sys/bus/firewire/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  * $DragonFly: src/sys/bus/firewire/fwcrom.c,v 1.10 2007/05/13 18:33:56 swildner Exp $
  35  */
  36
  37 #ifndef __DragonFly__
  38 #include <sys/cdefs.h>
  39 __FBSDID("$FreeBSD: src/sys/dev/firewire/fwcrom.c,v 1.9 2003/10/02 04:06:55 simokawa Exp $");
  40 #endif
  41
  42 #include <sys/param.h>
  43 #if defined(_KERNEL) || defined(TEST)
  44 #include <sys/queue.h>
  45 #endif
  46 #ifdef _KERNEL
  47 #include <sys/systm.h>
  48 #include <sys/kernel.h>
  49 #else
  50 #include <netinet/in.h>
  51 #include <fcntl.h>
  52 #include <stdio.h>
  53 #include <err.h>
  54 #include <stdlib.h>
  55 #include <string.h>
  56 #define ksnprintf       snprintf        /* sigh. used by fwcontrol */
  57 #define kprintf         printf
  58 #endif
  59
  60 #ifdef __DragonFly__
  61 #include "firewire.h"
  62 #include "iec13213.h"
  63 #else
  64 #include <dev/firewire/firewire.h>
  65 #include <dev/firewire/iec13213.h>
  66 #endif
  67
  68 #define MAX_ROM (1024 - sizeof(u_int32_t) * 5)
  69 #define CROM_END(cc) ((vm_offset_t)(cc)->stack[0].dir + MAX_ROM - 1)
  70
  71 void
  72 crom_init_context(struct crom_context *cc, u_int32_t *p)
  73 {
  74         struct csrhdr *hdr;
  75
  76         hdr = (struct csrhdr *)p;
  77         if (hdr->info_len == 0) {
  78                 /*
  79                  * This isn't supposed to happen but it does.   The problem
  80                  * is possibly related to fw_attach_dev()'s going from an
  81                  * FWDEVINIT to a FWDEVATTACHED state, or in a host<->host
  82                  * situation where one host gets the root directory for
  83                  * another before the other has actually initialized it.
  84                  */
  85                 kprintf("crom_init_context: WARNING, info_len is 0\n");
  86                 cc->depth = -1;
  87                 return;
  88         }
  89         if (hdr->info_len == 1) {
  90                 /* minimum ROM */
  91                 cc->depth = -1;
  92         }
  93         p += 1 + hdr->info_len;
  94
  95         /* check size of root directory */
  96         if (((struct csrdirectory *)p)->crc_len == 0) {
  97                 cc->depth = -1;
  98                 return;
  99         }
 100         cc->depth = 0;
 101         cc->stack[0].dir = (struct csrdirectory *)p;
 102         cc->stack[0].index = 0;
 103 }
 104
 105 struct csrreg *
 106 crom_get(struct crom_context *cc)
 107 {
 108         struct crom_ptr *ptr;
 109
 110         ptr = &cc->stack[cc->depth];
 111         return (&ptr->dir->entry[ptr->index]);
 112 }
 113
 114 void
 115 crom_next(struct crom_context *cc)
 116 {
 117         struct crom_ptr *ptr;
 118         struct csrreg *reg;
 119
 120         if (cc->depth < 0)
 121                 return;
 122         reg = crom_get(cc);
 123         if ((reg->key & CSRTYPE_MASK) == CSRTYPE_D) {
 124                 if (cc->depth >= CROM_MAX_DEPTH) {
 125                         kprintf("crom_next: too deep\n");
 126                         goto again;
 127                 }
 128                 cc->depth ++;
 129
 130                 ptr = &cc->stack[cc->depth];
 131                 ptr->dir = (struct csrdirectory *) (reg + reg->val);
 132                 ptr->index = 0;
 133                 goto check;
 134         }
 135 again:
 136         ptr = &cc->stack[cc->depth];
 137         ptr->index ++;
 138 check:
 139         if (ptr->index < ptr->dir->crc_len &&
 140                         (vm_offset_t)crom_get(cc) <= CROM_END(cc))
 141                 return;
 142
 143         if (ptr->index < ptr->dir->crc_len)
 144                 kprintf("crom_next: bound check failed\n");
 145
 146         if (cc->depth > 0) {
 147                 cc->depth--;
 148                 goto again;
 149         }
 150         /* no more data */
 151         cc->depth = -1;
 152 }
 153
 154
 155 struct csrreg *
 156 crom_search_key(struct crom_context *cc, u_int8_t key)
 157 {
 158         struct csrreg *reg;
 159
 160         while(cc->depth >= 0) {
 161                 reg = crom_get(cc);
 162                 if (reg->key == key)
 163                         return reg;
 164                 crom_next(cc);
 165         }
 166         return NULL;
 167 }
 168
 169 int
 170 crom_has_specver(u_int32_t *p, u_int32_t spec, u_int32_t ver)
 171 {
 172         struct csrreg *reg;
 173         struct crom_context c, *cc;
 174         int state = 0;
 175
 176         cc = &c;
 177         crom_init_context(cc, p);
 178         while(cc->depth >= 0) {
 179                 reg = crom_get(cc);
 180                 if (state == 0) {
 181                         if (reg->key == CSRKEY_SPEC && reg->val == spec)
 182                                 state = 1;
 183                         else
 184                                 state = 0;
 185                 } else {
 186                         if (reg->key == CSRKEY_VER && reg->val == ver)
 187                                 return 1;
 188                         else
 189                                 state = 0;
 190                 }
 191                 crom_next(cc);
 192         }
 193         return 0;
 194 }
 195
 196 void
 197 crom_parse_text(struct crom_context *cc, char *buf, int len)
 198 {
 199         struct csrreg *reg;
 200         struct csrtext *textleaf;
 201         u_int32_t *bp;
 202         int i, qlen;
 203         static char *nullstr = "(null)";
 204
 205         if (cc->depth < 0)
 206                 return;
 207
 208         reg = crom_get(cc);
 209         if (reg->key != CROM_TEXTLEAF ||
 210                         (vm_offset_t)(reg + reg->val) > CROM_END(cc)) {
 211                 strncpy(buf, nullstr, len);
 212                 return;
 213         }
 214         textleaf = (struct csrtext *)(reg + reg->val);
 215
 216         if ((vm_offset_t)textleaf + textleaf->crc_len > CROM_END(cc)) {
 217                 strncpy(buf, nullstr, len);
 218                 return;
 219         }
 220
 221         /* XXX should check spec and type */
 222
 223         bp = (u_int32_t *)&buf[0];
 224         qlen = textleaf->crc_len - 2;
 225         if (len < qlen * 4)
 226                 qlen = len/4;
 227         for (i = 0; i < qlen; i ++)
 228                 *bp++ = ntohl(textleaf->text[i]);
 229         /* make sure to terminate the string */
 230         if (len <= qlen * 4)
 231                 buf[len - 1] = 0;
 232         else
 233                 buf[qlen * 4] = 0;
 234 }
 235
 236 u_int16_t
 237 crom_crc(u_int32_t *ptr, int len)
 238 {
 239         int i, shift;
 240         u_int32_t data, sum, crc = 0;
 241
 242         for (i = 0; i < len; i++) {
 243                 data = ptr[i];
 244                 for (shift = 28; shift >= 0; shift -= 4) {
 245                         sum = ((crc >> 12) ^ (data >> shift)) & 0xf;
 246                         crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ sum;
 247                 }
 248                 crc &= 0xffff;
 249         }
 250         return((u_int16_t) crc);
 251 }
 252
 253 #ifndef _KERNEL
 254 static void
 255 crom_desc_specver(u_int32_t spec, u_int32_t ver, char *buf, int len)
 256 {
 257         char *s = NULL;
 258
 259         if (spec == CSRVAL_ANSIT10 || spec == 0) {
 260                 switch (ver) {
 261                 case CSRVAL_T10SBP2:
 262                         s = "SBP-2";
 263                         break;
 264                 default:
 265                         if (spec != 0)
 266                                 s = "unknown ANSIT10";
 267                 }
 268         }
 269         if (spec == CSRVAL_1394TA || spec == 0) {
 270                 switch (ver) {
 271                 case CSR_PROTAVC:
 272                         s = "AV/C";
 273                         break;
 274                 case CSR_PROTCAL:
 275                         s = "CAL";
 276                         break;
 277                 case CSR_PROTEHS:
 278                         s = "EHS";
 279                         break;
 280                 case CSR_PROTHAVI:
 281                         s = "HAVi";
 282                         break;
 283                 case CSR_PROTCAM104:
 284                         s = "1394 Cam 1.04";
 285                         break;
 286                 case CSR_PROTCAM120:
 287                         s = "1394 Cam 1.20";
 288                         break;
 289                 case CSR_PROTCAM130:
 290                         s = "1394 Cam 1.30";
 291                         break;
 292                 case CSR_PROTDPP:
 293                         s = "1394 Direct print";
 294                         break;
 295                 case CSR_PROTIICP:
 296                         s = "Industrial & Instrument";
 297                         break;
 298                 default:
 299                         if (spec != 0)
 300                                 s = "unknown 1394TA";
 301                 }
 302         }
 303         if (s != NULL)
 304                 ksnprintf(buf, len, "%s", s);
 305 }
 306
 307 char *
 308 crom_desc(struct crom_context *cc, char *buf, int len)
 309 {
 310         struct csrreg *reg;
 311         struct csrdirectory *dir;
 312         char *desc, st;
 313         u_int16_t crc;
 314
 315         reg = crom_get(cc);
 316         switch (reg->key & CSRTYPE_MASK) {
 317         case CSRTYPE_I:
 318 #if 0
 319                 len -= ksnprintf(buf, len, "%d", reg->val);
 320                 buf += strlen(buf);
 321 #else
 322                 *buf = '\0';
 323 #endif
 324                 break;
 325         case CSRTYPE_C:
 326                 len -= ksnprintf(buf, len, "offset=0x%04x(%d)",
 327                                                 reg->val, reg->val);
 328                 buf += strlen(buf);
 329                 break;
 330         case CSRTYPE_L:
 331                 /* XXX fall through */
 332         case CSRTYPE_D:
 333                 dir = (struct csrdirectory *) (reg + reg->val);
 334                 crc = crom_crc((u_int32_t *)&dir->entry[0], dir->crc_len);
 335                 len -= ksnprintf(buf, len, "len=%d crc=0x%04x(%s) ",
 336                         dir->crc_len, dir->crc,
 337                         (crc == dir->crc) ? "OK" : "NG");
 338                 buf += strlen(buf);
 339         }
 340         switch (reg->key) {
 341         case 0x03:
 342                 desc = "module_vendor_ID";
 343                 break;
 344         case 0x04:
 345                 desc = "hardware_version";
 346                 break;
 347         case 0x0c:
 348                 desc = "node_capabilities";
 349                 break;
 350         case 0x12:
 351                 desc = "unit_spec_ID";
 352                 break;
 353         case 0x13:
 354                 desc = "unit_sw_version";
 355                 crom_desc_specver(0, reg->val, buf, len);
 356                 break;
 357         case 0x14:
 358                 desc = "logical_unit_number";
 359                 break;
 360         case 0x17:
 361                 desc = "model_ID";
 362                 break;
 363         case 0x38:
 364                 desc = "command_set_spec_ID";
 365                 break;
 366         case 0x39:
 367                 desc = "command_set";
 368                 break;
 369         case 0x3a:
 370                 desc = "unit_characteristics";
 371                 break;
 372         case 0x3b:
 373                 desc = "command_set_revision";
 374                 break;
 375         case 0x3c:
 376                 desc = "firmware_revision";
 377                 break;
 378         case 0x3d:
 379                 desc = "reconnect_timeout";
 380                 break;
 381         case 0x54:
 382                 desc = "management_agent";
 383                 break;
 384         case 0x81:
 385                 desc = "text_leaf";
 386                 crom_parse_text(cc, buf + strlen(buf), len);
 387                 break;
 388         case 0xd1:
 389                 desc = "unit_directory";
 390                 break;
 391         case 0xd4:
 392                 desc = "logical_unit_directory";
 393                 break;
 394         default:
 395                 desc = "unknown";
 396         }
 397         return desc;
 398 }
 399 #endif
 400
 401 #if defined(_KERNEL) || defined(TEST)
 402
 403 int
 404 crom_add_quad(struct crom_chunk *chunk, u_int32_t entry)
 405 {
 406         int index;
 407
 408         index = chunk->data.crc_len;
 409         if (index >= CROM_MAX_CHUNK_LEN - 1) {
 410                 kprintf("too large chunk %d\n", index);
 411                 return(-1);
 412         }
 413         chunk->data.buf[index] = entry;
 414         chunk->data.crc_len++;
 415         return(index);
 416 }
 417
 418 int
 419 crom_add_entry(struct crom_chunk *chunk, int key, int val)
 420 {
 421         struct csrreg *reg;
 422         u_int32_t i;
 423
 424         reg = (struct csrreg *)&i;
 425         reg->key = key;
 426         reg->val = val;
 427         return(crom_add_quad(chunk, (u_int32_t) i));
 428 }
 429
 430 int
 431 crom_add_chunk(struct crom_src *src, struct crom_chunk *parent,
 432                                 struct crom_chunk *child, int key)
 433 {
 434         int index;
 435
 436         if (parent == NULL) {
 437                 STAILQ_INSERT_TAIL(&src->chunk_list, child, link);
 438                 return(0);
 439         }
 440
 441         index = crom_add_entry(parent, key, 0);
 442         if (index < 0) {
 443                 return(-1);
 444         }
 445         child->ref_chunk = parent;
 446         child->ref_index = index;
 447         STAILQ_INSERT_TAIL(&src->chunk_list, child, link);
 448         return(index);
 449 }
 450
 451 #define MAX_TEXT ((CROM_MAX_CHUNK_LEN + 1) * 4 - sizeof(struct csrtext))
 452 int
 453 crom_add_simple_text(struct crom_src *src, struct crom_chunk *parent,
 454                                 struct crom_chunk *chunk, char *buf)
 455 {
 456         struct csrtext *tl;
 457         u_int32_t *p;
 458         int len, i;
 459         char t[MAX_TEXT];
 460
 461         len = strlen(buf);
 462         if (len > MAX_TEXT) {
 463 #if defined(__DragonFly__) || __FreeBSD_version < 500000
 464                 kprintf("text(%d) truncated to %lu.\n", len, (u_long)MAX_TEXT);
 465 #else
 466                 kprintf("text(%d) truncated to %td.\n", len, MAX_TEXT);
 467 #endif
 468                 len = MAX_TEXT;
 469         }
 470
 471         tl = (struct csrtext *) &chunk->data;
 472         tl->crc_len = howmany(sizeof(struct csrtext) + len, sizeof(u_int32_t));
 473         tl->spec_id = 0;
 474         tl->spec_type = 0;
 475         tl->lang_id = 0;
 476         bzero(&t[0], roundup2(len, sizeof(u_int32_t)));
 477         bcopy(buf, &t[0], len);
 478         p = (u_int32_t *)&t[0];
 479         for (i = 0; i < howmany(len, sizeof(u_int32_t)); i ++)
 480                 tl->text[i] = ntohl(*p++);
 481         return (crom_add_chunk(src, parent, chunk, CROM_TEXTLEAF));
 482 }
 483
 484 static int
 485 crom_copy(u_int32_t *src, u_int32_t *dst, int *offset, int len, int maxlen)
 486 {
 487         if (*offset + len > maxlen) {
 488                 kprintf("Config. ROM is too large for the buffer\n");
 489                 return(-1);
 490         }
 491         bcopy(src, (char *)(dst + *offset), len * sizeof(u_int32_t));
 492         *offset += len;
 493         return(0);
 494 }
 495
 496 int
 497 crom_load(struct crom_src *src, u_int32_t *buf, int maxlen)
 498 {
 499         struct crom_chunk *chunk, *parent;
 500         struct csrhdr *hdr;
 501 #ifdef _KERNEL
 502         u_int32_t *ptr;
 503         int i;
 504 #endif
 505         int count, offset;
 506         int len;
 507
 508         offset = 0;
 509         /* Determine offset */
 510         STAILQ_FOREACH(chunk, &src->chunk_list, link) {
 511                 chunk->offset = offset;
 512                 /* Assume the offset of the parent is already known */
 513                 parent = chunk->ref_chunk;
 514                 if (parent != NULL) {
 515                         struct csrreg *reg;
 516                         reg = (struct csrreg *)
 517                                 &parent->data.buf[chunk->ref_index];
 518                         reg->val = offset -
 519                                 (parent->offset + 1 + chunk->ref_index);
 520                 }
 521                 offset += 1 + chunk->data.crc_len;
 522         }
 523
 524         /* Calculate CRC and dump to the buffer */
 525         len = 1 + src->hdr.info_len;
 526         count = 0;
 527         if (crom_copy((u_int32_t *)&src->hdr, buf, &count, len, maxlen) < 0)
 528                 return(-1);
 529         STAILQ_FOREACH(chunk, &src->chunk_list, link) {
 530                 chunk->data.crc =
 531                         crom_crc(&chunk->data.buf[0], chunk->data.crc_len);
 532
 533                 len = 1 + chunk->data.crc_len;
 534                 if (crom_copy((u_int32_t *)&chunk->data, buf,
 535                                         &count, len, maxlen) < 0)
 536                         return(-1);
 537         }
 538         hdr = (struct csrhdr *)buf;
 539         hdr->crc_len = count - 1;
 540         hdr->crc = crom_crc(&buf[1], hdr->crc_len);
 541
 542 #ifdef _KERNEL
 543         /* byte swap */
 544         ptr = buf;
 545         for (i = 0; i < count; i ++) {
 546                 *ptr = htonl(*ptr);
 547                 ptr++;
 548         }
 549 #endif
 550
 551         return(count);
 552 }
 553 #endif
 554
 555 #ifdef TEST
 556 int
 557 main(int argc, char *argv[])
 558 {
 559         struct crom_src src;
 560         struct crom_chunk root,unit1,unit2,unit3;
 561         struct crom_chunk text1,text2,text3,text4,text5,text6,text7;
 562         u_int32_t buf[256], *p;
 563         int i;
 564
 565         bzero(&src, sizeof(src));
 566         bzero(&root, sizeof(root));
 567         bzero(&unit1, sizeof(unit1));
 568         bzero(&unit2, sizeof(unit2));
 569         bzero(&unit3, sizeof(unit3));
 570         bzero(&text1, sizeof(text1));
 571         bzero(&text2, sizeof(text2));
 572         bzero(&text3, sizeof(text3));
 573         bzero(&text3, sizeof(text4));
 574         bzero(&text3, sizeof(text5));
 575         bzero(&text3, sizeof(text6));
 576         bzero(&text3, sizeof(text7));
 577         bzero(buf, sizeof(buf));
 578
 579         /* BUS info sample */
 580         src.hdr.info_len = 4;
 581         src.businfo.bus_name = CSR_BUS_NAME_IEEE1394;
 582         src.businfo.eui64.hi = 0x11223344;
 583         src.businfo.eui64.lo = 0x55667788;
 584         src.businfo.link_spd = FWSPD_S400;
 585         src.businfo.generation = 0;
 586         src.businfo.max_rom = MAXROM_4;
 587         src.businfo.max_rec = 10;
 588         src.businfo.cyc_clk_acc = 100;
 589         src.businfo.pmc = 0;
 590         src.businfo.bmc = 1;
 591         src.businfo.isc = 1;
 592         src.businfo.cmc = 1;
 593         src.businfo.irmc = 1;
 594         STAILQ_INIT(&src.chunk_list);
 595
 596         /* Root directory */
 597         crom_add_chunk(&src, NULL, &root, 0);
 598         crom_add_entry(&root, CSRKEY_NCAP, 0x123456);
 599         /* private company_id */
 600         crom_add_entry(&root, CSRKEY_VENDOR, 0xacde48);
 601
 602 #ifdef __DragonFly__
 603         crom_add_simple_text(&src, &root, &text1, "DragonFly");
 604         crom_add_entry(&root, CSRKEY_HW, __DragonFly_cc_version);
 605         crom_add_simple_text(&src, &root, &text2, "DragonFly-1");
 606 #else
 607         crom_add_simple_text(&src, &root, &text1, "FreeBSD");
 608         crom_add_entry(&root, CSRKEY_HW, __FreeBSD_version);
 609         crom_add_simple_text(&src, &root, &text2, "FreeBSD-5");
 610 #endif
 611
 612         /* SBP unit directory */
 613         crom_add_chunk(&src, &root, &unit1, CROM_UDIR);
 614         crom_add_entry(&unit1, CSRKEY_SPEC, CSRVAL_ANSIT10);
 615         crom_add_entry(&unit1, CSRKEY_VER, CSRVAL_T10SBP2);
 616         crom_add_entry(&unit1, CSRKEY_COM_SPEC, CSRVAL_ANSIT10);
 617         crom_add_entry(&unit1, CSRKEY_COM_SET, CSRVAL_SCSI);
 618         /* management_agent */
 619         crom_add_entry(&unit1, CROM_MGM, 0x1000);
 620         crom_add_entry(&unit1, CSRKEY_UNIT_CH, (10<<8) | 8);
 621         /* Device type and LUN */
 622         crom_add_entry(&unit1, CROM_LUN, 0);
 623         crom_add_entry(&unit1, CSRKEY_MODEL, 1);
 624         crom_add_simple_text(&src, &unit1, &text3, "scsi_target");
 625
 626         /* RFC2734 IPv4 over IEEE1394 */
 627         crom_add_chunk(&src, &root, &unit2, CROM_UDIR);
 628         crom_add_entry(&unit2, CSRKEY_SPEC, CSRVAL_IETF);
 629         crom_add_simple_text(&src, &unit2, &text4, "IANA");
 630         crom_add_entry(&unit2, CSRKEY_VER, 1);
 631         crom_add_simple_text(&src, &unit2, &text5, "IPv4");
 632
 633         /* RFC3146 IPv6 over IEEE1394 */
 634         crom_add_chunk(&src, &root, &unit3, CROM_UDIR);
 635         crom_add_entry(&unit3, CSRKEY_SPEC, CSRVAL_IETF);
 636         crom_add_simple_text(&src, &unit3, &text6, "IANA");
 637         crom_add_entry(&unit3, CSRKEY_VER, 2);
 638         crom_add_simple_text(&src, &unit3, &text7, "IPv6");
 639
 640         crom_load(&src, buf, 256);
 641         p = buf;
 642 #define DUMP_FORMAT     "%08x %08x %08x %08x %08x %08x %08x %08x\n"
 643         for (i = 0; i < 256/8; i ++) {
 644                 kprintf(DUMP_FORMAT,
 645                         p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
 646                 p += 8;
 647         }
 648         return(0);
 649 }
 650 #endif