2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
4 * Copyright (c) 2000, 2001 Michael Smith
5 * Copyright (c) 2000 BSDi
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
34 #include <sys/param.h>
35 #include <sys/kernel.h>
37 #include <sys/fcntl.h>
38 #include <sys/malloc.h>
39 #include <sys/module.h>
42 #include <sys/ioccom.h>
43 #include <sys/reboot.h>
44 #include <sys/sysctl.h>
45 #include <sys/ctype.h>
46 #include <sys/linker.h>
47 #include <sys/power.h>
51 #include <machine/resource.h>
52 #include <machine/bus.h>
54 #include <isa/isavar.h>
55 #include <isa/pnpvar.h>
57 #include <contrib/dev/acpica/acpi.h>
58 #include <dev/acpica/acpivar.h>
59 #include <dev/acpica/acpiio.h>
60 #include <contrib/dev/acpica/achware.h>
61 #include <contrib/dev/acpica/acnamesp.h>
64 #include <dev/pci/pcivar.h>
65 #include <dev/pci/pci_private.h>
67 #include <vm/vm_param.h>
69 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
71 /* Hooks for the ACPI CA debugging infrastructure */
72 #define _COMPONENT ACPI_BUS
73 ACPI_MODULE_NAME("ACPI")
75 static d_open_t acpiopen;
76 static d_close_t acpiclose;
77 static d_ioctl_t acpiioctl;
79 static struct cdevsw acpi_cdevsw = {
80 .d_version = D_VERSION,
87 /* Global mutex for locking access to the ACPI subsystem. */
88 struct mtx acpi_mutex;
90 /* Bitmap of device quirks. */
93 static int acpi_modevent(struct module *mod, int event, void *junk);
94 static void acpi_identify(driver_t *driver, device_t parent);
95 static int acpi_probe(device_t dev);
96 static int acpi_attach(device_t dev);
97 static int acpi_suspend(device_t dev);
98 static int acpi_resume(device_t dev);
99 static int acpi_shutdown(device_t dev);
100 static device_t acpi_add_child(device_t bus, int order, const char *name,
102 static int acpi_print_child(device_t bus, device_t child);
103 static void acpi_probe_nomatch(device_t bus, device_t child);
104 static void acpi_driver_added(device_t dev, driver_t *driver);
105 static int acpi_read_ivar(device_t dev, device_t child, int index,
107 static int acpi_write_ivar(device_t dev, device_t child, int index,
109 static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
110 static int acpi_sysres_alloc(device_t dev);
111 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
112 int type, int *rid, u_long start, u_long end,
113 u_long count, u_int flags);
114 static int acpi_release_resource(device_t bus, device_t child, int type,
115 int rid, struct resource *r);
116 static void acpi_delete_resource(device_t bus, device_t child, int type,
118 static uint32_t acpi_isa_get_logicalid(device_t dev);
119 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
120 static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
121 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
122 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
124 static int acpi_device_pwr_for_sleep(device_t bus, device_t dev,
126 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
127 void *context, void **retval);
128 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
129 int max_depth, acpi_scan_cb_t user_fn, void *arg);
130 static int acpi_set_powerstate_method(device_t bus, device_t child,
132 static int acpi_isa_pnp_probe(device_t bus, device_t child,
133 struct isa_pnp_id *ids);
134 static void acpi_probe_children(device_t bus);
135 static int acpi_probe_order(ACPI_HANDLE handle, int *order);
136 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
137 void *context, void **status);
138 static BOOLEAN acpi_MatchHid(ACPI_HANDLE h, const char *hid);
139 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
140 static void acpi_shutdown_final(void *arg, int howto);
141 static void acpi_enable_fixed_events(struct acpi_softc *sc);
142 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
143 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
144 static int acpi_wake_prep_walk(int sstate);
145 static int acpi_wake_sysctl_walk(device_t dev);
146 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
147 static void acpi_system_eventhandler_sleep(void *arg, int state);
148 static void acpi_system_eventhandler_wakeup(void *arg, int state);
149 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
150 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
151 static int acpi_pm_func(u_long cmd, void *arg, ...);
152 static int acpi_child_location_str_method(device_t acdev, device_t child,
153 char *buf, size_t buflen);
154 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
155 char *buf, size_t buflen);
157 static device_method_t acpi_methods[] = {
158 /* Device interface */
159 DEVMETHOD(device_identify, acpi_identify),
160 DEVMETHOD(device_probe, acpi_probe),
161 DEVMETHOD(device_attach, acpi_attach),
162 DEVMETHOD(device_shutdown, acpi_shutdown),
163 DEVMETHOD(device_detach, bus_generic_detach),
164 DEVMETHOD(device_suspend, acpi_suspend),
165 DEVMETHOD(device_resume, acpi_resume),
168 DEVMETHOD(bus_add_child, acpi_add_child),
169 DEVMETHOD(bus_print_child, acpi_print_child),
170 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
171 DEVMETHOD(bus_driver_added, acpi_driver_added),
172 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
173 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
174 DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
175 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
176 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
177 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
178 DEVMETHOD(bus_release_resource, acpi_release_resource),
179 DEVMETHOD(bus_delete_resource, acpi_delete_resource),
180 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
181 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
182 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
183 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
184 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
185 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
188 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
189 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
190 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
191 DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
194 DEVMETHOD(pci_set_powerstate, acpi_set_powerstate_method),
197 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
202 static driver_t acpi_driver = {
205 sizeof(struct acpi_softc),
208 static devclass_t acpi_devclass;
209 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
210 MODULE_VERSION(acpi, 1);
212 ACPI_SERIAL_DECL(acpi, "ACPI root bus");
214 /* Local pools for managing system resources for ACPI child devices. */
215 static struct rman acpi_rman_io, acpi_rman_mem;
217 #define ACPI_MINIMUM_AWAKETIME 5
219 static const char* sleep_state_names[] = {
220 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
222 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
223 static char acpi_ca_version[12];
224 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
225 acpi_ca_version, 0, "Version of Intel ACPI-CA");
228 * Allow override of whether methods execute in parallel or not.
229 * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
230 * errors for AML that really can't handle parallel method execution.
231 * It is off by default since this breaks recursive methods and
232 * some IBMs use such code.
234 static int acpi_serialize_methods;
235 TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
237 /* Power devices off and on in suspend and resume. XXX Remove once tested. */
238 static int acpi_do_powerstate = 1;
239 TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate);
240 SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW,
241 &acpi_do_powerstate, 1, "Turn off devices when suspending.");
243 /* Allow users to override quirks. */
244 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
246 static int acpi_susp_bounce;
247 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
248 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
251 * ACPI can only be loaded as a module by the loader; activating it after
252 * system bootstrap time is not useful, and can be fatal to the system.
253 * It also cannot be unloaded, since the entire system bus heirarchy hangs
257 acpi_modevent(struct module *mod, int event, void *junk)
262 printf("The ACPI driver cannot be loaded after boot.\n");
267 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
277 * Perform early initialization.
282 static int started = 0;
286 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
288 /* Only run the startup code once. The MADT driver also calls this. */
290 return_VALUE (AE_OK);
294 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
295 * if more tables exist.
297 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
298 printf("ACPI: Table initialisation failed: %s\n",
299 AcpiFormatException(status));
300 return_VALUE (status);
303 /* Set up any quirks we have for this system. */
304 if (acpi_quirks == ACPI_Q_OK)
305 acpi_table_quirks(&acpi_quirks);
307 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
308 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
309 acpi_quirks &= ~ACPI_Q_BROKEN;
310 if (acpi_quirks & ACPI_Q_BROKEN) {
311 printf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
315 return_VALUE (status);
319 * Detect ACPI, perform early initialisation
322 acpi_identify(driver_t *driver, device_t parent)
326 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
331 /* Check that we haven't been disabled with a hint. */
332 if (resource_disabled("acpi", 0))
335 /* Make sure we're not being doubly invoked. */
336 if (device_find_child(parent, "acpi", 0) != NULL)
339 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
341 /* Initialize root tables. */
342 if (ACPI_FAILURE(acpi_Startup())) {
343 printf("ACPI: Try disabling either ACPI or apic support.\n");
347 /* Attach the actual ACPI device. */
348 if ((child = BUS_ADD_CHILD(parent, 10, "acpi", 0)) == NULL) {
349 device_printf(parent, "device_identify failed\n");
355 * Fetch some descriptive data from ACPI to put in our attach message.
358 acpi_probe(device_t dev)
360 ACPI_TABLE_RSDP *rsdp;
361 ACPI_TABLE_HEADER *rsdt;
362 ACPI_PHYSICAL_ADDRESS paddr;
363 char buf[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
366 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
368 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
369 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
370 device_printf(dev, "probe failed, other PM system enabled.\n");
371 return_VALUE (ENXIO);
374 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
375 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
376 return_VALUE (ENXIO);
377 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
378 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
380 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
381 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
383 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
384 return_VALUE (ENXIO);
385 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
386 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
389 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
392 device_set_desc_copy(dev, sbuf_data(&sb));
394 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
400 acpi_attach(device_t dev)
402 struct acpi_softc *sc;
403 ACPI_TABLE_FACS *facs;
410 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
412 sc = device_get_softc(dev);
414 callout_init(&sc->susp_force_to, TRUE);
418 /* Initialize resource manager. */
419 acpi_rman_io.rm_type = RMAN_ARRAY;
420 acpi_rman_io.rm_start = 0;
421 acpi_rman_io.rm_end = 0xffff;
422 acpi_rman_io.rm_descr = "ACPI I/O ports";
423 if (rman_init(&acpi_rman_io) != 0)
424 panic("acpi rman_init IO ports failed");
425 acpi_rman_mem.rm_type = RMAN_ARRAY;
426 acpi_rman_mem.rm_start = 0;
427 acpi_rman_mem.rm_end = ~0ul;
428 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
429 if (rman_init(&acpi_rman_mem) != 0)
430 panic("acpi rman_init memory failed");
432 /* Initialise the ACPI mutex */
433 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
436 * Set the globals from our tunables. This is needed because ACPI-CA
437 * uses UINT8 for some values and we have no tunable_byte.
439 AcpiGbl_AllMethodsSerialized = acpi_serialize_methods;
440 AcpiGbl_EnableInterpreterSlack = TRUE;
442 /* Start up the ACPI CA subsystem. */
443 status = AcpiInitializeSubsystem();
444 if (ACPI_FAILURE(status)) {
445 device_printf(dev, "Could not initialize Subsystem: %s\n",
446 AcpiFormatException(status));
450 /* Load ACPI name space. */
451 status = AcpiLoadTables();
452 if (ACPI_FAILURE(status)) {
453 device_printf(dev, "Could not load Namespace: %s\n",
454 AcpiFormatException(status));
458 /* Install the default address space handlers. */
459 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
460 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
461 if (ACPI_FAILURE(status)) {
462 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
463 AcpiFormatException(status));
466 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
467 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
468 if (ACPI_FAILURE(status)) {
469 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
470 AcpiFormatException(status));
473 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
474 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
475 if (ACPI_FAILURE(status)) {
476 device_printf(dev, "could not initialise PciConfig handler: %s\n",
477 AcpiFormatException(status));
482 * Note that some systems (specifically, those with namespace evaluation
483 * issues that require the avoidance of parts of the namespace) must
484 * avoid running _INI and _STA on everything, as well as dodging the final
487 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
489 * XXX We should arrange for the object init pass after we have attached
490 * all our child devices, but on many systems it works here.
493 if (testenv("debug.acpi.avoid"))
494 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
496 /* Bring the hardware and basic handlers online. */
497 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
498 device_printf(dev, "Could not enable ACPI: %s\n",
499 AcpiFormatException(status));
504 * Call the ECDT probe function to provide EC functionality before
505 * the namespace has been evaluated.
507 * XXX This happens before the sysresource devices have been probed and
508 * attached so its resources come from nexus0. In practice, this isn't
509 * a problem but should be addressed eventually.
511 acpi_ec_ecdt_probe(dev);
512 acpi_hpet_table_probe(dev);
514 /* Bring device objects and regions online. */
515 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
516 device_printf(dev, "Could not initialize ACPI objects: %s\n",
517 AcpiFormatException(status));
522 * Setup our sysctl tree.
524 * XXX: This doesn't check to make sure that none of these fail.
526 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
527 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
528 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
529 device_get_name(dev), CTLFLAG_RD, 0, "");
530 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
531 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
532 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
533 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
534 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
535 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
536 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
537 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
538 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
539 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
540 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
541 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
542 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
543 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
544 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
545 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
546 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
547 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
548 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
549 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
551 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
552 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
553 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
554 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
555 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
556 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
557 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
558 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
559 OID_AUTO, "handle_reboot", CTLFLAG_RW,
560 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
563 * Default to 1 second before sleeping to give some machines time to
566 sc->acpi_sleep_delay = 1;
568 sc->acpi_verbose = 1;
569 if ((env = getenv("hw.acpi.verbose")) != NULL) {
570 if (strcmp(env, "0") != 0)
571 sc->acpi_verbose = 1;
575 /* Only enable S4BIOS by default if the FACS says it is available. */
576 status = AcpiGetTable(ACPI_SIG_FACS, 0, (ACPI_TABLE_HEADER **)&facs);
577 if (ACPI_FAILURE(status)) {
578 device_printf(dev, "couldn't get FACS: %s\n",
579 AcpiFormatException(status));
583 if (facs->Flags & ACPI_FACS_S4_BIOS_PRESENT)
587 * Dispatch the default sleep state to devices. The lid switch is set
588 * to NONE by default to avoid surprising users.
590 sc->acpi_power_button_sx = ACPI_STATE_S5;
591 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
592 sc->acpi_standby_sx = ACPI_STATE_S1;
593 sc->acpi_suspend_sx = ACPI_STATE_S3;
595 /* Pick the first valid sleep state for the sleep button default. */
596 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
597 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
598 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
599 sc->acpi_sleep_button_sx = state;
603 acpi_enable_fixed_events(sc);
606 * Scan the namespace and attach/initialise children.
609 /* Register our shutdown handler. */
610 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
614 * Register our acpi event handlers.
615 * XXX should be configurable eg. via userland policy manager.
617 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
618 sc, ACPI_EVENT_PRI_LAST);
619 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
620 sc, ACPI_EVENT_PRI_LAST);
622 /* Flag our initial states. */
623 sc->acpi_enabled = 1;
624 sc->acpi_sstate = ACPI_STATE_S0;
625 sc->acpi_sleep_disabled = 0;
627 /* Create the control device */
628 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
630 sc->acpi_dev_t->si_drv1 = sc;
632 if ((error = acpi_machdep_init(dev)))
635 /* Register ACPI again to pass the correct argument of pm_func. */
636 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
638 if (!acpi_disabled("bus"))
639 acpi_probe_children(dev);
644 return_VALUE (error);
648 acpi_suspend(device_t dev)
650 device_t child, *devlist;
651 int error, i, numdevs, pstate;
655 /* First give child devices a chance to suspend. */
656 error = bus_generic_suspend(dev);
661 * Now, set them into the appropriate power state, usually D3. If the
662 * device has an _SxD method for the next sleep state, use that power
665 device_get_children(dev, &devlist, &numdevs);
666 for (i = 0; i < numdevs; i++) {
667 /* If the device is not attached, we've powered it down elsewhere. */
669 if (!device_is_attached(child))
673 * Default to D3 for all sleep states. The _SxD method is optional
674 * so set the powerstate even if it's absent.
676 pstate = PCI_POWERSTATE_D3;
677 error = acpi_device_pwr_for_sleep(device_get_parent(child),
679 if ((error == 0 || error == ESRCH) && acpi_do_powerstate)
680 pci_set_powerstate(child, pstate);
682 free(devlist, M_TEMP);
689 acpi_resume(device_t dev)
693 device_t child, *devlist;
698 * Put all devices in D0 before resuming them. Call _S0D on each one
699 * since some systems expect this.
701 device_get_children(dev, &devlist, &numdevs);
702 for (i = 0; i < numdevs; i++) {
704 handle = acpi_get_handle(child);
706 AcpiEvaluateObject(handle, "_S0D", NULL, NULL);
707 if (device_is_attached(child) && acpi_do_powerstate)
708 pci_set_powerstate(child, PCI_POWERSTATE_D0);
710 free(devlist, M_TEMP);
712 return (bus_generic_resume(dev));
716 acpi_shutdown(device_t dev)
721 /* Allow children to shutdown first. */
722 bus_generic_shutdown(dev);
725 * Enable any GPEs that are able to power-on the system (i.e., RTC).
726 * Also, disable any that are not valid for this state (most).
728 acpi_wake_prep_walk(ACPI_STATE_S5);
734 * Handle a new device being added
737 acpi_add_child(device_t bus, int order, const char *name, int unit)
739 struct acpi_device *ad;
742 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
745 resource_list_init(&ad->ad_rl);
747 child = device_add_child_ordered(bus, order, name, unit);
749 device_set_ivars(child, ad);
756 acpi_print_child(device_t bus, device_t child)
758 struct acpi_device *adev = device_get_ivars(child);
759 struct resource_list *rl = &adev->ad_rl;
762 retval += bus_print_child_header(bus, child);
763 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
764 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
765 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
766 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
767 if (device_get_flags(child))
768 retval += printf(" flags %#x", device_get_flags(child));
769 retval += bus_print_child_footer(bus, child);
775 * If this device is an ACPI child but no one claimed it, attempt
776 * to power it off. We'll power it back up when a driver is added.
778 * XXX Disabled for now since many necessary devices (like fdc and
779 * ATA) don't claim the devices we created for them but still expect
780 * them to be powered up.
783 acpi_probe_nomatch(device_t bus, device_t child)
786 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
790 * If a new driver has a chance to probe a child, first power it up.
792 * XXX Disabled for now (see acpi_probe_nomatch for details).
795 acpi_driver_added(device_t dev, driver_t *driver)
797 device_t child, *devlist;
800 DEVICE_IDENTIFY(driver, dev);
801 device_get_children(dev, &devlist, &numdevs);
802 for (i = 0; i < numdevs; i++) {
804 if (device_get_state(child) == DS_NOTPRESENT) {
805 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
806 if (device_probe_and_attach(child) != 0)
807 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
810 free(devlist, M_TEMP);
813 /* Location hint for devctl(8) */
815 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
818 struct acpi_device *dinfo = device_get_ivars(child);
820 if (dinfo->ad_handle)
821 snprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
823 snprintf(buf, buflen, "unknown");
827 /* PnP information for devctl(8) */
829 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
832 ACPI_BUFFER adbuf = {ACPI_ALLOCATE_BUFFER, NULL};
833 ACPI_DEVICE_INFO *adinfo;
834 struct acpi_device *dinfo = device_get_ivars(child);
838 error = AcpiGetObjectInfo(dinfo->ad_handle, &adbuf);
839 adinfo = (ACPI_DEVICE_INFO *) adbuf.Pointer;
841 snprintf(buf, buflen, "unknown");
843 snprintf(buf, buflen, "_HID=%s _UID=%lu",
844 (adinfo->Valid & ACPI_VALID_HID) ?
845 adinfo->HardwareId.Value : "none",
846 (adinfo->Valid & ACPI_VALID_UID) ?
847 strtoul(adinfo->UniqueId.Value, &end, 10) : 0);
855 * Handle per-device ivars
858 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
860 struct acpi_device *ad;
862 if ((ad = device_get_ivars(child)) == NULL) {
863 printf("device has no ivars\n");
867 /* ACPI and ISA compatibility ivars */
869 case ACPI_IVAR_HANDLE:
870 *(ACPI_HANDLE *)result = ad->ad_handle;
872 case ACPI_IVAR_MAGIC:
873 *(uintptr_t *)result = ad->ad_magic;
875 case ACPI_IVAR_PRIVATE:
876 *(void **)result = ad->ad_private;
878 case ACPI_IVAR_FLAGS:
879 *(int *)result = ad->ad_flags;
881 case ISA_IVAR_VENDORID:
882 case ISA_IVAR_SERIAL:
883 case ISA_IVAR_COMPATID:
886 case ISA_IVAR_LOGICALID:
887 *(int *)result = acpi_isa_get_logicalid(child);
897 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
899 struct acpi_device *ad;
901 if ((ad = device_get_ivars(child)) == NULL) {
902 printf("device has no ivars\n");
907 case ACPI_IVAR_HANDLE:
908 ad->ad_handle = (ACPI_HANDLE)value;
910 case ACPI_IVAR_MAGIC:
911 ad->ad_magic = (uintptr_t)value;
913 case ACPI_IVAR_PRIVATE:
914 ad->ad_private = (void *)value;
916 case ACPI_IVAR_FLAGS:
917 ad->ad_flags = (int)value;
920 panic("bad ivar write request (%d)", index);
928 * Handle child resource allocation/removal
930 static struct resource_list *
931 acpi_get_rlist(device_t dev, device_t child)
933 struct acpi_device *ad;
935 ad = device_get_ivars(child);
940 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
941 * duplicates, we merge any in the sysresource attach routine.
944 acpi_sysres_alloc(device_t dev)
946 struct resource *res;
947 struct resource_list *rl;
948 struct resource_list_entry *rle;
950 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
955 * Probe/attach any sysresource devices. This would be unnecessary if we
956 * had multi-pass probe/attach.
958 if (device_get_children(dev, &children, &child_count) != 0)
960 for (i = 0; i < child_count; i++) {
961 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
962 device_probe_and_attach(children[i]);
964 free(children, M_TEMP);
966 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
967 STAILQ_FOREACH(rle, rl, link) {
968 if (rle->res != NULL) {
969 device_printf(dev, "duplicate resource for %lx\n", rle->start);
973 /* Only memory and IO resources are valid here. */
985 /* Pre-allocate resource and add to our rman pool. */
986 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
987 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
989 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
992 device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
993 rle->start, rle->count, rle->type);
998 static struct resource *
999 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
1000 u_long start, u_long end, u_long count, u_int flags)
1003 struct acpi_device *ad = device_get_ivars(child);
1004 struct resource_list *rl = &ad->ad_rl;
1005 struct resource_list_entry *rle;
1006 struct resource *res;
1011 /* We only handle memory and IO resources through rman. */
1013 case SYS_RES_IOPORT:
1016 case SYS_RES_MEMORY:
1017 rm = &acpi_rman_mem;
1023 ACPI_SERIAL_BEGIN(acpi);
1026 * If this is an allocation of the "default" range for a given RID, and
1027 * we know what the resources for this device are (i.e., they're on the
1028 * child's resource list), use those start/end values.
1030 if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) {
1031 rle = resource_list_find(rl, type, *rid);
1040 * If this is an allocation of a specific range, see if we can satisfy
1041 * the request from our system resource regions. If we can't, pass the
1042 * request up to the parent.
1044 if (start + count - 1 == end && rm != NULL)
1045 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1048 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1049 start, end, count, flags);
1051 rman_set_rid(res, *rid);
1053 /* If requested, activate the resource using the parent's method. */
1054 if (flags & RF_ACTIVE)
1055 if (bus_activate_resource(child, type, *rid, res) != 0) {
1056 rman_release_resource(res);
1062 if (res != NULL && device_get_parent(child) == bus)
1066 * Since bus_config_intr() takes immediate effect, we cannot
1067 * configure the interrupt associated with a device when we
1068 * parse the resources but have to defer it until a driver
1069 * actually allocates the interrupt via bus_alloc_resource().
1071 * XXX: Should we handle the lookup failing?
1073 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
1074 acpi_config_intr(child, &ares);
1079 ACPI_SERIAL_END(acpi);
1084 acpi_release_resource(device_t bus, device_t child, int type, int rid,
1090 /* We only handle memory and IO resources through rman. */
1092 case SYS_RES_IOPORT:
1095 case SYS_RES_MEMORY:
1096 rm = &acpi_rman_mem;
1102 ACPI_SERIAL_BEGIN(acpi);
1105 * If this resource belongs to one of our internal managers,
1106 * deactivate it and release it to the local pool. If it doesn't,
1107 * pass this request up to the parent.
1109 if (rm != NULL && rman_is_region_manager(r, rm)) {
1110 if (rman_get_flags(r) & RF_ACTIVE) {
1111 ret = bus_deactivate_resource(child, type, rid, r);
1115 ret = rman_release_resource(r);
1117 ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
1120 ACPI_SERIAL_END(acpi);
1125 acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1127 struct resource_list *rl;
1129 rl = acpi_get_rlist(bus, child);
1130 resource_list_delete(rl, type, rid);
1133 /* Allocate an IO port or memory resource, given its GAS. */
1135 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1136 struct resource **res, u_int flags)
1138 int error, res_type;
1141 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1144 /* We only support memory and IO spaces. */
1145 switch (gas->SpaceId) {
1146 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1147 res_type = SYS_RES_MEMORY;
1149 case ACPI_ADR_SPACE_SYSTEM_IO:
1150 res_type = SYS_RES_IOPORT;
1153 return (EOPNOTSUPP);
1157 * If the register width is less than 8, assume the BIOS author means
1158 * it is a bit field and just allocate a byte.
1160 if (gas->BitWidth && gas->BitWidth < 8)
1163 /* Validate the address after we're sure we support the space. */
1164 if (gas->Address == 0 || gas->BitWidth == 0)
1167 bus_set_resource(dev, res_type, *rid, gas->Address,
1169 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1174 bus_delete_resource(dev, res_type, *rid);
1179 /* Probe _HID and _CID for compatible ISA PNP ids. */
1181 acpi_isa_get_logicalid(device_t dev)
1183 ACPI_DEVICE_INFO *devinfo;
1189 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1193 buf.Length = ACPI_ALLOCATE_BUFFER;
1195 /* Fetch and validate the HID. */
1196 if ((h = acpi_get_handle(dev)) == NULL)
1198 error = AcpiGetObjectInfo(h, &buf);
1199 if (ACPI_FAILURE(error))
1201 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1203 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
1204 pnpid = PNP_EISAID(devinfo->HardwareId.Value);
1207 if (buf.Pointer != NULL)
1208 AcpiOsFree(buf.Pointer);
1209 return_VALUE (pnpid);
1213 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1215 ACPI_DEVICE_INFO *devinfo;
1222 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1227 buf.Length = ACPI_ALLOCATE_BUFFER;
1229 /* Fetch and validate the CID */
1230 if ((h = acpi_get_handle(dev)) == NULL)
1232 error = AcpiGetObjectInfo(h, &buf);
1233 if (ACPI_FAILURE(error))
1235 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1236 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
1239 if (devinfo->CompatibilityId.Count < count)
1240 count = devinfo->CompatibilityId.Count;
1241 for (i = 0; i < count; i++) {
1242 if (strncmp(devinfo->CompatibilityId.Id[i].Value, "PNP", 3) != 0)
1244 *pnpid++ = PNP_EISAID(devinfo->CompatibilityId.Id[i].Value);
1249 if (buf.Pointer != NULL)
1250 AcpiOsFree(buf.Pointer);
1251 return_VALUE (valid);
1255 acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1260 h = acpi_get_handle(dev);
1261 if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE)
1264 /* Try to match one of the array of IDs with a HID or CID. */
1265 for (i = 0; ids[i] != NULL; i++) {
1266 if (acpi_MatchHid(h, ids[i]))
1273 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1274 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1279 h = ACPI_ROOT_OBJECT;
1280 else if ((h = acpi_get_handle(dev)) == NULL)
1281 return (AE_BAD_PARAMETER);
1282 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1286 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1288 struct acpi_softc *sc;
1294 sc = device_get_softc(bus);
1295 handle = acpi_get_handle(dev);
1298 * XXX If we find these devices, don't try to power them down.
1299 * The serial and IRDA ports on my T23 hang the system when
1300 * set to D3 and it appears that such legacy devices may
1301 * need special handling in their drivers.
1303 if (handle == NULL ||
1304 acpi_MatchHid(handle, "PNP0500") ||
1305 acpi_MatchHid(handle, "PNP0501") ||
1306 acpi_MatchHid(handle, "PNP0502") ||
1307 acpi_MatchHid(handle, "PNP0510") ||
1308 acpi_MatchHid(handle, "PNP0511"))
1312 * Override next state with the value from _SxD, if present. If no
1313 * dstate argument was provided, don't fetch the return value.
1315 snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1317 status = acpi_GetInteger(handle, sxd, dstate);
1319 status = AcpiEvaluateObject(handle, sxd, NULL, NULL);
1336 /* Callback arg for our implementation of walking the namespace. */
1337 struct acpi_device_scan_ctx {
1338 acpi_scan_cb_t user_fn;
1344 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1346 struct acpi_device_scan_ctx *ctx;
1347 device_t dev, old_dev;
1349 ACPI_OBJECT_TYPE type;
1352 * Skip this device if we think we'll have trouble with it or it is
1353 * the parent where the scan began.
1355 ctx = (struct acpi_device_scan_ctx *)arg;
1356 if (acpi_avoid(h) || h == ctx->parent)
1359 /* If this is not a valid device type (e.g., a method), skip it. */
1360 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1362 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1363 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1367 * Call the user function with the current device. If it is unchanged
1368 * afterwards, return. Otherwise, we update the handle to the new dev.
1370 old_dev = acpi_get_device(h);
1372 status = ctx->user_fn(h, &dev, level, ctx->arg);
1373 if (ACPI_FAILURE(status) || old_dev == dev)
1376 /* Remove the old child and its connection to the handle. */
1377 if (old_dev != NULL) {
1378 device_delete_child(device_get_parent(old_dev), old_dev);
1379 AcpiDetachData(h, acpi_fake_objhandler);
1382 /* Recreate the handle association if the user created a device. */
1384 AcpiAttachData(h, acpi_fake_objhandler, dev);
1390 acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1391 acpi_scan_cb_t user_fn, void *arg)
1394 struct acpi_device_scan_ctx ctx;
1396 if (acpi_disabled("children"))
1400 h = ACPI_ROOT_OBJECT;
1401 else if ((h = acpi_get_handle(dev)) == NULL)
1402 return (AE_BAD_PARAMETER);
1403 ctx.user_fn = user_fn;
1406 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1407 acpi_device_scan_cb, &ctx, NULL));
1411 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1412 * device power states since it's close enough to ACPI.
1415 acpi_set_powerstate_method(device_t bus, device_t child, int state)
1422 h = acpi_get_handle(child);
1423 if (state < ACPI_STATE_D0 || state > ACPI_STATE_D3)
1428 /* Ignore errors if the power methods aren't present. */
1429 status = acpi_pwr_switch_consumer(h, state);
1430 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND
1431 && status != AE_BAD_PARAMETER)
1432 device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n",
1433 state, acpi_name(h), AcpiFormatException(status));
1439 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1441 int result, cid_count, i;
1442 uint32_t lid, cids[8];
1444 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1447 * ISA-style drivers attached to ACPI may persist and
1448 * probe manually if we return ENOENT. We never want
1449 * that to happen, so don't ever return it.
1453 /* Scan the supplied IDs for a match */
1454 lid = acpi_isa_get_logicalid(child);
1455 cid_count = acpi_isa_get_compatid(child, cids, 8);
1456 while (ids && ids->ip_id) {
1457 if (lid == ids->ip_id) {
1461 for (i = 0; i < cid_count; i++) {
1462 if (cids[i] == ids->ip_id) {
1471 if (result == 0 && ids->ip_desc)
1472 device_set_desc(child, ids->ip_desc);
1474 return_VALUE (result);
1478 * Scan all of the ACPI namespace and attach child devices.
1480 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1481 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1482 * However, in violation of the spec, some systems place their PCI link
1483 * devices in \, so we have to walk the whole namespace. We check the
1484 * type of namespace nodes, so this should be ok.
1487 acpi_probe_children(device_t bus)
1490 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1493 * Scan the namespace and insert placeholders for all the devices that
1494 * we find. We also probe/attach any early devices.
1496 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1497 * we want to create nodes for all devices, not just those that are
1498 * currently present. (This assumes that we don't want to create/remove
1499 * devices as they appear, which might be smarter.)
1501 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1502 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
1505 /* Pre-allocate resources for our rman from any sysresource devices. */
1506 acpi_sysres_alloc(bus);
1508 /* Create any static children by calling device identify methods. */
1509 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1510 bus_generic_probe(bus);
1512 /* Probe/attach all children, created staticly and from the namespace. */
1513 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1514 bus_generic_attach(bus);
1517 * Some of these children may have attached others as part of their attach
1518 * process (eg. the root PCI bus driver), so rescan.
1520 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1521 bus_generic_attach(bus);
1523 /* Attach wake sysctls. */
1524 acpi_wake_sysctl_walk(bus);
1526 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1531 * Determine the probe order for a given device and return non-zero if it
1532 * should be attached immediately.
1535 acpi_probe_order(ACPI_HANDLE handle, int *order)
1539 * 1. I/O port and memory system resource holders
1540 * 2. Embedded controllers (to handle early accesses)
1541 * 3. PCI Link Devices
1543 if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
1545 else if (acpi_MatchHid(handle, "PNP0C09"))
1547 else if (acpi_MatchHid(handle, "PNP0C0F"))
1553 * Evaluate a child device and determine whether we might attach a device to
1557 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1559 ACPI_OBJECT_TYPE type;
1561 device_t bus, child;
1563 char *handle_str, **search;
1564 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI_", "\\_SB_", NULL};
1566 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1568 /* Skip this device if we think we'll have trouble with it. */
1569 if (acpi_avoid(handle))
1570 return_ACPI_STATUS (AE_OK);
1572 bus = (device_t)context;
1573 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1575 case ACPI_TYPE_DEVICE:
1576 case ACPI_TYPE_PROCESSOR:
1577 case ACPI_TYPE_THERMAL:
1578 case ACPI_TYPE_POWER:
1579 if (acpi_disabled("children"))
1583 * Since we scan from \, be sure to skip system scope objects.
1584 * At least \_SB and \_TZ are detected as devices (ACPI-CA bug?)
1586 handle_str = acpi_name(handle);
1587 for (search = scopes; *search != NULL; search++) {
1588 if (strcmp(handle_str, *search) == 0)
1591 if (*search != NULL)
1595 * Create a placeholder device for this node. Sort the placeholder
1596 * so that the probe/attach passes will run breadth-first. Orders
1597 * less than 10 are reserved for special objects (i.e., system
1598 * resources). Larger values are used for all other devices.
1600 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1601 order = (level + 1) * 10;
1602 acpi_probe_order(handle, &order);
1603 child = BUS_ADD_CHILD(bus, order, NULL, -1);
1607 /* Associate the handle with the device_t and vice versa. */
1608 acpi_set_handle(child, handle);
1609 AcpiAttachData(handle, acpi_fake_objhandler, child);
1612 * Check that the device is present. If it's not present,
1613 * leave it disabled (so that we have a device_t attached to
1614 * the handle, but we don't probe it).
1616 * XXX PCI link devices sometimes report "present" but not
1617 * "functional" (i.e. if disabled). Go ahead and probe them
1618 * anyway since we may enable them later.
1620 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1621 /* Never disable PCI link devices. */
1622 if (acpi_MatchHid(handle, "PNP0C0F"))
1625 * Docking stations should remain enabled since the system
1626 * may be undocked at boot.
1628 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1631 device_disable(child);
1636 * Get the device's resource settings and attach them.
1637 * Note that if the device has _PRS but no _CRS, we need
1638 * to decide when it's appropriate to try to configure the
1639 * device. Ignore the return value here; it's OK for the
1640 * device not to have any resources.
1642 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
1647 return_ACPI_STATUS (AE_OK);
1651 * AcpiAttachData() requires an object handler but never uses it. This is a
1652 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1655 acpi_fake_objhandler(ACPI_HANDLE h, UINT32 fn, void *data)
1660 acpi_shutdown_final(void *arg, int howto)
1662 struct acpi_softc *sc;
1666 * XXX Shutdown code should only run on the BSP (cpuid 0).
1667 * Some chipsets do not power off the system correctly if called from
1671 if ((howto & RB_POWEROFF) != 0) {
1672 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1673 if (ACPI_FAILURE(status)) {
1674 printf("AcpiEnterSleepStatePrep failed - %s\n",
1675 AcpiFormatException(status));
1678 printf("Powering system off using ACPI\n");
1679 ACPI_DISABLE_IRQS();
1680 status = AcpiEnterSleepState(ACPI_STATE_S5);
1681 if (ACPI_FAILURE(status)) {
1682 printf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1685 printf("ACPI power-off failed - timeout\n");
1687 } else if ((howto & RB_HALT) == 0 &&
1688 (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) &&
1689 sc->acpi_handle_reboot) {
1690 /* Reboot using the reset register. */
1691 status = AcpiHwLowLevelWrite(
1692 AcpiGbl_FADT.ResetRegister.BitWidth,
1693 AcpiGbl_FADT.ResetValue, &AcpiGbl_FADT.ResetRegister);
1694 if (ACPI_FAILURE(status)) {
1695 printf("ACPI reset failed - %s\n", AcpiFormatException(status));
1698 printf("ACPI reset failed - timeout\n");
1700 } else if (sc->acpi_do_disable && panicstr == NULL) {
1702 * Only disable ACPI if the user requested. On some systems, writing
1703 * the disable value to SMI_CMD hangs the system.
1705 printf("Shutting down ACPI\n");
1711 acpi_enable_fixed_events(struct acpi_softc *sc)
1713 static int first_time = 1;
1715 /* Enable and clear fixed events and install handlers. */
1716 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
1717 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1718 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1719 acpi_event_power_button_sleep, sc);
1721 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1723 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
1724 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1725 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1726 acpi_event_sleep_button_sleep, sc);
1728 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1735 * Returns true if the device is actually present and should
1736 * be attached to. This requires the present, enabled, UI-visible
1737 * and diagnostics-passed bits to be set.
1740 acpi_DeviceIsPresent(device_t dev)
1742 ACPI_DEVICE_INFO *devinfo;
1749 if ((h = acpi_get_handle(dev)) == NULL)
1752 buf.Length = ACPI_ALLOCATE_BUFFER;
1753 error = AcpiGetObjectInfo(h, &buf);
1754 if (ACPI_FAILURE(error))
1756 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1758 /* If no _STA method, must be present */
1759 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1762 /* Return true for 'present' and 'functioning' */
1763 if (ACPI_DEVICE_PRESENT(devinfo->CurrentStatus))
1766 AcpiOsFree(buf.Pointer);
1771 * Returns true if the battery is actually present and inserted.
1774 acpi_BatteryIsPresent(device_t dev)
1776 ACPI_DEVICE_INFO *devinfo;
1783 if ((h = acpi_get_handle(dev)) == NULL)
1786 buf.Length = ACPI_ALLOCATE_BUFFER;
1787 error = AcpiGetObjectInfo(h, &buf);
1788 if (ACPI_FAILURE(error))
1790 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1792 /* If no _STA method, must be present */
1793 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1796 /* Return true for 'present', 'battery present', and 'functioning' */
1797 if (ACPI_BATTERY_PRESENT(devinfo->CurrentStatus))
1800 AcpiOsFree(buf.Pointer);
1805 * Match a HID string against a handle
1808 acpi_MatchHid(ACPI_HANDLE h, const char *hid)
1810 ACPI_DEVICE_INFO *devinfo;
1816 if (hid == NULL || h == NULL)
1819 buf.Length = ACPI_ALLOCATE_BUFFER;
1820 error = AcpiGetObjectInfo(h, &buf);
1821 if (ACPI_FAILURE(error))
1823 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1825 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
1826 strcmp(hid, devinfo->HardwareId.Value) == 0)
1828 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
1829 for (i = 0; i < devinfo->CompatibilityId.Count; i++) {
1830 if (strcmp(hid, devinfo->CompatibilityId.Id[i].Value) == 0) {
1837 AcpiOsFree(buf.Pointer);
1842 * Return the handle of a named object within our scope, ie. that of (parent)
1843 * or one if its parents.
1846 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1851 /* Walk back up the tree to the root */
1853 status = AcpiGetHandle(parent, path, &r);
1854 if (ACPI_SUCCESS(status)) {
1858 /* XXX Return error here? */
1859 if (status != AE_NOT_FOUND)
1861 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1862 return (AE_NOT_FOUND);
1867 /* Find the difference between two PM tick counts. */
1869 acpi_TimerDelta(uint32_t end, uint32_t start)
1874 delta = end - start;
1875 else if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
1876 delta = ((0xFFFFFFFF - start) + end + 1);
1878 delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
1883 * Allocate a buffer with a preset data size.
1886 acpi_AllocBuffer(int size)
1890 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
1893 buf->Pointer = (void *)(buf + 1);
1898 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
1901 ACPI_OBJECT_LIST args;
1903 arg1.Type = ACPI_TYPE_INTEGER;
1904 arg1.Integer.Value = number;
1906 args.Pointer = &arg1;
1908 return (AcpiEvaluateObject(handle, path, &args, NULL));
1912 * Evaluate a path that should return an integer.
1915 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
1922 handle = ACPI_ROOT_OBJECT;
1925 * Assume that what we've been pointed at is an Integer object, or
1926 * a method that will return an Integer.
1928 buf.Pointer = ¶m;
1929 buf.Length = sizeof(param);
1930 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1931 if (ACPI_SUCCESS(status)) {
1932 if (param.Type == ACPI_TYPE_INTEGER)
1933 *number = param.Integer.Value;
1939 * In some applications, a method that's expected to return an Integer
1940 * may instead return a Buffer (probably to simplify some internal
1941 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1942 * convert it into an Integer as best we can.
1946 if (status == AE_BUFFER_OVERFLOW) {
1947 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
1948 status = AE_NO_MEMORY;
1950 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1951 if (ACPI_SUCCESS(status))
1952 status = acpi_ConvertBufferToInteger(&buf, number);
1953 AcpiOsFree(buf.Pointer);
1960 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
1966 p = (ACPI_OBJECT *)bufp->Pointer;
1967 if (p->Type == ACPI_TYPE_INTEGER) {
1968 *number = p->Integer.Value;
1971 if (p->Type != ACPI_TYPE_BUFFER)
1973 if (p->Buffer.Length > sizeof(int))
1974 return (AE_BAD_DATA);
1977 val = p->Buffer.Pointer;
1978 for (i = 0; i < p->Buffer.Length; i++)
1979 *number += val[i] << (i * 8);
1984 * Iterate over the elements of an a package object, calling the supplied
1985 * function for each element.
1987 * XXX possible enhancement might be to abort traversal on error.
1990 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
1991 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
1996 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
1997 return (AE_BAD_PARAMETER);
1999 /* Iterate over components */
2001 comp = pkg->Package.Elements;
2002 for (; i < pkg->Package.Count; i++, comp++)
2009 * Find the (index)th resource object in a set.
2012 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2017 rp = (ACPI_RESOURCE *)buf->Pointer;
2021 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2022 return (AE_BAD_PARAMETER);
2024 /* Check for terminator */
2025 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2026 return (AE_NOT_FOUND);
2027 rp = ACPI_NEXT_RESOURCE(rp);
2036 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2038 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2039 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2040 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2043 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2046 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2051 /* Initialise the buffer if necessary. */
2052 if (buf->Pointer == NULL) {
2053 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2054 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2055 return (AE_NO_MEMORY);
2056 rp = (ACPI_RESOURCE *)buf->Pointer;
2057 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2064 * Scan the current buffer looking for the terminator.
2065 * This will either find the terminator or hit the end
2066 * of the buffer and return an error.
2068 rp = (ACPI_RESOURCE *)buf->Pointer;
2070 /* Range check, don't go outside the buffer */
2071 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2072 return (AE_BAD_PARAMETER);
2073 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2075 rp = ACPI_NEXT_RESOURCE(rp);
2079 * Check the size of the buffer and expand if required.
2082 * size of existing resources before terminator +
2083 * size of new resource and header +
2084 * size of terminator.
2086 * Note that this loop should really only run once, unless
2087 * for some reason we are stuffing a *really* huge resource.
2089 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2090 res->Length + ACPI_RS_SIZE_NO_DATA +
2091 ACPI_RS_SIZE_MIN) >= buf->Length) {
2092 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2093 return (AE_NO_MEMORY);
2094 bcopy(buf->Pointer, newp, buf->Length);
2095 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2096 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
2097 AcpiOsFree(buf->Pointer);
2098 buf->Pointer = newp;
2099 buf->Length += buf->Length;
2102 /* Insert the new resource. */
2103 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2105 /* And add the terminator. */
2106 rp = ACPI_NEXT_RESOURCE(rp);
2107 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2114 * Set interrupt model.
2117 acpi_SetIntrModel(int model)
2120 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2124 * DEPRECATED. This interface has serious deficiencies and will be
2127 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2128 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2131 acpi_SetSleepState(struct acpi_softc *sc, int state)
2137 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2140 return (acpi_EnterSleepState(sc, state));
2144 acpi_sleep_force(void *arg)
2146 struct acpi_softc *sc;
2148 printf("acpi: suspend request timed out, forcing sleep now\n");
2150 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2151 printf("acpi: force sleep state S%d failed\n", sc->acpi_next_sstate);
2155 * Request that the system enter the given suspend state. All /dev/apm
2156 * devices and devd(8) will be notified. Userland then has a chance to
2157 * save state and acknowledge the request. The system sleeps once all
2161 acpi_ReqSleepState(struct acpi_softc *sc, int state)
2163 struct apm_clone_data *clone;
2165 if (state < ACPI_STATE_S1 || state > ACPI_STATE_S5)
2168 /* S5 (soft-off) should be entered directly with no waiting. */
2169 if (state == ACPI_STATE_S5) {
2170 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, state)))
2176 /* If a suspend request is already in progress, just return. */
2178 if (sc->acpi_next_sstate != 0) {
2183 /* Record the pending state and notify all apm devices. */
2184 sc->acpi_next_sstate = state;
2185 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2186 clone->notify_status = APM_EV_NONE;
2187 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
2188 selwakeuppri(&clone->sel_read, PZERO);
2189 KNOTE_UNLOCKED(&clone->sel_read.si_note, 0);
2193 /* Now notify devd(8) also. */
2194 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2197 * Set a timeout to fire if userland doesn't ack the suspend request
2198 * in time. This way we still eventually go to sleep if we were
2199 * overheating or running low on battery, even if userland is hung.
2200 * We cancel this timeout once all userland acks are in or the
2201 * suspend request is aborted.
2203 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2209 * Acknowledge (or reject) a pending sleep state. The caller has
2210 * prepared for suspend and is now ready for it to proceed. If the
2211 * error argument is non-zero, it indicates suspend should be cancelled
2212 * and gives an errno value describing why. Once all votes are in,
2213 * we suspend the system.
2216 acpi_AckSleepState(struct apm_clone_data *clone, int error)
2218 struct acpi_softc *sc;
2221 /* If no pending sleep state, return an error. */
2223 sc = clone->acpi_sc;
2224 if (sc->acpi_next_sstate == 0) {
2229 /* Caller wants to abort suspend process. */
2231 sc->acpi_next_sstate = 0;
2232 callout_stop(&sc->susp_force_to);
2233 printf("acpi: listener on %s cancelled the pending suspend\n",
2234 devtoname(clone->cdev));
2240 * Mark this device as acking the suspend request. Then, walk through
2241 * all devices, seeing if they agree yet. We only count devices that
2242 * are writable since read-only devices couldn't ack the request.
2244 clone->notify_status = APM_EV_ACKED;
2246 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2247 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2248 clone->notify_status != APM_EV_ACKED) {
2254 /* If all devices have voted "yes", we will suspend now. */
2256 callout_stop(&sc->susp_force_to);
2260 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2268 acpi_sleep_enable(void *arg)
2271 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
2274 enum acpi_sleep_state {
2277 ACPI_SS_DEV_SUSPEND,
2283 * Enter the desired system sleep state.
2285 * Currently we support S1-S5 but S4 is only S4BIOS
2288 acpi_EnterSleepState(struct acpi_softc *sc, int state)
2293 enum acpi_sleep_state slp_state;
2295 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2297 /* Re-entry once we're suspending is not allowed. */
2300 if (sc->acpi_sleep_disabled) {
2302 printf("acpi: suspend request ignored (not ready yet)\n");
2305 sc->acpi_sleep_disabled = 1;
2309 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2310 * drivers need this.
2313 slp_state = ACPI_SS_NONE;
2319 status = AcpiGetSleepTypeData(state, &TypeA, &TypeB);
2320 if (status == AE_NOT_FOUND) {
2321 device_printf(sc->acpi_dev,
2322 "Sleep state S%d not supported by BIOS\n", state);
2324 } else if (ACPI_FAILURE(status)) {
2325 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
2326 AcpiFormatException(status));
2330 sc->acpi_sstate = state;
2332 /* Enable any GPEs as appropriate and requested by the user. */
2333 acpi_wake_prep_walk(state);
2334 slp_state = ACPI_SS_GPE_SET;
2337 * Inform all devices that we are going to sleep. If at least one
2338 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2340 * XXX Note that a better two-pass approach with a 'veto' pass
2341 * followed by a "real thing" pass would be better, but the current
2342 * bus interface does not provide for this.
2344 if (DEVICE_SUSPEND(root_bus) != 0) {
2345 device_printf(sc->acpi_dev, "device_suspend failed\n");
2348 slp_state = ACPI_SS_DEV_SUSPEND;
2350 /* If testing device suspend only, back out of everything here. */
2351 if (acpi_susp_bounce)
2354 status = AcpiEnterSleepStatePrep(state);
2355 if (ACPI_FAILURE(status)) {
2356 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2357 AcpiFormatException(status));
2360 slp_state = ACPI_SS_SLP_PREP;
2362 if (sc->acpi_sleep_delay > 0)
2363 DELAY(sc->acpi_sleep_delay * 1000000);
2365 if (state != ACPI_STATE_S1) {
2366 acpi_sleep_machdep(sc, state);
2368 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2369 if (state == ACPI_STATE_S4)
2372 ACPI_DISABLE_IRQS();
2373 status = AcpiEnterSleepState(state);
2374 if (ACPI_FAILURE(status)) {
2375 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2376 AcpiFormatException(status));
2380 slp_state = ACPI_SS_SLEPT;
2384 * Shut down cleanly and power off. This will call us back through the
2385 * shutdown handlers.
2387 shutdown_nice(RB_POWEROFF);
2391 status = AE_BAD_PARAMETER;
2396 * Back out state according to how far along we got in the suspend
2397 * process. This handles both the error and success cases.
2399 sc->acpi_next_sstate = 0;
2400 if (slp_state >= ACPI_SS_GPE_SET) {
2401 acpi_wake_prep_walk(state);
2402 sc->acpi_sstate = ACPI_STATE_S0;
2404 if (slp_state >= ACPI_SS_SLP_PREP)
2405 AcpiLeaveSleepState(state);
2406 if (slp_state >= ACPI_SS_DEV_SUSPEND)
2407 DEVICE_RESUME(root_bus);
2408 if (slp_state >= ACPI_SS_SLEPT)
2409 acpi_enable_fixed_events(sc);
2411 /* Allow another sleep request after a while. */
2412 if (state != ACPI_STATE_S5)
2413 timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);
2415 /* Run /etc/rc.resume after we are back. */
2416 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2419 return_ACPI_STATUS (status);
2422 /* Initialize a device's wake GPE. */
2424 acpi_wake_init(device_t dev, int type)
2426 struct acpi_prw_data prw;
2428 /* Evaluate _PRW to find the GPE. */
2429 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2432 /* Set the requested type for the GPE (runtime, wake, or both). */
2433 if (ACPI_FAILURE(AcpiSetGpeType(prw.gpe_handle, prw.gpe_bit, type))) {
2434 device_printf(dev, "set GPE type failed\n");
2441 /* Enable or disable the device's wake GPE. */
2443 acpi_wake_set_enable(device_t dev, int enable)
2445 struct acpi_prw_data prw;
2449 /* Make sure the device supports waking the system and get the GPE. */
2450 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2453 flags = acpi_get_flags(dev);
2455 status = AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2456 if (ACPI_FAILURE(status)) {
2457 device_printf(dev, "enable wake failed\n");
2460 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2462 status = AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2463 if (ACPI_FAILURE(status)) {
2464 device_printf(dev, "disable wake failed\n");
2467 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2474 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
2476 struct acpi_prw_data prw;
2479 /* Check that this is a wake-capable device and get its GPE. */
2480 if (acpi_parse_prw(handle, &prw) != 0)
2482 dev = acpi_get_device(handle);
2485 * The destination sleep state must be less than (i.e., higher power)
2486 * or equal to the value specified by _PRW. If this GPE cannot be
2487 * enabled for the next sleep state, then disable it. If it can and
2488 * the user requested it be enabled, turn on any required power resources
2491 if (sstate > prw.lowest_wake) {
2492 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2494 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2495 acpi_name(handle), sstate);
2496 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2497 acpi_pwr_wake_enable(handle, 1);
2498 acpi_SetInteger(handle, "_PSW", 1);
2500 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2501 acpi_name(handle), sstate);
2508 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
2510 struct acpi_prw_data prw;
2514 * Check that this is a wake-capable device and get its GPE. Return
2515 * now if the user didn't enable this device for wake.
2517 if (acpi_parse_prw(handle, &prw) != 0)
2519 dev = acpi_get_device(handle);
2520 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2524 * If this GPE couldn't be enabled for the previous sleep state, it was
2525 * disabled before going to sleep so re-enable it. If it was enabled,
2526 * clear _PSW and turn off any power resources it used.
2528 if (sstate > prw.lowest_wake) {
2529 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2531 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2533 acpi_SetInteger(handle, "_PSW", 0);
2534 acpi_pwr_wake_enable(handle, 0);
2536 device_printf(dev, "run_prep cleaned up for %s\n",
2544 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
2548 /* If suspending, run the sleep prep function, otherwise wake. */
2549 sstate = *(int *)context;
2550 if (AcpiGbl_SystemAwakeAndRunning)
2551 acpi_wake_sleep_prep(handle, sstate);
2553 acpi_wake_run_prep(handle, sstate);
2557 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2559 acpi_wake_prep_walk(int sstate)
2561 ACPI_HANDLE sb_handle;
2563 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
2564 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
2565 acpi_wake_prep, &sstate, NULL);
2569 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2571 acpi_wake_sysctl_walk(device_t dev)
2573 int error, i, numdevs;
2578 error = device_get_children(dev, &devlist, &numdevs);
2579 if (error != 0 || numdevs == 0) {
2581 free(devlist, M_TEMP);
2584 for (i = 0; i < numdevs; i++) {
2586 acpi_wake_sysctl_walk(child);
2587 if (!device_is_attached(child))
2589 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
2590 if (ACPI_SUCCESS(status)) {
2591 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
2592 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
2593 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
2594 acpi_wake_set_sysctl, "I", "Device set to wake the system");
2597 free(devlist, M_TEMP);
2602 /* Enable or disable wake from userland. */
2604 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2609 dev = (device_t)arg1;
2610 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
2612 error = sysctl_handle_int(oidp, &enable, 0, req);
2613 if (error != 0 || req->newptr == NULL)
2615 if (enable != 0 && enable != 1)
2618 return (acpi_wake_set_enable(dev, enable));
2621 /* Parse a device's _PRW into a structure. */
2623 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2626 ACPI_BUFFER prw_buffer;
2627 ACPI_OBJECT *res, *res2;
2628 int error, i, power_count;
2630 if (h == NULL || prw == NULL)
2634 * The _PRW object (7.2.9) is only required for devices that have the
2635 * ability to wake the system from a sleeping state.
2638 prw_buffer.Pointer = NULL;
2639 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2640 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2641 if (ACPI_FAILURE(status))
2643 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2646 if (!ACPI_PKG_VALID(res, 2))
2650 * Element 1 of the _PRW object:
2651 * The lowest power system sleeping state that can be entered while still
2652 * providing wake functionality. The sleeping state being entered must
2653 * be less than (i.e., higher power) or equal to this value.
2655 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2659 * Element 0 of the _PRW object:
2661 switch (res->Package.Elements[0].Type) {
2662 case ACPI_TYPE_INTEGER:
2664 * If the data type of this package element is numeric, then this
2665 * _PRW package element is the bit index in the GPEx_EN, in the
2666 * GPE blocks described in the FADT, of the enable bit that is
2667 * enabled for the wake event.
2669 prw->gpe_handle = NULL;
2670 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2673 case ACPI_TYPE_PACKAGE:
2675 * If the data type of this package element is a package, then this
2676 * _PRW package element is itself a package containing two
2677 * elements. The first is an object reference to the GPE Block
2678 * device that contains the GPE that will be triggered by the wake
2679 * event. The second element is numeric and it contains the bit
2680 * index in the GPEx_EN, in the GPE Block referenced by the
2681 * first element in the package, of the enable bit that is enabled for
2684 * For example, if this field is a package then it is of the form:
2685 * Package() {\_SB.PCI0.ISA.GPE, 2}
2687 res2 = &res->Package.Elements[0];
2688 if (!ACPI_PKG_VALID(res2, 2))
2690 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2691 if (prw->gpe_handle == NULL)
2693 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2701 /* Elements 2 to N of the _PRW object are power resources. */
2702 power_count = res->Package.Count - 2;
2703 if (power_count > ACPI_PRW_MAX_POWERRES) {
2704 printf("ACPI device %s has too many power resources\n", acpi_name(h));
2707 prw->power_res_count = power_count;
2708 for (i = 0; i < power_count; i++)
2709 prw->power_res[i] = res->Package.Elements[i];
2712 if (prw_buffer.Pointer != NULL)
2713 AcpiOsFree(prw_buffer.Pointer);
2718 * ACPI Event Handlers
2721 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2724 acpi_system_eventhandler_sleep(void *arg, int state)
2728 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2730 /* Check if button action is disabled. */
2731 if (state == ACPI_S_STATES_MAX + 1)
2734 /* Request that the system prepare to enter the given suspend state. */
2735 ret = acpi_ReqSleepState((struct acpi_softc *)arg, state);
2737 printf("acpi: request to enter state S%d failed (err %d)\n",
2744 acpi_system_eventhandler_wakeup(void *arg, int state)
2747 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2749 /* Currently, nothing to do for wakeup. */
2755 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2758 acpi_event_power_button_sleep(void *context)
2760 struct acpi_softc *sc = (struct acpi_softc *)context;
2762 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2764 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2766 return_VALUE (ACPI_INTERRUPT_HANDLED);
2770 acpi_event_power_button_wake(void *context)
2772 struct acpi_softc *sc = (struct acpi_softc *)context;
2774 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2776 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2778 return_VALUE (ACPI_INTERRUPT_HANDLED);
2782 acpi_event_sleep_button_sleep(void *context)
2784 struct acpi_softc *sc = (struct acpi_softc *)context;
2786 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2788 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2790 return_VALUE (ACPI_INTERRUPT_HANDLED);
2794 acpi_event_sleep_button_wake(void *context)
2796 struct acpi_softc *sc = (struct acpi_softc *)context;
2798 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2800 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2802 return_VALUE (ACPI_INTERRUPT_HANDLED);
2806 * XXX This static buffer is suboptimal. There is no locking so only
2807 * use this for single-threaded callers.
2810 acpi_name(ACPI_HANDLE handle)
2813 static char data[256];
2815 buf.Length = sizeof(data);
2818 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
2820 return ("(unknown)");
2824 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2825 * parts of the namespace.
2828 acpi_avoid(ACPI_HANDLE handle)
2830 char *cp, *env, *np;
2833 np = acpi_name(handle);
2836 if ((env = getenv("debug.acpi.avoid")) == NULL)
2839 /* Scan the avoid list checking for a match */
2842 while (*cp != 0 && isspace(*cp))
2847 while (cp[len] != 0 && !isspace(cp[len]))
2849 if (!strncmp(cp, np, len)) {
2861 * Debugging/bug-avoidance. Disable ACPI subsystem components.
2864 acpi_disabled(char *subsys)
2869 if ((env = getenv("debug.acpi.disabled")) == NULL)
2871 if (strcmp(env, "all") == 0) {
2876 /* Scan the disable list, checking for a match. */
2879 while (*cp != '\0' && isspace(*cp))
2884 while (cp[len] != '\0' && !isspace(cp[len]))
2886 if (strncmp(cp, subsys, len) == 0) {
2898 * Control interface.
2900 * We multiplex ioctls for all participating ACPI devices here. Individual
2901 * drivers wanting to be accessible via /dev/acpi should use the
2902 * register/deregister interface to make their handlers visible.
2904 struct acpi_ioctl_hook
2906 TAILQ_ENTRY(acpi_ioctl_hook) link;
2912 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
2913 static int acpi_ioctl_hooks_initted;
2916 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
2918 struct acpi_ioctl_hook *hp;
2920 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
2927 if (acpi_ioctl_hooks_initted == 0) {
2928 TAILQ_INIT(&acpi_ioctl_hooks);
2929 acpi_ioctl_hooks_initted = 1;
2931 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
2938 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
2940 struct acpi_ioctl_hook *hp;
2943 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
2944 if (hp->cmd == cmd && hp->fn == fn)
2948 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
2949 free(hp, M_ACPIDEV);
2955 acpiopen(struct cdev *dev, int flag, int fmt, d_thread_t *td)
2961 acpiclose(struct cdev *dev, int flag, int fmt, d_thread_t *td)
2967 acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
2969 struct acpi_softc *sc;
2970 struct acpi_ioctl_hook *hp;
2978 * Scan the list of registered ioctls, looking for handlers.
2981 if (acpi_ioctl_hooks_initted)
2982 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
2988 return (hp->fn(cmd, addr, hp->arg));
2991 * Core ioctls are not permitted for non-writable user.
2992 * Currently, other ioctls just fetch information.
2993 * Not changing system behavior.
2995 if ((flag & FWRITE) == 0)
2998 /* Core system ioctls. */
3000 case ACPIIO_REQSLPSTATE:
3001 state = *(int *)addr;
3002 if (state != ACPI_STATE_S5)
3003 error = acpi_ReqSleepState(sc, state);
3005 printf("power off via acpi ioctl not supported\n");
3009 case ACPIIO_ACKSLPSTATE:
3010 error = *(int *)addr;
3011 error = acpi_AckSleepState(sc->acpi_clone, error);
3013 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3015 state = *(int *)addr;
3016 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
3017 if (ACPI_SUCCESS(acpi_SetSleepState(sc, state)))
3029 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3033 UINT8 state, TypeA, TypeB;
3035 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3036 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++)
3037 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
3038 sbuf_printf(&sb, "S%d ", state);
3041 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3047 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3049 char sleep_state[10];
3051 u_int new_state, old_state;
3053 old_state = *(u_int *)oidp->oid_arg1;
3054 if (old_state > ACPI_S_STATES_MAX + 1)
3055 strlcpy(sleep_state, "unknown", sizeof(sleep_state));
3057 strlcpy(sleep_state, sleep_state_names[old_state], sizeof(sleep_state));
3058 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3059 if (error == 0 && req->newptr != NULL) {
3060 new_state = ACPI_STATE_S0;
3061 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++)
3062 if (strcmp(sleep_state, sleep_state_names[new_state]) == 0)
3064 if (new_state <= ACPI_S_STATES_MAX + 1) {
3065 if (new_state != old_state)
3066 *(u_int *)oidp->oid_arg1 = new_state;
3074 /* Inform devctl(4) when we receive a Notify. */
3076 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3078 char notify_buf[16];
3079 ACPI_BUFFER handle_buf;
3082 if (subsystem == NULL)
3085 handle_buf.Pointer = NULL;
3086 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3087 status = AcpiNsHandleToPathname(h, &handle_buf);
3088 if (ACPI_FAILURE(status))
3090 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
3091 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
3092 AcpiOsFree(handle_buf.Pointer);
3097 * Support for parsing debug options from the kernel environment.
3099 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3100 * by specifying the names of the bits in the debug.acpi.layer and
3101 * debug.acpi.level environment variables. Bits may be unset by
3102 * prefixing the bit name with !.
3110 static struct debugtag dbg_layer[] = {
3111 {"ACPI_UTILITIES", ACPI_UTILITIES},
3112 {"ACPI_HARDWARE", ACPI_HARDWARE},
3113 {"ACPI_EVENTS", ACPI_EVENTS},
3114 {"ACPI_TABLES", ACPI_TABLES},
3115 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3116 {"ACPI_PARSER", ACPI_PARSER},
3117 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3118 {"ACPI_EXECUTER", ACPI_EXECUTER},
3119 {"ACPI_RESOURCES", ACPI_RESOURCES},
3120 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3121 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3122 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3123 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3125 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3126 {"ACPI_BATTERY", ACPI_BATTERY},
3127 {"ACPI_BUS", ACPI_BUS},
3128 {"ACPI_BUTTON", ACPI_BUTTON},
3129 {"ACPI_EC", ACPI_EC},
3130 {"ACPI_FAN", ACPI_FAN},
3131 {"ACPI_POWERRES", ACPI_POWERRES},
3132 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3133 {"ACPI_THERMAL", ACPI_THERMAL},
3134 {"ACPI_TIMER", ACPI_TIMER},
3135 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3139 static struct debugtag dbg_level[] = {
3140 {"ACPI_LV_ERROR", ACPI_LV_ERROR},
3141 {"ACPI_LV_WARN", ACPI_LV_WARN},
3142 {"ACPI_LV_INIT", ACPI_LV_INIT},
3143 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3144 {"ACPI_LV_INFO", ACPI_LV_INFO},
3145 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3147 /* Trace verbosity level 1 [Standard Trace Level] */
3148 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3149 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3150 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3151 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3152 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3153 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3154 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3155 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3156 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3157 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3158 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3159 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3160 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3161 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3162 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3164 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3165 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3166 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3167 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3168 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3169 {"ACPI_LV_ALL", ACPI_LV_ALL},
3171 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3172 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3173 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3174 {"ACPI_LV_IO", ACPI_LV_IO},
3175 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3176 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3178 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3179 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
3180 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
3181 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
3182 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
3183 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
3188 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
3200 while (*ep && !isspace(*ep))
3211 for (i = 0; tag[i].name != NULL; i++) {
3212 if (!strncmp(cp, tag[i].name, l)) {
3214 *flag |= tag[i].value;
3216 *flag &= ~tag[i].value;
3224 acpi_set_debugging(void *junk)
3226 char *layer, *level;
3233 layer = getenv("debug.acpi.layer");
3234 level = getenv("debug.acpi.level");
3235 if (layer == NULL && level == NULL)
3238 printf("ACPI set debug");
3239 if (layer != NULL) {
3240 if (strcmp("NONE", layer) != 0)
3241 printf(" layer '%s'", layer);
3242 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
3245 if (level != NULL) {
3246 if (strcmp("NONE", level) != 0)
3247 printf(" level '%s'", level);
3248 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
3254 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3258 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
3261 struct debugtag *tag;
3264 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
3266 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
3267 tag = &dbg_layer[0];
3268 dbg = &AcpiDbgLayer;
3270 tag = &dbg_level[0];
3271 dbg = &AcpiDbgLevel;
3274 /* Get old values if this is a get request. */
3275 ACPI_SERIAL_BEGIN(acpi);
3277 sbuf_cpy(&sb, "NONE");
3278 } else if (req->newptr == NULL) {
3279 for (; tag->name != NULL; tag++) {
3280 if ((*dbg & tag->value) == tag->value)
3281 sbuf_printf(&sb, "%s ", tag->name);
3287 /* Copy out the old values to the user. */
3288 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
3291 /* If the user is setting a string, parse it. */
3292 if (error == 0 && req->newptr != NULL) {
3294 setenv((char *)oidp->oid_arg1, (char *)req->newptr);
3295 acpi_set_debugging(NULL);
3297 ACPI_SERIAL_END(acpi);
3302 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
3303 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
3304 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
3305 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3306 #endif /* ACPI_DEBUG */
3309 acpi_pm_func(u_long cmd, void *arg, ...)
3311 int state, acpi_state;
3313 struct acpi_softc *sc;
3318 case POWER_CMD_SUSPEND:
3319 sc = (struct acpi_softc *)arg;
3326 state = va_arg(ap, int);
3330 case POWER_SLEEP_STATE_STANDBY:
3331 acpi_state = sc->acpi_standby_sx;
3333 case POWER_SLEEP_STATE_SUSPEND:
3334 acpi_state = sc->acpi_suspend_sx;
3336 case POWER_SLEEP_STATE_HIBERNATE:
3337 acpi_state = ACPI_STATE_S4;
3344 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
3357 acpi_pm_register(void *arg)
3359 if (!cold || resource_disabled("acpi", 0))
3362 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3365 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);