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 caddr_t acpi_dsdt, p; 212 #ifdef ENABLE_DEBUGGER 213 char *debugpoint; 214 #endif 215 216 ACPI_FUNCTION_TRACE(__func__); 217 218 if(!cold){ 219 printf("Don't load this driver from userland!!\n"); 220 return ; 221 } 222 223 /* 224 * Check that we haven't been disabled with a hint. 225 */ 226 if (!resource_int_value("acpi", 0, "disabled", &error) && 227 (error != 0)) 228 return_VOID; 229 230 /* 231 * Make sure we're not being doubly invoked. 232 */ 233 if (device_find_child(parent, "acpi", 0) != NULL) 234 return_VOID; 235 236 /* initialise the ACPI mutex */ 237 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF); 238 239 /* 240 * Start up the ACPI CA subsystem. 241 */ 242 #ifdef ENABLE_DEBUGGER 243 debugpoint = getenv("debug.acpi.debugger"); 244 if (debugpoint) { 245 if (!strcmp(debugpoint, "init")) 246 acpi_EnterDebugger(); 247 freeenv(debugpoint); 248 } 249 #endif 250 if (ACPI_FAILURE(error = AcpiInitializeSubsystem())) { 251 printf("ACPI: initialisation failed: %s\n", AcpiFormatException(error)); 252 return_VOID; 253 } 254 #ifdef ENABLE_DEBUGGER 255 debugpoint = getenv("debug.acpi.debugger"); 256 if (debugpoint) { 257 if (!strcmp(debugpoint, "tables")) 258 acpi_EnterDebugger(); 259 freeenv(debugpoint); 260 } 261 #endif 262 263 if ((acpi_dsdt = preload_search_by_type("acpi_dsdt")) != NULL) { 264 if ((p = preload_search_info(acpi_dsdt, MODINFO_ADDR)) != NULL) { 265 if (ACPI_FAILURE(error = AcpiSetDsdtTablePtr(*(void **)p))) { 266 printf("ACPI: DSDT overriding failed: %s\n", 267 AcpiFormatException(error)); 268 } else { 269 printf("ACPI: DSDT was overridden.\n"); 270 } 271 } 272 } 273 274 if (ACPI_FAILURE(error = AcpiLoadTables())) { 275 printf("ACPI: table load failed: %s\n", AcpiFormatException(error)); 276 return_VOID; 277 } 278 279 /* 280 * Attach the actual ACPI device. 281 */ 282 if ((child = BUS_ADD_CHILD(parent, 0, "acpi", 0)) == NULL) { 283 device_printf(parent, "ACPI: could not attach\n"); 284 return_VOID; 285 } 286 } 287 288 /* 289 * Fetch some descriptive data from ACPI to put in our attach message 290 */ 291 static int 292 acpi_probe(device_t dev) 293 { 294 ACPI_TABLE_HEADER th; 295 char buf[20]; 296 ACPI_STATUS status; 297 int error; 298 299 ACPI_FUNCTION_TRACE(__func__); 300 301 if (power_pm_get_type() != POWER_PM_TYPE_NONE && 302 power_pm_get_type() != POWER_PM_TYPE_ACPI) { 303 device_printf(dev, "Other PM system enabled.\n"); 304 return_VALUE(ENXIO); 305 } 306 307 ACPI_LOCK; 308 309 if (ACPI_FAILURE(status = AcpiGetTableHeader(ACPI_TABLE_XSDT, 1, &th))) { 310 device_printf(dev, "couldn't get XSDT header: %s\n", AcpiFormatException(status)); 311 error = ENXIO; 312 } else { 313 sprintf(buf, "%.6s %.8s", th.OemId, th.OemTableId); 314 device_set_desc_copy(dev, buf); 315 error = 0; 316 } 317 ACPI_UNLOCK; 318 return_VALUE(error); 319 } 320 321 static int 322 acpi_attach(device_t dev) 323 { 324 struct acpi_softc *sc; 325 ACPI_STATUS status; 326 int error; 327 UINT32 flags; 328 329 #ifdef ENABLE_DEBUGGER 330 char *debugpoint; 331 #endif 332 333 ACPI_FUNCTION_TRACE(__func__); 334 ACPI_LOCK; 335 sc = device_get_softc(dev); 336 bzero(sc, sizeof(*sc)); 337 sc->acpi_dev = dev; 338 339 #ifdef ENABLE_DEBUGGER 340 debugpoint = getenv("debug.acpi.debugger"); 341 if (debugpoint) { 342 if (!strcmp(debugpoint, "spaces")) 343 acpi_EnterDebugger(); 344 freeenv(debugpoint); 345 } 346 #endif 347 348 /* 349 * Install the default address space handlers. 350 */ 351 error = ENXIO; 352 if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 353 ACPI_ADR_SPACE_SYSTEM_MEMORY, 354 ACPI_DEFAULT_HANDLER, 355 NULL, NULL))) { 356 device_printf(dev, "could not initialise SystemMemory handler: %s\n", AcpiFormatException(status)); 357 goto out; 358 } 359 if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 360 ACPI_ADR_SPACE_SYSTEM_IO, 361 ACPI_DEFAULT_HANDLER, 362 NULL, NULL))) { 363 device_printf(dev, "could not initialise SystemIO handler: %s\n", AcpiFormatException(status)); 364 goto out; 365 } 366 if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 367 ACPI_ADR_SPACE_PCI_CONFIG, 368 ACPI_DEFAULT_HANDLER, 369 NULL, NULL))) { 370 device_printf(dev, "could not initialise PciConfig handler: %s\n", AcpiFormatException(status)); 371 goto out; 372 } 373 374 /* 375 * Bring ACPI fully online. 376 * 377 * Note that some systems (specifically, those with namespace evaluation issues 378 * that require the avoidance of parts of the namespace) must avoid running _INI 379 * and _STA on everything, as well as dodging the final object init pass. 380 * 381 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT). 382 * 383 * XXX We should arrange for the object init pass after we have attached all our 384 * child devices, but on many systems it works here. 385 */ 386 #ifdef ENABLE_DEBUGGER 387 debugpoint = getenv("debug.acpi.debugger"); 388 if (debugpoint) { 389 if (!strcmp(debugpoint, "enable")) 390 acpi_EnterDebugger(); 391 freeenv(debugpoint); 392 } 393 #endif 394 flags = 0; 395 if (testenv("debug.acpi.avoid")) 396 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; 397 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) { 398 device_printf(dev, "could not enable ACPI: %s\n", AcpiFormatException(status)); 399 goto out; 400 } 401 402 /* 403 * Setup our sysctl tree. 404 * 405 * XXX: This doesn't check to make sure that none of these fail. 406 */ 407 sysctl_ctx_init(&sc->acpi_sysctl_ctx); 408 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx, 409 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, 410 device_get_name(dev), CTLFLAG_RD, 0, ""); 411 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 412 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW, 413 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); 414 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 415 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW, 416 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); 417 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 418 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW, 419 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", ""); 420 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 421 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW, 422 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", ""); 423 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 424 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW, 425 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", ""); 426 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 427 OID_AUTO, "s4bios", CTLFLAG_RD | CTLFLAG_RW, 428 &sc->acpi_s4bios, 0, "S4BIOS mode"); 429 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 430 OID_AUTO, "verbose", CTLFLAG_RD | CTLFLAG_RW, 431 &sc->acpi_verbose, 0, "verbose mode"); 432 sc->acpi_s4bios = 1; 433 if (bootverbose) 434 sc->acpi_verbose = 1; 435 436 /* 437 * Dispatch the default sleep state to devices. 438 * TBD: should be configured from userland policy manager. 439 */ 440 sc->acpi_power_button_sx = ACPI_POWER_BUTTON_DEFAULT_SX; 441 sc->acpi_sleep_button_sx = ACPI_SLEEP_BUTTON_DEFAULT_SX; 442 sc->acpi_lid_switch_sx = ACPI_LID_SWITCH_DEFAULT_SX; 443 sc->acpi_standby_sx = ACPI_STATE_S1; 444 sc->acpi_suspend_sx = ACPI_STATE_S3; 445 446 acpi_enable_fixed_events(sc); 447 448 /* 449 * Scan the namespace and attach/initialise children. 450 */ 451 #ifdef ENABLE_DEBUGGER 452 debugpoint = getenv("debug.acpi.debugger"); 453 if (debugpoint) { 454 if (!strcmp(debugpoint, "probe")) 455 acpi_EnterDebugger(); 456 freeenv(debugpoint); 457 } 458 #endif 459 if (!acpi_disabled("bus")) 460 acpi_probe_children(dev); 461 462 /* 463 * Register our shutdown handlers 464 */ 465 EVENTHANDLER_REGISTER(shutdown_pre_sync, acpi_shutdown_pre_sync, sc, SHUTDOWN_PRI_LAST); 466 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc, SHUTDOWN_PRI_LAST); 467 468 /* 469 * Register our acpi event handlers. 470 * XXX should be configurable eg. via userland policy manager. 471 */ 472 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep, sc, ACPI_EVENT_PRI_LAST); 473 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup, sc, ACPI_EVENT_PRI_LAST); 474 475 /* 476 * Flag our initial states. 477 */ 478 sc->acpi_enabled = 1; 479 sc->acpi_sstate = ACPI_STATE_S0; 480 sc->acpi_sleep_disabled = 0; 481 482 /* 483 * Create the control device 484 */ 485 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, 0, 5, 0660, "acpi"); 486 sc->acpi_dev_t->si_drv1 = sc; 487 488 #ifdef ENABLE_DEBUGGER 489 debugpoint = getenv("debug.acpi.debugger"); 490 if (debugpoint) { 491 if (!strcmp(debugpoint, "running")) 492 acpi_EnterDebugger(); 493 freeenv(debugpoint); 494 } 495 #endif 496 497 #if defined(ACPI_MAX_THREADS) && ACPI_MAX_THREADS > 0 498 if ((error = acpi_task_thread_init())) { 499 goto out; 500 } 501 #endif 502 503 if ((error = acpi_machdep_init(dev))) { 504 goto out; 505 } 506 507 /* Register ACPI again to pass the correct argument of pm_func. */ 508 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc); 509 510 error = 0; 511 512 out: 513 ACPI_UNLOCK; 514 return_VALUE(error); 515 } 516 517 /* 518 * Handle a new device being added 519 */ 520 static device_t 521 acpi_add_child(device_t bus, int order, const char *name, int unit) 522 { 523 struct acpi_device *ad; 524 device_t child; 525 526 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT)) == NULL) 527 return(NULL); 528 bzero(ad, sizeof(*ad)); 529 530 resource_list_init(&ad->ad_rl); 531 532 child = device_add_child_ordered(bus, order, name, unit); 533 if (child != NULL) 534 device_set_ivars(child, ad); 535 return(child); 536 } 537 538 /* 539 * Print child device resource usage 540 */ 541 static int 542 acpi_print_resources(struct resource_list *rl, const char *name, int type, const char *format) 543 { 544 struct resource_list_entry *rle; 545 int printed, retval; 546 547 printed = 0; 548 retval = 0; 549 550 if (!SLIST_FIRST(rl)) 551 return(0); 552 553 /* Yes, this is kinda cheating */ 554 SLIST_FOREACH(rle, rl, link) { 555 if (rle->type == type) { 556 if (printed == 0) 557 retval += printf(" %s ", name); 558 else if (printed > 0) 559 retval += printf(","); 560 printed++; 561 retval += printf(format, rle->start); 562 if (rle->count > 1) { 563 retval += printf("-"); 564 retval += printf(format, rle->start + 565 rle->count - 1); 566 } 567 } 568 } 569 return(retval); 570 } 571 572 static int 573 acpi_print_child(device_t bus, device_t child) 574 { 575 struct acpi_device *adev = device_get_ivars(child); 576 struct resource_list *rl = &adev->ad_rl; 577 int retval = 0; 578 579 retval += bus_print_child_header(bus, child); 580 retval += acpi_print_resources(rl, "port", SYS_RES_IOPORT, "%#lx"); 581 retval += acpi_print_resources(rl, "iomem", SYS_RES_MEMORY, "%#lx"); 582 retval += acpi_print_resources(rl, "irq", SYS_RES_IRQ, "%ld"); 583 retval += acpi_print_resources(rl, "drq", SYS_RES_DRQ, "%ld"); 584 retval += bus_print_child_footer(bus, child); 585 586 return(retval); 587 } 588 589 590 /* 591 * Handle per-device ivars 592 */ 593 static int 594 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) 595 { 596 struct acpi_device *ad; 597 598 if ((ad = device_get_ivars(child)) == NULL) { 599 printf("device has no ivars\n"); 600 return(ENOENT); 601 } 602 603 switch(index) { 604 /* ACPI ivars */ 605 case ACPI_IVAR_HANDLE: 606 *(ACPI_HANDLE *)result = ad->ad_handle; 607 break; 608 case ACPI_IVAR_MAGIC: 609 *(int *)result = ad->ad_magic; 610 break; 611 case ACPI_IVAR_PRIVATE: 612 *(void **)result = ad->ad_private; 613 break; 614 615 /* ISA compatibility */ 616 case ISA_IVAR_VENDORID: 617 case ISA_IVAR_SERIAL: 618 case ISA_IVAR_COMPATID: 619 *(int *)result = -1; 620 break; 621 622 case ISA_IVAR_LOGICALID: 623 *(int *)result = acpi_isa_get_logicalid(child); 624 break; 625 626 default: 627 panic("bad ivar read request (%d)\n", index); 628 return(ENOENT); 629 } 630 return(0); 631 } 632 633 static int 634 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value) 635 { 636 struct acpi_device *ad; 637 638 if ((ad = device_get_ivars(child)) == NULL) { 639 printf("device has no ivars\n"); 640 return(ENOENT); 641 } 642 643 switch(index) { 644 /* ACPI ivars */ 645 case ACPI_IVAR_HANDLE: 646 ad->ad_handle = (ACPI_HANDLE)value; 647 break; 648 case ACPI_IVAR_MAGIC: 649 ad->ad_magic = (int )value; 650 break; 651 case ACPI_IVAR_PRIVATE: 652 ad->ad_private = (void *)value; 653 break; 654 655 default: 656 panic("bad ivar write request (%d)\n", index); 657 return(ENOENT); 658 } 659 return(0); 660 } 661 662 /* 663 * Handle child resource allocation/removal 664 */ 665 static int 666 acpi_set_resource(device_t dev, device_t child, int type, int rid, u_long start, u_long count) 667 { 668 struct acpi_device *ad = device_get_ivars(child); 669 struct resource_list *rl = &ad->ad_rl; 670 671 resource_list_add(rl, type, rid, start, start + count -1, count); 672 673 return(0); 674 } 675 676 static int 677 acpi_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, u_long *countp) 678 { 679 struct acpi_device *ad = device_get_ivars(child); 680 struct resource_list *rl = &ad->ad_rl; 681 struct resource_list_entry *rle; 682 683 rle = resource_list_find(rl, type, rid); 684 if (!rle) 685 return(ENOENT); 686 687 if (startp) 688 *startp = rle->start; 689 if (countp) 690 *countp = rle->count; 691 692 return(0); 693 } 694 695 static struct resource * 696 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, 697 u_long start, u_long end, u_long count, u_int flags) 698 { 699 struct acpi_device *ad = device_get_ivars(child); 700 struct resource_list *rl = &ad->ad_rl; 701 702 return(resource_list_alloc(rl, bus, child, type, rid, start, end, count, flags)); 703 } 704 705 static int 706 acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r) 707 { 708 struct acpi_device *ad = device_get_ivars(child); 709 struct resource_list *rl = &ad->ad_rl; 710 711 return(resource_list_release(rl, bus, child, type, rid, r)); 712 } 713 714 /* 715 * Handle ISA-like devices probing for a PnP ID to match. 716 */ 717 #define PNP_EISAID(s) \ 718 ((((s[0] - '@') & 0x1f) << 2) \ 719 | (((s[1] - '@') & 0x18) >> 3) \ 720 | (((s[1] - '@') & 0x07) << 13) \ 721 | (((s[2] - '@') & 0x1f) << 8) \ 722 | (PNP_HEXTONUM(s[4]) << 16) \ 723 | (PNP_HEXTONUM(s[3]) << 20) \ 724 | (PNP_HEXTONUM(s[6]) << 24) \ 725 | (PNP_HEXTONUM(s[5]) << 28)) 726 727 static u_int32_t 728 acpi_isa_get_logicalid(device_t dev) 729 { 730 ACPI_HANDLE h; 731 ACPI_DEVICE_INFO devinfo; 732 ACPI_STATUS error; 733 u_int32_t pnpid; 734 735 ACPI_FUNCTION_TRACE(__func__); 736 737 pnpid = 0; 738 ACPI_LOCK; 739 740 /* fetch and validate the HID */ 741 if ((h = acpi_get_handle(dev)) == NULL) 742 goto out; 743 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 744 goto out; 745 if (!(devinfo.Valid & ACPI_VALID_HID)) 746 goto out; 747 748 pnpid = PNP_EISAID(devinfo.HardwareId); 749 out: 750 ACPI_UNLOCK; 751 return_VALUE(pnpid); 752 } 753 754 static int 755 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids) 756 { 757 int result; 758 u_int32_t pnpid; 759 760 ACPI_FUNCTION_TRACE(__func__); 761 762 /* 763 * ISA-style drivers attached to ACPI may persist and 764 * probe manually if we return ENOENT. We never want 765 * that to happen, so don't ever return it. 766 */ 767 result = ENXIO; 768 769 /* scan the supplied IDs for a match */ 770 pnpid = acpi_isa_get_logicalid(child); 771 while (ids && ids->ip_id) { 772 if (pnpid == ids->ip_id) { 773 result = 0; 774 goto out; 775 } 776 ids++; 777 } 778 out: 779 return_VALUE(result); 780 } 781 782 /* 783 * Scan relevant portions of the ACPI namespace and attach child devices. 784 * 785 * Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and \_SB_ scopes, 786 * and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec. 787 */ 788 static void 789 acpi_probe_children(device_t bus) 790 { 791 ACPI_HANDLE parent; 792 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL}; 793 int i; 794 795 ACPI_FUNCTION_TRACE(__func__); 796 ACPI_ASSERTLOCK; 797 798 /* 799 * Create any static children by calling device identify methods. 800 */ 801 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n")); 802 bus_generic_probe(bus); 803 804 /* 805 * Scan the namespace and insert placeholders for all the devices that 806 * we find. 807 * 808 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because 809 * we want to create nodes for all devices, not just those that are currently 810 * present. (This assumes that we don't want to create/remove devices as they 811 * appear, which might be smarter.) 812 */ 813 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n")); 814 for (i = 0; scopes[i] != NULL; i++) 815 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent))) 816 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, acpi_probe_child, bus, NULL); 817 818 /* 819 * Scan all of the child devices we have created and let them probe/attach. 820 */ 821 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n")); 822 bus_generic_attach(bus); 823 824 /* 825 * Some of these children may have attached others as part of their attach 826 * process (eg. the root PCI bus driver), so rescan. 827 */ 828 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n")); 829 bus_generic_attach(bus); 830 831 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n")); 832 return_VOID; 833 } 834 835 /* 836 * Evaluate a child device and determine whether we might attach a device to 837 * it. 838 */ 839 static ACPI_STATUS 840 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 841 { 842 ACPI_OBJECT_TYPE type; 843 device_t child, bus = (device_t)context; 844 845 ACPI_FUNCTION_TRACE(__func__); 846 847 /* 848 * Skip this device if we think we'll have trouble with it. 849 */ 850 if (acpi_avoid(handle)) 851 return_ACPI_STATUS(AE_OK); 852 853 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) { 854 switch(type) { 855 case ACPI_TYPE_DEVICE: 856 case ACPI_TYPE_PROCESSOR: 857 case ACPI_TYPE_THERMAL: 858 case ACPI_TYPE_POWER: 859 if (acpi_disabled("children")) 860 break; 861 /* 862 * Create a placeholder device for this node. Sort the placeholder 863 * so that the probe/attach passes will run breadth-first. 864 */ 865 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", acpi_name(handle))); 866 child = BUS_ADD_CHILD(bus, level * 10, NULL, -1); 867 if (child == NULL) 868 break; 869 acpi_set_handle(child, handle); 870 871 /* 872 * Check that the device is present. If it's not present, 873 * leave it disabled (so that we have a device_t attached to 874 * the handle, but we don't probe it). 875 */ 876 if ((type == ACPI_TYPE_DEVICE) && (!acpi_DeviceIsPresent(child))) { 877 device_disable(child); 878 break; 879 } 880 881 /* 882 * Get the device's resource settings and attach them. 883 * Note that if the device has _PRS but no _CRS, we need 884 * to decide when it's appropriate to try to configure the 885 * device. Ignore the return value here; it's OK for the 886 * device not to have any resources. 887 */ 888 acpi_parse_resources(child, handle, &acpi_res_parse_set); 889 890 /* if we're debugging, probe/attach now rather than later */ 891 ACPI_DEBUG_EXEC(device_probe_and_attach(child)); 892 break; 893 } 894 } 895 return_ACPI_STATUS(AE_OK); 896 } 897 898 static void 899 acpi_shutdown_pre_sync(void *arg, int howto) 900 { 901 902 ACPI_ASSERTLOCK; 903 904 /* 905 * Disable all ACPI events before soft off, otherwise the system 906 * will be turned on again on some laptops. 907 * 908 * XXX this should probably be restricted to masking some events just 909 * before powering down, since we may still need ACPI during the 910 * shutdown process. 911 */ 912 acpi_Disable((struct acpi_softc *)arg); 913 } 914 915 static void 916 acpi_shutdown_final(void *arg, int howto) 917 { 918 ACPI_STATUS status; 919 920 ACPI_ASSERTLOCK; 921 922 if (howto & RB_POWEROFF) { 923 printf("Power system off using ACPI...\n"); 924 if (ACPI_FAILURE(status = AcpiEnterSleepStatePrep(acpi_off_state))) { 925 printf("AcpiEnterSleepStatePrep failed - %s\n", 926 AcpiFormatException(status)); 927 return; 928 } 929 if (ACPI_FAILURE(status = AcpiEnterSleepState(acpi_off_state))) { 930 printf("ACPI power-off failed - %s\n", AcpiFormatException(status)); 931 } else { 932 DELAY(1000000); 933 printf("ACPI power-off failed - timeout\n"); 934 } 935 } 936 } 937 938 static void 939 acpi_enable_fixed_events(struct acpi_softc *sc) 940 { 941 static int first_time = 1; 942 #define MSGFORMAT "%s button is handled as a fixed feature programming model.\n" 943 944 ACPI_ASSERTLOCK; 945 946 /* Enable and clear fixed events and install handlers. */ 947 if ((AcpiGbl_FADT != NULL) && (AcpiGbl_FADT->PwrButton == 0)) { 948 AcpiEnableEvent(ACPI_EVENT_POWER_BUTTON, ACPI_EVENT_FIXED, 0); 949 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON, ACPI_EVENT_FIXED); 950 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON, 951 acpi_eventhandler_power_button_for_sleep, sc); 952 if (first_time) { 953 device_printf(sc->acpi_dev, MSGFORMAT, "power"); 954 } 955 } 956 if ((AcpiGbl_FADT != NULL) && (AcpiGbl_FADT->SleepButton == 0)) { 957 AcpiEnableEvent(ACPI_EVENT_SLEEP_BUTTON, ACPI_EVENT_FIXED, 0); 958 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON, ACPI_EVENT_FIXED); 959 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON, 960 acpi_eventhandler_sleep_button_for_sleep, sc); 961 if (first_time) { 962 device_printf(sc->acpi_dev, MSGFORMAT, "sleep"); 963 } 964 } 965 966 first_time = 0; 967 } 968 969 /* 970 * Returns true if the device is actually present and should 971 * be attached to. This requires the present, enabled, UI-visible 972 * and diagnostics-passed bits to be set. 973 */ 974 BOOLEAN 975 acpi_DeviceIsPresent(device_t dev) 976 { 977 ACPI_HANDLE h; 978 ACPI_DEVICE_INFO devinfo; 979 ACPI_STATUS error; 980 981 ACPI_ASSERTLOCK; 982 983 if ((h = acpi_get_handle(dev)) == NULL) 984 return(FALSE); 985 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 986 return(FALSE); 987 /* if no _STA method, must be present */ 988 if (!(devinfo.Valid & ACPI_VALID_STA)) 989 return(TRUE); 990 /* return true for 'present' and 'functioning' */ 991 if ((devinfo.CurrentStatus & 0x9) == 0x9) 992 return(TRUE); 993 return(FALSE); 994 } 995 996 /* 997 * Returns true if the battery is actually present and inserted. 998 */ 999 BOOLEAN 1000 acpi_BatteryIsPresent(device_t dev) 1001 { 1002 ACPI_HANDLE h; 1003 ACPI_DEVICE_INFO devinfo; 1004 ACPI_STATUS error; 1005 1006 ACPI_ASSERTLOCK; 1007 1008 if ((h = acpi_get_handle(dev)) == NULL) 1009 return(FALSE); 1010 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 1011 return(FALSE); 1012 /* if no _STA method, must be present */ 1013 if (!(devinfo.Valid & ACPI_VALID_STA)) 1014 return(TRUE); 1015 /* return true for 'present' and 'functioning' */ 1016 if ((devinfo.CurrentStatus & 0x19) == 0x19) 1017 return(TRUE); 1018 return(FALSE); 1019 } 1020 1021 /* 1022 * Match a HID string against a device 1023 */ 1024 BOOLEAN 1025 acpi_MatchHid(device_t dev, char *hid) 1026 { 1027 ACPI_HANDLE h; 1028 ACPI_DEVICE_INFO devinfo; 1029 ACPI_STATUS error; 1030 int cid; 1031 1032 ACPI_ASSERTLOCK; 1033 1034 if (hid == NULL) 1035 return(FALSE); 1036 if ((h = acpi_get_handle(dev)) == NULL) 1037 return(FALSE); 1038 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 1039 return(FALSE); 1040 if ((devinfo.Valid & ACPI_VALID_HID) && !strcmp(hid, devinfo.HardwareId)) 1041 return(TRUE); 1042 if (ACPI_FAILURE(error = acpi_EvaluateInteger(h, "_CID", &cid))) 1043 return(FALSE); 1044 if (cid == PNP_EISAID(hid)) 1045 return(TRUE); 1046 return(FALSE); 1047 } 1048 1049 /* 1050 * Return the handle of a named object within our scope, ie. that of (parent) 1051 * or one if its parents. 1052 */ 1053 ACPI_STATUS 1054 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result) 1055 { 1056 ACPI_HANDLE r; 1057 ACPI_STATUS status; 1058 1059 ACPI_ASSERTLOCK; 1060 1061 /* walk back up the tree to the root */ 1062 for (;;) { 1063 if (ACPI_SUCCESS(status = AcpiGetHandle(parent, path, &r))) { 1064 *result = r; 1065 return(AE_OK); 1066 } 1067 if (status != AE_NOT_FOUND) 1068 return(AE_OK); 1069 if (ACPI_FAILURE(AcpiGetParent(parent, &r))) 1070 return(AE_NOT_FOUND); 1071 parent = r; 1072 } 1073 } 1074 1075 /* 1076 * Allocate a buffer with a preset data size. 1077 */ 1078 ACPI_BUFFER * 1079 acpi_AllocBuffer(int size) 1080 { 1081 ACPI_BUFFER *buf; 1082 1083 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL) 1084 return(NULL); 1085 buf->Length = size; 1086 buf->Pointer = (void *)(buf + 1); 1087 return(buf); 1088 } 1089 1090 /* 1091 * Evaluate a path that should return an integer. 1092 */ 1093 ACPI_STATUS 1094 acpi_EvaluateInteger(ACPI_HANDLE handle, char *path, int *number) 1095 { 1096 ACPI_STATUS error; 1097 ACPI_BUFFER buf; 1098 ACPI_OBJECT param; 1099 1100 ACPI_ASSERTLOCK; 1101 1102 if (handle == NULL) 1103 handle = ACPI_ROOT_OBJECT; 1104 1105 /* 1106 * Assume that what we've been pointed at is an Integer object, or 1107 * a method that will return an Integer. 1108 */ 1109 buf.Pointer = ¶m; 1110 buf.Length = sizeof(param); 1111 if (ACPI_SUCCESS(error = AcpiEvaluateObject(handle, path, NULL, &buf))) { 1112 if (param.Type == ACPI_TYPE_INTEGER) { 1113 *number = param.Integer.Value; 1114 } else { 1115 error = AE_TYPE; 1116 } 1117 } 1118 1119 /* 1120 * In some applications, a method that's expected to return an Integer 1121 * may instead return a Buffer (probably to simplify some internal 1122 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer, 1123 * convert it into an Integer as best we can. 1124 * 1125 * This is a hack. 1126 */ 1127 if (error == AE_BUFFER_OVERFLOW) { 1128 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) { 1129 error = AE_NO_MEMORY; 1130 } else { 1131 if (ACPI_SUCCESS(error = AcpiEvaluateObject(handle, path, NULL, &buf))) { 1132 error = acpi_ConvertBufferToInteger(&buf, number); 1133 } 1134 } 1135 AcpiOsFree(buf.Pointer); 1136 } 1137 return(error); 1138 } 1139 1140 ACPI_STATUS 1141 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, int *number) 1142 { 1143 ACPI_OBJECT *p; 1144 int i; 1145 1146 p = (ACPI_OBJECT *)bufp->Pointer; 1147 if (p->Type == ACPI_TYPE_INTEGER) { 1148 *number = p->Integer.Value; 1149 return(AE_OK); 1150 } 1151 if (p->Type != ACPI_TYPE_BUFFER) 1152 return(AE_TYPE); 1153 if (p->Buffer.Length > sizeof(int)) 1154 return(AE_BAD_DATA); 1155 *number = 0; 1156 for (i = 0; i < p->Buffer.Length; i++) 1157 *number += (*(p->Buffer.Pointer + i) << (i * 8)); 1158 return(AE_OK); 1159 } 1160 1161 /* 1162 * Iterate over the elements of an a package object, calling the supplied 1163 * function for each element. 1164 * 1165 * XXX possible enhancement might be to abort traversal on error. 1166 */ 1167 ACPI_STATUS 1168 acpi_ForeachPackageObject(ACPI_OBJECT *pkg, void (* func)(ACPI_OBJECT *comp, void *arg), void *arg) 1169 { 1170 ACPI_OBJECT *comp; 1171 int i; 1172 1173 if ((pkg == NULL) || (pkg->Type != ACPI_TYPE_PACKAGE)) 1174 return(AE_BAD_PARAMETER); 1175 1176 /* iterate over components */ 1177 for (i = 0, comp = pkg->Package.Elements; i < pkg->Package.Count; i++, comp++) 1178 func(comp, arg); 1179 1180 return(AE_OK); 1181 } 1182 1183 /* 1184 * Find the (index)th resource object in a set. 1185 */ 1186 ACPI_STATUS 1187 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp) 1188 { 1189 ACPI_RESOURCE *rp; 1190 int i; 1191 1192 rp = (ACPI_RESOURCE *)buf->Pointer; 1193 i = index; 1194 while (i-- > 0) { 1195 /* range check */ 1196 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 1197 return(AE_BAD_PARAMETER); 1198 /* check for terminator */ 1199 if ((rp->Id == ACPI_RSTYPE_END_TAG) || 1200 (rp->Length == 0)) 1201 return(AE_NOT_FOUND); 1202 rp = ACPI_RESOURCE_NEXT(rp); 1203 } 1204 if (resp != NULL) 1205 *resp = rp; 1206 return(AE_OK); 1207 } 1208 1209 /* 1210 * Append an ACPI_RESOURCE to an ACPI_BUFFER. 1211 * 1212 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER 1213 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible 1214 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of 1215 * resources. 1216 */ 1217 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512 1218 1219 ACPI_STATUS 1220 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res) 1221 { 1222 ACPI_RESOURCE *rp; 1223 void *newp; 1224 1225 /* 1226 * Initialise the buffer if necessary. 1227 */ 1228 if (buf->Pointer == NULL) { 1229 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE; 1230 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL) 1231 return(AE_NO_MEMORY); 1232 rp = (ACPI_RESOURCE *)buf->Pointer; 1233 rp->Id = ACPI_RSTYPE_END_TAG; 1234 rp->Length = 0; 1235 } 1236 if (res == NULL) 1237 return(AE_OK); 1238 1239 /* 1240 * Scan the current buffer looking for the terminator. 1241 * This will either find the terminator or hit the end 1242 * of the buffer and return an error. 1243 */ 1244 rp = (ACPI_RESOURCE *)buf->Pointer; 1245 for (;;) { 1246 /* range check, don't go outside the buffer */ 1247 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 1248 return(AE_BAD_PARAMETER); 1249 if ((rp->Id == ACPI_RSTYPE_END_TAG) || 1250 (rp->Length == 0)) { 1251 break; 1252 } 1253 rp = ACPI_RESOURCE_NEXT(rp); 1254 } 1255 1256 /* 1257 * Check the size of the buffer and expand if required. 1258 * 1259 * Required size is: 1260 * size of existing resources before terminator + 1261 * size of new resource and header + 1262 * size of terminator. 1263 * 1264 * Note that this loop should really only run once, unless 1265 * for some reason we are stuffing a *really* huge resource. 1266 */ 1267 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) + 1268 res->Length + ACPI_RESOURCE_LENGTH_NO_DATA + 1269 ACPI_RESOURCE_LENGTH) >= buf->Length) { 1270 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL) 1271 return(AE_NO_MEMORY); 1272 bcopy(buf->Pointer, newp, buf->Length); 1273 rp = (ACPI_RESOURCE *)((u_int8_t *)newp + 1274 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer)); 1275 AcpiOsFree(buf->Pointer); 1276 buf->Pointer = newp; 1277 buf->Length += buf->Length; 1278 } 1279 1280 /* 1281 * Insert the new resource. 1282 */ 1283 bcopy(res, rp, res->Length + ACPI_RESOURCE_LENGTH_NO_DATA); 1284 1285 /* 1286 * And add the terminator. 1287 */ 1288 rp = ACPI_RESOURCE_NEXT(rp); 1289 rp->Id = ACPI_RSTYPE_END_TAG; 1290 rp->Length = 0; 1291 1292 return(AE_OK); 1293 } 1294 1295 #define ACPI_MINIMUM_AWAKETIME 5 1296 1297 static void 1298 acpi_sleep_enable(void *arg) 1299 { 1300 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0; 1301 } 1302 1303 /* 1304 * Set the system sleep state 1305 * 1306 * Currently we only support S1 and S5 1307 */ 1308 ACPI_STATUS 1309 acpi_SetSleepState(struct acpi_softc *sc, int state) 1310 { 1311 ACPI_STATUS status = AE_OK; 1312 UINT8 TypeA; 1313 UINT8 TypeB; 1314 1315 ACPI_FUNCTION_TRACE_U32(__func__, state); 1316 ACPI_ASSERTLOCK; 1317 1318 if (sc->acpi_sstate != ACPI_STATE_S0) 1319 return_ACPI_STATUS(AE_BAD_PARAMETER); /* avoid reentry */ 1320 1321 if (sc->acpi_sleep_disabled) 1322 return_ACPI_STATUS(AE_OK); 1323 1324 switch (state) { 1325 case ACPI_STATE_S0: /* XXX only for testing */ 1326 if (ACPI_FAILURE(status = AcpiEnterSleepState((UINT8)state))) { 1327 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status)); 1328 } 1329 break; 1330 1331 case ACPI_STATE_S1: 1332 case ACPI_STATE_S2: 1333 case ACPI_STATE_S3: 1334 case ACPI_STATE_S4: 1335 if (ACPI_FAILURE(status = AcpiHwGetSleepTypeData((UINT8)state, &TypeA, &TypeB))) { 1336 device_printf(sc->acpi_dev, "AcpiHwGetSleepTypeData failed - %s\n", AcpiFormatException(status)); 1337 break; 1338 } 1339 1340 /* 1341 * Inform all devices that we are going to sleep. 1342 */ 1343 if (DEVICE_SUSPEND(root_bus) != 0) { 1344 /* 1345 * Re-wake the system. 1346 * 1347 * XXX note that a better two-pass approach with a 'veto' pass 1348 * followed by a "real thing" pass would be better, but the 1349 * current bus interface does not provide for this. 1350 */ 1351 DEVICE_RESUME(root_bus); 1352 return_ACPI_STATUS(AE_ERROR); 1353 } 1354 1355 if (ACPI_FAILURE(status = AcpiEnterSleepStatePrep(state))) { 1356 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 1357 AcpiFormatException(status)); 1358 break; 1359 } 1360 1361 sc->acpi_sstate = state; 1362 sc->acpi_sleep_disabled = 1; 1363 1364 if (state != ACPI_STATE_S1) { 1365 acpi_sleep_machdep(sc, state); 1366 1367 /* AcpiEnterSleepState() maybe incompleted, unlock here. */ 1368 AcpiUtReleaseMutex(ACPI_MTX_HARDWARE); 1369 1370 /* Re-enable ACPI hardware on wakeup from sleep state 4. */ 1371 if (state == ACPI_STATE_S4) { 1372 AcpiEnable(); 1373 } 1374 } else { 1375 if (ACPI_FAILURE(status = AcpiEnterSleepState((UINT8)state))) { 1376 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status)); 1377 break; 1378 } 1379 } 1380 AcpiLeaveSleepState((UINT8)state); 1381 DEVICE_RESUME(root_bus); 1382 sc->acpi_sstate = ACPI_STATE_S0; 1383 acpi_enable_fixed_events(sc); 1384 break; 1385 1386 case ACPI_STATE_S5: 1387 /* 1388 * Shut down cleanly and power off. This will call us back through the 1389 * shutdown handlers. 1390 */ 1391 shutdown_nice(RB_POWEROFF); 1392 break; 1393 1394 default: 1395 status = AE_BAD_PARAMETER; 1396 break; 1397 } 1398 1399 if (sc->acpi_sleep_disabled) 1400 timeout(acpi_sleep_enable, (caddr_t)sc, hz * ACPI_MINIMUM_AWAKETIME); 1401 1402 return_ACPI_STATUS(status); 1403 } 1404 1405 /* 1406 * Enable/Disable ACPI 1407 */ 1408 ACPI_STATUS 1409 acpi_Enable(struct acpi_softc *sc) 1410 { 1411 ACPI_STATUS status; 1412 u_int32_t flags; 1413 1414 ACPI_FUNCTION_TRACE(__func__); 1415 ACPI_ASSERTLOCK; 1416 1417 flags = ACPI_NO_ADDRESS_SPACE_INIT | ACPI_NO_HARDWARE_INIT | 1418 ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; 1419 if (!sc->acpi_enabled) { 1420 status = AcpiEnableSubsystem(flags); 1421 } else { 1422 status = AE_OK; 1423 } 1424 if (status == AE_OK) 1425 sc->acpi_enabled = 1; 1426 return_ACPI_STATUS(status); 1427 } 1428 1429 ACPI_STATUS 1430 acpi_Disable(struct acpi_softc *sc) 1431 { 1432 ACPI_STATUS status; 1433 1434 ACPI_FUNCTION_TRACE(__func__); 1435 ACPI_ASSERTLOCK; 1436 1437 if (sc->acpi_enabled) { 1438 status = AcpiDisable(); 1439 } else { 1440 status = AE_OK; 1441 } 1442 if (status == AE_OK) 1443 sc->acpi_enabled = 0; 1444 return_ACPI_STATUS(status); 1445 } 1446 1447 /* 1448 * ACPI Event Handlers 1449 */ 1450 1451 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */ 1452 1453 static void 1454 acpi_system_eventhandler_sleep(void *arg, int state) 1455 { 1456 ACPI_FUNCTION_TRACE_U32(__func__, state); 1457 1458 ACPI_LOCK; 1459 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) 1460 acpi_SetSleepState((struct acpi_softc *)arg, state); 1461 ACPI_UNLOCK; 1462 return_VOID; 1463 } 1464 1465 static void 1466 acpi_system_eventhandler_wakeup(void *arg, int state) 1467 { 1468 ACPI_FUNCTION_TRACE_U32(__func__, state); 1469 1470 /* Well, what to do? :-) */ 1471 1472 ACPI_LOCK; 1473 ACPI_UNLOCK; 1474 1475 return_VOID; 1476 } 1477 1478 /* 1479 * ACPICA Event Handlers (FixedEvent, also called from button notify handler) 1480 */ 1481 UINT32 1482 acpi_eventhandler_power_button_for_sleep(void *context) 1483 { 1484 struct acpi_softc *sc = (struct acpi_softc *)context; 1485 1486 ACPI_FUNCTION_TRACE(__func__); 1487 1488 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx); 1489 1490 return_VALUE(ACPI_INTERRUPT_HANDLED); 1491 } 1492 1493 UINT32 1494 acpi_eventhandler_power_button_for_wakeup(void *context) 1495 { 1496 struct acpi_softc *sc = (struct acpi_softc *)context; 1497 1498 ACPI_FUNCTION_TRACE(__func__); 1499 1500 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx); 1501 1502 return_VALUE(ACPI_INTERRUPT_HANDLED); 1503 } 1504 1505 UINT32 1506 acpi_eventhandler_sleep_button_for_sleep(void *context) 1507 { 1508 struct acpi_softc *sc = (struct acpi_softc *)context; 1509 1510 ACPI_FUNCTION_TRACE(__func__); 1511 1512 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx); 1513 1514 return_VALUE(ACPI_INTERRUPT_HANDLED); 1515 } 1516 1517 UINT32 1518 acpi_eventhandler_sleep_button_for_wakeup(void *context) 1519 { 1520 struct acpi_softc *sc = (struct acpi_softc *)context; 1521 1522 ACPI_FUNCTION_TRACE(__func__); 1523 1524 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx); 1525 1526 return_VALUE(ACPI_INTERRUPT_HANDLED); 1527 } 1528 1529 /* 1530 * XXX This is kinda ugly, and should not be here. 1531 */ 1532 struct acpi_staticbuf { 1533 ACPI_BUFFER buffer; 1534 char data[512]; 1535 }; 1536 1537 char * 1538 acpi_name(ACPI_HANDLE handle) 1539 { 1540 static struct acpi_staticbuf buf; 1541 1542 ACPI_ASSERTLOCK; 1543 1544 buf.buffer.Length = 512; 1545 buf.buffer.Pointer = &buf.data[0]; 1546 1547 if (ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer))) 1548 return(buf.buffer.Pointer); 1549 return("(unknown path)"); 1550 } 1551 1552 /* 1553 * Debugging/bug-avoidance. Avoid trying to fetch info on various 1554 * parts of the namespace. 1555 */ 1556 int 1557 acpi_avoid(ACPI_HANDLE handle) 1558 { 1559 char *cp, *np; 1560 int len; 1561 1562 np = acpi_name(handle); 1563 if (*np == '\\') 1564 np++; 1565 if ((cp = getenv("debug.acpi.avoid")) == NULL) 1566 return(0); 1567 1568 /* scan the avoid list checking for a match */ 1569 for (;;) { 1570 while ((*cp != 0) && isspace(*cp)) 1571 cp++; 1572 if (*cp == 0) 1573 break; 1574 len = 0; 1575 while ((cp[len] != 0) && !isspace(cp[len])) 1576 len++; 1577 if (!strncmp(cp, np, len)) { 1578 freeenv(cp); 1579 return(1); 1580 } 1581 cp += len; 1582 } 1583 freeenv(cp); 1584 return(0); 1585 } 1586 1587 /* 1588 * Debugging/bug-avoidance. Disable ACPI subsystem components. 1589 */ 1590 int 1591 acpi_disabled(char *subsys) 1592 { 1593 char *cp, *env; 1594 int len; 1595 1596 if ((env = getenv("debug.acpi.disable")) == NULL) 1597 return(0); 1598 if (!strcmp(env, "all")) { 1599 freeenv(env); 1600 return(1); 1601 } 1602 1603 /* scan the disable list checking for a match */ 1604 cp = env; 1605 for (;;) { 1606 while ((*cp != 0) && isspace(*cp)) 1607 cp++; 1608 if (*cp == 0) 1609 break; 1610 len = 0; 1611 while ((cp[len] != 0) && !isspace(cp[len])) 1612 len++; 1613 if (!strncmp(cp, subsys, len)) { 1614 freeenv(env); 1615 return(1); 1616 } 1617 cp += len; 1618 } 1619 freeenv(env); 1620 return(0); 1621 } 1622 1623 /* 1624 * Control interface. 1625 * 1626 * We multiplex ioctls for all participating ACPI devices here. Individual 1627 * drivers wanting to be accessible via /dev/acpi should use the register/deregister 1628 * interface to make their handlers visible. 1629 */ 1630 struct acpi_ioctl_hook 1631 { 1632 TAILQ_ENTRY(acpi_ioctl_hook) link; 1633 u_long cmd; 1634 int (* fn)(u_long cmd, caddr_t addr, void *arg); 1635 void *arg; 1636 }; 1637 1638 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks; 1639 static int acpi_ioctl_hooks_initted; 1640 1641 /* 1642 * Register an ioctl handler. 1643 */ 1644 int 1645 acpi_register_ioctl(u_long cmd, int (* fn)(u_long cmd, caddr_t addr, void *arg), void *arg) 1646 { 1647 struct acpi_ioctl_hook *hp; 1648 1649 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL) 1650 return(ENOMEM); 1651 hp->cmd = cmd; 1652 hp->fn = fn; 1653 hp->arg = arg; 1654 if (acpi_ioctl_hooks_initted == 0) { 1655 TAILQ_INIT(&acpi_ioctl_hooks); 1656 acpi_ioctl_hooks_initted = 1; 1657 } 1658 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link); 1659 return(0); 1660 } 1661 1662 /* 1663 * Deregister an ioctl handler. 1664 */ 1665 void 1666 acpi_deregister_ioctl(u_long cmd, int (* fn)(u_long cmd, caddr_t addr, void *arg)) 1667 { 1668 struct acpi_ioctl_hook *hp; 1669 1670 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) 1671 if ((hp->cmd == cmd) && (hp->fn == fn)) 1672 break; 1673 1674 if (hp != NULL) { 1675 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link); 1676 free(hp, M_ACPIDEV); 1677 } 1678 } 1679 1680 static int 1681 acpiopen(dev_t dev, int flag, int fmt, struct thread *td) 1682 { 1683 return(0); 1684 } 1685 1686 static int 1687 acpiclose(dev_t dev, int flag, int fmt, struct thread *td) 1688 { 1689 return(0); 1690 } 1691 1692 static int 1693 acpiioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 1694 { 1695 struct acpi_softc *sc; 1696 struct acpi_ioctl_hook *hp; 1697 int error, xerror, state; 1698 1699 ACPI_LOCK; 1700 1701 error = state = 0; 1702 sc = dev->si_drv1; 1703 1704 /* 1705 * Scan the list of registered ioctls, looking for handlers. 1706 */ 1707 if (acpi_ioctl_hooks_initted) { 1708 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) { 1709 if (hp->cmd == cmd) { 1710 xerror = hp->fn(cmd, addr, hp->arg); 1711 if (xerror != 0) 1712 error = xerror; 1713 goto out; 1714 } 1715 } 1716 } 1717 1718 /* 1719 * Core system ioctls. 1720 */ 1721 switch (cmd) { 1722 case ACPIIO_ENABLE: 1723 if (ACPI_FAILURE(acpi_Enable(sc))) 1724 error = ENXIO; 1725 break; 1726 1727 case ACPIIO_DISABLE: 1728 if (ACPI_FAILURE(acpi_Disable(sc))) 1729 error = ENXIO; 1730 break; 1731 1732 case ACPIIO_SETSLPSTATE: 1733 if (!sc->acpi_enabled) { 1734 error = ENXIO; 1735 break; 1736 } 1737 state = *(int *)addr; 1738 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) { 1739 acpi_SetSleepState(sc, state); 1740 } else { 1741 error = EINVAL; 1742 } 1743 break; 1744 1745 default: 1746 if (error == 0) 1747 error = EINVAL; 1748 break; 1749 } 1750 1751 out: 1752 ACPI_UNLOCK; 1753 return(error); 1754 } 1755 1756 static int 1757 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 1758 { 1759 char sleep_state[10]; 1760 int error; 1761 u_int new_state, old_state; 1762 1763 old_state = *(u_int *)oidp->oid_arg1; 1764 if (old_state > ACPI_S_STATES_MAX+1) { 1765 strcpy(sleep_state, "unknown"); 1766 } else { 1767 bzero(sleep_state, sizeof(sleep_state)); 1768 strncpy(sleep_state, sleep_state_names[old_state], 1769 sizeof(sleep_state_names[old_state])); 1770 } 1771 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req); 1772 if (error == 0 && req->newptr != NULL) { 1773 for (new_state = ACPI_STATE_S0; new_state <= ACPI_S_STATES_MAX+1; new_state++) { 1774 if (strncmp(sleep_state, sleep_state_names[new_state], 1775 sizeof(sleep_state)) == 0) 1776 break; 1777 } 1778 if (new_state <= ACPI_S_STATES_MAX+1) { 1779 if (new_state != old_state) { 1780 *(u_int *)oidp->oid_arg1 = new_state; 1781 } 1782 } else { 1783 error = EINVAL; 1784 } 1785 } 1786 return(error); 1787 } 1788 1789 #ifdef ACPI_DEBUG 1790 /* 1791 * Support for parsing debug options from the kernel environment. 1792 * 1793 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers 1794 * by specifying the names of the bits in the debug.acpi.layer and 1795 * debug.acpi.level environment variables. Bits may be unset by 1796 * prefixing the bit name with !. 1797 */ 1798 struct debugtag 1799 { 1800 char *name; 1801 UINT32 value; 1802 }; 1803 1804 static struct debugtag dbg_layer[] = { 1805 {"ACPI_UTILITIES", ACPI_UTILITIES}, 1806 {"ACPI_HARDWARE", ACPI_HARDWARE}, 1807 {"ACPI_EVENTS", ACPI_EVENTS}, 1808 {"ACPI_TABLES", ACPI_TABLES}, 1809 {"ACPI_NAMESPACE", ACPI_NAMESPACE}, 1810 {"ACPI_PARSER", ACPI_PARSER}, 1811 {"ACPI_DISPATCHER", ACPI_DISPATCHER}, 1812 {"ACPI_EXECUTER", ACPI_EXECUTER}, 1813 {"ACPI_RESOURCES", ACPI_RESOURCES}, 1814 {"ACPI_DEBUGGER", ACPI_DEBUGGER}, 1815 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES}, 1816 1817 {"ACPI_BUS", ACPI_BUS}, 1818 {"ACPI_SYSTEM", ACPI_SYSTEM}, 1819 {"ACPI_POWER", ACPI_POWER}, 1820 {"ACPI_EC", ACPI_EC}, 1821 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER}, 1822 {"ACPI_BATTERY", ACPI_BATTERY}, 1823 {"ACPI_BUTTON", ACPI_BUTTON}, 1824 {"ACPI_PROCESSOR", ACPI_PROCESSOR}, 1825 {"ACPI_THERMAL", ACPI_THERMAL}, 1826 {"ACPI_FAN", ACPI_FAN}, 1827 1828 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS}, 1829 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS}, 1830 {NULL, 0} 1831 }; 1832 1833 static struct debugtag dbg_level[] = { 1834 {"ACPI_LV_OK", ACPI_LV_OK}, 1835 {"ACPI_LV_INFO", ACPI_LV_INFO}, 1836 {"ACPI_LV_WARN", ACPI_LV_WARN}, 1837 {"ACPI_LV_ERROR", ACPI_LV_ERROR}, 1838 {"ACPI_LV_FATAL", ACPI_LV_FATAL}, 1839 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT}, 1840 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS}, 1841 {"ACPI_LV_THREADS", ACPI_LV_THREADS}, 1842 {"ACPI_LV_PARSE", ACPI_LV_PARSE}, 1843 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH}, 1844 {"ACPI_LV_LOAD", ACPI_LV_LOAD}, 1845 {"ACPI_LV_EXEC", ACPI_LV_EXEC}, 1846 {"ACPI_LV_NAMES", ACPI_LV_NAMES}, 1847 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION}, 1848 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD}, 1849 {"ACPI_LV_TABLES", ACPI_LV_TABLES}, 1850 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS}, 1851 {"ACPI_LV_VALUES", ACPI_LV_VALUES}, 1852 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS}, 1853 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS}, 1854 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES}, 1855 {"ACPI_LV_IO", ACPI_LV_IO}, 1856 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS}, 1857 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS}, 1858 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE}, 1859 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX}, 1860 {"ACPI_LV_INIT", ACPI_LV_INIT}, 1861 {"ACPI_LV_ALL", ACPI_LV_ALL}, 1862 {"ACPI_DB_AML_DISASSEMBLE", ACPI_DB_AML_DISASSEMBLE}, 1863 {"ACPI_DB_VERBOSE_INFO", ACPI_DB_VERBOSE_INFO}, 1864 {"ACPI_DB_FULL_TABLES", ACPI_DB_FULL_TABLES}, 1865 {"ACPI_DB_EVENTS", ACPI_DB_EVENTS}, 1866 {"ACPI_DB_VERBOSE", ACPI_DB_VERBOSE}, 1867 {NULL, 0} 1868 }; 1869 1870 static void 1871 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag) 1872 { 1873 char *ep; 1874 int i, l; 1875 int set; 1876 1877 while (*cp) { 1878 if (isspace(*cp)) { 1879 cp++; 1880 continue; 1881 } 1882 ep = cp; 1883 while (*ep && !isspace(*ep)) 1884 ep++; 1885 if (*cp == '!') { 1886 set = 0; 1887 cp++; 1888 if (cp == ep) 1889 continue; 1890 } else { 1891 set = 1; 1892 } 1893 l = ep - cp; 1894 for (i = 0; tag[i].name != NULL; i++) { 1895 if (!strncmp(cp, tag[i].name, l)) { 1896 if (set) { 1897 *flag |= tag[i].value; 1898 } else { 1899 *flag &= ~tag[i].value; 1900 } 1901 printf("ACPI_DEBUG: set '%s'\n", tag[i].name); 1902 } 1903 } 1904 cp = ep; 1905 } 1906 } 1907 1908 static void 1909 acpi_set_debugging(void *junk) 1910 { 1911 char *cp; 1912 1913 AcpiDbgLayer = 0; 1914 AcpiDbgLevel = 0; 1915 if ((cp = getenv("debug.acpi.layer")) != NULL) { 1916 acpi_parse_debug(cp, &dbg_layer[0], &AcpiDbgLayer); 1917 freeenv(cp); 1918 } 1919 if ((cp = getenv("debug.acpi.level")) != NULL) { 1920 acpi_parse_debug(cp, &dbg_level[0], &AcpiDbgLevel); 1921 freeenv(cp); 1922 } 1923 1924 printf("ACPI debug layer 0x%x debug level 0x%x\n", AcpiDbgLayer, AcpiDbgLevel); 1925 } 1926 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging, NULL); 1927 #endif 1928 1929 static int 1930 acpi_pm_func(u_long cmd, void *arg, ...) 1931 { 1932 int state, acpi_state; 1933 int error; 1934 struct acpi_softc *sc; 1935 va_list ap; 1936 1937 error = 0; 1938 switch (cmd) { 1939 case POWER_CMD_SUSPEND: 1940 sc = (struct acpi_softc *)arg; 1941 if (sc == NULL) { 1942 error = EINVAL; 1943 goto out; 1944 } 1945 1946 va_start(ap, arg); 1947 state = va_arg(ap, int); 1948 va_end(ap); 1949 1950 switch (state) { 1951 case POWER_SLEEP_STATE_STANDBY: 1952 acpi_state = sc->acpi_standby_sx; 1953 break; 1954 case POWER_SLEEP_STATE_SUSPEND: 1955 acpi_state = sc->acpi_suspend_sx; 1956 break; 1957 case POWER_SLEEP_STATE_HIBERNATE: 1958 acpi_state = ACPI_STATE_S4; 1959 break; 1960 default: 1961 error = EINVAL; 1962 goto out; 1963 } 1964 1965 acpi_SetSleepState(sc, acpi_state); 1966 break; 1967 1968 default: 1969 error = EINVAL; 1970 goto out; 1971 } 1972 1973 out: 1974 return (error); 1975 } 1976 1977 static void 1978 acpi_pm_register(void *arg) 1979 { 1980 1981 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL); 1982 } 1983 1984 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0); 1985 1986