1 /* 2 * Copyright 1996 Massachusetts Institute of Technology 3 * 4 * Permission to use, copy, modify, and distribute this software and 5 * its documentation for any purpose and without fee is hereby 6 * granted, provided that both the above copyright notice and this 7 * permission notice appear in all copies, that both the above 8 * copyright notice and this permission notice appear in all 9 * supporting documentation, and that the name of M.I.T. not be used 10 * in advertising or publicity pertaining to distribution of the 11 * software without specific, written prior permission. M.I.T. makes 12 * no representations about the suitability of this software for any 13 * purpose. It is provided "as is" without express or implied 14 * warranty. 15 * 16 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS 17 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, 18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT 20 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 23 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 26 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 static const char rcsid[] = 32 "$FreeBSD$"; 33 #endif /* not lint */ 34 35 #include <sys/types.h> 36 #include <sys/fcntl.h> 37 38 #include <ctype.h> 39 #include <err.h> 40 #include <stdlib.h> 41 #include <stdio.h> 42 #include <string.h> 43 #include <unistd.h> 44 #include <sys/pciio.h> 45 #include <sys/queue.h> 46 47 #include <dev/pci/pcireg.h> 48 49 #include "pathnames.h" 50 #include "pciconf.h" 51 52 struct pci_device_info 53 { 54 TAILQ_ENTRY(pci_device_info) link; 55 int id; 56 char *desc; 57 }; 58 59 struct pci_vendor_info 60 { 61 TAILQ_ENTRY(pci_vendor_info) link; 62 TAILQ_HEAD(,pci_device_info) devs; 63 int id; 64 char *desc; 65 }; 66 67 TAILQ_HEAD(,pci_vendor_info) pci_vendors; 68 69 static void list_devs(int verbose, int caps); 70 static void list_verbose(struct pci_conf *p); 71 static const char *guess_class(struct pci_conf *p); 72 static const char *guess_subclass(struct pci_conf *p); 73 static int load_vendors(void); 74 static void readit(const char *, const char *, int); 75 static void writeit(const char *, const char *, const char *, int); 76 static void chkattached(const char *, int); 77 78 static int exitstatus = 0; 79 80 static void 81 usage(void) 82 { 83 fprintf(stderr, "%s\n%s\n%s\n%s\n", 84 "usage: pciconf -l [-cv]", 85 " pciconf -a selector", 86 " pciconf -r [-b | -h] selector addr[:addr2]", 87 " pciconf -w [-b | -h] selector addr value"); 88 exit (1); 89 } 90 91 int 92 main(int argc, char **argv) 93 { 94 int c; 95 int listmode, readmode, writemode, attachedmode, caps, verbose; 96 int byte, isshort; 97 98 listmode = readmode = writemode = attachedmode = caps = verbose = byte = isshort = 0; 99 100 while ((c = getopt(argc, argv, "abchlrwv")) != -1) { 101 switch(c) { 102 case 'a': 103 attachedmode = 1; 104 break; 105 106 case 'b': 107 byte = 1; 108 break; 109 110 case 'c': 111 caps = 1; 112 break; 113 114 case 'h': 115 isshort = 1; 116 break; 117 118 case 'l': 119 listmode = 1; 120 break; 121 122 case 'r': 123 readmode = 1; 124 break; 125 126 case 'w': 127 writemode = 1; 128 break; 129 130 case 'v': 131 verbose = 1; 132 break; 133 134 default: 135 usage(); 136 } 137 } 138 139 if ((listmode && optind != argc) 140 || (writemode && optind + 3 != argc) 141 || (readmode && optind + 2 != argc) 142 || (attachedmode && optind + 1 != argc)) 143 usage(); 144 145 if (listmode) { 146 list_devs(verbose, caps); 147 } else if (attachedmode) { 148 chkattached(argv[optind], 149 byte ? 1 : isshort ? 2 : 4); 150 } else if (readmode) { 151 readit(argv[optind], argv[optind + 1], 152 byte ? 1 : isshort ? 2 : 4); 153 } else if (writemode) { 154 writeit(argv[optind], argv[optind + 1], argv[optind + 2], 155 byte ? 1 : isshort ? 2 : 4); 156 } else { 157 usage(); 158 } 159 160 return exitstatus; 161 } 162 163 static void 164 list_devs(int verbose, int caps) 165 { 166 int fd; 167 struct pci_conf_io pc; 168 struct pci_conf conf[255], *p; 169 int none_count = 0; 170 171 if (verbose) 172 load_vendors(); 173 174 fd = open(_PATH_DEVPCI, caps ? O_RDWR : O_RDONLY, 0); 175 if (fd < 0) 176 err(1, "%s", _PATH_DEVPCI); 177 178 bzero(&pc, sizeof(struct pci_conf_io)); 179 pc.match_buf_len = sizeof(conf); 180 pc.matches = conf; 181 182 do { 183 if (ioctl(fd, PCIOCGETCONF, &pc) == -1) 184 err(1, "ioctl(PCIOCGETCONF)"); 185 186 /* 187 * 255 entries should be more than enough for most people, 188 * but if someone has more devices, and then changes things 189 * around between ioctls, we'll do the cheezy thing and 190 * just bail. The alternative would be to go back to the 191 * beginning of the list, and print things twice, which may 192 * not be desireable. 193 */ 194 if (pc.status == PCI_GETCONF_LIST_CHANGED) { 195 warnx("PCI device list changed, please try again"); 196 exitstatus = 1; 197 close(fd); 198 return; 199 } else if (pc.status == PCI_GETCONF_ERROR) { 200 warnx("error returned from PCIOCGETCONF ioctl"); 201 exitstatus = 1; 202 close(fd); 203 return; 204 } 205 for (p = conf; p < &conf[pc.num_matches]; p++) { 206 printf("%s%d@pci%d:%d:%d:%d:\tclass=0x%06x card=0x%08x " 207 "chip=0x%08x rev=0x%02x hdr=0x%02x\n", 208 (p->pd_name && *p->pd_name) ? p->pd_name : 209 "none", 210 (p->pd_name && *p->pd_name) ? (int)p->pd_unit : 211 none_count++, p->pc_sel.pc_domain, 212 p->pc_sel.pc_bus, p->pc_sel.pc_dev, 213 p->pc_sel.pc_func, (p->pc_class << 16) | 214 (p->pc_subclass << 8) | p->pc_progif, 215 (p->pc_subdevice << 16) | p->pc_subvendor, 216 (p->pc_device << 16) | p->pc_vendor, 217 p->pc_revid, p->pc_hdr); 218 if (verbose) 219 list_verbose(p); 220 if (caps) 221 list_caps(fd, p); 222 } 223 } while (pc.status == PCI_GETCONF_MORE_DEVS); 224 225 close(fd); 226 } 227 228 static void 229 list_verbose(struct pci_conf *p) 230 { 231 struct pci_vendor_info *vi; 232 struct pci_device_info *di; 233 const char *dp; 234 235 TAILQ_FOREACH(vi, &pci_vendors, link) { 236 if (vi->id == p->pc_vendor) { 237 printf(" vendor = '%s'\n", vi->desc); 238 break; 239 } 240 } 241 if (vi == NULL) { 242 di = NULL; 243 } else { 244 TAILQ_FOREACH(di, &vi->devs, link) { 245 if (di->id == p->pc_device) { 246 printf(" device = '%s'\n", di->desc); 247 break; 248 } 249 } 250 } 251 if ((dp = guess_class(p)) != NULL) 252 printf(" class = %s\n", dp); 253 if ((dp = guess_subclass(p)) != NULL) 254 printf(" subclass = %s\n", dp); 255 } 256 257 /* 258 * This is a direct cut-and-paste from the table in sys/dev/pci/pci.c. 259 */ 260 static struct 261 { 262 int class; 263 int subclass; 264 const char *desc; 265 } pci_nomatch_tab[] = { 266 {PCIC_OLD, -1, "old"}, 267 {PCIC_OLD, PCIS_OLD_NONVGA, "non-VGA display device"}, 268 {PCIC_OLD, PCIS_OLD_VGA, "VGA-compatible display device"}, 269 {PCIC_STORAGE, -1, "mass storage"}, 270 {PCIC_STORAGE, PCIS_STORAGE_SCSI, "SCSI"}, 271 {PCIC_STORAGE, PCIS_STORAGE_IDE, "ATA"}, 272 {PCIC_STORAGE, PCIS_STORAGE_FLOPPY, "floppy disk"}, 273 {PCIC_STORAGE, PCIS_STORAGE_IPI, "IPI"}, 274 {PCIC_STORAGE, PCIS_STORAGE_RAID, "RAID"}, 275 {PCIC_NETWORK, -1, "network"}, 276 {PCIC_NETWORK, PCIS_NETWORK_ETHERNET, "ethernet"}, 277 {PCIC_NETWORK, PCIS_NETWORK_TOKENRING, "token ring"}, 278 {PCIC_NETWORK, PCIS_NETWORK_FDDI, "fddi"}, 279 {PCIC_NETWORK, PCIS_NETWORK_ATM, "ATM"}, 280 {PCIC_NETWORK, PCIS_NETWORK_ISDN, "ISDN"}, 281 {PCIC_DISPLAY, -1, "display"}, 282 {PCIC_DISPLAY, PCIS_DISPLAY_VGA, "VGA"}, 283 {PCIC_DISPLAY, PCIS_DISPLAY_XGA, "XGA"}, 284 {PCIC_DISPLAY, PCIS_DISPLAY_3D, "3D"}, 285 {PCIC_MULTIMEDIA, -1, "multimedia"}, 286 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_VIDEO, "video"}, 287 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_AUDIO, "audio"}, 288 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_TELE, "telephony"}, 289 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_HDA, "HDA"}, 290 {PCIC_MEMORY, -1, "memory"}, 291 {PCIC_MEMORY, PCIS_MEMORY_RAM, "RAM"}, 292 {PCIC_MEMORY, PCIS_MEMORY_FLASH, "flash"}, 293 {PCIC_BRIDGE, -1, "bridge"}, 294 {PCIC_BRIDGE, PCIS_BRIDGE_HOST, "HOST-PCI"}, 295 {PCIC_BRIDGE, PCIS_BRIDGE_ISA, "PCI-ISA"}, 296 {PCIC_BRIDGE, PCIS_BRIDGE_EISA, "PCI-EISA"}, 297 {PCIC_BRIDGE, PCIS_BRIDGE_MCA, "PCI-MCA"}, 298 {PCIC_BRIDGE, PCIS_BRIDGE_PCI, "PCI-PCI"}, 299 {PCIC_BRIDGE, PCIS_BRIDGE_PCMCIA, "PCI-PCMCIA"}, 300 {PCIC_BRIDGE, PCIS_BRIDGE_NUBUS, "PCI-NuBus"}, 301 {PCIC_BRIDGE, PCIS_BRIDGE_CARDBUS, "PCI-CardBus"}, 302 {PCIC_BRIDGE, PCIS_BRIDGE_RACEWAY, "PCI-RACEway"}, 303 {PCIC_SIMPLECOMM, -1, "simple comms"}, 304 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_UART, "UART"}, /* could detect 16550 */ 305 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_PAR, "parallel port"}, 306 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_MULSER, "multiport serial"}, 307 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_MODEM, "generic modem"}, 308 {PCIC_BASEPERIPH, -1, "base peripheral"}, 309 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_PIC, "interrupt controller"}, 310 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_DMA, "DMA controller"}, 311 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_TIMER, "timer"}, 312 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_RTC, "realtime clock"}, 313 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_PCIHOT, "PCI hot-plug controller"}, 314 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_SDHC, "SD host controller"}, 315 {PCIC_INPUTDEV, -1, "input device"}, 316 {PCIC_INPUTDEV, PCIS_INPUTDEV_KEYBOARD, "keyboard"}, 317 {PCIC_INPUTDEV, PCIS_INPUTDEV_DIGITIZER,"digitizer"}, 318 {PCIC_INPUTDEV, PCIS_INPUTDEV_MOUSE, "mouse"}, 319 {PCIC_INPUTDEV, PCIS_INPUTDEV_SCANNER, "scanner"}, 320 {PCIC_INPUTDEV, PCIS_INPUTDEV_GAMEPORT, "gameport"}, 321 {PCIC_DOCKING, -1, "docking station"}, 322 {PCIC_PROCESSOR, -1, "processor"}, 323 {PCIC_SERIALBUS, -1, "serial bus"}, 324 {PCIC_SERIALBUS, PCIS_SERIALBUS_FW, "FireWire"}, 325 {PCIC_SERIALBUS, PCIS_SERIALBUS_ACCESS, "AccessBus"}, 326 {PCIC_SERIALBUS, PCIS_SERIALBUS_SSA, "SSA"}, 327 {PCIC_SERIALBUS, PCIS_SERIALBUS_USB, "USB"}, 328 {PCIC_SERIALBUS, PCIS_SERIALBUS_FC, "Fibre Channel"}, 329 {PCIC_SERIALBUS, PCIS_SERIALBUS_SMBUS, "SMBus"}, 330 {PCIC_WIRELESS, -1, "wireless controller"}, 331 {PCIC_WIRELESS, PCIS_WIRELESS_IRDA, "iRDA"}, 332 {PCIC_WIRELESS, PCIS_WIRELESS_IR, "IR"}, 333 {PCIC_WIRELESS, PCIS_WIRELESS_RF, "RF"}, 334 {PCIC_INTELLIIO, -1, "intelligent I/O controller"}, 335 {PCIC_INTELLIIO, PCIS_INTELLIIO_I2O, "I2O"}, 336 {PCIC_SATCOM, -1, "satellite communication"}, 337 {PCIC_SATCOM, PCIS_SATCOM_TV, "sat TV"}, 338 {PCIC_SATCOM, PCIS_SATCOM_AUDIO, "sat audio"}, 339 {PCIC_SATCOM, PCIS_SATCOM_VOICE, "sat voice"}, 340 {PCIC_SATCOM, PCIS_SATCOM_DATA, "sat data"}, 341 {PCIC_CRYPTO, -1, "encrypt/decrypt"}, 342 {PCIC_CRYPTO, PCIS_CRYPTO_NETCOMP, "network/computer crypto"}, 343 {PCIC_CRYPTO, PCIS_CRYPTO_NETCOMP, "entertainment crypto"}, 344 {PCIC_DASP, -1, "dasp"}, 345 {PCIC_DASP, PCIS_DASP_DPIO, "DPIO module"}, 346 {0, 0, NULL} 347 }; 348 349 static const char * 350 guess_class(struct pci_conf *p) 351 { 352 int i; 353 354 for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) { 355 if (pci_nomatch_tab[i].class == p->pc_class) 356 return(pci_nomatch_tab[i].desc); 357 } 358 return(NULL); 359 } 360 361 static const char * 362 guess_subclass(struct pci_conf *p) 363 { 364 int i; 365 366 for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) { 367 if ((pci_nomatch_tab[i].class == p->pc_class) && 368 (pci_nomatch_tab[i].subclass == p->pc_subclass)) 369 return(pci_nomatch_tab[i].desc); 370 } 371 return(NULL); 372 } 373 374 static int 375 load_vendors(void) 376 { 377 const char *dbf; 378 FILE *db; 379 struct pci_vendor_info *cv; 380 struct pci_device_info *cd; 381 char buf[1024], str[1024]; 382 char *ch; 383 int id, error; 384 385 /* 386 * Locate the database and initialise. 387 */ 388 TAILQ_INIT(&pci_vendors); 389 if ((dbf = getenv("PCICONF_VENDOR_DATABASE")) == NULL) 390 dbf = _PATH_PCIVDB; 391 if ((db = fopen(dbf, "r")) == NULL) 392 return(1); 393 cv = NULL; 394 cd = NULL; 395 error = 0; 396 397 /* 398 * Scan input lines from the database 399 */ 400 for (;;) { 401 if (fgets(buf, sizeof(buf), db) == NULL) 402 break; 403 404 if ((ch = strchr(buf, '#')) != NULL) 405 *ch = '\0'; 406 ch = strchr(buf, '\0') - 1; 407 while (ch > buf && isspace(*ch)) 408 *ch-- = '\0'; 409 if (ch <= buf) 410 continue; 411 412 /* Can't handle subvendor / subdevice entries yet */ 413 if (buf[0] == '\t' && buf[1] == '\t') 414 continue; 415 416 /* Check for vendor entry */ 417 if (buf[0] != '\t' && sscanf(buf, "%04x %[^\n]", &id, str) == 2) { 418 if ((id == 0) || (strlen(str) < 1)) 419 continue; 420 if ((cv = malloc(sizeof(struct pci_vendor_info))) == NULL) { 421 warn("allocating vendor entry"); 422 error = 1; 423 break; 424 } 425 if ((cv->desc = strdup(str)) == NULL) { 426 free(cv); 427 warn("allocating vendor description"); 428 error = 1; 429 break; 430 } 431 cv->id = id; 432 TAILQ_INIT(&cv->devs); 433 TAILQ_INSERT_TAIL(&pci_vendors, cv, link); 434 continue; 435 } 436 437 /* Check for device entry */ 438 if (buf[0] == '\t' && sscanf(buf + 1, "%04x %[^\n]", &id, str) == 2) { 439 if ((id == 0) || (strlen(str) < 1)) 440 continue; 441 if (cv == NULL) { 442 warnx("device entry with no vendor!"); 443 continue; 444 } 445 if ((cd = malloc(sizeof(struct pci_device_info))) == NULL) { 446 warn("allocating device entry"); 447 error = 1; 448 break; 449 } 450 if ((cd->desc = strdup(str)) == NULL) { 451 free(cd); 452 warn("allocating device description"); 453 error = 1; 454 break; 455 } 456 cd->id = id; 457 TAILQ_INSERT_TAIL(&cv->devs, cd, link); 458 continue; 459 } 460 461 /* It's a comment or junk, ignore it */ 462 } 463 if (ferror(db)) 464 error = 1; 465 fclose(db); 466 467 return(error); 468 } 469 470 uint32_t 471 read_config(int fd, struct pcisel *sel, long reg, int width) 472 { 473 struct pci_io pi; 474 475 pi.pi_sel = *sel; 476 pi.pi_reg = reg; 477 pi.pi_width = width; 478 479 if (ioctl(fd, PCIOCREAD, &pi) < 0) 480 err(1, "ioctl(PCIOCREAD)"); 481 482 return (pi.pi_data); 483 } 484 485 static struct pcisel 486 getsel(const char *str) 487 { 488 char *ep = strchr(str, '@'); 489 char *epbase; 490 struct pcisel sel; 491 unsigned long selarr[4]; 492 int i; 493 494 if (ep == NULL) 495 ep = (char *)str; 496 else 497 ep++; 498 499 epbase = ep; 500 501 if (strncmp(ep, "pci", 3) == 0) { 502 ep += 3; 503 i = 0; 504 do { 505 selarr[i++] = strtoul(ep, &ep, 10); 506 } while ((*ep == ':' || *ep == '.') && *++ep != '\0' && i < 4); 507 508 if (i > 2) 509 sel.pc_func = selarr[--i]; 510 else 511 sel.pc_func = 0; 512 sel.pc_dev = selarr[--i]; 513 sel.pc_bus = selarr[--i]; 514 if (i > 0) 515 sel.pc_domain = selarr[--i]; 516 else 517 sel.pc_domain = 0; 518 } 519 if (*ep != '\x0' || ep == epbase) 520 errx(1, "cannot parse selector %s", str); 521 return sel; 522 } 523 524 static void 525 readone(int fd, struct pcisel *sel, long reg, int width) 526 { 527 528 printf("%0*x", width*2, read_config(fd, sel, reg, width)); 529 } 530 531 static void 532 readit(const char *name, const char *reg, int width) 533 { 534 long rstart; 535 long rend; 536 long r; 537 char *end; 538 int i; 539 int fd; 540 struct pcisel sel; 541 542 fd = open(_PATH_DEVPCI, O_RDWR, 0); 543 if (fd < 0) 544 err(1, "%s", _PATH_DEVPCI); 545 546 rend = rstart = strtol(reg, &end, 0); 547 if (end && *end == ':') { 548 end++; 549 rend = strtol(end, (char **) 0, 0); 550 } 551 sel = getsel(name); 552 for (i = 1, r = rstart; r <= rend; i++, r += width) { 553 readone(fd, &sel, r, width); 554 if (i && !(i % 8)) 555 putchar(' '); 556 putchar(i % (16/width) ? ' ' : '\n'); 557 } 558 if (i % (16/width) != 1) 559 putchar('\n'); 560 close(fd); 561 } 562 563 static void 564 writeit(const char *name, const char *reg, const char *data, int width) 565 { 566 int fd; 567 struct pci_io pi; 568 569 pi.pi_sel = getsel(name); 570 pi.pi_reg = strtoul(reg, (char **)0, 0); /* XXX error check */ 571 pi.pi_width = width; 572 pi.pi_data = strtoul(data, (char **)0, 0); /* XXX error check */ 573 574 fd = open(_PATH_DEVPCI, O_RDWR, 0); 575 if (fd < 0) 576 err(1, "%s", _PATH_DEVPCI); 577 578 if (ioctl(fd, PCIOCWRITE, &pi) < 0) 579 err(1, "ioctl(PCIOCWRITE)"); 580 } 581 582 static void 583 chkattached(const char *name, int width) 584 { 585 int fd; 586 struct pci_io pi; 587 588 pi.pi_sel = getsel(name); 589 pi.pi_reg = 0; 590 pi.pi_width = width; 591 pi.pi_data = 0; 592 593 fd = open(_PATH_DEVPCI, O_RDWR, 0); 594 if (fd < 0) 595 err(1, "%s", _PATH_DEVPCI); 596 597 if (ioctl(fd, PCIOCATTACHED, &pi) < 0) 598 err(1, "ioctl(PCIOCATTACHED)"); 599 600 exitstatus = pi.pi_data ? 0 : 2; /* exit(2), if NOT attached */ 601 printf("%s: %s%s\n", name, pi.pi_data == 0 ? "not " : "", "attached"); 602 } 603