pci_user.c revision 244695
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: head/sys/dev/pci/pci_user.c 244695 2012-12-26 13:07:17Z davidxu $"); 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 65static d_open_t pci_open; 66static d_close_t pci_close; 67static int pci_conf_match(struct pci_match_conf *matches, int num_matches, 68 struct pci_conf *match_buf); 69static d_ioctl_t pci_ioctl; 70 71struct 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 80static int 81pci_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 94static int 95pci_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 */ 107static int 108pci_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 176typedef 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 188struct 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 194struct 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 211struct 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 221struct 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#ifdef COMPAT_FREEBSD32 229struct pci_conf_old32 { 230 struct pcisel_old pc_sel; /* bus+slot+function */ 231 uint8_t pc_hdr; /* PCI header type */ 232 uint16_t pc_subvendor; /* card vendor ID */ 233 uint16_t pc_subdevice; /* card device ID, assigned by 234 card vendor */ 235 uint16_t pc_vendor; /* chip vendor ID */ 236 uint16_t pc_device; /* chip device ID, assigned by 237 chip vendor */ 238 uint8_t pc_class; /* chip PCI class */ 239 uint8_t pc_subclass; /* chip PCI subclass */ 240 uint8_t pc_progif; /* chip PCI programming interface */ 241 uint8_t pc_revid; /* chip revision ID */ 242 char pd_name[PCI_MAXNAMELEN + 1]; /* device name */ 243 uint32_t pd_unit; /* device unit number (u_long) */ 244}; 245 246struct pci_match_conf_old32 { 247 struct pcisel_old pc_sel; /* bus+slot+function */ 248 char pd_name[PCI_MAXNAMELEN + 1]; /* device name */ 249 uint32_t pd_unit; /* Unit number (u_long) */ 250 uint16_t pc_vendor; /* PCI Vendor ID */ 251 uint16_t pc_device; /* PCI Device ID */ 252 uint8_t pc_class; /* PCI class */ 253 pci_getconf_flags_old flags; /* Matching expression */ 254}; 255 256struct pci_conf_io32 { 257 uint32_t pat_buf_len; /* pattern buffer length */ 258 uint32_t num_patterns; /* number of patterns */ 259 uint32_t patterns; /* pattern buffer 260 (struct pci_match_conf_old32 *) */ 261 uint32_t match_buf_len; /* match buffer length */ 262 uint32_t num_matches; /* number of matches returned */ 263 uint32_t matches; /* match buffer 264 (struct pci_conf_old32 *) */ 265 uint32_t offset; /* offset into device list */ 266 uint32_t generation; /* device list generation */ 267 pci_getconf_status status; /* request status */ 268}; 269 270#define PCIOCGETCONF_OLD32 _IOWR('p', 1, struct pci_conf_io32) 271#endif /* COMPAT_FREEBSD32 */ 272 273#define PCIOCGETCONF_OLD _IOWR('p', 1, struct pci_conf_io) 274#define PCIOCREAD_OLD _IOWR('p', 2, struct pci_io_old) 275#define PCIOCWRITE_OLD _IOWR('p', 3, struct pci_io_old) 276 277static int pci_conf_match_old(struct pci_match_conf_old *matches, 278 int num_matches, struct pci_conf *match_buf); 279 280static int 281pci_conf_match_old(struct pci_match_conf_old *matches, int num_matches, 282 struct pci_conf *match_buf) 283{ 284 int i; 285 286 if ((matches == NULL) || (match_buf == NULL) || (num_matches <= 0)) 287 return(1); 288 289 for (i = 0; i < num_matches; i++) { 290 if (match_buf->pc_sel.pc_domain != 0) 291 continue; 292 293 /* 294 * I'm not sure why someone would do this...but... 295 */ 296 if (matches[i].flags == PCI_GETCONF_NO_MATCH_OLD) 297 continue; 298 299 /* 300 * Look at each of the match flags. If it's set, do the 301 * comparison. If the comparison fails, we don't have a 302 * match, go on to the next item if there is one. 303 */ 304 if (((matches[i].flags & PCI_GETCONF_MATCH_BUS_OLD) != 0) 305 && (match_buf->pc_sel.pc_bus != matches[i].pc_sel.pc_bus)) 306 continue; 307 308 if (((matches[i].flags & PCI_GETCONF_MATCH_DEV_OLD) != 0) 309 && (match_buf->pc_sel.pc_dev != matches[i].pc_sel.pc_dev)) 310 continue; 311 312 if (((matches[i].flags & PCI_GETCONF_MATCH_FUNC_OLD) != 0) 313 && (match_buf->pc_sel.pc_func != matches[i].pc_sel.pc_func)) 314 continue; 315 316 if (((matches[i].flags & PCI_GETCONF_MATCH_VENDOR_OLD) != 0) 317 && (match_buf->pc_vendor != matches[i].pc_vendor)) 318 continue; 319 320 if (((matches[i].flags & PCI_GETCONF_MATCH_DEVICE_OLD) != 0) 321 && (match_buf->pc_device != matches[i].pc_device)) 322 continue; 323 324 if (((matches[i].flags & PCI_GETCONF_MATCH_CLASS_OLD) != 0) 325 && (match_buf->pc_class != matches[i].pc_class)) 326 continue; 327 328 if (((matches[i].flags & PCI_GETCONF_MATCH_UNIT_OLD) != 0) 329 && (match_buf->pd_unit != matches[i].pd_unit)) 330 continue; 331 332 if (((matches[i].flags & PCI_GETCONF_MATCH_NAME_OLD) != 0) 333 && (strncmp(matches[i].pd_name, match_buf->pd_name, 334 sizeof(match_buf->pd_name)) != 0)) 335 continue; 336 337 return(0); 338 } 339 340 return(1); 341} 342 343#ifdef COMPAT_FREEBSD32 344static int 345pci_conf_match_old32(struct pci_match_conf_old32 *matches, int num_matches, 346 struct pci_conf *match_buf) 347{ 348 int i; 349 350 if ((matches == NULL) || (match_buf == NULL) || (num_matches <= 0)) 351 return(1); 352 353 for (i = 0; i < num_matches; i++) { 354 if (match_buf->pc_sel.pc_domain != 0) 355 continue; 356 357 /* 358 * I'm not sure why someone would do this...but... 359 */ 360 if (matches[i].flags == PCI_GETCONF_NO_MATCH_OLD) 361 continue; 362 363 /* 364 * Look at each of the match flags. If it's set, do the 365 * comparison. If the comparison fails, we don't have a 366 * match, go on to the next item if there is one. 367 */ 368 if (((matches[i].flags & PCI_GETCONF_MATCH_BUS_OLD) != 0) && 369 (match_buf->pc_sel.pc_bus != matches[i].pc_sel.pc_bus)) 370 continue; 371 372 if (((matches[i].flags & PCI_GETCONF_MATCH_DEV_OLD) != 0) && 373 (match_buf->pc_sel.pc_dev != matches[i].pc_sel.pc_dev)) 374 continue; 375 376 if (((matches[i].flags & PCI_GETCONF_MATCH_FUNC_OLD) != 0) && 377 (match_buf->pc_sel.pc_func != matches[i].pc_sel.pc_func)) 378 continue; 379 380 if (((matches[i].flags & PCI_GETCONF_MATCH_VENDOR_OLD) != 0) && 381 (match_buf->pc_vendor != matches[i].pc_vendor)) 382 continue; 383 384 if (((matches[i].flags & PCI_GETCONF_MATCH_DEVICE_OLD) != 0) && 385 (match_buf->pc_device != matches[i].pc_device)) 386 continue; 387 388 if (((matches[i].flags & PCI_GETCONF_MATCH_CLASS_OLD) != 0) && 389 (match_buf->pc_class != matches[i].pc_class)) 390 continue; 391 392 if (((matches[i].flags & PCI_GETCONF_MATCH_UNIT_OLD) != 0) && 393 ((u_int32_t)match_buf->pd_unit != matches[i].pd_unit)) 394 continue; 395 396 if (((matches[i].flags & PCI_GETCONF_MATCH_NAME_OLD) != 0) && 397 (strncmp(matches[i].pd_name, match_buf->pd_name, 398 sizeof(match_buf->pd_name)) != 0)) 399 continue; 400 401 return (0); 402 } 403 404 return (1); 405} 406#endif /* COMPAT_FREEBSD32 */ 407#endif /* PRE7_COMPAT */ 408 409static int 410pci_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 411{ 412 device_t pcidev, brdev; 413 void *confdata; 414 const char *name; 415 struct devlist *devlist_head; 416 struct pci_conf_io *cio = NULL; 417 struct pci_devinfo *dinfo; 418 struct pci_io *io; 419 struct pci_bar_io *bio; 420 struct pci_match_conf *pattern_buf; 421 struct pci_map *pm; 422 size_t confsz, iolen, pbufsz; 423 int error, ionum, i, num_patterns; 424#ifdef PRE7_COMPAT 425#ifdef COMPAT_FREEBSD32 426 struct pci_conf_io32 *cio32 = NULL; 427 struct pci_conf_old32 conf_old32; 428 struct pci_match_conf_old32 *pattern_buf_old32 = NULL; 429#endif 430 struct pci_conf_old conf_old; 431 struct pci_io iodata; 432 struct pci_io_old *io_old; 433 struct pci_match_conf_old *pattern_buf_old = NULL; 434 435 io_old = NULL; 436 437 if (!(flag & FWRITE) && cmd != PCIOCGETBAR && 438 cmd != PCIOCGETCONF && cmd != PCIOCGETCONF_OLD) 439 return EPERM; 440#else 441 if (!(flag & FWRITE) && cmd != PCIOCGETBAR && cmd != PCIOCGETCONF) 442 return EPERM; 443#endif 444 445 switch(cmd) { 446#ifdef PRE7_COMPAT 447#ifdef COMPAT_FREEBSD32 448 case PCIOCGETCONF_OLD32: 449 cio32 = (struct pci_conf_io32 *)data; 450 cio = malloc(sizeof(struct pci_conf_io), M_TEMP, M_WAITOK); 451 cio->pat_buf_len = cio32->pat_buf_len; 452 cio->num_patterns = cio32->num_patterns; 453 cio->patterns = (void *)(uintptr_t)cio32->patterns; 454 cio->match_buf_len = cio32->match_buf_len; 455 cio->num_matches = cio32->num_matches; 456 cio->matches = (void *)(uintptr_t)cio32->matches; 457 cio->offset = cio32->offset; 458 cio->generation = cio32->generation; 459 cio->status = cio32->status; 460 cio32->num_matches = 0; 461 break; 462#endif 463 case PCIOCGETCONF_OLD: 464#endif 465 case PCIOCGETCONF: 466 cio = (struct pci_conf_io *)data; 467 } 468 469 switch(cmd) { 470#ifdef PRE7_COMPAT 471#ifdef COMPAT_FREEBSD32 472 case PCIOCGETCONF_OLD32: 473#endif 474 case PCIOCGETCONF_OLD: 475#endif 476 case PCIOCGETCONF: 477 478 pattern_buf = NULL; 479 num_patterns = 0; 480 dinfo = NULL; 481 482 cio->num_matches = 0; 483 484 /* 485 * If the user specified an offset into the device list, 486 * but the list has changed since they last called this 487 * ioctl, tell them that the list has changed. They will 488 * have to get the list from the beginning. 489 */ 490 if ((cio->offset != 0) 491 && (cio->generation != pci_generation)){ 492 cio->status = PCI_GETCONF_LIST_CHANGED; 493 error = 0; 494 goto getconfexit; 495 } 496 497 /* 498 * Check to see whether the user has asked for an offset 499 * past the end of our list. 500 */ 501 if (cio->offset >= pci_numdevs) { 502 cio->status = PCI_GETCONF_LAST_DEVICE; 503 error = 0; 504 goto getconfexit; 505 } 506 507 /* get the head of the device queue */ 508 devlist_head = &pci_devq; 509 510 /* 511 * Determine how much room we have for pci_conf structures. 512 * Round the user's buffer size down to the nearest 513 * multiple of sizeof(struct pci_conf) in case the user 514 * didn't specify a multiple of that size. 515 */ 516#ifdef PRE7_COMPAT 517#ifdef COMPAT_FREEBSD32 518 if (cmd == PCIOCGETCONF_OLD32) 519 confsz = sizeof(struct pci_conf_old32); 520 else 521#endif 522 if (cmd == PCIOCGETCONF_OLD) 523 confsz = sizeof(struct pci_conf_old); 524 else 525#endif 526 confsz = sizeof(struct pci_conf); 527 iolen = min(cio->match_buf_len - (cio->match_buf_len % confsz), 528 pci_numdevs * confsz); 529 530 /* 531 * Since we know that iolen is a multiple of the size of 532 * the pciconf union, it's okay to do this. 533 */ 534 ionum = iolen / confsz; 535 536 /* 537 * If this test is true, the user wants the pci_conf 538 * structures returned to match the supplied entries. 539 */ 540 if ((cio->num_patterns > 0) && (cio->num_patterns < pci_numdevs) 541 && (cio->pat_buf_len > 0)) { 542 /* 543 * pat_buf_len needs to be: 544 * num_patterns * sizeof(struct pci_match_conf) 545 * While it is certainly possible the user just 546 * allocated a large buffer, but set the number of 547 * matches correctly, it is far more likely that 548 * their kernel doesn't match the userland utility 549 * they're using. It's also possible that the user 550 * forgot to initialize some variables. Yes, this 551 * may be overly picky, but I hazard to guess that 552 * it's far more likely to just catch folks that 553 * updated their kernel but not their userland. 554 */ 555#ifdef PRE7_COMPAT 556#ifdef COMPAT_FREEBSD32 557 if (cmd == PCIOCGETCONF_OLD32) 558 pbufsz = sizeof(struct pci_match_conf_old32); 559 else 560#endif 561 if (cmd == PCIOCGETCONF_OLD) 562 pbufsz = sizeof(struct pci_match_conf_old); 563 else 564#endif 565 pbufsz = sizeof(struct pci_match_conf); 566 if (cio->num_patterns * pbufsz != cio->pat_buf_len) { 567 /* The user made a mistake, return an error. */ 568 cio->status = PCI_GETCONF_ERROR; 569 error = EINVAL; 570 goto getconfexit; 571 } 572 573 /* 574 * Allocate a buffer to hold the patterns. 575 */ 576#ifdef PRE7_COMPAT 577#ifdef COMPAT_FREEBSD32 578 if (cmd == PCIOCGETCONF_OLD32) { 579 pattern_buf_old32 = malloc(cio->pat_buf_len, 580 M_TEMP, M_WAITOK); 581 error = copyin(cio->patterns, 582 pattern_buf_old32, cio->pat_buf_len); 583 } else 584#endif /* COMPAT_FREEBSD32 */ 585 if (cmd == PCIOCGETCONF_OLD) { 586 pattern_buf_old = malloc(cio->pat_buf_len, 587 M_TEMP, M_WAITOK); 588 error = copyin(cio->patterns, 589 pattern_buf_old, cio->pat_buf_len); 590 } else 591#endif /* PRE7_COMPAT */ 592 { 593 pattern_buf = malloc(cio->pat_buf_len, M_TEMP, 594 M_WAITOK); 595 error = copyin(cio->patterns, pattern_buf, 596 cio->pat_buf_len); 597 } 598 if (error != 0) { 599 error = EINVAL; 600 goto getconfexit; 601 } 602 num_patterns = cio->num_patterns; 603 } else if ((cio->num_patterns > 0) 604 || (cio->pat_buf_len > 0)) { 605 /* 606 * The user made a mistake, spit out an error. 607 */ 608 cio->status = PCI_GETCONF_ERROR; 609 error = EINVAL; 610 goto getconfexit; 611 } 612 613 /* 614 * Go through the list of devices and copy out the devices 615 * that match the user's criteria. 616 */ 617 for (cio->num_matches = 0, error = 0, i = 0, 618 dinfo = STAILQ_FIRST(devlist_head); 619 (dinfo != NULL) && (cio->num_matches < ionum) 620 && (error == 0) && (i < pci_numdevs) && (dinfo != NULL); 621 dinfo = STAILQ_NEXT(dinfo, pci_links), i++) { 622 623 if (i < cio->offset) 624 continue; 625 626 /* Populate pd_name and pd_unit */ 627 name = NULL; 628 if (dinfo->cfg.dev) 629 name = device_get_name(dinfo->cfg.dev); 630 if (name) { 631 strncpy(dinfo->conf.pd_name, name, 632 sizeof(dinfo->conf.pd_name)); 633 dinfo->conf.pd_name[PCI_MAXNAMELEN] = 0; 634 dinfo->conf.pd_unit = 635 device_get_unit(dinfo->cfg.dev); 636 } else { 637 dinfo->conf.pd_name[0] = '\0'; 638 dinfo->conf.pd_unit = 0; 639 } 640 641#ifdef PRE7_COMPAT 642 if ( 643#ifdef COMPAT_FREEBSD32 644 (cmd == PCIOCGETCONF_OLD32 && 645 (pattern_buf_old32 == NULL || 646 pci_conf_match_old32(pattern_buf_old32, 647 num_patterns, &dinfo->conf) == 0)) || 648#endif 649 (cmd == PCIOCGETCONF_OLD && 650 (pattern_buf_old == NULL || 651 pci_conf_match_old(pattern_buf_old, num_patterns, 652 &dinfo->conf) == 0)) || 653 (cmd == PCIOCGETCONF && 654 (pattern_buf == NULL || 655 pci_conf_match(pattern_buf, num_patterns, 656 &dinfo->conf) == 0))) { 657#else 658 if (pattern_buf == NULL || 659 pci_conf_match(pattern_buf, num_patterns, 660 &dinfo->conf) == 0) { 661#endif 662 /* 663 * If we've filled up the user's buffer, 664 * break out at this point. Since we've 665 * got a match here, we'll pick right back 666 * up at the matching entry. We can also 667 * tell the user that there are more matches 668 * left. 669 */ 670 if (cio->num_matches >= ionum) 671 break; 672 673#ifdef PRE7_COMPAT 674#ifdef COMPAT_FREEBSD32 675 if (cmd == PCIOCGETCONF_OLD32) { 676 conf_old32.pc_sel.pc_bus = 677 dinfo->conf.pc_sel.pc_bus; 678 conf_old32.pc_sel.pc_dev = 679 dinfo->conf.pc_sel.pc_dev; 680 conf_old32.pc_sel.pc_func = 681 dinfo->conf.pc_sel.pc_func; 682 conf_old32.pc_hdr = dinfo->conf.pc_hdr; 683 conf_old32.pc_subvendor = 684 dinfo->conf.pc_subvendor; 685 conf_old32.pc_subdevice = 686 dinfo->conf.pc_subdevice; 687 conf_old32.pc_vendor = 688 dinfo->conf.pc_vendor; 689 conf_old32.pc_device = 690 dinfo->conf.pc_device; 691 conf_old32.pc_class = 692 dinfo->conf.pc_class; 693 conf_old32.pc_subclass = 694 dinfo->conf.pc_subclass; 695 conf_old32.pc_progif = 696 dinfo->conf.pc_progif; 697 conf_old32.pc_revid = 698 dinfo->conf.pc_revid; 699 strncpy(conf_old32.pd_name, 700 dinfo->conf.pd_name, 701 sizeof(conf_old32.pd_name)); 702 conf_old32.pd_name[PCI_MAXNAMELEN] = 0; 703 conf_old32.pd_unit = 704 (uint32_t)dinfo->conf.pd_unit; 705 confdata = &conf_old32; 706 } else 707#endif /* COMPAT_FREEBSD32 */ 708 if (cmd == PCIOCGETCONF_OLD) { 709 conf_old.pc_sel.pc_bus = 710 dinfo->conf.pc_sel.pc_bus; 711 conf_old.pc_sel.pc_dev = 712 dinfo->conf.pc_sel.pc_dev; 713 conf_old.pc_sel.pc_func = 714 dinfo->conf.pc_sel.pc_func; 715 conf_old.pc_hdr = dinfo->conf.pc_hdr; 716 conf_old.pc_subvendor = 717 dinfo->conf.pc_subvendor; 718 conf_old.pc_subdevice = 719 dinfo->conf.pc_subdevice; 720 conf_old.pc_vendor = 721 dinfo->conf.pc_vendor; 722 conf_old.pc_device = 723 dinfo->conf.pc_device; 724 conf_old.pc_class = 725 dinfo->conf.pc_class; 726 conf_old.pc_subclass = 727 dinfo->conf.pc_subclass; 728 conf_old.pc_progif = 729 dinfo->conf.pc_progif; 730 conf_old.pc_revid = 731 dinfo->conf.pc_revid; 732 strncpy(conf_old.pd_name, 733 dinfo->conf.pd_name, 734 sizeof(conf_old.pd_name)); 735 conf_old.pd_name[PCI_MAXNAMELEN] = 0; 736 conf_old.pd_unit = 737 dinfo->conf.pd_unit; 738 confdata = &conf_old; 739 } else 740#endif /* PRE7_COMPAT */ 741 confdata = &dinfo->conf; 742 /* Only if we can copy it out do we count it. */ 743 if (!(error = copyout(confdata, 744 (caddr_t)cio->matches + 745 confsz * cio->num_matches, confsz))) 746 cio->num_matches++; 747 } 748 } 749 750 /* 751 * Set the pointer into the list, so if the user is getting 752 * n records at a time, where n < pci_numdevs, 753 */ 754 cio->offset = i; 755 756 /* 757 * Set the generation, the user will need this if they make 758 * another ioctl call with offset != 0. 759 */ 760 cio->generation = pci_generation; 761 762 /* 763 * If this is the last device, inform the user so he won't 764 * bother asking for more devices. If dinfo isn't NULL, we 765 * know that there are more matches in the list because of 766 * the way the traversal is done. 767 */ 768 if (dinfo == NULL) 769 cio->status = PCI_GETCONF_LAST_DEVICE; 770 else 771 cio->status = PCI_GETCONF_MORE_DEVS; 772 773getconfexit: 774#ifdef PRE7_COMPAT 775#ifdef COMPAT_FREEBSD32 776 if (cmd == PCIOCGETCONF_OLD32) { 777 cio32->status = cio->status; 778 cio32->generation = cio->generation; 779 cio32->offset = cio->offset; 780 cio32->num_matches = cio->num_matches; 781 free(cio, M_TEMP); 782 } 783 if (pattern_buf_old32 != NULL) 784 free(pattern_buf_old32, M_TEMP); 785#endif 786 if (pattern_buf_old != NULL) 787 free(pattern_buf_old, M_TEMP); 788#endif 789 if (pattern_buf != NULL) 790 free(pattern_buf, M_TEMP); 791 792 break; 793 794#ifdef PRE7_COMPAT 795 case PCIOCREAD_OLD: 796 case PCIOCWRITE_OLD: 797 io_old = (struct pci_io_old *)data; 798 iodata.pi_sel.pc_domain = 0; 799 iodata.pi_sel.pc_bus = io_old->pi_sel.pc_bus; 800 iodata.pi_sel.pc_dev = io_old->pi_sel.pc_dev; 801 iodata.pi_sel.pc_func = io_old->pi_sel.pc_func; 802 iodata.pi_reg = io_old->pi_reg; 803 iodata.pi_width = io_old->pi_width; 804 iodata.pi_data = io_old->pi_data; 805 data = (caddr_t)&iodata; 806 /* FALLTHROUGH */ 807#endif 808 case PCIOCREAD: 809 case PCIOCWRITE: 810 io = (struct pci_io *)data; 811 switch(io->pi_width) { 812 case 4: 813 case 2: 814 case 1: 815 /* Make sure register is not negative and aligned. */ 816 if (io->pi_reg < 0 || 817 io->pi_reg & (io->pi_width - 1)) { 818 error = EINVAL; 819 break; 820 } 821 /* 822 * Assume that the user-level bus number is 823 * in fact the physical PCI bus number. 824 * Look up the grandparent, i.e. the bridge device, 825 * so that we can issue configuration space cycles. 826 */ 827 pcidev = pci_find_dbsf(io->pi_sel.pc_domain, 828 io->pi_sel.pc_bus, io->pi_sel.pc_dev, 829 io->pi_sel.pc_func); 830 if (pcidev) { 831 brdev = device_get_parent( 832 device_get_parent(pcidev)); 833 834#ifdef PRE7_COMPAT 835 if (cmd == PCIOCWRITE || cmd == PCIOCWRITE_OLD) 836#else 837 if (cmd == PCIOCWRITE) 838#endif 839 PCIB_WRITE_CONFIG(brdev, 840 io->pi_sel.pc_bus, 841 io->pi_sel.pc_dev, 842 io->pi_sel.pc_func, 843 io->pi_reg, 844 io->pi_data, 845 io->pi_width); 846#ifdef PRE7_COMPAT 847 else if (cmd == PCIOCREAD_OLD) 848 io_old->pi_data = 849 PCIB_READ_CONFIG(brdev, 850 io->pi_sel.pc_bus, 851 io->pi_sel.pc_dev, 852 io->pi_sel.pc_func, 853 io->pi_reg, 854 io->pi_width); 855#endif 856 else 857 io->pi_data = 858 PCIB_READ_CONFIG(brdev, 859 io->pi_sel.pc_bus, 860 io->pi_sel.pc_dev, 861 io->pi_sel.pc_func, 862 io->pi_reg, 863 io->pi_width); 864 error = 0; 865 } else { 866#ifdef COMPAT_FREEBSD4 867 if (cmd == PCIOCREAD_OLD) { 868 io_old->pi_data = -1; 869 error = 0; 870 } else 871#endif 872 error = ENODEV; 873 } 874 break; 875 default: 876 error = EINVAL; 877 break; 878 } 879 break; 880 881 case PCIOCGETBAR: 882 bio = (struct pci_bar_io *)data; 883 884 /* 885 * Assume that the user-level bus number is 886 * in fact the physical PCI bus number. 887 */ 888 pcidev = pci_find_dbsf(bio->pbi_sel.pc_domain, 889 bio->pbi_sel.pc_bus, bio->pbi_sel.pc_dev, 890 bio->pbi_sel.pc_func); 891 if (pcidev == NULL) { 892 error = ENODEV; 893 break; 894 } 895 pm = pci_find_bar(pcidev, bio->pbi_reg); 896 if (pm == NULL) { 897 error = EINVAL; 898 break; 899 } 900 bio->pbi_base = pm->pm_value; 901 bio->pbi_length = (pci_addr_t)1 << pm->pm_size; 902 bio->pbi_enabled = pci_bar_enabled(pcidev, pm); 903 error = 0; 904 break; 905 case PCIOCATTACHED: 906 error = 0; 907 io = (struct pci_io *)data; 908 pcidev = pci_find_dbsf(io->pi_sel.pc_domain, io->pi_sel.pc_bus, 909 io->pi_sel.pc_dev, io->pi_sel.pc_func); 910 if (pcidev != NULL) 911 io->pi_data = device_is_attached(pcidev); 912 else 913 error = ENODEV; 914 break; 915 default: 916 error = ENOTTY; 917 break; 918 } 919 920 return (error); 921} 922