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 1.24 2006/10/25 20:55:52 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/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>
51 #include <sys/thread2.h>
53 #include <machine/clock.h>
54 #include <machine/globaldata.h>
55 #include <bus/isa/isavar.h>
58 #include <dev/acpica5/acpivar.h>
59 #include <dev/acpica5/acpiio.h>
62 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
64 /* Hooks for the ACPI CA debugging infrastructure */
65 #define _COMPONENT ACPI_BUS
66 ACPI_MODULE_NAME("ACPI")
68 static d_open_t acpiopen;
69 static d_close_t acpiclose;
70 static d_ioctl_t acpiioctl;
72 #define CDEV_MAJOR 152
73 static struct dev_ops acpi_ops = {
74 { "acpi", CDEV_MAJOR, 0 },
80 #if __FreeBSD_version >= 500000
81 struct mtx acpi_mutex;
90 #define ACPI_OEM_REV_ANY 0
92 static struct acpi_quirks acpi_quirks_table[] = {
94 /* Bad PCI routing table. Used on some SuperMicro boards. */
95 { "PTLTD ", 0x06040000, "pci_link" },
101 static int acpi_modevent(struct module *mod, int event, void *junk);
102 static int acpi_identify(driver_t *driver, device_t parent);
103 static int acpi_probe(device_t dev);
104 static int acpi_attach(device_t dev);
105 static int acpi_shutdown(device_t dev);
106 static void acpi_quirks_set(void);
107 static device_t acpi_add_child(device_t bus, device_t parent, int order,
108 const char *name, int unit);
109 static int acpi_print_child(device_t bus, device_t child);
110 static int acpi_read_ivar(device_t dev, device_t child, int index,
112 static int acpi_write_ivar(device_t dev, device_t child, int index,
114 static int acpi_set_resource(device_t dev, device_t child, int type,
115 int rid, u_long start, u_long count);
116 static int acpi_get_resource(device_t dev, device_t child, int type,
117 int rid, u_long *startp, u_long *countp);
118 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
119 int type, int *rid, u_long start, u_long end,
120 u_long count, u_int flags);
121 static int acpi_release_resource(device_t bus, device_t child, int type,
122 int rid, struct resource *r);
123 static uint32_t acpi_isa_get_logicalid(device_t dev);
124 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
125 static int acpi_isa_pnp_probe(device_t bus, device_t child,
126 struct isa_pnp_id *ids);
127 static void acpi_probe_children(device_t bus);
128 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
129 void *context, void **status);
130 static void acpi_shutdown_pre_sync(void *arg, int howto);
131 static void acpi_shutdown_final(void *arg, int howto);
132 static void acpi_shutdown_poweroff(void *arg);
133 static void acpi_enable_fixed_events(struct acpi_softc *sc);
134 static int acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw);
135 static ACPI_STATUS acpi_wake_limit(ACPI_HANDLE h, UINT32 level, void *context,
137 static int acpi_wake_limit_walk(int sstate);
138 static int acpi_wake_sysctl_walk(device_t dev);
140 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
142 static void acpi_system_eventhandler_sleep(void *arg, int state);
143 static void acpi_system_eventhandler_wakeup(void *arg, int state);
144 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
145 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
146 static int acpi_pm_func(u_long cmd, void *arg, ...);
147 static int acpi_child_location_str_method(device_t acdev, device_t child,
148 char *buf, size_t buflen);
149 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
150 char *buf, size_t buflen);
152 static device_method_t acpi_methods[] = {
153 /* Device interface */
154 DEVMETHOD(device_identify, acpi_identify),
155 DEVMETHOD(device_probe, acpi_probe),
156 DEVMETHOD(device_attach, acpi_attach),
157 DEVMETHOD(device_shutdown, acpi_shutdown),
158 DEVMETHOD(device_detach, bus_generic_detach),
159 DEVMETHOD(device_suspend, bus_generic_suspend),
160 DEVMETHOD(device_resume, bus_generic_resume),
163 DEVMETHOD(bus_add_child, acpi_add_child),
164 DEVMETHOD(bus_print_child, acpi_print_child),
165 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
166 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
167 DEVMETHOD(bus_set_resource, acpi_set_resource),
168 DEVMETHOD(bus_get_resource, acpi_get_resource),
169 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
170 DEVMETHOD(bus_release_resource, acpi_release_resource),
171 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
172 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
173 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
174 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
175 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
176 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
177 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
180 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
185 static driver_t acpi_driver = {
188 sizeof(struct acpi_softc),
191 static devclass_t acpi_devclass;
192 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
193 MODULE_VERSION(acpi, 1);
195 static const char* sleep_state_names[] = {
196 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
198 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RW, NULL, "ACPI debugging");
199 static char acpi_ca_version[12];
200 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
201 acpi_ca_version, 0, "Version of Intel ACPI-CA");
204 * Allow override of whether methods execute in parallel or not.
205 * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
206 * errors for AML that really can't handle parallel method execution.
207 * It is off by default since this breaks recursive methods and
208 * some IBMs use such code.
210 static int acpi_serialize_methods;
211 TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
214 * ACPI can only be loaded as a module by the loader; activating it after
215 * system bootstrap time is not useful, and can be fatal to the system.
216 * It also cannot be unloaded, since the entire system bus heirarchy hangs
220 acpi_modevent(struct module *mod, int event, void *junk)
225 printf("The ACPI driver cannot be loaded after boot.\n");
230 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
240 * Perform early initialization.
248 static int error, started = 0;
250 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
253 return_VALUE (error);
256 #if __FreeBSD_version >= 500000
257 /* Initialise the ACPI mutex */
258 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
262 * Set the globals from our tunables. This is needed because ACPI-CA
263 * uses UINT8 for some values and we have no tunable_byte.
265 AcpiGbl_AllMethodsSerialized = (UINT8)acpi_serialize_methods;
267 /* Start up the ACPI CA subsystem. */
269 debugpoint = kgetenv("debug.acpi.debugger");
271 if (!strcmp(debugpoint, "init"))
272 acpi_EnterDebugger();
276 if (ACPI_FAILURE(error = AcpiInitializeSubsystem())) {
277 printf("ACPI: initialisation failed: %s\n", AcpiFormatException(error));
278 return_VALUE (error);
281 debugpoint = kgetenv("debug.acpi.debugger");
283 if (!strcmp(debugpoint, "tables"))
284 acpi_EnterDebugger();
289 if (ACPI_FAILURE(error = AcpiLoadTables())) {
290 printf("ACPI: table load failed: %s\n", AcpiFormatException(error));
294 /* Set up any quirks we have for this XSDT. */
296 if (acpi_disabled("acpi"))
297 return_VALUE (AE_ERROR);
299 return_VALUE (AE_OK);
303 * Detect ACPI, perform early initialisation
306 acpi_identify(driver_t *driver, device_t parent)
311 * No sense rescanning an ACPI 'bus'.
313 if (device_get_state(parent) == DS_ATTACHED)
316 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
321 /* Check that we haven't been disabled with a hint. */
322 if (resource_disabled("acpi", 0))
325 /* Make sure we're not being doubly invoked. */
326 if (device_find_child(parent, "acpi", 0) != NULL)
329 /* Initialize ACPI-CA. */
330 if (ACPI_FAILURE(acpi_Startup()))
333 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%#x", ACPI_CA_VERSION);
335 /* Attach the actual ACPI device. */
336 if ((child = BUS_ADD_CHILD(parent, parent, 0, "acpi", 0)) == NULL) {
337 device_printf(parent, "ACPI: could not attach\n");
344 * Fetch some descriptive data from ACPI to put in our attach message
347 acpi_probe(device_t dev)
349 ACPI_TABLE_HEADER th;
356 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
358 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
359 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
361 device_printf(dev, "Other PM system enabled.\n");
367 if (ACPI_FAILURE(status = AcpiGetTableHeader(ACPI_TABLE_XSDT, 1, &th))) {
368 device_printf(dev, "couldn't get XSDT header: %s\n",
369 AcpiFormatException(status));
372 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
373 sbuf_bcat(&sb, th.OemId, 6);
376 sbuf_bcat(&sb, th.OemTableId, 8);
379 device_set_desc_copy(dev, sbuf_data(&sb));
388 acpi_attach(device_t dev)
390 struct acpi_softc *sc;
401 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
403 sc = device_get_softc(dev);
404 bzero(sc, sizeof(*sc));
406 callout_init(&sc->acpi_sleep_timer);
409 debugpoint = kgetenv("debug.acpi.debugger");
411 if (!strcmp(debugpoint, "spaces"))
412 acpi_EnterDebugger();
417 /* Install the default address space handlers. */
419 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
420 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
421 if (ACPI_FAILURE(status)) {
422 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
423 AcpiFormatException(status));
426 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
427 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
428 if (ACPI_FAILURE(status)) {
429 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
430 AcpiFormatException(status));
433 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
434 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
435 if (ACPI_FAILURE(status)) {
436 device_printf(dev, "could not initialise PciConfig handler: %s\n",
437 AcpiFormatException(status));
442 * Bring ACPI fully online.
444 * Note that some systems (specifically, those with namespace evaluation
445 * issues that require the avoidance of parts of the namespace) must
446 * avoid running _INI and _STA on everything, as well as dodging the final
449 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
450 * For avoiding portions of the namespace without totally disabling _INI
451 * and _STA, use "debug.acpi.avoid.paths".
453 * XXX We should arrange for the object init pass after we have attached
454 * all our child devices, but on many systems it works here.
457 debugpoint = kgetenv("debug.acpi.debugger");
459 if (!strcmp(debugpoint, "enable"))
460 acpi_EnterDebugger();
465 if (testenv("debug.acpi.avoid"))
466 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
467 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
468 device_printf(dev, "Could not enable ACPI: %s\n",
469 AcpiFormatException(status));
474 * Call the ECDT probe function to provide EC functionality before
475 * the namespace has been evaluated.
477 acpi_ec_ecdt_probe(dev);
479 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
480 device_printf(dev, "Could not initialize ACPI objects: %s\n",
481 AcpiFormatException(status));
486 * Setup our sysctl tree.
488 * XXX: This doesn't check to make sure that none of these fail.
490 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
491 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
492 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
493 device_get_name(dev), CTLFLAG_RD, 0, "");
494 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
495 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
496 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
497 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
498 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
499 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
500 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
501 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
502 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
503 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
504 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
505 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
506 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
507 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
508 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
509 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
510 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
511 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
512 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
513 OID_AUTO, "sleep_delay", CTLFLAG_RD | CTLFLAG_RW,
514 &sc->acpi_sleep_delay, 0, "sleep delay");
515 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
516 OID_AUTO, "s4bios", CTLFLAG_RD | CTLFLAG_RW,
517 &sc->acpi_s4bios, 0, "S4BIOS mode");
518 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
519 OID_AUTO, "verbose", CTLFLAG_RD | CTLFLAG_RW,
520 &sc->acpi_verbose, 0, "verbose mode");
521 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
522 OID_AUTO, "disable_on_poweroff", CTLFLAG_RD | CTLFLAG_RW,
523 &sc->acpi_disable_on_poweroff, 0, "ACPI subsystem disable on poweroff");
526 * Default to 1 second before sleeping to give some machines time to
529 sc->acpi_sleep_delay = 1;
530 sc->acpi_disable_on_poweroff = 0;
532 sc->acpi_verbose = 1;
533 if ((env = kgetenv("hw.acpi.verbose")) && strcmp(env, "0")) {
534 sc->acpi_verbose = 1;
538 /* Only enable S4BIOS by default if the FACS says it is available. */
539 if (AcpiGbl_FACS->S4Bios_f != 0)
543 * Dispatch the default sleep state to devices. The lid switch is set
544 * to NONE by default to avoid surprising users.
546 sc->acpi_power_button_sx = ACPI_STATE_S5;
547 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
548 sc->acpi_standby_sx = ACPI_STATE_S1;
549 sc->acpi_suspend_sx = ACPI_STATE_S3;
551 /* Pick the first valid sleep state for the sleep button default. */
552 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
553 for (state = ACPI_STATE_S1; state < ACPI_STATE_S5; state++)
554 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
555 sc->acpi_sleep_button_sx = state;
559 acpi_enable_fixed_events(sc);
562 * Scan the namespace and attach/initialise children.
565 debugpoint = kgetenv("debug.acpi.debugger");
567 if (!strcmp(debugpoint, "probe"))
568 acpi_EnterDebugger();
573 /* Register our shutdown handlers */
574 EVENTHANDLER_REGISTER(shutdown_pre_sync, acpi_shutdown_pre_sync, sc,
576 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
580 * Register our acpi event handlers.
581 * XXX should be configurable eg. via userland policy manager.
583 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
584 sc, ACPI_EVENT_PRI_LAST);
585 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
586 sc, ACPI_EVENT_PRI_LAST);
588 /* Flag our initial states. */
589 sc->acpi_enabled = 1;
590 sc->acpi_sstate = ACPI_STATE_S0;
591 sc->acpi_sleep_disabled = 0;
593 /* Create the control device */
594 dev_ops_add(&acpi_ops, 0, 0);
595 sc->acpi_dev_t = make_dev(&acpi_ops, 0, UID_ROOT, GID_WHEEL, 0644,
597 sc->acpi_dev_t->si_drv1 = sc;
600 debugpoint = kgetenv("debug.acpi.debugger");
602 if (strcmp(debugpoint, "running") == 0)
603 acpi_EnterDebugger();
608 if ((error = acpi_task_thread_init()))
611 if ((error = acpi_machdep_init(dev)))
614 /* Register ACPI again to pass the correct argument of pm_func. */
615 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
617 if (!acpi_disabled("bus"))
618 acpi_probe_children(dev);
624 return_VALUE (error);
628 acpi_shutdown(device_t dev)
630 /* Allow children to shutdown first. */
631 bus_generic_shutdown(dev);
633 /* Disable all wake GPEs not appropriate for reboot/poweroff. */
634 acpi_wake_limit_walk(ACPI_STATE_S5);
639 acpi_quirks_set(void)
641 XSDT_DESCRIPTOR *xsdt;
642 struct acpi_quirks *quirk;
647 * If the user loaded a custom table or disabled "quirks", leave
648 * the settings alone.
651 if ((env = kgetenv("acpi_dsdt_load")) != NULL) {
652 /* XXX No strcasecmp but this is good enough. */
653 if (*env == 'Y' || *env == 'y')
657 if ((env = kgetenv("debug.acpi.disabled")) != NULL) {
658 if (strstr("quirks", env) != NULL)
664 * Search through our quirk table and concatenate the disabled
665 * values with whatever we find.
668 for (quirk = acpi_quirks_table; quirk->OemId; quirk++) {
669 if (!strncmp(xsdt->OemId, quirk->OemId, strlen(quirk->OemId)) &&
670 (xsdt->OemRevision == quirk->OemRevision ||
671 quirk->OemRevision == ACPI_OEM_REV_ANY)) {
672 len += strlen(quirk->value) + 2;
673 if ((tmp = kmalloc(len, M_TEMP, M_NOWAIT)) == NULL)
675 sprintf(tmp, "%s %s", env ? env : "", quirk->value);
677 setenv("debug.acpi.disabled", tmp);
690 * Handle a new device being added
693 acpi_add_child(device_t bus, device_t parent, int order,
694 const char *name, int unit)
696 struct acpi_device *ad;
699 ad = kmalloc(sizeof(*ad), M_ACPIDEV, M_INTWAIT | M_ZERO);
701 resource_list_init(&ad->ad_rl);
703 child = device_add_child_ordered(parent, order, name, unit);
705 device_set_ivars(child, ad);
710 acpi_print_child(device_t bus, device_t child)
712 struct acpi_device *adev = device_get_ivars(child);
713 struct resource_list *rl = &adev->ad_rl;
716 retval += bus_print_child_header(bus, child);
717 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
718 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
719 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
720 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
721 retval += bus_print_child_footer(bus, child);
726 /* Location hint for devctl(8) */
728 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
731 struct acpi_device *dinfo = device_get_ivars(child);
733 if (dinfo->ad_handle)
734 snprintf(buf, buflen, "path=%s", acpi_name(dinfo->ad_handle));
736 snprintf(buf, buflen, "magic=unknown");
740 /* PnP information for devctl(8) */
742 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
745 ACPI_BUFFER adbuf = {ACPI_ALLOCATE_BUFFER, NULL};
746 ACPI_DEVICE_INFO *adinfo;
747 struct acpi_device *dinfo = device_get_ivars(child);
751 error = AcpiGetObjectInfo(dinfo->ad_handle, &adbuf);
752 adinfo = (ACPI_DEVICE_INFO *) adbuf.Pointer;
755 snprintf(buf, buflen, "Unknown");
757 snprintf(buf, buflen, "_HID=%s _UID=%lu",
758 (adinfo->Valid & ACPI_VALID_HID) ?
759 adinfo->HardwareId.Value : "UNKNOWN",
760 (adinfo->Valid & ACPI_VALID_UID) ?
761 strtoul(adinfo->UniqueId.Value, &end, 10) : 0);
770 * Handle per-device ivars
773 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
775 struct acpi_device *ad;
777 if ((ad = device_get_ivars(child)) == NULL) {
778 printf("device has no ivars\n");
782 /* ACPI and ISA compatibility ivars */
784 case ACPI_IVAR_HANDLE:
785 *(ACPI_HANDLE *)result = ad->ad_handle;
787 case ACPI_IVAR_MAGIC:
788 *(int *)result = ad->ad_magic;
790 case ACPI_IVAR_PRIVATE:
791 *(void **)result = ad->ad_private;
793 case ISA_IVAR_VENDORID:
794 case ISA_IVAR_SERIAL:
795 case ISA_IVAR_COMPATID:
798 case ISA_IVAR_LOGICALID:
799 *(int *)result = acpi_isa_get_logicalid(child);
809 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
811 struct acpi_device *ad;
813 if ((ad = device_get_ivars(child)) == NULL) {
814 printf("device has no ivars\n");
819 case ACPI_IVAR_HANDLE:
820 ad->ad_handle = (ACPI_HANDLE)value;
822 case ACPI_IVAR_MAGIC:
823 ad->ad_magic = (int)value;
825 case ACPI_IVAR_PRIVATE:
826 ad->ad_private = (void *)value;
829 panic("bad ivar write request (%d)", index);
837 * Handle child resource allocation/removal
840 acpi_set_resource(device_t dev, device_t child, int type, int rid,
841 u_long start, u_long count)
843 struct acpi_device *ad = device_get_ivars(child);
844 struct resource_list *rl = &ad->ad_rl;
846 resource_list_add(rl, type, rid, start, start + count -1, count);
852 acpi_get_resource(device_t dev, device_t child, int type, int rid,
853 u_long *startp, u_long *countp)
855 struct acpi_device *ad = device_get_ivars(child);
856 struct resource_list *rl = &ad->ad_rl;
857 struct resource_list_entry *rle;
859 rle = resource_list_find(rl, type, rid);
864 *startp = rle->start;
866 *countp = rle->count;
871 static struct resource *
872 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
873 u_long start, u_long end, u_long count, u_int flags)
875 struct acpi_device *ad = device_get_ivars(child);
876 struct resource_list *rl = &ad->ad_rl;
878 return (resource_list_alloc(rl, bus, child, type, rid, start, end, count,
883 acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r)
885 struct acpi_device *ad = device_get_ivars(child);
886 struct resource_list *rl = &ad->ad_rl;
888 return (resource_list_release(rl, bus, child, type, rid, r));
891 /* Allocate an IO port or memory resource, given its GAS. */
893 acpi_bus_alloc_gas(device_t dev, int *rid, ACPI_GENERIC_ADDRESS *gas)
897 if (gas == NULL || !ACPI_VALID_ADDRESS(gas->Address) ||
898 gas->RegisterBitWidth < 8)
901 switch (gas->AddressSpaceId) {
902 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
903 type = SYS_RES_MEMORY;
905 case ACPI_ADR_SPACE_SYSTEM_IO:
906 type = SYS_RES_IOPORT;
912 bus_set_resource(dev, type, *rid, gas->Address, gas->RegisterBitWidth / 8);
913 return (bus_alloc_resource_any(dev, type, rid, RF_ACTIVE));
917 * Handle ISA-like devices probing for a PnP ID to match.
919 #define PNP_EISAID(s) \
920 ((((s[0] - '@') & 0x1f) << 2) \
921 | (((s[1] - '@') & 0x18) >> 3) \
922 | (((s[1] - '@') & 0x07) << 13) \
923 | (((s[2] - '@') & 0x1f) << 8) \
924 | (PNP_HEXTONUM(s[4]) << 16) \
925 | (PNP_HEXTONUM(s[3]) << 20) \
926 | (PNP_HEXTONUM(s[6]) << 24) \
927 | (PNP_HEXTONUM(s[5]) << 28))
930 acpi_isa_get_logicalid(device_t dev)
932 ACPI_DEVICE_INFO *devinfo;
939 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
943 buf.Length = ACPI_ALLOCATE_BUFFER;
947 /* Fetch and validate the HID. */
948 if ((h = acpi_get_handle(dev)) == NULL)
950 error = AcpiGetObjectInfo(h, &buf);
951 if (ACPI_FAILURE(error))
953 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
955 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
956 pnpid = PNP_EISAID(devinfo->HardwareId.Value);
959 if (buf.Pointer != NULL)
960 AcpiOsFree(buf.Pointer);
962 return_VALUE (pnpid);
966 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
968 ACPI_DEVICE_INFO *devinfo;
976 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
981 buf.Length = ACPI_ALLOCATE_BUFFER;
985 /* Fetch and validate the CID */
986 if ((h = acpi_get_handle(dev)) == NULL)
988 error = AcpiGetObjectInfo(h, &buf);
989 if (ACPI_FAILURE(error))
991 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
992 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
995 if (devinfo->CompatibilityId.Count < count)
996 count = devinfo->CompatibilityId.Count;
997 for (i = 0; i < count; i++) {
998 if (strncmp(devinfo->CompatibilityId.Id[i].Value, "PNP", 3) != 0)
1000 *pnpid++ = PNP_EISAID(devinfo->CompatibilityId.Id[i].Value);
1005 if (buf.Pointer != NULL)
1006 AcpiOsFree(buf.Pointer);
1008 return_VALUE (valid);
1012 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1014 int result, cid_count, i;
1015 uint32_t lid, cids[8];
1017 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1020 * ISA-style drivers attached to ACPI may persist and
1021 * probe manually if we return ENOENT. We never want
1022 * that to happen, so don't ever return it.
1026 /* Scan the supplied IDs for a match */
1027 lid = acpi_isa_get_logicalid(child);
1028 cid_count = acpi_isa_get_compatid(child, cids, 8);
1029 while (ids && ids->ip_id) {
1030 if (lid == ids->ip_id) {
1034 for (i = 0; i < cid_count; i++) {
1035 if (cids[i] == ids->ip_id) {
1044 return_VALUE (result);
1048 * Scan relevant portions of the ACPI namespace and attach child devices.
1050 * Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and
1051 * \_SB_ scopes, and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec.
1054 acpi_probe_children(device_t bus)
1058 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL};
1061 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1064 /* Create any static children by calling device identify methods. */
1065 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1066 bus_generic_probe(bus);
1069 * Scan the namespace and insert placeholders for all the devices that
1072 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1073 * we want to create nodes for all devices, not just those that are
1074 * currently present. (This assumes that we don't want to create/remove
1075 * devices as they appear, which might be smarter.)
1077 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1078 for (i = 0; scopes[i] != NULL; i++) {
1079 status = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent);
1080 if (ACPI_SUCCESS(status)) {
1081 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, acpi_probe_child,
1087 * Scan all of the child devices we have created and let them probe/attach.
1089 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1090 bus_generic_attach(bus);
1093 * Some of these children may have attached others as part of their attach
1094 * process (eg. the root PCI bus driver), so rescan.
1096 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1097 bus_generic_attach(bus);
1099 /* Attach wake sysctls. */
1100 acpi_wake_sysctl_walk(bus);
1102 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1107 * Evaluate a child device and determine whether we might attach a device to
1111 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1113 ACPI_OBJECT_TYPE type;
1114 device_t child, bus = (device_t)context;
1116 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1118 /* Skip this device if we think we'll have trouble with it. */
1119 if (acpi_avoid(handle)) {
1120 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "not scanning '%s'\n",
1121 acpi_name(handle)));
1122 return_ACPI_STATUS (AE_OK);
1125 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1127 case ACPI_TYPE_DEVICE:
1128 case ACPI_TYPE_PROCESSOR:
1129 case ACPI_TYPE_THERMAL:
1130 case ACPI_TYPE_POWER:
1131 if (acpi_disabled("children"))
1135 * Create a placeholder device for this node. Sort the placeholder
1136 * so that the probe/attach passes will run breadth-first.
1138 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n",
1139 acpi_name(handle)));
1140 child = BUS_ADD_CHILD(bus, bus, level * 10, NULL, -1);
1143 acpi_set_handle(child, handle);
1145 /* Check if the device can generate wake events. */
1146 if (ACPI_SUCCESS(AcpiEvaluateObject(handle, "_PRW", NULL, NULL)))
1147 device_set_flags(child, ACPI_FLAG_WAKE_CAPABLE);
1150 * Check that the device is present. If it's not present,
1151 * leave it disabled (so that we have a device_t attached to
1152 * the handle, but we don't probe it).
1154 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1155 device_disable(child);
1160 * Get the device's resource settings and attach them.
1161 * Note that if the device has _PRS but no _CRS, we need
1162 * to decide when it's appropriate to try to configure the
1163 * device. Ignore the return value here; it's OK for the
1164 * device not to have any resources.
1166 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
1168 /* If we're debugging, probe/attach now rather than later */
1169 ACPI_DEBUG_EXEC(device_probe_and_attach(child));
1174 return_ACPI_STATUS (AE_OK);
1178 acpi_shutdown_pre_sync(void *arg, int howto)
1180 struct acpi_softc *sc = arg;
1185 * Disable all ACPI events before soft off, otherwise the system
1186 * will be turned on again on some laptops.
1188 * XXX this should probably be restricted to masking some events just
1189 * before powering down, since we may still need ACPI during the
1192 if (sc->acpi_disable_on_poweroff)
1197 acpi_shutdown_final(void *arg, int howto)
1203 * If powering off, run the actual shutdown code on each processor.
1204 * It will only perform the shutdown on the BSP. Some chipsets do
1205 * not power off the system correctly if called from an AP.
1207 if ((howto & RB_POWEROFF) != 0) {
1208 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1209 if (ACPI_FAILURE(status)) {
1210 printf("AcpiEnterSleepStatePrep failed - %s\n",
1211 AcpiFormatException(status));
1214 printf("Powering system off using ACPI\n");
1215 acpi_shutdown_poweroff(NULL);
1217 printf("Shutting down ACPI\n");
1223 * Since this function may be called with locks held or in an unknown
1224 * context, it cannot allocate memory, acquire locks, sleep, etc.
1227 acpi_shutdown_poweroff(void *arg)
1233 /* Only attempt to power off if this is the BSP (cpuid 0). */
1234 if (mdcpu->mi.gd_cpuid != 0)
1237 ACPI_DISABLE_IRQS();
1238 status = AcpiEnterSleepState(ACPI_STATE_S5);
1239 if (ACPI_FAILURE(status)) {
1240 printf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1243 printf("ACPI power-off failed - timeout\n");
1248 acpi_enable_fixed_events(struct acpi_softc *sc)
1250 static int first_time = 1;
1254 /* Enable and clear fixed events and install handlers. */
1255 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->PwrButton == 0) {
1256 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1257 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1258 acpi_event_power_button_sleep, sc);
1260 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1262 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->SleepButton == 0) {
1263 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1264 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1265 acpi_event_sleep_button_sleep, sc);
1267 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1274 * Returns true if the device is actually present and should
1275 * be attached to. This requires the present, enabled, UI-visible
1276 * and diagnostics-passed bits to be set.
1279 acpi_DeviceIsPresent(device_t dev)
1281 ACPI_DEVICE_INFO *devinfo;
1290 if ((h = acpi_get_handle(dev)) == NULL)
1293 buf.Length = ACPI_ALLOCATE_BUFFER;
1294 error = AcpiGetObjectInfo(h, &buf);
1295 if (ACPI_FAILURE(error))
1297 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1299 /* If no _STA method, must be present */
1300 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1303 /* Return true for 'present' and 'functioning' */
1304 if ((devinfo->CurrentStatus & 0x9) == 0x9)
1307 AcpiOsFree(buf.Pointer);
1312 * Returns true if the battery is actually present and inserted.
1315 acpi_BatteryIsPresent(device_t dev)
1317 ACPI_DEVICE_INFO *devinfo;
1326 if ((h = acpi_get_handle(dev)) == NULL)
1329 buf.Length = ACPI_ALLOCATE_BUFFER;
1330 error = AcpiGetObjectInfo(h, &buf);
1331 if (ACPI_FAILURE(error))
1333 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1335 /* If no _STA method, must be present */
1336 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1339 /* Return true for 'present' and 'functioning' */
1340 if ((devinfo->CurrentStatus & 0x19) == 0x19)
1343 AcpiOsFree(buf.Pointer);
1348 * Match a HID string against a device
1351 acpi_MatchHid(device_t dev, char *hid)
1353 ACPI_DEVICE_INFO *devinfo;
1364 if ((h = acpi_get_handle(dev)) == NULL)
1367 buf.Length = ACPI_ALLOCATE_BUFFER;
1368 error = AcpiGetObjectInfo(h, &buf);
1369 if (ACPI_FAILURE(error))
1371 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1373 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
1374 strcmp(hid, devinfo->HardwareId.Value) == 0)
1376 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
1377 for (i = 0; i < devinfo->CompatibilityId.Count; i++) {
1378 if (strcmp(hid, devinfo->CompatibilityId.Id[i].Value) == 0) {
1385 AcpiOsFree(buf.Pointer);
1390 * Return the handle of a named object within our scope, ie. that of (parent)
1391 * or one if its parents.
1394 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1401 /* Walk back up the tree to the root */
1403 status = AcpiGetHandle(parent, path, &r);
1404 if (ACPI_SUCCESS(status)) {
1408 if (status != AE_NOT_FOUND)
1410 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1411 return (AE_NOT_FOUND);
1416 /* Find the difference between two PM tick counts. */
1418 acpi_TimerDelta(uint32_t end, uint32_t start)
1423 delta = end - start;
1424 else if (AcpiGbl_FADT->TmrValExt == 0)
1425 delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
1427 delta = ((0xFFFFFFFF - start) + end + 1);
1432 * Allocate a buffer with a preset data size.
1435 acpi_AllocBuffer(int size)
1439 buf = kmalloc(size + sizeof(*buf), M_ACPIDEV, M_INTWAIT);
1441 buf->Pointer = (void *)(buf + 1);
1446 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
1449 ACPI_OBJECT_LIST args;
1453 arg1.Type = ACPI_TYPE_INTEGER;
1454 arg1.Integer.Value = number;
1456 args.Pointer = &arg1;
1458 return (AcpiEvaluateObject(handle, path, &args, NULL));
1462 * Evaluate a path that should return an integer.
1465 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
1474 handle = ACPI_ROOT_OBJECT;
1477 * Assume that what we've been pointed at is an Integer object, or
1478 * a method that will return an Integer.
1480 buf.Pointer = ¶m;
1481 buf.Length = sizeof(param);
1482 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1483 if (ACPI_SUCCESS(status)) {
1484 if (param.Type == ACPI_TYPE_INTEGER)
1485 *number = param.Integer.Value;
1491 * In some applications, a method that's expected to return an Integer
1492 * may instead return a Buffer (probably to simplify some internal
1493 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1494 * convert it into an Integer as best we can.
1498 if (status == AE_BUFFER_OVERFLOW) {
1499 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
1500 status = AE_NO_MEMORY;
1502 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1503 if (ACPI_SUCCESS(status))
1504 status = acpi_ConvertBufferToInteger(&buf, number);
1505 AcpiOsFree(buf.Pointer);
1512 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
1518 p = (ACPI_OBJECT *)bufp->Pointer;
1519 if (p->Type == ACPI_TYPE_INTEGER) {
1520 *number = p->Integer.Value;
1523 if (p->Type != ACPI_TYPE_BUFFER)
1525 if (p->Buffer.Length > sizeof(int))
1526 return (AE_BAD_DATA);
1529 val = p->Buffer.Pointer;
1530 for (i = 0; i < p->Buffer.Length; i++)
1531 *number += val[i] << (i * 8);
1536 * Iterate over the elements of an a package object, calling the supplied
1537 * function for each element.
1539 * XXX possible enhancement might be to abort traversal on error.
1542 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
1543 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
1548 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
1549 return (AE_BAD_PARAMETER);
1551 /* Iterate over components */
1553 comp = pkg->Package.Elements;
1554 for (; i < pkg->Package.Count; i++, comp++)
1561 * Find the (index)th resource object in a set.
1564 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
1569 rp = (ACPI_RESOURCE *)buf->Pointer;
1573 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
1574 return (AE_BAD_PARAMETER);
1576 /* Check for terminator */
1577 if (rp->Id == ACPI_RSTYPE_END_TAG || rp->Length == 0)
1578 return (AE_NOT_FOUND);
1579 rp = ACPI_NEXT_RESOURCE(rp);
1588 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
1590 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
1591 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
1592 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
1595 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
1598 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
1603 /* Initialise the buffer if necessary. */
1604 if (buf->Pointer == NULL) {
1605 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
1606 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
1607 return (AE_NO_MEMORY);
1608 rp = (ACPI_RESOURCE *)buf->Pointer;
1609 rp->Id = ACPI_RSTYPE_END_TAG;
1616 * Scan the current buffer looking for the terminator.
1617 * This will either find the terminator or hit the end
1618 * of the buffer and return an error.
1620 rp = (ACPI_RESOURCE *)buf->Pointer;
1622 /* Range check, don't go outside the buffer */
1623 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
1624 return (AE_BAD_PARAMETER);
1625 if (rp->Id == ACPI_RSTYPE_END_TAG || rp->Length == 0)
1627 rp = ACPI_NEXT_RESOURCE(rp);
1631 * Check the size of the buffer and expand if required.
1634 * size of existing resources before terminator +
1635 * size of new resource and header +
1636 * size of terminator.
1638 * Note that this loop should really only run once, unless
1639 * for some reason we are stuffing a *really* huge resource.
1641 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
1642 res->Length + ACPI_RESOURCE_LENGTH_NO_DATA +
1643 ACPI_RESOURCE_LENGTH) >= buf->Length) {
1644 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
1645 return (AE_NO_MEMORY);
1646 bcopy(buf->Pointer, newp, buf->Length);
1647 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
1648 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
1649 AcpiOsFree(buf->Pointer);
1650 buf->Pointer = newp;
1651 buf->Length += buf->Length;
1654 /* Insert the new resource. */
1655 bcopy(res, rp, res->Length + ACPI_RESOURCE_LENGTH_NO_DATA);
1657 /* And add the terminator. */
1658 rp = ACPI_NEXT_RESOURCE(rp);
1659 rp->Id = ACPI_RSTYPE_END_TAG;
1666 * Set interrupt model.
1669 acpi_SetIntrModel(int model)
1671 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
1674 #define ACPI_MINIMUM_AWAKETIME 5
1677 acpi_sleep_enable(void *arg)
1679 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
1683 * Set the system sleep state
1685 * Currently we support S1-S5 but S4 is only S4BIOS
1688 acpi_SetSleepState(struct acpi_softc *sc, int state)
1690 ACPI_STATUS status = AE_OK;
1694 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
1697 /* Avoid reentry if already attempting to suspend. */
1698 if (sc->acpi_sstate != ACPI_STATE_S0)
1699 return_ACPI_STATUS (AE_BAD_PARAMETER);
1701 /* We recently woke up so don't suspend again for a while. */
1702 if (sc->acpi_sleep_disabled)
1703 return_ACPI_STATUS (AE_OK);
1710 status = AcpiGetSleepTypeData((UINT8)state, &TypeA, &TypeB);
1711 if (status == AE_NOT_FOUND) {
1712 device_printf(sc->acpi_dev,
1713 "Sleep state S%d not supported by BIOS\n", state);
1715 } else if (ACPI_FAILURE(status)) {
1716 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
1717 AcpiFormatException(status));
1721 sc->acpi_sstate = state;
1722 sc->acpi_sleep_disabled = 1;
1724 /* Disable all wake GPEs not appropriate for this state. */
1725 acpi_wake_limit_walk(state);
1727 /* Inform all devices that we are going to sleep. */
1728 if (DEVICE_SUSPEND(root_bus) != 0) {
1730 * Re-wake the system.
1732 * XXX note that a better two-pass approach with a 'veto' pass
1733 * followed by a "real thing" pass would be better, but the
1734 * current bus interface does not provide for this.
1736 DEVICE_RESUME(root_bus);
1737 return_ACPI_STATUS (AE_ERROR);
1740 status = AcpiEnterSleepStatePrep(state);
1741 if (ACPI_FAILURE(status)) {
1742 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
1743 AcpiFormatException(status));
1747 if (sc->acpi_sleep_delay > 0)
1748 DELAY(sc->acpi_sleep_delay * 1000000);
1750 if (state != ACPI_STATE_S1) {
1751 acpi_sleep_machdep(sc, state);
1753 /* AcpiEnterSleepState() may be incomplete, unlock if locked. */
1754 if (AcpiGbl_MutexInfo[ACPI_MTX_HARDWARE].OwnerId !=
1755 ACPI_MUTEX_NOT_ACQUIRED) {
1757 AcpiUtReleaseMutex(ACPI_MTX_HARDWARE);
1760 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
1761 if (state == ACPI_STATE_S4)
1764 status = AcpiEnterSleepState((UINT8)state);
1765 if (ACPI_FAILURE(status)) {
1766 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
1767 AcpiFormatException(status));
1771 AcpiLeaveSleepState((UINT8)state);
1772 DEVICE_RESUME(root_bus);
1773 sc->acpi_sstate = ACPI_STATE_S0;
1774 acpi_enable_fixed_events(sc);
1778 * Shut down cleanly and power off. This will call us back through the
1779 * shutdown handlers.
1781 shutdown_nice(RB_POWEROFF);
1785 status = AE_BAD_PARAMETER;
1789 /* Disable a second sleep request for a short period */
1790 if (sc->acpi_sleep_disabled)
1791 callout_reset(&sc->acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME,
1792 acpi_sleep_enable, sc);
1794 return_ACPI_STATUS (status);
1797 /* Initialize a device's wake GPE. */
1799 acpi_wake_init(device_t dev, int type)
1801 struct acpi_prw_data prw;
1803 /* Check that the device can wake the system. */
1804 if ((device_get_flags(dev) & ACPI_FLAG_WAKE_CAPABLE) == 0)
1807 /* Evaluate _PRW to find the GPE. */
1808 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
1811 /* Set the requested type for the GPE (runtime, wake, or both). */
1812 if (ACPI_FAILURE(AcpiSetGpeType(prw.gpe_handle, prw.gpe_bit, type))) {
1813 device_printf(dev, "set GPE type failed\n");
1820 /* Enable or disable the device's wake GPE. */
1822 acpi_wake_set_enable(device_t dev, int enable)
1824 struct acpi_prw_data prw;
1829 /* Make sure the device supports waking the system. */
1830 flags = device_get_flags(dev);
1831 handle = acpi_get_handle(dev);
1832 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
1835 /* Evaluate _PRW to find the GPE. */
1836 if (acpi_parse_prw(handle, &prw) != 0)
1840 status = AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1841 if (ACPI_FAILURE(status)) {
1842 device_printf(dev, "enable wake failed\n");
1845 device_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
1847 status = AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1848 if (ACPI_FAILURE(status)) {
1849 device_printf(dev, "disable wake failed\n");
1852 device_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
1858 /* Configure a device's GPE appropriately for the new sleep state. */
1860 acpi_wake_sleep_prep(device_t dev, int sstate)
1862 struct acpi_prw_data prw;
1866 /* Check that this is an ACPI device and get its GPE. */
1867 flags = device_get_flags(dev);
1868 handle = acpi_get_handle(dev);
1869 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
1872 /* Evaluate _PRW to find the GPE. */
1873 if (acpi_parse_prw(handle, &prw) != 0)
1877 * TBD: All Power Resources referenced by elements 2 through N
1878 * of the _PRW object are put into the ON state.
1882 * If the user requested that this device wake the system and the next
1883 * sleep state is valid for this GPE, enable it and the device's wake
1884 * capability. The sleep state must be less than (i.e., higher power)
1885 * or equal to the value specified by _PRW. Return early, leaving
1886 * the appropriate power resources enabled.
1888 if ((flags & ACPI_FLAG_WAKE_ENABLED) != 0 &&
1889 sstate <= prw.lowest_wake) {
1891 device_printf(dev, "wake_prep enabled gpe %#x for state %d\n",
1892 prw.gpe_bit, sstate);
1893 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1894 acpi_SetInteger(handle, "_PSW", 1);
1899 * If the device wake was disabled or this sleep state is too low for
1900 * this device, disable its wake capability and GPE.
1902 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1903 acpi_SetInteger(handle, "_PSW", 0);
1905 device_printf(dev, "wake_prep disabled gpe %#x for state %d\n",
1906 prw.gpe_bit, sstate);
1909 * TBD: All Power Resources referenced by elements 2 through N
1910 * of the _PRW object are put into the OFF state.
1916 /* Re-enable GPEs after wake. */
1918 acpi_wake_run_prep(device_t dev)
1920 struct acpi_prw_data prw;
1924 /* Check that this is an ACPI device and get its GPE. */
1925 flags = device_get_flags(dev);
1926 handle = acpi_get_handle(dev);
1927 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
1930 /* Evaluate _PRW to find the GPE. */
1931 if (acpi_parse_prw(handle, &prw) != 0)
1935 * TBD: Be sure all Power Resources referenced by elements 2 through N
1936 * of the _PRW object are in the ON state.
1939 /* Disable wake capability and if the user requested, enable the GPE. */
1940 acpi_SetInteger(handle, "_PSW", 0);
1941 if ((flags & ACPI_FLAG_WAKE_ENABLED) != 0)
1942 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1947 acpi_wake_limit(ACPI_HANDLE h, UINT32 level, void *context, void **status)
1949 struct acpi_prw_data prw;
1952 /* It's ok not to have _PRW if the device can't wake the system. */
1953 if (acpi_parse_prw(h, &prw) != 0)
1956 sstate = (int *)context;
1957 if (*sstate > prw.lowest_wake)
1958 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
1963 /* Walk all system devices, disabling them if necessary for sstate. */
1965 acpi_wake_limit_walk(int sstate)
1967 ACPI_HANDLE sb_handle;
1969 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
1970 AcpiWalkNamespace(ACPI_TYPE_ANY, sb_handle, 100,
1971 acpi_wake_limit, &sstate, NULL);
1975 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
1977 acpi_wake_sysctl_walk(device_t dev)
1979 int error, i, numdevs;
1983 error = device_get_children(dev, &devlist, &numdevs);
1984 if (error != 0 || numdevs == 0)
1986 for (i = 0; i < numdevs; i++) {
1988 if (!device_is_attached(child))
1990 if (device_get_flags(child) & ACPI_FLAG_WAKE_CAPABLE) {
1992 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
1993 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
1994 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
1995 acpi_wake_set_sysctl, "I", "Device set to wake the system");
1996 #endif /* dfly_notyet */
1998 acpi_wake_sysctl_walk(child);
2000 kfree(devlist, M_TEMP);
2006 /* Enable or disable wake from userland. */
2008 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2013 dev = (device_t)arg1;
2014 enable = (device_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
2016 error = sysctl_handle_int(oidp, &enable, 0, req);
2017 if (error != 0 || req->newptr == NULL)
2019 if (enable != 0 && enable != 1)
2022 return (acpi_wake_set_enable(dev, enable));
2024 #endif /* dfly_notyet */
2026 /* Parse a device's _PRW into a structure. */
2028 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2031 ACPI_BUFFER prw_buffer;
2032 ACPI_OBJECT *res, *res2;
2035 if (h == NULL || prw == NULL)
2039 * The _PRW object (7.2.9) is only required for devices that have the
2040 * ability to wake the system from a sleeping state.
2043 prw_buffer.Pointer = NULL;
2044 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2045 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2046 if (ACPI_FAILURE(status))
2048 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2051 if (!ACPI_PKG_VALID(res, 2))
2055 * Element 1 of the _PRW object:
2056 * The lowest power system sleeping state that can be entered while still
2057 * providing wake functionality. The sleeping state being entered must
2058 * be less than (i.e., higher power) or equal to this value.
2060 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2064 * Element 0 of the _PRW object:
2066 switch (res->Package.Elements[0].Type) {
2067 case ACPI_TYPE_INTEGER:
2069 * If the data type of this package element is numeric, then this
2070 * _PRW package element is the bit index in the GPEx_EN, in the
2071 * GPE blocks described in the FADT, of the enable bit that is
2072 * enabled for the wake event.
2074 prw->gpe_handle = NULL;
2075 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2078 case ACPI_TYPE_PACKAGE:
2080 * If the data type of this package element is a package, then this
2081 * _PRW package element is itself a package containing two
2082 * elements. The first is an object reference to the GPE Block
2083 * device that contains the GPE that will be triggered by the wake
2084 * event. The second element is numeric and it contains the bit
2085 * index in the GPEx_EN, in the GPE Block referenced by the
2086 * first element in the package, of the enable bit that is enabled for
2089 * For example, if this field is a package then it is of the form:
2090 * Package() {\_SB.PCI0.ISA.GPE, 2}
2092 res2 = &res->Package.Elements[0];
2093 if (!ACPI_PKG_VALID(res2, 2))
2095 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2096 if (prw->gpe_handle == NULL)
2098 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2106 /* XXX No power resource handling yet. */
2107 prw->power_res = NULL;
2110 if (prw_buffer.Pointer != NULL)
2111 AcpiOsFree(prw_buffer.Pointer);
2116 * Enable/Disable ACPI
2119 acpi_Enable(struct acpi_softc *sc)
2124 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2127 flags = ACPI_NO_ADDRESS_SPACE_INIT | ACPI_NO_HARDWARE_INIT |
2128 ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
2129 if (!sc->acpi_enabled)
2130 status = AcpiEnableSubsystem(flags);
2134 if (status == AE_OK)
2135 sc->acpi_enabled = 1;
2137 return_ACPI_STATUS (status);
2141 acpi_Disable(struct acpi_softc *sc)
2145 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2148 if (sc->acpi_enabled)
2149 status = AcpiDisable();
2153 if (status == AE_OK)
2154 sc->acpi_enabled = 0;
2156 return_ACPI_STATUS (status);
2160 * ACPI Event Handlers
2163 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2166 acpi_system_eventhandler_sleep(void *arg, int state)
2169 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2172 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
2173 acpi_SetSleepState((struct acpi_softc *)arg, state);
2179 acpi_system_eventhandler_wakeup(void *arg, int state)
2182 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2184 /* Well, what to do? :-) */
2193 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2196 acpi_event_power_button_sleep(void *context)
2198 struct acpi_softc *sc = (struct acpi_softc *)context;
2200 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2202 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2204 return_VALUE (ACPI_INTERRUPT_HANDLED);
2208 acpi_event_power_button_wake(void *context)
2210 struct acpi_softc *sc = (struct acpi_softc *)context;
2212 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2214 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2216 return_VALUE (ACPI_INTERRUPT_HANDLED);
2220 acpi_event_sleep_button_sleep(void *context)
2222 struct acpi_softc *sc = (struct acpi_softc *)context;
2224 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2226 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2228 return_VALUE (ACPI_INTERRUPT_HANDLED);
2232 acpi_event_sleep_button_wake(void *context)
2234 struct acpi_softc *sc = (struct acpi_softc *)context;
2236 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2238 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2240 return_VALUE (ACPI_INTERRUPT_HANDLED);
2244 * XXX This is kinda ugly, and should not be here.
2246 struct acpi_staticbuf {
2252 acpi_name(ACPI_HANDLE handle)
2254 static struct acpi_staticbuf buf;
2258 buf.buffer.Length = 512;
2259 buf.buffer.Pointer = &buf.data[0];
2261 if (ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer)))
2262 return (buf.buffer.Pointer);
2264 return ("(unknown path)");
2268 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2269 * parts of the namespace.
2272 acpi_avoid(ACPI_HANDLE handle)
2274 char *cp, *env, *np;
2277 np = acpi_name(handle);
2280 if ((env = kgetenv("debug.acpi.avoid.paths")) == NULL &&
2281 (env = kgetenv("debug.acpi.avoid")) == NULL)
2284 /* Scan the avoid list checking for a match */
2287 while ((*cp != 0) && isspace(*cp))
2292 while ((cp[len] != 0) && !isspace(cp[len]))
2294 if (!strncmp(cp, np, len)) {
2306 * Debugging/bug-avoidance. Disable ACPI subsystem components. Note that
2307 * some components may be disabled by default and can only be enabled
2308 * via acpi_enabled() (debug.acpi.enabled).
2311 acpi_disabled(char *subsys)
2316 if ((env = kgetenv("debug.acpi.disabled")) == NULL)
2318 if (strcmp(env, "all") == 0) {
2323 /* Scan the disable list, checking for a match. */
2326 while (*cp != '\0' && isspace(*cp))
2331 while (cp[len] != '\0' && !isspace(cp[len]))
2333 if (strncmp(cp, subsys, len) == 0) {
2345 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
2346 * components are enabled by default. The ones that are not have to be
2347 * enabled via debug.acpi.enabled.
2350 acpi_enabled(char *subsys)
2355 if ((env = kgetenv("debug.acpi.enabled")) == NULL)
2357 if (strcmp(env, "all") == 0) {
2362 /* Scan the enable list, checking for a match. */
2365 while (*cp != '\0' && isspace(*cp))
2370 while (cp[len] != '\0' && !isspace(cp[len]))
2372 if (strncmp(cp, subsys, len) == 0) {
2384 * Control interface.
2386 * We multiplex ioctls for all participating ACPI devices here. Individual
2387 * drivers wanting to be accessible via /dev/acpi should use the
2388 * register/deregister interface to make their handlers visible.
2390 struct acpi_ioctl_hook
2392 TAILQ_ENTRY(acpi_ioctl_hook) link;
2398 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
2399 static int acpi_ioctl_hooks_initted;
2402 * Register an ioctl handler.
2405 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
2407 struct acpi_ioctl_hook *hp;
2409 hp = kmalloc(sizeof(*hp), M_ACPIDEV, M_INTWAIT);
2413 if (acpi_ioctl_hooks_initted == 0) {
2414 TAILQ_INIT(&acpi_ioctl_hooks);
2415 acpi_ioctl_hooks_initted = 1;
2417 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
2422 * Deregister an ioctl handler.
2425 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
2427 struct acpi_ioctl_hook *hp;
2429 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
2430 if ((hp->cmd == cmd) && (hp->fn == fn))
2434 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
2435 kfree(hp, M_ACPIDEV);
2440 acpiopen(struct dev_open_args *ap)
2446 acpiclose(struct dev_close_args *ap)
2452 acpiioctl(struct dev_ioctl_args *ap)
2454 struct acpi_softc *sc;
2455 struct acpi_ioctl_hook *hp;
2456 int error, xerror, state;
2462 sc = ap->a_head.a_dev->si_drv1;
2465 * Scan the list of registered ioctls, looking for handlers.
2467 if (acpi_ioctl_hooks_initted) {
2468 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
2469 if (hp->cmd == ap->a_cmd) {
2470 xerror = hp->fn(ap->a_cmd, ap->a_data, hp->arg);
2479 * Core ioctls are not permitted for non-writable user.
2480 * Currently, other ioctls just fetch information.
2481 * Not changing system behavior.
2483 if((ap->a_fflag & FWRITE) == 0) {
2488 /* Core system ioctls. */
2489 switch (ap->a_cmd) {
2491 if (ACPI_FAILURE(acpi_Enable(sc)))
2494 case ACPIIO_DISABLE:
2495 if (ACPI_FAILURE(acpi_Disable(sc)))
2498 case ACPIIO_SETSLPSTATE:
2499 if (!sc->acpi_enabled) {
2503 state = *(int *)ap->a_data;
2504 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) {
2505 if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
2523 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2525 char sleep_state[4];
2528 UINT8 state, TypeA, TypeB;
2531 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++) {
2532 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
2533 sprintf(sleep_state, "S%d ", state);
2534 strcat(buf, sleep_state);
2537 error = sysctl_handle_string(oidp, buf, sizeof(buf), req);
2542 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2544 char sleep_state[10];
2546 u_int new_state, old_state;
2548 old_state = *(u_int *)oidp->oid_arg1;
2549 if (old_state > ACPI_S_STATES_MAX + 1) {
2550 strcpy(sleep_state, "unknown");
2552 bzero(sleep_state, sizeof(sleep_state));
2553 strncpy(sleep_state, sleep_state_names[old_state],
2554 sizeof(sleep_state_names[old_state]));
2556 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
2557 if (error == 0 && req->newptr != NULL) {
2558 new_state = ACPI_STATE_S0;
2559 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++) {
2560 if (strncmp(sleep_state, sleep_state_names[new_state],
2561 sizeof(sleep_state)) == 0)
2564 if (new_state <= ACPI_S_STATES_MAX + 1) {
2565 if (new_state != old_state)
2566 *(u_int *)oidp->oid_arg1 = new_state;
2575 /* Inform devctl(4) when we receive a Notify. */
2577 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
2579 char notify_buf[16];
2580 ACPI_BUFFER handle_buf;
2583 if (subsystem == NULL)
2586 handle_buf.Pointer = NULL;
2587 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
2588 status = AcpiNsHandleToPathname(h, &handle_buf);
2589 if (ACPI_FAILURE(status))
2591 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
2593 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
2595 AcpiOsFree(handle_buf.Pointer);
2600 * Support for parsing debug options from the kernel environment.
2602 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
2603 * by specifying the names of the bits in the debug.acpi.layer and
2604 * debug.acpi.level environment variables. Bits may be unset by
2605 * prefixing the bit name with !.
2613 static struct debugtag dbg_layer[] = {
2614 {"ACPI_UTILITIES", ACPI_UTILITIES},
2615 {"ACPI_HARDWARE", ACPI_HARDWARE},
2616 {"ACPI_EVENTS", ACPI_EVENTS},
2617 {"ACPI_TABLES", ACPI_TABLES},
2618 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
2619 {"ACPI_PARSER", ACPI_PARSER},
2620 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
2621 {"ACPI_EXECUTER", ACPI_EXECUTER},
2622 {"ACPI_RESOURCES", ACPI_RESOURCES},
2623 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
2624 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
2625 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
2626 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
2628 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
2629 {"ACPI_BATTERY", ACPI_BATTERY},
2630 {"ACPI_BUS", ACPI_BUS},
2631 {"ACPI_BUTTON", ACPI_BUTTON},
2632 {"ACPI_EC", ACPI_EC},
2633 {"ACPI_FAN", ACPI_FAN},
2634 {"ACPI_POWERRES", ACPI_POWERRES},
2635 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
2636 {"ACPI_THERMAL", ACPI_THERMAL},
2637 {"ACPI_TIMER", ACPI_TIMER},
2638 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
2642 static struct debugtag dbg_level[] = {
2643 {"ACPI_LV_ERROR", ACPI_LV_ERROR},
2644 {"ACPI_LV_WARN", ACPI_LV_WARN},
2645 {"ACPI_LV_INIT", ACPI_LV_INIT},
2646 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
2647 {"ACPI_LV_INFO", ACPI_LV_INFO},
2648 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
2650 /* Trace verbosity level 1 [Standard Trace Level] */
2651 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
2652 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
2653 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
2654 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
2655 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
2656 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
2657 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
2658 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
2659 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
2660 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
2661 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
2662 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
2663 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
2664 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
2665 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
2667 /* Trace verbosity level 2 [Function tracing and memory allocation] */
2668 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
2669 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
2670 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
2671 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
2672 {"ACPI_LV_ALL", ACPI_LV_ALL},
2674 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
2675 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
2676 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
2677 {"ACPI_LV_IO", ACPI_LV_IO},
2678 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
2679 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
2681 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
2682 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
2683 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
2684 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
2685 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
2686 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
2691 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
2703 while (*ep && !isspace(*ep))
2714 for (i = 0; tag[i].name != NULL; i++) {
2715 if (!strncmp(cp, tag[i].name, l)) {
2717 *flag |= tag[i].value;
2719 *flag &= ~tag[i].value;
2727 acpi_set_debugging(void *junk)
2729 char *layer, *level;
2736 layer = kgetenv("debug.acpi.layer");
2737 level = kgetenv("debug.acpi.level");
2738 if (layer == NULL && level == NULL)
2741 printf("ACPI set debug");
2742 if (layer != NULL) {
2743 if (strcmp("NONE", layer) != 0)
2744 printf(" layer '%s'", layer);
2745 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
2748 if (level != NULL) {
2749 if (strcmp("NONE", level) != 0)
2750 printf(" level '%s'", level);
2751 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
2756 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
2760 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
2763 struct debugtag *tag;
2766 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
2768 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
2769 tag = &dbg_layer[0];
2770 dbg = &AcpiDbgLayer;
2772 tag = &dbg_level[0];
2773 dbg = &AcpiDbgLevel;
2776 /* Get old values if this is a get request. */
2778 sbuf_cpy(&sb, "NONE");
2779 } else if (req->newptr == NULL) {
2780 for (; tag->name != NULL; tag++) {
2781 if ((*dbg & tag->value) == tag->value)
2782 sbuf_printf(&sb, "%s ", tag->name);
2788 /* Copy out the old values to the user. */
2789 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
2792 /* If the user is setting a string, parse it. */
2793 if (error == 0 && req->newptr != NULL) {
2795 /* XXX setenv((char *)oidp->oid_arg1, (char *)req->newptr); */
2796 acpi_set_debugging(NULL);
2801 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
2802 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
2803 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
2804 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
2808 acpi_pm_func(u_long cmd, void *arg, ...)
2810 int state, acpi_state;
2812 struct acpi_softc *sc;
2817 case POWER_CMD_SUSPEND:
2818 sc = (struct acpi_softc *)arg;
2825 state = va_arg(ap, int);
2829 case POWER_SLEEP_STATE_STANDBY:
2830 acpi_state = sc->acpi_standby_sx;
2832 case POWER_SLEEP_STATE_SUSPEND:
2833 acpi_state = sc->acpi_suspend_sx;
2835 case POWER_SLEEP_STATE_HIBERNATE:
2836 acpi_state = ACPI_STATE_S4;
2843 acpi_SetSleepState(sc, acpi_state);
2855 acpi_pm_register(void *arg)
2857 if (!cold || resource_disabled("acpi", 0))
2860 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
2863 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);