setpci.c

   1 /*
   2  *      The PCI Utilities -- Manipulate PCI Configuration Registers
   3  *
   4  *      Copyright (c) 1998--2008 Martin Mares <mj@ucw.cz>
   5  *
   6  *      Can be freely distributed and used under the terms of the GNU GPL.
   7  */
   8
   9 #include <stdio.h>
  10 #include <string.h>
  11 #include <stdlib.h>
  12 #include <stdarg.h>
  13 #include <errno.h>
  14
  15 #define PCIUTILS_SETPCI
  16 #include "pciutils.h"
  17
  18 static int force;                       /* Don't complain if no devices match */
  19 static int verbose;                     /* Verbosity level */
  20 static int demo_mode;                   /* Only show */
  21
  22 const char program_name[] = "setpci";
  23
  24 static struct pci_access *pacc;
  25
  26 struct value {
  27   unsigned int value;
  28   unsigned int mask;
  29 };
  30
  31 struct op {
  32   struct op *next;
  33   struct pci_dev **dev_vector;
  34   u16 cap_type;                         /* PCI_CAP_xxx or 0 */
  35   u16 cap_id;
  36   unsigned int addr;
  37   unsigned int width;                   /* Byte width of the access */
  38   unsigned int num_values;              /* Number of values to write; 0=read */
  39   unsigned int number;                 /* The n-th capability of that id */
  40   struct value values[0];
  41 };
  42
  43 static struct op *first_op, **last_op = &first_op;
  44 static unsigned int max_values[] = { 0, 0xff, 0xffff, 0, 0xffffffff };
  45
  46 static struct pci_dev **
  47 select_devices(struct pci_filter *filt)
  48 {
  49   struct pci_dev *z, **a, **b;
  50   int cnt = 1;
  51
  52   for (z=pacc->devices; z; z=z->next)
  53     if (pci_filter_match(filt, z))
  54       cnt++;
  55   a = b = xmalloc(sizeof(struct device *) * cnt);
  56   for (z=pacc->devices; z; z=z->next)
  57     if (pci_filter_match(filt, z))
  58       *a++ = z;
  59   *a = NULL;
  60   return b;
  61 }
  62
  63 static void PCI_PRINTF(1,2)
  64 trace(const char *fmt, ...)
  65 {
  66   va_list args;
  67   va_start(args, fmt);
  68   if (verbose)
  69     vprintf(fmt, args);
  70   va_end(args);
  71 }
  72
  73 static void
  74 exec_op(struct op *op, struct pci_dev *dev)
  75 {
  76   const char * const formats[] = { NULL, " %02x", " %04x", NULL, " %08x" };
  77   const char * const mask_formats[] = { NULL, " %02x->(%02x:%02x)->%02x", " %04x->(%04x:%04x)->%04x", NULL, " %08x->(%08x:%08x)->%08x" };
  78   unsigned int i, x, y;
  79   int addr = 0;
  80   int width = op->width;
  81   char slot[16];
  82
  83   sprintf(slot, "%04x:%02x:%02x.%x", dev->domain, dev->bus, dev->dev, dev->func);
  84   trace("%s ", slot);
  85   if (op->cap_type)
  86     {
  87       struct pci_cap *cap;
  88       unsigned int cap_nr = op->number;
  89       cap = pci_find_cap_nr(dev, op->cap_id, op->cap_type, &cap_nr);
  90       if (cap)
  91         addr = cap->addr;
  92       else if (cap_nr == 0)
  93         die("%s: Instance #%d of %s %04x not found - there are no capabilities with that id.", slot,
  94             op->number, ((op->cap_type == PCI_CAP_NORMAL) ? "Capability" : "Extended capability"),
  95             op->cap_id);
  96       else
  97         die("%s: Instance #%d of %s %04x not found - there %s only %d capability with that id.", slot,
  98             op->number, ((op->cap_type == PCI_CAP_NORMAL) ? "Capability" : "Extended capability"),
  99             op->cap_id, ((cap_nr == 1) ? "is" : "are"), cap_nr);
 100
 101       trace(((op->cap_type == PCI_CAP_NORMAL) ? "(cap %02x @%02x) " : "(ecap %04x @%03x) "), op->cap_id, addr);
 102     }
 103   addr += op->addr;
 104   trace("@%02x", addr);
 105
 106   /* We have already checked it when parsing, but addressing relative to capabilities can change the address. */
 107   if (addr & (width-1))
 108     die("%s: Unaligned access of width %d to register %04x", slot, width, addr);
 109   if (addr + width > 0x1000)
 110     die("%s: Access of width %d to register %04x out of range", slot, width, addr);
 111
 112   if (op->num_values)
 113     {
 114       for (i=0; i<op->num_values; i++)
 115         {
 116           if ((op->values[i].mask & max_values[width]) == max_values[width])
 117             {
 118               x = op->values[i].value;
 119               trace(formats[width], op->values[i].value);
 120             }
 121           else
 122             {
 123               switch (width)
 124                 {
 125                 case 1:
 126                   y = pci_read_byte(dev, addr);
 127                   break;
 128                 case 2:
 129                   y = pci_read_word(dev, addr);
 130                   break;
 131                 default:
 132                   y = pci_read_long(dev, addr);
 133                   break;
 134                 }
 135               x = (y & ~op->values[i].mask) | op->values[i].value;
 136               trace(mask_formats[width], y, op->values[i].value, op->values[i].mask, x);
 137             }
 138           if (!demo_mode)
 139             {
 140               switch (width)
 141                 {
 142                 case 1:
 143                   pci_write_byte(dev, addr, x);
 144                   break;
 145                 case 2:
 146                   pci_write_word(dev, addr, x);
 147                   break;
 148                 default:
 149                   pci_write_long(dev, addr, x);
 150                   break;
 151                 }
 152             }
 153           addr += width;
 154         }
 155       trace("\n");
 156     }
 157   else
 158     {
 159       trace(" = ");
 160       switch (width)
 161         {
 162         case 1:
 163           x = pci_read_byte(dev, addr);
 164           break;
 165         case 2:
 166           x = pci_read_word(dev, addr);
 167           break;
 168         default:
 169           x = pci_read_long(dev, addr);
 170           break;
 171         }
 172       printf(formats[width]+1, x);
 173       putchar('\n');
 174     }
 175 }
 176
 177 static void
 178 execute(struct op *op)
 179 {
 180   struct pci_dev **vec = NULL;
 181   struct pci_dev **pdev, *dev;
 182   struct op *oops;
 183
 184   while (op)
 185     {
 186       pdev = vec = op->dev_vector;
 187       while (dev = *pdev++)
 188         for (oops=op; oops && oops->dev_vector == vec; oops=oops->next)
 189           exec_op(oops, dev);
 190       while (op && op->dev_vector == vec)
 191         op = op->next;
 192     }
 193 }
 194
 195 static void
 196 scan_ops(struct op *op)
 197 {
 198   if (demo_mode)
 199     return;
 200   while (op)
 201     {
 202       if (op->num_values)
 203         pacc->writeable = 1;
 204       op = op->next;
 205     }
 206 }
 207
 208 struct reg_name {
 209   unsigned int cap;
 210   unsigned int offset;
 211   unsigned int width;
 212   const char *name;
 213 };
 214
 215 static const struct reg_name pci_reg_names[] = {
 216   {       0, 0x00, 2, "VENDOR_ID" },
 217   {       0, 0x02, 2, "DEVICE_ID" },
 218   {       0, 0x04, 2, "COMMAND" },
 219   {       0, 0x06, 2, "STATUS" },
 220   {       0, 0x08, 1, "REVISION" },
 221   {       0, 0x09, 1, "CLASS_PROG" },
 222   {       0, 0x0a, 2, "CLASS_DEVICE" },
 223   {       0, 0x0c, 1, "CACHE_LINE_SIZE" },
 224   {       0, 0x0d, 1, "LATENCY_TIMER" },
 225   {       0, 0x0e, 1, "HEADER_TYPE" },
 226   {       0, 0x0f, 1, "BIST" },
 227   {       0, 0x10, 4, "BASE_ADDRESS_0" },
 228   {       0, 0x14, 4, "BASE_ADDRESS_1" },
 229   {       0, 0x18, 4, "BASE_ADDRESS_2" },
 230   {       0, 0x1c, 4, "BASE_ADDRESS_3" },
 231   {       0, 0x20, 4, "BASE_ADDRESS_4" },
 232   {       0, 0x24, 4, "BASE_ADDRESS_5" },
 233   {       0, 0x28, 4, "CARDBUS_CIS" },
 234   {       0, 0x2c, 2, "SUBSYSTEM_VENDOR_ID" },
 235   {       0, 0x2e, 2, "SUBSYSTEM_ID" },
 236   {       0, 0x30, 4, "ROM_ADDRESS" },
 237   {       0, 0x3c, 1, "INTERRUPT_LINE" },
 238   {       0, 0x3d, 1, "INTERRUPT_PIN" },
 239   {       0, 0x3e, 1, "MIN_GNT" },
 240   {       0, 0x3f, 1, "MAX_LAT" },
 241   {       0, 0x18, 1, "PRIMARY_BUS" },
 242   {       0, 0x19, 1, "SECONDARY_BUS" },
 243   {       0, 0x1a, 1, "SUBORDINATE_BUS" },
 244   {       0, 0x1b, 1, "SEC_LATENCY_TIMER" },
 245   {       0, 0x1c, 1, "IO_BASE" },
 246   {       0, 0x1d, 1, "IO_LIMIT" },
 247   {       0, 0x1e, 2, "SEC_STATUS" },
 248   {       0, 0x20, 2, "MEMORY_BASE" },
 249   {       0, 0x22, 2, "MEMORY_LIMIT" },
 250   {       0, 0x24, 2, "PREF_MEMORY_BASE" },
 251   {       0, 0x26, 2, "PREF_MEMORY_LIMIT" },
 252   {       0, 0x28, 4, "PREF_BASE_UPPER32" },
 253   {       0, 0x2c, 4, "PREF_LIMIT_UPPER32" },
 254   {       0, 0x30, 2, "IO_BASE_UPPER16" },
 255   {       0, 0x32, 2, "IO_LIMIT_UPPER16" },
 256   {       0, 0x38, 4, "BRIDGE_ROM_ADDRESS" },
 257   {       0, 0x3e, 2, "BRIDGE_CONTROL" },
 258   {       0, 0x10, 4, "CB_CARDBUS_BASE" },
 259   {       0, 0x14, 2, "CB_CAPABILITIES" },
 260   {       0, 0x16, 2, "CB_SEC_STATUS" },
 261   {       0, 0x18, 1, "CB_BUS_NUMBER" },
 262   {       0, 0x19, 1, "CB_CARDBUS_NUMBER" },
 263   {       0, 0x1a, 1, "CB_SUBORDINATE_BUS" },
 264   {       0, 0x1b, 1, "CB_CARDBUS_LATENCY" },
 265   {       0, 0x1c, 4, "CB_MEMORY_BASE_0" },
 266   {       0, 0x20, 4, "CB_MEMORY_LIMIT_0" },
 267   {       0, 0x24, 4, "CB_MEMORY_BASE_1" },
 268   {       0, 0x28, 4, "CB_MEMORY_LIMIT_1" },
 269   {       0, 0x2c, 2, "CB_IO_BASE_0" },
 270   {       0, 0x2e, 2, "CB_IO_BASE_0_HI" },
 271   {       0, 0x30, 2, "CB_IO_LIMIT_0" },
 272   {       0, 0x32, 2, "CB_IO_LIMIT_0_HI" },
 273   {       0, 0x34, 2, "CB_IO_BASE_1" },
 274   {       0, 0x36, 2, "CB_IO_BASE_1_HI" },
 275   {       0, 0x38, 2, "CB_IO_LIMIT_1" },
 276   {       0, 0x3a, 2, "CB_IO_LIMIT_1_HI" },
 277   {       0, 0x40, 2, "CB_SUBSYSTEM_VENDOR_ID" },
 278   {       0, 0x42, 2, "CB_SUBSYSTEM_ID" },
 279   {       0, 0x44, 4, "CB_LEGACY_MODE_BASE" },
 280   { 0x10001,    0, 0, "CAP_PM" },
 281   { 0x10002,    0, 0, "CAP_AGP" },
 282   { 0x10003,    0, 0, "CAP_VPD" },
 283   { 0x10004,    0, 0, "CAP_SLOTID" },
 284   { 0x10005,    0, 0, "CAP_MSI" },
 285   { 0x10006,    0, 0, "CAP_CHSWP" },
 286   { 0x10007,    0, 0, "CAP_PCIX" },
 287   { 0x10008,    0, 0, "CAP_HT" },
 288   { 0x10009,    0, 0, "CAP_VNDR" },
 289   { 0x1000a,    0, 0, "CAP_DBG" },
 290   { 0x1000b,    0, 0, "CAP_CCRC" },
 291   { 0x1000c,    0, 0, "CAP_HOTPLUG" },
 292   { 0x1000d,    0, 0, "CAP_SSVID" },
 293   { 0x1000e,    0, 0, "CAP_AGP3" },
 294   { 0x1000f,    0, 0, "CAP_SECURE" },
 295   { 0x10010,    0, 0, "CAP_EXP" },
 296   { 0x10011,    0, 0, "CAP_MSIX" },
 297   { 0x10012,    0, 0, "CAP_SATA" },
 298   { 0x10013,    0, 0, "CAP_AF" },
 299   { 0x20001,    0, 0, "ECAP_AER" },
 300   { 0x20002,    0, 0, "ECAP_VC" },
 301   { 0x20003,    0, 0, "ECAP_DSN" },
 302   { 0x20004,    0, 0, "ECAP_PB" },
 303   { 0x20005,    0, 0, "ECAP_RCLINK" },
 304   { 0x20006,    0, 0, "ECAP_RCILINK" },
 305   { 0x20007,    0, 0, "ECAP_RCECOLL" },
 306   { 0x20008,    0, 0, "ECAP_MFVC" },
 307   { 0x2000a,    0, 0, "ECAP_RBCB" },
 308   { 0x2000b,    0, 0, "ECAP_VNDR" },
 309   { 0x2000d,    0, 0, "ECAP_ACS" },
 310   { 0x2000e,    0, 0, "ECAP_ARI" },
 311   { 0x2000f,    0, 0, "ECAP_ATS" },
 312   { 0x20010,    0, 0, "ECAP_SRIOV" },
 313   { 0x2001d,    0, 0, "ECAP_DPC" },
 314   {       0,    0, 0, NULL }
 315 };
 316
 317 static void
 318 dump_registers(void)
 319 {
 320   const struct reg_name *r;
 321
 322   printf("cap pos w name\n");
 323   for (r = pci_reg_names; r->name; r++)
 324     {
 325       if (r->cap >= 0x20000)
 326         printf("%04x", r->cap - 0x20000);
 327       else if (r->cap)
 328         printf("  %02x", r->cap - 0x10000);
 329       else
 330         printf("    ");
 331       printf(" %02x %c %s\n", r->offset, "-BW?L"[r->width], r->name);
 332     }
 333 }
 334
 335 static void NONRET
 336 usage(void)
 337 {
 338   fprintf(stderr,
 339 "Usage: setpci [<options>] (<device>+ <reg>[=<values>]*)*\n"
 340 "\n"
 341 "General options:\n"
 342 "-f\t\tDon't complain if there's nothing to do\n"
 343 "-v\t\tBe verbose\n"
 344 "-D\t\tList changes, don't commit them\n"
 345 "--dumpregs\tDump all known register names and exit\n"
 346 "\n"
 347 "PCI access options:\n"
 348 GENERIC_HELP
 349 "\n"
 350 "Setting commands:\n"
 351 "<device>:\t-s [[[<domain>]:][<bus>]:][<slot>][.[<func>]]\n"
 352 "\t\t-d [<vendor>]:[<device>]\n"
 353 "<reg>:\t\t<base>[+<offset>][.(B|W|L)][@<number>]\n"
 354 "<base>:\t\t<address>\n"
 355 "\t\t<named-register>\n"
 356 "\t\t[E]CAP_<capability-name>\n"
 357 "\t\t[E]CAP<capability-number>\n"
 358 "<values>:\t<value>[,<value>...]\n"
 359 "<value>:\t<hex>\n"
 360 "\t\t<hex>:<mask>\n");
 361   exit(0);
 362 }
 363
 364 static void NONRET PCI_PRINTF(1,2)
 365 parse_err(const char *msg, ...)
 366 {
 367   va_list args;
 368   va_start(args, msg);
 369   fprintf(stderr, "setpci: ");
 370   vfprintf(stderr, msg, args);
 371   fprintf(stderr, ".\nTry `setpci --help' for more information.\n");
 372   exit(1);
 373 }
 374
 375 static int
 376 parse_options(int argc, char **argv)
 377 {
 378   const char opts[] = GENERIC_OPTIONS;
 379   int i=1;
 380
 381   if (argc == 2)
 382     {
 383       if (!strcmp(argv[1], "--help"))
 384         usage();
 385       if (!strcmp(argv[1], "--version"))
 386         {
 387           puts("setpci version " PCIUTILS_VERSION);
 388           exit(0);
 389         }
 390       if (!strcmp(argv[1], "--dumpregs"))
 391         {
 392           dump_registers();
 393           exit(0);
 394         }
 395     }
 396
 397   while (i < argc && argv[i][0] == '-')
 398     {
 399       char *c = argv[i++] + 1;
 400       char *d = c;
 401       char *e;
 402       while (*c)
 403         switch (*c)
 404           {
 405           case 0:
 406             break;
 407           case 'v':
 408             verbose++;
 409             c++;
 410             break;
 411           case 'f':
 412             force++;
 413             c++;
 414             break;
 415           case 'D':
 416             demo_mode++;
 417             c++;
 418             break;
 419           default:
 420             if (e = strchr(opts, *c))
 421               {
 422                 char *arg;
 423                 c++;
 424                 if (e[1] == ':')
 425                   {
 426                     if (*c)
 427                       arg = c;
 428                     else if (i < argc)
 429                       arg = argv[i++];
 430                     else
 431                       parse_err("Option -%c requires an argument", *e);
 432                     c = "";
 433                   }
 434                 else
 435                   arg = NULL;
 436                 if (!parse_generic_option(*e, pacc, arg))
 437                   parse_err("Unable to parse option -%c", *e);
 438               }
 439             else
 440               {
 441                 if (c != d)
 442                   parse_err("Invalid or misplaced option -%c", *c);
 443                 return i-1;
 444               }
 445           }
 446     }
 447
 448   return i;
 449 }
 450
 451 static int parse_filter(int argc, char **argv, int i, struct pci_filter *filter)
 452 {
 453   char *c = argv[i++];
 454   char *d;
 455
 456   if (!c[1] || !strchr("sd", c[1]))
 457     parse_err("Invalid option -%c", c[1]);
 458   if (c[2])
 459     d = (c[2] == '=') ? c+3 : c+2;
 460   else if (i < argc)
 461     d = argv[i++];
 462   else
 463     parse_err("Option -%c requires an argument", c[1]);
 464   switch (c[1])
 465     {
 466     case 's':
 467       if (d = pci_filter_parse_slot(filter, d))
 468         parse_err("Unable to parse filter -s %s", d);
 469       break;
 470     case 'd':
 471       if (d = pci_filter_parse_id(filter, d))
 472         parse_err("Unable to parse filter -d %s", d);
 473       break;
 474     default:
 475       parse_err("Unknown filter option -%c", c[1]);
 476     }
 477
 478   return i;
 479 }
 480
 481 static const struct reg_name *parse_reg_name(char *name)
 482 {
 483   const struct reg_name *r;
 484
 485   for (r = pci_reg_names; r->name; r++)
 486     if (!strcasecmp(r->name, name))
 487       return r;
 488   return NULL;
 489 }
 490
 491 static int parse_x32(char *c, char **stopp, unsigned int *resp)
 492 {
 493   char *stop;
 494   unsigned long int l;
 495
 496   if (!*c)
 497     return -1;
 498   errno = 0;
 499   l = strtoul(c, &stop, 16);
 500   if (errno)
 501     return -1;
 502   if ((l & ~0U) != l)
 503     return -1;
 504   *resp = l;
 505   if (*stop)
 506     {
 507       if (stopp)
 508         *stopp = stop;
 509       return 0;
 510     }
 511   else
 512     {
 513       if (stopp)
 514         *stopp = NULL;
 515       return 1;
 516     }
 517 }
 518
 519 static void parse_register(struct op *op, char *base)
 520 {
 521   const struct reg_name *r;
 522   unsigned int cap;
 523
 524   op->cap_type = op->cap_id = 0;
 525   if (parse_x32(base, NULL, &op->addr) > 0)
 526     return;
 527   else if (r = parse_reg_name(base))
 528     {
 529       switch (r->cap & 0xff0000)
 530         {
 531         case 0x10000:
 532           op->cap_type = PCI_CAP_NORMAL;
 533           break;
 534         case 0x20000:
 535           op->cap_type = PCI_CAP_EXTENDED;
 536           break;
 537         }
 538       op->cap_id = r->cap & 0xffff;
 539       op->addr = r->offset;
 540       if (r->width && !op->width)
 541         op->width = r->width;
 542       return;
 543     }
 544   else if (!strncasecmp(base, "CAP", 3))
 545     {
 546       if (parse_x32(base+3, NULL, &cap) > 0 && cap < 0x100)
 547         {
 548           op->cap_type = PCI_CAP_NORMAL;
 549           op->cap_id = cap;
 550           op->addr = 0;
 551           return;
 552         }
 553     }
 554   else if (!strncasecmp(base, "ECAP", 4))
 555     {
 556       if (parse_x32(base+4, NULL, &cap) > 0 && cap < 0x1000)
 557         {
 558           op->cap_type = PCI_CAP_EXTENDED;
 559           op->cap_id = cap;
 560           op->addr = 0;
 561           return;
 562         }
 563     }
 564   parse_err("Unknown register \"%s\"", base);
 565 }
 566
 567 static void parse_op(char *c, struct pci_dev **selected_devices)
 568 {
 569   char *base, *offset, *width, *value, *number;
 570   char *e, *f;
 571   int n, j;
 572   struct op *op;
 573
 574   /* Split the argument */
 575   base = xstrdup(c);
 576   if (value = strchr(base, '='))
 577     *value++ = 0;
 578   if (number = strchr(base, '@'))
 579     *number++ = 0;
 580   if (width = strchr(base, '.'))
 581     *width++ = 0;
 582   if (offset = strchr(base, '+'))
 583     *offset++ = 0;
 584
 585   /* Look for setting of values and count how many */
 586   n = 0;
 587   if (value)
 588     {
 589       if (!*value)
 590         parse_err("Missing value");
 591       n++;
 592       for (e=value; *e; e++)
 593         if (*e == ',')
 594           n++;
 595     }
 596
 597   /* Allocate the operation */
 598   op = xmalloc(sizeof(struct op) + n*sizeof(struct value));
 599   op->dev_vector = selected_devices;
 600   op->num_values = n;
 601
 602   /* What is the width suffix? */
 603   if (width)
 604     {
 605       if (width[1])
 606         parse_err("Invalid width \"%s\"", width);
 607       switch (*width & 0xdf)
 608         {
 609         case 'B':
 610           op->width = 1; break;
 611         case 'W':
 612           op->width = 2; break;
 613         case 'L':
 614           op->width = 4; break;
 615         default:
 616           parse_err("Invalid width \"%c\"", *width);
 617         }
 618     }
 619   else
 620     op->width = 0;
 621
 622   /* Check which n-th capability of the same id we want */
 623   if (number)
 624     {
 625       unsigned int num;
 626       if (parse_x32(number, NULL, &num) <= 0 || (int) num < 0)
 627           parse_err("Invalid number \"%s\"", number);
 628       op->number = num;
 629
 630     }
 631   else
 632       op->number = 0;
 633
 634   /* Find the register */
 635   parse_register(op, base);
 636   if (!op->width)
 637     parse_err("Missing width");
 638
 639   /* Add offset */
 640   if (offset)
 641     {
 642       unsigned int off;
 643       if (parse_x32(offset, NULL, &off) <= 0 || off >= 0x1000)
 644         parse_err("Invalid offset \"%s\"", offset);
 645       op->addr += off;
 646     }
 647
 648   /* Check range */
 649   if (op->addr >= 0x1000 || op->addr + op->width*(n ? n : 1) > 0x1000)
 650     parse_err("Register number %02x out of range", op->addr);
 651   if (op->addr & (op->width - 1))
 652     parse_err("Unaligned register address %02x", op->addr);
 653
 654   /* Parse the values */
 655   for (j=0; j<n; j++)
 656     {
 657       unsigned int ll, lim;
 658       e = strchr(value, ',');
 659       if (e)
 660         *e++ = 0;
 661       if (parse_x32(value, &f, &ll) < 0 || f && *f != ':')
 662         parse_err("Invalid value \"%s\"", value);
 663       lim = max_values[op->width];
 664       if (ll > lim && ll < ~0U - lim)
 665         parse_err("Value \"%s\" is out of range", value);
 666       op->values[j].value = ll;
 667       if (f && *f == ':')
 668         {
 669           if (parse_x32(f+1, NULL, &ll) <= 0)
 670             parse_err("Invalid mask \"%s\"", f+1);
 671           if (ll > lim && ll < ~0U - lim)
 672             parse_err("Mask \"%s\" is out of range", f+1);
 673           op->values[j].mask = ll;
 674           op->values[j].value &= ll;
 675         }
 676       else
 677         op->values[j].mask = ~0U;
 678       value = e;
 679     }
 680
 681   *last_op = op;
 682   last_op = &op->next;
 683   op->next = NULL;
 684 }
 685
 686 static void parse_ops(int argc, char **argv, int i)
 687 {
 688   enum { STATE_INIT, STATE_GOT_FILTER, STATE_GOT_OP } state = STATE_INIT;
 689   struct pci_filter filter;
 690   struct pci_dev **selected_devices = NULL;
 691
 692   while (i < argc)
 693     {
 694       char *c = argv[i++];
 695
 696       if (*c == '-')
 697         {
 698           if (state != STATE_GOT_FILTER)
 699             pci_filter_init(pacc, &filter);
 700           i = parse_filter(argc, argv, i-1, &filter);
 701           state = STATE_GOT_FILTER;
 702         }
 703       else
 704         {
 705           if (state == STATE_INIT)
 706             parse_err("Filter specification expected");
 707           if (state == STATE_GOT_FILTER)
 708             selected_devices = select_devices(&filter);
 709           if (!selected_devices[0] && !force)
 710             fprintf(stderr, "setpci: Warning: No devices selected for \"%s\".\n", c);
 711           parse_op(c, selected_devices);
 712           state = STATE_GOT_OP;
 713         }
 714     }
 715   if (state == STATE_INIT)
 716     parse_err("No operation specified");
 717 }
 718
 719 int
 720 main(int argc, char **argv)
 721 {
 722   int i;
 723
 724   pacc = pci_alloc();
 725   pacc->error = die;
 726   i = parse_options(argc, argv);
 727
 728   pci_init(pacc);
 729   pci_scan_bus(pacc);
 730
 731   parse_ops(argc, argv, i);
 732   scan_ops(first_op);
 733   execute(first_op);
 734
 735   return 0;
 736 }