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 dev = devclass_get_device(dc, unit); 436 if (!dev) 437 return (NULL); 438 439 return (device_get_softc(dev)); 440 } 441 442 int 443 devclass_get_devices(devclass_t dc, device_t **devlistp, int *devcountp) 444 { 445 int i; 446 int count; 447 device_t *list; 448 449 count = 0; 450 for (i = 0; i < dc->maxunit; i++) 451 if (dc->devices[i]) 452 count++; 453 454 list = malloc(count * sizeof(device_t), M_TEMP, M_NOWAIT); 455 if (!list) 456 return ENOMEM; 457 bzero(list, count * sizeof(device_t)); 458 459 count = 0; 460 for (i = 0; i < dc->maxunit; i++) 461 if (dc->devices[i]) { 462 list[count] = dc->devices[i]; 463 count++; 464 } 465 466 *devlistp = list; 467 *devcountp = count; 468 469 return 0; 470 } 471 472 int 473 devclass_get_maxunit(devclass_t dc) 474 { 475 return dc->maxunit; 476 } 477 478 static int 479 devclass_alloc_unit(devclass_t dc, int *unitp) 480 { 481 int unit = *unitp; 482 483 PDEBUG(("unit %d in devclass %s", unit, DEVCLANAME(dc))); 484 485 /* 486 * If we have been given a wired unit number, check for existing 487 * device. 488 */ 489 if (unit != -1) { 490 device_t dev; 491 dev = devclass_get_device(dc, unit); 492 if (dev) { 493 printf("devclass_alloc_unit: %s%d already exists, using next available unit number\n", dc->name, unit); 494 unit = -1; 495 } 496 } 497 498 if (unit == -1) { 499 unit = dc->nextunit; 500 dc->nextunit++; 501 } else if (dc->nextunit <= unit) 502 dc->nextunit = unit + 1; 503 504 if (unit >= dc->maxunit) { 505 device_t *newlist; 506 int newsize; 507 508 newsize = (dc->maxunit ? 2 * dc->maxunit 509 : MINALLOCSIZE / sizeof(device_t)); 510 newlist = malloc(sizeof(device_t) * newsize, M_BUS, M_NOWAIT); 511 if (!newlist) 512 return ENOMEM; 513 bcopy(dc->devices, newlist, sizeof(device_t) * dc->maxunit); 514 bzero(newlist + dc->maxunit, 515 sizeof(device_t) * (newsize - dc->maxunit)); 516 if (dc->devices) 517 free(dc->devices, M_BUS); 518 dc->devices = newlist; 519 dc->maxunit = newsize; 520 } 521 PDEBUG(("now: unit %d in devclass %s", unit, DEVCLANAME(dc))); 522 523 *unitp = unit; 524 return 0; 525 } 526 527 static int 528 devclass_add_device(devclass_t dc, device_t dev) 529 { 530 int buflen, error; 531 532 PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); 533 534 buflen = strlen(dc->name) + 5; 535 dev->nameunit = malloc(buflen, M_BUS, M_NOWAIT); 536 if (!dev->nameunit) 537 return ENOMEM; 538 bzero(dev->nameunit, buflen); 539 540 if ((error = devclass_alloc_unit(dc, &dev->unit)) != 0) { 541 free(dev->nameunit, M_BUS); 542 dev->nameunit = NULL; 543 return error; 544 } 545 dc->devices[dev->unit] = dev; 546 dev->devclass = dc; 547 snprintf(dev->nameunit, buflen, "%s%d", dc->name, dev->unit); 548 549 #ifdef DEVICE_SYSCTLS 550 device_register_oids(dev); 551 #endif 552 553 return 0; 554 } 555 556 static int 557 devclass_delete_device(devclass_t dc, device_t dev) 558 { 559 if (!dc || !dev) 560 return 0; 561 562 PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); 563 564 if (dev->devclass != dc 565 || dc->devices[dev->unit] != dev) 566 panic("devclass_delete_device: inconsistent device class"); 567 dc->devices[dev->unit] = NULL; 568 if (dev->flags & DF_WILDCARD) 569 dev->unit = -1; 570 dev->devclass = NULL; 571 free(dev->nameunit, M_BUS); 572 dev->nameunit = NULL; 573 while (dc->nextunit > 0 && dc->devices[dc->nextunit - 1] == NULL) 574 dc->nextunit--; 575 576 #ifdef DEVICE_SYSCTLS 577 device_unregister_oids(dev); 578 #endif 579 580 return 0; 581 } 582 583 static device_t 584 make_device(device_t parent, const char *name, int unit) 585 { 586 device_t dev; 587 devclass_t dc; 588 589 PDEBUG(("%s at %s as unit %d", name, DEVICENAME(parent), unit)); 590 591 if (name) { 592 dc = devclass_find_internal(name, TRUE); 593 if (!dc) { 594 printf("make_device: can't find device class %s\n", name); 595 return NULL; 596 } 597 } else 598 dc = NULL; 599 600 dev = malloc(sizeof(struct device), M_BUS, M_NOWAIT); 601 if (!dev) 602 return 0; 603 bzero(dev, sizeof(struct device)); 604 605 dev->parent = parent; 606 TAILQ_INIT(&dev->children); 607 dev->ops = &null_ops; 608 dev->driver = NULL; 609 dev->devclass = NULL; 610 dev->unit = unit; 611 dev->nameunit = NULL; 612 dev->desc = NULL; 613 dev->busy = 0; 614 dev->devflags = 0; 615 dev->flags = DF_ENABLED; 616 dev->order = 0; 617 if (unit == -1) 618 dev->flags |= DF_WILDCARD; 619 if (name) { 620 dev->flags |= DF_FIXEDCLASS; 621 devclass_add_device(dc, dev); 622 } 623 dev->ivars = NULL; 624 dev->softc = NULL; 625 626 dev->state = DS_NOTPRESENT; 627 628 return dev; 629 } 630 631 static int 632 device_print_child(device_t dev, device_t child) 633 { 634 int retval = 0; 635 636 if (device_is_alive(child)) { 637 retval += BUS_PRINT_CHILD(dev, child); 638 } else 639 retval += device_printf(child, " not found\n"); 640 641 return (retval); 642 } 643 644 device_t 645 device_add_child(device_t dev, const char *name, int unit) 646 { 647 return device_add_child_ordered(dev, 0, name, unit); 648 } 649 650 device_t 651 device_add_child_ordered(device_t dev, int order, const char *name, int unit) 652 { 653 device_t child; 654 device_t place; 655 656 PDEBUG(("%s at %s with order %d as unit %d", 657 name, DEVICENAME(dev), order, unit)); 658 659 child = make_device(dev, name, unit); 660 if (child == NULL) 661 return child; 662 child->order = order; 663 664 TAILQ_FOREACH(place, &dev->children, link) 665 if (place->order > order) 666 break; 667 668 if (place) { 669 /* 670 * The device 'place' is the first device whose order is 671 * greater than the new child. 672 */ 673 TAILQ_INSERT_BEFORE(place, child, link); 674 } else { 675 /* 676 * The new child's order is greater or equal to the order of 677 * any existing device. Add the child to the tail of the list. 678 */ 679 TAILQ_INSERT_TAIL(&dev->children, child, link); 680 } 681 682 return child; 683 } 684 685 int 686 device_delete_child(device_t dev, device_t child) 687 { 688 int error; 689 device_t grandchild; 690 691 PDEBUG(("%s from %s", DEVICENAME(child), DEVICENAME(dev))); 692 693 /* remove children first */ 694 while ( (grandchild = TAILQ_FIRST(&child->children)) ) { 695 error = device_delete_child(child, grandchild); 696 if (error) 697 return error; 698 } 699 700 if ((error = device_detach(child)) != 0) 701 return error; 702 if (child->devclass) 703 devclass_delete_device(child->devclass, child); 704 TAILQ_REMOVE(&dev->children, child, link); 705 device_set_desc(child, NULL); 706 free(child, M_BUS); 707 708 return 0; 709 } 710 711 /* 712 * Find only devices attached to this bus. 713 */ 714 device_t 715 device_find_child(device_t dev, const char *classname, int unit) 716 { 717 devclass_t dc; 718 device_t child; 719 720 dc = devclass_find(classname); 721 if (!dc) 722 return NULL; 723 724 child = devclass_get_device(dc, unit); 725 if (child && child->parent == dev) 726 return child; 727 return NULL; 728 } 729 730 static driverlink_t 731 first_matching_driver(devclass_t dc, device_t dev) 732 { 733 if (dev->devclass) 734 return devclass_find_driver_internal(dc, dev->devclass->name); 735 else 736 return TAILQ_FIRST(&dc->drivers); 737 } 738 739 static driverlink_t 740 next_matching_driver(devclass_t dc, device_t dev, driverlink_t last) 741 { 742 if (dev->devclass) { 743 driverlink_t dl; 744 for (dl = TAILQ_NEXT(last, link); dl; dl = TAILQ_NEXT(dl, link)) 745 if (!strcmp(dev->devclass->name, dl->driver->name)) 746 return dl; 747 return NULL; 748 } else 749 return TAILQ_NEXT(last, link); 750 } 751 752 static int 753 device_probe_child(device_t dev, device_t child) 754 { 755 devclass_t dc; 756 driverlink_t best = 0; 757 driverlink_t dl; 758 int result, pri = 0; 759 760 dc = dev->devclass; 761 if (dc == NULL) 762 panic("device_probe_child: parent device has no devclass"); 763 764 if (child->state == DS_ALIVE) 765 return 0; 766 767 for (dl = first_matching_driver(dc, child); 768 dl; 769 dl = next_matching_driver(dc, child, dl)) { 770 PDEBUG(("Trying %s", DRIVERNAME(dl->driver))); 771 device_set_driver(child, dl->driver); 772 result = DEVICE_PROBE(child); 773 774 /* 775 * If the driver returns SUCCESS, there can be no higher match 776 * for this device. 777 */ 778 if (result == 0) { 779 best = dl; 780 pri = 0; 781 break; 782 } 783 784 /* 785 * The driver returned an error so it certainly doesn't match. 786 */ 787 if (result > 0) 788 continue; 789 790 /* 791 * A priority lower than SUCCESS, remember the best matching 792 * driver. Initialise the value of pri for the first match. 793 */ 794 if (best == 0 || result > pri) { 795 best = dl; 796 pri = result; 797 continue; 798 } 799 } 800 801 /* 802 * If we found a driver, change state and initialise the devclass. 803 */ 804 if (best) { 805 if (!child->devclass) 806 device_set_devclass(child, best->driver->name); 807 device_set_driver(child, best->driver); 808 if (pri < 0) { 809 /* 810 * A bit bogus. Call the probe method again to make sure 811 * that we have the right description. 812 */ 813 DEVICE_PROBE(child); 814 } 815 child->state = DS_ALIVE; 816 return 0; 817 } 818 819 return ENXIO; 820 } 821 822 device_t 823 device_get_parent(device_t dev) 824 { 825 return dev->parent; 826 } 827 828 int 829 device_get_children(device_t dev, device_t **devlistp, int *devcountp) 830 { 831 int count; 832 device_t child; 833 device_t *list; 834 835 count = 0; 836 for (child = TAILQ_FIRST(&dev->children); child; 837 child = TAILQ_NEXT(child, link)) 838 count++; 839 840 list = malloc(count * sizeof(device_t), M_TEMP, M_NOWAIT); 841 if (!list) 842 return ENOMEM; 843 bzero(list, count * sizeof(device_t)); 844 845 count = 0; 846 for (child = TAILQ_FIRST(&dev->children); child; 847 child = TAILQ_NEXT(child, link)) { 848 list[count] = child; 849 count++; 850 } 851 852 *devlistp = list; 853 *devcountp = count; 854 855 return 0; 856 } 857 858 driver_t * 859 device_get_driver(device_t dev) 860 { 861 return dev->driver; 862 } 863 864 devclass_t 865 device_get_devclass(device_t dev) 866 { 867 return dev->devclass; 868 } 869 870 const char * 871 device_get_name(device_t dev) 872 { 873 if (dev->devclass) 874 return devclass_get_name(dev->devclass); 875 return NULL; 876 } 877 878 const char * 879 device_get_nameunit(device_t dev) 880 { 881 return dev->nameunit; 882 } 883 884 int 885 device_get_unit(device_t dev) 886 { 887 return dev->unit; 888 } 889 890 const char * 891 device_get_desc(device_t dev) 892 { 893 return dev->desc; 894 } 895 896 u_int32_t 897 device_get_flags(device_t dev) 898 { 899 return dev->devflags; 900 } 901 902 int 903 device_print_prettyname(device_t dev) 904 { 905 const char *name = device_get_name(dev); 906 907 if (name == 0) 908 return printf("unknown: "); 909 else 910 return printf("%s%d: ", name, device_get_unit(dev)); 911 } 912 913 int 914 device_printf(device_t dev, const char * fmt, ...) 915 { 916 va_list ap; 917 int retval; 918 919 retval = device_print_prettyname(dev); 920 va_start(ap, fmt); 921 retval += vprintf(fmt, ap); 922 va_end(ap); 923 return retval; 924 } 925 926 static void 927 device_set_desc_internal(device_t dev, const char* desc, int copy) 928 { 929 if (dev->desc && (dev->flags & DF_DESCMALLOCED)) { 930 free(dev->desc, M_BUS); 931 dev->flags &= ~DF_DESCMALLOCED; 932 dev->desc = NULL; 933 } 934 935 if (copy && desc) { 936 dev->desc = malloc(strlen(desc) + 1, M_BUS, M_NOWAIT); 937 if (dev->desc) { 938 strcpy(dev->desc, desc); 939 dev->flags |= DF_DESCMALLOCED; 940 } 941 } else 942 /* Avoid a -Wcast-qual warning */ 943 dev->desc = (char *)(uintptr_t) desc; 944 945 #ifdef DEVICE_SYSCTLS 946 { 947 struct sysctl_oid *oid = &dev->oid[1]; 948 oid->oid_arg1 = dev->desc ? dev->desc : ""; 949 oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0; 950 } 951 #endif 952 } 953 954 void 955 device_set_desc(device_t dev, const char* desc) 956 { 957 device_set_desc_internal(dev, desc, FALSE); 958 } 959 960 void 961 device_set_desc_copy(device_t dev, const char* desc) 962 { 963 device_set_desc_internal(dev, desc, TRUE); 964 } 965 966 void 967 device_set_flags(device_t dev, u_int32_t flags) 968 { 969 dev->devflags = flags; 970 } 971 972 void * 973 device_get_softc(device_t dev) 974 { 975 return dev->softc; 976 } 977 978 void * 979 device_get_ivars(device_t dev) 980 { 981 return dev->ivars; 982 } 983 984 void 985 device_set_ivars(device_t dev, void * ivars) 986 { 987 if (!dev) 988 return; 989 990 dev->ivars = ivars; 991 992 return; 993 } 994 995 device_state_t 996 device_get_state(device_t dev) 997 { 998 return dev->state; 999 } 1000 1001 void 1002 device_enable(device_t dev) 1003 { 1004 dev->flags |= DF_ENABLED; 1005 } 1006 1007 void 1008 device_disable(device_t dev) 1009 { 1010 dev->flags &= ~DF_ENABLED; 1011 } 1012 1013 void 1014 device_busy(device_t dev) 1015 { 1016 if (dev->state < DS_ATTACHED) 1017 panic("device_busy: called for unattached device"); 1018 if (dev->busy == 0 && dev->parent) 1019 device_busy(dev->parent); 1020 dev->busy++; 1021 dev->state = DS_BUSY; 1022 } 1023 1024 void 1025 device_unbusy(device_t dev) 1026 { 1027 if (dev->state != DS_BUSY) 1028 panic("device_unbusy: called for non-busy device"); 1029 dev->busy--; 1030 if (dev->busy == 0) { 1031 if (dev->parent) 1032 device_unbusy(dev->parent); 1033 dev->state = DS_ATTACHED; 1034 } 1035 } 1036 1037 void 1038 device_quiet(device_t dev) 1039 { 1040 dev->flags |= DF_QUIET; 1041 } 1042 1043 void 1044 device_verbose(device_t dev) 1045 { 1046 dev->flags &= ~DF_QUIET; 1047 } 1048 1049 int 1050 device_is_quiet(device_t dev) 1051 { 1052 return (dev->flags & DF_QUIET) != 0; 1053 } 1054 1055 int 1056 device_is_enabled(device_t dev) 1057 { 1058 return (dev->flags & DF_ENABLED) != 0; 1059 } 1060 1061 int 1062 device_is_alive(device_t dev) 1063 { 1064 return dev->state >= DS_ALIVE; 1065 } 1066 1067 int 1068 device_set_devclass(device_t dev, const char *classname) 1069 { 1070 devclass_t dc; 1071 1072 if (dev->devclass) { 1073 printf("device_set_devclass: device class already set\n"); 1074 return EINVAL; 1075 } 1076 1077 dc = devclass_find_internal(classname, TRUE); 1078 if (!dc) 1079 return ENOMEM; 1080 1081 return devclass_add_device(dc, dev); 1082 } 1083 1084 int 1085 device_set_driver(device_t dev, driver_t *driver) 1086 { 1087 if (dev->state >= DS_ATTACHED) 1088 return EBUSY; 1089 1090 if (dev->driver == driver) 1091 return 0; 1092 1093 if (dev->softc) { 1094 free(dev->softc, M_BUS); 1095 dev->softc = NULL; 1096 } 1097 dev->ops = &null_ops; 1098 dev->driver = driver; 1099 if (driver) { 1100 dev->ops = driver->ops; 1101 dev->softc = malloc(driver->softc, M_BUS, M_NOWAIT); 1102 if (!dev->softc) { 1103 dev->ops = &null_ops; 1104 dev->driver = NULL; 1105 return ENOMEM; 1106 } 1107 bzero(dev->softc, driver->softc); 1108 } 1109 return 0; 1110 } 1111 1112 int 1113 device_probe_and_attach(device_t dev) 1114 { 1115 device_t bus = dev->parent; 1116 int error = 0; 1117 1118 if (dev->state >= DS_ALIVE) 1119 return 0; 1120 1121 if (dev->flags & DF_ENABLED) { 1122 error = device_probe_child(bus, dev); 1123 if (!error) { 1124 if (!device_is_quiet(dev)) 1125 device_print_child(bus, dev); 1126 error = DEVICE_ATTACH(dev); 1127 if (!error) 1128 dev->state = DS_ATTACHED; 1129 else { 1130 printf("device_probe_and_attach: %s%d attach returned %d\n", 1131 dev->driver->name, dev->unit, error); 1132 device_set_driver(dev, NULL); 1133 dev->state = DS_NOTPRESENT; 1134 } 1135 } else { 1136 BUS_PROBE_NOMATCH(bus, dev); 1137 } 1138 } else { 1139 device_print_prettyname(dev); 1140 printf("not probed (disabled)\n"); 1141 } 1142 1143 return error; 1144 } 1145 1146 int 1147 device_detach(device_t dev) 1148 { 1149 int error; 1150 1151 PDEBUG(("%s", DEVICENAME(dev))); 1152 if (dev->state == DS_BUSY) 1153 return EBUSY; 1154 if (dev->state != DS_ATTACHED) 1155 return 0; 1156 1157 if ((error = DEVICE_DETACH(dev)) != 0) 1158 return error; 1159 if (dev->parent) 1160 BUS_CHILD_DETACHED(dev->parent, dev); 1161 1162 if (!(dev->flags & DF_FIXEDCLASS)) 1163 devclass_delete_device(dev->devclass, dev); 1164 1165 dev->state = DS_NOTPRESENT; 1166 device_set_driver(dev, NULL); 1167 1168 return 0; 1169 } 1170 1171 int 1172 device_shutdown(device_t dev) 1173 { 1174 if (dev->state < DS_ATTACHED) 1175 return 0; 1176 return DEVICE_SHUTDOWN(dev); 1177 } 1178 1179 #ifdef DEVICE_SYSCTLS 1180 1181 /* 1182 * Sysctl nodes for devices. 1183 */ 1184 1185 SYSCTL_NODE(_hw, OID_AUTO, devices, CTLFLAG_RW, 0, "A list of all devices"); 1186 1187 static int 1188 sysctl_handle_children SYSCTL_HANDLER_ARGS 1189 { 1190 device_t dev = arg1; 1191 device_t child; 1192 int first = 1, error = 0; 1193 1194 for (child = TAILQ_FIRST(&dev->children); child; 1195 child = TAILQ_NEXT(child, link)) { 1196 if (child->nameunit) { 1197 if (!first) { 1198 error = SYSCTL_OUT(req, ",", 1); 1199 if (error) return error; 1200 } else { 1201 first = 0; 1202 } 1203 error = SYSCTL_OUT(req, child->nameunit, strlen(child->nameunit)); 1204 if (error) return error; 1205 } 1206 } 1207 1208 error = SYSCTL_OUT(req, "", 1); 1209 1210 return error; 1211 } 1212 1213 static int 1214 sysctl_handle_state SYSCTL_HANDLER_ARGS 1215 { 1216 device_t dev = arg1; 1217 1218 switch (dev->state) { 1219 case DS_NOTPRESENT: 1220 return SYSCTL_OUT(req, "notpresent", sizeof("notpresent")); 1221 case DS_ALIVE: 1222 return SYSCTL_OUT(req, "alive", sizeof("alive")); 1223 case DS_ATTACHED: 1224 return SYSCTL_OUT(req, "attached", sizeof("attached")); 1225 case DS_BUSY: 1226 return SYSCTL_OUT(req, "busy", sizeof("busy")); 1227 } 1228 1229 return 0; 1230 } 1231 1232 static void 1233 device_register_oids(device_t dev) 1234 { 1235 struct sysctl_oid* oid; 1236 1237 oid = &dev->oid[0]; 1238 bzero(oid, sizeof(*oid)); 1239 oid->oid_parent = &sysctl__hw_devices_children; 1240 oid->oid_number = OID_AUTO; 1241 oid->oid_kind = CTLTYPE_NODE | CTLFLAG_RW; 1242 oid->oid_arg1 = &dev->oidlist[0]; 1243 oid->oid_arg2 = 0; 1244 oid->oid_name = dev->nameunit; 1245 oid->oid_handler = 0; 1246 oid->oid_fmt = "N"; 1247 SLIST_INIT(&dev->oidlist[0]); 1248 sysctl_register_oid(oid); 1249 1250 oid = &dev->oid[1]; 1251 bzero(oid, sizeof(*oid)); 1252 oid->oid_parent = &dev->oidlist[0]; 1253 oid->oid_number = OID_AUTO; 1254 oid->oid_kind = CTLTYPE_STRING | CTLFLAG_RD; 1255 oid->oid_arg1 = dev->desc ? dev->desc : ""; 1256 oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0; 1257 oid->oid_name = "desc"; 1258 oid->oid_handler = sysctl_handle_string; 1259 oid->oid_fmt = "A"; 1260 sysctl_register_oid(oid); 1261 1262 oid = &dev->oid[2]; 1263 bzero(oid, sizeof(*oid)); 1264 oid->oid_parent = &dev->oidlist[0]; 1265 oid->oid_number = OID_AUTO; 1266 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD; 1267 oid->oid_arg1 = dev; 1268 oid->oid_arg2 = 0; 1269 oid->oid_name = "children"; 1270 oid->oid_handler = sysctl_handle_children; 1271 oid->oid_fmt = "A"; 1272 sysctl_register_oid(oid); 1273 1274 oid = &dev->oid[3]; 1275 bzero(oid, sizeof(*oid)); 1276 oid->oid_parent = &dev->oidlist[0]; 1277 oid->oid_number = OID_AUTO; 1278 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD; 1279 oid->oid_arg1 = dev; 1280 oid->oid_arg2 = 0; 1281 oid->oid_name = "state"; 1282 oid->oid_handler = sysctl_handle_state; 1283 oid->oid_fmt = "A"; 1284 sysctl_register_oid(oid); 1285 } 1286 1287 static void 1288 device_unregister_oids(device_t dev) 1289 { 1290 sysctl_unregister_oid(&dev->oid[0]); 1291 sysctl_unregister_oid(&dev->oid[1]); 1292 sysctl_unregister_oid(&dev->oid[2]); 1293 } 1294 1295 #endif 1296 1297 /*======================================*/ 1298 /* 1299 * Access functions for device resources. 1300 */ 1301 1302 /* Supplied by config(8) in ioconf.c */ 1303 extern struct config_device config_devtab[]; 1304 extern int devtab_count; 1305 1306 /* Runtime version */ 1307 struct config_device *devtab = config_devtab; 1308 1309 static int 1310 resource_new_name(const char *name, int unit) 1311 { 1312 struct config_device *new; 1313 1314 new = malloc((devtab_count + 1) * sizeof(*new), M_TEMP, M_NOWAIT); 1315 if (new == NULL) 1316 return -1; 1317 if (devtab && devtab_count > 0) 1318 bcopy(devtab, new, devtab_count * sizeof(*new)); 1319 bzero(&new[devtab_count], sizeof(*new)); 1320 new[devtab_count].name = malloc(strlen(name) + 1, M_TEMP, M_NOWAIT); 1321 if (new[devtab_count].name == NULL) { 1322 free(new, M_TEMP); 1323 return -1; 1324 } 1325 strcpy(new[devtab_count].name, name); 1326 new[devtab_count].unit = unit; 1327 new[devtab_count].resource_count = 0; 1328 new[devtab_count].resources = NULL; 1329 devtab = new; 1330 return devtab_count++; 1331 } 1332 1333 static int 1334 resource_new_resname(int j, const char *resname, resource_type type) 1335 { 1336 struct config_resource *new; 1337 int i; 1338 1339 i = devtab[j].resource_count; 1340 new = malloc((i + 1) * sizeof(*new), M_TEMP, M_NOWAIT); 1341 if (new == NULL) 1342 return -1; 1343 if (devtab[j].resources && i > 0) 1344 bcopy(devtab[j].resources, new, i * sizeof(*new)); 1345 bzero(&new[i], sizeof(*new)); 1346 new[i].name = malloc(strlen(resname) + 1, M_TEMP, M_NOWAIT); 1347 if (new[i].name == NULL) { 1348 free(new, M_TEMP); 1349 return -1; 1350 } 1351 strcpy(new[i].name, resname); 1352 new[i].type = type; 1353 if (devtab[j].resources) 1354 free(devtab[j].resources, M_TEMP); 1355 devtab[j].resources = new; 1356 devtab[j].resource_count = i + 1; 1357 return i; 1358 } 1359 1360 static int 1361 resource_match_string(int i, const char *resname, const char *value) 1362 { 1363 int j; 1364 struct config_resource *res; 1365 1366 for (j = 0, res = devtab[i].resources; 1367 j < devtab[i].resource_count; j++, res++) 1368 if (!strcmp(res->name, resname) 1369 && res->type == RES_STRING 1370 && !strcmp(res->u.stringval, value)) 1371 return j; 1372 return -1; 1373 } 1374 1375 static int 1376 resource_find(const char *name, int unit, const char *resname, 1377 struct config_resource **result) 1378 { 1379 int i, j; 1380 struct config_resource *res; 1381 1382 /* 1383 * First check specific instances, then generic. 1384 */ 1385 for (i = 0; i < devtab_count; i++) { 1386 if (devtab[i].unit < 0) 1387 continue; 1388 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1389 res = devtab[i].resources; 1390 for (j = 0; j < devtab[i].resource_count; j++, res++) 1391 if (!strcmp(res->name, resname)) { 1392 *result = res; 1393 return 0; 1394 } 1395 } 1396 } 1397 for (i = 0; i < devtab_count; i++) { 1398 if (devtab[i].unit >= 0) 1399 continue; 1400 /* XXX should this `&& devtab[i].unit == unit' be here? */ 1401 /* XXX if so, then the generic match does nothing */ 1402 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1403 res = devtab[i].resources; 1404 for (j = 0; j < devtab[i].resource_count; j++, res++) 1405 if (!strcmp(res->name, resname)) { 1406 *result = res; 1407 return 0; 1408 } 1409 } 1410 } 1411 return ENOENT; 1412 } 1413 1414 int 1415 resource_int_value(const char *name, int unit, const char *resname, int *result) 1416 { 1417 int error; 1418 struct config_resource *res; 1419 1420 if ((error = resource_find(name, unit, resname, &res)) != 0) 1421 return error; 1422 if (res->type != RES_INT) 1423 return EFTYPE; 1424 *result = res->u.intval; 1425 return 0; 1426 } 1427 1428 int 1429 resource_long_value(const char *name, int unit, const char *resname, 1430 long *result) 1431 { 1432 int error; 1433 struct config_resource *res; 1434 1435 if ((error = resource_find(name, unit, resname, &res)) != 0) 1436 return error; 1437 if (res->type != RES_LONG) 1438 return EFTYPE; 1439 *result = res->u.longval; 1440 return 0; 1441 } 1442 1443 int 1444 resource_string_value(const char *name, int unit, const char *resname, 1445 char **result) 1446 { 1447 int error; 1448 struct config_resource *res; 1449 1450 if ((error = resource_find(name, unit, resname, &res)) != 0) 1451 return error; 1452 if (res->type != RES_STRING) 1453 return EFTYPE; 1454 *result = res->u.stringval; 1455 return 0; 1456 } 1457 1458 int 1459 resource_query_string(int i, const char *resname, const char *value) 1460 { 1461 if (i < 0) 1462 i = 0; 1463 else 1464 i = i + 1; 1465 for (; i < devtab_count; i++) 1466 if (resource_match_string(i, resname, value) >= 0) 1467 return i; 1468 return -1; 1469 } 1470 1471 int 1472 resource_locate(int i, const char *resname) 1473 { 1474 if (i < 0) 1475 i = 0; 1476 else 1477 i = i + 1; 1478 for (; i < devtab_count; i++) 1479 if (!strcmp(devtab[i].name, resname)) 1480 return i; 1481 return -1; 1482 } 1483 1484 int 1485 resource_count(void) 1486 { 1487 return devtab_count; 1488 } 1489 1490 char * 1491 resource_query_name(int i) 1492 { 1493 return devtab[i].name; 1494 } 1495 1496 int 1497 resource_query_unit(int i) 1498 { 1499 return devtab[i].unit; 1500 } 1501 1502 static int 1503 resource_create(const char *name, int unit, const char *resname, 1504 resource_type type, struct config_resource **result) 1505 { 1506 int i, j; 1507 struct config_resource *res = NULL; 1508 1509 for (i = 0; i < devtab_count; i++) { 1510 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1511 res = devtab[i].resources; 1512 break; 1513 } 1514 } 1515 if (res == NULL) { 1516 i = resource_new_name(name, unit); 1517 if (i < 0) 1518 return ENOMEM; 1519 res = devtab[i].resources; 1520 } 1521 for (j = 0; j < devtab[i].resource_count; j++, res++) { 1522 if (!strcmp(res->name, resname)) { 1523 *result = res; 1524 return 0; 1525 } 1526 } 1527 j = resource_new_resname(i, resname, type); 1528 if (j < 0) 1529 return ENOMEM; 1530 res = &devtab[i].resources[j]; 1531 *result = res; 1532 return 0; 1533 } 1534 1535 int 1536 resource_set_int(const char *name, int unit, const char *resname, int value) 1537 { 1538 int error; 1539 struct config_resource *res; 1540 1541 error = resource_create(name, unit, resname, RES_INT, &res); 1542 if (error) 1543 return error; 1544 if (res->type != RES_INT) 1545 return EFTYPE; 1546 res->u.intval = value; 1547 return 0; 1548 } 1549 1550 int 1551 resource_set_long(const char *name, int unit, const char *resname, long value) 1552 { 1553 int error; 1554 struct config_resource *res; 1555 1556 error = resource_create(name, unit, resname, RES_LONG, &res); 1557 if (error) 1558 return error; 1559 if (res->type != RES_LONG) 1560 return EFTYPE; 1561 res->u.longval = value; 1562 return 0; 1563 } 1564 1565 int 1566 resource_set_string(const char *name, int unit, const char *resname, 1567 const char *value) 1568 { 1569 int error; 1570 struct config_resource *res; 1571 1572 error = resource_create(name, unit, resname, RES_STRING, &res); 1573 if (error) 1574 return error; 1575 if (res->type != RES_STRING) 1576 return EFTYPE; 1577 if (res->u.stringval) 1578 free(res->u.stringval, M_TEMP); 1579 res->u.stringval = malloc(strlen(value) + 1, M_TEMP, M_NOWAIT); 1580 if (res->u.stringval == NULL) 1581 return ENOMEM; 1582 strcpy(res->u.stringval, value); 1583 return 0; 1584 } 1585 1586 1587 static void 1588 resource_cfgload(void *dummy __unused) 1589 { 1590 struct config_resource *res, *cfgres; 1591 int i, j; 1592 int error; 1593 char *name, *resname; 1594 int unit; 1595 resource_type type; 1596 char *stringval; 1597 int config_devtab_count; 1598 1599 config_devtab_count = devtab_count; 1600 devtab = NULL; 1601 devtab_count = 0; 1602 1603 for (i = 0; i < config_devtab_count; i++) { 1604 name = config_devtab[i].name; 1605 unit = config_devtab[i].unit; 1606 1607 for (j = 0; j < config_devtab[i].resource_count; j++) { 1608 cfgres = config_devtab[i].resources; 1609 resname = cfgres[j].name; 1610 type = cfgres[j].type; 1611 error = resource_create(name, unit, resname, type, 1612 &res); 1613 if (error) { 1614 printf("create resource %s%d: error %d\n", 1615 name, unit, error); 1616 continue; 1617 } 1618 if (res->type != type) { 1619 printf("type mismatch %s%d: %d != %d\n", 1620 name, unit, res->type, type); 1621 continue; 1622 } 1623 switch (type) { 1624 case RES_INT: 1625 res->u.intval = cfgres[j].u.intval; 1626 break; 1627 case RES_LONG: 1628 res->u.longval = cfgres[j].u.longval; 1629 break; 1630 case RES_STRING: 1631 if (res->u.stringval) 1632 free(res->u.stringval, M_TEMP); 1633 stringval = cfgres[j].u.stringval; 1634 res->u.stringval = malloc(strlen(stringval) + 1, 1635 M_TEMP, M_NOWAIT); 1636 if (res->u.stringval == NULL) 1637 break; 1638 strcpy(res->u.stringval, stringval); 1639 break; 1640 default: 1641 panic("unknown resource type %d\n", type); 1642 } 1643 } 1644 } 1645 } 1646 SYSINIT(cfgload, SI_SUB_KMEM, SI_ORDER_ANY + 50, resource_cfgload, 0) 1647 1648 1649 /*======================================*/ 1650 /* 1651 * Some useful method implementations to make life easier for bus drivers. 1652 */ 1653 1654 void 1655 resource_list_init(struct resource_list *rl) 1656 { 1657 SLIST_INIT(rl); 1658 } 1659 1660 void 1661 resource_list_free(struct resource_list *rl) 1662 { 1663 struct resource_list_entry *rle; 1664 1665 while ((rle = SLIST_FIRST(rl)) != NULL) { 1666 if (rle->res) 1667 panic("resource_list_free: resource entry is busy"); 1668 SLIST_REMOVE_HEAD(rl, link); 1669 free(rle, M_BUS); 1670 } 1671 } 1672 1673 void 1674 resource_list_add(struct resource_list *rl, 1675 int type, int rid, 1676 u_long start, u_long end, u_long count) 1677 { 1678 struct resource_list_entry *rle; 1679 1680 rle = resource_list_find(rl, type, rid); 1681 if (!rle) { 1682 rle = malloc(sizeof(struct resource_list_entry), M_BUS, M_NOWAIT); 1683 if (!rle) 1684 panic("resource_list_add: can't record entry"); 1685 SLIST_INSERT_HEAD(rl, rle, link); 1686 rle->type = type; 1687 rle->rid = rid; 1688 rle->res = NULL; 1689 } 1690 1691 if (rle->res) 1692 panic("resource_list_add: resource entry is busy"); 1693 1694 rle->start = start; 1695 rle->end = end; 1696 rle->count = count; 1697 } 1698 1699 struct resource_list_entry* 1700 resource_list_find(struct resource_list *rl, 1701 int type, int rid) 1702 { 1703 struct resource_list_entry *rle; 1704 1705 SLIST_FOREACH(rle, rl, link) 1706 if (rle->type == type && rle->rid == rid) 1707 return rle; 1708 return NULL; 1709 } 1710 1711 void 1712 resource_list_delete(struct resource_list *rl, 1713 int type, int rid) 1714 { 1715 struct resource_list_entry *rle = resource_list_find(rl, type, rid); 1716 1717 if (rle) { 1718 SLIST_REMOVE(rl, rle, resource_list_entry, link); 1719 free(rle, M_BUS); 1720 } 1721 } 1722 1723 struct resource * 1724 resource_list_alloc(struct resource_list *rl, 1725 device_t bus, device_t child, 1726 int type, int *rid, 1727 u_long start, u_long end, 1728 u_long count, u_int flags) 1729 { 1730 struct resource_list_entry *rle = 0; 1731 int passthrough = (device_get_parent(child) != bus); 1732 int isdefault = (start == 0UL && end == ~0UL); 1733 1734 if (passthrough) { 1735 return BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1736 type, rid, 1737 start, end, count, flags); 1738 } 1739 1740 rle = resource_list_find(rl, type, *rid); 1741 1742 if (!rle) 1743 return 0; /* no resource of that type/rid */ 1744 if (rle->res) 1745 panic("resource_list_alloc: resource entry is busy"); 1746 1747 if (isdefault) { 1748 start = rle->start; 1749 count = max(count, rle->count); 1750 end = max(rle->end, start + count - 1); 1751 } 1752 1753 rle->res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1754 type, rid, start, end, count, flags); 1755 1756 /* 1757 * Record the new range. 1758 */ 1759 if (rle->res) { 1760 rle->start = rman_get_start(rle->res); 1761 rle->end = rman_get_end(rle->res); 1762 rle->count = count; 1763 } 1764 1765 return rle->res; 1766 } 1767 1768 int 1769 resource_list_release(struct resource_list *rl, 1770 device_t bus, device_t child, 1771 int type, int rid, struct resource *res) 1772 { 1773 struct resource_list_entry *rle = 0; 1774 int passthrough = (device_get_parent(child) != bus); 1775 int error; 1776 1777 if (passthrough) { 1778 return BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1779 type, rid, res); 1780 } 1781 1782 rle = resource_list_find(rl, type, rid); 1783 1784 if (!rle) 1785 panic("resource_list_release: can't find resource"); 1786 if (!rle->res) 1787 panic("resource_list_release: resource entry is not busy"); 1788 1789 error = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1790 type, rid, res); 1791 if (error) 1792 return error; 1793 1794 rle->res = NULL; 1795 return 0; 1796 } 1797 1798 /* 1799 * Call DEVICE_IDENTIFY for each driver. 1800 */ 1801 int 1802 bus_generic_probe(device_t dev) 1803 { 1804 devclass_t dc = dev->devclass; 1805 driverlink_t dl; 1806 1807 for (dl = TAILQ_FIRST(&dc->drivers); dl; dl = TAILQ_NEXT(dl, link)) 1808 DEVICE_IDENTIFY(dl->driver, dev); 1809 1810 return 0; 1811 } 1812 1813 int 1814 bus_generic_attach(device_t dev) 1815 { 1816 device_t child; 1817 1818 for (child = TAILQ_FIRST(&dev->children); 1819 child; child = TAILQ_NEXT(child, link)) 1820 device_probe_and_attach(child); 1821 1822 return 0; 1823 } 1824 1825 int 1826 bus_generic_detach(device_t dev) 1827 { 1828 device_t child; 1829 int error; 1830 1831 if (dev->state != DS_ATTACHED) 1832 return EBUSY; 1833 1834 for (child = TAILQ_FIRST(&dev->children); 1835 child; child = TAILQ_NEXT(child, link)) 1836 if ((error = device_detach(child)) != 0) 1837 return error; 1838 1839 return 0; 1840 } 1841 1842 int 1843 bus_generic_shutdown(device_t dev) 1844 { 1845 device_t child; 1846 1847 for (child = TAILQ_FIRST(&dev->children); 1848 child; child = TAILQ_NEXT(child, link)) 1849 device_shutdown(child); 1850 1851 return 0; 1852 } 1853 1854 int 1855 bus_generic_suspend(device_t dev) 1856 { 1857 int error; 1858 device_t child, child2; 1859 1860 for (child = TAILQ_FIRST(&dev->children); 1861 child; child = TAILQ_NEXT(child, link)) { 1862 error = DEVICE_SUSPEND(child); 1863 if (error) { 1864 for (child2 = TAILQ_FIRST(&dev->children); 1865 child2 && child2 != child; 1866 child2 = TAILQ_NEXT(child2, link)) 1867 DEVICE_RESUME(child2); 1868 return (error); 1869 } 1870 } 1871 return 0; 1872 } 1873 1874 int 1875 bus_generic_resume(device_t dev) 1876 { 1877 device_t child; 1878 1879 for (child = TAILQ_FIRST(&dev->children); 1880 child; child = TAILQ_NEXT(child, link)) { 1881 DEVICE_RESUME(child); 1882 /* if resume fails, there's nothing we can usefully do... */ 1883 } 1884 return 0; 1885 } 1886 1887 int 1888 bus_print_child_header (device_t dev, device_t child) 1889 { 1890 int retval = 0; 1891 1892 if (device_get_desc(child)) { 1893 retval += device_printf(child, "<%s>", 1894 device_get_desc(child)); 1895 } else { 1896 retval += printf("%s", device_get_nameunit(child)); 1897 } 1898 1899 return (retval); 1900 } 1901 1902 int 1903 bus_print_child_footer (device_t dev, device_t child) 1904 { 1905 return(printf(" on %s\n", device_get_nameunit(dev))); 1906 } 1907 1908 int 1909 bus_generic_print_child(device_t dev, device_t child) 1910 { 1911 int retval = 0; 1912 1913 retval += bus_print_child_header(dev, child); 1914 retval += bus_print_child_footer(dev, child); 1915 1916 return (retval); 1917 } 1918 1919 int 1920 bus_generic_read_ivar(device_t dev, device_t child, int index, 1921 uintptr_t * result) 1922 { 1923 return ENOENT; 1924 } 1925 1926 int 1927 bus_generic_write_ivar(device_t dev, device_t child, int index, 1928 uintptr_t value) 1929 { 1930 return ENOENT; 1931 } 1932 1933 void 1934 bus_generic_driver_added(device_t dev, driver_t *driver) 1935 { 1936 device_t child; 1937 1938 DEVICE_IDENTIFY(driver, dev); 1939 for (child = TAILQ_FIRST(&dev->children); 1940 child; child = TAILQ_NEXT(child, link)) 1941 if (child->state == DS_NOTPRESENT) 1942 device_probe_and_attach(child); 1943 } 1944 1945 int 1946 bus_generic_setup_intr(device_t dev, device_t child, struct resource *irq, 1947 int flags, driver_intr_t *intr, void *arg, 1948 void **cookiep) 1949 { 1950 /* Propagate up the bus hierarchy until someone handles it. */ 1951 if (dev->parent) 1952 return (BUS_SETUP_INTR(dev->parent, child, irq, flags, 1953 intr, arg, cookiep)); 1954 else 1955 return (EINVAL); 1956 } 1957 1958 int 1959 bus_generic_teardown_intr(device_t dev, device_t child, struct resource *irq, 1960 void *cookie) 1961 { 1962 /* Propagate up the bus hierarchy until someone handles it. */ 1963 if (dev->parent) 1964 return (BUS_TEARDOWN_INTR(dev->parent, child, irq, cookie)); 1965 else 1966 return (EINVAL); 1967 } 1968 1969 struct resource * 1970 bus_generic_alloc_resource(device_t dev, device_t child, int type, int *rid, 1971 u_long start, u_long end, u_long count, u_int flags) 1972 { 1973 /* Propagate up the bus hierarchy until someone handles it. */ 1974 if (dev->parent) 1975 return (BUS_ALLOC_RESOURCE(dev->parent, child, type, rid, 1976 start, end, count, flags)); 1977 else 1978 return (NULL); 1979 } 1980 1981 int 1982 bus_generic_release_resource(device_t dev, device_t child, int type, int rid, 1983 struct resource *r) 1984 { 1985 /* Propagate up the bus hierarchy until someone handles it. */ 1986 if (dev->parent) 1987 return (BUS_RELEASE_RESOURCE(dev->parent, child, type, rid, 1988 r)); 1989 else 1990 return (EINVAL); 1991 } 1992 1993 int 1994 bus_generic_activate_resource(device_t dev, device_t child, int type, int rid, 1995 struct resource *r) 1996 { 1997 /* Propagate up the bus hierarchy until someone handles it. */ 1998 if (dev->parent) 1999 return (BUS_ACTIVATE_RESOURCE(dev->parent, child, type, rid, 2000 r)); 2001 else 2002 return (EINVAL); 2003 } 2004 2005 int 2006 bus_generic_deactivate_resource(device_t dev, device_t child, int type, 2007 int rid, struct resource *r) 2008 { 2009 /* Propagate up the bus hierarchy until someone handles it. */ 2010 if (dev->parent) 2011 return (BUS_DEACTIVATE_RESOURCE(dev->parent, child, type, rid, 2012 r)); 2013 else 2014 return (EINVAL); 2015 } 2016 2017 /* 2018 * Some convenience functions to make it easier for drivers to use the 2019 * resource-management functions. All these really do is hide the 2020 * indirection through the parent's method table, making for slightly 2021 * less-wordy code. In the future, it might make sense for this code 2022 * to maintain some sort of a list of resources allocated by each device. 2023 */ 2024 struct resource * 2025 bus_alloc_resource(device_t dev, int type, int *rid, u_long start, u_long end, 2026 u_long count, u_int flags) 2027 { 2028 if (dev->parent == 0) 2029 return (0); 2030 return (BUS_ALLOC_RESOURCE(dev->parent, dev, type, rid, start, end, 2031 count, flags)); 2032 } 2033 2034 int 2035 bus_activate_resource(device_t dev, int type, int rid, struct resource *r) 2036 { 2037 if (dev->parent == 0) 2038 return (EINVAL); 2039 return (BUS_ACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 2040 } 2041 2042 int 2043 bus_deactivate_resource(device_t dev, int type, int rid, struct resource *r) 2044 { 2045 if (dev->parent == 0) 2046 return (EINVAL); 2047 return (BUS_DEACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 2048 } 2049 2050 int 2051 bus_release_resource(device_t dev, int type, int rid, struct resource *r) 2052 { 2053 if (dev->parent == 0) 2054 return (EINVAL); 2055 return (BUS_RELEASE_RESOURCE(dev->parent, dev, 2056 type, rid, r)); 2057 } 2058 2059 int 2060 bus_setup_intr(device_t dev, struct resource *r, int flags, 2061 driver_intr_t handler, void *arg, void **cookiep) 2062 { 2063 if (dev->parent == 0) 2064 return (EINVAL); 2065 return (BUS_SETUP_INTR(dev->parent, dev, r, flags, 2066 handler, arg, cookiep)); 2067 } 2068 2069 int 2070 bus_teardown_intr(device_t dev, struct resource *r, void *cookie) 2071 { 2072 if (dev->parent == 0) 2073 return (EINVAL); 2074 return (BUS_TEARDOWN_INTR(dev->parent, dev, r, cookie)); 2075 } 2076 2077 int 2078 bus_set_resource(device_t dev, int type, int rid, 2079 u_long start, u_long count) 2080 { 2081 return BUS_SET_RESOURCE(device_get_parent(dev), dev, type, rid, 2082 start, count); 2083 } 2084 2085 int 2086 bus_get_resource(device_t dev, int type, int rid, 2087 u_long *startp, u_long *countp) 2088 { 2089 return BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2090 startp, countp); 2091 } 2092 2093 u_long 2094 bus_get_resource_start(device_t dev, int type, int rid) 2095 { 2096 u_long start, count; 2097 int error; 2098 2099 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2100 &start, &count); 2101 if (error) 2102 return 0; 2103 return start; 2104 } 2105 2106 u_long 2107 bus_get_resource_count(device_t dev, int type, int rid) 2108 { 2109 u_long start, count; 2110 int error; 2111 2112 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2113 &start, &count); 2114 if (error) 2115 return 0; 2116 return count; 2117 } 2118 2119 void 2120 bus_delete_resource(device_t dev, int type, int rid) 2121 { 2122 BUS_DELETE_RESOURCE(device_get_parent(dev), dev, type, rid); 2123 } 2124 2125 static int 2126 root_print_child(device_t dev, device_t child) 2127 { 2128 return (0); 2129 } 2130 2131 static int 2132 root_setup_intr(device_t dev, device_t child, driver_intr_t *intr, void *arg, 2133 void **cookiep) 2134 { 2135 /* 2136 * If an interrupt mapping gets to here something bad has happened. 2137 */ 2138 panic("root_setup_intr"); 2139 } 2140 2141 static device_method_t root_methods[] = { 2142 /* Device interface */ 2143 DEVMETHOD(device_shutdown, bus_generic_shutdown), 2144 DEVMETHOD(device_suspend, bus_generic_suspend), 2145 DEVMETHOD(device_resume, bus_generic_resume), 2146 2147 /* Bus interface */ 2148 DEVMETHOD(bus_print_child, root_print_child), 2149 DEVMETHOD(bus_read_ivar, bus_generic_read_ivar), 2150 DEVMETHOD(bus_write_ivar, bus_generic_write_ivar), 2151 DEVMETHOD(bus_setup_intr, root_setup_intr), 2152 2153 { 0, 0 } 2154 }; 2155 2156 static driver_t root_driver = { 2157 "root", 2158 root_methods, 2159 1, /* no softc */ 2160 }; 2161 2162 device_t root_bus; 2163 devclass_t root_devclass; 2164 2165 static int 2166 root_bus_module_handler(module_t mod, int what, void* arg) 2167 { 2168 switch (what) { 2169 case MOD_LOAD: 2170 compile_methods(&root_driver); 2171 root_bus = make_device(NULL, "root", 0); 2172 root_bus->desc = "System root bus"; 2173 root_bus->ops = root_driver.ops; 2174 root_bus->driver = &root_driver; 2175 root_bus->state = DS_ATTACHED; 2176 root_devclass = devclass_find_internal("root", FALSE); 2177 return 0; 2178 2179 case MOD_SHUTDOWN: 2180 device_shutdown(root_bus); 2181 return 0; 2182 } 2183 2184 return 0; 2185 } 2186 2187 static moduledata_t root_bus_mod = { 2188 "rootbus", 2189 root_bus_module_handler, 2190 0 2191 }; 2192 DECLARE_MODULE(rootbus, root_bus_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 2193 2194 void 2195 root_bus_configure(void) 2196 { 2197 device_t dev; 2198 2199 PDEBUG((".")); 2200 2201 for (dev = TAILQ_FIRST(&root_bus->children); dev; 2202 dev = TAILQ_NEXT(dev, link)) { 2203 device_probe_and_attach(dev); 2204 } 2205 } 2206 2207 int 2208 driver_module_handler(module_t mod, int what, void *arg) 2209 { 2210 int error, i; 2211 struct driver_module_data *dmd; 2212 devclass_t bus_devclass; 2213 2214 dmd = (struct driver_module_data *)arg; 2215 bus_devclass = devclass_find_internal(dmd->dmd_busname, TRUE); 2216 error = 0; 2217 2218 switch (what) { 2219 case MOD_LOAD: 2220 if (dmd->dmd_chainevh) 2221 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2222 2223 for (i = 0; !error && i < dmd->dmd_ndrivers; i++) { 2224 PDEBUG(("Loading module: driver %s on bus %s", 2225 DRIVERNAME(dmd->dmd_drivers[i]), 2226 dmd->dmd_busname)); 2227 error = devclass_add_driver(bus_devclass, 2228 dmd->dmd_drivers[i]); 2229 } 2230 if (error) 2231 break; 2232 2233 /* 2234 * The drivers loaded in this way are assumed to all 2235 * implement the same devclass. 2236 */ 2237 *dmd->dmd_devclass = 2238 devclass_find_internal(dmd->dmd_drivers[0]->name, 2239 TRUE); 2240 break; 2241 2242 case MOD_UNLOAD: 2243 for (i = 0; !error && i < dmd->dmd_ndrivers; i++) { 2244 PDEBUG(("Unloading module: driver %s from bus %s", 2245 DRIVERNAME(dmd->dmd_drivers[i]), 2246 dmd->dmd_busname)); 2247 error = devclass_delete_driver(bus_devclass, 2248 dmd->dmd_drivers[i]); 2249 } 2250 2251 if (!error && dmd->dmd_chainevh) 2252 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2253 break; 2254 } 2255 2256 return (error); 2257 } 2258 2259 #ifdef BUS_DEBUG 2260 2261 /* the _short versions avoid iteration by not calling anything that prints 2262 * more than oneliners. I love oneliners. 2263 */ 2264 2265 static void 2266 print_method_list(device_method_t *m, int indent) 2267 { 2268 int i; 2269 2270 if (!m) 2271 return; 2272 2273 for (i = 0; m->desc; i++, m++) 2274 indentprintf(("method %d: %s, offset=%d\n", 2275 i, m->desc->name, m->desc->offset)); 2276 } 2277 2278 static void 2279 print_device_ops(device_ops_t ops, int indent) 2280 { 2281 int i; 2282 int count = 0; 2283 2284 if (!ops) 2285 return; 2286 2287 /* we present a list of the methods that are pointing to the 2288 * error_method, but ignore the 0'th elements; it is always 2289 * error_method. 2290 */ 2291 for (i = 1; i < ops->maxoffset; i++) { 2292 if (ops->methods[i] == error_method) { 2293 if (count == 0) 2294 indentprintf(("error_method:")); 2295 printf(" %d", i); 2296 count++; 2297 } 2298 } 2299 if (count) 2300 printf("\n"); 2301 2302 indentprintf(("(%d method%s, %d valid, %d error_method%s)\n", 2303 ops->maxoffset-1, (ops->maxoffset-1 == 1? "":"s"), 2304 ops->maxoffset-1-count, 2305 count, (count == 1? "":"'s"))); 2306 } 2307 2308 static void 2309 print_device_short(device_t dev, int indent) 2310 { 2311 if (!dev) 2312 return; 2313 2314 indentprintf(("device %d: <%s> %sparent,%schildren,%s%s%s%s,%sivars,%ssoftc,busy=%d\n", 2315 dev->unit, dev->desc, 2316 (dev->parent? "":"no "), 2317 (TAILQ_EMPTY(&dev->children)? "no ":""), 2318 (dev->flags&DF_ENABLED? "enabled,":"disabled,"), 2319 (dev->flags&DF_FIXEDCLASS? "fixed,":""), 2320 (dev->flags&DF_WILDCARD? "wildcard,":""), 2321 (dev->flags&DF_DESCMALLOCED? "descmalloced,":""), 2322 (dev->ivars? "":"no "), 2323 (dev->softc? "":"no "), 2324 dev->busy)); 2325 } 2326 2327 static void 2328 print_device(device_t dev, int indent) 2329 { 2330 if (!dev) 2331 return; 2332 2333 print_device_short(dev, indent); 2334 2335 indentprintf(("Parent:\n")); 2336 print_device_short(dev->parent, indent+1); 2337 indentprintf(("Methods:\n")); 2338 print_device_ops(dev->ops, indent+1); 2339 indentprintf(("Driver:\n")); 2340 print_driver_short(dev->driver, indent+1); 2341 indentprintf(("Devclass:\n")); 2342 print_devclass_short(dev->devclass, indent+1); 2343 } 2344 2345 void 2346 print_device_tree_short(device_t dev, int indent) 2347 /* print the device and all its children (indented) */ 2348 { 2349 device_t child; 2350 2351 if (!dev) 2352 return; 2353 2354 print_device_short(dev, indent); 2355 2356 for (child = TAILQ_FIRST(&dev->children); child; 2357 child = TAILQ_NEXT(child, link)) 2358 print_device_tree_short(child, indent+1); 2359 } 2360 2361 void 2362 print_device_tree(device_t dev, int indent) 2363 /* print the device and all its children (indented) */ 2364 { 2365 device_t child; 2366 2367 if (!dev) 2368 return; 2369 2370 print_device(dev, indent); 2371 2372 for (child = TAILQ_FIRST(&dev->children); child; 2373 child = TAILQ_NEXT(child, link)) 2374 print_device_tree(child, indent+1); 2375 } 2376 2377 static void 2378 print_driver_short(driver_t *driver, int indent) 2379 { 2380 if (!driver) 2381 return; 2382 2383 indentprintf(("driver %s: softc size = %d\n", 2384 driver->name, driver->softc)); 2385 } 2386 2387 static void 2388 print_driver(driver_t *driver, int indent) 2389 { 2390 if (!driver) 2391 return; 2392 2393 print_driver_short(driver, indent); 2394 indentprintf(("Methods:\n")); 2395 print_method_list(driver->methods, indent+1); 2396 indentprintf(("Operations:\n")); 2397 print_device_ops(driver->ops, indent+1); 2398 } 2399 2400 2401 static void 2402 print_driver_list(driver_list_t drivers, int indent) 2403 { 2404 driverlink_t driver; 2405 2406 for (driver = TAILQ_FIRST(&drivers); driver; 2407 driver = TAILQ_NEXT(driver, link)) 2408 print_driver(driver->driver, indent); 2409 } 2410 2411 static void 2412 print_devclass_short(devclass_t dc, int indent) 2413 { 2414 if ( !dc ) 2415 return; 2416 2417 indentprintf(("devclass %s: max units = %d, next unit = %d\n", 2418 dc->name, dc->maxunit, dc->nextunit)); 2419 } 2420 2421 static void 2422 print_devclass(devclass_t dc, int indent) 2423 { 2424 int i; 2425 2426 if ( !dc ) 2427 return; 2428 2429 print_devclass_short(dc, indent); 2430 indentprintf(("Drivers:\n")); 2431 print_driver_list(dc->drivers, indent+1); 2432 2433 indentprintf(("Devices:\n")); 2434 for (i = 0; i < dc->maxunit; i++) 2435 if (dc->devices[i]) 2436 print_device(dc->devices[i], indent+1); 2437 } 2438 2439 void 2440 print_devclass_list_short(void) 2441 { 2442 devclass_t dc; 2443 2444 printf("Short listing of devclasses, drivers & devices:\n"); 2445 for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) 2446 print_devclass_short(dc, 0); 2447 } 2448 2449 void 2450 print_devclass_list(void) 2451 { 2452 devclass_t dc; 2453 2454 printf("Full listing of devclasses, drivers & devices:\n"); 2455 for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) 2456 print_devclass(dc, 0); 2457 } 2458 2459 #endif 2460