1 /* $NetBSD: device.h,v 1.190 2025/03/19 20:47:49 jakllsch Exp $ */ 2 3 /* 4 * Copyright (c) 2021 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* 30 * Copyright (c) 1996, 2000 Christopher G. Demetriou 31 * All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, this list of conditions and the following disclaimer. 38 * 2. Redistributions in binary form must reproduce the above copyright 39 * notice, this list of conditions and the following disclaimer in the 40 * documentation and/or other materials provided with the distribution. 41 * 3. All advertising materials mentioning features or use of this software 42 * must display the following acknowledgement: 43 * This product includes software developed for the 44 * NetBSD Project. See http://www.NetBSD.org/ for 45 * information about NetBSD. 46 * 4. The name of the author may not be used to endorse or promote products 47 * derived from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 50 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 51 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 52 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 53 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 54 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 55 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 56 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 57 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 58 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 59 * 60 * --(license Id: LICENSE.proto,v 1.1 2000/06/13 21:40:26 cgd Exp )-- 61 */ 62 63 /* 64 * Copyright (c) 1992, 1993 65 * The Regents of the University of California. All rights reserved. 66 * 67 * This software was developed by the Computer Systems Engineering group 68 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 69 * contributed to Berkeley. 70 * 71 * All advertising materials mentioning features or use of this software 72 * must display the following acknowledgement: 73 * This product includes software developed by the University of 74 * California, Lawrence Berkeley Laboratories. 75 * 76 * Redistribution and use in source and binary forms, with or without 77 * modification, are permitted provided that the following conditions 78 * are met: 79 * 1. Redistributions of source code must retain the above copyright 80 * notice, this list of conditions and the following disclaimer. 81 * 2. Redistributions in binary form must reproduce the above copyright 82 * notice, this list of conditions and the following disclaimer in the 83 * documentation and/or other materials provided with the distribution. 84 * 3. Neither the name of the University nor the names of its contributors 85 * may be used to endorse or promote products derived from this software 86 * without specific prior written permission. 87 * 88 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 89 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 90 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 91 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 92 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 93 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 94 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 95 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 96 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 97 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 98 * SUCH DAMAGE. 99 * 100 * @(#)device.h 8.2 (Berkeley) 2/17/94 101 */ 102 103 #ifndef _SYS_DEVICE_H_ 104 #define _SYS_DEVICE_H_ 105 106 #include <sys/device_if.h> 107 #include <sys/evcnt.h> 108 #include <sys/queue.h> 109 110 #if defined(_KERNEL) || defined(_KMEMUSER) 111 #include <sys/mutex.h> 112 #include <sys/condvar.h> 113 #include <sys/pmf.h> 114 #endif 115 116 #include <prop/proplib.h> 117 118 /* 119 * Minimal device structures. 120 * Note that all ``system'' device types are listed here. 121 */ 122 typedef enum devclass { 123 DV_DULL, /* generic, no special info */ 124 DV_CPU, /* CPU (carries resource utilization) */ 125 DV_DISK, /* disk drive (label, etc) */ 126 DV_IFNET, /* network interface */ 127 DV_TAPE, /* tape device */ 128 DV_TTY, /* serial line interface (?) */ 129 DV_AUDIODEV, /* audio device */ 130 DV_DISPLAYDEV, /* display device */ 131 DV_BUS, /* bus device */ 132 DV_VIRTUAL, /* unbacked virtual device */ 133 } devclass_t; 134 135 /* 136 * Actions for ca_activate. 137 */ 138 typedef enum devact { 139 DVACT_DEACTIVATE /* deactivate the device */ 140 } devact_t; 141 142 typedef enum { 143 DVA_SYSTEM, 144 DVA_HARDWARE 145 } devactive_t; 146 147 typedef struct cfdata *cfdata_t; 148 typedef struct cfdriver *cfdriver_t; 149 typedef struct cfattach *cfattach_t; 150 151 #if defined(_KERNEL) || defined(_KMEMUSER) || defined(_STANDALONE) 152 /* 153 * devhandle_t -- 154 * 155 * This is an abstraction of the device handles used by ACPI, 156 * OpenFirmware, and others, to support device enumeration and 157 * device tree linkage. A devhandle_t can be safely passed 158 * by value. 159 */ 160 struct devhandle { 161 const struct devhandle_impl * impl; 162 union { 163 /* 164 * Storage for the device handle. Which storage field 165 * is used is at the sole discretion of the type 166 * implementation. 167 */ 168 void * pointer; 169 const void * const_pointer; 170 uintptr_t uintptr; 171 intptr_t integer; 172 }; 173 }; 174 typedef struct devhandle devhandle_t; 175 #endif 176 177 #if defined(_KERNEL) || defined(_KMEMUSER) 178 struct device_compatible_entry { 179 union { 180 const char *compat; 181 uintptr_t id; 182 }; 183 union { 184 const void *data; 185 uintptr_t value; 186 }; 187 }; 188 189 #define DEVICE_COMPAT_EOL { .compat = NULL } 190 191 struct device_suspensor { 192 const device_suspensor_t *ds_delegator; 193 char ds_name[32]; 194 }; 195 196 struct device_garbage { 197 device_t *dg_devs; 198 int dg_ndevs; 199 }; 200 201 202 typedef enum { 203 /* Used to represent invalid states. */ 204 DEVHANDLE_TYPE_INVALID = 0, 205 206 /* ACPI */ 207 DEVHANDLE_TYPE_ACPI = 0x41435049, /* 'ACPI' */ 208 209 /* OpenFirmware, FDT */ 210 DEVHANDLE_TYPE_OF = 0x4f504657, /* 'OPFW' */ 211 212 /* Sun OpenBoot */ 213 DEVHANDLE_TYPE_OPENBOOT = 0x4f504254, /* 'OPBT' */ 214 215 /* Private (opaque data) */ 216 DEVHANDLE_TYPE_PRIVATE = 0x50525654, /* 'PRVT' */ 217 218 /* Max value. */ 219 DEVHANDLE_TYPE_MAX = 0xffffffff 220 } devhandle_type_t; 221 222 /* Device method call function signature. */ 223 typedef int (*device_call_t)(device_t, devhandle_t, void *); 224 225 struct device_call_descriptor { 226 const char *name; 227 device_call_t call; 228 }; 229 230 #define _DEVICE_CALL_REGISTER(_g_, _c_) \ 231 __link_set_add_rodata(_g_, __CONCAT(_c_,_descriptor)); 232 #define DEVICE_CALL_REGISTER(_g_, _n_, _c_) \ 233 static const struct device_call_descriptor __CONCAT(_c_,_descriptor) = {\ 234 .name = (_n_), .call = (_c_) \ 235 }; \ 236 _DEVICE_CALL_REGISTER(_g_, _c_) 237 238 struct devhandle_impl { 239 devhandle_type_t type; 240 const struct devhandle_impl * super; 241 device_call_t (*lookup_device_call)(devhandle_t, 242 const char *, devhandle_t *); 243 }; 244 245 /* Max size of a device external name (including terminating NUL) */ 246 #define DEVICE_XNAME_SIZE 16 247 248 struct device; 249 250 /* 251 * struct cfattach::ca_flags (must not overlap with device_impl.h 252 * struct device::dv_flags for now) 253 */ 254 #define DVF_PRIV_ALLOC 0x0002 /* device private storage != device */ 255 #define DVF_DETACH_SHUTDOWN 0x0080 /* device detaches safely at shutdown */ 256 257 #ifdef _KERNEL 258 TAILQ_HEAD(devicelist, device); 259 #endif 260 261 enum deviter_flags { 262 DEVITER_F_RW = 0x1 263 , DEVITER_F_SHUTDOWN = 0x2 264 , DEVITER_F_LEAVES_FIRST = 0x4 265 , DEVITER_F_ROOT_FIRST = 0x8 266 }; 267 268 typedef enum deviter_flags deviter_flags_t; 269 270 struct deviter { 271 device_t di_prev; 272 deviter_flags_t di_flags; 273 int di_curdepth; 274 int di_maxdepth; 275 devgen_t di_gen; 276 }; 277 278 typedef struct deviter deviter_t; 279 280 struct shutdown_state { 281 bool initialized; 282 deviter_t di; 283 }; 284 #endif 285 286 /* 287 * Description of a locator, as part of interface attribute definitions. 288 */ 289 struct cflocdesc { 290 const char *cld_name; 291 const char *cld_defaultstr; /* NULL if no default */ 292 int cld_default; 293 }; 294 295 /* 296 * Description of an interface attribute, provided by potential 297 * parent device drivers, referred to by child device configuration data. 298 */ 299 struct cfiattrdata { 300 const char *ci_name; 301 int ci_loclen; 302 const struct cflocdesc ci_locdesc[ 303 #if defined(__GNUC__) && __GNUC__ <= 2 304 0 305 #endif 306 ]; 307 }; 308 309 /* 310 * Description of a configuration parent. Each device attachment attaches 311 * to an "interface attribute", which is given in this structure. The parent 312 * *must* carry this attribute. Optionally, an individual device instance 313 * may also specify a specific parent device instance. 314 */ 315 struct cfparent { 316 const char *cfp_iattr; /* interface attribute */ 317 const char *cfp_parent; /* optional specific parent */ 318 int cfp_unit; /* optional specific unit 319 (DVUNIT_ANY to wildcard) */ 320 }; 321 322 /* 323 * Configuration data (i.e., data placed in ioconf.c). 324 */ 325 struct cfdata { 326 const char *cf_name; /* driver name */ 327 const char *cf_atname; /* attachment name */ 328 unsigned int cf_unit:24; /* unit number */ 329 unsigned char cf_fstate; /* finding state (below) */ 330 int *cf_loc; /* locators (machine dependent) */ 331 int cf_flags; /* flags from config */ 332 const struct cfparent *cf_pspec;/* parent specification */ 333 }; 334 #define FSTATE_NOTFOUND 0 /* has not been found */ 335 #define FSTATE_FOUND 1 /* has been found */ 336 #define FSTATE_STAR 2 /* duplicable */ 337 #define FSTATE_DSTAR 3 /* has not been found, and disabled */ 338 #define FSTATE_DNOTFOUND 4 /* duplicate, and disabled */ 339 340 /* 341 * Multiple configuration data tables may be maintained. This structure 342 * provides the linkage. 343 */ 344 struct cftable { 345 cfdata_t ct_cfdata; /* pointer to cfdata table */ 346 TAILQ_ENTRY(cftable) ct_list; /* list linkage */ 347 }; 348 #ifdef _KERNEL 349 TAILQ_HEAD(cftablelist, cftable); 350 #endif 351 352 typedef int (*cfsubmatch_t)(device_t, cfdata_t, const int *, void *); 353 typedef int (*cfsearch_t)(device_t, cfdata_t, const int *, void *); 354 355 /* 356 * `configuration' attachment and driver (what the machine-independent 357 * autoconf uses). As devices are found, they are applied against all 358 * the potential matches. The one with the best match is taken, and a 359 * device structure (plus any other data desired) is allocated. Pointers 360 * to these are placed into an array of pointers. The array itself must 361 * be dynamic since devices can be found long after the machine is up 362 * and running. 363 * 364 * Devices can have multiple configuration attachments if they attach 365 * to different attributes (busses, or whatever), to allow specification 366 * of multiple match and attach functions. There is only one configuration 367 * driver per driver, so that things like unit numbers and the device 368 * structure array will be shared. 369 */ 370 struct cfattach { 371 const char *ca_name; /* name of attachment */ 372 LIST_ENTRY(cfattach) ca_list; /* link on cfdriver's list */ 373 size_t ca_devsize; /* size of dev data (for alloc) */ 374 int ca_flags; /* flags for driver allocation etc */ 375 int (*ca_match)(device_t, cfdata_t, void *); 376 void (*ca_attach)(device_t, device_t, void *); 377 int (*ca_detach)(device_t, int); 378 int (*ca_activate)(device_t, devact_t); 379 /* technically, the next 2 belong into "struct cfdriver" */ 380 int (*ca_rescan)(device_t, const char *, 381 const int *); /* scan for new children */ 382 void (*ca_childdetached)(device_t, device_t); 383 }; 384 LIST_HEAD(cfattachlist, cfattach); 385 386 #define CFATTACH_DECL3_NEW(name, ddsize, matfn, attfn, detfn, actfn, \ 387 rescanfn, chdetfn, __flags) \ 388 struct cfattach __CONCAT(name,_ca) = { \ 389 .ca_name = ___STRING(name), \ 390 .ca_devsize = ddsize, \ 391 .ca_flags = (__flags) | DVF_PRIV_ALLOC, \ 392 .ca_match = matfn, \ 393 .ca_attach = attfn, \ 394 .ca_detach = detfn, \ 395 .ca_activate = actfn, \ 396 .ca_rescan = rescanfn, \ 397 .ca_childdetached = chdetfn, \ 398 } 399 400 #define CFATTACH_DECL2_NEW(name, ddsize, matfn, attfn, detfn, actfn, \ 401 rescanfn, chdetfn) \ 402 CFATTACH_DECL3_NEW(name, ddsize, matfn, attfn, detfn, actfn, \ 403 rescanfn, chdetfn, 0) 404 405 #define CFATTACH_DECL_NEW(name, ddsize, matfn, attfn, detfn, actfn) \ 406 CFATTACH_DECL2_NEW(name, ddsize, matfn, attfn, detfn, actfn, NULL, NULL) 407 408 /* Flags given to config_detach(), and the ca_detach function. */ 409 #define DETACH_FORCE 0x01 /* force detachment; hardware gone */ 410 #define DETACH_QUIET 0x02 /* don't print a notice */ 411 #define DETACH_SHUTDOWN 0x04 /* detach because of system shutdown */ 412 #define DETACH_POWEROFF 0x08 /* going to power off; power down devices */ 413 414 struct cfdriver { 415 LIST_ENTRY(cfdriver) cd_list; /* link on allcfdrivers */ 416 struct cfattachlist cd_attach; /* list of all attachments */ 417 device_t *cd_devs; /* devices found */ 418 const char *cd_name; /* device name */ 419 enum devclass cd_class; /* device classification */ 420 int cd_ndevs; /* size of cd_devs array */ 421 const struct cfiattrdata * const *cd_attrs; /* attributes provided */ 422 }; 423 LIST_HEAD(cfdriverlist, cfdriver); 424 425 #define CFDRIVER_DECL(name, class, attrs) \ 426 struct cfdriver __CONCAT(name,_cd) = { \ 427 .cd_name = ___STRING(name), \ 428 .cd_class = class, \ 429 .cd_attrs = attrs, \ 430 } 431 432 /* 433 * The cfattachinit is a data structure used to associate a list of 434 * cfattach's with cfdrivers as found in the static kernel configuration. 435 */ 436 struct cfattachinit { 437 const char *cfai_name; /* driver name */ 438 struct cfattach * const *cfai_list;/* list of attachments */ 439 }; 440 441 /* 442 * Configuration printing functions, and their return codes. The second 443 * argument is NULL if the device was configured; otherwise it is the name 444 * of the parent device. The return value is ignored if the device was 445 * configured, so most functions can return UNCONF unconditionally. 446 */ 447 typedef int (*cfprint_t)(void *, const char *); /* XXX const char * */ 448 #define QUIET 0 /* print nothing */ 449 #define UNCONF 1 /* print " not configured\n" */ 450 #define UNSUPP 2 /* print " not supported\n" */ 451 452 /* 453 * Pseudo-device attach information (function + number of pseudo-devs). 454 */ 455 struct pdevinit { 456 void (*pdev_attach)(int); 457 int pdev_count; 458 }; 459 460 /* This allows us to wildcard a device unit. */ 461 #define DVUNIT_ANY -1 462 463 #if defined(_KERNEL) || defined(_KMEMUSER) || defined(_STANDALONE) 464 /* 465 * Arguments passed to config_search() and config_found(). 466 */ 467 struct cfargs { 468 uintptr_t cfargs_version; /* version field */ 469 470 /* version 1 fields */ 471 cfsubmatch_t submatch; /* submatch function (direct config) */ 472 cfsearch_t search; /* search function (indirect config) */ 473 const char * iattr; /* interface attribute */ 474 const int * locators; /* locators array */ 475 devhandle_t devhandle; /* devhandle_t (by value) */ 476 477 /* version 2 fields below here */ 478 }; 479 480 #define CFARGS_VERSION 1 /* current cfargs version */ 481 482 #define CFARGS_NONE NULL /* no cfargs to pass */ 483 484 /* 485 * Construct a cfargs with this macro, like so: 486 * 487 * CFARGS(.submatch = config_stdsubmatch, 488 * .devhandle = my_devhandle) 489 * 490 * You must supply at least one field. If you don't need any, use the 491 * CFARGS_NONE macro. 492 */ 493 #define CFARGS(...) \ 494 &((const struct cfargs){ \ 495 .cfargs_version = CFARGS_VERSION, \ 496 __VA_ARGS__ \ 497 }) 498 #endif /* _KERNEL || _KMEMUSER || _STANDALONE */ 499 500 #ifdef _KERNEL 501 502 extern struct cfdriverlist allcfdrivers;/* list of all cfdrivers */ 503 extern struct cftablelist allcftables; /* list of all cfdata tables */ 504 extern device_t booted_device; /* the device we booted from */ 505 extern const char *booted_method; /* the method the device was found */ 506 extern int booted_partition; /* the partition on that device */ 507 extern daddr_t booted_startblk; /* or the start of a wedge */ 508 extern uint64_t booted_nblks; /* and the size of that wedge */ 509 extern char *bootspec; /* and the device/wedge name */ 510 extern bool root_is_mounted; /* true if root is mounted */ 511 512 struct vnode *opendisk(device_t); 513 int getdisksize(struct vnode *, uint64_t *, unsigned int *); 514 struct dkwedge_info; 515 int getdiskinfo(struct vnode *, struct dkwedge_info *); 516 517 void config_init(void); 518 int config_init_component(struct cfdriver *const*, 519 const struct cfattachinit *, struct cfdata *); 520 int config_fini_component(struct cfdriver *const*, 521 const struct cfattachinit *, struct cfdata *); 522 void config_init_mi(void); 523 void drvctl_init(void); 524 void drvctl_fini(void); 525 extern int (*devmon_insert_vec)(const char *, prop_dictionary_t); 526 527 int config_cfdriver_attach(struct cfdriver *); 528 int config_cfdriver_detach(struct cfdriver *); 529 530 int config_cfattach_attach(const char *, struct cfattach *); 531 int config_cfattach_detach(const char *, struct cfattach *); 532 533 int config_cfdata_attach(cfdata_t, int); 534 int config_cfdata_detach(cfdata_t); 535 536 struct cfdriver *config_cfdriver_lookup(const char *); 537 struct cfattach *config_cfattach_lookup(const char *, const char *); 538 const struct cfiattrdata *cfiattr_lookup(const char *, const struct cfdriver *); 539 540 const char *cfdata_ifattr(const struct cfdata *); 541 542 int config_stdsubmatch(device_t, cfdata_t, const int *, void *); 543 cfdata_t config_search(device_t, void *, const struct cfargs *); 544 cfdata_t config_rootsearch(cfsubmatch_t, const char *, void *); 545 device_t config_found(device_t, void *, cfprint_t, const struct cfargs *); 546 device_t config_rootfound(const char *, void *); 547 device_t config_attach(device_t, cfdata_t, void *, cfprint_t, 548 const struct cfargs *); 549 device_t config_found_acquire(device_t, void *, cfprint_t, 550 const struct cfargs *); 551 device_t config_attach_acquire(device_t, cfdata_t, void *, cfprint_t, 552 const struct cfargs *); 553 int config_match(device_t, cfdata_t, void *); 554 int config_probe(device_t, cfdata_t, void *); 555 556 bool ifattr_match(const char *, const char *); 557 558 device_t config_attach_pseudo(cfdata_t); 559 device_t config_attach_pseudo_acquire(cfdata_t, void *); 560 561 int config_detach(device_t, int); 562 int config_detach_release(device_t, int); 563 int config_detach_children(device_t, int flags); 564 void config_detach_commit(device_t); 565 bool config_detach_all(int); 566 int config_deactivate(device_t); 567 void config_defer(device_t, void (*)(device_t)); 568 void config_deferred(device_t); 569 void config_interrupts(device_t, void (*)(device_t)); 570 void config_mountroot(device_t, void (*)(device_t)); 571 void config_pending_incr(device_t); 572 void config_pending_decr(device_t); 573 void config_create_interruptthreads(void); 574 void config_create_mountrootthreads(void); 575 576 int config_finalize_register(device_t, int (*)(device_t)); 577 void config_finalize(void); 578 void config_finalize_mountroot(void); 579 580 void config_twiddle_init(void); 581 void config_twiddle_fn(void *); 582 583 void null_childdetached(device_t, device_t); 584 585 device_t device_lookup(cfdriver_t, int); 586 void *device_lookup_private(cfdriver_t, int); 587 588 device_t device_lookup_acquire(cfdriver_t, int); 589 void device_acquire(device_t); 590 void device_release(device_t); 591 592 void device_register(device_t, void *); 593 void device_register_post_config(device_t, void *); 594 595 devclass_t device_class(device_t); 596 cfdata_t device_cfdata(device_t); 597 cfdriver_t device_cfdriver(device_t); 598 cfattach_t device_cfattach(device_t); 599 int device_unit(device_t); 600 const char *device_xname(device_t); 601 device_t device_parent(device_t); 602 bool device_is_active(device_t); 603 bool device_activation(device_t, devact_level_t); 604 bool device_is_enabled(device_t); 605 bool device_has_power(device_t); 606 int device_locator(device_t, u_int); 607 void *device_private(device_t); 608 void device_set_private(device_t, void *); 609 prop_dictionary_t device_properties(device_t); 610 void device_set_handle(device_t, devhandle_t); 611 devhandle_t device_handle(device_t); 612 613 bool devhandle_is_valid(devhandle_t); 614 devhandle_t devhandle_invalid(void); 615 devhandle_type_t devhandle_type(devhandle_t); 616 int devhandle_compare(devhandle_t, devhandle_t); 617 devhandle_t devhandle_subclass(devhandle_t, struct devhandle_impl *, 618 device_call_t (*)(devhandle_t, const char *, 619 devhandle_t *)); 620 621 device_call_t devhandle_lookup_device_call(devhandle_t, const char *, 622 devhandle_t *); 623 void devhandle_impl_subclass(struct devhandle_impl *, 624 const struct devhandle_impl *, 625 device_call_t (*)(devhandle_t, const char *, 626 devhandle_t *)); 627 628 device_t deviter_first(deviter_t *, deviter_flags_t); 629 void deviter_init(deviter_t *, deviter_flags_t); 630 device_t deviter_next(deviter_t *); 631 void deviter_release(deviter_t *); 632 633 bool device_active(device_t, devactive_t); 634 bool device_active_register(device_t, 635 void (*)(device_t, devactive_t)); 636 void device_active_deregister(device_t, 637 void (*)(device_t, devactive_t)); 638 639 bool device_is_a(device_t, const char *); 640 bool device_attached_to_iattr(device_t, const char *); 641 642 device_t device_find_by_xname(const char *); 643 device_t device_find_by_driver_unit(const char *, int); 644 645 int device_enumerate_children(device_t, 646 bool (*)(device_t, devhandle_t, void *), void *); 647 648 int device_compatible_match(const char **, int, 649 const struct device_compatible_entry *); 650 int device_compatible_pmatch(const char **, int, 651 const struct device_compatible_entry *); 652 const struct device_compatible_entry * 653 device_compatible_lookup(const char **, int, 654 const struct device_compatible_entry *); 655 const struct device_compatible_entry * 656 device_compatible_plookup(const char **, int, 657 const struct device_compatible_entry *); 658 659 int device_compatible_match_strlist(const char *, size_t, 660 const struct device_compatible_entry *); 661 int device_compatible_pmatch_strlist(const char *, size_t, 662 const struct device_compatible_entry *); 663 const struct device_compatible_entry * 664 device_compatible_lookup_strlist(const char *, size_t, 665 const struct device_compatible_entry *); 666 const struct device_compatible_entry * 667 device_compatible_plookup_strlist(const char *, size_t, 668 const struct device_compatible_entry *); 669 670 int device_compatible_match_id(uintptr_t const, uintptr_t const, 671 const struct device_compatible_entry *); 672 const struct device_compatible_entry * 673 device_compatible_lookup_id(uintptr_t const, uintptr_t const, 674 const struct device_compatible_entry *); 675 676 void device_pmf_driver_child_register(device_t); 677 void device_pmf_driver_set_child_register(device_t, 678 void (*)(device_t)); 679 680 void *device_pmf_bus_private(device_t); 681 bool device_pmf_bus_suspend(device_t, const pmf_qual_t *); 682 bool device_pmf_bus_resume(device_t, const pmf_qual_t *); 683 bool device_pmf_bus_shutdown(device_t, int); 684 685 void device_pmf_bus_register(device_t, void *, 686 bool (*)(device_t, const pmf_qual_t *), 687 bool (*)(device_t, const pmf_qual_t *), 688 bool (*)(device_t, int), 689 void (*)(device_t)); 690 void device_pmf_bus_deregister(device_t); 691 692 device_t shutdown_first(struct shutdown_state *); 693 device_t shutdown_next(struct shutdown_state *); 694 695 /* 696 * device calls -- 697 * 698 * This provides a generic mechanism for invoking special methods on 699 * devices, often dependent on the device tree implementation used 700 * by the platform. 701 * 702 * While individual subsystems may define their own device calls, 703 * the ones prefixed with "device-" are reserved, and defined by 704 * the device autoconfiguration subsystem. It is the responsibility 705 * of each device tree back end to implement these calls. 706 * 707 * We define a generic interface; individual device calls feature 708 * type checking of the argument structure. The argument structures 709 * and the call binding data are automatically generated from device 710 * call interface descriptions by gendevcalls.awk. 711 */ 712 struct device_call_generic { 713 const char *name; 714 void *args; 715 }; 716 717 int device_call_generic(device_t, devhandle_t, 718 const struct device_call_generic *); 719 720 #define device_call(dev, call) \ 721 device_call_generic((dev), device_handle(dev), &(call)->generic) 722 #define devhandle_call(handle, call) \ 723 device_call_generic(NULL, (handle), &(call)->generic) 724 725 #endif /* _KERNEL */ 726 727 #endif /* !_SYS_DEVICE_H_ */ 728
Indexes created Sun Sep 21 18:09:52 GMT 2025