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 #include <machine/cputypes.h> 69 70 #include <vm/vm_param.h> 71 72 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices"); 73 74 /* Hooks for the ACPICA debugging infrastructure */ 75 #define _COMPONENT ACPI_BUS 76 ACPI_MODULE_NAME("ACPI"); 77 78 static d_open_t acpiopen; 79 static d_close_t acpiclose; 80 static d_ioctl_t acpiioctl; 81 82 static struct dev_ops acpi_ops = { 83 { "acpi", 0, D_MPSAFE }, 84 .d_open = acpiopen, 85 .d_close = acpiclose, 86 .d_ioctl = acpiioctl 87 }; 88 89 struct acpi_interface { 90 ACPI_STRING *data; 91 int num; 92 }; 93 94 /* Global mutex for locking access to the ACPI subsystem. */ 95 struct lock acpi_lock; 96 struct lwkt_token acpi_token = LWKT_TOKEN_INITIALIZER(acpi_token); 97 98 /* Bitmap of device quirks. */ 99 int acpi_quirks; 100 101 static int acpi_modevent(struct module *mod, int event, void *junk); 102 static void acpi_identify(driver_t *driver, device_t parent); 103 static int acpi_probe(device_t dev); 104 static int acpi_attach(device_t dev); 105 static int acpi_suspend(device_t dev); 106 static int acpi_resume(device_t dev); 107 static int acpi_shutdown(device_t dev); 108 static device_t acpi_add_child(device_t bus, device_t parent, int order, const char *name, 109 int unit); 110 static int acpi_print_child(device_t bus, device_t child); 111 static void acpi_probe_nomatch(device_t bus, device_t child); 112 static void acpi_driver_added(device_t dev, driver_t *driver); 113 static int acpi_read_ivar(device_t dev, device_t child, int index, 114 uintptr_t *result); 115 static int acpi_write_ivar(device_t dev, device_t child, int index, 116 uintptr_t value); 117 static struct resource_list *acpi_get_rlist(device_t dev, device_t child); 118 static int acpi_sysres_alloc(device_t dev); 119 static struct resource *acpi_alloc_resource(device_t bus, device_t child, 120 int type, int *rid, u_long start, u_long end, 121 u_long count, u_int flags, int cpuid); 122 static int acpi_release_resource(device_t bus, device_t child, int type, 123 int rid, struct resource *r); 124 static void acpi_delete_resource(device_t bus, device_t child, int type, 125 int rid); 126 static uint32_t acpi_isa_get_logicalid(device_t dev); 127 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count); 128 static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids); 129 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev, 130 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters, 131 ACPI_BUFFER *ret); 132 static int acpi_device_pwr_for_sleep(device_t bus, device_t dev, 133 int *dstate); 134 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, 135 void *context, void **retval); 136 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev, 137 int max_depth, acpi_scan_cb_t user_fn, void *arg); 138 static int acpi_set_powerstate_method(device_t bus, device_t child, 139 int state); 140 static int acpi_isa_pnp_probe(device_t bus, device_t child, 141 struct isa_pnp_id *ids); 142 static void acpi_probe_children(device_t bus); 143 static void acpi_probe_order(ACPI_HANDLE handle, int *order); 144 static void acpi_disable_not_present(device_t child); 145 static void acpi_reprobe_children(device_t bus, device_t *children, 146 int cnt); 147 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level, 148 void *context, void **status); 149 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state); 150 static void acpi_shutdown_final(void *arg, int howto); 151 static void acpi_enable_fixed_events(struct acpi_softc *sc); 152 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate); 153 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate); 154 static int acpi_wake_prep_walk(int sstate); 155 static int acpi_wake_sysctl_walk(device_t dev); 156 #ifdef notyet 157 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS); 158 #endif 159 static void acpi_system_eventhandler_sleep(void *arg, int state); 160 static void acpi_system_eventhandler_wakeup(void *arg, int state); 161 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); 162 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); 163 static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS); 164 static int acpi_pm_func(u_long cmd, void *arg, ...); 165 static int acpi_child_location_str_method(device_t acdev, device_t child, 166 char *buf, size_t buflen); 167 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child, 168 char *buf, size_t buflen); 169 static void acpi_enable_pcie(void); 170 static void acpi_reset_interfaces(device_t dev); 171 static void acpi_call_fixup_pointers(ACPI_OBJECT *p, UINT8 *orig); 172 static int acpi_call_ioctl(caddr_t addr); 173 static ACPI_OBJECT_LIST *acpi_copyin_object_list(ACPI_OBJECT_LIST *src); 174 static void acpi_free_object_list(ACPI_OBJECT_LIST *list); 175 176 static device_method_t acpi_methods[] = { 177 /* Device interface */ 178 DEVMETHOD(device_identify, acpi_identify), 179 DEVMETHOD(device_probe, acpi_probe), 180 DEVMETHOD(device_attach, acpi_attach), 181 DEVMETHOD(device_shutdown, acpi_shutdown), 182 DEVMETHOD(device_detach, bus_generic_detach), 183 DEVMETHOD(device_suspend, acpi_suspend), 184 DEVMETHOD(device_resume, acpi_resume), 185 186 /* Bus interface */ 187 DEVMETHOD(bus_add_child, acpi_add_child), 188 DEVMETHOD(bus_print_child, acpi_print_child), 189 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch), 190 DEVMETHOD(bus_driver_added, acpi_driver_added), 191 DEVMETHOD(bus_read_ivar, acpi_read_ivar), 192 DEVMETHOD(bus_write_ivar, acpi_write_ivar), 193 DEVMETHOD(bus_get_resource_list, acpi_get_rlist), 194 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource), 195 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 196 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource), 197 DEVMETHOD(bus_release_resource, acpi_release_resource), 198 DEVMETHOD(bus_delete_resource, acpi_delete_resource), 199 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method), 200 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method), 201 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 202 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 203 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 204 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 205 206 /* ACPI bus */ 207 DEVMETHOD(acpi_id_probe, acpi_device_id_probe), 208 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj), 209 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep), 210 DEVMETHOD(acpi_scan_children, acpi_device_scan_children), 211 212 /* PCI emulation */ 213 DEVMETHOD(pci_set_powerstate, acpi_set_powerstate_method), 214 215 /* ISA emulation */ 216 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe), 217 218 DEVMETHOD_END 219 }; 220 221 static driver_t acpi_driver = { 222 "acpi", 223 acpi_methods, 224 sizeof(struct acpi_softc), 225 .gpri = KOBJ_GPRI_ACPI+2 226 }; 227 228 static devclass_t acpi_devclass; 229 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, NULL); 230 MODULE_VERSION(acpi, 1); 231 232 ACPI_SERIAL_DECL(acpi, "ACPI serializer"); 233 234 /* Local pools for managing system resources for ACPI child devices. */ 235 static struct rman acpi_rman_io, acpi_rman_mem; 236 237 #define ACPI_MINIMUM_AWAKETIME 5 238 239 static const char* sleep_state_names[] = { 240 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"}; 241 242 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging"); 243 static char acpi_ca_version[12]; 244 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD, 245 acpi_ca_version, 0, "Version of Intel ACPICA"); 246 247 /* 248 * Allow overriding _OSI methods. 249 */ 250 static char acpi_install_interface[256]; 251 TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface, 252 sizeof(acpi_install_interface)); 253 static char acpi_remove_interface[256]; 254 TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface, 255 sizeof(acpi_remove_interface)); 256 257 /* 258 * Use this tunable to disable the control method auto-serialization 259 * mechanism that was added in 20140214 and superseded the previous 260 * AcpiGbl_SerializeAllMethods global. 261 */ 262 static int acpi_auto_serialize_methods = 1; 263 TUNABLE_INT("hw.acpi.auto_serialize_methods", &acpi_auto_serialize_methods); 264 265 /* Allow users to dump Debug objects without ACPI debugger. */ 266 static int acpi_debug_objects; 267 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects); 268 SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects, 269 CTLFLAG_RW | CTLTYPE_INT, NULL, 0, acpi_debug_objects_sysctl, "I", 270 "Enable Debug objects."); 271 272 /* Allow ignoring the XSDT. */ 273 static int acpi_ignore_xsdt; 274 TUNABLE_INT("debug.acpi.ignore_xsdt", &acpi_ignore_xsdt); 275 SYSCTL_INT(_debug_acpi, OID_AUTO, ignore_xsdt, CTLFLAG_RD, 276 &acpi_ignore_xsdt, 1, "Ignore the XSDT, forcing the use of the RSDT."); 277 278 /* Allow the interpreter to ignore common mistakes in BIOS. */ 279 static int acpi_interpreter_slack = 1; 280 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack); 281 SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RD, 282 &acpi_interpreter_slack, 1, "Turn on interpreter slack mode."); 283 284 /* Allow preferring 32-bit FADT register addresses over the 64-bit ones. */ 285 static int acpi_fadt_addr32; 286 TUNABLE_INT("debug.acpi.fadt_addr32", &acpi_fadt_addr32); 287 SYSCTL_INT(_debug_acpi, OID_AUTO, fadt_addr32, CTLFLAG_RD, 288 &acpi_fadt_addr32, 1, 289 "Prefer 32-bit FADT register addresses over 64-bit ones."); 290 291 /* Prefer 32-bit FACS table addresses over the 64-bit ones. */ 292 static int acpi_facs_addr32 = 1; 293 TUNABLE_INT("debug.acpi.facs_addr32", &acpi_facs_addr32); 294 SYSCTL_INT(_debug_acpi, OID_AUTO, facs_addr32, CTLFLAG_RD, 295 &acpi_facs_addr32, 1, 296 "Prefer 32-bit FACS table addresses over 64-bit ones."); 297 298 /* Power devices off and on in suspend and resume. XXX Remove once tested. */ 299 static int acpi_do_powerstate = 1; 300 TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate); 301 SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW, 302 &acpi_do_powerstate, 1, "Turn off devices when suspending."); 303 304 /* Allow users to override quirks. */ 305 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks); 306 307 /* Allow to call ACPI methods from userland. */ 308 static int acpi_allow_mcall; 309 TUNABLE_INT("debug.acpi.allow_method_calls", &acpi_allow_mcall); 310 311 static int acpi_susp_bounce; 312 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW, 313 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices."); 314 315 #if defined(__x86_64__) 316 int acpi_override_isa_irq_polarity; 317 #endif 318 319 /* 320 * ACPI can only be loaded as a module by the loader; activating it after 321 * system bootstrap time is not useful, and can be fatal to the system. 322 * It also cannot be unloaded, since the entire system bus heirarchy hangs 323 * off it. 324 */ 325 static int 326 acpi_modevent(struct module *mod, int event, void *junk) 327 { 328 switch (event) { 329 case MOD_LOAD: 330 if (!cold) { 331 kprintf("The ACPI driver cannot be loaded after boot.\n"); 332 return (EPERM); 333 } 334 break; 335 case MOD_UNLOAD: 336 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI) 337 return (EBUSY); 338 break; 339 default: 340 break; 341 } 342 return (0); 343 } 344 345 /* 346 * Perform early initialization. 347 */ 348 ACPI_STATUS 349 acpi_Startup(void) 350 { 351 static int started = 0; 352 ACPI_STATUS status; 353 int val; 354 355 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 356 357 /* Only run the startup code once. The MADT driver also calls this. */ 358 if (started) 359 return_VALUE (AE_OK); 360 started = 1; 361 362 /* Start up the ACPICA subsystem. */ 363 status = AcpiInitializeSubsystem(); 364 if (ACPI_FAILURE(status)) { 365 kprintf("ACPI: Subsystem initialization failed: %s\n", 366 AcpiFormatException(status)); 367 return_VALUE (status); 368 } 369 370 /* 371 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing 372 * if more tables exist. 373 */ 374 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) { 375 kprintf("ACPI: Table initialization failed: %s\n", 376 AcpiFormatException(status)); 377 return_VALUE (status); 378 } 379 380 /* Set up any quirks we have for this system. */ 381 if (acpi_quirks == ACPI_Q_OK) 382 acpi_table_quirks(&acpi_quirks); 383 384 /* If the user manually set the disabled hint to 0, force-enable ACPI. */ 385 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0) 386 acpi_quirks &= ~ACPI_Q_BROKEN; 387 if (acpi_quirks & ACPI_Q_BROKEN) { 388 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n"); 389 status = AE_SUPPORT; 390 } 391 392 return_VALUE (status); 393 } 394 395 /* 396 * Detect ACPI, perform early initialisation 397 */ 398 static void 399 acpi_identify(driver_t *driver, device_t parent) 400 { 401 device_t child; 402 403 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 404 405 if (!cold) 406 return_VOID; 407 408 /* Check that we haven't been disabled with a hint. */ 409 if (resource_disabled("acpi", 0)) 410 return_VOID; 411 412 /* Make sure we're not being doubly invoked. */ 413 if (device_find_child(parent, "acpi", 0) != NULL) 414 return_VOID; 415 416 ksnprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION); 417 418 /* Initialize root tables. */ 419 if (ACPI_FAILURE(acpi_Startup())) { 420 kprintf("ACPI: Try disabling either ACPI or apic support.\n"); 421 return_VOID; 422 } 423 424 /* Attach the actual ACPI device. */ 425 if ((child = BUS_ADD_CHILD(parent, parent, 10, "acpi", 0)) == NULL) { 426 device_printf(parent, "device_identify failed\n"); 427 return_VOID; 428 } 429 } 430 431 /* 432 * Fetch some descriptive data from ACPI to put in our attach message. 433 */ 434 static int 435 acpi_probe(device_t dev) 436 { 437 ACPI_TABLE_RSDP *rsdp; 438 ACPI_TABLE_HEADER *rsdt; 439 ACPI_PHYSICAL_ADDRESS paddr; 440 char buf[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2]; 441 struct sbuf sb; 442 443 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 444 445 if (power_pm_get_type() != POWER_PM_TYPE_NONE && 446 power_pm_get_type() != POWER_PM_TYPE_ACPI) { 447 device_printf(dev, "probe failed, other PM system enabled.\n"); 448 return_VALUE (ENXIO); 449 } 450 451 if ((paddr = AcpiOsGetRootPointer()) == 0 || 452 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL) 453 return_VALUE (ENXIO); 454 if (acpi_ignore_xsdt == 0 && 455 rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0) 456 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress; 457 else 458 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress; 459 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 460 461 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL) 462 return_VALUE (ENXIO); 463 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN); 464 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE); 465 sbuf_trim(&sb); 466 sbuf_putc(&sb, ' '); 467 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE); 468 sbuf_trim(&sb); 469 sbuf_finish(&sb); 470 device_set_desc_copy(dev, sbuf_data(&sb)); 471 sbuf_delete(&sb); 472 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 473 474 return_VALUE (0); 475 } 476 477 static int 478 acpi_attach(device_t dev) 479 { 480 struct acpi_softc *sc; 481 ACPI_STATUS status; 482 int error, state; 483 UINT32 flags; 484 UINT8 TypeA, TypeB; 485 char *env; 486 487 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 488 489 sc = device_get_softc(dev); 490 sc->acpi_dev = dev; 491 callout_init(&sc->susp_force_to); 492 493 if ((error = acpi_task_thread_init())) { 494 device_printf(dev, "Could not start task thread.\n"); 495 goto out2; 496 } 497 498 error = ENXIO; 499 500 /* Initialize resource manager. */ 501 acpi_rman_io.rm_type = RMAN_ARRAY; 502 acpi_rman_io.rm_start = 0; 503 acpi_rman_io.rm_end = 0xffff; 504 acpi_rman_io.rm_descr = "ACPI I/O ports"; 505 if (rman_init(&acpi_rman_io, -1) != 0) 506 panic("acpi rman_init IO ports failed"); 507 acpi_rman_mem.rm_type = RMAN_ARRAY; 508 acpi_rman_mem.rm_start = 0; 509 acpi_rman_mem.rm_end = ~0ul; 510 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses"; 511 if (rman_init(&acpi_rman_mem, -1) != 0) 512 panic("acpi rman_init memory failed"); 513 514 /* Initialise the ACPI mutex */ 515 ACPI_LOCK_INIT(acpi, "acpi"); 516 ACPI_SERIAL_INIT(acpi); 517 518 ACPI_LOCK(acpi); 519 520 /* 521 * Set the globals from our tunables. This is needed because ACPICA 522 * uses UINT8 for some values and we have no tunable_byte. 523 */ 524 AcpiGbl_AutoSerializeMethods = acpi_auto_serialize_methods ? TRUE : FALSE; 525 AcpiGbl_DoNotUseXsdt = acpi_ignore_xsdt ? TRUE : FALSE; 526 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE; 527 AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE; 528 AcpiGbl_Use32BitFadtAddresses = acpi_fadt_addr32 ? TRUE : FALSE; 529 AcpiGbl_Use32BitFacsAddresses = acpi_facs_addr32 ? TRUE : FALSE; 530 531 #ifndef ACPI_DEBUG 532 /* 533 * Disable Debug Object output. 534 */ 535 AcpiDbgLevel &= ~ACPI_LV_DEBUG_OBJECT; 536 #endif 537 538 /* Override OS interfaces if the user requested. */ 539 acpi_reset_interfaces(dev); 540 541 /* Load ACPI name space. */ 542 status = AcpiLoadTables(); 543 if (ACPI_FAILURE(status)) { 544 device_printf(dev, "Could not load Namespace: %s\n", 545 AcpiFormatException(status)); 546 goto out; 547 } 548 549 /* Handle MCFG table if present. */ 550 acpi_enable_pcie(); 551 552 /* 553 * Note that some systems (specifically, those with namespace evaluation 554 * issues that require the avoidance of parts of the namespace) must 555 * avoid running _INI and _STA on everything, as well as dodging the final 556 * object init pass. 557 * 558 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT). 559 * 560 * XXX We should arrange for the object init pass after we have attached 561 * all our child devices, but on many systems it works here. 562 */ 563 flags = ACPI_FULL_INITIALIZATION; 564 if (ktestenv("debug.acpi.avoid")) 565 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; 566 567 /* Bring the hardware and basic handlers online. */ 568 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) { 569 device_printf(dev, "Could not enable ACPI: %s\n", 570 AcpiFormatException(status)); 571 goto out; 572 } 573 574 /* 575 * Fix up the interrupt timer after enabling ACPI, so that the 576 * interrupt cputimer that choked by ACPI power management could 577 * be resurrected before probing various devices. 578 */ 579 DELAY(5000); 580 cputimer_intr_pmfixup(); 581 582 /* 583 * Call the ECDT probe function to provide EC functionality before 584 * the namespace has been evaluated. 585 * 586 * XXX This happens before the sysresource devices have been probed and 587 * attached so its resources come from nexus0. In practice, this isn't 588 * a problem but should be addressed eventually. 589 */ 590 acpi_ec_ecdt_probe(dev); 591 592 /* Bring device objects and regions online. */ 593 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) { 594 device_printf(dev, "Could not initialize ACPI objects: %s\n", 595 AcpiFormatException(status)); 596 goto out; 597 } 598 599 /* 600 * Setup our sysctl tree. 601 * 602 * XXX: This doesn't check to make sure that none of these fail. 603 */ 604 sysctl_ctx_init(&sc->acpi_sysctl_ctx); 605 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx, 606 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, 607 device_get_name(dev), CTLFLAG_RD, 0, ""); 608 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 609 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD, 610 0, 0, acpi_supported_sleep_state_sysctl, "A", ""); 611 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 612 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW, 613 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); 614 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 615 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW, 616 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); 617 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 618 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW, 619 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", ""); 620 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 621 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW, 622 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", ""); 623 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 624 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW, 625 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", ""); 626 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 627 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0, 628 "sleep delay"); 629 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 630 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode"); 631 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 632 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode"); 633 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 634 OID_AUTO, "disable_on_reboot", CTLFLAG_RW, 635 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system"); 636 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 637 OID_AUTO, "handle_reboot", CTLFLAG_RW, 638 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot"); 639 640 #if defined(__x86_64__) 641 /* 642 * Enable workaround for incorrect ISA IRQ polarity by default on 643 * systems with Intel CPUs. 644 */ 645 if (cpu_vendor_id == CPU_VENDOR_INTEL) 646 acpi_override_isa_irq_polarity = 1; 647 648 TUNABLE_INT_FETCH("hw.acpi.override_isa_irq_polarity", 649 &acpi_override_isa_irq_polarity); 650 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 651 OID_AUTO, "override_isa_irq_polarity", CTLFLAG_RD, 652 &acpi_override_isa_irq_polarity, 0, 653 "Force active-hi polarity for edge-triggered ISA IRQs"); 654 #endif 655 656 /* 657 * Default to 1 second before sleeping to give some machines time to 658 * stabilize. 659 */ 660 sc->acpi_sleep_delay = 1; 661 if (bootverbose) 662 sc->acpi_verbose = 1; 663 if ((env = kgetenv("hw.acpi.verbose")) != NULL) { 664 if (strcmp(env, "0") != 0) 665 sc->acpi_verbose = 1; 666 kfreeenv(env); 667 } 668 669 /* Only enable reboot by default if the FADT says it is available. */ 670 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) 671 sc->acpi_handle_reboot = 1; 672 673 /* Only enable S4BIOS by default if the FACS says it is available. */ 674 if (AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT) 675 sc->acpi_s4bios = 1; 676 677 /* 678 * Dispatch the default sleep state to devices. The lid switch is set 679 * to NONE by default to avoid surprising users. 680 */ 681 sc->acpi_power_button_sx = ACPI_STATE_S5; 682 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1; 683 sc->acpi_standby_sx = ACPI_STATE_S1; 684 sc->acpi_suspend_sx = ACPI_STATE_S3; 685 686 /* Pick the first valid sleep state for the sleep button default. */ 687 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1; 688 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++) 689 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) { 690 sc->acpi_sleep_button_sx = state; 691 break; 692 } 693 694 acpi_enable_fixed_events(sc); 695 696 /* 697 * Scan the namespace and attach/initialise children. 698 */ 699 700 /* Register our shutdown handler. */ 701 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc, 702 SHUTDOWN_PRI_LAST); 703 704 /* 705 * Register our acpi event handlers. 706 * XXX should be configurable eg. via userland policy manager. 707 */ 708 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep, 709 sc, ACPI_EVENT_PRI_LAST); 710 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup, 711 sc, ACPI_EVENT_PRI_LAST); 712 713 /* Flag our initial states. */ 714 sc->acpi_enabled = 1; 715 sc->acpi_sstate = ACPI_STATE_S0; 716 sc->acpi_sleep_disabled = 0; 717 /* Create the control device */ 718 sc->acpi_dev_t = make_dev(&acpi_ops, 0, UID_ROOT, GID_WHEEL, 0644, "acpi"); 719 sc->acpi_dev_t->si_drv1 = sc; 720 721 if ((error = acpi_machdep_init(dev))) 722 goto out; 723 724 /* Register ACPI again to pass the correct argument of pm_func. */ 725 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc); 726 727 if (!acpi_disabled("bus")) 728 acpi_probe_children(dev); 729 730 /* Update all GPEs and enable runtime GPEs. */ 731 status = AcpiUpdateAllGpes(); 732 if (ACPI_FAILURE(status)) { 733 device_printf(dev, "Could not update all GPEs: %s\n", 734 AcpiFormatException(status)); 735 } 736 737 /* Allow sleep request after a while. */ 738 /* timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME); */ 739 740 error = 0; 741 742 out: 743 ACPI_UNLOCK(acpi); 744 out2: 745 cputimer_intr_pmfixup(); 746 acpi_task_thread_schedule(); 747 748 return_VALUE (error); 749 } 750 751 static int 752 acpi_suspend(device_t dev) 753 { 754 device_t child, *devlist; 755 int error, i, numdevs, pstate; 756 757 /* First give child devices a chance to suspend. */ 758 error = bus_generic_suspend(dev); 759 if (error) 760 return (error); 761 762 /* 763 * Now, set them into the appropriate power state, usually D3. If the 764 * device has an _SxD method for the next sleep state, use that power 765 * state instead. 766 */ 767 device_get_children(dev, &devlist, &numdevs); 768 for (i = 0; i < numdevs; i++) { 769 /* If the device is not attached, we've powered it down elsewhere. */ 770 child = devlist[i]; 771 if (!device_is_attached(child)) 772 continue; 773 774 /* 775 * Default to D3 for all sleep states. The _SxD method is optional 776 * so set the powerstate even if it's absent. 777 */ 778 pstate = PCI_POWERSTATE_D3; 779 error = acpi_device_pwr_for_sleep(device_get_parent(child), 780 child, &pstate); 781 if ((error == 0 || error == ESRCH) && acpi_do_powerstate) 782 pci_set_powerstate(child, pstate); 783 } 784 kfree(devlist, M_TEMP); 785 error = 0; 786 787 return (error); 788 } 789 790 static int 791 acpi_resume(device_t dev) 792 { 793 ACPI_HANDLE handle; 794 int i, numdevs; 795 device_t child, *devlist; 796 797 /* 798 * Put all devices in D0 before resuming them. Call _S0D on each one 799 * since some systems expect this. 800 */ 801 device_get_children(dev, &devlist, &numdevs); 802 for (i = 0; i < numdevs; i++) { 803 child = devlist[i]; 804 handle = acpi_get_handle(child); 805 if (handle) 806 AcpiEvaluateObject(handle, "_S0D", NULL, NULL); 807 if (device_is_attached(child) && acpi_do_powerstate) 808 pci_set_powerstate(child, PCI_POWERSTATE_D0); 809 } 810 kfree(devlist, M_TEMP); 811 812 return (bus_generic_resume(dev)); 813 } 814 815 static int 816 acpi_shutdown(device_t dev) 817 { 818 /* Allow children to shutdown first. */ 819 bus_generic_shutdown(dev); 820 821 /* 822 * Enable any GPEs that are able to power-on the system (i.e., RTC). 823 * Also, disable any that are not valid for this state (most). 824 */ 825 acpi_wake_prep_walk(ACPI_STATE_S5); 826 827 return (0); 828 } 829 830 /* 831 * Handle a new device being added 832 */ 833 static device_t 834 acpi_add_child(device_t bus, device_t parent, int order, const char *name, int unit) 835 { 836 struct acpi_device *ad; 837 device_t child; 838 839 if ((ad = kmalloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL) 840 return (NULL); 841 842 resource_list_init(&ad->ad_rl); 843 child = device_add_child_ordered(parent, order, name, unit); 844 if (child != NULL) 845 device_set_ivars(child, ad); 846 else 847 kfree(ad, M_ACPIDEV); 848 return (child); 849 } 850 851 static int 852 acpi_print_child(device_t bus, device_t child) 853 { 854 struct acpi_device *adev = device_get_ivars(child); 855 struct resource_list *rl = &adev->ad_rl; 856 int retval = 0; 857 858 retval += bus_print_child_header(bus, child); 859 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx"); 860 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx"); 861 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 862 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld"); 863 if (device_get_flags(child)) 864 retval += kprintf(" flags %#x", device_get_flags(child)); 865 retval += bus_print_child_footer(bus, child); 866 867 return (retval); 868 } 869 870 /* 871 * If this device is an ACPI child but no one claimed it, attempt 872 * to power it off. We'll power it back up when a driver is added. 873 * 874 * XXX Disabled for now since many necessary devices (like fdc and 875 * ATA) don't claim the devices we created for them but still expect 876 * them to be powered up. 877 */ 878 static void 879 acpi_probe_nomatch(device_t bus, device_t child) 880 { 881 882 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */ 883 } 884 885 /* 886 * If a new driver has a chance to probe a child, first power it up. 887 * 888 * XXX Disabled for now (see acpi_probe_nomatch for details). 889 */ 890 static void 891 acpi_driver_added(device_t dev, driver_t *driver) 892 { 893 device_t child, *devlist; 894 int i, numdevs; 895 896 DEVICE_IDENTIFY(driver, dev); 897 device_get_children(dev, &devlist, &numdevs); 898 for (i = 0; i < numdevs; i++) { 899 child = devlist[i]; 900 if (device_get_state(child) == DS_NOTPRESENT) { 901 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */ 902 if (device_probe_and_attach(child) != 0) { 903 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */ 904 } 905 } 906 } 907 kfree(devlist, M_TEMP); 908 } 909 910 /* Location hint for devctl(8) */ 911 static int 912 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf, 913 size_t buflen) 914 { 915 struct acpi_device *dinfo = device_get_ivars(child); 916 917 if (dinfo->ad_handle) 918 ksnprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle)); 919 else 920 ksnprintf(buf, buflen, "unknown"); 921 return (0); 922 } 923 924 /* PnP information for devctl(8) */ 925 static int 926 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf, 927 size_t buflen) 928 { 929 ACPI_DEVICE_INFO *adinfo; 930 struct acpi_device *dinfo = device_get_ivars(child); 931 932 if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo))) { 933 ksnprintf(buf, buflen, "unknown"); 934 } else { 935 ksnprintf(buf, buflen, "_HID=%s _UID=%s", 936 (adinfo->Valid & ACPI_VALID_HID) ? 937 adinfo->HardwareId.String : "none", 938 (adinfo->Valid & ACPI_VALID_UID) ? 939 adinfo->UniqueId.String : "0"); 940 AcpiOsFree(adinfo); 941 } 942 return (0); 943 } 944 945 /* 946 * Handle per-device ivars 947 */ 948 static int 949 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) 950 { 951 struct acpi_device *ad; 952 953 if ((ad = device_get_ivars(child)) == NULL) { 954 device_printf(child, "device has no ivars\n"); 955 return (ENOENT); 956 } 957 958 /* ACPI and ISA compatibility ivars */ 959 switch(index) { 960 case ACPI_IVAR_HANDLE: 961 *(ACPI_HANDLE *)result = ad->ad_handle; 962 break; 963 case ACPI_IVAR_MAGIC: 964 *result = ad->ad_magic; 965 break; 966 case ACPI_IVAR_PRIVATE: 967 *(void **)result = ad->ad_private; 968 break; 969 case ACPI_IVAR_FLAGS: 970 *(int *)result = ad->ad_flags; 971 break; 972 case ACPI_IVAR_RECHECK: 973 *(int *)result = ad->ad_recheck; 974 break; 975 case ISA_IVAR_VENDORID: 976 case ISA_IVAR_SERIAL: 977 case ISA_IVAR_COMPATID: 978 *(int *)result = -1; 979 break; 980 case ISA_IVAR_LOGICALID: 981 *(int *)result = acpi_isa_get_logicalid(child); 982 break; 983 default: 984 return (ENOENT); 985 } 986 987 return (0); 988 } 989 990 static int 991 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value) 992 { 993 struct acpi_device *ad; 994 995 if ((ad = device_get_ivars(child)) == NULL) { 996 device_printf(child, "device has no ivars\n"); 997 return (ENOENT); 998 } 999 1000 switch(index) { 1001 case ACPI_IVAR_HANDLE: 1002 ad->ad_handle = (ACPI_HANDLE)value; 1003 break; 1004 case ACPI_IVAR_MAGIC: 1005 ad->ad_magic = value; 1006 break; 1007 case ACPI_IVAR_PRIVATE: 1008 ad->ad_private = (void *)value; 1009 break; 1010 case ACPI_IVAR_FLAGS: 1011 ad->ad_flags = (int)value; 1012 break; 1013 case ACPI_IVAR_RECHECK: 1014 ad->ad_recheck = (int)value; 1015 break; 1016 default: 1017 panic("bad ivar write request (%d)", index); 1018 return (ENOENT); 1019 } 1020 1021 return (0); 1022 } 1023 1024 /* 1025 * Handle child resource allocation/removal 1026 */ 1027 static struct resource_list * 1028 acpi_get_rlist(device_t dev, device_t child) 1029 { 1030 struct acpi_device *ad; 1031 1032 ad = device_get_ivars(child); 1033 return (&ad->ad_rl); 1034 } 1035 1036 /* 1037 * Pre-allocate/manage all memory and IO resources. Since rman can't handle 1038 * duplicates, we merge any in the sysresource attach routine. 1039 */ 1040 static int 1041 acpi_sysres_alloc(device_t dev) 1042 { 1043 struct resource *res; 1044 struct resource_list *rl; 1045 struct resource_list_entry *rle; 1046 struct rman *rm; 1047 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL }; 1048 device_t *children; 1049 int child_count, i; 1050 /* 1051 * Probe/attach any sysresource devices. This would be unnecessary if we 1052 * had multi-pass probe/attach. 1053 */ 1054 if (device_get_children(dev, &children, &child_count) != 0) 1055 return (ENXIO); 1056 for (i = 0; i < child_count; i++) { 1057 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL) 1058 device_probe_and_attach(children[i]); 1059 } 1060 kfree(children, M_TEMP); 1061 1062 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev); 1063 if(!rl) 1064 return 0; 1065 SLIST_FOREACH(rle, rl, link) { 1066 if (rle->res != NULL) { 1067 device_printf(dev, "duplicate resource for %lx\n", rle->start); 1068 continue; 1069 } 1070 1071 /* Only memory and IO resources are valid here. */ 1072 switch (rle->type) { 1073 case SYS_RES_IOPORT: 1074 rm = &acpi_rman_io; 1075 break; 1076 case SYS_RES_MEMORY: 1077 rm = &acpi_rman_mem; 1078 break; 1079 default: 1080 continue; 1081 } 1082 1083 /* Pre-allocate resource and add to our rman pool. */ 1084 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type, 1085 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 1086 0, -1); 1087 if (res != NULL) { 1088 rman_manage_region(rm, rman_get_start(res), rman_get_end(res)); 1089 rle->res = res; 1090 } else 1091 device_printf(dev, "reservation of %lx, %lx (%d) failed\n", 1092 rle->start, rle->count, rle->type); 1093 } 1094 return (0); 1095 } 1096 1097 static struct resource * 1098 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, 1099 u_long start, u_long end, u_long count, u_int flags, int cpuid) 1100 { 1101 ACPI_RESOURCE ares; 1102 struct acpi_device *ad = device_get_ivars(child); 1103 struct resource_list *rl = &ad->ad_rl; 1104 struct resource_list_entry *rle; 1105 struct resource *res; 1106 struct rman *rm; 1107 1108 res = NULL; 1109 1110 /* We only handle memory and IO resources through rman. */ 1111 switch (type) { 1112 case SYS_RES_IOPORT: 1113 rm = &acpi_rman_io; 1114 break; 1115 case SYS_RES_MEMORY: 1116 rm = &acpi_rman_mem; 1117 break; 1118 default: 1119 rm = NULL; 1120 } 1121 1122 ACPI_SERIAL_BEGIN(acpi); 1123 1124 /* 1125 * If this is an allocation of the "default" range for a given RID, and 1126 * we know what the resources for this device are (i.e., they're on the 1127 * child's resource list), use those start/end values. 1128 */ 1129 if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) { 1130 rle = resource_list_find(rl, type, *rid); 1131 if (rle == NULL) 1132 goto out; 1133 start = rle->start; 1134 end = rle->end; 1135 count = rle->count; 1136 cpuid = rle->cpuid; 1137 } 1138 1139 /* 1140 * If this is an allocation of a specific range, see if we can satisfy 1141 * the request from our system resource regions. If we can't, pass the 1142 * request up to the parent. 1143 */ 1144 if (start + count - 1 == end && rm != NULL) 1145 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE, 1146 child); 1147 if (res == NULL) { 1148 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid, 1149 start, end, count, flags, cpuid); 1150 } else { 1151 rman_set_rid(res, *rid); 1152 1153 /* If requested, activate the resource using the parent's method. */ 1154 if (flags & RF_ACTIVE) 1155 if (bus_activate_resource(child, type, *rid, res) != 0) { 1156 rman_release_resource(res); 1157 res = NULL; 1158 goto out; 1159 } 1160 } 1161 1162 if (res != NULL && device_get_parent(child) == bus) 1163 switch (type) { 1164 case SYS_RES_IRQ: 1165 /* 1166 * Since bus_config_intr() takes immediate effect, we cannot 1167 * configure the interrupt associated with a device when we 1168 * parse the resources but have to defer it until a driver 1169 * actually allocates the interrupt via bus_alloc_resource(). 1170 * 1171 * NB: Lookup failure is fine, since the device may add its 1172 * own interrupt resources, e.g. MSI or MSI-X. 1173 */ 1174 if (ACPI_SUCCESS( 1175 acpi_lookup_irq_resource(child, *rid, res, &ares))) { 1176 acpi_config_intr(child, &ares); 1177 } else { 1178 kprintf("irq resource not found\n"); 1179 } 1180 break; 1181 } 1182 1183 out: 1184 ACPI_SERIAL_END(acpi); 1185 return (res); 1186 } 1187 1188 static int 1189 acpi_release_resource(device_t bus, device_t child, int type, int rid, 1190 struct resource *r) 1191 { 1192 struct rman *rm; 1193 int ret; 1194 1195 /* We only handle memory and IO resources through rman. */ 1196 switch (type) { 1197 case SYS_RES_IOPORT: 1198 rm = &acpi_rman_io; 1199 break; 1200 case SYS_RES_MEMORY: 1201 rm = &acpi_rman_mem; 1202 break; 1203 default: 1204 rm = NULL; 1205 } 1206 1207 ACPI_SERIAL_BEGIN(acpi); 1208 1209 /* 1210 * If this resource belongs to one of our internal managers, 1211 * deactivate it and release it to the local pool. If it doesn't, 1212 * pass this request up to the parent. 1213 */ 1214 if (rm != NULL && rman_is_region_manager(r, rm)) { 1215 if (rman_get_flags(r) & RF_ACTIVE) { 1216 ret = bus_deactivate_resource(child, type, rid, r); 1217 if (ret != 0) 1218 goto out; 1219 } 1220 ret = rman_release_resource(r); 1221 } else 1222 ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r); 1223 1224 out: 1225 ACPI_SERIAL_END(acpi); 1226 return (ret); 1227 } 1228 1229 static void 1230 acpi_delete_resource(device_t bus, device_t child, int type, int rid) 1231 { 1232 struct resource_list *rl; 1233 1234 rl = acpi_get_rlist(bus, child); 1235 resource_list_delete(rl, type, rid); 1236 } 1237 1238 /* Allocate an IO port or memory resource, given its GAS. */ 1239 int 1240 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas, 1241 struct resource **res, u_int flags) 1242 { 1243 int error, res_type; 1244 1245 error = ENOMEM; 1246 if (type == NULL || rid == NULL || gas == NULL || res == NULL) 1247 return (EINVAL); 1248 1249 /* We only support memory and IO spaces. */ 1250 switch (gas->SpaceId) { 1251 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 1252 res_type = SYS_RES_MEMORY; 1253 break; 1254 case ACPI_ADR_SPACE_SYSTEM_IO: 1255 res_type = SYS_RES_IOPORT; 1256 break; 1257 default: 1258 return (EOPNOTSUPP); 1259 } 1260 1261 /* 1262 * If the register width is less than 8, assume the BIOS author means 1263 * it is a bit field and just allocate a byte. 1264 */ 1265 if (gas->BitWidth && gas->BitWidth < 8) 1266 gas->BitWidth = 8; 1267 1268 /* Validate the address after we're sure we support the space. */ 1269 if (gas->Address == 0 || gas->BitWidth == 0) 1270 return (EINVAL); 1271 1272 bus_set_resource(dev, res_type, *rid, gas->Address, 1273 gas->BitWidth / 8, -1); 1274 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags); 1275 if (*res != NULL) { 1276 *type = res_type; 1277 error = 0; 1278 } else 1279 bus_delete_resource(dev, res_type, *rid); 1280 1281 return (error); 1282 } 1283 1284 ACPI_STATUS 1285 acpi_eval_osc(device_t dev, ACPI_HANDLE handle, const char *uuidstr, 1286 int revision, uint32_t *buf, int count) 1287 { 1288 ACPI_BUFFER retbuf = { ACPI_ALLOCATE_BUFFER, NULL }; 1289 ACPI_OBJECT_LIST arglist; 1290 ACPI_OBJECT arg[4]; 1291 ACPI_OBJECT *retobj; 1292 ACPI_STATUS status; 1293 struct uuid uuid; 1294 uint32_t error; 1295 uint8_t oscuuid[ACPI_UUID_LENGTH]; 1296 int i; 1297 1298 if (parse_uuid(uuidstr, &uuid) != 0) 1299 return (AE_ERROR); 1300 le_uuid_enc(oscuuid, &uuid); 1301 1302 arglist.Pointer = arg; 1303 arglist.Count = 4; 1304 arg[0].Type = ACPI_TYPE_BUFFER; 1305 arg[0].Buffer.Length = ACPI_UUID_LENGTH; 1306 arg[0].Buffer.Pointer = oscuuid; /* UUID */ 1307 arg[1].Type = ACPI_TYPE_INTEGER; 1308 arg[1].Integer.Value = revision; /* revision */ 1309 arg[2].Type = ACPI_TYPE_INTEGER; 1310 arg[2].Integer.Value = count; /* # of cap integers */ 1311 arg[3].Type = ACPI_TYPE_BUFFER; 1312 arg[3].Buffer.Length = count * sizeof(uint32_t); /* capabilities buffer */ 1313 arg[3].Buffer.Pointer = (uint8_t *)buf; 1314 1315 status = AcpiEvaluateObject(handle, "_OSC", &arglist, &retbuf); 1316 if (ACPI_FAILURE(status)) 1317 goto done; 1318 retobj = retbuf.Pointer; 1319 error = ((uint32_t *)retobj->Buffer.Pointer)[0] & ACPI_OSC_ERRMASK; 1320 if (error == 0) 1321 goto done; 1322 status = AE_ERROR; 1323 if (error & ACPI_OSCERR_FAILURE) 1324 device_printf(dev, "_OSC unable to process request\n"); 1325 if (error & ACPI_OSCERR_BADUUID) 1326 device_printf(dev, "_OSC unrecognized UUID (%s)\n", uuidstr); 1327 if (error & ACPI_OSCERR_BADREV) 1328 device_printf(dev, "_OSC unrecognized revision ID (%d)\n", revision); 1329 if (error & ACPI_OSCERR_CAPSMASKED) { 1330 if ((buf[0] & ACPI_OSC_QUERY_SUPPORT) == 0) { 1331 for (i = 1; i < count; i++) { 1332 device_printf(dev, 1333 "_OSC capabilities have been masked: buf[%d]:%#x\n", 1334 i, buf[i] & ~((uint32_t *)retobj->Buffer.Pointer)[i]); 1335 } 1336 status = AE_SUPPORT; 1337 } else { 1338 status = AE_OK; 1339 } 1340 } 1341 if (buf[0] & ACPI_OSC_QUERY_SUPPORT) { 1342 for (i = 0; i < count; i++) 1343 buf[i] = ((uint32_t *)retobj->Buffer.Pointer)[i]; 1344 } 1345 1346 done: 1347 if (retbuf.Pointer != NULL) 1348 AcpiOsFree(retbuf.Pointer); 1349 return (status); 1350 } 1351 1352 /* Probe _HID and _CID for compatible ISA PNP ids. */ 1353 static uint32_t 1354 acpi_isa_get_logicalid(device_t dev) 1355 { 1356 ACPI_DEVICE_INFO *devinfo; 1357 ACPI_HANDLE h; 1358 uint32_t pnpid; 1359 1360 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1361 1362 devinfo = NULL; 1363 pnpid = 0; 1364 1365 /* Fetch and validate the HID. */ 1366 if ((h = acpi_get_handle(dev)) == NULL || 1367 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 1368 goto out; 1369 1370 if ((devinfo->Valid & ACPI_VALID_HID) != 0) 1371 pnpid = PNP_EISAID(devinfo->HardwareId.String); 1372 1373 out: 1374 if (devinfo) 1375 AcpiOsFree(devinfo); 1376 return_VALUE (pnpid); 1377 } 1378 1379 static int 1380 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count) 1381 { 1382 ACPI_DEVICE_INFO *devinfo; 1383 ACPI_HANDLE h; 1384 uint32_t *pnpid; 1385 int valid, i; 1386 1387 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1388 1389 devinfo = NULL; 1390 pnpid = cids; 1391 valid = 0; 1392 1393 /* Fetch and validate the CID */ 1394 if ((h = acpi_get_handle(dev)) == NULL || 1395 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)) || 1396 (devinfo->Valid & ACPI_VALID_CID) == 0) 1397 goto out; 1398 1399 if (devinfo->CompatibleIdList.Count < count) 1400 count = devinfo->CompatibleIdList.Count; 1401 for (i = 0; i < count; i++) { 1402 if (strncmp(devinfo->CompatibleIdList.Ids[i].String, "PNP", 3) != 0) 1403 continue; 1404 *pnpid++ = PNP_EISAID(devinfo->CompatibleIdList.Ids[i].String); 1405 valid++; 1406 } 1407 1408 out: 1409 if (devinfo) 1410 AcpiOsFree(devinfo); 1411 return_VALUE (valid); 1412 } 1413 1414 static char * 1415 acpi_device_id_probe(device_t bus, device_t dev, char **ids) 1416 { 1417 ACPI_HANDLE h; 1418 int i; 1419 1420 h = acpi_get_handle(dev); 1421 if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE) 1422 return (NULL); 1423 1424 /* Try to match one of the array of IDs with a HID or CID. */ 1425 for (i = 0; ids[i] != NULL; i++) { 1426 if (acpi_MatchHid(h, ids[i])) 1427 return (ids[i]); 1428 } 1429 return (NULL); 1430 } 1431 1432 static ACPI_STATUS 1433 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname, 1434 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret) 1435 { 1436 ACPI_HANDLE h; 1437 1438 if (dev == NULL) 1439 h = ACPI_ROOT_OBJECT; 1440 else if ((h = acpi_get_handle(dev)) == NULL) 1441 return (AE_BAD_PARAMETER); 1442 return (AcpiEvaluateObject(h, pathname, parameters, ret)); 1443 } 1444 1445 static int 1446 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate) 1447 { 1448 struct acpi_softc *sc; 1449 ACPI_HANDLE handle; 1450 ACPI_STATUS status; 1451 char sxd[8]; 1452 int error; 1453 1454 sc = device_get_softc(bus); 1455 handle = acpi_get_handle(dev); 1456 1457 /* 1458 * XXX If we find these devices, don't try to power them down. 1459 * The serial and IRDA ports on my T23 hang the system when 1460 * set to D3 and it appears that such legacy devices may 1461 * need special handling in their drivers. 1462 */ 1463 if (handle == NULL || 1464 acpi_MatchHid(handle, "PNP0500") || 1465 acpi_MatchHid(handle, "PNP0501") || 1466 acpi_MatchHid(handle, "PNP0502") || 1467 acpi_MatchHid(handle, "PNP0510") || 1468 acpi_MatchHid(handle, "PNP0511")) 1469 return (ENXIO); 1470 1471 /* 1472 * Override next state with the value from _SxD, if present. If no 1473 * dstate argument was provided, don't fetch the return value. 1474 */ 1475 ksnprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate); 1476 if (dstate) 1477 status = acpi_GetInteger(handle, sxd, dstate); 1478 else 1479 status = AcpiEvaluateObject(handle, sxd, NULL, NULL); 1480 1481 switch (status) { 1482 case AE_OK: 1483 error = 0; 1484 break; 1485 case AE_NOT_FOUND: 1486 error = ESRCH; 1487 break; 1488 default: 1489 error = ENXIO; 1490 break; 1491 } 1492 1493 return (error); 1494 } 1495 1496 /* Callback arg for our implementation of walking the namespace. */ 1497 struct acpi_device_scan_ctx { 1498 acpi_scan_cb_t user_fn; 1499 void *arg; 1500 ACPI_HANDLE parent; 1501 }; 1502 1503 static ACPI_STATUS 1504 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval) 1505 { 1506 struct acpi_device_scan_ctx *ctx; 1507 device_t dev, old_dev; 1508 ACPI_STATUS status; 1509 ACPI_OBJECT_TYPE type; 1510 1511 /* 1512 * Skip this device if we think we'll have trouble with it or it is 1513 * the parent where the scan began. 1514 */ 1515 ctx = (struct acpi_device_scan_ctx *)arg; 1516 if (acpi_avoid(h) || h == ctx->parent) 1517 return (AE_OK); 1518 1519 /* If this is not a valid device type (e.g., a method), skip it. */ 1520 if (ACPI_FAILURE(AcpiGetType(h, &type))) 1521 return (AE_OK); 1522 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR && 1523 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER) 1524 return (AE_OK); 1525 1526 /* 1527 * Call the user function with the current device. If it is unchanged 1528 * afterwards, return. Otherwise, we update the handle to the new dev. 1529 */ 1530 old_dev = acpi_get_device(h); 1531 dev = old_dev; 1532 status = ctx->user_fn(h, &dev, level, ctx->arg); 1533 if (ACPI_FAILURE(status) || old_dev == dev) 1534 return (status); 1535 1536 /* Remove the old child and its connection to the handle. */ 1537 if (old_dev != NULL) { 1538 device_delete_child(device_get_parent(old_dev), old_dev); 1539 AcpiDetachData(h, acpi_fake_objhandler); 1540 } 1541 1542 /* Recreate the handle association if the user created a device. */ 1543 if (dev != NULL) 1544 AcpiAttachData(h, acpi_fake_objhandler, dev); 1545 1546 return (AE_OK); 1547 } 1548 1549 static ACPI_STATUS 1550 acpi_device_scan_children(device_t bus, device_t dev, int max_depth, 1551 acpi_scan_cb_t user_fn, void *arg) 1552 { 1553 ACPI_HANDLE h; 1554 struct acpi_device_scan_ctx ctx; 1555 1556 if (acpi_disabled("children")) 1557 return (AE_OK); 1558 1559 if (dev == NULL) 1560 h = ACPI_ROOT_OBJECT; 1561 else if ((h = acpi_get_handle(dev)) == NULL) 1562 return (AE_BAD_PARAMETER); 1563 ctx.user_fn = user_fn; 1564 ctx.arg = arg; 1565 ctx.parent = h; 1566 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth, 1567 acpi_device_scan_cb, NULL, &ctx, NULL)); 1568 } 1569 1570 /* 1571 * Even though ACPI devices are not PCI, we use the PCI approach for setting 1572 * device power states since it's close enough to ACPI. 1573 */ 1574 static int 1575 acpi_set_powerstate_method(device_t bus, device_t child, int state) 1576 { 1577 ACPI_HANDLE h; 1578 ACPI_STATUS status; 1579 int error; 1580 1581 error = 0; 1582 h = acpi_get_handle(child); 1583 if (state < ACPI_STATE_D0 || state > ACPI_STATE_D3) 1584 return (EINVAL); 1585 if (h == NULL) 1586 return (0); 1587 1588 /* Ignore errors if the power methods aren't present. */ 1589 status = acpi_pwr_switch_consumer(h, state); 1590 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND 1591 && status != AE_BAD_PARAMETER) 1592 device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n", 1593 state, acpi_name(h), AcpiFormatException(status)); 1594 1595 return (error); 1596 } 1597 1598 static int 1599 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids) 1600 { 1601 int result, cid_count, i; 1602 uint32_t lid, cids[8]; 1603 1604 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1605 1606 /* 1607 * ISA-style drivers attached to ACPI may persist and 1608 * probe manually if we return ENOENT. We never want 1609 * that to happen, so don't ever return it. 1610 */ 1611 result = ENXIO; 1612 1613 /* Scan the supplied IDs for a match */ 1614 lid = acpi_isa_get_logicalid(child); 1615 cid_count = acpi_isa_get_compatid(child, cids, 8); 1616 while (ids && ids->ip_id) { 1617 if (lid == ids->ip_id) { 1618 result = 0; 1619 goto out; 1620 } 1621 for (i = 0; i < cid_count; i++) { 1622 if (cids[i] == ids->ip_id) { 1623 result = 0; 1624 goto out; 1625 } 1626 } 1627 ids++; 1628 } 1629 1630 out: 1631 if (result == 0 && ids->ip_desc) 1632 device_set_desc(child, ids->ip_desc); 1633 1634 return_VALUE (result); 1635 } 1636 1637 /* 1638 * Look for a MCFG table. If it is present, use the settings for 1639 * domain (segment) 0 to setup PCI config space access via the memory 1640 * map. 1641 */ 1642 static void 1643 acpi_enable_pcie(void) 1644 { 1645 ACPI_TABLE_HEADER *hdr; 1646 ACPI_MCFG_ALLOCATION *alloc, *end; 1647 ACPI_STATUS status; 1648 1649 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr); 1650 if (ACPI_FAILURE(status)) 1651 return; 1652 1653 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length); 1654 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1); 1655 while (alloc < end) { 1656 if (alloc->PciSegment == 0) { 1657 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber, 1658 alloc->EndBusNumber); 1659 return; 1660 } 1661 alloc++; 1662 } 1663 } 1664 1665 /* 1666 * Scan all of the ACPI namespace and attach child devices. 1667 * 1668 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and 1669 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec. 1670 * However, in violation of the spec, some systems place their PCI link 1671 * devices in \, so we have to walk the whole namespace. We check the 1672 * type of namespace nodes, so this should be ok. 1673 */ 1674 static void 1675 acpi_probe_children(device_t bus) 1676 { 1677 device_t *children; 1678 int cnt; 1679 1680 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1681 1682 /* 1683 * Scan the namespace and insert placeholders for all the devices that 1684 * we find. We also probe/attach any early devices. 1685 * 1686 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because 1687 * we want to create nodes for all devices, not just those that are 1688 * currently present. (This assumes that we don't want to create/remove 1689 * devices as they appear, which might be smarter.) 1690 */ 1691 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n")); 1692 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, 1693 acpi_probe_child, NULL, bus, NULL); 1694 /* This gets us all the children that we added from the ACPI namespace. */ 1695 device_get_children(bus, &children, &cnt); 1696 1697 /* Pre-allocate resources for our rman from any sysresource devices. */ 1698 acpi_sysres_alloc(bus); 1699 /* Create any static children by calling device identify methods. */ 1700 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n")); 1701 bus_generic_probe(bus); 1702 1703 /* Probe/attach all children, created staticly and from the namespace. */ 1704 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n")); 1705 bus_generic_attach_gpri(bus, KOBJ_GPRI_ACPI+2); 1706 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n")); 1707 bus_generic_attach_gpri(bus, KOBJ_GPRI_ACPI+1); 1708 /* Re-check device presence for previously disabled devices. */ 1709 acpi_reprobe_children(bus, children, cnt); 1710 kfree(children, M_TEMP); 1711 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "third bus_generic_attach\n")); 1712 bus_generic_attach_gpri(bus, KOBJ_GPRI_ACPI); 1713 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "fourth bus_generic_attach\n")); 1714 bus_generic_attach_gpri(bus, KOBJ_GPRI_ACPI); 1715 1716 /* 1717 * Some of these children may have attached others as part of their attach 1718 * process (eg. the root PCI bus driver), so rescan. 1719 */ 1720 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "fifth bus_generic_attach\n")); 1721 bus_generic_attach(bus); 1722 1723 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "sixth bus_generic_attach\n")); 1724 bus_generic_attach(bus); 1725 1726 /* Attach wake sysctls. */ 1727 acpi_wake_sysctl_walk(bus); 1728 1729 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n")); 1730 return_VOID; 1731 } 1732 1733 /* 1734 * Determine the probe order for a given device. 1735 */ 1736 static void 1737 acpi_probe_order(ACPI_HANDLE handle, int *order) 1738 { 1739 ACPI_OBJECT_TYPE type; 1740 1741 /* 1742 * 1. I/O port and memory system resource holders 1743 * 2. Embedded controllers (to handle early accesses) 1744 * 3. PCI Link Devices 1745 * 100000. CPUs 1746 */ 1747 AcpiGetType(handle, &type); 1748 if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02")) 1749 *order = 1; 1750 else if (acpi_MatchHid(handle, "PNP0C09")) 1751 *order = 2; 1752 else if (acpi_MatchHid(handle, "PNP0C0F")) 1753 *order = 3; 1754 else if (type == ACPI_TYPE_PROCESSOR) 1755 *order = 100000; 1756 } 1757 1758 /* 1759 * Flag a device as disabled, because it isn't present according to the 1760 * _STA method. We set the recheck instance-variable, to make sure that we 1761 * recheck the device presence at a later point. 1762 */ 1763 static void 1764 acpi_disable_not_present(device_t child) 1765 { 1766 device_disable(child); 1767 acpi_set_recheck(child, 1); 1768 } 1769 1770 /* 1771 * This rechecks the device presence for all the devices which were disabled 1772 * using acpi_disable_not_present(). 1773 */ 1774 static void 1775 acpi_reprobe_children(device_t bus, device_t *children, int cnt) 1776 { 1777 int i; 1778 1779 for (i = 0; i < cnt; i++) { 1780 device_t dev = children[i]; 1781 1782 if (device_is_enabled(dev)) 1783 continue; 1784 1785 if (acpi_get_recheck(dev)) { 1786 if (acpi_DeviceIsPresent(dev)) { 1787 acpi_set_recheck(dev, 0); 1788 device_enable(dev); 1789 /* 1790 * Currently we parse the resources for every 1791 * device at the first time, when we see 1792 * that it is present. 1793 */ 1794 acpi_parse_resources(dev, acpi_get_handle(dev), 1795 &acpi_res_parse_set, NULL); 1796 } 1797 } 1798 } 1799 } 1800 1801 /* 1802 * Evaluate a child device and determine whether we might attach a device to 1803 * it. 1804 */ 1805 static ACPI_STATUS 1806 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 1807 { 1808 struct acpi_prw_data prw; 1809 ACPI_OBJECT_TYPE type; 1810 ACPI_HANDLE h; 1811 device_t bus, child; 1812 int order; 1813 char *handle_str; 1814 1815 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 1816 1817 if (acpi_disabled("children")) 1818 return_ACPI_STATUS (AE_OK); 1819 1820 /* Skip this device if we think we'll have trouble with it. */ 1821 if (acpi_avoid(handle)) 1822 return_ACPI_STATUS (AE_OK); 1823 1824 bus = (device_t)context; 1825 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) { 1826 handle_str = acpi_name(handle); 1827 switch (type) { 1828 case ACPI_TYPE_DEVICE: 1829 /* 1830 * Since we scan from \, be sure to skip system scope objects. 1831 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around 1832 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run 1833 * during the intialization and \_TZ_ is to support Notify() on it. 1834 */ 1835 if (strcmp(handle_str, "\\_SB_") == 0 || 1836 strcmp(handle_str, "\\_TZ_") == 0) 1837 break; 1838 1839 if (acpi_parse_prw(handle, &prw) == 0) 1840 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit); 1841 1842 /* FALLTHROUGH */ 1843 case ACPI_TYPE_PROCESSOR: 1844 case ACPI_TYPE_THERMAL: 1845 case ACPI_TYPE_POWER: 1846 /* 1847 * Create a placeholder device for this node. Sort the 1848 * placeholder so that the probe/attach passes will run 1849 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER 1850 * are reserved for special objects (i.e., system 1851 * resources). CPU devices have a very high order to 1852 * ensure they are probed after other devices. 1853 */ 1854 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str)); 1855 order = level * 10 + 100; 1856 acpi_probe_order(handle, &order); 1857 child = BUS_ADD_CHILD(bus, bus, order, NULL, -1); 1858 if (child == NULL) 1859 break; 1860 1861 /* Associate the handle with the device_t and vice versa. */ 1862 acpi_set_handle(child, handle); 1863 AcpiAttachData(handle, acpi_fake_objhandler, child); 1864 1865 /* 1866 * Check that the device is present. If it's not present, 1867 * leave it disabled (so that we have a device_t attached to 1868 * the handle, but we don't probe it). 1869 * 1870 * XXX PCI link devices sometimes report "present" but not 1871 * "functional" (i.e. if disabled). Go ahead and probe them 1872 * anyway since we may enable them later. 1873 */ 1874 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) { 1875 /* Never disable PCI link devices. */ 1876 if (acpi_MatchHid(handle, "PNP0C0F")) 1877 break; 1878 /* 1879 * Docking stations should remain enabled since the system 1880 * may be undocked at boot. 1881 */ 1882 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h))) 1883 break; 1884 1885 acpi_disable_not_present(child); 1886 break; 1887 } 1888 1889 /* 1890 * Get the device's resource settings and attach them. 1891 * Note that if the device has _PRS but no _CRS, we need 1892 * to decide when it's appropriate to try to configure the 1893 * device. Ignore the return value here; it's OK for the 1894 * device not to have any resources. 1895 */ 1896 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL); 1897 break; 1898 } 1899 } 1900 1901 return_ACPI_STATUS (AE_OK); 1902 } 1903 1904 /* 1905 * AcpiAttachData() requires an object handler but never uses it. This is a 1906 * placeholder object handler so we can store a device_t in an ACPI_HANDLE. 1907 */ 1908 void 1909 acpi_fake_objhandler(ACPI_HANDLE h, void *data) 1910 { 1911 } 1912 1913 static void 1914 acpi_shutdown_final(void *arg, int howto) 1915 { 1916 struct acpi_softc *sc; 1917 ACPI_STATUS status; 1918 1919 /* 1920 * XXX Shutdown code should only run on the BSP (cpuid 0). 1921 * Some chipsets do not power off the system correctly if called from 1922 * an AP. 1923 */ 1924 sc = arg; 1925 if ((howto & RB_POWEROFF) != 0) { 1926 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1927 if (ACPI_FAILURE(status)) { 1928 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 1929 AcpiFormatException(status)); 1930 return; 1931 } 1932 device_printf(sc->acpi_dev, "Powering system off\n"); 1933 ACPI_DISABLE_IRQS(); 1934 status = AcpiEnterSleepState(ACPI_STATE_S5); 1935 if (ACPI_FAILURE(status)) { 1936 device_printf(sc->acpi_dev, "power-off failed - %s\n", 1937 AcpiFormatException(status)); 1938 } else { 1939 DELAY(1000000); 1940 device_printf(sc->acpi_dev, "power-off failed - timeout\n"); 1941 } 1942 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) { 1943 /* Reboot using the reset register. */ 1944 status = AcpiReset(); 1945 if (ACPI_FAILURE(status)) { 1946 if (status != AE_NOT_EXIST) 1947 device_printf(sc->acpi_dev, "reset failed - %s\n", 1948 AcpiFormatException(status)); 1949 } else { 1950 DELAY(1000000); 1951 device_printf(sc->acpi_dev, "reset failed - timeout\n"); 1952 } 1953 } else if (sc->acpi_do_disable && panicstr == NULL) { 1954 /* 1955 * Only disable ACPI if the user requested. On some systems, writing 1956 * the disable value to SMI_CMD hangs the system. 1957 */ 1958 device_printf(sc->acpi_dev, "Shutting down\n"); 1959 AcpiTerminate(); 1960 } 1961 } 1962 1963 static void 1964 acpi_enable_fixed_events(struct acpi_softc *sc) 1965 { 1966 static int first_time = 1; 1967 1968 /* Enable and clear fixed events and install handlers. */ 1969 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) { 1970 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1971 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON, 1972 acpi_event_power_button_sleep, sc); 1973 if (first_time) 1974 device_printf(sc->acpi_dev, "Power Button (fixed)\n"); 1975 } 1976 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) { 1977 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1978 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON, 1979 acpi_event_sleep_button_sleep, sc); 1980 if (first_time) 1981 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n"); 1982 } 1983 1984 first_time = 0; 1985 } 1986 1987 /* 1988 * Returns true if the device is actually present and should 1989 * be attached to. This requires the present, enabled, UI-visible 1990 * and diagnostics-passed bits to be set. 1991 */ 1992 BOOLEAN 1993 acpi_DeviceIsPresent(device_t dev) 1994 { 1995 ACPI_HANDLE h; 1996 UINT32 s; 1997 ACPI_STATUS status; 1998 1999 h = acpi_get_handle(dev); 2000 if (h == NULL) 2001 return (FALSE); 2002 status = acpi_GetInteger(h, "_STA", &s); 2003 2004 /* 2005 * If no _STA method or if it failed, then assume that 2006 * the device is present. 2007 */ 2008 if (ACPI_FAILURE(status)) 2009 return (TRUE); 2010 2011 return (ACPI_DEVICE_PRESENT(s) ? TRUE : FALSE); 2012 } 2013 2014 /* 2015 * Returns true if the battery is actually present and inserted. 2016 */ 2017 BOOLEAN 2018 acpi_BatteryIsPresent(device_t dev) 2019 { 2020 ACPI_HANDLE h; 2021 UINT32 s; 2022 ACPI_STATUS status; 2023 2024 h = acpi_get_handle(dev); 2025 if (h == NULL) 2026 return (FALSE); 2027 status = acpi_GetInteger(h, "_STA", &s); 2028 2029 /* 2030 * If no _STA method or if it failed, then assume that 2031 * the device is present. 2032 */ 2033 if (ACPI_FAILURE(status)) 2034 return (TRUE); 2035 2036 return (ACPI_BATTERY_PRESENT(s) ? TRUE : FALSE); 2037 } 2038 2039 /* 2040 * Match a HID string against a handle 2041 */ 2042 BOOLEAN 2043 acpi_MatchHid(ACPI_HANDLE h, const char *hid) 2044 { 2045 ACPI_DEVICE_INFO *devinfo; 2046 int ret, i; 2047 2048 ret = FALSE; 2049 if (hid == NULL || h == NULL || 2050 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 2051 return (ret); 2052 2053 if ((devinfo->Valid & ACPI_VALID_HID) != 0 && 2054 strcmp(hid, devinfo->HardwareId.String) == 0) 2055 ret = TRUE; 2056 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) { 2057 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) { 2058 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) { 2059 ret = TRUE; 2060 break; 2061 } 2062 } 2063 } 2064 2065 AcpiOsFree(devinfo); 2066 return (ret); 2067 } 2068 2069 /* 2070 * Match a UID string against a handle 2071 */ 2072 BOOLEAN 2073 acpi_MatchUid(ACPI_HANDLE h, const char *uid) 2074 { 2075 ACPI_DEVICE_INFO *devinfo; 2076 int ret; 2077 2078 ret = FALSE; 2079 if (uid == NULL || h == NULL || 2080 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 2081 return (ret); 2082 2083 if ((devinfo->Valid & ACPI_VALID_UID) != 0 && 2084 strcmp(uid, devinfo->UniqueId.String) == 0) 2085 ret = TRUE; 2086 2087 AcpiOsFree(devinfo); 2088 return (ret); 2089 } 2090 2091 /* 2092 * Return the handle of a named object within our scope, ie. that of (parent) 2093 * or one if its parents. 2094 */ 2095 ACPI_STATUS 2096 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result) 2097 { 2098 ACPI_HANDLE r; 2099 ACPI_STATUS status; 2100 2101 /* Walk back up the tree to the root */ 2102 for (;;) { 2103 status = AcpiGetHandle(parent, path, &r); 2104 if (ACPI_SUCCESS(status)) { 2105 *result = r; 2106 return (AE_OK); 2107 } 2108 /* XXX Return error here? */ 2109 if (status != AE_NOT_FOUND) 2110 return (AE_OK); 2111 if (ACPI_FAILURE(AcpiGetParent(parent, &r))) 2112 return (AE_NOT_FOUND); 2113 parent = r; 2114 } 2115 } 2116 2117 /* 2118 * Allocate a buffer with a preset data size. 2119 */ 2120 ACPI_BUFFER * 2121 acpi_AllocBuffer(int size) 2122 { 2123 ACPI_BUFFER *buf; 2124 2125 if ((buf = kmalloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL) 2126 return (NULL); 2127 buf->Length = size; 2128 buf->Pointer = (void *)(buf + 1); 2129 return (buf); 2130 } 2131 2132 ACPI_STATUS 2133 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number) 2134 { 2135 ACPI_OBJECT arg1; 2136 ACPI_OBJECT_LIST args; 2137 2138 arg1.Type = ACPI_TYPE_INTEGER; 2139 arg1.Integer.Value = number; 2140 args.Count = 1; 2141 args.Pointer = &arg1; 2142 2143 return (AcpiEvaluateObject(handle, path, &args, NULL)); 2144 } 2145 2146 /* 2147 * Evaluate a path that should return an integer. 2148 */ 2149 ACPI_STATUS 2150 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number) 2151 { 2152 ACPI_STATUS status; 2153 ACPI_BUFFER buf; 2154 ACPI_OBJECT param; 2155 2156 if (handle == NULL) 2157 handle = ACPI_ROOT_OBJECT; 2158 2159 /* 2160 * Assume that what we've been pointed at is an Integer object, or 2161 * a method that will return an Integer. 2162 */ 2163 buf.Pointer = ¶m; 2164 buf.Length = sizeof(param); 2165 status = AcpiEvaluateObject(handle, path, NULL, &buf); 2166 if (ACPI_SUCCESS(status)) { 2167 if (param.Type == ACPI_TYPE_INTEGER) 2168 *number = param.Integer.Value; 2169 else 2170 status = AE_TYPE; 2171 } 2172 2173 /* 2174 * In some applications, a method that's expected to return an Integer 2175 * may instead return a Buffer (probably to simplify some internal 2176 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer, 2177 * convert it into an Integer as best we can. 2178 * 2179 * This is a hack. 2180 */ 2181 if (status == AE_BUFFER_OVERFLOW) { 2182 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) { 2183 status = AE_NO_MEMORY; 2184 } else { 2185 status = AcpiEvaluateObject(handle, path, NULL, &buf); 2186 if (ACPI_SUCCESS(status)) 2187 status = acpi_ConvertBufferToInteger(&buf, number); 2188 AcpiOsFree(buf.Pointer); 2189 } 2190 } 2191 return (status); 2192 } 2193 2194 ACPI_STATUS 2195 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number) 2196 { 2197 ACPI_OBJECT *p; 2198 UINT8 *val; 2199 int i; 2200 2201 p = (ACPI_OBJECT *)bufp->Pointer; 2202 if (p->Type == ACPI_TYPE_INTEGER) { 2203 *number = p->Integer.Value; 2204 return (AE_OK); 2205 } 2206 if (p->Type != ACPI_TYPE_BUFFER) 2207 return (AE_TYPE); 2208 if (p->Buffer.Length > sizeof(int)) 2209 return (AE_BAD_DATA); 2210 2211 *number = 0; 2212 val = p->Buffer.Pointer; 2213 for (i = 0; i < p->Buffer.Length; i++) 2214 *number += val[i] << (i * 8); 2215 return (AE_OK); 2216 } 2217 2218 /* 2219 * Iterate over the elements of an a package object, calling the supplied 2220 * function for each element. 2221 * 2222 * XXX possible enhancement might be to abort traversal on error. 2223 */ 2224 ACPI_STATUS 2225 acpi_ForeachPackageObject(ACPI_OBJECT *pkg, 2226 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg) 2227 { 2228 ACPI_OBJECT *comp; 2229 int i; 2230 2231 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE) 2232 return (AE_BAD_PARAMETER); 2233 2234 /* Iterate over components */ 2235 i = 0; 2236 comp = pkg->Package.Elements; 2237 for (; i < pkg->Package.Count; i++, comp++) 2238 func(comp, arg); 2239 2240 return (AE_OK); 2241 } 2242 2243 /* 2244 * Find the (index)th resource object in a set. 2245 */ 2246 ACPI_STATUS 2247 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp) 2248 { 2249 ACPI_RESOURCE *rp; 2250 int i; 2251 2252 rp = (ACPI_RESOURCE *)buf->Pointer; 2253 i = index; 2254 while (i-- > 0) { 2255 /* Range check */ 2256 if (rp > (ACPI_RESOURCE *)((uint8_t *)buf->Pointer + buf->Length)) 2257 return (AE_BAD_PARAMETER); 2258 2259 /* Check for terminator */ 2260 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0) 2261 return (AE_NOT_FOUND); 2262 rp = ACPI_NEXT_RESOURCE(rp); 2263 } 2264 if (resp != NULL) 2265 *resp = rp; 2266 2267 return (AE_OK); 2268 } 2269 2270 /* 2271 * Append an ACPI_RESOURCE to an ACPI_BUFFER. 2272 * 2273 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER 2274 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible 2275 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of 2276 * resources. 2277 */ 2278 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512 2279 2280 ACPI_STATUS 2281 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res) 2282 { 2283 ACPI_RESOURCE *rp; 2284 void *newp; 2285 2286 /* Initialise the buffer if necessary. */ 2287 if (buf->Pointer == NULL) { 2288 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE; 2289 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL) 2290 return (AE_NO_MEMORY); 2291 rp = (ACPI_RESOURCE *)buf->Pointer; 2292 rp->Type = ACPI_RESOURCE_TYPE_END_TAG; 2293 rp->Length = ACPI_RS_SIZE_MIN; 2294 } 2295 if (res == NULL) 2296 return (AE_OK); 2297 2298 /* 2299 * Scan the current buffer looking for the terminator. 2300 * This will either find the terminator or hit the end 2301 * of the buffer and return an error. 2302 */ 2303 rp = (ACPI_RESOURCE *)buf->Pointer; 2304 for (;;) { 2305 /* Range check, don't go outside the buffer */ 2306 if (rp >= (ACPI_RESOURCE *)((uint8_t *)buf->Pointer + buf->Length)) 2307 return (AE_BAD_PARAMETER); 2308 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0) 2309 break; 2310 rp = ACPI_NEXT_RESOURCE(rp); 2311 } 2312 2313 /* 2314 * Check the size of the buffer and expand if required. 2315 * 2316 * Required size is: 2317 * size of existing resources before terminator + 2318 * size of new resource and header + 2319 * size of terminator. 2320 * 2321 * Note that this loop should really only run once, unless 2322 * for some reason we are stuffing a *really* huge resource. 2323 */ 2324 while ((((uint8_t *)rp - (uint8_t *)buf->Pointer) + 2325 res->Length + ACPI_RS_SIZE_NO_DATA + 2326 ACPI_RS_SIZE_MIN) >= buf->Length) { 2327 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL) 2328 return (AE_NO_MEMORY); 2329 bcopy(buf->Pointer, newp, buf->Length); 2330 rp = (ACPI_RESOURCE *)((uint8_t *)newp + 2331 ((uint8_t *)rp - (uint8_t *)buf->Pointer)); 2332 AcpiOsFree(buf->Pointer); 2333 buf->Pointer = newp; 2334 buf->Length += buf->Length; 2335 } 2336 2337 /* Insert the new resource. */ 2338 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA); 2339 2340 /* And add the terminator. */ 2341 rp = ACPI_NEXT_RESOURCE(rp); 2342 rp->Type = ACPI_RESOURCE_TYPE_END_TAG; 2343 rp->Length = ACPI_RS_SIZE_MIN; 2344 2345 return (AE_OK); 2346 } 2347 2348 /* 2349 * Set interrupt model. 2350 */ 2351 ACPI_STATUS 2352 acpi_SetIntrModel(int model) 2353 { 2354 2355 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model)); 2356 } 2357 2358 /* 2359 * DEPRECATED. This interface has serious deficiencies and will be 2360 * removed. 2361 * 2362 * Immediately enter the sleep state. In the old model, acpiconf(8) ran 2363 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this. 2364 */ 2365 ACPI_STATUS 2366 acpi_SetSleepState(struct acpi_softc *sc, int state) 2367 { 2368 static int once; 2369 2370 if (!once) { 2371 device_printf(sc->acpi_dev, 2372 "warning: acpi_SetSleepState() deprecated, need to update your software\n"); 2373 once = 1; 2374 } 2375 return (acpi_EnterSleepState(sc, state)); 2376 } 2377 2378 static void 2379 acpi_sleep_force(void *arg) 2380 { 2381 struct acpi_softc *sc; 2382 2383 sc = arg; 2384 device_printf(sc->acpi_dev, 2385 "suspend request timed out, forcing sleep now\n"); 2386 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) 2387 device_printf(sc->acpi_dev, "force sleep state S%d failed\n", 2388 sc->acpi_next_sstate); 2389 } 2390 2391 /* 2392 * Request that the system enter the given suspend state. All /dev/apm 2393 * devices and devd(8) will be notified. Userland then has a chance to 2394 * save state and acknowledge the request. The system sleeps once all 2395 * acks are in. 2396 */ 2397 int 2398 acpi_ReqSleepState(struct acpi_softc *sc, int state) 2399 { 2400 #ifdef notyet 2401 struct apm_clone_data *clone; 2402 #endif 2403 2404 if (state < ACPI_STATE_S1 || state > ACPI_STATE_S5) 2405 return (EINVAL); 2406 2407 /* S5 (soft-off) should be entered directly with no waiting. */ 2408 if (state == ACPI_STATE_S5) { 2409 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, state))) 2410 return (0); 2411 else 2412 return (ENXIO); 2413 } 2414 2415 /* This platform does not support acpi suspend/resume. */ 2416 return (EOPNOTSUPP); 2417 2418 /* If a suspend request is already in progress, just return. */ 2419 ACPI_LOCK(acpi); 2420 if (sc->acpi_next_sstate != 0) { 2421 ACPI_UNLOCK(acpi); 2422 return (0); 2423 } 2424 2425 /* Record the pending state and notify all apm devices. */ 2426 sc->acpi_next_sstate = state; 2427 #if 0 2428 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) { 2429 clone->notify_status = APM_EV_NONE; 2430 if ((clone->flags & ACPI_EVF_DEVD) == 0) { 2431 KNOTE(&clone->sel_read.si_note, 0); 2432 } 2433 } 2434 #endif 2435 2436 /* If devd(8) is not running, immediately enter the sleep state. */ 2437 if (devctl_process_running() == FALSE) { 2438 ACPI_UNLOCK(acpi); 2439 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) { 2440 return (0); 2441 } else { 2442 return (ENXIO); 2443 } 2444 } 2445 2446 /* Now notify devd(8) also. */ 2447 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state); 2448 2449 /* 2450 * Set a timeout to fire if userland doesn't ack the suspend request 2451 * in time. This way we still eventually go to sleep if we were 2452 * overheating or running low on battery, even if userland is hung. 2453 * We cancel this timeout once all userland acks are in or the 2454 * suspend request is aborted. 2455 */ 2456 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc); 2457 ACPI_UNLOCK(acpi); 2458 2459 return (0); 2460 } 2461 2462 /* 2463 * Acknowledge (or reject) a pending sleep state. The caller has 2464 * prepared for suspend and is now ready for it to proceed. If the 2465 * error argument is non-zero, it indicates suspend should be cancelled 2466 * and gives an errno value describing why. Once all votes are in, 2467 * we suspend the system. 2468 */ 2469 int 2470 acpi_AckSleepState(struct apm_clone_data *clone, int error) 2471 { 2472 struct acpi_softc *sc; 2473 int ret, sleeping; 2474 2475 /* This platform does not support acpi suspend/resume. */ 2476 return (EOPNOTSUPP); 2477 2478 /* If no pending sleep state, return an error. */ 2479 ACPI_LOCK(acpi); 2480 sc = clone->acpi_sc; 2481 if (sc->acpi_next_sstate == 0) { 2482 ACPI_UNLOCK(acpi); 2483 return (ENXIO); 2484 } 2485 2486 /* Caller wants to abort suspend process. */ 2487 if (error) { 2488 sc->acpi_next_sstate = 0; 2489 callout_stop(&sc->susp_force_to); 2490 device_printf(sc->acpi_dev, 2491 "listener on %s cancelled the pending suspend\n", 2492 devtoname(clone->cdev)); 2493 ACPI_UNLOCK(acpi); 2494 return (0); 2495 } 2496 2497 /* 2498 * Mark this device as acking the suspend request. Then, walk through 2499 * all devices, seeing if they agree yet. We only count devices that 2500 * are writable since read-only devices couldn't ack the request. 2501 */ 2502 clone->notify_status = APM_EV_ACKED; 2503 sleeping = TRUE; 2504 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) { 2505 if ((clone->flags & ACPI_EVF_WRITE) != 0 && 2506 clone->notify_status != APM_EV_ACKED) { 2507 sleeping = FALSE; 2508 break; 2509 } 2510 } 2511 2512 /* If all devices have voted "yes", we will suspend now. */ 2513 if (sleeping) 2514 callout_stop(&sc->susp_force_to); 2515 ACPI_UNLOCK(acpi); 2516 ret = 0; 2517 if (sleeping) { 2518 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) 2519 ret = ENODEV; 2520 } 2521 2522 return (ret); 2523 } 2524 2525 static void 2526 acpi_sleep_enable(void *arg) 2527 { 2528 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0; 2529 } 2530 2531 enum acpi_sleep_state { 2532 ACPI_SS_NONE, 2533 ACPI_SS_GPE_SET, 2534 ACPI_SS_DEV_SUSPEND, 2535 ACPI_SS_SLP_PREP, 2536 ACPI_SS_SLEPT, 2537 }; 2538 2539 /* 2540 * Enter the desired system sleep state. 2541 * 2542 * Currently we support S1-S5 but S4 is only S4BIOS 2543 */ 2544 static ACPI_STATUS 2545 acpi_EnterSleepState(struct acpi_softc *sc, int state) 2546 { 2547 ACPI_STATUS status; 2548 UINT8 TypeA; 2549 UINT8 TypeB; 2550 enum acpi_sleep_state slp_state; 2551 2552 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 2553 2554 /* Re-entry once we're suspending is not allowed. */ 2555 status = AE_OK; 2556 ACPI_LOCK(acpi); 2557 if (sc->acpi_sleep_disabled) { 2558 ACPI_UNLOCK(acpi); 2559 device_printf(sc->acpi_dev, 2560 "suspend request ignored (not ready yet)\n"); 2561 return (AE_ERROR); 2562 } 2563 sc->acpi_sleep_disabled = 1; 2564 ACPI_UNLOCK(acpi); 2565 2566 /* 2567 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE 2568 * drivers need this. 2569 */ 2570 //get_mplock(); 2571 2572 slp_state = ACPI_SS_NONE; 2573 switch (state) { 2574 case ACPI_STATE_S1: 2575 case ACPI_STATE_S2: 2576 case ACPI_STATE_S3: 2577 case ACPI_STATE_S4: 2578 status = AcpiGetSleepTypeData(state, &TypeA, &TypeB); 2579 if (status == AE_NOT_FOUND) { 2580 device_printf(sc->acpi_dev, 2581 "Sleep state S%d not supported by BIOS\n", state); 2582 break; 2583 } else if (ACPI_FAILURE(status)) { 2584 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n", 2585 AcpiFormatException(status)); 2586 break; 2587 } 2588 2589 sc->acpi_sstate = state; 2590 2591 /* Enable any GPEs as appropriate and requested by the user. */ 2592 acpi_wake_prep_walk(state); 2593 slp_state = ACPI_SS_GPE_SET; 2594 2595 /* 2596 * Inform all devices that we are going to sleep. If at least one 2597 * device fails, DEVICE_SUSPEND() automatically resumes the tree. 2598 * 2599 * XXX Note that a better two-pass approach with a 'veto' pass 2600 * followed by a "real thing" pass would be better, but the current 2601 * bus interface does not provide for this. 2602 */ 2603 if (DEVICE_SUSPEND(root_bus) != 0) { 2604 device_printf(sc->acpi_dev, "device_suspend failed\n"); 2605 break; 2606 } 2607 slp_state = ACPI_SS_DEV_SUSPEND; 2608 2609 /* If testing device suspend only, back out of everything here. */ 2610 if (acpi_susp_bounce) 2611 break; 2612 2613 status = AcpiEnterSleepStatePrep(state); 2614 if (ACPI_FAILURE(status)) { 2615 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", 2616 AcpiFormatException(status)); 2617 break; 2618 } 2619 slp_state = ACPI_SS_SLP_PREP; 2620 2621 if (sc->acpi_sleep_delay > 0) 2622 DELAY(sc->acpi_sleep_delay * 1000000); 2623 2624 if (state != ACPI_STATE_S1) { 2625 acpi_sleep_machdep(sc, state); 2626 2627 /* Re-enable ACPI hardware on wakeup from sleep state 4. */ 2628 if (state == ACPI_STATE_S4) 2629 AcpiEnable(); 2630 } else { 2631 ACPI_DISABLE_IRQS(); 2632 status = AcpiEnterSleepState(state); 2633 if (ACPI_FAILURE(status)) { 2634 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", 2635 AcpiFormatException(status)); 2636 break; 2637 } 2638 } 2639 slp_state = ACPI_SS_SLEPT; 2640 break; 2641 case ACPI_STATE_S5: 2642 /* 2643 * Shut down cleanly and power off. This will call us back through the 2644 * shutdown handlers. 2645 */ 2646 shutdown_nice(RB_POWEROFF); 2647 break; 2648 case ACPI_STATE_S0: 2649 default: 2650 status = AE_BAD_PARAMETER; 2651 break; 2652 } 2653 2654 /* 2655 * Back out state according to how far along we got in the suspend 2656 * process. This handles both the error and success cases. 2657 */ 2658 sc->acpi_next_sstate = 0; 2659 if (slp_state >= ACPI_SS_GPE_SET) { 2660 acpi_wake_prep_walk(state); 2661 sc->acpi_sstate = ACPI_STATE_S0; 2662 } 2663 if (slp_state >= ACPI_SS_SLP_PREP) 2664 AcpiLeaveSleepState(state); 2665 if (slp_state >= ACPI_SS_DEV_SUSPEND) 2666 DEVICE_RESUME(root_bus); 2667 if (slp_state >= ACPI_SS_SLEPT) 2668 acpi_enable_fixed_events(sc); 2669 2670 /* Allow another sleep request after a while. */ 2671 /* XXX: needs timeout */ 2672 if (state != ACPI_STATE_S5) 2673 acpi_sleep_enable(sc); 2674 2675 /* Run /etc/rc.resume after we are back. */ 2676 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state); 2677 2678 //rel_mplock(); 2679 2680 return_ACPI_STATUS (status); 2681 } 2682 2683 /* Enable or disable the device's GPE. */ 2684 int 2685 acpi_wake_set_enable(device_t dev, int enable) 2686 { 2687 struct acpi_prw_data prw; 2688 ACPI_STATUS status; 2689 int flags; 2690 2691 /* Make sure the device supports waking the system and get the GPE. */ 2692 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0) 2693 return (ENXIO); 2694 2695 flags = acpi_get_flags(dev); 2696 if (enable) { 2697 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, 2698 ACPI_GPE_ENABLE); 2699 if (ACPI_FAILURE(status)) { 2700 device_printf(dev, "enable wake failed\n"); 2701 return (ENXIO); 2702 } 2703 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED); 2704 } else { 2705 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, 2706 ACPI_GPE_DISABLE); 2707 if (ACPI_FAILURE(status)) { 2708 device_printf(dev, "disable wake failed\n"); 2709 return (ENXIO); 2710 } 2711 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED); 2712 } 2713 2714 return (0); 2715 } 2716 2717 static int 2718 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate) 2719 { 2720 struct acpi_prw_data prw; 2721 device_t dev; 2722 2723 /* Check that this is a wake-capable device and get its GPE. */ 2724 if (acpi_parse_prw(handle, &prw) != 0) 2725 return (ENXIO); 2726 dev = acpi_get_device(handle); 2727 2728 /* 2729 * The destination sleep state must be less than (i.e., higher power) 2730 * or equal to the value specified by _PRW. If this GPE cannot be 2731 * enabled for the next sleep state, then disable it. If it can and 2732 * the user requested it be enabled, turn on any required power resources 2733 * and set _PSW. 2734 */ 2735 if (sstate > prw.lowest_wake) { 2736 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE); 2737 if (bootverbose) 2738 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n", 2739 acpi_name(handle), sstate); 2740 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) { 2741 acpi_pwr_wake_enable(handle, 1); 2742 acpi_SetInteger(handle, "_PSW", 1); 2743 if (bootverbose) 2744 device_printf(dev, "wake_prep enabled for %s (S%d)\n", 2745 acpi_name(handle), sstate); 2746 } 2747 2748 return (0); 2749 } 2750 2751 static int 2752 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate) 2753 { 2754 struct acpi_prw_data prw; 2755 device_t dev; 2756 2757 /* 2758 * Check that this is a wake-capable device and get its GPE. Return 2759 * now if the user didn't enable this device for wake. 2760 */ 2761 if (acpi_parse_prw(handle, &prw) != 0) 2762 return (ENXIO); 2763 dev = acpi_get_device(handle); 2764 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0) 2765 return (0); 2766 2767 /* 2768 * If this GPE couldn't be enabled for the previous sleep state, it was 2769 * disabled before going to sleep so re-enable it. If it was enabled, 2770 * clear _PSW and turn off any power resources it used. 2771 */ 2772 if (sstate > prw.lowest_wake) { 2773 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE); 2774 if (bootverbose) 2775 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle)); 2776 } else { 2777 acpi_SetInteger(handle, "_PSW", 0); 2778 acpi_pwr_wake_enable(handle, 0); 2779 if (bootverbose) 2780 device_printf(dev, "run_prep cleaned up for %s\n", 2781 acpi_name(handle)); 2782 } 2783 2784 return (0); 2785 } 2786 2787 static ACPI_STATUS 2788 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status) 2789 { 2790 int sstate; 2791 2792 /* If suspending, run the sleep prep function, otherwise wake. */ 2793 sstate = *(int *)context; 2794 if (AcpiGbl_SystemAwakeAndRunning) 2795 acpi_wake_sleep_prep(handle, sstate); 2796 else 2797 acpi_wake_run_prep(handle, sstate); 2798 return (AE_OK); 2799 } 2800 2801 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */ 2802 static int 2803 acpi_wake_prep_walk(int sstate) 2804 { 2805 ACPI_HANDLE sb_handle; 2806 2807 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) { 2808 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100, 2809 acpi_wake_prep, NULL, &sstate, NULL); 2810 } 2811 return (0); 2812 } 2813 2814 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */ 2815 static int 2816 acpi_wake_sysctl_walk(device_t dev) 2817 { 2818 #ifdef notyet 2819 int error, i, numdevs; 2820 device_t *devlist; 2821 device_t child; 2822 ACPI_STATUS status; 2823 2824 error = device_get_children(dev, &devlist, &numdevs); 2825 if (error != 0 || numdevs == 0) { 2826 if (numdevs == 0) 2827 kfree(devlist, M_TEMP); 2828 return (error); 2829 } 2830 for (i = 0; i < numdevs; i++) { 2831 child = devlist[i]; 2832 acpi_wake_sysctl_walk(child); 2833 if (!device_is_attached(child)) 2834 continue; 2835 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL); 2836 if (ACPI_SUCCESS(status)) { 2837 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child), 2838 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO, 2839 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0, 2840 acpi_wake_set_sysctl, "I", "Device set to wake the system"); 2841 } 2842 } 2843 kfree(devlist, M_TEMP); 2844 #endif 2845 2846 return (0); 2847 } 2848 2849 #ifdef notyet 2850 /* Enable or disable wake from userland. */ 2851 static int 2852 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS) 2853 { 2854 int enable, error; 2855 device_t dev; 2856 2857 dev = (device_t)arg1; 2858 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0; 2859 2860 error = sysctl_handle_int(oidp, &enable, 0, req); 2861 if (error != 0 || req->newptr == NULL) 2862 return (error); 2863 if (enable != 0 && enable != 1) 2864 return (EINVAL); 2865 2866 return (acpi_wake_set_enable(dev, enable)); 2867 } 2868 #endif 2869 2870 /* Parse a device's _PRW into a structure. */ 2871 int 2872 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw) 2873 { 2874 ACPI_STATUS status; 2875 ACPI_BUFFER prw_buffer; 2876 ACPI_OBJECT *res, *res2; 2877 int error, i, power_count; 2878 2879 if (h == NULL || prw == NULL) 2880 return (EINVAL); 2881 2882 /* 2883 * The _PRW object (7.2.9) is only required for devices that have the 2884 * ability to wake the system from a sleeping state. 2885 */ 2886 error = EINVAL; 2887 prw_buffer.Pointer = NULL; 2888 prw_buffer.Length = ACPI_ALLOCATE_BUFFER; 2889 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer); 2890 if (ACPI_FAILURE(status)) 2891 return (ENOENT); 2892 res = (ACPI_OBJECT *)prw_buffer.Pointer; 2893 if (res == NULL) 2894 return (ENOENT); 2895 if (!ACPI_PKG_VALID(res, 2)) 2896 goto out; 2897 2898 /* 2899 * Element 1 of the _PRW object: 2900 * The lowest power system sleeping state that can be entered while still 2901 * providing wake functionality. The sleeping state being entered must 2902 * be less than (i.e., higher power) or equal to this value. 2903 */ 2904 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0) 2905 goto out; 2906 2907 /* 2908 * Element 0 of the _PRW object: 2909 */ 2910 switch (res->Package.Elements[0].Type) { 2911 case ACPI_TYPE_INTEGER: 2912 /* 2913 * If the data type of this package element is numeric, then this 2914 * _PRW package element is the bit index in the GPEx_EN, in the 2915 * GPE blocks described in the FADT, of the enable bit that is 2916 * enabled for the wake event. 2917 */ 2918 prw->gpe_handle = NULL; 2919 prw->gpe_bit = res->Package.Elements[0].Integer.Value; 2920 error = 0; 2921 break; 2922 case ACPI_TYPE_PACKAGE: 2923 /* 2924 * If the data type of this package element is a package, then this 2925 * _PRW package element is itself a package containing two 2926 * elements. The first is an object reference to the GPE Block 2927 * device that contains the GPE that will be triggered by the wake 2928 * event. The second element is numeric and it contains the bit 2929 * index in the GPEx_EN, in the GPE Block referenced by the 2930 * first element in the package, of the enable bit that is enabled for 2931 * the wake event. 2932 * 2933 * For example, if this field is a package then it is of the form: 2934 * Package() {\_SB.PCI0.ISA.GPE, 2} 2935 */ 2936 res2 = &res->Package.Elements[0]; 2937 if (!ACPI_PKG_VALID(res2, 2)) 2938 goto out; 2939 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]); 2940 if (prw->gpe_handle == NULL) 2941 goto out; 2942 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0) 2943 goto out; 2944 error = 0; 2945 break; 2946 default: 2947 goto out; 2948 } 2949 2950 /* Elements 2 to N of the _PRW object are power resources. */ 2951 power_count = res->Package.Count - 2; 2952 if (power_count > ACPI_PRW_MAX_POWERRES) { 2953 kprintf("ACPI device %s has too many power resources\n", acpi_name(h)); 2954 power_count = 0; 2955 } 2956 prw->power_res_count = power_count; 2957 for (i = 0; i < power_count; i++) 2958 prw->power_res[i] = res->Package.Elements[i]; 2959 2960 out: 2961 if (prw_buffer.Pointer != NULL) 2962 AcpiOsFree(prw_buffer.Pointer); 2963 return (error); 2964 } 2965 2966 /* 2967 * ACPI Event Handlers 2968 */ 2969 2970 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */ 2971 2972 static void 2973 acpi_system_eventhandler_sleep(void *arg, int state) 2974 { 2975 struct acpi_softc *sc; 2976 int ret; 2977 2978 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 2979 2980 sc = arg; 2981 2982 /* Check if button action is disabled. */ 2983 if (state == ACPI_S_STATES_MAX + 1) 2984 return; 2985 2986 /* Request that the system prepare to enter the given suspend state. */ 2987 ret = acpi_ReqSleepState((struct acpi_softc *)arg, state); 2988 if (ret != 0) 2989 device_printf(sc->acpi_dev, 2990 "request to enter state S%d failed (err %d)\n", state, ret); 2991 2992 return_VOID; 2993 } 2994 2995 static void 2996 acpi_system_eventhandler_wakeup(void *arg, int state) 2997 { 2998 2999 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); 3000 3001 /* Currently, nothing to do for wakeup. */ 3002 3003 return_VOID; 3004 } 3005 3006 /* 3007 * ACPICA Event Handlers (FixedEvent, also called from button notify handler) 3008 */ 3009 UINT32 3010 acpi_event_power_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_power_button_sx); 3017 3018 return_VALUE (ACPI_INTERRUPT_HANDLED); 3019 } 3020 3021 UINT32 3022 acpi_event_power_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_power_button_sx); 3029 3030 return_VALUE (ACPI_INTERRUPT_HANDLED); 3031 } 3032 3033 UINT32 3034 acpi_event_sleep_button_sleep(void *context) 3035 { 3036 struct acpi_softc *sc = (struct acpi_softc *)context; 3037 3038 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3039 3040 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx); 3041 3042 return_VALUE (ACPI_INTERRUPT_HANDLED); 3043 } 3044 3045 UINT32 3046 acpi_event_sleep_button_wake(void *context) 3047 { 3048 struct acpi_softc *sc = (struct acpi_softc *)context; 3049 3050 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 3051 3052 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx); 3053 3054 return_VALUE (ACPI_INTERRUPT_HANDLED); 3055 } 3056 3057 /* 3058 * XXX This static buffer is suboptimal. There is no locking so only 3059 * use this for single-threaded callers. 3060 */ 3061 char * 3062 acpi_name(ACPI_HANDLE handle) 3063 { 3064 ACPI_BUFFER buf; 3065 static char data[256]; 3066 3067 buf.Length = sizeof(data); 3068 buf.Pointer = data; 3069 3070 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf))) 3071 return (data); 3072 return ("(unknown)"); 3073 } 3074 3075 /* 3076 * Debugging/bug-avoidance. Avoid trying to fetch info on various 3077 * parts of the namespace. 3078 */ 3079 int 3080 acpi_avoid(ACPI_HANDLE handle) 3081 { 3082 char *cp, *env, *np; 3083 int len; 3084 3085 np = acpi_name(handle); 3086 if (*np == '\\') 3087 np++; 3088 if ((env = kgetenv("debug.acpi.avoid")) == NULL) 3089 return (0); 3090 3091 /* Scan the avoid list checking for a match */ 3092 cp = env; 3093 for (;;) { 3094 while (*cp != 0 && isspace(*cp)) 3095 cp++; 3096 if (*cp == 0) 3097 break; 3098 len = 0; 3099 while (cp[len] != 0 && !isspace(cp[len])) 3100 len++; 3101 if (!strncmp(cp, np, len)) { 3102 kfreeenv(env); 3103 return(1); 3104 } 3105 cp += len; 3106 } 3107 kfreeenv(env); 3108 3109 return (0); 3110 } 3111 3112 /* 3113 * Debugging/bug-avoidance. Disable ACPI subsystem components. 3114 */ 3115 int 3116 acpi_disabled(char *subsys) 3117 { 3118 char *cp, *env; 3119 int len; 3120 3121 if ((env = kgetenv("debug.acpi.disabled")) == NULL) 3122 return (0); 3123 if (strcmp(env, "all") == 0) { 3124 kfreeenv(env); 3125 return (1); 3126 } 3127 3128 /* Scan the disable list, checking for a match. */ 3129 cp = env; 3130 for (;;) { 3131 while (*cp != '\0' && isspace(*cp)) 3132 cp++; 3133 if (*cp == '\0') 3134 break; 3135 len = 0; 3136 while (cp[len] != '\0' && !isspace(cp[len])) 3137 len++; 3138 if (strncmp(cp, subsys, len) == 0) { 3139 kfreeenv(env); 3140 return (1); 3141 } 3142 cp += len; 3143 } 3144 kfreeenv(env); 3145 3146 return (0); 3147 } 3148 3149 /* 3150 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most 3151 * components are enabled by default. The ones that are not have to be 3152 * enabled via debug.acpi.enabled. 3153 */ 3154 int 3155 acpi_enabled(char *subsys) 3156 { 3157 char *cp, *env; 3158 int len; 3159 3160 if ((env = kgetenv("debug.acpi.enabled")) == NULL) 3161 return (0); 3162 if (strcmp(env, "all") == 0) { 3163 kfreeenv(env); 3164 return (1); 3165 } 3166 3167 /* Scan the enable list, checking for a match. */ 3168 cp = env; 3169 for (;;) { 3170 while (*cp != '\0' && isspace(*cp)) 3171 cp++; 3172 if (*cp == '\0') 3173 break; 3174 len = 0; 3175 while (cp[len] != '\0' && !isspace(cp[len])) 3176 len++; 3177 if (strncmp(cp, subsys, len) == 0) { 3178 kfreeenv(env); 3179 return (1); 3180 } 3181 cp += len; 3182 } 3183 kfreeenv(env); 3184 3185 return (0); 3186 } 3187 3188 /* 3189 * Control interface. 3190 * 3191 * We multiplex ioctls for all participating ACPI devices here. Individual 3192 * drivers wanting to be accessible via /dev/acpi should use the 3193 * register/deregister interface to make their handlers visible. 3194 */ 3195 struct acpi_ioctl_hook 3196 { 3197 TAILQ_ENTRY(acpi_ioctl_hook) link; 3198 u_long cmd; 3199 acpi_ioctl_fn fn; 3200 void *arg; 3201 }; 3202 3203 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks; 3204 static int acpi_ioctl_hooks_initted; 3205 3206 int 3207 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg) 3208 { 3209 struct acpi_ioctl_hook *hp; 3210 3211 if ((hp = kmalloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL) 3212 return (ENOMEM); 3213 hp->cmd = cmd; 3214 hp->fn = fn; 3215 hp->arg = arg; 3216 3217 ACPI_LOCK(acpi); 3218 if (acpi_ioctl_hooks_initted == 0) { 3219 TAILQ_INIT(&acpi_ioctl_hooks); 3220 acpi_ioctl_hooks_initted = 1; 3221 } 3222 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link); 3223 ACPI_UNLOCK(acpi); 3224 3225 return (0); 3226 } 3227 3228 void 3229 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn) 3230 { 3231 struct acpi_ioctl_hook *hp; 3232 3233 ACPI_LOCK(acpi); 3234 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) 3235 if (hp->cmd == cmd && hp->fn == fn) 3236 break; 3237 3238 if (hp != NULL) { 3239 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link); 3240 kfree(hp, M_ACPIDEV); 3241 } 3242 ACPI_UNLOCK(acpi); 3243 } 3244 3245 static int 3246 acpiopen(struct dev_open_args *ap) 3247 { 3248 return (0); 3249 } 3250 3251 static int 3252 acpiclose(struct dev_close_args *ap) 3253 { 3254 return (0); 3255 } 3256 3257 static void 3258 acpi_free_object_list(ACPI_OBJECT_LIST *list) 3259 { 3260 for (int i = 0; i < list->Count; i++) { 3261 switch (list->Pointer[i].Type) { 3262 case ACPI_TYPE_STRING: 3263 AcpiOsFree(list->Pointer[i].String.Pointer); 3264 break; 3265 case ACPI_TYPE_BUFFER: 3266 AcpiOsFree(list->Pointer[i].Buffer.Pointer); 3267 break; 3268 default: 3269 break; 3270 } 3271 } 3272 AcpiOsFree(list); 3273 } 3274 3275 static ACPI_OBJECT_LIST * 3276 acpi_copyin_object_list(ACPI_OBJECT_LIST *src) 3277 { 3278 ACPI_OBJECT_LIST *dest; 3279 BOOLEAN failed; 3280 3281 if (src->Count > 7) 3282 return NULL; 3283 3284 dest = AcpiOsAllocate(sizeof(ACPI_OBJECT_LIST) + sizeof(ACPI_OBJECT) * src->Count); 3285 if (!dest) 3286 return NULL; 3287 3288 dest->Count = src->Count; 3289 dest->Pointer = (ACPI_OBJECT *)(dest + 1); 3290 if (copyin(src->Pointer, dest->Pointer, sizeof(ACPI_OBJECT) * dest->Count)) { 3291 AcpiOsFree(dest); 3292 return NULL; 3293 } 3294 3295 failed = FALSE; 3296 3297 for (int i = 0; i < dest->Count; i++) { 3298 switch (dest->Pointer[i].Type) { 3299 case ACPI_TYPE_INTEGER: 3300 break; 3301 case ACPI_TYPE_STRING: { 3302 void *v = AcpiOsAllocate(dest->Pointer[i].String.Length); 3303 if (!v || copyin(dest->Pointer[i].String.Pointer, v, dest->Pointer[i].String.Length)) 3304 failed = TRUE; 3305 dest->Pointer[i].String.Pointer = v; 3306 break; 3307 } 3308 case ACPI_TYPE_BUFFER: { 3309 void *v = AcpiOsAllocate(dest->Pointer[i].Buffer.Length); 3310 if (!v || copyin(dest->Pointer[i].Buffer.Pointer, v, dest->Pointer[i].Buffer.Length)) 3311 failed = TRUE; 3312 dest->Pointer[i].String.Pointer = v; 3313 break; 3314 } 3315 default: 3316 failed = TRUE; 3317 break; 3318 } 3319 } 3320 3321 if (failed) { 3322 acpi_free_object_list(dest); 3323 dest = NULL; 3324 } 3325 3326 return dest; 3327 } 3328 3329 static int 3330 acpi_call_ioctl(caddr_t addr) 3331 { 3332 struct acpi_mcall_ioctl_arg *params; 3333 ACPI_OBJECT_LIST *args; 3334 ACPI_BUFFER result; 3335 char path[256]; 3336 3337 result.Length = ACPI_ALLOCATE_BUFFER; 3338 result.Pointer = NULL; 3339 3340 params = (struct acpi_mcall_ioctl_arg *)addr; 3341 args = acpi_copyin_object_list(¶ms->args); 3342 if (!args) 3343 return EINVAL; 3344 if (copyinstr(params->path, path, sizeof(path), NULL)) 3345 return EINVAL; 3346 params->retval = AcpiEvaluateObject(NULL, path, args, &result); 3347 if (ACPI_SUCCESS(params->retval)) { 3348 if (result.Pointer != NULL) { 3349 if (params->result.Pointer != NULL) { 3350 params->result.Length = min(params->result.Length, 3351 result.Length); 3352 if (result.Length >= sizeof(ACPI_OBJECT)) { 3353 acpi_call_fixup_pointers((ACPI_OBJECT *)result.Pointer, 3354 params->result.Pointer); 3355 } 3356 copyout(result.Pointer, params->result.Pointer, 3357 params->result.Length); 3358 params->reslen = result.Length; 3359 } 3360 AcpiOsFree(result.Pointer); 3361 } 3362 } 3363 acpi_free_object_list(args); 3364 3365 return (0); 3366 } 3367 3368 void 3369 acpi_call_fixup_pointers(ACPI_OBJECT *p, UINT8 *dest) 3370 { 3371 switch (p->Type) { 3372 case ACPI_TYPE_STRING: 3373 p->String.Pointer += dest - (UINT8 *)p; 3374 break; 3375 case ACPI_TYPE_BUFFER: 3376 p->Buffer.Pointer += dest - (UINT8 *)p; 3377 break; 3378 } 3379 } 3380 3381 static int 3382 acpiioctl(struct dev_ioctl_args *ap) 3383 { 3384 struct acpi_softc *sc; 3385 struct acpi_ioctl_hook *hp; 3386 int error, state; 3387 3388 error = 0; 3389 hp = NULL; 3390 sc = ap->a_head.a_dev->si_drv1; 3391 3392 /* 3393 * Scan the list of registered ioctls, looking for handlers. 3394 */ 3395 lwkt_gettoken(&acpi_token); 3396 ACPI_LOCK(acpi); 3397 if (acpi_ioctl_hooks_initted) { 3398 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) { 3399 if (hp->cmd == ap->a_cmd) 3400 break; 3401 } 3402 } 3403 ACPI_UNLOCK(acpi); 3404 if (hp) { 3405 error = hp->fn(ap->a_cmd, ap->a_data, hp->arg); 3406 lwkt_reltoken(&acpi_token); 3407 return error; 3408 } 3409 3410 /* 3411 * Core ioctls are not permitted for non-writable user. 3412 * Currently, other ioctls just fetch information. 3413 * Not changing system behavior. 3414 */ 3415 if ((ap->a_fflag & FWRITE) == 0) { 3416 lwkt_reltoken(&acpi_token); 3417 return (EPERM); 3418 } 3419 3420 /* Core system ioctls. */ 3421 switch (ap->a_cmd) { 3422 case ACPIIO_REQSLPSTATE: 3423 state = *(int *)ap->a_data; 3424 if (state != ACPI_STATE_S5) 3425 error = acpi_ReqSleepState(sc, state); 3426 else { 3427 device_printf(sc->acpi_dev, 3428 "power off via acpi ioctl not supported\n"); 3429 error = ENXIO; 3430 } 3431 break; 3432 case ACPIIO_ACKSLPSTATE: 3433 error = EOPNOTSUPP; 3434 #if 0 /* notyet */ 3435 error = *(int *)ap->a_data; 3436 error = acpi_AckSleepState(sc->acpi_clone, error); 3437 #endif 3438 break; 3439 case ACPIIO_SETSLPSTATE: /* DEPRECATED */ 3440 error = EINVAL; 3441 state = *(int *)ap->a_data; 3442 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) 3443 if (ACPI_SUCCESS(acpi_SetSleepState(sc, state))) 3444 error = 0; 3445 break; 3446 case ACPIIO_DO_MCALL: 3447 if (acpi_allow_mcall == 1) { 3448 error = acpi_call_ioctl(ap->a_data); 3449 } else { 3450 device_printf(sc->acpi_dev, 3451 "debug.acpi.allow_method_calls tunable must be set\n"); 3452 error = ENXIO; 3453 } 3454 break; 3455 default: 3456 error = ENXIO; 3457 break; 3458 } 3459 lwkt_reltoken(&acpi_token); 3460 3461 return (error); 3462 } 3463 3464 static int 3465 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 3466 { 3467 int error; 3468 struct sbuf sb; 3469 UINT8 state, TypeA, TypeB; 3470 3471 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND); 3472 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++) 3473 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) 3474 sbuf_printf(&sb, "S%d ", state); 3475 sbuf_trim(&sb); 3476 sbuf_finish(&sb); 3477 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req); 3478 sbuf_delete(&sb); 3479 return (error); 3480 } 3481 3482 static int 3483 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) 3484 { 3485 char sleep_state[10]; 3486 int error; 3487 u_int new_state, old_state; 3488 3489 old_state = *(u_int *)oidp->oid_arg1; 3490 if (old_state > ACPI_S_STATES_MAX + 1) 3491 strlcpy(sleep_state, "unknown", sizeof(sleep_state)); 3492 else 3493 strlcpy(sleep_state, sleep_state_names[old_state], sizeof(sleep_state)); 3494 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req); 3495 if (error == 0 && req->newptr != NULL) { 3496 new_state = ACPI_STATE_S0; 3497 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++) 3498 if (strcmp(sleep_state, sleep_state_names[new_state]) == 0) 3499 break; 3500 if (new_state <= ACPI_S_STATES_MAX + 1) { 3501 if (new_state != old_state) 3502 *(u_int *)oidp->oid_arg1 = new_state; 3503 } else 3504 error = EINVAL; 3505 } 3506 3507 return (error); 3508 } 3509 3510 /* Inform devctl(4) when we receive a Notify. */ 3511 void 3512 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify) 3513 { 3514 char notify_buf[16]; 3515 ACPI_BUFFER handle_buf; 3516 ACPI_STATUS status; 3517 3518 if (subsystem == NULL) 3519 return; 3520 3521 handle_buf.Pointer = NULL; 3522 handle_buf.Length = ACPI_ALLOCATE_BUFFER; 3523 status = AcpiNsHandleToPathname(h, &handle_buf, FALSE); 3524 if (ACPI_FAILURE(status)) 3525 return; 3526 ksnprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify); 3527 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf); 3528 AcpiOsFree(handle_buf.Pointer); 3529 } 3530 3531 #ifdef ACPI_DEBUG 3532 /* 3533 * Support for parsing debug options from the kernel environment. 3534 * 3535 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers 3536 * by specifying the names of the bits in the debug.acpi.layer and 3537 * debug.acpi.level environment variables. Bits may be unset by 3538 * prefixing the bit name with !. 3539 */ 3540 struct debugtag 3541 { 3542 char *name; 3543 UINT32 value; 3544 }; 3545 3546 static struct debugtag dbg_layer[] = { 3547 {"ACPI_UTILITIES", ACPI_UTILITIES}, 3548 {"ACPI_HARDWARE", ACPI_HARDWARE}, 3549 {"ACPI_EVENTS", ACPI_EVENTS}, 3550 {"ACPI_TABLES", ACPI_TABLES}, 3551 {"ACPI_NAMESPACE", ACPI_NAMESPACE}, 3552 {"ACPI_PARSER", ACPI_PARSER}, 3553 {"ACPI_DISPATCHER", ACPI_DISPATCHER}, 3554 {"ACPI_EXECUTER", ACPI_EXECUTER}, 3555 {"ACPI_RESOURCES", ACPI_RESOURCES}, 3556 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER}, 3557 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES}, 3558 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER}, 3559 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS}, 3560 3561 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER}, 3562 {"ACPI_BATTERY", ACPI_BATTERY}, 3563 {"ACPI_BUS", ACPI_BUS}, 3564 {"ACPI_BUTTON", ACPI_BUTTON}, 3565 {"ACPI_EC", ACPI_EC}, 3566 {"ACPI_FAN", ACPI_FAN}, 3567 {"ACPI_POWERRES", ACPI_POWERRES}, 3568 {"ACPI_PROCESSOR", ACPI_PROCESSOR}, 3569 {"ACPI_THERMAL", ACPI_THERMAL}, 3570 {"ACPI_TIMER", ACPI_TIMER}, 3571 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS}, 3572 {NULL, 0} 3573 }; 3574 3575 static struct debugtag dbg_level[] = { 3576 {"ACPI_LV_INIT", ACPI_LV_INIT}, 3577 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT}, 3578 {"ACPI_LV_INFO", ACPI_LV_INFO}, 3579 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR}, 3580 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS}, 3581 3582 /* Trace verbosity level 1 [Standard Trace Level] */ 3583 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES}, 3584 {"ACPI_LV_PARSE", ACPI_LV_PARSE}, 3585 {"ACPI_LV_LOAD", ACPI_LV_LOAD}, 3586 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH}, 3587 {"ACPI_LV_EXEC", ACPI_LV_EXEC}, 3588 {"ACPI_LV_NAMES", ACPI_LV_NAMES}, 3589 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION}, 3590 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD}, 3591 {"ACPI_LV_TABLES", ACPI_LV_TABLES}, 3592 {"ACPI_LV_VALUES", ACPI_LV_VALUES}, 3593 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS}, 3594 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES}, 3595 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS}, 3596 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE}, 3597 {"ACPI_LV_EVALUATION", ACPI_LV_EVALUATION}, 3598 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1}, 3599 3600 /* Trace verbosity level 2 [Function tracing and memory allocation] */ 3601 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS}, 3602 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS}, 3603 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS}, 3604 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2}, 3605 {"ACPI_LV_ALL", ACPI_LV_ALL}, 3606 3607 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */ 3608 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX}, 3609 {"ACPI_LV_THREADS", ACPI_LV_THREADS}, 3610 {"ACPI_LV_IO", ACPI_LV_IO}, 3611 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS}, 3612 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3}, 3613 3614 /* Exceptionally verbose output -- also used in the global "DebugLevel" */ 3615 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE}, 3616 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO}, 3617 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES}, 3618 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS}, 3619 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE}, 3620 {NULL, 0} 3621 }; 3622 3623 static void 3624 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag) 3625 { 3626 char *ep; 3627 int i, l; 3628 int set; 3629 3630 while (*cp) { 3631 if (isspace(*cp)) { 3632 cp++; 3633 continue; 3634 } 3635 ep = cp; 3636 while (*ep && !isspace(*ep)) 3637 ep++; 3638 if (*cp == '!') { 3639 set = 0; 3640 cp++; 3641 if (cp == ep) 3642 continue; 3643 } else { 3644 set = 1; 3645 } 3646 l = ep - cp; 3647 for (i = 0; tag[i].name != NULL; i++) { 3648 if (!strncmp(cp, tag[i].name, l)) { 3649 if (set) 3650 *flag |= tag[i].value; 3651 else 3652 *flag &= ~tag[i].value; 3653 } 3654 } 3655 cp = ep; 3656 } 3657 } 3658 3659 static void 3660 acpi_set_debugging(void *junk) 3661 { 3662 char *layer, *level; 3663 3664 if (cold) { 3665 AcpiDbgLayer = 0; 3666 AcpiDbgLevel = 0; 3667 } 3668 3669 layer = kgetenv("debug.acpi.layer"); 3670 level = kgetenv("debug.acpi.level"); 3671 if (layer == NULL && level == NULL) 3672 return; 3673 3674 kprintf("ACPI set debug"); 3675 if (layer != NULL) { 3676 if (strcmp("NONE", layer) != 0) 3677 kprintf(" layer '%s'", layer); 3678 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer); 3679 kfreeenv(layer); 3680 } 3681 if (level != NULL) { 3682 if (strcmp("NONE", level) != 0) 3683 kprintf(" level '%s'", level); 3684 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel); 3685 kfreeenv(level); 3686 } 3687 kprintf("\n"); 3688 } 3689 3690 SYSINIT(acpi_debugging, SI_BOOT1_TUNABLES, SI_ORDER_ANY, acpi_set_debugging, 3691 NULL); 3692 3693 static int 3694 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS) 3695 { 3696 int error, *dbg; 3697 struct debugtag *tag; 3698 struct sbuf sb; 3699 3700 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL) 3701 return (ENOMEM); 3702 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) { 3703 tag = &dbg_layer[0]; 3704 dbg = &AcpiDbgLayer; 3705 } else { 3706 tag = &dbg_level[0]; 3707 dbg = &AcpiDbgLevel; 3708 } 3709 3710 /* Get old values if this is a get request. */ 3711 ACPI_SERIAL_BEGIN(acpi); 3712 if (*dbg == 0) { 3713 sbuf_cpy(&sb, "NONE"); 3714 } else if (req->newptr == NULL) { 3715 for (; tag->name != NULL; tag++) { 3716 if ((*dbg & tag->value) == tag->value) 3717 sbuf_printf(&sb, "%s ", tag->name); 3718 } 3719 } 3720 sbuf_trim(&sb); 3721 sbuf_finish(&sb); 3722 3723 /* Copy out the old values to the user. */ 3724 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb)); 3725 sbuf_delete(&sb); 3726 3727 /* If the user is setting a string, parse it. */ 3728 if (error == 0 && req->newptr != NULL) { 3729 *dbg = 0; 3730 ksetenv((char *)oidp->oid_arg1, (char *)req->newptr); 3731 acpi_set_debugging(NULL); 3732 } 3733 ACPI_SERIAL_END(acpi); 3734 3735 return (error); 3736 } 3737 3738 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING, 3739 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", ""); 3740 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING, 3741 "debug.acpi.level", 0, acpi_debug_sysctl, "A", ""); 3742 #endif /* ACPI_DEBUG */ 3743 3744 static int 3745 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS) 3746 { 3747 int error; 3748 int old; 3749 3750 old = acpi_debug_objects; 3751 error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req); 3752 if (error != 0 || req->newptr == NULL) 3753 return (error); 3754 if (old == acpi_debug_objects || (old && acpi_debug_objects)) 3755 return (0); 3756 3757 ACPI_SERIAL_BEGIN(acpi); 3758 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE; 3759 ACPI_SERIAL_END(acpi); 3760 3761 return (0); 3762 } 3763 3764 3765 static int 3766 acpi_parse_interfaces(char *str, struct acpi_interface *iface) 3767 { 3768 char *p; 3769 size_t len; 3770 int i, j; 3771 3772 p = str; 3773 while (isspace(*p) || *p == ',') 3774 p++; 3775 len = strlen(p); 3776 if (len == 0) 3777 return (0); 3778 p = kstrdup(p, M_TEMP); 3779 for (i = 0; i < len; i++) 3780 if (p[i] == ',') 3781 p[i] = '\0'; 3782 i = j = 0; 3783 while (i < len) 3784 if (isspace(p[i]) || p[i] == '\0') 3785 i++; 3786 else { 3787 i += strlen(p + i) + 1; 3788 j++; 3789 } 3790 if (j == 0) { 3791 kfree(p, M_TEMP); 3792 return (0); 3793 } 3794 iface->data = kmalloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK); 3795 iface->num = j; 3796 i = j = 0; 3797 while (i < len) 3798 if (isspace(p[i]) || p[i] == '\0') 3799 i++; 3800 else { 3801 iface->data[j] = p + i; 3802 i += strlen(p + i) + 1; 3803 j++; 3804 } 3805 3806 return (j); 3807 } 3808 3809 static void 3810 acpi_free_interfaces(struct acpi_interface *iface) 3811 { 3812 kfree(iface->data[0], M_TEMP); 3813 kfree(iface->data, M_TEMP); 3814 } 3815 3816 static void 3817 acpi_reset_interfaces(device_t dev) 3818 { 3819 struct acpi_interface list; 3820 ACPI_STATUS status; 3821 int i; 3822 3823 if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) { 3824 for (i = 0; i < list.num; i++) { 3825 status = AcpiInstallInterface(list.data[i]); 3826 if (ACPI_FAILURE(status)) 3827 device_printf(dev, 3828 "failed to install _OSI(\"%s\"): %s\n", 3829 list.data[i], AcpiFormatException(status)); 3830 else if (bootverbose) 3831 device_printf(dev, "installed _OSI(\"%s\")\n", 3832 list.data[i]); 3833 } 3834 acpi_free_interfaces(&list); 3835 } 3836 if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) { 3837 for (i = 0; i < list.num; i++) { 3838 status = AcpiRemoveInterface(list.data[i]); 3839 if (ACPI_FAILURE(status)) 3840 device_printf(dev, 3841 "failed to remove _OSI(\"%s\"): %s\n", 3842 list.data[i], AcpiFormatException(status)); 3843 else if (bootverbose) 3844 device_printf(dev, "removed _OSI(\"%s\")\n", 3845 list.data[i]); 3846 } 3847 acpi_free_interfaces(&list); 3848 } 3849 } 3850 3851 static int 3852 acpi_pm_func(u_long cmd, void *arg, ...) 3853 { 3854 int state, acpi_state; 3855 int error; 3856 struct acpi_softc *sc; 3857 __va_list ap; 3858 3859 error = 0; 3860 switch (cmd) { 3861 case POWER_CMD_SUSPEND: 3862 sc = (struct acpi_softc *)arg; 3863 if (sc == NULL) { 3864 error = EINVAL; 3865 goto out; 3866 } 3867 3868 __va_start(ap, arg); 3869 state = __va_arg(ap, int); 3870 __va_end(ap); 3871 3872 switch (state) { 3873 case POWER_SLEEP_STATE_STANDBY: 3874 acpi_state = sc->acpi_standby_sx; 3875 break; 3876 case POWER_SLEEP_STATE_SUSPEND: 3877 acpi_state = sc->acpi_suspend_sx; 3878 break; 3879 case POWER_SLEEP_STATE_HIBERNATE: 3880 acpi_state = ACPI_STATE_S4; 3881 break; 3882 default: 3883 error = EINVAL; 3884 goto out; 3885 } 3886 3887 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state))) 3888 error = ENXIO; 3889 break; 3890 default: 3891 error = EINVAL; 3892 goto out; 3893 } 3894 3895 out: 3896 return (error); 3897 } 3898 3899 static void 3900 acpi_pm_register(void *arg) 3901 { 3902 if (!cold || resource_disabled("acpi", 0)) 3903 return; 3904 3905 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL); 3906 } 3907 3908 SYSINIT(power, SI_BOOT2_KLD, SI_ORDER_ANY, acpi_pm_register, 0); 3909