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 <err.h> 39 #include <stdlib.h> 40 #include <stdio.h> 41 #include <string.h> 42 #include <unistd.h> 43 #include <sys/pciio.h> 44 #include <sys/queue.h> 45 46 #include <dev/pci/pcireg.h> 47 48 #include "pathnames.h" 49 50 struct pci_device_info 51 { 52 TAILQ_ENTRY(pci_device_info) link; 53 int id; 54 char *desc; 55 }; 56 57 struct pci_vendor_info 58 { 59 TAILQ_ENTRY(pci_vendor_info) link; 60 TAILQ_HEAD(,pci_device_info) devs; 61 int id; 62 char *desc; 63 }; 64 65 TAILQ_HEAD(,pci_vendor_info) pci_vendors; 66 67 static void list_devs(int vendors); 68 static void list_verbose(struct pci_conf *p); 69 static char *guess_class(struct pci_conf *p); 70 static char *guess_subclass(struct pci_conf *p); 71 static int load_vendors(void); 72 static void readit(const char *, const char *, int); 73 static void writeit(const char *, const char *, const char *, int); 74 static void chkattached(const char *, int); 75 76 static int exitstatus = 0; 77 78 static void 79 usage() 80 { 81 fprintf(stderr, "%s\n%s\n%s\n%s\n", 82 "usage: pciconf -l [-v]", 83 " pciconf -a selector", 84 " pciconf -r [-b | -h] selector addr[:addr2]", 85 " pciconf -w [-b | -h] selector addr value"); 86 exit (1); 87 } 88 89 int 90 main(int argc, char **argv) 91 { 92 int c; 93 int listmode, readmode, writemode, attachedmode, verbose; 94 int byte, isshort; 95 96 listmode = readmode = writemode = attachedmode = verbose = byte = isshort = 0; 97 98 while ((c = getopt(argc, argv, "alrwbhv")) != -1) { 99 switch(c) { 100 case 'a': 101 attachedmode = 1; 102 break; 103 104 case 'l': 105 listmode = 1; 106 break; 107 108 case 'r': 109 readmode = 1; 110 break; 111 112 case 'w': 113 writemode = 1; 114 break; 115 116 case 'b': 117 byte = 1; 118 break; 119 120 case 'h': 121 isshort = 1; 122 break; 123 124 case 'v': 125 verbose = 1; 126 break; 127 128 default: 129 usage(); 130 } 131 } 132 133 if ((listmode && optind != argc) 134 || (writemode && optind + 3 != argc) 135 || (readmode && optind + 2 != argc) 136 || (attachedmode && optind + 1 != argc)) 137 usage(); 138 139 if (listmode) { 140 list_devs(verbose); 141 } else if (attachedmode) { 142 chkattached(argv[optind], 143 byte ? 1 : isshort ? 2 : 4); 144 } else if (readmode) { 145 readit(argv[optind], argv[optind + 1], 146 byte ? 1 : isshort ? 2 : 4); 147 } else if (writemode) { 148 writeit(argv[optind], argv[optind + 1], argv[optind + 2], 149 byte ? 1 : isshort ? 2 : 4); 150 } else { 151 usage(); 152 } 153 154 return exitstatus; 155 } 156 157 static void 158 list_devs(int verbose) 159 { 160 int fd; 161 struct pci_conf_io pc; 162 struct pci_conf conf[255], *p; 163 int none_count = 0; 164 165 if (verbose) 166 load_vendors(); 167 168 fd = open(_PATH_DEVPCI, O_RDWR, 0); 169 if (fd < 0) 170 err(1, "%s", _PATH_DEVPCI); 171 172 bzero(&pc, sizeof(struct pci_conf_io)); 173 pc.match_buf_len = sizeof(conf); 174 pc.matches = conf; 175 176 do { 177 if (ioctl(fd, PCIOCGETCONF, &pc) == -1) 178 err(1, "ioctl(PCIOCGETCONF)"); 179 180 /* 181 * 255 entries should be more than enough for most people, 182 * but if someone has more devices, and then changes things 183 * around between ioctls, we'll do the cheezy thing and 184 * just bail. The alternative would be to go back to the 185 * beginning of the list, and print things twice, which may 186 * not be desireable. 187 */ 188 if (pc.status == PCI_GETCONF_LIST_CHANGED) { 189 warnx("PCI device list changed, please try again"); 190 exitstatus = 1; 191 close(fd); 192 return; 193 } else if (pc.status == PCI_GETCONF_ERROR) { 194 warnx("error returned from PCIOCGETCONF ioctl"); 195 exitstatus = 1; 196 close(fd); 197 return; 198 } 199 for (p = conf; p < &conf[pc.num_matches]; p++) { 200 201 printf("%s%d@pci%d:%d:%d:\tclass=0x%06x card=0x%08x " 202 "chip=0x%08x rev=0x%02x hdr=0x%02x\n", 203 (p->pd_name && *p->pd_name) ? p->pd_name : 204 "none", 205 (p->pd_name && *p->pd_name) ? (int)p->pd_unit : 206 none_count++, 207 p->pc_sel.pc_bus, p->pc_sel.pc_dev, 208 p->pc_sel.pc_func, (p->pc_class << 16) | 209 (p->pc_subclass << 8) | p->pc_progif, 210 (p->pc_subdevice << 16) | p->pc_subvendor, 211 (p->pc_device << 16) | p->pc_vendor, 212 p->pc_revid, p->pc_hdr); 213 if (verbose) 214 list_verbose(p); 215 } 216 } while (pc.status == PCI_GETCONF_MORE_DEVS); 217 218 close(fd); 219 } 220 221 static void 222 list_verbose(struct pci_conf *p) 223 { 224 struct pci_vendor_info *vi; 225 struct pci_device_info *di; 226 char *dp; 227 228 TAILQ_FOREACH(vi, &pci_vendors, link) { 229 if (vi->id == p->pc_vendor) { 230 printf(" vendor = '%s'\n", vi->desc); 231 break; 232 } 233 } 234 if (vi == NULL) { 235 di = NULL; 236 } else { 237 TAILQ_FOREACH(di, &vi->devs, link) { 238 if (di->id == p->pc_device) { 239 printf(" device = '%s'\n", di->desc); 240 break; 241 } 242 } 243 } 244 if ((dp = guess_class(p)) != NULL) 245 printf(" class = %s\n", dp); 246 if ((dp = guess_subclass(p)) != NULL) 247 printf(" subclass = %s\n", dp); 248 } 249 250 /* 251 * This is a direct cut-and-paste from the table in sys/dev/pci/pci.c. 252 */ 253 static struct 254 { 255 int class; 256 int subclass; 257 char *desc; 258 } pci_nomatch_tab[] = { 259 {PCIC_OLD, -1, "old"}, 260 {PCIC_OLD, PCIS_OLD_NONVGA, "non-VGA display device"}, 261 {PCIC_OLD, PCIS_OLD_VGA, "VGA-compatible display device"}, 262 {PCIC_STORAGE, -1, "mass storage"}, 263 {PCIC_STORAGE, PCIS_STORAGE_SCSI, "SCSI"}, 264 {PCIC_STORAGE, PCIS_STORAGE_IDE, "ATA"}, 265 {PCIC_STORAGE, PCIS_STORAGE_FLOPPY, "floppy disk"}, 266 {PCIC_STORAGE, PCIS_STORAGE_IPI, "IPI"}, 267 {PCIC_STORAGE, PCIS_STORAGE_RAID, "RAID"}, 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_DISPLAY, -1, "display"}, 274 {PCIC_DISPLAY, PCIS_DISPLAY_VGA, "VGA"}, 275 {PCIC_DISPLAY, PCIS_DISPLAY_XGA, "XGA"}, 276 {PCIC_MULTIMEDIA, -1, "multimedia"}, 277 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_VIDEO, "video"}, 278 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_AUDIO, "audio"}, 279 {PCIC_MEMORY, -1, "memory"}, 280 {PCIC_MEMORY, PCIS_MEMORY_RAM, "RAM"}, 281 {PCIC_MEMORY, PCIS_MEMORY_FLASH, "flash"}, 282 {PCIC_BRIDGE, -1, "bridge"}, 283 {PCIC_BRIDGE, PCIS_BRIDGE_HOST, "HOST-PCI"}, 284 {PCIC_BRIDGE, PCIS_BRIDGE_ISA, "PCI-ISA"}, 285 {PCIC_BRIDGE, PCIS_BRIDGE_EISA, "PCI-EISA"}, 286 {PCIC_BRIDGE, PCIS_BRIDGE_MCA, "PCI-MCA"}, 287 {PCIC_BRIDGE, PCIS_BRIDGE_PCI, "PCI-PCI"}, 288 {PCIC_BRIDGE, PCIS_BRIDGE_PCMCIA, "PCI-PCMCIA"}, 289 {PCIC_BRIDGE, PCIS_BRIDGE_NUBUS, "PCI-NuBus"}, 290 {PCIC_BRIDGE, PCIS_BRIDGE_CARDBUS, "PCI-CardBus"}, 291 {PCIC_BRIDGE, PCIS_BRIDGE_OTHER, "PCI-unknown"}, 292 {PCIC_SIMPLECOMM, -1, "simple comms"}, 293 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_UART, "UART"}, /* could detect 16550 */ 294 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_PAR, "parallel port"}, 295 {PCIC_BASEPERIPH, -1, "base peripheral"}, 296 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_PIC, "interrupt controller"}, 297 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_DMA, "DMA controller"}, 298 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_TIMER, "timer"}, 299 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_RTC, "realtime clock"}, 300 {PCIC_INPUTDEV, -1, "input device"}, 301 {PCIC_INPUTDEV, PCIS_INPUTDEV_KEYBOARD, "keyboard"}, 302 {PCIC_INPUTDEV, PCIS_INPUTDEV_DIGITIZER,"digitizer"}, 303 {PCIC_INPUTDEV, PCIS_INPUTDEV_MOUSE, "mouse"}, 304 {PCIC_DOCKING, -1, "docking station"}, 305 {PCIC_PROCESSOR, -1, "processor"}, 306 {PCIC_SERIALBUS, -1, "serial bus"}, 307 {PCIC_SERIALBUS, PCIS_SERIALBUS_FW, "FireWire"}, 308 {PCIC_SERIALBUS, PCIS_SERIALBUS_ACCESS, "AccessBus"}, 309 {PCIC_SERIALBUS, PCIS_SERIALBUS_SSA, "SSA"}, 310 {PCIC_SERIALBUS, PCIS_SERIALBUS_USB, "USB"}, 311 {PCIC_SERIALBUS, PCIS_SERIALBUS_FC, "Fibre Channel"}, 312 {PCIC_SERIALBUS, PCIS_SERIALBUS_SMBUS, "SMBus"}, 313 {0, 0, NULL} 314 }; 315 316 static char * 317 guess_class(struct pci_conf *p) 318 { 319 int i; 320 321 for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) { 322 if (pci_nomatch_tab[i].class == p->pc_class) 323 return(pci_nomatch_tab[i].desc); 324 } 325 return(NULL); 326 } 327 328 static char * 329 guess_subclass(struct pci_conf *p) 330 { 331 int i; 332 333 for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) { 334 if ((pci_nomatch_tab[i].class == p->pc_class) && 335 (pci_nomatch_tab[i].subclass == p->pc_subclass)) 336 return(pci_nomatch_tab[i].desc); 337 } 338 return(NULL); 339 } 340 341 static int 342 load_vendors(void) 343 { 344 char *dbf; 345 FILE *db; 346 struct pci_vendor_info *cv; 347 struct pci_device_info *cd; 348 char buf[100], str[100]; 349 int id, error; 350 351 /* 352 * Locate the database and initialise. 353 */ 354 TAILQ_INIT(&pci_vendors); 355 if ((dbf = getenv("PCICONF_VENDOR_DATABASE")) == NULL) 356 dbf = _PATH_PCIVDB; 357 if ((db = fopen(dbf, "r")) == NULL) 358 return(1); 359 cv = NULL; 360 cd = NULL; 361 error = 0; 362 363 /* 364 * Scan input lines from the database 365 */ 366 for (;;) { 367 if (fgets(buf, sizeof(buf), db) == NULL) 368 break; 369 370 /* Check for vendor entry */ 371 if ((buf[0] != '\t') && (sscanf(buf, "%04x\t%[^\n]", &id, str) == 2)) { 372 if ((id == 0) || (strlen(str) < 1)) 373 continue; 374 if ((cv = malloc(sizeof(struct pci_vendor_info))) == NULL) { 375 warn("allocating vendor entry"); 376 error = 1; 377 break; 378 } 379 if ((cv->desc = strdup(str)) == NULL) { 380 free(cv); 381 warn("allocating vendor description"); 382 error = 1; 383 break; 384 } 385 cv->id = id; 386 TAILQ_INIT(&cv->devs); 387 TAILQ_INSERT_TAIL(&pci_vendors, cv, link); 388 continue; 389 } 390 391 /* Check for device entry */ 392 if ((buf[0] == '\t') && (sscanf(buf + 1, "%04x\t%[^\n]", &id, str) == 2)) { 393 if ((id == 0) || (strlen(str) < 1)) 394 continue; 395 if (cv == NULL) { 396 warnx("device entry with no vendor!"); 397 continue; 398 } 399 if ((cd = malloc(sizeof(struct pci_device_info))) == NULL) { 400 warn("allocating device entry"); 401 error = 1; 402 break; 403 } 404 if ((cd->desc = strdup(str)) == NULL) { 405 free(cd); 406 warn("allocating device description"); 407 error = 1; 408 break; 409 } 410 cd->id = id; 411 TAILQ_INSERT_TAIL(&cv->devs, cd, link); 412 continue; 413 } 414 415 /* It's a comment or junk, ignore it */ 416 } 417 if (ferror(db)) 418 error = 1; 419 fclose(db); 420 421 return(error); 422 } 423 424 425 static struct pcisel 426 getsel(const char *str) 427 { 428 char *ep = strchr(str, '@'); 429 char *epbase; 430 struct pcisel sel; 431 432 if (ep == NULL) 433 ep = (char *)str; 434 else 435 ep++; 436 437 epbase = ep; 438 439 if (strncmp(ep, "pci", 3) == 0) { 440 ep += 3; 441 sel.pc_bus = strtoul(ep, &ep, 0); 442 if (!ep || *ep++ != ':') 443 errx(1, "cannot parse selector %s", str); 444 sel.pc_dev = strtoul(ep, &ep, 0); 445 if (!ep || *ep != ':') { 446 sel.pc_func = 0; 447 } else { 448 ep++; 449 sel.pc_func = strtoul(ep, &ep, 0); 450 } 451 if (*ep == ':') 452 ep++; 453 } 454 if (*ep != '\x0' || ep == epbase) 455 errx(1, "cannot parse selector %s", str); 456 return sel; 457 } 458 459 static void 460 readone(int fd, struct pcisel *sel, long reg, int width) 461 { 462 struct pci_io pi; 463 464 pi.pi_sel = *sel; 465 pi.pi_reg = reg; 466 pi.pi_width = width; 467 468 if (ioctl(fd, PCIOCREAD, &pi) < 0) 469 err(1, "ioctl(PCIOCREAD)"); 470 471 printf("%0*x", width*2, pi.pi_data); 472 } 473 474 static void 475 readit(const char *name, const char *reg, int width) 476 { 477 long rstart; 478 long rend; 479 long r; 480 char *end; 481 int i; 482 int fd; 483 struct pcisel sel; 484 485 fd = open(_PATH_DEVPCI, O_RDWR, 0); 486 if (fd < 0) 487 err(1, "%s", _PATH_DEVPCI); 488 489 rend = rstart = strtol(reg, &end, 0); 490 if (end && *end == ':') { 491 end++; 492 rend = strtol(end, (char **) 0, 0); 493 } 494 sel = getsel(name); 495 for (i = 1, r = rstart; r <= rend; i++, r += width) { 496 readone(fd, &sel, r, width); 497 if (i && !(i % 8)) putchar(' '); 498 putchar(i % (16/width) ? ' ' : '\n'); 499 } 500 if (i % (16/width) != 1) 501 putchar('\n'); 502 close(fd); 503 } 504 505 static void 506 writeit(const char *name, const char *reg, const char *data, int width) 507 { 508 int fd; 509 struct pci_io pi; 510 511 pi.pi_sel = getsel(name); 512 pi.pi_reg = strtoul(reg, (char **)0, 0); /* XXX error check */ 513 pi.pi_width = width; 514 pi.pi_data = strtoul(data, (char **)0, 0); /* XXX error check */ 515 516 fd = open(_PATH_DEVPCI, O_RDWR, 0); 517 if (fd < 0) 518 err(1, "%s", _PATH_DEVPCI); 519 520 if (ioctl(fd, PCIOCWRITE, &pi) < 0) 521 err(1, "ioctl(PCIOCWRITE)"); 522 } 523 524 static void 525 chkattached (const char *name, int width) 526 { 527 int fd; 528 struct pci_io pi; 529 530 pi.pi_sel = getsel(name); 531 pi.pi_reg = 0; 532 pi.pi_width = width; 533 pi.pi_data = 0; 534 535 fd = open(_PATH_DEVPCI, O_RDWR, 0); 536 if (fd < 0) 537 err(1, "%s", _PATH_DEVPCI); 538 539 if (ioctl(fd, PCIOCATTACHED, &pi) < 0) 540 err(1, "ioctl(PCIOCATTACHED)"); 541 542 exitstatus = pi.pi_data ? 0 : 2; /* exit(2), if NOT attached */ 543 printf("%s: %s%s\n", name, pi.pi_data == 0 ? "not " : "", "attached"); 544 } 545