1 /*- 2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.kfreebsd.org> 3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.kfreebsd.org> 4 * Copyright (c) 2000, 2001 Michael Smith 5 * Copyright (c) 2000 BSDi 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/sys/dev/acpica/acpi.c,v 1.243.2.4.4.1 2009/04/15 03:14:26 kensmith Exp $ 30 */ 31 32 #include "opt_acpi.h" 33 #include <sys/param.h> 34 #include <sys/kernel.h> 35 #include <sys/proc.h> 36 #include <sys/fcntl.h> 37 #include <sys/malloc.h> 38 #include <sys/module.h> 39 #include <sys/bus.h> 40 #include <sys/conf.h> 41 #include <sys/reboot.h> 42 #include <sys/sysctl.h> 43 #include <sys/ctype.h> 44 #include <sys/linker.h> 45 #include <sys/power.h> 46 #include <sys/sbuf.h> 47 #include <sys/device.h> 48 #include <sys/spinlock.h> 49 #include <sys/spinlock2.h> 50 #include <sys/uuid.h> 51 52 #include <sys/rman.h> 53 #include <bus/isa/isavar.h> 54 #include <bus/isa/pnpvar.h> 55 56 #include "acpi.h" 57 #include <dev/acpica/acpivar.h> 58 #include <dev/acpica/acpiio.h> 59 #include <dev/acpica/acpiio_mcall.h> 60 #include "achware.h" 61 #include "acnamesp.h" 62 #include "acglobal.h" 63 64 #include "pci_if.h" 65 #include <bus/pci/pci_cfgreg.h> 66 #include <bus/pci/pcivar.h> 67 #include <bus/pci/pci_private.h> 68 69 #include <vm/vm_param.h> 70 71 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices"); 72 73 /* Hooks for the ACPICA debugging infrastructure */ 74 #define _COMPONENT ACPI_BUS 75 ACPI_MODULE_NAME("ACPI"); 76 77 static d_open_t acpiopen; 78 static d_close_t acpiclose; 79 static d_ioctl_t acpiioctl; 80 81 static struct dev_ops acpi_ops = { 82 { "acpi", 0, D_MPSAFE }, 83 .d_open = acpiopen, 84 .d_close = acpiclose, 85 .d_ioctl = acpiioctl 86 }; 87 88 struct acpi_interface { 89 ACPI_STRING *data; 90 int num; 91 }; 92 93 /* Global mutex for locking access to the ACPI subsystem. */ 94 struct lock acpi_lock; 95 struct lwkt_token acpi_token = LWKT_TOKEN_INITIALIZER(acpi_token); 96 97 /* Bitmap of device quirks. */ 98 int acpi_quirks; 99 100 static int acpi_modevent(struct module *mod, int event, void *junk); 101 static void acpi_identify(driver_t *driver, device_t parent); 102 static int acpi_probe(device_t dev); 103 static int acpi_attach(device_t dev); 104 static int acpi_suspend(device_t dev); 105 static int acpi_resume(device_t dev); 106 static int acpi_shutdown(device_t dev); 107 static device_t acpi_add_child(device_t bus, device_t parent, int order, const char *name, 108 int unit); 109 static int acpi_print_child(device_t bus, device_t child); 110 static void acpi_probe_nomatch(device_t bus, device_t child); 111 static void acpi_driver_added(device_t dev, driver_t *driver); 112 static int acpi_read_ivar(device_t dev, device_t child, int index, 113 uintptr_t *result); 114 static int acpi_write_ivar(device_t dev, device_t child, int index, 115 uintptr_t value); 116 static struct resource_list *acpi_get_rlist(device_t dev, device_t child); 117 static int acpi_sysres_alloc(device_t dev); 118 static struct resource *acpi_alloc_resource(device_t bus, device_t child, 119 int type, int *rid, u_long start, u_long end, 120 u_long count, u_int flags, int cpuid); 121 static int acpi_release_resource(device_t bus, device_t child, int type, 122 int rid, struct resource *r); 123 static void acpi_delete_resource(device_t bus, device_t child, int type, 124 int rid); 125 static uint32_t acpi_isa_get_logicalid(device_t dev); 126 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count); 127 static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids); 128 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev, 129 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters, 130 ACPI_BUFFER *ret); 131 static int acpi_device_pwr_for_sleep(device_t bus, device_t dev, 132 int *dstate); 133 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, 134 void *context, void **retval); 135 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev, 136 int max_depth, acpi_scan_cb_t user_fn, void *arg); 137 static int acpi_set_powerstate_method(device_t bus, device_t child, 138 int state); 139 static int acpi_isa_pnp_probe(device_t bus, device_t child, 140 struct isa_pnp_id *ids); 141 static void acpi_probe_children(device_t bus); 142 static void acpi_probe_order(ACPI_HANDLE handle, int *order); 143 static void acpi_disable_not_present(device_t child); 144 static void acpi_reprobe_children(device_t bus, device_t *children, 145 int cnt); 146 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level, 147 void *context, void **status); 148 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state); 149 static void acpi_shutdown_final(void *arg, int howto); 150 static void acpi_enable_fixed_events(struct acpi_softc *sc); 151 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate); 152 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate); 153 static int acpi_wake_prep_walk(int sstate); 154 static int acpi_wake_sysctl_walk(device_t dev); 155 #ifdef notyet 156 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS); 157 #endif 158 static void acpi_system_eventhandler_sleep(void *arg, int state); 159 static void acpi_system_eventhandler_wakeup(void *arg, int state); 160 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); 161 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); 162 static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS); 163 static int acpi_pm_func(u_long cmd, void *arg, ...); 164 static int acpi_child_location_str_method(device_t acdev, device_t child, 165 char *buf, size_t buflen); 166 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child, 167 char *buf, size_t buflen); 168 static void acpi_enable_pcie(void); 169 static void acpi_reset_interfaces(device_t dev); 170 171 static device_method_t acpi_methods[] = { 172 /* Device interface */ 173 DEVMETHOD(device_identify, acpi_identify), 174 DEVMETHOD(device_probe, acpi_probe), 175 DEVMETHOD(device_attach, acpi_attach), 176 DEVMETHOD(device_shutdown, acpi_shutdown), 177 DEVMETHOD(device_detach, bus_generic_detach), 178 DEVMETHOD(device_suspend, acpi_suspend), 179 DEVMETHOD(device_resume, acpi_resume), 180 181 /* Bus interface */ 182 DEVMETHOD(bus_add_child, acpi_add_child), 183 DEVMETHOD(bus_print_child, acpi_print_child), 184 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch), 185 DEVMETHOD(bus_driver_added, acpi_driver_added), 186 DEVMETHOD(bus_read_ivar, acpi_read_ivar), 187 DEVMETHOD(bus_write_ivar, acpi_write_ivar), 188 DEVMETHOD(bus_get_resource_list, acpi_get_rlist), 189 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource), 190 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 191 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource), 192 DEVMETHOD(bus_release_resource, acpi_release_resource), 193 DEVMETHOD(bus_delete_resource, acpi_delete_resource), 194 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method), 195 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method), 196 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 197 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 198 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 199 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 200 201 /* ACPI bus */ 202 DEVMETHOD(acpi_id_probe, acpi_device_id_probe), 203 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj), 204 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep), 205 DEVMETHOD(acpi_scan_children, acpi_device_scan_children), 206 207 /* PCI emulation */ 208 DEVMETHOD(pci_set_powerstate, acpi_set_powerstate_method), 209 210 /* ISA emulation */ 211 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe), 212 213 DEVMETHOD_END 214 }; 215 216 static driver_t acpi_driver = { 217 "acpi", 218 acpi_methods, 219 sizeof(struct acpi_softc), 220 .gpri = KOBJ_GPRI_ACPI+2 221 }; 222 223 static devclass_t acpi_devclass; 224 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, NULL); 225 MODULE_VERSION(acpi, 1); 226 227 ACPI_SERIAL_DECL(acpi, "ACPI serializer"); 228 229 /* Local pools for managing system resources for ACPI child devices. */ 230 static struct rman acpi_rman_io, acpi_rman_mem; 231 232 #define ACPI_MINIMUM_AWAKETIME 5 233 234 static const char* sleep_state_names[] = { 235 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"}; 236 237 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging"); 238 static char acpi_ca_version[12]; 239 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD, 240 acpi_ca_version, 0, "Version of Intel ACPICA"); 241 242 /* 243 * Allow overriding _OSI methods. 244 */ 245 static char acpi_install_interface[256]; 246 TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface, 247 sizeof(acpi_install_interface)); 248 static char acpi_remove_interface[256]; 249 TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface, 250 sizeof(acpi_remove_interface)); 251 252 /* 253 * Use this tunable to disable the control method auto-serialization 254 * mechanism that was added in 20140214 and superseded the previous 255 * AcpiGbl_SerializeAllMethods global. 256 */ 257 static int acpi_auto_serialize_methods = 1; 258 TUNABLE_INT("hw.acpi.auto_serialize_methods", &acpi_auto_serialize_methods); 259 260 /* Allow users to dump Debug objects without ACPI debugger. */ 261 static int acpi_debug_objects; 262 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects); 263 SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects, 264 CTLFLAG_RW | CTLTYPE_INT, NULL, 0, acpi_debug_objects_sysctl, "I", 265 "Enable Debug objects."); 266 267 /* Allow ignoring the XSDT. */ 268 static int acpi_ignore_xsdt; 269 TUNABLE_INT("debug.acpi.ignore_xsdt", &acpi_ignore_xsdt); 270 SYSCTL_INT(_debug_acpi, OID_AUTO, ignore_xsdt, CTLFLAG_RD, 271 &acpi_ignore_xsdt, 1, "Ignore the XSDT, forcing the use of the RSDT."); 272 273 /* Allow the interpreter to ignore common mistakes in BIOS. */ 274 static int acpi_interpreter_slack = 1; 275 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack); 276 SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RD, 277 &acpi_interpreter_slack, 1, "Turn on interpreter slack mode."); 278 279 /* Allow preferring 32-bit FADT register addresses over the 64-bit ones. */ 280 static int acpi_fadt_addr32; 281 TUNABLE_INT("debug.acpi.fadt_addr32", &acpi_fadt_addr32); 282 SYSCTL_INT(_debug_acpi, OID_AUTO, fadt_addr32, CTLFLAG_RD, 283 &acpi_fadt_addr32, 1, 284 "Prefer 32-bit FADT register addresses over 64-bit ones."); 285 286 /* Prefer 32-bit FACS table addresses over the 64-bit ones. */ 287 static int acpi_facs_addr32 = 1; 288 TUNABLE_INT("debug.acpi.facs_addr32", &acpi_facs_addr32); 289 SYSCTL_INT(_debug_acpi, OID_AUTO, facs_addr32, CTLFLAG_RD, 290 &acpi_facs_addr32, 1, 291 "Prefer 32-bit FACS table addresses over 64-bit ones."); 292 293 /* Power devices off and on in suspend and resume. XXX Remove once tested. */ 294 static int acpi_do_powerstate = 1; 295 TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate); 296 SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW, 297 &acpi_do_powerstate, 1, "Turn off devices when suspending."); 298 299 /* Allow users to override quirks. */ 300 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks); 301 302 /* Allow to call ACPI methods from userland. */ 303 static int acpi_allow_mcall; 304 TUNABLE_INT("debug.acpi.allow_method_calls", &acpi_allow_mcall); 305 306 static int acpi_susp_bounce; 307 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW, 308 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices."); 309 310 /* 311 * ACPI can only be loaded as a module by the loader; activating it after 312 * system bootstrap time is not useful, and can be fatal to the system. 313 * It also cannot be unloaded, since the entire system bus heirarchy hangs 314 * off it. 315 */ 316 static int 317 acpi_modevent(struct module *mod, int event, void *junk) 318 { 319 switch (event) { 320 case MOD_LOAD: 321 if (!cold) { 322 kprintf("The ACPI driver cannot be loaded after boot.\n"); 323 return (EPERM); 324 } 325 break; 326 case MOD_UNLOAD: 327 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI) 328 return (EBUSY); 329 break; 330 default: 331 break; 332 } 333 return (0); 334 } 335 336 /* 337 * Perform early initialization. 338 */ 339 ACPI_STATUS 340 acpi_Startup(void) 341 { 342 static int started = 0; 343 ACPI_STATUS status; 344 int val; 345 346 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 347 348 /* Only run the startup code once. The MADT driver also calls this. */ 349 if (started) 350 return_VALUE (AE_OK); 351 started = 1; 352 353 /* Start up the ACPICA subsystem. */ 354 status = AcpiInitializeSubsystem(); 355 if (ACPI_FAILURE(status)) { 356 kprintf("ACPI: Subsystem initialization failed: %s\n", 357 AcpiFormatException(status)); 358 return_VALUE (status); 359 } 360 361 /* 362 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing 363 * if more tables exist. 364 */ 365 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) { 366 kprintf("ACPI: Table initialization failed: %s\n", 367 AcpiFormatException(status)); 368 return_VALUE (status); 369 } 370 371 /* Set up any quirks we have for this system. */ 372 if (acpi_quirks == ACPI_Q_OK) 373 acpi_table_quirks(&acpi_quirks); 374 375 /* If the user manually set the disabled hint to 0, force-enable ACPI. */ 376 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0) 377 acpi_quirks &= ~ACPI_Q_BROKEN; 378 if (acpi_quirks & ACPI_Q_BROKEN) { 379 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n"); 380 status = AE_SUPPORT; 381 } 382 383 return_VALUE (status); 384 } 385 386 /* 387 * Detect ACPI, perform early initialisation 388 */ 389 static void 390 acpi_identify(driver_t *driver, device_t parent) 391 { 392 device_t child; 393 394 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 395 396 if (!cold) 397 return_VOID; 398 399 /* Check that we haven't been disabled with a hint. */ 400 if (resource_disabled("acpi", 0)) 401 return_VOID; 402 403 /* Make sure we're not being doubly invoked. */ 404 if (device_find_child(parent, "acpi", 0) != NULL) 405 return_VOID; 406 407 ksnprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION); 408 409 /* Initialize root tables. */ 410 if (ACPI_FAILURE(acpi_Startup())) { 411 kprintf("ACPI: Try disabling either ACPI or apic support.\n"); 412 return_VOID; 413 } 414 415 /* Attach the actual ACPI device. */ 416 if ((child = BUS_ADD_CHILD(parent, parent, 10, "acpi", 0)) == NULL) { 417 device_printf(parent, "device_identify failed\n"); 418 return_VOID; 419 } 420 } 421 422 /* 423 * Fetch some descriptive data from ACPI to put in our attach message. 424 */ 425 static int 426 acpi_probe(device_t dev) 427 { 428 ACPI_TABLE_RSDP *rsdp; 429 ACPI_TABLE_HEADER *rsdt; 430 ACPI_PHYSICAL_ADDRESS paddr; 431 char buf[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2]; 432 struct sbuf sb; 433 434 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 435 436 if (power_pm_get_type() != POWER_PM_TYPE_NONE && 437 power_pm_get_type() != POWER_PM_TYPE_ACPI) { 438 device_printf(dev, "probe failed, other PM system enabled.\n"); 439 return_VALUE (ENXIO); 440 } 441 442 if ((paddr = AcpiOsGetRootPointer()) == 0 || 443 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL) 444 return_VALUE (ENXIO); 445 if (acpi_ignore_xsdt == 0 && 446 rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0) 447 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress; 448 else 449 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress; 450 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 451 452 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL) 453 return_VALUE (ENXIO); 454 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN); 455 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE); 456 sbuf_trim(&sb); 457 sbuf_putc(&sb, ' '); 458 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE); 459 sbuf_trim(&sb); 460 sbuf_finish(&sb); 461 device_set_desc_copy(dev, sbuf_data(&sb)); 462 sbuf_delete(&sb); 463 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 464 465 return_VALUE (0); 466 } 467 468 static int 469 acpi_attach(device_t dev) 470 { 471 struct acpi_softc *sc; 472 ACPI_STATUS status; 473 int error, state; 474 UINT32 flags; 475 UINT8 TypeA, TypeB; 476 char *env; 477 478 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 479 480 sc = device_get_softc(dev); 481 sc->acpi_dev = dev; 482 callout_init(&sc->susp_force_to); 483 484 if ((error = acpi_task_thread_init())) { 485 device_printf(dev, "Could not start task thread.\n"); 486 goto out2; 487 } 488 489 error = ENXIO; 490 491 /* Initialize resource manager. */ 492 acpi_rman_io.rm_type = RMAN_ARRAY; 493 acpi_rman_io.rm_start = 0; 494 acpi_rman_io.rm_end = 0xffff; 495 acpi_rman_io.rm_descr = "ACPI I/O ports"; 496 if (rman_init(&acpi_rman_io, -1) != 0) 497 panic("acpi rman_init IO ports failed"); 498 acpi_rman_mem.rm_type = RMAN_ARRAY; 499 acpi_rman_mem.rm_start = 0; 500 acpi_rman_mem.rm_end = ~0ul; 501 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses"; 502 if (rman_init(&acpi_rman_mem, -1) != 0) 503 panic("acpi rman_init memory failed"); 504 505 /* Initialise the ACPI mutex */ 506 ACPI_LOCK_INIT(acpi, "acpi"); 507 ACPI_SERIAL_INIT(acpi); 508 509 ACPI_LOCK(acpi); 510 511 /* 512 * Set the globals from our tunables. This is needed because ACPICA 513 * uses UINT8 for some values and we have no tunable_byte. 514 */ 515 AcpiGbl_AutoSerializeMethods = acpi_auto_serialize_methods ? TRUE : FALSE; 516 AcpiGbl_DoNotUseXsdt = acpi_ignore_xsdt ? TRUE : FALSE; 517 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE; 518 AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE; 519 AcpiGbl_Use32BitFadtAddresses = acpi_fadt_addr32 ? TRUE : FALSE; 520 AcpiGbl_Use32BitFacsAddresses = acpi_facs_addr32 ? TRUE : FALSE; 521 522 #ifndef ACPI_DEBUG 523 /* 524 * Disable Debug Object output. 525 */ 526 AcpiDbgLevel &= ~ACPI_LV_DEBUG_OBJECT; 527 #endif 528 529 /* Override OS interfaces if the user requested. */ 530 acpi_reset_interfaces(dev); 531 532 /* Load ACPI name space. */ 533 status = AcpiLoadTables(); 534 if (ACPI_FAILURE(status)) { 535 device_printf(dev, "Could not load Namespace: %s\n", 536 AcpiFormatException(status)); 537 goto out; 538 } 539 540 /* Handle MCFG table if present. */ 541 acpi_enable_pcie(); 542 543 /* 544 * Note that some systems (specifically, those with namespace evaluation 545 * issues that require the avoidance of parts of the namespace) must 546 * avoid running _INI and _STA on everything, as well as dodging the final 547 * object init pass. 548 * 549 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT). 550 * 551 * XXX We should arrange for the object init pass after we have attached 552 * all our child devices, but on many systems it works here. 553 */ 554 flags = ACPI_FULL_INITIALIZATION; 555 if (ktestenv("debug.acpi.avoid")) 556 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; 557 558 /* Bring the hardware and basic handlers online. */ 559 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) { 560 device_printf(dev, "Could not enable ACPI: %s\n", 561 AcpiFormatException(status)); 562 goto out; 563 } 564 565 /* 566 * Fix up the interrupt timer after enabling ACPI, so that the 567 * interrupt cputimer that choked by ACPI power management could 568 * be resurrected before probing various devices. 569 */ 570 DELAY(5000); 571 cputimer_intr_pmfixup(); 572 573 /* 574 * Call the ECDT probe function to provide EC functionality before 575 * the namespace has been evaluated. 576 * 577 * XXX This happens before the sysresource devices have been probed and 578 * attached so its resources come from nexus0. In practice, this isn't 579 * a problem but should be addressed eventually. 580 */ 581 acpi_ec_ecdt_probe(dev); 582 583 /* Bring device objects and regions online. */ 584 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) { 585 device_printf(dev, "Could not initialize ACPI objects: %s\n", 586 AcpiFormatException(status)); 587 goto out; 588 } 589 590 /* 591 * Setup our sysctl tree. 592 * 593 * XXX: This doesn't check to make sure that none of these fail. 594 */ 595 sysctl_ctx_init(&sc->acpi_sysctl_ctx); 596 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx, 597 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, 598 device_get_name(dev), CTLFLAG_RD, 0, ""); 599 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 600 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD, 601 0, 0, acpi_supported_sleep_state_sysctl, "A", ""); 602 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 603 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW, 604 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); 605 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 606 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW, 607 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); 608 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 609 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW, 610 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", ""); 611 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 612 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW, 613 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", ""); 614 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 615 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW, 616 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", ""); 617 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 618 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0, 619 "sleep delay"); 620 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 621 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode"); 622 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 623 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode"); 624 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 625 OID_AUTO, "disable_on_reboot", CTLFLAG_RW, 626 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system"); 627 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 628 OID_AUTO, "handle_reboot", CTLFLAG_RW, 629 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot"); 630 631 /* 632 * Default to 1 second before sleeping to give some machines time to 633 * stabilize. 634 */ 635 sc->acpi_sleep_delay = 1; 636 if (bootverbose) 637 sc->acpi_verbose = 1; 638 if ((env = kgetenv("hw.acpi.verbose")) != NULL) { 639 if (strcmp(env, "0") != 0) 640 sc->acpi_verbose = 1; 641 kfreeenv(env); 642 } 643 644 /* Only enable reboot by default if the FADT says it is available. */ 645 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) 646 sc->acpi_handle_reboot = 1; 647 648 /* Only enable S4BIOS by default if the FACS says it is available. */ 649 if (AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT) 650 sc->acpi_s4bios = 1; 651 652 /* 653 * Dispatch the default sleep state to devices. The lid switch is set 654 * to NONE by default to avoid surprising users. 655 */ 656 sc->acpi_power_button_sx = ACPI_STATE_S5; 657 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1; 658 sc->acpi_standby_sx = ACPI_STATE_S1; 659 sc->acpi_suspend_sx = ACPI_STATE_S3; 660 661 /* Pick the first valid sleep state for the sleep button default. */ 662 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1; 663 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++) 664 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) { 665 sc->acpi_sleep_button_sx = state; 666 break; 667 } 668 669 acpi_enable_fixed_events(sc); 670 671 /* 672 * Scan the namespace and attach/initialise children. 673 */ 674 675 /* Register our shutdown handler. */ 676 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc, 677 SHUTDOWN_PRI_LAST); 678 679 /* 680 * Register our acpi event handlers. 681 * XXX should be configurable eg. via userland policy manager. 682 */ 683 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep, 684 sc, ACPI_EVENT_PRI_LAST); 685 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup, 686 sc, ACPI_EVENT_PRI_LAST); 687 688 /* Flag our initial states. */ 689 sc->acpi_enabled = 1; 690 sc->acpi_sstate = ACPI_STATE_S0; 691 sc->acpi_sleep_disabled = 0; 692 /* Create the control device */ 693 sc->acpi_dev_t = make_dev(&acpi_ops, 0, UID_ROOT, GID_WHEEL, 0644, "acpi"); 694 sc->acpi_dev_t->si_drv1 = sc; 695 696 if ((error = acpi_machdep_init(dev))) 697 goto out; 698 699 /* Register ACPI again to pass the correct argument of pm_func. */ 700 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc); 701 702 if (!acpi_disabled("bus")) 703 acpi_probe_children(dev); 704 705 /* Update all GPEs and enable runtime GPEs. */ 706 status = AcpiUpdateAllGpes(); 707 if (ACPI_FAILURE(status)) { 708 device_printf(dev, "Could not update all GPEs: %s\n", 709 AcpiFormatException(status)); 710 } 711 712 /* Allow sleep request after a while. */ 713 /* timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME); */ 714 715 error = 0; 716 717 out: 718 ACPI_UNLOCK(acpi); 719 out2: 720 cputimer_intr_pmfixup(); 721 acpi_task_thread_schedule(); 722 723 return_VALUE (error); 724 } 725 726 static int 727 acpi_suspend(device_t dev) 728 { 729 device_t child, *devlist; 730 int error, i, numdevs, pstate; 731 732 /* First give child devices a chance to suspend. */ 733 error = bus_generic_suspend(dev); 734 if (error) 735 return (error); 736 737 /* 738 * Now, set them into the appropriate power state, usually D3. If the 739 * device has an _SxD method for the next sleep state, use that power 740 * state instead. 741 */ 742 device_get_children(dev, &devlist, &numdevs); 743 for (i = 0; i < numdevs; i++) { 744 /* If the device is not attached, we've powered it down elsewhere. */ 745 child = devlist[i]; 746 if (!device_is_attached(child)) 747 continue; 748 749 /* 750 * Default to D3 for all sleep states. The _SxD method is optional 751 * so set the powerstate even if it's absent. 752 */ 753 pstate = PCI_POWERSTATE_D3; 754 error = acpi_device_pwr_for_sleep(device_get_parent(child), 755 child, &pstate); 756 if ((error == 0 || error == ESRCH) && acpi_do_powerstate) 757 pci_set_powerstate(child, pstate); 758 } 759 kfree(devlist, M_TEMP); 760 error = 0; 761 762 return (error); 763 } 764 765 static int 766 acpi_resume(device_t dev) 767 { 768 ACPI_HANDLE handle; 769 int i, numdevs; 770 device_t child, *devlist; 771 772 /* 773 * Put all devices in D0 before resuming them. Call _S0D on each one 774 * since some systems expect this. 775 */ 776 device_get_children(dev, &devlist, &numdevs); 777 for (i = 0; i < numdevs; i++) { 778 child = devlist[i]; 779 handle = acpi_get_handle(child); 780 if (handle) 781 AcpiEvaluateObject(handle, "_S0D", NULL, NULL); 782 if (device_is_attached(child) && acpi_do_powerstate) 783 pci_set_powerstate(child, PCI_POWERSTATE_D0); 784 } 785 kfree(devlist, M_TEMP); 786 787 return (bus_generic_resume(dev)); 788 } 789 790 static int 791 acpi_shutdown(device_t dev) 792 { 793 /* Allow children to shutdown first. */ 794 bus_generic_shutdown(dev); 795 796 /* 797 * Enable any GPEs that are able to power-on the system (i.e., RTC). 798 * Also, disable any that are not valid for this state (most). 799 */ 800 acpi_wake_prep_walk(ACPI_STATE_S5); 801 802 return (0); 803 } 804 805 /* 806 * Handle a new device being added 807 */ 808 static device_t 809 acpi_add_child(device_t bus, device_t parent, int order, const char *name, int unit) 810 { 811 struct acpi_device *ad; 812 device_t child; 813 814 if ((ad = kmalloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL) 815 return (NULL); 816 817 resource_list_init(&ad->ad_rl); 818 child = device_add_child_ordered(parent, order, name, unit); 819 if (child != NULL) 820 device_set_ivars(child, ad); 821 else 822 kfree(ad, M_ACPIDEV); 823 return (child); 824 } 825 826 static int 827 acpi_print_child(device_t bus, device_t child) 828 { 829 struct acpi_device *adev = device_get_ivars(child); 830 struct resource_list *rl = &adev->ad_rl; 831 int retval = 0; 832 833 retval += bus_print_child_header(bus, child); 834 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx"); 835 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx"); 836 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 837 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld"); 838 if (device_get_flags(child)) 839 retval += kprintf(" flags %#x", device_get_flags(child)); 840 retval += bus_print_child_footer(bus, child); 841 842 return (retval); 843 } 844 845 /* 846 * If this device is an ACPI child but no one claimed it, attempt 847 * to power it off. We'll power it back up when a driver is added. 848 * 849 * XXX Disabled for now since many necessary devices (like fdc and 850 * ATA) don't claim the devices we created for them but still expect 851 * them to be powered up. 852 */ 853 static void 854 acpi_probe_nomatch(device_t bus, device_t child) 855 { 856 857 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */ 858 } 859 860 /* 861 * If a new driver has a chance to probe a child, first power it up. 862 * 863 * XXX Disabled for now (see acpi_probe_nomatch for details). 864 */ 865 static void 866 acpi_driver_added(device_t dev, driver_t *driver) 867 { 868 device_t child, *devlist; 869 int i, numdevs; 870 871 DEVICE_IDENTIFY(driver, dev); 872 device_get_children(dev, &devlist, &numdevs); 873 for (i = 0; i < numdevs; i++) { 874 child = devlist[i]; 875 if (device_get_state(child) == DS_NOTPRESENT) { 876 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */ 877 if (device_probe_and_attach(child) != 0) { 878 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */ 879 } 880 } 881 } 882 kfree(devlist, M_TEMP); 883 } 884 885 /* Location hint for devctl(8) */ 886 static int 887 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf, 888 size_t buflen) 889 { 890 struct acpi_device *dinfo = device_get_ivars(child); 891 892 if (dinfo->ad_handle) 893 ksnprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle)); 894 else 895 ksnprintf(buf, buflen, "unknown"); 896 return (0); 897 } 898 899 /* PnP information for devctl(8) */ 900 static int 901 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf, 902 size_t buflen) 903 { 904 ACPI_DEVICE_INFO *adinfo; 905 struct acpi_device *dinfo = device_get_ivars(child); 906 907 if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo))) { 908 ksnprintf(buf, buflen, "unknown"); 909 } else { 910 ksnprintf(buf, buflen, "_HID=%s _UID=%s", 911 (adinfo->Valid & ACPI_VALID_HID) ? 912 adinfo->HardwareId.String : "none", 913 (adinfo->Valid & ACPI_VALID_UID) ? 914 adinfo->UniqueId.String : "0"); 915 if (adinfo) 916 AcpiOsFree(adinfo); 917 } 918 return (0); 919 } 920 921 /* 922 * Handle per-device ivars 923 */ 924 static int 925 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) 926 { 927 struct acpi_device *ad; 928 929 if ((ad = device_get_ivars(child)) == NULL) { 930 device_printf(child, "device has no ivars\n"); 931 return (ENOENT); 932 } 933 934 /* ACPI and ISA compatibility ivars */ 935 switch(index) { 936 case ACPI_IVAR_HANDLE: 937 *(ACPI_HANDLE *)result = ad->ad_handle; 938 break; 939 case ACPI_IVAR_MAGIC: 940 *result = ad->ad_magic; 941 break; 942 case ACPI_IVAR_PRIVATE: 943 *(void **)result = ad->ad_private; 944 break; 945 case ACPI_IVAR_FLAGS: 946 *(int *)result = ad->ad_flags; 947 break; 948 case ACPI_IVAR_RECHECK: 949 *(int *)result = ad->ad_recheck; 950 break; 951 case ISA_IVAR_VENDORID: 952 case ISA_IVAR_SERIAL: 953 case ISA_IVAR_COMPATID: 954 *(int *)result = -1; 955 break; 956 case ISA_IVAR_LOGICALID: 957 *(int *)result = acpi_isa_get_logicalid(child); 958 break; 959 default: 960 return (ENOENT); 961 } 962 963 return (0); 964 } 965 966 static int 967 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value) 968 { 969 struct acpi_device *ad; 970 971 if ((ad = device_get_ivars(child)) == NULL) { 972 device_printf(child, "device has no ivars\n"); 973 return (ENOENT); 974 } 975 976 switch(index) { 977 case ACPI_IVAR_HANDLE: 978 ad->ad_handle = (ACPI_HANDLE)value; 979 break; 980 case ACPI_IVAR_MAGIC: 981 ad->ad_magic = value; 982 break; 983 case ACPI_IVAR_PRIVATE: 984 ad->ad_private = (void *)value; 985 break; 986 case ACPI_IVAR_FLAGS: 987 ad->ad_flags = (int)value; 988 break; 989 case ACPI_IVAR_RECHECK: 990 ad->ad_recheck = (int)value; 991 break; 992 default: 993 panic("bad ivar write request (%d)", index); 994 return (ENOENT); 995 } 996 997 return (0); 998 } 999 1000 /* 1001 * Handle child resource allocation/removal 1002 */ 1003 static struct resource_list * 1004 acpi_get_rlist(device_t dev, device_t child) 1005 { 1006 struct acpi_device *ad; 1007 1008 ad = device_get_ivars(child); 1009 return (&ad->ad_rl); 1010 } 1011 1012 /* 1013 * Pre-allocate/manage all memory and IO resources. Since rman can't handle 1014 * duplicates, we merge any in the sysresource attach routine. 1015 */ 1016 static int 1017 acpi_sysres_alloc(device_t dev) 1018 { 1019 struct resource *res; 1020 struct resource_list *rl; 1021 struct resource_list_entry *rle; 1022 struct rman *rm; 1023 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL }; 1024 device_t *children; 1025 int child_count, i; 1026 /* 1027 * Probe/attach any sysresource devices. This would be unnecessary if we 1028 * had multi-pass probe/attach. 1029 */ 1030 if (device_get_children(dev, &children, &child_count) != 0) 1031 return (ENXIO); 1032 for (i = 0; i < child_count; i++) { 1033 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL) 1034 device_probe_and_attach(children[i]); 1035 } 1036 kfree(children, M_TEMP); 1037 1038 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev); 1039 if(!rl) 1040 return 0; 1041 SLIST_FOREACH(rle, rl, link) { 1042 if (rle->res != NULL) { 1043 device_printf(dev, "duplicate resource for %lx\n", rle->start); 1044 continue; 1045 } 1046 1047 /* Only memory and IO resources are valid here. */ 1048 switch (rle->type) { 1049 case SYS_RES_IOPORT: 1050 rm = &acpi_rman_io; 1051 break; 1052 case SYS_RES_MEMORY: 1053 rm = &acpi_rman_mem; 1054 break; 1055 default: 1056 continue; 1057 } 1058 1059 /* Pre-allocate resource and add to our rman pool. */ 1060 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type, 1061 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 1062 0, -1); 1063 if (res != NULL) { 1064 rman_manage_region(rm, rman_get_start(res), rman_get_end(res)); 1065 rle->res = res; 1066 } else 1067 device_printf(dev, "reservation of %lx, %lx (%d) failed\n", 1068 rle->start, rle->count, rle->type); 1069 } 1070 return (0); 1071 } 1072 1073 static struct resource * 1074 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, 1075 u_long start, u_long end, u_long count, u_int flags, int cpuid) 1076 { 1077 ACPI_RESOURCE ares; 1078 struct acpi_device *ad = device_get_ivars(child); 1079 struct resource_list *rl = &ad->ad_rl; 1080 struct resource_list_entry *rle; 1081 struct resource *res; 1082 struct rman *rm; 1083 1084 res = NULL; 1085 1086 /* We only handle memory and IO resources through rman. */ 1087 switch (type) { 1088 case SYS_RES_IOPORT: 1089 rm = &acpi_rman_io; 1090 break; 1091 case SYS_RES_MEMORY: 1092 rm = &acpi_rman_mem; 1093 break; 1094 default: 1095 rm = NULL; 1096 } 1097 1098 ACPI_SERIAL_BEGIN(acpi); 1099 1100 /* 1101 * If this is an allocation of the "default" range for a given RID, and 1102 * we know what the resources for this device are (i.e., they're on the 1103 * child's resource list), use those start/end values. 1104 */ 1105 if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) { 1106 rle = resource_list_find(rl, type, *rid); 1107 if (rle == NULL) 1108 goto out; 1109 start = rle->start; 1110 end = rle->end; 1111 count = rle->count; 1112 cpuid = rle->cpuid; 1113 } 1114 1115 /* 1116 * If this is an allocation of a specific range, see if we can satisfy 1117 * the request from our system resource regions. If we can't, pass the 1118 * request up to the parent. 1119 */ 1120 if (start + count - 1 == end && rm != NULL) 1121 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE, 1122 child); 1123 if (res == NULL) { 1124 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid, 1125 start, end, count, flags, cpuid); 1126 } else { 1127 rman_set_rid(res, *rid); 1128 1129 /* If requested, activate the resource using the parent's method. */ 1130 if (flags & RF_ACTIVE) 1131 if (bus_activate_resource(child, type, *rid, res) != 0) { 1132 rman_release_resource(res); 1133 res = NULL; 1134 goto out; 1135 } 1136 } 1137 1138 if (res != NULL && device_get_parent(child) == bus) 1139 switch (type) { 1140 case SYS_RES_IRQ: 1141 /* 1142 * Since bus_config_intr() takes immediate effect, we cannot 1143 * configure the interrupt associated with a device when we 1144 * parse the resources but have to defer it until a driver 1145 * actually allocates the interrupt via bus_alloc_resource(). 1146 * 1147 * NB: Lookup failure is fine, since the device may add its 1148 * own interrupt resources, e.g. MSI or MSI-X. 1149 */ 1150 if (ACPI_SUCCESS( 1151 acpi_lookup_irq_resource(child, *rid, res, &ares))) { 1152 acpi_config_intr(child, &ares); 1153 } else { 1154 kprintf("irq resource not found\n"); 1155 } 1156 break; 1157 } 1158 1159 out: 1160 ACPI_SERIAL_END(acpi); 1161 return (res); 1162 } 1163 1164 static int 1165 acpi_release_resource(device_t bus, device_t child, int type, int rid, 1166 struct resource *r) 1167 { 1168 struct rman *rm; 1169 int ret; 1170 1171 /* We only handle memory and IO resources through rman. */ 1172 switch (type) { 1173 case SYS_RES_IOPORT: 1174 rm = &acpi_rman_io; 1175 break; 1176 case SYS_RES_MEMORY: 1177 rm = &acpi_rman_mem; 1178 break; 1179 default: 1180 rm = NULL; 1181 } 1182 1183 ACPI_SERIAL_BEGIN(acpi); 1184 1185 /* 1186 * If this resource belongs to one of our internal managers, 1187 * deactivate it and release it to the local pool. If it doesn't, 1188 * pass this request up to the parent. 1189 */ 1190 if (rm != NULL && rman_is_region_manager(r, rm)) { 1191 if (rman_get_flags(r) & RF_ACTIVE) { 1192 ret = bus_deactivate_resource(child, type, rid, r); 1193 if (ret != 0) 1194 goto out; 1195 } 1196 ret = rman_release_resource(r); 1197 } else 1198 ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r); 1199 1200 out: 1201 ACPI_SERIAL_END(acpi); 1202 return (ret); 1203 } 1204 1205 static void 1206 acpi_delete_resource(device_t bus, device_t child, int type, int rid) 1207 { 1208 struct resource_list *rl; 1209 1210 rl = acpi_get_rlist(bus, child); 1211 resource_list_delete(rl, type, rid); 1212 } 1213 1214 /* Allocate an IO port or memory resource, given its GAS. */ 1215 int 1216 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas, 1217 struct resource **res, u_int flags) 1218 { 1219 int error, res_type; 1220 1221 error = ENOMEM; 1222 if (type == NULL || rid == NULL || gas == NULL || res == NULL) 1223 return (EINVAL); 1224 1225 /* We only support memory and IO spaces. */ 1226 switch (gas->SpaceId) { 1227 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 1228 res_type = SYS_RES_MEMORY; 1229 break; 1230 case ACPI_ADR_SPACE_SYSTEM_IO: 1231 res_type = SYS_RES_IOPORT; 1232 break; 1233 default: 1234 return (EOPNOTSUPP); 1235 } 1236 1237 /* 1238 * If the register width is less than 8, assume the BIOS author means 1239 * it is a bit field and just allocate a byte. 1240 */ 1241 if (gas->BitWidth && gas->BitWidth < 8) 1242 gas->BitWidth = 8; 1243 1244 /* Validate the address after we're sure we support the space. */ 1245 if (gas->Address == 0 || gas->BitWidth == 0) 1246 return (EINVAL); 1247 1248 bus_set_resource(dev, res_type, *rid, gas->Address, 1249 gas->BitWidth / 8, -1); 1250 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags); 1251 if (*res != NULL) { 1252 *type = res_type; 1253 error = 0; 1254 } else 1255 bus_delete_resource(dev, res_type, *rid); 1256 1257 return (error); 1258 } 1259 1260 ACPI_STATUS 1261 acpi_eval_osc(device_t dev, ACPI_HANDLE handle, const char *uuidstr, 1262 int revision, uint32_t *buf, int count) 1263 { 1264 ACPI_BUFFER retbuf = { ACPI_ALLOCATE_BUFFER, NULL }; 1265 ACPI_OBJECT_LIST arglist; 1266 ACPI_OBJECT arg[4]; 1267 ACPI_OBJECT *retobj; 1268 ACPI_STATUS status; 1269 struct uuid uuid; 1270 uint32_t error; 1271 uint8_t oscuuid[ACPI_UUID_LENGTH]; 1272 int i; 1273 1274 if (parse_uuid(uuidstr, &uuid) != 0) 1275 return (AE_ERROR); 1276 le_uuid_enc(oscuuid, &uuid); 1277 1278 arglist.Pointer = arg; 1279 arglist.Count = 4; 1280 arg[0].Type = ACPI_TYPE_BUFFER; 1281 arg[0].Buffer.Length = ACPI_UUID_LENGTH; 1282 arg[0].Buffer.Pointer = oscuuid; /* UUID */ 1283 arg[1].Type = ACPI_TYPE_INTEGER; 1284 arg[1].Integer.Value = revision; /* revision */ 1285 arg[2].Type = ACPI_TYPE_INTEGER; 1286 arg[2].Integer.Value = count; /* # of cap integers */ 1287 arg[3].Type = ACPI_TYPE_BUFFER; 1288 arg[3].Buffer.Length = count * sizeof(uint32_t); /* capabilities buffer */ 1289 arg[3].Buffer.Pointer = (uint8_t *)buf; 1290 1291 status = AcpiEvaluateObject(handle, "_OSC", &arglist, &retbuf); 1292 if (ACPI_FAILURE(status)) 1293 goto done; 1294 retobj = retbuf.Pointer; 1295 error = ((uint32_t *)retobj->Buffer.Pointer)[0] & ACPI_OSC_ERRMASK; 1296 if (error == 0) 1297 goto done; 1298 status = AE_ERROR; 1299 if (error & ACPI_OSCERR_FAILURE) 1300 device_printf(dev, "_OSC unable to process request\n"); 1301 if (error & ACPI_OSCERR_BADUUID) 1302 device_printf(dev, "_OSC unrecognized UUID (%s)\n", uuidstr); 1303 if (error & ACPI_OSCERR_BADREV) 1304 device_printf(dev, "_OSC unrecognized revision ID (%d)\n", revision); 1305 if (error & ACPI_OSCERR_CAPSMASKED) { 1306 if ((buf[0] & ACPI_OSC_QUERY_SUPPORT) == 0) { 1307 for (i = 1; i < count; i++) { 1308 device_printf(dev, 1309 "_OSC capabilities have been masked: buf[%d]:%#x\n", 1310 i, buf[i] & ~((uint32_t *)retobj->Buffer.Pointer)[i]); 1311 } 1312 status = AE_SUPPORT; 1313 } else { 1314 status = AE_OK; 1315 } 1316 } 1317 if (buf[0] & ACPI_OSC_QUERY_SUPPORT) { 1318 for (i = 0; i < count; i++) 1319 buf[i] = ((uint32_t *)retobj->Buffer.Pointer)[i]; 1320 } 1321 1322 done: 1323 if (retbuf.Pointer != NULL) 1324 AcpiOsFree(retbuf.Pointer); 1325 return (status); 1326 } 1327 1328 /* Probe _HID and _CID for compatible ISA PNP ids. */ 1329 static uint32_t 1330 acpi_isa_get_logicalid(device_t dev) 1331 { 1332 ACPI_DEVICE_INFO *devinfo; 1333 ACPI_HANDLE h; 1334 uint32_t pnpid; 1335 1336 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1337 1338 devinfo = NULL; 1339 pnpid = 0; 1340 1341 /* Fetch and validate the HID. */ 1342 if ((h = acpi_get_handle(dev)) == NULL || 1343 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 1344 goto out; 1345 1346 if ((devinfo->Valid & ACPI_VALID_HID) != 0) 1347 pnpid = PNP_EISAID(devinfo->HardwareId.String); 1348 1349 out: 1350 if (devinfo) 1351 AcpiOsFree(devinfo); 1352 return_VALUE (pnpid); 1353 } 1354 1355 static int 1356 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count) 1357 { 1358 ACPI_DEVICE_INFO *devinfo; 1359 ACPI_HANDLE h; 1360 uint32_t *pnpid; 1361 int valid, i; 1362 1363 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1364 1365 devinfo = NULL; 1366 pnpid = cids; 1367 valid = 0; 1368 1369 /* Fetch and validate the CID */ 1370 if ((h = acpi_get_handle(dev)) == NULL || 1371 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)) || 1372 (devinfo->Valid & ACPI_VALID_CID) == 0) 1373 goto out; 1374 1375 if (devinfo->CompatibleIdList.Count < count) 1376 count = devinfo->CompatibleIdList.Count; 1377 for (i = 0; i < count; i++) { 1378 if (strncmp(devinfo->CompatibleIdList.Ids[i].String, "PNP", 3) != 0) 1379 continue; 1380 *pnpid++ = PNP_EISAID(devinfo->CompatibleIdList.Ids[i].String); 1381 valid++; 1382 } 1383 1384 out: 1385 if (devinfo) 1386 AcpiOsFree(devinfo); 1387 return_VALUE (valid); 1388 } 1389 1390 static char * 1391 acpi_device_id_probe(device_t bus, device_t dev, char **ids) 1392 { 1393 ACPI_HANDLE h; 1394 int i; 1395 1396 h = acpi_get_handle(dev); 1397 if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE) 1398 return (NULL); 1399 1400 /* Try to match one of the array of IDs with a HID or CID. */ 1401 for (i = 0; ids[i] != NULL; i++) { 1402 if (acpi_MatchHid(h, ids[i])) 1403 return (ids[i]); 1404 } 1405 return (NULL); 1406 } 1407 1408 static ACPI_STATUS 1409 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname, 1410 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret) 1411 { 1412 ACPI_HANDLE h; 1413 1414 if (dev == NULL) 1415 h = ACPI_ROOT_OBJECT; 1416 else if ((h = acpi_get_handle(dev)) == NULL) 1417 return (AE_BAD_PARAMETER); 1418 return (AcpiEvaluateObject(h, pathname, parameters, ret)); 1419 } 1420 1421 static int 1422 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate) 1423 { 1424 struct acpi_softc *sc; 1425 ACPI_HANDLE handle; 1426 ACPI_STATUS status; 1427 char sxd[8]; 1428 int error; 1429 1430 sc = device_get_softc(bus); 1431 handle = acpi_get_handle(dev); 1432 1433 /* 1434 * XXX If we find these devices, don't try to power them down. 1435 * The serial and IRDA ports on my T23 hang the system when 1436 * set to D3 and it appears that such legacy devices may 1437 * need special handling in their drivers. 1438 */ 1439 if (handle == NULL || 1440 acpi_MatchHid(handle, "PNP0500") || 1441 acpi_MatchHid(handle, "PNP0501") || 1442 acpi_MatchHid(handle, "PNP0502") || 1443 acpi_MatchHid(handle, "PNP0510") || 1444 acpi_MatchHid(handle, "PNP0511")) 1445 return (ENXIO); 1446 1447 /* 1448 * Override next state with the value from _SxD, if present. If no 1449 * dstate argument was provided, don't fetch the return value. 1450 */ 1451 ksnprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate); 1452 if (dstate) 1453 status = acpi_GetInteger(handle, sxd, dstate); 1454 else 1455 status = AcpiEvaluateObject(handle, sxd, NULL, NULL); 1456 1457 switch (status) { 1458 case AE_OK: 1459 error = 0; 1460 break; 1461 case AE_NOT_FOUND: 1462 error = ESRCH; 1463 break; 1464 default: 1465 error = ENXIO; 1466 break; 1467 } 1468 1469 return (error); 1470 } 1471 1472 /* Callback arg for our implementation of walking the namespace. */ 1473 struct acpi_device_scan_ctx { 1474 acpi_scan_cb_t user_fn; 1475 void *arg; 1476 ACPI_HANDLE parent; 1477 }; 1478 1479 static ACPI_STATUS 1480 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval) 1481 { 1482 struct acpi_device_scan_ctx *ctx; 1483 device_t dev, old_dev; 1484 ACPI_STATUS status; 1485 ACPI_OBJECT_TYPE type; 1486 1487 /* 1488 * Skip this device if we think we'll have trouble with it or it is 1489 * the parent where the scan began. 1490 */ 1491 ctx = (struct acpi_device_scan_ctx *)arg; 1492 if (acpi_avoid(h) || h == ctx->parent) 1493 return (AE_OK); 1494 1495 /* If this is not a valid device type (e.g., a method), skip it. */ 1496 if (ACPI_FAILURE(AcpiGetType(h, &type))) 1497 return (AE_OK); 1498 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR && 1499 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER) 1500 return (AE_OK); 1501 1502 /* 1503 * Call the user function with the current device. If it is unchanged 1504 * afterwards, return. Otherwise, we update the handle to the new dev. 1505 */ 1506 old_dev = acpi_get_device(h); 1507 dev = old_dev; 1508 status = ctx->user_fn(h, &dev, level, ctx->arg); 1509 if (ACPI_FAILURE(status) || old_dev == dev) 1510 return (status); 1511 1512 /* Remove the old child and its connection to the handle. */ 1513 if (old_dev != NULL) { 1514 device_delete_child(device_get_parent(old_dev), old_dev); 1515 AcpiDetachData(h, acpi_fake_objhandler); 1516 } 1517 1518 /* Recreate the handle association if the user created a device. */ 1519 if (dev != NULL) 1520 AcpiAttachData(h, acpi_fake_objhandler, dev); 1521 1522 return (AE_OK); 1523 } 1524 1525 static ACPI_STATUS 1526 acpi_device_scan_children(device_t bus, device_t dev, int max_depth, 1527 acpi_scan_cb_t user_fn, void *arg) 1528 { 1529 ACPI_HANDLE h; 1530 struct acpi_device_scan_ctx ctx; 1531 1532 if (acpi_disabled("children")) 1533 return (AE_OK); 1534 1535 if (dev == NULL) 1536 h = ACPI_ROOT_OBJECT; 1537 else if ((h = acpi_get_handle(dev)) == NULL) 1538 return (AE_BAD_PARAMETER); 1539 ctx.user_fn = user_fn; 1540 ctx.arg = arg; 1541 ctx.parent = h; 1542 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth, 1543 acpi_device_scan_cb, NULL, &ctx, NULL)); 1544 } 1545 1546 /* 1547 * Even though ACPI devices are not PCI, we use the PCI approach for setting 1548 * device power states since it's close enough to ACPI. 1549 */ 1550 static int 1551 acpi_set_powerstate_method(device_t bus, device_t child, int state) 1552 { 1553 ACPI_HANDLE h; 1554 ACPI_STATUS status; 1555 int error; 1556 1557 error = 0; 1558 h = acpi_get_handle(child); 1559 if (state < ACPI_STATE_D0 || state > ACPI_STATE_D3) 1560 return (EINVAL); 1561 if (h == NULL) 1562 return (0); 1563 1564 /* Ignore errors if the power methods aren't present. */ 1565 status = acpi_pwr_switch_consumer(h, state); 1566 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND 1567 && status != AE_BAD_PARAMETER) 1568 device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n", 1569 state, acpi_name(h), AcpiFormatException(status)); 1570 1571 return (error); 1572 } 1573 1574 static int 1575 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids) 1576 { 1577 int result, cid_count, i; 1578 uint32_t lid, cids[8]; 1579 1580 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1581 1582 /* 1583 * ISA-style drivers attached to ACPI may persist and 1584 * probe manually if we return ENOENT. We never want 1585 * that to happen, so don't ever return it. 1586 */ 1587 result = ENXIO; 1588 1589 /* Scan the supplied IDs for a match */ 1590 lid = acpi_isa_get_logicalid(child); 1591 cid_count = acpi_isa_get_compatid(child, cids, 8); 1592 while (ids && ids->ip_id) { 1593 if (lid == ids->ip_id) { 1594 result = 0; 1595 goto out; 1596 } 1597 for (i = 0; i < cid_count; i++) { 1598 if (cids[i] == ids->ip_id) { 1599 result = 0; 1600 goto out; 1601 } 1602 } 1603 ids++; 1604 } 1605 1606 out: 1607 if (result == 0 && ids->ip_desc) 1608 device_set_desc(child, ids->ip_desc); 1609 1610 return_VALUE (result); 1611 } 1612 1613 /* 1614 * Look for a MCFG table. If it is present, use the settings for 1615 * domain (segment) 0 to setup PCI config space access via the memory 1616 * map. 1617 */ 1618 static void 1619 acpi_enable_pcie(void) 1620 { 1621 ACPI_TABLE_HEADER *hdr; 1622 ACPI_MCFG_ALLOCATION *alloc, *end; 1623 ACPI_STATUS status; 1624 1625 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr); 1626 if (ACPI_FAILURE(status)) 1627 return; 1628 1629 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length); 1630 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1); 1631 while (alloc < end) { 1632 if (alloc->PciSegment == 0) { 1633 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber, 1634 alloc->EndBusNumber); 1635 return; 1636 } 1637 alloc++; 1638 } 1639 } 1640 1641 /* 1642 * Scan all of the ACPI namespace and attach child devices. 1643 * 1644 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and 1645 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec. 1646 * However, in violation of the spec, some systems place their PCI link 1647 * devices in \, so we have to walk the whole namespace. We check the 1648 * type of namespace nodes, so this should be ok. 1649 */ 1650 static void 1651 acpi_probe_children(device_t bus) 1652 { 1653 device_t *children; 1654 int cnt; 1655 1656 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1657 1658 /* 1659 * Scan the namespace and insert placeholders for all the devices that 1660 * we find. We also probe/attach any early devices. 1661 * 1662 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because 1663 * we want to create nodes for all devices, not just those that are 1664 * currently present. (This assumes that we don't want to create/remove 1665 * devices as they appear, which might be smarter.) 1666 */ 1667 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n")); 1668 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, 1669 acpi_probe_child, NULL, bus, NULL); 1670 /* This gets us all the children that we added from the ACPI namespace. */ 1671 device_get_children(bus, &children, &cnt); 1672 1673 /* Pre-allocate resources for our rman from any sysresource devices. */ 1674 acpi_sysres_alloc(bus); 1675 /* Create any static children by calling device identify methods. */ 1676 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n")); 1677 bus_generic_probe(bus); 1678 1679 /* Probe/attach all children, created staticly and from the namespace. */ 1680 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n")); 1681 bus_generic_attach_gpri(bus, KOBJ_GPRI_ACPI+2); 1682 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n")); 1683 bus_generic_attach_gpri(bus, KOBJ_GPRI_ACPI+1); 1684 /* Re-check device presence for previously disabled devices. */ 1685 acpi_reprobe_children(bus, children, cnt); 1686 kfree(children, M_TEMP); 1687 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "third bus_generic_attach\n")); 1688 bus_generic_attach_gpri(bus, KOBJ_GPRI_ACPI); 1689 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "fourth bus_generic_attach\n")); 1690 bus_generic_attach_gpri(bus, KOBJ_GPRI_ACPI); 1691 1692 /* 1693 * Some of these children may have attached others as part of their attach 1694 * process (eg. the root PCI bus driver), so rescan. 1695 */ 1696 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "fifth bus_generic_attach\n")); 1697 bus_generic_attach(bus); 1698 1699 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "sixth bus_generic_attach\n")); 1700 bus_generic_attach(bus); 1701 1702 /* Attach wake sysctls. */ 1703 acpi_wake_sysctl_walk(bus); 1704 1705 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n")); 1706 return_VOID; 1707 } 1708 1709 /* 1710 * Determine the probe order for a given device. 1711 */ 1712 static void 1713 acpi_probe_order(ACPI_HANDLE handle, int *order) 1714 { 1715 ACPI_OBJECT_TYPE type; 1716 1717 /* 1718 * 1. I/O port and memory system resource holders 1719 * 2. Embedded controllers (to handle early accesses) 1720 * 3. PCI Link Devices 1721 * 100000. CPUs 1722 */ 1723 AcpiGetType(handle, &type); 1724 if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02")) 1725 *order = 1; 1726 else if (acpi_MatchHid(handle, "PNP0C09")) 1727 *order = 2; 1728 else if (acpi_MatchHid(handle, "PNP0C0F")) 1729 *order = 3; 1730 else if (type == ACPI_TYPE_PROCESSOR) 1731 *order = 100000; 1732 } 1733 1734 /* 1735 * Flag a device as disabled, because it isn't present according to the 1736 * _STA method. We set the recheck instance-variable, to make sure that we 1737 * recheck the device presence at a later point. 1738 */ 1739 static void 1740 acpi_disable_not_present(device_t child) 1741 { 1742 device_disable(child); 1743 acpi_set_recheck(child, 1); 1744 } 1745 1746 /* 1747 * This rechecks the device presence for all the devices which were disabled 1748 * using acpi_disable_not_present(). 1749 */ 1750 static void 1751 acpi_reprobe_children(device_t bus, device_t *children, int cnt) 1752 { 1753 int i; 1754 1755 for (i = 0; i < cnt; i++) { 1756 device_t dev = children[i]; 1757 1758 if (device_is_enabled(dev)) 1759 continue; 1760 1761 if (acpi_get_recheck(dev)) { 1762 if (acpi_DeviceIsPresent(dev)) { 1763 acpi_set_recheck(dev, 0); 1764 device_enable(dev); 1765 /* 1766 * Currently we parse the resources for every 1767 * device at the first time, when we see 1768 * that it is present. 1769 */ 1770 acpi_parse_resources(dev, acpi_get_handle(dev), 1771 &acpi_res_parse_set, NULL); 1772 } 1773 } 1774 } 1775 } 1776 1777 /* 1778 * Evaluate a child device and determine whether we might attach a device to 1779 * it. 1780 */ 1781 static ACPI_STATUS 1782 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 1783 { 1784 struct acpi_prw_data prw; 1785 ACPI_OBJECT_TYPE type; 1786 ACPI_HANDLE h; 1787 device_t bus, child; 1788 int order; 1789 char *handle_str; 1790 1791 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1792 1793 if (acpi_disabled("children")) 1794 return_ACPI_STATUS (AE_OK); 1795 1796 /* Skip this device if we think we'll have trouble with it. */ 1797 if (acpi_avoid(handle)) 1798 return_ACPI_STATUS (AE_OK); 1799 1800 bus = (device_t)context; 1801 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) { 1802 handle_str = acpi_name(handle); 1803 switch (type) { 1804 case ACPI_TYPE_DEVICE: 1805 /* 1806 * Since we scan from \, be sure to skip system scope objects. 1807 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around 1808 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run 1809 * during the intialization and \_TZ_ is to support Notify() on it. 1810 */ 1811 if (strcmp(handle_str, "\\_SB_") == 0 || 1812 strcmp(handle_str, "\\_TZ_") == 0) 1813 break; 1814 1815 if (acpi_parse_prw(handle, &prw) == 0) 1816 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit); 1817 1818 /* FALLTHROUGH */ 1819 case ACPI_TYPE_PROCESSOR: 1820 case ACPI_TYPE_THERMAL: 1821 case ACPI_TYPE_POWER: 1822 /* 1823 * Create a placeholder device for this node. Sort the 1824 * placeholder so that the probe/attach passes will run 1825 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER 1826 * are reserved for special objects (i.e., system 1827 * resources). CPU devices have a very high order to 1828 * ensure they are probed after other devices. 1829 */ 1830 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str)); 1831 order = level * 10 + 100; 1832 acpi_probe_order(handle, &order); 1833 child = BUS_ADD_CHILD(bus, bus, order, NULL, -1); 1834 if (child == NULL) 1835 break; 1836 1837 /* Associate the handle with the device_t and vice versa. */ 1838 acpi_set_handle(child, handle); 1839 AcpiAttachData(handle, acpi_fake_objhandler, child); 1840 1841 /* 1842 * Check that the device is present. If it's not present, 1843 * leave it disabled (so that we have a device_t attached to 1844 * the handle, but we don't probe it). 1845 * 1846 * XXX PCI link devices sometimes report "present" but not 1847 * "functional" (i.e. if disabled). Go ahead and probe them 1848 * anyway since we may enable them later. 1849 */ 1850 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) { 1851 /* Never disable PCI link devices. */ 1852 if (acpi_MatchHid(handle, "PNP0C0F")) 1853 break; 1854 /* 1855 * Docking stations should remain enabled since the system 1856 * may be undocked at boot. 1857 */ 1858 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h))) 1859 break; 1860 1861 acpi_disable_not_present(child); 1862 break; 1863 } 1864 1865 /* 1866 * Get the device's resource settings and attach them. 1867 * Note that if the device has _PRS but no _CRS, we need 1868 * to decide when it's appropriate to try to configure the 1869 * device. Ignore the return value here; it's OK for the 1870 * device not to have any resources. 1871 */ 1872 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL); 1873 break; 1874 } 1875 } 1876 1877 return_ACPI_STATUS (AE_OK); 1878 } 1879 1880 /* 1881 * AcpiAttachData() requires an object handler but never uses it. This is a 1882 * placeholder object handler so we can store a device_t in an ACPI_HANDLE. 1883 */ 1884 void 1885 acpi_fake_objhandler(ACPI_HANDLE h, void *data) 1886 { 1887 } 1888 1889 static void 1890 acpi_shutdown_final(void *arg, int howto) 1891 { 1892 struct acpi_softc *sc; 1893 ACPI_STATUS status; 1894 1895 /* 1896 * XXX Shutdown code should only run on the BSP (cpuid 0). 1897 * Some chipsets do not power off the system correctly if called from 1898 * an AP. 1899 */ 1900 sc = arg; 1901 if ((howto & RB_POWEROFF) != 0) { 1902 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1903 if (ACPI_FAILURE(status)) { 1904 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 1905 AcpiFormatException(status)); 1906 return; 1907 } 1908 device_printf(sc->acpi_dev, "Powering system off\n"); 1909 ACPI_DISABLE_IRQS(); 1910 status = AcpiEnterSleepState(ACPI_STATE_S5); 1911 if (ACPI_FAILURE(status)) { 1912 device_printf(sc->acpi_dev, "power-off failed - %s\n", 1913 AcpiFormatException(status)); 1914 } else { 1915 DELAY(1000000); 1916 device_printf(sc->acpi_dev, "power-off failed - timeout\n"); 1917 } 1918 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) { 1919 /* Reboot using the reset register. */ 1920 status = AcpiReset(); 1921 if (ACPI_FAILURE(status)) { 1922 if (status != AE_NOT_EXIST) 1923 device_printf(sc->acpi_dev, "reset failed - %s\n", 1924 AcpiFormatException(status)); 1925 } else { 1926 DELAY(1000000); 1927 device_printf(sc->acpi_dev, "reset failed - timeout\n"); 1928 } 1929 } else if (sc->acpi_do_disable && panicstr == NULL) { 1930 /* 1931 * Only disable ACPI if the user requested. On some systems, writing 1932 * the disable value to SMI_CMD hangs the system. 1933 */ 1934 device_printf(sc->acpi_dev, "Shutting down\n"); 1935 AcpiTerminate(); 1936 } 1937 } 1938 1939 static void 1940 acpi_enable_fixed_events(struct acpi_softc *sc) 1941 { 1942 static int first_time = 1; 1943 1944 /* Enable and clear fixed events and install handlers. */ 1945 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) { 1946 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1947 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON, 1948 acpi_event_power_button_sleep, sc); 1949 if (first_time) 1950 device_printf(sc->acpi_dev, "Power Button (fixed)\n"); 1951 } 1952 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) { 1953 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1954 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON, 1955 acpi_event_sleep_button_sleep, sc); 1956 if (first_time) 1957 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n"); 1958 } 1959 1960 first_time = 0; 1961 } 1962 1963 /* 1964 * Returns true if the device is actually present and should 1965 * be attached to. This requires the present, enabled, UI-visible 1966 * and diagnostics-passed bits to be set. 1967 */ 1968 BOOLEAN 1969 acpi_DeviceIsPresent(device_t dev) 1970 { 1971 ACPI_HANDLE h; 1972 UINT32 s; 1973 ACPI_STATUS status; 1974 1975 h = acpi_get_handle(dev); 1976 if (h == NULL) 1977 return (FALSE); 1978 status = acpi_GetInteger(h, "_STA", &s); 1979 1980 /* 1981 * If no _STA method or if it failed, then assume that 1982 * the device is present. 1983 */ 1984 if (ACPI_FAILURE(status)) 1985 return (TRUE); 1986 1987 return (ACPI_DEVICE_PRESENT(s) ? TRUE : FALSE); 1988 } 1989 1990 /* 1991 * Returns true if the battery is actually present and inserted. 1992 */ 1993 BOOLEAN 1994 acpi_BatteryIsPresent(device_t dev) 1995 { 1996 ACPI_HANDLE h; 1997 UINT32 s; 1998 ACPI_STATUS status; 1999 2000 h = acpi_get_handle(dev); 2001 if (h == NULL) 2002 return (FALSE); 2003 status = acpi_GetInteger(h, "_STA", &s); 2004 2005 /* 2006 * If no _STA method or if it failed, then assume that 2007 * the device is present. 2008 */ 2009 if (ACPI_FAILURE(status)) 2010 return (TRUE); 2011 2012 return (ACPI_BATTERY_PRESENT(s) ? TRUE : FALSE); 2013 } 2014 2015 /* 2016 * Match a HID string against a handle 2017 */ 2018 BOOLEAN 2019 acpi_MatchHid(ACPI_HANDLE h, const char *hid) 2020 { 2021 ACPI_DEVICE_INFO *devinfo; 2022 int ret, i; 2023 2024 ret = FALSE; 2025 if (hid == NULL || h == NULL || 2026 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 2027 return (ret); 2028 2029 if ((devinfo->Valid & ACPI_VALID_HID) != 0 && 2030 strcmp(hid, devinfo->HardwareId.String) == 0) 2031 ret = TRUE; 2032 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) { 2033 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) { 2034 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) { 2035 ret = TRUE; 2036 break; 2037 } 2038 } 2039 } 2040 2041 AcpiOsFree(devinfo); 2042 return (ret); 2043 } 2044 2045 /* 2046 * Match a UID string against a handle 2047 */ 2048 BOOLEAN 2049 acpi_MatchUid(ACPI_HANDLE h, const char *uid) 2050 { 2051 ACPI_DEVICE_INFO *devinfo; 2052 int ret; 2053 2054 ret = FALSE; 2055 if (uid == NULL || h == NULL || 2056 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 2057 return (ret); 2058 2059 if ((devinfo->Valid & ACPI_VALID_UID) != 0 && 2060 strcmp(uid, devinfo->UniqueId.String) == 0) 2061 ret = TRUE; 2062 2063 AcpiOsFree(devinfo); 2064 return (ret); 2065 } 2066 2067 /* 2068 * Return the handle of a named object within our scope, ie. that of (parent) 2069 * or one if its parents. 2070 */ 2071 ACPI_STATUS 2072 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result) 2073 { 2074 ACPI_HANDLE r; 2075 ACPI_STATUS status; 2076 2077 /* Walk back up the tree to the root */ 2078 for (;;) { 2079 status = AcpiGetHandle(parent, path, &r); 2080 if (ACPI_SUCCESS(status)) { 2081 *result = r; 2082 return (AE_OK); 2083 } 2084 /* XXX Return error here? */ 2085 if (status != AE_NOT_FOUND) 2086 return (AE_OK); 2087 if (ACPI_FAILURE(AcpiGetParent(parent, &r))) 2088 return (AE_NOT_FOUND); 2089 parent = r; 2090 } 2091 } 2092 2093 /* 2094 * Allocate a buffer with a preset data size. 2095 */ 2096 ACPI_BUFFER * 2097 acpi_AllocBuffer(int size) 2098 { 2099 ACPI_BUFFER *buf; 2100 2101 if ((buf = kmalloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL) 2102 return (NULL); 2103 buf->Length = size; 2104 buf->Pointer = (void *)(buf + 1); 2105 return (buf); 2106 } 2107 2108 ACPI_STATUS 2109 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number) 2110 { 2111 ACPI_OBJECT arg1; 2112 ACPI_OBJECT_LIST args; 2113 2114 arg1.Type = ACPI_TYPE_INTEGER; 2115 arg1.Integer.Value = number; 2116 args.Count = 1; 2117 args.Pointer = &arg1; 2118 2119 return (AcpiEvaluateObject(handle, path, &args, NULL)); 2120 } 2121 2122 /* 2123 * Evaluate a path that should return an integer. 2124 */ 2125 ACPI_STATUS 2126 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number) 2127 { 2128 ACPI_STATUS status; 2129 ACPI_BUFFER buf; 2130 ACPI_OBJECT param; 2131 2132 if (handle == NULL) 2133 handle = ACPI_ROOT_OBJECT; 2134 2135 /* 2136 * Assume that what we've been pointed at is an Integer object, or 2137 * a method that will return an Integer. 2138 */ 2139 buf.Pointer = ¶m; 2140 buf.Length = sizeof(param); 2141 status = AcpiEvaluateObject(handle, path, NULL, &buf); 2142 if (ACPI_SUCCESS(status)) { 2143 if (param.Type == ACPI_TYPE_INTEGER) 2144 *number = param.Integer.Value; 2145 else 2146 status = AE_TYPE; 2147 } 2148 2149 /* 2150 * In some applications, a method that's expected to return an Integer 2151 * may instead return a Buffer (probably to simplify some internal 2152 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer, 2153 * convert it into an Integer as best we can. 2154 * 2155 * This is a hack. 2156 */ 2157 if (status == AE_BUFFER_OVERFLOW) { 2158 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) { 2159 status = AE_NO_MEMORY; 2160 } else { 2161 status = AcpiEvaluateObject(handle, path, NULL, &buf); 2162 if (ACPI_SUCCESS(status)) 2163 status = acpi_ConvertBufferToInteger(&buf, number); 2164 AcpiOsFree(buf.Pointer); 2165 } 2166 } 2167 return (status); 2168 } 2169 2170 ACPI_STATUS 2171 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number) 2172 { 2173 ACPI_OBJECT *p; 2174 UINT8 *val; 2175 int i; 2176 2177 p = (ACPI_OBJECT *)bufp->Pointer; 2178 if (p->Type == ACPI_TYPE_INTEGER) { 2179 *number = p->Integer.Value; 2180 return (AE_OK); 2181 } 2182 if (p->Type != ACPI_TYPE_BUFFER) 2183 return (AE_TYPE); 2184 if (p->Buffer.Length > sizeof(int)) 2185 return (AE_BAD_DATA); 2186 2187 *number = 0; 2188 val = p->Buffer.Pointer; 2189 for (i = 0; i < p->Buffer.Length; i++) 2190 *number += val[i] << (i * 8); 2191 return (AE_OK); 2192 } 2193 2194 /* 2195 * Iterate over the elements of an a package object, calling the supplied 2196 * function for each element. 2197 * 2198 * XXX possible enhancement might be to abort traversal on error. 2199 */ 2200 ACPI_STATUS 2201 acpi_ForeachPackageObject(ACPI_OBJECT *pkg, 2202 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg) 2203 { 2204 ACPI_OBJECT *comp; 2205 int i; 2206 2207 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE) 2208 return (AE_BAD_PARAMETER); 2209 2210 /* Iterate over components */ 2211 i = 0; 2212 comp = pkg->Package.Elements; 2213 for (; i < pkg->Package.Count; i++, comp++) 2214 func(comp, arg); 2215 2216 return (AE_OK); 2217 } 2218 2219 /* 2220 * Find the (index)th resource object in a set. 2221 */ 2222 ACPI_STATUS 2223 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp) 2224 { 2225 ACPI_RESOURCE *rp; 2226 int i; 2227 2228 rp = (ACPI_RESOURCE *)buf->Pointer; 2229 i = index; 2230 while (i-- > 0) { 2231 /* Range check */ 2232 if (rp > (ACPI_RESOURCE *)((uint8_t *)buf->Pointer + buf->Length)) 2233 return (AE_BAD_PARAMETER); 2234 2235 /* Check for terminator */ 2236 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0) 2237 return (AE_NOT_FOUND); 2238 rp = ACPI_NEXT_RESOURCE(rp); 2239 } 2240 if (resp != NULL) 2241 *resp = rp; 2242 2243 return (AE_OK); 2244 } 2245 2246 /* 2247 * Append an ACPI_RESOURCE to an ACPI_BUFFER. 2248 * 2249 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER 2250 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible 2251 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of 2252 * resources. 2253 */ 2254 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512 2255 2256 ACPI_STATUS 2257 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res) 2258 { 2259 ACPI_RESOURCE *rp; 2260 void *newp; 2261 2262 /* Initialise the buffer if necessary. */ 2263 if (buf->Pointer == NULL) { 2264 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE; 2265 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL) 2266 return (AE_NO_MEMORY); 2267 rp = (ACPI_RESOURCE *)buf->Pointer; 2268 rp->Type = ACPI_RESOURCE_TYPE_END_TAG; 2269 rp->Length = ACPI_RS_SIZE_MIN; 2270 } 2271 if (res == NULL) 2272 return (AE_OK); 2273 2274 /* 2275 * Scan the current buffer looking for the terminator. 2276 * This will either find the terminator or hit the end 2277 * of the buffer and return an error. 2278 */ 2279 rp = (ACPI_RESOURCE *)buf->Pointer; 2280 for (;;) { 2281 /* Range check, don't go outside the buffer */ 2282 if (rp >= (ACPI_RESOURCE *)((uint8_t *)buf->Pointer + buf->Length)) 2283 return (AE_BAD_PARAMETER); 2284 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0) 2285 break; 2286 rp = ACPI_NEXT_RESOURCE(rp); 2287 } 2288 2289 /* 2290 * Check the size of the buffer and expand if required. 2291 * 2292 * Required size is: 2293 * size of existing resources before terminator + 2294 * size of new resource and header + 2295 * size of terminator. 2296 * 2297 * Note that this loop should really only run once, unless 2298 * for some reason we are stuffing a *really* huge resource. 2299 */ 2300 while ((((uint8_t *)rp - (uint8_t *)buf->Pointer) + 2301 res->Length + ACPI_RS_SIZE_NO_DATA + 2302 ACPI_RS_SIZE_MIN) >= buf->Length) { 2303 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL) 2304 return (AE_NO_MEMORY); 2305 bcopy(buf->Pointer, newp, buf->Length); 2306 rp = (ACPI_RESOURCE *)((uint8_t *)newp + 2307 ((uint8_t *)rp - (uint8_t *)buf->Pointer)); 2308 AcpiOsFree(buf->Pointer); 2309 buf->Pointer = newp; 2310 buf->Length += buf->Length; 2311 } 2312 2313 /* Insert the new resource. */ 2314 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA); 2315 2316 /* And add the terminator. */ 2317 rp = ACPI_NEXT_RESOURCE(rp); 2318 rp->Type = ACPI_RESOURCE_TYPE_END_TAG; 2319 rp->Length = ACPI_RS_SIZE_MIN; 2320 2321 return (AE_OK); 2322 } 2323 2324 /* 2325 * Set interrupt model. 2326 */ 2327 ACPI_STATUS 2328 acpi_SetIntrModel(int model) 2329 { 2330 2331 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model)); 2332 } 2333 2334 /* 2335 * DEPRECATED. This interface has serious deficiencies and will be 2336 * removed. 2337 * 2338 * Immediately enter the sleep state. In the old model, acpiconf(8) ran 2339 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this. 2340 */ 2341 ACPI_STATUS 2342 acpi_SetSleepState(struct acpi_softc *sc, int state) 2343 { 2344 static int once; 2345 2346 if (!once) { 2347 device_printf(sc->acpi_dev, 2348 "warning: acpi_SetSleepState() deprecated, need to update your software\n"); 2349 once = 1; 2350 } 2351 return (acpi_EnterSleepState(sc, state)); 2352 } 2353 2354 static void 2355 acpi_sleep_force(void *arg) 2356 { 2357 struct acpi_softc *sc; 2358 2359 sc = arg; 2360 device_printf(sc->acpi_dev, 2361 "suspend request timed out, forcing sleep now\n"); 2362 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) 2363 device_printf(sc->acpi_dev, "force sleep state S%d failed\n", 2364 sc->acpi_next_sstate); 2365 } 2366 2367 /* 2368 * Request that the system enter the given suspend state. All /dev/apm 2369 * devices and devd(8) will be notified. Userland then has a chance to 2370 * save state and acknowledge the request. The system sleeps once all 2371 * acks are in. 2372 */ 2373 int 2374 acpi_ReqSleepState(struct acpi_softc *sc, int state) 2375 { 2376 #ifdef notyet 2377 struct apm_clone_data *clone; 2378 #endif 2379 2380 if (state < ACPI_STATE_S1 || state > ACPI_STATE_S5) 2381 return (EINVAL); 2382 2383 /* S5 (soft-off) should be entered directly with no waiting. */ 2384 if (state == ACPI_STATE_S5) { 2385 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, state))) 2386 return (0); 2387 else 2388 return (ENXIO); 2389 } 2390 2391 /* This platform does not support acpi suspend/resume. */ 2392 return (EOPNOTSUPP); 2393 2394 /* If a suspend request is already in progress, just return. */ 2395 ACPI_LOCK(acpi); 2396 if (sc->acpi_next_sstate != 0) { 2397 ACPI_UNLOCK(acpi); 2398 return (0); 2399 } 2400 2401 /* Record the pending state and notify all apm devices. */ 2402 sc->acpi_next_sstate = state; 2403 #if 0 2404 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) { 2405 clone->notify_status = APM_EV_NONE; 2406 if ((clone->flags & ACPI_EVF_DEVD) == 0) { 2407 KNOTE(&clone->sel_read.si_note, 0); 2408 } 2409 } 2410 #endif 2411 2412 /* If devd(8) is not running, immediately enter the sleep state. */ 2413 if (devctl_process_running() == FALSE) { 2414 ACPI_UNLOCK(acpi); 2415 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) { 2416 return (0); 2417 } else { 2418 return (ENXIO); 2419 } 2420 } 2421 2422 /* Now notify devd(8) also. */ 2423 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state); 2424 2425 /* 2426 * Set a timeout to fire if userland doesn't ack the suspend request 2427 * in time. This way we still eventually go to sleep if we were 2428 * overheating or running low on battery, even if userland is hung. 2429 * We cancel this timeout once all userland acks are in or the 2430 * suspend request is aborted. 2431 */ 2432 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc); 2433 ACPI_UNLOCK(acpi); 2434 2435 return (0); 2436 } 2437 2438 /* 2439 * Acknowledge (or reject) a pending sleep state. The caller has 2440 * prepared for suspend and is now ready for it to proceed. If the 2441 * error argument is non-zero, it indicates suspend should be cancelled 2442 * and gives an errno value describing why. Once all votes are in, 2443 * we suspend the system. 2444 */ 2445 int 2446 acpi_AckSleepState(struct apm_clone_data *clone, int error) 2447 { 2448 struct acpi_softc *sc; 2449 int ret, sleeping; 2450 2451 /* This platform does not support acpi suspend/resume. */ 2452 return (EOPNOTSUPP); 2453 2454 /* If no pending sleep state, return an error. */ 2455 ACPI_LOCK(acpi); 2456 sc = clone->acpi_sc; 2457 if (sc->acpi_next_sstate == 0) { 2458 ACPI_UNLOCK(acpi); 2459 return (ENXIO); 2460 } 2461 2462 /* Caller wants to abort suspend process. */ 2463 if (error) { 2464 sc->acpi_next_sstate = 0; 2465 callout_stop(&sc->susp_force_to); 2466 device_printf(sc->acpi_dev, 2467 "listener on %s cancelled the pending suspend\n", 2468 devtoname(clone->cdev)); 2469 ACPI_UNLOCK(acpi); 2470 return (0); 2471 } 2472 2473 /* 2474 * Mark this device as acking the suspend request. Then, walk through 2475 * all devices, seeing if they agree yet. We only count devices that 2476 * are writable since read-only devices couldn't ack the request. 2477 */ 2478 clone->notify_status = APM_EV_ACKED; 2479 sleeping = TRUE; 2480 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) { 2481 if ((clone->flags & ACPI_EVF_WRITE) != 0 && 2482 clone->notify_status != APM_EV_ACKED) { 2483 sleeping = FALSE; 2484 break; 2485 } 2486 } 2487 2488 /* If all devices have voted "yes", we will suspend now. */ 2489 if (sleeping) 2490 callout_stop(&sc->susp_force_to); 2491 ACPI_UNLOCK(acpi); 2492 ret = 0; 2493 if (sleeping) { 2494 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) 2495 ret = ENODEV; 2496 } 2497 2498 return (ret); 2499 } 2500 2501 static void 2502 acpi_sleep_enable(void *arg) 2503 { 2504 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0; 2505 } 2506 2507 enum acpi_sleep_state { 2508 ACPI_SS_NONE, 2509 ACPI_SS_GPE_SET, 2510 ACPI_SS_DEV_SUSPEND, 2511 ACPI_SS_SLP_PREP, 2512 ACPI_SS_SLEPT, 2513 }; 2514 2515 /* 2516 * Enter the desired system sleep state. 2517 * 2518 * Currently we support S1-S5 but S4 is only S4BIOS 2519 */ 2520 static ACPI_STATUS 2521 acpi_EnterSleepState(struct acpi_softc *sc, int state) 2522 { 2523 ACPI_STATUS status; 2524 UINT8 TypeA; 2525 UINT8 TypeB; 2526 enum acpi_sleep_state slp_state; 2527 2528 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 2529 2530 /* Re-entry once we're suspending is not allowed. */ 2531 status = AE_OK; 2532 ACPI_LOCK(acpi); 2533 if (sc->acpi_sleep_disabled) { 2534 ACPI_UNLOCK(acpi); 2535 device_printf(sc->acpi_dev, 2536 "suspend request ignored (not ready yet)\n"); 2537 return (AE_ERROR); 2538 } 2539 sc->acpi_sleep_disabled = 1; 2540 ACPI_UNLOCK(acpi); 2541 2542 /* 2543 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE 2544 * drivers need this. 2545 */ 2546 //get_mplock(); 2547 2548 slp_state = ACPI_SS_NONE; 2549 switch (state) { 2550 case ACPI_STATE_S1: 2551 case ACPI_STATE_S2: 2552 case ACPI_STATE_S3: 2553 case ACPI_STATE_S4: 2554 status = AcpiGetSleepTypeData(state, &TypeA, &TypeB); 2555 if (status == AE_NOT_FOUND) { 2556 device_printf(sc->acpi_dev, 2557 "Sleep state S%d not supported by BIOS\n", state); 2558 break; 2559 } else if (ACPI_FAILURE(status)) { 2560 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n", 2561 AcpiFormatException(status)); 2562 break; 2563 } 2564 2565 sc->acpi_sstate = state; 2566 2567 /* Enable any GPEs as appropriate and requested by the user. */ 2568 acpi_wake_prep_walk(state); 2569 slp_state = ACPI_SS_GPE_SET; 2570 2571 /* 2572 * Inform all devices that we are going to sleep. If at least one 2573 * device fails, DEVICE_SUSPEND() automatically resumes the tree. 2574 * 2575 * XXX Note that a better two-pass approach with a 'veto' pass 2576 * followed by a "real thing" pass would be better, but the current 2577 * bus interface does not provide for this. 2578 */ 2579 if (DEVICE_SUSPEND(root_bus) != 0) { 2580 device_printf(sc->acpi_dev, "device_suspend failed\n"); 2581 break; 2582 } 2583 slp_state = ACPI_SS_DEV_SUSPEND; 2584 2585 /* If testing device suspend only, back out of everything here. */ 2586 if (acpi_susp_bounce) 2587 break; 2588 2589 status = AcpiEnterSleepStatePrep(state); 2590 if (ACPI_FAILURE(status)) { 2591 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 2592 AcpiFormatException(status)); 2593 break; 2594 } 2595 slp_state = ACPI_SS_SLP_PREP; 2596 2597 if (sc->acpi_sleep_delay > 0) 2598 DELAY(sc->acpi_sleep_delay * 1000000); 2599 2600 if (state != ACPI_STATE_S1) { 2601 acpi_sleep_machdep(sc, state); 2602 2603 /* Re-enable ACPI hardware on wakeup from sleep state 4. */ 2604 if (state == ACPI_STATE_S4) 2605 AcpiEnable(); 2606 } else { 2607 ACPI_DISABLE_IRQS(); 2608 status = AcpiEnterSleepState(state); 2609 if (ACPI_FAILURE(status)) { 2610 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", 2611 AcpiFormatException(status)); 2612 break; 2613 } 2614 } 2615 slp_state = ACPI_SS_SLEPT; 2616 break; 2617 case ACPI_STATE_S5: 2618 /* 2619 * Shut down cleanly and power off. This will call us back through the 2620 * shutdown handlers. 2621 */ 2622 shutdown_nice(RB_POWEROFF); 2623 break; 2624 case ACPI_STATE_S0: 2625 default: 2626 status = AE_BAD_PARAMETER; 2627 break; 2628 } 2629 2630 /* 2631 * Back out state according to how far along we got in the suspend 2632 * process. This handles both the error and success cases. 2633 */ 2634 sc->acpi_next_sstate = 0; 2635 if (slp_state >= ACPI_SS_GPE_SET) { 2636 acpi_wake_prep_walk(state); 2637 sc->acpi_sstate = ACPI_STATE_S0; 2638 } 2639 if (slp_state >= ACPI_SS_SLP_PREP) 2640 AcpiLeaveSleepState(state); 2641 if (slp_state >= ACPI_SS_DEV_SUSPEND) 2642 DEVICE_RESUME(root_bus); 2643 if (slp_state >= ACPI_SS_SLEPT) 2644 acpi_enable_fixed_events(sc); 2645 2646 /* Allow another sleep request after a while. */ 2647 /* XXX: needs timeout */ 2648 if (state != ACPI_STATE_S5) 2649 acpi_sleep_enable(sc); 2650 2651 /* Run /etc/rc.resume after we are back. */ 2652 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state); 2653 2654 //rel_mplock(); 2655 2656 return_ACPI_STATUS (status); 2657 } 2658 2659 /* Enable or disable the device's GPE. */ 2660 int 2661 acpi_wake_set_enable(device_t dev, int enable) 2662 { 2663 struct acpi_prw_data prw; 2664 ACPI_STATUS status; 2665 int flags; 2666 2667 /* Make sure the device supports waking the system and get the GPE. */ 2668 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0) 2669 return (ENXIO); 2670 2671 flags = acpi_get_flags(dev); 2672 if (enable) { 2673 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, 2674 ACPI_GPE_ENABLE); 2675 if (ACPI_FAILURE(status)) { 2676 device_printf(dev, "enable wake failed\n"); 2677 return (ENXIO); 2678 } 2679 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED); 2680 } else { 2681 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, 2682 ACPI_GPE_DISABLE); 2683 if (ACPI_FAILURE(status)) { 2684 device_printf(dev, "disable wake failed\n"); 2685 return (ENXIO); 2686 } 2687 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED); 2688 } 2689 2690 return (0); 2691 } 2692 2693 static int 2694 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate) 2695 { 2696 struct acpi_prw_data prw; 2697 device_t dev; 2698 2699 /* Check that this is a wake-capable device and get its GPE. */ 2700 if (acpi_parse_prw(handle, &prw) != 0) 2701 return (ENXIO); 2702 dev = acpi_get_device(handle); 2703 2704 /* 2705 * The destination sleep state must be less than (i.e., higher power) 2706 * or equal to the value specified by _PRW. If this GPE cannot be 2707 * enabled for the next sleep state, then disable it. If it can and 2708 * the user requested it be enabled, turn on any required power resources 2709 * and set _PSW. 2710 */ 2711 if (sstate > prw.lowest_wake) { 2712 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE); 2713 if (bootverbose) 2714 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n", 2715 acpi_name(handle), sstate); 2716 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) { 2717 acpi_pwr_wake_enable(handle, 1); 2718 acpi_SetInteger(handle, "_PSW", 1); 2719 if (bootverbose) 2720 device_printf(dev, "wake_prep enabled for %s (S%d)\n", 2721 acpi_name(handle), sstate); 2722 } 2723 2724 return (0); 2725 } 2726 2727 static int 2728 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate) 2729 { 2730 struct acpi_prw_data prw; 2731 device_t dev; 2732 2733 /* 2734 * Check that this is a wake-capable device and get its GPE. Return 2735 * now if the user didn't enable this device for wake. 2736 */ 2737 if (acpi_parse_prw(handle, &prw) != 0) 2738 return (ENXIO); 2739 dev = acpi_get_device(handle); 2740 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0) 2741 return (0); 2742 2743 /* 2744 * If this GPE couldn't be enabled for the previous sleep state, it was 2745 * disabled before going to sleep so re-enable it. If it was enabled, 2746 * clear _PSW and turn off any power resources it used. 2747 */ 2748 if (sstate > prw.lowest_wake) { 2749 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE); 2750 if (bootverbose) 2751 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle)); 2752 } else { 2753 acpi_SetInteger(handle, "_PSW", 0); 2754 acpi_pwr_wake_enable(handle, 0); 2755 if (bootverbose) 2756 device_printf(dev, "run_prep cleaned up for %s\n", 2757 acpi_name(handle)); 2758 } 2759 2760 return (0); 2761 } 2762 2763 static ACPI_STATUS 2764 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 2765 { 2766 int sstate; 2767 2768 /* If suspending, run the sleep prep function, otherwise wake. */ 2769 sstate = *(int *)context; 2770 if (AcpiGbl_SystemAwakeAndRunning) 2771 acpi_wake_sleep_prep(handle, sstate); 2772 else 2773 acpi_wake_run_prep(handle, sstate); 2774 return (AE_OK); 2775 } 2776 2777 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */ 2778 static int 2779 acpi_wake_prep_walk(int sstate) 2780 { 2781 ACPI_HANDLE sb_handle; 2782 2783 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) { 2784 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100, 2785 acpi_wake_prep, NULL, &sstate, NULL); 2786 } 2787 return (0); 2788 } 2789 2790 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */ 2791 static int 2792 acpi_wake_sysctl_walk(device_t dev) 2793 { 2794 #ifdef notyet 2795 int error, i, numdevs; 2796 device_t *devlist; 2797 device_t child; 2798 ACPI_STATUS status; 2799 2800 error = device_get_children(dev, &devlist, &numdevs); 2801 if (error != 0 || numdevs == 0) { 2802 if (numdevs == 0) 2803 kfree(devlist, M_TEMP); 2804 return (error); 2805 } 2806 for (i = 0; i < numdevs; i++) { 2807 child = devlist[i]; 2808 acpi_wake_sysctl_walk(child); 2809 if (!device_is_attached(child)) 2810 continue; 2811 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL); 2812 if (ACPI_SUCCESS(status)) { 2813 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child), 2814 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO, 2815 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0, 2816 acpi_wake_set_sysctl, "I", "Device set to wake the system"); 2817 } 2818 } 2819 kfree(devlist, M_TEMP); 2820 #endif 2821 2822 return (0); 2823 } 2824 2825 #ifdef notyet 2826 /* Enable or disable wake from userland. */ 2827 static int 2828 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS) 2829 { 2830 int enable, error; 2831 device_t dev; 2832 2833 dev = (device_t)arg1; 2834 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0; 2835 2836 error = sysctl_handle_int(oidp, &enable, 0, req); 2837 if (error != 0 || req->newptr == NULL) 2838 return (error); 2839 if (enable != 0 && enable != 1) 2840 return (EINVAL); 2841 2842 return (acpi_wake_set_enable(dev, enable)); 2843 } 2844 #endif 2845 2846 /* Parse a device's _PRW into a structure. */ 2847 int 2848 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw) 2849 { 2850 ACPI_STATUS status; 2851 ACPI_BUFFER prw_buffer; 2852 ACPI_OBJECT *res, *res2; 2853 int error, i, power_count; 2854 2855 if (h == NULL || prw == NULL) 2856 return (EINVAL); 2857 2858 /* 2859 * The _PRW object (7.2.9) is only required for devices that have the 2860 * ability to wake the system from a sleeping state. 2861 */ 2862 error = EINVAL; 2863 prw_buffer.Pointer = NULL; 2864 prw_buffer.Length = ACPI_ALLOCATE_BUFFER; 2865 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer); 2866 if (ACPI_FAILURE(status)) 2867 return (ENOENT); 2868 res = (ACPI_OBJECT *)prw_buffer.Pointer; 2869 if (res == NULL) 2870 return (ENOENT); 2871 if (!ACPI_PKG_VALID(res, 2)) 2872 goto out; 2873 2874 /* 2875 * Element 1 of the _PRW object: 2876 * The lowest power system sleeping state that can be entered while still 2877 * providing wake functionality. The sleeping state being entered must 2878 * be less than (i.e., higher power) or equal to this value. 2879 */ 2880 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0) 2881 goto out; 2882 2883 /* 2884 * Element 0 of the _PRW object: 2885 */ 2886 switch (res->Package.Elements[0].Type) { 2887 case ACPI_TYPE_INTEGER: 2888 /* 2889 * If the data type of this package element is numeric, then this 2890 * _PRW package element is the bit index in the GPEx_EN, in the 2891 * GPE blocks described in the FADT, of the enable bit that is 2892 * enabled for the wake event. 2893 */ 2894 prw->gpe_handle = NULL; 2895 prw->gpe_bit = res->Package.Elements[0].Integer.Value; 2896 error = 0; 2897 break; 2898 case ACPI_TYPE_PACKAGE: 2899 /* 2900 * If the data type of this package element is a package, then this 2901 * _PRW package element is itself a package containing two 2902 * elements. The first is an object reference to the GPE Block 2903 * device that contains the GPE that will be triggered by the wake 2904 * event. The second element is numeric and it contains the bit 2905 * index in the GPEx_EN, in the GPE Block referenced by the 2906 * first element in the package, of the enable bit that is enabled for 2907 * the wake event. 2908 * 2909 * For example, if this field is a package then it is of the form: 2910 * Package() {\_SB.PCI0.ISA.GPE, 2} 2911 */ 2912 res2 = &res->Package.Elements[0]; 2913 if (!ACPI_PKG_VALID(res2, 2)) 2914 goto out; 2915 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]); 2916 if (prw->gpe_handle == NULL) 2917 goto out; 2918 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0) 2919 goto out; 2920 error = 0; 2921 break; 2922 default: 2923 goto out; 2924 } 2925 2926 /* Elements 2 to N of the _PRW object are power resources. */ 2927 power_count = res->Package.Count - 2; 2928 if (power_count > ACPI_PRW_MAX_POWERRES) { 2929 kprintf("ACPI device %s has too many power resources\n", acpi_name(h)); 2930 power_count = 0; 2931 } 2932 prw->power_res_count = power_count; 2933 for (i = 0; i < power_count; i++) 2934 prw->power_res[i] = res->Package.Elements[i]; 2935 2936 out: 2937 if (prw_buffer.Pointer != NULL) 2938 AcpiOsFree(prw_buffer.Pointer); 2939 return (error); 2940 } 2941 2942 /* 2943 * ACPI Event Handlers 2944 */ 2945 2946 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */ 2947 2948 static void 2949 acpi_system_eventhandler_sleep(void *arg, int state) 2950 { 2951 struct acpi_softc *sc; 2952 int ret; 2953 2954 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 2955 2956 sc = arg; 2957 2958 /* Check if button action is disabled. */ 2959 if (state == ACPI_S_STATES_MAX + 1) 2960 return; 2961 2962 /* Request that the system prepare to enter the given suspend state. */ 2963 ret = acpi_ReqSleepState((struct acpi_softc *)arg, state); 2964 if (ret != 0) 2965 device_printf(sc->acpi_dev, 2966 "request to enter state S%d failed (err %d)\n", state, ret); 2967 2968 return_VOID; 2969 } 2970 2971 static void 2972 acpi_system_eventhandler_wakeup(void *arg, int state) 2973 { 2974 2975 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 2976 2977 /* Currently, nothing to do for wakeup. */ 2978 2979 return_VOID; 2980 } 2981 2982 /* 2983 * ACPICA Event Handlers (FixedEvent, also called from button notify handler) 2984 */ 2985 UINT32 2986 acpi_event_power_button_sleep(void *context) 2987 { 2988 struct acpi_softc *sc = (struct acpi_softc *)context; 2989 2990 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 2991 2992 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx); 2993 2994 return_VALUE (ACPI_INTERRUPT_HANDLED); 2995 } 2996 2997 UINT32 2998 acpi_event_power_button_wake(void *context) 2999 { 3000 struct acpi_softc *sc = (struct acpi_softc *)context; 3001 3002 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3003 3004 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx); 3005 3006 return_VALUE (ACPI_INTERRUPT_HANDLED); 3007 } 3008 3009 UINT32 3010 acpi_event_sleep_button_sleep(void *context) 3011 { 3012 struct acpi_softc *sc = (struct acpi_softc *)context; 3013 3014 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3015 3016 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx); 3017 3018 return_VALUE (ACPI_INTERRUPT_HANDLED); 3019 } 3020 3021 UINT32 3022 acpi_event_sleep_button_wake(void *context) 3023 { 3024 struct acpi_softc *sc = (struct acpi_softc *)context; 3025 3026 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3027 3028 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx); 3029 3030 return_VALUE (ACPI_INTERRUPT_HANDLED); 3031 } 3032 3033 /* 3034 * XXX This static buffer is suboptimal. There is no locking so only 3035 * use this for single-threaded callers. 3036 */ 3037 char * 3038 acpi_name(ACPI_HANDLE handle) 3039 { 3040 ACPI_BUFFER buf; 3041 static char data[256]; 3042 3043 buf.Length = sizeof(data); 3044 buf.Pointer = data; 3045 3046 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf))) 3047 return (data); 3048 return ("(unknown)"); 3049 } 3050 3051 /* 3052 * Debugging/bug-avoidance. Avoid trying to fetch info on various 3053 * parts of the namespace. 3054 */ 3055 int 3056 acpi_avoid(ACPI_HANDLE handle) 3057 { 3058 char *cp, *env, *np; 3059 int len; 3060 3061 np = acpi_name(handle); 3062 if (*np == '\\') 3063 np++; 3064 if ((env = kgetenv("debug.acpi.avoid")) == NULL) 3065 return (0); 3066 3067 /* Scan the avoid list checking for a match */ 3068 cp = env; 3069 for (;;) { 3070 while (*cp != 0 && isspace(*cp)) 3071 cp++; 3072 if (*cp == 0) 3073 break; 3074 len = 0; 3075 while (cp[len] != 0 && !isspace(cp[len])) 3076 len++; 3077 if (!strncmp(cp, np, len)) { 3078 kfreeenv(env); 3079 return(1); 3080 } 3081 cp += len; 3082 } 3083 kfreeenv(env); 3084 3085 return (0); 3086 } 3087 3088 /* 3089 * Debugging/bug-avoidance. Disable ACPI subsystem components. 3090 */ 3091 int 3092 acpi_disabled(char *subsys) 3093 { 3094 char *cp, *env; 3095 int len; 3096 3097 if ((env = kgetenv("debug.acpi.disabled")) == NULL) 3098 return (0); 3099 if (strcmp(env, "all") == 0) { 3100 kfreeenv(env); 3101 return (1); 3102 } 3103 3104 /* Scan the disable list, checking for a match. */ 3105 cp = env; 3106 for (;;) { 3107 while (*cp != '\0' && isspace(*cp)) 3108 cp++; 3109 if (*cp == '\0') 3110 break; 3111 len = 0; 3112 while (cp[len] != '\0' && !isspace(cp[len])) 3113 len++; 3114 if (strncmp(cp, subsys, len) == 0) { 3115 kfreeenv(env); 3116 return (1); 3117 } 3118 cp += len; 3119 } 3120 kfreeenv(env); 3121 3122 return (0); 3123 } 3124 3125 /* 3126 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most 3127 * components are enabled by default. The ones that are not have to be 3128 * enabled via debug.acpi.enabled. 3129 */ 3130 int 3131 acpi_enabled(char *subsys) 3132 { 3133 char *cp, *env; 3134 int len; 3135 3136 if ((env = kgetenv("debug.acpi.enabled")) == NULL) 3137 return (0); 3138 if (strcmp(env, "all") == 0) { 3139 kfreeenv(env); 3140 return (1); 3141 } 3142 3143 /* Scan the enable list, checking for a match. */ 3144 cp = env; 3145 for (;;) { 3146 while (*cp != '\0' && isspace(*cp)) 3147 cp++; 3148 if (*cp == '\0') 3149 break; 3150 len = 0; 3151 while (cp[len] != '\0' && !isspace(cp[len])) 3152 len++; 3153 if (strncmp(cp, subsys, len) == 0) { 3154 kfreeenv(env); 3155 return (1); 3156 } 3157 cp += len; 3158 } 3159 kfreeenv(env); 3160 3161 return (0); 3162 } 3163 3164 /* 3165 * Control interface. 3166 * 3167 * We multiplex ioctls for all participating ACPI devices here. Individual 3168 * drivers wanting to be accessible via /dev/acpi should use the 3169 * register/deregister interface to make their handlers visible. 3170 */ 3171 struct acpi_ioctl_hook 3172 { 3173 TAILQ_ENTRY(acpi_ioctl_hook) link; 3174 u_long cmd; 3175 acpi_ioctl_fn fn; 3176 void *arg; 3177 }; 3178 3179 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks; 3180 static int acpi_ioctl_hooks_initted; 3181 3182 int 3183 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg) 3184 { 3185 struct acpi_ioctl_hook *hp; 3186 3187 if ((hp = kmalloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL) 3188 return (ENOMEM); 3189 hp->cmd = cmd; 3190 hp->fn = fn; 3191 hp->arg = arg; 3192 3193 ACPI_LOCK(acpi); 3194 if (acpi_ioctl_hooks_initted == 0) { 3195 TAILQ_INIT(&acpi_ioctl_hooks); 3196 acpi_ioctl_hooks_initted = 1; 3197 } 3198 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link); 3199 ACPI_UNLOCK(acpi); 3200 3201 return (0); 3202 } 3203 3204 void 3205 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn) 3206 { 3207 struct acpi_ioctl_hook *hp; 3208 3209 ACPI_LOCK(acpi); 3210 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) 3211 if (hp->cmd == cmd && hp->fn == fn) 3212 break; 3213 3214 if (hp != NULL) { 3215 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link); 3216 kfree(hp, M_ACPIDEV); 3217 } 3218 ACPI_UNLOCK(acpi); 3219 } 3220 3221 static int 3222 acpiopen(struct dev_open_args *ap) 3223 { 3224 return (0); 3225 } 3226 3227 static int 3228 acpiclose(struct dev_close_args *ap) 3229 { 3230 return (0); 3231 } 3232 3233 static int 3234 acpiioctl(struct dev_ioctl_args *ap) 3235 { 3236 struct acpi_softc *sc; 3237 struct acpi_ioctl_hook *hp; 3238 int error, state; 3239 3240 error = 0; 3241 hp = NULL; 3242 sc = ap->a_head.a_dev->si_drv1; 3243 3244 /* 3245 * Scan the list of registered ioctls, looking for handlers. 3246 */ 3247 lwkt_gettoken(&acpi_token); 3248 ACPI_LOCK(acpi); 3249 if (acpi_ioctl_hooks_initted) { 3250 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) { 3251 if (hp->cmd == ap->a_cmd) 3252 break; 3253 } 3254 } 3255 ACPI_UNLOCK(acpi); 3256 if (hp) { 3257 error = hp->fn(ap->a_cmd, ap->a_data, hp->arg); 3258 lwkt_reltoken(&acpi_token); 3259 return error; 3260 } 3261 3262 /* 3263 * Core ioctls are not permitted for non-writable user. 3264 * Currently, other ioctls just fetch information. 3265 * Not changing system behavior. 3266 */ 3267 if ((ap->a_fflag & FWRITE) == 0) { 3268 lwkt_reltoken(&acpi_token); 3269 return (EPERM); 3270 } 3271 3272 /* Core system ioctls. */ 3273 switch (ap->a_cmd) { 3274 case ACPIIO_REQSLPSTATE: 3275 state = *(int *)ap->a_data; 3276 if (state != ACPI_STATE_S5) 3277 error = acpi_ReqSleepState(sc, state); 3278 else { 3279 device_printf(sc->acpi_dev, 3280 "power off via acpi ioctl not supported\n"); 3281 error = ENXIO; 3282 } 3283 break; 3284 case ACPIIO_ACKSLPSTATE: 3285 error = EOPNOTSUPP; 3286 #if 0 /* notyet */ 3287 error = *(int *)ap->a_data; 3288 error = acpi_AckSleepState(sc->acpi_clone, error); 3289 #endif 3290 break; 3291 case ACPIIO_SETSLPSTATE: /* DEPRECATED */ 3292 error = EINVAL; 3293 state = *(int *)ap->a_data; 3294 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) 3295 if (ACPI_SUCCESS(acpi_SetSleepState(sc, state))) 3296 error = 0; 3297 break; 3298 case ACPIIO_DO_MCALL: 3299 if (acpi_allow_mcall == 1) { 3300 struct acpi_mcall_ioctl_arg *params; 3301 ACPI_BUFFER result = { ACPI_ALLOCATE_BUFFER, NULL }; 3302 ACPI_OBJECT *resobj; 3303 3304 error = EINVAL; 3305 params = (struct acpi_mcall_ioctl_arg *)ap->a_data; 3306 params->retval = AcpiEvaluateObject(NULL, params->path, 3307 ¶ms->args, &result); 3308 if (ACPI_SUCCESS(params->retval) && result.Pointer != NULL && 3309 params->result.Pointer != NULL) { 3310 params->result.Length = min(params->result.Length, 3311 result.Length); 3312 copyout(result.Pointer, params->result.Pointer, 3313 params->result.Length); 3314 params->reslen = result.Length; 3315 if (result.Length >= sizeof(ACPI_OBJECT)) { 3316 resobj = (ACPI_OBJECT *)params->result.Pointer; 3317 switch (resobj->Type) { 3318 case ACPI_TYPE_STRING: 3319 resobj->String.Pointer = (char *) 3320 ((UINT8 *)(resobj->String.Pointer) - 3321 (UINT8 *)result.Pointer + 3322 (UINT8 *)resobj); 3323 break; 3324 case ACPI_TYPE_BUFFER: 3325 resobj->Buffer.Pointer -= (UINT8 *)result.Pointer - 3326 (UINT8 *)resobj; 3327 break; 3328 } 3329 } 3330 error = 0; 3331 } 3332 if (result.Pointer != NULL) 3333 AcpiOsFree(result.Pointer); 3334 } else { 3335 device_printf(sc->acpi_dev, 3336 "debug.acpi.allow_method_calls must be set\n"); 3337 error = ENXIO; 3338 } 3339 break; 3340 default: 3341 error = ENXIO; 3342 break; 3343 } 3344 lwkt_reltoken(&acpi_token); 3345 3346 return (error); 3347 } 3348 3349 static int 3350 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 3351 { 3352 int error; 3353 struct sbuf sb; 3354 UINT8 state, TypeA, TypeB; 3355 3356 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND); 3357 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++) 3358 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) 3359 sbuf_printf(&sb, "S%d ", state); 3360 sbuf_trim(&sb); 3361 sbuf_finish(&sb); 3362 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req); 3363 sbuf_delete(&sb); 3364 return (error); 3365 } 3366 3367 static int 3368 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 3369 { 3370 char sleep_state[10]; 3371 int error; 3372 u_int new_state, old_state; 3373 3374 old_state = *(u_int *)oidp->oid_arg1; 3375 if (old_state > ACPI_S_STATES_MAX + 1) 3376 strlcpy(sleep_state, "unknown", sizeof(sleep_state)); 3377 else 3378 strlcpy(sleep_state, sleep_state_names[old_state], sizeof(sleep_state)); 3379 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req); 3380 if (error == 0 && req->newptr != NULL) { 3381 new_state = ACPI_STATE_S0; 3382 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++) 3383 if (strcmp(sleep_state, sleep_state_names[new_state]) == 0) 3384 break; 3385 if (new_state <= ACPI_S_STATES_MAX + 1) { 3386 if (new_state != old_state) 3387 *(u_int *)oidp->oid_arg1 = new_state; 3388 } else 3389 error = EINVAL; 3390 } 3391 3392 return (error); 3393 } 3394 3395 /* Inform devctl(4) when we receive a Notify. */ 3396 void 3397 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify) 3398 { 3399 char notify_buf[16]; 3400 ACPI_BUFFER handle_buf; 3401 ACPI_STATUS status; 3402 3403 if (subsystem == NULL) 3404 return; 3405 3406 handle_buf.Pointer = NULL; 3407 handle_buf.Length = ACPI_ALLOCATE_BUFFER; 3408 status = AcpiNsHandleToPathname(h, &handle_buf, FALSE); 3409 if (ACPI_FAILURE(status)) 3410 return; 3411 ksnprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify); 3412 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf); 3413 AcpiOsFree(handle_buf.Pointer); 3414 } 3415 3416 #ifdef ACPI_DEBUG 3417 /* 3418 * Support for parsing debug options from the kernel environment. 3419 * 3420 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers 3421 * by specifying the names of the bits in the debug.acpi.layer and 3422 * debug.acpi.level environment variables. Bits may be unset by 3423 * prefixing the bit name with !. 3424 */ 3425 struct debugtag 3426 { 3427 char *name; 3428 UINT32 value; 3429 }; 3430 3431 static struct debugtag dbg_layer[] = { 3432 {"ACPI_UTILITIES", ACPI_UTILITIES}, 3433 {"ACPI_HARDWARE", ACPI_HARDWARE}, 3434 {"ACPI_EVENTS", ACPI_EVENTS}, 3435 {"ACPI_TABLES", ACPI_TABLES}, 3436 {"ACPI_NAMESPACE", ACPI_NAMESPACE}, 3437 {"ACPI_PARSER", ACPI_PARSER}, 3438 {"ACPI_DISPATCHER", ACPI_DISPATCHER}, 3439 {"ACPI_EXECUTER", ACPI_EXECUTER}, 3440 {"ACPI_RESOURCES", ACPI_RESOURCES}, 3441 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER}, 3442 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES}, 3443 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER}, 3444 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS}, 3445 3446 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER}, 3447 {"ACPI_BATTERY", ACPI_BATTERY}, 3448 {"ACPI_BUS", ACPI_BUS}, 3449 {"ACPI_BUTTON", ACPI_BUTTON}, 3450 {"ACPI_EC", ACPI_EC}, 3451 {"ACPI_FAN", ACPI_FAN}, 3452 {"ACPI_POWERRES", ACPI_POWERRES}, 3453 {"ACPI_PROCESSOR", ACPI_PROCESSOR}, 3454 {"ACPI_THERMAL", ACPI_THERMAL}, 3455 {"ACPI_TIMER", ACPI_TIMER}, 3456 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS}, 3457 {NULL, 0} 3458 }; 3459 3460 static struct debugtag dbg_level[] = { 3461 {"ACPI_LV_INIT", ACPI_LV_INIT}, 3462 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT}, 3463 {"ACPI_LV_INFO", ACPI_LV_INFO}, 3464 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR}, 3465 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS}, 3466 3467 /* Trace verbosity level 1 [Standard Trace Level] */ 3468 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES}, 3469 {"ACPI_LV_PARSE", ACPI_LV_PARSE}, 3470 {"ACPI_LV_LOAD", ACPI_LV_LOAD}, 3471 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH}, 3472 {"ACPI_LV_EXEC", ACPI_LV_EXEC}, 3473 {"ACPI_LV_NAMES", ACPI_LV_NAMES}, 3474 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION}, 3475 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD}, 3476 {"ACPI_LV_TABLES", ACPI_LV_TABLES}, 3477 {"ACPI_LV_VALUES", ACPI_LV_VALUES}, 3478 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS}, 3479 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES}, 3480 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS}, 3481 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE}, 3482 {"ACPI_LV_EVALUATION", ACPI_LV_EVALUATION}, 3483 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1}, 3484 3485 /* Trace verbosity level 2 [Function tracing and memory allocation] */ 3486 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS}, 3487 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS}, 3488 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS}, 3489 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2}, 3490 {"ACPI_LV_ALL", ACPI_LV_ALL}, 3491 3492 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */ 3493 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX}, 3494 {"ACPI_LV_THREADS", ACPI_LV_THREADS}, 3495 {"ACPI_LV_IO", ACPI_LV_IO}, 3496 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS}, 3497 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3}, 3498 3499 /* Exceptionally verbose output -- also used in the global "DebugLevel" */ 3500 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE}, 3501 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO}, 3502 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES}, 3503 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS}, 3504 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE}, 3505 {NULL, 0} 3506 }; 3507 3508 static void 3509 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag) 3510 { 3511 char *ep; 3512 int i, l; 3513 int set; 3514 3515 while (*cp) { 3516 if (isspace(*cp)) { 3517 cp++; 3518 continue; 3519 } 3520 ep = cp; 3521 while (*ep && !isspace(*ep)) 3522 ep++; 3523 if (*cp == '!') { 3524 set = 0; 3525 cp++; 3526 if (cp == ep) 3527 continue; 3528 } else { 3529 set = 1; 3530 } 3531 l = ep - cp; 3532 for (i = 0; tag[i].name != NULL; i++) { 3533 if (!strncmp(cp, tag[i].name, l)) { 3534 if (set) 3535 *flag |= tag[i].value; 3536 else 3537 *flag &= ~tag[i].value; 3538 } 3539 } 3540 cp = ep; 3541 } 3542 } 3543 3544 static void 3545 acpi_set_debugging(void *junk) 3546 { 3547 char *layer, *level; 3548 3549 if (cold) { 3550 AcpiDbgLayer = 0; 3551 AcpiDbgLevel = 0; 3552 } 3553 3554 layer = kgetenv("debug.acpi.layer"); 3555 level = kgetenv("debug.acpi.level"); 3556 if (layer == NULL && level == NULL) 3557 return; 3558 3559 kprintf("ACPI set debug"); 3560 if (layer != NULL) { 3561 if (strcmp("NONE", layer) != 0) 3562 kprintf(" layer '%s'", layer); 3563 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer); 3564 kfreeenv(layer); 3565 } 3566 if (level != NULL) { 3567 if (strcmp("NONE", level) != 0) 3568 kprintf(" level '%s'", level); 3569 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel); 3570 kfreeenv(level); 3571 } 3572 kprintf("\n"); 3573 } 3574 3575 SYSINIT(acpi_debugging, SI_BOOT1_TUNABLES, SI_ORDER_ANY, acpi_set_debugging, 3576 NULL); 3577 3578 static int 3579 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS) 3580 { 3581 int error, *dbg; 3582 struct debugtag *tag; 3583 struct sbuf sb; 3584 3585 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL) 3586 return (ENOMEM); 3587 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) { 3588 tag = &dbg_layer[0]; 3589 dbg = &AcpiDbgLayer; 3590 } else { 3591 tag = &dbg_level[0]; 3592 dbg = &AcpiDbgLevel; 3593 } 3594 3595 /* Get old values if this is a get request. */ 3596 ACPI_SERIAL_BEGIN(acpi); 3597 if (*dbg == 0) { 3598 sbuf_cpy(&sb, "NONE"); 3599 } else if (req->newptr == NULL) { 3600 for (; tag->name != NULL; tag++) { 3601 if ((*dbg & tag->value) == tag->value) 3602 sbuf_printf(&sb, "%s ", tag->name); 3603 } 3604 } 3605 sbuf_trim(&sb); 3606 sbuf_finish(&sb); 3607 3608 /* Copy out the old values to the user. */ 3609 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb)); 3610 sbuf_delete(&sb); 3611 3612 /* If the user is setting a string, parse it. */ 3613 if (error == 0 && req->newptr != NULL) { 3614 *dbg = 0; 3615 ksetenv((char *)oidp->oid_arg1, (char *)req->newptr); 3616 acpi_set_debugging(NULL); 3617 } 3618 ACPI_SERIAL_END(acpi); 3619 3620 return (error); 3621 } 3622 3623 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING, 3624 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", ""); 3625 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING, 3626 "debug.acpi.level", 0, acpi_debug_sysctl, "A", ""); 3627 #endif /* ACPI_DEBUG */ 3628 3629 static int 3630 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS) 3631 { 3632 int error; 3633 int old; 3634 3635 old = acpi_debug_objects; 3636 error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req); 3637 if (error != 0 || req->newptr == NULL) 3638 return (error); 3639 if (old == acpi_debug_objects || (old && acpi_debug_objects)) 3640 return (0); 3641 3642 ACPI_SERIAL_BEGIN(acpi); 3643 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE; 3644 ACPI_SERIAL_END(acpi); 3645 3646 return (0); 3647 } 3648 3649 3650 static int 3651 acpi_parse_interfaces(char *str, struct acpi_interface *iface) 3652 { 3653 char *p; 3654 size_t len; 3655 int i, j; 3656 3657 p = str; 3658 while (isspace(*p) || *p == ',') 3659 p++; 3660 len = strlen(p); 3661 if (len == 0) 3662 return (0); 3663 p = kstrdup(p, M_TEMP); 3664 for (i = 0; i < len; i++) 3665 if (p[i] == ',') 3666 p[i] = '\0'; 3667 i = j = 0; 3668 while (i < len) 3669 if (isspace(p[i]) || p[i] == '\0') 3670 i++; 3671 else { 3672 i += strlen(p + i) + 1; 3673 j++; 3674 } 3675 if (j == 0) { 3676 kfree(p, M_TEMP); 3677 return (0); 3678 } 3679 iface->data = kmalloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK); 3680 iface->num = j; 3681 i = j = 0; 3682 while (i < len) 3683 if (isspace(p[i]) || p[i] == '\0') 3684 i++; 3685 else { 3686 iface->data[j] = p + i; 3687 i += strlen(p + i) + 1; 3688 j++; 3689 } 3690 3691 return (j); 3692 } 3693 3694 static void 3695 acpi_free_interfaces(struct acpi_interface *iface) 3696 { 3697 kfree(iface->data[0], M_TEMP); 3698 kfree(iface->data, M_TEMP); 3699 } 3700 3701 static void 3702 acpi_reset_interfaces(device_t dev) 3703 { 3704 struct acpi_interface list; 3705 ACPI_STATUS status; 3706 int i; 3707 3708 if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) { 3709 for (i = 0; i < list.num; i++) { 3710 status = AcpiInstallInterface(list.data[i]); 3711 if (ACPI_FAILURE(status)) 3712 device_printf(dev, 3713 "failed to install _OSI(\"%s\"): %s\n", 3714 list.data[i], AcpiFormatException(status)); 3715 else if (bootverbose) 3716 device_printf(dev, "installed _OSI(\"%s\")\n", 3717 list.data[i]); 3718 } 3719 acpi_free_interfaces(&list); 3720 } 3721 if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) { 3722 for (i = 0; i < list.num; i++) { 3723 status = AcpiRemoveInterface(list.data[i]); 3724 if (ACPI_FAILURE(status)) 3725 device_printf(dev, 3726 "failed to remove _OSI(\"%s\"): %s\n", 3727 list.data[i], AcpiFormatException(status)); 3728 else if (bootverbose) 3729 device_printf(dev, "removed _OSI(\"%s\")\n", 3730 list.data[i]); 3731 } 3732 acpi_free_interfaces(&list); 3733 } 3734 } 3735 3736 static int 3737 acpi_pm_func(u_long cmd, void *arg, ...) 3738 { 3739 int state, acpi_state; 3740 int error; 3741 struct acpi_softc *sc; 3742 __va_list ap; 3743 3744 error = 0; 3745 switch (cmd) { 3746 case POWER_CMD_SUSPEND: 3747 sc = (struct acpi_softc *)arg; 3748 if (sc == NULL) { 3749 error = EINVAL; 3750 goto out; 3751 } 3752 3753 __va_start(ap, arg); 3754 state = __va_arg(ap, int); 3755 __va_end(ap); 3756 3757 switch (state) { 3758 case POWER_SLEEP_STATE_STANDBY: 3759 acpi_state = sc->acpi_standby_sx; 3760 break; 3761 case POWER_SLEEP_STATE_SUSPEND: 3762 acpi_state = sc->acpi_suspend_sx; 3763 break; 3764 case POWER_SLEEP_STATE_HIBERNATE: 3765 acpi_state = ACPI_STATE_S4; 3766 break; 3767 default: 3768 error = EINVAL; 3769 goto out; 3770 } 3771 3772 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state))) 3773 error = ENXIO; 3774 break; 3775 default: 3776 error = EINVAL; 3777 goto out; 3778 } 3779 3780 out: 3781 return (error); 3782 } 3783 3784 static void 3785 acpi_pm_register(void *arg) 3786 { 3787 if (!cold || resource_disabled("acpi", 0)) 3788 return; 3789 3790 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL); 3791 } 3792 3793 SYSINIT(power, SI_BOOT2_KLD, SI_ORDER_ANY, acpi_pm_register, 0); 3794