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
29 * $FreeBSD: src/sys/dev/acpica/acpi.c,v 1.243.2.4.4.1 2009/04/15 03:14:26 kensmith Exp $
33 #include <sys/param.h>
34 #include <sys/kernel.h>
36 #include <sys/fcntl.h>
37 #include <sys/malloc.h>
38 #include <sys/module.h>
41 #include <sys/reboot.h>
42 #include <sys/sysctl.h>
43 #include <sys/ctype.h>
44 #include <sys/linker.h>
45 #include <sys/power.h>
47 #include <sys/device.h>
48 #include <sys/spinlock.h>
49 #include <sys/spinlock2.h>
52 #include <bus/isa/isavar.h>
53 #include <bus/isa/pnpvar.h>
56 #include <dev/acpica/acpivar.h>
57 #include <dev/acpica/acpiio.h>
63 #include <bus/pci/pci_cfgreg.h>
64 #include <bus/pci/pcivar.h>
65 #include <bus/pci/pci_private.h>
67 #include <vm/vm_param.h>
69 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
71 /* Hooks for the ACPI CA debugging infrastructure */
72 #define _COMPONENT ACPI_BUS
73 ACPI_MODULE_NAME("ACPI")
75 static d_open_t acpiopen;
76 static d_close_t acpiclose;
77 static d_ioctl_t acpiioctl;
79 static struct dev_ops acpi_ops = {
86 /* Global mutex for locking access to the ACPI subsystem. */
87 struct lock acpi_lock;
89 /* Bitmap of device quirks. */
92 static int acpi_modevent(struct module *mod, int event, void *junk);
93 static void acpi_identify(driver_t *driver, device_t parent);
94 static int acpi_probe(device_t dev);
95 static int acpi_attach(device_t dev);
96 static int acpi_suspend(device_t dev);
97 static int acpi_resume(device_t dev);
98 static int acpi_shutdown(device_t dev);
99 static device_t acpi_add_child(device_t bus, device_t parent, int order, const char *name,
101 static int acpi_print_child(device_t bus, device_t child);
102 static void acpi_probe_nomatch(device_t bus, device_t child);
103 static void acpi_driver_added(device_t dev, driver_t *driver);
104 static int acpi_read_ivar(device_t dev, device_t child, int index,
106 static int acpi_write_ivar(device_t dev, device_t child, int index,
108 static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
109 static int acpi_sysres_alloc(device_t dev);
110 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
111 int type, int *rid, u_long start, u_long end,
112 u_long count, u_int flags, int cpuid);
113 static int acpi_release_resource(device_t bus, device_t child, int type,
114 int rid, struct resource *r);
115 static void acpi_delete_resource(device_t bus, device_t child, int type,
117 static uint32_t acpi_isa_get_logicalid(device_t dev);
118 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
119 static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
120 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
121 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
123 static int acpi_device_pwr_for_sleep(device_t bus, device_t dev,
125 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
126 void *context, void **retval);
127 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
128 int max_depth, acpi_scan_cb_t user_fn, void *arg);
129 static int acpi_set_powerstate_method(device_t bus, device_t child,
131 static int acpi_isa_pnp_probe(device_t bus, device_t child,
132 struct isa_pnp_id *ids);
133 static void acpi_probe_children(device_t bus);
134 static void acpi_probe_order(ACPI_HANDLE handle, int *order);
135 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
136 void *context, void **status);
137 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
138 static void acpi_shutdown_final(void *arg, int howto);
139 static void acpi_enable_fixed_events(struct acpi_softc *sc);
140 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
141 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
142 static int acpi_wake_prep_walk(int sstate);
143 static int acpi_wake_sysctl_walk(device_t dev);
145 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
147 static void acpi_system_eventhandler_sleep(void *arg, int state);
148 static void acpi_system_eventhandler_wakeup(void *arg, int state);
149 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
150 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
151 static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS);
152 static int acpi_pm_func(u_long cmd, void *arg, ...);
153 static int acpi_child_location_str_method(device_t acdev, device_t child,
154 char *buf, size_t buflen);
155 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
156 char *buf, size_t buflen);
157 static void acpi_enable_pcie(void);
159 static device_method_t acpi_methods[] = {
160 /* Device interface */
161 DEVMETHOD(device_identify, acpi_identify),
162 DEVMETHOD(device_probe, acpi_probe),
163 DEVMETHOD(device_attach, acpi_attach),
164 DEVMETHOD(device_shutdown, acpi_shutdown),
165 DEVMETHOD(device_detach, bus_generic_detach),
166 DEVMETHOD(device_suspend, acpi_suspend),
167 DEVMETHOD(device_resume, acpi_resume),
170 DEVMETHOD(bus_add_child, acpi_add_child),
171 DEVMETHOD(bus_print_child, acpi_print_child),
172 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
173 DEVMETHOD(bus_driver_added, acpi_driver_added),
174 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
175 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
176 DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
177 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
178 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
179 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
180 DEVMETHOD(bus_release_resource, acpi_release_resource),
181 DEVMETHOD(bus_delete_resource, acpi_delete_resource),
182 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
183 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
184 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
185 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
186 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
187 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
190 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
191 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
192 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
193 DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
196 DEVMETHOD(pci_set_powerstate, acpi_set_powerstate_method),
199 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
204 static driver_t acpi_driver = {
207 sizeof(struct acpi_softc),
210 static devclass_t acpi_devclass;
211 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, NULL);
212 MODULE_VERSION(acpi, 1);
214 ACPI_SERIAL_DECL(acpi, "ACPI serializer")
216 /* Local pools for managing system resources for ACPI child devices. */
217 static struct rman acpi_rman_io, acpi_rman_mem;
219 #define ACPI_MINIMUM_AWAKETIME 5
221 static const char* sleep_state_names[] = {
222 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
224 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
225 static char acpi_ca_version[12];
226 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
227 acpi_ca_version, 0, "Version of Intel ACPICA");
230 * Use this tunable to disable the control method auto-serialization
231 * mechanism that was added in 20140214 and superseded the previous
232 * AcpiGbl_SerializeAllMethods global.
234 static int acpi_auto_serialize_methods = 1;
235 TUNABLE_INT("hw.acpi.auto_serialize_methods", &acpi_auto_serialize_methods);
237 /* Allow users to dump Debug objects without ACPI debugger. */
238 static int acpi_debug_objects;
239 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects);
240 SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects,
241 CTLFLAG_RW | CTLTYPE_INT, NULL, 0, acpi_debug_objects_sysctl, "I",
242 "Enable Debug objects");
244 /* Allow the interpreter to ignore common mistakes in BIOS. */
245 static int acpi_interpreter_slack = 1;
246 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack);
247 SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RD,
248 &acpi_interpreter_slack, 1, "Turn on interpreter slack mode.");
250 /* Power devices off and on in suspend and resume. XXX Remove once tested. */
251 static int acpi_do_powerstate = 1;
252 TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate);
253 SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW,
254 &acpi_do_powerstate, 1, "Turn off devices when suspending.");
256 /* Allow users to override quirks. */
257 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
259 static int acpi_susp_bounce;
260 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
261 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
264 * ACPI can only be loaded as a module by the loader; activating it after
265 * system bootstrap time is not useful, and can be fatal to the system.
266 * It also cannot be unloaded, since the entire system bus heirarchy hangs
270 acpi_modevent(struct module *mod, int event, void *junk)
275 kprintf("The ACPI driver cannot be loaded after boot.\n");
280 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
290 * Perform early initialization.
295 static int started = 0;
299 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
301 /* Only run the startup code once. The MADT driver also calls this. */
303 return_VALUE (AE_OK);
307 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
308 * if more tables exist.
310 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
311 kprintf("ACPI: Table initialisation failed: %s\n",
312 AcpiFormatException(status));
313 return_VALUE (status);
316 /* Set up any quirks we have for this system. */
317 if (acpi_quirks == ACPI_Q_OK)
318 acpi_table_quirks(&acpi_quirks);
320 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
321 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
322 acpi_quirks &= ~ACPI_Q_BROKEN;
323 if (acpi_quirks & ACPI_Q_BROKEN) {
324 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
328 return_VALUE (status);
332 * Detect ACPI, perform early initialisation
335 acpi_identify(driver_t *driver, device_t parent)
339 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
344 /* Check that we haven't been disabled with a hint. */
345 if (resource_disabled("acpi", 0))
348 /* Make sure we're not being doubly invoked. */
349 if (device_find_child(parent, "acpi", 0) != NULL)
352 ksnprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
354 /* Initialize root tables. */
355 if (ACPI_FAILURE(acpi_Startup())) {
356 kprintf("ACPI: Try disabling either ACPI or apic support.\n");
360 /* Attach the actual ACPI device. */
361 if ((child = BUS_ADD_CHILD(parent, parent, 10, "acpi", 0)) == NULL) {
362 device_printf(parent, "device_identify failed\n");
368 * Fetch some descriptive data from ACPI to put in our attach message.
371 acpi_probe(device_t dev)
373 ACPI_TABLE_RSDP *rsdp;
374 ACPI_TABLE_HEADER *rsdt;
375 ACPI_PHYSICAL_ADDRESS paddr;
376 char buf[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
379 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
381 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
382 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
383 device_printf(dev, "probe failed, other PM system enabled.\n");
384 return_VALUE (ENXIO);
387 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
388 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
389 return_VALUE (ENXIO);
390 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
391 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
393 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
394 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
396 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
397 return_VALUE (ENXIO);
398 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
399 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
402 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
405 device_set_desc_copy(dev, sbuf_data(&sb));
407 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
413 acpi_attach(device_t dev)
415 struct acpi_softc *sc;
422 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
424 sc = device_get_softc(dev);
426 callout_init(&sc->susp_force_to);
428 if ((error = acpi_task_thread_init())) {
429 device_printf(dev, "Could not start task thread.\n");
435 /* Initialize resource manager. */
436 acpi_rman_io.rm_type = RMAN_ARRAY;
437 acpi_rman_io.rm_start = 0;
438 acpi_rman_io.rm_end = 0xffff;
439 acpi_rman_io.rm_descr = "ACPI I/O ports";
440 if (rman_init(&acpi_rman_io, -1) != 0)
441 panic("acpi rman_init IO ports failed");
442 acpi_rman_mem.rm_type = RMAN_ARRAY;
443 acpi_rman_mem.rm_start = 0;
444 acpi_rman_mem.rm_end = ~0ul;
445 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
446 if (rman_init(&acpi_rman_mem, -1) != 0)
447 panic("acpi rman_init memory failed");
449 /* Initialise the ACPI mutex */
450 ACPI_LOCK_INIT(acpi, "acpi");
451 ACPI_SERIAL_INIT(acpi);
454 * Set the globals from our tunables. This is needed because ACPI-CA
455 * uses UINT8 for some values and we have no tunable_byte.
457 AcpiGbl_AutoSerializeMethods = acpi_auto_serialize_methods ? TRUE : FALSE;
458 AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE;
459 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
463 * Disable Debug Object output.
465 AcpiDbgLevel &= ~ACPI_LV_DEBUG_OBJECT;
468 /* Start up the ACPI CA subsystem. */
469 status = AcpiInitializeSubsystem();
470 if (ACPI_FAILURE(status)) {
471 device_printf(dev, "Could not initialize Subsystem: %s\n",
472 AcpiFormatException(status));
476 /* Load ACPI name space. */
477 status = AcpiLoadTables();
478 if (ACPI_FAILURE(status)) {
479 device_printf(dev, "Could not load Namespace: %s\n",
480 AcpiFormatException(status));
484 /* Handle MCFG table if present. */
487 /* Install the default address space handlers. */
488 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
489 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
490 if (ACPI_FAILURE(status)) {
491 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
492 AcpiFormatException(status));
495 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
496 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
497 if (ACPI_FAILURE(status)) {
498 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
499 AcpiFormatException(status));
502 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
503 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
504 if (ACPI_FAILURE(status)) {
505 device_printf(dev, "could not initialise PciConfig handler: %s\n",
506 AcpiFormatException(status));
511 * Note that some systems (specifically, those with namespace evaluation
512 * issues that require the avoidance of parts of the namespace) must
513 * avoid running _INI and _STA on everything, as well as dodging the final
516 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
518 * XXX We should arrange for the object init pass after we have attached
519 * all our child devices, but on many systems it works here.
522 if (ktestenv("debug.acpi.avoid"))
523 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
525 /* Bring the hardware and basic handlers online. */
526 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
527 device_printf(dev, "Could not enable ACPI: %s\n",
528 AcpiFormatException(status));
533 * Fix up the interrupt timer after enabling ACPI, so that the
534 * interrupt cputimer that choked by ACPI power management could
535 * be resurrected before probing various devices.
538 cputimer_intr_pmfixup();
541 * Call the ECDT probe function to provide EC functionality before
542 * the namespace has been evaluated.
544 * XXX This happens before the sysresource devices have been probed and
545 * attached so its resources come from nexus0. In practice, this isn't
546 * a problem but should be addressed eventually.
548 acpi_ec_ecdt_probe(dev);
550 /* Bring device objects and regions online. */
551 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
552 device_printf(dev, "Could not initialize ACPI objects: %s\n",
553 AcpiFormatException(status));
558 * Setup our sysctl tree.
560 * XXX: This doesn't check to make sure that none of these fail.
562 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
563 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
564 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
565 device_get_name(dev), CTLFLAG_RD, 0, "");
566 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
567 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
568 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
569 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
570 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
571 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
572 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
573 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
574 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
575 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
576 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
577 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
578 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
579 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
580 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
581 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
582 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
583 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
584 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
585 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
587 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
588 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
589 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
590 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
591 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
592 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
593 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
594 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
595 OID_AUTO, "handle_reboot", CTLFLAG_RW,
596 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
599 * Default to 1 second before sleeping to give some machines time to
602 sc->acpi_sleep_delay = 1;
604 sc->acpi_verbose = 1;
605 if ((env = kgetenv("hw.acpi.verbose")) != NULL) {
606 if (strcmp(env, "0") != 0)
607 sc->acpi_verbose = 1;
611 /* Only enable reboot by default if the FADT says it is available. */
612 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER)
613 sc->acpi_handle_reboot = 1;
615 /* Only enable S4BIOS by default if the FACS says it is available. */
616 if (AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
620 * Dispatch the default sleep state to devices. The lid switch is set
621 * to NONE by default to avoid surprising users.
623 sc->acpi_power_button_sx = ACPI_STATE_S5;
624 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
625 sc->acpi_standby_sx = ACPI_STATE_S1;
626 sc->acpi_suspend_sx = ACPI_STATE_S3;
628 /* Pick the first valid sleep state for the sleep button default. */
629 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
630 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
631 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
632 sc->acpi_sleep_button_sx = state;
636 acpi_enable_fixed_events(sc);
639 * Scan the namespace and attach/initialise children.
642 /* Register our shutdown handler. */
643 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
647 * Register our acpi event handlers.
648 * XXX should be configurable eg. via userland policy manager.
650 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
651 sc, ACPI_EVENT_PRI_LAST);
652 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
653 sc, ACPI_EVENT_PRI_LAST);
655 /* Flag our initial states. */
656 sc->acpi_enabled = 1;
657 sc->acpi_sstate = ACPI_STATE_S0;
658 sc->acpi_sleep_disabled = 0;
659 /* Create the control device */
660 sc->acpi_dev_t = make_dev(&acpi_ops, 0, UID_ROOT, GID_WHEEL, 0644,
662 sc->acpi_dev_t->si_drv1 = sc;
664 if ((error = acpi_machdep_init(dev)))
667 /* Register ACPI again to pass the correct argument of pm_func. */
668 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
670 if (!acpi_disabled("bus"))
671 acpi_probe_children(dev);
673 /* Update all GPEs and enable runtime GPEs. */
674 status = AcpiUpdateAllGpes();
675 if (ACPI_FAILURE(status)) {
676 device_printf(dev, "Could not update all GPEs: %s\n",
677 AcpiFormatException(status));
680 /* Allow sleep request after a while. */
681 /* timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME); */
686 cputimer_intr_pmfixup();
687 acpi_task_thread_schedule();
688 return_VALUE (error);
692 acpi_suspend(device_t dev)
694 device_t child, *devlist;
695 int error, i, numdevs, pstate;
697 /* First give child devices a chance to suspend. */
698 error = bus_generic_suspend(dev);
703 * Now, set them into the appropriate power state, usually D3. If the
704 * device has an _SxD method for the next sleep state, use that power
707 device_get_children(dev, &devlist, &numdevs);
708 for (i = 0; i < numdevs; i++) {
709 /* If the device is not attached, we've powered it down elsewhere. */
711 if (!device_is_attached(child))
715 * Default to D3 for all sleep states. The _SxD method is optional
716 * so set the powerstate even if it's absent.
718 pstate = PCI_POWERSTATE_D3;
719 error = acpi_device_pwr_for_sleep(device_get_parent(child),
721 if ((error == 0 || error == ESRCH) && acpi_do_powerstate)
722 pci_set_powerstate(child, pstate);
724 kfree(devlist, M_TEMP);
731 acpi_resume(device_t dev)
735 device_t child, *devlist;
738 * Put all devices in D0 before resuming them. Call _S0D on each one
739 * since some systems expect this.
741 device_get_children(dev, &devlist, &numdevs);
742 for (i = 0; i < numdevs; i++) {
744 handle = acpi_get_handle(child);
746 AcpiEvaluateObject(handle, "_S0D", NULL, NULL);
747 if (device_is_attached(child) && acpi_do_powerstate)
748 pci_set_powerstate(child, PCI_POWERSTATE_D0);
750 kfree(devlist, M_TEMP);
752 return (bus_generic_resume(dev));
756 acpi_shutdown(device_t dev)
758 /* Allow children to shutdown first. */
759 bus_generic_shutdown(dev);
762 * Enable any GPEs that are able to power-on the system (i.e., RTC).
763 * Also, disable any that are not valid for this state (most).
765 acpi_wake_prep_walk(ACPI_STATE_S5);
771 * Handle a new device being added
774 acpi_add_child(device_t bus, device_t parent, int order, const char *name, int unit)
776 struct acpi_device *ad;
779 if ((ad = kmalloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
782 resource_list_init(&ad->ad_rl);
783 child = device_add_child_ordered(parent, order, name, unit);
785 device_set_ivars(child, ad);
787 kfree(ad, M_ACPIDEV);
792 acpi_print_child(device_t bus, device_t child)
794 struct acpi_device *adev = device_get_ivars(child);
795 struct resource_list *rl = &adev->ad_rl;
798 retval += bus_print_child_header(bus, child);
799 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
800 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
801 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
802 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
803 if (device_get_flags(child))
804 retval += kprintf(" flags %#x", device_get_flags(child));
805 retval += bus_print_child_footer(bus, child);
811 * If this device is an ACPI child but no one claimed it, attempt
812 * to power it off. We'll power it back up when a driver is added.
814 * XXX Disabled for now since many necessary devices (like fdc and
815 * ATA) don't claim the devices we created for them but still expect
816 * them to be powered up.
819 acpi_probe_nomatch(device_t bus, device_t child)
822 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
826 * If a new driver has a chance to probe a child, first power it up.
828 * XXX Disabled for now (see acpi_probe_nomatch for details).
831 acpi_driver_added(device_t dev, driver_t *driver)
833 device_t child, *devlist;
836 DEVICE_IDENTIFY(driver, dev);
837 device_get_children(dev, &devlist, &numdevs);
838 for (i = 0; i < numdevs; i++) {
840 if (device_get_state(child) == DS_NOTPRESENT) {
841 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
842 if (device_probe_and_attach(child) != 0)
843 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
846 kfree(devlist, M_TEMP);
849 /* Location hint for devctl(8) */
851 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
854 struct acpi_device *dinfo = device_get_ivars(child);
856 if (dinfo->ad_handle)
857 ksnprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
859 ksnprintf(buf, buflen, "unknown");
863 /* PnP information for devctl(8) */
865 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
868 ACPI_DEVICE_INFO *adinfo;
869 struct acpi_device *dinfo = device_get_ivars(child);
873 error = AcpiGetObjectInfo(dinfo->ad_handle, &adinfo);
875 ksnprintf(buf, buflen, "unknown");
877 ksnprintf(buf, buflen, "_HID=%s _UID=%lu",
878 (adinfo->Valid & ACPI_VALID_HID) ?
879 adinfo->HardwareId.String : "none",
880 (adinfo->Valid & ACPI_VALID_UID) ?
881 strtoul(adinfo->UniqueId.String, &end, 10) : 0);
889 * Handle per-device ivars
892 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
894 struct acpi_device *ad;
896 if ((ad = device_get_ivars(child)) == NULL) {
897 kprintf("device has no ivars\n");
901 /* ACPI and ISA compatibility ivars */
903 case ACPI_IVAR_HANDLE:
904 *(ACPI_HANDLE *)result = ad->ad_handle;
906 case ACPI_IVAR_MAGIC:
907 *result = ad->ad_magic;
909 case ACPI_IVAR_PRIVATE:
910 *(void **)result = ad->ad_private;
912 case ACPI_IVAR_FLAGS:
913 *(int *)result = ad->ad_flags;
915 case ISA_IVAR_VENDORID:
916 case ISA_IVAR_SERIAL:
917 case ISA_IVAR_COMPATID:
920 case ISA_IVAR_LOGICALID:
921 *(int *)result = acpi_isa_get_logicalid(child);
931 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
933 struct acpi_device *ad;
935 if ((ad = device_get_ivars(child)) == NULL) {
936 kprintf("device has no ivars\n");
941 case ACPI_IVAR_HANDLE:
942 ad->ad_handle = (ACPI_HANDLE)value;
944 case ACPI_IVAR_MAGIC:
945 ad->ad_magic = value;
947 case ACPI_IVAR_PRIVATE:
948 ad->ad_private = (void *)value;
950 case ACPI_IVAR_FLAGS:
951 ad->ad_flags = (int)value;
954 panic("bad ivar write request (%d)", index);
962 * Handle child resource allocation/removal
964 static struct resource_list *
965 acpi_get_rlist(device_t dev, device_t child)
967 struct acpi_device *ad;
969 ad = device_get_ivars(child);
974 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
975 * duplicates, we merge any in the sysresource attach routine.
978 acpi_sysres_alloc(device_t dev)
980 struct resource *res;
981 struct resource_list *rl;
982 struct resource_list_entry *rle;
984 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
988 * Probe/attach any sysresource devices. This would be unnecessary if we
989 * had multi-pass probe/attach.
991 if (device_get_children(dev, &children, &child_count) != 0)
993 for (i = 0; i < child_count; i++) {
994 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
995 device_probe_and_attach(children[i]);
997 kfree(children, M_TEMP);
999 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
1002 SLIST_FOREACH(rle, rl, link) {
1003 if (rle->res != NULL) {
1004 device_printf(dev, "duplicate resource for %lx\n", rle->start);
1008 /* Only memory and IO resources are valid here. */
1009 switch (rle->type) {
1010 case SYS_RES_IOPORT:
1013 case SYS_RES_MEMORY:
1014 rm = &acpi_rman_mem;
1020 /* Pre-allocate resource and add to our rman pool. */
1021 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1022 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count,
1025 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1028 device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1029 rle->start, rle->count, rle->type);
1034 static struct resource *
1035 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
1036 u_long start, u_long end, u_long count, u_int flags, int cpuid)
1039 struct acpi_device *ad = device_get_ivars(child);
1040 struct resource_list *rl = &ad->ad_rl;
1041 struct resource_list_entry *rle;
1042 struct resource *res;
1047 /* We only handle memory and IO resources through rman. */
1049 case SYS_RES_IOPORT:
1052 case SYS_RES_MEMORY:
1053 rm = &acpi_rman_mem;
1059 ACPI_SERIAL_BEGIN(acpi);
1062 * If this is an allocation of the "default" range for a given RID, and
1063 * we know what the resources for this device are (i.e., they're on the
1064 * child's resource list), use those start/end values.
1066 if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) {
1067 rle = resource_list_find(rl, type, *rid);
1077 * If this is an allocation of a specific range, see if we can satisfy
1078 * the request from our system resource regions. If we can't, pass the
1079 * request up to the parent.
1081 if (start + count - 1 == end && rm != NULL)
1082 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1085 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1086 start, end, count, flags, cpuid);
1088 rman_set_rid(res, *rid);
1090 /* If requested, activate the resource using the parent's method. */
1091 if (flags & RF_ACTIVE)
1092 if (bus_activate_resource(child, type, *rid, res) != 0) {
1093 rman_release_resource(res);
1099 if (res != NULL && device_get_parent(child) == bus)
1103 * Since bus_config_intr() takes immediate effect, we cannot
1104 * configure the interrupt associated with a device when we
1105 * parse the resources but have to defer it until a driver
1106 * actually allocates the interrupt via bus_alloc_resource().
1108 * XXX: Should we handle the lookup failing?
1110 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
1111 acpi_config_intr(child, &ares);
1113 kprintf("irq resource not found\n");
1118 ACPI_SERIAL_END(acpi);
1123 acpi_release_resource(device_t bus, device_t child, int type, int rid,
1129 /* We only handle memory and IO resources through rman. */
1131 case SYS_RES_IOPORT:
1134 case SYS_RES_MEMORY:
1135 rm = &acpi_rman_mem;
1141 ACPI_SERIAL_BEGIN(acpi);
1144 * If this resource belongs to one of our internal managers,
1145 * deactivate it and release it to the local pool. If it doesn't,
1146 * pass this request up to the parent.
1148 if (rm != NULL && rman_is_region_manager(r, rm)) {
1149 if (rman_get_flags(r) & RF_ACTIVE) {
1150 ret = bus_deactivate_resource(child, type, rid, r);
1154 ret = rman_release_resource(r);
1156 ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
1159 ACPI_SERIAL_END(acpi);
1164 acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1166 struct resource_list *rl;
1168 rl = acpi_get_rlist(bus, child);
1169 resource_list_delete(rl, type, rid);
1172 /* Allocate an IO port or memory resource, given its GAS. */
1174 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1175 struct resource **res, u_int flags)
1177 int error, res_type;
1180 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1183 /* We only support memory and IO spaces. */
1184 switch (gas->SpaceId) {
1185 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1186 res_type = SYS_RES_MEMORY;
1188 case ACPI_ADR_SPACE_SYSTEM_IO:
1189 res_type = SYS_RES_IOPORT;
1192 return (EOPNOTSUPP);
1196 * If the register width is less than 8, assume the BIOS author means
1197 * it is a bit field and just allocate a byte.
1199 if (gas->BitWidth && gas->BitWidth < 8)
1202 /* Validate the address after we're sure we support the space. */
1203 if (gas->Address == 0 || gas->BitWidth == 0)
1206 bus_set_resource(dev, res_type, *rid, gas->Address,
1207 gas->BitWidth / 8, -1);
1208 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1213 bus_delete_resource(dev, res_type, *rid);
1218 /* Probe _HID and _CID for compatible ISA PNP ids. */
1220 acpi_isa_get_logicalid(device_t dev)
1222 ACPI_DEVICE_INFO *devinfo;
1227 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1232 /* Fetch and validate the HID. */
1233 if ((h = acpi_get_handle(dev)) == NULL)
1235 error = AcpiGetObjectInfo(h, &devinfo);
1236 if (ACPI_FAILURE(error))
1239 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
1240 pnpid = PNP_EISAID(devinfo->HardwareId.String);
1244 AcpiOsFree(devinfo);
1245 return_VALUE (pnpid);
1249 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1251 ACPI_DEVICE_INFO *devinfo;
1257 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1263 /* Fetch and validate the CID */
1264 if ((h = acpi_get_handle(dev)) == NULL)
1266 error = AcpiGetObjectInfo(h, &devinfo);
1267 if (ACPI_FAILURE(error))
1269 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
1272 if (devinfo->CompatibleIdList.Count < count)
1273 count = devinfo->CompatibleIdList.Count;
1274 for (i = 0; i < count; i++) {
1275 if (strncmp(devinfo->CompatibleIdList.Ids[i].String, "PNP", 3) != 0)
1277 *pnpid++ = PNP_EISAID(devinfo->CompatibleIdList.Ids[i].String);
1283 AcpiOsFree(devinfo);
1284 return_VALUE (valid);
1288 acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1293 h = acpi_get_handle(dev);
1294 if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE)
1297 /* Try to match one of the array of IDs with a HID or CID. */
1298 for (i = 0; ids[i] != NULL; i++) {
1299 if (acpi_MatchHid(h, ids[i]))
1306 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1307 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1312 h = ACPI_ROOT_OBJECT;
1313 else if ((h = acpi_get_handle(dev)) == NULL)
1314 return (AE_BAD_PARAMETER);
1315 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1319 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1321 struct acpi_softc *sc;
1327 sc = device_get_softc(bus);
1328 handle = acpi_get_handle(dev);
1331 * XXX If we find these devices, don't try to power them down.
1332 * The serial and IRDA ports on my T23 hang the system when
1333 * set to D3 and it appears that such legacy devices may
1334 * need special handling in their drivers.
1336 if (handle == NULL ||
1337 acpi_MatchHid(handle, "PNP0500") ||
1338 acpi_MatchHid(handle, "PNP0501") ||
1339 acpi_MatchHid(handle, "PNP0502") ||
1340 acpi_MatchHid(handle, "PNP0510") ||
1341 acpi_MatchHid(handle, "PNP0511"))
1345 * Override next state with the value from _SxD, if present. If no
1346 * dstate argument was provided, don't fetch the return value.
1348 ksnprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1350 status = acpi_GetInteger(handle, sxd, dstate);
1352 status = AcpiEvaluateObject(handle, sxd, NULL, NULL);
1369 /* Callback arg for our implementation of walking the namespace. */
1370 struct acpi_device_scan_ctx {
1371 acpi_scan_cb_t user_fn;
1377 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1379 struct acpi_device_scan_ctx *ctx;
1380 device_t dev, old_dev;
1382 ACPI_OBJECT_TYPE type;
1385 * Skip this device if we think we'll have trouble with it or it is
1386 * the parent where the scan began.
1388 ctx = (struct acpi_device_scan_ctx *)arg;
1389 if (acpi_avoid(h) || h == ctx->parent)
1392 /* If this is not a valid device type (e.g., a method), skip it. */
1393 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1395 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1396 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1400 * Call the user function with the current device. If it is unchanged
1401 * afterwards, return. Otherwise, we update the handle to the new dev.
1403 old_dev = acpi_get_device(h);
1405 status = ctx->user_fn(h, &dev, level, ctx->arg);
1406 if (ACPI_FAILURE(status) || old_dev == dev)
1409 /* Remove the old child and its connection to the handle. */
1410 if (old_dev != NULL) {
1411 device_delete_child(device_get_parent(old_dev), old_dev);
1412 AcpiDetachData(h, acpi_fake_objhandler);
1415 /* Recreate the handle association if the user created a device. */
1417 AcpiAttachData(h, acpi_fake_objhandler, dev);
1423 acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1424 acpi_scan_cb_t user_fn, void *arg)
1427 struct acpi_device_scan_ctx ctx;
1429 if (acpi_disabled("children"))
1433 h = ACPI_ROOT_OBJECT;
1434 else if ((h = acpi_get_handle(dev)) == NULL)
1435 return (AE_BAD_PARAMETER);
1436 ctx.user_fn = user_fn;
1439 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1440 acpi_device_scan_cb, NULL, &ctx, NULL));
1444 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1445 * device power states since it's close enough to ACPI.
1448 acpi_set_powerstate_method(device_t bus, device_t child, int state)
1455 h = acpi_get_handle(child);
1456 if (state < ACPI_STATE_D0 || state > ACPI_STATE_D3)
1461 /* Ignore errors if the power methods aren't present. */
1462 status = acpi_pwr_switch_consumer(h, state);
1463 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND
1464 && status != AE_BAD_PARAMETER)
1465 device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n",
1466 state, acpi_name(h), AcpiFormatException(status));
1472 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1474 int result, cid_count, i;
1475 uint32_t lid, cids[8];
1477 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1480 * ISA-style drivers attached to ACPI may persist and
1481 * probe manually if we return ENOENT. We never want
1482 * that to happen, so don't ever return it.
1486 /* Scan the supplied IDs for a match */
1487 lid = acpi_isa_get_logicalid(child);
1488 cid_count = acpi_isa_get_compatid(child, cids, 8);
1489 while (ids && ids->ip_id) {
1490 if (lid == ids->ip_id) {
1494 for (i = 0; i < cid_count; i++) {
1495 if (cids[i] == ids->ip_id) {
1504 if (result == 0 && ids->ip_desc)
1505 device_set_desc(child, ids->ip_desc);
1507 return_VALUE (result);
1511 * Look for a MCFG table. If it is present, use the settings for
1512 * domain (segment) 0 to setup PCI config space access via the memory
1516 acpi_enable_pcie(void)
1518 ACPI_TABLE_HEADER *hdr;
1519 ACPI_MCFG_ALLOCATION *alloc, *end;
1522 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1523 if (ACPI_FAILURE(status))
1526 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1527 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1528 while (alloc < end) {
1529 if (alloc->PciSegment == 0) {
1530 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1531 alloc->EndBusNumber);
1539 * Scan all of the ACPI namespace and attach child devices.
1541 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1542 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1543 * However, in violation of the spec, some systems place their PCI link
1544 * devices in \, so we have to walk the whole namespace. We check the
1545 * type of namespace nodes, so this should be ok.
1548 acpi_probe_children(device_t bus)
1551 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1554 * Scan the namespace and insert placeholders for all the devices that
1555 * we find. We also probe/attach any early devices.
1557 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1558 * we want to create nodes for all devices, not just those that are
1559 * currently present. (This assumes that we don't want to create/remove
1560 * devices as they appear, which might be smarter.)
1562 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1563 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100,
1564 acpi_probe_child, NULL, bus, NULL);
1566 /* Pre-allocate resources for our rman from any sysresource devices. */
1567 acpi_sysres_alloc(bus);
1568 /* Create any static children by calling device identify methods. */
1569 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1570 bus_generic_probe(bus);
1572 /* Probe/attach all children, created staticly and from the namespace. */
1573 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1574 bus_generic_attach(bus);
1577 * Some of these children may have attached others as part of their attach
1578 * process (eg. the root PCI bus driver), so rescan.
1580 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1581 bus_generic_attach(bus);
1583 /* Attach wake sysctls. */
1584 acpi_wake_sysctl_walk(bus);
1586 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1591 * Determine the probe order for a given device.
1594 acpi_probe_order(ACPI_HANDLE handle, int *order)
1596 ACPI_OBJECT_TYPE type;
1599 * 1. I/O port and memory system resource holders
1600 * 2. Embedded controllers (to handle early accesses)
1601 * 3. PCI Link Devices
1604 AcpiGetType(handle, &type);
1605 if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
1607 else if (acpi_MatchHid(handle, "PNP0C09"))
1609 else if (acpi_MatchHid(handle, "PNP0C0F"))
1611 else if (type == ACPI_TYPE_PROCESSOR)
1616 * Evaluate a child device and determine whether we might attach a device to
1620 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1622 struct acpi_prw_data prw;
1623 ACPI_OBJECT_TYPE type;
1625 device_t bus, child;
1629 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1631 if (acpi_disabled("children"))
1632 return_ACPI_STATUS (AE_OK);
1634 /* Skip this device if we think we'll have trouble with it. */
1635 if (acpi_avoid(handle))
1636 return_ACPI_STATUS (AE_OK);
1638 bus = (device_t)context;
1639 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1640 handle_str = acpi_name(handle);
1642 case ACPI_TYPE_DEVICE:
1644 * Since we scan from \, be sure to skip system scope objects.
1645 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1646 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
1647 * during the intialization and \_TZ_ is to support Notify() on it.
1649 if (strcmp(handle_str, "\\_SB_") == 0 ||
1650 strcmp(handle_str, "\\_TZ_") == 0)
1653 if (acpi_parse_prw(handle, &prw) == 0)
1654 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
1657 case ACPI_TYPE_PROCESSOR:
1658 case ACPI_TYPE_THERMAL:
1659 case ACPI_TYPE_POWER:
1661 * Create a placeholder device for this node. Sort the
1662 * placeholder so that the probe/attach passes will run
1663 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1664 * are reserved for special objects (i.e., system
1665 * resources). CPU devices have a very high order to
1666 * ensure they are probed after other devices.
1668 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1669 order = level * 10 + 100;
1670 acpi_probe_order(handle, &order);
1671 child = BUS_ADD_CHILD(bus, bus, order, NULL, -1);
1675 /* Associate the handle with the device_t and vice versa. */
1676 acpi_set_handle(child, handle);
1677 AcpiAttachData(handle, acpi_fake_objhandler, child);
1680 * Check that the device is present. If it's not present,
1681 * leave it disabled (so that we have a device_t attached to
1682 * the handle, but we don't probe it).
1684 * XXX PCI link devices sometimes report "present" but not
1685 * "functional" (i.e. if disabled). Go ahead and probe them
1686 * anyway since we may enable them later.
1688 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1689 /* Never disable PCI link devices. */
1690 if (acpi_MatchHid(handle, "PNP0C0F"))
1693 * Docking stations should remain enabled since the system
1694 * may be undocked at boot.
1696 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1699 device_disable(child);
1704 * Get the device's resource settings and attach them.
1705 * Note that if the device has _PRS but no _CRS, we need
1706 * to decide when it's appropriate to try to configure the
1707 * device. Ignore the return value here; it's OK for the
1708 * device not to have any resources.
1710 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
1715 return_ACPI_STATUS (AE_OK);
1719 * AcpiAttachData() requires an object handler but never uses it. This is a
1720 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1723 acpi_fake_objhandler(ACPI_HANDLE h, void *data)
1728 acpi_shutdown_final(void *arg, int howto)
1730 struct acpi_softc *sc;
1734 * XXX Shutdown code should only run on the BSP (cpuid 0).
1735 * Some chipsets do not power off the system correctly if called from
1739 if ((howto & RB_POWEROFF) != 0) {
1740 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1741 if (ACPI_FAILURE(status)) {
1742 kprintf("AcpiEnterSleepStatePrep failed - %s\n",
1743 AcpiFormatException(status));
1746 kprintf("Powering system off using ACPI\n");
1747 ACPI_DISABLE_IRQS();
1748 status = AcpiEnterSleepState(ACPI_STATE_S5);
1749 if (ACPI_FAILURE(status)) {
1750 kprintf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1753 kprintf("ACPI power-off failed - timeout\n");
1755 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) {
1756 /* Reboot using the reset register. */
1757 status = AcpiReset();
1758 if (ACPI_FAILURE(status)) {
1759 if (status != AE_NOT_EXIST)
1760 kprintf("ACPI reset failed - %s\n", AcpiFormatException(status));
1763 kprintf("ACPI reset failed - timeout\n");
1765 } else if (sc->acpi_do_disable && panicstr == NULL) {
1767 * Only disable ACPI if the user requested. On some systems, writing
1768 * the disable value to SMI_CMD hangs the system.
1770 kprintf("Shutting down ACPI\n");
1776 acpi_enable_fixed_events(struct acpi_softc *sc)
1778 static int first_time = 1;
1780 /* Enable and clear fixed events and install handlers. */
1781 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
1782 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1783 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1784 acpi_event_power_button_sleep, sc);
1786 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1788 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
1789 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1790 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1791 acpi_event_sleep_button_sleep, sc);
1793 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1800 * Returns true if the device is actually present and should
1801 * be attached to. This requires the present, enabled, UI-visible
1802 * and diagnostics-passed bits to be set.
1805 acpi_DeviceIsPresent(device_t dev)
1807 ACPI_DEVICE_INFO *devinfo;
1813 if ((h = acpi_get_handle(dev)) == NULL)
1815 error = AcpiGetObjectInfo(h, &devinfo);
1816 if (ACPI_FAILURE(error))
1819 /* If no _STA method, must be present */
1820 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1823 /* Return true for 'present' and 'functioning' */
1824 if (ACPI_DEVICE_PRESENT(devinfo->CurrentStatus))
1827 AcpiOsFree(devinfo);
1832 * Returns true if the battery is actually present and inserted.
1835 acpi_BatteryIsPresent(device_t dev)
1837 ACPI_DEVICE_INFO *devinfo;
1843 if ((h = acpi_get_handle(dev)) == NULL)
1845 error = AcpiGetObjectInfo(h, &devinfo);
1846 if (ACPI_FAILURE(error))
1849 /* If no _STA method, must be present */
1850 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1853 /* Return true for 'present', 'battery present', and 'functioning' */
1854 if (ACPI_BATTERY_PRESENT(devinfo->CurrentStatus))
1857 AcpiOsFree(devinfo);
1862 * Match a HID string against a handle
1865 acpi_MatchHid(ACPI_HANDLE h, const char *hid)
1867 ACPI_DEVICE_INFO *devinfo;
1872 if (hid == NULL || h == NULL)
1874 error = AcpiGetObjectInfo(h, &devinfo);
1875 if (ACPI_FAILURE(error))
1878 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
1879 strcmp(hid, devinfo->HardwareId.String) == 0)
1881 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
1882 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
1883 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
1890 AcpiOsFree(devinfo);
1895 * Return the handle of a named object within our scope, ie. that of (parent)
1896 * or one if its parents.
1899 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1904 /* Walk back up the tree to the root */
1906 status = AcpiGetHandle(parent, path, &r);
1907 if (ACPI_SUCCESS(status)) {
1911 /* XXX Return error here? */
1912 if (status != AE_NOT_FOUND)
1914 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1915 return (AE_NOT_FOUND);
1921 * Allocate a buffer with a preset data size.
1924 acpi_AllocBuffer(int size)
1928 if ((buf = kmalloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
1931 buf->Pointer = (void *)(buf + 1);
1936 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
1939 ACPI_OBJECT_LIST args;
1941 arg1.Type = ACPI_TYPE_INTEGER;
1942 arg1.Integer.Value = number;
1944 args.Pointer = &arg1;
1946 return (AcpiEvaluateObject(handle, path, &args, NULL));
1950 * Evaluate a path that should return an integer.
1953 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
1960 handle = ACPI_ROOT_OBJECT;
1963 * Assume that what we've been pointed at is an Integer object, or
1964 * a method that will return an Integer.
1966 buf.Pointer = ¶m;
1967 buf.Length = sizeof(param);
1968 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1969 if (ACPI_SUCCESS(status)) {
1970 if (param.Type == ACPI_TYPE_INTEGER)
1971 *number = param.Integer.Value;
1977 * In some applications, a method that's expected to return an Integer
1978 * may instead return a Buffer (probably to simplify some internal
1979 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1980 * convert it into an Integer as best we can.
1984 if (status == AE_BUFFER_OVERFLOW) {
1985 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
1986 status = AE_NO_MEMORY;
1988 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1989 if (ACPI_SUCCESS(status))
1990 status = acpi_ConvertBufferToInteger(&buf, number);
1991 AcpiOsFree(buf.Pointer);
1998 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2004 p = (ACPI_OBJECT *)bufp->Pointer;
2005 if (p->Type == ACPI_TYPE_INTEGER) {
2006 *number = p->Integer.Value;
2009 if (p->Type != ACPI_TYPE_BUFFER)
2011 if (p->Buffer.Length > sizeof(int))
2012 return (AE_BAD_DATA);
2015 val = p->Buffer.Pointer;
2016 for (i = 0; i < p->Buffer.Length; i++)
2017 *number += val[i] << (i * 8);
2022 * Iterate over the elements of an a package object, calling the supplied
2023 * function for each element.
2025 * XXX possible enhancement might be to abort traversal on error.
2028 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2029 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2034 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2035 return (AE_BAD_PARAMETER);
2037 /* Iterate over components */
2039 comp = pkg->Package.Elements;
2040 for (; i < pkg->Package.Count; i++, comp++)
2047 * Find the (index)th resource object in a set.
2050 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2055 rp = (ACPI_RESOURCE *)buf->Pointer;
2059 if (rp > (ACPI_RESOURCE *)((uint8_t *)buf->Pointer + buf->Length))
2060 return (AE_BAD_PARAMETER);
2062 /* Check for terminator */
2063 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2064 return (AE_NOT_FOUND);
2065 rp = ACPI_NEXT_RESOURCE(rp);
2074 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2076 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2077 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2078 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2081 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2084 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2089 /* Initialise the buffer if necessary. */
2090 if (buf->Pointer == NULL) {
2091 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2092 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2093 return (AE_NO_MEMORY);
2094 rp = (ACPI_RESOURCE *)buf->Pointer;
2095 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2102 * Scan the current buffer looking for the terminator.
2103 * This will either find the terminator or hit the end
2104 * of the buffer and return an error.
2106 rp = (ACPI_RESOURCE *)buf->Pointer;
2108 /* Range check, don't go outside the buffer */
2109 if (rp >= (ACPI_RESOURCE *)((uint8_t *)buf->Pointer + buf->Length))
2110 return (AE_BAD_PARAMETER);
2111 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2113 rp = ACPI_NEXT_RESOURCE(rp);
2117 * Check the size of the buffer and expand if required.
2120 * size of existing resources before terminator +
2121 * size of new resource and header +
2122 * size of terminator.
2124 * Note that this loop should really only run once, unless
2125 * for some reason we are stuffing a *really* huge resource.
2127 while ((((uint8_t *)rp - (uint8_t *)buf->Pointer) +
2128 res->Length + ACPI_RS_SIZE_NO_DATA +
2129 ACPI_RS_SIZE_MIN) >= buf->Length) {
2130 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2131 return (AE_NO_MEMORY);
2132 bcopy(buf->Pointer, newp, buf->Length);
2133 rp = (ACPI_RESOURCE *)((uint8_t *)newp +
2134 ((uint8_t *)rp - (uint8_t *)buf->Pointer));
2135 AcpiOsFree(buf->Pointer);
2136 buf->Pointer = newp;
2137 buf->Length += buf->Length;
2140 /* Insert the new resource. */
2141 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2143 /* And add the terminator. */
2144 rp = ACPI_NEXT_RESOURCE(rp);
2145 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2152 * Set interrupt model.
2155 acpi_SetIntrModel(int model)
2158 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2162 * DEPRECATED. This interface has serious deficiencies and will be
2165 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2166 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2169 acpi_SetSleepState(struct acpi_softc *sc, int state)
2175 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2178 return (acpi_EnterSleepState(sc, state));
2182 acpi_sleep_force(void *arg)
2184 struct acpi_softc *sc;
2186 kprintf("acpi: suspend request timed out, forcing sleep now\n");
2188 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2189 kprintf("acpi: force sleep state S%d failed\n", sc->acpi_next_sstate);
2193 * Request that the system enter the given suspend state. All /dev/apm
2194 * devices and devd(8) will be notified. Userland then has a chance to
2195 * save state and acknowledge the request. The system sleeps once all
2199 acpi_ReqSleepState(struct acpi_softc *sc, int state)
2202 struct apm_clone_data *clone;
2205 if (state < ACPI_STATE_S1 || state > ACPI_STATE_S5)
2208 /* S5 (soft-off) should be entered directly with no waiting. */
2209 if (state == ACPI_STATE_S5) {
2210 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, state)))
2216 #if !defined(__i386__)
2217 /* This platform does not support acpi suspend/resume. */
2218 return (EOPNOTSUPP);
2221 /* If a suspend request is already in progress, just return. */
2223 if (sc->acpi_next_sstate != 0) {
2228 /* Record the pending state and notify all apm devices. */
2229 sc->acpi_next_sstate = state;
2231 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2232 clone->notify_status = APM_EV_NONE;
2233 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
2234 KNOTE(&clone->sel_read.si_note, 0);
2239 /* If devd(8) is not running, immediately enter the sleep state. */
2240 if (devctl_process_running() == FALSE) {
2242 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) {
2249 /* Now notify devd(8) also. */
2250 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2253 * Set a timeout to fire if userland doesn't ack the suspend request
2254 * in time. This way we still eventually go to sleep if we were
2255 * overheating or running low on battery, even if userland is hung.
2256 * We cancel this timeout once all userland acks are in or the
2257 * suspend request is aborted.
2259 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2265 * Acknowledge (or reject) a pending sleep state. The caller has
2266 * prepared for suspend and is now ready for it to proceed. If the
2267 * error argument is non-zero, it indicates suspend should be cancelled
2268 * and gives an errno value describing why. Once all votes are in,
2269 * we suspend the system.
2272 acpi_AckSleepState(struct apm_clone_data *clone, int error)
2274 struct acpi_softc *sc;
2277 #if !defined(__i386__)
2278 /* This platform does not support acpi suspend/resume. */
2279 return (EOPNOTSUPP);
2282 /* If no pending sleep state, return an error. */
2284 sc = clone->acpi_sc;
2285 if (sc->acpi_next_sstate == 0) {
2290 /* Caller wants to abort suspend process. */
2292 sc->acpi_next_sstate = 0;
2293 callout_stop(&sc->susp_force_to);
2294 kprintf("acpi: listener on %s cancelled the pending suspend\n",
2295 devtoname(clone->cdev));
2301 * Mark this device as acking the suspend request. Then, walk through
2302 * all devices, seeing if they agree yet. We only count devices that
2303 * are writable since read-only devices couldn't ack the request.
2305 clone->notify_status = APM_EV_ACKED;
2307 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2308 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2309 clone->notify_status != APM_EV_ACKED) {
2315 /* If all devices have voted "yes", we will suspend now. */
2317 callout_stop(&sc->susp_force_to);
2321 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2329 acpi_sleep_enable(void *arg)
2331 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
2334 enum acpi_sleep_state {
2337 ACPI_SS_DEV_SUSPEND,
2343 * Enter the desired system sleep state.
2345 * Currently we support S1-S5 but S4 is only S4BIOS
2348 acpi_EnterSleepState(struct acpi_softc *sc, int state)
2353 enum acpi_sleep_state slp_state;
2355 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2357 /* Re-entry once we're suspending is not allowed. */
2360 if (sc->acpi_sleep_disabled) {
2362 kprintf("acpi: suspend request ignored (not ready yet)\n");
2365 sc->acpi_sleep_disabled = 1;
2369 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2370 * drivers need this.
2373 slp_state = ACPI_SS_NONE;
2379 status = AcpiGetSleepTypeData(state, &TypeA, &TypeB);
2380 if (status == AE_NOT_FOUND) {
2381 device_printf(sc->acpi_dev,
2382 "Sleep state S%d not supported by BIOS\n", state);
2384 } else if (ACPI_FAILURE(status)) {
2385 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
2386 AcpiFormatException(status));
2390 sc->acpi_sstate = state;
2392 /* Enable any GPEs as appropriate and requested by the user. */
2393 acpi_wake_prep_walk(state);
2394 slp_state = ACPI_SS_GPE_SET;
2397 * Inform all devices that we are going to sleep. If at least one
2398 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2400 * XXX Note that a better two-pass approach with a 'veto' pass
2401 * followed by a "real thing" pass would be better, but the current
2402 * bus interface does not provide for this.
2404 if (DEVICE_SUSPEND(root_bus) != 0) {
2405 device_printf(sc->acpi_dev, "device_suspend failed\n");
2408 slp_state = ACPI_SS_DEV_SUSPEND;
2410 /* If testing device suspend only, back out of everything here. */
2411 if (acpi_susp_bounce)
2414 status = AcpiEnterSleepStatePrep(state);
2415 if (ACPI_FAILURE(status)) {
2416 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2417 AcpiFormatException(status));
2420 slp_state = ACPI_SS_SLP_PREP;
2422 if (sc->acpi_sleep_delay > 0)
2423 DELAY(sc->acpi_sleep_delay * 1000000);
2425 if (state != ACPI_STATE_S1) {
2426 acpi_sleep_machdep(sc, state);
2428 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2429 if (state == ACPI_STATE_S4)
2432 ACPI_DISABLE_IRQS();
2433 status = AcpiEnterSleepState(state);
2434 if (ACPI_FAILURE(status)) {
2435 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2436 AcpiFormatException(status));
2440 slp_state = ACPI_SS_SLEPT;
2444 * Shut down cleanly and power off. This will call us back through the
2445 * shutdown handlers.
2447 shutdown_nice(RB_POWEROFF);
2451 status = AE_BAD_PARAMETER;
2456 * Back out state according to how far along we got in the suspend
2457 * process. This handles both the error and success cases.
2459 sc->acpi_next_sstate = 0;
2460 if (slp_state >= ACPI_SS_GPE_SET) {
2461 acpi_wake_prep_walk(state);
2462 sc->acpi_sstate = ACPI_STATE_S0;
2464 if (slp_state >= ACPI_SS_SLP_PREP)
2465 AcpiLeaveSleepState(state);
2466 if (slp_state >= ACPI_SS_DEV_SUSPEND)
2467 DEVICE_RESUME(root_bus);
2468 if (slp_state >= ACPI_SS_SLEPT)
2469 acpi_enable_fixed_events(sc);
2471 /* Allow another sleep request after a while. */
2472 /* XXX: needs timeout */
2473 if (state != ACPI_STATE_S5)
2474 acpi_sleep_enable(sc);
2476 /* Run /etc/rc.resume after we are back. */
2477 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2480 return_ACPI_STATUS (status);
2483 /* Enable or disable the device's GPE. */
2485 acpi_wake_set_enable(device_t dev, int enable)
2487 struct acpi_prw_data prw;
2491 /* Make sure the device supports waking the system and get the GPE. */
2492 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2495 flags = acpi_get_flags(dev);
2497 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
2499 if (ACPI_FAILURE(status)) {
2500 device_printf(dev, "enable wake failed\n");
2503 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2505 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
2507 if (ACPI_FAILURE(status)) {
2508 device_printf(dev, "disable wake failed\n");
2511 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2518 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
2520 struct acpi_prw_data prw;
2523 /* Check that this is a wake-capable device and get its GPE. */
2524 if (acpi_parse_prw(handle, &prw) != 0)
2526 dev = acpi_get_device(handle);
2529 * The destination sleep state must be less than (i.e., higher power)
2530 * or equal to the value specified by _PRW. If this GPE cannot be
2531 * enabled for the next sleep state, then disable it. If it can and
2532 * the user requested it be enabled, turn on any required power resources
2535 if (sstate > prw.lowest_wake) {
2536 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
2538 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2539 acpi_name(handle), sstate);
2540 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2541 acpi_pwr_wake_enable(handle, 1);
2542 acpi_SetInteger(handle, "_PSW", 1);
2544 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2545 acpi_name(handle), sstate);
2552 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
2554 struct acpi_prw_data prw;
2558 * Check that this is a wake-capable device and get its GPE. Return
2559 * now if the user didn't enable this device for wake.
2561 if (acpi_parse_prw(handle, &prw) != 0)
2563 dev = acpi_get_device(handle);
2564 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2568 * If this GPE couldn't be enabled for the previous sleep state, it was
2569 * disabled before going to sleep so re-enable it. If it was enabled,
2570 * clear _PSW and turn off any power resources it used.
2572 if (sstate > prw.lowest_wake) {
2573 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
2575 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2577 acpi_SetInteger(handle, "_PSW", 0);
2578 acpi_pwr_wake_enable(handle, 0);
2580 device_printf(dev, "run_prep cleaned up for %s\n",
2588 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
2592 /* If suspending, run the sleep prep function, otherwise wake. */
2593 sstate = *(int *)context;
2594 if (AcpiGbl_SystemAwakeAndRunning)
2595 acpi_wake_sleep_prep(handle, sstate);
2597 acpi_wake_run_prep(handle, sstate);
2601 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2603 acpi_wake_prep_walk(int sstate)
2605 ACPI_HANDLE sb_handle;
2607 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) {
2608 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
2609 acpi_wake_prep, NULL, &sstate, NULL);
2614 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2616 acpi_wake_sysctl_walk(device_t dev)
2619 int error, i, numdevs;
2624 error = device_get_children(dev, &devlist, &numdevs);
2625 if (error != 0 || numdevs == 0) {
2627 kfree(devlist, M_TEMP);
2630 for (i = 0; i < numdevs; i++) {
2632 acpi_wake_sysctl_walk(child);
2633 if (!device_is_attached(child))
2635 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
2636 if (ACPI_SUCCESS(status)) {
2637 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
2638 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
2639 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
2640 acpi_wake_set_sysctl, "I", "Device set to wake the system");
2643 kfree(devlist, M_TEMP);
2650 /* Enable or disable wake from userland. */
2652 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2657 dev = (device_t)arg1;
2658 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
2660 error = sysctl_handle_int(oidp, &enable, 0, req);
2661 if (error != 0 || req->newptr == NULL)
2663 if (enable != 0 && enable != 1)
2666 return (acpi_wake_set_enable(dev, enable));
2670 /* Parse a device's _PRW into a structure. */
2672 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2675 ACPI_BUFFER prw_buffer;
2676 ACPI_OBJECT *res, *res2;
2677 int error, i, power_count;
2679 if (h == NULL || prw == NULL)
2683 * The _PRW object (7.2.9) is only required for devices that have the
2684 * ability to wake the system from a sleeping state.
2687 prw_buffer.Pointer = NULL;
2688 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2689 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2690 if (ACPI_FAILURE(status))
2692 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2695 if (!ACPI_PKG_VALID(res, 2))
2699 * Element 1 of the _PRW object:
2700 * The lowest power system sleeping state that can be entered while still
2701 * providing wake functionality. The sleeping state being entered must
2702 * be less than (i.e., higher power) or equal to this value.
2704 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2708 * Element 0 of the _PRW object:
2710 switch (res->Package.Elements[0].Type) {
2711 case ACPI_TYPE_INTEGER:
2713 * If the data type of this package element is numeric, then this
2714 * _PRW package element is the bit index in the GPEx_EN, in the
2715 * GPE blocks described in the FADT, of the enable bit that is
2716 * enabled for the wake event.
2718 prw->gpe_handle = NULL;
2719 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2722 case ACPI_TYPE_PACKAGE:
2724 * If the data type of this package element is a package, then this
2725 * _PRW package element is itself a package containing two
2726 * elements. The first is an object reference to the GPE Block
2727 * device that contains the GPE that will be triggered by the wake
2728 * event. The second element is numeric and it contains the bit
2729 * index in the GPEx_EN, in the GPE Block referenced by the
2730 * first element in the package, of the enable bit that is enabled for
2733 * For example, if this field is a package then it is of the form:
2734 * Package() {\_SB.PCI0.ISA.GPE, 2}
2736 res2 = &res->Package.Elements[0];
2737 if (!ACPI_PKG_VALID(res2, 2))
2739 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2740 if (prw->gpe_handle == NULL)
2742 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2750 /* Elements 2 to N of the _PRW object are power resources. */
2751 power_count = res->Package.Count - 2;
2752 if (power_count > ACPI_PRW_MAX_POWERRES) {
2753 kprintf("ACPI device %s has too many power resources\n", acpi_name(h));
2756 prw->power_res_count = power_count;
2757 for (i = 0; i < power_count; i++)
2758 prw->power_res[i] = res->Package.Elements[i];
2761 if (prw_buffer.Pointer != NULL)
2762 AcpiOsFree(prw_buffer.Pointer);
2767 * ACPI Event Handlers
2770 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2773 acpi_system_eventhandler_sleep(void *arg, int state)
2777 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2779 /* Check if button action is disabled. */
2780 if (state == ACPI_S_STATES_MAX + 1)
2783 /* Request that the system prepare to enter the given suspend state. */
2784 ret = acpi_ReqSleepState((struct acpi_softc *)arg, state);
2786 kprintf("acpi: request to enter state S%d failed (err %d)\n",
2793 acpi_system_eventhandler_wakeup(void *arg, int state)
2796 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2798 /* Currently, nothing to do for wakeup. */
2804 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2807 acpi_event_power_button_sleep(void *context)
2809 struct acpi_softc *sc = (struct acpi_softc *)context;
2811 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2813 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2815 return_VALUE (ACPI_INTERRUPT_HANDLED);
2819 acpi_event_power_button_wake(void *context)
2821 struct acpi_softc *sc = (struct acpi_softc *)context;
2823 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2825 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2827 return_VALUE (ACPI_INTERRUPT_HANDLED);
2831 acpi_event_sleep_button_sleep(void *context)
2833 struct acpi_softc *sc = (struct acpi_softc *)context;
2835 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2837 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2839 return_VALUE (ACPI_INTERRUPT_HANDLED);
2843 acpi_event_sleep_button_wake(void *context)
2845 struct acpi_softc *sc = (struct acpi_softc *)context;
2847 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2849 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2851 return_VALUE (ACPI_INTERRUPT_HANDLED);
2855 * XXX This static buffer is suboptimal. There is no locking so only
2856 * use this for single-threaded callers.
2859 acpi_name(ACPI_HANDLE handle)
2862 static char data[256];
2864 buf.Length = sizeof(data);
2867 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
2869 return ("(unknown)");
2873 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2874 * parts of the namespace.
2877 acpi_avoid(ACPI_HANDLE handle)
2879 char *cp, *env, *np;
2882 np = acpi_name(handle);
2885 if ((env = kgetenv("debug.acpi.avoid")) == NULL)
2888 /* Scan the avoid list checking for a match */
2891 while (*cp != 0 && isspace(*cp))
2896 while (cp[len] != 0 && !isspace(cp[len]))
2898 if (!strncmp(cp, np, len)) {
2910 * Debugging/bug-avoidance. Disable ACPI subsystem components.
2913 acpi_disabled(char *subsys)
2918 if ((env = kgetenv("debug.acpi.disabled")) == NULL)
2920 if (strcmp(env, "all") == 0) {
2925 /* Scan the disable list, checking for a match. */
2928 while (*cp != '\0' && isspace(*cp))
2933 while (cp[len] != '\0' && !isspace(cp[len]))
2935 if (strncmp(cp, subsys, len) == 0) {
2947 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
2948 * components are enabled by default. The ones that are not have to be
2949 * enabled via debug.acpi.enabled.
2952 acpi_enabled(char *subsys)
2957 if ((env = kgetenv("debug.acpi.enabled")) == NULL)
2959 if (strcmp(env, "all") == 0) {
2964 /* Scan the enable list, checking for a match. */
2967 while (*cp != '\0' && isspace(*cp))
2972 while (cp[len] != '\0' && !isspace(cp[len]))
2974 if (strncmp(cp, subsys, len) == 0) {
2986 * Control interface.
2988 * We multiplex ioctls for all participating ACPI devices here. Individual
2989 * drivers wanting to be accessible via /dev/acpi should use the
2990 * register/deregister interface to make their handlers visible.
2992 struct acpi_ioctl_hook
2994 TAILQ_ENTRY(acpi_ioctl_hook) link;
3000 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
3001 static int acpi_ioctl_hooks_initted;
3004 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
3006 struct acpi_ioctl_hook *hp;
3008 if ((hp = kmalloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
3015 if (acpi_ioctl_hooks_initted == 0) {
3016 TAILQ_INIT(&acpi_ioctl_hooks);
3017 acpi_ioctl_hooks_initted = 1;
3019 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
3026 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
3028 struct acpi_ioctl_hook *hp;
3031 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
3032 if (hp->cmd == cmd && hp->fn == fn)
3036 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
3037 kfree(hp, M_ACPIDEV);
3043 acpiopen(struct dev_open_args *ap)
3049 acpiclose(struct dev_close_args *ap)
3055 acpiioctl(struct dev_ioctl_args *ap)
3057 struct acpi_softc *sc;
3058 struct acpi_ioctl_hook *hp;
3063 sc = ap->a_head.a_dev->si_drv1;
3066 * Scan the list of registered ioctls, looking for handlers.
3069 if (acpi_ioctl_hooks_initted)
3070 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3071 if (hp->cmd == ap->a_cmd)
3076 return (hp->fn(ap->a_cmd, ap->a_data, hp->arg));
3079 * Core ioctls are not permitted for non-writable user.
3080 * Currently, other ioctls just fetch information.
3081 * Not changing system behavior.
3083 if ((ap->a_fflag & FWRITE) == 0)
3086 /* Core system ioctls. */
3087 switch (ap->a_cmd) {
3088 case ACPIIO_REQSLPSTATE:
3089 state = *(int *)ap->a_data;
3090 if (state != ACPI_STATE_S5)
3091 error = acpi_ReqSleepState(sc, state);
3093 kprintf("power off via acpi ioctl not supported\n");
3097 case ACPIIO_ACKSLPSTATE:
3100 error = *(int *)ap->a_data;
3101 error = acpi_AckSleepState(sc->acpi_clone, error);
3104 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3106 state = *(int *)ap->a_data;
3107 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
3108 if (ACPI_SUCCESS(acpi_SetSleepState(sc, state)))
3119 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3123 UINT8 state, TypeA, TypeB;
3125 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3126 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++)
3127 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
3128 sbuf_printf(&sb, "S%d ", state);
3131 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3137 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3139 char sleep_state[10];
3141 u_int new_state, old_state;
3143 old_state = *(u_int *)oidp->oid_arg1;
3144 if (old_state > ACPI_S_STATES_MAX + 1)
3145 strlcpy(sleep_state, "unknown", sizeof(sleep_state));
3147 strlcpy(sleep_state, sleep_state_names[old_state], sizeof(sleep_state));
3148 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3149 if (error == 0 && req->newptr != NULL) {
3150 new_state = ACPI_STATE_S0;
3151 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++)
3152 if (strcmp(sleep_state, sleep_state_names[new_state]) == 0)
3154 if (new_state <= ACPI_S_STATES_MAX + 1) {
3155 if (new_state != old_state)
3156 *(u_int *)oidp->oid_arg1 = new_state;
3164 /* Inform devctl(4) when we receive a Notify. */
3166 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3168 char notify_buf[16];
3169 ACPI_BUFFER handle_buf;
3172 if (subsystem == NULL)
3175 handle_buf.Pointer = NULL;
3176 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3177 status = AcpiNsHandleToPathname(h, &handle_buf);
3178 if (ACPI_FAILURE(status))
3180 ksnprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
3181 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
3182 AcpiOsFree(handle_buf.Pointer);
3187 * Support for parsing debug options from the kernel environment.
3189 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3190 * by specifying the names of the bits in the debug.acpi.layer and
3191 * debug.acpi.level environment variables. Bits may be unset by
3192 * prefixing the bit name with !.
3200 static struct debugtag dbg_layer[] = {
3201 {"ACPI_UTILITIES", ACPI_UTILITIES},
3202 {"ACPI_HARDWARE", ACPI_HARDWARE},
3203 {"ACPI_EVENTS", ACPI_EVENTS},
3204 {"ACPI_TABLES", ACPI_TABLES},
3205 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3206 {"ACPI_PARSER", ACPI_PARSER},
3207 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3208 {"ACPI_EXECUTER", ACPI_EXECUTER},
3209 {"ACPI_RESOURCES", ACPI_RESOURCES},
3210 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3211 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3212 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3213 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3215 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3216 {"ACPI_BATTERY", ACPI_BATTERY},
3217 {"ACPI_BUS", ACPI_BUS},
3218 {"ACPI_BUTTON", ACPI_BUTTON},
3219 {"ACPI_EC", ACPI_EC},
3220 {"ACPI_FAN", ACPI_FAN},
3221 {"ACPI_POWERRES", ACPI_POWERRES},
3222 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3223 {"ACPI_THERMAL", ACPI_THERMAL},
3224 {"ACPI_TIMER", ACPI_TIMER},
3225 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3229 static struct debugtag dbg_level[] = {
3230 {"ACPI_LV_INIT", ACPI_LV_INIT},
3231 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3232 {"ACPI_LV_INFO", ACPI_LV_INFO},
3233 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR},
3234 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3236 /* Trace verbosity level 1 [Standard Trace Level] */
3237 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3238 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3239 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3240 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3241 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3242 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3243 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3244 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3245 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3246 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3247 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3248 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3249 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3250 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3251 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3253 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3254 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3255 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3256 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3257 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3258 {"ACPI_LV_ALL", ACPI_LV_ALL},
3260 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3261 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3262 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3263 {"ACPI_LV_IO", ACPI_LV_IO},
3264 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3265 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3267 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3268 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
3269 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
3270 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
3271 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
3272 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
3277 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
3289 while (*ep && !isspace(*ep))
3300 for (i = 0; tag[i].name != NULL; i++) {
3301 if (!strncmp(cp, tag[i].name, l)) {
3303 *flag |= tag[i].value;
3305 *flag &= ~tag[i].value;
3313 acpi_set_debugging(void *junk)
3315 char *layer, *level;
3322 layer = kgetenv("debug.acpi.layer");
3323 level = kgetenv("debug.acpi.level");
3324 if (layer == NULL && level == NULL)
3327 kprintf("ACPI set debug");
3328 if (layer != NULL) {
3329 if (strcmp("NONE", layer) != 0)
3330 kprintf(" layer '%s'", layer);
3331 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
3334 if (level != NULL) {
3335 if (strcmp("NONE", level) != 0)
3336 kprintf(" level '%s'", level);
3337 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
3343 SYSINIT(acpi_debugging, SI_BOOT1_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3347 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
3350 struct debugtag *tag;
3353 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
3355 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
3356 tag = &dbg_layer[0];
3357 dbg = &AcpiDbgLayer;
3359 tag = &dbg_level[0];
3360 dbg = &AcpiDbgLevel;
3363 /* Get old values if this is a get request. */
3364 ACPI_SERIAL_BEGIN(acpi);
3366 sbuf_cpy(&sb, "NONE");
3367 } else if (req->newptr == NULL) {
3368 for (; tag->name != NULL; tag++) {
3369 if ((*dbg & tag->value) == tag->value)
3370 sbuf_printf(&sb, "%s ", tag->name);
3376 /* Copy out the old values to the user. */
3377 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
3380 /* If the user is setting a string, parse it. */
3381 if (error == 0 && req->newptr != NULL) {
3383 ksetenv((char *)oidp->oid_arg1, (char *)req->newptr);
3384 acpi_set_debugging(NULL);
3386 ACPI_SERIAL_END(acpi);
3391 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
3392 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
3393 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
3394 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3395 #endif /* ACPI_DEBUG */
3398 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS)
3403 old = acpi_debug_objects;
3404 error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req);
3405 if (error != 0 || req->newptr == NULL)
3407 if (old == acpi_debug_objects || (old && acpi_debug_objects))
3410 ACPI_SERIAL_BEGIN(acpi);
3411 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
3412 ACPI_SERIAL_END(acpi);
3418 acpi_pm_func(u_long cmd, void *arg, ...)
3420 int state, acpi_state;
3422 struct acpi_softc *sc;
3427 case POWER_CMD_SUSPEND:
3428 sc = (struct acpi_softc *)arg;
3435 state = va_arg(ap, int);
3439 case POWER_SLEEP_STATE_STANDBY:
3440 acpi_state = sc->acpi_standby_sx;
3442 case POWER_SLEEP_STATE_SUSPEND:
3443 acpi_state = sc->acpi_suspend_sx;
3445 case POWER_SLEEP_STATE_HIBERNATE:
3446 acpi_state = ACPI_STATE_S4;
3453 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
3466 acpi_pm_register(void *arg)
3468 if (!cold || resource_disabled("acpi", 0))
3471 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3474 SYSINIT(power, SI_BOOT2_KLD, SI_ORDER_ANY, acpi_pm_register, 0);