1 /*- 2 * Copyright (c) 1997, Stefan Esser <se@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include "opt_bus.h" /* XXX trim includes */ 31 #include "opt_compat.h" 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/malloc.h> 36 #include <sys/module.h> 37 #include <sys/linker.h> 38 #include <sys/fcntl.h> 39 #include <sys/conf.h> 40 #include <sys/kernel.h> 41 #include <sys/proc.h> 42 #include <sys/queue.h> 43 #include <sys/types.h> 44 45 #include <vm/vm.h> 46 #include <vm/pmap.h> 47 #include <vm/vm_extern.h> 48 49 #include <sys/bus.h> 50 #include <machine/bus.h> 51 #include <sys/rman.h> 52 #include <machine/resource.h> 53 54 #include <sys/pciio.h> 55 #include <dev/pci/pcireg.h> 56 #include <dev/pci/pcivar.h> 57 58 #include "pcib_if.h" 59 #include "pci_if.h" 60 61 /* 62 * This is the user interface to PCI configuration space. 63 */ 64 65 static d_open_t pci_open; 66 static d_close_t pci_close; 67 static int pci_conf_match(struct pci_match_conf *matches, int num_matches, 68 struct pci_conf *match_buf); 69 static d_ioctl_t pci_ioctl; 70 71 struct cdevsw pcicdev = { 72 .d_version = D_VERSION, 73 .d_flags = D_NEEDGIANT, 74 .d_open = pci_open, 75 .d_close = pci_close, 76 .d_ioctl = pci_ioctl, 77 .d_name = "pci", 78 }; 79 80 static int 81 pci_open(struct cdev *dev, int oflags, int devtype, struct thread *td) 82 { 83 int error; 84 85 if (oflags & FWRITE) { 86 error = securelevel_gt(td->td_ucred, 0); 87 if (error) 88 return (error); 89 } 90 91 return (0); 92 } 93 94 static int 95 pci_close(struct cdev *dev, int flag, int devtype, struct thread *td) 96 { 97 return 0; 98 } 99 100 /* 101 * Match a single pci_conf structure against an array of pci_match_conf 102 * structures. The first argument, 'matches', is an array of num_matches 103 * pci_match_conf structures. match_buf is a pointer to the pci_conf 104 * structure that will be compared to every entry in the matches array. 105 * This function returns 1 on failure, 0 on success. 106 */ 107 static int 108 pci_conf_match(struct pci_match_conf *matches, int num_matches, 109 struct pci_conf *match_buf) 110 { 111 int i; 112 113 if ((matches == NULL) || (match_buf == NULL) || (num_matches <= 0)) 114 return(1); 115 116 for (i = 0; i < num_matches; i++) { 117 /* 118 * I'm not sure why someone would do this...but... 119 */ 120 if (matches[i].flags == PCI_GETCONF_NO_MATCH) 121 continue; 122 123 /* 124 * Look at each of the match flags. If it's set, do the 125 * comparison. If the comparison fails, we don't have a 126 * match, go on to the next item if there is one. 127 */ 128 if (((matches[i].flags & PCI_GETCONF_MATCH_DOMAIN) != 0) 129 && (match_buf->pc_sel.pc_domain != 130 matches[i].pc_sel.pc_domain)) 131 continue; 132 133 if (((matches[i].flags & PCI_GETCONF_MATCH_BUS) != 0) 134 && (match_buf->pc_sel.pc_bus != matches[i].pc_sel.pc_bus)) 135 continue; 136 137 if (((matches[i].flags & PCI_GETCONF_MATCH_DEV) != 0) 138 && (match_buf->pc_sel.pc_dev != matches[i].pc_sel.pc_dev)) 139 continue; 140 141 if (((matches[i].flags & PCI_GETCONF_MATCH_FUNC) != 0) 142 && (match_buf->pc_sel.pc_func != matches[i].pc_sel.pc_func)) 143 continue; 144 145 if (((matches[i].flags & PCI_GETCONF_MATCH_VENDOR) != 0) 146 && (match_buf->pc_vendor != matches[i].pc_vendor)) 147 continue; 148 149 if (((matches[i].flags & PCI_GETCONF_MATCH_DEVICE) != 0) 150 && (match_buf->pc_device != matches[i].pc_device)) 151 continue; 152 153 if (((matches[i].flags & PCI_GETCONF_MATCH_CLASS) != 0) 154 && (match_buf->pc_class != matches[i].pc_class)) 155 continue; 156 157 if (((matches[i].flags & PCI_GETCONF_MATCH_UNIT) != 0) 158 && (match_buf->pd_unit != matches[i].pd_unit)) 159 continue; 160 161 if (((matches[i].flags & PCI_GETCONF_MATCH_NAME) != 0) 162 && (strncmp(matches[i].pd_name, match_buf->pd_name, 163 sizeof(match_buf->pd_name)) != 0)) 164 continue; 165 166 return(0); 167 } 168 169 return(1); 170 } 171 172 #if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 173 defined(COMPAT_FREEBSD6) 174 #define PRE7_COMPAT 175 176 typedef enum { 177 PCI_GETCONF_NO_MATCH_OLD = 0x00, 178 PCI_GETCONF_MATCH_BUS_OLD = 0x01, 179 PCI_GETCONF_MATCH_DEV_OLD = 0x02, 180 PCI_GETCONF_MATCH_FUNC_OLD = 0x04, 181 PCI_GETCONF_MATCH_NAME_OLD = 0x08, 182 PCI_GETCONF_MATCH_UNIT_OLD = 0x10, 183 PCI_GETCONF_MATCH_VENDOR_OLD = 0x20, 184 PCI_GETCONF_MATCH_DEVICE_OLD = 0x40, 185 PCI_GETCONF_MATCH_CLASS_OLD = 0x80 186 } pci_getconf_flags_old; 187 188 struct pcisel_old { 189 u_int8_t pc_bus; /* bus number */ 190 u_int8_t pc_dev; /* device on this bus */ 191 u_int8_t pc_func; /* function on this device */ 192 }; 193 194 struct pci_conf_old { 195 struct pcisel_old pc_sel; /* bus+slot+function */ 196 u_int8_t pc_hdr; /* PCI header type */ 197 u_int16_t pc_subvendor; /* card vendor ID */ 198 u_int16_t pc_subdevice; /* card device ID, assigned by 199 card vendor */ 200 u_int16_t pc_vendor; /* chip vendor ID */ 201 u_int16_t pc_device; /* chip device ID, assigned by 202 chip vendor */ 203 u_int8_t pc_class; /* chip PCI class */ 204 u_int8_t pc_subclass; /* chip PCI subclass */ 205 u_int8_t pc_progif; /* chip PCI programming interface */ 206 u_int8_t pc_revid; /* chip revision ID */ 207 char pd_name[PCI_MAXNAMELEN + 1]; /* device name */ 208 u_long pd_unit; /* device unit number */ 209 }; 210 211 struct pci_match_conf_old { 212 struct pcisel_old pc_sel; /* bus+slot+function */ 213 char pd_name[PCI_MAXNAMELEN + 1]; /* device name */ 214 u_long pd_unit; /* Unit number */ 215 u_int16_t pc_vendor; /* PCI Vendor ID */ 216 u_int16_t pc_device; /* PCI Device ID */ 217 u_int8_t pc_class; /* PCI class */ 218 pci_getconf_flags_old flags; /* Matching expression */ 219 }; 220 221 struct pci_io_old { 222 struct pcisel_old pi_sel; /* device to operate on */ 223 int pi_reg; /* configuration register to examine */ 224 int pi_width; /* width (in bytes) of read or write */ 225 u_int32_t pi_data; /* data to write or result of read */ 226 }; 227 228 #define PCIOCGETCONF_OLD _IOWR('p', 1, struct pci_conf_io) 229 #define PCIOCREAD_OLD _IOWR('p', 2, struct pci_io_old) 230 #define PCIOCWRITE_OLD _IOWR('p', 3, struct pci_io_old) 231 232 static int pci_conf_match_old(struct pci_match_conf_old *matches, 233 int num_matches, struct pci_conf *match_buf); 234 235 static int 236 pci_conf_match_old(struct pci_match_conf_old *matches, int num_matches, 237 struct pci_conf *match_buf) 238 { 239 int i; 240 241 if ((matches == NULL) || (match_buf == NULL) || (num_matches <= 0)) 242 return(1); 243 244 for (i = 0; i < num_matches; i++) { 245 if (match_buf->pc_sel.pc_domain != 0) 246 continue; 247 248 /* 249 * I'm not sure why someone would do this...but... 250 */ 251 if (matches[i].flags == PCI_GETCONF_NO_MATCH_OLD) 252 continue; 253 254 /* 255 * Look at each of the match flags. If it's set, do the 256 * comparison. If the comparison fails, we don't have a 257 * match, go on to the next item if there is one. 258 */ 259 if (((matches[i].flags & PCI_GETCONF_MATCH_BUS_OLD) != 0) 260 && (match_buf->pc_sel.pc_bus != matches[i].pc_sel.pc_bus)) 261 continue; 262 263 if (((matches[i].flags & PCI_GETCONF_MATCH_DEV_OLD) != 0) 264 && (match_buf->pc_sel.pc_dev != matches[i].pc_sel.pc_dev)) 265 continue; 266 267 if (((matches[i].flags & PCI_GETCONF_MATCH_FUNC_OLD) != 0) 268 && (match_buf->pc_sel.pc_func != matches[i].pc_sel.pc_func)) 269 continue; 270 271 if (((matches[i].flags & PCI_GETCONF_MATCH_VENDOR_OLD) != 0) 272 && (match_buf->pc_vendor != matches[i].pc_vendor)) 273 continue; 274 275 if (((matches[i].flags & PCI_GETCONF_MATCH_DEVICE_OLD) != 0) 276 && (match_buf->pc_device != matches[i].pc_device)) 277 continue; 278 279 if (((matches[i].flags & PCI_GETCONF_MATCH_CLASS_OLD) != 0) 280 && (match_buf->pc_class != matches[i].pc_class)) 281 continue; 282 283 if (((matches[i].flags & PCI_GETCONF_MATCH_UNIT_OLD) != 0) 284 && (match_buf->pd_unit != matches[i].pd_unit)) 285 continue; 286 287 if (((matches[i].flags & PCI_GETCONF_MATCH_NAME_OLD) != 0) 288 && (strncmp(matches[i].pd_name, match_buf->pd_name, 289 sizeof(match_buf->pd_name)) != 0)) 290 continue; 291 292 return(0); 293 } 294 295 return(1); 296 } 297 298 #endif 299 300 static int 301 pci_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 302 { 303 device_t pcidev, brdev; 304 void *confdata; 305 const char *name; 306 struct devlist *devlist_head; 307 struct pci_conf_io *cio; 308 struct pci_devinfo *dinfo; 309 struct pci_io *io; 310 struct pci_bar_io *bio; 311 struct pci_match_conf *pattern_buf; 312 struct pci_map *pm; 313 size_t confsz, iolen, pbufsz; 314 int error, ionum, i, num_patterns; 315 #ifdef PRE7_COMPAT 316 struct pci_conf_old conf_old; 317 struct pci_io iodata; 318 struct pci_io_old *io_old; 319 struct pci_match_conf_old *pattern_buf_old; 320 321 io_old = NULL; 322 pattern_buf_old = NULL; 323 324 if (!(flag & FWRITE) && cmd != PCIOCGETBAR && 325 cmd != PCIOCGETCONF && cmd != PCIOCGETCONF_OLD) 326 return EPERM; 327 #else 328 if (!(flag & FWRITE) && cmd != PCIOCGETBAR && cmd != PCIOCGETCONF) 329 return EPERM; 330 #endif 331 332 switch(cmd) { 333 #ifdef PRE7_COMPAT 334 case PCIOCGETCONF_OLD: 335 /* FALLTHROUGH */ 336 #endif 337 case PCIOCGETCONF: 338 cio = (struct pci_conf_io *)data; 339 340 pattern_buf = NULL; 341 num_patterns = 0; 342 dinfo = NULL; 343 344 cio->num_matches = 0; 345 346 /* 347 * If the user specified an offset into the device list, 348 * but the list has changed since they last called this 349 * ioctl, tell them that the list has changed. They will 350 * have to get the list from the beginning. 351 */ 352 if ((cio->offset != 0) 353 && (cio->generation != pci_generation)){ 354 cio->status = PCI_GETCONF_LIST_CHANGED; 355 error = 0; 356 break; 357 } 358 359 /* 360 * Check to see whether the user has asked for an offset 361 * past the end of our list. 362 */ 363 if (cio->offset >= pci_numdevs) { 364 cio->status = PCI_GETCONF_LAST_DEVICE; 365 error = 0; 366 break; 367 } 368 369 /* get the head of the device queue */ 370 devlist_head = &pci_devq; 371 372 /* 373 * Determine how much room we have for pci_conf structures. 374 * Round the user's buffer size down to the nearest 375 * multiple of sizeof(struct pci_conf) in case the user 376 * didn't specify a multiple of that size. 377 */ 378 #ifdef PRE7_COMPAT 379 if (cmd == PCIOCGETCONF_OLD) 380 confsz = sizeof(struct pci_conf_old); 381 else 382 #endif 383 confsz = sizeof(struct pci_conf); 384 iolen = min(cio->match_buf_len - (cio->match_buf_len % confsz), 385 pci_numdevs * confsz); 386 387 /* 388 * Since we know that iolen is a multiple of the size of 389 * the pciconf union, it's okay to do this. 390 */ 391 ionum = iolen / confsz; 392 393 /* 394 * If this test is true, the user wants the pci_conf 395 * structures returned to match the supplied entries. 396 */ 397 if ((cio->num_patterns > 0) && (cio->num_patterns < pci_numdevs) 398 && (cio->pat_buf_len > 0)) { 399 /* 400 * pat_buf_len needs to be: 401 * num_patterns * sizeof(struct pci_match_conf) 402 * While it is certainly possible the user just 403 * allocated a large buffer, but set the number of 404 * matches correctly, it is far more likely that 405 * their kernel doesn't match the userland utility 406 * they're using. It's also possible that the user 407 * forgot to initialize some variables. Yes, this 408 * may be overly picky, but I hazard to guess that 409 * it's far more likely to just catch folks that 410 * updated their kernel but not their userland. 411 */ 412 #ifdef PRE7_COMPAT 413 if (cmd == PCIOCGETCONF_OLD) 414 pbufsz = sizeof(struct pci_match_conf_old); 415 else 416 #endif 417 pbufsz = sizeof(struct pci_match_conf); 418 if (cio->num_patterns * pbufsz != cio->pat_buf_len) { 419 /* The user made a mistake, return an error. */ 420 cio->status = PCI_GETCONF_ERROR; 421 error = EINVAL; 422 break; 423 } 424 425 /* 426 * Allocate a buffer to hold the patterns. 427 */ 428 #ifdef PRE7_COMPAT 429 if (cmd == PCIOCGETCONF_OLD) { 430 pattern_buf_old = malloc(cio->pat_buf_len, 431 M_TEMP, M_WAITOK); 432 error = copyin(cio->patterns, 433 pattern_buf_old, cio->pat_buf_len); 434 } else 435 #endif 436 { 437 pattern_buf = malloc(cio->pat_buf_len, M_TEMP, 438 M_WAITOK); 439 error = copyin(cio->patterns, pattern_buf, 440 cio->pat_buf_len); 441 } 442 if (error != 0) { 443 error = EINVAL; 444 goto getconfexit; 445 } 446 num_patterns = cio->num_patterns; 447 } else if ((cio->num_patterns > 0) 448 || (cio->pat_buf_len > 0)) { 449 /* 450 * The user made a mistake, spit out an error. 451 */ 452 cio->status = PCI_GETCONF_ERROR; 453 error = EINVAL; 454 break; 455 } 456 457 /* 458 * Go through the list of devices and copy out the devices 459 * that match the user's criteria. 460 */ 461 for (cio->num_matches = 0, error = 0, i = 0, 462 dinfo = STAILQ_FIRST(devlist_head); 463 (dinfo != NULL) && (cio->num_matches < ionum) 464 && (error == 0) && (i < pci_numdevs) && (dinfo != NULL); 465 dinfo = STAILQ_NEXT(dinfo, pci_links), i++) { 466 467 if (i < cio->offset) 468 continue; 469 470 /* Populate pd_name and pd_unit */ 471 name = NULL; 472 if (dinfo->cfg.dev) 473 name = device_get_name(dinfo->cfg.dev); 474 if (name) { 475 strncpy(dinfo->conf.pd_name, name, 476 sizeof(dinfo->conf.pd_name)); 477 dinfo->conf.pd_name[PCI_MAXNAMELEN] = 0; 478 dinfo->conf.pd_unit = 479 device_get_unit(dinfo->cfg.dev); 480 } else { 481 dinfo->conf.pd_name[0] = '\0'; 482 dinfo->conf.pd_unit = 0; 483 } 484 485 #ifdef PRE7_COMPAT 486 if ((cmd == PCIOCGETCONF_OLD && 487 (pattern_buf_old == NULL || 488 pci_conf_match_old(pattern_buf_old, num_patterns, 489 &dinfo->conf) == 0)) || 490 (cmd == PCIOCGETCONF && 491 (pattern_buf == NULL || 492 pci_conf_match(pattern_buf, num_patterns, 493 &dinfo->conf) == 0))) { 494 #else 495 if (pattern_buf == NULL || 496 pci_conf_match(pattern_buf, num_patterns, 497 &dinfo->conf) == 0) { 498 #endif 499 /* 500 * If we've filled up the user's buffer, 501 * break out at this point. Since we've 502 * got a match here, we'll pick right back 503 * up at the matching entry. We can also 504 * tell the user that there are more matches 505 * left. 506 */ 507 if (cio->num_matches >= ionum) 508 break; 509 510 #ifdef PRE7_COMPAT 511 if (cmd == PCIOCGETCONF_OLD) { 512 conf_old.pc_sel.pc_bus = 513 dinfo->conf.pc_sel.pc_bus; 514 conf_old.pc_sel.pc_dev = 515 dinfo->conf.pc_sel.pc_dev; 516 conf_old.pc_sel.pc_func = 517 dinfo->conf.pc_sel.pc_func; 518 conf_old.pc_hdr = dinfo->conf.pc_hdr; 519 conf_old.pc_subvendor = 520 dinfo->conf.pc_subvendor; 521 conf_old.pc_subdevice = 522 dinfo->conf.pc_subdevice; 523 conf_old.pc_vendor = 524 dinfo->conf.pc_vendor; 525 conf_old.pc_device = 526 dinfo->conf.pc_device; 527 conf_old.pc_class = 528 dinfo->conf.pc_class; 529 conf_old.pc_subclass = 530 dinfo->conf.pc_subclass; 531 conf_old.pc_progif = 532 dinfo->conf.pc_progif; 533 conf_old.pc_revid = 534 dinfo->conf.pc_revid; 535 strncpy(conf_old.pd_name, 536 dinfo->conf.pd_name, 537 sizeof(conf_old.pd_name)); 538 conf_old.pd_name[PCI_MAXNAMELEN] = 0; 539 conf_old.pd_unit = 540 dinfo->conf.pd_unit; 541 confdata = &conf_old; 542 } else 543 #endif 544 confdata = &dinfo->conf; 545 /* Only if we can copy it out do we count it. */ 546 if (!(error = copyout(confdata, 547 (caddr_t)cio->matches + 548 confsz * cio->num_matches, confsz))) 549 cio->num_matches++; 550 } 551 } 552 553 /* 554 * Set the pointer into the list, so if the user is getting 555 * n records at a time, where n < pci_numdevs, 556 */ 557 cio->offset = i; 558 559 /* 560 * Set the generation, the user will need this if they make 561 * another ioctl call with offset != 0. 562 */ 563 cio->generation = pci_generation; 564 565 /* 566 * If this is the last device, inform the user so he won't 567 * bother asking for more devices. If dinfo isn't NULL, we 568 * know that there are more matches in the list because of 569 * the way the traversal is done. 570 */ 571 if (dinfo == NULL) 572 cio->status = PCI_GETCONF_LAST_DEVICE; 573 else 574 cio->status = PCI_GETCONF_MORE_DEVS; 575 576 getconfexit: 577 if (pattern_buf != NULL) 578 free(pattern_buf, M_TEMP); 579 #ifdef PRE7_COMPAT 580 if (pattern_buf_old != NULL) 581 free(pattern_buf_old, M_TEMP); 582 #endif 583 584 break; 585 586 #ifdef PRE7_COMPAT 587 case PCIOCREAD_OLD: 588 case PCIOCWRITE_OLD: 589 io_old = (struct pci_io_old *)data; 590 iodata.pi_sel.pc_domain = 0; 591 iodata.pi_sel.pc_bus = io_old->pi_sel.pc_bus; 592 iodata.pi_sel.pc_dev = io_old->pi_sel.pc_dev; 593 iodata.pi_sel.pc_func = io_old->pi_sel.pc_func; 594 iodata.pi_reg = io_old->pi_reg; 595 iodata.pi_width = io_old->pi_width; 596 iodata.pi_data = io_old->pi_data; 597 data = (caddr_t)&iodata; 598 /* FALLTHROUGH */ 599 #endif 600 case PCIOCREAD: 601 case PCIOCWRITE: 602 io = (struct pci_io *)data; 603 switch(io->pi_width) { 604 case 4: 605 case 2: 606 case 1: 607 /* Make sure register is not negative and aligned. */ 608 if (io->pi_reg < 0 || 609 io->pi_reg & (io->pi_width - 1)) { 610 error = EINVAL; 611 break; 612 } 613 /* 614 * Assume that the user-level bus number is 615 * in fact the physical PCI bus number. 616 * Look up the grandparent, i.e. the bridge device, 617 * so that we can issue configuration space cycles. 618 */ 619 pcidev = pci_find_dbsf(io->pi_sel.pc_domain, 620 io->pi_sel.pc_bus, io->pi_sel.pc_dev, 621 io->pi_sel.pc_func); 622 if (pcidev) { 623 brdev = device_get_parent( 624 device_get_parent(pcidev)); 625 626 #ifdef PRE7_COMPAT 627 if (cmd == PCIOCWRITE || cmd == PCIOCWRITE_OLD) 628 #else 629 if (cmd == PCIOCWRITE) 630 #endif 631 PCIB_WRITE_CONFIG(brdev, 632 io->pi_sel.pc_bus, 633 io->pi_sel.pc_dev, 634 io->pi_sel.pc_func, 635 io->pi_reg, 636 io->pi_data, 637 io->pi_width); 638 #ifdef PRE7_COMPAT 639 else if (cmd == PCIOCREAD_OLD) 640 io_old->pi_data = 641 PCIB_READ_CONFIG(brdev, 642 io->pi_sel.pc_bus, 643 io->pi_sel.pc_dev, 644 io->pi_sel.pc_func, 645 io->pi_reg, 646 io->pi_width); 647 #endif 648 else 649 io->pi_data = 650 PCIB_READ_CONFIG(brdev, 651 io->pi_sel.pc_bus, 652 io->pi_sel.pc_dev, 653 io->pi_sel.pc_func, 654 io->pi_reg, 655 io->pi_width); 656 error = 0; 657 } else { 658 #ifdef COMPAT_FREEBSD4 659 if (cmd == PCIOCREAD_OLD) { 660 io_old->pi_data = -1; 661 error = 0; 662 } else 663 #endif 664 error = ENODEV; 665 } 666 break; 667 default: 668 error = EINVAL; 669 break; 670 } 671 break; 672 673 case PCIOCGETBAR: 674 bio = (struct pci_bar_io *)data; 675 676 /* 677 * Assume that the user-level bus number is 678 * in fact the physical PCI bus number. 679 */ 680 pcidev = pci_find_dbsf(bio->pbi_sel.pc_domain, 681 bio->pbi_sel.pc_bus, bio->pbi_sel.pc_dev, 682 bio->pbi_sel.pc_func); 683 if (pcidev == NULL) { 684 error = ENODEV; 685 break; 686 } 687 pm = pci_find_bar(pcidev, bio->pbi_reg); 688 if (pm == NULL) { 689 error = EINVAL; 690 break; 691 } 692 bio->pbi_base = pm->pm_value; 693 bio->pbi_length = (pci_addr_t)1 << pm->pm_size; 694 bio->pbi_enabled = pci_bar_enabled(pcidev, pm); 695 error = 0; 696 break; 697 case PCIOCATTACHED: 698 error = 0; 699 io = (struct pci_io *)data; 700 pcidev = pci_find_dbsf(io->pi_sel.pc_domain, io->pi_sel.pc_bus, 701 io->pi_sel.pc_dev, io->pi_sel.pc_func); 702 if (pcidev != NULL) 703 io->pi_data = device_is_attached(pcidev); 704 else 705 error = ENODEV; 706 break; 707 default: 708 error = ENOTTY; 709 break; 710 } 711 712 return (error); 713 } 714