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, "aclrwbhv")) != -1) { 101 switch(c) { 102 case 'a': 103 attachedmode = 1; 104 break; 105 106 case 'c': 107 caps = 1; 108 break; 109 110 case 'l': 111 listmode = 1; 112 break; 113 114 case 'r': 115 readmode = 1; 116 break; 117 118 case 'w': 119 writemode = 1; 120 break; 121 122 case 'b': 123 byte = 1; 124 break; 125 126 case 'h': 127 isshort = 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++) { 206 207 printf("%s%d@pci%d:%d:%d:\tclass=0x%06x card=0x%08x " 208 "chip=0x%08x rev=0x%02x hdr=0x%02x\n", 209 (p->pd_name && *p->pd_name) ? p->pd_name : 210 "none", 211 (p->pd_name && *p->pd_name) ? (int)p->pd_unit : 212 none_count++, 213 p->pc_sel.pc_bus, p->pc_sel.pc_dev, 214 p->pc_sel.pc_func, (p->pc_class << 16) | 215 (p->pc_subclass << 8) | p->pc_progif, 216 (p->pc_subdevice << 16) | p->pc_subvendor, 217 (p->pc_device << 16) | p->pc_vendor, 218 p->pc_revid, p->pc_hdr); 219 if (verbose) 220 list_verbose(p); 221 if (caps) 222 list_caps(fd, p); 223 } 224 } while (pc.status == PCI_GETCONF_MORE_DEVS); 225 226 close(fd); 227 } 228 229 static void 230 list_verbose(struct pci_conf *p) 231 { 232 struct pci_vendor_info *vi; 233 struct pci_device_info *di; 234 const char *dp; 235 236 TAILQ_FOREACH(vi, &pci_vendors, link) { 237 if (vi->id == p->pc_vendor) { 238 printf(" vendor = '%s'\n", vi->desc); 239 break; 240 } 241 } 242 if (vi == NULL) { 243 di = NULL; 244 } else { 245 TAILQ_FOREACH(di, &vi->devs, link) { 246 if (di->id == p->pc_device) { 247 printf(" device = '%s'\n", di->desc); 248 break; 249 } 250 } 251 } 252 if ((dp = guess_class(p)) != NULL) 253 printf(" class = %s\n", dp); 254 if ((dp = guess_subclass(p)) != NULL) 255 printf(" subclass = %s\n", dp); 256 } 257 258 /* 259 * This is a direct cut-and-paste from the table in sys/dev/pci/pci.c. 260 */ 261 static struct 262 { 263 int class; 264 int subclass; 265 const char *desc; 266 } pci_nomatch_tab[] = { 267 {PCIC_OLD, -1, "old"}, 268 {PCIC_OLD, PCIS_OLD_NONVGA, "non-VGA display device"}, 269 {PCIC_OLD, PCIS_OLD_VGA, "VGA-compatible display device"}, 270 {PCIC_STORAGE, -1, "mass storage"}, 271 {PCIC_STORAGE, PCIS_STORAGE_SCSI, "SCSI"}, 272 {PCIC_STORAGE, PCIS_STORAGE_IDE, "ATA"}, 273 {PCIC_STORAGE, PCIS_STORAGE_FLOPPY, "floppy disk"}, 274 {PCIC_STORAGE, PCIS_STORAGE_IPI, "IPI"}, 275 {PCIC_STORAGE, PCIS_STORAGE_RAID, "RAID"}, 276 {PCIC_NETWORK, -1, "network"}, 277 {PCIC_NETWORK, PCIS_NETWORK_ETHERNET, "ethernet"}, 278 {PCIC_NETWORK, PCIS_NETWORK_TOKENRING, "token ring"}, 279 {PCIC_NETWORK, PCIS_NETWORK_FDDI, "fddi"}, 280 {PCIC_NETWORK, PCIS_NETWORK_ATM, "ATM"}, 281 {PCIC_NETWORK, PCIS_NETWORK_ISDN, "ISDN"}, 282 {PCIC_DISPLAY, -1, "display"}, 283 {PCIC_DISPLAY, PCIS_DISPLAY_VGA, "VGA"}, 284 {PCIC_DISPLAY, PCIS_DISPLAY_XGA, "XGA"}, 285 {PCIC_DISPLAY, PCIS_DISPLAY_3D, "3D"}, 286 {PCIC_MULTIMEDIA, -1, "multimedia"}, 287 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_VIDEO, "video"}, 288 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_AUDIO, "audio"}, 289 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_TELE, "telephony"}, 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_INPUTDEV, -1, "input device"}, 315 {PCIC_INPUTDEV, PCIS_INPUTDEV_KEYBOARD, "keyboard"}, 316 {PCIC_INPUTDEV, PCIS_INPUTDEV_DIGITIZER,"digitizer"}, 317 {PCIC_INPUTDEV, PCIS_INPUTDEV_MOUSE, "mouse"}, 318 {PCIC_INPUTDEV, PCIS_INPUTDEV_SCANNER, "scanner"}, 319 {PCIC_INPUTDEV, PCIS_INPUTDEV_GAMEPORT, "gameport"}, 320 {PCIC_DOCKING, -1, "docking station"}, 321 {PCIC_PROCESSOR, -1, "processor"}, 322 {PCIC_SERIALBUS, -1, "serial bus"}, 323 {PCIC_SERIALBUS, PCIS_SERIALBUS_FW, "FireWire"}, 324 {PCIC_SERIALBUS, PCIS_SERIALBUS_ACCESS, "AccessBus"}, 325 {PCIC_SERIALBUS, PCIS_SERIALBUS_SSA, "SSA"}, 326 {PCIC_SERIALBUS, PCIS_SERIALBUS_USB, "USB"}, 327 {PCIC_SERIALBUS, PCIS_SERIALBUS_FC, "Fibre Channel"}, 328 {PCIC_SERIALBUS, PCIS_SERIALBUS_SMBUS, "SMBus"}, 329 {PCIC_WIRELESS, -1, "wireless controller"}, 330 {PCIC_WIRELESS, PCIS_WIRELESS_IRDA, "iRDA"}, 331 {PCIC_WIRELESS, PCIS_WIRELESS_IR, "IR"}, 332 {PCIC_WIRELESS, PCIS_WIRELESS_RF, "RF"}, 333 {PCIC_INTELLIIO, -1, "intelligent I/O controller"}, 334 {PCIC_INTELLIIO, PCIS_INTELLIIO_I2O, "I2O"}, 335 {PCIC_SATCOM, -1, "satellite communication"}, 336 {PCIC_SATCOM, PCIS_SATCOM_TV, "sat TV"}, 337 {PCIC_SATCOM, PCIS_SATCOM_AUDIO, "sat audio"}, 338 {PCIC_SATCOM, PCIS_SATCOM_VOICE, "sat voice"}, 339 {PCIC_SATCOM, PCIS_SATCOM_DATA, "sat data"}, 340 {PCIC_CRYPTO, -1, "encrypt/decrypt"}, 341 {PCIC_CRYPTO, PCIS_CRYPTO_NETCOMP, "network/computer crypto"}, 342 {PCIC_CRYPTO, PCIS_CRYPTO_NETCOMP, "entertainment crypto"}, 343 {PCIC_DASP, -1, "dasp"}, 344 {PCIC_DASP, PCIS_DASP_DPIO, "DPIO module"}, 345 {0, 0, NULL} 346 }; 347 348 static const char * 349 guess_class(struct pci_conf *p) 350 { 351 int i; 352 353 for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) { 354 if (pci_nomatch_tab[i].class == p->pc_class) 355 return(pci_nomatch_tab[i].desc); 356 } 357 return(NULL); 358 } 359 360 static const char * 361 guess_subclass(struct pci_conf *p) 362 { 363 int i; 364 365 for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) { 366 if ((pci_nomatch_tab[i].class == p->pc_class) && 367 (pci_nomatch_tab[i].subclass == p->pc_subclass)) 368 return(pci_nomatch_tab[i].desc); 369 } 370 return(NULL); 371 } 372 373 static int 374 load_vendors(void) 375 { 376 const char *dbf; 377 FILE *db; 378 struct pci_vendor_info *cv; 379 struct pci_device_info *cd; 380 char buf[1024], str[1024]; 381 char *ch; 382 int id, error; 383 384 /* 385 * Locate the database and initialise. 386 */ 387 TAILQ_INIT(&pci_vendors); 388 if ((dbf = getenv("PCICONF_VENDOR_DATABASE")) == NULL) 389 dbf = _PATH_PCIVDB; 390 if ((db = fopen(dbf, "r")) == NULL) 391 return(1); 392 cv = NULL; 393 cd = NULL; 394 error = 0; 395 396 /* 397 * Scan input lines from the database 398 */ 399 for (;;) { 400 if (fgets(buf, sizeof(buf), db) == NULL) 401 break; 402 403 if ((ch = strchr(buf, '#')) != NULL) 404 *ch = '\0'; 405 ch = strchr(buf, '\0') - 1; 406 while (ch > buf && isspace(*ch)) 407 *ch-- = '\0'; 408 if (ch <= buf) 409 continue; 410 411 /* Can't handle subvendor / subdevice entries yet */ 412 if (buf[0] == '\t' && buf[1] == '\t') 413 continue; 414 415 /* Check for vendor entry */ 416 if (buf[0] != '\t' && sscanf(buf, "%04x %[^\n]", &id, str) == 2) { 417 if ((id == 0) || (strlen(str) < 1)) 418 continue; 419 if ((cv = malloc(sizeof(struct pci_vendor_info))) == NULL) { 420 warn("allocating vendor entry"); 421 error = 1; 422 break; 423 } 424 if ((cv->desc = strdup(str)) == NULL) { 425 free(cv); 426 warn("allocating vendor description"); 427 error = 1; 428 break; 429 } 430 cv->id = id; 431 TAILQ_INIT(&cv->devs); 432 TAILQ_INSERT_TAIL(&pci_vendors, cv, link); 433 continue; 434 } 435 436 /* Check for device entry */ 437 if (buf[0] == '\t' && sscanf(buf + 1, "%04x %[^\n]", &id, str) == 2) { 438 if ((id == 0) || (strlen(str) < 1)) 439 continue; 440 if (cv == NULL) { 441 warnx("device entry with no vendor!"); 442 continue; 443 } 444 if ((cd = malloc(sizeof(struct pci_device_info))) == NULL) { 445 warn("allocating device entry"); 446 error = 1; 447 break; 448 } 449 if ((cd->desc = strdup(str)) == NULL) { 450 free(cd); 451 warn("allocating device description"); 452 error = 1; 453 break; 454 } 455 cd->id = id; 456 TAILQ_INSERT_TAIL(&cv->devs, cd, link); 457 continue; 458 } 459 460 /* It's a comment or junk, ignore it */ 461 } 462 if (ferror(db)) 463 error = 1; 464 fclose(db); 465 466 return(error); 467 } 468 469 uint32_t 470 read_config(int fd, struct pcisel *sel, long reg, int width) 471 { 472 struct pci_io pi; 473 474 pi.pi_sel = *sel; 475 pi.pi_reg = reg; 476 pi.pi_width = width; 477 478 if (ioctl(fd, PCIOCREAD, &pi) < 0) 479 err(1, "ioctl(PCIOCREAD)"); 480 481 return (pi.pi_data); 482 } 483 484 static struct pcisel 485 getsel(const char *str) 486 { 487 char *ep = strchr(str, '@'); 488 char *epbase; 489 struct pcisel sel; 490 491 if (ep == NULL) 492 ep = (char *)str; 493 else 494 ep++; 495 496 epbase = ep; 497 498 if (strncmp(ep, "pci", 3) == 0) { 499 ep += 3; 500 sel.pc_bus = strtoul(ep, &ep, 0); 501 if (!ep || *ep++ != ':') 502 errx(1, "cannot parse selector %s", str); 503 sel.pc_dev = strtoul(ep, &ep, 0); 504 if (!ep || *ep != ':') { 505 sel.pc_func = 0; 506 } else { 507 ep++; 508 sel.pc_func = strtoul(ep, &ep, 0); 509 } 510 if (*ep == ':') 511 ep++; 512 } 513 if (*ep != '\x0' || ep == epbase) 514 errx(1, "cannot parse selector %s", str); 515 return sel; 516 } 517 518 static void 519 readone(int fd, struct pcisel *sel, long reg, int width) 520 { 521 522 printf("%0*x", width*2, read_config(fd, sel, reg, width)); 523 } 524 525 static void 526 readit(const char *name, const char *reg, int width) 527 { 528 long rstart; 529 long rend; 530 long r; 531 char *end; 532 int i; 533 int fd; 534 struct pcisel sel; 535 536 fd = open(_PATH_DEVPCI, O_RDWR, 0); 537 if (fd < 0) 538 err(1, "%s", _PATH_DEVPCI); 539 540 rend = rstart = strtol(reg, &end, 0); 541 if (end && *end == ':') { 542 end++; 543 rend = strtol(end, (char **) 0, 0); 544 } 545 sel = getsel(name); 546 for (i = 1, r = rstart; r <= rend; i++, r += width) { 547 readone(fd, &sel, r, width); 548 if (i && !(i % 8)) putchar(' '); 549 putchar(i % (16/width) ? ' ' : '\n'); 550 } 551 if (i % (16/width) != 1) 552 putchar('\n'); 553 close(fd); 554 } 555 556 static void 557 writeit(const char *name, const char *reg, const char *data, int width) 558 { 559 int fd; 560 struct pci_io pi; 561 562 pi.pi_sel = getsel(name); 563 pi.pi_reg = strtoul(reg, (char **)0, 0); /* XXX error check */ 564 pi.pi_width = width; 565 pi.pi_data = strtoul(data, (char **)0, 0); /* XXX error check */ 566 567 fd = open(_PATH_DEVPCI, O_RDWR, 0); 568 if (fd < 0) 569 err(1, "%s", _PATH_DEVPCI); 570 571 if (ioctl(fd, PCIOCWRITE, &pi) < 0) 572 err(1, "ioctl(PCIOCWRITE)"); 573 } 574 575 static void 576 chkattached(const char *name, int width) 577 { 578 int fd; 579 struct pci_io pi; 580 581 pi.pi_sel = getsel(name); 582 pi.pi_reg = 0; 583 pi.pi_width = width; 584 pi.pi_data = 0; 585 586 fd = open(_PATH_DEVPCI, O_RDWR, 0); 587 if (fd < 0) 588 err(1, "%s", _PATH_DEVPCI); 589 590 if (ioctl(fd, PCIOCATTACHED, &pi) < 0) 591 err(1, "ioctl(PCIOCATTACHED)"); 592 593 exitstatus = pi.pi_data ? 0 : 2; /* exit(2), if NOT attached */ 594 printf("%s: %s%s\n", name, pi.pi_data == 0 ? "not " : "", "attached"); 595 } 596