2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.kfreebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.kfreebsd.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
28 * __FBSDID("$FreeBSD: src/sys/dev/acpica/acpi.c,v 1.243.2.4.4.1 2009/04/15 03:14:26 kensmith Exp $");
31 #include <sys/cdefs.h>
34 #include <sys/param.h>
35 #include <sys/kernel.h>
37 #include <sys/fcntl.h>
38 #include <sys/malloc.h>
39 #include <sys/module.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/device.h>
50 #include <sys/spinlock.h>
51 #include <sys/spinlock2.h>
54 #include <bus/isa/isavar.h>
55 #include <bus/isa/pnpvar.h>
58 #include <dev/acpica5/acpivar.h>
59 #include <dev/acpica5/acpiio.h>
65 #include <bus/pci/pci_cfgreg.h>
66 #include <bus/pci/pcivar.h>
67 #include <bus/pci/pci_private.h>
69 #include <vm/vm_param.h>
71 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
73 #define GIANT_REQUIRED
76 /* Hooks for the ACPI CA debugging infrastructure */
77 #define _COMPONENT ACPI_BUS
78 ACPI_MODULE_NAME("ACPI")
80 static d_open_t acpiopen;
81 static d_close_t acpiclose;
82 static d_ioctl_t acpiioctl;
84 #define CDEV_MAJOR 152
85 static struct dev_ops acpi_ops = {
86 { "acpi", CDEV_MAJOR, 0 },
92 /* Global mutex for locking access to the ACPI subsystem. */
93 struct lock acpi_lock;
94 /* Bitmap of device quirks. */
97 static int acpi_modevent(struct module *mod, int event, void *junk);
98 static void acpi_identify(driver_t *driver, device_t parent);
99 static int acpi_probe(device_t dev);
100 static int acpi_attach(device_t dev);
101 static int acpi_suspend(device_t dev);
102 static int acpi_resume(device_t dev);
103 static int acpi_shutdown(device_t dev);
104 static device_t acpi_add_child(device_t bus, device_t parent, int order, const char *name,
106 static int acpi_print_child(device_t bus, device_t child);
107 static void acpi_probe_nomatch(device_t bus, device_t child);
108 static void acpi_driver_added(device_t dev, driver_t *driver);
109 static int acpi_read_ivar(device_t dev, device_t child, int index,
111 static int acpi_write_ivar(device_t dev, device_t child, int index,
113 static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
114 static int acpi_sysres_alloc(device_t dev);
115 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
116 int type, int *rid, u_long start, u_long end,
117 u_long count, u_int flags);
118 static int acpi_release_resource(device_t bus, device_t child, int type,
119 int rid, struct resource *r);
120 static void acpi_delete_resource(device_t bus, device_t child, int type,
122 static uint32_t acpi_isa_get_logicalid(device_t dev);
123 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
124 static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
125 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
126 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
128 static int acpi_device_pwr_for_sleep(device_t bus, device_t dev,
130 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
131 void *context, void **retval);
132 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
133 int max_depth, acpi_scan_cb_t user_fn, void *arg);
134 static int acpi_set_powerstate_method(device_t bus, device_t child,
136 static int acpi_isa_pnp_probe(device_t bus, device_t child,
137 struct isa_pnp_id *ids);
138 static void acpi_probe_children(device_t bus);
139 static void acpi_probe_order(ACPI_HANDLE handle, int *order);
140 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
141 void *context, void **status);
142 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
143 static void acpi_shutdown_final(void *arg, int howto);
144 static void acpi_enable_fixed_events(struct acpi_softc *sc);
145 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
146 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
147 static int acpi_wake_prep_walk(int sstate);
148 static int acpi_wake_sysctl_walk(device_t dev);
150 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
152 static void acpi_system_eventhandler_sleep(void *arg, int state);
153 static void acpi_system_eventhandler_wakeup(void *arg, int state);
154 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
155 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
156 static int acpi_pm_func(u_long cmd, void *arg, ...);
157 static int acpi_child_location_str_method(device_t acdev, device_t child,
158 char *buf, size_t buflen);
159 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
160 char *buf, size_t buflen);
161 static void acpi_enable_pcie(void);
163 static device_method_t acpi_methods[] = {
164 /* Device interface */
165 DEVMETHOD(device_identify, acpi_identify),
166 DEVMETHOD(device_probe, acpi_probe),
167 DEVMETHOD(device_attach, acpi_attach),
168 DEVMETHOD(device_shutdown, acpi_shutdown),
169 DEVMETHOD(device_detach, bus_generic_detach),
170 DEVMETHOD(device_suspend, acpi_suspend),
171 DEVMETHOD(device_resume, acpi_resume),
174 DEVMETHOD(bus_add_child, acpi_add_child),
175 DEVMETHOD(bus_print_child, acpi_print_child),
176 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
177 DEVMETHOD(bus_driver_added, acpi_driver_added),
178 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
179 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
180 DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
181 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
182 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
183 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
184 DEVMETHOD(bus_release_resource, acpi_release_resource),
185 DEVMETHOD(bus_delete_resource, acpi_delete_resource),
186 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
187 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
188 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
189 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
190 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
191 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
194 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
195 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
196 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
197 DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
200 DEVMETHOD(pci_set_powerstate, acpi_set_powerstate_method),
203 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
208 static driver_t acpi_driver = {
211 sizeof(struct acpi_softc),
214 static devclass_t acpi_devclass;
215 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
216 MODULE_VERSION(acpi, 1);
218 ACPI_SERIAL_DECL(acpi, "ACPI serializer")
220 /* Local pools for managing system resources for ACPI child devices. */
221 static struct rman acpi_rman_io, acpi_rman_mem;
223 #define ACPI_MINIMUM_AWAKETIME 5
225 static const char* sleep_state_names[] = {
226 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
228 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
229 static char acpi_ca_version[12];
230 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
231 acpi_ca_version, 0, "Version of Intel ACPI-CA");
234 * Allow override of whether methods execute in parallel or not.
235 * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
236 * errors for AML that really can't handle parallel method execution.
237 * It is off by default since this breaks recursive methods and
238 * some IBMs use such code.
240 static int acpi_serialize_methods;
241 TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
243 /* Power devices off and on in suspend and resume. XXX Remove once tested. */
244 static int acpi_do_powerstate = 1;
245 TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate);
246 SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW,
247 &acpi_do_powerstate, 1, "Turn off devices when suspending.");
249 /* Allow users to override quirks. */
250 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
252 static int acpi_susp_bounce;
253 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
254 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
257 * ACPI can only be loaded as a module by the loader; activating it after
258 * system bootstrap time is not useful, and can be fatal to the system.
259 * It also cannot be unloaded, since the entire system bus heirarchy hangs
263 acpi_modevent(struct module *mod, int event, void *junk)
268 kprintf("The ACPI driver cannot be loaded after boot.\n");
273 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
283 * Perform early initialization.
288 static int started = 0;
292 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
294 /* Only run the startup code once. The MADT driver also calls this. */
296 return_VALUE (AE_OK);
300 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
301 * if more tables exist.
303 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
304 kprintf("ACPI: Table initialisation failed: %s\n",
305 AcpiFormatException(status));
306 return_VALUE (status);
309 /* Set up any quirks we have for this system. */
311 if (acpi_quirks == ACPI_Q_OK)
312 acpi_table_quirks(&acpi_quirks);
315 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
316 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
317 acpi_quirks &= ~ACPI_Q_BROKEN;
318 if (acpi_quirks & ACPI_Q_BROKEN) {
319 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
323 return_VALUE (status);
327 * Detect ACPI, perform early initialisation
330 acpi_identify(driver_t *driver, device_t parent)
334 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
339 /* Check that we haven't been disabled with a hint. */
340 if (resource_disabled("acpi", 0))
343 /* Make sure we're not being doubly invoked. */
344 if (device_find_child(parent, "acpi", 0) != NULL)
347 ksnprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
349 /* Initialize root tables. */
350 if (ACPI_FAILURE(acpi_Startup())) {
351 kprintf("ACPI: Try disabling either ACPI or apic support.\n");
355 /* Attach the actual ACPI device. */
356 if ((child = BUS_ADD_CHILD(parent, parent, 10, "acpi", 0)) == NULL) {
357 device_printf(parent, "device_identify failed\n");
363 * Fetch some descriptive data from ACPI to put in our attach message.
366 acpi_probe(device_t dev)
368 ACPI_TABLE_RSDP *rsdp;
369 ACPI_TABLE_HEADER *rsdt;
370 ACPI_PHYSICAL_ADDRESS paddr;
371 char buf[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
374 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
376 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
377 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
378 device_printf(dev, "probe failed, other PM system enabled.\n");
379 return_VALUE (ENXIO);
382 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
383 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
384 return_VALUE (ENXIO);
385 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
386 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
388 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
389 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
391 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
392 return_VALUE (ENXIO);
393 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
394 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
397 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
400 device_set_desc_copy(dev, sbuf_data(&sb));
402 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
408 acpi_attach(device_t dev)
410 struct acpi_softc *sc;
411 ACPI_TABLE_FACS *facs;
418 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
420 sc = device_get_softc(dev);
422 callout_init(&sc->susp_force_to);
424 if ((error = acpi_task_thread_init())) {
425 device_printf(dev, "Could not start task thread.\n");
431 /* Initialize resource manager. */
432 acpi_rman_io.rm_type = RMAN_ARRAY;
433 acpi_rman_io.rm_start = 0;
434 acpi_rman_io.rm_end = 0xffff;
435 acpi_rman_io.rm_descr = "ACPI I/O ports";
436 if (rman_init(&acpi_rman_io) != 0)
437 panic("acpi rman_init IO ports failed");
438 acpi_rman_mem.rm_type = RMAN_ARRAY;
439 acpi_rman_mem.rm_start = 0;
440 acpi_rman_mem.rm_end = ~0ul;
441 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
442 if (rman_init(&acpi_rman_mem) != 0)
443 panic("acpi rman_init memory failed");
445 /* Initialise the ACPI mutex */
446 ACPI_LOCK_INIT(acpi, "acpi");
447 ACPI_SERIAL_INIT(acpi);
450 * Set the globals from our tunables. This is needed because ACPI-CA
451 * uses UINT8 for some values and we have no tunable_byte.
453 AcpiGbl_AllMethodsSerialized = acpi_serialize_methods;
454 AcpiGbl_EnableInterpreterSlack = TRUE;
456 /* Start up the ACPI CA subsystem. */
457 status = AcpiInitializeSubsystem();
458 if (ACPI_FAILURE(status)) {
459 device_printf(dev, "Could not initialize Subsystem: %s\n",
460 AcpiFormatException(status));
464 /* Load ACPI name space. */
465 status = AcpiLoadTables();
466 if (ACPI_FAILURE(status)) {
467 device_printf(dev, "Could not load Namespace: %s\n",
468 AcpiFormatException(status));
472 /* Handle MCFG table if present. */
475 /* Install the default address space handlers. */
476 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
477 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
478 if (ACPI_FAILURE(status)) {
479 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
480 AcpiFormatException(status));
483 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
484 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
485 if (ACPI_FAILURE(status)) {
486 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
487 AcpiFormatException(status));
490 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
491 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
492 if (ACPI_FAILURE(status)) {
493 device_printf(dev, "could not initialise PciConfig handler: %s\n",
494 AcpiFormatException(status));
499 * Note that some systems (specifically, those with namespace evaluation
500 * issues that require the avoidance of parts of the namespace) must
501 * avoid running _INI and _STA on everything, as well as dodging the final
504 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
506 * XXX We should arrange for the object init pass after we have attached
507 * all our child devices, but on many systems it works here.
510 if (ktestenv("debug.acpi.avoid"))
511 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
513 /* Bring the hardware and basic handlers online. */
514 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
515 device_printf(dev, "Could not enable ACPI: %s\n",
516 AcpiFormatException(status));
521 * Call the ECDT probe function to provide EC functionality before
522 * the namespace has been evaluated.
524 * XXX This happens before the sysresource devices have been probed and
525 * attached so its resources come from nexus0. In practice, this isn't
526 * a problem but should be addressed eventually.
528 acpi_ec_ecdt_probe(dev);
530 /* Bring device objects and regions online. */
531 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
532 device_printf(dev, "Could not initialize ACPI objects: %s\n",
533 AcpiFormatException(status));
538 * Setup our sysctl tree.
540 * XXX: This doesn't check to make sure that none of these fail.
542 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
543 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
544 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
545 device_get_name(dev), CTLFLAG_RD, 0, "");
546 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
547 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
548 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
549 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
550 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
551 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
552 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
553 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
554 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
555 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
556 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
557 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
558 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
559 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
560 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
561 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
562 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
563 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
564 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
565 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
567 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
568 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
569 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
570 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
571 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
572 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
573 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
574 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
575 OID_AUTO, "handle_reboot", CTLFLAG_RW,
576 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
579 * Default to 1 second before sleeping to give some machines time to
582 sc->acpi_sleep_delay = 1;
584 sc->acpi_verbose = 1;
585 if ((env = kgetenv("hw.acpi.verbose")) != NULL) {
586 if (strcmp(env, "0") != 0)
587 sc->acpi_verbose = 1;
591 /* Only enable S4BIOS by default if the FACS says it is available. */
592 status = AcpiGetTable(ACPI_SIG_FACS, 0, (ACPI_TABLE_HEADER **)&facs);
593 if (ACPI_FAILURE(status)) {
594 device_printf(dev, "couldn't get FACS: %s\n",
595 AcpiFormatException(status));
599 if (facs->Flags & ACPI_FACS_S4_BIOS_PRESENT)
603 * Dispatch the default sleep state to devices. The lid switch is set
604 * to NONE by default to avoid surprising users.
606 sc->acpi_power_button_sx = ACPI_STATE_S5;
607 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
608 sc->acpi_standby_sx = ACPI_STATE_S1;
609 sc->acpi_suspend_sx = ACPI_STATE_S3;
611 /* Pick the first valid sleep state for the sleep button default. */
612 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
613 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
614 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
615 sc->acpi_sleep_button_sx = state;
619 acpi_enable_fixed_events(sc);
622 * Scan the namespace and attach/initialise children.
625 /* Register our shutdown handler. */
626 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
630 * Register our acpi event handlers.
631 * XXX should be configurable eg. via userland policy manager.
633 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
634 sc, ACPI_EVENT_PRI_LAST);
635 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
636 sc, ACPI_EVENT_PRI_LAST);
638 /* Flag our initial states. */
639 sc->acpi_enabled = 1;
640 sc->acpi_sstate = ACPI_STATE_S0;
641 sc->acpi_sleep_disabled = 0;
642 /* Create the control device */
643 sc->acpi_dev_t = make_dev(&acpi_ops, 0, UID_ROOT, GID_WHEEL, 0644,
645 sc->acpi_dev_t->si_drv1 = sc;
647 if ((error = acpi_machdep_init(dev)))
650 /* Register ACPI again to pass the correct argument of pm_func. */
651 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
653 if (!acpi_disabled("bus"))
654 acpi_probe_children(dev);
659 cputimer_intr_pmfixup();
660 return_VALUE (error);
664 acpi_suspend(device_t dev)
666 device_t child, *devlist;
667 int error, i, numdevs, pstate;
671 /* First give child devices a chance to suspend. */
672 error = bus_generic_suspend(dev);
677 * Now, set them into the appropriate power state, usually D3. If the
678 * device has an _SxD method for the next sleep state, use that power
681 device_get_children(dev, &devlist, &numdevs);
682 for (i = 0; i < numdevs; i++) {
683 /* If the device is not attached, we've powered it down elsewhere. */
685 if (!device_is_attached(child))
689 * Default to D3 for all sleep states. The _SxD method is optional
690 * so set the powerstate even if it's absent.
692 pstate = PCI_POWERSTATE_D3;
693 error = acpi_device_pwr_for_sleep(device_get_parent(child),
695 if ((error == 0 || error == ESRCH) && acpi_do_powerstate)
696 pci_set_powerstate(child, pstate);
698 kfree(devlist, M_TEMP);
705 acpi_resume(device_t dev)
709 device_t child, *devlist;
714 * Put all devices in D0 before resuming them. Call _S0D on each one
715 * since some systems expect this.
717 device_get_children(dev, &devlist, &numdevs);
718 for (i = 0; i < numdevs; i++) {
720 handle = acpi_get_handle(child);
722 AcpiEvaluateObject(handle, "_S0D", NULL, NULL);
723 if (device_is_attached(child) && acpi_do_powerstate)
724 pci_set_powerstate(child, PCI_POWERSTATE_D0);
726 kfree(devlist, M_TEMP);
728 return (bus_generic_resume(dev));
732 acpi_shutdown(device_t dev)
737 /* Allow children to shutdown first. */
738 bus_generic_shutdown(dev);
741 * Enable any GPEs that are able to power-on the system (i.e., RTC).
742 * Also, disable any that are not valid for this state (most).
744 acpi_wake_prep_walk(ACPI_STATE_S5);
750 * Handle a new device being added
753 acpi_add_child(device_t bus, device_t parent, int order, const char *name, int unit)
755 struct acpi_device *ad;
758 if ((ad = kmalloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
761 resource_list_init(&ad->ad_rl);
762 child = device_add_child_ordered(parent, order, name, unit);
764 device_set_ivars(child, ad);
766 kfree(ad, M_ACPIDEV);
771 acpi_print_child(device_t bus, device_t child)
773 struct acpi_device *adev = device_get_ivars(child);
774 struct resource_list *rl = &adev->ad_rl;
777 retval += bus_print_child_header(bus, child);
778 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
779 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
780 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
781 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
782 if (device_get_flags(child))
783 retval += kprintf(" flags %#x", device_get_flags(child));
784 retval += bus_print_child_footer(bus, child);
790 * If this device is an ACPI child but no one claimed it, attempt
791 * to power it off. We'll power it back up when a driver is added.
793 * XXX Disabled for now since many necessary devices (like fdc and
794 * ATA) don't claim the devices we created for them but still expect
795 * them to be powered up.
798 acpi_probe_nomatch(device_t bus, device_t child)
801 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
805 * If a new driver has a chance to probe a child, first power it up.
807 * XXX Disabled for now (see acpi_probe_nomatch for details).
810 acpi_driver_added(device_t dev, driver_t *driver)
812 device_t child, *devlist;
815 DEVICE_IDENTIFY(driver, dev);
816 device_get_children(dev, &devlist, &numdevs);
817 for (i = 0; i < numdevs; i++) {
819 if (device_get_state(child) == DS_NOTPRESENT) {
820 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
821 if (device_probe_and_attach(child) != 0)
822 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
825 kfree(devlist, M_TEMP);
828 /* Location hint for devctl(8) */
830 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
833 struct acpi_device *dinfo = device_get_ivars(child);
835 if (dinfo->ad_handle)
836 ksnprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
838 ksnprintf(buf, buflen, "unknown");
842 /* PnP information for devctl(8) */
844 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
847 ACPI_BUFFER adbuf = {ACPI_ALLOCATE_BUFFER, NULL};
848 ACPI_DEVICE_INFO *adinfo;
849 struct acpi_device *dinfo = device_get_ivars(child);
853 error = AcpiGetObjectInfo(dinfo->ad_handle, &adbuf);
854 adinfo = (ACPI_DEVICE_INFO *) adbuf.Pointer;
856 ksnprintf(buf, buflen, "unknown");
858 ksnprintf(buf, buflen, "_HID=%s _UID=%lu",
859 (adinfo->Valid & ACPI_VALID_HID) ?
860 adinfo->HardwareId.Value : "none",
861 (adinfo->Valid & ACPI_VALID_UID) ?
862 strtoul(adinfo->UniqueId.Value, &end, 10) : 0);
870 * Handle per-device ivars
873 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
875 struct acpi_device *ad;
877 if ((ad = device_get_ivars(child)) == NULL) {
878 kprintf("device has no ivars\n");
882 /* ACPI and ISA compatibility ivars */
884 case ACPI_IVAR_HANDLE:
885 *(ACPI_HANDLE *)result = ad->ad_handle;
887 case ACPI_IVAR_MAGIC:
888 *(uintptr_t *)result = ad->ad_magic;
890 case ACPI_IVAR_PRIVATE:
891 *(void **)result = ad->ad_private;
893 case ACPI_IVAR_FLAGS:
894 *(int *)result = ad->ad_flags;
896 case ISA_IVAR_VENDORID:
897 case ISA_IVAR_SERIAL:
898 case ISA_IVAR_COMPATID:
901 case ISA_IVAR_LOGICALID:
902 *(int *)result = acpi_isa_get_logicalid(child);
912 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
914 struct acpi_device *ad;
916 if ((ad = device_get_ivars(child)) == NULL) {
917 kprintf("device has no ivars\n");
922 case ACPI_IVAR_HANDLE:
923 ad->ad_handle = (ACPI_HANDLE)value;
925 case ACPI_IVAR_MAGIC:
926 ad->ad_magic = (uintptr_t)value;
928 case ACPI_IVAR_PRIVATE:
929 ad->ad_private = (void *)value;
931 case ACPI_IVAR_FLAGS:
932 ad->ad_flags = (int)value;
935 panic("bad ivar write request (%d)", index);
943 * Handle child resource allocation/removal
945 static struct resource_list *
946 acpi_get_rlist(device_t dev, device_t child)
948 struct acpi_device *ad;
950 ad = device_get_ivars(child);
955 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
956 * duplicates, we merge any in the sysresource attach routine.
959 acpi_sysres_alloc(device_t dev)
961 struct resource *res;
962 struct resource_list *rl;
963 struct resource_list_entry *rle;
965 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
969 * Probe/attach any sysresource devices. This would be unnecessary if we
970 * had multi-pass probe/attach.
972 if (device_get_children(dev, &children, &child_count) != 0)
974 for (i = 0; i < child_count; i++) {
975 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
976 device_probe_and_attach(children[i]);
978 kfree(children, M_TEMP);
980 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
983 SLIST_FOREACH(rle, rl, link) {
984 if (rle->res != NULL) {
985 device_printf(dev, "duplicate resource for %lx\n", rle->start);
989 /* Only memory and IO resources are valid here. */
1001 /* Pre-allocate resource and add to our rman pool. */
1002 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1003 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
1005 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1008 device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1009 rle->start, rle->count, rle->type);
1014 static struct resource *
1015 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
1016 u_long start, u_long end, u_long count, u_int flags)
1019 struct acpi_device *ad = device_get_ivars(child);
1020 struct resource_list *rl = &ad->ad_rl;
1021 struct resource_list_entry *rle;
1022 struct resource *res;
1027 /* We only handle memory and IO resources through rman. */
1029 case SYS_RES_IOPORT:
1032 case SYS_RES_MEMORY:
1033 rm = &acpi_rman_mem;
1039 ACPI_SERIAL_BEGIN(acpi);
1042 * If this is an allocation of the "default" range for a given RID, and
1043 * we know what the resources for this device are (i.e., they're on the
1044 * child's resource list), use those start/end values.
1046 if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) {
1047 rle = resource_list_find(rl, type, *rid);
1056 * If this is an allocation of a specific range, see if we can satisfy
1057 * the request from our system resource regions. If we can't, pass the
1058 * request up to the parent.
1060 if (start + count - 1 == end && rm != NULL)
1061 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1064 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1065 start, end, count, flags);
1067 rman_set_rid(res, *rid);
1069 /* If requested, activate the resource using the parent's method. */
1070 if (flags & RF_ACTIVE)
1071 if (bus_activate_resource(child, type, *rid, res) != 0) {
1072 rman_release_resource(res);
1078 if (res != NULL && device_get_parent(child) == bus)
1082 * Since bus_config_intr() takes immediate effect, we cannot
1083 * configure the interrupt associated with a device when we
1084 * parse the resources but have to defer it until a driver
1085 * actually allocates the interrupt via bus_alloc_resource().
1087 * XXX: Should we handle the lookup failing?
1089 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
1090 acpi_config_intr(child, &ares);
1092 kprintf("irq resource not found\n");
1097 ACPI_SERIAL_END(acpi);
1102 acpi_release_resource(device_t bus, device_t child, int type, int rid,
1108 /* We only handle memory and IO resources through rman. */
1110 case SYS_RES_IOPORT:
1113 case SYS_RES_MEMORY:
1114 rm = &acpi_rman_mem;
1120 ACPI_SERIAL_BEGIN(acpi);
1123 * If this resource belongs to one of our internal managers,
1124 * deactivate it and release it to the local pool. If it doesn't,
1125 * pass this request up to the parent.
1127 if (rm != NULL && rman_is_region_manager(r, rm)) {
1128 if (rman_get_flags(r) & RF_ACTIVE) {
1129 ret = bus_deactivate_resource(child, type, rid, r);
1133 ret = rman_release_resource(r);
1135 ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
1138 ACPI_SERIAL_END(acpi);
1143 acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1145 struct resource_list *rl;
1147 rl = acpi_get_rlist(bus, child);
1148 resource_list_delete(rl, type, rid);
1151 /* Allocate an IO port or memory resource, given its GAS. */
1153 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1154 struct resource **res, u_int flags)
1156 int error, res_type;
1159 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1162 /* We only support memory and IO spaces. */
1163 switch (gas->SpaceId) {
1164 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1165 res_type = SYS_RES_MEMORY;
1167 case ACPI_ADR_SPACE_SYSTEM_IO:
1168 res_type = SYS_RES_IOPORT;
1171 return (EOPNOTSUPP);
1175 * If the register width is less than 8, assume the BIOS author means
1176 * it is a bit field and just allocate a byte.
1178 if (gas->BitWidth && gas->BitWidth < 8)
1181 /* Validate the address after we're sure we support the space. */
1182 if (gas->Address == 0 || gas->BitWidth == 0)
1185 bus_set_resource(dev, res_type, *rid, gas->Address,
1187 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1192 bus_delete_resource(dev, res_type, *rid);
1197 /* Probe _HID and _CID for compatible ISA PNP ids. */
1199 acpi_isa_get_logicalid(device_t dev)
1201 ACPI_DEVICE_INFO *devinfo;
1207 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1211 buf.Length = ACPI_ALLOCATE_BUFFER;
1213 /* Fetch and validate the HID. */
1214 if ((h = acpi_get_handle(dev)) == NULL)
1216 error = AcpiGetObjectInfo(h, &buf);
1217 if (ACPI_FAILURE(error))
1219 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1221 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
1222 pnpid = PNP_EISAID(devinfo->HardwareId.Value);
1225 if (buf.Pointer != NULL)
1226 AcpiOsFree(buf.Pointer);
1227 return_VALUE (pnpid);
1231 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1233 ACPI_DEVICE_INFO *devinfo;
1240 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1245 buf.Length = ACPI_ALLOCATE_BUFFER;
1247 /* Fetch and validate the CID */
1248 if ((h = acpi_get_handle(dev)) == NULL)
1250 error = AcpiGetObjectInfo(h, &buf);
1251 if (ACPI_FAILURE(error))
1253 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1254 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
1257 if (devinfo->CompatibilityId.Count < count)
1258 count = devinfo->CompatibilityId.Count;
1259 for (i = 0; i < count; i++) {
1260 if (strncmp(devinfo->CompatibilityId.Id[i].Value, "PNP", 3) != 0)
1262 *pnpid++ = PNP_EISAID(devinfo->CompatibilityId.Id[i].Value);
1267 if (buf.Pointer != NULL)
1268 AcpiOsFree(buf.Pointer);
1269 return_VALUE (valid);
1273 acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1278 h = acpi_get_handle(dev);
1279 if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE)
1282 /* Try to match one of the array of IDs with a HID or CID. */
1283 for (i = 0; ids[i] != NULL; i++) {
1284 if (acpi_MatchHid(h, ids[i]))
1291 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1292 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1297 h = ACPI_ROOT_OBJECT;
1298 else if ((h = acpi_get_handle(dev)) == NULL)
1299 return (AE_BAD_PARAMETER);
1300 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1304 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1306 struct acpi_softc *sc;
1312 sc = device_get_softc(bus);
1313 handle = acpi_get_handle(dev);
1316 * XXX If we find these devices, don't try to power them down.
1317 * The serial and IRDA ports on my T23 hang the system when
1318 * set to D3 and it appears that such legacy devices may
1319 * need special handling in their drivers.
1321 if (handle == NULL ||
1322 acpi_MatchHid(handle, "PNP0500") ||
1323 acpi_MatchHid(handle, "PNP0501") ||
1324 acpi_MatchHid(handle, "PNP0502") ||
1325 acpi_MatchHid(handle, "PNP0510") ||
1326 acpi_MatchHid(handle, "PNP0511"))
1330 * Override next state with the value from _SxD, if present. If no
1331 * dstate argument was provided, don't fetch the return value.
1333 ksnprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1335 status = acpi_GetInteger(handle, sxd, dstate);
1337 status = AcpiEvaluateObject(handle, sxd, NULL, NULL);
1354 /* Callback arg for our implementation of walking the namespace. */
1355 struct acpi_device_scan_ctx {
1356 acpi_scan_cb_t user_fn;
1362 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1364 struct acpi_device_scan_ctx *ctx;
1365 device_t dev, old_dev;
1367 ACPI_OBJECT_TYPE type;
1370 * Skip this device if we think we'll have trouble with it or it is
1371 * the parent where the scan began.
1373 ctx = (struct acpi_device_scan_ctx *)arg;
1374 if (acpi_avoid(h) || h == ctx->parent)
1377 /* If this is not a valid device type (e.g., a method), skip it. */
1378 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1380 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1381 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1385 * Call the user function with the current device. If it is unchanged
1386 * afterwards, return. Otherwise, we update the handle to the new dev.
1388 old_dev = acpi_get_device(h);
1390 status = ctx->user_fn(h, &dev, level, ctx->arg);
1391 if (ACPI_FAILURE(status) || old_dev == dev)
1394 /* Remove the old child and its connection to the handle. */
1395 if (old_dev != NULL) {
1396 device_delete_child(device_get_parent(old_dev), old_dev);
1397 AcpiDetachData(h, acpi_fake_objhandler);
1400 /* Recreate the handle association if the user created a device. */
1402 AcpiAttachData(h, acpi_fake_objhandler, dev);
1408 acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1409 acpi_scan_cb_t user_fn, void *arg)
1412 struct acpi_device_scan_ctx ctx;
1414 if (acpi_disabled("children"))
1418 h = ACPI_ROOT_OBJECT;
1419 else if ((h = acpi_get_handle(dev)) == NULL)
1420 return (AE_BAD_PARAMETER);
1421 ctx.user_fn = user_fn;
1424 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1425 acpi_device_scan_cb, &ctx, NULL));
1429 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1430 * device power states since it's close enough to ACPI.
1433 acpi_set_powerstate_method(device_t bus, device_t child, int state)
1440 h = acpi_get_handle(child);
1441 if (state < ACPI_STATE_D0 || state > ACPI_STATE_D3)
1446 /* Ignore errors if the power methods aren't present. */
1447 status = acpi_pwr_switch_consumer(h, state);
1448 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND
1449 && status != AE_BAD_PARAMETER)
1450 device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n",
1451 state, acpi_name(h), AcpiFormatException(status));
1457 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1459 int result, cid_count, i;
1460 uint32_t lid, cids[8];
1462 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1465 * ISA-style drivers attached to ACPI may persist and
1466 * probe manually if we return ENOENT. We never want
1467 * that to happen, so don't ever return it.
1471 /* Scan the supplied IDs for a match */
1472 lid = acpi_isa_get_logicalid(child);
1473 cid_count = acpi_isa_get_compatid(child, cids, 8);
1474 while (ids && ids->ip_id) {
1475 if (lid == ids->ip_id) {
1479 for (i = 0; i < cid_count; i++) {
1480 if (cids[i] == ids->ip_id) {
1489 if (result == 0 && ids->ip_desc)
1490 device_set_desc(child, ids->ip_desc);
1492 return_VALUE (result);
1496 * Look for a MCFG table. If it is present, use the settings for
1497 * domain (segment) 0 to setup PCI config space access via the memory
1501 acpi_enable_pcie(void)
1503 ACPI_TABLE_HEADER *hdr;
1504 ACPI_MCFG_ALLOCATION *alloc, *end;
1507 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1508 if (ACPI_FAILURE(status))
1511 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1512 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1513 while (alloc < end) {
1514 if (alloc->PciSegment == 0) {
1515 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1516 alloc->EndBusNumber);
1524 * Scan all of the ACPI namespace and attach child devices.
1526 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1527 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1528 * However, in violation of the spec, some systems place their PCI link
1529 * devices in \, so we have to walk the whole namespace. We check the
1530 * type of namespace nodes, so this should be ok.
1533 acpi_probe_children(device_t bus)
1536 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1539 * Scan the namespace and insert placeholders for all the devices that
1540 * we find. We also probe/attach any early devices.
1542 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1543 * we want to create nodes for all devices, not just those that are
1544 * currently present. (This assumes that we don't want to create/remove
1545 * devices as they appear, which might be smarter.)
1547 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1548 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
1551 /* Pre-allocate resources for our rman from any sysresource devices. */
1552 acpi_sysres_alloc(bus);
1553 /* Create any static children by calling device identify methods. */
1554 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1555 bus_generic_probe(bus);
1557 /* Probe/attach all children, created staticly and from the namespace. */
1558 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1559 bus_generic_attach(bus);
1562 * Some of these children may have attached others as part of their attach
1563 * process (eg. the root PCI bus driver), so rescan.
1565 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1566 bus_generic_attach(bus);
1568 /* Attach wake sysctls. */
1569 acpi_wake_sysctl_walk(bus);
1571 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1576 * Determine the probe order for a given device.
1579 acpi_probe_order(ACPI_HANDLE handle, int *order)
1581 ACPI_OBJECT_TYPE type;
1584 * 1. I/O port and memory system resource holders
1585 * 2. Embedded controllers (to handle early accesses)
1586 * 3. PCI Link Devices
1589 AcpiGetType(handle, &type);
1590 if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
1592 else if (acpi_MatchHid(handle, "PNP0C09"))
1594 else if (acpi_MatchHid(handle, "PNP0C0F"))
1596 else if (type == ACPI_TYPE_PROCESSOR)
1601 * Evaluate a child device and determine whether we might attach a device to
1605 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1607 ACPI_OBJECT_TYPE type;
1609 device_t bus, child;
1611 char *handle_str, **search;
1612 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI_", "\\_SB_", NULL};
1614 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1616 /* Skip this device if we think we'll have trouble with it. */
1617 if (acpi_avoid(handle))
1618 return_ACPI_STATUS (AE_OK);
1620 bus = (device_t)context;
1621 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1623 case ACPI_TYPE_DEVICE:
1624 case ACPI_TYPE_PROCESSOR:
1625 case ACPI_TYPE_THERMAL:
1626 case ACPI_TYPE_POWER:
1627 if (acpi_disabled("children"))
1631 * Since we scan from \, be sure to skip system scope objects.
1632 * At least \_SB and \_TZ are detected as devices (ACPI-CA bug?)
1634 handle_str = acpi_name(handle);
1635 for (search = scopes; *search != NULL; search++) {
1636 if (strcmp(handle_str, *search) == 0)
1639 if (*search != NULL)
1643 * Create a placeholder device for this node. Sort the
1644 * placeholder so that the probe/attach passes will run
1645 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1646 * are reserved for special objects (i.e., system
1647 * resources). CPU devices have a very high order to
1648 * ensure they are probed after other devices.
1650 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1651 order = level * 10 + 100;
1652 acpi_probe_order(handle, &order);
1653 child = BUS_ADD_CHILD(bus, bus, order, NULL, -1);
1657 /* Associate the handle with the device_t and vice versa. */
1658 acpi_set_handle(child, handle);
1659 AcpiAttachData(handle, acpi_fake_objhandler, child);
1662 * Check that the device is present. If it's not present,
1663 * leave it disabled (so that we have a device_t attached to
1664 * the handle, but we don't probe it).
1666 * XXX PCI link devices sometimes report "present" but not
1667 * "functional" (i.e. if disabled). Go ahead and probe them
1668 * anyway since we may enable them later.
1670 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1671 /* Never disable PCI link devices. */
1672 if (acpi_MatchHid(handle, "PNP0C0F"))
1675 * Docking stations should remain enabled since the system
1676 * may be undocked at boot.
1678 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1681 device_disable(child);
1686 * Get the device's resource settings and attach them.
1687 * Note that if the device has _PRS but no _CRS, we need
1688 * to decide when it's appropriate to try to configure the
1689 * device. Ignore the return value here; it's OK for the
1690 * device not to have any resources.
1692 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
1697 return_ACPI_STATUS (AE_OK);
1701 * AcpiAttachData() requires an object handler but never uses it. This is a
1702 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1705 acpi_fake_objhandler(ACPI_HANDLE h, UINT32 fn, void *data)
1710 acpi_shutdown_final(void *arg, int howto)
1712 struct acpi_softc *sc;
1716 * XXX Shutdown code should only run on the BSP (cpuid 0).
1717 * Some chipsets do not power off the system correctly if called from
1721 if ((howto & RB_POWEROFF) != 0) {
1722 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1723 if (ACPI_FAILURE(status)) {
1724 kprintf("AcpiEnterSleepStatePrep failed - %s\n",
1725 AcpiFormatException(status));
1728 kprintf("Powering system off using ACPI\n");
1729 ACPI_DISABLE_IRQS();
1730 status = AcpiEnterSleepState(ACPI_STATE_S5);
1731 if (ACPI_FAILURE(status)) {
1732 kprintf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1735 kprintf("ACPI power-off failed - timeout\n");
1737 } else if ((howto & RB_HALT) == 0 &&
1738 (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) &&
1739 sc->acpi_handle_reboot) {
1740 /* Reboot using the reset register. */
1742 AcpiGbl_FADT.ResetValue, &AcpiGbl_FADT.ResetRegister);
1743 if (ACPI_FAILURE(status)) {
1744 kprintf("ACPI reset failed - %s\n", AcpiFormatException(status));
1747 kprintf("ACPI reset failed - timeout\n");
1749 } else if (sc->acpi_do_disable && panicstr == NULL) {
1751 * Only disable ACPI if the user requested. On some systems, writing
1752 * the disable value to SMI_CMD hangs the system.
1754 kprintf("Shutting down ACPI\n");
1760 acpi_enable_fixed_events(struct acpi_softc *sc)
1762 static int first_time = 1;
1764 /* Enable and clear fixed events and install handlers. */
1765 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
1766 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1767 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1768 acpi_event_power_button_sleep, sc);
1770 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1772 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
1773 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1774 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1775 acpi_event_sleep_button_sleep, sc);
1777 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1784 * Returns true if the device is actually present and should
1785 * be attached to. This requires the present, enabled, UI-visible
1786 * and diagnostics-passed bits to be set.
1789 acpi_DeviceIsPresent(device_t dev)
1791 ACPI_DEVICE_INFO *devinfo;
1798 if ((h = acpi_get_handle(dev)) == NULL)
1801 buf.Length = ACPI_ALLOCATE_BUFFER;
1802 error = AcpiGetObjectInfo(h, &buf);
1803 if (ACPI_FAILURE(error))
1805 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1807 /* If no _STA method, must be present */
1808 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1811 /* Return true for 'present' and 'functioning' */
1812 if (ACPI_DEVICE_PRESENT(devinfo->CurrentStatus))
1815 AcpiOsFree(buf.Pointer);
1820 * Returns true if the battery is actually present and inserted.
1823 acpi_BatteryIsPresent(device_t dev)
1825 ACPI_DEVICE_INFO *devinfo;
1832 if ((h = acpi_get_handle(dev)) == NULL)
1835 buf.Length = ACPI_ALLOCATE_BUFFER;
1836 error = AcpiGetObjectInfo(h, &buf);
1837 if (ACPI_FAILURE(error))
1839 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1841 /* If no _STA method, must be present */
1842 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1845 /* Return true for 'present', 'battery present', and 'functioning' */
1846 if (ACPI_BATTERY_PRESENT(devinfo->CurrentStatus))
1849 AcpiOsFree(buf.Pointer);
1854 * Match a HID string against a handle
1857 acpi_MatchHid(ACPI_HANDLE h, const char *hid)
1859 ACPI_DEVICE_INFO *devinfo;
1865 if (hid == NULL || h == NULL)
1868 buf.Length = ACPI_ALLOCATE_BUFFER;
1869 error = AcpiGetObjectInfo(h, &buf);
1870 if (ACPI_FAILURE(error))
1872 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1874 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
1875 strcmp(hid, devinfo->HardwareId.Value) == 0)
1877 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
1878 for (i = 0; i < devinfo->CompatibilityId.Count; i++) {
1879 if (strcmp(hid, devinfo->CompatibilityId.Id[i].Value) == 0) {
1886 AcpiOsFree(buf.Pointer);
1891 * Return the handle of a named object within our scope, ie. that of (parent)
1892 * or one if its parents.
1895 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1900 /* Walk back up the tree to the root */
1902 status = AcpiGetHandle(parent, path, &r);
1903 if (ACPI_SUCCESS(status)) {
1907 /* XXX Return error here? */
1908 if (status != AE_NOT_FOUND)
1910 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1911 return (AE_NOT_FOUND);
1916 /* Find the difference between two PM tick counts. */
1918 acpi_TimerDelta(uint32_t end, uint32_t start)
1923 delta = end - start;
1924 else if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
1925 delta = ((0xFFFFFFFF - start) + end + 1);
1927 delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
1932 * Allocate a buffer with a preset data size.
1935 acpi_AllocBuffer(int size)
1939 if ((buf = kmalloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
1942 buf->Pointer = (void *)(buf + 1);
1947 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
1950 ACPI_OBJECT_LIST args;
1952 arg1.Type = ACPI_TYPE_INTEGER;
1953 arg1.Integer.Value = number;
1955 args.Pointer = &arg1;
1957 return (AcpiEvaluateObject(handle, path, &args, NULL));
1961 * Evaluate a path that should return an integer.
1964 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
1971 handle = ACPI_ROOT_OBJECT;
1974 * Assume that what we've been pointed at is an Integer object, or
1975 * a method that will return an Integer.
1977 buf.Pointer = ¶m;
1978 buf.Length = sizeof(param);
1979 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1980 if (ACPI_SUCCESS(status)) {
1981 if (param.Type == ACPI_TYPE_INTEGER)
1982 *number = param.Integer.Value;
1988 * In some applications, a method that's expected to return an Integer
1989 * may instead return a Buffer (probably to simplify some internal
1990 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1991 * convert it into an Integer as best we can.
1995 if (status == AE_BUFFER_OVERFLOW) {
1996 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
1997 status = AE_NO_MEMORY;
1999 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2000 if (ACPI_SUCCESS(status))
2001 status = acpi_ConvertBufferToInteger(&buf, number);
2002 AcpiOsFree(buf.Pointer);
2009 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2015 p = (ACPI_OBJECT *)bufp->Pointer;
2016 if (p->Type == ACPI_TYPE_INTEGER) {
2017 *number = p->Integer.Value;
2020 if (p->Type != ACPI_TYPE_BUFFER)
2022 if (p->Buffer.Length > sizeof(int))
2023 return (AE_BAD_DATA);
2026 val = p->Buffer.Pointer;
2027 for (i = 0; i < p->Buffer.Length; i++)
2028 *number += val[i] << (i * 8);
2033 * Iterate over the elements of an a package object, calling the supplied
2034 * function for each element.
2036 * XXX possible enhancement might be to abort traversal on error.
2039 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2040 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2045 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2046 return (AE_BAD_PARAMETER);
2048 /* Iterate over components */
2050 comp = pkg->Package.Elements;
2051 for (; i < pkg->Package.Count; i++, comp++)
2058 * Find the (index)th resource object in a set.
2061 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2066 rp = (ACPI_RESOURCE *)buf->Pointer;
2070 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2071 return (AE_BAD_PARAMETER);
2073 /* Check for terminator */
2074 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2075 return (AE_NOT_FOUND);
2076 rp = ACPI_NEXT_RESOURCE(rp);
2085 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2087 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2088 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2089 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2092 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2095 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2100 /* Initialise the buffer if necessary. */
2101 if (buf->Pointer == NULL) {
2102 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2103 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2104 return (AE_NO_MEMORY);
2105 rp = (ACPI_RESOURCE *)buf->Pointer;
2106 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2113 * Scan the current buffer looking for the terminator.
2114 * This will either find the terminator or hit the end
2115 * of the buffer and return an error.
2117 rp = (ACPI_RESOURCE *)buf->Pointer;
2119 /* Range check, don't go outside the buffer */
2120 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2121 return (AE_BAD_PARAMETER);
2122 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2124 rp = ACPI_NEXT_RESOURCE(rp);
2128 * Check the size of the buffer and expand if required.
2131 * size of existing resources before terminator +
2132 * size of new resource and header +
2133 * size of terminator.
2135 * Note that this loop should really only run once, unless
2136 * for some reason we are stuffing a *really* huge resource.
2138 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2139 res->Length + ACPI_RS_SIZE_NO_DATA +
2140 ACPI_RS_SIZE_MIN) >= buf->Length) {
2141 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2142 return (AE_NO_MEMORY);
2143 bcopy(buf->Pointer, newp, buf->Length);
2144 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2145 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
2146 AcpiOsFree(buf->Pointer);
2147 buf->Pointer = newp;
2148 buf->Length += buf->Length;
2151 /* Insert the new resource. */
2152 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2154 /* And add the terminator. */
2155 rp = ACPI_NEXT_RESOURCE(rp);
2156 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2163 * Set interrupt model.
2166 acpi_SetIntrModel(int model)
2169 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2173 * DEPRECATED. This interface has serious deficiencies and will be
2176 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2177 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2180 acpi_SetSleepState(struct acpi_softc *sc, int state)
2186 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2189 return (acpi_EnterSleepState(sc, state));
2193 acpi_sleep_force(void *arg)
2195 struct acpi_softc *sc;
2197 kprintf("acpi: suspend request timed out, forcing sleep now\n");
2199 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2200 kprintf("acpi: force sleep state S%d failed\n", sc->acpi_next_sstate);
2204 * Request that the system enter the given suspend state. All /dev/apm
2205 * devices and devd(8) will be notified. Userland then has a chance to
2206 * save state and acknowledge the request. The system sleeps once all
2210 acpi_ReqSleepState(struct acpi_softc *sc, int state)
2213 struct apm_clone_data *clone;
2216 if (state < ACPI_STATE_S1 || state > ACPI_STATE_S5)
2219 /* S5 (soft-off) should be entered directly with no waiting. */
2220 if (state == ACPI_STATE_S5) {
2221 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, state)))
2227 #if !defined(__i386__)
2228 /* This platform does not support acpi suspend/resume. */
2229 return (EOPNOTSUPP);
2232 /* If a suspend request is already in progress, just return. */
2234 if (sc->acpi_next_sstate != 0) {
2239 /* Record the pending state and notify all apm devices. */
2240 sc->acpi_next_sstate = state;
2242 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2243 clone->notify_status = APM_EV_NONE;
2244 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
2245 selwakeuppri(&clone->sel_read, PZERO);
2246 KNOTE_UNLOCKED(&clone->sel_read.si_note, 0);
2251 /* If devd(8) is not running, immediately enter the sleep state. */
2252 if (devctl_process_running() == FALSE) {
2254 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) {
2261 /* Now notify devd(8) also. */
2262 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2265 * Set a timeout to fire if userland doesn't ack the suspend request
2266 * in time. This way we still eventually go to sleep if we were
2267 * overheating or running low on battery, even if userland is hung.
2268 * We cancel this timeout once all userland acks are in or the
2269 * suspend request is aborted.
2271 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2277 * Acknowledge (or reject) a pending sleep state. The caller has
2278 * prepared for suspend and is now ready for it to proceed. If the
2279 * error argument is non-zero, it indicates suspend should be cancelled
2280 * and gives an errno value describing why. Once all votes are in,
2281 * we suspend the system.
2284 acpi_AckSleepState(struct apm_clone_data *clone, int error)
2286 struct acpi_softc *sc;
2289 #if !defined(__i386__)
2290 /* This platform does not support acpi suspend/resume. */
2291 return (EOPNOTSUPP);
2294 /* If no pending sleep state, return an error. */
2296 sc = clone->acpi_sc;
2297 if (sc->acpi_next_sstate == 0) {
2302 /* Caller wants to abort suspend process. */
2304 sc->acpi_next_sstate = 0;
2305 callout_stop(&sc->susp_force_to);
2306 kprintf("acpi: listener on %s cancelled the pending suspend\n",
2307 devtoname(clone->cdev));
2313 * Mark this device as acking the suspend request. Then, walk through
2314 * all devices, seeing if they agree yet. We only count devices that
2315 * are writable since read-only devices couldn't ack the request.
2317 clone->notify_status = APM_EV_ACKED;
2319 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2320 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2321 clone->notify_status != APM_EV_ACKED) {
2327 /* If all devices have voted "yes", we will suspend now. */
2329 callout_stop(&sc->susp_force_to);
2333 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2341 acpi_sleep_enable(void *arg)
2344 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
2347 enum acpi_sleep_state {
2350 ACPI_SS_DEV_SUSPEND,
2356 * Enter the desired system sleep state.
2358 * Currently we support S1-S5 but S4 is only S4BIOS
2361 acpi_EnterSleepState(struct acpi_softc *sc, int state)
2366 enum acpi_sleep_state slp_state;
2368 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2370 /* Re-entry once we're suspending is not allowed. */
2373 if (sc->acpi_sleep_disabled) {
2375 kprintf("acpi: suspend request ignored (not ready yet)\n");
2378 sc->acpi_sleep_disabled = 1;
2382 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2383 * drivers need this.
2386 slp_state = ACPI_SS_NONE;
2392 status = AcpiGetSleepTypeData(state, &TypeA, &TypeB);
2393 if (status == AE_NOT_FOUND) {
2394 device_printf(sc->acpi_dev,
2395 "Sleep state S%d not supported by BIOS\n", state);
2397 } else if (ACPI_FAILURE(status)) {
2398 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
2399 AcpiFormatException(status));
2403 sc->acpi_sstate = state;
2405 /* Enable any GPEs as appropriate and requested by the user. */
2406 acpi_wake_prep_walk(state);
2407 slp_state = ACPI_SS_GPE_SET;
2410 * Inform all devices that we are going to sleep. If at least one
2411 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2413 * XXX Note that a better two-pass approach with a 'veto' pass
2414 * followed by a "real thing" pass would be better, but the current
2415 * bus interface does not provide for this.
2417 if (DEVICE_SUSPEND(root_bus) != 0) {
2418 device_printf(sc->acpi_dev, "device_suspend failed\n");
2421 slp_state = ACPI_SS_DEV_SUSPEND;
2423 /* If testing device suspend only, back out of everything here. */
2424 if (acpi_susp_bounce)
2427 status = AcpiEnterSleepStatePrep(state);
2428 if (ACPI_FAILURE(status)) {
2429 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2430 AcpiFormatException(status));
2433 slp_state = ACPI_SS_SLP_PREP;
2435 if (sc->acpi_sleep_delay > 0)
2436 DELAY(sc->acpi_sleep_delay * 1000000);
2438 if (state != ACPI_STATE_S1) {
2439 acpi_sleep_machdep(sc, state);
2441 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2442 if (state == ACPI_STATE_S4)
2445 ACPI_DISABLE_IRQS();
2446 status = AcpiEnterSleepState(state);
2447 if (ACPI_FAILURE(status)) {
2448 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2449 AcpiFormatException(status));
2453 slp_state = ACPI_SS_SLEPT;
2457 * Shut down cleanly and power off. This will call us back through the
2458 * shutdown handlers.
2460 shutdown_nice(RB_POWEROFF);
2464 status = AE_BAD_PARAMETER;
2469 * Back out state according to how far along we got in the suspend
2470 * process. This handles both the error and success cases.
2472 sc->acpi_next_sstate = 0;
2473 if (slp_state >= ACPI_SS_GPE_SET) {
2474 acpi_wake_prep_walk(state);
2475 sc->acpi_sstate = ACPI_STATE_S0;
2477 if (slp_state >= ACPI_SS_SLP_PREP)
2478 AcpiLeaveSleepState(state);
2479 if (slp_state >= ACPI_SS_DEV_SUSPEND)
2480 DEVICE_RESUME(root_bus);
2481 if (slp_state >= ACPI_SS_SLEPT)
2482 acpi_enable_fixed_events(sc);
2484 /* Allow another sleep request after a while. */
2485 /* XXX: needs timeout */
2486 if (state != ACPI_STATE_S5)
2487 acpi_sleep_enable(sc);
2489 /* Run /etc/rc.resume after we are back. */
2490 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2493 return_ACPI_STATUS (status);
2496 /* Initialize a device's wake GPE. */
2498 acpi_wake_init(device_t dev, int type)
2500 struct acpi_prw_data prw;
2502 /* Evaluate _PRW to find the GPE. */
2503 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2506 /* Set the requested type for the GPE (runtime, wake, or both). */
2507 if (ACPI_FAILURE(AcpiSetGpeType(prw.gpe_handle, prw.gpe_bit, type))) {
2508 device_printf(dev, "set GPE type failed\n");
2515 /* Enable or disable the device's wake GPE. */
2517 acpi_wake_set_enable(device_t dev, int enable)
2519 struct acpi_prw_data prw;
2523 /* Make sure the device supports waking the system and get the GPE. */
2524 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2527 flags = acpi_get_flags(dev);
2529 status = AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2530 if (ACPI_FAILURE(status)) {
2531 device_printf(dev, "enable wake failed\n");
2534 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2536 status = AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2537 if (ACPI_FAILURE(status)) {
2538 device_printf(dev, "disable wake failed\n");
2541 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2548 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
2550 struct acpi_prw_data prw;
2553 /* Check that this is a wake-capable device and get its GPE. */
2554 if (acpi_parse_prw(handle, &prw) != 0)
2556 dev = acpi_get_device(handle);
2559 * The destination sleep state must be less than (i.e., higher power)
2560 * or equal to the value specified by _PRW. If this GPE cannot be
2561 * enabled for the next sleep state, then disable it. If it can and
2562 * the user requested it be enabled, turn on any required power resources
2565 if (sstate > prw.lowest_wake) {
2566 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2568 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2569 acpi_name(handle), sstate);
2570 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2571 acpi_pwr_wake_enable(handle, 1);
2572 acpi_SetInteger(handle, "_PSW", 1);
2574 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2575 acpi_name(handle), sstate);
2582 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
2584 struct acpi_prw_data prw;
2588 * Check that this is a wake-capable device and get its GPE. Return
2589 * now if the user didn't enable this device for wake.
2591 if (acpi_parse_prw(handle, &prw) != 0)
2593 dev = acpi_get_device(handle);
2594 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2598 * If this GPE couldn't be enabled for the previous sleep state, it was
2599 * disabled before going to sleep so re-enable it. If it was enabled,
2600 * clear _PSW and turn off any power resources it used.
2602 if (sstate > prw.lowest_wake) {
2603 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2605 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2607 acpi_SetInteger(handle, "_PSW", 0);
2608 acpi_pwr_wake_enable(handle, 0);
2610 device_printf(dev, "run_prep cleaned up for %s\n",
2618 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
2622 /* If suspending, run the sleep prep function, otherwise wake. */
2623 sstate = *(int *)context;
2624 if (AcpiGbl_SystemAwakeAndRunning)
2625 acpi_wake_sleep_prep(handle, sstate);
2627 acpi_wake_run_prep(handle, sstate);
2631 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2633 acpi_wake_prep_walk(int sstate)
2635 ACPI_HANDLE sb_handle;
2637 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
2638 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
2639 acpi_wake_prep, &sstate, NULL);
2643 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2645 acpi_wake_sysctl_walk(device_t dev)
2648 int error, i, numdevs;
2653 error = device_get_children(dev, &devlist, &numdevs);
2654 if (error != 0 || numdevs == 0) {
2656 kfree(devlist, M_TEMP);
2659 for (i = 0; i < numdevs; i++) {
2661 acpi_wake_sysctl_walk(child);
2662 if (!device_is_attached(child))
2664 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
2665 if (ACPI_SUCCESS(status)) {
2666 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
2667 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
2668 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
2669 acpi_wake_set_sysctl, "I", "Device set to wake the system");
2672 kfree(devlist, M_TEMP);
2679 /* Enable or disable wake from userland. */
2681 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2686 dev = (device_t)arg1;
2687 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
2689 error = sysctl_handle_int(oidp, &enable, 0, req);
2690 if (error != 0 || req->newptr == NULL)
2692 if (enable != 0 && enable != 1)
2695 return (acpi_wake_set_enable(dev, enable));
2699 /* Parse a device's _PRW into a structure. */
2701 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2704 ACPI_BUFFER prw_buffer;
2705 ACPI_OBJECT *res, *res2;
2706 int error, i, power_count;
2708 if (h == NULL || prw == NULL)
2712 * The _PRW object (7.2.9) is only required for devices that have the
2713 * ability to wake the system from a sleeping state.
2716 prw_buffer.Pointer = NULL;
2717 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2718 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2719 if (ACPI_FAILURE(status))
2721 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2724 if (!ACPI_PKG_VALID(res, 2))
2728 * Element 1 of the _PRW object:
2729 * The lowest power system sleeping state that can be entered while still
2730 * providing wake functionality. The sleeping state being entered must
2731 * be less than (i.e., higher power) or equal to this value.
2733 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2737 * Element 0 of the _PRW object:
2739 switch (res->Package.Elements[0].Type) {
2740 case ACPI_TYPE_INTEGER:
2742 * If the data type of this package element is numeric, then this
2743 * _PRW package element is the bit index in the GPEx_EN, in the
2744 * GPE blocks described in the FADT, of the enable bit that is
2745 * enabled for the wake event.
2747 prw->gpe_handle = NULL;
2748 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2751 case ACPI_TYPE_PACKAGE:
2753 * If the data type of this package element is a package, then this
2754 * _PRW package element is itself a package containing two
2755 * elements. The first is an object reference to the GPE Block
2756 * device that contains the GPE that will be triggered by the wake
2757 * event. The second element is numeric and it contains the bit
2758 * index in the GPEx_EN, in the GPE Block referenced by the
2759 * first element in the package, of the enable bit that is enabled for
2762 * For example, if this field is a package then it is of the form:
2763 * Package() {\_SB.PCI0.ISA.GPE, 2}
2765 res2 = &res->Package.Elements[0];
2766 if (!ACPI_PKG_VALID(res2, 2))
2768 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2769 if (prw->gpe_handle == NULL)
2771 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2779 /* Elements 2 to N of the _PRW object are power resources. */
2780 power_count = res->Package.Count - 2;
2781 if (power_count > ACPI_PRW_MAX_POWERRES) {
2782 kprintf("ACPI device %s has too many power resources\n", acpi_name(h));
2785 prw->power_res_count = power_count;
2786 for (i = 0; i < power_count; i++)
2787 prw->power_res[i] = res->Package.Elements[i];
2790 if (prw_buffer.Pointer != NULL)
2791 AcpiOsFree(prw_buffer.Pointer);
2796 * ACPI Event Handlers
2799 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2802 acpi_system_eventhandler_sleep(void *arg, int state)
2806 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2808 /* Check if button action is disabled. */
2809 if (state == ACPI_S_STATES_MAX + 1)
2812 /* Request that the system prepare to enter the given suspend state. */
2813 ret = acpi_ReqSleepState((struct acpi_softc *)arg, state);
2815 kprintf("acpi: request to enter state S%d failed (err %d)\n",
2822 acpi_system_eventhandler_wakeup(void *arg, int state)
2825 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2827 /* Currently, nothing to do for wakeup. */
2833 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2836 acpi_event_power_button_sleep(void *context)
2838 struct acpi_softc *sc = (struct acpi_softc *)context;
2840 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2842 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2844 return_VALUE (ACPI_INTERRUPT_HANDLED);
2848 acpi_event_power_button_wake(void *context)
2850 struct acpi_softc *sc = (struct acpi_softc *)context;
2852 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2854 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2856 return_VALUE (ACPI_INTERRUPT_HANDLED);
2860 acpi_event_sleep_button_sleep(void *context)
2862 struct acpi_softc *sc = (struct acpi_softc *)context;
2864 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2866 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2868 return_VALUE (ACPI_INTERRUPT_HANDLED);
2872 acpi_event_sleep_button_wake(void *context)
2874 struct acpi_softc *sc = (struct acpi_softc *)context;
2876 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2878 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2880 return_VALUE (ACPI_INTERRUPT_HANDLED);
2884 * XXX This static buffer is suboptimal. There is no locking so only
2885 * use this for single-threaded callers.
2888 acpi_name(ACPI_HANDLE handle)
2891 static char data[256];
2893 buf.Length = sizeof(data);
2896 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
2898 return ("(unknown)");
2902 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2903 * parts of the namespace.
2906 acpi_avoid(ACPI_HANDLE handle)
2908 char *cp, *env, *np;
2911 np = acpi_name(handle);
2914 if ((env = kgetenv("debug.acpi.avoid")) == NULL)
2917 /* Scan the avoid list checking for a match */
2920 while (*cp != 0 && isspace(*cp))
2925 while (cp[len] != 0 && !isspace(cp[len]))
2927 if (!strncmp(cp, np, len)) {
2939 * Debugging/bug-avoidance. Disable ACPI subsystem components.
2942 acpi_disabled(char *subsys)
2947 if ((env = kgetenv("debug.acpi.disabled")) == NULL)
2949 if (strcmp(env, "all") == 0) {
2954 /* Scan the disable list, checking for a match. */
2957 while (*cp != '\0' && isspace(*cp))
2962 while (cp[len] != '\0' && !isspace(cp[len]))
2964 if (strncmp(cp, subsys, len) == 0) {
2976 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
2977 * components are enabled by default. The ones that are not have to be
2978 * enabled via debug.acpi.enabled.
2981 acpi_enabled(char *subsys)
2986 if ((env = kgetenv("debug.acpi.enabled")) == NULL)
2988 if (strcmp(env, "all") == 0) {
2993 /* Scan the enable list, checking for a match. */
2996 while (*cp != '\0' && isspace(*cp))
3001 while (cp[len] != '\0' && !isspace(cp[len]))
3003 if (strncmp(cp, subsys, len) == 0) {
3015 * Control interface.
3017 * We multiplex ioctls for all participating ACPI devices here. Individual
3018 * drivers wanting to be accessible via /dev/acpi should use the
3019 * register/deregister interface to make their handlers visible.
3021 struct acpi_ioctl_hook
3023 TAILQ_ENTRY(acpi_ioctl_hook) link;
3029 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
3030 static int acpi_ioctl_hooks_initted;
3033 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
3035 struct acpi_ioctl_hook *hp;
3037 if ((hp = kmalloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
3044 if (acpi_ioctl_hooks_initted == 0) {
3045 TAILQ_INIT(&acpi_ioctl_hooks);
3046 acpi_ioctl_hooks_initted = 1;
3048 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
3055 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
3057 struct acpi_ioctl_hook *hp;
3060 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
3061 if (hp->cmd == cmd && hp->fn == fn)
3065 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
3066 kfree(hp, M_ACPIDEV);
3072 acpiopen(struct dev_open_args *ap)
3078 acpiclose(struct dev_close_args *ap)
3084 acpiioctl(struct dev_ioctl_args *ap)
3086 struct acpi_softc *sc;
3087 struct acpi_ioctl_hook *hp;
3092 sc = ap->a_head.a_dev->si_drv1;
3095 * Scan the list of registered ioctls, looking for handlers.
3098 if (acpi_ioctl_hooks_initted)
3099 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3100 if (hp->cmd == ap->a_cmd)
3105 return (hp->fn(ap->a_cmd, ap->a_data, hp->arg));
3108 * Core ioctls are not permitted for non-writable user.
3109 * Currently, other ioctls just fetch information.
3110 * Not changing system behavior.
3112 if ((ap->a_fflag & FWRITE) == 0)
3115 /* Core system ioctls. */
3116 switch (ap->a_cmd) {
3117 case ACPIIO_REQSLPSTATE:
3118 state = *(int *)ap->a_data;
3119 if (state != ACPI_STATE_S5)
3120 error = acpi_ReqSleepState(sc, state);
3122 kprintf("power off via acpi ioctl not supported\n");
3126 case ACPIIO_ACKSLPSTATE:
3127 error = *(int *)ap->a_data;
3128 error = acpi_AckSleepState(sc->acpi_clone, error);
3130 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3132 state = *(int *)ap->a_data;
3133 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
3134 if (ACPI_SUCCESS(acpi_SetSleepState(sc, state)))
3145 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3149 UINT8 state, TypeA, TypeB;
3151 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3152 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++)
3153 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
3154 sbuf_printf(&sb, "S%d ", state);
3157 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3163 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3165 char sleep_state[10];
3167 u_int new_state, old_state;
3169 old_state = *(u_int *)oidp->oid_arg1;
3170 if (old_state > ACPI_S_STATES_MAX + 1)
3171 strlcpy(sleep_state, "unknown", sizeof(sleep_state));
3173 strlcpy(sleep_state, sleep_state_names[old_state], sizeof(sleep_state));
3174 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3175 if (error == 0 && req->newptr != NULL) {
3176 new_state = ACPI_STATE_S0;
3177 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++)
3178 if (strcmp(sleep_state, sleep_state_names[new_state]) == 0)
3180 if (new_state <= ACPI_S_STATES_MAX + 1) {
3181 if (new_state != old_state)
3182 *(u_int *)oidp->oid_arg1 = new_state;
3190 /* Inform devctl(4) when we receive a Notify. */
3192 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3194 char notify_buf[16];
3195 ACPI_BUFFER handle_buf;
3198 if (subsystem == NULL)
3201 handle_buf.Pointer = NULL;
3202 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3203 status = AcpiNsHandleToPathname(h, &handle_buf);
3204 if (ACPI_FAILURE(status))
3206 ksnprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
3207 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
3208 AcpiOsFree(handle_buf.Pointer);
3213 * Support for parsing debug options from the kernel environment.
3215 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3216 * by specifying the names of the bits in the debug.acpi.layer and
3217 * debug.acpi.level environment variables. Bits may be unset by
3218 * prefixing the bit name with !.
3226 static struct debugtag dbg_layer[] = {
3227 {"ACPI_UTILITIES", ACPI_UTILITIES},
3228 {"ACPI_HARDWARE", ACPI_HARDWARE},
3229 {"ACPI_EVENTS", ACPI_EVENTS},
3230 {"ACPI_TABLES", ACPI_TABLES},
3231 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3232 {"ACPI_PARSER", ACPI_PARSER},
3233 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3234 {"ACPI_EXECUTER", ACPI_EXECUTER},
3235 {"ACPI_RESOURCES", ACPI_RESOURCES},
3236 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3237 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3238 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3239 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3241 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3242 {"ACPI_BATTERY", ACPI_BATTERY},
3243 {"ACPI_BUS", ACPI_BUS},
3244 {"ACPI_BUTTON", ACPI_BUTTON},
3245 {"ACPI_EC", ACPI_EC},
3246 {"ACPI_FAN", ACPI_FAN},
3247 {"ACPI_POWERRES", ACPI_POWERRES},
3248 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3249 {"ACPI_THERMAL", ACPI_THERMAL},
3250 {"ACPI_TIMER", ACPI_TIMER},
3251 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3255 static struct debugtag dbg_level[] = {
3256 {"ACPI_LV_ERROR", ACPI_LV_ERROR},
3257 {"ACPI_LV_WARN", ACPI_LV_WARN},
3258 {"ACPI_LV_INIT", ACPI_LV_INIT},
3259 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3260 {"ACPI_LV_INFO", ACPI_LV_INFO},
3261 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3263 /* Trace verbosity level 1 [Standard Trace Level] */
3264 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3265 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3266 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3267 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3268 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3269 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3270 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3271 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3272 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3273 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3274 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3275 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3276 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3277 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3278 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3280 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3281 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3282 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3283 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3284 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3285 {"ACPI_LV_ALL", ACPI_LV_ALL},
3287 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3288 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3289 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3290 {"ACPI_LV_IO", ACPI_LV_IO},
3291 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3292 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3294 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3295 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
3296 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
3297 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
3298 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
3299 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
3304 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
3316 while (*ep && !isspace(*ep))
3327 for (i = 0; tag[i].name != NULL; i++) {
3328 if (!strncmp(cp, tag[i].name, l)) {
3330 *flag |= tag[i].value;
3332 *flag &= ~tag[i].value;
3340 acpi_set_debugging(void *junk)
3342 char *layer, *level;
3349 layer = kgetenv("debug.acpi.layer");
3350 level = kgetenv("debug.acpi.level");
3351 if (layer == NULL && level == NULL)
3354 kprintf("ACPI set debug");
3355 if (layer != NULL) {
3356 if (strcmp("NONE", layer) != 0)
3357 kprintf(" layer '%s'", layer);
3358 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
3361 if (level != NULL) {
3362 if (strcmp("NONE", level) != 0)
3363 kprintf(" level '%s'", level);
3364 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
3370 SYSINIT(acpi_debugging, SI_BOOT1_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3374 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
3377 struct debugtag *tag;
3380 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
3382 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
3383 tag = &dbg_layer[0];
3384 dbg = &AcpiDbgLayer;
3386 tag = &dbg_level[0];
3387 dbg = &AcpiDbgLevel;
3390 /* Get old values if this is a get request. */
3391 ACPI_SERIAL_BEGIN(acpi);
3393 sbuf_cpy(&sb, "NONE");
3394 } else if (req->newptr == NULL) {
3395 for (; tag->name != NULL; tag++) {
3396 if ((*dbg & tag->value) == tag->value)
3397 sbuf_printf(&sb, "%s ", tag->name);
3403 /* Copy out the old values to the user. */
3404 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
3407 /* If the user is setting a string, parse it. */
3408 if (error == 0 && req->newptr != NULL) {
3410 setenv((char *)oidp->oid_arg1, (char *)req->newptr);
3411 acpi_set_debugging(NULL);
3413 ACPI_SERIAL_END(acpi);
3418 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
3419 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
3420 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
3421 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3422 #endif /* ACPI_DEBUG */
3425 acpi_pm_func(u_long cmd, void *arg, ...)
3427 int state, acpi_state;
3429 struct acpi_softc *sc;
3434 case POWER_CMD_SUSPEND:
3435 sc = (struct acpi_softc *)arg;
3442 state = va_arg(ap, int);
3446 case POWER_SLEEP_STATE_STANDBY:
3447 acpi_state = sc->acpi_standby_sx;
3449 case POWER_SLEEP_STATE_SUSPEND:
3450 acpi_state = sc->acpi_suspend_sx;
3452 case POWER_SLEEP_STATE_HIBERNATE:
3453 acpi_state = ACPI_STATE_S4;
3460 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
3473 acpi_pm_register(void *arg)
3475 if (!cold || resource_disabled("acpi", 0))
3478 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3481 SYSINIT(power, SI_BOOT2_KLD, SI_ORDER_ANY, acpi_pm_register, 0);