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 30 #include <sys/cdefs.h> 31 #include "opt_acpi.h" 32 33 #include <sys/param.h> 34 #include <sys/eventhandler.h> 35 #include <sys/kernel.h> 36 #include <sys/proc.h> 37 #include <sys/fcntl.h> 38 #include <sys/malloc.h> 39 #include <sys/module.h> 40 #include <sys/bus.h> 41 #include <sys/conf.h> 42 #include <sys/ioccom.h> 43 #include <sys/reboot.h> 44 #include <sys/sysctl.h> 45 #include <sys/ctype.h> 46 #include <sys/linker.h> 47 #include <sys/mount.h> 48 #include <sys/power.h> 49 #include <sys/sbuf.h> 50 #include <sys/sched.h> 51 #include <sys/smp.h> 52 #include <sys/timetc.h> 53 #include <sys/uuid.h> 54 55 #if defined(__i386__) || defined(__amd64__) 56 #include <machine/clock.h> 57 #include <machine/pci_cfgreg.h> 58 #include <x86/cputypes.h> 59 #include <x86/x86_var.h> 60 #endif 61 #include <machine/resource.h> 62 #include <machine/bus.h> 63 #include <sys/rman.h> 64 #include <isa/isavar.h> 65 #include <isa/pnpvar.h> 66 67 #include <contrib/dev/acpica/include/acpi.h> 68 #include <contrib/dev/acpica/include/accommon.h> 69 #include <contrib/dev/acpica/include/acnamesp.h> 70 71 #include <dev/acpica/acpivar.h> 72 #include <dev/acpica/acpiio.h> 73 74 #include <dev/pci/pcivar.h> 75 76 #include <vm/vm_param.h> 77 78 static MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices"); 79 80 /* Hooks for the ACPI CA debugging infrastructure */ 81 #define _COMPONENT ACPI_BUS 82 ACPI_MODULE_NAME("ACPI") 83 84 static d_open_t acpiopen; 85 static d_close_t acpiclose; 86 static d_ioctl_t acpiioctl; 87 88 static struct cdevsw acpi_cdevsw = { 89 .d_version = D_VERSION, 90 .d_open = acpiopen, 91 .d_close = acpiclose, 92 .d_ioctl = acpiioctl, 93 .d_name = "acpi", 94 }; 95 96 struct acpi_interface { 97 ACPI_STRING *data; 98 int num; 99 }; 100 101 static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL }; 102 103 /* Global mutex for locking access to the ACPI subsystem. */ 104 struct mtx acpi_mutex; 105 struct callout acpi_sleep_timer; 106 107 /* Bitmap of device quirks. */ 108 int acpi_quirks; 109 110 /* Supported sleep states. */ 111 static BOOLEAN acpi_sleep_states[ACPI_S_STATE_COUNT]; 112 113 static void acpi_lookup(void *arg, const char *name, device_t *dev); 114 static int acpi_modevent(struct module *mod, int event, void *junk); 115 116 static device_probe_t acpi_probe; 117 static device_attach_t acpi_attach; 118 static device_suspend_t acpi_suspend; 119 static device_resume_t acpi_resume; 120 static device_shutdown_t acpi_shutdown; 121 122 static bus_add_child_t acpi_add_child; 123 static bus_print_child_t acpi_print_child; 124 static bus_probe_nomatch_t acpi_probe_nomatch; 125 static bus_driver_added_t acpi_driver_added; 126 static bus_child_deleted_t acpi_child_deleted; 127 static bus_read_ivar_t acpi_read_ivar; 128 static bus_write_ivar_t acpi_write_ivar; 129 static bus_get_resource_list_t acpi_get_rlist; 130 static bus_get_rman_t acpi_get_rman; 131 static bus_set_resource_t acpi_set_resource; 132 static bus_alloc_resource_t acpi_alloc_resource; 133 static bus_adjust_resource_t acpi_adjust_resource; 134 static bus_release_resource_t acpi_release_resource; 135 static bus_delete_resource_t acpi_delete_resource; 136 static bus_activate_resource_t acpi_activate_resource; 137 static bus_deactivate_resource_t acpi_deactivate_resource; 138 static bus_map_resource_t acpi_map_resource; 139 static bus_unmap_resource_t acpi_unmap_resource; 140 static bus_child_pnpinfo_t acpi_child_pnpinfo_method; 141 static bus_child_location_t acpi_child_location_method; 142 static bus_hint_device_unit_t acpi_hint_device_unit; 143 static bus_get_property_t acpi_bus_get_prop; 144 static bus_get_device_path_t acpi_get_device_path; 145 static bus_get_domain_t acpi_get_domain_method; 146 147 static acpi_id_probe_t acpi_device_id_probe; 148 static acpi_evaluate_object_t acpi_device_eval_obj; 149 static acpi_get_property_t acpi_device_get_prop; 150 static acpi_scan_children_t acpi_device_scan_children; 151 152 static isa_pnp_probe_t acpi_isa_pnp_probe; 153 154 static void acpi_reserve_resources(device_t dev); 155 static int acpi_sysres_alloc(device_t dev); 156 static uint32_t acpi_isa_get_logicalid(device_t dev); 157 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count); 158 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, 159 void *context, void **retval); 160 static ACPI_STATUS acpi_find_dsd(struct acpi_device *ad); 161 static void acpi_platform_osc(device_t dev); 162 static void acpi_probe_children(device_t bus); 163 static void acpi_probe_order(ACPI_HANDLE handle, int *order); 164 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level, 165 void *context, void **status); 166 static void acpi_sleep_enable(void *arg); 167 static ACPI_STATUS acpi_sleep_disable(struct acpi_softc *sc); 168 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state); 169 static void acpi_shutdown_final(void *arg, int howto); 170 static void acpi_enable_fixed_events(struct acpi_softc *sc); 171 static void acpi_resync_clock(struct acpi_softc *sc); 172 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate); 173 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate); 174 static int acpi_wake_prep_walk(int sstate); 175 static int acpi_wake_sysctl_walk(device_t dev); 176 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS); 177 static void acpi_system_eventhandler_sleep(void *arg, int state); 178 static void acpi_system_eventhandler_wakeup(void *arg, int state); 179 static int acpi_sname2sstate(const char *sname); 180 static const char *acpi_sstate2sname(int sstate); 181 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); 182 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); 183 static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS); 184 static int acpi_pm_func(u_long cmd, void *arg, ...); 185 static void acpi_enable_pcie(void); 186 static void acpi_reset_interfaces(device_t dev); 187 188 static device_method_t acpi_methods[] = { 189 /* Device interface */ 190 DEVMETHOD(device_probe, acpi_probe), 191 DEVMETHOD(device_attach, acpi_attach), 192 DEVMETHOD(device_shutdown, acpi_shutdown), 193 DEVMETHOD(device_detach, bus_generic_detach), 194 DEVMETHOD(device_suspend, acpi_suspend), 195 DEVMETHOD(device_resume, acpi_resume), 196 197 /* Bus interface */ 198 DEVMETHOD(bus_add_child, acpi_add_child), 199 DEVMETHOD(bus_print_child, acpi_print_child), 200 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch), 201 DEVMETHOD(bus_driver_added, acpi_driver_added), 202 DEVMETHOD(bus_child_deleted, acpi_child_deleted), 203 DEVMETHOD(bus_read_ivar, acpi_read_ivar), 204 DEVMETHOD(bus_write_ivar, acpi_write_ivar), 205 DEVMETHOD(bus_get_resource_list, acpi_get_rlist), 206 DEVMETHOD(bus_get_rman, acpi_get_rman), 207 DEVMETHOD(bus_set_resource, acpi_set_resource), 208 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 209 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource), 210 DEVMETHOD(bus_adjust_resource, acpi_adjust_resource), 211 DEVMETHOD(bus_release_resource, acpi_release_resource), 212 DEVMETHOD(bus_delete_resource, acpi_delete_resource), 213 DEVMETHOD(bus_activate_resource, acpi_activate_resource), 214 DEVMETHOD(bus_deactivate_resource, acpi_deactivate_resource), 215 DEVMETHOD(bus_map_resource, acpi_map_resource), 216 DEVMETHOD(bus_unmap_resource, acpi_unmap_resource), 217 DEVMETHOD(bus_child_pnpinfo, acpi_child_pnpinfo_method), 218 DEVMETHOD(bus_child_location, acpi_child_location_method), 219 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 220 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 221 DEVMETHOD(bus_hint_device_unit, acpi_hint_device_unit), 222 DEVMETHOD(bus_get_cpus, acpi_get_cpus), 223 DEVMETHOD(bus_get_domain, acpi_get_domain_method), 224 DEVMETHOD(bus_get_property, acpi_bus_get_prop), 225 DEVMETHOD(bus_get_device_path, acpi_get_device_path), 226 227 /* ACPI bus */ 228 DEVMETHOD(acpi_id_probe, acpi_device_id_probe), 229 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj), 230 DEVMETHOD(acpi_get_property, acpi_device_get_prop), 231 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep), 232 DEVMETHOD(acpi_scan_children, acpi_device_scan_children), 233 234 /* ISA emulation */ 235 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe), 236 237 DEVMETHOD_END 238 }; 239 240 static driver_t acpi_driver = { 241 "acpi", 242 acpi_methods, 243 sizeof(struct acpi_softc), 244 }; 245 246 EARLY_DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_modevent, 0, 247 BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE); 248 MODULE_VERSION(acpi, 1); 249 250 ACPI_SERIAL_DECL(acpi, "ACPI root bus"); 251 252 /* Local pools for managing system resources for ACPI child devices. */ 253 static struct rman acpi_rman_io, acpi_rman_mem; 254 255 #define ACPI_MINIMUM_AWAKETIME 5 256 257 /* Holds the description of the acpi0 device. */ 258 static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2]; 259 260 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 261 "ACPI debugging"); 262 static char acpi_ca_version[12]; 263 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD, 264 acpi_ca_version, 0, "Version of Intel ACPI-CA"); 265 266 /* 267 * Allow overriding _OSI methods. 268 */ 269 static char acpi_install_interface[256]; 270 TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface, 271 sizeof(acpi_install_interface)); 272 static char acpi_remove_interface[256]; 273 TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface, 274 sizeof(acpi_remove_interface)); 275 276 /* Allow users to dump Debug objects without ACPI debugger. */ 277 static int acpi_debug_objects; 278 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects); 279 SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects, 280 CTLFLAG_RW | CTLTYPE_INT | CTLFLAG_MPSAFE, NULL, 0, 281 acpi_debug_objects_sysctl, "I", 282 "Enable Debug objects"); 283 284 /* Allow the interpreter to ignore common mistakes in BIOS. */ 285 static int acpi_interpreter_slack = 1; 286 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack); 287 SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RDTUN, 288 &acpi_interpreter_slack, 1, "Turn on interpreter slack mode."); 289 290 /* Ignore register widths set by FADT and use default widths instead. */ 291 static int acpi_ignore_reg_width = 1; 292 TUNABLE_INT("debug.acpi.default_register_width", &acpi_ignore_reg_width); 293 SYSCTL_INT(_debug_acpi, OID_AUTO, default_register_width, CTLFLAG_RDTUN, 294 &acpi_ignore_reg_width, 1, "Ignore register widths set by FADT"); 295 296 /* Allow users to override quirks. */ 297 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks); 298 299 int acpi_susp_bounce; 300 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW, 301 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices."); 302 303 #if defined(__amd64__) || defined(__i386__) 304 int acpi_override_isa_irq_polarity; 305 #endif 306 307 /* 308 * ACPI standard UUID for Device Specific Data Package 309 * "Device Properties UUID for _DSD" Rev. 2.0 310 */ 311 static const struct uuid acpi_dsd_uuid = { 312 0xdaffd814, 0x6eba, 0x4d8c, 0x8a, 0x91, 313 { 0xbc, 0x9b, 0xbf, 0x4a, 0xa3, 0x01 } 314 }; 315 316 /* 317 * ACPI can only be loaded as a module by the loader; activating it after 318 * system bootstrap time is not useful, and can be fatal to the system. 319 * It also cannot be unloaded, since the entire system bus hierarchy hangs 320 * off it. 321 */ 322 static int 323 acpi_modevent(struct module *mod, int event, void *junk) 324 { 325 switch (event) { 326 case MOD_LOAD: 327 if (!cold) { 328 printf("The ACPI driver cannot be loaded after boot.\n"); 329 return (EPERM); 330 } 331 break; 332 case MOD_UNLOAD: 333 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI) 334 return (EBUSY); 335 break; 336 default: 337 break; 338 } 339 return (0); 340 } 341 342 /* 343 * Perform early initialization. 344 */ 345 ACPI_STATUS 346 acpi_Startup(void) 347 { 348 static int started = 0; 349 ACPI_STATUS status; 350 int val; 351 352 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 353 354 /* Only run the startup code once. The MADT driver also calls this. */ 355 if (started) 356 return_VALUE (AE_OK); 357 started = 1; 358 359 /* 360 * Initialize the ACPICA subsystem. 361 */ 362 if (ACPI_FAILURE(status = AcpiInitializeSubsystem())) { 363 printf("ACPI: Could not initialize Subsystem: %s\n", 364 AcpiFormatException(status)); 365 return_VALUE (status); 366 } 367 368 /* 369 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing 370 * if more tables exist. 371 */ 372 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) { 373 printf("ACPI: Table initialisation failed: %s\n", 374 AcpiFormatException(status)); 375 return_VALUE (status); 376 } 377 378 /* Set up any quirks we have for this system. */ 379 if (acpi_quirks == ACPI_Q_OK) 380 acpi_table_quirks(&acpi_quirks); 381 382 /* If the user manually set the disabled hint to 0, force-enable ACPI. */ 383 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0) 384 acpi_quirks &= ~ACPI_Q_BROKEN; 385 if (acpi_quirks & ACPI_Q_BROKEN) { 386 printf("ACPI disabled by blacklist. Contact your BIOS vendor.\n"); 387 status = AE_SUPPORT; 388 } 389 390 return_VALUE (status); 391 } 392 393 /* 394 * Detect ACPI and perform early initialisation. 395 */ 396 int 397 acpi_identify(void) 398 { 399 ACPI_TABLE_RSDP *rsdp; 400 ACPI_TABLE_HEADER *rsdt; 401 ACPI_PHYSICAL_ADDRESS paddr; 402 struct sbuf sb; 403 404 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 405 406 if (!cold) 407 return (ENXIO); 408 409 /* Check that we haven't been disabled with a hint. */ 410 if (resource_disabled("acpi", 0)) 411 return (ENXIO); 412 413 /* Check for other PM systems. */ 414 if (power_pm_get_type() != POWER_PM_TYPE_NONE && 415 power_pm_get_type() != POWER_PM_TYPE_ACPI) { 416 printf("ACPI identify failed, other PM system enabled.\n"); 417 return (ENXIO); 418 } 419 420 /* Initialize root tables. */ 421 if (ACPI_FAILURE(acpi_Startup())) { 422 printf("ACPI: Try disabling either ACPI or apic support.\n"); 423 return (ENXIO); 424 } 425 426 if ((paddr = AcpiOsGetRootPointer()) == 0 || 427 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL) 428 return (ENXIO); 429 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0) 430 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress; 431 else 432 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress; 433 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 434 435 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL) 436 return (ENXIO); 437 sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN); 438 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE); 439 sbuf_trim(&sb); 440 sbuf_putc(&sb, ' '); 441 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE); 442 sbuf_trim(&sb); 443 sbuf_finish(&sb); 444 sbuf_delete(&sb); 445 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 446 447 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION); 448 449 return (0); 450 } 451 452 /* 453 * Fetch some descriptive data from ACPI to put in our attach message. 454 */ 455 static int 456 acpi_probe(device_t dev) 457 { 458 459 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 460 461 device_set_desc(dev, acpi_desc); 462 463 return_VALUE (BUS_PROBE_NOWILDCARD); 464 } 465 466 static int 467 acpi_attach(device_t dev) 468 { 469 struct acpi_softc *sc; 470 ACPI_STATUS status; 471 int error, state; 472 UINT32 flags; 473 UINT8 TypeA, TypeB; 474 char *env; 475 476 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 477 478 sc = device_get_softc(dev); 479 sc->acpi_dev = dev; 480 callout_init(&sc->susp_force_to, 1); 481 482 error = ENXIO; 483 484 /* Initialize resource manager. */ 485 acpi_rman_io.rm_type = RMAN_ARRAY; 486 acpi_rman_io.rm_start = 0; 487 acpi_rman_io.rm_end = 0xffff; 488 acpi_rman_io.rm_descr = "ACPI I/O ports"; 489 if (rman_init(&acpi_rman_io) != 0) 490 panic("acpi rman_init IO ports failed"); 491 acpi_rman_mem.rm_type = RMAN_ARRAY; 492 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses"; 493 if (rman_init(&acpi_rman_mem) != 0) 494 panic("acpi rman_init memory failed"); 495 496 resource_list_init(&sc->sysres_rl); 497 498 /* Initialise the ACPI mutex */ 499 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF); 500 501 /* 502 * Set the globals from our tunables. This is needed because ACPI-CA 503 * uses UINT8 for some values and we have no tunable_byte. 504 */ 505 AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE; 506 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE; 507 AcpiGbl_UseDefaultRegisterWidths = acpi_ignore_reg_width ? TRUE : FALSE; 508 509 #ifndef ACPI_DEBUG 510 /* 511 * Disable all debugging layers and levels. 512 */ 513 AcpiDbgLayer = 0; 514 AcpiDbgLevel = 0; 515 #endif 516 517 /* Override OS interfaces if the user requested. */ 518 acpi_reset_interfaces(dev); 519 520 /* Load ACPI name space. */ 521 status = AcpiLoadTables(); 522 if (ACPI_FAILURE(status)) { 523 device_printf(dev, "Could not load Namespace: %s\n", 524 AcpiFormatException(status)); 525 goto out; 526 } 527 528 /* Handle MCFG table if present. */ 529 acpi_enable_pcie(); 530 531 /* 532 * Note that some systems (specifically, those with namespace evaluation 533 * issues that require the avoidance of parts of the namespace) must 534 * avoid running _INI and _STA on everything, as well as dodging the final 535 * object init pass. 536 * 537 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT). 538 * 539 * XXX We should arrange for the object init pass after we have attached 540 * all our child devices, but on many systems it works here. 541 */ 542 flags = 0; 543 if (testenv("debug.acpi.avoid")) 544 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; 545 546 /* Bring the hardware and basic handlers online. */ 547 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) { 548 device_printf(dev, "Could not enable ACPI: %s\n", 549 AcpiFormatException(status)); 550 goto out; 551 } 552 553 /* 554 * Call the ECDT probe function to provide EC functionality before 555 * the namespace has been evaluated. 556 * 557 * XXX This happens before the sysresource devices have been probed and 558 * attached so its resources come from nexus0. In practice, this isn't 559 * a problem but should be addressed eventually. 560 */ 561 acpi_ec_ecdt_probe(dev); 562 563 /* Bring device objects and regions online. */ 564 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) { 565 device_printf(dev, "Could not initialize ACPI objects: %s\n", 566 AcpiFormatException(status)); 567 goto out; 568 } 569 570 /* 571 * Setup our sysctl tree. 572 * 573 * XXX: This doesn't check to make sure that none of these fail. 574 */ 575 sysctl_ctx_init(&sc->acpi_sysctl_ctx); 576 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx, 577 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, device_get_name(dev), 578 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); 579 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 580 OID_AUTO, "supported_sleep_state", 581 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, 582 0, 0, acpi_supported_sleep_state_sysctl, "A", 583 "List supported ACPI sleep states."); 584 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 585 OID_AUTO, "power_button_state", 586 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, 587 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", 588 "Power button ACPI sleep state."); 589 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 590 OID_AUTO, "sleep_button_state", 591 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, 592 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", 593 "Sleep button ACPI sleep state."); 594 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 595 OID_AUTO, "lid_switch_state", 596 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, 597 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", 598 "Lid ACPI sleep state. Set to S3 if you want to suspend your laptop when close the Lid."); 599 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 600 OID_AUTO, "standby_state", 601 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, 602 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", ""); 603 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 604 OID_AUTO, "suspend_state", 605 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, 606 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", ""); 607 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 608 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0, 609 "sleep delay in seconds"); 610 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 611 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode"); 612 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 613 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode"); 614 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 615 OID_AUTO, "disable_on_reboot", CTLFLAG_RW, 616 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system"); 617 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 618 OID_AUTO, "handle_reboot", CTLFLAG_RW, 619 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot"); 620 621 #if defined(__amd64__) || defined(__i386__) 622 /* 623 * Enable workaround for incorrect ISA IRQ polarity by default on 624 * systems with Intel CPUs. 625 */ 626 if (cpu_vendor_id == CPU_VENDOR_INTEL) 627 acpi_override_isa_irq_polarity = 1; 628 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 629 OID_AUTO, "override_isa_irq_polarity", CTLFLAG_RDTUN, 630 &acpi_override_isa_irq_polarity, 0, 631 "Force active-hi polarity for edge-triggered ISA IRQs"); 632 #endif 633 634 /* 635 * Default to 1 second before sleeping to give some machines time to 636 * stabilize. 637 */ 638 sc->acpi_sleep_delay = 1; 639 if (bootverbose) 640 sc->acpi_verbose = 1; 641 if ((env = kern_getenv("hw.acpi.verbose")) != NULL) { 642 if (strcmp(env, "0") != 0) 643 sc->acpi_verbose = 1; 644 freeenv(env); 645 } 646 647 /* Only enable reboot by default if the FADT says it is available. */ 648 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) 649 sc->acpi_handle_reboot = 1; 650 651 #if !ACPI_REDUCED_HARDWARE 652 /* Only enable S4BIOS by default if the FACS says it is available. */ 653 if (AcpiGbl_FACS != NULL && AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT) 654 sc->acpi_s4bios = 1; 655 #endif 656 657 /* Probe all supported sleep states. */ 658 acpi_sleep_states[ACPI_STATE_S0] = TRUE; 659 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++) 660 if (ACPI_SUCCESS(AcpiEvaluateObject(ACPI_ROOT_OBJECT, 661 __DECONST(char *, AcpiGbl_SleepStateNames[state]), NULL, NULL)) && 662 ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) 663 acpi_sleep_states[state] = TRUE; 664 665 /* 666 * Dispatch the default sleep state to devices. The lid switch is set 667 * to UNKNOWN by default to avoid surprising users. 668 */ 669 sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ? 670 ACPI_STATE_S5 : ACPI_STATE_UNKNOWN; 671 sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN; 672 sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ? 673 ACPI_STATE_S1 : ACPI_STATE_UNKNOWN; 674 sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ? 675 ACPI_STATE_S3 : ACPI_STATE_UNKNOWN; 676 677 /* Pick the first valid sleep state for the sleep button default. */ 678 sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN; 679 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++) 680 if (acpi_sleep_states[state]) { 681 sc->acpi_sleep_button_sx = state; 682 break; 683 } 684 685 acpi_enable_fixed_events(sc); 686 687 /* 688 * Scan the namespace and attach/initialise children. 689 */ 690 691 /* Register our shutdown handler. */ 692 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc, 693 SHUTDOWN_PRI_LAST + 150); 694 695 /* 696 * Register our acpi event handlers. 697 * XXX should be configurable eg. via userland policy manager. 698 */ 699 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep, 700 sc, ACPI_EVENT_PRI_LAST); 701 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup, 702 sc, ACPI_EVENT_PRI_LAST); 703 704 /* Flag our initial states. */ 705 sc->acpi_enabled = TRUE; 706 sc->acpi_sstate = ACPI_STATE_S0; 707 sc->acpi_sleep_disabled = TRUE; 708 709 /* Create the control device */ 710 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0664, 711 "acpi"); 712 sc->acpi_dev_t->si_drv1 = sc; 713 714 if ((error = acpi_machdep_init(dev))) 715 goto out; 716 717 /* Register ACPI again to pass the correct argument of pm_func. */ 718 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc); 719 720 acpi_platform_osc(dev); 721 722 if (!acpi_disabled("bus")) { 723 EVENTHANDLER_REGISTER(dev_lookup, acpi_lookup, NULL, 1000); 724 acpi_probe_children(dev); 725 } 726 727 /* Update all GPEs and enable runtime GPEs. */ 728 status = AcpiUpdateAllGpes(); 729 if (ACPI_FAILURE(status)) 730 device_printf(dev, "Could not update all GPEs: %s\n", 731 AcpiFormatException(status)); 732 733 /* Allow sleep request after a while. */ 734 callout_init_mtx(&acpi_sleep_timer, &acpi_mutex, 0); 735 callout_reset(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME, 736 acpi_sleep_enable, sc); 737 738 error = 0; 739 740 out: 741 return_VALUE (error); 742 } 743 744 static void 745 acpi_set_power_children(device_t dev, int state) 746 { 747 device_t child; 748 device_t *devlist; 749 int dstate, i, numdevs; 750 751 if (device_get_children(dev, &devlist, &numdevs) != 0) 752 return; 753 754 /* 755 * Retrieve and set D-state for the sleep state if _SxD is present. 756 * Skip children who aren't attached since they are handled separately. 757 */ 758 for (i = 0; i < numdevs; i++) { 759 child = devlist[i]; 760 dstate = state; 761 if (device_is_attached(child) && 762 acpi_device_pwr_for_sleep(dev, child, &dstate) == 0) 763 acpi_set_powerstate(child, dstate); 764 } 765 free(devlist, M_TEMP); 766 } 767 768 static int 769 acpi_suspend(device_t dev) 770 { 771 int error; 772 773 bus_topo_assert(); 774 775 error = bus_generic_suspend(dev); 776 if (error == 0) 777 acpi_set_power_children(dev, ACPI_STATE_D3); 778 779 return (error); 780 } 781 782 static int 783 acpi_resume(device_t dev) 784 { 785 786 bus_topo_assert(); 787 788 acpi_set_power_children(dev, ACPI_STATE_D0); 789 790 return (bus_generic_resume(dev)); 791 } 792 793 static int 794 acpi_shutdown(device_t dev) 795 { 796 797 bus_topo_assert(); 798 799 /* Allow children to shutdown first. */ 800 bus_generic_shutdown(dev); 801 802 /* 803 * Enable any GPEs that are able to power-on the system (i.e., RTC). 804 * Also, disable any that are not valid for this state (most). 805 */ 806 acpi_wake_prep_walk(ACPI_STATE_S5); 807 808 return (0); 809 } 810 811 /* 812 * Handle a new device being added 813 */ 814 static device_t 815 acpi_add_child(device_t bus, u_int order, const char *name, int unit) 816 { 817 struct acpi_device *ad; 818 device_t child; 819 820 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL) 821 return (NULL); 822 823 ad->ad_domain = ACPI_DEV_DOMAIN_UNKNOWN; 824 resource_list_init(&ad->ad_rl); 825 826 child = device_add_child_ordered(bus, order, name, unit); 827 if (child != NULL) 828 device_set_ivars(child, ad); 829 else 830 free(ad, M_ACPIDEV); 831 return (child); 832 } 833 834 static int 835 acpi_print_child(device_t bus, device_t child) 836 { 837 struct acpi_device *adev = device_get_ivars(child); 838 struct resource_list *rl = &adev->ad_rl; 839 int retval = 0; 840 841 retval += bus_print_child_header(bus, child); 842 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#jx"); 843 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#jx"); 844 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd"); 845 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%jd"); 846 if (device_get_flags(child)) 847 retval += printf(" flags %#x", device_get_flags(child)); 848 retval += bus_print_child_domain(bus, child); 849 retval += bus_print_child_footer(bus, child); 850 851 return (retval); 852 } 853 854 /* 855 * If this device is an ACPI child but no one claimed it, attempt 856 * to power it off. We'll power it back up when a driver is added. 857 * 858 * XXX Disabled for now since many necessary devices (like fdc and 859 * ATA) don't claim the devices we created for them but still expect 860 * them to be powered up. 861 */ 862 static void 863 acpi_probe_nomatch(device_t bus, device_t child) 864 { 865 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER 866 acpi_set_powerstate(child, ACPI_STATE_D3); 867 #endif 868 } 869 870 /* 871 * If a new driver has a chance to probe a child, first power it up. 872 * 873 * XXX Disabled for now (see acpi_probe_nomatch for details). 874 */ 875 static void 876 acpi_driver_added(device_t dev, driver_t *driver) 877 { 878 device_t child, *devlist; 879 int i, numdevs; 880 881 DEVICE_IDENTIFY(driver, dev); 882 if (device_get_children(dev, &devlist, &numdevs)) 883 return; 884 for (i = 0; i < numdevs; i++) { 885 child = devlist[i]; 886 if (device_get_state(child) == DS_NOTPRESENT) { 887 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER 888 acpi_set_powerstate(child, ACPI_STATE_D0); 889 if (device_probe_and_attach(child) != 0) 890 acpi_set_powerstate(child, ACPI_STATE_D3); 891 #else 892 device_probe_and_attach(child); 893 #endif 894 } 895 } 896 free(devlist, M_TEMP); 897 } 898 899 /* Location hint for devctl(8) */ 900 static int 901 acpi_child_location_method(device_t cbdev, device_t child, struct sbuf *sb) 902 { 903 struct acpi_device *dinfo = device_get_ivars(child); 904 int pxm; 905 906 if (dinfo->ad_handle) { 907 sbuf_printf(sb, "handle=%s", acpi_name(dinfo->ad_handle)); 908 if (ACPI_SUCCESS(acpi_GetInteger(dinfo->ad_handle, "_PXM", &pxm))) { 909 sbuf_printf(sb, " _PXM=%d", pxm); 910 } 911 } 912 return (0); 913 } 914 915 /* PnP information for devctl(8) */ 916 int 917 acpi_pnpinfo(ACPI_HANDLE handle, struct sbuf *sb) 918 { 919 ACPI_DEVICE_INFO *adinfo; 920 921 if (ACPI_FAILURE(AcpiGetObjectInfo(handle, &adinfo))) { 922 sbuf_printf(sb, "unknown"); 923 return (0); 924 } 925 926 sbuf_printf(sb, "_HID=%s _UID=%lu _CID=%s", 927 (adinfo->Valid & ACPI_VALID_HID) ? 928 adinfo->HardwareId.String : "none", 929 (adinfo->Valid & ACPI_VALID_UID) ? 930 strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL, 931 ((adinfo->Valid & ACPI_VALID_CID) && 932 adinfo->CompatibleIdList.Count > 0) ? 933 adinfo->CompatibleIdList.Ids[0].String : "none"); 934 AcpiOsFree(adinfo); 935 936 return (0); 937 } 938 939 static int 940 acpi_child_pnpinfo_method(device_t cbdev, device_t child, struct sbuf *sb) 941 { 942 struct acpi_device *dinfo = device_get_ivars(child); 943 944 return (acpi_pnpinfo(dinfo->ad_handle, sb)); 945 } 946 947 /* 948 * Note: the check for ACPI locator may be redundant. However, this routine is 949 * suitable for both busses whose only locator is ACPI and as a building block 950 * for busses that have multiple locators to cope with. 951 */ 952 int 953 acpi_get_acpi_device_path(device_t bus, device_t child, const char *locator, struct sbuf *sb) 954 { 955 if (strcmp(locator, BUS_LOCATOR_ACPI) == 0) { 956 ACPI_HANDLE *handle = acpi_get_handle(child); 957 958 if (handle != NULL) 959 sbuf_printf(sb, "%s", acpi_name(handle)); 960 return (0); 961 } 962 963 return (bus_generic_get_device_path(bus, child, locator, sb)); 964 } 965 966 static int 967 acpi_get_device_path(device_t bus, device_t child, const char *locator, struct sbuf *sb) 968 { 969 struct acpi_device *dinfo = device_get_ivars(child); 970 971 if (strcmp(locator, BUS_LOCATOR_ACPI) == 0) 972 return (acpi_get_acpi_device_path(bus, child, locator, sb)); 973 974 if (strcmp(locator, BUS_LOCATOR_UEFI) == 0) { 975 ACPI_DEVICE_INFO *adinfo; 976 if (!ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo)) && 977 dinfo->ad_handle != 0 && (adinfo->Valid & ACPI_VALID_HID)) { 978 const char *hid = adinfo->HardwareId.String; 979 u_long uid = (adinfo->Valid & ACPI_VALID_UID) ? 980 strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL; 981 u_long hidval; 982 983 /* 984 * In UEFI Stanard Version 2.6, Section 9.6.1.6 Text 985 * Device Node Reference, there's an insanely long table 986 * 98. This implements the relevant bits from that 987 * table. Newer versions appear to have not required 988 * anything new. The EDK2 firmware presents both PciRoot 989 * and PcieRoot as PciRoot. Follow the EDK2 standard. 990 */ 991 if (strncmp("PNP", hid, 3) != 0) 992 goto nomatch; 993 hidval = strtoul(hid + 3, NULL, 16); 994 switch (hidval) { 995 case 0x0301: 996 sbuf_printf(sb, "Keyboard(0x%lx)", uid); 997 break; 998 case 0x0401: 999 sbuf_printf(sb, "ParallelPort(0x%lx)", uid); 1000 break; 1001 case 0x0501: 1002 sbuf_printf(sb, "Serial(0x%lx)", uid); 1003 break; 1004 case 0x0604: 1005 sbuf_printf(sb, "Floppy(0x%lx)", uid); 1006 break; 1007 case 0x0a03: 1008 case 0x0a08: 1009 sbuf_printf(sb, "PciRoot(0x%lx)", uid); 1010 break; 1011 default: /* Everything else gets a generic encode */ 1012 nomatch: 1013 sbuf_printf(sb, "Acpi(%s,0x%lx)", hid, uid); 1014 break; 1015 } 1016 } 1017 /* Not handled: AcpiAdr... unsure how to know it's one */ 1018 } 1019 1020 /* For the rest, punt to the default handler */ 1021 return (bus_generic_get_device_path(bus, child, locator, sb)); 1022 } 1023 1024 /* 1025 * Handle device deletion. 1026 */ 1027 static void 1028 acpi_child_deleted(device_t dev, device_t child) 1029 { 1030 struct acpi_device *dinfo = device_get_ivars(child); 1031 1032 if (acpi_get_device(dinfo->ad_handle) == child) 1033 AcpiDetachData(dinfo->ad_handle, acpi_fake_objhandler); 1034 } 1035 1036 /* 1037 * Handle per-device ivars 1038 */ 1039 static int 1040 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) 1041 { 1042 struct acpi_device *ad; 1043 1044 if ((ad = device_get_ivars(child)) == NULL) { 1045 device_printf(child, "device has no ivars\n"); 1046 return (ENOENT); 1047 } 1048 1049 /* ACPI and ISA compatibility ivars */ 1050 switch(index) { 1051 case ACPI_IVAR_HANDLE: 1052 *(ACPI_HANDLE *)result = ad->ad_handle; 1053 break; 1054 case ACPI_IVAR_PRIVATE: 1055 *(void **)result = ad->ad_private; 1056 break; 1057 case ACPI_IVAR_FLAGS: 1058 *(int *)result = ad->ad_flags; 1059 break; 1060 case ACPI_IVAR_DOMAIN: 1061 *(int *)result = ad->ad_domain; 1062 break; 1063 case ISA_IVAR_VENDORID: 1064 case ISA_IVAR_SERIAL: 1065 case ISA_IVAR_COMPATID: 1066 *(int *)result = -1; 1067 break; 1068 case ISA_IVAR_LOGICALID: 1069 *(int *)result = acpi_isa_get_logicalid(child); 1070 break; 1071 case PCI_IVAR_CLASS: 1072 *(uint8_t*)result = (ad->ad_cls_class >> 16) & 0xff; 1073 break; 1074 case PCI_IVAR_SUBCLASS: 1075 *(uint8_t*)result = (ad->ad_cls_class >> 8) & 0xff; 1076 break; 1077 case PCI_IVAR_PROGIF: 1078 *(uint8_t*)result = (ad->ad_cls_class >> 0) & 0xff; 1079 break; 1080 default: 1081 return (ENOENT); 1082 } 1083 1084 return (0); 1085 } 1086 1087 static int 1088 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value) 1089 { 1090 struct acpi_device *ad; 1091 1092 if ((ad = device_get_ivars(child)) == NULL) { 1093 device_printf(child, "device has no ivars\n"); 1094 return (ENOENT); 1095 } 1096 1097 switch(index) { 1098 case ACPI_IVAR_HANDLE: 1099 ad->ad_handle = (ACPI_HANDLE)value; 1100 break; 1101 case ACPI_IVAR_PRIVATE: 1102 ad->ad_private = (void *)value; 1103 break; 1104 case ACPI_IVAR_FLAGS: 1105 ad->ad_flags = (int)value; 1106 break; 1107 case ACPI_IVAR_DOMAIN: 1108 ad->ad_domain = (int)value; 1109 break; 1110 default: 1111 panic("bad ivar write request (%d)", index); 1112 return (ENOENT); 1113 } 1114 1115 return (0); 1116 } 1117 1118 /* 1119 * Handle child resource allocation/removal 1120 */ 1121 static struct resource_list * 1122 acpi_get_rlist(device_t dev, device_t child) 1123 { 1124 struct acpi_device *ad; 1125 1126 ad = device_get_ivars(child); 1127 return (&ad->ad_rl); 1128 } 1129 1130 static int 1131 acpi_match_resource_hint(device_t dev, int type, long value) 1132 { 1133 struct acpi_device *ad = device_get_ivars(dev); 1134 struct resource_list *rl = &ad->ad_rl; 1135 struct resource_list_entry *rle; 1136 1137 STAILQ_FOREACH(rle, rl, link) { 1138 if (rle->type != type) 1139 continue; 1140 if (rle->start <= value && rle->end >= value) 1141 return (1); 1142 } 1143 return (0); 1144 } 1145 1146 /* 1147 * Does this device match because the resources match? 1148 */ 1149 static bool 1150 acpi_hint_device_matches_resources(device_t child, const char *name, 1151 int unit) 1152 { 1153 long value; 1154 bool matches; 1155 1156 /* 1157 * Check for matching resources. We must have at least one match. 1158 * Since I/O and memory resources cannot be shared, if we get a 1159 * match on either of those, ignore any mismatches in IRQs or DRQs. 1160 * 1161 * XXX: We may want to revisit this to be more lenient and wire 1162 * as long as it gets one match. 1163 */ 1164 matches = false; 1165 if (resource_long_value(name, unit, "port", &value) == 0) { 1166 /* 1167 * Floppy drive controllers are notorious for having a 1168 * wide variety of resources not all of which include the 1169 * first port that is specified by the hint (typically 1170 * 0x3f0) (see the comment above fdc_isa_alloc_resources() 1171 * in fdc_isa.c). However, they do all seem to include 1172 * port + 2 (e.g. 0x3f2) so for a floppy device, look for 1173 * 'value + 2' in the port resources instead of the hint 1174 * value. 1175 */ 1176 if (strcmp(name, "fdc") == 0) 1177 value += 2; 1178 if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value)) 1179 matches = true; 1180 else 1181 return false; 1182 } 1183 if (resource_long_value(name, unit, "maddr", &value) == 0) { 1184 if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value)) 1185 matches = true; 1186 else 1187 return false; 1188 } 1189 1190 /* 1191 * If either the I/O address and/or the memory address matched, then 1192 * assumed this devices matches and that any mismatch in other resources 1193 * will be resolved by siltently ignoring those other resources. Otherwise 1194 * all further resources must match. 1195 */ 1196 if (matches) { 1197 return (true); 1198 } 1199 if (resource_long_value(name, unit, "irq", &value) == 0) { 1200 if (acpi_match_resource_hint(child, SYS_RES_IRQ, value)) 1201 matches = true; 1202 else 1203 return false; 1204 } 1205 if (resource_long_value(name, unit, "drq", &value) == 0) { 1206 if (acpi_match_resource_hint(child, SYS_RES_DRQ, value)) 1207 matches = true; 1208 else 1209 return false; 1210 } 1211 return matches; 1212 } 1213 1214 1215 /* 1216 * Wire device unit numbers based on resource matches in hints. 1217 */ 1218 static void 1219 acpi_hint_device_unit(device_t acdev, device_t child, const char *name, 1220 int *unitp) 1221 { 1222 device_location_cache_t *cache; 1223 const char *s; 1224 int line, unit; 1225 bool matches; 1226 1227 /* 1228 * Iterate over all the hints for the devices with the specified 1229 * name to see if one's resources are a subset of this device. 1230 */ 1231 line = 0; 1232 cache = dev_wired_cache_init(); 1233 while (resource_find_dev(&line, name, &unit, "at", NULL) == 0) { 1234 /* Must have an "at" for acpi or isa. */ 1235 resource_string_value(name, unit, "at", &s); 1236 matches = false; 1237 if (strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 || 1238 strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0) 1239 matches = acpi_hint_device_matches_resources(child, name, unit); 1240 else 1241 matches = dev_wired_cache_match(cache, child, s); 1242 1243 if (matches) { 1244 /* We have a winner! */ 1245 *unitp = unit; 1246 break; 1247 } 1248 } 1249 dev_wired_cache_fini(cache); 1250 } 1251 1252 /* 1253 * Fetch the NUMA domain for a device by mapping the value returned by 1254 * _PXM to a NUMA domain. If the device does not have a _PXM method, 1255 * -2 is returned. If any other error occurs, -1 is returned. 1256 */ 1257 int 1258 acpi_pxm_parse(device_t dev) 1259 { 1260 #ifdef NUMA 1261 #if defined(__i386__) || defined(__amd64__) || defined(__aarch64__) 1262 ACPI_HANDLE handle; 1263 ACPI_STATUS status; 1264 int pxm; 1265 1266 handle = acpi_get_handle(dev); 1267 if (handle == NULL) 1268 return (-2); 1269 status = acpi_GetInteger(handle, "_PXM", &pxm); 1270 if (ACPI_SUCCESS(status)) 1271 return (acpi_map_pxm_to_vm_domainid(pxm)); 1272 if (status == AE_NOT_FOUND) 1273 return (-2); 1274 #endif 1275 #endif 1276 return (-1); 1277 } 1278 1279 int 1280 acpi_get_cpus(device_t dev, device_t child, enum cpu_sets op, size_t setsize, 1281 cpuset_t *cpuset) 1282 { 1283 int d, error; 1284 1285 d = acpi_pxm_parse(child); 1286 if (d < 0) 1287 return (bus_generic_get_cpus(dev, child, op, setsize, cpuset)); 1288 1289 switch (op) { 1290 case LOCAL_CPUS: 1291 if (setsize != sizeof(cpuset_t)) 1292 return (EINVAL); 1293 *cpuset = cpuset_domain[d]; 1294 return (0); 1295 case INTR_CPUS: 1296 error = bus_generic_get_cpus(dev, child, op, setsize, cpuset); 1297 if (error != 0) 1298 return (error); 1299 if (setsize != sizeof(cpuset_t)) 1300 return (EINVAL); 1301 CPU_AND(cpuset, cpuset, &cpuset_domain[d]); 1302 return (0); 1303 default: 1304 return (bus_generic_get_cpus(dev, child, op, setsize, cpuset)); 1305 } 1306 } 1307 1308 static int 1309 acpi_get_domain_method(device_t dev, device_t child, int *domain) 1310 { 1311 int error; 1312 1313 error = acpi_read_ivar(dev, child, ACPI_IVAR_DOMAIN, 1314 (uintptr_t *)domain); 1315 if (error == 0 && *domain != ACPI_DEV_DOMAIN_UNKNOWN) 1316 return (0); 1317 return (ENOENT); 1318 } 1319 1320 static struct rman * 1321 acpi_get_rman(device_t bus, int type, u_int flags) 1322 { 1323 /* Only memory and IO resources are managed. */ 1324 switch (type) { 1325 case SYS_RES_IOPORT: 1326 return (&acpi_rman_io); 1327 case SYS_RES_MEMORY: 1328 return (&acpi_rman_mem); 1329 default: 1330 return (NULL); 1331 } 1332 } 1333 1334 /* 1335 * Pre-allocate/manage all memory and IO resources. Since rman can't handle 1336 * duplicates, we merge any in the sysresource attach routine. 1337 */ 1338 static int 1339 acpi_sysres_alloc(device_t dev) 1340 { 1341 struct acpi_softc *sc = device_get_softc(dev); 1342 struct resource *res; 1343 struct resource_list_entry *rle; 1344 struct rman *rm; 1345 device_t *children; 1346 int child_count, i; 1347 1348 /* 1349 * Probe/attach any sysresource devices. This would be unnecessary if we 1350 * had multi-pass probe/attach. 1351 */ 1352 if (device_get_children(dev, &children, &child_count) != 0) 1353 return (ENXIO); 1354 for (i = 0; i < child_count; i++) { 1355 if (ACPI_ID_PROBE(dev, children[i], sysres_ids, NULL) <= 0) 1356 device_probe_and_attach(children[i]); 1357 } 1358 free(children, M_TEMP); 1359 1360 STAILQ_FOREACH(rle, &sc->sysres_rl, link) { 1361 if (rle->res != NULL) { 1362 device_printf(dev, "duplicate resource for %jx\n", rle->start); 1363 continue; 1364 } 1365 1366 /* Only memory and IO resources are valid here. */ 1367 rm = acpi_get_rman(dev, rle->type, 0); 1368 if (rm == NULL) 1369 continue; 1370 1371 /* Pre-allocate resource and add to our rman pool. */ 1372 res = bus_alloc_resource(dev, rle->type, 1373 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 1374 RF_ACTIVE | RF_UNMAPPED); 1375 if (res != NULL) { 1376 rman_manage_region(rm, rman_get_start(res), rman_get_end(res)); 1377 rle->res = res; 1378 } else if (bootverbose) 1379 device_printf(dev, "reservation of %jx, %jx (%d) failed\n", 1380 rle->start, rle->count, rle->type); 1381 } 1382 return (0); 1383 } 1384 1385 /* 1386 * Reserve declared resources for active devices found during the 1387 * namespace scan once the boot-time attach of devices has completed. 1388 * 1389 * Ideally reserving firmware-assigned resources would work in a 1390 * depth-first traversal of the device namespace, but this is 1391 * complicated. In particular, not all resources are enumerated by 1392 * ACPI (e.g. PCI bridges and devices enumerate their resources via 1393 * other means). Some systems also enumerate devices via ACPI behind 1394 * PCI bridges but without a matching a PCI device_t enumerated via 1395 * PCI bus scanning, the device_t's end up as direct children of 1396 * acpi0. Doing this scan late is not ideal, but works for now. 1397 */ 1398 static void 1399 acpi_reserve_resources(device_t dev) 1400 { 1401 struct resource_list_entry *rle; 1402 struct resource_list *rl; 1403 struct acpi_device *ad; 1404 device_t *children; 1405 int child_count, i; 1406 1407 if (device_get_children(dev, &children, &child_count) != 0) 1408 return; 1409 for (i = 0; i < child_count; i++) { 1410 ad = device_get_ivars(children[i]); 1411 rl = &ad->ad_rl; 1412 1413 /* Don't reserve system resources. */ 1414 if (ACPI_ID_PROBE(dev, children[i], sysres_ids, NULL) <= 0) 1415 continue; 1416 1417 STAILQ_FOREACH(rle, rl, link) { 1418 /* 1419 * Don't reserve IRQ resources. There are many sticky things 1420 * to get right otherwise (e.g. IRQs for psm, atkbd, and HPET 1421 * when using legacy routing). 1422 */ 1423 if (rle->type == SYS_RES_IRQ) 1424 continue; 1425 1426 /* 1427 * Don't reserve the resource if it is already allocated. 1428 * The acpi_ec(4) driver can allocate its resources early 1429 * if ECDT is present. 1430 */ 1431 if (rle->res != NULL) 1432 continue; 1433 1434 /* 1435 * Try to reserve the resource from our parent. If this 1436 * fails because the resource is a system resource, just 1437 * let it be. The resource range is already reserved so 1438 * that other devices will not use it. If the driver 1439 * needs to allocate the resource, then 1440 * acpi_alloc_resource() will sub-alloc from the system 1441 * resource. 1442 */ 1443 resource_list_reserve(rl, dev, children[i], rle->type, &rle->rid, 1444 rle->start, rle->end, rle->count, 0); 1445 } 1446 } 1447 free(children, M_TEMP); 1448 } 1449 1450 static int 1451 acpi_set_resource(device_t dev, device_t child, int type, int rid, 1452 rman_res_t start, rman_res_t count) 1453 { 1454 struct acpi_device *ad = device_get_ivars(child); 1455 struct resource_list *rl = &ad->ad_rl; 1456 rman_res_t end; 1457 1458 #ifdef INTRNG 1459 /* map with default for now */ 1460 if (type == SYS_RES_IRQ) 1461 start = (rman_res_t)acpi_map_intr(child, (u_int)start, 1462 acpi_get_handle(child)); 1463 #endif 1464 1465 /* If the resource is already allocated, fail. */ 1466 if (resource_list_busy(rl, type, rid)) 1467 return (EBUSY); 1468 1469 /* If the resource is already reserved, release it. */ 1470 if (resource_list_reserved(rl, type, rid)) 1471 resource_list_unreserve(rl, dev, child, type, rid); 1472 1473 /* Add the resource. */ 1474 end = (start + count - 1); 1475 resource_list_add(rl, type, rid, start, end, count); 1476 return (0); 1477 } 1478 1479 static struct resource * 1480 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, 1481 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 1482 { 1483 #ifndef INTRNG 1484 ACPI_RESOURCE ares; 1485 #endif 1486 struct acpi_device *ad; 1487 struct resource_list_entry *rle; 1488 struct resource_list *rl; 1489 struct resource *res; 1490 int isdefault = RMAN_IS_DEFAULT_RANGE(start, end); 1491 1492 /* 1493 * First attempt at allocating the resource. For direct children, 1494 * use resource_list_alloc() to handle reserved resources. For 1495 * other devices, pass the request up to our parent. 1496 */ 1497 if (bus == device_get_parent(child)) { 1498 ad = device_get_ivars(child); 1499 rl = &ad->ad_rl; 1500 1501 /* 1502 * Simulate the behavior of the ISA bus for direct children 1503 * devices. That is, if a non-default range is specified for 1504 * a resource that doesn't exist, use bus_set_resource() to 1505 * add the resource before allocating it. Note that these 1506 * resources will not be reserved. 1507 */ 1508 if (!isdefault && resource_list_find(rl, type, *rid) == NULL) 1509 resource_list_add(rl, type, *rid, start, end, count); 1510 res = resource_list_alloc(rl, bus, child, type, rid, start, end, count, 1511 flags); 1512 #ifndef INTRNG 1513 if (res != NULL && type == SYS_RES_IRQ) { 1514 /* 1515 * Since bus_config_intr() takes immediate effect, we cannot 1516 * configure the interrupt associated with a device when we 1517 * parse the resources but have to defer it until a driver 1518 * actually allocates the interrupt via bus_alloc_resource(). 1519 * 1520 * XXX: Should we handle the lookup failing? 1521 */ 1522 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares))) 1523 acpi_config_intr(child, &ares); 1524 } 1525 #endif 1526 1527 /* 1528 * If this is an allocation of the "default" range for a given 1529 * RID, fetch the exact bounds for this resource from the 1530 * resource list entry to try to allocate the range from the 1531 * system resource regions. 1532 */ 1533 if (res == NULL && isdefault) { 1534 rle = resource_list_find(rl, type, *rid); 1535 if (rle != NULL) { 1536 start = rle->start; 1537 end = rle->end; 1538 count = rle->count; 1539 } 1540 } 1541 } else 1542 res = bus_generic_alloc_resource(bus, child, type, rid, 1543 start, end, count, flags); 1544 1545 /* 1546 * If the first attempt failed and this is an allocation of a 1547 * specific range, try to satisfy the request via a suballocation 1548 * from our system resource regions. 1549 */ 1550 if (res == NULL && start + count - 1 == end) 1551 res = bus_generic_rman_alloc_resource(bus, child, type, rid, start, end, 1552 count, flags); 1553 return (res); 1554 } 1555 1556 static bool 1557 acpi_is_resource_managed(device_t bus, struct resource *r) 1558 { 1559 struct rman *rm; 1560 1561 rm = acpi_get_rman(bus, rman_get_type(r), rman_get_flags(r)); 1562 if (rm == NULL) 1563 return (false); 1564 return (rman_is_region_manager(r, rm)); 1565 } 1566 1567 static struct resource * 1568 acpi_managed_resource(device_t bus, struct resource *r) 1569 { 1570 struct acpi_softc *sc = device_get_softc(bus); 1571 struct resource_list_entry *rle; 1572 1573 KASSERT(acpi_is_resource_managed(bus, r), 1574 ("resource %p is not suballocated", r)); 1575 1576 STAILQ_FOREACH(rle, &sc->sysres_rl, link) { 1577 if (rle->type != rman_get_type(r) || rle->res == NULL) 1578 continue; 1579 if (rman_get_start(r) >= rman_get_start(rle->res) && 1580 rman_get_end(r) <= rman_get_end(rle->res)) 1581 return (rle->res); 1582 } 1583 return (NULL); 1584 } 1585 1586 static int 1587 acpi_adjust_resource(device_t bus, device_t child, struct resource *r, 1588 rman_res_t start, rman_res_t end) 1589 { 1590 1591 if (acpi_is_resource_managed(bus, r)) 1592 return (rman_adjust_resource(r, start, end)); 1593 return (bus_generic_adjust_resource(bus, child, r, start, end)); 1594 } 1595 1596 static int 1597 acpi_release_resource(device_t bus, device_t child, struct resource *r) 1598 { 1599 /* 1600 * If this resource belongs to one of our internal managers, 1601 * deactivate it and release it to the local pool. 1602 */ 1603 if (acpi_is_resource_managed(bus, r)) 1604 return (bus_generic_rman_release_resource(bus, child, r)); 1605 1606 return (bus_generic_rl_release_resource(bus, child, r)); 1607 } 1608 1609 static void 1610 acpi_delete_resource(device_t bus, device_t child, int type, int rid) 1611 { 1612 struct resource_list *rl; 1613 1614 rl = acpi_get_rlist(bus, child); 1615 if (resource_list_busy(rl, type, rid)) { 1616 device_printf(bus, "delete_resource: Resource still owned by child" 1617 " (type=%d, rid=%d)\n", type, rid); 1618 return; 1619 } 1620 if (resource_list_reserved(rl, type, rid)) 1621 resource_list_unreserve(rl, bus, child, type, rid); 1622 resource_list_delete(rl, type, rid); 1623 } 1624 1625 static int 1626 acpi_activate_resource(device_t bus, device_t child, struct resource *r) 1627 { 1628 if (acpi_is_resource_managed(bus, r)) 1629 return (bus_generic_rman_activate_resource(bus, child, r)); 1630 return (bus_generic_activate_resource(bus, child, r)); 1631 } 1632 1633 static int 1634 acpi_deactivate_resource(device_t bus, device_t child, struct resource *r) 1635 { 1636 if (acpi_is_resource_managed(bus, r)) 1637 return (bus_generic_rman_deactivate_resource(bus, child, r)); 1638 return (bus_generic_deactivate_resource(bus, child, r)); 1639 } 1640 1641 static int 1642 acpi_map_resource(device_t bus, device_t child, struct resource *r, 1643 struct resource_map_request *argsp, struct resource_map *map) 1644 { 1645 struct resource_map_request args; 1646 struct resource *sysres; 1647 rman_res_t length, start; 1648 int error; 1649 1650 if (!acpi_is_resource_managed(bus, r)) 1651 return (bus_generic_map_resource(bus, child, r, argsp, map)); 1652 1653 /* Resources must be active to be mapped. */ 1654 if (!(rman_get_flags(r) & RF_ACTIVE)) 1655 return (ENXIO); 1656 1657 resource_init_map_request(&args); 1658 error = resource_validate_map_request(r, argsp, &args, &start, &length); 1659 if (error) 1660 return (error); 1661 1662 sysres = acpi_managed_resource(bus, r); 1663 if (sysres == NULL) 1664 return (ENOENT); 1665 1666 args.offset = start - rman_get_start(sysres); 1667 args.length = length; 1668 return (bus_map_resource(bus, sysres, &args, map)); 1669 } 1670 1671 static int 1672 acpi_unmap_resource(device_t bus, device_t child, struct resource *r, 1673 struct resource_map *map) 1674 { 1675 struct resource *sysres; 1676 1677 if (!acpi_is_resource_managed(bus, r)) 1678 return (bus_generic_unmap_resource(bus, child, r, map)); 1679 1680 sysres = acpi_managed_resource(bus, r); 1681 if (sysres == NULL) 1682 return (ENOENT); 1683 return (bus_unmap_resource(bus, sysres, map)); 1684 } 1685 1686 /* Allocate an IO port or memory resource, given its GAS. */ 1687 int 1688 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas, 1689 struct resource **res, u_int flags) 1690 { 1691 int error, res_type; 1692 1693 error = ENOMEM; 1694 if (type == NULL || rid == NULL || gas == NULL || res == NULL) 1695 return (EINVAL); 1696 1697 /* We only support memory and IO spaces. */ 1698 switch (gas->SpaceId) { 1699 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 1700 res_type = SYS_RES_MEMORY; 1701 break; 1702 case ACPI_ADR_SPACE_SYSTEM_IO: 1703 res_type = SYS_RES_IOPORT; 1704 break; 1705 default: 1706 return (EOPNOTSUPP); 1707 } 1708 1709 /* 1710 * If the register width is less than 8, assume the BIOS author means 1711 * it is a bit field and just allocate a byte. 1712 */ 1713 if (gas->BitWidth && gas->BitWidth < 8) 1714 gas->BitWidth = 8; 1715 1716 /* Validate the address after we're sure we support the space. */ 1717 if (gas->Address == 0 || gas->BitWidth == 0) 1718 return (EINVAL); 1719 1720 bus_set_resource(dev, res_type, *rid, gas->Address, 1721 gas->BitWidth / 8); 1722 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags); 1723 if (*res != NULL) { 1724 *type = res_type; 1725 error = 0; 1726 } else 1727 bus_delete_resource(dev, res_type, *rid); 1728 1729 return (error); 1730 } 1731 1732 /* Probe _HID and _CID for compatible ISA PNP ids. */ 1733 static uint32_t 1734 acpi_isa_get_logicalid(device_t dev) 1735 { 1736 ACPI_DEVICE_INFO *devinfo; 1737 ACPI_HANDLE h; 1738 uint32_t pnpid; 1739 1740 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1741 1742 /* Fetch and validate the HID. */ 1743 if ((h = acpi_get_handle(dev)) == NULL || 1744 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 1745 return_VALUE (0); 1746 1747 pnpid = (devinfo->Valid & ACPI_VALID_HID) != 0 && 1748 devinfo->HardwareId.Length >= ACPI_EISAID_STRING_SIZE ? 1749 PNP_EISAID(devinfo->HardwareId.String) : 0; 1750 AcpiOsFree(devinfo); 1751 1752 return_VALUE (pnpid); 1753 } 1754 1755 static int 1756 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count) 1757 { 1758 ACPI_DEVICE_INFO *devinfo; 1759 ACPI_PNP_DEVICE_ID *ids; 1760 ACPI_HANDLE h; 1761 uint32_t *pnpid; 1762 int i, valid; 1763 1764 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1765 1766 pnpid = cids; 1767 1768 /* Fetch and validate the CID */ 1769 if ((h = acpi_get_handle(dev)) == NULL || 1770 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 1771 return_VALUE (0); 1772 1773 if ((devinfo->Valid & ACPI_VALID_CID) == 0) { 1774 AcpiOsFree(devinfo); 1775 return_VALUE (0); 1776 } 1777 1778 if (devinfo->CompatibleIdList.Count < count) 1779 count = devinfo->CompatibleIdList.Count; 1780 ids = devinfo->CompatibleIdList.Ids; 1781 for (i = 0, valid = 0; i < count; i++) 1782 if (ids[i].Length >= ACPI_EISAID_STRING_SIZE && 1783 strncmp(ids[i].String, "PNP", 3) == 0) { 1784 *pnpid++ = PNP_EISAID(ids[i].String); 1785 valid++; 1786 } 1787 AcpiOsFree(devinfo); 1788 1789 return_VALUE (valid); 1790 } 1791 1792 static int 1793 acpi_device_id_probe(device_t bus, device_t dev, char **ids, char **match) 1794 { 1795 ACPI_HANDLE h; 1796 ACPI_OBJECT_TYPE t; 1797 int rv; 1798 int i; 1799 1800 h = acpi_get_handle(dev); 1801 if (ids == NULL || h == NULL) 1802 return (ENXIO); 1803 t = acpi_get_type(dev); 1804 if (t != ACPI_TYPE_DEVICE && t != ACPI_TYPE_PROCESSOR) 1805 return (ENXIO); 1806 1807 /* Try to match one of the array of IDs with a HID or CID. */ 1808 for (i = 0; ids[i] != NULL; i++) { 1809 rv = acpi_MatchHid(h, ids[i]); 1810 if (rv == ACPI_MATCHHID_NOMATCH) 1811 continue; 1812 1813 if (match != NULL) { 1814 *match = ids[i]; 1815 } 1816 return ((rv == ACPI_MATCHHID_HID)? 1817 BUS_PROBE_DEFAULT : BUS_PROBE_LOW_PRIORITY); 1818 } 1819 return (ENXIO); 1820 } 1821 1822 static ACPI_STATUS 1823 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname, 1824 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret) 1825 { 1826 ACPI_HANDLE h; 1827 1828 if (dev == NULL) 1829 h = ACPI_ROOT_OBJECT; 1830 else if ((h = acpi_get_handle(dev)) == NULL) 1831 return (AE_BAD_PARAMETER); 1832 return (AcpiEvaluateObject(h, pathname, parameters, ret)); 1833 } 1834 1835 static ACPI_STATUS 1836 acpi_device_get_prop(device_t bus, device_t dev, ACPI_STRING propname, 1837 const ACPI_OBJECT **value) 1838 { 1839 const ACPI_OBJECT *pkg, *name, *val; 1840 struct acpi_device *ad; 1841 ACPI_STATUS status; 1842 int i; 1843 1844 ad = device_get_ivars(dev); 1845 1846 if (ad == NULL || propname == NULL) 1847 return (AE_BAD_PARAMETER); 1848 if (ad->dsd_pkg == NULL) { 1849 if (ad->dsd.Pointer == NULL) { 1850 status = acpi_find_dsd(ad); 1851 if (ACPI_FAILURE(status)) 1852 return (status); 1853 } else { 1854 return (AE_NOT_FOUND); 1855 } 1856 } 1857 1858 for (i = 0; i < ad->dsd_pkg->Package.Count; i ++) { 1859 pkg = &ad->dsd_pkg->Package.Elements[i]; 1860 if (pkg->Type != ACPI_TYPE_PACKAGE || pkg->Package.Count != 2) 1861 continue; 1862 1863 name = &pkg->Package.Elements[0]; 1864 val = &pkg->Package.Elements[1]; 1865 if (name->Type != ACPI_TYPE_STRING) 1866 continue; 1867 if (strncmp(propname, name->String.Pointer, name->String.Length) == 0) { 1868 if (value != NULL) 1869 *value = val; 1870 1871 return (AE_OK); 1872 } 1873 } 1874 1875 return (AE_NOT_FOUND); 1876 } 1877 1878 static ACPI_STATUS 1879 acpi_find_dsd(struct acpi_device *ad) 1880 { 1881 const ACPI_OBJECT *dsd, *guid, *pkg; 1882 ACPI_STATUS status; 1883 1884 ad->dsd.Length = ACPI_ALLOCATE_BUFFER; 1885 ad->dsd.Pointer = NULL; 1886 ad->dsd_pkg = NULL; 1887 1888 status = AcpiEvaluateObject(ad->ad_handle, "_DSD", NULL, &ad->dsd); 1889 if (ACPI_FAILURE(status)) 1890 return (status); 1891 1892 dsd = ad->dsd.Pointer; 1893 guid = &dsd->Package.Elements[0]; 1894 pkg = &dsd->Package.Elements[1]; 1895 1896 if (guid->Type != ACPI_TYPE_BUFFER || pkg->Type != ACPI_TYPE_PACKAGE || 1897 guid->Buffer.Length != sizeof(acpi_dsd_uuid)) 1898 return (AE_NOT_FOUND); 1899 if (memcmp(guid->Buffer.Pointer, &acpi_dsd_uuid, 1900 sizeof(acpi_dsd_uuid)) == 0) { 1901 1902 ad->dsd_pkg = pkg; 1903 return (AE_OK); 1904 } 1905 1906 return (AE_NOT_FOUND); 1907 } 1908 1909 static ssize_t 1910 acpi_bus_get_prop_handle(const ACPI_OBJECT *hobj, void *propvalue, size_t size) 1911 { 1912 ACPI_OBJECT *pobj; 1913 ACPI_HANDLE h; 1914 1915 if (hobj->Type != ACPI_TYPE_PACKAGE) 1916 goto err; 1917 if (hobj->Package.Count != 1) 1918 goto err; 1919 1920 pobj = &hobj->Package.Elements[0]; 1921 if (pobj == NULL) 1922 goto err; 1923 if (pobj->Type != ACPI_TYPE_LOCAL_REFERENCE) 1924 goto err; 1925 1926 h = acpi_GetReference(NULL, pobj); 1927 if (h == NULL) 1928 goto err; 1929 1930 if (propvalue != NULL && size >= sizeof(ACPI_HANDLE)) 1931 *(ACPI_HANDLE *)propvalue = h; 1932 return (sizeof(ACPI_HANDLE)); 1933 1934 err: 1935 return (-1); 1936 } 1937 1938 static ssize_t 1939 acpi_bus_get_prop(device_t bus, device_t child, const char *propname, 1940 void *propvalue, size_t size, device_property_type_t type) 1941 { 1942 ACPI_STATUS status; 1943 const ACPI_OBJECT *obj; 1944 1945 status = acpi_device_get_prop(bus, child, __DECONST(char *, propname), 1946 &obj); 1947 if (ACPI_FAILURE(status)) 1948 return (-1); 1949 1950 switch (type) { 1951 case DEVICE_PROP_ANY: 1952 case DEVICE_PROP_BUFFER: 1953 case DEVICE_PROP_UINT32: 1954 case DEVICE_PROP_UINT64: 1955 break; 1956 case DEVICE_PROP_HANDLE: 1957 return (acpi_bus_get_prop_handle(obj, propvalue, size)); 1958 default: 1959 return (-1); 1960 } 1961 1962 switch (obj->Type) { 1963 case ACPI_TYPE_INTEGER: 1964 if (type == DEVICE_PROP_UINT32) { 1965 if (propvalue != NULL && size >= sizeof(uint32_t)) 1966 *((uint32_t *)propvalue) = obj->Integer.Value; 1967 return (sizeof(uint32_t)); 1968 } 1969 if (propvalue != NULL && size >= sizeof(uint64_t)) 1970 *((uint64_t *) propvalue) = obj->Integer.Value; 1971 return (sizeof(uint64_t)); 1972 1973 case ACPI_TYPE_STRING: 1974 if (type != DEVICE_PROP_ANY && 1975 type != DEVICE_PROP_BUFFER) 1976 return (-1); 1977 1978 if (propvalue != NULL && size > 0) 1979 memcpy(propvalue, obj->String.Pointer, 1980 MIN(size, obj->String.Length)); 1981 return (obj->String.Length); 1982 1983 case ACPI_TYPE_BUFFER: 1984 if (propvalue != NULL && size > 0) 1985 memcpy(propvalue, obj->Buffer.Pointer, 1986 MIN(size, obj->Buffer.Length)); 1987 return (obj->Buffer.Length); 1988 1989 case ACPI_TYPE_PACKAGE: 1990 if (propvalue != NULL && size >= sizeof(ACPI_OBJECT *)) { 1991 *((ACPI_OBJECT **) propvalue) = 1992 __DECONST(ACPI_OBJECT *, obj); 1993 } 1994 return (sizeof(ACPI_OBJECT *)); 1995 1996 case ACPI_TYPE_LOCAL_REFERENCE: 1997 if (propvalue != NULL && size >= sizeof(ACPI_HANDLE)) { 1998 ACPI_HANDLE h; 1999 2000 h = acpi_GetReference(NULL, 2001 __DECONST(ACPI_OBJECT *, obj)); 2002 memcpy(propvalue, h, sizeof(ACPI_HANDLE)); 2003 } 2004 return (sizeof(ACPI_HANDLE)); 2005 default: 2006 return (0); 2007 } 2008 } 2009 2010 int 2011 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate) 2012 { 2013 struct acpi_softc *sc; 2014 ACPI_HANDLE handle; 2015 ACPI_STATUS status; 2016 char sxd[8]; 2017 2018 handle = acpi_get_handle(dev); 2019 2020 /* 2021 * XXX If we find these devices, don't try to power them down. 2022 * The serial and IRDA ports on my T23 hang the system when 2023 * set to D3 and it appears that such legacy devices may 2024 * need special handling in their drivers. 2025 */ 2026 if (dstate == NULL || handle == NULL || 2027 acpi_MatchHid(handle, "PNP0500") || 2028 acpi_MatchHid(handle, "PNP0501") || 2029 acpi_MatchHid(handle, "PNP0502") || 2030 acpi_MatchHid(handle, "PNP0510") || 2031 acpi_MatchHid(handle, "PNP0511")) 2032 return (ENXIO); 2033 2034 /* 2035 * Override next state with the value from _SxD, if present. 2036 * Note illegal _S0D is evaluated because some systems expect this. 2037 */ 2038 sc = device_get_softc(bus); 2039 snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate); 2040 status = acpi_GetInteger(handle, sxd, dstate); 2041 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { 2042 device_printf(dev, "failed to get %s on %s: %s\n", sxd, 2043 acpi_name(handle), AcpiFormatException(status)); 2044 return (ENXIO); 2045 } 2046 2047 return (0); 2048 } 2049 2050 /* Callback arg for our implementation of walking the namespace. */ 2051 struct acpi_device_scan_ctx { 2052 acpi_scan_cb_t user_fn; 2053 void *arg; 2054 ACPI_HANDLE parent; 2055 }; 2056 2057 static ACPI_STATUS 2058 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval) 2059 { 2060 struct acpi_device_scan_ctx *ctx; 2061 device_t dev, old_dev; 2062 ACPI_STATUS status; 2063 ACPI_OBJECT_TYPE type; 2064 2065 /* 2066 * Skip this device if we think we'll have trouble with it or it is 2067 * the parent where the scan began. 2068 */ 2069 ctx = (struct acpi_device_scan_ctx *)arg; 2070 if (acpi_avoid(h) || h == ctx->parent) 2071 return (AE_OK); 2072 2073 /* If this is not a valid device type (e.g., a method), skip it. */ 2074 if (ACPI_FAILURE(AcpiGetType(h, &type))) 2075 return (AE_OK); 2076 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR && 2077 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER) 2078 return (AE_OK); 2079 2080 /* 2081 * Call the user function with the current device. If it is unchanged 2082 * afterwards, return. Otherwise, we update the handle to the new dev. 2083 */ 2084 old_dev = acpi_get_device(h); 2085 dev = old_dev; 2086 status = ctx->user_fn(h, &dev, level, ctx->arg); 2087 if (ACPI_FAILURE(status) || old_dev == dev) 2088 return (status); 2089 2090 /* Remove the old child and its connection to the handle. */ 2091 if (old_dev != NULL) 2092 device_delete_child(device_get_parent(old_dev), old_dev); 2093 2094 /* Recreate the handle association if the user created a device. */ 2095 if (dev != NULL) 2096 AcpiAttachData(h, acpi_fake_objhandler, dev); 2097 2098 return (AE_OK); 2099 } 2100 2101 static ACPI_STATUS 2102 acpi_device_scan_children(device_t bus, device_t dev, int max_depth, 2103 acpi_scan_cb_t user_fn, void *arg) 2104 { 2105 ACPI_HANDLE h; 2106 struct acpi_device_scan_ctx ctx; 2107 2108 if (acpi_disabled("children")) 2109 return (AE_OK); 2110 2111 if (dev == NULL) 2112 h = ACPI_ROOT_OBJECT; 2113 else if ((h = acpi_get_handle(dev)) == NULL) 2114 return (AE_BAD_PARAMETER); 2115 ctx.user_fn = user_fn; 2116 ctx.arg = arg; 2117 ctx.parent = h; 2118 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth, 2119 acpi_device_scan_cb, NULL, &ctx, NULL)); 2120 } 2121 2122 /* 2123 * Even though ACPI devices are not PCI, we use the PCI approach for setting 2124 * device power states since it's close enough to ACPI. 2125 */ 2126 int 2127 acpi_set_powerstate(device_t child, int state) 2128 { 2129 ACPI_HANDLE h; 2130 ACPI_STATUS status; 2131 2132 h = acpi_get_handle(child); 2133 if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX) 2134 return (EINVAL); 2135 if (h == NULL) 2136 return (0); 2137 2138 /* Ignore errors if the power methods aren't present. */ 2139 status = acpi_pwr_switch_consumer(h, state); 2140 if (ACPI_SUCCESS(status)) { 2141 if (bootverbose) 2142 device_printf(child, "set ACPI power state D%d on %s\n", 2143 state, acpi_name(h)); 2144 } else if (status != AE_NOT_FOUND) 2145 device_printf(child, 2146 "failed to set ACPI power state D%d on %s: %s\n", state, 2147 acpi_name(h), AcpiFormatException(status)); 2148 2149 return (0); 2150 } 2151 2152 static int 2153 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids) 2154 { 2155 int result, cid_count, i; 2156 uint32_t lid, cids[8]; 2157 2158 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 2159 2160 /* 2161 * ISA-style drivers attached to ACPI may persist and 2162 * probe manually if we return ENOENT. We never want 2163 * that to happen, so don't ever return it. 2164 */ 2165 result = ENXIO; 2166 2167 /* Scan the supplied IDs for a match */ 2168 lid = acpi_isa_get_logicalid(child); 2169 cid_count = acpi_isa_get_compatid(child, cids, 8); 2170 while (ids && ids->ip_id) { 2171 if (lid == ids->ip_id) { 2172 result = 0; 2173 goto out; 2174 } 2175 for (i = 0; i < cid_count; i++) { 2176 if (cids[i] == ids->ip_id) { 2177 result = 0; 2178 goto out; 2179 } 2180 } 2181 ids++; 2182 } 2183 2184 out: 2185 if (result == 0 && ids->ip_desc) 2186 device_set_desc(child, ids->ip_desc); 2187 2188 return_VALUE (result); 2189 } 2190 2191 /* 2192 * Look for a MCFG table. If it is present, use the settings for 2193 * domain (segment) 0 to setup PCI config space access via the memory 2194 * map. 2195 * 2196 * On non-x86 architectures (arm64 for now), this will be done from the 2197 * PCI host bridge driver. 2198 */ 2199 static void 2200 acpi_enable_pcie(void) 2201 { 2202 #if defined(__i386__) || defined(__amd64__) 2203 ACPI_TABLE_HEADER *hdr; 2204 ACPI_MCFG_ALLOCATION *alloc, *end; 2205 ACPI_STATUS status; 2206 2207 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr); 2208 if (ACPI_FAILURE(status)) 2209 return; 2210 2211 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length); 2212 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1); 2213 while (alloc < end) { 2214 pcie_cfgregopen(alloc->Address, alloc->PciSegment, 2215 alloc->StartBusNumber, alloc->EndBusNumber); 2216 alloc++; 2217 } 2218 #endif 2219 } 2220 2221 static void 2222 acpi_platform_osc(device_t dev) 2223 { 2224 ACPI_HANDLE sb_handle; 2225 ACPI_STATUS status; 2226 uint32_t cap_set[2]; 2227 2228 /* 0811B06E-4A27-44F9-8D60-3CBBC22E7B48 */ 2229 static uint8_t acpi_platform_uuid[ACPI_UUID_LENGTH] = { 2230 0x6e, 0xb0, 0x11, 0x08, 0x27, 0x4a, 0xf9, 0x44, 2231 0x8d, 0x60, 0x3c, 0xbb, 0xc2, 0x2e, 0x7b, 0x48 2232 }; 2233 2234 if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) 2235 return; 2236 2237 cap_set[1] = 0x10; /* APEI Support */ 2238 status = acpi_EvaluateOSC(sb_handle, acpi_platform_uuid, 1, 2239 nitems(cap_set), cap_set, cap_set, false); 2240 if (ACPI_FAILURE(status)) { 2241 if (status == AE_NOT_FOUND) 2242 return; 2243 device_printf(dev, "_OSC failed: %s\n", 2244 AcpiFormatException(status)); 2245 return; 2246 } 2247 } 2248 2249 /* 2250 * Scan all of the ACPI namespace and attach child devices. 2251 * 2252 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and 2253 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec. 2254 * However, in violation of the spec, some systems place their PCI link 2255 * devices in \, so we have to walk the whole namespace. We check the 2256 * type of namespace nodes, so this should be ok. 2257 */ 2258 static void 2259 acpi_probe_children(device_t bus) 2260 { 2261 2262 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 2263 2264 /* 2265 * Scan the namespace and insert placeholders for all the devices that 2266 * we find. We also probe/attach any early devices. 2267 * 2268 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because 2269 * we want to create nodes for all devices, not just those that are 2270 * currently present. (This assumes that we don't want to create/remove 2271 * devices as they appear, which might be smarter.) 2272 */ 2273 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n")); 2274 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child, 2275 NULL, bus, NULL); 2276 2277 /* Pre-allocate resources for our rman from any sysresource devices. */ 2278 acpi_sysres_alloc(bus); 2279 2280 /* Create any static children by calling device identify methods. */ 2281 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n")); 2282 bus_identify_children(bus); 2283 2284 /* Probe/attach all children, created statically and from the namespace. */ 2285 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "acpi bus_attach_children\n")); 2286 bus_attach_children(bus); 2287 2288 /* 2289 * Reserve resources allocated to children but not yet allocated 2290 * by a driver. 2291 */ 2292 acpi_reserve_resources(bus); 2293 2294 /* Attach wake sysctls. */ 2295 acpi_wake_sysctl_walk(bus); 2296 2297 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n")); 2298 return_VOID; 2299 } 2300 2301 /* 2302 * Determine the probe order for a given device. 2303 */ 2304 static void 2305 acpi_probe_order(ACPI_HANDLE handle, int *order) 2306 { 2307 ACPI_OBJECT_TYPE type; 2308 2309 /* 2310 * 0. CPUs 2311 * 1. I/O port and memory system resource holders 2312 * 2. Clocks and timers (to handle early accesses) 2313 * 3. Embedded controllers (to handle early accesses) 2314 * 4. PCI Link Devices 2315 */ 2316 AcpiGetType(handle, &type); 2317 if (type == ACPI_TYPE_PROCESSOR) 2318 *order = 0; 2319 else if (acpi_MatchHid(handle, "PNP0C01") || 2320 acpi_MatchHid(handle, "PNP0C02")) 2321 *order = 1; 2322 else if (acpi_MatchHid(handle, "PNP0100") || 2323 acpi_MatchHid(handle, "PNP0103") || 2324 acpi_MatchHid(handle, "PNP0B00")) 2325 *order = 2; 2326 else if (acpi_MatchHid(handle, "PNP0C09")) 2327 *order = 3; 2328 else if (acpi_MatchHid(handle, "PNP0C0F")) 2329 *order = 4; 2330 } 2331 2332 /* 2333 * Evaluate a child device and determine whether we might attach a device to 2334 * it. 2335 */ 2336 static ACPI_STATUS 2337 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 2338 { 2339 ACPI_DEVICE_INFO *devinfo; 2340 struct acpi_device *ad; 2341 struct acpi_prw_data prw; 2342 ACPI_OBJECT_TYPE type; 2343 ACPI_HANDLE h; 2344 device_t bus, child; 2345 char *handle_str; 2346 int d, order; 2347 2348 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 2349 2350 if (acpi_disabled("children")) 2351 return_ACPI_STATUS (AE_OK); 2352 2353 /* Skip this device if we think we'll have trouble with it. */ 2354 if (acpi_avoid(handle)) 2355 return_ACPI_STATUS (AE_OK); 2356 2357 bus = (device_t)context; 2358 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) { 2359 handle_str = acpi_name(handle); 2360 switch (type) { 2361 case ACPI_TYPE_DEVICE: 2362 /* 2363 * Since we scan from \, be sure to skip system scope objects. 2364 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around 2365 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run 2366 * during the initialization and \_TZ_ is to support Notify() on it. 2367 */ 2368 if (strcmp(handle_str, "\\_SB_") == 0 || 2369 strcmp(handle_str, "\\_TZ_") == 0) 2370 break; 2371 if (acpi_parse_prw(handle, &prw) == 0) 2372 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit); 2373 2374 /* 2375 * Ignore devices that do not have a _HID or _CID. They should 2376 * be discovered by other buses (e.g. the PCI bus driver). 2377 */ 2378 if (!acpi_has_hid(handle)) 2379 break; 2380 /* FALLTHROUGH */ 2381 case ACPI_TYPE_PROCESSOR: 2382 case ACPI_TYPE_THERMAL: 2383 case ACPI_TYPE_POWER: 2384 /* 2385 * Create a placeholder device for this node. Sort the 2386 * placeholder so that the probe/attach passes will run 2387 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER 2388 * are reserved for special objects (i.e., system 2389 * resources). 2390 */ 2391 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str)); 2392 order = level * 10 + ACPI_DEV_BASE_ORDER; 2393 acpi_probe_order(handle, &order); 2394 child = BUS_ADD_CHILD(bus, order, NULL, DEVICE_UNIT_ANY); 2395 if (child == NULL) 2396 break; 2397 2398 /* Associate the handle with the device_t and vice versa. */ 2399 acpi_set_handle(child, handle); 2400 AcpiAttachData(handle, acpi_fake_objhandler, child); 2401 2402 /* 2403 * Check that the device is present. If it's not present, 2404 * leave it disabled (so that we have a device_t attached to 2405 * the handle, but we don't probe it). 2406 * 2407 * XXX PCI link devices sometimes report "present" but not 2408 * "functional" (i.e. if disabled). Go ahead and probe them 2409 * anyway since we may enable them later. 2410 */ 2411 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) { 2412 /* Never disable PCI link devices. */ 2413 if (acpi_MatchHid(handle, "PNP0C0F")) 2414 break; 2415 2416 /* 2417 * RTC Device should be enabled for CMOS register space 2418 * unless FADT indicate it is not present. 2419 * (checked in RTC probe routine.) 2420 */ 2421 if (acpi_MatchHid(handle, "PNP0B00")) 2422 break; 2423 2424 /* 2425 * Docking stations should remain enabled since the system 2426 * may be undocked at boot. 2427 */ 2428 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h))) 2429 break; 2430 2431 device_disable(child); 2432 break; 2433 } 2434 2435 /* 2436 * Get the device's resource settings and attach them. 2437 * Note that if the device has _PRS but no _CRS, we need 2438 * to decide when it's appropriate to try to configure the 2439 * device. Ignore the return value here; it's OK for the 2440 * device not to have any resources. 2441 */ 2442 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL); 2443 2444 ad = device_get_ivars(child); 2445 ad->ad_cls_class = 0xffffff; 2446 if (ACPI_SUCCESS(AcpiGetObjectInfo(handle, &devinfo))) { 2447 if ((devinfo->Valid & ACPI_VALID_CLS) != 0 && 2448 devinfo->ClassCode.Length >= ACPI_PCICLS_STRING_SIZE) { 2449 ad->ad_cls_class = strtoul(devinfo->ClassCode.String, 2450 NULL, 16); 2451 } 2452 AcpiOsFree(devinfo); 2453 } 2454 2455 d = acpi_pxm_parse(child); 2456 if (d >= 0) 2457 ad->ad_domain = d; 2458 break; 2459 } 2460 } 2461 2462 return_ACPI_STATUS (AE_OK); 2463 } 2464 2465 /* 2466 * AcpiAttachData() requires an object handler but never uses it. This is a 2467 * placeholder object handler so we can store a device_t in an ACPI_HANDLE. 2468 */ 2469 void 2470 acpi_fake_objhandler(ACPI_HANDLE h, void *data) 2471 { 2472 } 2473 2474 static void 2475 acpi_shutdown_final(void *arg, int howto) 2476 { 2477 struct acpi_softc *sc = (struct acpi_softc *)arg; 2478 register_t intr; 2479 ACPI_STATUS status; 2480 2481 /* 2482 * XXX Shutdown code should only run on the BSP (cpuid 0). 2483 * Some chipsets do not power off the system correctly if called from 2484 * an AP. 2485 */ 2486 if ((howto & RB_POWEROFF) != 0) { 2487 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 2488 if (ACPI_FAILURE(status)) { 2489 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 2490 AcpiFormatException(status)); 2491 return; 2492 } 2493 device_printf(sc->acpi_dev, "Powering system off\n"); 2494 intr = intr_disable(); 2495 status = AcpiEnterSleepState(ACPI_STATE_S5); 2496 if (ACPI_FAILURE(status)) { 2497 intr_restore(intr); 2498 device_printf(sc->acpi_dev, "power-off failed - %s\n", 2499 AcpiFormatException(status)); 2500 } else { 2501 DELAY(1000000); 2502 intr_restore(intr); 2503 device_printf(sc->acpi_dev, "power-off failed - timeout\n"); 2504 } 2505 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) { 2506 /* Reboot using the reset register. */ 2507 status = AcpiReset(); 2508 if (ACPI_SUCCESS(status)) { 2509 DELAY(1000000); 2510 device_printf(sc->acpi_dev, "reset failed - timeout\n"); 2511 } else if (status != AE_NOT_EXIST) 2512 device_printf(sc->acpi_dev, "reset failed - %s\n", 2513 AcpiFormatException(status)); 2514 } else if (sc->acpi_do_disable && !KERNEL_PANICKED()) { 2515 /* 2516 * Only disable ACPI if the user requested. On some systems, writing 2517 * the disable value to SMI_CMD hangs the system. 2518 */ 2519 device_printf(sc->acpi_dev, "Shutting down\n"); 2520 AcpiTerminate(); 2521 } 2522 } 2523 2524 static void 2525 acpi_enable_fixed_events(struct acpi_softc *sc) 2526 { 2527 static int first_time = 1; 2528 2529 /* Enable and clear fixed events and install handlers. */ 2530 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) { 2531 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 2532 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON, 2533 acpi_event_power_button_sleep, sc); 2534 if (first_time) 2535 device_printf(sc->acpi_dev, "Power Button (fixed)\n"); 2536 } 2537 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) { 2538 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 2539 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON, 2540 acpi_event_sleep_button_sleep, sc); 2541 if (first_time) 2542 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n"); 2543 } 2544 2545 first_time = 0; 2546 } 2547 2548 /* 2549 * Returns true if the device is actually present and should 2550 * be attached to. This requires the present, enabled, UI-visible 2551 * and diagnostics-passed bits to be set. 2552 */ 2553 BOOLEAN 2554 acpi_DeviceIsPresent(device_t dev) 2555 { 2556 ACPI_HANDLE h; 2557 UINT32 s; 2558 ACPI_STATUS status; 2559 2560 h = acpi_get_handle(dev); 2561 if (h == NULL) 2562 return (FALSE); 2563 2564 #ifdef ACPI_EARLY_EPYC_WAR 2565 /* 2566 * Certain Treadripper boards always returns 0 for FreeBSD because it 2567 * only returns non-zero for the OS string "Windows 2015". Otherwise it 2568 * will return zero. Force them to always be treated as present. 2569 * Beata versions were worse: they always returned 0. 2570 */ 2571 if (acpi_MatchHid(h, "AMDI0020") || acpi_MatchHid(h, "AMDI0010")) 2572 return (TRUE); 2573 #endif 2574 2575 status = acpi_GetInteger(h, "_STA", &s); 2576 2577 /* 2578 * If no _STA method or if it failed, then assume that 2579 * the device is present. 2580 */ 2581 if (ACPI_FAILURE(status)) 2582 return (TRUE); 2583 2584 return (ACPI_DEVICE_PRESENT(s) ? TRUE : FALSE); 2585 } 2586 2587 /* 2588 * Returns true if the battery is actually present and inserted. 2589 */ 2590 BOOLEAN 2591 acpi_BatteryIsPresent(device_t dev) 2592 { 2593 ACPI_HANDLE h; 2594 UINT32 s; 2595 ACPI_STATUS status; 2596 2597 h = acpi_get_handle(dev); 2598 if (h == NULL) 2599 return (FALSE); 2600 status = acpi_GetInteger(h, "_STA", &s); 2601 2602 /* 2603 * If no _STA method or if it failed, then assume that 2604 * the device is present. 2605 */ 2606 if (ACPI_FAILURE(status)) 2607 return (TRUE); 2608 2609 return (ACPI_BATTERY_PRESENT(s) ? TRUE : FALSE); 2610 } 2611 2612 /* 2613 * Returns true if a device has at least one valid device ID. 2614 */ 2615 BOOLEAN 2616 acpi_has_hid(ACPI_HANDLE h) 2617 { 2618 ACPI_DEVICE_INFO *devinfo; 2619 BOOLEAN ret; 2620 2621 if (h == NULL || 2622 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 2623 return (FALSE); 2624 2625 ret = FALSE; 2626 if ((devinfo->Valid & ACPI_VALID_HID) != 0) 2627 ret = TRUE; 2628 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) 2629 if (devinfo->CompatibleIdList.Count > 0) 2630 ret = TRUE; 2631 2632 AcpiOsFree(devinfo); 2633 return (ret); 2634 } 2635 2636 /* 2637 * Match a HID string against a handle 2638 * returns ACPI_MATCHHID_HID if _HID match 2639 * ACPI_MATCHHID_CID if _CID match and not _HID match. 2640 * ACPI_MATCHHID_NOMATCH=0 if no match. 2641 */ 2642 int 2643 acpi_MatchHid(ACPI_HANDLE h, const char *hid) 2644 { 2645 ACPI_DEVICE_INFO *devinfo; 2646 BOOLEAN ret; 2647 int i; 2648 2649 if (hid == NULL || h == NULL || 2650 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 2651 return (ACPI_MATCHHID_NOMATCH); 2652 2653 ret = ACPI_MATCHHID_NOMATCH; 2654 if ((devinfo->Valid & ACPI_VALID_HID) != 0 && 2655 strcmp(hid, devinfo->HardwareId.String) == 0) 2656 ret = ACPI_MATCHHID_HID; 2657 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) 2658 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) { 2659 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) { 2660 ret = ACPI_MATCHHID_CID; 2661 break; 2662 } 2663 } 2664 2665 AcpiOsFree(devinfo); 2666 return (ret); 2667 } 2668 2669 /* 2670 * Return the handle of a named object within our scope, ie. that of (parent) 2671 * or one if its parents. 2672 */ 2673 ACPI_STATUS 2674 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result) 2675 { 2676 ACPI_HANDLE r; 2677 ACPI_STATUS status; 2678 2679 /* Walk back up the tree to the root */ 2680 for (;;) { 2681 status = AcpiGetHandle(parent, path, &r); 2682 if (ACPI_SUCCESS(status)) { 2683 *result = r; 2684 return (AE_OK); 2685 } 2686 /* XXX Return error here? */ 2687 if (status != AE_NOT_FOUND) 2688 return (AE_OK); 2689 if (ACPI_FAILURE(AcpiGetParent(parent, &r))) 2690 return (AE_NOT_FOUND); 2691 parent = r; 2692 } 2693 } 2694 2695 ACPI_STATUS 2696 acpi_GetProperty(device_t dev, ACPI_STRING propname, 2697 const ACPI_OBJECT **value) 2698 { 2699 device_t bus = device_get_parent(dev); 2700 2701 return (ACPI_GET_PROPERTY(bus, dev, propname, value)); 2702 } 2703 2704 /* 2705 * Allocate a buffer with a preset data size. 2706 */ 2707 ACPI_BUFFER * 2708 acpi_AllocBuffer(int size) 2709 { 2710 ACPI_BUFFER *buf; 2711 2712 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL) 2713 return (NULL); 2714 buf->Length = size; 2715 buf->Pointer = (void *)(buf + 1); 2716 return (buf); 2717 } 2718 2719 ACPI_STATUS 2720 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number) 2721 { 2722 ACPI_OBJECT arg1; 2723 ACPI_OBJECT_LIST args; 2724 2725 arg1.Type = ACPI_TYPE_INTEGER; 2726 arg1.Integer.Value = number; 2727 args.Count = 1; 2728 args.Pointer = &arg1; 2729 2730 return (AcpiEvaluateObject(handle, path, &args, NULL)); 2731 } 2732 2733 /* 2734 * Evaluate a path that should return an integer. 2735 */ 2736 ACPI_STATUS 2737 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number) 2738 { 2739 ACPI_STATUS status; 2740 ACPI_BUFFER buf; 2741 ACPI_OBJECT param; 2742 2743 if (handle == NULL) 2744 handle = ACPI_ROOT_OBJECT; 2745 2746 /* 2747 * Assume that what we've been pointed at is an Integer object, or 2748 * a method that will return an Integer. 2749 */ 2750 buf.Pointer = ¶m; 2751 buf.Length = sizeof(param); 2752 status = AcpiEvaluateObject(handle, path, NULL, &buf); 2753 if (ACPI_SUCCESS(status)) { 2754 if (param.Type == ACPI_TYPE_INTEGER) 2755 *number = param.Integer.Value; 2756 else 2757 status = AE_TYPE; 2758 } 2759 2760 /* 2761 * In some applications, a method that's expected to return an Integer 2762 * may instead return a Buffer (probably to simplify some internal 2763 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer, 2764 * convert it into an Integer as best we can. 2765 * 2766 * This is a hack. 2767 */ 2768 if (status == AE_BUFFER_OVERFLOW) { 2769 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) { 2770 status = AE_NO_MEMORY; 2771 } else { 2772 status = AcpiEvaluateObject(handle, path, NULL, &buf); 2773 if (ACPI_SUCCESS(status)) 2774 status = acpi_ConvertBufferToInteger(&buf, number); 2775 AcpiOsFree(buf.Pointer); 2776 } 2777 } 2778 return (status); 2779 } 2780 2781 ACPI_STATUS 2782 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number) 2783 { 2784 ACPI_OBJECT *p; 2785 UINT8 *val; 2786 int i; 2787 2788 p = (ACPI_OBJECT *)bufp->Pointer; 2789 if (p->Type == ACPI_TYPE_INTEGER) { 2790 *number = p->Integer.Value; 2791 return (AE_OK); 2792 } 2793 if (p->Type != ACPI_TYPE_BUFFER) 2794 return (AE_TYPE); 2795 if (p->Buffer.Length > sizeof(int)) 2796 return (AE_BAD_DATA); 2797 2798 *number = 0; 2799 val = p->Buffer.Pointer; 2800 for (i = 0; i < p->Buffer.Length; i++) 2801 *number += val[i] << (i * 8); 2802 return (AE_OK); 2803 } 2804 2805 /* 2806 * Iterate over the elements of an a package object, calling the supplied 2807 * function for each element. 2808 * 2809 * XXX possible enhancement might be to abort traversal on error. 2810 */ 2811 ACPI_STATUS 2812 acpi_ForeachPackageObject(ACPI_OBJECT *pkg, 2813 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg) 2814 { 2815 ACPI_OBJECT *comp; 2816 int i; 2817 2818 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE) 2819 return (AE_BAD_PARAMETER); 2820 2821 /* Iterate over components */ 2822 i = 0; 2823 comp = pkg->Package.Elements; 2824 for (; i < pkg->Package.Count; i++, comp++) 2825 func(comp, arg); 2826 2827 return (AE_OK); 2828 } 2829 2830 /* 2831 * Find the (index)th resource object in a set. 2832 */ 2833 ACPI_STATUS 2834 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp) 2835 { 2836 ACPI_RESOURCE *rp; 2837 int i; 2838 2839 rp = (ACPI_RESOURCE *)buf->Pointer; 2840 i = index; 2841 while (i-- > 0) { 2842 /* Range check */ 2843 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 2844 return (AE_BAD_PARAMETER); 2845 2846 /* Check for terminator */ 2847 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0) 2848 return (AE_NOT_FOUND); 2849 rp = ACPI_NEXT_RESOURCE(rp); 2850 } 2851 if (resp != NULL) 2852 *resp = rp; 2853 2854 return (AE_OK); 2855 } 2856 2857 /* 2858 * Append an ACPI_RESOURCE to an ACPI_BUFFER. 2859 * 2860 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER 2861 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible 2862 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of 2863 * resources. 2864 */ 2865 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512 2866 2867 ACPI_STATUS 2868 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res) 2869 { 2870 ACPI_RESOURCE *rp; 2871 void *newp; 2872 2873 /* Initialise the buffer if necessary. */ 2874 if (buf->Pointer == NULL) { 2875 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE; 2876 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL) 2877 return (AE_NO_MEMORY); 2878 rp = (ACPI_RESOURCE *)buf->Pointer; 2879 rp->Type = ACPI_RESOURCE_TYPE_END_TAG; 2880 rp->Length = ACPI_RS_SIZE_MIN; 2881 } 2882 if (res == NULL) 2883 return (AE_OK); 2884 2885 /* 2886 * Scan the current buffer looking for the terminator. 2887 * This will either find the terminator or hit the end 2888 * of the buffer and return an error. 2889 */ 2890 rp = (ACPI_RESOURCE *)buf->Pointer; 2891 for (;;) { 2892 /* Range check, don't go outside the buffer */ 2893 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 2894 return (AE_BAD_PARAMETER); 2895 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0) 2896 break; 2897 rp = ACPI_NEXT_RESOURCE(rp); 2898 } 2899 2900 /* 2901 * Check the size of the buffer and expand if required. 2902 * 2903 * Required size is: 2904 * size of existing resources before terminator + 2905 * size of new resource and header + 2906 * size of terminator. 2907 * 2908 * Note that this loop should really only run once, unless 2909 * for some reason we are stuffing a *really* huge resource. 2910 */ 2911 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) + 2912 res->Length + ACPI_RS_SIZE_NO_DATA + 2913 ACPI_RS_SIZE_MIN) >= buf->Length) { 2914 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL) 2915 return (AE_NO_MEMORY); 2916 bcopy(buf->Pointer, newp, buf->Length); 2917 rp = (ACPI_RESOURCE *)((u_int8_t *)newp + 2918 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer)); 2919 AcpiOsFree(buf->Pointer); 2920 buf->Pointer = newp; 2921 buf->Length += buf->Length; 2922 } 2923 2924 /* Insert the new resource. */ 2925 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA); 2926 2927 /* And add the terminator. */ 2928 rp = ACPI_NEXT_RESOURCE(rp); 2929 rp->Type = ACPI_RESOURCE_TYPE_END_TAG; 2930 rp->Length = ACPI_RS_SIZE_MIN; 2931 2932 return (AE_OK); 2933 } 2934 2935 UINT64 2936 acpi_DSMQuery(ACPI_HANDLE h, const uint8_t *uuid, int revision) 2937 { 2938 /* 2939 * ACPI spec 9.1.1 defines this. 2940 * 2941 * "Arg2: Function Index Represents a specific function whose meaning is 2942 * specific to the UUID and Revision ID. Function indices should start 2943 * with 1. Function number zero is a query function (see the special 2944 * return code defined below)." 2945 */ 2946 ACPI_BUFFER buf; 2947 ACPI_OBJECT *obj; 2948 UINT64 ret = 0; 2949 int i; 2950 2951 if (!ACPI_SUCCESS(acpi_EvaluateDSM(h, uuid, revision, 0, NULL, &buf))) { 2952 ACPI_INFO(("Failed to enumerate DSM functions\n")); 2953 return (0); 2954 } 2955 2956 obj = (ACPI_OBJECT *)buf.Pointer; 2957 KASSERT(obj, ("Object not allowed to be NULL\n")); 2958 2959 /* 2960 * From ACPI 6.2 spec 9.1.1: 2961 * If Function Index = 0, a Buffer containing a function index bitfield. 2962 * Otherwise, the return value and type depends on the UUID and revision 2963 * ID (see below). 2964 */ 2965 switch (obj->Type) { 2966 case ACPI_TYPE_BUFFER: 2967 for (i = 0; i < MIN(obj->Buffer.Length, sizeof(ret)); i++) 2968 ret |= (((uint64_t)obj->Buffer.Pointer[i]) << (i * 8)); 2969 break; 2970 case ACPI_TYPE_INTEGER: 2971 ACPI_BIOS_WARNING((AE_INFO, 2972 "Possibly buggy BIOS with ACPI_TYPE_INTEGER for function enumeration\n")); 2973 ret = obj->Integer.Value; 2974 break; 2975 default: 2976 ACPI_WARNING((AE_INFO, "Unexpected return type %u\n", obj->Type)); 2977 }; 2978 2979 AcpiOsFree(obj); 2980 return ret; 2981 } 2982 2983 /* 2984 * DSM may return multiple types depending on the function. It is therefore 2985 * unsafe to use the typed evaluation. It is highly recommended that the caller 2986 * check the type of the returned object. 2987 */ 2988 ACPI_STATUS 2989 acpi_EvaluateDSM(ACPI_HANDLE handle, const uint8_t *uuid, int revision, 2990 UINT64 function, ACPI_OBJECT *package, ACPI_BUFFER *out_buf) 2991 { 2992 return (acpi_EvaluateDSMTyped(handle, uuid, revision, function, 2993 package, out_buf, ACPI_TYPE_ANY)); 2994 } 2995 2996 ACPI_STATUS 2997 acpi_EvaluateDSMTyped(ACPI_HANDLE handle, const uint8_t *uuid, int revision, 2998 UINT64 function, ACPI_OBJECT *package, ACPI_BUFFER *out_buf, 2999 ACPI_OBJECT_TYPE type) 3000 { 3001 ACPI_OBJECT arg[4]; 3002 ACPI_OBJECT_LIST arglist; 3003 ACPI_BUFFER buf; 3004 ACPI_STATUS status; 3005 3006 if (out_buf == NULL) 3007 return (AE_NO_MEMORY); 3008 3009 arg[0].Type = ACPI_TYPE_BUFFER; 3010 arg[0].Buffer.Length = ACPI_UUID_LENGTH; 3011 arg[0].Buffer.Pointer = __DECONST(uint8_t *, uuid); 3012 arg[1].Type = ACPI_TYPE_INTEGER; 3013 arg[1].Integer.Value = revision; 3014 arg[2].Type = ACPI_TYPE_INTEGER; 3015 arg[2].Integer.Value = function; 3016 if (package) { 3017 arg[3] = *package; 3018 } else { 3019 arg[3].Type = ACPI_TYPE_PACKAGE; 3020 arg[3].Package.Count = 0; 3021 arg[3].Package.Elements = NULL; 3022 } 3023 3024 arglist.Pointer = arg; 3025 arglist.Count = 4; 3026 buf.Pointer = NULL; 3027 buf.Length = ACPI_ALLOCATE_BUFFER; 3028 status = AcpiEvaluateObjectTyped(handle, "_DSM", &arglist, &buf, type); 3029 if (ACPI_FAILURE(status)) 3030 return (status); 3031 3032 KASSERT(ACPI_SUCCESS(status), ("Unexpected status")); 3033 3034 *out_buf = buf; 3035 return (status); 3036 } 3037 3038 ACPI_STATUS 3039 acpi_EvaluateOSC(ACPI_HANDLE handle, uint8_t *uuid, int revision, int count, 3040 uint32_t *caps_in, uint32_t *caps_out, bool query) 3041 { 3042 ACPI_OBJECT arg[4], *ret; 3043 ACPI_OBJECT_LIST arglist; 3044 ACPI_BUFFER buf; 3045 ACPI_STATUS status; 3046 3047 arglist.Pointer = arg; 3048 arglist.Count = 4; 3049 arg[0].Type = ACPI_TYPE_BUFFER; 3050 arg[0].Buffer.Length = ACPI_UUID_LENGTH; 3051 arg[0].Buffer.Pointer = uuid; 3052 arg[1].Type = ACPI_TYPE_INTEGER; 3053 arg[1].Integer.Value = revision; 3054 arg[2].Type = ACPI_TYPE_INTEGER; 3055 arg[2].Integer.Value = count; 3056 arg[3].Type = ACPI_TYPE_BUFFER; 3057 arg[3].Buffer.Length = count * sizeof(*caps_in); 3058 arg[3].Buffer.Pointer = (uint8_t *)caps_in; 3059 caps_in[0] = query ? 1 : 0; 3060 buf.Pointer = NULL; 3061 buf.Length = ACPI_ALLOCATE_BUFFER; 3062 status = AcpiEvaluateObjectTyped(handle, "_OSC", &arglist, &buf, 3063 ACPI_TYPE_BUFFER); 3064 if (ACPI_FAILURE(status)) 3065 return (status); 3066 if (caps_out != NULL) { 3067 ret = buf.Pointer; 3068 if (ret->Buffer.Length != count * sizeof(*caps_out)) { 3069 AcpiOsFree(buf.Pointer); 3070 return (AE_BUFFER_OVERFLOW); 3071 } 3072 bcopy(ret->Buffer.Pointer, caps_out, ret->Buffer.Length); 3073 } 3074 AcpiOsFree(buf.Pointer); 3075 return (status); 3076 } 3077 3078 /* 3079 * Set interrupt model. 3080 */ 3081 ACPI_STATUS 3082 acpi_SetIntrModel(int model) 3083 { 3084 3085 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model)); 3086 } 3087 3088 /* 3089 * Walk subtables of a table and call a callback routine for each 3090 * subtable. The caller should provide the first subtable and a 3091 * pointer to the end of the table. This can be used to walk tables 3092 * such as MADT and SRAT that use subtable entries. 3093 */ 3094 void 3095 acpi_walk_subtables(void *first, void *end, acpi_subtable_handler *handler, 3096 void *arg) 3097 { 3098 ACPI_SUBTABLE_HEADER *entry; 3099 3100 for (entry = first; (void *)entry < end; ) { 3101 /* Avoid an infinite loop if we hit a bogus entry. */ 3102 if (entry->Length < sizeof(ACPI_SUBTABLE_HEADER)) 3103 return; 3104 3105 handler(entry, arg); 3106 entry = ACPI_ADD_PTR(ACPI_SUBTABLE_HEADER, entry, entry->Length); 3107 } 3108 } 3109 3110 /* 3111 * DEPRECATED. This interface has serious deficiencies and will be 3112 * removed. 3113 * 3114 * Immediately enter the sleep state. In the old model, acpiconf(8) ran 3115 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this. 3116 */ 3117 ACPI_STATUS 3118 acpi_SetSleepState(struct acpi_softc *sc, int state) 3119 { 3120 static int once; 3121 3122 if (!once) { 3123 device_printf(sc->acpi_dev, 3124 "warning: acpi_SetSleepState() deprecated, need to update your software\n"); 3125 once = 1; 3126 } 3127 return (acpi_EnterSleepState(sc, state)); 3128 } 3129 3130 #if defined(__amd64__) || defined(__i386__) 3131 static void 3132 acpi_sleep_force_task(void *context) 3133 { 3134 struct acpi_softc *sc = (struct acpi_softc *)context; 3135 3136 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) 3137 device_printf(sc->acpi_dev, "force sleep state S%d failed\n", 3138 sc->acpi_next_sstate); 3139 } 3140 3141 static void 3142 acpi_sleep_force(void *arg) 3143 { 3144 struct acpi_softc *sc = (struct acpi_softc *)arg; 3145 3146 device_printf(sc->acpi_dev, 3147 "suspend request timed out, forcing sleep now\n"); 3148 /* 3149 * XXX Suspending from callout causes freezes in DEVICE_SUSPEND(). 3150 * Suspend from acpi_task thread instead. 3151 */ 3152 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3153 acpi_sleep_force_task, sc))) 3154 device_printf(sc->acpi_dev, "AcpiOsExecute() for sleeping failed\n"); 3155 } 3156 #endif 3157 3158 /* 3159 * Request that the system enter the given suspend state. All /dev/apm 3160 * devices and devd(8) will be notified. Userland then has a chance to 3161 * save state and acknowledge the request. The system sleeps once all 3162 * acks are in. 3163 */ 3164 int 3165 acpi_ReqSleepState(struct acpi_softc *sc, int state) 3166 { 3167 #if defined(__amd64__) || defined(__i386__) 3168 struct apm_clone_data *clone; 3169 ACPI_STATUS status; 3170 3171 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX) 3172 return (EINVAL); 3173 if (!acpi_sleep_states[state]) 3174 return (EOPNOTSUPP); 3175 3176 /* 3177 * If a reboot/shutdown/suspend request is already in progress or 3178 * suspend is blocked due to an upcoming shutdown, just return. 3179 */ 3180 if (rebooting || sc->acpi_next_sstate != 0 || suspend_blocked) { 3181 return (0); 3182 } 3183 3184 /* Wait until sleep is enabled. */ 3185 while (sc->acpi_sleep_disabled) { 3186 AcpiOsSleep(1000); 3187 } 3188 3189 ACPI_LOCK(acpi); 3190 3191 sc->acpi_next_sstate = state; 3192 3193 /* S5 (soft-off) should be entered directly with no waiting. */ 3194 if (state == ACPI_STATE_S5) { 3195 ACPI_UNLOCK(acpi); 3196 status = acpi_EnterSleepState(sc, state); 3197 return (ACPI_SUCCESS(status) ? 0 : ENXIO); 3198 } 3199 3200 /* Record the pending state and notify all apm devices. */ 3201 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) { 3202 clone->notify_status = APM_EV_NONE; 3203 if ((clone->flags & ACPI_EVF_DEVD) == 0) { 3204 selwakeuppri(&clone->sel_read, PZERO); 3205 KNOTE_LOCKED(&clone->sel_read.si_note, 0); 3206 } 3207 } 3208 3209 /* If devd(8) is not running, immediately enter the sleep state. */ 3210 if (!devctl_process_running()) { 3211 ACPI_UNLOCK(acpi); 3212 status = acpi_EnterSleepState(sc, state); 3213 return (ACPI_SUCCESS(status) ? 0 : ENXIO); 3214 } 3215 3216 /* 3217 * Set a timeout to fire if userland doesn't ack the suspend request 3218 * in time. This way we still eventually go to sleep if we were 3219 * overheating or running low on battery, even if userland is hung. 3220 * We cancel this timeout once all userland acks are in or the 3221 * suspend request is aborted. 3222 */ 3223 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc); 3224 ACPI_UNLOCK(acpi); 3225 3226 /* Now notify devd(8) also. */ 3227 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state); 3228 3229 return (0); 3230 #else 3231 /* This platform does not support acpi suspend/resume. */ 3232 return (EOPNOTSUPP); 3233 #endif 3234 } 3235 3236 /* 3237 * Acknowledge (or reject) a pending sleep state. The caller has 3238 * prepared for suspend and is now ready for it to proceed. If the 3239 * error argument is non-zero, it indicates suspend should be cancelled 3240 * and gives an errno value describing why. Once all votes are in, 3241 * we suspend the system. 3242 */ 3243 int 3244 acpi_AckSleepState(struct apm_clone_data *clone, int error) 3245 { 3246 #if defined(__amd64__) || defined(__i386__) 3247 struct acpi_softc *sc; 3248 int ret, sleeping; 3249 3250 /* If no pending sleep state, return an error. */ 3251 ACPI_LOCK(acpi); 3252 sc = clone->acpi_sc; 3253 if (sc->acpi_next_sstate == 0) { 3254 ACPI_UNLOCK(acpi); 3255 return (ENXIO); 3256 } 3257 3258 /* Caller wants to abort suspend process. */ 3259 if (error) { 3260 sc->acpi_next_sstate = 0; 3261 callout_stop(&sc->susp_force_to); 3262 device_printf(sc->acpi_dev, 3263 "listener on %s cancelled the pending suspend\n", 3264 devtoname(clone->cdev)); 3265 ACPI_UNLOCK(acpi); 3266 return (0); 3267 } 3268 3269 /* 3270 * Mark this device as acking the suspend request. Then, walk through 3271 * all devices, seeing if they agree yet. We only count devices that 3272 * are writable since read-only devices couldn't ack the request. 3273 */ 3274 sleeping = TRUE; 3275 clone->notify_status = APM_EV_ACKED; 3276 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) { 3277 if ((clone->flags & ACPI_EVF_WRITE) != 0 && 3278 clone->notify_status != APM_EV_ACKED) { 3279 sleeping = FALSE; 3280 break; 3281 } 3282 } 3283 3284 /* If all devices have voted "yes", we will suspend now. */ 3285 if (sleeping) 3286 callout_stop(&sc->susp_force_to); 3287 ACPI_UNLOCK(acpi); 3288 ret = 0; 3289 if (sleeping) { 3290 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) 3291 ret = ENODEV; 3292 } 3293 return (ret); 3294 #else 3295 /* This platform does not support acpi suspend/resume. */ 3296 return (EOPNOTSUPP); 3297 #endif 3298 } 3299 3300 static void 3301 acpi_sleep_enable(void *arg) 3302 { 3303 struct acpi_softc *sc = (struct acpi_softc *)arg; 3304 3305 ACPI_LOCK_ASSERT(acpi); 3306 3307 /* Reschedule if the system is not fully up and running. */ 3308 if (!AcpiGbl_SystemAwakeAndRunning) { 3309 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME); 3310 return; 3311 } 3312 3313 sc->acpi_sleep_disabled = FALSE; 3314 } 3315 3316 static ACPI_STATUS 3317 acpi_sleep_disable(struct acpi_softc *sc) 3318 { 3319 ACPI_STATUS status; 3320 3321 /* Fail if the system is not fully up and running. */ 3322 if (!AcpiGbl_SystemAwakeAndRunning) 3323 return (AE_ERROR); 3324 3325 ACPI_LOCK(acpi); 3326 status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK; 3327 sc->acpi_sleep_disabled = TRUE; 3328 ACPI_UNLOCK(acpi); 3329 3330 return (status); 3331 } 3332 3333 enum acpi_sleep_state { 3334 ACPI_SS_NONE, 3335 ACPI_SS_GPE_SET, 3336 ACPI_SS_DEV_SUSPEND, 3337 ACPI_SS_SLP_PREP, 3338 ACPI_SS_SLEPT, 3339 }; 3340 3341 /* 3342 * Enter the desired system sleep state. 3343 * 3344 * Currently we support S1-S5 but S4 is only S4BIOS 3345 */ 3346 static ACPI_STATUS 3347 acpi_EnterSleepState(struct acpi_softc *sc, int state) 3348 { 3349 register_t intr; 3350 ACPI_STATUS status; 3351 ACPI_EVENT_STATUS power_button_status; 3352 enum acpi_sleep_state slp_state; 3353 int sleep_result; 3354 3355 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 3356 3357 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX) 3358 return_ACPI_STATUS (AE_BAD_PARAMETER); 3359 if (!acpi_sleep_states[state]) { 3360 device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n", 3361 state); 3362 return (AE_SUPPORT); 3363 } 3364 3365 /* Re-entry once we're suspending is not allowed. */ 3366 status = acpi_sleep_disable(sc); 3367 if (ACPI_FAILURE(status)) { 3368 device_printf(sc->acpi_dev, 3369 "suspend request ignored (not ready yet)\n"); 3370 return (status); 3371 } 3372 3373 if (state == ACPI_STATE_S5) { 3374 /* 3375 * Shut down cleanly and power off. This will call us back through the 3376 * shutdown handlers. 3377 */ 3378 shutdown_nice(RB_POWEROFF); 3379 return_ACPI_STATUS (AE_OK); 3380 } 3381 3382 EVENTHANDLER_INVOKE(power_suspend_early); 3383 stop_all_proc(); 3384 suspend_all_fs(); 3385 EVENTHANDLER_INVOKE(power_suspend); 3386 3387 #ifdef EARLY_AP_STARTUP 3388 MPASS(mp_ncpus == 1 || smp_started); 3389 thread_lock(curthread); 3390 sched_bind(curthread, 0); 3391 thread_unlock(curthread); 3392 #else 3393 if (smp_started) { 3394 thread_lock(curthread); 3395 sched_bind(curthread, 0); 3396 thread_unlock(curthread); 3397 } 3398 #endif 3399 3400 /* 3401 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME 3402 */ 3403 bus_topo_lock(); 3404 3405 slp_state = ACPI_SS_NONE; 3406 3407 sc->acpi_sstate = state; 3408 3409 /* Enable any GPEs as appropriate and requested by the user. */ 3410 acpi_wake_prep_walk(state); 3411 slp_state = ACPI_SS_GPE_SET; 3412 3413 /* 3414 * Inform all devices that we are going to sleep. If at least one 3415 * device fails, DEVICE_SUSPEND() automatically resumes the tree. 3416 * 3417 * XXX Note that a better two-pass approach with a 'veto' pass 3418 * followed by a "real thing" pass would be better, but the current 3419 * bus interface does not provide for this. 3420 */ 3421 if (DEVICE_SUSPEND(root_bus) != 0) { 3422 device_printf(sc->acpi_dev, "device_suspend failed\n"); 3423 goto backout; 3424 } 3425 slp_state = ACPI_SS_DEV_SUSPEND; 3426 3427 status = AcpiEnterSleepStatePrep(state); 3428 if (ACPI_FAILURE(status)) { 3429 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 3430 AcpiFormatException(status)); 3431 goto backout; 3432 } 3433 slp_state = ACPI_SS_SLP_PREP; 3434 3435 if (sc->acpi_sleep_delay > 0) 3436 DELAY(sc->acpi_sleep_delay * 1000000); 3437 3438 suspendclock(); 3439 intr = intr_disable(); 3440 if (state != ACPI_STATE_S1) { 3441 sleep_result = acpi_sleep_machdep(sc, state); 3442 acpi_wakeup_machdep(sc, state, sleep_result, 0); 3443 3444 /* 3445 * XXX According to ACPI specification SCI_EN bit should be restored 3446 * by ACPI platform (BIOS, firmware) to its pre-sleep state. 3447 * Unfortunately some BIOSes fail to do that and that leads to 3448 * unexpected and serious consequences during wake up like a system 3449 * getting stuck in SMI handlers. 3450 * This hack is picked up from Linux, which claims that it follows 3451 * Windows behavior. 3452 */ 3453 if (sleep_result == 1 && state != ACPI_STATE_S4) 3454 AcpiWriteBitRegister(ACPI_BITREG_SCI_ENABLE, ACPI_ENABLE_EVENT); 3455 3456 if (sleep_result == 1 && state == ACPI_STATE_S3) { 3457 /* 3458 * Prevent mis-interpretation of the wakeup by power button 3459 * as a request for power off. 3460 * Ideally we should post an appropriate wakeup event, 3461 * perhaps using acpi_event_power_button_wake or alike. 3462 * 3463 * Clearing of power button status after wakeup is mandated 3464 * by ACPI specification in section "Fixed Power Button". 3465 * 3466 * XXX As of ACPICA 20121114 AcpiGetEventStatus provides 3467 * status as 0/1 corressponding to inactive/active despite 3468 * its type being ACPI_EVENT_STATUS. In other words, 3469 * we should not test for ACPI_EVENT_FLAG_SET for time being. 3470 */ 3471 if (ACPI_SUCCESS(AcpiGetEventStatus(ACPI_EVENT_POWER_BUTTON, 3472 &power_button_status)) && power_button_status != 0) { 3473 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 3474 device_printf(sc->acpi_dev, 3475 "cleared fixed power button status\n"); 3476 } 3477 } 3478 3479 intr_restore(intr); 3480 3481 /* call acpi_wakeup_machdep() again with interrupt enabled */ 3482 acpi_wakeup_machdep(sc, state, sleep_result, 1); 3483 3484 AcpiLeaveSleepStatePrep(state); 3485 3486 if (sleep_result == -1) 3487 goto backout; 3488 3489 /* Re-enable ACPI hardware on wakeup from sleep state 4. */ 3490 if (state == ACPI_STATE_S4) 3491 AcpiEnable(); 3492 } else { 3493 status = AcpiEnterSleepState(state); 3494 intr_restore(intr); 3495 AcpiLeaveSleepStatePrep(state); 3496 if (ACPI_FAILURE(status)) { 3497 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", 3498 AcpiFormatException(status)); 3499 goto backout; 3500 } 3501 } 3502 slp_state = ACPI_SS_SLEPT; 3503 3504 /* 3505 * Back out state according to how far along we got in the suspend 3506 * process. This handles both the error and success cases. 3507 */ 3508 backout: 3509 if (slp_state >= ACPI_SS_SLP_PREP) 3510 resumeclock(); 3511 if (slp_state >= ACPI_SS_GPE_SET) { 3512 acpi_wake_prep_walk(state); 3513 sc->acpi_sstate = ACPI_STATE_S0; 3514 } 3515 if (slp_state >= ACPI_SS_DEV_SUSPEND) 3516 DEVICE_RESUME(root_bus); 3517 if (slp_state >= ACPI_SS_SLP_PREP) 3518 AcpiLeaveSleepState(state); 3519 if (slp_state >= ACPI_SS_SLEPT) { 3520 #if defined(__i386__) || defined(__amd64__) 3521 /* NB: we are still using ACPI timecounter at this point. */ 3522 resume_TSC(); 3523 #endif 3524 acpi_resync_clock(sc); 3525 acpi_enable_fixed_events(sc); 3526 } 3527 sc->acpi_next_sstate = 0; 3528 3529 bus_topo_unlock(); 3530 3531 #ifdef EARLY_AP_STARTUP 3532 thread_lock(curthread); 3533 sched_unbind(curthread); 3534 thread_unlock(curthread); 3535 #else 3536 if (smp_started) { 3537 thread_lock(curthread); 3538 sched_unbind(curthread); 3539 thread_unlock(curthread); 3540 } 3541 #endif 3542 3543 resume_all_fs(); 3544 resume_all_proc(); 3545 3546 EVENTHANDLER_INVOKE(power_resume); 3547 3548 /* Allow another sleep request after a while. */ 3549 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME); 3550 3551 /* Run /etc/rc.resume after we are back. */ 3552 if (devctl_process_running()) 3553 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state); 3554 3555 return_ACPI_STATUS (status); 3556 } 3557 3558 static void 3559 acpi_resync_clock(struct acpi_softc *sc) 3560 { 3561 3562 /* 3563 * Warm up timecounter again and reset system clock. 3564 */ 3565 (void)timecounter->tc_get_timecount(timecounter); 3566 inittodr(time_second + sc->acpi_sleep_delay); 3567 } 3568 3569 /* Enable or disable the device's wake GPE. */ 3570 int 3571 acpi_wake_set_enable(device_t dev, int enable) 3572 { 3573 struct acpi_prw_data prw; 3574 ACPI_STATUS status; 3575 int flags; 3576 3577 /* Make sure the device supports waking the system and get the GPE. */ 3578 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0) 3579 return (ENXIO); 3580 3581 flags = acpi_get_flags(dev); 3582 if (enable) { 3583 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, 3584 ACPI_GPE_ENABLE); 3585 if (ACPI_FAILURE(status)) { 3586 device_printf(dev, "enable wake failed\n"); 3587 return (ENXIO); 3588 } 3589 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED); 3590 } else { 3591 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, 3592 ACPI_GPE_DISABLE); 3593 if (ACPI_FAILURE(status)) { 3594 device_printf(dev, "disable wake failed\n"); 3595 return (ENXIO); 3596 } 3597 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED); 3598 } 3599 3600 return (0); 3601 } 3602 3603 static int 3604 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate) 3605 { 3606 struct acpi_prw_data prw; 3607 device_t dev; 3608 3609 /* Check that this is a wake-capable device and get its GPE. */ 3610 if (acpi_parse_prw(handle, &prw) != 0) 3611 return (ENXIO); 3612 dev = acpi_get_device(handle); 3613 3614 /* 3615 * The destination sleep state must be less than (i.e., higher power) 3616 * or equal to the value specified by _PRW. If this GPE cannot be 3617 * enabled for the next sleep state, then disable it. If it can and 3618 * the user requested it be enabled, turn on any required power resources 3619 * and set _PSW. 3620 */ 3621 if (sstate > prw.lowest_wake) { 3622 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE); 3623 if (bootverbose) 3624 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n", 3625 acpi_name(handle), sstate); 3626 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) { 3627 acpi_pwr_wake_enable(handle, 1); 3628 acpi_SetInteger(handle, "_PSW", 1); 3629 if (bootverbose) 3630 device_printf(dev, "wake_prep enabled for %s (S%d)\n", 3631 acpi_name(handle), sstate); 3632 } 3633 3634 return (0); 3635 } 3636 3637 static int 3638 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate) 3639 { 3640 struct acpi_prw_data prw; 3641 device_t dev; 3642 3643 /* 3644 * Check that this is a wake-capable device and get its GPE. Return 3645 * now if the user didn't enable this device for wake. 3646 */ 3647 if (acpi_parse_prw(handle, &prw) != 0) 3648 return (ENXIO); 3649 dev = acpi_get_device(handle); 3650 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0) 3651 return (0); 3652 3653 /* 3654 * If this GPE couldn't be enabled for the previous sleep state, it was 3655 * disabled before going to sleep so re-enable it. If it was enabled, 3656 * clear _PSW and turn off any power resources it used. 3657 */ 3658 if (sstate > prw.lowest_wake) { 3659 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE); 3660 if (bootverbose) 3661 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle)); 3662 } else { 3663 acpi_SetInteger(handle, "_PSW", 0); 3664 acpi_pwr_wake_enable(handle, 0); 3665 if (bootverbose) 3666 device_printf(dev, "run_prep cleaned up for %s\n", 3667 acpi_name(handle)); 3668 } 3669 3670 return (0); 3671 } 3672 3673 static ACPI_STATUS 3674 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 3675 { 3676 int sstate; 3677 3678 /* If suspending, run the sleep prep function, otherwise wake. */ 3679 sstate = *(int *)context; 3680 if (AcpiGbl_SystemAwakeAndRunning) 3681 acpi_wake_sleep_prep(handle, sstate); 3682 else 3683 acpi_wake_run_prep(handle, sstate); 3684 return (AE_OK); 3685 } 3686 3687 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */ 3688 static int 3689 acpi_wake_prep_walk(int sstate) 3690 { 3691 ACPI_HANDLE sb_handle; 3692 3693 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) 3694 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100, 3695 acpi_wake_prep, NULL, &sstate, NULL); 3696 return (0); 3697 } 3698 3699 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */ 3700 static int 3701 acpi_wake_sysctl_walk(device_t dev) 3702 { 3703 int error, i, numdevs; 3704 device_t *devlist; 3705 device_t child; 3706 ACPI_STATUS status; 3707 3708 error = device_get_children(dev, &devlist, &numdevs); 3709 if (error != 0 || numdevs == 0) { 3710 if (numdevs == 0) 3711 free(devlist, M_TEMP); 3712 return (error); 3713 } 3714 for (i = 0; i < numdevs; i++) { 3715 child = devlist[i]; 3716 acpi_wake_sysctl_walk(child); 3717 if (!device_is_attached(child)) 3718 continue; 3719 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL); 3720 if (ACPI_SUCCESS(status)) { 3721 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child), 3722 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO, 3723 "wake", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, child, 0, 3724 acpi_wake_set_sysctl, "I", "Device set to wake the system"); 3725 } 3726 } 3727 free(devlist, M_TEMP); 3728 3729 return (0); 3730 } 3731 3732 /* Enable or disable wake from userland. */ 3733 static int 3734 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS) 3735 { 3736 int enable, error; 3737 device_t dev; 3738 3739 dev = (device_t)arg1; 3740 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0; 3741 3742 error = sysctl_handle_int(oidp, &enable, 0, req); 3743 if (error != 0 || req->newptr == NULL) 3744 return (error); 3745 if (enable != 0 && enable != 1) 3746 return (EINVAL); 3747 3748 return (acpi_wake_set_enable(dev, enable)); 3749 } 3750 3751 /* Parse a device's _PRW into a structure. */ 3752 int 3753 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw) 3754 { 3755 ACPI_STATUS status; 3756 ACPI_BUFFER prw_buffer; 3757 ACPI_OBJECT *res, *res2; 3758 int error, i, power_count; 3759 3760 if (h == NULL || prw == NULL) 3761 return (EINVAL); 3762 3763 /* 3764 * The _PRW object (7.2.9) is only required for devices that have the 3765 * ability to wake the system from a sleeping state. 3766 */ 3767 error = EINVAL; 3768 prw_buffer.Pointer = NULL; 3769 prw_buffer.Length = ACPI_ALLOCATE_BUFFER; 3770 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer); 3771 if (ACPI_FAILURE(status)) 3772 return (ENOENT); 3773 res = (ACPI_OBJECT *)prw_buffer.Pointer; 3774 if (res == NULL) 3775 return (ENOENT); 3776 if (!ACPI_PKG_VALID(res, 2)) 3777 goto out; 3778 3779 /* 3780 * Element 1 of the _PRW object: 3781 * The lowest power system sleeping state that can be entered while still 3782 * providing wake functionality. The sleeping state being entered must 3783 * be less than (i.e., higher power) or equal to this value. 3784 */ 3785 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0) 3786 goto out; 3787 3788 /* 3789 * Element 0 of the _PRW object: 3790 */ 3791 switch (res->Package.Elements[0].Type) { 3792 case ACPI_TYPE_INTEGER: 3793 /* 3794 * If the data type of this package element is numeric, then this 3795 * _PRW package element is the bit index in the GPEx_EN, in the 3796 * GPE blocks described in the FADT, of the enable bit that is 3797 * enabled for the wake event. 3798 */ 3799 prw->gpe_handle = NULL; 3800 prw->gpe_bit = res->Package.Elements[0].Integer.Value; 3801 error = 0; 3802 break; 3803 case ACPI_TYPE_PACKAGE: 3804 /* 3805 * If the data type of this package element is a package, then this 3806 * _PRW package element is itself a package containing two 3807 * elements. The first is an object reference to the GPE Block 3808 * device that contains the GPE that will be triggered by the wake 3809 * event. The second element is numeric and it contains the bit 3810 * index in the GPEx_EN, in the GPE Block referenced by the 3811 * first element in the package, of the enable bit that is enabled for 3812 * the wake event. 3813 * 3814 * For example, if this field is a package then it is of the form: 3815 * Package() {\_SB.PCI0.ISA.GPE, 2} 3816 */ 3817 res2 = &res->Package.Elements[0]; 3818 if (!ACPI_PKG_VALID(res2, 2)) 3819 goto out; 3820 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]); 3821 if (prw->gpe_handle == NULL) 3822 goto out; 3823 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0) 3824 goto out; 3825 error = 0; 3826 break; 3827 default: 3828 goto out; 3829 } 3830 3831 /* Elements 2 to N of the _PRW object are power resources. */ 3832 power_count = res->Package.Count - 2; 3833 if (power_count > ACPI_PRW_MAX_POWERRES) { 3834 printf("ACPI device %s has too many power resources\n", acpi_name(h)); 3835 power_count = 0; 3836 } 3837 prw->power_res_count = power_count; 3838 for (i = 0; i < power_count; i++) 3839 prw->power_res[i] = res->Package.Elements[i]; 3840 3841 out: 3842 if (prw_buffer.Pointer != NULL) 3843 AcpiOsFree(prw_buffer.Pointer); 3844 return (error); 3845 } 3846 3847 /* 3848 * ACPI Event Handlers 3849 */ 3850 3851 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */ 3852 3853 static void 3854 acpi_system_eventhandler_sleep(void *arg, int state) 3855 { 3856 struct acpi_softc *sc = (struct acpi_softc *)arg; 3857 int ret; 3858 3859 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 3860 3861 /* Check if button action is disabled or unknown. */ 3862 if (state == ACPI_STATE_UNKNOWN) 3863 return; 3864 3865 /* Request that the system prepare to enter the given suspend state. */ 3866 ret = acpi_ReqSleepState(sc, state); 3867 if (ret != 0) 3868 device_printf(sc->acpi_dev, 3869 "request to enter state S%d failed (err %d)\n", state, ret); 3870 3871 return_VOID; 3872 } 3873 3874 static void 3875 acpi_system_eventhandler_wakeup(void *arg, int state) 3876 { 3877 3878 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 3879 3880 /* Currently, nothing to do for wakeup. */ 3881 3882 return_VOID; 3883 } 3884 3885 /* 3886 * ACPICA Event Handlers (FixedEvent, also called from button notify handler) 3887 */ 3888 static void 3889 acpi_invoke_sleep_eventhandler(void *context) 3890 { 3891 3892 EVENTHANDLER_INVOKE(acpi_sleep_event, *(int *)context); 3893 } 3894 3895 static void 3896 acpi_invoke_wake_eventhandler(void *context) 3897 { 3898 3899 EVENTHANDLER_INVOKE(acpi_wakeup_event, *(int *)context); 3900 } 3901 3902 UINT32 3903 acpi_event_power_button_sleep(void *context) 3904 { 3905 #if defined(__amd64__) || defined(__i386__) 3906 struct acpi_softc *sc = (struct acpi_softc *)context; 3907 #else 3908 (void)context; 3909 #endif 3910 3911 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3912 3913 #if defined(__amd64__) || defined(__i386__) 3914 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3915 acpi_invoke_sleep_eventhandler, &sc->acpi_power_button_sx))) 3916 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3917 #else 3918 shutdown_nice(RB_POWEROFF); 3919 #endif 3920 3921 return_VALUE (ACPI_INTERRUPT_HANDLED); 3922 } 3923 3924 UINT32 3925 acpi_event_power_button_wake(void *context) 3926 { 3927 struct acpi_softc *sc = (struct acpi_softc *)context; 3928 3929 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3930 3931 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3932 acpi_invoke_wake_eventhandler, &sc->acpi_power_button_sx))) 3933 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3934 return_VALUE (ACPI_INTERRUPT_HANDLED); 3935 } 3936 3937 UINT32 3938 acpi_event_sleep_button_sleep(void *context) 3939 { 3940 struct acpi_softc *sc = (struct acpi_softc *)context; 3941 3942 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3943 3944 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3945 acpi_invoke_sleep_eventhandler, &sc->acpi_sleep_button_sx))) 3946 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3947 return_VALUE (ACPI_INTERRUPT_HANDLED); 3948 } 3949 3950 UINT32 3951 acpi_event_sleep_button_wake(void *context) 3952 { 3953 struct acpi_softc *sc = (struct acpi_softc *)context; 3954 3955 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3956 3957 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3958 acpi_invoke_wake_eventhandler, &sc->acpi_sleep_button_sx))) 3959 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3960 return_VALUE (ACPI_INTERRUPT_HANDLED); 3961 } 3962 3963 /* 3964 * XXX This static buffer is suboptimal. There is no locking so only 3965 * use this for single-threaded callers. 3966 */ 3967 char * 3968 acpi_name(ACPI_HANDLE handle) 3969 { 3970 ACPI_BUFFER buf; 3971 static char data[256]; 3972 3973 buf.Length = sizeof(data); 3974 buf.Pointer = data; 3975 3976 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf))) 3977 return (data); 3978 return ("(unknown)"); 3979 } 3980 3981 /* 3982 * Debugging/bug-avoidance. Avoid trying to fetch info on various 3983 * parts of the namespace. 3984 */ 3985 int 3986 acpi_avoid(ACPI_HANDLE handle) 3987 { 3988 char *cp, *env, *np; 3989 int len; 3990 3991 np = acpi_name(handle); 3992 if (*np == '\\') 3993 np++; 3994 if ((env = kern_getenv("debug.acpi.avoid")) == NULL) 3995 return (0); 3996 3997 /* Scan the avoid list checking for a match */ 3998 cp = env; 3999 for (;;) { 4000 while (*cp != 0 && isspace(*cp)) 4001 cp++; 4002 if (*cp == 0) 4003 break; 4004 len = 0; 4005 while (cp[len] != 0 && !isspace(cp[len])) 4006 len++; 4007 if (!strncmp(cp, np, len)) { 4008 freeenv(env); 4009 return(1); 4010 } 4011 cp += len; 4012 } 4013 freeenv(env); 4014 4015 return (0); 4016 } 4017 4018 /* 4019 * Debugging/bug-avoidance. Disable ACPI subsystem components. 4020 */ 4021 int 4022 acpi_disabled(char *subsys) 4023 { 4024 char *cp, *env; 4025 int len; 4026 4027 if ((env = kern_getenv("debug.acpi.disabled")) == NULL) 4028 return (0); 4029 if (strcmp(env, "all") == 0) { 4030 freeenv(env); 4031 return (1); 4032 } 4033 4034 /* Scan the disable list, checking for a match. */ 4035 cp = env; 4036 for (;;) { 4037 while (*cp != '\0' && isspace(*cp)) 4038 cp++; 4039 if (*cp == '\0') 4040 break; 4041 len = 0; 4042 while (cp[len] != '\0' && !isspace(cp[len])) 4043 len++; 4044 if (strncmp(cp, subsys, len) == 0) { 4045 freeenv(env); 4046 return (1); 4047 } 4048 cp += len; 4049 } 4050 freeenv(env); 4051 4052 return (0); 4053 } 4054 4055 static void 4056 acpi_lookup(void *arg, const char *name, device_t *dev) 4057 { 4058 ACPI_HANDLE handle; 4059 4060 if (*dev != NULL) 4061 return; 4062 4063 /* 4064 * Allow any handle name that is specified as an absolute path and 4065 * starts with '\'. We could restrict this to \_SB and friends, 4066 * but see acpi_probe_children() for notes on why we scan the entire 4067 * namespace for devices. 4068 * 4069 * XXX: The pathname argument to AcpiGetHandle() should be fixed to 4070 * be const. 4071 */ 4072 if (name[0] != '\\') 4073 return; 4074 if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, __DECONST(char *, name), 4075 &handle))) 4076 return; 4077 *dev = acpi_get_device(handle); 4078 } 4079 4080 /* 4081 * Control interface. 4082 * 4083 * We multiplex ioctls for all participating ACPI devices here. Individual 4084 * drivers wanting to be accessible via /dev/acpi should use the 4085 * register/deregister interface to make their handlers visible. 4086 */ 4087 struct acpi_ioctl_hook 4088 { 4089 TAILQ_ENTRY(acpi_ioctl_hook) link; 4090 u_long cmd; 4091 acpi_ioctl_fn fn; 4092 void *arg; 4093 }; 4094 4095 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks; 4096 static int acpi_ioctl_hooks_initted; 4097 4098 int 4099 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg) 4100 { 4101 struct acpi_ioctl_hook *hp; 4102 4103 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL) 4104 return (ENOMEM); 4105 hp->cmd = cmd; 4106 hp->fn = fn; 4107 hp->arg = arg; 4108 4109 ACPI_LOCK(acpi); 4110 if (acpi_ioctl_hooks_initted == 0) { 4111 TAILQ_INIT(&acpi_ioctl_hooks); 4112 acpi_ioctl_hooks_initted = 1; 4113 } 4114 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link); 4115 ACPI_UNLOCK(acpi); 4116 4117 return (0); 4118 } 4119 4120 void 4121 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn) 4122 { 4123 struct acpi_ioctl_hook *hp; 4124 4125 ACPI_LOCK(acpi); 4126 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) 4127 if (hp->cmd == cmd && hp->fn == fn) 4128 break; 4129 4130 if (hp != NULL) { 4131 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link); 4132 free(hp, M_ACPIDEV); 4133 } 4134 ACPI_UNLOCK(acpi); 4135 } 4136 4137 static int 4138 acpiopen(struct cdev *dev, int flag, int fmt, struct thread *td) 4139 { 4140 return (0); 4141 } 4142 4143 static int 4144 acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td) 4145 { 4146 return (0); 4147 } 4148 4149 static int 4150 acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 4151 { 4152 struct acpi_softc *sc; 4153 struct acpi_ioctl_hook *hp; 4154 int error, state; 4155 4156 error = 0; 4157 hp = NULL; 4158 sc = dev->si_drv1; 4159 4160 /* 4161 * Scan the list of registered ioctls, looking for handlers. 4162 */ 4163 ACPI_LOCK(acpi); 4164 if (acpi_ioctl_hooks_initted) 4165 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) { 4166 if (hp->cmd == cmd) 4167 break; 4168 } 4169 ACPI_UNLOCK(acpi); 4170 if (hp) 4171 return (hp->fn(cmd, addr, hp->arg)); 4172 4173 /* 4174 * Core ioctls are not permitted for non-writable user. 4175 * Currently, other ioctls just fetch information. 4176 * Not changing system behavior. 4177 */ 4178 if ((flag & FWRITE) == 0) 4179 return (EPERM); 4180 4181 /* Core system ioctls. */ 4182 switch (cmd) { 4183 case ACPIIO_REQSLPSTATE: 4184 state = *(int *)addr; 4185 if (state != ACPI_STATE_S5) 4186 return (acpi_ReqSleepState(sc, state)); 4187 device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n"); 4188 error = EOPNOTSUPP; 4189 break; 4190 case ACPIIO_ACKSLPSTATE: 4191 error = *(int *)addr; 4192 error = acpi_AckSleepState(sc->acpi_clone, error); 4193 break; 4194 case ACPIIO_SETSLPSTATE: /* DEPRECATED */ 4195 state = *(int *)addr; 4196 if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX) 4197 return (EINVAL); 4198 if (!acpi_sleep_states[state]) 4199 return (EOPNOTSUPP); 4200 if (ACPI_FAILURE(acpi_SetSleepState(sc, state))) 4201 error = ENXIO; 4202 break; 4203 default: 4204 error = ENXIO; 4205 break; 4206 } 4207 4208 return (error); 4209 } 4210 4211 static int 4212 acpi_sname2sstate(const char *sname) 4213 { 4214 int sstate; 4215 4216 if (toupper(sname[0]) == 'S') { 4217 sstate = sname[1] - '0'; 4218 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 && 4219 sname[2] == '\0') 4220 return (sstate); 4221 } else if (strcasecmp(sname, "NONE") == 0) 4222 return (ACPI_STATE_UNKNOWN); 4223 return (-1); 4224 } 4225 4226 static const char * 4227 acpi_sstate2sname(int sstate) 4228 { 4229 static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" }; 4230 4231 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5) 4232 return (snames[sstate]); 4233 else if (sstate == ACPI_STATE_UNKNOWN) 4234 return ("NONE"); 4235 return (NULL); 4236 } 4237 4238 static int 4239 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 4240 { 4241 int error; 4242 struct sbuf sb; 4243 UINT8 state; 4244 4245 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND); 4246 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++) 4247 if (acpi_sleep_states[state]) 4248 sbuf_printf(&sb, "%s ", acpi_sstate2sname(state)); 4249 sbuf_trim(&sb); 4250 sbuf_finish(&sb); 4251 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req); 4252 sbuf_delete(&sb); 4253 return (error); 4254 } 4255 4256 static int 4257 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 4258 { 4259 char sleep_state[10]; 4260 int error, new_state, old_state; 4261 4262 old_state = *(int *)oidp->oid_arg1; 4263 strlcpy(sleep_state, acpi_sstate2sname(old_state), sizeof(sleep_state)); 4264 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req); 4265 if (error == 0 && req->newptr != NULL) { 4266 new_state = acpi_sname2sstate(sleep_state); 4267 if (new_state < ACPI_STATE_S1) 4268 return (EINVAL); 4269 if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state]) 4270 return (EOPNOTSUPP); 4271 if (new_state != old_state) 4272 *(int *)oidp->oid_arg1 = new_state; 4273 } 4274 return (error); 4275 } 4276 4277 /* Inform devctl(4) when we receive a Notify. */ 4278 void 4279 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify) 4280 { 4281 char notify_buf[16]; 4282 ACPI_BUFFER handle_buf; 4283 ACPI_STATUS status; 4284 4285 if (subsystem == NULL) 4286 return; 4287 4288 handle_buf.Pointer = NULL; 4289 handle_buf.Length = ACPI_ALLOCATE_BUFFER; 4290 status = AcpiNsHandleToPathname(h, &handle_buf, FALSE); 4291 if (ACPI_FAILURE(status)) 4292 return; 4293 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify); 4294 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf); 4295 AcpiOsFree(handle_buf.Pointer); 4296 } 4297 4298 #ifdef ACPI_DEBUG 4299 /* 4300 * Support for parsing debug options from the kernel environment. 4301 * 4302 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers 4303 * by specifying the names of the bits in the debug.acpi.layer and 4304 * debug.acpi.level environment variables. Bits may be unset by 4305 * prefixing the bit name with !. 4306 */ 4307 struct debugtag 4308 { 4309 char *name; 4310 UINT32 value; 4311 }; 4312 4313 static struct debugtag dbg_layer[] = { 4314 {"ACPI_UTILITIES", ACPI_UTILITIES}, 4315 {"ACPI_HARDWARE", ACPI_HARDWARE}, 4316 {"ACPI_EVENTS", ACPI_EVENTS}, 4317 {"ACPI_TABLES", ACPI_TABLES}, 4318 {"ACPI_NAMESPACE", ACPI_NAMESPACE}, 4319 {"ACPI_PARSER", ACPI_PARSER}, 4320 {"ACPI_DISPATCHER", ACPI_DISPATCHER}, 4321 {"ACPI_EXECUTER", ACPI_EXECUTER}, 4322 {"ACPI_RESOURCES", ACPI_RESOURCES}, 4323 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER}, 4324 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES}, 4325 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER}, 4326 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS}, 4327 4328 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER}, 4329 {"ACPI_BATTERY", ACPI_BATTERY}, 4330 {"ACPI_BUS", ACPI_BUS}, 4331 {"ACPI_BUTTON", ACPI_BUTTON}, 4332 {"ACPI_EC", ACPI_EC}, 4333 {"ACPI_FAN", ACPI_FAN}, 4334 {"ACPI_POWERRES", ACPI_POWERRES}, 4335 {"ACPI_PROCESSOR", ACPI_PROCESSOR}, 4336 {"ACPI_THERMAL", ACPI_THERMAL}, 4337 {"ACPI_TIMER", ACPI_TIMER}, 4338 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS}, 4339 {NULL, 0} 4340 }; 4341 4342 static struct debugtag dbg_level[] = { 4343 {"ACPI_LV_INIT", ACPI_LV_INIT}, 4344 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT}, 4345 {"ACPI_LV_INFO", ACPI_LV_INFO}, 4346 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR}, 4347 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS}, 4348 4349 /* Trace verbosity level 1 [Standard Trace Level] */ 4350 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES}, 4351 {"ACPI_LV_PARSE", ACPI_LV_PARSE}, 4352 {"ACPI_LV_LOAD", ACPI_LV_LOAD}, 4353 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH}, 4354 {"ACPI_LV_EXEC", ACPI_LV_EXEC}, 4355 {"ACPI_LV_NAMES", ACPI_LV_NAMES}, 4356 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION}, 4357 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD}, 4358 {"ACPI_LV_TABLES", ACPI_LV_TABLES}, 4359 {"ACPI_LV_VALUES", ACPI_LV_VALUES}, 4360 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS}, 4361 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES}, 4362 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS}, 4363 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE}, 4364 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1}, 4365 4366 /* Trace verbosity level 2 [Function tracing and memory allocation] */ 4367 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS}, 4368 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS}, 4369 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS}, 4370 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2}, 4371 {"ACPI_LV_ALL", ACPI_LV_ALL}, 4372 4373 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */ 4374 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX}, 4375 {"ACPI_LV_THREADS", ACPI_LV_THREADS}, 4376 {"ACPI_LV_IO", ACPI_LV_IO}, 4377 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS}, 4378 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3}, 4379 4380 /* Exceptionally verbose output -- also used in the global "DebugLevel" */ 4381 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE}, 4382 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO}, 4383 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES}, 4384 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS}, 4385 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE}, 4386 {NULL, 0} 4387 }; 4388 4389 static void 4390 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag) 4391 { 4392 char *ep; 4393 int i, l; 4394 int set; 4395 4396 while (*cp) { 4397 if (isspace(*cp)) { 4398 cp++; 4399 continue; 4400 } 4401 ep = cp; 4402 while (*ep && !isspace(*ep)) 4403 ep++; 4404 if (*cp == '!') { 4405 set = 0; 4406 cp++; 4407 if (cp == ep) 4408 continue; 4409 } else { 4410 set = 1; 4411 } 4412 l = ep - cp; 4413 for (i = 0; tag[i].name != NULL; i++) { 4414 if (!strncmp(cp, tag[i].name, l)) { 4415 if (set) 4416 *flag |= tag[i].value; 4417 else 4418 *flag &= ~tag[i].value; 4419 } 4420 } 4421 cp = ep; 4422 } 4423 } 4424 4425 static void 4426 acpi_set_debugging(void *junk) 4427 { 4428 char *layer, *level; 4429 4430 if (cold) { 4431 AcpiDbgLayer = 0; 4432 AcpiDbgLevel = 0; 4433 } 4434 4435 layer = kern_getenv("debug.acpi.layer"); 4436 level = kern_getenv("debug.acpi.level"); 4437 if (layer == NULL && level == NULL) 4438 return; 4439 4440 printf("ACPI set debug"); 4441 if (layer != NULL) { 4442 if (strcmp("NONE", layer) != 0) 4443 printf(" layer '%s'", layer); 4444 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer); 4445 freeenv(layer); 4446 } 4447 if (level != NULL) { 4448 if (strcmp("NONE", level) != 0) 4449 printf(" level '%s'", level); 4450 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel); 4451 freeenv(level); 4452 } 4453 printf("\n"); 4454 } 4455 4456 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging, 4457 NULL); 4458 4459 static int 4460 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS) 4461 { 4462 int error, *dbg; 4463 struct debugtag *tag; 4464 struct sbuf sb; 4465 char temp[128]; 4466 4467 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL) 4468 return (ENOMEM); 4469 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) { 4470 tag = &dbg_layer[0]; 4471 dbg = &AcpiDbgLayer; 4472 } else { 4473 tag = &dbg_level[0]; 4474 dbg = &AcpiDbgLevel; 4475 } 4476 4477 /* Get old values if this is a get request. */ 4478 ACPI_SERIAL_BEGIN(acpi); 4479 if (*dbg == 0) { 4480 sbuf_cpy(&sb, "NONE"); 4481 } else if (req->newptr == NULL) { 4482 for (; tag->name != NULL; tag++) { 4483 if ((*dbg & tag->value) == tag->value) 4484 sbuf_printf(&sb, "%s ", tag->name); 4485 } 4486 } 4487 sbuf_trim(&sb); 4488 sbuf_finish(&sb); 4489 strlcpy(temp, sbuf_data(&sb), sizeof(temp)); 4490 sbuf_delete(&sb); 4491 4492 error = sysctl_handle_string(oidp, temp, sizeof(temp), req); 4493 4494 /* Check for error or no change */ 4495 if (error == 0 && req->newptr != NULL) { 4496 *dbg = 0; 4497 kern_setenv((char *)oidp->oid_arg1, temp); 4498 acpi_set_debugging(NULL); 4499 } 4500 ACPI_SERIAL_END(acpi); 4501 4502 return (error); 4503 } 4504 4505 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, 4506 CTLFLAG_RW | CTLTYPE_STRING | CTLFLAG_MPSAFE, "debug.acpi.layer", 0, 4507 acpi_debug_sysctl, "A", 4508 ""); 4509 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, 4510 CTLFLAG_RW | CTLTYPE_STRING | CTLFLAG_MPSAFE, "debug.acpi.level", 0, 4511 acpi_debug_sysctl, "A", 4512 ""); 4513 #endif /* ACPI_DEBUG */ 4514 4515 static int 4516 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS) 4517 { 4518 int error; 4519 int old; 4520 4521 old = acpi_debug_objects; 4522 error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req); 4523 if (error != 0 || req->newptr == NULL) 4524 return (error); 4525 if (old == acpi_debug_objects || (old && acpi_debug_objects)) 4526 return (0); 4527 4528 ACPI_SERIAL_BEGIN(acpi); 4529 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE; 4530 ACPI_SERIAL_END(acpi); 4531 4532 return (0); 4533 } 4534 4535 static int 4536 acpi_parse_interfaces(char *str, struct acpi_interface *iface) 4537 { 4538 char *p; 4539 size_t len; 4540 int i, j; 4541 4542 p = str; 4543 while (isspace(*p) || *p == ',') 4544 p++; 4545 len = strlen(p); 4546 if (len == 0) 4547 return (0); 4548 p = strdup(p, M_TEMP); 4549 for (i = 0; i < len; i++) 4550 if (p[i] == ',') 4551 p[i] = '\0'; 4552 i = j = 0; 4553 while (i < len) 4554 if (isspace(p[i]) || p[i] == '\0') 4555 i++; 4556 else { 4557 i += strlen(p + i) + 1; 4558 j++; 4559 } 4560 if (j == 0) { 4561 free(p, M_TEMP); 4562 return (0); 4563 } 4564 iface->data = malloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK); 4565 iface->num = j; 4566 i = j = 0; 4567 while (i < len) 4568 if (isspace(p[i]) || p[i] == '\0') 4569 i++; 4570 else { 4571 iface->data[j] = p + i; 4572 i += strlen(p + i) + 1; 4573 j++; 4574 } 4575 4576 return (j); 4577 } 4578 4579 static void 4580 acpi_free_interfaces(struct acpi_interface *iface) 4581 { 4582 4583 free(iface->data[0], M_TEMP); 4584 free(iface->data, M_TEMP); 4585 } 4586 4587 static void 4588 acpi_reset_interfaces(device_t dev) 4589 { 4590 struct acpi_interface list; 4591 ACPI_STATUS status; 4592 int i; 4593 4594 if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) { 4595 for (i = 0; i < list.num; i++) { 4596 status = AcpiInstallInterface(list.data[i]); 4597 if (ACPI_FAILURE(status)) 4598 device_printf(dev, 4599 "failed to install _OSI(\"%s\"): %s\n", 4600 list.data[i], AcpiFormatException(status)); 4601 else if (bootverbose) 4602 device_printf(dev, "installed _OSI(\"%s\")\n", 4603 list.data[i]); 4604 } 4605 acpi_free_interfaces(&list); 4606 } 4607 if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) { 4608 for (i = 0; i < list.num; i++) { 4609 status = AcpiRemoveInterface(list.data[i]); 4610 if (ACPI_FAILURE(status)) 4611 device_printf(dev, 4612 "failed to remove _OSI(\"%s\"): %s\n", 4613 list.data[i], AcpiFormatException(status)); 4614 else if (bootverbose) 4615 device_printf(dev, "removed _OSI(\"%s\")\n", 4616 list.data[i]); 4617 } 4618 acpi_free_interfaces(&list); 4619 } 4620 } 4621 4622 static int 4623 acpi_pm_func(u_long cmd, void *arg, ...) 4624 { 4625 int state, acpi_state; 4626 int error; 4627 struct acpi_softc *sc; 4628 va_list ap; 4629 4630 error = 0; 4631 switch (cmd) { 4632 case POWER_CMD_SUSPEND: 4633 sc = (struct acpi_softc *)arg; 4634 if (sc == NULL) { 4635 error = EINVAL; 4636 goto out; 4637 } 4638 4639 va_start(ap, arg); 4640 state = va_arg(ap, int); 4641 va_end(ap); 4642 4643 switch (state) { 4644 case POWER_SLEEP_STATE_STANDBY: 4645 acpi_state = sc->acpi_standby_sx; 4646 break; 4647 case POWER_SLEEP_STATE_SUSPEND: 4648 acpi_state = sc->acpi_suspend_sx; 4649 break; 4650 case POWER_SLEEP_STATE_HIBERNATE: 4651 acpi_state = ACPI_STATE_S4; 4652 break; 4653 default: 4654 error = EINVAL; 4655 goto out; 4656 } 4657 4658 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state))) 4659 error = ENXIO; 4660 break; 4661 default: 4662 error = EINVAL; 4663 goto out; 4664 } 4665 4666 out: 4667 return (error); 4668 } 4669 4670 static void 4671 acpi_pm_register(void *arg) 4672 { 4673 if (!cold || resource_disabled("acpi", 0)) 4674 return; 4675 4676 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL); 4677 } 4678 4679 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, NULL); 4680