src/bin/fwcontrol/fwcrom.c

   1 /*-
   2  * Copyright (c) 2002-2003
   3  *      Hidetoshi Shimokawa. All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *
  16  *      This product includes software developed by Hidetoshi Shimokawa.
  17  *
  18  * 4. Neither the name of the author nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #ifdef __FreeBSD__
  36 #include <sys/cdefs.h>
  37 __FBSDID("$FreeBSD: src/sys/dev/firewire/fwcrom.c,v 1.14 2006/02/04 21:37:39 imp Exp $");
  38 #endif
  39
  40 #include <sys/param.h>
  41
  42 #ifdef _BOOT
  43 #include <stand.h>
  44 #include <bootstrap.h>
  45 #else
  46 #if defined(_KERNEL) || defined(TEST)
  47 #ifdef __HAIKU__
  48 #include "queue.h"
  49 #else
  50 #include <sys/queue.h>
  51 #endif
  52 #endif
  53 #ifdef _KERNEL
  54 #ifndef __HAIKU__
  55 #include <sys/systm.h>
  56 #include <sys/kernel.h>
  57 #else
  58 #include <OS.h>
  59 #include <KernelExport.h>
  60 #include <ByteOrder.h>
  61 #include <string.h>
  62 #include <strings.h>
  63 #include "fwglue.h"
  64 #endif
  65 #else
  66 #include <netinet/in.h>
  67 #include <fcntl.h>
  68 #include <stdio.h>
  69 #include <err.h>
  70 #include <stdlib.h>
  71 #include <string.h>
  72 #endif
  73 #endif
  74 #ifdef __HAIKU__
  75 #include <stdint.h>
  76 #endif
  77
  78 #if defined( __DragonFly__) || defined(__HAIKU__)
  79 #include "firewire.h"
  80 #include "iec13213.h"
  81 #define vm_offset_t uint32_t
  82 #else
  83 #include <dev/firewire/firewire.h>
  84 #include <dev/firewire/iec13213.h>
  85 #endif
  86
  87 #define MAX_ROM (1024 - sizeof(uint32_t) * 5)
  88 #define CROM_END(cc) ((vm_offset_t)(cc)->stack[0].dir + MAX_ROM - 1)
  89
  90 void
  91 crom_init_context(struct crom_context *cc, uint32_t *p)
  92 {
  93         struct csrhdr *hdr;
  94
  95         hdr = (struct csrhdr *)p;
  96         if (hdr->info_len <= 1) {
  97                 /* minimum or invalid ROM */
  98                 cc->depth = -1;
  99                 return;
 100         }
 101         p += 1 + hdr->info_len;
 102
 103         /* check size of root directory */
 104         if (((struct csrdirectory *)p)->crc_len == 0) {
 105                 cc->depth = -1;
 106                 return;
 107         }
 108         cc->depth = 0;
 109         cc->stack[0].dir = (struct csrdirectory *)p;
 110         cc->stack[0].index = 0;
 111 }
 112
 113 struct csrreg *
 114 crom_get(struct crom_context *cc)
 115 {
 116         struct crom_ptr *ptr;
 117
 118         ptr = &cc->stack[cc->depth];
 119         return (&ptr->dir->entry[ptr->index]);
 120 }
 121
 122 void
 123 crom_next(struct crom_context *cc)
 124 {
 125         struct crom_ptr *ptr;
 126         struct csrreg *reg;
 127
 128         if (cc->depth < 0)
 129                 return;
 130         reg = crom_get(cc);
 131         if ((reg->key & CSRTYPE_MASK) == CSRTYPE_D) {
 132                 if (cc->depth >= CROM_MAX_DEPTH) {
 133                         printf("crom_next: too deep\n");
 134                         goto again;
 135                 }
 136                 cc->depth ++;
 137
 138                 ptr = &cc->stack[cc->depth];
 139                 ptr->dir = (struct csrdirectory *) (reg + reg->val);
 140                 ptr->index = 0;
 141                 goto check;
 142         }
 143 again:
 144         ptr = &cc->stack[cc->depth];
 145         ptr->index ++;
 146 check:
 147         if (ptr->index < ptr->dir->crc_len &&
 148                         (vm_offset_t)crom_get(cc) <= CROM_END(cc))
 149                 return;
 150
 151         if (ptr->index < ptr->dir->crc_len)
 152                 printf("crom_next: bound check failed\n");
 153
 154         if (cc->depth > 0) {
 155                 cc->depth--;
 156                 goto again;
 157         }
 158         /* no more data */
 159         cc->depth = -1;
 160 }
 161
 162
 163 struct csrreg *
 164 crom_search_key(struct crom_context *cc, uint8_t key)
 165 {
 166         struct csrreg *reg;
 167
 168         while(cc->depth >= 0) {
 169                 reg = crom_get(cc);
 170                 if (reg->key == key)
 171                         return reg;
 172                 crom_next(cc);
 173         }
 174         return NULL;
 175 }
 176
 177 int
 178 crom_has_specver(uint32_t *p, uint32_t spec, uint32_t ver)
 179 {
 180         struct csrreg *reg;
 181         struct crom_context c, *cc;
 182         int state = 0;
 183
 184         cc = &c;
 185         crom_init_context(cc, p);
 186         while(cc->depth >= 0) {
 187                 reg = crom_get(cc);
 188                 if (state == 0) {
 189                         if (reg->key == CSRKEY_SPEC && reg->val == spec)
 190                                 state = 1;
 191                         else
 192                                 state = 0;
 193                 } else {
 194                         if (reg->key == CSRKEY_VER && reg->val == ver)
 195                                 return 1;
 196                         else
 197                                 state = 0;
 198                 }
 199                 crom_next(cc);
 200         }
 201         return 0;
 202 }
 203
 204 void
 205 crom_parse_text(struct crom_context *cc, char *buf, int len)
 206 {
 207         struct csrreg *reg;
 208         struct csrtext *textleaf;
 209         uint32_t *bp;
 210         int i, qlen;
 211         static char *nullstr = "(null)";
 212
 213         if (cc->depth < 0)
 214                 return;
 215
 216         reg = crom_get(cc);
 217         if (reg->key != CROM_TEXTLEAF ||
 218                         (vm_offset_t)(reg + reg->val) > CROM_END(cc)) {
 219                 strncpy(buf, nullstr, len);
 220                 return;
 221         }
 222         textleaf = (struct csrtext *)(reg + reg->val);
 223
 224         if ((vm_offset_t)textleaf + textleaf->crc_len > CROM_END(cc)) {
 225                 strncpy(buf, nullstr, len);
 226                 return;
 227         }
 228
 229         /* XXX should check spec and type */
 230
 231         bp = (uint32_t *)&buf[0];
 232         qlen = textleaf->crc_len - 2;
 233         if (len < qlen * 4)
 234                 qlen = len/4;
 235         for (i = 0; i < qlen; i ++)
 236                 *bp++ = ntohl(textleaf->text[i]);
 237         /* make sure to terminate the string */
 238         if (len <= qlen * 4)
 239                 buf[len - 1] = 0;
 240         else
 241                 buf[qlen * 4] = 0;
 242 }
 243
 244 uint16_t
 245 crom_crc(uint32_t *ptr, int len)
 246 {
 247         int i, shift;
 248         uint32_t data, sum, crc = 0;
 249
 250         for (i = 0; i < len; i++) {
 251                 data = ptr[i];
 252                 for (shift = 28; shift >= 0; shift -= 4) {
 253                         sum = ((crc >> 12) ^ (data >> shift)) & 0xf;
 254                         crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ sum;
 255                 }
 256                 crc &= 0xffff;
 257         }
 258         return((uint16_t) crc);
 259 }
 260
 261 #if !defined(_KERNEL) && !defined(_BOOT)
 262 static void
 263 crom_desc_specver(uint32_t spec, uint32_t ver, char *buf, int len)
 264 {
 265         char *s = NULL;
 266
 267         if (spec == CSRVAL_ANSIT10 || spec == 0) {
 268                 switch (ver) {
 269                 case CSRVAL_T10SBP2:
 270                         s = "SBP-2";
 271                         break;
 272                 default:
 273                         if (spec != 0)
 274                                 s = "unknown ANSIT10";
 275                 }
 276         }
 277         if (spec == CSRVAL_1394TA || spec == 0) {
 278                 switch (ver) {
 279                 case CSR_PROTAVC:
 280                         s = "AV/C";
 281                         break;
 282                 case CSR_PROTCAL:
 283                         s = "CAL";
 284                         break;
 285                 case CSR_PROTEHS:
 286                         s = "EHS";
 287                         break;
 288                 case CSR_PROTHAVI:
 289                         s = "HAVi";
 290                         break;
 291                 case CSR_PROTCAM104:
 292                         s = "1394 Cam 1.04";
 293                         break;
 294                 case CSR_PROTCAM120:
 295                         s = "1394 Cam 1.20";
 296                         break;
 297                 case CSR_PROTCAM130:
 298                         s = "1394 Cam 1.30";
 299                         break;
 300                 case CSR_PROTDPP:
 301                         s = "1394 Direct print";
 302                         break;
 303                 case CSR_PROTIICP:
 304                         s = "Industrial & Instrument";
 305                         break;
 306                 default:
 307                         if (spec != 0)
 308                                 s = "unknown 1394TA";
 309                 }
 310         }
 311         if (s != NULL)
 312                 snprintf(buf, len, "%s", s);
 313 }
 314
 315 char *
 316 crom_desc(struct crom_context *cc, char *buf, int len)
 317 {
 318         struct csrreg *reg;
 319         struct csrdirectory *dir;
 320         char *desc;
 321         uint16_t crc;
 322
 323         reg = crom_get(cc);
 324         switch (reg->key & CSRTYPE_MASK) {
 325         case CSRTYPE_I:
 326 #if 0
 327                 len -= snprintf(buf, len, "%d", reg->val);
 328                 buf += strlen(buf);
 329 #else
 330                 *buf = '\0';
 331 #endif
 332                 break;
 333         case CSRTYPE_C:
 334                 len -= snprintf(buf, len, "offset=0x%04x(%d)",
 335                                                 reg->val, reg->val);
 336                 buf += strlen(buf);
 337                 break;
 338         case CSRTYPE_L:
 339                 /* XXX fall through */
 340         case CSRTYPE_D:
 341                 dir = (struct csrdirectory *) (reg + reg->val);
 342                 crc = crom_crc((uint32_t *)&dir->entry[0], dir->crc_len);
 343                 len -= snprintf(buf, len, "len=%d crc=0x%04x(%s) ",
 344                         dir->crc_len, dir->crc,
 345                         (crc == dir->crc) ? "OK" : "NG");
 346                 buf += strlen(buf);
 347         }
 348         switch (reg->key) {
 349         case 0x03:
 350                 desc = "module_vendor_ID";
 351                 break;
 352         case 0x04:
 353                 desc = "hardware_version";
 354                 break;
 355         case 0x0c:
 356                 desc = "node_capabilities";
 357                 break;
 358         case 0x12:
 359                 desc = "unit_spec_ID";
 360                 break;
 361         case 0x13:
 362                 desc = "unit_sw_version";
 363                 crom_desc_specver(0, reg->val, buf, len);
 364                 break;
 365         case 0x14:
 366                 desc = "logical_unit_number";
 367                 break;
 368         case 0x17:
 369                 desc = "model_ID";
 370                 break;
 371         case 0x38:
 372                 desc = "command_set_spec_ID";
 373                 break;
 374         case 0x39:
 375                 desc = "command_set";
 376                 break;
 377         case 0x3a:
 378                 desc = "unit_characteristics";
 379                 break;
 380         case 0x3b:
 381                 desc = "command_set_revision";
 382                 break;
 383         case 0x3c:
 384                 desc = "firmware_revision";
 385                 break;
 386         case 0x3d:
 387                 desc = "reconnect_timeout";
 388                 break;
 389         case 0x54:
 390                 desc = "management_agent";
 391                 break;
 392         case 0x81:
 393                 desc = "text_leaf";
 394                 crom_parse_text(cc, buf + strlen(buf), len);
 395                 break;
 396         case 0xd1:
 397                 desc = "unit_directory";
 398                 break;
 399         case 0xd4:
 400                 desc = "logical_unit_directory";
 401                 break;
 402         default:
 403                 desc = "unknown";
 404         }
 405         return desc;
 406 }
 407 #endif
 408
 409 #if defined(_KERNEL) || defined(_BOOT) || defined(TEST)
 410
 411 int
 412 crom_add_quad(struct crom_chunk *chunk, uint32_t entry)
 413 {
 414         int index;
 415
 416         index = chunk->data.crc_len;
 417         if (index >= CROM_MAX_CHUNK_LEN - 1) {
 418                 printf("too large chunk %d\n", index);
 419                 return(-1);
 420         }
 421         chunk->data.buf[index] = entry;
 422         chunk->data.crc_len++;
 423         return(index);
 424 }
 425
 426 int
 427 crom_add_entry(struct crom_chunk *chunk, int key, int val)
 428 {
 429         union
 430         {
 431                 struct csrreg reg;
 432                 uint32_t i;
 433         } foo;
 434
 435         foo.reg.key = key;
 436         foo.reg.val = val;
 437         return (crom_add_quad(chunk, foo.i));
 438 }
 439
 440 int
 441 crom_add_chunk(struct crom_src *src, struct crom_chunk *parent,
 442                                 struct crom_chunk *child, int key)
 443 {
 444         int index;
 445
 446         if (parent == NULL) {
 447                 STAILQ_INSERT_TAIL(&src->chunk_list, child, link);
 448                 return(0);
 449         }
 450
 451         index = crom_add_entry(parent, key, 0);
 452         if (index < 0) {
 453                 return(-1);
 454         }
 455         child->ref_chunk = parent;
 456         child->ref_index = index;
 457         STAILQ_INSERT_TAIL(&src->chunk_list, child, link);
 458         return(index);
 459 }
 460
 461 #define MAX_TEXT ((CROM_MAX_CHUNK_LEN + 1) * 4 - sizeof(struct csrtext))
 462 int
 463 crom_add_simple_text(struct crom_src *src, struct crom_chunk *parent,
 464                                 struct crom_chunk *chunk, const char *buf)
 465 {
 466         struct csrtext *tl;
 467         uint32_t *p;
 468         int len, i;
 469         char t[MAX_TEXT];
 470
 471         len = strlen(buf);
 472         if (len > MAX_TEXT) {
 473 #if defined(__DragonFly__) || __FreeBSD_version < 500000
 474                 printf("text(%d) truncated to %zd.\n", len, MAX_TEXT);
 475 #else
 476                 printf("text(%d) truncated to %zd.\n", len, MAX_TEXT);
 477 #endif
 478                 len = MAX_TEXT;
 479         }
 480
 481         tl = (struct csrtext *) &chunk->data;
 482         tl->crc_len = howmany(sizeof(struct csrtext) + len, sizeof(uint32_t));
 483         tl->spec_id = 0;
 484         tl->spec_type = 0;
 485         tl->lang_id = 0;
 486         bzero(&t[0], roundup2(len, sizeof(uint32_t)));
 487         bcopy(buf, &t[0], len);
 488         p = (uint32_t *)&t[0];
 489         for (i = 0; i < howmany(len, sizeof(uint32_t)); i ++)
 490                 tl->text[i] = ntohl(*p++);
 491         return (crom_add_chunk(src, parent, chunk, CROM_TEXTLEAF));
 492 }
 493
 494 static int
 495 crom_copy(uint32_t *src, uint32_t *dst, int *offset, int len, int maxlen)
 496 {
 497         if (*offset + len > maxlen) {
 498                 printf("Config. ROM is too large for the buffer\n");
 499                 return(-1);
 500         }
 501         bcopy(src, (char *)(dst + *offset), len * sizeof(uint32_t));
 502         *offset += len;
 503         return(0);
 504 }
 505
 506 int
 507 crom_load(struct crom_src *src, uint32_t *buf, int maxlen)
 508 {
 509         struct crom_chunk *chunk, *parent;
 510         struct csrhdr *hdr;
 511 #if defined(_KERNEL) || defined(_BOOT)
 512         uint32_t *ptr;
 513         int i;
 514 #endif
 515         int count, offset;
 516         int len;
 517
 518         offset = 0;
 519         /* Determine offset */
 520         STAILQ_FOREACH(chunk, &src->chunk_list, link) {
 521                 chunk->offset = offset;
 522                 /* Assume the offset of the parent is already known */
 523                 parent = chunk->ref_chunk;
 524                 if (parent != NULL) {
 525                         struct csrreg *reg;
 526                         reg = (struct csrreg *)
 527                                 &parent->data.buf[chunk->ref_index];
 528                         reg->val = offset -
 529                                 (parent->offset + 1 + chunk->ref_index);
 530                 }
 531                 offset += 1 + chunk->data.crc_len;
 532         }
 533
 534         /* Calculate CRC and dump to the buffer */
 535         len = 1 + src->hdr.info_len;
 536         count = 0;
 537         if (crom_copy((uint32_t *)&src->hdr, buf, &count, len, maxlen) < 0)
 538                 return(-1);
 539         STAILQ_FOREACH(chunk, &src->chunk_list, link) {
 540                 chunk->data.crc =
 541                         crom_crc(&chunk->data.buf[0], chunk->data.crc_len);
 542
 543                 len = 1 + chunk->data.crc_len;
 544                 if (crom_copy((uint32_t *)&chunk->data, buf,
 545                                         &count, len, maxlen) < 0)
 546                         return(-1);
 547         }
 548         hdr = (struct csrhdr *)buf;
 549         hdr->crc_len = count - 1;
 550         hdr->crc = crom_crc(&buf[1], hdr->crc_len);
 551
 552 #if defined(_KERNEL) || defined(_BOOT)
 553         /* byte swap */
 554         ptr = buf;
 555         for (i = 0; i < count; i ++) {
 556                 *ptr = htonl(*ptr);
 557                 ptr++;
 558         }
 559 #endif
 560
 561         return(count);
 562 }
 563 #endif
 564
 565 #ifdef TEST
 566 int
 567 main () {
 568         struct crom_src src;
 569         struct crom_chunk root,unit1,unit2,unit3;
 570         struct crom_chunk text1,text2,text3,text4,text5,text6,text7;
 571         uint32_t buf[256], *p;
 572         int i;
 573
 574         bzero(&src, sizeof(src));
 575         bzero(&root, sizeof(root));
 576         bzero(&unit1, sizeof(unit1));
 577         bzero(&unit2, sizeof(unit2));
 578         bzero(&unit3, sizeof(unit3));
 579         bzero(&text1, sizeof(text1));
 580         bzero(&text2, sizeof(text2));
 581         bzero(&text3, sizeof(text3));
 582         bzero(&text3, sizeof(text4));
 583         bzero(&text3, sizeof(text5));
 584         bzero(&text3, sizeof(text6));
 585         bzero(&text3, sizeof(text7));
 586         bzero(buf, sizeof(buf));
 587
 588         /* BUS info sample */
 589         src.hdr.info_len = 4;
 590         src.businfo.bus_name = CSR_BUS_NAME_IEEE1394;
 591         src.businfo.eui64.hi = 0x11223344;
 592         src.businfo.eui64.lo = 0x55667788;
 593         src.businfo.link_spd = FWSPD_S400;
 594         src.businfo.generation = 0;
 595         src.businfo.max_rom = MAXROM_4;
 596         src.businfo.max_rec = 10;
 597         src.businfo.cyc_clk_acc = 100;
 598         src.businfo.pmc = 0;
 599         src.businfo.bmc = 1;
 600         src.businfo.isc = 1;
 601         src.businfo.cmc = 1;
 602         src.businfo.irmc = 1;
 603         STAILQ_INIT(&src.chunk_list);
 604
 605         /* Root directory */
 606         crom_add_chunk(&src, NULL, &root, 0);
 607         crom_add_entry(&root, CSRKEY_NCAP, 0x123456);
 608         /* private company_id */
 609         crom_add_entry(&root, CSRKEY_VENDOR, 0xacde48);
 610
 611 #ifdef __DragonFly__
 612         crom_add_simple_text(&src, &root, &text1, "DragonFly");
 613         crom_add_entry(&root, CSRKEY_HW, __DragonFly_cc_version);
 614         crom_add_simple_text(&src, &root, &text2, "DragonFly-1");
 615 #else
 616         crom_add_simple_text(&src, &root, &text1, "FreeBSD");
 617         crom_add_entry(&root, CSRKEY_HW, __FreeBSD_version);
 618         crom_add_simple_text(&src, &root, &text2, "FreeBSD-5");
 619 #endif
 620
 621         /* SBP unit directory */
 622         crom_add_chunk(&src, &root, &unit1, CROM_UDIR);
 623         crom_add_entry(&unit1, CSRKEY_SPEC, CSRVAL_ANSIT10);
 624         crom_add_entry(&unit1, CSRKEY_VER, CSRVAL_T10SBP2);
 625         crom_add_entry(&unit1, CSRKEY_COM_SPEC, CSRVAL_ANSIT10);
 626         crom_add_entry(&unit1, CSRKEY_COM_SET, CSRVAL_SCSI);
 627         /* management_agent */
 628         crom_add_entry(&unit1, CROM_MGM, 0x1000);
 629         crom_add_entry(&unit1, CSRKEY_UNIT_CH, (10<<8) | 8);
 630         /* Device type and LUN */
 631         crom_add_entry(&unit1, CROM_LUN, 0);
 632         crom_add_entry(&unit1, CSRKEY_MODEL, 1);
 633         crom_add_simple_text(&src, &unit1, &text3, "scsi_target");
 634
 635         /* RFC2734 IPv4 over IEEE1394 */
 636         crom_add_chunk(&src, &root, &unit2, CROM_UDIR);
 637         crom_add_entry(&unit2, CSRKEY_SPEC, CSRVAL_IETF);
 638         crom_add_simple_text(&src, &unit2, &text4, "IANA");
 639         crom_add_entry(&unit2, CSRKEY_VER, 1);
 640         crom_add_simple_text(&src, &unit2, &text5, "IPv4");
 641
 642         /* RFC3146 IPv6 over IEEE1394 */
 643         crom_add_chunk(&src, &root, &unit3, CROM_UDIR);
 644         crom_add_entry(&unit3, CSRKEY_SPEC, CSRVAL_IETF);
 645         crom_add_simple_text(&src, &unit3, &text6, "IANA");
 646         crom_add_entry(&unit3, CSRKEY_VER, 2);
 647         crom_add_simple_text(&src, &unit3, &text7, "IPv6");
 648
 649         crom_load(&src, buf, 256);
 650         p = buf;
 651 #define DUMP_FORMAT     "%08x %08x %08x %08x %08x %08x %08x %08x\n"
 652         for (i = 0; i < 256/8; i ++) {
 653                 printf(DUMP_FORMAT,
 654                         p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
 655                 p += 8;
 656         }
 657         return(0);
 658 }
 659 #endif