usr.sbin/pciconf/pciconf.c

   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_RDONLY, 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_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_TELE,   "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_RACEWAY,    "PCI-RACEway"},
 295         {PCIC_SIMPLECOMM,       -1,                     "simple comms"},
 296         {PCIC_SIMPLECOMM,       PCIS_SIMPLECOMM_UART,   "UART"},        /* could detect 16550 */
 297         {PCIC_SIMPLECOMM,       PCIS_SIMPLECOMM_PAR,    "parallel port"},
 298         {PCIC_SIMPLECOMM,       PCIS_SIMPLECOMM_MULSER, "multiport serial"},
 299         {PCIC_SIMPLECOMM,       PCIS_SIMPLECOMM_MODEM,  "generic modem"},
 300         {PCIC_BASEPERIPH,       -1,                     "base peripheral"},
 301         {PCIC_BASEPERIPH,       PCIS_BASEPERIPH_PIC,    "interrupt controller"},
 302         {PCIC_BASEPERIPH,       PCIS_BASEPERIPH_DMA,    "DMA controller"},
 303         {PCIC_BASEPERIPH,       PCIS_BASEPERIPH_TIMER,  "timer"},
 304         {PCIC_BASEPERIPH,       PCIS_BASEPERIPH_RTC,    "realtime clock"},
 305         {PCIC_BASEPERIPH,       PCIS_BASEPERIPH_PCIHOT, "PCI hot-plug controller"},
 306         {PCIC_INPUTDEV,         -1,                     "input device"},
 307         {PCIC_INPUTDEV,         PCIS_INPUTDEV_KEYBOARD, "keyboard"},
 308         {PCIC_INPUTDEV,         PCIS_INPUTDEV_DIGITIZER,"digitizer"},
 309         {PCIC_INPUTDEV,         PCIS_INPUTDEV_MOUSE,    "mouse"},
 310         {PCIC_INPUTDEV,         PCIS_INPUTDEV_SCANNER,  "scanner"},
 311         {PCIC_INPUTDEV,         PCIS_INPUTDEV_GAMEPORT, "gameport"},
 312         {PCIC_DOCKING,          -1,                     "docking station"},
 313         {PCIC_PROCESSOR,        -1,                     "processor"},
 314         {PCIC_SERIALBUS,        -1,                     "serial bus"},
 315         {PCIC_SERIALBUS,        PCIS_SERIALBUS_FW,      "FireWire"},
 316         {PCIC_SERIALBUS,        PCIS_SERIALBUS_ACCESS,  "AccessBus"},
 317         {PCIC_SERIALBUS,        PCIS_SERIALBUS_SSA,     "SSA"},
 318         {PCIC_SERIALBUS,        PCIS_SERIALBUS_USB,     "USB"},
 319         {PCIC_SERIALBUS,        PCIS_SERIALBUS_FC,      "Fibre Channel"},
 320         {PCIC_SERIALBUS,        PCIS_SERIALBUS_SMBUS,   "SMBus"},
 321         {PCIC_WIRELESS,         -1,                     "wireless controller"},
 322         {PCIC_WIRELESS,         PCIS_WIRELESS_IRDA,     "iRDA"},
 323         {PCIC_WIRELESS,         PCIS_WIRELESS_IR,       "IR"},
 324         {PCIC_WIRELESS,         PCIS_WIRELESS_RF,       "RF"},
 325         {PCIC_INTELLIIO,        -1,                     "intelligent I/O controller"},
 326         {PCIC_INTELLIIO,        PCIS_INTELLIIO_I2O,     "I2O"},
 327         {PCIC_SATCOM,           -1,                     "satellite communication"},
 328         {PCIC_SATCOM,           PCIS_SATCOM_TV,         "sat TV"},
 329         {PCIC_SATCOM,           PCIS_SATCOM_AUDIO,      "sat audio"},
 330         {PCIC_SATCOM,           PCIS_SATCOM_VOICE,      "sat voice"},
 331         {PCIC_SATCOM,           PCIS_SATCOM_DATA,       "sat data"},
 332         {PCIC_CRYPTO,           -1,                     "encrypt/decrypt"},
 333         {PCIC_CRYPTO,           PCIS_CRYPTO_NETCOMP,    "network/computer crypto"},
 334         {PCIC_CRYPTO,           PCIS_CRYPTO_NETCOMP,    "entertainment crypto"},
 335         {PCIC_DASP,             -1,                     "dasp"},
 336         {PCIC_DASP,             PCIS_DASP_DPIO,         "DPIO module"},
 337         {0, 0,          NULL}
 338 };
 339
 340 static 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 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         char *dbf;
 369         FILE *db;
 370         struct pci_vendor_info *cv;
 371         struct pci_device_info *cd;
 372         char buf[1024], str[1024];
 373         char *ch;
 374         int id, error;
 375
 376         /*
 377          * Locate the database and initialise.
 378          */
 379         TAILQ_INIT(&pci_vendors);
 380         if ((dbf = getenv("PCICONF_VENDOR_DATABASE")) == NULL)
 381                 dbf = _PATH_PCIVDB;
 382         if ((db = fopen(dbf, "r")) == NULL)
 383                 return(1);
 384         cv = NULL;
 385         cd = NULL;
 386         error = 0;
 387
 388         /*
 389          * Scan input lines from the database
 390          */
 391         for (;;) {
 392                 if (fgets(buf, sizeof(buf), db) == NULL)
 393                         break;
 394
 395                 if ((ch = strchr(buf, '#')) != NULL)
 396                         *ch = '\0';
 397                 ch = strchr(buf, '\0') - 1;
 398                 while (ch > buf && isspace(*ch))
 399                         *ch-- = '\0';
 400                 if (ch <= buf)
 401                         continue;
 402
 403                 /* Can't handle subvendor / subdevice entries yet */
 404                 if (buf[0] == '\t' && buf[1] == '\t')
 405                         continue;
 406
 407                 /* Check for vendor entry */
 408                 if (buf[0] != '\t' && sscanf(buf, "%04x %[^\n]", &id, str) == 2) {
 409                         if ((id == 0) || (strlen(str) < 1))
 410                                 continue;
 411                         if ((cv = malloc(sizeof(struct pci_vendor_info))) == NULL) {
 412                                 warn("allocating vendor entry");
 413                                 error = 1;
 414                                 break;
 415                         }
 416                         if ((cv->desc = strdup(str)) == NULL) {
 417                                 free(cv);
 418                                 warn("allocating vendor description");
 419                                 error = 1;
 420                                 break;
 421                         }
 422                         cv->id = id;
 423                         TAILQ_INIT(&cv->devs);
 424                         TAILQ_INSERT_TAIL(&pci_vendors, cv, link);
 425                         continue;
 426                 }
 427
 428                 /* Check for device entry */
 429                 if (buf[0] == '\t' && sscanf(buf + 1, "%04x %[^\n]", &id, str) == 2) {
 430                         if ((id == 0) || (strlen(str) < 1))
 431                                 continue;
 432                         if (cv == NULL) {
 433                                 warnx("device entry with no vendor!");
 434                                 continue;
 435                         }
 436                         if ((cd = malloc(sizeof(struct pci_device_info))) == NULL) {
 437                                 warn("allocating device entry");
 438                                 error = 1;
 439                                 break;
 440                         }
 441                         if ((cd->desc = strdup(str)) == NULL) {
 442                                 free(cd);
 443                                 warn("allocating device description");
 444                                 error = 1;
 445                                 break;
 446                         }
 447                         cd->id = id;
 448                         TAILQ_INSERT_TAIL(&cv->devs, cd, link);
 449                         continue;
 450                 }
 451
 452                 /* It's a comment or junk, ignore it */
 453         }
 454         if (ferror(db))
 455                 error = 1;
 456         fclose(db);
 457
 458         return(error);
 459 }
 460
 461
 462 static struct pcisel
 463 getsel(const char *str)
 464 {
 465         char *ep = strchr(str, '@');
 466         char *epbase;
 467         struct pcisel sel;
 468
 469         if (ep == NULL)
 470                 ep = (char *)str;
 471         else
 472                 ep++;
 473
 474         epbase = ep;
 475
 476         if (strncmp(ep, "pci", 3) == 0) {
 477                 ep += 3;
 478                 sel.pc_bus = strtoul(ep, &ep, 0);
 479                 if (!ep || *ep++ != ':')
 480                         errx(1, "cannot parse selector %s", str);
 481                 sel.pc_dev = strtoul(ep, &ep, 0);
 482                 if (!ep || *ep != ':') {
 483                         sel.pc_func = 0;
 484                 } else {
 485                         ep++;
 486                         sel.pc_func = strtoul(ep, &ep, 0);
 487                 }
 488                 if (*ep == ':')
 489                         ep++;
 490         }
 491         if (*ep != '\x0' || ep == epbase)
 492                 errx(1, "cannot parse selector %s", str);
 493         return sel;
 494 }
 495
 496 static void
 497 readone(int fd, struct pcisel *sel, long reg, int width)
 498 {
 499         struct pci_io pi;
 500
 501         pi.pi_sel = *sel;
 502         pi.pi_reg = reg;
 503         pi.pi_width = width;
 504
 505         if (ioctl(fd, PCIOCREAD, &pi) < 0)
 506                 err(1, "ioctl(PCIOCREAD)");
 507
 508         printf("%0*x", width*2, pi.pi_data);
 509 }
 510
 511 static void
 512 readit(const char *name, const char *reg, int width)
 513 {
 514         long rstart;
 515         long rend;
 516         long r;
 517         char *end;
 518         int i;
 519         int fd;
 520         struct pcisel sel;
 521
 522         fd = open(_PATH_DEVPCI, O_RDWR, 0);
 523         if (fd < 0)
 524                 err(1, "%s", _PATH_DEVPCI);
 525
 526         rend = rstart = strtol(reg, &end, 0);
 527         if (end && *end == ':') {
 528                 end++;
 529                 rend = strtol(end, (char **) 0, 0);
 530         }
 531         sel = getsel(name);
 532         for (i = 1, r = rstart; r <= rend; i++, r += width) {
 533                 readone(fd, &sel, r, width);
 534                 if (i && !(i % 8)) putchar(' ');
 535                 putchar(i % (16/width) ? ' ' : '\n');
 536         }
 537         if (i % (16/width) != 1)
 538                 putchar('\n');
 539         close(fd);
 540 }
 541
 542 static void
 543 writeit(const char *name, const char *reg, const char *data, int width)
 544 {
 545         int fd;
 546         struct pci_io pi;
 547
 548         pi.pi_sel = getsel(name);
 549         pi.pi_reg = strtoul(reg, (char **)0, 0); /* XXX error check */
 550         pi.pi_width = width;
 551         pi.pi_data = strtoul(data, (char **)0, 0); /* XXX error check */
 552
 553         fd = open(_PATH_DEVPCI, O_RDWR, 0);
 554         if (fd < 0)
 555                 err(1, "%s", _PATH_DEVPCI);
 556
 557         if (ioctl(fd, PCIOCWRITE, &pi) < 0)
 558                 err(1, "ioctl(PCIOCWRITE)");
 559 }
 560
 561 static void
 562 chkattached (const char *name, int width)
 563 {
 564         int fd;
 565         struct pci_io pi;
 566
 567         pi.pi_sel = getsel(name);
 568         pi.pi_reg = 0;
 569         pi.pi_width = width;
 570         pi.pi_data = 0;
 571
 572         fd = open(_PATH_DEVPCI, O_RDWR, 0);
 573         if (fd < 0)
 574                 err(1, "%s", _PATH_DEVPCI);
 575
 576         if (ioctl(fd, PCIOCATTACHED, &pi) < 0)
 577                 err(1, "ioctl(PCIOCATTACHED)");
 578
 579         exitstatus = pi.pi_data ? 0 : 2; /* exit(2), if NOT attached */
 580         printf("%s: %s%s\n", name, pi.pi_data == 0 ? "not " : "", "attached");
 581 }