2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
4 * Copyright (c) 2000, 2001 Michael Smith
5 * Copyright (c) 2000 BSDi
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/sys/dev/acpica/acpi.c,v 1.157 2004/06/05 09:56:04 njl Exp $
30 * $DragonFly: src/sys/dev/acpica5/acpi.c,v 1.23 2006/09/10 06:05:35 y0netan1 Exp $
34 #include <sys/param.h>
35 #include <sys/kernel.h>
37 #include <sys/fcntl.h>
38 #include <sys/malloc.h>
41 #include <sys/device.h>
42 #include <sys/ioccom.h>
43 #include <sys/reboot.h>
44 #include <sys/sysctl.h>
45 #include <sys/ctype.h>
46 #include <sys/linker.h>
47 #include <sys/power.h>
49 #include <sys/thread2.h>
51 #include <machine/clock.h>
52 #include <machine/globaldata.h>
53 #include <machine/resource.h>
54 #include <machine/bus.h>
56 #include <bus/isa/isavar.h>
59 #include <dev/acpica5/acpivar.h>
60 #include <dev/acpica5/acpiio.h>
63 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
65 /* Hooks for the ACPI CA debugging infrastructure */
66 #define _COMPONENT ACPI_BUS
67 ACPI_MODULE_NAME("ACPI")
69 static d_open_t acpiopen;
70 static d_close_t acpiclose;
71 static d_ioctl_t acpiioctl;
73 #define CDEV_MAJOR 152
74 static struct dev_ops acpi_ops = {
75 { "acpi", CDEV_MAJOR, 0 },
81 #if __FreeBSD_version >= 500000
82 struct mtx acpi_mutex;
91 #define ACPI_OEM_REV_ANY 0
93 static struct acpi_quirks acpi_quirks_table[] = {
95 /* Bad PCI routing table. Used on some SuperMicro boards. */
96 { "PTLTD ", 0x06040000, "pci_link" },
102 static int acpi_modevent(struct module *mod, int event, void *junk);
103 static int acpi_identify(driver_t *driver, device_t parent);
104 static int acpi_probe(device_t dev);
105 static int acpi_attach(device_t dev);
106 static int acpi_shutdown(device_t dev);
107 static void acpi_quirks_set(void);
108 static device_t acpi_add_child(device_t bus, device_t parent, int order,
109 const char *name, int unit);
110 static int acpi_print_child(device_t bus, device_t child);
111 static int acpi_read_ivar(device_t dev, device_t child, int index,
113 static int acpi_write_ivar(device_t dev, device_t child, int index,
115 static int acpi_set_resource(device_t dev, device_t child, int type,
116 int rid, u_long start, u_long count);
117 static int acpi_get_resource(device_t dev, device_t child, int type,
118 int rid, u_long *startp, u_long *countp);
119 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
120 int type, int *rid, u_long start, u_long end,
121 u_long count, u_int flags);
122 static int acpi_release_resource(device_t bus, device_t child, int type,
123 int rid, struct resource *r);
124 static uint32_t acpi_isa_get_logicalid(device_t dev);
125 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
126 static int acpi_isa_pnp_probe(device_t bus, device_t child,
127 struct isa_pnp_id *ids);
128 static void acpi_probe_children(device_t bus);
129 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
130 void *context, void **status);
131 static void acpi_shutdown_pre_sync(void *arg, int howto);
132 static void acpi_shutdown_final(void *arg, int howto);
133 static void acpi_shutdown_poweroff(void *arg);
134 static void acpi_enable_fixed_events(struct acpi_softc *sc);
135 static int acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw);
136 static ACPI_STATUS acpi_wake_limit(ACPI_HANDLE h, UINT32 level, void *context,
138 static int acpi_wake_limit_walk(int sstate);
139 static int acpi_wake_sysctl_walk(device_t dev);
141 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 = kgetenv("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 = kgetenv("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)
312 * No sense rescanning an ACPI 'bus'.
314 if (device_get_state(parent) == DS_ATTACHED)
317 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
322 /* Check that we haven't been disabled with a hint. */
323 if (resource_disabled("acpi", 0))
326 /* Make sure we're not being doubly invoked. */
327 if (device_find_child(parent, "acpi", 0) != NULL)
330 /* Initialize ACPI-CA. */
331 if (ACPI_FAILURE(acpi_Startup()))
334 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%#x", ACPI_CA_VERSION);
336 /* Attach the actual ACPI device. */
337 if ((child = BUS_ADD_CHILD(parent, parent, 0, "acpi", 0)) == NULL) {
338 device_printf(parent, "ACPI: could not attach\n");
345 * Fetch some descriptive data from ACPI to put in our attach message
348 acpi_probe(device_t dev)
350 ACPI_TABLE_HEADER th;
357 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
359 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
360 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
362 device_printf(dev, "Other PM system enabled.\n");
368 if (ACPI_FAILURE(status = AcpiGetTableHeader(ACPI_TABLE_XSDT, 1, &th))) {
369 device_printf(dev, "couldn't get XSDT header: %s\n",
370 AcpiFormatException(status));
373 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
374 sbuf_bcat(&sb, th.OemId, 6);
377 sbuf_bcat(&sb, th.OemTableId, 8);
380 device_set_desc_copy(dev, sbuf_data(&sb));
389 acpi_attach(device_t dev)
391 struct acpi_softc *sc;
402 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
404 sc = device_get_softc(dev);
405 bzero(sc, sizeof(*sc));
407 callout_init(&sc->acpi_sleep_timer);
410 debugpoint = kgetenv("debug.acpi.debugger");
412 if (!strcmp(debugpoint, "spaces"))
413 acpi_EnterDebugger();
418 /* Install the default address space handlers. */
420 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
421 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
422 if (ACPI_FAILURE(status)) {
423 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
424 AcpiFormatException(status));
427 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
428 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
429 if (ACPI_FAILURE(status)) {
430 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
431 AcpiFormatException(status));
434 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
435 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
436 if (ACPI_FAILURE(status)) {
437 device_printf(dev, "could not initialise PciConfig handler: %s\n",
438 AcpiFormatException(status));
443 * Bring ACPI fully online.
445 * Note that some systems (specifically, those with namespace evaluation
446 * issues that require the avoidance of parts of the namespace) must
447 * avoid running _INI and _STA on everything, as well as dodging the final
450 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
451 * For avoiding portions of the namespace without totally disabling _INI
452 * and _STA, use "debug.acpi.avoid.paths".
454 * XXX We should arrange for the object init pass after we have attached
455 * all our child devices, but on many systems it works here.
458 debugpoint = kgetenv("debug.acpi.debugger");
460 if (!strcmp(debugpoint, "enable"))
461 acpi_EnterDebugger();
466 if (testenv("debug.acpi.avoid"))
467 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
468 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
469 device_printf(dev, "Could not enable ACPI: %s\n",
470 AcpiFormatException(status));
475 * Call the ECDT probe function to provide EC functionality before
476 * the namespace has been evaluated.
478 acpi_ec_ecdt_probe(dev);
480 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
481 device_printf(dev, "Could not initialize ACPI objects: %s\n",
482 AcpiFormatException(status));
487 * Setup our sysctl tree.
489 * XXX: This doesn't check to make sure that none of these fail.
491 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
492 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
493 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
494 device_get_name(dev), CTLFLAG_RD, 0, "");
495 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
496 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
497 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
498 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
499 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
500 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
501 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
502 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
503 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
504 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
505 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
506 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
507 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
508 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
509 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
510 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
511 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
512 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
513 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
514 OID_AUTO, "sleep_delay", CTLFLAG_RD | CTLFLAG_RW,
515 &sc->acpi_sleep_delay, 0, "sleep delay");
516 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
517 OID_AUTO, "s4bios", CTLFLAG_RD | CTLFLAG_RW,
518 &sc->acpi_s4bios, 0, "S4BIOS mode");
519 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
520 OID_AUTO, "verbose", CTLFLAG_RD | CTLFLAG_RW,
521 &sc->acpi_verbose, 0, "verbose mode");
522 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
523 OID_AUTO, "disable_on_poweroff", CTLFLAG_RD | CTLFLAG_RW,
524 &sc->acpi_disable_on_poweroff, 0, "ACPI subsystem disable on poweroff");
527 * Default to 1 second before sleeping to give some machines time to
530 sc->acpi_sleep_delay = 1;
531 sc->acpi_disable_on_poweroff = 0;
533 sc->acpi_verbose = 1;
534 if ((env = kgetenv("hw.acpi.verbose")) && strcmp(env, "0")) {
535 sc->acpi_verbose = 1;
539 /* Only enable S4BIOS by default if the FACS says it is available. */
540 if (AcpiGbl_FACS->S4Bios_f != 0)
544 * Dispatch the default sleep state to devices. The lid switch is set
545 * to NONE by default to avoid surprising users.
547 sc->acpi_power_button_sx = ACPI_STATE_S5;
548 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
549 sc->acpi_standby_sx = ACPI_STATE_S1;
550 sc->acpi_suspend_sx = ACPI_STATE_S3;
552 /* Pick the first valid sleep state for the sleep button default. */
553 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
554 for (state = ACPI_STATE_S1; state < ACPI_STATE_S5; state++)
555 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
556 sc->acpi_sleep_button_sx = state;
560 acpi_enable_fixed_events(sc);
563 * Scan the namespace and attach/initialise children.
566 debugpoint = kgetenv("debug.acpi.debugger");
568 if (!strcmp(debugpoint, "probe"))
569 acpi_EnterDebugger();
574 /* Register our shutdown handlers */
575 EVENTHANDLER_REGISTER(shutdown_pre_sync, acpi_shutdown_pre_sync, sc,
577 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
581 * Register our acpi event handlers.
582 * XXX should be configurable eg. via userland policy manager.
584 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
585 sc, ACPI_EVENT_PRI_LAST);
586 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
587 sc, ACPI_EVENT_PRI_LAST);
589 /* Flag our initial states. */
590 sc->acpi_enabled = 1;
591 sc->acpi_sstate = ACPI_STATE_S0;
592 sc->acpi_sleep_disabled = 0;
594 /* Create the control device */
595 dev_ops_add(&acpi_ops, 0, 0);
596 sc->acpi_dev_t = make_dev(&acpi_ops, 0, UID_ROOT, GID_WHEEL, 0644,
598 sc->acpi_dev_t->si_drv1 = sc;
601 debugpoint = kgetenv("debug.acpi.debugger");
603 if (strcmp(debugpoint, "running") == 0)
604 acpi_EnterDebugger();
609 if ((error = acpi_task_thread_init()))
612 if ((error = acpi_machdep_init(dev)))
615 /* Register ACPI again to pass the correct argument of pm_func. */
616 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
618 if (!acpi_disabled("bus"))
619 acpi_probe_children(dev);
625 return_VALUE (error);
629 acpi_shutdown(device_t dev)
631 /* Allow children to shutdown first. */
632 bus_generic_shutdown(dev);
634 /* Disable all wake GPEs not appropriate for reboot/poweroff. */
635 acpi_wake_limit_walk(ACPI_STATE_S5);
640 acpi_quirks_set(void)
642 XSDT_DESCRIPTOR *xsdt;
643 struct acpi_quirks *quirk;
648 * If the user loaded a custom table or disabled "quirks", leave
649 * the settings alone.
652 if ((env = kgetenv("acpi_dsdt_load")) != NULL) {
653 /* XXX No strcasecmp but this is good enough. */
654 if (*env == 'Y' || *env == 'y')
658 if ((env = kgetenv("debug.acpi.disabled")) != NULL) {
659 if (strstr("quirks", env) != NULL)
665 * Search through our quirk table and concatenate the disabled
666 * values with whatever we find.
669 for (quirk = acpi_quirks_table; quirk->OemId; quirk++) {
670 if (!strncmp(xsdt->OemId, quirk->OemId, strlen(quirk->OemId)) &&
671 (xsdt->OemRevision == quirk->OemRevision ||
672 quirk->OemRevision == ACPI_OEM_REV_ANY)) {
673 len += strlen(quirk->value) + 2;
674 if ((tmp = kmalloc(len, M_TEMP, M_NOWAIT)) == NULL)
676 sprintf(tmp, "%s %s", env ? env : "", quirk->value);
678 setenv("debug.acpi.disabled", tmp);
691 * Handle a new device being added
694 acpi_add_child(device_t bus, device_t parent, int order,
695 const char *name, int unit)
697 struct acpi_device *ad;
700 ad = kmalloc(sizeof(*ad), M_ACPIDEV, M_INTWAIT | M_ZERO);
702 resource_list_init(&ad->ad_rl);
704 child = device_add_child_ordered(parent, order, name, unit);
706 device_set_ivars(child, ad);
711 acpi_print_child(device_t bus, device_t child)
713 struct acpi_device *adev = device_get_ivars(child);
714 struct resource_list *rl = &adev->ad_rl;
717 retval += bus_print_child_header(bus, child);
718 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
719 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
720 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
721 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
722 retval += bus_print_child_footer(bus, child);
727 /* Location hint for devctl(8) */
729 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
732 struct acpi_device *dinfo = device_get_ivars(child);
734 if (dinfo->ad_handle)
735 snprintf(buf, buflen, "path=%s", acpi_name(dinfo->ad_handle));
737 snprintf(buf, buflen, "magic=unknown");
741 /* PnP information for devctl(8) */
743 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
746 ACPI_BUFFER adbuf = {ACPI_ALLOCATE_BUFFER, NULL};
747 ACPI_DEVICE_INFO *adinfo;
748 struct acpi_device *dinfo = device_get_ivars(child);
752 error = AcpiGetObjectInfo(dinfo->ad_handle, &adbuf);
753 adinfo = (ACPI_DEVICE_INFO *) adbuf.Pointer;
756 snprintf(buf, buflen, "Unknown");
758 snprintf(buf, buflen, "_HID=%s _UID=%lu",
759 (adinfo->Valid & ACPI_VALID_HID) ?
760 adinfo->HardwareId.Value : "UNKNOWN",
761 (adinfo->Valid & ACPI_VALID_UID) ?
762 strtoul(adinfo->UniqueId.Value, &end, 10) : 0);
771 * Handle per-device ivars
774 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
776 struct acpi_device *ad;
778 if ((ad = device_get_ivars(child)) == NULL) {
779 printf("device has no ivars\n");
783 /* ACPI and ISA compatibility ivars */
785 case ACPI_IVAR_HANDLE:
786 *(ACPI_HANDLE *)result = ad->ad_handle;
788 case ACPI_IVAR_MAGIC:
789 *(int *)result = ad->ad_magic;
791 case ACPI_IVAR_PRIVATE:
792 *(void **)result = ad->ad_private;
794 case ISA_IVAR_VENDORID:
795 case ISA_IVAR_SERIAL:
796 case ISA_IVAR_COMPATID:
799 case ISA_IVAR_LOGICALID:
800 *(int *)result = acpi_isa_get_logicalid(child);
810 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
812 struct acpi_device *ad;
814 if ((ad = device_get_ivars(child)) == NULL) {
815 printf("device has no ivars\n");
820 case ACPI_IVAR_HANDLE:
821 ad->ad_handle = (ACPI_HANDLE)value;
823 case ACPI_IVAR_MAGIC:
824 ad->ad_magic = (int)value;
826 case ACPI_IVAR_PRIVATE:
827 ad->ad_private = (void *)value;
830 panic("bad ivar write request (%d)", index);
838 * Handle child resource allocation/removal
841 acpi_set_resource(device_t dev, device_t child, int type, int rid,
842 u_long start, u_long count)
844 struct acpi_device *ad = device_get_ivars(child);
845 struct resource_list *rl = &ad->ad_rl;
847 resource_list_add(rl, type, rid, start, start + count -1, count);
853 acpi_get_resource(device_t dev, device_t child, int type, int rid,
854 u_long *startp, u_long *countp)
856 struct acpi_device *ad = device_get_ivars(child);
857 struct resource_list *rl = &ad->ad_rl;
858 struct resource_list_entry *rle;
860 rle = resource_list_find(rl, type, rid);
865 *startp = rle->start;
867 *countp = rle->count;
872 static struct resource *
873 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
874 u_long start, u_long end, u_long count, u_int flags)
876 struct acpi_device *ad = device_get_ivars(child);
877 struct resource_list *rl = &ad->ad_rl;
879 return (resource_list_alloc(rl, bus, child, type, rid, start, end, count,
884 acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r)
886 struct acpi_device *ad = device_get_ivars(child);
887 struct resource_list *rl = &ad->ad_rl;
889 return (resource_list_release(rl, bus, child, type, rid, r));
892 /* Allocate an IO port or memory resource, given its GAS. */
894 acpi_bus_alloc_gas(device_t dev, int *rid, ACPI_GENERIC_ADDRESS *gas)
898 if (gas == NULL || !ACPI_VALID_ADDRESS(gas->Address) ||
899 gas->RegisterBitWidth < 8)
902 switch (gas->AddressSpaceId) {
903 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
904 type = SYS_RES_MEMORY;
906 case ACPI_ADR_SPACE_SYSTEM_IO:
907 type = SYS_RES_IOPORT;
913 bus_set_resource(dev, type, *rid, gas->Address, gas->RegisterBitWidth / 8);
914 return (bus_alloc_resource_any(dev, type, rid, RF_ACTIVE));
918 * Handle ISA-like devices probing for a PnP ID to match.
920 #define PNP_EISAID(s) \
921 ((((s[0] - '@') & 0x1f) << 2) \
922 | (((s[1] - '@') & 0x18) >> 3) \
923 | (((s[1] - '@') & 0x07) << 13) \
924 | (((s[2] - '@') & 0x1f) << 8) \
925 | (PNP_HEXTONUM(s[4]) << 16) \
926 | (PNP_HEXTONUM(s[3]) << 20) \
927 | (PNP_HEXTONUM(s[6]) << 24) \
928 | (PNP_HEXTONUM(s[5]) << 28))
931 acpi_isa_get_logicalid(device_t dev)
933 ACPI_DEVICE_INFO *devinfo;
940 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
944 buf.Length = ACPI_ALLOCATE_BUFFER;
948 /* Fetch and validate the HID. */
949 if ((h = acpi_get_handle(dev)) == NULL)
951 error = AcpiGetObjectInfo(h, &buf);
952 if (ACPI_FAILURE(error))
954 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
956 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
957 pnpid = PNP_EISAID(devinfo->HardwareId.Value);
960 if (buf.Pointer != NULL)
961 AcpiOsFree(buf.Pointer);
963 return_VALUE (pnpid);
967 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
969 ACPI_DEVICE_INFO *devinfo;
977 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
982 buf.Length = ACPI_ALLOCATE_BUFFER;
986 /* Fetch and validate the CID */
987 if ((h = acpi_get_handle(dev)) == NULL)
989 error = AcpiGetObjectInfo(h, &buf);
990 if (ACPI_FAILURE(error))
992 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
993 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
996 if (devinfo->CompatibilityId.Count < count)
997 count = devinfo->CompatibilityId.Count;
998 for (i = 0; i < count; i++) {
999 if (strncmp(devinfo->CompatibilityId.Id[i].Value, "PNP", 3) != 0)
1001 *pnpid++ = PNP_EISAID(devinfo->CompatibilityId.Id[i].Value);
1006 if (buf.Pointer != NULL)
1007 AcpiOsFree(buf.Pointer);
1009 return_VALUE (valid);
1013 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1015 int result, cid_count, i;
1016 uint32_t lid, cids[8];
1018 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1021 * ISA-style drivers attached to ACPI may persist and
1022 * probe manually if we return ENOENT. We never want
1023 * that to happen, so don't ever return it.
1027 /* Scan the supplied IDs for a match */
1028 lid = acpi_isa_get_logicalid(child);
1029 cid_count = acpi_isa_get_compatid(child, cids, 8);
1030 while (ids && ids->ip_id) {
1031 if (lid == ids->ip_id) {
1035 for (i = 0; i < cid_count; i++) {
1036 if (cids[i] == ids->ip_id) {
1045 return_VALUE (result);
1049 * Scan relevant portions of the ACPI namespace and attach child devices.
1051 * Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and
1052 * \_SB_ scopes, and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec.
1055 acpi_probe_children(device_t bus)
1059 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL};
1062 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1065 /* Create any static children by calling device identify methods. */
1066 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1067 bus_generic_probe(bus);
1070 * Scan the namespace and insert placeholders for all the devices that
1073 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1074 * we want to create nodes for all devices, not just those that are
1075 * currently present. (This assumes that we don't want to create/remove
1076 * devices as they appear, which might be smarter.)
1078 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1079 for (i = 0; scopes[i] != NULL; i++) {
1080 status = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent);
1081 if (ACPI_SUCCESS(status)) {
1082 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, acpi_probe_child,
1088 * Scan all of the child devices we have created and let them probe/attach.
1090 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1091 bus_generic_attach(bus);
1094 * Some of these children may have attached others as part of their attach
1095 * process (eg. the root PCI bus driver), so rescan.
1097 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1098 bus_generic_attach(bus);
1100 /* Attach wake sysctls. */
1101 acpi_wake_sysctl_walk(bus);
1103 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1108 * Evaluate a child device and determine whether we might attach a device to
1112 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1114 ACPI_OBJECT_TYPE type;
1115 device_t child, bus = (device_t)context;
1117 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1119 /* Skip this device if we think we'll have trouble with it. */
1120 if (acpi_avoid(handle)) {
1121 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "not scanning '%s'\n",
1122 acpi_name(handle)));
1123 return_ACPI_STATUS (AE_OK);
1126 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1128 case ACPI_TYPE_DEVICE:
1129 case ACPI_TYPE_PROCESSOR:
1130 case ACPI_TYPE_THERMAL:
1131 case ACPI_TYPE_POWER:
1132 if (acpi_disabled("children"))
1136 * Create a placeholder device for this node. Sort the placeholder
1137 * so that the probe/attach passes will run breadth-first.
1139 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n",
1140 acpi_name(handle)));
1141 child = BUS_ADD_CHILD(bus, bus, level * 10, NULL, -1);
1144 acpi_set_handle(child, handle);
1146 /* Check if the device can generate wake events. */
1147 if (ACPI_SUCCESS(AcpiEvaluateObject(handle, "_PRW", NULL, NULL)))
1148 device_set_flags(child, ACPI_FLAG_WAKE_CAPABLE);
1151 * Check that the device is present. If it's not present,
1152 * leave it disabled (so that we have a device_t attached to
1153 * the handle, but we don't probe it).
1155 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1156 device_disable(child);
1161 * Get the device's resource settings and attach them.
1162 * Note that if the device has _PRS but no _CRS, we need
1163 * to decide when it's appropriate to try to configure the
1164 * device. Ignore the return value here; it's OK for the
1165 * device not to have any resources.
1167 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
1169 /* If we're debugging, probe/attach now rather than later */
1170 ACPI_DEBUG_EXEC(device_probe_and_attach(child));
1175 return_ACPI_STATUS (AE_OK);
1179 acpi_shutdown_pre_sync(void *arg, int howto)
1181 struct acpi_softc *sc = arg;
1186 * Disable all ACPI events before soft off, otherwise the system
1187 * will be turned on again on some laptops.
1189 * XXX this should probably be restricted to masking some events just
1190 * before powering down, since we may still need ACPI during the
1193 if (sc->acpi_disable_on_poweroff)
1198 acpi_shutdown_final(void *arg, int howto)
1204 * If powering off, run the actual shutdown code on each processor.
1205 * It will only perform the shutdown on the BSP. Some chipsets do
1206 * not power off the system correctly if called from an AP.
1208 if ((howto & RB_POWEROFF) != 0) {
1209 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1210 if (ACPI_FAILURE(status)) {
1211 printf("AcpiEnterSleepStatePrep failed - %s\n",
1212 AcpiFormatException(status));
1215 printf("Powering system off using ACPI\n");
1216 acpi_shutdown_poweroff(NULL);
1218 printf("Shutting down ACPI\n");
1224 * Since this function may be called with locks held or in an unknown
1225 * context, it cannot allocate memory, acquire locks, sleep, etc.
1228 acpi_shutdown_poweroff(void *arg)
1234 /* Only attempt to power off if this is the BSP (cpuid 0). */
1235 if (mdcpu->mi.gd_cpuid != 0)
1238 ACPI_DISABLE_IRQS();
1239 status = AcpiEnterSleepState(ACPI_STATE_S5);
1240 if (ACPI_FAILURE(status)) {
1241 printf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1244 printf("ACPI power-off failed - timeout\n");
1249 acpi_enable_fixed_events(struct acpi_softc *sc)
1251 static int first_time = 1;
1255 /* Enable and clear fixed events and install handlers. */
1256 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->PwrButton == 0) {
1257 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1258 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1259 acpi_event_power_button_sleep, sc);
1261 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1263 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->SleepButton == 0) {
1264 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1265 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1266 acpi_event_sleep_button_sleep, sc);
1268 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1275 * Returns true if the device is actually present and should
1276 * be attached to. This requires the present, enabled, UI-visible
1277 * and diagnostics-passed bits to be set.
1280 acpi_DeviceIsPresent(device_t dev)
1282 ACPI_DEVICE_INFO *devinfo;
1291 if ((h = acpi_get_handle(dev)) == NULL)
1294 buf.Length = ACPI_ALLOCATE_BUFFER;
1295 error = AcpiGetObjectInfo(h, &buf);
1296 if (ACPI_FAILURE(error))
1298 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1300 /* If no _STA method, must be present */
1301 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1304 /* Return true for 'present' and 'functioning' */
1305 if ((devinfo->CurrentStatus & 0x9) == 0x9)
1308 AcpiOsFree(buf.Pointer);
1313 * Returns true if the battery is actually present and inserted.
1316 acpi_BatteryIsPresent(device_t dev)
1318 ACPI_DEVICE_INFO *devinfo;
1327 if ((h = acpi_get_handle(dev)) == NULL)
1330 buf.Length = ACPI_ALLOCATE_BUFFER;
1331 error = AcpiGetObjectInfo(h, &buf);
1332 if (ACPI_FAILURE(error))
1334 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1336 /* If no _STA method, must be present */
1337 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1340 /* Return true for 'present' and 'functioning' */
1341 if ((devinfo->CurrentStatus & 0x19) == 0x19)
1344 AcpiOsFree(buf.Pointer);
1349 * Match a HID string against a device
1352 acpi_MatchHid(device_t dev, char *hid)
1354 ACPI_DEVICE_INFO *devinfo;
1365 if ((h = acpi_get_handle(dev)) == NULL)
1368 buf.Length = ACPI_ALLOCATE_BUFFER;
1369 error = AcpiGetObjectInfo(h, &buf);
1370 if (ACPI_FAILURE(error))
1372 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1374 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
1375 strcmp(hid, devinfo->HardwareId.Value) == 0)
1377 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
1378 for (i = 0; i < devinfo->CompatibilityId.Count; i++) {
1379 if (strcmp(hid, devinfo->CompatibilityId.Id[i].Value) == 0) {
1386 AcpiOsFree(buf.Pointer);
1391 * Return the handle of a named object within our scope, ie. that of (parent)
1392 * or one if its parents.
1395 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1402 /* Walk back up the tree to the root */
1404 status = AcpiGetHandle(parent, path, &r);
1405 if (ACPI_SUCCESS(status)) {
1409 if (status != AE_NOT_FOUND)
1411 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1412 return (AE_NOT_FOUND);
1417 /* Find the difference between two PM tick counts. */
1419 acpi_TimerDelta(uint32_t end, uint32_t start)
1424 delta = end - start;
1425 else if (AcpiGbl_FADT->TmrValExt == 0)
1426 delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
1428 delta = ((0xFFFFFFFF - start) + end + 1);
1433 * Allocate a buffer with a preset data size.
1436 acpi_AllocBuffer(int size)
1440 buf = kmalloc(size + sizeof(*buf), M_ACPIDEV, M_INTWAIT);
1442 buf->Pointer = (void *)(buf + 1);
1447 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
1450 ACPI_OBJECT_LIST args;
1454 arg1.Type = ACPI_TYPE_INTEGER;
1455 arg1.Integer.Value = number;
1457 args.Pointer = &arg1;
1459 return (AcpiEvaluateObject(handle, path, &args, NULL));
1463 * Evaluate a path that should return an integer.
1466 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
1475 handle = ACPI_ROOT_OBJECT;
1478 * Assume that what we've been pointed at is an Integer object, or
1479 * a method that will return an Integer.
1481 buf.Pointer = ¶m;
1482 buf.Length = sizeof(param);
1483 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1484 if (ACPI_SUCCESS(status)) {
1485 if (param.Type == ACPI_TYPE_INTEGER)
1486 *number = param.Integer.Value;
1492 * In some applications, a method that's expected to return an Integer
1493 * may instead return a Buffer (probably to simplify some internal
1494 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1495 * convert it into an Integer as best we can.
1499 if (status == AE_BUFFER_OVERFLOW) {
1500 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
1501 status = AE_NO_MEMORY;
1503 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1504 if (ACPI_SUCCESS(status))
1505 status = acpi_ConvertBufferToInteger(&buf, number);
1506 AcpiOsFree(buf.Pointer);
1513 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
1519 p = (ACPI_OBJECT *)bufp->Pointer;
1520 if (p->Type == ACPI_TYPE_INTEGER) {
1521 *number = p->Integer.Value;
1524 if (p->Type != ACPI_TYPE_BUFFER)
1526 if (p->Buffer.Length > sizeof(int))
1527 return (AE_BAD_DATA);
1530 val = p->Buffer.Pointer;
1531 for (i = 0; i < p->Buffer.Length; i++)
1532 *number += val[i] << (i * 8);
1537 * Iterate over the elements of an a package object, calling the supplied
1538 * function for each element.
1540 * XXX possible enhancement might be to abort traversal on error.
1543 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
1544 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
1549 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
1550 return (AE_BAD_PARAMETER);
1552 /* Iterate over components */
1554 comp = pkg->Package.Elements;
1555 for (; i < pkg->Package.Count; i++, comp++)
1562 * Find the (index)th resource object in a set.
1565 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
1570 rp = (ACPI_RESOURCE *)buf->Pointer;
1574 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
1575 return (AE_BAD_PARAMETER);
1577 /* Check for terminator */
1578 if (rp->Id == ACPI_RSTYPE_END_TAG || rp->Length == 0)
1579 return (AE_NOT_FOUND);
1580 rp = ACPI_NEXT_RESOURCE(rp);
1589 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
1591 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
1592 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
1593 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
1596 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
1599 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
1604 /* Initialise the buffer if necessary. */
1605 if (buf->Pointer == NULL) {
1606 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
1607 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
1608 return (AE_NO_MEMORY);
1609 rp = (ACPI_RESOURCE *)buf->Pointer;
1610 rp->Id = ACPI_RSTYPE_END_TAG;
1617 * Scan the current buffer looking for the terminator.
1618 * This will either find the terminator or hit the end
1619 * of the buffer and return an error.
1621 rp = (ACPI_RESOURCE *)buf->Pointer;
1623 /* Range check, don't go outside the buffer */
1624 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
1625 return (AE_BAD_PARAMETER);
1626 if (rp->Id == ACPI_RSTYPE_END_TAG || rp->Length == 0)
1628 rp = ACPI_NEXT_RESOURCE(rp);
1632 * Check the size of the buffer and expand if required.
1635 * size of existing resources before terminator +
1636 * size of new resource and header +
1637 * size of terminator.
1639 * Note that this loop should really only run once, unless
1640 * for some reason we are stuffing a *really* huge resource.
1642 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
1643 res->Length + ACPI_RESOURCE_LENGTH_NO_DATA +
1644 ACPI_RESOURCE_LENGTH) >= buf->Length) {
1645 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
1646 return (AE_NO_MEMORY);
1647 bcopy(buf->Pointer, newp, buf->Length);
1648 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
1649 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
1650 AcpiOsFree(buf->Pointer);
1651 buf->Pointer = newp;
1652 buf->Length += buf->Length;
1655 /* Insert the new resource. */
1656 bcopy(res, rp, res->Length + ACPI_RESOURCE_LENGTH_NO_DATA);
1658 /* And add the terminator. */
1659 rp = ACPI_NEXT_RESOURCE(rp);
1660 rp->Id = ACPI_RSTYPE_END_TAG;
1667 * Set interrupt model.
1670 acpi_SetIntrModel(int model)
1672 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
1675 #define ACPI_MINIMUM_AWAKETIME 5
1678 acpi_sleep_enable(void *arg)
1680 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
1684 * Set the system sleep state
1686 * Currently we support S1-S5 but S4 is only S4BIOS
1689 acpi_SetSleepState(struct acpi_softc *sc, int state)
1691 ACPI_STATUS status = AE_OK;
1695 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
1698 /* Avoid reentry if already attempting to suspend. */
1699 if (sc->acpi_sstate != ACPI_STATE_S0)
1700 return_ACPI_STATUS (AE_BAD_PARAMETER);
1702 /* We recently woke up so don't suspend again for a while. */
1703 if (sc->acpi_sleep_disabled)
1704 return_ACPI_STATUS (AE_OK);
1711 status = AcpiGetSleepTypeData((UINT8)state, &TypeA, &TypeB);
1712 if (status == AE_NOT_FOUND) {
1713 device_printf(sc->acpi_dev,
1714 "Sleep state S%d not supported by BIOS\n", state);
1716 } else if (ACPI_FAILURE(status)) {
1717 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
1718 AcpiFormatException(status));
1722 sc->acpi_sstate = state;
1723 sc->acpi_sleep_disabled = 1;
1725 /* Disable all wake GPEs not appropriate for this state. */
1726 acpi_wake_limit_walk(state);
1728 /* Inform all devices that we are going to sleep. */
1729 if (DEVICE_SUSPEND(root_bus) != 0) {
1731 * Re-wake the system.
1733 * XXX note that a better two-pass approach with a 'veto' pass
1734 * followed by a "real thing" pass would be better, but the
1735 * current bus interface does not provide for this.
1737 DEVICE_RESUME(root_bus);
1738 return_ACPI_STATUS (AE_ERROR);
1741 status = AcpiEnterSleepStatePrep(state);
1742 if (ACPI_FAILURE(status)) {
1743 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
1744 AcpiFormatException(status));
1748 if (sc->acpi_sleep_delay > 0)
1749 DELAY(sc->acpi_sleep_delay * 1000000);
1751 if (state != ACPI_STATE_S1) {
1752 acpi_sleep_machdep(sc, state);
1754 /* AcpiEnterSleepState() may be incomplete, unlock if locked. */
1755 if (AcpiGbl_MutexInfo[ACPI_MTX_HARDWARE].OwnerId !=
1756 ACPI_MUTEX_NOT_ACQUIRED) {
1758 AcpiUtReleaseMutex(ACPI_MTX_HARDWARE);
1761 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
1762 if (state == ACPI_STATE_S4)
1765 status = AcpiEnterSleepState((UINT8)state);
1766 if (ACPI_FAILURE(status)) {
1767 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
1768 AcpiFormatException(status));
1772 AcpiLeaveSleepState((UINT8)state);
1773 DEVICE_RESUME(root_bus);
1774 sc->acpi_sstate = ACPI_STATE_S0;
1775 acpi_enable_fixed_events(sc);
1779 * Shut down cleanly and power off. This will call us back through the
1780 * shutdown handlers.
1782 shutdown_nice(RB_POWEROFF);
1786 status = AE_BAD_PARAMETER;
1790 /* Disable a second sleep request for a short period */
1791 if (sc->acpi_sleep_disabled)
1792 callout_reset(&sc->acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME,
1793 acpi_sleep_enable, sc);
1795 return_ACPI_STATUS (status);
1798 /* Initialize a device's wake GPE. */
1800 acpi_wake_init(device_t dev, int type)
1802 struct acpi_prw_data prw;
1804 /* Check that the device can wake the system. */
1805 if ((device_get_flags(dev) & ACPI_FLAG_WAKE_CAPABLE) == 0)
1808 /* Evaluate _PRW to find the GPE. */
1809 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
1812 /* Set the requested type for the GPE (runtime, wake, or both). */
1813 if (ACPI_FAILURE(AcpiSetGpeType(prw.gpe_handle, prw.gpe_bit, type))) {
1814 device_printf(dev, "set GPE type failed\n");
1821 /* Enable or disable the device's wake GPE. */
1823 acpi_wake_set_enable(device_t dev, int enable)
1825 struct acpi_prw_data prw;
1830 /* Make sure the device supports waking the system. */
1831 flags = device_get_flags(dev);
1832 handle = acpi_get_handle(dev);
1833 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
1836 /* Evaluate _PRW to find the GPE. */
1837 if (acpi_parse_prw(handle, &prw) != 0)
1841 status = AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1842 if (ACPI_FAILURE(status)) {
1843 device_printf(dev, "enable wake failed\n");
1846 device_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
1848 status = AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1849 if (ACPI_FAILURE(status)) {
1850 device_printf(dev, "disable wake failed\n");
1853 device_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
1859 /* Configure a device's GPE appropriately for the new sleep state. */
1861 acpi_wake_sleep_prep(device_t dev, int sstate)
1863 struct acpi_prw_data prw;
1867 /* Check that this is an ACPI device and get its GPE. */
1868 flags = device_get_flags(dev);
1869 handle = acpi_get_handle(dev);
1870 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
1873 /* Evaluate _PRW to find the GPE. */
1874 if (acpi_parse_prw(handle, &prw) != 0)
1878 * TBD: All Power Resources referenced by elements 2 through N
1879 * of the _PRW object are put into the ON state.
1883 * If the user requested that this device wake the system and the next
1884 * sleep state is valid for this GPE, enable it and the device's wake
1885 * capability. The sleep state must be less than (i.e., higher power)
1886 * or equal to the value specified by _PRW. Return early, leaving
1887 * the appropriate power resources enabled.
1889 if ((flags & ACPI_FLAG_WAKE_ENABLED) != 0 &&
1890 sstate <= prw.lowest_wake) {
1892 device_printf(dev, "wake_prep enabled gpe %#x for state %d\n",
1893 prw.gpe_bit, sstate);
1894 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1895 acpi_SetInteger(handle, "_PSW", 1);
1900 * If the device wake was disabled or this sleep state is too low for
1901 * this device, disable its wake capability and GPE.
1903 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1904 acpi_SetInteger(handle, "_PSW", 0);
1906 device_printf(dev, "wake_prep disabled gpe %#x for state %d\n",
1907 prw.gpe_bit, sstate);
1910 * TBD: All Power Resources referenced by elements 2 through N
1911 * of the _PRW object are put into the OFF state.
1917 /* Re-enable GPEs after wake. */
1919 acpi_wake_run_prep(device_t dev)
1921 struct acpi_prw_data prw;
1925 /* Check that this is an ACPI device and get its GPE. */
1926 flags = device_get_flags(dev);
1927 handle = acpi_get_handle(dev);
1928 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
1931 /* Evaluate _PRW to find the GPE. */
1932 if (acpi_parse_prw(handle, &prw) != 0)
1936 * TBD: Be sure all Power Resources referenced by elements 2 through N
1937 * of the _PRW object are in the ON state.
1940 /* Disable wake capability and if the user requested, enable the GPE. */
1941 acpi_SetInteger(handle, "_PSW", 0);
1942 if ((flags & ACPI_FLAG_WAKE_ENABLED) != 0)
1943 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1948 acpi_wake_limit(ACPI_HANDLE h, UINT32 level, void *context, void **status)
1950 struct acpi_prw_data prw;
1953 /* It's ok not to have _PRW if the device can't wake the system. */
1954 if (acpi_parse_prw(h, &prw) != 0)
1957 sstate = (int *)context;
1958 if (*sstate > prw.lowest_wake)
1959 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1964 /* Walk all system devices, disabling them if necessary for sstate. */
1966 acpi_wake_limit_walk(int sstate)
1968 ACPI_HANDLE sb_handle;
1970 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
1971 AcpiWalkNamespace(ACPI_TYPE_ANY, sb_handle, 100,
1972 acpi_wake_limit, &sstate, NULL);
1976 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
1978 acpi_wake_sysctl_walk(device_t dev)
1980 int error, i, numdevs;
1984 error = device_get_children(dev, &devlist, &numdevs);
1985 if (error != 0 || numdevs == 0)
1987 for (i = 0; i < numdevs; i++) {
1989 if (!device_is_attached(child))
1991 if (device_get_flags(child) & ACPI_FLAG_WAKE_CAPABLE) {
1993 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
1994 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
1995 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
1996 acpi_wake_set_sysctl, "I", "Device set to wake the system");
1997 #endif /* dfly_notyet */
1999 acpi_wake_sysctl_walk(child);
2001 kfree(devlist, M_TEMP);
2007 /* Enable or disable wake from userland. */
2009 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2014 dev = (device_t)arg1;
2015 enable = (device_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
2017 error = sysctl_handle_int(oidp, &enable, 0, req);
2018 if (error != 0 || req->newptr == NULL)
2020 if (enable != 0 && enable != 1)
2023 return (acpi_wake_set_enable(dev, enable));
2025 #endif /* dfly_notyet */
2027 /* Parse a device's _PRW into a structure. */
2029 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2032 ACPI_BUFFER prw_buffer;
2033 ACPI_OBJECT *res, *res2;
2036 if (h == NULL || prw == NULL)
2040 * The _PRW object (7.2.9) is only required for devices that have the
2041 * ability to wake the system from a sleeping state.
2044 prw_buffer.Pointer = NULL;
2045 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2046 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2047 if (ACPI_FAILURE(status))
2049 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2052 if (!ACPI_PKG_VALID(res, 2))
2056 * Element 1 of the _PRW object:
2057 * The lowest power system sleeping state that can be entered while still
2058 * providing wake functionality. The sleeping state being entered must
2059 * be less than (i.e., higher power) or equal to this value.
2061 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2065 * Element 0 of the _PRW object:
2067 switch (res->Package.Elements[0].Type) {
2068 case ACPI_TYPE_INTEGER:
2070 * If the data type of this package element is numeric, then this
2071 * _PRW package element is the bit index in the GPEx_EN, in the
2072 * GPE blocks described in the FADT, of the enable bit that is
2073 * enabled for the wake event.
2075 prw->gpe_handle = NULL;
2076 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2079 case ACPI_TYPE_PACKAGE:
2081 * If the data type of this package element is a package, then this
2082 * _PRW package element is itself a package containing two
2083 * elements. The first is an object reference to the GPE Block
2084 * device that contains the GPE that will be triggered by the wake
2085 * event. The second element is numeric and it contains the bit
2086 * index in the GPEx_EN, in the GPE Block referenced by the
2087 * first element in the package, of the enable bit that is enabled for
2090 * For example, if this field is a package then it is of the form:
2091 * Package() {\_SB.PCI0.ISA.GPE, 2}
2093 res2 = &res->Package.Elements[0];
2094 if (!ACPI_PKG_VALID(res2, 2))
2096 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2097 if (prw->gpe_handle == NULL)
2099 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2107 /* XXX No power resource handling yet. */
2108 prw->power_res = NULL;
2111 if (prw_buffer.Pointer != NULL)
2112 AcpiOsFree(prw_buffer.Pointer);
2117 * Enable/Disable ACPI
2120 acpi_Enable(struct acpi_softc *sc)
2125 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2128 flags = ACPI_NO_ADDRESS_SPACE_INIT | ACPI_NO_HARDWARE_INIT |
2129 ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
2130 if (!sc->acpi_enabled)
2131 status = AcpiEnableSubsystem(flags);
2135 if (status == AE_OK)
2136 sc->acpi_enabled = 1;
2138 return_ACPI_STATUS (status);
2142 acpi_Disable(struct acpi_softc *sc)
2146 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2149 if (sc->acpi_enabled)
2150 status = AcpiDisable();
2154 if (status == AE_OK)
2155 sc->acpi_enabled = 0;
2157 return_ACPI_STATUS (status);
2161 * ACPI Event Handlers
2164 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2167 acpi_system_eventhandler_sleep(void *arg, int state)
2170 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2173 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
2174 acpi_SetSleepState((struct acpi_softc *)arg, state);
2180 acpi_system_eventhandler_wakeup(void *arg, int state)
2183 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2185 /* Well, what to do? :-) */
2194 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2197 acpi_event_power_button_sleep(void *context)
2199 struct acpi_softc *sc = (struct acpi_softc *)context;
2201 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2203 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2205 return_VALUE (ACPI_INTERRUPT_HANDLED);
2209 acpi_event_power_button_wake(void *context)
2211 struct acpi_softc *sc = (struct acpi_softc *)context;
2213 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2215 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2217 return_VALUE (ACPI_INTERRUPT_HANDLED);
2221 acpi_event_sleep_button_sleep(void *context)
2223 struct acpi_softc *sc = (struct acpi_softc *)context;
2225 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2227 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2229 return_VALUE (ACPI_INTERRUPT_HANDLED);
2233 acpi_event_sleep_button_wake(void *context)
2235 struct acpi_softc *sc = (struct acpi_softc *)context;
2237 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2239 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2241 return_VALUE (ACPI_INTERRUPT_HANDLED);
2245 * XXX This is kinda ugly, and should not be here.
2247 struct acpi_staticbuf {
2253 acpi_name(ACPI_HANDLE handle)
2255 static struct acpi_staticbuf buf;
2259 buf.buffer.Length = 512;
2260 buf.buffer.Pointer = &buf.data[0];
2262 if (ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer)))
2263 return (buf.buffer.Pointer);
2265 return ("(unknown path)");
2269 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2270 * parts of the namespace.
2273 acpi_avoid(ACPI_HANDLE handle)
2275 char *cp, *env, *np;
2278 np = acpi_name(handle);
2281 if ((env = kgetenv("debug.acpi.avoid.paths")) == NULL &&
2282 (env = kgetenv("debug.acpi.avoid")) == NULL)
2285 /* Scan the avoid list checking for a match */
2288 while ((*cp != 0) && isspace(*cp))
2293 while ((cp[len] != 0) && !isspace(cp[len]))
2295 if (!strncmp(cp, np, len)) {
2307 * Debugging/bug-avoidance. Disable ACPI subsystem components. Note that
2308 * some components may be disabled by default and can only be enabled
2309 * via acpi_enabled() (debug.acpi.enabled).
2312 acpi_disabled(char *subsys)
2317 if ((env = kgetenv("debug.acpi.disabled")) == NULL)
2319 if (strcmp(env, "all") == 0) {
2324 /* Scan the disable list, checking for a match. */
2327 while (*cp != '\0' && isspace(*cp))
2332 while (cp[len] != '\0' && !isspace(cp[len]))
2334 if (strncmp(cp, subsys, len) == 0) {
2346 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
2347 * components are enabled by default. The ones that are not have to be
2348 * enabled via debug.acpi.enabled.
2351 acpi_enabled(char *subsys)
2356 if ((env = kgetenv("debug.acpi.enabled")) == NULL)
2358 if (strcmp(env, "all") == 0) {
2363 /* Scan the enable list, checking for a match. */
2366 while (*cp != '\0' && isspace(*cp))
2371 while (cp[len] != '\0' && !isspace(cp[len]))
2373 if (strncmp(cp, subsys, len) == 0) {
2385 * Control interface.
2387 * We multiplex ioctls for all participating ACPI devices here. Individual
2388 * drivers wanting to be accessible via /dev/acpi should use the
2389 * register/deregister interface to make their handlers visible.
2391 struct acpi_ioctl_hook
2393 TAILQ_ENTRY(acpi_ioctl_hook) link;
2399 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
2400 static int acpi_ioctl_hooks_initted;
2403 * Register an ioctl handler.
2406 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
2408 struct acpi_ioctl_hook *hp;
2410 hp = kmalloc(sizeof(*hp), M_ACPIDEV, M_INTWAIT);
2414 if (acpi_ioctl_hooks_initted == 0) {
2415 TAILQ_INIT(&acpi_ioctl_hooks);
2416 acpi_ioctl_hooks_initted = 1;
2418 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
2423 * Deregister an ioctl handler.
2426 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
2428 struct acpi_ioctl_hook *hp;
2430 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
2431 if ((hp->cmd == cmd) && (hp->fn == fn))
2435 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
2436 kfree(hp, M_ACPIDEV);
2441 acpiopen(struct dev_open_args *ap)
2447 acpiclose(struct dev_close_args *ap)
2453 acpiioctl(struct dev_ioctl_args *ap)
2455 struct acpi_softc *sc;
2456 struct acpi_ioctl_hook *hp;
2457 int error, xerror, state;
2463 sc = ap->a_head.a_dev->si_drv1;
2466 * Scan the list of registered ioctls, looking for handlers.
2468 if (acpi_ioctl_hooks_initted) {
2469 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
2470 if (hp->cmd == ap->a_cmd) {
2471 xerror = hp->fn(ap->a_cmd, ap->a_data, hp->arg);
2480 * Core ioctls are not permitted for non-writable user.
2481 * Currently, other ioctls just fetch information.
2482 * Not changing system behavior.
2484 if((ap->a_fflag & FWRITE) == 0) {
2489 /* Core system ioctls. */
2490 switch (ap->a_cmd) {
2492 if (ACPI_FAILURE(acpi_Enable(sc)))
2495 case ACPIIO_DISABLE:
2496 if (ACPI_FAILURE(acpi_Disable(sc)))
2499 case ACPIIO_SETSLPSTATE:
2500 if (!sc->acpi_enabled) {
2504 state = *(int *)ap->a_data;
2505 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) {
2506 if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
2524 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2526 char sleep_state[4];
2529 UINT8 state, TypeA, TypeB;
2532 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++) {
2533 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
2534 sprintf(sleep_state, "S%d ", state);
2535 strcat(buf, sleep_state);
2538 error = sysctl_handle_string(oidp, buf, sizeof(buf), req);
2543 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2545 char sleep_state[10];
2547 u_int new_state, old_state;
2549 old_state = *(u_int *)oidp->oid_arg1;
2550 if (old_state > ACPI_S_STATES_MAX + 1) {
2551 strcpy(sleep_state, "unknown");
2553 bzero(sleep_state, sizeof(sleep_state));
2554 strncpy(sleep_state, sleep_state_names[old_state],
2555 sizeof(sleep_state_names[old_state]));
2557 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
2558 if (error == 0 && req->newptr != NULL) {
2559 new_state = ACPI_STATE_S0;
2560 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++) {
2561 if (strncmp(sleep_state, sleep_state_names[new_state],
2562 sizeof(sleep_state)) == 0)
2565 if (new_state <= ACPI_S_STATES_MAX + 1) {
2566 if (new_state != old_state)
2567 *(u_int *)oidp->oid_arg1 = new_state;
2576 /* Inform devctl(4) when we receive a Notify. */
2578 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
2580 char notify_buf[16];
2581 ACPI_BUFFER handle_buf;
2584 if (subsystem == NULL)
2587 handle_buf.Pointer = NULL;
2588 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
2589 status = AcpiNsHandleToPathname(h, &handle_buf);
2590 if (ACPI_FAILURE(status))
2592 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
2594 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
2596 AcpiOsFree(handle_buf.Pointer);
2601 * Support for parsing debug options from the kernel environment.
2603 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
2604 * by specifying the names of the bits in the debug.acpi.layer and
2605 * debug.acpi.level environment variables. Bits may be unset by
2606 * prefixing the bit name with !.
2614 static struct debugtag dbg_layer[] = {
2615 {"ACPI_UTILITIES", ACPI_UTILITIES},
2616 {"ACPI_HARDWARE", ACPI_HARDWARE},
2617 {"ACPI_EVENTS", ACPI_EVENTS},
2618 {"ACPI_TABLES", ACPI_TABLES},
2619 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
2620 {"ACPI_PARSER", ACPI_PARSER},
2621 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
2622 {"ACPI_EXECUTER", ACPI_EXECUTER},
2623 {"ACPI_RESOURCES", ACPI_RESOURCES},
2624 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
2625 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
2626 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
2627 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
2629 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
2630 {"ACPI_BATTERY", ACPI_BATTERY},
2631 {"ACPI_BUS", ACPI_BUS},
2632 {"ACPI_BUTTON", ACPI_BUTTON},
2633 {"ACPI_EC", ACPI_EC},
2634 {"ACPI_FAN", ACPI_FAN},
2635 {"ACPI_POWERRES", ACPI_POWERRES},
2636 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
2637 {"ACPI_THERMAL", ACPI_THERMAL},
2638 {"ACPI_TIMER", ACPI_TIMER},
2639 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
2643 static struct debugtag dbg_level[] = {
2644 {"ACPI_LV_ERROR", ACPI_LV_ERROR},
2645 {"ACPI_LV_WARN", ACPI_LV_WARN},
2646 {"ACPI_LV_INIT", ACPI_LV_INIT},
2647 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
2648 {"ACPI_LV_INFO", ACPI_LV_INFO},
2649 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
2651 /* Trace verbosity level 1 [Standard Trace Level] */
2652 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
2653 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
2654 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
2655 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
2656 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
2657 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
2658 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
2659 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
2660 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
2661 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
2662 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
2663 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
2664 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
2665 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
2666 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
2668 /* Trace verbosity level 2 [Function tracing and memory allocation] */
2669 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
2670 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
2671 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
2672 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
2673 {"ACPI_LV_ALL", ACPI_LV_ALL},
2675 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
2676 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
2677 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
2678 {"ACPI_LV_IO", ACPI_LV_IO},
2679 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
2680 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
2682 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
2683 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
2684 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
2685 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
2686 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
2687 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
2692 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
2704 while (*ep && !isspace(*ep))
2715 for (i = 0; tag[i].name != NULL; i++) {
2716 if (!strncmp(cp, tag[i].name, l)) {
2718 *flag |= tag[i].value;
2720 *flag &= ~tag[i].value;
2728 acpi_set_debugging(void *junk)
2730 char *layer, *level;
2737 layer = kgetenv("debug.acpi.layer");
2738 level = kgetenv("debug.acpi.level");
2739 if (layer == NULL && level == NULL)
2742 printf("ACPI set debug");
2743 if (layer != NULL) {
2744 if (strcmp("NONE", layer) != 0)
2745 printf(" layer '%s'", layer);
2746 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
2749 if (level != NULL) {
2750 if (strcmp("NONE", level) != 0)
2751 printf(" level '%s'", level);
2752 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
2757 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
2761 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
2764 struct debugtag *tag;
2767 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
2769 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
2770 tag = &dbg_layer[0];
2771 dbg = &AcpiDbgLayer;
2773 tag = &dbg_level[0];
2774 dbg = &AcpiDbgLevel;
2777 /* Get old values if this is a get request. */
2779 sbuf_cpy(&sb, "NONE");
2780 } else if (req->newptr == NULL) {
2781 for (; tag->name != NULL; tag++) {
2782 if ((*dbg & tag->value) == tag->value)
2783 sbuf_printf(&sb, "%s ", tag->name);
2789 /* Copy out the old values to the user. */
2790 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
2793 /* If the user is setting a string, parse it. */
2794 if (error == 0 && req->newptr != NULL) {
2796 /* XXX setenv((char *)oidp->oid_arg1, (char *)req->newptr); */
2797 acpi_set_debugging(NULL);
2802 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
2803 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
2804 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
2805 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
2809 acpi_pm_func(u_long cmd, void *arg, ...)
2811 int state, acpi_state;
2813 struct acpi_softc *sc;
2818 case POWER_CMD_SUSPEND:
2819 sc = (struct acpi_softc *)arg;
2826 state = va_arg(ap, int);
2830 case POWER_SLEEP_STATE_STANDBY:
2831 acpi_state = sc->acpi_standby_sx;
2833 case POWER_SLEEP_STATE_SUSPEND:
2834 acpi_state = sc->acpi_suspend_sx;
2836 case POWER_SLEEP_STATE_HIBERNATE:
2837 acpi_state = ACPI_STATE_S4;
2844 acpi_SetSleepState(sc, acpi_state);
2856 acpi_pm_register(void *arg)
2858 if (!cold || resource_disabled("acpi", 0))
2861 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
2864 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);