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 __FBSDID("$FreeBSD$"); 32 33 #include "opt_acpi.h" 34 35 #include <sys/param.h> 36 #include <sys/eventhandler.h> 37 #include <sys/kernel.h> 38 #include <sys/proc.h> 39 #include <sys/fcntl.h> 40 #include <sys/malloc.h> 41 #include <sys/module.h> 42 #include <sys/bus.h> 43 #include <sys/conf.h> 44 #include <sys/ioccom.h> 45 #include <sys/reboot.h> 46 #include <sys/sysctl.h> 47 #include <sys/ctype.h> 48 #include <sys/linker.h> 49 #include <sys/mount.h> 50 #include <sys/power.h> 51 #include <sys/sbuf.h> 52 #include <sys/sched.h> 53 #include <sys/smp.h> 54 #include <sys/timetc.h> 55 #include <sys/uuid.h> 56 57 #if defined(__i386__) || defined(__amd64__) 58 #include <machine/clock.h> 59 #include <machine/pci_cfgreg.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 static char *pcilink_ids[] = { "PNP0C0F", NULL }; 103 104 /* Global mutex for locking access to the ACPI subsystem. */ 105 struct mtx acpi_mutex; 106 struct callout acpi_sleep_timer; 107 108 /* Bitmap of device quirks. */ 109 int acpi_quirks; 110 111 /* Supported sleep states. */ 112 static BOOLEAN acpi_sleep_states[ACPI_S_STATE_COUNT]; 113 114 static void acpi_lookup(void *arg, const char *name, device_t *dev); 115 static int acpi_modevent(struct module *mod, int event, void *junk); 116 static int acpi_probe(device_t dev); 117 static int acpi_attach(device_t dev); 118 static int acpi_suspend(device_t dev); 119 static int acpi_resume(device_t dev); 120 static int acpi_shutdown(device_t dev); 121 static device_t acpi_add_child(device_t bus, u_int order, const char *name, 122 int unit); 123 static int acpi_print_child(device_t bus, device_t child); 124 static void acpi_probe_nomatch(device_t bus, device_t child); 125 static void acpi_driver_added(device_t dev, driver_t *driver); 126 static void acpi_child_deleted(device_t dev, device_t child); 127 static int acpi_read_ivar(device_t dev, device_t child, int index, 128 uintptr_t *result); 129 static int acpi_write_ivar(device_t dev, device_t child, int index, 130 uintptr_t value); 131 static struct resource_list *acpi_get_rlist(device_t dev, device_t child); 132 static void acpi_reserve_resources(device_t dev); 133 static int acpi_sysres_alloc(device_t dev); 134 static int acpi_set_resource(device_t dev, device_t child, int type, 135 int rid, rman_res_t start, rman_res_t count); 136 static struct resource *acpi_alloc_resource(device_t bus, device_t child, 137 int type, int *rid, rman_res_t start, rman_res_t end, 138 rman_res_t count, u_int flags); 139 static int acpi_adjust_resource(device_t bus, device_t child, int type, 140 struct resource *r, rman_res_t start, rman_res_t end); 141 static int acpi_release_resource(device_t bus, device_t child, int type, 142 int rid, struct resource *r); 143 static void acpi_delete_resource(device_t bus, device_t child, int type, 144 int rid); 145 static uint32_t acpi_isa_get_logicalid(device_t dev); 146 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count); 147 static ssize_t acpi_bus_get_prop(device_t bus, device_t child, const char *propname, 148 void *propvalue, size_t size, device_property_type_t type); 149 static int acpi_device_id_probe(device_t bus, device_t dev, char **ids, char **match); 150 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev, 151 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters, 152 ACPI_BUFFER *ret); 153 static ACPI_STATUS acpi_device_get_prop(device_t bus, device_t dev, 154 ACPI_STRING propname, const ACPI_OBJECT **value); 155 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, 156 void *context, void **retval); 157 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev, 158 int max_depth, acpi_scan_cb_t user_fn, void *arg); 159 static ACPI_STATUS acpi_find_dsd(struct acpi_device *ad); 160 static int acpi_isa_pnp_probe(device_t bus, device_t child, 161 struct isa_pnp_id *ids); 162 static void acpi_platform_osc(device_t dev); 163 static void acpi_probe_children(device_t bus); 164 static void acpi_probe_order(ACPI_HANDLE handle, int *order); 165 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level, 166 void *context, void **status); 167 static void acpi_sleep_enable(void *arg); 168 static ACPI_STATUS acpi_sleep_disable(struct acpi_softc *sc); 169 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state); 170 static void acpi_shutdown_final(void *arg, int howto); 171 static void acpi_enable_fixed_events(struct acpi_softc *sc); 172 static void acpi_resync_clock(struct acpi_softc *sc); 173 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate); 174 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate); 175 static int acpi_wake_prep_walk(int sstate); 176 static int acpi_wake_sysctl_walk(device_t dev); 177 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS); 178 static void acpi_system_eventhandler_sleep(void *arg, int state); 179 static void acpi_system_eventhandler_wakeup(void *arg, int state); 180 static int acpi_sname2sstate(const char *sname); 181 static const char *acpi_sstate2sname(int sstate); 182 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); 183 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); 184 static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS); 185 static int acpi_pm_func(u_long cmd, void *arg, ...); 186 static int acpi_child_location_method(device_t acdev, device_t child, 187 struct sbuf *sb); 188 static int acpi_child_pnpinfo_method(device_t acdev, device_t child, 189 struct sbuf *sb); 190 static int acpi_get_device_path(device_t bus, device_t child, 191 const char *locator, struct sbuf *sb); 192 static void acpi_enable_pcie(void); 193 static void acpi_hint_device_unit(device_t acdev, device_t child, 194 const char *name, int *unitp); 195 static void acpi_reset_interfaces(device_t dev); 196 197 static device_method_t acpi_methods[] = { 198 /* Device interface */ 199 DEVMETHOD(device_probe, acpi_probe), 200 DEVMETHOD(device_attach, acpi_attach), 201 DEVMETHOD(device_shutdown, acpi_shutdown), 202 DEVMETHOD(device_detach, bus_generic_detach), 203 DEVMETHOD(device_suspend, acpi_suspend), 204 DEVMETHOD(device_resume, acpi_resume), 205 206 /* Bus interface */ 207 DEVMETHOD(bus_add_child, acpi_add_child), 208 DEVMETHOD(bus_print_child, acpi_print_child), 209 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch), 210 DEVMETHOD(bus_driver_added, acpi_driver_added), 211 DEVMETHOD(bus_child_deleted, acpi_child_deleted), 212 DEVMETHOD(bus_read_ivar, acpi_read_ivar), 213 DEVMETHOD(bus_write_ivar, acpi_write_ivar), 214 DEVMETHOD(bus_get_resource_list, acpi_get_rlist), 215 DEVMETHOD(bus_set_resource, acpi_set_resource), 216 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 217 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource), 218 DEVMETHOD(bus_adjust_resource, acpi_adjust_resource), 219 DEVMETHOD(bus_release_resource, acpi_release_resource), 220 DEVMETHOD(bus_delete_resource, acpi_delete_resource), 221 DEVMETHOD(bus_child_pnpinfo, acpi_child_pnpinfo_method), 222 DEVMETHOD(bus_child_location, acpi_child_location_method), 223 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 224 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 225 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 226 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 227 DEVMETHOD(bus_hint_device_unit, acpi_hint_device_unit), 228 DEVMETHOD(bus_get_cpus, acpi_get_cpus), 229 DEVMETHOD(bus_get_domain, acpi_get_domain), 230 DEVMETHOD(bus_get_property, acpi_bus_get_prop), 231 DEVMETHOD(bus_get_device_path, acpi_get_device_path), 232 233 /* ACPI bus */ 234 DEVMETHOD(acpi_id_probe, acpi_device_id_probe), 235 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj), 236 DEVMETHOD(acpi_get_property, acpi_device_get_prop), 237 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep), 238 DEVMETHOD(acpi_scan_children, acpi_device_scan_children), 239 240 /* ISA emulation */ 241 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe), 242 243 DEVMETHOD_END 244 }; 245 246 static driver_t acpi_driver = { 247 "acpi", 248 acpi_methods, 249 sizeof(struct acpi_softc), 250 }; 251 252 EARLY_DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_modevent, 0, 253 BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE); 254 MODULE_VERSION(acpi, 1); 255 256 ACPI_SERIAL_DECL(acpi, "ACPI root bus"); 257 258 /* Local pools for managing system resources for ACPI child devices. */ 259 static struct rman acpi_rman_io, acpi_rman_mem; 260 261 #define ACPI_MINIMUM_AWAKETIME 5 262 263 /* Holds the description of the acpi0 device. */ 264 static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2]; 265 266 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 267 "ACPI debugging"); 268 static char acpi_ca_version[12]; 269 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD, 270 acpi_ca_version, 0, "Version of Intel ACPI-CA"); 271 272 /* 273 * Allow overriding _OSI methods. 274 */ 275 static char acpi_install_interface[256]; 276 TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface, 277 sizeof(acpi_install_interface)); 278 static char acpi_remove_interface[256]; 279 TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface, 280 sizeof(acpi_remove_interface)); 281 282 /* Allow users to dump Debug objects without ACPI debugger. */ 283 static int acpi_debug_objects; 284 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects); 285 SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects, 286 CTLFLAG_RW | CTLTYPE_INT | CTLFLAG_MPSAFE, NULL, 0, 287 acpi_debug_objects_sysctl, "I", 288 "Enable Debug objects"); 289 290 /* Allow the interpreter to ignore common mistakes in BIOS. */ 291 static int acpi_interpreter_slack = 1; 292 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack); 293 SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RDTUN, 294 &acpi_interpreter_slack, 1, "Turn on interpreter slack mode."); 295 296 /* Ignore register widths set by FADT and use default widths instead. */ 297 static int acpi_ignore_reg_width = 1; 298 TUNABLE_INT("debug.acpi.default_register_width", &acpi_ignore_reg_width); 299 SYSCTL_INT(_debug_acpi, OID_AUTO, default_register_width, CTLFLAG_RDTUN, 300 &acpi_ignore_reg_width, 1, "Ignore register widths set by FADT"); 301 302 /* Allow users to override quirks. */ 303 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks); 304 305 int acpi_susp_bounce; 306 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW, 307 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices."); 308 309 /* 310 * ACPI standard UUID for Device Specific Data Package 311 * "Device Properties UUID for _DSD" Rev. 2.0 312 */ 313 static const struct uuid acpi_dsd_uuid = { 314 0xdaffd814, 0x6eba, 0x4d8c, 0x8a, 0x91, 315 { 0xbc, 0x9b, 0xbf, 0x4a, 0xa3, 0x01 } 316 }; 317 318 /* 319 * ACPI can only be loaded as a module by the loader; activating it after 320 * system bootstrap time is not useful, and can be fatal to the system. 321 * It also cannot be unloaded, since the entire system bus hierarchy hangs 322 * off it. 323 */ 324 static int 325 acpi_modevent(struct module *mod, int event, void *junk) 326 { 327 switch (event) { 328 case MOD_LOAD: 329 if (!cold) { 330 printf("The ACPI driver cannot be loaded after boot.\n"); 331 return (EPERM); 332 } 333 break; 334 case MOD_UNLOAD: 335 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI) 336 return (EBUSY); 337 break; 338 default: 339 break; 340 } 341 return (0); 342 } 343 344 /* 345 * Perform early initialization. 346 */ 347 ACPI_STATUS 348 acpi_Startup(void) 349 { 350 static int started = 0; 351 ACPI_STATUS status; 352 int val; 353 354 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 355 356 /* Only run the startup code once. The MADT driver also calls this. */ 357 if (started) 358 return_VALUE (AE_OK); 359 started = 1; 360 361 /* 362 * Initialize the ACPICA subsystem. 363 */ 364 if (ACPI_FAILURE(status = AcpiInitializeSubsystem())) { 365 printf("ACPI: Could not initialize Subsystem: %s\n", 366 AcpiFormatException(status)); 367 return_VALUE (status); 368 } 369 370 /* 371 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing 372 * if more tables exist. 373 */ 374 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) { 375 printf("ACPI: Table initialisation failed: %s\n", 376 AcpiFormatException(status)); 377 return_VALUE (status); 378 } 379 380 /* Set up any quirks we have for this system. */ 381 if (acpi_quirks == ACPI_Q_OK) 382 acpi_table_quirks(&acpi_quirks); 383 384 /* If the user manually set the disabled hint to 0, force-enable ACPI. */ 385 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0) 386 acpi_quirks &= ~ACPI_Q_BROKEN; 387 if (acpi_quirks & ACPI_Q_BROKEN) { 388 printf("ACPI disabled by blacklist. Contact your BIOS vendor.\n"); 389 status = AE_SUPPORT; 390 } 391 392 return_VALUE (status); 393 } 394 395 /* 396 * Detect ACPI and perform early initialisation. 397 */ 398 int 399 acpi_identify(void) 400 { 401 ACPI_TABLE_RSDP *rsdp; 402 ACPI_TABLE_HEADER *rsdt; 403 ACPI_PHYSICAL_ADDRESS paddr; 404 struct sbuf sb; 405 406 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 407 408 if (!cold) 409 return (ENXIO); 410 411 /* Check that we haven't been disabled with a hint. */ 412 if (resource_disabled("acpi", 0)) 413 return (ENXIO); 414 415 /* Check for other PM systems. */ 416 if (power_pm_get_type() != POWER_PM_TYPE_NONE && 417 power_pm_get_type() != POWER_PM_TYPE_ACPI) { 418 printf("ACPI identify failed, other PM system enabled.\n"); 419 return (ENXIO); 420 } 421 422 /* Initialize root tables. */ 423 if (ACPI_FAILURE(acpi_Startup())) { 424 printf("ACPI: Try disabling either ACPI or apic support.\n"); 425 return (ENXIO); 426 } 427 428 if ((paddr = AcpiOsGetRootPointer()) == 0 || 429 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL) 430 return (ENXIO); 431 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0) 432 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress; 433 else 434 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress; 435 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 436 437 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL) 438 return (ENXIO); 439 sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN); 440 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE); 441 sbuf_trim(&sb); 442 sbuf_putc(&sb, ' '); 443 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE); 444 sbuf_trim(&sb); 445 sbuf_finish(&sb); 446 sbuf_delete(&sb); 447 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 448 449 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION); 450 451 return (0); 452 } 453 454 /* 455 * Fetch some descriptive data from ACPI to put in our attach message. 456 */ 457 static int 458 acpi_probe(device_t dev) 459 { 460 461 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 462 463 device_set_desc(dev, acpi_desc); 464 465 return_VALUE (BUS_PROBE_NOWILDCARD); 466 } 467 468 static int 469 acpi_attach(device_t dev) 470 { 471 struct acpi_softc *sc; 472 ACPI_STATUS status; 473 int error, state; 474 UINT32 flags; 475 UINT8 TypeA, TypeB; 476 char *env; 477 478 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 479 480 sc = device_get_softc(dev); 481 sc->acpi_dev = dev; 482 callout_init(&sc->susp_force_to, 1); 483 484 error = ENXIO; 485 486 /* Initialize resource manager. */ 487 acpi_rman_io.rm_type = RMAN_ARRAY; 488 acpi_rman_io.rm_start = 0; 489 acpi_rman_io.rm_end = 0xffff; 490 acpi_rman_io.rm_descr = "ACPI I/O ports"; 491 if (rman_init(&acpi_rman_io) != 0) 492 panic("acpi rman_init IO ports failed"); 493 acpi_rman_mem.rm_type = RMAN_ARRAY; 494 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses"; 495 if (rman_init(&acpi_rman_mem) != 0) 496 panic("acpi rman_init memory failed"); 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 /* 622 * Default to 1 second before sleeping to give some machines time to 623 * stabilize. 624 */ 625 sc->acpi_sleep_delay = 1; 626 if (bootverbose) 627 sc->acpi_verbose = 1; 628 if ((env = kern_getenv("hw.acpi.verbose")) != NULL) { 629 if (strcmp(env, "0") != 0) 630 sc->acpi_verbose = 1; 631 freeenv(env); 632 } 633 634 /* Only enable reboot by default if the FADT says it is available. */ 635 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) 636 sc->acpi_handle_reboot = 1; 637 638 #if !ACPI_REDUCED_HARDWARE 639 /* Only enable S4BIOS by default if the FACS says it is available. */ 640 if (AcpiGbl_FACS != NULL && AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT) 641 sc->acpi_s4bios = 1; 642 #endif 643 644 /* Probe all supported sleep states. */ 645 acpi_sleep_states[ACPI_STATE_S0] = TRUE; 646 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++) 647 if (ACPI_SUCCESS(AcpiEvaluateObject(ACPI_ROOT_OBJECT, 648 __DECONST(char *, AcpiGbl_SleepStateNames[state]), NULL, NULL)) && 649 ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) 650 acpi_sleep_states[state] = TRUE; 651 652 /* 653 * Dispatch the default sleep state to devices. The lid switch is set 654 * to UNKNOWN by default to avoid surprising users. 655 */ 656 sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ? 657 ACPI_STATE_S5 : ACPI_STATE_UNKNOWN; 658 sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN; 659 sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ? 660 ACPI_STATE_S1 : ACPI_STATE_UNKNOWN; 661 sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ? 662 ACPI_STATE_S3 : ACPI_STATE_UNKNOWN; 663 664 /* Pick the first valid sleep state for the sleep button default. */ 665 sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN; 666 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++) 667 if (acpi_sleep_states[state]) { 668 sc->acpi_sleep_button_sx = state; 669 break; 670 } 671 672 acpi_enable_fixed_events(sc); 673 674 /* 675 * Scan the namespace and attach/initialise children. 676 */ 677 678 /* Register our shutdown handler. */ 679 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc, 680 SHUTDOWN_PRI_LAST); 681 682 /* 683 * Register our acpi event handlers. 684 * XXX should be configurable eg. via userland policy manager. 685 */ 686 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep, 687 sc, ACPI_EVENT_PRI_LAST); 688 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup, 689 sc, ACPI_EVENT_PRI_LAST); 690 691 /* Flag our initial states. */ 692 sc->acpi_enabled = TRUE; 693 sc->acpi_sstate = ACPI_STATE_S0; 694 sc->acpi_sleep_disabled = TRUE; 695 696 /* Create the control device */ 697 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0664, 698 "acpi"); 699 sc->acpi_dev_t->si_drv1 = sc; 700 701 if ((error = acpi_machdep_init(dev))) 702 goto out; 703 704 /* Register ACPI again to pass the correct argument of pm_func. */ 705 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc); 706 707 acpi_platform_osc(dev); 708 709 if (!acpi_disabled("bus")) { 710 EVENTHANDLER_REGISTER(dev_lookup, acpi_lookup, NULL, 1000); 711 acpi_probe_children(dev); 712 } 713 714 /* Update all GPEs and enable runtime GPEs. */ 715 status = AcpiUpdateAllGpes(); 716 if (ACPI_FAILURE(status)) 717 device_printf(dev, "Could not update all GPEs: %s\n", 718 AcpiFormatException(status)); 719 720 /* Allow sleep request after a while. */ 721 callout_init_mtx(&acpi_sleep_timer, &acpi_mutex, 0); 722 callout_reset(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME, 723 acpi_sleep_enable, sc); 724 725 error = 0; 726 727 out: 728 return_VALUE (error); 729 } 730 731 static void 732 acpi_set_power_children(device_t dev, int state) 733 { 734 device_t child; 735 device_t *devlist; 736 int dstate, i, numdevs; 737 738 if (device_get_children(dev, &devlist, &numdevs) != 0) 739 return; 740 741 /* 742 * Retrieve and set D-state for the sleep state if _SxD is present. 743 * Skip children who aren't attached since they are handled separately. 744 */ 745 for (i = 0; i < numdevs; i++) { 746 child = devlist[i]; 747 dstate = state; 748 if (device_is_attached(child) && 749 acpi_device_pwr_for_sleep(dev, child, &dstate) == 0) 750 acpi_set_powerstate(child, dstate); 751 } 752 free(devlist, M_TEMP); 753 } 754 755 static int 756 acpi_suspend(device_t dev) 757 { 758 int error; 759 760 bus_topo_assert(); 761 762 error = bus_generic_suspend(dev); 763 if (error == 0) 764 acpi_set_power_children(dev, ACPI_STATE_D3); 765 766 return (error); 767 } 768 769 static int 770 acpi_resume(device_t dev) 771 { 772 773 bus_topo_assert(); 774 775 acpi_set_power_children(dev, ACPI_STATE_D0); 776 777 return (bus_generic_resume(dev)); 778 } 779 780 static int 781 acpi_shutdown(device_t dev) 782 { 783 784 bus_topo_assert(); 785 786 /* Allow children to shutdown first. */ 787 bus_generic_shutdown(dev); 788 789 /* 790 * Enable any GPEs that are able to power-on the system (i.e., RTC). 791 * Also, disable any that are not valid for this state (most). 792 */ 793 acpi_wake_prep_walk(ACPI_STATE_S5); 794 795 return (0); 796 } 797 798 /* 799 * Handle a new device being added 800 */ 801 static device_t 802 acpi_add_child(device_t bus, u_int order, const char *name, int unit) 803 { 804 struct acpi_device *ad; 805 device_t child; 806 807 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL) 808 return (NULL); 809 810 resource_list_init(&ad->ad_rl); 811 812 child = device_add_child_ordered(bus, order, name, unit); 813 if (child != NULL) 814 device_set_ivars(child, ad); 815 else 816 free(ad, M_ACPIDEV); 817 return (child); 818 } 819 820 static int 821 acpi_print_child(device_t bus, device_t child) 822 { 823 struct acpi_device *adev = device_get_ivars(child); 824 struct resource_list *rl = &adev->ad_rl; 825 int retval = 0; 826 827 retval += bus_print_child_header(bus, child); 828 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#jx"); 829 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#jx"); 830 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd"); 831 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%jd"); 832 if (device_get_flags(child)) 833 retval += printf(" flags %#x", device_get_flags(child)); 834 retval += bus_print_child_domain(bus, child); 835 retval += bus_print_child_footer(bus, child); 836 837 return (retval); 838 } 839 840 /* 841 * If this device is an ACPI child but no one claimed it, attempt 842 * to power it off. We'll power it back up when a driver is added. 843 * 844 * XXX Disabled for now since many necessary devices (like fdc and 845 * ATA) don't claim the devices we created for them but still expect 846 * them to be powered up. 847 */ 848 static void 849 acpi_probe_nomatch(device_t bus, device_t child) 850 { 851 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER 852 acpi_set_powerstate(child, ACPI_STATE_D3); 853 #endif 854 } 855 856 /* 857 * If a new driver has a chance to probe a child, first power it up. 858 * 859 * XXX Disabled for now (see acpi_probe_nomatch for details). 860 */ 861 static void 862 acpi_driver_added(device_t dev, driver_t *driver) 863 { 864 device_t child, *devlist; 865 int i, numdevs; 866 867 DEVICE_IDENTIFY(driver, dev); 868 if (device_get_children(dev, &devlist, &numdevs)) 869 return; 870 for (i = 0; i < numdevs; i++) { 871 child = devlist[i]; 872 if (device_get_state(child) == DS_NOTPRESENT) { 873 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER 874 acpi_set_powerstate(child, ACPI_STATE_D0); 875 if (device_probe_and_attach(child) != 0) 876 acpi_set_powerstate(child, ACPI_STATE_D3); 877 #else 878 device_probe_and_attach(child); 879 #endif 880 } 881 } 882 free(devlist, M_TEMP); 883 } 884 885 /* Location hint for devctl(8) */ 886 static int 887 acpi_child_location_method(device_t cbdev, device_t child, struct sbuf *sb) 888 { 889 struct acpi_device *dinfo = device_get_ivars(child); 890 int pxm; 891 892 if (dinfo->ad_handle) { 893 sbuf_printf(sb, "handle=%s", acpi_name(dinfo->ad_handle)); 894 if (ACPI_SUCCESS(acpi_GetInteger(dinfo->ad_handle, "_PXM", &pxm))) { 895 sbuf_printf(sb, " _PXM=%d", pxm); 896 } 897 } 898 return (0); 899 } 900 901 /* PnP information for devctl(8) */ 902 int 903 acpi_pnpinfo(ACPI_HANDLE handle, struct sbuf *sb) 904 { 905 ACPI_DEVICE_INFO *adinfo; 906 907 if (ACPI_FAILURE(AcpiGetObjectInfo(handle, &adinfo))) { 908 sbuf_printf(sb, "unknown"); 909 return (0); 910 } 911 912 sbuf_printf(sb, "_HID=%s _UID=%lu _CID=%s", 913 (adinfo->Valid & ACPI_VALID_HID) ? 914 adinfo->HardwareId.String : "none", 915 (adinfo->Valid & ACPI_VALID_UID) ? 916 strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL, 917 ((adinfo->Valid & ACPI_VALID_CID) && 918 adinfo->CompatibleIdList.Count > 0) ? 919 adinfo->CompatibleIdList.Ids[0].String : "none"); 920 AcpiOsFree(adinfo); 921 922 return (0); 923 } 924 925 static int 926 acpi_child_pnpinfo_method(device_t cbdev, device_t child, struct sbuf *sb) 927 { 928 struct acpi_device *dinfo = device_get_ivars(child); 929 930 return (acpi_pnpinfo(dinfo->ad_handle, sb)); 931 } 932 933 /* 934 * Note: the check for ACPI locator may be redundant. However, this routine is 935 * suitable for both busses whose only locator is ACPI and as a building block 936 * for busses that have multiple locators to cope with. 937 */ 938 int 939 acpi_get_acpi_device_path(device_t bus, device_t child, const char *locator, struct sbuf *sb) 940 { 941 if (strcmp(locator, BUS_LOCATOR_ACPI) == 0) { 942 ACPI_HANDLE *handle = acpi_get_handle(child); 943 944 if (handle != NULL) 945 sbuf_printf(sb, "%s", acpi_name(handle)); 946 return (0); 947 } 948 949 return (bus_generic_get_device_path(bus, child, locator, sb)); 950 } 951 952 static int 953 acpi_get_device_path(device_t bus, device_t child, const char *locator, struct sbuf *sb) 954 { 955 struct acpi_device *dinfo = device_get_ivars(child); 956 957 if (strcmp(locator, BUS_LOCATOR_ACPI) == 0) 958 return (acpi_get_acpi_device_path(bus, child, locator, sb)); 959 960 if (strcmp(locator, BUS_LOCATOR_UEFI) == 0) { 961 ACPI_DEVICE_INFO *adinfo; 962 if (!ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo)) && 963 dinfo->ad_handle != 0 && (adinfo->Valid & ACPI_VALID_HID)) { 964 const char *hid = adinfo->HardwareId.String; 965 u_long uid = (adinfo->Valid & ACPI_VALID_UID) ? 966 strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL; 967 u_long hidval; 968 969 /* 970 * In UEFI Stanard Version 2.6, Section 9.6.1.6 Text 971 * Device Node Reference, there's an insanely long table 972 * 98. This implements the relevant bits from that 973 * table. Newer versions appear to have not required 974 * anything new. The EDK2 firmware presents both PciRoot 975 * and PcieRoot as PciRoot. Follow the EDK2 standard. 976 */ 977 if (strncmp("PNP", hid, 3) != 0) 978 goto nomatch; 979 hidval = strtoul(hid + 3, NULL, 16); 980 switch (hidval) { 981 case 0x0301: 982 sbuf_printf(sb, "Keyboard(0x%lx)", uid); 983 break; 984 case 0x0401: 985 sbuf_printf(sb, "ParallelPort(0x%lx)", uid); 986 break; 987 case 0x0501: 988 sbuf_printf(sb, "Serial(0x%lx)", uid); 989 break; 990 case 0x0604: 991 sbuf_printf(sb, "Floppy(0x%lx)", uid); 992 break; 993 case 0x0a03: 994 case 0x0a08: 995 sbuf_printf(sb, "PciRoot(0x%lx)", uid); 996 break; 997 default: /* Everything else gets a generic encode */ 998 nomatch: 999 sbuf_printf(sb, "Acpi(%s,0x%lx)", hid, uid); 1000 break; 1001 } 1002 } 1003 /* Not handled: AcpiAdr... unsure how to know it's one */ 1004 } 1005 1006 /* For the rest, punt to the default handler */ 1007 return (bus_generic_get_device_path(bus, child, locator, sb)); 1008 } 1009 1010 /* 1011 * Handle device deletion. 1012 */ 1013 static void 1014 acpi_child_deleted(device_t dev, device_t child) 1015 { 1016 struct acpi_device *dinfo = device_get_ivars(child); 1017 1018 if (acpi_get_device(dinfo->ad_handle) == child) 1019 AcpiDetachData(dinfo->ad_handle, acpi_fake_objhandler); 1020 } 1021 1022 /* 1023 * Handle per-device ivars 1024 */ 1025 static int 1026 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) 1027 { 1028 struct acpi_device *ad; 1029 1030 if ((ad = device_get_ivars(child)) == NULL) { 1031 device_printf(child, "device has no ivars\n"); 1032 return (ENOENT); 1033 } 1034 1035 /* ACPI and ISA compatibility ivars */ 1036 switch(index) { 1037 case ACPI_IVAR_HANDLE: 1038 *(ACPI_HANDLE *)result = ad->ad_handle; 1039 break; 1040 case ACPI_IVAR_PRIVATE: 1041 *(void **)result = ad->ad_private; 1042 break; 1043 case ACPI_IVAR_FLAGS: 1044 *(int *)result = ad->ad_flags; 1045 break; 1046 case ISA_IVAR_VENDORID: 1047 case ISA_IVAR_SERIAL: 1048 case ISA_IVAR_COMPATID: 1049 *(int *)result = -1; 1050 break; 1051 case ISA_IVAR_LOGICALID: 1052 *(int *)result = acpi_isa_get_logicalid(child); 1053 break; 1054 case PCI_IVAR_CLASS: 1055 *(uint8_t*)result = (ad->ad_cls_class >> 16) & 0xff; 1056 break; 1057 case PCI_IVAR_SUBCLASS: 1058 *(uint8_t*)result = (ad->ad_cls_class >> 8) & 0xff; 1059 break; 1060 case PCI_IVAR_PROGIF: 1061 *(uint8_t*)result = (ad->ad_cls_class >> 0) & 0xff; 1062 break; 1063 default: 1064 return (ENOENT); 1065 } 1066 1067 return (0); 1068 } 1069 1070 static int 1071 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value) 1072 { 1073 struct acpi_device *ad; 1074 1075 if ((ad = device_get_ivars(child)) == NULL) { 1076 device_printf(child, "device has no ivars\n"); 1077 return (ENOENT); 1078 } 1079 1080 switch(index) { 1081 case ACPI_IVAR_HANDLE: 1082 ad->ad_handle = (ACPI_HANDLE)value; 1083 break; 1084 case ACPI_IVAR_PRIVATE: 1085 ad->ad_private = (void *)value; 1086 break; 1087 case ACPI_IVAR_FLAGS: 1088 ad->ad_flags = (int)value; 1089 break; 1090 default: 1091 panic("bad ivar write request (%d)", index); 1092 return (ENOENT); 1093 } 1094 1095 return (0); 1096 } 1097 1098 /* 1099 * Handle child resource allocation/removal 1100 */ 1101 static struct resource_list * 1102 acpi_get_rlist(device_t dev, device_t child) 1103 { 1104 struct acpi_device *ad; 1105 1106 ad = device_get_ivars(child); 1107 return (&ad->ad_rl); 1108 } 1109 1110 static int 1111 acpi_match_resource_hint(device_t dev, int type, long value) 1112 { 1113 struct acpi_device *ad = device_get_ivars(dev); 1114 struct resource_list *rl = &ad->ad_rl; 1115 struct resource_list_entry *rle; 1116 1117 STAILQ_FOREACH(rle, rl, link) { 1118 if (rle->type != type) 1119 continue; 1120 if (rle->start <= value && rle->end >= value) 1121 return (1); 1122 } 1123 return (0); 1124 } 1125 1126 /* 1127 * Does this device match because the resources match? 1128 */ 1129 static bool 1130 acpi_hint_device_matches_resources(device_t child, const char *name, 1131 int unit) 1132 { 1133 long value; 1134 bool matches; 1135 1136 /* 1137 * Check for matching resources. We must have at least one match. 1138 * Since I/O and memory resources cannot be shared, if we get a 1139 * match on either of those, ignore any mismatches in IRQs or DRQs. 1140 * 1141 * XXX: We may want to revisit this to be more lenient and wire 1142 * as long as it gets one match. 1143 */ 1144 matches = false; 1145 if (resource_long_value(name, unit, "port", &value) == 0) { 1146 /* 1147 * Floppy drive controllers are notorious for having a 1148 * wide variety of resources not all of which include the 1149 * first port that is specified by the hint (typically 1150 * 0x3f0) (see the comment above fdc_isa_alloc_resources() 1151 * in fdc_isa.c). However, they do all seem to include 1152 * port + 2 (e.g. 0x3f2) so for a floppy device, look for 1153 * 'value + 2' in the port resources instead of the hint 1154 * value. 1155 */ 1156 if (strcmp(name, "fdc") == 0) 1157 value += 2; 1158 if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value)) 1159 matches = true; 1160 else 1161 return false; 1162 } 1163 if (resource_long_value(name, unit, "maddr", &value) == 0) { 1164 if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value)) 1165 matches = true; 1166 else 1167 return false; 1168 } 1169 1170 /* 1171 * If either the I/O address and/or the memory address matched, then 1172 * assumed this devices matches and that any mismatch in other resources 1173 * will be resolved by siltently ignoring those other resources. Otherwise 1174 * all further resources must match. 1175 */ 1176 if (matches) { 1177 return (true); 1178 } 1179 if (resource_long_value(name, unit, "irq", &value) == 0) { 1180 if (acpi_match_resource_hint(child, SYS_RES_IRQ, value)) 1181 matches = true; 1182 else 1183 return false; 1184 } 1185 if (resource_long_value(name, unit, "drq", &value) == 0) { 1186 if (acpi_match_resource_hint(child, SYS_RES_DRQ, value)) 1187 matches = true; 1188 else 1189 return false; 1190 } 1191 return matches; 1192 } 1193 1194 1195 /* 1196 * Wire device unit numbers based on resource matches in hints. 1197 */ 1198 static void 1199 acpi_hint_device_unit(device_t acdev, device_t child, const char *name, 1200 int *unitp) 1201 { 1202 device_location_cache_t *cache; 1203 const char *s; 1204 int line, unit; 1205 bool matches; 1206 1207 /* 1208 * Iterate over all the hints for the devices with the specified 1209 * name to see if one's resources are a subset of this device. 1210 */ 1211 line = 0; 1212 cache = dev_wired_cache_init(); 1213 while (resource_find_dev(&line, name, &unit, "at", NULL) == 0) { 1214 /* Must have an "at" for acpi or isa. */ 1215 resource_string_value(name, unit, "at", &s); 1216 matches = false; 1217 if (strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 || 1218 strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0) 1219 matches = acpi_hint_device_matches_resources(child, name, unit); 1220 else 1221 matches = dev_wired_cache_match(cache, child, s); 1222 1223 if (matches) { 1224 /* We have a winner! */ 1225 *unitp = unit; 1226 break; 1227 } 1228 } 1229 dev_wired_cache_fini(cache); 1230 } 1231 1232 /* 1233 * Fetch the NUMA domain for a device by mapping the value returned by 1234 * _PXM to a NUMA domain. If the device does not have a _PXM method, 1235 * -2 is returned. If any other error occurs, -1 is returned. 1236 */ 1237 static int 1238 acpi_parse_pxm(device_t dev) 1239 { 1240 #ifdef NUMA 1241 #if defined(__i386__) || defined(__amd64__) || defined(__aarch64__) 1242 ACPI_HANDLE handle; 1243 ACPI_STATUS status; 1244 int pxm; 1245 1246 handle = acpi_get_handle(dev); 1247 if (handle == NULL) 1248 return (-2); 1249 status = acpi_GetInteger(handle, "_PXM", &pxm); 1250 if (ACPI_SUCCESS(status)) 1251 return (acpi_map_pxm_to_vm_domainid(pxm)); 1252 if (status == AE_NOT_FOUND) 1253 return (-2); 1254 #endif 1255 #endif 1256 return (-1); 1257 } 1258 1259 int 1260 acpi_get_cpus(device_t dev, device_t child, enum cpu_sets op, size_t setsize, 1261 cpuset_t *cpuset) 1262 { 1263 int d, error; 1264 1265 d = acpi_parse_pxm(child); 1266 if (d < 0) 1267 return (bus_generic_get_cpus(dev, child, op, setsize, cpuset)); 1268 1269 switch (op) { 1270 case LOCAL_CPUS: 1271 if (setsize != sizeof(cpuset_t)) 1272 return (EINVAL); 1273 *cpuset = cpuset_domain[d]; 1274 return (0); 1275 case INTR_CPUS: 1276 error = bus_generic_get_cpus(dev, child, op, setsize, cpuset); 1277 if (error != 0) 1278 return (error); 1279 if (setsize != sizeof(cpuset_t)) 1280 return (EINVAL); 1281 CPU_AND(cpuset, cpuset, &cpuset_domain[d]); 1282 return (0); 1283 default: 1284 return (bus_generic_get_cpus(dev, child, op, setsize, cpuset)); 1285 } 1286 } 1287 1288 /* 1289 * Fetch the NUMA domain for the given device 'dev'. 1290 * 1291 * If a device has a _PXM method, map that to a NUMA domain. 1292 * Otherwise, pass the request up to the parent. 1293 * If there's no matching domain or the domain cannot be 1294 * determined, return ENOENT. 1295 */ 1296 int 1297 acpi_get_domain(device_t dev, device_t child, int *domain) 1298 { 1299 int d; 1300 1301 d = acpi_parse_pxm(child); 1302 if (d >= 0) { 1303 *domain = d; 1304 return (0); 1305 } 1306 if (d == -1) 1307 return (ENOENT); 1308 1309 /* No _PXM node; go up a level */ 1310 return (bus_generic_get_domain(dev, child, domain)); 1311 } 1312 1313 /* 1314 * Pre-allocate/manage all memory and IO resources. Since rman can't handle 1315 * duplicates, we merge any in the sysresource attach routine. 1316 */ 1317 static int 1318 acpi_sysres_alloc(device_t dev) 1319 { 1320 struct resource *res; 1321 struct resource_list *rl; 1322 struct resource_list_entry *rle; 1323 struct rman *rm; 1324 device_t *children; 1325 int child_count, i; 1326 1327 /* 1328 * Probe/attach any sysresource devices. This would be unnecessary if we 1329 * had multi-pass probe/attach. 1330 */ 1331 if (device_get_children(dev, &children, &child_count) != 0) 1332 return (ENXIO); 1333 for (i = 0; i < child_count; i++) { 1334 if (ACPI_ID_PROBE(dev, children[i], sysres_ids, NULL) <= 0) 1335 device_probe_and_attach(children[i]); 1336 } 1337 free(children, M_TEMP); 1338 1339 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev); 1340 STAILQ_FOREACH(rle, rl, link) { 1341 if (rle->res != NULL) { 1342 device_printf(dev, "duplicate resource for %jx\n", rle->start); 1343 continue; 1344 } 1345 1346 /* Only memory and IO resources are valid here. */ 1347 switch (rle->type) { 1348 case SYS_RES_IOPORT: 1349 rm = &acpi_rman_io; 1350 break; 1351 case SYS_RES_MEMORY: 1352 rm = &acpi_rman_mem; 1353 break; 1354 default: 1355 continue; 1356 } 1357 1358 /* Pre-allocate resource and add to our rman pool. */ 1359 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type, 1360 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0); 1361 if (res != NULL) { 1362 rman_manage_region(rm, rman_get_start(res), rman_get_end(res)); 1363 rle->res = res; 1364 } else if (bootverbose) 1365 device_printf(dev, "reservation of %jx, %jx (%d) failed\n", 1366 rle->start, rle->count, rle->type); 1367 } 1368 return (0); 1369 } 1370 1371 /* 1372 * Reserve declared resources for devices found during attach once system 1373 * resources have been allocated. 1374 */ 1375 static void 1376 acpi_reserve_resources(device_t dev) 1377 { 1378 struct resource_list_entry *rle; 1379 struct resource_list *rl; 1380 struct acpi_device *ad; 1381 struct acpi_softc *sc; 1382 device_t *children; 1383 int child_count, i; 1384 1385 sc = device_get_softc(dev); 1386 if (device_get_children(dev, &children, &child_count) != 0) 1387 return; 1388 for (i = 0; i < child_count; i++) { 1389 ad = device_get_ivars(children[i]); 1390 rl = &ad->ad_rl; 1391 1392 /* Don't reserve system resources. */ 1393 if (ACPI_ID_PROBE(dev, children[i], sysres_ids, NULL) <= 0) 1394 continue; 1395 1396 STAILQ_FOREACH(rle, rl, link) { 1397 /* 1398 * Don't reserve IRQ resources. There are many sticky things 1399 * to get right otherwise (e.g. IRQs for psm, atkbd, and HPET 1400 * when using legacy routing). 1401 */ 1402 if (rle->type == SYS_RES_IRQ) 1403 continue; 1404 1405 /* 1406 * Don't reserve the resource if it is already allocated. 1407 * The acpi_ec(4) driver can allocate its resources early 1408 * if ECDT is present. 1409 */ 1410 if (rle->res != NULL) 1411 continue; 1412 1413 /* 1414 * Try to reserve the resource from our parent. If this 1415 * fails because the resource is a system resource, just 1416 * let it be. The resource range is already reserved so 1417 * that other devices will not use it. If the driver 1418 * needs to allocate the resource, then 1419 * acpi_alloc_resource() will sub-alloc from the system 1420 * resource. 1421 */ 1422 resource_list_reserve(rl, dev, children[i], rle->type, &rle->rid, 1423 rle->start, rle->end, rle->count, 0); 1424 } 1425 } 1426 free(children, M_TEMP); 1427 sc->acpi_resources_reserved = 1; 1428 } 1429 1430 static int 1431 acpi_set_resource(device_t dev, device_t child, int type, int rid, 1432 rman_res_t start, rman_res_t count) 1433 { 1434 struct acpi_softc *sc = device_get_softc(dev); 1435 struct acpi_device *ad = device_get_ivars(child); 1436 struct resource_list *rl = &ad->ad_rl; 1437 ACPI_DEVICE_INFO *devinfo; 1438 rman_res_t end; 1439 int allow; 1440 1441 /* Ignore IRQ resources for PCI link devices. */ 1442 if (type == SYS_RES_IRQ && 1443 ACPI_ID_PROBE(dev, child, pcilink_ids, NULL) <= 0) 1444 return (0); 1445 1446 /* 1447 * Ignore most resources for PCI root bridges. Some BIOSes 1448 * incorrectly enumerate the memory ranges they decode as plain 1449 * memory resources instead of as ResourceProducer ranges. Other 1450 * BIOSes incorrectly list system resource entries for I/O ranges 1451 * under the PCI bridge. Do allow the one known-correct case on 1452 * x86 of a PCI bridge claiming the I/O ports used for PCI config 1453 * access. 1454 */ 1455 if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) { 1456 if (ACPI_SUCCESS(AcpiGetObjectInfo(ad->ad_handle, &devinfo))) { 1457 if ((devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0) { 1458 #if defined(__i386__) || defined(__amd64__) 1459 allow = (type == SYS_RES_IOPORT && start == CONF1_ADDR_PORT); 1460 #else 1461 allow = 0; 1462 #endif 1463 if (!allow) { 1464 AcpiOsFree(devinfo); 1465 return (0); 1466 } 1467 } 1468 AcpiOsFree(devinfo); 1469 } 1470 } 1471 1472 #ifdef INTRNG 1473 /* map with default for now */ 1474 if (type == SYS_RES_IRQ) 1475 start = (rman_res_t)acpi_map_intr(child, (u_int)start, 1476 acpi_get_handle(child)); 1477 #endif 1478 1479 /* If the resource is already allocated, fail. */ 1480 if (resource_list_busy(rl, type, rid)) 1481 return (EBUSY); 1482 1483 /* If the resource is already reserved, release it. */ 1484 if (resource_list_reserved(rl, type, rid)) 1485 resource_list_unreserve(rl, dev, child, type, rid); 1486 1487 /* Add the resource. */ 1488 end = (start + count - 1); 1489 resource_list_add(rl, type, rid, start, end, count); 1490 1491 /* Don't reserve resources until the system resources are allocated. */ 1492 if (!sc->acpi_resources_reserved) 1493 return (0); 1494 1495 /* Don't reserve system resources. */ 1496 if (ACPI_ID_PROBE(dev, child, sysres_ids, NULL) <= 0) 1497 return (0); 1498 1499 /* 1500 * Don't reserve IRQ resources. There are many sticky things to 1501 * get right otherwise (e.g. IRQs for psm, atkbd, and HPET when 1502 * using legacy routing). 1503 */ 1504 if (type == SYS_RES_IRQ) 1505 return (0); 1506 1507 /* 1508 * Don't reserve resources for CPU devices. Some of these 1509 * resources need to be allocated as shareable, but reservations 1510 * are always non-shareable. 1511 */ 1512 if (device_get_devclass(child) == devclass_find("cpu")) 1513 return (0); 1514 1515 /* 1516 * Reserve the resource. 1517 * 1518 * XXX: Ignores failure for now. Failure here is probably a 1519 * BIOS/firmware bug? 1520 */ 1521 resource_list_reserve(rl, dev, child, type, &rid, start, end, count, 0); 1522 return (0); 1523 } 1524 1525 static struct resource * 1526 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, 1527 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 1528 { 1529 #ifndef INTRNG 1530 ACPI_RESOURCE ares; 1531 #endif 1532 struct acpi_device *ad; 1533 struct resource_list_entry *rle; 1534 struct resource_list *rl; 1535 struct resource *res; 1536 int isdefault = RMAN_IS_DEFAULT_RANGE(start, end); 1537 1538 /* 1539 * First attempt at allocating the resource. For direct children, 1540 * use resource_list_alloc() to handle reserved resources. For 1541 * other devices, pass the request up to our parent. 1542 */ 1543 if (bus == device_get_parent(child)) { 1544 ad = device_get_ivars(child); 1545 rl = &ad->ad_rl; 1546 1547 /* 1548 * Simulate the behavior of the ISA bus for direct children 1549 * devices. That is, if a non-default range is specified for 1550 * a resource that doesn't exist, use bus_set_resource() to 1551 * add the resource before allocating it. Note that these 1552 * resources will not be reserved. 1553 */ 1554 if (!isdefault && resource_list_find(rl, type, *rid) == NULL) 1555 resource_list_add(rl, type, *rid, start, end, count); 1556 res = resource_list_alloc(rl, bus, child, type, rid, start, end, count, 1557 flags); 1558 #ifndef INTRNG 1559 if (res != NULL && type == SYS_RES_IRQ) { 1560 /* 1561 * Since bus_config_intr() takes immediate effect, we cannot 1562 * configure the interrupt associated with a device when we 1563 * parse the resources but have to defer it until a driver 1564 * actually allocates the interrupt via bus_alloc_resource(). 1565 * 1566 * XXX: Should we handle the lookup failing? 1567 */ 1568 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares))) 1569 acpi_config_intr(child, &ares); 1570 } 1571 #endif 1572 1573 /* 1574 * If this is an allocation of the "default" range for a given 1575 * RID, fetch the exact bounds for this resource from the 1576 * resource list entry to try to allocate the range from the 1577 * system resource regions. 1578 */ 1579 if (res == NULL && isdefault) { 1580 rle = resource_list_find(rl, type, *rid); 1581 if (rle != NULL) { 1582 start = rle->start; 1583 end = rle->end; 1584 count = rle->count; 1585 } 1586 } 1587 } else 1588 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid, 1589 start, end, count, flags); 1590 1591 /* 1592 * If the first attempt failed and this is an allocation of a 1593 * specific range, try to satisfy the request via a suballocation 1594 * from our system resource regions. 1595 */ 1596 if (res == NULL && start + count - 1 == end) 1597 res = acpi_alloc_sysres(child, type, rid, start, end, count, flags); 1598 return (res); 1599 } 1600 1601 /* 1602 * Attempt to allocate a specific resource range from the system 1603 * resource ranges. Note that we only handle memory and I/O port 1604 * system resources. 1605 */ 1606 struct resource * 1607 acpi_alloc_sysres(device_t child, int type, int *rid, rman_res_t start, 1608 rman_res_t end, rman_res_t count, u_int flags) 1609 { 1610 struct rman *rm; 1611 struct resource *res; 1612 1613 switch (type) { 1614 case SYS_RES_IOPORT: 1615 rm = &acpi_rman_io; 1616 break; 1617 case SYS_RES_MEMORY: 1618 rm = &acpi_rman_mem; 1619 break; 1620 default: 1621 return (NULL); 1622 } 1623 1624 KASSERT(start + count - 1 == end, ("wildcard resource range")); 1625 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE, 1626 child); 1627 if (res == NULL) 1628 return (NULL); 1629 1630 rman_set_rid(res, *rid); 1631 1632 /* If requested, activate the resource using the parent's method. */ 1633 if (flags & RF_ACTIVE) 1634 if (bus_activate_resource(child, type, *rid, res) != 0) { 1635 rman_release_resource(res); 1636 return (NULL); 1637 } 1638 1639 return (res); 1640 } 1641 1642 static int 1643 acpi_is_resource_managed(int type, struct resource *r) 1644 { 1645 1646 /* We only handle memory and IO resources through rman. */ 1647 switch (type) { 1648 case SYS_RES_IOPORT: 1649 return (rman_is_region_manager(r, &acpi_rman_io)); 1650 case SYS_RES_MEMORY: 1651 return (rman_is_region_manager(r, &acpi_rman_mem)); 1652 } 1653 return (0); 1654 } 1655 1656 static int 1657 acpi_adjust_resource(device_t bus, device_t child, int type, struct resource *r, 1658 rman_res_t start, rman_res_t end) 1659 { 1660 1661 if (acpi_is_resource_managed(type, r)) 1662 return (rman_adjust_resource(r, start, end)); 1663 return (bus_generic_adjust_resource(bus, child, type, r, start, end)); 1664 } 1665 1666 static int 1667 acpi_release_resource(device_t bus, device_t child, int type, int rid, 1668 struct resource *r) 1669 { 1670 int ret; 1671 1672 /* 1673 * If this resource belongs to one of our internal managers, 1674 * deactivate it and release it to the local pool. 1675 */ 1676 if (acpi_is_resource_managed(type, r)) { 1677 if (rman_get_flags(r) & RF_ACTIVE) { 1678 ret = bus_deactivate_resource(child, type, rid, r); 1679 if (ret != 0) 1680 return (ret); 1681 } 1682 return (rman_release_resource(r)); 1683 } 1684 1685 return (bus_generic_rl_release_resource(bus, child, type, rid, r)); 1686 } 1687 1688 static void 1689 acpi_delete_resource(device_t bus, device_t child, int type, int rid) 1690 { 1691 struct resource_list *rl; 1692 1693 rl = acpi_get_rlist(bus, child); 1694 if (resource_list_busy(rl, type, rid)) { 1695 device_printf(bus, "delete_resource: Resource still owned by child" 1696 " (type=%d, rid=%d)\n", type, rid); 1697 return; 1698 } 1699 resource_list_unreserve(rl, bus, child, type, rid); 1700 resource_list_delete(rl, type, rid); 1701 } 1702 1703 /* Allocate an IO port or memory resource, given its GAS. */ 1704 int 1705 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas, 1706 struct resource **res, u_int flags) 1707 { 1708 int error, res_type; 1709 1710 error = ENOMEM; 1711 if (type == NULL || rid == NULL || gas == NULL || res == NULL) 1712 return (EINVAL); 1713 1714 /* We only support memory and IO spaces. */ 1715 switch (gas->SpaceId) { 1716 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 1717 res_type = SYS_RES_MEMORY; 1718 break; 1719 case ACPI_ADR_SPACE_SYSTEM_IO: 1720 res_type = SYS_RES_IOPORT; 1721 break; 1722 default: 1723 return (EOPNOTSUPP); 1724 } 1725 1726 /* 1727 * If the register width is less than 8, assume the BIOS author means 1728 * it is a bit field and just allocate a byte. 1729 */ 1730 if (gas->BitWidth && gas->BitWidth < 8) 1731 gas->BitWidth = 8; 1732 1733 /* Validate the address after we're sure we support the space. */ 1734 if (gas->Address == 0 || gas->BitWidth == 0) 1735 return (EINVAL); 1736 1737 bus_set_resource(dev, res_type, *rid, gas->Address, 1738 gas->BitWidth / 8); 1739 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags); 1740 if (*res != NULL) { 1741 *type = res_type; 1742 error = 0; 1743 } else 1744 bus_delete_resource(dev, res_type, *rid); 1745 1746 return (error); 1747 } 1748 1749 /* Probe _HID and _CID for compatible ISA PNP ids. */ 1750 static uint32_t 1751 acpi_isa_get_logicalid(device_t dev) 1752 { 1753 ACPI_DEVICE_INFO *devinfo; 1754 ACPI_HANDLE h; 1755 uint32_t pnpid; 1756 1757 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1758 1759 /* Fetch and validate the HID. */ 1760 if ((h = acpi_get_handle(dev)) == NULL || 1761 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 1762 return_VALUE (0); 1763 1764 pnpid = (devinfo->Valid & ACPI_VALID_HID) != 0 && 1765 devinfo->HardwareId.Length >= ACPI_EISAID_STRING_SIZE ? 1766 PNP_EISAID(devinfo->HardwareId.String) : 0; 1767 AcpiOsFree(devinfo); 1768 1769 return_VALUE (pnpid); 1770 } 1771 1772 static int 1773 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count) 1774 { 1775 ACPI_DEVICE_INFO *devinfo; 1776 ACPI_PNP_DEVICE_ID *ids; 1777 ACPI_HANDLE h; 1778 uint32_t *pnpid; 1779 int i, valid; 1780 1781 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1782 1783 pnpid = cids; 1784 1785 /* Fetch and validate the CID */ 1786 if ((h = acpi_get_handle(dev)) == NULL || 1787 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 1788 return_VALUE (0); 1789 1790 if ((devinfo->Valid & ACPI_VALID_CID) == 0) { 1791 AcpiOsFree(devinfo); 1792 return_VALUE (0); 1793 } 1794 1795 if (devinfo->CompatibleIdList.Count < count) 1796 count = devinfo->CompatibleIdList.Count; 1797 ids = devinfo->CompatibleIdList.Ids; 1798 for (i = 0, valid = 0; i < count; i++) 1799 if (ids[i].Length >= ACPI_EISAID_STRING_SIZE && 1800 strncmp(ids[i].String, "PNP", 3) == 0) { 1801 *pnpid++ = PNP_EISAID(ids[i].String); 1802 valid++; 1803 } 1804 AcpiOsFree(devinfo); 1805 1806 return_VALUE (valid); 1807 } 1808 1809 static int 1810 acpi_device_id_probe(device_t bus, device_t dev, char **ids, char **match) 1811 { 1812 ACPI_HANDLE h; 1813 ACPI_OBJECT_TYPE t; 1814 int rv; 1815 int i; 1816 1817 h = acpi_get_handle(dev); 1818 if (ids == NULL || h == NULL) 1819 return (ENXIO); 1820 t = acpi_get_type(dev); 1821 if (t != ACPI_TYPE_DEVICE && t != ACPI_TYPE_PROCESSOR) 1822 return (ENXIO); 1823 1824 /* Try to match one of the array of IDs with a HID or CID. */ 1825 for (i = 0; ids[i] != NULL; i++) { 1826 rv = acpi_MatchHid(h, ids[i]); 1827 if (rv == ACPI_MATCHHID_NOMATCH) 1828 continue; 1829 1830 if (match != NULL) { 1831 *match = ids[i]; 1832 } 1833 return ((rv == ACPI_MATCHHID_HID)? 1834 BUS_PROBE_DEFAULT : BUS_PROBE_LOW_PRIORITY); 1835 } 1836 return (ENXIO); 1837 } 1838 1839 static ACPI_STATUS 1840 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname, 1841 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret) 1842 { 1843 ACPI_HANDLE h; 1844 1845 if (dev == NULL) 1846 h = ACPI_ROOT_OBJECT; 1847 else if ((h = acpi_get_handle(dev)) == NULL) 1848 return (AE_BAD_PARAMETER); 1849 return (AcpiEvaluateObject(h, pathname, parameters, ret)); 1850 } 1851 1852 static ACPI_STATUS 1853 acpi_device_get_prop(device_t bus, device_t dev, ACPI_STRING propname, 1854 const ACPI_OBJECT **value) 1855 { 1856 const ACPI_OBJECT *pkg, *name, *val; 1857 struct acpi_device *ad; 1858 ACPI_STATUS status; 1859 int i; 1860 1861 ad = device_get_ivars(dev); 1862 1863 if (ad == NULL || propname == NULL) 1864 return (AE_BAD_PARAMETER); 1865 if (ad->dsd_pkg == NULL) { 1866 if (ad->dsd.Pointer == NULL) { 1867 status = acpi_find_dsd(ad); 1868 if (ACPI_FAILURE(status)) 1869 return (status); 1870 } else { 1871 return (AE_NOT_FOUND); 1872 } 1873 } 1874 1875 for (i = 0; i < ad->dsd_pkg->Package.Count; i ++) { 1876 pkg = &ad->dsd_pkg->Package.Elements[i]; 1877 if (pkg->Type != ACPI_TYPE_PACKAGE || pkg->Package.Count != 2) 1878 continue; 1879 1880 name = &pkg->Package.Elements[0]; 1881 val = &pkg->Package.Elements[1]; 1882 if (name->Type != ACPI_TYPE_STRING) 1883 continue; 1884 if (strncmp(propname, name->String.Pointer, name->String.Length) == 0) { 1885 if (value != NULL) 1886 *value = val; 1887 1888 return (AE_OK); 1889 } 1890 } 1891 1892 return (AE_NOT_FOUND); 1893 } 1894 1895 static ACPI_STATUS 1896 acpi_find_dsd(struct acpi_device *ad) 1897 { 1898 const ACPI_OBJECT *dsd, *guid, *pkg; 1899 ACPI_STATUS status; 1900 1901 ad->dsd.Length = ACPI_ALLOCATE_BUFFER; 1902 ad->dsd.Pointer = NULL; 1903 ad->dsd_pkg = NULL; 1904 1905 status = AcpiEvaluateObject(ad->ad_handle, "_DSD", NULL, &ad->dsd); 1906 if (ACPI_FAILURE(status)) 1907 return (status); 1908 1909 dsd = ad->dsd.Pointer; 1910 guid = &dsd->Package.Elements[0]; 1911 pkg = &dsd->Package.Elements[1]; 1912 1913 if (guid->Type != ACPI_TYPE_BUFFER || pkg->Type != ACPI_TYPE_PACKAGE || 1914 guid->Buffer.Length != sizeof(acpi_dsd_uuid)) 1915 return (AE_NOT_FOUND); 1916 if (memcmp(guid->Buffer.Pointer, &acpi_dsd_uuid, 1917 sizeof(acpi_dsd_uuid)) == 0) { 1918 1919 ad->dsd_pkg = pkg; 1920 return (AE_OK); 1921 } 1922 1923 return (AE_NOT_FOUND); 1924 } 1925 1926 static ssize_t 1927 acpi_bus_get_prop_handle(const ACPI_OBJECT *hobj, void *propvalue, size_t size) 1928 { 1929 ACPI_OBJECT *pobj; 1930 ACPI_HANDLE h; 1931 1932 if (hobj->Type != ACPI_TYPE_PACKAGE) 1933 goto err; 1934 if (hobj->Package.Count != 1) 1935 goto err; 1936 1937 pobj = &hobj->Package.Elements[0]; 1938 if (pobj == NULL) 1939 goto err; 1940 if (pobj->Type != ACPI_TYPE_LOCAL_REFERENCE) 1941 goto err; 1942 1943 h = acpi_GetReference(NULL, pobj); 1944 if (h == NULL) 1945 goto err; 1946 1947 if (propvalue != NULL && size >= sizeof(ACPI_HANDLE)) 1948 *(ACPI_HANDLE *)propvalue = h; 1949 return (sizeof(ACPI_HANDLE)); 1950 1951 err: 1952 return (-1); 1953 } 1954 1955 static ssize_t 1956 acpi_bus_get_prop(device_t bus, device_t child, const char *propname, 1957 void *propvalue, size_t size, device_property_type_t type) 1958 { 1959 ACPI_STATUS status; 1960 const ACPI_OBJECT *obj; 1961 1962 status = acpi_device_get_prop(bus, child, __DECONST(char *, propname), 1963 &obj); 1964 if (ACPI_FAILURE(status)) 1965 return (-1); 1966 1967 switch (type) { 1968 case DEVICE_PROP_ANY: 1969 case DEVICE_PROP_BUFFER: 1970 case DEVICE_PROP_UINT32: 1971 case DEVICE_PROP_UINT64: 1972 break; 1973 case DEVICE_PROP_HANDLE: 1974 return (acpi_bus_get_prop_handle(obj, propvalue, size)); 1975 default: 1976 return (-1); 1977 } 1978 1979 switch (obj->Type) { 1980 case ACPI_TYPE_INTEGER: 1981 if (type == DEVICE_PROP_UINT32) { 1982 if (propvalue != NULL && size >= sizeof(uint32_t)) 1983 *((uint32_t *)propvalue) = obj->Integer.Value; 1984 return (sizeof(uint32_t)); 1985 } 1986 if (propvalue != NULL && size >= sizeof(uint64_t)) 1987 *((uint64_t *) propvalue) = obj->Integer.Value; 1988 return (sizeof(uint64_t)); 1989 1990 case ACPI_TYPE_STRING: 1991 if (type != DEVICE_PROP_ANY && 1992 type != DEVICE_PROP_BUFFER) 1993 return (-1); 1994 1995 if (propvalue != NULL && size > 0) 1996 memcpy(propvalue, obj->String.Pointer, 1997 MIN(size, obj->String.Length)); 1998 return (obj->String.Length); 1999 2000 case ACPI_TYPE_BUFFER: 2001 if (propvalue != NULL && size > 0) 2002 memcpy(propvalue, obj->Buffer.Pointer, 2003 MIN(size, obj->Buffer.Length)); 2004 return (obj->Buffer.Length); 2005 2006 case ACPI_TYPE_PACKAGE: 2007 if (propvalue != NULL && size >= sizeof(ACPI_OBJECT *)) { 2008 *((ACPI_OBJECT **) propvalue) = 2009 __DECONST(ACPI_OBJECT *, obj); 2010 } 2011 return (sizeof(ACPI_OBJECT *)); 2012 2013 case ACPI_TYPE_LOCAL_REFERENCE: 2014 if (propvalue != NULL && size >= sizeof(ACPI_HANDLE)) { 2015 ACPI_HANDLE h; 2016 2017 h = acpi_GetReference(NULL, 2018 __DECONST(ACPI_OBJECT *, obj)); 2019 memcpy(propvalue, h, sizeof(ACPI_HANDLE)); 2020 } 2021 return (sizeof(ACPI_HANDLE)); 2022 default: 2023 return (0); 2024 } 2025 } 2026 2027 int 2028 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate) 2029 { 2030 struct acpi_softc *sc; 2031 ACPI_HANDLE handle; 2032 ACPI_STATUS status; 2033 char sxd[8]; 2034 2035 handle = acpi_get_handle(dev); 2036 2037 /* 2038 * XXX If we find these devices, don't try to power them down. 2039 * The serial and IRDA ports on my T23 hang the system when 2040 * set to D3 and it appears that such legacy devices may 2041 * need special handling in their drivers. 2042 */ 2043 if (dstate == NULL || handle == NULL || 2044 acpi_MatchHid(handle, "PNP0500") || 2045 acpi_MatchHid(handle, "PNP0501") || 2046 acpi_MatchHid(handle, "PNP0502") || 2047 acpi_MatchHid(handle, "PNP0510") || 2048 acpi_MatchHid(handle, "PNP0511")) 2049 return (ENXIO); 2050 2051 /* 2052 * Override next state with the value from _SxD, if present. 2053 * Note illegal _S0D is evaluated because some systems expect this. 2054 */ 2055 sc = device_get_softc(bus); 2056 snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate); 2057 status = acpi_GetInteger(handle, sxd, dstate); 2058 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { 2059 device_printf(dev, "failed to get %s on %s: %s\n", sxd, 2060 acpi_name(handle), AcpiFormatException(status)); 2061 return (ENXIO); 2062 } 2063 2064 return (0); 2065 } 2066 2067 /* Callback arg for our implementation of walking the namespace. */ 2068 struct acpi_device_scan_ctx { 2069 acpi_scan_cb_t user_fn; 2070 void *arg; 2071 ACPI_HANDLE parent; 2072 }; 2073 2074 static ACPI_STATUS 2075 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval) 2076 { 2077 struct acpi_device_scan_ctx *ctx; 2078 device_t dev, old_dev; 2079 ACPI_STATUS status; 2080 ACPI_OBJECT_TYPE type; 2081 2082 /* 2083 * Skip this device if we think we'll have trouble with it or it is 2084 * the parent where the scan began. 2085 */ 2086 ctx = (struct acpi_device_scan_ctx *)arg; 2087 if (acpi_avoid(h) || h == ctx->parent) 2088 return (AE_OK); 2089 2090 /* If this is not a valid device type (e.g., a method), skip it. */ 2091 if (ACPI_FAILURE(AcpiGetType(h, &type))) 2092 return (AE_OK); 2093 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR && 2094 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER) 2095 return (AE_OK); 2096 2097 /* 2098 * Call the user function with the current device. If it is unchanged 2099 * afterwards, return. Otherwise, we update the handle to the new dev. 2100 */ 2101 old_dev = acpi_get_device(h); 2102 dev = old_dev; 2103 status = ctx->user_fn(h, &dev, level, ctx->arg); 2104 if (ACPI_FAILURE(status) || old_dev == dev) 2105 return (status); 2106 2107 /* Remove the old child and its connection to the handle. */ 2108 if (old_dev != NULL) 2109 device_delete_child(device_get_parent(old_dev), old_dev); 2110 2111 /* Recreate the handle association if the user created a device. */ 2112 if (dev != NULL) 2113 AcpiAttachData(h, acpi_fake_objhandler, dev); 2114 2115 return (AE_OK); 2116 } 2117 2118 static ACPI_STATUS 2119 acpi_device_scan_children(device_t bus, device_t dev, int max_depth, 2120 acpi_scan_cb_t user_fn, void *arg) 2121 { 2122 ACPI_HANDLE h; 2123 struct acpi_device_scan_ctx ctx; 2124 2125 if (acpi_disabled("children")) 2126 return (AE_OK); 2127 2128 if (dev == NULL) 2129 h = ACPI_ROOT_OBJECT; 2130 else if ((h = acpi_get_handle(dev)) == NULL) 2131 return (AE_BAD_PARAMETER); 2132 ctx.user_fn = user_fn; 2133 ctx.arg = arg; 2134 ctx.parent = h; 2135 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth, 2136 acpi_device_scan_cb, NULL, &ctx, NULL)); 2137 } 2138 2139 /* 2140 * Even though ACPI devices are not PCI, we use the PCI approach for setting 2141 * device power states since it's close enough to ACPI. 2142 */ 2143 int 2144 acpi_set_powerstate(device_t child, int state) 2145 { 2146 ACPI_HANDLE h; 2147 ACPI_STATUS status; 2148 2149 h = acpi_get_handle(child); 2150 if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX) 2151 return (EINVAL); 2152 if (h == NULL) 2153 return (0); 2154 2155 /* Ignore errors if the power methods aren't present. */ 2156 status = acpi_pwr_switch_consumer(h, state); 2157 if (ACPI_SUCCESS(status)) { 2158 if (bootverbose) 2159 device_printf(child, "set ACPI power state D%d on %s\n", 2160 state, acpi_name(h)); 2161 } else if (status != AE_NOT_FOUND) 2162 device_printf(child, 2163 "failed to set ACPI power state D%d on %s: %s\n", state, 2164 acpi_name(h), AcpiFormatException(status)); 2165 2166 return (0); 2167 } 2168 2169 static int 2170 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids) 2171 { 2172 int result, cid_count, i; 2173 uint32_t lid, cids[8]; 2174 2175 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 2176 2177 /* 2178 * ISA-style drivers attached to ACPI may persist and 2179 * probe manually if we return ENOENT. We never want 2180 * that to happen, so don't ever return it. 2181 */ 2182 result = ENXIO; 2183 2184 /* Scan the supplied IDs for a match */ 2185 lid = acpi_isa_get_logicalid(child); 2186 cid_count = acpi_isa_get_compatid(child, cids, 8); 2187 while (ids && ids->ip_id) { 2188 if (lid == ids->ip_id) { 2189 result = 0; 2190 goto out; 2191 } 2192 for (i = 0; i < cid_count; i++) { 2193 if (cids[i] == ids->ip_id) { 2194 result = 0; 2195 goto out; 2196 } 2197 } 2198 ids++; 2199 } 2200 2201 out: 2202 if (result == 0 && ids->ip_desc) 2203 device_set_desc(child, ids->ip_desc); 2204 2205 return_VALUE (result); 2206 } 2207 2208 /* 2209 * Look for a MCFG table. If it is present, use the settings for 2210 * domain (segment) 0 to setup PCI config space access via the memory 2211 * map. 2212 * 2213 * On non-x86 architectures (arm64 for now), this will be done from the 2214 * PCI host bridge driver. 2215 */ 2216 static void 2217 acpi_enable_pcie(void) 2218 { 2219 #if defined(__i386__) || defined(__amd64__) 2220 ACPI_TABLE_HEADER *hdr; 2221 ACPI_MCFG_ALLOCATION *alloc, *end; 2222 ACPI_STATUS status; 2223 2224 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr); 2225 if (ACPI_FAILURE(status)) 2226 return; 2227 2228 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length); 2229 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1); 2230 while (alloc < end) { 2231 if (alloc->PciSegment == 0) { 2232 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber, 2233 alloc->EndBusNumber); 2234 return; 2235 } 2236 alloc++; 2237 } 2238 #endif 2239 } 2240 2241 static void 2242 acpi_platform_osc(device_t dev) 2243 { 2244 ACPI_HANDLE sb_handle; 2245 ACPI_STATUS status; 2246 uint32_t cap_set[2]; 2247 2248 /* 0811B06E-4A27-44F9-8D60-3CBBC22E7B48 */ 2249 static uint8_t acpi_platform_uuid[ACPI_UUID_LENGTH] = { 2250 0x6e, 0xb0, 0x11, 0x08, 0x27, 0x4a, 0xf9, 0x44, 2251 0x8d, 0x60, 0x3c, 0xbb, 0xc2, 0x2e, 0x7b, 0x48 2252 }; 2253 2254 if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) 2255 return; 2256 2257 cap_set[1] = 0x10; /* APEI Support */ 2258 status = acpi_EvaluateOSC(sb_handle, acpi_platform_uuid, 1, 2259 nitems(cap_set), cap_set, cap_set, false); 2260 if (ACPI_FAILURE(status)) { 2261 if (status == AE_NOT_FOUND) 2262 return; 2263 device_printf(dev, "_OSC failed: %s\n", 2264 AcpiFormatException(status)); 2265 return; 2266 } 2267 } 2268 2269 /* 2270 * Scan all of the ACPI namespace and attach child devices. 2271 * 2272 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and 2273 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec. 2274 * However, in violation of the spec, some systems place their PCI link 2275 * devices in \, so we have to walk the whole namespace. We check the 2276 * type of namespace nodes, so this should be ok. 2277 */ 2278 static void 2279 acpi_probe_children(device_t bus) 2280 { 2281 2282 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 2283 2284 /* 2285 * Scan the namespace and insert placeholders for all the devices that 2286 * we find. We also probe/attach any early devices. 2287 * 2288 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because 2289 * we want to create nodes for all devices, not just those that are 2290 * currently present. (This assumes that we don't want to create/remove 2291 * devices as they appear, which might be smarter.) 2292 */ 2293 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n")); 2294 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child, 2295 NULL, bus, NULL); 2296 2297 /* Pre-allocate resources for our rman from any sysresource devices. */ 2298 acpi_sysres_alloc(bus); 2299 2300 /* Reserve resources already allocated to children. */ 2301 acpi_reserve_resources(bus); 2302 2303 /* Create any static children by calling device identify methods. */ 2304 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n")); 2305 bus_generic_probe(bus); 2306 2307 /* Probe/attach all children, created statically and from the namespace. */ 2308 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "acpi bus_generic_attach\n")); 2309 bus_generic_attach(bus); 2310 2311 /* Attach wake sysctls. */ 2312 acpi_wake_sysctl_walk(bus); 2313 2314 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n")); 2315 return_VOID; 2316 } 2317 2318 /* 2319 * Determine the probe order for a given device. 2320 */ 2321 static void 2322 acpi_probe_order(ACPI_HANDLE handle, int *order) 2323 { 2324 ACPI_OBJECT_TYPE type; 2325 2326 /* 2327 * 0. CPUs 2328 * 1. I/O port and memory system resource holders 2329 * 2. Clocks and timers (to handle early accesses) 2330 * 3. Embedded controllers (to handle early accesses) 2331 * 4. PCI Link Devices 2332 */ 2333 AcpiGetType(handle, &type); 2334 if (type == ACPI_TYPE_PROCESSOR) 2335 *order = 0; 2336 else if (acpi_MatchHid(handle, "PNP0C01") || 2337 acpi_MatchHid(handle, "PNP0C02")) 2338 *order = 1; 2339 else if (acpi_MatchHid(handle, "PNP0100") || 2340 acpi_MatchHid(handle, "PNP0103") || 2341 acpi_MatchHid(handle, "PNP0B00")) 2342 *order = 2; 2343 else if (acpi_MatchHid(handle, "PNP0C09")) 2344 *order = 3; 2345 else if (acpi_MatchHid(handle, "PNP0C0F")) 2346 *order = 4; 2347 } 2348 2349 /* 2350 * Evaluate a child device and determine whether we might attach a device to 2351 * it. 2352 */ 2353 static ACPI_STATUS 2354 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 2355 { 2356 ACPI_DEVICE_INFO *devinfo; 2357 struct acpi_device *ad; 2358 struct acpi_prw_data prw; 2359 ACPI_OBJECT_TYPE type; 2360 ACPI_HANDLE h; 2361 device_t bus, child; 2362 char *handle_str; 2363 int order; 2364 2365 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 2366 2367 if (acpi_disabled("children")) 2368 return_ACPI_STATUS (AE_OK); 2369 2370 /* Skip this device if we think we'll have trouble with it. */ 2371 if (acpi_avoid(handle)) 2372 return_ACPI_STATUS (AE_OK); 2373 2374 bus = (device_t)context; 2375 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) { 2376 handle_str = acpi_name(handle); 2377 switch (type) { 2378 case ACPI_TYPE_DEVICE: 2379 /* 2380 * Since we scan from \, be sure to skip system scope objects. 2381 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around 2382 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run 2383 * during the initialization and \_TZ_ is to support Notify() on it. 2384 */ 2385 if (strcmp(handle_str, "\\_SB_") == 0 || 2386 strcmp(handle_str, "\\_TZ_") == 0) 2387 break; 2388 if (acpi_parse_prw(handle, &prw) == 0) 2389 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit); 2390 2391 /* 2392 * Ignore devices that do not have a _HID or _CID. They should 2393 * be discovered by other buses (e.g. the PCI bus driver). 2394 */ 2395 if (!acpi_has_hid(handle)) 2396 break; 2397 /* FALLTHROUGH */ 2398 case ACPI_TYPE_PROCESSOR: 2399 case ACPI_TYPE_THERMAL: 2400 case ACPI_TYPE_POWER: 2401 /* 2402 * Create a placeholder device for this node. Sort the 2403 * placeholder so that the probe/attach passes will run 2404 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER 2405 * are reserved for special objects (i.e., system 2406 * resources). 2407 */ 2408 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str)); 2409 order = level * 10 + ACPI_DEV_BASE_ORDER; 2410 acpi_probe_order(handle, &order); 2411 child = BUS_ADD_CHILD(bus, order, NULL, -1); 2412 if (child == NULL) 2413 break; 2414 2415 /* Associate the handle with the device_t and vice versa. */ 2416 acpi_set_handle(child, handle); 2417 AcpiAttachData(handle, acpi_fake_objhandler, child); 2418 2419 /* 2420 * Check that the device is present. If it's not present, 2421 * leave it disabled (so that we have a device_t attached to 2422 * the handle, but we don't probe it). 2423 * 2424 * XXX PCI link devices sometimes report "present" but not 2425 * "functional" (i.e. if disabled). Go ahead and probe them 2426 * anyway since we may enable them later. 2427 */ 2428 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) { 2429 /* Never disable PCI link devices. */ 2430 if (acpi_MatchHid(handle, "PNP0C0F")) 2431 break; 2432 2433 /* 2434 * RTC Device should be enabled for CMOS register space 2435 * unless FADT indicate it is not present. 2436 * (checked in RTC probe routine.) 2437 */ 2438 if (acpi_MatchHid(handle, "PNP0B00")) 2439 break; 2440 2441 /* 2442 * Docking stations should remain enabled since the system 2443 * may be undocked at boot. 2444 */ 2445 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h))) 2446 break; 2447 2448 device_disable(child); 2449 break; 2450 } 2451 2452 /* 2453 * Get the device's resource settings and attach them. 2454 * Note that if the device has _PRS but no _CRS, we need 2455 * to decide when it's appropriate to try to configure the 2456 * device. Ignore the return value here; it's OK for the 2457 * device not to have any resources. 2458 */ 2459 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL); 2460 2461 ad = device_get_ivars(child); 2462 ad->ad_cls_class = 0xffffff; 2463 if (ACPI_SUCCESS(AcpiGetObjectInfo(handle, &devinfo))) { 2464 if ((devinfo->Valid & ACPI_VALID_CLS) != 0 && 2465 devinfo->ClassCode.Length >= ACPI_PCICLS_STRING_SIZE) { 2466 ad->ad_cls_class = strtoul(devinfo->ClassCode.String, 2467 NULL, 16); 2468 } 2469 AcpiOsFree(devinfo); 2470 } 2471 break; 2472 } 2473 } 2474 2475 return_ACPI_STATUS (AE_OK); 2476 } 2477 2478 /* 2479 * AcpiAttachData() requires an object handler but never uses it. This is a 2480 * placeholder object handler so we can store a device_t in an ACPI_HANDLE. 2481 */ 2482 void 2483 acpi_fake_objhandler(ACPI_HANDLE h, void *data) 2484 { 2485 } 2486 2487 static void 2488 acpi_shutdown_final(void *arg, int howto) 2489 { 2490 struct acpi_softc *sc = (struct acpi_softc *)arg; 2491 register_t intr; 2492 ACPI_STATUS status; 2493 2494 /* 2495 * XXX Shutdown code should only run on the BSP (cpuid 0). 2496 * Some chipsets do not power off the system correctly if called from 2497 * an AP. 2498 */ 2499 if ((howto & RB_POWEROFF) != 0) { 2500 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 2501 if (ACPI_FAILURE(status)) { 2502 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 2503 AcpiFormatException(status)); 2504 return; 2505 } 2506 device_printf(sc->acpi_dev, "Powering system off\n"); 2507 intr = intr_disable(); 2508 status = AcpiEnterSleepState(ACPI_STATE_S5); 2509 if (ACPI_FAILURE(status)) { 2510 intr_restore(intr); 2511 device_printf(sc->acpi_dev, "power-off failed - %s\n", 2512 AcpiFormatException(status)); 2513 } else { 2514 DELAY(1000000); 2515 intr_restore(intr); 2516 device_printf(sc->acpi_dev, "power-off failed - timeout\n"); 2517 } 2518 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) { 2519 /* Reboot using the reset register. */ 2520 status = AcpiReset(); 2521 if (ACPI_SUCCESS(status)) { 2522 DELAY(1000000); 2523 device_printf(sc->acpi_dev, "reset failed - timeout\n"); 2524 } else if (status != AE_NOT_EXIST) 2525 device_printf(sc->acpi_dev, "reset failed - %s\n", 2526 AcpiFormatException(status)); 2527 } else if (sc->acpi_do_disable && !KERNEL_PANICKED()) { 2528 /* 2529 * Only disable ACPI if the user requested. On some systems, writing 2530 * the disable value to SMI_CMD hangs the system. 2531 */ 2532 device_printf(sc->acpi_dev, "Shutting down\n"); 2533 AcpiTerminate(); 2534 } 2535 } 2536 2537 static void 2538 acpi_enable_fixed_events(struct acpi_softc *sc) 2539 { 2540 static int first_time = 1; 2541 2542 /* Enable and clear fixed events and install handlers. */ 2543 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) { 2544 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 2545 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON, 2546 acpi_event_power_button_sleep, sc); 2547 if (first_time) 2548 device_printf(sc->acpi_dev, "Power Button (fixed)\n"); 2549 } 2550 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) { 2551 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 2552 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON, 2553 acpi_event_sleep_button_sleep, sc); 2554 if (first_time) 2555 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n"); 2556 } 2557 2558 first_time = 0; 2559 } 2560 2561 /* 2562 * Returns true if the device is actually present and should 2563 * be attached to. This requires the present, enabled, UI-visible 2564 * and diagnostics-passed bits to be set. 2565 */ 2566 BOOLEAN 2567 acpi_DeviceIsPresent(device_t dev) 2568 { 2569 ACPI_HANDLE h; 2570 UINT32 s; 2571 ACPI_STATUS status; 2572 2573 h = acpi_get_handle(dev); 2574 if (h == NULL) 2575 return (FALSE); 2576 2577 #ifdef ACPI_EARLY_EPYC_WAR 2578 /* 2579 * Certain Treadripper boards always returns 0 for FreeBSD because it 2580 * only returns non-zero for the OS string "Windows 2015". Otherwise it 2581 * will return zero. Force them to always be treated as present. 2582 * Beata versions were worse: they always returned 0. 2583 */ 2584 if (acpi_MatchHid(h, "AMDI0020") || acpi_MatchHid(h, "AMDI0010")) 2585 return (TRUE); 2586 #endif 2587 2588 status = acpi_GetInteger(h, "_STA", &s); 2589 2590 /* 2591 * If no _STA method or if it failed, then assume that 2592 * the device is present. 2593 */ 2594 if (ACPI_FAILURE(status)) 2595 return (TRUE); 2596 2597 return (ACPI_DEVICE_PRESENT(s) ? TRUE : FALSE); 2598 } 2599 2600 /* 2601 * Returns true if the battery is actually present and inserted. 2602 */ 2603 BOOLEAN 2604 acpi_BatteryIsPresent(device_t dev) 2605 { 2606 ACPI_HANDLE h; 2607 UINT32 s; 2608 ACPI_STATUS status; 2609 2610 h = acpi_get_handle(dev); 2611 if (h == NULL) 2612 return (FALSE); 2613 status = acpi_GetInteger(h, "_STA", &s); 2614 2615 /* 2616 * If no _STA method or if it failed, then assume that 2617 * the device is present. 2618 */ 2619 if (ACPI_FAILURE(status)) 2620 return (TRUE); 2621 2622 return (ACPI_BATTERY_PRESENT(s) ? TRUE : FALSE); 2623 } 2624 2625 /* 2626 * Returns true if a device has at least one valid device ID. 2627 */ 2628 BOOLEAN 2629 acpi_has_hid(ACPI_HANDLE h) 2630 { 2631 ACPI_DEVICE_INFO *devinfo; 2632 BOOLEAN ret; 2633 2634 if (h == NULL || 2635 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 2636 return (FALSE); 2637 2638 ret = FALSE; 2639 if ((devinfo->Valid & ACPI_VALID_HID) != 0) 2640 ret = TRUE; 2641 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) 2642 if (devinfo->CompatibleIdList.Count > 0) 2643 ret = TRUE; 2644 2645 AcpiOsFree(devinfo); 2646 return (ret); 2647 } 2648 2649 /* 2650 * Match a HID string against a handle 2651 * returns ACPI_MATCHHID_HID if _HID match 2652 * ACPI_MATCHHID_CID if _CID match and not _HID match. 2653 * ACPI_MATCHHID_NOMATCH=0 if no match. 2654 */ 2655 int 2656 acpi_MatchHid(ACPI_HANDLE h, const char *hid) 2657 { 2658 ACPI_DEVICE_INFO *devinfo; 2659 BOOLEAN ret; 2660 int i; 2661 2662 if (hid == NULL || h == NULL || 2663 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 2664 return (ACPI_MATCHHID_NOMATCH); 2665 2666 ret = ACPI_MATCHHID_NOMATCH; 2667 if ((devinfo->Valid & ACPI_VALID_HID) != 0 && 2668 strcmp(hid, devinfo->HardwareId.String) == 0) 2669 ret = ACPI_MATCHHID_HID; 2670 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) 2671 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) { 2672 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) { 2673 ret = ACPI_MATCHHID_CID; 2674 break; 2675 } 2676 } 2677 2678 AcpiOsFree(devinfo); 2679 return (ret); 2680 } 2681 2682 /* 2683 * Return the handle of a named object within our scope, ie. that of (parent) 2684 * or one if its parents. 2685 */ 2686 ACPI_STATUS 2687 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result) 2688 { 2689 ACPI_HANDLE r; 2690 ACPI_STATUS status; 2691 2692 /* Walk back up the tree to the root */ 2693 for (;;) { 2694 status = AcpiGetHandle(parent, path, &r); 2695 if (ACPI_SUCCESS(status)) { 2696 *result = r; 2697 return (AE_OK); 2698 } 2699 /* XXX Return error here? */ 2700 if (status != AE_NOT_FOUND) 2701 return (AE_OK); 2702 if (ACPI_FAILURE(AcpiGetParent(parent, &r))) 2703 return (AE_NOT_FOUND); 2704 parent = r; 2705 } 2706 } 2707 2708 ACPI_STATUS 2709 acpi_GetProperty(device_t dev, ACPI_STRING propname, 2710 const ACPI_OBJECT **value) 2711 { 2712 device_t bus = device_get_parent(dev); 2713 2714 return (ACPI_GET_PROPERTY(bus, dev, propname, value)); 2715 } 2716 2717 /* 2718 * Allocate a buffer with a preset data size. 2719 */ 2720 ACPI_BUFFER * 2721 acpi_AllocBuffer(int size) 2722 { 2723 ACPI_BUFFER *buf; 2724 2725 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL) 2726 return (NULL); 2727 buf->Length = size; 2728 buf->Pointer = (void *)(buf + 1); 2729 return (buf); 2730 } 2731 2732 ACPI_STATUS 2733 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number) 2734 { 2735 ACPI_OBJECT arg1; 2736 ACPI_OBJECT_LIST args; 2737 2738 arg1.Type = ACPI_TYPE_INTEGER; 2739 arg1.Integer.Value = number; 2740 args.Count = 1; 2741 args.Pointer = &arg1; 2742 2743 return (AcpiEvaluateObject(handle, path, &args, NULL)); 2744 } 2745 2746 /* 2747 * Evaluate a path that should return an integer. 2748 */ 2749 ACPI_STATUS 2750 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number) 2751 { 2752 ACPI_STATUS status; 2753 ACPI_BUFFER buf; 2754 ACPI_OBJECT param; 2755 2756 if (handle == NULL) 2757 handle = ACPI_ROOT_OBJECT; 2758 2759 /* 2760 * Assume that what we've been pointed at is an Integer object, or 2761 * a method that will return an Integer. 2762 */ 2763 buf.Pointer = ¶m; 2764 buf.Length = sizeof(param); 2765 status = AcpiEvaluateObject(handle, path, NULL, &buf); 2766 if (ACPI_SUCCESS(status)) { 2767 if (param.Type == ACPI_TYPE_INTEGER) 2768 *number = param.Integer.Value; 2769 else 2770 status = AE_TYPE; 2771 } 2772 2773 /* 2774 * In some applications, a method that's expected to return an Integer 2775 * may instead return a Buffer (probably to simplify some internal 2776 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer, 2777 * convert it into an Integer as best we can. 2778 * 2779 * This is a hack. 2780 */ 2781 if (status == AE_BUFFER_OVERFLOW) { 2782 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) { 2783 status = AE_NO_MEMORY; 2784 } else { 2785 status = AcpiEvaluateObject(handle, path, NULL, &buf); 2786 if (ACPI_SUCCESS(status)) 2787 status = acpi_ConvertBufferToInteger(&buf, number); 2788 AcpiOsFree(buf.Pointer); 2789 } 2790 } 2791 return (status); 2792 } 2793 2794 ACPI_STATUS 2795 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number) 2796 { 2797 ACPI_OBJECT *p; 2798 UINT8 *val; 2799 int i; 2800 2801 p = (ACPI_OBJECT *)bufp->Pointer; 2802 if (p->Type == ACPI_TYPE_INTEGER) { 2803 *number = p->Integer.Value; 2804 return (AE_OK); 2805 } 2806 if (p->Type != ACPI_TYPE_BUFFER) 2807 return (AE_TYPE); 2808 if (p->Buffer.Length > sizeof(int)) 2809 return (AE_BAD_DATA); 2810 2811 *number = 0; 2812 val = p->Buffer.Pointer; 2813 for (i = 0; i < p->Buffer.Length; i++) 2814 *number += val[i] << (i * 8); 2815 return (AE_OK); 2816 } 2817 2818 /* 2819 * Iterate over the elements of an a package object, calling the supplied 2820 * function for each element. 2821 * 2822 * XXX possible enhancement might be to abort traversal on error. 2823 */ 2824 ACPI_STATUS 2825 acpi_ForeachPackageObject(ACPI_OBJECT *pkg, 2826 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg) 2827 { 2828 ACPI_OBJECT *comp; 2829 int i; 2830 2831 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE) 2832 return (AE_BAD_PARAMETER); 2833 2834 /* Iterate over components */ 2835 i = 0; 2836 comp = pkg->Package.Elements; 2837 for (; i < pkg->Package.Count; i++, comp++) 2838 func(comp, arg); 2839 2840 return (AE_OK); 2841 } 2842 2843 /* 2844 * Find the (index)th resource object in a set. 2845 */ 2846 ACPI_STATUS 2847 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp) 2848 { 2849 ACPI_RESOURCE *rp; 2850 int i; 2851 2852 rp = (ACPI_RESOURCE *)buf->Pointer; 2853 i = index; 2854 while (i-- > 0) { 2855 /* Range check */ 2856 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 2857 return (AE_BAD_PARAMETER); 2858 2859 /* Check for terminator */ 2860 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0) 2861 return (AE_NOT_FOUND); 2862 rp = ACPI_NEXT_RESOURCE(rp); 2863 } 2864 if (resp != NULL) 2865 *resp = rp; 2866 2867 return (AE_OK); 2868 } 2869 2870 /* 2871 * Append an ACPI_RESOURCE to an ACPI_BUFFER. 2872 * 2873 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER 2874 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible 2875 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of 2876 * resources. 2877 */ 2878 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512 2879 2880 ACPI_STATUS 2881 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res) 2882 { 2883 ACPI_RESOURCE *rp; 2884 void *newp; 2885 2886 /* Initialise the buffer if necessary. */ 2887 if (buf->Pointer == NULL) { 2888 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE; 2889 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL) 2890 return (AE_NO_MEMORY); 2891 rp = (ACPI_RESOURCE *)buf->Pointer; 2892 rp->Type = ACPI_RESOURCE_TYPE_END_TAG; 2893 rp->Length = ACPI_RS_SIZE_MIN; 2894 } 2895 if (res == NULL) 2896 return (AE_OK); 2897 2898 /* 2899 * Scan the current buffer looking for the terminator. 2900 * This will either find the terminator or hit the end 2901 * of the buffer and return an error. 2902 */ 2903 rp = (ACPI_RESOURCE *)buf->Pointer; 2904 for (;;) { 2905 /* Range check, don't go outside the buffer */ 2906 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 2907 return (AE_BAD_PARAMETER); 2908 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0) 2909 break; 2910 rp = ACPI_NEXT_RESOURCE(rp); 2911 } 2912 2913 /* 2914 * Check the size of the buffer and expand if required. 2915 * 2916 * Required size is: 2917 * size of existing resources before terminator + 2918 * size of new resource and header + 2919 * size of terminator. 2920 * 2921 * Note that this loop should really only run once, unless 2922 * for some reason we are stuffing a *really* huge resource. 2923 */ 2924 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) + 2925 res->Length + ACPI_RS_SIZE_NO_DATA + 2926 ACPI_RS_SIZE_MIN) >= buf->Length) { 2927 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL) 2928 return (AE_NO_MEMORY); 2929 bcopy(buf->Pointer, newp, buf->Length); 2930 rp = (ACPI_RESOURCE *)((u_int8_t *)newp + 2931 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer)); 2932 AcpiOsFree(buf->Pointer); 2933 buf->Pointer = newp; 2934 buf->Length += buf->Length; 2935 } 2936 2937 /* Insert the new resource. */ 2938 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA); 2939 2940 /* And add the terminator. */ 2941 rp = ACPI_NEXT_RESOURCE(rp); 2942 rp->Type = ACPI_RESOURCE_TYPE_END_TAG; 2943 rp->Length = ACPI_RS_SIZE_MIN; 2944 2945 return (AE_OK); 2946 } 2947 2948 UINT64 2949 acpi_DSMQuery(ACPI_HANDLE h, const uint8_t *uuid, int revision) 2950 { 2951 /* 2952 * ACPI spec 9.1.1 defines this. 2953 * 2954 * "Arg2: Function Index Represents a specific function whose meaning is 2955 * specific to the UUID and Revision ID. Function indices should start 2956 * with 1. Function number zero is a query function (see the special 2957 * return code defined below)." 2958 */ 2959 ACPI_BUFFER buf; 2960 ACPI_OBJECT *obj; 2961 UINT64 ret = 0; 2962 int i; 2963 2964 if (!ACPI_SUCCESS(acpi_EvaluateDSM(h, uuid, revision, 0, NULL, &buf))) { 2965 ACPI_INFO(("Failed to enumerate DSM functions\n")); 2966 return (0); 2967 } 2968 2969 obj = (ACPI_OBJECT *)buf.Pointer; 2970 KASSERT(obj, ("Object not allowed to be NULL\n")); 2971 2972 /* 2973 * From ACPI 6.2 spec 9.1.1: 2974 * If Function Index = 0, a Buffer containing a function index bitfield. 2975 * Otherwise, the return value and type depends on the UUID and revision 2976 * ID (see below). 2977 */ 2978 switch (obj->Type) { 2979 case ACPI_TYPE_BUFFER: 2980 for (i = 0; i < MIN(obj->Buffer.Length, sizeof(ret)); i++) 2981 ret |= (((uint64_t)obj->Buffer.Pointer[i]) << (i * 8)); 2982 break; 2983 case ACPI_TYPE_INTEGER: 2984 ACPI_BIOS_WARNING((AE_INFO, 2985 "Possibly buggy BIOS with ACPI_TYPE_INTEGER for function enumeration\n")); 2986 ret = obj->Integer.Value; 2987 break; 2988 default: 2989 ACPI_WARNING((AE_INFO, "Unexpected return type %u\n", obj->Type)); 2990 }; 2991 2992 AcpiOsFree(obj); 2993 return ret; 2994 } 2995 2996 /* 2997 * DSM may return multiple types depending on the function. It is therefore 2998 * unsafe to use the typed evaluation. It is highly recommended that the caller 2999 * check the type of the returned object. 3000 */ 3001 ACPI_STATUS 3002 acpi_EvaluateDSM(ACPI_HANDLE handle, const uint8_t *uuid, int revision, 3003 UINT64 function, ACPI_OBJECT *package, ACPI_BUFFER *out_buf) 3004 { 3005 return (acpi_EvaluateDSMTyped(handle, uuid, revision, function, 3006 package, out_buf, ACPI_TYPE_ANY)); 3007 } 3008 3009 ACPI_STATUS 3010 acpi_EvaluateDSMTyped(ACPI_HANDLE handle, const uint8_t *uuid, int revision, 3011 UINT64 function, ACPI_OBJECT *package, ACPI_BUFFER *out_buf, 3012 ACPI_OBJECT_TYPE type) 3013 { 3014 ACPI_OBJECT arg[4]; 3015 ACPI_OBJECT_LIST arglist; 3016 ACPI_BUFFER buf; 3017 ACPI_STATUS status; 3018 3019 if (out_buf == NULL) 3020 return (AE_NO_MEMORY); 3021 3022 arg[0].Type = ACPI_TYPE_BUFFER; 3023 arg[0].Buffer.Length = ACPI_UUID_LENGTH; 3024 arg[0].Buffer.Pointer = __DECONST(uint8_t *, uuid); 3025 arg[1].Type = ACPI_TYPE_INTEGER; 3026 arg[1].Integer.Value = revision; 3027 arg[2].Type = ACPI_TYPE_INTEGER; 3028 arg[2].Integer.Value = function; 3029 if (package) { 3030 arg[3] = *package; 3031 } else { 3032 arg[3].Type = ACPI_TYPE_PACKAGE; 3033 arg[3].Package.Count = 0; 3034 arg[3].Package.Elements = NULL; 3035 } 3036 3037 arglist.Pointer = arg; 3038 arglist.Count = 4; 3039 buf.Pointer = NULL; 3040 buf.Length = ACPI_ALLOCATE_BUFFER; 3041 status = AcpiEvaluateObjectTyped(handle, "_DSM", &arglist, &buf, type); 3042 if (ACPI_FAILURE(status)) 3043 return (status); 3044 3045 KASSERT(ACPI_SUCCESS(status), ("Unexpected status")); 3046 3047 *out_buf = buf; 3048 return (status); 3049 } 3050 3051 ACPI_STATUS 3052 acpi_EvaluateOSC(ACPI_HANDLE handle, uint8_t *uuid, int revision, int count, 3053 uint32_t *caps_in, uint32_t *caps_out, bool query) 3054 { 3055 ACPI_OBJECT arg[4], *ret; 3056 ACPI_OBJECT_LIST arglist; 3057 ACPI_BUFFER buf; 3058 ACPI_STATUS status; 3059 3060 arglist.Pointer = arg; 3061 arglist.Count = 4; 3062 arg[0].Type = ACPI_TYPE_BUFFER; 3063 arg[0].Buffer.Length = ACPI_UUID_LENGTH; 3064 arg[0].Buffer.Pointer = uuid; 3065 arg[1].Type = ACPI_TYPE_INTEGER; 3066 arg[1].Integer.Value = revision; 3067 arg[2].Type = ACPI_TYPE_INTEGER; 3068 arg[2].Integer.Value = count; 3069 arg[3].Type = ACPI_TYPE_BUFFER; 3070 arg[3].Buffer.Length = count * sizeof(*caps_in); 3071 arg[3].Buffer.Pointer = (uint8_t *)caps_in; 3072 caps_in[0] = query ? 1 : 0; 3073 buf.Pointer = NULL; 3074 buf.Length = ACPI_ALLOCATE_BUFFER; 3075 status = AcpiEvaluateObjectTyped(handle, "_OSC", &arglist, &buf, 3076 ACPI_TYPE_BUFFER); 3077 if (ACPI_FAILURE(status)) 3078 return (status); 3079 if (caps_out != NULL) { 3080 ret = buf.Pointer; 3081 if (ret->Buffer.Length != count * sizeof(*caps_out)) { 3082 AcpiOsFree(buf.Pointer); 3083 return (AE_BUFFER_OVERFLOW); 3084 } 3085 bcopy(ret->Buffer.Pointer, caps_out, ret->Buffer.Length); 3086 } 3087 AcpiOsFree(buf.Pointer); 3088 return (status); 3089 } 3090 3091 /* 3092 * Set interrupt model. 3093 */ 3094 ACPI_STATUS 3095 acpi_SetIntrModel(int model) 3096 { 3097 3098 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model)); 3099 } 3100 3101 /* 3102 * Walk subtables of a table and call a callback routine for each 3103 * subtable. The caller should provide the first subtable and a 3104 * pointer to the end of the table. This can be used to walk tables 3105 * such as MADT and SRAT that use subtable entries. 3106 */ 3107 void 3108 acpi_walk_subtables(void *first, void *end, acpi_subtable_handler *handler, 3109 void *arg) 3110 { 3111 ACPI_SUBTABLE_HEADER *entry; 3112 3113 for (entry = first; (void *)entry < end; ) { 3114 /* Avoid an infinite loop if we hit a bogus entry. */ 3115 if (entry->Length < sizeof(ACPI_SUBTABLE_HEADER)) 3116 return; 3117 3118 handler(entry, arg); 3119 entry = ACPI_ADD_PTR(ACPI_SUBTABLE_HEADER, entry, entry->Length); 3120 } 3121 } 3122 3123 /* 3124 * DEPRECATED. This interface has serious deficiencies and will be 3125 * removed. 3126 * 3127 * Immediately enter the sleep state. In the old model, acpiconf(8) ran 3128 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this. 3129 */ 3130 ACPI_STATUS 3131 acpi_SetSleepState(struct acpi_softc *sc, int state) 3132 { 3133 static int once; 3134 3135 if (!once) { 3136 device_printf(sc->acpi_dev, 3137 "warning: acpi_SetSleepState() deprecated, need to update your software\n"); 3138 once = 1; 3139 } 3140 return (acpi_EnterSleepState(sc, state)); 3141 } 3142 3143 #if defined(__amd64__) || defined(__i386__) 3144 static void 3145 acpi_sleep_force_task(void *context) 3146 { 3147 struct acpi_softc *sc = (struct acpi_softc *)context; 3148 3149 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) 3150 device_printf(sc->acpi_dev, "force sleep state S%d failed\n", 3151 sc->acpi_next_sstate); 3152 } 3153 3154 static void 3155 acpi_sleep_force(void *arg) 3156 { 3157 struct acpi_softc *sc = (struct acpi_softc *)arg; 3158 3159 device_printf(sc->acpi_dev, 3160 "suspend request timed out, forcing sleep now\n"); 3161 /* 3162 * XXX Suspending from callout causes freezes in DEVICE_SUSPEND(). 3163 * Suspend from acpi_task thread instead. 3164 */ 3165 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3166 acpi_sleep_force_task, sc))) 3167 device_printf(sc->acpi_dev, "AcpiOsExecute() for sleeping failed\n"); 3168 } 3169 #endif 3170 3171 /* 3172 * Request that the system enter the given suspend state. All /dev/apm 3173 * devices and devd(8) will be notified. Userland then has a chance to 3174 * save state and acknowledge the request. The system sleeps once all 3175 * acks are in. 3176 */ 3177 int 3178 acpi_ReqSleepState(struct acpi_softc *sc, int state) 3179 { 3180 #if defined(__amd64__) || defined(__i386__) 3181 struct apm_clone_data *clone; 3182 ACPI_STATUS status; 3183 3184 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX) 3185 return (EINVAL); 3186 if (!acpi_sleep_states[state]) 3187 return (EOPNOTSUPP); 3188 3189 /* 3190 * If a reboot/shutdown/suspend request is already in progress or 3191 * suspend is blocked due to an upcoming shutdown, just return. 3192 */ 3193 if (rebooting || sc->acpi_next_sstate != 0 || suspend_blocked) { 3194 return (0); 3195 } 3196 3197 /* Wait until sleep is enabled. */ 3198 while (sc->acpi_sleep_disabled) { 3199 AcpiOsSleep(1000); 3200 } 3201 3202 ACPI_LOCK(acpi); 3203 3204 sc->acpi_next_sstate = state; 3205 3206 /* S5 (soft-off) should be entered directly with no waiting. */ 3207 if (state == ACPI_STATE_S5) { 3208 ACPI_UNLOCK(acpi); 3209 status = acpi_EnterSleepState(sc, state); 3210 return (ACPI_SUCCESS(status) ? 0 : ENXIO); 3211 } 3212 3213 /* Record the pending state and notify all apm devices. */ 3214 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) { 3215 clone->notify_status = APM_EV_NONE; 3216 if ((clone->flags & ACPI_EVF_DEVD) == 0) { 3217 selwakeuppri(&clone->sel_read, PZERO); 3218 KNOTE_LOCKED(&clone->sel_read.si_note, 0); 3219 } 3220 } 3221 3222 /* If devd(8) is not running, immediately enter the sleep state. */ 3223 if (!devctl_process_running()) { 3224 ACPI_UNLOCK(acpi); 3225 status = acpi_EnterSleepState(sc, state); 3226 return (ACPI_SUCCESS(status) ? 0 : ENXIO); 3227 } 3228 3229 /* 3230 * Set a timeout to fire if userland doesn't ack the suspend request 3231 * in time. This way we still eventually go to sleep if we were 3232 * overheating or running low on battery, even if userland is hung. 3233 * We cancel this timeout once all userland acks are in or the 3234 * suspend request is aborted. 3235 */ 3236 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc); 3237 ACPI_UNLOCK(acpi); 3238 3239 /* Now notify devd(8) also. */ 3240 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state); 3241 3242 return (0); 3243 #else 3244 /* This platform does not support acpi suspend/resume. */ 3245 return (EOPNOTSUPP); 3246 #endif 3247 } 3248 3249 /* 3250 * Acknowledge (or reject) a pending sleep state. The caller has 3251 * prepared for suspend and is now ready for it to proceed. If the 3252 * error argument is non-zero, it indicates suspend should be cancelled 3253 * and gives an errno value describing why. Once all votes are in, 3254 * we suspend the system. 3255 */ 3256 int 3257 acpi_AckSleepState(struct apm_clone_data *clone, int error) 3258 { 3259 #if defined(__amd64__) || defined(__i386__) 3260 struct acpi_softc *sc; 3261 int ret, sleeping; 3262 3263 /* If no pending sleep state, return an error. */ 3264 ACPI_LOCK(acpi); 3265 sc = clone->acpi_sc; 3266 if (sc->acpi_next_sstate == 0) { 3267 ACPI_UNLOCK(acpi); 3268 return (ENXIO); 3269 } 3270 3271 /* Caller wants to abort suspend process. */ 3272 if (error) { 3273 sc->acpi_next_sstate = 0; 3274 callout_stop(&sc->susp_force_to); 3275 device_printf(sc->acpi_dev, 3276 "listener on %s cancelled the pending suspend\n", 3277 devtoname(clone->cdev)); 3278 ACPI_UNLOCK(acpi); 3279 return (0); 3280 } 3281 3282 /* 3283 * Mark this device as acking the suspend request. Then, walk through 3284 * all devices, seeing if they agree yet. We only count devices that 3285 * are writable since read-only devices couldn't ack the request. 3286 */ 3287 sleeping = TRUE; 3288 clone->notify_status = APM_EV_ACKED; 3289 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) { 3290 if ((clone->flags & ACPI_EVF_WRITE) != 0 && 3291 clone->notify_status != APM_EV_ACKED) { 3292 sleeping = FALSE; 3293 break; 3294 } 3295 } 3296 3297 /* If all devices have voted "yes", we will suspend now. */ 3298 if (sleeping) 3299 callout_stop(&sc->susp_force_to); 3300 ACPI_UNLOCK(acpi); 3301 ret = 0; 3302 if (sleeping) { 3303 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) 3304 ret = ENODEV; 3305 } 3306 return (ret); 3307 #else 3308 /* This platform does not support acpi suspend/resume. */ 3309 return (EOPNOTSUPP); 3310 #endif 3311 } 3312 3313 static void 3314 acpi_sleep_enable(void *arg) 3315 { 3316 struct acpi_softc *sc = (struct acpi_softc *)arg; 3317 3318 ACPI_LOCK_ASSERT(acpi); 3319 3320 /* Reschedule if the system is not fully up and running. */ 3321 if (!AcpiGbl_SystemAwakeAndRunning) { 3322 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME); 3323 return; 3324 } 3325 3326 sc->acpi_sleep_disabled = FALSE; 3327 } 3328 3329 static ACPI_STATUS 3330 acpi_sleep_disable(struct acpi_softc *sc) 3331 { 3332 ACPI_STATUS status; 3333 3334 /* Fail if the system is not fully up and running. */ 3335 if (!AcpiGbl_SystemAwakeAndRunning) 3336 return (AE_ERROR); 3337 3338 ACPI_LOCK(acpi); 3339 status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK; 3340 sc->acpi_sleep_disabled = TRUE; 3341 ACPI_UNLOCK(acpi); 3342 3343 return (status); 3344 } 3345 3346 enum acpi_sleep_state { 3347 ACPI_SS_NONE, 3348 ACPI_SS_GPE_SET, 3349 ACPI_SS_DEV_SUSPEND, 3350 ACPI_SS_SLP_PREP, 3351 ACPI_SS_SLEPT, 3352 }; 3353 3354 /* 3355 * Enter the desired system sleep state. 3356 * 3357 * Currently we support S1-S5 but S4 is only S4BIOS 3358 */ 3359 static ACPI_STATUS 3360 acpi_EnterSleepState(struct acpi_softc *sc, int state) 3361 { 3362 register_t intr; 3363 ACPI_STATUS status; 3364 ACPI_EVENT_STATUS power_button_status; 3365 enum acpi_sleep_state slp_state; 3366 int sleep_result; 3367 3368 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 3369 3370 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX) 3371 return_ACPI_STATUS (AE_BAD_PARAMETER); 3372 if (!acpi_sleep_states[state]) { 3373 device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n", 3374 state); 3375 return (AE_SUPPORT); 3376 } 3377 3378 /* Re-entry once we're suspending is not allowed. */ 3379 status = acpi_sleep_disable(sc); 3380 if (ACPI_FAILURE(status)) { 3381 device_printf(sc->acpi_dev, 3382 "suspend request ignored (not ready yet)\n"); 3383 return (status); 3384 } 3385 3386 if (state == ACPI_STATE_S5) { 3387 /* 3388 * Shut down cleanly and power off. This will call us back through the 3389 * shutdown handlers. 3390 */ 3391 shutdown_nice(RB_POWEROFF); 3392 return_ACPI_STATUS (AE_OK); 3393 } 3394 3395 EVENTHANDLER_INVOKE(power_suspend_early); 3396 stop_all_proc(); 3397 suspend_all_fs(); 3398 EVENTHANDLER_INVOKE(power_suspend); 3399 3400 #ifdef EARLY_AP_STARTUP 3401 MPASS(mp_ncpus == 1 || smp_started); 3402 thread_lock(curthread); 3403 sched_bind(curthread, 0); 3404 thread_unlock(curthread); 3405 #else 3406 if (smp_started) { 3407 thread_lock(curthread); 3408 sched_bind(curthread, 0); 3409 thread_unlock(curthread); 3410 } 3411 #endif 3412 3413 /* 3414 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME 3415 */ 3416 bus_topo_lock(); 3417 3418 slp_state = ACPI_SS_NONE; 3419 3420 sc->acpi_sstate = state; 3421 3422 /* Enable any GPEs as appropriate and requested by the user. */ 3423 acpi_wake_prep_walk(state); 3424 slp_state = ACPI_SS_GPE_SET; 3425 3426 /* 3427 * Inform all devices that we are going to sleep. If at least one 3428 * device fails, DEVICE_SUSPEND() automatically resumes the tree. 3429 * 3430 * XXX Note that a better two-pass approach with a 'veto' pass 3431 * followed by a "real thing" pass would be better, but the current 3432 * bus interface does not provide for this. 3433 */ 3434 if (DEVICE_SUSPEND(root_bus) != 0) { 3435 device_printf(sc->acpi_dev, "device_suspend failed\n"); 3436 goto backout; 3437 } 3438 slp_state = ACPI_SS_DEV_SUSPEND; 3439 3440 status = AcpiEnterSleepStatePrep(state); 3441 if (ACPI_FAILURE(status)) { 3442 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 3443 AcpiFormatException(status)); 3444 goto backout; 3445 } 3446 slp_state = ACPI_SS_SLP_PREP; 3447 3448 if (sc->acpi_sleep_delay > 0) 3449 DELAY(sc->acpi_sleep_delay * 1000000); 3450 3451 suspendclock(); 3452 intr = intr_disable(); 3453 if (state != ACPI_STATE_S1) { 3454 sleep_result = acpi_sleep_machdep(sc, state); 3455 acpi_wakeup_machdep(sc, state, sleep_result, 0); 3456 3457 /* 3458 * XXX According to ACPI specification SCI_EN bit should be restored 3459 * by ACPI platform (BIOS, firmware) to its pre-sleep state. 3460 * Unfortunately some BIOSes fail to do that and that leads to 3461 * unexpected and serious consequences during wake up like a system 3462 * getting stuck in SMI handlers. 3463 * This hack is picked up from Linux, which claims that it follows 3464 * Windows behavior. 3465 */ 3466 if (sleep_result == 1 && state != ACPI_STATE_S4) 3467 AcpiWriteBitRegister(ACPI_BITREG_SCI_ENABLE, ACPI_ENABLE_EVENT); 3468 3469 if (sleep_result == 1 && state == ACPI_STATE_S3) { 3470 /* 3471 * Prevent mis-interpretation of the wakeup by power button 3472 * as a request for power off. 3473 * Ideally we should post an appropriate wakeup event, 3474 * perhaps using acpi_event_power_button_wake or alike. 3475 * 3476 * Clearing of power button status after wakeup is mandated 3477 * by ACPI specification in section "Fixed Power Button". 3478 * 3479 * XXX As of ACPICA 20121114 AcpiGetEventStatus provides 3480 * status as 0/1 corressponding to inactive/active despite 3481 * its type being ACPI_EVENT_STATUS. In other words, 3482 * we should not test for ACPI_EVENT_FLAG_SET for time being. 3483 */ 3484 if (ACPI_SUCCESS(AcpiGetEventStatus(ACPI_EVENT_POWER_BUTTON, 3485 &power_button_status)) && power_button_status != 0) { 3486 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 3487 device_printf(sc->acpi_dev, 3488 "cleared fixed power button status\n"); 3489 } 3490 } 3491 3492 intr_restore(intr); 3493 3494 /* call acpi_wakeup_machdep() again with interrupt enabled */ 3495 acpi_wakeup_machdep(sc, state, sleep_result, 1); 3496 3497 AcpiLeaveSleepStatePrep(state); 3498 3499 if (sleep_result == -1) 3500 goto backout; 3501 3502 /* Re-enable ACPI hardware on wakeup from sleep state 4. */ 3503 if (state == ACPI_STATE_S4) 3504 AcpiEnable(); 3505 } else { 3506 status = AcpiEnterSleepState(state); 3507 intr_restore(intr); 3508 AcpiLeaveSleepStatePrep(state); 3509 if (ACPI_FAILURE(status)) { 3510 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", 3511 AcpiFormatException(status)); 3512 goto backout; 3513 } 3514 } 3515 slp_state = ACPI_SS_SLEPT; 3516 3517 /* 3518 * Back out state according to how far along we got in the suspend 3519 * process. This handles both the error and success cases. 3520 */ 3521 backout: 3522 if (slp_state >= ACPI_SS_SLP_PREP) 3523 resumeclock(); 3524 if (slp_state >= ACPI_SS_GPE_SET) { 3525 acpi_wake_prep_walk(state); 3526 sc->acpi_sstate = ACPI_STATE_S0; 3527 } 3528 if (slp_state >= ACPI_SS_DEV_SUSPEND) 3529 DEVICE_RESUME(root_bus); 3530 if (slp_state >= ACPI_SS_SLP_PREP) 3531 AcpiLeaveSleepState(state); 3532 if (slp_state >= ACPI_SS_SLEPT) { 3533 #if defined(__i386__) || defined(__amd64__) 3534 /* NB: we are still using ACPI timecounter at this point. */ 3535 resume_TSC(); 3536 #endif 3537 acpi_resync_clock(sc); 3538 acpi_enable_fixed_events(sc); 3539 } 3540 sc->acpi_next_sstate = 0; 3541 3542 bus_topo_unlock(); 3543 3544 #ifdef EARLY_AP_STARTUP 3545 thread_lock(curthread); 3546 sched_unbind(curthread); 3547 thread_unlock(curthread); 3548 #else 3549 if (smp_started) { 3550 thread_lock(curthread); 3551 sched_unbind(curthread); 3552 thread_unlock(curthread); 3553 } 3554 #endif 3555 3556 resume_all_fs(); 3557 resume_all_proc(); 3558 3559 EVENTHANDLER_INVOKE(power_resume); 3560 3561 /* Allow another sleep request after a while. */ 3562 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME); 3563 3564 /* Run /etc/rc.resume after we are back. */ 3565 if (devctl_process_running()) 3566 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state); 3567 3568 return_ACPI_STATUS (status); 3569 } 3570 3571 static void 3572 acpi_resync_clock(struct acpi_softc *sc) 3573 { 3574 3575 /* 3576 * Warm up timecounter again and reset system clock. 3577 */ 3578 (void)timecounter->tc_get_timecount(timecounter); 3579 inittodr(time_second + sc->acpi_sleep_delay); 3580 } 3581 3582 /* Enable or disable the device's wake GPE. */ 3583 int 3584 acpi_wake_set_enable(device_t dev, int enable) 3585 { 3586 struct acpi_prw_data prw; 3587 ACPI_STATUS status; 3588 int flags; 3589 3590 /* Make sure the device supports waking the system and get the GPE. */ 3591 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0) 3592 return (ENXIO); 3593 3594 flags = acpi_get_flags(dev); 3595 if (enable) { 3596 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, 3597 ACPI_GPE_ENABLE); 3598 if (ACPI_FAILURE(status)) { 3599 device_printf(dev, "enable wake failed\n"); 3600 return (ENXIO); 3601 } 3602 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED); 3603 } else { 3604 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, 3605 ACPI_GPE_DISABLE); 3606 if (ACPI_FAILURE(status)) { 3607 device_printf(dev, "disable wake failed\n"); 3608 return (ENXIO); 3609 } 3610 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED); 3611 } 3612 3613 return (0); 3614 } 3615 3616 static int 3617 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate) 3618 { 3619 struct acpi_prw_data prw; 3620 device_t dev; 3621 3622 /* Check that this is a wake-capable device and get its GPE. */ 3623 if (acpi_parse_prw(handle, &prw) != 0) 3624 return (ENXIO); 3625 dev = acpi_get_device(handle); 3626 3627 /* 3628 * The destination sleep state must be less than (i.e., higher power) 3629 * or equal to the value specified by _PRW. If this GPE cannot be 3630 * enabled for the next sleep state, then disable it. If it can and 3631 * the user requested it be enabled, turn on any required power resources 3632 * and set _PSW. 3633 */ 3634 if (sstate > prw.lowest_wake) { 3635 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE); 3636 if (bootverbose) 3637 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n", 3638 acpi_name(handle), sstate); 3639 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) { 3640 acpi_pwr_wake_enable(handle, 1); 3641 acpi_SetInteger(handle, "_PSW", 1); 3642 if (bootverbose) 3643 device_printf(dev, "wake_prep enabled for %s (S%d)\n", 3644 acpi_name(handle), sstate); 3645 } 3646 3647 return (0); 3648 } 3649 3650 static int 3651 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate) 3652 { 3653 struct acpi_prw_data prw; 3654 device_t dev; 3655 3656 /* 3657 * Check that this is a wake-capable device and get its GPE. Return 3658 * now if the user didn't enable this device for wake. 3659 */ 3660 if (acpi_parse_prw(handle, &prw) != 0) 3661 return (ENXIO); 3662 dev = acpi_get_device(handle); 3663 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0) 3664 return (0); 3665 3666 /* 3667 * If this GPE couldn't be enabled for the previous sleep state, it was 3668 * disabled before going to sleep so re-enable it. If it was enabled, 3669 * clear _PSW and turn off any power resources it used. 3670 */ 3671 if (sstate > prw.lowest_wake) { 3672 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE); 3673 if (bootverbose) 3674 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle)); 3675 } else { 3676 acpi_SetInteger(handle, "_PSW", 0); 3677 acpi_pwr_wake_enable(handle, 0); 3678 if (bootverbose) 3679 device_printf(dev, "run_prep cleaned up for %s\n", 3680 acpi_name(handle)); 3681 } 3682 3683 return (0); 3684 } 3685 3686 static ACPI_STATUS 3687 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 3688 { 3689 int sstate; 3690 3691 /* If suspending, run the sleep prep function, otherwise wake. */ 3692 sstate = *(int *)context; 3693 if (AcpiGbl_SystemAwakeAndRunning) 3694 acpi_wake_sleep_prep(handle, sstate); 3695 else 3696 acpi_wake_run_prep(handle, sstate); 3697 return (AE_OK); 3698 } 3699 3700 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */ 3701 static int 3702 acpi_wake_prep_walk(int sstate) 3703 { 3704 ACPI_HANDLE sb_handle; 3705 3706 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) 3707 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100, 3708 acpi_wake_prep, NULL, &sstate, NULL); 3709 return (0); 3710 } 3711 3712 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */ 3713 static int 3714 acpi_wake_sysctl_walk(device_t dev) 3715 { 3716 int error, i, numdevs; 3717 device_t *devlist; 3718 device_t child; 3719 ACPI_STATUS status; 3720 3721 error = device_get_children(dev, &devlist, &numdevs); 3722 if (error != 0 || numdevs == 0) { 3723 if (numdevs == 0) 3724 free(devlist, M_TEMP); 3725 return (error); 3726 } 3727 for (i = 0; i < numdevs; i++) { 3728 child = devlist[i]; 3729 acpi_wake_sysctl_walk(child); 3730 if (!device_is_attached(child)) 3731 continue; 3732 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL); 3733 if (ACPI_SUCCESS(status)) { 3734 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child), 3735 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO, 3736 "wake", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, child, 0, 3737 acpi_wake_set_sysctl, "I", "Device set to wake the system"); 3738 } 3739 } 3740 free(devlist, M_TEMP); 3741 3742 return (0); 3743 } 3744 3745 /* Enable or disable wake from userland. */ 3746 static int 3747 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS) 3748 { 3749 int enable, error; 3750 device_t dev; 3751 3752 dev = (device_t)arg1; 3753 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0; 3754 3755 error = sysctl_handle_int(oidp, &enable, 0, req); 3756 if (error != 0 || req->newptr == NULL) 3757 return (error); 3758 if (enable != 0 && enable != 1) 3759 return (EINVAL); 3760 3761 return (acpi_wake_set_enable(dev, enable)); 3762 } 3763 3764 /* Parse a device's _PRW into a structure. */ 3765 int 3766 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw) 3767 { 3768 ACPI_STATUS status; 3769 ACPI_BUFFER prw_buffer; 3770 ACPI_OBJECT *res, *res2; 3771 int error, i, power_count; 3772 3773 if (h == NULL || prw == NULL) 3774 return (EINVAL); 3775 3776 /* 3777 * The _PRW object (7.2.9) is only required for devices that have the 3778 * ability to wake the system from a sleeping state. 3779 */ 3780 error = EINVAL; 3781 prw_buffer.Pointer = NULL; 3782 prw_buffer.Length = ACPI_ALLOCATE_BUFFER; 3783 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer); 3784 if (ACPI_FAILURE(status)) 3785 return (ENOENT); 3786 res = (ACPI_OBJECT *)prw_buffer.Pointer; 3787 if (res == NULL) 3788 return (ENOENT); 3789 if (!ACPI_PKG_VALID(res, 2)) 3790 goto out; 3791 3792 /* 3793 * Element 1 of the _PRW object: 3794 * The lowest power system sleeping state that can be entered while still 3795 * providing wake functionality. The sleeping state being entered must 3796 * be less than (i.e., higher power) or equal to this value. 3797 */ 3798 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0) 3799 goto out; 3800 3801 /* 3802 * Element 0 of the _PRW object: 3803 */ 3804 switch (res->Package.Elements[0].Type) { 3805 case ACPI_TYPE_INTEGER: 3806 /* 3807 * If the data type of this package element is numeric, then this 3808 * _PRW package element is the bit index in the GPEx_EN, in the 3809 * GPE blocks described in the FADT, of the enable bit that is 3810 * enabled for the wake event. 3811 */ 3812 prw->gpe_handle = NULL; 3813 prw->gpe_bit = res->Package.Elements[0].Integer.Value; 3814 error = 0; 3815 break; 3816 case ACPI_TYPE_PACKAGE: 3817 /* 3818 * If the data type of this package element is a package, then this 3819 * _PRW package element is itself a package containing two 3820 * elements. The first is an object reference to the GPE Block 3821 * device that contains the GPE that will be triggered by the wake 3822 * event. The second element is numeric and it contains the bit 3823 * index in the GPEx_EN, in the GPE Block referenced by the 3824 * first element in the package, of the enable bit that is enabled for 3825 * the wake event. 3826 * 3827 * For example, if this field is a package then it is of the form: 3828 * Package() {\_SB.PCI0.ISA.GPE, 2} 3829 */ 3830 res2 = &res->Package.Elements[0]; 3831 if (!ACPI_PKG_VALID(res2, 2)) 3832 goto out; 3833 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]); 3834 if (prw->gpe_handle == NULL) 3835 goto out; 3836 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0) 3837 goto out; 3838 error = 0; 3839 break; 3840 default: 3841 goto out; 3842 } 3843 3844 /* Elements 2 to N of the _PRW object are power resources. */ 3845 power_count = res->Package.Count - 2; 3846 if (power_count > ACPI_PRW_MAX_POWERRES) { 3847 printf("ACPI device %s has too many power resources\n", acpi_name(h)); 3848 power_count = 0; 3849 } 3850 prw->power_res_count = power_count; 3851 for (i = 0; i < power_count; i++) 3852 prw->power_res[i] = res->Package.Elements[i]; 3853 3854 out: 3855 if (prw_buffer.Pointer != NULL) 3856 AcpiOsFree(prw_buffer.Pointer); 3857 return (error); 3858 } 3859 3860 /* 3861 * ACPI Event Handlers 3862 */ 3863 3864 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */ 3865 3866 static void 3867 acpi_system_eventhandler_sleep(void *arg, int state) 3868 { 3869 struct acpi_softc *sc = (struct acpi_softc *)arg; 3870 int ret; 3871 3872 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 3873 3874 /* Check if button action is disabled or unknown. */ 3875 if (state == ACPI_STATE_UNKNOWN) 3876 return; 3877 3878 /* Request that the system prepare to enter the given suspend state. */ 3879 ret = acpi_ReqSleepState(sc, state); 3880 if (ret != 0) 3881 device_printf(sc->acpi_dev, 3882 "request to enter state S%d failed (err %d)\n", state, ret); 3883 3884 return_VOID; 3885 } 3886 3887 static void 3888 acpi_system_eventhandler_wakeup(void *arg, int state) 3889 { 3890 3891 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 3892 3893 /* Currently, nothing to do for wakeup. */ 3894 3895 return_VOID; 3896 } 3897 3898 /* 3899 * ACPICA Event Handlers (FixedEvent, also called from button notify handler) 3900 */ 3901 static void 3902 acpi_invoke_sleep_eventhandler(void *context) 3903 { 3904 3905 EVENTHANDLER_INVOKE(acpi_sleep_event, *(int *)context); 3906 } 3907 3908 static void 3909 acpi_invoke_wake_eventhandler(void *context) 3910 { 3911 3912 EVENTHANDLER_INVOKE(acpi_wakeup_event, *(int *)context); 3913 } 3914 3915 UINT32 3916 acpi_event_power_button_sleep(void *context) 3917 { 3918 struct acpi_softc *sc = (struct acpi_softc *)context; 3919 3920 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3921 3922 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3923 acpi_invoke_sleep_eventhandler, &sc->acpi_power_button_sx))) 3924 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3925 return_VALUE (ACPI_INTERRUPT_HANDLED); 3926 } 3927 3928 UINT32 3929 acpi_event_power_button_wake(void *context) 3930 { 3931 struct acpi_softc *sc = (struct acpi_softc *)context; 3932 3933 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3934 3935 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3936 acpi_invoke_wake_eventhandler, &sc->acpi_power_button_sx))) 3937 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3938 return_VALUE (ACPI_INTERRUPT_HANDLED); 3939 } 3940 3941 UINT32 3942 acpi_event_sleep_button_sleep(void *context) 3943 { 3944 struct acpi_softc *sc = (struct acpi_softc *)context; 3945 3946 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3947 3948 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3949 acpi_invoke_sleep_eventhandler, &sc->acpi_sleep_button_sx))) 3950 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3951 return_VALUE (ACPI_INTERRUPT_HANDLED); 3952 } 3953 3954 UINT32 3955 acpi_event_sleep_button_wake(void *context) 3956 { 3957 struct acpi_softc *sc = (struct acpi_softc *)context; 3958 3959 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3960 3961 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3962 acpi_invoke_wake_eventhandler, &sc->acpi_sleep_button_sx))) 3963 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3964 return_VALUE (ACPI_INTERRUPT_HANDLED); 3965 } 3966 3967 /* 3968 * XXX This static buffer is suboptimal. There is no locking so only 3969 * use this for single-threaded callers. 3970 */ 3971 char * 3972 acpi_name(ACPI_HANDLE handle) 3973 { 3974 ACPI_BUFFER buf; 3975 static char data[256]; 3976 3977 buf.Length = sizeof(data); 3978 buf.Pointer = data; 3979 3980 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf))) 3981 return (data); 3982 return ("(unknown)"); 3983 } 3984 3985 /* 3986 * Debugging/bug-avoidance. Avoid trying to fetch info on various 3987 * parts of the namespace. 3988 */ 3989 int 3990 acpi_avoid(ACPI_HANDLE handle) 3991 { 3992 char *cp, *env, *np; 3993 int len; 3994 3995 np = acpi_name(handle); 3996 if (*np == '\\') 3997 np++; 3998 if ((env = kern_getenv("debug.acpi.avoid")) == NULL) 3999 return (0); 4000 4001 /* Scan the avoid list checking for a match */ 4002 cp = env; 4003 for (;;) { 4004 while (*cp != 0 && isspace(*cp)) 4005 cp++; 4006 if (*cp == 0) 4007 break; 4008 len = 0; 4009 while (cp[len] != 0 && !isspace(cp[len])) 4010 len++; 4011 if (!strncmp(cp, np, len)) { 4012 freeenv(env); 4013 return(1); 4014 } 4015 cp += len; 4016 } 4017 freeenv(env); 4018 4019 return (0); 4020 } 4021 4022 /* 4023 * Debugging/bug-avoidance. Disable ACPI subsystem components. 4024 */ 4025 int 4026 acpi_disabled(char *subsys) 4027 { 4028 char *cp, *env; 4029 int len; 4030 4031 if ((env = kern_getenv("debug.acpi.disabled")) == NULL) 4032 return (0); 4033 if (strcmp(env, "all") == 0) { 4034 freeenv(env); 4035 return (1); 4036 } 4037 4038 /* Scan the disable list, checking for a match. */ 4039 cp = env; 4040 for (;;) { 4041 while (*cp != '\0' && isspace(*cp)) 4042 cp++; 4043 if (*cp == '\0') 4044 break; 4045 len = 0; 4046 while (cp[len] != '\0' && !isspace(cp[len])) 4047 len++; 4048 if (strncmp(cp, subsys, len) == 0) { 4049 freeenv(env); 4050 return (1); 4051 } 4052 cp += len; 4053 } 4054 freeenv(env); 4055 4056 return (0); 4057 } 4058 4059 static void 4060 acpi_lookup(void *arg, const char *name, device_t *dev) 4061 { 4062 ACPI_HANDLE handle; 4063 4064 if (*dev != NULL) 4065 return; 4066 4067 /* 4068 * Allow any handle name that is specified as an absolute path and 4069 * starts with '\'. We could restrict this to \_SB and friends, 4070 * but see acpi_probe_children() for notes on why we scan the entire 4071 * namespace for devices. 4072 * 4073 * XXX: The pathname argument to AcpiGetHandle() should be fixed to 4074 * be const. 4075 */ 4076 if (name[0] != '\\') 4077 return; 4078 if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, __DECONST(char *, name), 4079 &handle))) 4080 return; 4081 *dev = acpi_get_device(handle); 4082 } 4083 4084 /* 4085 * Control interface. 4086 * 4087 * We multiplex ioctls for all participating ACPI devices here. Individual 4088 * drivers wanting to be accessible via /dev/acpi should use the 4089 * register/deregister interface to make their handlers visible. 4090 */ 4091 struct acpi_ioctl_hook 4092 { 4093 TAILQ_ENTRY(acpi_ioctl_hook) link; 4094 u_long cmd; 4095 acpi_ioctl_fn fn; 4096 void *arg; 4097 }; 4098 4099 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks; 4100 static int acpi_ioctl_hooks_initted; 4101 4102 int 4103 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg) 4104 { 4105 struct acpi_ioctl_hook *hp; 4106 4107 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL) 4108 return (ENOMEM); 4109 hp->cmd = cmd; 4110 hp->fn = fn; 4111 hp->arg = arg; 4112 4113 ACPI_LOCK(acpi); 4114 if (acpi_ioctl_hooks_initted == 0) { 4115 TAILQ_INIT(&acpi_ioctl_hooks); 4116 acpi_ioctl_hooks_initted = 1; 4117 } 4118 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link); 4119 ACPI_UNLOCK(acpi); 4120 4121 return (0); 4122 } 4123 4124 void 4125 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn) 4126 { 4127 struct acpi_ioctl_hook *hp; 4128 4129 ACPI_LOCK(acpi); 4130 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) 4131 if (hp->cmd == cmd && hp->fn == fn) 4132 break; 4133 4134 if (hp != NULL) { 4135 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link); 4136 free(hp, M_ACPIDEV); 4137 } 4138 ACPI_UNLOCK(acpi); 4139 } 4140 4141 static int 4142 acpiopen(struct cdev *dev, int flag, int fmt, struct thread *td) 4143 { 4144 return (0); 4145 } 4146 4147 static int 4148 acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td) 4149 { 4150 return (0); 4151 } 4152 4153 static int 4154 acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 4155 { 4156 struct acpi_softc *sc; 4157 struct acpi_ioctl_hook *hp; 4158 int error, state; 4159 4160 error = 0; 4161 hp = NULL; 4162 sc = dev->si_drv1; 4163 4164 /* 4165 * Scan the list of registered ioctls, looking for handlers. 4166 */ 4167 ACPI_LOCK(acpi); 4168 if (acpi_ioctl_hooks_initted) 4169 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) { 4170 if (hp->cmd == cmd) 4171 break; 4172 } 4173 ACPI_UNLOCK(acpi); 4174 if (hp) 4175 return (hp->fn(cmd, addr, hp->arg)); 4176 4177 /* 4178 * Core ioctls are not permitted for non-writable user. 4179 * Currently, other ioctls just fetch information. 4180 * Not changing system behavior. 4181 */ 4182 if ((flag & FWRITE) == 0) 4183 return (EPERM); 4184 4185 /* Core system ioctls. */ 4186 switch (cmd) { 4187 case ACPIIO_REQSLPSTATE: 4188 state = *(int *)addr; 4189 if (state != ACPI_STATE_S5) 4190 return (acpi_ReqSleepState(sc, state)); 4191 device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n"); 4192 error = EOPNOTSUPP; 4193 break; 4194 case ACPIIO_ACKSLPSTATE: 4195 error = *(int *)addr; 4196 error = acpi_AckSleepState(sc->acpi_clone, error); 4197 break; 4198 case ACPIIO_SETSLPSTATE: /* DEPRECATED */ 4199 state = *(int *)addr; 4200 if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX) 4201 return (EINVAL); 4202 if (!acpi_sleep_states[state]) 4203 return (EOPNOTSUPP); 4204 if (ACPI_FAILURE(acpi_SetSleepState(sc, state))) 4205 error = ENXIO; 4206 break; 4207 default: 4208 error = ENXIO; 4209 break; 4210 } 4211 4212 return (error); 4213 } 4214 4215 static int 4216 acpi_sname2sstate(const char *sname) 4217 { 4218 int sstate; 4219 4220 if (toupper(sname[0]) == 'S') { 4221 sstate = sname[1] - '0'; 4222 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 && 4223 sname[2] == '\0') 4224 return (sstate); 4225 } else if (strcasecmp(sname, "NONE") == 0) 4226 return (ACPI_STATE_UNKNOWN); 4227 return (-1); 4228 } 4229 4230 static const char * 4231 acpi_sstate2sname(int sstate) 4232 { 4233 static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" }; 4234 4235 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5) 4236 return (snames[sstate]); 4237 else if (sstate == ACPI_STATE_UNKNOWN) 4238 return ("NONE"); 4239 return (NULL); 4240 } 4241 4242 static int 4243 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 4244 { 4245 int error; 4246 struct sbuf sb; 4247 UINT8 state; 4248 4249 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND); 4250 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++) 4251 if (acpi_sleep_states[state]) 4252 sbuf_printf(&sb, "%s ", acpi_sstate2sname(state)); 4253 sbuf_trim(&sb); 4254 sbuf_finish(&sb); 4255 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req); 4256 sbuf_delete(&sb); 4257 return (error); 4258 } 4259 4260 static int 4261 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 4262 { 4263 char sleep_state[10]; 4264 int error, new_state, old_state; 4265 4266 old_state = *(int *)oidp->oid_arg1; 4267 strlcpy(sleep_state, acpi_sstate2sname(old_state), sizeof(sleep_state)); 4268 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req); 4269 if (error == 0 && req->newptr != NULL) { 4270 new_state = acpi_sname2sstate(sleep_state); 4271 if (new_state < ACPI_STATE_S1) 4272 return (EINVAL); 4273 if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state]) 4274 return (EOPNOTSUPP); 4275 if (new_state != old_state) 4276 *(int *)oidp->oid_arg1 = new_state; 4277 } 4278 return (error); 4279 } 4280 4281 /* Inform devctl(4) when we receive a Notify. */ 4282 void 4283 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify) 4284 { 4285 char notify_buf[16]; 4286 ACPI_BUFFER handle_buf; 4287 ACPI_STATUS status; 4288 4289 if (subsystem == NULL) 4290 return; 4291 4292 handle_buf.Pointer = NULL; 4293 handle_buf.Length = ACPI_ALLOCATE_BUFFER; 4294 status = AcpiNsHandleToPathname(h, &handle_buf, FALSE); 4295 if (ACPI_FAILURE(status)) 4296 return; 4297 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify); 4298 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf); 4299 AcpiOsFree(handle_buf.Pointer); 4300 } 4301 4302 #ifdef ACPI_DEBUG 4303 /* 4304 * Support for parsing debug options from the kernel environment. 4305 * 4306 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers 4307 * by specifying the names of the bits in the debug.acpi.layer and 4308 * debug.acpi.level environment variables. Bits may be unset by 4309 * prefixing the bit name with !. 4310 */ 4311 struct debugtag 4312 { 4313 char *name; 4314 UINT32 value; 4315 }; 4316 4317 static struct debugtag dbg_layer[] = { 4318 {"ACPI_UTILITIES", ACPI_UTILITIES}, 4319 {"ACPI_HARDWARE", ACPI_HARDWARE}, 4320 {"ACPI_EVENTS", ACPI_EVENTS}, 4321 {"ACPI_TABLES", ACPI_TABLES}, 4322 {"ACPI_NAMESPACE", ACPI_NAMESPACE}, 4323 {"ACPI_PARSER", ACPI_PARSER}, 4324 {"ACPI_DISPATCHER", ACPI_DISPATCHER}, 4325 {"ACPI_EXECUTER", ACPI_EXECUTER}, 4326 {"ACPI_RESOURCES", ACPI_RESOURCES}, 4327 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER}, 4328 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES}, 4329 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER}, 4330 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS}, 4331 4332 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER}, 4333 {"ACPI_BATTERY", ACPI_BATTERY}, 4334 {"ACPI_BUS", ACPI_BUS}, 4335 {"ACPI_BUTTON", ACPI_BUTTON}, 4336 {"ACPI_EC", ACPI_EC}, 4337 {"ACPI_FAN", ACPI_FAN}, 4338 {"ACPI_POWERRES", ACPI_POWERRES}, 4339 {"ACPI_PROCESSOR", ACPI_PROCESSOR}, 4340 {"ACPI_THERMAL", ACPI_THERMAL}, 4341 {"ACPI_TIMER", ACPI_TIMER}, 4342 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS}, 4343 {NULL, 0} 4344 }; 4345 4346 static struct debugtag dbg_level[] = { 4347 {"ACPI_LV_INIT", ACPI_LV_INIT}, 4348 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT}, 4349 {"ACPI_LV_INFO", ACPI_LV_INFO}, 4350 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR}, 4351 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS}, 4352 4353 /* Trace verbosity level 1 [Standard Trace Level] */ 4354 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES}, 4355 {"ACPI_LV_PARSE", ACPI_LV_PARSE}, 4356 {"ACPI_LV_LOAD", ACPI_LV_LOAD}, 4357 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH}, 4358 {"ACPI_LV_EXEC", ACPI_LV_EXEC}, 4359 {"ACPI_LV_NAMES", ACPI_LV_NAMES}, 4360 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION}, 4361 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD}, 4362 {"ACPI_LV_TABLES", ACPI_LV_TABLES}, 4363 {"ACPI_LV_VALUES", ACPI_LV_VALUES}, 4364 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS}, 4365 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES}, 4366 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS}, 4367 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE}, 4368 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1}, 4369 4370 /* Trace verbosity level 2 [Function tracing and memory allocation] */ 4371 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS}, 4372 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS}, 4373 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS}, 4374 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2}, 4375 {"ACPI_LV_ALL", ACPI_LV_ALL}, 4376 4377 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */ 4378 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX}, 4379 {"ACPI_LV_THREADS", ACPI_LV_THREADS}, 4380 {"ACPI_LV_IO", ACPI_LV_IO}, 4381 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS}, 4382 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3}, 4383 4384 /* Exceptionally verbose output -- also used in the global "DebugLevel" */ 4385 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE}, 4386 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO}, 4387 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES}, 4388 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS}, 4389 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE}, 4390 {NULL, 0} 4391 }; 4392 4393 static void 4394 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag) 4395 { 4396 char *ep; 4397 int i, l; 4398 int set; 4399 4400 while (*cp) { 4401 if (isspace(*cp)) { 4402 cp++; 4403 continue; 4404 } 4405 ep = cp; 4406 while (*ep && !isspace(*ep)) 4407 ep++; 4408 if (*cp == '!') { 4409 set = 0; 4410 cp++; 4411 if (cp == ep) 4412 continue; 4413 } else { 4414 set = 1; 4415 } 4416 l = ep - cp; 4417 for (i = 0; tag[i].name != NULL; i++) { 4418 if (!strncmp(cp, tag[i].name, l)) { 4419 if (set) 4420 *flag |= tag[i].value; 4421 else 4422 *flag &= ~tag[i].value; 4423 } 4424 } 4425 cp = ep; 4426 } 4427 } 4428 4429 static void 4430 acpi_set_debugging(void *junk) 4431 { 4432 char *layer, *level; 4433 4434 if (cold) { 4435 AcpiDbgLayer = 0; 4436 AcpiDbgLevel = 0; 4437 } 4438 4439 layer = kern_getenv("debug.acpi.layer"); 4440 level = kern_getenv("debug.acpi.level"); 4441 if (layer == NULL && level == NULL) 4442 return; 4443 4444 printf("ACPI set debug"); 4445 if (layer != NULL) { 4446 if (strcmp("NONE", layer) != 0) 4447 printf(" layer '%s'", layer); 4448 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer); 4449 freeenv(layer); 4450 } 4451 if (level != NULL) { 4452 if (strcmp("NONE", level) != 0) 4453 printf(" level '%s'", level); 4454 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel); 4455 freeenv(level); 4456 } 4457 printf("\n"); 4458 } 4459 4460 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging, 4461 NULL); 4462 4463 static int 4464 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS) 4465 { 4466 int error, *dbg; 4467 struct debugtag *tag; 4468 struct sbuf sb; 4469 char temp[128]; 4470 4471 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL) 4472 return (ENOMEM); 4473 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) { 4474 tag = &dbg_layer[0]; 4475 dbg = &AcpiDbgLayer; 4476 } else { 4477 tag = &dbg_level[0]; 4478 dbg = &AcpiDbgLevel; 4479 } 4480 4481 /* Get old values if this is a get request. */ 4482 ACPI_SERIAL_BEGIN(acpi); 4483 if (*dbg == 0) { 4484 sbuf_cpy(&sb, "NONE"); 4485 } else if (req->newptr == NULL) { 4486 for (; tag->name != NULL; tag++) { 4487 if ((*dbg & tag->value) == tag->value) 4488 sbuf_printf(&sb, "%s ", tag->name); 4489 } 4490 } 4491 sbuf_trim(&sb); 4492 sbuf_finish(&sb); 4493 strlcpy(temp, sbuf_data(&sb), sizeof(temp)); 4494 sbuf_delete(&sb); 4495 4496 error = sysctl_handle_string(oidp, temp, sizeof(temp), req); 4497 4498 /* Check for error or no change */ 4499 if (error == 0 && req->newptr != NULL) { 4500 *dbg = 0; 4501 kern_setenv((char *)oidp->oid_arg1, temp); 4502 acpi_set_debugging(NULL); 4503 } 4504 ACPI_SERIAL_END(acpi); 4505 4506 return (error); 4507 } 4508 4509 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, 4510 CTLFLAG_RW | CTLTYPE_STRING | CTLFLAG_MPSAFE, "debug.acpi.layer", 0, 4511 acpi_debug_sysctl, "A", 4512 ""); 4513 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, 4514 CTLFLAG_RW | CTLTYPE_STRING | CTLFLAG_MPSAFE, "debug.acpi.level", 0, 4515 acpi_debug_sysctl, "A", 4516 ""); 4517 #endif /* ACPI_DEBUG */ 4518 4519 static int 4520 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS) 4521 { 4522 int error; 4523 int old; 4524 4525 old = acpi_debug_objects; 4526 error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req); 4527 if (error != 0 || req->newptr == NULL) 4528 return (error); 4529 if (old == acpi_debug_objects || (old && acpi_debug_objects)) 4530 return (0); 4531 4532 ACPI_SERIAL_BEGIN(acpi); 4533 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE; 4534 ACPI_SERIAL_END(acpi); 4535 4536 return (0); 4537 } 4538 4539 static int 4540 acpi_parse_interfaces(char *str, struct acpi_interface *iface) 4541 { 4542 char *p; 4543 size_t len; 4544 int i, j; 4545 4546 p = str; 4547 while (isspace(*p) || *p == ',') 4548 p++; 4549 len = strlen(p); 4550 if (len == 0) 4551 return (0); 4552 p = strdup(p, M_TEMP); 4553 for (i = 0; i < len; i++) 4554 if (p[i] == ',') 4555 p[i] = '\0'; 4556 i = j = 0; 4557 while (i < len) 4558 if (isspace(p[i]) || p[i] == '\0') 4559 i++; 4560 else { 4561 i += strlen(p + i) + 1; 4562 j++; 4563 } 4564 if (j == 0) { 4565 free(p, M_TEMP); 4566 return (0); 4567 } 4568 iface->data = malloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK); 4569 iface->num = j; 4570 i = j = 0; 4571 while (i < len) 4572 if (isspace(p[i]) || p[i] == '\0') 4573 i++; 4574 else { 4575 iface->data[j] = p + i; 4576 i += strlen(p + i) + 1; 4577 j++; 4578 } 4579 4580 return (j); 4581 } 4582 4583 static void 4584 acpi_free_interfaces(struct acpi_interface *iface) 4585 { 4586 4587 free(iface->data[0], M_TEMP); 4588 free(iface->data, M_TEMP); 4589 } 4590 4591 static void 4592 acpi_reset_interfaces(device_t dev) 4593 { 4594 struct acpi_interface list; 4595 ACPI_STATUS status; 4596 int i; 4597 4598 if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) { 4599 for (i = 0; i < list.num; i++) { 4600 status = AcpiInstallInterface(list.data[i]); 4601 if (ACPI_FAILURE(status)) 4602 device_printf(dev, 4603 "failed to install _OSI(\"%s\"): %s\n", 4604 list.data[i], AcpiFormatException(status)); 4605 else if (bootverbose) 4606 device_printf(dev, "installed _OSI(\"%s\")\n", 4607 list.data[i]); 4608 } 4609 acpi_free_interfaces(&list); 4610 } 4611 if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) { 4612 for (i = 0; i < list.num; i++) { 4613 status = AcpiRemoveInterface(list.data[i]); 4614 if (ACPI_FAILURE(status)) 4615 device_printf(dev, 4616 "failed to remove _OSI(\"%s\"): %s\n", 4617 list.data[i], AcpiFormatException(status)); 4618 else if (bootverbose) 4619 device_printf(dev, "removed _OSI(\"%s\")\n", 4620 list.data[i]); 4621 } 4622 acpi_free_interfaces(&list); 4623 } 4624 } 4625 4626 static int 4627 acpi_pm_func(u_long cmd, void *arg, ...) 4628 { 4629 int state, acpi_state; 4630 int error; 4631 struct acpi_softc *sc; 4632 va_list ap; 4633 4634 error = 0; 4635 switch (cmd) { 4636 case POWER_CMD_SUSPEND: 4637 sc = (struct acpi_softc *)arg; 4638 if (sc == NULL) { 4639 error = EINVAL; 4640 goto out; 4641 } 4642 4643 va_start(ap, arg); 4644 state = va_arg(ap, int); 4645 va_end(ap); 4646 4647 switch (state) { 4648 case POWER_SLEEP_STATE_STANDBY: 4649 acpi_state = sc->acpi_standby_sx; 4650 break; 4651 case POWER_SLEEP_STATE_SUSPEND: 4652 acpi_state = sc->acpi_suspend_sx; 4653 break; 4654 case POWER_SLEEP_STATE_HIBERNATE: 4655 acpi_state = ACPI_STATE_S4; 4656 break; 4657 default: 4658 error = EINVAL; 4659 goto out; 4660 } 4661 4662 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state))) 4663 error = ENXIO; 4664 break; 4665 default: 4666 error = EINVAL; 4667 goto out; 4668 } 4669 4670 out: 4671 return (error); 4672 } 4673 4674 static void 4675 acpi_pm_register(void *arg) 4676 { 4677 if (!cold || resource_disabled("acpi", 0)) 4678 return; 4679 4680 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL); 4681 } 4682 4683 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, NULL); 4684