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 1.156 2004/06/05 07:25:58 njl Exp $
30 * $DragonFly: src/sys/dev/acpica5/acpi.c,v 1.8 2004/08/02 19:51:07 dillon 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>
49 #include <machine/clock.h>
50 #include <machine/globaldata.h>
51 #include <machine/resource.h>
52 #include <machine/bus.h>
54 #include <bus/isa/isavar.h>
57 #include <dev/acpica5/acpivar.h>
58 #include <dev/acpica5/acpiio.h>
61 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
63 /* Hooks for the ACPI CA debugging infrastructure */
64 #define _COMPONENT ACPI_BUS
65 ACPI_MODULE_NAME("ACPI")
67 static d_open_t acpiopen;
68 static d_close_t acpiclose;
69 static d_ioctl_t acpiioctl;
71 #define CDEV_MAJOR 152
72 static struct cdevsw acpi_cdevsw = {
79 .old_close = acpiclose,
80 .old_ioctl = acpiioctl
83 #if __FreeBSD_version >= 500000
84 struct mtx acpi_mutex;
93 #define ACPI_OEM_REV_ANY 0
95 static struct acpi_quirks acpi_quirks_table[] = {
97 /* Bad PCI routing table. Used on some SuperMicro boards. */
98 { "PTLTD ", 0x06040000, "pci_link" },
104 static int acpi_modevent(struct module *mod, int event, void *junk);
105 static void acpi_identify(driver_t *driver, device_t parent);
106 static int acpi_probe(device_t dev);
107 static int acpi_attach(device_t dev);
108 static int acpi_shutdown(device_t dev);
109 static void acpi_quirks_set(void);
110 static device_t acpi_add_child(device_t bus, int order, const char *name,
112 static int acpi_print_child(device_t bus, device_t child);
113 static int acpi_read_ivar(device_t dev, device_t child, int index,
115 static int acpi_write_ivar(device_t dev, device_t child, int index,
117 static int acpi_set_resource(device_t dev, device_t child, int type,
118 int rid, u_long start, u_long count);
119 static int acpi_get_resource(device_t dev, device_t child, int type,
120 int rid, u_long *startp, u_long *countp);
121 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
122 int type, int *rid, u_long start, u_long end,
123 u_long count, u_int flags);
124 static int acpi_release_resource(device_t bus, device_t child, int type,
125 int rid, struct resource *r);
126 static uint32_t acpi_isa_get_logicalid(device_t dev);
127 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
128 static int acpi_isa_pnp_probe(device_t bus, device_t child,
129 struct isa_pnp_id *ids);
130 static void acpi_probe_children(device_t bus);
131 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
132 void *context, void **status);
133 static void acpi_shutdown_pre_sync(void *arg, int howto);
134 static void acpi_shutdown_final(void *arg, int howto);
135 static void acpi_shutdown_poweroff(void *arg);
136 static void acpi_enable_fixed_events(struct acpi_softc *sc);
137 static int acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw);
138 static ACPI_STATUS acpi_wake_limit(ACPI_HANDLE h, UINT32 level, void *context,
140 static int acpi_wake_limit_walk(int sstate);
141 static int acpi_wake_sysctl_walk(device_t dev);
142 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
143 static void acpi_system_eventhandler_sleep(void *arg, int state);
144 static void acpi_system_eventhandler_wakeup(void *arg, int state);
145 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
146 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
147 static int acpi_pm_func(u_long cmd, void *arg, ...);
148 static int acpi_child_location_str_method(device_t acdev, device_t child,
149 char *buf, size_t buflen);
150 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
151 char *buf, size_t buflen);
153 static device_method_t acpi_methods[] = {
154 /* Device interface */
155 DEVMETHOD(device_identify, acpi_identify),
156 DEVMETHOD(device_probe, acpi_probe),
157 DEVMETHOD(device_attach, acpi_attach),
158 DEVMETHOD(device_shutdown, acpi_shutdown),
159 DEVMETHOD(device_detach, bus_generic_detach),
160 DEVMETHOD(device_suspend, bus_generic_suspend),
161 DEVMETHOD(device_resume, bus_generic_resume),
164 DEVMETHOD(bus_add_child, acpi_add_child),
165 DEVMETHOD(bus_print_child, acpi_print_child),
166 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
167 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
168 DEVMETHOD(bus_set_resource, acpi_set_resource),
169 DEVMETHOD(bus_get_resource, acpi_get_resource),
170 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
171 DEVMETHOD(bus_release_resource, acpi_release_resource),
172 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
173 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
174 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
175 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
176 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
177 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
178 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
181 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
186 static driver_t acpi_driver = {
189 sizeof(struct acpi_softc),
192 static devclass_t acpi_devclass;
193 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
194 MODULE_VERSION(acpi, 1);
196 static const char* sleep_state_names[] = {
197 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
199 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RW, NULL, "ACPI debugging");
200 static char acpi_ca_version[12];
201 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
202 acpi_ca_version, 0, "Version of Intel ACPI-CA");
205 * Allow override of whether methods execute in parallel or not.
206 * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
207 * errors for AML that really can't handle parallel method execution.
208 * It is off by default since this breaks recursive methods and
209 * some IBMs use such code.
211 static int acpi_serialize_methods;
212 TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
215 * ACPI can only be loaded as a module by the loader; activating it after
216 * system bootstrap time is not useful, and can be fatal to the system.
217 * It also cannot be unloaded, since the entire system bus heirarchy hangs
221 acpi_modevent(struct module *mod, int event, void *junk)
226 printf("The ACPI driver cannot be loaded after boot.\n");
231 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
241 * Perform early initialization.
249 static int error, started = 0;
251 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
254 return_VALUE (error);
257 #if __FreeBSD_version >= 500000
258 /* Initialise the ACPI mutex */
259 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
263 * Set the globals from our tunables. This is needed because ACPI-CA
264 * uses UINT8 for some values and we have no tunable_byte.
266 AcpiGbl_AllMethodsSerialized = (UINT8)acpi_serialize_methods;
268 /* Start up the ACPI CA subsystem. */
270 debugpoint = getenv("debug.acpi.debugger");
272 if (!strcmp(debugpoint, "init"))
273 acpi_EnterDebugger();
277 if (ACPI_FAILURE(error = AcpiInitializeSubsystem())) {
278 printf("ACPI: initialisation failed: %s\n", AcpiFormatException(error));
279 return_VALUE (error);
282 debugpoint = getenv("debug.acpi.debugger");
284 if (!strcmp(debugpoint, "tables"))
285 acpi_EnterDebugger();
290 if (ACPI_FAILURE(error = AcpiLoadTables())) {
291 printf("ACPI: table load failed: %s\n", AcpiFormatException(error));
295 /* Set up any quirks we have for this XSDT. */
297 if (acpi_disabled("acpi"))
298 return_VALUE (AE_ERROR);
300 return_VALUE (AE_OK);
304 * Detect ACPI, perform early initialisation
307 acpi_identify(driver_t *driver, device_t parent)
311 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
316 /* Check that we haven't been disabled with a hint. */
317 if (resource_disabled("acpi", 0))
320 /* Make sure we're not being doubly invoked. */
321 if (device_find_child(parent, "acpi", 0) != NULL)
324 /* Initialize ACPI-CA. */
325 if (ACPI_FAILURE(acpi_Startup()))
328 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%#x", ACPI_CA_VERSION);
330 /* Attach the actual ACPI device. */
331 if ((child = BUS_ADD_CHILD(parent, 0, "acpi", 0)) == NULL) {
332 device_printf(parent, "ACPI: could not attach\n");
338 * Fetch some descriptive data from ACPI to put in our attach message
341 acpi_probe(device_t dev)
343 ACPI_TABLE_HEADER th;
350 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
352 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
353 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
355 device_printf(dev, "Other PM system enabled.\n");
361 if (ACPI_FAILURE(status = AcpiGetTableHeader(ACPI_TABLE_XSDT, 1, &th))) {
362 device_printf(dev, "couldn't get XSDT header: %s\n",
363 AcpiFormatException(status));
366 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
367 sbuf_bcat(&sb, th.OemId, 6);
370 sbuf_bcat(&sb, th.OemTableId, 8);
373 device_set_desc_copy(dev, sbuf_data(&sb));
382 acpi_attach(device_t dev)
384 struct acpi_softc *sc;
395 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
397 sc = device_get_softc(dev);
398 bzero(sc, sizeof(*sc));
402 debugpoint = getenv("debug.acpi.debugger");
404 if (!strcmp(debugpoint, "spaces"))
405 acpi_EnterDebugger();
410 /* Install the default address space handlers. */
412 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
413 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
414 if (ACPI_FAILURE(status)) {
415 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
416 AcpiFormatException(status));
419 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
420 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
421 if (ACPI_FAILURE(status)) {
422 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
423 AcpiFormatException(status));
426 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
427 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
428 if (ACPI_FAILURE(status)) {
429 device_printf(dev, "could not initialise PciConfig handler: %s\n",
430 AcpiFormatException(status));
435 * Bring ACPI fully online.
437 * Note that some systems (specifically, those with namespace evaluation
438 * issues that require the avoidance of parts of the namespace) must
439 * avoid running _INI and _STA on everything, as well as dodging the final
442 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
444 * XXX We should arrange for the object init pass after we have attached
445 * all our child devices, but on many systems it works here.
448 debugpoint = getenv("debug.acpi.debugger");
450 if (!strcmp(debugpoint, "enable"))
451 acpi_EnterDebugger();
456 if (testenv("debug.acpi.avoid"))
457 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
458 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
459 device_printf(dev, "Could not enable ACPI: %s\n",
460 AcpiFormatException(status));
465 * Call the ECDT probe function to provide EC functionality before
466 * the namespace has been evaluated.
468 acpi_ec_ecdt_probe(dev);
470 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
471 device_printf(dev, "Could not initialize ACPI objects: %s\n",
472 AcpiFormatException(status));
477 * Setup our sysctl tree.
479 * XXX: This doesn't check to make sure that none of these fail.
481 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
482 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
483 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
484 device_get_name(dev), CTLFLAG_RD, 0, "");
485 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
486 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
487 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
488 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
489 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
490 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
491 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
492 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
493 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
494 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
495 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
496 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
497 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
498 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
499 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
500 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
501 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
502 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
503 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
504 OID_AUTO, "sleep_delay", CTLFLAG_RD | CTLFLAG_RW,
505 &sc->acpi_sleep_delay, 0, "sleep delay");
506 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
507 OID_AUTO, "s4bios", CTLFLAG_RD | CTLFLAG_RW,
508 &sc->acpi_s4bios, 0, "S4BIOS mode");
509 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
510 OID_AUTO, "verbose", CTLFLAG_RD | CTLFLAG_RW,
511 &sc->acpi_verbose, 0, "verbose mode");
512 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
513 OID_AUTO, "disable_on_poweroff", CTLFLAG_RD | CTLFLAG_RW,
514 &sc->acpi_disable_on_poweroff, 0, "ACPI subsystem disable on poweroff");
517 * Default to 1 second before sleeping to give some machines time to
520 sc->acpi_sleep_delay = 1;
521 sc->acpi_disable_on_poweroff = 0;
523 sc->acpi_verbose = 1;
524 if ((env = getenv("hw.acpi.verbose")) && strcmp(env, "0")) {
525 sc->acpi_verbose = 1;
529 /* Only enable S4BIOS by default if the FACS says it is available. */
530 if (AcpiGbl_FACS->S4Bios_f != 0)
534 * Dispatch the default sleep state to devices. The lid switch is set
535 * to NONE by default to avoid surprising users.
537 sc->acpi_power_button_sx = ACPI_STATE_S5;
538 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
539 sc->acpi_standby_sx = ACPI_STATE_S1;
540 sc->acpi_suspend_sx = ACPI_STATE_S3;
542 /* Pick the first valid sleep state for the sleep button default. */
543 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
544 for (state = ACPI_STATE_S1; state < ACPI_STATE_S5; state++)
545 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
546 sc->acpi_sleep_button_sx = state;
550 acpi_enable_fixed_events(sc);
553 * Scan the namespace and attach/initialise children.
556 debugpoint = getenv("debug.acpi.debugger");
558 if (!strcmp(debugpoint, "probe"))
559 acpi_EnterDebugger();
564 /* Register our shutdown handlers */
565 EVENTHANDLER_REGISTER(shutdown_pre_sync, acpi_shutdown_pre_sync, sc,
567 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
571 * Register our acpi event handlers.
572 * XXX should be configurable eg. via userland policy manager.
574 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
575 sc, ACPI_EVENT_PRI_LAST);
576 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
577 sc, ACPI_EVENT_PRI_LAST);
579 /* Flag our initial states. */
580 sc->acpi_enabled = 1;
581 sc->acpi_sstate = ACPI_STATE_S0;
582 sc->acpi_sleep_disabled = 0;
584 /* Create the control device */
585 cdevsw_add(&acpi_cdevsw, 0, 0);
586 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
588 sc->acpi_dev_t->si_drv1 = sc;
591 debugpoint = getenv("debug.acpi.debugger");
593 if (strcmp(debugpoint, "running") == 0)
594 acpi_EnterDebugger();
599 if ((error = acpi_task_thread_init()))
602 if ((error = acpi_machdep_init(dev)))
605 /* Register ACPI again to pass the correct argument of pm_func. */
606 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
608 if (!acpi_disabled("bus"))
609 acpi_probe_children(dev);
615 return_VALUE (error);
619 acpi_shutdown(device_t dev)
622 /* Disable all wake GPEs not appropriate for reboot/poweroff. */
623 acpi_wake_limit_walk(ACPI_STATE_S5);
630 XSDT_DESCRIPTOR *xsdt;
631 struct acpi_quirks *quirk;
636 * If the user loaded a custom table or disabled "quirks", leave
637 * the settings alone.
640 if ((env = getenv("acpi_dsdt_load")) != NULL) {
641 /* XXX No strcasecmp but this is good enough. */
642 if (*env == 'Y' || *env == 'y')
646 if ((env = getenv("debug.acpi.disabled")) != NULL) {
647 if (strstr("quirks", env) != NULL)
653 * Search through our quirk table and concatenate the disabled
654 * values with whatever we find.
657 for (quirk = acpi_quirks_table; quirk->OemId; quirk++) {
658 if (!strncmp(xsdt->OemId, quirk->OemId, strlen(quirk->OemId)) &&
659 (xsdt->OemRevision == quirk->OemRevision ||
660 quirk->OemRevision == ACPI_OEM_REV_ANY)) {
661 len += strlen(quirk->value) + 2;
662 if ((tmp = malloc(len, M_TEMP, M_NOWAIT)) == NULL)
664 sprintf(tmp, "%s %s", env ? env : "", quirk->value);
666 setenv("debug.acpi.disabled", tmp);
679 * Handle a new device being added
682 acpi_add_child(device_t bus, int order, const char *name, int unit)
684 struct acpi_device *ad;
687 ad = malloc(sizeof(*ad), M_ACPIDEV, M_INTWAIT | M_ZERO);
689 resource_list_init(&ad->ad_rl);
691 child = device_add_child_ordered(bus, order, name, unit);
693 device_set_ivars(child, ad);
698 acpi_print_child(device_t bus, device_t child)
700 struct acpi_device *adev = device_get_ivars(child);
701 struct resource_list *rl = &adev->ad_rl;
704 retval += bus_print_child_header(bus, child);
705 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
706 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
707 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
708 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
709 retval += bus_print_child_footer(bus, child);
714 /* Location hint for devctl(8) */
716 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
719 struct acpi_device *dinfo = device_get_ivars(child);
721 if (dinfo->ad_handle)
722 snprintf(buf, buflen, "path=%s", acpi_name(dinfo->ad_handle));
724 snprintf(buf, buflen, "magic=unknown");
728 /* PnP information for devctl(8) */
730 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
733 ACPI_BUFFER adbuf = {ACPI_ALLOCATE_BUFFER, NULL};
734 ACPI_DEVICE_INFO *adinfo;
735 struct acpi_device *dinfo = device_get_ivars(child);
739 error = AcpiGetObjectInfo(dinfo->ad_handle, &adbuf);
740 adinfo = (ACPI_DEVICE_INFO *) adbuf.Pointer;
743 snprintf(buf, buflen, "Unknown");
745 snprintf(buf, buflen, "_HID=%s _UID=%lu",
746 (adinfo->Valid & ACPI_VALID_HID) ?
747 adinfo->HardwareId.Value : "UNKNOWN",
748 (adinfo->Valid & ACPI_VALID_UID) ?
749 strtoul(adinfo->UniqueId.Value, &end, 10) : 0);
758 * Handle per-device ivars
761 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
763 struct acpi_device *ad;
765 if ((ad = device_get_ivars(child)) == NULL) {
766 printf("device has no ivars\n");
770 /* ACPI and ISA compatibility ivars */
772 case ACPI_IVAR_HANDLE:
773 *(ACPI_HANDLE *)result = ad->ad_handle;
775 case ACPI_IVAR_MAGIC:
776 *(int *)result = ad->ad_magic;
778 case ACPI_IVAR_PRIVATE:
779 *(void **)result = ad->ad_private;
781 case ISA_IVAR_VENDORID:
782 case ISA_IVAR_SERIAL:
783 case ISA_IVAR_COMPATID:
786 case ISA_IVAR_LOGICALID:
787 *(int *)result = acpi_isa_get_logicalid(child);
797 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
799 struct acpi_device *ad;
801 if ((ad = device_get_ivars(child)) == NULL) {
802 printf("device has no ivars\n");
807 case ACPI_IVAR_HANDLE:
808 ad->ad_handle = (ACPI_HANDLE)value;
810 case ACPI_IVAR_MAGIC:
811 ad->ad_magic = (int)value;
813 case ACPI_IVAR_PRIVATE:
814 ad->ad_private = (void *)value;
817 panic("bad ivar write request (%d)", index);
825 * Handle child resource allocation/removal
828 acpi_set_resource(device_t dev, device_t child, int type, int rid,
829 u_long start, u_long count)
831 struct acpi_device *ad = device_get_ivars(child);
832 struct resource_list *rl = &ad->ad_rl;
834 resource_list_add(rl, type, rid, start, start + count -1, count);
840 acpi_get_resource(device_t dev, device_t child, int type, int rid,
841 u_long *startp, u_long *countp)
843 struct acpi_device *ad = device_get_ivars(child);
844 struct resource_list *rl = &ad->ad_rl;
845 struct resource_list_entry *rle;
847 rle = resource_list_find(rl, type, rid);
852 *startp = rle->start;
854 *countp = rle->count;
859 static struct resource *
860 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
861 u_long start, u_long end, u_long count, u_int flags)
863 struct acpi_device *ad = device_get_ivars(child);
864 struct resource_list *rl = &ad->ad_rl;
866 return (resource_list_alloc(rl, bus, child, type, rid, start, end, count,
871 acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r)
873 struct acpi_device *ad = device_get_ivars(child);
874 struct resource_list *rl = &ad->ad_rl;
876 return (resource_list_release(rl, bus, child, type, rid, r));
879 /* Allocate an IO port or memory resource, given its GAS. */
881 acpi_bus_alloc_gas(device_t dev, int *rid, ACPI_GENERIC_ADDRESS *gas)
885 if (gas == NULL || !ACPI_VALID_ADDRESS(gas->Address) ||
886 gas->RegisterBitWidth < 8)
889 switch (gas->AddressSpaceId) {
890 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
891 type = SYS_RES_MEMORY;
893 case ACPI_ADR_SPACE_SYSTEM_IO:
894 type = SYS_RES_IOPORT;
900 bus_set_resource(dev, type, *rid, gas->Address, gas->RegisterBitWidth / 8);
901 return (bus_alloc_resource_any(dev, type, rid, RF_ACTIVE));
905 * Handle ISA-like devices probing for a PnP ID to match.
907 #define PNP_EISAID(s) \
908 ((((s[0] - '@') & 0x1f) << 2) \
909 | (((s[1] - '@') & 0x18) >> 3) \
910 | (((s[1] - '@') & 0x07) << 13) \
911 | (((s[2] - '@') & 0x1f) << 8) \
912 | (PNP_HEXTONUM(s[4]) << 16) \
913 | (PNP_HEXTONUM(s[3]) << 20) \
914 | (PNP_HEXTONUM(s[6]) << 24) \
915 | (PNP_HEXTONUM(s[5]) << 28))
918 acpi_isa_get_logicalid(device_t dev)
920 ACPI_DEVICE_INFO *devinfo;
927 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
931 buf.Length = ACPI_ALLOCATE_BUFFER;
935 /* Fetch and validate the HID. */
936 if ((h = acpi_get_handle(dev)) == NULL)
938 error = AcpiGetObjectInfo(h, &buf);
939 if (ACPI_FAILURE(error))
941 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
943 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
944 pnpid = PNP_EISAID(devinfo->HardwareId.Value);
947 if (buf.Pointer != NULL)
948 AcpiOsFree(buf.Pointer);
950 return_VALUE (pnpid);
954 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
956 ACPI_DEVICE_INFO *devinfo;
964 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
969 buf.Length = ACPI_ALLOCATE_BUFFER;
973 /* Fetch and validate the CID */
974 if ((h = acpi_get_handle(dev)) == NULL)
976 error = AcpiGetObjectInfo(h, &buf);
977 if (ACPI_FAILURE(error))
979 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
980 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
983 if (devinfo->CompatibilityId.Count < count)
984 count = devinfo->CompatibilityId.Count;
985 for (i = 0; i < count; i++) {
986 if (strncmp(devinfo->CompatibilityId.Id[i].Value, "PNP", 3) != 0)
988 *pnpid++ = PNP_EISAID(devinfo->CompatibilityId.Id[i].Value);
993 if (buf.Pointer != NULL)
994 AcpiOsFree(buf.Pointer);
996 return_VALUE (valid);
1000 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1002 int result, cid_count, i;
1003 uint32_t lid, cids[8];
1005 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1008 * ISA-style drivers attached to ACPI may persist and
1009 * probe manually if we return ENOENT. We never want
1010 * that to happen, so don't ever return it.
1014 /* Scan the supplied IDs for a match */
1015 lid = acpi_isa_get_logicalid(child);
1016 cid_count = acpi_isa_get_compatid(child, cids, 8);
1017 while (ids && ids->ip_id) {
1018 if (lid == ids->ip_id) {
1022 for (i = 0; i < cid_count; i++) {
1023 if (cids[i] == ids->ip_id) {
1032 return_VALUE (result);
1036 * Scan relevant portions of the ACPI namespace and attach child devices.
1038 * Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and
1039 * \_SB_ scopes, and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec.
1042 acpi_probe_children(device_t bus)
1046 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL};
1049 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1052 /* Create any static children by calling device identify methods. */
1053 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1054 bus_generic_probe(bus);
1057 * Scan the namespace and insert placeholders for all the devices that
1060 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1061 * we want to create nodes for all devices, not just those that are
1062 * currently present. (This assumes that we don't want to create/remove
1063 * devices as they appear, which might be smarter.)
1065 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1066 for (i = 0; scopes[i] != NULL; i++) {
1067 status = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent);
1068 if (ACPI_SUCCESS(status)) {
1069 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, acpi_probe_child,
1075 * Scan all of the child devices we have created and let them probe/attach.
1077 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1078 bus_generic_attach(bus);
1081 * Some of these children may have attached others as part of their attach
1082 * process (eg. the root PCI bus driver), so rescan.
1084 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1085 bus_generic_attach(bus);
1087 /* Attach wake sysctls. */
1088 acpi_wake_sysctl_walk(bus);
1090 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1095 * Evaluate a child device and determine whether we might attach a device to
1099 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1101 ACPI_OBJECT_TYPE type;
1102 device_t child, bus = (device_t)context;
1104 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1106 /* Skip this device if we think we'll have trouble with it. */
1107 if (acpi_avoid(handle))
1108 return_ACPI_STATUS (AE_OK);
1110 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1112 case ACPI_TYPE_DEVICE:
1113 case ACPI_TYPE_PROCESSOR:
1114 case ACPI_TYPE_THERMAL:
1115 case ACPI_TYPE_POWER:
1116 if (acpi_disabled("children"))
1120 * Create a placeholder device for this node. Sort the placeholder
1121 * so that the probe/attach passes will run breadth-first.
1123 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n",
1124 acpi_name(handle)));
1125 child = BUS_ADD_CHILD(bus, level * 10, NULL, -1);
1128 acpi_set_handle(child, handle);
1130 /* Check if the device can generate wake events. */
1131 if (ACPI_SUCCESS(AcpiEvaluateObject(handle, "_PRW", NULL, NULL)))
1132 device_set_flags(child, ACPI_FLAG_WAKE_CAPABLE);
1135 * Check that the device is present. If it's not present,
1136 * leave it disabled (so that we have a device_t attached to
1137 * the handle, but we don't probe it).
1139 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1140 device_disable(child);
1145 * Get the device's resource settings and attach them.
1146 * Note that if the device has _PRS but no _CRS, we need
1147 * to decide when it's appropriate to try to configure the
1148 * device. Ignore the return value here; it's OK for the
1149 * device not to have any resources.
1151 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
1153 /* If we're debugging, probe/attach now rather than later */
1154 ACPI_DEBUG_EXEC(device_probe_and_attach(child));
1159 return_ACPI_STATUS (AE_OK);
1163 acpi_shutdown_pre_sync(void *arg, int howto)
1165 struct acpi_softc *sc = arg;
1170 * Disable all ACPI events before soft off, otherwise the system
1171 * will be turned on again on some laptops.
1173 * XXX this should probably be restricted to masking some events just
1174 * before powering down, since we may still need ACPI during the
1177 if (sc->acpi_disable_on_poweroff)
1182 acpi_shutdown_final(void *arg, int howto)
1188 * If powering off, run the actual shutdown code on each processor.
1189 * It will only perform the shutdown on the BSP. Some chipsets do
1190 * not power off the system correctly if called from an AP.
1192 if ((howto & RB_POWEROFF) != 0) {
1193 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1194 if (ACPI_FAILURE(status)) {
1195 printf("AcpiEnterSleepStatePrep failed - %s\n",
1196 AcpiFormatException(status));
1199 printf("Powering system off using ACPI\n");
1201 smp_rendezvous(NULL, acpi_shutdown_poweroff, NULL, NULL);
1203 acpi_shutdown_poweroff(NULL);
1206 printf("Shutting down ACPI\n");
1212 * Since this function may be called with locks held or in an unknown
1213 * context, it cannot allocate memory, acquire locks, sleep, etc.
1216 acpi_shutdown_poweroff(void *arg)
1222 /* Only attempt to power off if this is the BSP (cpuid 0). */
1223 if (mdcpu->mi.gd_cpuid != 0)
1226 ACPI_DISABLE_IRQS();
1227 status = AcpiEnterSleepState(ACPI_STATE_S5);
1228 if (ACPI_FAILURE(status)) {
1229 printf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1232 printf("ACPI power-off failed - timeout\n");
1237 acpi_enable_fixed_events(struct acpi_softc *sc)
1239 static int first_time = 1;
1243 /* Enable and clear fixed events and install handlers. */
1244 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->PwrButton == 0) {
1245 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1246 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1247 acpi_event_power_button_sleep, sc);
1249 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1251 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->SleepButton == 0) {
1252 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1253 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1254 acpi_event_sleep_button_sleep, sc);
1256 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1263 * Returns true if the device is actually present and should
1264 * be attached to. This requires the present, enabled, UI-visible
1265 * and diagnostics-passed bits to be set.
1268 acpi_DeviceIsPresent(device_t dev)
1270 ACPI_DEVICE_INFO *devinfo;
1279 if ((h = acpi_get_handle(dev)) == NULL)
1282 buf.Length = ACPI_ALLOCATE_BUFFER;
1283 error = AcpiGetObjectInfo(h, &buf);
1284 if (ACPI_FAILURE(error))
1286 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1288 /* If no _STA method, must be present */
1289 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1292 /* Return true for 'present' and 'functioning' */
1293 if ((devinfo->CurrentStatus & 0x9) == 0x9)
1296 AcpiOsFree(buf.Pointer);
1301 * Returns true if the battery is actually present and inserted.
1304 acpi_BatteryIsPresent(device_t dev)
1306 ACPI_DEVICE_INFO *devinfo;
1315 if ((h = acpi_get_handle(dev)) == NULL)
1318 buf.Length = ACPI_ALLOCATE_BUFFER;
1319 error = AcpiGetObjectInfo(h, &buf);
1320 if (ACPI_FAILURE(error))
1322 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1324 /* If no _STA method, must be present */
1325 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1328 /* Return true for 'present' and 'functioning' */
1329 if ((devinfo->CurrentStatus & 0x19) == 0x19)
1332 AcpiOsFree(buf.Pointer);
1337 * Match a HID string against a device
1340 acpi_MatchHid(device_t dev, char *hid)
1342 ACPI_DEVICE_INFO *devinfo;
1353 if ((h = acpi_get_handle(dev)) == NULL)
1356 buf.Length = ACPI_ALLOCATE_BUFFER;
1357 error = AcpiGetObjectInfo(h, &buf);
1358 if (ACPI_FAILURE(error))
1360 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1362 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
1363 strcmp(hid, devinfo->HardwareId.Value) == 0)
1365 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
1366 for (i = 0; i < devinfo->CompatibilityId.Count; i++) {
1367 if (strcmp(hid, devinfo->CompatibilityId.Id[i].Value) == 0) {
1374 AcpiOsFree(buf.Pointer);
1379 * Return the handle of a named object within our scope, ie. that of (parent)
1380 * or one if its parents.
1383 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1390 /* Walk back up the tree to the root */
1392 status = AcpiGetHandle(parent, path, &r);
1393 if (ACPI_SUCCESS(status)) {
1397 if (status != AE_NOT_FOUND)
1399 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1400 return (AE_NOT_FOUND);
1405 /* Find the difference between two PM tick counts. */
1407 acpi_TimerDelta(uint32_t end, uint32_t start)
1412 delta = end - start;
1413 else if (AcpiGbl_FADT->TmrValExt == 0)
1414 delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
1416 delta = ((0xFFFFFFFF - start) + end + 1);
1421 * Allocate a buffer with a preset data size.
1424 acpi_AllocBuffer(int size)
1428 buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_INTWAIT);
1430 buf->Pointer = (void *)(buf + 1);
1435 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
1438 ACPI_OBJECT_LIST args;
1442 arg1.Type = ACPI_TYPE_INTEGER;
1443 arg1.Integer.Value = number;
1445 args.Pointer = &arg1;
1447 return (AcpiEvaluateObject(handle, path, &args, NULL));
1451 * Evaluate a path that should return an integer.
1454 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
1463 handle = ACPI_ROOT_OBJECT;
1466 * Assume that what we've been pointed at is an Integer object, or
1467 * a method that will return an Integer.
1469 buf.Pointer = ¶m;
1470 buf.Length = sizeof(param);
1471 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1472 if (ACPI_SUCCESS(status)) {
1473 if (param.Type == ACPI_TYPE_INTEGER)
1474 *number = param.Integer.Value;
1480 * In some applications, a method that's expected to return an Integer
1481 * may instead return a Buffer (probably to simplify some internal
1482 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1483 * convert it into an Integer as best we can.
1487 if (status == AE_BUFFER_OVERFLOW) {
1488 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
1489 status = AE_NO_MEMORY;
1491 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1492 if (ACPI_SUCCESS(status))
1493 status = acpi_ConvertBufferToInteger(&buf, number);
1494 AcpiOsFree(buf.Pointer);
1501 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
1507 p = (ACPI_OBJECT *)bufp->Pointer;
1508 if (p->Type == ACPI_TYPE_INTEGER) {
1509 *number = p->Integer.Value;
1512 if (p->Type != ACPI_TYPE_BUFFER)
1514 if (p->Buffer.Length > sizeof(int))
1515 return (AE_BAD_DATA);
1518 val = p->Buffer.Pointer;
1519 for (i = 0; i < p->Buffer.Length; i++)
1520 *number += val[i] << (i * 8);
1525 * Iterate over the elements of an a package object, calling the supplied
1526 * function for each element.
1528 * XXX possible enhancement might be to abort traversal on error.
1531 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
1532 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
1537 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
1538 return (AE_BAD_PARAMETER);
1540 /* Iterate over components */
1542 comp = pkg->Package.Elements;
1543 for (; i < pkg->Package.Count; i++, comp++)
1550 * Find the (index)th resource object in a set.
1553 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
1558 rp = (ACPI_RESOURCE *)buf->Pointer;
1562 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
1563 return (AE_BAD_PARAMETER);
1565 /* Check for terminator */
1566 if (rp->Id == ACPI_RSTYPE_END_TAG || rp->Length == 0)
1567 return (AE_NOT_FOUND);
1568 rp = ACPI_NEXT_RESOURCE(rp);
1577 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
1579 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
1580 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
1581 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
1584 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
1587 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
1592 /* Initialise the buffer if necessary. */
1593 if (buf->Pointer == NULL) {
1594 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
1595 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
1596 return (AE_NO_MEMORY);
1597 rp = (ACPI_RESOURCE *)buf->Pointer;
1598 rp->Id = ACPI_RSTYPE_END_TAG;
1605 * Scan the current buffer looking for the terminator.
1606 * This will either find the terminator or hit the end
1607 * of the buffer and return an error.
1609 rp = (ACPI_RESOURCE *)buf->Pointer;
1611 /* Range check, don't go outside the buffer */
1612 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
1613 return (AE_BAD_PARAMETER);
1614 if (rp->Id == ACPI_RSTYPE_END_TAG || rp->Length == 0)
1616 rp = ACPI_NEXT_RESOURCE(rp);
1620 * Check the size of the buffer and expand if required.
1623 * size of existing resources before terminator +
1624 * size of new resource and header +
1625 * size of terminator.
1627 * Note that this loop should really only run once, unless
1628 * for some reason we are stuffing a *really* huge resource.
1630 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
1631 res->Length + ACPI_RESOURCE_LENGTH_NO_DATA +
1632 ACPI_RESOURCE_LENGTH) >= buf->Length) {
1633 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
1634 return (AE_NO_MEMORY);
1635 bcopy(buf->Pointer, newp, buf->Length);
1636 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
1637 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
1638 AcpiOsFree(buf->Pointer);
1639 buf->Pointer = newp;
1640 buf->Length += buf->Length;
1643 /* Insert the new resource. */
1644 bcopy(res, rp, res->Length + ACPI_RESOURCE_LENGTH_NO_DATA);
1646 /* And add the terminator. */
1647 rp = ACPI_NEXT_RESOURCE(rp);
1648 rp->Id = ACPI_RSTYPE_END_TAG;
1655 * Set interrupt model.
1658 acpi_SetIntrModel(int model)
1660 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
1663 #define ACPI_MINIMUM_AWAKETIME 5
1666 acpi_sleep_enable(void *arg)
1668 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
1672 * Set the system sleep state
1674 * Currently we support S1-S5 but S4 is only S4BIOS
1677 acpi_SetSleepState(struct acpi_softc *sc, int state)
1679 ACPI_STATUS status = AE_OK;
1683 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
1686 /* Avoid reentry if already attempting to suspend. */
1687 if (sc->acpi_sstate != ACPI_STATE_S0)
1688 return_ACPI_STATUS (AE_BAD_PARAMETER);
1690 /* We recently woke up so don't suspend again for a while. */
1691 if (sc->acpi_sleep_disabled)
1692 return_ACPI_STATUS (AE_OK);
1699 status = AcpiGetSleepTypeData((UINT8)state, &TypeA, &TypeB);
1700 if (status == AE_NOT_FOUND) {
1701 device_printf(sc->acpi_dev,
1702 "Sleep state S%d not supported by BIOS\n", state);
1704 } else if (ACPI_FAILURE(status)) {
1705 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
1706 AcpiFormatException(status));
1710 sc->acpi_sstate = state;
1711 sc->acpi_sleep_disabled = 1;
1713 /* Disable all wake GPEs not appropriate for this state. */
1714 acpi_wake_limit_walk(state);
1716 /* Inform all devices that we are going to sleep. */
1717 if (DEVICE_SUSPEND(root_bus) != 0) {
1719 * Re-wake the system.
1721 * XXX note that a better two-pass approach with a 'veto' pass
1722 * followed by a "real thing" pass would be better, but the
1723 * current bus interface does not provide for this.
1725 DEVICE_RESUME(root_bus);
1726 return_ACPI_STATUS (AE_ERROR);
1729 status = AcpiEnterSleepStatePrep(state);
1730 if (ACPI_FAILURE(status)) {
1731 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
1732 AcpiFormatException(status));
1736 if (sc->acpi_sleep_delay > 0)
1737 DELAY(sc->acpi_sleep_delay * 1000000);
1739 if (state != ACPI_STATE_S1) {
1740 acpi_sleep_machdep(sc, state);
1742 /* AcpiEnterSleepState() may be incomplete, unlock if locked. */
1743 if (AcpiGbl_MutexInfo[ACPI_MTX_HARDWARE].OwnerId !=
1744 ACPI_MUTEX_NOT_ACQUIRED) {
1746 AcpiUtReleaseMutex(ACPI_MTX_HARDWARE);
1749 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
1750 if (state == ACPI_STATE_S4)
1753 status = AcpiEnterSleepState((UINT8)state);
1754 if (ACPI_FAILURE(status)) {
1755 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
1756 AcpiFormatException(status));
1760 AcpiLeaveSleepState((UINT8)state);
1761 DEVICE_RESUME(root_bus);
1762 sc->acpi_sstate = ACPI_STATE_S0;
1763 acpi_enable_fixed_events(sc);
1767 * Shut down cleanly and power off. This will call us back through the
1768 * shutdown handlers.
1770 shutdown_nice(RB_POWEROFF);
1774 status = AE_BAD_PARAMETER;
1778 /* Disable a second sleep request for a short period */
1779 if (sc->acpi_sleep_disabled)
1780 timeout(acpi_sleep_enable, (caddr_t)sc, hz * ACPI_MINIMUM_AWAKETIME);
1782 return_ACPI_STATUS (status);
1785 /* Initialize a device's wake GPE. */
1787 acpi_wake_init(device_t dev, int type)
1789 struct acpi_prw_data prw;
1791 /* Check that the device can wake the system. */
1792 if ((device_get_flags(dev) & ACPI_FLAG_WAKE_CAPABLE) == 0)
1795 /* Evaluate _PRW to find the GPE. */
1796 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
1799 /* Set the requested type for the GPE (runtime, wake, or both). */
1800 if (ACPI_FAILURE(AcpiSetGpeType(prw.gpe_handle, prw.gpe_bit, type))) {
1801 device_printf(dev, "set GPE type failed\n");
1808 /* Enable or disable the device's wake GPE. */
1810 acpi_wake_set_enable(device_t dev, int enable)
1812 struct acpi_prw_data prw;
1817 /* Make sure the device supports waking the system. */
1818 flags = device_get_flags(dev);
1819 handle = acpi_get_handle(dev);
1820 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
1823 /* Evaluate _PRW to find the GPE. */
1824 if (acpi_parse_prw(handle, &prw) != 0)
1828 status = AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1829 if (ACPI_FAILURE(status)) {
1830 device_printf(dev, "enable wake failed\n");
1833 device_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
1835 status = AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1836 if (ACPI_FAILURE(status)) {
1837 device_printf(dev, "disable wake failed\n");
1840 device_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
1846 /* Configure a device's GPE appropriately for the new sleep state. */
1848 acpi_wake_sleep_prep(device_t dev, int sstate)
1850 struct acpi_prw_data prw;
1854 /* Check that this is an ACPI device and get its GPE. */
1855 flags = device_get_flags(dev);
1856 handle = acpi_get_handle(dev);
1857 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
1860 /* Evaluate _PRW to find the GPE. */
1861 if (acpi_parse_prw(handle, &prw) != 0)
1865 * TBD: All Power Resources referenced by elements 2 through N
1866 * of the _PRW object are put into the ON state.
1870 * If the user requested that this device wake the system and the next
1871 * sleep state is valid for this GPE, enable it and the device's wake
1872 * capability. The sleep state must be less than (i.e., higher power)
1873 * or equal to the value specified by _PRW. Return early, leaving
1874 * the appropriate power resources enabled.
1876 if ((flags & ACPI_FLAG_WAKE_ENABLED) != 0 &&
1877 sstate <= prw.lowest_wake) {
1879 device_printf(dev, "wake_prep enabled gpe %#x for state %d\n",
1880 prw.gpe_bit, sstate);
1881 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1882 acpi_SetInteger(handle, "_PSW", 1);
1887 * If the device wake was disabled or this sleep state is too low for
1888 * this device, disable its wake capability and GPE.
1890 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1891 acpi_SetInteger(handle, "_PSW", 0);
1893 device_printf(dev, "wake_prep disabled gpe %#x for state %d\n",
1894 prw.gpe_bit, sstate);
1897 * TBD: All Power Resources referenced by elements 2 through N
1898 * of the _PRW object are put into the OFF state.
1904 /* Re-enable GPEs after wake. */
1906 acpi_wake_run_prep(device_t dev)
1908 struct acpi_prw_data prw;
1912 /* Check that this is an ACPI device and get its GPE. */
1913 flags = device_get_flags(dev);
1914 handle = acpi_get_handle(dev);
1915 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
1918 /* Evaluate _PRW to find the GPE. */
1919 if (acpi_parse_prw(handle, &prw) != 0)
1923 * TBD: Be sure all Power Resources referenced by elements 2 through N
1924 * of the _PRW object are in the ON state.
1927 /* Disable wake capability and if the user requested, enable the GPE. */
1928 acpi_SetInteger(handle, "_PSW", 0);
1929 if ((flags & ACPI_FLAG_WAKE_ENABLED) != 0)
1930 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1935 acpi_wake_limit(ACPI_HANDLE h, UINT32 level, void *context, void **status)
1937 struct acpi_prw_data prw;
1940 /* It's ok not to have _PRW if the device can't wake the system. */
1941 if (acpi_parse_prw(h, &prw) != 0)
1944 sstate = (int *)context;
1945 if (*sstate > prw.lowest_wake)
1946 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1951 /* Walk all system devices, disabling them if necessary for sstate. */
1953 acpi_wake_limit_walk(int sstate)
1955 ACPI_HANDLE sb_handle;
1957 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
1958 AcpiWalkNamespace(ACPI_TYPE_ANY, sb_handle, 100,
1959 acpi_wake_limit, &sstate, NULL);
1963 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
1965 acpi_wake_sysctl_walk(device_t dev)
1967 int error, i, numdevs;
1971 error = device_get_children(dev, &devlist, &numdevs);
1972 if (error != 0 || numdevs == 0)
1974 for (i = 0; i < numdevs; i++) {
1976 if (!device_is_attached(child))
1978 if (device_get_flags(child) & ACPI_FLAG_WAKE_CAPABLE) {
1980 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
1981 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
1982 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
1983 acpi_wake_set_sysctl, "I", "Device set to wake the system");
1984 #endif /* dfly_notyet */
1986 acpi_wake_sysctl_walk(child);
1988 free(devlist, M_TEMP);
1993 /* Enable or disable wake from userland. */
1995 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2000 dev = (device_t)arg1;
2001 enable = (device_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
2003 error = sysctl_handle_int(oidp, &enable, 0, req);
2004 if (error != 0 || req->newptr == NULL)
2006 if (enable != 0 && enable != 1)
2009 return (acpi_wake_set_enable(dev, enable));
2012 /* Parse a device's _PRW into a structure. */
2014 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2017 ACPI_BUFFER prw_buffer;
2018 ACPI_OBJECT *res, *res2;
2021 if (h == NULL || prw == NULL)
2025 * The _PRW object (7.2.9) is only required for devices that have the
2026 * ability to wake the system from a sleeping state.
2029 prw_buffer.Pointer = NULL;
2030 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2031 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2032 if (ACPI_FAILURE(status))
2034 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2037 if (!ACPI_PKG_VALID(res, 2))
2041 * Element 1 of the _PRW object:
2042 * The lowest power system sleeping state that can be entered while still
2043 * providing wake functionality. The sleeping state being entered must
2044 * be less than (i.e., higher power) or equal to this value.
2046 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2050 * Element 0 of the _PRW object:
2052 switch (res->Package.Elements[0].Type) {
2053 case ACPI_TYPE_INTEGER:
2055 * If the data type of this package element is numeric, then this
2056 * _PRW package element is the bit index in the GPEx_EN, in the
2057 * GPE blocks described in the FADT, of the enable bit that is
2058 * enabled for the wake event.
2060 prw->gpe_handle = NULL;
2061 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2064 case ACPI_TYPE_PACKAGE:
2066 * If the data type of this package element is a package, then this
2067 * _PRW package element is itself a package containing two
2068 * elements. The first is an object reference to the GPE Block
2069 * device that contains the GPE that will be triggered by the wake
2070 * event. The second element is numeric and it contains the bit
2071 * index in the GPEx_EN, in the GPE Block referenced by the
2072 * first element in the package, of the enable bit that is enabled for
2075 * For example, if this field is a package then it is of the form:
2076 * Package() {\_SB.PCI0.ISA.GPE, 2}
2078 res2 = &res->Package.Elements[0];
2079 if (!ACPI_PKG_VALID(res2, 2))
2081 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2082 if (prw->gpe_handle == NULL)
2084 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2092 /* XXX No power resource handling yet. */
2093 prw->power_res = NULL;
2096 if (prw_buffer.Pointer != NULL)
2097 AcpiOsFree(prw_buffer.Pointer);
2102 * Enable/Disable ACPI
2105 acpi_Enable(struct acpi_softc *sc)
2110 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2113 flags = ACPI_NO_ADDRESS_SPACE_INIT | ACPI_NO_HARDWARE_INIT |
2114 ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
2115 if (!sc->acpi_enabled)
2116 status = AcpiEnableSubsystem(flags);
2120 if (status == AE_OK)
2121 sc->acpi_enabled = 1;
2123 return_ACPI_STATUS (status);
2127 acpi_Disable(struct acpi_softc *sc)
2131 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2134 if (sc->acpi_enabled)
2135 status = AcpiDisable();
2139 if (status == AE_OK)
2140 sc->acpi_enabled = 0;
2142 return_ACPI_STATUS (status);
2146 * ACPI Event Handlers
2149 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2152 acpi_system_eventhandler_sleep(void *arg, int state)
2155 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2158 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
2159 acpi_SetSleepState((struct acpi_softc *)arg, state);
2165 acpi_system_eventhandler_wakeup(void *arg, int state)
2168 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2170 /* Well, what to do? :-) */
2179 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2182 acpi_event_power_button_sleep(void *context)
2184 struct acpi_softc *sc = (struct acpi_softc *)context;
2186 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2188 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2190 return_VALUE (ACPI_INTERRUPT_HANDLED);
2194 acpi_event_power_button_wake(void *context)
2196 struct acpi_softc *sc = (struct acpi_softc *)context;
2198 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2200 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2202 return_VALUE (ACPI_INTERRUPT_HANDLED);
2206 acpi_event_sleep_button_sleep(void *context)
2208 struct acpi_softc *sc = (struct acpi_softc *)context;
2210 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2212 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2214 return_VALUE (ACPI_INTERRUPT_HANDLED);
2218 acpi_event_sleep_button_wake(void *context)
2220 struct acpi_softc *sc = (struct acpi_softc *)context;
2222 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2224 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2226 return_VALUE (ACPI_INTERRUPT_HANDLED);
2230 * XXX This is kinda ugly, and should not be here.
2232 struct acpi_staticbuf {
2238 acpi_name(ACPI_HANDLE handle)
2240 static struct acpi_staticbuf buf;
2244 buf.buffer.Length = 512;
2245 buf.buffer.Pointer = &buf.data[0];
2247 if (ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer)))
2248 return (buf.buffer.Pointer);
2250 return ("(unknown path)");
2254 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2255 * parts of the namespace.
2258 acpi_avoid(ACPI_HANDLE handle)
2260 char *cp, *env, *np;
2263 np = acpi_name(handle);
2266 if ((env = getenv("debug.acpi.avoid")) == NULL)
2269 /* Scan the avoid list checking for a match */
2272 while ((*cp != 0) && isspace(*cp))
2277 while ((cp[len] != 0) && !isspace(cp[len]))
2279 if (!strncmp(cp, np, len)) {
2291 * Debugging/bug-avoidance. Disable ACPI subsystem components.
2294 acpi_disabled(char *subsys)
2299 if ((env = getenv("debug.acpi.disabled")) == NULL)
2301 if (strcmp(env, "all") == 0) {
2306 /* Scan the disable list, checking for a match. */
2309 while (*cp != '\0' && isspace(*cp))
2314 while (cp[len] != '\0' && !isspace(cp[len]))
2316 if (strncmp(cp, subsys, len) == 0) {
2328 * Control interface.
2330 * We multiplex ioctls for all participating ACPI devices here. Individual
2331 * drivers wanting to be accessible via /dev/acpi should use the
2332 * register/deregister interface to make their handlers visible.
2334 struct acpi_ioctl_hook
2336 TAILQ_ENTRY(acpi_ioctl_hook) link;
2342 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
2343 static int acpi_ioctl_hooks_initted;
2346 * Register an ioctl handler.
2349 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
2351 struct acpi_ioctl_hook *hp;
2353 hp = malloc(sizeof(*hp), M_ACPIDEV, M_INTWAIT);
2357 if (acpi_ioctl_hooks_initted == 0) {
2358 TAILQ_INIT(&acpi_ioctl_hooks);
2359 acpi_ioctl_hooks_initted = 1;
2361 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
2366 * Deregister an ioctl handler.
2369 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
2371 struct acpi_ioctl_hook *hp;
2373 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
2374 if ((hp->cmd == cmd) && (hp->fn == fn))
2378 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
2379 free(hp, M_ACPIDEV);
2384 acpiopen(dev_t dev, int flag, int fmt, d_thread_t *td)
2390 acpiclose(dev_t dev, int flag, int fmt, d_thread_t *td)
2396 acpiioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
2398 struct acpi_softc *sc;
2399 struct acpi_ioctl_hook *hp;
2400 int error, xerror, state;
2409 * Scan the list of registered ioctls, looking for handlers.
2411 if (acpi_ioctl_hooks_initted) {
2412 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
2413 if (hp->cmd == cmd) {
2414 xerror = hp->fn(cmd, addr, hp->arg);
2423 * Core ioctls are not permitted for non-writable user.
2424 * Currently, other ioctls just fetch information.
2425 * Not changing system behavior.
2427 if((flag & FWRITE) == 0)
2430 /* Core system ioctls. */
2433 if (ACPI_FAILURE(acpi_Enable(sc)))
2436 case ACPIIO_DISABLE:
2437 if (ACPI_FAILURE(acpi_Disable(sc)))
2440 case ACPIIO_SETSLPSTATE:
2441 if (!sc->acpi_enabled) {
2445 state = *(int *)addr;
2446 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) {
2447 if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
2465 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2467 char sleep_state[4];
2470 UINT8 state, TypeA, TypeB;
2473 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++) {
2474 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
2475 sprintf(sleep_state, "S%d ", state);
2476 strcat(buf, sleep_state);
2479 error = sysctl_handle_string(oidp, buf, sizeof(buf), req);
2484 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2486 char sleep_state[10];
2488 u_int new_state, old_state;
2490 old_state = *(u_int *)oidp->oid_arg1;
2491 if (old_state > ACPI_S_STATES_MAX + 1) {
2492 strcpy(sleep_state, "unknown");
2494 bzero(sleep_state, sizeof(sleep_state));
2495 strncpy(sleep_state, sleep_state_names[old_state],
2496 sizeof(sleep_state_names[old_state]));
2498 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
2499 if (error == 0 && req->newptr != NULL) {
2500 new_state = ACPI_STATE_S0;
2501 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++) {
2502 if (strncmp(sleep_state, sleep_state_names[new_state],
2503 sizeof(sleep_state)) == 0)
2506 if (new_state <= ACPI_S_STATES_MAX + 1) {
2507 if (new_state != old_state)
2508 *(u_int *)oidp->oid_arg1 = new_state;
2517 /* Inform devctl(4) when we receive a Notify. */
2519 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
2521 char notify_buf[16];
2522 ACPI_BUFFER handle_buf;
2525 if (subsystem == NULL)
2528 handle_buf.Pointer = NULL;
2529 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
2530 status = AcpiNsHandleToPathname(h, &handle_buf);
2531 if (ACPI_FAILURE(status))
2533 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
2535 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
2537 AcpiOsFree(handle_buf.Pointer);
2542 * Support for parsing debug options from the kernel environment.
2544 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
2545 * by specifying the names of the bits in the debug.acpi.layer and
2546 * debug.acpi.level environment variables. Bits may be unset by
2547 * prefixing the bit name with !.
2555 static struct debugtag dbg_layer[] = {
2556 {"ACPI_UTILITIES", ACPI_UTILITIES},
2557 {"ACPI_HARDWARE", ACPI_HARDWARE},
2558 {"ACPI_EVENTS", ACPI_EVENTS},
2559 {"ACPI_TABLES", ACPI_TABLES},
2560 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
2561 {"ACPI_PARSER", ACPI_PARSER},
2562 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
2563 {"ACPI_EXECUTER", ACPI_EXECUTER},
2564 {"ACPI_RESOURCES", ACPI_RESOURCES},
2565 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
2566 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
2567 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
2568 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
2570 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
2571 {"ACPI_BATTERY", ACPI_BATTERY},
2572 {"ACPI_BUS", ACPI_BUS},
2573 {"ACPI_BUTTON", ACPI_BUTTON},
2574 {"ACPI_EC", ACPI_EC},
2575 {"ACPI_FAN", ACPI_FAN},
2576 {"ACPI_POWERRES", ACPI_POWERRES},
2577 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
2578 {"ACPI_THERMAL", ACPI_THERMAL},
2579 {"ACPI_TIMER", ACPI_TIMER},
2580 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
2584 static struct debugtag dbg_level[] = {
2585 {"ACPI_LV_ERROR", ACPI_LV_ERROR},
2586 {"ACPI_LV_WARN", ACPI_LV_WARN},
2587 {"ACPI_LV_INIT", ACPI_LV_INIT},
2588 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
2589 {"ACPI_LV_INFO", ACPI_LV_INFO},
2590 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
2592 /* Trace verbosity level 1 [Standard Trace Level] */
2593 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
2594 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
2595 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
2596 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
2597 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
2598 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
2599 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
2600 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
2601 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
2602 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
2603 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
2604 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
2605 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
2606 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
2607 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
2609 /* Trace verbosity level 2 [Function tracing and memory allocation] */
2610 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
2611 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
2612 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
2613 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
2614 {"ACPI_LV_ALL", ACPI_LV_ALL},
2616 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
2617 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
2618 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
2619 {"ACPI_LV_IO", ACPI_LV_IO},
2620 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
2621 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
2623 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
2624 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
2625 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
2626 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
2627 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
2628 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
2633 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
2645 while (*ep && !isspace(*ep))
2656 for (i = 0; tag[i].name != NULL; i++) {
2657 if (!strncmp(cp, tag[i].name, l)) {
2659 *flag |= tag[i].value;
2661 *flag &= ~tag[i].value;
2669 acpi_set_debugging(void *junk)
2671 char *layer, *level;
2678 layer = getenv("debug.acpi.layer");
2679 level = getenv("debug.acpi.level");
2680 if (layer == NULL && level == NULL)
2683 printf("ACPI set debug");
2684 if (layer != NULL) {
2685 if (strcmp("NONE", layer) != 0)
2686 printf(" layer '%s'", layer);
2687 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
2690 if (level != NULL) {
2691 if (strcmp("NONE", level) != 0)
2692 printf(" level '%s'", level);
2693 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
2698 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
2702 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
2705 struct debugtag *tag;
2708 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
2710 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
2711 tag = &dbg_layer[0];
2712 dbg = &AcpiDbgLayer;
2714 tag = &dbg_level[0];
2715 dbg = &AcpiDbgLevel;
2718 /* Get old values if this is a get request. */
2720 sbuf_cpy(&sb, "NONE");
2721 } else if (req->newptr == NULL) {
2722 for (; tag->name != NULL; tag++) {
2723 if ((*dbg & tag->value) == tag->value)
2724 sbuf_printf(&sb, "%s ", tag->name);
2730 /* Copy out the old values to the user. */
2731 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
2734 /* If the user is setting a string, parse it. */
2735 if (error == 0 && req->newptr != NULL) {
2737 /* XXX setenv((char *)oidp->oid_arg1, (char *)req->newptr); */
2738 acpi_set_debugging(NULL);
2743 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
2744 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
2745 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
2746 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
2750 acpi_pm_func(u_long cmd, void *arg, ...)
2752 int state, acpi_state;
2754 struct acpi_softc *sc;
2759 case POWER_CMD_SUSPEND:
2760 sc = (struct acpi_softc *)arg;
2767 state = va_arg(ap, int);
2771 case POWER_SLEEP_STATE_STANDBY:
2772 acpi_state = sc->acpi_standby_sx;
2774 case POWER_SLEEP_STATE_SUSPEND:
2775 acpi_state = sc->acpi_suspend_sx;
2777 case POWER_SLEEP_STATE_HIBERNATE:
2778 acpi_state = ACPI_STATE_S4;
2785 acpi_SetSleepState(sc, acpi_state);
2797 acpi_pm_register(void *arg)
2799 if (!cold || resource_disabled("acpi", 0))
2802 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
2805 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);