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(device_t bus, device_t dev); 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 static devclass_t acpi_devclass; 253 EARLY_DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0, 254 BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE); 255 MODULE_VERSION(acpi, 1); 256 257 ACPI_SERIAL_DECL(acpi, "ACPI root bus"); 258 259 /* Local pools for managing system resources for ACPI child devices. */ 260 static struct rman acpi_rman_io, acpi_rman_mem; 261 262 #define ACPI_MINIMUM_AWAKETIME 5 263 264 /* Holds the description of the acpi0 device. */ 265 static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2]; 266 267 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 268 "ACPI debugging"); 269 static char acpi_ca_version[12]; 270 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD, 271 acpi_ca_version, 0, "Version of Intel ACPI-CA"); 272 273 /* 274 * Allow overriding _OSI methods. 275 */ 276 static char acpi_install_interface[256]; 277 TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface, 278 sizeof(acpi_install_interface)); 279 static char acpi_remove_interface[256]; 280 TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface, 281 sizeof(acpi_remove_interface)); 282 283 /* Allow users to dump Debug objects without ACPI debugger. */ 284 static int acpi_debug_objects; 285 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects); 286 SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects, 287 CTLFLAG_RW | CTLTYPE_INT | CTLFLAG_MPSAFE, NULL, 0, 288 acpi_debug_objects_sysctl, "I", 289 "Enable Debug objects"); 290 291 /* Allow the interpreter to ignore common mistakes in BIOS. */ 292 static int acpi_interpreter_slack = 1; 293 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack); 294 SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RDTUN, 295 &acpi_interpreter_slack, 1, "Turn on interpreter slack mode."); 296 297 /* Ignore register widths set by FADT and use default widths instead. */ 298 static int acpi_ignore_reg_width = 1; 299 TUNABLE_INT("debug.acpi.default_register_width", &acpi_ignore_reg_width); 300 SYSCTL_INT(_debug_acpi, OID_AUTO, default_register_width, CTLFLAG_RDTUN, 301 &acpi_ignore_reg_width, 1, "Ignore register widths set by FADT"); 302 303 /* Allow users to override quirks. */ 304 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks); 305 306 int acpi_susp_bounce; 307 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW, 308 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices."); 309 310 /* 311 * ACPI standard UUID for Device Specific Data Package 312 * "Device Properties UUID for _DSD" Rev. 2.0 313 */ 314 static const struct uuid acpi_dsd_uuid = { 315 0xdaffd814, 0x6eba, 0x4d8c, 0x8a, 0x91, 316 { 0xbc, 0x9b, 0xbf, 0x4a, 0xa3, 0x01 } 317 }; 318 319 /* 320 * ACPI can only be loaded as a module by the loader; activating it after 321 * system bootstrap time is not useful, and can be fatal to the system. 322 * It also cannot be unloaded, since the entire system bus hierarchy hangs 323 * off it. 324 */ 325 static int 326 acpi_modevent(struct module *mod, int event, void *junk) 327 { 328 switch (event) { 329 case MOD_LOAD: 330 if (!cold) { 331 printf("The ACPI driver cannot be loaded after boot.\n"); 332 return (EPERM); 333 } 334 break; 335 case MOD_UNLOAD: 336 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI) 337 return (EBUSY); 338 break; 339 default: 340 break; 341 } 342 return (0); 343 } 344 345 /* 346 * Perform early initialization. 347 */ 348 ACPI_STATUS 349 acpi_Startup(void) 350 { 351 static int started = 0; 352 ACPI_STATUS status; 353 int val; 354 355 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 356 357 /* Only run the startup code once. The MADT driver also calls this. */ 358 if (started) 359 return_VALUE (AE_OK); 360 started = 1; 361 362 /* 363 * Initialize the ACPICA subsystem. 364 */ 365 if (ACPI_FAILURE(status = AcpiInitializeSubsystem())) { 366 printf("ACPI: Could not initialize Subsystem: %s\n", 367 AcpiFormatException(status)); 368 return_VALUE (status); 369 } 370 371 /* 372 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing 373 * if more tables exist. 374 */ 375 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) { 376 printf("ACPI: Table initialisation failed: %s\n", 377 AcpiFormatException(status)); 378 return_VALUE (status); 379 } 380 381 /* Set up any quirks we have for this system. */ 382 if (acpi_quirks == ACPI_Q_OK) 383 acpi_table_quirks(&acpi_quirks); 384 385 /* If the user manually set the disabled hint to 0, force-enable ACPI. */ 386 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0) 387 acpi_quirks &= ~ACPI_Q_BROKEN; 388 if (acpi_quirks & ACPI_Q_BROKEN) { 389 printf("ACPI disabled by blacklist. Contact your BIOS vendor.\n"); 390 status = AE_SUPPORT; 391 } 392 393 return_VALUE (status); 394 } 395 396 /* 397 * Detect ACPI and perform early initialisation. 398 */ 399 int 400 acpi_identify(void) 401 { 402 ACPI_TABLE_RSDP *rsdp; 403 ACPI_TABLE_HEADER *rsdt; 404 ACPI_PHYSICAL_ADDRESS paddr; 405 struct sbuf sb; 406 407 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 408 409 if (!cold) 410 return (ENXIO); 411 412 /* Check that we haven't been disabled with a hint. */ 413 if (resource_disabled("acpi", 0)) 414 return (ENXIO); 415 416 /* Check for other PM systems. */ 417 if (power_pm_get_type() != POWER_PM_TYPE_NONE && 418 power_pm_get_type() != POWER_PM_TYPE_ACPI) { 419 printf("ACPI identify failed, other PM system enabled.\n"); 420 return (ENXIO); 421 } 422 423 /* Initialize root tables. */ 424 if (ACPI_FAILURE(acpi_Startup())) { 425 printf("ACPI: Try disabling either ACPI or apic support.\n"); 426 return (ENXIO); 427 } 428 429 if ((paddr = AcpiOsGetRootPointer()) == 0 || 430 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL) 431 return (ENXIO); 432 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0) 433 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress; 434 else 435 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress; 436 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 437 438 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL) 439 return (ENXIO); 440 sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN); 441 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE); 442 sbuf_trim(&sb); 443 sbuf_putc(&sb, ' '); 444 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE); 445 sbuf_trim(&sb); 446 sbuf_finish(&sb); 447 sbuf_delete(&sb); 448 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 449 450 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION); 451 452 return (0); 453 } 454 455 /* 456 * Fetch some descriptive data from ACPI to put in our attach message. 457 */ 458 static int 459 acpi_probe(device_t dev) 460 { 461 462 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 463 464 device_set_desc(dev, acpi_desc); 465 466 return_VALUE (BUS_PROBE_NOWILDCARD); 467 } 468 469 static int 470 acpi_attach(device_t dev) 471 { 472 struct acpi_softc *sc; 473 ACPI_STATUS status; 474 int error, state; 475 UINT32 flags; 476 UINT8 TypeA, TypeB; 477 char *env; 478 479 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 480 481 sc = device_get_softc(dev); 482 sc->acpi_dev = dev; 483 callout_init(&sc->susp_force_to, 1); 484 485 error = ENXIO; 486 487 /* Initialize resource manager. */ 488 acpi_rman_io.rm_type = RMAN_ARRAY; 489 acpi_rman_io.rm_start = 0; 490 acpi_rman_io.rm_end = 0xffff; 491 acpi_rman_io.rm_descr = "ACPI I/O ports"; 492 if (rman_init(&acpi_rman_io) != 0) 493 panic("acpi rman_init IO ports failed"); 494 acpi_rman_mem.rm_type = RMAN_ARRAY; 495 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses"; 496 if (rman_init(&acpi_rman_mem) != 0) 497 panic("acpi rman_init memory failed"); 498 499 /* Initialise the ACPI mutex */ 500 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF); 501 502 /* 503 * Set the globals from our tunables. This is needed because ACPI-CA 504 * uses UINT8 for some values and we have no tunable_byte. 505 */ 506 AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE; 507 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE; 508 AcpiGbl_UseDefaultRegisterWidths = acpi_ignore_reg_width ? TRUE : FALSE; 509 510 #ifndef ACPI_DEBUG 511 /* 512 * Disable all debugging layers and levels. 513 */ 514 AcpiDbgLayer = 0; 515 AcpiDbgLevel = 0; 516 #endif 517 518 /* Override OS interfaces if the user requested. */ 519 acpi_reset_interfaces(dev); 520 521 /* Load ACPI name space. */ 522 status = AcpiLoadTables(); 523 if (ACPI_FAILURE(status)) { 524 device_printf(dev, "Could not load Namespace: %s\n", 525 AcpiFormatException(status)); 526 goto out; 527 } 528 529 /* Handle MCFG table if present. */ 530 acpi_enable_pcie(); 531 532 /* 533 * Note that some systems (specifically, those with namespace evaluation 534 * issues that require the avoidance of parts of the namespace) must 535 * avoid running _INI and _STA on everything, as well as dodging the final 536 * object init pass. 537 * 538 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT). 539 * 540 * XXX We should arrange for the object init pass after we have attached 541 * all our child devices, but on many systems it works here. 542 */ 543 flags = 0; 544 if (testenv("debug.acpi.avoid")) 545 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; 546 547 /* Bring the hardware and basic handlers online. */ 548 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) { 549 device_printf(dev, "Could not enable ACPI: %s\n", 550 AcpiFormatException(status)); 551 goto out; 552 } 553 554 /* 555 * Call the ECDT probe function to provide EC functionality before 556 * the namespace has been evaluated. 557 * 558 * XXX This happens before the sysresource devices have been probed and 559 * attached so its resources come from nexus0. In practice, this isn't 560 * a problem but should be addressed eventually. 561 */ 562 acpi_ec_ecdt_probe(dev); 563 564 /* Bring device objects and regions online. */ 565 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) { 566 device_printf(dev, "Could not initialize ACPI objects: %s\n", 567 AcpiFormatException(status)); 568 goto out; 569 } 570 571 /* 572 * Setup our sysctl tree. 573 * 574 * XXX: This doesn't check to make sure that none of these fail. 575 */ 576 sysctl_ctx_init(&sc->acpi_sysctl_ctx); 577 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx, 578 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, device_get_name(dev), 579 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); 580 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 581 OID_AUTO, "supported_sleep_state", 582 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, 583 0, 0, acpi_supported_sleep_state_sysctl, "A", 584 "List supported ACPI sleep states."); 585 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 586 OID_AUTO, "power_button_state", 587 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, 588 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", 589 "Power button ACPI sleep state."); 590 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 591 OID_AUTO, "sleep_button_state", 592 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, 593 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", 594 "Sleep button ACPI sleep state."); 595 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 596 OID_AUTO, "lid_switch_state", 597 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, 598 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", 599 "Lid ACPI sleep state. Set to S3 if you want to suspend your laptop when close the Lid."); 600 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 601 OID_AUTO, "standby_state", 602 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, 603 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", ""); 604 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 605 OID_AUTO, "suspend_state", 606 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, 607 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", ""); 608 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 609 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0, 610 "sleep delay in seconds"); 611 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 612 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode"); 613 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 614 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode"); 615 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 616 OID_AUTO, "disable_on_reboot", CTLFLAG_RW, 617 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system"); 618 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 619 OID_AUTO, "handle_reboot", CTLFLAG_RW, 620 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot"); 621 622 /* 623 * Default to 1 second before sleeping to give some machines time to 624 * stabilize. 625 */ 626 sc->acpi_sleep_delay = 1; 627 if (bootverbose) 628 sc->acpi_verbose = 1; 629 if ((env = kern_getenv("hw.acpi.verbose")) != NULL) { 630 if (strcmp(env, "0") != 0) 631 sc->acpi_verbose = 1; 632 freeenv(env); 633 } 634 635 /* Only enable reboot by default if the FADT says it is available. */ 636 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) 637 sc->acpi_handle_reboot = 1; 638 639 #if !ACPI_REDUCED_HARDWARE 640 /* Only enable S4BIOS by default if the FACS says it is available. */ 641 if (AcpiGbl_FACS != NULL && AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT) 642 sc->acpi_s4bios = 1; 643 #endif 644 645 /* Probe all supported sleep states. */ 646 acpi_sleep_states[ACPI_STATE_S0] = TRUE; 647 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++) 648 if (ACPI_SUCCESS(AcpiEvaluateObject(ACPI_ROOT_OBJECT, 649 __DECONST(char *, AcpiGbl_SleepStateNames[state]), NULL, NULL)) && 650 ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) 651 acpi_sleep_states[state] = TRUE; 652 653 /* 654 * Dispatch the default sleep state to devices. The lid switch is set 655 * to UNKNOWN by default to avoid surprising users. 656 */ 657 sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ? 658 ACPI_STATE_S5 : ACPI_STATE_UNKNOWN; 659 sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN; 660 sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ? 661 ACPI_STATE_S1 : ACPI_STATE_UNKNOWN; 662 sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ? 663 ACPI_STATE_S3 : ACPI_STATE_UNKNOWN; 664 665 /* Pick the first valid sleep state for the sleep button default. */ 666 sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN; 667 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++) 668 if (acpi_sleep_states[state]) { 669 sc->acpi_sleep_button_sx = state; 670 break; 671 } 672 673 acpi_enable_fixed_events(sc); 674 675 /* 676 * Scan the namespace and attach/initialise children. 677 */ 678 679 /* Register our shutdown handler. */ 680 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc, 681 SHUTDOWN_PRI_LAST); 682 683 /* 684 * Register our acpi event handlers. 685 * XXX should be configurable eg. via userland policy manager. 686 */ 687 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep, 688 sc, ACPI_EVENT_PRI_LAST); 689 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup, 690 sc, ACPI_EVENT_PRI_LAST); 691 692 /* Flag our initial states. */ 693 sc->acpi_enabled = TRUE; 694 sc->acpi_sstate = ACPI_STATE_S0; 695 sc->acpi_sleep_disabled = TRUE; 696 697 /* Create the control device */ 698 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0664, 699 "acpi"); 700 sc->acpi_dev_t->si_drv1 = sc; 701 702 if ((error = acpi_machdep_init(dev))) 703 goto out; 704 705 /* Register ACPI again to pass the correct argument of pm_func. */ 706 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc); 707 708 acpi_platform_osc(dev); 709 710 if (!acpi_disabled("bus")) { 711 EVENTHANDLER_REGISTER(dev_lookup, acpi_lookup, NULL, 1000); 712 acpi_probe_children(dev); 713 } 714 715 /* Update all GPEs and enable runtime GPEs. */ 716 status = AcpiUpdateAllGpes(); 717 if (ACPI_FAILURE(status)) 718 device_printf(dev, "Could not update all GPEs: %s\n", 719 AcpiFormatException(status)); 720 721 /* Allow sleep request after a while. */ 722 callout_init_mtx(&acpi_sleep_timer, &acpi_mutex, 0); 723 callout_reset(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME, 724 acpi_sleep_enable, sc); 725 726 error = 0; 727 728 out: 729 return_VALUE (error); 730 } 731 732 static void 733 acpi_set_power_children(device_t dev, int state) 734 { 735 device_t child; 736 device_t *devlist; 737 int dstate, i, numdevs; 738 739 if (device_get_children(dev, &devlist, &numdevs) != 0) 740 return; 741 742 /* 743 * Retrieve and set D-state for the sleep state if _SxD is present. 744 * Skip children who aren't attached since they are handled separately. 745 */ 746 for (i = 0; i < numdevs; i++) { 747 child = devlist[i]; 748 dstate = state; 749 if (device_is_attached(child) && 750 acpi_device_pwr_for_sleep(dev, child, &dstate) == 0) 751 acpi_set_powerstate(child, dstate); 752 } 753 free(devlist, M_TEMP); 754 } 755 756 static int 757 acpi_suspend(device_t dev) 758 { 759 int error; 760 761 bus_topo_assert(); 762 763 error = bus_generic_suspend(dev); 764 if (error == 0) 765 acpi_set_power_children(dev, ACPI_STATE_D3); 766 767 return (error); 768 } 769 770 static int 771 acpi_resume(device_t dev) 772 { 773 774 bus_topo_assert(); 775 776 acpi_set_power_children(dev, ACPI_STATE_D0); 777 778 return (bus_generic_resume(dev)); 779 } 780 781 static int 782 acpi_shutdown(device_t dev) 783 { 784 785 bus_topo_assert(); 786 787 /* Allow children to shutdown first. */ 788 bus_generic_shutdown(dev); 789 790 /* 791 * Enable any GPEs that are able to power-on the system (i.e., RTC). 792 * Also, disable any that are not valid for this state (most). 793 */ 794 acpi_wake_prep_walk(ACPI_STATE_S5); 795 796 return (0); 797 } 798 799 /* 800 * Handle a new device being added 801 */ 802 static device_t 803 acpi_add_child(device_t bus, u_int order, const char *name, int unit) 804 { 805 struct acpi_device *ad; 806 device_t child; 807 808 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL) 809 return (NULL); 810 811 resource_list_init(&ad->ad_rl); 812 813 child = device_add_child_ordered(bus, order, name, unit); 814 if (child != NULL) 815 device_set_ivars(child, ad); 816 else 817 free(ad, M_ACPIDEV); 818 return (child); 819 } 820 821 static int 822 acpi_print_child(device_t bus, device_t child) 823 { 824 struct acpi_device *adev = device_get_ivars(child); 825 struct resource_list *rl = &adev->ad_rl; 826 int retval = 0; 827 828 retval += bus_print_child_header(bus, child); 829 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#jx"); 830 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#jx"); 831 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd"); 832 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%jd"); 833 if (device_get_flags(child)) 834 retval += printf(" flags %#x", device_get_flags(child)); 835 retval += bus_print_child_domain(bus, child); 836 retval += bus_print_child_footer(bus, child); 837 838 return (retval); 839 } 840 841 /* 842 * If this device is an ACPI child but no one claimed it, attempt 843 * to power it off. We'll power it back up when a driver is added. 844 * 845 * XXX Disabled for now since many necessary devices (like fdc and 846 * ATA) don't claim the devices we created for them but still expect 847 * them to be powered up. 848 */ 849 static void 850 acpi_probe_nomatch(device_t bus, device_t child) 851 { 852 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER 853 acpi_set_powerstate(child, ACPI_STATE_D3); 854 #endif 855 } 856 857 /* 858 * If a new driver has a chance to probe a child, first power it up. 859 * 860 * XXX Disabled for now (see acpi_probe_nomatch for details). 861 */ 862 static void 863 acpi_driver_added(device_t dev, driver_t *driver) 864 { 865 device_t child, *devlist; 866 int i, numdevs; 867 868 DEVICE_IDENTIFY(driver, dev); 869 if (device_get_children(dev, &devlist, &numdevs)) 870 return; 871 for (i = 0; i < numdevs; i++) { 872 child = devlist[i]; 873 if (device_get_state(child) == DS_NOTPRESENT) { 874 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER 875 acpi_set_powerstate(child, ACPI_STATE_D0); 876 if (device_probe_and_attach(child) != 0) 877 acpi_set_powerstate(child, ACPI_STATE_D3); 878 #else 879 device_probe_and_attach(child); 880 #endif 881 } 882 } 883 free(devlist, M_TEMP); 884 } 885 886 /* Location hint for devctl(8) */ 887 static int 888 acpi_child_location_method(device_t cbdev, device_t child, struct sbuf *sb) 889 { 890 struct acpi_device *dinfo = device_get_ivars(child); 891 int pxm; 892 893 if (dinfo->ad_handle) { 894 sbuf_printf(sb, "handle=%s", acpi_name(dinfo->ad_handle)); 895 if (ACPI_SUCCESS(acpi_GetInteger(dinfo->ad_handle, "_PXM", &pxm))) { 896 sbuf_printf(sb, " _PXM=%d", pxm); 897 } 898 } 899 return (0); 900 } 901 902 /* PnP information for devctl(8) */ 903 int 904 acpi_pnpinfo(ACPI_HANDLE handle, struct sbuf *sb) 905 { 906 ACPI_DEVICE_INFO *adinfo; 907 908 if (ACPI_FAILURE(AcpiGetObjectInfo(handle, &adinfo))) { 909 sbuf_printf(sb, "unknown"); 910 return (0); 911 } 912 913 sbuf_printf(sb, "_HID=%s _UID=%lu _CID=%s", 914 (adinfo->Valid & ACPI_VALID_HID) ? 915 adinfo->HardwareId.String : "none", 916 (adinfo->Valid & ACPI_VALID_UID) ? 917 strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL, 918 ((adinfo->Valid & ACPI_VALID_CID) && 919 adinfo->CompatibleIdList.Count > 0) ? 920 adinfo->CompatibleIdList.Ids[0].String : "none"); 921 AcpiOsFree(adinfo); 922 923 return (0); 924 } 925 926 static int 927 acpi_child_pnpinfo_method(device_t cbdev, device_t child, struct sbuf *sb) 928 { 929 struct acpi_device *dinfo = device_get_ivars(child); 930 931 return (acpi_pnpinfo(dinfo->ad_handle, sb)); 932 } 933 934 /* 935 * Note: the check for ACPI locator may be reduntant. However, this routine is 936 * suitable for both busses whose only locator is ACPI and as a building block 937 * for busses that have multiple locators to cope with. 938 */ 939 int 940 acpi_get_acpi_device_path(device_t bus, device_t child, const char *locator, struct sbuf *sb) 941 { 942 if (strcmp(locator, BUS_LOCATOR_ACPI) == 0) { 943 ACPI_HANDLE *handle = acpi_get_handle(child); 944 945 if (handle != NULL) 946 sbuf_printf(sb, "%s", acpi_name(handle)); 947 return (0); 948 } 949 950 return (bus_generic_get_device_path(bus, child, locator, sb)); 951 } 952 953 static int 954 acpi_get_device_path(device_t bus, device_t child, const char *locator, struct sbuf *sb) 955 { 956 struct acpi_device *dinfo = device_get_ivars(child); 957 958 if (strcmp(locator, BUS_LOCATOR_ACPI) == 0) 959 return (acpi_get_acpi_device_path(bus, child, locator, sb)); 960 961 if (strcmp(locator, BUS_LOCATOR_UEFI) == 0) { 962 ACPI_DEVICE_INFO *adinfo; 963 if (!ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo)) && 964 dinfo->ad_handle != 0 && (adinfo->Valid & ACPI_VALID_HID)) { 965 const char *hid = adinfo->HardwareId.String; 966 u_long uid = (adinfo->Valid & ACPI_VALID_UID) ? 967 strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL; 968 u_long hidval; 969 970 /* 971 * In UEFI Stanard Version 2.6, Section 9.6.1.6 Text 972 * Device Node Reference, there's an insanely long table 973 * 98. This implements the relevant bits from that 974 * table. Newer versions appear to have not required 975 * anything new. The EDK2 firmware presents both PciRoot 976 * and PcieRoot as PciRoot. Follow the EDK2 standard. 977 */ 978 if (strncmp("PNP", hid, 3) != 0) 979 goto nomatch; 980 hidval = strtoul(hid + 3, NULL, 16); 981 switch (hidval) { 982 case 0x0301: 983 sbuf_printf(sb, "Keyboard(0x%lx)", uid); 984 break; 985 case 0x0401: 986 sbuf_printf(sb, "ParallelPort(0x%lx)", uid); 987 break; 988 case 0x0501: 989 sbuf_printf(sb, "Serial(0x%lx)", uid); 990 break; 991 case 0x0604: 992 sbuf_printf(sb, "Floppy(0x%lx)", uid); 993 break; 994 case 0x0a03: 995 case 0x0a08: 996 sbuf_printf(sb, "PciRoot(0x%lx)", uid); 997 break; 998 default: /* Everything else gets a generic encode */ 999 nomatch: 1000 sbuf_printf(sb, "Acpi(%s,0x%lx)", hid, uid); 1001 break; 1002 } 1003 } 1004 /* Not handled: AcpiAdr... unsure how to know it's one */ 1005 } 1006 1007 /* For the rest, punt to the default handler */ 1008 return (bus_generic_get_device_path(bus, child, locator, sb)); 1009 } 1010 1011 /* 1012 * Handle device deletion. 1013 */ 1014 static void 1015 acpi_child_deleted(device_t dev, device_t child) 1016 { 1017 struct acpi_device *dinfo = device_get_ivars(child); 1018 1019 if (acpi_get_device(dinfo->ad_handle) == child) 1020 AcpiDetachData(dinfo->ad_handle, acpi_fake_objhandler); 1021 } 1022 1023 /* 1024 * Handle per-device ivars 1025 */ 1026 static int 1027 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) 1028 { 1029 struct acpi_device *ad; 1030 1031 if ((ad = device_get_ivars(child)) == NULL) { 1032 device_printf(child, "device has no ivars\n"); 1033 return (ENOENT); 1034 } 1035 1036 /* ACPI and ISA compatibility ivars */ 1037 switch(index) { 1038 case ACPI_IVAR_HANDLE: 1039 *(ACPI_HANDLE *)result = ad->ad_handle; 1040 break; 1041 case ACPI_IVAR_PRIVATE: 1042 *(void **)result = ad->ad_private; 1043 break; 1044 case ACPI_IVAR_FLAGS: 1045 *(int *)result = ad->ad_flags; 1046 break; 1047 case ISA_IVAR_VENDORID: 1048 case ISA_IVAR_SERIAL: 1049 case ISA_IVAR_COMPATID: 1050 *(int *)result = -1; 1051 break; 1052 case ISA_IVAR_LOGICALID: 1053 *(int *)result = acpi_isa_get_logicalid(child); 1054 break; 1055 case PCI_IVAR_CLASS: 1056 *(uint8_t*)result = (ad->ad_cls_class >> 16) & 0xff; 1057 break; 1058 case PCI_IVAR_SUBCLASS: 1059 *(uint8_t*)result = (ad->ad_cls_class >> 8) & 0xff; 1060 break; 1061 case PCI_IVAR_PROGIF: 1062 *(uint8_t*)result = (ad->ad_cls_class >> 0) & 0xff; 1063 break; 1064 default: 1065 return (ENOENT); 1066 } 1067 1068 return (0); 1069 } 1070 1071 static int 1072 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value) 1073 { 1074 struct acpi_device *ad; 1075 1076 if ((ad = device_get_ivars(child)) == NULL) { 1077 device_printf(child, "device has no ivars\n"); 1078 return (ENOENT); 1079 } 1080 1081 switch(index) { 1082 case ACPI_IVAR_HANDLE: 1083 ad->ad_handle = (ACPI_HANDLE)value; 1084 break; 1085 case ACPI_IVAR_PRIVATE: 1086 ad->ad_private = (void *)value; 1087 break; 1088 case ACPI_IVAR_FLAGS: 1089 ad->ad_flags = (int)value; 1090 break; 1091 default: 1092 panic("bad ivar write request (%d)", index); 1093 return (ENOENT); 1094 } 1095 1096 return (0); 1097 } 1098 1099 /* 1100 * Handle child resource allocation/removal 1101 */ 1102 static struct resource_list * 1103 acpi_get_rlist(device_t dev, device_t child) 1104 { 1105 struct acpi_device *ad; 1106 1107 ad = device_get_ivars(child); 1108 return (&ad->ad_rl); 1109 } 1110 1111 static int 1112 acpi_match_resource_hint(device_t dev, int type, long value) 1113 { 1114 struct acpi_device *ad = device_get_ivars(dev); 1115 struct resource_list *rl = &ad->ad_rl; 1116 struct resource_list_entry *rle; 1117 1118 STAILQ_FOREACH(rle, rl, link) { 1119 if (rle->type != type) 1120 continue; 1121 if (rle->start <= value && rle->end >= value) 1122 return (1); 1123 } 1124 return (0); 1125 } 1126 1127 /* 1128 * Does this device match because the resources match? 1129 */ 1130 static bool 1131 acpi_hint_device_matches_resources(device_t child, const char *name, 1132 int unit) 1133 { 1134 long value; 1135 bool matches; 1136 1137 /* 1138 * Check for matching resources. We must have at least one match. 1139 * Since I/O and memory resources cannot be shared, if we get a 1140 * match on either of those, ignore any mismatches in IRQs or DRQs. 1141 * 1142 * XXX: We may want to revisit this to be more lenient and wire 1143 * as long as it gets one match. 1144 */ 1145 matches = false; 1146 if (resource_long_value(name, unit, "port", &value) == 0) { 1147 /* 1148 * Floppy drive controllers are notorious for having a 1149 * wide variety of resources not all of which include the 1150 * first port that is specified by the hint (typically 1151 * 0x3f0) (see the comment above fdc_isa_alloc_resources() 1152 * in fdc_isa.c). However, they do all seem to include 1153 * port + 2 (e.g. 0x3f2) so for a floppy device, look for 1154 * 'value + 2' in the port resources instead of the hint 1155 * value. 1156 */ 1157 if (strcmp(name, "fdc") == 0) 1158 value += 2; 1159 if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value)) 1160 matches = true; 1161 else 1162 return false; 1163 } 1164 if (resource_long_value(name, unit, "maddr", &value) == 0) { 1165 if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value)) 1166 matches = true; 1167 else 1168 return false; 1169 } 1170 1171 /* 1172 * If either the I/O address and/or the memory address matched, then 1173 * assumed this devices matches and that any mismatch in other resources 1174 * will be resolved by siltently ignoring those other resources. Otherwise 1175 * all further resources must match. 1176 */ 1177 if (matches) { 1178 return (true); 1179 } 1180 if (resource_long_value(name, unit, "irq", &value) == 0) { 1181 if (acpi_match_resource_hint(child, SYS_RES_IRQ, value)) 1182 matches = true; 1183 else 1184 return false; 1185 } 1186 if (resource_long_value(name, unit, "drq", &value) == 0) { 1187 if (acpi_match_resource_hint(child, SYS_RES_DRQ, value)) 1188 matches = true; 1189 else 1190 return false; 1191 } 1192 return matches; 1193 } 1194 1195 1196 /* 1197 * Wire device unit numbers based on resource matches in hints. 1198 */ 1199 static void 1200 acpi_hint_device_unit(device_t acdev, device_t child, const char *name, 1201 int *unitp) 1202 { 1203 device_location_cache_t *cache; 1204 const char *s; 1205 int line, unit; 1206 bool matches; 1207 1208 /* 1209 * Iterate over all the hints for the devices with the specified 1210 * name to see if one's resources are a subset of this device. 1211 */ 1212 line = 0; 1213 cache = dev_wired_cache_init(); 1214 while (resource_find_dev(&line, name, &unit, "at", NULL) == 0) { 1215 /* Must have an "at" for acpi or isa. */ 1216 resource_string_value(name, unit, "at", &s); 1217 matches = false; 1218 if (strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 || 1219 strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0) 1220 matches = acpi_hint_device_matches_resources(child, name, unit); 1221 else 1222 matches = dev_wired_cache_match(cache, child, s); 1223 1224 if (matches) { 1225 /* We have a winner! */ 1226 *unitp = unit; 1227 break; 1228 } 1229 } 1230 dev_wired_cache_fini(cache); 1231 } 1232 1233 /* 1234 * Fetch the NUMA domain for a device by mapping the value returned by 1235 * _PXM to a NUMA domain. If the device does not have a _PXM method, 1236 * -2 is returned. If any other error occurs, -1 is returned. 1237 */ 1238 static int 1239 acpi_parse_pxm(device_t dev) 1240 { 1241 #ifdef NUMA 1242 #if defined(__i386__) || defined(__amd64__) || defined(__aarch64__) 1243 ACPI_HANDLE handle; 1244 ACPI_STATUS status; 1245 int pxm; 1246 1247 handle = acpi_get_handle(dev); 1248 if (handle == NULL) 1249 return (-2); 1250 status = acpi_GetInteger(handle, "_PXM", &pxm); 1251 if (ACPI_SUCCESS(status)) 1252 return (acpi_map_pxm_to_vm_domainid(pxm)); 1253 if (status == AE_NOT_FOUND) 1254 return (-2); 1255 #endif 1256 #endif 1257 return (-1); 1258 } 1259 1260 int 1261 acpi_get_cpus(device_t dev, device_t child, enum cpu_sets op, size_t setsize, 1262 cpuset_t *cpuset) 1263 { 1264 int d, error; 1265 1266 d = acpi_parse_pxm(child); 1267 if (d < 0) 1268 return (bus_generic_get_cpus(dev, child, op, setsize, cpuset)); 1269 1270 switch (op) { 1271 case LOCAL_CPUS: 1272 if (setsize != sizeof(cpuset_t)) 1273 return (EINVAL); 1274 *cpuset = cpuset_domain[d]; 1275 return (0); 1276 case INTR_CPUS: 1277 error = bus_generic_get_cpus(dev, child, op, setsize, cpuset); 1278 if (error != 0) 1279 return (error); 1280 if (setsize != sizeof(cpuset_t)) 1281 return (EINVAL); 1282 CPU_AND(cpuset, cpuset, &cpuset_domain[d]); 1283 return (0); 1284 default: 1285 return (bus_generic_get_cpus(dev, child, op, setsize, cpuset)); 1286 } 1287 } 1288 1289 /* 1290 * Fetch the NUMA domain for the given device 'dev'. 1291 * 1292 * If a device has a _PXM method, map that to a NUMA domain. 1293 * Otherwise, pass the request up to the parent. 1294 * If there's no matching domain or the domain cannot be 1295 * determined, return ENOENT. 1296 */ 1297 int 1298 acpi_get_domain(device_t dev, device_t child, int *domain) 1299 { 1300 int d; 1301 1302 d = acpi_parse_pxm(child); 1303 if (d >= 0) { 1304 *domain = d; 1305 return (0); 1306 } 1307 if (d == -1) 1308 return (ENOENT); 1309 1310 /* No _PXM node; go up a level */ 1311 return (bus_generic_get_domain(dev, child, domain)); 1312 } 1313 1314 /* 1315 * Pre-allocate/manage all memory and IO resources. Since rman can't handle 1316 * duplicates, we merge any in the sysresource attach routine. 1317 */ 1318 static int 1319 acpi_sysres_alloc(device_t dev) 1320 { 1321 struct resource *res; 1322 struct resource_list *rl; 1323 struct resource_list_entry *rle; 1324 struct rman *rm; 1325 device_t *children; 1326 int child_count, i; 1327 1328 /* 1329 * Probe/attach any sysresource devices. This would be unnecessary if we 1330 * had multi-pass probe/attach. 1331 */ 1332 if (device_get_children(dev, &children, &child_count) != 0) 1333 return (ENXIO); 1334 for (i = 0; i < child_count; i++) { 1335 if (ACPI_ID_PROBE(dev, children[i], sysres_ids, NULL) <= 0) 1336 device_probe_and_attach(children[i]); 1337 } 1338 free(children, M_TEMP); 1339 1340 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev); 1341 STAILQ_FOREACH(rle, rl, link) { 1342 if (rle->res != NULL) { 1343 device_printf(dev, "duplicate resource for %jx\n", rle->start); 1344 continue; 1345 } 1346 1347 /* Only memory and IO resources are valid here. */ 1348 switch (rle->type) { 1349 case SYS_RES_IOPORT: 1350 rm = &acpi_rman_io; 1351 break; 1352 case SYS_RES_MEMORY: 1353 rm = &acpi_rman_mem; 1354 break; 1355 default: 1356 continue; 1357 } 1358 1359 /* Pre-allocate resource and add to our rman pool. */ 1360 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type, 1361 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0); 1362 if (res != NULL) { 1363 rman_manage_region(rm, rman_get_start(res), rman_get_end(res)); 1364 rle->res = res; 1365 } else if (bootverbose) 1366 device_printf(dev, "reservation of %jx, %jx (%d) failed\n", 1367 rle->start, rle->count, rle->type); 1368 } 1369 return (0); 1370 } 1371 1372 /* 1373 * Reserve declared resources for devices found during attach once system 1374 * resources have been allocated. 1375 */ 1376 static void 1377 acpi_reserve_resources(device_t dev) 1378 { 1379 struct resource_list_entry *rle; 1380 struct resource_list *rl; 1381 struct acpi_device *ad; 1382 struct acpi_softc *sc; 1383 device_t *children; 1384 int child_count, i; 1385 1386 sc = device_get_softc(dev); 1387 if (device_get_children(dev, &children, &child_count) != 0) 1388 return; 1389 for (i = 0; i < child_count; i++) { 1390 ad = device_get_ivars(children[i]); 1391 rl = &ad->ad_rl; 1392 1393 /* Don't reserve system resources. */ 1394 if (ACPI_ID_PROBE(dev, children[i], sysres_ids, NULL) <= 0) 1395 continue; 1396 1397 STAILQ_FOREACH(rle, rl, link) { 1398 /* 1399 * Don't reserve IRQ resources. There are many sticky things 1400 * to get right otherwise (e.g. IRQs for psm, atkbd, and HPET 1401 * when using legacy routing). 1402 */ 1403 if (rle->type == SYS_RES_IRQ) 1404 continue; 1405 1406 /* 1407 * Don't reserve the resource if it is already allocated. 1408 * The acpi_ec(4) driver can allocate its resources early 1409 * if ECDT is present. 1410 */ 1411 if (rle->res != NULL) 1412 continue; 1413 1414 /* 1415 * Try to reserve the resource from our parent. If this 1416 * fails because the resource is a system resource, just 1417 * let it be. The resource range is already reserved so 1418 * that other devices will not use it. If the driver 1419 * needs to allocate the resource, then 1420 * acpi_alloc_resource() will sub-alloc from the system 1421 * resource. 1422 */ 1423 resource_list_reserve(rl, dev, children[i], rle->type, &rle->rid, 1424 rle->start, rle->end, rle->count, 0); 1425 } 1426 } 1427 free(children, M_TEMP); 1428 sc->acpi_resources_reserved = 1; 1429 } 1430 1431 static int 1432 acpi_set_resource(device_t dev, device_t child, int type, int rid, 1433 rman_res_t start, rman_res_t count) 1434 { 1435 struct acpi_softc *sc = device_get_softc(dev); 1436 struct acpi_device *ad = device_get_ivars(child); 1437 struct resource_list *rl = &ad->ad_rl; 1438 ACPI_DEVICE_INFO *devinfo; 1439 rman_res_t end; 1440 int allow; 1441 1442 /* Ignore IRQ resources for PCI link devices. */ 1443 if (type == SYS_RES_IRQ && 1444 ACPI_ID_PROBE(dev, child, pcilink_ids, NULL) <= 0) 1445 return (0); 1446 1447 /* 1448 * Ignore most resources for PCI root bridges. Some BIOSes 1449 * incorrectly enumerate the memory ranges they decode as plain 1450 * memory resources instead of as ResourceProducer ranges. Other 1451 * BIOSes incorrectly list system resource entries for I/O ranges 1452 * under the PCI bridge. Do allow the one known-correct case on 1453 * x86 of a PCI bridge claiming the I/O ports used for PCI config 1454 * access. 1455 */ 1456 if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) { 1457 if (ACPI_SUCCESS(AcpiGetObjectInfo(ad->ad_handle, &devinfo))) { 1458 if ((devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0) { 1459 #if defined(__i386__) || defined(__amd64__) 1460 allow = (type == SYS_RES_IOPORT && start == CONF1_ADDR_PORT); 1461 #else 1462 allow = 0; 1463 #endif 1464 if (!allow) { 1465 AcpiOsFree(devinfo); 1466 return (0); 1467 } 1468 } 1469 AcpiOsFree(devinfo); 1470 } 1471 } 1472 1473 #ifdef INTRNG 1474 /* map with default for now */ 1475 if (type == SYS_RES_IRQ) 1476 start = (rman_res_t)acpi_map_intr(child, (u_int)start, 1477 acpi_get_handle(child)); 1478 #endif 1479 1480 /* If the resource is already allocated, fail. */ 1481 if (resource_list_busy(rl, type, rid)) 1482 return (EBUSY); 1483 1484 /* If the resource is already reserved, release it. */ 1485 if (resource_list_reserved(rl, type, rid)) 1486 resource_list_unreserve(rl, dev, child, type, rid); 1487 1488 /* Add the resource. */ 1489 end = (start + count - 1); 1490 resource_list_add(rl, type, rid, start, end, count); 1491 1492 /* Don't reserve resources until the system resources are allocated. */ 1493 if (!sc->acpi_resources_reserved) 1494 return (0); 1495 1496 /* Don't reserve system resources. */ 1497 if (ACPI_ID_PROBE(dev, child, sysres_ids, NULL) <= 0) 1498 return (0); 1499 1500 /* 1501 * Don't reserve IRQ resources. There are many sticky things to 1502 * get right otherwise (e.g. IRQs for psm, atkbd, and HPET when 1503 * using legacy routing). 1504 */ 1505 if (type == SYS_RES_IRQ) 1506 return (0); 1507 1508 /* 1509 * Don't reserve resources for CPU devices. Some of these 1510 * resources need to be allocated as shareable, but reservations 1511 * are always non-shareable. 1512 */ 1513 if (device_get_devclass(child) == devclass_find("cpu")) 1514 return (0); 1515 1516 /* 1517 * Reserve the resource. 1518 * 1519 * XXX: Ignores failure for now. Failure here is probably a 1520 * BIOS/firmware bug? 1521 */ 1522 resource_list_reserve(rl, dev, child, type, &rid, start, end, count, 0); 1523 return (0); 1524 } 1525 1526 static struct resource * 1527 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, 1528 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 1529 { 1530 #ifndef INTRNG 1531 ACPI_RESOURCE ares; 1532 #endif 1533 struct acpi_device *ad; 1534 struct resource_list_entry *rle; 1535 struct resource_list *rl; 1536 struct resource *res; 1537 int isdefault = RMAN_IS_DEFAULT_RANGE(start, end); 1538 1539 /* 1540 * First attempt at allocating the resource. For direct children, 1541 * use resource_list_alloc() to handle reserved resources. For 1542 * other devices, pass the request up to our parent. 1543 */ 1544 if (bus == device_get_parent(child)) { 1545 ad = device_get_ivars(child); 1546 rl = &ad->ad_rl; 1547 1548 /* 1549 * Simulate the behavior of the ISA bus for direct children 1550 * devices. That is, if a non-default range is specified for 1551 * a resource that doesn't exist, use bus_set_resource() to 1552 * add the resource before allocating it. Note that these 1553 * resources will not be reserved. 1554 */ 1555 if (!isdefault && resource_list_find(rl, type, *rid) == NULL) 1556 resource_list_add(rl, type, *rid, start, end, count); 1557 res = resource_list_alloc(rl, bus, child, type, rid, start, end, count, 1558 flags); 1559 #ifndef INTRNG 1560 if (res != NULL && type == SYS_RES_IRQ) { 1561 /* 1562 * Since bus_config_intr() takes immediate effect, we cannot 1563 * configure the interrupt associated with a device when we 1564 * parse the resources but have to defer it until a driver 1565 * actually allocates the interrupt via bus_alloc_resource(). 1566 * 1567 * XXX: Should we handle the lookup failing? 1568 */ 1569 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares))) 1570 acpi_config_intr(child, &ares); 1571 } 1572 #endif 1573 1574 /* 1575 * If this is an allocation of the "default" range for a given 1576 * RID, fetch the exact bounds for this resource from the 1577 * resource list entry to try to allocate the range from the 1578 * system resource regions. 1579 */ 1580 if (res == NULL && isdefault) { 1581 rle = resource_list_find(rl, type, *rid); 1582 if (rle != NULL) { 1583 start = rle->start; 1584 end = rle->end; 1585 count = rle->count; 1586 } 1587 } 1588 } else 1589 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid, 1590 start, end, count, flags); 1591 1592 /* 1593 * If the first attempt failed and this is an allocation of a 1594 * specific range, try to satisfy the request via a suballocation 1595 * from our system resource regions. 1596 */ 1597 if (res == NULL && start + count - 1 == end) 1598 res = acpi_alloc_sysres(child, type, rid, start, end, count, flags); 1599 return (res); 1600 } 1601 1602 /* 1603 * Attempt to allocate a specific resource range from the system 1604 * resource ranges. Note that we only handle memory and I/O port 1605 * system resources. 1606 */ 1607 struct resource * 1608 acpi_alloc_sysres(device_t child, int type, int *rid, rman_res_t start, 1609 rman_res_t end, rman_res_t count, u_int flags) 1610 { 1611 struct rman *rm; 1612 struct resource *res; 1613 1614 switch (type) { 1615 case SYS_RES_IOPORT: 1616 rm = &acpi_rman_io; 1617 break; 1618 case SYS_RES_MEMORY: 1619 rm = &acpi_rman_mem; 1620 break; 1621 default: 1622 return (NULL); 1623 } 1624 1625 KASSERT(start + count - 1 == end, ("wildcard resource range")); 1626 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE, 1627 child); 1628 if (res == NULL) 1629 return (NULL); 1630 1631 rman_set_rid(res, *rid); 1632 1633 /* If requested, activate the resource using the parent's method. */ 1634 if (flags & RF_ACTIVE) 1635 if (bus_activate_resource(child, type, *rid, res) != 0) { 1636 rman_release_resource(res); 1637 return (NULL); 1638 } 1639 1640 return (res); 1641 } 1642 1643 static int 1644 acpi_is_resource_managed(int type, struct resource *r) 1645 { 1646 1647 /* We only handle memory and IO resources through rman. */ 1648 switch (type) { 1649 case SYS_RES_IOPORT: 1650 return (rman_is_region_manager(r, &acpi_rman_io)); 1651 case SYS_RES_MEMORY: 1652 return (rman_is_region_manager(r, &acpi_rman_mem)); 1653 } 1654 return (0); 1655 } 1656 1657 static int 1658 acpi_adjust_resource(device_t bus, device_t child, int type, struct resource *r, 1659 rman_res_t start, rman_res_t end) 1660 { 1661 1662 if (acpi_is_resource_managed(type, r)) 1663 return (rman_adjust_resource(r, start, end)); 1664 return (bus_generic_adjust_resource(bus, child, type, r, start, end)); 1665 } 1666 1667 static int 1668 acpi_release_resource(device_t bus, device_t child, int type, int rid, 1669 struct resource *r) 1670 { 1671 int ret; 1672 1673 /* 1674 * If this resource belongs to one of our internal managers, 1675 * deactivate it and release it to the local pool. 1676 */ 1677 if (acpi_is_resource_managed(type, r)) { 1678 if (rman_get_flags(r) & RF_ACTIVE) { 1679 ret = bus_deactivate_resource(child, type, rid, r); 1680 if (ret != 0) 1681 return (ret); 1682 } 1683 return (rman_release_resource(r)); 1684 } 1685 1686 return (bus_generic_rl_release_resource(bus, child, type, rid, r)); 1687 } 1688 1689 static void 1690 acpi_delete_resource(device_t bus, device_t child, int type, int rid) 1691 { 1692 struct resource_list *rl; 1693 1694 rl = acpi_get_rlist(bus, child); 1695 if (resource_list_busy(rl, type, rid)) { 1696 device_printf(bus, "delete_resource: Resource still owned by child" 1697 " (type=%d, rid=%d)\n", type, rid); 1698 return; 1699 } 1700 resource_list_unreserve(rl, bus, child, type, rid); 1701 resource_list_delete(rl, type, rid); 1702 } 1703 1704 /* Allocate an IO port or memory resource, given its GAS. */ 1705 int 1706 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas, 1707 struct resource **res, u_int flags) 1708 { 1709 int error, res_type; 1710 1711 error = ENOMEM; 1712 if (type == NULL || rid == NULL || gas == NULL || res == NULL) 1713 return (EINVAL); 1714 1715 /* We only support memory and IO spaces. */ 1716 switch (gas->SpaceId) { 1717 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 1718 res_type = SYS_RES_MEMORY; 1719 break; 1720 case ACPI_ADR_SPACE_SYSTEM_IO: 1721 res_type = SYS_RES_IOPORT; 1722 break; 1723 default: 1724 return (EOPNOTSUPP); 1725 } 1726 1727 /* 1728 * If the register width is less than 8, assume the BIOS author means 1729 * it is a bit field and just allocate a byte. 1730 */ 1731 if (gas->BitWidth && gas->BitWidth < 8) 1732 gas->BitWidth = 8; 1733 1734 /* Validate the address after we're sure we support the space. */ 1735 if (gas->Address == 0 || gas->BitWidth == 0) 1736 return (EINVAL); 1737 1738 bus_set_resource(dev, res_type, *rid, gas->Address, 1739 gas->BitWidth / 8); 1740 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags); 1741 if (*res != NULL) { 1742 *type = res_type; 1743 error = 0; 1744 } else 1745 bus_delete_resource(dev, res_type, *rid); 1746 1747 return (error); 1748 } 1749 1750 /* Probe _HID and _CID for compatible ISA PNP ids. */ 1751 static uint32_t 1752 acpi_isa_get_logicalid(device_t dev) 1753 { 1754 ACPI_DEVICE_INFO *devinfo; 1755 ACPI_HANDLE h; 1756 uint32_t pnpid; 1757 1758 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1759 1760 /* Fetch and validate the HID. */ 1761 if ((h = acpi_get_handle(dev)) == NULL || 1762 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 1763 return_VALUE (0); 1764 1765 pnpid = (devinfo->Valid & ACPI_VALID_HID) != 0 && 1766 devinfo->HardwareId.Length >= ACPI_EISAID_STRING_SIZE ? 1767 PNP_EISAID(devinfo->HardwareId.String) : 0; 1768 AcpiOsFree(devinfo); 1769 1770 return_VALUE (pnpid); 1771 } 1772 1773 static int 1774 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count) 1775 { 1776 ACPI_DEVICE_INFO *devinfo; 1777 ACPI_PNP_DEVICE_ID *ids; 1778 ACPI_HANDLE h; 1779 uint32_t *pnpid; 1780 int i, valid; 1781 1782 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1783 1784 pnpid = cids; 1785 1786 /* Fetch and validate the CID */ 1787 if ((h = acpi_get_handle(dev)) == NULL || 1788 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 1789 return_VALUE (0); 1790 1791 if ((devinfo->Valid & ACPI_VALID_CID) == 0) { 1792 AcpiOsFree(devinfo); 1793 return_VALUE (0); 1794 } 1795 1796 if (devinfo->CompatibleIdList.Count < count) 1797 count = devinfo->CompatibleIdList.Count; 1798 ids = devinfo->CompatibleIdList.Ids; 1799 for (i = 0, valid = 0; i < count; i++) 1800 if (ids[i].Length >= ACPI_EISAID_STRING_SIZE && 1801 strncmp(ids[i].String, "PNP", 3) == 0) { 1802 *pnpid++ = PNP_EISAID(ids[i].String); 1803 valid++; 1804 } 1805 AcpiOsFree(devinfo); 1806 1807 return_VALUE (valid); 1808 } 1809 1810 static int 1811 acpi_device_id_probe(device_t bus, device_t dev, char **ids, char **match) 1812 { 1813 ACPI_HANDLE h; 1814 ACPI_OBJECT_TYPE t; 1815 int rv; 1816 int i; 1817 1818 h = acpi_get_handle(dev); 1819 if (ids == NULL || h == NULL) 1820 return (ENXIO); 1821 t = acpi_get_type(dev); 1822 if (t != ACPI_TYPE_DEVICE && t != ACPI_TYPE_PROCESSOR) 1823 return (ENXIO); 1824 1825 /* Try to match one of the array of IDs with a HID or CID. */ 1826 for (i = 0; ids[i] != NULL; i++) { 1827 rv = acpi_MatchHid(h, ids[i]); 1828 if (rv == ACPI_MATCHHID_NOMATCH) 1829 continue; 1830 1831 if (match != NULL) { 1832 *match = ids[i]; 1833 } 1834 return ((rv == ACPI_MATCHHID_HID)? 1835 BUS_PROBE_DEFAULT : BUS_PROBE_LOW_PRIORITY); 1836 } 1837 return (ENXIO); 1838 } 1839 1840 static ACPI_STATUS 1841 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname, 1842 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret) 1843 { 1844 ACPI_HANDLE h; 1845 1846 if (dev == NULL) 1847 h = ACPI_ROOT_OBJECT; 1848 else if ((h = acpi_get_handle(dev)) == NULL) 1849 return (AE_BAD_PARAMETER); 1850 return (AcpiEvaluateObject(h, pathname, parameters, ret)); 1851 } 1852 1853 static ACPI_STATUS 1854 acpi_device_get_prop(device_t bus, device_t dev, ACPI_STRING propname, 1855 const ACPI_OBJECT **value) 1856 { 1857 const ACPI_OBJECT *pkg, *name, *val; 1858 struct acpi_device *ad; 1859 ACPI_STATUS status; 1860 int i; 1861 1862 ad = device_get_ivars(dev); 1863 1864 if (ad == NULL || propname == NULL) 1865 return (AE_BAD_PARAMETER); 1866 if (ad->dsd_pkg == NULL) { 1867 if (ad->dsd.Pointer == NULL) { 1868 status = acpi_find_dsd(bus, dev); 1869 if (ACPI_FAILURE(status)) 1870 return (status); 1871 } else { 1872 return (AE_NOT_FOUND); 1873 } 1874 } 1875 1876 for (i = 0; i < ad->dsd_pkg->Package.Count; i ++) { 1877 pkg = &ad->dsd_pkg->Package.Elements[i]; 1878 if (pkg->Type != ACPI_TYPE_PACKAGE || pkg->Package.Count != 2) 1879 continue; 1880 1881 name = &pkg->Package.Elements[0]; 1882 val = &pkg->Package.Elements[1]; 1883 if (name->Type != ACPI_TYPE_STRING) 1884 continue; 1885 if (strncmp(propname, name->String.Pointer, name->String.Length) == 0) { 1886 if (value != NULL) 1887 *value = val; 1888 1889 return (AE_OK); 1890 } 1891 } 1892 1893 return (AE_NOT_FOUND); 1894 } 1895 1896 static ACPI_STATUS 1897 acpi_find_dsd(device_t bus, device_t dev) 1898 { 1899 const ACPI_OBJECT *dsd, *guid, *pkg; 1900 struct acpi_device *ad; 1901 ACPI_STATUS status; 1902 1903 ad = device_get_ivars(dev); 1904 ad->dsd.Length = ACPI_ALLOCATE_BUFFER; 1905 ad->dsd.Pointer = NULL; 1906 ad->dsd_pkg = NULL; 1907 1908 status = ACPI_EVALUATE_OBJECT(bus, dev, "_DSD", NULL, &ad->dsd); 1909 if (ACPI_FAILURE(status)) 1910 return (status); 1911 1912 dsd = ad->dsd.Pointer; 1913 guid = &dsd->Package.Elements[0]; 1914 pkg = &dsd->Package.Elements[1]; 1915 1916 if (guid->Type != ACPI_TYPE_BUFFER || pkg->Type != ACPI_TYPE_PACKAGE || 1917 guid->Buffer.Length != sizeof(acpi_dsd_uuid)) 1918 return (AE_NOT_FOUND); 1919 if (memcmp(guid->Buffer.Pointer, &acpi_dsd_uuid, 1920 sizeof(acpi_dsd_uuid)) == 0) { 1921 1922 ad->dsd_pkg = pkg; 1923 return (AE_OK); 1924 } 1925 1926 return (AE_NOT_FOUND); 1927 } 1928 1929 static ssize_t 1930 acpi_bus_get_prop(device_t bus, device_t child, const char *propname, 1931 void *propvalue, size_t size, device_property_type_t type) 1932 { 1933 ACPI_STATUS status; 1934 const ACPI_OBJECT *obj; 1935 1936 status = acpi_device_get_prop(bus, child, __DECONST(char *, propname), 1937 &obj); 1938 if (ACPI_FAILURE(status)) 1939 return (-1); 1940 1941 switch (type) { 1942 case DEVICE_PROP_ANY: 1943 case DEVICE_PROP_BUFFER: 1944 case DEVICE_PROP_UINT32: 1945 case DEVICE_PROP_UINT64: 1946 break; 1947 default: 1948 return (-1); 1949 } 1950 1951 switch (obj->Type) { 1952 case ACPI_TYPE_INTEGER: 1953 if (type == DEVICE_PROP_UINT32) { 1954 if (propvalue != NULL && size >= sizeof(uint32_t)) 1955 *((uint32_t *)propvalue) = obj->Integer.Value; 1956 return (sizeof(uint32_t)); 1957 } 1958 if (propvalue != NULL && size >= sizeof(uint64_t)) 1959 *((uint64_t *) propvalue) = obj->Integer.Value; 1960 return (sizeof(uint64_t)); 1961 1962 case ACPI_TYPE_STRING: 1963 if (type != DEVICE_PROP_ANY && 1964 type != DEVICE_PROP_BUFFER) 1965 return (-1); 1966 1967 if (propvalue != NULL && size > 0) 1968 memcpy(propvalue, obj->String.Pointer, 1969 MIN(size, obj->String.Length)); 1970 return (obj->String.Length); 1971 1972 case ACPI_TYPE_BUFFER: 1973 if (propvalue != NULL && size > 0) 1974 memcpy(propvalue, obj->Buffer.Pointer, 1975 MIN(size, obj->Buffer.Length)); 1976 return (obj->Buffer.Length); 1977 1978 default: 1979 return (0); 1980 } 1981 } 1982 1983 int 1984 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate) 1985 { 1986 struct acpi_softc *sc; 1987 ACPI_HANDLE handle; 1988 ACPI_STATUS status; 1989 char sxd[8]; 1990 1991 handle = acpi_get_handle(dev); 1992 1993 /* 1994 * XXX If we find these devices, don't try to power them down. 1995 * The serial and IRDA ports on my T23 hang the system when 1996 * set to D3 and it appears that such legacy devices may 1997 * need special handling in their drivers. 1998 */ 1999 if (dstate == NULL || handle == NULL || 2000 acpi_MatchHid(handle, "PNP0500") || 2001 acpi_MatchHid(handle, "PNP0501") || 2002 acpi_MatchHid(handle, "PNP0502") || 2003 acpi_MatchHid(handle, "PNP0510") || 2004 acpi_MatchHid(handle, "PNP0511")) 2005 return (ENXIO); 2006 2007 /* 2008 * Override next state with the value from _SxD, if present. 2009 * Note illegal _S0D is evaluated because some systems expect this. 2010 */ 2011 sc = device_get_softc(bus); 2012 snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate); 2013 status = acpi_GetInteger(handle, sxd, dstate); 2014 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { 2015 device_printf(dev, "failed to get %s on %s: %s\n", sxd, 2016 acpi_name(handle), AcpiFormatException(status)); 2017 return (ENXIO); 2018 } 2019 2020 return (0); 2021 } 2022 2023 /* Callback arg for our implementation of walking the namespace. */ 2024 struct acpi_device_scan_ctx { 2025 acpi_scan_cb_t user_fn; 2026 void *arg; 2027 ACPI_HANDLE parent; 2028 }; 2029 2030 static ACPI_STATUS 2031 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval) 2032 { 2033 struct acpi_device_scan_ctx *ctx; 2034 device_t dev, old_dev; 2035 ACPI_STATUS status; 2036 ACPI_OBJECT_TYPE type; 2037 2038 /* 2039 * Skip this device if we think we'll have trouble with it or it is 2040 * the parent where the scan began. 2041 */ 2042 ctx = (struct acpi_device_scan_ctx *)arg; 2043 if (acpi_avoid(h) || h == ctx->parent) 2044 return (AE_OK); 2045 2046 /* If this is not a valid device type (e.g., a method), skip it. */ 2047 if (ACPI_FAILURE(AcpiGetType(h, &type))) 2048 return (AE_OK); 2049 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR && 2050 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER) 2051 return (AE_OK); 2052 2053 /* 2054 * Call the user function with the current device. If it is unchanged 2055 * afterwards, return. Otherwise, we update the handle to the new dev. 2056 */ 2057 old_dev = acpi_get_device(h); 2058 dev = old_dev; 2059 status = ctx->user_fn(h, &dev, level, ctx->arg); 2060 if (ACPI_FAILURE(status) || old_dev == dev) 2061 return (status); 2062 2063 /* Remove the old child and its connection to the handle. */ 2064 if (old_dev != NULL) 2065 device_delete_child(device_get_parent(old_dev), old_dev); 2066 2067 /* Recreate the handle association if the user created a device. */ 2068 if (dev != NULL) 2069 AcpiAttachData(h, acpi_fake_objhandler, dev); 2070 2071 return (AE_OK); 2072 } 2073 2074 static ACPI_STATUS 2075 acpi_device_scan_children(device_t bus, device_t dev, int max_depth, 2076 acpi_scan_cb_t user_fn, void *arg) 2077 { 2078 ACPI_HANDLE h; 2079 struct acpi_device_scan_ctx ctx; 2080 2081 if (acpi_disabled("children")) 2082 return (AE_OK); 2083 2084 if (dev == NULL) 2085 h = ACPI_ROOT_OBJECT; 2086 else if ((h = acpi_get_handle(dev)) == NULL) 2087 return (AE_BAD_PARAMETER); 2088 ctx.user_fn = user_fn; 2089 ctx.arg = arg; 2090 ctx.parent = h; 2091 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth, 2092 acpi_device_scan_cb, NULL, &ctx, NULL)); 2093 } 2094 2095 /* 2096 * Even though ACPI devices are not PCI, we use the PCI approach for setting 2097 * device power states since it's close enough to ACPI. 2098 */ 2099 int 2100 acpi_set_powerstate(device_t child, int state) 2101 { 2102 ACPI_HANDLE h; 2103 ACPI_STATUS status; 2104 2105 h = acpi_get_handle(child); 2106 if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX) 2107 return (EINVAL); 2108 if (h == NULL) 2109 return (0); 2110 2111 /* Ignore errors if the power methods aren't present. */ 2112 status = acpi_pwr_switch_consumer(h, state); 2113 if (ACPI_SUCCESS(status)) { 2114 if (bootverbose) 2115 device_printf(child, "set ACPI power state D%d on %s\n", 2116 state, acpi_name(h)); 2117 } else if (status != AE_NOT_FOUND) 2118 device_printf(child, 2119 "failed to set ACPI power state D%d on %s: %s\n", state, 2120 acpi_name(h), AcpiFormatException(status)); 2121 2122 return (0); 2123 } 2124 2125 static int 2126 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids) 2127 { 2128 int result, cid_count, i; 2129 uint32_t lid, cids[8]; 2130 2131 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 2132 2133 /* 2134 * ISA-style drivers attached to ACPI may persist and 2135 * probe manually if we return ENOENT. We never want 2136 * that to happen, so don't ever return it. 2137 */ 2138 result = ENXIO; 2139 2140 /* Scan the supplied IDs for a match */ 2141 lid = acpi_isa_get_logicalid(child); 2142 cid_count = acpi_isa_get_compatid(child, cids, 8); 2143 while (ids && ids->ip_id) { 2144 if (lid == ids->ip_id) { 2145 result = 0; 2146 goto out; 2147 } 2148 for (i = 0; i < cid_count; i++) { 2149 if (cids[i] == ids->ip_id) { 2150 result = 0; 2151 goto out; 2152 } 2153 } 2154 ids++; 2155 } 2156 2157 out: 2158 if (result == 0 && ids->ip_desc) 2159 device_set_desc(child, ids->ip_desc); 2160 2161 return_VALUE (result); 2162 } 2163 2164 /* 2165 * Look for a MCFG table. If it is present, use the settings for 2166 * domain (segment) 0 to setup PCI config space access via the memory 2167 * map. 2168 * 2169 * On non-x86 architectures (arm64 for now), this will be done from the 2170 * PCI host bridge driver. 2171 */ 2172 static void 2173 acpi_enable_pcie(void) 2174 { 2175 #if defined(__i386__) || defined(__amd64__) 2176 ACPI_TABLE_HEADER *hdr; 2177 ACPI_MCFG_ALLOCATION *alloc, *end; 2178 ACPI_STATUS status; 2179 2180 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr); 2181 if (ACPI_FAILURE(status)) 2182 return; 2183 2184 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length); 2185 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1); 2186 while (alloc < end) { 2187 if (alloc->PciSegment == 0) { 2188 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber, 2189 alloc->EndBusNumber); 2190 return; 2191 } 2192 alloc++; 2193 } 2194 #endif 2195 } 2196 2197 static void 2198 acpi_platform_osc(device_t dev) 2199 { 2200 ACPI_HANDLE sb_handle; 2201 ACPI_STATUS status; 2202 uint32_t cap_set[2]; 2203 2204 /* 0811B06E-4A27-44F9-8D60-3CBBC22E7B48 */ 2205 static uint8_t acpi_platform_uuid[ACPI_UUID_LENGTH] = { 2206 0x6e, 0xb0, 0x11, 0x08, 0x27, 0x4a, 0xf9, 0x44, 2207 0x8d, 0x60, 0x3c, 0xbb, 0xc2, 0x2e, 0x7b, 0x48 2208 }; 2209 2210 if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) 2211 return; 2212 2213 cap_set[1] = 0x10; /* APEI Support */ 2214 status = acpi_EvaluateOSC(sb_handle, acpi_platform_uuid, 1, 2215 nitems(cap_set), cap_set, cap_set, false); 2216 if (ACPI_FAILURE(status)) { 2217 if (status == AE_NOT_FOUND) 2218 return; 2219 device_printf(dev, "_OSC failed: %s\n", 2220 AcpiFormatException(status)); 2221 return; 2222 } 2223 } 2224 2225 /* 2226 * Scan all of the ACPI namespace and attach child devices. 2227 * 2228 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and 2229 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec. 2230 * However, in violation of the spec, some systems place their PCI link 2231 * devices in \, so we have to walk the whole namespace. We check the 2232 * type of namespace nodes, so this should be ok. 2233 */ 2234 static void 2235 acpi_probe_children(device_t bus) 2236 { 2237 2238 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 2239 2240 /* 2241 * Scan the namespace and insert placeholders for all the devices that 2242 * we find. We also probe/attach any early devices. 2243 * 2244 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because 2245 * we want to create nodes for all devices, not just those that are 2246 * currently present. (This assumes that we don't want to create/remove 2247 * devices as they appear, which might be smarter.) 2248 */ 2249 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n")); 2250 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child, 2251 NULL, bus, NULL); 2252 2253 /* Pre-allocate resources for our rman from any sysresource devices. */ 2254 acpi_sysres_alloc(bus); 2255 2256 /* Reserve resources already allocated to children. */ 2257 acpi_reserve_resources(bus); 2258 2259 /* Create any static children by calling device identify methods. */ 2260 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n")); 2261 bus_generic_probe(bus); 2262 2263 /* Probe/attach all children, created statically and from the namespace. */ 2264 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "acpi bus_generic_attach\n")); 2265 bus_generic_attach(bus); 2266 2267 /* Attach wake sysctls. */ 2268 acpi_wake_sysctl_walk(bus); 2269 2270 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n")); 2271 return_VOID; 2272 } 2273 2274 /* 2275 * Determine the probe order for a given device. 2276 */ 2277 static void 2278 acpi_probe_order(ACPI_HANDLE handle, int *order) 2279 { 2280 ACPI_OBJECT_TYPE type; 2281 2282 /* 2283 * 0. CPUs 2284 * 1. I/O port and memory system resource holders 2285 * 2. Clocks and timers (to handle early accesses) 2286 * 3. Embedded controllers (to handle early accesses) 2287 * 4. PCI Link Devices 2288 */ 2289 AcpiGetType(handle, &type); 2290 if (type == ACPI_TYPE_PROCESSOR) 2291 *order = 0; 2292 else if (acpi_MatchHid(handle, "PNP0C01") || 2293 acpi_MatchHid(handle, "PNP0C02")) 2294 *order = 1; 2295 else if (acpi_MatchHid(handle, "PNP0100") || 2296 acpi_MatchHid(handle, "PNP0103") || 2297 acpi_MatchHid(handle, "PNP0B00")) 2298 *order = 2; 2299 else if (acpi_MatchHid(handle, "PNP0C09")) 2300 *order = 3; 2301 else if (acpi_MatchHid(handle, "PNP0C0F")) 2302 *order = 4; 2303 } 2304 2305 /* 2306 * Evaluate a child device and determine whether we might attach a device to 2307 * it. 2308 */ 2309 static ACPI_STATUS 2310 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 2311 { 2312 ACPI_DEVICE_INFO *devinfo; 2313 struct acpi_device *ad; 2314 struct acpi_prw_data prw; 2315 ACPI_OBJECT_TYPE type; 2316 ACPI_HANDLE h; 2317 device_t bus, child; 2318 char *handle_str; 2319 int order; 2320 2321 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 2322 2323 if (acpi_disabled("children")) 2324 return_ACPI_STATUS (AE_OK); 2325 2326 /* Skip this device if we think we'll have trouble with it. */ 2327 if (acpi_avoid(handle)) 2328 return_ACPI_STATUS (AE_OK); 2329 2330 bus = (device_t)context; 2331 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) { 2332 handle_str = acpi_name(handle); 2333 switch (type) { 2334 case ACPI_TYPE_DEVICE: 2335 /* 2336 * Since we scan from \, be sure to skip system scope objects. 2337 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around 2338 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run 2339 * during the initialization and \_TZ_ is to support Notify() on it. 2340 */ 2341 if (strcmp(handle_str, "\\_SB_") == 0 || 2342 strcmp(handle_str, "\\_TZ_") == 0) 2343 break; 2344 if (acpi_parse_prw(handle, &prw) == 0) 2345 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit); 2346 2347 /* 2348 * Ignore devices that do not have a _HID or _CID. They should 2349 * be discovered by other buses (e.g. the PCI bus driver). 2350 */ 2351 if (!acpi_has_hid(handle)) 2352 break; 2353 /* FALLTHROUGH */ 2354 case ACPI_TYPE_PROCESSOR: 2355 case ACPI_TYPE_THERMAL: 2356 case ACPI_TYPE_POWER: 2357 /* 2358 * Create a placeholder device for this node. Sort the 2359 * placeholder so that the probe/attach passes will run 2360 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER 2361 * are reserved for special objects (i.e., system 2362 * resources). 2363 */ 2364 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str)); 2365 order = level * 10 + ACPI_DEV_BASE_ORDER; 2366 acpi_probe_order(handle, &order); 2367 child = BUS_ADD_CHILD(bus, order, NULL, -1); 2368 if (child == NULL) 2369 break; 2370 2371 /* Associate the handle with the device_t and vice versa. */ 2372 acpi_set_handle(child, handle); 2373 AcpiAttachData(handle, acpi_fake_objhandler, child); 2374 2375 /* 2376 * Check that the device is present. If it's not present, 2377 * leave it disabled (so that we have a device_t attached to 2378 * the handle, but we don't probe it). 2379 * 2380 * XXX PCI link devices sometimes report "present" but not 2381 * "functional" (i.e. if disabled). Go ahead and probe them 2382 * anyway since we may enable them later. 2383 */ 2384 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) { 2385 /* Never disable PCI link devices. */ 2386 if (acpi_MatchHid(handle, "PNP0C0F")) 2387 break; 2388 2389 /* 2390 * RTC Device should be enabled for CMOS register space 2391 * unless FADT indicate it is not present. 2392 * (checked in RTC probe routine.) 2393 */ 2394 if (acpi_MatchHid(handle, "PNP0B00")) 2395 break; 2396 2397 /* 2398 * Docking stations should remain enabled since the system 2399 * may be undocked at boot. 2400 */ 2401 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h))) 2402 break; 2403 2404 device_disable(child); 2405 break; 2406 } 2407 2408 /* 2409 * Get the device's resource settings and attach them. 2410 * Note that if the device has _PRS but no _CRS, we need 2411 * to decide when it's appropriate to try to configure the 2412 * device. Ignore the return value here; it's OK for the 2413 * device not to have any resources. 2414 */ 2415 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL); 2416 2417 ad = device_get_ivars(child); 2418 ad->ad_cls_class = 0xffffff; 2419 if (ACPI_SUCCESS(AcpiGetObjectInfo(handle, &devinfo))) { 2420 if ((devinfo->Valid & ACPI_VALID_CLS) != 0 && 2421 devinfo->ClassCode.Length >= ACPI_PCICLS_STRING_SIZE) { 2422 ad->ad_cls_class = strtoul(devinfo->ClassCode.String, 2423 NULL, 16); 2424 } 2425 AcpiOsFree(devinfo); 2426 } 2427 break; 2428 } 2429 } 2430 2431 return_ACPI_STATUS (AE_OK); 2432 } 2433 2434 /* 2435 * AcpiAttachData() requires an object handler but never uses it. This is a 2436 * placeholder object handler so we can store a device_t in an ACPI_HANDLE. 2437 */ 2438 void 2439 acpi_fake_objhandler(ACPI_HANDLE h, void *data) 2440 { 2441 } 2442 2443 static void 2444 acpi_shutdown_final(void *arg, int howto) 2445 { 2446 struct acpi_softc *sc = (struct acpi_softc *)arg; 2447 register_t intr; 2448 ACPI_STATUS status; 2449 2450 /* 2451 * XXX Shutdown code should only run on the BSP (cpuid 0). 2452 * Some chipsets do not power off the system correctly if called from 2453 * an AP. 2454 */ 2455 if ((howto & RB_POWEROFF) != 0) { 2456 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 2457 if (ACPI_FAILURE(status)) { 2458 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 2459 AcpiFormatException(status)); 2460 return; 2461 } 2462 device_printf(sc->acpi_dev, "Powering system off\n"); 2463 intr = intr_disable(); 2464 status = AcpiEnterSleepState(ACPI_STATE_S5); 2465 if (ACPI_FAILURE(status)) { 2466 intr_restore(intr); 2467 device_printf(sc->acpi_dev, "power-off failed - %s\n", 2468 AcpiFormatException(status)); 2469 } else { 2470 DELAY(1000000); 2471 intr_restore(intr); 2472 device_printf(sc->acpi_dev, "power-off failed - timeout\n"); 2473 } 2474 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) { 2475 /* Reboot using the reset register. */ 2476 status = AcpiReset(); 2477 if (ACPI_SUCCESS(status)) { 2478 DELAY(1000000); 2479 device_printf(sc->acpi_dev, "reset failed - timeout\n"); 2480 } else if (status != AE_NOT_EXIST) 2481 device_printf(sc->acpi_dev, "reset failed - %s\n", 2482 AcpiFormatException(status)); 2483 } else if (sc->acpi_do_disable && !KERNEL_PANICKED()) { 2484 /* 2485 * Only disable ACPI if the user requested. On some systems, writing 2486 * the disable value to SMI_CMD hangs the system. 2487 */ 2488 device_printf(sc->acpi_dev, "Shutting down\n"); 2489 AcpiTerminate(); 2490 } 2491 } 2492 2493 static void 2494 acpi_enable_fixed_events(struct acpi_softc *sc) 2495 { 2496 static int first_time = 1; 2497 2498 /* Enable and clear fixed events and install handlers. */ 2499 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) { 2500 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 2501 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON, 2502 acpi_event_power_button_sleep, sc); 2503 if (first_time) 2504 device_printf(sc->acpi_dev, "Power Button (fixed)\n"); 2505 } 2506 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) { 2507 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 2508 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON, 2509 acpi_event_sleep_button_sleep, sc); 2510 if (first_time) 2511 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n"); 2512 } 2513 2514 first_time = 0; 2515 } 2516 2517 /* 2518 * Returns true if the device is actually present and should 2519 * be attached to. This requires the present, enabled, UI-visible 2520 * and diagnostics-passed bits to be set. 2521 */ 2522 BOOLEAN 2523 acpi_DeviceIsPresent(device_t dev) 2524 { 2525 ACPI_HANDLE h; 2526 UINT32 s; 2527 ACPI_STATUS status; 2528 2529 h = acpi_get_handle(dev); 2530 if (h == NULL) 2531 return (FALSE); 2532 2533 #ifdef ACPI_EARLY_EPYC_WAR 2534 /* 2535 * Certain Treadripper boards always returns 0 for FreeBSD because it 2536 * only returns non-zero for the OS string "Windows 2015". Otherwise it 2537 * will return zero. Force them to always be treated as present. 2538 * Beata versions were worse: they always returned 0. 2539 */ 2540 if (acpi_MatchHid(h, "AMDI0020") || acpi_MatchHid(h, "AMDI0010")) 2541 return (TRUE); 2542 #endif 2543 2544 status = acpi_GetInteger(h, "_STA", &s); 2545 2546 /* 2547 * If no _STA method or if it failed, then assume that 2548 * the device is present. 2549 */ 2550 if (ACPI_FAILURE(status)) 2551 return (TRUE); 2552 2553 return (ACPI_DEVICE_PRESENT(s) ? TRUE : FALSE); 2554 } 2555 2556 /* 2557 * Returns true if the battery is actually present and inserted. 2558 */ 2559 BOOLEAN 2560 acpi_BatteryIsPresent(device_t dev) 2561 { 2562 ACPI_HANDLE h; 2563 UINT32 s; 2564 ACPI_STATUS status; 2565 2566 h = acpi_get_handle(dev); 2567 if (h == NULL) 2568 return (FALSE); 2569 status = acpi_GetInteger(h, "_STA", &s); 2570 2571 /* 2572 * If no _STA method or if it failed, then assume that 2573 * the device is present. 2574 */ 2575 if (ACPI_FAILURE(status)) 2576 return (TRUE); 2577 2578 return (ACPI_BATTERY_PRESENT(s) ? TRUE : FALSE); 2579 } 2580 2581 /* 2582 * Returns true if a device has at least one valid device ID. 2583 */ 2584 BOOLEAN 2585 acpi_has_hid(ACPI_HANDLE h) 2586 { 2587 ACPI_DEVICE_INFO *devinfo; 2588 BOOLEAN ret; 2589 2590 if (h == NULL || 2591 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 2592 return (FALSE); 2593 2594 ret = FALSE; 2595 if ((devinfo->Valid & ACPI_VALID_HID) != 0) 2596 ret = TRUE; 2597 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) 2598 if (devinfo->CompatibleIdList.Count > 0) 2599 ret = TRUE; 2600 2601 AcpiOsFree(devinfo); 2602 return (ret); 2603 } 2604 2605 /* 2606 * Match a HID string against a handle 2607 * returns ACPI_MATCHHID_HID if _HID match 2608 * ACPI_MATCHHID_CID if _CID match and not _HID match. 2609 * ACPI_MATCHHID_NOMATCH=0 if no match. 2610 */ 2611 int 2612 acpi_MatchHid(ACPI_HANDLE h, const char *hid) 2613 { 2614 ACPI_DEVICE_INFO *devinfo; 2615 BOOLEAN ret; 2616 int i; 2617 2618 if (hid == NULL || h == NULL || 2619 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 2620 return (ACPI_MATCHHID_NOMATCH); 2621 2622 ret = ACPI_MATCHHID_NOMATCH; 2623 if ((devinfo->Valid & ACPI_VALID_HID) != 0 && 2624 strcmp(hid, devinfo->HardwareId.String) == 0) 2625 ret = ACPI_MATCHHID_HID; 2626 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) 2627 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) { 2628 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) { 2629 ret = ACPI_MATCHHID_CID; 2630 break; 2631 } 2632 } 2633 2634 AcpiOsFree(devinfo); 2635 return (ret); 2636 } 2637 2638 /* 2639 * Return the handle of a named object within our scope, ie. that of (parent) 2640 * or one if its parents. 2641 */ 2642 ACPI_STATUS 2643 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result) 2644 { 2645 ACPI_HANDLE r; 2646 ACPI_STATUS status; 2647 2648 /* Walk back up the tree to the root */ 2649 for (;;) { 2650 status = AcpiGetHandle(parent, path, &r); 2651 if (ACPI_SUCCESS(status)) { 2652 *result = r; 2653 return (AE_OK); 2654 } 2655 /* XXX Return error here? */ 2656 if (status != AE_NOT_FOUND) 2657 return (AE_OK); 2658 if (ACPI_FAILURE(AcpiGetParent(parent, &r))) 2659 return (AE_NOT_FOUND); 2660 parent = r; 2661 } 2662 } 2663 2664 ACPI_STATUS 2665 acpi_GetProperty(device_t dev, ACPI_STRING propname, 2666 const ACPI_OBJECT **value) 2667 { 2668 device_t bus = device_get_parent(dev); 2669 2670 return (ACPI_GET_PROPERTY(bus, dev, propname, value)); 2671 } 2672 2673 /* 2674 * Allocate a buffer with a preset data size. 2675 */ 2676 ACPI_BUFFER * 2677 acpi_AllocBuffer(int size) 2678 { 2679 ACPI_BUFFER *buf; 2680 2681 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL) 2682 return (NULL); 2683 buf->Length = size; 2684 buf->Pointer = (void *)(buf + 1); 2685 return (buf); 2686 } 2687 2688 ACPI_STATUS 2689 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number) 2690 { 2691 ACPI_OBJECT arg1; 2692 ACPI_OBJECT_LIST args; 2693 2694 arg1.Type = ACPI_TYPE_INTEGER; 2695 arg1.Integer.Value = number; 2696 args.Count = 1; 2697 args.Pointer = &arg1; 2698 2699 return (AcpiEvaluateObject(handle, path, &args, NULL)); 2700 } 2701 2702 /* 2703 * Evaluate a path that should return an integer. 2704 */ 2705 ACPI_STATUS 2706 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number) 2707 { 2708 ACPI_STATUS status; 2709 ACPI_BUFFER buf; 2710 ACPI_OBJECT param; 2711 2712 if (handle == NULL) 2713 handle = ACPI_ROOT_OBJECT; 2714 2715 /* 2716 * Assume that what we've been pointed at is an Integer object, or 2717 * a method that will return an Integer. 2718 */ 2719 buf.Pointer = ¶m; 2720 buf.Length = sizeof(param); 2721 status = AcpiEvaluateObject(handle, path, NULL, &buf); 2722 if (ACPI_SUCCESS(status)) { 2723 if (param.Type == ACPI_TYPE_INTEGER) 2724 *number = param.Integer.Value; 2725 else 2726 status = AE_TYPE; 2727 } 2728 2729 /* 2730 * In some applications, a method that's expected to return an Integer 2731 * may instead return a Buffer (probably to simplify some internal 2732 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer, 2733 * convert it into an Integer as best we can. 2734 * 2735 * This is a hack. 2736 */ 2737 if (status == AE_BUFFER_OVERFLOW) { 2738 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) { 2739 status = AE_NO_MEMORY; 2740 } else { 2741 status = AcpiEvaluateObject(handle, path, NULL, &buf); 2742 if (ACPI_SUCCESS(status)) 2743 status = acpi_ConvertBufferToInteger(&buf, number); 2744 AcpiOsFree(buf.Pointer); 2745 } 2746 } 2747 return (status); 2748 } 2749 2750 ACPI_STATUS 2751 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number) 2752 { 2753 ACPI_OBJECT *p; 2754 UINT8 *val; 2755 int i; 2756 2757 p = (ACPI_OBJECT *)bufp->Pointer; 2758 if (p->Type == ACPI_TYPE_INTEGER) { 2759 *number = p->Integer.Value; 2760 return (AE_OK); 2761 } 2762 if (p->Type != ACPI_TYPE_BUFFER) 2763 return (AE_TYPE); 2764 if (p->Buffer.Length > sizeof(int)) 2765 return (AE_BAD_DATA); 2766 2767 *number = 0; 2768 val = p->Buffer.Pointer; 2769 for (i = 0; i < p->Buffer.Length; i++) 2770 *number += val[i] << (i * 8); 2771 return (AE_OK); 2772 } 2773 2774 /* 2775 * Iterate over the elements of an a package object, calling the supplied 2776 * function for each element. 2777 * 2778 * XXX possible enhancement might be to abort traversal on error. 2779 */ 2780 ACPI_STATUS 2781 acpi_ForeachPackageObject(ACPI_OBJECT *pkg, 2782 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg) 2783 { 2784 ACPI_OBJECT *comp; 2785 int i; 2786 2787 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE) 2788 return (AE_BAD_PARAMETER); 2789 2790 /* Iterate over components */ 2791 i = 0; 2792 comp = pkg->Package.Elements; 2793 for (; i < pkg->Package.Count; i++, comp++) 2794 func(comp, arg); 2795 2796 return (AE_OK); 2797 } 2798 2799 /* 2800 * Find the (index)th resource object in a set. 2801 */ 2802 ACPI_STATUS 2803 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp) 2804 { 2805 ACPI_RESOURCE *rp; 2806 int i; 2807 2808 rp = (ACPI_RESOURCE *)buf->Pointer; 2809 i = index; 2810 while (i-- > 0) { 2811 /* Range check */ 2812 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 2813 return (AE_BAD_PARAMETER); 2814 2815 /* Check for terminator */ 2816 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0) 2817 return (AE_NOT_FOUND); 2818 rp = ACPI_NEXT_RESOURCE(rp); 2819 } 2820 if (resp != NULL) 2821 *resp = rp; 2822 2823 return (AE_OK); 2824 } 2825 2826 /* 2827 * Append an ACPI_RESOURCE to an ACPI_BUFFER. 2828 * 2829 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER 2830 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible 2831 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of 2832 * resources. 2833 */ 2834 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512 2835 2836 ACPI_STATUS 2837 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res) 2838 { 2839 ACPI_RESOURCE *rp; 2840 void *newp; 2841 2842 /* Initialise the buffer if necessary. */ 2843 if (buf->Pointer == NULL) { 2844 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE; 2845 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL) 2846 return (AE_NO_MEMORY); 2847 rp = (ACPI_RESOURCE *)buf->Pointer; 2848 rp->Type = ACPI_RESOURCE_TYPE_END_TAG; 2849 rp->Length = ACPI_RS_SIZE_MIN; 2850 } 2851 if (res == NULL) 2852 return (AE_OK); 2853 2854 /* 2855 * Scan the current buffer looking for the terminator. 2856 * This will either find the terminator or hit the end 2857 * of the buffer and return an error. 2858 */ 2859 rp = (ACPI_RESOURCE *)buf->Pointer; 2860 for (;;) { 2861 /* Range check, don't go outside the buffer */ 2862 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 2863 return (AE_BAD_PARAMETER); 2864 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0) 2865 break; 2866 rp = ACPI_NEXT_RESOURCE(rp); 2867 } 2868 2869 /* 2870 * Check the size of the buffer and expand if required. 2871 * 2872 * Required size is: 2873 * size of existing resources before terminator + 2874 * size of new resource and header + 2875 * size of terminator. 2876 * 2877 * Note that this loop should really only run once, unless 2878 * for some reason we are stuffing a *really* huge resource. 2879 */ 2880 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) + 2881 res->Length + ACPI_RS_SIZE_NO_DATA + 2882 ACPI_RS_SIZE_MIN) >= buf->Length) { 2883 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL) 2884 return (AE_NO_MEMORY); 2885 bcopy(buf->Pointer, newp, buf->Length); 2886 rp = (ACPI_RESOURCE *)((u_int8_t *)newp + 2887 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer)); 2888 AcpiOsFree(buf->Pointer); 2889 buf->Pointer = newp; 2890 buf->Length += buf->Length; 2891 } 2892 2893 /* Insert the new resource. */ 2894 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA); 2895 2896 /* And add the terminator. */ 2897 rp = ACPI_NEXT_RESOURCE(rp); 2898 rp->Type = ACPI_RESOURCE_TYPE_END_TAG; 2899 rp->Length = ACPI_RS_SIZE_MIN; 2900 2901 return (AE_OK); 2902 } 2903 2904 UINT64 2905 acpi_DSMQuery(ACPI_HANDLE h, const uint8_t *uuid, int revision) 2906 { 2907 /* 2908 * ACPI spec 9.1.1 defines this. 2909 * 2910 * "Arg2: Function Index Represents a specific function whose meaning is 2911 * specific to the UUID and Revision ID. Function indices should start 2912 * with 1. Function number zero is a query function (see the special 2913 * return code defined below)." 2914 */ 2915 ACPI_BUFFER buf; 2916 ACPI_OBJECT *obj; 2917 UINT64 ret = 0; 2918 int i; 2919 2920 if (!ACPI_SUCCESS(acpi_EvaluateDSM(h, uuid, revision, 0, NULL, &buf))) { 2921 ACPI_INFO(("Failed to enumerate DSM functions\n")); 2922 return (0); 2923 } 2924 2925 obj = (ACPI_OBJECT *)buf.Pointer; 2926 KASSERT(obj, ("Object not allowed to be NULL\n")); 2927 2928 /* 2929 * From ACPI 6.2 spec 9.1.1: 2930 * If Function Index = 0, a Buffer containing a function index bitfield. 2931 * Otherwise, the return value and type depends on the UUID and revision 2932 * ID (see below). 2933 */ 2934 switch (obj->Type) { 2935 case ACPI_TYPE_BUFFER: 2936 for (i = 0; i < MIN(obj->Buffer.Length, sizeof(ret)); i++) 2937 ret |= (((uint64_t)obj->Buffer.Pointer[i]) << (i * 8)); 2938 break; 2939 case ACPI_TYPE_INTEGER: 2940 ACPI_BIOS_WARNING((AE_INFO, 2941 "Possibly buggy BIOS with ACPI_TYPE_INTEGER for function enumeration\n")); 2942 ret = obj->Integer.Value; 2943 break; 2944 default: 2945 ACPI_WARNING((AE_INFO, "Unexpected return type %u\n", obj->Type)); 2946 }; 2947 2948 AcpiOsFree(obj); 2949 return ret; 2950 } 2951 2952 /* 2953 * DSM may return multiple types depending on the function. It is therefore 2954 * unsafe to use the typed evaluation. It is highly recommended that the caller 2955 * check the type of the returned object. 2956 */ 2957 ACPI_STATUS 2958 acpi_EvaluateDSM(ACPI_HANDLE handle, const uint8_t *uuid, int revision, 2959 UINT64 function, ACPI_OBJECT *package, ACPI_BUFFER *out_buf) 2960 { 2961 return (acpi_EvaluateDSMTyped(handle, uuid, revision, function, 2962 package, out_buf, ACPI_TYPE_ANY)); 2963 } 2964 2965 ACPI_STATUS 2966 acpi_EvaluateDSMTyped(ACPI_HANDLE handle, const uint8_t *uuid, int revision, 2967 UINT64 function, ACPI_OBJECT *package, ACPI_BUFFER *out_buf, 2968 ACPI_OBJECT_TYPE type) 2969 { 2970 ACPI_OBJECT arg[4]; 2971 ACPI_OBJECT_LIST arglist; 2972 ACPI_BUFFER buf; 2973 ACPI_STATUS status; 2974 2975 if (out_buf == NULL) 2976 return (AE_NO_MEMORY); 2977 2978 arg[0].Type = ACPI_TYPE_BUFFER; 2979 arg[0].Buffer.Length = ACPI_UUID_LENGTH; 2980 arg[0].Buffer.Pointer = __DECONST(uint8_t *, uuid); 2981 arg[1].Type = ACPI_TYPE_INTEGER; 2982 arg[1].Integer.Value = revision; 2983 arg[2].Type = ACPI_TYPE_INTEGER; 2984 arg[2].Integer.Value = function; 2985 if (package) { 2986 arg[3] = *package; 2987 } else { 2988 arg[3].Type = ACPI_TYPE_PACKAGE; 2989 arg[3].Package.Count = 0; 2990 arg[3].Package.Elements = NULL; 2991 } 2992 2993 arglist.Pointer = arg; 2994 arglist.Count = 4; 2995 buf.Pointer = NULL; 2996 buf.Length = ACPI_ALLOCATE_BUFFER; 2997 status = AcpiEvaluateObjectTyped(handle, "_DSM", &arglist, &buf, type); 2998 if (ACPI_FAILURE(status)) 2999 return (status); 3000 3001 KASSERT(ACPI_SUCCESS(status), ("Unexpected status")); 3002 3003 *out_buf = buf; 3004 return (status); 3005 } 3006 3007 ACPI_STATUS 3008 acpi_EvaluateOSC(ACPI_HANDLE handle, uint8_t *uuid, int revision, int count, 3009 uint32_t *caps_in, uint32_t *caps_out, bool query) 3010 { 3011 ACPI_OBJECT arg[4], *ret; 3012 ACPI_OBJECT_LIST arglist; 3013 ACPI_BUFFER buf; 3014 ACPI_STATUS status; 3015 3016 arglist.Pointer = arg; 3017 arglist.Count = 4; 3018 arg[0].Type = ACPI_TYPE_BUFFER; 3019 arg[0].Buffer.Length = ACPI_UUID_LENGTH; 3020 arg[0].Buffer.Pointer = uuid; 3021 arg[1].Type = ACPI_TYPE_INTEGER; 3022 arg[1].Integer.Value = revision; 3023 arg[2].Type = ACPI_TYPE_INTEGER; 3024 arg[2].Integer.Value = count; 3025 arg[3].Type = ACPI_TYPE_BUFFER; 3026 arg[3].Buffer.Length = count * sizeof(*caps_in); 3027 arg[3].Buffer.Pointer = (uint8_t *)caps_in; 3028 caps_in[0] = query ? 1 : 0; 3029 buf.Pointer = NULL; 3030 buf.Length = ACPI_ALLOCATE_BUFFER; 3031 status = AcpiEvaluateObjectTyped(handle, "_OSC", &arglist, &buf, 3032 ACPI_TYPE_BUFFER); 3033 if (ACPI_FAILURE(status)) 3034 return (status); 3035 if (caps_out != NULL) { 3036 ret = buf.Pointer; 3037 if (ret->Buffer.Length != count * sizeof(*caps_out)) { 3038 AcpiOsFree(buf.Pointer); 3039 return (AE_BUFFER_OVERFLOW); 3040 } 3041 bcopy(ret->Buffer.Pointer, caps_out, ret->Buffer.Length); 3042 } 3043 AcpiOsFree(buf.Pointer); 3044 return (status); 3045 } 3046 3047 /* 3048 * Set interrupt model. 3049 */ 3050 ACPI_STATUS 3051 acpi_SetIntrModel(int model) 3052 { 3053 3054 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model)); 3055 } 3056 3057 /* 3058 * Walk subtables of a table and call a callback routine for each 3059 * subtable. The caller should provide the first subtable and a 3060 * pointer to the end of the table. This can be used to walk tables 3061 * such as MADT and SRAT that use subtable entries. 3062 */ 3063 void 3064 acpi_walk_subtables(void *first, void *end, acpi_subtable_handler *handler, 3065 void *arg) 3066 { 3067 ACPI_SUBTABLE_HEADER *entry; 3068 3069 for (entry = first; (void *)entry < end; ) { 3070 /* Avoid an infinite loop if we hit a bogus entry. */ 3071 if (entry->Length < sizeof(ACPI_SUBTABLE_HEADER)) 3072 return; 3073 3074 handler(entry, arg); 3075 entry = ACPI_ADD_PTR(ACPI_SUBTABLE_HEADER, entry, entry->Length); 3076 } 3077 } 3078 3079 /* 3080 * DEPRECATED. This interface has serious deficiencies and will be 3081 * removed. 3082 * 3083 * Immediately enter the sleep state. In the old model, acpiconf(8) ran 3084 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this. 3085 */ 3086 ACPI_STATUS 3087 acpi_SetSleepState(struct acpi_softc *sc, int state) 3088 { 3089 static int once; 3090 3091 if (!once) { 3092 device_printf(sc->acpi_dev, 3093 "warning: acpi_SetSleepState() deprecated, need to update your software\n"); 3094 once = 1; 3095 } 3096 return (acpi_EnterSleepState(sc, state)); 3097 } 3098 3099 #if defined(__amd64__) || defined(__i386__) 3100 static void 3101 acpi_sleep_force_task(void *context) 3102 { 3103 struct acpi_softc *sc = (struct acpi_softc *)context; 3104 3105 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) 3106 device_printf(sc->acpi_dev, "force sleep state S%d failed\n", 3107 sc->acpi_next_sstate); 3108 } 3109 3110 static void 3111 acpi_sleep_force(void *arg) 3112 { 3113 struct acpi_softc *sc = (struct acpi_softc *)arg; 3114 3115 device_printf(sc->acpi_dev, 3116 "suspend request timed out, forcing sleep now\n"); 3117 /* 3118 * XXX Suspending from callout causes freezes in DEVICE_SUSPEND(). 3119 * Suspend from acpi_task thread instead. 3120 */ 3121 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3122 acpi_sleep_force_task, sc))) 3123 device_printf(sc->acpi_dev, "AcpiOsExecute() for sleeping failed\n"); 3124 } 3125 #endif 3126 3127 /* 3128 * Request that the system enter the given suspend state. All /dev/apm 3129 * devices and devd(8) will be notified. Userland then has a chance to 3130 * save state and acknowledge the request. The system sleeps once all 3131 * acks are in. 3132 */ 3133 int 3134 acpi_ReqSleepState(struct acpi_softc *sc, int state) 3135 { 3136 #if defined(__amd64__) || defined(__i386__) 3137 struct apm_clone_data *clone; 3138 ACPI_STATUS status; 3139 3140 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX) 3141 return (EINVAL); 3142 if (!acpi_sleep_states[state]) 3143 return (EOPNOTSUPP); 3144 3145 /* 3146 * If a reboot/shutdown/suspend request is already in progress or 3147 * suspend is blocked due to an upcoming shutdown, just return. 3148 */ 3149 if (rebooting || sc->acpi_next_sstate != 0 || suspend_blocked) { 3150 return (0); 3151 } 3152 3153 /* Wait until sleep is enabled. */ 3154 while (sc->acpi_sleep_disabled) { 3155 AcpiOsSleep(1000); 3156 } 3157 3158 ACPI_LOCK(acpi); 3159 3160 sc->acpi_next_sstate = state; 3161 3162 /* S5 (soft-off) should be entered directly with no waiting. */ 3163 if (state == ACPI_STATE_S5) { 3164 ACPI_UNLOCK(acpi); 3165 status = acpi_EnterSleepState(sc, state); 3166 return (ACPI_SUCCESS(status) ? 0 : ENXIO); 3167 } 3168 3169 /* Record the pending state and notify all apm devices. */ 3170 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) { 3171 clone->notify_status = APM_EV_NONE; 3172 if ((clone->flags & ACPI_EVF_DEVD) == 0) { 3173 selwakeuppri(&clone->sel_read, PZERO); 3174 KNOTE_LOCKED(&clone->sel_read.si_note, 0); 3175 } 3176 } 3177 3178 /* If devd(8) is not running, immediately enter the sleep state. */ 3179 if (!devctl_process_running()) { 3180 ACPI_UNLOCK(acpi); 3181 status = acpi_EnterSleepState(sc, state); 3182 return (ACPI_SUCCESS(status) ? 0 : ENXIO); 3183 } 3184 3185 /* 3186 * Set a timeout to fire if userland doesn't ack the suspend request 3187 * in time. This way we still eventually go to sleep if we were 3188 * overheating or running low on battery, even if userland is hung. 3189 * We cancel this timeout once all userland acks are in or the 3190 * suspend request is aborted. 3191 */ 3192 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc); 3193 ACPI_UNLOCK(acpi); 3194 3195 /* Now notify devd(8) also. */ 3196 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state); 3197 3198 return (0); 3199 #else 3200 /* This platform does not support acpi suspend/resume. */ 3201 return (EOPNOTSUPP); 3202 #endif 3203 } 3204 3205 /* 3206 * Acknowledge (or reject) a pending sleep state. The caller has 3207 * prepared for suspend and is now ready for it to proceed. If the 3208 * error argument is non-zero, it indicates suspend should be cancelled 3209 * and gives an errno value describing why. Once all votes are in, 3210 * we suspend the system. 3211 */ 3212 int 3213 acpi_AckSleepState(struct apm_clone_data *clone, int error) 3214 { 3215 #if defined(__amd64__) || defined(__i386__) 3216 struct acpi_softc *sc; 3217 int ret, sleeping; 3218 3219 /* If no pending sleep state, return an error. */ 3220 ACPI_LOCK(acpi); 3221 sc = clone->acpi_sc; 3222 if (sc->acpi_next_sstate == 0) { 3223 ACPI_UNLOCK(acpi); 3224 return (ENXIO); 3225 } 3226 3227 /* Caller wants to abort suspend process. */ 3228 if (error) { 3229 sc->acpi_next_sstate = 0; 3230 callout_stop(&sc->susp_force_to); 3231 device_printf(sc->acpi_dev, 3232 "listener on %s cancelled the pending suspend\n", 3233 devtoname(clone->cdev)); 3234 ACPI_UNLOCK(acpi); 3235 return (0); 3236 } 3237 3238 /* 3239 * Mark this device as acking the suspend request. Then, walk through 3240 * all devices, seeing if they agree yet. We only count devices that 3241 * are writable since read-only devices couldn't ack the request. 3242 */ 3243 sleeping = TRUE; 3244 clone->notify_status = APM_EV_ACKED; 3245 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) { 3246 if ((clone->flags & ACPI_EVF_WRITE) != 0 && 3247 clone->notify_status != APM_EV_ACKED) { 3248 sleeping = FALSE; 3249 break; 3250 } 3251 } 3252 3253 /* If all devices have voted "yes", we will suspend now. */ 3254 if (sleeping) 3255 callout_stop(&sc->susp_force_to); 3256 ACPI_UNLOCK(acpi); 3257 ret = 0; 3258 if (sleeping) { 3259 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) 3260 ret = ENODEV; 3261 } 3262 return (ret); 3263 #else 3264 /* This platform does not support acpi suspend/resume. */ 3265 return (EOPNOTSUPP); 3266 #endif 3267 } 3268 3269 static void 3270 acpi_sleep_enable(void *arg) 3271 { 3272 struct acpi_softc *sc = (struct acpi_softc *)arg; 3273 3274 ACPI_LOCK_ASSERT(acpi); 3275 3276 /* Reschedule if the system is not fully up and running. */ 3277 if (!AcpiGbl_SystemAwakeAndRunning) { 3278 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME); 3279 return; 3280 } 3281 3282 sc->acpi_sleep_disabled = FALSE; 3283 } 3284 3285 static ACPI_STATUS 3286 acpi_sleep_disable(struct acpi_softc *sc) 3287 { 3288 ACPI_STATUS status; 3289 3290 /* Fail if the system is not fully up and running. */ 3291 if (!AcpiGbl_SystemAwakeAndRunning) 3292 return (AE_ERROR); 3293 3294 ACPI_LOCK(acpi); 3295 status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK; 3296 sc->acpi_sleep_disabled = TRUE; 3297 ACPI_UNLOCK(acpi); 3298 3299 return (status); 3300 } 3301 3302 enum acpi_sleep_state { 3303 ACPI_SS_NONE, 3304 ACPI_SS_GPE_SET, 3305 ACPI_SS_DEV_SUSPEND, 3306 ACPI_SS_SLP_PREP, 3307 ACPI_SS_SLEPT, 3308 }; 3309 3310 /* 3311 * Enter the desired system sleep state. 3312 * 3313 * Currently we support S1-S5 but S4 is only S4BIOS 3314 */ 3315 static ACPI_STATUS 3316 acpi_EnterSleepState(struct acpi_softc *sc, int state) 3317 { 3318 register_t intr; 3319 ACPI_STATUS status; 3320 ACPI_EVENT_STATUS power_button_status; 3321 enum acpi_sleep_state slp_state; 3322 int sleep_result; 3323 3324 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 3325 3326 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX) 3327 return_ACPI_STATUS (AE_BAD_PARAMETER); 3328 if (!acpi_sleep_states[state]) { 3329 device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n", 3330 state); 3331 return (AE_SUPPORT); 3332 } 3333 3334 /* Re-entry once we're suspending is not allowed. */ 3335 status = acpi_sleep_disable(sc); 3336 if (ACPI_FAILURE(status)) { 3337 device_printf(sc->acpi_dev, 3338 "suspend request ignored (not ready yet)\n"); 3339 return (status); 3340 } 3341 3342 if (state == ACPI_STATE_S5) { 3343 /* 3344 * Shut down cleanly and power off. This will call us back through the 3345 * shutdown handlers. 3346 */ 3347 shutdown_nice(RB_POWEROFF); 3348 return_ACPI_STATUS (AE_OK); 3349 } 3350 3351 EVENTHANDLER_INVOKE(power_suspend_early); 3352 stop_all_proc(); 3353 suspend_all_fs(); 3354 EVENTHANDLER_INVOKE(power_suspend); 3355 3356 #ifdef EARLY_AP_STARTUP 3357 MPASS(mp_ncpus == 1 || smp_started); 3358 thread_lock(curthread); 3359 sched_bind(curthread, 0); 3360 thread_unlock(curthread); 3361 #else 3362 if (smp_started) { 3363 thread_lock(curthread); 3364 sched_bind(curthread, 0); 3365 thread_unlock(curthread); 3366 } 3367 #endif 3368 3369 /* 3370 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME 3371 */ 3372 bus_topo_lock(); 3373 3374 slp_state = ACPI_SS_NONE; 3375 3376 sc->acpi_sstate = state; 3377 3378 /* Enable any GPEs as appropriate and requested by the user. */ 3379 acpi_wake_prep_walk(state); 3380 slp_state = ACPI_SS_GPE_SET; 3381 3382 /* 3383 * Inform all devices that we are going to sleep. If at least one 3384 * device fails, DEVICE_SUSPEND() automatically resumes the tree. 3385 * 3386 * XXX Note that a better two-pass approach with a 'veto' pass 3387 * followed by a "real thing" pass would be better, but the current 3388 * bus interface does not provide for this. 3389 */ 3390 if (DEVICE_SUSPEND(root_bus) != 0) { 3391 device_printf(sc->acpi_dev, "device_suspend failed\n"); 3392 goto backout; 3393 } 3394 slp_state = ACPI_SS_DEV_SUSPEND; 3395 3396 status = AcpiEnterSleepStatePrep(state); 3397 if (ACPI_FAILURE(status)) { 3398 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 3399 AcpiFormatException(status)); 3400 goto backout; 3401 } 3402 slp_state = ACPI_SS_SLP_PREP; 3403 3404 if (sc->acpi_sleep_delay > 0) 3405 DELAY(sc->acpi_sleep_delay * 1000000); 3406 3407 suspendclock(); 3408 intr = intr_disable(); 3409 if (state != ACPI_STATE_S1) { 3410 sleep_result = acpi_sleep_machdep(sc, state); 3411 acpi_wakeup_machdep(sc, state, sleep_result, 0); 3412 3413 /* 3414 * XXX According to ACPI specification SCI_EN bit should be restored 3415 * by ACPI platform (BIOS, firmware) to its pre-sleep state. 3416 * Unfortunately some BIOSes fail to do that and that leads to 3417 * unexpected and serious consequences during wake up like a system 3418 * getting stuck in SMI handlers. 3419 * This hack is picked up from Linux, which claims that it follows 3420 * Windows behavior. 3421 */ 3422 if (sleep_result == 1 && state != ACPI_STATE_S4) 3423 AcpiWriteBitRegister(ACPI_BITREG_SCI_ENABLE, ACPI_ENABLE_EVENT); 3424 3425 if (sleep_result == 1 && state == ACPI_STATE_S3) { 3426 /* 3427 * Prevent mis-interpretation of the wakeup by power button 3428 * as a request for power off. 3429 * Ideally we should post an appropriate wakeup event, 3430 * perhaps using acpi_event_power_button_wake or alike. 3431 * 3432 * Clearing of power button status after wakeup is mandated 3433 * by ACPI specification in section "Fixed Power Button". 3434 * 3435 * XXX As of ACPICA 20121114 AcpiGetEventStatus provides 3436 * status as 0/1 corressponding to inactive/active despite 3437 * its type being ACPI_EVENT_STATUS. In other words, 3438 * we should not test for ACPI_EVENT_FLAG_SET for time being. 3439 */ 3440 if (ACPI_SUCCESS(AcpiGetEventStatus(ACPI_EVENT_POWER_BUTTON, 3441 &power_button_status)) && power_button_status != 0) { 3442 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 3443 device_printf(sc->acpi_dev, 3444 "cleared fixed power button status\n"); 3445 } 3446 } 3447 3448 intr_restore(intr); 3449 3450 /* call acpi_wakeup_machdep() again with interrupt enabled */ 3451 acpi_wakeup_machdep(sc, state, sleep_result, 1); 3452 3453 AcpiLeaveSleepStatePrep(state); 3454 3455 if (sleep_result == -1) 3456 goto backout; 3457 3458 /* Re-enable ACPI hardware on wakeup from sleep state 4. */ 3459 if (state == ACPI_STATE_S4) 3460 AcpiEnable(); 3461 } else { 3462 status = AcpiEnterSleepState(state); 3463 intr_restore(intr); 3464 AcpiLeaveSleepStatePrep(state); 3465 if (ACPI_FAILURE(status)) { 3466 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", 3467 AcpiFormatException(status)); 3468 goto backout; 3469 } 3470 } 3471 slp_state = ACPI_SS_SLEPT; 3472 3473 /* 3474 * Back out state according to how far along we got in the suspend 3475 * process. This handles both the error and success cases. 3476 */ 3477 backout: 3478 if (slp_state >= ACPI_SS_SLP_PREP) 3479 resumeclock(); 3480 if (slp_state >= ACPI_SS_GPE_SET) { 3481 acpi_wake_prep_walk(state); 3482 sc->acpi_sstate = ACPI_STATE_S0; 3483 } 3484 if (slp_state >= ACPI_SS_DEV_SUSPEND) 3485 DEVICE_RESUME(root_bus); 3486 if (slp_state >= ACPI_SS_SLP_PREP) 3487 AcpiLeaveSleepState(state); 3488 if (slp_state >= ACPI_SS_SLEPT) { 3489 #if defined(__i386__) || defined(__amd64__) 3490 /* NB: we are still using ACPI timecounter at this point. */ 3491 resume_TSC(); 3492 #endif 3493 acpi_resync_clock(sc); 3494 acpi_enable_fixed_events(sc); 3495 } 3496 sc->acpi_next_sstate = 0; 3497 3498 bus_topo_unlock(); 3499 3500 #ifdef EARLY_AP_STARTUP 3501 thread_lock(curthread); 3502 sched_unbind(curthread); 3503 thread_unlock(curthread); 3504 #else 3505 if (smp_started) { 3506 thread_lock(curthread); 3507 sched_unbind(curthread); 3508 thread_unlock(curthread); 3509 } 3510 #endif 3511 3512 resume_all_fs(); 3513 resume_all_proc(); 3514 3515 EVENTHANDLER_INVOKE(power_resume); 3516 3517 /* Allow another sleep request after a while. */ 3518 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME); 3519 3520 /* Run /etc/rc.resume after we are back. */ 3521 if (devctl_process_running()) 3522 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state); 3523 3524 return_ACPI_STATUS (status); 3525 } 3526 3527 static void 3528 acpi_resync_clock(struct acpi_softc *sc) 3529 { 3530 3531 /* 3532 * Warm up timecounter again and reset system clock. 3533 */ 3534 (void)timecounter->tc_get_timecount(timecounter); 3535 inittodr(time_second + sc->acpi_sleep_delay); 3536 } 3537 3538 /* Enable or disable the device's wake GPE. */ 3539 int 3540 acpi_wake_set_enable(device_t dev, int enable) 3541 { 3542 struct acpi_prw_data prw; 3543 ACPI_STATUS status; 3544 int flags; 3545 3546 /* Make sure the device supports waking the system and get the GPE. */ 3547 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0) 3548 return (ENXIO); 3549 3550 flags = acpi_get_flags(dev); 3551 if (enable) { 3552 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, 3553 ACPI_GPE_ENABLE); 3554 if (ACPI_FAILURE(status)) { 3555 device_printf(dev, "enable wake failed\n"); 3556 return (ENXIO); 3557 } 3558 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED); 3559 } else { 3560 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, 3561 ACPI_GPE_DISABLE); 3562 if (ACPI_FAILURE(status)) { 3563 device_printf(dev, "disable wake failed\n"); 3564 return (ENXIO); 3565 } 3566 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED); 3567 } 3568 3569 return (0); 3570 } 3571 3572 static int 3573 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate) 3574 { 3575 struct acpi_prw_data prw; 3576 device_t dev; 3577 3578 /* Check that this is a wake-capable device and get its GPE. */ 3579 if (acpi_parse_prw(handle, &prw) != 0) 3580 return (ENXIO); 3581 dev = acpi_get_device(handle); 3582 3583 /* 3584 * The destination sleep state must be less than (i.e., higher power) 3585 * or equal to the value specified by _PRW. If this GPE cannot be 3586 * enabled for the next sleep state, then disable it. If it can and 3587 * the user requested it be enabled, turn on any required power resources 3588 * and set _PSW. 3589 */ 3590 if (sstate > prw.lowest_wake) { 3591 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE); 3592 if (bootverbose) 3593 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n", 3594 acpi_name(handle), sstate); 3595 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) { 3596 acpi_pwr_wake_enable(handle, 1); 3597 acpi_SetInteger(handle, "_PSW", 1); 3598 if (bootverbose) 3599 device_printf(dev, "wake_prep enabled for %s (S%d)\n", 3600 acpi_name(handle), sstate); 3601 } 3602 3603 return (0); 3604 } 3605 3606 static int 3607 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate) 3608 { 3609 struct acpi_prw_data prw; 3610 device_t dev; 3611 3612 /* 3613 * Check that this is a wake-capable device and get its GPE. Return 3614 * now if the user didn't enable this device for wake. 3615 */ 3616 if (acpi_parse_prw(handle, &prw) != 0) 3617 return (ENXIO); 3618 dev = acpi_get_device(handle); 3619 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0) 3620 return (0); 3621 3622 /* 3623 * If this GPE couldn't be enabled for the previous sleep state, it was 3624 * disabled before going to sleep so re-enable it. If it was enabled, 3625 * clear _PSW and turn off any power resources it used. 3626 */ 3627 if (sstate > prw.lowest_wake) { 3628 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE); 3629 if (bootverbose) 3630 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle)); 3631 } else { 3632 acpi_SetInteger(handle, "_PSW", 0); 3633 acpi_pwr_wake_enable(handle, 0); 3634 if (bootverbose) 3635 device_printf(dev, "run_prep cleaned up for %s\n", 3636 acpi_name(handle)); 3637 } 3638 3639 return (0); 3640 } 3641 3642 static ACPI_STATUS 3643 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 3644 { 3645 int sstate; 3646 3647 /* If suspending, run the sleep prep function, otherwise wake. */ 3648 sstate = *(int *)context; 3649 if (AcpiGbl_SystemAwakeAndRunning) 3650 acpi_wake_sleep_prep(handle, sstate); 3651 else 3652 acpi_wake_run_prep(handle, sstate); 3653 return (AE_OK); 3654 } 3655 3656 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */ 3657 static int 3658 acpi_wake_prep_walk(int sstate) 3659 { 3660 ACPI_HANDLE sb_handle; 3661 3662 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) 3663 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100, 3664 acpi_wake_prep, NULL, &sstate, NULL); 3665 return (0); 3666 } 3667 3668 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */ 3669 static int 3670 acpi_wake_sysctl_walk(device_t dev) 3671 { 3672 int error, i, numdevs; 3673 device_t *devlist; 3674 device_t child; 3675 ACPI_STATUS status; 3676 3677 error = device_get_children(dev, &devlist, &numdevs); 3678 if (error != 0 || numdevs == 0) { 3679 if (numdevs == 0) 3680 free(devlist, M_TEMP); 3681 return (error); 3682 } 3683 for (i = 0; i < numdevs; i++) { 3684 child = devlist[i]; 3685 acpi_wake_sysctl_walk(child); 3686 if (!device_is_attached(child)) 3687 continue; 3688 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL); 3689 if (ACPI_SUCCESS(status)) { 3690 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child), 3691 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO, 3692 "wake", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, child, 0, 3693 acpi_wake_set_sysctl, "I", "Device set to wake the system"); 3694 } 3695 } 3696 free(devlist, M_TEMP); 3697 3698 return (0); 3699 } 3700 3701 /* Enable or disable wake from userland. */ 3702 static int 3703 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS) 3704 { 3705 int enable, error; 3706 device_t dev; 3707 3708 dev = (device_t)arg1; 3709 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0; 3710 3711 error = sysctl_handle_int(oidp, &enable, 0, req); 3712 if (error != 0 || req->newptr == NULL) 3713 return (error); 3714 if (enable != 0 && enable != 1) 3715 return (EINVAL); 3716 3717 return (acpi_wake_set_enable(dev, enable)); 3718 } 3719 3720 /* Parse a device's _PRW into a structure. */ 3721 int 3722 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw) 3723 { 3724 ACPI_STATUS status; 3725 ACPI_BUFFER prw_buffer; 3726 ACPI_OBJECT *res, *res2; 3727 int error, i, power_count; 3728 3729 if (h == NULL || prw == NULL) 3730 return (EINVAL); 3731 3732 /* 3733 * The _PRW object (7.2.9) is only required for devices that have the 3734 * ability to wake the system from a sleeping state. 3735 */ 3736 error = EINVAL; 3737 prw_buffer.Pointer = NULL; 3738 prw_buffer.Length = ACPI_ALLOCATE_BUFFER; 3739 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer); 3740 if (ACPI_FAILURE(status)) 3741 return (ENOENT); 3742 res = (ACPI_OBJECT *)prw_buffer.Pointer; 3743 if (res == NULL) 3744 return (ENOENT); 3745 if (!ACPI_PKG_VALID(res, 2)) 3746 goto out; 3747 3748 /* 3749 * Element 1 of the _PRW object: 3750 * The lowest power system sleeping state that can be entered while still 3751 * providing wake functionality. The sleeping state being entered must 3752 * be less than (i.e., higher power) or equal to this value. 3753 */ 3754 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0) 3755 goto out; 3756 3757 /* 3758 * Element 0 of the _PRW object: 3759 */ 3760 switch (res->Package.Elements[0].Type) { 3761 case ACPI_TYPE_INTEGER: 3762 /* 3763 * If the data type of this package element is numeric, then this 3764 * _PRW package element is the bit index in the GPEx_EN, in the 3765 * GPE blocks described in the FADT, of the enable bit that is 3766 * enabled for the wake event. 3767 */ 3768 prw->gpe_handle = NULL; 3769 prw->gpe_bit = res->Package.Elements[0].Integer.Value; 3770 error = 0; 3771 break; 3772 case ACPI_TYPE_PACKAGE: 3773 /* 3774 * If the data type of this package element is a package, then this 3775 * _PRW package element is itself a package containing two 3776 * elements. The first is an object reference to the GPE Block 3777 * device that contains the GPE that will be triggered by the wake 3778 * event. The second element is numeric and it contains the bit 3779 * index in the GPEx_EN, in the GPE Block referenced by the 3780 * first element in the package, of the enable bit that is enabled for 3781 * the wake event. 3782 * 3783 * For example, if this field is a package then it is of the form: 3784 * Package() {\_SB.PCI0.ISA.GPE, 2} 3785 */ 3786 res2 = &res->Package.Elements[0]; 3787 if (!ACPI_PKG_VALID(res2, 2)) 3788 goto out; 3789 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]); 3790 if (prw->gpe_handle == NULL) 3791 goto out; 3792 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0) 3793 goto out; 3794 error = 0; 3795 break; 3796 default: 3797 goto out; 3798 } 3799 3800 /* Elements 2 to N of the _PRW object are power resources. */ 3801 power_count = res->Package.Count - 2; 3802 if (power_count > ACPI_PRW_MAX_POWERRES) { 3803 printf("ACPI device %s has too many power resources\n", acpi_name(h)); 3804 power_count = 0; 3805 } 3806 prw->power_res_count = power_count; 3807 for (i = 0; i < power_count; i++) 3808 prw->power_res[i] = res->Package.Elements[i]; 3809 3810 out: 3811 if (prw_buffer.Pointer != NULL) 3812 AcpiOsFree(prw_buffer.Pointer); 3813 return (error); 3814 } 3815 3816 /* 3817 * ACPI Event Handlers 3818 */ 3819 3820 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */ 3821 3822 static void 3823 acpi_system_eventhandler_sleep(void *arg, int state) 3824 { 3825 struct acpi_softc *sc = (struct acpi_softc *)arg; 3826 int ret; 3827 3828 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 3829 3830 /* Check if button action is disabled or unknown. */ 3831 if (state == ACPI_STATE_UNKNOWN) 3832 return; 3833 3834 /* Request that the system prepare to enter the given suspend state. */ 3835 ret = acpi_ReqSleepState(sc, state); 3836 if (ret != 0) 3837 device_printf(sc->acpi_dev, 3838 "request to enter state S%d failed (err %d)\n", state, ret); 3839 3840 return_VOID; 3841 } 3842 3843 static void 3844 acpi_system_eventhandler_wakeup(void *arg, int state) 3845 { 3846 3847 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 3848 3849 /* Currently, nothing to do for wakeup. */ 3850 3851 return_VOID; 3852 } 3853 3854 /* 3855 * ACPICA Event Handlers (FixedEvent, also called from button notify handler) 3856 */ 3857 static void 3858 acpi_invoke_sleep_eventhandler(void *context) 3859 { 3860 3861 EVENTHANDLER_INVOKE(acpi_sleep_event, *(int *)context); 3862 } 3863 3864 static void 3865 acpi_invoke_wake_eventhandler(void *context) 3866 { 3867 3868 EVENTHANDLER_INVOKE(acpi_wakeup_event, *(int *)context); 3869 } 3870 3871 UINT32 3872 acpi_event_power_button_sleep(void *context) 3873 { 3874 struct acpi_softc *sc = (struct acpi_softc *)context; 3875 3876 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3877 3878 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3879 acpi_invoke_sleep_eventhandler, &sc->acpi_power_button_sx))) 3880 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3881 return_VALUE (ACPI_INTERRUPT_HANDLED); 3882 } 3883 3884 UINT32 3885 acpi_event_power_button_wake(void *context) 3886 { 3887 struct acpi_softc *sc = (struct acpi_softc *)context; 3888 3889 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3890 3891 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3892 acpi_invoke_wake_eventhandler, &sc->acpi_power_button_sx))) 3893 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3894 return_VALUE (ACPI_INTERRUPT_HANDLED); 3895 } 3896 3897 UINT32 3898 acpi_event_sleep_button_sleep(void *context) 3899 { 3900 struct acpi_softc *sc = (struct acpi_softc *)context; 3901 3902 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3903 3904 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3905 acpi_invoke_sleep_eventhandler, &sc->acpi_sleep_button_sx))) 3906 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3907 return_VALUE (ACPI_INTERRUPT_HANDLED); 3908 } 3909 3910 UINT32 3911 acpi_event_sleep_button_wake(void *context) 3912 { 3913 struct acpi_softc *sc = (struct acpi_softc *)context; 3914 3915 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3916 3917 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3918 acpi_invoke_wake_eventhandler, &sc->acpi_sleep_button_sx))) 3919 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3920 return_VALUE (ACPI_INTERRUPT_HANDLED); 3921 } 3922 3923 /* 3924 * XXX This static buffer is suboptimal. There is no locking so only 3925 * use this for single-threaded callers. 3926 */ 3927 char * 3928 acpi_name(ACPI_HANDLE handle) 3929 { 3930 ACPI_BUFFER buf; 3931 static char data[256]; 3932 3933 buf.Length = sizeof(data); 3934 buf.Pointer = data; 3935 3936 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf))) 3937 return (data); 3938 return ("(unknown)"); 3939 } 3940 3941 /* 3942 * Debugging/bug-avoidance. Avoid trying to fetch info on various 3943 * parts of the namespace. 3944 */ 3945 int 3946 acpi_avoid(ACPI_HANDLE handle) 3947 { 3948 char *cp, *env, *np; 3949 int len; 3950 3951 np = acpi_name(handle); 3952 if (*np == '\\') 3953 np++; 3954 if ((env = kern_getenv("debug.acpi.avoid")) == NULL) 3955 return (0); 3956 3957 /* Scan the avoid list checking for a match */ 3958 cp = env; 3959 for (;;) { 3960 while (*cp != 0 && isspace(*cp)) 3961 cp++; 3962 if (*cp == 0) 3963 break; 3964 len = 0; 3965 while (cp[len] != 0 && !isspace(cp[len])) 3966 len++; 3967 if (!strncmp(cp, np, len)) { 3968 freeenv(env); 3969 return(1); 3970 } 3971 cp += len; 3972 } 3973 freeenv(env); 3974 3975 return (0); 3976 } 3977 3978 /* 3979 * Debugging/bug-avoidance. Disable ACPI subsystem components. 3980 */ 3981 int 3982 acpi_disabled(char *subsys) 3983 { 3984 char *cp, *env; 3985 int len; 3986 3987 if ((env = kern_getenv("debug.acpi.disabled")) == NULL) 3988 return (0); 3989 if (strcmp(env, "all") == 0) { 3990 freeenv(env); 3991 return (1); 3992 } 3993 3994 /* Scan the disable list, checking for a match. */ 3995 cp = env; 3996 for (;;) { 3997 while (*cp != '\0' && isspace(*cp)) 3998 cp++; 3999 if (*cp == '\0') 4000 break; 4001 len = 0; 4002 while (cp[len] != '\0' && !isspace(cp[len])) 4003 len++; 4004 if (strncmp(cp, subsys, len) == 0) { 4005 freeenv(env); 4006 return (1); 4007 } 4008 cp += len; 4009 } 4010 freeenv(env); 4011 4012 return (0); 4013 } 4014 4015 static void 4016 acpi_lookup(void *arg, const char *name, device_t *dev) 4017 { 4018 ACPI_HANDLE handle; 4019 4020 if (*dev != NULL) 4021 return; 4022 4023 /* 4024 * Allow any handle name that is specified as an absolute path and 4025 * starts with '\'. We could restrict this to \_SB and friends, 4026 * but see acpi_probe_children() for notes on why we scan the entire 4027 * namespace for devices. 4028 * 4029 * XXX: The pathname argument to AcpiGetHandle() should be fixed to 4030 * be const. 4031 */ 4032 if (name[0] != '\\') 4033 return; 4034 if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, __DECONST(char *, name), 4035 &handle))) 4036 return; 4037 *dev = acpi_get_device(handle); 4038 } 4039 4040 /* 4041 * Control interface. 4042 * 4043 * We multiplex ioctls for all participating ACPI devices here. Individual 4044 * drivers wanting to be accessible via /dev/acpi should use the 4045 * register/deregister interface to make their handlers visible. 4046 */ 4047 struct acpi_ioctl_hook 4048 { 4049 TAILQ_ENTRY(acpi_ioctl_hook) link; 4050 u_long cmd; 4051 acpi_ioctl_fn fn; 4052 void *arg; 4053 }; 4054 4055 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks; 4056 static int acpi_ioctl_hooks_initted; 4057 4058 int 4059 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg) 4060 { 4061 struct acpi_ioctl_hook *hp; 4062 4063 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL) 4064 return (ENOMEM); 4065 hp->cmd = cmd; 4066 hp->fn = fn; 4067 hp->arg = arg; 4068 4069 ACPI_LOCK(acpi); 4070 if (acpi_ioctl_hooks_initted == 0) { 4071 TAILQ_INIT(&acpi_ioctl_hooks); 4072 acpi_ioctl_hooks_initted = 1; 4073 } 4074 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link); 4075 ACPI_UNLOCK(acpi); 4076 4077 return (0); 4078 } 4079 4080 void 4081 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn) 4082 { 4083 struct acpi_ioctl_hook *hp; 4084 4085 ACPI_LOCK(acpi); 4086 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) 4087 if (hp->cmd == cmd && hp->fn == fn) 4088 break; 4089 4090 if (hp != NULL) { 4091 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link); 4092 free(hp, M_ACPIDEV); 4093 } 4094 ACPI_UNLOCK(acpi); 4095 } 4096 4097 static int 4098 acpiopen(struct cdev *dev, int flag, int fmt, struct thread *td) 4099 { 4100 return (0); 4101 } 4102 4103 static int 4104 acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td) 4105 { 4106 return (0); 4107 } 4108 4109 static int 4110 acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 4111 { 4112 struct acpi_softc *sc; 4113 struct acpi_ioctl_hook *hp; 4114 int error, state; 4115 4116 error = 0; 4117 hp = NULL; 4118 sc = dev->si_drv1; 4119 4120 /* 4121 * Scan the list of registered ioctls, looking for handlers. 4122 */ 4123 ACPI_LOCK(acpi); 4124 if (acpi_ioctl_hooks_initted) 4125 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) { 4126 if (hp->cmd == cmd) 4127 break; 4128 } 4129 ACPI_UNLOCK(acpi); 4130 if (hp) 4131 return (hp->fn(cmd, addr, hp->arg)); 4132 4133 /* 4134 * Core ioctls are not permitted for non-writable user. 4135 * Currently, other ioctls just fetch information. 4136 * Not changing system behavior. 4137 */ 4138 if ((flag & FWRITE) == 0) 4139 return (EPERM); 4140 4141 /* Core system ioctls. */ 4142 switch (cmd) { 4143 case ACPIIO_REQSLPSTATE: 4144 state = *(int *)addr; 4145 if (state != ACPI_STATE_S5) 4146 return (acpi_ReqSleepState(sc, state)); 4147 device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n"); 4148 error = EOPNOTSUPP; 4149 break; 4150 case ACPIIO_ACKSLPSTATE: 4151 error = *(int *)addr; 4152 error = acpi_AckSleepState(sc->acpi_clone, error); 4153 break; 4154 case ACPIIO_SETSLPSTATE: /* DEPRECATED */ 4155 state = *(int *)addr; 4156 if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX) 4157 return (EINVAL); 4158 if (!acpi_sleep_states[state]) 4159 return (EOPNOTSUPP); 4160 if (ACPI_FAILURE(acpi_SetSleepState(sc, state))) 4161 error = ENXIO; 4162 break; 4163 default: 4164 error = ENXIO; 4165 break; 4166 } 4167 4168 return (error); 4169 } 4170 4171 static int 4172 acpi_sname2sstate(const char *sname) 4173 { 4174 int sstate; 4175 4176 if (toupper(sname[0]) == 'S') { 4177 sstate = sname[1] - '0'; 4178 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 && 4179 sname[2] == '\0') 4180 return (sstate); 4181 } else if (strcasecmp(sname, "NONE") == 0) 4182 return (ACPI_STATE_UNKNOWN); 4183 return (-1); 4184 } 4185 4186 static const char * 4187 acpi_sstate2sname(int sstate) 4188 { 4189 static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" }; 4190 4191 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5) 4192 return (snames[sstate]); 4193 else if (sstate == ACPI_STATE_UNKNOWN) 4194 return ("NONE"); 4195 return (NULL); 4196 } 4197 4198 static int 4199 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 4200 { 4201 int error; 4202 struct sbuf sb; 4203 UINT8 state; 4204 4205 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND); 4206 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++) 4207 if (acpi_sleep_states[state]) 4208 sbuf_printf(&sb, "%s ", acpi_sstate2sname(state)); 4209 sbuf_trim(&sb); 4210 sbuf_finish(&sb); 4211 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req); 4212 sbuf_delete(&sb); 4213 return (error); 4214 } 4215 4216 static int 4217 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 4218 { 4219 char sleep_state[10]; 4220 int error, new_state, old_state; 4221 4222 old_state = *(int *)oidp->oid_arg1; 4223 strlcpy(sleep_state, acpi_sstate2sname(old_state), sizeof(sleep_state)); 4224 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req); 4225 if (error == 0 && req->newptr != NULL) { 4226 new_state = acpi_sname2sstate(sleep_state); 4227 if (new_state < ACPI_STATE_S1) 4228 return (EINVAL); 4229 if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state]) 4230 return (EOPNOTSUPP); 4231 if (new_state != old_state) 4232 *(int *)oidp->oid_arg1 = new_state; 4233 } 4234 return (error); 4235 } 4236 4237 /* Inform devctl(4) when we receive a Notify. */ 4238 void 4239 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify) 4240 { 4241 char notify_buf[16]; 4242 ACPI_BUFFER handle_buf; 4243 ACPI_STATUS status; 4244 4245 if (subsystem == NULL) 4246 return; 4247 4248 handle_buf.Pointer = NULL; 4249 handle_buf.Length = ACPI_ALLOCATE_BUFFER; 4250 status = AcpiNsHandleToPathname(h, &handle_buf, FALSE); 4251 if (ACPI_FAILURE(status)) 4252 return; 4253 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify); 4254 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf); 4255 AcpiOsFree(handle_buf.Pointer); 4256 } 4257 4258 #ifdef ACPI_DEBUG 4259 /* 4260 * Support for parsing debug options from the kernel environment. 4261 * 4262 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers 4263 * by specifying the names of the bits in the debug.acpi.layer and 4264 * debug.acpi.level environment variables. Bits may be unset by 4265 * prefixing the bit name with !. 4266 */ 4267 struct debugtag 4268 { 4269 char *name; 4270 UINT32 value; 4271 }; 4272 4273 static struct debugtag dbg_layer[] = { 4274 {"ACPI_UTILITIES", ACPI_UTILITIES}, 4275 {"ACPI_HARDWARE", ACPI_HARDWARE}, 4276 {"ACPI_EVENTS", ACPI_EVENTS}, 4277 {"ACPI_TABLES", ACPI_TABLES}, 4278 {"ACPI_NAMESPACE", ACPI_NAMESPACE}, 4279 {"ACPI_PARSER", ACPI_PARSER}, 4280 {"ACPI_DISPATCHER", ACPI_DISPATCHER}, 4281 {"ACPI_EXECUTER", ACPI_EXECUTER}, 4282 {"ACPI_RESOURCES", ACPI_RESOURCES}, 4283 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER}, 4284 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES}, 4285 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER}, 4286 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS}, 4287 4288 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER}, 4289 {"ACPI_BATTERY", ACPI_BATTERY}, 4290 {"ACPI_BUS", ACPI_BUS}, 4291 {"ACPI_BUTTON", ACPI_BUTTON}, 4292 {"ACPI_EC", ACPI_EC}, 4293 {"ACPI_FAN", ACPI_FAN}, 4294 {"ACPI_POWERRES", ACPI_POWERRES}, 4295 {"ACPI_PROCESSOR", ACPI_PROCESSOR}, 4296 {"ACPI_THERMAL", ACPI_THERMAL}, 4297 {"ACPI_TIMER", ACPI_TIMER}, 4298 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS}, 4299 {NULL, 0} 4300 }; 4301 4302 static struct debugtag dbg_level[] = { 4303 {"ACPI_LV_INIT", ACPI_LV_INIT}, 4304 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT}, 4305 {"ACPI_LV_INFO", ACPI_LV_INFO}, 4306 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR}, 4307 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS}, 4308 4309 /* Trace verbosity level 1 [Standard Trace Level] */ 4310 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES}, 4311 {"ACPI_LV_PARSE", ACPI_LV_PARSE}, 4312 {"ACPI_LV_LOAD", ACPI_LV_LOAD}, 4313 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH}, 4314 {"ACPI_LV_EXEC", ACPI_LV_EXEC}, 4315 {"ACPI_LV_NAMES", ACPI_LV_NAMES}, 4316 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION}, 4317 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD}, 4318 {"ACPI_LV_TABLES", ACPI_LV_TABLES}, 4319 {"ACPI_LV_VALUES", ACPI_LV_VALUES}, 4320 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS}, 4321 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES}, 4322 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS}, 4323 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE}, 4324 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1}, 4325 4326 /* Trace verbosity level 2 [Function tracing and memory allocation] */ 4327 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS}, 4328 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS}, 4329 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS}, 4330 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2}, 4331 {"ACPI_LV_ALL", ACPI_LV_ALL}, 4332 4333 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */ 4334 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX}, 4335 {"ACPI_LV_THREADS", ACPI_LV_THREADS}, 4336 {"ACPI_LV_IO", ACPI_LV_IO}, 4337 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS}, 4338 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3}, 4339 4340 /* Exceptionally verbose output -- also used in the global "DebugLevel" */ 4341 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE}, 4342 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO}, 4343 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES}, 4344 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS}, 4345 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE}, 4346 {NULL, 0} 4347 }; 4348 4349 static void 4350 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag) 4351 { 4352 char *ep; 4353 int i, l; 4354 int set; 4355 4356 while (*cp) { 4357 if (isspace(*cp)) { 4358 cp++; 4359 continue; 4360 } 4361 ep = cp; 4362 while (*ep && !isspace(*ep)) 4363 ep++; 4364 if (*cp == '!') { 4365 set = 0; 4366 cp++; 4367 if (cp == ep) 4368 continue; 4369 } else { 4370 set = 1; 4371 } 4372 l = ep - cp; 4373 for (i = 0; tag[i].name != NULL; i++) { 4374 if (!strncmp(cp, tag[i].name, l)) { 4375 if (set) 4376 *flag |= tag[i].value; 4377 else 4378 *flag &= ~tag[i].value; 4379 } 4380 } 4381 cp = ep; 4382 } 4383 } 4384 4385 static void 4386 acpi_set_debugging(void *junk) 4387 { 4388 char *layer, *level; 4389 4390 if (cold) { 4391 AcpiDbgLayer = 0; 4392 AcpiDbgLevel = 0; 4393 } 4394 4395 layer = kern_getenv("debug.acpi.layer"); 4396 level = kern_getenv("debug.acpi.level"); 4397 if (layer == NULL && level == NULL) 4398 return; 4399 4400 printf("ACPI set debug"); 4401 if (layer != NULL) { 4402 if (strcmp("NONE", layer) != 0) 4403 printf(" layer '%s'", layer); 4404 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer); 4405 freeenv(layer); 4406 } 4407 if (level != NULL) { 4408 if (strcmp("NONE", level) != 0) 4409 printf(" level '%s'", level); 4410 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel); 4411 freeenv(level); 4412 } 4413 printf("\n"); 4414 } 4415 4416 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging, 4417 NULL); 4418 4419 static int 4420 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS) 4421 { 4422 int error, *dbg; 4423 struct debugtag *tag; 4424 struct sbuf sb; 4425 char temp[128]; 4426 4427 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL) 4428 return (ENOMEM); 4429 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) { 4430 tag = &dbg_layer[0]; 4431 dbg = &AcpiDbgLayer; 4432 } else { 4433 tag = &dbg_level[0]; 4434 dbg = &AcpiDbgLevel; 4435 } 4436 4437 /* Get old values if this is a get request. */ 4438 ACPI_SERIAL_BEGIN(acpi); 4439 if (*dbg == 0) { 4440 sbuf_cpy(&sb, "NONE"); 4441 } else if (req->newptr == NULL) { 4442 for (; tag->name != NULL; tag++) { 4443 if ((*dbg & tag->value) == tag->value) 4444 sbuf_printf(&sb, "%s ", tag->name); 4445 } 4446 } 4447 sbuf_trim(&sb); 4448 sbuf_finish(&sb); 4449 strlcpy(temp, sbuf_data(&sb), sizeof(temp)); 4450 sbuf_delete(&sb); 4451 4452 error = sysctl_handle_string(oidp, temp, sizeof(temp), req); 4453 4454 /* Check for error or no change */ 4455 if (error == 0 && req->newptr != NULL) { 4456 *dbg = 0; 4457 kern_setenv((char *)oidp->oid_arg1, temp); 4458 acpi_set_debugging(NULL); 4459 } 4460 ACPI_SERIAL_END(acpi); 4461 4462 return (error); 4463 } 4464 4465 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, 4466 CTLFLAG_RW | CTLTYPE_STRING | CTLFLAG_MPSAFE, "debug.acpi.layer", 0, 4467 acpi_debug_sysctl, "A", 4468 ""); 4469 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, 4470 CTLFLAG_RW | CTLTYPE_STRING | CTLFLAG_MPSAFE, "debug.acpi.level", 0, 4471 acpi_debug_sysctl, "A", 4472 ""); 4473 #endif /* ACPI_DEBUG */ 4474 4475 static int 4476 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS) 4477 { 4478 int error; 4479 int old; 4480 4481 old = acpi_debug_objects; 4482 error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req); 4483 if (error != 0 || req->newptr == NULL) 4484 return (error); 4485 if (old == acpi_debug_objects || (old && acpi_debug_objects)) 4486 return (0); 4487 4488 ACPI_SERIAL_BEGIN(acpi); 4489 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE; 4490 ACPI_SERIAL_END(acpi); 4491 4492 return (0); 4493 } 4494 4495 static int 4496 acpi_parse_interfaces(char *str, struct acpi_interface *iface) 4497 { 4498 char *p; 4499 size_t len; 4500 int i, j; 4501 4502 p = str; 4503 while (isspace(*p) || *p == ',') 4504 p++; 4505 len = strlen(p); 4506 if (len == 0) 4507 return (0); 4508 p = strdup(p, M_TEMP); 4509 for (i = 0; i < len; i++) 4510 if (p[i] == ',') 4511 p[i] = '\0'; 4512 i = j = 0; 4513 while (i < len) 4514 if (isspace(p[i]) || p[i] == '\0') 4515 i++; 4516 else { 4517 i += strlen(p + i) + 1; 4518 j++; 4519 } 4520 if (j == 0) { 4521 free(p, M_TEMP); 4522 return (0); 4523 } 4524 iface->data = malloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK); 4525 iface->num = j; 4526 i = j = 0; 4527 while (i < len) 4528 if (isspace(p[i]) || p[i] == '\0') 4529 i++; 4530 else { 4531 iface->data[j] = p + i; 4532 i += strlen(p + i) + 1; 4533 j++; 4534 } 4535 4536 return (j); 4537 } 4538 4539 static void 4540 acpi_free_interfaces(struct acpi_interface *iface) 4541 { 4542 4543 free(iface->data[0], M_TEMP); 4544 free(iface->data, M_TEMP); 4545 } 4546 4547 static void 4548 acpi_reset_interfaces(device_t dev) 4549 { 4550 struct acpi_interface list; 4551 ACPI_STATUS status; 4552 int i; 4553 4554 if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) { 4555 for (i = 0; i < list.num; i++) { 4556 status = AcpiInstallInterface(list.data[i]); 4557 if (ACPI_FAILURE(status)) 4558 device_printf(dev, 4559 "failed to install _OSI(\"%s\"): %s\n", 4560 list.data[i], AcpiFormatException(status)); 4561 else if (bootverbose) 4562 device_printf(dev, "installed _OSI(\"%s\")\n", 4563 list.data[i]); 4564 } 4565 acpi_free_interfaces(&list); 4566 } 4567 if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) { 4568 for (i = 0; i < list.num; i++) { 4569 status = AcpiRemoveInterface(list.data[i]); 4570 if (ACPI_FAILURE(status)) 4571 device_printf(dev, 4572 "failed to remove _OSI(\"%s\"): %s\n", 4573 list.data[i], AcpiFormatException(status)); 4574 else if (bootverbose) 4575 device_printf(dev, "removed _OSI(\"%s\")\n", 4576 list.data[i]); 4577 } 4578 acpi_free_interfaces(&list); 4579 } 4580 } 4581 4582 static int 4583 acpi_pm_func(u_long cmd, void *arg, ...) 4584 { 4585 int state, acpi_state; 4586 int error; 4587 struct acpi_softc *sc; 4588 va_list ap; 4589 4590 error = 0; 4591 switch (cmd) { 4592 case POWER_CMD_SUSPEND: 4593 sc = (struct acpi_softc *)arg; 4594 if (sc == NULL) { 4595 error = EINVAL; 4596 goto out; 4597 } 4598 4599 va_start(ap, arg); 4600 state = va_arg(ap, int); 4601 va_end(ap); 4602 4603 switch (state) { 4604 case POWER_SLEEP_STATE_STANDBY: 4605 acpi_state = sc->acpi_standby_sx; 4606 break; 4607 case POWER_SLEEP_STATE_SUSPEND: 4608 acpi_state = sc->acpi_suspend_sx; 4609 break; 4610 case POWER_SLEEP_STATE_HIBERNATE: 4611 acpi_state = ACPI_STATE_S4; 4612 break; 4613 default: 4614 error = EINVAL; 4615 goto out; 4616 } 4617 4618 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state))) 4619 error = ENXIO; 4620 break; 4621 default: 4622 error = EINVAL; 4623 goto out; 4624 } 4625 4626 out: 4627 return (error); 4628 } 4629 4630 static void 4631 acpi_pm_register(void *arg) 4632 { 4633 if (!cold || resource_disabled("acpi", 0)) 4634 return; 4635 4636 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL); 4637 } 4638 4639 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, NULL); 4640