1 /*- 2 * Copyright (c) 1997,1998 Doug Rabson 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, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include "opt_bus.h" 30 31 #include <sys/param.h> 32 #include <sys/queue.h> 33 #include <sys/malloc.h> 34 #include <sys/kernel.h> 35 #include <sys/module.h> 36 #ifdef DEVICE_SYSCTLS 37 #include <sys/sysctl.h> 38 #endif 39 #include <sys/bus_private.h> 40 #include <sys/systm.h> 41 #include <machine/bus.h> 42 #include <sys/rman.h> 43 #include <machine/stdarg.h> /* for device_printf() */ 44 45 MALLOC_DEFINE(M_BUS, "bus", "Bus data structures"); 46 47 #ifdef BUS_DEBUG 48 #define PDEBUG(a) (printf(__FUNCTION__ ":%d: ", __LINE__), printf a, printf("\n")) 49 #define DEVICENAME(d) ((d)? device_get_name(d): "no device") 50 #define DRIVERNAME(d) ((d)? d->name : "no driver") 51 #define DEVCLANAME(d) ((d)? d->name : "no devclass") 52 53 /* Produce the indenting, indent*2 spaces plus a '.' ahead of that to 54 * prevent syslog from deleting initial spaces 55 */ 56 #define indentprintf(p) do { int iJ; printf("."); for (iJ=0; iJ<indent; iJ++) printf(" "); printf p ; } while(0) 57 58 static void print_method_list(device_method_t *m, int indent); 59 static void print_device_ops(device_ops_t ops, int indent); 60 static void print_device_short(device_t dev, int indent); 61 static void print_device(device_t dev, int indent); 62 void print_device_tree_short(device_t dev, int indent); 63 void print_device_tree(device_t dev, int indent); 64 static void print_driver_short(driver_t *driver, int indent); 65 static void print_driver(driver_t *driver, int indent); 66 static void print_driver_list(driver_list_t drivers, int indent); 67 static void print_devclass_short(devclass_t dc, int indent); 68 static void print_devclass(devclass_t dc, int indent); 69 void print_devclass_list_short(void); 70 void print_devclass_list(void); 71 72 #else 73 /* Make the compiler ignore the function calls */ 74 #define PDEBUG(a) /* nop */ 75 #define DEVICENAME(d) /* nop */ 76 #define DRIVERNAME(d) /* nop */ 77 #define DEVCLANAME(d) /* nop */ 78 79 #define print_method_list(m,i) /* nop */ 80 #define print_device_ops(o,i) /* nop */ 81 #define print_device_short(d,i) /* nop */ 82 #define print_device(d,i) /* nop */ 83 #define print_device_tree_short(d,i) /* nop */ 84 #define print_device_tree(d,i) /* nop */ 85 #define print_driver_short(d,i) /* nop */ 86 #define print_driver(d,i) /* nop */ 87 #define print_driver_list(d,i) /* nop */ 88 #define print_devclass_short(d,i) /* nop */ 89 #define print_devclass(d,i) /* nop */ 90 #define print_devclass_list_short() /* nop */ 91 #define print_devclass_list() /* nop */ 92 #endif 93 94 #ifdef DEVICE_SYSCTLS 95 static void device_register_oids(device_t dev); 96 static void device_unregister_oids(device_t dev); 97 #endif 98 99 /* 100 * Method table handling 101 */ 102 static int error_method(void); 103 static int next_method_offset = 1; 104 105 LIST_HEAD(methodlist, method) methods; 106 struct method { 107 LIST_ENTRY(method) link; /* linked list of methods */ 108 int offset; /* offset in method table */ 109 int refs; /* count of device_op_desc users */ 110 devop_t deflt; /* default implementation */ 111 char* name; /* unique name of method */ 112 }; 113 114 static void 115 register_method(struct device_op_desc *desc) 116 { 117 struct method* m; 118 119 if (desc->method) { 120 desc->method->refs++; 121 return; 122 } 123 124 /* 125 * Make sure that desc->deflt is always valid to simplify dispatch. 126 */ 127 if (!desc->deflt) 128 desc->deflt = error_method; 129 130 for (m = LIST_FIRST(&methods); m; m = LIST_NEXT(m, link)) { 131 if (!strcmp(m->name, desc->name)) { 132 desc->offset = m->offset; 133 desc->method = m; 134 m->refs++; 135 PDEBUG(("method %p has the same name, %s, with offset %d", 136 (void *)m, desc->name, desc->offset)); 137 return; 138 } 139 } 140 141 m = (struct method *) malloc(sizeof(struct method) 142 + strlen(desc->name) + 1, 143 M_BUS, M_NOWAIT); 144 if (!m) 145 panic("register_method: out of memory"); 146 bzero(m, sizeof(struct method) + strlen(desc->name) + 1); 147 m->offset = next_method_offset++; 148 m->refs = 1; 149 m->deflt = desc->deflt; 150 m->name = (char*) (m + 1); 151 strcpy(m->name, desc->name); 152 LIST_INSERT_HEAD(&methods, m, link); 153 154 desc->offset = m->offset; 155 desc->method = m; 156 } 157 158 static void 159 unregister_method(struct device_op_desc *desc) 160 { 161 struct method *m = desc->method; 162 m->refs--; 163 if (m->refs == 0) { 164 PDEBUG(("method %s, reached refcount 0", desc->name)); 165 LIST_REMOVE(m, link); 166 free(m, M_BUS); 167 desc->method = 0; 168 } 169 } 170 171 static int error_method(void) 172 { 173 return ENXIO; 174 } 175 176 static struct device_ops null_ops = { 177 1, 178 { error_method } 179 }; 180 181 static void 182 compile_methods(driver_t *driver) 183 { 184 device_ops_t ops; 185 struct device_method *m; 186 struct method *cm; 187 int i; 188 189 /* 190 * First register any methods which need it. 191 */ 192 for (i = 0, m = driver->methods; m->desc; i++, m++) 193 register_method(m->desc); 194 195 /* 196 * Then allocate the compiled op table. 197 */ 198 ops = malloc(sizeof(struct device_ops) + (next_method_offset-1) * sizeof(devop_t), 199 M_BUS, M_NOWAIT); 200 if (!ops) 201 panic("compile_methods: out of memory"); 202 bzero(ops, sizeof(struct device_ops) + (next_method_offset-1) * sizeof(devop_t)); 203 204 ops->maxoffset = next_method_offset; 205 /* Fill in default methods and then overwrite with driver methods */ 206 for (i = 0; i < next_method_offset; i++) 207 ops->methods[i] = error_method; 208 for (cm = LIST_FIRST(&methods); cm; cm = LIST_NEXT(cm, link)) { 209 if (cm->deflt) 210 ops->methods[cm->offset] = cm->deflt; 211 } 212 for (i = 0, m = driver->methods; m->desc; i++, m++) 213 ops->methods[m->desc->offset] = m->func; 214 PDEBUG(("%s has %d method%s, wasting %d bytes", 215 DRIVERNAME(driver), i, (i==1?"":"s"), 216 (next_method_offset-i)*sizeof(devop_t))); 217 218 driver->ops = ops; 219 } 220 221 static void 222 free_methods(driver_t *driver) 223 { 224 int i; 225 struct device_method *m; 226 227 /* 228 * Unregister any methods which are no longer used. 229 */ 230 for (i = 0, m = driver->methods; m->desc; i++, m++) 231 unregister_method(m->desc); 232 233 /* 234 * Free memory and clean up. 235 */ 236 free(driver->ops, M_BUS); 237 driver->ops = 0; 238 } 239 240 /* 241 * Devclass implementation 242 */ 243 244 static devclass_list_t devclasses = TAILQ_HEAD_INITIALIZER(devclasses); 245 246 static devclass_t 247 devclass_find_internal(const char *classname, int create) 248 { 249 devclass_t dc; 250 251 PDEBUG(("looking for %s", classname)); 252 if (!classname) 253 return NULL; 254 255 for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) 256 if (!strcmp(dc->name, classname)) 257 return dc; 258 259 PDEBUG(("%s not found%s", classname, (create? ", creating": ""))); 260 if (create) { 261 dc = malloc(sizeof(struct devclass) + strlen(classname) + 1, 262 M_BUS, M_NOWAIT); 263 if (!dc) 264 return NULL; 265 bzero(dc, sizeof(struct devclass) + strlen(classname) + 1); 266 dc->name = (char*) (dc + 1); 267 strcpy(dc->name, classname); 268 dc->devices = NULL; 269 dc->maxunit = 0; 270 dc->nextunit = 0; 271 TAILQ_INIT(&dc->drivers); 272 TAILQ_INSERT_TAIL(&devclasses, dc, link); 273 } 274 275 return dc; 276 } 277 278 devclass_t 279 devclass_create(const char *classname) 280 { 281 return devclass_find_internal(classname, TRUE); 282 } 283 284 devclass_t 285 devclass_find(const char *classname) 286 { 287 return devclass_find_internal(classname, FALSE); 288 } 289 290 int 291 devclass_add_driver(devclass_t dc, driver_t *driver) 292 { 293 driverlink_t dl; 294 int i; 295 296 PDEBUG(("%s", DRIVERNAME(driver))); 297 298 dl = malloc(sizeof *dl, M_BUS, M_NOWAIT); 299 if (!dl) 300 return ENOMEM; 301 bzero(dl, sizeof *dl); 302 303 /* 304 * Compile the driver's methods. 305 */ 306 if (!driver->ops) 307 compile_methods(driver); 308 309 /* 310 * Make sure the devclass which the driver is implementing exists. 311 */ 312 devclass_find_internal(driver->name, TRUE); 313 314 dl->driver = driver; 315 TAILQ_INSERT_TAIL(&dc->drivers, dl, link); 316 driver->refs++; 317 318 /* 319 * Call BUS_DRIVER_ADDED for any existing busses in this class. 320 */ 321 for (i = 0; i < dc->maxunit; i++) 322 if (dc->devices[i]) 323 BUS_DRIVER_ADDED(dc->devices[i], driver); 324 325 return 0; 326 } 327 328 int 329 devclass_delete_driver(devclass_t busclass, driver_t *driver) 330 { 331 devclass_t dc = devclass_find(driver->name); 332 driverlink_t dl; 333 device_t dev; 334 int i; 335 int error; 336 337 PDEBUG(("%s from devclass %s", driver->name, DEVCLANAME(busclass))); 338 339 if (!dc) 340 return 0; 341 342 /* 343 * Find the link structure in the bus' list of drivers. 344 */ 345 for (dl = TAILQ_FIRST(&busclass->drivers); dl; 346 dl = TAILQ_NEXT(dl, link)) { 347 if (dl->driver == driver) 348 break; 349 } 350 351 if (!dl) { 352 PDEBUG(("%s not found in %s list", driver->name, busclass->name)); 353 return ENOENT; 354 } 355 356 /* 357 * Disassociate from any devices. We iterate through all the 358 * devices in the devclass of the driver and detach any which are 359 * using the driver and which have a parent in the devclass which 360 * we are deleting from. 361 * 362 * Note that since a driver can be in multiple devclasses, we 363 * should not detach devices which are not children of devices in 364 * the affected devclass. 365 */ 366 for (i = 0; i < dc->maxunit; i++) { 367 if (dc->devices[i]) { 368 dev = dc->devices[i]; 369 if (dev->driver == driver 370 && dev->parent && dev->parent->devclass == busclass) { 371 if ((error = device_detach(dev)) != 0) 372 return error; 373 device_set_driver(dev, NULL); 374 } 375 } 376 } 377 378 TAILQ_REMOVE(&busclass->drivers, dl, link); 379 free(dl, M_BUS); 380 381 driver->refs--; 382 if (driver->refs == 0) 383 free_methods(driver); 384 385 return 0; 386 } 387 388 static driverlink_t 389 devclass_find_driver_internal(devclass_t dc, const char *classname) 390 { 391 driverlink_t dl; 392 393 PDEBUG(("%s in devclass %s", classname, DEVCLANAME(dc))); 394 395 for (dl = TAILQ_FIRST(&dc->drivers); dl; dl = TAILQ_NEXT(dl, link)) { 396 if (!strcmp(dl->driver->name, classname)) 397 return dl; 398 } 399 400 PDEBUG(("not found")); 401 return NULL; 402 } 403 404 driver_t * 405 devclass_find_driver(devclass_t dc, const char *classname) 406 { 407 driverlink_t dl; 408 409 dl = devclass_find_driver_internal(dc, classname); 410 if (dl) 411 return dl->driver; 412 else 413 return NULL; 414 } 415 416 const char * 417 devclass_get_name(devclass_t dc) 418 { 419 return dc->name; 420 } 421 422 device_t 423 devclass_get_device(devclass_t dc, int unit) 424 { 425 if (dc == NULL || unit < 0 || unit >= dc->maxunit) 426 return NULL; 427 return dc->devices[unit]; 428 } 429 430 void * 431 devclass_get_softc(devclass_t dc, int unit) 432 { 433 device_t dev; 434 435 if (unit < 0 || unit >= dc->maxunit) 436 return NULL; 437 dev = dc->devices[unit]; 438 if (!dev || dev->state < DS_ATTACHED) 439 return NULL; 440 return dev->softc; 441 } 442 443 int 444 devclass_get_devices(devclass_t dc, device_t **devlistp, int *devcountp) 445 { 446 int i; 447 int count; 448 device_t *list; 449 450 count = 0; 451 for (i = 0; i < dc->maxunit; i++) 452 if (dc->devices[i]) 453 count++; 454 455 list = malloc(count * sizeof(device_t), M_TEMP, M_NOWAIT); 456 if (!list) 457 return ENOMEM; 458 bzero(list, count * sizeof(device_t)); 459 460 count = 0; 461 for (i = 0; i < dc->maxunit; i++) 462 if (dc->devices[i]) { 463 list[count] = dc->devices[i]; 464 count++; 465 } 466 467 *devlistp = list; 468 *devcountp = count; 469 470 return 0; 471 } 472 473 int 474 devclass_get_maxunit(devclass_t dc) 475 { 476 return dc->maxunit; 477 } 478 479 static int 480 devclass_alloc_unit(devclass_t dc, int *unitp) 481 { 482 int unit = *unitp; 483 484 PDEBUG(("unit %d in devclass %s", unit, DEVCLANAME(dc))); 485 486 /* 487 * If we have been given a wired unit number, check for existing 488 * device. 489 */ 490 if (unit != -1) { 491 device_t dev; 492 dev = devclass_get_device(dc, unit); 493 if (dev) { 494 printf("devclass_alloc_unit: %s%d already exists, using next available unit number\n", dc->name, unit); 495 unit = -1; 496 } 497 } 498 499 if (unit == -1) { 500 unit = dc->nextunit; 501 dc->nextunit++; 502 } else if (dc->nextunit <= unit) 503 dc->nextunit = unit + 1; 504 505 if (unit >= dc->maxunit) { 506 device_t *newlist; 507 int newsize; 508 509 newsize = (dc->maxunit ? 2 * dc->maxunit 510 : MINALLOCSIZE / sizeof(device_t)); 511 newlist = malloc(sizeof(device_t) * newsize, M_BUS, M_NOWAIT); 512 if (!newlist) 513 return ENOMEM; 514 bcopy(dc->devices, newlist, sizeof(device_t) * dc->maxunit); 515 bzero(newlist + dc->maxunit, 516 sizeof(device_t) * (newsize - dc->maxunit)); 517 if (dc->devices) 518 free(dc->devices, M_BUS); 519 dc->devices = newlist; 520 dc->maxunit = newsize; 521 } 522 PDEBUG(("now: unit %d in devclass %s", unit, DEVCLANAME(dc))); 523 524 *unitp = unit; 525 return 0; 526 } 527 528 static int 529 devclass_add_device(devclass_t dc, device_t dev) 530 { 531 int buflen, error; 532 533 PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); 534 535 buflen = strlen(dc->name) + 5; 536 dev->nameunit = malloc(buflen, M_BUS, M_NOWAIT); 537 if (!dev->nameunit) 538 return ENOMEM; 539 bzero(dev->nameunit, buflen); 540 541 if ((error = devclass_alloc_unit(dc, &dev->unit)) != 0) { 542 free(dev->nameunit, M_BUS); 543 dev->nameunit = NULL; 544 return error; 545 } 546 dc->devices[dev->unit] = dev; 547 dev->devclass = dc; 548 snprintf(dev->nameunit, buflen, "%s%d", dc->name, dev->unit); 549 550 #ifdef DEVICE_SYSCTLS 551 device_register_oids(dev); 552 #endif 553 554 return 0; 555 } 556 557 static int 558 devclass_delete_device(devclass_t dc, device_t dev) 559 { 560 if (!dc || !dev) 561 return 0; 562 563 PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); 564 565 if (dev->devclass != dc 566 || dc->devices[dev->unit] != dev) 567 panic("devclass_delete_device: inconsistent device class"); 568 dc->devices[dev->unit] = NULL; 569 if (dev->flags & DF_WILDCARD) 570 dev->unit = -1; 571 dev->devclass = NULL; 572 free(dev->nameunit, M_BUS); 573 dev->nameunit = NULL; 574 while (dc->nextunit > 0 && dc->devices[dc->nextunit - 1] == NULL) 575 dc->nextunit--; 576 577 #ifdef DEVICE_SYSCTLS 578 device_unregister_oids(dev); 579 #endif 580 581 return 0; 582 } 583 584 static device_t 585 make_device(device_t parent, const char *name, 586 int unit, void *ivars) 587 { 588 device_t dev; 589 devclass_t dc; 590 591 PDEBUG(("%s at %s as unit %d with%s ivars", 592 name, DEVICENAME(parent), unit, (ivars? "":"out"))); 593 594 if (name) { 595 dc = devclass_find_internal(name, TRUE); 596 if (!dc) { 597 printf("make_device: can't find device class %s\n", name); 598 return NULL; 599 } 600 } else 601 dc = NULL; 602 603 dev = malloc(sizeof(struct device), M_BUS, M_NOWAIT); 604 if (!dev) 605 return 0; 606 bzero(dev, sizeof(struct device)); 607 608 dev->parent = parent; 609 TAILQ_INIT(&dev->children); 610 dev->ops = &null_ops; 611 dev->driver = NULL; 612 dev->devclass = NULL; 613 dev->unit = unit; 614 dev->nameunit = NULL; 615 dev->desc = NULL; 616 dev->busy = 0; 617 dev->devflags = 0; 618 dev->flags = DF_ENABLED; 619 dev->order = 0; 620 if (unit == -1) 621 dev->flags |= DF_WILDCARD; 622 if (name) { 623 dev->flags |= DF_FIXEDCLASS; 624 devclass_add_device(dc, dev); 625 } 626 dev->ivars = ivars; 627 dev->softc = NULL; 628 629 dev->state = DS_NOTPRESENT; 630 631 return dev; 632 } 633 634 static int 635 device_print_child(device_t dev, device_t child) 636 { 637 int retval = 0; 638 639 if (device_is_alive(child)) { 640 retval += BUS_PRINT_CHILD(dev, child); 641 } else 642 retval += device_printf(child, " not found\n"); 643 644 return (retval); 645 } 646 647 device_t 648 device_add_child(device_t dev, const char *name, int unit, void *ivars) 649 { 650 return device_add_child_ordered(dev, 0, name, unit, ivars); 651 } 652 653 device_t 654 device_add_child_ordered(device_t dev, int order, 655 const char *name, int unit, void *ivars) 656 { 657 device_t child; 658 device_t place; 659 660 PDEBUG(("%s at %s with order %d as unit %d with%s ivars", 661 name, DEVICENAME(dev), order, unit, (ivars? "":"out"))); 662 663 child = make_device(dev, name, unit, ivars); 664 if (child == NULL) 665 return child; 666 child->order = order; 667 668 TAILQ_FOREACH(place, &dev->children, link) 669 if (place->order > order) 670 break; 671 672 if (place) { 673 /* 674 * The device 'place' is the first device whose order is 675 * greater than the new child. 676 */ 677 TAILQ_INSERT_BEFORE(place, child, link); 678 } else { 679 /* 680 * The new child's order is greater or equal to the order of 681 * any existing device. Add the child to the tail of the list. 682 */ 683 TAILQ_INSERT_TAIL(&dev->children, child, link); 684 } 685 686 return child; 687 } 688 689 int 690 device_delete_child(device_t dev, device_t child) 691 { 692 int error; 693 device_t grandchild; 694 695 PDEBUG(("%s from %s", DEVICENAME(child), DEVICENAME(dev))); 696 697 /* remove children first */ 698 while ( (grandchild = TAILQ_FIRST(&child->children)) ) { 699 error = device_delete_child(child, grandchild); 700 if (error) 701 return error; 702 } 703 704 if ((error = device_detach(child)) != 0) 705 return error; 706 if (child->devclass) 707 devclass_delete_device(child->devclass, child); 708 TAILQ_REMOVE(&dev->children, child, link); 709 device_set_desc(child, NULL); 710 free(child, M_BUS); 711 712 return 0; 713 } 714 715 /* 716 * Find only devices attached to this bus. 717 */ 718 device_t 719 device_find_child(device_t dev, const char *classname, int unit) 720 { 721 devclass_t dc; 722 device_t child; 723 724 dc = devclass_find(classname); 725 if (!dc) 726 return NULL; 727 728 child = devclass_get_device(dc, unit); 729 if (child && child->parent == dev) 730 return child; 731 return NULL; 732 } 733 734 static driverlink_t 735 first_matching_driver(devclass_t dc, device_t dev) 736 { 737 if (dev->devclass) 738 return devclass_find_driver_internal(dc, dev->devclass->name); 739 else 740 return TAILQ_FIRST(&dc->drivers); 741 } 742 743 static driverlink_t 744 next_matching_driver(devclass_t dc, device_t dev, driverlink_t last) 745 { 746 if (dev->devclass) { 747 driverlink_t dl; 748 for (dl = TAILQ_NEXT(last, link); dl; dl = TAILQ_NEXT(dl, link)) 749 if (!strcmp(dev->devclass->name, dl->driver->name)) 750 return dl; 751 return NULL; 752 } else 753 return TAILQ_NEXT(last, link); 754 } 755 756 static int 757 device_probe_child(device_t dev, device_t child) 758 { 759 devclass_t dc; 760 driverlink_t best = 0; 761 driverlink_t dl; 762 int result, pri = 0; 763 764 dc = dev->devclass; 765 if (dc == NULL) 766 panic("device_probe_child: parent device has no devclass"); 767 768 if (child->state == DS_ALIVE) 769 return 0; 770 771 for (dl = first_matching_driver(dc, child); 772 dl; 773 dl = next_matching_driver(dc, child, dl)) { 774 PDEBUG(("Trying %s", DRIVERNAME(dl->driver))); 775 device_set_driver(child, dl->driver); 776 result = DEVICE_PROBE(child); 777 778 /* 779 * If the driver returns SUCCESS, there can be no higher match 780 * for this device. 781 */ 782 if (result == 0) { 783 best = dl; 784 pri = 0; 785 break; 786 } 787 788 /* 789 * The driver returned an error so it certainly doesn't match. 790 */ 791 if (result > 0) 792 continue; 793 794 /* 795 * A priority lower than SUCCESS, remember the best matching 796 * driver. Initialise the value of pri for the first match. 797 */ 798 if (best == 0 || result > pri) { 799 best = dl; 800 pri = result; 801 continue; 802 } 803 } 804 805 /* 806 * If we found a driver, change state and initialise the devclass. 807 */ 808 if (best) { 809 if (!child->devclass) 810 device_set_devclass(child, best->driver->name); 811 device_set_driver(child, best->driver); 812 if (pri < 0) { 813 /* 814 * A bit bogus. Call the probe method again to make sure 815 * that we have the right description. 816 */ 817 DEVICE_PROBE(child); 818 } 819 child->state = DS_ALIVE; 820 return 0; 821 } 822 823 return ENXIO; 824 } 825 826 device_t 827 device_get_parent(device_t dev) 828 { 829 return dev->parent; 830 } 831 832 int 833 device_get_children(device_t dev, device_t **devlistp, int *devcountp) 834 { 835 int count; 836 device_t child; 837 device_t *list; 838 839 count = 0; 840 for (child = TAILQ_FIRST(&dev->children); child; 841 child = TAILQ_NEXT(child, link)) 842 count++; 843 844 list = malloc(count * sizeof(device_t), M_TEMP, M_NOWAIT); 845 if (!list) 846 return ENOMEM; 847 bzero(list, count * sizeof(device_t)); 848 849 count = 0; 850 for (child = TAILQ_FIRST(&dev->children); child; 851 child = TAILQ_NEXT(child, link)) { 852 list[count] = child; 853 count++; 854 } 855 856 *devlistp = list; 857 *devcountp = count; 858 859 return 0; 860 } 861 862 driver_t * 863 device_get_driver(device_t dev) 864 { 865 return dev->driver; 866 } 867 868 devclass_t 869 device_get_devclass(device_t dev) 870 { 871 return dev->devclass; 872 } 873 874 const char * 875 device_get_name(device_t dev) 876 { 877 if (dev->devclass) 878 return devclass_get_name(dev->devclass); 879 return NULL; 880 } 881 882 const char * 883 device_get_nameunit(device_t dev) 884 { 885 return dev->nameunit; 886 } 887 888 int 889 device_get_unit(device_t dev) 890 { 891 return dev->unit; 892 } 893 894 const char * 895 device_get_desc(device_t dev) 896 { 897 return dev->desc; 898 } 899 900 u_int32_t 901 device_get_flags(device_t dev) 902 { 903 return dev->devflags; 904 } 905 906 int 907 device_print_prettyname(device_t dev) 908 { 909 const char *name = device_get_name(dev); 910 911 if (name == 0) 912 return printf("unknown: "); 913 else 914 return printf("%s%d: ", name, device_get_unit(dev)); 915 } 916 917 int 918 device_printf(device_t dev, const char * fmt, ...) 919 { 920 va_list ap; 921 int retval; 922 923 retval = device_print_prettyname(dev); 924 va_start(ap, fmt); 925 retval += vprintf(fmt, ap); 926 va_end(ap); 927 return retval; 928 } 929 930 static void 931 device_set_desc_internal(device_t dev, const char* desc, int copy) 932 { 933 if (dev->desc && (dev->flags & DF_DESCMALLOCED)) { 934 free(dev->desc, M_BUS); 935 dev->flags &= ~DF_DESCMALLOCED; 936 dev->desc = NULL; 937 } 938 939 if (copy && desc) { 940 dev->desc = malloc(strlen(desc) + 1, M_BUS, M_NOWAIT); 941 if (dev->desc) { 942 strcpy(dev->desc, desc); 943 dev->flags |= DF_DESCMALLOCED; 944 } 945 } else 946 /* Avoid a -Wcast-qual warning */ 947 dev->desc = (char *)(uintptr_t) desc; 948 949 #ifdef DEVICE_SYSCTLS 950 { 951 struct sysctl_oid *oid = &dev->oid[1]; 952 oid->oid_arg1 = dev->desc ? dev->desc : ""; 953 oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0; 954 } 955 #endif 956 } 957 958 void 959 device_set_desc(device_t dev, const char* desc) 960 { 961 device_set_desc_internal(dev, desc, FALSE); 962 } 963 964 void 965 device_set_desc_copy(device_t dev, const char* desc) 966 { 967 device_set_desc_internal(dev, desc, TRUE); 968 } 969 970 void 971 device_set_flags(device_t dev, u_int32_t flags) 972 { 973 dev->devflags = flags; 974 } 975 976 void * 977 device_get_softc(device_t dev) 978 { 979 return dev->softc; 980 } 981 982 void * 983 device_get_ivars(device_t dev) 984 { 985 return dev->ivars; 986 } 987 988 device_state_t 989 device_get_state(device_t dev) 990 { 991 return dev->state; 992 } 993 994 void 995 device_enable(device_t dev) 996 { 997 dev->flags |= DF_ENABLED; 998 } 999 1000 void 1001 device_disable(device_t dev) 1002 { 1003 dev->flags &= ~DF_ENABLED; 1004 } 1005 1006 void 1007 device_busy(device_t dev) 1008 { 1009 if (dev->state < DS_ATTACHED) 1010 panic("device_busy: called for unattached device"); 1011 if (dev->busy == 0 && dev->parent) 1012 device_busy(dev->parent); 1013 dev->busy++; 1014 dev->state = DS_BUSY; 1015 } 1016 1017 void 1018 device_unbusy(device_t dev) 1019 { 1020 if (dev->state != DS_BUSY) 1021 panic("device_unbusy: called for non-busy device"); 1022 dev->busy--; 1023 if (dev->busy == 0) { 1024 if (dev->parent) 1025 device_unbusy(dev->parent); 1026 dev->state = DS_ATTACHED; 1027 } 1028 } 1029 1030 void 1031 device_quiet(device_t dev) 1032 { 1033 dev->flags |= DF_QUIET; 1034 } 1035 1036 void 1037 device_verbose(device_t dev) 1038 { 1039 dev->flags &= ~DF_QUIET; 1040 } 1041 1042 int 1043 device_is_quiet(device_t dev) 1044 { 1045 return (dev->flags & DF_QUIET) != 0; 1046 } 1047 1048 int 1049 device_is_enabled(device_t dev) 1050 { 1051 return (dev->flags & DF_ENABLED) != 0; 1052 } 1053 1054 int 1055 device_is_alive(device_t dev) 1056 { 1057 return dev->state >= DS_ALIVE; 1058 } 1059 1060 int 1061 device_set_devclass(device_t dev, const char *classname) 1062 { 1063 devclass_t dc; 1064 1065 if (dev->devclass) { 1066 printf("device_set_devclass: device class already set\n"); 1067 return EINVAL; 1068 } 1069 1070 dc = devclass_find_internal(classname, TRUE); 1071 if (!dc) 1072 return ENOMEM; 1073 1074 return devclass_add_device(dc, dev); 1075 } 1076 1077 int 1078 device_set_driver(device_t dev, driver_t *driver) 1079 { 1080 if (dev->state >= DS_ATTACHED) 1081 return EBUSY; 1082 1083 if (dev->driver == driver) 1084 return 0; 1085 1086 if (dev->softc) { 1087 free(dev->softc, M_BUS); 1088 dev->softc = NULL; 1089 } 1090 dev->ops = &null_ops; 1091 dev->driver = driver; 1092 if (driver) { 1093 dev->ops = driver->ops; 1094 dev->softc = malloc(driver->softc, M_BUS, M_NOWAIT); 1095 if (!dev->softc) { 1096 dev->ops = &null_ops; 1097 dev->driver = NULL; 1098 return ENOMEM; 1099 } 1100 bzero(dev->softc, driver->softc); 1101 } 1102 return 0; 1103 } 1104 1105 int 1106 device_probe_and_attach(device_t dev) 1107 { 1108 device_t bus = dev->parent; 1109 int error = 0; 1110 1111 if (dev->state >= DS_ALIVE) 1112 return 0; 1113 1114 if (dev->flags & DF_ENABLED) { 1115 error = device_probe_child(bus, dev); 1116 if (!error) { 1117 if (!device_is_quiet(dev)) 1118 device_print_child(bus, dev); 1119 error = DEVICE_ATTACH(dev); 1120 if (!error) 1121 dev->state = DS_ATTACHED; 1122 else { 1123 printf("device_probe_and_attach: %s%d attach returned %d\n", 1124 dev->driver->name, dev->unit, error); 1125 device_set_driver(dev, NULL); 1126 dev->state = DS_NOTPRESENT; 1127 } 1128 } else { 1129 BUS_PROBE_NOMATCH(bus, dev); 1130 } 1131 } else { 1132 device_print_prettyname(dev); 1133 printf("not probed (disabled)\n"); 1134 } 1135 1136 return error; 1137 } 1138 1139 int 1140 device_detach(device_t dev) 1141 { 1142 int error; 1143 1144 PDEBUG(("%s", DEVICENAME(dev))); 1145 if (dev->state == DS_BUSY) 1146 return EBUSY; 1147 if (dev->state != DS_ATTACHED) 1148 return 0; 1149 1150 if ((error = DEVICE_DETACH(dev)) != 0) 1151 return error; 1152 if (dev->parent) 1153 BUS_CHILD_DETACHED(dev->parent, dev); 1154 1155 if (!(dev->flags & DF_FIXEDCLASS)) 1156 devclass_delete_device(dev->devclass, dev); 1157 1158 dev->state = DS_NOTPRESENT; 1159 device_set_driver(dev, NULL); 1160 1161 return 0; 1162 } 1163 1164 int 1165 device_shutdown(device_t dev) 1166 { 1167 if (dev->state < DS_ATTACHED) 1168 return 0; 1169 return DEVICE_SHUTDOWN(dev); 1170 } 1171 1172 #ifdef DEVICE_SYSCTLS 1173 1174 /* 1175 * Sysctl nodes for devices. 1176 */ 1177 1178 SYSCTL_NODE(_hw, OID_AUTO, devices, CTLFLAG_RW, 0, "A list of all devices"); 1179 1180 static int 1181 sysctl_handle_children SYSCTL_HANDLER_ARGS 1182 { 1183 device_t dev = arg1; 1184 device_t child; 1185 int first = 1, error = 0; 1186 1187 for (child = TAILQ_FIRST(&dev->children); child; 1188 child = TAILQ_NEXT(child, link)) { 1189 if (child->nameunit) { 1190 if (!first) { 1191 error = SYSCTL_OUT(req, ",", 1); 1192 if (error) return error; 1193 } else { 1194 first = 0; 1195 } 1196 error = SYSCTL_OUT(req, child->nameunit, strlen(child->nameunit)); 1197 if (error) return error; 1198 } 1199 } 1200 1201 error = SYSCTL_OUT(req, "", 1); 1202 1203 return error; 1204 } 1205 1206 static int 1207 sysctl_handle_state SYSCTL_HANDLER_ARGS 1208 { 1209 device_t dev = arg1; 1210 1211 switch (dev->state) { 1212 case DS_NOTPRESENT: 1213 return SYSCTL_OUT(req, "notpresent", sizeof("notpresent")); 1214 case DS_ALIVE: 1215 return SYSCTL_OUT(req, "alive", sizeof("alive")); 1216 case DS_ATTACHED: 1217 return SYSCTL_OUT(req, "attached", sizeof("attached")); 1218 case DS_BUSY: 1219 return SYSCTL_OUT(req, "busy", sizeof("busy")); 1220 } 1221 1222 return 0; 1223 } 1224 1225 static void 1226 device_register_oids(device_t dev) 1227 { 1228 struct sysctl_oid* oid; 1229 1230 oid = &dev->oid[0]; 1231 bzero(oid, sizeof(*oid)); 1232 oid->oid_parent = &sysctl__hw_devices_children; 1233 oid->oid_number = OID_AUTO; 1234 oid->oid_kind = CTLTYPE_NODE | CTLFLAG_RW; 1235 oid->oid_arg1 = &dev->oidlist[0]; 1236 oid->oid_arg2 = 0; 1237 oid->oid_name = dev->nameunit; 1238 oid->oid_handler = 0; 1239 oid->oid_fmt = "N"; 1240 SLIST_INIT(&dev->oidlist[0]); 1241 sysctl_register_oid(oid); 1242 1243 oid = &dev->oid[1]; 1244 bzero(oid, sizeof(*oid)); 1245 oid->oid_parent = &dev->oidlist[0]; 1246 oid->oid_number = OID_AUTO; 1247 oid->oid_kind = CTLTYPE_STRING | CTLFLAG_RD; 1248 oid->oid_arg1 = dev->desc ? dev->desc : ""; 1249 oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0; 1250 oid->oid_name = "desc"; 1251 oid->oid_handler = sysctl_handle_string; 1252 oid->oid_fmt = "A"; 1253 sysctl_register_oid(oid); 1254 1255 oid = &dev->oid[2]; 1256 bzero(oid, sizeof(*oid)); 1257 oid->oid_parent = &dev->oidlist[0]; 1258 oid->oid_number = OID_AUTO; 1259 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD; 1260 oid->oid_arg1 = dev; 1261 oid->oid_arg2 = 0; 1262 oid->oid_name = "children"; 1263 oid->oid_handler = sysctl_handle_children; 1264 oid->oid_fmt = "A"; 1265 sysctl_register_oid(oid); 1266 1267 oid = &dev->oid[3]; 1268 bzero(oid, sizeof(*oid)); 1269 oid->oid_parent = &dev->oidlist[0]; 1270 oid->oid_number = OID_AUTO; 1271 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD; 1272 oid->oid_arg1 = dev; 1273 oid->oid_arg2 = 0; 1274 oid->oid_name = "state"; 1275 oid->oid_handler = sysctl_handle_state; 1276 oid->oid_fmt = "A"; 1277 sysctl_register_oid(oid); 1278 } 1279 1280 static void 1281 device_unregister_oids(device_t dev) 1282 { 1283 sysctl_unregister_oid(&dev->oid[0]); 1284 sysctl_unregister_oid(&dev->oid[1]); 1285 sysctl_unregister_oid(&dev->oid[2]); 1286 } 1287 1288 #endif 1289 1290 /*======================================*/ 1291 /* 1292 * Access functions for device resources. 1293 */ 1294 1295 /* Supplied by config(8) in ioconf.c */ 1296 extern struct config_device config_devtab[]; 1297 extern int devtab_count; 1298 1299 /* Runtime version */ 1300 struct config_device *devtab = config_devtab; 1301 1302 static int 1303 resource_new_name(char *name, int unit) 1304 { 1305 struct config_device *new; 1306 1307 new = malloc((devtab_count + 1) * sizeof(*new), M_TEMP, M_NOWAIT); 1308 if (new == NULL) 1309 return -1; 1310 if (devtab && devtab_count > 0) 1311 bcopy(devtab, new, devtab_count * sizeof(*new)); 1312 bzero(&new[devtab_count], sizeof(*new)); 1313 new[devtab_count].name = malloc(strlen(name) + 1, M_TEMP, M_NOWAIT); 1314 if (new[devtab_count].name == NULL) { 1315 free(new, M_TEMP); 1316 return -1; 1317 } 1318 strcpy(new[devtab_count].name, name); 1319 new[devtab_count].unit = unit; 1320 new[devtab_count].resource_count = 0; 1321 new[devtab_count].resources = NULL; 1322 devtab = new; 1323 return devtab_count++; 1324 } 1325 1326 static int 1327 resource_new_resname(int j, char *resname, resource_type type) 1328 { 1329 struct config_resource *new; 1330 int i; 1331 1332 i = devtab[j].resource_count; 1333 new = malloc((i + 1) * sizeof(*new), M_TEMP, M_NOWAIT); 1334 if (new == NULL) 1335 return -1; 1336 if (devtab[j].resources && i > 0) 1337 bcopy(devtab[j].resources, new, i * sizeof(*new)); 1338 bzero(&new[i], sizeof(*new)); 1339 new[i].name = malloc(strlen(resname) + 1, M_TEMP, M_NOWAIT); 1340 if (new[i].name == NULL) { 1341 free(new, M_TEMP); 1342 return -1; 1343 } 1344 strcpy(new[i].name, resname); 1345 new[i].type = type; 1346 if (devtab[j].resources) 1347 free(devtab[j].resources, M_TEMP); 1348 devtab[j].resources = new; 1349 devtab[j].resource_count = i + 1; 1350 return i; 1351 } 1352 1353 static int 1354 resource_match_string(int i, char *resname, char *value) 1355 { 1356 int j; 1357 struct config_resource *res; 1358 1359 for (j = 0, res = devtab[i].resources; 1360 j < devtab[i].resource_count; j++, res++) 1361 if (!strcmp(res->name, resname) 1362 && res->type == RES_STRING 1363 && !strcmp(res->u.stringval, value)) 1364 return j; 1365 return -1; 1366 } 1367 1368 static int 1369 resource_find(const char *name, int unit, char *resname, 1370 struct config_resource **result) 1371 { 1372 int i, j; 1373 struct config_resource *res; 1374 1375 /* 1376 * First check specific instances, then generic. 1377 */ 1378 for (i = 0; i < devtab_count; i++) { 1379 if (devtab[i].unit < 0) 1380 continue; 1381 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1382 res = devtab[i].resources; 1383 for (j = 0; j < devtab[i].resource_count; j++, res++) 1384 if (!strcmp(res->name, resname)) { 1385 *result = res; 1386 return 0; 1387 } 1388 } 1389 } 1390 for (i = 0; i < devtab_count; i++) { 1391 if (devtab[i].unit >= 0) 1392 continue; 1393 /* XXX should this `&& devtab[i].unit == unit' be here? */ 1394 /* XXX if so, then the generic match does nothing */ 1395 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1396 res = devtab[i].resources; 1397 for (j = 0; j < devtab[i].resource_count; j++, res++) 1398 if (!strcmp(res->name, resname)) { 1399 *result = res; 1400 return 0; 1401 } 1402 } 1403 } 1404 return ENOENT; 1405 } 1406 1407 int 1408 resource_int_value(const char *name, int unit, char *resname, int *result) 1409 { 1410 int error; 1411 struct config_resource *res; 1412 1413 if ((error = resource_find(name, unit, resname, &res)) != 0) 1414 return error; 1415 if (res->type != RES_INT) 1416 return EFTYPE; 1417 *result = res->u.intval; 1418 return 0; 1419 } 1420 1421 int 1422 resource_long_value(const char *name, int unit, char *resname, long *result) 1423 { 1424 int error; 1425 struct config_resource *res; 1426 1427 if ((error = resource_find(name, unit, resname, &res)) != 0) 1428 return error; 1429 if (res->type != RES_LONG) 1430 return EFTYPE; 1431 *result = res->u.longval; 1432 return 0; 1433 } 1434 1435 int 1436 resource_string_value(const char *name, int unit, char *resname, char **result) 1437 { 1438 int error; 1439 struct config_resource *res; 1440 1441 if ((error = resource_find(name, unit, resname, &res)) != 0) 1442 return error; 1443 if (res->type != RES_STRING) 1444 return EFTYPE; 1445 *result = res->u.stringval; 1446 return 0; 1447 } 1448 1449 int 1450 resource_query_string(int i, char *resname, char *value) 1451 { 1452 if (i < 0) 1453 i = 0; 1454 else 1455 i = i + 1; 1456 for (; i < devtab_count; i++) 1457 if (resource_match_string(i, resname, value) >= 0) 1458 return i; 1459 return -1; 1460 } 1461 1462 int 1463 resource_locate(int i, char *resname) 1464 { 1465 if (i < 0) 1466 i = 0; 1467 else 1468 i = i + 1; 1469 for (; i < devtab_count; i++) 1470 if (!strcmp(devtab[i].name, resname)) 1471 return i; 1472 return -1; 1473 } 1474 1475 int 1476 resource_count(void) 1477 { 1478 return devtab_count; 1479 } 1480 1481 char * 1482 resource_query_name(int i) 1483 { 1484 return devtab[i].name; 1485 } 1486 1487 int 1488 resource_query_unit(int i) 1489 { 1490 return devtab[i].unit; 1491 } 1492 1493 static int 1494 resource_create(char *name, int unit, char *resname, resource_type type, 1495 struct config_resource **result) 1496 { 1497 int i, j; 1498 struct config_resource *res = NULL; 1499 1500 for (i = 0; i < devtab_count; i++) { 1501 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1502 res = devtab[i].resources; 1503 break; 1504 } 1505 } 1506 if (res == NULL) { 1507 i = resource_new_name(name, unit); 1508 if (i < 0) 1509 return ENOMEM; 1510 res = devtab[i].resources; 1511 } 1512 for (j = 0; j < devtab[i].resource_count; j++, res++) { 1513 if (!strcmp(res->name, resname)) { 1514 *result = res; 1515 return 0; 1516 } 1517 } 1518 j = resource_new_resname(i, resname, type); 1519 if (j < 0) 1520 return ENOMEM; 1521 res = &devtab[i].resources[j]; 1522 *result = res; 1523 return 0; 1524 } 1525 1526 int 1527 resource_set_int(char *name, int unit, char *resname, int value) 1528 { 1529 int error; 1530 struct config_resource *res; 1531 1532 error = resource_create(name, unit, resname, RES_INT, &res); 1533 if (error) 1534 return error; 1535 if (res->type != RES_INT) 1536 return EFTYPE; 1537 res->u.intval = value; 1538 return 0; 1539 } 1540 1541 int 1542 resource_set_long(char *name, int unit, char *resname, long value) 1543 { 1544 int error; 1545 struct config_resource *res; 1546 1547 error = resource_create(name, unit, resname, RES_LONG, &res); 1548 if (error) 1549 return error; 1550 if (res->type != RES_LONG) 1551 return EFTYPE; 1552 res->u.longval = value; 1553 return 0; 1554 } 1555 1556 int 1557 resource_set_string(char *name, int unit, char *resname, char *value) 1558 { 1559 int error; 1560 struct config_resource *res; 1561 1562 error = resource_create(name, unit, resname, RES_STRING, &res); 1563 if (error) 1564 return error; 1565 if (res->type != RES_STRING) 1566 return EFTYPE; 1567 if (res->u.stringval) 1568 free(res->u.stringval, M_TEMP); 1569 res->u.stringval = malloc(strlen(value) + 1, M_TEMP, M_NOWAIT); 1570 if (res->u.stringval == NULL) 1571 return ENOMEM; 1572 strcpy(res->u.stringval, value); 1573 return 0; 1574 } 1575 1576 1577 static void 1578 resource_cfgload(void *dummy __unused) 1579 { 1580 struct config_resource *res, *cfgres; 1581 int i, j; 1582 int error; 1583 char *name, *resname; 1584 int unit; 1585 resource_type type; 1586 char *stringval; 1587 int config_devtab_count; 1588 1589 config_devtab_count = devtab_count; 1590 devtab = NULL; 1591 devtab_count = 0; 1592 1593 for (i = 0; i < config_devtab_count; i++) { 1594 name = config_devtab[i].name; 1595 unit = config_devtab[i].unit; 1596 1597 for (j = 0; j < config_devtab[i].resource_count; j++) { 1598 cfgres = config_devtab[i].resources; 1599 resname = cfgres[j].name; 1600 type = cfgres[j].type; 1601 error = resource_create(name, unit, resname, type, 1602 &res); 1603 if (error) { 1604 printf("create resource %s%d: error %d\n", 1605 name, unit, error); 1606 continue; 1607 } 1608 if (res->type != type) { 1609 printf("type mismatch %s%d: %d != %d\n", 1610 name, unit, res->type, type); 1611 continue; 1612 } 1613 switch (type) { 1614 case RES_INT: 1615 res->u.intval = cfgres[j].u.intval; 1616 break; 1617 case RES_LONG: 1618 res->u.longval = cfgres[j].u.longval; 1619 break; 1620 case RES_STRING: 1621 if (res->u.stringval) 1622 free(res->u.stringval, M_TEMP); 1623 stringval = cfgres[j].u.stringval; 1624 res->u.stringval = malloc(strlen(stringval) + 1, 1625 M_TEMP, M_NOWAIT); 1626 if (res->u.stringval == NULL) 1627 break; 1628 strcpy(res->u.stringval, stringval); 1629 break; 1630 default: 1631 panic("unknown resource type %d\n", type); 1632 } 1633 } 1634 } 1635 } 1636 SYSINIT(cfgload, SI_SUB_KMEM, SI_ORDER_ANY + 50, resource_cfgload, 0) 1637 1638 1639 /*======================================*/ 1640 /* 1641 * Some useful method implementations to make life easier for bus drivers. 1642 */ 1643 1644 void 1645 resource_list_init(struct resource_list *rl) 1646 { 1647 SLIST_INIT(rl); 1648 } 1649 1650 void 1651 resource_list_free(struct resource_list *rl) 1652 { 1653 struct resource_list_entry *rle; 1654 1655 while ((rle = SLIST_FIRST(rl)) != NULL) { 1656 if (rle->res) 1657 panic("resource_list_free: resource entry is busy"); 1658 SLIST_REMOVE_HEAD(rl, link); 1659 free(rle, M_BUS); 1660 } 1661 } 1662 1663 void 1664 resource_list_add(struct resource_list *rl, 1665 int type, int rid, 1666 u_long start, u_long end, u_long count) 1667 { 1668 struct resource_list_entry *rle; 1669 1670 rle = resource_list_find(rl, type, rid); 1671 if (!rle) { 1672 rle = malloc(sizeof(struct resource_list_entry), M_BUS, M_NOWAIT); 1673 if (!rle) 1674 panic("resource_list_add: can't record entry"); 1675 SLIST_INSERT_HEAD(rl, rle, link); 1676 rle->type = type; 1677 rle->rid = rid; 1678 rle->res = NULL; 1679 } 1680 1681 if (rle->res) 1682 panic("resource_list_add: resource entry is busy"); 1683 1684 rle->start = start; 1685 rle->end = end; 1686 rle->count = count; 1687 } 1688 1689 struct resource_list_entry* 1690 resource_list_find(struct resource_list *rl, 1691 int type, int rid) 1692 { 1693 struct resource_list_entry *rle; 1694 1695 SLIST_FOREACH(rle, rl, link) 1696 if (rle->type == type && rle->rid == rid) 1697 return rle; 1698 return NULL; 1699 } 1700 1701 void 1702 resource_list_delete(struct resource_list *rl, 1703 int type, int rid) 1704 { 1705 struct resource_list_entry *rle = resource_list_find(rl, type, rid); 1706 1707 if (rle) { 1708 SLIST_REMOVE(rl, rle, resource_list_entry, link); 1709 free(rle, M_BUS); 1710 } 1711 } 1712 1713 struct resource * 1714 resource_list_alloc(struct resource_list *rl, 1715 device_t bus, device_t child, 1716 int type, int *rid, 1717 u_long start, u_long end, 1718 u_long count, u_int flags) 1719 { 1720 struct resource_list_entry *rle = 0; 1721 int passthrough = (device_get_parent(child) != bus); 1722 int isdefault = (start == 0UL && end == ~0UL); 1723 1724 if (passthrough) { 1725 return BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1726 type, rid, 1727 start, end, count, flags); 1728 } 1729 1730 rle = resource_list_find(rl, type, *rid); 1731 1732 if (!rle) 1733 return 0; /* no resource of that type/rid */ 1734 if (rle->res) 1735 panic("resource_list_alloc: resource entry is busy"); 1736 1737 if (isdefault) { 1738 start = rle->start; 1739 count = max(count, rle->count); 1740 end = max(rle->end, start + count - 1); 1741 } 1742 1743 rle->res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1744 type, rid, start, end, count, flags); 1745 1746 /* 1747 * Record the new range. 1748 */ 1749 if (rle->res) { 1750 rle->start = rman_get_start(rle->res); 1751 rle->end = rman_get_end(rle->res); 1752 rle->count = count; 1753 } 1754 1755 return rle->res; 1756 } 1757 1758 int 1759 resource_list_release(struct resource_list *rl, 1760 device_t bus, device_t child, 1761 int type, int rid, struct resource *res) 1762 { 1763 struct resource_list_entry *rle = 0; 1764 int passthrough = (device_get_parent(child) != bus); 1765 int error; 1766 1767 if (passthrough) { 1768 return BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1769 type, rid, res); 1770 } 1771 1772 rle = resource_list_find(rl, type, rid); 1773 1774 if (!rle) 1775 panic("resource_list_release: can't find resource"); 1776 if (!rle->res) 1777 panic("resource_list_release: resource entry is not busy"); 1778 1779 error = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1780 type, rid, res); 1781 if (error) 1782 return error; 1783 1784 rle->res = NULL; 1785 return 0; 1786 } 1787 1788 /* 1789 * Call DEVICE_IDENTIFY for each driver. 1790 */ 1791 int 1792 bus_generic_probe(device_t dev) 1793 { 1794 devclass_t dc = dev->devclass; 1795 driverlink_t dl; 1796 1797 for (dl = TAILQ_FIRST(&dc->drivers); dl; dl = TAILQ_NEXT(dl, link)) 1798 DEVICE_IDENTIFY(dl->driver, dev); 1799 1800 return 0; 1801 } 1802 1803 int 1804 bus_generic_attach(device_t dev) 1805 { 1806 device_t child; 1807 1808 for (child = TAILQ_FIRST(&dev->children); 1809 child; child = TAILQ_NEXT(child, link)) 1810 device_probe_and_attach(child); 1811 1812 return 0; 1813 } 1814 1815 int 1816 bus_generic_detach(device_t dev) 1817 { 1818 device_t child; 1819 int error; 1820 1821 if (dev->state != DS_ATTACHED) 1822 return EBUSY; 1823 1824 for (child = TAILQ_FIRST(&dev->children); 1825 child; child = TAILQ_NEXT(child, link)) 1826 if ((error = device_detach(child)) != 0) 1827 return error; 1828 1829 return 0; 1830 } 1831 1832 int 1833 bus_generic_shutdown(device_t dev) 1834 { 1835 device_t child; 1836 1837 for (child = TAILQ_FIRST(&dev->children); 1838 child; child = TAILQ_NEXT(child, link)) 1839 device_shutdown(child); 1840 1841 return 0; 1842 } 1843 1844 int 1845 bus_generic_suspend(device_t dev) 1846 { 1847 int error; 1848 device_t child, child2; 1849 1850 for (child = TAILQ_FIRST(&dev->children); 1851 child; child = TAILQ_NEXT(child, link)) { 1852 error = DEVICE_SUSPEND(child); 1853 if (error) { 1854 for (child2 = TAILQ_FIRST(&dev->children); 1855 child2 && child2 != child; 1856 child2 = TAILQ_NEXT(child2, link)) 1857 DEVICE_RESUME(child2); 1858 return (error); 1859 } 1860 } 1861 return 0; 1862 } 1863 1864 int 1865 bus_generic_resume(device_t dev) 1866 { 1867 device_t child; 1868 1869 for (child = TAILQ_FIRST(&dev->children); 1870 child; child = TAILQ_NEXT(child, link)) { 1871 DEVICE_RESUME(child); 1872 /* if resume fails, there's nothing we can usefully do... */ 1873 } 1874 return 0; 1875 } 1876 1877 int 1878 bus_print_child_header (device_t dev, device_t child) 1879 { 1880 int retval = 0; 1881 1882 if (device_get_desc(child)) { 1883 retval += device_printf(child, "<%s>", 1884 device_get_desc(child)); 1885 } else { 1886 retval += printf("%s", device_get_nameunit(child)); 1887 } 1888 1889 return (retval); 1890 } 1891 1892 int 1893 bus_print_child_footer (device_t dev, device_t child) 1894 { 1895 return(printf(" on %s\n", device_get_nameunit(dev))); 1896 } 1897 1898 int 1899 bus_generic_print_child(device_t dev, device_t child) 1900 { 1901 int retval = 0; 1902 1903 retval += bus_print_child_header(dev, child); 1904 retval += bus_print_child_footer(dev, child); 1905 1906 return (retval); 1907 } 1908 1909 int 1910 bus_generic_read_ivar(device_t dev, device_t child, int index, 1911 uintptr_t * result) 1912 { 1913 return ENOENT; 1914 } 1915 1916 int 1917 bus_generic_write_ivar(device_t dev, device_t child, int index, 1918 uintptr_t value) 1919 { 1920 return ENOENT; 1921 } 1922 1923 void 1924 bus_generic_driver_added(device_t dev, driver_t *driver) 1925 { 1926 device_t child; 1927 1928 DEVICE_IDENTIFY(driver, dev); 1929 for (child = TAILQ_FIRST(&dev->children); 1930 child; child = TAILQ_NEXT(child, link)) 1931 if (child->state == DS_NOTPRESENT) 1932 device_probe_and_attach(child); 1933 } 1934 1935 int 1936 bus_generic_setup_intr(device_t dev, device_t child, struct resource *irq, 1937 int flags, driver_intr_t *intr, void *arg, 1938 void **cookiep) 1939 { 1940 /* Propagate up the bus hierarchy until someone handles it. */ 1941 if (dev->parent) 1942 return (BUS_SETUP_INTR(dev->parent, child, irq, flags, 1943 intr, arg, cookiep)); 1944 else 1945 return (EINVAL); 1946 } 1947 1948 int 1949 bus_generic_teardown_intr(device_t dev, device_t child, struct resource *irq, 1950 void *cookie) 1951 { 1952 /* Propagate up the bus hierarchy until someone handles it. */ 1953 if (dev->parent) 1954 return (BUS_TEARDOWN_INTR(dev->parent, child, irq, cookie)); 1955 else 1956 return (EINVAL); 1957 } 1958 1959 struct resource * 1960 bus_generic_alloc_resource(device_t dev, device_t child, int type, int *rid, 1961 u_long start, u_long end, u_long count, u_int flags) 1962 { 1963 /* Propagate up the bus hierarchy until someone handles it. */ 1964 if (dev->parent) 1965 return (BUS_ALLOC_RESOURCE(dev->parent, child, type, rid, 1966 start, end, count, flags)); 1967 else 1968 return (NULL); 1969 } 1970 1971 int 1972 bus_generic_release_resource(device_t dev, device_t child, int type, int rid, 1973 struct resource *r) 1974 { 1975 /* Propagate up the bus hierarchy until someone handles it. */ 1976 if (dev->parent) 1977 return (BUS_RELEASE_RESOURCE(dev->parent, child, type, rid, 1978 r)); 1979 else 1980 return (EINVAL); 1981 } 1982 1983 int 1984 bus_generic_activate_resource(device_t dev, device_t child, int type, int rid, 1985 struct resource *r) 1986 { 1987 /* Propagate up the bus hierarchy until someone handles it. */ 1988 if (dev->parent) 1989 return (BUS_ACTIVATE_RESOURCE(dev->parent, child, type, rid, 1990 r)); 1991 else 1992 return (EINVAL); 1993 } 1994 1995 int 1996 bus_generic_deactivate_resource(device_t dev, device_t child, int type, 1997 int rid, struct resource *r) 1998 { 1999 /* Propagate up the bus hierarchy until someone handles it. */ 2000 if (dev->parent) 2001 return (BUS_DEACTIVATE_RESOURCE(dev->parent, child, type, rid, 2002 r)); 2003 else 2004 return (EINVAL); 2005 } 2006 2007 /* 2008 * Some convenience functions to make it easier for drivers to use the 2009 * resource-management functions. All these really do is hide the 2010 * indirection through the parent's method table, making for slightly 2011 * less-wordy code. In the future, it might make sense for this code 2012 * to maintain some sort of a list of resources allocated by each device. 2013 */ 2014 struct resource * 2015 bus_alloc_resource(device_t dev, int type, int *rid, u_long start, u_long end, 2016 u_long count, u_int flags) 2017 { 2018 if (dev->parent == 0) 2019 return (0); 2020 return (BUS_ALLOC_RESOURCE(dev->parent, dev, type, rid, start, end, 2021 count, flags)); 2022 } 2023 2024 int 2025 bus_activate_resource(device_t dev, int type, int rid, struct resource *r) 2026 { 2027 if (dev->parent == 0) 2028 return (EINVAL); 2029 return (BUS_ACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 2030 } 2031 2032 int 2033 bus_deactivate_resource(device_t dev, int type, int rid, struct resource *r) 2034 { 2035 if (dev->parent == 0) 2036 return (EINVAL); 2037 return (BUS_DEACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 2038 } 2039 2040 int 2041 bus_release_resource(device_t dev, int type, int rid, struct resource *r) 2042 { 2043 if (dev->parent == 0) 2044 return (EINVAL); 2045 return (BUS_RELEASE_RESOURCE(dev->parent, dev, 2046 type, rid, r)); 2047 } 2048 2049 int 2050 bus_setup_intr(device_t dev, struct resource *r, int flags, 2051 driver_intr_t handler, void *arg, void **cookiep) 2052 { 2053 if (dev->parent == 0) 2054 return (EINVAL); 2055 return (BUS_SETUP_INTR(dev->parent, dev, r, flags, 2056 handler, arg, cookiep)); 2057 } 2058 2059 int 2060 bus_teardown_intr(device_t dev, struct resource *r, void *cookie) 2061 { 2062 if (dev->parent == 0) 2063 return (EINVAL); 2064 return (BUS_TEARDOWN_INTR(dev->parent, dev, r, cookie)); 2065 } 2066 2067 int 2068 bus_set_resource(device_t dev, int type, int rid, 2069 u_long start, u_long count) 2070 { 2071 return BUS_SET_RESOURCE(device_get_parent(dev), dev, type, rid, 2072 start, count); 2073 } 2074 2075 int 2076 bus_get_resource(device_t dev, int type, int rid, 2077 u_long *startp, u_long *countp) 2078 { 2079 return BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2080 startp, countp); 2081 } 2082 2083 u_long 2084 bus_get_resource_start(device_t dev, int type, int rid) 2085 { 2086 u_long start, count; 2087 int error; 2088 2089 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2090 &start, &count); 2091 if (error) 2092 return 0; 2093 return start; 2094 } 2095 2096 u_long 2097 bus_get_resource_count(device_t dev, int type, int rid) 2098 { 2099 u_long start, count; 2100 int error; 2101 2102 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2103 &start, &count); 2104 if (error) 2105 return 0; 2106 return count; 2107 } 2108 2109 void 2110 bus_delete_resource(device_t dev, int type, int rid) 2111 { 2112 BUS_DELETE_RESOURCE(device_get_parent(dev), dev, type, rid); 2113 } 2114 2115 static int 2116 root_print_child(device_t dev, device_t child) 2117 { 2118 return (0); 2119 } 2120 2121 static int 2122 root_setup_intr(device_t dev, device_t child, driver_intr_t *intr, void *arg, 2123 void **cookiep) 2124 { 2125 /* 2126 * If an interrupt mapping gets to here something bad has happened. 2127 */ 2128 panic("root_setup_intr"); 2129 } 2130 2131 static device_method_t root_methods[] = { 2132 /* Device interface */ 2133 DEVMETHOD(device_shutdown, bus_generic_shutdown), 2134 DEVMETHOD(device_suspend, bus_generic_suspend), 2135 DEVMETHOD(device_resume, bus_generic_resume), 2136 2137 /* Bus interface */ 2138 DEVMETHOD(bus_print_child, root_print_child), 2139 DEVMETHOD(bus_read_ivar, bus_generic_read_ivar), 2140 DEVMETHOD(bus_write_ivar, bus_generic_write_ivar), 2141 DEVMETHOD(bus_setup_intr, root_setup_intr), 2142 2143 { 0, 0 } 2144 }; 2145 2146 static driver_t root_driver = { 2147 "root", 2148 root_methods, 2149 1, /* no softc */ 2150 }; 2151 2152 device_t root_bus; 2153 devclass_t root_devclass; 2154 2155 static int 2156 root_bus_module_handler(module_t mod, int what, void* arg) 2157 { 2158 switch (what) { 2159 case MOD_LOAD: 2160 compile_methods(&root_driver); 2161 root_bus = make_device(NULL, "root", 0, NULL); 2162 root_bus->desc = "System root bus"; 2163 root_bus->ops = root_driver.ops; 2164 root_bus->driver = &root_driver; 2165 root_bus->state = DS_ATTACHED; 2166 root_devclass = devclass_find_internal("root", FALSE); 2167 return 0; 2168 2169 case MOD_SHUTDOWN: 2170 device_shutdown(root_bus); 2171 return 0; 2172 } 2173 2174 return 0; 2175 } 2176 2177 static moduledata_t root_bus_mod = { 2178 "rootbus", 2179 root_bus_module_handler, 2180 0 2181 }; 2182 DECLARE_MODULE(rootbus, root_bus_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 2183 2184 void 2185 root_bus_configure(void) 2186 { 2187 device_t dev; 2188 2189 PDEBUG((".")); 2190 2191 for (dev = TAILQ_FIRST(&root_bus->children); dev; 2192 dev = TAILQ_NEXT(dev, link)) { 2193 device_probe_and_attach(dev); 2194 } 2195 } 2196 2197 int 2198 driver_module_handler(module_t mod, int what, void *arg) 2199 { 2200 int error, i; 2201 struct driver_module_data *dmd; 2202 devclass_t bus_devclass; 2203 2204 dmd = (struct driver_module_data *)arg; 2205 bus_devclass = devclass_find_internal(dmd->dmd_busname, TRUE); 2206 error = 0; 2207 2208 switch (what) { 2209 case MOD_LOAD: 2210 if (dmd->dmd_chainevh) 2211 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2212 2213 for (i = 0; !error && i < dmd->dmd_ndrivers; i++) { 2214 PDEBUG(("Loading module: driver %s on bus %s", 2215 DRIVERNAME(dmd->dmd_drivers[i]), 2216 dmd->dmd_busname)); 2217 error = devclass_add_driver(bus_devclass, 2218 dmd->dmd_drivers[i]); 2219 } 2220 if (error) 2221 break; 2222 2223 /* 2224 * The drivers loaded in this way are assumed to all 2225 * implement the same devclass. 2226 */ 2227 *dmd->dmd_devclass = 2228 devclass_find_internal(dmd->dmd_drivers[0]->name, 2229 TRUE); 2230 break; 2231 2232 case MOD_UNLOAD: 2233 for (i = 0; !error && i < dmd->dmd_ndrivers; i++) { 2234 PDEBUG(("Unloading module: driver %s from bus %s", 2235 DRIVERNAME(dmd->dmd_drivers[i]), 2236 dmd->dmd_busname)); 2237 error = devclass_delete_driver(bus_devclass, 2238 dmd->dmd_drivers[i]); 2239 } 2240 2241 if (!error && dmd->dmd_chainevh) 2242 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2243 break; 2244 } 2245 2246 return (error); 2247 } 2248 2249 #ifdef BUS_DEBUG 2250 2251 /* the _short versions avoid iteration by not calling anything that prints 2252 * more than oneliners. I love oneliners. 2253 */ 2254 2255 static void 2256 print_method_list(device_method_t *m, int indent) 2257 { 2258 int i; 2259 2260 if (!m) 2261 return; 2262 2263 for (i = 0; m->desc; i++, m++) 2264 indentprintf(("method %d: %s, offset=%d\n", 2265 i, m->desc->name, m->desc->offset)); 2266 } 2267 2268 static void 2269 print_device_ops(device_ops_t ops, int indent) 2270 { 2271 int i; 2272 int count = 0; 2273 2274 if (!ops) 2275 return; 2276 2277 /* we present a list of the methods that are pointing to the 2278 * error_method, but ignore the 0'th elements; it is always 2279 * error_method. 2280 */ 2281 for (i = 1; i < ops->maxoffset; i++) { 2282 if (ops->methods[i] == error_method) { 2283 if (count == 0) 2284 indentprintf(("error_method:")); 2285 printf(" %d", i); 2286 count++; 2287 } 2288 } 2289 if (count) 2290 printf("\n"); 2291 2292 indentprintf(("(%d method%s, %d valid, %d error_method%s)\n", 2293 ops->maxoffset-1, (ops->maxoffset-1 == 1? "":"s"), 2294 ops->maxoffset-1-count, 2295 count, (count == 1? "":"'s"))); 2296 } 2297 2298 static void 2299 print_device_short(device_t dev, int indent) 2300 { 2301 if (!dev) 2302 return; 2303 2304 indentprintf(("device %d: <%s> %sparent,%schildren,%s%s%s%s,%sivars,%ssoftc,busy=%d\n", 2305 dev->unit, dev->desc, 2306 (dev->parent? "":"no "), 2307 (TAILQ_EMPTY(&dev->children)? "no ":""), 2308 (dev->flags&DF_ENABLED? "enabled,":"disabled,"), 2309 (dev->flags&DF_FIXEDCLASS? "fixed,":""), 2310 (dev->flags&DF_WILDCARD? "wildcard,":""), 2311 (dev->flags&DF_DESCMALLOCED? "descmalloced,":""), 2312 (dev->ivars? "":"no "), 2313 (dev->softc? "":"no "), 2314 dev->busy)); 2315 } 2316 2317 static void 2318 print_device(device_t dev, int indent) 2319 { 2320 if (!dev) 2321 return; 2322 2323 print_device_short(dev, indent); 2324 2325 indentprintf(("Parent:\n")); 2326 print_device_short(dev->parent, indent+1); 2327 indentprintf(("Methods:\n")); 2328 print_device_ops(dev->ops, indent+1); 2329 indentprintf(("Driver:\n")); 2330 print_driver_short(dev->driver, indent+1); 2331 indentprintf(("Devclass:\n")); 2332 print_devclass_short(dev->devclass, indent+1); 2333 } 2334 2335 void 2336 print_device_tree_short(device_t dev, int indent) 2337 /* print the device and all its children (indented) */ 2338 { 2339 device_t child; 2340 2341 if (!dev) 2342 return; 2343 2344 print_device_short(dev, indent); 2345 2346 for (child = TAILQ_FIRST(&dev->children); child; 2347 child = TAILQ_NEXT(child, link)) 2348 print_device_tree_short(child, indent+1); 2349 } 2350 2351 void 2352 print_device_tree(device_t dev, int indent) 2353 /* print the device and all its children (indented) */ 2354 { 2355 device_t child; 2356 2357 if (!dev) 2358 return; 2359 2360 print_device(dev, indent); 2361 2362 for (child = TAILQ_FIRST(&dev->children); child; 2363 child = TAILQ_NEXT(child, link)) 2364 print_device_tree(child, indent+1); 2365 } 2366 2367 static void 2368 print_driver_short(driver_t *driver, int indent) 2369 { 2370 if (!driver) 2371 return; 2372 2373 indentprintf(("driver %s: softc size = %d\n", 2374 driver->name, driver->softc)); 2375 } 2376 2377 static void 2378 print_driver(driver_t *driver, int indent) 2379 { 2380 if (!driver) 2381 return; 2382 2383 print_driver_short(driver, indent); 2384 indentprintf(("Methods:\n")); 2385 print_method_list(driver->methods, indent+1); 2386 indentprintf(("Operations:\n")); 2387 print_device_ops(driver->ops, indent+1); 2388 } 2389 2390 2391 static void 2392 print_driver_list(driver_list_t drivers, int indent) 2393 { 2394 driverlink_t driver; 2395 2396 for (driver = TAILQ_FIRST(&drivers); driver; 2397 driver = TAILQ_NEXT(driver, link)) 2398 print_driver(driver->driver, indent); 2399 } 2400 2401 static void 2402 print_devclass_short(devclass_t dc, int indent) 2403 { 2404 if ( !dc ) 2405 return; 2406 2407 indentprintf(("devclass %s: max units = %d, next unit = %d\n", 2408 dc->name, dc->maxunit, dc->nextunit)); 2409 } 2410 2411 static void 2412 print_devclass(devclass_t dc, int indent) 2413 { 2414 int i; 2415 2416 if ( !dc ) 2417 return; 2418 2419 print_devclass_short(dc, indent); 2420 indentprintf(("Drivers:\n")); 2421 print_driver_list(dc->drivers, indent+1); 2422 2423 indentprintf(("Devices:\n")); 2424 for (i = 0; i < dc->maxunit; i++) 2425 if (dc->devices[i]) 2426 print_device(dc->devices[i], indent+1); 2427 } 2428 2429 void 2430 print_devclass_list_short(void) 2431 { 2432 devclass_t dc; 2433 2434 printf("Short listing of devclasses, drivers & devices:\n"); 2435 for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) 2436 print_devclass_short(dc, 0); 2437 } 2438 2439 void 2440 print_devclass_list(void) 2441 { 2442 devclass_t dc; 2443 2444 printf("Full listing of devclasses, drivers & devices:\n"); 2445 for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) 2446 print_devclass(dc, 0); 2447 } 2448 2449 #endif 2450