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>
49 #include <sys/sched.h>
51 #include <sys/timetc.h>
53 #if defined(__i386__) || defined(__amd64__)
54 #include <machine/pci_cfgreg.h>
56 #include <machine/resource.h>
57 #include <machine/bus.h>
59 #include <isa/isavar.h>
60 #include <isa/pnpvar.h>
62 #include <contrib/dev/acpica/include/acpi.h>
63 #include <contrib/dev/acpica/include/accommon.h>
64 #include <contrib/dev/acpica/include/acnamesp.h>
66 #include <dev/acpica/acpivar.h>
67 #include <dev/acpica/acpiio.h>
69 #include <vm/vm_param.h>
71 static MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
73 /* Hooks for the ACPI CA debugging infrastructure */
74 #define _COMPONENT ACPI_BUS
75 ACPI_MODULE_NAME("ACPI")
77 static d_open_t acpiopen;
78 static d_close_t acpiclose;
79 static d_ioctl_t acpiioctl;
81 static struct cdevsw acpi_cdevsw = {
82 .d_version = D_VERSION,
89 struct acpi_interface {
94 /* Global mutex for locking access to the ACPI subsystem. */
95 struct mtx acpi_mutex;
96 struct callout acpi_sleep_timer;
98 /* Bitmap of device quirks. */
101 /* Supported sleep states. */
102 static BOOLEAN acpi_sleep_states[ACPI_S_STATE_COUNT];
104 static void acpi_lookup(void *arg, const char *name, device_t *dev);
105 static int acpi_modevent(struct module *mod, int event, void *junk);
106 static int acpi_probe(device_t dev);
107 static int acpi_attach(device_t dev);
108 static int acpi_suspend(device_t dev);
109 static int acpi_resume(device_t dev);
110 static int acpi_shutdown(device_t dev);
111 static device_t acpi_add_child(device_t bus, u_int order, const char *name,
113 static int acpi_print_child(device_t bus, device_t child);
114 static void acpi_probe_nomatch(device_t bus, device_t child);
115 static void acpi_driver_added(device_t dev, driver_t *driver);
116 static int acpi_read_ivar(device_t dev, device_t child, int index,
118 static int acpi_write_ivar(device_t dev, device_t child, int index,
120 static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
121 static void acpi_reserve_resources(device_t dev);
122 static int acpi_sysres_alloc(device_t dev);
123 static int acpi_set_resource(device_t dev, device_t child, int type,
124 int rid, u_long start, u_long count);
125 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
126 int type, int *rid, u_long start, u_long end,
127 u_long count, u_int flags);
128 static int acpi_adjust_resource(device_t bus, device_t child, int type,
129 struct resource *r, u_long start, u_long end);
130 static int acpi_release_resource(device_t bus, device_t child, int type,
131 int rid, struct resource *r);
132 static void acpi_delete_resource(device_t bus, device_t child, int type,
134 static uint32_t acpi_isa_get_logicalid(device_t dev);
135 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
136 static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
137 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
138 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
140 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
141 void *context, void **retval);
142 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
143 int max_depth, acpi_scan_cb_t user_fn, void *arg);
144 static int acpi_set_powerstate(device_t child, int state);
145 static int acpi_isa_pnp_probe(device_t bus, device_t child,
146 struct isa_pnp_id *ids);
147 static void acpi_probe_children(device_t bus);
148 static void acpi_probe_order(ACPI_HANDLE handle, int *order);
149 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
150 void *context, void **status);
151 static void acpi_sleep_enable(void *arg);
152 static ACPI_STATUS acpi_sleep_disable(struct acpi_softc *sc);
153 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
154 static void acpi_shutdown_final(void *arg, int howto);
155 static void acpi_enable_fixed_events(struct acpi_softc *sc);
156 static BOOLEAN acpi_has_hid(ACPI_HANDLE handle);
157 static void acpi_resync_clock(struct acpi_softc *sc);
158 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
159 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
160 static int acpi_wake_prep_walk(int sstate);
161 static int acpi_wake_sysctl_walk(device_t dev);
162 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
163 static void acpi_system_eventhandler_sleep(void *arg, int state);
164 static void acpi_system_eventhandler_wakeup(void *arg, int state);
165 static int acpi_sname2sstate(const char *sname);
166 static const char *acpi_sstate2sname(int sstate);
167 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
168 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
169 static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS);
170 static int acpi_pm_func(u_long cmd, void *arg, ...);
171 static int acpi_child_location_str_method(device_t acdev, device_t child,
172 char *buf, size_t buflen);
173 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
174 char *buf, size_t buflen);
175 #if defined(__i386__) || defined(__amd64__)
176 static void acpi_enable_pcie(void);
178 static void acpi_hint_device_unit(device_t acdev, device_t child,
179 const char *name, int *unitp);
180 static void acpi_reset_interfaces(device_t dev);
182 static device_method_t acpi_methods[] = {
183 /* Device interface */
184 DEVMETHOD(device_probe, acpi_probe),
185 DEVMETHOD(device_attach, acpi_attach),
186 DEVMETHOD(device_shutdown, acpi_shutdown),
187 DEVMETHOD(device_detach, bus_generic_detach),
188 DEVMETHOD(device_suspend, acpi_suspend),
189 DEVMETHOD(device_resume, acpi_resume),
192 DEVMETHOD(bus_add_child, acpi_add_child),
193 DEVMETHOD(bus_print_child, acpi_print_child),
194 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
195 DEVMETHOD(bus_driver_added, acpi_driver_added),
196 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
197 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
198 DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
199 DEVMETHOD(bus_set_resource, acpi_set_resource),
200 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
201 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
202 DEVMETHOD(bus_adjust_resource, acpi_adjust_resource),
203 DEVMETHOD(bus_release_resource, acpi_release_resource),
204 DEVMETHOD(bus_delete_resource, acpi_delete_resource),
205 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
206 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
207 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
208 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
209 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
210 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
211 DEVMETHOD(bus_hint_device_unit, acpi_hint_device_unit),
212 DEVMETHOD(bus_get_domain, acpi_get_domain),
215 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
216 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
217 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
218 DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
221 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
226 static driver_t acpi_driver = {
229 sizeof(struct acpi_softc),
232 static devclass_t acpi_devclass;
233 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
234 MODULE_VERSION(acpi, 1);
236 ACPI_SERIAL_DECL(acpi, "ACPI root bus");
238 /* Local pools for managing system resources for ACPI child devices. */
239 static struct rman acpi_rman_io, acpi_rman_mem;
241 #define ACPI_MINIMUM_AWAKETIME 5
243 /* Holds the description of the acpi0 device. */
244 static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
246 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
247 static char acpi_ca_version[12];
248 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
249 acpi_ca_version, 0, "Version of Intel ACPI-CA");
252 * Allow overriding _OSI methods.
254 static char acpi_install_interface[256];
255 TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface,
256 sizeof(acpi_install_interface));
257 static char acpi_remove_interface[256];
258 TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface,
259 sizeof(acpi_remove_interface));
261 /* Allow users to dump Debug objects without ACPI debugger. */
262 static int acpi_debug_objects;
263 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects);
264 SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects,
265 CTLFLAG_RW | CTLTYPE_INT, NULL, 0, acpi_debug_objects_sysctl, "I",
266 "Enable Debug objects");
268 /* Allow the interpreter to ignore common mistakes in BIOS. */
269 static int acpi_interpreter_slack = 1;
270 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack);
271 SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RDTUN,
272 &acpi_interpreter_slack, 1, "Turn on interpreter slack mode.");
274 /* Ignore register widths set by FADT and use default widths instead. */
275 static int acpi_ignore_reg_width = 1;
276 TUNABLE_INT("debug.acpi.default_register_width", &acpi_ignore_reg_width);
277 SYSCTL_INT(_debug_acpi, OID_AUTO, default_register_width, CTLFLAG_RDTUN,
278 &acpi_ignore_reg_width, 1, "Ignore register widths set by FADT");
281 /* Reset system clock while resuming. XXX Remove once tested. */
282 static int acpi_reset_clock = 1;
283 TUNABLE_INT("debug.acpi.reset_clock", &acpi_reset_clock);
284 SYSCTL_INT(_debug_acpi, OID_AUTO, reset_clock, CTLFLAG_RW,
285 &acpi_reset_clock, 1, "Reset system clock while resuming.");
288 /* Allow users to override quirks. */
289 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
291 static int acpi_susp_bounce;
292 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
293 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
296 * ACPI can only be loaded as a module by the loader; activating it after
297 * system bootstrap time is not useful, and can be fatal to the system.
298 * It also cannot be unloaded, since the entire system bus hierarchy hangs
302 acpi_modevent(struct module *mod, int event, void *junk)
307 printf("The ACPI driver cannot be loaded after boot.\n");
312 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
322 * Perform early initialization.
327 static int started = 0;
331 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
333 /* Only run the startup code once. The MADT driver also calls this. */
335 return_VALUE (AE_OK);
339 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
340 * if more tables exist.
342 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
343 printf("ACPI: Table initialisation failed: %s\n",
344 AcpiFormatException(status));
345 return_VALUE (status);
348 /* Set up any quirks we have for this system. */
349 if (acpi_quirks == ACPI_Q_OK)
350 acpi_table_quirks(&acpi_quirks);
352 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
353 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
354 acpi_quirks &= ~ACPI_Q_BROKEN;
355 if (acpi_quirks & ACPI_Q_BROKEN) {
356 printf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
360 return_VALUE (status);
364 * Detect ACPI and perform early initialisation.
369 ACPI_TABLE_RSDP *rsdp;
370 ACPI_TABLE_HEADER *rsdt;
371 ACPI_PHYSICAL_ADDRESS paddr;
374 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
379 /* Check that we haven't been disabled with a hint. */
380 if (resource_disabled("acpi", 0))
383 /* Check for other PM systems. */
384 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
385 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
386 printf("ACPI identify failed, other PM system enabled.\n");
390 /* Initialize root tables. */
391 if (ACPI_FAILURE(acpi_Startup())) {
392 printf("ACPI: Try disabling either ACPI or apic support.\n");
396 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
397 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
399 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
400 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
402 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
403 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
405 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
407 sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN);
408 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
411 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
415 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
417 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
423 * Fetch some descriptive data from ACPI to put in our attach message.
426 acpi_probe(device_t dev)
429 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
431 device_set_desc(dev, acpi_desc);
433 return_VALUE (BUS_PROBE_NOWILDCARD);
437 acpi_attach(device_t dev)
439 struct acpi_softc *sc;
446 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
448 sc = device_get_softc(dev);
450 callout_init(&sc->susp_force_to, TRUE);
454 /* Initialize resource manager. */
455 acpi_rman_io.rm_type = RMAN_ARRAY;
456 acpi_rman_io.rm_start = 0;
457 acpi_rman_io.rm_end = 0xffff;
458 acpi_rman_io.rm_descr = "ACPI I/O ports";
459 if (rman_init(&acpi_rman_io) != 0)
460 panic("acpi rman_init IO ports failed");
461 acpi_rman_mem.rm_type = RMAN_ARRAY;
462 acpi_rman_mem.rm_start = 0;
463 acpi_rman_mem.rm_end = ~0ul;
464 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
465 if (rman_init(&acpi_rman_mem) != 0)
466 panic("acpi rman_init memory failed");
468 /* Initialise the ACPI mutex */
469 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
472 * Set the globals from our tunables. This is needed because ACPI-CA
473 * uses UINT8 for some values and we have no tunable_byte.
475 AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE;
476 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
477 AcpiGbl_UseDefaultRegisterWidths = acpi_ignore_reg_width ? TRUE : FALSE;
481 * Disable all debugging layers and levels.
487 /* Start up the ACPI CA subsystem. */
488 status = AcpiInitializeSubsystem();
489 if (ACPI_FAILURE(status)) {
490 device_printf(dev, "Could not initialize Subsystem: %s\n",
491 AcpiFormatException(status));
495 /* Override OS interfaces if the user requested. */
496 acpi_reset_interfaces(dev);
498 /* Load ACPI name space. */
499 status = AcpiLoadTables();
500 if (ACPI_FAILURE(status)) {
501 device_printf(dev, "Could not load Namespace: %s\n",
502 AcpiFormatException(status));
506 #if defined(__i386__) || defined(__amd64__)
507 /* Handle MCFG table if present. */
512 * Note that some systems (specifically, those with namespace evaluation
513 * issues that require the avoidance of parts of the namespace) must
514 * avoid running _INI and _STA on everything, as well as dodging the final
517 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
519 * XXX We should arrange for the object init pass after we have attached
520 * all our child devices, but on many systems it works here.
523 if (testenv("debug.acpi.avoid"))
524 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
526 /* Bring the hardware and basic handlers online. */
527 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
528 device_printf(dev, "Could not enable ACPI: %s\n",
529 AcpiFormatException(status));
534 * Call the ECDT probe function to provide EC functionality before
535 * the namespace has been evaluated.
537 * XXX This happens before the sysresource devices have been probed and
538 * attached so its resources come from nexus0. In practice, this isn't
539 * a problem but should be addressed eventually.
541 acpi_ec_ecdt_probe(dev);
543 /* Bring device objects and regions online. */
544 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
545 device_printf(dev, "Could not initialize ACPI objects: %s\n",
546 AcpiFormatException(status));
551 * Setup our sysctl tree.
553 * XXX: This doesn't check to make sure that none of these fail.
555 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
556 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
557 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
558 device_get_name(dev), CTLFLAG_RD, 0, "");
559 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
560 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
561 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
562 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
563 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
564 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
565 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
566 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
567 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
568 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
569 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
570 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
571 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
572 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
573 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
574 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
575 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
576 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
577 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
578 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
579 "sleep delay in seconds");
580 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
581 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
582 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
583 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
584 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
585 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
586 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
587 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
588 OID_AUTO, "handle_reboot", CTLFLAG_RW,
589 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
592 * Default to 1 second before sleeping to give some machines time to
595 sc->acpi_sleep_delay = 1;
597 sc->acpi_verbose = 1;
598 if ((env = kern_getenv("hw.acpi.verbose")) != NULL) {
599 if (strcmp(env, "0") != 0)
600 sc->acpi_verbose = 1;
604 /* Only enable reboot by default if the FADT says it is available. */
605 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER)
606 sc->acpi_handle_reboot = 1;
608 /* Only enable S4BIOS by default if the FACS says it is available. */
609 if (AcpiGbl_FACS != NULL && AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
612 /* Probe all supported sleep states. */
613 acpi_sleep_states[ACPI_STATE_S0] = TRUE;
614 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
615 if (ACPI_SUCCESS(AcpiEvaluateObject(ACPI_ROOT_OBJECT,
616 __DECONST(char *, AcpiGbl_SleepStateNames[state]), NULL, NULL)) &&
617 ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
618 acpi_sleep_states[state] = TRUE;
621 * Dispatch the default sleep state to devices. The lid switch is set
622 * to UNKNOWN by default to avoid surprising users.
624 sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ?
625 ACPI_STATE_S5 : ACPI_STATE_UNKNOWN;
626 sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN;
627 sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ?
628 ACPI_STATE_S1 : ACPI_STATE_UNKNOWN;
629 sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ?
630 ACPI_STATE_S3 : ACPI_STATE_UNKNOWN;
632 /* Pick the first valid sleep state for the sleep button default. */
633 sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN;
634 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
635 if (acpi_sleep_states[state]) {
636 sc->acpi_sleep_button_sx = state;
640 acpi_enable_fixed_events(sc);
643 * Scan the namespace and attach/initialise children.
646 /* Register our shutdown handler. */
647 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
651 * Register our acpi event handlers.
652 * XXX should be configurable eg. via userland policy manager.
654 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
655 sc, ACPI_EVENT_PRI_LAST);
656 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
657 sc, ACPI_EVENT_PRI_LAST);
659 /* Flag our initial states. */
660 sc->acpi_enabled = TRUE;
661 sc->acpi_sstate = ACPI_STATE_S0;
662 sc->acpi_sleep_disabled = TRUE;
664 /* Create the control device */
665 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
667 sc->acpi_dev_t->si_drv1 = sc;
669 if ((error = acpi_machdep_init(dev)))
672 /* Register ACPI again to pass the correct argument of pm_func. */
673 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
675 if (!acpi_disabled("bus")) {
676 EVENTHANDLER_REGISTER(dev_lookup, acpi_lookup, NULL, 1000);
677 acpi_probe_children(dev);
680 /* Update all GPEs and enable runtime GPEs. */
681 status = AcpiUpdateAllGpes();
682 if (ACPI_FAILURE(status))
683 device_printf(dev, "Could not update all GPEs: %s\n",
684 AcpiFormatException(status));
686 /* Allow sleep request after a while. */
687 callout_init_mtx(&acpi_sleep_timer, &acpi_mutex, 0);
688 callout_reset(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME,
689 acpi_sleep_enable, sc);
694 return_VALUE (error);
698 acpi_set_power_children(device_t dev, int state)
702 int dstate, i, numdevs;
704 if (device_get_children(dev, &devlist, &numdevs) != 0)
708 * Retrieve and set D-state for the sleep state if _SxD is present.
709 * Skip children who aren't attached since they are handled separately.
711 for (i = 0; i < numdevs; i++) {
714 if (device_is_attached(child) &&
715 acpi_device_pwr_for_sleep(dev, child, &dstate) == 0)
716 acpi_set_powerstate(child, dstate);
718 free(devlist, M_TEMP);
722 acpi_suspend(device_t dev)
728 error = bus_generic_suspend(dev);
730 acpi_set_power_children(dev, ACPI_STATE_D3);
736 acpi_resume(device_t dev)
741 acpi_set_power_children(dev, ACPI_STATE_D0);
743 return (bus_generic_resume(dev));
747 acpi_shutdown(device_t dev)
752 /* Allow children to shutdown first. */
753 bus_generic_shutdown(dev);
756 * Enable any GPEs that are able to power-on the system (i.e., RTC).
757 * Also, disable any that are not valid for this state (most).
759 acpi_wake_prep_walk(ACPI_STATE_S5);
765 * Handle a new device being added
768 acpi_add_child(device_t bus, u_int order, const char *name, int unit)
770 struct acpi_device *ad;
773 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
776 resource_list_init(&ad->ad_rl);
778 child = device_add_child_ordered(bus, order, name, unit);
780 device_set_ivars(child, ad);
787 acpi_print_child(device_t bus, device_t child)
789 struct acpi_device *adev = device_get_ivars(child);
790 struct resource_list *rl = &adev->ad_rl;
793 retval += bus_print_child_header(bus, child);
794 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
795 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
796 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
797 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
798 if (device_get_flags(child))
799 retval += printf(" flags %#x", device_get_flags(child));
800 retval += bus_print_child_domain(bus, child);
801 retval += bus_print_child_footer(bus, child);
807 * If this device is an ACPI child but no one claimed it, attempt
808 * to power it off. We'll power it back up when a driver is added.
810 * XXX Disabled for now since many necessary devices (like fdc and
811 * ATA) don't claim the devices we created for them but still expect
812 * them to be powered up.
815 acpi_probe_nomatch(device_t bus, device_t child)
817 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
818 acpi_set_powerstate(child, ACPI_STATE_D3);
823 * If a new driver has a chance to probe a child, first power it up.
825 * XXX Disabled for now (see acpi_probe_nomatch for details).
828 acpi_driver_added(device_t dev, driver_t *driver)
830 device_t child, *devlist;
833 DEVICE_IDENTIFY(driver, dev);
834 if (device_get_children(dev, &devlist, &numdevs))
836 for (i = 0; i < numdevs; i++) {
838 if (device_get_state(child) == DS_NOTPRESENT) {
839 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
840 acpi_set_powerstate(child, ACPI_STATE_D0);
841 if (device_probe_and_attach(child) != 0)
842 acpi_set_powerstate(child, ACPI_STATE_D3);
844 device_probe_and_attach(child);
848 free(devlist, M_TEMP);
851 /* Location hint for devctl(8) */
853 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
856 struct acpi_device *dinfo = device_get_ivars(child);
860 if (dinfo->ad_handle) {
861 snprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
862 if (ACPI_SUCCESS(acpi_GetInteger(dinfo->ad_handle, "_PXM", &pxm))) {
863 snprintf(buf2, 32, " _PXM=%d", pxm);
864 strlcat(buf, buf2, buflen);
867 snprintf(buf, buflen, "unknown");
872 /* PnP information for devctl(8) */
874 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
877 struct acpi_device *dinfo = device_get_ivars(child);
878 ACPI_DEVICE_INFO *adinfo;
880 if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo))) {
881 snprintf(buf, buflen, "unknown");
885 snprintf(buf, buflen, "_HID=%s _UID=%lu",
886 (adinfo->Valid & ACPI_VALID_HID) ?
887 adinfo->HardwareId.String : "none",
888 (adinfo->Valid & ACPI_VALID_UID) ?
889 strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL);
896 * Handle per-device ivars
899 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
901 struct acpi_device *ad;
903 if ((ad = device_get_ivars(child)) == NULL) {
904 device_printf(child, "device has no ivars\n");
908 /* ACPI and ISA compatibility ivars */
910 case ACPI_IVAR_HANDLE:
911 *(ACPI_HANDLE *)result = ad->ad_handle;
913 case ACPI_IVAR_PRIVATE:
914 *(void **)result = ad->ad_private;
916 case ACPI_IVAR_FLAGS:
917 *(int *)result = ad->ad_flags;
919 case ISA_IVAR_VENDORID:
920 case ISA_IVAR_SERIAL:
921 case ISA_IVAR_COMPATID:
924 case ISA_IVAR_LOGICALID:
925 *(int *)result = acpi_isa_get_logicalid(child);
935 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
937 struct acpi_device *ad;
939 if ((ad = device_get_ivars(child)) == NULL) {
940 device_printf(child, "device has no ivars\n");
945 case ACPI_IVAR_HANDLE:
946 ad->ad_handle = (ACPI_HANDLE)value;
948 case ACPI_IVAR_PRIVATE:
949 ad->ad_private = (void *)value;
951 case ACPI_IVAR_FLAGS:
952 ad->ad_flags = (int)value;
955 panic("bad ivar write request (%d)", index);
963 * Handle child resource allocation/removal
965 static struct resource_list *
966 acpi_get_rlist(device_t dev, device_t child)
968 struct acpi_device *ad;
970 ad = device_get_ivars(child);
975 acpi_match_resource_hint(device_t dev, int type, long value)
977 struct acpi_device *ad = device_get_ivars(dev);
978 struct resource_list *rl = &ad->ad_rl;
979 struct resource_list_entry *rle;
981 STAILQ_FOREACH(rle, rl, link) {
982 if (rle->type != type)
984 if (rle->start <= value && rle->end >= value)
991 * Wire device unit numbers based on resource matches in hints.
994 acpi_hint_device_unit(device_t acdev, device_t child, const char *name,
999 int line, matches, unit;
1002 * Iterate over all the hints for the devices with the specified
1003 * name to see if one's resources are a subset of this device.
1007 if (resource_find_dev(&line, name, &unit, "at", NULL) != 0)
1010 /* Must have an "at" for acpi or isa. */
1011 resource_string_value(name, unit, "at", &s);
1012 if (!(strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 ||
1013 strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0))
1017 * Check for matching resources. We must have at least one match.
1018 * Since I/O and memory resources cannot be shared, if we get a
1019 * match on either of those, ignore any mismatches in IRQs or DRQs.
1021 * XXX: We may want to revisit this to be more lenient and wire
1022 * as long as it gets one match.
1025 if (resource_long_value(name, unit, "port", &value) == 0) {
1027 * Floppy drive controllers are notorious for having a
1028 * wide variety of resources not all of which include the
1029 * first port that is specified by the hint (typically
1030 * 0x3f0) (see the comment above fdc_isa_alloc_resources()
1031 * in fdc_isa.c). However, they do all seem to include
1032 * port + 2 (e.g. 0x3f2) so for a floppy device, look for
1033 * 'value + 2' in the port resources instead of the hint
1036 if (strcmp(name, "fdc") == 0)
1038 if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value))
1043 if (resource_long_value(name, unit, "maddr", &value) == 0) {
1044 if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value))
1051 if (resource_long_value(name, unit, "irq", &value) == 0) {
1052 if (acpi_match_resource_hint(child, SYS_RES_IRQ, value))
1057 if (resource_long_value(name, unit, "drq", &value) == 0) {
1058 if (acpi_match_resource_hint(child, SYS_RES_DRQ, value))
1066 /* We have a winner! */
1074 * Fetch the VM domain for the given device 'dev'.
1076 * Return 1 + domain if there's a domain, 0 if not found;
1080 acpi_parse_pxm(device_t dev, int *domain)
1086 h = acpi_get_handle(dev);
1088 ACPI_SUCCESS(acpi_GetInteger(h, "_PXM", &pxm))) {
1089 d = acpi_map_pxm_to_vm_domainid(pxm);
1101 * Fetch the NUMA domain for the given device.
1103 * If a device has a _PXM method, map that to a NUMA domain.
1105 * If none is found, then it'll call the parent method.
1106 * If there's no domain, return ENOENT.
1109 acpi_get_domain(device_t dev, device_t child, int *domain)
1113 ret = acpi_parse_pxm(child, domain);
1121 /* No _PXM node; go up a level */
1122 return (bus_generic_get_domain(dev, child, domain));
1126 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
1127 * duplicates, we merge any in the sysresource attach routine.
1130 acpi_sysres_alloc(device_t dev)
1132 struct resource *res;
1133 struct resource_list *rl;
1134 struct resource_list_entry *rle;
1136 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1141 * Probe/attach any sysresource devices. This would be unnecessary if we
1142 * had multi-pass probe/attach.
1144 if (device_get_children(dev, &children, &child_count) != 0)
1146 for (i = 0; i < child_count; i++) {
1147 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1148 device_probe_and_attach(children[i]);
1150 free(children, M_TEMP);
1152 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
1153 STAILQ_FOREACH(rle, rl, link) {
1154 if (rle->res != NULL) {
1155 device_printf(dev, "duplicate resource for %lx\n", rle->start);
1159 /* Only memory and IO resources are valid here. */
1160 switch (rle->type) {
1161 case SYS_RES_IOPORT:
1164 case SYS_RES_MEMORY:
1165 rm = &acpi_rman_mem;
1171 /* Pre-allocate resource and add to our rman pool. */
1172 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1173 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
1175 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1177 } else if (bootverbose)
1178 device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1179 rle->start, rle->count, rle->type);
1184 static char *pcilink_ids[] = { "PNP0C0F", NULL };
1185 static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1188 * Reserve declared resources for devices found during attach once system
1189 * resources have been allocated.
1192 acpi_reserve_resources(device_t dev)
1194 struct resource_list_entry *rle;
1195 struct resource_list *rl;
1196 struct acpi_device *ad;
1197 struct acpi_softc *sc;
1201 sc = device_get_softc(dev);
1202 if (device_get_children(dev, &children, &child_count) != 0)
1204 for (i = 0; i < child_count; i++) {
1205 ad = device_get_ivars(children[i]);
1208 /* Don't reserve system resources. */
1209 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1212 STAILQ_FOREACH(rle, rl, link) {
1214 * Don't reserve IRQ resources. There are many sticky things
1215 * to get right otherwise (e.g. IRQs for psm, atkbd, and HPET
1216 * when using legacy routing).
1218 if (rle->type == SYS_RES_IRQ)
1222 * Don't reserve the resource if it is already allocated.
1223 * The acpi_ec(4) driver can allocate its resources early
1224 * if ECDT is present.
1226 if (rle->res != NULL)
1230 * Try to reserve the resource from our parent. If this
1231 * fails because the resource is a system resource, just
1232 * let it be. The resource range is already reserved so
1233 * that other devices will not use it. If the driver
1234 * needs to allocate the resource, then
1235 * acpi_alloc_resource() will sub-alloc from the system
1238 resource_list_reserve(rl, dev, children[i], rle->type, &rle->rid,
1239 rle->start, rle->end, rle->count, 0);
1242 free(children, M_TEMP);
1243 sc->acpi_resources_reserved = 1;
1247 acpi_set_resource(device_t dev, device_t child, int type, int rid,
1248 u_long start, u_long count)
1250 struct acpi_softc *sc = device_get_softc(dev);
1251 struct acpi_device *ad = device_get_ivars(child);
1252 struct resource_list *rl = &ad->ad_rl;
1253 ACPI_DEVICE_INFO *devinfo;
1256 /* Ignore IRQ resources for PCI link devices. */
1257 if (type == SYS_RES_IRQ && ACPI_ID_PROBE(dev, child, pcilink_ids) != NULL)
1261 * Ignore most resources for PCI root bridges. Some BIOSes
1262 * incorrectly enumerate the memory ranges they decode as plain
1263 * memory resources instead of as ResourceProducer ranges. Other
1264 * BIOSes incorrectly list system resource entries for I/O ranges
1265 * under the PCI bridge. Do allow the one known-correct case on
1266 * x86 of a PCI bridge claiming the I/O ports used for PCI config
1269 if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) {
1270 if (ACPI_SUCCESS(AcpiGetObjectInfo(ad->ad_handle, &devinfo))) {
1271 if ((devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0) {
1272 #if defined(__i386__) || defined(__amd64__)
1273 if (!(type == SYS_RES_IOPORT && start == CONF1_ADDR_PORT))
1276 AcpiOsFree(devinfo);
1280 AcpiOsFree(devinfo);
1284 /* If the resource is already allocated, fail. */
1285 if (resource_list_busy(rl, type, rid))
1288 /* If the resource is already reserved, release it. */
1289 if (resource_list_reserved(rl, type, rid))
1290 resource_list_unreserve(rl, dev, child, type, rid);
1292 /* Add the resource. */
1293 end = (start + count - 1);
1294 resource_list_add(rl, type, rid, start, end, count);
1296 /* Don't reserve resources until the system resources are allocated. */
1297 if (!sc->acpi_resources_reserved)
1300 /* Don't reserve system resources. */
1301 if (ACPI_ID_PROBE(dev, child, sysres_ids) != NULL)
1305 * Don't reserve IRQ resources. There are many sticky things to
1306 * get right otherwise (e.g. IRQs for psm, atkbd, and HPET when
1307 * using legacy routing).
1309 if (type == SYS_RES_IRQ)
1313 * Reserve the resource.
1315 * XXX: Ignores failure for now. Failure here is probably a
1316 * BIOS/firmware bug?
1318 resource_list_reserve(rl, dev, child, type, &rid, start, end, count, 0);
1322 static struct resource *
1323 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
1324 u_long start, u_long end, u_long count, u_int flags)
1327 struct acpi_device *ad;
1328 struct resource_list_entry *rle;
1329 struct resource_list *rl;
1330 struct resource *res;
1331 int isdefault = (start == 0UL && end == ~0UL);
1334 * First attempt at allocating the resource. For direct children,
1335 * use resource_list_alloc() to handle reserved resources. For
1336 * other devices, pass the request up to our parent.
1338 if (bus == device_get_parent(child)) {
1339 ad = device_get_ivars(child);
1343 * Simulate the behavior of the ISA bus for direct children
1344 * devices. That is, if a non-default range is specified for
1345 * a resource that doesn't exist, use bus_set_resource() to
1346 * add the resource before allocating it. Note that these
1347 * resources will not be reserved.
1349 if (!isdefault && resource_list_find(rl, type, *rid) == NULL)
1350 resource_list_add(rl, type, *rid, start, end, count);
1351 res = resource_list_alloc(rl, bus, child, type, rid, start, end, count,
1353 if (res != NULL && type == SYS_RES_IRQ) {
1355 * Since bus_config_intr() takes immediate effect, we cannot
1356 * configure the interrupt associated with a device when we
1357 * parse the resources but have to defer it until a driver
1358 * actually allocates the interrupt via bus_alloc_resource().
1360 * XXX: Should we handle the lookup failing?
1362 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
1363 acpi_config_intr(child, &ares);
1367 * If this is an allocation of the "default" range for a given
1368 * RID, fetch the exact bounds for this resource from the
1369 * resource list entry to try to allocate the range from the
1370 * system resource regions.
1372 if (res == NULL && isdefault) {
1373 rle = resource_list_find(rl, type, *rid);
1381 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1382 start, end, count, flags);
1385 * If the first attempt failed and this is an allocation of a
1386 * specific range, try to satisfy the request via a suballocation
1387 * from our system resource regions.
1389 if (res == NULL && start + count - 1 == end)
1390 res = acpi_alloc_sysres(child, type, rid, start, end, count, flags);
1395 * Attempt to allocate a specific resource range from the system
1396 * resource ranges. Note that we only handle memory and I/O port
1400 acpi_alloc_sysres(device_t child, int type, int *rid, u_long start, u_long end,
1401 u_long count, u_int flags)
1404 struct resource *res;
1407 case SYS_RES_IOPORT:
1410 case SYS_RES_MEMORY:
1411 rm = &acpi_rman_mem;
1417 KASSERT(start + count - 1 == end, ("wildcard resource range"));
1418 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1423 rman_set_rid(res, *rid);
1425 /* If requested, activate the resource using the parent's method. */
1426 if (flags & RF_ACTIVE)
1427 if (bus_activate_resource(child, type, *rid, res) != 0) {
1428 rman_release_resource(res);
1436 acpi_is_resource_managed(int type, struct resource *r)
1439 /* We only handle memory and IO resources through rman. */
1441 case SYS_RES_IOPORT:
1442 return (rman_is_region_manager(r, &acpi_rman_io));
1443 case SYS_RES_MEMORY:
1444 return (rman_is_region_manager(r, &acpi_rman_mem));
1450 acpi_adjust_resource(device_t bus, device_t child, int type, struct resource *r,
1451 u_long start, u_long end)
1454 if (acpi_is_resource_managed(type, r))
1455 return (rman_adjust_resource(r, start, end));
1456 return (bus_generic_adjust_resource(bus, child, type, r, start, end));
1460 acpi_release_resource(device_t bus, device_t child, int type, int rid,
1466 * If this resource belongs to one of our internal managers,
1467 * deactivate it and release it to the local pool.
1469 if (acpi_is_resource_managed(type, r)) {
1470 if (rman_get_flags(r) & RF_ACTIVE) {
1471 ret = bus_deactivate_resource(child, type, rid, r);
1475 return (rman_release_resource(r));
1478 return (bus_generic_rl_release_resource(bus, child, type, rid, r));
1482 acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1484 struct resource_list *rl;
1486 rl = acpi_get_rlist(bus, child);
1487 if (resource_list_busy(rl, type, rid)) {
1488 device_printf(bus, "delete_resource: Resource still owned by child"
1489 " (type=%d, rid=%d)\n", type, rid);
1492 resource_list_unreserve(rl, bus, child, type, rid);
1493 resource_list_delete(rl, type, rid);
1496 /* Allocate an IO port or memory resource, given its GAS. */
1498 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1499 struct resource **res, u_int flags)
1501 int error, res_type;
1504 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1507 /* We only support memory and IO spaces. */
1508 switch (gas->SpaceId) {
1509 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1510 res_type = SYS_RES_MEMORY;
1512 case ACPI_ADR_SPACE_SYSTEM_IO:
1513 res_type = SYS_RES_IOPORT;
1516 return (EOPNOTSUPP);
1520 * If the register width is less than 8, assume the BIOS author means
1521 * it is a bit field and just allocate a byte.
1523 if (gas->BitWidth && gas->BitWidth < 8)
1526 /* Validate the address after we're sure we support the space. */
1527 if (gas->Address == 0 || gas->BitWidth == 0)
1530 bus_set_resource(dev, res_type, *rid, gas->Address,
1532 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1537 bus_delete_resource(dev, res_type, *rid);
1542 /* Probe _HID and _CID for compatible ISA PNP ids. */
1544 acpi_isa_get_logicalid(device_t dev)
1546 ACPI_DEVICE_INFO *devinfo;
1550 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1552 /* Fetch and validate the HID. */
1553 if ((h = acpi_get_handle(dev)) == NULL ||
1554 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1557 pnpid = (devinfo->Valid & ACPI_VALID_HID) != 0 &&
1558 devinfo->HardwareId.Length >= ACPI_EISAID_STRING_SIZE ?
1559 PNP_EISAID(devinfo->HardwareId.String) : 0;
1560 AcpiOsFree(devinfo);
1562 return_VALUE (pnpid);
1566 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1568 ACPI_DEVICE_INFO *devinfo;
1569 ACPI_PNP_DEVICE_ID *ids;
1574 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1578 /* Fetch and validate the CID */
1579 if ((h = acpi_get_handle(dev)) == NULL ||
1580 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1583 if ((devinfo->Valid & ACPI_VALID_CID) == 0) {
1584 AcpiOsFree(devinfo);
1588 if (devinfo->CompatibleIdList.Count < count)
1589 count = devinfo->CompatibleIdList.Count;
1590 ids = devinfo->CompatibleIdList.Ids;
1591 for (i = 0, valid = 0; i < count; i++)
1592 if (ids[i].Length >= ACPI_EISAID_STRING_SIZE &&
1593 strncmp(ids[i].String, "PNP", 3) == 0) {
1594 *pnpid++ = PNP_EISAID(ids[i].String);
1597 AcpiOsFree(devinfo);
1599 return_VALUE (valid);
1603 acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1609 h = acpi_get_handle(dev);
1610 if (ids == NULL || h == NULL)
1612 t = acpi_get_type(dev);
1613 if (t != ACPI_TYPE_DEVICE && t != ACPI_TYPE_PROCESSOR)
1616 /* Try to match one of the array of IDs with a HID or CID. */
1617 for (i = 0; ids[i] != NULL; i++) {
1618 if (acpi_MatchHid(h, ids[i]))
1625 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1626 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1631 h = ACPI_ROOT_OBJECT;
1632 else if ((h = acpi_get_handle(dev)) == NULL)
1633 return (AE_BAD_PARAMETER);
1634 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1638 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1640 struct acpi_softc *sc;
1645 handle = acpi_get_handle(dev);
1648 * XXX If we find these devices, don't try to power them down.
1649 * The serial and IRDA ports on my T23 hang the system when
1650 * set to D3 and it appears that such legacy devices may
1651 * need special handling in their drivers.
1653 if (dstate == NULL || handle == NULL ||
1654 acpi_MatchHid(handle, "PNP0500") ||
1655 acpi_MatchHid(handle, "PNP0501") ||
1656 acpi_MatchHid(handle, "PNP0502") ||
1657 acpi_MatchHid(handle, "PNP0510") ||
1658 acpi_MatchHid(handle, "PNP0511"))
1662 * Override next state with the value from _SxD, if present.
1663 * Note illegal _S0D is evaluated because some systems expect this.
1665 sc = device_get_softc(bus);
1666 snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1667 status = acpi_GetInteger(handle, sxd, dstate);
1668 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
1669 device_printf(dev, "failed to get %s on %s: %s\n", sxd,
1670 acpi_name(handle), AcpiFormatException(status));
1677 /* Callback arg for our implementation of walking the namespace. */
1678 struct acpi_device_scan_ctx {
1679 acpi_scan_cb_t user_fn;
1685 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1687 struct acpi_device_scan_ctx *ctx;
1688 device_t dev, old_dev;
1690 ACPI_OBJECT_TYPE type;
1693 * Skip this device if we think we'll have trouble with it or it is
1694 * the parent where the scan began.
1696 ctx = (struct acpi_device_scan_ctx *)arg;
1697 if (acpi_avoid(h) || h == ctx->parent)
1700 /* If this is not a valid device type (e.g., a method), skip it. */
1701 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1703 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1704 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1708 * Call the user function with the current device. If it is unchanged
1709 * afterwards, return. Otherwise, we update the handle to the new dev.
1711 old_dev = acpi_get_device(h);
1713 status = ctx->user_fn(h, &dev, level, ctx->arg);
1714 if (ACPI_FAILURE(status) || old_dev == dev)
1717 /* Remove the old child and its connection to the handle. */
1718 if (old_dev != NULL) {
1719 device_delete_child(device_get_parent(old_dev), old_dev);
1720 AcpiDetachData(h, acpi_fake_objhandler);
1723 /* Recreate the handle association if the user created a device. */
1725 AcpiAttachData(h, acpi_fake_objhandler, dev);
1731 acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1732 acpi_scan_cb_t user_fn, void *arg)
1735 struct acpi_device_scan_ctx ctx;
1737 if (acpi_disabled("children"))
1741 h = ACPI_ROOT_OBJECT;
1742 else if ((h = acpi_get_handle(dev)) == NULL)
1743 return (AE_BAD_PARAMETER);
1744 ctx.user_fn = user_fn;
1747 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1748 acpi_device_scan_cb, NULL, &ctx, NULL));
1752 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1753 * device power states since it's close enough to ACPI.
1756 acpi_set_powerstate(device_t child, int state)
1761 h = acpi_get_handle(child);
1762 if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX)
1767 /* Ignore errors if the power methods aren't present. */
1768 status = acpi_pwr_switch_consumer(h, state);
1769 if (ACPI_SUCCESS(status)) {
1771 device_printf(child, "set ACPI power state D%d on %s\n",
1772 state, acpi_name(h));
1773 } else if (status != AE_NOT_FOUND)
1774 device_printf(child,
1775 "failed to set ACPI power state D%d on %s: %s\n", state,
1776 acpi_name(h), AcpiFormatException(status));
1782 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1784 int result, cid_count, i;
1785 uint32_t lid, cids[8];
1787 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1790 * ISA-style drivers attached to ACPI may persist and
1791 * probe manually if we return ENOENT. We never want
1792 * that to happen, so don't ever return it.
1796 /* Scan the supplied IDs for a match */
1797 lid = acpi_isa_get_logicalid(child);
1798 cid_count = acpi_isa_get_compatid(child, cids, 8);
1799 while (ids && ids->ip_id) {
1800 if (lid == ids->ip_id) {
1804 for (i = 0; i < cid_count; i++) {
1805 if (cids[i] == ids->ip_id) {
1814 if (result == 0 && ids->ip_desc)
1815 device_set_desc(child, ids->ip_desc);
1817 return_VALUE (result);
1820 #if defined(__i386__) || defined(__amd64__)
1822 * Look for a MCFG table. If it is present, use the settings for
1823 * domain (segment) 0 to setup PCI config space access via the memory
1827 acpi_enable_pcie(void)
1829 ACPI_TABLE_HEADER *hdr;
1830 ACPI_MCFG_ALLOCATION *alloc, *end;
1833 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1834 if (ACPI_FAILURE(status))
1837 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1838 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1839 while (alloc < end) {
1840 if (alloc->PciSegment == 0) {
1841 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1842 alloc->EndBusNumber);
1851 * Scan all of the ACPI namespace and attach child devices.
1853 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1854 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1855 * However, in violation of the spec, some systems place their PCI link
1856 * devices in \, so we have to walk the whole namespace. We check the
1857 * type of namespace nodes, so this should be ok.
1860 acpi_probe_children(device_t bus)
1863 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1866 * Scan the namespace and insert placeholders for all the devices that
1867 * we find. We also probe/attach any early devices.
1869 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1870 * we want to create nodes for all devices, not just those that are
1871 * currently present. (This assumes that we don't want to create/remove
1872 * devices as they appear, which might be smarter.)
1874 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1875 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
1878 /* Pre-allocate resources for our rman from any sysresource devices. */
1879 acpi_sysres_alloc(bus);
1881 /* Reserve resources already allocated to children. */
1882 acpi_reserve_resources(bus);
1884 /* Create any static children by calling device identify methods. */
1885 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1886 bus_generic_probe(bus);
1888 /* Probe/attach all children, created statically and from the namespace. */
1889 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "acpi bus_generic_attach\n"));
1890 bus_generic_attach(bus);
1892 /* Attach wake sysctls. */
1893 acpi_wake_sysctl_walk(bus);
1895 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1900 * Determine the probe order for a given device.
1903 acpi_probe_order(ACPI_HANDLE handle, int *order)
1905 ACPI_OBJECT_TYPE type;
1909 * 1. I/O port and memory system resource holders
1910 * 2. Clocks and timers (to handle early accesses)
1911 * 3. Embedded controllers (to handle early accesses)
1912 * 4. PCI Link Devices
1914 AcpiGetType(handle, &type);
1915 if (type == ACPI_TYPE_PROCESSOR)
1917 else if (acpi_MatchHid(handle, "PNP0C01") ||
1918 acpi_MatchHid(handle, "PNP0C02"))
1920 else if (acpi_MatchHid(handle, "PNP0100") ||
1921 acpi_MatchHid(handle, "PNP0103") ||
1922 acpi_MatchHid(handle, "PNP0B00"))
1924 else if (acpi_MatchHid(handle, "PNP0C09"))
1926 else if (acpi_MatchHid(handle, "PNP0C0F"))
1931 * Evaluate a child device and determine whether we might attach a device to
1935 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1937 struct acpi_prw_data prw;
1938 ACPI_OBJECT_TYPE type;
1940 device_t bus, child;
1944 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1946 if (acpi_disabled("children"))
1947 return_ACPI_STATUS (AE_OK);
1949 /* Skip this device if we think we'll have trouble with it. */
1950 if (acpi_avoid(handle))
1951 return_ACPI_STATUS (AE_OK);
1953 bus = (device_t)context;
1954 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1955 handle_str = acpi_name(handle);
1957 case ACPI_TYPE_DEVICE:
1959 * Since we scan from \, be sure to skip system scope objects.
1960 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1961 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
1962 * during the intialization and \_TZ_ is to support Notify() on it.
1964 if (strcmp(handle_str, "\\_SB_") == 0 ||
1965 strcmp(handle_str, "\\_TZ_") == 0)
1967 if (acpi_parse_prw(handle, &prw) == 0)
1968 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
1971 * Ignore devices that do not have a _HID or _CID. They should
1972 * be discovered by other buses (e.g. the PCI bus driver).
1974 if (!acpi_has_hid(handle))
1977 case ACPI_TYPE_PROCESSOR:
1978 case ACPI_TYPE_THERMAL:
1979 case ACPI_TYPE_POWER:
1981 * Create a placeholder device for this node. Sort the
1982 * placeholder so that the probe/attach passes will run
1983 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1984 * are reserved for special objects (i.e., system
1987 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1988 order = level * 10 + ACPI_DEV_BASE_ORDER;
1989 acpi_probe_order(handle, &order);
1990 child = BUS_ADD_CHILD(bus, order, NULL, -1);
1994 /* Associate the handle with the device_t and vice versa. */
1995 acpi_set_handle(child, handle);
1996 AcpiAttachData(handle, acpi_fake_objhandler, child);
1999 * Check that the device is present. If it's not present,
2000 * leave it disabled (so that we have a device_t attached to
2001 * the handle, but we don't probe it).
2003 * XXX PCI link devices sometimes report "present" but not
2004 * "functional" (i.e. if disabled). Go ahead and probe them
2005 * anyway since we may enable them later.
2007 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
2008 /* Never disable PCI link devices. */
2009 if (acpi_MatchHid(handle, "PNP0C0F"))
2012 * Docking stations should remain enabled since the system
2013 * may be undocked at boot.
2015 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
2018 device_disable(child);
2023 * Get the device's resource settings and attach them.
2024 * Note that if the device has _PRS but no _CRS, we need
2025 * to decide when it's appropriate to try to configure the
2026 * device. Ignore the return value here; it's OK for the
2027 * device not to have any resources.
2029 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
2034 return_ACPI_STATUS (AE_OK);
2038 * AcpiAttachData() requires an object handler but never uses it. This is a
2039 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
2042 acpi_fake_objhandler(ACPI_HANDLE h, void *data)
2047 acpi_shutdown_final(void *arg, int howto)
2049 struct acpi_softc *sc = (struct acpi_softc *)arg;
2054 * XXX Shutdown code should only run on the BSP (cpuid 0).
2055 * Some chipsets do not power off the system correctly if called from
2058 if ((howto & RB_POWEROFF) != 0) {
2059 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
2060 if (ACPI_FAILURE(status)) {
2061 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2062 AcpiFormatException(status));
2065 device_printf(sc->acpi_dev, "Powering system off\n");
2066 intr = intr_disable();
2067 status = AcpiEnterSleepState(ACPI_STATE_S5);
2068 if (ACPI_FAILURE(status)) {
2070 device_printf(sc->acpi_dev, "power-off failed - %s\n",
2071 AcpiFormatException(status));
2075 device_printf(sc->acpi_dev, "power-off failed - timeout\n");
2077 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) {
2078 /* Reboot using the reset register. */
2079 status = AcpiReset();
2080 if (ACPI_SUCCESS(status)) {
2082 device_printf(sc->acpi_dev, "reset failed - timeout\n");
2083 } else if (status != AE_NOT_EXIST)
2084 device_printf(sc->acpi_dev, "reset failed - %s\n",
2085 AcpiFormatException(status));
2086 } else if (sc->acpi_do_disable && panicstr == NULL) {
2088 * Only disable ACPI if the user requested. On some systems, writing
2089 * the disable value to SMI_CMD hangs the system.
2091 device_printf(sc->acpi_dev, "Shutting down\n");
2097 acpi_enable_fixed_events(struct acpi_softc *sc)
2099 static int first_time = 1;
2101 /* Enable and clear fixed events and install handlers. */
2102 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
2103 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
2104 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
2105 acpi_event_power_button_sleep, sc);
2107 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
2109 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
2110 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
2111 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
2112 acpi_event_sleep_button_sleep, sc);
2114 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
2121 * Returns true if the device is actually present and should
2122 * be attached to. This requires the present, enabled, UI-visible
2123 * and diagnostics-passed bits to be set.
2126 acpi_DeviceIsPresent(device_t dev)
2128 ACPI_DEVICE_INFO *devinfo;
2132 if ((h = acpi_get_handle(dev)) == NULL ||
2133 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2136 /* If no _STA method, must be present */
2137 present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
2138 ACPI_DEVICE_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2140 AcpiOsFree(devinfo);
2145 * Returns true if the battery is actually present and inserted.
2148 acpi_BatteryIsPresent(device_t dev)
2150 ACPI_DEVICE_INFO *devinfo;
2154 if ((h = acpi_get_handle(dev)) == NULL ||
2155 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2158 /* If no _STA method, must be present */
2159 present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
2160 ACPI_BATTERY_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2162 AcpiOsFree(devinfo);
2167 * Returns true if a device has at least one valid device ID.
2170 acpi_has_hid(ACPI_HANDLE h)
2172 ACPI_DEVICE_INFO *devinfo;
2176 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2180 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
2182 else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
2183 if (devinfo->CompatibleIdList.Count > 0)
2186 AcpiOsFree(devinfo);
2191 * Match a HID string against a handle
2194 acpi_MatchHid(ACPI_HANDLE h, const char *hid)
2196 ACPI_DEVICE_INFO *devinfo;
2200 if (hid == NULL || h == NULL ||
2201 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2205 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
2206 strcmp(hid, devinfo->HardwareId.String) == 0)
2208 else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
2209 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
2210 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
2216 AcpiOsFree(devinfo);
2221 * Return the handle of a named object within our scope, ie. that of (parent)
2222 * or one if its parents.
2225 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
2230 /* Walk back up the tree to the root */
2232 status = AcpiGetHandle(parent, path, &r);
2233 if (ACPI_SUCCESS(status)) {
2237 /* XXX Return error here? */
2238 if (status != AE_NOT_FOUND)
2240 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
2241 return (AE_NOT_FOUND);
2247 * Allocate a buffer with a preset data size.
2250 acpi_AllocBuffer(int size)
2254 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
2257 buf->Pointer = (void *)(buf + 1);
2262 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
2265 ACPI_OBJECT_LIST args;
2267 arg1.Type = ACPI_TYPE_INTEGER;
2268 arg1.Integer.Value = number;
2270 args.Pointer = &arg1;
2272 return (AcpiEvaluateObject(handle, path, &args, NULL));
2276 * Evaluate a path that should return an integer.
2279 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
2286 handle = ACPI_ROOT_OBJECT;
2289 * Assume that what we've been pointed at is an Integer object, or
2290 * a method that will return an Integer.
2292 buf.Pointer = ¶m;
2293 buf.Length = sizeof(param);
2294 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2295 if (ACPI_SUCCESS(status)) {
2296 if (param.Type == ACPI_TYPE_INTEGER)
2297 *number = param.Integer.Value;
2303 * In some applications, a method that's expected to return an Integer
2304 * may instead return a Buffer (probably to simplify some internal
2305 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
2306 * convert it into an Integer as best we can.
2310 if (status == AE_BUFFER_OVERFLOW) {
2311 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
2312 status = AE_NO_MEMORY;
2314 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2315 if (ACPI_SUCCESS(status))
2316 status = acpi_ConvertBufferToInteger(&buf, number);
2317 AcpiOsFree(buf.Pointer);
2324 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2330 p = (ACPI_OBJECT *)bufp->Pointer;
2331 if (p->Type == ACPI_TYPE_INTEGER) {
2332 *number = p->Integer.Value;
2335 if (p->Type != ACPI_TYPE_BUFFER)
2337 if (p->Buffer.Length > sizeof(int))
2338 return (AE_BAD_DATA);
2341 val = p->Buffer.Pointer;
2342 for (i = 0; i < p->Buffer.Length; i++)
2343 *number += val[i] << (i * 8);
2348 * Iterate over the elements of an a package object, calling the supplied
2349 * function for each element.
2351 * XXX possible enhancement might be to abort traversal on error.
2354 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2355 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2360 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2361 return (AE_BAD_PARAMETER);
2363 /* Iterate over components */
2365 comp = pkg->Package.Elements;
2366 for (; i < pkg->Package.Count; i++, comp++)
2373 * Find the (index)th resource object in a set.
2376 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2381 rp = (ACPI_RESOURCE *)buf->Pointer;
2385 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2386 return (AE_BAD_PARAMETER);
2388 /* Check for terminator */
2389 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2390 return (AE_NOT_FOUND);
2391 rp = ACPI_NEXT_RESOURCE(rp);
2400 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2402 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2403 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2404 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2407 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2410 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2415 /* Initialise the buffer if necessary. */
2416 if (buf->Pointer == NULL) {
2417 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2418 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2419 return (AE_NO_MEMORY);
2420 rp = (ACPI_RESOURCE *)buf->Pointer;
2421 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2422 rp->Length = ACPI_RS_SIZE_MIN;
2428 * Scan the current buffer looking for the terminator.
2429 * This will either find the terminator or hit the end
2430 * of the buffer and return an error.
2432 rp = (ACPI_RESOURCE *)buf->Pointer;
2434 /* Range check, don't go outside the buffer */
2435 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2436 return (AE_BAD_PARAMETER);
2437 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2439 rp = ACPI_NEXT_RESOURCE(rp);
2443 * Check the size of the buffer and expand if required.
2446 * size of existing resources before terminator +
2447 * size of new resource and header +
2448 * size of terminator.
2450 * Note that this loop should really only run once, unless
2451 * for some reason we are stuffing a *really* huge resource.
2453 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2454 res->Length + ACPI_RS_SIZE_NO_DATA +
2455 ACPI_RS_SIZE_MIN) >= buf->Length) {
2456 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2457 return (AE_NO_MEMORY);
2458 bcopy(buf->Pointer, newp, buf->Length);
2459 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2460 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
2461 AcpiOsFree(buf->Pointer);
2462 buf->Pointer = newp;
2463 buf->Length += buf->Length;
2466 /* Insert the new resource. */
2467 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2469 /* And add the terminator. */
2470 rp = ACPI_NEXT_RESOURCE(rp);
2471 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2472 rp->Length = ACPI_RS_SIZE_MIN;
2478 * Set interrupt model.
2481 acpi_SetIntrModel(int model)
2484 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2488 * Walk subtables of a table and call a callback routine for each
2489 * subtable. The caller should provide the first subtable and a
2490 * pointer to the end of the table. This can be used to walk tables
2491 * such as MADT and SRAT that use subtable entries.
2494 acpi_walk_subtables(void *first, void *end, acpi_subtable_handler *handler,
2497 ACPI_SUBTABLE_HEADER *entry;
2499 for (entry = first; (void *)entry < end; ) {
2500 /* Avoid an infinite loop if we hit a bogus entry. */
2501 if (entry->Length < sizeof(ACPI_SUBTABLE_HEADER))
2504 handler(entry, arg);
2505 entry = ACPI_ADD_PTR(ACPI_SUBTABLE_HEADER, entry, entry->Length);
2510 * DEPRECATED. This interface has serious deficiencies and will be
2513 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2514 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2517 acpi_SetSleepState(struct acpi_softc *sc, int state)
2522 device_printf(sc->acpi_dev,
2523 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2526 return (acpi_EnterSleepState(sc, state));
2529 #if defined(__amd64__) || defined(__i386__)
2531 acpi_sleep_force_task(void *context)
2533 struct acpi_softc *sc = (struct acpi_softc *)context;
2535 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2536 device_printf(sc->acpi_dev, "force sleep state S%d failed\n",
2537 sc->acpi_next_sstate);
2541 acpi_sleep_force(void *arg)
2543 struct acpi_softc *sc = (struct acpi_softc *)arg;
2545 device_printf(sc->acpi_dev,
2546 "suspend request timed out, forcing sleep now\n");
2548 * XXX Suspending from callout causes freezes in DEVICE_SUSPEND().
2549 * Suspend from acpi_task thread instead.
2551 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
2552 acpi_sleep_force_task, sc)))
2553 device_printf(sc->acpi_dev, "AcpiOsExecute() for sleeping failed\n");
2558 * Request that the system enter the given suspend state. All /dev/apm
2559 * devices and devd(8) will be notified. Userland then has a chance to
2560 * save state and acknowledge the request. The system sleeps once all
2564 acpi_ReqSleepState(struct acpi_softc *sc, int state)
2566 #if defined(__amd64__) || defined(__i386__)
2567 struct apm_clone_data *clone;
2570 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
2572 if (!acpi_sleep_states[state])
2573 return (EOPNOTSUPP);
2575 /* If a suspend request is already in progress, just return. */
2576 if (sc->acpi_next_sstate != 0) {
2580 /* Wait until sleep is enabled. */
2581 while (sc->acpi_sleep_disabled) {
2587 sc->acpi_next_sstate = state;
2589 /* S5 (soft-off) should be entered directly with no waiting. */
2590 if (state == ACPI_STATE_S5) {
2592 status = acpi_EnterSleepState(sc, state);
2593 return (ACPI_SUCCESS(status) ? 0 : ENXIO);
2596 /* Record the pending state and notify all apm devices. */
2597 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2598 clone->notify_status = APM_EV_NONE;
2599 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
2600 selwakeuppri(&clone->sel_read, PZERO);
2601 KNOTE_LOCKED(&clone->sel_read.si_note, 0);
2605 /* If devd(8) is not running, immediately enter the sleep state. */
2606 if (!devctl_process_running()) {
2608 status = acpi_EnterSleepState(sc, state);
2609 return (ACPI_SUCCESS(status) ? 0 : ENXIO);
2613 * Set a timeout to fire if userland doesn't ack the suspend request
2614 * in time. This way we still eventually go to sleep if we were
2615 * overheating or running low on battery, even if userland is hung.
2616 * We cancel this timeout once all userland acks are in or the
2617 * suspend request is aborted.
2619 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2622 /* Now notify devd(8) also. */
2623 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2627 /* This platform does not support acpi suspend/resume. */
2628 return (EOPNOTSUPP);
2633 * Acknowledge (or reject) a pending sleep state. The caller has
2634 * prepared for suspend and is now ready for it to proceed. If the
2635 * error argument is non-zero, it indicates suspend should be cancelled
2636 * and gives an errno value describing why. Once all votes are in,
2637 * we suspend the system.
2640 acpi_AckSleepState(struct apm_clone_data *clone, int error)
2642 #if defined(__amd64__) || defined(__i386__)
2643 struct acpi_softc *sc;
2646 /* If no pending sleep state, return an error. */
2648 sc = clone->acpi_sc;
2649 if (sc->acpi_next_sstate == 0) {
2654 /* Caller wants to abort suspend process. */
2656 sc->acpi_next_sstate = 0;
2657 callout_stop(&sc->susp_force_to);
2658 device_printf(sc->acpi_dev,
2659 "listener on %s cancelled the pending suspend\n",
2660 devtoname(clone->cdev));
2666 * Mark this device as acking the suspend request. Then, walk through
2667 * all devices, seeing if they agree yet. We only count devices that
2668 * are writable since read-only devices couldn't ack the request.
2671 clone->notify_status = APM_EV_ACKED;
2672 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2673 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2674 clone->notify_status != APM_EV_ACKED) {
2680 /* If all devices have voted "yes", we will suspend now. */
2682 callout_stop(&sc->susp_force_to);
2686 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2691 /* This platform does not support acpi suspend/resume. */
2692 return (EOPNOTSUPP);
2697 acpi_sleep_enable(void *arg)
2699 struct acpi_softc *sc = (struct acpi_softc *)arg;
2701 ACPI_LOCK_ASSERT(acpi);
2703 /* Reschedule if the system is not fully up and running. */
2704 if (!AcpiGbl_SystemAwakeAndRunning) {
2705 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
2709 sc->acpi_sleep_disabled = FALSE;
2713 acpi_sleep_disable(struct acpi_softc *sc)
2717 /* Fail if the system is not fully up and running. */
2718 if (!AcpiGbl_SystemAwakeAndRunning)
2722 status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK;
2723 sc->acpi_sleep_disabled = TRUE;
2729 enum acpi_sleep_state {
2732 ACPI_SS_DEV_SUSPEND,
2738 * Enter the desired system sleep state.
2740 * Currently we support S1-S5 but S4 is only S4BIOS
2743 acpi_EnterSleepState(struct acpi_softc *sc, int state)
2747 ACPI_EVENT_STATUS power_button_status;
2748 enum acpi_sleep_state slp_state;
2751 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2753 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
2754 return_ACPI_STATUS (AE_BAD_PARAMETER);
2755 if (!acpi_sleep_states[state]) {
2756 device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n",
2758 return (AE_SUPPORT);
2761 /* Re-entry once we're suspending is not allowed. */
2762 status = acpi_sleep_disable(sc);
2763 if (ACPI_FAILURE(status)) {
2764 device_printf(sc->acpi_dev,
2765 "suspend request ignored (not ready yet)\n");
2769 if (state == ACPI_STATE_S5) {
2771 * Shut down cleanly and power off. This will call us back through the
2772 * shutdown handlers.
2774 shutdown_nice(RB_POWEROFF);
2775 return_ACPI_STATUS (AE_OK);
2778 EVENTHANDLER_INVOKE(power_suspend_early);
2780 EVENTHANDLER_INVOKE(power_suspend);
2783 thread_lock(curthread);
2784 sched_bind(curthread, 0);
2785 thread_unlock(curthread);
2789 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2790 * drivers need this.
2794 slp_state = ACPI_SS_NONE;
2796 sc->acpi_sstate = state;
2798 /* Enable any GPEs as appropriate and requested by the user. */
2799 acpi_wake_prep_walk(state);
2800 slp_state = ACPI_SS_GPE_SET;
2803 * Inform all devices that we are going to sleep. If at least one
2804 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2806 * XXX Note that a better two-pass approach with a 'veto' pass
2807 * followed by a "real thing" pass would be better, but the current
2808 * bus interface does not provide for this.
2810 if (DEVICE_SUSPEND(root_bus) != 0) {
2811 device_printf(sc->acpi_dev, "device_suspend failed\n");
2814 slp_state = ACPI_SS_DEV_SUSPEND;
2816 /* If testing device suspend only, back out of everything here. */
2817 if (acpi_susp_bounce)
2820 status = AcpiEnterSleepStatePrep(state);
2821 if (ACPI_FAILURE(status)) {
2822 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2823 AcpiFormatException(status));
2826 slp_state = ACPI_SS_SLP_PREP;
2828 if (sc->acpi_sleep_delay > 0)
2829 DELAY(sc->acpi_sleep_delay * 1000000);
2831 intr = intr_disable();
2832 if (state != ACPI_STATE_S1) {
2833 sleep_result = acpi_sleep_machdep(sc, state);
2834 acpi_wakeup_machdep(sc, state, sleep_result, 0);
2837 * XXX According to ACPI specification SCI_EN bit should be restored
2838 * by ACPI platform (BIOS, firmware) to its pre-sleep state.
2839 * Unfortunately some BIOSes fail to do that and that leads to
2840 * unexpected and serious consequences during wake up like a system
2841 * getting stuck in SMI handlers.
2842 * This hack is picked up from Linux, which claims that it follows
2845 if (sleep_result == 1 && state != ACPI_STATE_S4)
2846 AcpiWriteBitRegister(ACPI_BITREG_SCI_ENABLE, ACPI_ENABLE_EVENT);
2848 AcpiLeaveSleepStatePrep(state);
2850 if (sleep_result == 1 && state == ACPI_STATE_S3) {
2852 * Prevent mis-interpretation of the wakeup by power button
2853 * as a request for power off.
2854 * Ideally we should post an appropriate wakeup event,
2855 * perhaps using acpi_event_power_button_wake or alike.
2857 * Clearing of power button status after wakeup is mandated
2858 * by ACPI specification in section "Fixed Power Button".
2860 * XXX As of ACPICA 20121114 AcpiGetEventStatus provides
2861 * status as 0/1 corressponding to inactive/active despite
2862 * its type being ACPI_EVENT_STATUS. In other words,
2863 * we should not test for ACPI_EVENT_FLAG_SET for time being.
2865 if (ACPI_SUCCESS(AcpiGetEventStatus(ACPI_EVENT_POWER_BUTTON,
2866 &power_button_status)) && power_button_status != 0) {
2867 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
2868 device_printf(sc->acpi_dev,
2869 "cleared fixed power button status\n");
2875 /* call acpi_wakeup_machdep() again with interrupt enabled */
2876 acpi_wakeup_machdep(sc, state, sleep_result, 1);
2878 if (sleep_result == -1)
2881 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2882 if (state == ACPI_STATE_S4)
2885 status = AcpiEnterSleepState(state);
2886 AcpiLeaveSleepStatePrep(state);
2888 if (ACPI_FAILURE(status)) {
2889 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2890 AcpiFormatException(status));
2894 slp_state = ACPI_SS_SLEPT;
2897 * Back out state according to how far along we got in the suspend
2898 * process. This handles both the error and success cases.
2901 if (slp_state >= ACPI_SS_GPE_SET) {
2902 acpi_wake_prep_walk(state);
2903 sc->acpi_sstate = ACPI_STATE_S0;
2905 if (slp_state >= ACPI_SS_DEV_SUSPEND)
2906 DEVICE_RESUME(root_bus);
2907 if (slp_state >= ACPI_SS_SLP_PREP)
2908 AcpiLeaveSleepState(state);
2909 if (slp_state >= ACPI_SS_SLEPT) {
2910 acpi_resync_clock(sc);
2911 acpi_enable_fixed_events(sc);
2913 sc->acpi_next_sstate = 0;
2918 thread_lock(curthread);
2919 sched_unbind(curthread);
2920 thread_unlock(curthread);
2925 EVENTHANDLER_INVOKE(power_resume);
2927 /* Allow another sleep request after a while. */
2928 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
2930 /* Run /etc/rc.resume after we are back. */
2931 if (devctl_process_running())
2932 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2934 return_ACPI_STATUS (status);
2938 acpi_resync_clock(struct acpi_softc *sc)
2941 if (!acpi_reset_clock)
2945 * Warm up timecounter again and reset system clock.
2947 (void)timecounter->tc_get_timecount(timecounter);
2948 (void)timecounter->tc_get_timecount(timecounter);
2949 inittodr(time_second + sc->acpi_sleep_delay);
2953 /* Enable or disable the device's wake GPE. */
2955 acpi_wake_set_enable(device_t dev, int enable)
2957 struct acpi_prw_data prw;
2961 /* Make sure the device supports waking the system and get the GPE. */
2962 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2965 flags = acpi_get_flags(dev);
2967 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
2969 if (ACPI_FAILURE(status)) {
2970 device_printf(dev, "enable wake failed\n");
2973 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2975 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
2977 if (ACPI_FAILURE(status)) {
2978 device_printf(dev, "disable wake failed\n");
2981 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2988 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
2990 struct acpi_prw_data prw;
2993 /* Check that this is a wake-capable device and get its GPE. */
2994 if (acpi_parse_prw(handle, &prw) != 0)
2996 dev = acpi_get_device(handle);
2999 * The destination sleep state must be less than (i.e., higher power)
3000 * or equal to the value specified by _PRW. If this GPE cannot be
3001 * enabled for the next sleep state, then disable it. If it can and
3002 * the user requested it be enabled, turn on any required power resources
3005 if (sstate > prw.lowest_wake) {
3006 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
3008 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
3009 acpi_name(handle), sstate);
3010 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
3011 acpi_pwr_wake_enable(handle, 1);
3012 acpi_SetInteger(handle, "_PSW", 1);
3014 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
3015 acpi_name(handle), sstate);
3022 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
3024 struct acpi_prw_data prw;
3028 * Check that this is a wake-capable device and get its GPE. Return
3029 * now if the user didn't enable this device for wake.
3031 if (acpi_parse_prw(handle, &prw) != 0)
3033 dev = acpi_get_device(handle);
3034 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
3038 * If this GPE couldn't be enabled for the previous sleep state, it was
3039 * disabled before going to sleep so re-enable it. If it was enabled,
3040 * clear _PSW and turn off any power resources it used.
3042 if (sstate > prw.lowest_wake) {
3043 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
3045 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
3047 acpi_SetInteger(handle, "_PSW", 0);
3048 acpi_pwr_wake_enable(handle, 0);
3050 device_printf(dev, "run_prep cleaned up for %s\n",
3058 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
3062 /* If suspending, run the sleep prep function, otherwise wake. */
3063 sstate = *(int *)context;
3064 if (AcpiGbl_SystemAwakeAndRunning)
3065 acpi_wake_sleep_prep(handle, sstate);
3067 acpi_wake_run_prep(handle, sstate);
3071 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
3073 acpi_wake_prep_walk(int sstate)
3075 ACPI_HANDLE sb_handle;
3077 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
3078 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
3079 acpi_wake_prep, NULL, &sstate, NULL);
3083 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
3085 acpi_wake_sysctl_walk(device_t dev)
3087 int error, i, numdevs;
3092 error = device_get_children(dev, &devlist, &numdevs);
3093 if (error != 0 || numdevs == 0) {
3095 free(devlist, M_TEMP);
3098 for (i = 0; i < numdevs; i++) {
3100 acpi_wake_sysctl_walk(child);
3101 if (!device_is_attached(child))
3103 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
3104 if (ACPI_SUCCESS(status)) {
3105 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
3106 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
3107 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
3108 acpi_wake_set_sysctl, "I", "Device set to wake the system");
3111 free(devlist, M_TEMP);
3116 /* Enable or disable wake from userland. */
3118 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
3123 dev = (device_t)arg1;
3124 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
3126 error = sysctl_handle_int(oidp, &enable, 0, req);
3127 if (error != 0 || req->newptr == NULL)
3129 if (enable != 0 && enable != 1)
3132 return (acpi_wake_set_enable(dev, enable));
3135 /* Parse a device's _PRW into a structure. */
3137 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
3140 ACPI_BUFFER prw_buffer;
3141 ACPI_OBJECT *res, *res2;
3142 int error, i, power_count;
3144 if (h == NULL || prw == NULL)
3148 * The _PRW object (7.2.9) is only required for devices that have the
3149 * ability to wake the system from a sleeping state.
3152 prw_buffer.Pointer = NULL;
3153 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
3154 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
3155 if (ACPI_FAILURE(status))
3157 res = (ACPI_OBJECT *)prw_buffer.Pointer;
3160 if (!ACPI_PKG_VALID(res, 2))
3164 * Element 1 of the _PRW object:
3165 * The lowest power system sleeping state that can be entered while still
3166 * providing wake functionality. The sleeping state being entered must
3167 * be less than (i.e., higher power) or equal to this value.
3169 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
3173 * Element 0 of the _PRW object:
3175 switch (res->Package.Elements[0].Type) {
3176 case ACPI_TYPE_INTEGER:
3178 * If the data type of this package element is numeric, then this
3179 * _PRW package element is the bit index in the GPEx_EN, in the
3180 * GPE blocks described in the FADT, of the enable bit that is
3181 * enabled for the wake event.
3183 prw->gpe_handle = NULL;
3184 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
3187 case ACPI_TYPE_PACKAGE:
3189 * If the data type of this package element is a package, then this
3190 * _PRW package element is itself a package containing two
3191 * elements. The first is an object reference to the GPE Block
3192 * device that contains the GPE that will be triggered by the wake
3193 * event. The second element is numeric and it contains the bit
3194 * index in the GPEx_EN, in the GPE Block referenced by the
3195 * first element in the package, of the enable bit that is enabled for
3198 * For example, if this field is a package then it is of the form:
3199 * Package() {\_SB.PCI0.ISA.GPE, 2}
3201 res2 = &res->Package.Elements[0];
3202 if (!ACPI_PKG_VALID(res2, 2))
3204 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
3205 if (prw->gpe_handle == NULL)
3207 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
3215 /* Elements 2 to N of the _PRW object are power resources. */
3216 power_count = res->Package.Count - 2;
3217 if (power_count > ACPI_PRW_MAX_POWERRES) {
3218 printf("ACPI device %s has too many power resources\n", acpi_name(h));
3221 prw->power_res_count = power_count;
3222 for (i = 0; i < power_count; i++)
3223 prw->power_res[i] = res->Package.Elements[i];
3226 if (prw_buffer.Pointer != NULL)
3227 AcpiOsFree(prw_buffer.Pointer);
3232 * ACPI Event Handlers
3235 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
3238 acpi_system_eventhandler_sleep(void *arg, int state)
3240 struct acpi_softc *sc = (struct acpi_softc *)arg;
3243 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
3245 /* Check if button action is disabled or unknown. */
3246 if (state == ACPI_STATE_UNKNOWN)
3249 /* Request that the system prepare to enter the given suspend state. */
3250 ret = acpi_ReqSleepState(sc, state);
3252 device_printf(sc->acpi_dev,
3253 "request to enter state S%d failed (err %d)\n", state, ret);
3259 acpi_system_eventhandler_wakeup(void *arg, int state)
3262 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
3264 /* Currently, nothing to do for wakeup. */
3270 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
3273 acpi_invoke_sleep_eventhandler(void *context)
3276 EVENTHANDLER_INVOKE(acpi_sleep_event, *(int *)context);
3280 acpi_invoke_wake_eventhandler(void *context)
3283 EVENTHANDLER_INVOKE(acpi_wakeup_event, *(int *)context);
3287 acpi_event_power_button_sleep(void *context)
3289 struct acpi_softc *sc = (struct acpi_softc *)context;
3291 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3293 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3294 acpi_invoke_sleep_eventhandler, &sc->acpi_power_button_sx)))
3295 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3296 return_VALUE (ACPI_INTERRUPT_HANDLED);
3300 acpi_event_power_button_wake(void *context)
3302 struct acpi_softc *sc = (struct acpi_softc *)context;
3304 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3306 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3307 acpi_invoke_wake_eventhandler, &sc->acpi_power_button_sx)))
3308 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3309 return_VALUE (ACPI_INTERRUPT_HANDLED);
3313 acpi_event_sleep_button_sleep(void *context)
3315 struct acpi_softc *sc = (struct acpi_softc *)context;
3317 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3319 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3320 acpi_invoke_sleep_eventhandler, &sc->acpi_sleep_button_sx)))
3321 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3322 return_VALUE (ACPI_INTERRUPT_HANDLED);
3326 acpi_event_sleep_button_wake(void *context)
3328 struct acpi_softc *sc = (struct acpi_softc *)context;
3330 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3332 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3333 acpi_invoke_wake_eventhandler, &sc->acpi_sleep_button_sx)))
3334 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3335 return_VALUE (ACPI_INTERRUPT_HANDLED);
3339 * XXX This static buffer is suboptimal. There is no locking so only
3340 * use this for single-threaded callers.
3343 acpi_name(ACPI_HANDLE handle)
3346 static char data[256];
3348 buf.Length = sizeof(data);
3351 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
3353 return ("(unknown)");
3357 * Debugging/bug-avoidance. Avoid trying to fetch info on various
3358 * parts of the namespace.
3361 acpi_avoid(ACPI_HANDLE handle)
3363 char *cp, *env, *np;
3366 np = acpi_name(handle);
3369 if ((env = kern_getenv("debug.acpi.avoid")) == NULL)
3372 /* Scan the avoid list checking for a match */
3375 while (*cp != 0 && isspace(*cp))
3380 while (cp[len] != 0 && !isspace(cp[len]))
3382 if (!strncmp(cp, np, len)) {
3394 * Debugging/bug-avoidance. Disable ACPI subsystem components.
3397 acpi_disabled(char *subsys)
3402 if ((env = kern_getenv("debug.acpi.disabled")) == NULL)
3404 if (strcmp(env, "all") == 0) {
3409 /* Scan the disable list, checking for a match. */
3412 while (*cp != '\0' && isspace(*cp))
3417 while (cp[len] != '\0' && !isspace(cp[len]))
3419 if (strncmp(cp, subsys, len) == 0) {
3431 acpi_lookup(void *arg, const char *name, device_t *dev)
3439 * Allow any handle name that is specified as an absolute path and
3440 * starts with '\'. We could restrict this to \_SB and friends,
3441 * but see acpi_probe_children() for notes on why we scan the entire
3442 * namespace for devices.
3444 * XXX: The pathname argument to AcpiGetHandle() should be fixed to
3447 if (name[0] != '\\')
3449 if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, __DECONST(char *, name),
3452 *dev = acpi_get_device(handle);
3456 * Control interface.
3458 * We multiplex ioctls for all participating ACPI devices here. Individual
3459 * drivers wanting to be accessible via /dev/acpi should use the
3460 * register/deregister interface to make their handlers visible.
3462 struct acpi_ioctl_hook
3464 TAILQ_ENTRY(acpi_ioctl_hook) link;
3470 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
3471 static int acpi_ioctl_hooks_initted;
3474 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
3476 struct acpi_ioctl_hook *hp;
3478 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
3485 if (acpi_ioctl_hooks_initted == 0) {
3486 TAILQ_INIT(&acpi_ioctl_hooks);
3487 acpi_ioctl_hooks_initted = 1;
3489 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
3496 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
3498 struct acpi_ioctl_hook *hp;
3501 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
3502 if (hp->cmd == cmd && hp->fn == fn)
3506 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
3507 free(hp, M_ACPIDEV);
3513 acpiopen(struct cdev *dev, int flag, int fmt, struct thread *td)
3519 acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td)
3525 acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
3527 struct acpi_softc *sc;
3528 struct acpi_ioctl_hook *hp;
3536 * Scan the list of registered ioctls, looking for handlers.
3539 if (acpi_ioctl_hooks_initted)
3540 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3546 return (hp->fn(cmd, addr, hp->arg));
3549 * Core ioctls are not permitted for non-writable user.
3550 * Currently, other ioctls just fetch information.
3551 * Not changing system behavior.
3553 if ((flag & FWRITE) == 0)
3556 /* Core system ioctls. */
3558 case ACPIIO_REQSLPSTATE:
3559 state = *(int *)addr;
3560 if (state != ACPI_STATE_S5)
3561 return (acpi_ReqSleepState(sc, state));
3562 device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n");
3565 case ACPIIO_ACKSLPSTATE:
3566 error = *(int *)addr;
3567 error = acpi_AckSleepState(sc->acpi_clone, error);
3569 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3570 state = *(int *)addr;
3571 if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX)
3573 if (!acpi_sleep_states[state])
3574 return (EOPNOTSUPP);
3575 if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
3587 acpi_sname2sstate(const char *sname)
3591 if (toupper(sname[0]) == 'S') {
3592 sstate = sname[1] - '0';
3593 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 &&
3596 } else if (strcasecmp(sname, "NONE") == 0)
3597 return (ACPI_STATE_UNKNOWN);
3602 acpi_sstate2sname(int sstate)
3604 static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" };
3606 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5)
3607 return (snames[sstate]);
3608 else if (sstate == ACPI_STATE_UNKNOWN)
3614 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3620 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3621 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
3622 if (acpi_sleep_states[state])
3623 sbuf_printf(&sb, "%s ", acpi_sstate2sname(state));
3626 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3632 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3634 char sleep_state[10];
3635 int error, new_state, old_state;
3637 old_state = *(int *)oidp->oid_arg1;
3638 strlcpy(sleep_state, acpi_sstate2sname(old_state), sizeof(sleep_state));
3639 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3640 if (error == 0 && req->newptr != NULL) {
3641 new_state = acpi_sname2sstate(sleep_state);
3642 if (new_state < ACPI_STATE_S1)
3644 if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state])
3645 return (EOPNOTSUPP);
3646 if (new_state != old_state)
3647 *(int *)oidp->oid_arg1 = new_state;
3652 /* Inform devctl(4) when we receive a Notify. */
3654 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3656 char notify_buf[16];
3657 ACPI_BUFFER handle_buf;
3660 if (subsystem == NULL)
3663 handle_buf.Pointer = NULL;
3664 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3665 status = AcpiNsHandleToPathname(h, &handle_buf);
3666 if (ACPI_FAILURE(status))
3668 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
3669 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
3670 AcpiOsFree(handle_buf.Pointer);
3675 * Support for parsing debug options from the kernel environment.
3677 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3678 * by specifying the names of the bits in the debug.acpi.layer and
3679 * debug.acpi.level environment variables. Bits may be unset by
3680 * prefixing the bit name with !.
3688 static struct debugtag dbg_layer[] = {
3689 {"ACPI_UTILITIES", ACPI_UTILITIES},
3690 {"ACPI_HARDWARE", ACPI_HARDWARE},
3691 {"ACPI_EVENTS", ACPI_EVENTS},
3692 {"ACPI_TABLES", ACPI_TABLES},
3693 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3694 {"ACPI_PARSER", ACPI_PARSER},
3695 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3696 {"ACPI_EXECUTER", ACPI_EXECUTER},
3697 {"ACPI_RESOURCES", ACPI_RESOURCES},
3698 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3699 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3700 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3701 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3703 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3704 {"ACPI_BATTERY", ACPI_BATTERY},
3705 {"ACPI_BUS", ACPI_BUS},
3706 {"ACPI_BUTTON", ACPI_BUTTON},
3707 {"ACPI_EC", ACPI_EC},
3708 {"ACPI_FAN", ACPI_FAN},
3709 {"ACPI_POWERRES", ACPI_POWERRES},
3710 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3711 {"ACPI_THERMAL", ACPI_THERMAL},
3712 {"ACPI_TIMER", ACPI_TIMER},
3713 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3717 static struct debugtag dbg_level[] = {
3718 {"ACPI_LV_INIT", ACPI_LV_INIT},
3719 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3720 {"ACPI_LV_INFO", ACPI_LV_INFO},
3721 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR},
3722 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3724 /* Trace verbosity level 1 [Standard Trace Level] */
3725 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3726 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3727 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3728 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3729 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3730 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3731 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3732 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3733 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3734 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3735 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3736 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3737 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3738 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3739 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3741 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3742 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3743 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3744 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3745 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3746 {"ACPI_LV_ALL", ACPI_LV_ALL},
3748 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3749 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3750 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3751 {"ACPI_LV_IO", ACPI_LV_IO},
3752 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3753 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3755 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3756 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
3757 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
3758 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
3759 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
3760 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
3765 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
3777 while (*ep && !isspace(*ep))
3788 for (i = 0; tag[i].name != NULL; i++) {
3789 if (!strncmp(cp, tag[i].name, l)) {
3791 *flag |= tag[i].value;
3793 *flag &= ~tag[i].value;
3801 acpi_set_debugging(void *junk)
3803 char *layer, *level;
3810 layer = kern_getenv("debug.acpi.layer");
3811 level = kern_getenv("debug.acpi.level");
3812 if (layer == NULL && level == NULL)
3815 printf("ACPI set debug");
3816 if (layer != NULL) {
3817 if (strcmp("NONE", layer) != 0)
3818 printf(" layer '%s'", layer);
3819 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
3822 if (level != NULL) {
3823 if (strcmp("NONE", level) != 0)
3824 printf(" level '%s'", level);
3825 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
3831 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3835 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
3838 struct debugtag *tag;
3842 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
3844 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
3845 tag = &dbg_layer[0];
3846 dbg = &AcpiDbgLayer;
3848 tag = &dbg_level[0];
3849 dbg = &AcpiDbgLevel;
3852 /* Get old values if this is a get request. */
3853 ACPI_SERIAL_BEGIN(acpi);
3855 sbuf_cpy(&sb, "NONE");
3856 } else if (req->newptr == NULL) {
3857 for (; tag->name != NULL; tag++) {
3858 if ((*dbg & tag->value) == tag->value)
3859 sbuf_printf(&sb, "%s ", tag->name);
3864 strlcpy(temp, sbuf_data(&sb), sizeof(temp));
3867 error = sysctl_handle_string(oidp, temp, sizeof(temp), req);
3869 /* Check for error or no change */
3870 if (error == 0 && req->newptr != NULL) {
3872 kern_setenv((char *)oidp->oid_arg1, temp);
3873 acpi_set_debugging(NULL);
3875 ACPI_SERIAL_END(acpi);
3880 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
3881 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
3882 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
3883 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3884 #endif /* ACPI_DEBUG */
3887 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS)
3892 old = acpi_debug_objects;
3893 error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req);
3894 if (error != 0 || req->newptr == NULL)
3896 if (old == acpi_debug_objects || (old && acpi_debug_objects))
3899 ACPI_SERIAL_BEGIN(acpi);
3900 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
3901 ACPI_SERIAL_END(acpi);
3907 acpi_parse_interfaces(char *str, struct acpi_interface *iface)
3914 while (isspace(*p) || *p == ',')
3919 p = strdup(p, M_TEMP);
3920 for (i = 0; i < len; i++)
3925 if (isspace(p[i]) || p[i] == '\0')
3928 i += strlen(p + i) + 1;
3935 iface->data = malloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK);
3939 if (isspace(p[i]) || p[i] == '\0')
3942 iface->data[j] = p + i;
3943 i += strlen(p + i) + 1;
3951 acpi_free_interfaces(struct acpi_interface *iface)
3954 free(iface->data[0], M_TEMP);
3955 free(iface->data, M_TEMP);
3959 acpi_reset_interfaces(device_t dev)
3961 struct acpi_interface list;
3965 if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) {
3966 for (i = 0; i < list.num; i++) {
3967 status = AcpiInstallInterface(list.data[i]);
3968 if (ACPI_FAILURE(status))
3970 "failed to install _OSI(\"%s\"): %s\n",
3971 list.data[i], AcpiFormatException(status));
3972 else if (bootverbose)
3973 device_printf(dev, "installed _OSI(\"%s\")\n",
3976 acpi_free_interfaces(&list);
3978 if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) {
3979 for (i = 0; i < list.num; i++) {
3980 status = AcpiRemoveInterface(list.data[i]);
3981 if (ACPI_FAILURE(status))
3983 "failed to remove _OSI(\"%s\"): %s\n",
3984 list.data[i], AcpiFormatException(status));
3985 else if (bootverbose)
3986 device_printf(dev, "removed _OSI(\"%s\")\n",
3989 acpi_free_interfaces(&list);
3994 acpi_pm_func(u_long cmd, void *arg, ...)
3996 int state, acpi_state;
3998 struct acpi_softc *sc;
4003 case POWER_CMD_SUSPEND:
4004 sc = (struct acpi_softc *)arg;
4011 state = va_arg(ap, int);
4015 case POWER_SLEEP_STATE_STANDBY:
4016 acpi_state = sc->acpi_standby_sx;
4018 case POWER_SLEEP_STATE_SUSPEND:
4019 acpi_state = sc->acpi_suspend_sx;
4021 case POWER_SLEEP_STATE_HIBERNATE:
4022 acpi_state = ACPI_STATE_S4;
4029 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
4042 acpi_pm_register(void *arg)
4044 if (!cold || resource_disabled("acpi", 0))
4047 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
4050 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);