pciconf.c revision 188018
1130860Srik/* 2130860Srik * Copyright 1996 Massachusetts Institute of Technology 3123159Simp * 423462Sjmg * Permission to use, copy, modify, and distribute this software and 5123159Simp * its documentation for any purpose and without fee is hereby 6123159Simp * granted, provided that both the above copyright notice and this 7123159Simp * permission notice appear in all copies, that both the above 8123159Simp * copyright notice and this permission notice appear in all 9123159Simp * supporting documentation, and that the name of M.I.T. not be used 10123159Simp * in advertising or publicity pertaining to distribution of the 11123159Simp * software without specific, written prior permission. M.I.T. makes 12123159Simp * no representations about the suitability of this software for any 13130860Srik * purpose. It is provided "as is" without express or implied 1450476Speter * warranty. 1523462Sjmg * 16358804Semaste * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS 17123943Sru * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, 1879538Sru * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 1920782Smpp * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT 2060442Sphantom * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21148145Strhodes * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2268854Sru * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 23151046Strhodes * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24152569Sru * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 25148220Strhodes * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 26148145Strhodes * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27123159Simp * SUCH DAMAGE. 28148145Strhodes */ 29152569Sru 30151046Strhodes#ifndef lint 31151046Strhodesstatic const char rcsid[] = 32148145Strhodes "$FreeBSD: head/usr.sbin/pciconf/pciconf.c 188018 2009-02-02 19:54:16Z jhb $"; 33148145Strhodes#endif /* not lint */ 34148145Strhodes 35148145Strhodes#include <sys/types.h> 3620782Smpp#include <sys/fcntl.h> 37123159Simp 38123159Simp#include <ctype.h> 39123159Simp#include <err.h> 40123159Simp#include <inttypes.h> 41123159Simp#include <stdlib.h> 4284877Syokota#include <stdio.h> 4384877Syokota#include <string.h> 4484877Syokota#include <unistd.h> 4584877Syokota#include <sys/pciio.h> 4684877Syokota#include <sys/queue.h> 4784877Syokota 48358804Semaste#include <dev/pci/pcireg.h> 49358804Semaste 50358804Semaste#include "pathnames.h" 51358804Semaste#include "pciconf.h" 52358804Semaste 53358804Semastestruct pci_device_info 54123159Simp{ 55123159Simp TAILQ_ENTRY(pci_device_info) link; 56123159Simp int id; 57123159Simp char *desc; 58123159Simp}; 59130582Sru 60123159Simpstruct pci_vendor_info 61130582Sru{ 62130582Sru TAILQ_ENTRY(pci_vendor_info) link; 63130582Sru TAILQ_HEAD(,pci_device_info) devs; 64123159Simp int id; 65123159Simp char *desc; 66123159Simp}; 67123159Simp 68126499SbruefferTAILQ_HEAD(,pci_vendor_info) pci_vendors; 69126499Sbrueffer 70123159Simpstatic void list_bars(int fd, struct pci_conf *p); 71123159Simpstatic void list_devs(int verbose, int bars, int caps); 7284877Syokotastatic void list_verbose(struct pci_conf *p); 73126897Sbruefferstatic const char *guess_class(struct pci_conf *p); 7484877Syokotastatic const char *guess_subclass(struct pci_conf *p); 75126499Sbruefferstatic int load_vendors(void); 76126897Sbruefferstatic void readit(const char *, const char *, int); 77123159Simpstatic void writeit(const char *, const char *, const char *, int); 78123159Simpstatic void chkattached(const char *, int); 7920782Smpp 80123159Simpstatic int exitstatus = 0; 81123159Simp 824910Swollmanstatic void 83123159Simpusage(void) 844910Swollman{ 85123159Simp fprintf(stderr, "%s\n%s\n%s\n%s\n", 864910Swollman "usage: pciconf -l [-bcv]", 8770466Sru " pciconf -a selector", 8820782Smpp " pciconf -r [-b | -h] selector addr[:addr2]", 8976175Sschweikh " pciconf -w [-b | -h] selector addr value"); 90123159Simp exit (1); 91123159Simp} 92126499Sbrueffer 93123159Simpint 94126499Sbrueffermain(int argc, char **argv) 95126499Sbrueffer{ 9620782Smpp int c; 97126499Sbrueffer int listmode, readmode, writemode, attachedmode, bars, caps, verbose; 98123159Simp int byte, isshort; 99123159Simp 100123159Simp listmode = readmode = writemode = attachedmode = bars = caps = verbose = byte = isshort = 0; 101123159Simp 102131752Ssimon while ((c = getopt(argc, argv, "abchlrwv")) != -1) { 103131752Ssimon switch(c) { 104131752Ssimon case 'a': 105131752Ssimon attachedmode = 1; 106131752Ssimon break; 107131752Ssimon 108131752Ssimon case 'b': 109131752Ssimon bars = 1; 110131752Ssimon byte = 1; 111131752Ssimon break; 112131752Ssimon 113131752Ssimon case 'c': 114131752Ssimon caps = 1; 115131752Ssimon break; 116131752Ssimon 117131752Ssimon case 'h': 118131752Ssimon isshort = 1; 119131752Ssimon break; 120131752Ssimon 121123159Simp case 'l': 122130860Srik listmode = 1; 123130860Srik break; 124130582Sru 125130582Sru case 'r': 126130582Sru readmode = 1; 127123159Simp break; 128123159Simp 12976175Sschweikh case 'w': 130123159Simp writemode = 1; 131123159Simp break; 132130860Srik 133130860Srik case 'v': 134130860Srik verbose = 1; 135126499Sbrueffer break; 136123159Simp 137123159Simp default: 138123159Simp usage(); 139123159Simp } 140123159Simp } 141123159Simp 142123159Simp if ((listmode && optind != argc) 143123159Simp || (writemode && optind + 3 != argc) 144123159Simp || (readmode && optind + 2 != argc) 145123159Simp || (attachedmode && optind + 1 != argc)) 146 usage(); 147 148 if (listmode) { 149 list_devs(verbose, bars, caps); 150 } else if (attachedmode) { 151 chkattached(argv[optind], 152 byte ? 1 : isshort ? 2 : 4); 153 } else if (readmode) { 154 readit(argv[optind], argv[optind + 1], 155 byte ? 1 : isshort ? 2 : 4); 156 } else if (writemode) { 157 writeit(argv[optind], argv[optind + 1], argv[optind + 2], 158 byte ? 1 : isshort ? 2 : 4); 159 } else { 160 usage(); 161 } 162 163 return exitstatus; 164} 165 166static void 167list_devs(int verbose, int bars, int caps) 168{ 169 int fd; 170 struct pci_conf_io pc; 171 struct pci_conf conf[255], *p; 172 int none_count = 0; 173 174 if (verbose) 175 load_vendors(); 176 177 fd = open(_PATH_DEVPCI, caps ? O_RDWR : O_RDONLY, 0); 178 if (fd < 0) 179 err(1, "%s", _PATH_DEVPCI); 180 181 bzero(&pc, sizeof(struct pci_conf_io)); 182 pc.match_buf_len = sizeof(conf); 183 pc.matches = conf; 184 185 do { 186 if (ioctl(fd, PCIOCGETCONF, &pc) == -1) 187 err(1, "ioctl(PCIOCGETCONF)"); 188 189 /* 190 * 255 entries should be more than enough for most people, 191 * but if someone has more devices, and then changes things 192 * around between ioctls, we'll do the cheezy thing and 193 * just bail. The alternative would be to go back to the 194 * beginning of the list, and print things twice, which may 195 * not be desireable. 196 */ 197 if (pc.status == PCI_GETCONF_LIST_CHANGED) { 198 warnx("PCI device list changed, please try again"); 199 exitstatus = 1; 200 close(fd); 201 return; 202 } else if (pc.status == PCI_GETCONF_ERROR) { 203 warnx("error returned from PCIOCGETCONF ioctl"); 204 exitstatus = 1; 205 close(fd); 206 return; 207 } 208 for (p = conf; p < &conf[pc.num_matches]; p++) { 209 printf("%s%d@pci%d:%d:%d:%d:\tclass=0x%06x card=0x%08x " 210 "chip=0x%08x rev=0x%02x hdr=0x%02x\n", 211 (p->pd_name && *p->pd_name) ? p->pd_name : 212 "none", 213 (p->pd_name && *p->pd_name) ? (int)p->pd_unit : 214 none_count++, p->pc_sel.pc_domain, 215 p->pc_sel.pc_bus, p->pc_sel.pc_dev, 216 p->pc_sel.pc_func, (p->pc_class << 16) | 217 (p->pc_subclass << 8) | p->pc_progif, 218 (p->pc_subdevice << 16) | p->pc_subvendor, 219 (p->pc_device << 16) | p->pc_vendor, 220 p->pc_revid, p->pc_hdr); 221 if (verbose) 222 list_verbose(p); 223 if (bars) 224 list_bars(fd, p); 225 if (caps) 226 list_caps(fd, p); 227 } 228 } while (pc.status == PCI_GETCONF_MORE_DEVS); 229 230 close(fd); 231} 232 233static void 234list_bars(int fd, struct pci_conf *p) 235{ 236 struct pci_bar_io bar; 237 uint64_t base; 238 const char *type; 239 int i, range, max; 240 241 switch (p->pc_hdr & PCIM_HDRTYPE) { 242 case PCIM_HDRTYPE_NORMAL: 243 max = PCIR_MAX_BAR_0; 244 break; 245 case PCIM_HDRTYPE_BRIDGE: 246 max = PCIR_MAX_BAR_1; 247 break; 248 case PCIM_HDRTYPE_CARDBUS: 249 max = PCIR_MAX_BAR_2; 250 break; 251 default: 252 return; 253 } 254 255 for (i = 0; i <= max; i++) { 256 bar.pbi_sel = p->pc_sel; 257 bar.pbi_reg = PCIR_BAR(i); 258 if (ioctl(fd, PCIOCGETBAR, &bar) < 0) 259 continue; 260 if (PCI_BAR_IO(bar.pbi_base)) { 261 type = "I/O Port"; 262 range = 32; 263 base = bar.pbi_base & PCIM_BAR_IO_BASE; 264 } else { 265 if (bar.pbi_base & PCIM_BAR_MEM_PREFETCH) 266 type = "Prefetchable Memory"; 267 else 268 type = "Memory"; 269 switch (bar.pbi_base & PCIM_BAR_MEM_TYPE) { 270 case PCIM_BAR_MEM_32: 271 range = 32; 272 break; 273 case PCIM_BAR_MEM_1MB: 274 range = 20; 275 break; 276 case PCIM_BAR_MEM_64: 277 range = 64; 278 break; 279 default: 280 range = -1; 281 } 282 base = bar.pbi_base & ~((uint64_t)0xf); 283 } 284 printf(" bar [%02x] = type %s, range %2d, base %#jx, ", 285 PCIR_BAR(i), type, range, (uintmax_t)base); 286 printf("size %2d, %s\n", (int)bar.pbi_length, 287 bar.pbi_enabled ? "enabled" : "disabled"); 288 } 289} 290 291static void 292list_verbose(struct pci_conf *p) 293{ 294 struct pci_vendor_info *vi; 295 struct pci_device_info *di; 296 const char *dp; 297 298 TAILQ_FOREACH(vi, &pci_vendors, link) { 299 if (vi->id == p->pc_vendor) { 300 printf(" vendor = '%s'\n", vi->desc); 301 break; 302 } 303 } 304 if (vi == NULL) { 305 di = NULL; 306 } else { 307 TAILQ_FOREACH(di, &vi->devs, link) { 308 if (di->id == p->pc_device) { 309 printf(" device = '%s'\n", di->desc); 310 break; 311 } 312 } 313 } 314 if ((dp = guess_class(p)) != NULL) 315 printf(" class = %s\n", dp); 316 if ((dp = guess_subclass(p)) != NULL) 317 printf(" subclass = %s\n", dp); 318} 319 320/* 321 * This is a direct cut-and-paste from the table in sys/dev/pci/pci.c. 322 */ 323static struct 324{ 325 int class; 326 int subclass; 327 const char *desc; 328} pci_nomatch_tab[] = { 329 {PCIC_OLD, -1, "old"}, 330 {PCIC_OLD, PCIS_OLD_NONVGA, "non-VGA display device"}, 331 {PCIC_OLD, PCIS_OLD_VGA, "VGA-compatible display device"}, 332 {PCIC_STORAGE, -1, "mass storage"}, 333 {PCIC_STORAGE, PCIS_STORAGE_SCSI, "SCSI"}, 334 {PCIC_STORAGE, PCIS_STORAGE_IDE, "ATA"}, 335 {PCIC_STORAGE, PCIS_STORAGE_FLOPPY, "floppy disk"}, 336 {PCIC_STORAGE, PCIS_STORAGE_IPI, "IPI"}, 337 {PCIC_STORAGE, PCIS_STORAGE_RAID, "RAID"}, 338 {PCIC_STORAGE, PCIS_STORAGE_ATA_ADMA, "ATA (ADMA)"}, 339 {PCIC_STORAGE, PCIS_STORAGE_SATA, "SATA"}, 340 {PCIC_STORAGE, PCIS_STORAGE_SAS, "SAS"}, 341 {PCIC_NETWORK, -1, "network"}, 342 {PCIC_NETWORK, PCIS_NETWORK_ETHERNET, "ethernet"}, 343 {PCIC_NETWORK, PCIS_NETWORK_TOKENRING, "token ring"}, 344 {PCIC_NETWORK, PCIS_NETWORK_FDDI, "fddi"}, 345 {PCIC_NETWORK, PCIS_NETWORK_ATM, "ATM"}, 346 {PCIC_NETWORK, PCIS_NETWORK_ISDN, "ISDN"}, 347 {PCIC_DISPLAY, -1, "display"}, 348 {PCIC_DISPLAY, PCIS_DISPLAY_VGA, "VGA"}, 349 {PCIC_DISPLAY, PCIS_DISPLAY_XGA, "XGA"}, 350 {PCIC_DISPLAY, PCIS_DISPLAY_3D, "3D"}, 351 {PCIC_MULTIMEDIA, -1, "multimedia"}, 352 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_VIDEO, "video"}, 353 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_AUDIO, "audio"}, 354 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_TELE, "telephony"}, 355 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_HDA, "HDA"}, 356 {PCIC_MEMORY, -1, "memory"}, 357 {PCIC_MEMORY, PCIS_MEMORY_RAM, "RAM"}, 358 {PCIC_MEMORY, PCIS_MEMORY_FLASH, "flash"}, 359 {PCIC_BRIDGE, -1, "bridge"}, 360 {PCIC_BRIDGE, PCIS_BRIDGE_HOST, "HOST-PCI"}, 361 {PCIC_BRIDGE, PCIS_BRIDGE_ISA, "PCI-ISA"}, 362 {PCIC_BRIDGE, PCIS_BRIDGE_EISA, "PCI-EISA"}, 363 {PCIC_BRIDGE, PCIS_BRIDGE_MCA, "PCI-MCA"}, 364 {PCIC_BRIDGE, PCIS_BRIDGE_PCI, "PCI-PCI"}, 365 {PCIC_BRIDGE, PCIS_BRIDGE_PCMCIA, "PCI-PCMCIA"}, 366 {PCIC_BRIDGE, PCIS_BRIDGE_NUBUS, "PCI-NuBus"}, 367 {PCIC_BRIDGE, PCIS_BRIDGE_CARDBUS, "PCI-CardBus"}, 368 {PCIC_BRIDGE, PCIS_BRIDGE_RACEWAY, "PCI-RACEway"}, 369 {PCIC_SIMPLECOMM, -1, "simple comms"}, 370 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_UART, "UART"}, /* could detect 16550 */ 371 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_PAR, "parallel port"}, 372 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_MULSER, "multiport serial"}, 373 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_MODEM, "generic modem"}, 374 {PCIC_BASEPERIPH, -1, "base peripheral"}, 375 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_PIC, "interrupt controller"}, 376 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_DMA, "DMA controller"}, 377 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_TIMER, "timer"}, 378 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_RTC, "realtime clock"}, 379 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_PCIHOT, "PCI hot-plug controller"}, 380 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_SDHC, "SD host controller"}, 381 {PCIC_INPUTDEV, -1, "input device"}, 382 {PCIC_INPUTDEV, PCIS_INPUTDEV_KEYBOARD, "keyboard"}, 383 {PCIC_INPUTDEV, PCIS_INPUTDEV_DIGITIZER,"digitizer"}, 384 {PCIC_INPUTDEV, PCIS_INPUTDEV_MOUSE, "mouse"}, 385 {PCIC_INPUTDEV, PCIS_INPUTDEV_SCANNER, "scanner"}, 386 {PCIC_INPUTDEV, PCIS_INPUTDEV_GAMEPORT, "gameport"}, 387 {PCIC_DOCKING, -1, "docking station"}, 388 {PCIC_PROCESSOR, -1, "processor"}, 389 {PCIC_SERIALBUS, -1, "serial bus"}, 390 {PCIC_SERIALBUS, PCIS_SERIALBUS_FW, "FireWire"}, 391 {PCIC_SERIALBUS, PCIS_SERIALBUS_ACCESS, "AccessBus"}, 392 {PCIC_SERIALBUS, PCIS_SERIALBUS_SSA, "SSA"}, 393 {PCIC_SERIALBUS, PCIS_SERIALBUS_USB, "USB"}, 394 {PCIC_SERIALBUS, PCIS_SERIALBUS_FC, "Fibre Channel"}, 395 {PCIC_SERIALBUS, PCIS_SERIALBUS_SMBUS, "SMBus"}, 396 {PCIC_WIRELESS, -1, "wireless controller"}, 397 {PCIC_WIRELESS, PCIS_WIRELESS_IRDA, "iRDA"}, 398 {PCIC_WIRELESS, PCIS_WIRELESS_IR, "IR"}, 399 {PCIC_WIRELESS, PCIS_WIRELESS_RF, "RF"}, 400 {PCIC_INTELLIIO, -1, "intelligent I/O controller"}, 401 {PCIC_INTELLIIO, PCIS_INTELLIIO_I2O, "I2O"}, 402 {PCIC_SATCOM, -1, "satellite communication"}, 403 {PCIC_SATCOM, PCIS_SATCOM_TV, "sat TV"}, 404 {PCIC_SATCOM, PCIS_SATCOM_AUDIO, "sat audio"}, 405 {PCIC_SATCOM, PCIS_SATCOM_VOICE, "sat voice"}, 406 {PCIC_SATCOM, PCIS_SATCOM_DATA, "sat data"}, 407 {PCIC_CRYPTO, -1, "encrypt/decrypt"}, 408 {PCIC_CRYPTO, PCIS_CRYPTO_NETCOMP, "network/computer crypto"}, 409 {PCIC_CRYPTO, PCIS_CRYPTO_NETCOMP, "entertainment crypto"}, 410 {PCIC_DASP, -1, "dasp"}, 411 {PCIC_DASP, PCIS_DASP_DPIO, "DPIO module"}, 412 {0, 0, NULL} 413}; 414 415static const char * 416guess_class(struct pci_conf *p) 417{ 418 int i; 419 420 for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) { 421 if (pci_nomatch_tab[i].class == p->pc_class) 422 return(pci_nomatch_tab[i].desc); 423 } 424 return(NULL); 425} 426 427static const char * 428guess_subclass(struct pci_conf *p) 429{ 430 int i; 431 432 for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) { 433 if ((pci_nomatch_tab[i].class == p->pc_class) && 434 (pci_nomatch_tab[i].subclass == p->pc_subclass)) 435 return(pci_nomatch_tab[i].desc); 436 } 437 return(NULL); 438} 439 440static int 441load_vendors(void) 442{ 443 const char *dbf; 444 FILE *db; 445 struct pci_vendor_info *cv; 446 struct pci_device_info *cd; 447 char buf[1024], str[1024]; 448 char *ch; 449 int id, error; 450 451 /* 452 * Locate the database and initialise. 453 */ 454 TAILQ_INIT(&pci_vendors); 455 if ((dbf = getenv("PCICONF_VENDOR_DATABASE")) == NULL) 456 dbf = _PATH_PCIVDB; 457 if ((db = fopen(dbf, "r")) == NULL) 458 return(1); 459 cv = NULL; 460 cd = NULL; 461 error = 0; 462 463 /* 464 * Scan input lines from the database 465 */ 466 for (;;) { 467 if (fgets(buf, sizeof(buf), db) == NULL) 468 break; 469 470 if ((ch = strchr(buf, '#')) != NULL) 471 *ch = '\0'; 472 ch = strchr(buf, '\0') - 1; 473 while (ch > buf && isspace(*ch)) 474 *ch-- = '\0'; 475 if (ch <= buf) 476 continue; 477 478 /* Can't handle subvendor / subdevice entries yet */ 479 if (buf[0] == '\t' && buf[1] == '\t') 480 continue; 481 482 /* Check for vendor entry */ 483 if (buf[0] != '\t' && sscanf(buf, "%04x %[^\n]", &id, str) == 2) { 484 if ((id == 0) || (strlen(str) < 1)) 485 continue; 486 if ((cv = malloc(sizeof(struct pci_vendor_info))) == NULL) { 487 warn("allocating vendor entry"); 488 error = 1; 489 break; 490 } 491 if ((cv->desc = strdup(str)) == NULL) { 492 free(cv); 493 warn("allocating vendor description"); 494 error = 1; 495 break; 496 } 497 cv->id = id; 498 TAILQ_INIT(&cv->devs); 499 TAILQ_INSERT_TAIL(&pci_vendors, cv, link); 500 continue; 501 } 502 503 /* Check for device entry */ 504 if (buf[0] == '\t' && sscanf(buf + 1, "%04x %[^\n]", &id, str) == 2) { 505 if ((id == 0) || (strlen(str) < 1)) 506 continue; 507 if (cv == NULL) { 508 warnx("device entry with no vendor!"); 509 continue; 510 } 511 if ((cd = malloc(sizeof(struct pci_device_info))) == NULL) { 512 warn("allocating device entry"); 513 error = 1; 514 break; 515 } 516 if ((cd->desc = strdup(str)) == NULL) { 517 free(cd); 518 warn("allocating device description"); 519 error = 1; 520 break; 521 } 522 cd->id = id; 523 TAILQ_INSERT_TAIL(&cv->devs, cd, link); 524 continue; 525 } 526 527 /* It's a comment or junk, ignore it */ 528 } 529 if (ferror(db)) 530 error = 1; 531 fclose(db); 532 533 return(error); 534} 535 536uint32_t 537read_config(int fd, struct pcisel *sel, long reg, int width) 538{ 539 struct pci_io pi; 540 541 pi.pi_sel = *sel; 542 pi.pi_reg = reg; 543 pi.pi_width = width; 544 545 if (ioctl(fd, PCIOCREAD, &pi) < 0) 546 err(1, "ioctl(PCIOCREAD)"); 547 548 return (pi.pi_data); 549} 550 551static struct pcisel 552getsel(const char *str) 553{ 554 char *ep = strchr(str, '@'); 555 char *epbase; 556 struct pcisel sel; 557 unsigned long selarr[4]; 558 int i; 559 560 if (ep == NULL) 561 ep = (char *)str; 562 else 563 ep++; 564 565 epbase = ep; 566 567 if (strncmp(ep, "pci", 3) == 0) { 568 ep += 3; 569 i = 0; 570 do { 571 selarr[i++] = strtoul(ep, &ep, 10); 572 } while ((*ep == ':' || *ep == '.') && *++ep != '\0' && i < 4); 573 574 if (i > 2) 575 sel.pc_func = selarr[--i]; 576 else 577 sel.pc_func = 0; 578 sel.pc_dev = selarr[--i]; 579 sel.pc_bus = selarr[--i]; 580 if (i > 0) 581 sel.pc_domain = selarr[--i]; 582 else 583 sel.pc_domain = 0; 584 } 585 if (*ep != '\x0' || ep == epbase) 586 errx(1, "cannot parse selector %s", str); 587 return sel; 588} 589 590static void 591readone(int fd, struct pcisel *sel, long reg, int width) 592{ 593 594 printf("%0*x", width*2, read_config(fd, sel, reg, width)); 595} 596 597static void 598readit(const char *name, const char *reg, int width) 599{ 600 long rstart; 601 long rend; 602 long r; 603 char *end; 604 int i; 605 int fd; 606 struct pcisel sel; 607 608 fd = open(_PATH_DEVPCI, O_RDWR, 0); 609 if (fd < 0) 610 err(1, "%s", _PATH_DEVPCI); 611 612 rend = rstart = strtol(reg, &end, 0); 613 if (end && *end == ':') { 614 end++; 615 rend = strtol(end, (char **) 0, 0); 616 } 617 sel = getsel(name); 618 for (i = 1, r = rstart; r <= rend; i++, r += width) { 619 readone(fd, &sel, r, width); 620 if (i && !(i % 8)) 621 putchar(' '); 622 putchar(i % (16/width) ? ' ' : '\n'); 623 } 624 if (i % (16/width) != 1) 625 putchar('\n'); 626 close(fd); 627} 628 629static void 630writeit(const char *name, const char *reg, const char *data, int width) 631{ 632 int fd; 633 struct pci_io pi; 634 635 pi.pi_sel = getsel(name); 636 pi.pi_reg = strtoul(reg, (char **)0, 0); /* XXX error check */ 637 pi.pi_width = width; 638 pi.pi_data = strtoul(data, (char **)0, 0); /* XXX error check */ 639 640 fd = open(_PATH_DEVPCI, O_RDWR, 0); 641 if (fd < 0) 642 err(1, "%s", _PATH_DEVPCI); 643 644 if (ioctl(fd, PCIOCWRITE, &pi) < 0) 645 err(1, "ioctl(PCIOCWRITE)"); 646} 647 648static void 649chkattached(const char *name, int width) 650{ 651 int fd; 652 struct pci_io pi; 653 654 pi.pi_sel = getsel(name); 655 pi.pi_reg = 0; 656 pi.pi_width = width; 657 pi.pi_data = 0; 658 659 fd = open(_PATH_DEVPCI, O_RDWR, 0); 660 if (fd < 0) 661 err(1, "%s", _PATH_DEVPCI); 662 663 if (ioctl(fd, PCIOCATTACHED, &pi) < 0) 664 err(1, "ioctl(PCIOCATTACHED)"); 665 666 exitstatus = pi.pi_data ? 0 : 2; /* exit(2), if NOT attached */ 667 printf("%s: %s%s\n", name, pi.pi_data == 0 ? "not " : "", "attached"); 668} 669