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
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
29 * $FreeBSD: src/sys/dev/acpica/acpi.c,v 1.243.2.4.4.1 2009/04/15 03:14:26 kensmith Exp $
33 #include <sys/param.h>
34 #include <sys/kernel.h>
36 #include <sys/fcntl.h>
37 #include <sys/malloc.h>
38 #include <sys/module.h>
41 #include <sys/ioccom.h>
42 #include <sys/reboot.h>
43 #include <sys/sysctl.h>
44 #include <sys/ctype.h>
45 #include <sys/linker.h>
46 #include <sys/power.h>
48 #include <sys/device.h>
49 #include <sys/spinlock.h>
50 #include <sys/spinlock2.h>
53 #include <bus/isa/isavar.h>
54 #include <bus/isa/pnpvar.h>
57 #include <dev/acpica5/acpivar.h>
58 #include <dev/acpica5/acpiio.h>
64 #include <bus/pci/pci_cfgreg.h>
65 #include <bus/pci/pcivar.h>
66 #include <bus/pci/pci_private.h>
68 #include <vm/vm_param.h>
70 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
72 #define GIANT_REQUIRED
75 /* Hooks for the ACPI CA debugging infrastructure */
76 #define _COMPONENT ACPI_BUS
77 ACPI_MODULE_NAME("ACPI")
79 static d_open_t acpiopen;
80 static d_close_t acpiclose;
81 static d_ioctl_t acpiioctl;
83 static struct dev_ops acpi_ops = {
90 /* Global mutex for locking access to the ACPI subsystem. */
91 struct lock acpi_lock;
92 /* Bitmap of device quirks. */
95 static int acpi_modevent(struct module *mod, int event, void *junk);
96 static void acpi_identify(driver_t *driver, device_t parent);
97 static int acpi_probe(device_t dev);
98 static int acpi_attach(device_t dev);
99 static int acpi_suspend(device_t dev);
100 static int acpi_resume(device_t dev);
101 static int acpi_shutdown(device_t dev);
102 static device_t acpi_add_child(device_t bus, device_t parent, int order, const char *name,
104 static int acpi_print_child(device_t bus, device_t child);
105 static void acpi_probe_nomatch(device_t bus, device_t child);
106 static void acpi_driver_added(device_t dev, driver_t *driver);
107 static int acpi_read_ivar(device_t dev, device_t child, int index,
109 static int acpi_write_ivar(device_t dev, device_t child, int index,
111 static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
112 static int acpi_sysres_alloc(device_t dev);
113 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
114 int type, int *rid, u_long start, u_long end,
115 u_long count, u_int flags);
116 static int acpi_release_resource(device_t bus, device_t child, int type,
117 int rid, struct resource *r);
118 static void acpi_delete_resource(device_t bus, device_t child, int type,
120 static uint32_t acpi_isa_get_logicalid(device_t dev);
121 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
122 static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
123 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
124 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
126 static int acpi_device_pwr_for_sleep(device_t bus, device_t dev,
128 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
129 void *context, void **retval);
130 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
131 int max_depth, acpi_scan_cb_t user_fn, void *arg);
132 static int acpi_set_powerstate_method(device_t bus, device_t child,
134 static int acpi_isa_pnp_probe(device_t bus, device_t child,
135 struct isa_pnp_id *ids);
136 static void acpi_probe_children(device_t bus);
137 static void acpi_probe_order(ACPI_HANDLE handle, int *order);
138 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
139 void *context, void **status);
140 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
141 static void acpi_shutdown_final(void *arg, int howto);
142 static void acpi_enable_fixed_events(struct acpi_softc *sc);
143 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
144 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
145 static int acpi_wake_prep_walk(int sstate);
146 static int acpi_wake_sysctl_walk(device_t dev);
148 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
150 static void acpi_system_eventhandler_sleep(void *arg, int state);
151 static void acpi_system_eventhandler_wakeup(void *arg, int state);
152 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
153 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
154 static int acpi_pm_func(u_long cmd, void *arg, ...);
155 static int acpi_child_location_str_method(device_t acdev, device_t child,
156 char *buf, size_t buflen);
157 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
158 char *buf, size_t buflen);
159 static void acpi_enable_pcie(void);
161 static device_method_t acpi_methods[] = {
162 /* Device interface */
163 DEVMETHOD(device_identify, acpi_identify),
164 DEVMETHOD(device_probe, acpi_probe),
165 DEVMETHOD(device_attach, acpi_attach),
166 DEVMETHOD(device_shutdown, acpi_shutdown),
167 DEVMETHOD(device_detach, bus_generic_detach),
168 DEVMETHOD(device_suspend, acpi_suspend),
169 DEVMETHOD(device_resume, acpi_resume),
172 DEVMETHOD(bus_add_child, acpi_add_child),
173 DEVMETHOD(bus_print_child, acpi_print_child),
174 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
175 DEVMETHOD(bus_driver_added, acpi_driver_added),
176 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
177 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
178 DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
179 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
180 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
181 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
182 DEVMETHOD(bus_release_resource, acpi_release_resource),
183 DEVMETHOD(bus_delete_resource, acpi_delete_resource),
184 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
185 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
186 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
187 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
188 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
189 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
192 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
193 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
194 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
195 DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
198 DEVMETHOD(pci_set_powerstate, acpi_set_powerstate_method),
201 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
206 static driver_t acpi_driver = {
209 sizeof(struct acpi_softc),
212 static devclass_t acpi_devclass;
213 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
214 MODULE_VERSION(acpi, 1);
216 ACPI_SERIAL_DECL(acpi, "ACPI serializer")
218 /* Local pools for managing system resources for ACPI child devices. */
219 static struct rman acpi_rman_io, acpi_rman_mem;
221 #define ACPI_MINIMUM_AWAKETIME 5
223 static const char* sleep_state_names[] = {
224 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
226 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
227 static char acpi_ca_version[12];
228 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
229 acpi_ca_version, 0, "Version of Intel ACPI-CA");
232 * Allow override of whether methods execute in parallel or not.
233 * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
234 * errors for AML that really can't handle parallel method execution.
235 * It is off by default since this breaks recursive methods and
236 * some IBMs use such code.
238 static int acpi_serialize_methods;
239 TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
241 /* Power devices off and on in suspend and resume. XXX Remove once tested. */
242 static int acpi_do_powerstate = 1;
243 TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate);
244 SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW,
245 &acpi_do_powerstate, 1, "Turn off devices when suspending.");
247 /* Allow users to override quirks. */
248 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
250 static int acpi_susp_bounce;
251 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
252 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
255 * ACPI can only be loaded as a module by the loader; activating it after
256 * system bootstrap time is not useful, and can be fatal to the system.
257 * It also cannot be unloaded, since the entire system bus heirarchy hangs
261 acpi_modevent(struct module *mod, int event, void *junk)
266 kprintf("The ACPI driver cannot be loaded after boot.\n");
271 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
281 * Perform early initialization.
286 static int started = 0;
290 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
292 /* Only run the startup code once. The MADT driver also calls this. */
294 return_VALUE (AE_OK);
298 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
299 * if more tables exist.
301 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
302 kprintf("ACPI: Table initialisation failed: %s\n",
303 AcpiFormatException(status));
304 return_VALUE (status);
307 /* Set up any quirks we have for this system. */
309 if (acpi_quirks == ACPI_Q_OK)
310 acpi_table_quirks(&acpi_quirks);
313 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
314 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
315 acpi_quirks &= ~ACPI_Q_BROKEN;
316 if (acpi_quirks & ACPI_Q_BROKEN) {
317 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
321 return_VALUE (status);
325 * Detect ACPI, perform early initialisation
328 acpi_identify(driver_t *driver, device_t parent)
332 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
337 /* Check that we haven't been disabled with a hint. */
338 if (resource_disabled("acpi", 0))
341 /* Make sure we're not being doubly invoked. */
342 if (device_find_child(parent, "acpi", 0) != NULL)
345 ksnprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
347 /* Initialize root tables. */
348 if (ACPI_FAILURE(acpi_Startup())) {
349 kprintf("ACPI: Try disabling either ACPI or apic support.\n");
353 /* Attach the actual ACPI device. */
354 if ((child = BUS_ADD_CHILD(parent, parent, 10, "acpi", 0)) == NULL) {
355 device_printf(parent, "device_identify failed\n");
361 * Fetch some descriptive data from ACPI to put in our attach message.
364 acpi_probe(device_t dev)
366 ACPI_TABLE_RSDP *rsdp;
367 ACPI_TABLE_HEADER *rsdt;
368 ACPI_PHYSICAL_ADDRESS paddr;
369 char buf[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
372 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
374 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
375 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
376 device_printf(dev, "probe failed, other PM system enabled.\n");
377 return_VALUE (ENXIO);
380 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
381 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
382 return_VALUE (ENXIO);
383 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
384 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
386 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
387 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
389 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
390 return_VALUE (ENXIO);
391 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
392 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
395 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
398 device_set_desc_copy(dev, sbuf_data(&sb));
400 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
406 acpi_attach(device_t dev)
408 struct acpi_softc *sc;
409 ACPI_TABLE_FACS *facs;
416 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
418 sc = device_get_softc(dev);
420 callout_init(&sc->susp_force_to);
422 if ((error = acpi_task_thread_init())) {
423 device_printf(dev, "Could not start task thread.\n");
429 /* Initialize resource manager. */
430 acpi_rman_io.rm_type = RMAN_ARRAY;
431 acpi_rman_io.rm_start = 0;
432 acpi_rman_io.rm_end = 0xffff;
433 acpi_rman_io.rm_descr = "ACPI I/O ports";
434 if (rman_init(&acpi_rman_io) != 0)
435 panic("acpi rman_init IO ports failed");
436 acpi_rman_mem.rm_type = RMAN_ARRAY;
437 acpi_rman_mem.rm_start = 0;
438 acpi_rman_mem.rm_end = ~0ul;
439 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
440 if (rman_init(&acpi_rman_mem) != 0)
441 panic("acpi rman_init memory failed");
443 /* Initialise the ACPI mutex */
444 ACPI_LOCK_INIT(acpi, "acpi");
445 ACPI_SERIAL_INIT(acpi);
448 * Set the globals from our tunables. This is needed because ACPI-CA
449 * uses UINT8 for some values and we have no tunable_byte.
451 AcpiGbl_AllMethodsSerialized = acpi_serialize_methods;
452 AcpiGbl_EnableInterpreterSlack = TRUE;
454 /* Start up the ACPI CA subsystem. */
455 status = AcpiInitializeSubsystem();
456 if (ACPI_FAILURE(status)) {
457 device_printf(dev, "Could not initialize Subsystem: %s\n",
458 AcpiFormatException(status));
462 /* Load ACPI name space. */
463 status = AcpiLoadTables();
464 if (ACPI_FAILURE(status)) {
465 device_printf(dev, "Could not load Namespace: %s\n",
466 AcpiFormatException(status));
470 /* Handle MCFG table if present. */
473 /* Install the default address space handlers. */
474 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
475 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
476 if (ACPI_FAILURE(status)) {
477 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
478 AcpiFormatException(status));
481 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
482 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
483 if (ACPI_FAILURE(status)) {
484 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
485 AcpiFormatException(status));
488 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
489 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
490 if (ACPI_FAILURE(status)) {
491 device_printf(dev, "could not initialise PciConfig handler: %s\n",
492 AcpiFormatException(status));
497 * Note that some systems (specifically, those with namespace evaluation
498 * issues that require the avoidance of parts of the namespace) must
499 * avoid running _INI and _STA on everything, as well as dodging the final
502 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
504 * XXX We should arrange for the object init pass after we have attached
505 * all our child devices, but on many systems it works here.
508 if (ktestenv("debug.acpi.avoid"))
509 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
511 /* Bring the hardware and basic handlers online. */
512 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
513 device_printf(dev, "Could not enable ACPI: %s\n",
514 AcpiFormatException(status));
519 * Call the ECDT probe function to provide EC functionality before
520 * the namespace has been evaluated.
522 * XXX This happens before the sysresource devices have been probed and
523 * attached so its resources come from nexus0. In practice, this isn't
524 * a problem but should be addressed eventually.
526 acpi_ec_ecdt_probe(dev);
528 /* Bring device objects and regions online. */
529 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
530 device_printf(dev, "Could not initialize ACPI objects: %s\n",
531 AcpiFormatException(status));
536 * Setup our sysctl tree.
538 * XXX: This doesn't check to make sure that none of these fail.
540 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
541 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
542 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
543 device_get_name(dev), CTLFLAG_RD, 0, "");
544 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
545 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
546 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
547 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
548 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
549 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
550 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
551 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
552 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
553 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
554 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
555 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
556 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
557 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
558 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
559 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
560 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
561 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
562 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
563 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
565 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
566 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
567 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
568 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
569 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
570 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
571 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
572 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
573 OID_AUTO, "handle_reboot", CTLFLAG_RW,
574 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
577 * Default to 1 second before sleeping to give some machines time to
580 sc->acpi_sleep_delay = 1;
582 sc->acpi_verbose = 1;
583 if ((env = kgetenv("hw.acpi.verbose")) != NULL) {
584 if (strcmp(env, "0") != 0)
585 sc->acpi_verbose = 1;
589 /* Only enable S4BIOS by default if the FACS says it is available. */
590 status = AcpiGetTable(ACPI_SIG_FACS, 0, (ACPI_TABLE_HEADER **)&facs);
591 if (ACPI_FAILURE(status)) {
592 device_printf(dev, "couldn't get FACS: %s\n",
593 AcpiFormatException(status));
597 if (facs->Flags & ACPI_FACS_S4_BIOS_PRESENT)
601 * Dispatch the default sleep state to devices. The lid switch is set
602 * to NONE by default to avoid surprising users.
604 sc->acpi_power_button_sx = ACPI_STATE_S5;
605 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
606 sc->acpi_standby_sx = ACPI_STATE_S1;
607 sc->acpi_suspend_sx = ACPI_STATE_S3;
609 /* Pick the first valid sleep state for the sleep button default. */
610 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
611 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
612 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
613 sc->acpi_sleep_button_sx = state;
617 acpi_enable_fixed_events(sc);
620 * Scan the namespace and attach/initialise children.
623 /* Register our shutdown handler. */
624 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
628 * Register our acpi event handlers.
629 * XXX should be configurable eg. via userland policy manager.
631 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
632 sc, ACPI_EVENT_PRI_LAST);
633 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
634 sc, ACPI_EVENT_PRI_LAST);
636 /* Flag our initial states. */
637 sc->acpi_enabled = 1;
638 sc->acpi_sstate = ACPI_STATE_S0;
639 sc->acpi_sleep_disabled = 0;
640 /* Create the control device */
641 sc->acpi_dev_t = make_dev(&acpi_ops, 0, UID_ROOT, GID_WHEEL, 0644,
643 sc->acpi_dev_t->si_drv1 = sc;
645 if ((error = acpi_machdep_init(dev)))
648 /* Register ACPI again to pass the correct argument of pm_func. */
649 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
651 if (!acpi_disabled("bus"))
652 acpi_probe_children(dev);
654 /* Update all GPEs and enable runtime GPEs. */
655 status = AcpiUpdateAllGpes();
656 if (ACPI_FAILURE(status)) {
657 device_printf(dev, "Could not update all GPEs: %s\n",
658 AcpiFormatException(status));
661 /* Allow sleep request after a while. */
662 /* timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME); */
667 cputimer_intr_pmfixup();
668 return_VALUE (error);
672 acpi_suspend(device_t dev)
674 device_t child, *devlist;
675 int error, i, numdevs, pstate;
679 /* First give child devices a chance to suspend. */
680 error = bus_generic_suspend(dev);
685 * Now, set them into the appropriate power state, usually D3. If the
686 * device has an _SxD method for the next sleep state, use that power
689 device_get_children(dev, &devlist, &numdevs);
690 for (i = 0; i < numdevs; i++) {
691 /* If the device is not attached, we've powered it down elsewhere. */
693 if (!device_is_attached(child))
697 * Default to D3 for all sleep states. The _SxD method is optional
698 * so set the powerstate even if it's absent.
700 pstate = PCI_POWERSTATE_D3;
701 error = acpi_device_pwr_for_sleep(device_get_parent(child),
703 if ((error == 0 || error == ESRCH) && acpi_do_powerstate)
704 pci_set_powerstate(child, pstate);
706 kfree(devlist, M_TEMP);
713 acpi_resume(device_t dev)
717 device_t child, *devlist;
722 * Put all devices in D0 before resuming them. Call _S0D on each one
723 * since some systems expect this.
725 device_get_children(dev, &devlist, &numdevs);
726 for (i = 0; i < numdevs; i++) {
728 handle = acpi_get_handle(child);
730 AcpiEvaluateObject(handle, "_S0D", NULL, NULL);
731 if (device_is_attached(child) && acpi_do_powerstate)
732 pci_set_powerstate(child, PCI_POWERSTATE_D0);
734 kfree(devlist, M_TEMP);
736 return (bus_generic_resume(dev));
740 acpi_shutdown(device_t dev)
745 /* Allow children to shutdown first. */
746 bus_generic_shutdown(dev);
749 * Enable any GPEs that are able to power-on the system (i.e., RTC).
750 * Also, disable any that are not valid for this state (most).
752 acpi_wake_prep_walk(ACPI_STATE_S5);
758 * Handle a new device being added
761 acpi_add_child(device_t bus, device_t parent, int order, const char *name, int unit)
763 struct acpi_device *ad;
766 if ((ad = kmalloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
769 resource_list_init(&ad->ad_rl);
770 child = device_add_child_ordered(parent, order, name, unit);
772 device_set_ivars(child, ad);
774 kfree(ad, M_ACPIDEV);
779 acpi_print_child(device_t bus, device_t child)
781 struct acpi_device *adev = device_get_ivars(child);
782 struct resource_list *rl = &adev->ad_rl;
785 retval += bus_print_child_header(bus, child);
786 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
787 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
788 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
789 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
790 if (device_get_flags(child))
791 retval += kprintf(" flags %#x", device_get_flags(child));
792 retval += bus_print_child_footer(bus, child);
798 * If this device is an ACPI child but no one claimed it, attempt
799 * to power it off. We'll power it back up when a driver is added.
801 * XXX Disabled for now since many necessary devices (like fdc and
802 * ATA) don't claim the devices we created for them but still expect
803 * them to be powered up.
806 acpi_probe_nomatch(device_t bus, device_t child)
809 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
813 * If a new driver has a chance to probe a child, first power it up.
815 * XXX Disabled for now (see acpi_probe_nomatch for details).
818 acpi_driver_added(device_t dev, driver_t *driver)
820 device_t child, *devlist;
823 DEVICE_IDENTIFY(driver, dev);
824 device_get_children(dev, &devlist, &numdevs);
825 for (i = 0; i < numdevs; i++) {
827 if (device_get_state(child) == DS_NOTPRESENT) {
828 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
829 if (device_probe_and_attach(child) != 0)
830 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
833 kfree(devlist, M_TEMP);
836 /* Location hint for devctl(8) */
838 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
841 struct acpi_device *dinfo = device_get_ivars(child);
843 if (dinfo->ad_handle)
844 ksnprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
846 ksnprintf(buf, buflen, "unknown");
850 /* PnP information for devctl(8) */
852 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
855 ACPI_DEVICE_INFO *adinfo;
856 struct acpi_device *dinfo = device_get_ivars(child);
860 error = AcpiGetObjectInfo(dinfo->ad_handle, &adinfo);
862 ksnprintf(buf, buflen, "unknown");
864 ksnprintf(buf, buflen, "_HID=%s _UID=%lu",
865 (adinfo->Valid & ACPI_VALID_HID) ?
866 adinfo->HardwareId.String : "none",
867 (adinfo->Valid & ACPI_VALID_UID) ?
868 strtoul(adinfo->UniqueId.String, &end, 10) : 0);
876 * Handle per-device ivars
879 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
881 struct acpi_device *ad;
883 if ((ad = device_get_ivars(child)) == NULL) {
884 kprintf("device has no ivars\n");
888 /* ACPI and ISA compatibility ivars */
890 case ACPI_IVAR_HANDLE:
891 *(ACPI_HANDLE *)result = ad->ad_handle;
893 case ACPI_IVAR_MAGIC:
894 *(uintptr_t *)result = ad->ad_magic;
896 case ACPI_IVAR_PRIVATE:
897 *(void **)result = ad->ad_private;
899 case ACPI_IVAR_FLAGS:
900 *(int *)result = ad->ad_flags;
902 case ISA_IVAR_VENDORID:
903 case ISA_IVAR_SERIAL:
904 case ISA_IVAR_COMPATID:
907 case ISA_IVAR_LOGICALID:
908 *(int *)result = acpi_isa_get_logicalid(child);
918 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
920 struct acpi_device *ad;
922 if ((ad = device_get_ivars(child)) == NULL) {
923 kprintf("device has no ivars\n");
928 case ACPI_IVAR_HANDLE:
929 ad->ad_handle = (ACPI_HANDLE)value;
931 case ACPI_IVAR_MAGIC:
932 ad->ad_magic = (uintptr_t)value;
934 case ACPI_IVAR_PRIVATE:
935 ad->ad_private = (void *)value;
937 case ACPI_IVAR_FLAGS:
938 ad->ad_flags = (int)value;
941 panic("bad ivar write request (%d)", index);
949 * Handle child resource allocation/removal
951 static struct resource_list *
952 acpi_get_rlist(device_t dev, device_t child)
954 struct acpi_device *ad;
956 ad = device_get_ivars(child);
961 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
962 * duplicates, we merge any in the sysresource attach routine.
965 acpi_sysres_alloc(device_t dev)
967 struct resource *res;
968 struct resource_list *rl;
969 struct resource_list_entry *rle;
971 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
975 * Probe/attach any sysresource devices. This would be unnecessary if we
976 * had multi-pass probe/attach.
978 if (device_get_children(dev, &children, &child_count) != 0)
980 for (i = 0; i < child_count; i++) {
981 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
982 device_probe_and_attach(children[i]);
984 kfree(children, M_TEMP);
986 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
989 SLIST_FOREACH(rle, rl, link) {
990 if (rle->res != NULL) {
991 device_printf(dev, "duplicate resource for %lx\n", rle->start);
995 /* Only memory and IO resources are valid here. */
1000 case SYS_RES_MEMORY:
1001 rm = &acpi_rman_mem;
1007 /* Pre-allocate resource and add to our rman pool. */
1008 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1009 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
1011 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1014 device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1015 rle->start, rle->count, rle->type);
1020 static struct resource *
1021 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
1022 u_long start, u_long end, u_long count, u_int flags)
1025 struct acpi_device *ad = device_get_ivars(child);
1026 struct resource_list *rl = &ad->ad_rl;
1027 struct resource_list_entry *rle;
1028 struct resource *res;
1033 /* We only handle memory and IO resources through rman. */
1035 case SYS_RES_IOPORT:
1038 case SYS_RES_MEMORY:
1039 rm = &acpi_rman_mem;
1045 ACPI_SERIAL_BEGIN(acpi);
1048 * If this is an allocation of the "default" range for a given RID, and
1049 * we know what the resources for this device are (i.e., they're on the
1050 * child's resource list), use those start/end values.
1052 if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) {
1053 rle = resource_list_find(rl, type, *rid);
1062 * If this is an allocation of a specific range, see if we can satisfy
1063 * the request from our system resource regions. If we can't, pass the
1064 * request up to the parent.
1066 if (start + count - 1 == end && rm != NULL)
1067 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1070 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1071 start, end, count, flags);
1073 rman_set_rid(res, *rid);
1075 /* If requested, activate the resource using the parent's method. */
1076 if (flags & RF_ACTIVE)
1077 if (bus_activate_resource(child, type, *rid, res) != 0) {
1078 rman_release_resource(res);
1084 if (res != NULL && device_get_parent(child) == bus)
1088 * Since bus_config_intr() takes immediate effect, we cannot
1089 * configure the interrupt associated with a device when we
1090 * parse the resources but have to defer it until a driver
1091 * actually allocates the interrupt via bus_alloc_resource().
1093 * XXX: Should we handle the lookup failing?
1095 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
1096 acpi_config_intr(child, &ares);
1098 kprintf("irq resource not found\n");
1103 ACPI_SERIAL_END(acpi);
1108 acpi_release_resource(device_t bus, device_t child, int type, int rid,
1114 /* We only handle memory and IO resources through rman. */
1116 case SYS_RES_IOPORT:
1119 case SYS_RES_MEMORY:
1120 rm = &acpi_rman_mem;
1126 ACPI_SERIAL_BEGIN(acpi);
1129 * If this resource belongs to one of our internal managers,
1130 * deactivate it and release it to the local pool. If it doesn't,
1131 * pass this request up to the parent.
1133 if (rm != NULL && rman_is_region_manager(r, rm)) {
1134 if (rman_get_flags(r) & RF_ACTIVE) {
1135 ret = bus_deactivate_resource(child, type, rid, r);
1139 ret = rman_release_resource(r);
1141 ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
1144 ACPI_SERIAL_END(acpi);
1149 acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1151 struct resource_list *rl;
1153 rl = acpi_get_rlist(bus, child);
1154 resource_list_delete(rl, type, rid);
1157 /* Allocate an IO port or memory resource, given its GAS. */
1159 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1160 struct resource **res, u_int flags)
1162 int error, res_type;
1165 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1168 /* We only support memory and IO spaces. */
1169 switch (gas->SpaceId) {
1170 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1171 res_type = SYS_RES_MEMORY;
1173 case ACPI_ADR_SPACE_SYSTEM_IO:
1174 res_type = SYS_RES_IOPORT;
1177 return (EOPNOTSUPP);
1181 * If the register width is less than 8, assume the BIOS author means
1182 * it is a bit field and just allocate a byte.
1184 if (gas->BitWidth && gas->BitWidth < 8)
1187 /* Validate the address after we're sure we support the space. */
1188 if (gas->Address == 0 || gas->BitWidth == 0)
1191 bus_set_resource(dev, res_type, *rid, gas->Address,
1193 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1198 bus_delete_resource(dev, res_type, *rid);
1203 /* Probe _HID and _CID for compatible ISA PNP ids. */
1205 acpi_isa_get_logicalid(device_t dev)
1207 ACPI_DEVICE_INFO *devinfo;
1212 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1216 /* Fetch and validate the HID. */
1217 if ((h = acpi_get_handle(dev)) == NULL)
1219 error = AcpiGetObjectInfo(h, &devinfo);
1220 if (ACPI_FAILURE(error))
1223 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
1224 pnpid = PNP_EISAID(devinfo->HardwareId.String);
1228 AcpiOsFree(devinfo);
1229 return_VALUE (pnpid);
1233 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1235 ACPI_DEVICE_INFO *devinfo;
1241 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1246 /* Fetch and validate the CID */
1247 if ((h = acpi_get_handle(dev)) == NULL)
1249 error = AcpiGetObjectInfo(h, &devinfo);
1250 if (ACPI_FAILURE(error))
1252 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
1255 if (devinfo->CompatibleIdList.Count < count)
1256 count = devinfo->CompatibleIdList.Count;
1257 for (i = 0; i < count; i++) {
1258 if (strncmp(devinfo->CompatibleIdList.Ids[i].String, "PNP", 3) != 0)
1260 *pnpid++ = PNP_EISAID(devinfo->CompatibleIdList.Ids[i].String);
1266 AcpiOsFree(devinfo);
1267 return_VALUE (valid);
1271 acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1276 h = acpi_get_handle(dev);
1277 if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE)
1280 /* Try to match one of the array of IDs with a HID or CID. */
1281 for (i = 0; ids[i] != NULL; i++) {
1282 if (acpi_MatchHid(h, ids[i]))
1289 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1290 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1295 h = ACPI_ROOT_OBJECT;
1296 else if ((h = acpi_get_handle(dev)) == NULL)
1297 return (AE_BAD_PARAMETER);
1298 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1302 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1304 struct acpi_softc *sc;
1310 sc = device_get_softc(bus);
1311 handle = acpi_get_handle(dev);
1314 * XXX If we find these devices, don't try to power them down.
1315 * The serial and IRDA ports on my T23 hang the system when
1316 * set to D3 and it appears that such legacy devices may
1317 * need special handling in their drivers.
1319 if (handle == NULL ||
1320 acpi_MatchHid(handle, "PNP0500") ||
1321 acpi_MatchHid(handle, "PNP0501") ||
1322 acpi_MatchHid(handle, "PNP0502") ||
1323 acpi_MatchHid(handle, "PNP0510") ||
1324 acpi_MatchHid(handle, "PNP0511"))
1328 * Override next state with the value from _SxD, if present. If no
1329 * dstate argument was provided, don't fetch the return value.
1331 ksnprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1333 status = acpi_GetInteger(handle, sxd, dstate);
1335 status = AcpiEvaluateObject(handle, sxd, NULL, NULL);
1352 /* Callback arg for our implementation of walking the namespace. */
1353 struct acpi_device_scan_ctx {
1354 acpi_scan_cb_t user_fn;
1360 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1362 struct acpi_device_scan_ctx *ctx;
1363 device_t dev, old_dev;
1365 ACPI_OBJECT_TYPE type;
1368 * Skip this device if we think we'll have trouble with it or it is
1369 * the parent where the scan began.
1371 ctx = (struct acpi_device_scan_ctx *)arg;
1372 if (acpi_avoid(h) || h == ctx->parent)
1375 /* If this is not a valid device type (e.g., a method), skip it. */
1376 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1378 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1379 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1383 * Call the user function with the current device. If it is unchanged
1384 * afterwards, return. Otherwise, we update the handle to the new dev.
1386 old_dev = acpi_get_device(h);
1388 status = ctx->user_fn(h, &dev, level, ctx->arg);
1389 if (ACPI_FAILURE(status) || old_dev == dev)
1392 /* Remove the old child and its connection to the handle. */
1393 if (old_dev != NULL) {
1394 device_delete_child(device_get_parent(old_dev), old_dev);
1395 AcpiDetachData(h, acpi_fake_objhandler);
1398 /* Recreate the handle association if the user created a device. */
1400 AcpiAttachData(h, acpi_fake_objhandler, dev);
1406 acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1407 acpi_scan_cb_t user_fn, void *arg)
1410 struct acpi_device_scan_ctx ctx;
1412 if (acpi_disabled("children"))
1416 h = ACPI_ROOT_OBJECT;
1417 else if ((h = acpi_get_handle(dev)) == NULL)
1418 return (AE_BAD_PARAMETER);
1419 ctx.user_fn = user_fn;
1422 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth, NULL,
1423 acpi_device_scan_cb, &ctx, NULL));
1427 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1428 * device power states since it's close enough to ACPI.
1431 acpi_set_powerstate_method(device_t bus, device_t child, int state)
1438 h = acpi_get_handle(child);
1439 if (state < ACPI_STATE_D0 || state > ACPI_STATE_D3)
1444 /* Ignore errors if the power methods aren't present. */
1445 status = acpi_pwr_switch_consumer(h, state);
1446 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND
1447 && status != AE_BAD_PARAMETER)
1448 device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n",
1449 state, acpi_name(h), AcpiFormatException(status));
1455 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1457 int result, cid_count, i;
1458 uint32_t lid, cids[8];
1460 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1463 * ISA-style drivers attached to ACPI may persist and
1464 * probe manually if we return ENOENT. We never want
1465 * that to happen, so don't ever return it.
1469 /* Scan the supplied IDs for a match */
1470 lid = acpi_isa_get_logicalid(child);
1471 cid_count = acpi_isa_get_compatid(child, cids, 8);
1472 while (ids && ids->ip_id) {
1473 if (lid == ids->ip_id) {
1477 for (i = 0; i < cid_count; i++) {
1478 if (cids[i] == ids->ip_id) {
1487 if (result == 0 && ids->ip_desc)
1488 device_set_desc(child, ids->ip_desc);
1490 return_VALUE (result);
1494 * Look for a MCFG table. If it is present, use the settings for
1495 * domain (segment) 0 to setup PCI config space access via the memory
1499 acpi_enable_pcie(void)
1501 ACPI_TABLE_HEADER *hdr;
1502 ACPI_MCFG_ALLOCATION *alloc, *end;
1505 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1506 if (ACPI_FAILURE(status))
1509 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1510 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1511 while (alloc < end) {
1512 if (alloc->PciSegment == 0) {
1513 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1514 alloc->EndBusNumber);
1522 * Scan all of the ACPI namespace and attach child devices.
1524 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1525 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1526 * However, in violation of the spec, some systems place their PCI link
1527 * devices in \, so we have to walk the whole namespace. We check the
1528 * type of namespace nodes, so this should be ok.
1531 acpi_probe_children(device_t bus)
1534 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1537 * Scan the namespace and insert placeholders for all the devices that
1538 * we find. We also probe/attach any early devices.
1540 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1541 * we want to create nodes for all devices, not just those that are
1542 * currently present. (This assumes that we don't want to create/remove
1543 * devices as they appear, which might be smarter.)
1545 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1546 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, NULL,
1547 acpi_probe_child, bus, NULL);
1549 /* Pre-allocate resources for our rman from any sysresource devices. */
1550 acpi_sysres_alloc(bus);
1551 /* Create any static children by calling device identify methods. */
1552 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1553 bus_generic_probe(bus);
1555 /* Probe/attach all children, created staticly and from the namespace. */
1556 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1557 bus_generic_attach(bus);
1560 * Some of these children may have attached others as part of their attach
1561 * process (eg. the root PCI bus driver), so rescan.
1563 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1564 bus_generic_attach(bus);
1566 /* Attach wake sysctls. */
1567 acpi_wake_sysctl_walk(bus);
1569 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1574 * Determine the probe order for a given device.
1577 acpi_probe_order(ACPI_HANDLE handle, int *order)
1579 ACPI_OBJECT_TYPE type;
1582 * 1. I/O port and memory system resource holders
1583 * 2. Embedded controllers (to handle early accesses)
1584 * 3. PCI Link Devices
1587 AcpiGetType(handle, &type);
1588 if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
1590 else if (acpi_MatchHid(handle, "PNP0C09"))
1592 else if (acpi_MatchHid(handle, "PNP0C0F"))
1594 else if (type == ACPI_TYPE_PROCESSOR)
1599 * Evaluate a child device and determine whether we might attach a device to
1603 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1605 struct acpi_prw_data prw;
1606 ACPI_OBJECT_TYPE type;
1608 device_t bus, child;
1610 char *handle_str, **search;
1611 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI_", "\\_SB_", NULL};
1613 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1615 if (acpi_disabled("children"))
1616 return_ACPI_STATUS (AE_OK);
1618 /* Skip this device if we think we'll have trouble with it. */
1619 if (acpi_avoid(handle))
1620 return_ACPI_STATUS (AE_OK);
1622 bus = (device_t)context;
1623 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1624 handle_str = acpi_name(handle);
1626 case ACPI_TYPE_DEVICE:
1627 case ACPI_TYPE_PROCESSOR:
1628 case ACPI_TYPE_THERMAL:
1629 case ACPI_TYPE_POWER:
1631 * Since we scan from \, be sure to skip system scope objects.
1632 * At least \_SB and \_TZ are detected as devices (ACPI-CA bug?)
1634 for (search = scopes; *search != NULL; search++) {
1635 if (strcmp(handle_str, *search) == 0)
1638 if (*search != NULL)
1641 if (type == ACPI_TYPE_DEVICE && acpi_parse_prw(handle, &prw) == 0)
1642 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
1645 * Create a placeholder device for this node. Sort the
1646 * placeholder so that the probe/attach passes will run
1647 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1648 * are reserved for special objects (i.e., system
1649 * resources). CPU devices have a very high order to
1650 * ensure they are probed after other devices.
1652 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1653 order = level * 10 + 100;
1654 acpi_probe_order(handle, &order);
1655 child = BUS_ADD_CHILD(bus, bus, order, NULL, -1);
1659 /* Associate the handle with the device_t and vice versa. */
1660 acpi_set_handle(child, handle);
1661 AcpiAttachData(handle, acpi_fake_objhandler, child);
1664 * Check that the device is present. If it's not present,
1665 * leave it disabled (so that we have a device_t attached to
1666 * the handle, but we don't probe it).
1668 * XXX PCI link devices sometimes report "present" but not
1669 * "functional" (i.e. if disabled). Go ahead and probe them
1670 * anyway since we may enable them later.
1672 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1673 /* Never disable PCI link devices. */
1674 if (acpi_MatchHid(handle, "PNP0C0F"))
1677 * Docking stations should remain enabled since the system
1678 * may be undocked at boot.
1680 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1683 device_disable(child);
1688 * Get the device's resource settings and attach them.
1689 * Note that if the device has _PRS but no _CRS, we need
1690 * to decide when it's appropriate to try to configure the
1691 * device. Ignore the return value here; it's OK for the
1692 * device not to have any resources.
1694 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
1699 return_ACPI_STATUS (AE_OK);
1703 * AcpiAttachData() requires an object handler but never uses it. This is a
1704 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1707 acpi_fake_objhandler(ACPI_HANDLE h, void *data)
1712 acpi_shutdown_final(void *arg, int howto)
1714 struct acpi_softc *sc;
1718 * XXX Shutdown code should only run on the BSP (cpuid 0).
1719 * Some chipsets do not power off the system correctly if called from
1723 if ((howto & RB_POWEROFF) != 0) {
1724 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1725 if (ACPI_FAILURE(status)) {
1726 kprintf("AcpiEnterSleepStatePrep failed - %s\n",
1727 AcpiFormatException(status));
1730 kprintf("Powering system off using ACPI\n");
1731 ACPI_DISABLE_IRQS();
1732 status = AcpiEnterSleepState(ACPI_STATE_S5);
1733 if (ACPI_FAILURE(status)) {
1734 kprintf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1737 kprintf("ACPI power-off failed - timeout\n");
1739 } else if ((howto & RB_HALT) == 0 &&
1740 (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) &&
1741 sc->acpi_handle_reboot) {
1742 /* Reboot using the reset register. */
1744 AcpiGbl_FADT.ResetValue, &AcpiGbl_FADT.ResetRegister);
1745 if (ACPI_FAILURE(status)) {
1746 kprintf("ACPI reset failed - %s\n", AcpiFormatException(status));
1749 kprintf("ACPI reset failed - timeout\n");
1751 } else if (sc->acpi_do_disable && panicstr == NULL) {
1753 * Only disable ACPI if the user requested. On some systems, writing
1754 * the disable value to SMI_CMD hangs the system.
1756 kprintf("Shutting down ACPI\n");
1762 acpi_enable_fixed_events(struct acpi_softc *sc)
1764 static int first_time = 1;
1766 /* Enable and clear fixed events and install handlers. */
1767 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
1768 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1769 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1770 acpi_event_power_button_sleep, sc);
1772 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1774 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
1775 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1776 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1777 acpi_event_sleep_button_sleep, sc);
1779 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1786 * Returns true if the device is actually present and should
1787 * be attached to. This requires the present, enabled, UI-visible
1788 * and diagnostics-passed bits to be set.
1791 acpi_DeviceIsPresent(device_t dev)
1793 ACPI_DEVICE_INFO *devinfo;
1799 if ((h = acpi_get_handle(dev)) == NULL)
1801 error = AcpiGetObjectInfo(h, &devinfo);
1802 if (ACPI_FAILURE(error))
1805 /* If no _STA method, must be present */
1806 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1809 /* Return true for 'present' and 'functioning' */
1810 if (ACPI_DEVICE_PRESENT(devinfo->CurrentStatus))
1813 AcpiOsFree(devinfo);
1818 * Returns true if the battery is actually present and inserted.
1821 acpi_BatteryIsPresent(device_t dev)
1823 ACPI_DEVICE_INFO *devinfo;
1829 if ((h = acpi_get_handle(dev)) == NULL)
1831 error = AcpiGetObjectInfo(h, &devinfo);
1832 if (ACPI_FAILURE(error))
1835 /* If no _STA method, must be present */
1836 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1839 /* Return true for 'present', 'battery present', and 'functioning' */
1840 if (ACPI_BATTERY_PRESENT(devinfo->CurrentStatus))
1843 AcpiOsFree(devinfo);
1848 * Match a HID string against a handle
1851 acpi_MatchHid(ACPI_HANDLE h, const char *hid)
1853 ACPI_DEVICE_INFO *devinfo;
1858 if (hid == NULL || h == NULL)
1860 error = AcpiGetObjectInfo(h, &devinfo);
1861 if (ACPI_FAILURE(error))
1864 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
1865 strcmp(hid, devinfo->HardwareId.String) == 0)
1867 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
1868 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
1869 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
1876 AcpiOsFree(devinfo);
1881 * Return the handle of a named object within our scope, ie. that of (parent)
1882 * or one if its parents.
1885 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1890 /* Walk back up the tree to the root */
1892 status = AcpiGetHandle(parent, path, &r);
1893 if (ACPI_SUCCESS(status)) {
1897 /* XXX Return error here? */
1898 if (status != AE_NOT_FOUND)
1900 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1901 return (AE_NOT_FOUND);
1906 /* Find the difference between two PM tick counts. */
1908 acpi_TimerDelta(uint32_t end, uint32_t start)
1913 delta = end - start;
1914 else if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
1915 delta = ((0xFFFFFFFF - start) + end + 1);
1917 delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
1922 * Allocate a buffer with a preset data size.
1925 acpi_AllocBuffer(int size)
1929 if ((buf = kmalloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
1932 buf->Pointer = (void *)(buf + 1);
1937 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
1940 ACPI_OBJECT_LIST args;
1942 arg1.Type = ACPI_TYPE_INTEGER;
1943 arg1.Integer.Value = number;
1945 args.Pointer = &arg1;
1947 return (AcpiEvaluateObject(handle, path, &args, NULL));
1951 * Evaluate a path that should return an integer.
1954 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
1961 handle = ACPI_ROOT_OBJECT;
1964 * Assume that what we've been pointed at is an Integer object, or
1965 * a method that will return an Integer.
1967 buf.Pointer = ¶m;
1968 buf.Length = sizeof(param);
1969 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1970 if (ACPI_SUCCESS(status)) {
1971 if (param.Type == ACPI_TYPE_INTEGER)
1972 *number = param.Integer.Value;
1978 * In some applications, a method that's expected to return an Integer
1979 * may instead return a Buffer (probably to simplify some internal
1980 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1981 * convert it into an Integer as best we can.
1985 if (status == AE_BUFFER_OVERFLOW) {
1986 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
1987 status = AE_NO_MEMORY;
1989 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1990 if (ACPI_SUCCESS(status))
1991 status = acpi_ConvertBufferToInteger(&buf, number);
1992 AcpiOsFree(buf.Pointer);
1999 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2005 p = (ACPI_OBJECT *)bufp->Pointer;
2006 if (p->Type == ACPI_TYPE_INTEGER) {
2007 *number = p->Integer.Value;
2010 if (p->Type != ACPI_TYPE_BUFFER)
2012 if (p->Buffer.Length > sizeof(int))
2013 return (AE_BAD_DATA);
2016 val = p->Buffer.Pointer;
2017 for (i = 0; i < p->Buffer.Length; i++)
2018 *number += val[i] << (i * 8);
2023 * Iterate over the elements of an a package object, calling the supplied
2024 * function for each element.
2026 * XXX possible enhancement might be to abort traversal on error.
2029 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2030 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2035 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2036 return (AE_BAD_PARAMETER);
2038 /* Iterate over components */
2040 comp = pkg->Package.Elements;
2041 for (; i < pkg->Package.Count; i++, comp++)
2048 * Find the (index)th resource object in a set.
2051 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2056 rp = (ACPI_RESOURCE *)buf->Pointer;
2060 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2061 return (AE_BAD_PARAMETER);
2063 /* Check for terminator */
2064 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2065 return (AE_NOT_FOUND);
2066 rp = ACPI_NEXT_RESOURCE(rp);
2075 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2077 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2078 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2079 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2082 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2085 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2090 /* Initialise the buffer if necessary. */
2091 if (buf->Pointer == NULL) {
2092 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2093 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2094 return (AE_NO_MEMORY);
2095 rp = (ACPI_RESOURCE *)buf->Pointer;
2096 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2103 * Scan the current buffer looking for the terminator.
2104 * This will either find the terminator or hit the end
2105 * of the buffer and return an error.
2107 rp = (ACPI_RESOURCE *)buf->Pointer;
2109 /* Range check, don't go outside the buffer */
2110 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2111 return (AE_BAD_PARAMETER);
2112 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2114 rp = ACPI_NEXT_RESOURCE(rp);
2118 * Check the size of the buffer and expand if required.
2121 * size of existing resources before terminator +
2122 * size of new resource and header +
2123 * size of terminator.
2125 * Note that this loop should really only run once, unless
2126 * for some reason we are stuffing a *really* huge resource.
2128 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2129 res->Length + ACPI_RS_SIZE_NO_DATA +
2130 ACPI_RS_SIZE_MIN) >= buf->Length) {
2131 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2132 return (AE_NO_MEMORY);
2133 bcopy(buf->Pointer, newp, buf->Length);
2134 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2135 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
2136 AcpiOsFree(buf->Pointer);
2137 buf->Pointer = newp;
2138 buf->Length += buf->Length;
2141 /* Insert the new resource. */
2142 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2144 /* And add the terminator. */
2145 rp = ACPI_NEXT_RESOURCE(rp);
2146 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2153 * Set interrupt model.
2156 acpi_SetIntrModel(int model)
2159 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2163 * DEPRECATED. This interface has serious deficiencies and will be
2166 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2167 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2170 acpi_SetSleepState(struct acpi_softc *sc, int state)
2176 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2179 return (acpi_EnterSleepState(sc, state));
2183 acpi_sleep_force(void *arg)
2185 struct acpi_softc *sc;
2187 kprintf("acpi: suspend request timed out, forcing sleep now\n");
2189 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2190 kprintf("acpi: force sleep state S%d failed\n", sc->acpi_next_sstate);
2194 * Request that the system enter the given suspend state. All /dev/apm
2195 * devices and devd(8) will be notified. Userland then has a chance to
2196 * save state and acknowledge the request. The system sleeps once all
2200 acpi_ReqSleepState(struct acpi_softc *sc, int state)
2203 struct apm_clone_data *clone;
2206 if (state < ACPI_STATE_S1 || state > ACPI_STATE_S5)
2209 /* S5 (soft-off) should be entered directly with no waiting. */
2210 if (state == ACPI_STATE_S5) {
2211 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, state)))
2217 #if !defined(__i386__)
2218 /* This platform does not support acpi suspend/resume. */
2219 return (EOPNOTSUPP);
2222 /* If a suspend request is already in progress, just return. */
2224 if (sc->acpi_next_sstate != 0) {
2229 /* Record the pending state and notify all apm devices. */
2230 sc->acpi_next_sstate = state;
2232 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2233 clone->notify_status = APM_EV_NONE;
2234 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
2235 KNOTE(&clone->sel_read.si_note, 0);
2240 /* If devd(8) is not running, immediately enter the sleep state. */
2241 if (devctl_process_running() == FALSE) {
2243 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) {
2250 /* Now notify devd(8) also. */
2251 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2254 * Set a timeout to fire if userland doesn't ack the suspend request
2255 * in time. This way we still eventually go to sleep if we were
2256 * overheating or running low on battery, even if userland is hung.
2257 * We cancel this timeout once all userland acks are in or the
2258 * suspend request is aborted.
2260 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2266 * Acknowledge (or reject) a pending sleep state. The caller has
2267 * prepared for suspend and is now ready for it to proceed. If the
2268 * error argument is non-zero, it indicates suspend should be cancelled
2269 * and gives an errno value describing why. Once all votes are in,
2270 * we suspend the system.
2273 acpi_AckSleepState(struct apm_clone_data *clone, int error)
2275 struct acpi_softc *sc;
2278 #if !defined(__i386__)
2279 /* This platform does not support acpi suspend/resume. */
2280 return (EOPNOTSUPP);
2283 /* If no pending sleep state, return an error. */
2285 sc = clone->acpi_sc;
2286 if (sc->acpi_next_sstate == 0) {
2291 /* Caller wants to abort suspend process. */
2293 sc->acpi_next_sstate = 0;
2294 callout_stop(&sc->susp_force_to);
2295 kprintf("acpi: listener on %s cancelled the pending suspend\n",
2296 devtoname(clone->cdev));
2302 * Mark this device as acking the suspend request. Then, walk through
2303 * all devices, seeing if they agree yet. We only count devices that
2304 * are writable since read-only devices couldn't ack the request.
2306 clone->notify_status = APM_EV_ACKED;
2308 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2309 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2310 clone->notify_status != APM_EV_ACKED) {
2316 /* If all devices have voted "yes", we will suspend now. */
2318 callout_stop(&sc->susp_force_to);
2322 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2330 acpi_sleep_enable(void *arg)
2332 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
2335 enum acpi_sleep_state {
2338 ACPI_SS_DEV_SUSPEND,
2344 * Enter the desired system sleep state.
2346 * Currently we support S1-S5 but S4 is only S4BIOS
2349 acpi_EnterSleepState(struct acpi_softc *sc, int state)
2354 enum acpi_sleep_state slp_state;
2356 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2358 /* Re-entry once we're suspending is not allowed. */
2361 if (sc->acpi_sleep_disabled) {
2363 kprintf("acpi: suspend request ignored (not ready yet)\n");
2366 sc->acpi_sleep_disabled = 1;
2370 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2371 * drivers need this.
2374 slp_state = ACPI_SS_NONE;
2380 status = AcpiGetSleepTypeData(state, &TypeA, &TypeB);
2381 if (status == AE_NOT_FOUND) {
2382 device_printf(sc->acpi_dev,
2383 "Sleep state S%d not supported by BIOS\n", state);
2385 } else if (ACPI_FAILURE(status)) {
2386 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
2387 AcpiFormatException(status));
2391 sc->acpi_sstate = state;
2393 /* Enable any GPEs as appropriate and requested by the user. */
2394 acpi_wake_prep_walk(state);
2395 slp_state = ACPI_SS_GPE_SET;
2398 * Inform all devices that we are going to sleep. If at least one
2399 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2401 * XXX Note that a better two-pass approach with a 'veto' pass
2402 * followed by a "real thing" pass would be better, but the current
2403 * bus interface does not provide for this.
2405 if (DEVICE_SUSPEND(root_bus) != 0) {
2406 device_printf(sc->acpi_dev, "device_suspend failed\n");
2409 slp_state = ACPI_SS_DEV_SUSPEND;
2411 /* If testing device suspend only, back out of everything here. */
2412 if (acpi_susp_bounce)
2415 status = AcpiEnterSleepStatePrep(state);
2416 if (ACPI_FAILURE(status)) {
2417 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2418 AcpiFormatException(status));
2421 slp_state = ACPI_SS_SLP_PREP;
2423 if (sc->acpi_sleep_delay > 0)
2424 DELAY(sc->acpi_sleep_delay * 1000000);
2426 if (state != ACPI_STATE_S1) {
2427 acpi_sleep_machdep(sc, state);
2429 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2430 if (state == ACPI_STATE_S4)
2433 ACPI_DISABLE_IRQS();
2434 status = AcpiEnterSleepState(state);
2435 if (ACPI_FAILURE(status)) {
2436 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2437 AcpiFormatException(status));
2441 slp_state = ACPI_SS_SLEPT;
2445 * Shut down cleanly and power off. This will call us back through the
2446 * shutdown handlers.
2448 shutdown_nice(RB_POWEROFF);
2452 status = AE_BAD_PARAMETER;
2457 * Back out state according to how far along we got in the suspend
2458 * process. This handles both the error and success cases.
2460 sc->acpi_next_sstate = 0;
2461 if (slp_state >= ACPI_SS_GPE_SET) {
2462 acpi_wake_prep_walk(state);
2463 sc->acpi_sstate = ACPI_STATE_S0;
2465 if (slp_state >= ACPI_SS_SLP_PREP)
2466 AcpiLeaveSleepState(state);
2467 if (slp_state >= ACPI_SS_DEV_SUSPEND)
2468 DEVICE_RESUME(root_bus);
2469 if (slp_state >= ACPI_SS_SLEPT)
2470 acpi_enable_fixed_events(sc);
2472 /* Allow another sleep request after a while. */
2473 /* XXX: needs timeout */
2474 if (state != ACPI_STATE_S5)
2475 acpi_sleep_enable(sc);
2477 /* Run /etc/rc.resume after we are back. */
2478 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2481 return_ACPI_STATUS (status);
2484 /* Enable or disable the device's GPE. */
2486 acpi_wake_set_enable(device_t dev, int enable)
2488 struct acpi_prw_data prw;
2492 /* Make sure the device supports waking the system and get the GPE. */
2493 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2496 flags = acpi_get_flags(dev);
2498 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
2500 if (ACPI_FAILURE(status)) {
2501 device_printf(dev, "enable wake failed\n");
2504 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2506 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
2508 if (ACPI_FAILURE(status)) {
2509 device_printf(dev, "disable wake failed\n");
2512 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2519 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
2521 struct acpi_prw_data prw;
2524 /* Check that this is a wake-capable device and get its GPE. */
2525 if (acpi_parse_prw(handle, &prw) != 0)
2527 dev = acpi_get_device(handle);
2530 * The destination sleep state must be less than (i.e., higher power)
2531 * or equal to the value specified by _PRW. If this GPE cannot be
2532 * enabled for the next sleep state, then disable it. If it can and
2533 * the user requested it be enabled, turn on any required power resources
2536 if (sstate > prw.lowest_wake) {
2537 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
2539 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2540 acpi_name(handle), sstate);
2541 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2542 acpi_pwr_wake_enable(handle, 1);
2543 acpi_SetInteger(handle, "_PSW", 1);
2545 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2546 acpi_name(handle), sstate);
2553 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
2555 struct acpi_prw_data prw;
2559 * Check that this is a wake-capable device and get its GPE. Return
2560 * now if the user didn't enable this device for wake.
2562 if (acpi_parse_prw(handle, &prw) != 0)
2564 dev = acpi_get_device(handle);
2565 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2569 * If this GPE couldn't be enabled for the previous sleep state, it was
2570 * disabled before going to sleep so re-enable it. If it was enabled,
2571 * clear _PSW and turn off any power resources it used.
2573 if (sstate > prw.lowest_wake) {
2574 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
2576 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2578 acpi_SetInteger(handle, "_PSW", 0);
2579 acpi_pwr_wake_enable(handle, 0);
2581 device_printf(dev, "run_prep cleaned up for %s\n",
2589 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
2593 /* If suspending, run the sleep prep function, otherwise wake. */
2594 sstate = *(int *)context;
2595 if (AcpiGbl_SystemAwakeAndRunning)
2596 acpi_wake_sleep_prep(handle, sstate);
2598 acpi_wake_run_prep(handle, sstate);
2602 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2604 acpi_wake_prep_walk(int sstate)
2606 ACPI_HANDLE sb_handle;
2608 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) {
2609 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100, NULL,
2610 acpi_wake_prep, &sstate, NULL);
2615 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2617 acpi_wake_sysctl_walk(device_t dev)
2620 int error, i, numdevs;
2625 error = device_get_children(dev, &devlist, &numdevs);
2626 if (error != 0 || numdevs == 0) {
2628 kfree(devlist, M_TEMP);
2631 for (i = 0; i < numdevs; i++) {
2633 acpi_wake_sysctl_walk(child);
2634 if (!device_is_attached(child))
2636 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
2637 if (ACPI_SUCCESS(status)) {
2638 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
2639 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
2640 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
2641 acpi_wake_set_sysctl, "I", "Device set to wake the system");
2644 kfree(devlist, M_TEMP);
2651 /* Enable or disable wake from userland. */
2653 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2658 dev = (device_t)arg1;
2659 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
2661 error = sysctl_handle_int(oidp, &enable, 0, req);
2662 if (error != 0 || req->newptr == NULL)
2664 if (enable != 0 && enable != 1)
2667 return (acpi_wake_set_enable(dev, enable));
2671 /* Parse a device's _PRW into a structure. */
2673 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2676 ACPI_BUFFER prw_buffer;
2677 ACPI_OBJECT *res, *res2;
2678 int error, i, power_count;
2680 if (h == NULL || prw == NULL)
2684 * The _PRW object (7.2.9) is only required for devices that have the
2685 * ability to wake the system from a sleeping state.
2688 prw_buffer.Pointer = NULL;
2689 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2690 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2691 if (ACPI_FAILURE(status))
2693 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2696 if (!ACPI_PKG_VALID(res, 2))
2700 * Element 1 of the _PRW object:
2701 * The lowest power system sleeping state that can be entered while still
2702 * providing wake functionality. The sleeping state being entered must
2703 * be less than (i.e., higher power) or equal to this value.
2705 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2709 * Element 0 of the _PRW object:
2711 switch (res->Package.Elements[0].Type) {
2712 case ACPI_TYPE_INTEGER:
2714 * If the data type of this package element is numeric, then this
2715 * _PRW package element is the bit index in the GPEx_EN, in the
2716 * GPE blocks described in the FADT, of the enable bit that is
2717 * enabled for the wake event.
2719 prw->gpe_handle = NULL;
2720 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2723 case ACPI_TYPE_PACKAGE:
2725 * If the data type of this package element is a package, then this
2726 * _PRW package element is itself a package containing two
2727 * elements. The first is an object reference to the GPE Block
2728 * device that contains the GPE that will be triggered by the wake
2729 * event. The second element is numeric and it contains the bit
2730 * index in the GPEx_EN, in the GPE Block referenced by the
2731 * first element in the package, of the enable bit that is enabled for
2734 * For example, if this field is a package then it is of the form:
2735 * Package() {\_SB.PCI0.ISA.GPE, 2}
2737 res2 = &res->Package.Elements[0];
2738 if (!ACPI_PKG_VALID(res2, 2))
2740 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2741 if (prw->gpe_handle == NULL)
2743 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2751 /* Elements 2 to N of the _PRW object are power resources. */
2752 power_count = res->Package.Count - 2;
2753 if (power_count > ACPI_PRW_MAX_POWERRES) {
2754 kprintf("ACPI device %s has too many power resources\n", acpi_name(h));
2757 prw->power_res_count = power_count;
2758 for (i = 0; i < power_count; i++)
2759 prw->power_res[i] = res->Package.Elements[i];
2762 if (prw_buffer.Pointer != NULL)
2763 AcpiOsFree(prw_buffer.Pointer);
2768 * ACPI Event Handlers
2771 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2774 acpi_system_eventhandler_sleep(void *arg, int state)
2778 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2780 /* Check if button action is disabled. */
2781 if (state == ACPI_S_STATES_MAX + 1)
2784 /* Request that the system prepare to enter the given suspend state. */
2785 ret = acpi_ReqSleepState((struct acpi_softc *)arg, state);
2787 kprintf("acpi: request to enter state S%d failed (err %d)\n",
2794 acpi_system_eventhandler_wakeup(void *arg, int state)
2797 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2799 /* Currently, nothing to do for wakeup. */
2805 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2808 acpi_event_power_button_sleep(void *context)
2810 struct acpi_softc *sc = (struct acpi_softc *)context;
2812 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2814 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2816 return_VALUE (ACPI_INTERRUPT_HANDLED);
2820 acpi_event_power_button_wake(void *context)
2822 struct acpi_softc *sc = (struct acpi_softc *)context;
2824 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2826 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2828 return_VALUE (ACPI_INTERRUPT_HANDLED);
2832 acpi_event_sleep_button_sleep(void *context)
2834 struct acpi_softc *sc = (struct acpi_softc *)context;
2836 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2838 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2840 return_VALUE (ACPI_INTERRUPT_HANDLED);
2844 acpi_event_sleep_button_wake(void *context)
2846 struct acpi_softc *sc = (struct acpi_softc *)context;
2848 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2850 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2852 return_VALUE (ACPI_INTERRUPT_HANDLED);
2856 * XXX This static buffer is suboptimal. There is no locking so only
2857 * use this for single-threaded callers.
2860 acpi_name(ACPI_HANDLE handle)
2863 static char data[256];
2865 buf.Length = sizeof(data);
2868 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
2870 return ("(unknown)");
2874 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2875 * parts of the namespace.
2878 acpi_avoid(ACPI_HANDLE handle)
2880 char *cp, *env, *np;
2883 np = acpi_name(handle);
2886 if ((env = kgetenv("debug.acpi.avoid")) == NULL)
2889 /* Scan the avoid list checking for a match */
2892 while (*cp != 0 && isspace(*cp))
2897 while (cp[len] != 0 && !isspace(cp[len]))
2899 if (!strncmp(cp, np, len)) {
2911 * Debugging/bug-avoidance. Disable ACPI subsystem components.
2914 acpi_disabled(char *subsys)
2919 if ((env = kgetenv("debug.acpi.disabled")) == NULL)
2921 if (strcmp(env, "all") == 0) {
2926 /* Scan the disable list, checking for a match. */
2929 while (*cp != '\0' && isspace(*cp))
2934 while (cp[len] != '\0' && !isspace(cp[len]))
2936 if (strncmp(cp, subsys, len) == 0) {
2948 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
2949 * components are enabled by default. The ones that are not have to be
2950 * enabled via debug.acpi.enabled.
2953 acpi_enabled(char *subsys)
2958 if ((env = kgetenv("debug.acpi.enabled")) == NULL)
2960 if (strcmp(env, "all") == 0) {
2965 /* Scan the enable list, checking for a match. */
2968 while (*cp != '\0' && isspace(*cp))
2973 while (cp[len] != '\0' && !isspace(cp[len]))
2975 if (strncmp(cp, subsys, len) == 0) {
2987 * Control interface.
2989 * We multiplex ioctls for all participating ACPI devices here. Individual
2990 * drivers wanting to be accessible via /dev/acpi should use the
2991 * register/deregister interface to make their handlers visible.
2993 struct acpi_ioctl_hook
2995 TAILQ_ENTRY(acpi_ioctl_hook) link;
3001 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
3002 static int acpi_ioctl_hooks_initted;
3005 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
3007 struct acpi_ioctl_hook *hp;
3009 if ((hp = kmalloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
3016 if (acpi_ioctl_hooks_initted == 0) {
3017 TAILQ_INIT(&acpi_ioctl_hooks);
3018 acpi_ioctl_hooks_initted = 1;
3020 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
3027 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
3029 struct acpi_ioctl_hook *hp;
3032 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
3033 if (hp->cmd == cmd && hp->fn == fn)
3037 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
3038 kfree(hp, M_ACPIDEV);
3044 acpiopen(struct dev_open_args *ap)
3050 acpiclose(struct dev_close_args *ap)
3056 acpiioctl(struct dev_ioctl_args *ap)
3058 struct acpi_softc *sc;
3059 struct acpi_ioctl_hook *hp;
3064 sc = ap->a_head.a_dev->si_drv1;
3067 * Scan the list of registered ioctls, looking for handlers.
3070 if (acpi_ioctl_hooks_initted)
3071 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3072 if (hp->cmd == ap->a_cmd)
3077 return (hp->fn(ap->a_cmd, ap->a_data, hp->arg));
3080 * Core ioctls are not permitted for non-writable user.
3081 * Currently, other ioctls just fetch information.
3082 * Not changing system behavior.
3084 if ((ap->a_fflag & FWRITE) == 0)
3087 /* Core system ioctls. */
3088 switch (ap->a_cmd) {
3089 case ACPIIO_REQSLPSTATE:
3090 state = *(int *)ap->a_data;
3091 if (state != ACPI_STATE_S5)
3092 error = acpi_ReqSleepState(sc, state);
3094 kprintf("power off via acpi ioctl not supported\n");
3098 case ACPIIO_ACKSLPSTATE:
3101 error = *(int *)ap->a_data;
3102 error = acpi_AckSleepState(sc->acpi_clone, error);
3105 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3107 state = *(int *)ap->a_data;
3108 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
3109 if (ACPI_SUCCESS(acpi_SetSleepState(sc, state)))
3120 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3124 UINT8 state, TypeA, TypeB;
3126 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3127 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++)
3128 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
3129 sbuf_printf(&sb, "S%d ", state);
3132 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3138 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3140 char sleep_state[10];
3142 u_int new_state, old_state;
3144 old_state = *(u_int *)oidp->oid_arg1;
3145 if (old_state > ACPI_S_STATES_MAX + 1)
3146 strlcpy(sleep_state, "unknown", sizeof(sleep_state));
3148 strlcpy(sleep_state, sleep_state_names[old_state], sizeof(sleep_state));
3149 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3150 if (error == 0 && req->newptr != NULL) {
3151 new_state = ACPI_STATE_S0;
3152 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++)
3153 if (strcmp(sleep_state, sleep_state_names[new_state]) == 0)
3155 if (new_state <= ACPI_S_STATES_MAX + 1) {
3156 if (new_state != old_state)
3157 *(u_int *)oidp->oid_arg1 = new_state;
3165 /* Inform devctl(4) when we receive a Notify. */
3167 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3169 char notify_buf[16];
3170 ACPI_BUFFER handle_buf;
3173 if (subsystem == NULL)
3176 handle_buf.Pointer = NULL;
3177 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3178 status = AcpiNsHandleToPathname(h, &handle_buf);
3179 if (ACPI_FAILURE(status))
3181 ksnprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
3182 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
3183 AcpiOsFree(handle_buf.Pointer);
3188 * Support for parsing debug options from the kernel environment.
3190 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3191 * by specifying the names of the bits in the debug.acpi.layer and
3192 * debug.acpi.level environment variables. Bits may be unset by
3193 * prefixing the bit name with !.
3201 static struct debugtag dbg_layer[] = {
3202 {"ACPI_UTILITIES", ACPI_UTILITIES},
3203 {"ACPI_HARDWARE", ACPI_HARDWARE},
3204 {"ACPI_EVENTS", ACPI_EVENTS},
3205 {"ACPI_TABLES", ACPI_TABLES},
3206 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3207 {"ACPI_PARSER", ACPI_PARSER},
3208 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3209 {"ACPI_EXECUTER", ACPI_EXECUTER},
3210 {"ACPI_RESOURCES", ACPI_RESOURCES},
3211 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3212 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3213 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3214 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3216 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3217 {"ACPI_BATTERY", ACPI_BATTERY},
3218 {"ACPI_BUS", ACPI_BUS},
3219 {"ACPI_BUTTON", ACPI_BUTTON},
3220 {"ACPI_EC", ACPI_EC},
3221 {"ACPI_FAN", ACPI_FAN},
3222 {"ACPI_POWERRES", ACPI_POWERRES},
3223 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3224 {"ACPI_THERMAL", ACPI_THERMAL},
3225 {"ACPI_TIMER", ACPI_TIMER},
3226 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3230 static struct debugtag dbg_level[] = {
3231 {"ACPI_LV_INIT", ACPI_LV_INIT},
3232 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3233 {"ACPI_LV_INFO", ACPI_LV_INFO},
3234 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3236 /* Trace verbosity level 1 [Standard Trace Level] */
3237 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3238 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3239 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3240 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3241 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3242 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3243 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3244 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3245 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3246 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3247 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3248 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3249 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3250 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3251 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3253 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3254 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3255 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3256 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3257 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3258 {"ACPI_LV_ALL", ACPI_LV_ALL},
3260 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3261 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3262 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3263 {"ACPI_LV_IO", ACPI_LV_IO},
3264 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3265 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3267 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3268 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
3269 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
3270 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
3271 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
3272 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
3277 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
3289 while (*ep && !isspace(*ep))
3300 for (i = 0; tag[i].name != NULL; i++) {
3301 if (!strncmp(cp, tag[i].name, l)) {
3303 *flag |= tag[i].value;
3305 *flag &= ~tag[i].value;
3313 acpi_set_debugging(void *junk)
3315 char *layer, *level;
3322 layer = kgetenv("debug.acpi.layer");
3323 level = kgetenv("debug.acpi.level");
3324 if (layer == NULL && level == NULL)
3327 kprintf("ACPI set debug");
3328 if (layer != NULL) {
3329 if (strcmp("NONE", layer) != 0)
3330 kprintf(" layer '%s'", layer);
3331 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
3334 if (level != NULL) {
3335 if (strcmp("NONE", level) != 0)
3336 kprintf(" level '%s'", level);
3337 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
3343 SYSINIT(acpi_debugging, SI_BOOT1_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3347 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
3350 struct debugtag *tag;
3353 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
3355 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
3356 tag = &dbg_layer[0];
3357 dbg = &AcpiDbgLayer;
3359 tag = &dbg_level[0];
3360 dbg = &AcpiDbgLevel;
3363 /* Get old values if this is a get request. */
3364 ACPI_SERIAL_BEGIN(acpi);
3366 sbuf_cpy(&sb, "NONE");
3367 } else if (req->newptr == NULL) {
3368 for (; tag->name != NULL; tag++) {
3369 if ((*dbg & tag->value) == tag->value)
3370 sbuf_printf(&sb, "%s ", tag->name);
3376 /* Copy out the old values to the user. */
3377 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
3380 /* If the user is setting a string, parse it. */
3381 if (error == 0 && req->newptr != NULL) {
3383 ksetenv((char *)oidp->oid_arg1, (char *)req->newptr);
3384 acpi_set_debugging(NULL);
3386 ACPI_SERIAL_END(acpi);
3391 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
3392 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
3393 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
3394 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3395 #endif /* ACPI_DEBUG */
3398 acpi_pm_func(u_long cmd, void *arg, ...)
3400 int state, acpi_state;
3402 struct acpi_softc *sc;
3407 case POWER_CMD_SUSPEND:
3408 sc = (struct acpi_softc *)arg;
3415 state = va_arg(ap, int);
3419 case POWER_SLEEP_STATE_STANDBY:
3420 acpi_state = sc->acpi_standby_sx;
3422 case POWER_SLEEP_STATE_SUSPEND:
3423 acpi_state = sc->acpi_suspend_sx;
3425 case POWER_SLEEP_STATE_HIBERNATE:
3426 acpi_state = ACPI_STATE_S4;
3433 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
3446 acpi_pm_register(void *arg)
3448 if (!cold || resource_disabled("acpi", 0))
3451 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3454 SYSINIT(power, SI_BOOT2_KLD, SI_ORDER_ANY, acpi_pm_register, 0);