2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
4 * Copyright (c) 2000, 2001 Michael Smith
5 * Copyright (c) 2000 BSDi
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
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>
51 #if defined(__i386__) || defined(__amd64__)
52 #include <machine/pci_cfgreg.h>
54 #include <machine/resource.h>
55 #include <machine/bus.h>
57 #include <isa/isavar.h>
58 #include <isa/pnpvar.h>
60 #include <contrib/dev/acpica/acpi.h>
61 #include <dev/acpica/acpivar.h>
62 #include <dev/acpica/acpiio.h>
63 #include <contrib/dev/acpica/achware.h>
64 #include <contrib/dev/acpica/acnamesp.h>
67 #include <dev/pci/pcivar.h>
68 #include <dev/pci/pci_private.h>
70 #include <vm/vm_param.h>
72 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
74 /* Hooks for the ACPI CA debugging infrastructure */
75 #define _COMPONENT ACPI_BUS
76 ACPI_MODULE_NAME("ACPI")
78 static d_open_t acpiopen;
79 static d_close_t acpiclose;
80 static d_ioctl_t acpiioctl;
82 static struct cdevsw acpi_cdevsw = {
83 .d_version = D_VERSION,
90 /* Global mutex for locking access to the ACPI subsystem. */
91 struct mtx acpi_mutex;
93 /* Bitmap of device quirks. */
96 static int acpi_modevent(struct module *mod, int event, void *junk);
97 static int acpi_probe(device_t dev);
98 static int acpi_attach(device_t dev);
99 static int acpi_suspend(device_t dev);
100 static int acpi_resume(device_t dev);
101 static int acpi_shutdown(device_t dev);
102 static device_t acpi_add_child(device_t bus, int order, const char *name,
104 static int acpi_print_child(device_t bus, device_t child);
105 static void acpi_probe_nomatch(device_t bus, device_t child);
106 static void acpi_driver_added(device_t dev, driver_t *driver);
107 static int acpi_read_ivar(device_t dev, device_t child, int index,
109 static int acpi_write_ivar(device_t dev, device_t child, int index,
111 static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
112 static int acpi_sysres_alloc(device_t dev);
113 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
114 int type, int *rid, u_long start, u_long end,
115 u_long count, u_int flags);
116 static int acpi_release_resource(device_t bus, device_t child, int type,
117 int rid, struct resource *r);
118 static void acpi_delete_resource(device_t bus, device_t child, int type,
120 static uint32_t acpi_isa_get_logicalid(device_t dev);
121 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
122 static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
123 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
124 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
126 static int acpi_device_pwr_for_sleep(device_t bus, device_t dev,
128 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
129 void *context, void **retval);
130 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
131 int max_depth, acpi_scan_cb_t user_fn, void *arg);
132 static int acpi_set_powerstate_method(device_t bus, device_t child,
134 static int acpi_isa_pnp_probe(device_t bus, device_t child,
135 struct isa_pnp_id *ids);
136 static void acpi_probe_children(device_t bus);
137 static void acpi_probe_order(ACPI_HANDLE handle, int *order);
138 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
139 void *context, void **status);
140 static BOOLEAN acpi_MatchHid(ACPI_HANDLE h, const char *hid);
141 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
142 static void acpi_shutdown_final(void *arg, int howto);
143 static void acpi_enable_fixed_events(struct acpi_softc *sc);
144 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
145 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
146 static int acpi_wake_prep_walk(int sstate);
147 static int acpi_wake_sysctl_walk(device_t dev);
148 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
149 static void acpi_system_eventhandler_sleep(void *arg, int state);
150 static void acpi_system_eventhandler_wakeup(void *arg, int state);
151 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
152 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
153 static int acpi_pm_func(u_long cmd, void *arg, ...);
154 static int acpi_child_location_str_method(device_t acdev, device_t child,
155 char *buf, size_t buflen);
156 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
157 char *buf, size_t buflen);
158 #if defined(__i386__) || defined(__amd64__)
159 static void acpi_enable_pcie(void);
162 static device_method_t acpi_methods[] = {
163 /* Device interface */
164 DEVMETHOD(device_probe, acpi_probe),
165 DEVMETHOD(device_attach, acpi_attach),
166 DEVMETHOD(device_shutdown, acpi_shutdown),
167 DEVMETHOD(device_detach, bus_generic_detach),
168 DEVMETHOD(device_suspend, acpi_suspend),
169 DEVMETHOD(device_resume, acpi_resume),
172 DEVMETHOD(bus_add_child, acpi_add_child),
173 DEVMETHOD(bus_print_child, acpi_print_child),
174 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
175 DEVMETHOD(bus_driver_added, acpi_driver_added),
176 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
177 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
178 DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
179 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
180 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
181 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
182 DEVMETHOD(bus_release_resource, acpi_release_resource),
183 DEVMETHOD(bus_delete_resource, acpi_delete_resource),
184 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
185 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
186 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
187 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
188 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
189 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
192 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
193 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
194 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
195 DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
198 DEVMETHOD(pci_set_powerstate, acpi_set_powerstate_method),
201 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
206 static driver_t acpi_driver = {
209 sizeof(struct acpi_softc),
212 static devclass_t acpi_devclass;
213 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
214 MODULE_VERSION(acpi, 1);
216 ACPI_SERIAL_DECL(acpi, "ACPI root bus");
218 /* Local pools for managing system resources for ACPI child devices. */
219 static struct rman acpi_rman_io, acpi_rman_mem;
221 #define ACPI_MINIMUM_AWAKETIME 5
223 static const char* sleep_state_names[] = {
224 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
226 /* Holds the description of the acpi0 device. */
227 static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
229 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
230 static char acpi_ca_version[12];
231 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
232 acpi_ca_version, 0, "Version of Intel ACPI-CA");
235 * Allow override of whether methods execute in parallel or not.
236 * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
237 * errors for AML that really can't handle parallel method execution.
238 * It is off by default since this breaks recursive methods and
239 * some IBMs use such code.
241 static int acpi_serialize_methods;
242 TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
244 /* Power devices off and on in suspend and resume. XXX Remove once tested. */
245 static int acpi_do_powerstate = 1;
246 TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate);
247 SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW,
248 &acpi_do_powerstate, 1, "Turn off devices when suspending.");
250 /* Allow users to override quirks. */
251 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
253 static int acpi_susp_bounce;
254 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
255 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
258 * ACPI can only be loaded as a module by the loader; activating it after
259 * system bootstrap time is not useful, and can be fatal to the system.
260 * It also cannot be unloaded, since the entire system bus hierarchy hangs
264 acpi_modevent(struct module *mod, int event, void *junk)
269 printf("The ACPI driver cannot be loaded after boot.\n");
274 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
284 * Perform early initialization.
289 static int started = 0;
293 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
295 /* Only run the startup code once. The MADT driver also calls this. */
297 return_VALUE (AE_OK);
301 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
302 * if more tables exist.
304 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
305 printf("ACPI: Table initialisation failed: %s\n",
306 AcpiFormatException(status));
307 return_VALUE (status);
310 /* Set up any quirks we have for this system. */
311 if (acpi_quirks == ACPI_Q_OK)
312 acpi_table_quirks(&acpi_quirks);
314 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
315 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
316 acpi_quirks &= ~ACPI_Q_BROKEN;
317 if (acpi_quirks & ACPI_Q_BROKEN) {
318 printf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
322 return_VALUE (status);
326 * Detect ACPI and perform early initialisation.
331 ACPI_TABLE_RSDP *rsdp;
332 ACPI_TABLE_HEADER *rsdt;
333 ACPI_PHYSICAL_ADDRESS paddr;
336 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
341 /* Check that we haven't been disabled with a hint. */
342 if (resource_disabled("acpi", 0))
345 /* Check for other PM systems. */
346 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
347 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
348 printf("ACPI identify failed, other PM system enabled.\n");
352 /* Initialize root tables. */
353 if (ACPI_FAILURE(acpi_Startup())) {
354 printf("ACPI: Try disabling either ACPI or apic support.\n");
358 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
359 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
361 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
362 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
364 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
365 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
367 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
369 sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN);
370 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
373 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
377 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
379 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
385 * Fetch some descriptive data from ACPI to put in our attach message.
388 acpi_probe(device_t dev)
391 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
393 device_set_desc(dev, acpi_desc);
399 acpi_attach(device_t dev)
401 struct acpi_softc *sc;
402 ACPI_TABLE_FACS *facs;
409 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
411 sc = device_get_softc(dev);
413 callout_init(&sc->susp_force_to, TRUE);
417 /* Initialize resource manager. */
418 acpi_rman_io.rm_type = RMAN_ARRAY;
419 acpi_rman_io.rm_start = 0;
420 acpi_rman_io.rm_end = 0xffff;
421 acpi_rman_io.rm_descr = "ACPI I/O ports";
422 if (rman_init(&acpi_rman_io) != 0)
423 panic("acpi rman_init IO ports failed");
424 acpi_rman_mem.rm_type = RMAN_ARRAY;
425 acpi_rman_mem.rm_start = 0;
426 acpi_rman_mem.rm_end = ~0ul;
427 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
428 if (rman_init(&acpi_rman_mem) != 0)
429 panic("acpi rman_init memory failed");
431 /* Initialise the ACPI mutex */
432 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
435 * Set the globals from our tunables. This is needed because ACPI-CA
436 * uses UINT8 for some values and we have no tunable_byte.
438 AcpiGbl_AllMethodsSerialized = acpi_serialize_methods;
439 AcpiGbl_EnableInterpreterSlack = TRUE;
441 /* Start up the ACPI CA subsystem. */
442 status = AcpiInitializeSubsystem();
443 if (ACPI_FAILURE(status)) {
444 device_printf(dev, "Could not initialize Subsystem: %s\n",
445 AcpiFormatException(status));
449 /* Load ACPI name space. */
450 status = AcpiLoadTables();
451 if (ACPI_FAILURE(status)) {
452 device_printf(dev, "Could not load Namespace: %s\n",
453 AcpiFormatException(status));
457 #if defined(__i386__) || defined(__amd64__)
458 /* Handle MCFG table if present. */
462 /* Install the default address space handlers. */
463 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
464 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
465 if (ACPI_FAILURE(status)) {
466 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
467 AcpiFormatException(status));
470 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
471 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
472 if (ACPI_FAILURE(status)) {
473 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
474 AcpiFormatException(status));
477 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
478 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
479 if (ACPI_FAILURE(status)) {
480 device_printf(dev, "could not initialise PciConfig handler: %s\n",
481 AcpiFormatException(status));
486 * Note that some systems (specifically, those with namespace evaluation
487 * issues that require the avoidance of parts of the namespace) must
488 * avoid running _INI and _STA on everything, as well as dodging the final
491 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
493 * XXX We should arrange for the object init pass after we have attached
494 * all our child devices, but on many systems it works here.
497 if (testenv("debug.acpi.avoid"))
498 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
500 /* Bring the hardware and basic handlers online. */
501 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
502 device_printf(dev, "Could not enable ACPI: %s\n",
503 AcpiFormatException(status));
508 * Call the ECDT probe function to provide EC functionality before
509 * the namespace has been evaluated.
511 * XXX This happens before the sysresource devices have been probed and
512 * attached so its resources come from nexus0. In practice, this isn't
513 * a problem but should be addressed eventually.
515 acpi_ec_ecdt_probe(dev);
517 /* Bring device objects and regions online. */
518 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
519 device_printf(dev, "Could not initialize ACPI objects: %s\n",
520 AcpiFormatException(status));
525 * Setup our sysctl tree.
527 * XXX: This doesn't check to make sure that none of these fail.
529 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
530 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
531 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
532 device_get_name(dev), CTLFLAG_RD, 0, "");
533 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
534 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
535 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
536 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
537 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
538 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
539 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
540 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
541 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
542 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
543 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
544 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
545 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
546 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
547 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
548 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
549 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
550 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
551 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
552 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
554 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
555 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
556 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
557 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
558 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
559 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
560 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
561 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
562 OID_AUTO, "handle_reboot", CTLFLAG_RW,
563 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
566 * Default to 1 second before sleeping to give some machines time to
569 sc->acpi_sleep_delay = 1;
571 sc->acpi_verbose = 1;
572 if ((env = getenv("hw.acpi.verbose")) != NULL) {
573 if (strcmp(env, "0") != 0)
574 sc->acpi_verbose = 1;
578 /* Only enable S4BIOS by default if the FACS says it is available. */
579 status = AcpiGetTable(ACPI_SIG_FACS, 0, (ACPI_TABLE_HEADER **)&facs);
580 if (ACPI_FAILURE(status)) {
581 device_printf(dev, "couldn't get FACS: %s\n",
582 AcpiFormatException(status));
586 if (facs->Flags & ACPI_FACS_S4_BIOS_PRESENT)
590 * Dispatch the default sleep state to devices. The lid switch is set
591 * to NONE by default to avoid surprising users.
593 sc->acpi_power_button_sx = ACPI_STATE_S5;
594 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
595 sc->acpi_standby_sx = ACPI_STATE_S1;
596 sc->acpi_suspend_sx = ACPI_STATE_S3;
598 /* Pick the first valid sleep state for the sleep button default. */
599 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
600 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
601 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
602 sc->acpi_sleep_button_sx = state;
606 acpi_enable_fixed_events(sc);
609 * Scan the namespace and attach/initialise children.
612 /* Register our shutdown handler. */
613 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
617 * Register our acpi event handlers.
618 * XXX should be configurable eg. via userland policy manager.
620 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
621 sc, ACPI_EVENT_PRI_LAST);
622 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
623 sc, ACPI_EVENT_PRI_LAST);
625 /* Flag our initial states. */
626 sc->acpi_enabled = 1;
627 sc->acpi_sstate = ACPI_STATE_S0;
628 sc->acpi_sleep_disabled = 0;
630 /* Create the control device */
631 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
633 sc->acpi_dev_t->si_drv1 = sc;
635 if ((error = acpi_machdep_init(dev)))
638 /* Register ACPI again to pass the correct argument of pm_func. */
639 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
641 if (!acpi_disabled("bus"))
642 acpi_probe_children(dev);
647 return_VALUE (error);
651 acpi_suspend(device_t dev)
653 device_t child, *devlist;
654 int error, i, numdevs, pstate;
658 /* First give child devices a chance to suspend. */
659 error = bus_generic_suspend(dev);
664 * Now, set them into the appropriate power state, usually D3. If the
665 * device has an _SxD method for the next sleep state, use that power
668 error = device_get_children(dev, &devlist, &numdevs);
671 for (i = 0; i < numdevs; i++) {
672 /* If the device is not attached, we've powered it down elsewhere. */
674 if (!device_is_attached(child))
678 * Default to D3 for all sleep states. The _SxD method is optional
679 * so set the powerstate even if it's absent.
681 pstate = PCI_POWERSTATE_D3;
682 error = acpi_device_pwr_for_sleep(device_get_parent(child),
684 if ((error == 0 || error == ESRCH) && acpi_do_powerstate)
685 pci_set_powerstate(child, pstate);
687 free(devlist, M_TEMP);
694 acpi_resume(device_t dev)
697 int i, numdevs, error;
698 device_t child, *devlist;
703 * Put all devices in D0 before resuming them. Call _S0D on each one
704 * since some systems expect this.
706 error = device_get_children(dev, &devlist, &numdevs);
709 for (i = 0; i < numdevs; i++) {
711 handle = acpi_get_handle(child);
713 AcpiEvaluateObject(handle, "_S0D", NULL, NULL);
714 if (device_is_attached(child) && acpi_do_powerstate)
715 pci_set_powerstate(child, PCI_POWERSTATE_D0);
717 free(devlist, M_TEMP);
719 return (bus_generic_resume(dev));
723 acpi_shutdown(device_t dev)
728 /* Allow children to shutdown first. */
729 bus_generic_shutdown(dev);
732 * Enable any GPEs that are able to power-on the system (i.e., RTC).
733 * Also, disable any that are not valid for this state (most).
735 acpi_wake_prep_walk(ACPI_STATE_S5);
741 * Handle a new device being added
744 acpi_add_child(device_t bus, int order, const char *name, int unit)
746 struct acpi_device *ad;
749 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
752 resource_list_init(&ad->ad_rl);
754 child = device_add_child_ordered(bus, order, name, unit);
756 device_set_ivars(child, ad);
763 acpi_print_child(device_t bus, device_t child)
765 struct acpi_device *adev = device_get_ivars(child);
766 struct resource_list *rl = &adev->ad_rl;
769 retval += bus_print_child_header(bus, child);
770 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
771 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
772 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
773 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
774 if (device_get_flags(child))
775 retval += printf(" flags %#x", device_get_flags(child));
776 retval += bus_print_child_footer(bus, child);
782 * If this device is an ACPI child but no one claimed it, attempt
783 * to power it off. We'll power it back up when a driver is added.
785 * XXX Disabled for now since many necessary devices (like fdc and
786 * ATA) don't claim the devices we created for them but still expect
787 * them to be powered up.
790 acpi_probe_nomatch(device_t bus, device_t child)
793 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
797 * If a new driver has a chance to probe a child, first power it up.
799 * XXX Disabled for now (see acpi_probe_nomatch for details).
802 acpi_driver_added(device_t dev, driver_t *driver)
804 device_t child, *devlist;
807 DEVICE_IDENTIFY(driver, dev);
808 if (device_get_children(dev, &devlist, &numdevs))
810 for (i = 0; i < numdevs; i++) {
812 if (device_get_state(child) == DS_NOTPRESENT) {
813 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
814 if (device_probe_and_attach(child) != 0)
815 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
818 free(devlist, M_TEMP);
821 /* Location hint for devctl(8) */
823 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
826 struct acpi_device *dinfo = device_get_ivars(child);
828 if (dinfo->ad_handle)
829 snprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
831 snprintf(buf, buflen, "unknown");
835 /* PnP information for devctl(8) */
837 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
840 ACPI_BUFFER adbuf = {ACPI_ALLOCATE_BUFFER, NULL};
841 ACPI_DEVICE_INFO *adinfo;
842 struct acpi_device *dinfo = device_get_ivars(child);
846 error = AcpiGetObjectInfo(dinfo->ad_handle, &adbuf);
847 adinfo = (ACPI_DEVICE_INFO *) adbuf.Pointer;
849 snprintf(buf, buflen, "unknown");
851 snprintf(buf, buflen, "_HID=%s _UID=%lu",
852 (adinfo->Valid & ACPI_VALID_HID) ?
853 adinfo->HardwareId.Value : "none",
854 (adinfo->Valid & ACPI_VALID_UID) ?
855 strtoul(adinfo->UniqueId.Value, &end, 10) : 0);
863 * Handle per-device ivars
866 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
868 struct acpi_device *ad;
870 if ((ad = device_get_ivars(child)) == NULL) {
871 printf("device has no ivars\n");
875 /* ACPI and ISA compatibility ivars */
877 case ACPI_IVAR_HANDLE:
878 *(ACPI_HANDLE *)result = ad->ad_handle;
880 case ACPI_IVAR_MAGIC:
881 *(uintptr_t *)result = ad->ad_magic;
883 case ACPI_IVAR_PRIVATE:
884 *(void **)result = ad->ad_private;
886 case ACPI_IVAR_FLAGS:
887 *(int *)result = ad->ad_flags;
889 case ISA_IVAR_VENDORID:
890 case ISA_IVAR_SERIAL:
891 case ISA_IVAR_COMPATID:
894 case ISA_IVAR_LOGICALID:
895 *(int *)result = acpi_isa_get_logicalid(child);
905 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
907 struct acpi_device *ad;
909 if ((ad = device_get_ivars(child)) == NULL) {
910 printf("device has no ivars\n");
915 case ACPI_IVAR_HANDLE:
916 ad->ad_handle = (ACPI_HANDLE)value;
918 case ACPI_IVAR_MAGIC:
919 ad->ad_magic = (uintptr_t)value;
921 case ACPI_IVAR_PRIVATE:
922 ad->ad_private = (void *)value;
924 case ACPI_IVAR_FLAGS:
925 ad->ad_flags = (int)value;
928 panic("bad ivar write request (%d)", index);
936 * Handle child resource allocation/removal
938 static struct resource_list *
939 acpi_get_rlist(device_t dev, device_t child)
941 struct acpi_device *ad;
943 ad = device_get_ivars(child);
948 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
949 * duplicates, we merge any in the sysresource attach routine.
952 acpi_sysres_alloc(device_t dev)
954 struct resource *res;
955 struct resource_list *rl;
956 struct resource_list_entry *rle;
958 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
963 * Probe/attach any sysresource devices. This would be unnecessary if we
964 * had multi-pass probe/attach.
966 if (device_get_children(dev, &children, &child_count) != 0)
968 for (i = 0; i < child_count; i++) {
969 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
970 device_probe_and_attach(children[i]);
972 free(children, M_TEMP);
974 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
975 STAILQ_FOREACH(rle, rl, link) {
976 if (rle->res != NULL) {
977 device_printf(dev, "duplicate resource for %lx\n", rle->start);
981 /* Only memory and IO resources are valid here. */
993 /* Pre-allocate resource and add to our rman pool. */
994 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
995 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
997 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1000 device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1001 rle->start, rle->count, rle->type);
1006 static struct resource *
1007 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
1008 u_long start, u_long end, u_long count, u_int flags)
1011 struct acpi_device *ad = device_get_ivars(child);
1012 struct resource_list *rl = &ad->ad_rl;
1013 struct resource_list_entry *rle;
1014 struct resource *res;
1019 /* We only handle memory and IO resources through rman. */
1021 case SYS_RES_IOPORT:
1024 case SYS_RES_MEMORY:
1025 rm = &acpi_rman_mem;
1031 ACPI_SERIAL_BEGIN(acpi);
1034 * If this is an allocation of the "default" range for a given RID, and
1035 * we know what the resources for this device are (i.e., they're on the
1036 * child's resource list), use those start/end values.
1038 if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) {
1039 rle = resource_list_find(rl, type, *rid);
1048 * If this is an allocation of a specific range, see if we can satisfy
1049 * the request from our system resource regions. If we can't, pass the
1050 * request up to the parent.
1052 if (start + count - 1 == end && rm != NULL)
1053 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1056 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1057 start, end, count, flags);
1059 rman_set_rid(res, *rid);
1061 /* If requested, activate the resource using the parent's method. */
1062 if (flags & RF_ACTIVE)
1063 if (bus_activate_resource(child, type, *rid, res) != 0) {
1064 rman_release_resource(res);
1070 if (res != NULL && device_get_parent(child) == bus)
1074 * Since bus_config_intr() takes immediate effect, we cannot
1075 * configure the interrupt associated with a device when we
1076 * parse the resources but have to defer it until a driver
1077 * actually allocates the interrupt via bus_alloc_resource().
1079 * XXX: Should we handle the lookup failing?
1081 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
1082 acpi_config_intr(child, &ares);
1087 ACPI_SERIAL_END(acpi);
1092 acpi_release_resource(device_t bus, device_t child, int type, int rid,
1098 /* We only handle memory and IO resources through rman. */
1100 case SYS_RES_IOPORT:
1103 case SYS_RES_MEMORY:
1104 rm = &acpi_rman_mem;
1110 ACPI_SERIAL_BEGIN(acpi);
1113 * If this resource belongs to one of our internal managers,
1114 * deactivate it and release it to the local pool. If it doesn't,
1115 * pass this request up to the parent.
1117 if (rm != NULL && rman_is_region_manager(r, rm)) {
1118 if (rman_get_flags(r) & RF_ACTIVE) {
1119 ret = bus_deactivate_resource(child, type, rid, r);
1123 ret = rman_release_resource(r);
1125 ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
1128 ACPI_SERIAL_END(acpi);
1133 acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1135 struct resource_list *rl;
1137 rl = acpi_get_rlist(bus, child);
1138 resource_list_delete(rl, type, rid);
1141 /* Allocate an IO port or memory resource, given its GAS. */
1143 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1144 struct resource **res, u_int flags)
1146 int error, res_type;
1149 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1152 /* We only support memory and IO spaces. */
1153 switch (gas->SpaceId) {
1154 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1155 res_type = SYS_RES_MEMORY;
1157 case ACPI_ADR_SPACE_SYSTEM_IO:
1158 res_type = SYS_RES_IOPORT;
1161 return (EOPNOTSUPP);
1165 * If the register width is less than 8, assume the BIOS author means
1166 * it is a bit field and just allocate a byte.
1168 if (gas->BitWidth && gas->BitWidth < 8)
1171 /* Validate the address after we're sure we support the space. */
1172 if (gas->Address == 0 || gas->BitWidth == 0)
1175 bus_set_resource(dev, res_type, *rid, gas->Address,
1177 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1182 bus_delete_resource(dev, res_type, *rid);
1187 /* Probe _HID and _CID for compatible ISA PNP ids. */
1189 acpi_isa_get_logicalid(device_t dev)
1191 ACPI_DEVICE_INFO *devinfo;
1197 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1201 buf.Length = ACPI_ALLOCATE_BUFFER;
1203 /* Fetch and validate the HID. */
1204 if ((h = acpi_get_handle(dev)) == NULL)
1206 error = AcpiGetObjectInfo(h, &buf);
1207 if (ACPI_FAILURE(error))
1209 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1211 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
1212 pnpid = PNP_EISAID(devinfo->HardwareId.Value);
1215 if (buf.Pointer != NULL)
1216 AcpiOsFree(buf.Pointer);
1217 return_VALUE (pnpid);
1221 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1223 ACPI_DEVICE_INFO *devinfo;
1230 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1235 buf.Length = ACPI_ALLOCATE_BUFFER;
1237 /* Fetch and validate the CID */
1238 if ((h = acpi_get_handle(dev)) == NULL)
1240 error = AcpiGetObjectInfo(h, &buf);
1241 if (ACPI_FAILURE(error))
1243 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1244 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
1247 if (devinfo->CompatibilityId.Count < count)
1248 count = devinfo->CompatibilityId.Count;
1249 for (i = 0; i < count; i++) {
1250 if (strncmp(devinfo->CompatibilityId.Id[i].Value, "PNP", 3) != 0)
1252 *pnpid++ = PNP_EISAID(devinfo->CompatibilityId.Id[i].Value);
1257 if (buf.Pointer != NULL)
1258 AcpiOsFree(buf.Pointer);
1259 return_VALUE (valid);
1263 acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1268 h = acpi_get_handle(dev);
1269 if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE)
1272 /* Try to match one of the array of IDs with a HID or CID. */
1273 for (i = 0; ids[i] != NULL; i++) {
1274 if (acpi_MatchHid(h, ids[i]))
1281 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1282 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1287 h = ACPI_ROOT_OBJECT;
1288 else if ((h = acpi_get_handle(dev)) == NULL)
1289 return (AE_BAD_PARAMETER);
1290 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1294 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1296 struct acpi_softc *sc;
1302 sc = device_get_softc(bus);
1303 handle = acpi_get_handle(dev);
1306 * XXX If we find these devices, don't try to power them down.
1307 * The serial and IRDA ports on my T23 hang the system when
1308 * set to D3 and it appears that such legacy devices may
1309 * need special handling in their drivers.
1311 if (handle == NULL ||
1312 acpi_MatchHid(handle, "PNP0500") ||
1313 acpi_MatchHid(handle, "PNP0501") ||
1314 acpi_MatchHid(handle, "PNP0502") ||
1315 acpi_MatchHid(handle, "PNP0510") ||
1316 acpi_MatchHid(handle, "PNP0511"))
1320 * Override next state with the value from _SxD, if present. If no
1321 * dstate argument was provided, don't fetch the return value.
1323 snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1325 status = acpi_GetInteger(handle, sxd, dstate);
1327 status = AcpiEvaluateObject(handle, sxd, NULL, NULL);
1344 /* Callback arg for our implementation of walking the namespace. */
1345 struct acpi_device_scan_ctx {
1346 acpi_scan_cb_t user_fn;
1352 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1354 struct acpi_device_scan_ctx *ctx;
1355 device_t dev, old_dev;
1357 ACPI_OBJECT_TYPE type;
1360 * Skip this device if we think we'll have trouble with it or it is
1361 * the parent where the scan began.
1363 ctx = (struct acpi_device_scan_ctx *)arg;
1364 if (acpi_avoid(h) || h == ctx->parent)
1367 /* If this is not a valid device type (e.g., a method), skip it. */
1368 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1370 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1371 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1375 * Call the user function with the current device. If it is unchanged
1376 * afterwards, return. Otherwise, we update the handle to the new dev.
1378 old_dev = acpi_get_device(h);
1380 status = ctx->user_fn(h, &dev, level, ctx->arg);
1381 if (ACPI_FAILURE(status) || old_dev == dev)
1384 /* Remove the old child and its connection to the handle. */
1385 if (old_dev != NULL) {
1386 device_delete_child(device_get_parent(old_dev), old_dev);
1387 AcpiDetachData(h, acpi_fake_objhandler);
1390 /* Recreate the handle association if the user created a device. */
1392 AcpiAttachData(h, acpi_fake_objhandler, dev);
1398 acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1399 acpi_scan_cb_t user_fn, void *arg)
1402 struct acpi_device_scan_ctx ctx;
1404 if (acpi_disabled("children"))
1408 h = ACPI_ROOT_OBJECT;
1409 else if ((h = acpi_get_handle(dev)) == NULL)
1410 return (AE_BAD_PARAMETER);
1411 ctx.user_fn = user_fn;
1414 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1415 acpi_device_scan_cb, &ctx, NULL));
1419 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1420 * device power states since it's close enough to ACPI.
1423 acpi_set_powerstate_method(device_t bus, device_t child, int state)
1430 h = acpi_get_handle(child);
1431 if (state < ACPI_STATE_D0 || state > ACPI_STATE_D3)
1436 /* Ignore errors if the power methods aren't present. */
1437 status = acpi_pwr_switch_consumer(h, state);
1438 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND
1439 && status != AE_BAD_PARAMETER)
1440 device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n",
1441 state, acpi_name(h), AcpiFormatException(status));
1447 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1449 int result, cid_count, i;
1450 uint32_t lid, cids[8];
1452 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1455 * ISA-style drivers attached to ACPI may persist and
1456 * probe manually if we return ENOENT. We never want
1457 * that to happen, so don't ever return it.
1461 /* Scan the supplied IDs for a match */
1462 lid = acpi_isa_get_logicalid(child);
1463 cid_count = acpi_isa_get_compatid(child, cids, 8);
1464 while (ids && ids->ip_id) {
1465 if (lid == ids->ip_id) {
1469 for (i = 0; i < cid_count; i++) {
1470 if (cids[i] == ids->ip_id) {
1479 if (result == 0 && ids->ip_desc)
1480 device_set_desc(child, ids->ip_desc);
1482 return_VALUE (result);
1485 #if defined(__i386__) || defined(__amd64__)
1487 * Look for a MCFG table. If it is present, use the settings for
1488 * domain (segment) 0 to setup PCI config space access via the memory
1492 acpi_enable_pcie(void)
1494 ACPI_TABLE_HEADER *hdr;
1495 ACPI_MCFG_ALLOCATION *alloc, *end;
1498 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1499 if (ACPI_FAILURE(status))
1502 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1503 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1504 while (alloc < end) {
1505 if (alloc->PciSegment == 0) {
1506 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1507 alloc->EndBusNumber);
1516 * Scan all of the ACPI namespace and attach child devices.
1518 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1519 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1520 * However, in violation of the spec, some systems place their PCI link
1521 * devices in \, so we have to walk the whole namespace. We check the
1522 * type of namespace nodes, so this should be ok.
1525 acpi_probe_children(device_t bus)
1528 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1531 * Scan the namespace and insert placeholders for all the devices that
1532 * we find. We also probe/attach any early devices.
1534 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1535 * we want to create nodes for all devices, not just those that are
1536 * currently present. (This assumes that we don't want to create/remove
1537 * devices as they appear, which might be smarter.)
1539 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1540 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
1543 /* Pre-allocate resources for our rman from any sysresource devices. */
1544 acpi_sysres_alloc(bus);
1546 /* Create any static children by calling device identify methods. */
1547 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1548 bus_generic_probe(bus);
1550 /* Probe/attach all children, created staticly and from the namespace. */
1551 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1552 bus_generic_attach(bus);
1555 * Some of these children may have attached others as part of their attach
1556 * process (eg. the root PCI bus driver), so rescan.
1558 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1559 bus_generic_attach(bus);
1561 /* Attach wake sysctls. */
1562 acpi_wake_sysctl_walk(bus);
1564 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1569 * Determine the probe order for a given device.
1572 acpi_probe_order(ACPI_HANDLE handle, int *order)
1574 ACPI_OBJECT_TYPE type;
1577 * 1. I/O port and memory system resource holders
1578 * 2. Embedded controllers (to handle early accesses)
1579 * 3. PCI Link Devices
1582 AcpiGetType(handle, &type);
1583 if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
1585 else if (acpi_MatchHid(handle, "PNP0C09"))
1587 else if (acpi_MatchHid(handle, "PNP0C0F"))
1589 else if (type == ACPI_TYPE_PROCESSOR)
1594 * Evaluate a child device and determine whether we might attach a device to
1598 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1600 ACPI_OBJECT_TYPE type;
1602 device_t bus, child;
1604 char *handle_str, **search;
1605 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI_", "\\_SB_", NULL};
1607 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1609 /* Skip this device if we think we'll have trouble with it. */
1610 if (acpi_avoid(handle))
1611 return_ACPI_STATUS (AE_OK);
1613 bus = (device_t)context;
1614 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1616 case ACPI_TYPE_DEVICE:
1617 case ACPI_TYPE_PROCESSOR:
1618 case ACPI_TYPE_THERMAL:
1619 case ACPI_TYPE_POWER:
1620 if (acpi_disabled("children"))
1624 * Since we scan from \, be sure to skip system scope objects.
1625 * At least \_SB and \_TZ are detected as devices (ACPI-CA bug?)
1627 handle_str = acpi_name(handle);
1628 for (search = scopes; *search != NULL; search++) {
1629 if (strcmp(handle_str, *search) == 0)
1632 if (*search != NULL)
1636 * Create a placeholder device for this node. Sort the
1637 * placeholder so that the probe/attach passes will run
1638 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1639 * are reserved for special objects (i.e., system
1640 * resources). CPU devices have a very high order to
1641 * ensure they are probed after other devices.
1643 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1644 order = level * 10 + 100;
1645 acpi_probe_order(handle, &order);
1646 child = BUS_ADD_CHILD(bus, order, NULL, -1);
1650 /* Associate the handle with the device_t and vice versa. */
1651 acpi_set_handle(child, handle);
1652 AcpiAttachData(handle, acpi_fake_objhandler, child);
1655 * Check that the device is present. If it's not present,
1656 * leave it disabled (so that we have a device_t attached to
1657 * the handle, but we don't probe it).
1659 * XXX PCI link devices sometimes report "present" but not
1660 * "functional" (i.e. if disabled). Go ahead and probe them
1661 * anyway since we may enable them later.
1663 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1664 /* Never disable PCI link devices. */
1665 if (acpi_MatchHid(handle, "PNP0C0F"))
1668 * Docking stations should remain enabled since the system
1669 * may be undocked at boot.
1671 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1674 device_disable(child);
1679 * Get the device's resource settings and attach them.
1680 * Note that if the device has _PRS but no _CRS, we need
1681 * to decide when it's appropriate to try to configure the
1682 * device. Ignore the return value here; it's OK for the
1683 * device not to have any resources.
1685 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
1690 return_ACPI_STATUS (AE_OK);
1694 * AcpiAttachData() requires an object handler but never uses it. This is a
1695 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1698 acpi_fake_objhandler(ACPI_HANDLE h, UINT32 fn, void *data)
1703 acpi_shutdown_final(void *arg, int howto)
1705 struct acpi_softc *sc;
1709 * XXX Shutdown code should only run on the BSP (cpuid 0).
1710 * Some chipsets do not power off the system correctly if called from
1714 if ((howto & RB_POWEROFF) != 0) {
1715 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1716 if (ACPI_FAILURE(status)) {
1717 printf("AcpiEnterSleepStatePrep failed - %s\n",
1718 AcpiFormatException(status));
1721 printf("Powering system off using ACPI\n");
1722 ACPI_DISABLE_IRQS();
1723 status = AcpiEnterSleepState(ACPI_STATE_S5);
1724 if (ACPI_FAILURE(status)) {
1725 printf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1728 printf("ACPI power-off failed - timeout\n");
1730 } else if ((howto & RB_HALT) == 0 &&
1731 (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) &&
1732 sc->acpi_handle_reboot) {
1733 /* Reboot using the reset register. */
1734 status = AcpiHwLowLevelWrite(
1735 AcpiGbl_FADT.ResetRegister.BitWidth,
1736 AcpiGbl_FADT.ResetValue, &AcpiGbl_FADT.ResetRegister);
1737 if (ACPI_FAILURE(status)) {
1738 printf("ACPI reset failed - %s\n", AcpiFormatException(status));
1741 printf("ACPI reset failed - timeout\n");
1743 } else if (sc->acpi_do_disable && panicstr == NULL) {
1745 * Only disable ACPI if the user requested. On some systems, writing
1746 * the disable value to SMI_CMD hangs the system.
1748 printf("Shutting down ACPI\n");
1754 acpi_enable_fixed_events(struct acpi_softc *sc)
1756 static int first_time = 1;
1758 /* Enable and clear fixed events and install handlers. */
1759 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
1760 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1761 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1762 acpi_event_power_button_sleep, sc);
1764 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1766 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
1767 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1768 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1769 acpi_event_sleep_button_sleep, sc);
1771 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1778 * Returns true if the device is actually present and should
1779 * be attached to. This requires the present, enabled, UI-visible
1780 * and diagnostics-passed bits to be set.
1783 acpi_DeviceIsPresent(device_t dev)
1785 ACPI_DEVICE_INFO *devinfo;
1792 if ((h = acpi_get_handle(dev)) == NULL)
1795 buf.Length = ACPI_ALLOCATE_BUFFER;
1796 error = AcpiGetObjectInfo(h, &buf);
1797 if (ACPI_FAILURE(error))
1799 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1801 /* If no _STA method, must be present */
1802 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1805 /* Return true for 'present' and 'functioning' */
1806 if (ACPI_DEVICE_PRESENT(devinfo->CurrentStatus))
1809 AcpiOsFree(buf.Pointer);
1814 * Returns true if the battery is actually present and inserted.
1817 acpi_BatteryIsPresent(device_t dev)
1819 ACPI_DEVICE_INFO *devinfo;
1826 if ((h = acpi_get_handle(dev)) == NULL)
1829 buf.Length = ACPI_ALLOCATE_BUFFER;
1830 error = AcpiGetObjectInfo(h, &buf);
1831 if (ACPI_FAILURE(error))
1833 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1835 /* If no _STA method, must be present */
1836 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1839 /* Return true for 'present', 'battery present', and 'functioning' */
1840 if (ACPI_BATTERY_PRESENT(devinfo->CurrentStatus))
1843 AcpiOsFree(buf.Pointer);
1848 * Match a HID string against a handle
1851 acpi_MatchHid(ACPI_HANDLE h, const char *hid)
1853 ACPI_DEVICE_INFO *devinfo;
1859 if (hid == NULL || h == NULL)
1862 buf.Length = ACPI_ALLOCATE_BUFFER;
1863 error = AcpiGetObjectInfo(h, &buf);
1864 if (ACPI_FAILURE(error))
1866 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1868 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
1869 strcmp(hid, devinfo->HardwareId.Value) == 0)
1871 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
1872 for (i = 0; i < devinfo->CompatibilityId.Count; i++) {
1873 if (strcmp(hid, devinfo->CompatibilityId.Id[i].Value) == 0) {
1880 AcpiOsFree(buf.Pointer);
1885 * Return the handle of a named object within our scope, ie. that of (parent)
1886 * or one if its parents.
1889 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1894 /* Walk back up the tree to the root */
1896 status = AcpiGetHandle(parent, path, &r);
1897 if (ACPI_SUCCESS(status)) {
1901 /* XXX Return error here? */
1902 if (status != AE_NOT_FOUND)
1904 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1905 return (AE_NOT_FOUND);
1910 /* Find the difference between two PM tick counts. */
1912 acpi_TimerDelta(uint32_t end, uint32_t start)
1917 delta = end - start;
1918 else if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
1919 delta = ((0xFFFFFFFF - start) + end + 1);
1921 delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
1926 * Allocate a buffer with a preset data size.
1929 acpi_AllocBuffer(int size)
1933 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
1936 buf->Pointer = (void *)(buf + 1);
1941 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
1944 ACPI_OBJECT_LIST args;
1946 arg1.Type = ACPI_TYPE_INTEGER;
1947 arg1.Integer.Value = number;
1949 args.Pointer = &arg1;
1951 return (AcpiEvaluateObject(handle, path, &args, NULL));
1955 * Evaluate a path that should return an integer.
1958 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
1965 handle = ACPI_ROOT_OBJECT;
1968 * Assume that what we've been pointed at is an Integer object, or
1969 * a method that will return an Integer.
1971 buf.Pointer = ¶m;
1972 buf.Length = sizeof(param);
1973 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1974 if (ACPI_SUCCESS(status)) {
1975 if (param.Type == ACPI_TYPE_INTEGER)
1976 *number = param.Integer.Value;
1982 * In some applications, a method that's expected to return an Integer
1983 * may instead return a Buffer (probably to simplify some internal
1984 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1985 * convert it into an Integer as best we can.
1989 if (status == AE_BUFFER_OVERFLOW) {
1990 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
1991 status = AE_NO_MEMORY;
1993 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1994 if (ACPI_SUCCESS(status))
1995 status = acpi_ConvertBufferToInteger(&buf, number);
1996 AcpiOsFree(buf.Pointer);
2003 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2009 p = (ACPI_OBJECT *)bufp->Pointer;
2010 if (p->Type == ACPI_TYPE_INTEGER) {
2011 *number = p->Integer.Value;
2014 if (p->Type != ACPI_TYPE_BUFFER)
2016 if (p->Buffer.Length > sizeof(int))
2017 return (AE_BAD_DATA);
2020 val = p->Buffer.Pointer;
2021 for (i = 0; i < p->Buffer.Length; i++)
2022 *number += val[i] << (i * 8);
2027 * Iterate over the elements of an a package object, calling the supplied
2028 * function for each element.
2030 * XXX possible enhancement might be to abort traversal on error.
2033 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2034 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2039 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2040 return (AE_BAD_PARAMETER);
2042 /* Iterate over components */
2044 comp = pkg->Package.Elements;
2045 for (; i < pkg->Package.Count; i++, comp++)
2052 * Find the (index)th resource object in a set.
2055 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2060 rp = (ACPI_RESOURCE *)buf->Pointer;
2064 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2065 return (AE_BAD_PARAMETER);
2067 /* Check for terminator */
2068 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2069 return (AE_NOT_FOUND);
2070 rp = ACPI_NEXT_RESOURCE(rp);
2079 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2081 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2082 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2083 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2086 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2089 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2094 /* Initialise the buffer if necessary. */
2095 if (buf->Pointer == NULL) {
2096 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2097 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2098 return (AE_NO_MEMORY);
2099 rp = (ACPI_RESOURCE *)buf->Pointer;
2100 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2107 * Scan the current buffer looking for the terminator.
2108 * This will either find the terminator or hit the end
2109 * of the buffer and return an error.
2111 rp = (ACPI_RESOURCE *)buf->Pointer;
2113 /* Range check, don't go outside the buffer */
2114 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2115 return (AE_BAD_PARAMETER);
2116 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2118 rp = ACPI_NEXT_RESOURCE(rp);
2122 * Check the size of the buffer and expand if required.
2125 * size of existing resources before terminator +
2126 * size of new resource and header +
2127 * size of terminator.
2129 * Note that this loop should really only run once, unless
2130 * for some reason we are stuffing a *really* huge resource.
2132 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2133 res->Length + ACPI_RS_SIZE_NO_DATA +
2134 ACPI_RS_SIZE_MIN) >= buf->Length) {
2135 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2136 return (AE_NO_MEMORY);
2137 bcopy(buf->Pointer, newp, buf->Length);
2138 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2139 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
2140 AcpiOsFree(buf->Pointer);
2141 buf->Pointer = newp;
2142 buf->Length += buf->Length;
2145 /* Insert the new resource. */
2146 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2148 /* And add the terminator. */
2149 rp = ACPI_NEXT_RESOURCE(rp);
2150 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2157 * Set interrupt model.
2160 acpi_SetIntrModel(int model)
2163 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2167 * DEPRECATED. This interface has serious deficiencies and will be
2170 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2171 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2174 acpi_SetSleepState(struct acpi_softc *sc, int state)
2180 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2183 return (acpi_EnterSleepState(sc, state));
2187 acpi_sleep_force(void *arg)
2189 struct acpi_softc *sc;
2191 printf("acpi: suspend request timed out, forcing sleep now\n");
2193 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2194 printf("acpi: force sleep state S%d failed\n", sc->acpi_next_sstate);
2198 * Request that the system enter the given suspend state. All /dev/apm
2199 * devices and devd(8) will be notified. Userland then has a chance to
2200 * save state and acknowledge the request. The system sleeps once all
2204 acpi_ReqSleepState(struct acpi_softc *sc, int state)
2206 struct apm_clone_data *clone;
2208 if (state < ACPI_STATE_S1 || state > ACPI_STATE_S5)
2211 /* S5 (soft-off) should be entered directly with no waiting. */
2212 if (state == ACPI_STATE_S5) {
2213 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, state)))
2219 #if !defined(__i386__)
2220 /* This platform does not support acpi suspend/resume. */
2221 return (EOPNOTSUPP);
2224 /* If a suspend request is already in progress, just return. */
2226 if (sc->acpi_next_sstate != 0) {
2231 /* Record the pending state and notify all apm devices. */
2232 sc->acpi_next_sstate = state;
2233 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2234 clone->notify_status = APM_EV_NONE;
2235 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
2236 selwakeuppri(&clone->sel_read, PZERO);
2237 KNOTE_UNLOCKED(&clone->sel_read.si_note, 0);
2241 /* If devd(8) is not running, immediately enter the sleep state. */
2242 if (devctl_process_running() == FALSE) {
2244 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) {
2251 /* Now notify devd(8) also. */
2252 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2255 * Set a timeout to fire if userland doesn't ack the suspend request
2256 * in time. This way we still eventually go to sleep if we were
2257 * overheating or running low on battery, even if userland is hung.
2258 * We cancel this timeout once all userland acks are in or the
2259 * suspend request is aborted.
2261 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2267 * Acknowledge (or reject) a pending sleep state. The caller has
2268 * prepared for suspend and is now ready for it to proceed. If the
2269 * error argument is non-zero, it indicates suspend should be cancelled
2270 * and gives an errno value describing why. Once all votes are in,
2271 * we suspend the system.
2274 acpi_AckSleepState(struct apm_clone_data *clone, int error)
2276 struct acpi_softc *sc;
2279 #if !defined(__i386__)
2280 /* This platform does not support acpi suspend/resume. */
2281 return (EOPNOTSUPP);
2284 /* If no pending sleep state, return an error. */
2286 sc = clone->acpi_sc;
2287 if (sc->acpi_next_sstate == 0) {
2292 /* Caller wants to abort suspend process. */
2294 sc->acpi_next_sstate = 0;
2295 callout_stop(&sc->susp_force_to);
2296 printf("acpi: listener on %s cancelled the pending suspend\n",
2297 devtoname(clone->cdev));
2303 * Mark this device as acking the suspend request. Then, walk through
2304 * all devices, seeing if they agree yet. We only count devices that
2305 * are writable since read-only devices couldn't ack the request.
2307 clone->notify_status = APM_EV_ACKED;
2309 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2310 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2311 clone->notify_status != APM_EV_ACKED) {
2317 /* If all devices have voted "yes", we will suspend now. */
2319 callout_stop(&sc->susp_force_to);
2323 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2331 acpi_sleep_enable(void *arg)
2334 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
2337 enum acpi_sleep_state {
2340 ACPI_SS_DEV_SUSPEND,
2346 * Enter the desired system sleep state.
2348 * Currently we support S1-S5 but S4 is only S4BIOS
2351 acpi_EnterSleepState(struct acpi_softc *sc, int state)
2356 enum acpi_sleep_state slp_state;
2358 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2360 /* Re-entry once we're suspending is not allowed. */
2363 if (sc->acpi_sleep_disabled) {
2365 printf("acpi: suspend request ignored (not ready yet)\n");
2368 sc->acpi_sleep_disabled = 1;
2372 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2373 * drivers need this.
2376 slp_state = ACPI_SS_NONE;
2382 status = AcpiGetSleepTypeData(state, &TypeA, &TypeB);
2383 if (status == AE_NOT_FOUND) {
2384 device_printf(sc->acpi_dev,
2385 "Sleep state S%d not supported by BIOS\n", state);
2387 } else if (ACPI_FAILURE(status)) {
2388 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
2389 AcpiFormatException(status));
2393 sc->acpi_sstate = state;
2395 /* Enable any GPEs as appropriate and requested by the user. */
2396 acpi_wake_prep_walk(state);
2397 slp_state = ACPI_SS_GPE_SET;
2400 * Inform all devices that we are going to sleep. If at least one
2401 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2403 * XXX Note that a better two-pass approach with a 'veto' pass
2404 * followed by a "real thing" pass would be better, but the current
2405 * bus interface does not provide for this.
2407 if (DEVICE_SUSPEND(root_bus) != 0) {
2408 device_printf(sc->acpi_dev, "device_suspend failed\n");
2411 slp_state = ACPI_SS_DEV_SUSPEND;
2413 /* If testing device suspend only, back out of everything here. */
2414 if (acpi_susp_bounce)
2417 status = AcpiEnterSleepStatePrep(state);
2418 if (ACPI_FAILURE(status)) {
2419 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2420 AcpiFormatException(status));
2423 slp_state = ACPI_SS_SLP_PREP;
2425 if (sc->acpi_sleep_delay > 0)
2426 DELAY(sc->acpi_sleep_delay * 1000000);
2428 if (state != ACPI_STATE_S1) {
2429 acpi_sleep_machdep(sc, state);
2431 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2432 if (state == ACPI_STATE_S4)
2435 ACPI_DISABLE_IRQS();
2436 status = AcpiEnterSleepState(state);
2437 if (ACPI_FAILURE(status)) {
2438 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2439 AcpiFormatException(status));
2443 slp_state = ACPI_SS_SLEPT;
2447 * Shut down cleanly and power off. This will call us back through the
2448 * shutdown handlers.
2450 shutdown_nice(RB_POWEROFF);
2454 status = AE_BAD_PARAMETER;
2459 * Back out state according to how far along we got in the suspend
2460 * process. This handles both the error and success cases.
2462 sc->acpi_next_sstate = 0;
2463 if (slp_state >= ACPI_SS_GPE_SET) {
2464 acpi_wake_prep_walk(state);
2465 sc->acpi_sstate = ACPI_STATE_S0;
2467 if (slp_state >= ACPI_SS_SLP_PREP)
2468 AcpiLeaveSleepState(state);
2469 if (slp_state >= ACPI_SS_DEV_SUSPEND)
2470 DEVICE_RESUME(root_bus);
2471 if (slp_state >= ACPI_SS_SLEPT)
2472 acpi_enable_fixed_events(sc);
2474 /* Allow another sleep request after a while. */
2475 if (state != ACPI_STATE_S5)
2476 timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);
2478 /* Run /etc/rc.resume after we are back. */
2479 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2482 return_ACPI_STATUS (status);
2485 /* Initialize a device's wake GPE. */
2487 acpi_wake_init(device_t dev, int type)
2489 struct acpi_prw_data prw;
2491 /* Evaluate _PRW to find the GPE. */
2492 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2495 /* Set the requested type for the GPE (runtime, wake, or both). */
2496 if (ACPI_FAILURE(AcpiSetGpeType(prw.gpe_handle, prw.gpe_bit, type))) {
2497 device_printf(dev, "set GPE type failed\n");
2504 /* Enable or disable the device's wake GPE. */
2506 acpi_wake_set_enable(device_t dev, int enable)
2508 struct acpi_prw_data prw;
2512 /* Make sure the device supports waking the system and get the GPE. */
2513 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2516 flags = acpi_get_flags(dev);
2518 status = AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2519 if (ACPI_FAILURE(status)) {
2520 device_printf(dev, "enable wake failed\n");
2523 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2525 status = AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2526 if (ACPI_FAILURE(status)) {
2527 device_printf(dev, "disable wake failed\n");
2530 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2537 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
2539 struct acpi_prw_data prw;
2542 /* Check that this is a wake-capable device and get its GPE. */
2543 if (acpi_parse_prw(handle, &prw) != 0)
2545 dev = acpi_get_device(handle);
2548 * The destination sleep state must be less than (i.e., higher power)
2549 * or equal to the value specified by _PRW. If this GPE cannot be
2550 * enabled for the next sleep state, then disable it. If it can and
2551 * the user requested it be enabled, turn on any required power resources
2554 if (sstate > prw.lowest_wake) {
2555 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2557 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2558 acpi_name(handle), sstate);
2559 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2560 acpi_pwr_wake_enable(handle, 1);
2561 acpi_SetInteger(handle, "_PSW", 1);
2563 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2564 acpi_name(handle), sstate);
2571 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
2573 struct acpi_prw_data prw;
2577 * Check that this is a wake-capable device and get its GPE. Return
2578 * now if the user didn't enable this device for wake.
2580 if (acpi_parse_prw(handle, &prw) != 0)
2582 dev = acpi_get_device(handle);
2583 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2587 * If this GPE couldn't be enabled for the previous sleep state, it was
2588 * disabled before going to sleep so re-enable it. If it was enabled,
2589 * clear _PSW and turn off any power resources it used.
2591 if (sstate > prw.lowest_wake) {
2592 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2594 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2596 acpi_SetInteger(handle, "_PSW", 0);
2597 acpi_pwr_wake_enable(handle, 0);
2599 device_printf(dev, "run_prep cleaned up for %s\n",
2607 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
2611 /* If suspending, run the sleep prep function, otherwise wake. */
2612 sstate = *(int *)context;
2613 if (AcpiGbl_SystemAwakeAndRunning)
2614 acpi_wake_sleep_prep(handle, sstate);
2616 acpi_wake_run_prep(handle, sstate);
2620 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2622 acpi_wake_prep_walk(int sstate)
2624 ACPI_HANDLE sb_handle;
2626 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
2627 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
2628 acpi_wake_prep, &sstate, NULL);
2632 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2634 acpi_wake_sysctl_walk(device_t dev)
2636 int error, i, numdevs;
2641 error = device_get_children(dev, &devlist, &numdevs);
2642 if (error != 0 || numdevs == 0) {
2644 free(devlist, M_TEMP);
2647 for (i = 0; i < numdevs; i++) {
2649 acpi_wake_sysctl_walk(child);
2650 if (!device_is_attached(child))
2652 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
2653 if (ACPI_SUCCESS(status)) {
2654 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
2655 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
2656 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
2657 acpi_wake_set_sysctl, "I", "Device set to wake the system");
2660 free(devlist, M_TEMP);
2665 /* Enable or disable wake from userland. */
2667 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2672 dev = (device_t)arg1;
2673 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
2675 error = sysctl_handle_int(oidp, &enable, 0, req);
2676 if (error != 0 || req->newptr == NULL)
2678 if (enable != 0 && enable != 1)
2681 return (acpi_wake_set_enable(dev, enable));
2684 /* Parse a device's _PRW into a structure. */
2686 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2689 ACPI_BUFFER prw_buffer;
2690 ACPI_OBJECT *res, *res2;
2691 int error, i, power_count;
2693 if (h == NULL || prw == NULL)
2697 * The _PRW object (7.2.9) is only required for devices that have the
2698 * ability to wake the system from a sleeping state.
2701 prw_buffer.Pointer = NULL;
2702 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2703 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2704 if (ACPI_FAILURE(status))
2706 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2709 if (!ACPI_PKG_VALID(res, 2))
2713 * Element 1 of the _PRW object:
2714 * The lowest power system sleeping state that can be entered while still
2715 * providing wake functionality. The sleeping state being entered must
2716 * be less than (i.e., higher power) or equal to this value.
2718 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2722 * Element 0 of the _PRW object:
2724 switch (res->Package.Elements[0].Type) {
2725 case ACPI_TYPE_INTEGER:
2727 * If the data type of this package element is numeric, then this
2728 * _PRW package element is the bit index in the GPEx_EN, in the
2729 * GPE blocks described in the FADT, of the enable bit that is
2730 * enabled for the wake event.
2732 prw->gpe_handle = NULL;
2733 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2736 case ACPI_TYPE_PACKAGE:
2738 * If the data type of this package element is a package, then this
2739 * _PRW package element is itself a package containing two
2740 * elements. The first is an object reference to the GPE Block
2741 * device that contains the GPE that will be triggered by the wake
2742 * event. The second element is numeric and it contains the bit
2743 * index in the GPEx_EN, in the GPE Block referenced by the
2744 * first element in the package, of the enable bit that is enabled for
2747 * For example, if this field is a package then it is of the form:
2748 * Package() {\_SB.PCI0.ISA.GPE, 2}
2750 res2 = &res->Package.Elements[0];
2751 if (!ACPI_PKG_VALID(res2, 2))
2753 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2754 if (prw->gpe_handle == NULL)
2756 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2764 /* Elements 2 to N of the _PRW object are power resources. */
2765 power_count = res->Package.Count - 2;
2766 if (power_count > ACPI_PRW_MAX_POWERRES) {
2767 printf("ACPI device %s has too many power resources\n", acpi_name(h));
2770 prw->power_res_count = power_count;
2771 for (i = 0; i < power_count; i++)
2772 prw->power_res[i] = res->Package.Elements[i];
2775 if (prw_buffer.Pointer != NULL)
2776 AcpiOsFree(prw_buffer.Pointer);
2781 * ACPI Event Handlers
2784 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2787 acpi_system_eventhandler_sleep(void *arg, int state)
2791 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2793 /* Check if button action is disabled. */
2794 if (state == ACPI_S_STATES_MAX + 1)
2797 /* Request that the system prepare to enter the given suspend state. */
2798 ret = acpi_ReqSleepState((struct acpi_softc *)arg, state);
2800 printf("acpi: request to enter state S%d failed (err %d)\n",
2807 acpi_system_eventhandler_wakeup(void *arg, int state)
2810 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2812 /* Currently, nothing to do for wakeup. */
2818 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2821 acpi_event_power_button_sleep(void *context)
2823 struct acpi_softc *sc = (struct acpi_softc *)context;
2825 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2827 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2829 return_VALUE (ACPI_INTERRUPT_HANDLED);
2833 acpi_event_power_button_wake(void *context)
2835 struct acpi_softc *sc = (struct acpi_softc *)context;
2837 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2839 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2841 return_VALUE (ACPI_INTERRUPT_HANDLED);
2845 acpi_event_sleep_button_sleep(void *context)
2847 struct acpi_softc *sc = (struct acpi_softc *)context;
2849 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2851 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2853 return_VALUE (ACPI_INTERRUPT_HANDLED);
2857 acpi_event_sleep_button_wake(void *context)
2859 struct acpi_softc *sc = (struct acpi_softc *)context;
2861 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2863 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2865 return_VALUE (ACPI_INTERRUPT_HANDLED);
2869 * XXX This static buffer is suboptimal. There is no locking so only
2870 * use this for single-threaded callers.
2873 acpi_name(ACPI_HANDLE handle)
2876 static char data[256];
2878 buf.Length = sizeof(data);
2881 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
2883 return ("(unknown)");
2887 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2888 * parts of the namespace.
2891 acpi_avoid(ACPI_HANDLE handle)
2893 char *cp, *env, *np;
2896 np = acpi_name(handle);
2899 if ((env = getenv("debug.acpi.avoid")) == NULL)
2902 /* Scan the avoid list checking for a match */
2905 while (*cp != 0 && isspace(*cp))
2910 while (cp[len] != 0 && !isspace(cp[len]))
2912 if (!strncmp(cp, np, len)) {
2924 * Debugging/bug-avoidance. Disable ACPI subsystem components.
2927 acpi_disabled(char *subsys)
2932 if ((env = getenv("debug.acpi.disabled")) == NULL)
2934 if (strcmp(env, "all") == 0) {
2939 /* Scan the disable list, checking for a match. */
2942 while (*cp != '\0' && isspace(*cp))
2947 while (cp[len] != '\0' && !isspace(cp[len]))
2949 if (strncmp(cp, subsys, len) == 0) {
2961 * Control interface.
2963 * We multiplex ioctls for all participating ACPI devices here. Individual
2964 * drivers wanting to be accessible via /dev/acpi should use the
2965 * register/deregister interface to make their handlers visible.
2967 struct acpi_ioctl_hook
2969 TAILQ_ENTRY(acpi_ioctl_hook) link;
2975 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
2976 static int acpi_ioctl_hooks_initted;
2979 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
2981 struct acpi_ioctl_hook *hp;
2983 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
2990 if (acpi_ioctl_hooks_initted == 0) {
2991 TAILQ_INIT(&acpi_ioctl_hooks);
2992 acpi_ioctl_hooks_initted = 1;
2994 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
3001 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
3003 struct acpi_ioctl_hook *hp;
3006 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
3007 if (hp->cmd == cmd && hp->fn == fn)
3011 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
3012 free(hp, M_ACPIDEV);
3018 acpiopen(struct cdev *dev, int flag, int fmt, d_thread_t *td)
3024 acpiclose(struct cdev *dev, int flag, int fmt, d_thread_t *td)
3030 acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
3032 struct acpi_softc *sc;
3033 struct acpi_ioctl_hook *hp;
3041 * Scan the list of registered ioctls, looking for handlers.
3044 if (acpi_ioctl_hooks_initted)
3045 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3051 return (hp->fn(cmd, addr, hp->arg));
3054 * Core ioctls are not permitted for non-writable user.
3055 * Currently, other ioctls just fetch information.
3056 * Not changing system behavior.
3058 if ((flag & FWRITE) == 0)
3061 /* Core system ioctls. */
3063 case ACPIIO_REQSLPSTATE:
3064 state = *(int *)addr;
3065 if (state != ACPI_STATE_S5)
3066 error = acpi_ReqSleepState(sc, state);
3068 printf("power off via acpi ioctl not supported\n");
3072 case ACPIIO_ACKSLPSTATE:
3073 error = *(int *)addr;
3074 error = acpi_AckSleepState(sc->acpi_clone, error);
3076 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3078 state = *(int *)addr;
3079 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
3080 if (ACPI_SUCCESS(acpi_SetSleepState(sc, state)))
3092 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3096 UINT8 state, TypeA, TypeB;
3098 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3099 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++)
3100 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
3101 sbuf_printf(&sb, "S%d ", state);
3104 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3110 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3112 char sleep_state[10];
3114 u_int new_state, old_state;
3116 old_state = *(u_int *)oidp->oid_arg1;
3117 if (old_state > ACPI_S_STATES_MAX + 1)
3118 strlcpy(sleep_state, "unknown", sizeof(sleep_state));
3120 strlcpy(sleep_state, sleep_state_names[old_state], sizeof(sleep_state));
3121 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3122 if (error == 0 && req->newptr != NULL) {
3123 new_state = ACPI_STATE_S0;
3124 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++)
3125 if (strcmp(sleep_state, sleep_state_names[new_state]) == 0)
3127 if (new_state <= ACPI_S_STATES_MAX + 1) {
3128 if (new_state != old_state)
3129 *(u_int *)oidp->oid_arg1 = new_state;
3137 /* Inform devctl(4) when we receive a Notify. */
3139 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3141 char notify_buf[16];
3142 ACPI_BUFFER handle_buf;
3145 if (subsystem == NULL)
3148 handle_buf.Pointer = NULL;
3149 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3150 status = AcpiNsHandleToPathname(h, &handle_buf);
3151 if (ACPI_FAILURE(status))
3153 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
3154 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
3155 AcpiOsFree(handle_buf.Pointer);
3160 * Support for parsing debug options from the kernel environment.
3162 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3163 * by specifying the names of the bits in the debug.acpi.layer and
3164 * debug.acpi.level environment variables. Bits may be unset by
3165 * prefixing the bit name with !.
3173 static struct debugtag dbg_layer[] = {
3174 {"ACPI_UTILITIES", ACPI_UTILITIES},
3175 {"ACPI_HARDWARE", ACPI_HARDWARE},
3176 {"ACPI_EVENTS", ACPI_EVENTS},
3177 {"ACPI_TABLES", ACPI_TABLES},
3178 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3179 {"ACPI_PARSER", ACPI_PARSER},
3180 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3181 {"ACPI_EXECUTER", ACPI_EXECUTER},
3182 {"ACPI_RESOURCES", ACPI_RESOURCES},
3183 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3184 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3185 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3186 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3188 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3189 {"ACPI_BATTERY", ACPI_BATTERY},
3190 {"ACPI_BUS", ACPI_BUS},
3191 {"ACPI_BUTTON", ACPI_BUTTON},
3192 {"ACPI_EC", ACPI_EC},
3193 {"ACPI_FAN", ACPI_FAN},
3194 {"ACPI_POWERRES", ACPI_POWERRES},
3195 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3196 {"ACPI_THERMAL", ACPI_THERMAL},
3197 {"ACPI_TIMER", ACPI_TIMER},
3198 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3202 static struct debugtag dbg_level[] = {
3203 {"ACPI_LV_ERROR", ACPI_LV_ERROR},
3204 {"ACPI_LV_WARN", ACPI_LV_WARN},
3205 {"ACPI_LV_INIT", ACPI_LV_INIT},
3206 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3207 {"ACPI_LV_INFO", ACPI_LV_INFO},
3208 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3210 /* Trace verbosity level 1 [Standard Trace Level] */
3211 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3212 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3213 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3214 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3215 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3216 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3217 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3218 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3219 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3220 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3221 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3222 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3223 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3224 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3225 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3227 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3228 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3229 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3230 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3231 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3232 {"ACPI_LV_ALL", ACPI_LV_ALL},
3234 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3235 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3236 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3237 {"ACPI_LV_IO", ACPI_LV_IO},
3238 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3239 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3241 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3242 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
3243 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
3244 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
3245 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
3246 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
3251 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
3263 while (*ep && !isspace(*ep))
3274 for (i = 0; tag[i].name != NULL; i++) {
3275 if (!strncmp(cp, tag[i].name, l)) {
3277 *flag |= tag[i].value;
3279 *flag &= ~tag[i].value;
3287 acpi_set_debugging(void *junk)
3289 char *layer, *level;
3296 layer = getenv("debug.acpi.layer");
3297 level = getenv("debug.acpi.level");
3298 if (layer == NULL && level == NULL)
3301 printf("ACPI set debug");
3302 if (layer != NULL) {
3303 if (strcmp("NONE", layer) != 0)
3304 printf(" layer '%s'", layer);
3305 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
3308 if (level != NULL) {
3309 if (strcmp("NONE", level) != 0)
3310 printf(" level '%s'", level);
3311 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
3317 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3321 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
3324 struct debugtag *tag;
3327 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
3329 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
3330 tag = &dbg_layer[0];
3331 dbg = &AcpiDbgLayer;
3333 tag = &dbg_level[0];
3334 dbg = &AcpiDbgLevel;
3337 /* Get old values if this is a get request. */
3338 ACPI_SERIAL_BEGIN(acpi);
3340 sbuf_cpy(&sb, "NONE");
3341 } else if (req->newptr == NULL) {
3342 for (; tag->name != NULL; tag++) {
3343 if ((*dbg & tag->value) == tag->value)
3344 sbuf_printf(&sb, "%s ", tag->name);
3350 /* Copy out the old values to the user. */
3351 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
3354 /* If the user is setting a string, parse it. */
3355 if (error == 0 && req->newptr != NULL) {
3357 setenv((char *)oidp->oid_arg1, (char *)req->newptr);
3358 acpi_set_debugging(NULL);
3360 ACPI_SERIAL_END(acpi);
3365 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
3366 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
3367 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
3368 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3369 #endif /* ACPI_DEBUG */
3372 acpi_pm_func(u_long cmd, void *arg, ...)
3374 int state, acpi_state;
3376 struct acpi_softc *sc;
3381 case POWER_CMD_SUSPEND:
3382 sc = (struct acpi_softc *)arg;
3389 state = va_arg(ap, int);
3393 case POWER_SLEEP_STATE_STANDBY:
3394 acpi_state = sc->acpi_standby_sx;
3396 case POWER_SLEEP_STATE_SUSPEND:
3397 acpi_state = sc->acpi_suspend_sx;
3399 case POWER_SLEEP_STATE_HIBERNATE:
3400 acpi_state = ACPI_STATE_S4;
3407 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
3420 acpi_pm_register(void *arg)
3422 if (!cold || resource_disabled("acpi", 0))
3425 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3428 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);