acpi.c revision 111750
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: head/sys/dev/acpica/acpi.c 111750 2003-03-02 18:47:38Z phk $ 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/fcntl.h> 37#include <sys/malloc.h> 38#include <sys/bus.h> 39#include <sys/conf.h> 40#include <sys/ioccom.h> 41#include <sys/reboot.h> 42#include <sys/sysctl.h> 43#include <sys/ctype.h> 44#include <sys/linker.h> 45#include <sys/power.h> 46 47#include <machine/clock.h> 48#include <machine/resource.h> 49 50#include <isa/isavar.h> 51 52#include "acpi.h" 53 54#include <dev/acpica/acpica_support.h> 55 56#include <dev/acpica/acpivar.h> 57#include <dev/acpica/acpiio.h> 58 59MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices"); 60 61/* 62 * Hooks for the ACPI CA debugging infrastructure 63 */ 64#define _COMPONENT ACPI_BUS 65ACPI_MODULE_NAME("ACPI") 66 67/* 68 * Character device 69 */ 70 71static d_open_t acpiopen; 72static d_close_t acpiclose; 73static d_ioctl_t acpiioctl; 74 75#define CDEV_MAJOR 152 76static struct cdevsw acpi_cdevsw = { 77 /* open */ acpiopen, 78 /* close */ acpiclose, 79 /* read */ noread, 80 /* write */ nowrite, 81 /* ioctl */ acpiioctl, 82 /* poll */ nopoll, 83 /* mmap */ nommap, 84 /* strategy */ nostrategy, 85 /* name */ "acpi", 86 /* maj */ CDEV_MAJOR, 87 /* dump */ nodump, 88 /* psize */ nopsize, 89 /* flags */ 0 90}; 91 92static const char* sleep_state_names[] = { 93 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"}; 94 95/* this has to be static, as the softc is gone when we need it */ 96static int acpi_off_state = ACPI_STATE_S5; 97 98#if __FreeBSD_version >= 500000 99struct mtx acpi_mutex; 100#endif 101 102static int acpi_modevent(struct module *mod, int event, void *junk); 103static void acpi_identify(driver_t *driver, device_t parent); 104static int acpi_probe(device_t dev); 105static int acpi_attach(device_t dev); 106static device_t acpi_add_child(device_t bus, int order, const char *name, int unit); 107static int acpi_print_child(device_t bus, device_t child); 108static int acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result); 109static int acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value); 110static int acpi_set_resource(device_t dev, device_t child, int type, int rid, u_long start, 111 u_long count); 112static int acpi_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, 113 u_long *countp); 114static struct resource *acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, 115 u_long start, u_long end, u_long count, u_int flags); 116static int acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r); 117static u_int32_t acpi_isa_get_logicalid(device_t dev); 118static int acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids); 119 120static void acpi_probe_children(device_t bus); 121static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status); 122 123static void acpi_shutdown_pre_sync(void *arg, int howto); 124static void acpi_shutdown_final(void *arg, int howto); 125 126static void acpi_enable_fixed_events(struct acpi_softc *sc); 127 128static void acpi_system_eventhandler_sleep(void *arg, int state); 129static void acpi_system_eventhandler_wakeup(void *arg, int state); 130static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); 131 132static int acpi_pm_func(u_long cmd, void *arg, ...); 133 134static device_method_t acpi_methods[] = { 135 /* Device interface */ 136 DEVMETHOD(device_identify, acpi_identify), 137 DEVMETHOD(device_probe, acpi_probe), 138 DEVMETHOD(device_attach, acpi_attach), 139 DEVMETHOD(device_shutdown, bus_generic_shutdown), 140 DEVMETHOD(device_suspend, bus_generic_suspend), 141 DEVMETHOD(device_resume, bus_generic_resume), 142 143 /* Bus interface */ 144 DEVMETHOD(bus_add_child, acpi_add_child), 145 DEVMETHOD(bus_print_child, acpi_print_child), 146 DEVMETHOD(bus_read_ivar, acpi_read_ivar), 147 DEVMETHOD(bus_write_ivar, acpi_write_ivar), 148 DEVMETHOD(bus_set_resource, acpi_set_resource), 149 DEVMETHOD(bus_get_resource, acpi_get_resource), 150 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource), 151 DEVMETHOD(bus_release_resource, acpi_release_resource), 152 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 153 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 154 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 155 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 156 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 157 158 /* ISA emulation */ 159 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe), 160 161 {0, 0} 162}; 163 164static driver_t acpi_driver = { 165 "acpi", 166 acpi_methods, 167 sizeof(struct acpi_softc), 168}; 169 170static devclass_t acpi_devclass; 171DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0); 172MODULE_VERSION(acpi, 100); 173 174SYSCTL_INT(_debug, OID_AUTO, acpi_debug_layer, CTLFLAG_RW, &AcpiDbgLayer, 0, ""); 175SYSCTL_INT(_debug, OID_AUTO, acpi_debug_level, CTLFLAG_RW, &AcpiDbgLevel, 0, ""); 176static int acpi_ca_version = ACPI_CA_VERSION; 177SYSCTL_INT(_debug, OID_AUTO, acpi_ca_version, CTLFLAG_RD, &acpi_ca_version, 0, ""); 178 179/* 180 * ACPI can only be loaded as a module by the loader; activating it after 181 * system bootstrap time is not useful, and can be fatal to the system. 182 * It also cannot be unloaded, since the entire system bus heirarchy hangs off it. 183 */ 184static int 185acpi_modevent(struct module *mod, int event, void *junk) 186{ 187 switch(event) { 188 case MOD_LOAD: 189 if (!cold) { 190 printf("The ACPI driver cannot be loaded after boot.\n"); 191 return(EPERM); 192 } 193 break; 194 case MOD_UNLOAD: 195 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI) 196 return(EBUSY); 197 break; 198 default: 199 break; 200 } 201 return(0); 202} 203 204/* 205 * Detect ACPI, perform early initialisation 206 */ 207static void 208acpi_identify(driver_t *driver, device_t parent) 209{ 210 device_t child; 211 int error; 212#ifdef ACPI_DEBUGGER 213 char *debugpoint; 214#endif 215 216 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 217 218 if (!cold) 219 return_VOID; 220 221 /* 222 * Check that we haven't been disabled with a hint. 223 */ 224 if (!resource_int_value("acpi", 0, "disabled", &error) && 225 (error != 0)) 226 return_VOID; 227 228 /* 229 * Make sure we're not being doubly invoked. 230 */ 231 if (device_find_child(parent, "acpi", 0) != NULL) 232 return_VOID; 233 234#if __FreeBSD_version >= 500000 235 /* initialise the ACPI mutex */ 236 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF); 237#endif 238 239 /* 240 * Start up the ACPI CA subsystem. 241 */ 242#ifdef ACPI_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 ACPI_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_FAILURE(error = AcpiLoadTables())) { 264 printf("ACPI: table load failed: %s\n", AcpiFormatException(error)); 265 return_VOID; 266 } 267 268 /* 269 * Attach the actual ACPI device. 270 */ 271 if ((child = BUS_ADD_CHILD(parent, 0, "acpi", 0)) == NULL) { 272 device_printf(parent, "ACPI: could not attach\n"); 273 return_VOID; 274 } 275} 276 277/* 278 * Fetch some descriptive data from ACPI to put in our attach message 279 */ 280static int 281acpi_probe(device_t dev) 282{ 283 ACPI_TABLE_HEADER th; 284 char buf[20]; 285 ACPI_STATUS status; 286 int error; 287 ACPI_LOCK_DECL; 288 289 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 290 291 if (power_pm_get_type() != POWER_PM_TYPE_NONE && 292 power_pm_get_type() != POWER_PM_TYPE_ACPI) { 293 device_printf(dev, "Other PM system enabled.\n"); 294 return_VALUE(ENXIO); 295 } 296 297 ACPI_LOCK; 298 299 if (ACPI_FAILURE(status = AcpiGetTableHeader(ACPI_TABLE_XSDT, 1, &th))) { 300 device_printf(dev, "couldn't get XSDT header: %s\n", AcpiFormatException(status)); 301 error = ENXIO; 302 } else { 303 sprintf(buf, "%.6s %.8s", th.OemId, th.OemTableId); 304 device_set_desc_copy(dev, buf); 305 error = 0; 306 } 307 ACPI_UNLOCK; 308 return_VALUE(error); 309} 310 311static int 312acpi_attach(device_t dev) 313{ 314 struct acpi_softc *sc; 315 ACPI_STATUS status; 316 int error; 317 UINT32 flags; 318 char *env; 319#ifdef ACPI_DEBUGGER 320 char *debugpoint; 321#endif 322 ACPI_LOCK_DECL; 323 324 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 325 ACPI_LOCK; 326 sc = device_get_softc(dev); 327 bzero(sc, sizeof(*sc)); 328 sc->acpi_dev = dev; 329 330#ifdef ACPI_DEBUGGER 331 debugpoint = getenv("debug.acpi.debugger"); 332 if (debugpoint) { 333 if (!strcmp(debugpoint, "spaces")) 334 acpi_EnterDebugger(); 335 freeenv(debugpoint); 336 } 337#endif 338 339 /* 340 * Install the default address space handlers. 341 */ 342 error = ENXIO; 343 if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 344 ACPI_ADR_SPACE_SYSTEM_MEMORY, 345 ACPI_DEFAULT_HANDLER, 346 NULL, NULL))) { 347 device_printf(dev, "could not initialise SystemMemory handler: %s\n", AcpiFormatException(status)); 348 goto out; 349 } 350 if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 351 ACPI_ADR_SPACE_SYSTEM_IO, 352 ACPI_DEFAULT_HANDLER, 353 NULL, NULL))) { 354 device_printf(dev, "could not initialise SystemIO handler: %s\n", AcpiFormatException(status)); 355 goto out; 356 } 357 if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 358 ACPI_ADR_SPACE_PCI_CONFIG, 359 ACPI_DEFAULT_HANDLER, 360 NULL, NULL))) { 361 device_printf(dev, "could not initialise PciConfig handler: %s\n", AcpiFormatException(status)); 362 goto out; 363 } 364 365 /* 366 * Bring ACPI fully online. 367 * 368 * Note that some systems (specifically, those with namespace evaluation issues 369 * that require the avoidance of parts of the namespace) must avoid running _INI 370 * and _STA on everything, as well as dodging the final object init pass. 371 * 372 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT). 373 * 374 * XXX We should arrange for the object init pass after we have attached all our 375 * child devices, but on many systems it works here. 376 */ 377#ifdef ACPI_DEBUGGER 378 debugpoint = getenv("debug.acpi.debugger"); 379 if (debugpoint) { 380 if (!strcmp(debugpoint, "enable")) 381 acpi_EnterDebugger(); 382 freeenv(debugpoint); 383 } 384#endif 385 flags = 0; 386 if (testenv("debug.acpi.avoid")) 387 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; 388 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) { 389 device_printf(dev, "could not enable ACPI: %s\n", AcpiFormatException(status)); 390 goto out; 391 } 392 393 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) { 394 device_printf(dev, "could not initialize ACPI objects: %s\n", AcpiFormatException(status)); 395 goto out; 396 } 397 398 /* 399 * Setup our sysctl tree. 400 * 401 * XXX: This doesn't check to make sure that none of these fail. 402 */ 403 sysctl_ctx_init(&sc->acpi_sysctl_ctx); 404 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx, 405 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, 406 device_get_name(dev), CTLFLAG_RD, 0, ""); 407 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 408 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW, 409 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); 410 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 411 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW, 412 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); 413 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 414 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW, 415 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", ""); 416 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 417 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW, 418 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", ""); 419 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 420 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW, 421 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", ""); 422 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 423 OID_AUTO, "sleep_delay", CTLFLAG_RD | CTLFLAG_RW, 424 &sc->acpi_sleep_delay, 0, "sleep delay"); 425 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 426 OID_AUTO, "s4bios", CTLFLAG_RD | CTLFLAG_RW, 427 &sc->acpi_s4bios, 0, "S4BIOS mode"); 428 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 429 OID_AUTO, "verbose", CTLFLAG_RD | CTLFLAG_RW, 430 &sc->acpi_verbose, 0, "verbose mode"); 431 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 432 OID_AUTO, "disable_on_poweroff", CTLFLAG_RD | CTLFLAG_RW, 433 &sc->acpi_disable_on_poweroff, 0, "ACPI subsystem disable on poweroff"); 434 sc->acpi_disable_on_poweroff = 1; 435 sc->acpi_sleep_delay = 0; 436 sc->acpi_s4bios = 1; 437 if (bootverbose) 438 sc->acpi_verbose = 1; 439 if ((env = getenv("hw.acpi.verbose")) && strcmp(env, "0")) { 440 sc->acpi_verbose = 1; 441 freeenv(env); 442 } 443 444 /* 445 * Dispatch the default sleep state to devices. 446 * TBD: should be configured from userland policy manager. 447 */ 448 sc->acpi_power_button_sx = ACPI_POWER_BUTTON_DEFAULT_SX; 449 sc->acpi_sleep_button_sx = ACPI_SLEEP_BUTTON_DEFAULT_SX; 450 sc->acpi_lid_switch_sx = ACPI_LID_SWITCH_DEFAULT_SX; 451 sc->acpi_standby_sx = ACPI_STATE_S1; 452 sc->acpi_suspend_sx = ACPI_STATE_S3; 453 454 acpi_enable_fixed_events(sc); 455 456 /* 457 * Scan the namespace and attach/initialise children. 458 */ 459#ifdef ACPI_DEBUGGER 460 debugpoint = getenv("debug.acpi.debugger"); 461 if (debugpoint) { 462 if (!strcmp(debugpoint, "probe")) 463 acpi_EnterDebugger(); 464 freeenv(debugpoint); 465 } 466#endif 467 468 /* 469 * Register our shutdown handlers 470 */ 471 EVENTHANDLER_REGISTER(shutdown_pre_sync, acpi_shutdown_pre_sync, sc, SHUTDOWN_PRI_LAST); 472 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc, SHUTDOWN_PRI_LAST); 473 474 /* 475 * Register our acpi event handlers. 476 * XXX should be configurable eg. via userland policy manager. 477 */ 478 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep, sc, ACPI_EVENT_PRI_LAST); 479 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup, sc, ACPI_EVENT_PRI_LAST); 480 481 /* 482 * Flag our initial states. 483 */ 484 sc->acpi_enabled = 1; 485 sc->acpi_sstate = ACPI_STATE_S0; 486 sc->acpi_sleep_disabled = 0; 487 488 /* 489 * Create the control device 490 */ 491 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644, 492 "acpi"); 493 sc->acpi_dev_t->si_drv1 = sc; 494 495#ifdef ACPI_DEBUGGER 496 debugpoint = getenv("debug.acpi.debugger"); 497 if (debugpoint) { 498 if (!strcmp(debugpoint, "running")) 499 acpi_EnterDebugger(); 500 freeenv(debugpoint); 501 } 502#endif 503 504#ifdef ACPI_USE_THREADS 505 if ((error = acpi_task_thread_init())) { 506 goto out; 507 } 508#endif 509 510 if ((error = acpi_machdep_init(dev))) { 511 goto out; 512 } 513 514 /* Register ACPI again to pass the correct argument of pm_func. */ 515 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc); 516 517 if (!acpi_disabled("bus")) 518 acpi_probe_children(dev); 519 520 error = 0; 521 522 out: 523 ACPI_UNLOCK; 524 return_VALUE(error); 525} 526 527/* 528 * Handle a new device being added 529 */ 530static device_t 531acpi_add_child(device_t bus, int order, const char *name, int unit) 532{ 533 struct acpi_device *ad; 534 device_t child; 535 536 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT)) == NULL) 537 return(NULL); 538 bzero(ad, sizeof(*ad)); 539 540 resource_list_init(&ad->ad_rl); 541 542 child = device_add_child_ordered(bus, order, name, unit); 543 if (child != NULL) 544 device_set_ivars(child, ad); 545 return(child); 546} 547 548static int 549acpi_print_child(device_t bus, device_t child) 550{ 551 struct acpi_device *adev = device_get_ivars(child); 552 struct resource_list *rl = &adev->ad_rl; 553 int retval = 0; 554 555 retval += bus_print_child_header(bus, child); 556 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx"); 557 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx"); 558 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 559 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld"); 560 retval += bus_print_child_footer(bus, child); 561 562 return(retval); 563} 564 565 566/* 567 * Handle per-device ivars 568 */ 569static int 570acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) 571{ 572 struct acpi_device *ad; 573 574 if ((ad = device_get_ivars(child)) == NULL) { 575 printf("device has no ivars\n"); 576 return(ENOENT); 577 } 578 579 switch(index) { 580 /* ACPI ivars */ 581 case ACPI_IVAR_HANDLE: 582 *(ACPI_HANDLE *)result = ad->ad_handle; 583 break; 584 case ACPI_IVAR_MAGIC: 585 *(int *)result = ad->ad_magic; 586 break; 587 case ACPI_IVAR_PRIVATE: 588 *(void **)result = ad->ad_private; 589 break; 590 591 /* ISA compatibility */ 592 case ISA_IVAR_VENDORID: 593 case ISA_IVAR_SERIAL: 594 case ISA_IVAR_COMPATID: 595 *(int *)result = -1; 596 break; 597 598 case ISA_IVAR_LOGICALID: 599 *(int *)result = acpi_isa_get_logicalid(child); 600 break; 601 602 default: 603 return(ENOENT); 604 } 605 return(0); 606} 607 608static int 609acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value) 610{ 611 struct acpi_device *ad; 612 613 if ((ad = device_get_ivars(child)) == NULL) { 614 printf("device has no ivars\n"); 615 return(ENOENT); 616 } 617 618 switch(index) { 619 /* ACPI ivars */ 620 case ACPI_IVAR_HANDLE: 621 ad->ad_handle = (ACPI_HANDLE)value; 622 break; 623 case ACPI_IVAR_MAGIC: 624 ad->ad_magic = (int )value; 625 break; 626 case ACPI_IVAR_PRIVATE: 627 ad->ad_private = (void *)value; 628 break; 629 630 default: 631 panic("bad ivar write request (%d)", index); 632 return(ENOENT); 633 } 634 return(0); 635} 636 637/* 638 * Handle child resource allocation/removal 639 */ 640static int 641acpi_set_resource(device_t dev, device_t child, int type, int rid, u_long start, u_long count) 642{ 643 struct acpi_device *ad = device_get_ivars(child); 644 struct resource_list *rl = &ad->ad_rl; 645 646 resource_list_add(rl, type, rid, start, start + count -1, count); 647 648 return(0); 649} 650 651static int 652acpi_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, u_long *countp) 653{ 654 struct acpi_device *ad = device_get_ivars(child); 655 struct resource_list *rl = &ad->ad_rl; 656 struct resource_list_entry *rle; 657 658 rle = resource_list_find(rl, type, rid); 659 if (!rle) 660 return(ENOENT); 661 662 if (startp) 663 *startp = rle->start; 664 if (countp) 665 *countp = rle->count; 666 667 return(0); 668} 669 670static struct resource * 671acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, 672 u_long start, u_long end, u_long count, u_int flags) 673{ 674 struct acpi_device *ad = device_get_ivars(child); 675 struct resource_list *rl = &ad->ad_rl; 676 677 return(resource_list_alloc(rl, bus, child, type, rid, start, end, count, flags)); 678} 679 680static int 681acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r) 682{ 683 struct acpi_device *ad = device_get_ivars(child); 684 struct resource_list *rl = &ad->ad_rl; 685 686 return(resource_list_release(rl, bus, child, type, rid, r)); 687} 688 689/* 690 * Handle ISA-like devices probing for a PnP ID to match. 691 */ 692#define PNP_EISAID(s) \ 693 ((((s[0] - '@') & 0x1f) << 2) \ 694 | (((s[1] - '@') & 0x18) >> 3) \ 695 | (((s[1] - '@') & 0x07) << 13) \ 696 | (((s[2] - '@') & 0x1f) << 8) \ 697 | (PNP_HEXTONUM(s[4]) << 16) \ 698 | (PNP_HEXTONUM(s[3]) << 20) \ 699 | (PNP_HEXTONUM(s[6]) << 24) \ 700 | (PNP_HEXTONUM(s[5]) << 28)) 701 702static u_int32_t 703acpi_isa_get_logicalid(device_t dev) 704{ 705 ACPI_HANDLE h; 706 ACPI_DEVICE_INFO devinfo; 707 ACPI_STATUS error; 708 u_int32_t pnpid; 709 ACPI_LOCK_DECL; 710 711 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 712 713 pnpid = 0; 714 ACPI_LOCK; 715 716 /* fetch and validate the HID */ 717 if ((h = acpi_get_handle(dev)) == NULL) 718 goto out; 719 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 720 goto out; 721 if (!(devinfo.Valid & ACPI_VALID_HID)) 722 goto out; 723 724 pnpid = PNP_EISAID(devinfo.HardwareId); 725out: 726 ACPI_UNLOCK; 727 return_VALUE(pnpid); 728} 729 730static int 731acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids) 732{ 733 int result; 734 u_int32_t pnpid; 735 736 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 737 738 /* 739 * ISA-style drivers attached to ACPI may persist and 740 * probe manually if we return ENOENT. We never want 741 * that to happen, so don't ever return it. 742 */ 743 result = ENXIO; 744 745 /* scan the supplied IDs for a match */ 746 pnpid = acpi_isa_get_logicalid(child); 747 while (ids && ids->ip_id) { 748 if (pnpid == ids->ip_id) { 749 result = 0; 750 goto out; 751 } 752 ids++; 753 } 754 out: 755 return_VALUE(result); 756} 757 758/* 759 * Scan relevant portions of the ACPI namespace and attach child devices. 760 * 761 * Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and \_SB_ scopes, 762 * and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec. 763 */ 764static void 765acpi_probe_children(device_t bus) 766{ 767 ACPI_HANDLE parent; 768 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL}; 769 int i; 770 771 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 772 ACPI_ASSERTLOCK; 773 774 /* 775 * Create any static children by calling device identify methods. 776 */ 777 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n")); 778 bus_generic_probe(bus); 779 780 /* 781 * Scan the namespace and insert placeholders for all the devices that 782 * we find. 783 * 784 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because 785 * we want to create nodes for all devices, not just those that are currently 786 * present. (This assumes that we don't want to create/remove devices as they 787 * appear, which might be smarter.) 788 */ 789 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n")); 790 for (i = 0; scopes[i] != NULL; i++) 791 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent))) 792 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, acpi_probe_child, bus, NULL); 793 794 /* 795 * Scan all of the child devices we have created and let them probe/attach. 796 */ 797 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n")); 798 bus_generic_attach(bus); 799 800 /* 801 * Some of these children may have attached others as part of their attach 802 * process (eg. the root PCI bus driver), so rescan. 803 */ 804 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n")); 805 bus_generic_attach(bus); 806 807 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n")); 808 return_VOID; 809} 810 811/* 812 * Evaluate a child device and determine whether we might attach a device to 813 * it. 814 */ 815static ACPI_STATUS 816acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 817{ 818 ACPI_OBJECT_TYPE type; 819 device_t child, bus = (device_t)context; 820 821 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 822 823 /* 824 * Skip this device if we think we'll have trouble with it. 825 */ 826 if (acpi_avoid(handle)) 827 return_ACPI_STATUS(AE_OK); 828 829 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) { 830 switch(type) { 831 case ACPI_TYPE_DEVICE: 832 case ACPI_TYPE_PROCESSOR: 833 case ACPI_TYPE_THERMAL: 834 case ACPI_TYPE_POWER: 835 if (acpi_disabled("children")) 836 break; 837 /* 838 * Create a placeholder device for this node. Sort the placeholder 839 * so that the probe/attach passes will run breadth-first. 840 */ 841 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", acpi_name(handle))); 842 child = BUS_ADD_CHILD(bus, level * 10, NULL, -1); 843 if (child == NULL) 844 break; 845 acpi_set_handle(child, handle); 846 847 /* 848 * Check that the device is present. If it's not present, 849 * leave it disabled (so that we have a device_t attached to 850 * the handle, but we don't probe it). 851 */ 852 if ((type == ACPI_TYPE_DEVICE) && (!acpi_DeviceIsPresent(child))) { 853 device_disable(child); 854 break; 855 } 856 857 /* 858 * Get the device's resource settings and attach them. 859 * Note that if the device has _PRS but no _CRS, we need 860 * to decide when it's appropriate to try to configure the 861 * device. Ignore the return value here; it's OK for the 862 * device not to have any resources. 863 */ 864 acpi_parse_resources(child, handle, &acpi_res_parse_set); 865 866 /* if we're debugging, probe/attach now rather than later */ 867 ACPI_DEBUG_EXEC(device_probe_and_attach(child)); 868 break; 869 } 870 } 871 return_ACPI_STATUS(AE_OK); 872} 873 874static void 875acpi_shutdown_pre_sync(void *arg, int howto) 876{ 877 878 struct acpi_softc *sc = arg; 879 880 ACPI_ASSERTLOCK; 881 882 /* 883 * Disable all ACPI events before soft off, otherwise the system 884 * will be turned on again on some laptops. 885 * 886 * XXX this should probably be restricted to masking some events just 887 * before powering down, since we may still need ACPI during the 888 * shutdown process. 889 */ 890 if (sc->acpi_disable_on_poweroff) 891 acpi_Disable(sc); 892} 893 894static void 895acpi_shutdown_final(void *arg, int howto) 896{ 897 ACPI_STATUS status; 898 899 ACPI_ASSERTLOCK; 900 901 if (howto & RB_POWEROFF) { 902 printf("Power system off using ACPI...\n"); 903 if (ACPI_FAILURE(status = AcpiEnterSleepStatePrep(acpi_off_state))) { 904 printf("AcpiEnterSleepStatePrep failed - %s\n", 905 AcpiFormatException(status)); 906 return; 907 } 908 if (ACPI_FAILURE(status = AcpiEnterSleepState(acpi_off_state))) { 909 printf("ACPI power-off failed - %s\n", AcpiFormatException(status)); 910 } else { 911 DELAY(1000000); 912 printf("ACPI power-off failed - timeout\n"); 913 } 914 } else { 915 printf("Terminate ACPI\n"); 916 AcpiTerminate(); 917 } 918} 919 920static void 921acpi_enable_fixed_events(struct acpi_softc *sc) 922{ 923 static int first_time = 1; 924#define MSGFORMAT "%s button is handled as a fixed feature programming model.\n" 925 926 ACPI_ASSERTLOCK; 927 928 /* Enable and clear fixed events and install handlers. */ 929 if ((AcpiGbl_FADT != NULL) && (AcpiGbl_FADT->PwrButton == 0)) { 930 AcpiEnableEvent(ACPI_EVENT_POWER_BUTTON, ACPI_EVENT_FIXED, 0); 931 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON, ACPI_EVENT_FIXED); 932 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON, 933 acpi_eventhandler_power_button_for_sleep, sc); 934 if (first_time) { 935 device_printf(sc->acpi_dev, MSGFORMAT, "power"); 936 } 937 } 938 if ((AcpiGbl_FADT != NULL) && (AcpiGbl_FADT->SleepButton == 0)) { 939 AcpiEnableEvent(ACPI_EVENT_SLEEP_BUTTON, ACPI_EVENT_FIXED, 0); 940 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON, ACPI_EVENT_FIXED); 941 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON, 942 acpi_eventhandler_sleep_button_for_sleep, sc); 943 if (first_time) { 944 device_printf(sc->acpi_dev, MSGFORMAT, "sleep"); 945 } 946 } 947 948 first_time = 0; 949} 950 951/* 952 * Returns true if the device is actually present and should 953 * be attached to. This requires the present, enabled, UI-visible 954 * and diagnostics-passed bits to be set. 955 */ 956BOOLEAN 957acpi_DeviceIsPresent(device_t dev) 958{ 959 ACPI_HANDLE h; 960 ACPI_DEVICE_INFO devinfo; 961 ACPI_STATUS error; 962 963 ACPI_ASSERTLOCK; 964 965 if ((h = acpi_get_handle(dev)) == NULL) 966 return(FALSE); 967 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 968 return(FALSE); 969 /* if no _STA method, must be present */ 970 if (!(devinfo.Valid & ACPI_VALID_STA)) 971 return(TRUE); 972 /* return true for 'present' and 'functioning' */ 973 if ((devinfo.CurrentStatus & 0x9) == 0x9) 974 return(TRUE); 975 return(FALSE); 976} 977 978/* 979 * Returns true if the battery is actually present and inserted. 980 */ 981BOOLEAN 982acpi_BatteryIsPresent(device_t dev) 983{ 984 ACPI_HANDLE h; 985 ACPI_DEVICE_INFO devinfo; 986 ACPI_STATUS error; 987 988 ACPI_ASSERTLOCK; 989 990 if ((h = acpi_get_handle(dev)) == NULL) 991 return(FALSE); 992 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 993 return(FALSE); 994 /* if no _STA method, must be present */ 995 if (!(devinfo.Valid & ACPI_VALID_STA)) 996 return(TRUE); 997 /* return true for 'present' and 'functioning' */ 998 if ((devinfo.CurrentStatus & 0x19) == 0x19) 999 return(TRUE); 1000 return(FALSE); 1001} 1002 1003/* 1004 * Match a HID string against a device 1005 */ 1006BOOLEAN 1007acpi_MatchHid(device_t dev, char *hid) 1008{ 1009 ACPI_HANDLE h; 1010 ACPI_DEVICE_INFO devinfo; 1011 ACPI_STATUS error; 1012 int cid; 1013 1014 ACPI_ASSERTLOCK; 1015 1016 if (hid == NULL) 1017 return(FALSE); 1018 if ((h = acpi_get_handle(dev)) == NULL) 1019 return(FALSE); 1020 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 1021 return(FALSE); 1022 if ((devinfo.Valid & ACPI_VALID_HID) && !strcmp(hid, devinfo.HardwareId)) 1023 return(TRUE); 1024 if (ACPI_FAILURE(error = acpi_EvaluateInteger(h, "_CID", &cid))) 1025 return(FALSE); 1026 if (cid == PNP_EISAID(hid)) 1027 return(TRUE); 1028 return(FALSE); 1029} 1030 1031/* 1032 * Return the handle of a named object within our scope, ie. that of (parent) 1033 * or one if its parents. 1034 */ 1035ACPI_STATUS 1036acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result) 1037{ 1038 ACPI_HANDLE r; 1039 ACPI_STATUS status; 1040 1041 ACPI_ASSERTLOCK; 1042 1043 /* walk back up the tree to the root */ 1044 for (;;) { 1045 if (ACPI_SUCCESS(status = AcpiGetHandle(parent, path, &r))) { 1046 *result = r; 1047 return(AE_OK); 1048 } 1049 if (status != AE_NOT_FOUND) 1050 return(AE_OK); 1051 if (ACPI_FAILURE(AcpiGetParent(parent, &r))) 1052 return(AE_NOT_FOUND); 1053 parent = r; 1054 } 1055} 1056 1057/* 1058 * Allocate a buffer with a preset data size. 1059 */ 1060ACPI_BUFFER * 1061acpi_AllocBuffer(int size) 1062{ 1063 ACPI_BUFFER *buf; 1064 1065 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL) 1066 return(NULL); 1067 buf->Length = size; 1068 buf->Pointer = (void *)(buf + 1); 1069 return(buf); 1070} 1071 1072/* 1073 * Evaluate a path that should return an integer. 1074 */ 1075ACPI_STATUS 1076acpi_EvaluateInteger(ACPI_HANDLE handle, char *path, int *number) 1077{ 1078 ACPI_STATUS error; 1079 ACPI_BUFFER buf; 1080 ACPI_OBJECT param; 1081 1082 ACPI_ASSERTLOCK; 1083 1084 if (handle == NULL) 1085 handle = ACPI_ROOT_OBJECT; 1086 1087 /* 1088 * Assume that what we've been pointed at is an Integer object, or 1089 * a method that will return an Integer. 1090 */ 1091 buf.Pointer = ¶m; 1092 buf.Length = sizeof(param); 1093 if (ACPI_SUCCESS(error = AcpiEvaluateObject(handle, path, NULL, &buf))) { 1094 if (param.Type == ACPI_TYPE_INTEGER) { 1095 *number = param.Integer.Value; 1096 } else { 1097 error = AE_TYPE; 1098 } 1099 } 1100 1101 /* 1102 * In some applications, a method that's expected to return an Integer 1103 * may instead return a Buffer (probably to simplify some internal 1104 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer, 1105 * convert it into an Integer as best we can. 1106 * 1107 * This is a hack. 1108 */ 1109 if (error == AE_BUFFER_OVERFLOW) { 1110 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) { 1111 error = AE_NO_MEMORY; 1112 } else { 1113 if (ACPI_SUCCESS(error = AcpiEvaluateObject(handle, path, NULL, &buf))) { 1114 error = acpi_ConvertBufferToInteger(&buf, number); 1115 } 1116 } 1117 AcpiOsFree(buf.Pointer); 1118 } 1119 return(error); 1120} 1121 1122ACPI_STATUS 1123acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, int *number) 1124{ 1125 ACPI_OBJECT *p; 1126 int i; 1127 1128 p = (ACPI_OBJECT *)bufp->Pointer; 1129 if (p->Type == ACPI_TYPE_INTEGER) { 1130 *number = p->Integer.Value; 1131 return(AE_OK); 1132 } 1133 if (p->Type != ACPI_TYPE_BUFFER) 1134 return(AE_TYPE); 1135 if (p->Buffer.Length > sizeof(int)) 1136 return(AE_BAD_DATA); 1137 *number = 0; 1138 for (i = 0; i < p->Buffer.Length; i++) 1139 *number += (*(p->Buffer.Pointer + i) << (i * 8)); 1140 return(AE_OK); 1141} 1142 1143/* 1144 * Iterate over the elements of an a package object, calling the supplied 1145 * function for each element. 1146 * 1147 * XXX possible enhancement might be to abort traversal on error. 1148 */ 1149ACPI_STATUS 1150acpi_ForeachPackageObject(ACPI_OBJECT *pkg, void (* func)(ACPI_OBJECT *comp, void *arg), void *arg) 1151{ 1152 ACPI_OBJECT *comp; 1153 int i; 1154 1155 if ((pkg == NULL) || (pkg->Type != ACPI_TYPE_PACKAGE)) 1156 return(AE_BAD_PARAMETER); 1157 1158 /* iterate over components */ 1159 for (i = 0, comp = pkg->Package.Elements; i < pkg->Package.Count; i++, comp++) 1160 func(comp, arg); 1161 1162 return(AE_OK); 1163} 1164 1165/* 1166 * Find the (index)th resource object in a set. 1167 */ 1168ACPI_STATUS 1169acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp) 1170{ 1171 ACPI_RESOURCE *rp; 1172 int i; 1173 1174 rp = (ACPI_RESOURCE *)buf->Pointer; 1175 i = index; 1176 while (i-- > 0) { 1177 /* range check */ 1178 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 1179 return(AE_BAD_PARAMETER); 1180 /* check for terminator */ 1181 if ((rp->Id == ACPI_RSTYPE_END_TAG) || 1182 (rp->Length == 0)) 1183 return(AE_NOT_FOUND); 1184 rp = ACPI_RESOURCE_NEXT(rp); 1185 } 1186 if (resp != NULL) 1187 *resp = rp; 1188 return(AE_OK); 1189} 1190 1191/* 1192 * Append an ACPI_RESOURCE to an ACPI_BUFFER. 1193 * 1194 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER 1195 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible 1196 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of 1197 * resources. 1198 */ 1199#define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512 1200 1201ACPI_STATUS 1202acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res) 1203{ 1204 ACPI_RESOURCE *rp; 1205 void *newp; 1206 1207 /* 1208 * Initialise the buffer if necessary. 1209 */ 1210 if (buf->Pointer == NULL) { 1211 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE; 1212 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL) 1213 return(AE_NO_MEMORY); 1214 rp = (ACPI_RESOURCE *)buf->Pointer; 1215 rp->Id = ACPI_RSTYPE_END_TAG; 1216 rp->Length = 0; 1217 } 1218 if (res == NULL) 1219 return(AE_OK); 1220 1221 /* 1222 * Scan the current buffer looking for the terminator. 1223 * This will either find the terminator or hit the end 1224 * of the buffer and return an error. 1225 */ 1226 rp = (ACPI_RESOURCE *)buf->Pointer; 1227 for (;;) { 1228 /* range check, don't go outside the buffer */ 1229 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 1230 return(AE_BAD_PARAMETER); 1231 if ((rp->Id == ACPI_RSTYPE_END_TAG) || 1232 (rp->Length == 0)) { 1233 break; 1234 } 1235 rp = ACPI_RESOURCE_NEXT(rp); 1236 } 1237 1238 /* 1239 * Check the size of the buffer and expand if required. 1240 * 1241 * Required size is: 1242 * size of existing resources before terminator + 1243 * size of new resource and header + 1244 * size of terminator. 1245 * 1246 * Note that this loop should really only run once, unless 1247 * for some reason we are stuffing a *really* huge resource. 1248 */ 1249 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) + 1250 res->Length + ACPI_RESOURCE_LENGTH_NO_DATA + 1251 ACPI_RESOURCE_LENGTH) >= buf->Length) { 1252 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL) 1253 return(AE_NO_MEMORY); 1254 bcopy(buf->Pointer, newp, buf->Length); 1255 rp = (ACPI_RESOURCE *)((u_int8_t *)newp + 1256 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer)); 1257 AcpiOsFree(buf->Pointer); 1258 buf->Pointer = newp; 1259 buf->Length += buf->Length; 1260 } 1261 1262 /* 1263 * Insert the new resource. 1264 */ 1265 bcopy(res, rp, res->Length + ACPI_RESOURCE_LENGTH_NO_DATA); 1266 1267 /* 1268 * And add the terminator. 1269 */ 1270 rp = ACPI_RESOURCE_NEXT(rp); 1271 rp->Id = ACPI_RSTYPE_END_TAG; 1272 rp->Length = 0; 1273 1274 return(AE_OK); 1275} 1276 1277/* 1278 * Set interrupt model. 1279 */ 1280ACPI_STATUS 1281acpi_SetIntrModel(int model) 1282{ 1283 ACPI_OBJECT_LIST ArgList; 1284 ACPI_OBJECT Arg; 1285 1286 Arg.Type = ACPI_TYPE_INTEGER; 1287 Arg.Integer.Value = model; 1288 ArgList.Count = 1; 1289 ArgList.Pointer = &Arg; 1290 return (AcpiEvaluateObject(ACPI_ROOT_OBJECT, "_PIC", &ArgList, NULL)); 1291} 1292 1293#define ACPI_MINIMUM_AWAKETIME 5 1294 1295static void 1296acpi_sleep_enable(void *arg) 1297{ 1298 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0; 1299} 1300 1301/* 1302 * Set the system sleep state 1303 * 1304 * Currently we only support S1 and S5 1305 */ 1306ACPI_STATUS 1307acpi_SetSleepState(struct acpi_softc *sc, int state) 1308{ 1309 ACPI_STATUS status = AE_OK; 1310 UINT8 TypeA; 1311 UINT8 TypeB; 1312 1313 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 1314 ACPI_ASSERTLOCK; 1315 1316 if (sc->acpi_sstate != ACPI_STATE_S0) 1317 return_ACPI_STATUS(AE_BAD_PARAMETER); /* avoid reentry */ 1318 1319 if (sc->acpi_sleep_disabled) 1320 return_ACPI_STATUS(AE_OK); 1321 1322 switch (state) { 1323 case ACPI_STATE_S0: /* XXX only for testing */ 1324 if (ACPI_FAILURE(status = AcpiEnterSleepState((UINT8)state))) { 1325 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status)); 1326 } 1327 break; 1328 1329 case ACPI_STATE_S1: 1330 case ACPI_STATE_S2: 1331 case ACPI_STATE_S3: 1332 case ACPI_STATE_S4: 1333 if (ACPI_FAILURE(status = AcpiGetSleepTypeData((UINT8)state, &TypeA, &TypeB))) { 1334 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n", AcpiFormatException(status)); 1335 break; 1336 } 1337 1338 sc->acpi_sstate = state; 1339 sc->acpi_sleep_disabled = 1; 1340 1341 /* 1342 * Inform all devices that we are going to sleep. 1343 */ 1344 if (DEVICE_SUSPEND(root_bus) != 0) { 1345 /* 1346 * Re-wake the system. 1347 * 1348 * XXX note that a better two-pass approach with a 'veto' pass 1349 * followed by a "real thing" pass would be better, but the 1350 * current bus interface does not provide for this. 1351 */ 1352 DEVICE_RESUME(root_bus); 1353 return_ACPI_STATUS(AE_ERROR); 1354 } 1355 1356 if (ACPI_FAILURE(status = AcpiEnterSleepStatePrep(state))) { 1357 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 1358 AcpiFormatException(status)); 1359 break; 1360 } 1361 1362 if (sc->acpi_sleep_delay > 0) { 1363 DELAY(sc->acpi_sleep_delay * 1000000); 1364 } 1365 1366 if (state != ACPI_STATE_S1) { 1367 acpi_sleep_machdep(sc, state); 1368 1369 /* AcpiEnterSleepState() maybe incompleted, unlock here if locked. */ 1370 if (AcpiGbl_AcpiMutexInfo[ACPI_MTX_HARDWARE].OwnerId != ACPI_MUTEX_NOT_ACQUIRED) { 1371 AcpiUtReleaseMutex(ACPI_MTX_HARDWARE); 1372 } 1373 1374 /* Re-enable ACPI hardware on wakeup from sleep state 4. */ 1375 if (state == ACPI_STATE_S4) { 1376 AcpiEnable(); 1377 } 1378 } else { 1379 if (ACPI_FAILURE(status = AcpiEnterSleepState((UINT8)state))) { 1380 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status)); 1381 break; 1382 } 1383 } 1384 AcpiLeaveSleepState((UINT8)state); 1385 DEVICE_RESUME(root_bus); 1386 sc->acpi_sstate = ACPI_STATE_S0; 1387 acpi_enable_fixed_events(sc); 1388 break; 1389 1390 case ACPI_STATE_S5: 1391 /* 1392 * Shut down cleanly and power off. This will call us back through the 1393 * shutdown handlers. 1394 */ 1395 shutdown_nice(RB_POWEROFF); 1396 break; 1397 1398 default: 1399 status = AE_BAD_PARAMETER; 1400 break; 1401 } 1402 1403 if (sc->acpi_sleep_disabled) 1404 timeout(acpi_sleep_enable, (caddr_t)sc, hz * ACPI_MINIMUM_AWAKETIME); 1405 1406 return_ACPI_STATUS(status); 1407} 1408 1409/* 1410 * Enable/Disable ACPI 1411 */ 1412ACPI_STATUS 1413acpi_Enable(struct acpi_softc *sc) 1414{ 1415 ACPI_STATUS status; 1416 u_int32_t flags; 1417 1418 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1419 ACPI_ASSERTLOCK; 1420 1421 flags = ACPI_NO_ADDRESS_SPACE_INIT | ACPI_NO_HARDWARE_INIT | 1422 ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; 1423 if (!sc->acpi_enabled) { 1424 status = AcpiEnableSubsystem(flags); 1425 } else { 1426 status = AE_OK; 1427 } 1428 if (status == AE_OK) 1429 sc->acpi_enabled = 1; 1430 return_ACPI_STATUS(status); 1431} 1432 1433ACPI_STATUS 1434acpi_Disable(struct acpi_softc *sc) 1435{ 1436 ACPI_STATUS status; 1437 1438 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1439 ACPI_ASSERTLOCK; 1440 1441 if (sc->acpi_enabled) { 1442 status = AcpiDisable(); 1443 } else { 1444 status = AE_OK; 1445 } 1446 if (status == AE_OK) 1447 sc->acpi_enabled = 0; 1448 return_ACPI_STATUS(status); 1449} 1450 1451/* 1452 * ACPI Event Handlers 1453 */ 1454 1455/* System Event Handlers (registered by EVENTHANDLER_REGISTER) */ 1456 1457static void 1458acpi_system_eventhandler_sleep(void *arg, int state) 1459{ 1460 ACPI_LOCK_DECL; 1461 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 1462 1463 ACPI_LOCK; 1464 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) 1465 acpi_SetSleepState((struct acpi_softc *)arg, state); 1466 ACPI_UNLOCK; 1467 return_VOID; 1468} 1469 1470static void 1471acpi_system_eventhandler_wakeup(void *arg, int state) 1472{ 1473 ACPI_LOCK_DECL; 1474 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 1475 1476 /* Well, what to do? :-) */ 1477 1478 ACPI_LOCK; 1479 ACPI_UNLOCK; 1480 1481 return_VOID; 1482} 1483 1484/* 1485 * ACPICA Event Handlers (FixedEvent, also called from button notify handler) 1486 */ 1487UINT32 1488acpi_eventhandler_power_button_for_sleep(void *context) 1489{ 1490 struct acpi_softc *sc = (struct acpi_softc *)context; 1491 1492 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1493 1494 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx); 1495 1496 return_VALUE(ACPI_INTERRUPT_HANDLED); 1497} 1498 1499UINT32 1500acpi_eventhandler_power_button_for_wakeup(void *context) 1501{ 1502 struct acpi_softc *sc = (struct acpi_softc *)context; 1503 1504 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1505 1506 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx); 1507 1508 return_VALUE(ACPI_INTERRUPT_HANDLED); 1509} 1510 1511UINT32 1512acpi_eventhandler_sleep_button_for_sleep(void *context) 1513{ 1514 struct acpi_softc *sc = (struct acpi_softc *)context; 1515 1516 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1517 1518 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx); 1519 1520 return_VALUE(ACPI_INTERRUPT_HANDLED); 1521} 1522 1523UINT32 1524acpi_eventhandler_sleep_button_for_wakeup(void *context) 1525{ 1526 struct acpi_softc *sc = (struct acpi_softc *)context; 1527 1528 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1529 1530 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx); 1531 1532 return_VALUE(ACPI_INTERRUPT_HANDLED); 1533} 1534 1535/* 1536 * XXX This is kinda ugly, and should not be here. 1537 */ 1538struct acpi_staticbuf { 1539 ACPI_BUFFER buffer; 1540 char data[512]; 1541}; 1542 1543char * 1544acpi_name(ACPI_HANDLE handle) 1545{ 1546 static struct acpi_staticbuf buf; 1547 1548 ACPI_ASSERTLOCK; 1549 1550 buf.buffer.Length = 512; 1551 buf.buffer.Pointer = &buf.data[0]; 1552 1553 if (ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer))) 1554 return(buf.buffer.Pointer); 1555 return("(unknown path)"); 1556} 1557 1558/* 1559 * Debugging/bug-avoidance. Avoid trying to fetch info on various 1560 * parts of the namespace. 1561 */ 1562int 1563acpi_avoid(ACPI_HANDLE handle) 1564{ 1565 char *cp, *env, *np; 1566 int len; 1567 1568 np = acpi_name(handle); 1569 if (*np == '\\') 1570 np++; 1571 if ((env = getenv("debug.acpi.avoid")) == NULL) 1572 return(0); 1573 1574 /* scan the avoid list checking for a match */ 1575 cp = env; 1576 for (;;) { 1577 while ((*cp != 0) && isspace(*cp)) 1578 cp++; 1579 if (*cp == 0) 1580 break; 1581 len = 0; 1582 while ((cp[len] != 0) && !isspace(cp[len])) 1583 len++; 1584 if (!strncmp(cp, np, len)) { 1585 freeenv(env); 1586 return(1); 1587 } 1588 cp += len; 1589 } 1590 freeenv(env); 1591 return(0); 1592} 1593 1594/* 1595 * Debugging/bug-avoidance. Disable ACPI subsystem components. 1596 */ 1597int 1598acpi_disabled(char *subsys) 1599{ 1600 char *cp, *env; 1601 int len; 1602 1603 if ((env = getenv("debug.acpi.disable")) == NULL) 1604 return(0); 1605 if (!strcmp(env, "all")) { 1606 freeenv(env); 1607 return(1); 1608 } 1609 1610 /* scan the disable list checking for a match */ 1611 cp = env; 1612 for (;;) { 1613 while ((*cp != 0) && isspace(*cp)) 1614 cp++; 1615 if (*cp == 0) 1616 break; 1617 len = 0; 1618 while ((cp[len] != 0) && !isspace(cp[len])) 1619 len++; 1620 if (!strncmp(cp, subsys, len)) { 1621 freeenv(env); 1622 return(1); 1623 } 1624 cp += len; 1625 } 1626 freeenv(env); 1627 return(0); 1628} 1629 1630/* 1631 * Device wake capability enable/disable. 1632 */ 1633void 1634acpi_device_enable_wake_capability(ACPI_HANDLE h, int enable) 1635{ 1636 ACPI_OBJECT_LIST ArgList; 1637 ACPI_OBJECT Arg; 1638 1639 /* 1640 * TBD: All Power Resources referenced by elements 2 through N 1641 * of the _PRW object are put into the ON state. 1642 */ 1643 1644 /* 1645 * enable/disable device wake function. 1646 */ 1647 1648 ArgList.Count = 1; 1649 ArgList.Pointer = &Arg; 1650 1651 Arg.Type = ACPI_TYPE_INTEGER; 1652 Arg.Integer.Value = enable; 1653 1654 (void)AcpiEvaluateObject(h, "_PSW", &ArgList, NULL); 1655} 1656 1657void 1658acpi_device_enable_wake_event(ACPI_HANDLE h) 1659{ 1660 struct acpi_softc *sc; 1661 ACPI_STATUS status; 1662 ACPI_BUFFER prw_buffer; 1663 ACPI_OBJECT *res; 1664 1665 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1666 1667 if ((sc = devclass_get_softc(acpi_devclass, 0)) == NULL) { 1668 return; 1669 } 1670 1671 /* 1672 * _PRW object is only required for devices that have the ability 1673 * to wake the system from a system sleeping state. 1674 */ 1675 prw_buffer.Length = ACPI_ALLOCATE_BUFFER; 1676 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer); 1677 if (ACPI_FAILURE(status)) { 1678 return; 1679 } 1680 1681 res = (ACPI_OBJECT *)prw_buffer.Pointer; 1682 if (res == NULL) { 1683 return; 1684 } 1685 1686 if ((res->Type != ACPI_TYPE_PACKAGE) || (res->Package.Count < 2)) { 1687 goto out; 1688 } 1689 1690 /* 1691 * The element 1 of the _PRW object: 1692 * The lowest power system sleeping state that can be entered 1693 * while still providing wake functionality. 1694 * The sleeping state being entered must be greater or equal to 1695 * the power state declared in element 1 of the _PRW object. 1696 */ 1697 if (res->Package.Elements[1].Type != ACPI_TYPE_INTEGER) { 1698 goto out; 1699 } 1700 1701 if (sc->acpi_sstate > res->Package.Elements[1].Integer.Value) { 1702 goto out; 1703 } 1704 1705 /* 1706 * The element 0 of the _PRW object: 1707 */ 1708 switch(res->Package.Elements[0].Type) { 1709 case ACPI_TYPE_INTEGER: 1710 /* 1711 * If the data type of this package element is numeric, then this 1712 * _PRW package element is the bit index in the GPEx_EN, in the 1713 * GPE blocks described in the FADT, of the enable bit that is 1714 * enabled for the wake event. 1715 */ 1716 1717 status = AcpiEnableEvent(res->Package.Elements[0].Integer.Value, 1718 ACPI_EVENT_GPE, ACPI_EVENT_WAKE_ENABLE); 1719 if (ACPI_FAILURE(status)) 1720 printf("%s: EnableEvent Failed\n", __func__); 1721 break; 1722 1723 case ACPI_TYPE_PACKAGE: 1724 /* XXX TBD */ 1725 1726 /* 1727 * If the data type of this package element is a package, then this 1728 * _PRW package element is itself a package containing two 1729 * elements. The first is an object reference to the GPE Block 1730 * device that contains the GPE that will be triggered by the wake 1731 * event. The second element is numeric and it contains the bit 1732 * index in the GPEx_EN, in the GPE Block referenced by the 1733 * first element in the package, of the enable bit that is enabled for 1734 * the wake event. 1735 * For example, if this field is a package then it is of the form: 1736 * Package() {\_SB.PCI0.ISA.GPE, 2} 1737 */ 1738 1739 break; 1740 1741 default: 1742 break; 1743 } 1744 1745out: 1746 if (prw_buffer.Pointer != NULL) 1747 AcpiOsFree(prw_buffer.Pointer); 1748 return; 1749} 1750 1751/* 1752 * Control interface. 1753 * 1754 * We multiplex ioctls for all participating ACPI devices here. Individual 1755 * drivers wanting to be accessible via /dev/acpi should use the register/deregister 1756 * interface to make their handlers visible. 1757 */ 1758struct acpi_ioctl_hook 1759{ 1760 TAILQ_ENTRY(acpi_ioctl_hook) link; 1761 u_long cmd; 1762 int (* fn)(u_long cmd, caddr_t addr, void *arg); 1763 void *arg; 1764}; 1765 1766static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks; 1767static int acpi_ioctl_hooks_initted; 1768 1769/* 1770 * Register an ioctl handler. 1771 */ 1772int 1773acpi_register_ioctl(u_long cmd, int (* fn)(u_long cmd, caddr_t addr, void *arg), void *arg) 1774{ 1775 struct acpi_ioctl_hook *hp; 1776 1777 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL) 1778 return(ENOMEM); 1779 hp->cmd = cmd; 1780 hp->fn = fn; 1781 hp->arg = arg; 1782 if (acpi_ioctl_hooks_initted == 0) { 1783 TAILQ_INIT(&acpi_ioctl_hooks); 1784 acpi_ioctl_hooks_initted = 1; 1785 } 1786 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link); 1787 return(0); 1788} 1789 1790/* 1791 * Deregister an ioctl handler. 1792 */ 1793void 1794acpi_deregister_ioctl(u_long cmd, int (* fn)(u_long cmd, caddr_t addr, void *arg)) 1795{ 1796 struct acpi_ioctl_hook *hp; 1797 1798 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) 1799 if ((hp->cmd == cmd) && (hp->fn == fn)) 1800 break; 1801 1802 if (hp != NULL) { 1803 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link); 1804 free(hp, M_ACPIDEV); 1805 } 1806} 1807 1808static int 1809acpiopen(dev_t dev, int flag, int fmt, d_thread_t *td) 1810{ 1811 return(0); 1812} 1813 1814static int 1815acpiclose(dev_t dev, int flag, int fmt, d_thread_t *td) 1816{ 1817 return(0); 1818} 1819 1820static int 1821acpiioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td) 1822{ 1823 struct acpi_softc *sc; 1824 struct acpi_ioctl_hook *hp; 1825 int error, xerror, state; 1826 ACPI_LOCK_DECL; 1827 1828 ACPI_LOCK; 1829 1830 error = state = 0; 1831 sc = dev->si_drv1; 1832 1833 /* 1834 * Scan the list of registered ioctls, looking for handlers. 1835 */ 1836 if (acpi_ioctl_hooks_initted) { 1837 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) { 1838 if (hp->cmd == cmd) { 1839 xerror = hp->fn(cmd, addr, hp->arg); 1840 if (xerror != 0) 1841 error = xerror; 1842 goto out; 1843 } 1844 } 1845 } 1846 1847 /* 1848 * Core ioctls are not permitted for non-writable user. 1849 * Currently, other ioctls just fetch information. 1850 * Not changing system behavior. 1851 */ 1852 if(!(flag & FWRITE)){ 1853 return EPERM; 1854 } 1855 1856 /* 1857 * Core system ioctls. 1858 */ 1859 switch (cmd) { 1860 case ACPIIO_ENABLE: 1861 if (ACPI_FAILURE(acpi_Enable(sc))) 1862 error = ENXIO; 1863 break; 1864 1865 case ACPIIO_DISABLE: 1866 if (ACPI_FAILURE(acpi_Disable(sc))) 1867 error = ENXIO; 1868 break; 1869 1870 case ACPIIO_SETSLPSTATE: 1871 if (!sc->acpi_enabled) { 1872 error = ENXIO; 1873 break; 1874 } 1875 state = *(int *)addr; 1876 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) { 1877 acpi_SetSleepState(sc, state); 1878 } else { 1879 error = EINVAL; 1880 } 1881 break; 1882 1883 default: 1884 if (error == 0) 1885 error = EINVAL; 1886 break; 1887 } 1888 1889out: 1890 ACPI_UNLOCK; 1891 return(error); 1892} 1893 1894static int 1895acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 1896{ 1897 char sleep_state[10]; 1898 int error; 1899 u_int new_state, old_state; 1900 1901 old_state = *(u_int *)oidp->oid_arg1; 1902 if (old_state > ACPI_S_STATES_MAX+1) { 1903 strcpy(sleep_state, "unknown"); 1904 } else { 1905 bzero(sleep_state, sizeof(sleep_state)); 1906 strncpy(sleep_state, sleep_state_names[old_state], 1907 sizeof(sleep_state_names[old_state])); 1908 } 1909 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req); 1910 if (error == 0 && req->newptr != NULL) { 1911 for (new_state = ACPI_STATE_S0; new_state <= ACPI_S_STATES_MAX+1; new_state++) { 1912 if (strncmp(sleep_state, sleep_state_names[new_state], 1913 sizeof(sleep_state)) == 0) 1914 break; 1915 } 1916 if (new_state <= ACPI_S_STATES_MAX+1) { 1917 if (new_state != old_state) { 1918 *(u_int *)oidp->oid_arg1 = new_state; 1919 } 1920 } else { 1921 error = EINVAL; 1922 } 1923 } 1924 return(error); 1925} 1926 1927#ifdef ACPI_DEBUG 1928/* 1929 * Support for parsing debug options from the kernel environment. 1930 * 1931 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers 1932 * by specifying the names of the bits in the debug.acpi.layer and 1933 * debug.acpi.level environment variables. Bits may be unset by 1934 * prefixing the bit name with !. 1935 */ 1936struct debugtag 1937{ 1938 char *name; 1939 UINT32 value; 1940}; 1941 1942static struct debugtag dbg_layer[] = { 1943 {"ACPI_UTILITIES", ACPI_UTILITIES}, 1944 {"ACPI_HARDWARE", ACPI_HARDWARE}, 1945 {"ACPI_EVENTS", ACPI_EVENTS}, 1946 {"ACPI_TABLES", ACPI_TABLES}, 1947 {"ACPI_NAMESPACE", ACPI_NAMESPACE}, 1948 {"ACPI_PARSER", ACPI_PARSER}, 1949 {"ACPI_DISPATCHER", ACPI_DISPATCHER}, 1950 {"ACPI_EXECUTER", ACPI_EXECUTER}, 1951 {"ACPI_RESOURCES", ACPI_RESOURCES}, 1952 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER}, 1953 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES}, 1954 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER}, 1955 1956 {"ACPI_BUS", ACPI_BUS}, 1957 {"ACPI_SYSTEM", ACPI_SYSTEM}, 1958 {"ACPI_POWER", ACPI_POWER}, 1959 {"ACPI_EC", ACPI_EC}, 1960 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER}, 1961 {"ACPI_BATTERY", ACPI_BATTERY}, 1962 {"ACPI_BUTTON", ACPI_BUTTON}, 1963 {"ACPI_PROCESSOR", ACPI_PROCESSOR}, 1964 {"ACPI_THERMAL", ACPI_THERMAL}, 1965 {"ACPI_FAN", ACPI_FAN}, 1966 1967 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS}, 1968 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS}, 1969 {NULL, 0} 1970}; 1971 1972static struct debugtag dbg_level[] = { 1973 {"ACPI_LV_OK", ACPI_LV_OK}, 1974 {"ACPI_LV_INFO", ACPI_LV_INFO}, 1975 {"ACPI_LV_WARN", ACPI_LV_WARN}, 1976 {"ACPI_LV_ERROR", ACPI_LV_ERROR}, 1977 {"ACPI_LV_FATAL", ACPI_LV_FATAL}, 1978 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT}, 1979 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS}, 1980 1981 /* Trace verbosity level 1 [Standard Trace Level] */ 1982 {"ACPI_LV_PARSE", ACPI_LV_PARSE}, 1983 {"ACPI_LV_LOAD", ACPI_LV_LOAD}, 1984 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH}, 1985 {"ACPI_LV_EXEC", ACPI_LV_EXEC}, 1986 {"ACPI_LV_NAMES", ACPI_LV_NAMES}, 1987 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION}, 1988 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD}, 1989 {"ACPI_LV_TABLES", ACPI_LV_TABLES}, 1990 {"ACPI_LV_VALUES", ACPI_LV_VALUES}, 1991 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS}, 1992 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES}, 1993 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS}, 1994 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE}, 1995 {"ACPI_LV_INIT", ACPI_LV_INIT}, 1996 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1}, 1997 1998 /* Trace verbosity level 2 [Function tracing and memory allocation] */ 1999 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS}, 2000 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS}, 2001 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS}, 2002 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2}, 2003 {"ACPI_LV_ALL", ACPI_LV_ALL}, 2004 2005 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */ 2006 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX}, 2007 {"ACPI_LV_THREADS", ACPI_LV_THREADS}, 2008 {"ACPI_LV_IO", ACPI_LV_IO}, 2009 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS}, 2010 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3}, 2011 2012 /* Exceptionally verbose output -- also used in the global "DebugLevel" */ 2013 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE}, 2014 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO}, 2015 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES}, 2016 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS}, 2017 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE}, 2018 {NULL, 0} 2019}; 2020 2021static void 2022acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag) 2023{ 2024 char *ep; 2025 int i, l; 2026 int set; 2027 2028 while (*cp) { 2029 if (isspace(*cp)) { 2030 cp++; 2031 continue; 2032 } 2033 ep = cp; 2034 while (*ep && !isspace(*ep)) 2035 ep++; 2036 if (*cp == '!') { 2037 set = 0; 2038 cp++; 2039 if (cp == ep) 2040 continue; 2041 } else { 2042 set = 1; 2043 } 2044 l = ep - cp; 2045 for (i = 0; tag[i].name != NULL; i++) { 2046 if (!strncmp(cp, tag[i].name, l)) { 2047 if (set) { 2048 *flag |= tag[i].value; 2049 } else { 2050 *flag &= ~tag[i].value; 2051 } 2052 printf("ACPI_DEBUG: set '%s'\n", tag[i].name); 2053 } 2054 } 2055 cp = ep; 2056 } 2057} 2058 2059static void 2060acpi_set_debugging(void *junk) 2061{ 2062 char *cp; 2063 2064 if (!cold) 2065 return; 2066 2067 AcpiDbgLayer = 0; 2068 AcpiDbgLevel = 0; 2069 if ((cp = getenv("debug.acpi.layer")) != NULL) { 2070 acpi_parse_debug(cp, &dbg_layer[0], &AcpiDbgLayer); 2071 freeenv(cp); 2072 } 2073 if ((cp = getenv("debug.acpi.level")) != NULL) { 2074 acpi_parse_debug(cp, &dbg_level[0], &AcpiDbgLevel); 2075 freeenv(cp); 2076 } 2077 2078 printf("ACPI debug layer 0x%x debug level 0x%x\n", AcpiDbgLayer, AcpiDbgLevel); 2079} 2080SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging, NULL); 2081#endif 2082 2083static int 2084acpi_pm_func(u_long cmd, void *arg, ...) 2085{ 2086 int state, acpi_state; 2087 int error; 2088 struct acpi_softc *sc; 2089 va_list ap; 2090 2091 error = 0; 2092 switch (cmd) { 2093 case POWER_CMD_SUSPEND: 2094 sc = (struct acpi_softc *)arg; 2095 if (sc == NULL) { 2096 error = EINVAL; 2097 goto out; 2098 } 2099 2100 va_start(ap, arg); 2101 state = va_arg(ap, int); 2102 va_end(ap); 2103 2104 switch (state) { 2105 case POWER_SLEEP_STATE_STANDBY: 2106 acpi_state = sc->acpi_standby_sx; 2107 break; 2108 case POWER_SLEEP_STATE_SUSPEND: 2109 acpi_state = sc->acpi_suspend_sx; 2110 break; 2111 case POWER_SLEEP_STATE_HIBERNATE: 2112 acpi_state = ACPI_STATE_S4; 2113 break; 2114 default: 2115 error = EINVAL; 2116 goto out; 2117 } 2118 2119 acpi_SetSleepState(sc, acpi_state); 2120 break; 2121 2122 default: 2123 error = EINVAL; 2124 goto out; 2125 } 2126 2127out: 2128 return (error); 2129} 2130 2131static void 2132acpi_pm_register(void *arg) 2133{ 2134 int error; 2135 2136 if (!cold) 2137 return; 2138 2139 if (!resource_int_value("acpi", 0, "disabled", &error) && 2140 (error != 0)) 2141 return; 2142 2143 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL); 2144} 2145 2146SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0); 2147 2148