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