pci_user.c revision 172932
154359Sroberto/*- 254359Sroberto * Copyright (c) 1997, Stefan Esser <se@freebsd.org> 354359Sroberto * All rights reserved. 4290000Sglebius * 554359Sroberto * Redistribution and use in source and binary forms, with or without 654359Sroberto * modification, are permitted provided that the following conditions 754359Sroberto * are met: 854359Sroberto * 1. Redistributions of source code must retain the above copyright 954359Sroberto * notice unmodified, this list of conditions, and the following 1054359Sroberto * disclaimer. 1154359Sroberto * 2. Redistributions in binary form must reproduce the above copyright 1254359Sroberto * notice, this list of conditions and the following disclaimer in the 1354359Sroberto * documentation and/or other materials provided with the distribution. 1454359Sroberto * 1554359Sroberto * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 1654359Sroberto * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 1754359Sroberto * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 1854359Sroberto * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 1954359Sroberto * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 2054359Sroberto * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2154359Sroberto * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2256746Sroberto * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2356746Sroberto * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2454359Sroberto * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2554359Sroberto */ 2654359Sroberto 2754359Sroberto#include <sys/cdefs.h> 2856746Sroberto__FBSDID("$FreeBSD: head/sys/dev/pci/pci_user.c 172932 2007-10-24 20:51:44Z marius $"); 2956746Sroberto 3054359Sroberto#include "opt_bus.h" /* XXX trim includes */ 3154359Sroberto#include "opt_compat.h" 3254359Sroberto 3354359Sroberto#include <sys/param.h> 3454359Sroberto#include <sys/systm.h> 3554359Sroberto#include <sys/malloc.h> 3654359Sroberto#include <sys/module.h> 3754359Sroberto#include <sys/linker.h> 3854359Sroberto#include <sys/fcntl.h> 3954359Sroberto#include <sys/conf.h> 4054359Sroberto#include <sys/kernel.h> 4154359Sroberto#include <sys/proc.h> 4254359Sroberto#include <sys/queue.h> 4354359Sroberto#include <sys/types.h> 44182007Sroberto 45182007Sroberto#include <vm/vm.h> 4654359Sroberto#include <vm/pmap.h> 4754359Sroberto#include <vm/vm_extern.h> 4854359Sroberto 4954359Sroberto#include <sys/bus.h> 50182007Sroberto#include <machine/bus.h> 51182007Sroberto#include <sys/rman.h> 5254359Sroberto#include <machine/resource.h> 5354359Sroberto 5454359Sroberto#include <sys/pciio.h> 5554359Sroberto#include <dev/pci/pcireg.h> 5654359Sroberto#include <dev/pci/pcivar.h> 5754359Sroberto 5854359Sroberto#include "pcib_if.h" 5954359Sroberto#include "pci_if.h" 60182007Sroberto 61182007Sroberto/* 62182007Sroberto * This is the user interface to PCI configuration space. 63182007Sroberto */ 64182007Sroberto 65182007Srobertostatic d_open_t pci_open; 6654359Srobertostatic d_close_t pci_close; 6754359Srobertostatic int pci_conf_match(struct pci_match_conf *matches, int num_matches, 6854359Sroberto struct pci_conf *match_buf); 6954359Srobertostatic d_ioctl_t pci_ioctl; 7054359Sroberto 7154359Srobertostruct cdevsw pcicdev = { 72290000Sglebius .d_version = D_VERSION, 73290000Sglebius .d_flags = D_NEEDGIANT, 7454359Sroberto .d_open = pci_open, 7554359Sroberto .d_close = pci_close, 7654359Sroberto .d_ioctl = pci_ioctl, 7754359Sroberto .d_name = "pci", 7854359Sroberto}; 7954359Sroberto 8056746Srobertostatic int 8154359Srobertopci_open(struct cdev *dev, int oflags, int devtype, struct thread *td) 82290000Sglebius{ 8354359Sroberto int error; 8456746Sroberto 8556746Sroberto if (oflags & FWRITE) { 8656746Sroberto error = securelevel_gt(td->td_ucred, 0); 8756746Sroberto if (error) 88132451Sroberto return (error); 8956746Sroberto } 9082498Sroberto 9182498Sroberto return (0); 9282498Sroberto} 9382498Sroberto 94132451Srobertostatic int 95132451Srobertopci_close(struct cdev *dev, int flag, int devtype, struct thread *td) 96106424Sroberto{ 97106424Sroberto return 0; 98132451Sroberto} 99106163Sroberto 100106424Sroberto/* 101106424Sroberto * Match a single pci_conf structure against an array of pci_match_conf 102106424Sroberto * structures. The first argument, 'matches', is an array of num_matches 103106424Sroberto * pci_match_conf structures. match_buf is a pointer to the pci_conf 104290000Sglebius * structure that will be compared to every entry in the matches array. 105290000Sglebius * This function returns 1 on failure, 0 on success. 106290000Sglebius */ 107290000Sglebiusstatic int 10854359Srobertopci_conf_match(struct pci_match_conf *matches, int num_matches, 10954359Sroberto struct pci_conf *match_buf) 11054359Sroberto{ 11154359Sroberto int i; 11254359Sroberto 11354359Sroberto if ((matches == NULL) || (match_buf == NULL) || (num_matches <= 0)) 11454359Sroberto return(1); 11554359Sroberto 11654359Sroberto for (i = 0; i < num_matches; i++) { 11754359Sroberto /* 11854359Sroberto * I'm not sure why someone would do this...but... 11954359Sroberto */ 120290000Sglebius if (matches[i].flags == PCI_GETCONF_NO_MATCH) 12154359Sroberto continue; 12254359Sroberto 12354359Sroberto /* 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 175typedef enum { 176 PCI_GETCONF_NO_MATCH_OLD = 0x00, 177 PCI_GETCONF_MATCH_BUS_OLD = 0x01, 178 PCI_GETCONF_MATCH_DEV_OLD = 0x02, 179 PCI_GETCONF_MATCH_FUNC_OLD = 0x04, 180 PCI_GETCONF_MATCH_NAME_OLD = 0x08, 181 PCI_GETCONF_MATCH_UNIT_OLD = 0x10, 182 PCI_GETCONF_MATCH_VENDOR_OLD = 0x20, 183 PCI_GETCONF_MATCH_DEVICE_OLD = 0x40, 184 PCI_GETCONF_MATCH_CLASS_OLD = 0x80 185} pci_getconf_flags_old; 186 187struct pcisel_old { 188 u_int8_t pc_bus; /* bus number */ 189 u_int8_t pc_dev; /* device on this bus */ 190 u_int8_t pc_func; /* function on this device */ 191}; 192 193struct pci_conf_old { 194 struct pcisel_old pc_sel; /* bus+slot+function */ 195 u_int8_t pc_hdr; /* PCI header type */ 196 u_int16_t pc_subvendor; /* card vendor ID */ 197 u_int16_t pc_subdevice; /* card device ID, assigned by 198 card vendor */ 199 u_int16_t pc_vendor; /* chip vendor ID */ 200 u_int16_t pc_device; /* chip device ID, assigned by 201 chip vendor */ 202 u_int8_t pc_class; /* chip PCI class */ 203 u_int8_t pc_subclass; /* chip PCI subclass */ 204 u_int8_t pc_progif; /* chip PCI programming interface */ 205 u_int8_t pc_revid; /* chip revision ID */ 206 char pd_name[PCI_MAXNAMELEN + 1]; /* device name */ 207 u_long pd_unit; /* device unit number */ 208}; 209 210struct pci_match_conf_old { 211 struct pcisel_old pc_sel; /* bus+slot+function */ 212 char pd_name[PCI_MAXNAMELEN + 1]; /* device name */ 213 u_long pd_unit; /* Unit number */ 214 u_int16_t pc_vendor; /* PCI Vendor ID */ 215 u_int16_t pc_device; /* PCI Device ID */ 216 u_int8_t pc_class; /* PCI class */ 217 pci_getconf_flags flags; /* Matching expression */ 218}; 219 220struct pci_io_old { 221 struct pcisel_old pi_sel; /* device to operate on */ 222 int pi_reg; /* configuration register to examine */ 223 int pi_width; /* width (in bytes) of read or write */ 224 u_int32_t pi_data; /* data to write or result of read */ 225}; 226 227#define PCIOCGETCONF_OLD _IOWR('p', 1, struct pci_conf_io) 228#define PCIOCREAD_OLD _IOWR('p', 2, struct pci_io_old) 229#define PCIOCWRITE_OLD _IOWR('p', 3, struct pci_io_old) 230 231static int pci_conf_match_old(struct pci_match_conf_old *matches, 232 int num_matches, struct pci_conf *match_buf); 233 234static int 235pci_conf_match_old(struct pci_match_conf_old *matches, int num_matches, 236 struct pci_conf *match_buf) 237{ 238 int i; 239 240 if ((matches == NULL) || (match_buf == NULL) || (num_matches <= 0)) 241 return(1); 242 243 for (i = 0; i < num_matches; i++) { 244 if (match_buf->pc_sel.pc_domain != 0) 245 continue; 246 247 /* 248 * I'm not sure why someone would do this...but... 249 */ 250 if (matches[i].flags == PCI_GETCONF_NO_MATCH_OLD) 251 continue; 252 253 /* 254 * Look at each of the match flags. If it's set, do the 255 * comparison. If the comparison fails, we don't have a 256 * match, go on to the next item if there is one. 257 */ 258 if (((matches[i].flags & PCI_GETCONF_MATCH_BUS_OLD) != 0) 259 && (match_buf->pc_sel.pc_bus != matches[i].pc_sel.pc_bus)) 260 continue; 261 262 if (((matches[i].flags & PCI_GETCONF_MATCH_DEV_OLD) != 0) 263 && (match_buf->pc_sel.pc_dev != matches[i].pc_sel.pc_dev)) 264 continue; 265 266 if (((matches[i].flags & PCI_GETCONF_MATCH_FUNC_OLD) != 0) 267 && (match_buf->pc_sel.pc_func != matches[i].pc_sel.pc_func)) 268 continue; 269 270 if (((matches[i].flags & PCI_GETCONF_MATCH_VENDOR_OLD) != 0) 271 && (match_buf->pc_vendor != matches[i].pc_vendor)) 272 continue; 273 274 if (((matches[i].flags & PCI_GETCONF_MATCH_DEVICE_OLD) != 0) 275 && (match_buf->pc_device != matches[i].pc_device)) 276 continue; 277 278 if (((matches[i].flags & PCI_GETCONF_MATCH_CLASS_OLD) != 0) 279 && (match_buf->pc_class != matches[i].pc_class)) 280 continue; 281 282 if (((matches[i].flags & PCI_GETCONF_MATCH_UNIT_OLD) != 0) 283 && (match_buf->pd_unit != matches[i].pd_unit)) 284 continue; 285 286 if (((matches[i].flags & PCI_GETCONF_MATCH_NAME_OLD) != 0) 287 && (strncmp(matches[i].pd_name, match_buf->pd_name, 288 sizeof(match_buf->pd_name)) != 0)) 289 continue; 290 291 return(0); 292 } 293 294 return(1); 295} 296 297#endif 298 299static int 300pci_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 301{ 302 device_t pcidev, brdev; 303 void *confdata; 304 const char *name; 305 struct devlist *devlist_head; 306 struct pci_conf_io *cio; 307 struct pci_devinfo *dinfo; 308 struct pci_io *io; 309 struct pci_match_conf *pattern_buf; 310 size_t confsz, iolen, pbufsz; 311 int error, ionum, i, num_patterns; 312#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 313 defined(COMPAT_FREEBSD6) 314 struct pci_conf_old conf_old; 315 struct pci_io iodata; 316 struct pci_io_old *io_old; 317 struct pci_match_conf_old *pattern_buf_old; 318 319 io_old = NULL; 320 pattern_buf_old = NULL; 321 322 if (!(flag & FWRITE) && 323 (cmd != PCIOCGETCONF && cmd != PCIOCGETCONF_OLD)) 324 return EPERM; 325#else 326 if (!(flag & FWRITE) && cmd != PCIOCGETCONF) 327 return EPERM; 328#endif 329 330 switch(cmd) { 331#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 332 defined(COMPAT_FREEBSD6) 333 case PCIOCGETCONF_OLD: 334 /* FALLTHROUGH */ 335#endif 336 case PCIOCGETCONF: 337 cio = (struct pci_conf_io *)data; 338 339 pattern_buf = NULL; 340 num_patterns = 0; 341 dinfo = NULL; 342 343 cio->num_matches = 0; 344 345 /* 346 * If the user specified an offset into the device list, 347 * but the list has changed since they last called this 348 * ioctl, tell them that the list has changed. They will 349 * have to get the list from the beginning. 350 */ 351 if ((cio->offset != 0) 352 && (cio->generation != pci_generation)){ 353 cio->status = PCI_GETCONF_LIST_CHANGED; 354 error = 0; 355 break; 356 } 357 358 /* 359 * Check to see whether the user has asked for an offset 360 * past the end of our list. 361 */ 362 if (cio->offset >= pci_numdevs) { 363 cio->status = PCI_GETCONF_LAST_DEVICE; 364 error = 0; 365 break; 366 } 367 368 /* get the head of the device queue */ 369 devlist_head = &pci_devq; 370 371 /* 372 * Determine how much room we have for pci_conf structures. 373 * Round the user's buffer size down to the nearest 374 * multiple of sizeof(struct pci_conf) in case the user 375 * didn't specify a multiple of that size. 376 */ 377#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 378 defined(COMPAT_FREEBSD6) 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#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 413 defined(COMPAT_FREEBSD6) 414 if (cmd == PCIOCGETCONF_OLD) 415 pbufsz = sizeof(struct pci_match_conf_old); 416 else 417#endif 418 pbufsz = sizeof(struct pci_match_conf); 419 if (cio->num_patterns * pbufsz != cio->pat_buf_len) { 420 /* The user made a mistake, return an error. */ 421 cio->status = PCI_GETCONF_ERROR; 422 error = EINVAL; 423 break; 424 } 425 426 /* 427 * Allocate a buffer to hold the patterns. 428 */ 429#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 430 defined(COMPAT_FREEBSD6) 431 if (cmd == PCIOCGETCONF_OLD) { 432 pattern_buf_old = malloc(cio->pat_buf_len, 433 M_TEMP, M_WAITOK); 434 error = copyin(cio->patterns, 435 pattern_buf_old, cio->pat_buf_len); 436 } else 437#endif 438 { 439 pattern_buf = malloc(cio->pat_buf_len, M_TEMP, 440 M_WAITOK); 441 error = copyin(cio->patterns, pattern_buf, 442 cio->pat_buf_len); 443 } 444 if (error != 0) { 445 error = EINVAL; 446 goto getconfexit; 447 } 448 num_patterns = cio->num_patterns; 449 } else if ((cio->num_patterns > 0) 450 || (cio->pat_buf_len > 0)) { 451 /* 452 * The user made a mistake, spit out an error. 453 */ 454 cio->status = PCI_GETCONF_ERROR; 455 error = EINVAL; 456 break; 457 } 458 459 /* 460 * Go through the list of devices and copy out the devices 461 * that match the user's criteria. 462 */ 463 for (cio->num_matches = 0, error = 0, i = 0, 464 dinfo = STAILQ_FIRST(devlist_head); 465 (dinfo != NULL) && (cio->num_matches < ionum) 466 && (error == 0) && (i < pci_numdevs) && (dinfo != NULL); 467 dinfo = STAILQ_NEXT(dinfo, pci_links), i++) { 468 469 if (i < cio->offset) 470 continue; 471 472 /* Populate pd_name and pd_unit */ 473 name = NULL; 474 if (dinfo->cfg.dev && dinfo->conf.pd_name[0] == '\0') 475 name = device_get_name(dinfo->cfg.dev); 476 if (name) { 477 strncpy(dinfo->conf.pd_name, name, 478 sizeof(dinfo->conf.pd_name)); 479 dinfo->conf.pd_name[PCI_MAXNAMELEN] = 0; 480 dinfo->conf.pd_unit = 481 device_get_unit(dinfo->cfg.dev); 482 } 483 484#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 485 defined(COMPAT_FREEBSD6) 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#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 511 defined(COMPAT_FREEBSD6) 512 if (cmd == PCIOCGETCONF_OLD) { 513 conf_old.pc_sel.pc_bus = 514 dinfo->conf.pc_sel.pc_bus; 515 conf_old.pc_sel.pc_dev = 516 dinfo->conf.pc_sel.pc_dev; 517 conf_old.pc_sel.pc_func = 518 dinfo->conf.pc_sel.pc_func; 519 conf_old.pc_hdr = dinfo->conf.pc_hdr; 520 conf_old.pc_subvendor = 521 dinfo->conf.pc_subvendor; 522 conf_old.pc_subdevice = 523 dinfo->conf.pc_subdevice; 524 conf_old.pc_vendor = 525 dinfo->conf.pc_vendor; 526 conf_old.pc_device = 527 dinfo->conf.pc_device; 528 conf_old.pc_class = 529 dinfo->conf.pc_class; 530 conf_old.pc_subclass = 531 dinfo->conf.pc_subclass; 532 conf_old.pc_progif = 533 dinfo->conf.pc_progif; 534 conf_old.pc_revid = 535 dinfo->conf.pc_revid; 536 conf_old.pd_name[0] = '\0'; 537 conf_old.pd_unit = 0; 538 if (name) { 539 strncpy(conf_old.pd_name, name, 540 sizeof(conf_old.pd_name)); 541 conf_old. 542 pd_name[PCI_MAXNAMELEN] = 0; 543 conf_old.pd_unit = 544 dinfo->conf.pd_unit; 545 } 546 confdata = &conf_old; 547 } else 548#endif 549 confdata = &dinfo->conf; 550 /* Only if we can copy it out do we count it. */ 551 if (!(error = copyout(confdata, 552 &cio->matches[cio->num_matches], confsz))) 553 cio->num_matches++; 554 } 555 } 556 557 /* 558 * Set the pointer into the list, so if the user is getting 559 * n records at a time, where n < pci_numdevs, 560 */ 561 cio->offset = i; 562 563 /* 564 * Set the generation, the user will need this if they make 565 * another ioctl call with offset != 0. 566 */ 567 cio->generation = pci_generation; 568 569 /* 570 * If this is the last device, inform the user so he won't 571 * bother asking for more devices. If dinfo isn't NULL, we 572 * know that there are more matches in the list because of 573 * the way the traversal is done. 574 */ 575 if (dinfo == NULL) 576 cio->status = PCI_GETCONF_LAST_DEVICE; 577 else 578 cio->status = PCI_GETCONF_MORE_DEVS; 579 580getconfexit: 581 if (pattern_buf != NULL) 582 free(pattern_buf, M_TEMP); 583#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 584 defined(COMPAT_FREEBSD6) 585 if (pattern_buf_old != NULL) 586 free(pattern_buf_old, M_TEMP); 587#endif 588 589 break; 590 591#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 592 defined(COMPAT_FREEBSD6) 593 case PCIOCREAD_OLD: 594 case PCIOCWRITE_OLD: 595 io_old = (struct pci_io_old *)data; 596 iodata.pi_sel.pc_domain = 0; 597 iodata.pi_sel.pc_bus = io_old->pi_sel.pc_bus; 598 iodata.pi_sel.pc_dev = io_old->pi_sel.pc_dev; 599 iodata.pi_sel.pc_func = io_old->pi_sel.pc_func; 600 iodata.pi_reg = io_old->pi_reg; 601 iodata.pi_width = io_old->pi_width; 602 iodata.pi_data = io_old->pi_data; 603 data = (caddr_t)&iodata; 604 /* FALLTHROUGH */ 605#endif 606 case PCIOCREAD: 607 case PCIOCWRITE: 608 io = (struct pci_io *)data; 609 switch(io->pi_width) { 610 case 4: 611 case 2: 612 case 1: 613 /* Make sure register is in bounds and aligned. */ 614 if (io->pi_reg < 0 || 615 io->pi_reg + io->pi_width > PCI_REGMAX + 1 || 616 io->pi_reg & (io->pi_width - 1)) { 617 error = EINVAL; 618 break; 619 } 620 /* 621 * Assume that the user-level bus number is 622 * in fact the physical PCI bus number. 623 * Look up the grandparent, i.e. the bridge device, 624 * so that we can issue configuration space cycles. 625 */ 626 pcidev = pci_find_dbsf(io->pi_sel.pc_domain, 627 io->pi_sel.pc_bus, io->pi_sel.pc_dev, 628 io->pi_sel.pc_func); 629 if (pcidev) { 630 brdev = device_get_parent( 631 device_get_parent(pcidev)); 632 633#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 634 defined(COMPAT_FREEBSD6) 635 if (cmd == PCIOCWRITE || cmd == PCIOCWRITE_OLD) 636#else 637 if (cmd == PCIOCWRITE) 638#endif 639 PCIB_WRITE_CONFIG(brdev, 640 io->pi_sel.pc_bus, 641 io->pi_sel.pc_dev, 642 io->pi_sel.pc_func, 643 io->pi_reg, 644 io->pi_data, 645 io->pi_width); 646#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 647 defined(COMPAT_FREEBSD6) 648 else if (cmd == PCIOCREAD_OLD) 649 io_old->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#endif 657 else 658 io->pi_data = 659 PCIB_READ_CONFIG(brdev, 660 io->pi_sel.pc_bus, 661 io->pi_sel.pc_dev, 662 io->pi_sel.pc_func, 663 io->pi_reg, 664 io->pi_width); 665 error = 0; 666 } else { 667#ifdef COMPAT_FREEBSD4 668 if (cmd == PCIOCREAD_OLD) { 669 io_old->pi_data = -1; 670 error = 0; 671 } else 672#endif 673 error = ENODEV; 674 } 675 break; 676 default: 677 error = EINVAL; 678 break; 679 } 680 break; 681 682 default: 683 error = ENOTTY; 684 break; 685 } 686 687 return (error); 688} 689