1 /*- 2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org> 3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org> 4 * Copyright (c) 2000, 2001 Michael Smith 5 * Copyright (c) 2000 BSDi 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #include "opt_acpi.h" 33 #include <sys/param.h> 34 #include <sys/kernel.h> 35 #include <sys/proc.h> 36 #include <sys/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 59 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices"); 60 61 /* 62 * Hooks for the ACPI CA debugging infrastructure 63 */ 64 #define _COMPONENT ACPI_BUS 65 ACPI_MODULE_NAME("ACPI") 66 67 /* 68 * Character device 69 */ 70 71 static d_open_t acpiopen; 72 static d_close_t acpiclose; 73 static d_ioctl_t acpiioctl; 74 75 #define CDEV_MAJOR 152 76 static struct cdevsw acpi_cdevsw = { 77 .d_open = acpiopen, 78 .d_close = acpiclose, 79 .d_ioctl = acpiioctl, 80 .d_name = "acpi", 81 .d_maj = CDEV_MAJOR, 82 }; 83 84 static const char* sleep_state_names[] = { 85 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"}; 86 87 /* this has to be static, as the softc is gone when we need it */ 88 static int acpi_off_state = ACPI_STATE_S5; 89 90 #if __FreeBSD_version >= 500000 91 struct mtx acpi_mutex; 92 #endif 93 94 static int acpi_modevent(struct module *mod, int event, void *junk); 95 static void acpi_identify(driver_t *driver, device_t parent); 96 static int acpi_probe(device_t dev); 97 static int acpi_attach(device_t dev); 98 static device_t acpi_add_child(device_t bus, int order, const char *name, int unit); 99 static int acpi_print_child(device_t bus, device_t child); 100 static int acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result); 101 static int acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value); 102 static int acpi_set_resource(device_t dev, device_t child, int type, int rid, u_long start, 103 u_long count); 104 static int acpi_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, 105 u_long *countp); 106 static struct resource *acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, 107 u_long start, u_long end, u_long count, u_int flags); 108 static int acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r); 109 static u_int32_t acpi_isa_get_logicalid(device_t dev); 110 static u_int32_t acpi_isa_get_compatid(device_t dev); 111 static int acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids); 112 113 static void acpi_probe_children(device_t bus); 114 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status); 115 116 static void acpi_shutdown_pre_sync(void *arg, int howto); 117 static void acpi_shutdown_final(void *arg, int howto); 118 119 static void acpi_enable_fixed_events(struct acpi_softc *sc); 120 121 static void acpi_system_eventhandler_sleep(void *arg, int state); 122 static void acpi_system_eventhandler_wakeup(void *arg, int state); 123 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); 124 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); 125 126 static int acpi_pm_func(u_long cmd, void *arg, ...); 127 128 static device_method_t acpi_methods[] = { 129 /* Device interface */ 130 DEVMETHOD(device_identify, acpi_identify), 131 DEVMETHOD(device_probe, acpi_probe), 132 DEVMETHOD(device_attach, acpi_attach), 133 DEVMETHOD(device_shutdown, bus_generic_shutdown), 134 DEVMETHOD(device_suspend, bus_generic_suspend), 135 DEVMETHOD(device_resume, bus_generic_resume), 136 137 /* Bus interface */ 138 DEVMETHOD(bus_add_child, acpi_add_child), 139 DEVMETHOD(bus_print_child, acpi_print_child), 140 DEVMETHOD(bus_read_ivar, acpi_read_ivar), 141 DEVMETHOD(bus_write_ivar, acpi_write_ivar), 142 DEVMETHOD(bus_set_resource, acpi_set_resource), 143 DEVMETHOD(bus_get_resource, acpi_get_resource), 144 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource), 145 DEVMETHOD(bus_release_resource, acpi_release_resource), 146 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 147 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 148 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 149 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 150 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 151 152 /* ISA emulation */ 153 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe), 154 155 {0, 0} 156 }; 157 158 static driver_t acpi_driver = { 159 "acpi", 160 acpi_methods, 161 sizeof(struct acpi_softc), 162 }; 163 164 static devclass_t acpi_devclass; 165 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0); 166 MODULE_VERSION(acpi, 100); 167 168 SYSCTL_INT(_debug, OID_AUTO, acpi_debug_layer, CTLFLAG_RW, &AcpiDbgLayer, 0, ""); 169 SYSCTL_INT(_debug, OID_AUTO, acpi_debug_level, CTLFLAG_RW, &AcpiDbgLevel, 0, ""); 170 static int acpi_ca_version = ACPI_CA_VERSION; 171 SYSCTL_INT(_debug, OID_AUTO, acpi_ca_version, CTLFLAG_RD, &acpi_ca_version, 0, ""); 172 173 /* 174 * ACPI can only be loaded as a module by the loader; activating it after 175 * system bootstrap time is not useful, and can be fatal to the system. 176 * It also cannot be unloaded, since the entire system bus heirarchy hangs off it. 177 */ 178 static int 179 acpi_modevent(struct module *mod, int event, void *junk) 180 { 181 switch(event) { 182 case MOD_LOAD: 183 if (!cold) { 184 printf("The ACPI driver cannot be loaded after boot.\n"); 185 return(EPERM); 186 } 187 break; 188 case MOD_UNLOAD: 189 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI) 190 return(EBUSY); 191 break; 192 default: 193 break; 194 } 195 return(0); 196 } 197 198 /* 199 * Detect ACPI, perform early initialisation 200 */ 201 static void 202 acpi_identify(driver_t *driver, device_t parent) 203 { 204 device_t child; 205 int error; 206 #ifdef ACPI_DEBUGGER 207 char *debugpoint; 208 #endif 209 210 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 211 212 if (!cold) 213 return_VOID; 214 215 /* 216 * Check that we haven't been disabled with a hint. 217 */ 218 if (resource_disabled("acpi", 0)) 219 return_VOID; 220 221 /* 222 * Make sure we're not being doubly invoked. 223 */ 224 if (device_find_child(parent, "acpi", 0) != NULL) 225 return_VOID; 226 227 #if __FreeBSD_version >= 500000 228 /* initialise the ACPI mutex */ 229 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF); 230 #endif 231 232 /* 233 * Start up the ACPI CA subsystem. 234 */ 235 #ifdef ACPI_DEBUGGER 236 debugpoint = getenv("debug.acpi.debugger"); 237 if (debugpoint) { 238 if (!strcmp(debugpoint, "init")) 239 acpi_EnterDebugger(); 240 freeenv(debugpoint); 241 } 242 #endif 243 if (ACPI_FAILURE(error = AcpiInitializeSubsystem())) { 244 printf("ACPI: initialisation failed: %s\n", AcpiFormatException(error)); 245 return_VOID; 246 } 247 #ifdef ACPI_DEBUGGER 248 debugpoint = getenv("debug.acpi.debugger"); 249 if (debugpoint) { 250 if (!strcmp(debugpoint, "tables")) 251 acpi_EnterDebugger(); 252 freeenv(debugpoint); 253 } 254 #endif 255 256 if (ACPI_FAILURE(error = AcpiLoadTables())) { 257 printf("ACPI: table load failed: %s\n", AcpiFormatException(error)); 258 return_VOID; 259 } 260 261 /* 262 * Attach the actual ACPI device. 263 */ 264 if ((child = BUS_ADD_CHILD(parent, 0, "acpi", 0)) == NULL) { 265 device_printf(parent, "ACPI: could not attach\n"); 266 return_VOID; 267 } 268 } 269 270 /* 271 * Fetch some descriptive data from ACPI to put in our attach message 272 */ 273 static int 274 acpi_probe(device_t dev) 275 { 276 ACPI_TABLE_HEADER th; 277 char buf[20]; 278 ACPI_STATUS status; 279 int error; 280 ACPI_LOCK_DECL; 281 282 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 283 284 if (power_pm_get_type() != POWER_PM_TYPE_NONE && 285 power_pm_get_type() != POWER_PM_TYPE_ACPI) { 286 device_printf(dev, "Other PM system enabled.\n"); 287 return_VALUE(ENXIO); 288 } 289 290 ACPI_LOCK; 291 292 if (ACPI_FAILURE(status = AcpiGetTableHeader(ACPI_TABLE_XSDT, 1, &th))) { 293 device_printf(dev, "couldn't get XSDT header: %s\n", AcpiFormatException(status)); 294 error = ENXIO; 295 } else { 296 sprintf(buf, "%.6s %.8s", th.OemId, th.OemTableId); 297 device_set_desc_copy(dev, buf); 298 error = 0; 299 } 300 ACPI_UNLOCK; 301 return_VALUE(error); 302 } 303 304 static int 305 acpi_attach(device_t dev) 306 { 307 struct acpi_softc *sc; 308 ACPI_STATUS status; 309 int error; 310 UINT32 flags; 311 char *env; 312 #ifdef ACPI_DEBUGGER 313 char *debugpoint; 314 #endif 315 ACPI_LOCK_DECL; 316 317 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 318 ACPI_LOCK; 319 sc = device_get_softc(dev); 320 bzero(sc, sizeof(*sc)); 321 sc->acpi_dev = dev; 322 323 #ifdef ACPI_DEBUGGER 324 debugpoint = getenv("debug.acpi.debugger"); 325 if (debugpoint) { 326 if (!strcmp(debugpoint, "spaces")) 327 acpi_EnterDebugger(); 328 freeenv(debugpoint); 329 } 330 #endif 331 332 /* 333 * Install the default address space handlers. 334 */ 335 error = ENXIO; 336 if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 337 ACPI_ADR_SPACE_SYSTEM_MEMORY, 338 ACPI_DEFAULT_HANDLER, 339 NULL, NULL))) { 340 device_printf(dev, "could not initialise SystemMemory handler: %s\n", AcpiFormatException(status)); 341 goto out; 342 } 343 if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 344 ACPI_ADR_SPACE_SYSTEM_IO, 345 ACPI_DEFAULT_HANDLER, 346 NULL, NULL))) { 347 device_printf(dev, "could not initialise SystemIO handler: %s\n", AcpiFormatException(status)); 348 goto out; 349 } 350 if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, 351 ACPI_ADR_SPACE_PCI_CONFIG, 352 ACPI_DEFAULT_HANDLER, 353 NULL, NULL))) { 354 device_printf(dev, "could not initialise PciConfig handler: %s\n", AcpiFormatException(status)); 355 goto out; 356 } 357 358 /* 359 * Bring ACPI fully online. 360 * 361 * Note that some systems (specifically, those with namespace evaluation issues 362 * that require the avoidance of parts of the namespace) must avoid running _INI 363 * and _STA on everything, as well as dodging the final object init pass. 364 * 365 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT). 366 * 367 * XXX We should arrange for the object init pass after we have attached all our 368 * child devices, but on many systems it works here. 369 */ 370 #ifdef ACPI_DEBUGGER 371 debugpoint = getenv("debug.acpi.debugger"); 372 if (debugpoint) { 373 if (!strcmp(debugpoint, "enable")) 374 acpi_EnterDebugger(); 375 freeenv(debugpoint); 376 } 377 #endif 378 flags = 0; 379 if (testenv("debug.acpi.avoid")) 380 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; 381 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) { 382 device_printf(dev, "could not enable ACPI: %s\n", AcpiFormatException(status)); 383 goto out; 384 } 385 386 /* 387 * Call the ECDT probe function to provide EC functionality before 388 * the namespace has been evaluated. 389 */ 390 acpi_ec_ecdt_probe(dev); 391 392 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) { 393 device_printf(dev, "could not initialize ACPI objects: %s\n", AcpiFormatException(status)); 394 goto out; 395 } 396 397 /* 398 * Setup our sysctl tree. 399 * 400 * XXX: This doesn't check to make sure that none of these fail. 401 */ 402 sysctl_ctx_init(&sc->acpi_sysctl_ctx); 403 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx, 404 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, 405 device_get_name(dev), CTLFLAG_RD, 0, ""); 406 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 407 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD, 408 0, 0, acpi_supported_sleep_state_sysctl, "A", ""); 409 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 410 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW, 411 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); 412 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 413 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW, 414 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); 415 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 416 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW, 417 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", ""); 418 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 419 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW, 420 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", ""); 421 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 422 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW, 423 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", ""); 424 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 425 OID_AUTO, "sleep_delay", CTLFLAG_RD | CTLFLAG_RW, 426 &sc->acpi_sleep_delay, 0, "sleep delay"); 427 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 428 OID_AUTO, "s4bios", CTLFLAG_RD | CTLFLAG_RW, 429 &sc->acpi_s4bios, 0, "S4BIOS mode"); 430 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 431 OID_AUTO, "verbose", CTLFLAG_RD | CTLFLAG_RW, 432 &sc->acpi_verbose, 0, "verbose mode"); 433 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 434 OID_AUTO, "disable_on_poweroff", CTLFLAG_RD | CTLFLAG_RW, 435 &sc->acpi_disable_on_poweroff, 0, "ACPI subsystem disable on poweroff"); 436 sc->acpi_disable_on_poweroff = 1; 437 sc->acpi_sleep_delay = 0; 438 sc->acpi_s4bios = 1; 439 if (bootverbose) 440 sc->acpi_verbose = 1; 441 if ((env = getenv("hw.acpi.verbose")) && strcmp(env, "0")) { 442 sc->acpi_verbose = 1; 443 freeenv(env); 444 } 445 446 /* 447 * Dispatch the default sleep state to devices. 448 * TBD: should be configured from userland policy manager. 449 */ 450 sc->acpi_power_button_sx = ACPI_POWER_BUTTON_DEFAULT_SX; 451 sc->acpi_sleep_button_sx = ACPI_SLEEP_BUTTON_DEFAULT_SX; 452 sc->acpi_lid_switch_sx = ACPI_LID_SWITCH_DEFAULT_SX; 453 sc->acpi_standby_sx = ACPI_STATE_S1; 454 sc->acpi_suspend_sx = ACPI_STATE_S3; 455 456 acpi_enable_fixed_events(sc); 457 458 /* 459 * Scan the namespace and attach/initialise children. 460 */ 461 #ifdef ACPI_DEBUGGER 462 debugpoint = getenv("debug.acpi.debugger"); 463 if (debugpoint) { 464 if (!strcmp(debugpoint, "probe")) 465 acpi_EnterDebugger(); 466 freeenv(debugpoint); 467 } 468 #endif 469 470 /* 471 * Register our shutdown handlers 472 */ 473 EVENTHANDLER_REGISTER(shutdown_pre_sync, acpi_shutdown_pre_sync, sc, SHUTDOWN_PRI_LAST); 474 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc, SHUTDOWN_PRI_LAST); 475 476 /* 477 * Register our acpi event handlers. 478 * XXX should be configurable eg. via userland policy manager. 479 */ 480 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep, sc, ACPI_EVENT_PRI_LAST); 481 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup, sc, ACPI_EVENT_PRI_LAST); 482 483 /* 484 * Flag our initial states. 485 */ 486 sc->acpi_enabled = 1; 487 sc->acpi_sstate = ACPI_STATE_S0; 488 sc->acpi_sleep_disabled = 0; 489 490 /* 491 * Create the control device 492 */ 493 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644, 494 "acpi"); 495 sc->acpi_dev_t->si_drv1 = sc; 496 497 #ifdef ACPI_DEBUGGER 498 debugpoint = getenv("debug.acpi.debugger"); 499 if (debugpoint) { 500 if (!strcmp(debugpoint, "running")) 501 acpi_EnterDebugger(); 502 freeenv(debugpoint); 503 } 504 #endif 505 506 #ifdef ACPI_USE_THREADS 507 if ((error = acpi_task_thread_init())) { 508 goto out; 509 } 510 #endif 511 512 if ((error = acpi_machdep_init(dev))) { 513 goto out; 514 } 515 516 /* Register ACPI again to pass the correct argument of pm_func. */ 517 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc); 518 519 if (!acpi_disabled("bus")) 520 acpi_probe_children(dev); 521 522 error = 0; 523 524 out: 525 ACPI_UNLOCK; 526 return_VALUE(error); 527 } 528 529 /* 530 * Handle a new device being added 531 */ 532 static device_t 533 acpi_add_child(device_t bus, int order, const char *name, int unit) 534 { 535 struct acpi_device *ad; 536 device_t child; 537 538 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT)) == NULL) 539 return(NULL); 540 bzero(ad, sizeof(*ad)); 541 542 resource_list_init(&ad->ad_rl); 543 544 child = device_add_child_ordered(bus, order, name, unit); 545 if (child != NULL) 546 device_set_ivars(child, ad); 547 return(child); 548 } 549 550 static int 551 acpi_print_child(device_t bus, device_t child) 552 { 553 struct acpi_device *adev = device_get_ivars(child); 554 struct resource_list *rl = &adev->ad_rl; 555 int retval = 0; 556 557 retval += bus_print_child_header(bus, child); 558 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx"); 559 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx"); 560 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 561 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld"); 562 retval += bus_print_child_footer(bus, child); 563 564 return(retval); 565 } 566 567 568 /* 569 * Handle per-device ivars 570 */ 571 static int 572 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) 573 { 574 struct acpi_device *ad; 575 576 if ((ad = device_get_ivars(child)) == NULL) { 577 printf("device has no ivars\n"); 578 return(ENOENT); 579 } 580 581 switch(index) { 582 /* ACPI ivars */ 583 case ACPI_IVAR_HANDLE: 584 *(ACPI_HANDLE *)result = ad->ad_handle; 585 break; 586 case ACPI_IVAR_MAGIC: 587 *(int *)result = ad->ad_magic; 588 break; 589 case ACPI_IVAR_PRIVATE: 590 *(void **)result = ad->ad_private; 591 break; 592 593 /* ISA compatibility */ 594 case ISA_IVAR_VENDORID: 595 case ISA_IVAR_SERIAL: 596 case ISA_IVAR_COMPATID: 597 *(int *)result = -1; 598 break; 599 600 case ISA_IVAR_LOGICALID: 601 *(int *)result = acpi_isa_get_logicalid(child); 602 break; 603 604 default: 605 return(ENOENT); 606 } 607 return(0); 608 } 609 610 static int 611 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value) 612 { 613 struct acpi_device *ad; 614 615 if ((ad = device_get_ivars(child)) == NULL) { 616 printf("device has no ivars\n"); 617 return(ENOENT); 618 } 619 620 switch(index) { 621 /* ACPI ivars */ 622 case ACPI_IVAR_HANDLE: 623 ad->ad_handle = (ACPI_HANDLE)value; 624 break; 625 case ACPI_IVAR_MAGIC: 626 ad->ad_magic = (int )value; 627 break; 628 case ACPI_IVAR_PRIVATE: 629 ad->ad_private = (void *)value; 630 break; 631 632 default: 633 panic("bad ivar write request (%d)", index); 634 return(ENOENT); 635 } 636 return(0); 637 } 638 639 /* 640 * Handle child resource allocation/removal 641 */ 642 static int 643 acpi_set_resource(device_t dev, device_t child, int type, int rid, u_long start, u_long count) 644 { 645 struct acpi_device *ad = device_get_ivars(child); 646 struct resource_list *rl = &ad->ad_rl; 647 648 resource_list_add(rl, type, rid, start, start + count -1, count); 649 650 return(0); 651 } 652 653 static int 654 acpi_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, u_long *countp) 655 { 656 struct acpi_device *ad = device_get_ivars(child); 657 struct resource_list *rl = &ad->ad_rl; 658 struct resource_list_entry *rle; 659 660 rle = resource_list_find(rl, type, rid); 661 if (!rle) 662 return(ENOENT); 663 664 if (startp) 665 *startp = rle->start; 666 if (countp) 667 *countp = rle->count; 668 669 return(0); 670 } 671 672 static struct resource * 673 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, 674 u_long start, u_long end, u_long count, u_int flags) 675 { 676 struct acpi_device *ad = device_get_ivars(child); 677 struct resource_list *rl = &ad->ad_rl; 678 679 return(resource_list_alloc(rl, bus, child, type, rid, start, end, count, flags)); 680 } 681 682 static int 683 acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r) 684 { 685 struct acpi_device *ad = device_get_ivars(child); 686 struct resource_list *rl = &ad->ad_rl; 687 688 return(resource_list_release(rl, bus, child, type, rid, r)); 689 } 690 691 /* 692 * Handle ISA-like devices probing for a PnP ID to match. 693 */ 694 #define PNP_EISAID(s) \ 695 ((((s[0] - '@') & 0x1f) << 2) \ 696 | (((s[1] - '@') & 0x18) >> 3) \ 697 | (((s[1] - '@') & 0x07) << 13) \ 698 | (((s[2] - '@') & 0x1f) << 8) \ 699 | (PNP_HEXTONUM(s[4]) << 16) \ 700 | (PNP_HEXTONUM(s[3]) << 20) \ 701 | (PNP_HEXTONUM(s[6]) << 24) \ 702 | (PNP_HEXTONUM(s[5]) << 28)) 703 704 static u_int32_t 705 acpi_isa_get_logicalid(device_t dev) 706 { 707 ACPI_HANDLE h; 708 ACPI_DEVICE_INFO devinfo; 709 ACPI_BUFFER buf = {sizeof(devinfo), &devinfo}; 710 ACPI_STATUS error; 711 u_int32_t pnpid; 712 ACPI_LOCK_DECL; 713 714 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 715 716 pnpid = 0; 717 ACPI_LOCK; 718 719 /* Fetch and validate the HID. */ 720 if ((h = acpi_get_handle(dev)) == NULL) 721 goto out; 722 error = AcpiGetObjectInfo(h, &buf); 723 if (ACPI_FAILURE(error)) 724 goto out; 725 if ((devinfo.Valid & ACPI_VALID_HID) == 0) 726 goto out; 727 728 pnpid = PNP_EISAID(devinfo.HardwareId.Value); 729 out: 730 ACPI_UNLOCK; 731 return_VALUE(pnpid); 732 } 733 734 static u_int32_t 735 acpi_isa_get_compatid(device_t dev) 736 { 737 ACPI_HANDLE h; 738 ACPI_STATUS error; 739 u_int32_t pnpid; 740 ACPI_LOCK_DECL; 741 742 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 743 744 pnpid = 0; 745 ACPI_LOCK; 746 747 /* fetch and validate the HID */ 748 if ((h = acpi_get_handle(dev)) == NULL) 749 goto out; 750 if (ACPI_FAILURE(error = acpi_EvaluateInteger(h, "_CID", &pnpid))) 751 goto out; 752 753 out: 754 ACPI_UNLOCK; 755 return_VALUE(pnpid); 756 } 757 758 759 static int 760 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids) 761 { 762 int result; 763 u_int32_t lid, cid; 764 765 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 766 767 /* 768 * ISA-style drivers attached to ACPI may persist and 769 * probe manually if we return ENOENT. We never want 770 * that to happen, so don't ever return it. 771 */ 772 result = ENXIO; 773 774 /* scan the supplied IDs for a match */ 775 lid = acpi_isa_get_logicalid(child); 776 cid = acpi_isa_get_compatid(child); 777 while (ids && ids->ip_id) { 778 if (lid == ids->ip_id || cid == ids->ip_id) { 779 result = 0; 780 goto out; 781 } 782 ids++; 783 } 784 out: 785 return_VALUE(result); 786 } 787 788 /* 789 * Scan relevant portions of the ACPI namespace and attach child devices. 790 * 791 * Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and \_SB_ scopes, 792 * and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec. 793 */ 794 static void 795 acpi_probe_children(device_t bus) 796 { 797 ACPI_HANDLE parent; 798 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL}; 799 int i; 800 801 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 802 ACPI_ASSERTLOCK; 803 804 /* 805 * Create any static children by calling device identify methods. 806 */ 807 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n")); 808 bus_generic_probe(bus); 809 810 /* 811 * Scan the namespace and insert placeholders for all the devices that 812 * we find. 813 * 814 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because 815 * we want to create nodes for all devices, not just those that are currently 816 * present. (This assumes that we don't want to create/remove devices as they 817 * appear, which might be smarter.) 818 */ 819 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n")); 820 for (i = 0; scopes[i] != NULL; i++) 821 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent))) 822 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, acpi_probe_child, bus, NULL); 823 824 /* 825 * Scan all of the child devices we have created and let them probe/attach. 826 */ 827 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n")); 828 bus_generic_attach(bus); 829 830 /* 831 * Some of these children may have attached others as part of their attach 832 * process (eg. the root PCI bus driver), so rescan. 833 */ 834 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n")); 835 bus_generic_attach(bus); 836 837 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n")); 838 return_VOID; 839 } 840 841 /* 842 * Evaluate a child device and determine whether we might attach a device to 843 * it. 844 */ 845 static ACPI_STATUS 846 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 847 { 848 ACPI_OBJECT_TYPE type; 849 device_t child, bus = (device_t)context; 850 851 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 852 853 /* 854 * Skip this device if we think we'll have trouble with it. 855 */ 856 if (acpi_avoid(handle)) 857 return_ACPI_STATUS(AE_OK); 858 859 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) { 860 switch(type) { 861 case ACPI_TYPE_DEVICE: 862 case ACPI_TYPE_PROCESSOR: 863 case ACPI_TYPE_THERMAL: 864 case ACPI_TYPE_POWER: 865 if (acpi_disabled("children")) 866 break; 867 /* 868 * Create a placeholder device for this node. Sort the placeholder 869 * so that the probe/attach passes will run breadth-first. 870 */ 871 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", acpi_name(handle))); 872 child = BUS_ADD_CHILD(bus, level * 10, NULL, -1); 873 if (child == NULL) 874 break; 875 acpi_set_handle(child, handle); 876 877 /* 878 * Check that the device is present. If it's not present, 879 * leave it disabled (so that we have a device_t attached to 880 * the handle, but we don't probe it). 881 */ 882 if ((type == ACPI_TYPE_DEVICE) && (!acpi_DeviceIsPresent(child))) { 883 device_disable(child); 884 break; 885 } 886 887 /* 888 * Get the device's resource settings and attach them. 889 * Note that if the device has _PRS but no _CRS, we need 890 * to decide when it's appropriate to try to configure the 891 * device. Ignore the return value here; it's OK for the 892 * device not to have any resources. 893 */ 894 acpi_parse_resources(child, handle, &acpi_res_parse_set); 895 896 /* if we're debugging, probe/attach now rather than later */ 897 ACPI_DEBUG_EXEC(device_probe_and_attach(child)); 898 break; 899 } 900 } 901 return_ACPI_STATUS(AE_OK); 902 } 903 904 static void 905 acpi_shutdown_pre_sync(void *arg, int howto) 906 { 907 908 struct acpi_softc *sc = arg; 909 910 ACPI_ASSERTLOCK; 911 912 /* 913 * Disable all ACPI events before soft off, otherwise the system 914 * will be turned on again on some laptops. 915 * 916 * XXX this should probably be restricted to masking some events just 917 * before powering down, since we may still need ACPI during the 918 * shutdown process. 919 */ 920 if (sc->acpi_disable_on_poweroff) 921 acpi_Disable(sc); 922 } 923 924 static void 925 acpi_shutdown_final(void *arg, int howto) 926 { 927 ACPI_STATUS status; 928 929 ACPI_ASSERTLOCK; 930 931 if (howto & RB_POWEROFF) { 932 printf("Powering system off using ACPI\n"); 933 if (ACPI_FAILURE(status = AcpiEnterSleepStatePrep(acpi_off_state))) { 934 printf("AcpiEnterSleepStatePrep failed - %s\n", 935 AcpiFormatException(status)); 936 return; 937 } 938 if (ACPI_FAILURE(status = AcpiEnterSleepState(acpi_off_state))) { 939 printf("ACPI power-off failed - %s\n", AcpiFormatException(status)); 940 } else { 941 DELAY(1000000); 942 printf("ACPI power-off failed - timeout\n"); 943 } 944 } else { 945 printf("Shutting down ACPI\n"); 946 AcpiTerminate(); 947 } 948 } 949 950 static void 951 acpi_enable_fixed_events(struct acpi_softc *sc) 952 { 953 static int first_time = 1; 954 #define MSGFORMAT "%s button is handled as a fixed feature programming model.\n" 955 956 ACPI_ASSERTLOCK; 957 958 /* Enable and clear fixed events and install handlers. */ 959 if ((AcpiGbl_FADT != NULL) && (AcpiGbl_FADT->PwrButton == 0)) { 960 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON, 961 acpi_eventhandler_power_button_for_sleep, sc); 962 if (first_time) { 963 device_printf(sc->acpi_dev, MSGFORMAT, "power"); 964 } 965 } 966 if ((AcpiGbl_FADT != NULL) && (AcpiGbl_FADT->SleepButton == 0)) { 967 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON, 968 acpi_eventhandler_sleep_button_for_sleep, sc); 969 if (first_time) { 970 device_printf(sc->acpi_dev, MSGFORMAT, "sleep"); 971 } 972 } 973 974 first_time = 0; 975 } 976 977 /* 978 * Returns true if the device is actually present and should 979 * be attached to. This requires the present, enabled, UI-visible 980 * and diagnostics-passed bits to be set. 981 */ 982 BOOLEAN 983 acpi_DeviceIsPresent(device_t dev) 984 { 985 ACPI_HANDLE h; 986 ACPI_DEVICE_INFO devinfo; 987 ACPI_BUFFER buf = {sizeof(devinfo), &devinfo}; 988 ACPI_STATUS error; 989 990 ACPI_ASSERTLOCK; 991 992 if ((h = acpi_get_handle(dev)) == NULL) 993 return(FALSE); 994 error = AcpiGetObjectInfo(h, &buf); 995 if (ACPI_FAILURE(error)) 996 return(FALSE); 997 /* if no _STA method, must be present */ 998 if ((devinfo.Valid & ACPI_VALID_STA) == 0) 999 return(TRUE); 1000 /* return true for 'present' and 'functioning' */ 1001 if ((devinfo.CurrentStatus & 0x9) == 0x9) 1002 return(TRUE); 1003 return(FALSE); 1004 } 1005 1006 /* 1007 * Returns true if the battery is actually present and inserted. 1008 */ 1009 BOOLEAN 1010 acpi_BatteryIsPresent(device_t dev) 1011 { 1012 ACPI_HANDLE h; 1013 ACPI_DEVICE_INFO devinfo; 1014 ACPI_BUFFER buf = {sizeof(devinfo), &devinfo}; 1015 ACPI_STATUS error; 1016 1017 ACPI_ASSERTLOCK; 1018 1019 if ((h = acpi_get_handle(dev)) == NULL) 1020 return(FALSE); 1021 error = AcpiGetObjectInfo(h, &buf); 1022 if (ACPI_FAILURE(error)) 1023 return(FALSE); 1024 /* if no _STA method, must be present */ 1025 if ((devinfo.Valid & ACPI_VALID_STA) == 0) 1026 return(TRUE); 1027 /* return true for 'present' and 'functioning' */ 1028 if ((devinfo.CurrentStatus & 0x19) == 0x19) 1029 return(TRUE); 1030 return(FALSE); 1031 } 1032 1033 /* 1034 * Match a HID string against a device 1035 */ 1036 BOOLEAN 1037 acpi_MatchHid(device_t dev, char *hid) 1038 { 1039 ACPI_HANDLE h; 1040 ACPI_DEVICE_INFO devinfo; 1041 ACPI_BUFFER buf = {sizeof(devinfo), &devinfo}; 1042 ACPI_STATUS error; 1043 int cid; 1044 1045 ACPI_ASSERTLOCK; 1046 1047 if (hid == NULL) 1048 return(FALSE); 1049 if ((h = acpi_get_handle(dev)) == NULL) 1050 return(FALSE); 1051 error = AcpiGetObjectInfo(h, &buf); 1052 if (ACPI_FAILURE(error)) 1053 return(FALSE); 1054 if ((devinfo.Valid & ACPI_VALID_HID) != 0 && 1055 strcmp(hid, devinfo.HardwareId.Value) == 0) 1056 return(TRUE); 1057 if (ACPI_FAILURE(error = acpi_EvaluateInteger(h, "_CID", &cid))) 1058 return(FALSE); 1059 if (cid == PNP_EISAID(hid)) 1060 return(TRUE); 1061 return(FALSE); 1062 } 1063 1064 /* 1065 * Return the handle of a named object within our scope, ie. that of (parent) 1066 * or one if its parents. 1067 */ 1068 ACPI_STATUS 1069 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result) 1070 { 1071 ACPI_HANDLE r; 1072 ACPI_STATUS status; 1073 1074 ACPI_ASSERTLOCK; 1075 1076 /* walk back up the tree to the root */ 1077 for (;;) { 1078 if (ACPI_SUCCESS(status = AcpiGetHandle(parent, path, &r))) { 1079 *result = r; 1080 return(AE_OK); 1081 } 1082 if (status != AE_NOT_FOUND) 1083 return(AE_OK); 1084 if (ACPI_FAILURE(AcpiGetParent(parent, &r))) 1085 return(AE_NOT_FOUND); 1086 parent = r; 1087 } 1088 } 1089 1090 /* 1091 * Allocate a buffer with a preset data size. 1092 */ 1093 ACPI_BUFFER * 1094 acpi_AllocBuffer(int size) 1095 { 1096 ACPI_BUFFER *buf; 1097 1098 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL) 1099 return(NULL); 1100 buf->Length = size; 1101 buf->Pointer = (void *)(buf + 1); 1102 return(buf); 1103 } 1104 1105 /* 1106 * Evaluate a path that should return an integer. 1107 */ 1108 ACPI_STATUS 1109 acpi_EvaluateInteger(ACPI_HANDLE handle, char *path, int *number) 1110 { 1111 ACPI_STATUS error; 1112 ACPI_BUFFER buf; 1113 ACPI_OBJECT param; 1114 1115 ACPI_ASSERTLOCK; 1116 1117 if (handle == NULL) 1118 handle = ACPI_ROOT_OBJECT; 1119 1120 /* 1121 * Assume that what we've been pointed at is an Integer object, or 1122 * a method that will return an Integer. 1123 */ 1124 buf.Pointer = ¶m; 1125 buf.Length = sizeof(param); 1126 if (ACPI_SUCCESS(error = AcpiEvaluateObject(handle, path, NULL, &buf))) { 1127 if (param.Type == ACPI_TYPE_INTEGER) { 1128 *number = param.Integer.Value; 1129 } else { 1130 error = AE_TYPE; 1131 } 1132 } 1133 1134 /* 1135 * In some applications, a method that's expected to return an Integer 1136 * may instead return a Buffer (probably to simplify some internal 1137 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer, 1138 * convert it into an Integer as best we can. 1139 * 1140 * This is a hack. 1141 */ 1142 if (error == AE_BUFFER_OVERFLOW) { 1143 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) { 1144 error = AE_NO_MEMORY; 1145 } else { 1146 if (ACPI_SUCCESS(error = AcpiEvaluateObject(handle, path, NULL, &buf))) { 1147 error = acpi_ConvertBufferToInteger(&buf, number); 1148 } 1149 } 1150 AcpiOsFree(buf.Pointer); 1151 } 1152 return(error); 1153 } 1154 1155 ACPI_STATUS 1156 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, int *number) 1157 { 1158 ACPI_OBJECT *p; 1159 int i; 1160 1161 p = (ACPI_OBJECT *)bufp->Pointer; 1162 if (p->Type == ACPI_TYPE_INTEGER) { 1163 *number = p->Integer.Value; 1164 return(AE_OK); 1165 } 1166 if (p->Type != ACPI_TYPE_BUFFER) 1167 return(AE_TYPE); 1168 if (p->Buffer.Length > sizeof(int)) 1169 return(AE_BAD_DATA); 1170 *number = 0; 1171 for (i = 0; i < p->Buffer.Length; i++) 1172 *number += (*(p->Buffer.Pointer + i) << (i * 8)); 1173 return(AE_OK); 1174 } 1175 1176 /* 1177 * Iterate over the elements of an a package object, calling the supplied 1178 * function for each element. 1179 * 1180 * XXX possible enhancement might be to abort traversal on error. 1181 */ 1182 ACPI_STATUS 1183 acpi_ForeachPackageObject(ACPI_OBJECT *pkg, void (* func)(ACPI_OBJECT *comp, void *arg), void *arg) 1184 { 1185 ACPI_OBJECT *comp; 1186 int i; 1187 1188 if ((pkg == NULL) || (pkg->Type != ACPI_TYPE_PACKAGE)) 1189 return(AE_BAD_PARAMETER); 1190 1191 /* iterate over components */ 1192 for (i = 0, comp = pkg->Package.Elements; i < pkg->Package.Count; i++, comp++) 1193 func(comp, arg); 1194 1195 return(AE_OK); 1196 } 1197 1198 /* 1199 * Find the (index)th resource object in a set. 1200 */ 1201 ACPI_STATUS 1202 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp) 1203 { 1204 ACPI_RESOURCE *rp; 1205 int i; 1206 1207 rp = (ACPI_RESOURCE *)buf->Pointer; 1208 i = index; 1209 while (i-- > 0) { 1210 /* range check */ 1211 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 1212 return(AE_BAD_PARAMETER); 1213 /* check for terminator */ 1214 if ((rp->Id == ACPI_RSTYPE_END_TAG) || 1215 (rp->Length == 0)) 1216 return(AE_NOT_FOUND); 1217 rp = ACPI_RESOURCE_NEXT(rp); 1218 } 1219 if (resp != NULL) 1220 *resp = rp; 1221 return(AE_OK); 1222 } 1223 1224 /* 1225 * Append an ACPI_RESOURCE to an ACPI_BUFFER. 1226 * 1227 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER 1228 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible 1229 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of 1230 * resources. 1231 */ 1232 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512 1233 1234 ACPI_STATUS 1235 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res) 1236 { 1237 ACPI_RESOURCE *rp; 1238 void *newp; 1239 1240 /* 1241 * Initialise the buffer if necessary. 1242 */ 1243 if (buf->Pointer == NULL) { 1244 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE; 1245 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL) 1246 return(AE_NO_MEMORY); 1247 rp = (ACPI_RESOURCE *)buf->Pointer; 1248 rp->Id = ACPI_RSTYPE_END_TAG; 1249 rp->Length = 0; 1250 } 1251 if (res == NULL) 1252 return(AE_OK); 1253 1254 /* 1255 * Scan the current buffer looking for the terminator. 1256 * This will either find the terminator or hit the end 1257 * of the buffer and return an error. 1258 */ 1259 rp = (ACPI_RESOURCE *)buf->Pointer; 1260 for (;;) { 1261 /* range check, don't go outside the buffer */ 1262 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 1263 return(AE_BAD_PARAMETER); 1264 if ((rp->Id == ACPI_RSTYPE_END_TAG) || 1265 (rp->Length == 0)) { 1266 break; 1267 } 1268 rp = ACPI_RESOURCE_NEXT(rp); 1269 } 1270 1271 /* 1272 * Check the size of the buffer and expand if required. 1273 * 1274 * Required size is: 1275 * size of existing resources before terminator + 1276 * size of new resource and header + 1277 * size of terminator. 1278 * 1279 * Note that this loop should really only run once, unless 1280 * for some reason we are stuffing a *really* huge resource. 1281 */ 1282 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) + 1283 res->Length + ACPI_RESOURCE_LENGTH_NO_DATA + 1284 ACPI_RESOURCE_LENGTH) >= buf->Length) { 1285 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL) 1286 return(AE_NO_MEMORY); 1287 bcopy(buf->Pointer, newp, buf->Length); 1288 rp = (ACPI_RESOURCE *)((u_int8_t *)newp + 1289 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer)); 1290 AcpiOsFree(buf->Pointer); 1291 buf->Pointer = newp; 1292 buf->Length += buf->Length; 1293 } 1294 1295 /* 1296 * Insert the new resource. 1297 */ 1298 bcopy(res, rp, res->Length + ACPI_RESOURCE_LENGTH_NO_DATA); 1299 1300 /* 1301 * And add the terminator. 1302 */ 1303 rp = ACPI_RESOURCE_NEXT(rp); 1304 rp->Id = ACPI_RSTYPE_END_TAG; 1305 rp->Length = 0; 1306 1307 return(AE_OK); 1308 } 1309 1310 /* 1311 * Set interrupt model. 1312 */ 1313 ACPI_STATUS 1314 acpi_SetIntrModel(int model) 1315 { 1316 ACPI_OBJECT_LIST ArgList; 1317 ACPI_OBJECT Arg; 1318 1319 Arg.Type = ACPI_TYPE_INTEGER; 1320 Arg.Integer.Value = model; 1321 ArgList.Count = 1; 1322 ArgList.Pointer = &Arg; 1323 return (AcpiEvaluateObject(ACPI_ROOT_OBJECT, "_PIC", &ArgList, NULL)); 1324 } 1325 1326 #define ACPI_MINIMUM_AWAKETIME 5 1327 1328 static void 1329 acpi_sleep_enable(void *arg) 1330 { 1331 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0; 1332 } 1333 1334 /* 1335 * Set the system sleep state 1336 * 1337 * Currently we only support S1 and S5 1338 */ 1339 ACPI_STATUS 1340 acpi_SetSleepState(struct acpi_softc *sc, int state) 1341 { 1342 ACPI_STATUS status = AE_OK; 1343 UINT8 TypeA; 1344 UINT8 TypeB; 1345 1346 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 1347 ACPI_ASSERTLOCK; 1348 1349 if (sc->acpi_sstate != ACPI_STATE_S0) 1350 return_ACPI_STATUS(AE_BAD_PARAMETER); /* avoid reentry */ 1351 1352 if (sc->acpi_sleep_disabled) 1353 return_ACPI_STATUS(AE_OK); 1354 1355 switch (state) { 1356 case ACPI_STATE_S0: /* XXX only for testing */ 1357 if (ACPI_FAILURE(status = AcpiEnterSleepState((UINT8)state))) { 1358 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status)); 1359 } 1360 break; 1361 1362 case ACPI_STATE_S1: 1363 case ACPI_STATE_S2: 1364 case ACPI_STATE_S3: 1365 case ACPI_STATE_S4: 1366 if (ACPI_FAILURE(status = AcpiGetSleepTypeData((UINT8)state, &TypeA, &TypeB))) { 1367 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n", AcpiFormatException(status)); 1368 break; 1369 } 1370 1371 sc->acpi_sstate = state; 1372 sc->acpi_sleep_disabled = 1; 1373 1374 /* 1375 * Inform all devices that we are going to sleep. 1376 */ 1377 if (DEVICE_SUSPEND(root_bus) != 0) { 1378 /* 1379 * Re-wake the system. 1380 * 1381 * XXX note that a better two-pass approach with a 'veto' pass 1382 * followed by a "real thing" pass would be better, but the 1383 * current bus interface does not provide for this. 1384 */ 1385 DEVICE_RESUME(root_bus); 1386 return_ACPI_STATUS(AE_ERROR); 1387 } 1388 1389 if (ACPI_FAILURE(status = AcpiEnterSleepStatePrep(state))) { 1390 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 1391 AcpiFormatException(status)); 1392 break; 1393 } 1394 1395 if (sc->acpi_sleep_delay > 0) { 1396 DELAY(sc->acpi_sleep_delay * 1000000); 1397 } 1398 1399 if (state != ACPI_STATE_S1) { 1400 acpi_sleep_machdep(sc, state); 1401 1402 /* AcpiEnterSleepState() maybe incompleted, unlock here if locked. */ 1403 if (1/*AcpiGbl_AcpiMutexInfo[ACPI_MTX_HARDWARE].OwnerId != ACPI_MUTEX_NOT_ACQUIRED*/) { 1404 AcpiUtReleaseMutex(ACPI_MTX_HARDWARE); 1405 } 1406 1407 /* Re-enable ACPI hardware on wakeup from sleep state 4. */ 1408 if (state == ACPI_STATE_S4) { 1409 AcpiEnable(); 1410 } 1411 } else { 1412 if (ACPI_FAILURE(status = AcpiEnterSleepState((UINT8)state))) { 1413 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status)); 1414 break; 1415 } 1416 } 1417 AcpiLeaveSleepState((UINT8)state); 1418 DEVICE_RESUME(root_bus); 1419 sc->acpi_sstate = ACPI_STATE_S0; 1420 acpi_enable_fixed_events(sc); 1421 break; 1422 1423 case ACPI_STATE_S5: 1424 /* 1425 * Shut down cleanly and power off. This will call us back through the 1426 * shutdown handlers. 1427 */ 1428 shutdown_nice(RB_POWEROFF); 1429 break; 1430 1431 default: 1432 status = AE_BAD_PARAMETER; 1433 break; 1434 } 1435 1436 if (sc->acpi_sleep_disabled) 1437 timeout(acpi_sleep_enable, (caddr_t)sc, hz * ACPI_MINIMUM_AWAKETIME); 1438 1439 return_ACPI_STATUS(status); 1440 } 1441 1442 /* 1443 * Enable/Disable ACPI 1444 */ 1445 ACPI_STATUS 1446 acpi_Enable(struct acpi_softc *sc) 1447 { 1448 ACPI_STATUS status; 1449 u_int32_t flags; 1450 1451 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1452 ACPI_ASSERTLOCK; 1453 1454 flags = ACPI_NO_ADDRESS_SPACE_INIT | ACPI_NO_HARDWARE_INIT | 1455 ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; 1456 if (!sc->acpi_enabled) { 1457 status = AcpiEnableSubsystem(flags); 1458 } else { 1459 status = AE_OK; 1460 } 1461 if (status == AE_OK) 1462 sc->acpi_enabled = 1; 1463 return_ACPI_STATUS(status); 1464 } 1465 1466 ACPI_STATUS 1467 acpi_Disable(struct acpi_softc *sc) 1468 { 1469 ACPI_STATUS status; 1470 1471 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1472 ACPI_ASSERTLOCK; 1473 1474 if (sc->acpi_enabled) { 1475 status = AcpiDisable(); 1476 } else { 1477 status = AE_OK; 1478 } 1479 if (status == AE_OK) 1480 sc->acpi_enabled = 0; 1481 return_ACPI_STATUS(status); 1482 } 1483 1484 /* 1485 * ACPI Event Handlers 1486 */ 1487 1488 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */ 1489 1490 static void 1491 acpi_system_eventhandler_sleep(void *arg, int state) 1492 { 1493 ACPI_LOCK_DECL; 1494 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 1495 1496 ACPI_LOCK; 1497 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) 1498 acpi_SetSleepState((struct acpi_softc *)arg, state); 1499 ACPI_UNLOCK; 1500 return_VOID; 1501 } 1502 1503 static void 1504 acpi_system_eventhandler_wakeup(void *arg, int state) 1505 { 1506 ACPI_LOCK_DECL; 1507 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 1508 1509 /* Well, what to do? :-) */ 1510 1511 ACPI_LOCK; 1512 ACPI_UNLOCK; 1513 1514 return_VOID; 1515 } 1516 1517 /* 1518 * ACPICA Event Handlers (FixedEvent, also called from button notify handler) 1519 */ 1520 UINT32 1521 acpi_eventhandler_power_button_for_sleep(void *context) 1522 { 1523 struct acpi_softc *sc = (struct acpi_softc *)context; 1524 1525 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1526 1527 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx); 1528 1529 return_VALUE(ACPI_INTERRUPT_HANDLED); 1530 } 1531 1532 UINT32 1533 acpi_eventhandler_power_button_for_wakeup(void *context) 1534 { 1535 struct acpi_softc *sc = (struct acpi_softc *)context; 1536 1537 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1538 1539 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx); 1540 1541 return_VALUE(ACPI_INTERRUPT_HANDLED); 1542 } 1543 1544 UINT32 1545 acpi_eventhandler_sleep_button_for_sleep(void *context) 1546 { 1547 struct acpi_softc *sc = (struct acpi_softc *)context; 1548 1549 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1550 1551 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx); 1552 1553 return_VALUE(ACPI_INTERRUPT_HANDLED); 1554 } 1555 1556 UINT32 1557 acpi_eventhandler_sleep_button_for_wakeup(void *context) 1558 { 1559 struct acpi_softc *sc = (struct acpi_softc *)context; 1560 1561 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1562 1563 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx); 1564 1565 return_VALUE(ACPI_INTERRUPT_HANDLED); 1566 } 1567 1568 /* 1569 * XXX This is kinda ugly, and should not be here. 1570 */ 1571 struct acpi_staticbuf { 1572 ACPI_BUFFER buffer; 1573 char data[512]; 1574 }; 1575 1576 char * 1577 acpi_name(ACPI_HANDLE handle) 1578 { 1579 static struct acpi_staticbuf buf; 1580 1581 ACPI_ASSERTLOCK; 1582 1583 buf.buffer.Length = 512; 1584 buf.buffer.Pointer = &buf.data[0]; 1585 1586 if (ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer))) 1587 return(buf.buffer.Pointer); 1588 return("(unknown path)"); 1589 } 1590 1591 /* 1592 * Debugging/bug-avoidance. Avoid trying to fetch info on various 1593 * parts of the namespace. 1594 */ 1595 int 1596 acpi_avoid(ACPI_HANDLE handle) 1597 { 1598 char *cp, *env, *np; 1599 int len; 1600 1601 np = acpi_name(handle); 1602 if (*np == '\\') 1603 np++; 1604 if ((env = getenv("debug.acpi.avoid")) == NULL) 1605 return(0); 1606 1607 /* scan the avoid list checking for a match */ 1608 cp = env; 1609 for (;;) { 1610 while ((*cp != 0) && isspace(*cp)) 1611 cp++; 1612 if (*cp == 0) 1613 break; 1614 len = 0; 1615 while ((cp[len] != 0) && !isspace(cp[len])) 1616 len++; 1617 if (!strncmp(cp, np, len)) { 1618 freeenv(env); 1619 return(1); 1620 } 1621 cp += len; 1622 } 1623 freeenv(env); 1624 return(0); 1625 } 1626 1627 /* 1628 * Debugging/bug-avoidance. Disable ACPI subsystem components. 1629 */ 1630 int 1631 acpi_disabled(char *subsys) 1632 { 1633 char *cp, *env; 1634 int len; 1635 1636 if ((env = getenv("debug.acpi.disable")) == NULL) 1637 return(0); 1638 if (!strcmp(env, "all")) { 1639 freeenv(env); 1640 return(1); 1641 } 1642 1643 /* scan the disable list checking for a match */ 1644 cp = env; 1645 for (;;) { 1646 while ((*cp != 0) && isspace(*cp)) 1647 cp++; 1648 if (*cp == 0) 1649 break; 1650 len = 0; 1651 while ((cp[len] != 0) && !isspace(cp[len])) 1652 len++; 1653 if (!strncmp(cp, subsys, len)) { 1654 freeenv(env); 1655 return(1); 1656 } 1657 cp += len; 1658 } 1659 freeenv(env); 1660 return(0); 1661 } 1662 1663 /* 1664 * Device wake capability enable/disable. 1665 */ 1666 void 1667 acpi_device_enable_wake_capability(ACPI_HANDLE h, int enable) 1668 { 1669 ACPI_OBJECT_LIST ArgList; 1670 ACPI_OBJECT Arg; 1671 1672 /* 1673 * TBD: All Power Resources referenced by elements 2 through N 1674 * of the _PRW object are put into the ON state. 1675 */ 1676 1677 /* 1678 * enable/disable device wake function. 1679 */ 1680 1681 ArgList.Count = 1; 1682 ArgList.Pointer = &Arg; 1683 1684 Arg.Type = ACPI_TYPE_INTEGER; 1685 Arg.Integer.Value = enable; 1686 1687 (void)AcpiEvaluateObject(h, "_PSW", &ArgList, NULL); 1688 } 1689 1690 void 1691 acpi_device_enable_wake_event(ACPI_HANDLE h) 1692 { 1693 struct acpi_softc *sc; 1694 ACPI_STATUS status; 1695 ACPI_BUFFER prw_buffer; 1696 ACPI_OBJECT *res; 1697 1698 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1699 1700 if ((sc = devclass_get_softc(acpi_devclass, 0)) == NULL) { 1701 return; 1702 } 1703 1704 /* 1705 * _PRW object is only required for devices that have the ability 1706 * to wake the system from a system sleeping state. 1707 */ 1708 prw_buffer.Length = ACPI_ALLOCATE_BUFFER; 1709 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer); 1710 if (ACPI_FAILURE(status)) { 1711 return; 1712 } 1713 1714 res = (ACPI_OBJECT *)prw_buffer.Pointer; 1715 if (res == NULL) { 1716 return; 1717 } 1718 1719 if ((res->Type != ACPI_TYPE_PACKAGE) || (res->Package.Count < 2)) { 1720 goto out; 1721 } 1722 1723 /* 1724 * The element 1 of the _PRW object: 1725 * The lowest power system sleeping state that can be entered 1726 * while still providing wake functionality. 1727 * The sleeping state being entered must be greater or equal to 1728 * the power state declared in element 1 of the _PRW object. 1729 */ 1730 if (res->Package.Elements[1].Type != ACPI_TYPE_INTEGER) { 1731 goto out; 1732 } 1733 1734 if (sc->acpi_sstate > res->Package.Elements[1].Integer.Value) { 1735 goto out; 1736 } 1737 1738 /* 1739 * The element 0 of the _PRW object: 1740 */ 1741 switch(res->Package.Elements[0].Type) { 1742 case ACPI_TYPE_INTEGER: 1743 /* 1744 * If the data type of this package element is numeric, then this 1745 * _PRW package element is the bit index in the GPEx_EN, in the 1746 * GPE blocks described in the FADT, of the enable bit that is 1747 * enabled for the wake event. 1748 */ 1749 1750 status = AcpiEnableGpe(NULL, res->Package.Elements[0].Integer.Value, 1751 ACPI_EVENT_WAKE_ENABLE); 1752 if (ACPI_FAILURE(status)) 1753 printf("%s: EnableEvent Failed\n", __func__); 1754 break; 1755 1756 case ACPI_TYPE_PACKAGE: 1757 /* XXX TBD */ 1758 1759 /* 1760 * If the data type of this package element is a package, then this 1761 * _PRW package element is itself a package containing two 1762 * elements. The first is an object reference to the GPE Block 1763 * device that contains the GPE that will be triggered by the wake 1764 * event. The second element is numeric and it contains the bit 1765 * index in the GPEx_EN, in the GPE Block referenced by the 1766 * first element in the package, of the enable bit that is enabled for 1767 * the wake event. 1768 * For example, if this field is a package then it is of the form: 1769 * Package() {\_SB.PCI0.ISA.GPE, 2} 1770 */ 1771 1772 break; 1773 1774 default: 1775 break; 1776 } 1777 1778 out: 1779 if (prw_buffer.Pointer != NULL) 1780 AcpiOsFree(prw_buffer.Pointer); 1781 return; 1782 } 1783 1784 /* 1785 * Control interface. 1786 * 1787 * We multiplex ioctls for all participating ACPI devices here. Individual 1788 * drivers wanting to be accessible via /dev/acpi should use the register/deregister 1789 * interface to make their handlers visible. 1790 */ 1791 struct acpi_ioctl_hook 1792 { 1793 TAILQ_ENTRY(acpi_ioctl_hook) link; 1794 u_long cmd; 1795 int (* fn)(u_long cmd, caddr_t addr, void *arg); 1796 void *arg; 1797 }; 1798 1799 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks; 1800 static int acpi_ioctl_hooks_initted; 1801 1802 /* 1803 * Register an ioctl handler. 1804 */ 1805 int 1806 acpi_register_ioctl(u_long cmd, int (* fn)(u_long cmd, caddr_t addr, void *arg), void *arg) 1807 { 1808 struct acpi_ioctl_hook *hp; 1809 1810 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL) 1811 return(ENOMEM); 1812 hp->cmd = cmd; 1813 hp->fn = fn; 1814 hp->arg = arg; 1815 if (acpi_ioctl_hooks_initted == 0) { 1816 TAILQ_INIT(&acpi_ioctl_hooks); 1817 acpi_ioctl_hooks_initted = 1; 1818 } 1819 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link); 1820 return(0); 1821 } 1822 1823 /* 1824 * Deregister an ioctl handler. 1825 */ 1826 void 1827 acpi_deregister_ioctl(u_long cmd, int (* fn)(u_long cmd, caddr_t addr, void *arg)) 1828 { 1829 struct acpi_ioctl_hook *hp; 1830 1831 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) 1832 if ((hp->cmd == cmd) && (hp->fn == fn)) 1833 break; 1834 1835 if (hp != NULL) { 1836 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link); 1837 free(hp, M_ACPIDEV); 1838 } 1839 } 1840 1841 static int 1842 acpiopen(dev_t dev, int flag, int fmt, d_thread_t *td) 1843 { 1844 return(0); 1845 } 1846 1847 static int 1848 acpiclose(dev_t dev, int flag, int fmt, d_thread_t *td) 1849 { 1850 return(0); 1851 } 1852 1853 static int 1854 acpiioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td) 1855 { 1856 struct acpi_softc *sc; 1857 struct acpi_ioctl_hook *hp; 1858 int error, xerror, state; 1859 ACPI_LOCK_DECL; 1860 1861 ACPI_LOCK; 1862 1863 error = state = 0; 1864 sc = dev->si_drv1; 1865 1866 /* 1867 * Scan the list of registered ioctls, looking for handlers. 1868 */ 1869 if (acpi_ioctl_hooks_initted) { 1870 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) { 1871 if (hp->cmd == cmd) { 1872 xerror = hp->fn(cmd, addr, hp->arg); 1873 if (xerror != 0) 1874 error = xerror; 1875 goto out; 1876 } 1877 } 1878 } 1879 1880 /* 1881 * Core ioctls are not permitted for non-writable user. 1882 * Currently, other ioctls just fetch information. 1883 * Not changing system behavior. 1884 */ 1885 if(!(flag & FWRITE)){ 1886 return EPERM; 1887 } 1888 1889 /* 1890 * Core system ioctls. 1891 */ 1892 switch (cmd) { 1893 case ACPIIO_ENABLE: 1894 if (ACPI_FAILURE(acpi_Enable(sc))) 1895 error = ENXIO; 1896 break; 1897 1898 case ACPIIO_DISABLE: 1899 if (ACPI_FAILURE(acpi_Disable(sc))) 1900 error = ENXIO; 1901 break; 1902 1903 case ACPIIO_SETSLPSTATE: 1904 if (!sc->acpi_enabled) { 1905 error = ENXIO; 1906 break; 1907 } 1908 state = *(int *)addr; 1909 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) { 1910 acpi_SetSleepState(sc, state); 1911 } else { 1912 error = EINVAL; 1913 } 1914 break; 1915 1916 default: 1917 if (error == 0) 1918 error = EINVAL; 1919 break; 1920 } 1921 1922 out: 1923 ACPI_UNLOCK; 1924 return(error); 1925 } 1926 1927 static int 1928 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 1929 { 1930 char sleep_state[4]; 1931 char buf[16]; 1932 int error; 1933 UINT8 state, TypeA, TypeB; 1934 1935 buf[0] = '\0'; 1936 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX+1; state++) { 1937 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) { 1938 sprintf(sleep_state, "S%d ", state); 1939 strcat(buf, sleep_state); 1940 } 1941 } 1942 error = sysctl_handle_string(oidp, buf, sizeof(buf), req); 1943 return(error); 1944 } 1945 1946 static int 1947 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 1948 { 1949 char sleep_state[10]; 1950 int error; 1951 u_int new_state, old_state; 1952 1953 old_state = *(u_int *)oidp->oid_arg1; 1954 if (old_state > ACPI_S_STATES_MAX+1) { 1955 strcpy(sleep_state, "unknown"); 1956 } else { 1957 bzero(sleep_state, sizeof(sleep_state)); 1958 strncpy(sleep_state, sleep_state_names[old_state], 1959 sizeof(sleep_state_names[old_state])); 1960 } 1961 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req); 1962 if (error == 0 && req->newptr != NULL) { 1963 for (new_state = ACPI_STATE_S0; new_state <= ACPI_S_STATES_MAX+1; new_state++) { 1964 if (strncmp(sleep_state, sleep_state_names[new_state], 1965 sizeof(sleep_state)) == 0) 1966 break; 1967 } 1968 if (new_state <= ACPI_S_STATES_MAX+1) { 1969 if (new_state != old_state) { 1970 *(u_int *)oidp->oid_arg1 = new_state; 1971 } 1972 } else { 1973 error = EINVAL; 1974 } 1975 } 1976 return(error); 1977 } 1978 1979 #ifdef ACPI_DEBUG 1980 /* 1981 * Support for parsing debug options from the kernel environment. 1982 * 1983 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers 1984 * by specifying the names of the bits in the debug.acpi.layer and 1985 * debug.acpi.level environment variables. Bits may be unset by 1986 * prefixing the bit name with !. 1987 */ 1988 struct debugtag 1989 { 1990 char *name; 1991 UINT32 value; 1992 }; 1993 1994 static struct debugtag dbg_layer[] = { 1995 {"ACPI_UTILITIES", ACPI_UTILITIES}, 1996 {"ACPI_HARDWARE", ACPI_HARDWARE}, 1997 {"ACPI_EVENTS", ACPI_EVENTS}, 1998 {"ACPI_TABLES", ACPI_TABLES}, 1999 {"ACPI_NAMESPACE", ACPI_NAMESPACE}, 2000 {"ACPI_PARSER", ACPI_PARSER}, 2001 {"ACPI_DISPATCHER", ACPI_DISPATCHER}, 2002 {"ACPI_EXECUTER", ACPI_EXECUTER}, 2003 {"ACPI_RESOURCES", ACPI_RESOURCES}, 2004 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER}, 2005 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES}, 2006 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER}, 2007 2008 {"ACPI_BUS", ACPI_BUS}, 2009 {"ACPI_SYSTEM", ACPI_SYSTEM}, 2010 {"ACPI_POWER", ACPI_POWER}, 2011 {"ACPI_EC", ACPI_EC}, 2012 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER}, 2013 {"ACPI_BATTERY", ACPI_BATTERY}, 2014 {"ACPI_BUTTON", ACPI_BUTTON}, 2015 {"ACPI_PROCESSOR", ACPI_PROCESSOR}, 2016 {"ACPI_THERMAL", ACPI_THERMAL}, 2017 {"ACPI_FAN", ACPI_FAN}, 2018 2019 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS}, 2020 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS}, 2021 {NULL, 0} 2022 }; 2023 2024 static struct debugtag dbg_level[] = { 2025 {"ACPI_LV_ERROR", ACPI_LV_ERROR}, 2026 {"ACPI_LV_WARN", ACPI_LV_WARN}, 2027 {"ACPI_LV_INIT", ACPI_LV_INIT}, 2028 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT}, 2029 {"ACPI_LV_INFO", ACPI_LV_INFO}, 2030 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS}, 2031 2032 /* Trace verbosity level 1 [Standard Trace Level] */ 2033 {"ACPI_LV_PARSE", ACPI_LV_PARSE}, 2034 {"ACPI_LV_LOAD", ACPI_LV_LOAD}, 2035 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH}, 2036 {"ACPI_LV_EXEC", ACPI_LV_EXEC}, 2037 {"ACPI_LV_NAMES", ACPI_LV_NAMES}, 2038 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION}, 2039 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD}, 2040 {"ACPI_LV_TABLES", ACPI_LV_TABLES}, 2041 {"ACPI_LV_VALUES", ACPI_LV_VALUES}, 2042 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS}, 2043 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES}, 2044 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS}, 2045 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE}, 2046 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES}, 2047 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1}, 2048 2049 /* Trace verbosity level 2 [Function tracing and memory allocation] */ 2050 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS}, 2051 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS}, 2052 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS}, 2053 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2}, 2054 {"ACPI_LV_ALL", ACPI_LV_ALL}, 2055 2056 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */ 2057 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX}, 2058 {"ACPI_LV_THREADS", ACPI_LV_THREADS}, 2059 {"ACPI_LV_IO", ACPI_LV_IO}, 2060 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS}, 2061 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3}, 2062 2063 /* Exceptionally verbose output -- also used in the global "DebugLevel" */ 2064 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE}, 2065 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO}, 2066 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES}, 2067 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS}, 2068 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE}, 2069 {NULL, 0} 2070 }; 2071 2072 static void 2073 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag) 2074 { 2075 char *ep; 2076 int i, l; 2077 int set; 2078 2079 while (*cp) { 2080 if (isspace(*cp)) { 2081 cp++; 2082 continue; 2083 } 2084 ep = cp; 2085 while (*ep && !isspace(*ep)) 2086 ep++; 2087 if (*cp == '!') { 2088 set = 0; 2089 cp++; 2090 if (cp == ep) 2091 continue; 2092 } else { 2093 set = 1; 2094 } 2095 l = ep - cp; 2096 for (i = 0; tag[i].name != NULL; i++) { 2097 if (!strncmp(cp, tag[i].name, l)) { 2098 if (set) { 2099 *flag |= tag[i].value; 2100 } else { 2101 *flag &= ~tag[i].value; 2102 } 2103 printf("ACPI_DEBUG: set '%s'\n", tag[i].name); 2104 } 2105 } 2106 cp = ep; 2107 } 2108 } 2109 2110 static void 2111 acpi_set_debugging(void *junk) 2112 { 2113 char *cp; 2114 2115 if (!cold) 2116 return; 2117 2118 AcpiDbgLayer = 0; 2119 AcpiDbgLevel = 0; 2120 if ((cp = getenv("debug.acpi.layer")) != NULL) { 2121 acpi_parse_debug(cp, &dbg_layer[0], &AcpiDbgLayer); 2122 freeenv(cp); 2123 } 2124 if ((cp = getenv("debug.acpi.level")) != NULL) { 2125 acpi_parse_debug(cp, &dbg_level[0], &AcpiDbgLevel); 2126 freeenv(cp); 2127 } 2128 2129 printf("ACPI debug layer 0x%x debug level 0x%x\n", AcpiDbgLayer, AcpiDbgLevel); 2130 } 2131 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging, NULL); 2132 #endif 2133 2134 static int 2135 acpi_pm_func(u_long cmd, void *arg, ...) 2136 { 2137 int state, acpi_state; 2138 int error; 2139 struct acpi_softc *sc; 2140 va_list ap; 2141 2142 error = 0; 2143 switch (cmd) { 2144 case POWER_CMD_SUSPEND: 2145 sc = (struct acpi_softc *)arg; 2146 if (sc == NULL) { 2147 error = EINVAL; 2148 goto out; 2149 } 2150 2151 va_start(ap, arg); 2152 state = va_arg(ap, int); 2153 va_end(ap); 2154 2155 switch (state) { 2156 case POWER_SLEEP_STATE_STANDBY: 2157 acpi_state = sc->acpi_standby_sx; 2158 break; 2159 case POWER_SLEEP_STATE_SUSPEND: 2160 acpi_state = sc->acpi_suspend_sx; 2161 break; 2162 case POWER_SLEEP_STATE_HIBERNATE: 2163 acpi_state = ACPI_STATE_S4; 2164 break; 2165 default: 2166 error = EINVAL; 2167 goto out; 2168 } 2169 2170 acpi_SetSleepState(sc, acpi_state); 2171 break; 2172 2173 default: 2174 error = EINVAL; 2175 goto out; 2176 } 2177 2178 out: 2179 return (error); 2180 } 2181 2182 static void 2183 acpi_pm_register(void *arg) 2184 { 2185 2186 if (!cold) 2187 return; 2188 2189 if (resource_disabled("acpi", 0)) 2190 return; 2191 2192 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL); 2193 } 2194 2195 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0); 2196 2197