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 int hasclass = (child->devclass != 0); 760 761 dc = dev->devclass; 762 if (!dc) 763 panic("device_probe_child: parent device has no devclass"); 764 765 if (child->state == DS_ALIVE) 766 return 0; 767 768 for (dl = first_matching_driver(dc, child); 769 dl; 770 dl = next_matching_driver(dc, child, dl)) { 771 PDEBUG(("Trying %s", DRIVERNAME(dl->driver))); 772 device_set_driver(child, dl->driver); 773 if (!hasclass) 774 device_set_devclass(child, dl->driver->name); 775 result = DEVICE_PROBE(child); 776 if (!hasclass) 777 device_set_devclass(child, 0); 778 779 /* 780 * If the driver returns SUCCESS, there can be no higher match 781 * for this device. 782 */ 783 if (result == 0) { 784 best = dl; 785 pri = 0; 786 break; 787 } 788 789 /* 790 * The driver returned an error so it certainly doesn't match. 791 */ 792 if (result > 0) 793 continue; 794 795 /* 796 * A priority lower than SUCCESS, remember the best matching 797 * driver. Initialise the value of pri for the first match. 798 */ 799 if (best == 0 || result > pri) { 800 best = dl; 801 pri = result; 802 continue; 803 } 804 } 805 806 /* 807 * If we found a driver, change state and initialise the devclass. 808 */ 809 if (best) { 810 if (!child->devclass) 811 device_set_devclass(child, best->driver->name); 812 device_set_driver(child, best->driver); 813 if (pri < 0) { 814 /* 815 * A bit bogus. Call the probe method again to make sure 816 * that we have the right description. 817 */ 818 DEVICE_PROBE(child); 819 } 820 child->state = DS_ALIVE; 821 return 0; 822 } 823 824 return ENXIO; 825 } 826 827 device_t 828 device_get_parent(device_t dev) 829 { 830 return dev->parent; 831 } 832 833 int 834 device_get_children(device_t dev, device_t **devlistp, int *devcountp) 835 { 836 int count; 837 device_t child; 838 device_t *list; 839 840 count = 0; 841 for (child = TAILQ_FIRST(&dev->children); child; 842 child = TAILQ_NEXT(child, link)) 843 count++; 844 845 list = malloc(count * sizeof(device_t), M_TEMP, M_NOWAIT); 846 if (!list) 847 return ENOMEM; 848 bzero(list, count * sizeof(device_t)); 849 850 count = 0; 851 for (child = TAILQ_FIRST(&dev->children); child; 852 child = TAILQ_NEXT(child, link)) { 853 list[count] = child; 854 count++; 855 } 856 857 *devlistp = list; 858 *devcountp = count; 859 860 return 0; 861 } 862 863 driver_t * 864 device_get_driver(device_t dev) 865 { 866 return dev->driver; 867 } 868 869 devclass_t 870 device_get_devclass(device_t dev) 871 { 872 return dev->devclass; 873 } 874 875 const char * 876 device_get_name(device_t dev) 877 { 878 if (dev->devclass) 879 return devclass_get_name(dev->devclass); 880 return NULL; 881 } 882 883 const char * 884 device_get_nameunit(device_t dev) 885 { 886 return dev->nameunit; 887 } 888 889 int 890 device_get_unit(device_t dev) 891 { 892 return dev->unit; 893 } 894 895 const char * 896 device_get_desc(device_t dev) 897 { 898 return dev->desc; 899 } 900 901 u_int32_t 902 device_get_flags(device_t dev) 903 { 904 return dev->devflags; 905 } 906 907 int 908 device_print_prettyname(device_t dev) 909 { 910 const char *name = device_get_name(dev); 911 912 if (name == 0) 913 return printf("unknown: "); 914 else 915 return printf("%s%d: ", name, device_get_unit(dev)); 916 } 917 918 int 919 device_printf(device_t dev, const char * fmt, ...) 920 { 921 va_list ap; 922 int retval; 923 924 retval = device_print_prettyname(dev); 925 va_start(ap, fmt); 926 retval += vprintf(fmt, ap); 927 va_end(ap); 928 return retval; 929 } 930 931 static void 932 device_set_desc_internal(device_t dev, const char* desc, int copy) 933 { 934 if (dev->desc && (dev->flags & DF_DESCMALLOCED)) { 935 free(dev->desc, M_BUS); 936 dev->flags &= ~DF_DESCMALLOCED; 937 dev->desc = NULL; 938 } 939 940 if (copy && desc) { 941 dev->desc = malloc(strlen(desc) + 1, M_BUS, M_NOWAIT); 942 if (dev->desc) { 943 strcpy(dev->desc, desc); 944 dev->flags |= DF_DESCMALLOCED; 945 } 946 } else 947 /* Avoid a -Wcast-qual warning */ 948 dev->desc = (char *)(uintptr_t) desc; 949 950 #ifdef DEVICE_SYSCTLS 951 { 952 struct sysctl_oid *oid = &dev->oid[1]; 953 oid->oid_arg1 = dev->desc ? dev->desc : ""; 954 oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0; 955 } 956 #endif 957 } 958 959 void 960 device_set_desc(device_t dev, const char* desc) 961 { 962 device_set_desc_internal(dev, desc, FALSE); 963 } 964 965 void 966 device_set_desc_copy(device_t dev, const char* desc) 967 { 968 device_set_desc_internal(dev, desc, TRUE); 969 } 970 971 void 972 device_set_flags(device_t dev, u_int32_t flags) 973 { 974 dev->devflags = flags; 975 } 976 977 void * 978 device_get_softc(device_t dev) 979 { 980 return dev->softc; 981 } 982 983 void * 984 device_get_ivars(device_t dev) 985 { 986 return dev->ivars; 987 } 988 989 void 990 device_set_ivars(device_t dev, void * ivars) 991 { 992 if (!dev) 993 return; 994 995 dev->ivars = ivars; 996 997 return; 998 } 999 1000 device_state_t 1001 device_get_state(device_t dev) 1002 { 1003 return dev->state; 1004 } 1005 1006 void 1007 device_enable(device_t dev) 1008 { 1009 dev->flags |= DF_ENABLED; 1010 } 1011 1012 void 1013 device_disable(device_t dev) 1014 { 1015 dev->flags &= ~DF_ENABLED; 1016 } 1017 1018 void 1019 device_busy(device_t dev) 1020 { 1021 if (dev->state < DS_ATTACHED) 1022 panic("device_busy: called for unattached device"); 1023 if (dev->busy == 0 && dev->parent) 1024 device_busy(dev->parent); 1025 dev->busy++; 1026 dev->state = DS_BUSY; 1027 } 1028 1029 void 1030 device_unbusy(device_t dev) 1031 { 1032 if (dev->state != DS_BUSY) 1033 panic("device_unbusy: called for non-busy device"); 1034 dev->busy--; 1035 if (dev->busy == 0) { 1036 if (dev->parent) 1037 device_unbusy(dev->parent); 1038 dev->state = DS_ATTACHED; 1039 } 1040 } 1041 1042 void 1043 device_quiet(device_t dev) 1044 { 1045 dev->flags |= DF_QUIET; 1046 } 1047 1048 void 1049 device_verbose(device_t dev) 1050 { 1051 dev->flags &= ~DF_QUIET; 1052 } 1053 1054 int 1055 device_is_quiet(device_t dev) 1056 { 1057 return (dev->flags & DF_QUIET) != 0; 1058 } 1059 1060 int 1061 device_is_enabled(device_t dev) 1062 { 1063 return (dev->flags & DF_ENABLED) != 0; 1064 } 1065 1066 int 1067 device_is_alive(device_t dev) 1068 { 1069 return dev->state >= DS_ALIVE; 1070 } 1071 1072 int 1073 device_set_devclass(device_t dev, const char *classname) 1074 { 1075 devclass_t dc; 1076 1077 if (!classname) { 1078 if (dev->devclass) 1079 devclass_delete_device(dev->devclass, dev); 1080 return 0; 1081 } 1082 1083 if (dev->devclass) { 1084 printf("device_set_devclass: device class already set\n"); 1085 return EINVAL; 1086 } 1087 1088 dc = devclass_find_internal(classname, TRUE); 1089 if (!dc) 1090 return ENOMEM; 1091 1092 return devclass_add_device(dc, dev); 1093 } 1094 1095 int 1096 device_set_driver(device_t dev, driver_t *driver) 1097 { 1098 if (dev->state >= DS_ATTACHED) 1099 return EBUSY; 1100 1101 if (dev->driver == driver) 1102 return 0; 1103 1104 if (dev->softc) { 1105 free(dev->softc, M_BUS); 1106 dev->softc = NULL; 1107 } 1108 dev->ops = &null_ops; 1109 dev->driver = driver; 1110 if (driver) { 1111 dev->ops = driver->ops; 1112 dev->softc = malloc(driver->softc, M_BUS, M_NOWAIT); 1113 if (!dev->softc) { 1114 dev->ops = &null_ops; 1115 dev->driver = NULL; 1116 return ENOMEM; 1117 } 1118 bzero(dev->softc, driver->softc); 1119 } 1120 return 0; 1121 } 1122 1123 int 1124 device_probe_and_attach(device_t dev) 1125 { 1126 device_t bus = dev->parent; 1127 int error = 0; 1128 1129 if (dev->state >= DS_ALIVE) 1130 return 0; 1131 1132 if (dev->flags & DF_ENABLED) { 1133 error = device_probe_child(bus, dev); 1134 if (!error) { 1135 if (!device_is_quiet(dev)) 1136 device_print_child(bus, dev); 1137 error = DEVICE_ATTACH(dev); 1138 if (!error) 1139 dev->state = DS_ATTACHED; 1140 else { 1141 printf("device_probe_and_attach: %s%d attach returned %d\n", 1142 dev->driver->name, dev->unit, error); 1143 device_set_driver(dev, NULL); 1144 dev->state = DS_NOTPRESENT; 1145 } 1146 } else { 1147 BUS_PROBE_NOMATCH(bus, dev); 1148 } 1149 } else { 1150 device_print_prettyname(dev); 1151 printf("not probed (disabled)\n"); 1152 } 1153 1154 return error; 1155 } 1156 1157 int 1158 device_detach(device_t dev) 1159 { 1160 int error; 1161 1162 PDEBUG(("%s", DEVICENAME(dev))); 1163 if (dev->state == DS_BUSY) 1164 return EBUSY; 1165 if (dev->state != DS_ATTACHED) 1166 return 0; 1167 1168 if ((error = DEVICE_DETACH(dev)) != 0) 1169 return error; 1170 if (dev->parent) 1171 BUS_CHILD_DETACHED(dev->parent, dev); 1172 1173 if (!(dev->flags & DF_FIXEDCLASS)) 1174 devclass_delete_device(dev->devclass, dev); 1175 1176 dev->state = DS_NOTPRESENT; 1177 device_set_driver(dev, NULL); 1178 1179 return 0; 1180 } 1181 1182 int 1183 device_shutdown(device_t dev) 1184 { 1185 if (dev->state < DS_ATTACHED) 1186 return 0; 1187 return DEVICE_SHUTDOWN(dev); 1188 } 1189 1190 #ifdef DEVICE_SYSCTLS 1191 1192 /* 1193 * Sysctl nodes for devices. 1194 */ 1195 1196 SYSCTL_NODE(_hw, OID_AUTO, devices, CTLFLAG_RW, 0, "A list of all devices"); 1197 1198 static int 1199 sysctl_handle_children SYSCTL_HANDLER_ARGS 1200 { 1201 device_t dev = arg1; 1202 device_t child; 1203 int first = 1, error = 0; 1204 1205 for (child = TAILQ_FIRST(&dev->children); child; 1206 child = TAILQ_NEXT(child, link)) { 1207 if (child->nameunit) { 1208 if (!first) { 1209 error = SYSCTL_OUT(req, ",", 1); 1210 if (error) return error; 1211 } else { 1212 first = 0; 1213 } 1214 error = SYSCTL_OUT(req, child->nameunit, strlen(child->nameunit)); 1215 if (error) return error; 1216 } 1217 } 1218 1219 error = SYSCTL_OUT(req, "", 1); 1220 1221 return error; 1222 } 1223 1224 static int 1225 sysctl_handle_state SYSCTL_HANDLER_ARGS 1226 { 1227 device_t dev = arg1; 1228 1229 switch (dev->state) { 1230 case DS_NOTPRESENT: 1231 return SYSCTL_OUT(req, "notpresent", sizeof("notpresent")); 1232 case DS_ALIVE: 1233 return SYSCTL_OUT(req, "alive", sizeof("alive")); 1234 case DS_ATTACHED: 1235 return SYSCTL_OUT(req, "attached", sizeof("attached")); 1236 case DS_BUSY: 1237 return SYSCTL_OUT(req, "busy", sizeof("busy")); 1238 } 1239 1240 return 0; 1241 } 1242 1243 static void 1244 device_register_oids(device_t dev) 1245 { 1246 struct sysctl_oid* oid; 1247 1248 oid = &dev->oid[0]; 1249 bzero(oid, sizeof(*oid)); 1250 oid->oid_parent = &sysctl__hw_devices_children; 1251 oid->oid_number = OID_AUTO; 1252 oid->oid_kind = CTLTYPE_NODE | CTLFLAG_RW; 1253 oid->oid_arg1 = &dev->oidlist[0]; 1254 oid->oid_arg2 = 0; 1255 oid->oid_name = dev->nameunit; 1256 oid->oid_handler = 0; 1257 oid->oid_fmt = "N"; 1258 SLIST_INIT(&dev->oidlist[0]); 1259 sysctl_register_oid(oid); 1260 1261 oid = &dev->oid[1]; 1262 bzero(oid, sizeof(*oid)); 1263 oid->oid_parent = &dev->oidlist[0]; 1264 oid->oid_number = OID_AUTO; 1265 oid->oid_kind = CTLTYPE_STRING | CTLFLAG_RD; 1266 oid->oid_arg1 = dev->desc ? dev->desc : ""; 1267 oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0; 1268 oid->oid_name = "desc"; 1269 oid->oid_handler = sysctl_handle_string; 1270 oid->oid_fmt = "A"; 1271 sysctl_register_oid(oid); 1272 1273 oid = &dev->oid[2]; 1274 bzero(oid, sizeof(*oid)); 1275 oid->oid_parent = &dev->oidlist[0]; 1276 oid->oid_number = OID_AUTO; 1277 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD; 1278 oid->oid_arg1 = dev; 1279 oid->oid_arg2 = 0; 1280 oid->oid_name = "children"; 1281 oid->oid_handler = sysctl_handle_children; 1282 oid->oid_fmt = "A"; 1283 sysctl_register_oid(oid); 1284 1285 oid = &dev->oid[3]; 1286 bzero(oid, sizeof(*oid)); 1287 oid->oid_parent = &dev->oidlist[0]; 1288 oid->oid_number = OID_AUTO; 1289 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD; 1290 oid->oid_arg1 = dev; 1291 oid->oid_arg2 = 0; 1292 oid->oid_name = "state"; 1293 oid->oid_handler = sysctl_handle_state; 1294 oid->oid_fmt = "A"; 1295 sysctl_register_oid(oid); 1296 } 1297 1298 static void 1299 device_unregister_oids(device_t dev) 1300 { 1301 sysctl_unregister_oid(&dev->oid[0]); 1302 sysctl_unregister_oid(&dev->oid[1]); 1303 sysctl_unregister_oid(&dev->oid[2]); 1304 } 1305 1306 #endif 1307 1308 /*======================================*/ 1309 /* 1310 * Access functions for device resources. 1311 */ 1312 1313 /* Supplied by config(8) in ioconf.c */ 1314 extern struct config_device config_devtab[]; 1315 extern int devtab_count; 1316 1317 /* Runtime version */ 1318 struct config_device *devtab = config_devtab; 1319 1320 static int 1321 resource_new_name(const char *name, int unit) 1322 { 1323 struct config_device *new; 1324 1325 new = malloc((devtab_count + 1) * sizeof(*new), M_TEMP, M_NOWAIT); 1326 if (new == NULL) 1327 return -1; 1328 if (devtab && devtab_count > 0) 1329 bcopy(devtab, new, devtab_count * sizeof(*new)); 1330 bzero(&new[devtab_count], sizeof(*new)); 1331 new[devtab_count].name = malloc(strlen(name) + 1, M_TEMP, M_NOWAIT); 1332 if (new[devtab_count].name == NULL) { 1333 free(new, M_TEMP); 1334 return -1; 1335 } 1336 strcpy(new[devtab_count].name, name); 1337 new[devtab_count].unit = unit; 1338 new[devtab_count].resource_count = 0; 1339 new[devtab_count].resources = NULL; 1340 devtab = new; 1341 return devtab_count++; 1342 } 1343 1344 static int 1345 resource_new_resname(int j, const char *resname, resource_type type) 1346 { 1347 struct config_resource *new; 1348 int i; 1349 1350 i = devtab[j].resource_count; 1351 new = malloc((i + 1) * sizeof(*new), M_TEMP, M_NOWAIT); 1352 if (new == NULL) 1353 return -1; 1354 if (devtab[j].resources && i > 0) 1355 bcopy(devtab[j].resources, new, i * sizeof(*new)); 1356 bzero(&new[i], sizeof(*new)); 1357 new[i].name = malloc(strlen(resname) + 1, M_TEMP, M_NOWAIT); 1358 if (new[i].name == NULL) { 1359 free(new, M_TEMP); 1360 return -1; 1361 } 1362 strcpy(new[i].name, resname); 1363 new[i].type = type; 1364 if (devtab[j].resources) 1365 free(devtab[j].resources, M_TEMP); 1366 devtab[j].resources = new; 1367 devtab[j].resource_count = i + 1; 1368 return i; 1369 } 1370 1371 static int 1372 resource_match_string(int i, const char *resname, const char *value) 1373 { 1374 int j; 1375 struct config_resource *res; 1376 1377 for (j = 0, res = devtab[i].resources; 1378 j < devtab[i].resource_count; j++, res++) 1379 if (!strcmp(res->name, resname) 1380 && res->type == RES_STRING 1381 && !strcmp(res->u.stringval, value)) 1382 return j; 1383 return -1; 1384 } 1385 1386 static int 1387 resource_find(const char *name, int unit, const char *resname, 1388 struct config_resource **result) 1389 { 1390 int i, j; 1391 struct config_resource *res; 1392 1393 /* 1394 * First check specific instances, then generic. 1395 */ 1396 for (i = 0; i < devtab_count; i++) { 1397 if (devtab[i].unit < 0) 1398 continue; 1399 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1400 res = devtab[i].resources; 1401 for (j = 0; j < devtab[i].resource_count; j++, res++) 1402 if (!strcmp(res->name, resname)) { 1403 *result = res; 1404 return 0; 1405 } 1406 } 1407 } 1408 for (i = 0; i < devtab_count; i++) { 1409 if (devtab[i].unit >= 0) 1410 continue; 1411 /* XXX should this `&& devtab[i].unit == unit' be here? */ 1412 /* XXX if so, then the generic match does nothing */ 1413 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1414 res = devtab[i].resources; 1415 for (j = 0; j < devtab[i].resource_count; j++, res++) 1416 if (!strcmp(res->name, resname)) { 1417 *result = res; 1418 return 0; 1419 } 1420 } 1421 } 1422 return ENOENT; 1423 } 1424 1425 int 1426 resource_int_value(const char *name, int unit, const char *resname, int *result) 1427 { 1428 int error; 1429 struct config_resource *res; 1430 1431 if ((error = resource_find(name, unit, resname, &res)) != 0) 1432 return error; 1433 if (res->type != RES_INT) 1434 return EFTYPE; 1435 *result = res->u.intval; 1436 return 0; 1437 } 1438 1439 int 1440 resource_long_value(const char *name, int unit, const char *resname, 1441 long *result) 1442 { 1443 int error; 1444 struct config_resource *res; 1445 1446 if ((error = resource_find(name, unit, resname, &res)) != 0) 1447 return error; 1448 if (res->type != RES_LONG) 1449 return EFTYPE; 1450 *result = res->u.longval; 1451 return 0; 1452 } 1453 1454 int 1455 resource_string_value(const char *name, int unit, const char *resname, 1456 char **result) 1457 { 1458 int error; 1459 struct config_resource *res; 1460 1461 if ((error = resource_find(name, unit, resname, &res)) != 0) 1462 return error; 1463 if (res->type != RES_STRING) 1464 return EFTYPE; 1465 *result = res->u.stringval; 1466 return 0; 1467 } 1468 1469 int 1470 resource_query_string(int i, const char *resname, const char *value) 1471 { 1472 if (i < 0) 1473 i = 0; 1474 else 1475 i = i + 1; 1476 for (; i < devtab_count; i++) 1477 if (resource_match_string(i, resname, value) >= 0) 1478 return i; 1479 return -1; 1480 } 1481 1482 int 1483 resource_locate(int i, const char *resname) 1484 { 1485 if (i < 0) 1486 i = 0; 1487 else 1488 i = i + 1; 1489 for (; i < devtab_count; i++) 1490 if (!strcmp(devtab[i].name, resname)) 1491 return i; 1492 return -1; 1493 } 1494 1495 int 1496 resource_count(void) 1497 { 1498 return devtab_count; 1499 } 1500 1501 char * 1502 resource_query_name(int i) 1503 { 1504 return devtab[i].name; 1505 } 1506 1507 int 1508 resource_query_unit(int i) 1509 { 1510 return devtab[i].unit; 1511 } 1512 1513 static int 1514 resource_create(const char *name, int unit, const char *resname, 1515 resource_type type, struct config_resource **result) 1516 { 1517 int i, j; 1518 struct config_resource *res = NULL; 1519 1520 for (i = 0; i < devtab_count; i++) { 1521 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1522 res = devtab[i].resources; 1523 break; 1524 } 1525 } 1526 if (res == NULL) { 1527 i = resource_new_name(name, unit); 1528 if (i < 0) 1529 return ENOMEM; 1530 res = devtab[i].resources; 1531 } 1532 for (j = 0; j < devtab[i].resource_count; j++, res++) { 1533 if (!strcmp(res->name, resname)) { 1534 *result = res; 1535 return 0; 1536 } 1537 } 1538 j = resource_new_resname(i, resname, type); 1539 if (j < 0) 1540 return ENOMEM; 1541 res = &devtab[i].resources[j]; 1542 *result = res; 1543 return 0; 1544 } 1545 1546 int 1547 resource_set_int(const char *name, int unit, const char *resname, int value) 1548 { 1549 int error; 1550 struct config_resource *res; 1551 1552 error = resource_create(name, unit, resname, RES_INT, &res); 1553 if (error) 1554 return error; 1555 if (res->type != RES_INT) 1556 return EFTYPE; 1557 res->u.intval = value; 1558 return 0; 1559 } 1560 1561 int 1562 resource_set_long(const char *name, int unit, const char *resname, long value) 1563 { 1564 int error; 1565 struct config_resource *res; 1566 1567 error = resource_create(name, unit, resname, RES_LONG, &res); 1568 if (error) 1569 return error; 1570 if (res->type != RES_LONG) 1571 return EFTYPE; 1572 res->u.longval = value; 1573 return 0; 1574 } 1575 1576 int 1577 resource_set_string(const char *name, int unit, const char *resname, 1578 const char *value) 1579 { 1580 int error; 1581 struct config_resource *res; 1582 1583 error = resource_create(name, unit, resname, RES_STRING, &res); 1584 if (error) 1585 return error; 1586 if (res->type != RES_STRING) 1587 return EFTYPE; 1588 if (res->u.stringval) 1589 free(res->u.stringval, M_TEMP); 1590 res->u.stringval = malloc(strlen(value) + 1, M_TEMP, M_NOWAIT); 1591 if (res->u.stringval == NULL) 1592 return ENOMEM; 1593 strcpy(res->u.stringval, value); 1594 return 0; 1595 } 1596 1597 1598 static void 1599 resource_cfgload(void *dummy __unused) 1600 { 1601 struct config_resource *res, *cfgres; 1602 int i, j; 1603 int error; 1604 char *name, *resname; 1605 int unit; 1606 resource_type type; 1607 char *stringval; 1608 int config_devtab_count; 1609 1610 config_devtab_count = devtab_count; 1611 devtab = NULL; 1612 devtab_count = 0; 1613 1614 for (i = 0; i < config_devtab_count; i++) { 1615 name = config_devtab[i].name; 1616 unit = config_devtab[i].unit; 1617 1618 for (j = 0; j < config_devtab[i].resource_count; j++) { 1619 cfgres = config_devtab[i].resources; 1620 resname = cfgres[j].name; 1621 type = cfgres[j].type; 1622 error = resource_create(name, unit, resname, type, 1623 &res); 1624 if (error) { 1625 printf("create resource %s%d: error %d\n", 1626 name, unit, error); 1627 continue; 1628 } 1629 if (res->type != type) { 1630 printf("type mismatch %s%d: %d != %d\n", 1631 name, unit, res->type, type); 1632 continue; 1633 } 1634 switch (type) { 1635 case RES_INT: 1636 res->u.intval = cfgres[j].u.intval; 1637 break; 1638 case RES_LONG: 1639 res->u.longval = cfgres[j].u.longval; 1640 break; 1641 case RES_STRING: 1642 if (res->u.stringval) 1643 free(res->u.stringval, M_TEMP); 1644 stringval = cfgres[j].u.stringval; 1645 res->u.stringval = malloc(strlen(stringval) + 1, 1646 M_TEMP, M_NOWAIT); 1647 if (res->u.stringval == NULL) 1648 break; 1649 strcpy(res->u.stringval, stringval); 1650 break; 1651 default: 1652 panic("unknown resource type %d\n", type); 1653 } 1654 } 1655 } 1656 } 1657 SYSINIT(cfgload, SI_SUB_KMEM, SI_ORDER_ANY + 50, resource_cfgload, 0) 1658 1659 1660 /*======================================*/ 1661 /* 1662 * Some useful method implementations to make life easier for bus drivers. 1663 */ 1664 1665 void 1666 resource_list_init(struct resource_list *rl) 1667 { 1668 SLIST_INIT(rl); 1669 } 1670 1671 void 1672 resource_list_free(struct resource_list *rl) 1673 { 1674 struct resource_list_entry *rle; 1675 1676 while ((rle = SLIST_FIRST(rl)) != NULL) { 1677 if (rle->res) 1678 panic("resource_list_free: resource entry is busy"); 1679 SLIST_REMOVE_HEAD(rl, link); 1680 free(rle, M_BUS); 1681 } 1682 } 1683 1684 void 1685 resource_list_add(struct resource_list *rl, 1686 int type, int rid, 1687 u_long start, u_long end, u_long count) 1688 { 1689 struct resource_list_entry *rle; 1690 1691 rle = resource_list_find(rl, type, rid); 1692 if (!rle) { 1693 rle = malloc(sizeof(struct resource_list_entry), M_BUS, M_NOWAIT); 1694 if (!rle) 1695 panic("resource_list_add: can't record entry"); 1696 SLIST_INSERT_HEAD(rl, rle, link); 1697 rle->type = type; 1698 rle->rid = rid; 1699 rle->res = NULL; 1700 } 1701 1702 if (rle->res) 1703 panic("resource_list_add: resource entry is busy"); 1704 1705 rle->start = start; 1706 rle->end = end; 1707 rle->count = count; 1708 } 1709 1710 struct resource_list_entry* 1711 resource_list_find(struct resource_list *rl, 1712 int type, int rid) 1713 { 1714 struct resource_list_entry *rle; 1715 1716 SLIST_FOREACH(rle, rl, link) 1717 if (rle->type == type && rle->rid == rid) 1718 return rle; 1719 return NULL; 1720 } 1721 1722 void 1723 resource_list_delete(struct resource_list *rl, 1724 int type, int rid) 1725 { 1726 struct resource_list_entry *rle = resource_list_find(rl, type, rid); 1727 1728 if (rle) { 1729 SLIST_REMOVE(rl, rle, resource_list_entry, link); 1730 free(rle, M_BUS); 1731 } 1732 } 1733 1734 struct resource * 1735 resource_list_alloc(struct resource_list *rl, 1736 device_t bus, device_t child, 1737 int type, int *rid, 1738 u_long start, u_long end, 1739 u_long count, u_int flags) 1740 { 1741 struct resource_list_entry *rle = 0; 1742 int passthrough = (device_get_parent(child) != bus); 1743 int isdefault = (start == 0UL && end == ~0UL); 1744 1745 if (passthrough) { 1746 return BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1747 type, rid, 1748 start, end, count, flags); 1749 } 1750 1751 rle = resource_list_find(rl, type, *rid); 1752 1753 if (!rle) 1754 return 0; /* no resource of that type/rid */ 1755 if (rle->res) 1756 panic("resource_list_alloc: resource entry is busy"); 1757 1758 if (isdefault) { 1759 start = rle->start; 1760 count = max(count, rle->count); 1761 end = max(rle->end, start + count - 1); 1762 } 1763 1764 rle->res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1765 type, rid, start, end, count, flags); 1766 1767 /* 1768 * Record the new range. 1769 */ 1770 if (rle->res) { 1771 rle->start = rman_get_start(rle->res); 1772 rle->end = rman_get_end(rle->res); 1773 rle->count = count; 1774 } 1775 1776 return rle->res; 1777 } 1778 1779 int 1780 resource_list_release(struct resource_list *rl, 1781 device_t bus, device_t child, 1782 int type, int rid, struct resource *res) 1783 { 1784 struct resource_list_entry *rle = 0; 1785 int passthrough = (device_get_parent(child) != bus); 1786 int error; 1787 1788 if (passthrough) { 1789 return BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1790 type, rid, res); 1791 } 1792 1793 rle = resource_list_find(rl, type, rid); 1794 1795 if (!rle) 1796 panic("resource_list_release: can't find resource"); 1797 if (!rle->res) 1798 panic("resource_list_release: resource entry is not busy"); 1799 1800 error = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1801 type, rid, res); 1802 if (error) 1803 return error; 1804 1805 rle->res = NULL; 1806 return 0; 1807 } 1808 1809 /* 1810 * Call DEVICE_IDENTIFY for each driver. 1811 */ 1812 int 1813 bus_generic_probe(device_t dev) 1814 { 1815 devclass_t dc = dev->devclass; 1816 driverlink_t dl; 1817 1818 for (dl = TAILQ_FIRST(&dc->drivers); dl; dl = TAILQ_NEXT(dl, link)) 1819 DEVICE_IDENTIFY(dl->driver, dev); 1820 1821 return 0; 1822 } 1823 1824 int 1825 bus_generic_attach(device_t dev) 1826 { 1827 device_t child; 1828 1829 for (child = TAILQ_FIRST(&dev->children); 1830 child; child = TAILQ_NEXT(child, link)) 1831 device_probe_and_attach(child); 1832 1833 return 0; 1834 } 1835 1836 int 1837 bus_generic_detach(device_t dev) 1838 { 1839 device_t child; 1840 int error; 1841 1842 if (dev->state != DS_ATTACHED) 1843 return EBUSY; 1844 1845 for (child = TAILQ_FIRST(&dev->children); 1846 child; child = TAILQ_NEXT(child, link)) 1847 if ((error = device_detach(child)) != 0) 1848 return error; 1849 1850 return 0; 1851 } 1852 1853 int 1854 bus_generic_shutdown(device_t dev) 1855 { 1856 device_t child; 1857 1858 for (child = TAILQ_FIRST(&dev->children); 1859 child; child = TAILQ_NEXT(child, link)) 1860 device_shutdown(child); 1861 1862 return 0; 1863 } 1864 1865 int 1866 bus_generic_suspend(device_t dev) 1867 { 1868 int error; 1869 device_t child, child2; 1870 1871 for (child = TAILQ_FIRST(&dev->children); 1872 child; child = TAILQ_NEXT(child, link)) { 1873 error = DEVICE_SUSPEND(child); 1874 if (error) { 1875 for (child2 = TAILQ_FIRST(&dev->children); 1876 child2 && child2 != child; 1877 child2 = TAILQ_NEXT(child2, link)) 1878 DEVICE_RESUME(child2); 1879 return (error); 1880 } 1881 } 1882 return 0; 1883 } 1884 1885 int 1886 bus_generic_resume(device_t dev) 1887 { 1888 device_t child; 1889 1890 for (child = TAILQ_FIRST(&dev->children); 1891 child; child = TAILQ_NEXT(child, link)) { 1892 DEVICE_RESUME(child); 1893 /* if resume fails, there's nothing we can usefully do... */ 1894 } 1895 return 0; 1896 } 1897 1898 int 1899 bus_print_child_header (device_t dev, device_t child) 1900 { 1901 int retval = 0; 1902 1903 if (device_get_desc(child)) { 1904 retval += device_printf(child, "<%s>", 1905 device_get_desc(child)); 1906 } else { 1907 retval += printf("%s", device_get_nameunit(child)); 1908 } 1909 1910 return (retval); 1911 } 1912 1913 int 1914 bus_print_child_footer (device_t dev, device_t child) 1915 { 1916 return(printf(" on %s\n", device_get_nameunit(dev))); 1917 } 1918 1919 int 1920 bus_generic_print_child(device_t dev, device_t child) 1921 { 1922 int retval = 0; 1923 1924 retval += bus_print_child_header(dev, child); 1925 retval += bus_print_child_footer(dev, child); 1926 1927 return (retval); 1928 } 1929 1930 int 1931 bus_generic_read_ivar(device_t dev, device_t child, int index, 1932 uintptr_t * result) 1933 { 1934 return ENOENT; 1935 } 1936 1937 int 1938 bus_generic_write_ivar(device_t dev, device_t child, int index, 1939 uintptr_t value) 1940 { 1941 return ENOENT; 1942 } 1943 1944 void 1945 bus_generic_driver_added(device_t dev, driver_t *driver) 1946 { 1947 device_t child; 1948 1949 DEVICE_IDENTIFY(driver, dev); 1950 for (child = TAILQ_FIRST(&dev->children); 1951 child; child = TAILQ_NEXT(child, link)) 1952 if (child->state == DS_NOTPRESENT) 1953 device_probe_and_attach(child); 1954 } 1955 1956 int 1957 bus_generic_setup_intr(device_t dev, device_t child, struct resource *irq, 1958 int flags, driver_intr_t *intr, void *arg, 1959 void **cookiep) 1960 { 1961 /* Propagate up the bus hierarchy until someone handles it. */ 1962 if (dev->parent) 1963 return (BUS_SETUP_INTR(dev->parent, child, irq, flags, 1964 intr, arg, cookiep)); 1965 else 1966 return (EINVAL); 1967 } 1968 1969 int 1970 bus_generic_teardown_intr(device_t dev, device_t child, struct resource *irq, 1971 void *cookie) 1972 { 1973 /* Propagate up the bus hierarchy until someone handles it. */ 1974 if (dev->parent) 1975 return (BUS_TEARDOWN_INTR(dev->parent, child, irq, cookie)); 1976 else 1977 return (EINVAL); 1978 } 1979 1980 struct resource * 1981 bus_generic_alloc_resource(device_t dev, device_t child, int type, int *rid, 1982 u_long start, u_long end, u_long count, u_int flags) 1983 { 1984 /* Propagate up the bus hierarchy until someone handles it. */ 1985 if (dev->parent) 1986 return (BUS_ALLOC_RESOURCE(dev->parent, child, type, rid, 1987 start, end, count, flags)); 1988 else 1989 return (NULL); 1990 } 1991 1992 int 1993 bus_generic_release_resource(device_t dev, device_t child, int type, int rid, 1994 struct resource *r) 1995 { 1996 /* Propagate up the bus hierarchy until someone handles it. */ 1997 if (dev->parent) 1998 return (BUS_RELEASE_RESOURCE(dev->parent, child, type, rid, 1999 r)); 2000 else 2001 return (EINVAL); 2002 } 2003 2004 int 2005 bus_generic_activate_resource(device_t dev, device_t child, int type, int rid, 2006 struct resource *r) 2007 { 2008 /* Propagate up the bus hierarchy until someone handles it. */ 2009 if (dev->parent) 2010 return (BUS_ACTIVATE_RESOURCE(dev->parent, child, type, rid, 2011 r)); 2012 else 2013 return (EINVAL); 2014 } 2015 2016 int 2017 bus_generic_deactivate_resource(device_t dev, device_t child, int type, 2018 int rid, struct resource *r) 2019 { 2020 /* Propagate up the bus hierarchy until someone handles it. */ 2021 if (dev->parent) 2022 return (BUS_DEACTIVATE_RESOURCE(dev->parent, child, type, rid, 2023 r)); 2024 else 2025 return (EINVAL); 2026 } 2027 2028 /* 2029 * Some convenience functions to make it easier for drivers to use the 2030 * resource-management functions. All these really do is hide the 2031 * indirection through the parent's method table, making for slightly 2032 * less-wordy code. In the future, it might make sense for this code 2033 * to maintain some sort of a list of resources allocated by each device. 2034 */ 2035 struct resource * 2036 bus_alloc_resource(device_t dev, int type, int *rid, u_long start, u_long end, 2037 u_long count, u_int flags) 2038 { 2039 if (dev->parent == 0) 2040 return (0); 2041 return (BUS_ALLOC_RESOURCE(dev->parent, dev, type, rid, start, end, 2042 count, flags)); 2043 } 2044 2045 int 2046 bus_activate_resource(device_t dev, int type, int rid, struct resource *r) 2047 { 2048 if (dev->parent == 0) 2049 return (EINVAL); 2050 return (BUS_ACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 2051 } 2052 2053 int 2054 bus_deactivate_resource(device_t dev, int type, int rid, struct resource *r) 2055 { 2056 if (dev->parent == 0) 2057 return (EINVAL); 2058 return (BUS_DEACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 2059 } 2060 2061 int 2062 bus_release_resource(device_t dev, int type, int rid, struct resource *r) 2063 { 2064 if (dev->parent == 0) 2065 return (EINVAL); 2066 return (BUS_RELEASE_RESOURCE(dev->parent, dev, 2067 type, rid, r)); 2068 } 2069 2070 int 2071 bus_setup_intr(device_t dev, struct resource *r, int flags, 2072 driver_intr_t handler, void *arg, void **cookiep) 2073 { 2074 if (dev->parent == 0) 2075 return (EINVAL); 2076 return (BUS_SETUP_INTR(dev->parent, dev, r, flags, 2077 handler, arg, cookiep)); 2078 } 2079 2080 int 2081 bus_teardown_intr(device_t dev, struct resource *r, void *cookie) 2082 { 2083 if (dev->parent == 0) 2084 return (EINVAL); 2085 return (BUS_TEARDOWN_INTR(dev->parent, dev, r, cookie)); 2086 } 2087 2088 int 2089 bus_set_resource(device_t dev, int type, int rid, 2090 u_long start, u_long count) 2091 { 2092 return BUS_SET_RESOURCE(device_get_parent(dev), dev, type, rid, 2093 start, count); 2094 } 2095 2096 int 2097 bus_get_resource(device_t dev, int type, int rid, 2098 u_long *startp, u_long *countp) 2099 { 2100 return BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2101 startp, countp); 2102 } 2103 2104 u_long 2105 bus_get_resource_start(device_t dev, int type, int rid) 2106 { 2107 u_long start, count; 2108 int error; 2109 2110 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2111 &start, &count); 2112 if (error) 2113 return 0; 2114 return start; 2115 } 2116 2117 u_long 2118 bus_get_resource_count(device_t dev, int type, int rid) 2119 { 2120 u_long start, count; 2121 int error; 2122 2123 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2124 &start, &count); 2125 if (error) 2126 return 0; 2127 return count; 2128 } 2129 2130 void 2131 bus_delete_resource(device_t dev, int type, int rid) 2132 { 2133 BUS_DELETE_RESOURCE(device_get_parent(dev), dev, type, rid); 2134 } 2135 2136 static int 2137 root_print_child(device_t dev, device_t child) 2138 { 2139 return (0); 2140 } 2141 2142 static int 2143 root_setup_intr(device_t dev, device_t child, driver_intr_t *intr, void *arg, 2144 void **cookiep) 2145 { 2146 /* 2147 * If an interrupt mapping gets to here something bad has happened. 2148 */ 2149 panic("root_setup_intr"); 2150 } 2151 2152 static device_method_t root_methods[] = { 2153 /* Device interface */ 2154 DEVMETHOD(device_shutdown, bus_generic_shutdown), 2155 DEVMETHOD(device_suspend, bus_generic_suspend), 2156 DEVMETHOD(device_resume, bus_generic_resume), 2157 2158 /* Bus interface */ 2159 DEVMETHOD(bus_print_child, root_print_child), 2160 DEVMETHOD(bus_read_ivar, bus_generic_read_ivar), 2161 DEVMETHOD(bus_write_ivar, bus_generic_write_ivar), 2162 DEVMETHOD(bus_setup_intr, root_setup_intr), 2163 2164 { 0, 0 } 2165 }; 2166 2167 static driver_t root_driver = { 2168 "root", 2169 root_methods, 2170 1, /* no softc */ 2171 }; 2172 2173 device_t root_bus; 2174 devclass_t root_devclass; 2175 2176 static int 2177 root_bus_module_handler(module_t mod, int what, void* arg) 2178 { 2179 switch (what) { 2180 case MOD_LOAD: 2181 compile_methods(&root_driver); 2182 root_bus = make_device(NULL, "root", 0); 2183 root_bus->desc = "System root bus"; 2184 root_bus->ops = root_driver.ops; 2185 root_bus->driver = &root_driver; 2186 root_bus->state = DS_ATTACHED; 2187 root_devclass = devclass_find_internal("root", FALSE); 2188 return 0; 2189 2190 case MOD_SHUTDOWN: 2191 device_shutdown(root_bus); 2192 return 0; 2193 } 2194 2195 return 0; 2196 } 2197 2198 static moduledata_t root_bus_mod = { 2199 "rootbus", 2200 root_bus_module_handler, 2201 0 2202 }; 2203 DECLARE_MODULE(rootbus, root_bus_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 2204 2205 void 2206 root_bus_configure(void) 2207 { 2208 device_t dev; 2209 2210 PDEBUG((".")); 2211 2212 for (dev = TAILQ_FIRST(&root_bus->children); dev; 2213 dev = TAILQ_NEXT(dev, link)) { 2214 device_probe_and_attach(dev); 2215 } 2216 } 2217 2218 int 2219 driver_module_handler(module_t mod, int what, void *arg) 2220 { 2221 int error, i; 2222 struct driver_module_data *dmd; 2223 devclass_t bus_devclass; 2224 2225 dmd = (struct driver_module_data *)arg; 2226 bus_devclass = devclass_find_internal(dmd->dmd_busname, TRUE); 2227 error = 0; 2228 2229 switch (what) { 2230 case MOD_LOAD: 2231 if (dmd->dmd_chainevh) 2232 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2233 2234 for (i = 0; !error && i < dmd->dmd_ndrivers; i++) { 2235 PDEBUG(("Loading module: driver %s on bus %s", 2236 DRIVERNAME(dmd->dmd_drivers[i]), 2237 dmd->dmd_busname)); 2238 error = devclass_add_driver(bus_devclass, 2239 dmd->dmd_drivers[i]); 2240 } 2241 if (error) 2242 break; 2243 2244 /* 2245 * The drivers loaded in this way are assumed to all 2246 * implement the same devclass. 2247 */ 2248 *dmd->dmd_devclass = 2249 devclass_find_internal(dmd->dmd_drivers[0]->name, 2250 TRUE); 2251 break; 2252 2253 case MOD_UNLOAD: 2254 for (i = 0; !error && i < dmd->dmd_ndrivers; i++) { 2255 PDEBUG(("Unloading module: driver %s from bus %s", 2256 DRIVERNAME(dmd->dmd_drivers[i]), 2257 dmd->dmd_busname)); 2258 error = devclass_delete_driver(bus_devclass, 2259 dmd->dmd_drivers[i]); 2260 } 2261 2262 if (!error && dmd->dmd_chainevh) 2263 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2264 break; 2265 } 2266 2267 return (error); 2268 } 2269 2270 #ifdef BUS_DEBUG 2271 2272 /* the _short versions avoid iteration by not calling anything that prints 2273 * more than oneliners. I love oneliners. 2274 */ 2275 2276 static void 2277 print_method_list(device_method_t *m, int indent) 2278 { 2279 int i; 2280 2281 if (!m) 2282 return; 2283 2284 for (i = 0; m->desc; i++, m++) 2285 indentprintf(("method %d: %s, offset=%d\n", 2286 i, m->desc->name, m->desc->offset)); 2287 } 2288 2289 static void 2290 print_device_ops(device_ops_t ops, int indent) 2291 { 2292 int i; 2293 int count = 0; 2294 2295 if (!ops) 2296 return; 2297 2298 /* we present a list of the methods that are pointing to the 2299 * error_method, but ignore the 0'th elements; it is always 2300 * error_method. 2301 */ 2302 for (i = 1; i < ops->maxoffset; i++) { 2303 if (ops->methods[i] == error_method) { 2304 if (count == 0) 2305 indentprintf(("error_method:")); 2306 printf(" %d", i); 2307 count++; 2308 } 2309 } 2310 if (count) 2311 printf("\n"); 2312 2313 indentprintf(("(%d method%s, %d valid, %d error_method%s)\n", 2314 ops->maxoffset-1, (ops->maxoffset-1 == 1? "":"s"), 2315 ops->maxoffset-1-count, 2316 count, (count == 1? "":"'s"))); 2317 } 2318 2319 static void 2320 print_device_short(device_t dev, int indent) 2321 { 2322 if (!dev) 2323 return; 2324 2325 indentprintf(("device %d: <%s> %sparent,%schildren,%s%s%s%s,%sivars,%ssoftc,busy=%d\n", 2326 dev->unit, dev->desc, 2327 (dev->parent? "":"no "), 2328 (TAILQ_EMPTY(&dev->children)? "no ":""), 2329 (dev->flags&DF_ENABLED? "enabled,":"disabled,"), 2330 (dev->flags&DF_FIXEDCLASS? "fixed,":""), 2331 (dev->flags&DF_WILDCARD? "wildcard,":""), 2332 (dev->flags&DF_DESCMALLOCED? "descmalloced,":""), 2333 (dev->ivars? "":"no "), 2334 (dev->softc? "":"no "), 2335 dev->busy)); 2336 } 2337 2338 static void 2339 print_device(device_t dev, int indent) 2340 { 2341 if (!dev) 2342 return; 2343 2344 print_device_short(dev, indent); 2345 2346 indentprintf(("Parent:\n")); 2347 print_device_short(dev->parent, indent+1); 2348 indentprintf(("Methods:\n")); 2349 print_device_ops(dev->ops, indent+1); 2350 indentprintf(("Driver:\n")); 2351 print_driver_short(dev->driver, indent+1); 2352 indentprintf(("Devclass:\n")); 2353 print_devclass_short(dev->devclass, indent+1); 2354 } 2355 2356 void 2357 print_device_tree_short(device_t dev, int indent) 2358 /* print the device and all its children (indented) */ 2359 { 2360 device_t child; 2361 2362 if (!dev) 2363 return; 2364 2365 print_device_short(dev, indent); 2366 2367 for (child = TAILQ_FIRST(&dev->children); child; 2368 child = TAILQ_NEXT(child, link)) 2369 print_device_tree_short(child, indent+1); 2370 } 2371 2372 void 2373 print_device_tree(device_t dev, int indent) 2374 /* print the device and all its children (indented) */ 2375 { 2376 device_t child; 2377 2378 if (!dev) 2379 return; 2380 2381 print_device(dev, indent); 2382 2383 for (child = TAILQ_FIRST(&dev->children); child; 2384 child = TAILQ_NEXT(child, link)) 2385 print_device_tree(child, indent+1); 2386 } 2387 2388 static void 2389 print_driver_short(driver_t *driver, int indent) 2390 { 2391 if (!driver) 2392 return; 2393 2394 indentprintf(("driver %s: softc size = %d\n", 2395 driver->name, driver->softc)); 2396 } 2397 2398 static void 2399 print_driver(driver_t *driver, int indent) 2400 { 2401 if (!driver) 2402 return; 2403 2404 print_driver_short(driver, indent); 2405 indentprintf(("Methods:\n")); 2406 print_method_list(driver->methods, indent+1); 2407 indentprintf(("Operations:\n")); 2408 print_device_ops(driver->ops, indent+1); 2409 } 2410 2411 2412 static void 2413 print_driver_list(driver_list_t drivers, int indent) 2414 { 2415 driverlink_t driver; 2416 2417 for (driver = TAILQ_FIRST(&drivers); driver; 2418 driver = TAILQ_NEXT(driver, link)) 2419 print_driver(driver->driver, indent); 2420 } 2421 2422 static void 2423 print_devclass_short(devclass_t dc, int indent) 2424 { 2425 if ( !dc ) 2426 return; 2427 2428 indentprintf(("devclass %s: max units = %d, next unit = %d\n", 2429 dc->name, dc->maxunit, dc->nextunit)); 2430 } 2431 2432 static void 2433 print_devclass(devclass_t dc, int indent) 2434 { 2435 int i; 2436 2437 if ( !dc ) 2438 return; 2439 2440 print_devclass_short(dc, indent); 2441 indentprintf(("Drivers:\n")); 2442 print_driver_list(dc->drivers, indent+1); 2443 2444 indentprintf(("Devices:\n")); 2445 for (i = 0; i < dc->maxunit; i++) 2446 if (dc->devices[i]) 2447 print_device(dc->devices[i], indent+1); 2448 } 2449 2450 void 2451 print_devclass_list_short(void) 2452 { 2453 devclass_t dc; 2454 2455 printf("Short listing of devclasses, drivers & devices:\n"); 2456 for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) 2457 print_devclass_short(dc, 0); 2458 } 2459 2460 void 2461 print_devclass_list(void) 2462 { 2463 devclass_t dc; 2464 2465 printf("Full listing of devclasses, drivers & devices:\n"); 2466 for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) 2467 print_devclass(dc, 0); 2468 } 2469 2470 #endif 2471