1 /*- 2 * Copyright (c) 1997,1998 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include "opt_bus.h" 30 31 #include <sys/param.h> 32 #include <sys/queue.h> 33 #include <sys/malloc.h> 34 #include <sys/kernel.h> 35 #include <sys/module.h> 36 #include <sys/kobj.h> 37 #include <sys/bus_private.h> 38 #include <sys/sysctl.h> 39 #include <sys/systm.h> 40 #include <machine/bus.h> 41 #include <sys/rman.h> 42 #include <machine/stdarg.h> /* for device_printf() */ 43 44 static MALLOC_DEFINE(M_BUS, "bus", "Bus data structures"); 45 46 #ifdef BUS_DEBUG 47 48 static int bus_debug = 1; 49 SYSCTL_INT(_debug, OID_AUTO, bus_debug, CTLFLAG_RW, &bus_debug, 0, 50 "Debug bus code"); 51 52 #define PDEBUG(a) if (bus_debug) {printf(__FUNCTION__ ":%d: ", __LINE__), printf a, printf("\n");} 53 #define DEVICENAME(d) ((d)? device_get_name(d): "no device") 54 #define DRIVERNAME(d) ((d)? d->name : "no driver") 55 #define DEVCLANAME(d) ((d)? d->name : "no devclass") 56 57 /* Produce the indenting, indent*2 spaces plus a '.' ahead of that to 58 * prevent syslog from deleting initial spaces 59 */ 60 #define indentprintf(p) do { int iJ; printf("."); for (iJ=0; iJ<indent; iJ++) printf(" "); printf p ; } while (0) 61 62 static void print_device_short(device_t dev, int indent); 63 static void print_device(device_t dev, int indent); 64 void print_device_tree_short(device_t dev, int indent); 65 void print_device_tree(device_t dev, int indent); 66 static void print_driver_short(driver_t *driver, int indent); 67 static void print_driver(driver_t *driver, int indent); 68 static void print_driver_list(driver_list_t drivers, int indent); 69 static void print_devclass_short(devclass_t dc, int indent); 70 static void print_devclass(devclass_t dc, int indent); 71 void print_devclass_list_short(void); 72 void print_devclass_list(void); 73 74 #else 75 /* Make the compiler ignore the function calls */ 76 #define PDEBUG(a) /* nop */ 77 #define DEVICENAME(d) /* nop */ 78 #define DRIVERNAME(d) /* nop */ 79 #define DEVCLANAME(d) /* nop */ 80 81 #define print_device_short(d,i) /* nop */ 82 #define print_device(d,i) /* nop */ 83 #define print_device_tree_short(d,i) /* nop */ 84 #define print_device_tree(d,i) /* nop */ 85 #define print_driver_short(d,i) /* nop */ 86 #define print_driver(d,i) /* nop */ 87 #define print_driver_list(d,i) /* nop */ 88 #define print_devclass_short(d,i) /* nop */ 89 #define print_devclass(d,i) /* nop */ 90 #define print_devclass_list_short() /* nop */ 91 #define print_devclass_list() /* nop */ 92 #endif 93 94 extern char static_hints[]; 95 extern int hintmode; 96 static int hints_loaded = 0; 97 98 TAILQ_HEAD(,device) bus_data_devices; 99 static int bus_data_generation = 1; 100 101 kobj_method_t null_methods[] = { 102 { 0, 0 } 103 }; 104 105 DEFINE_CLASS(null, null_methods, 0); 106 107 /* 108 * Devclass implementation 109 */ 110 111 static devclass_list_t devclasses = TAILQ_HEAD_INITIALIZER(devclasses); 112 113 static devclass_t 114 devclass_find_internal(const char *classname, int create) 115 { 116 devclass_t dc; 117 118 PDEBUG(("looking for %s", classname)); 119 if (!classname) 120 return (NULL); 121 122 TAILQ_FOREACH(dc, &devclasses, link) { 123 if (!strcmp(dc->name, classname)) 124 return (dc); 125 } 126 127 PDEBUG(("%s not found%s", classname, (create? ", creating": ""))); 128 if (create) { 129 dc = malloc(sizeof(struct devclass) + strlen(classname) + 1, 130 M_BUS, M_NOWAIT|M_ZERO); 131 if (!dc) 132 return (NULL); 133 dc->name = (char*) (dc + 1); 134 strcpy(dc->name, classname); 135 dc->devices = NULL; 136 dc->maxunit = 0; 137 TAILQ_INIT(&dc->drivers); 138 TAILQ_INSERT_TAIL(&devclasses, dc, link); 139 140 bus_data_generation_update(); 141 } 142 143 return (dc); 144 } 145 146 devclass_t 147 devclass_create(const char *classname) 148 { 149 return (devclass_find_internal(classname, TRUE)); 150 } 151 152 devclass_t 153 devclass_find(const char *classname) 154 { 155 return (devclass_find_internal(classname, FALSE)); 156 } 157 158 int 159 devclass_add_driver(devclass_t dc, driver_t *driver) 160 { 161 driverlink_t dl; 162 int i; 163 164 PDEBUG(("%s", DRIVERNAME(driver))); 165 166 dl = malloc(sizeof *dl, M_BUS, M_NOWAIT|M_ZERO); 167 if (!dl) 168 return (ENOMEM); 169 170 /* 171 * Compile the driver's methods. Also increase the reference count 172 * so that the class doesn't get freed when the last instance 173 * goes. This means we can safely use static methods and avoids a 174 * double-free in devclass_delete_driver. 175 */ 176 kobj_class_compile((kobj_class_t) driver); 177 178 /* 179 * Make sure the devclass which the driver is implementing exists. 180 */ 181 devclass_find_internal(driver->name, TRUE); 182 183 dl->driver = driver; 184 TAILQ_INSERT_TAIL(&dc->drivers, dl, link); 185 driver->refs++; 186 187 /* 188 * Call BUS_DRIVER_ADDED for any existing busses in this class. 189 */ 190 for (i = 0; i < dc->maxunit; i++) 191 if (dc->devices[i]) 192 BUS_DRIVER_ADDED(dc->devices[i], driver); 193 194 bus_data_generation_update(); 195 return (0); 196 } 197 198 int 199 devclass_delete_driver(devclass_t busclass, driver_t *driver) 200 { 201 devclass_t dc = devclass_find(driver->name); 202 driverlink_t dl; 203 device_t dev; 204 int i; 205 int error; 206 207 PDEBUG(("%s from devclass %s", driver->name, DEVCLANAME(busclass))); 208 209 if (!dc) 210 return (0); 211 212 /* 213 * Find the link structure in the bus' list of drivers. 214 */ 215 TAILQ_FOREACH(dl, &busclass->drivers, link) { 216 if (dl->driver == driver) 217 break; 218 } 219 220 if (!dl) { 221 PDEBUG(("%s not found in %s list", driver->name, 222 busclass->name)); 223 return (ENOENT); 224 } 225 226 /* 227 * Disassociate from any devices. We iterate through all the 228 * devices in the devclass of the driver and detach any which are 229 * using the driver and which have a parent in the devclass which 230 * we are deleting from. 231 * 232 * Note that since a driver can be in multiple devclasses, we 233 * should not detach devices which are not children of devices in 234 * the affected devclass. 235 */ 236 for (i = 0; i < dc->maxunit; i++) { 237 if (dc->devices[i]) { 238 dev = dc->devices[i]; 239 if (dev->driver == driver && dev->parent && 240 dev->parent->devclass == busclass) { 241 if ((error = device_detach(dev)) != 0) 242 return (error); 243 device_set_driver(dev, NULL); 244 } 245 } 246 } 247 248 TAILQ_REMOVE(&busclass->drivers, dl, link); 249 free(dl, M_BUS); 250 251 driver->refs--; 252 if (driver->refs == 0) 253 kobj_class_free((kobj_class_t) driver); 254 255 bus_data_generation_update(); 256 return (0); 257 } 258 259 static driverlink_t 260 devclass_find_driver_internal(devclass_t dc, const char *classname) 261 { 262 driverlink_t dl; 263 264 PDEBUG(("%s in devclass %s", classname, DEVCLANAME(dc))); 265 266 TAILQ_FOREACH(dl, &dc->drivers, link) { 267 if (!strcmp(dl->driver->name, classname)) 268 return (dl); 269 } 270 271 PDEBUG(("not found")); 272 return (NULL); 273 } 274 275 driver_t * 276 devclass_find_driver(devclass_t dc, const char *classname) 277 { 278 driverlink_t dl; 279 280 dl = devclass_find_driver_internal(dc, classname); 281 if (dl) 282 return (dl->driver); 283 return (NULL); 284 } 285 286 const char * 287 devclass_get_name(devclass_t dc) 288 { 289 return (dc->name); 290 } 291 292 device_t 293 devclass_get_device(devclass_t dc, int unit) 294 { 295 if (dc == NULL || unit < 0 || unit >= dc->maxunit) 296 return (NULL); 297 return (dc->devices[unit]); 298 } 299 300 void * 301 devclass_get_softc(devclass_t dc, int unit) 302 { 303 device_t dev; 304 305 dev = devclass_get_device(dc, unit); 306 if (!dev) 307 return (NULL); 308 309 return (device_get_softc(dev)); 310 } 311 312 int 313 devclass_get_devices(devclass_t dc, device_t **devlistp, int *devcountp) 314 { 315 int i; 316 int count; 317 device_t *list; 318 319 count = 0; 320 for (i = 0; i < dc->maxunit; i++) 321 if (dc->devices[i]) 322 count++; 323 324 list = malloc(count * sizeof(device_t), M_TEMP, M_NOWAIT|M_ZERO); 325 if (!list) 326 return (ENOMEM); 327 328 count = 0; 329 for (i = 0; i < dc->maxunit; i++) { 330 if (dc->devices[i]) { 331 list[count] = dc->devices[i]; 332 count++; 333 } 334 } 335 336 *devlistp = list; 337 *devcountp = count; 338 339 return (0); 340 } 341 342 int 343 devclass_get_maxunit(devclass_t dc) 344 { 345 return (dc->maxunit); 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 were given a wired unit number, check for existing device */ 356 /* XXX imp XXX */ 357 if (unit != -1) { 358 if (unit >= 0 && unit < dc->maxunit && 359 dc->devices[unit] != NULL) { 360 /* find the next available slot */ 361 while (++unit < dc->maxunit && 362 dc->devices[unit] != NULL) 363 continue; 364 if (bootverbose) 365 printf("%s-: %s%d already exists, using %s%d instead\n", 366 dc->name, dc->name, *unitp, dc->name, unit); 367 } 368 } else { 369 /* Unwired device, find the next available slot for it */ 370 unit = 0; 371 while (unit < dc->maxunit && dc->devices[unit] != NULL) 372 unit++; 373 } 374 375 /* 376 * We've selected a unit beyond the length of the table, so let's 377 * extend the table to make room for all units up to and including 378 * this one. 379 */ 380 if (unit >= dc->maxunit) { 381 device_t *newlist; 382 int newsize; 383 384 newsize = roundup((unit + 1), MINALLOCSIZE / sizeof(device_t)); 385 newlist = malloc(sizeof(device_t) * newsize, M_BUS, M_NOWAIT); 386 if (!newlist) 387 return (ENOMEM); 388 bcopy(dc->devices, newlist, sizeof(device_t) * dc->maxunit); 389 bzero(newlist + dc->maxunit, 390 sizeof(device_t) * (newsize - dc->maxunit)); 391 if (dc->devices) 392 free(dc->devices, M_BUS); 393 dc->devices = newlist; 394 dc->maxunit = newsize; 395 } 396 PDEBUG(("now: unit %d in devclass %s", unit, DEVCLANAME(dc))); 397 398 *unitp = unit; 399 return (0); 400 } 401 402 static int 403 devclass_add_device(devclass_t dc, device_t dev) 404 { 405 int buflen, error; 406 407 PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); 408 409 buflen = strlen(dc->name) + 5; 410 dev->nameunit = malloc(buflen, M_BUS, M_NOWAIT|M_ZERO); 411 if (!dev->nameunit) 412 return (ENOMEM); 413 414 if ((error = devclass_alloc_unit(dc, &dev->unit)) != 0) { 415 free(dev->nameunit, M_BUS); 416 dev->nameunit = NULL; 417 return (error); 418 } 419 dc->devices[dev->unit] = dev; 420 dev->devclass = dc; 421 snprintf(dev->nameunit, buflen, "%s%d", dc->name, dev->unit); 422 423 return (0); 424 } 425 426 static int 427 devclass_delete_device(devclass_t dc, device_t dev) 428 { 429 if (!dc || !dev) 430 return (0); 431 432 PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); 433 434 if (dev->devclass != dc || dc->devices[dev->unit] != dev) 435 panic("devclass_delete_device: inconsistent device class"); 436 dc->devices[dev->unit] = NULL; 437 if (dev->flags & DF_WILDCARD) 438 dev->unit = -1; 439 dev->devclass = NULL; 440 free(dev->nameunit, M_BUS); 441 dev->nameunit = NULL; 442 443 return (0); 444 } 445 446 static device_t 447 make_device(device_t parent, const char *name, int unit) 448 { 449 device_t dev; 450 devclass_t dc; 451 452 PDEBUG(("%s at %s as unit %d", name, DEVICENAME(parent), unit)); 453 454 if (name) { 455 dc = devclass_find_internal(name, TRUE); 456 if (!dc) { 457 printf("make_device: can't find device class %s\n", 458 name); 459 return (NULL); 460 } 461 } else { 462 dc = NULL; 463 } 464 465 dev = malloc(sizeof(struct device), M_BUS, M_NOWAIT|M_ZERO); 466 if (!dev) 467 return (0); 468 469 dev->parent = parent; 470 TAILQ_INIT(&dev->children); 471 kobj_init((kobj_t) dev, &null_class); 472 dev->driver = NULL; 473 dev->devclass = NULL; 474 dev->unit = unit; 475 dev->nameunit = NULL; 476 dev->desc = NULL; 477 dev->busy = 0; 478 dev->devflags = 0; 479 dev->flags = DF_ENABLED; 480 dev->order = 0; 481 if (unit == -1) 482 dev->flags |= DF_WILDCARD; 483 if (name) { 484 dev->flags |= DF_FIXEDCLASS; 485 devclass_add_device(dc, dev); 486 } 487 dev->ivars = NULL; 488 dev->softc = NULL; 489 490 dev->state = DS_NOTPRESENT; 491 492 TAILQ_INSERT_TAIL(&bus_data_devices, dev, devlink); 493 bus_data_generation_update(); 494 495 return (dev); 496 } 497 498 static int 499 device_print_child(device_t dev, device_t child) 500 { 501 int retval = 0; 502 503 if (device_is_alive(child)) 504 retval += BUS_PRINT_CHILD(dev, child); 505 else 506 retval += device_printf(child, " not found\n"); 507 508 return (retval); 509 } 510 511 device_t 512 device_add_child(device_t dev, const char *name, int unit) 513 { 514 return (device_add_child_ordered(dev, 0, name, unit)); 515 } 516 517 device_t 518 device_add_child_ordered(device_t dev, int order, const char *name, int unit) 519 { 520 device_t child; 521 device_t place; 522 523 PDEBUG(("%s at %s with order %d as unit %d", 524 name, DEVICENAME(dev), order, unit)); 525 526 child = make_device(dev, name, unit); 527 if (child == NULL) 528 return (child); 529 child->order = order; 530 531 TAILQ_FOREACH(place, &dev->children, link) { 532 if (place->order > order) 533 break; 534 } 535 536 if (place) { 537 /* 538 * The device 'place' is the first device whose order is 539 * greater than the new child. 540 */ 541 TAILQ_INSERT_BEFORE(place, child, link); 542 } else { 543 /* 544 * The new child's order is greater or equal to the order of 545 * any existing device. Add the child to the tail of the list. 546 */ 547 TAILQ_INSERT_TAIL(&dev->children, child, link); 548 } 549 550 bus_data_generation_update(); 551 return (child); 552 } 553 554 int 555 device_delete_child(device_t dev, device_t child) 556 { 557 int error; 558 device_t grandchild; 559 560 PDEBUG(("%s from %s", DEVICENAME(child), DEVICENAME(dev))); 561 562 /* remove children first */ 563 while ( (grandchild = TAILQ_FIRST(&child->children)) ) { 564 error = device_delete_child(child, grandchild); 565 if (error) 566 return (error); 567 } 568 569 if ((error = device_detach(child)) != 0) 570 return (error); 571 if (child->devclass) 572 devclass_delete_device(child->devclass, child); 573 TAILQ_REMOVE(&dev->children, child, link); 574 TAILQ_REMOVE(&bus_data_devices, child, devlink); 575 device_set_desc(child, NULL); 576 free(child, M_BUS); 577 578 bus_data_generation_update(); 579 return (0); 580 } 581 582 /* 583 * Find only devices attached to this bus. 584 */ 585 device_t 586 device_find_child(device_t dev, const char *classname, int unit) 587 { 588 devclass_t dc; 589 device_t child; 590 591 dc = devclass_find(classname); 592 if (!dc) 593 return (NULL); 594 595 child = devclass_get_device(dc, unit); 596 if (child && child->parent == dev) 597 return (child); 598 return (NULL); 599 } 600 601 static driverlink_t 602 first_matching_driver(devclass_t dc, device_t dev) 603 { 604 if (dev->devclass) 605 return (devclass_find_driver_internal(dc, dev->devclass->name)); 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 } 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 (dl = first_matching_driver(dc, child); 639 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 no higher match 651 * 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 certainly doesn't match. 661 */ 662 if (result > 0) { 663 device_set_driver(child, 0); 664 continue; 665 } 666 667 /* 668 * A priority lower than SUCCESS, remember the best matching 669 * driver. Initialise the value of pri for the first match. 670 */ 671 if (best == 0 || result > pri) { 672 best = dl; 673 pri = result; 674 continue; 675 } 676 } 677 678 /* 679 * If we found a driver, change state and initialise the devclass. 680 */ 681 if (best) { 682 if (!child->devclass) 683 device_set_devclass(child, best->driver->name); 684 device_set_driver(child, best->driver); 685 if (pri < 0) { 686 /* 687 * A bit bogus. Call the probe method again to make 688 * sure that we have the right description. 689 */ 690 DEVICE_PROBE(child); 691 } 692 child->state = DS_ALIVE; 693 694 bus_data_generation_update(); 695 return (0); 696 } 697 698 return (ENXIO); 699 } 700 701 device_t 702 device_get_parent(device_t dev) 703 { 704 return (dev->parent); 705 } 706 707 int 708 device_get_children(device_t dev, device_t **devlistp, int *devcountp) 709 { 710 int count; 711 device_t child; 712 device_t *list; 713 714 count = 0; 715 TAILQ_FOREACH(child, &dev->children, link) { 716 count++; 717 } 718 719 list = malloc(count * sizeof(device_t), M_TEMP, M_NOWAIT|M_ZERO); 720 if (!list) 721 return (ENOMEM); 722 723 count = 0; 724 TAILQ_FOREACH(child, &dev->children, link) { 725 list[count] = child; 726 count++; 727 } 728 729 *devlistp = list; 730 *devcountp = count; 731 732 return (0); 733 } 734 735 driver_t * 736 device_get_driver(device_t dev) 737 { 738 return (dev->driver); 739 } 740 741 devclass_t 742 device_get_devclass(device_t dev) 743 { 744 return (dev->devclass); 745 } 746 747 const char * 748 device_get_name(device_t dev) 749 { 750 if (dev->devclass) 751 return (devclass_get_name(dev->devclass)); 752 return (NULL); 753 } 754 755 const char * 756 device_get_nameunit(device_t dev) 757 { 758 return (dev->nameunit); 759 } 760 761 int 762 device_get_unit(device_t dev) 763 { 764 return (dev->unit); 765 } 766 767 const char * 768 device_get_desc(device_t dev) 769 { 770 return (dev->desc); 771 } 772 773 u_int32_t 774 device_get_flags(device_t dev) 775 { 776 return (dev->devflags); 777 } 778 779 int 780 device_print_prettyname(device_t dev) 781 { 782 const char *name = device_get_name(dev); 783 784 if (name == 0) 785 return (printf("unknown: ")); 786 return (printf("%s%d: ", name, device_get_unit(dev))); 787 } 788 789 int 790 device_printf(device_t dev, const char * fmt, ...) 791 { 792 va_list ap; 793 int retval; 794 795 retval = device_print_prettyname(dev); 796 va_start(ap, fmt); 797 retval += vprintf(fmt, ap); 798 va_end(ap); 799 return (retval); 800 } 801 802 static void 803 device_set_desc_internal(device_t dev, const char* desc, int copy) 804 { 805 if (dev->desc && (dev->flags & DF_DESCMALLOCED)) { 806 free(dev->desc, M_BUS); 807 dev->flags &= ~DF_DESCMALLOCED; 808 dev->desc = NULL; 809 } 810 811 if (copy && desc) { 812 dev->desc = malloc(strlen(desc) + 1, M_BUS, M_NOWAIT); 813 if (dev->desc) { 814 strcpy(dev->desc, desc); 815 dev->flags |= DF_DESCMALLOCED; 816 } 817 } else { 818 /* Avoid a -Wcast-qual warning */ 819 dev->desc = (char *)(uintptr_t) desc; 820 } 821 822 bus_data_generation_update(); 823 } 824 825 void 826 device_set_desc(device_t dev, const char* desc) 827 { 828 device_set_desc_internal(dev, desc, FALSE); 829 } 830 831 void 832 device_set_desc_copy(device_t dev, const char* desc) 833 { 834 device_set_desc_internal(dev, desc, TRUE); 835 } 836 837 void 838 device_set_flags(device_t dev, u_int32_t flags) 839 { 840 dev->devflags = flags; 841 } 842 843 void * 844 device_get_softc(device_t dev) 845 { 846 return (dev->softc); 847 } 848 849 void 850 device_set_softc(device_t dev, void *softc) 851 { 852 if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC)) 853 free(dev->softc, M_BUS); 854 dev->softc = softc; 855 if (dev->softc) 856 dev->flags |= DF_EXTERNALSOFTC; 857 else 858 dev->flags &= ~DF_EXTERNALSOFTC; 859 } 860 861 void * 862 device_get_ivars(device_t dev) 863 { 864 return (dev->ivars); 865 } 866 867 void 868 device_set_ivars(device_t dev, void * ivars) 869 { 870 if (!dev) 871 return; 872 873 dev->ivars = ivars; 874 875 return; 876 } 877 878 device_state_t 879 device_get_state(device_t dev) 880 { 881 return (dev->state); 882 } 883 884 void 885 device_enable(device_t dev) 886 { 887 dev->flags |= DF_ENABLED; 888 } 889 890 void 891 device_disable(device_t dev) 892 { 893 dev->flags &= ~DF_ENABLED; 894 } 895 896 void 897 device_busy(device_t dev) 898 { 899 if (dev->state < DS_ATTACHED) 900 panic("device_busy: called for unattached device"); 901 if (dev->busy == 0 && dev->parent) 902 device_busy(dev->parent); 903 dev->busy++; 904 dev->state = DS_BUSY; 905 } 906 907 void 908 device_unbusy(device_t dev) 909 { 910 if (dev->state != DS_BUSY) 911 panic("device_unbusy: called for non-busy device"); 912 dev->busy--; 913 if (dev->busy == 0) { 914 if (dev->parent) 915 device_unbusy(dev->parent); 916 dev->state = DS_ATTACHED; 917 } 918 } 919 920 void 921 device_quiet(device_t dev) 922 { 923 dev->flags |= DF_QUIET; 924 } 925 926 void 927 device_verbose(device_t dev) 928 { 929 dev->flags &= ~DF_QUIET; 930 } 931 932 int 933 device_is_quiet(device_t dev) 934 { 935 return ((dev->flags & DF_QUIET) != 0); 936 } 937 938 int 939 device_is_enabled(device_t dev) 940 { 941 return ((dev->flags & DF_ENABLED) != 0); 942 } 943 944 int 945 device_is_alive(device_t dev) 946 { 947 return (dev->state >= DS_ALIVE); 948 } 949 950 int 951 device_set_devclass(device_t dev, const char *classname) 952 { 953 devclass_t dc; 954 int error; 955 956 if (!classname) { 957 if (dev->devclass) 958 devclass_delete_device(dev->devclass, dev); 959 return (0); 960 } 961 962 if (dev->devclass) { 963 printf("device_set_devclass: device class already set\n"); 964 return (EINVAL); 965 } 966 967 dc = devclass_find_internal(classname, TRUE); 968 if (!dc) 969 return (ENOMEM); 970 971 error = devclass_add_device(dc, dev); 972 973 bus_data_generation_update(); 974 return (error); 975 } 976 977 int 978 device_set_driver(device_t dev, driver_t *driver) 979 { 980 if (dev->state >= DS_ATTACHED) 981 return (EBUSY); 982 983 if (dev->driver == driver) 984 return (0); 985 986 if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC)) { 987 free(dev->softc, M_BUS); 988 dev->softc = NULL; 989 } 990 kobj_delete((kobj_t) dev, 0); 991 dev->driver = driver; 992 if (driver) { 993 kobj_init((kobj_t) dev, (kobj_class_t) driver); 994 if (!(dev->flags & DF_EXTERNALSOFTC)) { 995 dev->softc = malloc(driver->size, M_BUS, 996 M_NOWAIT | M_ZERO); 997 if (!dev->softc) { 998 kobj_init((kobj_t) dev, &null_class); 999 dev->driver = NULL; 1000 return (ENOMEM); 1001 } 1002 } 1003 } else { 1004 kobj_init((kobj_t) dev, &null_class); 1005 } 1006 1007 bus_data_generation_update(); 1008 return (0); 1009 } 1010 1011 int 1012 device_probe_and_attach(device_t dev) 1013 { 1014 device_t bus = dev->parent; 1015 int error = 0; 1016 1017 if (dev->state >= DS_ALIVE) 1018 return (0); 1019 1020 if (dev->flags & DF_ENABLED) { 1021 error = device_probe_child(bus, dev); 1022 if (!error) { 1023 if (!device_is_quiet(dev)) 1024 device_print_child(bus, dev); 1025 error = DEVICE_ATTACH(dev); 1026 if (!error) 1027 dev->state = DS_ATTACHED; 1028 else { 1029 printf("device_probe_and_attach: %s%d attach returned %d\n", 1030 dev->driver->name, dev->unit, error); 1031 device_set_driver(dev, NULL); 1032 dev->state = DS_NOTPRESENT; 1033 } 1034 } else { 1035 if (!(dev->flags & DF_DONENOMATCH)) { 1036 BUS_PROBE_NOMATCH(bus, dev); 1037 dev->flags |= DF_DONENOMATCH; 1038 } 1039 } 1040 } else { 1041 if (bootverbose) { 1042 device_print_prettyname(dev); 1043 printf("not probed (disabled)\n"); 1044 } 1045 } 1046 1047 return (error); 1048 } 1049 1050 int 1051 device_detach(device_t dev) 1052 { 1053 int error; 1054 1055 PDEBUG(("%s", DEVICENAME(dev))); 1056 if (dev->state == DS_BUSY) 1057 return (EBUSY); 1058 if (dev->state != DS_ATTACHED) 1059 return (0); 1060 1061 if ((error = DEVICE_DETACH(dev)) != 0) 1062 return (error); 1063 device_printf(dev, "detached\n"); 1064 if (dev->parent) 1065 BUS_CHILD_DETACHED(dev->parent, dev); 1066 1067 if (!(dev->flags & DF_FIXEDCLASS)) 1068 devclass_delete_device(dev->devclass, dev); 1069 1070 dev->state = DS_NOTPRESENT; 1071 device_set_driver(dev, NULL); 1072 1073 return (0); 1074 } 1075 1076 int 1077 device_shutdown(device_t dev) 1078 { 1079 if (dev->state < DS_ATTACHED) 1080 return (0); 1081 return (DEVICE_SHUTDOWN(dev)); 1082 } 1083 1084 int 1085 device_set_unit(device_t dev, int unit) 1086 { 1087 devclass_t dc; 1088 int err; 1089 1090 dc = device_get_devclass(dev); 1091 if (unit < dc->maxunit && dc->devices[unit]) 1092 return (EBUSY); 1093 err = devclass_delete_device(dc, dev); 1094 if (err) 1095 return (err); 1096 dev->unit = unit; 1097 err = devclass_add_device(dc, dev); 1098 if (err) 1099 return (err); 1100 1101 bus_data_generation_update(); 1102 return (0); 1103 } 1104 1105 /*======================================*/ 1106 /* 1107 * Access functions for device resources. 1108 */ 1109 1110 /* Runtime version */ 1111 static struct config_device *devtab; 1112 static int devtab_count = 0; 1113 1114 static int 1115 resource_new_name(const char *name, int unit) 1116 { 1117 struct config_device *new; 1118 1119 new = malloc((devtab_count + 1) * sizeof(*new), M_TEMP, M_NOWAIT); 1120 if (new == NULL) 1121 return (-1); 1122 if (devtab && devtab_count > 0) 1123 bcopy(devtab, new, devtab_count * sizeof(*new)); 1124 bzero(&new[devtab_count], sizeof(*new)); 1125 new[devtab_count].name = malloc(strlen(name) + 1, M_TEMP, M_NOWAIT); 1126 if (new[devtab_count].name == NULL) { 1127 free(new, M_TEMP); 1128 return (-1); 1129 } 1130 strcpy(new[devtab_count].name, name); 1131 new[devtab_count].unit = unit; 1132 new[devtab_count].resource_count = 0; 1133 new[devtab_count].resources = NULL; 1134 devtab = new; 1135 return (devtab_count++); 1136 } 1137 1138 static int 1139 resource_new_resname(int j, const char *resname, resource_type type) 1140 { 1141 struct config_resource *new; 1142 int i; 1143 1144 i = devtab[j].resource_count; 1145 new = malloc((i + 1) * sizeof(*new), M_TEMP, M_NOWAIT); 1146 if (new == NULL) 1147 return (-1); 1148 if (devtab[j].resources && i > 0) 1149 bcopy(devtab[j].resources, new, i * sizeof(*new)); 1150 bzero(&new[i], sizeof(*new)); 1151 new[i].name = malloc(strlen(resname) + 1, M_TEMP, M_NOWAIT); 1152 if (new[i].name == NULL) { 1153 free(new, M_TEMP); 1154 return (-1); 1155 } 1156 strcpy(new[i].name, resname); 1157 new[i].type = type; 1158 if (devtab[j].resources) 1159 free(devtab[j].resources, M_TEMP); 1160 devtab[j].resources = new; 1161 devtab[j].resource_count = i + 1; 1162 return (i); 1163 } 1164 1165 static int 1166 resource_match_string(int i, const char *resname, const char *value) 1167 { 1168 int j; 1169 struct config_resource *res; 1170 1171 for (j = 0, res = devtab[i].resources; 1172 j < devtab[i].resource_count; j++, res++) 1173 if (!strcmp(res->name, resname) 1174 && res->type == RES_STRING 1175 && !strcmp(res->u.stringval, value)) 1176 return (j); 1177 return (-1); 1178 } 1179 1180 static int 1181 resource_find_hard(char *cp, const char *name, int unit, 1182 const char *resname, struct config_resource **result) 1183 { 1184 char match[256]; 1185 int matchlen; 1186 char *op; 1187 long val; 1188 1189 snprintf(match, sizeof(match), "hint.%s.%d.%s=", name, unit, resname); 1190 matchlen = strlen(match); 1191 while (cp) { 1192 if (strncmp(match, cp, matchlen) == 0) 1193 break; 1194 while (*cp != '\0') 1195 cp++; 1196 cp++; 1197 if (*cp == '\0') { 1198 cp = NULL; 1199 break; 1200 } 1201 } 1202 if (cp) 1203 cp += matchlen; /* skip over name and '=' */ 1204 else 1205 return (ENOENT); 1206 val = strtoul(cp, &op, 0); 1207 if (*cp != '\0' && *op == '\0') { 1208 (*result)->type = RES_INT; 1209 (*result)->u.intval = val; 1210 } else { 1211 (*result)->type = RES_STRING; 1212 (*result)->u.stringval = cp; 1213 } 1214 return (0); 1215 } 1216 1217 static int 1218 resource_find(const char *name, int unit, const char *resname, 1219 struct config_resource **result) 1220 { 1221 int i, j; 1222 struct config_resource *res; 1223 1224 if (!hints_loaded) { 1225 /* First specific, then generic. Dynamic over static. */ 1226 i = resource_find_hard(kern_envp, name, unit, resname, result); 1227 if (i == 0) 1228 return (0); 1229 i = resource_find_hard(static_hints, name, unit, resname, 1230 result); 1231 if (i == 0) 1232 return (0); 1233 i = resource_find_hard(kern_envp, name, -1, resname, result); 1234 if (i == 0) 1235 return (0); 1236 i = resource_find_hard(static_hints, name, -1, resname, result); 1237 return (i); 1238 } 1239 1240 /* 1241 * First check specific instances, then generic. 1242 */ 1243 for (i = 0; i < devtab_count; i++) { 1244 if (devtab[i].unit < 0) 1245 continue; 1246 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1247 res = devtab[i].resources; 1248 for (j = 0; j < devtab[i].resource_count; j++, res++) 1249 if (!strcmp(res->name, resname)) { 1250 *result = res; 1251 return (0); 1252 } 1253 } 1254 } 1255 for (i = 0; i < devtab_count; i++) { 1256 if (devtab[i].unit >= 0) 1257 continue; 1258 if (!strcmp(devtab[i].name, name)) { 1259 res = devtab[i].resources; 1260 for (j = 0; j < devtab[i].resource_count; j++, res++) 1261 if (!strcmp(res->name, resname)) { 1262 *result = res; 1263 return (0); 1264 } 1265 } 1266 } 1267 return (ENOENT); 1268 } 1269 1270 int 1271 resource_int_value(const char *name, int unit, const char *resname, int *result) 1272 { 1273 struct config_resource tmpres; 1274 struct config_resource *res; 1275 int error; 1276 1277 res = &tmpres; 1278 if ((error = resource_find(name, unit, resname, &res)) != 0) 1279 return (error); 1280 if (res->type != RES_INT) 1281 return (EFTYPE); 1282 *result = res->u.intval; 1283 return (0); 1284 } 1285 1286 int 1287 resource_long_value(const char *name, int unit, const char *resname, 1288 long *result) 1289 { 1290 struct config_resource tmpres; 1291 struct config_resource *res; 1292 int error; 1293 1294 res = &tmpres; 1295 if ((error = resource_find(name, unit, resname, &res)) != 0) 1296 return (error); 1297 if (res->type != RES_LONG) 1298 return (EFTYPE); 1299 *result = res->u.longval; 1300 return (0); 1301 } 1302 1303 int 1304 resource_string_value(const char *name, int unit, const char *resname, 1305 char **result) 1306 { 1307 struct config_resource tmpres; 1308 struct config_resource *res; 1309 int error; 1310 1311 res = &tmpres; 1312 if ((error = resource_find(name, unit, resname, &res)) != 0) 1313 return (error); 1314 if (res->type != RES_STRING) 1315 return (EFTYPE); 1316 *result = res->u.stringval; 1317 return (0); 1318 } 1319 1320 int 1321 resource_query_string(int i, const char *resname, const char *value) 1322 { 1323 if (i < 0) 1324 i = 0; 1325 else 1326 i = i + 1; 1327 for (; i < devtab_count; i++) 1328 if (resource_match_string(i, resname, value) >= 0) 1329 return (i); 1330 return (-1); 1331 } 1332 1333 int 1334 resource_locate(int i, const char *resname) 1335 { 1336 if (i < 0) 1337 i = 0; 1338 else 1339 i = i + 1; 1340 for (; i < devtab_count; i++) 1341 if (!strcmp(devtab[i].name, resname)) 1342 return (i); 1343 return (-1); 1344 } 1345 1346 int 1347 resource_count(void) 1348 { 1349 return (devtab_count); 1350 } 1351 1352 char * 1353 resource_query_name(int i) 1354 { 1355 return (devtab[i].name); 1356 } 1357 1358 int 1359 resource_query_unit(int i) 1360 { 1361 return (devtab[i].unit); 1362 } 1363 1364 static int 1365 resource_create(const char *name, int unit, const char *resname, 1366 resource_type type, struct config_resource **result) 1367 { 1368 int i, j; 1369 struct config_resource *res = NULL; 1370 1371 for (i = 0; i < devtab_count; i++) { 1372 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1373 res = devtab[i].resources; 1374 break; 1375 } 1376 } 1377 if (res == NULL) { 1378 i = resource_new_name(name, unit); 1379 if (i < 0) 1380 return (ENOMEM); 1381 res = devtab[i].resources; 1382 } 1383 for (j = 0; j < devtab[i].resource_count; j++, res++) { 1384 if (!strcmp(res->name, resname)) { 1385 *result = res; 1386 return (0); 1387 } 1388 } 1389 j = resource_new_resname(i, resname, type); 1390 if (j < 0) 1391 return (ENOMEM); 1392 res = &devtab[i].resources[j]; 1393 *result = res; 1394 return (0); 1395 } 1396 1397 int 1398 resource_set_int(const char *name, int unit, const char *resname, int value) 1399 { 1400 int error; 1401 struct config_resource *res; 1402 1403 error = resource_create(name, unit, resname, RES_INT, &res); 1404 if (error) 1405 return (error); 1406 if (res->type != RES_INT) 1407 return (EFTYPE); 1408 res->u.intval = value; 1409 return (0); 1410 } 1411 1412 int 1413 resource_set_long(const char *name, int unit, const char *resname, long value) 1414 { 1415 int error; 1416 struct config_resource *res; 1417 1418 error = resource_create(name, unit, resname, RES_LONG, &res); 1419 if (error) 1420 return (error); 1421 if (res->type != RES_LONG) 1422 return (EFTYPE); 1423 res->u.longval = value; 1424 return (0); 1425 } 1426 1427 int 1428 resource_set_string(const char *name, int unit, const char *resname, 1429 const char *value) 1430 { 1431 int error; 1432 struct config_resource *res; 1433 1434 error = resource_create(name, unit, resname, RES_STRING, &res); 1435 if (error) 1436 return (error); 1437 if (res->type != RES_STRING) 1438 return (EFTYPE); 1439 if (res->u.stringval) 1440 free(res->u.stringval, M_TEMP); 1441 res->u.stringval = malloc(strlen(value) + 1, M_TEMP, M_NOWAIT); 1442 if (res->u.stringval == NULL) 1443 return (ENOMEM); 1444 strcpy(res->u.stringval, value); 1445 return (0); 1446 } 1447 1448 /* 1449 * We use the identify routine to get the hints for all the other devices. 1450 * Strings that are all digits or begin with 0x are integers. 1451 * 1452 * hint.aha.0.bus_speedup=1 1453 * hint.aha.1.irq=10 1454 * hint.wl.0.netid=PLUG 1455 * hint.wl.1.netid=XYZZY 1456 */ 1457 static void 1458 hint_load(char *cp) 1459 { 1460 char *ep, *op, *walker; 1461 int len; 1462 int val; 1463 char name[20]; 1464 int unit; 1465 char resname[255]; 1466 1467 for (ep = cp; *ep != '=' && *ep != '\0'; ep++) 1468 continue; 1469 len = ep - cp; 1470 if (*ep == '=') 1471 ep++; 1472 walker = cp; 1473 walker += 5; 1474 op = walker; 1475 while (*walker && *walker != '.') 1476 walker++; 1477 if (*walker != '.') 1478 return; 1479 if (walker - op > sizeof(name)) 1480 return; 1481 strncpy(name, op, walker - op); 1482 name[walker - op] = '\0'; 1483 walker++; 1484 op = walker; 1485 while (*walker && *walker != '.') 1486 walker++; 1487 if (*walker != '.') 1488 return; 1489 unit = strtoul(op, &walker, 0); 1490 if (*walker != '.') 1491 return; 1492 walker++; 1493 op = walker; 1494 while (*walker && *walker != '=') 1495 walker++; 1496 if (*walker != '=') 1497 return; 1498 if (walker - op > sizeof(resname)) 1499 return; 1500 strncpy(resname, op, walker - op); 1501 resname[walker - op] = '\0'; 1502 walker++; 1503 if (walker != ep) 1504 return; 1505 if (bootverbose) 1506 printf("Setting %s %d %s to ", name, unit, resname); 1507 val = strtoul(ep, &op, 0); 1508 if (*ep != '\0' && *op == '\0') { 1509 resource_set_int(name, unit, resname, val); 1510 if (bootverbose) 1511 printf("%d (int)\n", val); 1512 } else { 1513 resource_set_string(name, unit, resname, ep); 1514 if (bootverbose) 1515 printf("%s (string)\n", ep); 1516 } 1517 } 1518 1519 1520 static void 1521 hints_load(void *dummy __unused) 1522 { 1523 char *cp; 1524 1525 if (hintmode == 2) { /* default hints only */ 1526 cp = kern_envp; 1527 while (cp) { 1528 if (strncmp(cp, "hint.", 5) == 0) { 1529 /* ok, we found a hint, ignore these defaults */ 1530 hintmode = 0; 1531 break; 1532 } 1533 while (*cp != '\0') 1534 cp++; 1535 cp++; 1536 if (*cp == '\0') 1537 break; 1538 } 1539 } 1540 if (hintmode != 0) { 1541 cp = static_hints; 1542 while (cp) { 1543 if (strncmp(cp, "hint.", 5) == 0) 1544 hint_load(cp); 1545 while (*cp != '\0') 1546 cp++; 1547 cp++; 1548 if (*cp == '\0') 1549 break; 1550 } 1551 } 1552 cp = kern_envp; 1553 while (cp) { 1554 if (strncmp(cp, "hint.", 5) == 0) 1555 hint_load(cp); 1556 while (*cp != '\0') 1557 cp++; 1558 cp++; 1559 if (*cp == '\0') 1560 break; 1561 } 1562 hints_loaded++; 1563 } 1564 SYSINIT(cfghints, SI_SUB_KMEM, SI_ORDER_ANY + 60, hints_load, 0) 1565 1566 /*======================================*/ 1567 /* 1568 * Some useful method implementations to make life easier for bus drivers. 1569 */ 1570 1571 void 1572 resource_list_init(struct resource_list *rl) 1573 { 1574 SLIST_INIT(rl); 1575 } 1576 1577 void 1578 resource_list_free(struct resource_list *rl) 1579 { 1580 struct resource_list_entry *rle; 1581 1582 while ((rle = SLIST_FIRST(rl)) != NULL) { 1583 if (rle->res) 1584 panic("resource_list_free: resource entry is busy"); 1585 SLIST_REMOVE_HEAD(rl, link); 1586 free(rle, M_BUS); 1587 } 1588 } 1589 1590 void 1591 resource_list_add(struct resource_list *rl, int type, int rid, 1592 u_long start, u_long end, u_long count) 1593 { 1594 struct resource_list_entry *rle; 1595 1596 rle = resource_list_find(rl, type, rid); 1597 if (!rle) { 1598 rle = malloc(sizeof(struct resource_list_entry), M_BUS, 1599 M_NOWAIT); 1600 if (!rle) 1601 panic("resource_list_add: can't record entry"); 1602 SLIST_INSERT_HEAD(rl, rle, link); 1603 rle->type = type; 1604 rle->rid = rid; 1605 rle->res = NULL; 1606 } 1607 1608 if (rle->res) 1609 panic("resource_list_add: resource entry is busy"); 1610 1611 rle->start = start; 1612 rle->end = end; 1613 rle->count = count; 1614 } 1615 1616 struct resource_list_entry * 1617 resource_list_find(struct resource_list *rl, int type, int rid) 1618 { 1619 struct resource_list_entry *rle; 1620 1621 SLIST_FOREACH(rle, rl, link) { 1622 if (rle->type == type && rle->rid == rid) 1623 return (rle); 1624 } 1625 return (NULL); 1626 } 1627 1628 void 1629 resource_list_delete(struct resource_list *rl, int type, int rid) 1630 { 1631 struct resource_list_entry *rle = resource_list_find(rl, type, rid); 1632 1633 if (rle) { 1634 if (rle->res != NULL) 1635 panic("resource_list_delete: resource has not been released"); 1636 SLIST_REMOVE(rl, rle, resource_list_entry, link); 1637 free(rle, M_BUS); 1638 } 1639 } 1640 1641 struct resource * 1642 resource_list_alloc(struct resource_list *rl, device_t bus, device_t child, 1643 int type, int *rid, u_long start, u_long end, u_long count, u_int flags) 1644 { 1645 struct resource_list_entry *rle = 0; 1646 int passthrough = (device_get_parent(child) != bus); 1647 int isdefault = (start == 0UL && end == ~0UL); 1648 1649 if (passthrough) { 1650 return (BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1651 type, rid, start, end, count, flags)); 1652 } 1653 1654 rle = resource_list_find(rl, type, *rid); 1655 1656 if (!rle) 1657 return (NULL); /* no resource of that type/rid */ 1658 1659 if (rle->res) 1660 panic("resource_list_alloc: resource entry is busy"); 1661 1662 if (isdefault) { 1663 start = rle->start; 1664 count = max(count, rle->count); 1665 end = max(rle->end, start + count - 1); 1666 } 1667 1668 rle->res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1669 type, rid, start, end, count, flags); 1670 1671 /* 1672 * Record the new range. 1673 */ 1674 if (rle->res) { 1675 rle->start = rman_get_start(rle->res); 1676 rle->end = rman_get_end(rle->res); 1677 rle->count = count; 1678 } 1679 1680 return (rle->res); 1681 } 1682 1683 int 1684 resource_list_release(struct resource_list *rl, device_t bus, device_t child, 1685 int type, int rid, struct resource *res) 1686 { 1687 struct resource_list_entry *rle = 0; 1688 int passthrough = (device_get_parent(child) != bus); 1689 int error; 1690 1691 if (passthrough) { 1692 return (BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1693 type, rid, res)); 1694 } 1695 1696 rle = resource_list_find(rl, type, rid); 1697 1698 if (!rle) 1699 panic("resource_list_release: can't find resource"); 1700 if (!rle->res) 1701 panic("resource_list_release: resource entry is not busy"); 1702 1703 error = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1704 type, rid, res); 1705 if (error) 1706 return (error); 1707 1708 rle->res = NULL; 1709 return (0); 1710 } 1711 1712 /* 1713 * Call DEVICE_IDENTIFY for each driver. 1714 */ 1715 int 1716 bus_generic_probe(device_t dev) 1717 { 1718 devclass_t dc = dev->devclass; 1719 driverlink_t dl; 1720 1721 TAILQ_FOREACH(dl, &dc->drivers, link) { 1722 DEVICE_IDENTIFY(dl->driver, dev); 1723 } 1724 1725 return (0); 1726 } 1727 1728 int 1729 bus_generic_attach(device_t dev) 1730 { 1731 device_t child; 1732 1733 TAILQ_FOREACH(child, &dev->children, link) { 1734 device_probe_and_attach(child); 1735 } 1736 1737 return (0); 1738 } 1739 1740 int 1741 bus_generic_detach(device_t dev) 1742 { 1743 device_t child; 1744 int error; 1745 1746 if (dev->state != DS_ATTACHED) 1747 return (EBUSY); 1748 1749 TAILQ_FOREACH(child, &dev->children, link) { 1750 if ((error = device_detach(child)) != 0) 1751 return (error); 1752 } 1753 1754 return (0); 1755 } 1756 1757 int 1758 bus_generic_shutdown(device_t dev) 1759 { 1760 device_t child; 1761 1762 TAILQ_FOREACH(child, &dev->children, link) { 1763 device_shutdown(child); 1764 } 1765 1766 return (0); 1767 } 1768 1769 int 1770 bus_generic_suspend(device_t dev) 1771 { 1772 int error; 1773 device_t child, child2; 1774 1775 TAILQ_FOREACH(child, &dev->children, link) { 1776 error = DEVICE_SUSPEND(child); 1777 if (error) { 1778 for (child2 = TAILQ_FIRST(&dev->children); 1779 child2 && child2 != child; 1780 child2 = TAILQ_NEXT(child2, link)) 1781 DEVICE_RESUME(child2); 1782 return (error); 1783 } 1784 } 1785 return (0); 1786 } 1787 1788 int 1789 bus_generic_resume(device_t dev) 1790 { 1791 device_t child; 1792 1793 TAILQ_FOREACH(child, &dev->children, link) { 1794 DEVICE_RESUME(child); 1795 /* if resume fails, there's nothing we can usefully do... */ 1796 } 1797 return (0); 1798 } 1799 1800 int 1801 bus_print_child_header (device_t dev, device_t child) 1802 { 1803 int retval = 0; 1804 1805 if (device_get_desc(child)) { 1806 retval += device_printf(child, "<%s>", device_get_desc(child)); 1807 } else { 1808 retval += printf("%s", device_get_nameunit(child)); 1809 } 1810 1811 return (retval); 1812 } 1813 1814 int 1815 bus_print_child_footer (device_t dev, device_t child) 1816 { 1817 return (printf(" on %s\n", device_get_nameunit(dev))); 1818 } 1819 1820 int 1821 bus_generic_print_child(device_t dev, device_t child) 1822 { 1823 int retval = 0; 1824 1825 retval += bus_print_child_header(dev, child); 1826 retval += bus_print_child_footer(dev, child); 1827 1828 return (retval); 1829 } 1830 1831 int 1832 bus_generic_read_ivar(device_t dev, device_t child, int index, 1833 uintptr_t * result) 1834 { 1835 return (ENOENT); 1836 } 1837 1838 int 1839 bus_generic_write_ivar(device_t dev, device_t child, int index, 1840 uintptr_t value) 1841 { 1842 return (ENOENT); 1843 } 1844 1845 struct resource_list * 1846 bus_generic_get_resource_list (device_t dev, device_t child) 1847 { 1848 return (NULL); 1849 } 1850 1851 void 1852 bus_generic_driver_added(device_t dev, driver_t *driver) 1853 { 1854 device_t child; 1855 1856 DEVICE_IDENTIFY(driver, dev); 1857 TAILQ_FOREACH(child, &dev->children, link) { 1858 if (child->state == DS_NOTPRESENT) 1859 device_probe_and_attach(child); 1860 } 1861 } 1862 1863 int 1864 bus_generic_setup_intr(device_t dev, device_t child, struct resource *irq, 1865 int flags, driver_intr_t *intr, void *arg, void **cookiep) 1866 { 1867 /* Propagate up the bus hierarchy until someone handles it. */ 1868 if (dev->parent) 1869 return (BUS_SETUP_INTR(dev->parent, child, irq, flags, 1870 intr, arg, cookiep)); 1871 return (EINVAL); 1872 } 1873 1874 int 1875 bus_generic_teardown_intr(device_t dev, device_t child, struct resource *irq, 1876 void *cookie) 1877 { 1878 /* Propagate up the bus hierarchy until someone handles it. */ 1879 if (dev->parent) 1880 return (BUS_TEARDOWN_INTR(dev->parent, child, irq, cookie)); 1881 return (EINVAL); 1882 } 1883 1884 struct resource * 1885 bus_generic_alloc_resource(device_t dev, device_t child, int type, int *rid, 1886 u_long start, u_long end, u_long count, u_int flags) 1887 { 1888 /* Propagate up the bus hierarchy until someone handles it. */ 1889 if (dev->parent) 1890 return (BUS_ALLOC_RESOURCE(dev->parent, child, type, rid, 1891 start, end, count, flags)); 1892 return (NULL); 1893 } 1894 1895 int 1896 bus_generic_release_resource(device_t dev, device_t child, int type, int rid, 1897 struct resource *r) 1898 { 1899 /* Propagate up the bus hierarchy until someone handles it. */ 1900 if (dev->parent) 1901 return (BUS_RELEASE_RESOURCE(dev->parent, child, type, rid, 1902 r)); 1903 return (EINVAL); 1904 } 1905 1906 int 1907 bus_generic_activate_resource(device_t dev, device_t child, int type, int rid, 1908 struct resource *r) 1909 { 1910 /* Propagate up the bus hierarchy until someone handles it. */ 1911 if (dev->parent) 1912 return (BUS_ACTIVATE_RESOURCE(dev->parent, child, type, rid, 1913 r)); 1914 return (EINVAL); 1915 } 1916 1917 int 1918 bus_generic_deactivate_resource(device_t dev, device_t child, int type, 1919 int rid, struct resource *r) 1920 { 1921 /* Propagate up the bus hierarchy until someone handles it. */ 1922 if (dev->parent) 1923 return (BUS_DEACTIVATE_RESOURCE(dev->parent, child, type, rid, 1924 r)); 1925 return (EINVAL); 1926 } 1927 1928 int 1929 bus_generic_rl_get_resource (device_t dev, device_t child, int type, int rid, 1930 u_long *startp, u_long *countp) 1931 { 1932 struct resource_list * rl = NULL; 1933 struct resource_list_entry * rle = NULL; 1934 1935 rl = BUS_GET_RESOURCE_LIST(dev, child); 1936 if (!rl) 1937 return (EINVAL); 1938 1939 rle = resource_list_find(rl, type, rid); 1940 if (!rle) 1941 return (ENOENT); 1942 1943 if (startp) 1944 *startp = rle->start; 1945 if (countp) 1946 *countp = rle->count; 1947 1948 return (0); 1949 } 1950 1951 int 1952 bus_generic_rl_set_resource (device_t dev, device_t child, int type, int rid, 1953 u_long start, u_long count) 1954 { 1955 struct resource_list * rl = NULL; 1956 1957 rl = BUS_GET_RESOURCE_LIST(dev, child); 1958 if (!rl) 1959 return (EINVAL); 1960 1961 resource_list_add(rl, type, rid, start, (start + count - 1), count); 1962 1963 return (0); 1964 } 1965 1966 void 1967 bus_generic_rl_delete_resource (device_t dev, device_t child, int type, int rid) 1968 { 1969 struct resource_list * rl = NULL; 1970 1971 rl = BUS_GET_RESOURCE_LIST(dev, child); 1972 if (!rl) 1973 return; 1974 1975 resource_list_delete(rl, type, rid); 1976 1977 return; 1978 } 1979 1980 int 1981 bus_generic_rl_release_resource (device_t dev, device_t child, int type, 1982 int rid, struct resource *r) 1983 { 1984 struct resource_list * rl = NULL; 1985 1986 rl = BUS_GET_RESOURCE_LIST(dev, child); 1987 if (!rl) 1988 return (EINVAL); 1989 1990 return (resource_list_release(rl, dev, child, type, rid, r)); 1991 } 1992 1993 struct resource * 1994 bus_generic_rl_alloc_resource (device_t dev, device_t child, int type, 1995 int *rid, u_long start, u_long end, u_long count, u_int flags) 1996 { 1997 struct resource_list * rl = NULL; 1998 1999 rl = BUS_GET_RESOURCE_LIST(dev, child); 2000 if (!rl) 2001 return (NULL); 2002 2003 return (resource_list_alloc(rl, dev, child, type, rid, 2004 start, end, count, flags)); 2005 } 2006 2007 /* 2008 * Some convenience functions to make it easier for drivers to use the 2009 * resource-management functions. All these really do is hide the 2010 * indirection through the parent's method table, making for slightly 2011 * less-wordy code. In the future, it might make sense for this code 2012 * to maintain some sort of a list of resources allocated by each device. 2013 */ 2014 struct resource * 2015 bus_alloc_resource(device_t dev, int type, int *rid, u_long start, u_long end, 2016 u_long count, u_int flags) 2017 { 2018 if (dev->parent == 0) 2019 return (0); 2020 return (BUS_ALLOC_RESOURCE(dev->parent, dev, type, rid, start, end, 2021 count, flags)); 2022 } 2023 2024 int 2025 bus_activate_resource(device_t dev, int type, int rid, struct resource *r) 2026 { 2027 if (dev->parent == 0) 2028 return (EINVAL); 2029 return (BUS_ACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 2030 } 2031 2032 int 2033 bus_deactivate_resource(device_t dev, int type, int rid, struct resource *r) 2034 { 2035 if (dev->parent == 0) 2036 return (EINVAL); 2037 return (BUS_DEACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 2038 } 2039 2040 int 2041 bus_release_resource(device_t dev, int type, int rid, struct resource *r) 2042 { 2043 if (dev->parent == 0) 2044 return (EINVAL); 2045 return (BUS_RELEASE_RESOURCE(dev->parent, dev, type, rid, r)); 2046 } 2047 2048 int 2049 bus_setup_intr(device_t dev, struct resource *r, int flags, 2050 driver_intr_t handler, void *arg, void **cookiep) 2051 { 2052 if (dev->parent == 0) 2053 return (EINVAL); 2054 return (BUS_SETUP_INTR(dev->parent, dev, r, flags, 2055 handler, arg, cookiep)); 2056 } 2057 2058 int 2059 bus_teardown_intr(device_t dev, struct resource *r, void *cookie) 2060 { 2061 if (dev->parent == 0) 2062 return (EINVAL); 2063 return (BUS_TEARDOWN_INTR(dev->parent, dev, r, cookie)); 2064 } 2065 2066 int 2067 bus_set_resource(device_t dev, int type, int rid, 2068 u_long start, u_long count) 2069 { 2070 return BUS_SET_RESOURCE(device_get_parent(dev), dev, type, rid, 2071 start, count); 2072 } 2073 2074 int 2075 bus_get_resource(device_t dev, int type, int rid, 2076 u_long *startp, u_long *countp) 2077 { 2078 return (BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2079 startp, countp)); 2080 } 2081 2082 u_long 2083 bus_get_resource_start(device_t dev, int type, int rid) 2084 { 2085 u_long start, count; 2086 int error; 2087 2088 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2089 &start, &count); 2090 if (error) 2091 return (0); 2092 return (start); 2093 } 2094 2095 u_long 2096 bus_get_resource_count(device_t dev, int type, int rid) 2097 { 2098 u_long start, count; 2099 int error; 2100 2101 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2102 &start, &count); 2103 if (error) 2104 return (0); 2105 return (count); 2106 } 2107 2108 void 2109 bus_delete_resource(device_t dev, int type, int rid) 2110 { 2111 BUS_DELETE_RESOURCE(device_get_parent(dev), dev, type, rid); 2112 } 2113 2114 static int 2115 root_print_child(device_t dev, device_t child) 2116 { 2117 int retval = 0; 2118 2119 retval += bus_print_child_header(dev, child); 2120 retval += printf("\n"); 2121 2122 return (retval); 2123 } 2124 2125 static int 2126 root_setup_intr(device_t dev, device_t child, driver_intr_t *intr, void *arg, 2127 void **cookiep) 2128 { 2129 /* 2130 * If an interrupt mapping gets to here something bad has happened. 2131 */ 2132 panic("root_setup_intr"); 2133 } 2134 2135 static kobj_method_t root_methods[] = { 2136 /* Device interface */ 2137 KOBJMETHOD(device_shutdown, bus_generic_shutdown), 2138 KOBJMETHOD(device_suspend, bus_generic_suspend), 2139 KOBJMETHOD(device_resume, bus_generic_resume), 2140 2141 /* Bus interface */ 2142 KOBJMETHOD(bus_print_child, root_print_child), 2143 KOBJMETHOD(bus_read_ivar, bus_generic_read_ivar), 2144 KOBJMETHOD(bus_write_ivar, bus_generic_write_ivar), 2145 KOBJMETHOD(bus_setup_intr, root_setup_intr), 2146 2147 { 0, 0 } 2148 }; 2149 2150 static driver_t root_driver = { 2151 "root", 2152 root_methods, 2153 1, /* no softc */ 2154 }; 2155 2156 device_t root_bus; 2157 devclass_t root_devclass; 2158 2159 static int 2160 root_bus_module_handler(module_t mod, int what, void* arg) 2161 { 2162 switch (what) { 2163 case MOD_LOAD: 2164 TAILQ_INIT(&bus_data_devices); 2165 kobj_class_compile((kobj_class_t) &root_driver); 2166 root_bus = make_device(NULL, "root", 0); 2167 root_bus->desc = "System root bus"; 2168 kobj_init((kobj_t) root_bus, (kobj_class_t) &root_driver); 2169 root_bus->driver = &root_driver; 2170 root_bus->state = DS_ATTACHED; 2171 root_devclass = devclass_find_internal("root", FALSE); 2172 return (0); 2173 2174 case MOD_SHUTDOWN: 2175 device_shutdown(root_bus); 2176 return (0); 2177 } 2178 2179 return (0); 2180 } 2181 2182 static moduledata_t root_bus_mod = { 2183 "rootbus", 2184 root_bus_module_handler, 2185 0 2186 }; 2187 DECLARE_MODULE(rootbus, root_bus_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 2188 2189 void 2190 root_bus_configure(void) 2191 { 2192 device_t dev; 2193 2194 PDEBUG((".")); 2195 2196 TAILQ_FOREACH(dev, &root_bus->children, link) { 2197 device_probe_and_attach(dev); 2198 } 2199 } 2200 2201 int 2202 driver_module_handler(module_t mod, int what, void *arg) 2203 { 2204 int error, i; 2205 struct driver_module_data *dmd; 2206 devclass_t bus_devclass; 2207 2208 dmd = (struct driver_module_data *)arg; 2209 bus_devclass = devclass_find_internal(dmd->dmd_busname, TRUE); 2210 error = 0; 2211 2212 switch (what) { 2213 case MOD_LOAD: 2214 if (dmd->dmd_chainevh) 2215 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2216 2217 for (i = 0; !error && i < dmd->dmd_ndrivers; i++) { 2218 PDEBUG(("Loading module: driver %s on bus %s", 2219 DRIVERNAME(dmd->dmd_drivers[i]), dmd->dmd_busname)); 2220 error = devclass_add_driver(bus_devclass, 2221 dmd->dmd_drivers[i]); 2222 } 2223 if (error) 2224 break; 2225 2226 /* 2227 * The drivers loaded in this way are assumed to all 2228 * implement the same devclass. 2229 */ 2230 *dmd->dmd_devclass = 2231 devclass_find_internal(dmd->dmd_drivers[0]->name, TRUE); 2232 break; 2233 2234 case MOD_UNLOAD: 2235 for (i = 0; !error && i < dmd->dmd_ndrivers; i++) { 2236 PDEBUG(("Unloading module: driver %s from bus %s", 2237 DRIVERNAME(dmd->dmd_drivers[i]), 2238 dmd->dmd_busname)); 2239 error = devclass_delete_driver(bus_devclass, 2240 dmd->dmd_drivers[i]); 2241 } 2242 2243 if (!error && dmd->dmd_chainevh) 2244 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2245 break; 2246 } 2247 2248 return (error); 2249 } 2250 2251 #ifdef BUS_DEBUG 2252 2253 /* the _short versions avoid iteration by not calling anything that prints 2254 * more than oneliners. I love oneliners. 2255 */ 2256 2257 static void 2258 print_device_short(device_t dev, int indent) 2259 { 2260 if (!dev) 2261 return; 2262 2263 indentprintf(("device %d: <%s> %sparent,%schildren,%s%s%s%s,%sivars,%ssoftc,busy=%d\n", 2264 dev->unit, dev->desc, 2265 (dev->parent? "":"no "), 2266 (TAILQ_EMPTY(&dev->children)? "no ":""), 2267 (dev->flags&DF_ENABLED? "enabled,":"disabled,"), 2268 (dev->flags&DF_FIXEDCLASS? "fixed,":""), 2269 (dev->flags&DF_WILDCARD? "wildcard,":""), 2270 (dev->flags&DF_DESCMALLOCED? "descmalloced,":""), 2271 (dev->ivars? "":"no "), 2272 (dev->softc? "":"no "), 2273 dev->busy)); 2274 } 2275 2276 static void 2277 print_device(device_t dev, int indent) 2278 { 2279 if (!dev) 2280 return; 2281 2282 print_device_short(dev, indent); 2283 2284 indentprintf(("Parent:\n")); 2285 print_device_short(dev->parent, indent+1); 2286 indentprintf(("Driver:\n")); 2287 print_driver_short(dev->driver, indent+1); 2288 indentprintf(("Devclass:\n")); 2289 print_devclass_short(dev->devclass, indent+1); 2290 } 2291 2292 void 2293 print_device_tree_short(device_t dev, int indent) 2294 /* print the device and all its children (indented) */ 2295 { 2296 device_t child; 2297 2298 if (!dev) 2299 return; 2300 2301 print_device_short(dev, indent); 2302 2303 TAILQ_FOREACH(child, &dev->children, link) { 2304 print_device_tree_short(child, indent+1); 2305 } 2306 } 2307 2308 void 2309 print_device_tree(device_t dev, int indent) 2310 /* print the device and all its children (indented) */ 2311 { 2312 device_t child; 2313 2314 if (!dev) 2315 return; 2316 2317 print_device(dev, indent); 2318 2319 TAILQ_FOREACH(child, &dev->children, link) { 2320 print_device_tree(child, indent+1); 2321 } 2322 } 2323 2324 static void 2325 print_driver_short(driver_t *driver, int indent) 2326 { 2327 if (!driver) 2328 return; 2329 2330 indentprintf(("driver %s: softc size = %d\n", 2331 driver->name, driver->size)); 2332 } 2333 2334 static void 2335 print_driver(driver_t *driver, int indent) 2336 { 2337 if (!driver) 2338 return; 2339 2340 print_driver_short(driver, indent); 2341 } 2342 2343 2344 static void 2345 print_driver_list(driver_list_t drivers, int indent) 2346 { 2347 driverlink_t driver; 2348 2349 TAILQ_FOREACH(driver, &drivers, link) { 2350 print_driver(driver->driver, indent); 2351 } 2352 } 2353 2354 static void 2355 print_devclass_short(devclass_t dc, int indent) 2356 { 2357 if ( !dc ) 2358 return; 2359 2360 indentprintf(("devclass %s: max units = %d\n", dc->name, dc->maxunit)); 2361 } 2362 2363 static void 2364 print_devclass(devclass_t dc, int indent) 2365 { 2366 int i; 2367 2368 if ( !dc ) 2369 return; 2370 2371 print_devclass_short(dc, indent); 2372 indentprintf(("Drivers:\n")); 2373 print_driver_list(dc->drivers, indent+1); 2374 2375 indentprintf(("Devices:\n")); 2376 for (i = 0; i < dc->maxunit; i++) 2377 if (dc->devices[i]) 2378 print_device(dc->devices[i], indent+1); 2379 } 2380 2381 void 2382 print_devclass_list_short(void) 2383 { 2384 devclass_t dc; 2385 2386 printf("Short listing of devclasses, drivers & devices:\n"); 2387 TAILQ_FOREACH(dc, &devclasses, link) { 2388 print_devclass_short(dc, 0); 2389 } 2390 } 2391 2392 void 2393 print_devclass_list(void) 2394 { 2395 devclass_t dc; 2396 2397 printf("Full listing of devclasses, drivers & devices:\n"); 2398 TAILQ_FOREACH(dc, &devclasses, link) { 2399 print_devclass(dc, 0); 2400 } 2401 } 2402 2403 #endif 2404 2405 /* 2406 * User-space access to the device tree. 2407 * 2408 * We implement a small set of nodes: 2409 * 2410 * hw.bus Single integer read method to obtain the 2411 * current generation count. 2412 * hw.bus.devices Reads the entire device tree in flat space. 2413 * hw.bus.rman Resource manager interface 2414 * 2415 * We might like to add the ability to scan devclasses and/or drivers to 2416 * determine what else is currently loaded/available. 2417 */ 2418 SYSCTL_NODE(_hw, OID_AUTO, bus, CTLFLAG_RW, NULL, NULL); 2419 2420 static int 2421 sysctl_bus(SYSCTL_HANDLER_ARGS) 2422 { 2423 struct u_businfo ubus; 2424 2425 ubus.ub_version = BUS_USER_VERSION; 2426 ubus.ub_generation = bus_data_generation; 2427 2428 return (SYSCTL_OUT(req, &ubus, sizeof(ubus))); 2429 } 2430 SYSCTL_NODE(_hw_bus, OID_AUTO, info, CTLFLAG_RW, sysctl_bus, 2431 "bus-related data"); 2432 2433 static int 2434 sysctl_devices(SYSCTL_HANDLER_ARGS) 2435 { 2436 int *name = (int *)arg1; 2437 u_int namelen = arg2; 2438 int index; 2439 struct device *dev; 2440 struct u_device udev; /* XXX this is a bit big */ 2441 int error; 2442 2443 if (namelen != 2) 2444 return (EINVAL); 2445 2446 if (bus_data_generation_check(name[0])) 2447 return (EINVAL); 2448 2449 index = name[1]; 2450 2451 /* 2452 * Scan the list of devices, looking for the requested index. 2453 */ 2454 TAILQ_FOREACH(dev, &bus_data_devices, devlink) { 2455 if (index-- == 0) 2456 break; 2457 } 2458 if (dev == NULL) 2459 return (ENOENT); 2460 2461 /* 2462 * Populate the return array. 2463 */ 2464 udev.dv_handle = (uintptr_t)dev; 2465 udev.dv_parent = (uintptr_t)dev->parent; 2466 if (dev->nameunit == NULL) { 2467 udev.dv_name[0] = 0; 2468 } else { 2469 snprintf(udev.dv_name, 32, "%s", dev->nameunit); 2470 } 2471 if (dev->desc == NULL) { 2472 udev.dv_desc[0] = 0; 2473 } else { 2474 snprintf(udev.dv_desc, 32, "%s", dev->desc); 2475 } 2476 if ((dev->driver == NULL) || (dev->driver->name == NULL)) { 2477 udev.dv_drivername[0] = 0; 2478 } else { 2479 snprintf(udev.dv_drivername, 32, "%s", dev->driver->name); 2480 } 2481 error = SYSCTL_OUT(req, &udev, sizeof(udev)); 2482 return (error); 2483 } 2484 2485 SYSCTL_NODE(_hw_bus, OID_AUTO, devices, CTLFLAG_RD, sysctl_devices, 2486 "system device tree"); 2487 2488 /* 2489 * Sysctl interface for scanning the resource lists. 2490 * 2491 * We take two input parameters; the index into the list of resource 2492 * managers, and the resource offset into the list. 2493 */ 2494 static int 2495 sysctl_rman(SYSCTL_HANDLER_ARGS) 2496 { 2497 int *name = (int *)arg1; 2498 u_int namelen = arg2; 2499 int rman_idx, res_idx; 2500 struct rman *rm; 2501 struct resource *res; 2502 struct u_rman urm; 2503 struct u_resource ures; 2504 int error; 2505 2506 if (namelen != 3) 2507 return (EINVAL); 2508 2509 if (bus_data_generation_check(name[0])) 2510 return (EINVAL); 2511 rman_idx = name[1]; 2512 res_idx = name[2]; 2513 2514 /* 2515 * Find the indexed resource manager 2516 */ 2517 TAILQ_FOREACH(rm, &rman_head, rm_link) { 2518 if (rman_idx-- == 0) 2519 break; 2520 } 2521 if (rm == NULL) 2522 return (ENOENT); 2523 2524 /* 2525 * If the resource index is -1, we want details on the 2526 * resource manager. 2527 */ 2528 if (res_idx == -1) { 2529 urm.rm_handle = (uintptr_t)rm; 2530 snprintf(urm.rm_descr, RM_TEXTLEN, "%s", rm->rm_descr); 2531 urm.rm_descr[RM_TEXTLEN - 1] = '\0'; 2532 urm.rm_start = rm->rm_start; 2533 urm.rm_size = rm->rm_end - rm->rm_start + 1; 2534 urm.rm_type = rm->rm_type; 2535 2536 error = SYSCTL_OUT(req, &urm, sizeof(urm)); 2537 return (error); 2538 } 2539 2540 /* 2541 * Find the indexed resource and return it. 2542 */ 2543 TAILQ_FOREACH(res, &rm->rm_list, r_link) { 2544 if (res_idx-- == 0) { 2545 ures.r_handle = (uintptr_t)res; 2546 ures.r_parent = (uintptr_t)res->r_rm; 2547 ures.r_device = (uintptr_t)res->r_dev; 2548 if (res->r_dev != NULL) { 2549 if (device_get_name(res->r_dev) != NULL) { 2550 snprintf(ures.r_devname, RM_TEXTLEN, 2551 "%s%d", 2552 device_get_name(res->r_dev), 2553 device_get_unit(res->r_dev)); 2554 } else { 2555 snprintf(ures.r_devname, RM_TEXTLEN, 2556 "nomatch"); 2557 } 2558 } else { 2559 ures.r_devname[0] = 0; 2560 } 2561 ures.r_start = res->r_start; 2562 ures.r_size = res->r_end - res->r_start + 1; 2563 ures.r_flags = res->r_flags; 2564 2565 error = SYSCTL_OUT(req, &ures, sizeof(ures)); 2566 return (error); 2567 } 2568 } 2569 return (ENOENT); 2570 } 2571 2572 SYSCTL_NODE(_hw_bus, OID_AUTO, rman, CTLFLAG_RD, sysctl_rman, 2573 "kernel resource manager"); 2574 2575 int 2576 bus_data_generation_check(int generation) 2577 { 2578 if (generation != bus_data_generation) 2579 return (1); 2580 2581 /* XXX generate optimised lists here? */ 2582 return (0); 2583 } 2584 2585 void 2586 bus_data_generation_update(void) 2587 { 2588 bus_data_generation++; 2589 } 2590