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/reboot.h>
42 #include <sys/sysctl.h>
43 #include <sys/ctype.h>
44 #include <sys/linker.h>
45 #include <sys/power.h>
47 #include <sys/device.h>
48 #include <sys/spinlock.h>
49 #include <sys/spinlock2.h>
52 #include <bus/isa/isavar.h>
53 #include <bus/isa/pnpvar.h>
56 #include <dev/acpica/acpivar.h>
57 #include <dev/acpica/acpiio.h>
63 #include <bus/pci/pci_cfgreg.h>
64 #include <bus/pci/pcivar.h>
65 #include <bus/pci/pci_private.h>
67 #include <vm/vm_param.h>
69 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
71 #define GIANT_REQUIRED
74 /* Hooks for the ACPI CA debugging infrastructure */
75 #define _COMPONENT ACPI_BUS
76 ACPI_MODULE_NAME("ACPI")
78 static d_open_t acpiopen;
79 static d_close_t acpiclose;
80 static d_ioctl_t acpiioctl;
82 static struct dev_ops acpi_ops = {
89 /* Global mutex for locking access to the ACPI subsystem. */
90 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, int cpuid);
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, NULL);
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 ACPICA");
232 * Use this tunable to disable the control method auto-serialization
233 * mechanism that was added in 20140214 and superseded the previous
234 * AcpiGbl_SerializeAllMethods global.
236 static int acpi_auto_serialize_methods = 1;
237 TUNABLE_INT("hw.acpi.auto_serialize_methods", &acpi_auto_serialize_methods);
239 /* Power devices off and on in suspend and resume. XXX Remove once tested. */
240 static int acpi_do_powerstate = 1;
241 TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate);
242 SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW,
243 &acpi_do_powerstate, 1, "Turn off devices when suspending.");
245 /* Allow users to override quirks. */
246 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
248 static int acpi_susp_bounce;
249 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
250 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
253 * ACPI can only be loaded as a module by the loader; activating it after
254 * system bootstrap time is not useful, and can be fatal to the system.
255 * It also cannot be unloaded, since the entire system bus heirarchy hangs
259 acpi_modevent(struct module *mod, int event, void *junk)
264 kprintf("The ACPI driver cannot be loaded after boot.\n");
269 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
279 * Perform early initialization.
284 static int started = 0;
288 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
290 /* Only run the startup code once. The MADT driver also calls this. */
292 return_VALUE (AE_OK);
296 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
297 * if more tables exist.
299 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
300 kprintf("ACPI: Table initialisation failed: %s\n",
301 AcpiFormatException(status));
302 return_VALUE (status);
305 /* Set up any quirks we have for this system. */
306 if (acpi_quirks == ACPI_Q_OK)
307 acpi_table_quirks(&acpi_quirks);
309 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
310 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
311 acpi_quirks &= ~ACPI_Q_BROKEN;
312 if (acpi_quirks & ACPI_Q_BROKEN) {
313 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
317 return_VALUE (status);
321 * Detect ACPI, perform early initialisation
324 acpi_identify(driver_t *driver, device_t parent)
328 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
333 /* Check that we haven't been disabled with a hint. */
334 if (resource_disabled("acpi", 0))
337 /* Make sure we're not being doubly invoked. */
338 if (device_find_child(parent, "acpi", 0) != NULL)
341 ksnprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
343 /* Initialize root tables. */
344 if (ACPI_FAILURE(acpi_Startup())) {
345 kprintf("ACPI: Try disabling either ACPI or apic support.\n");
349 /* Attach the actual ACPI device. */
350 if ((child = BUS_ADD_CHILD(parent, parent, 10, "acpi", 0)) == NULL) {
351 device_printf(parent, "device_identify failed\n");
357 * Fetch some descriptive data from ACPI to put in our attach message.
360 acpi_probe(device_t dev)
362 ACPI_TABLE_RSDP *rsdp;
363 ACPI_TABLE_HEADER *rsdt;
364 ACPI_PHYSICAL_ADDRESS paddr;
365 char buf[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
368 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
370 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
371 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
372 device_printf(dev, "probe failed, other PM system enabled.\n");
373 return_VALUE (ENXIO);
376 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
377 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
378 return_VALUE (ENXIO);
379 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
380 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
382 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
383 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
385 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
386 return_VALUE (ENXIO);
387 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
388 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
391 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
394 device_set_desc_copy(dev, sbuf_data(&sb));
396 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
402 acpi_attach(device_t dev)
404 struct acpi_softc *sc;
411 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
413 sc = device_get_softc(dev);
415 callout_init(&sc->susp_force_to);
417 if ((error = acpi_task_thread_init())) {
418 device_printf(dev, "Could not start task thread.\n");
424 /* Initialize resource manager. */
425 acpi_rman_io.rm_type = RMAN_ARRAY;
426 acpi_rman_io.rm_start = 0;
427 acpi_rman_io.rm_end = 0xffff;
428 acpi_rman_io.rm_descr = "ACPI I/O ports";
429 if (rman_init(&acpi_rman_io, -1) != 0)
430 panic("acpi rman_init IO ports failed");
431 acpi_rman_mem.rm_type = RMAN_ARRAY;
432 acpi_rman_mem.rm_start = 0;
433 acpi_rman_mem.rm_end = ~0ul;
434 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
435 if (rman_init(&acpi_rman_mem, -1) != 0)
436 panic("acpi rman_init memory failed");
438 /* Initialise the ACPI mutex */
439 ACPI_LOCK_INIT(acpi, "acpi");
440 ACPI_SERIAL_INIT(acpi);
443 * Set the globals from our tunables. This is needed because ACPI-CA
444 * uses UINT8 for some values and we have no tunable_byte.
446 AcpiGbl_AutoSerializeMethods = acpi_auto_serialize_methods;
447 AcpiGbl_EnableInterpreterSlack = TRUE;
449 /* Start up the ACPI CA subsystem. */
450 status = AcpiInitializeSubsystem();
451 if (ACPI_FAILURE(status)) {
452 device_printf(dev, "Could not initialize Subsystem: %s\n",
453 AcpiFormatException(status));
457 /* Load ACPI name space. */
458 status = AcpiLoadTables();
459 if (ACPI_FAILURE(status)) {
460 device_printf(dev, "Could not load Namespace: %s\n",
461 AcpiFormatException(status));
465 /* Handle MCFG table if present. */
468 /* Install the default address space handlers. */
469 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
470 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
471 if (ACPI_FAILURE(status)) {
472 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
473 AcpiFormatException(status));
476 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
477 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
478 if (ACPI_FAILURE(status)) {
479 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
480 AcpiFormatException(status));
483 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
484 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
485 if (ACPI_FAILURE(status)) {
486 device_printf(dev, "could not initialise PciConfig handler: %s\n",
487 AcpiFormatException(status));
492 * Note that some systems (specifically, those with namespace evaluation
493 * issues that require the avoidance of parts of the namespace) must
494 * avoid running _INI and _STA on everything, as well as dodging the final
497 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
499 * XXX We should arrange for the object init pass after we have attached
500 * all our child devices, but on many systems it works here.
503 if (ktestenv("debug.acpi.avoid"))
504 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
506 /* Bring the hardware and basic handlers online. */
507 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
508 device_printf(dev, "Could not enable ACPI: %s\n",
509 AcpiFormatException(status));
514 * Fix up the interrupt timer after enabling ACPI, so that the
515 * interrupt cputimer that choked by ACPI power management could
516 * be resurrected before probing various devices.
519 cputimer_intr_pmfixup();
522 * Call the ECDT probe function to provide EC functionality before
523 * the namespace has been evaluated.
525 * XXX This happens before the sysresource devices have been probed and
526 * attached so its resources come from nexus0. In practice, this isn't
527 * a problem but should be addressed eventually.
529 acpi_ec_ecdt_probe(dev);
531 /* Bring device objects and regions online. */
532 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
533 device_printf(dev, "Could not initialize ACPI objects: %s\n",
534 AcpiFormatException(status));
539 * Setup our sysctl tree.
541 * XXX: This doesn't check to make sure that none of these fail.
543 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
544 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
545 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
546 device_get_name(dev), CTLFLAG_RD, 0, "");
547 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
548 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
549 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
550 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
551 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
552 &sc->acpi_power_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, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
555 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
556 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
557 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
558 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
559 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
560 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
561 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
562 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
563 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
564 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
565 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
566 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
568 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
569 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
570 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
571 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
572 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
573 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
574 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
575 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
576 OID_AUTO, "handle_reboot", CTLFLAG_RW,
577 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
580 * Default to 1 second before sleeping to give some machines time to
583 sc->acpi_sleep_delay = 1;
585 sc->acpi_verbose = 1;
586 if ((env = kgetenv("hw.acpi.verbose")) != NULL) {
587 if (strcmp(env, "0") != 0)
588 sc->acpi_verbose = 1;
592 /* Only enable reboot by default if the FADT says it is available. */
593 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER)
594 sc->acpi_handle_reboot = 1;
596 /* Only enable S4BIOS by default if the FACS says it is available. */
597 if (AcpiGbl_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 acpi_task_thread_schedule();
669 return_VALUE (error);
673 acpi_suspend(device_t dev)
675 device_t child, *devlist;
676 int error, i, numdevs, pstate;
680 /* First give child devices a chance to suspend. */
681 error = bus_generic_suspend(dev);
686 * Now, set them into the appropriate power state, usually D3. If the
687 * device has an _SxD method for the next sleep state, use that power
690 device_get_children(dev, &devlist, &numdevs);
691 for (i = 0; i < numdevs; i++) {
692 /* If the device is not attached, we've powered it down elsewhere. */
694 if (!device_is_attached(child))
698 * Default to D3 for all sleep states. The _SxD method is optional
699 * so set the powerstate even if it's absent.
701 pstate = PCI_POWERSTATE_D3;
702 error = acpi_device_pwr_for_sleep(device_get_parent(child),
704 if ((error == 0 || error == ESRCH) && acpi_do_powerstate)
705 pci_set_powerstate(child, pstate);
707 kfree(devlist, M_TEMP);
714 acpi_resume(device_t dev)
718 device_t child, *devlist;
723 * Put all devices in D0 before resuming them. Call _S0D on each one
724 * since some systems expect this.
726 device_get_children(dev, &devlist, &numdevs);
727 for (i = 0; i < numdevs; i++) {
729 handle = acpi_get_handle(child);
731 AcpiEvaluateObject(handle, "_S0D", NULL, NULL);
732 if (device_is_attached(child) && acpi_do_powerstate)
733 pci_set_powerstate(child, PCI_POWERSTATE_D0);
735 kfree(devlist, M_TEMP);
737 return (bus_generic_resume(dev));
741 acpi_shutdown(device_t dev)
746 /* Allow children to shutdown first. */
747 bus_generic_shutdown(dev);
750 * Enable any GPEs that are able to power-on the system (i.e., RTC).
751 * Also, disable any that are not valid for this state (most).
753 acpi_wake_prep_walk(ACPI_STATE_S5);
759 * Handle a new device being added
762 acpi_add_child(device_t bus, device_t parent, int order, const char *name, int unit)
764 struct acpi_device *ad;
767 if ((ad = kmalloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
770 resource_list_init(&ad->ad_rl);
771 child = device_add_child_ordered(parent, order, name, unit);
773 device_set_ivars(child, ad);
775 kfree(ad, M_ACPIDEV);
780 acpi_print_child(device_t bus, device_t child)
782 struct acpi_device *adev = device_get_ivars(child);
783 struct resource_list *rl = &adev->ad_rl;
786 retval += bus_print_child_header(bus, child);
787 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
788 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
789 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
790 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
791 if (device_get_flags(child))
792 retval += kprintf(" flags %#x", device_get_flags(child));
793 retval += bus_print_child_footer(bus, child);
799 * If this device is an ACPI child but no one claimed it, attempt
800 * to power it off. We'll power it back up when a driver is added.
802 * XXX Disabled for now since many necessary devices (like fdc and
803 * ATA) don't claim the devices we created for them but still expect
804 * them to be powered up.
807 acpi_probe_nomatch(device_t bus, device_t child)
810 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
814 * If a new driver has a chance to probe a child, first power it up.
816 * XXX Disabled for now (see acpi_probe_nomatch for details).
819 acpi_driver_added(device_t dev, driver_t *driver)
821 device_t child, *devlist;
824 DEVICE_IDENTIFY(driver, dev);
825 device_get_children(dev, &devlist, &numdevs);
826 for (i = 0; i < numdevs; i++) {
828 if (device_get_state(child) == DS_NOTPRESENT) {
829 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
830 if (device_probe_and_attach(child) != 0)
831 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
834 kfree(devlist, M_TEMP);
837 /* Location hint for devctl(8) */
839 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
842 struct acpi_device *dinfo = device_get_ivars(child);
844 if (dinfo->ad_handle)
845 ksnprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
847 ksnprintf(buf, buflen, "unknown");
851 /* PnP information for devctl(8) */
853 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
856 ACPI_DEVICE_INFO *adinfo;
857 struct acpi_device *dinfo = device_get_ivars(child);
861 error = AcpiGetObjectInfo(dinfo->ad_handle, &adinfo);
863 ksnprintf(buf, buflen, "unknown");
865 ksnprintf(buf, buflen, "_HID=%s _UID=%lu",
866 (adinfo->Valid & ACPI_VALID_HID) ?
867 adinfo->HardwareId.String : "none",
868 (adinfo->Valid & ACPI_VALID_UID) ?
869 strtoul(adinfo->UniqueId.String, &end, 10) : 0);
877 * Handle per-device ivars
880 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
882 struct acpi_device *ad;
884 if ((ad = device_get_ivars(child)) == NULL) {
885 kprintf("device has no ivars\n");
889 /* ACPI and ISA compatibility ivars */
891 case ACPI_IVAR_HANDLE:
892 *(ACPI_HANDLE *)result = ad->ad_handle;
894 case ACPI_IVAR_MAGIC:
895 *result = ad->ad_magic;
897 case ACPI_IVAR_PRIVATE:
898 *(void **)result = ad->ad_private;
900 case ACPI_IVAR_FLAGS:
901 *(int *)result = ad->ad_flags;
903 case ISA_IVAR_VENDORID:
904 case ISA_IVAR_SERIAL:
905 case ISA_IVAR_COMPATID:
908 case ISA_IVAR_LOGICALID:
909 *(int *)result = acpi_isa_get_logicalid(child);
919 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
921 struct acpi_device *ad;
923 if ((ad = device_get_ivars(child)) == NULL) {
924 kprintf("device has no ivars\n");
929 case ACPI_IVAR_HANDLE:
930 ad->ad_handle = (ACPI_HANDLE)value;
932 case ACPI_IVAR_MAGIC:
933 ad->ad_magic = value;
935 case ACPI_IVAR_PRIVATE:
936 ad->ad_private = (void *)value;
938 case ACPI_IVAR_FLAGS:
939 ad->ad_flags = (int)value;
942 panic("bad ivar write request (%d)", index);
950 * Handle child resource allocation/removal
952 static struct resource_list *
953 acpi_get_rlist(device_t dev, device_t child)
955 struct acpi_device *ad;
957 ad = device_get_ivars(child);
962 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
963 * duplicates, we merge any in the sysresource attach routine.
966 acpi_sysres_alloc(device_t dev)
968 struct resource *res;
969 struct resource_list *rl;
970 struct resource_list_entry *rle;
972 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
976 * Probe/attach any sysresource devices. This would be unnecessary if we
977 * had multi-pass probe/attach.
979 if (device_get_children(dev, &children, &child_count) != 0)
981 for (i = 0; i < child_count; i++) {
982 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
983 device_probe_and_attach(children[i]);
985 kfree(children, M_TEMP);
987 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
990 SLIST_FOREACH(rle, rl, link) {
991 if (rle->res != NULL) {
992 device_printf(dev, "duplicate resource for %lx\n", rle->start);
996 /* Only memory and IO resources are valid here. */
1001 case SYS_RES_MEMORY:
1002 rm = &acpi_rman_mem;
1008 /* Pre-allocate resource and add to our rman pool. */
1009 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1010 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count,
1013 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1016 device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1017 rle->start, rle->count, rle->type);
1022 static struct resource *
1023 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
1024 u_long start, u_long end, u_long count, u_int flags, int cpuid)
1027 struct acpi_device *ad = device_get_ivars(child);
1028 struct resource_list *rl = &ad->ad_rl;
1029 struct resource_list_entry *rle;
1030 struct resource *res;
1035 /* We only handle memory and IO resources through rman. */
1037 case SYS_RES_IOPORT:
1040 case SYS_RES_MEMORY:
1041 rm = &acpi_rman_mem;
1047 ACPI_SERIAL_BEGIN(acpi);
1050 * If this is an allocation of the "default" range for a given RID, and
1051 * we know what the resources for this device are (i.e., they're on the
1052 * child's resource list), use those start/end values.
1054 if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) {
1055 rle = resource_list_find(rl, type, *rid);
1065 * If this is an allocation of a specific range, see if we can satisfy
1066 * the request from our system resource regions. If we can't, pass the
1067 * request up to the parent.
1069 if (start + count - 1 == end && rm != NULL)
1070 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1073 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1074 start, end, count, flags, cpuid);
1076 rman_set_rid(res, *rid);
1078 /* If requested, activate the resource using the parent's method. */
1079 if (flags & RF_ACTIVE)
1080 if (bus_activate_resource(child, type, *rid, res) != 0) {
1081 rman_release_resource(res);
1087 if (res != NULL && device_get_parent(child) == bus)
1091 * Since bus_config_intr() takes immediate effect, we cannot
1092 * configure the interrupt associated with a device when we
1093 * parse the resources but have to defer it until a driver
1094 * actually allocates the interrupt via bus_alloc_resource().
1096 * XXX: Should we handle the lookup failing?
1098 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
1099 acpi_config_intr(child, &ares);
1101 kprintf("irq resource not found\n");
1106 ACPI_SERIAL_END(acpi);
1111 acpi_release_resource(device_t bus, device_t child, int type, int rid,
1117 /* We only handle memory and IO resources through rman. */
1119 case SYS_RES_IOPORT:
1122 case SYS_RES_MEMORY:
1123 rm = &acpi_rman_mem;
1129 ACPI_SERIAL_BEGIN(acpi);
1132 * If this resource belongs to one of our internal managers,
1133 * deactivate it and release it to the local pool. If it doesn't,
1134 * pass this request up to the parent.
1136 if (rm != NULL && rman_is_region_manager(r, rm)) {
1137 if (rman_get_flags(r) & RF_ACTIVE) {
1138 ret = bus_deactivate_resource(child, type, rid, r);
1142 ret = rman_release_resource(r);
1144 ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
1147 ACPI_SERIAL_END(acpi);
1152 acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1154 struct resource_list *rl;
1156 rl = acpi_get_rlist(bus, child);
1157 resource_list_delete(rl, type, rid);
1160 /* Allocate an IO port or memory resource, given its GAS. */
1162 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1163 struct resource **res, u_int flags)
1165 int error, res_type;
1168 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1171 /* We only support memory and IO spaces. */
1172 switch (gas->SpaceId) {
1173 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1174 res_type = SYS_RES_MEMORY;
1176 case ACPI_ADR_SPACE_SYSTEM_IO:
1177 res_type = SYS_RES_IOPORT;
1180 return (EOPNOTSUPP);
1184 * If the register width is less than 8, assume the BIOS author means
1185 * it is a bit field and just allocate a byte.
1187 if (gas->BitWidth && gas->BitWidth < 8)
1190 /* Validate the address after we're sure we support the space. */
1191 if (gas->Address == 0 || gas->BitWidth == 0)
1194 bus_set_resource(dev, res_type, *rid, gas->Address,
1195 gas->BitWidth / 8, -1);
1196 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1201 bus_delete_resource(dev, res_type, *rid);
1206 /* Probe _HID and _CID for compatible ISA PNP ids. */
1208 acpi_isa_get_logicalid(device_t dev)
1210 ACPI_DEVICE_INFO *devinfo;
1215 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1220 /* Fetch and validate the HID. */
1221 if ((h = acpi_get_handle(dev)) == NULL)
1223 error = AcpiGetObjectInfo(h, &devinfo);
1224 if (ACPI_FAILURE(error))
1227 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
1228 pnpid = PNP_EISAID(devinfo->HardwareId.String);
1232 AcpiOsFree(devinfo);
1233 return_VALUE (pnpid);
1237 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1239 ACPI_DEVICE_INFO *devinfo;
1245 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1251 /* Fetch and validate the CID */
1252 if ((h = acpi_get_handle(dev)) == NULL)
1254 error = AcpiGetObjectInfo(h, &devinfo);
1255 if (ACPI_FAILURE(error))
1257 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
1260 if (devinfo->CompatibleIdList.Count < count)
1261 count = devinfo->CompatibleIdList.Count;
1262 for (i = 0; i < count; i++) {
1263 if (strncmp(devinfo->CompatibleIdList.Ids[i].String, "PNP", 3) != 0)
1265 *pnpid++ = PNP_EISAID(devinfo->CompatibleIdList.Ids[i].String);
1271 AcpiOsFree(devinfo);
1272 return_VALUE (valid);
1276 acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1281 h = acpi_get_handle(dev);
1282 if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE)
1285 /* Try to match one of the array of IDs with a HID or CID. */
1286 for (i = 0; ids[i] != NULL; i++) {
1287 if (acpi_MatchHid(h, ids[i]))
1294 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1295 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1300 h = ACPI_ROOT_OBJECT;
1301 else if ((h = acpi_get_handle(dev)) == NULL)
1302 return (AE_BAD_PARAMETER);
1303 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1307 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1309 struct acpi_softc *sc;
1315 sc = device_get_softc(bus);
1316 handle = acpi_get_handle(dev);
1319 * XXX If we find these devices, don't try to power them down.
1320 * The serial and IRDA ports on my T23 hang the system when
1321 * set to D3 and it appears that such legacy devices may
1322 * need special handling in their drivers.
1324 if (handle == NULL ||
1325 acpi_MatchHid(handle, "PNP0500") ||
1326 acpi_MatchHid(handle, "PNP0501") ||
1327 acpi_MatchHid(handle, "PNP0502") ||
1328 acpi_MatchHid(handle, "PNP0510") ||
1329 acpi_MatchHid(handle, "PNP0511"))
1333 * Override next state with the value from _SxD, if present. If no
1334 * dstate argument was provided, don't fetch the return value.
1336 ksnprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1338 status = acpi_GetInteger(handle, sxd, dstate);
1340 status = AcpiEvaluateObject(handle, sxd, NULL, NULL);
1357 /* Callback arg for our implementation of walking the namespace. */
1358 struct acpi_device_scan_ctx {
1359 acpi_scan_cb_t user_fn;
1365 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1367 struct acpi_device_scan_ctx *ctx;
1368 device_t dev, old_dev;
1370 ACPI_OBJECT_TYPE type;
1373 * Skip this device if we think we'll have trouble with it or it is
1374 * the parent where the scan began.
1376 ctx = (struct acpi_device_scan_ctx *)arg;
1377 if (acpi_avoid(h) || h == ctx->parent)
1380 /* If this is not a valid device type (e.g., a method), skip it. */
1381 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1383 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1384 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1388 * Call the user function with the current device. If it is unchanged
1389 * afterwards, return. Otherwise, we update the handle to the new dev.
1391 old_dev = acpi_get_device(h);
1393 status = ctx->user_fn(h, &dev, level, ctx->arg);
1394 if (ACPI_FAILURE(status) || old_dev == dev)
1397 /* Remove the old child and its connection to the handle. */
1398 if (old_dev != NULL) {
1399 device_delete_child(device_get_parent(old_dev), old_dev);
1400 AcpiDetachData(h, acpi_fake_objhandler);
1403 /* Recreate the handle association if the user created a device. */
1405 AcpiAttachData(h, acpi_fake_objhandler, dev);
1411 acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1412 acpi_scan_cb_t user_fn, void *arg)
1415 struct acpi_device_scan_ctx ctx;
1417 if (acpi_disabled("children"))
1421 h = ACPI_ROOT_OBJECT;
1422 else if ((h = acpi_get_handle(dev)) == NULL)
1423 return (AE_BAD_PARAMETER);
1424 ctx.user_fn = user_fn;
1427 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1428 acpi_device_scan_cb, NULL, &ctx, NULL));
1432 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1433 * device power states since it's close enough to ACPI.
1436 acpi_set_powerstate_method(device_t bus, device_t child, int state)
1443 h = acpi_get_handle(child);
1444 if (state < ACPI_STATE_D0 || state > ACPI_STATE_D3)
1449 /* Ignore errors if the power methods aren't present. */
1450 status = acpi_pwr_switch_consumer(h, state);
1451 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND
1452 && status != AE_BAD_PARAMETER)
1453 device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n",
1454 state, acpi_name(h), AcpiFormatException(status));
1460 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1462 int result, cid_count, i;
1463 uint32_t lid, cids[8];
1465 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1468 * ISA-style drivers attached to ACPI may persist and
1469 * probe manually if we return ENOENT. We never want
1470 * that to happen, so don't ever return it.
1474 /* Scan the supplied IDs for a match */
1475 lid = acpi_isa_get_logicalid(child);
1476 cid_count = acpi_isa_get_compatid(child, cids, 8);
1477 while (ids && ids->ip_id) {
1478 if (lid == ids->ip_id) {
1482 for (i = 0; i < cid_count; i++) {
1483 if (cids[i] == ids->ip_id) {
1492 if (result == 0 && ids->ip_desc)
1493 device_set_desc(child, ids->ip_desc);
1495 return_VALUE (result);
1499 * Look for a MCFG table. If it is present, use the settings for
1500 * domain (segment) 0 to setup PCI config space access via the memory
1504 acpi_enable_pcie(void)
1506 ACPI_TABLE_HEADER *hdr;
1507 ACPI_MCFG_ALLOCATION *alloc, *end;
1510 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1511 if (ACPI_FAILURE(status))
1514 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1515 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1516 while (alloc < end) {
1517 if (alloc->PciSegment == 0) {
1518 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1519 alloc->EndBusNumber);
1527 * Scan all of the ACPI namespace and attach child devices.
1529 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1530 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1531 * However, in violation of the spec, some systems place their PCI link
1532 * devices in \, so we have to walk the whole namespace. We check the
1533 * type of namespace nodes, so this should be ok.
1536 acpi_probe_children(device_t bus)
1539 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1542 * Scan the namespace and insert placeholders for all the devices that
1543 * we find. We also probe/attach any early devices.
1545 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1546 * we want to create nodes for all devices, not just those that are
1547 * currently present. (This assumes that we don't want to create/remove
1548 * devices as they appear, which might be smarter.)
1550 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1551 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100,
1552 acpi_probe_child, NULL, bus, NULL);
1554 /* Pre-allocate resources for our rman from any sysresource devices. */
1555 acpi_sysres_alloc(bus);
1556 /* Create any static children by calling device identify methods. */
1557 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1558 bus_generic_probe(bus);
1560 /* Probe/attach all children, created staticly and from the namespace. */
1561 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1562 bus_generic_attach(bus);
1565 * Some of these children may have attached others as part of their attach
1566 * process (eg. the root PCI bus driver), so rescan.
1568 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1569 bus_generic_attach(bus);
1571 /* Attach wake sysctls. */
1572 acpi_wake_sysctl_walk(bus);
1574 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1579 * Determine the probe order for a given device.
1582 acpi_probe_order(ACPI_HANDLE handle, int *order)
1584 ACPI_OBJECT_TYPE type;
1587 * 1. I/O port and memory system resource holders
1588 * 2. Embedded controllers (to handle early accesses)
1589 * 3. PCI Link Devices
1592 AcpiGetType(handle, &type);
1593 if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
1595 else if (acpi_MatchHid(handle, "PNP0C09"))
1597 else if (acpi_MatchHid(handle, "PNP0C0F"))
1599 else if (type == ACPI_TYPE_PROCESSOR)
1604 * Evaluate a child device and determine whether we might attach a device to
1608 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1610 struct acpi_prw_data prw;
1611 ACPI_OBJECT_TYPE type;
1613 device_t bus, child;
1617 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1619 if (acpi_disabled("children"))
1620 return_ACPI_STATUS (AE_OK);
1622 /* Skip this device if we think we'll have trouble with it. */
1623 if (acpi_avoid(handle))
1624 return_ACPI_STATUS (AE_OK);
1626 bus = (device_t)context;
1627 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1628 handle_str = acpi_name(handle);
1630 case ACPI_TYPE_DEVICE:
1632 * Since we scan from \, be sure to skip system scope objects.
1633 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1634 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
1635 * during the intialization and \_TZ_ is to support Notify() on it.
1637 if (strcmp(handle_str, "\\_SB_") == 0 ||
1638 strcmp(handle_str, "\\_TZ_") == 0)
1641 if (acpi_parse_prw(handle, &prw) == 0)
1642 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
1645 case ACPI_TYPE_PROCESSOR:
1646 case ACPI_TYPE_THERMAL:
1647 case ACPI_TYPE_POWER:
1649 * Create a placeholder device for this node. Sort the
1650 * placeholder so that the probe/attach passes will run
1651 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1652 * are reserved for special objects (i.e., system
1653 * resources). CPU devices have a very high order to
1654 * ensure they are probed after other devices.
1656 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1657 order = level * 10 + 100;
1658 acpi_probe_order(handle, &order);
1659 child = BUS_ADD_CHILD(bus, bus, order, NULL, -1);
1663 /* Associate the handle with the device_t and vice versa. */
1664 acpi_set_handle(child, handle);
1665 AcpiAttachData(handle, acpi_fake_objhandler, child);
1668 * Check that the device is present. If it's not present,
1669 * leave it disabled (so that we have a device_t attached to
1670 * the handle, but we don't probe it).
1672 * XXX PCI link devices sometimes report "present" but not
1673 * "functional" (i.e. if disabled). Go ahead and probe them
1674 * anyway since we may enable them later.
1676 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1677 /* Never disable PCI link devices. */
1678 if (acpi_MatchHid(handle, "PNP0C0F"))
1681 * Docking stations should remain enabled since the system
1682 * may be undocked at boot.
1684 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1687 device_disable(child);
1692 * Get the device's resource settings and attach them.
1693 * Note that if the device has _PRS but no _CRS, we need
1694 * to decide when it's appropriate to try to configure the
1695 * device. Ignore the return value here; it's OK for the
1696 * device not to have any resources.
1698 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
1703 return_ACPI_STATUS (AE_OK);
1707 * AcpiAttachData() requires an object handler but never uses it. This is a
1708 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1711 acpi_fake_objhandler(ACPI_HANDLE h, void *data)
1716 acpi_shutdown_final(void *arg, int howto)
1718 struct acpi_softc *sc;
1722 * XXX Shutdown code should only run on the BSP (cpuid 0).
1723 * Some chipsets do not power off the system correctly if called from
1727 if ((howto & RB_POWEROFF) != 0) {
1728 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1729 if (ACPI_FAILURE(status)) {
1730 kprintf("AcpiEnterSleepStatePrep failed - %s\n",
1731 AcpiFormatException(status));
1734 kprintf("Powering system off using ACPI\n");
1735 ACPI_DISABLE_IRQS();
1736 status = AcpiEnterSleepState(ACPI_STATE_S5);
1737 if (ACPI_FAILURE(status)) {
1738 kprintf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1741 kprintf("ACPI power-off failed - timeout\n");
1743 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) {
1744 /* Reboot using the reset register. */
1745 status = AcpiReset();
1746 if (ACPI_FAILURE(status)) {
1747 if (status != AE_NOT_EXIST)
1748 kprintf("ACPI reset failed - %s\n", AcpiFormatException(status));
1751 kprintf("ACPI reset failed - timeout\n");
1753 } else if (sc->acpi_do_disable && panicstr == NULL) {
1755 * Only disable ACPI if the user requested. On some systems, writing
1756 * the disable value to SMI_CMD hangs the system.
1758 kprintf("Shutting down ACPI\n");
1764 acpi_enable_fixed_events(struct acpi_softc *sc)
1766 static int first_time = 1;
1768 /* Enable and clear fixed events and install handlers. */
1769 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
1770 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1771 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1772 acpi_event_power_button_sleep, sc);
1774 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1776 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
1777 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1778 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1779 acpi_event_sleep_button_sleep, sc);
1781 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1788 * Returns true if the device is actually present and should
1789 * be attached to. This requires the present, enabled, UI-visible
1790 * and diagnostics-passed bits to be set.
1793 acpi_DeviceIsPresent(device_t dev)
1795 ACPI_DEVICE_INFO *devinfo;
1801 if ((h = acpi_get_handle(dev)) == NULL)
1803 error = AcpiGetObjectInfo(h, &devinfo);
1804 if (ACPI_FAILURE(error))
1807 /* If no _STA method, must be present */
1808 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1811 /* Return true for 'present' and 'functioning' */
1812 if (ACPI_DEVICE_PRESENT(devinfo->CurrentStatus))
1815 AcpiOsFree(devinfo);
1820 * Returns true if the battery is actually present and inserted.
1823 acpi_BatteryIsPresent(device_t dev)
1825 ACPI_DEVICE_INFO *devinfo;
1831 if ((h = acpi_get_handle(dev)) == NULL)
1833 error = AcpiGetObjectInfo(h, &devinfo);
1834 if (ACPI_FAILURE(error))
1837 /* If no _STA method, must be present */
1838 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1841 /* Return true for 'present', 'battery present', and 'functioning' */
1842 if (ACPI_BATTERY_PRESENT(devinfo->CurrentStatus))
1845 AcpiOsFree(devinfo);
1850 * Match a HID string against a handle
1853 acpi_MatchHid(ACPI_HANDLE h, const char *hid)
1855 ACPI_DEVICE_INFO *devinfo;
1860 if (hid == NULL || h == NULL)
1862 error = AcpiGetObjectInfo(h, &devinfo);
1863 if (ACPI_FAILURE(error))
1866 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
1867 strcmp(hid, devinfo->HardwareId.String) == 0)
1869 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
1870 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
1871 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
1878 AcpiOsFree(devinfo);
1883 * Return the handle of a named object within our scope, ie. that of (parent)
1884 * or one if its parents.
1887 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1892 /* Walk back up the tree to the root */
1894 status = AcpiGetHandle(parent, path, &r);
1895 if (ACPI_SUCCESS(status)) {
1899 /* XXX Return error here? */
1900 if (status != AE_NOT_FOUND)
1902 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1903 return (AE_NOT_FOUND);
1909 * Allocate a buffer with a preset data size.
1912 acpi_AllocBuffer(int size)
1916 if ((buf = kmalloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
1919 buf->Pointer = (void *)(buf + 1);
1924 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
1927 ACPI_OBJECT_LIST args;
1929 arg1.Type = ACPI_TYPE_INTEGER;
1930 arg1.Integer.Value = number;
1932 args.Pointer = &arg1;
1934 return (AcpiEvaluateObject(handle, path, &args, NULL));
1938 * Evaluate a path that should return an integer.
1941 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
1948 handle = ACPI_ROOT_OBJECT;
1951 * Assume that what we've been pointed at is an Integer object, or
1952 * a method that will return an Integer.
1954 buf.Pointer = ¶m;
1955 buf.Length = sizeof(param);
1956 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1957 if (ACPI_SUCCESS(status)) {
1958 if (param.Type == ACPI_TYPE_INTEGER)
1959 *number = param.Integer.Value;
1965 * In some applications, a method that's expected to return an Integer
1966 * may instead return a Buffer (probably to simplify some internal
1967 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1968 * convert it into an Integer as best we can.
1972 if (status == AE_BUFFER_OVERFLOW) {
1973 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
1974 status = AE_NO_MEMORY;
1976 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1977 if (ACPI_SUCCESS(status))
1978 status = acpi_ConvertBufferToInteger(&buf, number);
1979 AcpiOsFree(buf.Pointer);
1986 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
1992 p = (ACPI_OBJECT *)bufp->Pointer;
1993 if (p->Type == ACPI_TYPE_INTEGER) {
1994 *number = p->Integer.Value;
1997 if (p->Type != ACPI_TYPE_BUFFER)
1999 if (p->Buffer.Length > sizeof(int))
2000 return (AE_BAD_DATA);
2003 val = p->Buffer.Pointer;
2004 for (i = 0; i < p->Buffer.Length; i++)
2005 *number += val[i] << (i * 8);
2010 * Iterate over the elements of an a package object, calling the supplied
2011 * function for each element.
2013 * XXX possible enhancement might be to abort traversal on error.
2016 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2017 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2022 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2023 return (AE_BAD_PARAMETER);
2025 /* Iterate over components */
2027 comp = pkg->Package.Elements;
2028 for (; i < pkg->Package.Count; i++, comp++)
2035 * Find the (index)th resource object in a set.
2038 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2043 rp = (ACPI_RESOURCE *)buf->Pointer;
2047 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2048 return (AE_BAD_PARAMETER);
2050 /* Check for terminator */
2051 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2052 return (AE_NOT_FOUND);
2053 rp = ACPI_NEXT_RESOURCE(rp);
2062 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2064 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2065 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2066 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2069 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2072 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2077 /* Initialise the buffer if necessary. */
2078 if (buf->Pointer == NULL) {
2079 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2080 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2081 return (AE_NO_MEMORY);
2082 rp = (ACPI_RESOURCE *)buf->Pointer;
2083 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2090 * Scan the current buffer looking for the terminator.
2091 * This will either find the terminator or hit the end
2092 * of the buffer and return an error.
2094 rp = (ACPI_RESOURCE *)buf->Pointer;
2096 /* Range check, don't go outside the buffer */
2097 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2098 return (AE_BAD_PARAMETER);
2099 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2101 rp = ACPI_NEXT_RESOURCE(rp);
2105 * Check the size of the buffer and expand if required.
2108 * size of existing resources before terminator +
2109 * size of new resource and header +
2110 * size of terminator.
2112 * Note that this loop should really only run once, unless
2113 * for some reason we are stuffing a *really* huge resource.
2115 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2116 res->Length + ACPI_RS_SIZE_NO_DATA +
2117 ACPI_RS_SIZE_MIN) >= buf->Length) {
2118 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2119 return (AE_NO_MEMORY);
2120 bcopy(buf->Pointer, newp, buf->Length);
2121 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2122 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
2123 AcpiOsFree(buf->Pointer);
2124 buf->Pointer = newp;
2125 buf->Length += buf->Length;
2128 /* Insert the new resource. */
2129 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2131 /* And add the terminator. */
2132 rp = ACPI_NEXT_RESOURCE(rp);
2133 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2140 * Set interrupt model.
2143 acpi_SetIntrModel(int model)
2146 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2150 * DEPRECATED. This interface has serious deficiencies and will be
2153 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2154 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2157 acpi_SetSleepState(struct acpi_softc *sc, int state)
2163 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2166 return (acpi_EnterSleepState(sc, state));
2170 acpi_sleep_force(void *arg)
2172 struct acpi_softc *sc;
2174 kprintf("acpi: suspend request timed out, forcing sleep now\n");
2176 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2177 kprintf("acpi: force sleep state S%d failed\n", sc->acpi_next_sstate);
2181 * Request that the system enter the given suspend state. All /dev/apm
2182 * devices and devd(8) will be notified. Userland then has a chance to
2183 * save state and acknowledge the request. The system sleeps once all
2187 acpi_ReqSleepState(struct acpi_softc *sc, int state)
2190 struct apm_clone_data *clone;
2193 if (state < ACPI_STATE_S1 || state > ACPI_STATE_S5)
2196 /* S5 (soft-off) should be entered directly with no waiting. */
2197 if (state == ACPI_STATE_S5) {
2198 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, state)))
2204 #if !defined(__i386__)
2205 /* This platform does not support acpi suspend/resume. */
2206 return (EOPNOTSUPP);
2209 /* If a suspend request is already in progress, just return. */
2211 if (sc->acpi_next_sstate != 0) {
2216 /* Record the pending state and notify all apm devices. */
2217 sc->acpi_next_sstate = state;
2219 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2220 clone->notify_status = APM_EV_NONE;
2221 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
2222 KNOTE(&clone->sel_read.si_note, 0);
2227 /* If devd(8) is not running, immediately enter the sleep state. */
2228 if (devctl_process_running() == FALSE) {
2230 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) {
2237 /* Now notify devd(8) also. */
2238 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2241 * Set a timeout to fire if userland doesn't ack the suspend request
2242 * in time. This way we still eventually go to sleep if we were
2243 * overheating or running low on battery, even if userland is hung.
2244 * We cancel this timeout once all userland acks are in or the
2245 * suspend request is aborted.
2247 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2253 * Acknowledge (or reject) a pending sleep state. The caller has
2254 * prepared for suspend and is now ready for it to proceed. If the
2255 * error argument is non-zero, it indicates suspend should be cancelled
2256 * and gives an errno value describing why. Once all votes are in,
2257 * we suspend the system.
2260 acpi_AckSleepState(struct apm_clone_data *clone, int error)
2262 struct acpi_softc *sc;
2265 #if !defined(__i386__)
2266 /* This platform does not support acpi suspend/resume. */
2267 return (EOPNOTSUPP);
2270 /* If no pending sleep state, return an error. */
2272 sc = clone->acpi_sc;
2273 if (sc->acpi_next_sstate == 0) {
2278 /* Caller wants to abort suspend process. */
2280 sc->acpi_next_sstate = 0;
2281 callout_stop(&sc->susp_force_to);
2282 kprintf("acpi: listener on %s cancelled the pending suspend\n",
2283 devtoname(clone->cdev));
2289 * Mark this device as acking the suspend request. Then, walk through
2290 * all devices, seeing if they agree yet. We only count devices that
2291 * are writable since read-only devices couldn't ack the request.
2293 clone->notify_status = APM_EV_ACKED;
2295 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2296 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2297 clone->notify_status != APM_EV_ACKED) {
2303 /* If all devices have voted "yes", we will suspend now. */
2305 callout_stop(&sc->susp_force_to);
2309 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2317 acpi_sleep_enable(void *arg)
2319 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
2322 enum acpi_sleep_state {
2325 ACPI_SS_DEV_SUSPEND,
2331 * Enter the desired system sleep state.
2333 * Currently we support S1-S5 but S4 is only S4BIOS
2336 acpi_EnterSleepState(struct acpi_softc *sc, int state)
2341 enum acpi_sleep_state slp_state;
2343 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2345 /* Re-entry once we're suspending is not allowed. */
2348 if (sc->acpi_sleep_disabled) {
2350 kprintf("acpi: suspend request ignored (not ready yet)\n");
2353 sc->acpi_sleep_disabled = 1;
2357 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2358 * drivers need this.
2361 slp_state = ACPI_SS_NONE;
2367 status = AcpiGetSleepTypeData(state, &TypeA, &TypeB);
2368 if (status == AE_NOT_FOUND) {
2369 device_printf(sc->acpi_dev,
2370 "Sleep state S%d not supported by BIOS\n", state);
2372 } else if (ACPI_FAILURE(status)) {
2373 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
2374 AcpiFormatException(status));
2378 sc->acpi_sstate = state;
2380 /* Enable any GPEs as appropriate and requested by the user. */
2381 acpi_wake_prep_walk(state);
2382 slp_state = ACPI_SS_GPE_SET;
2385 * Inform all devices that we are going to sleep. If at least one
2386 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2388 * XXX Note that a better two-pass approach with a 'veto' pass
2389 * followed by a "real thing" pass would be better, but the current
2390 * bus interface does not provide for this.
2392 if (DEVICE_SUSPEND(root_bus) != 0) {
2393 device_printf(sc->acpi_dev, "device_suspend failed\n");
2396 slp_state = ACPI_SS_DEV_SUSPEND;
2398 /* If testing device suspend only, back out of everything here. */
2399 if (acpi_susp_bounce)
2402 status = AcpiEnterSleepStatePrep(state);
2403 if (ACPI_FAILURE(status)) {
2404 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2405 AcpiFormatException(status));
2408 slp_state = ACPI_SS_SLP_PREP;
2410 if (sc->acpi_sleep_delay > 0)
2411 DELAY(sc->acpi_sleep_delay * 1000000);
2413 if (state != ACPI_STATE_S1) {
2414 acpi_sleep_machdep(sc, state);
2416 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2417 if (state == ACPI_STATE_S4)
2420 ACPI_DISABLE_IRQS();
2421 status = AcpiEnterSleepState(state);
2422 if (ACPI_FAILURE(status)) {
2423 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2424 AcpiFormatException(status));
2428 slp_state = ACPI_SS_SLEPT;
2432 * Shut down cleanly and power off. This will call us back through the
2433 * shutdown handlers.
2435 shutdown_nice(RB_POWEROFF);
2439 status = AE_BAD_PARAMETER;
2444 * Back out state according to how far along we got in the suspend
2445 * process. This handles both the error and success cases.
2447 sc->acpi_next_sstate = 0;
2448 if (slp_state >= ACPI_SS_GPE_SET) {
2449 acpi_wake_prep_walk(state);
2450 sc->acpi_sstate = ACPI_STATE_S0;
2452 if (slp_state >= ACPI_SS_SLP_PREP)
2453 AcpiLeaveSleepState(state);
2454 if (slp_state >= ACPI_SS_DEV_SUSPEND)
2455 DEVICE_RESUME(root_bus);
2456 if (slp_state >= ACPI_SS_SLEPT)
2457 acpi_enable_fixed_events(sc);
2459 /* Allow another sleep request after a while. */
2460 /* XXX: needs timeout */
2461 if (state != ACPI_STATE_S5)
2462 acpi_sleep_enable(sc);
2464 /* Run /etc/rc.resume after we are back. */
2465 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2468 return_ACPI_STATUS (status);
2471 /* Enable or disable the device's GPE. */
2473 acpi_wake_set_enable(device_t dev, int enable)
2475 struct acpi_prw_data prw;
2479 /* Make sure the device supports waking the system and get the GPE. */
2480 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2483 flags = acpi_get_flags(dev);
2485 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
2487 if (ACPI_FAILURE(status)) {
2488 device_printf(dev, "enable wake failed\n");
2491 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2493 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
2495 if (ACPI_FAILURE(status)) {
2496 device_printf(dev, "disable wake failed\n");
2499 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2506 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
2508 struct acpi_prw_data prw;
2511 /* Check that this is a wake-capable device and get its GPE. */
2512 if (acpi_parse_prw(handle, &prw) != 0)
2514 dev = acpi_get_device(handle);
2517 * The destination sleep state must be less than (i.e., higher power)
2518 * or equal to the value specified by _PRW. If this GPE cannot be
2519 * enabled for the next sleep state, then disable it. If it can and
2520 * the user requested it be enabled, turn on any required power resources
2523 if (sstate > prw.lowest_wake) {
2524 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
2526 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2527 acpi_name(handle), sstate);
2528 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2529 acpi_pwr_wake_enable(handle, 1);
2530 acpi_SetInteger(handle, "_PSW", 1);
2532 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2533 acpi_name(handle), sstate);
2540 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
2542 struct acpi_prw_data prw;
2546 * Check that this is a wake-capable device and get its GPE. Return
2547 * now if the user didn't enable this device for wake.
2549 if (acpi_parse_prw(handle, &prw) != 0)
2551 dev = acpi_get_device(handle);
2552 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2556 * If this GPE couldn't be enabled for the previous sleep state, it was
2557 * disabled before going to sleep so re-enable it. If it was enabled,
2558 * clear _PSW and turn off any power resources it used.
2560 if (sstate > prw.lowest_wake) {
2561 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
2563 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2565 acpi_SetInteger(handle, "_PSW", 0);
2566 acpi_pwr_wake_enable(handle, 0);
2568 device_printf(dev, "run_prep cleaned up for %s\n",
2576 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
2580 /* If suspending, run the sleep prep function, otherwise wake. */
2581 sstate = *(int *)context;
2582 if (AcpiGbl_SystemAwakeAndRunning)
2583 acpi_wake_sleep_prep(handle, sstate);
2585 acpi_wake_run_prep(handle, sstate);
2589 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2591 acpi_wake_prep_walk(int sstate)
2593 ACPI_HANDLE sb_handle;
2595 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) {
2596 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
2597 acpi_wake_prep, NULL, &sstate, NULL);
2602 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2604 acpi_wake_sysctl_walk(device_t dev)
2607 int error, i, numdevs;
2612 error = device_get_children(dev, &devlist, &numdevs);
2613 if (error != 0 || numdevs == 0) {
2615 kfree(devlist, M_TEMP);
2618 for (i = 0; i < numdevs; i++) {
2620 acpi_wake_sysctl_walk(child);
2621 if (!device_is_attached(child))
2623 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
2624 if (ACPI_SUCCESS(status)) {
2625 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
2626 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
2627 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
2628 acpi_wake_set_sysctl, "I", "Device set to wake the system");
2631 kfree(devlist, M_TEMP);
2638 /* Enable or disable wake from userland. */
2640 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2645 dev = (device_t)arg1;
2646 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
2648 error = sysctl_handle_int(oidp, &enable, 0, req);
2649 if (error != 0 || req->newptr == NULL)
2651 if (enable != 0 && enable != 1)
2654 return (acpi_wake_set_enable(dev, enable));
2658 /* Parse a device's _PRW into a structure. */
2660 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2663 ACPI_BUFFER prw_buffer;
2664 ACPI_OBJECT *res, *res2;
2665 int error, i, power_count;
2667 if (h == NULL || prw == NULL)
2671 * The _PRW object (7.2.9) is only required for devices that have the
2672 * ability to wake the system from a sleeping state.
2675 prw_buffer.Pointer = NULL;
2676 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2677 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2678 if (ACPI_FAILURE(status))
2680 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2683 if (!ACPI_PKG_VALID(res, 2))
2687 * Element 1 of the _PRW object:
2688 * The lowest power system sleeping state that can be entered while still
2689 * providing wake functionality. The sleeping state being entered must
2690 * be less than (i.e., higher power) or equal to this value.
2692 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2696 * Element 0 of the _PRW object:
2698 switch (res->Package.Elements[0].Type) {
2699 case ACPI_TYPE_INTEGER:
2701 * If the data type of this package element is numeric, then this
2702 * _PRW package element is the bit index in the GPEx_EN, in the
2703 * GPE blocks described in the FADT, of the enable bit that is
2704 * enabled for the wake event.
2706 prw->gpe_handle = NULL;
2707 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2710 case ACPI_TYPE_PACKAGE:
2712 * If the data type of this package element is a package, then this
2713 * _PRW package element is itself a package containing two
2714 * elements. The first is an object reference to the GPE Block
2715 * device that contains the GPE that will be triggered by the wake
2716 * event. The second element is numeric and it contains the bit
2717 * index in the GPEx_EN, in the GPE Block referenced by the
2718 * first element in the package, of the enable bit that is enabled for
2721 * For example, if this field is a package then it is of the form:
2722 * Package() {\_SB.PCI0.ISA.GPE, 2}
2724 res2 = &res->Package.Elements[0];
2725 if (!ACPI_PKG_VALID(res2, 2))
2727 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2728 if (prw->gpe_handle == NULL)
2730 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2738 /* Elements 2 to N of the _PRW object are power resources. */
2739 power_count = res->Package.Count - 2;
2740 if (power_count > ACPI_PRW_MAX_POWERRES) {
2741 kprintf("ACPI device %s has too many power resources\n", acpi_name(h));
2744 prw->power_res_count = power_count;
2745 for (i = 0; i < power_count; i++)
2746 prw->power_res[i] = res->Package.Elements[i];
2749 if (prw_buffer.Pointer != NULL)
2750 AcpiOsFree(prw_buffer.Pointer);
2755 * ACPI Event Handlers
2758 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2761 acpi_system_eventhandler_sleep(void *arg, int state)
2765 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2767 /* Check if button action is disabled. */
2768 if (state == ACPI_S_STATES_MAX + 1)
2771 /* Request that the system prepare to enter the given suspend state. */
2772 ret = acpi_ReqSleepState((struct acpi_softc *)arg, state);
2774 kprintf("acpi: request to enter state S%d failed (err %d)\n",
2781 acpi_system_eventhandler_wakeup(void *arg, int state)
2784 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2786 /* Currently, nothing to do for wakeup. */
2792 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2795 acpi_event_power_button_sleep(void *context)
2797 struct acpi_softc *sc = (struct acpi_softc *)context;
2799 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2801 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2803 return_VALUE (ACPI_INTERRUPT_HANDLED);
2807 acpi_event_power_button_wake(void *context)
2809 struct acpi_softc *sc = (struct acpi_softc *)context;
2811 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2813 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2815 return_VALUE (ACPI_INTERRUPT_HANDLED);
2819 acpi_event_sleep_button_sleep(void *context)
2821 struct acpi_softc *sc = (struct acpi_softc *)context;
2823 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2825 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2827 return_VALUE (ACPI_INTERRUPT_HANDLED);
2831 acpi_event_sleep_button_wake(void *context)
2833 struct acpi_softc *sc = (struct acpi_softc *)context;
2835 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2837 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2839 return_VALUE (ACPI_INTERRUPT_HANDLED);
2843 * XXX This static buffer is suboptimal. There is no locking so only
2844 * use this for single-threaded callers.
2847 acpi_name(ACPI_HANDLE handle)
2850 static char data[256];
2852 buf.Length = sizeof(data);
2855 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
2857 return ("(unknown)");
2861 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2862 * parts of the namespace.
2865 acpi_avoid(ACPI_HANDLE handle)
2867 char *cp, *env, *np;
2870 np = acpi_name(handle);
2873 if ((env = kgetenv("debug.acpi.avoid")) == NULL)
2876 /* Scan the avoid list checking for a match */
2879 while (*cp != 0 && isspace(*cp))
2884 while (cp[len] != 0 && !isspace(cp[len]))
2886 if (!strncmp(cp, np, len)) {
2898 * Debugging/bug-avoidance. Disable ACPI subsystem components.
2901 acpi_disabled(char *subsys)
2906 if ((env = kgetenv("debug.acpi.disabled")) == NULL)
2908 if (strcmp(env, "all") == 0) {
2913 /* Scan the disable list, checking for a match. */
2916 while (*cp != '\0' && isspace(*cp))
2921 while (cp[len] != '\0' && !isspace(cp[len]))
2923 if (strncmp(cp, subsys, len) == 0) {
2935 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
2936 * components are enabled by default. The ones that are not have to be
2937 * enabled via debug.acpi.enabled.
2940 acpi_enabled(char *subsys)
2945 if ((env = kgetenv("debug.acpi.enabled")) == NULL)
2947 if (strcmp(env, "all") == 0) {
2952 /* Scan the enable list, checking for a match. */
2955 while (*cp != '\0' && isspace(*cp))
2960 while (cp[len] != '\0' && !isspace(cp[len]))
2962 if (strncmp(cp, subsys, len) == 0) {
2974 * Control interface.
2976 * We multiplex ioctls for all participating ACPI devices here. Individual
2977 * drivers wanting to be accessible via /dev/acpi should use the
2978 * register/deregister interface to make their handlers visible.
2980 struct acpi_ioctl_hook
2982 TAILQ_ENTRY(acpi_ioctl_hook) link;
2988 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
2989 static int acpi_ioctl_hooks_initted;
2992 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
2994 struct acpi_ioctl_hook *hp;
2996 if ((hp = kmalloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
3003 if (acpi_ioctl_hooks_initted == 0) {
3004 TAILQ_INIT(&acpi_ioctl_hooks);
3005 acpi_ioctl_hooks_initted = 1;
3007 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
3014 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
3016 struct acpi_ioctl_hook *hp;
3019 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
3020 if (hp->cmd == cmd && hp->fn == fn)
3024 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
3025 kfree(hp, M_ACPIDEV);
3031 acpiopen(struct dev_open_args *ap)
3037 acpiclose(struct dev_close_args *ap)
3043 acpiioctl(struct dev_ioctl_args *ap)
3045 struct acpi_softc *sc;
3046 struct acpi_ioctl_hook *hp;
3051 sc = ap->a_head.a_dev->si_drv1;
3054 * Scan the list of registered ioctls, looking for handlers.
3057 if (acpi_ioctl_hooks_initted)
3058 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3059 if (hp->cmd == ap->a_cmd)
3064 return (hp->fn(ap->a_cmd, ap->a_data, hp->arg));
3067 * Core ioctls are not permitted for non-writable user.
3068 * Currently, other ioctls just fetch information.
3069 * Not changing system behavior.
3071 if ((ap->a_fflag & FWRITE) == 0)
3074 /* Core system ioctls. */
3075 switch (ap->a_cmd) {
3076 case ACPIIO_REQSLPSTATE:
3077 state = *(int *)ap->a_data;
3078 if (state != ACPI_STATE_S5)
3079 error = acpi_ReqSleepState(sc, state);
3081 kprintf("power off via acpi ioctl not supported\n");
3085 case ACPIIO_ACKSLPSTATE:
3088 error = *(int *)ap->a_data;
3089 error = acpi_AckSleepState(sc->acpi_clone, error);
3092 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3094 state = *(int *)ap->a_data;
3095 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
3096 if (ACPI_SUCCESS(acpi_SetSleepState(sc, state)))
3107 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3111 UINT8 state, TypeA, TypeB;
3113 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3114 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++)
3115 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
3116 sbuf_printf(&sb, "S%d ", state);
3119 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3125 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3127 char sleep_state[10];
3129 u_int new_state, old_state;
3131 old_state = *(u_int *)oidp->oid_arg1;
3132 if (old_state > ACPI_S_STATES_MAX + 1)
3133 strlcpy(sleep_state, "unknown", sizeof(sleep_state));
3135 strlcpy(sleep_state, sleep_state_names[old_state], sizeof(sleep_state));
3136 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3137 if (error == 0 && req->newptr != NULL) {
3138 new_state = ACPI_STATE_S0;
3139 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++)
3140 if (strcmp(sleep_state, sleep_state_names[new_state]) == 0)
3142 if (new_state <= ACPI_S_STATES_MAX + 1) {
3143 if (new_state != old_state)
3144 *(u_int *)oidp->oid_arg1 = new_state;
3152 /* Inform devctl(4) when we receive a Notify. */
3154 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3156 char notify_buf[16];
3157 ACPI_BUFFER handle_buf;
3160 if (subsystem == NULL)
3163 handle_buf.Pointer = NULL;
3164 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3165 status = AcpiNsHandleToPathname(h, &handle_buf);
3166 if (ACPI_FAILURE(status))
3168 ksnprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
3169 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
3170 AcpiOsFree(handle_buf.Pointer);
3175 * Support for parsing debug options from the kernel environment.
3177 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3178 * by specifying the names of the bits in the debug.acpi.layer and
3179 * debug.acpi.level environment variables. Bits may be unset by
3180 * prefixing the bit name with !.
3188 static struct debugtag dbg_layer[] = {
3189 {"ACPI_UTILITIES", ACPI_UTILITIES},
3190 {"ACPI_HARDWARE", ACPI_HARDWARE},
3191 {"ACPI_EVENTS", ACPI_EVENTS},
3192 {"ACPI_TABLES", ACPI_TABLES},
3193 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3194 {"ACPI_PARSER", ACPI_PARSER},
3195 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3196 {"ACPI_EXECUTER", ACPI_EXECUTER},
3197 {"ACPI_RESOURCES", ACPI_RESOURCES},
3198 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3199 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3200 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3201 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3203 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3204 {"ACPI_BATTERY", ACPI_BATTERY},
3205 {"ACPI_BUS", ACPI_BUS},
3206 {"ACPI_BUTTON", ACPI_BUTTON},
3207 {"ACPI_EC", ACPI_EC},
3208 {"ACPI_FAN", ACPI_FAN},
3209 {"ACPI_POWERRES", ACPI_POWERRES},
3210 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3211 {"ACPI_THERMAL", ACPI_THERMAL},
3212 {"ACPI_TIMER", ACPI_TIMER},
3213 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3217 static struct debugtag dbg_level[] = {
3218 {"ACPI_LV_INIT", ACPI_LV_INIT},
3219 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3220 {"ACPI_LV_INFO", ACPI_LV_INFO},
3221 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR},
3222 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3224 /* Trace verbosity level 1 [Standard Trace Level] */
3225 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3226 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3227 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3228 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3229 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3230 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3231 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3232 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3233 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3234 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3235 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3236 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3237 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3238 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3239 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3241 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3242 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3243 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3244 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3245 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3246 {"ACPI_LV_ALL", ACPI_LV_ALL},
3248 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3249 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3250 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3251 {"ACPI_LV_IO", ACPI_LV_IO},
3252 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3253 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3255 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3256 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
3257 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
3258 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
3259 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
3260 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
3265 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
3277 while (*ep && !isspace(*ep))
3288 for (i = 0; tag[i].name != NULL; i++) {
3289 if (!strncmp(cp, tag[i].name, l)) {
3291 *flag |= tag[i].value;
3293 *flag &= ~tag[i].value;
3301 acpi_set_debugging(void *junk)
3303 char *layer, *level;
3310 layer = kgetenv("debug.acpi.layer");
3311 level = kgetenv("debug.acpi.level");
3312 if (layer == NULL && level == NULL)
3315 kprintf("ACPI set debug");
3316 if (layer != NULL) {
3317 if (strcmp("NONE", layer) != 0)
3318 kprintf(" layer '%s'", layer);
3319 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
3322 if (level != NULL) {
3323 if (strcmp("NONE", level) != 0)
3324 kprintf(" level '%s'", level);
3325 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
3331 SYSINIT(acpi_debugging, SI_BOOT1_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3335 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
3338 struct debugtag *tag;
3341 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
3343 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
3344 tag = &dbg_layer[0];
3345 dbg = &AcpiDbgLayer;
3347 tag = &dbg_level[0];
3348 dbg = &AcpiDbgLevel;
3351 /* Get old values if this is a get request. */
3352 ACPI_SERIAL_BEGIN(acpi);
3354 sbuf_cpy(&sb, "NONE");
3355 } else if (req->newptr == NULL) {
3356 for (; tag->name != NULL; tag++) {
3357 if ((*dbg & tag->value) == tag->value)
3358 sbuf_printf(&sb, "%s ", tag->name);
3364 /* Copy out the old values to the user. */
3365 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
3368 /* If the user is setting a string, parse it. */
3369 if (error == 0 && req->newptr != NULL) {
3371 ksetenv((char *)oidp->oid_arg1, (char *)req->newptr);
3372 acpi_set_debugging(NULL);
3374 ACPI_SERIAL_END(acpi);
3379 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
3380 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
3381 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
3382 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3383 #endif /* ACPI_DEBUG */
3386 acpi_pm_func(u_long cmd, void *arg, ...)
3388 int state, acpi_state;
3390 struct acpi_softc *sc;
3395 case POWER_CMD_SUSPEND:
3396 sc = (struct acpi_softc *)arg;
3403 state = va_arg(ap, int);
3407 case POWER_SLEEP_STATE_STANDBY:
3408 acpi_state = sc->acpi_standby_sx;
3410 case POWER_SLEEP_STATE_SUSPEND:
3411 acpi_state = sc->acpi_suspend_sx;
3413 case POWER_SLEEP_STATE_HIBERNATE:
3414 acpi_state = ACPI_STATE_S4;
3421 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
3434 acpi_pm_register(void *arg)
3436 if (!cold || resource_disabled("acpi", 0))
3439 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3442 SYSINIT(power, SI_BOOT2_KLD, SI_ORDER_ANY, acpi_pm_register, 0);