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: src/sys/kern/subr_bus.c,v 1.54.2.9 2002/10/10 15:13:32 jhb Exp $ 27 * $DragonFly: src/sys/kern/subr_bus.c,v 1.21 2004/07/08 12:43:32 joerg Exp $ 28 */ 29 30 #include "opt_bus.h" 31 32 #include <sys/param.h> 33 #include <sys/queue.h> 34 #include <sys/malloc.h> 35 #include <sys/kernel.h> 36 #include <sys/module.h> 37 #ifdef DEVICE_SYSCTLS 38 #include <sys/sysctl.h> 39 #endif 40 #include <sys/kobj.h> 41 #include <sys/bus_private.h> 42 #include <sys/systm.h> 43 #include <machine/bus.h> 44 #include <sys/rman.h> 45 #include <machine/stdarg.h> /* for device_printf() */ 46 47 MALLOC_DEFINE(M_BUS, "bus", "Bus data structures"); 48 49 #ifdef BUS_DEBUG 50 #define PDEBUG(a) (printf("%s:%d: ", __FUNCTION__, __LINE__), printf a, printf("\n")) 51 #define DEVICENAME(d) ((d)? device_get_name(d): "no device") 52 #define DRIVERNAME(d) ((d)? d->name : "no driver") 53 #define DEVCLANAME(d) ((d)? d->name : "no devclass") 54 55 /* Produce the indenting, indent*2 spaces plus a '.' ahead of that to 56 * prevent syslog from deleting initial spaces 57 */ 58 #define indentprintf(p) do { int iJ; printf("."); for (iJ=0; iJ<indent; iJ++) printf(" "); printf p ; } while(0) 59 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_device_short(d,i) /* nop */ 80 #define print_device(d,i) /* nop */ 81 #define print_device_tree_short(d,i) /* nop */ 82 #define print_device_tree(d,i) /* nop */ 83 #define print_driver_short(d,i) /* nop */ 84 #define print_driver(d,i) /* nop */ 85 #define print_driver_list(d,i) /* nop */ 86 #define print_devclass_short(d,i) /* nop */ 87 #define print_devclass(d,i) /* nop */ 88 #define print_devclass_list_short() /* nop */ 89 #define print_devclass_list() /* nop */ 90 #endif 91 92 #ifdef DEVICE_SYSCTLS 93 static void device_register_oids(device_t dev); 94 static void device_unregister_oids(device_t dev); 95 #endif 96 97 kobj_method_t null_methods[] = { 98 { 0, 0 } 99 }; 100 101 DEFINE_CLASS(null, null_methods, 0); 102 103 /* 104 * Devclass implementation 105 */ 106 107 static devclass_list_t devclasses = TAILQ_HEAD_INITIALIZER(devclasses); 108 109 static devclass_t 110 devclass_find_internal(const char *classname, const char *parentname, 111 int create) 112 { 113 devclass_t dc; 114 115 PDEBUG(("looking for %s", classname)); 116 if (classname == NULL) 117 return(NULL); 118 119 TAILQ_FOREACH(dc, &devclasses, link) 120 if (!strcmp(dc->name, classname)) 121 break; 122 123 if (create && !dc) { 124 PDEBUG(("creating %s", classname)); 125 dc = malloc(sizeof(struct devclass) + strlen(classname) + 1, 126 M_BUS, M_INTWAIT | M_ZERO); 127 if (!dc) 128 return(NULL); 129 dc->parent = NULL; 130 dc->name = (char*) (dc + 1); 131 strcpy(dc->name, classname); 132 dc->devices = NULL; 133 dc->maxunit = 0; 134 TAILQ_INIT(&dc->drivers); 135 TAILQ_INSERT_TAIL(&devclasses, dc, link); 136 } 137 if (parentname && dc && !dc->parent) 138 dc->parent = devclass_find_internal(parentname, NULL, FALSE); 139 140 return(dc); 141 } 142 143 devclass_t 144 devclass_create(const char *classname) 145 { 146 return(devclass_find_internal(classname, NULL, TRUE)); 147 } 148 149 devclass_t 150 devclass_find(const char *classname) 151 { 152 return(devclass_find_internal(classname, NULL, FALSE)); 153 } 154 155 int 156 devclass_add_driver(devclass_t dc, driver_t *driver) 157 { 158 driverlink_t dl; 159 int i; 160 161 PDEBUG(("%s", DRIVERNAME(driver))); 162 163 dl = malloc(sizeof *dl, M_BUS, M_INTWAIT | M_ZERO); 164 if (!dl) 165 return(ENOMEM); 166 167 /* 168 * Compile the driver's methods. Also increase the reference count 169 * so that the class doesn't get freed when the last instance 170 * goes. This means we can safely use static methods and avoids a 171 * double-free in devclass_delete_driver. 172 */ 173 kobj_class_instantiate(driver); 174 175 /* 176 * Make sure the devclass which the driver is implementing exists. 177 */ 178 devclass_find_internal(driver->name, NULL, TRUE); 179 180 dl->driver = driver; 181 TAILQ_INSERT_TAIL(&dc->drivers, dl, link); 182 183 /* 184 * Call BUS_DRIVER_ADDED for any existing busses in this class. 185 */ 186 for (i = 0; i < dc->maxunit; i++) 187 if (dc->devices[i]) 188 BUS_DRIVER_ADDED(dc->devices[i], driver); 189 190 return(0); 191 } 192 193 int 194 devclass_delete_driver(devclass_t busclass, driver_t *driver) 195 { 196 devclass_t dc = devclass_find(driver->name); 197 driverlink_t dl; 198 device_t dev; 199 int i; 200 int error; 201 202 PDEBUG(("%s from devclass %s", driver->name, DEVCLANAME(busclass))); 203 204 if (!dc) 205 return(0); 206 207 /* 208 * Find the link structure in the bus' list of drivers. 209 */ 210 TAILQ_FOREACH(dl, &busclass->drivers, link) 211 if (dl->driver == driver) 212 break; 213 214 if (!dl) { 215 PDEBUG(("%s not found in %s list", driver->name, busclass->name)); 216 return(ENOENT); 217 } 218 219 /* 220 * Disassociate from any devices. We iterate through all the 221 * devices in the devclass of the driver and detach any which are 222 * using the driver and which have a parent in the devclass which 223 * we are deleting from. 224 * 225 * Note that since a driver can be in multiple devclasses, we 226 * should not detach devices which are not children of devices in 227 * the affected devclass. 228 */ 229 for (i = 0; i < dc->maxunit; i++) 230 if (dc->devices[i]) { 231 dev = dc->devices[i]; 232 if (dev->driver == driver && dev->parent && 233 dev->parent->devclass == busclass) { 234 if ((error = device_detach(dev)) != 0) 235 return(error); 236 device_set_driver(dev, NULL); 237 } 238 } 239 240 TAILQ_REMOVE(&busclass->drivers, dl, link); 241 free(dl, M_BUS); 242 243 kobj_class_uninstantiate(driver); 244 245 return(0); 246 } 247 248 static driverlink_t 249 devclass_find_driver_internal(devclass_t dc, const char *classname) 250 { 251 driverlink_t dl; 252 253 PDEBUG(("%s in devclass %s", classname, DEVCLANAME(dc))); 254 255 TAILQ_FOREACH(dl, &dc->drivers, link) 256 if (!strcmp(dl->driver->name, classname)) 257 return(dl); 258 259 PDEBUG(("not found")); 260 return(NULL); 261 } 262 263 kobj_class_t 264 devclass_find_driver(devclass_t dc, const char *classname) 265 { 266 driverlink_t dl; 267 268 dl = devclass_find_driver_internal(dc, classname); 269 if (dl) 270 return(dl->driver); 271 else 272 return(NULL); 273 } 274 275 const char * 276 devclass_get_name(devclass_t dc) 277 { 278 return(dc->name); 279 } 280 281 device_t 282 devclass_get_device(devclass_t dc, int unit) 283 { 284 if (dc == NULL || unit < 0 || unit >= dc->maxunit) 285 return(NULL); 286 return(dc->devices[unit]); 287 } 288 289 void * 290 devclass_get_softc(devclass_t dc, int unit) 291 { 292 device_t dev; 293 294 dev = devclass_get_device(dc, unit); 295 if (!dev) 296 return(NULL); 297 298 return(device_get_softc(dev)); 299 } 300 301 int 302 devclass_get_devices(devclass_t dc, device_t **devlistp, int *devcountp) 303 { 304 int i; 305 int count; 306 device_t *list; 307 308 count = 0; 309 for (i = 0; i < dc->maxunit; i++) 310 if (dc->devices[i]) 311 count++; 312 313 list = malloc(count * sizeof(device_t), M_TEMP, M_INTWAIT | M_ZERO); 314 if (list == NULL) 315 return(ENOMEM); 316 317 count = 0; 318 for (i = 0; i < dc->maxunit; i++) 319 if (dc->devices[i]) { 320 list[count] = dc->devices[i]; 321 count++; 322 } 323 324 *devlistp = list; 325 *devcountp = count; 326 327 return(0); 328 } 329 330 int 331 devclass_get_maxunit(devclass_t dc) 332 { 333 return(dc->maxunit); 334 } 335 336 void 337 devclass_set_parent(devclass_t dc, devclass_t pdc) 338 { 339 dc->parent = pdc; 340 } 341 342 devclass_t 343 devclass_get_parent(devclass_t dc) 344 { 345 return(dc->parent); 346 } 347 348 static int 349 devclass_alloc_unit(devclass_t dc, int *unitp) 350 { 351 int unit = *unitp; 352 353 PDEBUG(("unit %d in devclass %s", unit, DEVCLANAME(dc))); 354 355 /* If we have been given a wired unit number, check for existing device */ 356 if (unit != -1) { 357 if (unit >= 0 && unit < dc->maxunit && 358 dc->devices[unit] != NULL) { 359 if (bootverbose) 360 printf("%s-: %s%d exists, using next available unit number\n", 361 dc->name, dc->name, unit); 362 /* find the next available slot */ 363 while (++unit < dc->maxunit && dc->devices[unit] != NULL) 364 ; 365 } 366 } else { 367 /* Unwired device, find the next available slot for it */ 368 unit = 0; 369 while (unit < dc->maxunit && dc->devices[unit] != NULL) 370 unit++; 371 } 372 373 /* 374 * We've selected a unit beyond the length of the table, so let's 375 * extend the table to make room for all units up to and including 376 * this one. 377 */ 378 if (unit >= dc->maxunit) { 379 device_t *newlist; 380 int newsize; 381 382 newsize = roundup((unit + 1), MINALLOCSIZE / sizeof(device_t)); 383 newlist = malloc(sizeof(device_t) * newsize, M_BUS, 384 M_INTWAIT | M_ZERO); 385 if (newlist == NULL) 386 return(ENOMEM); 387 bcopy(dc->devices, newlist, sizeof(device_t) * dc->maxunit); 388 if (dc->devices) 389 free(dc->devices, M_BUS); 390 dc->devices = newlist; 391 dc->maxunit = newsize; 392 } 393 PDEBUG(("now: unit %d in devclass %s", unit, DEVCLANAME(dc))); 394 395 *unitp = unit; 396 return(0); 397 } 398 399 static int 400 devclass_add_device(devclass_t dc, device_t dev) 401 { 402 int buflen, error; 403 404 PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); 405 406 buflen = strlen(dc->name) + 5; 407 dev->nameunit = malloc(buflen, M_BUS, M_INTWAIT | M_ZERO); 408 if (!dev->nameunit) 409 return(ENOMEM); 410 411 if ((error = devclass_alloc_unit(dc, &dev->unit)) != 0) { 412 free(dev->nameunit, M_BUS); 413 dev->nameunit = NULL; 414 return(error); 415 } 416 dc->devices[dev->unit] = dev; 417 dev->devclass = dc; 418 snprintf(dev->nameunit, buflen, "%s%d", dc->name, dev->unit); 419 420 #ifdef DEVICE_SYSCTLS 421 device_register_oids(dev); 422 #endif 423 424 return(0); 425 } 426 427 static int 428 devclass_delete_device(devclass_t dc, device_t dev) 429 { 430 if (!dc || !dev) 431 return(0); 432 433 PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); 434 435 if (dev->devclass != dc || dc->devices[dev->unit] != dev) 436 panic("devclass_delete_device: inconsistent device class"); 437 dc->devices[dev->unit] = NULL; 438 if (dev->flags & DF_WILDCARD) 439 dev->unit = -1; 440 dev->devclass = NULL; 441 free(dev->nameunit, M_BUS); 442 dev->nameunit = NULL; 443 444 #ifdef DEVICE_SYSCTLS 445 device_unregister_oids(dev); 446 #endif 447 448 return(0); 449 } 450 451 static device_t 452 make_device(device_t parent, const char *name, int unit) 453 { 454 device_t dev; 455 devclass_t dc; 456 457 PDEBUG(("%s at %s as unit %d", name, DEVICENAME(parent), unit)); 458 459 if (name != NULL) { 460 dc = devclass_find_internal(name, NULL, TRUE); 461 if (!dc) { 462 printf("make_device: can't find device class %s\n", name); 463 return(NULL); 464 } 465 } else 466 dc = NULL; 467 468 dev = malloc(sizeof(struct device), M_BUS, M_INTWAIT | M_ZERO); 469 if (!dev) 470 return(0); 471 472 dev->parent = parent; 473 TAILQ_INIT(&dev->children); 474 kobj_init((kobj_t) dev, &null_class); 475 dev->driver = NULL; 476 dev->devclass = NULL; 477 dev->unit = unit; 478 dev->nameunit = NULL; 479 dev->desc = NULL; 480 dev->busy = 0; 481 dev->devflags = 0; 482 dev->flags = DF_ENABLED; 483 dev->order = 0; 484 if (unit == -1) 485 dev->flags |= DF_WILDCARD; 486 if (name) { 487 dev->flags |= DF_FIXEDCLASS; 488 if (devclass_add_device(dc, dev) != 0) { 489 kobj_delete((kobj_t)dev, M_BUS); 490 return(NULL); 491 } 492 } 493 dev->ivars = NULL; 494 dev->softc = NULL; 495 496 dev->state = DS_NOTPRESENT; 497 498 return(dev); 499 } 500 501 static int 502 device_print_child(device_t dev, device_t child) 503 { 504 int retval = 0; 505 506 if (device_is_alive(child)) 507 retval += BUS_PRINT_CHILD(dev, child); 508 else 509 retval += device_printf(child, " not found\n"); 510 511 return(retval); 512 } 513 514 device_t 515 device_add_child(device_t dev, const char *name, int unit) 516 { 517 return device_add_child_ordered(dev, 0, name, unit); 518 } 519 520 device_t 521 device_add_child_ordered(device_t dev, int order, const char *name, int unit) 522 { 523 device_t child; 524 device_t place; 525 526 PDEBUG(("%s at %s with order %d as unit %d", name, DEVICENAME(dev), 527 order, unit)); 528 529 child = make_device(dev, name, unit); 530 if (child == NULL) 531 return child; 532 child->order = order; 533 534 TAILQ_FOREACH(place, &dev->children, link) 535 if (place->order > order) 536 break; 537 538 if (place) { 539 /* 540 * The device 'place' is the first device whose order is 541 * greater than the new child. 542 */ 543 TAILQ_INSERT_BEFORE(place, child, link); 544 } else { 545 /* 546 * The new child's order is greater or equal to the order of 547 * any existing device. Add the child to the tail of the list. 548 */ 549 TAILQ_INSERT_TAIL(&dev->children, child, link); 550 } 551 552 return(child); 553 } 554 555 int 556 device_delete_child(device_t dev, device_t child) 557 { 558 int error; 559 device_t grandchild; 560 561 PDEBUG(("%s from %s", DEVICENAME(child), DEVICENAME(dev))); 562 563 /* remove children first */ 564 while ( (grandchild = TAILQ_FIRST(&child->children)) ) { 565 error = device_delete_child(child, grandchild); 566 if (error) 567 return(error); 568 } 569 570 if ((error = device_detach(child)) != 0) 571 return(error); 572 if (child->devclass) 573 devclass_delete_device(child->devclass, child); 574 TAILQ_REMOVE(&dev->children, child, link); 575 device_set_desc(child, NULL); 576 kobj_delete((kobj_t)child, M_BUS); 577 578 return(0); 579 } 580 581 /* 582 * Find only devices attached to this bus. 583 */ 584 device_t 585 device_find_child(device_t dev, const char *classname, int unit) 586 { 587 devclass_t dc; 588 device_t child; 589 590 dc = devclass_find(classname); 591 if (!dc) 592 return(NULL); 593 594 child = devclass_get_device(dc, unit); 595 if (child && child->parent == dev) 596 return(child); 597 return(NULL); 598 } 599 600 static driverlink_t 601 first_matching_driver(devclass_t dc, device_t dev) 602 { 603 if (dev->devclass) 604 return(devclass_find_driver_internal(dc, dev->devclass->name)); 605 else 606 return(TAILQ_FIRST(&dc->drivers)); 607 } 608 609 static driverlink_t 610 next_matching_driver(devclass_t dc, device_t dev, driverlink_t last) 611 { 612 if (dev->devclass) { 613 driverlink_t dl; 614 for (dl = TAILQ_NEXT(last, link); dl; dl = TAILQ_NEXT(dl, link)) 615 if (!strcmp(dev->devclass->name, dl->driver->name)) 616 return(dl); 617 return(NULL); 618 } else 619 return(TAILQ_NEXT(last, link)); 620 } 621 622 static int 623 device_probe_child(device_t dev, device_t child) 624 { 625 devclass_t dc; 626 driverlink_t best = 0; 627 driverlink_t dl; 628 int result, pri = 0; 629 int hasclass = (child->devclass != 0); 630 631 dc = dev->devclass; 632 if (!dc) 633 panic("device_probe_child: parent device has no devclass"); 634 635 if (child->state == DS_ALIVE) 636 return(0); 637 638 for (; dc; dc = dc->parent) { 639 for (dl = first_matching_driver(dc, child); dl; 640 dl = next_matching_driver(dc, child, dl)) { 641 PDEBUG(("Trying %s", DRIVERNAME(dl->driver))); 642 device_set_driver(child, dl->driver); 643 if (!hasclass) 644 device_set_devclass(child, dl->driver->name); 645 result = DEVICE_PROBE(child); 646 if (!hasclass) 647 device_set_devclass(child, 0); 648 649 /* 650 * If the driver returns SUCCESS, there can be 651 * no higher match for this device. 652 */ 653 if (result == 0) { 654 best = dl; 655 pri = 0; 656 break; 657 } 658 659 /* 660 * The driver returned an error so it 661 * certainly doesn't match. 662 */ 663 if (result > 0) { 664 device_set_driver(child, 0); 665 continue; 666 } 667 668 /* 669 * A priority lower than SUCCESS, remember the 670 * best matching driver. Initialise the value 671 * of pri for the first match. 672 */ 673 if (best == 0 || result > pri) { 674 best = dl; 675 pri = result; 676 continue; 677 } 678 } 679 /* 680 * If we have unambiguous match in this devclass, 681 * don't look in the parent. 682 */ 683 if (best && pri == 0) 684 break; 685 } 686 687 /* 688 * If we found a driver, change state and initialise the devclass. 689 */ 690 if (best) { 691 if (!child->devclass) 692 device_set_devclass(child, best->driver->name); 693 device_set_driver(child, best->driver); 694 if (pri < 0) { 695 /* 696 * A bit bogus. Call the probe method again to make 697 * sure that we have the right description. 698 */ 699 DEVICE_PROBE(child); 700 } 701 child->state = DS_ALIVE; 702 return(0); 703 } 704 705 return(ENXIO); 706 } 707 708 device_t 709 device_get_parent(device_t dev) 710 { 711 return dev->parent; 712 } 713 714 int 715 device_get_children(device_t dev, device_t **devlistp, int *devcountp) 716 { 717 int count; 718 device_t child; 719 device_t *list; 720 721 count = 0; 722 TAILQ_FOREACH(child, &dev->children, link) 723 count++; 724 725 list = malloc(count * sizeof(device_t), M_TEMP, M_INTWAIT | M_ZERO); 726 if (!list) 727 return(ENOMEM); 728 729 count = 0; 730 TAILQ_FOREACH(child, &dev->children, link) { 731 list[count] = child; 732 count++; 733 } 734 735 *devlistp = list; 736 *devcountp = count; 737 738 return(0); 739 } 740 741 driver_t * 742 device_get_driver(device_t dev) 743 { 744 return(dev->driver); 745 } 746 747 devclass_t 748 device_get_devclass(device_t dev) 749 { 750 return(dev->devclass); 751 } 752 753 const char * 754 device_get_name(device_t dev) 755 { 756 if (dev->devclass) 757 return devclass_get_name(dev->devclass); 758 return(NULL); 759 } 760 761 const char * 762 device_get_nameunit(device_t dev) 763 { 764 return(dev->nameunit); 765 } 766 767 int 768 device_get_unit(device_t dev) 769 { 770 return(dev->unit); 771 } 772 773 const char * 774 device_get_desc(device_t dev) 775 { 776 return(dev->desc); 777 } 778 779 uint32_t 780 device_get_flags(device_t dev) 781 { 782 return(dev->devflags); 783 } 784 785 int 786 device_print_prettyname(device_t dev) 787 { 788 const char *name = device_get_name(dev); 789 790 if (name == 0) 791 return printf("unknown: "); 792 else 793 return printf("%s%d: ", name, device_get_unit(dev)); 794 } 795 796 int 797 device_printf(device_t dev, const char * fmt, ...) 798 { 799 __va_list ap; 800 int retval; 801 802 retval = device_print_prettyname(dev); 803 __va_start(ap, fmt); 804 retval += vprintf(fmt, ap); 805 __va_end(ap); 806 return retval; 807 } 808 809 static void 810 device_set_desc_internal(device_t dev, const char* desc, int copy) 811 { 812 if (dev->desc && (dev->flags & DF_DESCMALLOCED)) { 813 free(dev->desc, M_BUS); 814 dev->flags &= ~DF_DESCMALLOCED; 815 dev->desc = NULL; 816 } 817 818 if (copy && desc) { 819 dev->desc = malloc(strlen(desc) + 1, M_BUS, M_INTWAIT); 820 if (dev->desc) { 821 strcpy(dev->desc, desc); 822 dev->flags |= DF_DESCMALLOCED; 823 } 824 } else 825 /* Avoid a -Wcast-qual warning */ 826 dev->desc = (char *)(uintptr_t) desc; 827 828 #ifdef DEVICE_SYSCTLS 829 { 830 struct sysctl_oid *oid = &dev->oid[1]; 831 oid->oid_arg1 = dev->desc ? dev->desc : ""; 832 oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0; 833 } 834 #endif 835 } 836 837 void 838 device_set_desc(device_t dev, const char* desc) 839 { 840 device_set_desc_internal(dev, desc, FALSE); 841 } 842 843 void 844 device_set_desc_copy(device_t dev, const char* desc) 845 { 846 device_set_desc_internal(dev, desc, TRUE); 847 } 848 849 void 850 device_set_flags(device_t dev, uint32_t flags) 851 { 852 dev->devflags = flags; 853 } 854 855 void * 856 device_get_softc(device_t dev) 857 { 858 return dev->softc; 859 } 860 861 void 862 device_set_softc(device_t dev, void *softc) 863 { 864 if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC)) 865 free(dev->softc, M_BUS); 866 dev->softc = softc; 867 if (dev->softc) 868 dev->flags |= DF_EXTERNALSOFTC; 869 else 870 dev->flags &= ~DF_EXTERNALSOFTC; 871 } 872 873 void * 874 device_get_ivars(device_t dev) 875 { 876 return dev->ivars; 877 } 878 879 void 880 device_set_ivars(device_t dev, void * ivars) 881 { 882 if (!dev) 883 return; 884 885 dev->ivars = ivars; 886 } 887 888 device_state_t 889 device_get_state(device_t dev) 890 { 891 return(dev->state); 892 } 893 894 void 895 device_enable(device_t dev) 896 { 897 dev->flags |= DF_ENABLED; 898 } 899 900 void 901 device_disable(device_t dev) 902 { 903 dev->flags &= ~DF_ENABLED; 904 } 905 906 /* 907 * YYY cannot block 908 */ 909 void 910 device_busy(device_t dev) 911 { 912 if (dev->state < DS_ATTACHED) 913 panic("device_busy: called for unattached device"); 914 if (dev->busy == 0 && dev->parent) 915 device_busy(dev->parent); 916 dev->busy++; 917 dev->state = DS_BUSY; 918 } 919 920 /* 921 * YYY cannot block 922 */ 923 void 924 device_unbusy(device_t dev) 925 { 926 if (dev->state != DS_BUSY) 927 panic("device_unbusy: called for non-busy device"); 928 dev->busy--; 929 if (dev->busy == 0) { 930 if (dev->parent) 931 device_unbusy(dev->parent); 932 dev->state = DS_ATTACHED; 933 } 934 } 935 936 void 937 device_quiet(device_t dev) 938 { 939 dev->flags |= DF_QUIET; 940 } 941 942 void 943 device_verbose(device_t dev) 944 { 945 dev->flags &= ~DF_QUIET; 946 } 947 948 int 949 device_is_quiet(device_t dev) 950 { 951 return((dev->flags & DF_QUIET) != 0); 952 } 953 954 int 955 device_is_enabled(device_t dev) 956 { 957 return((dev->flags & DF_ENABLED) != 0); 958 } 959 960 int 961 device_is_alive(device_t dev) 962 { 963 return(dev->state >= DS_ALIVE); 964 } 965 966 int 967 device_is_attached(device_t dev) 968 { 969 return(dev->state >= DS_ATTACHED); 970 } 971 972 int 973 device_set_devclass(device_t dev, const char *classname) 974 { 975 devclass_t dc; 976 977 if (!classname) { 978 if (dev->devclass) 979 devclass_delete_device(dev->devclass, dev); 980 return(0); 981 } 982 983 if (dev->devclass) { 984 printf("device_set_devclass: device class already set\n"); 985 return(EINVAL); 986 } 987 988 dc = devclass_find_internal(classname, NULL, TRUE); 989 if (!dc) 990 return(ENOMEM); 991 992 return(devclass_add_device(dc, dev)); 993 } 994 995 int 996 device_set_driver(device_t dev, driver_t *driver) 997 { 998 if (dev->state >= DS_ATTACHED) 999 return(EBUSY); 1000 1001 if (dev->driver == driver) 1002 return(0); 1003 1004 if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC)) { 1005 free(dev->softc, M_BUS); 1006 dev->softc = NULL; 1007 } 1008 kobj_delete((kobj_t) dev, 0); 1009 dev->driver = driver; 1010 if (driver) { 1011 kobj_init((kobj_t) dev, (kobj_class_t) driver); 1012 if (!(dev->flags & DF_EXTERNALSOFTC)) { 1013 dev->softc = malloc(driver->size, M_BUS, 1014 M_INTWAIT | M_ZERO); 1015 if (!dev->softc) { 1016 kobj_delete((kobj_t)dev, 0); 1017 kobj_init((kobj_t) dev, &null_class); 1018 dev->driver = NULL; 1019 return(ENOMEM); 1020 } 1021 } 1022 } else 1023 kobj_init((kobj_t) dev, &null_class); 1024 return(0); 1025 } 1026 1027 int 1028 device_probe_and_attach(device_t dev) 1029 { 1030 device_t bus = dev->parent; 1031 int error = 0; 1032 int hasclass = (dev->devclass != 0); 1033 1034 if (dev->state >= DS_ALIVE) 1035 return(0); 1036 1037 if ((dev->flags & DF_ENABLED) == 0) { 1038 if (bootverbose) { 1039 device_print_prettyname(dev); 1040 printf("not probed (disabled)\n"); 1041 } 1042 return(0); 1043 } 1044 1045 error = device_probe_child(bus, dev); 1046 if (error) { 1047 if (!(dev->flags & DF_DONENOMATCH)) { 1048 BUS_PROBE_NOMATCH(bus, dev); 1049 dev->flags |= DF_DONENOMATCH; 1050 } 1051 return(error); 1052 } 1053 1054 if (!device_is_quiet(dev)) 1055 device_print_child(bus, dev); 1056 error = DEVICE_ATTACH(dev); 1057 if (!error) 1058 dev->state = DS_ATTACHED; 1059 else { 1060 printf("device_probe_and_attach: %s%d attach returned %d\n", 1061 dev->driver->name, dev->unit, error); 1062 /* Unset the class that was set in device_probe_child */ 1063 if (!hasclass) 1064 device_set_devclass(dev, 0); 1065 device_set_driver(dev, NULL); 1066 dev->state = DS_NOTPRESENT; 1067 } 1068 1069 return(error); 1070 } 1071 1072 int 1073 device_detach(device_t dev) 1074 { 1075 int error; 1076 1077 PDEBUG(("%s", DEVICENAME(dev))); 1078 if (dev->state == DS_BUSY) 1079 return(EBUSY); 1080 if (dev->state != DS_ATTACHED) 1081 return(0); 1082 1083 if ((error = DEVICE_DETACH(dev)) != 0) 1084 return(error); 1085 device_printf(dev, "detached\n"); 1086 if (dev->parent) 1087 BUS_CHILD_DETACHED(dev->parent, dev); 1088 1089 if (!(dev->flags & DF_FIXEDCLASS)) 1090 devclass_delete_device(dev->devclass, dev); 1091 1092 dev->state = DS_NOTPRESENT; 1093 device_set_driver(dev, NULL); 1094 1095 return(0); 1096 } 1097 1098 int 1099 device_shutdown(device_t dev) 1100 { 1101 if (dev->state < DS_ATTACHED) 1102 return 0; 1103 PDEBUG(("%s", DEVICENAME(dev))); 1104 return DEVICE_SHUTDOWN(dev); 1105 } 1106 1107 int 1108 device_set_unit(device_t dev, int unit) 1109 { 1110 devclass_t dc; 1111 int err; 1112 1113 dc = device_get_devclass(dev); 1114 if (unit < dc->maxunit && dc->devices[unit]) 1115 return(EBUSY); 1116 err = devclass_delete_device(dc, dev); 1117 if (err) 1118 return(err); 1119 dev->unit = unit; 1120 err = devclass_add_device(dc, dev); 1121 return(err); 1122 } 1123 1124 #ifdef DEVICE_SYSCTLS 1125 1126 /* 1127 * Sysctl nodes for devices. 1128 */ 1129 1130 SYSCTL_NODE(_hw, OID_AUTO, devices, CTLFLAG_RW, 0, "A list of all devices"); 1131 1132 static int 1133 sysctl_handle_children(SYSCTL_HANDLER_ARGS) 1134 { 1135 device_t dev = arg1; 1136 device_t child; 1137 int first = 1, error = 0; 1138 1139 TAILQ_FOREACH(child, &dev->children, link) 1140 if (child->nameunit) { 1141 if (!first) { 1142 error = SYSCTL_OUT(req, ",", 1); 1143 if (error) 1144 return error; 1145 } else 1146 first = 0; 1147 error = SYSCTL_OUT(req, child->nameunit, 1148 strlen(child->nameunit)); 1149 if (error) 1150 return(error); 1151 } 1152 1153 error = SYSCTL_OUT(req, "", 1); 1154 1155 return(error); 1156 } 1157 1158 static int 1159 sysctl_handle_state(SYSCTL_HANDLER_ARGS) 1160 { 1161 device_t dev = arg1; 1162 1163 switch (dev->state) { 1164 case DS_NOTPRESENT: 1165 return SYSCTL_OUT(req, "notpresent", sizeof("notpresent")); 1166 case DS_ALIVE: 1167 return SYSCTL_OUT(req, "alive", sizeof("alive")); 1168 case DS_ATTACHED: 1169 return SYSCTL_OUT(req, "attached", sizeof("attached")); 1170 case DS_BUSY: 1171 return SYSCTL_OUT(req, "busy", sizeof("busy")); 1172 default: 1173 return (0); 1174 } 1175 } 1176 1177 static void 1178 device_register_oids(device_t dev) 1179 { 1180 struct sysctl_oid* oid; 1181 1182 oid = &dev->oid[0]; 1183 bzero(oid, sizeof(*oid)); 1184 oid->oid_parent = &sysctl__hw_devices_children; 1185 oid->oid_number = OID_AUTO; 1186 oid->oid_kind = CTLTYPE_NODE | CTLFLAG_RW; 1187 oid->oid_arg1 = &dev->oidlist[0]; 1188 oid->oid_arg2 = 0; 1189 oid->oid_name = dev->nameunit; 1190 oid->oid_handler = 0; 1191 oid->oid_fmt = "N"; 1192 SLIST_INIT(&dev->oidlist[0]); 1193 sysctl_register_oid(oid); 1194 1195 oid = &dev->oid[1]; 1196 bzero(oid, sizeof(*oid)); 1197 oid->oid_parent = &dev->oidlist[0]; 1198 oid->oid_number = OID_AUTO; 1199 oid->oid_kind = CTLTYPE_STRING | CTLFLAG_RD; 1200 oid->oid_arg1 = dev->desc ? dev->desc : ""; 1201 oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0; 1202 oid->oid_name = "desc"; 1203 oid->oid_handler = sysctl_handle_string; 1204 oid->oid_fmt = "A"; 1205 sysctl_register_oid(oid); 1206 1207 oid = &dev->oid[2]; 1208 bzero(oid, sizeof(*oid)); 1209 oid->oid_parent = &dev->oidlist[0]; 1210 oid->oid_number = OID_AUTO; 1211 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD; 1212 oid->oid_arg1 = dev; 1213 oid->oid_arg2 = 0; 1214 oid->oid_name = "children"; 1215 oid->oid_handler = sysctl_handle_children; 1216 oid->oid_fmt = "A"; 1217 sysctl_register_oid(oid); 1218 1219 oid = &dev->oid[3]; 1220 bzero(oid, sizeof(*oid)); 1221 oid->oid_parent = &dev->oidlist[0]; 1222 oid->oid_number = OID_AUTO; 1223 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD; 1224 oid->oid_arg1 = dev; 1225 oid->oid_arg2 = 0; 1226 oid->oid_name = "state"; 1227 oid->oid_handler = sysctl_handle_state; 1228 oid->oid_fmt = "A"; 1229 sysctl_register_oid(oid); 1230 } 1231 1232 static void 1233 device_unregister_oids(device_t dev) 1234 { 1235 sysctl_unregister_oid(&dev->oid[0]); 1236 sysctl_unregister_oid(&dev->oid[1]); 1237 sysctl_unregister_oid(&dev->oid[2]); 1238 } 1239 1240 #endif 1241 1242 /*======================================*/ 1243 /* 1244 * Access functions for device resources. 1245 */ 1246 1247 /* Supplied by config(8) in ioconf.c */ 1248 extern struct config_device config_devtab[]; 1249 extern int devtab_count; 1250 1251 /* Runtime version */ 1252 struct config_device *devtab = config_devtab; 1253 1254 static int 1255 resource_new_name(const char *name, int unit) 1256 { 1257 struct config_device *new; 1258 1259 new = malloc((devtab_count + 1) * sizeof(*new), M_TEMP, 1260 M_INTWAIT | M_ZERO); 1261 if (new == NULL) 1262 return(-1); 1263 if (devtab && devtab_count > 0) 1264 bcopy(devtab, new, devtab_count * sizeof(*new)); 1265 new[devtab_count].name = malloc(strlen(name) + 1, M_TEMP, M_INTWAIT); 1266 if (new[devtab_count].name == NULL) { 1267 free(new, M_TEMP); 1268 return(-1); 1269 } 1270 strcpy(new[devtab_count].name, name); 1271 new[devtab_count].unit = unit; 1272 new[devtab_count].resource_count = 0; 1273 new[devtab_count].resources = NULL; 1274 if (devtab && devtab != config_devtab) 1275 free(devtab, M_TEMP); 1276 devtab = new; 1277 return devtab_count++; 1278 } 1279 1280 static int 1281 resource_new_resname(int j, const char *resname, resource_type type) 1282 { 1283 struct config_resource *new; 1284 int i; 1285 1286 i = devtab[j].resource_count; 1287 new = malloc((i + 1) * sizeof(*new), M_TEMP, M_INTWAIT | M_ZERO); 1288 if (new == NULL) 1289 return(-1); 1290 if (devtab[j].resources && i > 0) 1291 bcopy(devtab[j].resources, new, i * sizeof(*new)); 1292 new[i].name = malloc(strlen(resname) + 1, M_TEMP, M_INTWAIT); 1293 if (new[i].name == NULL) { 1294 free(new, M_TEMP); 1295 return(-1); 1296 } 1297 strcpy(new[i].name, resname); 1298 new[i].type = type; 1299 if (devtab[j].resources) 1300 free(devtab[j].resources, M_TEMP); 1301 devtab[j].resources = new; 1302 devtab[j].resource_count = i + 1; 1303 return(i); 1304 } 1305 1306 static int 1307 resource_match_string(int i, const char *resname, const char *value) 1308 { 1309 int j; 1310 struct config_resource *res; 1311 1312 for (j = 0, res = devtab[i].resources; 1313 j < devtab[i].resource_count; j++, res++) 1314 if (!strcmp(res->name, resname) 1315 && res->type == RES_STRING 1316 && !strcmp(res->u.stringval, value)) 1317 return(j); 1318 return(-1); 1319 } 1320 1321 static int 1322 resource_find(const char *name, int unit, const char *resname, 1323 struct config_resource **result) 1324 { 1325 int i, j; 1326 struct config_resource *res; 1327 1328 /* 1329 * First check specific instances, then generic. 1330 */ 1331 for (i = 0; i < devtab_count; i++) { 1332 if (devtab[i].unit < 0) 1333 continue; 1334 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1335 res = devtab[i].resources; 1336 for (j = 0; j < devtab[i].resource_count; j++, res++) 1337 if (!strcmp(res->name, resname)) { 1338 *result = res; 1339 return(0); 1340 } 1341 } 1342 } 1343 for (i = 0; i < devtab_count; i++) { 1344 if (devtab[i].unit >= 0) 1345 continue; 1346 /* XXX should this `&& devtab[i].unit == unit' be here? */ 1347 /* XXX if so, then the generic match does nothing */ 1348 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1349 res = devtab[i].resources; 1350 for (j = 0; j < devtab[i].resource_count; j++, res++) 1351 if (!strcmp(res->name, resname)) { 1352 *result = res; 1353 return(0); 1354 } 1355 } 1356 } 1357 return(ENOENT); 1358 } 1359 1360 int 1361 resource_int_value(const char *name, int unit, const char *resname, int *result) 1362 { 1363 int error; 1364 struct config_resource *res; 1365 1366 if ((error = resource_find(name, unit, resname, &res)) != 0) 1367 return(error); 1368 if (res->type != RES_INT) 1369 return(EFTYPE); 1370 *result = res->u.intval; 1371 return(0); 1372 } 1373 1374 int 1375 resource_long_value(const char *name, int unit, const char *resname, 1376 long *result) 1377 { 1378 int error; 1379 struct config_resource *res; 1380 1381 if ((error = resource_find(name, unit, resname, &res)) != 0) 1382 return(error); 1383 if (res->type != RES_LONG) 1384 return(EFTYPE); 1385 *result = res->u.longval; 1386 return(0); 1387 } 1388 1389 int 1390 resource_string_value(const char *name, int unit, const char *resname, 1391 char **result) 1392 { 1393 int error; 1394 struct config_resource *res; 1395 1396 if ((error = resource_find(name, unit, resname, &res)) != 0) 1397 return(error); 1398 if (res->type != RES_STRING) 1399 return(EFTYPE); 1400 *result = res->u.stringval; 1401 return(0); 1402 } 1403 1404 int 1405 resource_query_string(int i, const char *resname, const char *value) 1406 { 1407 if (i < 0) 1408 i = 0; 1409 else 1410 i = i + 1; 1411 for (; i < devtab_count; i++) 1412 if (resource_match_string(i, resname, value) >= 0) 1413 return(i); 1414 return(-1); 1415 } 1416 1417 int 1418 resource_locate(int i, const char *resname) 1419 { 1420 if (i < 0) 1421 i = 0; 1422 else 1423 i = i + 1; 1424 for (; i < devtab_count; i++) 1425 if (!strcmp(devtab[i].name, resname)) 1426 return(i); 1427 return(-1); 1428 } 1429 1430 int 1431 resource_count(void) 1432 { 1433 return(devtab_count); 1434 } 1435 1436 char * 1437 resource_query_name(int i) 1438 { 1439 return(devtab[i].name); 1440 } 1441 1442 int 1443 resource_query_unit(int i) 1444 { 1445 return(devtab[i].unit); 1446 } 1447 1448 static int 1449 resource_create(const char *name, int unit, const char *resname, 1450 resource_type type, struct config_resource **result) 1451 { 1452 int i, j; 1453 struct config_resource *res = NULL; 1454 1455 for (i = 0; i < devtab_count; i++) 1456 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1457 res = devtab[i].resources; 1458 break; 1459 } 1460 if (res == NULL) { 1461 i = resource_new_name(name, unit); 1462 if (i < 0) 1463 return(ENOMEM); 1464 res = devtab[i].resources; 1465 } 1466 for (j = 0; j < devtab[i].resource_count; j++, res++) 1467 if (!strcmp(res->name, resname)) { 1468 *result = res; 1469 return(0); 1470 } 1471 j = resource_new_resname(i, resname, type); 1472 if (j < 0) 1473 return(ENOMEM); 1474 res = &devtab[i].resources[j]; 1475 *result = res; 1476 return(0); 1477 } 1478 1479 int 1480 resource_set_int(const char *name, int unit, const char *resname, int value) 1481 { 1482 int error; 1483 struct config_resource *res; 1484 1485 error = resource_create(name, unit, resname, RES_INT, &res); 1486 if (error) 1487 return(error); 1488 if (res->type != RES_INT) 1489 return(EFTYPE); 1490 res->u.intval = value; 1491 return(0); 1492 } 1493 1494 int 1495 resource_set_long(const char *name, int unit, const char *resname, long value) 1496 { 1497 int error; 1498 struct config_resource *res; 1499 1500 error = resource_create(name, unit, resname, RES_LONG, &res); 1501 if (error) 1502 return(error); 1503 if (res->type != RES_LONG) 1504 return(EFTYPE); 1505 res->u.longval = value; 1506 return(0); 1507 } 1508 1509 int 1510 resource_set_string(const char *name, int unit, const char *resname, 1511 const char *value) 1512 { 1513 int error; 1514 struct config_resource *res; 1515 1516 error = resource_create(name, unit, resname, RES_STRING, &res); 1517 if (error) 1518 return(error); 1519 if (res->type != RES_STRING) 1520 return(EFTYPE); 1521 if (res->u.stringval) 1522 free(res->u.stringval, M_TEMP); 1523 res->u.stringval = malloc(strlen(value) + 1, M_TEMP, M_INTWAIT); 1524 if (res->u.stringval == NULL) 1525 return(ENOMEM); 1526 strcpy(res->u.stringval, value); 1527 return(0); 1528 } 1529 1530 static void 1531 resource_cfgload(void *dummy __unused) 1532 { 1533 struct config_resource *res, *cfgres; 1534 int i, j; 1535 int error; 1536 char *name, *resname; 1537 int unit; 1538 resource_type type; 1539 char *stringval; 1540 int config_devtab_count; 1541 1542 config_devtab_count = devtab_count; 1543 devtab = NULL; 1544 devtab_count = 0; 1545 1546 for (i = 0; i < config_devtab_count; i++) { 1547 name = config_devtab[i].name; 1548 unit = config_devtab[i].unit; 1549 1550 for (j = 0; j < config_devtab[i].resource_count; j++) { 1551 cfgres = config_devtab[i].resources; 1552 resname = cfgres[j].name; 1553 type = cfgres[j].type; 1554 error = resource_create(name, unit, resname, type, 1555 &res); 1556 if (error) { 1557 printf("create resource %s%d: error %d\n", 1558 name, unit, error); 1559 continue; 1560 } 1561 if (res->type != type) { 1562 printf("type mismatch %s%d: %d != %d\n", 1563 name, unit, res->type, type); 1564 continue; 1565 } 1566 switch (type) { 1567 case RES_INT: 1568 res->u.intval = cfgres[j].u.intval; 1569 break; 1570 case RES_LONG: 1571 res->u.longval = cfgres[j].u.longval; 1572 break; 1573 case RES_STRING: 1574 if (res->u.stringval) 1575 free(res->u.stringval, M_TEMP); 1576 stringval = cfgres[j].u.stringval; 1577 res->u.stringval = malloc(strlen(stringval) + 1, 1578 M_TEMP, M_INTWAIT); 1579 if (res->u.stringval == NULL) 1580 break; 1581 strcpy(res->u.stringval, stringval); 1582 break; 1583 default: 1584 panic("unknown resource type %d", type); 1585 } 1586 } 1587 } 1588 } 1589 SYSINIT(cfgload, SI_SUB_KMEM, SI_ORDER_ANY + 50, resource_cfgload, 0) 1590 1591 1592 /*======================================*/ 1593 /* 1594 * Some useful method implementations to make life easier for bus drivers. 1595 */ 1596 1597 void 1598 resource_list_init(struct resource_list *rl) 1599 { 1600 SLIST_INIT(rl); 1601 } 1602 1603 void 1604 resource_list_free(struct resource_list *rl) 1605 { 1606 struct resource_list_entry *rle; 1607 1608 while ((rle = SLIST_FIRST(rl)) != NULL) { 1609 if (rle->res) 1610 panic("resource_list_free: resource entry is busy"); 1611 SLIST_REMOVE_HEAD(rl, link); 1612 free(rle, M_BUS); 1613 } 1614 } 1615 1616 void 1617 resource_list_add(struct resource_list *rl, 1618 int type, int rid, 1619 u_long start, u_long end, u_long count) 1620 { 1621 struct resource_list_entry *rle; 1622 1623 rle = resource_list_find(rl, type, rid); 1624 if (rle == NULL) { 1625 rle = malloc(sizeof(struct resource_list_entry), M_BUS, 1626 M_INTWAIT); 1627 if (!rle) 1628 panic("resource_list_add: can't record entry"); 1629 SLIST_INSERT_HEAD(rl, rle, link); 1630 rle->type = type; 1631 rle->rid = rid; 1632 rle->res = NULL; 1633 } 1634 1635 if (rle->res) 1636 panic("resource_list_add: resource entry is busy"); 1637 1638 rle->start = start; 1639 rle->end = end; 1640 rle->count = count; 1641 } 1642 1643 struct resource_list_entry* 1644 resource_list_find(struct resource_list *rl, 1645 int type, int rid) 1646 { 1647 struct resource_list_entry *rle; 1648 1649 SLIST_FOREACH(rle, rl, link) 1650 if (rle->type == type && rle->rid == rid) 1651 return(rle); 1652 return(NULL); 1653 } 1654 1655 void 1656 resource_list_delete(struct resource_list *rl, 1657 int type, int rid) 1658 { 1659 struct resource_list_entry *rle = resource_list_find(rl, type, rid); 1660 1661 if (rle) { 1662 SLIST_REMOVE(rl, rle, resource_list_entry, link); 1663 free(rle, M_BUS); 1664 } 1665 } 1666 1667 struct resource * 1668 resource_list_alloc(struct resource_list *rl, 1669 device_t bus, device_t child, 1670 int type, int *rid, 1671 u_long start, u_long end, 1672 u_long count, u_int flags) 1673 { 1674 struct resource_list_entry *rle = 0; 1675 int passthrough = (device_get_parent(child) != bus); 1676 int isdefault = (start == 0UL && end == ~0UL); 1677 1678 if (passthrough) { 1679 return(BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1680 type, rid, 1681 start, end, count, flags)); 1682 } 1683 1684 rle = resource_list_find(rl, type, *rid); 1685 1686 if (!rle) 1687 return(0); /* no resource of that type/rid */ 1688 if (rle->res) 1689 panic("resource_list_alloc: resource entry is busy"); 1690 1691 if (isdefault) { 1692 start = rle->start; 1693 count = max(count, rle->count); 1694 end = max(rle->end, start + count - 1); 1695 } 1696 1697 rle->res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1698 type, rid, start, end, count, flags); 1699 1700 /* 1701 * Record the new range. 1702 */ 1703 if (rle->res) { 1704 rle->start = rman_get_start(rle->res); 1705 rle->end = rman_get_end(rle->res); 1706 rle->count = count; 1707 } 1708 1709 return(rle->res); 1710 } 1711 1712 int 1713 resource_list_release(struct resource_list *rl, 1714 device_t bus, device_t child, 1715 int type, int rid, struct resource *res) 1716 { 1717 struct resource_list_entry *rle = 0; 1718 int passthrough = (device_get_parent(child) != bus); 1719 int error; 1720 1721 if (passthrough) { 1722 return(BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1723 type, rid, res)); 1724 } 1725 1726 rle = resource_list_find(rl, type, rid); 1727 1728 if (!rle) 1729 panic("resource_list_release: can't find resource"); 1730 if (!rle->res) 1731 panic("resource_list_release: resource entry is not busy"); 1732 1733 error = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1734 type, rid, res); 1735 if (error) 1736 return(error); 1737 1738 rle->res = NULL; 1739 return(0); 1740 } 1741 1742 int 1743 resource_list_print_type(struct resource_list *rl, const char *name, int type, 1744 const char *format) 1745 { 1746 struct resource_list_entry *rle; 1747 int printed, retval; 1748 1749 printed = 0; 1750 retval = 0; 1751 /* Yes, this is kinda cheating */ 1752 SLIST_FOREACH(rle, rl, link) { 1753 if (rle->type == type) { 1754 if (printed == 0) 1755 retval += printf(" %s ", name); 1756 else 1757 retval += printf(","); 1758 printed++; 1759 retval += printf(format, rle->start); 1760 if (rle->count > 1) { 1761 retval += printf("-"); 1762 retval += printf(format, rle->start + 1763 rle->count - 1); 1764 } 1765 } 1766 } 1767 return(retval); 1768 } 1769 1770 /* 1771 * Call DEVICE_IDENTIFY for each driver. 1772 */ 1773 int 1774 bus_generic_probe(device_t dev) 1775 { 1776 devclass_t dc = dev->devclass; 1777 driverlink_t dl; 1778 1779 TAILQ_FOREACH(dl, &dc->drivers, link) 1780 DEVICE_IDENTIFY(dl->driver, dev); 1781 1782 return(0); 1783 } 1784 1785 int 1786 bus_generic_attach(device_t dev) 1787 { 1788 device_t child; 1789 1790 TAILQ_FOREACH(child, &dev->children, link) 1791 device_probe_and_attach(child); 1792 1793 return(0); 1794 } 1795 1796 int 1797 bus_generic_detach(device_t dev) 1798 { 1799 device_t child; 1800 int error; 1801 1802 if (dev->state != DS_ATTACHED) 1803 return(EBUSY); 1804 1805 TAILQ_FOREACH(child, &dev->children, link) 1806 if ((error = device_detach(child)) != 0) 1807 return(error); 1808 1809 return 0; 1810 } 1811 1812 int 1813 bus_generic_shutdown(device_t dev) 1814 { 1815 device_t child; 1816 1817 TAILQ_FOREACH(child, &dev->children, link) 1818 device_shutdown(child); 1819 1820 return(0); 1821 } 1822 1823 int 1824 bus_generic_suspend(device_t dev) 1825 { 1826 int error; 1827 device_t child, child2; 1828 1829 TAILQ_FOREACH(child, &dev->children, link) { 1830 error = DEVICE_SUSPEND(child); 1831 if (error) { 1832 for (child2 = TAILQ_FIRST(&dev->children); 1833 child2 && child2 != child; 1834 child2 = TAILQ_NEXT(child2, link)) 1835 DEVICE_RESUME(child2); 1836 return(error); 1837 } 1838 } 1839 return(0); 1840 } 1841 1842 int 1843 bus_generic_resume(device_t dev) 1844 { 1845 device_t child; 1846 1847 TAILQ_FOREACH(child, &dev->children, link) 1848 DEVICE_RESUME(child); 1849 /* if resume fails, there's nothing we can usefully do... */ 1850 1851 return(0); 1852 } 1853 1854 int 1855 bus_print_child_header(device_t dev, device_t child) 1856 { 1857 int retval = 0; 1858 1859 if (device_get_desc(child)) 1860 retval += device_printf(child, "<%s>", device_get_desc(child)); 1861 else 1862 retval += printf("%s", device_get_nameunit(child)); 1863 1864 return(retval); 1865 } 1866 1867 int 1868 bus_print_child_footer(device_t dev, device_t child) 1869 { 1870 return(printf(" on %s\n", device_get_nameunit(dev))); 1871 } 1872 1873 int 1874 bus_generic_print_child(device_t dev, device_t child) 1875 { 1876 int retval = 0; 1877 1878 retval += bus_print_child_header(dev, child); 1879 retval += bus_print_child_footer(dev, child); 1880 1881 return(retval); 1882 } 1883 1884 int 1885 bus_generic_read_ivar(device_t dev, device_t child, int index, 1886 uintptr_t * result) 1887 { 1888 return(ENOENT); 1889 } 1890 1891 int 1892 bus_generic_write_ivar(device_t dev, device_t child, int index, 1893 uintptr_t value) 1894 { 1895 return(ENOENT); 1896 } 1897 1898 struct resource_list * 1899 bus_generic_get_resource_list(device_t dev, device_t child) 1900 { 1901 return(NULL); 1902 } 1903 1904 void 1905 bus_generic_driver_added(device_t dev, driver_t *driver) 1906 { 1907 device_t child; 1908 1909 DEVICE_IDENTIFY(driver, dev); 1910 TAILQ_FOREACH(child, &dev->children, link) 1911 if (child->state == DS_NOTPRESENT) 1912 device_probe_and_attach(child); 1913 } 1914 1915 int 1916 bus_generic_setup_intr(device_t dev, device_t child, struct resource *irq, 1917 int flags, driver_intr_t *intr, void *arg, 1918 void **cookiep) 1919 { 1920 /* Propagate up the bus hierarchy until someone handles it. */ 1921 if (dev->parent) 1922 return(BUS_SETUP_INTR(dev->parent, child, irq, flags, 1923 intr, arg, cookiep)); 1924 else 1925 return(EINVAL); 1926 } 1927 1928 int 1929 bus_generic_teardown_intr(device_t dev, device_t child, struct resource *irq, 1930 void *cookie) 1931 { 1932 /* Propagate up the bus hierarchy until someone handles it. */ 1933 if (dev->parent) 1934 return(BUS_TEARDOWN_INTR(dev->parent, child, irq, cookie)); 1935 else 1936 return(EINVAL); 1937 } 1938 1939 struct resource * 1940 bus_generic_alloc_resource(device_t dev, device_t child, int type, int *rid, 1941 u_long start, u_long end, u_long count, u_int flags) 1942 { 1943 /* Propagate up the bus hierarchy until someone handles it. */ 1944 if (dev->parent) 1945 return(BUS_ALLOC_RESOURCE(dev->parent, child, type, rid, 1946 start, end, count, flags)); 1947 else 1948 return(NULL); 1949 } 1950 1951 int 1952 bus_generic_release_resource(device_t dev, device_t child, int type, int rid, 1953 struct resource *r) 1954 { 1955 /* Propagate up the bus hierarchy until someone handles it. */ 1956 if (dev->parent) 1957 return(BUS_RELEASE_RESOURCE(dev->parent, child, type, rid, r)); 1958 else 1959 return(EINVAL); 1960 } 1961 1962 int 1963 bus_generic_activate_resource(device_t dev, device_t child, int type, int rid, 1964 struct resource *r) 1965 { 1966 /* Propagate up the bus hierarchy until someone handles it. */ 1967 if (dev->parent) 1968 return(BUS_ACTIVATE_RESOURCE(dev->parent, child, type, rid, r)); 1969 else 1970 return(EINVAL); 1971 } 1972 1973 int 1974 bus_generic_deactivate_resource(device_t dev, device_t child, int type, 1975 int rid, struct resource *r) 1976 { 1977 /* Propagate up the bus hierarchy until someone handles it. */ 1978 if (dev->parent) 1979 return(BUS_DEACTIVATE_RESOURCE(dev->parent, child, type, rid, 1980 r)); 1981 else 1982 return(EINVAL); 1983 } 1984 1985 int 1986 bus_generic_config_intr(device_t dev, int irq, enum intr_trigger trig, 1987 enum intr_polarity pol) 1988 { 1989 /* Propagate up the bus hierarchy until someone handles it. */ 1990 if (dev->parent) 1991 return(BUS_CONFIG_INTR(dev->parent, irq, trig, pol)); 1992 else 1993 return(EINVAL); 1994 } 1995 1996 int 1997 bus_generic_rl_get_resource(device_t dev, device_t child, int type, int rid, 1998 u_long *startp, u_long *countp) 1999 { 2000 struct resource_list *rl = NULL; 2001 struct resource_list_entry *rle = NULL; 2002 2003 rl = BUS_GET_RESOURCE_LIST(dev, child); 2004 if (!rl) 2005 return(EINVAL); 2006 2007 rle = resource_list_find(rl, type, rid); 2008 if (!rle) 2009 return(ENOENT); 2010 2011 if (startp) 2012 *startp = rle->start; 2013 if (countp) 2014 *countp = rle->count; 2015 2016 return(0); 2017 } 2018 2019 int 2020 bus_generic_rl_set_resource(device_t dev, device_t child, int type, int rid, 2021 u_long start, u_long count) 2022 { 2023 struct resource_list *rl = NULL; 2024 2025 rl = BUS_GET_RESOURCE_LIST(dev, child); 2026 if (!rl) 2027 return(EINVAL); 2028 2029 resource_list_add(rl, type, rid, start, (start + count - 1), count); 2030 2031 return(0); 2032 } 2033 2034 void 2035 bus_generic_rl_delete_resource(device_t dev, device_t child, int type, int rid) 2036 { 2037 struct resource_list *rl = NULL; 2038 2039 rl = BUS_GET_RESOURCE_LIST(dev, child); 2040 if (!rl) 2041 return; 2042 2043 resource_list_delete(rl, type, rid); 2044 } 2045 2046 int 2047 bus_generic_rl_release_resource(device_t dev, device_t child, int type, 2048 int rid, struct resource *r) 2049 { 2050 struct resource_list *rl = NULL; 2051 2052 rl = BUS_GET_RESOURCE_LIST(dev, child); 2053 if (!rl) 2054 return(EINVAL); 2055 2056 return(resource_list_release(rl, dev, child, type, rid, r)); 2057 } 2058 2059 struct resource * 2060 bus_generic_rl_alloc_resource(device_t dev, device_t child, int type, 2061 int *rid, u_long start, u_long end, u_long count, u_int flags) 2062 { 2063 struct resource_list *rl = NULL; 2064 2065 rl = BUS_GET_RESOURCE_LIST(dev, child); 2066 if (!rl) 2067 return(NULL); 2068 2069 return(resource_list_alloc(rl, dev, child, type, rid, 2070 start, end, count, flags)); 2071 } 2072 2073 int 2074 bus_generic_child_present(device_t bus, device_t child) 2075 { 2076 return(BUS_CHILD_PRESENT(device_get_parent(bus), bus)); 2077 } 2078 2079 2080 /* 2081 * Some convenience functions to make it easier for drivers to use the 2082 * resource-management functions. All these really do is hide the 2083 * indirection through the parent's method table, making for slightly 2084 * less-wordy code. In the future, it might make sense for this code 2085 * to maintain some sort of a list of resources allocated by each device. 2086 */ 2087 struct resource * 2088 bus_alloc_resource(device_t dev, int type, int *rid, u_long start, u_long end, 2089 u_long count, u_int flags) 2090 { 2091 if (dev->parent == 0) 2092 return(0); 2093 return(BUS_ALLOC_RESOURCE(dev->parent, dev, type, rid, start, end, 2094 count, flags)); 2095 } 2096 2097 int 2098 bus_activate_resource(device_t dev, int type, int rid, struct resource *r) 2099 { 2100 if (dev->parent == 0) 2101 return(EINVAL); 2102 return(BUS_ACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 2103 } 2104 2105 int 2106 bus_deactivate_resource(device_t dev, int type, int rid, struct resource *r) 2107 { 2108 if (dev->parent == 0) 2109 return(EINVAL); 2110 return(BUS_DEACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 2111 } 2112 2113 int 2114 bus_release_resource(device_t dev, int type, int rid, struct resource *r) 2115 { 2116 if (dev->parent == 0) 2117 return(EINVAL); 2118 return(BUS_RELEASE_RESOURCE(dev->parent, dev, type, rid, r)); 2119 } 2120 2121 int 2122 bus_setup_intr(device_t dev, struct resource *r, int flags, 2123 driver_intr_t handler, void *arg, void **cookiep) 2124 { 2125 if (dev->parent == 0) 2126 return(EINVAL); 2127 return(BUS_SETUP_INTR(dev->parent, dev, r, flags, handler, arg, 2128 cookiep)); 2129 } 2130 2131 int 2132 bus_teardown_intr(device_t dev, struct resource *r, void *cookie) 2133 { 2134 if (dev->parent == 0) 2135 return(EINVAL); 2136 return(BUS_TEARDOWN_INTR(dev->parent, dev, r, cookie)); 2137 } 2138 2139 int 2140 bus_set_resource(device_t dev, int type, int rid, 2141 u_long start, u_long count) 2142 { 2143 return(BUS_SET_RESOURCE(device_get_parent(dev), dev, type, rid, 2144 start, count)); 2145 } 2146 2147 int 2148 bus_get_resource(device_t dev, int type, int rid, 2149 u_long *startp, u_long *countp) 2150 { 2151 return(BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2152 startp, countp)); 2153 } 2154 2155 u_long 2156 bus_get_resource_start(device_t dev, int type, int rid) 2157 { 2158 u_long start, count; 2159 int error; 2160 2161 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2162 &start, &count); 2163 if (error) 2164 return(0); 2165 return(start); 2166 } 2167 2168 u_long 2169 bus_get_resource_count(device_t dev, int type, int rid) 2170 { 2171 u_long start, count; 2172 int error; 2173 2174 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2175 &start, &count); 2176 if (error) 2177 return(0); 2178 return(count); 2179 } 2180 2181 void 2182 bus_delete_resource(device_t dev, int type, int rid) 2183 { 2184 BUS_DELETE_RESOURCE(device_get_parent(dev), dev, type, rid); 2185 } 2186 2187 int 2188 bus_child_present(device_t child) 2189 { 2190 return (BUS_CHILD_PRESENT(device_get_parent(child), child)); 2191 } 2192 2193 int 2194 bus_child_pnpinfo_str(device_t child, char *buf, size_t buflen) 2195 { 2196 device_t parent; 2197 2198 parent = device_get_parent(child); 2199 if (parent == NULL) { 2200 *buf = '\0'; 2201 return (0); 2202 } 2203 return (BUS_CHILD_PNPINFO_STR(parent, child, buf, buflen)); 2204 } 2205 2206 int 2207 bus_child_location_str(device_t child, char *buf, size_t buflen) 2208 { 2209 device_t parent; 2210 2211 parent = device_get_parent(child); 2212 if (parent == NULL) { 2213 *buf = '\0'; 2214 return (0); 2215 } 2216 return (BUS_CHILD_LOCATION_STR(parent, child, buf, buflen)); 2217 } 2218 2219 static int 2220 root_print_child(device_t dev, device_t child) 2221 { 2222 return(0); 2223 } 2224 2225 static int 2226 root_setup_intr(device_t dev, device_t child, driver_intr_t *intr, void *arg, 2227 void **cookiep) 2228 { 2229 /* 2230 * If an interrupt mapping gets to here something bad has happened. 2231 */ 2232 panic("root_setup_intr"); 2233 } 2234 2235 /* 2236 * If we get here, assume that the device is permanant and really is 2237 * present in the system. Removable bus drivers are expected to intercept 2238 * this call long before it gets here. We return -1 so that drivers that 2239 * really care can check vs -1 or some ERRNO returned higher in the food 2240 * chain. 2241 */ 2242 static int 2243 root_child_present(device_t dev, device_t child) 2244 { 2245 return(-1); 2246 } 2247 2248 /* 2249 * XXX NOTE! other defaults may be set in bus_if.m 2250 */ 2251 static kobj_method_t root_methods[] = { 2252 /* Device interface */ 2253 KOBJMETHOD(device_shutdown, bus_generic_shutdown), 2254 KOBJMETHOD(device_suspend, bus_generic_suspend), 2255 KOBJMETHOD(device_resume, bus_generic_resume), 2256 2257 /* Bus interface */ 2258 KOBJMETHOD(bus_print_child, root_print_child), 2259 KOBJMETHOD(bus_read_ivar, bus_generic_read_ivar), 2260 KOBJMETHOD(bus_write_ivar, bus_generic_write_ivar), 2261 KOBJMETHOD(bus_setup_intr, root_setup_intr), 2262 KOBJMETHOD(bus_child_present, root_child_present), 2263 2264 { 0, 0 } 2265 }; 2266 2267 static driver_t root_driver = { 2268 "root", 2269 root_methods, 2270 1, /* no softc */ 2271 }; 2272 2273 device_t root_bus; 2274 devclass_t root_devclass; 2275 2276 static int 2277 root_bus_module_handler(module_t mod, int what, void* arg) 2278 { 2279 switch (what) { 2280 case MOD_LOAD: 2281 root_bus = make_device(NULL, "root", 0); 2282 root_bus->desc = "System root bus"; 2283 kobj_init((kobj_t) root_bus, (kobj_class_t) &root_driver); 2284 root_bus->driver = &root_driver; 2285 root_bus->state = DS_ATTACHED; 2286 root_devclass = devclass_find_internal("root", NULL, FALSE); 2287 return(0); 2288 2289 case MOD_SHUTDOWN: 2290 device_shutdown(root_bus); 2291 return(0); 2292 default: 2293 return(0); 2294 } 2295 } 2296 2297 static moduledata_t root_bus_mod = { 2298 "rootbus", 2299 root_bus_module_handler, 2300 0 2301 }; 2302 DECLARE_MODULE(rootbus, root_bus_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 2303 2304 void 2305 root_bus_configure(void) 2306 { 2307 device_t dev; 2308 2309 PDEBUG((".")); 2310 2311 TAILQ_FOREACH(dev, &root_bus->children, link) 2312 device_probe_and_attach(dev); 2313 } 2314 2315 int 2316 driver_module_handler(module_t mod, int what, void *arg) 2317 { 2318 int error; 2319 struct driver_module_data *dmd; 2320 devclass_t bus_devclass; 2321 kobj_class_t driver; 2322 const char *parentname; 2323 2324 dmd = (struct driver_module_data *)arg; 2325 bus_devclass = devclass_find_internal(dmd->dmd_busname, NULL, TRUE); 2326 error = 0; 2327 2328 switch (what) { 2329 case MOD_LOAD: 2330 if (dmd->dmd_chainevh) 2331 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2332 2333 driver = dmd->dmd_driver; 2334 PDEBUG(("Loading module: driver %s on bus %s", 2335 DRIVERNAME(driver), dmd->dmd_busname)); 2336 error = devclass_add_driver(bus_devclass, driver); 2337 if (error) 2338 break; 2339 2340 /* 2341 * If the driver has any base classes, make the 2342 * devclass inherit from the devclass of the driver's 2343 * first base class. This will allow the system to 2344 * search for drivers in both devclasses for children 2345 * of a device using this driver. 2346 */ 2347 if (driver->baseclasses) 2348 parentname = driver->baseclasses[0]->name; 2349 else 2350 parentname = NULL; 2351 *dmd->dmd_devclass = devclass_find_internal(driver->name, 2352 parentname, TRUE); 2353 break; 2354 2355 case MOD_UNLOAD: 2356 PDEBUG(("Unloading module: driver %s from bus %s", 2357 DRIVERNAME(dmd->dmd_driver), dmd->dmd_busname)); 2358 error = devclass_delete_driver(bus_devclass, dmd->dmd_driver); 2359 2360 if (!error && dmd->dmd_chainevh) 2361 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2362 break; 2363 } 2364 2365 return (error); 2366 } 2367 2368 #ifdef BUS_DEBUG 2369 2370 /* 2371 * The _short versions avoid iteration by not calling anything that prints 2372 * more than oneliners. I love oneliners. 2373 */ 2374 2375 static void 2376 print_device_short(device_t dev, int indent) 2377 { 2378 if (!dev) 2379 return; 2380 2381 indentprintf(("device %d: <%s> %sparent,%schildren,%s%s%s%s,%sivars,%ssoftc,busy=%d\n", 2382 dev->unit, dev->desc, 2383 (dev->parent? "":"no "), 2384 (TAILQ_EMPTY(&dev->children)? "no ":""), 2385 (dev->flags&DF_ENABLED? "enabled,":"disabled,"), 2386 (dev->flags&DF_FIXEDCLASS? "fixed,":""), 2387 (dev->flags&DF_WILDCARD? "wildcard,":""), 2388 (dev->flags&DF_DESCMALLOCED? "descmalloced,":""), 2389 (dev->ivars? "":"no "), 2390 (dev->softc? "":"no "), 2391 dev->busy)); 2392 } 2393 2394 static void 2395 print_device(device_t dev, int indent) 2396 { 2397 if (!dev) 2398 return; 2399 2400 print_device_short(dev, indent); 2401 2402 indentprintf(("Parent:\n")); 2403 print_device_short(dev->parent, indent+1); 2404 indentprintf(("Driver:\n")); 2405 print_driver_short(dev->driver, indent+1); 2406 indentprintf(("Devclass:\n")); 2407 print_devclass_short(dev->devclass, indent+1); 2408 } 2409 2410 /* 2411 * Print the device and all its children (indented). 2412 */ 2413 void 2414 print_device_tree_short(device_t dev, int indent) 2415 { 2416 device_t child; 2417 2418 if (!dev) 2419 return; 2420 2421 print_device_short(dev, indent); 2422 2423 TAILQ_FOREACH(child, &dev->children, link) 2424 print_device_tree_short(child, indent+1); 2425 } 2426 2427 /* 2428 * Print the device and all its children (indented). 2429 */ 2430 void 2431 print_device_tree(device_t dev, int indent) 2432 { 2433 device_t child; 2434 2435 if (!dev) 2436 return; 2437 2438 print_device(dev, indent); 2439 2440 TAILQ_FOREACH(child, &dev->children, link) 2441 print_device_tree(child, indent+1); 2442 } 2443 2444 static void 2445 print_driver_short(driver_t *driver, int indent) 2446 { 2447 if (!driver) 2448 return; 2449 2450 indentprintf(("driver %s: softc size = %d\n", 2451 driver->name, driver->size)); 2452 } 2453 2454 static void 2455 print_driver(driver_t *driver, int indent) 2456 { 2457 if (!driver) 2458 return; 2459 2460 print_driver_short(driver, indent); 2461 } 2462 2463 2464 static void 2465 print_driver_list(driver_list_t drivers, int indent) 2466 { 2467 driverlink_t driver; 2468 2469 TAILQ_FOREACH(driver, &drivers, link) 2470 print_driver(driver->driver, indent); 2471 } 2472 2473 static void 2474 print_devclass_short(devclass_t dc, int indent) 2475 { 2476 if (!dc) 2477 return; 2478 2479 indentprintf(("devclass %s: max units = %d\n", dc->name, dc->maxunit)); 2480 } 2481 2482 static void 2483 print_devclass(devclass_t dc, int indent) 2484 { 2485 int i; 2486 2487 if (!dc) 2488 return; 2489 2490 print_devclass_short(dc, indent); 2491 indentprintf(("Drivers:\n")); 2492 print_driver_list(dc->drivers, indent+1); 2493 2494 indentprintf(("Devices:\n")); 2495 for (i = 0; i < dc->maxunit; i++) 2496 if (dc->devices[i]) 2497 print_device(dc->devices[i], indent+1); 2498 } 2499 2500 void 2501 print_devclass_list_short(void) 2502 { 2503 devclass_t dc; 2504 2505 printf("Short listing of devclasses, drivers & devices:\n"); 2506 TAILQ_FOREACH(dc, &devclasses, link) { 2507 print_devclass_short(dc, 0); 2508 } 2509 } 2510 2511 void 2512 print_devclass_list(void) 2513 { 2514 devclass_t dc; 2515 2516 printf("Full listing of devclasses, drivers & devices:\n"); 2517 TAILQ_FOREACH(dc, &devclasses, link) { 2518 print_devclass(dc, 0); 2519 } 2520 } 2521 2522 #endif 2523 2524 /* 2525 * Check to see if a device is disabled via a disabled hint. 2526 */ 2527 int 2528 resource_disabled(const char *name, int unit) 2529 { 2530 int error, value; 2531 2532 error = resource_int_value(name, unit, "disabled", &value); 2533 if (error) 2534 return(0); 2535 return(value); 2536 } 2537