acpi.c revision 102918
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 102918 2002-09-04 03:11:20Z jhb $ 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 60MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices"); 61 62/* 63 * Hooks for the ACPI CA debugging infrastructure 64 */ 65#define _COMPONENT ACPI_BUS 66ACPI_MODULE_NAME("ACPI") 67 68/* 69 * Character device 70 */ 71 72static d_open_t acpiopen; 73static d_close_t acpiclose; 74static d_ioctl_t acpiioctl; 75 76#define CDEV_MAJOR 152 77static 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 93static 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 */ 97static int acpi_off_state = ACPI_STATE_S5; 98 99struct mtx acpi_mutex; 100 101static int acpi_modevent(struct module *mod, int event, void *junk); 102static void acpi_identify(driver_t *driver, device_t parent); 103static int acpi_probe(device_t dev); 104static int acpi_attach(device_t dev); 105static device_t acpi_add_child(device_t bus, int order, const char *name, int unit); 106static int acpi_print_child(device_t bus, device_t child); 107static int acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result); 108static int acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value); 109static int acpi_set_resource(device_t dev, device_t child, int type, int rid, u_long start, 110 u_long count); 111static int acpi_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, 112 u_long *countp); 113static struct resource *acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, 114 u_long start, u_long end, u_long count, u_int flags); 115static int acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r); 116static u_int32_t acpi_isa_get_logicalid(device_t dev); 117static int acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids); 118 119static void acpi_probe_children(device_t bus); 120static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status); 121 122static void acpi_shutdown_pre_sync(void *arg, int howto); 123static void acpi_shutdown_final(void *arg, int howto); 124 125static void acpi_enable_fixed_events(struct acpi_softc *sc); 126 127static void acpi_system_eventhandler_sleep(void *arg, int state); 128static void acpi_system_eventhandler_wakeup(void *arg, int state); 129static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); 130 131static int acpi_pm_func(u_long cmd, void *arg, ...); 132 133static device_method_t acpi_methods[] = { 134 /* Device interface */ 135 DEVMETHOD(device_identify, acpi_identify), 136 DEVMETHOD(device_probe, acpi_probe), 137 DEVMETHOD(device_attach, acpi_attach), 138 DEVMETHOD(device_shutdown, bus_generic_shutdown), 139 DEVMETHOD(device_suspend, bus_generic_suspend), 140 DEVMETHOD(device_resume, bus_generic_resume), 141 142 /* Bus interface */ 143 DEVMETHOD(bus_add_child, acpi_add_child), 144 DEVMETHOD(bus_print_child, acpi_print_child), 145 DEVMETHOD(bus_read_ivar, acpi_read_ivar), 146 DEVMETHOD(bus_write_ivar, acpi_write_ivar), 147 DEVMETHOD(bus_set_resource, acpi_set_resource), 148 DEVMETHOD(bus_get_resource, acpi_get_resource), 149 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource), 150 DEVMETHOD(bus_release_resource, acpi_release_resource), 151 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 152 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 153 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 154 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 155 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 156 157 /* ISA emulation */ 158 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe), 159 160 {0, 0} 161}; 162 163static driver_t acpi_driver = { 164 "acpi", 165 acpi_methods, 166 sizeof(struct acpi_softc), 167}; 168 169static devclass_t acpi_devclass; 170DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0); 171MODULE_VERSION(acpi, 100); 172 173SYSCTL_INT(_debug, OID_AUTO, acpi_debug_layer, CTLFLAG_RW, &AcpiDbgLayer, 0, ""); 174SYSCTL_INT(_debug, OID_AUTO, acpi_debug_level, CTLFLAG_RW, &AcpiDbgLevel, 0, ""); 175static int acpi_ca_version = ACPI_CA_VERSION; 176SYSCTL_INT(_debug, OID_AUTO, acpi_ca_version, CTLFLAG_RD, &acpi_ca_version, 0, ""); 177 178/* 179 * ACPI can only be loaded as a module by the loader; activating it after 180 * system bootstrap time is not useful, and can be fatal to the system. 181 * It also cannot be unloaded, since the entire system bus heirarchy hangs off it. 182 */ 183static int 184acpi_modevent(struct module *mod, int event, void *junk) 185{ 186 switch(event) { 187 case MOD_LOAD: 188 if (!cold) 189 return(EPERM); 190 break; 191 case MOD_UNLOAD: 192 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI) 193 return(EBUSY); 194 break; 195 default: 196 break; 197 } 198 return(0); 199} 200 201/* 202 * Detect ACPI, perform early initialisation 203 */ 204static void 205acpi_identify(driver_t *driver, device_t parent) 206{ 207 device_t child; 208 int error; 209#ifdef ACPI_DEBUGGER 210 char *debugpoint; 211#endif 212 213 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 214 215 if(!cold){ 216 printf("Don't load this driver from userland!!\n"); 217 return ; 218 } 219 220 /* 221 * Check that we haven't been disabled with a hint. 222 */ 223 if (!resource_int_value("acpi", 0, "disabled", &error) && 224 (error != 0)) 225 return_VOID; 226 227 /* 228 * Make sure we're not being doubly invoked. 229 */ 230 if (device_find_child(parent, "acpi", 0) != NULL) 231 return_VOID; 232 233 /* initialise the ACPI mutex */ 234 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF); 235 236 /* 237 * Start up the ACPI CA subsystem. 238 */ 239#ifdef ACPI_DEBUGGER 240 debugpoint = getenv("debug.acpi.debugger"); 241 if (debugpoint) { 242 if (!strcmp(debugpoint, "init")) 243 acpi_EnterDebugger(); 244 freeenv(debugpoint); 245 } 246#endif 247 if (ACPI_FAILURE(error = AcpiInitializeSubsystem())) { 248 printf("ACPI: initialisation failed: %s\n", AcpiFormatException(error)); 249 return_VOID; 250 } 251#ifdef ACPI_DEBUGGER 252 debugpoint = getenv("debug.acpi.debugger"); 253 if (debugpoint) { 254 if (!strcmp(debugpoint, "tables")) 255 acpi_EnterDebugger(); 256 freeenv(debugpoint); 257 } 258#endif 259 260 if (ACPI_FAILURE(error = AcpiLoadTables())) { 261 printf("ACPI: table load failed: %s\n", AcpiFormatException(error)); 262 return_VOID; 263 } 264 265 /* 266 * Attach the actual ACPI device. 267 */ 268 if ((child = BUS_ADD_CHILD(parent, 0, "acpi", 0)) == NULL) { 269 device_printf(parent, "ACPI: could not attach\n"); 270 return_VOID; 271 } 272} 273 274/* 275 * Fetch some descriptive data from ACPI to put in our attach message 276 */ 277static int 278acpi_probe(device_t dev) 279{ 280 ACPI_TABLE_HEADER th; 281 char buf[20]; 282 ACPI_STATUS status; 283 int error; 284 285 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 286 287 if (power_pm_get_type() != POWER_PM_TYPE_NONE && 288 power_pm_get_type() != POWER_PM_TYPE_ACPI) { 289 device_printf(dev, "Other PM system enabled.\n"); 290 return_VALUE(ENXIO); 291 } 292 293 ACPI_LOCK; 294 295 if (ACPI_FAILURE(status = AcpiGetTableHeader(ACPI_TABLE_XSDT, 1, &th))) { 296 device_printf(dev, "couldn't get XSDT header: %s\n", AcpiFormatException(status)); 297 error = ENXIO; 298 } else { 299 sprintf(buf, "%.6s %.8s", th.OemId, th.OemTableId); 300 device_set_desc_copy(dev, buf); 301 error = 0; 302 } 303 ACPI_UNLOCK; 304 return_VALUE(error); 305} 306 307static int 308acpi_attach(device_t dev) 309{ 310 struct acpi_softc *sc; 311 ACPI_STATUS status; 312 int error; 313 UINT32 flags; 314 315#ifdef ACPI_DEBUGGER 316 char *debugpoint; 317#endif 318 319 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 320 ACPI_LOCK; 321 sc = device_get_softc(dev); 322 bzero(sc, sizeof(*sc)); 323 sc->acpi_dev = dev; 324 325#ifdef ACPI_DEBUGGER 326 debugpoint = getenv("debug.acpi.debugger"); 327 if (debugpoint) { 328 if (!strcmp(debugpoint, "spaces")) 329 acpi_EnterDebugger(); 330 freeenv(debugpoint); 331 } 332#endif 333 334 /* 335 * Install the default address space handlers. 336 */ 337 error = ENXIO; 338 if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 339 ACPI_ADR_SPACE_SYSTEM_MEMORY, 340 ACPI_DEFAULT_HANDLER, 341 NULL, NULL))) { 342 device_printf(dev, "could not initialise SystemMemory handler: %s\n", AcpiFormatException(status)); 343 goto out; 344 } 345 if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 346 ACPI_ADR_SPACE_SYSTEM_IO, 347 ACPI_DEFAULT_HANDLER, 348 NULL, NULL))) { 349 device_printf(dev, "could not initialise SystemIO handler: %s\n", AcpiFormatException(status)); 350 goto out; 351 } 352 if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 353 ACPI_ADR_SPACE_PCI_CONFIG, 354 ACPI_DEFAULT_HANDLER, 355 NULL, NULL))) { 356 device_printf(dev, "could not initialise PciConfig handler: %s\n", AcpiFormatException(status)); 357 goto out; 358 } 359 360 /* 361 * Bring ACPI fully online. 362 * 363 * Note that some systems (specifically, those with namespace evaluation issues 364 * that require the avoidance of parts of the namespace) must avoid running _INI 365 * and _STA on everything, as well as dodging the final object init pass. 366 * 367 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT). 368 * 369 * XXX We should arrange for the object init pass after we have attached all our 370 * child devices, but on many systems it works here. 371 */ 372#ifdef ACPI_DEBUGGER 373 debugpoint = getenv("debug.acpi.debugger"); 374 if (debugpoint) { 375 if (!strcmp(debugpoint, "enable")) 376 acpi_EnterDebugger(); 377 freeenv(debugpoint); 378 } 379#endif 380 flags = 0; 381 if (testenv("debug.acpi.avoid")) 382 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; 383 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) { 384 device_printf(dev, "could not enable ACPI: %s\n", AcpiFormatException(status)); 385 goto out; 386 } 387 388 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) { 389 device_printf(dev, "could not initialize ACPI objects: %s\n", AcpiFormatException(status)); 390 goto out; 391 } 392 393 /* 394 * Setup our sysctl tree. 395 * 396 * XXX: This doesn't check to make sure that none of these fail. 397 */ 398 sysctl_ctx_init(&sc->acpi_sysctl_ctx); 399 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx, 400 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, 401 device_get_name(dev), CTLFLAG_RD, 0, ""); 402 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 403 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW, 404 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); 405 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 406 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW, 407 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); 408 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 409 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW, 410 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", ""); 411 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 412 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW, 413 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", ""); 414 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 415 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW, 416 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", ""); 417 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 418 OID_AUTO, "sleep_delay", CTLFLAG_RD | CTLFLAG_RW, 419 &sc->acpi_sleep_delay, 0, "sleep delay"); 420 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 421 OID_AUTO, "s4bios", CTLFLAG_RD | CTLFLAG_RW, 422 &sc->acpi_s4bios, 0, "S4BIOS mode"); 423 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 424 OID_AUTO, "verbose", CTLFLAG_RD | CTLFLAG_RW, 425 &sc->acpi_verbose, 0, "verbose mode"); 426 sc->acpi_sleep_delay = 0; 427 sc->acpi_s4bios = 1; 428 if (bootverbose) 429 sc->acpi_verbose = 1; 430 431 /* 432 * Dispatch the default sleep state to devices. 433 * TBD: should be configured from userland policy manager. 434 */ 435 sc->acpi_power_button_sx = ACPI_POWER_BUTTON_DEFAULT_SX; 436 sc->acpi_sleep_button_sx = ACPI_SLEEP_BUTTON_DEFAULT_SX; 437 sc->acpi_lid_switch_sx = ACPI_LID_SWITCH_DEFAULT_SX; 438 sc->acpi_standby_sx = ACPI_STATE_S1; 439 sc->acpi_suspend_sx = ACPI_STATE_S3; 440 441 acpi_enable_fixed_events(sc); 442 443 /* 444 * Scan the namespace and attach/initialise children. 445 */ 446#ifdef ACPI_DEBUGGER 447 debugpoint = getenv("debug.acpi.debugger"); 448 if (debugpoint) { 449 if (!strcmp(debugpoint, "probe")) 450 acpi_EnterDebugger(); 451 freeenv(debugpoint); 452 } 453#endif 454 if (!acpi_disabled("bus")) 455 acpi_probe_children(dev); 456 457 /* 458 * Register our shutdown handlers 459 */ 460 EVENTHANDLER_REGISTER(shutdown_pre_sync, acpi_shutdown_pre_sync, sc, SHUTDOWN_PRI_LAST); 461 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc, SHUTDOWN_PRI_LAST); 462 463 /* 464 * Register our acpi event handlers. 465 * XXX should be configurable eg. via userland policy manager. 466 */ 467 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep, sc, ACPI_EVENT_PRI_LAST); 468 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup, sc, ACPI_EVENT_PRI_LAST); 469 470 /* 471 * Flag our initial states. 472 */ 473 sc->acpi_enabled = 1; 474 sc->acpi_sstate = ACPI_STATE_S0; 475 sc->acpi_sleep_disabled = 0; 476 477 /* 478 * Create the control device 479 */ 480 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, 0, 5, 0660, "acpi"); 481 sc->acpi_dev_t->si_drv1 = sc; 482 483#ifdef ACPI_DEBUGGER 484 debugpoint = getenv("debug.acpi.debugger"); 485 if (debugpoint) { 486 if (!strcmp(debugpoint, "running")) 487 acpi_EnterDebugger(); 488 freeenv(debugpoint); 489 } 490#endif 491 492#if defined(ACPI_MAX_THREADS) && ACPI_MAX_THREADS > 0 493 if ((error = acpi_task_thread_init())) { 494 goto out; 495 } 496#endif 497 498 if ((error = acpi_machdep_init(dev))) { 499 goto out; 500 } 501 502 /* Register ACPI again to pass the correct argument of pm_func. */ 503 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc); 504 505 error = 0; 506 507 out: 508 ACPI_UNLOCK; 509 return_VALUE(error); 510} 511 512/* 513 * Handle a new device being added 514 */ 515static device_t 516acpi_add_child(device_t bus, int order, const char *name, int unit) 517{ 518 struct acpi_device *ad; 519 device_t child; 520 521 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT)) == NULL) 522 return(NULL); 523 bzero(ad, sizeof(*ad)); 524 525 resource_list_init(&ad->ad_rl); 526 527 child = device_add_child_ordered(bus, order, name, unit); 528 if (child != NULL) 529 device_set_ivars(child, ad); 530 return(child); 531} 532 533static int 534acpi_print_child(device_t bus, device_t child) 535{ 536 struct acpi_device *adev = device_get_ivars(child); 537 struct resource_list *rl = &adev->ad_rl; 538 int retval = 0; 539 540 retval += bus_print_child_header(bus, child); 541 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx"); 542 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx"); 543 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 544 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld"); 545 retval += bus_print_child_footer(bus, child); 546 547 return(retval); 548} 549 550 551/* 552 * Handle per-device ivars 553 */ 554static int 555acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) 556{ 557 struct acpi_device *ad; 558 559 if ((ad = device_get_ivars(child)) == NULL) { 560 printf("device has no ivars\n"); 561 return(ENOENT); 562 } 563 564 switch(index) { 565 /* ACPI ivars */ 566 case ACPI_IVAR_HANDLE: 567 *(ACPI_HANDLE *)result = ad->ad_handle; 568 break; 569 case ACPI_IVAR_MAGIC: 570 *(int *)result = ad->ad_magic; 571 break; 572 case ACPI_IVAR_PRIVATE: 573 *(void **)result = ad->ad_private; 574 break; 575 576 /* ISA compatibility */ 577 case ISA_IVAR_VENDORID: 578 case ISA_IVAR_SERIAL: 579 case ISA_IVAR_COMPATID: 580 *(int *)result = -1; 581 break; 582 583 case ISA_IVAR_LOGICALID: 584 *(int *)result = acpi_isa_get_logicalid(child); 585 break; 586 587 default: 588 panic("bad ivar read request (%d)", index); 589 return(ENOENT); 590 } 591 return(0); 592} 593 594static int 595acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value) 596{ 597 struct acpi_device *ad; 598 599 if ((ad = device_get_ivars(child)) == NULL) { 600 printf("device has no ivars\n"); 601 return(ENOENT); 602 } 603 604 switch(index) { 605 /* ACPI ivars */ 606 case ACPI_IVAR_HANDLE: 607 ad->ad_handle = (ACPI_HANDLE)value; 608 break; 609 case ACPI_IVAR_MAGIC: 610 ad->ad_magic = (int )value; 611 break; 612 case ACPI_IVAR_PRIVATE: 613 ad->ad_private = (void *)value; 614 break; 615 616 default: 617 panic("bad ivar write request (%d)", index); 618 return(ENOENT); 619 } 620 return(0); 621} 622 623/* 624 * Handle child resource allocation/removal 625 */ 626static int 627acpi_set_resource(device_t dev, device_t child, int type, int rid, u_long start, u_long count) 628{ 629 struct acpi_device *ad = device_get_ivars(child); 630 struct resource_list *rl = &ad->ad_rl; 631 632 resource_list_add(rl, type, rid, start, start + count -1, count); 633 634 return(0); 635} 636 637static int 638acpi_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, u_long *countp) 639{ 640 struct acpi_device *ad = device_get_ivars(child); 641 struct resource_list *rl = &ad->ad_rl; 642 struct resource_list_entry *rle; 643 644 rle = resource_list_find(rl, type, rid); 645 if (!rle) 646 return(ENOENT); 647 648 if (startp) 649 *startp = rle->start; 650 if (countp) 651 *countp = rle->count; 652 653 return(0); 654} 655 656static struct resource * 657acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, 658 u_long start, u_long end, u_long count, u_int flags) 659{ 660 struct acpi_device *ad = device_get_ivars(child); 661 struct resource_list *rl = &ad->ad_rl; 662 663 return(resource_list_alloc(rl, bus, child, type, rid, start, end, count, flags)); 664} 665 666static int 667acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r) 668{ 669 struct acpi_device *ad = device_get_ivars(child); 670 struct resource_list *rl = &ad->ad_rl; 671 672 return(resource_list_release(rl, bus, child, type, rid, r)); 673} 674 675/* 676 * Handle ISA-like devices probing for a PnP ID to match. 677 */ 678#define PNP_EISAID(s) \ 679 ((((s[0] - '@') & 0x1f) << 2) \ 680 | (((s[1] - '@') & 0x18) >> 3) \ 681 | (((s[1] - '@') & 0x07) << 13) \ 682 | (((s[2] - '@') & 0x1f) << 8) \ 683 | (PNP_HEXTONUM(s[4]) << 16) \ 684 | (PNP_HEXTONUM(s[3]) << 20) \ 685 | (PNP_HEXTONUM(s[6]) << 24) \ 686 | (PNP_HEXTONUM(s[5]) << 28)) 687 688static u_int32_t 689acpi_isa_get_logicalid(device_t dev) 690{ 691 ACPI_HANDLE h; 692 ACPI_DEVICE_INFO devinfo; 693 ACPI_STATUS error; 694 u_int32_t pnpid; 695 696 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 697 698 pnpid = 0; 699 ACPI_LOCK; 700 701 /* fetch and validate the HID */ 702 if ((h = acpi_get_handle(dev)) == NULL) 703 goto out; 704 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 705 goto out; 706 if (!(devinfo.Valid & ACPI_VALID_HID)) 707 goto out; 708 709 pnpid = PNP_EISAID(devinfo.HardwareId); 710out: 711 ACPI_UNLOCK; 712 return_VALUE(pnpid); 713} 714 715static int 716acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids) 717{ 718 int result; 719 u_int32_t pnpid; 720 721 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 722 723 /* 724 * ISA-style drivers attached to ACPI may persist and 725 * probe manually if we return ENOENT. We never want 726 * that to happen, so don't ever return it. 727 */ 728 result = ENXIO; 729 730 /* scan the supplied IDs for a match */ 731 pnpid = acpi_isa_get_logicalid(child); 732 while (ids && ids->ip_id) { 733 if (pnpid == ids->ip_id) { 734 result = 0; 735 goto out; 736 } 737 ids++; 738 } 739 out: 740 return_VALUE(result); 741} 742 743/* 744 * Scan relevant portions of the ACPI namespace and attach child devices. 745 * 746 * Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and \_SB_ scopes, 747 * and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec. 748 */ 749static void 750acpi_probe_children(device_t bus) 751{ 752 ACPI_HANDLE parent; 753 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL}; 754 int i; 755 756 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 757 ACPI_ASSERTLOCK; 758 759 /* 760 * Create any static children by calling device identify methods. 761 */ 762 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n")); 763 bus_generic_probe(bus); 764 765 /* 766 * Scan the namespace and insert placeholders for all the devices that 767 * we find. 768 * 769 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because 770 * we want to create nodes for all devices, not just those that are currently 771 * present. (This assumes that we don't want to create/remove devices as they 772 * appear, which might be smarter.) 773 */ 774 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n")); 775 for (i = 0; scopes[i] != NULL; i++) 776 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent))) 777 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, acpi_probe_child, bus, NULL); 778 779 /* 780 * Scan all of the child devices we have created and let them probe/attach. 781 */ 782 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n")); 783 bus_generic_attach(bus); 784 785 /* 786 * Some of these children may have attached others as part of their attach 787 * process (eg. the root PCI bus driver), so rescan. 788 */ 789 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n")); 790 bus_generic_attach(bus); 791 792 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n")); 793 return_VOID; 794} 795 796/* 797 * Evaluate a child device and determine whether we might attach a device to 798 * it. 799 */ 800static ACPI_STATUS 801acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 802{ 803 ACPI_OBJECT_TYPE type; 804 device_t child, bus = (device_t)context; 805 806 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 807 808 /* 809 * Skip this device if we think we'll have trouble with it. 810 */ 811 if (acpi_avoid(handle)) 812 return_ACPI_STATUS(AE_OK); 813 814 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) { 815 switch(type) { 816 case ACPI_TYPE_DEVICE: 817 case ACPI_TYPE_PROCESSOR: 818 case ACPI_TYPE_THERMAL: 819 case ACPI_TYPE_POWER: 820 if (acpi_disabled("children")) 821 break; 822 /* 823 * Create a placeholder device for this node. Sort the placeholder 824 * so that the probe/attach passes will run breadth-first. 825 */ 826 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", acpi_name(handle))); 827 child = BUS_ADD_CHILD(bus, level * 10, NULL, -1); 828 if (child == NULL) 829 break; 830 acpi_set_handle(child, handle); 831 832 /* 833 * Check that the device is present. If it's not present, 834 * leave it disabled (so that we have a device_t attached to 835 * the handle, but we don't probe it). 836 */ 837 if ((type == ACPI_TYPE_DEVICE) && (!acpi_DeviceIsPresent(child))) { 838 device_disable(child); 839 break; 840 } 841 842 /* 843 * Get the device's resource settings and attach them. 844 * Note that if the device has _PRS but no _CRS, we need 845 * to decide when it's appropriate to try to configure the 846 * device. Ignore the return value here; it's OK for the 847 * device not to have any resources. 848 */ 849 acpi_parse_resources(child, handle, &acpi_res_parse_set); 850 851 /* if we're debugging, probe/attach now rather than later */ 852 ACPI_DEBUG_EXEC(device_probe_and_attach(child)); 853 break; 854 } 855 } 856 return_ACPI_STATUS(AE_OK); 857} 858 859static void 860acpi_shutdown_pre_sync(void *arg, int howto) 861{ 862 863 ACPI_ASSERTLOCK; 864 865 /* 866 * Disable all ACPI events before soft off, otherwise the system 867 * will be turned on again on some laptops. 868 * 869 * XXX this should probably be restricted to masking some events just 870 * before powering down, since we may still need ACPI during the 871 * shutdown process. 872 */ 873 acpi_Disable((struct acpi_softc *)arg); 874} 875 876static void 877acpi_shutdown_final(void *arg, int howto) 878{ 879 ACPI_STATUS status; 880 881 ACPI_ASSERTLOCK; 882 883 if (howto & RB_POWEROFF) { 884 printf("Power system off using ACPI...\n"); 885 if (ACPI_FAILURE(status = AcpiEnterSleepStatePrep(acpi_off_state))) { 886 printf("AcpiEnterSleepStatePrep failed - %s\n", 887 AcpiFormatException(status)); 888 return; 889 } 890 if (ACPI_FAILURE(status = AcpiEnterSleepState(acpi_off_state))) { 891 printf("ACPI power-off failed - %s\n", AcpiFormatException(status)); 892 } else { 893 DELAY(1000000); 894 printf("ACPI power-off failed - timeout\n"); 895 } 896 } else { 897 printf("Terminate ACPI\n"); 898 AcpiTerminate(); 899 } 900} 901 902static void 903acpi_enable_fixed_events(struct acpi_softc *sc) 904{ 905 static int first_time = 1; 906#define MSGFORMAT "%s button is handled as a fixed feature programming model.\n" 907 908 ACPI_ASSERTLOCK; 909 910 /* Enable and clear fixed events and install handlers. */ 911 if ((AcpiGbl_FADT != NULL) && (AcpiGbl_FADT->PwrButton == 0)) { 912 AcpiEnableEvent(ACPI_EVENT_POWER_BUTTON, ACPI_EVENT_FIXED, 0); 913 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON, ACPI_EVENT_FIXED); 914 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON, 915 acpi_eventhandler_power_button_for_sleep, sc); 916 if (first_time) { 917 device_printf(sc->acpi_dev, MSGFORMAT, "power"); 918 } 919 } 920 if ((AcpiGbl_FADT != NULL) && (AcpiGbl_FADT->SleepButton == 0)) { 921 AcpiEnableEvent(ACPI_EVENT_SLEEP_BUTTON, ACPI_EVENT_FIXED, 0); 922 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON, ACPI_EVENT_FIXED); 923 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON, 924 acpi_eventhandler_sleep_button_for_sleep, sc); 925 if (first_time) { 926 device_printf(sc->acpi_dev, MSGFORMAT, "sleep"); 927 } 928 } 929 930 first_time = 0; 931} 932 933/* 934 * Returns true if the device is actually present and should 935 * be attached to. This requires the present, enabled, UI-visible 936 * and diagnostics-passed bits to be set. 937 */ 938BOOLEAN 939acpi_DeviceIsPresent(device_t dev) 940{ 941 ACPI_HANDLE h; 942 ACPI_DEVICE_INFO devinfo; 943 ACPI_STATUS error; 944 945 ACPI_ASSERTLOCK; 946 947 if ((h = acpi_get_handle(dev)) == NULL) 948 return(FALSE); 949 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 950 return(FALSE); 951 /* if no _STA method, must be present */ 952 if (!(devinfo.Valid & ACPI_VALID_STA)) 953 return(TRUE); 954 /* return true for 'present' and 'functioning' */ 955 if ((devinfo.CurrentStatus & 0x9) == 0x9) 956 return(TRUE); 957 return(FALSE); 958} 959 960/* 961 * Returns true if the battery is actually present and inserted. 962 */ 963BOOLEAN 964acpi_BatteryIsPresent(device_t dev) 965{ 966 ACPI_HANDLE h; 967 ACPI_DEVICE_INFO devinfo; 968 ACPI_STATUS error; 969 970 ACPI_ASSERTLOCK; 971 972 if ((h = acpi_get_handle(dev)) == NULL) 973 return(FALSE); 974 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 975 return(FALSE); 976 /* if no _STA method, must be present */ 977 if (!(devinfo.Valid & ACPI_VALID_STA)) 978 return(TRUE); 979 /* return true for 'present' and 'functioning' */ 980 if ((devinfo.CurrentStatus & 0x19) == 0x19) 981 return(TRUE); 982 return(FALSE); 983} 984 985/* 986 * Match a HID string against a device 987 */ 988BOOLEAN 989acpi_MatchHid(device_t dev, char *hid) 990{ 991 ACPI_HANDLE h; 992 ACPI_DEVICE_INFO devinfo; 993 ACPI_STATUS error; 994 int cid; 995 996 ACPI_ASSERTLOCK; 997 998 if (hid == NULL) 999 return(FALSE); 1000 if ((h = acpi_get_handle(dev)) == NULL) 1001 return(FALSE); 1002 if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) 1003 return(FALSE); 1004 if ((devinfo.Valid & ACPI_VALID_HID) && !strcmp(hid, devinfo.HardwareId)) 1005 return(TRUE); 1006 if (ACPI_FAILURE(error = acpi_EvaluateInteger(h, "_CID", &cid))) 1007 return(FALSE); 1008 if (cid == PNP_EISAID(hid)) 1009 return(TRUE); 1010 return(FALSE); 1011} 1012 1013/* 1014 * Return the handle of a named object within our scope, ie. that of (parent) 1015 * or one if its parents. 1016 */ 1017ACPI_STATUS 1018acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result) 1019{ 1020 ACPI_HANDLE r; 1021 ACPI_STATUS status; 1022 1023 ACPI_ASSERTLOCK; 1024 1025 /* walk back up the tree to the root */ 1026 for (;;) { 1027 if (ACPI_SUCCESS(status = AcpiGetHandle(parent, path, &r))) { 1028 *result = r; 1029 return(AE_OK); 1030 } 1031 if (status != AE_NOT_FOUND) 1032 return(AE_OK); 1033 if (ACPI_FAILURE(AcpiGetParent(parent, &r))) 1034 return(AE_NOT_FOUND); 1035 parent = r; 1036 } 1037} 1038 1039/* 1040 * Allocate a buffer with a preset data size. 1041 */ 1042ACPI_BUFFER * 1043acpi_AllocBuffer(int size) 1044{ 1045 ACPI_BUFFER *buf; 1046 1047 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL) 1048 return(NULL); 1049 buf->Length = size; 1050 buf->Pointer = (void *)(buf + 1); 1051 return(buf); 1052} 1053 1054/* 1055 * Evaluate a path that should return an integer. 1056 */ 1057ACPI_STATUS 1058acpi_EvaluateInteger(ACPI_HANDLE handle, char *path, int *number) 1059{ 1060 ACPI_STATUS error; 1061 ACPI_BUFFER buf; 1062 ACPI_OBJECT param; 1063 1064 ACPI_ASSERTLOCK; 1065 1066 if (handle == NULL) 1067 handle = ACPI_ROOT_OBJECT; 1068 1069 /* 1070 * Assume that what we've been pointed at is an Integer object, or 1071 * a method that will return an Integer. 1072 */ 1073 buf.Pointer = ¶m; 1074 buf.Length = sizeof(param); 1075 if (ACPI_SUCCESS(error = AcpiEvaluateObject(handle, path, NULL, &buf))) { 1076 if (param.Type == ACPI_TYPE_INTEGER) { 1077 *number = param.Integer.Value; 1078 } else { 1079 error = AE_TYPE; 1080 } 1081 } 1082 1083 /* 1084 * In some applications, a method that's expected to return an Integer 1085 * may instead return a Buffer (probably to simplify some internal 1086 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer, 1087 * convert it into an Integer as best we can. 1088 * 1089 * This is a hack. 1090 */ 1091 if (error == AE_BUFFER_OVERFLOW) { 1092 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) { 1093 error = AE_NO_MEMORY; 1094 } else { 1095 if (ACPI_SUCCESS(error = AcpiEvaluateObject(handle, path, NULL, &buf))) { 1096 error = acpi_ConvertBufferToInteger(&buf, number); 1097 } 1098 } 1099 AcpiOsFree(buf.Pointer); 1100 } 1101 return(error); 1102} 1103 1104ACPI_STATUS 1105acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, int *number) 1106{ 1107 ACPI_OBJECT *p; 1108 int i; 1109 1110 p = (ACPI_OBJECT *)bufp->Pointer; 1111 if (p->Type == ACPI_TYPE_INTEGER) { 1112 *number = p->Integer.Value; 1113 return(AE_OK); 1114 } 1115 if (p->Type != ACPI_TYPE_BUFFER) 1116 return(AE_TYPE); 1117 if (p->Buffer.Length > sizeof(int)) 1118 return(AE_BAD_DATA); 1119 *number = 0; 1120 for (i = 0; i < p->Buffer.Length; i++) 1121 *number += (*(p->Buffer.Pointer + i) << (i * 8)); 1122 return(AE_OK); 1123} 1124 1125/* 1126 * Iterate over the elements of an a package object, calling the supplied 1127 * function for each element. 1128 * 1129 * XXX possible enhancement might be to abort traversal on error. 1130 */ 1131ACPI_STATUS 1132acpi_ForeachPackageObject(ACPI_OBJECT *pkg, void (* func)(ACPI_OBJECT *comp, void *arg), void *arg) 1133{ 1134 ACPI_OBJECT *comp; 1135 int i; 1136 1137 if ((pkg == NULL) || (pkg->Type != ACPI_TYPE_PACKAGE)) 1138 return(AE_BAD_PARAMETER); 1139 1140 /* iterate over components */ 1141 for (i = 0, comp = pkg->Package.Elements; i < pkg->Package.Count; i++, comp++) 1142 func(comp, arg); 1143 1144 return(AE_OK); 1145} 1146 1147/* 1148 * Find the (index)th resource object in a set. 1149 */ 1150ACPI_STATUS 1151acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp) 1152{ 1153 ACPI_RESOURCE *rp; 1154 int i; 1155 1156 rp = (ACPI_RESOURCE *)buf->Pointer; 1157 i = index; 1158 while (i-- > 0) { 1159 /* range check */ 1160 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 1161 return(AE_BAD_PARAMETER); 1162 /* check for terminator */ 1163 if ((rp->Id == ACPI_RSTYPE_END_TAG) || 1164 (rp->Length == 0)) 1165 return(AE_NOT_FOUND); 1166 rp = ACPI_RESOURCE_NEXT(rp); 1167 } 1168 if (resp != NULL) 1169 *resp = rp; 1170 return(AE_OK); 1171} 1172 1173/* 1174 * Append an ACPI_RESOURCE to an ACPI_BUFFER. 1175 * 1176 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER 1177 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible 1178 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of 1179 * resources. 1180 */ 1181#define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512 1182 1183ACPI_STATUS 1184acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res) 1185{ 1186 ACPI_RESOURCE *rp; 1187 void *newp; 1188 1189 /* 1190 * Initialise the buffer if necessary. 1191 */ 1192 if (buf->Pointer == NULL) { 1193 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE; 1194 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL) 1195 return(AE_NO_MEMORY); 1196 rp = (ACPI_RESOURCE *)buf->Pointer; 1197 rp->Id = ACPI_RSTYPE_END_TAG; 1198 rp->Length = 0; 1199 } 1200 if (res == NULL) 1201 return(AE_OK); 1202 1203 /* 1204 * Scan the current buffer looking for the terminator. 1205 * This will either find the terminator or hit the end 1206 * of the buffer and return an error. 1207 */ 1208 rp = (ACPI_RESOURCE *)buf->Pointer; 1209 for (;;) { 1210 /* range check, don't go outside the buffer */ 1211 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 1212 return(AE_BAD_PARAMETER); 1213 if ((rp->Id == ACPI_RSTYPE_END_TAG) || 1214 (rp->Length == 0)) { 1215 break; 1216 } 1217 rp = ACPI_RESOURCE_NEXT(rp); 1218 } 1219 1220 /* 1221 * Check the size of the buffer and expand if required. 1222 * 1223 * Required size is: 1224 * size of existing resources before terminator + 1225 * size of new resource and header + 1226 * size of terminator. 1227 * 1228 * Note that this loop should really only run once, unless 1229 * for some reason we are stuffing a *really* huge resource. 1230 */ 1231 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) + 1232 res->Length + ACPI_RESOURCE_LENGTH_NO_DATA + 1233 ACPI_RESOURCE_LENGTH) >= buf->Length) { 1234 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL) 1235 return(AE_NO_MEMORY); 1236 bcopy(buf->Pointer, newp, buf->Length); 1237 rp = (ACPI_RESOURCE *)((u_int8_t *)newp + 1238 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer)); 1239 AcpiOsFree(buf->Pointer); 1240 buf->Pointer = newp; 1241 buf->Length += buf->Length; 1242 } 1243 1244 /* 1245 * Insert the new resource. 1246 */ 1247 bcopy(res, rp, res->Length + ACPI_RESOURCE_LENGTH_NO_DATA); 1248 1249 /* 1250 * And add the terminator. 1251 */ 1252 rp = ACPI_RESOURCE_NEXT(rp); 1253 rp->Id = ACPI_RSTYPE_END_TAG; 1254 rp->Length = 0; 1255 1256 return(AE_OK); 1257} 1258 1259#define ACPI_MINIMUM_AWAKETIME 5 1260 1261static void 1262acpi_sleep_enable(void *arg) 1263{ 1264 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0; 1265} 1266 1267/* 1268 * Set the system sleep state 1269 * 1270 * Currently we only support S1 and S5 1271 */ 1272ACPI_STATUS 1273acpi_SetSleepState(struct acpi_softc *sc, int state) 1274{ 1275 ACPI_STATUS status = AE_OK; 1276 UINT8 TypeA; 1277 UINT8 TypeB; 1278 1279 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 1280 ACPI_ASSERTLOCK; 1281 1282 if (sc->acpi_sstate != ACPI_STATE_S0) 1283 return_ACPI_STATUS(AE_BAD_PARAMETER); /* avoid reentry */ 1284 1285 if (sc->acpi_sleep_disabled) 1286 return_ACPI_STATUS(AE_OK); 1287 1288 switch (state) { 1289 case ACPI_STATE_S0: /* XXX only for testing */ 1290 if (ACPI_FAILURE(status = AcpiEnterSleepState((UINT8)state))) { 1291 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status)); 1292 } 1293 break; 1294 1295 case ACPI_STATE_S1: 1296 case ACPI_STATE_S2: 1297 case ACPI_STATE_S3: 1298 case ACPI_STATE_S4: 1299 if (ACPI_FAILURE(status = AcpiGetSleepTypeData((UINT8)state, &TypeA, &TypeB))) { 1300 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n", AcpiFormatException(status)); 1301 break; 1302 } 1303 1304 sc->acpi_sstate = state; 1305 sc->acpi_sleep_disabled = 1; 1306 1307 /* 1308 * Inform all devices that we are going to sleep. 1309 */ 1310 if (DEVICE_SUSPEND(root_bus) != 0) { 1311 /* 1312 * Re-wake the system. 1313 * 1314 * XXX note that a better two-pass approach with a 'veto' pass 1315 * followed by a "real thing" pass would be better, but the 1316 * current bus interface does not provide for this. 1317 */ 1318 DEVICE_RESUME(root_bus); 1319 return_ACPI_STATUS(AE_ERROR); 1320 } 1321 1322 if (ACPI_FAILURE(status = AcpiEnterSleepStatePrep(state))) { 1323 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 1324 AcpiFormatException(status)); 1325 break; 1326 } 1327 1328 if (sc->acpi_sleep_delay > 0) { 1329 DELAY(sc->acpi_sleep_delay * 1000000); 1330 } 1331 1332 if (state != ACPI_STATE_S1) { 1333 acpi_sleep_machdep(sc, state); 1334 1335 /* AcpiEnterSleepState() maybe incompleted, unlock here if locked. */ 1336 if (AcpiGbl_AcpiMutexInfo[ACPI_MTX_HARDWARE].OwnerId != ACPI_MUTEX_NOT_ACQUIRED) { 1337 AcpiUtReleaseMutex(ACPI_MTX_HARDWARE); 1338 } 1339 1340 /* Re-enable ACPI hardware on wakeup from sleep state 4. */ 1341 if (state == ACPI_STATE_S4) { 1342 AcpiEnable(); 1343 } 1344 } else { 1345 if (ACPI_FAILURE(status = AcpiEnterSleepState((UINT8)state))) { 1346 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status)); 1347 break; 1348 } 1349 } 1350 AcpiLeaveSleepState((UINT8)state); 1351 DEVICE_RESUME(root_bus); 1352 sc->acpi_sstate = ACPI_STATE_S0; 1353 acpi_enable_fixed_events(sc); 1354 break; 1355 1356 case ACPI_STATE_S5: 1357 /* 1358 * Shut down cleanly and power off. This will call us back through the 1359 * shutdown handlers. 1360 */ 1361 shutdown_nice(RB_POWEROFF); 1362 break; 1363 1364 default: 1365 status = AE_BAD_PARAMETER; 1366 break; 1367 } 1368 1369 if (sc->acpi_sleep_disabled) 1370 timeout(acpi_sleep_enable, (caddr_t)sc, hz * ACPI_MINIMUM_AWAKETIME); 1371 1372 return_ACPI_STATUS(status); 1373} 1374 1375/* 1376 * Enable/Disable ACPI 1377 */ 1378ACPI_STATUS 1379acpi_Enable(struct acpi_softc *sc) 1380{ 1381 ACPI_STATUS status; 1382 u_int32_t flags; 1383 1384 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1385 ACPI_ASSERTLOCK; 1386 1387 flags = ACPI_NO_ADDRESS_SPACE_INIT | ACPI_NO_HARDWARE_INIT | 1388 ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; 1389 if (!sc->acpi_enabled) { 1390 status = AcpiEnableSubsystem(flags); 1391 } else { 1392 status = AE_OK; 1393 } 1394 if (status == AE_OK) 1395 sc->acpi_enabled = 1; 1396 return_ACPI_STATUS(status); 1397} 1398 1399ACPI_STATUS 1400acpi_Disable(struct acpi_softc *sc) 1401{ 1402 ACPI_STATUS status; 1403 1404 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1405 ACPI_ASSERTLOCK; 1406 1407 if (sc->acpi_enabled) { 1408 status = AcpiDisable(); 1409 } else { 1410 status = AE_OK; 1411 } 1412 if (status == AE_OK) 1413 sc->acpi_enabled = 0; 1414 return_ACPI_STATUS(status); 1415} 1416 1417/* 1418 * ACPI Event Handlers 1419 */ 1420 1421/* System Event Handlers (registered by EVENTHANDLER_REGISTER) */ 1422 1423static void 1424acpi_system_eventhandler_sleep(void *arg, int state) 1425{ 1426 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 1427 1428 ACPI_LOCK; 1429 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) 1430 acpi_SetSleepState((struct acpi_softc *)arg, state); 1431 ACPI_UNLOCK; 1432 return_VOID; 1433} 1434 1435static void 1436acpi_system_eventhandler_wakeup(void *arg, int state) 1437{ 1438 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 1439 1440 /* Well, what to do? :-) */ 1441 1442 ACPI_LOCK; 1443 ACPI_UNLOCK; 1444 1445 return_VOID; 1446} 1447 1448/* 1449 * ACPICA Event Handlers (FixedEvent, also called from button notify handler) 1450 */ 1451UINT32 1452acpi_eventhandler_power_button_for_sleep(void *context) 1453{ 1454 struct acpi_softc *sc = (struct acpi_softc *)context; 1455 1456 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1457 1458 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx); 1459 1460 return_VALUE(ACPI_INTERRUPT_HANDLED); 1461} 1462 1463UINT32 1464acpi_eventhandler_power_button_for_wakeup(void *context) 1465{ 1466 struct acpi_softc *sc = (struct acpi_softc *)context; 1467 1468 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1469 1470 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx); 1471 1472 return_VALUE(ACPI_INTERRUPT_HANDLED); 1473} 1474 1475UINT32 1476acpi_eventhandler_sleep_button_for_sleep(void *context) 1477{ 1478 struct acpi_softc *sc = (struct acpi_softc *)context; 1479 1480 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1481 1482 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx); 1483 1484 return_VALUE(ACPI_INTERRUPT_HANDLED); 1485} 1486 1487UINT32 1488acpi_eventhandler_sleep_button_for_wakeup(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_wakeup_event, sc->acpi_sleep_button_sx); 1495 1496 return_VALUE(ACPI_INTERRUPT_HANDLED); 1497} 1498 1499/* 1500 * XXX This is kinda ugly, and should not be here. 1501 */ 1502struct acpi_staticbuf { 1503 ACPI_BUFFER buffer; 1504 char data[512]; 1505}; 1506 1507char * 1508acpi_name(ACPI_HANDLE handle) 1509{ 1510 static struct acpi_staticbuf buf; 1511 1512 ACPI_ASSERTLOCK; 1513 1514 buf.buffer.Length = 512; 1515 buf.buffer.Pointer = &buf.data[0]; 1516 1517 if (ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer))) 1518 return(buf.buffer.Pointer); 1519 return("(unknown path)"); 1520} 1521 1522/* 1523 * Debugging/bug-avoidance. Avoid trying to fetch info on various 1524 * parts of the namespace. 1525 */ 1526int 1527acpi_avoid(ACPI_HANDLE handle) 1528{ 1529 char *cp, *env, *np; 1530 int len; 1531 1532 np = acpi_name(handle); 1533 if (*np == '\\') 1534 np++; 1535 if ((env = getenv("debug.acpi.avoid")) == NULL) 1536 return(0); 1537 1538 /* scan the avoid list checking for a match */ 1539 cp = env; 1540 for (;;) { 1541 while ((*cp != 0) && isspace(*cp)) 1542 cp++; 1543 if (*cp == 0) 1544 break; 1545 len = 0; 1546 while ((cp[len] != 0) && !isspace(cp[len])) 1547 len++; 1548 if (!strncmp(cp, np, len)) { 1549 freeenv(env); 1550 return(1); 1551 } 1552 cp += len; 1553 } 1554 freeenv(env); 1555 return(0); 1556} 1557 1558/* 1559 * Debugging/bug-avoidance. Disable ACPI subsystem components. 1560 */ 1561int 1562acpi_disabled(char *subsys) 1563{ 1564 char *cp, *env; 1565 int len; 1566 1567 if ((env = getenv("debug.acpi.disable")) == NULL) 1568 return(0); 1569 if (!strcmp(env, "all")) { 1570 freeenv(env); 1571 return(1); 1572 } 1573 1574 /* scan the disable 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, subsys, len)) { 1585 freeenv(env); 1586 return(1); 1587 } 1588 cp += len; 1589 } 1590 freeenv(env); 1591 return(0); 1592} 1593 1594/* 1595 * Device wake capability enable/disable. 1596 */ 1597void 1598acpi_device_enable_wake_capability(ACPI_HANDLE h, int enable) 1599{ 1600 ACPI_OBJECT_LIST ArgList; 1601 ACPI_OBJECT Arg; 1602 1603 /* 1604 * TBD: All Power Resources referenced by elements 2 through N 1605 * of the _PRW object are put into the ON state. 1606 */ 1607 1608 /* 1609 * enable/disable device wake function. 1610 */ 1611 1612 ArgList.Count = 1; 1613 ArgList.Pointer = &Arg; 1614 1615 Arg.Type = ACPI_TYPE_INTEGER; 1616 Arg.Integer.Value = enable; 1617 1618 (void)AcpiEvaluateObject(h, "_PSW", &ArgList, NULL); 1619} 1620 1621void 1622acpi_device_enable_wake_event(ACPI_HANDLE h) 1623{ 1624 struct acpi_softc *sc; 1625 ACPI_STATUS status; 1626 ACPI_BUFFER prw_buffer; 1627 ACPI_OBJECT *res; 1628 1629 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1630 1631 if ((sc = devclass_get_softc(acpi_devclass, 0)) == NULL) { 1632 return; 1633 } 1634 1635 /* 1636 * _PRW object is only required for devices that have the ability 1637 * to wake the system from a system sleeping state. 1638 */ 1639 prw_buffer.Length = ACPI_ALLOCATE_BUFFER; 1640 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer); 1641 if (ACPI_FAILURE(status)) { 1642 return; 1643 } 1644 1645 res = (ACPI_OBJECT *)prw_buffer.Pointer; 1646 if (res == NULL) { 1647 return; 1648 } 1649 1650 if ((res->Type != ACPI_TYPE_PACKAGE) || (res->Package.Count < 2)) { 1651 goto out; 1652 } 1653 1654 /* 1655 * The element 1 of the _PRW object: 1656 * The lowest power system sleeping state that can be entered 1657 * while still providing wake functionality. 1658 * The sleeping state being entered must be greater or equal to 1659 * the power state declared in element 1 of the _PRW object. 1660 */ 1661 if (res->Package.Elements[1].Type != ACPI_TYPE_INTEGER) { 1662 goto out; 1663 } 1664 1665 if (sc->acpi_sstate > res->Package.Elements[1].Integer.Value) { 1666 goto out; 1667 } 1668 1669 /* 1670 * The element 0 of the _PRW object: 1671 */ 1672 switch(res->Package.Elements[0].Type) { 1673 case ACPI_TYPE_INTEGER: 1674 /* 1675 * If the data type of this package element is numeric, then this 1676 * _PRW package element is the bit index in the GPEx_EN, in the 1677 * GPE blocks described in the FADT, of the enable bit that is 1678 * enabled for the wake event. 1679 */ 1680 1681 status = AcpiEnableEvent(res->Package.Elements[0].Integer.Value, 1682 ACPI_EVENT_GPE, ACPI_EVENT_WAKE_ENABLE); 1683 if (ACPI_FAILURE(status)) 1684 printf("%s: EnableEvent Failed\n", __func__); 1685 break; 1686 1687 case ACPI_TYPE_PACKAGE: 1688 /* XXX TBD */ 1689 1690 /* 1691 * If the data type of this package element is a package, then this 1692 * _PRW package element is itself a package containing two 1693 * elements. The first is an object reference to the GPE Block 1694 * device that contains the GPE that will be triggered by the wake 1695 * event. The second element is numeric and it contains the bit 1696 * index in the GPEx_EN, in the GPE Block referenced by the 1697 * first element in the package, of the enable bit that is enabled for 1698 * the wake event. 1699 * For example, if this field is a package then it is of the form: 1700 * Package() {\_SB.PCI0.ISA.GPE, 2} 1701 */ 1702 1703 break; 1704 1705 default: 1706 break; 1707 } 1708 1709out: 1710 if (prw_buffer.Pointer != NULL) 1711 AcpiOsFree(prw_buffer.Pointer); 1712 return; 1713} 1714 1715/* 1716 * Control interface. 1717 * 1718 * We multiplex ioctls for all participating ACPI devices here. Individual 1719 * drivers wanting to be accessible via /dev/acpi should use the register/deregister 1720 * interface to make their handlers visible. 1721 */ 1722struct acpi_ioctl_hook 1723{ 1724 TAILQ_ENTRY(acpi_ioctl_hook) link; 1725 u_long cmd; 1726 int (* fn)(u_long cmd, caddr_t addr, void *arg); 1727 void *arg; 1728}; 1729 1730static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks; 1731static int acpi_ioctl_hooks_initted; 1732 1733/* 1734 * Register an ioctl handler. 1735 */ 1736int 1737acpi_register_ioctl(u_long cmd, int (* fn)(u_long cmd, caddr_t addr, void *arg), void *arg) 1738{ 1739 struct acpi_ioctl_hook *hp; 1740 1741 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL) 1742 return(ENOMEM); 1743 hp->cmd = cmd; 1744 hp->fn = fn; 1745 hp->arg = arg; 1746 if (acpi_ioctl_hooks_initted == 0) { 1747 TAILQ_INIT(&acpi_ioctl_hooks); 1748 acpi_ioctl_hooks_initted = 1; 1749 } 1750 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link); 1751 return(0); 1752} 1753 1754/* 1755 * Deregister an ioctl handler. 1756 */ 1757void 1758acpi_deregister_ioctl(u_long cmd, int (* fn)(u_long cmd, caddr_t addr, void *arg)) 1759{ 1760 struct acpi_ioctl_hook *hp; 1761 1762 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) 1763 if ((hp->cmd == cmd) && (hp->fn == fn)) 1764 break; 1765 1766 if (hp != NULL) { 1767 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link); 1768 free(hp, M_ACPIDEV); 1769 } 1770} 1771 1772static int 1773acpiopen(dev_t dev, int flag, int fmt, struct thread *td) 1774{ 1775 return(0); 1776} 1777 1778static int 1779acpiclose(dev_t dev, int flag, int fmt, struct thread *td) 1780{ 1781 return(0); 1782} 1783 1784static int 1785acpiioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 1786{ 1787 struct acpi_softc *sc; 1788 struct acpi_ioctl_hook *hp; 1789 int error, xerror, state; 1790 1791 ACPI_LOCK; 1792 1793 error = state = 0; 1794 sc = dev->si_drv1; 1795 1796 /* 1797 * Scan the list of registered ioctls, looking for handlers. 1798 */ 1799 if (acpi_ioctl_hooks_initted) { 1800 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) { 1801 if (hp->cmd == cmd) { 1802 xerror = hp->fn(cmd, addr, hp->arg); 1803 if (xerror != 0) 1804 error = xerror; 1805 goto out; 1806 } 1807 } 1808 } 1809 1810 /* 1811 * Core system ioctls. 1812 */ 1813 switch (cmd) { 1814 case ACPIIO_ENABLE: 1815 if (ACPI_FAILURE(acpi_Enable(sc))) 1816 error = ENXIO; 1817 break; 1818 1819 case ACPIIO_DISABLE: 1820 if (ACPI_FAILURE(acpi_Disable(sc))) 1821 error = ENXIO; 1822 break; 1823 1824 case ACPIIO_SETSLPSTATE: 1825 if (!sc->acpi_enabled) { 1826 error = ENXIO; 1827 break; 1828 } 1829 state = *(int *)addr; 1830 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) { 1831 acpi_SetSleepState(sc, state); 1832 } else { 1833 error = EINVAL; 1834 } 1835 break; 1836 1837 default: 1838 if (error == 0) 1839 error = EINVAL; 1840 break; 1841 } 1842 1843out: 1844 ACPI_UNLOCK; 1845 return(error); 1846} 1847 1848static int 1849acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 1850{ 1851 char sleep_state[10]; 1852 int error; 1853 u_int new_state, old_state; 1854 1855 old_state = *(u_int *)oidp->oid_arg1; 1856 if (old_state > ACPI_S_STATES_MAX+1) { 1857 strcpy(sleep_state, "unknown"); 1858 } else { 1859 bzero(sleep_state, sizeof(sleep_state)); 1860 strncpy(sleep_state, sleep_state_names[old_state], 1861 sizeof(sleep_state_names[old_state])); 1862 } 1863 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req); 1864 if (error == 0 && req->newptr != NULL) { 1865 for (new_state = ACPI_STATE_S0; new_state <= ACPI_S_STATES_MAX+1; new_state++) { 1866 if (strncmp(sleep_state, sleep_state_names[new_state], 1867 sizeof(sleep_state)) == 0) 1868 break; 1869 } 1870 if (new_state <= ACPI_S_STATES_MAX+1) { 1871 if (new_state != old_state) { 1872 *(u_int *)oidp->oid_arg1 = new_state; 1873 } 1874 } else { 1875 error = EINVAL; 1876 } 1877 } 1878 return(error); 1879} 1880 1881#ifdef ACPI_DEBUG 1882/* 1883 * Support for parsing debug options from the kernel environment. 1884 * 1885 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers 1886 * by specifying the names of the bits in the debug.acpi.layer and 1887 * debug.acpi.level environment variables. Bits may be unset by 1888 * prefixing the bit name with !. 1889 */ 1890struct debugtag 1891{ 1892 char *name; 1893 UINT32 value; 1894}; 1895 1896static struct debugtag dbg_layer[] = { 1897 {"ACPI_UTILITIES", ACPI_UTILITIES}, 1898 {"ACPI_HARDWARE", ACPI_HARDWARE}, 1899 {"ACPI_EVENTS", ACPI_EVENTS}, 1900 {"ACPI_TABLES", ACPI_TABLES}, 1901 {"ACPI_NAMESPACE", ACPI_NAMESPACE}, 1902 {"ACPI_PARSER", ACPI_PARSER}, 1903 {"ACPI_DISPATCHER", ACPI_DISPATCHER}, 1904 {"ACPI_EXECUTER", ACPI_EXECUTER}, 1905 {"ACPI_RESOURCES", ACPI_RESOURCES}, 1906 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER}, 1907 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES}, 1908 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER}, 1909 1910 {"ACPI_BUS", ACPI_BUS}, 1911 {"ACPI_SYSTEM", ACPI_SYSTEM}, 1912 {"ACPI_POWER", ACPI_POWER}, 1913 {"ACPI_EC", ACPI_EC}, 1914 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER}, 1915 {"ACPI_BATTERY", ACPI_BATTERY}, 1916 {"ACPI_BUTTON", ACPI_BUTTON}, 1917 {"ACPI_PROCESSOR", ACPI_PROCESSOR}, 1918 {"ACPI_THERMAL", ACPI_THERMAL}, 1919 {"ACPI_FAN", ACPI_FAN}, 1920 1921 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS}, 1922 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS}, 1923 {NULL, 0} 1924}; 1925 1926static struct debugtag dbg_level[] = { 1927 {"ACPI_LV_OK", ACPI_LV_OK}, 1928 {"ACPI_LV_INFO", ACPI_LV_INFO}, 1929 {"ACPI_LV_WARN", ACPI_LV_WARN}, 1930 {"ACPI_LV_ERROR", ACPI_LV_ERROR}, 1931 {"ACPI_LV_FATAL", ACPI_LV_FATAL}, 1932 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT}, 1933 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS}, 1934 1935 /* Trace verbosity level 1 [Standard Trace Level] */ 1936 {"ACPI_LV_PARSE", ACPI_LV_PARSE}, 1937 {"ACPI_LV_LOAD", ACPI_LV_LOAD}, 1938 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH}, 1939 {"ACPI_LV_EXEC", ACPI_LV_EXEC}, 1940 {"ACPI_LV_NAMES", ACPI_LV_NAMES}, 1941 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION}, 1942 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD}, 1943 {"ACPI_LV_TABLES", ACPI_LV_TABLES}, 1944 {"ACPI_LV_VALUES", ACPI_LV_VALUES}, 1945 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS}, 1946 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES}, 1947 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS}, 1948 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE}, 1949 {"ACPI_LV_INIT", ACPI_LV_INIT}, 1950 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1}, 1951 1952 /* Trace verbosity level 2 [Function tracing and memory allocation] */ 1953 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS}, 1954 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS}, 1955 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS}, 1956 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2}, 1957 {"ACPI_LV_ALL", ACPI_LV_ALL}, 1958 1959 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */ 1960 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX}, 1961 {"ACPI_LV_THREADS", ACPI_LV_THREADS}, 1962 {"ACPI_LV_IO", ACPI_LV_IO}, 1963 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS}, 1964 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3}, 1965 1966 /* Exceptionally verbose output -- also used in the global "DebugLevel" */ 1967 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE}, 1968 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO}, 1969 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES}, 1970 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS}, 1971 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE}, 1972 {NULL, 0} 1973}; 1974 1975static void 1976acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag) 1977{ 1978 char *ep; 1979 int i, l; 1980 int set; 1981 1982 while (*cp) { 1983 if (isspace(*cp)) { 1984 cp++; 1985 continue; 1986 } 1987 ep = cp; 1988 while (*ep && !isspace(*ep)) 1989 ep++; 1990 if (*cp == '!') { 1991 set = 0; 1992 cp++; 1993 if (cp == ep) 1994 continue; 1995 } else { 1996 set = 1; 1997 } 1998 l = ep - cp; 1999 for (i = 0; tag[i].name != NULL; i++) { 2000 if (!strncmp(cp, tag[i].name, l)) { 2001 if (set) { 2002 *flag |= tag[i].value; 2003 } else { 2004 *flag &= ~tag[i].value; 2005 } 2006 printf("ACPI_DEBUG: set '%s'\n", tag[i].name); 2007 } 2008 } 2009 cp = ep; 2010 } 2011} 2012 2013static void 2014acpi_set_debugging(void *junk) 2015{ 2016 char *cp; 2017 2018 AcpiDbgLayer = 0; 2019 AcpiDbgLevel = 0; 2020 if ((cp = getenv("debug.acpi.layer")) != NULL) { 2021 acpi_parse_debug(cp, &dbg_layer[0], &AcpiDbgLayer); 2022 freeenv(cp); 2023 } 2024 if ((cp = getenv("debug.acpi.level")) != NULL) { 2025 acpi_parse_debug(cp, &dbg_level[0], &AcpiDbgLevel); 2026 freeenv(cp); 2027 } 2028 2029 printf("ACPI debug layer 0x%x debug level 0x%x\n", AcpiDbgLayer, AcpiDbgLevel); 2030} 2031SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging, NULL); 2032#endif 2033 2034static int 2035acpi_pm_func(u_long cmd, void *arg, ...) 2036{ 2037 int state, acpi_state; 2038 int error; 2039 struct acpi_softc *sc; 2040 va_list ap; 2041 2042 error = 0; 2043 switch (cmd) { 2044 case POWER_CMD_SUSPEND: 2045 sc = (struct acpi_softc *)arg; 2046 if (sc == NULL) { 2047 error = EINVAL; 2048 goto out; 2049 } 2050 2051 va_start(ap, arg); 2052 state = va_arg(ap, int); 2053 va_end(ap); 2054 2055 switch (state) { 2056 case POWER_SLEEP_STATE_STANDBY: 2057 acpi_state = sc->acpi_standby_sx; 2058 break; 2059 case POWER_SLEEP_STATE_SUSPEND: 2060 acpi_state = sc->acpi_suspend_sx; 2061 break; 2062 case POWER_SLEEP_STATE_HIBERNATE: 2063 acpi_state = ACPI_STATE_S4; 2064 break; 2065 default: 2066 error = EINVAL; 2067 goto out; 2068 } 2069 2070 acpi_SetSleepState(sc, acpi_state); 2071 break; 2072 2073 default: 2074 error = EINVAL; 2075 goto out; 2076 } 2077 2078out: 2079 return (error); 2080} 2081 2082static void 2083acpi_pm_register(void *arg) 2084{ 2085 int error; 2086 2087 if (!resource_int_value("acpi", 0, "disabled", &error) && 2088 (error != 0)) 2089 return; 2090 2091 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL); 2092} 2093 2094SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0); 2095 2096