1 /*- 2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org> 3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org> 4 * Copyright (c) 2000, 2001 Michael Smith 5 * Copyright (c) 2000 BSDi 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #include "opt_acpi.h" 33 #include <sys/param.h> 34 #include <sys/kernel.h> 35 #include <sys/proc.h> 36 #include <sys/lock.h> 37 #include <sys/malloc.h> 38 #include <sys/mutex.h> 39 #include <sys/bus.h> 40 #include <sys/conf.h> 41 #include <sys/ioccom.h> 42 #include <sys/reboot.h> 43 #include <sys/sysctl.h> 44 #include <sys/ctype.h> 45 #include <sys/linker.h> 46 #include <sys/power.h> 47 48 #include <machine/clock.h> 49 #include <machine/resource.h> 50 51 #include <isa/isavar.h> 52 53 #include "acpi.h" 54 55 #include <dev/acpica/acpica_support.h> 56 57 #include <dev/acpica/acpivar.h> 58 #include <dev/acpica/acpiio.h> 59 60 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices"); 61 62 /* 63 * Hooks for the ACPI CA debugging infrastructure 64 */ 65 #define _COMPONENT ACPI_BUS 66 ACPI_MODULE_NAME("ACPI") 67 68 /* 69 * Character device 70 */ 71 72 static d_open_t acpiopen; 73 static d_close_t acpiclose; 74 static d_ioctl_t acpiioctl; 75 76 #define CDEV_MAJOR 152 77 static struct cdevsw acpi_cdevsw = { 78 acpiopen, 79 acpiclose, 80 noread, 81 nowrite, 82 acpiioctl, 83 nopoll, 84 nommap, 85 nostrategy, 86 "acpi", 87 CDEV_MAJOR, 88 nodump, 89 nopsize, 90 0 91 }; 92 93 static const char* sleep_state_names[] = { 94 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"}; 95 96 /* this has to be static, as the softc is gone when we need it */ 97 static int acpi_off_state = ACPI_STATE_S5; 98 99 struct mtx acpi_mutex; 100 101 static int acpi_modevent(struct module *mod, int event, void *junk); 102 static void acpi_identify(driver_t *driver, device_t parent); 103 static int acpi_probe(device_t dev); 104 static int acpi_attach(device_t dev); 105 static device_t acpi_add_child(device_t bus, int order, const char *name, int unit); 106 static int acpi_print_resources(struct resource_list *rl, const char *name, int type, 107 const char *format); 108 static int acpi_print_child(device_t bus, device_t child); 109 static int acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result); 110 static int acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value); 111 static int acpi_set_resource(device_t dev, device_t child, int type, int rid, u_long start, 112 u_long count); 113 static int acpi_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, 114 u_long *countp); 115 static struct resource *acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, 116 u_long start, u_long end, u_long count, u_int flags); 117 static int acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r); 118 static u_int32_t acpi_isa_get_logicalid(device_t dev); 119 static int acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids); 120 121 static void acpi_probe_children(device_t bus); 122 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status); 123 124 static void acpi_shutdown_pre_sync(void *arg, int howto); 125 static void acpi_shutdown_final(void *arg, int howto); 126 127 static void acpi_enable_fixed_events(struct acpi_softc *sc); 128 129 static void acpi_system_eventhandler_sleep(void *arg, int state); 130 static void acpi_system_eventhandler_wakeup(void *arg, int state); 131 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); 132 133 static int acpi_pm_func(u_long cmd, void *arg, ...); 134 135 static device_method_t acpi_methods[] = { 136 /* Device interface */ 137 DEVMETHOD(device_identify, acpi_identify), 138 DEVMETHOD(device_probe, acpi_probe), 139 DEVMETHOD(device_attach, acpi_attach), 140 DEVMETHOD(device_shutdown, bus_generic_shutdown), 141 DEVMETHOD(device_suspend, bus_generic_suspend), 142 DEVMETHOD(device_resume, bus_generic_resume), 143 144 /* Bus interface */ 145 DEVMETHOD(bus_add_child, acpi_add_child), 146 DEVMETHOD(bus_print_child, acpi_print_child), 147 DEVMETHOD(bus_read_ivar, acpi_read_ivar), 148 DEVMETHOD(bus_write_ivar, acpi_write_ivar), 149 DEVMETHOD(bus_set_resource, acpi_set_resource), 150 DEVMETHOD(bus_get_resource, acpi_get_resource), 151 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource), 152 DEVMETHOD(bus_release_resource, acpi_release_resource), 153 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 154 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 155 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 156 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 157 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 158 159 /* ISA emulation */ 160 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe), 161 162 {0, 0} 163 }; 164 165 static driver_t acpi_driver = { 166 "acpi", 167 acpi_methods, 168 sizeof(struct acpi_softc), 169 }; 170 171 static devclass_t acpi_devclass; 172 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0); 173 MODULE_VERSION(acpi, 100); 174 175 SYSCTL_INT(_debug, OID_AUTO, acpi_debug_layer, CTLFLAG_RW, &AcpiDbgLayer, 0, ""); 176 SYSCTL_INT(_debug, OID_AUTO, acpi_debug_level, CTLFLAG_RW, &AcpiDbgLevel, 0, ""); 177 static int acpi_ca_version = ACPI_CA_VERSION; 178 SYSCTL_INT(_debug, OID_AUTO, acpi_ca_version, CTLFLAG_RD, &acpi_ca_version, 0, ""); 179 180 /* 181 * ACPI can only be loaded as a module by the loader; activating it after 182 * system bootstrap time is not useful, and can be fatal to the system. 183 * It also cannot be unloaded, since the entire system bus heirarchy hangs off it. 184 */ 185 static int 186 acpi_modevent(struct module *mod, int event, void *junk) 187 { 188 switch(event) { 189 case MOD_LOAD: 190 if (!cold) 191 return(EPERM); 192 break; 193 case MOD_UNLOAD: 194 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI) 195 return(EBUSY); 196 break; 197 default: 198 break; 199 } 200 return(0); 201 } 202 203 /* 204 * Detect ACPI, perform early initialisation 205 */ 206 static void 207 acpi_identify(driver_t *driver, device_t parent) 208 { 209 device_t child; 210 int error; 211 #ifdef ENABLE_DEBUGGER 212 char *debugpoint; 213 #endif 214 215 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 216 217 if(!cold){ 218 printf("Don't load this driver from userland!!\n"); 219 return ; 220 } 221 222 /* 223 * Check that we haven't been disabled with a hint. 224 */ 225 if (!resource_int_value("acpi", 0, "disabled", &error) && 226 (error != 0)) 227 return_VOID; 228 229 /* 230 * Make sure we're not being doubly invoked. 231 */ 232 if (device_find_child(parent, "acpi", 0) != NULL) 233 return_VOID; 234 235 /* initialise the ACPI mutex */ 236 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF); 237 238 /* 239 * Start up the ACPI CA subsystem. 240 */ 241 #ifdef ENABLE_DEBUGGER 242 debugpoint = getenv("debug.acpi.debugger"); 243 if (debugpoint) { 244 if (!strcmp(debugpoint, "init")) 245 acpi_EnterDebugger(); 246 freeenv(debugpoint); 247 } 248 #endif 249 if (ACPI_FAILURE(error = AcpiInitializeSubsystem())) { 250 printf("ACPI: initialisation failed: %s\n", AcpiFormatException(error)); 251 return_VOID; 252 } 253 #ifdef ENABLE_DEBUGGER 254 debugpoint = getenv("debug.acpi.debugger"); 255 if (debugpoint) { 256 if (!strcmp(debugpoint, "tables")) 257 acpi_EnterDebugger(); 258 freeenv(debugpoint); 259 } 260 #endif 261 262 if (ACPI_FAILURE(error = AcpiLoadTables())) { 263 printf("ACPI: table load failed: %s\n", AcpiFormatException(error)); 264 return_VOID; 265 } 266 267 /* 268 * Attach the actual ACPI device. 269 */ 270 if ((child = BUS_ADD_CHILD(parent, 0, "acpi", 0)) == NULL) { 271 device_printf(parent, "ACPI: could not attach\n"); 272 return_VOID; 273 } 274 } 275 276 /* 277 * Fetch some descriptive data from ACPI to put in our attach message 278 */ 279 static int 280 acpi_probe(device_t dev) 281 { 282 ACPI_TABLE_HEADER th; 283 char buf[20]; 284 ACPI_STATUS status; 285 int error; 286 287 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 288 289 if (power_pm_get_type() != POWER_PM_TYPE_NONE && 290 power_pm_get_type() != POWER_PM_TYPE_ACPI) { 291 device_printf(dev, "Other PM system enabled.\n"); 292 return_VALUE(ENXIO); 293 } 294 295 ACPI_LOCK; 296 297 if (ACPI_FAILURE(status = AcpiGetTableHeader(ACPI_TABLE_XSDT, 1, &th))) { 298 device_printf(dev, "couldn't get XSDT header: %s\n", AcpiFormatException(status)); 299 error = ENXIO; 300 } else { 301 sprintf(buf, "%.6s %.8s", th.OemId, th.OemTableId); 302 device_set_desc_copy(dev, buf); 303 error = 0; 304 } 305 ACPI_UNLOCK; 306 return_VALUE(error); 307 } 308 309 static int 310 acpi_attach(device_t dev) 311 { 312 struct acpi_softc *sc; 313 ACPI_STATUS status; 314 int error; 315 UINT32 flags; 316 317 #ifdef ENABLE_DEBUGGER 318 char *debugpoint; 319 #endif 320 321 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 322 ACPI_LOCK; 323 sc = device_get_softc(dev); 324 bzero(sc, sizeof(*sc)); 325 sc->acpi_dev = dev; 326 327 #ifdef ENABLE_DEBUGGER 328 debugpoint = getenv("debug.acpi.debugger"); 329 if (debugpoint) { 330 if (!strcmp(debugpoint, "spaces")) 331 acpi_EnterDebugger(); 332 freeenv(debugpoint); 333 } 334 #endif 335 336 /* 337 * Install the default address space handlers. 338 */ 339 error = ENXIO; 340 if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 341 ACPI_ADR_SPACE_SYSTEM_MEMORY, 342 ACPI_DEFAULT_HANDLER, 343 NULL, NULL))) { 344 device_printf(dev, "could not initialise SystemMemory handler: %s\n", AcpiFormatException(status)); 345 goto out; 346 } 347 if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 348 ACPI_ADR_SPACE_SYSTEM_IO, 349 ACPI_DEFAULT_HANDLER, 350 NULL, NULL))) { 351 device_printf(dev, "could not initialise SystemIO handler: %s\n", AcpiFormatException(status)); 352 goto out; 353 } 354 if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 355 ACPI_ADR_SPACE_PCI_CONFIG, 356 ACPI_DEFAULT_HANDLER, 357 NULL, NULL))) { 358 device_printf(dev, "could not initialise PciConfig handler: %s\n", AcpiFormatException(status)); 359 goto out; 360 } 361 362 /* 363 * Bring ACPI fully online. 364 * 365 * Note that some systems (specifically, those with namespace evaluation issues 366 * that require the avoidance of parts of the namespace) must avoid running _INI 367 * and _STA on everything, as well as dodging the final object init pass. 368 * 369 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT). 370 * 371 * XXX We should arrange for the object init pass after we have attached all our 372 * child devices, but on many systems it works here. 373 */ 374 #ifdef ENABLE_DEBUGGER 375 debugpoint = getenv("debug.acpi.debugger"); 376 if (debugpoint) { 377 if (!strcmp(debugpoint, "enable")) 378 acpi_EnterDebugger(); 379 freeenv(debugpoint); 380 } 381 #endif 382 flags = 0; 383 if (testenv("debug.acpi.avoid")) 384 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; 385 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) { 386 device_printf(dev, "could not enable ACPI: %s\n", AcpiFormatException(status)); 387 goto out; 388 } 389 390 /* 391 * Setup our sysctl tree. 392 * 393 * XXX: This doesn't check to make sure that none of these fail. 394 */ 395 sysctl_ctx_init(&sc->acpi_sysctl_ctx); 396 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx, 397 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, 398 device_get_name(dev), CTLFLAG_RD, 0, ""); 399 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 400 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW, 401 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); 402 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 403 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW, 404 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); 405 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 406 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW, 407 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", ""); 408 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 409 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW, 410 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", ""); 411 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 412 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW, 413 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", ""); 414 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 415 OID_AUTO, "s4bios", CTLFLAG_RD | CTLFLAG_RW, 416 &sc->acpi_s4bios, 0, "S4BIOS mode"); 417 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 418 OID_AUTO, "verbose", CTLFLAG_RD | CTLFLAG_RW, 419 &sc->acpi_verbose, 0, "verbose mode"); 420 sc->acpi_s4bios = 1; 421 if (bootverbose) 422 sc->acpi_verbose = 1; 423 424 /* 425 * Dispatch the default sleep state to devices. 426 * TBD: should be configured from userland policy manager. 427 */ 428 sc->acpi_power_button_sx = ACPI_POWER_BUTTON_DEFAULT_SX; 429 sc->acpi_sleep_button_sx = ACPI_SLEEP_BUTTON_DEFAULT_SX; 430 sc->acpi_lid_switch_sx = ACPI_LID_SWITCH_DEFAULT_SX; 431 sc->acpi_standby_sx = ACPI_STATE_S1; 432 sc->acpi_suspend_sx = ACPI_STATE_S3; 433 434 acpi_enable_fixed_events(sc); 435 436 /* 437 * Scan the namespace and attach/initialise children. 438 */ 439 #ifdef ENABLE_DEBUGGER 440 debugpoint = getenv("debug.acpi.debugger"); 441 if (debugpoint) { 442 if (!strcmp(debugpoint, "probe")) 443 acpi_EnterDebugger(); 444 freeenv(debugpoint); 445 } 446 #endif 447 if (!acpi_disabled("bus")) 448 acpi_probe_children(dev); 449 450 /* 451 * Register our shutdown handlers 452 */ 453 EVENTHANDLER_REGISTER(shutdown_pre_sync, acpi_shutdown_pre_sync, sc, SHUTDOWN_PRI_LAST); 454 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc, SHUTDOWN_PRI_LAST); 455 456 /* 457 * Register our acpi event handlers. 458 * XXX should be configurable eg. via userland policy manager. 459 */ 460 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep, sc, ACPI_EVENT_PRI_LAST); 461 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup, sc, ACPI_EVENT_PRI_LAST); 462 463 /* 464 * Flag our initial states. 465 */ 466 sc->acpi_enabled = 1; 467 sc->acpi_sstate = ACPI_STATE_S0; 468 sc->acpi_sleep_disabled = 0; 469 470 /* 471 * Create the control device 472 */ 473 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, 0, 5, 0660, "acpi"); 474 sc->acpi_dev_t->si_drv1 = sc; 475 476 #ifdef ENABLE_DEBUGGER 477 debugpoint = getenv("debug.acpi.debugger"); 478 if (debugpoint) { 479 if (!strcmp(debugpoint, "running")) 480 acpi_EnterDebugger(); 481 freeenv(debugpoint); 482 } 483 #endif 484 485 #if defined(ACPI_MAX_THREADS) && ACPI_MAX_THREADS > 0 486 if ((error = acpi_task_thread_init())) { 487 goto out; 488 } 489 #endif 490 491 if ((error = acpi_machdep_init(dev))) { 492 goto out; 493 } 494 495 /* Register ACPI again to pass the correct argument of pm_func. */ 496 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc); 497 498 error = 0; 499 500 out: 501 ACPI_UNLOCK; 502 return_VALUE(error); 503 } 504 505 /* 506 * Handle a new device being added 507 */ 508 static device_t 509 acpi_add_child(device_t bus, int order, const char *name, int unit) 510 { 511 struct acpi_device *ad; 512 device_t child; 513 514 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT)) == NULL) 515 return(NULL); 516 bzero(ad, sizeof(*ad)); 517 518 resource_list_init(&ad->ad_rl); 519 520 child = device_add_child_ordered(bus, order, name, unit); 521 if (child != NULL) 522 device_set_ivars(child, ad); 523 return(child); 524 } 525 526 /* 527 * Print child device resource usage 528 */ 529 static int 530 acpi_print_resources(struct resource_list *rl, const char *name, int type, const char *format) 531 { 532 struct resource_list_entry *rle; 533 int printed, retval; 534 535 printed = 0; 536 retval = 0; 537 538 if (!SLIST_FIRST(rl)) 539 return(0); 540 541 /* Yes, this is kinda cheating */ 542 SLIST_FOREACH(rle, rl, link) { 543 if (rle->type == type) { 544 if (printed == 0) 545 retval += printf(" %s ", name); 546 else if (printed > 0) 547 retval += printf(","); 548 printed++; 549 retval += printf(format, rle->start); 550 if (rle->count > 1) { 551 retval += printf("-"); 552 retval += printf(format, rle->start + 553 rle->count - 1); 554 } 555 } 556 } 557 return(retval); 558 } 559 560 static int 561 acpi_print_child(device_t bus, device_t child) 562 { 563 struct acpi_device *adev = device_get_ivars(child); 564 struct resource_list *rl = &adev->ad_rl; 565 int retval = 0; 566 567 retval += bus_print_child_header(bus, child); 568 retval += acpi_print_resources(rl, "port", SYS_RES_IOPORT, "%#lx"); 569 retval += acpi_print_resources(rl, "iomem", SYS_RES_MEMORY, "%#lx"); 570 retval += acpi_print_resources(rl, "irq", SYS_RES_IRQ, "%ld"); 571 retval += acpi_print_resources(rl, "drq", SYS_RES_DRQ, "%ld"); 572 retval += bus_print_child_footer(bus, child); 573 574 return(retval); 575 } 576 577 578 /* 579 * Handle per-device ivars 580 */ 581 static int 582 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) 583 { 584 struct acpi_device *ad; 585 586 if ((ad = device_get_ivars(child)) == NULL) { 587 printf("device has no ivars\n"); 588 return(ENOENT); 589 } 590 591 switch(index) { 592 /* ACPI ivars */ 593 case ACPI_IVAR_HANDLE: 594 *(ACPI_HANDLE *)result = ad->ad_handle; 595 break; 596 case ACPI_IVAR_MAGIC: 597 *(int *)result = ad->ad_magic; 598 break; 599 case ACPI_IVAR_PRIVATE: 600 *(void **)result = ad->ad_private; 601 break; 602 603 /* ISA compatibility */ 604 case ISA_IVAR_VENDORID: 605 case ISA_IVAR_SERIAL: 606 case ISA_IVAR_COMPATID: 607 *(int *)result = -1; 608 break; 609 610 case ISA_IVAR_LOGICALID: 611 *(int *)result = acpi_isa_get_logicalid(child); 612 break; 613 614 default: 615 panic("bad ivar read request (%d)\n", index); 616 return(ENOENT); 617 } 618 return(0); 619 } 620 621 static int 622 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value) 623 { 624 struct acpi_device *ad; 625 626 if ((ad = device_get_ivars(child)) == NULL) { 627 printf("device has no ivars\n"); 628 return(ENOENT); 629 } 630 631 switch(index) { 632 /* ACPI ivars */ 633 case ACPI_IVAR_HANDLE: 634 ad->ad_handle = (ACPI_HANDLE)value; 635 break; 636 case ACPI_IVAR_MAGIC: 637 ad->ad_magic = (int )value; 638 break; 639 case ACPI_IVAR_PRIVATE: 640 ad->ad_private = (void *)value; 641 break; 642 643 default: 644 panic("bad ivar write request (%d)\n", index); 645 return(ENOENT); 646 } 647 return(0); 648 } 649 650 /* 651 * Handle child resource allocation/removal 652 */ 653 static int 654 acpi_set_resource(device_t dev, device_t child, int type, int rid, u_long start, u_long count) 655 { 656 struct acpi_device *ad = device_get_ivars(child); 657 struct resource_list *rl = &ad->ad_rl; 658 659 resource_list_add(rl, type, rid, start, start + count -1, count); 660 661 return(0); 662 } 663 664 static int 665 acpi_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, u_long *countp) 666 { 667 struct acpi_device *ad = device_get_ivars(child); 668 struct resource_list *rl = &ad->ad_rl; 669 struct resource_list_entry *rle; 670 671 rle = resource_list_find(rl, type, rid); 672 if (!rle) 673 return(ENOENT); 674 675 if (startp) 676 *startp = rle->start; 677 if (countp) 678 *countp = rle->count; 679 680 return(0); 681 } 682 683 static struct resource * 684 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, 685 u_long start, u_long end, u_long count, u_int flags) 686 { 687 struct acpi_device *ad = device_get_ivars(child); 688 struct resource_list *rl = &ad->ad_rl; 689 690 return(resource_list_alloc(rl, bus, child, type, rid, start, end, count, flags)); 691 } 692 693 static int 694 acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r) 695 { 696 struct acpi_device *ad = device_get_ivars(child); 697 struct resource_list *rl = &ad->ad_rl; 698 699 return(resource_list_release(rl, bus, child, type, rid, r)); 700 } 701 702 /* 703 * Handle ISA-like devices probing for a PnP ID to match. 704 */ 705 #define PNP_EISAID(s) \ 706 ((((s[0] - '@') & 0x1f) << 2) \ 707 | (((s[1] - '@') & 0x18) >> 3) \ 708 | (((s[1] - '@') & 0x07) << 13) \ 709 | (((s[2] - '@') & 0x1f) << 8) \ 710 | (PNP_HEXTONUM(s[4]) << 16) \ 711 | (PNP_HEXTONUM(s[3]) << 20) \ 712 | (PNP_HEXTONUM(s[6]) << 24) \ 713 | (PNP_HEXTONUM(s[5]) << 28)) 714 715 static u_int32_t 716 acpi_isa_get_logicalid(device_t dev) 717 { 718 ACPI_HANDLE h; 719 ACPI_DEVICE_INFO devinfo; 720 ACPI_STATUS error; 721 u_int32_t pnpid; 722 723 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 724 725 pnpid = 0; 726 ACPI_LOCK; 727 728 /* fetch and validate the HID */ 729 if ((h = acpi_get_handle(dev)) == NULL) 730 goto out; 731 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 732 goto out; 733 if (!(devinfo.Valid & ACPI_VALID_HID)) 734 goto out; 735 736 pnpid = PNP_EISAID(devinfo.HardwareId); 737 out: 738 ACPI_UNLOCK; 739 return_VALUE(pnpid); 740 } 741 742 static int 743 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids) 744 { 745 int result; 746 u_int32_t pnpid; 747 748 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 749 750 /* 751 * ISA-style drivers attached to ACPI may persist and 752 * probe manually if we return ENOENT. We never want 753 * that to happen, so don't ever return it. 754 */ 755 result = ENXIO; 756 757 /* scan the supplied IDs for a match */ 758 pnpid = acpi_isa_get_logicalid(child); 759 while (ids && ids->ip_id) { 760 if (pnpid == ids->ip_id) { 761 result = 0; 762 goto out; 763 } 764 ids++; 765 } 766 out: 767 return_VALUE(result); 768 } 769 770 /* 771 * Scan relevant portions of the ACPI namespace and attach child devices. 772 * 773 * Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and \_SB_ scopes, 774 * and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec. 775 */ 776 static void 777 acpi_probe_children(device_t bus) 778 { 779 ACPI_HANDLE parent; 780 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL}; 781 int i; 782 783 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 784 ACPI_ASSERTLOCK; 785 786 /* 787 * Create any static children by calling device identify methods. 788 */ 789 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n")); 790 bus_generic_probe(bus); 791 792 /* 793 * Scan the namespace and insert placeholders for all the devices that 794 * we find. 795 * 796 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because 797 * we want to create nodes for all devices, not just those that are currently 798 * present. (This assumes that we don't want to create/remove devices as they 799 * appear, which might be smarter.) 800 */ 801 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n")); 802 for (i = 0; scopes[i] != NULL; i++) 803 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent))) 804 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, acpi_probe_child, bus, NULL); 805 806 /* 807 * Scan all of the child devices we have created and let them probe/attach. 808 */ 809 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n")); 810 bus_generic_attach(bus); 811 812 /* 813 * Some of these children may have attached others as part of their attach 814 * process (eg. the root PCI bus driver), so rescan. 815 */ 816 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n")); 817 bus_generic_attach(bus); 818 819 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n")); 820 return_VOID; 821 } 822 823 /* 824 * Evaluate a child device and determine whether we might attach a device to 825 * it. 826 */ 827 static ACPI_STATUS 828 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 829 { 830 ACPI_OBJECT_TYPE type; 831 device_t child, bus = (device_t)context; 832 833 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 834 835 /* 836 * Skip this device if we think we'll have trouble with it. 837 */ 838 if (acpi_avoid(handle)) 839 return_ACPI_STATUS(AE_OK); 840 841 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) { 842 switch(type) { 843 case ACPI_TYPE_DEVICE: 844 case ACPI_TYPE_PROCESSOR: 845 case ACPI_TYPE_THERMAL: 846 case ACPI_TYPE_POWER: 847 if (acpi_disabled("children")) 848 break; 849 /* 850 * Create a placeholder device for this node. Sort the placeholder 851 * so that the probe/attach passes will run breadth-first. 852 */ 853 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", acpi_name(handle))); 854 child = BUS_ADD_CHILD(bus, level * 10, NULL, -1); 855 if (child == NULL) 856 break; 857 acpi_set_handle(child, handle); 858 859 /* 860 * Check that the device is present. If it's not present, 861 * leave it disabled (so that we have a device_t attached to 862 * the handle, but we don't probe it). 863 */ 864 if ((type == ACPI_TYPE_DEVICE) && (!acpi_DeviceIsPresent(child))) { 865 device_disable(child); 866 break; 867 } 868 869 /* 870 * Get the device's resource settings and attach them. 871 * Note that if the device has _PRS but no _CRS, we need 872 * to decide when it's appropriate to try to configure the 873 * device. Ignore the return value here; it's OK for the 874 * device not to have any resources. 875 */ 876 acpi_parse_resources(child, handle, &acpi_res_parse_set); 877 878 /* if we're debugging, probe/attach now rather than later */ 879 ACPI_DEBUG_EXEC(device_probe_and_attach(child)); 880 break; 881 } 882 } 883 return_ACPI_STATUS(AE_OK); 884 } 885 886 static void 887 acpi_shutdown_pre_sync(void *arg, int howto) 888 { 889 890 ACPI_ASSERTLOCK; 891 892 /* 893 * Disable all ACPI events before soft off, otherwise the system 894 * will be turned on again on some laptops. 895 * 896 * XXX this should probably be restricted to masking some events just 897 * before powering down, since we may still need ACPI during the 898 * shutdown process. 899 */ 900 acpi_Disable((struct acpi_softc *)arg); 901 } 902 903 static void 904 acpi_shutdown_final(void *arg, int howto) 905 { 906 ACPI_STATUS status; 907 908 ACPI_ASSERTLOCK; 909 910 if (howto & RB_POWEROFF) { 911 printf("Power system off using ACPI...\n"); 912 if (ACPI_FAILURE(status = AcpiEnterSleepStatePrep(acpi_off_state))) { 913 printf("AcpiEnterSleepStatePrep failed - %s\n", 914 AcpiFormatException(status)); 915 return; 916 } 917 if (ACPI_FAILURE(status = AcpiEnterSleepState(acpi_off_state))) { 918 printf("ACPI power-off failed - %s\n", AcpiFormatException(status)); 919 } else { 920 DELAY(1000000); 921 printf("ACPI power-off failed - timeout\n"); 922 } 923 } else { 924 printf("Terminate ACPI\n"); 925 AcpiTerminate(); 926 } 927 } 928 929 static void 930 acpi_enable_fixed_events(struct acpi_softc *sc) 931 { 932 static int first_time = 1; 933 #define MSGFORMAT "%s button is handled as a fixed feature programming model.\n" 934 935 ACPI_ASSERTLOCK; 936 937 /* Enable and clear fixed events and install handlers. */ 938 if ((AcpiGbl_FADT != NULL) && (AcpiGbl_FADT->PwrButton == 0)) { 939 AcpiEnableEvent(ACPI_EVENT_POWER_BUTTON, ACPI_EVENT_FIXED, 0); 940 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON, ACPI_EVENT_FIXED); 941 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON, 942 acpi_eventhandler_power_button_for_sleep, sc); 943 if (first_time) { 944 device_printf(sc->acpi_dev, MSGFORMAT, "power"); 945 } 946 } 947 if ((AcpiGbl_FADT != NULL) && (AcpiGbl_FADT->SleepButton == 0)) { 948 AcpiEnableEvent(ACPI_EVENT_SLEEP_BUTTON, ACPI_EVENT_FIXED, 0); 949 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON, ACPI_EVENT_FIXED); 950 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON, 951 acpi_eventhandler_sleep_button_for_sleep, sc); 952 if (first_time) { 953 device_printf(sc->acpi_dev, MSGFORMAT, "sleep"); 954 } 955 } 956 957 first_time = 0; 958 } 959 960 /* 961 * Returns true if the device is actually present and should 962 * be attached to. This requires the present, enabled, UI-visible 963 * and diagnostics-passed bits to be set. 964 */ 965 BOOLEAN 966 acpi_DeviceIsPresent(device_t dev) 967 { 968 ACPI_HANDLE h; 969 ACPI_DEVICE_INFO devinfo; 970 ACPI_STATUS error; 971 972 ACPI_ASSERTLOCK; 973 974 if ((h = acpi_get_handle(dev)) == NULL) 975 return(FALSE); 976 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 977 return(FALSE); 978 /* if no _STA method, must be present */ 979 if (!(devinfo.Valid & ACPI_VALID_STA)) 980 return(TRUE); 981 /* return true for 'present' and 'functioning' */ 982 if ((devinfo.CurrentStatus & 0x9) == 0x9) 983 return(TRUE); 984 return(FALSE); 985 } 986 987 /* 988 * Returns true if the battery is actually present and inserted. 989 */ 990 BOOLEAN 991 acpi_BatteryIsPresent(device_t dev) 992 { 993 ACPI_HANDLE h; 994 ACPI_DEVICE_INFO devinfo; 995 ACPI_STATUS error; 996 997 ACPI_ASSERTLOCK; 998 999 if ((h = acpi_get_handle(dev)) == NULL) 1000 return(FALSE); 1001 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 1002 return(FALSE); 1003 /* if no _STA method, must be present */ 1004 if (!(devinfo.Valid & ACPI_VALID_STA)) 1005 return(TRUE); 1006 /* return true for 'present' and 'functioning' */ 1007 if ((devinfo.CurrentStatus & 0x19) == 0x19) 1008 return(TRUE); 1009 return(FALSE); 1010 } 1011 1012 /* 1013 * Match a HID string against a device 1014 */ 1015 BOOLEAN 1016 acpi_MatchHid(device_t dev, char *hid) 1017 { 1018 ACPI_HANDLE h; 1019 ACPI_DEVICE_INFO devinfo; 1020 ACPI_STATUS error; 1021 int cid; 1022 1023 ACPI_ASSERTLOCK; 1024 1025 if (hid == NULL) 1026 return(FALSE); 1027 if ((h = acpi_get_handle(dev)) == NULL) 1028 return(FALSE); 1029 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 1030 return(FALSE); 1031 if ((devinfo.Valid & ACPI_VALID_HID) && !strcmp(hid, devinfo.HardwareId)) 1032 return(TRUE); 1033 if (ACPI_FAILURE(error = acpi_EvaluateInteger(h, "_CID", &cid))) 1034 return(FALSE); 1035 if (cid == PNP_EISAID(hid)) 1036 return(TRUE); 1037 return(FALSE); 1038 } 1039 1040 /* 1041 * Return the handle of a named object within our scope, ie. that of (parent) 1042 * or one if its parents. 1043 */ 1044 ACPI_STATUS 1045 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result) 1046 { 1047 ACPI_HANDLE r; 1048 ACPI_STATUS status; 1049 1050 ACPI_ASSERTLOCK; 1051 1052 /* walk back up the tree to the root */ 1053 for (;;) { 1054 if (ACPI_SUCCESS(status = AcpiGetHandle(parent, path, &r))) { 1055 *result = r; 1056 return(AE_OK); 1057 } 1058 if (status != AE_NOT_FOUND) 1059 return(AE_OK); 1060 if (ACPI_FAILURE(AcpiGetParent(parent, &r))) 1061 return(AE_NOT_FOUND); 1062 parent = r; 1063 } 1064 } 1065 1066 /* 1067 * Allocate a buffer with a preset data size. 1068 */ 1069 ACPI_BUFFER * 1070 acpi_AllocBuffer(int size) 1071 { 1072 ACPI_BUFFER *buf; 1073 1074 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL) 1075 return(NULL); 1076 buf->Length = size; 1077 buf->Pointer = (void *)(buf + 1); 1078 return(buf); 1079 } 1080 1081 /* 1082 * Evaluate a path that should return an integer. 1083 */ 1084 ACPI_STATUS 1085 acpi_EvaluateInteger(ACPI_HANDLE handle, char *path, int *number) 1086 { 1087 ACPI_STATUS error; 1088 ACPI_BUFFER buf; 1089 ACPI_OBJECT param; 1090 1091 ACPI_ASSERTLOCK; 1092 1093 if (handle == NULL) 1094 handle = ACPI_ROOT_OBJECT; 1095 1096 /* 1097 * Assume that what we've been pointed at is an Integer object, or 1098 * a method that will return an Integer. 1099 */ 1100 buf.Pointer = ¶m; 1101 buf.Length = sizeof(param); 1102 if (ACPI_SUCCESS(error = AcpiEvaluateObject(handle, path, NULL, &buf))) { 1103 if (param.Type == ACPI_TYPE_INTEGER) { 1104 *number = param.Integer.Value; 1105 } else { 1106 error = AE_TYPE; 1107 } 1108 } 1109 1110 /* 1111 * In some applications, a method that's expected to return an Integer 1112 * may instead return a Buffer (probably to simplify some internal 1113 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer, 1114 * convert it into an Integer as best we can. 1115 * 1116 * This is a hack. 1117 */ 1118 if (error == AE_BUFFER_OVERFLOW) { 1119 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) { 1120 error = AE_NO_MEMORY; 1121 } else { 1122 if (ACPI_SUCCESS(error = AcpiEvaluateObject(handle, path, NULL, &buf))) { 1123 error = acpi_ConvertBufferToInteger(&buf, number); 1124 } 1125 } 1126 AcpiOsFree(buf.Pointer); 1127 } 1128 return(error); 1129 } 1130 1131 ACPI_STATUS 1132 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, int *number) 1133 { 1134 ACPI_OBJECT *p; 1135 int i; 1136 1137 p = (ACPI_OBJECT *)bufp->Pointer; 1138 if (p->Type == ACPI_TYPE_INTEGER) { 1139 *number = p->Integer.Value; 1140 return(AE_OK); 1141 } 1142 if (p->Type != ACPI_TYPE_BUFFER) 1143 return(AE_TYPE); 1144 if (p->Buffer.Length > sizeof(int)) 1145 return(AE_BAD_DATA); 1146 *number = 0; 1147 for (i = 0; i < p->Buffer.Length; i++) 1148 *number += (*(p->Buffer.Pointer + i) << (i * 8)); 1149 return(AE_OK); 1150 } 1151 1152 /* 1153 * Iterate over the elements of an a package object, calling the supplied 1154 * function for each element. 1155 * 1156 * XXX possible enhancement might be to abort traversal on error. 1157 */ 1158 ACPI_STATUS 1159 acpi_ForeachPackageObject(ACPI_OBJECT *pkg, void (* func)(ACPI_OBJECT *comp, void *arg), void *arg) 1160 { 1161 ACPI_OBJECT *comp; 1162 int i; 1163 1164 if ((pkg == NULL) || (pkg->Type != ACPI_TYPE_PACKAGE)) 1165 return(AE_BAD_PARAMETER); 1166 1167 /* iterate over components */ 1168 for (i = 0, comp = pkg->Package.Elements; i < pkg->Package.Count; i++, comp++) 1169 func(comp, arg); 1170 1171 return(AE_OK); 1172 } 1173 1174 /* 1175 * Find the (index)th resource object in a set. 1176 */ 1177 ACPI_STATUS 1178 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp) 1179 { 1180 ACPI_RESOURCE *rp; 1181 int i; 1182 1183 rp = (ACPI_RESOURCE *)buf->Pointer; 1184 i = index; 1185 while (i-- > 0) { 1186 /* range check */ 1187 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 1188 return(AE_BAD_PARAMETER); 1189 /* check for terminator */ 1190 if ((rp->Id == ACPI_RSTYPE_END_TAG) || 1191 (rp->Length == 0)) 1192 return(AE_NOT_FOUND); 1193 rp = ACPI_RESOURCE_NEXT(rp); 1194 } 1195 if (resp != NULL) 1196 *resp = rp; 1197 return(AE_OK); 1198 } 1199 1200 /* 1201 * Append an ACPI_RESOURCE to an ACPI_BUFFER. 1202 * 1203 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER 1204 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible 1205 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of 1206 * resources. 1207 */ 1208 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512 1209 1210 ACPI_STATUS 1211 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res) 1212 { 1213 ACPI_RESOURCE *rp; 1214 void *newp; 1215 1216 /* 1217 * Initialise the buffer if necessary. 1218 */ 1219 if (buf->Pointer == NULL) { 1220 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE; 1221 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL) 1222 return(AE_NO_MEMORY); 1223 rp = (ACPI_RESOURCE *)buf->Pointer; 1224 rp->Id = ACPI_RSTYPE_END_TAG; 1225 rp->Length = 0; 1226 } 1227 if (res == NULL) 1228 return(AE_OK); 1229 1230 /* 1231 * Scan the current buffer looking for the terminator. 1232 * This will either find the terminator or hit the end 1233 * of the buffer and return an error. 1234 */ 1235 rp = (ACPI_RESOURCE *)buf->Pointer; 1236 for (;;) { 1237 /* range check, don't go outside the buffer */ 1238 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 1239 return(AE_BAD_PARAMETER); 1240 if ((rp->Id == ACPI_RSTYPE_END_TAG) || 1241 (rp->Length == 0)) { 1242 break; 1243 } 1244 rp = ACPI_RESOURCE_NEXT(rp); 1245 } 1246 1247 /* 1248 * Check the size of the buffer and expand if required. 1249 * 1250 * Required size is: 1251 * size of existing resources before terminator + 1252 * size of new resource and header + 1253 * size of terminator. 1254 * 1255 * Note that this loop should really only run once, unless 1256 * for some reason we are stuffing a *really* huge resource. 1257 */ 1258 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) + 1259 res->Length + ACPI_RESOURCE_LENGTH_NO_DATA + 1260 ACPI_RESOURCE_LENGTH) >= buf->Length) { 1261 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL) 1262 return(AE_NO_MEMORY); 1263 bcopy(buf->Pointer, newp, buf->Length); 1264 rp = (ACPI_RESOURCE *)((u_int8_t *)newp + 1265 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer)); 1266 AcpiOsFree(buf->Pointer); 1267 buf->Pointer = newp; 1268 buf->Length += buf->Length; 1269 } 1270 1271 /* 1272 * Insert the new resource. 1273 */ 1274 bcopy(res, rp, res->Length + ACPI_RESOURCE_LENGTH_NO_DATA); 1275 1276 /* 1277 * And add the terminator. 1278 */ 1279 rp = ACPI_RESOURCE_NEXT(rp); 1280 rp->Id = ACPI_RSTYPE_END_TAG; 1281 rp->Length = 0; 1282 1283 return(AE_OK); 1284 } 1285 1286 #define ACPI_MINIMUM_AWAKETIME 5 1287 1288 static void 1289 acpi_sleep_enable(void *arg) 1290 { 1291 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0; 1292 } 1293 1294 /* 1295 * Set the system sleep state 1296 * 1297 * Currently we only support S1 and S5 1298 */ 1299 ACPI_STATUS 1300 acpi_SetSleepState(struct acpi_softc *sc, int state) 1301 { 1302 ACPI_STATUS status = AE_OK; 1303 UINT8 TypeA; 1304 UINT8 TypeB; 1305 1306 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 1307 ACPI_ASSERTLOCK; 1308 1309 if (sc->acpi_sstate != ACPI_STATE_S0) 1310 return_ACPI_STATUS(AE_BAD_PARAMETER); /* avoid reentry */ 1311 1312 if (sc->acpi_sleep_disabled) 1313 return_ACPI_STATUS(AE_OK); 1314 1315 switch (state) { 1316 case ACPI_STATE_S0: /* XXX only for testing */ 1317 if (ACPI_FAILURE(status = AcpiEnterSleepState((UINT8)state))) { 1318 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status)); 1319 } 1320 break; 1321 1322 case ACPI_STATE_S1: 1323 case ACPI_STATE_S2: 1324 case ACPI_STATE_S3: 1325 case ACPI_STATE_S4: 1326 if (ACPI_FAILURE(status = AcpiGetSleepTypeData((UINT8)state, &TypeA, &TypeB))) { 1327 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n", AcpiFormatException(status)); 1328 break; 1329 } 1330 1331 /* 1332 * Inform all devices that we are going to sleep. 1333 */ 1334 if (DEVICE_SUSPEND(root_bus) != 0) { 1335 /* 1336 * Re-wake the system. 1337 * 1338 * XXX note that a better two-pass approach with a 'veto' pass 1339 * followed by a "real thing" pass would be better, but the 1340 * current bus interface does not provide for this. 1341 */ 1342 DEVICE_RESUME(root_bus); 1343 return_ACPI_STATUS(AE_ERROR); 1344 } 1345 1346 if (ACPI_FAILURE(status = AcpiEnterSleepStatePrep(state))) { 1347 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 1348 AcpiFormatException(status)); 1349 break; 1350 } 1351 1352 sc->acpi_sstate = state; 1353 sc->acpi_sleep_disabled = 1; 1354 1355 if (state != ACPI_STATE_S1) { 1356 acpi_sleep_machdep(sc, state); 1357 1358 /* AcpiEnterSleepState() maybe incompleted, unlock here. */ 1359 AcpiUtReleaseMutex(ACPI_MTX_HARDWARE); 1360 1361 /* Re-enable ACPI hardware on wakeup from sleep state 4. */ 1362 if (state == ACPI_STATE_S4) { 1363 AcpiEnable(); 1364 } 1365 } else { 1366 if (ACPI_FAILURE(status = AcpiEnterSleepState((UINT8)state))) { 1367 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status)); 1368 break; 1369 } 1370 } 1371 AcpiLeaveSleepState((UINT8)state); 1372 DEVICE_RESUME(root_bus); 1373 sc->acpi_sstate = ACPI_STATE_S0; 1374 acpi_enable_fixed_events(sc); 1375 break; 1376 1377 case ACPI_STATE_S5: 1378 /* 1379 * Shut down cleanly and power off. This will call us back through the 1380 * shutdown handlers. 1381 */ 1382 shutdown_nice(RB_POWEROFF); 1383 break; 1384 1385 default: 1386 status = AE_BAD_PARAMETER; 1387 break; 1388 } 1389 1390 if (sc->acpi_sleep_disabled) 1391 timeout(acpi_sleep_enable, (caddr_t)sc, hz * ACPI_MINIMUM_AWAKETIME); 1392 1393 return_ACPI_STATUS(status); 1394 } 1395 1396 /* 1397 * Enable/Disable ACPI 1398 */ 1399 ACPI_STATUS 1400 acpi_Enable(struct acpi_softc *sc) 1401 { 1402 ACPI_STATUS status; 1403 u_int32_t flags; 1404 1405 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1406 ACPI_ASSERTLOCK; 1407 1408 flags = ACPI_NO_ADDRESS_SPACE_INIT | ACPI_NO_HARDWARE_INIT | 1409 ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; 1410 if (!sc->acpi_enabled) { 1411 status = AcpiEnableSubsystem(flags); 1412 } else { 1413 status = AE_OK; 1414 } 1415 if (status == AE_OK) 1416 sc->acpi_enabled = 1; 1417 return_ACPI_STATUS(status); 1418 } 1419 1420 ACPI_STATUS 1421 acpi_Disable(struct acpi_softc *sc) 1422 { 1423 ACPI_STATUS status; 1424 1425 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1426 ACPI_ASSERTLOCK; 1427 1428 if (sc->acpi_enabled) { 1429 status = AcpiDisable(); 1430 } else { 1431 status = AE_OK; 1432 } 1433 if (status == AE_OK) 1434 sc->acpi_enabled = 0; 1435 return_ACPI_STATUS(status); 1436 } 1437 1438 /* 1439 * ACPI Event Handlers 1440 */ 1441 1442 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */ 1443 1444 static void 1445 acpi_system_eventhandler_sleep(void *arg, int state) 1446 { 1447 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 1448 1449 ACPI_LOCK; 1450 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) 1451 acpi_SetSleepState((struct acpi_softc *)arg, state); 1452 ACPI_UNLOCK; 1453 return_VOID; 1454 } 1455 1456 static void 1457 acpi_system_eventhandler_wakeup(void *arg, int state) 1458 { 1459 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 1460 1461 /* Well, what to do? :-) */ 1462 1463 ACPI_LOCK; 1464 ACPI_UNLOCK; 1465 1466 return_VOID; 1467 } 1468 1469 /* 1470 * ACPICA Event Handlers (FixedEvent, also called from button notify handler) 1471 */ 1472 UINT32 1473 acpi_eventhandler_power_button_for_sleep(void *context) 1474 { 1475 struct acpi_softc *sc = (struct acpi_softc *)context; 1476 1477 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1478 1479 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx); 1480 1481 return_VALUE(ACPI_INTERRUPT_HANDLED); 1482 } 1483 1484 UINT32 1485 acpi_eventhandler_power_button_for_wakeup(void *context) 1486 { 1487 struct acpi_softc *sc = (struct acpi_softc *)context; 1488 1489 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1490 1491 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx); 1492 1493 return_VALUE(ACPI_INTERRUPT_HANDLED); 1494 } 1495 1496 UINT32 1497 acpi_eventhandler_sleep_button_for_sleep(void *context) 1498 { 1499 struct acpi_softc *sc = (struct acpi_softc *)context; 1500 1501 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1502 1503 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx); 1504 1505 return_VALUE(ACPI_INTERRUPT_HANDLED); 1506 } 1507 1508 UINT32 1509 acpi_eventhandler_sleep_button_for_wakeup(void *context) 1510 { 1511 struct acpi_softc *sc = (struct acpi_softc *)context; 1512 1513 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1514 1515 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx); 1516 1517 return_VALUE(ACPI_INTERRUPT_HANDLED); 1518 } 1519 1520 /* 1521 * XXX This is kinda ugly, and should not be here. 1522 */ 1523 struct acpi_staticbuf { 1524 ACPI_BUFFER buffer; 1525 char data[512]; 1526 }; 1527 1528 char * 1529 acpi_name(ACPI_HANDLE handle) 1530 { 1531 static struct acpi_staticbuf buf; 1532 1533 ACPI_ASSERTLOCK; 1534 1535 buf.buffer.Length = 512; 1536 buf.buffer.Pointer = &buf.data[0]; 1537 1538 if (ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer))) 1539 return(buf.buffer.Pointer); 1540 return("(unknown path)"); 1541 } 1542 1543 /* 1544 * Debugging/bug-avoidance. Avoid trying to fetch info on various 1545 * parts of the namespace. 1546 */ 1547 int 1548 acpi_avoid(ACPI_HANDLE handle) 1549 { 1550 char *cp, *env, *np; 1551 int len; 1552 1553 np = acpi_name(handle); 1554 if (*np == '\\') 1555 np++; 1556 if ((env = getenv("debug.acpi.avoid")) == NULL) 1557 return(0); 1558 1559 /* scan the avoid list checking for a match */ 1560 cp = env; 1561 for (;;) { 1562 while ((*cp != 0) && isspace(*cp)) 1563 cp++; 1564 if (*cp == 0) 1565 break; 1566 len = 0; 1567 while ((cp[len] != 0) && !isspace(cp[len])) 1568 len++; 1569 if (!strncmp(cp, np, len)) { 1570 freeenv(env); 1571 return(1); 1572 } 1573 cp += len; 1574 } 1575 freeenv(env); 1576 return(0); 1577 } 1578 1579 /* 1580 * Debugging/bug-avoidance. Disable ACPI subsystem components. 1581 */ 1582 int 1583 acpi_disabled(char *subsys) 1584 { 1585 char *cp, *env; 1586 int len; 1587 1588 if ((env = getenv("debug.acpi.disable")) == NULL) 1589 return(0); 1590 if (!strcmp(env, "all")) { 1591 freeenv(env); 1592 return(1); 1593 } 1594 1595 /* scan the disable list checking for a match */ 1596 cp = env; 1597 for (;;) { 1598 while ((*cp != 0) && isspace(*cp)) 1599 cp++; 1600 if (*cp == 0) 1601 break; 1602 len = 0; 1603 while ((cp[len] != 0) && !isspace(cp[len])) 1604 len++; 1605 if (!strncmp(cp, subsys, len)) { 1606 freeenv(env); 1607 return(1); 1608 } 1609 cp += len; 1610 } 1611 freeenv(env); 1612 return(0); 1613 } 1614 1615 /* 1616 * Control interface. 1617 * 1618 * We multiplex ioctls for all participating ACPI devices here. Individual 1619 * drivers wanting to be accessible via /dev/acpi should use the register/deregister 1620 * interface to make their handlers visible. 1621 */ 1622 struct acpi_ioctl_hook 1623 { 1624 TAILQ_ENTRY(acpi_ioctl_hook) link; 1625 u_long cmd; 1626 int (* fn)(u_long cmd, caddr_t addr, void *arg); 1627 void *arg; 1628 }; 1629 1630 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks; 1631 static int acpi_ioctl_hooks_initted; 1632 1633 /* 1634 * Register an ioctl handler. 1635 */ 1636 int 1637 acpi_register_ioctl(u_long cmd, int (* fn)(u_long cmd, caddr_t addr, void *arg), void *arg) 1638 { 1639 struct acpi_ioctl_hook *hp; 1640 1641 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL) 1642 return(ENOMEM); 1643 hp->cmd = cmd; 1644 hp->fn = fn; 1645 hp->arg = arg; 1646 if (acpi_ioctl_hooks_initted == 0) { 1647 TAILQ_INIT(&acpi_ioctl_hooks); 1648 acpi_ioctl_hooks_initted = 1; 1649 } 1650 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link); 1651 return(0); 1652 } 1653 1654 /* 1655 * Deregister an ioctl handler. 1656 */ 1657 void 1658 acpi_deregister_ioctl(u_long cmd, int (* fn)(u_long cmd, caddr_t addr, void *arg)) 1659 { 1660 struct acpi_ioctl_hook *hp; 1661 1662 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) 1663 if ((hp->cmd == cmd) && (hp->fn == fn)) 1664 break; 1665 1666 if (hp != NULL) { 1667 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link); 1668 free(hp, M_ACPIDEV); 1669 } 1670 } 1671 1672 static int 1673 acpiopen(dev_t dev, int flag, int fmt, struct thread *td) 1674 { 1675 return(0); 1676 } 1677 1678 static int 1679 acpiclose(dev_t dev, int flag, int fmt, struct thread *td) 1680 { 1681 return(0); 1682 } 1683 1684 static int 1685 acpiioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 1686 { 1687 struct acpi_softc *sc; 1688 struct acpi_ioctl_hook *hp; 1689 int error, xerror, state; 1690 1691 ACPI_LOCK; 1692 1693 error = state = 0; 1694 sc = dev->si_drv1; 1695 1696 /* 1697 * Scan the list of registered ioctls, looking for handlers. 1698 */ 1699 if (acpi_ioctl_hooks_initted) { 1700 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) { 1701 if (hp->cmd == cmd) { 1702 xerror = hp->fn(cmd, addr, hp->arg); 1703 if (xerror != 0) 1704 error = xerror; 1705 goto out; 1706 } 1707 } 1708 } 1709 1710 /* 1711 * Core system ioctls. 1712 */ 1713 switch (cmd) { 1714 case ACPIIO_ENABLE: 1715 if (ACPI_FAILURE(acpi_Enable(sc))) 1716 error = ENXIO; 1717 break; 1718 1719 case ACPIIO_DISABLE: 1720 if (ACPI_FAILURE(acpi_Disable(sc))) 1721 error = ENXIO; 1722 break; 1723 1724 case ACPIIO_SETSLPSTATE: 1725 if (!sc->acpi_enabled) { 1726 error = ENXIO; 1727 break; 1728 } 1729 state = *(int *)addr; 1730 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) { 1731 acpi_SetSleepState(sc, state); 1732 } else { 1733 error = EINVAL; 1734 } 1735 break; 1736 1737 default: 1738 if (error == 0) 1739 error = EINVAL; 1740 break; 1741 } 1742 1743 out: 1744 ACPI_UNLOCK; 1745 return(error); 1746 } 1747 1748 static int 1749 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 1750 { 1751 char sleep_state[10]; 1752 int error; 1753 u_int new_state, old_state; 1754 1755 old_state = *(u_int *)oidp->oid_arg1; 1756 if (old_state > ACPI_S_STATES_MAX+1) { 1757 strcpy(sleep_state, "unknown"); 1758 } else { 1759 bzero(sleep_state, sizeof(sleep_state)); 1760 strncpy(sleep_state, sleep_state_names[old_state], 1761 sizeof(sleep_state_names[old_state])); 1762 } 1763 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req); 1764 if (error == 0 && req->newptr != NULL) { 1765 for (new_state = ACPI_STATE_S0; new_state <= ACPI_S_STATES_MAX+1; new_state++) { 1766 if (strncmp(sleep_state, sleep_state_names[new_state], 1767 sizeof(sleep_state)) == 0) 1768 break; 1769 } 1770 if (new_state <= ACPI_S_STATES_MAX+1) { 1771 if (new_state != old_state) { 1772 *(u_int *)oidp->oid_arg1 = new_state; 1773 } 1774 } else { 1775 error = EINVAL; 1776 } 1777 } 1778 return(error); 1779 } 1780 1781 #ifdef ACPI_DEBUG 1782 /* 1783 * Support for parsing debug options from the kernel environment. 1784 * 1785 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers 1786 * by specifying the names of the bits in the debug.acpi.layer and 1787 * debug.acpi.level environment variables. Bits may be unset by 1788 * prefixing the bit name with !. 1789 */ 1790 struct debugtag 1791 { 1792 char *name; 1793 UINT32 value; 1794 }; 1795 1796 static struct debugtag dbg_layer[] = { 1797 {"ACPI_UTILITIES", ACPI_UTILITIES}, 1798 {"ACPI_HARDWARE", ACPI_HARDWARE}, 1799 {"ACPI_EVENTS", ACPI_EVENTS}, 1800 {"ACPI_TABLES", ACPI_TABLES}, 1801 {"ACPI_NAMESPACE", ACPI_NAMESPACE}, 1802 {"ACPI_PARSER", ACPI_PARSER}, 1803 {"ACPI_DISPATCHER", ACPI_DISPATCHER}, 1804 {"ACPI_EXECUTER", ACPI_EXECUTER}, 1805 {"ACPI_RESOURCES", ACPI_RESOURCES}, 1806 {"ACPI_DEBUGGER", ACPI_DEBUGGER}, 1807 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES}, 1808 1809 {"ACPI_BUS", ACPI_BUS}, 1810 {"ACPI_SYSTEM", ACPI_SYSTEM}, 1811 {"ACPI_POWER", ACPI_POWER}, 1812 {"ACPI_EC", ACPI_EC}, 1813 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER}, 1814 {"ACPI_BATTERY", ACPI_BATTERY}, 1815 {"ACPI_BUTTON", ACPI_BUTTON}, 1816 {"ACPI_PROCESSOR", ACPI_PROCESSOR}, 1817 {"ACPI_THERMAL", ACPI_THERMAL}, 1818 {"ACPI_FAN", ACPI_FAN}, 1819 1820 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS}, 1821 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS}, 1822 {NULL, 0} 1823 }; 1824 1825 static struct debugtag dbg_level[] = { 1826 {"ACPI_LV_OK", ACPI_LV_OK}, 1827 {"ACPI_LV_INFO", ACPI_LV_INFO}, 1828 {"ACPI_LV_WARN", ACPI_LV_WARN}, 1829 {"ACPI_LV_ERROR", ACPI_LV_ERROR}, 1830 {"ACPI_LV_FATAL", ACPI_LV_FATAL}, 1831 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT}, 1832 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS}, 1833 {"ACPI_LV_THREADS", ACPI_LV_THREADS}, 1834 {"ACPI_LV_PARSE", ACPI_LV_PARSE}, 1835 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH}, 1836 {"ACPI_LV_LOAD", ACPI_LV_LOAD}, 1837 {"ACPI_LV_EXEC", ACPI_LV_EXEC}, 1838 {"ACPI_LV_NAMES", ACPI_LV_NAMES}, 1839 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION}, 1840 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD}, 1841 {"ACPI_LV_TABLES", ACPI_LV_TABLES}, 1842 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS}, 1843 {"ACPI_LV_VALUES", ACPI_LV_VALUES}, 1844 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS}, 1845 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS}, 1846 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES}, 1847 {"ACPI_LV_IO", ACPI_LV_IO}, 1848 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS}, 1849 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS}, 1850 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE}, 1851 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX}, 1852 {"ACPI_LV_INIT", ACPI_LV_INIT}, 1853 {"ACPI_LV_ALL", ACPI_LV_ALL}, 1854 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE}, 1855 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO}, 1856 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES}, 1857 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS}, 1858 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE}, 1859 {NULL, 0} 1860 }; 1861 1862 static void 1863 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag) 1864 { 1865 char *ep; 1866 int i, l; 1867 int set; 1868 1869 while (*cp) { 1870 if (isspace(*cp)) { 1871 cp++; 1872 continue; 1873 } 1874 ep = cp; 1875 while (*ep && !isspace(*ep)) 1876 ep++; 1877 if (*cp == '!') { 1878 set = 0; 1879 cp++; 1880 if (cp == ep) 1881 continue; 1882 } else { 1883 set = 1; 1884 } 1885 l = ep - cp; 1886 for (i = 0; tag[i].name != NULL; i++) { 1887 if (!strncmp(cp, tag[i].name, l)) { 1888 if (set) { 1889 *flag |= tag[i].value; 1890 } else { 1891 *flag &= ~tag[i].value; 1892 } 1893 printf("ACPI_DEBUG: set '%s'\n", tag[i].name); 1894 } 1895 } 1896 cp = ep; 1897 } 1898 } 1899 1900 static void 1901 acpi_set_debugging(void *junk) 1902 { 1903 char *cp; 1904 1905 AcpiDbgLayer = 0; 1906 AcpiDbgLevel = 0; 1907 if ((cp = getenv("debug.acpi.layer")) != NULL) { 1908 acpi_parse_debug(cp, &dbg_layer[0], &AcpiDbgLayer); 1909 freeenv(cp); 1910 } 1911 if ((cp = getenv("debug.acpi.level")) != NULL) { 1912 acpi_parse_debug(cp, &dbg_level[0], &AcpiDbgLevel); 1913 freeenv(cp); 1914 } 1915 1916 printf("ACPI debug layer 0x%x debug level 0x%x\n", AcpiDbgLayer, AcpiDbgLevel); 1917 } 1918 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging, NULL); 1919 #endif 1920 1921 static int 1922 acpi_pm_func(u_long cmd, void *arg, ...) 1923 { 1924 int state, acpi_state; 1925 int error; 1926 struct acpi_softc *sc; 1927 va_list ap; 1928 1929 error = 0; 1930 switch (cmd) { 1931 case POWER_CMD_SUSPEND: 1932 sc = (struct acpi_softc *)arg; 1933 if (sc == NULL) { 1934 error = EINVAL; 1935 goto out; 1936 } 1937 1938 va_start(ap, arg); 1939 state = va_arg(ap, int); 1940 va_end(ap); 1941 1942 switch (state) { 1943 case POWER_SLEEP_STATE_STANDBY: 1944 acpi_state = sc->acpi_standby_sx; 1945 break; 1946 case POWER_SLEEP_STATE_SUSPEND: 1947 acpi_state = sc->acpi_suspend_sx; 1948 break; 1949 case POWER_SLEEP_STATE_HIBERNATE: 1950 acpi_state = ACPI_STATE_S4; 1951 break; 1952 default: 1953 error = EINVAL; 1954 goto out; 1955 } 1956 1957 acpi_SetSleepState(sc, acpi_state); 1958 break; 1959 1960 default: 1961 error = EINVAL; 1962 goto out; 1963 } 1964 1965 out: 1966 return (error); 1967 } 1968 1969 static void 1970 acpi_pm_register(void *arg) 1971 { 1972 1973 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL); 1974 } 1975 1976 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0); 1977 1978