Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/kern/subr_bus.c
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1 /* 2 * Copyright (c) 1997,1998 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include "opt_bus.h" 30 31 #include <sys/param.h> 32 #include <sys/queue.h> 33 #include <sys/malloc.h> 34 #include <sys/kernel.h> 35 #include <sys/module.h> 36 #ifdef DEVICE_SYSCTLS 37 #include <sys/sysctl.h> 38 #endif 39 #include <sys/bus_private.h> 40 #include <sys/systm.h> 41 #include <machine/bus.h> 42 #include <sys/rman.h> 43 #include <machine/stdarg.h> /* for device_printf() */ 44 45 MALLOC_DEFINE(M_BUS, "bus", "Bus data structures"); 46 47 #ifdef BUS_DEBUG 48 #define PDEBUG(a) (printf(__FUNCTION__ ":%d: ", __LINE__), printf a, printf("\n")) 49 #define DEVICENAME(d) ((d)? device_get_name(d): "no device") 50 #define DRIVERNAME(d) ((d)? d->name : "no driver") 51 #define DEVCLANAME(d) ((d)? d->name : "no devclass") 52 53 /* Produce the indenting, indent*2 spaces plus a '.' ahead of that to 54 * prevent syslog from deleting initial spaces 55 */ 56 #define indentprintf(p) do { int iJ; printf("."); for (iJ=0; iJ<indent; iJ++) printf(" "); printf p ; } while(0) 57 58 static void print_method_list(device_method_t *m, int indent); 59 static void print_device_ops(device_ops_t ops, int indent); 60 static void print_device_short(device_t dev, int indent); 61 static void print_device(device_t dev, int indent); 62 void print_device_tree_short(device_t dev, int indent); 63 void print_device_tree(device_t dev, int indent); 64 static void print_driver_short(driver_t *driver, int indent); 65 static void print_driver(driver_t *driver, int indent); 66 static void print_driver_list(driver_list_t drivers, int indent); 67 static void print_devclass_short(devclass_t dc, int indent); 68 static void print_devclass(devclass_t dc, int indent); 69 void print_devclass_list_short(void); 70 void print_devclass_list(void); 71 72 #else 73 /* Make the compiler ignore the function calls */ 74 #define PDEBUG(a) /* nop */ 75 #define DEVICENAME(d) /* nop */ 76 #define DRIVERNAME(d) /* nop */ 77 #define DEVCLANAME(d) /* nop */ 78 79 #define print_method_list(m,i) /* nop */ 80 #define print_device_ops(o,i) /* nop */ 81 #define print_device_short(d,i) /* nop */ 82 #define print_device(d,i) /* nop */ 83 #define print_device_tree_short(d,i) /* nop */ 84 #define print_device_tree(d,i) /* nop */ 85 #define print_driver_short(d,i) /* nop */ 86 #define print_driver(d,i) /* nop */ 87 #define print_driver_list(d,i) /* nop */ 88 #define print_devclass_short(d,i) /* nop */ 89 #define print_devclass(d,i) /* nop */ 90 #define print_devclass_list_short() /* nop */ 91 #define print_devclass_list() /* nop */ 92 #endif 93 94 #ifdef DEVICE_SYSCTLS 95 static void device_register_oids(device_t dev); 96 static void device_unregister_oids(device_t dev); 97 #endif 98 99 /* 100 * Method table handling 101 */ 102 static int error_method(void); 103 static int next_method_offset = 1; 104 105 LIST_HEAD(methodlist, method) methods; 106 struct method { 107 LIST_ENTRY(method) link; /* linked list of methods */ 108 int offset; /* offset in method table */ 109 int refs; /* count of device_op_desc users */ 110 devop_t deflt; /* default implementation */ 111 char* name; /* unique name of method */ 112 }; 113 114 static void 115 register_method(struct device_op_desc *desc) 116 { 117 struct method* m; 118 119 if (desc->method) { 120 desc->method->refs++; 121 return; 122 } 123 124 /* 125 * Make sure that desc->deflt is always valid to simplify dispatch. 126 */ 127 if (!desc->deflt) 128 desc->deflt = error_method; 129 130 for (m = LIST_FIRST(&methods); m; m = LIST_NEXT(m, link)) { 131 if (!strcmp(m->name, desc->name)) { 132 desc->offset = m->offset; 133 desc->method = m; 134 m->refs++; 135 PDEBUG(("method %p has the same name, %s, with offset %d", 136 (void *)m, desc->name, desc->offset)); 137 return; 138 } 139 } 140 141 m = (struct method *) malloc(sizeof(struct method) 142 + strlen(desc->name) + 1, 143 M_BUS, M_NOWAIT); 144 if (!m) 145 panic("register_method: out of memory"); 146 bzero(m, sizeof(struct method) + strlen(desc->name) + 1); 147 m->offset = next_method_offset++; 148 m->refs = 1; 149 m->deflt = desc->deflt; 150 m->name = (char*) (m + 1); 151 strcpy(m->name, desc->name); 152 LIST_INSERT_HEAD(&methods, m, link); 153 154 desc->offset = m->offset; 155 desc->method = m; 156 } 157 158 static void 159 unregister_method(struct device_op_desc *desc) 160 { 161 struct method *m = desc->method; 162 m->refs--; 163 if (m->refs == 0) { 164 PDEBUG(("method %s, reached refcount 0", desc->name)); 165 LIST_REMOVE(m, link); 166 free(m, M_BUS); 167 desc->method = 0; 168 } 169 } 170 171 static int error_method(void) 172 { 173 return ENXIO; 174 } 175 176 static struct device_ops null_ops = { 177 1, 178 { error_method } 179 }; 180 181 static void 182 compile_methods(driver_t *driver) 183 { 184 device_ops_t ops; 185 struct device_method *m; 186 struct method *cm; 187 int i; 188 189 /* 190 * First register any methods which need it. 191 */ 192 for (i = 0, m = driver->methods; m->desc; i++, m++) 193 register_method(m->desc); 194 195 /* 196 * Then allocate the compiled op table. 197 */ 198 ops = malloc(sizeof(struct device_ops) + (next_method_offset-1) * sizeof(devop_t), 199 M_BUS, M_NOWAIT); 200 if (!ops) 201 panic("compile_methods: out of memory"); 202 bzero(ops, sizeof(struct device_ops) + (next_method_offset-1) * sizeof(devop_t)); 203 204 ops->maxoffset = next_method_offset; 205 /* Fill in default methods and then overwrite with driver methods */ 206 for (i = 0; i < next_method_offset; i++) 207 ops->methods[i] = error_method; 208 for (cm = LIST_FIRST(&methods); cm; cm = LIST_NEXT(cm, link)) { 209 if (cm->deflt) 210 ops->methods[cm->offset] = cm->deflt; 211 } 212 for (i = 0, m = driver->methods; m->desc; i++, m++) 213 ops->methods[m->desc->offset] = m->func; 214 PDEBUG(("%s has %d method%s, wasting %d bytes", 215 DRIVERNAME(driver), i, (i==1?"":"s"), 216 (next_method_offset-i)*sizeof(devop_t))); 217 218 driver->ops = ops; 219 } 220 221 static void 222 free_methods(driver_t *driver) 223 { 224 int i; 225 struct device_method *m; 226 227 /* 228 * Unregister any methods which are no longer used. 229 */ 230 for (i = 0, m = driver->methods; m->desc; i++, m++) 231 unregister_method(m->desc); 232 233 /* 234 * Free memory and clean up. 235 */ 236 free(driver->ops, M_BUS); 237 driver->ops = 0; 238 } 239 240 /* 241 * Devclass implementation 242 */ 243 244 static devclass_list_t devclasses = TAILQ_HEAD_INITIALIZER(devclasses); 245 246 static devclass_t 247 devclass_find_internal(const char *classname, int create) 248 { 249 devclass_t dc; 250 251 PDEBUG(("looking for %s", classname)); 252 if (!classname) 253 return NULL; 254 255 for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) 256 if (!strcmp(dc->name, classname)) 257 return dc; 258 259 PDEBUG(("%s not found%s", classname, (create? ", creating": ""))); 260 if (create) { 261 dc = malloc(sizeof(struct devclass) + strlen(classname) + 1, 262 M_BUS, M_NOWAIT); 263 if (!dc) 264 return NULL; 265 bzero(dc, sizeof(struct devclass) + strlen(classname) + 1); 266 dc->name = (char*) (dc + 1); 267 strcpy(dc->name, classname); 268 dc->devices = NULL; 269 dc->maxunit = 0; 270 TAILQ_INIT(&dc->drivers); 271 TAILQ_INSERT_TAIL(&devclasses, dc, link); 272 } 273 274 return dc; 275 } 276 277 devclass_t 278 devclass_create(const char *classname) 279 { 280 return devclass_find_internal(classname, TRUE); 281 } 282 283 devclass_t 284 devclass_find(const char *classname) 285 { 286 return devclass_find_internal(classname, FALSE); 287 } 288 289 int 290 devclass_add_driver(devclass_t dc, driver_t *driver) 291 { 292 driverlink_t dl; 293 int i; 294 295 PDEBUG(("%s", DRIVERNAME(driver))); 296 297 dl = malloc(sizeof *dl, M_BUS, M_NOWAIT); 298 if (!dl) 299 return ENOMEM; 300 bzero(dl, sizeof *dl); 301 302 /* 303 * Compile the driver's methods. 304 */ 305 if (!driver->ops) 306 compile_methods(driver); 307 308 /* 309 * Make sure the devclass which the driver is implementing exists. 310 */ 311 devclass_find_internal(driver->name, TRUE); 312 313 dl->driver = driver; 314 TAILQ_INSERT_TAIL(&dc->drivers, dl, link); 315 driver->refs++; 316 317 /* 318 * Call BUS_DRIVER_ADDED for any existing busses in this class. 319 */ 320 for (i = 0; i < dc->maxunit; i++) 321 if (dc->devices[i]) 322 BUS_DRIVER_ADDED(dc->devices[i], driver); 323 324 return 0; 325 } 326 327 int 328 devclass_delete_driver(devclass_t busclass, driver_t *driver) 329 { 330 devclass_t dc = devclass_find(driver->name); 331 driverlink_t dl; 332 device_t dev; 333 int i; 334 int error; 335 336 PDEBUG(("%s from devclass %s", driver->name, DEVCLANAME(busclass))); 337 338 if (!dc) 339 return 0; 340 341 /* 342 * Find the link structure in the bus' list of drivers. 343 */ 344 for (dl = TAILQ_FIRST(&busclass->drivers); dl; 345 dl = TAILQ_NEXT(dl, link)) { 346 if (dl->driver == driver) 347 break; 348 } 349 350 if (!dl) { 351 PDEBUG(("%s not found in %s list", driver->name, busclass->name)); 352 return ENOENT; 353 } 354 355 /* 356 * Disassociate from any devices. We iterate through all the 357 * devices in the devclass of the driver and detach any which are 358 * using the driver and which have a parent in the devclass which 359 * we are deleting from. 360 * 361 * Note that since a driver can be in multiple devclasses, we 362 * should not detach devices which are not children of devices in 363 * the affected devclass. 364 */ 365 for (i = 0; i < dc->maxunit; i++) { 366 if (dc->devices[i]) { 367 dev = dc->devices[i]; 368 if (dev->driver == driver 369 && dev->parent && dev->parent->devclass == busclass) { 370 if ((error = device_detach(dev)) != 0) 371 return error; 372 device_set_driver(dev, NULL); 373 } 374 } 375 } 376 377 TAILQ_REMOVE(&busclass->drivers, dl, link); 378 free(dl, M_BUS); 379 380 driver->refs--; 381 if (driver->refs == 0) 382 free_methods(driver); 383 384 return 0; 385 } 386 387 static driverlink_t 388 devclass_find_driver_internal(devclass_t dc, const char *classname) 389 { 390 driverlink_t dl; 391 392 PDEBUG(("%s in devclass %s", classname, DEVCLANAME(dc))); 393 394 for (dl = TAILQ_FIRST(&dc->drivers); dl; dl = TAILQ_NEXT(dl, link)) { 395 if (!strcmp(dl->driver->name, classname)) 396 return dl; 397 } 398 399 PDEBUG(("not found")); 400 return NULL; 401 } 402 403 driver_t * 404 devclass_find_driver(devclass_t dc, const char *classname) 405 { 406 driverlink_t dl; 407 408 dl = devclass_find_driver_internal(dc, classname); 409 if (dl) 410 return dl->driver; 411 else 412 return NULL; 413 } 414 415 const char * 416 devclass_get_name(devclass_t dc) 417 { 418 return dc->name; 419 } 420 421 device_t 422 devclass_get_device(devclass_t dc, int unit) 423 { 424 if (dc == NULL || unit < 0 || unit >= dc->maxunit) 425 return NULL; 426 return dc->devices[unit]; 427 } 428 429 void * 430 devclass_get_softc(devclass_t dc, int unit) 431 { 432 device_t dev; 433 434 dev = devclass_get_device(dc, unit); 435 if (!dev) 436 return (NULL); 437 438 return (device_get_softc(dev)); 439 } 440 441 int 442 devclass_get_devices(devclass_t dc, device_t **devlistp, int *devcountp) 443 { 444 int i; 445 int count; 446 device_t *list; 447 448 count = 0; 449 for (i = 0; i < dc->maxunit; i++) 450 if (dc->devices[i]) 451 count++; 452 453 list = malloc(count * sizeof(device_t), M_TEMP, M_NOWAIT); 454 if (!list) 455 return ENOMEM; 456 bzero(list, count * sizeof(device_t)); 457 458 count = 0; 459 for (i = 0; i < dc->maxunit; i++) 460 if (dc->devices[i]) { 461 list[count] = dc->devices[i]; 462 count++; 463 } 464 465 *devlistp = list; 466 *devcountp = count; 467 468 return 0; 469 } 470 471 int 472 devclass_get_maxunit(devclass_t dc) 473 { 474 return dc->maxunit; 475 } 476 477 static int 478 devclass_alloc_unit(devclass_t dc, int *unitp) 479 { 480 int unit = *unitp; 481 482 PDEBUG(("unit %d in devclass %s", unit, DEVCLANAME(dc))); 483 484 /* If we have been given a wired unit number, check for existing device */ 485 if (unit != -1) { 486 if (unit >= 0 && unit < dc->maxunit && dc->devices[unit] != NULL) { 487 if (bootverbose) 488 printf("%s-: %s%d exists, using next available unit number\n", 489 dc->name, dc->name, unit); 490 /* find the next available slot */ 491 while (++unit < dc->maxunit && dc->devices[unit] != NULL) 492 ; 493 } 494 } 495 else { 496 /* Unwired device, find the next available slot for it */ 497 unit = 0; 498 while (unit < dc->maxunit && dc->devices[unit] != NULL) 499 unit++; 500 } 501 502 /* 503 * We've selected a unit beyond the length of the table, so let's extend 504 * the table to make room for all units up to and including this one. 505 */ 506 if (unit >= dc->maxunit) { 507 device_t *newlist; 508 int newsize; 509 510 newsize = roundup((unit + 1), MINALLOCSIZE / sizeof(device_t)); 511 newlist = malloc(sizeof(device_t) * newsize, M_BUS, M_NOWAIT); 512 if (!newlist) 513 return ENOMEM; 514 bcopy(dc->devices, newlist, sizeof(device_t) * dc->maxunit); 515 bzero(newlist + dc->maxunit, 516 sizeof(device_t) * (newsize - dc->maxunit)); 517 if (dc->devices) 518 free(dc->devices, M_BUS); 519 dc->devices = newlist; 520 dc->maxunit = newsize; 521 } 522 PDEBUG(("now: unit %d in devclass %s", unit, DEVCLANAME(dc))); 523 524 *unitp = unit; 525 return 0; 526 } 527 528 static int 529 devclass_add_device(devclass_t dc, device_t dev) 530 { 531 int buflen, error; 532 533 PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); 534 535 buflen = strlen(dc->name) + 5; 536 dev->nameunit = malloc(buflen, M_BUS, M_NOWAIT); 537 if (!dev->nameunit) 538 return ENOMEM; 539 bzero(dev->nameunit, buflen); 540 541 if ((error = devclass_alloc_unit(dc, &dev->unit)) != 0) { 542 free(dev->nameunit, M_BUS); 543 dev->nameunit = NULL; 544 return error; 545 } 546 dc->devices[dev->unit] = dev; 547 dev->devclass = dc; 548 snprintf(dev->nameunit, buflen, "%s%d", dc->name, dev->unit); 549 550 #ifdef DEVICE_SYSCTLS 551 device_register_oids(dev); 552 #endif 553 554 return 0; 555 } 556 557 static int 558 devclass_delete_device(devclass_t dc, device_t dev) 559 { 560 if (!dc || !dev) 561 return 0; 562 563 PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); 564 565 if (dev->devclass != dc 566 || dc->devices[dev->unit] != dev) 567 panic("devclass_delete_device: inconsistent device class"); 568 dc->devices[dev->unit] = NULL; 569 if (dev->flags & DF_WILDCARD) 570 dev->unit = -1; 571 dev->devclass = NULL; 572 free(dev->nameunit, M_BUS); 573 dev->nameunit = NULL; 574 575 #ifdef DEVICE_SYSCTLS 576 device_unregister_oids(dev); 577 #endif 578 579 return 0; 580 } 581 582 static device_t 583 make_device(device_t parent, const char *name, int unit) 584 { 585 device_t dev; 586 devclass_t dc; 587 588 PDEBUG(("%s at %s as unit %d", name, DEVICENAME(parent), unit)); 589 590 if (name) { 591 dc = devclass_find_internal(name, TRUE); 592 if (!dc) { 593 printf("make_device: can't find device class %s\n", name); 594 return NULL; 595 } 596 } else 597 dc = NULL; 598 599 dev = malloc(sizeof(struct device), M_BUS, M_NOWAIT); 600 if (!dev) 601 return 0; 602 bzero(dev, sizeof(struct device)); 603 604 dev->parent = parent; 605 TAILQ_INIT(&dev->children); 606 dev->ops = &null_ops; 607 dev->driver = NULL; 608 dev->devclass = NULL; 609 dev->unit = unit; 610 dev->nameunit = NULL; 611 dev->desc = NULL; 612 dev->busy = 0; 613 dev->devflags = 0; 614 dev->flags = DF_ENABLED; 615 dev->order = 0; 616 if (unit == -1) 617 dev->flags |= DF_WILDCARD; 618 if (name) { 619 dev->flags |= DF_FIXEDCLASS; 620 devclass_add_device(dc, dev); 621 } 622 dev->ivars = NULL; 623 dev->softc = NULL; 624 625 dev->state = DS_NOTPRESENT; 626 627 return dev; 628 } 629 630 static int 631 device_print_child(device_t dev, device_t child) 632 { 633 int retval = 0; 634 635 if (device_is_alive(child)) { 636 retval += BUS_PRINT_CHILD(dev, child); 637 } else 638 retval += device_printf(child, " not found\n"); 639 640 return (retval); 641 } 642 643 device_t 644 device_add_child(device_t dev, const char *name, int unit) 645 { 646 return device_add_child_ordered(dev, 0, name, unit); 647 } 648 649 device_t 650 device_add_child_ordered(device_t dev, int order, const char *name, int unit) 651 { 652 device_t child; 653 device_t place; 654 655 PDEBUG(("%s at %s with order %d as unit %d", 656 name, DEVICENAME(dev), order, unit)); 657 658 child = make_device(dev, name, unit); 659 if (child == NULL) 660 return child; 661 child->order = order; 662 663 TAILQ_FOREACH(place, &dev->children, link) 664 if (place->order > order) 665 break; 666 667 if (place) { 668 /* 669 * The device 'place' is the first device whose order is 670 * greater than the new child. 671 */ 672 TAILQ_INSERT_BEFORE(place, child, link); 673 } else { 674 /* 675 * The new child's order is greater or equal to the order of 676 * any existing device. Add the child to the tail of the list. 677 */ 678 TAILQ_INSERT_TAIL(&dev->children, child, link); 679 } 680 681 return child; 682 } 683 684 int 685 device_delete_child(device_t dev, device_t child) 686 { 687 int error; 688 device_t grandchild; 689 690 PDEBUG(("%s from %s", DEVICENAME(child), DEVICENAME(dev))); 691 692 /* remove children first */ 693 while ( (grandchild = TAILQ_FIRST(&child->children)) ) { 694 error = device_delete_child(child, grandchild); 695 if (error) 696 return error; 697 } 698 699 if ((error = device_detach(child)) != 0) 700 return error; 701 if (child->devclass) 702 devclass_delete_device(child->devclass, child); 703 TAILQ_REMOVE(&dev->children, child, link); 704 device_set_desc(child, NULL); 705 free(child, M_BUS); 706 707 return 0; 708 } 709 710 /* 711 * Find only devices attached to this bus. 712 */ 713 device_t 714 device_find_child(device_t dev, const char *classname, int unit) 715 { 716 devclass_t dc; 717 device_t child; 718 719 dc = devclass_find(classname); 720 if (!dc) 721 return NULL; 722 723 child = devclass_get_device(dc, unit); 724 if (child && child->parent == dev) 725 return child; 726 return NULL; 727 } 728 729 static driverlink_t 730 first_matching_driver(devclass_t dc, device_t dev) 731 { 732 if (dev->devclass) 733 return devclass_find_driver_internal(dc, dev->devclass->name); 734 else 735 return TAILQ_FIRST(&dc->drivers); 736 } 737 738 static driverlink_t 739 next_matching_driver(devclass_t dc, device_t dev, driverlink_t last) 740 { 741 if (dev->devclass) { 742 driverlink_t dl; 743 for (dl = TAILQ_NEXT(last, link); dl; dl = TAILQ_NEXT(dl, link)) 744 if (!strcmp(dev->devclass->name, dl->driver->name)) 745 return dl; 746 return NULL; 747 } else 748 return TAILQ_NEXT(last, link); 749 } 750 751 static int 752 device_probe_child(device_t dev, device_t child) 753 { 754 devclass_t dc; 755 driverlink_t best = 0; 756 driverlink_t dl; 757 int result, pri = 0; 758 int hasclass = (child->devclass != 0); 759 760 dc = dev->devclass; 761 if (!dc) 762 panic("device_probe_child: parent device has no devclass"); 763 764 if (child->state == DS_ALIVE) 765 return 0; 766 767 for (dl = first_matching_driver(dc, child); 768 dl; 769 dl = next_matching_driver(dc, child, dl)) { 770 PDEBUG(("Trying %s", DRIVERNAME(dl->driver))); 771 device_set_driver(child, dl->driver); 772 if (!hasclass) 773 device_set_devclass(child, dl->driver->name); 774 result = DEVICE_PROBE(child); 775 if (!hasclass) 776 device_set_devclass(child, 0); 777 778 /* 779 * If the driver returns SUCCESS, there can be no higher match 780 * for this device. 781 */ 782 if (result == 0) { 783 best = dl; 784 pri = 0; 785 break; 786 } 787 788 /* 789 * The driver returned an error so it certainly doesn't match. 790 */ 791 if (result > 0) { 792 device_set_driver(child, 0); 793 continue; 794 } 795 796 /* 797 * A priority lower than SUCCESS, remember the best matching 798 * driver. Initialise the value of pri for the first match. 799 */ 800 if (best == 0 || result > pri) { 801 best = dl; 802 pri = result; 803 continue; 804 } 805 } 806 807 /* 808 * If we found a driver, change state and initialise the devclass. 809 */ 810 if (best) { 811 if (!child->devclass) 812 device_set_devclass(child, best->driver->name); 813 device_set_driver(child, best->driver); 814 if (pri < 0) { 815 /* 816 * A bit bogus. Call the probe method again to make sure 817 * that we have the right description. 818 */ 819 DEVICE_PROBE(child); 820 } 821 child->state = DS_ALIVE; 822 return 0; 823 } 824 825 return ENXIO; 826 } 827 828 device_t 829 device_get_parent(device_t dev) 830 { 831 return dev->parent; 832 } 833 834 int 835 device_get_children(device_t dev, device_t **devlistp, int *devcountp) 836 { 837 int count; 838 device_t child; 839 device_t *list; 840 841 count = 0; 842 for (child = TAILQ_FIRST(&dev->children); child; 843 child = TAILQ_NEXT(child, link)) 844 count++; 845 846 list = malloc(count * sizeof(device_t), M_TEMP, M_NOWAIT); 847 if (!list) 848 return ENOMEM; 849 bzero(list, count * sizeof(device_t)); 850 851 count = 0; 852 for (child = TAILQ_FIRST(&dev->children); child; 853 child = TAILQ_NEXT(child, link)) { 854 list[count] = child; 855 count++; 856 } 857 858 *devlistp = list; 859 *devcountp = count; 860 861 return 0; 862 } 863 864 driver_t * 865 device_get_driver(device_t dev) 866 { 867 return dev->driver; 868 } 869 870 devclass_t 871 device_get_devclass(device_t dev) 872 { 873 return dev->devclass; 874 } 875 876 const char * 877 device_get_name(device_t dev) 878 { 879 if (dev->devclass) 880 return devclass_get_name(dev->devclass); 881 return NULL; 882 } 883 884 const char * 885 device_get_nameunit(device_t dev) 886 { 887 return dev->nameunit; 888 } 889 890 int 891 device_get_unit(device_t dev) 892 { 893 return dev->unit; 894 } 895 896 const char * 897 device_get_desc(device_t dev) 898 { 899 return dev->desc; 900 } 901 902 u_int32_t 903 device_get_flags(device_t dev) 904 { 905 return dev->devflags; 906 } 907 908 int 909 device_print_prettyname(device_t dev) 910 { 911 const char *name = device_get_name(dev); 912 913 if (name == 0) 914 return printf("unknown: "); 915 else 916 return printf("%s%d: ", name, device_get_unit(dev)); 917 } 918 919 int 920 device_printf(device_t dev, const char * fmt, ...) 921 { 922 va_list ap; 923 int retval; 924 925 retval = device_print_prettyname(dev); 926 va_start(ap, fmt); 927 retval += vprintf(fmt, ap); 928 va_end(ap); 929 return retval; 930 } 931 932 static void 933 device_set_desc_internal(device_t dev, const char* desc, int copy) 934 { 935 if (dev->desc && (dev->flags & DF_DESCMALLOCED)) { 936 free(dev->desc, M_BUS); 937 dev->flags &= ~DF_DESCMALLOCED; 938 dev->desc = NULL; 939 } 940 941 if (copy && desc) { 942 dev->desc = malloc(strlen(desc) + 1, M_BUS, M_NOWAIT); 943 if (dev->desc) { 944 strcpy(dev->desc, desc); 945 dev->flags |= DF_DESCMALLOCED; 946 } 947 } else 948 /* Avoid a -Wcast-qual warning */ 949 dev->desc = (char *)(uintptr_t) desc; 950 951 #ifdef DEVICE_SYSCTLS 952 { 953 struct sysctl_oid *oid = &dev->oid[1]; 954 oid->oid_arg1 = dev->desc ? dev->desc : ""; 955 oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0; 956 } 957 #endif 958 } 959 960 void 961 device_set_desc(device_t dev, const char* desc) 962 { 963 device_set_desc_internal(dev, desc, FALSE); 964 } 965 966 void 967 device_set_desc_copy(device_t dev, const char* desc) 968 { 969 device_set_desc_internal(dev, desc, TRUE); 970 } 971 972 void 973 device_set_flags(device_t dev, u_int32_t flags) 974 { 975 dev->devflags = flags; 976 } 977 978 void * 979 device_get_softc(device_t dev) 980 { 981 return dev->softc; 982 } 983 984 void 985 device_set_softc(device_t dev, void *softc) 986 { 987 if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC)) 988 free(dev->softc, M_BUS); 989 dev->softc = softc; 990 if (dev->softc) 991 dev->flags |= DF_EXTERNALSOFTC; 992 else 993 dev->flags &= ~DF_EXTERNALSOFTC; 994 } 995 996 void * 997 device_get_ivars(device_t dev) 998 { 999 return dev->ivars; 1000 } 1001 1002 void 1003 device_set_ivars(device_t dev, void * ivars) 1004 { 1005 if (!dev) 1006 return; 1007 1008 dev->ivars = ivars; 1009 1010 return; 1011 } 1012 1013 device_state_t 1014 device_get_state(device_t dev) 1015 { 1016 return dev->state; 1017 } 1018 1019 void 1020 device_enable(device_t dev) 1021 { 1022 dev->flags |= DF_ENABLED; 1023 } 1024 1025 void 1026 device_disable(device_t dev) 1027 { 1028 dev->flags &= ~DF_ENABLED; 1029 } 1030 1031 void 1032 device_busy(device_t dev) 1033 { 1034 if (dev->state < DS_ATTACHED) 1035 panic("device_busy: called for unattached device"); 1036 if (dev->busy == 0 && dev->parent) 1037 device_busy(dev->parent); 1038 dev->busy++; 1039 dev->state = DS_BUSY; 1040 } 1041 1042 void 1043 device_unbusy(device_t dev) 1044 { 1045 if (dev->state != DS_BUSY) 1046 panic("device_unbusy: called for non-busy device"); 1047 dev->busy--; 1048 if (dev->busy == 0) { 1049 if (dev->parent) 1050 device_unbusy(dev->parent); 1051 dev->state = DS_ATTACHED; 1052 } 1053 } 1054 1055 void 1056 device_quiet(device_t dev) 1057 { 1058 dev->flags |= DF_QUIET; 1059 } 1060 1061 void 1062 device_verbose(device_t dev) 1063 { 1064 dev->flags &= ~DF_QUIET; 1065 } 1066 1067 int 1068 device_is_quiet(device_t dev) 1069 { 1070 return (dev->flags & DF_QUIET) != 0; 1071 } 1072 1073 int 1074 device_is_enabled(device_t dev) 1075 { 1076 return (dev->flags & DF_ENABLED) != 0; 1077 } 1078 1079 int 1080 device_is_alive(device_t dev) 1081 { 1082 return dev->state >= DS_ALIVE; 1083 } 1084 1085 int 1086 device_is_attached(device_t dev) 1087 { 1088 return (dev->state >= DS_ATTACHED); 1089 } 1090 1091 int 1092 device_set_devclass(device_t dev, const char *classname) 1093 { 1094 devclass_t dc; 1095 1096 if (!classname) { 1097 if (dev->devclass) 1098 devclass_delete_device(dev->devclass, dev); 1099 return 0; 1100 } 1101 1102 if (dev->devclass) { 1103 printf("device_set_devclass: device class already set\n"); 1104 return EINVAL; 1105 } 1106 1107 dc = devclass_find_internal(classname, TRUE); 1108 if (!dc) 1109 return ENOMEM; 1110 1111 return devclass_add_device(dc, dev); 1112 } 1113 1114 int 1115 device_set_driver(device_t dev, driver_t *driver) 1116 { 1117 if (dev->state >= DS_ATTACHED) 1118 return EBUSY; 1119 1120 if (dev->driver == driver) 1121 return 0; 1122 1123 if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC)) { 1124 free(dev->softc, M_BUS); 1125 dev->softc = NULL; 1126 } 1127 dev->ops = &null_ops; 1128 dev->driver = driver; 1129 if (driver) { 1130 dev->ops = driver->ops; 1131 if (!(dev->flags & DF_EXTERNALSOFTC)) { 1132 dev->softc = malloc(driver->softc, M_BUS, M_NOWAIT); 1133 if (!dev->softc) { 1134 dev->ops = &null_ops; 1135 dev->driver = NULL; 1136 return ENOMEM; 1137 } 1138 bzero(dev->softc, driver->softc); 1139 } 1140 } 1141 return 0; 1142 } 1143 1144 int 1145 device_probe_and_attach(device_t dev) 1146 { 1147 device_t bus = dev->parent; 1148 int error = 0; 1149 int hasclass = (dev->devclass != 0); 1150 1151 if (dev->state >= DS_ALIVE) 1152 return 0; 1153 1154 if (dev->flags & DF_ENABLED) { 1155 error = device_probe_child(bus, dev); 1156 if (!error) { 1157 if (!device_is_quiet(dev)) 1158 device_print_child(bus, dev); 1159 error = DEVICE_ATTACH(dev); 1160 if (!error) 1161 dev->state = DS_ATTACHED; 1162 else { 1163 printf("device_probe_and_attach: %s%d attach returned %d\n", 1164 dev->driver->name, dev->unit, error); 1165 /* Unset the class that was set in device_probe_child */ 1166 if (!hasclass) 1167 device_set_devclass(dev, 0); 1168 device_set_driver(dev, NULL); 1169 dev->state = DS_NOTPRESENT; 1170 } 1171 } else { 1172 if (!(dev->flags & DF_DONENOMATCH)) { 1173 BUS_PROBE_NOMATCH(bus, dev); 1174 dev->flags |= DF_DONENOMATCH; 1175 } 1176 } 1177 } else { 1178 if (bootverbose) { 1179 device_print_prettyname(dev); 1180 printf("not probed (disabled)\n"); 1181 } 1182 } 1183 1184 return error; 1185 } 1186 1187 int 1188 device_detach(device_t dev) 1189 { 1190 int error; 1191 1192 PDEBUG(("%s", DEVICENAME(dev))); 1193 if (dev->state == DS_BUSY) 1194 return EBUSY; 1195 if (dev->state != DS_ATTACHED) 1196 return 0; 1197 1198 if ((error = DEVICE_DETACH(dev)) != 0) 1199 return error; 1200 device_printf(dev, "detached\n"); 1201 if (dev->parent) 1202 BUS_CHILD_DETACHED(dev->parent, dev); 1203 1204 if (!(dev->flags & DF_FIXEDCLASS)) 1205 devclass_delete_device(dev->devclass, dev); 1206 1207 dev->state = DS_NOTPRESENT; 1208 device_set_driver(dev, NULL); 1209 1210 return 0; 1211 } 1212 1213 int 1214 device_shutdown(device_t dev) 1215 { 1216 if (dev->state < DS_ATTACHED) 1217 return 0; 1218 return DEVICE_SHUTDOWN(dev); 1219 } 1220 1221 int 1222 device_set_unit(device_t dev, int unit) 1223 { 1224 devclass_t dc; 1225 int err; 1226 1227 dc = device_get_devclass(dev); 1228 if (unit < dc->maxunit && dc->devices[unit]) 1229 return EBUSY; 1230 err = devclass_delete_device(dc, dev); 1231 if (err) 1232 return err; 1233 dev->unit = unit; 1234 err = devclass_add_device(dc, dev); 1235 if (err) 1236 return err; 1237 return 0; 1238 } 1239 1240 #ifdef DEVICE_SYSCTLS 1241 1242 /* 1243 * Sysctl nodes for devices. 1244 */ 1245 1246 SYSCTL_NODE(_hw, OID_AUTO, devices, CTLFLAG_RW, 0, "A list of all devices"); 1247 1248 static int 1249 sysctl_handle_children(SYSCTL_HANDLER_ARGS) 1250 { 1251 device_t dev = arg1; 1252 device_t child; 1253 int first = 1, error = 0; 1254 1255 for (child = TAILQ_FIRST(&dev->children); child; 1256 child = TAILQ_NEXT(child, link)) { 1257 if (child->nameunit) { 1258 if (!first) { 1259 error = SYSCTL_OUT(req, ",", 1); 1260 if (error) return error; 1261 } else { 1262 first = 0; 1263 } 1264 error = SYSCTL_OUT(req, child->nameunit, strlen(child->nameunit)); 1265 if (error) return error; 1266 } 1267 } 1268 1269 error = SYSCTL_OUT(req, "", 1); 1270 1271 return error; 1272 } 1273 1274 static int 1275 sysctl_handle_state(SYSCTL_HANDLER_ARGS) 1276 { 1277 device_t dev = arg1; 1278 1279 switch (dev->state) { 1280 case DS_NOTPRESENT: 1281 return SYSCTL_OUT(req, "notpresent", sizeof("notpresent")); 1282 case DS_ALIVE: 1283 return SYSCTL_OUT(req, "alive", sizeof("alive")); 1284 case DS_ATTACHED: 1285 return SYSCTL_OUT(req, "attached", sizeof("attached")); 1286 case DS_BUSY: 1287 return SYSCTL_OUT(req, "busy", sizeof("busy")); 1288 } 1289 1290 return 0; 1291 } 1292 1293 static void 1294 device_register_oids(device_t dev) 1295 { 1296 struct sysctl_oid* oid; 1297 1298 oid = &dev->oid[0]; 1299 bzero(oid, sizeof(*oid)); 1300 oid->oid_parent = &sysctl__hw_devices_children; 1301 oid->oid_number = OID_AUTO; 1302 oid->oid_kind = CTLTYPE_NODE | CTLFLAG_RW; 1303 oid->oid_arg1 = &dev->oidlist[0]; 1304 oid->oid_arg2 = 0; 1305 oid->oid_name = dev->nameunit; 1306 oid->oid_handler = 0; 1307 oid->oid_fmt = "N"; 1308 SLIST_INIT(&dev->oidlist[0]); 1309 sysctl_register_oid(oid); 1310 1311 oid = &dev->oid[1]; 1312 bzero(oid, sizeof(*oid)); 1313 oid->oid_parent = &dev->oidlist[0]; 1314 oid->oid_number = OID_AUTO; 1315 oid->oid_kind = CTLTYPE_STRING | CTLFLAG_RD; 1316 oid->oid_arg1 = dev->desc ? dev->desc : ""; 1317 oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0; 1318 oid->oid_name = "desc"; 1319 oid->oid_handler = sysctl_handle_string; 1320 oid->oid_fmt = "A"; 1321 sysctl_register_oid(oid); 1322 1323 oid = &dev->oid[2]; 1324 bzero(oid, sizeof(*oid)); 1325 oid->oid_parent = &dev->oidlist[0]; 1326 oid->oid_number = OID_AUTO; 1327 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD; 1328 oid->oid_arg1 = dev; 1329 oid->oid_arg2 = 0; 1330 oid->oid_name = "children"; 1331 oid->oid_handler = sysctl_handle_children; 1332 oid->oid_fmt = "A"; 1333 sysctl_register_oid(oid); 1334 1335 oid = &dev->oid[3]; 1336 bzero(oid, sizeof(*oid)); 1337 oid->oid_parent = &dev->oidlist[0]; 1338 oid->oid_number = OID_AUTO; 1339 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD; 1340 oid->oid_arg1 = dev; 1341 oid->oid_arg2 = 0; 1342 oid->oid_name = "state"; 1343 oid->oid_handler = sysctl_handle_state; 1344 oid->oid_fmt = "A"; 1345 sysctl_register_oid(oid); 1346 } 1347 1348 static void 1349 device_unregister_oids(device_t dev) 1350 { 1351 sysctl_unregister_oid(&dev->oid[0]); 1352 sysctl_unregister_oid(&dev->oid[1]); 1353 sysctl_unregister_oid(&dev->oid[2]); 1354 } 1355 1356 #endif 1357 1358 /*======================================*/ 1359 /* 1360 * Access functions for device resources. 1361 */ 1362 1363 /* Supplied by config(8) in ioconf.c */ 1364 extern struct config_device config_devtab[]; 1365 extern int devtab_count; 1366 1367 /* Runtime version */ 1368 struct config_device *devtab = config_devtab; 1369 1370 static int 1371 resource_new_name(const char *name, int unit) 1372 { 1373 struct config_device *new; 1374 1375 new = malloc((devtab_count + 1) * sizeof(*new), M_TEMP, M_NOWAIT); 1376 if (new == NULL) 1377 return -1; 1378 if (devtab && devtab_count > 0) 1379 bcopy(devtab, new, devtab_count * sizeof(*new)); 1380 bzero(&new[devtab_count], sizeof(*new)); 1381 new[devtab_count].name = malloc(strlen(name) + 1, M_TEMP, M_NOWAIT); 1382 if (new[devtab_count].name == NULL) { 1383 free(new, M_TEMP); 1384 return -1; 1385 } 1386 strcpy(new[devtab_count].name, name); 1387 new[devtab_count].unit = unit; 1388 new[devtab_count].resource_count = 0; 1389 new[devtab_count].resources = NULL; 1390 devtab = new; 1391 return devtab_count++; 1392 } 1393 1394 static int 1395 resource_new_resname(int j, const char *resname, resource_type type) 1396 { 1397 struct config_resource *new; 1398 int i; 1399 1400 i = devtab[j].resource_count; 1401 new = malloc((i + 1) * sizeof(*new), M_TEMP, M_NOWAIT); 1402 if (new == NULL) 1403 return -1; 1404 if (devtab[j].resources && i > 0) 1405 bcopy(devtab[j].resources, new, i * sizeof(*new)); 1406 bzero(&new[i], sizeof(*new)); 1407 new[i].name = malloc(strlen(resname) + 1, M_TEMP, M_NOWAIT); 1408 if (new[i].name == NULL) { 1409 free(new, M_TEMP); 1410 return -1; 1411 } 1412 strcpy(new[i].name, resname); 1413 new[i].type = type; 1414 if (devtab[j].resources) 1415 free(devtab[j].resources, M_TEMP); 1416 devtab[j].resources = new; 1417 devtab[j].resource_count = i + 1; 1418 return i; 1419 } 1420 1421 static int 1422 resource_match_string(int i, const char *resname, const char *value) 1423 { 1424 int j; 1425 struct config_resource *res; 1426 1427 for (j = 0, res = devtab[i].resources; 1428 j < devtab[i].resource_count; j++, res++) 1429 if (!strcmp(res->name, resname) 1430 && res->type == RES_STRING 1431 && !strcmp(res->u.stringval, value)) 1432 return j; 1433 return -1; 1434 } 1435 1436 static int 1437 resource_find(const char *name, int unit, const char *resname, 1438 struct config_resource **result) 1439 { 1440 int i, j; 1441 struct config_resource *res; 1442 1443 /* 1444 * First check specific instances, then generic. 1445 */ 1446 for (i = 0; i < devtab_count; i++) { 1447 if (devtab[i].unit < 0) 1448 continue; 1449 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1450 res = devtab[i].resources; 1451 for (j = 0; j < devtab[i].resource_count; j++, res++) 1452 if (!strcmp(res->name, resname)) { 1453 *result = res; 1454 return 0; 1455 } 1456 } 1457 } 1458 for (i = 0; i < devtab_count; i++) { 1459 if (devtab[i].unit >= 0) 1460 continue; 1461 /* XXX should this `&& devtab[i].unit == unit' be here? */ 1462 /* XXX if so, then the generic match does nothing */ 1463 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1464 res = devtab[i].resources; 1465 for (j = 0; j < devtab[i].resource_count; j++, res++) 1466 if (!strcmp(res->name, resname)) { 1467 *result = res; 1468 return 0; 1469 } 1470 } 1471 } 1472 return ENOENT; 1473 } 1474 1475 int 1476 resource_int_value(const char *name, int unit, const char *resname, int *result) 1477 { 1478 int error; 1479 struct config_resource *res; 1480 1481 if ((error = resource_find(name, unit, resname, &res)) != 0) 1482 return error; 1483 if (res->type != RES_INT) 1484 return EFTYPE; 1485 *result = res->u.intval; 1486 return 0; 1487 } 1488 1489 int 1490 resource_long_value(const char *name, int unit, const char *resname, 1491 long *result) 1492 { 1493 int error; 1494 struct config_resource *res; 1495 1496 if ((error = resource_find(name, unit, resname, &res)) != 0) 1497 return error; 1498 if (res->type != RES_LONG) 1499 return EFTYPE; 1500 *result = res->u.longval; 1501 return 0; 1502 } 1503 1504 int 1505 resource_string_value(const char *name, int unit, const char *resname, 1506 char **result) 1507 { 1508 int error; 1509 struct config_resource *res; 1510 1511 if ((error = resource_find(name, unit, resname, &res)) != 0) 1512 return error; 1513 if (res->type != RES_STRING) 1514 return EFTYPE; 1515 *result = res->u.stringval; 1516 return 0; 1517 } 1518 1519 int 1520 resource_query_string(int i, const char *resname, const char *value) 1521 { 1522 if (i < 0) 1523 i = 0; 1524 else 1525 i = i + 1; 1526 for (; i < devtab_count; i++) 1527 if (resource_match_string(i, resname, value) >= 0) 1528 return i; 1529 return -1; 1530 } 1531 1532 int 1533 resource_locate(int i, const char *resname) 1534 { 1535 if (i < 0) 1536 i = 0; 1537 else 1538 i = i + 1; 1539 for (; i < devtab_count; i++) 1540 if (!strcmp(devtab[i].name, resname)) 1541 return i; 1542 return -1; 1543 } 1544 1545 int 1546 resource_count(void) 1547 { 1548 return devtab_count; 1549 } 1550 1551 char * 1552 resource_query_name(int i) 1553 { 1554 return devtab[i].name; 1555 } 1556 1557 int 1558 resource_query_unit(int i) 1559 { 1560 return devtab[i].unit; 1561 } 1562 1563 static int 1564 resource_create(const char *name, int unit, const char *resname, 1565 resource_type type, struct config_resource **result) 1566 { 1567 int i, j; 1568 struct config_resource *res = NULL; 1569 1570 for (i = 0; i < devtab_count; i++) { 1571 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 1572 res = devtab[i].resources; 1573 break; 1574 } 1575 } 1576 if (res == NULL) { 1577 i = resource_new_name(name, unit); 1578 if (i < 0) 1579 return ENOMEM; 1580 res = devtab[i].resources; 1581 } 1582 for (j = 0; j < devtab[i].resource_count; j++, res++) { 1583 if (!strcmp(res->name, resname)) { 1584 *result = res; 1585 return 0; 1586 } 1587 } 1588 j = resource_new_resname(i, resname, type); 1589 if (j < 0) 1590 return ENOMEM; 1591 res = &devtab[i].resources[j]; 1592 *result = res; 1593 return 0; 1594 } 1595 1596 int 1597 resource_set_int(const char *name, int unit, const char *resname, int value) 1598 { 1599 int error; 1600 struct config_resource *res; 1601 1602 error = resource_create(name, unit, resname, RES_INT, &res); 1603 if (error) 1604 return error; 1605 if (res->type != RES_INT) 1606 return EFTYPE; 1607 res->u.intval = value; 1608 return 0; 1609 } 1610 1611 int 1612 resource_set_long(const char *name, int unit, const char *resname, long value) 1613 { 1614 int error; 1615 struct config_resource *res; 1616 1617 error = resource_create(name, unit, resname, RES_LONG, &res); 1618 if (error) 1619 return error; 1620 if (res->type != RES_LONG) 1621 return EFTYPE; 1622 res->u.longval = value; 1623 return 0; 1624 } 1625 1626 int 1627 resource_set_string(const char *name, int unit, const char *resname, 1628 const char *value) 1629 { 1630 int error; 1631 struct config_resource *res; 1632 1633 error = resource_create(name, unit, resname, RES_STRING, &res); 1634 if (error) 1635 return error; 1636 if (res->type != RES_STRING) 1637 return EFTYPE; 1638 if (res->u.stringval) 1639 free(res->u.stringval, M_TEMP); 1640 res->u.stringval = malloc(strlen(value) + 1, M_TEMP, M_NOWAIT); 1641 if (res->u.stringval == NULL) 1642 return ENOMEM; 1643 strcpy(res->u.stringval, value); 1644 return 0; 1645 } 1646 1647 1648 static void 1649 resource_cfgload(void *dummy __unused) 1650 { 1651 struct config_resource *res, *cfgres; 1652 int i, j; 1653 int error; 1654 char *name, *resname; 1655 int unit; 1656 resource_type type; 1657 char *stringval; 1658 int config_devtab_count; 1659 1660 config_devtab_count = devtab_count; 1661 devtab = NULL; 1662 devtab_count = 0; 1663 1664 for (i = 0; i < config_devtab_count; i++) { 1665 name = config_devtab[i].name; 1666 unit = config_devtab[i].unit; 1667 1668 for (j = 0; j < config_devtab[i].resource_count; j++) { 1669 cfgres = config_devtab[i].resources; 1670 resname = cfgres[j].name; 1671 type = cfgres[j].type; 1672 error = resource_create(name, unit, resname, type, 1673 &res); 1674 if (error) { 1675 printf("create resource %s%d: error %d\n", 1676 name, unit, error); 1677 continue; 1678 } 1679 if (res->type != type) { 1680 printf("type mismatch %s%d: %d != %d\n", 1681 name, unit, res->type, type); 1682 continue; 1683 } 1684 switch (type) { 1685 case RES_INT: 1686 res->u.intval = cfgres[j].u.intval; 1687 break; 1688 case RES_LONG: 1689 res->u.longval = cfgres[j].u.longval; 1690 break; 1691 case RES_STRING: 1692 if (res->u.stringval) 1693 free(res->u.stringval, M_TEMP); 1694 stringval = cfgres[j].u.stringval; 1695 res->u.stringval = malloc(strlen(stringval) + 1, 1696 M_TEMP, M_NOWAIT); 1697 if (res->u.stringval == NULL) 1698 break; 1699 strcpy(res->u.stringval, stringval); 1700 break; 1701 default: 1702 panic("unknown resource type %d\n", type); 1703 } 1704 } 1705 } 1706 } 1707 SYSINIT(cfgload, SI_SUB_KMEM, SI_ORDER_ANY + 50, resource_cfgload, 0) 1708 1709 1710 /*======================================*/ 1711 /* 1712 * Some useful method implementations to make life easier for bus drivers. 1713 */ 1714 1715 void 1716 resource_list_init(struct resource_list *rl) 1717 { 1718 SLIST_INIT(rl); 1719 } 1720 1721 void 1722 resource_list_free(struct resource_list *rl) 1723 { 1724 struct resource_list_entry *rle; 1725 1726 while ((rle = SLIST_FIRST(rl)) != NULL) { 1727 if (rle->res) 1728 panic("resource_list_free: resource entry is busy"); 1729 SLIST_REMOVE_HEAD(rl, link); 1730 free(rle, M_BUS); 1731 } 1732 } 1733 1734 void 1735 resource_list_add(struct resource_list *rl, 1736 int type, int rid, 1737 u_long start, u_long end, u_long count) 1738 { 1739 struct resource_list_entry *rle; 1740 1741 rle = resource_list_find(rl, type, rid); 1742 if (!rle) { 1743 rle = malloc(sizeof(struct resource_list_entry), M_BUS, M_NOWAIT); 1744 if (!rle) 1745 panic("resource_list_add: can't record entry"); 1746 SLIST_INSERT_HEAD(rl, rle, link); 1747 rle->type = type; 1748 rle->rid = rid; 1749 rle->res = NULL; 1750 } 1751 1752 if (rle->res) 1753 panic("resource_list_add: resource entry is busy"); 1754 1755 rle->start = start; 1756 rle->end = end; 1757 rle->count = count; 1758 } 1759 1760 struct resource_list_entry* 1761 resource_list_find(struct resource_list *rl, 1762 int type, int rid) 1763 { 1764 struct resource_list_entry *rle; 1765 1766 SLIST_FOREACH(rle, rl, link) 1767 if (rle->type == type && rle->rid == rid) 1768 return rle; 1769 return NULL; 1770 } 1771 1772 void 1773 resource_list_delete(struct resource_list *rl, 1774 int type, int rid) 1775 { 1776 struct resource_list_entry *rle = resource_list_find(rl, type, rid); 1777 1778 if (rle) { 1779 SLIST_REMOVE(rl, rle, resource_list_entry, link); 1780 free(rle, M_BUS); 1781 } 1782 } 1783 1784 struct resource * 1785 resource_list_alloc(struct resource_list *rl, 1786 device_t bus, device_t child, 1787 int type, int *rid, 1788 u_long start, u_long end, 1789 u_long count, u_int flags) 1790 { 1791 struct resource_list_entry *rle = 0; 1792 int passthrough = (device_get_parent(child) != bus); 1793 int isdefault = (start == 0UL && end == ~0UL); 1794 1795 if (passthrough) { 1796 return BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1797 type, rid, 1798 start, end, count, flags); 1799 } 1800 1801 rle = resource_list_find(rl, type, *rid); 1802 1803 if (!rle) 1804 return 0; /* no resource of that type/rid */ 1805 if (rle->res) 1806 panic("resource_list_alloc: resource entry is busy"); 1807 1808 if (isdefault) { 1809 start = rle->start; 1810 count = max(count, rle->count); 1811 end = max(rle->end, start + count - 1); 1812 } 1813 1814 rle->res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 1815 type, rid, start, end, count, flags); 1816 1817 /* 1818 * Record the new range. 1819 */ 1820 if (rle->res) { 1821 rle->start = rman_get_start(rle->res); 1822 rle->end = rman_get_end(rle->res); 1823 rle->count = count; 1824 } 1825 1826 return rle->res; 1827 } 1828 1829 int 1830 resource_list_release(struct resource_list *rl, 1831 device_t bus, device_t child, 1832 int type, int rid, struct resource *res) 1833 { 1834 struct resource_list_entry *rle = 0; 1835 int passthrough = (device_get_parent(child) != bus); 1836 int error; 1837 1838 if (passthrough) { 1839 return BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1840 type, rid, res); 1841 } 1842 1843 rle = resource_list_find(rl, type, rid); 1844 1845 if (!rle) 1846 panic("resource_list_release: can't find resource"); 1847 if (!rle->res) 1848 panic("resource_list_release: resource entry is not busy"); 1849 1850 error = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, 1851 type, rid, res); 1852 if (error) 1853 return error; 1854 1855 rle->res = NULL; 1856 return 0; 1857 } 1858 1859 int 1860 resource_list_print_type(struct resource_list *rl, const char *name, int type, 1861 const char *format) 1862 { 1863 struct resource_list_entry *rle; 1864 int printed, retval; 1865 1866 printed = 0; 1867 retval = 0; 1868 /* Yes, this is kinda cheating */ 1869 SLIST_FOREACH(rle, rl, link) { 1870 if (rle->type == type) { 1871 if (printed == 0) 1872 retval += printf(" %s ", name); 1873 else 1874 retval += printf(","); 1875 printed++; 1876 retval += printf(format, rle->start); 1877 if (rle->count > 1) { 1878 retval += printf("-"); 1879 retval += printf(format, rle->start + 1880 rle->count - 1); 1881 } 1882 } 1883 } 1884 return (retval); 1885 } 1886 1887 /* 1888 * Call DEVICE_IDENTIFY for each driver. 1889 */ 1890 int 1891 bus_generic_probe(device_t dev) 1892 { 1893 devclass_t dc = dev->devclass; 1894 driverlink_t dl; 1895 1896 for (dl = TAILQ_FIRST(&dc->drivers); dl; dl = TAILQ_NEXT(dl, link)) 1897 DEVICE_IDENTIFY(dl->driver, dev); 1898 1899 return 0; 1900 } 1901 1902 int 1903 bus_generic_attach(device_t dev) 1904 { 1905 device_t child; 1906 1907 for (child = TAILQ_FIRST(&dev->children); 1908 child; child = TAILQ_NEXT(child, link)) 1909 device_probe_and_attach(child); 1910 1911 return 0; 1912 } 1913 1914 int 1915 bus_generic_detach(device_t dev) 1916 { 1917 device_t child; 1918 int error; 1919 1920 if (dev->state != DS_ATTACHED) 1921 return EBUSY; 1922 1923 for (child = TAILQ_FIRST(&dev->children); 1924 child; child = TAILQ_NEXT(child, link)) 1925 if ((error = device_detach(child)) != 0) 1926 return error; 1927 1928 return 0; 1929 } 1930 1931 int 1932 bus_generic_shutdown(device_t dev) 1933 { 1934 device_t child; 1935 1936 for (child = TAILQ_FIRST(&dev->children); 1937 child; child = TAILQ_NEXT(child, link)) 1938 device_shutdown(child); 1939 1940 return 0; 1941 } 1942 1943 int 1944 bus_generic_suspend(device_t dev) 1945 { 1946 int error; 1947 device_t child, child2; 1948 1949 for (child = TAILQ_FIRST(&dev->children); 1950 child; child = TAILQ_NEXT(child, link)) { 1951 error = DEVICE_SUSPEND(child); 1952 if (error) { 1953 for (child2 = TAILQ_FIRST(&dev->children); 1954 child2 && child2 != child; 1955 child2 = TAILQ_NEXT(child2, link)) 1956 DEVICE_RESUME(child2); 1957 return (error); 1958 } 1959 } 1960 return 0; 1961 } 1962 1963 int 1964 bus_generic_resume(device_t dev) 1965 { 1966 device_t child; 1967 1968 for (child = TAILQ_FIRST(&dev->children); 1969 child; child = TAILQ_NEXT(child, link)) { 1970 DEVICE_RESUME(child); 1971 /* if resume fails, there's nothing we can usefully do... */ 1972 } 1973 return 0; 1974 } 1975 1976 int 1977 bus_print_child_header (device_t dev, device_t child) 1978 { 1979 int retval = 0; 1980 1981 if (device_get_desc(child)) { 1982 retval += device_printf(child, "<%s>", 1983 device_get_desc(child)); 1984 } else { 1985 retval += printf("%s", device_get_nameunit(child)); 1986 } 1987 1988 return (retval); 1989 } 1990 1991 int 1992 bus_print_child_footer (device_t dev, device_t child) 1993 { 1994 return(printf(" on %s\n", device_get_nameunit(dev))); 1995 } 1996 1997 int 1998 bus_generic_print_child(device_t dev, device_t child) 1999 { 2000 int retval = 0; 2001 2002 retval += bus_print_child_header(dev, child); 2003 retval += bus_print_child_footer(dev, child); 2004 2005 return (retval); 2006 } 2007 2008 int 2009 bus_generic_read_ivar(device_t dev, device_t child, int index, 2010 uintptr_t * result) 2011 { 2012 return ENOENT; 2013 } 2014 2015 int 2016 bus_generic_write_ivar(device_t dev, device_t child, int index, 2017 uintptr_t value) 2018 { 2019 return ENOENT; 2020 } 2021 2022 void 2023 bus_generic_driver_added(device_t dev, driver_t *driver) 2024 { 2025 device_t child; 2026 2027 DEVICE_IDENTIFY(driver, dev); 2028 for (child = TAILQ_FIRST(&dev->children); 2029 child; child = TAILQ_NEXT(child, link)) 2030 if (child->state == DS_NOTPRESENT) 2031 device_probe_and_attach(child); 2032 } 2033 2034 int 2035 bus_generic_setup_intr(device_t dev, device_t child, struct resource *irq, 2036 int flags, driver_intr_t *intr, void *arg, 2037 void **cookiep) 2038 { 2039 /* Propagate up the bus hierarchy until someone handles it. */ 2040 if (dev->parent) 2041 return (BUS_SETUP_INTR(dev->parent, child, irq, flags, 2042 intr, arg, cookiep)); 2043 else 2044 return (EINVAL); 2045 } 2046 2047 int 2048 bus_generic_teardown_intr(device_t dev, device_t child, struct resource *irq, 2049 void *cookie) 2050 { 2051 /* Propagate up the bus hierarchy until someone handles it. */ 2052 if (dev->parent) 2053 return (BUS_TEARDOWN_INTR(dev->parent, child, irq, cookie)); 2054 else 2055 return (EINVAL); 2056 } 2057 2058 struct resource * 2059 bus_generic_alloc_resource(device_t dev, device_t child, int type, int *rid, 2060 u_long start, u_long end, u_long count, u_int flags) 2061 { 2062 /* Propagate up the bus hierarchy until someone handles it. */ 2063 if (dev->parent) 2064 return (BUS_ALLOC_RESOURCE(dev->parent, child, type, rid, 2065 start, end, count, flags)); 2066 else 2067 return (NULL); 2068 } 2069 2070 int 2071 bus_generic_release_resource(device_t dev, device_t child, int type, int rid, 2072 struct resource *r) 2073 { 2074 /* Propagate up the bus hierarchy until someone handles it. */ 2075 if (dev->parent) 2076 return (BUS_RELEASE_RESOURCE(dev->parent, child, type, rid, 2077 r)); 2078 else 2079 return (EINVAL); 2080 } 2081 2082 int 2083 bus_generic_activate_resource(device_t dev, device_t child, int type, int rid, 2084 struct resource *r) 2085 { 2086 /* Propagate up the bus hierarchy until someone handles it. */ 2087 if (dev->parent) 2088 return (BUS_ACTIVATE_RESOURCE(dev->parent, child, type, rid, 2089 r)); 2090 else 2091 return (EINVAL); 2092 } 2093 2094 int 2095 bus_generic_deactivate_resource(device_t dev, device_t child, int type, 2096 int rid, struct resource *r) 2097 { 2098 /* Propagate up the bus hierarchy until someone handles it. */ 2099 if (dev->parent) 2100 return (BUS_DEACTIVATE_RESOURCE(dev->parent, child, type, rid, 2101 r)); 2102 else 2103 return (EINVAL); 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, 2145 type, rid, r)); 2146 } 2147 2148 int 2149 bus_setup_intr(device_t dev, struct resource *r, int flags, 2150 driver_intr_t handler, void *arg, void **cookiep) 2151 { 2152 if (dev->parent == 0) 2153 return (EINVAL); 2154 return (BUS_SETUP_INTR(dev->parent, dev, r, flags, 2155 handler, arg, cookiep)); 2156 } 2157 2158 int 2159 bus_teardown_intr(device_t dev, struct resource *r, void *cookie) 2160 { 2161 if (dev->parent == 0) 2162 return (EINVAL); 2163 return (BUS_TEARDOWN_INTR(dev->parent, dev, r, cookie)); 2164 } 2165 2166 int 2167 bus_set_resource(device_t dev, int type, int rid, 2168 u_long start, u_long count) 2169 { 2170 return BUS_SET_RESOURCE(device_get_parent(dev), dev, type, rid, 2171 start, count); 2172 } 2173 2174 int 2175 bus_get_resource(device_t dev, int type, int rid, 2176 u_long *startp, u_long *countp) 2177 { 2178 return BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2179 startp, countp); 2180 } 2181 2182 u_long 2183 bus_get_resource_start(device_t dev, int type, int rid) 2184 { 2185 u_long start, count; 2186 int error; 2187 2188 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2189 &start, &count); 2190 if (error) 2191 return 0; 2192 return start; 2193 } 2194 2195 u_long 2196 bus_get_resource_count(device_t dev, int type, int rid) 2197 { 2198 u_long start, count; 2199 int error; 2200 2201 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid, 2202 &start, &count); 2203 if (error) 2204 return 0; 2205 return count; 2206 } 2207 2208 void 2209 bus_delete_resource(device_t dev, int type, int rid) 2210 { 2211 BUS_DELETE_RESOURCE(device_get_parent(dev), dev, type, rid); 2212 } 2213 2214 static int 2215 root_print_child(device_t dev, device_t child) 2216 { 2217 return (0); 2218 } 2219 2220 static int 2221 root_setup_intr(device_t dev, device_t child, driver_intr_t *intr, void *arg, 2222 void **cookiep) 2223 { 2224 /* 2225 * If an interrupt mapping gets to here something bad has happened. 2226 */ 2227 panic("root_setup_intr"); 2228 } 2229 2230 static device_method_t root_methods[] = { 2231 /* Device interface */ 2232 DEVMETHOD(device_shutdown, bus_generic_shutdown), 2233 DEVMETHOD(device_suspend, bus_generic_suspend), 2234 DEVMETHOD(device_resume, bus_generic_resume), 2235 2236 /* Bus interface */ 2237 DEVMETHOD(bus_print_child, root_print_child), 2238 DEVMETHOD(bus_read_ivar, bus_generic_read_ivar), 2239 DEVMETHOD(bus_write_ivar, bus_generic_write_ivar), 2240 DEVMETHOD(bus_setup_intr, root_setup_intr), 2241 2242 { 0, 0 } 2243 }; 2244 2245 static driver_t root_driver = { 2246 "root", 2247 root_methods, 2248 1, /* no softc */ 2249 }; 2250 2251 device_t root_bus; 2252 devclass_t root_devclass; 2253 2254 static int 2255 root_bus_module_handler(module_t mod, int what, void* arg) 2256 { 2257 switch (what) { 2258 case MOD_LOAD: 2259 compile_methods(&root_driver); 2260 root_bus = make_device(NULL, "root", 0); 2261 root_bus->desc = "System root bus"; 2262 root_bus->ops = root_driver.ops; 2263 root_bus->driver = &root_driver; 2264 root_bus->state = DS_ATTACHED; 2265 root_devclass = devclass_find_internal("root", FALSE); 2266 return 0; 2267 2268 case MOD_SHUTDOWN: 2269 device_shutdown(root_bus); 2270 return 0; 2271 } 2272 2273 return 0; 2274 } 2275 2276 static moduledata_t root_bus_mod = { 2277 "rootbus", 2278 root_bus_module_handler, 2279 0 2280 }; 2281 DECLARE_MODULE(rootbus, root_bus_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 2282 2283 void 2284 root_bus_configure(void) 2285 { 2286 device_t dev; 2287 2288 PDEBUG((".")); 2289 2290 for (dev = TAILQ_FIRST(&root_bus->children); dev; 2291 dev = TAILQ_NEXT(dev, link)) { 2292 device_probe_and_attach(dev); 2293 } 2294 } 2295 2296 int 2297 driver_module_handler(module_t mod, int what, void *arg) 2298 { 2299 int error, i; 2300 struct driver_module_data *dmd; 2301 devclass_t bus_devclass; 2302 2303 dmd = (struct driver_module_data *)arg; 2304 bus_devclass = devclass_find_internal(dmd->dmd_busname, TRUE); 2305 error = 0; 2306 2307 switch (what) { 2308 case MOD_LOAD: 2309 if (dmd->dmd_chainevh) 2310 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2311 2312 for (i = 0; !error && i < dmd->dmd_ndrivers; i++) { 2313 PDEBUG(("Loading module: driver %s on bus %s", 2314 DRIVERNAME(dmd->dmd_drivers[i]), 2315 dmd->dmd_busname)); 2316 error = devclass_add_driver(bus_devclass, 2317 dmd->dmd_drivers[i]); 2318 } 2319 if (error) 2320 break; 2321 2322 /* 2323 * The drivers loaded in this way are assumed to all 2324 * implement the same devclass. 2325 */ 2326 *dmd->dmd_devclass = 2327 devclass_find_internal(dmd->dmd_drivers[0]->name, 2328 TRUE); 2329 break; 2330 2331 case MOD_UNLOAD: 2332 for (i = 0; !error && i < dmd->dmd_ndrivers; i++) { 2333 PDEBUG(("Unloading module: driver %s from bus %s", 2334 DRIVERNAME(dmd->dmd_drivers[i]), 2335 dmd->dmd_busname)); 2336 error = devclass_delete_driver(bus_devclass, 2337 dmd->dmd_drivers[i]); 2338 } 2339 2340 if (!error && dmd->dmd_chainevh) 2341 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg); 2342 break; 2343 } 2344 2345 return (error); 2346 } 2347 2348 /* Emulate bus_dmamap_load_mbuf_sg() using bus_dmamap_load_mbuf(). */ 2349 struct mbuf_sg_args { 2350 bus_dma_segment_t *segs; 2351 int nsegs; 2352 }; 2353 2354 static void 2355 mbuf_sg_cb(void *arg, bus_dma_segment_t *segs, int nsegs, bus_size_t length, 2356 int error) 2357 { 2358 struct mbuf_sg_args *sg; 2359 2360 if (error) 2361 return; 2362 sg = arg; 2363 bcopy(segs, sg->segs, sizeof(bus_dma_segment_t) * nsegs); 2364 sg->nsegs = nsegs; 2365 } 2366 2367 2368 int 2369 bus_dmamap_load_mbuf_sg(bus_dma_tag_t dmat, bus_dmamap_t map, struct mbuf *mbuf, 2370 bus_dma_segment_t *segs, int *nsegs, int flags) 2371 { 2372 struct mbuf_sg_args sg; 2373 int error; 2374 2375 sg.segs = segs; 2376 sg.nsegs = *nsegs; 2377 error = bus_dmamap_load_mbuf(dmat, map, mbuf, mbuf_sg_cb, &sg, 2378 BUS_DMA_NOWAIT); 2379 if (error) 2380 return (error); 2381 *nsegs = sg.nsegs; 2382 return (0); 2383 } 2384 2385 #ifdef BUS_DEBUG 2386 2387 /* the _short versions avoid iteration by not calling anything that prints 2388 * more than oneliners. I love oneliners. 2389 */ 2390 2391 static void 2392 print_method_list(device_method_t *m, int indent) 2393 { 2394 int i; 2395 2396 if (!m) 2397 return; 2398 2399 for (i = 0; m->desc; i++, m++) 2400 indentprintf(("method %d: %s, offset=%d\n", 2401 i, m->desc->name, m->desc->offset)); 2402 } 2403 2404 static void 2405 print_device_ops(device_ops_t ops, int indent) 2406 { 2407 int i; 2408 int count = 0; 2409 2410 if (!ops) 2411 return; 2412 2413 /* we present a list of the methods that are pointing to the 2414 * error_method, but ignore the 0'th elements; it is always 2415 * error_method. 2416 */ 2417 for (i = 1; i < ops->maxoffset; i++) { 2418 if (ops->methods[i] == error_method) { 2419 if (count == 0) 2420 indentprintf(("error_method:")); 2421 printf(" %d", i); 2422 count++; 2423 } 2424 } 2425 if (count) 2426 printf("\n"); 2427 2428 indentprintf(("(%d method%s, %d valid, %d error_method%s)\n", 2429 ops->maxoffset-1, (ops->maxoffset-1 == 1? "":"s"), 2430 ops->maxoffset-1-count, 2431 count, (count == 1? "":"'s"))); 2432 } 2433 2434 static void 2435 print_device_short(device_t dev, int indent) 2436 { 2437 if (!dev) 2438 return; 2439 2440 indentprintf(("device %d: <%s> %sparent,%schildren,%s%s%s%s,%sivars,%ssoftc,busy=%d\n", 2441 dev->unit, dev->desc, 2442 (dev->parent? "":"no "), 2443 (TAILQ_EMPTY(&dev->children)? "no ":""), 2444 (dev->flags&DF_ENABLED? "enabled,":"disabled,"), 2445 (dev->flags&DF_FIXEDCLASS? "fixed,":""), 2446 (dev->flags&DF_WILDCARD? "wildcard,":""), 2447 (dev->flags&DF_DESCMALLOCED? "descmalloced,":""), 2448 (dev->ivars? "":"no "), 2449 (dev->softc? "":"no "), 2450 dev->busy)); 2451 } 2452 2453 static void 2454 print_device(device_t dev, int indent) 2455 { 2456 if (!dev) 2457 return; 2458 2459 print_device_short(dev, indent); 2460 2461 indentprintf(("Parent:\n")); 2462 print_device_short(dev->parent, indent+1); 2463 indentprintf(("Methods:\n")); 2464 print_device_ops(dev->ops, indent+1); 2465 indentprintf(("Driver:\n")); 2466 print_driver_short(dev->driver, indent+1); 2467 indentprintf(("Devclass:\n")); 2468 print_devclass_short(dev->devclass, indent+1); 2469 } 2470 2471 void 2472 print_device_tree_short(device_t dev, int indent) 2473 /* print the device and all its children (indented) */ 2474 { 2475 device_t child; 2476 2477 if (!dev) 2478 return; 2479 2480 print_device_short(dev, indent); 2481 2482 for (child = TAILQ_FIRST(&dev->children); child; 2483 child = TAILQ_NEXT(child, link)) 2484 print_device_tree_short(child, indent+1); 2485 } 2486 2487 void 2488 print_device_tree(device_t dev, int indent) 2489 /* print the device and all its children (indented) */ 2490 { 2491 device_t child; 2492 2493 if (!dev) 2494 return; 2495 2496 print_device(dev, indent); 2497 2498 for (child = TAILQ_FIRST(&dev->children); child; 2499 child = TAILQ_NEXT(child, link)) 2500 print_device_tree(child, indent+1); 2501 } 2502 2503 static void 2504 print_driver_short(driver_t *driver, int indent) 2505 { 2506 if (!driver) 2507 return; 2508 2509 indentprintf(("driver %s: softc size = %d\n", 2510 driver->name, driver->softc)); 2511 } 2512 2513 static void 2514 print_driver(driver_t *driver, int indent) 2515 { 2516 if (!driver) 2517 return; 2518 2519 print_driver_short(driver, indent); 2520 indentprintf(("Methods:\n")); 2521 print_method_list(driver->methods, indent+1); 2522 indentprintf(("Operations:\n")); 2523 print_device_ops(driver->ops, indent+1); 2524 } 2525 2526 2527 static void 2528 print_driver_list(driver_list_t drivers, int indent) 2529 { 2530 driverlink_t driver; 2531 2532 for (driver = TAILQ_FIRST(&drivers); driver; 2533 driver = TAILQ_NEXT(driver, link)) 2534 print_driver(driver->driver, indent); 2535 } 2536 2537 static void 2538 print_devclass_short(devclass_t dc, int indent) 2539 { 2540 if ( !dc ) 2541 return; 2542 2543 indentprintf(("devclass %s: max units = %d\n", 2544 dc->name, dc->maxunit)); 2545 } 2546 2547 static void 2548 print_devclass(devclass_t dc, int indent) 2549 { 2550 int i; 2551 2552 if ( !dc ) 2553 return; 2554 2555 print_devclass_short(dc, indent); 2556 indentprintf(("Drivers:\n")); 2557 print_driver_list(dc->drivers, indent+1); 2558 2559 indentprintf(("Devices:\n")); 2560 for (i = 0; i < dc->maxunit; i++) 2561 if (dc->devices[i]) 2562 print_device(dc->devices[i], indent+1); 2563 } 2564 2565 void 2566 print_devclass_list_short(void) 2567 { 2568 devclass_t dc; 2569 2570 printf("Short listing of devclasses, drivers & devices:\n"); 2571 for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) 2572 print_devclass_short(dc, 0); 2573 } 2574 2575 void 2576 print_devclass_list(void) 2577 { 2578 devclass_t dc; 2579 2580 printf("Full listing of devclasses, drivers & devices:\n"); 2581 for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) 2582 print_devclass(dc, 0); 2583 } 2584 2585 #endif
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