| 482 | * caller is responsible for complementing the final return value |
| 483 | * and inserting it into the byte stream. When checking, a final |
| 484 | * return value of CRC16_GOOD_VALUE indicates a valid CRC. |
| 485 | * |
| 486 | * Reference: Dallas Semiconductor Application Note 27 |
| 487 | * Williams, Ross N., "A Painless Guide to CRC Error Detection Algorithms", |
| 488 | * ver 3, Aug 1993, ross@guest.adelaide.edu.au, Rocksoft Pty Ltd., |
| 489 | * ftp://ftp.rocksoft.com/clients/rocksoft/papers/crc_v3.txt |
| 490 | * |
| 491 | * **************************************************************************** |
| 492 | */ |
| 493 | |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 494 | static const u16 crc16_table[256] = { |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 495 | 0x0000, 0x1189, 0x2312, 0x329B, 0x4624, 0x57AD, 0x6536, 0x74BF, |
| 496 | 0x8C48, 0x9DC1, 0xAF5A, 0xBED3, 0xCA6C, 0xDBE5, 0xE97E, 0xF8F7, |
| 497 | 0x1081, 0x0108, 0x3393, 0x221A, 0x56A5, 0x472C, 0x75B7, 0x643E, |
| 498 | 0x9CC9, 0x8D40, 0xBFDB, 0xAE52, 0xDAED, 0xCB64, 0xF9FF, 0xE876, |
| 499 | 0x2102, 0x308B, 0x0210, 0x1399, 0x6726, 0x76AF, 0x4434, 0x55BD, |
| 500 | 0xAD4A, 0xBCC3, 0x8E58, 0x9FD1, 0xEB6E, 0xFAE7, 0xC87C, 0xD9F5, |
| 501 | 0x3183, 0x200A, 0x1291, 0x0318, 0x77A7, 0x662E, 0x54B5, 0x453C, |
| 502 | 0xBDCB, 0xAC42, 0x9ED9, 0x8F50, 0xFBEF, 0xEA66, 0xD8FD, 0xC974, |
| 503 | 0x4204, 0x538D, 0x6116, 0x709F, 0x0420, 0x15A9, 0x2732, 0x36BB, |
| 504 | 0xCE4C, 0xDFC5, 0xED5E, 0xFCD7, 0x8868, 0x99E1, 0xAB7A, 0xBAF3, |
| 505 | 0x5285, 0x430C, 0x7197, 0x601E, 0x14A1, 0x0528, 0x37B3, 0x263A, |
| 506 | 0xDECD, 0xCF44, 0xFDDF, 0xEC56, 0x98E9, 0x8960, 0xBBFB, 0xAA72, |
| 507 | 0x6306, 0x728F, 0x4014, 0x519D, 0x2522, 0x34AB, 0x0630, 0x17B9, |
| 508 | 0xEF4E, 0xFEC7, 0xCC5C, 0xDDD5, 0xA96A, 0xB8E3, 0x8A78, 0x9BF1, |
| 509 | 0x7387, 0x620E, 0x5095, 0x411C, 0x35A3, 0x242A, 0x16B1, 0x0738, |
| 510 | 0xFFCF, 0xEE46, 0xDCDD, 0xCD54, 0xB9EB, 0xA862, 0x9AF9, 0x8B70, |
| 511 | 0x8408, 0x9581, 0xA71A, 0xB693, 0xC22C, 0xD3A5, 0xE13E, 0xF0B7, |
| 512 | 0x0840, 0x19C9, 0x2B52, 0x3ADB, 0x4E64, 0x5FED, 0x6D76, 0x7CFF, |
| 513 | 0x9489, 0x8500, 0xB79B, 0xA612, 0xD2AD, 0xC324, 0xF1BF, 0xE036, |
| 514 | 0x18C1, 0x0948, 0x3BD3, 0x2A5A, 0x5EE5, 0x4F6C, 0x7DF7, 0x6C7E, |
| 515 | 0xA50A, 0xB483, 0x8618, 0x9791, 0xE32E, 0xF2A7, 0xC03C, 0xD1B5, |
| 516 | 0x2942, 0x38CB, 0x0A50, 0x1BD9, 0x6F66, 0x7EEF, 0x4C74, 0x5DFD, |
| 517 | 0xB58B, 0xA402, 0x9699, 0x8710, 0xF3AF, 0xE226, 0xD0BD, 0xC134, |
| 518 | 0x39C3, 0x284A, 0x1AD1, 0x0B58, 0x7FE7, 0x6E6E, 0x5CF5, 0x4D7C, |
| 519 | 0xC60C, 0xD785, 0xE51E, 0xF497, 0x8028, 0x91A1, 0xA33A, 0xB2B3, |
| 520 | 0x4A44, 0x5BCD, 0x6956, 0x78DF, 0x0C60, 0x1DE9, 0x2F72, 0x3EFB, |
| 521 | 0xD68D, 0xC704, 0xF59F, 0xE416, 0x90A9, 0x8120, 0xB3BB, 0xA232, |
| 522 | 0x5AC5, 0x4B4C, 0x79D7, 0x685E, 0x1CE1, 0x0D68, 0x3FF3, 0x2E7A, |
| 523 | 0xE70E, 0xF687, 0xC41C, 0xD595, 0xA12A, 0xB0A3, 0x8238, 0x93B1, |
| 524 | 0x6B46, 0x7ACF, 0x4854, 0x59DD, 0x2D62, 0x3CEB, 0x0E70, 0x1FF9, |
| 525 | 0xF78F, 0xE606, 0xD49D, 0xC514, 0xB1AB, 0xA022, 0x92B9, 0x8330, |
| 526 | 0x7BC7, 0x6A4E, 0x58D5, 0x495C, 0x3DE3, 0x2C6A, 0x1EF1, 0x0F78 |
| 527 | }; |
| 528 | |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 529 | u16 BCMROMFN(hndcrc16) (u8 *pdata, /* pointer to array of data to process */ |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 530 | uint nbytes, /* number of input data bytes to process */ |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 531 | u16 crc /* either CRC16_INIT_VALUE or previous return value */ |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 532 | ) { |
| 533 | while (nbytes-- > 0) |
| 534 | CRC_INNER_LOOP(16, crc, *pdata++); |
| 535 | return crc; |
| 536 | } |
| 537 | |
| 538 | /* |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 539 | * Traverse a string of 1-byte tag/1-byte length/variable-length value |
| 540 | * triples, returning a pointer to the substring whose first element |
| 541 | * matches tag |
| 542 | */ |
Jason Cooper | a2627bc | 2010-09-14 09:45:31 -0400 | [diff] [blame] | 543 | bcm_tlv_t *BCMROMFN(bcm_parse_tlvs) (void *buf, int buflen, uint key) |
| 544 | { |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 545 | bcm_tlv_t *elt; |
| 546 | int totlen; |
| 547 | |
| 548 | elt = (bcm_tlv_t *) buf; |
| 549 | totlen = buflen; |
| 550 | |
| 551 | /* find tagged parameter */ |
| 552 | while (totlen >= 2) { |
| 553 | int len = elt->len; |
| 554 | |
| 555 | /* validate remaining totlen */ |
| 556 | if ((elt->id == key) && (totlen >= (len + 2))) |
Jason Cooper | 90ea229 | 2010-09-14 09:45:32 -0400 | [diff] [blame] | 557 | return elt; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 558 | |
Greg Kroah-Hartman | 36ef9a1 | 2010-10-05 10:02:49 -0700 | [diff] [blame] | 559 | elt = (bcm_tlv_t *) ((u8 *) elt + (len + 2)); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 560 | totlen -= (len + 2); |
| 561 | } |
| 562 | |
| 563 | return NULL; |
| 564 | } |
| 565 | |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 566 | |
| 567 | #if defined(BCMDBG) |
| 568 | int |
Greg Kroah-Hartman | 66cbd3a | 2010-10-08 11:05:47 -0700 | [diff] [blame] | 569 | bcm_format_flags(const bcm_bit_desc_t *bd, u32 flags, char *buf, int len) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 570 | { |
| 571 | int i; |
| 572 | char *p = buf; |
| 573 | char hexstr[16]; |
| 574 | int slen = 0, nlen = 0; |
Greg Kroah-Hartman | 66cbd3a | 2010-10-08 11:05:47 -0700 | [diff] [blame] | 575 | u32 bit; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 576 | const char *name; |
| 577 | |
| 578 | if (len < 2 || !buf) |
| 579 | return 0; |
| 580 | |
| 581 | buf[0] = '\0'; |
| 582 | |
| 583 | for (i = 0; flags != 0; i++) { |
| 584 | bit = bd[i].bit; |
| 585 | name = bd[i].name; |
| 586 | if (bit == 0 && flags != 0) { |
| 587 | /* print any unnamed bits */ |
| 588 | snprintf(hexstr, 16, "0x%X", flags); |
| 589 | name = hexstr; |
| 590 | flags = 0; /* exit loop */ |
| 591 | } else if ((flags & bit) == 0) |
| 592 | continue; |
| 593 | flags &= ~bit; |
| 594 | nlen = strlen(name); |
| 595 | slen += nlen; |
| 596 | /* count btwn flag space */ |
| 597 | if (flags != 0) |
| 598 | slen += 1; |
| 599 | /* need NULL char as well */ |
| 600 | if (len <= slen) |
| 601 | break; |
| 602 | /* copy NULL char but don't count it */ |
| 603 | strncpy(p, name, nlen + 1); |
| 604 | p += nlen; |
| 605 | /* copy btwn flag space and NULL char */ |
| 606 | if (flags != 0) |
| 607 | p += snprintf(p, 2, " "); |
| 608 | len -= slen; |
| 609 | } |
| 610 | |
| 611 | /* indicate the str was too short */ |
| 612 | if (flags != 0) { |
| 613 | if (len < 2) |
| 614 | p -= 2 - len; /* overwrite last char */ |
| 615 | p += snprintf(p, 2, ">"); |
| 616 | } |
| 617 | |
| 618 | return (int)(p - buf); |
| 619 | } |
| 620 | |
| 621 | /* print bytes formatted as hex to a string. return the resulting string length */ |
| 622 | int bcm_format_hex(char *str, const void *bytes, int len) |
| 623 | { |
| 624 | int i; |
| 625 | char *p = str; |
Greg Kroah-Hartman | 36ef9a1 | 2010-10-05 10:02:49 -0700 | [diff] [blame] | 626 | const u8 *src = (const u8 *)bytes; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 627 | |
| 628 | for (i = 0; i < len; i++) { |
| 629 | p += snprintf(p, 3, "%02X", *src); |
| 630 | src++; |
| 631 | } |
| 632 | return (int)(p - str); |
| 633 | } |
| 634 | #endif /* defined(BCMDBG) */ |
| 635 | |
| 636 | /* pretty hex print a contiguous buffer */ |
Greg Kroah-Hartman | 580a0bd | 2010-10-05 11:09:48 -0700 | [diff] [blame] | 637 | void prhex(const char *msg, unsigned char *buf, uint nbytes) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 638 | { |
| 639 | char line[128], *p; |
| 640 | int len = sizeof(line); |
| 641 | int nchar; |
| 642 | uint i; |
| 643 | |
| 644 | if (msg && (msg[0] != '\0')) |
| 645 | printf("%s:\n", msg); |
| 646 | |
| 647 | p = line; |
| 648 | for (i = 0; i < nbytes; i++) { |
| 649 | if (i % 16 == 0) { |
| 650 | nchar = snprintf(p, len, " %04d: ", i); /* line prefix */ |
| 651 | p += nchar; |
| 652 | len -= nchar; |
| 653 | } |
| 654 | if (len > 0) { |
| 655 | nchar = snprintf(p, len, "%02x ", buf[i]); |
| 656 | p += nchar; |
| 657 | len -= nchar; |
| 658 | } |
| 659 | |
| 660 | if (i % 16 == 15) { |
| 661 | printf("%s\n", line); /* flush line */ |
| 662 | p = line; |
| 663 | len = sizeof(line); |
| 664 | } |
| 665 | } |
| 666 | |
| 667 | /* flush last partial line */ |
| 668 | if (p != line) |
| 669 | printf("%s\n", line); |
| 670 | } |
| 671 | |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 672 | char *bcm_chipname(uint chipid, char *buf, uint len) |
| 673 | { |
| 674 | const char *fmt; |
| 675 | |
| 676 | fmt = ((chipid > 0xa000) || (chipid < 0x4000)) ? "%d" : "%x"; |
| 677 | snprintf(buf, len, fmt, chipid); |
| 678 | return buf; |
| 679 | } |
| 680 | |
Greg Kroah-Hartman | 36ef9a1 | 2010-10-05 10:02:49 -0700 | [diff] [blame] | 681 | uint BCMROMFN(bcm_bitcount) (u8 *bitmap, uint length) |
Jason Cooper | a2627bc | 2010-09-14 09:45:31 -0400 | [diff] [blame] | 682 | { |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 683 | uint bitcount = 0, i; |
Greg Kroah-Hartman | 36ef9a1 | 2010-10-05 10:02:49 -0700 | [diff] [blame] | 684 | u8 tmp; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 685 | for (i = 0; i < length; i++) { |
| 686 | tmp = bitmap[i]; |
| 687 | while (tmp) { |
| 688 | bitcount++; |
| 689 | tmp &= (tmp - 1); |
| 690 | } |
| 691 | } |
| 692 | return bitcount; |
| 693 | } |