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 * $FreeBSD: src/usr.sbin/pciconf/pciconf.c,v 1.11.2.3 2002/09/17 22:09:15 jdp Exp $ 30 * $DragonFly: src/usr.sbin/pciconf/pciconf.c,v 1.6 2005/01/01 22:06:25 cpressey Exp $ 31 */ 32 33 #include <sys/types.h> 34 #include <sys/fcntl.h> 35 36 #include <err.h> 37 #include <stdlib.h> 38 #include <stdio.h> 39 #include <string.h> 40 #include <unistd.h> 41 #include <sys/pciio.h> 42 #include <sys/queue.h> 43 44 #include <bus/pci/pcireg.h> 45 46 #include "pathnames.h" 47 48 struct pci_device_info 49 { 50 TAILQ_ENTRY(pci_device_info) link; 51 int id; 52 char *desc; 53 }; 54 55 struct pci_vendor_info 56 { 57 TAILQ_ENTRY(pci_vendor_info) link; 58 TAILQ_HEAD(,pci_device_info) devs; 59 int id; 60 char *desc; 61 }; 62 63 TAILQ_HEAD(,pci_vendor_info) pci_vendors; 64 65 static void list_devs(int vendors); 66 static void list_verbose(struct pci_conf *p); 67 static const char *guess_class(struct pci_conf *p); 68 static const char *guess_subclass(struct pci_conf *p); 69 static int load_vendors(void); 70 static void readit(const char *, const char *, int); 71 static void writeit(const char *, const char *, const char *, int); 72 static void chkattached(const char *, int); 73 74 static int exitstatus = 0; 75 76 static void 77 usage(void) 78 { 79 fprintf(stderr, "%s\n%s\n%s\n%s\n", 80 "usage: pciconf -l [-v]", 81 " pciconf -a selector", 82 " pciconf -r [-b | -h] selector addr[:addr2]", 83 " pciconf -w [-b | -h] selector addr value"); 84 exit (1); 85 } 86 87 int 88 main(int argc, char **argv) 89 { 90 int c; 91 int listmode, readmode, writemode, attachedmode, verbose; 92 int byte, isshort; 93 94 listmode = readmode = writemode = attachedmode = verbose = byte = isshort = 0; 95 96 while ((c = getopt(argc, argv, "alrwbhv")) != -1) { 97 switch(c) { 98 case 'a': 99 attachedmode = 1; 100 break; 101 102 case 'l': 103 listmode = 1; 104 break; 105 106 case 'r': 107 readmode = 1; 108 break; 109 110 case 'w': 111 writemode = 1; 112 break; 113 114 case 'b': 115 byte = 1; 116 break; 117 118 case 'h': 119 isshort = 1; 120 break; 121 122 case 'v': 123 verbose = 1; 124 break; 125 126 default: 127 usage(); 128 } 129 } 130 131 if ((listmode && optind != argc) 132 || (writemode && optind + 3 != argc) 133 || (readmode && optind + 2 != argc) 134 || (attachedmode && optind + 1 != argc)) 135 usage(); 136 137 if (listmode) { 138 list_devs(verbose); 139 } else if(attachedmode) { 140 chkattached(argv[optind], 141 byte ? 1 : isshort ? 2 : 4); 142 } else if(readmode) { 143 readit(argv[optind], argv[optind + 1], 144 byte ? 1 : isshort ? 2 : 4); 145 } else if(writemode) { 146 writeit(argv[optind], argv[optind + 1], argv[optind + 2], 147 byte ? 1 : isshort ? 2 : 4); 148 } else { 149 usage(); 150 } 151 152 return exitstatus; 153 } 154 155 static void 156 list_devs(int verbose) 157 { 158 int fd; 159 struct pci_conf_io pc; 160 struct pci_conf conf[255], *p; 161 int none_count = 0; 162 163 if (verbose) 164 load_vendors(); 165 166 fd = open(_PATH_DEVPCI, O_RDWR, 0); 167 if (fd < 0) 168 err(1, "%s", _PATH_DEVPCI); 169 170 bzero(&pc, sizeof(struct pci_conf_io)); 171 pc.match_buf_len = sizeof(conf); 172 pc.matches = conf; 173 174 do { 175 if (ioctl(fd, PCIOCGETCONF, &pc) == -1) 176 err(1, "ioctl(PCIOCGETCONF)"); 177 178 /* 179 * 255 entries should be more than enough for most people, 180 * but if someone has more devices, and then changes things 181 * around between ioctls, we'll do the cheezy thing and 182 * just bail. The alternative would be to go back to the 183 * beginning of the list, and print things twice, which may 184 * not be desireable. 185 */ 186 if (pc.status == PCI_GETCONF_LIST_CHANGED) { 187 warnx("PCI device list changed, please try again"); 188 exitstatus = 1; 189 close(fd); 190 return; 191 } else if (pc.status == PCI_GETCONF_ERROR) { 192 warnx("error returned from PCIOCGETCONF ioctl"); 193 exitstatus = 1; 194 close(fd); 195 return; 196 } 197 for (p = conf; p < &conf[pc.num_matches]; p++) { 198 199 printf("%s%d@pci%d:%d:%d:\tclass=0x%06x card=0x%08x " 200 "chip=0x%08x rev=0x%02x hdr=0x%02x\n", 201 (p->pd_name && *p->pd_name) ? p->pd_name : 202 "none", 203 (p->pd_name && *p->pd_name) ? (int)p->pd_unit : 204 none_count++, 205 p->pc_sel.pc_bus, p->pc_sel.pc_dev, 206 p->pc_sel.pc_func, (p->pc_class << 16) | 207 (p->pc_subclass << 8) | p->pc_progif, 208 (p->pc_subdevice << 16) | p->pc_subvendor, 209 (p->pc_device << 16) | p->pc_vendor, 210 p->pc_revid, p->pc_hdr); 211 if (verbose) 212 list_verbose(p); 213 } 214 } while (pc.status == PCI_GETCONF_MORE_DEVS); 215 216 close(fd); 217 } 218 219 static void 220 list_verbose(struct pci_conf *p) 221 { 222 struct pci_vendor_info *vi; 223 struct pci_device_info *di; 224 const char *dp; 225 226 TAILQ_FOREACH(vi, &pci_vendors, link) { 227 if (vi->id == p->pc_vendor) { 228 printf(" vendor = '%s'\n", vi->desc); 229 break; 230 } 231 } 232 if (vi == NULL) { 233 di = NULL; 234 } else { 235 TAILQ_FOREACH(di, &vi->devs, link) { 236 if (di->id == p->pc_device) { 237 printf(" device = '%s'\n", di->desc); 238 break; 239 } 240 } 241 } 242 if ((dp = guess_class(p)) != NULL) 243 printf(" class = %s\n", dp); 244 if ((dp = guess_subclass(p)) != NULL) 245 printf(" subclass = %s\n", dp); 246 } 247 248 /* 249 * This is a direct cut-and-paste from the table in sys/bus/pci/pcireg.h. 250 */ 251 static struct 252 { 253 int class; 254 int subclass; 255 const char *desc; 256 } pci_nomatch_tab[] = { 257 {PCIC_OLD, -1, "old"}, 258 {PCIC_OLD, PCIS_OLD_NONVGA, "non-VGA display device"}, 259 {PCIC_OLD, PCIS_OLD_VGA, "VGA-compatible display device"}, 260 {PCIC_STORAGE, -1, "mass storage"}, 261 {PCIC_STORAGE, PCIS_STORAGE_SCSI, "SCSI"}, 262 {PCIC_STORAGE, PCIS_STORAGE_IDE, "ATA"}, 263 {PCIC_STORAGE, PCIS_STORAGE_FLOPPY, "floppy disk"}, 264 {PCIC_STORAGE, PCIS_STORAGE_IPI, "IPI"}, 265 {PCIC_STORAGE, PCIS_STORAGE_RAID, "RAID"}, 266 {PCIC_STORAGE, PCIS_STORAGE_ATA, "ATA"}, 267 {PCIC_STORAGE, PCIS_STORAGE_SATA, "SATA"}, 268 {PCIC_NETWORK, -1, "network"}, 269 {PCIC_NETWORK, PCIS_NETWORK_ETHERNET, "ethernet"}, 270 {PCIC_NETWORK, PCIS_NETWORK_TOKENRING, "token ring"}, 271 {PCIC_NETWORK, PCIS_NETWORK_FDDI, "fddi"}, 272 {PCIC_NETWORK, PCIS_NETWORK_ATM, "ATM"}, 273 {PCIC_NETWORK, PCIS_NETWORK_ISDN, "ISDN"}, 274 {PCIC_DISPLAY, -1, "display"}, 275 {PCIC_DISPLAY, PCIS_DISPLAY_VGA, "VGA"}, 276 {PCIC_DISPLAY, PCIS_DISPLAY_XGA, "XGA"}, 277 {PCIC_DISPLAY, PCIS_DISPLAY_3D, "3D"}, 278 {PCIC_MULTIMEDIA, -1, "multimedia"}, 279 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_VIDEO, "video"}, 280 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_AUDIO, "audio"}, 281 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_TEL, "telephony"}, 282 {PCIC_MEMORY, -1, "memory"}, 283 {PCIC_MEMORY, PCIS_MEMORY_RAM, "RAM"}, 284 {PCIC_MEMORY, PCIS_MEMORY_FLASH, "flash"}, 285 {PCIC_BRIDGE, -1, "bridge"}, 286 {PCIC_BRIDGE, PCIS_BRIDGE_HOST, "HOST-PCI"}, 287 {PCIC_BRIDGE, PCIS_BRIDGE_ISA, "PCI-ISA"}, 288 {PCIC_BRIDGE, PCIS_BRIDGE_EISA, "PCI-EISA"}, 289 {PCIC_BRIDGE, PCIS_BRIDGE_MCA, "PCI-MCA"}, 290 {PCIC_BRIDGE, PCIS_BRIDGE_PCI, "PCI-PCI"}, 291 {PCIC_BRIDGE, PCIS_BRIDGE_PCMCIA, "PCI-PCMCIA"}, 292 {PCIC_BRIDGE, PCIS_BRIDGE_NUBUS, "PCI-NuBus"}, 293 {PCIC_BRIDGE, PCIS_BRIDGE_CARDBUS, "PCI-CardBus"}, 294 {PCIC_BRIDGE, PCIS_BRIDGE_INFINI, "PCI-InfiniBand"}, 295 {PCIC_BRIDGE, PCIS_BRIDGE_OTHER, "PCI-unknown"}, 296 {PCIC_SIMPLECOMM, -1, "simple comms"}, 297 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_UART, "UART"}, /* could detect 16550 */ 298 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_PAR, "parallel port"}, 299 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_MULTSER,"multiport serial"}, 300 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_MODEM, "generic modem"}, 301 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_SMART, "smartcard"}, 302 {PCIC_BASEPERIPH, -1, "base peripheral"}, 303 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_PIC, "interrupt controller"}, 304 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_DMA, "DMA controller"}, 305 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_TIMER, "timer"}, 306 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_RTC, "realtime clock"}, 307 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_HOTPLUG,"PCI Hotplug"}, 308 {PCIC_INPUTDEV, -1, "input device"}, 309 {PCIC_INPUTDEV, PCIS_INPUTDEV_KEYBOARD, "keyboard"}, 310 {PCIC_INPUTDEV, PCIS_INPUTDEV_DIGITIZER,"digitizer"}, 311 {PCIC_INPUTDEV, PCIS_INPUTDEV_MOUSE, "mouse"}, 312 {PCIC_INPUTDEV, PCIS_INPUTDEV_SCANNER, "scanner"}, 313 {PCIC_INPUTDEV, PCIS_INPUTDEV_GAMEPORT, "gameport"}, 314 {PCIC_DOCKING, -1, "docking station"}, 315 {PCIC_PROCESSOR, -1, "processor"}, 316 {PCIC_SERIALBUS, -1, "serial bus"}, 317 {PCIC_SERIALBUS, PCIS_SERIALBUS_FW, "FireWire"}, 318 {PCIC_SERIALBUS, PCIS_SERIALBUS_ACCESS, "AccessBus"}, 319 {PCIC_SERIALBUS, PCIS_SERIALBUS_SSA, "SSA"}, 320 {PCIC_SERIALBUS, PCIS_SERIALBUS_USB, "USB"}, 321 {PCIC_SERIALBUS, PCIS_SERIALBUS_FC, "Fibre Channel"}, 322 {PCIC_SERIALBUS, PCIS_SERIALBUS_SMBUS, "SMBus"}, 323 {PCIC_SERIALBUS, PCIS_SERIALBUS_INFINI, "InfiniBand"}, 324 {PCIC_WIRELESS, -1, "wireless"}, 325 {PCIC_WIRELESS, PCIS_WIRELESS_IRDA, "iRDA"}, 326 {PCIC_WIRELESS, PCIS_WIRELESS_IR, "consumer IR"}, 327 {PCIC_WIRELESS, PCIS_WIRELESS_RF, "RF controller"}, 328 {PCIC_WIRELESS, PCIS_WIRELESS_BLUETOOTH,"Bluetooth"}, 329 {PCIC_WIRELESS, PCIS_WIRELESS_BROADBAND,"broadband"}, 330 {PCIC_WIRELESS, PCIS_WIRELESS_80211A, "Ethernet (802.11a)"}, 331 {PCIC_WIRELESS, PCIS_WIRELESS_80211B, "Ethernet (802.11b)"}, 332 {PCIC_I2O, -1, "I2O"}, 333 {PCIC_I2O, PCIS_I2O_10, "I2O 1.0"}, 334 {PCIC_SATELLITE, -1, "satellite"}, 335 {PCIC_CRYPTO, -1, "crypto controller"}, 336 {PCIC_SIGPROC, -1, "signal processing"}, 337 {0, 0, NULL} 338 }; 339 340 static const char * 341 guess_class(struct pci_conf *p) 342 { 343 int i; 344 345 for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) { 346 if (pci_nomatch_tab[i].class == p->pc_class) 347 return(pci_nomatch_tab[i].desc); 348 } 349 return(NULL); 350 } 351 352 static const char * 353 guess_subclass(struct pci_conf *p) 354 { 355 int i; 356 357 for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) { 358 if ((pci_nomatch_tab[i].class == p->pc_class) && 359 (pci_nomatch_tab[i].subclass == p->pc_subclass)) 360 return(pci_nomatch_tab[i].desc); 361 } 362 return(NULL); 363 } 364 365 static int 366 load_vendors(void) 367 { 368 const char *dbf; 369 FILE *db; 370 struct pci_vendor_info *cv; 371 struct pci_device_info *cd; 372 char buf[100], str[100]; 373 int id, error; 374 375 /* 376 * Locate the database and initialise. 377 */ 378 TAILQ_INIT(&pci_vendors); 379 if ((dbf = getenv("PCICONF_VENDOR_DATABASE")) == NULL) 380 dbf = _PATH_PCIVDB; 381 if ((db = fopen(dbf, "r")) == NULL) 382 return(1); 383 cv = NULL; 384 cd = NULL; 385 error = 0; 386 387 /* 388 * Scan input lines from the database 389 */ 390 for (;;) { 391 if (fgets(buf, sizeof(buf), db) == NULL) 392 break; 393 394 /* Check for vendor entry */ 395 if ((buf[0] != '\t') && (sscanf(buf, "%04x\t%[^\n]", &id, str) == 2)) { 396 if ((id == 0) || (strlen(str) < 1)) 397 continue; 398 if ((cv = malloc(sizeof(struct pci_vendor_info))) == NULL) { 399 warn("allocating vendor entry"); 400 error = 1; 401 break; 402 } 403 if ((cv->desc = strdup(str)) == NULL) { 404 free(cv); 405 warn("allocating vendor description"); 406 error = 1; 407 break; 408 } 409 cv->id = id; 410 TAILQ_INIT(&cv->devs); 411 TAILQ_INSERT_TAIL(&pci_vendors, cv, link); 412 continue; 413 } 414 415 /* Check for device entry */ 416 if ((buf[0] == '\t') && (sscanf(buf + 1, "%04x\t%[^\n]", &id, str) == 2)) { 417 if ((id == 0) || (strlen(str) < 1)) 418 continue; 419 if (cv == NULL) { 420 warnx("device entry with no vendor!"); 421 continue; 422 } 423 if ((cd = malloc(sizeof(struct pci_device_info))) == NULL) { 424 warn("allocating device entry"); 425 error = 1; 426 break; 427 } 428 if ((cd->desc = strdup(str)) == NULL) { 429 free(cd); 430 warn("allocating device description"); 431 error = 1; 432 break; 433 } 434 cd->id = id; 435 TAILQ_INSERT_TAIL(&cv->devs, cd, link); 436 continue; 437 } 438 439 /* It's a comment or junk, ignore it */ 440 } 441 if (ferror(db)) 442 error = 1; 443 fclose(db); 444 445 return(error); 446 } 447 448 449 static struct pcisel 450 getsel(const char *str) 451 { 452 char *parse_buf, *ep; 453 struct pcisel sel; 454 455 parse_buf = strdup(str); 456 ep = parse_buf; 457 458 if (strncmp(ep, "pci", 3) == 0) { 459 ep += 3; 460 sel.pc_bus = strtoul(ep, &ep, 0); 461 if (!ep || *ep++ != ':') 462 errx(1, "cannot parse selector %s", str); 463 sel.pc_dev = strtoul(ep, &ep, 0); 464 if (!ep || *ep != ':') { 465 sel.pc_func = 0; 466 } else { 467 ep++; 468 sel.pc_func = strtoul(ep, &ep, 0); 469 } 470 } 471 if (*ep == ':') 472 ep++; 473 if (*ep || ep == parse_buf) 474 errx(1, "cannot parse selector %s", str); 475 free(parse_buf); 476 477 return sel; 478 } 479 480 static void 481 readone(int fd, struct pcisel *sel, long reg, int width) 482 { 483 struct pci_io pi; 484 485 pi.pi_sel = *sel; 486 pi.pi_reg = reg; 487 pi.pi_width = width; 488 489 if (ioctl(fd, PCIOCREAD, &pi) < 0) 490 err(1, "ioctl(PCIOCREAD)"); 491 492 printf("0x%08x", pi.pi_data); 493 } 494 495 static void 496 readit(const char *name, const char *reg, int width) 497 { 498 long rstart; 499 long rend; 500 long r; 501 char *end; 502 int i; 503 int fd; 504 struct pcisel sel; 505 506 fd = open(_PATH_DEVPCI, O_RDWR, 0); 507 if (fd < 0) 508 err(1, "%s", _PATH_DEVPCI); 509 510 rend = rstart = strtol(reg, &end, 0); 511 if (end && *end == ':') { 512 end++; 513 rend = strtol(end, (char **) 0, 0); 514 } 515 sel = getsel(name); 516 for (i = 1, r = rstart; r <= rend; i++, r += width) { 517 readone(fd, &sel, r, width); 518 putchar(i % 4 ? ' ' : '\n'); 519 } 520 if (i % 4 != 1) 521 putchar('\n'); 522 close(fd); 523 } 524 525 static void 526 writeit(const char *name, const char *reg, const char *data, int width) 527 { 528 int fd; 529 struct pci_io pi; 530 531 pi.pi_sel = getsel(name); 532 pi.pi_reg = strtoul(reg, (char **)0, 0); /* XXX error check */ 533 pi.pi_width = width; 534 pi.pi_data = strtoul(data, (char **)0, 0); /* XXX error check */ 535 536 fd = open(_PATH_DEVPCI, O_RDWR, 0); 537 if (fd < 0) 538 err(1, "%s", _PATH_DEVPCI); 539 540 if (ioctl(fd, PCIOCWRITE, &pi) < 0) 541 err(1, "ioctl(PCIOCWRITE)"); 542 } 543 544 static void 545 chkattached (const char *name, int width) 546 { 547 int fd; 548 struct pci_io pi; 549 550 pi.pi_sel = getsel(name); 551 pi.pi_reg = 0; 552 pi.pi_width = width; 553 pi.pi_data = 0; 554 555 fd = open(_PATH_DEVPCI, O_RDWR, 0); 556 if (fd < 0) 557 err(1, "%s", _PATH_DEVPCI); 558 559 if (ioctl(fd, PCIOCATTACHED, &pi) < 0) 560 err(1, "ioctl(PCIOCATTACHED)"); 561 562 exitstatus = pi.pi_data ? 0 : 2; /* exit(2), if NOT attached */ 563 printf("%s: %s%s\n", name, pi.pi_data == 0 ? "not " : "", "attached"); 564 } 565