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 1.24 2005/02/17 13:59:36 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: ", __func__, __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 /* 1055 * Output the exact device chain prior to the attach in case the 1056 * system locks up during attach, and generate the full info after 1057 * the attach so correct irq and other information is displayed. 1058 */ 1059 if (bootverbose && !device_is_quiet(dev)) { 1060 device_t tmp; 1061 1062 printf("%s", device_get_nameunit(dev)); 1063 for (tmp = dev->parent; tmp; tmp = tmp->parent) { 1064 const char *desc; 1065 1066 if ((desc = device_get_desc(tmp)) != NULL) 1067 printf(".%s[%s]", device_get_nameunit(tmp), desc); 1068 else 1069 printf(".%s", device_get_nameunit(tmp)); 1070 } 1071 printf("\n"); 1072 } 1073 if (!device_is_quiet(dev)) 1074 device_print_child(bus, dev); 1075 error = DEVICE_ATTACH(dev); 1076 if (error == 0) { 1077 dev->state = DS_ATTACHED; 1078 if (bootverbose && !device_is_quiet(dev)) 1079 device_print_child(bus, dev); 1080 } else { 1081 printf("device_probe_and_attach: %s%d attach returned %d\n", 1082 dev->driver->name, dev->unit, error); 1083 /* Unset the class that was set in device_probe_child */ 1084 if (!hasclass) 1085 device_set_devclass(dev, 0); 1086 device_set_driver(dev, NULL); 1087 dev->state = DS_NOTPRESENT; 1088 } 1089 1090 return(error); 1091 } 1092 1093 int 1094 device_detach(device_t dev) 1095 { 1096 int error; 1097 1098 PDEBUG(("%s", DEVICENAME(dev))); 1099 if (dev->state == DS_BUSY) 1100 return(EBUSY); 1101 if (dev->state != DS_ATTACHED) 1102 return(0); 1103 1104 if ((error = DEVICE_DETACH(dev)) != 0) 1105 return(error); 1106 device_printf(dev, "detached\n"); 1107 if (dev->parent) 1108 BUS_CHILD_DETACHED(dev->parent, dev); 1109 1110 if (!(dev->flags & DF_FIXEDCLASS)) 1111 devclass_delete_device(dev->devclass, dev); 1112 1113 dev->state = DS_NOTPRESENT; 1114 device_set_driver(dev, NULL); 1115 1116 return(0); 1117 } 1118 1119 int 1120 device_shutdown(device_t dev) 1121 { 1122 if (dev->state < DS_ATTACHED) 1123 return 0; 1124 PDEBUG(("%s", DEVICENAME(dev))); 1125 return DEVICE_SHUTDOWN(dev); 1126 } 1127 1128 int 1129 device_set_unit(device_t dev, int unit) 1130 { 1131 devclass_t dc; 1132 int err; 1133 1134 dc = device_get_devclass(dev); 1135 if (unit < dc->maxunit && dc->devices[unit]) 1136 return(EBUSY); 1137 err = devclass_delete_device(dc, dev); 1138 if (err) 1139 return(err); 1140 dev->unit = unit; 1141 err = devclass_add_device(dc, dev); 1142 return(err); 1143 } 1144 1145 #ifdef DEVICE_SYSCTLS 1146 1147 /* 1148 * Sysctl nodes for devices. 1149 */ 1150 1151 SYSCTL_NODE(_hw, OID_AUTO, devices, CTLFLAG_RW, 0, "A list of all devices"); 1152 1153 static int 1154 sysctl_handle_children(SYSCTL_HANDLER_ARGS) 1155 { 1156 device_t dev = arg1; 1157 device_t child; 1158 int first = 1, error = 0; 1159 1160 TAILQ_FOREACH(child, &dev->children, link) 1161 if (child->nameunit) { 1162 if (!first) { 1163 error = SYSCTL_OUT(req, ",", 1); 1164 if (error) 1165 return error; 1166 } else 1167 first = 0; 1168 error = SYSCTL_OUT(req, child->nameunit, 1169 strlen(child->nameunit)); 1170 if (error) 1171 return(error); 1172 } 1173 1174 error = SYSCTL_OUT(req, "", 1); 1175 1176 return(error); 1177 } 1178 1179 static int 1180 sysctl_handle_state(SYSCTL_HANDLER_ARGS) 1181 { 1182 device_t dev = arg1; 1183 1184 switch (dev->state) { 1185 case DS_NOTPRESENT: 1186 return SYSCTL_OUT(req, "notpresent", sizeof("notpresent")); 1187 case DS_ALIVE: 1188 return SYSCTL_OUT(req, "alive", sizeof("alive")); 1189 case DS_ATTACHED: 1190 return SYSCTL_OUT(req, "attached", sizeof("attached")); 1191 case DS_BUSY: 1192 return SYSCTL_OUT(req, "busy", sizeof("busy")); 1193 default: 1194 return (0); 1195 } 1196 } 1197 1198 static void 1199 device_register_oids(device_t dev) 1200 { 1201 struct sysctl_oid* oid; 1202 1203 oid = &dev->oid[0]; 1204 bzero(oid, sizeof(*oid)); 1205 oid->oid_parent = &sysctl__hw_devices_children; 1206 oid->oid_number = OID_AUTO; 1207 oid->oid_kind = CTLTYPE_NODE | CTLFLAG_RW; 1208 oid->oid_arg1 = &dev->oidlist[0]; 1209 oid->oid_arg2 = 0; 1210 oid->oid_name = dev->nameunit; 1211 oid->oid_handler = 0; 1212 oid->oid_fmt = "N"; 1213 SLIST_INIT(&dev->oidlist[0]); 1214 sysctl_register_oid(oid); 1215 1216 oid = &dev->oid[1]; 1217 bzero(oid, sizeof(*oid)); 1218 oid->oid_parent = &dev->oidlist[0]; 1219 oid->oid_number = OID_AUTO; 1220 oid->oid_kind = CTLTYPE_STRING | CTLFLAG_RD; 1221 oid->oid_arg1 = dev->desc ? dev->desc : ""; 1222 oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0; 1223 oid->oid_name = "desc"; 1224 oid->oid_handler = sysctl_handle_string; 1225 oid->oid_fmt = "A"; 1226 sysctl_register_oid(oid); 1227 1228 oid = &dev->oid[2]; 1229 bzero(oid, sizeof(*oid)); 1230 oid->oid_parent = &dev->oidlist[0]; 1231 oid->oid_number = OID_AUTO; 1232 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD; 1233 oid->oid_arg1 = dev; 1234 oid->oid_arg2 = 0; 1235 oid->oid_name = "children"; 1236 oid->oid_handler = sysctl_handle_children; 1237 oid->oid_fmt = "A"; 1238 sysctl_register_oid(oid); 1239 1240 oid = &dev->oid[3]; 1241 bzero(oid, sizeof(*oid)); 1242 oid->oid_parent = &dev->oidlist[0]; 1243 oid->oid_number = OID_AUTO; 1244 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD; 1245 oid->oid_arg1 = dev; 1246 oid->oid_arg2 = 0; 1247 oid->oid_name = "state"; 1248 oid->oid_handler = sysctl_handle_state; 1249 oid->oid_fmt = "A"; 1250 sysctl_register_oid(oid); 1251 } 1252 1253 static void 1254 device_unregister_oids(device_t dev) 1255 { 1256 sysctl_unregister_oid(&dev->oid[0]); 1257 sysctl_unregister_oid(&dev->oid[1]); 1258 sysctl_unregister_oid(&dev->oid[2]); 1259 } 1260 1261 #endif 1262 1263 /*======================================*/ 1264 /* 1265 * Access functions for device resources. 1266 */ 1267 1268 /* Supplied by config(8) in ioconf.c */ 1269 extern struct config_device config_devtab[]; 1270 extern int devtab_count; 1271 1272 /* Runtime version */ 1273 struct config_device *devtab = config_devtab; 1274 1275 static int 1276 resource_new_name(const char *name, int unit) 1277 { 1278 struct config_device *new; 1279 1280 new = malloc((devtab_count + 1) * sizeof(*new), M_TEMP, 1281 M_INTWAIT | M_ZERO); 1282 if (new == NULL) 1283 return(-1); 1284 if (devtab && devtab_count > 0) 1285 bcopy(devtab, new, devtab_count * sizeof(*new)); 1286 new[devtab_count].name = malloc(strlen(name) + 1, M_TEMP, M_INTWAIT); 1287 if (new[devtab_count].name == NULL) { 1288 free(new, M_TEMP); 1289 return(-1); 1290 } 1291 strcpy(new[devtab_count].name, name); 1292 new[devtab_count].unit = unit; 1293 new[devtab_count].resource_count = 0; 1294 new[devtab_count].resources = NULL; 1295 if (devtab && devtab != config_devtab) 1296 free(devtab, M_TEMP); 1297 devtab = new; 1298 return devtab_count++; 1299 } 1300 1301 static int 1302 resource_new_resname(int j, const char *resname, resource_type type) 1303 { 1304 struct config_resource *new; 1305 int i; 1306 1307 i = devtab[j].resource_count; 1308 new = malloc((i + 1) * sizeof(*new), M_TEMP, M_INTWAIT | M_ZERO); 1309 if (new == NULL) 1310 return(-1); 1311 if (devtab[j].resources && i > 0) 1312 bcopy(devtab[j].resources, new, i * sizeof(*new)); 1313 new[i].name = malloc(strlen(resname) + 1, M_TEMP, M_INTWAIT); 1314 if (new[i].name == NULL) { 1315 free(new, M_TEMP); 1316 return(-1); 1317 } 1318 strcpy(new[i].name, resname); 1319 new[i].type = type; 1320 if (devtab[j].resources) 1321 free(devtab[j].resources, M_TEMP); 1322 devtab[j].resources = new; 1323 devtab[j].resource_count = i + 1; 1324 return(i); 1325 } 1326 1327 static int 1328 resource_match_string(int i, const char *resname, const char *value) 1329 { 1330 int j; 1331 struct config_resource *res; 1332 1333 for (j = 0, res = devtab[i].resources; 1334 j < devtab[i].resource_count; j++, res++) 1335 if (!strcmp(res->name, resname) 1336 && res->type == RES_STRING 1337 && !strcmp(res->u.stringval, value)) 1338 return(j); 1339 return(-1); 1340 } 1341 1342 static int 1343 resource_find(const char *name, int unit, const char *resname, 1344 struct config_resource **result) 1345 { 1346 int i, j; 1347 struct config_resource *res; 1348 1349 /* 1350 * First check specific instances, then generic. 1351 */ 1352 for (i = 0; i < devtab_count; i++) { 1353 if (devtab[i].unit < 0) 1354 continue; 1355 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1356 res = devtab[i].resources; 1357 for (j = 0; j < devtab[i].resource_count; j++, res++) 1358 if (!strcmp(res->name, resname)) { 1359 *result = res; 1360 return(0); 1361 } 1362 } 1363 } 1364 for (i = 0; i < devtab_count; i++) { 1365 if (devtab[i].unit >= 0) 1366 continue; 1367 /* XXX should this `&& devtab[i].unit == unit' be here? */ 1368 /* XXX if so, then the generic match does nothing */ 1369 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1370 res = devtab[i].resources; 1371 for (j = 0; j < devtab[i].resource_count; j++, res++) 1372 if (!strcmp(res->name, resname)) { 1373 *result = res; 1374 return(0); 1375 } 1376 } 1377 } 1378 return(ENOENT); 1379 } 1380 1381 int 1382 resource_int_value(const char *name, int unit, const char *resname, int *result) 1383 { 1384 int error; 1385 struct config_resource *res; 1386 1387 if ((error = resource_find(name, unit, resname, &res)) != 0) 1388 return(error); 1389 if (res->type != RES_INT) 1390 return(EFTYPE); 1391 *result = res->u.intval; 1392 return(0); 1393 } 1394 1395 int 1396 resource_long_value(const char *name, int unit, const char *resname, 1397 long *result) 1398 { 1399 int error; 1400 struct config_resource *res; 1401 1402 if ((error = resource_find(name, unit, resname, &res)) != 0) 1403 return(error); 1404 if (res->type != RES_LONG) 1405 return(EFTYPE); 1406 *result = res->u.longval; 1407 return(0); 1408 } 1409 1410 int 1411 resource_string_value(const char *name, int unit, const char *resname, 1412 char **result) 1413 { 1414 int error; 1415 struct config_resource *res; 1416 1417 if ((error = resource_find(name, unit, resname, &res)) != 0) 1418 return(error); 1419 if (res->type != RES_STRING) 1420 return(EFTYPE); 1421 *result = res->u.stringval; 1422 return(0); 1423 } 1424 1425 int 1426 resource_query_string(int i, const char *resname, const char *value) 1427 { 1428 if (i < 0) 1429 i = 0; 1430 else 1431 i = i + 1; 1432 for (; i < devtab_count; i++) 1433 if (resource_match_string(i, resname, value) >= 0) 1434 return(i); 1435 return(-1); 1436 } 1437 1438 int 1439 resource_locate(int i, const char *resname) 1440 { 1441 if (i < 0) 1442 i = 0; 1443 else 1444 i = i + 1; 1445 for (; i < devtab_count; i++) 1446 if (!strcmp(devtab[i].name, resname)) 1447 return(i); 1448 return(-1); 1449 } 1450 1451 int 1452 resource_count(void) 1453 { 1454 return(devtab_count); 1455 } 1456 1457 char * 1458 resource_query_name(int i) 1459 { 1460 return(devtab[i].name); 1461 } 1462 1463 int 1464 resource_query_unit(int i) 1465 { 1466 return(devtab[i].unit); 1467 } 1468 1469 static int 1470 resource_create(const char *name, int unit, const char *resname, 1471 resource_type type, struct config_resource **result) 1472 { 1473 int i, j; 1474 struct config_resource *res = NULL; 1475 1476 for (i = 0; i < devtab_count; i++) 1477 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1478 res = devtab[i].resources; 1479 break; 1480 } 1481 if (res == NULL) { 1482 i = resource_new_name(name, unit); 1483 if (i < 0) 1484 return(ENOMEM); 1485 res = devtab[i].resources; 1486 } 1487 for (j = 0; j < devtab[i].resource_count; j++, res++) 1488 if (!strcmp(res->name, resname)) { 1489 *result = res; 1490 return(0); 1491 } 1492 j = resource_new_resname(i, resname, type); 1493 if (j < 0) 1494 return(ENOMEM); 1495 res = &devtab[i].resources[j]; 1496 *result = res; 1497 return(0); 1498 } 1499 1500 int 1501 resource_set_int(const char *name, int unit, const char *resname, int value) 1502 { 1503 int error; 1504 struct config_resource *res; 1505 1506 error = resource_create(name, unit, resname, RES_INT, &res); 1507 if (error) 1508 return(error); 1509 if (res->type != RES_INT) 1510 return(EFTYPE); 1511 res->u.intval = value; 1512 return(0); 1513 } 1514 1515 int 1516 resource_set_long(const char *name, int unit, const char *resname, long value) 1517 { 1518 int error; 1519 struct config_resource *res; 1520 1521 error = resource_create(name, unit, resname, RES_LONG, &res); 1522 if (error) 1523 return(error); 1524 if (res->type != RES_LONG) 1525 return(EFTYPE); 1526 res->u.longval = value; 1527 return(0); 1528 } 1529 1530 int 1531 resource_set_string(const char *name, int unit, const char *resname, 1532 const char *value) 1533 { 1534 int error; 1535 struct config_resource *res; 1536 1537 error = resource_create(name, unit, resname, RES_STRING, &res); 1538 if (error) 1539 return(error); 1540 if (res->type != RES_STRING) 1541 return(EFTYPE); 1542 if (res->u.stringval) 1543 free(res->u.stringval, M_TEMP); 1544 res->u.stringval = malloc(strlen(value) + 1, M_TEMP, M_INTWAIT); 1545 if (res->u.stringval == NULL) 1546 return(ENOMEM); 1547 strcpy(res->u.stringval, value); 1548 return(0); 1549 } 1550 1551 static void 1552 resource_cfgload(void *dummy __unused) 1553 { 1554 struct config_resource *res, *cfgres; 1555 int i, j; 1556 int error; 1557 char *name, *resname; 1558 int unit; 1559 resource_type type; 1560 char *stringval; 1561 int config_devtab_count; 1562 1563 config_devtab_count = devtab_count; 1564 devtab = NULL; 1565 devtab_count = 0; 1566 1567 for (i = 0; i < config_devtab_count; i++) { 1568 name = config_devtab[i].name; 1569 unit = config_devtab[i].unit; 1570 1571 for (j = 0; j < config_devtab[i].resource_count; j++) { 1572 cfgres = config_devtab[i].resources; 1573 resname = cfgres[j].name; 1574 type = cfgres[j].type; 1575 error = resource_create(name, unit, resname, type, 1576 &res); 1577 if (error) { 1578 printf("create resource %s%d: error %d\n", 1579 name, unit, error); 1580 continue; 1581 } 1582 if (res->type != type) { 1583 printf("type mismatch %s%d: %d != %d\n", 1584 name, unit, res->type, type); 1585 continue; 1586 } 1587 switch (type) { 1588 case RES_INT: 1589 res->u.intval = cfgres[j].u.intval; 1590 break; 1591 case RES_LONG: 1592 res->u.longval = cfgres[j].u.longval; 1593 break; 1594 case RES_STRING: 1595 if (res->u.stringval) 1596 free(res->u.stringval, M_TEMP); 1597 stringval = cfgres[j].u.stringval; 1598 res->u.stringval = malloc(strlen(stringval) + 1, 1599 M_TEMP, M_INTWAIT); 1600 if (res->u.stringval == NULL) 1601 break; 1602 strcpy(res->u.stringval, stringval); 1603 break; 1604 default: 1605 panic("unknown resource type %d", type); 1606 } 1607 } 1608 } 1609 } 1610 SYSINIT(cfgload, SI_SUB_KMEM, SI_ORDER_ANY + 50, resource_cfgload, 0) 1611 1612 1613 /*======================================*/ 1614 /* 1615 * Some useful method implementations to make life easier for bus drivers. 1616 */ 1617 1618 void 1619 resource_list_init(struct resource_list *rl) 1620 { 1621 SLIST_INIT(rl); 1622 } 1623 1624 void 1625 resource_list_free(struct resource_list *rl) 1626 { 1627 struct resource_list_entry *rle; 1628 1629 while ((rle = SLIST_FIRST(rl)) != NULL) { 1630 if (rle->res) 1631 panic("resource_list_free: resource entry is busy"); 1632 SLIST_REMOVE_HEAD(rl, link); 1633 free(rle, M_BUS); 1634 } 1635 } 1636 1637 void 1638 resource_list_add(struct resource_list *rl, 1639 int type, int rid, 1640 u_long start, u_long end, u_long count) 1641 { 1642 struct resource_list_entry *rle; 1643 1644 rle = resource_list_find(rl, type, rid); 1645 if (rle == NULL) { 1646 rle = malloc(sizeof(struct resource_list_entry), M_BUS, 1647 M_INTWAIT); 1648 if (!rle) 1649 panic("resource_list_add: can't record entry"); 1650 SLIST_INSERT_HEAD(rl, rle, link); 1651 rle->type = type; 1652 rle->rid = rid; 1653 rle->res = NULL; 1654 } 1655 1656 if (rle->res) 1657 panic("resource_list_add: resource entry is busy"); 1658 1659 rle->start = start; 1660 rle->end = end; 1661 rle->count = count; 1662 } 1663 1664 struct resource_list_entry* 1665 resource_list_find(struct resource_list *rl, 1666 int type, int rid) 1667 { 1668 struct resource_list_entry *rle; 1669 1670 SLIST_FOREACH(rle, rl, link) 1671 if (rle->type == type && rle->rid == rid) 1672 return(rle); 1673 return(NULL); 1674 } 1675 1676 void 1677 resource_list_delete(struct resource_list *rl, 1678 int type, int rid) 1679 { 1680 struct resource_list_entry *rle = resource_list_find(rl, type, rid); 1681 1682 if (rle) { 1683 SLIST_REMOVE(rl, rle, resource_list_entry, link); 1684 free(rle, M_BUS); 1685 } 1686 } 1687 1688 struct resource * 1689 resource_list_alloc(struct resource_list *rl, 1690 device_t bus, device_t child, 1691 int type, int *rid, 1692 u_long start, u_long end, 1693 u_long count, u_int flags) 1694 { 1695 struct resource_list_entry *rle = 0; 1696 int passthrough = (device_get_parent(child) != bus); 1697 int isdefault = (start == 0UL && end == ~0UL); 1698 1699 if (passthrough) { 1700 return(BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1701 type, rid, 1702 start, end, count, flags)); 1703 } 1704 1705 rle = resource_list_find(rl, type, *rid); 1706 1707 if (!rle) 1708 return(0); /* no resource of that type/rid */ 1709 if (rle->res) 1710 panic("resource_list_alloc: resource entry is busy"); 1711 1712 if (isdefault) { 1713 start = rle->start; 1714 count = max(count, rle->count); 1715 end = max(rle->end, start + count - 1); 1716 } 1717 1718 rle->res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1719 type, rid, start, end, count, flags); 1720 1721 /* 1722 * Record the new range. 1723 */ 1724 if (rle->res) { 1725 rle->start = rman_get_start(rle->res); 1726 rle->end = rman_get_end(rle->res); 1727 rle->count = count; 1728 } 1729 1730 return(rle->res); 1731 } 1732 1733 int 1734 resource_list_release(struct resource_list *rl, 1735 device_t bus, device_t child, 1736 int type, int rid, struct resource *res) 1737 { 1738 struct resource_list_entry *rle = 0; 1739 int passthrough = (device_get_parent(child) != bus); 1740 int error; 1741 1742 if (passthrough) { 1743 return(BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1744 type, rid, res)); 1745 } 1746 1747 rle = resource_list_find(rl, type, rid); 1748 1749 if (!rle) 1750 panic("resource_list_release: can't find resource"); 1751 if (!rle->res) 1752 panic("resource_list_release: resource entry is not busy"); 1753 1754 error = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1755 type, rid, res); 1756 if (error) 1757 return(error); 1758 1759 rle->res = NULL; 1760 return(0); 1761 } 1762 1763 int 1764 resource_list_print_type(struct resource_list *rl, const char *name, int type, 1765 const char *format) 1766 { 1767 struct resource_list_entry *rle; 1768 int printed, retval; 1769 1770 printed = 0; 1771 retval = 0; 1772 /* Yes, this is kinda cheating */ 1773 SLIST_FOREACH(rle, rl, link) { 1774 if (rle->type == type) { 1775 if (printed == 0) 1776 retval += printf(" %s ", name); 1777 else 1778 retval += printf(","); 1779 printed++; 1780 retval += printf(format, rle->start); 1781 if (rle->count > 1) { 1782 retval += printf("-"); 1783 retval += printf(format, rle->start + 1784 rle->count - 1); 1785 } 1786 } 1787 } 1788 return(retval); 1789 } 1790 1791 /* 1792 * Call DEVICE_IDENTIFY for each driver. 1793 */ 1794 int 1795 bus_generic_probe(device_t dev) 1796 { 1797 devclass_t dc = dev->devclass; 1798 driverlink_t dl; 1799 1800 TAILQ_FOREACH(dl, &dc->drivers, link) 1801 DEVICE_IDENTIFY(dl->driver, dev); 1802 1803 return(0); 1804 } 1805 1806 int 1807 bus_generic_attach(device_t dev) 1808 { 1809 device_t child; 1810 1811 TAILQ_FOREACH(child, &dev->children, link) 1812 device_probe_and_attach(child); 1813 1814 return(0); 1815 } 1816 1817 int 1818 bus_generic_detach(device_t dev) 1819 { 1820 device_t child; 1821 int error; 1822 1823 if (dev->state != DS_ATTACHED) 1824 return(EBUSY); 1825 1826 TAILQ_FOREACH(child, &dev->children, link) 1827 if ((error = device_detach(child)) != 0) 1828 return(error); 1829 1830 return 0; 1831 } 1832 1833 int 1834 bus_generic_shutdown(device_t dev) 1835 { 1836 device_t child; 1837 1838 TAILQ_FOREACH(child, &dev->children, link) 1839 device_shutdown(child); 1840 1841 return(0); 1842 } 1843 1844 int 1845 bus_generic_suspend(device_t dev) 1846 { 1847 int error; 1848 device_t child, child2; 1849 1850 TAILQ_FOREACH(child, &dev->children, link) { 1851 error = DEVICE_SUSPEND(child); 1852 if (error) { 1853 for (child2 = TAILQ_FIRST(&dev->children); 1854 child2 && child2 != child; 1855 child2 = TAILQ_NEXT(child2, link)) 1856 DEVICE_RESUME(child2); 1857 return(error); 1858 } 1859 } 1860 return(0); 1861 } 1862 1863 int 1864 bus_generic_resume(device_t dev) 1865 { 1866 device_t child; 1867 1868 TAILQ_FOREACH(child, &dev->children, link) 1869 DEVICE_RESUME(child); 1870 /* if resume fails, there's nothing we can usefully do... */ 1871 1872 return(0); 1873 } 1874 1875 int 1876 bus_print_child_header(device_t dev, device_t child) 1877 { 1878 int retval = 0; 1879 1880 if (device_get_desc(child)) 1881 retval += device_printf(child, "<%s>", device_get_desc(child)); 1882 else 1883 retval += printf("%s", device_get_nameunit(child)); 1884 if (bootverbose) { 1885 if (child->state != DS_ATTACHED) 1886 printf(" [tentative]"); 1887 else 1888 printf(" [attached!]"); 1889 } 1890 return(retval); 1891 } 1892 1893 int 1894 bus_print_child_footer(device_t dev, device_t child) 1895 { 1896 return(printf(" on %s\n", device_get_nameunit(dev))); 1897 } 1898 1899 int 1900 bus_generic_print_child(device_t dev, device_t child) 1901 { 1902 int retval = 0; 1903 1904 retval += bus_print_child_header(dev, child); 1905 retval += bus_print_child_footer(dev, child); 1906 1907 return(retval); 1908 } 1909 1910 int 1911 bus_generic_read_ivar(device_t dev, device_t child, int index, 1912 uintptr_t * result) 1913 { 1914 return(ENOENT); 1915 } 1916 1917 int 1918 bus_generic_write_ivar(device_t dev, device_t child, int index, 1919 uintptr_t value) 1920 { 1921 return(ENOENT); 1922 } 1923 1924 struct resource_list * 1925 bus_generic_get_resource_list(device_t dev, device_t child) 1926 { 1927 return(NULL); 1928 } 1929 1930 void 1931 bus_generic_driver_added(device_t dev, driver_t *driver) 1932 { 1933 device_t child; 1934 1935 DEVICE_IDENTIFY(driver, dev); 1936 TAILQ_FOREACH(child, &dev->children, link) 1937 if (child->state == DS_NOTPRESENT) 1938 device_probe_and_attach(child); 1939 } 1940 1941 int 1942 bus_generic_setup_intr(device_t dev, device_t child, struct resource *irq, 1943 int flags, driver_intr_t *intr, void *arg, 1944 void **cookiep) 1945 { 1946 /* Propagate up the bus hierarchy until someone handles it. */ 1947 if (dev->parent) 1948 return(BUS_SETUP_INTR(dev->parent, child, irq, flags, 1949 intr, arg, cookiep)); 1950 else 1951 return(EINVAL); 1952 } 1953 1954 int 1955 bus_generic_teardown_intr(device_t dev, device_t child, struct resource *irq, 1956 void *cookie) 1957 { 1958 /* Propagate up the bus hierarchy until someone handles it. */ 1959 if (dev->parent) 1960 return(BUS_TEARDOWN_INTR(dev->parent, child, irq, cookie)); 1961 else 1962 return(EINVAL); 1963 } 1964 1965 struct resource * 1966 bus_generic_alloc_resource(device_t dev, device_t child, int type, int *rid, 1967 u_long start, u_long end, u_long count, u_int flags) 1968 { 1969 /* Propagate up the bus hierarchy until someone handles it. */ 1970 if (dev->parent) 1971 return(BUS_ALLOC_RESOURCE(dev->parent, child, type, rid, 1972 start, end, count, flags)); 1973 else 1974 return(NULL); 1975 } 1976 1977 int 1978 bus_generic_release_resource(device_t dev, device_t child, int type, int rid, 1979 struct resource *r) 1980 { 1981 /* Propagate up the bus hierarchy until someone handles it. */ 1982 if (dev->parent) 1983 return(BUS_RELEASE_RESOURCE(dev->parent, child, type, rid, r)); 1984 else 1985 return(EINVAL); 1986 } 1987 1988 int 1989 bus_generic_activate_resource(device_t dev, device_t child, int type, int rid, 1990 struct resource *r) 1991 { 1992 /* Propagate up the bus hierarchy until someone handles it. */ 1993 if (dev->parent) 1994 return(BUS_ACTIVATE_RESOURCE(dev->parent, child, type, rid, r)); 1995 else 1996 return(EINVAL); 1997 } 1998 1999 int 2000 bus_generic_deactivate_resource(device_t dev, device_t child, int type, 2001 int rid, struct resource *r) 2002 { 2003 /* Propagate up the bus hierarchy until someone handles it. */ 2004 if (dev->parent) 2005 return(BUS_DEACTIVATE_RESOURCE(dev->parent, child, type, rid, 2006 r)); 2007 else 2008 return(EINVAL); 2009 } 2010 2011 int 2012 bus_generic_config_intr(device_t dev, int irq, enum intr_trigger trig, 2013 enum intr_polarity pol) 2014 { 2015 /* Propagate up the bus hierarchy until someone handles it. */ 2016 if (dev->parent) 2017 return(BUS_CONFIG_INTR(dev->parent, irq, trig, pol)); 2018 else 2019 return(EINVAL); 2020 } 2021 2022 int 2023 bus_generic_rl_get_resource(device_t dev, device_t child, int type, int rid, 2024 u_long *startp, u_long *countp) 2025 { 2026 struct resource_list *rl = NULL; 2027 struct resource_list_entry *rle = NULL; 2028 2029 rl = BUS_GET_RESOURCE_LIST(dev, child); 2030 if (!rl) 2031 return(EINVAL); 2032 2033 rle = resource_list_find(rl, type, rid); 2034 if (!rle) 2035 return(ENOENT); 2036 2037 if (startp) 2038 *startp = rle->start; 2039 if (countp) 2040 *countp = rle->count; 2041 2042 return(0); 2043 } 2044 2045 int 2046 bus_generic_rl_set_resource(device_t dev, device_t child, int type, int rid, 2047 u_long start, u_long count) 2048 { 2049 struct resource_list *rl = NULL; 2050 2051 rl = BUS_GET_RESOURCE_LIST(dev, child); 2052 if (!rl) 2053 return(EINVAL); 2054 2055 resource_list_add(rl, type, rid, start, (start + count - 1), count); 2056 2057 return(0); 2058 } 2059 2060 void 2061 bus_generic_rl_delete_resource(device_t dev, device_t child, int type, int rid) 2062 { 2063 struct resource_list *rl = NULL; 2064 2065 rl = BUS_GET_RESOURCE_LIST(dev, child); 2066 if (!rl) 2067 return; 2068 2069 resource_list_delete(rl, type, rid); 2070 } 2071 2072 int 2073 bus_generic_rl_release_resource(device_t dev, device_t child, int type, 2074 int rid, struct resource *r) 2075 { 2076 struct resource_list *rl = NULL; 2077 2078 rl = BUS_GET_RESOURCE_LIST(dev, child); 2079 if (!rl) 2080 return(EINVAL); 2081 2082 return(resource_list_release(rl, dev, child, type, rid, r)); 2083 } 2084 2085 struct resource * 2086 bus_generic_rl_alloc_resource(device_t dev, device_t child, int type, 2087 int *rid, u_long start, u_long end, u_long count, u_int flags) 2088 { 2089 struct resource_list *rl = NULL; 2090 2091 rl = BUS_GET_RESOURCE_LIST(dev, child); 2092 if (!rl) 2093 return(NULL); 2094 2095 return(resource_list_alloc(rl, dev, child, type, rid, 2096 start, end, count, flags)); 2097 } 2098 2099 int 2100 bus_generic_child_present(device_t bus, device_t child) 2101 { 2102 return(BUS_CHILD_PRESENT(device_get_parent(bus), bus)); 2103 } 2104 2105 2106 /* 2107 * Some convenience functions to make it easier for drivers to use the 2108 * resource-management functions. All these really do is hide the 2109 * indirection through the parent's method table, making for slightly 2110 * less-wordy code. In the future, it might make sense for this code 2111 * to maintain some sort of a list of resources allocated by each device. 2112 */ 2113 struct resource * 2114 bus_alloc_resource(device_t dev, int type, int *rid, u_long start, u_long end, 2115 u_long count, u_int flags) 2116 { 2117 if (dev->parent == 0) 2118 return(0); 2119 return(BUS_ALLOC_RESOURCE(dev->parent, dev, type, rid, start, end, 2120 count, flags)); 2121 } 2122 2123 int 2124 bus_activate_resource(device_t dev, int type, int rid, struct resource *r) 2125 { 2126 if (dev->parent == 0) 2127 return(EINVAL); 2128 return(BUS_ACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 2129 } 2130 2131 int 2132 bus_deactivate_resource(device_t dev, int type, int rid, struct resource *r) 2133 { 2134 if (dev->parent == 0) 2135 return(EINVAL); 2136 return(BUS_DEACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 2137 } 2138 2139 int 2140 bus_release_resource(device_t dev, int type, int rid, struct resource *r) 2141 { 2142 if (dev->parent == 0) 2143 return(EINVAL); 2144 return(BUS_RELEASE_RESOURCE(dev->parent, dev, type, rid, r)); 2145 } 2146 2147 int 2148 bus_setup_intr(device_t dev, struct resource *r, int flags, 2149 driver_intr_t handler, void *arg, void **cookiep) 2150 { 2151 if (dev->parent == 0) 2152 return(EINVAL); 2153 return(BUS_SETUP_INTR(dev->parent, dev, r, flags, handler, arg, 2154 cookiep)); 2155 } 2156 2157 int 2158 bus_teardown_intr(device_t dev, struct resource *r, void *cookie) 2159 { 2160 if (dev->parent == 0) 2161 return(EINVAL); 2162 return(BUS_TEARDOWN_INTR(dev->parent, dev, r, cookie)); 2163 } 2164 2165 int 2166 bus_set_resource(device_t dev, int type, int rid, 2167 u_long start, u_long count) 2168 { 2169 return(BUS_SET_RESOURCE(device_get_parent(dev), dev, type, rid, 2170 start, count)); 2171 } 2172 2173 int 2174 bus_get_resource(device_t dev, int type, int rid, 2175 u_long *startp, u_long *countp) 2176 { 2177 return(BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2178 startp, countp)); 2179 } 2180 2181 u_long 2182 bus_get_resource_start(device_t dev, int type, int rid) 2183 { 2184 u_long start, count; 2185 int error; 2186 2187 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2188 &start, &count); 2189 if (error) 2190 return(0); 2191 return(start); 2192 } 2193 2194 u_long 2195 bus_get_resource_count(device_t dev, int type, int rid) 2196 { 2197 u_long start, count; 2198 int error; 2199 2200 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2201 &start, &count); 2202 if (error) 2203 return(0); 2204 return(count); 2205 } 2206 2207 void 2208 bus_delete_resource(device_t dev, int type, int rid) 2209 { 2210 BUS_DELETE_RESOURCE(device_get_parent(dev), dev, type, rid); 2211 } 2212 2213 int 2214 bus_child_present(device_t child) 2215 { 2216 return (BUS_CHILD_PRESENT(device_get_parent(child), child)); 2217 } 2218 2219 int 2220 bus_child_pnpinfo_str(device_t child, char *buf, size_t buflen) 2221 { 2222 device_t parent; 2223 2224 parent = device_get_parent(child); 2225 if (parent == NULL) { 2226 *buf = '\0'; 2227 return (0); 2228 } 2229 return (BUS_CHILD_PNPINFO_STR(parent, child, buf, buflen)); 2230 } 2231 2232 int 2233 bus_child_location_str(device_t child, char *buf, size_t buflen) 2234 { 2235 device_t parent; 2236 2237 parent = device_get_parent(child); 2238 if (parent == NULL) { 2239 *buf = '\0'; 2240 return (0); 2241 } 2242 return (BUS_CHILD_LOCATION_STR(parent, child, buf, buflen)); 2243 } 2244 2245 static int 2246 root_print_child(device_t dev, device_t child) 2247 { 2248 return(0); 2249 } 2250 2251 static int 2252 root_setup_intr(device_t dev, device_t child, driver_intr_t *intr, void *arg, 2253 void **cookiep) 2254 { 2255 /* 2256 * If an interrupt mapping gets to here something bad has happened. 2257 */ 2258 panic("root_setup_intr"); 2259 } 2260 2261 /* 2262 * If we get here, assume that the device is permanant and really is 2263 * present in the system. Removable bus drivers are expected to intercept 2264 * this call long before it gets here. We return -1 so that drivers that 2265 * really care can check vs -1 or some ERRNO returned higher in the food 2266 * chain. 2267 */ 2268 static int 2269 root_child_present(device_t dev, device_t child) 2270 { 2271 return(-1); 2272 } 2273 2274 /* 2275 * XXX NOTE! other defaults may be set in bus_if.m 2276 */ 2277 static kobj_method_t root_methods[] = { 2278 /* Device interface */ 2279 KOBJMETHOD(device_shutdown, bus_generic_shutdown), 2280 KOBJMETHOD(device_suspend, bus_generic_suspend), 2281 KOBJMETHOD(device_resume, bus_generic_resume), 2282 2283 /* Bus interface */ 2284 KOBJMETHOD(bus_print_child, root_print_child), 2285 KOBJMETHOD(bus_read_ivar, bus_generic_read_ivar), 2286 KOBJMETHOD(bus_write_ivar, bus_generic_write_ivar), 2287 KOBJMETHOD(bus_setup_intr, root_setup_intr), 2288 KOBJMETHOD(bus_child_present, root_child_present), 2289 2290 { 0, 0 } 2291 }; 2292 2293 static driver_t root_driver = { 2294 "root", 2295 root_methods, 2296 1, /* no softc */ 2297 }; 2298 2299 device_t root_bus; 2300 devclass_t root_devclass; 2301 2302 static int 2303 root_bus_module_handler(module_t mod, int what, void* arg) 2304 { 2305 switch (what) { 2306 case MOD_LOAD: 2307 root_bus = make_device(NULL, "root", 0); 2308 root_bus->desc = "System root bus"; 2309 kobj_init((kobj_t) root_bus, (kobj_class_t) &root_driver); 2310 root_bus->driver = &root_driver; 2311 root_bus->state = DS_ATTACHED; 2312 root_devclass = devclass_find_internal("root", NULL, FALSE); 2313 return(0); 2314 2315 case MOD_SHUTDOWN: 2316 device_shutdown(root_bus); 2317 return(0); 2318 default: 2319 return(0); 2320 } 2321 } 2322 2323 static moduledata_t root_bus_mod = { 2324 "rootbus", 2325 root_bus_module_handler, 2326 0 2327 }; 2328 DECLARE_MODULE(rootbus, root_bus_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 2329 2330 void 2331 root_bus_configure(void) 2332 { 2333 device_t dev; 2334 2335 PDEBUG((".")); 2336 2337 TAILQ_FOREACH(dev, &root_bus->children, link) 2338 device_probe_and_attach(dev); 2339 } 2340 2341 int 2342 driver_module_handler(module_t mod, int what, void *arg) 2343 { 2344 int error; 2345 struct driver_module_data *dmd; 2346 devclass_t bus_devclass; 2347 kobj_class_t driver; 2348 const char *parentname; 2349 2350 dmd = (struct driver_module_data *)arg; 2351 bus_devclass = devclass_find_internal(dmd->dmd_busname, NULL, TRUE); 2352 error = 0; 2353 2354 switch (what) { 2355 case MOD_LOAD: 2356 if (dmd->dmd_chainevh) 2357 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2358 2359 driver = dmd->dmd_driver; 2360 PDEBUG(("Loading module: driver %s on bus %s", 2361 DRIVERNAME(driver), dmd->dmd_busname)); 2362 error = devclass_add_driver(bus_devclass, driver); 2363 if (error) 2364 break; 2365 2366 /* 2367 * If the driver has any base classes, make the 2368 * devclass inherit from the devclass of the driver's 2369 * first base class. This will allow the system to 2370 * search for drivers in both devclasses for children 2371 * of a device using this driver. 2372 */ 2373 if (driver->baseclasses) 2374 parentname = driver->baseclasses[0]->name; 2375 else 2376 parentname = NULL; 2377 *dmd->dmd_devclass = devclass_find_internal(driver->name, 2378 parentname, TRUE); 2379 break; 2380 2381 case MOD_UNLOAD: 2382 PDEBUG(("Unloading module: driver %s from bus %s", 2383 DRIVERNAME(dmd->dmd_driver), dmd->dmd_busname)); 2384 error = devclass_delete_driver(bus_devclass, dmd->dmd_driver); 2385 2386 if (!error && dmd->dmd_chainevh) 2387 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2388 break; 2389 } 2390 2391 return (error); 2392 } 2393 2394 #ifdef BUS_DEBUG 2395 2396 /* 2397 * The _short versions avoid iteration by not calling anything that prints 2398 * more than oneliners. I love oneliners. 2399 */ 2400 2401 static void 2402 print_device_short(device_t dev, int indent) 2403 { 2404 if (!dev) 2405 return; 2406 2407 indentprintf(("device %d: <%s> %sparent,%schildren,%s%s%s%s,%sivars,%ssoftc,busy=%d\n", 2408 dev->unit, dev->desc, 2409 (dev->parent? "":"no "), 2410 (TAILQ_EMPTY(&dev->children)? "no ":""), 2411 (dev->flags&DF_ENABLED? "enabled,":"disabled,"), 2412 (dev->flags&DF_FIXEDCLASS? "fixed,":""), 2413 (dev->flags&DF_WILDCARD? "wildcard,":""), 2414 (dev->flags&DF_DESCMALLOCED? "descmalloced,":""), 2415 (dev->ivars? "":"no "), 2416 (dev->softc? "":"no "), 2417 dev->busy)); 2418 } 2419 2420 static void 2421 print_device(device_t dev, int indent) 2422 { 2423 if (!dev) 2424 return; 2425 2426 print_device_short(dev, indent); 2427 2428 indentprintf(("Parent:\n")); 2429 print_device_short(dev->parent, indent+1); 2430 indentprintf(("Driver:\n")); 2431 print_driver_short(dev->driver, indent+1); 2432 indentprintf(("Devclass:\n")); 2433 print_devclass_short(dev->devclass, indent+1); 2434 } 2435 2436 /* 2437 * Print the device and all its children (indented). 2438 */ 2439 void 2440 print_device_tree_short(device_t dev, int indent) 2441 { 2442 device_t child; 2443 2444 if (!dev) 2445 return; 2446 2447 print_device_short(dev, indent); 2448 2449 TAILQ_FOREACH(child, &dev->children, link) 2450 print_device_tree_short(child, indent+1); 2451 } 2452 2453 /* 2454 * Print the device and all its children (indented). 2455 */ 2456 void 2457 print_device_tree(device_t dev, int indent) 2458 { 2459 device_t child; 2460 2461 if (!dev) 2462 return; 2463 2464 print_device(dev, indent); 2465 2466 TAILQ_FOREACH(child, &dev->children, link) 2467 print_device_tree(child, indent+1); 2468 } 2469 2470 static void 2471 print_driver_short(driver_t *driver, int indent) 2472 { 2473 if (!driver) 2474 return; 2475 2476 indentprintf(("driver %s: softc size = %d\n", 2477 driver->name, driver->size)); 2478 } 2479 2480 static void 2481 print_driver(driver_t *driver, int indent) 2482 { 2483 if (!driver) 2484 return; 2485 2486 print_driver_short(driver, indent); 2487 } 2488 2489 2490 static void 2491 print_driver_list(driver_list_t drivers, int indent) 2492 { 2493 driverlink_t driver; 2494 2495 TAILQ_FOREACH(driver, &drivers, link) 2496 print_driver(driver->driver, indent); 2497 } 2498 2499 static void 2500 print_devclass_short(devclass_t dc, int indent) 2501 { 2502 if (!dc) 2503 return; 2504 2505 indentprintf(("devclass %s: max units = %d\n", dc->name, dc->maxunit)); 2506 } 2507 2508 static void 2509 print_devclass(devclass_t dc, int indent) 2510 { 2511 int i; 2512 2513 if (!dc) 2514 return; 2515 2516 print_devclass_short(dc, indent); 2517 indentprintf(("Drivers:\n")); 2518 print_driver_list(dc->drivers, indent+1); 2519 2520 indentprintf(("Devices:\n")); 2521 for (i = 0; i < dc->maxunit; i++) 2522 if (dc->devices[i]) 2523 print_device(dc->devices[i], indent+1); 2524 } 2525 2526 void 2527 print_devclass_list_short(void) 2528 { 2529 devclass_t dc; 2530 2531 printf("Short listing of devclasses, drivers & devices:\n"); 2532 TAILQ_FOREACH(dc, &devclasses, link) { 2533 print_devclass_short(dc, 0); 2534 } 2535 } 2536 2537 void 2538 print_devclass_list(void) 2539 { 2540 devclass_t dc; 2541 2542 printf("Full listing of devclasses, drivers & devices:\n"); 2543 TAILQ_FOREACH(dc, &devclasses, link) { 2544 print_devclass(dc, 0); 2545 } 2546 } 2547 2548 #endif 2549 2550 /* 2551 * Check to see if a device is disabled via a disabled hint. 2552 */ 2553 int 2554 resource_disabled(const char *name, int unit) 2555 { 2556 int error, value; 2557 2558 error = resource_int_value(name, unit, "disabled", &value); 2559 if (error) 2560 return(0); 2561 return(value); 2562 } 2563