pciconf.c revision 261250
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 31static const char rcsid[] = 32 "$FreeBSD: stable/10/usr.sbin/pciconf/pciconf.c 261250 2014-01-28 21:56:18Z jhb $"; 33#endif /* not lint */ 34 35#include <sys/types.h> 36#include <sys/fcntl.h> 37 38#include <assert.h> 39#include <ctype.h> 40#include <err.h> 41#include <inttypes.h> 42#include <stdlib.h> 43#include <stdio.h> 44#include <string.h> 45#include <unistd.h> 46#include <sys/pciio.h> 47#include <sys/queue.h> 48 49#include <dev/pci/pcireg.h> 50 51#include "pathnames.h" 52#include "pciconf.h" 53 54struct pci_device_info 55{ 56 TAILQ_ENTRY(pci_device_info) link; 57 int id; 58 char *desc; 59}; 60 61struct pci_vendor_info 62{ 63 TAILQ_ENTRY(pci_vendor_info) link; 64 TAILQ_HEAD(,pci_device_info) devs; 65 int id; 66 char *desc; 67}; 68 69TAILQ_HEAD(,pci_vendor_info) pci_vendors; 70 71static struct pcisel getsel(const char *str); 72static void list_bars(int fd, struct pci_conf *p); 73static void list_devs(const char *name, int verbose, int bars, int caps, 74 int errors); 75static void list_verbose(struct pci_conf *p); 76static const char *guess_class(struct pci_conf *p); 77static const char *guess_subclass(struct pci_conf *p); 78static int load_vendors(void); 79static void readit(const char *, const char *, int); 80static void writeit(const char *, const char *, const char *, int); 81static void chkattached(const char *); 82 83static int exitstatus = 0; 84 85static void 86usage(void) 87{ 88 fprintf(stderr, "%s\n%s\n%s\n%s\n", 89 "usage: pciconf -l [-bcev] [device]", 90 " pciconf -a device", 91 " pciconf -r [-b | -h] device addr[:addr2]", 92 " pciconf -w [-b | -h] device addr value"); 93 exit (1); 94} 95 96int 97main(int argc, char **argv) 98{ 99 int c; 100 int listmode, readmode, writemode, attachedmode; 101 int bars, caps, errors, verbose; 102 int byte, isshort; 103 104 listmode = readmode = writemode = attachedmode = 0; 105 bars = caps = errors = verbose = byte = isshort = 0; 106 107 while ((c = getopt(argc, argv, "abcehlrwv")) != -1) { 108 switch(c) { 109 case 'a': 110 attachedmode = 1; 111 break; 112 113 case 'b': 114 bars = 1; 115 byte = 1; 116 break; 117 118 case 'c': 119 caps = 1; 120 break; 121 122 case 'e': 123 errors = 1; 124 break; 125 126 case 'h': 127 isshort = 1; 128 break; 129 130 case 'l': 131 listmode = 1; 132 break; 133 134 case 'r': 135 readmode = 1; 136 break; 137 138 case 'w': 139 writemode = 1; 140 break; 141 142 case 'v': 143 verbose = 1; 144 break; 145 146 default: 147 usage(); 148 } 149 } 150 151 if ((listmode && optind >= argc + 1) 152 || (writemode && optind + 3 != argc) 153 || (readmode && optind + 2 != argc) 154 || (attachedmode && optind + 1 != argc)) 155 usage(); 156 157 if (listmode) { 158 list_devs(optind + 1 == argc ? argv[optind] : NULL, verbose, 159 bars, caps, errors); 160 } else if (attachedmode) { 161 chkattached(argv[optind]); 162 } else if (readmode) { 163 readit(argv[optind], argv[optind + 1], 164 byte ? 1 : isshort ? 2 : 4); 165 } else if (writemode) { 166 writeit(argv[optind], argv[optind + 1], argv[optind + 2], 167 byte ? 1 : isshort ? 2 : 4); 168 } else { 169 usage(); 170 } 171 172 return exitstatus; 173} 174 175static void 176list_devs(const char *name, int verbose, int bars, int caps, int errors) 177{ 178 int fd; 179 struct pci_conf_io pc; 180 struct pci_conf conf[255], *p; 181 struct pci_match_conf patterns[1]; 182 int none_count = 0; 183 184 if (verbose) 185 load_vendors(); 186 187 fd = open(_PATH_DEVPCI, (caps || errors) ? O_RDWR : O_RDONLY, 0); 188 if (fd < 0) 189 err(1, "%s", _PATH_DEVPCI); 190 191 bzero(&pc, sizeof(struct pci_conf_io)); 192 pc.match_buf_len = sizeof(conf); 193 pc.matches = conf; 194 if (name != NULL) { 195 bzero(&patterns, sizeof(patterns)); 196 patterns[0].pc_sel = getsel(name); 197 patterns[0].flags = PCI_GETCONF_MATCH_DOMAIN | 198 PCI_GETCONF_MATCH_BUS | PCI_GETCONF_MATCH_DEV | 199 PCI_GETCONF_MATCH_FUNC; 200 pc.num_patterns = 1; 201 pc.pat_buf_len = sizeof(patterns); 202 pc.patterns = patterns; 203 } 204 205 do { 206 if (ioctl(fd, PCIOCGETCONF, &pc) == -1) 207 err(1, "ioctl(PCIOCGETCONF)"); 208 209 /* 210 * 255 entries should be more than enough for most people, 211 * but if someone has more devices, and then changes things 212 * around between ioctls, we'll do the cheesy thing and 213 * just bail. The alternative would be to go back to the 214 * beginning of the list, and print things twice, which may 215 * not be desirable. 216 */ 217 if (pc.status == PCI_GETCONF_LIST_CHANGED) { 218 warnx("PCI device list changed, please try again"); 219 exitstatus = 1; 220 close(fd); 221 return; 222 } else if (pc.status == PCI_GETCONF_ERROR) { 223 warnx("error returned from PCIOCGETCONF ioctl"); 224 exitstatus = 1; 225 close(fd); 226 return; 227 } 228 for (p = conf; p < &conf[pc.num_matches]; p++) { 229 printf("%s%d@pci%d:%d:%d:%d:\tclass=0x%06x card=0x%08x " 230 "chip=0x%08x rev=0x%02x hdr=0x%02x\n", 231 (p->pd_name && *p->pd_name) ? p->pd_name : 232 "none", 233 (p->pd_name && *p->pd_name) ? (int)p->pd_unit : 234 none_count++, p->pc_sel.pc_domain, 235 p->pc_sel.pc_bus, p->pc_sel.pc_dev, 236 p->pc_sel.pc_func, (p->pc_class << 16) | 237 (p->pc_subclass << 8) | p->pc_progif, 238 (p->pc_subdevice << 16) | p->pc_subvendor, 239 (p->pc_device << 16) | p->pc_vendor, 240 p->pc_revid, p->pc_hdr); 241 if (verbose) 242 list_verbose(p); 243 if (bars) 244 list_bars(fd, p); 245 if (caps) 246 list_caps(fd, p); 247 if (errors) 248 list_errors(fd, p); 249 } 250 } while (pc.status == PCI_GETCONF_MORE_DEVS); 251 252 close(fd); 253} 254 255static void 256list_bars(int fd, struct pci_conf *p) 257{ 258 struct pci_bar_io bar; 259 uint64_t base; 260 const char *type; 261 int i, range, max; 262 263 switch (p->pc_hdr & PCIM_HDRTYPE) { 264 case PCIM_HDRTYPE_NORMAL: 265 max = PCIR_MAX_BAR_0; 266 break; 267 case PCIM_HDRTYPE_BRIDGE: 268 max = PCIR_MAX_BAR_1; 269 break; 270 case PCIM_HDRTYPE_CARDBUS: 271 max = PCIR_MAX_BAR_2; 272 break; 273 default: 274 return; 275 } 276 277 for (i = 0; i <= max; i++) { 278 bar.pbi_sel = p->pc_sel; 279 bar.pbi_reg = PCIR_BAR(i); 280 if (ioctl(fd, PCIOCGETBAR, &bar) < 0) 281 continue; 282 if (PCI_BAR_IO(bar.pbi_base)) { 283 type = "I/O Port"; 284 range = 32; 285 base = bar.pbi_base & PCIM_BAR_IO_BASE; 286 } else { 287 if (bar.pbi_base & PCIM_BAR_MEM_PREFETCH) 288 type = "Prefetchable Memory"; 289 else 290 type = "Memory"; 291 switch (bar.pbi_base & PCIM_BAR_MEM_TYPE) { 292 case PCIM_BAR_MEM_32: 293 range = 32; 294 break; 295 case PCIM_BAR_MEM_1MB: 296 range = 20; 297 break; 298 case PCIM_BAR_MEM_64: 299 range = 64; 300 break; 301 default: 302 range = -1; 303 } 304 base = bar.pbi_base & ~((uint64_t)0xf); 305 } 306 printf(" bar [%02x] = type %s, range %2d, base %#jx, ", 307 PCIR_BAR(i), type, range, (uintmax_t)base); 308 printf("size %ju, %s\n", (uintmax_t)bar.pbi_length, 309 bar.pbi_enabled ? "enabled" : "disabled"); 310 } 311} 312 313static void 314list_verbose(struct pci_conf *p) 315{ 316 struct pci_vendor_info *vi; 317 struct pci_device_info *di; 318 const char *dp; 319 320 TAILQ_FOREACH(vi, &pci_vendors, link) { 321 if (vi->id == p->pc_vendor) { 322 printf(" vendor = '%s'\n", vi->desc); 323 break; 324 } 325 } 326 if (vi == NULL) { 327 di = NULL; 328 } else { 329 TAILQ_FOREACH(di, &vi->devs, link) { 330 if (di->id == p->pc_device) { 331 printf(" device = '%s'\n", di->desc); 332 break; 333 } 334 } 335 } 336 if ((dp = guess_class(p)) != NULL) 337 printf(" class = %s\n", dp); 338 if ((dp = guess_subclass(p)) != NULL) 339 printf(" subclass = %s\n", dp); 340} 341 342/* 343 * This is a direct cut-and-paste from the table in sys/dev/pci/pci.c. 344 */ 345static struct 346{ 347 int class; 348 int subclass; 349 const char *desc; 350} pci_nomatch_tab[] = { 351 {PCIC_OLD, -1, "old"}, 352 {PCIC_OLD, PCIS_OLD_NONVGA, "non-VGA display device"}, 353 {PCIC_OLD, PCIS_OLD_VGA, "VGA-compatible display device"}, 354 {PCIC_STORAGE, -1, "mass storage"}, 355 {PCIC_STORAGE, PCIS_STORAGE_SCSI, "SCSI"}, 356 {PCIC_STORAGE, PCIS_STORAGE_IDE, "ATA"}, 357 {PCIC_STORAGE, PCIS_STORAGE_FLOPPY, "floppy disk"}, 358 {PCIC_STORAGE, PCIS_STORAGE_IPI, "IPI"}, 359 {PCIC_STORAGE, PCIS_STORAGE_RAID, "RAID"}, 360 {PCIC_STORAGE, PCIS_STORAGE_ATA_ADMA, "ATA (ADMA)"}, 361 {PCIC_STORAGE, PCIS_STORAGE_SATA, "SATA"}, 362 {PCIC_STORAGE, PCIS_STORAGE_SAS, "SAS"}, 363 {PCIC_STORAGE, PCIS_STORAGE_NVM, "NVM"}, 364 {PCIC_NETWORK, -1, "network"}, 365 {PCIC_NETWORK, PCIS_NETWORK_ETHERNET, "ethernet"}, 366 {PCIC_NETWORK, PCIS_NETWORK_TOKENRING, "token ring"}, 367 {PCIC_NETWORK, PCIS_NETWORK_FDDI, "fddi"}, 368 {PCIC_NETWORK, PCIS_NETWORK_ATM, "ATM"}, 369 {PCIC_NETWORK, PCIS_NETWORK_ISDN, "ISDN"}, 370 {PCIC_DISPLAY, -1, "display"}, 371 {PCIC_DISPLAY, PCIS_DISPLAY_VGA, "VGA"}, 372 {PCIC_DISPLAY, PCIS_DISPLAY_XGA, "XGA"}, 373 {PCIC_DISPLAY, PCIS_DISPLAY_3D, "3D"}, 374 {PCIC_MULTIMEDIA, -1, "multimedia"}, 375 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_VIDEO, "video"}, 376 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_AUDIO, "audio"}, 377 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_TELE, "telephony"}, 378 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_HDA, "HDA"}, 379 {PCIC_MEMORY, -1, "memory"}, 380 {PCIC_MEMORY, PCIS_MEMORY_RAM, "RAM"}, 381 {PCIC_MEMORY, PCIS_MEMORY_FLASH, "flash"}, 382 {PCIC_BRIDGE, -1, "bridge"}, 383 {PCIC_BRIDGE, PCIS_BRIDGE_HOST, "HOST-PCI"}, 384 {PCIC_BRIDGE, PCIS_BRIDGE_ISA, "PCI-ISA"}, 385 {PCIC_BRIDGE, PCIS_BRIDGE_EISA, "PCI-EISA"}, 386 {PCIC_BRIDGE, PCIS_BRIDGE_MCA, "PCI-MCA"}, 387 {PCIC_BRIDGE, PCIS_BRIDGE_PCI, "PCI-PCI"}, 388 {PCIC_BRIDGE, PCIS_BRIDGE_PCMCIA, "PCI-PCMCIA"}, 389 {PCIC_BRIDGE, PCIS_BRIDGE_NUBUS, "PCI-NuBus"}, 390 {PCIC_BRIDGE, PCIS_BRIDGE_CARDBUS, "PCI-CardBus"}, 391 {PCIC_BRIDGE, PCIS_BRIDGE_RACEWAY, "PCI-RACEway"}, 392 {PCIC_SIMPLECOMM, -1, "simple comms"}, 393 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_UART, "UART"}, /* could detect 16550 */ 394 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_PAR, "parallel port"}, 395 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_MULSER, "multiport serial"}, 396 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_MODEM, "generic modem"}, 397 {PCIC_BASEPERIPH, -1, "base peripheral"}, 398 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_PIC, "interrupt controller"}, 399 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_DMA, "DMA controller"}, 400 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_TIMER, "timer"}, 401 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_RTC, "realtime clock"}, 402 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_PCIHOT, "PCI hot-plug controller"}, 403 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_SDHC, "SD host controller"}, 404 {PCIC_INPUTDEV, -1, "input device"}, 405 {PCIC_INPUTDEV, PCIS_INPUTDEV_KEYBOARD, "keyboard"}, 406 {PCIC_INPUTDEV, PCIS_INPUTDEV_DIGITIZER,"digitizer"}, 407 {PCIC_INPUTDEV, PCIS_INPUTDEV_MOUSE, "mouse"}, 408 {PCIC_INPUTDEV, PCIS_INPUTDEV_SCANNER, "scanner"}, 409 {PCIC_INPUTDEV, PCIS_INPUTDEV_GAMEPORT, "gameport"}, 410 {PCIC_DOCKING, -1, "docking station"}, 411 {PCIC_PROCESSOR, -1, "processor"}, 412 {PCIC_SERIALBUS, -1, "serial bus"}, 413 {PCIC_SERIALBUS, PCIS_SERIALBUS_FW, "FireWire"}, 414 {PCIC_SERIALBUS, PCIS_SERIALBUS_ACCESS, "AccessBus"}, 415 {PCIC_SERIALBUS, PCIS_SERIALBUS_SSA, "SSA"}, 416 {PCIC_SERIALBUS, PCIS_SERIALBUS_USB, "USB"}, 417 {PCIC_SERIALBUS, PCIS_SERIALBUS_FC, "Fibre Channel"}, 418 {PCIC_SERIALBUS, PCIS_SERIALBUS_SMBUS, "SMBus"}, 419 {PCIC_WIRELESS, -1, "wireless controller"}, 420 {PCIC_WIRELESS, PCIS_WIRELESS_IRDA, "iRDA"}, 421 {PCIC_WIRELESS, PCIS_WIRELESS_IR, "IR"}, 422 {PCIC_WIRELESS, PCIS_WIRELESS_RF, "RF"}, 423 {PCIC_INTELLIIO, -1, "intelligent I/O controller"}, 424 {PCIC_INTELLIIO, PCIS_INTELLIIO_I2O, "I2O"}, 425 {PCIC_SATCOM, -1, "satellite communication"}, 426 {PCIC_SATCOM, PCIS_SATCOM_TV, "sat TV"}, 427 {PCIC_SATCOM, PCIS_SATCOM_AUDIO, "sat audio"}, 428 {PCIC_SATCOM, PCIS_SATCOM_VOICE, "sat voice"}, 429 {PCIC_SATCOM, PCIS_SATCOM_DATA, "sat data"}, 430 {PCIC_CRYPTO, -1, "encrypt/decrypt"}, 431 {PCIC_CRYPTO, PCIS_CRYPTO_NETCOMP, "network/computer crypto"}, 432 {PCIC_CRYPTO, PCIS_CRYPTO_NETCOMP, "entertainment crypto"}, 433 {PCIC_DASP, -1, "dasp"}, 434 {PCIC_DASP, PCIS_DASP_DPIO, "DPIO module"}, 435 {0, 0, NULL} 436}; 437 438static const char * 439guess_class(struct pci_conf *p) 440{ 441 int i; 442 443 for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) { 444 if (pci_nomatch_tab[i].class == p->pc_class) 445 return(pci_nomatch_tab[i].desc); 446 } 447 return(NULL); 448} 449 450static const char * 451guess_subclass(struct pci_conf *p) 452{ 453 int i; 454 455 for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) { 456 if ((pci_nomatch_tab[i].class == p->pc_class) && 457 (pci_nomatch_tab[i].subclass == p->pc_subclass)) 458 return(pci_nomatch_tab[i].desc); 459 } 460 return(NULL); 461} 462 463static int 464load_vendors(void) 465{ 466 const char *dbf; 467 FILE *db; 468 struct pci_vendor_info *cv; 469 struct pci_device_info *cd; 470 char buf[1024], str[1024]; 471 char *ch; 472 int id, error; 473 474 /* 475 * Locate the database and initialise. 476 */ 477 TAILQ_INIT(&pci_vendors); 478 if ((dbf = getenv("PCICONF_VENDOR_DATABASE")) == NULL) 479 dbf = _PATH_PCIVDB; 480 if ((db = fopen(dbf, "r")) == NULL) 481 return(1); 482 cv = NULL; 483 cd = NULL; 484 error = 0; 485 486 /* 487 * Scan input lines from the database 488 */ 489 for (;;) { 490 if (fgets(buf, sizeof(buf), db) == NULL) 491 break; 492 493 if ((ch = strchr(buf, '#')) != NULL) 494 *ch = '\0'; 495 ch = strchr(buf, '\0') - 1; 496 while (ch > buf && isspace(*ch)) 497 *ch-- = '\0'; 498 if (ch <= buf) 499 continue; 500 501 /* Can't handle subvendor / subdevice entries yet */ 502 if (buf[0] == '\t' && buf[1] == '\t') 503 continue; 504 505 /* Check for vendor entry */ 506 if (buf[0] != '\t' && sscanf(buf, "%04x %[^\n]", &id, str) == 2) { 507 if ((id == 0) || (strlen(str) < 1)) 508 continue; 509 if ((cv = malloc(sizeof(struct pci_vendor_info))) == NULL) { 510 warn("allocating vendor entry"); 511 error = 1; 512 break; 513 } 514 if ((cv->desc = strdup(str)) == NULL) { 515 free(cv); 516 warn("allocating vendor description"); 517 error = 1; 518 break; 519 } 520 cv->id = id; 521 TAILQ_INIT(&cv->devs); 522 TAILQ_INSERT_TAIL(&pci_vendors, cv, link); 523 continue; 524 } 525 526 /* Check for device entry */ 527 if (buf[0] == '\t' && sscanf(buf + 1, "%04x %[^\n]", &id, str) == 2) { 528 if ((id == 0) || (strlen(str) < 1)) 529 continue; 530 if (cv == NULL) { 531 warnx("device entry with no vendor!"); 532 continue; 533 } 534 if ((cd = malloc(sizeof(struct pci_device_info))) == NULL) { 535 warn("allocating device entry"); 536 error = 1; 537 break; 538 } 539 if ((cd->desc = strdup(str)) == NULL) { 540 free(cd); 541 warn("allocating device description"); 542 error = 1; 543 break; 544 } 545 cd->id = id; 546 TAILQ_INSERT_TAIL(&cv->devs, cd, link); 547 continue; 548 } 549 550 /* It's a comment or junk, ignore it */ 551 } 552 if (ferror(db)) 553 error = 1; 554 fclose(db); 555 556 return(error); 557} 558 559uint32_t 560read_config(int fd, struct pcisel *sel, long reg, int width) 561{ 562 struct pci_io pi; 563 564 pi.pi_sel = *sel; 565 pi.pi_reg = reg; 566 pi.pi_width = width; 567 568 if (ioctl(fd, PCIOCREAD, &pi) < 0) 569 err(1, "ioctl(PCIOCREAD)"); 570 571 return (pi.pi_data); 572} 573 574static struct pcisel 575getdevice(const char *name) 576{ 577 struct pci_conf_io pc; 578 struct pci_conf conf[1]; 579 struct pci_match_conf patterns[1]; 580 char *cp; 581 int fd; 582 583 fd = open(_PATH_DEVPCI, O_RDONLY, 0); 584 if (fd < 0) 585 err(1, "%s", _PATH_DEVPCI); 586 587 bzero(&pc, sizeof(struct pci_conf_io)); 588 pc.match_buf_len = sizeof(conf); 589 pc.matches = conf; 590 591 bzero(&patterns, sizeof(patterns)); 592 593 /* 594 * The pattern structure requires the unit to be split out from 595 * the driver name. Walk backwards from the end of the name to 596 * find the start of the unit. 597 */ 598 if (name[0] == '\0') 599 err(1, "Empty device name"); 600 cp = strchr(name, '\0'); 601 assert(cp != NULL && cp != name); 602 cp--; 603 while (cp != name && isdigit(cp[-1])) 604 cp--; 605 if (cp == name) 606 errx(1, "Invalid device name"); 607 if ((size_t)(cp - name) + 1 > sizeof(patterns[0].pd_name)) 608 errx(1, "Device name i2s too long"); 609 memcpy(patterns[0].pd_name, name, cp - name); 610 patterns[0].pd_unit = strtol(cp, &cp, 10); 611 assert(*cp == '\0'); 612 patterns[0].flags = PCI_GETCONF_MATCH_NAME | PCI_GETCONF_MATCH_UNIT; 613 pc.num_patterns = 1; 614 pc.pat_buf_len = sizeof(patterns); 615 pc.patterns = patterns; 616 617 if (ioctl(fd, PCIOCGETCONF, &pc) == -1) 618 err(1, "ioctl(PCIOCGETCONF)"); 619 if (pc.status != PCI_GETCONF_LAST_DEVICE && 620 pc.status != PCI_GETCONF_MORE_DEVS) 621 errx(1, "error returned from PCIOCGETCONF ioctl"); 622 close(fd); 623 if (pc.num_matches == 0) 624 errx(1, "Device not found"); 625 return (conf[0].pc_sel); 626} 627 628static struct pcisel 629parsesel(const char *str) 630{ 631 char *ep = strchr(str, '@'); 632 char *epbase; 633 struct pcisel sel; 634 unsigned long selarr[4]; 635 int i; 636 637 if (ep == NULL) 638 ep = (char *)str; 639 else 640 ep++; 641 642 epbase = ep; 643 644 if (strncmp(ep, "pci", 3) == 0) { 645 ep += 3; 646 i = 0; 647 do { 648 selarr[i++] = strtoul(ep, &ep, 10); 649 } while ((*ep == ':' || *ep == '.') && *++ep != '\0' && i < 4); 650 651 if (i > 2) 652 sel.pc_func = selarr[--i]; 653 else 654 sel.pc_func = 0; 655 sel.pc_dev = selarr[--i]; 656 sel.pc_bus = selarr[--i]; 657 if (i > 0) 658 sel.pc_domain = selarr[--i]; 659 else 660 sel.pc_domain = 0; 661 } 662 if (*ep != '\x0' || ep == epbase) 663 errx(1, "cannot parse selector %s", str); 664 return sel; 665} 666 667static struct pcisel 668getsel(const char *str) 669{ 670 671 /* 672 * No device names contain colons and selectors always contain 673 * at least one colon. 674 */ 675 if (strchr(str, ':') == NULL) 676 return (getdevice(str)); 677 else 678 return (parsesel(str)); 679} 680 681static void 682readone(int fd, struct pcisel *sel, long reg, int width) 683{ 684 685 printf("%0*x", width*2, read_config(fd, sel, reg, width)); 686} 687 688static void 689readit(const char *name, const char *reg, int width) 690{ 691 long rstart; 692 long rend; 693 long r; 694 char *end; 695 int i; 696 int fd; 697 struct pcisel sel; 698 699 fd = open(_PATH_DEVPCI, O_RDWR, 0); 700 if (fd < 0) 701 err(1, "%s", _PATH_DEVPCI); 702 703 rend = rstart = strtol(reg, &end, 0); 704 if (end && *end == ':') { 705 end++; 706 rend = strtol(end, (char **) 0, 0); 707 } 708 sel = getsel(name); 709 for (i = 1, r = rstart; r <= rend; i++, r += width) { 710 readone(fd, &sel, r, width); 711 if (i && !(i % 8)) 712 putchar(' '); 713 putchar(i % (16/width) ? ' ' : '\n'); 714 } 715 if (i % (16/width) != 1) 716 putchar('\n'); 717 close(fd); 718} 719 720static void 721writeit(const char *name, const char *reg, const char *data, int width) 722{ 723 int fd; 724 struct pci_io pi; 725 726 pi.pi_sel = getsel(name); 727 pi.pi_reg = strtoul(reg, (char **)0, 0); /* XXX error check */ 728 pi.pi_width = width; 729 pi.pi_data = strtoul(data, (char **)0, 0); /* XXX error check */ 730 731 fd = open(_PATH_DEVPCI, O_RDWR, 0); 732 if (fd < 0) 733 err(1, "%s", _PATH_DEVPCI); 734 735 if (ioctl(fd, PCIOCWRITE, &pi) < 0) 736 err(1, "ioctl(PCIOCWRITE)"); 737} 738 739static void 740chkattached(const char *name) 741{ 742 int fd; 743 struct pci_io pi; 744 745 pi.pi_sel = getsel(name); 746 747 fd = open(_PATH_DEVPCI, O_RDWR, 0); 748 if (fd < 0) 749 err(1, "%s", _PATH_DEVPCI); 750 751 if (ioctl(fd, PCIOCATTACHED, &pi) < 0) 752 err(1, "ioctl(PCIOCATTACHED)"); 753 754 exitstatus = pi.pi_data ? 0 : 2; /* exit(2), if NOT attached */ 755 printf("%s: %s%s\n", name, pi.pi_data == 0 ? "not " : "", "attached"); 756} 757