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 int acpi_modevent(struct module *mod, int event, void *junk);
105 static int acpi_probe(device_t dev);
106 static int acpi_attach(device_t dev);
107 static int acpi_suspend(device_t dev);
108 static int acpi_resume(device_t dev);
109 static int acpi_shutdown(device_t dev);
110 static device_t acpi_add_child(device_t bus, u_int order, const char *name,
112 static int acpi_print_child(device_t bus, device_t child);
113 static void acpi_probe_nomatch(device_t bus, device_t child);
114 static void acpi_driver_added(device_t dev, driver_t *driver);
115 static int acpi_read_ivar(device_t dev, device_t child, int index,
117 static int acpi_write_ivar(device_t dev, device_t child, int index,
119 static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
120 static void acpi_reserve_resources(device_t dev);
121 static int acpi_sysres_alloc(device_t dev);
122 static int acpi_set_resource(device_t dev, device_t child, int type,
123 int rid, u_long start, u_long count);
124 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
125 int type, int *rid, u_long start, u_long end,
126 u_long count, u_int flags);
127 static int acpi_adjust_resource(device_t bus, device_t child, int type,
128 struct resource *r, u_long start, u_long end);
129 static int acpi_release_resource(device_t bus, device_t child, int type,
130 int rid, struct resource *r);
131 static void acpi_delete_resource(device_t bus, device_t child, int type,
133 static uint32_t acpi_isa_get_logicalid(device_t dev);
134 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
135 static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
136 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
137 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
139 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
140 void *context, void **retval);
141 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
142 int max_depth, acpi_scan_cb_t user_fn, void *arg);
143 static int acpi_set_powerstate(device_t child, int state);
144 static int acpi_isa_pnp_probe(device_t bus, device_t child,
145 struct isa_pnp_id *ids);
146 static void acpi_probe_children(device_t bus);
147 static void acpi_probe_order(ACPI_HANDLE handle, int *order);
148 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
149 void *context, void **status);
150 static void acpi_sleep_enable(void *arg);
151 static ACPI_STATUS acpi_sleep_disable(struct acpi_softc *sc);
152 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
153 static void acpi_shutdown_final(void *arg, int howto);
154 static void acpi_enable_fixed_events(struct acpi_softc *sc);
155 static BOOLEAN acpi_has_hid(ACPI_HANDLE handle);
156 static void acpi_resync_clock(struct acpi_softc *sc);
157 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
158 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
159 static int acpi_wake_prep_walk(int sstate);
160 static int acpi_wake_sysctl_walk(device_t dev);
161 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
162 static void acpi_system_eventhandler_sleep(void *arg, int state);
163 static void acpi_system_eventhandler_wakeup(void *arg, int state);
164 static int acpi_sname2sstate(const char *sname);
165 static const char *acpi_sstate2sname(int sstate);
166 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
167 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
168 static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS);
169 static int acpi_pm_func(u_long cmd, void *arg, ...);
170 static int acpi_child_location_str_method(device_t acdev, device_t child,
171 char *buf, size_t buflen);
172 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
173 char *buf, size_t buflen);
174 #if defined(__i386__) || defined(__amd64__)
175 static void acpi_enable_pcie(void);
177 static void acpi_hint_device_unit(device_t acdev, device_t child,
178 const char *name, int *unitp);
179 static void acpi_reset_interfaces(device_t dev);
181 static device_method_t acpi_methods[] = {
182 /* Device interface */
183 DEVMETHOD(device_probe, acpi_probe),
184 DEVMETHOD(device_attach, acpi_attach),
185 DEVMETHOD(device_shutdown, acpi_shutdown),
186 DEVMETHOD(device_detach, bus_generic_detach),
187 DEVMETHOD(device_suspend, acpi_suspend),
188 DEVMETHOD(device_resume, acpi_resume),
191 DEVMETHOD(bus_add_child, acpi_add_child),
192 DEVMETHOD(bus_print_child, acpi_print_child),
193 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
194 DEVMETHOD(bus_driver_added, acpi_driver_added),
195 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
196 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
197 DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
198 DEVMETHOD(bus_set_resource, acpi_set_resource),
199 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
200 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
201 DEVMETHOD(bus_adjust_resource, acpi_adjust_resource),
202 DEVMETHOD(bus_release_resource, acpi_release_resource),
203 DEVMETHOD(bus_delete_resource, acpi_delete_resource),
204 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
205 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
206 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
207 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
208 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
209 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
210 DEVMETHOD(bus_hint_device_unit, acpi_hint_device_unit),
213 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
214 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
215 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
216 DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
219 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
224 static driver_t acpi_driver = {
227 sizeof(struct acpi_softc),
230 static devclass_t acpi_devclass;
231 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
232 MODULE_VERSION(acpi, 1);
234 ACPI_SERIAL_DECL(acpi, "ACPI root bus");
236 /* Local pools for managing system resources for ACPI child devices. */
237 static struct rman acpi_rman_io, acpi_rman_mem;
239 #define ACPI_MINIMUM_AWAKETIME 5
241 /* Holds the description of the acpi0 device. */
242 static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
244 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
245 static char acpi_ca_version[12];
246 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
247 acpi_ca_version, 0, "Version of Intel ACPI-CA");
250 * Allow overriding _OSI methods.
252 static char acpi_install_interface[256];
253 TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface,
254 sizeof(acpi_install_interface));
255 static char acpi_remove_interface[256];
256 TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface,
257 sizeof(acpi_remove_interface));
259 /* Allow users to dump Debug objects without ACPI debugger. */
260 static int acpi_debug_objects;
261 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects);
262 SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects,
263 CTLFLAG_RW | CTLTYPE_INT, NULL, 0, acpi_debug_objects_sysctl, "I",
264 "Enable Debug objects");
266 /* Allow the interpreter to ignore common mistakes in BIOS. */
267 static int acpi_interpreter_slack = 1;
268 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack);
269 SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RDTUN,
270 &acpi_interpreter_slack, 1, "Turn on interpreter slack mode.");
272 /* Ignore register widths set by FADT and use default widths instead. */
273 static int acpi_ignore_reg_width = 1;
274 TUNABLE_INT("debug.acpi.default_register_width", &acpi_ignore_reg_width);
275 SYSCTL_INT(_debug_acpi, OID_AUTO, default_register_width, CTLFLAG_RDTUN,
276 &acpi_ignore_reg_width, 1, "Ignore register widths set by FADT");
279 /* Reset system clock while resuming. XXX Remove once tested. */
280 static int acpi_reset_clock = 1;
281 TUNABLE_INT("debug.acpi.reset_clock", &acpi_reset_clock);
282 SYSCTL_INT(_debug_acpi, OID_AUTO, reset_clock, CTLFLAG_RW,
283 &acpi_reset_clock, 1, "Reset system clock while resuming.");
286 /* Allow users to override quirks. */
287 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
289 static int acpi_susp_bounce;
290 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
291 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
294 * ACPI can only be loaded as a module by the loader; activating it after
295 * system bootstrap time is not useful, and can be fatal to the system.
296 * It also cannot be unloaded, since the entire system bus hierarchy hangs
300 acpi_modevent(struct module *mod, int event, void *junk)
305 printf("The ACPI driver cannot be loaded after boot.\n");
310 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
320 * Perform early initialization.
325 static int started = 0;
329 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
331 /* Only run the startup code once. The MADT driver also calls this. */
333 return_VALUE (AE_OK);
337 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
338 * if more tables exist.
340 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
341 printf("ACPI: Table initialisation failed: %s\n",
342 AcpiFormatException(status));
343 return_VALUE (status);
346 /* Set up any quirks we have for this system. */
347 if (acpi_quirks == ACPI_Q_OK)
348 acpi_table_quirks(&acpi_quirks);
350 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
351 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
352 acpi_quirks &= ~ACPI_Q_BROKEN;
353 if (acpi_quirks & ACPI_Q_BROKEN) {
354 printf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
358 return_VALUE (status);
362 * Detect ACPI and perform early initialisation.
367 ACPI_TABLE_RSDP *rsdp;
368 ACPI_TABLE_HEADER *rsdt;
369 ACPI_PHYSICAL_ADDRESS paddr;
372 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
377 /* Check that we haven't been disabled with a hint. */
378 if (resource_disabled("acpi", 0))
381 /* Check for other PM systems. */
382 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
383 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
384 printf("ACPI identify failed, other PM system enabled.\n");
388 /* Initialize root tables. */
389 if (ACPI_FAILURE(acpi_Startup())) {
390 printf("ACPI: Try disabling either ACPI or apic support.\n");
394 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
395 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
397 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
398 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
400 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
401 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
403 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
405 sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN);
406 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
409 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
413 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
415 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
421 * Fetch some descriptive data from ACPI to put in our attach message.
424 acpi_probe(device_t dev)
427 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
429 device_set_desc(dev, acpi_desc);
431 return_VALUE (BUS_PROBE_NOWILDCARD);
435 acpi_attach(device_t dev)
437 struct acpi_softc *sc;
444 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
446 sc = device_get_softc(dev);
448 callout_init(&sc->susp_force_to, TRUE);
452 /* Initialize resource manager. */
453 acpi_rman_io.rm_type = RMAN_ARRAY;
454 acpi_rman_io.rm_start = 0;
455 acpi_rman_io.rm_end = 0xffff;
456 acpi_rman_io.rm_descr = "ACPI I/O ports";
457 if (rman_init(&acpi_rman_io) != 0)
458 panic("acpi rman_init IO ports failed");
459 acpi_rman_mem.rm_type = RMAN_ARRAY;
460 acpi_rman_mem.rm_start = 0;
461 acpi_rman_mem.rm_end = ~0ul;
462 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
463 if (rman_init(&acpi_rman_mem) != 0)
464 panic("acpi rman_init memory failed");
466 /* Initialise the ACPI mutex */
467 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
470 * Set the globals from our tunables. This is needed because ACPI-CA
471 * uses UINT8 for some values and we have no tunable_byte.
473 AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE;
474 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
475 AcpiGbl_UseDefaultRegisterWidths = acpi_ignore_reg_width ? TRUE : FALSE;
479 * Disable all debugging layers and levels.
485 /* Start up the ACPI CA subsystem. */
486 status = AcpiInitializeSubsystem();
487 if (ACPI_FAILURE(status)) {
488 device_printf(dev, "Could not initialize Subsystem: %s\n",
489 AcpiFormatException(status));
493 /* Override OS interfaces if the user requested. */
494 acpi_reset_interfaces(dev);
496 /* Load ACPI name space. */
497 status = AcpiLoadTables();
498 if (ACPI_FAILURE(status)) {
499 device_printf(dev, "Could not load Namespace: %s\n",
500 AcpiFormatException(status));
504 #if defined(__i386__) || defined(__amd64__)
505 /* Handle MCFG table if present. */
510 * Note that some systems (specifically, those with namespace evaluation
511 * issues that require the avoidance of parts of the namespace) must
512 * avoid running _INI and _STA on everything, as well as dodging the final
515 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
517 * XXX We should arrange for the object init pass after we have attached
518 * all our child devices, but on many systems it works here.
521 if (testenv("debug.acpi.avoid"))
522 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
524 /* Bring the hardware and basic handlers online. */
525 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
526 device_printf(dev, "Could not enable ACPI: %s\n",
527 AcpiFormatException(status));
532 * Call the ECDT probe function to provide EC functionality before
533 * the namespace has been evaluated.
535 * XXX This happens before the sysresource devices have been probed and
536 * attached so its resources come from nexus0. In practice, this isn't
537 * a problem but should be addressed eventually.
539 acpi_ec_ecdt_probe(dev);
541 /* Bring device objects and regions online. */
542 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
543 device_printf(dev, "Could not initialize ACPI objects: %s\n",
544 AcpiFormatException(status));
549 * Setup our sysctl tree.
551 * XXX: This doesn't check to make sure that none of these fail.
553 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
554 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
555 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
556 device_get_name(dev), CTLFLAG_RD, 0, "");
557 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
558 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
559 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
560 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
561 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
562 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
563 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
564 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
565 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
566 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
567 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
568 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
569 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
570 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
571 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
572 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
573 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
574 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
575 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
576 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
577 "sleep delay in seconds");
578 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
579 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
580 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
581 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
582 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
583 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
584 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
585 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
586 OID_AUTO, "handle_reboot", CTLFLAG_RW,
587 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
590 * Default to 1 second before sleeping to give some machines time to
593 sc->acpi_sleep_delay = 1;
595 sc->acpi_verbose = 1;
596 if ((env = getenv("hw.acpi.verbose")) != NULL) {
597 if (strcmp(env, "0") != 0)
598 sc->acpi_verbose = 1;
602 /* Only enable reboot by default if the FADT says it is available. */
603 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER)
604 sc->acpi_handle_reboot = 1;
606 /* Only enable S4BIOS by default if the FACS says it is available. */
607 if (AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
610 /* Probe all supported sleep states. */
611 acpi_sleep_states[ACPI_STATE_S0] = TRUE;
612 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
613 if (ACPI_SUCCESS(AcpiEvaluateObject(ACPI_ROOT_OBJECT,
614 __DECONST(char *, AcpiGbl_SleepStateNames[state]), NULL, NULL)) &&
615 ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
616 acpi_sleep_states[state] = TRUE;
619 * Dispatch the default sleep state to devices. The lid switch is set
620 * to UNKNOWN by default to avoid surprising users.
622 sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ?
623 ACPI_STATE_S5 : ACPI_STATE_UNKNOWN;
624 sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN;
625 sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ?
626 ACPI_STATE_S1 : ACPI_STATE_UNKNOWN;
627 sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ?
628 ACPI_STATE_S3 : ACPI_STATE_UNKNOWN;
630 /* Pick the first valid sleep state for the sleep button default. */
631 sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN;
632 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
633 if (acpi_sleep_states[state]) {
634 sc->acpi_sleep_button_sx = state;
638 acpi_enable_fixed_events(sc);
641 * Scan the namespace and attach/initialise children.
644 /* Register our shutdown handler. */
645 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
649 * Register our acpi event handlers.
650 * XXX should be configurable eg. via userland policy manager.
652 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
653 sc, ACPI_EVENT_PRI_LAST);
654 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
655 sc, ACPI_EVENT_PRI_LAST);
657 /* Flag our initial states. */
658 sc->acpi_enabled = TRUE;
659 sc->acpi_sstate = ACPI_STATE_S0;
660 sc->acpi_sleep_disabled = TRUE;
662 /* Create the control device */
663 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
665 sc->acpi_dev_t->si_drv1 = sc;
667 if ((error = acpi_machdep_init(dev)))
670 /* Register ACPI again to pass the correct argument of pm_func. */
671 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
673 if (!acpi_disabled("bus"))
674 acpi_probe_children(dev);
676 /* Update all GPEs and enable runtime GPEs. */
677 status = AcpiUpdateAllGpes();
678 if (ACPI_FAILURE(status))
679 device_printf(dev, "Could not update all GPEs: %s\n",
680 AcpiFormatException(status));
682 /* Allow sleep request after a while. */
683 callout_init_mtx(&acpi_sleep_timer, &acpi_mutex, 0);
684 callout_reset(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME,
685 acpi_sleep_enable, sc);
690 return_VALUE (error);
694 acpi_set_power_children(device_t dev, int state)
696 device_t child, parent;
698 int dstate, i, numdevs;
700 if (device_get_children(dev, &devlist, &numdevs) != 0)
704 * Retrieve and set D-state for the sleep state if _SxD is present.
705 * Skip children who aren't attached since they are handled separately.
707 parent = device_get_parent(dev);
708 for (i = 0; i < numdevs; i++) {
711 if (device_is_attached(child) &&
712 acpi_device_pwr_for_sleep(parent, dev, &dstate) == 0)
713 acpi_set_powerstate(child, dstate);
715 free(devlist, M_TEMP);
719 acpi_suspend(device_t dev)
725 error = bus_generic_suspend(dev);
727 acpi_set_power_children(dev, ACPI_STATE_D3);
733 acpi_resume(device_t dev)
738 acpi_set_power_children(dev, ACPI_STATE_D0);
740 return (bus_generic_resume(dev));
744 acpi_shutdown(device_t dev)
749 /* Allow children to shutdown first. */
750 bus_generic_shutdown(dev);
753 * Enable any GPEs that are able to power-on the system (i.e., RTC).
754 * Also, disable any that are not valid for this state (most).
756 acpi_wake_prep_walk(ACPI_STATE_S5);
762 * Handle a new device being added
765 acpi_add_child(device_t bus, u_int order, const char *name, int unit)
767 struct acpi_device *ad;
770 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
773 resource_list_init(&ad->ad_rl);
775 child = device_add_child_ordered(bus, order, name, unit);
777 device_set_ivars(child, ad);
784 acpi_print_child(device_t bus, device_t child)
786 struct acpi_device *adev = device_get_ivars(child);
787 struct resource_list *rl = &adev->ad_rl;
790 retval += bus_print_child_header(bus, child);
791 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
792 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
793 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
794 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
795 if (device_get_flags(child))
796 retval += printf(" flags %#x", device_get_flags(child));
797 retval += bus_print_child_footer(bus, child);
803 * If this device is an ACPI child but no one claimed it, attempt
804 * to power it off. We'll power it back up when a driver is added.
806 * XXX Disabled for now since many necessary devices (like fdc and
807 * ATA) don't claim the devices we created for them but still expect
808 * them to be powered up.
811 acpi_probe_nomatch(device_t bus, device_t child)
813 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
814 acpi_set_powerstate(child, ACPI_STATE_D3);
819 * If a new driver has a chance to probe a child, first power it up.
821 * XXX Disabled for now (see acpi_probe_nomatch for details).
824 acpi_driver_added(device_t dev, driver_t *driver)
826 device_t child, *devlist;
829 DEVICE_IDENTIFY(driver, dev);
830 if (device_get_children(dev, &devlist, &numdevs))
832 for (i = 0; i < numdevs; i++) {
834 if (device_get_state(child) == DS_NOTPRESENT) {
835 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
836 acpi_set_powerstate(child, ACPI_STATE_D0);
837 if (device_probe_and_attach(child) != 0)
838 acpi_set_powerstate(child, ACPI_STATE_D3);
840 device_probe_and_attach(child);
844 free(devlist, M_TEMP);
847 /* Location hint for devctl(8) */
849 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
852 struct acpi_device *dinfo = device_get_ivars(child);
856 if (dinfo->ad_handle) {
857 snprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
858 if (ACPI_SUCCESS(acpi_GetInteger(dinfo->ad_handle, "_PXM", &pxm))) {
859 snprintf(buf2, 32, " _PXM=%d", pxm);
860 strlcat(buf, buf2, buflen);
863 snprintf(buf, buflen, "unknown");
868 /* PnP information for devctl(8) */
870 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
873 struct acpi_device *dinfo = device_get_ivars(child);
874 ACPI_DEVICE_INFO *adinfo;
876 if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo))) {
877 snprintf(buf, buflen, "unknown");
881 snprintf(buf, buflen, "_HID=%s _UID=%lu",
882 (adinfo->Valid & ACPI_VALID_HID) ?
883 adinfo->HardwareId.String : "none",
884 (adinfo->Valid & ACPI_VALID_UID) ?
885 strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL);
892 * Handle per-device ivars
895 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
897 struct acpi_device *ad;
899 if ((ad = device_get_ivars(child)) == NULL) {
900 device_printf(child, "device has no ivars\n");
904 /* ACPI and ISA compatibility ivars */
906 case ACPI_IVAR_HANDLE:
907 *(ACPI_HANDLE *)result = ad->ad_handle;
909 case ACPI_IVAR_PRIVATE:
910 *(void **)result = ad->ad_private;
912 case ACPI_IVAR_FLAGS:
913 *(int *)result = ad->ad_flags;
915 case ISA_IVAR_VENDORID:
916 case ISA_IVAR_SERIAL:
917 case ISA_IVAR_COMPATID:
920 case ISA_IVAR_LOGICALID:
921 *(int *)result = acpi_isa_get_logicalid(child);
931 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
933 struct acpi_device *ad;
935 if ((ad = device_get_ivars(child)) == NULL) {
936 device_printf(child, "device has no ivars\n");
941 case ACPI_IVAR_HANDLE:
942 ad->ad_handle = (ACPI_HANDLE)value;
944 case ACPI_IVAR_PRIVATE:
945 ad->ad_private = (void *)value;
947 case ACPI_IVAR_FLAGS:
948 ad->ad_flags = (int)value;
951 panic("bad ivar write request (%d)", index);
959 * Handle child resource allocation/removal
961 static struct resource_list *
962 acpi_get_rlist(device_t dev, device_t child)
964 struct acpi_device *ad;
966 ad = device_get_ivars(child);
971 acpi_match_resource_hint(device_t dev, int type, long value)
973 struct acpi_device *ad = device_get_ivars(dev);
974 struct resource_list *rl = &ad->ad_rl;
975 struct resource_list_entry *rle;
977 STAILQ_FOREACH(rle, rl, link) {
978 if (rle->type != type)
980 if (rle->start <= value && rle->end >= value)
987 * Wire device unit numbers based on resource matches in hints.
990 acpi_hint_device_unit(device_t acdev, device_t child, const char *name,
995 int line, matches, unit;
998 * Iterate over all the hints for the devices with the specified
999 * name to see if one's resources are a subset of this device.
1003 if (resource_find_dev(&line, name, &unit, "at", NULL) != 0)
1006 /* Must have an "at" for acpi or isa. */
1007 resource_string_value(name, unit, "at", &s);
1008 if (!(strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 ||
1009 strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0))
1013 * Check for matching resources. We must have at least one match.
1014 * Since I/O and memory resources cannot be shared, if we get a
1015 * match on either of those, ignore any mismatches in IRQs or DRQs.
1017 * XXX: We may want to revisit this to be more lenient and wire
1018 * as long as it gets one match.
1021 if (resource_long_value(name, unit, "port", &value) == 0) {
1023 * Floppy drive controllers are notorious for having a
1024 * wide variety of resources not all of which include the
1025 * first port that is specified by the hint (typically
1026 * 0x3f0) (see the comment above fdc_isa_alloc_resources()
1027 * in fdc_isa.c). However, they do all seem to include
1028 * port + 2 (e.g. 0x3f2) so for a floppy device, look for
1029 * 'value + 2' in the port resources instead of the hint
1032 if (strcmp(name, "fdc") == 0)
1034 if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value))
1039 if (resource_long_value(name, unit, "maddr", &value) == 0) {
1040 if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value))
1047 if (resource_long_value(name, unit, "irq", &value) == 0) {
1048 if (acpi_match_resource_hint(child, SYS_RES_IRQ, value))
1053 if (resource_long_value(name, unit, "drq", &value) == 0) {
1054 if (acpi_match_resource_hint(child, SYS_RES_DRQ, value))
1062 /* We have a winner! */
1070 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
1071 * duplicates, we merge any in the sysresource attach routine.
1074 acpi_sysres_alloc(device_t dev)
1076 struct resource *res;
1077 struct resource_list *rl;
1078 struct resource_list_entry *rle;
1080 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1085 * Probe/attach any sysresource devices. This would be unnecessary if we
1086 * had multi-pass probe/attach.
1088 if (device_get_children(dev, &children, &child_count) != 0)
1090 for (i = 0; i < child_count; i++) {
1091 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1092 device_probe_and_attach(children[i]);
1094 free(children, M_TEMP);
1096 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
1097 STAILQ_FOREACH(rle, rl, link) {
1098 if (rle->res != NULL) {
1099 device_printf(dev, "duplicate resource for %lx\n", rle->start);
1103 /* Only memory and IO resources are valid here. */
1104 switch (rle->type) {
1105 case SYS_RES_IOPORT:
1108 case SYS_RES_MEMORY:
1109 rm = &acpi_rman_mem;
1115 /* Pre-allocate resource and add to our rman pool. */
1116 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1117 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
1119 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1122 device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1123 rle->start, rle->count, rle->type);
1128 static char *pcilink_ids[] = { "PNP0C0F", NULL };
1129 static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1132 * Reserve declared resources for devices found during attach once system
1133 * resources have been allocated.
1136 acpi_reserve_resources(device_t dev)
1138 struct resource_list_entry *rle;
1139 struct resource_list *rl;
1140 struct acpi_device *ad;
1141 struct acpi_softc *sc;
1145 sc = device_get_softc(dev);
1146 if (device_get_children(dev, &children, &child_count) != 0)
1148 for (i = 0; i < child_count; i++) {
1149 ad = device_get_ivars(children[i]);
1152 /* Don't reserve system resources. */
1153 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1156 STAILQ_FOREACH(rle, rl, link) {
1158 * Don't reserve IRQ resources. There are many sticky things
1159 * to get right otherwise (e.g. IRQs for psm, atkbd, and HPET
1160 * when using legacy routing).
1162 if (rle->type == SYS_RES_IRQ)
1166 * Don't reserve the resource if it is already allocated.
1167 * The acpi_ec(4) driver can allocate its resources early
1168 * if ECDT is present.
1170 if (rle->res != NULL)
1174 * Try to reserve the resource from our parent. If this
1175 * fails because the resource is a system resource, just
1176 * let it be. The resource range is already reserved so
1177 * that other devices will not use it. If the driver
1178 * needs to allocate the resource, then
1179 * acpi_alloc_resource() will sub-alloc from the system
1182 resource_list_reserve(rl, dev, children[i], rle->type, &rle->rid,
1183 rle->start, rle->end, rle->count, 0);
1186 free(children, M_TEMP);
1187 sc->acpi_resources_reserved = 1;
1191 acpi_set_resource(device_t dev, device_t child, int type, int rid,
1192 u_long start, u_long count)
1194 struct acpi_softc *sc = device_get_softc(dev);
1195 struct acpi_device *ad = device_get_ivars(child);
1196 struct resource_list *rl = &ad->ad_rl;
1197 ACPI_DEVICE_INFO *devinfo;
1200 /* Ignore IRQ resources for PCI link devices. */
1201 if (type == SYS_RES_IRQ && ACPI_ID_PROBE(dev, child, pcilink_ids) != NULL)
1205 * Ignore most resources for PCI root bridges. Some BIOSes
1206 * incorrectly enumerate the memory ranges they decode as plain
1207 * memory resources instead of as ResourceProducer ranges. Other
1208 * BIOSes incorrectly list system resource entries for I/O ranges
1209 * under the PCI bridge. Do allow the one known-correct case on
1210 * x86 of a PCI bridge claiming the I/O ports used for PCI config
1213 if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) {
1214 if (ACPI_SUCCESS(AcpiGetObjectInfo(ad->ad_handle, &devinfo))) {
1215 if ((devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0) {
1216 #if defined(__i386__) || defined(__amd64__)
1217 if (!(type == SYS_RES_IOPORT && start == CONF1_ADDR_PORT))
1220 AcpiOsFree(devinfo);
1224 AcpiOsFree(devinfo);
1228 /* If the resource is already allocated, fail. */
1229 if (resource_list_busy(rl, type, rid))
1232 /* If the resource is already reserved, release it. */
1233 if (resource_list_reserved(rl, type, rid))
1234 resource_list_unreserve(rl, dev, child, type, rid);
1236 /* Add the resource. */
1237 end = (start + count - 1);
1238 resource_list_add(rl, type, rid, start, end, count);
1240 /* Don't reserve resources until the system resources are allocated. */
1241 if (!sc->acpi_resources_reserved)
1244 /* Don't reserve system resources. */
1245 if (ACPI_ID_PROBE(dev, child, sysres_ids) != NULL)
1249 * Don't reserve IRQ resources. There are many sticky things to
1250 * get right otherwise (e.g. IRQs for psm, atkbd, and HPET when
1251 * using legacy routing).
1253 if (type == SYS_RES_IRQ)
1257 * Reserve the resource.
1259 * XXX: Ignores failure for now. Failure here is probably a
1260 * BIOS/firmware bug?
1262 resource_list_reserve(rl, dev, child, type, &rid, start, end, count, 0);
1266 static struct resource *
1267 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
1268 u_long start, u_long end, u_long count, u_int flags)
1271 struct acpi_device *ad;
1272 struct resource_list_entry *rle;
1273 struct resource_list *rl;
1274 struct resource *res;
1275 int isdefault = (start == 0UL && end == ~0UL);
1278 * First attempt at allocating the resource. For direct children,
1279 * use resource_list_alloc() to handle reserved resources. For
1280 * other devices, pass the request up to our parent.
1282 if (bus == device_get_parent(child)) {
1283 ad = device_get_ivars(child);
1287 * Simulate the behavior of the ISA bus for direct children
1288 * devices. That is, if a non-default range is specified for
1289 * a resource that doesn't exist, use bus_set_resource() to
1290 * add the resource before allocating it. Note that these
1291 * resources will not be reserved.
1293 if (!isdefault && resource_list_find(rl, type, *rid) == NULL)
1294 resource_list_add(rl, type, *rid, start, end, count);
1295 res = resource_list_alloc(rl, bus, child, type, rid, start, end, count,
1297 if (res != NULL && type == SYS_RES_IRQ) {
1299 * Since bus_config_intr() takes immediate effect, we cannot
1300 * configure the interrupt associated with a device when we
1301 * parse the resources but have to defer it until a driver
1302 * actually allocates the interrupt via bus_alloc_resource().
1304 * XXX: Should we handle the lookup failing?
1306 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
1307 acpi_config_intr(child, &ares);
1311 * If this is an allocation of the "default" range for a given
1312 * RID, fetch the exact bounds for this resource from the
1313 * resource list entry to try to allocate the range from the
1314 * system resource regions.
1316 if (res == NULL && isdefault) {
1317 rle = resource_list_find(rl, type, *rid);
1325 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1326 start, end, count, flags);
1329 * If the first attempt failed and this is an allocation of a
1330 * specific range, try to satisfy the request via a suballocation
1331 * from our system resource regions.
1333 if (res == NULL && start + count - 1 == end)
1334 res = acpi_alloc_sysres(child, type, rid, start, end, count, flags);
1339 * Attempt to allocate a specific resource range from the system
1340 * resource ranges. Note that we only handle memory and I/O port
1344 acpi_alloc_sysres(device_t child, int type, int *rid, u_long start, u_long end,
1345 u_long count, u_int flags)
1348 struct resource *res;
1351 case SYS_RES_IOPORT:
1354 case SYS_RES_MEMORY:
1355 rm = &acpi_rman_mem;
1361 KASSERT(start + count - 1 == end, ("wildcard resource range"));
1362 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1367 rman_set_rid(res, *rid);
1369 /* If requested, activate the resource using the parent's method. */
1370 if (flags & RF_ACTIVE)
1371 if (bus_activate_resource(child, type, *rid, res) != 0) {
1372 rman_release_resource(res);
1380 acpi_is_resource_managed(int type, struct resource *r)
1383 /* We only handle memory and IO resources through rman. */
1385 case SYS_RES_IOPORT:
1386 return (rman_is_region_manager(r, &acpi_rman_io));
1387 case SYS_RES_MEMORY:
1388 return (rman_is_region_manager(r, &acpi_rman_mem));
1394 acpi_adjust_resource(device_t bus, device_t child, int type, struct resource *r,
1395 u_long start, u_long end)
1398 if (acpi_is_resource_managed(type, r))
1399 return (rman_adjust_resource(r, start, end));
1400 return (bus_generic_adjust_resource(bus, child, type, r, start, end));
1404 acpi_release_resource(device_t bus, device_t child, int type, int rid,
1410 * If this resource belongs to one of our internal managers,
1411 * deactivate it and release it to the local pool.
1413 if (acpi_is_resource_managed(type, r)) {
1414 if (rman_get_flags(r) & RF_ACTIVE) {
1415 ret = bus_deactivate_resource(child, type, rid, r);
1419 return (rman_release_resource(r));
1422 return (bus_generic_rl_release_resource(bus, child, type, rid, r));
1426 acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1428 struct resource_list *rl;
1430 rl = acpi_get_rlist(bus, child);
1431 if (resource_list_busy(rl, type, rid)) {
1432 device_printf(bus, "delete_resource: Resource still owned by child"
1433 " (type=%d, rid=%d)\n", type, rid);
1436 resource_list_unreserve(rl, bus, child, type, rid);
1437 resource_list_delete(rl, type, rid);
1440 /* Allocate an IO port or memory resource, given its GAS. */
1442 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1443 struct resource **res, u_int flags)
1445 int error, res_type;
1448 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1451 /* We only support memory and IO spaces. */
1452 switch (gas->SpaceId) {
1453 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1454 res_type = SYS_RES_MEMORY;
1456 case ACPI_ADR_SPACE_SYSTEM_IO:
1457 res_type = SYS_RES_IOPORT;
1460 return (EOPNOTSUPP);
1464 * If the register width is less than 8, assume the BIOS author means
1465 * it is a bit field and just allocate a byte.
1467 if (gas->BitWidth && gas->BitWidth < 8)
1470 /* Validate the address after we're sure we support the space. */
1471 if (gas->Address == 0 || gas->BitWidth == 0)
1474 bus_set_resource(dev, res_type, *rid, gas->Address,
1476 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1481 bus_delete_resource(dev, res_type, *rid);
1486 /* Probe _HID and _CID for compatible ISA PNP ids. */
1488 acpi_isa_get_logicalid(device_t dev)
1490 ACPI_DEVICE_INFO *devinfo;
1494 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1496 /* Fetch and validate the HID. */
1497 if ((h = acpi_get_handle(dev)) == NULL ||
1498 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1501 pnpid = (devinfo->Valid & ACPI_VALID_HID) != 0 &&
1502 devinfo->HardwareId.Length >= ACPI_EISAID_STRING_SIZE ?
1503 PNP_EISAID(devinfo->HardwareId.String) : 0;
1504 AcpiOsFree(devinfo);
1506 return_VALUE (pnpid);
1510 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1512 ACPI_DEVICE_INFO *devinfo;
1513 ACPI_PNP_DEVICE_ID *ids;
1518 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1522 /* Fetch and validate the CID */
1523 if ((h = acpi_get_handle(dev)) == NULL ||
1524 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1527 if ((devinfo->Valid & ACPI_VALID_CID) == 0) {
1528 AcpiOsFree(devinfo);
1532 if (devinfo->CompatibleIdList.Count < count)
1533 count = devinfo->CompatibleIdList.Count;
1534 ids = devinfo->CompatibleIdList.Ids;
1535 for (i = 0, valid = 0; i < count; i++)
1536 if (ids[i].Length >= ACPI_EISAID_STRING_SIZE &&
1537 strncmp(ids[i].String, "PNP", 3) == 0) {
1538 *pnpid++ = PNP_EISAID(ids[i].String);
1541 AcpiOsFree(devinfo);
1543 return_VALUE (valid);
1547 acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1553 h = acpi_get_handle(dev);
1554 if (ids == NULL || h == NULL)
1556 t = acpi_get_type(dev);
1557 if (t != ACPI_TYPE_DEVICE && t != ACPI_TYPE_PROCESSOR)
1560 /* Try to match one of the array of IDs with a HID or CID. */
1561 for (i = 0; ids[i] != NULL; i++) {
1562 if (acpi_MatchHid(h, ids[i]))
1569 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1570 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1575 h = ACPI_ROOT_OBJECT;
1576 else if ((h = acpi_get_handle(dev)) == NULL)
1577 return (AE_BAD_PARAMETER);
1578 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1582 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1584 struct acpi_softc *sc;
1589 handle = acpi_get_handle(dev);
1592 * XXX If we find these devices, don't try to power them down.
1593 * The serial and IRDA ports on my T23 hang the system when
1594 * set to D3 and it appears that such legacy devices may
1595 * need special handling in their drivers.
1597 if (dstate == NULL || handle == NULL ||
1598 acpi_MatchHid(handle, "PNP0500") ||
1599 acpi_MatchHid(handle, "PNP0501") ||
1600 acpi_MatchHid(handle, "PNP0502") ||
1601 acpi_MatchHid(handle, "PNP0510") ||
1602 acpi_MatchHid(handle, "PNP0511"))
1606 * Override next state with the value from _SxD, if present.
1607 * Note illegal _S0D is evaluated because some systems expect this.
1609 sc = device_get_softc(bus);
1610 snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1611 status = acpi_GetInteger(handle, sxd, dstate);
1612 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
1613 device_printf(dev, "failed to get %s on %s: %s\n", sxd,
1614 acpi_name(handle), AcpiFormatException(status));
1621 /* Callback arg for our implementation of walking the namespace. */
1622 struct acpi_device_scan_ctx {
1623 acpi_scan_cb_t user_fn;
1629 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1631 struct acpi_device_scan_ctx *ctx;
1632 device_t dev, old_dev;
1634 ACPI_OBJECT_TYPE type;
1637 * Skip this device if we think we'll have trouble with it or it is
1638 * the parent where the scan began.
1640 ctx = (struct acpi_device_scan_ctx *)arg;
1641 if (acpi_avoid(h) || h == ctx->parent)
1644 /* If this is not a valid device type (e.g., a method), skip it. */
1645 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1647 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1648 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1652 * Call the user function with the current device. If it is unchanged
1653 * afterwards, return. Otherwise, we update the handle to the new dev.
1655 old_dev = acpi_get_device(h);
1657 status = ctx->user_fn(h, &dev, level, ctx->arg);
1658 if (ACPI_FAILURE(status) || old_dev == dev)
1661 /* Remove the old child and its connection to the handle. */
1662 if (old_dev != NULL) {
1663 device_delete_child(device_get_parent(old_dev), old_dev);
1664 AcpiDetachData(h, acpi_fake_objhandler);
1667 /* Recreate the handle association if the user created a device. */
1669 AcpiAttachData(h, acpi_fake_objhandler, dev);
1675 acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1676 acpi_scan_cb_t user_fn, void *arg)
1679 struct acpi_device_scan_ctx ctx;
1681 if (acpi_disabled("children"))
1685 h = ACPI_ROOT_OBJECT;
1686 else if ((h = acpi_get_handle(dev)) == NULL)
1687 return (AE_BAD_PARAMETER);
1688 ctx.user_fn = user_fn;
1691 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1692 acpi_device_scan_cb, NULL, &ctx, NULL));
1696 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1697 * device power states since it's close enough to ACPI.
1700 acpi_set_powerstate(device_t child, int state)
1705 h = acpi_get_handle(child);
1706 if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX)
1711 /* Ignore errors if the power methods aren't present. */
1712 status = acpi_pwr_switch_consumer(h, state);
1713 if (ACPI_SUCCESS(status)) {
1715 device_printf(child, "set ACPI power state D%d on %s\n",
1716 state, acpi_name(h));
1717 } else if (status != AE_NOT_FOUND)
1718 device_printf(child,
1719 "failed to set ACPI power state D%d on %s: %s\n", state,
1720 acpi_name(h), AcpiFormatException(status));
1726 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1728 int result, cid_count, i;
1729 uint32_t lid, cids[8];
1731 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1734 * ISA-style drivers attached to ACPI may persist and
1735 * probe manually if we return ENOENT. We never want
1736 * that to happen, so don't ever return it.
1740 /* Scan the supplied IDs for a match */
1741 lid = acpi_isa_get_logicalid(child);
1742 cid_count = acpi_isa_get_compatid(child, cids, 8);
1743 while (ids && ids->ip_id) {
1744 if (lid == ids->ip_id) {
1748 for (i = 0; i < cid_count; i++) {
1749 if (cids[i] == ids->ip_id) {
1758 if (result == 0 && ids->ip_desc)
1759 device_set_desc(child, ids->ip_desc);
1761 return_VALUE (result);
1764 #if defined(__i386__) || defined(__amd64__)
1766 * Look for a MCFG table. If it is present, use the settings for
1767 * domain (segment) 0 to setup PCI config space access via the memory
1771 acpi_enable_pcie(void)
1773 ACPI_TABLE_HEADER *hdr;
1774 ACPI_MCFG_ALLOCATION *alloc, *end;
1777 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1778 if (ACPI_FAILURE(status))
1781 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1782 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1783 while (alloc < end) {
1784 if (alloc->PciSegment == 0) {
1785 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1786 alloc->EndBusNumber);
1795 * Scan all of the ACPI namespace and attach child devices.
1797 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1798 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1799 * However, in violation of the spec, some systems place their PCI link
1800 * devices in \, so we have to walk the whole namespace. We check the
1801 * type of namespace nodes, so this should be ok.
1804 acpi_probe_children(device_t bus)
1807 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1810 * Scan the namespace and insert placeholders for all the devices that
1811 * we find. We also probe/attach any early devices.
1813 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1814 * we want to create nodes for all devices, not just those that are
1815 * currently present. (This assumes that we don't want to create/remove
1816 * devices as they appear, which might be smarter.)
1818 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1819 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
1822 /* Pre-allocate resources for our rman from any sysresource devices. */
1823 acpi_sysres_alloc(bus);
1825 /* Reserve resources already allocated to children. */
1826 acpi_reserve_resources(bus);
1828 /* Create any static children by calling device identify methods. */
1829 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1830 bus_generic_probe(bus);
1832 /* Probe/attach all children, created statically and from the namespace. */
1833 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "acpi bus_generic_attach\n"));
1834 bus_generic_attach(bus);
1836 /* Attach wake sysctls. */
1837 acpi_wake_sysctl_walk(bus);
1839 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1844 * Determine the probe order for a given device.
1847 acpi_probe_order(ACPI_HANDLE handle, int *order)
1849 ACPI_OBJECT_TYPE type;
1853 * 1. I/O port and memory system resource holders
1854 * 2. Clocks and timers (to handle early accesses)
1855 * 3. Embedded controllers (to handle early accesses)
1856 * 4. PCI Link Devices
1858 AcpiGetType(handle, &type);
1859 if (type == ACPI_TYPE_PROCESSOR)
1861 else if (acpi_MatchHid(handle, "PNP0C01") ||
1862 acpi_MatchHid(handle, "PNP0C02"))
1864 else if (acpi_MatchHid(handle, "PNP0100") ||
1865 acpi_MatchHid(handle, "PNP0103") ||
1866 acpi_MatchHid(handle, "PNP0B00"))
1868 else if (acpi_MatchHid(handle, "PNP0C09"))
1870 else if (acpi_MatchHid(handle, "PNP0C0F"))
1875 * Evaluate a child device and determine whether we might attach a device to
1879 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1881 struct acpi_prw_data prw;
1882 ACPI_OBJECT_TYPE type;
1884 device_t bus, child;
1888 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1890 if (acpi_disabled("children"))
1891 return_ACPI_STATUS (AE_OK);
1893 /* Skip this device if we think we'll have trouble with it. */
1894 if (acpi_avoid(handle))
1895 return_ACPI_STATUS (AE_OK);
1897 bus = (device_t)context;
1898 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1899 handle_str = acpi_name(handle);
1901 case ACPI_TYPE_DEVICE:
1903 * Since we scan from \, be sure to skip system scope objects.
1904 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1905 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
1906 * during the intialization and \_TZ_ is to support Notify() on it.
1908 if (strcmp(handle_str, "\\_SB_") == 0 ||
1909 strcmp(handle_str, "\\_TZ_") == 0)
1911 if (acpi_parse_prw(handle, &prw) == 0)
1912 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
1915 * Ignore devices that do not have a _HID or _CID. They should
1916 * be discovered by other buses (e.g. the PCI bus driver).
1918 if (!acpi_has_hid(handle))
1921 case ACPI_TYPE_PROCESSOR:
1922 case ACPI_TYPE_THERMAL:
1923 case ACPI_TYPE_POWER:
1925 * Create a placeholder device for this node. Sort the
1926 * placeholder so that the probe/attach passes will run
1927 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1928 * are reserved for special objects (i.e., system
1931 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1932 order = level * 10 + ACPI_DEV_BASE_ORDER;
1933 acpi_probe_order(handle, &order);
1934 child = BUS_ADD_CHILD(bus, order, NULL, -1);
1938 /* Associate the handle with the device_t and vice versa. */
1939 acpi_set_handle(child, handle);
1940 AcpiAttachData(handle, acpi_fake_objhandler, child);
1943 * Check that the device is present. If it's not present,
1944 * leave it disabled (so that we have a device_t attached to
1945 * the handle, but we don't probe it).
1947 * XXX PCI link devices sometimes report "present" but not
1948 * "functional" (i.e. if disabled). Go ahead and probe them
1949 * anyway since we may enable them later.
1951 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1952 /* Never disable PCI link devices. */
1953 if (acpi_MatchHid(handle, "PNP0C0F"))
1956 * Docking stations should remain enabled since the system
1957 * may be undocked at boot.
1959 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1962 device_disable(child);
1967 * Get the device's resource settings and attach them.
1968 * Note that if the device has _PRS but no _CRS, we need
1969 * to decide when it's appropriate to try to configure the
1970 * device. Ignore the return value here; it's OK for the
1971 * device not to have any resources.
1973 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
1978 return_ACPI_STATUS (AE_OK);
1982 * AcpiAttachData() requires an object handler but never uses it. This is a
1983 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1986 acpi_fake_objhandler(ACPI_HANDLE h, void *data)
1991 acpi_shutdown_final(void *arg, int howto)
1993 struct acpi_softc *sc = (struct acpi_softc *)arg;
1998 * XXX Shutdown code should only run on the BSP (cpuid 0).
1999 * Some chipsets do not power off the system correctly if called from
2002 if ((howto & RB_POWEROFF) != 0) {
2003 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
2004 if (ACPI_FAILURE(status)) {
2005 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2006 AcpiFormatException(status));
2009 device_printf(sc->acpi_dev, "Powering system off\n");
2010 intr = intr_disable();
2011 status = AcpiEnterSleepState(ACPI_STATE_S5);
2012 if (ACPI_FAILURE(status)) {
2014 device_printf(sc->acpi_dev, "power-off failed - %s\n",
2015 AcpiFormatException(status));
2019 device_printf(sc->acpi_dev, "power-off failed - timeout\n");
2021 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) {
2022 /* Reboot using the reset register. */
2023 status = AcpiReset();
2024 if (ACPI_SUCCESS(status)) {
2026 device_printf(sc->acpi_dev, "reset failed - timeout\n");
2027 } else if (status != AE_NOT_EXIST)
2028 device_printf(sc->acpi_dev, "reset failed - %s\n",
2029 AcpiFormatException(status));
2030 } else if (sc->acpi_do_disable && panicstr == NULL) {
2032 * Only disable ACPI if the user requested. On some systems, writing
2033 * the disable value to SMI_CMD hangs the system.
2035 device_printf(sc->acpi_dev, "Shutting down\n");
2041 acpi_enable_fixed_events(struct acpi_softc *sc)
2043 static int first_time = 1;
2045 /* Enable and clear fixed events and install handlers. */
2046 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
2047 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
2048 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
2049 acpi_event_power_button_sleep, sc);
2051 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
2053 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
2054 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
2055 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
2056 acpi_event_sleep_button_sleep, sc);
2058 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
2065 * Returns true if the device is actually present and should
2066 * be attached to. This requires the present, enabled, UI-visible
2067 * and diagnostics-passed bits to be set.
2070 acpi_DeviceIsPresent(device_t dev)
2072 ACPI_DEVICE_INFO *devinfo;
2076 if ((h = acpi_get_handle(dev)) == NULL ||
2077 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2080 /* If no _STA method, must be present */
2081 present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
2082 ACPI_DEVICE_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2084 AcpiOsFree(devinfo);
2089 * Returns true if the battery is actually present and inserted.
2092 acpi_BatteryIsPresent(device_t dev)
2094 ACPI_DEVICE_INFO *devinfo;
2098 if ((h = acpi_get_handle(dev)) == NULL ||
2099 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2102 /* If no _STA method, must be present */
2103 present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
2104 ACPI_BATTERY_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2106 AcpiOsFree(devinfo);
2111 * Returns true if a device has at least one valid device ID.
2114 acpi_has_hid(ACPI_HANDLE h)
2116 ACPI_DEVICE_INFO *devinfo;
2120 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2124 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
2126 else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
2127 if (devinfo->CompatibleIdList.Count > 0)
2130 AcpiOsFree(devinfo);
2135 * Match a HID string against a handle
2138 acpi_MatchHid(ACPI_HANDLE h, const char *hid)
2140 ACPI_DEVICE_INFO *devinfo;
2144 if (hid == NULL || h == NULL ||
2145 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2149 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
2150 strcmp(hid, devinfo->HardwareId.String) == 0)
2152 else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
2153 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
2154 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
2160 AcpiOsFree(devinfo);
2165 * Return the handle of a named object within our scope, ie. that of (parent)
2166 * or one if its parents.
2169 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
2174 /* Walk back up the tree to the root */
2176 status = AcpiGetHandle(parent, path, &r);
2177 if (ACPI_SUCCESS(status)) {
2181 /* XXX Return error here? */
2182 if (status != AE_NOT_FOUND)
2184 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
2185 return (AE_NOT_FOUND);
2191 * Allocate a buffer with a preset data size.
2194 acpi_AllocBuffer(int size)
2198 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
2201 buf->Pointer = (void *)(buf + 1);
2206 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
2209 ACPI_OBJECT_LIST args;
2211 arg1.Type = ACPI_TYPE_INTEGER;
2212 arg1.Integer.Value = number;
2214 args.Pointer = &arg1;
2216 return (AcpiEvaluateObject(handle, path, &args, NULL));
2220 * Evaluate a path that should return an integer.
2223 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
2230 handle = ACPI_ROOT_OBJECT;
2233 * Assume that what we've been pointed at is an Integer object, or
2234 * a method that will return an Integer.
2236 buf.Pointer = ¶m;
2237 buf.Length = sizeof(param);
2238 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2239 if (ACPI_SUCCESS(status)) {
2240 if (param.Type == ACPI_TYPE_INTEGER)
2241 *number = param.Integer.Value;
2247 * In some applications, a method that's expected to return an Integer
2248 * may instead return a Buffer (probably to simplify some internal
2249 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
2250 * convert it into an Integer as best we can.
2254 if (status == AE_BUFFER_OVERFLOW) {
2255 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
2256 status = AE_NO_MEMORY;
2258 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2259 if (ACPI_SUCCESS(status))
2260 status = acpi_ConvertBufferToInteger(&buf, number);
2261 AcpiOsFree(buf.Pointer);
2268 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2274 p = (ACPI_OBJECT *)bufp->Pointer;
2275 if (p->Type == ACPI_TYPE_INTEGER) {
2276 *number = p->Integer.Value;
2279 if (p->Type != ACPI_TYPE_BUFFER)
2281 if (p->Buffer.Length > sizeof(int))
2282 return (AE_BAD_DATA);
2285 val = p->Buffer.Pointer;
2286 for (i = 0; i < p->Buffer.Length; i++)
2287 *number += val[i] << (i * 8);
2292 * Iterate over the elements of an a package object, calling the supplied
2293 * function for each element.
2295 * XXX possible enhancement might be to abort traversal on error.
2298 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2299 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2304 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2305 return (AE_BAD_PARAMETER);
2307 /* Iterate over components */
2309 comp = pkg->Package.Elements;
2310 for (; i < pkg->Package.Count; i++, comp++)
2317 * Find the (index)th resource object in a set.
2320 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2325 rp = (ACPI_RESOURCE *)buf->Pointer;
2329 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2330 return (AE_BAD_PARAMETER);
2332 /* Check for terminator */
2333 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2334 return (AE_NOT_FOUND);
2335 rp = ACPI_NEXT_RESOURCE(rp);
2344 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2346 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2347 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2348 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2351 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2354 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2359 /* Initialise the buffer if necessary. */
2360 if (buf->Pointer == NULL) {
2361 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2362 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2363 return (AE_NO_MEMORY);
2364 rp = (ACPI_RESOURCE *)buf->Pointer;
2365 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2366 rp->Length = ACPI_RS_SIZE_MIN;
2372 * Scan the current buffer looking for the terminator.
2373 * This will either find the terminator or hit the end
2374 * of the buffer and return an error.
2376 rp = (ACPI_RESOURCE *)buf->Pointer;
2378 /* Range check, don't go outside the buffer */
2379 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2380 return (AE_BAD_PARAMETER);
2381 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2383 rp = ACPI_NEXT_RESOURCE(rp);
2387 * Check the size of the buffer and expand if required.
2390 * size of existing resources before terminator +
2391 * size of new resource and header +
2392 * size of terminator.
2394 * Note that this loop should really only run once, unless
2395 * for some reason we are stuffing a *really* huge resource.
2397 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2398 res->Length + ACPI_RS_SIZE_NO_DATA +
2399 ACPI_RS_SIZE_MIN) >= buf->Length) {
2400 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2401 return (AE_NO_MEMORY);
2402 bcopy(buf->Pointer, newp, buf->Length);
2403 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2404 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
2405 AcpiOsFree(buf->Pointer);
2406 buf->Pointer = newp;
2407 buf->Length += buf->Length;
2410 /* Insert the new resource. */
2411 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2413 /* And add the terminator. */
2414 rp = ACPI_NEXT_RESOURCE(rp);
2415 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2416 rp->Length = ACPI_RS_SIZE_MIN;
2422 * Set interrupt model.
2425 acpi_SetIntrModel(int model)
2428 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2432 * Walk subtables of a table and call a callback routine for each
2433 * subtable. The caller should provide the first subtable and a
2434 * pointer to the end of the table. This can be used to walk tables
2435 * such as MADT and SRAT that use subtable entries.
2438 acpi_walk_subtables(void *first, void *end, acpi_subtable_handler *handler,
2441 ACPI_SUBTABLE_HEADER *entry;
2443 for (entry = first; (void *)entry < end; ) {
2444 /* Avoid an infinite loop if we hit a bogus entry. */
2445 if (entry->Length < sizeof(ACPI_SUBTABLE_HEADER))
2448 handler(entry, arg);
2449 entry = ACPI_ADD_PTR(ACPI_SUBTABLE_HEADER, entry, entry->Length);
2454 * DEPRECATED. This interface has serious deficiencies and will be
2457 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2458 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2461 acpi_SetSleepState(struct acpi_softc *sc, int state)
2466 device_printf(sc->acpi_dev,
2467 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2470 return (acpi_EnterSleepState(sc, state));
2473 #if defined(__amd64__) || defined(__i386__)
2475 acpi_sleep_force_task(void *context)
2477 struct acpi_softc *sc = (struct acpi_softc *)context;
2479 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2480 device_printf(sc->acpi_dev, "force sleep state S%d failed\n",
2481 sc->acpi_next_sstate);
2485 acpi_sleep_force(void *arg)
2487 struct acpi_softc *sc = (struct acpi_softc *)arg;
2489 device_printf(sc->acpi_dev,
2490 "suspend request timed out, forcing sleep now\n");
2492 * XXX Suspending from callout causes freezes in DEVICE_SUSPEND().
2493 * Suspend from acpi_task thread instead.
2495 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
2496 acpi_sleep_force_task, sc)))
2497 device_printf(sc->acpi_dev, "AcpiOsExecute() for sleeping failed\n");
2502 * Request that the system enter the given suspend state. All /dev/apm
2503 * devices and devd(8) will be notified. Userland then has a chance to
2504 * save state and acknowledge the request. The system sleeps once all
2508 acpi_ReqSleepState(struct acpi_softc *sc, int state)
2510 #if defined(__amd64__) || defined(__i386__)
2511 struct apm_clone_data *clone;
2514 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
2516 if (!acpi_sleep_states[state])
2517 return (EOPNOTSUPP);
2519 /* If a suspend request is already in progress, just return. */
2520 if (sc->acpi_next_sstate != 0) {
2524 /* Wait until sleep is enabled. */
2525 while (sc->acpi_sleep_disabled) {
2531 sc->acpi_next_sstate = state;
2533 /* S5 (soft-off) should be entered directly with no waiting. */
2534 if (state == ACPI_STATE_S5) {
2536 status = acpi_EnterSleepState(sc, state);
2537 return (ACPI_SUCCESS(status) ? 0 : ENXIO);
2540 /* Record the pending state and notify all apm devices. */
2541 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2542 clone->notify_status = APM_EV_NONE;
2543 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
2544 selwakeuppri(&clone->sel_read, PZERO);
2545 KNOTE_LOCKED(&clone->sel_read.si_note, 0);
2549 /* If devd(8) is not running, immediately enter the sleep state. */
2550 if (!devctl_process_running()) {
2552 status = acpi_EnterSleepState(sc, state);
2553 return (ACPI_SUCCESS(status) ? 0 : ENXIO);
2557 * Set a timeout to fire if userland doesn't ack the suspend request
2558 * in time. This way we still eventually go to sleep if we were
2559 * overheating or running low on battery, even if userland is hung.
2560 * We cancel this timeout once all userland acks are in or the
2561 * suspend request is aborted.
2563 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2566 /* Now notify devd(8) also. */
2567 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2571 /* This platform does not support acpi suspend/resume. */
2572 return (EOPNOTSUPP);
2577 * Acknowledge (or reject) a pending sleep state. The caller has
2578 * prepared for suspend and is now ready for it to proceed. If the
2579 * error argument is non-zero, it indicates suspend should be cancelled
2580 * and gives an errno value describing why. Once all votes are in,
2581 * we suspend the system.
2584 acpi_AckSleepState(struct apm_clone_data *clone, int error)
2586 #if defined(__amd64__) || defined(__i386__)
2587 struct acpi_softc *sc;
2590 /* If no pending sleep state, return an error. */
2592 sc = clone->acpi_sc;
2593 if (sc->acpi_next_sstate == 0) {
2598 /* Caller wants to abort suspend process. */
2600 sc->acpi_next_sstate = 0;
2601 callout_stop(&sc->susp_force_to);
2602 device_printf(sc->acpi_dev,
2603 "listener on %s cancelled the pending suspend\n",
2604 devtoname(clone->cdev));
2610 * Mark this device as acking the suspend request. Then, walk through
2611 * all devices, seeing if they agree yet. We only count devices that
2612 * are writable since read-only devices couldn't ack the request.
2615 clone->notify_status = APM_EV_ACKED;
2616 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2617 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2618 clone->notify_status != APM_EV_ACKED) {
2624 /* If all devices have voted "yes", we will suspend now. */
2626 callout_stop(&sc->susp_force_to);
2630 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2635 /* This platform does not support acpi suspend/resume. */
2636 return (EOPNOTSUPP);
2641 acpi_sleep_enable(void *arg)
2643 struct acpi_softc *sc = (struct acpi_softc *)arg;
2645 ACPI_LOCK_ASSERT(acpi);
2647 /* Reschedule if the system is not fully up and running. */
2648 if (!AcpiGbl_SystemAwakeAndRunning) {
2649 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
2653 sc->acpi_sleep_disabled = FALSE;
2657 acpi_sleep_disable(struct acpi_softc *sc)
2661 /* Fail if the system is not fully up and running. */
2662 if (!AcpiGbl_SystemAwakeAndRunning)
2666 status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK;
2667 sc->acpi_sleep_disabled = TRUE;
2673 enum acpi_sleep_state {
2676 ACPI_SS_DEV_SUSPEND,
2682 * Enter the desired system sleep state.
2684 * Currently we support S1-S5 but S4 is only S4BIOS
2687 acpi_EnterSleepState(struct acpi_softc *sc, int state)
2691 ACPI_EVENT_STATUS power_button_status;
2692 enum acpi_sleep_state slp_state;
2695 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2697 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
2698 return_ACPI_STATUS (AE_BAD_PARAMETER);
2699 if (!acpi_sleep_states[state]) {
2700 device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n",
2702 return (AE_SUPPORT);
2705 /* Re-entry once we're suspending is not allowed. */
2706 status = acpi_sleep_disable(sc);
2707 if (ACPI_FAILURE(status)) {
2708 device_printf(sc->acpi_dev,
2709 "suspend request ignored (not ready yet)\n");
2713 if (state == ACPI_STATE_S5) {
2715 * Shut down cleanly and power off. This will call us back through the
2716 * shutdown handlers.
2718 shutdown_nice(RB_POWEROFF);
2719 return_ACPI_STATUS (AE_OK);
2722 EVENTHANDLER_INVOKE(power_suspend);
2725 thread_lock(curthread);
2726 sched_bind(curthread, 0);
2727 thread_unlock(curthread);
2731 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2732 * drivers need this.
2736 slp_state = ACPI_SS_NONE;
2738 sc->acpi_sstate = state;
2740 /* Enable any GPEs as appropriate and requested by the user. */
2741 acpi_wake_prep_walk(state);
2742 slp_state = ACPI_SS_GPE_SET;
2745 * Inform all devices that we are going to sleep. If at least one
2746 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2748 * XXX Note that a better two-pass approach with a 'veto' pass
2749 * followed by a "real thing" pass would be better, but the current
2750 * bus interface does not provide for this.
2752 if (DEVICE_SUSPEND(root_bus) != 0) {
2753 device_printf(sc->acpi_dev, "device_suspend failed\n");
2756 slp_state = ACPI_SS_DEV_SUSPEND;
2758 /* If testing device suspend only, back out of everything here. */
2759 if (acpi_susp_bounce)
2762 status = AcpiEnterSleepStatePrep(state);
2763 if (ACPI_FAILURE(status)) {
2764 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2765 AcpiFormatException(status));
2768 slp_state = ACPI_SS_SLP_PREP;
2770 if (sc->acpi_sleep_delay > 0)
2771 DELAY(sc->acpi_sleep_delay * 1000000);
2773 intr = intr_disable();
2774 if (state != ACPI_STATE_S1) {
2775 sleep_result = acpi_sleep_machdep(sc, state);
2776 acpi_wakeup_machdep(sc, state, sleep_result, 0);
2779 * XXX According to ACPI specification SCI_EN bit should be restored
2780 * by ACPI platform (BIOS, firmware) to its pre-sleep state.
2781 * Unfortunately some BIOSes fail to do that and that leads to
2782 * unexpected and serious consequences during wake up like a system
2783 * getting stuck in SMI handlers.
2784 * This hack is picked up from Linux, which claims that it follows
2787 if (sleep_result == 1 && state != ACPI_STATE_S4)
2788 AcpiWriteBitRegister(ACPI_BITREG_SCI_ENABLE, ACPI_ENABLE_EVENT);
2790 AcpiLeaveSleepStatePrep(state);
2792 if (sleep_result == 1 && state == ACPI_STATE_S3) {
2794 * Prevent mis-interpretation of the wakeup by power button
2795 * as a request for power off.
2796 * Ideally we should post an appropriate wakeup event,
2797 * perhaps using acpi_event_power_button_wake or alike.
2799 * Clearing of power button status after wakeup is mandated
2800 * by ACPI specification in section "Fixed Power Button".
2802 * XXX As of ACPICA 20121114 AcpiGetEventStatus provides
2803 * status as 0/1 corressponding to inactive/active despite
2804 * its type being ACPI_EVENT_STATUS. In other words,
2805 * we should not test for ACPI_EVENT_FLAG_SET for time being.
2807 if (ACPI_SUCCESS(AcpiGetEventStatus(ACPI_EVENT_POWER_BUTTON,
2808 &power_button_status)) && power_button_status != 0) {
2809 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
2810 device_printf(sc->acpi_dev,
2811 "cleared fixed power button status\n");
2817 /* call acpi_wakeup_machdep() again with interrupt enabled */
2818 acpi_wakeup_machdep(sc, state, sleep_result, 1);
2820 if (sleep_result == -1)
2823 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2824 if (state == ACPI_STATE_S4)
2827 status = AcpiEnterSleepState(state);
2828 AcpiLeaveSleepStatePrep(state);
2830 if (ACPI_FAILURE(status)) {
2831 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2832 AcpiFormatException(status));
2836 slp_state = ACPI_SS_SLEPT;
2839 * Back out state according to how far along we got in the suspend
2840 * process. This handles both the error and success cases.
2843 if (slp_state >= ACPI_SS_GPE_SET) {
2844 acpi_wake_prep_walk(state);
2845 sc->acpi_sstate = ACPI_STATE_S0;
2847 if (slp_state >= ACPI_SS_DEV_SUSPEND)
2848 DEVICE_RESUME(root_bus);
2849 if (slp_state >= ACPI_SS_SLP_PREP)
2850 AcpiLeaveSleepState(state);
2851 if (slp_state >= ACPI_SS_SLEPT) {
2852 acpi_resync_clock(sc);
2853 acpi_enable_fixed_events(sc);
2855 sc->acpi_next_sstate = 0;
2860 thread_lock(curthread);
2861 sched_unbind(curthread);
2862 thread_unlock(curthread);
2865 EVENTHANDLER_INVOKE(power_resume);
2867 /* Allow another sleep request after a while. */
2868 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
2870 /* Run /etc/rc.resume after we are back. */
2871 if (devctl_process_running())
2872 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2874 return_ACPI_STATUS (status);
2878 acpi_resync_clock(struct acpi_softc *sc)
2881 if (!acpi_reset_clock)
2885 * Warm up timecounter again and reset system clock.
2887 (void)timecounter->tc_get_timecount(timecounter);
2888 (void)timecounter->tc_get_timecount(timecounter);
2889 inittodr(time_second + sc->acpi_sleep_delay);
2893 /* Enable or disable the device's wake GPE. */
2895 acpi_wake_set_enable(device_t dev, int enable)
2897 struct acpi_prw_data prw;
2901 /* Make sure the device supports waking the system and get the GPE. */
2902 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2905 flags = acpi_get_flags(dev);
2907 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
2909 if (ACPI_FAILURE(status)) {
2910 device_printf(dev, "enable wake failed\n");
2913 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2915 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
2917 if (ACPI_FAILURE(status)) {
2918 device_printf(dev, "disable wake failed\n");
2921 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2928 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
2930 struct acpi_prw_data prw;
2933 /* Check that this is a wake-capable device and get its GPE. */
2934 if (acpi_parse_prw(handle, &prw) != 0)
2936 dev = acpi_get_device(handle);
2939 * The destination sleep state must be less than (i.e., higher power)
2940 * or equal to the value specified by _PRW. If this GPE cannot be
2941 * enabled for the next sleep state, then disable it. If it can and
2942 * the user requested it be enabled, turn on any required power resources
2945 if (sstate > prw.lowest_wake) {
2946 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
2948 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2949 acpi_name(handle), sstate);
2950 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2951 acpi_pwr_wake_enable(handle, 1);
2952 acpi_SetInteger(handle, "_PSW", 1);
2954 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2955 acpi_name(handle), sstate);
2962 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
2964 struct acpi_prw_data prw;
2968 * Check that this is a wake-capable device and get its GPE. Return
2969 * now if the user didn't enable this device for wake.
2971 if (acpi_parse_prw(handle, &prw) != 0)
2973 dev = acpi_get_device(handle);
2974 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2978 * If this GPE couldn't be enabled for the previous sleep state, it was
2979 * disabled before going to sleep so re-enable it. If it was enabled,
2980 * clear _PSW and turn off any power resources it used.
2982 if (sstate > prw.lowest_wake) {
2983 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
2985 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2987 acpi_SetInteger(handle, "_PSW", 0);
2988 acpi_pwr_wake_enable(handle, 0);
2990 device_printf(dev, "run_prep cleaned up for %s\n",
2998 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
3002 /* If suspending, run the sleep prep function, otherwise wake. */
3003 sstate = *(int *)context;
3004 if (AcpiGbl_SystemAwakeAndRunning)
3005 acpi_wake_sleep_prep(handle, sstate);
3007 acpi_wake_run_prep(handle, sstate);
3011 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
3013 acpi_wake_prep_walk(int sstate)
3015 ACPI_HANDLE sb_handle;
3017 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
3018 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
3019 acpi_wake_prep, NULL, &sstate, NULL);
3023 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
3025 acpi_wake_sysctl_walk(device_t dev)
3027 int error, i, numdevs;
3032 error = device_get_children(dev, &devlist, &numdevs);
3033 if (error != 0 || numdevs == 0) {
3035 free(devlist, M_TEMP);
3038 for (i = 0; i < numdevs; i++) {
3040 acpi_wake_sysctl_walk(child);
3041 if (!device_is_attached(child))
3043 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
3044 if (ACPI_SUCCESS(status)) {
3045 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
3046 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
3047 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
3048 acpi_wake_set_sysctl, "I", "Device set to wake the system");
3051 free(devlist, M_TEMP);
3056 /* Enable or disable wake from userland. */
3058 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
3063 dev = (device_t)arg1;
3064 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
3066 error = sysctl_handle_int(oidp, &enable, 0, req);
3067 if (error != 0 || req->newptr == NULL)
3069 if (enable != 0 && enable != 1)
3072 return (acpi_wake_set_enable(dev, enable));
3075 /* Parse a device's _PRW into a structure. */
3077 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
3080 ACPI_BUFFER prw_buffer;
3081 ACPI_OBJECT *res, *res2;
3082 int error, i, power_count;
3084 if (h == NULL || prw == NULL)
3088 * The _PRW object (7.2.9) is only required for devices that have the
3089 * ability to wake the system from a sleeping state.
3092 prw_buffer.Pointer = NULL;
3093 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
3094 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
3095 if (ACPI_FAILURE(status))
3097 res = (ACPI_OBJECT *)prw_buffer.Pointer;
3100 if (!ACPI_PKG_VALID(res, 2))
3104 * Element 1 of the _PRW object:
3105 * The lowest power system sleeping state that can be entered while still
3106 * providing wake functionality. The sleeping state being entered must
3107 * be less than (i.e., higher power) or equal to this value.
3109 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
3113 * Element 0 of the _PRW object:
3115 switch (res->Package.Elements[0].Type) {
3116 case ACPI_TYPE_INTEGER:
3118 * If the data type of this package element is numeric, then this
3119 * _PRW package element is the bit index in the GPEx_EN, in the
3120 * GPE blocks described in the FADT, of the enable bit that is
3121 * enabled for the wake event.
3123 prw->gpe_handle = NULL;
3124 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
3127 case ACPI_TYPE_PACKAGE:
3129 * If the data type of this package element is a package, then this
3130 * _PRW package element is itself a package containing two
3131 * elements. The first is an object reference to the GPE Block
3132 * device that contains the GPE that will be triggered by the wake
3133 * event. The second element is numeric and it contains the bit
3134 * index in the GPEx_EN, in the GPE Block referenced by the
3135 * first element in the package, of the enable bit that is enabled for
3138 * For example, if this field is a package then it is of the form:
3139 * Package() {\_SB.PCI0.ISA.GPE, 2}
3141 res2 = &res->Package.Elements[0];
3142 if (!ACPI_PKG_VALID(res2, 2))
3144 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
3145 if (prw->gpe_handle == NULL)
3147 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
3155 /* Elements 2 to N of the _PRW object are power resources. */
3156 power_count = res->Package.Count - 2;
3157 if (power_count > ACPI_PRW_MAX_POWERRES) {
3158 printf("ACPI device %s has too many power resources\n", acpi_name(h));
3161 prw->power_res_count = power_count;
3162 for (i = 0; i < power_count; i++)
3163 prw->power_res[i] = res->Package.Elements[i];
3166 if (prw_buffer.Pointer != NULL)
3167 AcpiOsFree(prw_buffer.Pointer);
3172 * ACPI Event Handlers
3175 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
3178 acpi_system_eventhandler_sleep(void *arg, int state)
3180 struct acpi_softc *sc = (struct acpi_softc *)arg;
3183 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
3185 /* Check if button action is disabled or unknown. */
3186 if (state == ACPI_STATE_UNKNOWN)
3189 /* Request that the system prepare to enter the given suspend state. */
3190 ret = acpi_ReqSleepState(sc, state);
3192 device_printf(sc->acpi_dev,
3193 "request to enter state S%d failed (err %d)\n", state, ret);
3199 acpi_system_eventhandler_wakeup(void *arg, int state)
3202 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
3204 /* Currently, nothing to do for wakeup. */
3210 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
3213 acpi_invoke_sleep_eventhandler(void *context)
3216 EVENTHANDLER_INVOKE(acpi_sleep_event, *(int *)context);
3220 acpi_invoke_wake_eventhandler(void *context)
3223 EVENTHANDLER_INVOKE(acpi_wakeup_event, *(int *)context);
3227 acpi_event_power_button_sleep(void *context)
3229 struct acpi_softc *sc = (struct acpi_softc *)context;
3231 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3233 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3234 acpi_invoke_sleep_eventhandler, &sc->acpi_power_button_sx)))
3235 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3236 return_VALUE (ACPI_INTERRUPT_HANDLED);
3240 acpi_event_power_button_wake(void *context)
3242 struct acpi_softc *sc = (struct acpi_softc *)context;
3244 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3246 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3247 acpi_invoke_wake_eventhandler, &sc->acpi_power_button_sx)))
3248 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3249 return_VALUE (ACPI_INTERRUPT_HANDLED);
3253 acpi_event_sleep_button_sleep(void *context)
3255 struct acpi_softc *sc = (struct acpi_softc *)context;
3257 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3259 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3260 acpi_invoke_sleep_eventhandler, &sc->acpi_sleep_button_sx)))
3261 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3262 return_VALUE (ACPI_INTERRUPT_HANDLED);
3266 acpi_event_sleep_button_wake(void *context)
3268 struct acpi_softc *sc = (struct acpi_softc *)context;
3270 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3272 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3273 acpi_invoke_wake_eventhandler, &sc->acpi_sleep_button_sx)))
3274 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3275 return_VALUE (ACPI_INTERRUPT_HANDLED);
3279 * XXX This static buffer is suboptimal. There is no locking so only
3280 * use this for single-threaded callers.
3283 acpi_name(ACPI_HANDLE handle)
3286 static char data[256];
3288 buf.Length = sizeof(data);
3291 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
3293 return ("(unknown)");
3297 * Debugging/bug-avoidance. Avoid trying to fetch info on various
3298 * parts of the namespace.
3301 acpi_avoid(ACPI_HANDLE handle)
3303 char *cp, *env, *np;
3306 np = acpi_name(handle);
3309 if ((env = getenv("debug.acpi.avoid")) == NULL)
3312 /* Scan the avoid list checking for a match */
3315 while (*cp != 0 && isspace(*cp))
3320 while (cp[len] != 0 && !isspace(cp[len]))
3322 if (!strncmp(cp, np, len)) {
3334 * Debugging/bug-avoidance. Disable ACPI subsystem components.
3337 acpi_disabled(char *subsys)
3342 if ((env = getenv("debug.acpi.disabled")) == NULL)
3344 if (strcmp(env, "all") == 0) {
3349 /* Scan the disable list, checking for a match. */
3352 while (*cp != '\0' && isspace(*cp))
3357 while (cp[len] != '\0' && !isspace(cp[len]))
3359 if (strncmp(cp, subsys, len) == 0) {
3371 * Control interface.
3373 * We multiplex ioctls for all participating ACPI devices here. Individual
3374 * drivers wanting to be accessible via /dev/acpi should use the
3375 * register/deregister interface to make their handlers visible.
3377 struct acpi_ioctl_hook
3379 TAILQ_ENTRY(acpi_ioctl_hook) link;
3385 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
3386 static int acpi_ioctl_hooks_initted;
3389 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
3391 struct acpi_ioctl_hook *hp;
3393 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
3400 if (acpi_ioctl_hooks_initted == 0) {
3401 TAILQ_INIT(&acpi_ioctl_hooks);
3402 acpi_ioctl_hooks_initted = 1;
3404 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
3411 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
3413 struct acpi_ioctl_hook *hp;
3416 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
3417 if (hp->cmd == cmd && hp->fn == fn)
3421 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
3422 free(hp, M_ACPIDEV);
3428 acpiopen(struct cdev *dev, int flag, int fmt, struct thread *td)
3434 acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td)
3440 acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
3442 struct acpi_softc *sc;
3443 struct acpi_ioctl_hook *hp;
3451 * Scan the list of registered ioctls, looking for handlers.
3454 if (acpi_ioctl_hooks_initted)
3455 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3461 return (hp->fn(cmd, addr, hp->arg));
3464 * Core ioctls are not permitted for non-writable user.
3465 * Currently, other ioctls just fetch information.
3466 * Not changing system behavior.
3468 if ((flag & FWRITE) == 0)
3471 /* Core system ioctls. */
3473 case ACPIIO_REQSLPSTATE:
3474 state = *(int *)addr;
3475 if (state != ACPI_STATE_S5)
3476 return (acpi_ReqSleepState(sc, state));
3477 device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n");
3480 case ACPIIO_ACKSLPSTATE:
3481 error = *(int *)addr;
3482 error = acpi_AckSleepState(sc->acpi_clone, error);
3484 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3485 state = *(int *)addr;
3486 if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX)
3488 if (!acpi_sleep_states[state])
3489 return (EOPNOTSUPP);
3490 if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
3502 acpi_sname2sstate(const char *sname)
3506 if (toupper(sname[0]) == 'S') {
3507 sstate = sname[1] - '0';
3508 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 &&
3511 } else if (strcasecmp(sname, "NONE") == 0)
3512 return (ACPI_STATE_UNKNOWN);
3517 acpi_sstate2sname(int sstate)
3519 static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" };
3521 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5)
3522 return (snames[sstate]);
3523 else if (sstate == ACPI_STATE_UNKNOWN)
3529 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3535 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3536 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
3537 if (acpi_sleep_states[state])
3538 sbuf_printf(&sb, "%s ", acpi_sstate2sname(state));
3541 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3547 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3549 char sleep_state[10];
3550 int error, new_state, old_state;
3552 old_state = *(int *)oidp->oid_arg1;
3553 strlcpy(sleep_state, acpi_sstate2sname(old_state), sizeof(sleep_state));
3554 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3555 if (error == 0 && req->newptr != NULL) {
3556 new_state = acpi_sname2sstate(sleep_state);
3557 if (new_state < ACPI_STATE_S1)
3559 if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state])
3560 return (EOPNOTSUPP);
3561 if (new_state != old_state)
3562 *(int *)oidp->oid_arg1 = new_state;
3567 /* Inform devctl(4) when we receive a Notify. */
3569 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3571 char notify_buf[16];
3572 ACPI_BUFFER handle_buf;
3575 if (subsystem == NULL)
3578 handle_buf.Pointer = NULL;
3579 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3580 status = AcpiNsHandleToPathname(h, &handle_buf);
3581 if (ACPI_FAILURE(status))
3583 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
3584 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
3585 AcpiOsFree(handle_buf.Pointer);
3590 * Support for parsing debug options from the kernel environment.
3592 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3593 * by specifying the names of the bits in the debug.acpi.layer and
3594 * debug.acpi.level environment variables. Bits may be unset by
3595 * prefixing the bit name with !.
3603 static struct debugtag dbg_layer[] = {
3604 {"ACPI_UTILITIES", ACPI_UTILITIES},
3605 {"ACPI_HARDWARE", ACPI_HARDWARE},
3606 {"ACPI_EVENTS", ACPI_EVENTS},
3607 {"ACPI_TABLES", ACPI_TABLES},
3608 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3609 {"ACPI_PARSER", ACPI_PARSER},
3610 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3611 {"ACPI_EXECUTER", ACPI_EXECUTER},
3612 {"ACPI_RESOURCES", ACPI_RESOURCES},
3613 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3614 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3615 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3616 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3618 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3619 {"ACPI_BATTERY", ACPI_BATTERY},
3620 {"ACPI_BUS", ACPI_BUS},
3621 {"ACPI_BUTTON", ACPI_BUTTON},
3622 {"ACPI_EC", ACPI_EC},
3623 {"ACPI_FAN", ACPI_FAN},
3624 {"ACPI_POWERRES", ACPI_POWERRES},
3625 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3626 {"ACPI_THERMAL", ACPI_THERMAL},
3627 {"ACPI_TIMER", ACPI_TIMER},
3628 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3632 static struct debugtag dbg_level[] = {
3633 {"ACPI_LV_INIT", ACPI_LV_INIT},
3634 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3635 {"ACPI_LV_INFO", ACPI_LV_INFO},
3636 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR},
3637 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3639 /* Trace verbosity level 1 [Standard Trace Level] */
3640 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3641 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3642 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3643 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3644 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3645 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3646 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3647 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3648 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3649 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3650 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3651 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3652 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3653 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3654 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3656 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3657 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3658 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3659 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3660 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3661 {"ACPI_LV_ALL", ACPI_LV_ALL},
3663 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3664 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3665 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3666 {"ACPI_LV_IO", ACPI_LV_IO},
3667 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3668 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3670 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3671 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
3672 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
3673 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
3674 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
3675 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
3680 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
3692 while (*ep && !isspace(*ep))
3703 for (i = 0; tag[i].name != NULL; i++) {
3704 if (!strncmp(cp, tag[i].name, l)) {
3706 *flag |= tag[i].value;
3708 *flag &= ~tag[i].value;
3716 acpi_set_debugging(void *junk)
3718 char *layer, *level;
3725 layer = getenv("debug.acpi.layer");
3726 level = getenv("debug.acpi.level");
3727 if (layer == NULL && level == NULL)
3730 printf("ACPI set debug");
3731 if (layer != NULL) {
3732 if (strcmp("NONE", layer) != 0)
3733 printf(" layer '%s'", layer);
3734 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
3737 if (level != NULL) {
3738 if (strcmp("NONE", level) != 0)
3739 printf(" level '%s'", level);
3740 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
3746 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3750 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
3753 struct debugtag *tag;
3756 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
3758 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
3759 tag = &dbg_layer[0];
3760 dbg = &AcpiDbgLayer;
3762 tag = &dbg_level[0];
3763 dbg = &AcpiDbgLevel;
3766 /* Get old values if this is a get request. */
3767 ACPI_SERIAL_BEGIN(acpi);
3769 sbuf_cpy(&sb, "NONE");
3770 } else if (req->newptr == NULL) {
3771 for (; tag->name != NULL; tag++) {
3772 if ((*dbg & tag->value) == tag->value)
3773 sbuf_printf(&sb, "%s ", tag->name);
3779 /* Copy out the old values to the user. */
3780 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
3783 /* If the user is setting a string, parse it. */
3784 if (error == 0 && req->newptr != NULL) {
3786 setenv((char *)oidp->oid_arg1, (char *)req->newptr);
3787 acpi_set_debugging(NULL);
3789 ACPI_SERIAL_END(acpi);
3794 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
3795 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
3796 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
3797 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3798 #endif /* ACPI_DEBUG */
3801 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS)
3806 old = acpi_debug_objects;
3807 error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req);
3808 if (error != 0 || req->newptr == NULL)
3810 if (old == acpi_debug_objects || (old && acpi_debug_objects))
3813 ACPI_SERIAL_BEGIN(acpi);
3814 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
3815 ACPI_SERIAL_END(acpi);
3821 acpi_parse_interfaces(char *str, struct acpi_interface *iface)
3828 while (isspace(*p) || *p == ',')
3833 p = strdup(p, M_TEMP);
3834 for (i = 0; i < len; i++)
3839 if (isspace(p[i]) || p[i] == '\0')
3842 i += strlen(p + i) + 1;
3849 iface->data = malloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK);
3853 if (isspace(p[i]) || p[i] == '\0')
3856 iface->data[j] = p + i;
3857 i += strlen(p + i) + 1;
3865 acpi_free_interfaces(struct acpi_interface *iface)
3868 free(iface->data[0], M_TEMP);
3869 free(iface->data, M_TEMP);
3873 acpi_reset_interfaces(device_t dev)
3875 struct acpi_interface list;
3879 if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) {
3880 for (i = 0; i < list.num; i++) {
3881 status = AcpiInstallInterface(list.data[i]);
3882 if (ACPI_FAILURE(status))
3884 "failed to install _OSI(\"%s\"): %s\n",
3885 list.data[i], AcpiFormatException(status));
3886 else if (bootverbose)
3887 device_printf(dev, "installed _OSI(\"%s\")\n",
3890 acpi_free_interfaces(&list);
3892 if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) {
3893 for (i = 0; i < list.num; i++) {
3894 status = AcpiRemoveInterface(list.data[i]);
3895 if (ACPI_FAILURE(status))
3897 "failed to remove _OSI(\"%s\"): %s\n",
3898 list.data[i], AcpiFormatException(status));
3899 else if (bootverbose)
3900 device_printf(dev, "removed _OSI(\"%s\")\n",
3903 acpi_free_interfaces(&list);
3908 acpi_pm_func(u_long cmd, void *arg, ...)
3910 int state, acpi_state;
3912 struct acpi_softc *sc;
3917 case POWER_CMD_SUSPEND:
3918 sc = (struct acpi_softc *)arg;
3925 state = va_arg(ap, int);
3929 case POWER_SLEEP_STATE_STANDBY:
3930 acpi_state = sc->acpi_standby_sx;
3932 case POWER_SLEEP_STATE_SUSPEND:
3933 acpi_state = sc->acpi_suspend_sx;
3935 case POWER_SLEEP_STATE_HIBERNATE:
3936 acpi_state = ACPI_STATE_S4;
3943 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
3956 acpi_pm_register(void *arg)
3958 if (!cold || resource_disabled("acpi", 0))
3961 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3964 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);