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 1.6 2004/07/05 00:07:35 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 #ifdef ACPI_USE_THREADS
600 if ((error = acpi_task_thread_init()))
604 if ((error = acpi_machdep_init(dev)))
607 /* Register ACPI again to pass the correct argument of pm_func. */
608 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
610 if (!acpi_disabled("bus"))
611 acpi_probe_children(dev);
617 return_VALUE (error);
621 acpi_shutdown(device_t dev)
624 /* Disable all wake GPEs not appropriate for reboot/poweroff. */
625 acpi_wake_limit_walk(ACPI_STATE_S5);
632 XSDT_DESCRIPTOR *xsdt;
633 struct acpi_quirks *quirk;
638 * If the user loaded a custom table or disabled "quirks", leave
639 * the settings alone.
642 if ((env = getenv("acpi_dsdt_load")) != NULL) {
643 /* XXX No strcasecmp but this is good enough. */
644 if (*env == 'Y' || *env == 'y')
648 if ((env = getenv("debug.acpi.disabled")) != NULL) {
649 if (strstr("quirks", env) != NULL)
655 * Search through our quirk table and concatenate the disabled
656 * values with whatever we find.
659 for (quirk = acpi_quirks_table; quirk->OemId; quirk++) {
660 if (!strncmp(xsdt->OemId, quirk->OemId, strlen(quirk->OemId)) &&
661 (xsdt->OemRevision == quirk->OemRevision ||
662 quirk->OemRevision == ACPI_OEM_REV_ANY)) {
663 len += strlen(quirk->value) + 2;
664 if ((tmp = malloc(len, M_TEMP, M_NOWAIT)) == NULL)
666 sprintf(tmp, "%s %s", env ? env : "", quirk->value);
668 setenv("debug.acpi.disabled", tmp);
681 * Handle a new device being added
684 acpi_add_child(device_t bus, int order, const char *name, int unit)
686 struct acpi_device *ad;
689 ad = malloc(sizeof(*ad), M_ACPIDEV, M_INTWAIT | M_ZERO);
691 resource_list_init(&ad->ad_rl);
693 child = device_add_child_ordered(bus, order, name, unit);
695 device_set_ivars(child, ad);
700 acpi_print_child(device_t bus, device_t child)
702 struct acpi_device *adev = device_get_ivars(child);
703 struct resource_list *rl = &adev->ad_rl;
706 retval += bus_print_child_header(bus, child);
707 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
708 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
709 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
710 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
711 retval += bus_print_child_footer(bus, child);
716 /* Location hint for devctl(8) */
718 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
721 struct acpi_device *dinfo = device_get_ivars(child);
723 if (dinfo->ad_handle)
724 snprintf(buf, buflen, "path=%s", acpi_name(dinfo->ad_handle));
726 snprintf(buf, buflen, "magic=unknown");
730 /* PnP information for devctl(8) */
732 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
735 ACPI_BUFFER adbuf = {ACPI_ALLOCATE_BUFFER, NULL};
736 ACPI_DEVICE_INFO *adinfo;
737 struct acpi_device *dinfo = device_get_ivars(child);
741 error = AcpiGetObjectInfo(dinfo->ad_handle, &adbuf);
742 adinfo = (ACPI_DEVICE_INFO *) adbuf.Pointer;
745 snprintf(buf, buflen, "Unknown");
747 snprintf(buf, buflen, "_HID=%s _UID=%lu",
748 (adinfo->Valid & ACPI_VALID_HID) ?
749 adinfo->HardwareId.Value : "UNKNOWN",
750 (adinfo->Valid & ACPI_VALID_UID) ?
751 strtoul(adinfo->UniqueId.Value, &end, 10) : 0);
760 * Handle per-device ivars
763 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
765 struct acpi_device *ad;
767 if ((ad = device_get_ivars(child)) == NULL) {
768 printf("device has no ivars\n");
772 /* ACPI and ISA compatibility ivars */
774 case ACPI_IVAR_HANDLE:
775 *(ACPI_HANDLE *)result = ad->ad_handle;
777 case ACPI_IVAR_MAGIC:
778 *(int *)result = ad->ad_magic;
780 case ACPI_IVAR_PRIVATE:
781 *(void **)result = ad->ad_private;
783 case ISA_IVAR_VENDORID:
784 case ISA_IVAR_SERIAL:
785 case ISA_IVAR_COMPATID:
788 case ISA_IVAR_LOGICALID:
789 *(int *)result = acpi_isa_get_logicalid(child);
799 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
801 struct acpi_device *ad;
803 if ((ad = device_get_ivars(child)) == NULL) {
804 printf("device has no ivars\n");
809 case ACPI_IVAR_HANDLE:
810 ad->ad_handle = (ACPI_HANDLE)value;
812 case ACPI_IVAR_MAGIC:
813 ad->ad_magic = (int)value;
815 case ACPI_IVAR_PRIVATE:
816 ad->ad_private = (void *)value;
819 panic("bad ivar write request (%d)", index);
827 * Handle child resource allocation/removal
830 acpi_set_resource(device_t dev, device_t child, int type, int rid,
831 u_long start, u_long count)
833 struct acpi_device *ad = device_get_ivars(child);
834 struct resource_list *rl = &ad->ad_rl;
836 resource_list_add(rl, type, rid, start, start + count -1, count);
842 acpi_get_resource(device_t dev, device_t child, int type, int rid,
843 u_long *startp, u_long *countp)
845 struct acpi_device *ad = device_get_ivars(child);
846 struct resource_list *rl = &ad->ad_rl;
847 struct resource_list_entry *rle;
849 rle = resource_list_find(rl, type, rid);
854 *startp = rle->start;
856 *countp = rle->count;
861 static struct resource *
862 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
863 u_long start, u_long end, u_long count, u_int flags)
865 struct acpi_device *ad = device_get_ivars(child);
866 struct resource_list *rl = &ad->ad_rl;
868 return (resource_list_alloc(rl, bus, child, type, rid, start, end, count,
873 acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r)
875 struct acpi_device *ad = device_get_ivars(child);
876 struct resource_list *rl = &ad->ad_rl;
878 return (resource_list_release(rl, bus, child, type, rid, r));
881 /* Allocate an IO port or memory resource, given its GAS. */
883 acpi_bus_alloc_gas(device_t dev, int *rid, ACPI_GENERIC_ADDRESS *gas)
887 if (gas == NULL || !ACPI_VALID_ADDRESS(gas->Address) ||
888 gas->RegisterBitWidth < 8)
891 switch (gas->AddressSpaceId) {
892 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
893 type = SYS_RES_MEMORY;
895 case ACPI_ADR_SPACE_SYSTEM_IO:
896 type = SYS_RES_IOPORT;
902 bus_set_resource(dev, type, *rid, gas->Address, gas->RegisterBitWidth / 8);
903 return (bus_alloc_resource_any(dev, type, rid, RF_ACTIVE));
907 * Handle ISA-like devices probing for a PnP ID to match.
909 #define PNP_EISAID(s) \
910 ((((s[0] - '@') & 0x1f) << 2) \
911 | (((s[1] - '@') & 0x18) >> 3) \
912 | (((s[1] - '@') & 0x07) << 13) \
913 | (((s[2] - '@') & 0x1f) << 8) \
914 | (PNP_HEXTONUM(s[4]) << 16) \
915 | (PNP_HEXTONUM(s[3]) << 20) \
916 | (PNP_HEXTONUM(s[6]) << 24) \
917 | (PNP_HEXTONUM(s[5]) << 28))
920 acpi_isa_get_logicalid(device_t dev)
922 ACPI_DEVICE_INFO *devinfo;
929 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
933 buf.Length = ACPI_ALLOCATE_BUFFER;
937 /* Fetch and validate the HID. */
938 if ((h = acpi_get_handle(dev)) == NULL)
940 error = AcpiGetObjectInfo(h, &buf);
941 if (ACPI_FAILURE(error))
943 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
945 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
946 pnpid = PNP_EISAID(devinfo->HardwareId.Value);
949 if (buf.Pointer != NULL)
950 AcpiOsFree(buf.Pointer);
952 return_VALUE (pnpid);
956 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
958 ACPI_DEVICE_INFO *devinfo;
966 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
971 buf.Length = ACPI_ALLOCATE_BUFFER;
975 /* Fetch and validate the CID */
976 if ((h = acpi_get_handle(dev)) == NULL)
978 error = AcpiGetObjectInfo(h, &buf);
979 if (ACPI_FAILURE(error))
981 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
982 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
985 if (devinfo->CompatibilityId.Count < count)
986 count = devinfo->CompatibilityId.Count;
987 for (i = 0; i < count; i++) {
988 if (strncmp(devinfo->CompatibilityId.Id[i].Value, "PNP", 3) != 0)
990 *pnpid++ = PNP_EISAID(devinfo->CompatibilityId.Id[i].Value);
995 if (buf.Pointer != NULL)
996 AcpiOsFree(buf.Pointer);
998 return_VALUE (valid);
1002 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1004 int result, cid_count, i;
1005 uint32_t lid, cids[8];
1007 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1010 * ISA-style drivers attached to ACPI may persist and
1011 * probe manually if we return ENOENT. We never want
1012 * that to happen, so don't ever return it.
1016 /* Scan the supplied IDs for a match */
1017 lid = acpi_isa_get_logicalid(child);
1018 cid_count = acpi_isa_get_compatid(child, cids, 8);
1019 while (ids && ids->ip_id) {
1020 if (lid == ids->ip_id) {
1024 for (i = 0; i < cid_count; i++) {
1025 if (cids[i] == ids->ip_id) {
1034 return_VALUE (result);
1038 * Scan relevant portions of the ACPI namespace and attach child devices.
1040 * Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and
1041 * \_SB_ scopes, and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec.
1044 acpi_probe_children(device_t bus)
1048 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL};
1051 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1054 /* Create any static children by calling device identify methods. */
1055 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1056 bus_generic_probe(bus);
1059 * Scan the namespace and insert placeholders for all the devices that
1062 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1063 * we want to create nodes for all devices, not just those that are
1064 * currently present. (This assumes that we don't want to create/remove
1065 * devices as they appear, which might be smarter.)
1067 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1068 for (i = 0; scopes[i] != NULL; i++) {
1069 status = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent);
1070 if (ACPI_SUCCESS(status)) {
1071 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, acpi_probe_child,
1077 * Scan all of the child devices we have created and let them probe/attach.
1079 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1080 bus_generic_attach(bus);
1083 * Some of these children may have attached others as part of their attach
1084 * process (eg. the root PCI bus driver), so rescan.
1086 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1087 bus_generic_attach(bus);
1089 /* Attach wake sysctls. */
1090 acpi_wake_sysctl_walk(bus);
1092 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1097 * Evaluate a child device and determine whether we might attach a device to
1101 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1103 ACPI_OBJECT_TYPE type;
1104 device_t child, bus = (device_t)context;
1106 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1108 /* Skip this device if we think we'll have trouble with it. */
1109 if (acpi_avoid(handle))
1110 return_ACPI_STATUS (AE_OK);
1112 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1114 case ACPI_TYPE_DEVICE:
1115 case ACPI_TYPE_PROCESSOR:
1116 case ACPI_TYPE_THERMAL:
1117 case ACPI_TYPE_POWER:
1118 if (acpi_disabled("children"))
1122 * Create a placeholder device for this node. Sort the placeholder
1123 * so that the probe/attach passes will run breadth-first.
1125 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n",
1126 acpi_name(handle)));
1127 child = BUS_ADD_CHILD(bus, level * 10, NULL, -1);
1130 acpi_set_handle(child, handle);
1132 /* Check if the device can generate wake events. */
1133 if (ACPI_SUCCESS(AcpiEvaluateObject(handle, "_PRW", NULL, NULL)))
1134 device_set_flags(child, ACPI_FLAG_WAKE_CAPABLE);
1137 * Check that the device is present. If it's not present,
1138 * leave it disabled (so that we have a device_t attached to
1139 * the handle, but we don't probe it).
1141 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1142 device_disable(child);
1147 * Get the device's resource settings and attach them.
1148 * Note that if the device has _PRS but no _CRS, we need
1149 * to decide when it's appropriate to try to configure the
1150 * device. Ignore the return value here; it's OK for the
1151 * device not to have any resources.
1153 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
1155 /* If we're debugging, probe/attach now rather than later */
1156 ACPI_DEBUG_EXEC(device_probe_and_attach(child));
1161 return_ACPI_STATUS (AE_OK);
1165 acpi_shutdown_pre_sync(void *arg, int howto)
1167 struct acpi_softc *sc = arg;
1172 * Disable all ACPI events before soft off, otherwise the system
1173 * will be turned on again on some laptops.
1175 * XXX this should probably be restricted to masking some events just
1176 * before powering down, since we may still need ACPI during the
1179 if (sc->acpi_disable_on_poweroff)
1184 acpi_shutdown_final(void *arg, int howto)
1190 * If powering off, run the actual shutdown code on each processor.
1191 * It will only perform the shutdown on the BSP. Some chipsets do
1192 * not power off the system correctly if called from an AP.
1194 if ((howto & RB_POWEROFF) != 0) {
1195 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1196 if (ACPI_FAILURE(status)) {
1197 printf("AcpiEnterSleepStatePrep failed - %s\n",
1198 AcpiFormatException(status));
1201 printf("Powering system off using ACPI\n");
1203 smp_rendezvous(NULL, acpi_shutdown_poweroff, NULL, NULL);
1205 acpi_shutdown_poweroff(NULL);
1208 printf("Shutting down ACPI\n");
1214 * Since this function may be called with locks held or in an unknown
1215 * context, it cannot allocate memory, acquire locks, sleep, etc.
1218 acpi_shutdown_poweroff(void *arg)
1224 /* Only attempt to power off if this is the BSP (cpuid 0). */
1225 if (mdcpu->mi.gd_cpuid != 0)
1228 ACPI_DISABLE_IRQS();
1229 status = AcpiEnterSleepState(ACPI_STATE_S5);
1230 if (ACPI_FAILURE(status)) {
1231 printf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1234 printf("ACPI power-off failed - timeout\n");
1239 acpi_enable_fixed_events(struct acpi_softc *sc)
1241 static int first_time = 1;
1245 /* Enable and clear fixed events and install handlers. */
1246 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->PwrButton == 0) {
1247 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1248 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1249 acpi_event_power_button_sleep, sc);
1251 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1253 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->SleepButton == 0) {
1254 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1255 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1256 acpi_event_sleep_button_sleep, sc);
1258 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1265 * Returns true if the device is actually present and should
1266 * be attached to. This requires the present, enabled, UI-visible
1267 * and diagnostics-passed bits to be set.
1270 acpi_DeviceIsPresent(device_t dev)
1272 ACPI_DEVICE_INFO *devinfo;
1281 if ((h = acpi_get_handle(dev)) == NULL)
1284 buf.Length = ACPI_ALLOCATE_BUFFER;
1285 error = AcpiGetObjectInfo(h, &buf);
1286 if (ACPI_FAILURE(error))
1288 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1290 /* If no _STA method, must be present */
1291 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1294 /* Return true for 'present' and 'functioning' */
1295 if ((devinfo->CurrentStatus & 0x9) == 0x9)
1298 AcpiOsFree(buf.Pointer);
1303 * Returns true if the battery is actually present and inserted.
1306 acpi_BatteryIsPresent(device_t dev)
1308 ACPI_DEVICE_INFO *devinfo;
1317 if ((h = acpi_get_handle(dev)) == NULL)
1320 buf.Length = ACPI_ALLOCATE_BUFFER;
1321 error = AcpiGetObjectInfo(h, &buf);
1322 if (ACPI_FAILURE(error))
1324 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1326 /* If no _STA method, must be present */
1327 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1330 /* Return true for 'present' and 'functioning' */
1331 if ((devinfo->CurrentStatus & 0x19) == 0x19)
1334 AcpiOsFree(buf.Pointer);
1339 * Match a HID string against a device
1342 acpi_MatchHid(device_t dev, char *hid)
1344 ACPI_DEVICE_INFO *devinfo;
1355 if ((h = acpi_get_handle(dev)) == NULL)
1358 buf.Length = ACPI_ALLOCATE_BUFFER;
1359 error = AcpiGetObjectInfo(h, &buf);
1360 if (ACPI_FAILURE(error))
1362 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1364 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
1365 strcmp(hid, devinfo->HardwareId.Value) == 0)
1367 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
1368 for (i = 0; i < devinfo->CompatibilityId.Count; i++) {
1369 if (strcmp(hid, devinfo->CompatibilityId.Id[i].Value) == 0) {
1376 AcpiOsFree(buf.Pointer);
1381 * Return the handle of a named object within our scope, ie. that of (parent)
1382 * or one if its parents.
1385 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1392 /* Walk back up the tree to the root */
1394 status = AcpiGetHandle(parent, path, &r);
1395 if (ACPI_SUCCESS(status)) {
1399 if (status != AE_NOT_FOUND)
1401 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1402 return (AE_NOT_FOUND);
1407 /* Find the difference between two PM tick counts. */
1409 acpi_TimerDelta(uint32_t end, uint32_t start)
1414 delta = end - start;
1415 else if (AcpiGbl_FADT->TmrValExt == 0)
1416 delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
1418 delta = ((0xFFFFFFFF - start) + end + 1);
1423 * Allocate a buffer with a preset data size.
1426 acpi_AllocBuffer(int size)
1430 buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_INTWAIT);
1432 buf->Pointer = (void *)(buf + 1);
1437 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
1440 ACPI_OBJECT_LIST args;
1444 arg1.Type = ACPI_TYPE_INTEGER;
1445 arg1.Integer.Value = number;
1447 args.Pointer = &arg1;
1449 return (AcpiEvaluateObject(handle, path, &args, NULL));
1453 * Evaluate a path that should return an integer.
1456 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
1465 handle = ACPI_ROOT_OBJECT;
1468 * Assume that what we've been pointed at is an Integer object, or
1469 * a method that will return an Integer.
1471 buf.Pointer = ¶m;
1472 buf.Length = sizeof(param);
1473 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1474 if (ACPI_SUCCESS(status)) {
1475 if (param.Type == ACPI_TYPE_INTEGER)
1476 *number = param.Integer.Value;
1482 * In some applications, a method that's expected to return an Integer
1483 * may instead return a Buffer (probably to simplify some internal
1484 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1485 * convert it into an Integer as best we can.
1489 if (status == AE_BUFFER_OVERFLOW) {
1490 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
1491 status = AE_NO_MEMORY;
1493 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1494 if (ACPI_SUCCESS(status))
1495 status = acpi_ConvertBufferToInteger(&buf, number);
1496 AcpiOsFree(buf.Pointer);
1503 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
1509 p = (ACPI_OBJECT *)bufp->Pointer;
1510 if (p->Type == ACPI_TYPE_INTEGER) {
1511 *number = p->Integer.Value;
1514 if (p->Type != ACPI_TYPE_BUFFER)
1516 if (p->Buffer.Length > sizeof(int))
1517 return (AE_BAD_DATA);
1520 val = p->Buffer.Pointer;
1521 for (i = 0; i < p->Buffer.Length; i++)
1522 *number += val[i] << (i * 8);
1527 * Iterate over the elements of an a package object, calling the supplied
1528 * function for each element.
1530 * XXX possible enhancement might be to abort traversal on error.
1533 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
1534 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
1539 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
1540 return (AE_BAD_PARAMETER);
1542 /* Iterate over components */
1544 comp = pkg->Package.Elements;
1545 for (; i < pkg->Package.Count; i++, comp++)
1552 * Find the (index)th resource object in a set.
1555 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
1560 rp = (ACPI_RESOURCE *)buf->Pointer;
1564 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
1565 return (AE_BAD_PARAMETER);
1567 /* Check for terminator */
1568 if (rp->Id == ACPI_RSTYPE_END_TAG || rp->Length == 0)
1569 return (AE_NOT_FOUND);
1570 rp = ACPI_NEXT_RESOURCE(rp);
1579 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
1581 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
1582 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
1583 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
1586 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
1589 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
1594 /* Initialise the buffer if necessary. */
1595 if (buf->Pointer == NULL) {
1596 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
1597 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
1598 return (AE_NO_MEMORY);
1599 rp = (ACPI_RESOURCE *)buf->Pointer;
1600 rp->Id = ACPI_RSTYPE_END_TAG;
1607 * Scan the current buffer looking for the terminator.
1608 * This will either find the terminator or hit the end
1609 * of the buffer and return an error.
1611 rp = (ACPI_RESOURCE *)buf->Pointer;
1613 /* Range check, don't go outside the buffer */
1614 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
1615 return (AE_BAD_PARAMETER);
1616 if (rp->Id == ACPI_RSTYPE_END_TAG || rp->Length == 0)
1618 rp = ACPI_NEXT_RESOURCE(rp);
1622 * Check the size of the buffer and expand if required.
1625 * size of existing resources before terminator +
1626 * size of new resource and header +
1627 * size of terminator.
1629 * Note that this loop should really only run once, unless
1630 * for some reason we are stuffing a *really* huge resource.
1632 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
1633 res->Length + ACPI_RESOURCE_LENGTH_NO_DATA +
1634 ACPI_RESOURCE_LENGTH) >= buf->Length) {
1635 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
1636 return (AE_NO_MEMORY);
1637 bcopy(buf->Pointer, newp, buf->Length);
1638 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
1639 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
1640 AcpiOsFree(buf->Pointer);
1641 buf->Pointer = newp;
1642 buf->Length += buf->Length;
1645 /* Insert the new resource. */
1646 bcopy(res, rp, res->Length + ACPI_RESOURCE_LENGTH_NO_DATA);
1648 /* And add the terminator. */
1649 rp = ACPI_NEXT_RESOURCE(rp);
1650 rp->Id = ACPI_RSTYPE_END_TAG;
1657 * Set interrupt model.
1660 acpi_SetIntrModel(int model)
1662 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
1665 #define ACPI_MINIMUM_AWAKETIME 5
1668 acpi_sleep_enable(void *arg)
1670 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
1674 * Set the system sleep state
1676 * Currently we support S1-S5 but S4 is only S4BIOS
1679 acpi_SetSleepState(struct acpi_softc *sc, int state)
1681 ACPI_STATUS status = AE_OK;
1685 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
1688 /* Avoid reentry if already attempting to suspend. */
1689 if (sc->acpi_sstate != ACPI_STATE_S0)
1690 return_ACPI_STATUS (AE_BAD_PARAMETER);
1692 /* We recently woke up so don't suspend again for a while. */
1693 if (sc->acpi_sleep_disabled)
1694 return_ACPI_STATUS (AE_OK);
1701 status = AcpiGetSleepTypeData((UINT8)state, &TypeA, &TypeB);
1702 if (status == AE_NOT_FOUND) {
1703 device_printf(sc->acpi_dev,
1704 "Sleep state S%d not supported by BIOS\n", state);
1706 } else if (ACPI_FAILURE(status)) {
1707 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
1708 AcpiFormatException(status));
1712 sc->acpi_sstate = state;
1713 sc->acpi_sleep_disabled = 1;
1715 /* Disable all wake GPEs not appropriate for this state. */
1716 acpi_wake_limit_walk(state);
1718 /* Inform all devices that we are going to sleep. */
1719 if (DEVICE_SUSPEND(root_bus) != 0) {
1721 * Re-wake the system.
1723 * XXX note that a better two-pass approach with a 'veto' pass
1724 * followed by a "real thing" pass would be better, but the
1725 * current bus interface does not provide for this.
1727 DEVICE_RESUME(root_bus);
1728 return_ACPI_STATUS (AE_ERROR);
1731 status = AcpiEnterSleepStatePrep(state);
1732 if (ACPI_FAILURE(status)) {
1733 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
1734 AcpiFormatException(status));
1738 if (sc->acpi_sleep_delay > 0)
1739 DELAY(sc->acpi_sleep_delay * 1000000);
1741 if (state != ACPI_STATE_S1) {
1742 acpi_sleep_machdep(sc, state);
1744 /* AcpiEnterSleepState() may be incomplete, unlock if locked. */
1745 if (AcpiGbl_MutexInfo[ACPI_MTX_HARDWARE].OwnerId !=
1746 ACPI_MUTEX_NOT_ACQUIRED) {
1748 AcpiUtReleaseMutex(ACPI_MTX_HARDWARE);
1751 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
1752 if (state == ACPI_STATE_S4)
1755 status = AcpiEnterSleepState((UINT8)state);
1756 if (ACPI_FAILURE(status)) {
1757 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
1758 AcpiFormatException(status));
1762 AcpiLeaveSleepState((UINT8)state);
1763 DEVICE_RESUME(root_bus);
1764 sc->acpi_sstate = ACPI_STATE_S0;
1765 acpi_enable_fixed_events(sc);
1769 * Shut down cleanly and power off. This will call us back through the
1770 * shutdown handlers.
1772 shutdown_nice(RB_POWEROFF);
1776 status = AE_BAD_PARAMETER;
1780 /* Disable a second sleep request for a short period */
1781 if (sc->acpi_sleep_disabled)
1782 timeout(acpi_sleep_enable, (caddr_t)sc, hz * ACPI_MINIMUM_AWAKETIME);
1784 return_ACPI_STATUS (status);
1787 /* Initialize a device's wake GPE. */
1789 acpi_wake_init(device_t dev, int type)
1791 struct acpi_prw_data prw;
1793 /* Check that the device can wake the system. */
1794 if ((device_get_flags(dev) & ACPI_FLAG_WAKE_CAPABLE) == 0)
1797 /* Evaluate _PRW to find the GPE. */
1798 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
1801 /* Set the requested type for the GPE (runtime, wake, or both). */
1802 if (ACPI_FAILURE(AcpiSetGpeType(prw.gpe_handle, prw.gpe_bit, type))) {
1803 device_printf(dev, "set GPE type failed\n");
1810 /* Enable or disable the device's wake GPE. */
1812 acpi_wake_set_enable(device_t dev, int enable)
1814 struct acpi_prw_data prw;
1819 /* Make sure the device supports waking the system. */
1820 flags = device_get_flags(dev);
1821 handle = acpi_get_handle(dev);
1822 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
1825 /* Evaluate _PRW to find the GPE. */
1826 if (acpi_parse_prw(handle, &prw) != 0)
1830 status = AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1831 if (ACPI_FAILURE(status)) {
1832 device_printf(dev, "enable wake failed\n");
1835 device_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
1837 status = AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1838 if (ACPI_FAILURE(status)) {
1839 device_printf(dev, "disable wake failed\n");
1842 device_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
1848 /* Configure a device's GPE appropriately for the new sleep state. */
1850 acpi_wake_sleep_prep(device_t dev, int sstate)
1852 struct acpi_prw_data prw;
1856 /* Check that this is an ACPI device and get its GPE. */
1857 flags = device_get_flags(dev);
1858 handle = acpi_get_handle(dev);
1859 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
1862 /* Evaluate _PRW to find the GPE. */
1863 if (acpi_parse_prw(handle, &prw) != 0)
1867 * TBD: All Power Resources referenced by elements 2 through N
1868 * of the _PRW object are put into the ON state.
1872 * If the user requested that this device wake the system and the next
1873 * sleep state is valid for this GPE, enable it and the device's wake
1874 * capability. The sleep state must be less than (i.e., higher power)
1875 * or equal to the value specified by _PRW. Return early, leaving
1876 * the appropriate power resources enabled.
1878 if ((flags & ACPI_FLAG_WAKE_ENABLED) != 0 &&
1879 sstate <= prw.lowest_wake) {
1881 device_printf(dev, "wake_prep enabled gpe %#x for state %d\n",
1882 prw.gpe_bit, sstate);
1883 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1884 acpi_SetInteger(handle, "_PSW", 1);
1889 * If the device wake was disabled or this sleep state is too low for
1890 * this device, disable its wake capability and GPE.
1892 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1893 acpi_SetInteger(handle, "_PSW", 0);
1895 device_printf(dev, "wake_prep disabled gpe %#x for state %d\n",
1896 prw.gpe_bit, sstate);
1899 * TBD: All Power Resources referenced by elements 2 through N
1900 * of the _PRW object are put into the OFF state.
1906 /* Re-enable GPEs after wake. */
1908 acpi_wake_run_prep(device_t dev)
1910 struct acpi_prw_data prw;
1914 /* Check that this is an ACPI device and get its GPE. */
1915 flags = device_get_flags(dev);
1916 handle = acpi_get_handle(dev);
1917 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
1920 /* Evaluate _PRW to find the GPE. */
1921 if (acpi_parse_prw(handle, &prw) != 0)
1925 * TBD: Be sure all Power Resources referenced by elements 2 through N
1926 * of the _PRW object are in the ON state.
1929 /* Disable wake capability and if the user requested, enable the GPE. */
1930 acpi_SetInteger(handle, "_PSW", 0);
1931 if ((flags & ACPI_FLAG_WAKE_ENABLED) != 0)
1932 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1937 acpi_wake_limit(ACPI_HANDLE h, UINT32 level, void *context, void **status)
1939 struct acpi_prw_data prw;
1942 /* It's ok not to have _PRW if the device can't wake the system. */
1943 if (acpi_parse_prw(h, &prw) != 0)
1946 sstate = (int *)context;
1947 if (*sstate > prw.lowest_wake)
1948 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1953 /* Walk all system devices, disabling them if necessary for sstate. */
1955 acpi_wake_limit_walk(int sstate)
1957 ACPI_HANDLE sb_handle;
1959 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
1960 AcpiWalkNamespace(ACPI_TYPE_ANY, sb_handle, 100,
1961 acpi_wake_limit, &sstate, NULL);
1965 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
1967 acpi_wake_sysctl_walk(device_t dev)
1969 int error, i, numdevs;
1973 error = device_get_children(dev, &devlist, &numdevs);
1974 if (error != 0 || numdevs == 0)
1976 for (i = 0; i < numdevs; i++) {
1978 if (!device_is_attached(child))
1980 if (device_get_flags(child) & ACPI_FLAG_WAKE_CAPABLE) {
1982 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
1983 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
1984 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
1985 acpi_wake_set_sysctl, "I", "Device set to wake the system");
1986 #endif /* dfly_notyet */
1988 acpi_wake_sysctl_walk(child);
1990 free(devlist, M_TEMP);
1995 /* Enable or disable wake from userland. */
1997 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2002 dev = (device_t)arg1;
2003 enable = (device_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
2005 error = sysctl_handle_int(oidp, &enable, 0, req);
2006 if (error != 0 || req->newptr == NULL)
2008 if (enable != 0 && enable != 1)
2011 return (acpi_wake_set_enable(dev, enable));
2014 /* Parse a device's _PRW into a structure. */
2016 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2019 ACPI_BUFFER prw_buffer;
2020 ACPI_OBJECT *res, *res2;
2023 if (h == NULL || prw == NULL)
2027 * The _PRW object (7.2.9) is only required for devices that have the
2028 * ability to wake the system from a sleeping state.
2031 prw_buffer.Pointer = NULL;
2032 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2033 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2034 if (ACPI_FAILURE(status))
2036 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2039 if (!ACPI_PKG_VALID(res, 2))
2043 * Element 1 of the _PRW object:
2044 * The lowest power system sleeping state that can be entered while still
2045 * providing wake functionality. The sleeping state being entered must
2046 * be less than (i.e., higher power) or equal to this value.
2048 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2052 * Element 0 of the _PRW object:
2054 switch (res->Package.Elements[0].Type) {
2055 case ACPI_TYPE_INTEGER:
2057 * If the data type of this package element is numeric, then this
2058 * _PRW package element is the bit index in the GPEx_EN, in the
2059 * GPE blocks described in the FADT, of the enable bit that is
2060 * enabled for the wake event.
2062 prw->gpe_handle = NULL;
2063 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2066 case ACPI_TYPE_PACKAGE:
2068 * If the data type of this package element is a package, then this
2069 * _PRW package element is itself a package containing two
2070 * elements. The first is an object reference to the GPE Block
2071 * device that contains the GPE that will be triggered by the wake
2072 * event. The second element is numeric and it contains the bit
2073 * index in the GPEx_EN, in the GPE Block referenced by the
2074 * first element in the package, of the enable bit that is enabled for
2077 * For example, if this field is a package then it is of the form:
2078 * Package() {\_SB.PCI0.ISA.GPE, 2}
2080 res2 = &res->Package.Elements[0];
2081 if (!ACPI_PKG_VALID(res2, 2))
2083 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2084 if (prw->gpe_handle == NULL)
2086 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2094 /* XXX No power resource handling yet. */
2095 prw->power_res = NULL;
2098 if (prw_buffer.Pointer != NULL)
2099 AcpiOsFree(prw_buffer.Pointer);
2104 * Enable/Disable ACPI
2107 acpi_Enable(struct acpi_softc *sc)
2112 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2115 flags = ACPI_NO_ADDRESS_SPACE_INIT | ACPI_NO_HARDWARE_INIT |
2116 ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
2117 if (!sc->acpi_enabled)
2118 status = AcpiEnableSubsystem(flags);
2122 if (status == AE_OK)
2123 sc->acpi_enabled = 1;
2125 return_ACPI_STATUS (status);
2129 acpi_Disable(struct acpi_softc *sc)
2133 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2136 if (sc->acpi_enabled)
2137 status = AcpiDisable();
2141 if (status == AE_OK)
2142 sc->acpi_enabled = 0;
2144 return_ACPI_STATUS (status);
2148 * ACPI Event Handlers
2151 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2154 acpi_system_eventhandler_sleep(void *arg, int state)
2157 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2160 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
2161 acpi_SetSleepState((struct acpi_softc *)arg, state);
2167 acpi_system_eventhandler_wakeup(void *arg, int state)
2170 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2172 /* Well, what to do? :-) */
2181 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2184 acpi_event_power_button_sleep(void *context)
2186 struct acpi_softc *sc = (struct acpi_softc *)context;
2188 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2190 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2192 return_VALUE (ACPI_INTERRUPT_HANDLED);
2196 acpi_event_power_button_wake(void *context)
2198 struct acpi_softc *sc = (struct acpi_softc *)context;
2200 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2202 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2204 return_VALUE (ACPI_INTERRUPT_HANDLED);
2208 acpi_event_sleep_button_sleep(void *context)
2210 struct acpi_softc *sc = (struct acpi_softc *)context;
2212 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2214 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2216 return_VALUE (ACPI_INTERRUPT_HANDLED);
2220 acpi_event_sleep_button_wake(void *context)
2222 struct acpi_softc *sc = (struct acpi_softc *)context;
2224 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2226 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2228 return_VALUE (ACPI_INTERRUPT_HANDLED);
2232 * XXX This is kinda ugly, and should not be here.
2234 struct acpi_staticbuf {
2240 acpi_name(ACPI_HANDLE handle)
2242 static struct acpi_staticbuf buf;
2246 buf.buffer.Length = 512;
2247 buf.buffer.Pointer = &buf.data[0];
2249 if (ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer)))
2250 return (buf.buffer.Pointer);
2252 return ("(unknown path)");
2256 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2257 * parts of the namespace.
2260 acpi_avoid(ACPI_HANDLE handle)
2262 char *cp, *env, *np;
2265 np = acpi_name(handle);
2268 if ((env = getenv("debug.acpi.avoid")) == NULL)
2271 /* Scan the avoid list checking for a match */
2274 while ((*cp != 0) && isspace(*cp))
2279 while ((cp[len] != 0) && !isspace(cp[len]))
2281 if (!strncmp(cp, np, len)) {
2293 * Debugging/bug-avoidance. Disable ACPI subsystem components.
2296 acpi_disabled(char *subsys)
2301 if ((env = getenv("debug.acpi.disabled")) == NULL)
2303 if (strcmp(env, "all") == 0) {
2308 /* Scan the disable list, checking for a match. */
2311 while (*cp != '\0' && isspace(*cp))
2316 while (cp[len] != '\0' && !isspace(cp[len]))
2318 if (strncmp(cp, subsys, len) == 0) {
2330 * Control interface.
2332 * We multiplex ioctls for all participating ACPI devices here. Individual
2333 * drivers wanting to be accessible via /dev/acpi should use the
2334 * register/deregister interface to make their handlers visible.
2336 struct acpi_ioctl_hook
2338 TAILQ_ENTRY(acpi_ioctl_hook) link;
2344 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
2345 static int acpi_ioctl_hooks_initted;
2348 * Register an ioctl handler.
2351 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
2353 struct acpi_ioctl_hook *hp;
2355 hp = malloc(sizeof(*hp), M_ACPIDEV, M_INTWAIT);
2359 if (acpi_ioctl_hooks_initted == 0) {
2360 TAILQ_INIT(&acpi_ioctl_hooks);
2361 acpi_ioctl_hooks_initted = 1;
2363 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
2368 * Deregister an ioctl handler.
2371 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
2373 struct acpi_ioctl_hook *hp;
2375 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
2376 if ((hp->cmd == cmd) && (hp->fn == fn))
2380 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
2381 free(hp, M_ACPIDEV);
2386 acpiopen(dev_t dev, int flag, int fmt, d_thread_t *td)
2392 acpiclose(dev_t dev, int flag, int fmt, d_thread_t *td)
2398 acpiioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
2400 struct acpi_softc *sc;
2401 struct acpi_ioctl_hook *hp;
2402 int error, xerror, state;
2411 * Scan the list of registered ioctls, looking for handlers.
2413 if (acpi_ioctl_hooks_initted) {
2414 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
2415 if (hp->cmd == cmd) {
2416 xerror = hp->fn(cmd, addr, hp->arg);
2425 * Core ioctls are not permitted for non-writable user.
2426 * Currently, other ioctls just fetch information.
2427 * Not changing system behavior.
2429 if((flag & FWRITE) == 0)
2432 /* Core system ioctls. */
2435 if (ACPI_FAILURE(acpi_Enable(sc)))
2438 case ACPIIO_DISABLE:
2439 if (ACPI_FAILURE(acpi_Disable(sc)))
2442 case ACPIIO_SETSLPSTATE:
2443 if (!sc->acpi_enabled) {
2447 state = *(int *)addr;
2448 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) {
2449 if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
2467 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2469 char sleep_state[4];
2472 UINT8 state, TypeA, TypeB;
2475 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++) {
2476 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
2477 sprintf(sleep_state, "S%d ", state);
2478 strcat(buf, sleep_state);
2481 error = sysctl_handle_string(oidp, buf, sizeof(buf), req);
2486 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2488 char sleep_state[10];
2490 u_int new_state, old_state;
2492 old_state = *(u_int *)oidp->oid_arg1;
2493 if (old_state > ACPI_S_STATES_MAX + 1) {
2494 strcpy(sleep_state, "unknown");
2496 bzero(sleep_state, sizeof(sleep_state));
2497 strncpy(sleep_state, sleep_state_names[old_state],
2498 sizeof(sleep_state_names[old_state]));
2500 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
2501 if (error == 0 && req->newptr != NULL) {
2502 new_state = ACPI_STATE_S0;
2503 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++) {
2504 if (strncmp(sleep_state, sleep_state_names[new_state],
2505 sizeof(sleep_state)) == 0)
2508 if (new_state <= ACPI_S_STATES_MAX + 1) {
2509 if (new_state != old_state)
2510 *(u_int *)oidp->oid_arg1 = new_state;
2519 /* Inform devctl(4) when we receive a Notify. */
2521 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
2523 char notify_buf[16];
2524 ACPI_BUFFER handle_buf;
2527 if (subsystem == NULL)
2530 handle_buf.Pointer = NULL;
2531 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
2532 status = AcpiNsHandleToPathname(h, &handle_buf);
2533 if (ACPI_FAILURE(status))
2535 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
2537 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
2539 AcpiOsFree(handle_buf.Pointer);
2544 * Support for parsing debug options from the kernel environment.
2546 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
2547 * by specifying the names of the bits in the debug.acpi.layer and
2548 * debug.acpi.level environment variables. Bits may be unset by
2549 * prefixing the bit name with !.
2557 static struct debugtag dbg_layer[] = {
2558 {"ACPI_UTILITIES", ACPI_UTILITIES},
2559 {"ACPI_HARDWARE", ACPI_HARDWARE},
2560 {"ACPI_EVENTS", ACPI_EVENTS},
2561 {"ACPI_TABLES", ACPI_TABLES},
2562 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
2563 {"ACPI_PARSER", ACPI_PARSER},
2564 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
2565 {"ACPI_EXECUTER", ACPI_EXECUTER},
2566 {"ACPI_RESOURCES", ACPI_RESOURCES},
2567 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
2568 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
2569 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
2570 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
2572 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
2573 {"ACPI_BATTERY", ACPI_BATTERY},
2574 {"ACPI_BUS", ACPI_BUS},
2575 {"ACPI_BUTTON", ACPI_BUTTON},
2576 {"ACPI_EC", ACPI_EC},
2577 {"ACPI_FAN", ACPI_FAN},
2578 {"ACPI_POWERRES", ACPI_POWERRES},
2579 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
2580 {"ACPI_THERMAL", ACPI_THERMAL},
2581 {"ACPI_TIMER", ACPI_TIMER},
2582 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
2586 static struct debugtag dbg_level[] = {
2587 {"ACPI_LV_ERROR", ACPI_LV_ERROR},
2588 {"ACPI_LV_WARN", ACPI_LV_WARN},
2589 {"ACPI_LV_INIT", ACPI_LV_INIT},
2590 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
2591 {"ACPI_LV_INFO", ACPI_LV_INFO},
2592 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
2594 /* Trace verbosity level 1 [Standard Trace Level] */
2595 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
2596 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
2597 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
2598 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
2599 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
2600 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
2601 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
2602 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
2603 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
2604 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
2605 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
2606 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
2607 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
2608 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
2609 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
2611 /* Trace verbosity level 2 [Function tracing and memory allocation] */
2612 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
2613 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
2614 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
2615 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
2616 {"ACPI_LV_ALL", ACPI_LV_ALL},
2618 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
2619 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
2620 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
2621 {"ACPI_LV_IO", ACPI_LV_IO},
2622 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
2623 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
2625 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
2626 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
2627 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
2628 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
2629 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
2630 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
2635 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
2647 while (*ep && !isspace(*ep))
2658 for (i = 0; tag[i].name != NULL; i++) {
2659 if (!strncmp(cp, tag[i].name, l)) {
2661 *flag |= tag[i].value;
2663 *flag &= ~tag[i].value;
2671 acpi_set_debugging(void *junk)
2673 char *layer, *level;
2680 layer = getenv("debug.acpi.layer");
2681 level = getenv("debug.acpi.level");
2682 if (layer == NULL && level == NULL)
2685 printf("ACPI set debug");
2686 if (layer != NULL) {
2687 if (strcmp("NONE", layer) != 0)
2688 printf(" layer '%s'", layer);
2689 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
2692 if (level != NULL) {
2693 if (strcmp("NONE", level) != 0)
2694 printf(" level '%s'", level);
2695 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
2700 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
2704 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
2707 struct debugtag *tag;
2710 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
2712 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
2713 tag = &dbg_layer[0];
2714 dbg = &AcpiDbgLayer;
2716 tag = &dbg_level[0];
2717 dbg = &AcpiDbgLevel;
2720 /* Get old values if this is a get request. */
2722 sbuf_cpy(&sb, "NONE");
2723 } else if (req->newptr == NULL) {
2724 for (; tag->name != NULL; tag++) {
2725 if ((*dbg & tag->value) == tag->value)
2726 sbuf_printf(&sb, "%s ", tag->name);
2732 /* Copy out the old values to the user. */
2733 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
2736 /* If the user is setting a string, parse it. */
2737 if (error == 0 && req->newptr != NULL) {
2739 setenv((char *)oidp->oid_arg1, (char *)req->newptr);
2740 acpi_set_debugging(NULL);
2745 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
2746 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
2747 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
2748 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
2752 acpi_pm_func(u_long cmd, void *arg, ...)
2754 int state, acpi_state;
2756 struct acpi_softc *sc;
2761 case POWER_CMD_SUSPEND:
2762 sc = (struct acpi_softc *)arg;
2769 state = va_arg(ap, int);
2773 case POWER_SLEEP_STATE_STANDBY:
2774 acpi_state = sc->acpi_standby_sx;
2776 case POWER_SLEEP_STATE_SUSPEND:
2777 acpi_state = sc->acpi_suspend_sx;
2779 case POWER_SLEEP_STATE_HIBERNATE:
2780 acpi_state = ACPI_STATE_S4;
2787 acpi_SetSleepState(sc, acpi_state);
2799 acpi_pm_register(void *arg)
2801 if (!cold || resource_disabled("acpi", 0))
2804 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
2807 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);