1 /*- 2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org> 3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org> 4 * Copyright (c) 2000, 2001 Michael Smith 5 * Copyright (c) 2000 BSDi 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 #include "opt_acpi.h" 32 33 #include <sys/param.h> 34 #include <sys/eventhandler.h> 35 #include <sys/kernel.h> 36 #include <sys/proc.h> 37 #include <sys/fcntl.h> 38 #include <sys/malloc.h> 39 #include <sys/module.h> 40 #include <sys/bus.h> 41 #include <sys/conf.h> 42 #include <sys/ioccom.h> 43 #include <sys/reboot.h> 44 #include <sys/sysctl.h> 45 #include <sys/ctype.h> 46 #include <sys/linker.h> 47 #include <sys/mount.h> 48 #include <sys/power.h> 49 #include <sys/sbuf.h> 50 #include <sys/sched.h> 51 #include <sys/smp.h> 52 #include <sys/timetc.h> 53 #include <sys/uuid.h> 54 55 #if defined(__i386__) || defined(__amd64__) 56 #include <machine/clock.h> 57 #include <machine/pci_cfgreg.h> 58 #endif 59 #include <machine/resource.h> 60 #include <machine/bus.h> 61 #include <sys/rman.h> 62 #include <isa/isavar.h> 63 #include <isa/pnpvar.h> 64 65 #include <contrib/dev/acpica/include/acpi.h> 66 #include <contrib/dev/acpica/include/accommon.h> 67 #include <contrib/dev/acpica/include/acnamesp.h> 68 69 #include <dev/acpica/acpivar.h> 70 #include <dev/acpica/acpiio.h> 71 72 #include <dev/pci/pcivar.h> 73 74 #include <vm/vm_param.h> 75 76 static MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices"); 77 78 /* Hooks for the ACPI CA debugging infrastructure */ 79 #define _COMPONENT ACPI_BUS 80 ACPI_MODULE_NAME("ACPI") 81 82 static d_open_t acpiopen; 83 static d_close_t acpiclose; 84 static d_ioctl_t acpiioctl; 85 86 static struct cdevsw acpi_cdevsw = { 87 .d_version = D_VERSION, 88 .d_open = acpiopen, 89 .d_close = acpiclose, 90 .d_ioctl = acpiioctl, 91 .d_name = "acpi", 92 }; 93 94 struct acpi_interface { 95 ACPI_STRING *data; 96 int num; 97 }; 98 99 static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL }; 100 static char *pcilink_ids[] = { "PNP0C0F", NULL }; 101 102 /* Global mutex for locking access to the ACPI subsystem. */ 103 struct mtx acpi_mutex; 104 struct callout acpi_sleep_timer; 105 106 /* Bitmap of device quirks. */ 107 int acpi_quirks; 108 109 /* Supported sleep states. */ 110 static BOOLEAN acpi_sleep_states[ACPI_S_STATE_COUNT]; 111 112 static void acpi_lookup(void *arg, const char *name, device_t *dev); 113 static int acpi_modevent(struct module *mod, int event, void *junk); 114 static int acpi_probe(device_t dev); 115 static int acpi_attach(device_t dev); 116 static int acpi_suspend(device_t dev); 117 static int acpi_resume(device_t dev); 118 static int acpi_shutdown(device_t dev); 119 static device_t acpi_add_child(device_t bus, u_int order, const char *name, 120 int unit); 121 static int acpi_print_child(device_t bus, device_t child); 122 static void acpi_probe_nomatch(device_t bus, device_t child); 123 static void acpi_driver_added(device_t dev, driver_t *driver); 124 static void acpi_child_deleted(device_t dev, device_t child); 125 static int acpi_read_ivar(device_t dev, device_t child, int index, 126 uintptr_t *result); 127 static int acpi_write_ivar(device_t dev, device_t child, int index, 128 uintptr_t value); 129 static struct resource_list *acpi_get_rlist(device_t dev, device_t child); 130 static void acpi_reserve_resources(device_t dev); 131 static int acpi_sysres_alloc(device_t dev); 132 static int acpi_set_resource(device_t dev, device_t child, int type, 133 int rid, rman_res_t start, rman_res_t count); 134 static struct resource *acpi_alloc_resource(device_t bus, device_t child, 135 int type, int *rid, rman_res_t start, rman_res_t end, 136 rman_res_t count, u_int flags); 137 static int acpi_adjust_resource(device_t bus, device_t child, int type, 138 struct resource *r, rman_res_t start, rman_res_t end); 139 static int acpi_release_resource(device_t bus, device_t child, int type, 140 int rid, struct resource *r); 141 static void acpi_delete_resource(device_t bus, device_t child, int type, 142 int rid); 143 static uint32_t acpi_isa_get_logicalid(device_t dev); 144 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count); 145 static ssize_t acpi_bus_get_prop(device_t bus, device_t child, const char *propname, 146 void *propvalue, size_t size, device_property_type_t type); 147 static int acpi_device_id_probe(device_t bus, device_t dev, char **ids, char **match); 148 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev, 149 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters, 150 ACPI_BUFFER *ret); 151 static ACPI_STATUS acpi_device_get_prop(device_t bus, device_t dev, 152 ACPI_STRING propname, const ACPI_OBJECT **value); 153 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, 154 void *context, void **retval); 155 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev, 156 int max_depth, acpi_scan_cb_t user_fn, void *arg); 157 static ACPI_STATUS acpi_find_dsd(struct acpi_device *ad); 158 static int acpi_isa_pnp_probe(device_t bus, device_t child, 159 struct isa_pnp_id *ids); 160 static void acpi_platform_osc(device_t dev); 161 static void acpi_probe_children(device_t bus); 162 static void acpi_probe_order(ACPI_HANDLE handle, int *order); 163 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level, 164 void *context, void **status); 165 static void acpi_sleep_enable(void *arg); 166 static ACPI_STATUS acpi_sleep_disable(struct acpi_softc *sc); 167 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state); 168 static void acpi_shutdown_final(void *arg, int howto); 169 static void acpi_enable_fixed_events(struct acpi_softc *sc); 170 static void acpi_resync_clock(struct acpi_softc *sc); 171 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate); 172 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate); 173 static int acpi_wake_prep_walk(int sstate); 174 static int acpi_wake_sysctl_walk(device_t dev); 175 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS); 176 static void acpi_system_eventhandler_sleep(void *arg, int state); 177 static void acpi_system_eventhandler_wakeup(void *arg, int state); 178 static int acpi_sname2sstate(const char *sname); 179 static const char *acpi_sstate2sname(int sstate); 180 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); 181 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); 182 static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS); 183 static int acpi_pm_func(u_long cmd, void *arg, ...); 184 static int acpi_child_location_method(device_t acdev, device_t child, 185 struct sbuf *sb); 186 static int acpi_child_pnpinfo_method(device_t acdev, device_t child, 187 struct sbuf *sb); 188 static int acpi_get_device_path(device_t bus, device_t child, 189 const char *locator, struct sbuf *sb); 190 static void acpi_enable_pcie(void); 191 static void acpi_hint_device_unit(device_t acdev, device_t child, 192 const char *name, int *unitp); 193 static void acpi_reset_interfaces(device_t dev); 194 195 static device_method_t acpi_methods[] = { 196 /* Device interface */ 197 DEVMETHOD(device_probe, acpi_probe), 198 DEVMETHOD(device_attach, acpi_attach), 199 DEVMETHOD(device_shutdown, acpi_shutdown), 200 DEVMETHOD(device_detach, bus_generic_detach), 201 DEVMETHOD(device_suspend, acpi_suspend), 202 DEVMETHOD(device_resume, acpi_resume), 203 204 /* Bus interface */ 205 DEVMETHOD(bus_add_child, acpi_add_child), 206 DEVMETHOD(bus_print_child, acpi_print_child), 207 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch), 208 DEVMETHOD(bus_driver_added, acpi_driver_added), 209 DEVMETHOD(bus_child_deleted, acpi_child_deleted), 210 DEVMETHOD(bus_read_ivar, acpi_read_ivar), 211 DEVMETHOD(bus_write_ivar, acpi_write_ivar), 212 DEVMETHOD(bus_get_resource_list, acpi_get_rlist), 213 DEVMETHOD(bus_set_resource, acpi_set_resource), 214 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 215 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource), 216 DEVMETHOD(bus_adjust_resource, acpi_adjust_resource), 217 DEVMETHOD(bus_release_resource, acpi_release_resource), 218 DEVMETHOD(bus_delete_resource, acpi_delete_resource), 219 DEVMETHOD(bus_child_pnpinfo, acpi_child_pnpinfo_method), 220 DEVMETHOD(bus_child_location, acpi_child_location_method), 221 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 222 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 223 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 224 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 225 DEVMETHOD(bus_hint_device_unit, acpi_hint_device_unit), 226 DEVMETHOD(bus_get_cpus, acpi_get_cpus), 227 DEVMETHOD(bus_get_domain, acpi_get_domain), 228 DEVMETHOD(bus_get_property, acpi_bus_get_prop), 229 DEVMETHOD(bus_get_device_path, acpi_get_device_path), 230 231 /* ACPI bus */ 232 DEVMETHOD(acpi_id_probe, acpi_device_id_probe), 233 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj), 234 DEVMETHOD(acpi_get_property, acpi_device_get_prop), 235 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep), 236 DEVMETHOD(acpi_scan_children, acpi_device_scan_children), 237 238 /* ISA emulation */ 239 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe), 240 241 DEVMETHOD_END 242 }; 243 244 static driver_t acpi_driver = { 245 "acpi", 246 acpi_methods, 247 sizeof(struct acpi_softc), 248 }; 249 250 EARLY_DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_modevent, 0, 251 BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE); 252 MODULE_VERSION(acpi, 1); 253 254 ACPI_SERIAL_DECL(acpi, "ACPI root bus"); 255 256 /* Local pools for managing system resources for ACPI child devices. */ 257 static struct rman acpi_rman_io, acpi_rman_mem; 258 259 #define ACPI_MINIMUM_AWAKETIME 5 260 261 /* Holds the description of the acpi0 device. */ 262 static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2]; 263 264 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 265 "ACPI debugging"); 266 static char acpi_ca_version[12]; 267 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD, 268 acpi_ca_version, 0, "Version of Intel ACPI-CA"); 269 270 /* 271 * Allow overriding _OSI methods. 272 */ 273 static char acpi_install_interface[256]; 274 TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface, 275 sizeof(acpi_install_interface)); 276 static char acpi_remove_interface[256]; 277 TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface, 278 sizeof(acpi_remove_interface)); 279 280 /* Allow users to dump Debug objects without ACPI debugger. */ 281 static int acpi_debug_objects; 282 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects); 283 SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects, 284 CTLFLAG_RW | CTLTYPE_INT | CTLFLAG_MPSAFE, NULL, 0, 285 acpi_debug_objects_sysctl, "I", 286 "Enable Debug objects"); 287 288 /* Allow the interpreter to ignore common mistakes in BIOS. */ 289 static int acpi_interpreter_slack = 1; 290 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack); 291 SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RDTUN, 292 &acpi_interpreter_slack, 1, "Turn on interpreter slack mode."); 293 294 /* Ignore register widths set by FADT and use default widths instead. */ 295 static int acpi_ignore_reg_width = 1; 296 TUNABLE_INT("debug.acpi.default_register_width", &acpi_ignore_reg_width); 297 SYSCTL_INT(_debug_acpi, OID_AUTO, default_register_width, CTLFLAG_RDTUN, 298 &acpi_ignore_reg_width, 1, "Ignore register widths set by FADT"); 299 300 /* Allow users to override quirks. */ 301 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks); 302 303 int acpi_susp_bounce; 304 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW, 305 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices."); 306 307 /* 308 * ACPI standard UUID for Device Specific Data Package 309 * "Device Properties UUID for _DSD" Rev. 2.0 310 */ 311 static const struct uuid acpi_dsd_uuid = { 312 0xdaffd814, 0x6eba, 0x4d8c, 0x8a, 0x91, 313 { 0xbc, 0x9b, 0xbf, 0x4a, 0xa3, 0x01 } 314 }; 315 316 /* 317 * ACPI can only be loaded as a module by the loader; activating it after 318 * system bootstrap time is not useful, and can be fatal to the system. 319 * It also cannot be unloaded, since the entire system bus hierarchy hangs 320 * off it. 321 */ 322 static int 323 acpi_modevent(struct module *mod, int event, void *junk) 324 { 325 switch (event) { 326 case MOD_LOAD: 327 if (!cold) { 328 printf("The ACPI driver cannot be loaded after boot.\n"); 329 return (EPERM); 330 } 331 break; 332 case MOD_UNLOAD: 333 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI) 334 return (EBUSY); 335 break; 336 default: 337 break; 338 } 339 return (0); 340 } 341 342 /* 343 * Perform early initialization. 344 */ 345 ACPI_STATUS 346 acpi_Startup(void) 347 { 348 static int started = 0; 349 ACPI_STATUS status; 350 int val; 351 352 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 353 354 /* Only run the startup code once. The MADT driver also calls this. */ 355 if (started) 356 return_VALUE (AE_OK); 357 started = 1; 358 359 /* 360 * Initialize the ACPICA subsystem. 361 */ 362 if (ACPI_FAILURE(status = AcpiInitializeSubsystem())) { 363 printf("ACPI: Could not initialize Subsystem: %s\n", 364 AcpiFormatException(status)); 365 return_VALUE (status); 366 } 367 368 /* 369 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing 370 * if more tables exist. 371 */ 372 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) { 373 printf("ACPI: Table initialisation failed: %s\n", 374 AcpiFormatException(status)); 375 return_VALUE (status); 376 } 377 378 /* Set up any quirks we have for this system. */ 379 if (acpi_quirks == ACPI_Q_OK) 380 acpi_table_quirks(&acpi_quirks); 381 382 /* If the user manually set the disabled hint to 0, force-enable ACPI. */ 383 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0) 384 acpi_quirks &= ~ACPI_Q_BROKEN; 385 if (acpi_quirks & ACPI_Q_BROKEN) { 386 printf("ACPI disabled by blacklist. Contact your BIOS vendor.\n"); 387 status = AE_SUPPORT; 388 } 389 390 return_VALUE (status); 391 } 392 393 /* 394 * Detect ACPI and perform early initialisation. 395 */ 396 int 397 acpi_identify(void) 398 { 399 ACPI_TABLE_RSDP *rsdp; 400 ACPI_TABLE_HEADER *rsdt; 401 ACPI_PHYSICAL_ADDRESS paddr; 402 struct sbuf sb; 403 404 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 405 406 if (!cold) 407 return (ENXIO); 408 409 /* Check that we haven't been disabled with a hint. */ 410 if (resource_disabled("acpi", 0)) 411 return (ENXIO); 412 413 /* Check for other PM systems. */ 414 if (power_pm_get_type() != POWER_PM_TYPE_NONE && 415 power_pm_get_type() != POWER_PM_TYPE_ACPI) { 416 printf("ACPI identify failed, other PM system enabled.\n"); 417 return (ENXIO); 418 } 419 420 /* Initialize root tables. */ 421 if (ACPI_FAILURE(acpi_Startup())) { 422 printf("ACPI: Try disabling either ACPI or apic support.\n"); 423 return (ENXIO); 424 } 425 426 if ((paddr = AcpiOsGetRootPointer()) == 0 || 427 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL) 428 return (ENXIO); 429 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0) 430 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress; 431 else 432 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress; 433 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 434 435 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL) 436 return (ENXIO); 437 sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN); 438 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE); 439 sbuf_trim(&sb); 440 sbuf_putc(&sb, ' '); 441 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE); 442 sbuf_trim(&sb); 443 sbuf_finish(&sb); 444 sbuf_delete(&sb); 445 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 446 447 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION); 448 449 return (0); 450 } 451 452 /* 453 * Fetch some descriptive data from ACPI to put in our attach message. 454 */ 455 static int 456 acpi_probe(device_t dev) 457 { 458 459 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 460 461 device_set_desc(dev, acpi_desc); 462 463 return_VALUE (BUS_PROBE_NOWILDCARD); 464 } 465 466 static int 467 acpi_attach(device_t dev) 468 { 469 struct acpi_softc *sc; 470 ACPI_STATUS status; 471 int error, state; 472 UINT32 flags; 473 UINT8 TypeA, TypeB; 474 char *env; 475 476 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 477 478 sc = device_get_softc(dev); 479 sc->acpi_dev = dev; 480 callout_init(&sc->susp_force_to, 1); 481 482 error = ENXIO; 483 484 /* Initialize resource manager. */ 485 acpi_rman_io.rm_type = RMAN_ARRAY; 486 acpi_rman_io.rm_start = 0; 487 acpi_rman_io.rm_end = 0xffff; 488 acpi_rman_io.rm_descr = "ACPI I/O ports"; 489 if (rman_init(&acpi_rman_io) != 0) 490 panic("acpi rman_init IO ports failed"); 491 acpi_rman_mem.rm_type = RMAN_ARRAY; 492 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses"; 493 if (rman_init(&acpi_rman_mem) != 0) 494 panic("acpi rman_init memory failed"); 495 496 /* Initialise the ACPI mutex */ 497 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF); 498 499 /* 500 * Set the globals from our tunables. This is needed because ACPI-CA 501 * uses UINT8 for some values and we have no tunable_byte. 502 */ 503 AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE; 504 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE; 505 AcpiGbl_UseDefaultRegisterWidths = acpi_ignore_reg_width ? TRUE : FALSE; 506 507 #ifndef ACPI_DEBUG 508 /* 509 * Disable all debugging layers and levels. 510 */ 511 AcpiDbgLayer = 0; 512 AcpiDbgLevel = 0; 513 #endif 514 515 /* Override OS interfaces if the user requested. */ 516 acpi_reset_interfaces(dev); 517 518 /* Load ACPI name space. */ 519 status = AcpiLoadTables(); 520 if (ACPI_FAILURE(status)) { 521 device_printf(dev, "Could not load Namespace: %s\n", 522 AcpiFormatException(status)); 523 goto out; 524 } 525 526 /* Handle MCFG table if present. */ 527 acpi_enable_pcie(); 528 529 /* 530 * Note that some systems (specifically, those with namespace evaluation 531 * issues that require the avoidance of parts of the namespace) must 532 * avoid running _INI and _STA on everything, as well as dodging the final 533 * object init pass. 534 * 535 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT). 536 * 537 * XXX We should arrange for the object init pass after we have attached 538 * all our child devices, but on many systems it works here. 539 */ 540 flags = 0; 541 if (testenv("debug.acpi.avoid")) 542 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; 543 544 /* Bring the hardware and basic handlers online. */ 545 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) { 546 device_printf(dev, "Could not enable ACPI: %s\n", 547 AcpiFormatException(status)); 548 goto out; 549 } 550 551 /* 552 * Call the ECDT probe function to provide EC functionality before 553 * the namespace has been evaluated. 554 * 555 * XXX This happens before the sysresource devices have been probed and 556 * attached so its resources come from nexus0. In practice, this isn't 557 * a problem but should be addressed eventually. 558 */ 559 acpi_ec_ecdt_probe(dev); 560 561 /* Bring device objects and regions online. */ 562 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) { 563 device_printf(dev, "Could not initialize ACPI objects: %s\n", 564 AcpiFormatException(status)); 565 goto out; 566 } 567 568 /* 569 * Setup our sysctl tree. 570 * 571 * XXX: This doesn't check to make sure that none of these fail. 572 */ 573 sysctl_ctx_init(&sc->acpi_sysctl_ctx); 574 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx, 575 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, device_get_name(dev), 576 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); 577 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 578 OID_AUTO, "supported_sleep_state", 579 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, 580 0, 0, acpi_supported_sleep_state_sysctl, "A", 581 "List supported ACPI sleep states."); 582 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 583 OID_AUTO, "power_button_state", 584 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, 585 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", 586 "Power button ACPI sleep state."); 587 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 588 OID_AUTO, "sleep_button_state", 589 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, 590 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", 591 "Sleep button ACPI sleep state."); 592 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 593 OID_AUTO, "lid_switch_state", 594 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, 595 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", 596 "Lid ACPI sleep state. Set to S3 if you want to suspend your laptop when close the Lid."); 597 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 598 OID_AUTO, "standby_state", 599 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, 600 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", ""); 601 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 602 OID_AUTO, "suspend_state", 603 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, 604 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", ""); 605 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 606 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0, 607 "sleep delay in seconds"); 608 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 609 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode"); 610 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 611 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode"); 612 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 613 OID_AUTO, "disable_on_reboot", CTLFLAG_RW, 614 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system"); 615 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 616 OID_AUTO, "handle_reboot", CTLFLAG_RW, 617 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot"); 618 619 /* 620 * Default to 1 second before sleeping to give some machines time to 621 * stabilize. 622 */ 623 sc->acpi_sleep_delay = 1; 624 if (bootverbose) 625 sc->acpi_verbose = 1; 626 if ((env = kern_getenv("hw.acpi.verbose")) != NULL) { 627 if (strcmp(env, "0") != 0) 628 sc->acpi_verbose = 1; 629 freeenv(env); 630 } 631 632 /* Only enable reboot by default if the FADT says it is available. */ 633 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) 634 sc->acpi_handle_reboot = 1; 635 636 #if !ACPI_REDUCED_HARDWARE 637 /* Only enable S4BIOS by default if the FACS says it is available. */ 638 if (AcpiGbl_FACS != NULL && AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT) 639 sc->acpi_s4bios = 1; 640 #endif 641 642 /* Probe all supported sleep states. */ 643 acpi_sleep_states[ACPI_STATE_S0] = TRUE; 644 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++) 645 if (ACPI_SUCCESS(AcpiEvaluateObject(ACPI_ROOT_OBJECT, 646 __DECONST(char *, AcpiGbl_SleepStateNames[state]), NULL, NULL)) && 647 ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) 648 acpi_sleep_states[state] = TRUE; 649 650 /* 651 * Dispatch the default sleep state to devices. The lid switch is set 652 * to UNKNOWN by default to avoid surprising users. 653 */ 654 sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ? 655 ACPI_STATE_S5 : ACPI_STATE_UNKNOWN; 656 sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN; 657 sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ? 658 ACPI_STATE_S1 : ACPI_STATE_UNKNOWN; 659 sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ? 660 ACPI_STATE_S3 : ACPI_STATE_UNKNOWN; 661 662 /* Pick the first valid sleep state for the sleep button default. */ 663 sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN; 664 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++) 665 if (acpi_sleep_states[state]) { 666 sc->acpi_sleep_button_sx = state; 667 break; 668 } 669 670 acpi_enable_fixed_events(sc); 671 672 /* 673 * Scan the namespace and attach/initialise children. 674 */ 675 676 /* Register our shutdown handler. */ 677 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc, 678 SHUTDOWN_PRI_LAST + 150); 679 680 /* 681 * Register our acpi event handlers. 682 * XXX should be configurable eg. via userland policy manager. 683 */ 684 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep, 685 sc, ACPI_EVENT_PRI_LAST); 686 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup, 687 sc, ACPI_EVENT_PRI_LAST); 688 689 /* Flag our initial states. */ 690 sc->acpi_enabled = TRUE; 691 sc->acpi_sstate = ACPI_STATE_S0; 692 sc->acpi_sleep_disabled = TRUE; 693 694 /* Create the control device */ 695 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0664, 696 "acpi"); 697 sc->acpi_dev_t->si_drv1 = sc; 698 699 if ((error = acpi_machdep_init(dev))) 700 goto out; 701 702 /* Register ACPI again to pass the correct argument of pm_func. */ 703 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc); 704 705 acpi_platform_osc(dev); 706 707 if (!acpi_disabled("bus")) { 708 EVENTHANDLER_REGISTER(dev_lookup, acpi_lookup, NULL, 1000); 709 acpi_probe_children(dev); 710 } 711 712 /* Update all GPEs and enable runtime GPEs. */ 713 status = AcpiUpdateAllGpes(); 714 if (ACPI_FAILURE(status)) 715 device_printf(dev, "Could not update all GPEs: %s\n", 716 AcpiFormatException(status)); 717 718 /* Allow sleep request after a while. */ 719 callout_init_mtx(&acpi_sleep_timer, &acpi_mutex, 0); 720 callout_reset(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME, 721 acpi_sleep_enable, sc); 722 723 error = 0; 724 725 out: 726 return_VALUE (error); 727 } 728 729 static void 730 acpi_set_power_children(device_t dev, int state) 731 { 732 device_t child; 733 device_t *devlist; 734 int dstate, i, numdevs; 735 736 if (device_get_children(dev, &devlist, &numdevs) != 0) 737 return; 738 739 /* 740 * Retrieve and set D-state for the sleep state if _SxD is present. 741 * Skip children who aren't attached since they are handled separately. 742 */ 743 for (i = 0; i < numdevs; i++) { 744 child = devlist[i]; 745 dstate = state; 746 if (device_is_attached(child) && 747 acpi_device_pwr_for_sleep(dev, child, &dstate) == 0) 748 acpi_set_powerstate(child, dstate); 749 } 750 free(devlist, M_TEMP); 751 } 752 753 static int 754 acpi_suspend(device_t dev) 755 { 756 int error; 757 758 bus_topo_assert(); 759 760 error = bus_generic_suspend(dev); 761 if (error == 0) 762 acpi_set_power_children(dev, ACPI_STATE_D3); 763 764 return (error); 765 } 766 767 static int 768 acpi_resume(device_t dev) 769 { 770 771 bus_topo_assert(); 772 773 acpi_set_power_children(dev, ACPI_STATE_D0); 774 775 return (bus_generic_resume(dev)); 776 } 777 778 static int 779 acpi_shutdown(device_t dev) 780 { 781 782 bus_topo_assert(); 783 784 /* Allow children to shutdown first. */ 785 bus_generic_shutdown(dev); 786 787 /* 788 * Enable any GPEs that are able to power-on the system (i.e., RTC). 789 * Also, disable any that are not valid for this state (most). 790 */ 791 acpi_wake_prep_walk(ACPI_STATE_S5); 792 793 return (0); 794 } 795 796 /* 797 * Handle a new device being added 798 */ 799 static device_t 800 acpi_add_child(device_t bus, u_int order, const char *name, int unit) 801 { 802 struct acpi_device *ad; 803 device_t child; 804 805 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL) 806 return (NULL); 807 808 resource_list_init(&ad->ad_rl); 809 810 child = device_add_child_ordered(bus, order, name, unit); 811 if (child != NULL) 812 device_set_ivars(child, ad); 813 else 814 free(ad, M_ACPIDEV); 815 return (child); 816 } 817 818 static int 819 acpi_print_child(device_t bus, device_t child) 820 { 821 struct acpi_device *adev = device_get_ivars(child); 822 struct resource_list *rl = &adev->ad_rl; 823 int retval = 0; 824 825 retval += bus_print_child_header(bus, child); 826 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#jx"); 827 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#jx"); 828 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd"); 829 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%jd"); 830 if (device_get_flags(child)) 831 retval += printf(" flags %#x", device_get_flags(child)); 832 retval += bus_print_child_domain(bus, child); 833 retval += bus_print_child_footer(bus, child); 834 835 return (retval); 836 } 837 838 /* 839 * If this device is an ACPI child but no one claimed it, attempt 840 * to power it off. We'll power it back up when a driver is added. 841 * 842 * XXX Disabled for now since many necessary devices (like fdc and 843 * ATA) don't claim the devices we created for them but still expect 844 * them to be powered up. 845 */ 846 static void 847 acpi_probe_nomatch(device_t bus, device_t child) 848 { 849 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER 850 acpi_set_powerstate(child, ACPI_STATE_D3); 851 #endif 852 } 853 854 /* 855 * If a new driver has a chance to probe a child, first power it up. 856 * 857 * XXX Disabled for now (see acpi_probe_nomatch for details). 858 */ 859 static void 860 acpi_driver_added(device_t dev, driver_t *driver) 861 { 862 device_t child, *devlist; 863 int i, numdevs; 864 865 DEVICE_IDENTIFY(driver, dev); 866 if (device_get_children(dev, &devlist, &numdevs)) 867 return; 868 for (i = 0; i < numdevs; i++) { 869 child = devlist[i]; 870 if (device_get_state(child) == DS_NOTPRESENT) { 871 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER 872 acpi_set_powerstate(child, ACPI_STATE_D0); 873 if (device_probe_and_attach(child) != 0) 874 acpi_set_powerstate(child, ACPI_STATE_D3); 875 #else 876 device_probe_and_attach(child); 877 #endif 878 } 879 } 880 free(devlist, M_TEMP); 881 } 882 883 /* Location hint for devctl(8) */ 884 static int 885 acpi_child_location_method(device_t cbdev, device_t child, struct sbuf *sb) 886 { 887 struct acpi_device *dinfo = device_get_ivars(child); 888 int pxm; 889 890 if (dinfo->ad_handle) { 891 sbuf_printf(sb, "handle=%s", acpi_name(dinfo->ad_handle)); 892 if (ACPI_SUCCESS(acpi_GetInteger(dinfo->ad_handle, "_PXM", &pxm))) { 893 sbuf_printf(sb, " _PXM=%d", pxm); 894 } 895 } 896 return (0); 897 } 898 899 /* PnP information for devctl(8) */ 900 int 901 acpi_pnpinfo(ACPI_HANDLE handle, struct sbuf *sb) 902 { 903 ACPI_DEVICE_INFO *adinfo; 904 905 if (ACPI_FAILURE(AcpiGetObjectInfo(handle, &adinfo))) { 906 sbuf_printf(sb, "unknown"); 907 return (0); 908 } 909 910 sbuf_printf(sb, "_HID=%s _UID=%lu _CID=%s", 911 (adinfo->Valid & ACPI_VALID_HID) ? 912 adinfo->HardwareId.String : "none", 913 (adinfo->Valid & ACPI_VALID_UID) ? 914 strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL, 915 ((adinfo->Valid & ACPI_VALID_CID) && 916 adinfo->CompatibleIdList.Count > 0) ? 917 adinfo->CompatibleIdList.Ids[0].String : "none"); 918 AcpiOsFree(adinfo); 919 920 return (0); 921 } 922 923 static int 924 acpi_child_pnpinfo_method(device_t cbdev, device_t child, struct sbuf *sb) 925 { 926 struct acpi_device *dinfo = device_get_ivars(child); 927 928 return (acpi_pnpinfo(dinfo->ad_handle, sb)); 929 } 930 931 /* 932 * Note: the check for ACPI locator may be redundant. However, this routine is 933 * suitable for both busses whose only locator is ACPI and as a building block 934 * for busses that have multiple locators to cope with. 935 */ 936 int 937 acpi_get_acpi_device_path(device_t bus, device_t child, const char *locator, struct sbuf *sb) 938 { 939 if (strcmp(locator, BUS_LOCATOR_ACPI) == 0) { 940 ACPI_HANDLE *handle = acpi_get_handle(child); 941 942 if (handle != NULL) 943 sbuf_printf(sb, "%s", acpi_name(handle)); 944 return (0); 945 } 946 947 return (bus_generic_get_device_path(bus, child, locator, sb)); 948 } 949 950 static int 951 acpi_get_device_path(device_t bus, device_t child, const char *locator, struct sbuf *sb) 952 { 953 struct acpi_device *dinfo = device_get_ivars(child); 954 955 if (strcmp(locator, BUS_LOCATOR_ACPI) == 0) 956 return (acpi_get_acpi_device_path(bus, child, locator, sb)); 957 958 if (strcmp(locator, BUS_LOCATOR_UEFI) == 0) { 959 ACPI_DEVICE_INFO *adinfo; 960 if (!ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo)) && 961 dinfo->ad_handle != 0 && (adinfo->Valid & ACPI_VALID_HID)) { 962 const char *hid = adinfo->HardwareId.String; 963 u_long uid = (adinfo->Valid & ACPI_VALID_UID) ? 964 strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL; 965 u_long hidval; 966 967 /* 968 * In UEFI Stanard Version 2.6, Section 9.6.1.6 Text 969 * Device Node Reference, there's an insanely long table 970 * 98. This implements the relevant bits from that 971 * table. Newer versions appear to have not required 972 * anything new. The EDK2 firmware presents both PciRoot 973 * and PcieRoot as PciRoot. Follow the EDK2 standard. 974 */ 975 if (strncmp("PNP", hid, 3) != 0) 976 goto nomatch; 977 hidval = strtoul(hid + 3, NULL, 16); 978 switch (hidval) { 979 case 0x0301: 980 sbuf_printf(sb, "Keyboard(0x%lx)", uid); 981 break; 982 case 0x0401: 983 sbuf_printf(sb, "ParallelPort(0x%lx)", uid); 984 break; 985 case 0x0501: 986 sbuf_printf(sb, "Serial(0x%lx)", uid); 987 break; 988 case 0x0604: 989 sbuf_printf(sb, "Floppy(0x%lx)", uid); 990 break; 991 case 0x0a03: 992 case 0x0a08: 993 sbuf_printf(sb, "PciRoot(0x%lx)", uid); 994 break; 995 default: /* Everything else gets a generic encode */ 996 nomatch: 997 sbuf_printf(sb, "Acpi(%s,0x%lx)", hid, uid); 998 break; 999 } 1000 } 1001 /* Not handled: AcpiAdr... unsure how to know it's one */ 1002 } 1003 1004 /* For the rest, punt to the default handler */ 1005 return (bus_generic_get_device_path(bus, child, locator, sb)); 1006 } 1007 1008 /* 1009 * Handle device deletion. 1010 */ 1011 static void 1012 acpi_child_deleted(device_t dev, device_t child) 1013 { 1014 struct acpi_device *dinfo = device_get_ivars(child); 1015 1016 if (acpi_get_device(dinfo->ad_handle) == child) 1017 AcpiDetachData(dinfo->ad_handle, acpi_fake_objhandler); 1018 } 1019 1020 /* 1021 * Handle per-device ivars 1022 */ 1023 static int 1024 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) 1025 { 1026 struct acpi_device *ad; 1027 1028 if ((ad = device_get_ivars(child)) == NULL) { 1029 device_printf(child, "device has no ivars\n"); 1030 return (ENOENT); 1031 } 1032 1033 /* ACPI and ISA compatibility ivars */ 1034 switch(index) { 1035 case ACPI_IVAR_HANDLE: 1036 *(ACPI_HANDLE *)result = ad->ad_handle; 1037 break; 1038 case ACPI_IVAR_PRIVATE: 1039 *(void **)result = ad->ad_private; 1040 break; 1041 case ACPI_IVAR_FLAGS: 1042 *(int *)result = ad->ad_flags; 1043 break; 1044 case ISA_IVAR_VENDORID: 1045 case ISA_IVAR_SERIAL: 1046 case ISA_IVAR_COMPATID: 1047 *(int *)result = -1; 1048 break; 1049 case ISA_IVAR_LOGICALID: 1050 *(int *)result = acpi_isa_get_logicalid(child); 1051 break; 1052 case PCI_IVAR_CLASS: 1053 *(uint8_t*)result = (ad->ad_cls_class >> 16) & 0xff; 1054 break; 1055 case PCI_IVAR_SUBCLASS: 1056 *(uint8_t*)result = (ad->ad_cls_class >> 8) & 0xff; 1057 break; 1058 case PCI_IVAR_PROGIF: 1059 *(uint8_t*)result = (ad->ad_cls_class >> 0) & 0xff; 1060 break; 1061 default: 1062 return (ENOENT); 1063 } 1064 1065 return (0); 1066 } 1067 1068 static int 1069 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value) 1070 { 1071 struct acpi_device *ad; 1072 1073 if ((ad = device_get_ivars(child)) == NULL) { 1074 device_printf(child, "device has no ivars\n"); 1075 return (ENOENT); 1076 } 1077 1078 switch(index) { 1079 case ACPI_IVAR_HANDLE: 1080 ad->ad_handle = (ACPI_HANDLE)value; 1081 break; 1082 case ACPI_IVAR_PRIVATE: 1083 ad->ad_private = (void *)value; 1084 break; 1085 case ACPI_IVAR_FLAGS: 1086 ad->ad_flags = (int)value; 1087 break; 1088 default: 1089 panic("bad ivar write request (%d)", index); 1090 return (ENOENT); 1091 } 1092 1093 return (0); 1094 } 1095 1096 /* 1097 * Handle child resource allocation/removal 1098 */ 1099 static struct resource_list * 1100 acpi_get_rlist(device_t dev, device_t child) 1101 { 1102 struct acpi_device *ad; 1103 1104 ad = device_get_ivars(child); 1105 return (&ad->ad_rl); 1106 } 1107 1108 static int 1109 acpi_match_resource_hint(device_t dev, int type, long value) 1110 { 1111 struct acpi_device *ad = device_get_ivars(dev); 1112 struct resource_list *rl = &ad->ad_rl; 1113 struct resource_list_entry *rle; 1114 1115 STAILQ_FOREACH(rle, rl, link) { 1116 if (rle->type != type) 1117 continue; 1118 if (rle->start <= value && rle->end >= value) 1119 return (1); 1120 } 1121 return (0); 1122 } 1123 1124 /* 1125 * Does this device match because the resources match? 1126 */ 1127 static bool 1128 acpi_hint_device_matches_resources(device_t child, const char *name, 1129 int unit) 1130 { 1131 long value; 1132 bool matches; 1133 1134 /* 1135 * Check for matching resources. We must have at least one match. 1136 * Since I/O and memory resources cannot be shared, if we get a 1137 * match on either of those, ignore any mismatches in IRQs or DRQs. 1138 * 1139 * XXX: We may want to revisit this to be more lenient and wire 1140 * as long as it gets one match. 1141 */ 1142 matches = false; 1143 if (resource_long_value(name, unit, "port", &value) == 0) { 1144 /* 1145 * Floppy drive controllers are notorious for having a 1146 * wide variety of resources not all of which include the 1147 * first port that is specified by the hint (typically 1148 * 0x3f0) (see the comment above fdc_isa_alloc_resources() 1149 * in fdc_isa.c). However, they do all seem to include 1150 * port + 2 (e.g. 0x3f2) so for a floppy device, look for 1151 * 'value + 2' in the port resources instead of the hint 1152 * value. 1153 */ 1154 if (strcmp(name, "fdc") == 0) 1155 value += 2; 1156 if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value)) 1157 matches = true; 1158 else 1159 return false; 1160 } 1161 if (resource_long_value(name, unit, "maddr", &value) == 0) { 1162 if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value)) 1163 matches = true; 1164 else 1165 return false; 1166 } 1167 1168 /* 1169 * If either the I/O address and/or the memory address matched, then 1170 * assumed this devices matches and that any mismatch in other resources 1171 * will be resolved by siltently ignoring those other resources. Otherwise 1172 * all further resources must match. 1173 */ 1174 if (matches) { 1175 return (true); 1176 } 1177 if (resource_long_value(name, unit, "irq", &value) == 0) { 1178 if (acpi_match_resource_hint(child, SYS_RES_IRQ, value)) 1179 matches = true; 1180 else 1181 return false; 1182 } 1183 if (resource_long_value(name, unit, "drq", &value) == 0) { 1184 if (acpi_match_resource_hint(child, SYS_RES_DRQ, value)) 1185 matches = true; 1186 else 1187 return false; 1188 } 1189 return matches; 1190 } 1191 1192 1193 /* 1194 * Wire device unit numbers based on resource matches in hints. 1195 */ 1196 static void 1197 acpi_hint_device_unit(device_t acdev, device_t child, const char *name, 1198 int *unitp) 1199 { 1200 device_location_cache_t *cache; 1201 const char *s; 1202 int line, unit; 1203 bool matches; 1204 1205 /* 1206 * Iterate over all the hints for the devices with the specified 1207 * name to see if one's resources are a subset of this device. 1208 */ 1209 line = 0; 1210 cache = dev_wired_cache_init(); 1211 while (resource_find_dev(&line, name, &unit, "at", NULL) == 0) { 1212 /* Must have an "at" for acpi or isa. */ 1213 resource_string_value(name, unit, "at", &s); 1214 matches = false; 1215 if (strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 || 1216 strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0) 1217 matches = acpi_hint_device_matches_resources(child, name, unit); 1218 else 1219 matches = dev_wired_cache_match(cache, child, s); 1220 1221 if (matches) { 1222 /* We have a winner! */ 1223 *unitp = unit; 1224 break; 1225 } 1226 } 1227 dev_wired_cache_fini(cache); 1228 } 1229 1230 /* 1231 * Fetch the NUMA domain for a device by mapping the value returned by 1232 * _PXM to a NUMA domain. If the device does not have a _PXM method, 1233 * -2 is returned. If any other error occurs, -1 is returned. 1234 */ 1235 static int 1236 acpi_parse_pxm(device_t dev) 1237 { 1238 #ifdef NUMA 1239 #if defined(__i386__) || defined(__amd64__) || defined(__aarch64__) 1240 ACPI_HANDLE handle; 1241 ACPI_STATUS status; 1242 int pxm; 1243 1244 handle = acpi_get_handle(dev); 1245 if (handle == NULL) 1246 return (-2); 1247 status = acpi_GetInteger(handle, "_PXM", &pxm); 1248 if (ACPI_SUCCESS(status)) 1249 return (acpi_map_pxm_to_vm_domainid(pxm)); 1250 if (status == AE_NOT_FOUND) 1251 return (-2); 1252 #endif 1253 #endif 1254 return (-1); 1255 } 1256 1257 int 1258 acpi_get_cpus(device_t dev, device_t child, enum cpu_sets op, size_t setsize, 1259 cpuset_t *cpuset) 1260 { 1261 int d, error; 1262 1263 d = acpi_parse_pxm(child); 1264 if (d < 0) 1265 return (bus_generic_get_cpus(dev, child, op, setsize, cpuset)); 1266 1267 switch (op) { 1268 case LOCAL_CPUS: 1269 if (setsize != sizeof(cpuset_t)) 1270 return (EINVAL); 1271 *cpuset = cpuset_domain[d]; 1272 return (0); 1273 case INTR_CPUS: 1274 error = bus_generic_get_cpus(dev, child, op, setsize, cpuset); 1275 if (error != 0) 1276 return (error); 1277 if (setsize != sizeof(cpuset_t)) 1278 return (EINVAL); 1279 CPU_AND(cpuset, cpuset, &cpuset_domain[d]); 1280 return (0); 1281 default: 1282 return (bus_generic_get_cpus(dev, child, op, setsize, cpuset)); 1283 } 1284 } 1285 1286 /* 1287 * Fetch the NUMA domain for the given device 'dev'. 1288 * 1289 * If a device has a _PXM method, map that to a NUMA domain. 1290 * Otherwise, pass the request up to the parent. 1291 * If there's no matching domain or the domain cannot be 1292 * determined, return ENOENT. 1293 */ 1294 int 1295 acpi_get_domain(device_t dev, device_t child, int *domain) 1296 { 1297 int d; 1298 1299 d = acpi_parse_pxm(child); 1300 if (d >= 0) { 1301 *domain = d; 1302 return (0); 1303 } 1304 if (d == -1) 1305 return (ENOENT); 1306 1307 /* No _PXM node; go up a level */ 1308 return (bus_generic_get_domain(dev, child, domain)); 1309 } 1310 1311 /* 1312 * Pre-allocate/manage all memory and IO resources. Since rman can't handle 1313 * duplicates, we merge any in the sysresource attach routine. 1314 */ 1315 static int 1316 acpi_sysres_alloc(device_t dev) 1317 { 1318 struct resource *res; 1319 struct resource_list *rl; 1320 struct resource_list_entry *rle; 1321 struct rman *rm; 1322 device_t *children; 1323 int child_count, i; 1324 1325 /* 1326 * Probe/attach any sysresource devices. This would be unnecessary if we 1327 * had multi-pass probe/attach. 1328 */ 1329 if (device_get_children(dev, &children, &child_count) != 0) 1330 return (ENXIO); 1331 for (i = 0; i < child_count; i++) { 1332 if (ACPI_ID_PROBE(dev, children[i], sysres_ids, NULL) <= 0) 1333 device_probe_and_attach(children[i]); 1334 } 1335 free(children, M_TEMP); 1336 1337 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev); 1338 STAILQ_FOREACH(rle, rl, link) { 1339 if (rle->res != NULL) { 1340 device_printf(dev, "duplicate resource for %jx\n", rle->start); 1341 continue; 1342 } 1343 1344 /* Only memory and IO resources are valid here. */ 1345 switch (rle->type) { 1346 case SYS_RES_IOPORT: 1347 rm = &acpi_rman_io; 1348 break; 1349 case SYS_RES_MEMORY: 1350 rm = &acpi_rman_mem; 1351 break; 1352 default: 1353 continue; 1354 } 1355 1356 /* Pre-allocate resource and add to our rman pool. */ 1357 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type, 1358 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0); 1359 if (res != NULL) { 1360 rman_manage_region(rm, rman_get_start(res), rman_get_end(res)); 1361 rle->res = res; 1362 } else if (bootverbose) 1363 device_printf(dev, "reservation of %jx, %jx (%d) failed\n", 1364 rle->start, rle->count, rle->type); 1365 } 1366 return (0); 1367 } 1368 1369 /* 1370 * Reserve declared resources for devices found during attach once system 1371 * resources have been allocated. 1372 */ 1373 static void 1374 acpi_reserve_resources(device_t dev) 1375 { 1376 struct resource_list_entry *rle; 1377 struct resource_list *rl; 1378 struct acpi_device *ad; 1379 device_t *children; 1380 int child_count, i; 1381 1382 if (device_get_children(dev, &children, &child_count) != 0) 1383 return; 1384 for (i = 0; i < child_count; i++) { 1385 ad = device_get_ivars(children[i]); 1386 rl = &ad->ad_rl; 1387 1388 /* Don't reserve system resources. */ 1389 if (ACPI_ID_PROBE(dev, children[i], sysres_ids, NULL) <= 0) 1390 continue; 1391 1392 STAILQ_FOREACH(rle, rl, link) { 1393 /* 1394 * Don't reserve IRQ resources. There are many sticky things 1395 * to get right otherwise (e.g. IRQs for psm, atkbd, and HPET 1396 * when using legacy routing). 1397 */ 1398 if (rle->type == SYS_RES_IRQ) 1399 continue; 1400 1401 /* 1402 * Don't reserve the resource if it is already allocated. 1403 * The acpi_ec(4) driver can allocate its resources early 1404 * if ECDT is present. 1405 */ 1406 if (rle->res != NULL) 1407 continue; 1408 1409 /* 1410 * Try to reserve the resource from our parent. If this 1411 * fails because the resource is a system resource, just 1412 * let it be. The resource range is already reserved so 1413 * that other devices will not use it. If the driver 1414 * needs to allocate the resource, then 1415 * acpi_alloc_resource() will sub-alloc from the system 1416 * resource. 1417 */ 1418 resource_list_reserve(rl, dev, children[i], rle->type, &rle->rid, 1419 rle->start, rle->end, rle->count, 0); 1420 } 1421 } 1422 free(children, M_TEMP); 1423 } 1424 1425 static int 1426 acpi_set_resource(device_t dev, device_t child, int type, int rid, 1427 rman_res_t start, rman_res_t count) 1428 { 1429 struct acpi_device *ad = device_get_ivars(child); 1430 struct resource_list *rl = &ad->ad_rl; 1431 ACPI_DEVICE_INFO *devinfo; 1432 rman_res_t end; 1433 int allow; 1434 1435 /* Ignore IRQ resources for PCI link devices. */ 1436 if (type == SYS_RES_IRQ && 1437 ACPI_ID_PROBE(dev, child, pcilink_ids, NULL) <= 0) 1438 return (0); 1439 1440 /* 1441 * Ignore most resources for PCI root bridges. Some BIOSes 1442 * incorrectly enumerate the memory ranges they decode as plain 1443 * memory resources instead of as ResourceProducer ranges. Other 1444 * BIOSes incorrectly list system resource entries for I/O ranges 1445 * under the PCI bridge. Do allow the one known-correct case on 1446 * x86 of a PCI bridge claiming the I/O ports used for PCI config 1447 * access. 1448 */ 1449 if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) { 1450 if (ACPI_SUCCESS(AcpiGetObjectInfo(ad->ad_handle, &devinfo))) { 1451 if ((devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0) { 1452 #if defined(__i386__) || defined(__amd64__) 1453 allow = (type == SYS_RES_IOPORT && start == CONF1_ADDR_PORT); 1454 #else 1455 allow = 0; 1456 #endif 1457 if (!allow) { 1458 AcpiOsFree(devinfo); 1459 return (0); 1460 } 1461 } 1462 AcpiOsFree(devinfo); 1463 } 1464 } 1465 1466 #ifdef INTRNG 1467 /* map with default for now */ 1468 if (type == SYS_RES_IRQ) 1469 start = (rman_res_t)acpi_map_intr(child, (u_int)start, 1470 acpi_get_handle(child)); 1471 #endif 1472 1473 /* If the resource is already allocated, fail. */ 1474 if (resource_list_busy(rl, type, rid)) 1475 return (EBUSY); 1476 1477 /* If the resource is already reserved, release it. */ 1478 if (resource_list_reserved(rl, type, rid)) 1479 resource_list_unreserve(rl, dev, child, type, rid); 1480 1481 /* Add the resource. */ 1482 end = (start + count - 1); 1483 resource_list_add(rl, type, rid, start, end, count); 1484 return (0); 1485 } 1486 1487 static struct resource * 1488 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, 1489 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 1490 { 1491 #ifndef INTRNG 1492 ACPI_RESOURCE ares; 1493 #endif 1494 struct acpi_device *ad; 1495 struct resource_list_entry *rle; 1496 struct resource_list *rl; 1497 struct resource *res; 1498 int isdefault = RMAN_IS_DEFAULT_RANGE(start, end); 1499 1500 /* 1501 * First attempt at allocating the resource. For direct children, 1502 * use resource_list_alloc() to handle reserved resources. For 1503 * other devices, pass the request up to our parent. 1504 */ 1505 if (bus == device_get_parent(child)) { 1506 ad = device_get_ivars(child); 1507 rl = &ad->ad_rl; 1508 1509 /* 1510 * Simulate the behavior of the ISA bus for direct children 1511 * devices. That is, if a non-default range is specified for 1512 * a resource that doesn't exist, use bus_set_resource() to 1513 * add the resource before allocating it. Note that these 1514 * resources will not be reserved. 1515 */ 1516 if (!isdefault && resource_list_find(rl, type, *rid) == NULL) 1517 resource_list_add(rl, type, *rid, start, end, count); 1518 res = resource_list_alloc(rl, bus, child, type, rid, start, end, count, 1519 flags); 1520 #ifndef INTRNG 1521 if (res != NULL && type == SYS_RES_IRQ) { 1522 /* 1523 * Since bus_config_intr() takes immediate effect, we cannot 1524 * configure the interrupt associated with a device when we 1525 * parse the resources but have to defer it until a driver 1526 * actually allocates the interrupt via bus_alloc_resource(). 1527 * 1528 * XXX: Should we handle the lookup failing? 1529 */ 1530 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares))) 1531 acpi_config_intr(child, &ares); 1532 } 1533 #endif 1534 1535 /* 1536 * If this is an allocation of the "default" range for a given 1537 * RID, fetch the exact bounds for this resource from the 1538 * resource list entry to try to allocate the range from the 1539 * system resource regions. 1540 */ 1541 if (res == NULL && isdefault) { 1542 rle = resource_list_find(rl, type, *rid); 1543 if (rle != NULL) { 1544 start = rle->start; 1545 end = rle->end; 1546 count = rle->count; 1547 } 1548 } 1549 } else 1550 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid, 1551 start, end, count, flags); 1552 1553 /* 1554 * If the first attempt failed and this is an allocation of a 1555 * specific range, try to satisfy the request via a suballocation 1556 * from our system resource regions. 1557 */ 1558 if (res == NULL && start + count - 1 == end) 1559 res = acpi_alloc_sysres(child, type, rid, start, end, count, flags); 1560 return (res); 1561 } 1562 1563 /* 1564 * Attempt to allocate a specific resource range from the system 1565 * resource ranges. Note that we only handle memory and I/O port 1566 * system resources. 1567 */ 1568 struct resource * 1569 acpi_alloc_sysres(device_t child, int type, int *rid, rman_res_t start, 1570 rman_res_t end, rman_res_t count, u_int flags) 1571 { 1572 struct rman *rm; 1573 struct resource *res; 1574 1575 switch (type) { 1576 case SYS_RES_IOPORT: 1577 rm = &acpi_rman_io; 1578 break; 1579 case SYS_RES_MEMORY: 1580 rm = &acpi_rman_mem; 1581 break; 1582 default: 1583 return (NULL); 1584 } 1585 1586 KASSERT(start + count - 1 == end, ("wildcard resource range")); 1587 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE, 1588 child); 1589 if (res == NULL) 1590 return (NULL); 1591 1592 rman_set_rid(res, *rid); 1593 1594 /* If requested, activate the resource using the parent's method. */ 1595 if (flags & RF_ACTIVE) 1596 if (bus_activate_resource(child, type, *rid, res) != 0) { 1597 rman_release_resource(res); 1598 return (NULL); 1599 } 1600 1601 return (res); 1602 } 1603 1604 static int 1605 acpi_is_resource_managed(int type, struct resource *r) 1606 { 1607 1608 /* We only handle memory and IO resources through rman. */ 1609 switch (type) { 1610 case SYS_RES_IOPORT: 1611 return (rman_is_region_manager(r, &acpi_rman_io)); 1612 case SYS_RES_MEMORY: 1613 return (rman_is_region_manager(r, &acpi_rman_mem)); 1614 } 1615 return (0); 1616 } 1617 1618 static int 1619 acpi_adjust_resource(device_t bus, device_t child, int type, struct resource *r, 1620 rman_res_t start, rman_res_t end) 1621 { 1622 1623 if (acpi_is_resource_managed(type, r)) 1624 return (rman_adjust_resource(r, start, end)); 1625 return (bus_generic_adjust_resource(bus, child, type, r, start, end)); 1626 } 1627 1628 static int 1629 acpi_release_resource(device_t bus, device_t child, int type, int rid, 1630 struct resource *r) 1631 { 1632 int ret; 1633 1634 /* 1635 * If this resource belongs to one of our internal managers, 1636 * deactivate it and release it to the local pool. 1637 */ 1638 if (acpi_is_resource_managed(type, r)) { 1639 if (rman_get_flags(r) & RF_ACTIVE) { 1640 ret = bus_deactivate_resource(child, type, rid, r); 1641 if (ret != 0) 1642 return (ret); 1643 } 1644 return (rman_release_resource(r)); 1645 } 1646 1647 return (bus_generic_rl_release_resource(bus, child, type, rid, r)); 1648 } 1649 1650 static void 1651 acpi_delete_resource(device_t bus, device_t child, int type, int rid) 1652 { 1653 struct resource_list *rl; 1654 1655 rl = acpi_get_rlist(bus, child); 1656 if (resource_list_busy(rl, type, rid)) { 1657 device_printf(bus, "delete_resource: Resource still owned by child" 1658 " (type=%d, rid=%d)\n", type, rid); 1659 return; 1660 } 1661 resource_list_unreserve(rl, bus, child, type, rid); 1662 resource_list_delete(rl, type, rid); 1663 } 1664 1665 /* Allocate an IO port or memory resource, given its GAS. */ 1666 int 1667 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas, 1668 struct resource **res, u_int flags) 1669 { 1670 int error, res_type; 1671 1672 error = ENOMEM; 1673 if (type == NULL || rid == NULL || gas == NULL || res == NULL) 1674 return (EINVAL); 1675 1676 /* We only support memory and IO spaces. */ 1677 switch (gas->SpaceId) { 1678 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 1679 res_type = SYS_RES_MEMORY; 1680 break; 1681 case ACPI_ADR_SPACE_SYSTEM_IO: 1682 res_type = SYS_RES_IOPORT; 1683 break; 1684 default: 1685 return (EOPNOTSUPP); 1686 } 1687 1688 /* 1689 * If the register width is less than 8, assume the BIOS author means 1690 * it is a bit field and just allocate a byte. 1691 */ 1692 if (gas->BitWidth && gas->BitWidth < 8) 1693 gas->BitWidth = 8; 1694 1695 /* Validate the address after we're sure we support the space. */ 1696 if (gas->Address == 0 || gas->BitWidth == 0) 1697 return (EINVAL); 1698 1699 bus_set_resource(dev, res_type, *rid, gas->Address, 1700 gas->BitWidth / 8); 1701 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags); 1702 if (*res != NULL) { 1703 *type = res_type; 1704 error = 0; 1705 } else 1706 bus_delete_resource(dev, res_type, *rid); 1707 1708 return (error); 1709 } 1710 1711 /* Probe _HID and _CID for compatible ISA PNP ids. */ 1712 static uint32_t 1713 acpi_isa_get_logicalid(device_t dev) 1714 { 1715 ACPI_DEVICE_INFO *devinfo; 1716 ACPI_HANDLE h; 1717 uint32_t pnpid; 1718 1719 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1720 1721 /* Fetch and validate the HID. */ 1722 if ((h = acpi_get_handle(dev)) == NULL || 1723 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 1724 return_VALUE (0); 1725 1726 pnpid = (devinfo->Valid & ACPI_VALID_HID) != 0 && 1727 devinfo->HardwareId.Length >= ACPI_EISAID_STRING_SIZE ? 1728 PNP_EISAID(devinfo->HardwareId.String) : 0; 1729 AcpiOsFree(devinfo); 1730 1731 return_VALUE (pnpid); 1732 } 1733 1734 static int 1735 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count) 1736 { 1737 ACPI_DEVICE_INFO *devinfo; 1738 ACPI_PNP_DEVICE_ID *ids; 1739 ACPI_HANDLE h; 1740 uint32_t *pnpid; 1741 int i, valid; 1742 1743 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1744 1745 pnpid = cids; 1746 1747 /* Fetch and validate the CID */ 1748 if ((h = acpi_get_handle(dev)) == NULL || 1749 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 1750 return_VALUE (0); 1751 1752 if ((devinfo->Valid & ACPI_VALID_CID) == 0) { 1753 AcpiOsFree(devinfo); 1754 return_VALUE (0); 1755 } 1756 1757 if (devinfo->CompatibleIdList.Count < count) 1758 count = devinfo->CompatibleIdList.Count; 1759 ids = devinfo->CompatibleIdList.Ids; 1760 for (i = 0, valid = 0; i < count; i++) 1761 if (ids[i].Length >= ACPI_EISAID_STRING_SIZE && 1762 strncmp(ids[i].String, "PNP", 3) == 0) { 1763 *pnpid++ = PNP_EISAID(ids[i].String); 1764 valid++; 1765 } 1766 AcpiOsFree(devinfo); 1767 1768 return_VALUE (valid); 1769 } 1770 1771 static int 1772 acpi_device_id_probe(device_t bus, device_t dev, char **ids, char **match) 1773 { 1774 ACPI_HANDLE h; 1775 ACPI_OBJECT_TYPE t; 1776 int rv; 1777 int i; 1778 1779 h = acpi_get_handle(dev); 1780 if (ids == NULL || h == NULL) 1781 return (ENXIO); 1782 t = acpi_get_type(dev); 1783 if (t != ACPI_TYPE_DEVICE && t != ACPI_TYPE_PROCESSOR) 1784 return (ENXIO); 1785 1786 /* Try to match one of the array of IDs with a HID or CID. */ 1787 for (i = 0; ids[i] != NULL; i++) { 1788 rv = acpi_MatchHid(h, ids[i]); 1789 if (rv == ACPI_MATCHHID_NOMATCH) 1790 continue; 1791 1792 if (match != NULL) { 1793 *match = ids[i]; 1794 } 1795 return ((rv == ACPI_MATCHHID_HID)? 1796 BUS_PROBE_DEFAULT : BUS_PROBE_LOW_PRIORITY); 1797 } 1798 return (ENXIO); 1799 } 1800 1801 static ACPI_STATUS 1802 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname, 1803 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret) 1804 { 1805 ACPI_HANDLE h; 1806 1807 if (dev == NULL) 1808 h = ACPI_ROOT_OBJECT; 1809 else if ((h = acpi_get_handle(dev)) == NULL) 1810 return (AE_BAD_PARAMETER); 1811 return (AcpiEvaluateObject(h, pathname, parameters, ret)); 1812 } 1813 1814 static ACPI_STATUS 1815 acpi_device_get_prop(device_t bus, device_t dev, ACPI_STRING propname, 1816 const ACPI_OBJECT **value) 1817 { 1818 const ACPI_OBJECT *pkg, *name, *val; 1819 struct acpi_device *ad; 1820 ACPI_STATUS status; 1821 int i; 1822 1823 ad = device_get_ivars(dev); 1824 1825 if (ad == NULL || propname == NULL) 1826 return (AE_BAD_PARAMETER); 1827 if (ad->dsd_pkg == NULL) { 1828 if (ad->dsd.Pointer == NULL) { 1829 status = acpi_find_dsd(ad); 1830 if (ACPI_FAILURE(status)) 1831 return (status); 1832 } else { 1833 return (AE_NOT_FOUND); 1834 } 1835 } 1836 1837 for (i = 0; i < ad->dsd_pkg->Package.Count; i ++) { 1838 pkg = &ad->dsd_pkg->Package.Elements[i]; 1839 if (pkg->Type != ACPI_TYPE_PACKAGE || pkg->Package.Count != 2) 1840 continue; 1841 1842 name = &pkg->Package.Elements[0]; 1843 val = &pkg->Package.Elements[1]; 1844 if (name->Type != ACPI_TYPE_STRING) 1845 continue; 1846 if (strncmp(propname, name->String.Pointer, name->String.Length) == 0) { 1847 if (value != NULL) 1848 *value = val; 1849 1850 return (AE_OK); 1851 } 1852 } 1853 1854 return (AE_NOT_FOUND); 1855 } 1856 1857 static ACPI_STATUS 1858 acpi_find_dsd(struct acpi_device *ad) 1859 { 1860 const ACPI_OBJECT *dsd, *guid, *pkg; 1861 ACPI_STATUS status; 1862 1863 ad->dsd.Length = ACPI_ALLOCATE_BUFFER; 1864 ad->dsd.Pointer = NULL; 1865 ad->dsd_pkg = NULL; 1866 1867 status = AcpiEvaluateObject(ad->ad_handle, "_DSD", NULL, &ad->dsd); 1868 if (ACPI_FAILURE(status)) 1869 return (status); 1870 1871 dsd = ad->dsd.Pointer; 1872 guid = &dsd->Package.Elements[0]; 1873 pkg = &dsd->Package.Elements[1]; 1874 1875 if (guid->Type != ACPI_TYPE_BUFFER || pkg->Type != ACPI_TYPE_PACKAGE || 1876 guid->Buffer.Length != sizeof(acpi_dsd_uuid)) 1877 return (AE_NOT_FOUND); 1878 if (memcmp(guid->Buffer.Pointer, &acpi_dsd_uuid, 1879 sizeof(acpi_dsd_uuid)) == 0) { 1880 1881 ad->dsd_pkg = pkg; 1882 return (AE_OK); 1883 } 1884 1885 return (AE_NOT_FOUND); 1886 } 1887 1888 static ssize_t 1889 acpi_bus_get_prop_handle(const ACPI_OBJECT *hobj, void *propvalue, size_t size) 1890 { 1891 ACPI_OBJECT *pobj; 1892 ACPI_HANDLE h; 1893 1894 if (hobj->Type != ACPI_TYPE_PACKAGE) 1895 goto err; 1896 if (hobj->Package.Count != 1) 1897 goto err; 1898 1899 pobj = &hobj->Package.Elements[0]; 1900 if (pobj == NULL) 1901 goto err; 1902 if (pobj->Type != ACPI_TYPE_LOCAL_REFERENCE) 1903 goto err; 1904 1905 h = acpi_GetReference(NULL, pobj); 1906 if (h == NULL) 1907 goto err; 1908 1909 if (propvalue != NULL && size >= sizeof(ACPI_HANDLE)) 1910 *(ACPI_HANDLE *)propvalue = h; 1911 return (sizeof(ACPI_HANDLE)); 1912 1913 err: 1914 return (-1); 1915 } 1916 1917 static ssize_t 1918 acpi_bus_get_prop(device_t bus, device_t child, const char *propname, 1919 void *propvalue, size_t size, device_property_type_t type) 1920 { 1921 ACPI_STATUS status; 1922 const ACPI_OBJECT *obj; 1923 1924 status = acpi_device_get_prop(bus, child, __DECONST(char *, propname), 1925 &obj); 1926 if (ACPI_FAILURE(status)) 1927 return (-1); 1928 1929 switch (type) { 1930 case DEVICE_PROP_ANY: 1931 case DEVICE_PROP_BUFFER: 1932 case DEVICE_PROP_UINT32: 1933 case DEVICE_PROP_UINT64: 1934 break; 1935 case DEVICE_PROP_HANDLE: 1936 return (acpi_bus_get_prop_handle(obj, propvalue, size)); 1937 default: 1938 return (-1); 1939 } 1940 1941 switch (obj->Type) { 1942 case ACPI_TYPE_INTEGER: 1943 if (type == DEVICE_PROP_UINT32) { 1944 if (propvalue != NULL && size >= sizeof(uint32_t)) 1945 *((uint32_t *)propvalue) = obj->Integer.Value; 1946 return (sizeof(uint32_t)); 1947 } 1948 if (propvalue != NULL && size >= sizeof(uint64_t)) 1949 *((uint64_t *) propvalue) = obj->Integer.Value; 1950 return (sizeof(uint64_t)); 1951 1952 case ACPI_TYPE_STRING: 1953 if (type != DEVICE_PROP_ANY && 1954 type != DEVICE_PROP_BUFFER) 1955 return (-1); 1956 1957 if (propvalue != NULL && size > 0) 1958 memcpy(propvalue, obj->String.Pointer, 1959 MIN(size, obj->String.Length)); 1960 return (obj->String.Length); 1961 1962 case ACPI_TYPE_BUFFER: 1963 if (propvalue != NULL && size > 0) 1964 memcpy(propvalue, obj->Buffer.Pointer, 1965 MIN(size, obj->Buffer.Length)); 1966 return (obj->Buffer.Length); 1967 1968 case ACPI_TYPE_PACKAGE: 1969 if (propvalue != NULL && size >= sizeof(ACPI_OBJECT *)) { 1970 *((ACPI_OBJECT **) propvalue) = 1971 __DECONST(ACPI_OBJECT *, obj); 1972 } 1973 return (sizeof(ACPI_OBJECT *)); 1974 1975 case ACPI_TYPE_LOCAL_REFERENCE: 1976 if (propvalue != NULL && size >= sizeof(ACPI_HANDLE)) { 1977 ACPI_HANDLE h; 1978 1979 h = acpi_GetReference(NULL, 1980 __DECONST(ACPI_OBJECT *, obj)); 1981 memcpy(propvalue, h, sizeof(ACPI_HANDLE)); 1982 } 1983 return (sizeof(ACPI_HANDLE)); 1984 default: 1985 return (0); 1986 } 1987 } 1988 1989 int 1990 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate) 1991 { 1992 struct acpi_softc *sc; 1993 ACPI_HANDLE handle; 1994 ACPI_STATUS status; 1995 char sxd[8]; 1996 1997 handle = acpi_get_handle(dev); 1998 1999 /* 2000 * XXX If we find these devices, don't try to power them down. 2001 * The serial and IRDA ports on my T23 hang the system when 2002 * set to D3 and it appears that such legacy devices may 2003 * need special handling in their drivers. 2004 */ 2005 if (dstate == NULL || handle == NULL || 2006 acpi_MatchHid(handle, "PNP0500") || 2007 acpi_MatchHid(handle, "PNP0501") || 2008 acpi_MatchHid(handle, "PNP0502") || 2009 acpi_MatchHid(handle, "PNP0510") || 2010 acpi_MatchHid(handle, "PNP0511")) 2011 return (ENXIO); 2012 2013 /* 2014 * Override next state with the value from _SxD, if present. 2015 * Note illegal _S0D is evaluated because some systems expect this. 2016 */ 2017 sc = device_get_softc(bus); 2018 snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate); 2019 status = acpi_GetInteger(handle, sxd, dstate); 2020 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { 2021 device_printf(dev, "failed to get %s on %s: %s\n", sxd, 2022 acpi_name(handle), AcpiFormatException(status)); 2023 return (ENXIO); 2024 } 2025 2026 return (0); 2027 } 2028 2029 /* Callback arg for our implementation of walking the namespace. */ 2030 struct acpi_device_scan_ctx { 2031 acpi_scan_cb_t user_fn; 2032 void *arg; 2033 ACPI_HANDLE parent; 2034 }; 2035 2036 static ACPI_STATUS 2037 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval) 2038 { 2039 struct acpi_device_scan_ctx *ctx; 2040 device_t dev, old_dev; 2041 ACPI_STATUS status; 2042 ACPI_OBJECT_TYPE type; 2043 2044 /* 2045 * Skip this device if we think we'll have trouble with it or it is 2046 * the parent where the scan began. 2047 */ 2048 ctx = (struct acpi_device_scan_ctx *)arg; 2049 if (acpi_avoid(h) || h == ctx->parent) 2050 return (AE_OK); 2051 2052 /* If this is not a valid device type (e.g., a method), skip it. */ 2053 if (ACPI_FAILURE(AcpiGetType(h, &type))) 2054 return (AE_OK); 2055 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR && 2056 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER) 2057 return (AE_OK); 2058 2059 /* 2060 * Call the user function with the current device. If it is unchanged 2061 * afterwards, return. Otherwise, we update the handle to the new dev. 2062 */ 2063 old_dev = acpi_get_device(h); 2064 dev = old_dev; 2065 status = ctx->user_fn(h, &dev, level, ctx->arg); 2066 if (ACPI_FAILURE(status) || old_dev == dev) 2067 return (status); 2068 2069 /* Remove the old child and its connection to the handle. */ 2070 if (old_dev != NULL) 2071 device_delete_child(device_get_parent(old_dev), old_dev); 2072 2073 /* Recreate the handle association if the user created a device. */ 2074 if (dev != NULL) 2075 AcpiAttachData(h, acpi_fake_objhandler, dev); 2076 2077 return (AE_OK); 2078 } 2079 2080 static ACPI_STATUS 2081 acpi_device_scan_children(device_t bus, device_t dev, int max_depth, 2082 acpi_scan_cb_t user_fn, void *arg) 2083 { 2084 ACPI_HANDLE h; 2085 struct acpi_device_scan_ctx ctx; 2086 2087 if (acpi_disabled("children")) 2088 return (AE_OK); 2089 2090 if (dev == NULL) 2091 h = ACPI_ROOT_OBJECT; 2092 else if ((h = acpi_get_handle(dev)) == NULL) 2093 return (AE_BAD_PARAMETER); 2094 ctx.user_fn = user_fn; 2095 ctx.arg = arg; 2096 ctx.parent = h; 2097 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth, 2098 acpi_device_scan_cb, NULL, &ctx, NULL)); 2099 } 2100 2101 /* 2102 * Even though ACPI devices are not PCI, we use the PCI approach for setting 2103 * device power states since it's close enough to ACPI. 2104 */ 2105 int 2106 acpi_set_powerstate(device_t child, int state) 2107 { 2108 ACPI_HANDLE h; 2109 ACPI_STATUS status; 2110 2111 h = acpi_get_handle(child); 2112 if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX) 2113 return (EINVAL); 2114 if (h == NULL) 2115 return (0); 2116 2117 /* Ignore errors if the power methods aren't present. */ 2118 status = acpi_pwr_switch_consumer(h, state); 2119 if (ACPI_SUCCESS(status)) { 2120 if (bootverbose) 2121 device_printf(child, "set ACPI power state D%d on %s\n", 2122 state, acpi_name(h)); 2123 } else if (status != AE_NOT_FOUND) 2124 device_printf(child, 2125 "failed to set ACPI power state D%d on %s: %s\n", state, 2126 acpi_name(h), AcpiFormatException(status)); 2127 2128 return (0); 2129 } 2130 2131 static int 2132 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids) 2133 { 2134 int result, cid_count, i; 2135 uint32_t lid, cids[8]; 2136 2137 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 2138 2139 /* 2140 * ISA-style drivers attached to ACPI may persist and 2141 * probe manually if we return ENOENT. We never want 2142 * that to happen, so don't ever return it. 2143 */ 2144 result = ENXIO; 2145 2146 /* Scan the supplied IDs for a match */ 2147 lid = acpi_isa_get_logicalid(child); 2148 cid_count = acpi_isa_get_compatid(child, cids, 8); 2149 while (ids && ids->ip_id) { 2150 if (lid == ids->ip_id) { 2151 result = 0; 2152 goto out; 2153 } 2154 for (i = 0; i < cid_count; i++) { 2155 if (cids[i] == ids->ip_id) { 2156 result = 0; 2157 goto out; 2158 } 2159 } 2160 ids++; 2161 } 2162 2163 out: 2164 if (result == 0 && ids->ip_desc) 2165 device_set_desc(child, ids->ip_desc); 2166 2167 return_VALUE (result); 2168 } 2169 2170 /* 2171 * Look for a MCFG table. If it is present, use the settings for 2172 * domain (segment) 0 to setup PCI config space access via the memory 2173 * map. 2174 * 2175 * On non-x86 architectures (arm64 for now), this will be done from the 2176 * PCI host bridge driver. 2177 */ 2178 static void 2179 acpi_enable_pcie(void) 2180 { 2181 #if defined(__i386__) || defined(__amd64__) 2182 ACPI_TABLE_HEADER *hdr; 2183 ACPI_MCFG_ALLOCATION *alloc, *end; 2184 ACPI_STATUS status; 2185 2186 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr); 2187 if (ACPI_FAILURE(status)) 2188 return; 2189 2190 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length); 2191 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1); 2192 while (alloc < end) { 2193 pcie_cfgregopen(alloc->Address, alloc->PciSegment, 2194 alloc->StartBusNumber, alloc->EndBusNumber); 2195 alloc++; 2196 } 2197 #endif 2198 } 2199 2200 static void 2201 acpi_platform_osc(device_t dev) 2202 { 2203 ACPI_HANDLE sb_handle; 2204 ACPI_STATUS status; 2205 uint32_t cap_set[2]; 2206 2207 /* 0811B06E-4A27-44F9-8D60-3CBBC22E7B48 */ 2208 static uint8_t acpi_platform_uuid[ACPI_UUID_LENGTH] = { 2209 0x6e, 0xb0, 0x11, 0x08, 0x27, 0x4a, 0xf9, 0x44, 2210 0x8d, 0x60, 0x3c, 0xbb, 0xc2, 0x2e, 0x7b, 0x48 2211 }; 2212 2213 if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) 2214 return; 2215 2216 cap_set[1] = 0x10; /* APEI Support */ 2217 status = acpi_EvaluateOSC(sb_handle, acpi_platform_uuid, 1, 2218 nitems(cap_set), cap_set, cap_set, false); 2219 if (ACPI_FAILURE(status)) { 2220 if (status == AE_NOT_FOUND) 2221 return; 2222 device_printf(dev, "_OSC failed: %s\n", 2223 AcpiFormatException(status)); 2224 return; 2225 } 2226 } 2227 2228 /* 2229 * Scan all of the ACPI namespace and attach child devices. 2230 * 2231 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and 2232 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec. 2233 * However, in violation of the spec, some systems place their PCI link 2234 * devices in \, so we have to walk the whole namespace. We check the 2235 * type of namespace nodes, so this should be ok. 2236 */ 2237 static void 2238 acpi_probe_children(device_t bus) 2239 { 2240 2241 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 2242 2243 /* 2244 * Scan the namespace and insert placeholders for all the devices that 2245 * we find. We also probe/attach any early devices. 2246 * 2247 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because 2248 * we want to create nodes for all devices, not just those that are 2249 * currently present. (This assumes that we don't want to create/remove 2250 * devices as they appear, which might be smarter.) 2251 */ 2252 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n")); 2253 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child, 2254 NULL, bus, NULL); 2255 2256 /* Pre-allocate resources for our rman from any sysresource devices. */ 2257 acpi_sysres_alloc(bus); 2258 2259 /* Reserve resources already allocated to children. */ 2260 acpi_reserve_resources(bus); 2261 2262 /* Create any static children by calling device identify methods. */ 2263 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n")); 2264 bus_generic_probe(bus); 2265 2266 /* Probe/attach all children, created statically and from the namespace. */ 2267 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "acpi bus_generic_attach\n")); 2268 bus_generic_attach(bus); 2269 2270 /* Attach wake sysctls. */ 2271 acpi_wake_sysctl_walk(bus); 2272 2273 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n")); 2274 return_VOID; 2275 } 2276 2277 /* 2278 * Determine the probe order for a given device. 2279 */ 2280 static void 2281 acpi_probe_order(ACPI_HANDLE handle, int *order) 2282 { 2283 ACPI_OBJECT_TYPE type; 2284 2285 /* 2286 * 0. CPUs 2287 * 1. I/O port and memory system resource holders 2288 * 2. Clocks and timers (to handle early accesses) 2289 * 3. Embedded controllers (to handle early accesses) 2290 * 4. PCI Link Devices 2291 */ 2292 AcpiGetType(handle, &type); 2293 if (type == ACPI_TYPE_PROCESSOR) 2294 *order = 0; 2295 else if (acpi_MatchHid(handle, "PNP0C01") || 2296 acpi_MatchHid(handle, "PNP0C02")) 2297 *order = 1; 2298 else if (acpi_MatchHid(handle, "PNP0100") || 2299 acpi_MatchHid(handle, "PNP0103") || 2300 acpi_MatchHid(handle, "PNP0B00")) 2301 *order = 2; 2302 else if (acpi_MatchHid(handle, "PNP0C09")) 2303 *order = 3; 2304 else if (acpi_MatchHid(handle, "PNP0C0F")) 2305 *order = 4; 2306 } 2307 2308 /* 2309 * Evaluate a child device and determine whether we might attach a device to 2310 * it. 2311 */ 2312 static ACPI_STATUS 2313 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 2314 { 2315 ACPI_DEVICE_INFO *devinfo; 2316 struct acpi_device *ad; 2317 struct acpi_prw_data prw; 2318 ACPI_OBJECT_TYPE type; 2319 ACPI_HANDLE h; 2320 device_t bus, child; 2321 char *handle_str; 2322 int order; 2323 2324 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 2325 2326 if (acpi_disabled("children")) 2327 return_ACPI_STATUS (AE_OK); 2328 2329 /* Skip this device if we think we'll have trouble with it. */ 2330 if (acpi_avoid(handle)) 2331 return_ACPI_STATUS (AE_OK); 2332 2333 bus = (device_t)context; 2334 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) { 2335 handle_str = acpi_name(handle); 2336 switch (type) { 2337 case ACPI_TYPE_DEVICE: 2338 /* 2339 * Since we scan from \, be sure to skip system scope objects. 2340 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around 2341 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run 2342 * during the initialization and \_TZ_ is to support Notify() on it. 2343 */ 2344 if (strcmp(handle_str, "\\_SB_") == 0 || 2345 strcmp(handle_str, "\\_TZ_") == 0) 2346 break; 2347 if (acpi_parse_prw(handle, &prw) == 0) 2348 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit); 2349 2350 /* 2351 * Ignore devices that do not have a _HID or _CID. They should 2352 * be discovered by other buses (e.g. the PCI bus driver). 2353 */ 2354 if (!acpi_has_hid(handle)) 2355 break; 2356 /* FALLTHROUGH */ 2357 case ACPI_TYPE_PROCESSOR: 2358 case ACPI_TYPE_THERMAL: 2359 case ACPI_TYPE_POWER: 2360 /* 2361 * Create a placeholder device for this node. Sort the 2362 * placeholder so that the probe/attach passes will run 2363 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER 2364 * are reserved for special objects (i.e., system 2365 * resources). 2366 */ 2367 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str)); 2368 order = level * 10 + ACPI_DEV_BASE_ORDER; 2369 acpi_probe_order(handle, &order); 2370 child = BUS_ADD_CHILD(bus, order, NULL, -1); 2371 if (child == NULL) 2372 break; 2373 2374 /* Associate the handle with the device_t and vice versa. */ 2375 acpi_set_handle(child, handle); 2376 AcpiAttachData(handle, acpi_fake_objhandler, child); 2377 2378 /* 2379 * Check that the device is present. If it's not present, 2380 * leave it disabled (so that we have a device_t attached to 2381 * the handle, but we don't probe it). 2382 * 2383 * XXX PCI link devices sometimes report "present" but not 2384 * "functional" (i.e. if disabled). Go ahead and probe them 2385 * anyway since we may enable them later. 2386 */ 2387 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) { 2388 /* Never disable PCI link devices. */ 2389 if (acpi_MatchHid(handle, "PNP0C0F")) 2390 break; 2391 2392 /* 2393 * RTC Device should be enabled for CMOS register space 2394 * unless FADT indicate it is not present. 2395 * (checked in RTC probe routine.) 2396 */ 2397 if (acpi_MatchHid(handle, "PNP0B00")) 2398 break; 2399 2400 /* 2401 * Docking stations should remain enabled since the system 2402 * may be undocked at boot. 2403 */ 2404 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h))) 2405 break; 2406 2407 device_disable(child); 2408 break; 2409 } 2410 2411 /* 2412 * Get the device's resource settings and attach them. 2413 * Note that if the device has _PRS but no _CRS, we need 2414 * to decide when it's appropriate to try to configure the 2415 * device. Ignore the return value here; it's OK for the 2416 * device not to have any resources. 2417 */ 2418 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL); 2419 2420 ad = device_get_ivars(child); 2421 ad->ad_cls_class = 0xffffff; 2422 if (ACPI_SUCCESS(AcpiGetObjectInfo(handle, &devinfo))) { 2423 if ((devinfo->Valid & ACPI_VALID_CLS) != 0 && 2424 devinfo->ClassCode.Length >= ACPI_PCICLS_STRING_SIZE) { 2425 ad->ad_cls_class = strtoul(devinfo->ClassCode.String, 2426 NULL, 16); 2427 } 2428 AcpiOsFree(devinfo); 2429 } 2430 break; 2431 } 2432 } 2433 2434 return_ACPI_STATUS (AE_OK); 2435 } 2436 2437 /* 2438 * AcpiAttachData() requires an object handler but never uses it. This is a 2439 * placeholder object handler so we can store a device_t in an ACPI_HANDLE. 2440 */ 2441 void 2442 acpi_fake_objhandler(ACPI_HANDLE h, void *data) 2443 { 2444 } 2445 2446 static void 2447 acpi_shutdown_final(void *arg, int howto) 2448 { 2449 struct acpi_softc *sc = (struct acpi_softc *)arg; 2450 register_t intr; 2451 ACPI_STATUS status; 2452 2453 /* 2454 * XXX Shutdown code should only run on the BSP (cpuid 0). 2455 * Some chipsets do not power off the system correctly if called from 2456 * an AP. 2457 */ 2458 if ((howto & RB_POWEROFF) != 0) { 2459 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 2460 if (ACPI_FAILURE(status)) { 2461 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 2462 AcpiFormatException(status)); 2463 return; 2464 } 2465 device_printf(sc->acpi_dev, "Powering system off\n"); 2466 intr = intr_disable(); 2467 status = AcpiEnterSleepState(ACPI_STATE_S5); 2468 if (ACPI_FAILURE(status)) { 2469 intr_restore(intr); 2470 device_printf(sc->acpi_dev, "power-off failed - %s\n", 2471 AcpiFormatException(status)); 2472 } else { 2473 DELAY(1000000); 2474 intr_restore(intr); 2475 device_printf(sc->acpi_dev, "power-off failed - timeout\n"); 2476 } 2477 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) { 2478 /* Reboot using the reset register. */ 2479 status = AcpiReset(); 2480 if (ACPI_SUCCESS(status)) { 2481 DELAY(1000000); 2482 device_printf(sc->acpi_dev, "reset failed - timeout\n"); 2483 } else if (status != AE_NOT_EXIST) 2484 device_printf(sc->acpi_dev, "reset failed - %s\n", 2485 AcpiFormatException(status)); 2486 } else if (sc->acpi_do_disable && !KERNEL_PANICKED()) { 2487 /* 2488 * Only disable ACPI if the user requested. On some systems, writing 2489 * the disable value to SMI_CMD hangs the system. 2490 */ 2491 device_printf(sc->acpi_dev, "Shutting down\n"); 2492 AcpiTerminate(); 2493 } 2494 } 2495 2496 static void 2497 acpi_enable_fixed_events(struct acpi_softc *sc) 2498 { 2499 static int first_time = 1; 2500 2501 /* Enable and clear fixed events and install handlers. */ 2502 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) { 2503 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 2504 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON, 2505 acpi_event_power_button_sleep, sc); 2506 if (first_time) 2507 device_printf(sc->acpi_dev, "Power Button (fixed)\n"); 2508 } 2509 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) { 2510 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 2511 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON, 2512 acpi_event_sleep_button_sleep, sc); 2513 if (first_time) 2514 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n"); 2515 } 2516 2517 first_time = 0; 2518 } 2519 2520 /* 2521 * Returns true if the device is actually present and should 2522 * be attached to. This requires the present, enabled, UI-visible 2523 * and diagnostics-passed bits to be set. 2524 */ 2525 BOOLEAN 2526 acpi_DeviceIsPresent(device_t dev) 2527 { 2528 ACPI_HANDLE h; 2529 UINT32 s; 2530 ACPI_STATUS status; 2531 2532 h = acpi_get_handle(dev); 2533 if (h == NULL) 2534 return (FALSE); 2535 2536 #ifdef ACPI_EARLY_EPYC_WAR 2537 /* 2538 * Certain Treadripper boards always returns 0 for FreeBSD because it 2539 * only returns non-zero for the OS string "Windows 2015". Otherwise it 2540 * will return zero. Force them to always be treated as present. 2541 * Beata versions were worse: they always returned 0. 2542 */ 2543 if (acpi_MatchHid(h, "AMDI0020") || acpi_MatchHid(h, "AMDI0010")) 2544 return (TRUE); 2545 #endif 2546 2547 status = acpi_GetInteger(h, "_STA", &s); 2548 2549 /* 2550 * If no _STA method or if it failed, then assume that 2551 * the device is present. 2552 */ 2553 if (ACPI_FAILURE(status)) 2554 return (TRUE); 2555 2556 return (ACPI_DEVICE_PRESENT(s) ? TRUE : FALSE); 2557 } 2558 2559 /* 2560 * Returns true if the battery is actually present and inserted. 2561 */ 2562 BOOLEAN 2563 acpi_BatteryIsPresent(device_t dev) 2564 { 2565 ACPI_HANDLE h; 2566 UINT32 s; 2567 ACPI_STATUS status; 2568 2569 h = acpi_get_handle(dev); 2570 if (h == NULL) 2571 return (FALSE); 2572 status = acpi_GetInteger(h, "_STA", &s); 2573 2574 /* 2575 * If no _STA method or if it failed, then assume that 2576 * the device is present. 2577 */ 2578 if (ACPI_FAILURE(status)) 2579 return (TRUE); 2580 2581 return (ACPI_BATTERY_PRESENT(s) ? TRUE : FALSE); 2582 } 2583 2584 /* 2585 * Returns true if a device has at least one valid device ID. 2586 */ 2587 BOOLEAN 2588 acpi_has_hid(ACPI_HANDLE h) 2589 { 2590 ACPI_DEVICE_INFO *devinfo; 2591 BOOLEAN ret; 2592 2593 if (h == NULL || 2594 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 2595 return (FALSE); 2596 2597 ret = FALSE; 2598 if ((devinfo->Valid & ACPI_VALID_HID) != 0) 2599 ret = TRUE; 2600 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) 2601 if (devinfo->CompatibleIdList.Count > 0) 2602 ret = TRUE; 2603 2604 AcpiOsFree(devinfo); 2605 return (ret); 2606 } 2607 2608 /* 2609 * Match a HID string against a handle 2610 * returns ACPI_MATCHHID_HID if _HID match 2611 * ACPI_MATCHHID_CID if _CID match and not _HID match. 2612 * ACPI_MATCHHID_NOMATCH=0 if no match. 2613 */ 2614 int 2615 acpi_MatchHid(ACPI_HANDLE h, const char *hid) 2616 { 2617 ACPI_DEVICE_INFO *devinfo; 2618 BOOLEAN ret; 2619 int i; 2620 2621 if (hid == NULL || h == NULL || 2622 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 2623 return (ACPI_MATCHHID_NOMATCH); 2624 2625 ret = ACPI_MATCHHID_NOMATCH; 2626 if ((devinfo->Valid & ACPI_VALID_HID) != 0 && 2627 strcmp(hid, devinfo->HardwareId.String) == 0) 2628 ret = ACPI_MATCHHID_HID; 2629 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) 2630 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) { 2631 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) { 2632 ret = ACPI_MATCHHID_CID; 2633 break; 2634 } 2635 } 2636 2637 AcpiOsFree(devinfo); 2638 return (ret); 2639 } 2640 2641 /* 2642 * Return the handle of a named object within our scope, ie. that of (parent) 2643 * or one if its parents. 2644 */ 2645 ACPI_STATUS 2646 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result) 2647 { 2648 ACPI_HANDLE r; 2649 ACPI_STATUS status; 2650 2651 /* Walk back up the tree to the root */ 2652 for (;;) { 2653 status = AcpiGetHandle(parent, path, &r); 2654 if (ACPI_SUCCESS(status)) { 2655 *result = r; 2656 return (AE_OK); 2657 } 2658 /* XXX Return error here? */ 2659 if (status != AE_NOT_FOUND) 2660 return (AE_OK); 2661 if (ACPI_FAILURE(AcpiGetParent(parent, &r))) 2662 return (AE_NOT_FOUND); 2663 parent = r; 2664 } 2665 } 2666 2667 ACPI_STATUS 2668 acpi_GetProperty(device_t dev, ACPI_STRING propname, 2669 const ACPI_OBJECT **value) 2670 { 2671 device_t bus = device_get_parent(dev); 2672 2673 return (ACPI_GET_PROPERTY(bus, dev, propname, value)); 2674 } 2675 2676 /* 2677 * Allocate a buffer with a preset data size. 2678 */ 2679 ACPI_BUFFER * 2680 acpi_AllocBuffer(int size) 2681 { 2682 ACPI_BUFFER *buf; 2683 2684 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL) 2685 return (NULL); 2686 buf->Length = size; 2687 buf->Pointer = (void *)(buf + 1); 2688 return (buf); 2689 } 2690 2691 ACPI_STATUS 2692 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number) 2693 { 2694 ACPI_OBJECT arg1; 2695 ACPI_OBJECT_LIST args; 2696 2697 arg1.Type = ACPI_TYPE_INTEGER; 2698 arg1.Integer.Value = number; 2699 args.Count = 1; 2700 args.Pointer = &arg1; 2701 2702 return (AcpiEvaluateObject(handle, path, &args, NULL)); 2703 } 2704 2705 /* 2706 * Evaluate a path that should return an integer. 2707 */ 2708 ACPI_STATUS 2709 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number) 2710 { 2711 ACPI_STATUS status; 2712 ACPI_BUFFER buf; 2713 ACPI_OBJECT param; 2714 2715 if (handle == NULL) 2716 handle = ACPI_ROOT_OBJECT; 2717 2718 /* 2719 * Assume that what we've been pointed at is an Integer object, or 2720 * a method that will return an Integer. 2721 */ 2722 buf.Pointer = ¶m; 2723 buf.Length = sizeof(param); 2724 status = AcpiEvaluateObject(handle, path, NULL, &buf); 2725 if (ACPI_SUCCESS(status)) { 2726 if (param.Type == ACPI_TYPE_INTEGER) 2727 *number = param.Integer.Value; 2728 else 2729 status = AE_TYPE; 2730 } 2731 2732 /* 2733 * In some applications, a method that's expected to return an Integer 2734 * may instead return a Buffer (probably to simplify some internal 2735 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer, 2736 * convert it into an Integer as best we can. 2737 * 2738 * This is a hack. 2739 */ 2740 if (status == AE_BUFFER_OVERFLOW) { 2741 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) { 2742 status = AE_NO_MEMORY; 2743 } else { 2744 status = AcpiEvaluateObject(handle, path, NULL, &buf); 2745 if (ACPI_SUCCESS(status)) 2746 status = acpi_ConvertBufferToInteger(&buf, number); 2747 AcpiOsFree(buf.Pointer); 2748 } 2749 } 2750 return (status); 2751 } 2752 2753 ACPI_STATUS 2754 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number) 2755 { 2756 ACPI_OBJECT *p; 2757 UINT8 *val; 2758 int i; 2759 2760 p = (ACPI_OBJECT *)bufp->Pointer; 2761 if (p->Type == ACPI_TYPE_INTEGER) { 2762 *number = p->Integer.Value; 2763 return (AE_OK); 2764 } 2765 if (p->Type != ACPI_TYPE_BUFFER) 2766 return (AE_TYPE); 2767 if (p->Buffer.Length > sizeof(int)) 2768 return (AE_BAD_DATA); 2769 2770 *number = 0; 2771 val = p->Buffer.Pointer; 2772 for (i = 0; i < p->Buffer.Length; i++) 2773 *number += val[i] << (i * 8); 2774 return (AE_OK); 2775 } 2776 2777 /* 2778 * Iterate over the elements of an a package object, calling the supplied 2779 * function for each element. 2780 * 2781 * XXX possible enhancement might be to abort traversal on error. 2782 */ 2783 ACPI_STATUS 2784 acpi_ForeachPackageObject(ACPI_OBJECT *pkg, 2785 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg) 2786 { 2787 ACPI_OBJECT *comp; 2788 int i; 2789 2790 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE) 2791 return (AE_BAD_PARAMETER); 2792 2793 /* Iterate over components */ 2794 i = 0; 2795 comp = pkg->Package.Elements; 2796 for (; i < pkg->Package.Count; i++, comp++) 2797 func(comp, arg); 2798 2799 return (AE_OK); 2800 } 2801 2802 /* 2803 * Find the (index)th resource object in a set. 2804 */ 2805 ACPI_STATUS 2806 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp) 2807 { 2808 ACPI_RESOURCE *rp; 2809 int i; 2810 2811 rp = (ACPI_RESOURCE *)buf->Pointer; 2812 i = index; 2813 while (i-- > 0) { 2814 /* Range check */ 2815 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 2816 return (AE_BAD_PARAMETER); 2817 2818 /* Check for terminator */ 2819 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0) 2820 return (AE_NOT_FOUND); 2821 rp = ACPI_NEXT_RESOURCE(rp); 2822 } 2823 if (resp != NULL) 2824 *resp = rp; 2825 2826 return (AE_OK); 2827 } 2828 2829 /* 2830 * Append an ACPI_RESOURCE to an ACPI_BUFFER. 2831 * 2832 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER 2833 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible 2834 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of 2835 * resources. 2836 */ 2837 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512 2838 2839 ACPI_STATUS 2840 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res) 2841 { 2842 ACPI_RESOURCE *rp; 2843 void *newp; 2844 2845 /* Initialise the buffer if necessary. */ 2846 if (buf->Pointer == NULL) { 2847 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE; 2848 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL) 2849 return (AE_NO_MEMORY); 2850 rp = (ACPI_RESOURCE *)buf->Pointer; 2851 rp->Type = ACPI_RESOURCE_TYPE_END_TAG; 2852 rp->Length = ACPI_RS_SIZE_MIN; 2853 } 2854 if (res == NULL) 2855 return (AE_OK); 2856 2857 /* 2858 * Scan the current buffer looking for the terminator. 2859 * This will either find the terminator or hit the end 2860 * of the buffer and return an error. 2861 */ 2862 rp = (ACPI_RESOURCE *)buf->Pointer; 2863 for (;;) { 2864 /* Range check, don't go outside the buffer */ 2865 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) 2866 return (AE_BAD_PARAMETER); 2867 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0) 2868 break; 2869 rp = ACPI_NEXT_RESOURCE(rp); 2870 } 2871 2872 /* 2873 * Check the size of the buffer and expand if required. 2874 * 2875 * Required size is: 2876 * size of existing resources before terminator + 2877 * size of new resource and header + 2878 * size of terminator. 2879 * 2880 * Note that this loop should really only run once, unless 2881 * for some reason we are stuffing a *really* huge resource. 2882 */ 2883 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) + 2884 res->Length + ACPI_RS_SIZE_NO_DATA + 2885 ACPI_RS_SIZE_MIN) >= buf->Length) { 2886 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL) 2887 return (AE_NO_MEMORY); 2888 bcopy(buf->Pointer, newp, buf->Length); 2889 rp = (ACPI_RESOURCE *)((u_int8_t *)newp + 2890 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer)); 2891 AcpiOsFree(buf->Pointer); 2892 buf->Pointer = newp; 2893 buf->Length += buf->Length; 2894 } 2895 2896 /* Insert the new resource. */ 2897 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA); 2898 2899 /* And add the terminator. */ 2900 rp = ACPI_NEXT_RESOURCE(rp); 2901 rp->Type = ACPI_RESOURCE_TYPE_END_TAG; 2902 rp->Length = ACPI_RS_SIZE_MIN; 2903 2904 return (AE_OK); 2905 } 2906 2907 UINT64 2908 acpi_DSMQuery(ACPI_HANDLE h, const uint8_t *uuid, int revision) 2909 { 2910 /* 2911 * ACPI spec 9.1.1 defines this. 2912 * 2913 * "Arg2: Function Index Represents a specific function whose meaning is 2914 * specific to the UUID and Revision ID. Function indices should start 2915 * with 1. Function number zero is a query function (see the special 2916 * return code defined below)." 2917 */ 2918 ACPI_BUFFER buf; 2919 ACPI_OBJECT *obj; 2920 UINT64 ret = 0; 2921 int i; 2922 2923 if (!ACPI_SUCCESS(acpi_EvaluateDSM(h, uuid, revision, 0, NULL, &buf))) { 2924 ACPI_INFO(("Failed to enumerate DSM functions\n")); 2925 return (0); 2926 } 2927 2928 obj = (ACPI_OBJECT *)buf.Pointer; 2929 KASSERT(obj, ("Object not allowed to be NULL\n")); 2930 2931 /* 2932 * From ACPI 6.2 spec 9.1.1: 2933 * If Function Index = 0, a Buffer containing a function index bitfield. 2934 * Otherwise, the return value and type depends on the UUID and revision 2935 * ID (see below). 2936 */ 2937 switch (obj->Type) { 2938 case ACPI_TYPE_BUFFER: 2939 for (i = 0; i < MIN(obj->Buffer.Length, sizeof(ret)); i++) 2940 ret |= (((uint64_t)obj->Buffer.Pointer[i]) << (i * 8)); 2941 break; 2942 case ACPI_TYPE_INTEGER: 2943 ACPI_BIOS_WARNING((AE_INFO, 2944 "Possibly buggy BIOS with ACPI_TYPE_INTEGER for function enumeration\n")); 2945 ret = obj->Integer.Value; 2946 break; 2947 default: 2948 ACPI_WARNING((AE_INFO, "Unexpected return type %u\n", obj->Type)); 2949 }; 2950 2951 AcpiOsFree(obj); 2952 return ret; 2953 } 2954 2955 /* 2956 * DSM may return multiple types depending on the function. It is therefore 2957 * unsafe to use the typed evaluation. It is highly recommended that the caller 2958 * check the type of the returned object. 2959 */ 2960 ACPI_STATUS 2961 acpi_EvaluateDSM(ACPI_HANDLE handle, const uint8_t *uuid, int revision, 2962 UINT64 function, ACPI_OBJECT *package, ACPI_BUFFER *out_buf) 2963 { 2964 return (acpi_EvaluateDSMTyped(handle, uuid, revision, function, 2965 package, out_buf, ACPI_TYPE_ANY)); 2966 } 2967 2968 ACPI_STATUS 2969 acpi_EvaluateDSMTyped(ACPI_HANDLE handle, const uint8_t *uuid, int revision, 2970 UINT64 function, ACPI_OBJECT *package, ACPI_BUFFER *out_buf, 2971 ACPI_OBJECT_TYPE type) 2972 { 2973 ACPI_OBJECT arg[4]; 2974 ACPI_OBJECT_LIST arglist; 2975 ACPI_BUFFER buf; 2976 ACPI_STATUS status; 2977 2978 if (out_buf == NULL) 2979 return (AE_NO_MEMORY); 2980 2981 arg[0].Type = ACPI_TYPE_BUFFER; 2982 arg[0].Buffer.Length = ACPI_UUID_LENGTH; 2983 arg[0].Buffer.Pointer = __DECONST(uint8_t *, uuid); 2984 arg[1].Type = ACPI_TYPE_INTEGER; 2985 arg[1].Integer.Value = revision; 2986 arg[2].Type = ACPI_TYPE_INTEGER; 2987 arg[2].Integer.Value = function; 2988 if (package) { 2989 arg[3] = *package; 2990 } else { 2991 arg[3].Type = ACPI_TYPE_PACKAGE; 2992 arg[3].Package.Count = 0; 2993 arg[3].Package.Elements = NULL; 2994 } 2995 2996 arglist.Pointer = arg; 2997 arglist.Count = 4; 2998 buf.Pointer = NULL; 2999 buf.Length = ACPI_ALLOCATE_BUFFER; 3000 status = AcpiEvaluateObjectTyped(handle, "_DSM", &arglist, &buf, type); 3001 if (ACPI_FAILURE(status)) 3002 return (status); 3003 3004 KASSERT(ACPI_SUCCESS(status), ("Unexpected status")); 3005 3006 *out_buf = buf; 3007 return (status); 3008 } 3009 3010 ACPI_STATUS 3011 acpi_EvaluateOSC(ACPI_HANDLE handle, uint8_t *uuid, int revision, int count, 3012 uint32_t *caps_in, uint32_t *caps_out, bool query) 3013 { 3014 ACPI_OBJECT arg[4], *ret; 3015 ACPI_OBJECT_LIST arglist; 3016 ACPI_BUFFER buf; 3017 ACPI_STATUS status; 3018 3019 arglist.Pointer = arg; 3020 arglist.Count = 4; 3021 arg[0].Type = ACPI_TYPE_BUFFER; 3022 arg[0].Buffer.Length = ACPI_UUID_LENGTH; 3023 arg[0].Buffer.Pointer = uuid; 3024 arg[1].Type = ACPI_TYPE_INTEGER; 3025 arg[1].Integer.Value = revision; 3026 arg[2].Type = ACPI_TYPE_INTEGER; 3027 arg[2].Integer.Value = count; 3028 arg[3].Type = ACPI_TYPE_BUFFER; 3029 arg[3].Buffer.Length = count * sizeof(*caps_in); 3030 arg[3].Buffer.Pointer = (uint8_t *)caps_in; 3031 caps_in[0] = query ? 1 : 0; 3032 buf.Pointer = NULL; 3033 buf.Length = ACPI_ALLOCATE_BUFFER; 3034 status = AcpiEvaluateObjectTyped(handle, "_OSC", &arglist, &buf, 3035 ACPI_TYPE_BUFFER); 3036 if (ACPI_FAILURE(status)) 3037 return (status); 3038 if (caps_out != NULL) { 3039 ret = buf.Pointer; 3040 if (ret->Buffer.Length != count * sizeof(*caps_out)) { 3041 AcpiOsFree(buf.Pointer); 3042 return (AE_BUFFER_OVERFLOW); 3043 } 3044 bcopy(ret->Buffer.Pointer, caps_out, ret->Buffer.Length); 3045 } 3046 AcpiOsFree(buf.Pointer); 3047 return (status); 3048 } 3049 3050 /* 3051 * Set interrupt model. 3052 */ 3053 ACPI_STATUS 3054 acpi_SetIntrModel(int model) 3055 { 3056 3057 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model)); 3058 } 3059 3060 /* 3061 * Walk subtables of a table and call a callback routine for each 3062 * subtable. The caller should provide the first subtable and a 3063 * pointer to the end of the table. This can be used to walk tables 3064 * such as MADT and SRAT that use subtable entries. 3065 */ 3066 void 3067 acpi_walk_subtables(void *first, void *end, acpi_subtable_handler *handler, 3068 void *arg) 3069 { 3070 ACPI_SUBTABLE_HEADER *entry; 3071 3072 for (entry = first; (void *)entry < end; ) { 3073 /* Avoid an infinite loop if we hit a bogus entry. */ 3074 if (entry->Length < sizeof(ACPI_SUBTABLE_HEADER)) 3075 return; 3076 3077 handler(entry, arg); 3078 entry = ACPI_ADD_PTR(ACPI_SUBTABLE_HEADER, entry, entry->Length); 3079 } 3080 } 3081 3082 /* 3083 * DEPRECATED. This interface has serious deficiencies and will be 3084 * removed. 3085 * 3086 * Immediately enter the sleep state. In the old model, acpiconf(8) ran 3087 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this. 3088 */ 3089 ACPI_STATUS 3090 acpi_SetSleepState(struct acpi_softc *sc, int state) 3091 { 3092 static int once; 3093 3094 if (!once) { 3095 device_printf(sc->acpi_dev, 3096 "warning: acpi_SetSleepState() deprecated, need to update your software\n"); 3097 once = 1; 3098 } 3099 return (acpi_EnterSleepState(sc, state)); 3100 } 3101 3102 #if defined(__amd64__) || defined(__i386__) 3103 static void 3104 acpi_sleep_force_task(void *context) 3105 { 3106 struct acpi_softc *sc = (struct acpi_softc *)context; 3107 3108 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) 3109 device_printf(sc->acpi_dev, "force sleep state S%d failed\n", 3110 sc->acpi_next_sstate); 3111 } 3112 3113 static void 3114 acpi_sleep_force(void *arg) 3115 { 3116 struct acpi_softc *sc = (struct acpi_softc *)arg; 3117 3118 device_printf(sc->acpi_dev, 3119 "suspend request timed out, forcing sleep now\n"); 3120 /* 3121 * XXX Suspending from callout causes freezes in DEVICE_SUSPEND(). 3122 * Suspend from acpi_task thread instead. 3123 */ 3124 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3125 acpi_sleep_force_task, sc))) 3126 device_printf(sc->acpi_dev, "AcpiOsExecute() for sleeping failed\n"); 3127 } 3128 #endif 3129 3130 /* 3131 * Request that the system enter the given suspend state. All /dev/apm 3132 * devices and devd(8) will be notified. Userland then has a chance to 3133 * save state and acknowledge the request. The system sleeps once all 3134 * acks are in. 3135 */ 3136 int 3137 acpi_ReqSleepState(struct acpi_softc *sc, int state) 3138 { 3139 #if defined(__amd64__) || defined(__i386__) 3140 struct apm_clone_data *clone; 3141 ACPI_STATUS status; 3142 3143 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX) 3144 return (EINVAL); 3145 if (!acpi_sleep_states[state]) 3146 return (EOPNOTSUPP); 3147 3148 /* 3149 * If a reboot/shutdown/suspend request is already in progress or 3150 * suspend is blocked due to an upcoming shutdown, just return. 3151 */ 3152 if (rebooting || sc->acpi_next_sstate != 0 || suspend_blocked) { 3153 return (0); 3154 } 3155 3156 /* Wait until sleep is enabled. */ 3157 while (sc->acpi_sleep_disabled) { 3158 AcpiOsSleep(1000); 3159 } 3160 3161 ACPI_LOCK(acpi); 3162 3163 sc->acpi_next_sstate = state; 3164 3165 /* S5 (soft-off) should be entered directly with no waiting. */ 3166 if (state == ACPI_STATE_S5) { 3167 ACPI_UNLOCK(acpi); 3168 status = acpi_EnterSleepState(sc, state); 3169 return (ACPI_SUCCESS(status) ? 0 : ENXIO); 3170 } 3171 3172 /* Record the pending state and notify all apm devices. */ 3173 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) { 3174 clone->notify_status = APM_EV_NONE; 3175 if ((clone->flags & ACPI_EVF_DEVD) == 0) { 3176 selwakeuppri(&clone->sel_read, PZERO); 3177 KNOTE_LOCKED(&clone->sel_read.si_note, 0); 3178 } 3179 } 3180 3181 /* If devd(8) is not running, immediately enter the sleep state. */ 3182 if (!devctl_process_running()) { 3183 ACPI_UNLOCK(acpi); 3184 status = acpi_EnterSleepState(sc, state); 3185 return (ACPI_SUCCESS(status) ? 0 : ENXIO); 3186 } 3187 3188 /* 3189 * Set a timeout to fire if userland doesn't ack the suspend request 3190 * in time. This way we still eventually go to sleep if we were 3191 * overheating or running low on battery, even if userland is hung. 3192 * We cancel this timeout once all userland acks are in or the 3193 * suspend request is aborted. 3194 */ 3195 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc); 3196 ACPI_UNLOCK(acpi); 3197 3198 /* Now notify devd(8) also. */ 3199 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state); 3200 3201 return (0); 3202 #else 3203 /* This platform does not support acpi suspend/resume. */ 3204 return (EOPNOTSUPP); 3205 #endif 3206 } 3207 3208 /* 3209 * Acknowledge (or reject) a pending sleep state. The caller has 3210 * prepared for suspend and is now ready for it to proceed. If the 3211 * error argument is non-zero, it indicates suspend should be cancelled 3212 * and gives an errno value describing why. Once all votes are in, 3213 * we suspend the system. 3214 */ 3215 int 3216 acpi_AckSleepState(struct apm_clone_data *clone, int error) 3217 { 3218 #if defined(__amd64__) || defined(__i386__) 3219 struct acpi_softc *sc; 3220 int ret, sleeping; 3221 3222 /* If no pending sleep state, return an error. */ 3223 ACPI_LOCK(acpi); 3224 sc = clone->acpi_sc; 3225 if (sc->acpi_next_sstate == 0) { 3226 ACPI_UNLOCK(acpi); 3227 return (ENXIO); 3228 } 3229 3230 /* Caller wants to abort suspend process. */ 3231 if (error) { 3232 sc->acpi_next_sstate = 0; 3233 callout_stop(&sc->susp_force_to); 3234 device_printf(sc->acpi_dev, 3235 "listener on %s cancelled the pending suspend\n", 3236 devtoname(clone->cdev)); 3237 ACPI_UNLOCK(acpi); 3238 return (0); 3239 } 3240 3241 /* 3242 * Mark this device as acking the suspend request. Then, walk through 3243 * all devices, seeing if they agree yet. We only count devices that 3244 * are writable since read-only devices couldn't ack the request. 3245 */ 3246 sleeping = TRUE; 3247 clone->notify_status = APM_EV_ACKED; 3248 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) { 3249 if ((clone->flags & ACPI_EVF_WRITE) != 0 && 3250 clone->notify_status != APM_EV_ACKED) { 3251 sleeping = FALSE; 3252 break; 3253 } 3254 } 3255 3256 /* If all devices have voted "yes", we will suspend now. */ 3257 if (sleeping) 3258 callout_stop(&sc->susp_force_to); 3259 ACPI_UNLOCK(acpi); 3260 ret = 0; 3261 if (sleeping) { 3262 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) 3263 ret = ENODEV; 3264 } 3265 return (ret); 3266 #else 3267 /* This platform does not support acpi suspend/resume. */ 3268 return (EOPNOTSUPP); 3269 #endif 3270 } 3271 3272 static void 3273 acpi_sleep_enable(void *arg) 3274 { 3275 struct acpi_softc *sc = (struct acpi_softc *)arg; 3276 3277 ACPI_LOCK_ASSERT(acpi); 3278 3279 /* Reschedule if the system is not fully up and running. */ 3280 if (!AcpiGbl_SystemAwakeAndRunning) { 3281 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME); 3282 return; 3283 } 3284 3285 sc->acpi_sleep_disabled = FALSE; 3286 } 3287 3288 static ACPI_STATUS 3289 acpi_sleep_disable(struct acpi_softc *sc) 3290 { 3291 ACPI_STATUS status; 3292 3293 /* Fail if the system is not fully up and running. */ 3294 if (!AcpiGbl_SystemAwakeAndRunning) 3295 return (AE_ERROR); 3296 3297 ACPI_LOCK(acpi); 3298 status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK; 3299 sc->acpi_sleep_disabled = TRUE; 3300 ACPI_UNLOCK(acpi); 3301 3302 return (status); 3303 } 3304 3305 enum acpi_sleep_state { 3306 ACPI_SS_NONE, 3307 ACPI_SS_GPE_SET, 3308 ACPI_SS_DEV_SUSPEND, 3309 ACPI_SS_SLP_PREP, 3310 ACPI_SS_SLEPT, 3311 }; 3312 3313 /* 3314 * Enter the desired system sleep state. 3315 * 3316 * Currently we support S1-S5 but S4 is only S4BIOS 3317 */ 3318 static ACPI_STATUS 3319 acpi_EnterSleepState(struct acpi_softc *sc, int state) 3320 { 3321 register_t intr; 3322 ACPI_STATUS status; 3323 ACPI_EVENT_STATUS power_button_status; 3324 enum acpi_sleep_state slp_state; 3325 int sleep_result; 3326 3327 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 3328 3329 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX) 3330 return_ACPI_STATUS (AE_BAD_PARAMETER); 3331 if (!acpi_sleep_states[state]) { 3332 device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n", 3333 state); 3334 return (AE_SUPPORT); 3335 } 3336 3337 /* Re-entry once we're suspending is not allowed. */ 3338 status = acpi_sleep_disable(sc); 3339 if (ACPI_FAILURE(status)) { 3340 device_printf(sc->acpi_dev, 3341 "suspend request ignored (not ready yet)\n"); 3342 return (status); 3343 } 3344 3345 if (state == ACPI_STATE_S5) { 3346 /* 3347 * Shut down cleanly and power off. This will call us back through the 3348 * shutdown handlers. 3349 */ 3350 shutdown_nice(RB_POWEROFF); 3351 return_ACPI_STATUS (AE_OK); 3352 } 3353 3354 EVENTHANDLER_INVOKE(power_suspend_early); 3355 stop_all_proc(); 3356 suspend_all_fs(); 3357 EVENTHANDLER_INVOKE(power_suspend); 3358 3359 #ifdef EARLY_AP_STARTUP 3360 MPASS(mp_ncpus == 1 || smp_started); 3361 thread_lock(curthread); 3362 sched_bind(curthread, 0); 3363 thread_unlock(curthread); 3364 #else 3365 if (smp_started) { 3366 thread_lock(curthread); 3367 sched_bind(curthread, 0); 3368 thread_unlock(curthread); 3369 } 3370 #endif 3371 3372 /* 3373 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME 3374 */ 3375 bus_topo_lock(); 3376 3377 slp_state = ACPI_SS_NONE; 3378 3379 sc->acpi_sstate = state; 3380 3381 /* Enable any GPEs as appropriate and requested by the user. */ 3382 acpi_wake_prep_walk(state); 3383 slp_state = ACPI_SS_GPE_SET; 3384 3385 /* 3386 * Inform all devices that we are going to sleep. If at least one 3387 * device fails, DEVICE_SUSPEND() automatically resumes the tree. 3388 * 3389 * XXX Note that a better two-pass approach with a 'veto' pass 3390 * followed by a "real thing" pass would be better, but the current 3391 * bus interface does not provide for this. 3392 */ 3393 if (DEVICE_SUSPEND(root_bus) != 0) { 3394 device_printf(sc->acpi_dev, "device_suspend failed\n"); 3395 goto backout; 3396 } 3397 slp_state = ACPI_SS_DEV_SUSPEND; 3398 3399 status = AcpiEnterSleepStatePrep(state); 3400 if (ACPI_FAILURE(status)) { 3401 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 3402 AcpiFormatException(status)); 3403 goto backout; 3404 } 3405 slp_state = ACPI_SS_SLP_PREP; 3406 3407 if (sc->acpi_sleep_delay > 0) 3408 DELAY(sc->acpi_sleep_delay * 1000000); 3409 3410 suspendclock(); 3411 intr = intr_disable(); 3412 if (state != ACPI_STATE_S1) { 3413 sleep_result = acpi_sleep_machdep(sc, state); 3414 acpi_wakeup_machdep(sc, state, sleep_result, 0); 3415 3416 /* 3417 * XXX According to ACPI specification SCI_EN bit should be restored 3418 * by ACPI platform (BIOS, firmware) to its pre-sleep state. 3419 * Unfortunately some BIOSes fail to do that and that leads to 3420 * unexpected and serious consequences during wake up like a system 3421 * getting stuck in SMI handlers. 3422 * This hack is picked up from Linux, which claims that it follows 3423 * Windows behavior. 3424 */ 3425 if (sleep_result == 1 && state != ACPI_STATE_S4) 3426 AcpiWriteBitRegister(ACPI_BITREG_SCI_ENABLE, ACPI_ENABLE_EVENT); 3427 3428 if (sleep_result == 1 && state == ACPI_STATE_S3) { 3429 /* 3430 * Prevent mis-interpretation of the wakeup by power button 3431 * as a request for power off. 3432 * Ideally we should post an appropriate wakeup event, 3433 * perhaps using acpi_event_power_button_wake or alike. 3434 * 3435 * Clearing of power button status after wakeup is mandated 3436 * by ACPI specification in section "Fixed Power Button". 3437 * 3438 * XXX As of ACPICA 20121114 AcpiGetEventStatus provides 3439 * status as 0/1 corressponding to inactive/active despite 3440 * its type being ACPI_EVENT_STATUS. In other words, 3441 * we should not test for ACPI_EVENT_FLAG_SET for time being. 3442 */ 3443 if (ACPI_SUCCESS(AcpiGetEventStatus(ACPI_EVENT_POWER_BUTTON, 3444 &power_button_status)) && power_button_status != 0) { 3445 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 3446 device_printf(sc->acpi_dev, 3447 "cleared fixed power button status\n"); 3448 } 3449 } 3450 3451 intr_restore(intr); 3452 3453 /* call acpi_wakeup_machdep() again with interrupt enabled */ 3454 acpi_wakeup_machdep(sc, state, sleep_result, 1); 3455 3456 AcpiLeaveSleepStatePrep(state); 3457 3458 if (sleep_result == -1) 3459 goto backout; 3460 3461 /* Re-enable ACPI hardware on wakeup from sleep state 4. */ 3462 if (state == ACPI_STATE_S4) 3463 AcpiEnable(); 3464 } else { 3465 status = AcpiEnterSleepState(state); 3466 intr_restore(intr); 3467 AcpiLeaveSleepStatePrep(state); 3468 if (ACPI_FAILURE(status)) { 3469 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", 3470 AcpiFormatException(status)); 3471 goto backout; 3472 } 3473 } 3474 slp_state = ACPI_SS_SLEPT; 3475 3476 /* 3477 * Back out state according to how far along we got in the suspend 3478 * process. This handles both the error and success cases. 3479 */ 3480 backout: 3481 if (slp_state >= ACPI_SS_SLP_PREP) 3482 resumeclock(); 3483 if (slp_state >= ACPI_SS_GPE_SET) { 3484 acpi_wake_prep_walk(state); 3485 sc->acpi_sstate = ACPI_STATE_S0; 3486 } 3487 if (slp_state >= ACPI_SS_DEV_SUSPEND) 3488 DEVICE_RESUME(root_bus); 3489 if (slp_state >= ACPI_SS_SLP_PREP) 3490 AcpiLeaveSleepState(state); 3491 if (slp_state >= ACPI_SS_SLEPT) { 3492 #if defined(__i386__) || defined(__amd64__) 3493 /* NB: we are still using ACPI timecounter at this point. */ 3494 resume_TSC(); 3495 #endif 3496 acpi_resync_clock(sc); 3497 acpi_enable_fixed_events(sc); 3498 } 3499 sc->acpi_next_sstate = 0; 3500 3501 bus_topo_unlock(); 3502 3503 #ifdef EARLY_AP_STARTUP 3504 thread_lock(curthread); 3505 sched_unbind(curthread); 3506 thread_unlock(curthread); 3507 #else 3508 if (smp_started) { 3509 thread_lock(curthread); 3510 sched_unbind(curthread); 3511 thread_unlock(curthread); 3512 } 3513 #endif 3514 3515 resume_all_fs(); 3516 resume_all_proc(); 3517 3518 EVENTHANDLER_INVOKE(power_resume); 3519 3520 /* Allow another sleep request after a while. */ 3521 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME); 3522 3523 /* Run /etc/rc.resume after we are back. */ 3524 if (devctl_process_running()) 3525 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state); 3526 3527 return_ACPI_STATUS (status); 3528 } 3529 3530 static void 3531 acpi_resync_clock(struct acpi_softc *sc) 3532 { 3533 3534 /* 3535 * Warm up timecounter again and reset system clock. 3536 */ 3537 (void)timecounter->tc_get_timecount(timecounter); 3538 inittodr(time_second + sc->acpi_sleep_delay); 3539 } 3540 3541 /* Enable or disable the device's wake GPE. */ 3542 int 3543 acpi_wake_set_enable(device_t dev, int enable) 3544 { 3545 struct acpi_prw_data prw; 3546 ACPI_STATUS status; 3547 int flags; 3548 3549 /* Make sure the device supports waking the system and get the GPE. */ 3550 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0) 3551 return (ENXIO); 3552 3553 flags = acpi_get_flags(dev); 3554 if (enable) { 3555 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, 3556 ACPI_GPE_ENABLE); 3557 if (ACPI_FAILURE(status)) { 3558 device_printf(dev, "enable wake failed\n"); 3559 return (ENXIO); 3560 } 3561 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED); 3562 } else { 3563 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, 3564 ACPI_GPE_DISABLE); 3565 if (ACPI_FAILURE(status)) { 3566 device_printf(dev, "disable wake failed\n"); 3567 return (ENXIO); 3568 } 3569 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED); 3570 } 3571 3572 return (0); 3573 } 3574 3575 static int 3576 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate) 3577 { 3578 struct acpi_prw_data prw; 3579 device_t dev; 3580 3581 /* Check that this is a wake-capable device and get its GPE. */ 3582 if (acpi_parse_prw(handle, &prw) != 0) 3583 return (ENXIO); 3584 dev = acpi_get_device(handle); 3585 3586 /* 3587 * The destination sleep state must be less than (i.e., higher power) 3588 * or equal to the value specified by _PRW. If this GPE cannot be 3589 * enabled for the next sleep state, then disable it. If it can and 3590 * the user requested it be enabled, turn on any required power resources 3591 * and set _PSW. 3592 */ 3593 if (sstate > prw.lowest_wake) { 3594 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE); 3595 if (bootverbose) 3596 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n", 3597 acpi_name(handle), sstate); 3598 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) { 3599 acpi_pwr_wake_enable(handle, 1); 3600 acpi_SetInteger(handle, "_PSW", 1); 3601 if (bootverbose) 3602 device_printf(dev, "wake_prep enabled for %s (S%d)\n", 3603 acpi_name(handle), sstate); 3604 } 3605 3606 return (0); 3607 } 3608 3609 static int 3610 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate) 3611 { 3612 struct acpi_prw_data prw; 3613 device_t dev; 3614 3615 /* 3616 * Check that this is a wake-capable device and get its GPE. Return 3617 * now if the user didn't enable this device for wake. 3618 */ 3619 if (acpi_parse_prw(handle, &prw) != 0) 3620 return (ENXIO); 3621 dev = acpi_get_device(handle); 3622 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0) 3623 return (0); 3624 3625 /* 3626 * If this GPE couldn't be enabled for the previous sleep state, it was 3627 * disabled before going to sleep so re-enable it. If it was enabled, 3628 * clear _PSW and turn off any power resources it used. 3629 */ 3630 if (sstate > prw.lowest_wake) { 3631 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE); 3632 if (bootverbose) 3633 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle)); 3634 } else { 3635 acpi_SetInteger(handle, "_PSW", 0); 3636 acpi_pwr_wake_enable(handle, 0); 3637 if (bootverbose) 3638 device_printf(dev, "run_prep cleaned up for %s\n", 3639 acpi_name(handle)); 3640 } 3641 3642 return (0); 3643 } 3644 3645 static ACPI_STATUS 3646 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 3647 { 3648 int sstate; 3649 3650 /* If suspending, run the sleep prep function, otherwise wake. */ 3651 sstate = *(int *)context; 3652 if (AcpiGbl_SystemAwakeAndRunning) 3653 acpi_wake_sleep_prep(handle, sstate); 3654 else 3655 acpi_wake_run_prep(handle, sstate); 3656 return (AE_OK); 3657 } 3658 3659 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */ 3660 static int 3661 acpi_wake_prep_walk(int sstate) 3662 { 3663 ACPI_HANDLE sb_handle; 3664 3665 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) 3666 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100, 3667 acpi_wake_prep, NULL, &sstate, NULL); 3668 return (0); 3669 } 3670 3671 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */ 3672 static int 3673 acpi_wake_sysctl_walk(device_t dev) 3674 { 3675 int error, i, numdevs; 3676 device_t *devlist; 3677 device_t child; 3678 ACPI_STATUS status; 3679 3680 error = device_get_children(dev, &devlist, &numdevs); 3681 if (error != 0 || numdevs == 0) { 3682 if (numdevs == 0) 3683 free(devlist, M_TEMP); 3684 return (error); 3685 } 3686 for (i = 0; i < numdevs; i++) { 3687 child = devlist[i]; 3688 acpi_wake_sysctl_walk(child); 3689 if (!device_is_attached(child)) 3690 continue; 3691 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL); 3692 if (ACPI_SUCCESS(status)) { 3693 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child), 3694 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO, 3695 "wake", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, child, 0, 3696 acpi_wake_set_sysctl, "I", "Device set to wake the system"); 3697 } 3698 } 3699 free(devlist, M_TEMP); 3700 3701 return (0); 3702 } 3703 3704 /* Enable or disable wake from userland. */ 3705 static int 3706 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS) 3707 { 3708 int enable, error; 3709 device_t dev; 3710 3711 dev = (device_t)arg1; 3712 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0; 3713 3714 error = sysctl_handle_int(oidp, &enable, 0, req); 3715 if (error != 0 || req->newptr == NULL) 3716 return (error); 3717 if (enable != 0 && enable != 1) 3718 return (EINVAL); 3719 3720 return (acpi_wake_set_enable(dev, enable)); 3721 } 3722 3723 /* Parse a device's _PRW into a structure. */ 3724 int 3725 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw) 3726 { 3727 ACPI_STATUS status; 3728 ACPI_BUFFER prw_buffer; 3729 ACPI_OBJECT *res, *res2; 3730 int error, i, power_count; 3731 3732 if (h == NULL || prw == NULL) 3733 return (EINVAL); 3734 3735 /* 3736 * The _PRW object (7.2.9) is only required for devices that have the 3737 * ability to wake the system from a sleeping state. 3738 */ 3739 error = EINVAL; 3740 prw_buffer.Pointer = NULL; 3741 prw_buffer.Length = ACPI_ALLOCATE_BUFFER; 3742 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer); 3743 if (ACPI_FAILURE(status)) 3744 return (ENOENT); 3745 res = (ACPI_OBJECT *)prw_buffer.Pointer; 3746 if (res == NULL) 3747 return (ENOENT); 3748 if (!ACPI_PKG_VALID(res, 2)) 3749 goto out; 3750 3751 /* 3752 * Element 1 of the _PRW object: 3753 * The lowest power system sleeping state that can be entered while still 3754 * providing wake functionality. The sleeping state being entered must 3755 * be less than (i.e., higher power) or equal to this value. 3756 */ 3757 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0) 3758 goto out; 3759 3760 /* 3761 * Element 0 of the _PRW object: 3762 */ 3763 switch (res->Package.Elements[0].Type) { 3764 case ACPI_TYPE_INTEGER: 3765 /* 3766 * If the data type of this package element is numeric, then this 3767 * _PRW package element is the bit index in the GPEx_EN, in the 3768 * GPE blocks described in the FADT, of the enable bit that is 3769 * enabled for the wake event. 3770 */ 3771 prw->gpe_handle = NULL; 3772 prw->gpe_bit = res->Package.Elements[0].Integer.Value; 3773 error = 0; 3774 break; 3775 case ACPI_TYPE_PACKAGE: 3776 /* 3777 * If the data type of this package element is a package, then this 3778 * _PRW package element is itself a package containing two 3779 * elements. The first is an object reference to the GPE Block 3780 * device that contains the GPE that will be triggered by the wake 3781 * event. The second element is numeric and it contains the bit 3782 * index in the GPEx_EN, in the GPE Block referenced by the 3783 * first element in the package, of the enable bit that is enabled for 3784 * the wake event. 3785 * 3786 * For example, if this field is a package then it is of the form: 3787 * Package() {\_SB.PCI0.ISA.GPE, 2} 3788 */ 3789 res2 = &res->Package.Elements[0]; 3790 if (!ACPI_PKG_VALID(res2, 2)) 3791 goto out; 3792 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]); 3793 if (prw->gpe_handle == NULL) 3794 goto out; 3795 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0) 3796 goto out; 3797 error = 0; 3798 break; 3799 default: 3800 goto out; 3801 } 3802 3803 /* Elements 2 to N of the _PRW object are power resources. */ 3804 power_count = res->Package.Count - 2; 3805 if (power_count > ACPI_PRW_MAX_POWERRES) { 3806 printf("ACPI device %s has too many power resources\n", acpi_name(h)); 3807 power_count = 0; 3808 } 3809 prw->power_res_count = power_count; 3810 for (i = 0; i < power_count; i++) 3811 prw->power_res[i] = res->Package.Elements[i]; 3812 3813 out: 3814 if (prw_buffer.Pointer != NULL) 3815 AcpiOsFree(prw_buffer.Pointer); 3816 return (error); 3817 } 3818 3819 /* 3820 * ACPI Event Handlers 3821 */ 3822 3823 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */ 3824 3825 static void 3826 acpi_system_eventhandler_sleep(void *arg, int state) 3827 { 3828 struct acpi_softc *sc = (struct acpi_softc *)arg; 3829 int ret; 3830 3831 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 3832 3833 /* Check if button action is disabled or unknown. */ 3834 if (state == ACPI_STATE_UNKNOWN) 3835 return; 3836 3837 /* Request that the system prepare to enter the given suspend state. */ 3838 ret = acpi_ReqSleepState(sc, state); 3839 if (ret != 0) 3840 device_printf(sc->acpi_dev, 3841 "request to enter state S%d failed (err %d)\n", state, ret); 3842 3843 return_VOID; 3844 } 3845 3846 static void 3847 acpi_system_eventhandler_wakeup(void *arg, int state) 3848 { 3849 3850 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 3851 3852 /* Currently, nothing to do for wakeup. */ 3853 3854 return_VOID; 3855 } 3856 3857 /* 3858 * ACPICA Event Handlers (FixedEvent, also called from button notify handler) 3859 */ 3860 static void 3861 acpi_invoke_sleep_eventhandler(void *context) 3862 { 3863 3864 EVENTHANDLER_INVOKE(acpi_sleep_event, *(int *)context); 3865 } 3866 3867 static void 3868 acpi_invoke_wake_eventhandler(void *context) 3869 { 3870 3871 EVENTHANDLER_INVOKE(acpi_wakeup_event, *(int *)context); 3872 } 3873 3874 UINT32 3875 acpi_event_power_button_sleep(void *context) 3876 { 3877 struct acpi_softc *sc = (struct acpi_softc *)context; 3878 3879 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3880 3881 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3882 acpi_invoke_sleep_eventhandler, &sc->acpi_power_button_sx))) 3883 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3884 return_VALUE (ACPI_INTERRUPT_HANDLED); 3885 } 3886 3887 UINT32 3888 acpi_event_power_button_wake(void *context) 3889 { 3890 struct acpi_softc *sc = (struct acpi_softc *)context; 3891 3892 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3893 3894 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3895 acpi_invoke_wake_eventhandler, &sc->acpi_power_button_sx))) 3896 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3897 return_VALUE (ACPI_INTERRUPT_HANDLED); 3898 } 3899 3900 UINT32 3901 acpi_event_sleep_button_sleep(void *context) 3902 { 3903 struct acpi_softc *sc = (struct acpi_softc *)context; 3904 3905 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3906 3907 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3908 acpi_invoke_sleep_eventhandler, &sc->acpi_sleep_button_sx))) 3909 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3910 return_VALUE (ACPI_INTERRUPT_HANDLED); 3911 } 3912 3913 UINT32 3914 acpi_event_sleep_button_wake(void *context) 3915 { 3916 struct acpi_softc *sc = (struct acpi_softc *)context; 3917 3918 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3919 3920 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER, 3921 acpi_invoke_wake_eventhandler, &sc->acpi_sleep_button_sx))) 3922 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED); 3923 return_VALUE (ACPI_INTERRUPT_HANDLED); 3924 } 3925 3926 /* 3927 * XXX This static buffer is suboptimal. There is no locking so only 3928 * use this for single-threaded callers. 3929 */ 3930 char * 3931 acpi_name(ACPI_HANDLE handle) 3932 { 3933 ACPI_BUFFER buf; 3934 static char data[256]; 3935 3936 buf.Length = sizeof(data); 3937 buf.Pointer = data; 3938 3939 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf))) 3940 return (data); 3941 return ("(unknown)"); 3942 } 3943 3944 /* 3945 * Debugging/bug-avoidance. Avoid trying to fetch info on various 3946 * parts of the namespace. 3947 */ 3948 int 3949 acpi_avoid(ACPI_HANDLE handle) 3950 { 3951 char *cp, *env, *np; 3952 int len; 3953 3954 np = acpi_name(handle); 3955 if (*np == '\\') 3956 np++; 3957 if ((env = kern_getenv("debug.acpi.avoid")) == NULL) 3958 return (0); 3959 3960 /* Scan the avoid list checking for a match */ 3961 cp = env; 3962 for (;;) { 3963 while (*cp != 0 && isspace(*cp)) 3964 cp++; 3965 if (*cp == 0) 3966 break; 3967 len = 0; 3968 while (cp[len] != 0 && !isspace(cp[len])) 3969 len++; 3970 if (!strncmp(cp, np, len)) { 3971 freeenv(env); 3972 return(1); 3973 } 3974 cp += len; 3975 } 3976 freeenv(env); 3977 3978 return (0); 3979 } 3980 3981 /* 3982 * Debugging/bug-avoidance. Disable ACPI subsystem components. 3983 */ 3984 int 3985 acpi_disabled(char *subsys) 3986 { 3987 char *cp, *env; 3988 int len; 3989 3990 if ((env = kern_getenv("debug.acpi.disabled")) == NULL) 3991 return (0); 3992 if (strcmp(env, "all") == 0) { 3993 freeenv(env); 3994 return (1); 3995 } 3996 3997 /* Scan the disable list, checking for a match. */ 3998 cp = env; 3999 for (;;) { 4000 while (*cp != '\0' && isspace(*cp)) 4001 cp++; 4002 if (*cp == '\0') 4003 break; 4004 len = 0; 4005 while (cp[len] != '\0' && !isspace(cp[len])) 4006 len++; 4007 if (strncmp(cp, subsys, len) == 0) { 4008 freeenv(env); 4009 return (1); 4010 } 4011 cp += len; 4012 } 4013 freeenv(env); 4014 4015 return (0); 4016 } 4017 4018 static void 4019 acpi_lookup(void *arg, const char *name, device_t *dev) 4020 { 4021 ACPI_HANDLE handle; 4022 4023 if (*dev != NULL) 4024 return; 4025 4026 /* 4027 * Allow any handle name that is specified as an absolute path and 4028 * starts with '\'. We could restrict this to \_SB and friends, 4029 * but see acpi_probe_children() for notes on why we scan the entire 4030 * namespace for devices. 4031 * 4032 * XXX: The pathname argument to AcpiGetHandle() should be fixed to 4033 * be const. 4034 */ 4035 if (name[0] != '\\') 4036 return; 4037 if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, __DECONST(char *, name), 4038 &handle))) 4039 return; 4040 *dev = acpi_get_device(handle); 4041 } 4042 4043 /* 4044 * Control interface. 4045 * 4046 * We multiplex ioctls for all participating ACPI devices here. Individual 4047 * drivers wanting to be accessible via /dev/acpi should use the 4048 * register/deregister interface to make their handlers visible. 4049 */ 4050 struct acpi_ioctl_hook 4051 { 4052 TAILQ_ENTRY(acpi_ioctl_hook) link; 4053 u_long cmd; 4054 acpi_ioctl_fn fn; 4055 void *arg; 4056 }; 4057 4058 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks; 4059 static int acpi_ioctl_hooks_initted; 4060 4061 int 4062 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg) 4063 { 4064 struct acpi_ioctl_hook *hp; 4065 4066 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL) 4067 return (ENOMEM); 4068 hp->cmd = cmd; 4069 hp->fn = fn; 4070 hp->arg = arg; 4071 4072 ACPI_LOCK(acpi); 4073 if (acpi_ioctl_hooks_initted == 0) { 4074 TAILQ_INIT(&acpi_ioctl_hooks); 4075 acpi_ioctl_hooks_initted = 1; 4076 } 4077 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link); 4078 ACPI_UNLOCK(acpi); 4079 4080 return (0); 4081 } 4082 4083 void 4084 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn) 4085 { 4086 struct acpi_ioctl_hook *hp; 4087 4088 ACPI_LOCK(acpi); 4089 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) 4090 if (hp->cmd == cmd && hp->fn == fn) 4091 break; 4092 4093 if (hp != NULL) { 4094 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link); 4095 free(hp, M_ACPIDEV); 4096 } 4097 ACPI_UNLOCK(acpi); 4098 } 4099 4100 static int 4101 acpiopen(struct cdev *dev, int flag, int fmt, struct thread *td) 4102 { 4103 return (0); 4104 } 4105 4106 static int 4107 acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td) 4108 { 4109 return (0); 4110 } 4111 4112 static int 4113 acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 4114 { 4115 struct acpi_softc *sc; 4116 struct acpi_ioctl_hook *hp; 4117 int error, state; 4118 4119 error = 0; 4120 hp = NULL; 4121 sc = dev->si_drv1; 4122 4123 /* 4124 * Scan the list of registered ioctls, looking for handlers. 4125 */ 4126 ACPI_LOCK(acpi); 4127 if (acpi_ioctl_hooks_initted) 4128 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) { 4129 if (hp->cmd == cmd) 4130 break; 4131 } 4132 ACPI_UNLOCK(acpi); 4133 if (hp) 4134 return (hp->fn(cmd, addr, hp->arg)); 4135 4136 /* 4137 * Core ioctls are not permitted for non-writable user. 4138 * Currently, other ioctls just fetch information. 4139 * Not changing system behavior. 4140 */ 4141 if ((flag & FWRITE) == 0) 4142 return (EPERM); 4143 4144 /* Core system ioctls. */ 4145 switch (cmd) { 4146 case ACPIIO_REQSLPSTATE: 4147 state = *(int *)addr; 4148 if (state != ACPI_STATE_S5) 4149 return (acpi_ReqSleepState(sc, state)); 4150 device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n"); 4151 error = EOPNOTSUPP; 4152 break; 4153 case ACPIIO_ACKSLPSTATE: 4154 error = *(int *)addr; 4155 error = acpi_AckSleepState(sc->acpi_clone, error); 4156 break; 4157 case ACPIIO_SETSLPSTATE: /* DEPRECATED */ 4158 state = *(int *)addr; 4159 if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX) 4160 return (EINVAL); 4161 if (!acpi_sleep_states[state]) 4162 return (EOPNOTSUPP); 4163 if (ACPI_FAILURE(acpi_SetSleepState(sc, state))) 4164 error = ENXIO; 4165 break; 4166 default: 4167 error = ENXIO; 4168 break; 4169 } 4170 4171 return (error); 4172 } 4173 4174 static int 4175 acpi_sname2sstate(const char *sname) 4176 { 4177 int sstate; 4178 4179 if (toupper(sname[0]) == 'S') { 4180 sstate = sname[1] - '0'; 4181 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 && 4182 sname[2] == '\0') 4183 return (sstate); 4184 } else if (strcasecmp(sname, "NONE") == 0) 4185 return (ACPI_STATE_UNKNOWN); 4186 return (-1); 4187 } 4188 4189 static const char * 4190 acpi_sstate2sname(int sstate) 4191 { 4192 static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" }; 4193 4194 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5) 4195 return (snames[sstate]); 4196 else if (sstate == ACPI_STATE_UNKNOWN) 4197 return ("NONE"); 4198 return (NULL); 4199 } 4200 4201 static int 4202 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 4203 { 4204 int error; 4205 struct sbuf sb; 4206 UINT8 state; 4207 4208 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND); 4209 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++) 4210 if (acpi_sleep_states[state]) 4211 sbuf_printf(&sb, "%s ", acpi_sstate2sname(state)); 4212 sbuf_trim(&sb); 4213 sbuf_finish(&sb); 4214 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req); 4215 sbuf_delete(&sb); 4216 return (error); 4217 } 4218 4219 static int 4220 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 4221 { 4222 char sleep_state[10]; 4223 int error, new_state, old_state; 4224 4225 old_state = *(int *)oidp->oid_arg1; 4226 strlcpy(sleep_state, acpi_sstate2sname(old_state), sizeof(sleep_state)); 4227 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req); 4228 if (error == 0 && req->newptr != NULL) { 4229 new_state = acpi_sname2sstate(sleep_state); 4230 if (new_state < ACPI_STATE_S1) 4231 return (EINVAL); 4232 if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state]) 4233 return (EOPNOTSUPP); 4234 if (new_state != old_state) 4235 *(int *)oidp->oid_arg1 = new_state; 4236 } 4237 return (error); 4238 } 4239 4240 /* Inform devctl(4) when we receive a Notify. */ 4241 void 4242 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify) 4243 { 4244 char notify_buf[16]; 4245 ACPI_BUFFER handle_buf; 4246 ACPI_STATUS status; 4247 4248 if (subsystem == NULL) 4249 return; 4250 4251 handle_buf.Pointer = NULL; 4252 handle_buf.Length = ACPI_ALLOCATE_BUFFER; 4253 status = AcpiNsHandleToPathname(h, &handle_buf, FALSE); 4254 if (ACPI_FAILURE(status)) 4255 return; 4256 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify); 4257 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf); 4258 AcpiOsFree(handle_buf.Pointer); 4259 } 4260 4261 #ifdef ACPI_DEBUG 4262 /* 4263 * Support for parsing debug options from the kernel environment. 4264 * 4265 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers 4266 * by specifying the names of the bits in the debug.acpi.layer and 4267 * debug.acpi.level environment variables. Bits may be unset by 4268 * prefixing the bit name with !. 4269 */ 4270 struct debugtag 4271 { 4272 char *name; 4273 UINT32 value; 4274 }; 4275 4276 static struct debugtag dbg_layer[] = { 4277 {"ACPI_UTILITIES", ACPI_UTILITIES}, 4278 {"ACPI_HARDWARE", ACPI_HARDWARE}, 4279 {"ACPI_EVENTS", ACPI_EVENTS}, 4280 {"ACPI_TABLES", ACPI_TABLES}, 4281 {"ACPI_NAMESPACE", ACPI_NAMESPACE}, 4282 {"ACPI_PARSER", ACPI_PARSER}, 4283 {"ACPI_DISPATCHER", ACPI_DISPATCHER}, 4284 {"ACPI_EXECUTER", ACPI_EXECUTER}, 4285 {"ACPI_RESOURCES", ACPI_RESOURCES}, 4286 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER}, 4287 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES}, 4288 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER}, 4289 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS}, 4290 4291 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER}, 4292 {"ACPI_BATTERY", ACPI_BATTERY}, 4293 {"ACPI_BUS", ACPI_BUS}, 4294 {"ACPI_BUTTON", ACPI_BUTTON}, 4295 {"ACPI_EC", ACPI_EC}, 4296 {"ACPI_FAN", ACPI_FAN}, 4297 {"ACPI_POWERRES", ACPI_POWERRES}, 4298 {"ACPI_PROCESSOR", ACPI_PROCESSOR}, 4299 {"ACPI_THERMAL", ACPI_THERMAL}, 4300 {"ACPI_TIMER", ACPI_TIMER}, 4301 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS}, 4302 {NULL, 0} 4303 }; 4304 4305 static struct debugtag dbg_level[] = { 4306 {"ACPI_LV_INIT", ACPI_LV_INIT}, 4307 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT}, 4308 {"ACPI_LV_INFO", ACPI_LV_INFO}, 4309 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR}, 4310 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS}, 4311 4312 /* Trace verbosity level 1 [Standard Trace Level] */ 4313 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES}, 4314 {"ACPI_LV_PARSE", ACPI_LV_PARSE}, 4315 {"ACPI_LV_LOAD", ACPI_LV_LOAD}, 4316 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH}, 4317 {"ACPI_LV_EXEC", ACPI_LV_EXEC}, 4318 {"ACPI_LV_NAMES", ACPI_LV_NAMES}, 4319 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION}, 4320 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD}, 4321 {"ACPI_LV_TABLES", ACPI_LV_TABLES}, 4322 {"ACPI_LV_VALUES", ACPI_LV_VALUES}, 4323 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS}, 4324 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES}, 4325 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS}, 4326 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE}, 4327 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1}, 4328 4329 /* Trace verbosity level 2 [Function tracing and memory allocation] */ 4330 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS}, 4331 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS}, 4332 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS}, 4333 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2}, 4334 {"ACPI_LV_ALL", ACPI_LV_ALL}, 4335 4336 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */ 4337 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX}, 4338 {"ACPI_LV_THREADS", ACPI_LV_THREADS}, 4339 {"ACPI_LV_IO", ACPI_LV_IO}, 4340 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS}, 4341 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3}, 4342 4343 /* Exceptionally verbose output -- also used in the global "DebugLevel" */ 4344 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE}, 4345 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO}, 4346 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES}, 4347 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS}, 4348 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE}, 4349 {NULL, 0} 4350 }; 4351 4352 static void 4353 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag) 4354 { 4355 char *ep; 4356 int i, l; 4357 int set; 4358 4359 while (*cp) { 4360 if (isspace(*cp)) { 4361 cp++; 4362 continue; 4363 } 4364 ep = cp; 4365 while (*ep && !isspace(*ep)) 4366 ep++; 4367 if (*cp == '!') { 4368 set = 0; 4369 cp++; 4370 if (cp == ep) 4371 continue; 4372 } else { 4373 set = 1; 4374 } 4375 l = ep - cp; 4376 for (i = 0; tag[i].name != NULL; i++) { 4377 if (!strncmp(cp, tag[i].name, l)) { 4378 if (set) 4379 *flag |= tag[i].value; 4380 else 4381 *flag &= ~tag[i].value; 4382 } 4383 } 4384 cp = ep; 4385 } 4386 } 4387 4388 static void 4389 acpi_set_debugging(void *junk) 4390 { 4391 char *layer, *level; 4392 4393 if (cold) { 4394 AcpiDbgLayer = 0; 4395 AcpiDbgLevel = 0; 4396 } 4397 4398 layer = kern_getenv("debug.acpi.layer"); 4399 level = kern_getenv("debug.acpi.level"); 4400 if (layer == NULL && level == NULL) 4401 return; 4402 4403 printf("ACPI set debug"); 4404 if (layer != NULL) { 4405 if (strcmp("NONE", layer) != 0) 4406 printf(" layer '%s'", layer); 4407 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer); 4408 freeenv(layer); 4409 } 4410 if (level != NULL) { 4411 if (strcmp("NONE", level) != 0) 4412 printf(" level '%s'", level); 4413 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel); 4414 freeenv(level); 4415 } 4416 printf("\n"); 4417 } 4418 4419 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging, 4420 NULL); 4421 4422 static int 4423 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS) 4424 { 4425 int error, *dbg; 4426 struct debugtag *tag; 4427 struct sbuf sb; 4428 char temp[128]; 4429 4430 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL) 4431 return (ENOMEM); 4432 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) { 4433 tag = &dbg_layer[0]; 4434 dbg = &AcpiDbgLayer; 4435 } else { 4436 tag = &dbg_level[0]; 4437 dbg = &AcpiDbgLevel; 4438 } 4439 4440 /* Get old values if this is a get request. */ 4441 ACPI_SERIAL_BEGIN(acpi); 4442 if (*dbg == 0) { 4443 sbuf_cpy(&sb, "NONE"); 4444 } else if (req->newptr == NULL) { 4445 for (; tag->name != NULL; tag++) { 4446 if ((*dbg & tag->value) == tag->value) 4447 sbuf_printf(&sb, "%s ", tag->name); 4448 } 4449 } 4450 sbuf_trim(&sb); 4451 sbuf_finish(&sb); 4452 strlcpy(temp, sbuf_data(&sb), sizeof(temp)); 4453 sbuf_delete(&sb); 4454 4455 error = sysctl_handle_string(oidp, temp, sizeof(temp), req); 4456 4457 /* Check for error or no change */ 4458 if (error == 0 && req->newptr != NULL) { 4459 *dbg = 0; 4460 kern_setenv((char *)oidp->oid_arg1, temp); 4461 acpi_set_debugging(NULL); 4462 } 4463 ACPI_SERIAL_END(acpi); 4464 4465 return (error); 4466 } 4467 4468 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, 4469 CTLFLAG_RW | CTLTYPE_STRING | CTLFLAG_MPSAFE, "debug.acpi.layer", 0, 4470 acpi_debug_sysctl, "A", 4471 ""); 4472 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, 4473 CTLFLAG_RW | CTLTYPE_STRING | CTLFLAG_MPSAFE, "debug.acpi.level", 0, 4474 acpi_debug_sysctl, "A", 4475 ""); 4476 #endif /* ACPI_DEBUG */ 4477 4478 static int 4479 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS) 4480 { 4481 int error; 4482 int old; 4483 4484 old = acpi_debug_objects; 4485 error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req); 4486 if (error != 0 || req->newptr == NULL) 4487 return (error); 4488 if (old == acpi_debug_objects || (old && acpi_debug_objects)) 4489 return (0); 4490 4491 ACPI_SERIAL_BEGIN(acpi); 4492 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE; 4493 ACPI_SERIAL_END(acpi); 4494 4495 return (0); 4496 } 4497 4498 static int 4499 acpi_parse_interfaces(char *str, struct acpi_interface *iface) 4500 { 4501 char *p; 4502 size_t len; 4503 int i, j; 4504 4505 p = str; 4506 while (isspace(*p) || *p == ',') 4507 p++; 4508 len = strlen(p); 4509 if (len == 0) 4510 return (0); 4511 p = strdup(p, M_TEMP); 4512 for (i = 0; i < len; i++) 4513 if (p[i] == ',') 4514 p[i] = '\0'; 4515 i = j = 0; 4516 while (i < len) 4517 if (isspace(p[i]) || p[i] == '\0') 4518 i++; 4519 else { 4520 i += strlen(p + i) + 1; 4521 j++; 4522 } 4523 if (j == 0) { 4524 free(p, M_TEMP); 4525 return (0); 4526 } 4527 iface->data = malloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK); 4528 iface->num = j; 4529 i = j = 0; 4530 while (i < len) 4531 if (isspace(p[i]) || p[i] == '\0') 4532 i++; 4533 else { 4534 iface->data[j] = p + i; 4535 i += strlen(p + i) + 1; 4536 j++; 4537 } 4538 4539 return (j); 4540 } 4541 4542 static void 4543 acpi_free_interfaces(struct acpi_interface *iface) 4544 { 4545 4546 free(iface->data[0], M_TEMP); 4547 free(iface->data, M_TEMP); 4548 } 4549 4550 static void 4551 acpi_reset_interfaces(device_t dev) 4552 { 4553 struct acpi_interface list; 4554 ACPI_STATUS status; 4555 int i; 4556 4557 if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) { 4558 for (i = 0; i < list.num; i++) { 4559 status = AcpiInstallInterface(list.data[i]); 4560 if (ACPI_FAILURE(status)) 4561 device_printf(dev, 4562 "failed to install _OSI(\"%s\"): %s\n", 4563 list.data[i], AcpiFormatException(status)); 4564 else if (bootverbose) 4565 device_printf(dev, "installed _OSI(\"%s\")\n", 4566 list.data[i]); 4567 } 4568 acpi_free_interfaces(&list); 4569 } 4570 if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) { 4571 for (i = 0; i < list.num; i++) { 4572 status = AcpiRemoveInterface(list.data[i]); 4573 if (ACPI_FAILURE(status)) 4574 device_printf(dev, 4575 "failed to remove _OSI(\"%s\"): %s\n", 4576 list.data[i], AcpiFormatException(status)); 4577 else if (bootverbose) 4578 device_printf(dev, "removed _OSI(\"%s\")\n", 4579 list.data[i]); 4580 } 4581 acpi_free_interfaces(&list); 4582 } 4583 } 4584 4585 static int 4586 acpi_pm_func(u_long cmd, void *arg, ...) 4587 { 4588 int state, acpi_state; 4589 int error; 4590 struct acpi_softc *sc; 4591 va_list ap; 4592 4593 error = 0; 4594 switch (cmd) { 4595 case POWER_CMD_SUSPEND: 4596 sc = (struct acpi_softc *)arg; 4597 if (sc == NULL) { 4598 error = EINVAL; 4599 goto out; 4600 } 4601 4602 va_start(ap, arg); 4603 state = va_arg(ap, int); 4604 va_end(ap); 4605 4606 switch (state) { 4607 case POWER_SLEEP_STATE_STANDBY: 4608 acpi_state = sc->acpi_standby_sx; 4609 break; 4610 case POWER_SLEEP_STATE_SUSPEND: 4611 acpi_state = sc->acpi_suspend_sx; 4612 break; 4613 case POWER_SLEEP_STATE_HIBERNATE: 4614 acpi_state = ACPI_STATE_S4; 4615 break; 4616 default: 4617 error = EINVAL; 4618 goto out; 4619 } 4620 4621 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state))) 4622 error = ENXIO; 4623 break; 4624 default: 4625 error = EINVAL; 4626 goto out; 4627 } 4628 4629 out: 4630 return (error); 4631 } 4632 4633 static void 4634 acpi_pm_register(void *arg) 4635 { 4636 if (!cold || resource_disabled("acpi", 0)) 4637 return; 4638 4639 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL); 4640 } 4641 4642 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, NULL); 4643