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 if (bootverbose) 494 printf("devclass_alloc_unit: %s%d already exists, using next available unit number\n", dc->name, unit); 495 unit = -1; 496 } 497 } 498 499 if (unit == -1) { 500 unit = dc->nextunit; 501 dc->nextunit++; 502 } else if (dc->nextunit <= unit) 503 dc->nextunit = unit + 1; 504 505 if (unit >= dc->maxunit) { 506 device_t *newlist; 507 int newsize; 508 509 newsize = (dc->maxunit ? 2 * dc->maxunit 510 : MINALLOCSIZE / sizeof(device_t)); 511 newlist = malloc(sizeof(device_t) * newsize, M_BUS, M_NOWAIT); 512 if (!newlist) 513 return ENOMEM; 514 bcopy(dc->devices, newlist, sizeof(device_t) * dc->maxunit); 515 bzero(newlist + dc->maxunit, 516 sizeof(device_t) * (newsize - dc->maxunit)); 517 if (dc->devices) 518 free(dc->devices, M_BUS); 519 dc->devices = newlist; 520 dc->maxunit = newsize; 521 } 522 PDEBUG(("now: unit %d in devclass %s", unit, DEVCLANAME(dc))); 523 524 *unitp = unit; 525 return 0; 526 } 527 528 static int 529 devclass_add_device(devclass_t dc, device_t dev) 530 { 531 int buflen, error; 532 533 PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); 534 535 buflen = strlen(dc->name) + 5; 536 dev->nameunit = malloc(buflen, M_BUS, M_NOWAIT); 537 if (!dev->nameunit) 538 return ENOMEM; 539 bzero(dev->nameunit, buflen); 540 541 if ((error = devclass_alloc_unit(dc, &dev->unit)) != 0) { 542 free(dev->nameunit, M_BUS); 543 dev->nameunit = NULL; 544 return error; 545 } 546 dc->devices[dev->unit] = dev; 547 dev->devclass = dc; 548 snprintf(dev->nameunit, buflen, "%s%d", dc->name, dev->unit); 549 550 #ifdef DEVICE_SYSCTLS 551 device_register_oids(dev); 552 #endif 553 554 return 0; 555 } 556 557 static int 558 devclass_delete_device(devclass_t dc, device_t dev) 559 { 560 if (!dc || !dev) 561 return 0; 562 563 PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); 564 565 if (dev->devclass != dc 566 || dc->devices[dev->unit] != dev) 567 panic("devclass_delete_device: inconsistent device class"); 568 dc->devices[dev->unit] = NULL; 569 if (dev->flags & DF_WILDCARD) 570 dev->unit = -1; 571 dev->devclass = NULL; 572 free(dev->nameunit, M_BUS); 573 dev->nameunit = NULL; 574 while (dc->nextunit > 0 && dc->devices[dc->nextunit - 1] == NULL) 575 dc->nextunit--; 576 577 #ifdef DEVICE_SYSCTLS 578 device_unregister_oids(dev); 579 #endif 580 581 return 0; 582 } 583 584 static device_t 585 make_device(device_t parent, const char *name, int unit) 586 { 587 device_t dev; 588 devclass_t dc; 589 590 PDEBUG(("%s at %s as unit %d", name, DEVICENAME(parent), unit)); 591 592 if (name) { 593 dc = devclass_find_internal(name, TRUE); 594 if (!dc) { 595 printf("make_device: can't find device class %s\n", name); 596 return NULL; 597 } 598 } else 599 dc = NULL; 600 601 dev = malloc(sizeof(struct device), M_BUS, M_NOWAIT); 602 if (!dev) 603 return 0; 604 bzero(dev, sizeof(struct device)); 605 606 dev->parent = parent; 607 TAILQ_INIT(&dev->children); 608 dev->ops = &null_ops; 609 dev->driver = NULL; 610 dev->devclass = NULL; 611 dev->unit = unit; 612 dev->nameunit = NULL; 613 dev->desc = NULL; 614 dev->busy = 0; 615 dev->devflags = 0; 616 dev->flags = DF_ENABLED; 617 dev->order = 0; 618 if (unit == -1) 619 dev->flags |= DF_WILDCARD; 620 if (name) { 621 dev->flags |= DF_FIXEDCLASS; 622 devclass_add_device(dc, dev); 623 } 624 dev->ivars = NULL; 625 dev->softc = NULL; 626 627 dev->state = DS_NOTPRESENT; 628 629 return dev; 630 } 631 632 static int 633 device_print_child(device_t dev, device_t child) 634 { 635 int retval = 0; 636 637 if (device_is_alive(child)) { 638 retval += BUS_PRINT_CHILD(dev, child); 639 } else 640 retval += device_printf(child, " not found\n"); 641 642 return (retval); 643 } 644 645 device_t 646 device_add_child(device_t dev, const char *name, int unit) 647 { 648 return device_add_child_ordered(dev, 0, name, unit); 649 } 650 651 device_t 652 device_add_child_ordered(device_t dev, int order, const char *name, int unit) 653 { 654 device_t child; 655 device_t place; 656 657 PDEBUG(("%s at %s with order %d as unit %d", 658 name, DEVICENAME(dev), order, unit)); 659 660 child = make_device(dev, name, unit); 661 if (child == NULL) 662 return child; 663 child->order = order; 664 665 TAILQ_FOREACH(place, &dev->children, link) 666 if (place->order > order) 667 break; 668 669 if (place) { 670 /* 671 * The device 'place' is the first device whose order is 672 * greater than the new child. 673 */ 674 TAILQ_INSERT_BEFORE(place, child, link); 675 } else { 676 /* 677 * The new child's order is greater or equal to the order of 678 * any existing device. Add the child to the tail of the list. 679 */ 680 TAILQ_INSERT_TAIL(&dev->children, child, link); 681 } 682 683 return child; 684 } 685 686 int 687 device_delete_child(device_t dev, device_t child) 688 { 689 int error; 690 device_t grandchild; 691 692 PDEBUG(("%s from %s", DEVICENAME(child), DEVICENAME(dev))); 693 694 /* remove children first */ 695 while ( (grandchild = TAILQ_FIRST(&child->children)) ) { 696 error = device_delete_child(child, grandchild); 697 if (error) 698 return error; 699 } 700 701 if ((error = device_detach(child)) != 0) 702 return error; 703 if (child->devclass) 704 devclass_delete_device(child->devclass, child); 705 TAILQ_REMOVE(&dev->children, child, link); 706 device_set_desc(child, NULL); 707 free(child, M_BUS); 708 709 return 0; 710 } 711 712 /* 713 * Find only devices attached to this bus. 714 */ 715 device_t 716 device_find_child(device_t dev, const char *classname, int unit) 717 { 718 devclass_t dc; 719 device_t child; 720 721 dc = devclass_find(classname); 722 if (!dc) 723 return NULL; 724 725 child = devclass_get_device(dc, unit); 726 if (child && child->parent == dev) 727 return child; 728 return NULL; 729 } 730 731 static driverlink_t 732 first_matching_driver(devclass_t dc, device_t dev) 733 { 734 if (dev->devclass) 735 return devclass_find_driver_internal(dc, dev->devclass->name); 736 else 737 return TAILQ_FIRST(&dc->drivers); 738 } 739 740 static driverlink_t 741 next_matching_driver(devclass_t dc, device_t dev, driverlink_t last) 742 { 743 if (dev->devclass) { 744 driverlink_t dl; 745 for (dl = TAILQ_NEXT(last, link); dl; dl = TAILQ_NEXT(dl, link)) 746 if (!strcmp(dev->devclass->name, dl->driver->name)) 747 return dl; 748 return NULL; 749 } else 750 return TAILQ_NEXT(last, link); 751 } 752 753 static int 754 device_probe_child(device_t dev, device_t child) 755 { 756 devclass_t dc; 757 driverlink_t best = 0; 758 driverlink_t dl; 759 int result, pri = 0; 760 int hasclass = (child->devclass != 0); 761 762 dc = dev->devclass; 763 if (!dc) 764 panic("device_probe_child: parent device has no devclass"); 765 766 if (child->state == DS_ALIVE) 767 return 0; 768 769 for (dl = first_matching_driver(dc, child); 770 dl; 771 dl = next_matching_driver(dc, child, dl)) { 772 PDEBUG(("Trying %s", DRIVERNAME(dl->driver))); 773 device_set_driver(child, dl->driver); 774 if (!hasclass) 775 device_set_devclass(child, dl->driver->name); 776 result = DEVICE_PROBE(child); 777 if (!hasclass) 778 device_set_devclass(child, 0); 779 780 /* 781 * If the driver returns SUCCESS, there can be no higher match 782 * for this device. 783 */ 784 if (result == 0) { 785 best = dl; 786 pri = 0; 787 break; 788 } 789 790 /* 791 * The driver returned an error so it certainly doesn't match. 792 */ 793 if (result > 0) 794 continue; 795 796 /* 797 * A priority lower than SUCCESS, remember the best matching 798 * driver. Initialise the value of pri for the first match. 799 */ 800 if (best == 0 || result > pri) { 801 best = dl; 802 pri = result; 803 continue; 804 } 805 } 806 807 /* 808 * If we found a driver, change state and initialise the devclass. 809 */ 810 if (best) { 811 if (!child->devclass) 812 device_set_devclass(child, best->driver->name); 813 device_set_driver(child, best->driver); 814 if (pri < 0) { 815 /* 816 * A bit bogus. Call the probe method again to make sure 817 * that we have the right description. 818 */ 819 DEVICE_PROBE(child); 820 } 821 child->state = DS_ALIVE; 822 return 0; 823 } 824 825 return ENXIO; 826 } 827 828 device_t 829 device_get_parent(device_t dev) 830 { 831 return dev->parent; 832 } 833 834 int 835 device_get_children(device_t dev, device_t **devlistp, int *devcountp) 836 { 837 int count; 838 device_t child; 839 device_t *list; 840 841 count = 0; 842 for (child = TAILQ_FIRST(&dev->children); child; 843 child = TAILQ_NEXT(child, link)) 844 count++; 845 846 list = malloc(count * sizeof(device_t), M_TEMP, M_NOWAIT); 847 if (!list) 848 return ENOMEM; 849 bzero(list, count * sizeof(device_t)); 850 851 count = 0; 852 for (child = TAILQ_FIRST(&dev->children); child; 853 child = TAILQ_NEXT(child, link)) { 854 list[count] = child; 855 count++; 856 } 857 858 *devlistp = list; 859 *devcountp = count; 860 861 return 0; 862 } 863 864 driver_t * 865 device_get_driver(device_t dev) 866 { 867 return dev->driver; 868 } 869 870 devclass_t 871 device_get_devclass(device_t dev) 872 { 873 return dev->devclass; 874 } 875 876 const char * 877 device_get_name(device_t dev) 878 { 879 if (dev->devclass) 880 return devclass_get_name(dev->devclass); 881 return NULL; 882 } 883 884 const char * 885 device_get_nameunit(device_t dev) 886 { 887 return dev->nameunit; 888 } 889 890 int 891 device_get_unit(device_t dev) 892 { 893 return dev->unit; 894 } 895 896 const char * 897 device_get_desc(device_t dev) 898 { 899 return dev->desc; 900 } 901 902 u_int32_t 903 device_get_flags(device_t dev) 904 { 905 return dev->devflags; 906 } 907 908 int 909 device_print_prettyname(device_t dev) 910 { 911 const char *name = device_get_name(dev); 912 913 if (name == 0) 914 return printf("unknown: "); 915 else 916 return printf("%s%d: ", name, device_get_unit(dev)); 917 } 918 919 int 920 device_printf(device_t dev, const char * fmt, ...) 921 { 922 va_list ap; 923 int retval; 924 925 retval = device_print_prettyname(dev); 926 va_start(ap, fmt); 927 retval += vprintf(fmt, ap); 928 va_end(ap); 929 return retval; 930 } 931 932 static void 933 device_set_desc_internal(device_t dev, const char* desc, int copy) 934 { 935 if (dev->desc && (dev->flags & DF_DESCMALLOCED)) { 936 free(dev->desc, M_BUS); 937 dev->flags &= ~DF_DESCMALLOCED; 938 dev->desc = NULL; 939 } 940 941 if (copy && desc) { 942 dev->desc = malloc(strlen(desc) + 1, M_BUS, M_NOWAIT); 943 if (dev->desc) { 944 strcpy(dev->desc, desc); 945 dev->flags |= DF_DESCMALLOCED; 946 } 947 } else 948 /* Avoid a -Wcast-qual warning */ 949 dev->desc = (char *)(uintptr_t) desc; 950 951 #ifdef DEVICE_SYSCTLS 952 { 953 struct sysctl_oid *oid = &dev->oid[1]; 954 oid->oid_arg1 = dev->desc ? dev->desc : ""; 955 oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0; 956 } 957 #endif 958 } 959 960 void 961 device_set_desc(device_t dev, const char* desc) 962 { 963 device_set_desc_internal(dev, desc, FALSE); 964 } 965 966 void 967 device_set_desc_copy(device_t dev, const char* desc) 968 { 969 device_set_desc_internal(dev, desc, TRUE); 970 } 971 972 void 973 device_set_flags(device_t dev, u_int32_t flags) 974 { 975 dev->devflags = flags; 976 } 977 978 void * 979 device_get_softc(device_t dev) 980 { 981 return dev->softc; 982 } 983 984 void * 985 device_get_ivars(device_t dev) 986 { 987 return dev->ivars; 988 } 989 990 void 991 device_set_ivars(device_t dev, void * ivars) 992 { 993 if (!dev) 994 return; 995 996 dev->ivars = ivars; 997 998 return; 999 } 1000 1001 device_state_t 1002 device_get_state(device_t dev) 1003 { 1004 return dev->state; 1005 } 1006 1007 void 1008 device_enable(device_t dev) 1009 { 1010 dev->flags |= DF_ENABLED; 1011 } 1012 1013 void 1014 device_disable(device_t dev) 1015 { 1016 dev->flags &= ~DF_ENABLED; 1017 } 1018 1019 void 1020 device_busy(device_t dev) 1021 { 1022 if (dev->state < DS_ATTACHED) 1023 panic("device_busy: called for unattached device"); 1024 if (dev->busy == 0 && dev->parent) 1025 device_busy(dev->parent); 1026 dev->busy++; 1027 dev->state = DS_BUSY; 1028 } 1029 1030 void 1031 device_unbusy(device_t dev) 1032 { 1033 if (dev->state != DS_BUSY) 1034 panic("device_unbusy: called for non-busy device"); 1035 dev->busy--; 1036 if (dev->busy == 0) { 1037 if (dev->parent) 1038 device_unbusy(dev->parent); 1039 dev->state = DS_ATTACHED; 1040 } 1041 } 1042 1043 void 1044 device_quiet(device_t dev) 1045 { 1046 dev->flags |= DF_QUIET; 1047 } 1048 1049 void 1050 device_verbose(device_t dev) 1051 { 1052 dev->flags &= ~DF_QUIET; 1053 } 1054 1055 int 1056 device_is_quiet(device_t dev) 1057 { 1058 return (dev->flags & DF_QUIET) != 0; 1059 } 1060 1061 int 1062 device_is_enabled(device_t dev) 1063 { 1064 return (dev->flags & DF_ENABLED) != 0; 1065 } 1066 1067 int 1068 device_is_alive(device_t dev) 1069 { 1070 return dev->state >= DS_ALIVE; 1071 } 1072 1073 int 1074 device_set_devclass(device_t dev, const char *classname) 1075 { 1076 devclass_t dc; 1077 1078 if (!classname) { 1079 if (dev->devclass) 1080 devclass_delete_device(dev->devclass, dev); 1081 return 0; 1082 } 1083 1084 if (dev->devclass) { 1085 printf("device_set_devclass: device class already set\n"); 1086 return EINVAL; 1087 } 1088 1089 dc = devclass_find_internal(classname, TRUE); 1090 if (!dc) 1091 return ENOMEM; 1092 1093 return devclass_add_device(dc, dev); 1094 } 1095 1096 int 1097 device_set_driver(device_t dev, driver_t *driver) 1098 { 1099 if (dev->state >= DS_ATTACHED) 1100 return EBUSY; 1101 1102 if (dev->driver == driver) 1103 return 0; 1104 1105 if (dev->softc) { 1106 free(dev->softc, M_BUS); 1107 dev->softc = NULL; 1108 } 1109 dev->ops = &null_ops; 1110 dev->driver = driver; 1111 if (driver) { 1112 dev->ops = driver->ops; 1113 dev->softc = malloc(driver->softc, M_BUS, M_NOWAIT); 1114 if (!dev->softc) { 1115 dev->ops = &null_ops; 1116 dev->driver = NULL; 1117 return ENOMEM; 1118 } 1119 bzero(dev->softc, driver->softc); 1120 } 1121 return 0; 1122 } 1123 1124 int 1125 device_probe_and_attach(device_t dev) 1126 { 1127 device_t bus = dev->parent; 1128 int error = 0; 1129 1130 if (dev->state >= DS_ALIVE) 1131 return 0; 1132 1133 if (dev->flags & DF_ENABLED) { 1134 error = device_probe_child(bus, dev); 1135 if (!error) { 1136 if (!device_is_quiet(dev)) 1137 device_print_child(bus, dev); 1138 error = DEVICE_ATTACH(dev); 1139 if (!error) 1140 dev->state = DS_ATTACHED; 1141 else { 1142 printf("device_probe_and_attach: %s%d attach returned %d\n", 1143 dev->driver->name, dev->unit, error); 1144 device_set_driver(dev, NULL); 1145 dev->state = DS_NOTPRESENT; 1146 } 1147 } else { 1148 BUS_PROBE_NOMATCH(bus, dev); 1149 } 1150 } else { 1151 if (bootverbose) { 1152 device_print_prettyname(dev); 1153 printf("not probed (disabled)\n"); 1154 } 1155 } 1156 1157 return error; 1158 } 1159 1160 int 1161 device_detach(device_t dev) 1162 { 1163 int error; 1164 1165 PDEBUG(("%s", DEVICENAME(dev))); 1166 if (dev->state == DS_BUSY) 1167 return EBUSY; 1168 if (dev->state != DS_ATTACHED) 1169 return 0; 1170 1171 if ((error = DEVICE_DETACH(dev)) != 0) 1172 return error; 1173 if (dev->parent) 1174 BUS_CHILD_DETACHED(dev->parent, dev); 1175 1176 if (!(dev->flags & DF_FIXEDCLASS)) 1177 devclass_delete_device(dev->devclass, dev); 1178 1179 dev->state = DS_NOTPRESENT; 1180 device_set_driver(dev, NULL); 1181 1182 return 0; 1183 } 1184 1185 int 1186 device_shutdown(device_t dev) 1187 { 1188 if (dev->state < DS_ATTACHED) 1189 return 0; 1190 return DEVICE_SHUTDOWN(dev); 1191 } 1192 1193 #ifdef DEVICE_SYSCTLS 1194 1195 /* 1196 * Sysctl nodes for devices. 1197 */ 1198 1199 SYSCTL_NODE(_hw, OID_AUTO, devices, CTLFLAG_RW, 0, "A list of all devices"); 1200 1201 static int 1202 sysctl_handle_children SYSCTL_HANDLER_ARGS 1203 { 1204 device_t dev = arg1; 1205 device_t child; 1206 int first = 1, error = 0; 1207 1208 for (child = TAILQ_FIRST(&dev->children); child; 1209 child = TAILQ_NEXT(child, link)) { 1210 if (child->nameunit) { 1211 if (!first) { 1212 error = SYSCTL_OUT(req, ",", 1); 1213 if (error) return error; 1214 } else { 1215 first = 0; 1216 } 1217 error = SYSCTL_OUT(req, child->nameunit, strlen(child->nameunit)); 1218 if (error) return error; 1219 } 1220 } 1221 1222 error = SYSCTL_OUT(req, "", 1); 1223 1224 return error; 1225 } 1226 1227 static int 1228 sysctl_handle_state SYSCTL_HANDLER_ARGS 1229 { 1230 device_t dev = arg1; 1231 1232 switch (dev->state) { 1233 case DS_NOTPRESENT: 1234 return SYSCTL_OUT(req, "notpresent", sizeof("notpresent")); 1235 case DS_ALIVE: 1236 return SYSCTL_OUT(req, "alive", sizeof("alive")); 1237 case DS_ATTACHED: 1238 return SYSCTL_OUT(req, "attached", sizeof("attached")); 1239 case DS_BUSY: 1240 return SYSCTL_OUT(req, "busy", sizeof("busy")); 1241 } 1242 1243 return 0; 1244 } 1245 1246 static void 1247 device_register_oids(device_t dev) 1248 { 1249 struct sysctl_oid* oid; 1250 1251 oid = &dev->oid[0]; 1252 bzero(oid, sizeof(*oid)); 1253 oid->oid_parent = &sysctl__hw_devices_children; 1254 oid->oid_number = OID_AUTO; 1255 oid->oid_kind = CTLTYPE_NODE | CTLFLAG_RW; 1256 oid->oid_arg1 = &dev->oidlist[0]; 1257 oid->oid_arg2 = 0; 1258 oid->oid_name = dev->nameunit; 1259 oid->oid_handler = 0; 1260 oid->oid_fmt = "N"; 1261 SLIST_INIT(&dev->oidlist[0]); 1262 sysctl_register_oid(oid); 1263 1264 oid = &dev->oid[1]; 1265 bzero(oid, sizeof(*oid)); 1266 oid->oid_parent = &dev->oidlist[0]; 1267 oid->oid_number = OID_AUTO; 1268 oid->oid_kind = CTLTYPE_STRING | CTLFLAG_RD; 1269 oid->oid_arg1 = dev->desc ? dev->desc : ""; 1270 oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0; 1271 oid->oid_name = "desc"; 1272 oid->oid_handler = sysctl_handle_string; 1273 oid->oid_fmt = "A"; 1274 sysctl_register_oid(oid); 1275 1276 oid = &dev->oid[2]; 1277 bzero(oid, sizeof(*oid)); 1278 oid->oid_parent = &dev->oidlist[0]; 1279 oid->oid_number = OID_AUTO; 1280 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD; 1281 oid->oid_arg1 = dev; 1282 oid->oid_arg2 = 0; 1283 oid->oid_name = "children"; 1284 oid->oid_handler = sysctl_handle_children; 1285 oid->oid_fmt = "A"; 1286 sysctl_register_oid(oid); 1287 1288 oid = &dev->oid[3]; 1289 bzero(oid, sizeof(*oid)); 1290 oid->oid_parent = &dev->oidlist[0]; 1291 oid->oid_number = OID_AUTO; 1292 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD; 1293 oid->oid_arg1 = dev; 1294 oid->oid_arg2 = 0; 1295 oid->oid_name = "state"; 1296 oid->oid_handler = sysctl_handle_state; 1297 oid->oid_fmt = "A"; 1298 sysctl_register_oid(oid); 1299 } 1300 1301 static void 1302 device_unregister_oids(device_t dev) 1303 { 1304 sysctl_unregister_oid(&dev->oid[0]); 1305 sysctl_unregister_oid(&dev->oid[1]); 1306 sysctl_unregister_oid(&dev->oid[2]); 1307 } 1308 1309 #endif 1310 1311 /*======================================*/ 1312 /* 1313 * Access functions for device resources. 1314 */ 1315 1316 /* Supplied by config(8) in ioconf.c */ 1317 extern struct config_device config_devtab[]; 1318 extern int devtab_count; 1319 1320 /* Runtime version */ 1321 struct config_device *devtab = config_devtab; 1322 1323 static int 1324 resource_new_name(const char *name, int unit) 1325 { 1326 struct config_device *new; 1327 1328 new = malloc((devtab_count + 1) * sizeof(*new), M_TEMP, M_NOWAIT); 1329 if (new == NULL) 1330 return -1; 1331 if (devtab && devtab_count > 0) 1332 bcopy(devtab, new, devtab_count * sizeof(*new)); 1333 bzero(&new[devtab_count], sizeof(*new)); 1334 new[devtab_count].name = malloc(strlen(name) + 1, M_TEMP, M_NOWAIT); 1335 if (new[devtab_count].name == NULL) { 1336 free(new, M_TEMP); 1337 return -1; 1338 } 1339 strcpy(new[devtab_count].name, name); 1340 new[devtab_count].unit = unit; 1341 new[devtab_count].resource_count = 0; 1342 new[devtab_count].resources = NULL; 1343 devtab = new; 1344 return devtab_count++; 1345 } 1346 1347 static int 1348 resource_new_resname(int j, const char *resname, resource_type type) 1349 { 1350 struct config_resource *new; 1351 int i; 1352 1353 i = devtab[j].resource_count; 1354 new = malloc((i + 1) * sizeof(*new), M_TEMP, M_NOWAIT); 1355 if (new == NULL) 1356 return -1; 1357 if (devtab[j].resources && i > 0) 1358 bcopy(devtab[j].resources, new, i * sizeof(*new)); 1359 bzero(&new[i], sizeof(*new)); 1360 new[i].name = malloc(strlen(resname) + 1, M_TEMP, M_NOWAIT); 1361 if (new[i].name == NULL) { 1362 free(new, M_TEMP); 1363 return -1; 1364 } 1365 strcpy(new[i].name, resname); 1366 new[i].type = type; 1367 if (devtab[j].resources) 1368 free(devtab[j].resources, M_TEMP); 1369 devtab[j].resources = new; 1370 devtab[j].resource_count = i + 1; 1371 return i; 1372 } 1373 1374 static int 1375 resource_match_string(int i, const char *resname, const char *value) 1376 { 1377 int j; 1378 struct config_resource *res; 1379 1380 for (j = 0, res = devtab[i].resources; 1381 j < devtab[i].resource_count; j++, res++) 1382 if (!strcmp(res->name, resname) 1383 && res->type == RES_STRING 1384 && !strcmp(res->u.stringval, value)) 1385 return j; 1386 return -1; 1387 } 1388 1389 static int 1390 resource_find(const char *name, int unit, const char *resname, 1391 struct config_resource **result) 1392 { 1393 int i, j; 1394 struct config_resource *res; 1395 1396 /* 1397 * First check specific instances, then generic. 1398 */ 1399 for (i = 0; i < devtab_count; i++) { 1400 if (devtab[i].unit < 0) 1401 continue; 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 for (i = 0; i < devtab_count; i++) { 1412 if (devtab[i].unit >= 0) 1413 continue; 1414 /* XXX should this `&& devtab[i].unit == unit' be here? */ 1415 /* XXX if so, then the generic match does nothing */ 1416 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1417 res = devtab[i].resources; 1418 for (j = 0; j < devtab[i].resource_count; j++, res++) 1419 if (!strcmp(res->name, resname)) { 1420 *result = res; 1421 return 0; 1422 } 1423 } 1424 } 1425 return ENOENT; 1426 } 1427 1428 int 1429 resource_int_value(const char *name, int unit, const char *resname, int *result) 1430 { 1431 int error; 1432 struct config_resource *res; 1433 1434 if ((error = resource_find(name, unit, resname, &res)) != 0) 1435 return error; 1436 if (res->type != RES_INT) 1437 return EFTYPE; 1438 *result = res->u.intval; 1439 return 0; 1440 } 1441 1442 int 1443 resource_long_value(const char *name, int unit, const char *resname, 1444 long *result) 1445 { 1446 int error; 1447 struct config_resource *res; 1448 1449 if ((error = resource_find(name, unit, resname, &res)) != 0) 1450 return error; 1451 if (res->type != RES_LONG) 1452 return EFTYPE; 1453 *result = res->u.longval; 1454 return 0; 1455 } 1456 1457 int 1458 resource_string_value(const char *name, int unit, const char *resname, 1459 char **result) 1460 { 1461 int error; 1462 struct config_resource *res; 1463 1464 if ((error = resource_find(name, unit, resname, &res)) != 0) 1465 return error; 1466 if (res->type != RES_STRING) 1467 return EFTYPE; 1468 *result = res->u.stringval; 1469 return 0; 1470 } 1471 1472 int 1473 resource_query_string(int i, const char *resname, const char *value) 1474 { 1475 if (i < 0) 1476 i = 0; 1477 else 1478 i = i + 1; 1479 for (; i < devtab_count; i++) 1480 if (resource_match_string(i, resname, value) >= 0) 1481 return i; 1482 return -1; 1483 } 1484 1485 int 1486 resource_locate(int i, const char *resname) 1487 { 1488 if (i < 0) 1489 i = 0; 1490 else 1491 i = i + 1; 1492 for (; i < devtab_count; i++) 1493 if (!strcmp(devtab[i].name, resname)) 1494 return i; 1495 return -1; 1496 } 1497 1498 int 1499 resource_count(void) 1500 { 1501 return devtab_count; 1502 } 1503 1504 char * 1505 resource_query_name(int i) 1506 { 1507 return devtab[i].name; 1508 } 1509 1510 int 1511 resource_query_unit(int i) 1512 { 1513 return devtab[i].unit; 1514 } 1515 1516 static int 1517 resource_create(const char *name, int unit, const char *resname, 1518 resource_type type, struct config_resource **result) 1519 { 1520 int i, j; 1521 struct config_resource *res = NULL; 1522 1523 for (i = 0; i < devtab_count; i++) { 1524 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1525 res = devtab[i].resources; 1526 break; 1527 } 1528 } 1529 if (res == NULL) { 1530 i = resource_new_name(name, unit); 1531 if (i < 0) 1532 return ENOMEM; 1533 res = devtab[i].resources; 1534 } 1535 for (j = 0; j < devtab[i].resource_count; j++, res++) { 1536 if (!strcmp(res->name, resname)) { 1537 *result = res; 1538 return 0; 1539 } 1540 } 1541 j = resource_new_resname(i, resname, type); 1542 if (j < 0) 1543 return ENOMEM; 1544 res = &devtab[i].resources[j]; 1545 *result = res; 1546 return 0; 1547 } 1548 1549 int 1550 resource_set_int(const char *name, int unit, const char *resname, int value) 1551 { 1552 int error; 1553 struct config_resource *res; 1554 1555 error = resource_create(name, unit, resname, RES_INT, &res); 1556 if (error) 1557 return error; 1558 if (res->type != RES_INT) 1559 return EFTYPE; 1560 res->u.intval = value; 1561 return 0; 1562 } 1563 1564 int 1565 resource_set_long(const char *name, int unit, const char *resname, long value) 1566 { 1567 int error; 1568 struct config_resource *res; 1569 1570 error = resource_create(name, unit, resname, RES_LONG, &res); 1571 if (error) 1572 return error; 1573 if (res->type != RES_LONG) 1574 return EFTYPE; 1575 res->u.longval = value; 1576 return 0; 1577 } 1578 1579 int 1580 resource_set_string(const char *name, int unit, const char *resname, 1581 const char *value) 1582 { 1583 int error; 1584 struct config_resource *res; 1585 1586 error = resource_create(name, unit, resname, RES_STRING, &res); 1587 if (error) 1588 return error; 1589 if (res->type != RES_STRING) 1590 return EFTYPE; 1591 if (res->u.stringval) 1592 free(res->u.stringval, M_TEMP); 1593 res->u.stringval = malloc(strlen(value) + 1, M_TEMP, M_NOWAIT); 1594 if (res->u.stringval == NULL) 1595 return ENOMEM; 1596 strcpy(res->u.stringval, value); 1597 return 0; 1598 } 1599 1600 1601 static void 1602 resource_cfgload(void *dummy __unused) 1603 { 1604 struct config_resource *res, *cfgres; 1605 int i, j; 1606 int error; 1607 char *name, *resname; 1608 int unit; 1609 resource_type type; 1610 char *stringval; 1611 int config_devtab_count; 1612 1613 config_devtab_count = devtab_count; 1614 devtab = NULL; 1615 devtab_count = 0; 1616 1617 for (i = 0; i < config_devtab_count; i++) { 1618 name = config_devtab[i].name; 1619 unit = config_devtab[i].unit; 1620 1621 for (j = 0; j < config_devtab[i].resource_count; j++) { 1622 cfgres = config_devtab[i].resources; 1623 resname = cfgres[j].name; 1624 type = cfgres[j].type; 1625 error = resource_create(name, unit, resname, type, 1626 &res); 1627 if (error) { 1628 printf("create resource %s%d: error %d\n", 1629 name, unit, error); 1630 continue; 1631 } 1632 if (res->type != type) { 1633 printf("type mismatch %s%d: %d != %d\n", 1634 name, unit, res->type, type); 1635 continue; 1636 } 1637 switch (type) { 1638 case RES_INT: 1639 res->u.intval = cfgres[j].u.intval; 1640 break; 1641 case RES_LONG: 1642 res->u.longval = cfgres[j].u.longval; 1643 break; 1644 case RES_STRING: 1645 if (res->u.stringval) 1646 free(res->u.stringval, M_TEMP); 1647 stringval = cfgres[j].u.stringval; 1648 res->u.stringval = malloc(strlen(stringval) + 1, 1649 M_TEMP, M_NOWAIT); 1650 if (res->u.stringval == NULL) 1651 break; 1652 strcpy(res->u.stringval, stringval); 1653 break; 1654 default: 1655 panic("unknown resource type %d\n", type); 1656 } 1657 } 1658 } 1659 } 1660 SYSINIT(cfgload, SI_SUB_KMEM, SI_ORDER_ANY + 50, resource_cfgload, 0) 1661 1662 1663 /*======================================*/ 1664 /* 1665 * Some useful method implementations to make life easier for bus drivers. 1666 */ 1667 1668 void 1669 resource_list_init(struct resource_list *rl) 1670 { 1671 SLIST_INIT(rl); 1672 } 1673 1674 void 1675 resource_list_free(struct resource_list *rl) 1676 { 1677 struct resource_list_entry *rle; 1678 1679 while ((rle = SLIST_FIRST(rl)) != NULL) { 1680 if (rle->res) 1681 panic("resource_list_free: resource entry is busy"); 1682 SLIST_REMOVE_HEAD(rl, link); 1683 free(rle, M_BUS); 1684 } 1685 } 1686 1687 void 1688 resource_list_add(struct resource_list *rl, 1689 int type, int rid, 1690 u_long start, u_long end, u_long count) 1691 { 1692 struct resource_list_entry *rle; 1693 1694 rle = resource_list_find(rl, type, rid); 1695 if (!rle) { 1696 rle = malloc(sizeof(struct resource_list_entry), M_BUS, M_NOWAIT); 1697 if (!rle) 1698 panic("resource_list_add: can't record entry"); 1699 SLIST_INSERT_HEAD(rl, rle, link); 1700 rle->type = type; 1701 rle->rid = rid; 1702 rle->res = NULL; 1703 } 1704 1705 if (rle->res) 1706 panic("resource_list_add: resource entry is busy"); 1707 1708 rle->start = start; 1709 rle->end = end; 1710 rle->count = count; 1711 } 1712 1713 struct resource_list_entry* 1714 resource_list_find(struct resource_list *rl, 1715 int type, int rid) 1716 { 1717 struct resource_list_entry *rle; 1718 1719 SLIST_FOREACH(rle, rl, link) 1720 if (rle->type == type && rle->rid == rid) 1721 return rle; 1722 return NULL; 1723 } 1724 1725 void 1726 resource_list_delete(struct resource_list *rl, 1727 int type, int rid) 1728 { 1729 struct resource_list_entry *rle = resource_list_find(rl, type, rid); 1730 1731 if (rle) { 1732 SLIST_REMOVE(rl, rle, resource_list_entry, link); 1733 free(rle, M_BUS); 1734 } 1735 } 1736 1737 struct resource * 1738 resource_list_alloc(struct resource_list *rl, 1739 device_t bus, device_t child, 1740 int type, int *rid, 1741 u_long start, u_long end, 1742 u_long count, u_int flags) 1743 { 1744 struct resource_list_entry *rle = 0; 1745 int passthrough = (device_get_parent(child) != bus); 1746 int isdefault = (start == 0UL && end == ~0UL); 1747 1748 if (passthrough) { 1749 return BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1750 type, rid, 1751 start, end, count, flags); 1752 } 1753 1754 rle = resource_list_find(rl, type, *rid); 1755 1756 if (!rle) 1757 return 0; /* no resource of that type/rid */ 1758 if (rle->res) 1759 panic("resource_list_alloc: resource entry is busy"); 1760 1761 if (isdefault) { 1762 start = rle->start; 1763 count = max(count, rle->count); 1764 end = max(rle->end, start + count - 1); 1765 } 1766 1767 rle->res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1768 type, rid, start, end, count, flags); 1769 1770 /* 1771 * Record the new range. 1772 */ 1773 if (rle->res) { 1774 rle->start = rman_get_start(rle->res); 1775 rle->end = rman_get_end(rle->res); 1776 rle->count = count; 1777 } 1778 1779 return rle->res; 1780 } 1781 1782 int 1783 resource_list_release(struct resource_list *rl, 1784 device_t bus, device_t child, 1785 int type, int rid, struct resource *res) 1786 { 1787 struct resource_list_entry *rle = 0; 1788 int passthrough = (device_get_parent(child) != bus); 1789 int error; 1790 1791 if (passthrough) { 1792 return BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1793 type, rid, res); 1794 } 1795 1796 rle = resource_list_find(rl, type, rid); 1797 1798 if (!rle) 1799 panic("resource_list_release: can't find resource"); 1800 if (!rle->res) 1801 panic("resource_list_release: resource entry is not busy"); 1802 1803 error = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1804 type, rid, res); 1805 if (error) 1806 return error; 1807 1808 rle->res = NULL; 1809 return 0; 1810 } 1811 1812 /* 1813 * Call DEVICE_IDENTIFY for each driver. 1814 */ 1815 int 1816 bus_generic_probe(device_t dev) 1817 { 1818 devclass_t dc = dev->devclass; 1819 driverlink_t dl; 1820 1821 for (dl = TAILQ_FIRST(&dc->drivers); dl; dl = TAILQ_NEXT(dl, link)) 1822 DEVICE_IDENTIFY(dl->driver, dev); 1823 1824 return 0; 1825 } 1826 1827 int 1828 bus_generic_attach(device_t dev) 1829 { 1830 device_t child; 1831 1832 for (child = TAILQ_FIRST(&dev->children); 1833 child; child = TAILQ_NEXT(child, link)) 1834 device_probe_and_attach(child); 1835 1836 return 0; 1837 } 1838 1839 int 1840 bus_generic_detach(device_t dev) 1841 { 1842 device_t child; 1843 int error; 1844 1845 if (dev->state != DS_ATTACHED) 1846 return EBUSY; 1847 1848 for (child = TAILQ_FIRST(&dev->children); 1849 child; child = TAILQ_NEXT(child, link)) 1850 if ((error = device_detach(child)) != 0) 1851 return error; 1852 1853 return 0; 1854 } 1855 1856 int 1857 bus_generic_shutdown(device_t dev) 1858 { 1859 device_t child; 1860 1861 for (child = TAILQ_FIRST(&dev->children); 1862 child; child = TAILQ_NEXT(child, link)) 1863 device_shutdown(child); 1864 1865 return 0; 1866 } 1867 1868 int 1869 bus_generic_suspend(device_t dev) 1870 { 1871 int error; 1872 device_t child, child2; 1873 1874 for (child = TAILQ_FIRST(&dev->children); 1875 child; child = TAILQ_NEXT(child, link)) { 1876 error = DEVICE_SUSPEND(child); 1877 if (error) { 1878 for (child2 = TAILQ_FIRST(&dev->children); 1879 child2 && child2 != child; 1880 child2 = TAILQ_NEXT(child2, link)) 1881 DEVICE_RESUME(child2); 1882 return (error); 1883 } 1884 } 1885 return 0; 1886 } 1887 1888 int 1889 bus_generic_resume(device_t dev) 1890 { 1891 device_t child; 1892 1893 for (child = TAILQ_FIRST(&dev->children); 1894 child; child = TAILQ_NEXT(child, link)) { 1895 DEVICE_RESUME(child); 1896 /* if resume fails, there's nothing we can usefully do... */ 1897 } 1898 return 0; 1899 } 1900 1901 int 1902 bus_print_child_header (device_t dev, device_t child) 1903 { 1904 int retval = 0; 1905 1906 if (device_get_desc(child)) { 1907 retval += device_printf(child, "<%s>", 1908 device_get_desc(child)); 1909 } else { 1910 retval += printf("%s", device_get_nameunit(child)); 1911 } 1912 1913 return (retval); 1914 } 1915 1916 int 1917 bus_print_child_footer (device_t dev, device_t child) 1918 { 1919 return(printf(" on %s\n", device_get_nameunit(dev))); 1920 } 1921 1922 int 1923 bus_generic_print_child(device_t dev, device_t child) 1924 { 1925 int retval = 0; 1926 1927 retval += bus_print_child_header(dev, child); 1928 retval += bus_print_child_footer(dev, child); 1929 1930 return (retval); 1931 } 1932 1933 int 1934 bus_generic_read_ivar(device_t dev, device_t child, int index, 1935 uintptr_t * result) 1936 { 1937 return ENOENT; 1938 } 1939 1940 int 1941 bus_generic_write_ivar(device_t dev, device_t child, int index, 1942 uintptr_t value) 1943 { 1944 return ENOENT; 1945 } 1946 1947 void 1948 bus_generic_driver_added(device_t dev, driver_t *driver) 1949 { 1950 device_t child; 1951 1952 DEVICE_IDENTIFY(driver, dev); 1953 for (child = TAILQ_FIRST(&dev->children); 1954 child; child = TAILQ_NEXT(child, link)) 1955 if (child->state == DS_NOTPRESENT) 1956 device_probe_and_attach(child); 1957 } 1958 1959 int 1960 bus_generic_setup_intr(device_t dev, device_t child, struct resource *irq, 1961 int flags, driver_intr_t *intr, void *arg, 1962 void **cookiep) 1963 { 1964 /* Propagate up the bus hierarchy until someone handles it. */ 1965 if (dev->parent) 1966 return (BUS_SETUP_INTR(dev->parent, child, irq, flags, 1967 intr, arg, cookiep)); 1968 else 1969 return (EINVAL); 1970 } 1971 1972 int 1973 bus_generic_teardown_intr(device_t dev, device_t child, struct resource *irq, 1974 void *cookie) 1975 { 1976 /* Propagate up the bus hierarchy until someone handles it. */ 1977 if (dev->parent) 1978 return (BUS_TEARDOWN_INTR(dev->parent, child, irq, cookie)); 1979 else 1980 return (EINVAL); 1981 } 1982 1983 struct resource * 1984 bus_generic_alloc_resource(device_t dev, device_t child, int type, int *rid, 1985 u_long start, u_long end, u_long count, u_int flags) 1986 { 1987 /* Propagate up the bus hierarchy until someone handles it. */ 1988 if (dev->parent) 1989 return (BUS_ALLOC_RESOURCE(dev->parent, child, type, rid, 1990 start, end, count, flags)); 1991 else 1992 return (NULL); 1993 } 1994 1995 int 1996 bus_generic_release_resource(device_t dev, device_t child, int type, int rid, 1997 struct resource *r) 1998 { 1999 /* Propagate up the bus hierarchy until someone handles it. */ 2000 if (dev->parent) 2001 return (BUS_RELEASE_RESOURCE(dev->parent, child, type, rid, 2002 r)); 2003 else 2004 return (EINVAL); 2005 } 2006 2007 int 2008 bus_generic_activate_resource(device_t dev, device_t child, int type, int rid, 2009 struct resource *r) 2010 { 2011 /* Propagate up the bus hierarchy until someone handles it. */ 2012 if (dev->parent) 2013 return (BUS_ACTIVATE_RESOURCE(dev->parent, child, type, rid, 2014 r)); 2015 else 2016 return (EINVAL); 2017 } 2018 2019 int 2020 bus_generic_deactivate_resource(device_t dev, device_t child, int type, 2021 int rid, struct resource *r) 2022 { 2023 /* Propagate up the bus hierarchy until someone handles it. */ 2024 if (dev->parent) 2025 return (BUS_DEACTIVATE_RESOURCE(dev->parent, child, type, rid, 2026 r)); 2027 else 2028 return (EINVAL); 2029 } 2030 2031 /* 2032 * Some convenience functions to make it easier for drivers to use the 2033 * resource-management functions. All these really do is hide the 2034 * indirection through the parent's method table, making for slightly 2035 * less-wordy code. In the future, it might make sense for this code 2036 * to maintain some sort of a list of resources allocated by each device. 2037 */ 2038 struct resource * 2039 bus_alloc_resource(device_t dev, int type, int *rid, u_long start, u_long end, 2040 u_long count, u_int flags) 2041 { 2042 if (dev->parent == 0) 2043 return (0); 2044 return (BUS_ALLOC_RESOURCE(dev->parent, dev, type, rid, start, end, 2045 count, flags)); 2046 } 2047 2048 int 2049 bus_activate_resource(device_t dev, int type, int rid, struct resource *r) 2050 { 2051 if (dev->parent == 0) 2052 return (EINVAL); 2053 return (BUS_ACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 2054 } 2055 2056 int 2057 bus_deactivate_resource(device_t dev, int type, int rid, struct resource *r) 2058 { 2059 if (dev->parent == 0) 2060 return (EINVAL); 2061 return (BUS_DEACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 2062 } 2063 2064 int 2065 bus_release_resource(device_t dev, int type, int rid, struct resource *r) 2066 { 2067 if (dev->parent == 0) 2068 return (EINVAL); 2069 return (BUS_RELEASE_RESOURCE(dev->parent, dev, 2070 type, rid, r)); 2071 } 2072 2073 int 2074 bus_setup_intr(device_t dev, struct resource *r, int flags, 2075 driver_intr_t handler, void *arg, void **cookiep) 2076 { 2077 if (dev->parent == 0) 2078 return (EINVAL); 2079 return (BUS_SETUP_INTR(dev->parent, dev, r, flags, 2080 handler, arg, cookiep)); 2081 } 2082 2083 int 2084 bus_teardown_intr(device_t dev, struct resource *r, void *cookie) 2085 { 2086 if (dev->parent == 0) 2087 return (EINVAL); 2088 return (BUS_TEARDOWN_INTR(dev->parent, dev, r, cookie)); 2089 } 2090 2091 int 2092 bus_set_resource(device_t dev, int type, int rid, 2093 u_long start, u_long count) 2094 { 2095 return BUS_SET_RESOURCE(device_get_parent(dev), dev, type, rid, 2096 start, count); 2097 } 2098 2099 int 2100 bus_get_resource(device_t dev, int type, int rid, 2101 u_long *startp, u_long *countp) 2102 { 2103 return BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2104 startp, countp); 2105 } 2106 2107 u_long 2108 bus_get_resource_start(device_t dev, int type, int rid) 2109 { 2110 u_long start, count; 2111 int error; 2112 2113 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2114 &start, &count); 2115 if (error) 2116 return 0; 2117 return start; 2118 } 2119 2120 u_long 2121 bus_get_resource_count(device_t dev, int type, int rid) 2122 { 2123 u_long start, count; 2124 int error; 2125 2126 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2127 &start, &count); 2128 if (error) 2129 return 0; 2130 return count; 2131 } 2132 2133 void 2134 bus_delete_resource(device_t dev, int type, int rid) 2135 { 2136 BUS_DELETE_RESOURCE(device_get_parent(dev), dev, type, rid); 2137 } 2138 2139 static int 2140 root_print_child(device_t dev, device_t child) 2141 { 2142 return (0); 2143 } 2144 2145 static int 2146 root_setup_intr(device_t dev, device_t child, driver_intr_t *intr, void *arg, 2147 void **cookiep) 2148 { 2149 /* 2150 * If an interrupt mapping gets to here something bad has happened. 2151 */ 2152 panic("root_setup_intr"); 2153 } 2154 2155 static device_method_t root_methods[] = { 2156 /* Device interface */ 2157 DEVMETHOD(device_shutdown, bus_generic_shutdown), 2158 DEVMETHOD(device_suspend, bus_generic_suspend), 2159 DEVMETHOD(device_resume, bus_generic_resume), 2160 2161 /* Bus interface */ 2162 DEVMETHOD(bus_print_child, root_print_child), 2163 DEVMETHOD(bus_read_ivar, bus_generic_read_ivar), 2164 DEVMETHOD(bus_write_ivar, bus_generic_write_ivar), 2165 DEVMETHOD(bus_setup_intr, root_setup_intr), 2166 2167 { 0, 0 } 2168 }; 2169 2170 static driver_t root_driver = { 2171 "root", 2172 root_methods, 2173 1, /* no softc */ 2174 }; 2175 2176 device_t root_bus; 2177 devclass_t root_devclass; 2178 2179 static int 2180 root_bus_module_handler(module_t mod, int what, void* arg) 2181 { 2182 switch (what) { 2183 case MOD_LOAD: 2184 compile_methods(&root_driver); 2185 root_bus = make_device(NULL, "root", 0); 2186 root_bus->desc = "System root bus"; 2187 root_bus->ops = root_driver.ops; 2188 root_bus->driver = &root_driver; 2189 root_bus->state = DS_ATTACHED; 2190 root_devclass = devclass_find_internal("root", FALSE); 2191 return 0; 2192 2193 case MOD_SHUTDOWN: 2194 device_shutdown(root_bus); 2195 return 0; 2196 } 2197 2198 return 0; 2199 } 2200 2201 static moduledata_t root_bus_mod = { 2202 "rootbus", 2203 root_bus_module_handler, 2204 0 2205 }; 2206 DECLARE_MODULE(rootbus, root_bus_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 2207 2208 void 2209 root_bus_configure(void) 2210 { 2211 device_t dev; 2212 2213 PDEBUG((".")); 2214 2215 for (dev = TAILQ_FIRST(&root_bus->children); dev; 2216 dev = TAILQ_NEXT(dev, link)) { 2217 device_probe_and_attach(dev); 2218 } 2219 } 2220 2221 int 2222 driver_module_handler(module_t mod, int what, void *arg) 2223 { 2224 int error, i; 2225 struct driver_module_data *dmd; 2226 devclass_t bus_devclass; 2227 2228 dmd = (struct driver_module_data *)arg; 2229 bus_devclass = devclass_find_internal(dmd->dmd_busname, TRUE); 2230 error = 0; 2231 2232 switch (what) { 2233 case MOD_LOAD: 2234 if (dmd->dmd_chainevh) 2235 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2236 2237 for (i = 0; !error && i < dmd->dmd_ndrivers; i++) { 2238 PDEBUG(("Loading module: driver %s on bus %s", 2239 DRIVERNAME(dmd->dmd_drivers[i]), 2240 dmd->dmd_busname)); 2241 error = devclass_add_driver(bus_devclass, 2242 dmd->dmd_drivers[i]); 2243 } 2244 if (error) 2245 break; 2246 2247 /* 2248 * The drivers loaded in this way are assumed to all 2249 * implement the same devclass. 2250 */ 2251 *dmd->dmd_devclass = 2252 devclass_find_internal(dmd->dmd_drivers[0]->name, 2253 TRUE); 2254 break; 2255 2256 case MOD_UNLOAD: 2257 for (i = 0; !error && i < dmd->dmd_ndrivers; i++) { 2258 PDEBUG(("Unloading module: driver %s from bus %s", 2259 DRIVERNAME(dmd->dmd_drivers[i]), 2260 dmd->dmd_busname)); 2261 error = devclass_delete_driver(bus_devclass, 2262 dmd->dmd_drivers[i]); 2263 } 2264 2265 if (!error && dmd->dmd_chainevh) 2266 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2267 break; 2268 } 2269 2270 return (error); 2271 } 2272 2273 #ifdef BUS_DEBUG 2274 2275 /* the _short versions avoid iteration by not calling anything that prints 2276 * more than oneliners. I love oneliners. 2277 */ 2278 2279 static void 2280 print_method_list(device_method_t *m, int indent) 2281 { 2282 int i; 2283 2284 if (!m) 2285 return; 2286 2287 for (i = 0; m->desc; i++, m++) 2288 indentprintf(("method %d: %s, offset=%d\n", 2289 i, m->desc->name, m->desc->offset)); 2290 } 2291 2292 static void 2293 print_device_ops(device_ops_t ops, int indent) 2294 { 2295 int i; 2296 int count = 0; 2297 2298 if (!ops) 2299 return; 2300 2301 /* we present a list of the methods that are pointing to the 2302 * error_method, but ignore the 0'th elements; it is always 2303 * error_method. 2304 */ 2305 for (i = 1; i < ops->maxoffset; i++) { 2306 if (ops->methods[i] == error_method) { 2307 if (count == 0) 2308 indentprintf(("error_method:")); 2309 printf(" %d", i); 2310 count++; 2311 } 2312 } 2313 if (count) 2314 printf("\n"); 2315 2316 indentprintf(("(%d method%s, %d valid, %d error_method%s)\n", 2317 ops->maxoffset-1, (ops->maxoffset-1 == 1? "":"s"), 2318 ops->maxoffset-1-count, 2319 count, (count == 1? "":"'s"))); 2320 } 2321 2322 static void 2323 print_device_short(device_t dev, int indent) 2324 { 2325 if (!dev) 2326 return; 2327 2328 indentprintf(("device %d: <%s> %sparent,%schildren,%s%s%s%s,%sivars,%ssoftc,busy=%d\n", 2329 dev->unit, dev->desc, 2330 (dev->parent? "":"no "), 2331 (TAILQ_EMPTY(&dev->children)? "no ":""), 2332 (dev->flags&DF_ENABLED? "enabled,":"disabled,"), 2333 (dev->flags&DF_FIXEDCLASS? "fixed,":""), 2334 (dev->flags&DF_WILDCARD? "wildcard,":""), 2335 (dev->flags&DF_DESCMALLOCED? "descmalloced,":""), 2336 (dev->ivars? "":"no "), 2337 (dev->softc? "":"no "), 2338 dev->busy)); 2339 } 2340 2341 static void 2342 print_device(device_t dev, int indent) 2343 { 2344 if (!dev) 2345 return; 2346 2347 print_device_short(dev, indent); 2348 2349 indentprintf(("Parent:\n")); 2350 print_device_short(dev->parent, indent+1); 2351 indentprintf(("Methods:\n")); 2352 print_device_ops(dev->ops, indent+1); 2353 indentprintf(("Driver:\n")); 2354 print_driver_short(dev->driver, indent+1); 2355 indentprintf(("Devclass:\n")); 2356 print_devclass_short(dev->devclass, indent+1); 2357 } 2358 2359 void 2360 print_device_tree_short(device_t dev, int indent) 2361 /* print the device and all its children (indented) */ 2362 { 2363 device_t child; 2364 2365 if (!dev) 2366 return; 2367 2368 print_device_short(dev, indent); 2369 2370 for (child = TAILQ_FIRST(&dev->children); child; 2371 child = TAILQ_NEXT(child, link)) 2372 print_device_tree_short(child, indent+1); 2373 } 2374 2375 void 2376 print_device_tree(device_t dev, int indent) 2377 /* print the device and all its children (indented) */ 2378 { 2379 device_t child; 2380 2381 if (!dev) 2382 return; 2383 2384 print_device(dev, indent); 2385 2386 for (child = TAILQ_FIRST(&dev->children); child; 2387 child = TAILQ_NEXT(child, link)) 2388 print_device_tree(child, indent+1); 2389 } 2390 2391 static void 2392 print_driver_short(driver_t *driver, int indent) 2393 { 2394 if (!driver) 2395 return; 2396 2397 indentprintf(("driver %s: softc size = %d\n", 2398 driver->name, driver->softc)); 2399 } 2400 2401 static void 2402 print_driver(driver_t *driver, int indent) 2403 { 2404 if (!driver) 2405 return; 2406 2407 print_driver_short(driver, indent); 2408 indentprintf(("Methods:\n")); 2409 print_method_list(driver->methods, indent+1); 2410 indentprintf(("Operations:\n")); 2411 print_device_ops(driver->ops, indent+1); 2412 } 2413 2414 2415 static void 2416 print_driver_list(driver_list_t drivers, int indent) 2417 { 2418 driverlink_t driver; 2419 2420 for (driver = TAILQ_FIRST(&drivers); driver; 2421 driver = TAILQ_NEXT(driver, link)) 2422 print_driver(driver->driver, indent); 2423 } 2424 2425 static void 2426 print_devclass_short(devclass_t dc, int indent) 2427 { 2428 if ( !dc ) 2429 return; 2430 2431 indentprintf(("devclass %s: max units = %d, next unit = %d\n", 2432 dc->name, dc->maxunit, dc->nextunit)); 2433 } 2434 2435 static void 2436 print_devclass(devclass_t dc, int indent) 2437 { 2438 int i; 2439 2440 if ( !dc ) 2441 return; 2442 2443 print_devclass_short(dc, indent); 2444 indentprintf(("Drivers:\n")); 2445 print_driver_list(dc->drivers, indent+1); 2446 2447 indentprintf(("Devices:\n")); 2448 for (i = 0; i < dc->maxunit; i++) 2449 if (dc->devices[i]) 2450 print_device(dc->devices[i], indent+1); 2451 } 2452 2453 void 2454 print_devclass_list_short(void) 2455 { 2456 devclass_t dc; 2457 2458 printf("Short listing of devclasses, drivers & devices:\n"); 2459 for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) 2460 print_devclass_short(dc, 0); 2461 } 2462 2463 void 2464 print_devclass_list(void) 2465 { 2466 devclass_t dc; 2467 2468 printf("Full listing of devclasses, drivers & devices:\n"); 2469 for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) 2470 print_devclass(dc, 0); 2471 } 2472 2473 #endif 2474