subr_bus.c revision 42497
1193326Sed/*- 2193326Sed * Copyright (c) 1997,1998 Doug Rabson 3193326Sed * All rights reserved. 4193326Sed * 5193326Sed * Redistribution and use in source and binary forms, with or without 6193326Sed * modification, are permitted provided that the following conditions 7193326Sed * are met: 8193326Sed * 1. Redistributions of source code must retain the above copyright 9193326Sed * notice, this list of conditions and the following disclaimer. 10193326Sed * 2. Redistributions in binary form must reproduce the above copyright 11193326Sed * notice, this list of conditions and the following disclaimer in the 12193326Sed * documentation and/or other materials provided with the distribution. 13193326Sed * 14212904Sdim * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15193326Sed * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16193326Sed * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17193326Sed * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18224145Sdim * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19207619Srdivacky * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20249423Sdim * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21249423Sdim * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22249423Sdim * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23249423Sdim * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24249423Sdim * SUCH DAMAGE. 25249423Sdim * 26249423Sdim * $Id: subr_bus.c,v 1.12 1998/12/12 11:30:04 n_hibma Exp $ 27249423Sdim */ 28193326Sed 29193326Sed#include <sys/param.h> 30193326Sed#include <sys/queue.h> 31218893Sdim#include <sys/malloc.h> 32226633Sdim#include <sys/kernel.h> 33193326Sed#include <sys/module.h> 34212904Sdim#include <sys/bus_private.h> 35212904Sdim#include <sys/systm.h> 36212904Sdim 37193326Sed#include "opt_bus.h" 38193326Sed 39193326Sed#ifdef BUS_DEBUG 40193326Sed#define PDEBUG(a) (printf(__FUNCTION__ ":%d: ", __LINE__), printf a, printf("\n")) 41193326Sed#define DEVICENAME(d) ((d)? device_get_name(d): "no device") 42193326Sed#define DRIVERNAME(d) ((d)? d->name : "no driver") 43193326Sed#define DEVCLANAME(d) ((d)? d->name : "no devclass") 44198092Srdivacky 45193326Sed/* Produce the indenting, indent*2 spaces plus a '.' ahead of that to 46193326Sed * prevent syslog from deleting initial spaces 47193326Sed */ 48234353Sdim#define indentprintf(p) do { int iJ; printf("."); for (iJ=0; iJ<indent; iJ++) printf(" "); printf p ; } while(0) 49226633Sdim 50198092Srdivackystatic void print_method_list(device_method_t *m, int indent); 51193326Sedstatic void print_device_ops(device_ops_t ops, int indent); 52193326Sedstatic void print_device_short(device_t dev, int indent); 53198092Srdivackystatic void print_device(device_t dev, int indent); 54226633Sdimvoid print_device_tree_short(device_t dev, int indent); 55226633Sdimvoid print_device_tree(device_t dev, int indent); 56193326Sedstatic void print_driver_short(driver_t *driver, int indent); 57193326Sedstatic void print_driver(driver_t *driver, int indent); 58193326Sedstatic void print_driver_list(driver_list_t drivers, int indent); 59193326Sedstatic void print_devclass_short(devclass_t dc, int indent); 60198092Srdivackystatic void print_devclass(devclass_t dc, int indent); 61212904Sdimvoid print_devclass_list_short(void); 62212904Sdimvoid print_devclass_list(void); 63198092Srdivacky 64193326Sed#else 65193326Sed/* Make the compiler ignore the function calls */ 66193326Sed#define PDEBUG(a) /* nop */ 67198092Srdivacky#define DEVICENAME(d) /* nop */ 68193326Sed#define DRIVERNAME(d) /* nop */ 69193326Sed#define DEVCLANAME(d) /* nop */ 70224145Sdim 71226633Sdim#define print_method_list(m,i) /* nop */ 72193326Sed#define print_device_ops(o,i) /* nop */ 73193326Sed#define print_device_short(d,i) /* nop */ 74193326Sed#define print_device(d,i) /* nop */ 75234353Sdim#define print_device_tree_short(d,i) /* nop */ 76234353Sdim#define print_device_tree(d,i) /* nop */ 77234353Sdim#define print_driver_short(d,i) /* nop */ 78198092Srdivacky#define print_driver(d,i) /* nop */ 79234353Sdim#define print_driver_list(d,i) /* nop */ 80193326Sed#define print_devclass_short(d,i) /* nop */ 81193326Sed#define print_devclass(d,i) /* nop */ 82193326Sed#define print_devclass_list_short() /* nop */ 83193326Sed#define print_devclass_list() /* nop */ 84193326Sed#endif 85193326Sed 86193326Sed 87193326Sed/* 88193326Sed * Method table handling 89193326Sed */ 90198092Srdivackystatic int next_method_offset = 1; 91234353Sdimstatic int methods_count = 0; 92218893Sdimstatic int methods_size = 0; 93234353Sdim 94218893Sdimstruct method { 95218893Sdim int offset; 96218893Sdim char* name; 97218893Sdim}; 98218893Sdim 99218893Sdimstatic struct method *methods = 0; 100234353Sdim 101207619Srdivackystatic void 102207619Srdivackyregister_method(struct device_op_desc *desc) 103207619Srdivacky{ 104207619Srdivacky int i; 105207619Srdivacky struct method* m; 106207619Srdivacky 107207619Srdivacky for (i = 0; i < methods_count; i++) 108207619Srdivacky if (!strcmp(methods[i].name, desc->name)) { 109207619Srdivacky desc->offset = methods[i].offset; 110207619Srdivacky PDEBUG(("methods[%d] has the same name, %s, with offset %d", 111207619Srdivacky i, desc->name, desc->offset)); 112207619Srdivacky return; 113193326Sed } 114239462Sdim 115234353Sdim if (methods_count == methods_size) { 116207619Srdivacky struct method* p; 117193326Sed 118193326Sed methods_size += 10; 119193326Sed p = (struct method*) malloc(methods_size * sizeof(struct method), 120198092Srdivacky M_DEVBUF, M_NOWAIT); 121193326Sed if (!p) 122234353Sdim panic("register_method: out of memory"); 123234353Sdim if (methods) { 124234353Sdim bcopy(methods, p, methods_count * sizeof(struct method)); 125234353Sdim free(methods, M_DEVBUF); 126234353Sdim } 127234353Sdim methods = p; 128234353Sdim } 129234353Sdim m = &methods[methods_count++]; 130234353Sdim m->name = malloc(strlen(desc->name) + 1, M_DEVBUF, M_NOWAIT); 131234353Sdim if (!m->name) 132234353Sdim panic("register_method: out of memory"); 133234353Sdim strcpy(m->name, desc->name); 134234353Sdim desc->offset = m->offset = next_method_offset++; 135234353Sdim} 136234353Sdim 137193326Sedstatic int error_method(void) 138193326Sed{ 139198092Srdivacky return ENXIO; 140234353Sdim} 141193326Sed 142193326Sedstatic struct device_ops null_ops = { 143239462Sdim 1, 144239462Sdim { error_method } 145239462Sdim}; 146239462Sdim 147239462Sdimstatic void 148239462Sdimcompile_methods(driver_t *driver) 149239462Sdim{ 150239462Sdim device_ops_t ops; 151239462Sdim struct device_method *m; 152239462Sdim int i; 153239462Sdim 154239462Sdim /* 155239462Sdim * First register any methods which need it. 156239462Sdim */ 157239462Sdim for (i = 0, m = driver->methods; m->desc; i++, m++) 158239462Sdim if (!m->desc->offset) 159239462Sdim register_method(m->desc); 160239462Sdim else 161239462Sdim PDEBUG(("offset not equal to zero, method desc %d left as is", i)); 162239462Sdim 163239462Sdim /* 164239462Sdim * Then allocate the compiled op table. 165239462Sdim */ 166239462Sdim ops = malloc(sizeof(struct device_ops) + (next_method_offset-1) * sizeof(devop_t), 167234353Sdim M_DEVBUF, M_NOWAIT); 168234353Sdim if (!ops) 169234353Sdim panic("compile_methods: out of memory"); 170239462Sdim 171239462Sdim ops->maxoffset = next_method_offset; 172239462Sdim for (i = 0; i < next_method_offset; i++) 173249423Sdim ops->methods[i] = error_method; 174249423Sdim for (i = 0, m = driver->methods; m->desc; i++, m++) 175249423Sdim ops->methods[m->desc->offset] = m->func; 176234353Sdim PDEBUG(("%s has %d method%s, wasting %d bytes", 177239462Sdim DRIVERNAME(driver), i, (i==1?"":"s"), 178239462Sdim (next_method_offset-i)*sizeof(devop_t))); 179239462Sdim 180239462Sdim driver->ops = ops; 181234353Sdim} 182234353Sdim 183239462Sdim/* 184234353Sdim * Devclass implementation 185234353Sdim */ 186234353Sdim 187234353Sdimstatic devclass_list_t devclasses = TAILQ_HEAD_INITIALIZER(devclasses); 188234353Sdim 189234353Sdimstatic devclass_t 190234353Sdimdevclass_find_internal(const char *classname, int create) 191239462Sdim{ 192239462Sdim devclass_t dc; 193239462Sdim 194239462Sdim PDEBUG(("looking for %s", classname)); 195239462Sdim if (!classname) 196239462Sdim return NULL; 197239462Sdim 198239462Sdim for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) 199239462Sdim if (!strcmp(dc->name, classname)) 200239462Sdim return dc; 201239462Sdim 202239462Sdim PDEBUG(("%s not found%s", classname, (create? ", creating": ""))); 203239462Sdim if (create) { 204239462Sdim dc = malloc(sizeof(struct devclass) + strlen(classname) + 1, 205239462Sdim M_DEVBUF, M_NOWAIT); 206239462Sdim if (!dc) 207239462Sdim return NULL; 208239462Sdim dc->name = (char*) (dc + 1); 209239462Sdim strcpy(dc->name, classname); 210239462Sdim dc->devices = NULL; 211239462Sdim dc->maxunit = 0; 212239462Sdim dc->nextunit = 0; 213239462Sdim TAILQ_INIT(&dc->drivers); 214239462Sdim TAILQ_INSERT_TAIL(&devclasses, dc, link); 215239462Sdim } 216239462Sdim 217239462Sdim return dc; 218239462Sdim} 219239462Sdim 220239462Sdimdevclass_t 221239462Sdimdevclass_find(const char *classname) 222239462Sdim{ 223234353Sdim return devclass_find_internal(classname, FALSE); 224239462Sdim} 225234353Sdim 226239462Sdimint 227234353Sdimdevclass_add_driver(devclass_t dc, driver_t *driver) 228239462Sdim{ 229239462Sdim PDEBUG(("%s", DRIVERNAME(driver))); 230239462Sdim /* 231239462Sdim * Compile the drivers methods. 232243830Sdim */ 233239462Sdim compile_methods(driver); 234239462Sdim 235239462Sdim /* 236239462Sdim * Make sure the devclass which the driver is implementing exists. 237234353Sdim */ 238234353Sdim devclass_find_internal(driver->name, TRUE); 239239462Sdim 240239462Sdim TAILQ_INSERT_TAIL(&dc->drivers, driver, link); 241249423Sdim 242251662Sdim return 0; 243234353Sdim} 244234353Sdim 245239462Sdimint 246234353Sdimdevclass_delete_driver(devclass_t busclass, driver_t *driver) 247234353Sdim{ 248234353Sdim devclass_t dc = devclass_find(driver->name); 249234353Sdim device_t dev; 250234353Sdim int i; 251234353Sdim int error; 252234353Sdim 253234353Sdim PDEBUG(("%s from devclass %s", driver->name, DEVCLANAME(busclass))); 254234353Sdim 255239462Sdim if (!dc) 256239462Sdim return 0; 257234353Sdim 258234353Sdim /* 259234353Sdim * Disassociate from any devices. We iterate through all the 260234353Sdim * devices in the devclass of the driver and detach any which are 261234353Sdim * using the driver. 262234353Sdim */ 263234353Sdim for (i = 0; i < dc->maxunit; i++) { 264234353Sdim if (dc->devices[i]) { 265234353Sdim dev = dc->devices[i]; 266234353Sdim if (dev->driver == driver) { 267234353Sdim if (error = device_detach(dev)) 268234353Sdim return error; 269263508Sdim device_set_driver(dev, NULL); 270234353Sdim } 271234353Sdim } 272234353Sdim } 273234353Sdim 274234353Sdim TAILQ_REMOVE(&busclass->drivers, driver, link); 275234353Sdim return 0; 276234353Sdim} 277234353Sdim 278234353Sdimdriver_t * 279234353Sdimdevclass_find_driver(devclass_t dc, const char *classname) 280234353Sdim{ 281234353Sdim driver_t *driver; 282234353Sdim 283234353Sdim PDEBUG(("%s in devclass %s", classname, DEVCLANAME(dc))); 284239462Sdim 285239462Sdim for (driver = TAILQ_FIRST(&dc->drivers); driver; 286239462Sdim driver = TAILQ_NEXT(driver, link)) { 287234353Sdim if (!strcmp(driver->name, classname)) 288234353Sdim return driver; 289234353Sdim } 290234353Sdim 291239462Sdim PDEBUG(("not found")); 292239462Sdim return NULL; 293239462Sdim} 294239462Sdim 295239462Sdimconst char * 296239462Sdimdevclass_get_name(devclass_t dc) 297234353Sdim{ 298234353Sdim return dc->name; 299234353Sdim} 300234353Sdim 301239462Sdimdevice_t 302234353Sdimdevclass_get_device(devclass_t dc, int unit) 303239462Sdim{ 304239462Sdim if (unit < 0 || unit >= dc->maxunit) 305234353Sdim return NULL; 306234353Sdim return dc->devices[unit]; 307234353Sdim} 308234353Sdim 309234353Sdimvoid * 310234353Sdimdevclass_get_softc(devclass_t dc, int unit) 311234353Sdim{ 312234353Sdim device_t dev; 313234353Sdim 314234353Sdim if (unit < 0 || unit >= dc->maxunit) 315234353Sdim return NULL; 316234353Sdim dev = dc->devices[unit]; 317234353Sdim if (!dev || dev->state < DS_ATTACHED) 318234353Sdim return NULL; 319234353Sdim return dev->softc; 320234353Sdim} 321234353Sdim 322234353Sdimint 323234353Sdimdevclass_get_devices(devclass_t dc, device_t **devlistp, int *devcountp) 324234353Sdim{ 325234353Sdim int i; 326234353Sdim int count; 327263508Sdim device_t *list; 328263508Sdim 329234353Sdim count = 0; 330234353Sdim for (i = 0; i < dc->maxunit; i++) 331234353Sdim if (dc->devices[i]) 332234353Sdim count++; 333234353Sdim 334234353Sdim list = malloc(count * sizeof(device_t), M_TEMP, M_NOWAIT); 335234353Sdim if (!list) 336234353Sdim return ENOMEM; 337234353Sdim 338234353Sdim count = 0; 339234353Sdim for (i = 0; i < dc->maxunit; i++) 340234353Sdim if (dc->devices[i]) { 341234353Sdim list[count] = dc->devices[i]; 342239462Sdim count++; 343239462Sdim } 344234353Sdim 345239462Sdim *devlistp = list; 346239462Sdim *devcountp = count; 347251662Sdim 348234353Sdim return 0; 349243830Sdim} 350234353Sdim 351234353Sdimint 352234353Sdimdevclass_get_maxunit(devclass_t dc) 353234353Sdim{ 354234353Sdim return dc->maxunit; 355234353Sdim} 356234353Sdim 357234353Sdimstatic int 358234353Sdimdevclass_alloc_unit(devclass_t dc, int *unitp) 359234353Sdim{ 360234353Sdim int unit = *unitp; 361234353Sdim 362234353Sdim PDEBUG(("unit %d in devclass %s", unit, DEVCLANAME(dc))); 363234353Sdim 364234353Sdim /* 365234353Sdim * If we have been given a wired unit number, check for existing 366234353Sdim * device. 367234353Sdim */ 368234353Sdim if (unit != -1) { 369234353Sdim device_t dev; 370234353Sdim dev = devclass_get_device(dc, unit); 371234353Sdim if (dev) { 372234353Sdim printf("devclass_alloc_unit: %s%d already exists, using next available unit number\n", dc->name, unit); 373234353Sdim unit = -1; 374234353Sdim } 375234353Sdim } 376234353Sdim 377234353Sdim if (unit == -1) { 378234353Sdim unit = dc->nextunit; 379234353Sdim dc->nextunit++; 380234353Sdim } else if (dc->nextunit <= unit) 381234353Sdim dc->nextunit = unit + 1; 382234353Sdim 383234353Sdim if (unit >= dc->maxunit) { 384234353Sdim device_t *newlist; 385234353Sdim int newsize; 386234353Sdim 387234353Sdim newsize = (dc->maxunit ? 2 * dc->maxunit 388234353Sdim : MINALLOCSIZE / sizeof(device_t)); 389234353Sdim newlist = malloc(sizeof(device_t) * newsize, M_DEVBUF, M_NOWAIT); 390234353Sdim if (!newlist) 391234353Sdim return ENOMEM; 392234353Sdim bcopy(dc->devices, newlist, sizeof(device_t) * dc->maxunit); 393234353Sdim bzero(newlist + dc->maxunit, 394234353Sdim sizeof(device_t) * (newsize - dc->maxunit)); 395234353Sdim if (dc->devices) 396234353Sdim free(dc->devices, M_DEVBUF); 397234353Sdim dc->devices = newlist; 398234353Sdim dc->maxunit = newsize; 399234353Sdim } 400234353Sdim PDEBUG(("now: unit %d in devclass %s", unit, DEVCLANAME(dc))); 401234353Sdim 402234353Sdim *unitp = unit; 403234353Sdim return 0; 404234353Sdim} 405263508Sdim 406234353Sdimstatic int 407234353Sdimdevclass_add_device(devclass_t dc, device_t dev) 408234353Sdim{ 409234353Sdim int error; 410234353Sdim 411234353Sdim PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); 412263508Sdim 413263508Sdim if (error = devclass_alloc_unit(dc, &dev->unit)) 414263508Sdim return error; 415263508Sdim dc->devices[dev->unit] = dev; 416263508Sdim dev->devclass = dc; 417263508Sdim return 0; 418263508Sdim} 419263508Sdim 420263508Sdimstatic int 421263508Sdimdevclass_delete_device(devclass_t dc, device_t dev) 422263508Sdim{ 423263508Sdim if (!dc || !dev) 424263508Sdim return 0; 425263508Sdim 426263508Sdim PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc))); 427263508Sdim 428263508Sdim if (dev->devclass != dc 429263508Sdim || dc->devices[dev->unit] != dev) 430263508Sdim panic("devclass_delete_device: inconsistent device class"); 431263508Sdim dc->devices[dev->unit] = NULL; 432263508Sdim if (dev->flags & DF_WILDCARD) 433234353Sdim dev->unit = -1; 434234353Sdim dev->devclass = NULL; 435234353Sdim while (dc->nextunit > 0 && dc->devices[dc->nextunit - 1] == NULL) 436234353Sdim dc->nextunit--; 437234353Sdim return 0; 438234353Sdim} 439234353Sdim 440234353Sdimstatic device_t 441239462Sdimmake_device(device_t parent, const char *name, 442239462Sdim int unit, void *ivars) 443239462Sdim{ 444239462Sdim device_t dev; 445239462Sdim devclass_t dc; 446239462Sdim int error; 447239462Sdim 448239462Sdim PDEBUG(("%s at %s as unit %d with%s ivars", 449239462Sdim name, DEVICENAME(parent), unit, (ivars? "":"out"))); 450239462Sdim 451239462Sdim if (name) { 452239462Sdim dc = devclass_find_internal(name, TRUE); 453239462Sdim if (!dc) { 454239462Sdim printf("make_device: can't find device class %s\n", name); 455239462Sdim return NULL; 456239462Sdim } 457239462Sdim 458239462Sdim if (error = devclass_alloc_unit(dc, &unit)) 459239462Sdim return NULL; 460239462Sdim } else 461239462Sdim dc = NULL; 462239462Sdim 463239462Sdim dev = malloc(sizeof(struct device), M_DEVBUF, M_NOWAIT); 464239462Sdim if (!dev) 465239462Sdim return 0; 466239462Sdim 467239462Sdim dev->parent = parent; 468239462Sdim TAILQ_INIT(&dev->children); 469239462Sdim dev->ops = &null_ops; 470239462Sdim dev->driver = NULL; 471239462Sdim dev->devclass = dc; 472239462Sdim dev->unit = unit; 473239462Sdim dev->desc = NULL; 474239462Sdim dev->busy = 0; 475239462Sdim dev->flags = DF_ENABLED; 476239462Sdim if (unit == -1) 477239462Sdim dev->flags |= DF_WILDCARD; 478239462Sdim if (name) 479239462Sdim dev->flags |= DF_FIXEDCLASS; 480239462Sdim dev->ivars = ivars; 481239462Sdim dev->softc = NULL; 482239462Sdim 483239462Sdim if (dc) 484239462Sdim dc->devices[unit] = dev; 485239462Sdim 486239462Sdim dev->state = DS_NOTPRESENT; 487239462Sdim 488239462Sdim return dev; 489239462Sdim} 490239462Sdim 491239462Sdimstatic void 492239462Sdimdevice_print_child(device_t dev, device_t child) 493239462Sdim{ 494239462Sdim printf("%s%d", device_get_name(child), device_get_unit(child)); 495239462Sdim if (device_is_alive(child)) { 496239462Sdim if (device_get_desc(child)) 497239462Sdim printf(": <%s>", device_get_desc(child)); 498239462Sdim BUS_PRINT_CHILD(dev, child); 499239462Sdim } else 500239462Sdim printf(" not found"); 501243830Sdim printf("\n"); 502239462Sdim} 503239462Sdim 504239462Sdimdevice_t 505239462Sdimdevice_add_child(device_t dev, const char *name, int unit, void *ivars) 506239462Sdim{ 507239462Sdim device_t child; 508239462Sdim 509239462Sdim PDEBUG(("%s at %s as unit %d with%s ivars", 510239462Sdim name, DEVICENAME(dev), unit, (ivars? "":"out"))); 511239462Sdim 512239462Sdim child = make_device(dev, name, unit, ivars); 513249423Sdim 514251662Sdim if (child) 515239462Sdim TAILQ_INSERT_TAIL(&dev->children, child, link); 516239462Sdim else 517239462Sdim PDEBUG(("%s failed", name)); 518239462Sdim 519239462Sdim return child; 520239462Sdim} 521239462Sdim 522239462Sdimdevice_t 523239462Sdimdevice_add_child_after(device_t dev, device_t place, const char *name, 524239462Sdim int unit, void *ivars) 525239462Sdim{ 526239462Sdim device_t child; 527239462Sdim 528239462Sdim PDEBUG(("%s at %s after %s as unit %d with%s ivars", 529239462Sdim name, DEVICENAME(dev), DEVICENAME(place), unit, (ivars? "":"out"))); 530239462Sdim 531239462Sdim child = make_device(dev, name, unit, ivars); 532239462Sdim 533239462Sdim if (place) { 534239462Sdim TAILQ_INSERT_AFTER(&dev->children, place, dev, link); 535239462Sdim } else { 536239462Sdim TAILQ_INSERT_HEAD(&dev->children, dev, link); 537239462Sdim } 538239462Sdim 539239462Sdim return child; 540239462Sdim} 541239462Sdim 542239462Sdimint 543239462Sdimdevice_delete_child(device_t dev, device_t child) 544239462Sdim{ 545263508Sdim int error; 546239462Sdim device_t grandchild; 547239462Sdim 548239462Sdim PDEBUG(("%s from %s", DEVICENAME(child), DEVICENAME(dev))); 549239462Sdim 550239462Sdim /* remove children first */ 551239462Sdim while ( (grandchild = TAILQ_FIRST(&child->children)) ) { 552239462Sdim error = device_delete_child(child, grandchild); 553239462Sdim if (error) 554239462Sdim return error; 555239462Sdim } 556239462Sdim 557239462Sdim if (error = device_detach(child)) 558239462Sdim return error; 559239462Sdim if (child->devclass) 560239462Sdim devclass_delete_device(child->devclass, child); 561239462Sdim TAILQ_REMOVE(&dev->children, child, link); 562239462Sdim free(child, M_DEVBUF); 563239462Sdim 564239462Sdim return 0; 565239462Sdim} 566239462Sdim 567239462Sdim/* 568239462Sdim * Find only devices attached to this bus. 569239462Sdim */ 570239462Sdimdevice_t 571239462Sdimdevice_find_child(device_t dev, const char *classname, int unit) 572239462Sdim{ 573239462Sdim devclass_t dc; 574239462Sdim device_t child; 575239462Sdim 576239462Sdim dc = devclass_find(classname); 577239462Sdim if (!dc) 578239462Sdim return NULL; 579239462Sdim 580239462Sdim child = devclass_get_device(dc, unit); 581239462Sdim if (child && child->parent == dev) 582239462Sdim return child; 583239462Sdim return NULL; 584239462Sdim} 585239462Sdim 586239462Sdimstatic driver_t * 587239462Sdimfirst_matching_driver(devclass_t dc, device_t dev) 588239462Sdim{ 589239462Sdim if (dev->devclass) 590239462Sdim return devclass_find_driver(dc, dev->devclass->name); 591239462Sdim else 592239462Sdim return TAILQ_FIRST(&dc->drivers); 593239462Sdim} 594239462Sdim 595239462Sdimstatic driver_t * 596239462Sdimnext_matching_driver(devclass_t dc, device_t dev, driver_t *last) 597239462Sdim{ 598239462Sdim if (dev->devclass) { 599239462Sdim driver_t *driver; 600239462Sdim for (driver = TAILQ_NEXT(last, link); driver; 601234353Sdim driver = TAILQ_NEXT(driver, link)) 602234353Sdim if (!strcmp(dev->devclass->name, driver->name)) 603234353Sdim return driver; 604234353Sdim return NULL; 605263508Sdim } else 606239462Sdim return TAILQ_NEXT(last, link); 607239462Sdim} 608239462Sdim 609239462Sdimstatic int 610239462Sdimdevice_probe_child(device_t dev, device_t child) 611239462Sdim{ 612239462Sdim devclass_t dc; 613239462Sdim driver_t *driver; 614234353Sdim 615234353Sdim dc = dev->devclass; 616234353Sdim if (dc == NULL) 617234353Sdim panic("device_probe_child: parent device has no devclass"); 618234353Sdim 619239462Sdim if (child->state == DS_ALIVE) 620234353Sdim return 0; 621234353Sdim 622234353Sdim for (driver = first_matching_driver(dc, child); 623234353Sdim driver; 624239462Sdim driver = next_matching_driver(dc, child, driver)) { 625239462Sdim PDEBUG(("Trying %s", DRIVERNAME(driver))); 626234353Sdim device_set_driver(child, driver); 627234353Sdim if (DEVICE_PROBE(child) == 0) { 628234353Sdim if (!child->devclass) 629234353Sdim device_set_devclass(child, driver->name); 630234353Sdim child->state = DS_ALIVE; 631234353Sdim return 0; 632234353Sdim } 633234353Sdim } 634234353Sdim 635234353Sdim return ENXIO; 636234353Sdim} 637234353Sdim 638234353Sdimdevice_t 639234353Sdimdevice_get_parent(device_t dev) 640234353Sdim{ 641234353Sdim return dev->parent; 642234353Sdim} 643234353Sdim 644234353Sdimdriver_t * 645234353Sdimdevice_get_driver(device_t dev) 646234353Sdim{ 647234353Sdim return dev->driver; 648234353Sdim} 649234353Sdim 650234353Sdimdevclass_t 651234353Sdimdevice_get_devclass(device_t dev) 652234353Sdim{ 653234353Sdim return dev->devclass; 654234353Sdim} 655234353Sdim 656234353Sdimconst char * 657234353Sdimdevice_get_name(device_t dev) 658234353Sdim{ 659234353Sdim if (dev->devclass) 660234353Sdim return devclass_get_name(dev->devclass); 661239462Sdim return NULL; 662239462Sdim} 663234353Sdim 664239462Sdimint 665234353Sdimdevice_get_unit(device_t dev) 666234353Sdim{ 667234353Sdim return dev->unit; 668234353Sdim} 669234353Sdim 670243830Sdimconst char * 671234353Sdimdevice_get_desc(device_t dev) 672234353Sdim{ 673234353Sdim return dev->desc; 674234353Sdim} 675239462Sdim 676239462Sdimvoid 677239462Sdimdevice_print_prettyname(device_t dev) 678239462Sdim{ 679239462Sdim const char *name = device_get_name(dev); 680249423Sdim 681234353Sdim if (name == 0) 682239462Sdim name = "(no driver assigned)"; 683239462Sdim printf("%s%d: ", name, device_get_unit(dev)); 684239462Sdim} 685239462Sdim 686239462Sdimvoid 687249423Sdimdevice_set_desc(device_t dev, const char* desc) 688234353Sdim{ 689251662Sdim dev->desc = desc; 690239462Sdim} 691234353Sdim 692239462Sdimvoid * 693239462Sdimdevice_get_softc(device_t dev) 694234353Sdim{ 695239462Sdim return dev->softc; 696239462Sdim} 697239462Sdim 698239462Sdimvoid * 699239462Sdimdevice_get_ivars(device_t dev) 700239462Sdim{ 701239462Sdim return dev->ivars; 702239462Sdim} 703239462Sdim 704239462Sdimdevice_state_t 705239462Sdimdevice_get_state(device_t dev) 706239462Sdim{ 707234353Sdim return dev->state; 708239462Sdim} 709239462Sdim 710239462Sdimvoid 711239462Sdimdevice_enable(device_t dev) 712239462Sdim{ 713239462Sdim dev->flags |= DF_ENABLED; 714239462Sdim} 715239462Sdim 716239462Sdimvoid 717239462Sdimdevice_disable(device_t dev) 718234353Sdim{ 719234353Sdim dev->flags &= ~DF_ENABLED; 720234353Sdim} 721239462Sdim 722239462Sdimvoid 723234353Sdimdevice_busy(device_t dev) 724234353Sdim{ 725239462Sdim if (dev->state < DS_ATTACHED) 726239462Sdim panic("device_busy: called for unattached device"); 727239462Sdim if (dev->busy == 0 && dev->parent) 728234353Sdim device_busy(dev->parent); 729234353Sdim dev->busy++; 730243830Sdim dev->state = DS_BUSY; 731234353Sdim} 732234353Sdim 733234353Sdimvoid 734263508Sdimdevice_unbusy(device_t dev) 735234353Sdim{ 736234353Sdim if (dev->state != DS_BUSY) 737234353Sdim panic("device_unbusy: called for non-busy device"); 738234353Sdim dev->busy--; 739234353Sdim if (dev->busy == 0) { 740234353Sdim if (dev->parent) 741234353Sdim device_unbusy(dev->parent); 742234353Sdim dev->state = DS_ATTACHED; 743234353Sdim } 744234353Sdim} 745234353Sdim 746243830Sdimint 747243830Sdimdevice_is_enabled(device_t dev) 748234353Sdim{ 749234353Sdim return (dev->flags & DF_ENABLED) != 0; 750234353Sdim} 751234353Sdim 752234353Sdimint 753234353Sdimdevice_is_alive(device_t dev) 754234353Sdim{ 755234353Sdim return dev->state >= DS_ALIVE; 756234353Sdim} 757234353Sdim 758234353Sdimint 759234353Sdimdevice_set_devclass(device_t dev, const char *classname) 760234353Sdim{ 761234353Sdim devclass_t dc; 762234353Sdim 763234353Sdim if (dev->devclass) { 764234353Sdim printf("device_set_devclass: device class already set\n"); 765234353Sdim return EINVAL; 766234353Sdim } 767234353Sdim 768234353Sdim dc = devclass_find_internal(classname, TRUE); 769234353Sdim if (!dc) 770234353Sdim return ENOMEM; 771234353Sdim 772234353Sdim return devclass_add_device(dc, dev); 773234353Sdim} 774234353Sdim 775234353Sdimint 776234353Sdimdevice_set_driver(device_t dev, driver_t *driver) 777239462Sdim{ 778239462Sdim if (dev->state >= DS_ATTACHED) 779239462Sdim return EBUSY; 780239462Sdim 781234353Sdim if (dev->driver == driver) 782234353Sdim return 0; 783234353Sdim 784234353Sdim if (dev->softc) { 785234353Sdim free(dev->softc, M_DEVBUF); 786243830Sdim dev->softc = NULL; 787234353Sdim } 788234353Sdim dev->ops = &null_ops; 789234353Sdim dev->driver = driver; 790234353Sdim if (driver) { 791239462Sdim dev->ops = driver->ops; 792239462Sdim dev->softc = malloc(driver->softc, M_DEVBUF, M_NOWAIT); 793239462Sdim if (!dev->softc) { 794239462Sdim dev->ops = &null_ops; 795239462Sdim dev->driver = NULL; 796249423Sdim return ENOMEM; 797234353Sdim } 798239462Sdim bzero(dev->softc, driver->softc); 799239462Sdim } 800239462Sdim return 0; 801239462Sdim} 802239462Sdim 803249423Sdimint 804234353Sdimdevice_probe_and_attach(device_t dev) 805239462Sdim{ 806239462Sdim device_t bus = dev->parent; 807239462Sdim int error = 0; 808239462Sdim 809239462Sdim if (dev->state >= DS_ALIVE) 810249423Sdim return 0; 811234353Sdim 812251662Sdim if (dev->flags & DF_ENABLED) { 813234353Sdim error = device_probe_child(bus, dev); 814234353Sdim if (!error) { 815239462Sdim device_print_child(bus, dev); 816239462Sdim error = DEVICE_ATTACH(dev); 817239462Sdim if (!error) 818239462Sdim dev->state = DS_ATTACHED; 819239462Sdim else { 820239462Sdim printf("device_probe_and_attach: %s%d attach returned %d\n", 821239462Sdim dev->driver->name, dev->unit, error); 822239462Sdim device_set_driver(dev, NULL); 823239462Sdim dev->state = DS_NOTPRESENT; 824239462Sdim } 825239462Sdim } 826239462Sdim } else { 827239462Sdim device_print_prettyname(dev); 828239462Sdim printf("not probed (disabled)\n"); 829239462Sdim } 830239462Sdim 831234353Sdim return error; 832234353Sdim} 833239462Sdim 834239462Sdimint 835239462Sdimdevice_detach(device_t dev) 836239462Sdim{ 837239462Sdim int error; 838239462Sdim 839239462Sdim PDEBUG(("%s", DEVICENAME(dev))); 840239462Sdim if (dev->state == DS_BUSY) 841239462Sdim return EBUSY; 842239462Sdim if (dev->state != DS_ATTACHED) 843239462Sdim return 0; 844239462Sdim 845239462Sdim if (error = DEVICE_DETACH(dev)) 846239462Sdim return error; 847239462Sdim 848239462Sdim if (!(dev->flags & DF_FIXEDCLASS)) 849239462Sdim devclass_delete_device(dev->devclass, dev); 850239462Sdim 851234353Sdim dev->state = DS_NOTPRESENT; 852239462Sdim device_set_driver(dev, NULL); 853239462Sdim 854239462Sdim return 0; 855234353Sdim} 856239462Sdim 857239462Sdimint 858239462Sdimdevice_shutdown(device_t dev) 859239462Sdim{ 860239462Sdim if (dev->state < DS_ATTACHED) 861239462Sdim return 0; 862239462Sdim return DEVICE_SHUTDOWN(dev); 863239462Sdim} 864239462Sdim 865239462Sdim/* 866234353Sdim * Access functions for device resources. 867239462Sdim */ 868239462Sdimextern struct config_device devtab[]; 869239462Sdimextern int devtab_count; 870239462Sdim 871234353Sdimstatic int 872239462Sdimresource_match_string(int i, char *resname, char *value) 873239462Sdim{ 874234353Sdim int j; 875239462Sdim struct config_resource *res; 876239462Sdim 877234353Sdim for (j = 0, res = devtab[i].resources; 878234353Sdim j < devtab[i].resource_count; j++, res++) 879234353Sdim if (!strcmp(res->name, resname) 880239462Sdim && res->type == RES_STRING 881239462Sdim && !strcmp(res->u.stringval, value)) 882234353Sdim return TRUE; 883234353Sdim return FALSE; 884239462Sdim} 885239462Sdim 886239462Sdimstatic int 887239462Sdimresource_find(const char *name, int unit, char *resname, 888239462Sdim struct config_resource **result) 889234353Sdim{ 890234353Sdim int i, j; 891234353Sdim struct config_resource *res; 892234353Sdim 893234353Sdim /* 894234353Sdim * First check specific instances, then generic. 895234353Sdim */ 896234353Sdim for (i = 0; i < devtab_count; i++) { 897234353Sdim if (devtab[i].unit < 0) 898234353Sdim continue; 899234353Sdim if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 900234353Sdim res = devtab[i].resources; 901234353Sdim for (j = 0; j < devtab[i].resource_count; j++, res++) 902234353Sdim if (!strcmp(res->name, resname)) { 903234353Sdim *result = res; 904234353Sdim return 0; 905234353Sdim } 906234353Sdim } 907234353Sdim } 908234353Sdim for (i = 0; i < devtab_count; i++) { 909234353Sdim if (devtab[i].unit >= 0) 910234353Sdim continue; 911234353Sdim if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) { 912234353Sdim res = devtab[i].resources; 913234353Sdim for (j = 0; j < devtab[i].resource_count; j++, res++) 914234353Sdim if (!strcmp(res->name, resname)) { 915234353Sdim *result = res; 916234353Sdim return 0; 917234353Sdim } 918234353Sdim } 919234353Sdim } 920234353Sdim return ENOENT; 921234353Sdim} 922234353Sdim 923234353Sdimint 924234353Sdimresource_int_value(const char *name, int unit, char *resname, int *result) 925234353Sdim{ 926263508Sdim int error; 927263508Sdim struct config_resource *res; 928263508Sdim if ((error = resource_find(name, unit, resname, &res)) != 0) 929263508Sdim return error; 930234353Sdim if (res->type != RES_INT) 931234353Sdim return EFTYPE; 932223017Sdim *result = res->u.intval; 933207619Srdivacky return 0; 934193725Sed} 935207619Srdivacky 936193725Sedint 937198092Srdivackyresource_long_value(const char *name, int unit, char *resname, long *result) 938193725Sed{ 939193725Sed int error; 940224145Sdim struct config_resource *res; 941224145Sdim if ((error = resource_find(name, unit, resname, &res)) != 0) 942223017Sdim return error; 943239462Sdim if (res->type != RES_LONG) 944239462Sdim return EFTYPE; 945223017Sdim *result = res->u.longval; 946223017Sdim return 0; 947193725Sed} 948193725Sed 949193725Sedint 950193725Sedresource_string_value(const char *name, int unit, char *resname, char **result) 951193725Sed{ 952193725Sed int error; 953193725Sed struct config_resource *res; 954234353Sdim if ((error = resource_find(name, unit, resname, &res)) != 0) 955193725Sed return error; 956193725Sed if (res->type != RES_STRING) 957193725Sed return EFTYPE; 958193725Sed *result = res->u.stringval; 959198092Srdivacky return 0; 960207619Srdivacky} 961193725Sed 962193725Sedint 963212904Sdimresource_query_string(int i, char *resname, char *value) 964212904Sdim{ 965212904Sdim if (i < 0) 966212904Sdim i = 0; 967212904Sdim else 968198092Srdivacky i = i + 1; 969207619Srdivacky for (; i < devtab_count; i++) 970207619Srdivacky if (resource_match_string(i, resname, value)) 971207619Srdivacky return i; 972207619Srdivacky return -1; 973207619Srdivacky} 974193326Sed 975207619Srdivackychar * 976193326Sedresource_query_name(int i) 977193326Sed{ 978212904Sdim return devtab[i].name; 979212904Sdim} 980212904Sdim 981212904Sdimint 982212904Sdimresource_query_unit(int i) 983198092Srdivacky{ 984212904Sdim return devtab[i].unit; 985194613Sed} 986194613Sed 987194613Sed 988263508Sdim/* 989263508Sdim * Some useful method implementations to make life easier for bus drivers. 990263508Sdim */ 991263508Sdimint 992263508Sdimbus_generic_attach(device_t dev) 993263508Sdim{ 994263508Sdim device_t child; 995263508Sdim 996263508Sdim for (child = TAILQ_FIRST(&dev->children); 997263508Sdim child; child = TAILQ_NEXT(child, link)) 998263508Sdim device_probe_and_attach(child); 999263508Sdim 1000224145Sdim return 0; 1001224145Sdim} 1002224145Sdim 1003224145Sdimint 1004224145Sdimbus_generic_detach(device_t dev) 1005224145Sdim{ 1006249423Sdim device_t child; 1007224145Sdim int error; 1008194613Sed 1009224145Sdim if (dev->state != DS_ATTACHED) 1010224145Sdim return EBUSY; 1011234353Sdim 1012224145Sdim for (child = TAILQ_FIRST(&dev->children); 1013224145Sdim child; child = TAILQ_NEXT(child, link)) 1014224145Sdim if (error = device_detach(child)) 1015224145Sdim return error; 1016224145Sdim 1017224145Sdim return 0; 1018224145Sdim} 1019224145Sdim 1020224145Sdimint 1021212904Sdimbus_generic_shutdown(device_t dev) 1022224145Sdim{ 1023224145Sdim device_t child; 1024224145Sdim 1025226633Sdim for (child = TAILQ_FIRST(&dev->children); 1026224145Sdim child; child = TAILQ_NEXT(child, link)) 1027224145Sdim DEVICE_SHUTDOWN(child); 1028224145Sdim 1029224145Sdim return 0; 1030224145Sdim} 1031224145Sdim 1032224145Sdimint 1033224145Sdimbus_generic_suspend(device_t dev) 1034193326Sed{ 1035193326Sed int error; 1036193326Sed device_t child, child2; 1037193326Sed 1038212904Sdim for (child = TAILQ_FIRST(&dev->children); 1039212904Sdim child; child = TAILQ_NEXT(child, link)) { 1040212904Sdim error = DEVICE_SUSPEND(child); 1041212904Sdim if (error) { 1042239462Sdim for (child2 = TAILQ_FIRST(&dev->children); 1043212904Sdim child2 && child2 != child; 1044239462Sdim child2 = TAILQ_NEXT(child2, link)) 1045193326Sed DEVICE_RESUME(child2); 1046193326Sed return (error); 1047193326Sed } 1048193326Sed } 1049198092Srdivacky return 0; 1050193326Sed} 1051193326Sed 1052193326Sedint 1053198092Srdivackybus_generic_resume(device_t dev) 1054239462Sdim{ 1055193326Sed device_t child; 1056193326Sed 1057218893Sdim for (child = TAILQ_FIRST(&dev->children); 1058234353Sdim child; child = TAILQ_NEXT(child, link)) { 1059234353Sdim DEVICE_RESUME(child); 1060218893Sdim /* if resume fails, there's nothing we can usefully do... */ 1061218893Sdim } 1062218893Sdim return 0; 1063218893Sdim} 1064218893Sdim 1065218893Sdimvoid 1066218893Sdimbus_generic_print_child(device_t dev, device_t child) 1067218893Sdim{ 1068234353Sdim} 1069218893Sdim 1070218893Sdimint 1071218893Sdimbus_generic_read_ivar(device_t dev, device_t child, int index, 1072218893Sdim uintptr_t * result) 1073226633Sdim{ 1074226633Sdim return ENOENT; 1075226633Sdim} 1076226633Sdim 1077226633Sdimint 1078226633Sdimbus_generic_write_ivar(device_t dev, device_t child, int index, 1079226633Sdim uintptr_t value) 1080223017Sdim{ 1081223017Sdim return ENOENT; 1082223017Sdim} 1083223017Sdim 1084223017Sdimint 1085223017Sdimbus_generic_setup_intr(device_t dev, device_t child, struct resource *irq, 1086223017Sdim driver_intr_t *intr, void *arg, void **cookiep) 1087223017Sdim{ 1088223017Sdim /* Propagate up the bus hierarchy until someone handles it. */ 1089223017Sdim if (dev->parent) 1090223017Sdim return (BUS_SETUP_INTR(dev->parent, dev, irq, intr, arg, 1091223017Sdim cookiep)); 1092226633Sdim else 1093223017Sdim return (EINVAL); 1094223017Sdim} 1095223017Sdim 1096223017Sdimint 1097223017Sdimbus_generic_teardown_intr(device_t dev, device_t child, struct resource *irq, 1098223017Sdim void *cookie) 1099223017Sdim{ 1100223017Sdim /* Propagate up the bus hierarchy until someone handles it. */ 1101223017Sdim if (dev->parent) 1102223017Sdim return (BUS_TEARDOWN_INTR(dev->parent, dev, irq, cookie)); 1103223017Sdim else 1104223017Sdim return (EINVAL); 1105223017Sdim} 1106223017Sdim 1107223017Sdimint 1108223017Sdimbus_generic_activate_resource(device_t dev, device_t child, int type, int rid, 1109223017Sdim struct resource *r) 1110223017Sdim{ 1111226633Sdim /* Propagate up the bus hierarchy until someone handles it. */ 1112223017Sdim if (dev->parent) 1113223017Sdim return (BUS_ACTIVATE_RESOURCE(dev->parent, child, type, rid, 1114223017Sdim r)); 1115223017Sdim else 1116223017Sdim return (EINVAL); 1117223017Sdim} 1118218893Sdim 1119249423Sdimint 1120249423Sdimbus_generic_deactivate_resource(device_t dev, device_t child, int type, 1121249423Sdim int rid, struct resource *r) 1122249423Sdim{ 1123249423Sdim /* Propagate up the bus hierarchy until someone handles it. */ 1124249423Sdim if (dev->parent) 1125249423Sdim return (BUS_DEACTIVATE_RESOURCE(dev->parent, child, type, rid, 1126249423Sdim r)); 1127249423Sdim else 1128249423Sdim return (EINVAL); 1129249423Sdim} 1130249423Sdim 1131249423Sdim/* 1132249423Sdim * Some convenience functions to make it easier for drivers to use the 1133249423Sdim * resource-management functions. All these really do is hide the 1134249423Sdim * indirection through the parent's method table, making for slightly 1135249423Sdim * less-wordy code. In the future, it might make sense for this code 1136249423Sdim * to maintain some sort of a list of resources allocated by each device. 1137249423Sdim */ 1138249423Sdimstruct resource * 1139249423Sdimbus_alloc_resource(device_t dev, int type, int *rid, u_long start, u_long end, 1140249423Sdim u_long count, u_int flags) 1141249423Sdim{ 1142249423Sdim if (dev->parent == 0) 1143249423Sdim return (0); 1144249423Sdim return (BUS_ALLOC_RESOURCE(dev->parent, dev, type, rid, start, end, 1145249423Sdim count, flags)); 1146249423Sdim} 1147249423Sdim 1148249423Sdimint 1149249423Sdimbus_activate_resource(device_t dev, int type, int rid, struct resource *r) 1150249423Sdim{ 1151249423Sdim if (dev->parent == 0) 1152249423Sdim return (EINVAL); 1153249423Sdim return (BUS_ACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 1154249423Sdim} 1155249423Sdim 1156249423Sdimint 1157249423Sdimbus_deactivate_resource(device_t dev, int type, int rid, struct resource *r) 1158249423Sdim{ 1159249423Sdim if (dev->parent == 0) 1160249423Sdim return (EINVAL); 1161249423Sdim return (BUS_DEACTIVATE_RESOURCE(dev->parent, dev, type, rid, r)); 1162249423Sdim} 1163249423Sdim 1164249423Sdimint 1165249423Sdimbus_release_resource(device_t dev, int type, int rid, struct resource *r) 1166249423Sdim{ 1167249423Sdim if (dev->parent == 0) 1168249423Sdim return (EINVAL); 1169249423Sdim return (BUS_RELEASE_RESOURCE(dev->parent, dev, 1170249423Sdim type, rid, r)); 1171249423Sdim} 1172249423Sdim 1173249423Sdimstatic int 1174249423Sdimroot_setup_intr(device_t dev, device_t child, driver_intr_t *intr, void *arg, 1175249423Sdim void **cookiep) 1176249423Sdim{ 1177249423Sdim /* 1178249423Sdim * If an interrupt mapping gets to here something bad has happened. 1179249423Sdim */ 1180249423Sdim panic("root_setup_intr"); 1181249423Sdim} 1182249423Sdim 1183249423Sdimstatic device_method_t root_methods[] = { 1184249423Sdim /* Device interface */ 1185249423Sdim DEVMETHOD(device_suspend, bus_generic_suspend), 1186223017Sdim DEVMETHOD(device_resume, bus_generic_resume), 1187223017Sdim 1188223017Sdim /* Bus interface */ 1189223017Sdim DEVMETHOD(bus_print_child, bus_generic_print_child), 1190223017Sdim DEVMETHOD(bus_read_ivar, bus_generic_read_ivar), 1191223017Sdim DEVMETHOD(bus_write_ivar, bus_generic_write_ivar), 1192223017Sdim DEVMETHOD(bus_setup_intr, root_setup_intr), 1193223017Sdim 1194223017Sdim { 0, 0 } 1195223017Sdim}; 1196223017Sdim 1197223017Sdimstatic driver_t root_driver = { 1198223017Sdim "root", 1199223017Sdim root_methods, 1200223017Sdim DRIVER_TYPE_MISC, 1201223017Sdim 1, /* no softc */ 1202223017Sdim}; 1203223017Sdim 1204226633Sdimdevice_t root_bus; 1205226633Sdimdevclass_t root_devclass; 1206226633Sdim 1207226633Sdimstatic int 1208223017Sdimroot_bus_module_handler(module_t mod, int what, void* arg) 1209223017Sdim{ 1210223017Sdim switch (what) { 1211223017Sdim case MOD_LOAD: 1212223017Sdim compile_methods(&root_driver); 1213223017Sdim root_bus = make_device(NULL, "root", 0, NULL); 1214263508Sdim root_bus->desc = "System root bus"; 1215263508Sdim root_bus->ops = root_driver.ops; 1216243830Sdim root_bus->driver = &root_driver; 1217243830Sdim root_bus->state = DS_ATTACHED; 1218223017Sdim root_devclass = devclass_find_internal("root", FALSE); 1219193326Sed return 0; 1220218893Sdim } 1221251662Sdim 1222251662Sdim return 0; 1223251662Sdim} 1224251662Sdim 1225251662Sdimstatic moduledata_t root_bus_mod = { 1226251662Sdim "rootbus", 1227193326Sed root_bus_module_handler, 1228193326Sed 0 1229263508Sdim}; 1230207619SrdivackyDECLARE_MODULE(rootbus, root_bus_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 1231207619Srdivacky 1232207619Srdivackyvoid 1233249423Sdimroot_bus_configure(void) 1234249423Sdim{ 1235249423Sdim device_t dev; 1236251662Sdim 1237249423Sdim PDEBUG((".")); 1238249423Sdim 1239249423Sdim for (dev = TAILQ_FIRST(&root_bus->children); dev; 1240249423Sdim dev = TAILQ_NEXT(dev, link)) { 1241221345Sdim device_probe_and_attach(dev); 1242249423Sdim } 1243207619Srdivacky} 1244193326Sed 1245224145Sdimint 1246234353Sdimdriver_module_handler(module_t mod, int what, void *arg) 1247224145Sdim{ 1248224145Sdim int error, i; 1249224145Sdim struct driver_module_data *dmd; 1250224145Sdim devclass_t bus_devclass; 1251263508Sdim 1252263508Sdim dmd = (struct driver_module_data *)arg; 1253263508Sdim bus_devclass = devclass_find_internal(dmd->dmd_busname, TRUE); 1254263508Sdim error = 0; 1255263508Sdim 1256263508Sdim switch (what) { 1257263508Sdim case MOD_LOAD: 1258263508Sdim for (i = 0; !error && i < dmd->dmd_ndrivers; i++) { 1259263508Sdim PDEBUG(("Loading module: driver %s on bus %s", 1260263508Sdim DRIVERNAME(dmd->dmd_drivers[i]), 1261263508Sdim dmd->dmd_busname)); 1262263508Sdim error = devclass_add_driver(bus_devclass, 1263263508Sdim dmd->dmd_drivers[i]); 1264263508Sdim } 1265263508Sdim if (error) 1266263508Sdim break; 1267263508Sdim 1268243830Sdim /* 1269263508Sdim * The drivers loaded in this way are assumed to all 1270263508Sdim * implement the same devclass. 1271263508Sdim */ 1272263508Sdim *dmd->dmd_devclass = 1273263508Sdim devclass_find_internal(dmd->dmd_drivers[0]->name, 1274263508Sdim TRUE); 1275263508Sdim break; 1276224145Sdim 1277224145Sdim case MOD_UNLOAD: 1278224145Sdim for (i = 0; !error && i < dmd->dmd_ndrivers; i++) { 1279234353Sdim PDEBUG(("Unloading module: driver %s from bus %s", 1280224145Sdim DRIVERNAME(dmd->dmd_drivers[i]), 1281224145Sdim dmd->dmd_busname)); 1282224145Sdim error = devclass_delete_driver(bus_devclass, 1283224145Sdim dmd->dmd_drivers[i]); 1284218893Sdim } 1285193326Sed break; 1286193326Sed } 1287198092Srdivacky 1288223017Sdim if (!error && dmd->dmd_chainevh) 1289223017Sdim error = dmd->dmd_chainevh(mod, what, dmd->dmd_chainarg); 1290218893Sdim return (error); 1291198092Srdivacky} 1292193326Sed 1293207619Srdivacky#ifdef BUS_DEBUG 1294207619Srdivacky 1295207619Srdivacky/* the _short versions avoid iteration by not calling anything that prints 1296207619Srdivacky * more than oneliners. I love oneliners. 1297207619Srdivacky */ 1298263508Sdim 1299251662Sdimstatic void 1300263508Sdimprint_method_list(device_method_t *m, int indent) 1301207619Srdivacky{ 1302207619Srdivacky int i; 1303193326Sed 1304193326Sed if (!m) 1305193326Sed return; 1306207619Srdivacky 1307207619Srdivacky for (i = 0; m->desc; i++, m++) 1308207619Srdivacky indentprintf(("method %d: %s, offset=%d\n", 1309207619Srdivacky i, m->desc->name, m->desc->offset)); 1310193326Sed} 1311207619Srdivacky 1312234353Sdimstatic void 1313193326Sedprint_device_ops(device_ops_t ops, int indent) 1314198092Srdivacky{ 1315234353Sdim int i; 1316234353Sdim int count = 0; 1317234353Sdim 1318234353Sdim if (!ops) 1319234353Sdim return; 1320234353Sdim 1321249423Sdim /* we present a list of the methods that are pointing to the 1322249423Sdim * error_method, but ignore the 0'th elements; it is always 1323249423Sdim * error_method. 1324249423Sdim */ 1325251662Sdim for (i = 1; i < ops->maxoffset; i++) { 1326249423Sdim if (ops->methods[i] == error_method) { 1327249423Sdim if (count == 0) 1328249423Sdim indentprintf(("error_method:")); 1329249423Sdim printf(" %d", i); 1330249423Sdim count++; 1331249423Sdim } 1332249423Sdim } 1333249423Sdim if (count) 1334249423Sdim printf("\n"); 1335249423Sdim 1336249423Sdim indentprintf(("(%d method%s, %d valid, %d error_method%s)\n", 1337207619Srdivacky ops->maxoffset-1, (ops->maxoffset-1 == 1? "":"s"), 1338234353Sdim ops->maxoffset-1-count, 1339239462Sdim count, (count == 1? "":"'s"))); 1340207619Srdivacky} 1341193326Sed 1342218893Sdimstatic void 1343234353Sdimprint_device_short(device_t dev, int indent) 1344251662Sdim{ 1345207619Srdivacky if (!dev) 1346207619Srdivacky return; 1347207619Srdivacky 1348207619Srdivacky indentprintf(("device %d: <%s> %sparent,%schildren,%s%s%s%sivars,%ssoftc,busy=%d\n", 1349193326Sed dev->unit, dev->desc, 1350193326Sed (dev->parent? "":"no "), 1351193326Sed (TAILQ_EMPTY(&dev->children)? "no ":""), 1352193326Sed (dev->flags&DF_ENABLED? "enabled,":"disabled,"), 1353263508Sdim (dev->flags&DF_FIXEDCLASS? "fixed,":""), 1354207619Srdivacky (dev->flags&DF_WILDCARD? "wildcard,":""), 1355207619Srdivacky (dev->ivars? "":"no "), 1356207619Srdivacky (dev->softc? "":"no "), 1357239462Sdim dev->busy)); 1358239462Sdim} 1359221345Sdim 1360221345Sdimstatic void 1361207619Srdivackyprint_device(device_t dev, int indent) 1362193326Sed{ 1363193326Sed if (!dev) 1364263508Sdim return; 1365198092Srdivacky 1366193326Sed print_device_short(dev, indent); 1367263508Sdim 1368207619Srdivacky indentprintf(("Parent:\n")); 1369193326Sed print_device_short(dev->parent, indent+1); 1370263508Sdim indentprintf(("Methods:\n")); 1371193326Sed print_device_ops(dev->ops, indent+1); 1372193326Sed indentprintf(("Driver:\n")); 1373193326Sed print_driver_short(dev->driver, indent+1); 1374263508Sdim indentprintf(("Devclass:\n")); 1375234353Sdim print_devclass_short(dev->devclass, indent+1); 1376234353Sdim} 1377263508Sdim 1378263508Sdimvoid 1379234353Sdimprint_device_tree_short(device_t dev, int indent) 1380193326Sed/* print the device and all its children (indented) */ 1381193326Sed{ 1382193326Sed device_t child; 1383224145Sdim 1384221345Sdim if (!dev) 1385234353Sdim return; 1386251662Sdim 1387234353Sdim print_device_short(dev, indent); 1388234353Sdim 1389224145Sdim for (child = TAILQ_FIRST(&dev->children); child; 1390224145Sdim child = TAILQ_NEXT(child, link)) 1391234353Sdim print_device_tree_short(child, indent+1); 1392193326Sed} 1393193326Sed 1394193326Sedvoid 1395193326Sedprint_device_tree(device_t dev, int indent) 1396234353Sdim/* print the device and all its children (indented) */ 1397234353Sdim{ 1398234353Sdim device_t child; 1399234353Sdim 1400234353Sdim if (!dev) 1401234353Sdim return; 1402234353Sdim 1403234353Sdim print_device(dev, indent); 1404234353Sdim 1405234353Sdim for (child = TAILQ_FIRST(&dev->children); child; 1406234353Sdim child = TAILQ_NEXT(child, link)) 1407239462Sdim print_device_tree(child, indent+1); 1408239462Sdim} 1409234353Sdim 1410234353Sdimstatic void 1411234353Sdimprint_driver_short(driver_t *driver, int indent) 1412234353Sdim{ 1413234353Sdim if (!driver) 1414234353Sdim return; 1415234353Sdim 1416234353Sdim indentprintf(("driver %s: type = %s%s%s%s, softc size = %d\n", 1417234353Sdim driver->name, 1418234353Sdim /* yes, I know this looks silly, but going to bed at 1419234353Sdim * two o'clock and having to get up at 7:30 again is silly 1420221345Sdim * as well. As is sticking your head in a bucket of water. 1421221345Sdim */ 1422221345Sdim (driver->type == DRIVER_TYPE_TTY? "tty":""), 1423221345Sdim (driver->type == DRIVER_TYPE_BIO? "bio":""), 1424221345Sdim (driver->type == DRIVER_TYPE_NET? "net":""), 1425221345Sdim (driver->type == DRIVER_TYPE_MISC? "misc":""), 1426221345Sdim driver->softc)); 1427221345Sdim} 1428221345Sdim 1429221345Sdimstatic void 1430221345Sdimprint_driver(driver_t *driver, int indent) 1431221345Sdim{ 1432221345Sdim if (!driver) 1433221345Sdim return; 1434221345Sdim 1435221345Sdim print_driver_short(driver, indent); 1436221345Sdim indentprintf(("Methods:\n")); 1437239462Sdim print_method_list(driver->methods, indent+1); 1438239462Sdim indentprintf(("Operations:\n")); 1439239462Sdim print_device_ops(driver->ops, indent+1); 1440239462Sdim} 1441239462Sdim 1442239462Sdim 1443239462Sdimstatic void 1444239462Sdimprint_driver_list(driver_list_t drivers, int indent) 1445239462Sdim{ 1446239462Sdim driver_t *driver; 1447243830Sdim 1448243830Sdim for (driver = TAILQ_FIRST(&drivers); driver; 1449239462Sdim driver = TAILQ_NEXT(driver, link)) 1450239462Sdim print_driver(driver, indent); 1451239462Sdim} 1452239462Sdim 1453239462Sdimstatic void 1454239462Sdimprint_devclass_short(devclass_t dc, int indent) 1455239462Sdim{ 1456239462Sdim if ( !dc ) 1457239462Sdim return; 1458239462Sdim 1459239462Sdim indentprintf(("devclass %s: max units = %d, next unit = %d\n", 1460239462Sdim dc->name, dc->maxunit, dc->nextunit)); 1461239462Sdim} 1462239462Sdim 1463239462Sdimstatic void 1464239462Sdimprint_devclass(devclass_t dc, int indent) 1465239462Sdim{ 1466239462Sdim int i; 1467239462Sdim 1468239462Sdim if ( !dc ) 1469239462Sdim return; 1470243830Sdim 1471243830Sdim print_devclass_short(dc, indent); 1472239462Sdim indentprintf(("Drivers:\n")); 1473239462Sdim print_driver_list(dc->drivers, indent+1); 1474239462Sdim 1475239462Sdim indentprintf(("Devices:\n")); 1476239462Sdim for (i = 0; i < dc->maxunit; i++) 1477243830Sdim if (dc->devices[i]) 1478243830Sdim print_device(dc->devices[i], indent+1); 1479243830Sdim} 1480243830Sdim 1481243830Sdimvoid 1482239462Sdimprint_devclass_list_short(void) 1483243830Sdim{ 1484243830Sdim devclass_t dc; 1485243830Sdim 1486243830Sdim printf("Short listing of devclasses, drivers & devices:\n"); 1487243830Sdim for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) 1488239462Sdim print_devclass_short(dc, 0); 1489243830Sdim} 1490243830Sdim 1491243830Sdimvoid 1492243830Sdimprint_devclass_list(void) 1493239462Sdim{ 1494239462Sdim devclass_t dc; 1495207619Srdivacky 1496207619Srdivacky printf("Full listing of devclasses, drivers & devices:\n"); 1497212904Sdim for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link)) 1498207619Srdivacky print_devclass(dc, 0); 1499224145Sdim} 1500224145Sdim 1501218893Sdim#endif 1502218893Sdim