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 <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, "abchlrwv")) != -1) {
 101                 switch(c) {
 102                 case 'a':
 103                         attachedmode = 1;
 104                         break;
 105
 106                 case 'b':
 107                         byte = 1;
 108                         break;
 109
 110                 case 'c':
 111                         caps = 1;
 112                         break;
 113
 114                 case 'h':
 115                         isshort = 1;
 116                         break;
 117
 118                 case 'l':
 119                         listmode = 1;
 120                         break;
 121
 122                 case 'r':
 123                         readmode = 1;
 124                         break;
 125
 126                 case 'w':
 127                         writemode = 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                         printf("%s%d@pci%d:%d:%d:%d:\tclass=0x%06x card=0x%08x "
 207                             "chip=0x%08x rev=0x%02x hdr=0x%02x\n",
 208                             (p->pd_name && *p->pd_name) ? p->pd_name :
 209                             "none",
 210                             (p->pd_name && *p->pd_name) ? (int)p->pd_unit :
 211                             none_count++, p->pc_sel.pc_domain,
 212                             p->pc_sel.pc_bus, p->pc_sel.pc_dev,
 213                             p->pc_sel.pc_func, (p->pc_class << 16) |
 214                             (p->pc_subclass << 8) | p->pc_progif,
 215                             (p->pc_subdevice << 16) | p->pc_subvendor,
 216                             (p->pc_device << 16) | p->pc_vendor,
 217                             p->pc_revid, p->pc_hdr);
 218                         if (verbose)
 219                                 list_verbose(p);
 220                         if (caps)
 221                                 list_caps(fd, p);
 222                 }
 223         } while (pc.status == PCI_GETCONF_MORE_DEVS);
 224
 225         close(fd);
 226 }
 227
 228 static void
 229 list_verbose(struct pci_conf *p)
 230 {
 231         struct pci_vendor_info  *vi;
 232         struct pci_device_info  *di;
 233         const char *dp;
 234
 235         TAILQ_FOREACH(vi, &pci_vendors, link) {
 236                 if (vi->id == p->pc_vendor) {
 237                         printf("    vendor     = '%s'\n", vi->desc);
 238                         break;
 239                 }
 240         }
 241         if (vi == NULL) {
 242                 di = NULL;
 243         } else {
 244                 TAILQ_FOREACH(di, &vi->devs, link) {
 245                         if (di->id == p->pc_device) {
 246                                 printf("    device     = '%s'\n", di->desc);
 247                                 break;
 248                         }
 249                 }
 250         }
 251         if ((dp = guess_class(p)) != NULL)
 252                 printf("    class      = %s\n", dp);
 253         if ((dp = guess_subclass(p)) != NULL)
 254                 printf("    subclass   = %s\n", dp);
 255 }
 256
 257 /*
 258  * This is a direct cut-and-paste from the table in sys/dev/pci/pci.c.
 259  */
 260 static struct
 261 {
 262         int     class;
 263         int     subclass;
 264         const char *desc;
 265 } pci_nomatch_tab[] = {
 266         {PCIC_OLD,              -1,                     "old"},
 267         {PCIC_OLD,              PCIS_OLD_NONVGA,        "non-VGA display device"},
 268         {PCIC_OLD,              PCIS_OLD_VGA,           "VGA-compatible display device"},
 269         {PCIC_STORAGE,          -1,                     "mass storage"},
 270         {PCIC_STORAGE,          PCIS_STORAGE_SCSI,      "SCSI"},
 271         {PCIC_STORAGE,          PCIS_STORAGE_IDE,       "ATA"},
 272         {PCIC_STORAGE,          PCIS_STORAGE_FLOPPY,    "floppy disk"},
 273         {PCIC_STORAGE,          PCIS_STORAGE_IPI,       "IPI"},
 274         {PCIC_STORAGE,          PCIS_STORAGE_RAID,      "RAID"},
 275         {PCIC_NETWORK,          -1,                     "network"},
 276         {PCIC_NETWORK,          PCIS_NETWORK_ETHERNET,  "ethernet"},
 277         {PCIC_NETWORK,          PCIS_NETWORK_TOKENRING, "token ring"},
 278         {PCIC_NETWORK,          PCIS_NETWORK_FDDI,      "fddi"},
 279         {PCIC_NETWORK,          PCIS_NETWORK_ATM,       "ATM"},
 280         {PCIC_NETWORK,          PCIS_NETWORK_ISDN,      "ISDN"},
 281         {PCIC_DISPLAY,          -1,                     "display"},
 282         {PCIC_DISPLAY,          PCIS_DISPLAY_VGA,       "VGA"},
 283         {PCIC_DISPLAY,          PCIS_DISPLAY_XGA,       "XGA"},
 284         {PCIC_DISPLAY,          PCIS_DISPLAY_3D,        "3D"},
 285         {PCIC_MULTIMEDIA,       -1,                     "multimedia"},
 286         {PCIC_MULTIMEDIA,       PCIS_MULTIMEDIA_VIDEO,  "video"},
 287         {PCIC_MULTIMEDIA,       PCIS_MULTIMEDIA_AUDIO,  "audio"},
 288         {PCIC_MULTIMEDIA,       PCIS_MULTIMEDIA_TELE,   "telephony"},
 289         {PCIC_MEMORY,           -1,                     "memory"},
 290         {PCIC_MEMORY,           PCIS_MEMORY_RAM,        "RAM"},
 291         {PCIC_MEMORY,           PCIS_MEMORY_FLASH,      "flash"},
 292         {PCIC_BRIDGE,           -1,                     "bridge"},
 293         {PCIC_BRIDGE,           PCIS_BRIDGE_HOST,       "HOST-PCI"},
 294         {PCIC_BRIDGE,           PCIS_BRIDGE_ISA,        "PCI-ISA"},
 295         {PCIC_BRIDGE,           PCIS_BRIDGE_EISA,       "PCI-EISA"},
 296         {PCIC_BRIDGE,           PCIS_BRIDGE_MCA,        "PCI-MCA"},
 297         {PCIC_BRIDGE,           PCIS_BRIDGE_PCI,        "PCI-PCI"},
 298         {PCIC_BRIDGE,           PCIS_BRIDGE_PCMCIA,     "PCI-PCMCIA"},
 299         {PCIC_BRIDGE,           PCIS_BRIDGE_NUBUS,      "PCI-NuBus"},
 300         {PCIC_BRIDGE,           PCIS_BRIDGE_CARDBUS,    "PCI-CardBus"},
 301         {PCIC_BRIDGE,           PCIS_BRIDGE_RACEWAY,    "PCI-RACEway"},
 302         {PCIC_SIMPLECOMM,       -1,                     "simple comms"},
 303         {PCIC_SIMPLECOMM,       PCIS_SIMPLECOMM_UART,   "UART"},        /* could detect 16550 */
 304         {PCIC_SIMPLECOMM,       PCIS_SIMPLECOMM_PAR,    "parallel port"},
 305         {PCIC_SIMPLECOMM,       PCIS_SIMPLECOMM_MULSER, "multiport serial"},
 306         {PCIC_SIMPLECOMM,       PCIS_SIMPLECOMM_MODEM,  "generic modem"},
 307         {PCIC_BASEPERIPH,       -1,                     "base peripheral"},
 308         {PCIC_BASEPERIPH,       PCIS_BASEPERIPH_PIC,    "interrupt controller"},
 309         {PCIC_BASEPERIPH,       PCIS_BASEPERIPH_DMA,    "DMA controller"},
 310         {PCIC_BASEPERIPH,       PCIS_BASEPERIPH_TIMER,  "timer"},
 311         {PCIC_BASEPERIPH,       PCIS_BASEPERIPH_RTC,    "realtime clock"},
 312         {PCIC_BASEPERIPH,       PCIS_BASEPERIPH_PCIHOT, "PCI hot-plug controller"},
 313         {PCIC_INPUTDEV,         -1,                     "input device"},
 314         {PCIC_INPUTDEV,         PCIS_INPUTDEV_KEYBOARD, "keyboard"},
 315         {PCIC_INPUTDEV,         PCIS_INPUTDEV_DIGITIZER,"digitizer"},
 316         {PCIC_INPUTDEV,         PCIS_INPUTDEV_MOUSE,    "mouse"},
 317         {PCIC_INPUTDEV,         PCIS_INPUTDEV_SCANNER,  "scanner"},
 318         {PCIC_INPUTDEV,         PCIS_INPUTDEV_GAMEPORT, "gameport"},
 319         {PCIC_DOCKING,          -1,                     "docking station"},
 320         {PCIC_PROCESSOR,        -1,                     "processor"},
 321         {PCIC_SERIALBUS,        -1,                     "serial bus"},
 322         {PCIC_SERIALBUS,        PCIS_SERIALBUS_FW,      "FireWire"},
 323         {PCIC_SERIALBUS,        PCIS_SERIALBUS_ACCESS,  "AccessBus"},
 324         {PCIC_SERIALBUS,        PCIS_SERIALBUS_SSA,     "SSA"},
 325         {PCIC_SERIALBUS,        PCIS_SERIALBUS_USB,     "USB"},
 326         {PCIC_SERIALBUS,        PCIS_SERIALBUS_FC,      "Fibre Channel"},
 327         {PCIC_SERIALBUS,        PCIS_SERIALBUS_SMBUS,   "SMBus"},
 328         {PCIC_WIRELESS,         -1,                     "wireless controller"},
 329         {PCIC_WIRELESS,         PCIS_WIRELESS_IRDA,     "iRDA"},
 330         {PCIC_WIRELESS,         PCIS_WIRELESS_IR,       "IR"},
 331         {PCIC_WIRELESS,         PCIS_WIRELESS_RF,       "RF"},
 332         {PCIC_INTELLIIO,        -1,                     "intelligent I/O controller"},
 333         {PCIC_INTELLIIO,        PCIS_INTELLIIO_I2O,     "I2O"},
 334         {PCIC_SATCOM,           -1,                     "satellite communication"},
 335         {PCIC_SATCOM,           PCIS_SATCOM_TV,         "sat TV"},
 336         {PCIC_SATCOM,           PCIS_SATCOM_AUDIO,      "sat audio"},
 337         {PCIC_SATCOM,           PCIS_SATCOM_VOICE,      "sat voice"},
 338         {PCIC_SATCOM,           PCIS_SATCOM_DATA,       "sat data"},
 339         {PCIC_CRYPTO,           -1,                     "encrypt/decrypt"},
 340         {PCIC_CRYPTO,           PCIS_CRYPTO_NETCOMP,    "network/computer crypto"},
 341         {PCIC_CRYPTO,           PCIS_CRYPTO_NETCOMP,    "entertainment crypto"},
 342         {PCIC_DASP,             -1,                     "dasp"},
 343         {PCIC_DASP,             PCIS_DASP_DPIO,         "DPIO module"},
 344         {0, 0,          NULL}
 345 };
 346
 347 static const char *
 348 guess_class(struct pci_conf *p)
 349 {
 350         int     i;
 351
 352         for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) {
 353                 if (pci_nomatch_tab[i].class == p->pc_class)
 354                         return(pci_nomatch_tab[i].desc);
 355         }
 356         return(NULL);
 357 }
 358
 359 static const char *
 360 guess_subclass(struct pci_conf *p)
 361 {
 362         int     i;
 363
 364         for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) {
 365                 if ((pci_nomatch_tab[i].class == p->pc_class) &&
 366                     (pci_nomatch_tab[i].subclass == p->pc_subclass))
 367                         return(pci_nomatch_tab[i].desc);
 368         }
 369         return(NULL);
 370 }
 371
 372 static int
 373 load_vendors(void)
 374 {
 375         const char *dbf;
 376         FILE *db;
 377         struct pci_vendor_info *cv;
 378         struct pci_device_info *cd;
 379         char buf[1024], str[1024];
 380         char *ch;
 381         int id, error;
 382
 383         /*
 384          * Locate the database and initialise.
 385          */
 386         TAILQ_INIT(&pci_vendors);
 387         if ((dbf = getenv("PCICONF_VENDOR_DATABASE")) == NULL)
 388                 dbf = _PATH_PCIVDB;
 389         if ((db = fopen(dbf, "r")) == NULL)
 390                 return(1);
 391         cv = NULL;
 392         cd = NULL;
 393         error = 0;
 394
 395         /*
 396          * Scan input lines from the database
 397          */
 398         for (;;) {
 399                 if (fgets(buf, sizeof(buf), db) == NULL)
 400                         break;
 401
 402                 if ((ch = strchr(buf, '#')) != NULL)
 403                         *ch = '\0';
 404                 ch = strchr(buf, '\0') - 1;
 405                 while (ch > buf && isspace(*ch))
 406                         *ch-- = '\0';
 407                 if (ch <= buf)
 408                         continue;
 409
 410                 /* Can't handle subvendor / subdevice entries yet */
 411                 if (buf[0] == '\t' && buf[1] == '\t')
 412                         continue;
 413
 414                 /* Check for vendor entry */
 415                 if (buf[0] != '\t' && sscanf(buf, "%04x %[^\n]", &id, str) == 2) {
 416                         if ((id == 0) || (strlen(str) < 1))
 417                                 continue;
 418                         if ((cv = malloc(sizeof(struct pci_vendor_info))) == NULL) {
 419                                 warn("allocating vendor entry");
 420                                 error = 1;
 421                                 break;
 422                         }
 423                         if ((cv->desc = strdup(str)) == NULL) {
 424                                 free(cv);
 425                                 warn("allocating vendor description");
 426                                 error = 1;
 427                                 break;
 428                         }
 429                         cv->id = id;
 430                         TAILQ_INIT(&cv->devs);
 431                         TAILQ_INSERT_TAIL(&pci_vendors, cv, link);
 432                         continue;
 433                 }
 434
 435                 /* Check for device entry */
 436                 if (buf[0] == '\t' && sscanf(buf + 1, "%04x %[^\n]", &id, str) == 2) {
 437                         if ((id == 0) || (strlen(str) < 1))
 438                                 continue;
 439                         if (cv == NULL) {
 440                                 warnx("device entry with no vendor!");
 441                                 continue;
 442                         }
 443                         if ((cd = malloc(sizeof(struct pci_device_info))) == NULL) {
 444                                 warn("allocating device entry");
 445                                 error = 1;
 446                                 break;
 447                         }
 448                         if ((cd->desc = strdup(str)) == NULL) {
 449                                 free(cd);
 450                                 warn("allocating device description");
 451                                 error = 1;
 452                                 break;
 453                         }
 454                         cd->id = id;
 455                         TAILQ_INSERT_TAIL(&cv->devs, cd, link);
 456                         continue;
 457                 }
 458
 459                 /* It's a comment or junk, ignore it */
 460         }
 461         if (ferror(db))
 462                 error = 1;
 463         fclose(db);
 464
 465         return(error);
 466 }
 467
 468 uint32_t
 469 read_config(int fd, struct pcisel *sel, long reg, int width)
 470 {
 471         struct pci_io pi;
 472
 473         pi.pi_sel = *sel;
 474         pi.pi_reg = reg;
 475         pi.pi_width = width;
 476
 477         if (ioctl(fd, PCIOCREAD, &pi) < 0)
 478                 err(1, "ioctl(PCIOCREAD)");
 479
 480         return (pi.pi_data);
 481 }
 482
 483 static struct pcisel
 484 getsel(const char *str)
 485 {
 486         char *ep = strchr(str, '@');
 487         char *epbase;
 488         struct pcisel sel;
 489         unsigned long selarr[4];
 490         int i;
 491
 492         if (ep == NULL)
 493                 ep = (char *)str;
 494         else
 495                 ep++;
 496
 497         epbase = ep;
 498
 499         if (strncmp(ep, "pci", 3) == 0) {
 500                 ep += 3;
 501                 i = 0;
 502                 do {
 503                         selarr[i++] = strtoul(ep, &ep, 10);
 504                 } while ((*ep == ':' || *ep == '.') && *++ep != '\0' && i < 4);
 505
 506                 if (i > 2)
 507                         sel.pc_func = selarr[--i];
 508                 else
 509                         sel.pc_func = 0;
 510                 sel.pc_dev = selarr[--i];
 511                 sel.pc_bus = selarr[--i];
 512                 if (i > 0)
 513                         sel.pc_domain = selarr[--i];
 514                 else
 515                         sel.pc_domain = 0;
 516         }
 517         if (*ep != '\x0' || ep == epbase)
 518                 errx(1, "cannot parse selector %s", str);
 519         return sel;
 520 }
 521
 522 static void
 523 readone(int fd, struct pcisel *sel, long reg, int width)
 524 {
 525
 526         printf("%0*x", width*2, read_config(fd, sel, reg, width));
 527 }
 528
 529 static void
 530 readit(const char *name, const char *reg, int width)
 531 {
 532         long rstart;
 533         long rend;
 534         long r;
 535         char *end;
 536         int i;
 537         int fd;
 538         struct pcisel sel;
 539
 540         fd = open(_PATH_DEVPCI, O_RDWR, 0);
 541         if (fd < 0)
 542                 err(1, "%s", _PATH_DEVPCI);
 543
 544         rend = rstart = strtol(reg, &end, 0);
 545         if (end && *end == ':') {
 546                 end++;
 547                 rend = strtol(end, (char **) 0, 0);
 548         }
 549         sel = getsel(name);
 550         for (i = 1, r = rstart; r <= rend; i++, r += width) {
 551                 readone(fd, &sel, r, width);
 552                 if (i && !(i % 8))
 553                         putchar(' ');
 554                 putchar(i % (16/width) ? ' ' : '\n');
 555         }
 556         if (i % (16/width) != 1)
 557                 putchar('\n');
 558         close(fd);
 559 }
 560
 561 static void
 562 writeit(const char *name, const char *reg, const char *data, int width)
 563 {
 564         int fd;
 565         struct pci_io pi;
 566
 567         pi.pi_sel = getsel(name);
 568         pi.pi_reg = strtoul(reg, (char **)0, 0); /* XXX error check */
 569         pi.pi_width = width;
 570         pi.pi_data = strtoul(data, (char **)0, 0); /* XXX error check */
 571
 572         fd = open(_PATH_DEVPCI, O_RDWR, 0);
 573         if (fd < 0)
 574                 err(1, "%s", _PATH_DEVPCI);
 575
 576         if (ioctl(fd, PCIOCWRITE, &pi) < 0)
 577                 err(1, "ioctl(PCIOCWRITE)");
 578 }
 579
 580 static void
 581 chkattached(const char *name, int width)
 582 {
 583         int fd;
 584         struct pci_io pi;
 585
 586         pi.pi_sel = getsel(name);
 587         pi.pi_reg = 0;
 588         pi.pi_width = width;
 589         pi.pi_data = 0;
 590
 591         fd = open(_PATH_DEVPCI, O_RDWR, 0);
 592         if (fd < 0)
 593                 err(1, "%s", _PATH_DEVPCI);
 594
 595         if (ioctl(fd, PCIOCATTACHED, &pi) < 0)
 596                 err(1, "ioctl(PCIOCATTACHED)");
 597
 598         exitstatus = pi.pi_data ? 0 : 2; /* exit(2), if NOT attached */
 599         printf("%s: %s%s\n", name, pi.pi_data == 0 ? "not " : "", "attached");
 600 }