2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
4 * Copyright (c) 2000, 2001 Michael Smith
5 * Copyright (c) 2000 BSDi
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/sys/dev/acpica/acpi.c,v 1.157 2004/06/05 09:56:04 njl Exp $
30 * $DragonFly: src/sys/dev/acpica5/acpi.c,v 1.14 2005/09/23 02:28:50 y0netan1 Exp $
34 #include <sys/param.h>
35 #include <sys/kernel.h>
37 #include <sys/fcntl.h>
38 #include <sys/malloc.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/thread2.h>
50 #include <machine/clock.h>
51 #include <machine/globaldata.h>
52 #include <machine/resource.h>
53 #include <machine/bus.h>
55 #include <bus/isa/isavar.h>
58 #include <dev/acpica5/acpivar.h>
59 #include <dev/acpica5/acpiio.h>
62 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
64 /* Hooks for the ACPI CA debugging infrastructure */
65 #define _COMPONENT ACPI_BUS
66 ACPI_MODULE_NAME("ACPI")
68 static d_open_t acpiopen;
69 static d_close_t acpiclose;
70 static d_ioctl_t acpiioctl;
72 #define CDEV_MAJOR 152
73 static struct cdevsw acpi_cdevsw = {
80 .old_close = acpiclose,
81 .old_ioctl = acpiioctl
84 #if __FreeBSD_version >= 500000
85 struct mtx acpi_mutex;
94 #define ACPI_OEM_REV_ANY 0
96 static struct acpi_quirks acpi_quirks_table[] = {
98 /* Bad PCI routing table. Used on some SuperMicro boards. */
99 { "PTLTD ", 0x06040000, "pci_link" },
105 static int acpi_modevent(struct module *mod, int event, void *junk);
106 static void acpi_identify(driver_t *driver, device_t parent);
107 static int acpi_probe(device_t dev);
108 static int acpi_attach(device_t dev);
109 static int acpi_shutdown(device_t dev);
110 static void acpi_quirks_set(void);
111 static device_t acpi_add_child(device_t bus, int order, const char *name,
113 static int acpi_print_child(device_t bus, device_t child);
114 static int acpi_read_ivar(device_t dev, device_t child, int index,
116 static int acpi_write_ivar(device_t dev, device_t child, int index,
118 static int acpi_set_resource(device_t dev, device_t child, int type,
119 int rid, u_long start, u_long count);
120 static int acpi_get_resource(device_t dev, device_t child, int type,
121 int rid, u_long *startp, u_long *countp);
122 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
123 int type, int *rid, u_long start, u_long end,
124 u_long count, u_int flags);
125 static int acpi_release_resource(device_t bus, device_t child, int type,
126 int rid, struct resource *r);
127 static uint32_t acpi_isa_get_logicalid(device_t dev);
128 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
129 static int acpi_isa_pnp_probe(device_t bus, device_t child,
130 struct isa_pnp_id *ids);
131 static void acpi_probe_children(device_t bus);
132 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
133 void *context, void **status);
134 static void acpi_shutdown_pre_sync(void *arg, int howto);
135 static void acpi_shutdown_final(void *arg, int howto);
136 static void acpi_shutdown_poweroff(void *arg);
137 static void acpi_enable_fixed_events(struct acpi_softc *sc);
138 static int acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw);
139 static ACPI_STATUS acpi_wake_limit(ACPI_HANDLE h, UINT32 level, void *context,
141 static int acpi_wake_limit_walk(int sstate);
142 static int acpi_wake_sysctl_walk(device_t dev);
143 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
144 static void acpi_system_eventhandler_sleep(void *arg, int state);
145 static void acpi_system_eventhandler_wakeup(void *arg, int state);
146 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
147 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
148 static int acpi_pm_func(u_long cmd, void *arg, ...);
149 static int acpi_child_location_str_method(device_t acdev, device_t child,
150 char *buf, size_t buflen);
151 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
152 char *buf, size_t buflen);
154 static device_method_t acpi_methods[] = {
155 /* Device interface */
156 DEVMETHOD(device_identify, acpi_identify),
157 DEVMETHOD(device_probe, acpi_probe),
158 DEVMETHOD(device_attach, acpi_attach),
159 DEVMETHOD(device_shutdown, acpi_shutdown),
160 DEVMETHOD(device_detach, bus_generic_detach),
161 DEVMETHOD(device_suspend, bus_generic_suspend),
162 DEVMETHOD(device_resume, bus_generic_resume),
165 DEVMETHOD(bus_add_child, acpi_add_child),
166 DEVMETHOD(bus_print_child, acpi_print_child),
167 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
168 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
169 DEVMETHOD(bus_set_resource, acpi_set_resource),
170 DEVMETHOD(bus_get_resource, acpi_get_resource),
171 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
172 DEVMETHOD(bus_release_resource, acpi_release_resource),
173 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
174 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
175 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
176 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
177 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
178 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
179 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
182 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
187 static driver_t acpi_driver = {
190 sizeof(struct acpi_softc),
193 static devclass_t acpi_devclass;
194 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
195 MODULE_VERSION(acpi, 1);
197 static const char* sleep_state_names[] = {
198 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
200 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RW, NULL, "ACPI debugging");
201 static char acpi_ca_version[12];
202 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
203 acpi_ca_version, 0, "Version of Intel ACPI-CA");
206 * Allow override of whether methods execute in parallel or not.
207 * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
208 * errors for AML that really can't handle parallel method execution.
209 * It is off by default since this breaks recursive methods and
210 * some IBMs use such code.
212 static int acpi_serialize_methods;
213 TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
216 * ACPI can only be loaded as a module by the loader; activating it after
217 * system bootstrap time is not useful, and can be fatal to the system.
218 * It also cannot be unloaded, since the entire system bus heirarchy hangs
222 acpi_modevent(struct module *mod, int event, void *junk)
227 printf("The ACPI driver cannot be loaded after boot.\n");
232 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
242 * Perform early initialization.
250 static int error, started = 0;
252 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
255 return_VALUE (error);
258 #if __FreeBSD_version >= 500000
259 /* Initialise the ACPI mutex */
260 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
264 * Set the globals from our tunables. This is needed because ACPI-CA
265 * uses UINT8 for some values and we have no tunable_byte.
267 AcpiGbl_AllMethodsSerialized = (UINT8)acpi_serialize_methods;
269 /* Start up the ACPI CA subsystem. */
271 debugpoint = getenv("debug.acpi.debugger");
273 if (!strcmp(debugpoint, "init"))
274 acpi_EnterDebugger();
278 if (ACPI_FAILURE(error = AcpiInitializeSubsystem())) {
279 printf("ACPI: initialisation failed: %s\n", AcpiFormatException(error));
280 return_VALUE (error);
283 debugpoint = getenv("debug.acpi.debugger");
285 if (!strcmp(debugpoint, "tables"))
286 acpi_EnterDebugger();
291 if (ACPI_FAILURE(error = AcpiLoadTables())) {
292 printf("ACPI: table load failed: %s\n", AcpiFormatException(error));
296 /* Set up any quirks we have for this XSDT. */
298 if (acpi_disabled("acpi"))
299 return_VALUE (AE_ERROR);
301 return_VALUE (AE_OK);
305 * Detect ACPI, perform early initialisation
308 acpi_identify(driver_t *driver, device_t parent)
312 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
317 /* Check that we haven't been disabled with a hint. */
318 if (resource_disabled("acpi", 0))
321 /* Make sure we're not being doubly invoked. */
322 if (device_find_child(parent, "acpi", 0) != NULL)
325 /* Initialize ACPI-CA. */
326 if (ACPI_FAILURE(acpi_Startup()))
329 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%#x", ACPI_CA_VERSION);
331 /* Attach the actual ACPI device. */
332 if ((child = BUS_ADD_CHILD(parent, 0, "acpi", 0)) == NULL) {
333 device_printf(parent, "ACPI: could not attach\n");
339 * Fetch some descriptive data from ACPI to put in our attach message
342 acpi_probe(device_t dev)
344 ACPI_TABLE_HEADER th;
351 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
353 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
354 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
356 device_printf(dev, "Other PM system enabled.\n");
362 if (ACPI_FAILURE(status = AcpiGetTableHeader(ACPI_TABLE_XSDT, 1, &th))) {
363 device_printf(dev, "couldn't get XSDT header: %s\n",
364 AcpiFormatException(status));
367 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
368 sbuf_bcat(&sb, th.OemId, 6);
371 sbuf_bcat(&sb, th.OemTableId, 8);
374 device_set_desc_copy(dev, sbuf_data(&sb));
383 acpi_attach(device_t dev)
385 struct acpi_softc *sc;
396 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
398 sc = device_get_softc(dev);
399 bzero(sc, sizeof(*sc));
401 callout_init(&sc->acpi_sleep_timer);
404 debugpoint = getenv("debug.acpi.debugger");
406 if (!strcmp(debugpoint, "spaces"))
407 acpi_EnterDebugger();
412 /* Install the default address space handlers. */
414 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
415 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
416 if (ACPI_FAILURE(status)) {
417 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
418 AcpiFormatException(status));
421 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
422 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
423 if (ACPI_FAILURE(status)) {
424 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
425 AcpiFormatException(status));
428 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
429 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
430 if (ACPI_FAILURE(status)) {
431 device_printf(dev, "could not initialise PciConfig handler: %s\n",
432 AcpiFormatException(status));
437 * Bring ACPI fully online.
439 * Note that some systems (specifically, those with namespace evaluation
440 * issues that require the avoidance of parts of the namespace) must
441 * avoid running _INI and _STA on everything, as well as dodging the final
444 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
445 * For avoiding portions of the namespace without totally disabling _INI
446 * and _STA, use "debug.acpi.avoid.paths".
448 * XXX We should arrange for the object init pass after we have attached
449 * all our child devices, but on many systems it works here.
452 debugpoint = getenv("debug.acpi.debugger");
454 if (!strcmp(debugpoint, "enable"))
455 acpi_EnterDebugger();
460 if (testenv("debug.acpi.avoid"))
461 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
462 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
463 device_printf(dev, "Could not enable ACPI: %s\n",
464 AcpiFormatException(status));
469 * Call the ECDT probe function to provide EC functionality before
470 * the namespace has been evaluated.
472 acpi_ec_ecdt_probe(dev);
474 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
475 device_printf(dev, "Could not initialize ACPI objects: %s\n",
476 AcpiFormatException(status));
481 * Setup our sysctl tree.
483 * XXX: This doesn't check to make sure that none of these fail.
485 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
486 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
487 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
488 device_get_name(dev), CTLFLAG_RD, 0, "");
489 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
490 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
491 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
492 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
493 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
494 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
495 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
496 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
497 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
498 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
499 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
500 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
501 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
502 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
503 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
504 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
505 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
506 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
507 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
508 OID_AUTO, "sleep_delay", CTLFLAG_RD | CTLFLAG_RW,
509 &sc->acpi_sleep_delay, 0, "sleep delay");
510 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
511 OID_AUTO, "s4bios", CTLFLAG_RD | CTLFLAG_RW,
512 &sc->acpi_s4bios, 0, "S4BIOS mode");
513 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
514 OID_AUTO, "verbose", CTLFLAG_RD | CTLFLAG_RW,
515 &sc->acpi_verbose, 0, "verbose mode");
516 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
517 OID_AUTO, "disable_on_poweroff", CTLFLAG_RD | CTLFLAG_RW,
518 &sc->acpi_disable_on_poweroff, 0, "ACPI subsystem disable on poweroff");
521 * Default to 1 second before sleeping to give some machines time to
524 sc->acpi_sleep_delay = 1;
525 sc->acpi_disable_on_poweroff = 0;
527 sc->acpi_verbose = 1;
528 if ((env = getenv("hw.acpi.verbose")) && strcmp(env, "0")) {
529 sc->acpi_verbose = 1;
533 /* Only enable S4BIOS by default if the FACS says it is available. */
534 if (AcpiGbl_FACS->S4Bios_f != 0)
538 * Dispatch the default sleep state to devices. The lid switch is set
539 * to NONE by default to avoid surprising users.
541 sc->acpi_power_button_sx = ACPI_STATE_S5;
542 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
543 sc->acpi_standby_sx = ACPI_STATE_S1;
544 sc->acpi_suspend_sx = ACPI_STATE_S3;
546 /* Pick the first valid sleep state for the sleep button default. */
547 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
548 for (state = ACPI_STATE_S1; state < ACPI_STATE_S5; state++)
549 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
550 sc->acpi_sleep_button_sx = state;
554 acpi_enable_fixed_events(sc);
557 * Scan the namespace and attach/initialise children.
560 debugpoint = getenv("debug.acpi.debugger");
562 if (!strcmp(debugpoint, "probe"))
563 acpi_EnterDebugger();
568 /* Register our shutdown handlers */
569 EVENTHANDLER_REGISTER(shutdown_pre_sync, acpi_shutdown_pre_sync, sc,
571 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
575 * Register our acpi event handlers.
576 * XXX should be configurable eg. via userland policy manager.
578 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
579 sc, ACPI_EVENT_PRI_LAST);
580 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
581 sc, ACPI_EVENT_PRI_LAST);
583 /* Flag our initial states. */
584 sc->acpi_enabled = 1;
585 sc->acpi_sstate = ACPI_STATE_S0;
586 sc->acpi_sleep_disabled = 0;
588 /* Create the control device */
589 cdevsw_add(&acpi_cdevsw, 0, 0);
590 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
592 sc->acpi_dev_t->si_drv1 = sc;
595 debugpoint = getenv("debug.acpi.debugger");
597 if (strcmp(debugpoint, "running") == 0)
598 acpi_EnterDebugger();
603 if ((error = acpi_task_thread_init()))
606 if ((error = acpi_machdep_init(dev)))
609 /* Register ACPI again to pass the correct argument of pm_func. */
610 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
612 if (!acpi_disabled("bus"))
613 acpi_probe_children(dev);
619 return_VALUE (error);
623 acpi_shutdown(device_t dev)
625 /* Allow children to shutdown first. */
626 bus_generic_shutdown(dev);
628 /* Disable all wake GPEs not appropriate for reboot/poweroff. */
629 acpi_wake_limit_walk(ACPI_STATE_S5);
636 XSDT_DESCRIPTOR *xsdt;
637 struct acpi_quirks *quirk;
642 * If the user loaded a custom table or disabled "quirks", leave
643 * the settings alone.
646 if ((env = getenv("acpi_dsdt_load")) != NULL) {
647 /* XXX No strcasecmp but this is good enough. */
648 if (*env == 'Y' || *env == 'y')
652 if ((env = getenv("debug.acpi.disabled")) != NULL) {
653 if (strstr("quirks", env) != NULL)
659 * Search through our quirk table and concatenate the disabled
660 * values with whatever we find.
663 for (quirk = acpi_quirks_table; quirk->OemId; quirk++) {
664 if (!strncmp(xsdt->OemId, quirk->OemId, strlen(quirk->OemId)) &&
665 (xsdt->OemRevision == quirk->OemRevision ||
666 quirk->OemRevision == ACPI_OEM_REV_ANY)) {
667 len += strlen(quirk->value) + 2;
668 if ((tmp = malloc(len, M_TEMP, M_NOWAIT)) == NULL)
670 sprintf(tmp, "%s %s", env ? env : "", quirk->value);
672 setenv("debug.acpi.disabled", tmp);
685 * Handle a new device being added
688 acpi_add_child(device_t bus, int order, const char *name, int unit)
690 struct acpi_device *ad;
693 ad = malloc(sizeof(*ad), M_ACPIDEV, M_INTWAIT | M_ZERO);
695 resource_list_init(&ad->ad_rl);
697 child = device_add_child_ordered(bus, order, name, unit);
699 device_set_ivars(child, ad);
704 acpi_print_child(device_t bus, device_t child)
706 struct acpi_device *adev = device_get_ivars(child);
707 struct resource_list *rl = &adev->ad_rl;
710 retval += bus_print_child_header(bus, child);
711 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
712 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
713 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
714 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
715 retval += bus_print_child_footer(bus, child);
720 /* Location hint for devctl(8) */
722 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
725 struct acpi_device *dinfo = device_get_ivars(child);
727 if (dinfo->ad_handle)
728 snprintf(buf, buflen, "path=%s", acpi_name(dinfo->ad_handle));
730 snprintf(buf, buflen, "magic=unknown");
734 /* PnP information for devctl(8) */
736 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
739 ACPI_BUFFER adbuf = {ACPI_ALLOCATE_BUFFER, NULL};
740 ACPI_DEVICE_INFO *adinfo;
741 struct acpi_device *dinfo = device_get_ivars(child);
745 error = AcpiGetObjectInfo(dinfo->ad_handle, &adbuf);
746 adinfo = (ACPI_DEVICE_INFO *) adbuf.Pointer;
749 snprintf(buf, buflen, "Unknown");
751 snprintf(buf, buflen, "_HID=%s _UID=%lu",
752 (adinfo->Valid & ACPI_VALID_HID) ?
753 adinfo->HardwareId.Value : "UNKNOWN",
754 (adinfo->Valid & ACPI_VALID_UID) ?
755 strtoul(adinfo->UniqueId.Value, &end, 10) : 0);
764 * Handle per-device ivars
767 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
769 struct acpi_device *ad;
771 if ((ad = device_get_ivars(child)) == NULL) {
772 printf("device has no ivars\n");
776 /* ACPI and ISA compatibility ivars */
778 case ACPI_IVAR_HANDLE:
779 *(ACPI_HANDLE *)result = ad->ad_handle;
781 case ACPI_IVAR_MAGIC:
782 *(int *)result = ad->ad_magic;
784 case ACPI_IVAR_PRIVATE:
785 *(void **)result = ad->ad_private;
787 case ISA_IVAR_VENDORID:
788 case ISA_IVAR_SERIAL:
789 case ISA_IVAR_COMPATID:
792 case ISA_IVAR_LOGICALID:
793 *(int *)result = acpi_isa_get_logicalid(child);
803 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
805 struct acpi_device *ad;
807 if ((ad = device_get_ivars(child)) == NULL) {
808 printf("device has no ivars\n");
813 case ACPI_IVAR_HANDLE:
814 ad->ad_handle = (ACPI_HANDLE)value;
816 case ACPI_IVAR_MAGIC:
817 ad->ad_magic = (int)value;
819 case ACPI_IVAR_PRIVATE:
820 ad->ad_private = (void *)value;
823 panic("bad ivar write request (%d)", index);
831 * Handle child resource allocation/removal
834 acpi_set_resource(device_t dev, device_t child, int type, int rid,
835 u_long start, u_long count)
837 struct acpi_device *ad = device_get_ivars(child);
838 struct resource_list *rl = &ad->ad_rl;
840 resource_list_add(rl, type, rid, start, start + count -1, count);
846 acpi_get_resource(device_t dev, device_t child, int type, int rid,
847 u_long *startp, u_long *countp)
849 struct acpi_device *ad = device_get_ivars(child);
850 struct resource_list *rl = &ad->ad_rl;
851 struct resource_list_entry *rle;
853 rle = resource_list_find(rl, type, rid);
858 *startp = rle->start;
860 *countp = rle->count;
865 static struct resource *
866 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
867 u_long start, u_long end, u_long count, u_int flags)
869 struct acpi_device *ad = device_get_ivars(child);
870 struct resource_list *rl = &ad->ad_rl;
872 return (resource_list_alloc(rl, bus, child, type, rid, start, end, count,
877 acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r)
879 struct acpi_device *ad = device_get_ivars(child);
880 struct resource_list *rl = &ad->ad_rl;
882 return (resource_list_release(rl, bus, child, type, rid, r));
885 /* Allocate an IO port or memory resource, given its GAS. */
887 acpi_bus_alloc_gas(device_t dev, int *rid, ACPI_GENERIC_ADDRESS *gas)
891 if (gas == NULL || !ACPI_VALID_ADDRESS(gas->Address) ||
892 gas->RegisterBitWidth < 8)
895 switch (gas->AddressSpaceId) {
896 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
897 type = SYS_RES_MEMORY;
899 case ACPI_ADR_SPACE_SYSTEM_IO:
900 type = SYS_RES_IOPORT;
906 bus_set_resource(dev, type, *rid, gas->Address, gas->RegisterBitWidth / 8);
907 return (bus_alloc_resource_any(dev, type, rid, RF_ACTIVE));
911 * Handle ISA-like devices probing for a PnP ID to match.
913 #define PNP_EISAID(s) \
914 ((((s[0] - '@') & 0x1f) << 2) \
915 | (((s[1] - '@') & 0x18) >> 3) \
916 | (((s[1] - '@') & 0x07) << 13) \
917 | (((s[2] - '@') & 0x1f) << 8) \
918 | (PNP_HEXTONUM(s[4]) << 16) \
919 | (PNP_HEXTONUM(s[3]) << 20) \
920 | (PNP_HEXTONUM(s[6]) << 24) \
921 | (PNP_HEXTONUM(s[5]) << 28))
924 acpi_isa_get_logicalid(device_t dev)
926 ACPI_DEVICE_INFO *devinfo;
933 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
937 buf.Length = ACPI_ALLOCATE_BUFFER;
941 /* Fetch and validate the HID. */
942 if ((h = acpi_get_handle(dev)) == NULL)
944 error = AcpiGetObjectInfo(h, &buf);
945 if (ACPI_FAILURE(error))
947 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
949 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
950 pnpid = PNP_EISAID(devinfo->HardwareId.Value);
953 if (buf.Pointer != NULL)
954 AcpiOsFree(buf.Pointer);
956 return_VALUE (pnpid);
960 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
962 ACPI_DEVICE_INFO *devinfo;
970 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
975 buf.Length = ACPI_ALLOCATE_BUFFER;
979 /* Fetch and validate the CID */
980 if ((h = acpi_get_handle(dev)) == NULL)
982 error = AcpiGetObjectInfo(h, &buf);
983 if (ACPI_FAILURE(error))
985 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
986 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
989 if (devinfo->CompatibilityId.Count < count)
990 count = devinfo->CompatibilityId.Count;
991 for (i = 0; i < count; i++) {
992 if (strncmp(devinfo->CompatibilityId.Id[i].Value, "PNP", 3) != 0)
994 *pnpid++ = PNP_EISAID(devinfo->CompatibilityId.Id[i].Value);
999 if (buf.Pointer != NULL)
1000 AcpiOsFree(buf.Pointer);
1002 return_VALUE (valid);
1006 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1008 int result, cid_count, i;
1009 uint32_t lid, cids[8];
1011 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1014 * ISA-style drivers attached to ACPI may persist and
1015 * probe manually if we return ENOENT. We never want
1016 * that to happen, so don't ever return it.
1020 /* Scan the supplied IDs for a match */
1021 lid = acpi_isa_get_logicalid(child);
1022 cid_count = acpi_isa_get_compatid(child, cids, 8);
1023 while (ids && ids->ip_id) {
1024 if (lid == ids->ip_id) {
1028 for (i = 0; i < cid_count; i++) {
1029 if (cids[i] == ids->ip_id) {
1038 return_VALUE (result);
1042 * Scan relevant portions of the ACPI namespace and attach child devices.
1044 * Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and
1045 * \_SB_ scopes, and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec.
1048 acpi_probe_children(device_t bus)
1052 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL};
1055 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1058 /* Create any static children by calling device identify methods. */
1059 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1060 bus_generic_probe(bus);
1063 * Scan the namespace and insert placeholders for all the devices that
1066 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1067 * we want to create nodes for all devices, not just those that are
1068 * currently present. (This assumes that we don't want to create/remove
1069 * devices as they appear, which might be smarter.)
1071 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1072 for (i = 0; scopes[i] != NULL; i++) {
1073 status = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent);
1074 if (ACPI_SUCCESS(status)) {
1075 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, acpi_probe_child,
1081 * Scan all of the child devices we have created and let them probe/attach.
1083 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1084 bus_generic_attach(bus);
1087 * Some of these children may have attached others as part of their attach
1088 * process (eg. the root PCI bus driver), so rescan.
1090 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1091 bus_generic_attach(bus);
1093 /* Attach wake sysctls. */
1094 acpi_wake_sysctl_walk(bus);
1096 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1101 * Evaluate a child device and determine whether we might attach a device to
1105 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1107 ACPI_OBJECT_TYPE type;
1108 device_t child, bus = (device_t)context;
1110 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1112 /* Skip this device if we think we'll have trouble with it. */
1113 if (acpi_avoid(handle)) {
1114 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "not scanning '%s'\n",
1115 acpi_name(handle)));
1116 return_ACPI_STATUS (AE_OK);
1119 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1121 case ACPI_TYPE_DEVICE:
1122 case ACPI_TYPE_PROCESSOR:
1123 case ACPI_TYPE_THERMAL:
1124 case ACPI_TYPE_POWER:
1125 if (acpi_disabled("children"))
1129 * Create a placeholder device for this node. Sort the placeholder
1130 * so that the probe/attach passes will run breadth-first.
1132 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n",
1133 acpi_name(handle)));
1134 child = BUS_ADD_CHILD(bus, level * 10, NULL, -1);
1137 acpi_set_handle(child, handle);
1139 /* Check if the device can generate wake events. */
1140 if (ACPI_SUCCESS(AcpiEvaluateObject(handle, "_PRW", NULL, NULL)))
1141 device_set_flags(child, ACPI_FLAG_WAKE_CAPABLE);
1144 * Check that the device is present. If it's not present,
1145 * leave it disabled (so that we have a device_t attached to
1146 * the handle, but we don't probe it).
1148 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1149 device_disable(child);
1154 * Get the device's resource settings and attach them.
1155 * Note that if the device has _PRS but no _CRS, we need
1156 * to decide when it's appropriate to try to configure the
1157 * device. Ignore the return value here; it's OK for the
1158 * device not to have any resources.
1160 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
1162 /* If we're debugging, probe/attach now rather than later */
1163 ACPI_DEBUG_EXEC(device_probe_and_attach(child));
1168 return_ACPI_STATUS (AE_OK);
1172 acpi_shutdown_pre_sync(void *arg, int howto)
1174 struct acpi_softc *sc = arg;
1179 * Disable all ACPI events before soft off, otherwise the system
1180 * will be turned on again on some laptops.
1182 * XXX this should probably be restricted to masking some events just
1183 * before powering down, since we may still need ACPI during the
1186 if (sc->acpi_disable_on_poweroff)
1191 acpi_shutdown_final(void *arg, int howto)
1197 * If powering off, run the actual shutdown code on each processor.
1198 * It will only perform the shutdown on the BSP. Some chipsets do
1199 * not power off the system correctly if called from an AP.
1201 if ((howto & RB_POWEROFF) != 0) {
1202 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1203 if (ACPI_FAILURE(status)) {
1204 printf("AcpiEnterSleepStatePrep failed - %s\n",
1205 AcpiFormatException(status));
1208 printf("Powering system off using ACPI\n");
1209 acpi_shutdown_poweroff(NULL);
1211 printf("Shutting down ACPI\n");
1217 * Since this function may be called with locks held or in an unknown
1218 * context, it cannot allocate memory, acquire locks, sleep, etc.
1221 acpi_shutdown_poweroff(void *arg)
1227 /* Only attempt to power off if this is the BSP (cpuid 0). */
1228 if (mdcpu->mi.gd_cpuid != 0)
1231 ACPI_DISABLE_IRQS();
1232 status = AcpiEnterSleepState(ACPI_STATE_S5);
1233 if (ACPI_FAILURE(status)) {
1234 printf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1237 printf("ACPI power-off failed - timeout\n");
1242 acpi_enable_fixed_events(struct acpi_softc *sc)
1244 static int first_time = 1;
1248 /* Enable and clear fixed events and install handlers. */
1249 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->PwrButton == 0) {
1250 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1251 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1252 acpi_event_power_button_sleep, sc);
1254 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1256 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->SleepButton == 0) {
1257 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1258 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1259 acpi_event_sleep_button_sleep, sc);
1261 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1268 * Returns true if the device is actually present and should
1269 * be attached to. This requires the present, enabled, UI-visible
1270 * and diagnostics-passed bits to be set.
1273 acpi_DeviceIsPresent(device_t dev)
1275 ACPI_DEVICE_INFO *devinfo;
1284 if ((h = acpi_get_handle(dev)) == NULL)
1287 buf.Length = ACPI_ALLOCATE_BUFFER;
1288 error = AcpiGetObjectInfo(h, &buf);
1289 if (ACPI_FAILURE(error))
1291 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1293 /* If no _STA method, must be present */
1294 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1297 /* Return true for 'present' and 'functioning' */
1298 if ((devinfo->CurrentStatus & 0x9) == 0x9)
1301 AcpiOsFree(buf.Pointer);
1306 * Returns true if the battery is actually present and inserted.
1309 acpi_BatteryIsPresent(device_t dev)
1311 ACPI_DEVICE_INFO *devinfo;
1320 if ((h = acpi_get_handle(dev)) == NULL)
1323 buf.Length = ACPI_ALLOCATE_BUFFER;
1324 error = AcpiGetObjectInfo(h, &buf);
1325 if (ACPI_FAILURE(error))
1327 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1329 /* If no _STA method, must be present */
1330 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1333 /* Return true for 'present' and 'functioning' */
1334 if ((devinfo->CurrentStatus & 0x19) == 0x19)
1337 AcpiOsFree(buf.Pointer);
1342 * Match a HID string against a device
1345 acpi_MatchHid(device_t dev, char *hid)
1347 ACPI_DEVICE_INFO *devinfo;
1358 if ((h = acpi_get_handle(dev)) == NULL)
1361 buf.Length = ACPI_ALLOCATE_BUFFER;
1362 error = AcpiGetObjectInfo(h, &buf);
1363 if (ACPI_FAILURE(error))
1365 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1367 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
1368 strcmp(hid, devinfo->HardwareId.Value) == 0)
1370 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
1371 for (i = 0; i < devinfo->CompatibilityId.Count; i++) {
1372 if (strcmp(hid, devinfo->CompatibilityId.Id[i].Value) == 0) {
1379 AcpiOsFree(buf.Pointer);
1384 * Return the handle of a named object within our scope, ie. that of (parent)
1385 * or one if its parents.
1388 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1395 /* Walk back up the tree to the root */
1397 status = AcpiGetHandle(parent, path, &r);
1398 if (ACPI_SUCCESS(status)) {
1402 if (status != AE_NOT_FOUND)
1404 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1405 return (AE_NOT_FOUND);
1410 /* Find the difference between two PM tick counts. */
1412 acpi_TimerDelta(uint32_t end, uint32_t start)
1417 delta = end - start;
1418 else if (AcpiGbl_FADT->TmrValExt == 0)
1419 delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
1421 delta = ((0xFFFFFFFF - start) + end + 1);
1426 * Allocate a buffer with a preset data size.
1429 acpi_AllocBuffer(int size)
1433 buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_INTWAIT);
1435 buf->Pointer = (void *)(buf + 1);
1440 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
1443 ACPI_OBJECT_LIST args;
1447 arg1.Type = ACPI_TYPE_INTEGER;
1448 arg1.Integer.Value = number;
1450 args.Pointer = &arg1;
1452 return (AcpiEvaluateObject(handle, path, &args, NULL));
1456 * Evaluate a path that should return an integer.
1459 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
1468 handle = ACPI_ROOT_OBJECT;
1471 * Assume that what we've been pointed at is an Integer object, or
1472 * a method that will return an Integer.
1474 buf.Pointer = ¶m;
1475 buf.Length = sizeof(param);
1476 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1477 if (ACPI_SUCCESS(status)) {
1478 if (param.Type == ACPI_TYPE_INTEGER)
1479 *number = param.Integer.Value;
1485 * In some applications, a method that's expected to return an Integer
1486 * may instead return a Buffer (probably to simplify some internal
1487 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1488 * convert it into an Integer as best we can.
1492 if (status == AE_BUFFER_OVERFLOW) {
1493 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
1494 status = AE_NO_MEMORY;
1496 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1497 if (ACPI_SUCCESS(status))
1498 status = acpi_ConvertBufferToInteger(&buf, number);
1499 AcpiOsFree(buf.Pointer);
1506 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
1512 p = (ACPI_OBJECT *)bufp->Pointer;
1513 if (p->Type == ACPI_TYPE_INTEGER) {
1514 *number = p->Integer.Value;
1517 if (p->Type != ACPI_TYPE_BUFFER)
1519 if (p->Buffer.Length > sizeof(int))
1520 return (AE_BAD_DATA);
1523 val = p->Buffer.Pointer;
1524 for (i = 0; i < p->Buffer.Length; i++)
1525 *number += val[i] << (i * 8);
1530 * Iterate over the elements of an a package object, calling the supplied
1531 * function for each element.
1533 * XXX possible enhancement might be to abort traversal on error.
1536 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
1537 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
1542 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
1543 return (AE_BAD_PARAMETER);
1545 /* Iterate over components */
1547 comp = pkg->Package.Elements;
1548 for (; i < pkg->Package.Count; i++, comp++)
1555 * Find the (index)th resource object in a set.
1558 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
1563 rp = (ACPI_RESOURCE *)buf->Pointer;
1567 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
1568 return (AE_BAD_PARAMETER);
1570 /* Check for terminator */
1571 if (rp->Id == ACPI_RSTYPE_END_TAG || rp->Length == 0)
1572 return (AE_NOT_FOUND);
1573 rp = ACPI_NEXT_RESOURCE(rp);
1582 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
1584 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
1585 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
1586 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
1589 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
1592 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
1597 /* Initialise the buffer if necessary. */
1598 if (buf->Pointer == NULL) {
1599 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
1600 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
1601 return (AE_NO_MEMORY);
1602 rp = (ACPI_RESOURCE *)buf->Pointer;
1603 rp->Id = ACPI_RSTYPE_END_TAG;
1610 * Scan the current buffer looking for the terminator.
1611 * This will either find the terminator or hit the end
1612 * of the buffer and return an error.
1614 rp = (ACPI_RESOURCE *)buf->Pointer;
1616 /* Range check, don't go outside the buffer */
1617 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
1618 return (AE_BAD_PARAMETER);
1619 if (rp->Id == ACPI_RSTYPE_END_TAG || rp->Length == 0)
1621 rp = ACPI_NEXT_RESOURCE(rp);
1625 * Check the size of the buffer and expand if required.
1628 * size of existing resources before terminator +
1629 * size of new resource and header +
1630 * size of terminator.
1632 * Note that this loop should really only run once, unless
1633 * for some reason we are stuffing a *really* huge resource.
1635 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
1636 res->Length + ACPI_RESOURCE_LENGTH_NO_DATA +
1637 ACPI_RESOURCE_LENGTH) >= buf->Length) {
1638 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
1639 return (AE_NO_MEMORY);
1640 bcopy(buf->Pointer, newp, buf->Length);
1641 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
1642 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
1643 AcpiOsFree(buf->Pointer);
1644 buf->Pointer = newp;
1645 buf->Length += buf->Length;
1648 /* Insert the new resource. */
1649 bcopy(res, rp, res->Length + ACPI_RESOURCE_LENGTH_NO_DATA);
1651 /* And add the terminator. */
1652 rp = ACPI_NEXT_RESOURCE(rp);
1653 rp->Id = ACPI_RSTYPE_END_TAG;
1660 * Set interrupt model.
1663 acpi_SetIntrModel(int model)
1665 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
1668 #define ACPI_MINIMUM_AWAKETIME 5
1671 acpi_sleep_enable(void *arg)
1673 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
1677 * Set the system sleep state
1679 * Currently we support S1-S5 but S4 is only S4BIOS
1682 acpi_SetSleepState(struct acpi_softc *sc, int state)
1684 ACPI_STATUS status = AE_OK;
1688 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
1691 /* Avoid reentry if already attempting to suspend. */
1692 if (sc->acpi_sstate != ACPI_STATE_S0)
1693 return_ACPI_STATUS (AE_BAD_PARAMETER);
1695 /* We recently woke up so don't suspend again for a while. */
1696 if (sc->acpi_sleep_disabled)
1697 return_ACPI_STATUS (AE_OK);
1704 status = AcpiGetSleepTypeData((UINT8)state, &TypeA, &TypeB);
1705 if (status == AE_NOT_FOUND) {
1706 device_printf(sc->acpi_dev,
1707 "Sleep state S%d not supported by BIOS\n", state);
1709 } else if (ACPI_FAILURE(status)) {
1710 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
1711 AcpiFormatException(status));
1715 sc->acpi_sstate = state;
1716 sc->acpi_sleep_disabled = 1;
1718 /* Disable all wake GPEs not appropriate for this state. */
1719 acpi_wake_limit_walk(state);
1721 /* Inform all devices that we are going to sleep. */
1722 if (DEVICE_SUSPEND(root_bus) != 0) {
1724 * Re-wake the system.
1726 * XXX note that a better two-pass approach with a 'veto' pass
1727 * followed by a "real thing" pass would be better, but the
1728 * current bus interface does not provide for this.
1730 DEVICE_RESUME(root_bus);
1731 return_ACPI_STATUS (AE_ERROR);
1734 status = AcpiEnterSleepStatePrep(state);
1735 if (ACPI_FAILURE(status)) {
1736 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
1737 AcpiFormatException(status));
1741 if (sc->acpi_sleep_delay > 0)
1742 DELAY(sc->acpi_sleep_delay * 1000000);
1744 if (state != ACPI_STATE_S1) {
1745 acpi_sleep_machdep(sc, state);
1747 /* AcpiEnterSleepState() may be incomplete, unlock if locked. */
1748 if (AcpiGbl_MutexInfo[ACPI_MTX_HARDWARE].OwnerId !=
1749 ACPI_MUTEX_NOT_ACQUIRED) {
1751 AcpiUtReleaseMutex(ACPI_MTX_HARDWARE);
1754 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
1755 if (state == ACPI_STATE_S4)
1758 status = AcpiEnterSleepState((UINT8)state);
1759 if (ACPI_FAILURE(status)) {
1760 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
1761 AcpiFormatException(status));
1765 AcpiLeaveSleepState((UINT8)state);
1766 DEVICE_RESUME(root_bus);
1767 sc->acpi_sstate = ACPI_STATE_S0;
1768 acpi_enable_fixed_events(sc);
1772 * Shut down cleanly and power off. This will call us back through the
1773 * shutdown handlers.
1775 shutdown_nice(RB_POWEROFF);
1779 status = AE_BAD_PARAMETER;
1783 /* Disable a second sleep request for a short period */
1784 if (sc->acpi_sleep_disabled)
1785 callout_reset(&sc->acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME,
1786 acpi_sleep_enable, sc);
1788 return_ACPI_STATUS (status);
1791 /* Initialize a device's wake GPE. */
1793 acpi_wake_init(device_t dev, int type)
1795 struct acpi_prw_data prw;
1797 /* Check that the device can wake the system. */
1798 if ((device_get_flags(dev) & ACPI_FLAG_WAKE_CAPABLE) == 0)
1801 /* Evaluate _PRW to find the GPE. */
1802 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
1805 /* Set the requested type for the GPE (runtime, wake, or both). */
1806 if (ACPI_FAILURE(AcpiSetGpeType(prw.gpe_handle, prw.gpe_bit, type))) {
1807 device_printf(dev, "set GPE type failed\n");
1814 /* Enable or disable the device's wake GPE. */
1816 acpi_wake_set_enable(device_t dev, int enable)
1818 struct acpi_prw_data prw;
1823 /* Make sure the device supports waking the system. */
1824 flags = device_get_flags(dev);
1825 handle = acpi_get_handle(dev);
1826 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
1829 /* Evaluate _PRW to find the GPE. */
1830 if (acpi_parse_prw(handle, &prw) != 0)
1834 status = AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1835 if (ACPI_FAILURE(status)) {
1836 device_printf(dev, "enable wake failed\n");
1839 device_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
1841 status = AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1842 if (ACPI_FAILURE(status)) {
1843 device_printf(dev, "disable wake failed\n");
1846 device_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
1852 /* Configure a device's GPE appropriately for the new sleep state. */
1854 acpi_wake_sleep_prep(device_t dev, int sstate)
1856 struct acpi_prw_data prw;
1860 /* Check that this is an ACPI device and get its GPE. */
1861 flags = device_get_flags(dev);
1862 handle = acpi_get_handle(dev);
1863 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
1866 /* Evaluate _PRW to find the GPE. */
1867 if (acpi_parse_prw(handle, &prw) != 0)
1871 * TBD: All Power Resources referenced by elements 2 through N
1872 * of the _PRW object are put into the ON state.
1876 * If the user requested that this device wake the system and the next
1877 * sleep state is valid for this GPE, enable it and the device's wake
1878 * capability. The sleep state must be less than (i.e., higher power)
1879 * or equal to the value specified by _PRW. Return early, leaving
1880 * the appropriate power resources enabled.
1882 if ((flags & ACPI_FLAG_WAKE_ENABLED) != 0 &&
1883 sstate <= prw.lowest_wake) {
1885 device_printf(dev, "wake_prep enabled gpe %#x for state %d\n",
1886 prw.gpe_bit, sstate);
1887 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1888 acpi_SetInteger(handle, "_PSW", 1);
1893 * If the device wake was disabled or this sleep state is too low for
1894 * this device, disable its wake capability and GPE.
1896 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1897 acpi_SetInteger(handle, "_PSW", 0);
1899 device_printf(dev, "wake_prep disabled gpe %#x for state %d\n",
1900 prw.gpe_bit, sstate);
1903 * TBD: All Power Resources referenced by elements 2 through N
1904 * of the _PRW object are put into the OFF state.
1910 /* Re-enable GPEs after wake. */
1912 acpi_wake_run_prep(device_t dev)
1914 struct acpi_prw_data prw;
1918 /* Check that this is an ACPI device and get its GPE. */
1919 flags = device_get_flags(dev);
1920 handle = acpi_get_handle(dev);
1921 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
1924 /* Evaluate _PRW to find the GPE. */
1925 if (acpi_parse_prw(handle, &prw) != 0)
1929 * TBD: Be sure all Power Resources referenced by elements 2 through N
1930 * of the _PRW object are in the ON state.
1933 /* Disable wake capability and if the user requested, enable the GPE. */
1934 acpi_SetInteger(handle, "_PSW", 0);
1935 if ((flags & ACPI_FLAG_WAKE_ENABLED) != 0)
1936 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1941 acpi_wake_limit(ACPI_HANDLE h, UINT32 level, void *context, void **status)
1943 struct acpi_prw_data prw;
1946 /* It's ok not to have _PRW if the device can't wake the system. */
1947 if (acpi_parse_prw(h, &prw) != 0)
1950 sstate = (int *)context;
1951 if (*sstate > prw.lowest_wake)
1952 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1957 /* Walk all system devices, disabling them if necessary for sstate. */
1959 acpi_wake_limit_walk(int sstate)
1961 ACPI_HANDLE sb_handle;
1963 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
1964 AcpiWalkNamespace(ACPI_TYPE_ANY, sb_handle, 100,
1965 acpi_wake_limit, &sstate, NULL);
1969 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
1971 acpi_wake_sysctl_walk(device_t dev)
1973 int error, i, numdevs;
1977 error = device_get_children(dev, &devlist, &numdevs);
1978 if (error != 0 || numdevs == 0)
1980 for (i = 0; i < numdevs; i++) {
1982 if (!device_is_attached(child))
1984 if (device_get_flags(child) & ACPI_FLAG_WAKE_CAPABLE) {
1986 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
1987 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
1988 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
1989 acpi_wake_set_sysctl, "I", "Device set to wake the system");
1990 #endif /* dfly_notyet */
1992 acpi_wake_sysctl_walk(child);
1994 free(devlist, M_TEMP);
1999 /* Enable or disable wake from userland. */
2001 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2006 dev = (device_t)arg1;
2007 enable = (device_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
2009 error = sysctl_handle_int(oidp, &enable, 0, req);
2010 if (error != 0 || req->newptr == NULL)
2012 if (enable != 0 && enable != 1)
2015 return (acpi_wake_set_enable(dev, enable));
2018 /* Parse a device's _PRW into a structure. */
2020 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2023 ACPI_BUFFER prw_buffer;
2024 ACPI_OBJECT *res, *res2;
2027 if (h == NULL || prw == NULL)
2031 * The _PRW object (7.2.9) is only required for devices that have the
2032 * ability to wake the system from a sleeping state.
2035 prw_buffer.Pointer = NULL;
2036 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2037 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2038 if (ACPI_FAILURE(status))
2040 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2043 if (!ACPI_PKG_VALID(res, 2))
2047 * Element 1 of the _PRW object:
2048 * The lowest power system sleeping state that can be entered while still
2049 * providing wake functionality. The sleeping state being entered must
2050 * be less than (i.e., higher power) or equal to this value.
2052 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2056 * Element 0 of the _PRW object:
2058 switch (res->Package.Elements[0].Type) {
2059 case ACPI_TYPE_INTEGER:
2061 * If the data type of this package element is numeric, then this
2062 * _PRW package element is the bit index in the GPEx_EN, in the
2063 * GPE blocks described in the FADT, of the enable bit that is
2064 * enabled for the wake event.
2066 prw->gpe_handle = NULL;
2067 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2070 case ACPI_TYPE_PACKAGE:
2072 * If the data type of this package element is a package, then this
2073 * _PRW package element is itself a package containing two
2074 * elements. The first is an object reference to the GPE Block
2075 * device that contains the GPE that will be triggered by the wake
2076 * event. The second element is numeric and it contains the bit
2077 * index in the GPEx_EN, in the GPE Block referenced by the
2078 * first element in the package, of the enable bit that is enabled for
2081 * For example, if this field is a package then it is of the form:
2082 * Package() {\_SB.PCI0.ISA.GPE, 2}
2084 res2 = &res->Package.Elements[0];
2085 if (!ACPI_PKG_VALID(res2, 2))
2087 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2088 if (prw->gpe_handle == NULL)
2090 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2098 /* XXX No power resource handling yet. */
2099 prw->power_res = NULL;
2102 if (prw_buffer.Pointer != NULL)
2103 AcpiOsFree(prw_buffer.Pointer);
2108 * Enable/Disable ACPI
2111 acpi_Enable(struct acpi_softc *sc)
2116 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2119 flags = ACPI_NO_ADDRESS_SPACE_INIT | ACPI_NO_HARDWARE_INIT |
2120 ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
2121 if (!sc->acpi_enabled)
2122 status = AcpiEnableSubsystem(flags);
2126 if (status == AE_OK)
2127 sc->acpi_enabled = 1;
2129 return_ACPI_STATUS (status);
2133 acpi_Disable(struct acpi_softc *sc)
2137 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2140 if (sc->acpi_enabled)
2141 status = AcpiDisable();
2145 if (status == AE_OK)
2146 sc->acpi_enabled = 0;
2148 return_ACPI_STATUS (status);
2152 * ACPI Event Handlers
2155 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2158 acpi_system_eventhandler_sleep(void *arg, int state)
2161 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2164 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
2165 acpi_SetSleepState((struct acpi_softc *)arg, state);
2171 acpi_system_eventhandler_wakeup(void *arg, int state)
2174 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2176 /* Well, what to do? :-) */
2185 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2188 acpi_event_power_button_sleep(void *context)
2190 struct acpi_softc *sc = (struct acpi_softc *)context;
2192 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2194 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2196 return_VALUE (ACPI_INTERRUPT_HANDLED);
2200 acpi_event_power_button_wake(void *context)
2202 struct acpi_softc *sc = (struct acpi_softc *)context;
2204 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2206 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2208 return_VALUE (ACPI_INTERRUPT_HANDLED);
2212 acpi_event_sleep_button_sleep(void *context)
2214 struct acpi_softc *sc = (struct acpi_softc *)context;
2216 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2218 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2220 return_VALUE (ACPI_INTERRUPT_HANDLED);
2224 acpi_event_sleep_button_wake(void *context)
2226 struct acpi_softc *sc = (struct acpi_softc *)context;
2228 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2230 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2232 return_VALUE (ACPI_INTERRUPT_HANDLED);
2236 * XXX This is kinda ugly, and should not be here.
2238 struct acpi_staticbuf {
2244 acpi_name(ACPI_HANDLE handle)
2246 static struct acpi_staticbuf buf;
2250 buf.buffer.Length = 512;
2251 buf.buffer.Pointer = &buf.data[0];
2253 if (ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer)))
2254 return (buf.buffer.Pointer);
2256 return ("(unknown path)");
2260 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2261 * parts of the namespace.
2264 acpi_avoid(ACPI_HANDLE handle)
2266 char *cp, *env, *np;
2269 np = acpi_name(handle);
2272 if ((env = getenv("debug.acpi.avoid.paths")) == NULL &&
2273 (env = getenv("debug.acpi.avoid")) == NULL)
2276 /* Scan the avoid list checking for a match */
2279 while ((*cp != 0) && isspace(*cp))
2284 while ((cp[len] != 0) && !isspace(cp[len]))
2286 if (!strncmp(cp, np, len)) {
2298 * Debugging/bug-avoidance. Disable ACPI subsystem components.
2301 acpi_disabled(char *subsys)
2306 if ((env = getenv("debug.acpi.disabled")) == NULL)
2308 if (strcmp(env, "all") == 0) {
2313 /* Scan the disable list, checking for a match. */
2316 while (*cp != '\0' && isspace(*cp))
2321 while (cp[len] != '\0' && !isspace(cp[len]))
2323 if (strncmp(cp, subsys, len) == 0) {
2335 * Control interface.
2337 * We multiplex ioctls for all participating ACPI devices here. Individual
2338 * drivers wanting to be accessible via /dev/acpi should use the
2339 * register/deregister interface to make their handlers visible.
2341 struct acpi_ioctl_hook
2343 TAILQ_ENTRY(acpi_ioctl_hook) link;
2349 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
2350 static int acpi_ioctl_hooks_initted;
2353 * Register an ioctl handler.
2356 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
2358 struct acpi_ioctl_hook *hp;
2360 hp = malloc(sizeof(*hp), M_ACPIDEV, M_INTWAIT);
2364 if (acpi_ioctl_hooks_initted == 0) {
2365 TAILQ_INIT(&acpi_ioctl_hooks);
2366 acpi_ioctl_hooks_initted = 1;
2368 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
2373 * Deregister an ioctl handler.
2376 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
2378 struct acpi_ioctl_hook *hp;
2380 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
2381 if ((hp->cmd == cmd) && (hp->fn == fn))
2385 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
2386 free(hp, M_ACPIDEV);
2391 acpiopen(dev_t dev, int flag, int fmt, d_thread_t *td)
2397 acpiclose(dev_t dev, int flag, int fmt, d_thread_t *td)
2403 acpiioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
2405 struct acpi_softc *sc;
2406 struct acpi_ioctl_hook *hp;
2407 int error, xerror, state;
2416 * Scan the list of registered ioctls, looking for handlers.
2418 if (acpi_ioctl_hooks_initted) {
2419 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
2420 if (hp->cmd == cmd) {
2421 xerror = hp->fn(cmd, addr, hp->arg);
2430 * Core ioctls are not permitted for non-writable user.
2431 * Currently, other ioctls just fetch information.
2432 * Not changing system behavior.
2434 if((flag & FWRITE) == 0)
2437 /* Core system ioctls. */
2440 if (ACPI_FAILURE(acpi_Enable(sc)))
2443 case ACPIIO_DISABLE:
2444 if (ACPI_FAILURE(acpi_Disable(sc)))
2447 case ACPIIO_SETSLPSTATE:
2448 if (!sc->acpi_enabled) {
2452 state = *(int *)addr;
2453 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) {
2454 if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
2472 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2474 char sleep_state[4];
2477 UINT8 state, TypeA, TypeB;
2480 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++) {
2481 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
2482 sprintf(sleep_state, "S%d ", state);
2483 strcat(buf, sleep_state);
2486 error = sysctl_handle_string(oidp, buf, sizeof(buf), req);
2491 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2493 char sleep_state[10];
2495 u_int new_state, old_state;
2497 old_state = *(u_int *)oidp->oid_arg1;
2498 if (old_state > ACPI_S_STATES_MAX + 1) {
2499 strcpy(sleep_state, "unknown");
2501 bzero(sleep_state, sizeof(sleep_state));
2502 strncpy(sleep_state, sleep_state_names[old_state],
2503 sizeof(sleep_state_names[old_state]));
2505 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
2506 if (error == 0 && req->newptr != NULL) {
2507 new_state = ACPI_STATE_S0;
2508 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++) {
2509 if (strncmp(sleep_state, sleep_state_names[new_state],
2510 sizeof(sleep_state)) == 0)
2513 if (new_state <= ACPI_S_STATES_MAX + 1) {
2514 if (new_state != old_state)
2515 *(u_int *)oidp->oid_arg1 = new_state;
2524 /* Inform devctl(4) when we receive a Notify. */
2526 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
2528 char notify_buf[16];
2529 ACPI_BUFFER handle_buf;
2532 if (subsystem == NULL)
2535 handle_buf.Pointer = NULL;
2536 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
2537 status = AcpiNsHandleToPathname(h, &handle_buf);
2538 if (ACPI_FAILURE(status))
2540 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
2542 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
2544 AcpiOsFree(handle_buf.Pointer);
2549 * Support for parsing debug options from the kernel environment.
2551 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
2552 * by specifying the names of the bits in the debug.acpi.layer and
2553 * debug.acpi.level environment variables. Bits may be unset by
2554 * prefixing the bit name with !.
2562 static struct debugtag dbg_layer[] = {
2563 {"ACPI_UTILITIES", ACPI_UTILITIES},
2564 {"ACPI_HARDWARE", ACPI_HARDWARE},
2565 {"ACPI_EVENTS", ACPI_EVENTS},
2566 {"ACPI_TABLES", ACPI_TABLES},
2567 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
2568 {"ACPI_PARSER", ACPI_PARSER},
2569 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
2570 {"ACPI_EXECUTER", ACPI_EXECUTER},
2571 {"ACPI_RESOURCES", ACPI_RESOURCES},
2572 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
2573 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
2574 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
2575 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
2577 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
2578 {"ACPI_BATTERY", ACPI_BATTERY},
2579 {"ACPI_BUS", ACPI_BUS},
2580 {"ACPI_BUTTON", ACPI_BUTTON},
2581 {"ACPI_EC", ACPI_EC},
2582 {"ACPI_FAN", ACPI_FAN},
2583 {"ACPI_POWERRES", ACPI_POWERRES},
2584 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
2585 {"ACPI_THERMAL", ACPI_THERMAL},
2586 {"ACPI_TIMER", ACPI_TIMER},
2587 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
2591 static struct debugtag dbg_level[] = {
2592 {"ACPI_LV_ERROR", ACPI_LV_ERROR},
2593 {"ACPI_LV_WARN", ACPI_LV_WARN},
2594 {"ACPI_LV_INIT", ACPI_LV_INIT},
2595 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
2596 {"ACPI_LV_INFO", ACPI_LV_INFO},
2597 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
2599 /* Trace verbosity level 1 [Standard Trace Level] */
2600 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
2601 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
2602 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
2603 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
2604 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
2605 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
2606 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
2607 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
2608 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
2609 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
2610 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
2611 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
2612 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
2613 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
2614 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
2616 /* Trace verbosity level 2 [Function tracing and memory allocation] */
2617 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
2618 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
2619 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
2620 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
2621 {"ACPI_LV_ALL", ACPI_LV_ALL},
2623 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
2624 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
2625 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
2626 {"ACPI_LV_IO", ACPI_LV_IO},
2627 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
2628 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
2630 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
2631 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
2632 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
2633 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
2634 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
2635 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
2640 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
2652 while (*ep && !isspace(*ep))
2663 for (i = 0; tag[i].name != NULL; i++) {
2664 if (!strncmp(cp, tag[i].name, l)) {
2666 *flag |= tag[i].value;
2668 *flag &= ~tag[i].value;
2676 acpi_set_debugging(void *junk)
2678 char *layer, *level;
2685 layer = getenv("debug.acpi.layer");
2686 level = getenv("debug.acpi.level");
2687 if (layer == NULL && level == NULL)
2690 printf("ACPI set debug");
2691 if (layer != NULL) {
2692 if (strcmp("NONE", layer) != 0)
2693 printf(" layer '%s'", layer);
2694 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
2697 if (level != NULL) {
2698 if (strcmp("NONE", level) != 0)
2699 printf(" level '%s'", level);
2700 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
2705 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
2709 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
2712 struct debugtag *tag;
2715 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
2717 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
2718 tag = &dbg_layer[0];
2719 dbg = &AcpiDbgLayer;
2721 tag = &dbg_level[0];
2722 dbg = &AcpiDbgLevel;
2725 /* Get old values if this is a get request. */
2727 sbuf_cpy(&sb, "NONE");
2728 } else if (req->newptr == NULL) {
2729 for (; tag->name != NULL; tag++) {
2730 if ((*dbg & tag->value) == tag->value)
2731 sbuf_printf(&sb, "%s ", tag->name);
2737 /* Copy out the old values to the user. */
2738 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
2741 /* If the user is setting a string, parse it. */
2742 if (error == 0 && req->newptr != NULL) {
2744 /* XXX setenv((char *)oidp->oid_arg1, (char *)req->newptr); */
2745 acpi_set_debugging(NULL);
2750 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
2751 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
2752 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
2753 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
2757 acpi_pm_func(u_long cmd, void *arg, ...)
2759 int state, acpi_state;
2761 struct acpi_softc *sc;
2766 case POWER_CMD_SUSPEND:
2767 sc = (struct acpi_softc *)arg;
2774 state = va_arg(ap, int);
2778 case POWER_SLEEP_STATE_STANDBY:
2779 acpi_state = sc->acpi_standby_sx;
2781 case POWER_SLEEP_STATE_SUSPEND:
2782 acpi_state = sc->acpi_suspend_sx;
2784 case POWER_SLEEP_STATE_HIBERNATE:
2785 acpi_state = ACPI_STATE_S4;
2792 acpi_SetSleepState(sc, acpi_state);
2804 acpi_pm_register(void *arg)
2806 if (!cold || resource_disabled("acpi", 0))
2809 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
2812 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);