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("$FreeBSD$");
35 #include <sys/param.h>
36 #include <sys/kernel.h>
38 #include <sys/fcntl.h>
39 #include <sys/malloc.h>
40 #include <sys/module.h>
43 #include <sys/ioccom.h>
44 #include <sys/reboot.h>
45 #include <sys/sysctl.h>
46 #include <sys/ctype.h>
47 #include <sys/linker.h>
48 #include <sys/power.h>
50 #include <sys/sched.h>
52 #include <sys/timetc.h>
54 #if defined(__i386__) || defined(__amd64__)
55 #include <machine/clock.h>
56 #include <machine/pci_cfgreg.h>
58 #include <machine/resource.h>
59 #include <machine/bus.h>
61 #include <isa/isavar.h>
62 #include <isa/pnpvar.h>
64 #include <contrib/dev/acpica/include/acpi.h>
65 #include <contrib/dev/acpica/include/accommon.h>
66 #include <contrib/dev/acpica/include/acnamesp.h>
68 #include <dev/acpica/acpivar.h>
69 #include <dev/acpica/acpiio.h>
71 #include <dev/pci/pcivar.h>
73 #include <vm/vm_param.h>
75 static MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
77 /* Hooks for the ACPI CA debugging infrastructure */
78 #define _COMPONENT ACPI_BUS
79 ACPI_MODULE_NAME("ACPI")
81 static d_open_t acpiopen;
82 static d_close_t acpiclose;
83 static d_ioctl_t acpiioctl;
85 static struct cdevsw acpi_cdevsw = {
86 .d_version = D_VERSION,
93 struct acpi_interface {
98 static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
99 static char *pcilink_ids[] = { "PNP0C0F", NULL };
101 /* Global mutex for locking access to the ACPI subsystem. */
102 struct mtx acpi_mutex;
103 struct callout acpi_sleep_timer;
105 /* Bitmap of device quirks. */
108 /* Supported sleep states. */
109 static BOOLEAN acpi_sleep_states[ACPI_S_STATE_COUNT];
111 static void acpi_lookup(void *arg, const char *name, device_t *dev);
112 static int acpi_modevent(struct module *mod, int event, void *junk);
113 static int acpi_probe(device_t dev);
114 static int acpi_attach(device_t dev);
115 static int acpi_suspend(device_t dev);
116 static int acpi_resume(device_t dev);
117 static int acpi_shutdown(device_t dev);
118 static device_t acpi_add_child(device_t bus, u_int order, const char *name,
120 static int acpi_print_child(device_t bus, device_t child);
121 static void acpi_probe_nomatch(device_t bus, device_t child);
122 static void acpi_driver_added(device_t dev, driver_t *driver);
123 static int acpi_read_ivar(device_t dev, device_t child, int index,
125 static int acpi_write_ivar(device_t dev, device_t child, int index,
127 static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
128 static void acpi_reserve_resources(device_t dev);
129 static int acpi_sysres_alloc(device_t dev);
130 static int acpi_set_resource(device_t dev, device_t child, int type,
131 int rid, rman_res_t start, rman_res_t count);
132 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
133 int type, int *rid, rman_res_t start, rman_res_t end,
134 rman_res_t count, u_int flags);
135 static int acpi_adjust_resource(device_t bus, device_t child, int type,
136 struct resource *r, rman_res_t start, rman_res_t end);
137 static int acpi_release_resource(device_t bus, device_t child, int type,
138 int rid, struct resource *r);
139 static void acpi_delete_resource(device_t bus, device_t child, int type,
141 static uint32_t acpi_isa_get_logicalid(device_t dev);
142 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
143 static int acpi_device_id_probe(device_t bus, device_t dev, char **ids, char **match);
144 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
145 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
147 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
148 void *context, void **retval);
149 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
150 int max_depth, acpi_scan_cb_t user_fn, void *arg);
151 static int acpi_set_powerstate(device_t child, int state);
152 static int acpi_isa_pnp_probe(device_t bus, device_t child,
153 struct isa_pnp_id *ids);
154 static void acpi_probe_children(device_t bus);
155 static void acpi_probe_order(ACPI_HANDLE handle, int *order);
156 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
157 void *context, void **status);
158 static void acpi_sleep_enable(void *arg);
159 static ACPI_STATUS acpi_sleep_disable(struct acpi_softc *sc);
160 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
161 static void acpi_shutdown_final(void *arg, int howto);
162 static void acpi_enable_fixed_events(struct acpi_softc *sc);
163 static BOOLEAN acpi_has_hid(ACPI_HANDLE handle);
164 static void acpi_resync_clock(struct acpi_softc *sc);
165 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
166 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
167 static int acpi_wake_prep_walk(int sstate);
168 static int acpi_wake_sysctl_walk(device_t dev);
169 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
170 static void acpi_system_eventhandler_sleep(void *arg, int state);
171 static void acpi_system_eventhandler_wakeup(void *arg, int state);
172 static int acpi_sname2sstate(const char *sname);
173 static const char *acpi_sstate2sname(int sstate);
174 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
175 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
176 static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS);
177 static int acpi_pm_func(u_long cmd, void *arg, ...);
178 static int acpi_child_location_str_method(device_t acdev, device_t child,
179 char *buf, size_t buflen);
180 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
181 char *buf, size_t buflen);
182 static void acpi_enable_pcie(void);
183 static void acpi_hint_device_unit(device_t acdev, device_t child,
184 const char *name, int *unitp);
185 static void acpi_reset_interfaces(device_t dev);
187 static device_method_t acpi_methods[] = {
188 /* Device interface */
189 DEVMETHOD(device_probe, acpi_probe),
190 DEVMETHOD(device_attach, acpi_attach),
191 DEVMETHOD(device_shutdown, acpi_shutdown),
192 DEVMETHOD(device_detach, bus_generic_detach),
193 DEVMETHOD(device_suspend, acpi_suspend),
194 DEVMETHOD(device_resume, acpi_resume),
197 DEVMETHOD(bus_add_child, acpi_add_child),
198 DEVMETHOD(bus_print_child, acpi_print_child),
199 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
200 DEVMETHOD(bus_driver_added, acpi_driver_added),
201 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
202 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
203 DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
204 DEVMETHOD(bus_set_resource, acpi_set_resource),
205 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
206 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
207 DEVMETHOD(bus_adjust_resource, acpi_adjust_resource),
208 DEVMETHOD(bus_release_resource, acpi_release_resource),
209 DEVMETHOD(bus_delete_resource, acpi_delete_resource),
210 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
211 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
212 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
213 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
214 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
215 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
216 DEVMETHOD(bus_hint_device_unit, acpi_hint_device_unit),
217 DEVMETHOD(bus_get_cpus, acpi_get_cpus),
218 DEVMETHOD(bus_get_domain, acpi_get_domain),
221 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
222 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
223 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
224 DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
227 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
232 static driver_t acpi_driver = {
235 sizeof(struct acpi_softc),
238 static devclass_t acpi_devclass;
239 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
240 MODULE_VERSION(acpi, 1);
242 ACPI_SERIAL_DECL(acpi, "ACPI root bus");
244 /* Local pools for managing system resources for ACPI child devices. */
245 static struct rman acpi_rman_io, acpi_rman_mem;
247 #define ACPI_MINIMUM_AWAKETIME 5
249 /* Holds the description of the acpi0 device. */
250 static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
252 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
253 static char acpi_ca_version[12];
254 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
255 acpi_ca_version, 0, "Version of Intel ACPI-CA");
258 * Allow overriding _OSI methods.
260 static char acpi_install_interface[256];
261 TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface,
262 sizeof(acpi_install_interface));
263 static char acpi_remove_interface[256];
264 TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface,
265 sizeof(acpi_remove_interface));
267 /* Allow users to dump Debug objects without ACPI debugger. */
268 static int acpi_debug_objects;
269 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects);
270 SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects,
271 CTLFLAG_RW | CTLTYPE_INT, NULL, 0, acpi_debug_objects_sysctl, "I",
272 "Enable Debug objects");
274 /* Allow the interpreter to ignore common mistakes in BIOS. */
275 static int acpi_interpreter_slack = 1;
276 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack);
277 SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RDTUN,
278 &acpi_interpreter_slack, 1, "Turn on interpreter slack mode.");
280 /* Ignore register widths set by FADT and use default widths instead. */
281 static int acpi_ignore_reg_width = 1;
282 TUNABLE_INT("debug.acpi.default_register_width", &acpi_ignore_reg_width);
283 SYSCTL_INT(_debug_acpi, OID_AUTO, default_register_width, CTLFLAG_RDTUN,
284 &acpi_ignore_reg_width, 1, "Ignore register widths set by FADT");
286 /* Allow users to override quirks. */
287 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
289 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 * Initialize the ACPICA subsystem.
339 if (ACPI_FAILURE(status = AcpiInitializeSubsystem())) {
340 printf("ACPI: Could not initialize Subsystem: %s\n",
341 AcpiFormatException(status));
342 return_VALUE (status);
346 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
347 * if more tables exist.
349 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
350 printf("ACPI: Table initialisation failed: %s\n",
351 AcpiFormatException(status));
352 return_VALUE (status);
355 /* Set up any quirks we have for this system. */
356 if (acpi_quirks == ACPI_Q_OK)
357 acpi_table_quirks(&acpi_quirks);
359 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
360 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
361 acpi_quirks &= ~ACPI_Q_BROKEN;
362 if (acpi_quirks & ACPI_Q_BROKEN) {
363 printf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
367 return_VALUE (status);
371 * Detect ACPI and perform early initialisation.
376 ACPI_TABLE_RSDP *rsdp;
377 ACPI_TABLE_HEADER *rsdt;
378 ACPI_PHYSICAL_ADDRESS paddr;
381 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
386 /* Check that we haven't been disabled with a hint. */
387 if (resource_disabled("acpi", 0))
390 /* Check for other PM systems. */
391 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
392 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
393 printf("ACPI identify failed, other PM system enabled.\n");
397 /* Initialize root tables. */
398 if (ACPI_FAILURE(acpi_Startup())) {
399 printf("ACPI: Try disabling either ACPI or apic support.\n");
403 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
404 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
406 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
407 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
409 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
410 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
412 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
414 sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN);
415 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
418 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
422 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
424 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
430 * Fetch some descriptive data from ACPI to put in our attach message.
433 acpi_probe(device_t dev)
436 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
438 device_set_desc(dev, acpi_desc);
440 return_VALUE (BUS_PROBE_NOWILDCARD);
444 acpi_attach(device_t dev)
446 struct acpi_softc *sc;
453 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
455 sc = device_get_softc(dev);
457 callout_init(&sc->susp_force_to, 1);
461 /* Initialize resource manager. */
462 acpi_rman_io.rm_type = RMAN_ARRAY;
463 acpi_rman_io.rm_start = 0;
464 acpi_rman_io.rm_end = 0xffff;
465 acpi_rman_io.rm_descr = "ACPI I/O ports";
466 if (rman_init(&acpi_rman_io) != 0)
467 panic("acpi rman_init IO ports failed");
468 acpi_rman_mem.rm_type = RMAN_ARRAY;
469 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
470 if (rman_init(&acpi_rman_mem) != 0)
471 panic("acpi rman_init memory failed");
473 /* Initialise the ACPI mutex */
474 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
477 * Set the globals from our tunables. This is needed because ACPI-CA
478 * uses UINT8 for some values and we have no tunable_byte.
480 AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE;
481 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
482 AcpiGbl_UseDefaultRegisterWidths = acpi_ignore_reg_width ? TRUE : FALSE;
486 * Disable all debugging layers and levels.
492 /* Override OS interfaces if the user requested. */
493 acpi_reset_interfaces(dev);
495 /* Load ACPI name space. */
496 status = AcpiLoadTables();
497 if (ACPI_FAILURE(status)) {
498 device_printf(dev, "Could not load Namespace: %s\n",
499 AcpiFormatException(status));
503 /* Handle MCFG table if present. */
507 * Note that some systems (specifically, those with namespace evaluation
508 * issues that require the avoidance of parts of the namespace) must
509 * avoid running _INI and _STA on everything, as well as dodging the final
512 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
514 * XXX We should arrange for the object init pass after we have attached
515 * all our child devices, but on many systems it works here.
518 if (testenv("debug.acpi.avoid"))
519 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
521 /* Bring the hardware and basic handlers online. */
522 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
523 device_printf(dev, "Could not enable ACPI: %s\n",
524 AcpiFormatException(status));
529 * Call the ECDT probe function to provide EC functionality before
530 * the namespace has been evaluated.
532 * XXX This happens before the sysresource devices have been probed and
533 * attached so its resources come from nexus0. In practice, this isn't
534 * a problem but should be addressed eventually.
536 acpi_ec_ecdt_probe(dev);
538 /* Bring device objects and regions online. */
539 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
540 device_printf(dev, "Could not initialize ACPI objects: %s\n",
541 AcpiFormatException(status));
546 * Setup our sysctl tree.
548 * XXX: This doesn't check to make sure that none of these fail.
550 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
551 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
552 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
553 device_get_name(dev), CTLFLAG_RD, 0, "");
554 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
555 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
556 0, 0, acpi_supported_sleep_state_sysctl, "A",
557 "List supported ACPI sleep states.");
558 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
559 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
560 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A",
561 "Power button ACPI sleep state.");
562 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
563 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
564 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A",
565 "Sleep button ACPI sleep state.");
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 "Lid ACPI sleep state. Set to S3 if you want to suspend your laptop when close the Lid.");
570 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
571 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
572 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
573 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
574 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
575 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
576 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
577 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
578 "sleep delay in seconds");
579 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
580 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
581 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
582 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
583 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
584 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
585 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
586 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
587 OID_AUTO, "handle_reboot", CTLFLAG_RW,
588 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
591 * Default to 1 second before sleeping to give some machines time to
594 sc->acpi_sleep_delay = 1;
596 sc->acpi_verbose = 1;
597 if ((env = kern_getenv("hw.acpi.verbose")) != NULL) {
598 if (strcmp(env, "0") != 0)
599 sc->acpi_verbose = 1;
603 /* Only enable reboot by default if the FADT says it is available. */
604 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER)
605 sc->acpi_handle_reboot = 1;
607 #if !ACPI_REDUCED_HARDWARE
608 /* Only enable S4BIOS by default if the FACS says it is available. */
609 if (AcpiGbl_FACS != NULL && AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
613 /* Probe all supported sleep states. */
614 acpi_sleep_states[ACPI_STATE_S0] = TRUE;
615 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
616 if (ACPI_SUCCESS(AcpiEvaluateObject(ACPI_ROOT_OBJECT,
617 __DECONST(char *, AcpiGbl_SleepStateNames[state]), NULL, NULL)) &&
618 ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
619 acpi_sleep_states[state] = TRUE;
622 * Dispatch the default sleep state to devices. The lid switch is set
623 * to UNKNOWN by default to avoid surprising users.
625 sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ?
626 ACPI_STATE_S5 : ACPI_STATE_UNKNOWN;
627 sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN;
628 sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ?
629 ACPI_STATE_S1 : ACPI_STATE_UNKNOWN;
630 sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ?
631 ACPI_STATE_S3 : ACPI_STATE_UNKNOWN;
633 /* Pick the first valid sleep state for the sleep button default. */
634 sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN;
635 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
636 if (acpi_sleep_states[state]) {
637 sc->acpi_sleep_button_sx = state;
641 acpi_enable_fixed_events(sc);
644 * Scan the namespace and attach/initialise children.
647 /* Register our shutdown handler. */
648 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
652 * Register our acpi event handlers.
653 * XXX should be configurable eg. via userland policy manager.
655 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
656 sc, ACPI_EVENT_PRI_LAST);
657 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
658 sc, ACPI_EVENT_PRI_LAST);
660 /* Flag our initial states. */
661 sc->acpi_enabled = TRUE;
662 sc->acpi_sstate = ACPI_STATE_S0;
663 sc->acpi_sleep_disabled = TRUE;
665 /* Create the control device */
666 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0664,
668 sc->acpi_dev_t->si_drv1 = sc;
670 if ((error = acpi_machdep_init(dev)))
673 /* Register ACPI again to pass the correct argument of pm_func. */
674 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
676 if (!acpi_disabled("bus")) {
677 EVENTHANDLER_REGISTER(dev_lookup, acpi_lookup, NULL, 1000);
678 acpi_probe_children(dev);
681 /* Update all GPEs and enable runtime GPEs. */
682 status = AcpiUpdateAllGpes();
683 if (ACPI_FAILURE(status))
684 device_printf(dev, "Could not update all GPEs: %s\n",
685 AcpiFormatException(status));
687 /* Allow sleep request after a while. */
688 callout_init_mtx(&acpi_sleep_timer, &acpi_mutex, 0);
689 callout_reset(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME,
690 acpi_sleep_enable, sc);
695 return_VALUE (error);
699 acpi_set_power_children(device_t dev, int state)
703 int dstate, i, numdevs;
705 if (device_get_children(dev, &devlist, &numdevs) != 0)
709 * Retrieve and set D-state for the sleep state if _SxD is present.
710 * Skip children who aren't attached since they are handled separately.
712 for (i = 0; i < numdevs; i++) {
715 if (device_is_attached(child) &&
716 acpi_device_pwr_for_sleep(dev, child, &dstate) == 0)
717 acpi_set_powerstate(child, dstate);
719 free(devlist, M_TEMP);
723 acpi_suspend(device_t dev)
729 error = bus_generic_suspend(dev);
731 acpi_set_power_children(dev, ACPI_STATE_D3);
737 acpi_resume(device_t dev)
742 acpi_set_power_children(dev, ACPI_STATE_D0);
744 return (bus_generic_resume(dev));
748 acpi_shutdown(device_t dev)
753 /* Allow children to shutdown first. */
754 bus_generic_shutdown(dev);
757 * Enable any GPEs that are able to power-on the system (i.e., RTC).
758 * Also, disable any that are not valid for this state (most).
760 acpi_wake_prep_walk(ACPI_STATE_S5);
766 * Handle a new device being added
769 acpi_add_child(device_t bus, u_int order, const char *name, int unit)
771 struct acpi_device *ad;
774 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
777 resource_list_init(&ad->ad_rl);
779 child = device_add_child_ordered(bus, order, name, unit);
781 device_set_ivars(child, ad);
788 acpi_print_child(device_t bus, device_t child)
790 struct acpi_device *adev = device_get_ivars(child);
791 struct resource_list *rl = &adev->ad_rl;
794 retval += bus_print_child_header(bus, child);
795 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#jx");
796 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#jx");
797 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd");
798 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%jd");
799 if (device_get_flags(child))
800 retval += printf(" flags %#x", device_get_flags(child));
801 retval += bus_print_child_domain(bus, child);
802 retval += bus_print_child_footer(bus, child);
808 * If this device is an ACPI child but no one claimed it, attempt
809 * to power it off. We'll power it back up when a driver is added.
811 * XXX Disabled for now since many necessary devices (like fdc and
812 * ATA) don't claim the devices we created for them but still expect
813 * them to be powered up.
816 acpi_probe_nomatch(device_t bus, device_t child)
818 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
819 acpi_set_powerstate(child, ACPI_STATE_D3);
824 * If a new driver has a chance to probe a child, first power it up.
826 * XXX Disabled for now (see acpi_probe_nomatch for details).
829 acpi_driver_added(device_t dev, driver_t *driver)
831 device_t child, *devlist;
834 DEVICE_IDENTIFY(driver, dev);
835 if (device_get_children(dev, &devlist, &numdevs))
837 for (i = 0; i < numdevs; i++) {
839 if (device_get_state(child) == DS_NOTPRESENT) {
840 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
841 acpi_set_powerstate(child, ACPI_STATE_D0);
842 if (device_probe_and_attach(child) != 0)
843 acpi_set_powerstate(child, ACPI_STATE_D3);
845 device_probe_and_attach(child);
849 free(devlist, M_TEMP);
852 /* Location hint for devctl(8) */
854 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
857 struct acpi_device *dinfo = device_get_ivars(child);
861 if (dinfo->ad_handle) {
862 snprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
863 if (ACPI_SUCCESS(acpi_GetInteger(dinfo->ad_handle, "_PXM", &pxm))) {
864 snprintf(buf2, 32, " _PXM=%d", pxm);
865 strlcat(buf, buf2, buflen);
868 snprintf(buf, buflen, "unknown");
873 /* PnP information for devctl(8) */
875 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
878 struct acpi_device *dinfo = device_get_ivars(child);
879 ACPI_DEVICE_INFO *adinfo;
881 if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo))) {
882 snprintf(buf, buflen, "unknown");
886 snprintf(buf, buflen, "_HID=%s _UID=%lu",
887 (adinfo->Valid & ACPI_VALID_HID) ?
888 adinfo->HardwareId.String : "none",
889 (adinfo->Valid & ACPI_VALID_UID) ?
890 strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL);
897 * Handle per-device ivars
900 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
902 struct acpi_device *ad;
904 if ((ad = device_get_ivars(child)) == NULL) {
905 device_printf(child, "device has no ivars\n");
909 /* ACPI and ISA compatibility ivars */
911 case ACPI_IVAR_HANDLE:
912 *(ACPI_HANDLE *)result = ad->ad_handle;
914 case ACPI_IVAR_PRIVATE:
915 *(void **)result = ad->ad_private;
917 case ACPI_IVAR_FLAGS:
918 *(int *)result = ad->ad_flags;
920 case ISA_IVAR_VENDORID:
921 case ISA_IVAR_SERIAL:
922 case ISA_IVAR_COMPATID:
925 case ISA_IVAR_LOGICALID:
926 *(int *)result = acpi_isa_get_logicalid(child);
929 *(uint8_t*)result = (ad->ad_cls_class >> 16) & 0xff;
931 case PCI_IVAR_SUBCLASS:
932 *(uint8_t*)result = (ad->ad_cls_class >> 8) & 0xff;
934 case PCI_IVAR_PROGIF:
935 *(uint8_t*)result = (ad->ad_cls_class >> 0) & 0xff;
945 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
947 struct acpi_device *ad;
949 if ((ad = device_get_ivars(child)) == NULL) {
950 device_printf(child, "device has no ivars\n");
955 case ACPI_IVAR_HANDLE:
956 ad->ad_handle = (ACPI_HANDLE)value;
958 case ACPI_IVAR_PRIVATE:
959 ad->ad_private = (void *)value;
961 case ACPI_IVAR_FLAGS:
962 ad->ad_flags = (int)value;
965 panic("bad ivar write request (%d)", index);
973 * Handle child resource allocation/removal
975 static struct resource_list *
976 acpi_get_rlist(device_t dev, device_t child)
978 struct acpi_device *ad;
980 ad = device_get_ivars(child);
985 acpi_match_resource_hint(device_t dev, int type, long value)
987 struct acpi_device *ad = device_get_ivars(dev);
988 struct resource_list *rl = &ad->ad_rl;
989 struct resource_list_entry *rle;
991 STAILQ_FOREACH(rle, rl, link) {
992 if (rle->type != type)
994 if (rle->start <= value && rle->end >= value)
1001 * Wire device unit numbers based on resource matches in hints.
1004 acpi_hint_device_unit(device_t acdev, device_t child, const char *name,
1009 int line, matches, unit;
1012 * Iterate over all the hints for the devices with the specified
1013 * name to see if one's resources are a subset of this device.
1016 while (resource_find_dev(&line, name, &unit, "at", NULL) == 0) {
1017 /* Must have an "at" for acpi or isa. */
1018 resource_string_value(name, unit, "at", &s);
1019 if (!(strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 ||
1020 strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0))
1024 * Check for matching resources. We must have at least one match.
1025 * Since I/O and memory resources cannot be shared, if we get a
1026 * match on either of those, ignore any mismatches in IRQs or DRQs.
1028 * XXX: We may want to revisit this to be more lenient and wire
1029 * as long as it gets one match.
1032 if (resource_long_value(name, unit, "port", &value) == 0) {
1034 * Floppy drive controllers are notorious for having a
1035 * wide variety of resources not all of which include the
1036 * first port that is specified by the hint (typically
1037 * 0x3f0) (see the comment above fdc_isa_alloc_resources()
1038 * in fdc_isa.c). However, they do all seem to include
1039 * port + 2 (e.g. 0x3f2) so for a floppy device, look for
1040 * 'value + 2' in the port resources instead of the hint
1043 if (strcmp(name, "fdc") == 0)
1045 if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value))
1050 if (resource_long_value(name, unit, "maddr", &value) == 0) {
1051 if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value))
1058 if (resource_long_value(name, unit, "irq", &value) == 0) {
1059 if (acpi_match_resource_hint(child, SYS_RES_IRQ, value))
1064 if (resource_long_value(name, unit, "drq", &value) == 0) {
1065 if (acpi_match_resource_hint(child, SYS_RES_DRQ, value))
1073 /* We have a winner! */
1081 * Fetch the NUMA domain for a device by mapping the value returned by
1082 * _PXM to a NUMA domain. If the device does not have a _PXM method,
1083 * -2 is returned. If any other error occurs, -1 is returned.
1086 acpi_parse_pxm(device_t dev)
1089 #if defined(__i386__) || defined(__amd64__)
1094 handle = acpi_get_handle(dev);
1097 status = acpi_GetInteger(handle, "_PXM", &pxm);
1098 if (ACPI_SUCCESS(status))
1099 return (acpi_map_pxm_to_vm_domainid(pxm));
1100 if (status == AE_NOT_FOUND)
1108 acpi_get_cpus(device_t dev, device_t child, enum cpu_sets op, size_t setsize,
1113 d = acpi_parse_pxm(child);
1115 return (bus_generic_get_cpus(dev, child, op, setsize, cpuset));
1119 if (setsize != sizeof(cpuset_t))
1121 *cpuset = cpuset_domain[d];
1124 error = bus_generic_get_cpus(dev, child, op, setsize, cpuset);
1127 if (setsize != sizeof(cpuset_t))
1129 CPU_AND(cpuset, &cpuset_domain[d]);
1132 return (bus_generic_get_cpus(dev, child, op, setsize, cpuset));
1137 * Fetch the NUMA domain for the given device 'dev'.
1139 * If a device has a _PXM method, map that to a NUMA domain.
1140 * Otherwise, pass the request up to the parent.
1141 * If there's no matching domain or the domain cannot be
1142 * determined, return ENOENT.
1145 acpi_get_domain(device_t dev, device_t child, int *domain)
1149 d = acpi_parse_pxm(child);
1157 /* No _PXM node; go up a level */
1158 return (bus_generic_get_domain(dev, child, domain));
1162 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
1163 * duplicates, we merge any in the sysresource attach routine.
1166 acpi_sysres_alloc(device_t dev)
1168 struct resource *res;
1169 struct resource_list *rl;
1170 struct resource_list_entry *rle;
1176 * Probe/attach any sysresource devices. This would be unnecessary if we
1177 * had multi-pass probe/attach.
1179 if (device_get_children(dev, &children, &child_count) != 0)
1181 for (i = 0; i < child_count; i++) {
1182 if (ACPI_ID_PROBE(dev, children[i], sysres_ids, NULL) <= 0)
1183 device_probe_and_attach(children[i]);
1185 free(children, M_TEMP);
1187 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
1188 STAILQ_FOREACH(rle, rl, link) {
1189 if (rle->res != NULL) {
1190 device_printf(dev, "duplicate resource for %jx\n", rle->start);
1194 /* Only memory and IO resources are valid here. */
1195 switch (rle->type) {
1196 case SYS_RES_IOPORT:
1199 case SYS_RES_MEMORY:
1200 rm = &acpi_rman_mem;
1206 /* Pre-allocate resource and add to our rman pool. */
1207 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1208 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
1210 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1212 } else if (bootverbose)
1213 device_printf(dev, "reservation of %jx, %jx (%d) failed\n",
1214 rle->start, rle->count, rle->type);
1220 * Reserve declared resources for devices found during attach once system
1221 * resources have been allocated.
1224 acpi_reserve_resources(device_t dev)
1226 struct resource_list_entry *rle;
1227 struct resource_list *rl;
1228 struct acpi_device *ad;
1229 struct acpi_softc *sc;
1233 sc = device_get_softc(dev);
1234 if (device_get_children(dev, &children, &child_count) != 0)
1236 for (i = 0; i < child_count; i++) {
1237 ad = device_get_ivars(children[i]);
1240 /* Don't reserve system resources. */
1241 if (ACPI_ID_PROBE(dev, children[i], sysres_ids, NULL) <= 0)
1244 STAILQ_FOREACH(rle, rl, link) {
1246 * Don't reserve IRQ resources. There are many sticky things
1247 * to get right otherwise (e.g. IRQs for psm, atkbd, and HPET
1248 * when using legacy routing).
1250 if (rle->type == SYS_RES_IRQ)
1254 * Don't reserve the resource if it is already allocated.
1255 * The acpi_ec(4) driver can allocate its resources early
1256 * if ECDT is present.
1258 if (rle->res != NULL)
1262 * Try to reserve the resource from our parent. If this
1263 * fails because the resource is a system resource, just
1264 * let it be. The resource range is already reserved so
1265 * that other devices will not use it. If the driver
1266 * needs to allocate the resource, then
1267 * acpi_alloc_resource() will sub-alloc from the system
1270 resource_list_reserve(rl, dev, children[i], rle->type, &rle->rid,
1271 rle->start, rle->end, rle->count, 0);
1274 free(children, M_TEMP);
1275 sc->acpi_resources_reserved = 1;
1279 acpi_set_resource(device_t dev, device_t child, int type, int rid,
1280 rman_res_t start, rman_res_t count)
1282 struct acpi_softc *sc = device_get_softc(dev);
1283 struct acpi_device *ad = device_get_ivars(child);
1284 struct resource_list *rl = &ad->ad_rl;
1285 ACPI_DEVICE_INFO *devinfo;
1289 /* Ignore IRQ resources for PCI link devices. */
1290 if (type == SYS_RES_IRQ &&
1291 ACPI_ID_PROBE(dev, child, pcilink_ids, NULL) <= 0)
1295 * Ignore most resources for PCI root bridges. Some BIOSes
1296 * incorrectly enumerate the memory ranges they decode as plain
1297 * memory resources instead of as ResourceProducer ranges. Other
1298 * BIOSes incorrectly list system resource entries for I/O ranges
1299 * under the PCI bridge. Do allow the one known-correct case on
1300 * x86 of a PCI bridge claiming the I/O ports used for PCI config
1303 if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) {
1304 if (ACPI_SUCCESS(AcpiGetObjectInfo(ad->ad_handle, &devinfo))) {
1305 if ((devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0) {
1306 #if defined(__i386__) || defined(__amd64__)
1307 allow = (type == SYS_RES_IOPORT && start == CONF1_ADDR_PORT);
1312 AcpiOsFree(devinfo);
1316 AcpiOsFree(devinfo);
1321 /* map with default for now */
1322 if (type == SYS_RES_IRQ)
1323 start = (rman_res_t)acpi_map_intr(child, (u_int)start,
1324 acpi_get_handle(child));
1327 /* If the resource is already allocated, fail. */
1328 if (resource_list_busy(rl, type, rid))
1331 /* If the resource is already reserved, release it. */
1332 if (resource_list_reserved(rl, type, rid))
1333 resource_list_unreserve(rl, dev, child, type, rid);
1335 /* Add the resource. */
1336 end = (start + count - 1);
1337 resource_list_add(rl, type, rid, start, end, count);
1339 /* Don't reserve resources until the system resources are allocated. */
1340 if (!sc->acpi_resources_reserved)
1343 /* Don't reserve system resources. */
1344 if (ACPI_ID_PROBE(dev, child, sysres_ids, NULL) <= 0)
1348 * Don't reserve IRQ resources. There are many sticky things to
1349 * get right otherwise (e.g. IRQs for psm, atkbd, and HPET when
1350 * using legacy routing).
1352 if (type == SYS_RES_IRQ)
1356 * Don't reserve resources for CPU devices. Some of these
1357 * resources need to be allocated as shareable, but reservations
1358 * are always non-shareable.
1360 if (device_get_devclass(child) == devclass_find("cpu"))
1364 * Reserve the resource.
1366 * XXX: Ignores failure for now. Failure here is probably a
1367 * BIOS/firmware bug?
1369 resource_list_reserve(rl, dev, child, type, &rid, start, end, count, 0);
1373 static struct resource *
1374 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
1375 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
1380 struct acpi_device *ad;
1381 struct resource_list_entry *rle;
1382 struct resource_list *rl;
1383 struct resource *res;
1384 int isdefault = RMAN_IS_DEFAULT_RANGE(start, end);
1387 * First attempt at allocating the resource. For direct children,
1388 * use resource_list_alloc() to handle reserved resources. For
1389 * other devices, pass the request up to our parent.
1391 if (bus == device_get_parent(child)) {
1392 ad = device_get_ivars(child);
1396 * Simulate the behavior of the ISA bus for direct children
1397 * devices. That is, if a non-default range is specified for
1398 * a resource that doesn't exist, use bus_set_resource() to
1399 * add the resource before allocating it. Note that these
1400 * resources will not be reserved.
1402 if (!isdefault && resource_list_find(rl, type, *rid) == NULL)
1403 resource_list_add(rl, type, *rid, start, end, count);
1404 res = resource_list_alloc(rl, bus, child, type, rid, start, end, count,
1407 if (res != NULL && type == SYS_RES_IRQ) {
1409 * Since bus_config_intr() takes immediate effect, we cannot
1410 * configure the interrupt associated with a device when we
1411 * parse the resources but have to defer it until a driver
1412 * actually allocates the interrupt via bus_alloc_resource().
1414 * XXX: Should we handle the lookup failing?
1416 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
1417 acpi_config_intr(child, &ares);
1422 * If this is an allocation of the "default" range for a given
1423 * RID, fetch the exact bounds for this resource from the
1424 * resource list entry to try to allocate the range from the
1425 * system resource regions.
1427 if (res == NULL && isdefault) {
1428 rle = resource_list_find(rl, type, *rid);
1436 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1437 start, end, count, flags);
1440 * If the first attempt failed and this is an allocation of a
1441 * specific range, try to satisfy the request via a suballocation
1442 * from our system resource regions.
1444 if (res == NULL && start + count - 1 == end)
1445 res = acpi_alloc_sysres(child, type, rid, start, end, count, flags);
1450 * Attempt to allocate a specific resource range from the system
1451 * resource ranges. Note that we only handle memory and I/O port
1455 acpi_alloc_sysres(device_t child, int type, int *rid, rman_res_t start,
1456 rman_res_t end, rman_res_t count, u_int flags)
1459 struct resource *res;
1462 case SYS_RES_IOPORT:
1465 case SYS_RES_MEMORY:
1466 rm = &acpi_rman_mem;
1472 KASSERT(start + count - 1 == end, ("wildcard resource range"));
1473 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1478 rman_set_rid(res, *rid);
1480 /* If requested, activate the resource using the parent's method. */
1481 if (flags & RF_ACTIVE)
1482 if (bus_activate_resource(child, type, *rid, res) != 0) {
1483 rman_release_resource(res);
1491 acpi_is_resource_managed(int type, struct resource *r)
1494 /* We only handle memory and IO resources through rman. */
1496 case SYS_RES_IOPORT:
1497 return (rman_is_region_manager(r, &acpi_rman_io));
1498 case SYS_RES_MEMORY:
1499 return (rman_is_region_manager(r, &acpi_rman_mem));
1505 acpi_adjust_resource(device_t bus, device_t child, int type, struct resource *r,
1506 rman_res_t start, rman_res_t end)
1509 if (acpi_is_resource_managed(type, r))
1510 return (rman_adjust_resource(r, start, end));
1511 return (bus_generic_adjust_resource(bus, child, type, r, start, end));
1515 acpi_release_resource(device_t bus, device_t child, int type, int rid,
1521 * If this resource belongs to one of our internal managers,
1522 * deactivate it and release it to the local pool.
1524 if (acpi_is_resource_managed(type, r)) {
1525 if (rman_get_flags(r) & RF_ACTIVE) {
1526 ret = bus_deactivate_resource(child, type, rid, r);
1530 return (rman_release_resource(r));
1533 return (bus_generic_rl_release_resource(bus, child, type, rid, r));
1537 acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1539 struct resource_list *rl;
1541 rl = acpi_get_rlist(bus, child);
1542 if (resource_list_busy(rl, type, rid)) {
1543 device_printf(bus, "delete_resource: Resource still owned by child"
1544 " (type=%d, rid=%d)\n", type, rid);
1547 resource_list_unreserve(rl, bus, child, type, rid);
1548 resource_list_delete(rl, type, rid);
1551 /* Allocate an IO port or memory resource, given its GAS. */
1553 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1554 struct resource **res, u_int flags)
1556 int error, res_type;
1559 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1562 /* We only support memory and IO spaces. */
1563 switch (gas->SpaceId) {
1564 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1565 res_type = SYS_RES_MEMORY;
1567 case ACPI_ADR_SPACE_SYSTEM_IO:
1568 res_type = SYS_RES_IOPORT;
1571 return (EOPNOTSUPP);
1575 * If the register width is less than 8, assume the BIOS author means
1576 * it is a bit field and just allocate a byte.
1578 if (gas->BitWidth && gas->BitWidth < 8)
1581 /* Validate the address after we're sure we support the space. */
1582 if (gas->Address == 0 || gas->BitWidth == 0)
1585 bus_set_resource(dev, res_type, *rid, gas->Address,
1587 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1592 bus_delete_resource(dev, res_type, *rid);
1597 /* Probe _HID and _CID for compatible ISA PNP ids. */
1599 acpi_isa_get_logicalid(device_t dev)
1601 ACPI_DEVICE_INFO *devinfo;
1605 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1607 /* Fetch and validate the HID. */
1608 if ((h = acpi_get_handle(dev)) == NULL ||
1609 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1612 pnpid = (devinfo->Valid & ACPI_VALID_HID) != 0 &&
1613 devinfo->HardwareId.Length >= ACPI_EISAID_STRING_SIZE ?
1614 PNP_EISAID(devinfo->HardwareId.String) : 0;
1615 AcpiOsFree(devinfo);
1617 return_VALUE (pnpid);
1621 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1623 ACPI_DEVICE_INFO *devinfo;
1624 ACPI_PNP_DEVICE_ID *ids;
1629 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1633 /* Fetch and validate the CID */
1634 if ((h = acpi_get_handle(dev)) == NULL ||
1635 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1638 if ((devinfo->Valid & ACPI_VALID_CID) == 0) {
1639 AcpiOsFree(devinfo);
1643 if (devinfo->CompatibleIdList.Count < count)
1644 count = devinfo->CompatibleIdList.Count;
1645 ids = devinfo->CompatibleIdList.Ids;
1646 for (i = 0, valid = 0; i < count; i++)
1647 if (ids[i].Length >= ACPI_EISAID_STRING_SIZE &&
1648 strncmp(ids[i].String, "PNP", 3) == 0) {
1649 *pnpid++ = PNP_EISAID(ids[i].String);
1652 AcpiOsFree(devinfo);
1654 return_VALUE (valid);
1658 acpi_device_id_probe(device_t bus, device_t dev, char **ids, char **match)
1665 h = acpi_get_handle(dev);
1666 if (ids == NULL || h == NULL)
1668 t = acpi_get_type(dev);
1669 if (t != ACPI_TYPE_DEVICE && t != ACPI_TYPE_PROCESSOR)
1672 /* Try to match one of the array of IDs with a HID or CID. */
1673 for (i = 0; ids[i] != NULL; i++) {
1674 rv = acpi_MatchHid(h, ids[i]);
1675 if (rv == ACPI_MATCHHID_NOMATCH)
1678 if (match != NULL) {
1681 return ((rv == ACPI_MATCHHID_HID)?
1682 BUS_PROBE_DEFAULT : BUS_PROBE_LOW_PRIORITY);
1688 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1689 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1694 h = ACPI_ROOT_OBJECT;
1695 else if ((h = acpi_get_handle(dev)) == NULL)
1696 return (AE_BAD_PARAMETER);
1697 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1701 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1703 struct acpi_softc *sc;
1708 handle = acpi_get_handle(dev);
1711 * XXX If we find these devices, don't try to power them down.
1712 * The serial and IRDA ports on my T23 hang the system when
1713 * set to D3 and it appears that such legacy devices may
1714 * need special handling in their drivers.
1716 if (dstate == NULL || handle == NULL ||
1717 acpi_MatchHid(handle, "PNP0500") ||
1718 acpi_MatchHid(handle, "PNP0501") ||
1719 acpi_MatchHid(handle, "PNP0502") ||
1720 acpi_MatchHid(handle, "PNP0510") ||
1721 acpi_MatchHid(handle, "PNP0511"))
1725 * Override next state with the value from _SxD, if present.
1726 * Note illegal _S0D is evaluated because some systems expect this.
1728 sc = device_get_softc(bus);
1729 snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1730 status = acpi_GetInteger(handle, sxd, dstate);
1731 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
1732 device_printf(dev, "failed to get %s on %s: %s\n", sxd,
1733 acpi_name(handle), AcpiFormatException(status));
1740 /* Callback arg for our implementation of walking the namespace. */
1741 struct acpi_device_scan_ctx {
1742 acpi_scan_cb_t user_fn;
1748 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1750 struct acpi_device_scan_ctx *ctx;
1751 device_t dev, old_dev;
1753 ACPI_OBJECT_TYPE type;
1756 * Skip this device if we think we'll have trouble with it or it is
1757 * the parent where the scan began.
1759 ctx = (struct acpi_device_scan_ctx *)arg;
1760 if (acpi_avoid(h) || h == ctx->parent)
1763 /* If this is not a valid device type (e.g., a method), skip it. */
1764 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1766 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1767 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1771 * Call the user function with the current device. If it is unchanged
1772 * afterwards, return. Otherwise, we update the handle to the new dev.
1774 old_dev = acpi_get_device(h);
1776 status = ctx->user_fn(h, &dev, level, ctx->arg);
1777 if (ACPI_FAILURE(status) || old_dev == dev)
1780 /* Remove the old child and its connection to the handle. */
1781 if (old_dev != NULL) {
1782 device_delete_child(device_get_parent(old_dev), old_dev);
1783 AcpiDetachData(h, acpi_fake_objhandler);
1786 /* Recreate the handle association if the user created a device. */
1788 AcpiAttachData(h, acpi_fake_objhandler, dev);
1794 acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1795 acpi_scan_cb_t user_fn, void *arg)
1798 struct acpi_device_scan_ctx ctx;
1800 if (acpi_disabled("children"))
1804 h = ACPI_ROOT_OBJECT;
1805 else if ((h = acpi_get_handle(dev)) == NULL)
1806 return (AE_BAD_PARAMETER);
1807 ctx.user_fn = user_fn;
1810 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1811 acpi_device_scan_cb, NULL, &ctx, NULL));
1815 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1816 * device power states since it's close enough to ACPI.
1819 acpi_set_powerstate(device_t child, int state)
1824 h = acpi_get_handle(child);
1825 if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX)
1830 /* Ignore errors if the power methods aren't present. */
1831 status = acpi_pwr_switch_consumer(h, state);
1832 if (ACPI_SUCCESS(status)) {
1834 device_printf(child, "set ACPI power state D%d on %s\n",
1835 state, acpi_name(h));
1836 } else if (status != AE_NOT_FOUND)
1837 device_printf(child,
1838 "failed to set ACPI power state D%d on %s: %s\n", state,
1839 acpi_name(h), AcpiFormatException(status));
1845 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1847 int result, cid_count, i;
1848 uint32_t lid, cids[8];
1850 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1853 * ISA-style drivers attached to ACPI may persist and
1854 * probe manually if we return ENOENT. We never want
1855 * that to happen, so don't ever return it.
1859 /* Scan the supplied IDs for a match */
1860 lid = acpi_isa_get_logicalid(child);
1861 cid_count = acpi_isa_get_compatid(child, cids, 8);
1862 while (ids && ids->ip_id) {
1863 if (lid == ids->ip_id) {
1867 for (i = 0; i < cid_count; i++) {
1868 if (cids[i] == ids->ip_id) {
1877 if (result == 0 && ids->ip_desc)
1878 device_set_desc(child, ids->ip_desc);
1880 return_VALUE (result);
1884 * Look for a MCFG table. If it is present, use the settings for
1885 * domain (segment) 0 to setup PCI config space access via the memory
1888 * On non-x86 architectures (arm64 for now), this will be done from the
1889 * PCI host bridge driver.
1892 acpi_enable_pcie(void)
1894 #if defined(__i386__) || defined(__amd64__)
1895 ACPI_TABLE_HEADER *hdr;
1896 ACPI_MCFG_ALLOCATION *alloc, *end;
1899 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1900 if (ACPI_FAILURE(status))
1903 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1904 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1905 while (alloc < end) {
1906 if (alloc->PciSegment == 0) {
1907 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1908 alloc->EndBusNumber);
1917 * Scan all of the ACPI namespace and attach child devices.
1919 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1920 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1921 * However, in violation of the spec, some systems place their PCI link
1922 * devices in \, so we have to walk the whole namespace. We check the
1923 * type of namespace nodes, so this should be ok.
1926 acpi_probe_children(device_t bus)
1929 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1932 * Scan the namespace and insert placeholders for all the devices that
1933 * we find. We also probe/attach any early devices.
1935 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1936 * we want to create nodes for all devices, not just those that are
1937 * currently present. (This assumes that we don't want to create/remove
1938 * devices as they appear, which might be smarter.)
1940 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1941 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
1944 /* Pre-allocate resources for our rman from any sysresource devices. */
1945 acpi_sysres_alloc(bus);
1947 /* Reserve resources already allocated to children. */
1948 acpi_reserve_resources(bus);
1950 /* Create any static children by calling device identify methods. */
1951 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1952 bus_generic_probe(bus);
1954 /* Probe/attach all children, created statically and from the namespace. */
1955 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "acpi bus_generic_attach\n"));
1956 bus_generic_attach(bus);
1958 /* Attach wake sysctls. */
1959 acpi_wake_sysctl_walk(bus);
1961 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1966 * Determine the probe order for a given device.
1969 acpi_probe_order(ACPI_HANDLE handle, int *order)
1971 ACPI_OBJECT_TYPE type;
1975 * 1. I/O port and memory system resource holders
1976 * 2. Clocks and timers (to handle early accesses)
1977 * 3. Embedded controllers (to handle early accesses)
1978 * 4. PCI Link Devices
1980 AcpiGetType(handle, &type);
1981 if (type == ACPI_TYPE_PROCESSOR)
1983 else if (acpi_MatchHid(handle, "PNP0C01") ||
1984 acpi_MatchHid(handle, "PNP0C02"))
1986 else if (acpi_MatchHid(handle, "PNP0100") ||
1987 acpi_MatchHid(handle, "PNP0103") ||
1988 acpi_MatchHid(handle, "PNP0B00"))
1990 else if (acpi_MatchHid(handle, "PNP0C09"))
1992 else if (acpi_MatchHid(handle, "PNP0C0F"))
1997 * Evaluate a child device and determine whether we might attach a device to
2001 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
2003 ACPI_DEVICE_INFO *devinfo;
2004 struct acpi_device *ad;
2005 struct acpi_prw_data prw;
2006 ACPI_OBJECT_TYPE type;
2008 device_t bus, child;
2012 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2014 if (acpi_disabled("children"))
2015 return_ACPI_STATUS (AE_OK);
2017 /* Skip this device if we think we'll have trouble with it. */
2018 if (acpi_avoid(handle))
2019 return_ACPI_STATUS (AE_OK);
2021 bus = (device_t)context;
2022 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
2023 handle_str = acpi_name(handle);
2025 case ACPI_TYPE_DEVICE:
2027 * Since we scan from \, be sure to skip system scope objects.
2028 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
2029 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
2030 * during the initialization and \_TZ_ is to support Notify() on it.
2032 if (strcmp(handle_str, "\\_SB_") == 0 ||
2033 strcmp(handle_str, "\\_TZ_") == 0)
2035 if (acpi_parse_prw(handle, &prw) == 0)
2036 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
2039 * Ignore devices that do not have a _HID or _CID. They should
2040 * be discovered by other buses (e.g. the PCI bus driver).
2042 if (!acpi_has_hid(handle))
2045 case ACPI_TYPE_PROCESSOR:
2046 case ACPI_TYPE_THERMAL:
2047 case ACPI_TYPE_POWER:
2049 * Create a placeholder device for this node. Sort the
2050 * placeholder so that the probe/attach passes will run
2051 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
2052 * are reserved for special objects (i.e., system
2055 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
2056 order = level * 10 + ACPI_DEV_BASE_ORDER;
2057 acpi_probe_order(handle, &order);
2058 child = BUS_ADD_CHILD(bus, order, NULL, -1);
2062 /* Associate the handle with the device_t and vice versa. */
2063 acpi_set_handle(child, handle);
2064 AcpiAttachData(handle, acpi_fake_objhandler, child);
2067 * Check that the device is present. If it's not present,
2068 * leave it disabled (so that we have a device_t attached to
2069 * the handle, but we don't probe it).
2071 * XXX PCI link devices sometimes report "present" but not
2072 * "functional" (i.e. if disabled). Go ahead and probe them
2073 * anyway since we may enable them later.
2075 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
2076 /* Never disable PCI link devices. */
2077 if (acpi_MatchHid(handle, "PNP0C0F"))
2080 * Docking stations should remain enabled since the system
2081 * may be undocked at boot.
2083 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
2086 device_disable(child);
2091 * Get the device's resource settings and attach them.
2092 * Note that if the device has _PRS but no _CRS, we need
2093 * to decide when it's appropriate to try to configure the
2094 * device. Ignore the return value here; it's OK for the
2095 * device not to have any resources.
2097 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
2099 ad = device_get_ivars(child);
2100 ad->ad_cls_class = 0xffffff;
2101 if (ACPI_SUCCESS(AcpiGetObjectInfo(handle, &devinfo))) {
2102 if ((devinfo->Valid & ACPI_VALID_CLS) != 0 &&
2103 devinfo->ClassCode.Length >= ACPI_PCICLS_STRING_SIZE) {
2104 ad->ad_cls_class = strtoul(devinfo->ClassCode.String,
2107 AcpiOsFree(devinfo);
2113 return_ACPI_STATUS (AE_OK);
2117 * AcpiAttachData() requires an object handler but never uses it. This is a
2118 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
2121 acpi_fake_objhandler(ACPI_HANDLE h, void *data)
2126 acpi_shutdown_final(void *arg, int howto)
2128 struct acpi_softc *sc = (struct acpi_softc *)arg;
2133 * XXX Shutdown code should only run on the BSP (cpuid 0).
2134 * Some chipsets do not power off the system correctly if called from
2137 if ((howto & RB_POWEROFF) != 0) {
2138 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
2139 if (ACPI_FAILURE(status)) {
2140 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2141 AcpiFormatException(status));
2144 device_printf(sc->acpi_dev, "Powering system off\n");
2145 intr = intr_disable();
2146 status = AcpiEnterSleepState(ACPI_STATE_S5);
2147 if (ACPI_FAILURE(status)) {
2149 device_printf(sc->acpi_dev, "power-off failed - %s\n",
2150 AcpiFormatException(status));
2154 device_printf(sc->acpi_dev, "power-off failed - timeout\n");
2156 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) {
2157 /* Reboot using the reset register. */
2158 status = AcpiReset();
2159 if (ACPI_SUCCESS(status)) {
2161 device_printf(sc->acpi_dev, "reset failed - timeout\n");
2162 } else if (status != AE_NOT_EXIST)
2163 device_printf(sc->acpi_dev, "reset failed - %s\n",
2164 AcpiFormatException(status));
2165 } else if (sc->acpi_do_disable && panicstr == NULL) {
2167 * Only disable ACPI if the user requested. On some systems, writing
2168 * the disable value to SMI_CMD hangs the system.
2170 device_printf(sc->acpi_dev, "Shutting down\n");
2176 acpi_enable_fixed_events(struct acpi_softc *sc)
2178 static int first_time = 1;
2180 /* Enable and clear fixed events and install handlers. */
2181 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
2182 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
2183 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
2184 acpi_event_power_button_sleep, sc);
2186 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
2188 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
2189 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
2190 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
2191 acpi_event_sleep_button_sleep, sc);
2193 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
2200 * Returns true if the device is actually present and should
2201 * be attached to. This requires the present, enabled, UI-visible
2202 * and diagnostics-passed bits to be set.
2205 acpi_DeviceIsPresent(device_t dev)
2211 h = acpi_get_handle(dev);
2215 * Certain Treadripper boards always returns 0 for FreeBSD because it
2216 * only returns non-zero for the OS string "Windows 2015". Otherwise it
2217 * will return zero. Force them to always be treated as present.
2218 * Beata versions were worse: they always returned 0.
2220 if (acpi_MatchHid(h, "AMDI0020") || acpi_MatchHid(h, "AMDI0010"))
2223 status = acpi_GetInteger(h, "_STA", &s);
2226 * If no _STA method or if it failed, then assume that
2227 * the device is present.
2229 if (ACPI_FAILURE(status))
2232 return (ACPI_DEVICE_PRESENT(s) ? TRUE : FALSE);
2236 * Returns true if the battery is actually present and inserted.
2239 acpi_BatteryIsPresent(device_t dev)
2245 h = acpi_get_handle(dev);
2248 status = acpi_GetInteger(h, "_STA", &s);
2251 * If no _STA method or if it failed, then assume that
2252 * the device is present.
2254 if (ACPI_FAILURE(status))
2257 return (ACPI_BATTERY_PRESENT(s) ? TRUE : FALSE);
2261 * Returns true if a device has at least one valid device ID.
2264 acpi_has_hid(ACPI_HANDLE h)
2266 ACPI_DEVICE_INFO *devinfo;
2270 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2274 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
2276 else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
2277 if (devinfo->CompatibleIdList.Count > 0)
2280 AcpiOsFree(devinfo);
2285 * Match a HID string against a handle
2286 * returns ACPI_MATCHHID_HID if _HID match
2287 * ACPI_MATCHHID_CID if _CID match and not _HID match.
2288 * ACPI_MATCHHID_NOMATCH=0 if no match.
2291 acpi_MatchHid(ACPI_HANDLE h, const char *hid)
2293 ACPI_DEVICE_INFO *devinfo;
2297 if (hid == NULL || h == NULL ||
2298 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2299 return (ACPI_MATCHHID_NOMATCH);
2301 ret = ACPI_MATCHHID_NOMATCH;
2302 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
2303 strcmp(hid, devinfo->HardwareId.String) == 0)
2304 ret = ACPI_MATCHHID_HID;
2305 else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
2306 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
2307 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
2308 ret = ACPI_MATCHHID_CID;
2313 AcpiOsFree(devinfo);
2318 * Return the handle of a named object within our scope, ie. that of (parent)
2319 * or one if its parents.
2322 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
2327 /* Walk back up the tree to the root */
2329 status = AcpiGetHandle(parent, path, &r);
2330 if (ACPI_SUCCESS(status)) {
2334 /* XXX Return error here? */
2335 if (status != AE_NOT_FOUND)
2337 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
2338 return (AE_NOT_FOUND);
2344 * Allocate a buffer with a preset data size.
2347 acpi_AllocBuffer(int size)
2351 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
2354 buf->Pointer = (void *)(buf + 1);
2359 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
2362 ACPI_OBJECT_LIST args;
2364 arg1.Type = ACPI_TYPE_INTEGER;
2365 arg1.Integer.Value = number;
2367 args.Pointer = &arg1;
2369 return (AcpiEvaluateObject(handle, path, &args, NULL));
2373 * Evaluate a path that should return an integer.
2376 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
2383 handle = ACPI_ROOT_OBJECT;
2386 * Assume that what we've been pointed at is an Integer object, or
2387 * a method that will return an Integer.
2389 buf.Pointer = ¶m;
2390 buf.Length = sizeof(param);
2391 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2392 if (ACPI_SUCCESS(status)) {
2393 if (param.Type == ACPI_TYPE_INTEGER)
2394 *number = param.Integer.Value;
2400 * In some applications, a method that's expected to return an Integer
2401 * may instead return a Buffer (probably to simplify some internal
2402 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
2403 * convert it into an Integer as best we can.
2407 if (status == AE_BUFFER_OVERFLOW) {
2408 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
2409 status = AE_NO_MEMORY;
2411 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2412 if (ACPI_SUCCESS(status))
2413 status = acpi_ConvertBufferToInteger(&buf, number);
2414 AcpiOsFree(buf.Pointer);
2421 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2427 p = (ACPI_OBJECT *)bufp->Pointer;
2428 if (p->Type == ACPI_TYPE_INTEGER) {
2429 *number = p->Integer.Value;
2432 if (p->Type != ACPI_TYPE_BUFFER)
2434 if (p->Buffer.Length > sizeof(int))
2435 return (AE_BAD_DATA);
2438 val = p->Buffer.Pointer;
2439 for (i = 0; i < p->Buffer.Length; i++)
2440 *number += val[i] << (i * 8);
2445 * Iterate over the elements of an a package object, calling the supplied
2446 * function for each element.
2448 * XXX possible enhancement might be to abort traversal on error.
2451 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2452 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2457 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2458 return (AE_BAD_PARAMETER);
2460 /* Iterate over components */
2462 comp = pkg->Package.Elements;
2463 for (; i < pkg->Package.Count; i++, comp++)
2470 * Find the (index)th resource object in a set.
2473 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2478 rp = (ACPI_RESOURCE *)buf->Pointer;
2482 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2483 return (AE_BAD_PARAMETER);
2485 /* Check for terminator */
2486 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2487 return (AE_NOT_FOUND);
2488 rp = ACPI_NEXT_RESOURCE(rp);
2497 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2499 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2500 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2501 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2504 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2507 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2512 /* Initialise the buffer if necessary. */
2513 if (buf->Pointer == NULL) {
2514 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2515 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2516 return (AE_NO_MEMORY);
2517 rp = (ACPI_RESOURCE *)buf->Pointer;
2518 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2519 rp->Length = ACPI_RS_SIZE_MIN;
2525 * Scan the current buffer looking for the terminator.
2526 * This will either find the terminator or hit the end
2527 * of the buffer and return an error.
2529 rp = (ACPI_RESOURCE *)buf->Pointer;
2531 /* Range check, don't go outside the buffer */
2532 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2533 return (AE_BAD_PARAMETER);
2534 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2536 rp = ACPI_NEXT_RESOURCE(rp);
2540 * Check the size of the buffer and expand if required.
2543 * size of existing resources before terminator +
2544 * size of new resource and header +
2545 * size of terminator.
2547 * Note that this loop should really only run once, unless
2548 * for some reason we are stuffing a *really* huge resource.
2550 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2551 res->Length + ACPI_RS_SIZE_NO_DATA +
2552 ACPI_RS_SIZE_MIN) >= buf->Length) {
2553 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2554 return (AE_NO_MEMORY);
2555 bcopy(buf->Pointer, newp, buf->Length);
2556 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2557 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
2558 AcpiOsFree(buf->Pointer);
2559 buf->Pointer = newp;
2560 buf->Length += buf->Length;
2563 /* Insert the new resource. */
2564 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2566 /* And add the terminator. */
2567 rp = ACPI_NEXT_RESOURCE(rp);
2568 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2569 rp->Length = ACPI_RS_SIZE_MIN;
2575 acpi_DSMQuery(ACPI_HANDLE h, uint8_t *uuid, int revision)
2578 * ACPI spec 9.1.1 defines this.
2580 * "Arg2: Function Index Represents a specific function whose meaning is
2581 * specific to the UUID and Revision ID. Function indices should start
2582 * with 1. Function number zero is a query function (see the special
2583 * return code defined below)."
2589 if (!ACPI_SUCCESS(acpi_EvaluateDSM(h, uuid, revision, 0, NULL, &buf))) {
2590 ACPI_INFO(("Failed to enumerate DSM functions\n"));
2594 obj = (ACPI_OBJECT *)buf.Pointer;
2595 KASSERT(obj, ("Object not allowed to be NULL\n"));
2598 * From ACPI 6.2 spec 9.1.1:
2599 * If Function Index = 0, a Buffer containing a function index bitfield.
2600 * Otherwise, the return value and type depends on the UUID and revision
2603 switch (obj->Type) {
2604 case ACPI_TYPE_BUFFER:
2605 ret = *(uint8_t *)obj->Buffer.Pointer;
2607 case ACPI_TYPE_INTEGER:
2608 ACPI_BIOS_WARNING((AE_INFO,
2609 "Possibly buggy BIOS with ACPI_TYPE_INTEGER for function enumeration\n"));
2610 ret = obj->Integer.Value & 0xFF;
2613 ACPI_WARNING((AE_INFO, "Unexpected return type %u\n", obj->Type));
2621 * DSM may return multiple types depending on the function. It is therefore
2622 * unsafe to use the typed evaluation. It is highly recommended that the caller
2623 * check the type of the returned object.
2626 acpi_EvaluateDSM(ACPI_HANDLE handle, uint8_t *uuid, int revision,
2627 uint64_t function, union acpi_object *package, ACPI_BUFFER *out_buf)
2630 ACPI_OBJECT_LIST arglist;
2634 if (out_buf == NULL)
2635 return (AE_NO_MEMORY);
2637 arg[0].Type = ACPI_TYPE_BUFFER;
2638 arg[0].Buffer.Length = ACPI_UUID_LENGTH;
2639 arg[0].Buffer.Pointer = uuid;
2640 arg[1].Type = ACPI_TYPE_INTEGER;
2641 arg[1].Integer.Value = revision;
2642 arg[2].Type = ACPI_TYPE_INTEGER;
2643 arg[2].Integer.Value = function;
2647 arg[3].Type = ACPI_TYPE_PACKAGE;
2648 arg[3].Package.Count = 0;
2649 arg[3].Package.Elements = NULL;
2652 arglist.Pointer = arg;
2655 buf.Length = ACPI_ALLOCATE_BUFFER;
2656 status = AcpiEvaluateObject(handle, "_DSM", &arglist, &buf);
2657 if (ACPI_FAILURE(status))
2660 KASSERT(ACPI_SUCCESS(status), ("Unexpected status"));
2667 acpi_EvaluateOSC(ACPI_HANDLE handle, uint8_t *uuid, int revision, int count,
2668 uint32_t *caps_in, uint32_t *caps_out, bool query)
2670 ACPI_OBJECT arg[4], *ret;
2671 ACPI_OBJECT_LIST arglist;
2675 arglist.Pointer = arg;
2677 arg[0].Type = ACPI_TYPE_BUFFER;
2678 arg[0].Buffer.Length = ACPI_UUID_LENGTH;
2679 arg[0].Buffer.Pointer = uuid;
2680 arg[1].Type = ACPI_TYPE_INTEGER;
2681 arg[1].Integer.Value = revision;
2682 arg[2].Type = ACPI_TYPE_INTEGER;
2683 arg[2].Integer.Value = count;
2684 arg[3].Type = ACPI_TYPE_BUFFER;
2685 arg[3].Buffer.Length = count * sizeof(*caps_in);
2686 arg[3].Buffer.Pointer = (uint8_t *)caps_in;
2687 caps_in[0] = query ? 1 : 0;
2689 buf.Length = ACPI_ALLOCATE_BUFFER;
2690 status = AcpiEvaluateObjectTyped(handle, "_OSC", &arglist, &buf,
2692 if (ACPI_FAILURE(status))
2694 if (caps_out != NULL) {
2696 if (ret->Buffer.Length != count * sizeof(*caps_out)) {
2697 AcpiOsFree(buf.Pointer);
2698 return (AE_BUFFER_OVERFLOW);
2700 bcopy(ret->Buffer.Pointer, caps_out, ret->Buffer.Length);
2702 AcpiOsFree(buf.Pointer);
2707 * Set interrupt model.
2710 acpi_SetIntrModel(int model)
2713 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2717 * Walk subtables of a table and call a callback routine for each
2718 * subtable. The caller should provide the first subtable and a
2719 * pointer to the end of the table. This can be used to walk tables
2720 * such as MADT and SRAT that use subtable entries.
2723 acpi_walk_subtables(void *first, void *end, acpi_subtable_handler *handler,
2726 ACPI_SUBTABLE_HEADER *entry;
2728 for (entry = first; (void *)entry < end; ) {
2729 /* Avoid an infinite loop if we hit a bogus entry. */
2730 if (entry->Length < sizeof(ACPI_SUBTABLE_HEADER))
2733 handler(entry, arg);
2734 entry = ACPI_ADD_PTR(ACPI_SUBTABLE_HEADER, entry, entry->Length);
2739 * DEPRECATED. This interface has serious deficiencies and will be
2742 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2743 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2746 acpi_SetSleepState(struct acpi_softc *sc, int state)
2751 device_printf(sc->acpi_dev,
2752 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2755 return (acpi_EnterSleepState(sc, state));
2758 #if defined(__amd64__) || defined(__i386__)
2760 acpi_sleep_force_task(void *context)
2762 struct acpi_softc *sc = (struct acpi_softc *)context;
2764 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2765 device_printf(sc->acpi_dev, "force sleep state S%d failed\n",
2766 sc->acpi_next_sstate);
2770 acpi_sleep_force(void *arg)
2772 struct acpi_softc *sc = (struct acpi_softc *)arg;
2774 device_printf(sc->acpi_dev,
2775 "suspend request timed out, forcing sleep now\n");
2777 * XXX Suspending from callout causes freezes in DEVICE_SUSPEND().
2778 * Suspend from acpi_task thread instead.
2780 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
2781 acpi_sleep_force_task, sc)))
2782 device_printf(sc->acpi_dev, "AcpiOsExecute() for sleeping failed\n");
2787 * Request that the system enter the given suspend state. All /dev/apm
2788 * devices and devd(8) will be notified. Userland then has a chance to
2789 * save state and acknowledge the request. The system sleeps once all
2793 acpi_ReqSleepState(struct acpi_softc *sc, int state)
2795 #if defined(__amd64__) || defined(__i386__)
2796 struct apm_clone_data *clone;
2799 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
2801 if (!acpi_sleep_states[state])
2802 return (EOPNOTSUPP);
2805 * If a reboot/shutdown/suspend request is already in progress or
2806 * suspend is blocked due to an upcoming shutdown, just return.
2808 if (rebooting || sc->acpi_next_sstate != 0 || suspend_blocked) {
2812 /* Wait until sleep is enabled. */
2813 while (sc->acpi_sleep_disabled) {
2819 sc->acpi_next_sstate = state;
2821 /* S5 (soft-off) should be entered directly with no waiting. */
2822 if (state == ACPI_STATE_S5) {
2824 status = acpi_EnterSleepState(sc, state);
2825 return (ACPI_SUCCESS(status) ? 0 : ENXIO);
2828 /* Record the pending state and notify all apm devices. */
2829 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2830 clone->notify_status = APM_EV_NONE;
2831 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
2832 selwakeuppri(&clone->sel_read, PZERO);
2833 KNOTE_LOCKED(&clone->sel_read.si_note, 0);
2837 /* If devd(8) is not running, immediately enter the sleep state. */
2838 if (!devctl_process_running()) {
2840 status = acpi_EnterSleepState(sc, state);
2841 return (ACPI_SUCCESS(status) ? 0 : ENXIO);
2845 * Set a timeout to fire if userland doesn't ack the suspend request
2846 * in time. This way we still eventually go to sleep if we were
2847 * overheating or running low on battery, even if userland is hung.
2848 * We cancel this timeout once all userland acks are in or the
2849 * suspend request is aborted.
2851 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2854 /* Now notify devd(8) also. */
2855 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2859 /* This platform does not support acpi suspend/resume. */
2860 return (EOPNOTSUPP);
2865 * Acknowledge (or reject) a pending sleep state. The caller has
2866 * prepared for suspend and is now ready for it to proceed. If the
2867 * error argument is non-zero, it indicates suspend should be cancelled
2868 * and gives an errno value describing why. Once all votes are in,
2869 * we suspend the system.
2872 acpi_AckSleepState(struct apm_clone_data *clone, int error)
2874 #if defined(__amd64__) || defined(__i386__)
2875 struct acpi_softc *sc;
2878 /* If no pending sleep state, return an error. */
2880 sc = clone->acpi_sc;
2881 if (sc->acpi_next_sstate == 0) {
2886 /* Caller wants to abort suspend process. */
2888 sc->acpi_next_sstate = 0;
2889 callout_stop(&sc->susp_force_to);
2890 device_printf(sc->acpi_dev,
2891 "listener on %s cancelled the pending suspend\n",
2892 devtoname(clone->cdev));
2898 * Mark this device as acking the suspend request. Then, walk through
2899 * all devices, seeing if they agree yet. We only count devices that
2900 * are writable since read-only devices couldn't ack the request.
2903 clone->notify_status = APM_EV_ACKED;
2904 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2905 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2906 clone->notify_status != APM_EV_ACKED) {
2912 /* If all devices have voted "yes", we will suspend now. */
2914 callout_stop(&sc->susp_force_to);
2918 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2923 /* This platform does not support acpi suspend/resume. */
2924 return (EOPNOTSUPP);
2929 acpi_sleep_enable(void *arg)
2931 struct acpi_softc *sc = (struct acpi_softc *)arg;
2933 ACPI_LOCK_ASSERT(acpi);
2935 /* Reschedule if the system is not fully up and running. */
2936 if (!AcpiGbl_SystemAwakeAndRunning) {
2937 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
2941 sc->acpi_sleep_disabled = FALSE;
2945 acpi_sleep_disable(struct acpi_softc *sc)
2949 /* Fail if the system is not fully up and running. */
2950 if (!AcpiGbl_SystemAwakeAndRunning)
2954 status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK;
2955 sc->acpi_sleep_disabled = TRUE;
2961 enum acpi_sleep_state {
2964 ACPI_SS_DEV_SUSPEND,
2970 * Enter the desired system sleep state.
2972 * Currently we support S1-S5 but S4 is only S4BIOS
2975 acpi_EnterSleepState(struct acpi_softc *sc, int state)
2979 ACPI_EVENT_STATUS power_button_status;
2980 enum acpi_sleep_state slp_state;
2983 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2985 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
2986 return_ACPI_STATUS (AE_BAD_PARAMETER);
2987 if (!acpi_sleep_states[state]) {
2988 device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n",
2990 return (AE_SUPPORT);
2993 /* Re-entry once we're suspending is not allowed. */
2994 status = acpi_sleep_disable(sc);
2995 if (ACPI_FAILURE(status)) {
2996 device_printf(sc->acpi_dev,
2997 "suspend request ignored (not ready yet)\n");
3001 if (state == ACPI_STATE_S5) {
3003 * Shut down cleanly and power off. This will call us back through the
3004 * shutdown handlers.
3006 shutdown_nice(RB_POWEROFF);
3007 return_ACPI_STATUS (AE_OK);
3010 EVENTHANDLER_INVOKE(power_suspend_early);
3012 EVENTHANDLER_INVOKE(power_suspend);
3014 #ifdef EARLY_AP_STARTUP
3015 MPASS(mp_ncpus == 1 || smp_started);
3016 thread_lock(curthread);
3017 sched_bind(curthread, 0);
3018 thread_unlock(curthread);
3021 thread_lock(curthread);
3022 sched_bind(curthread, 0);
3023 thread_unlock(curthread);
3028 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
3029 * drivers need this.
3033 slp_state = ACPI_SS_NONE;
3035 sc->acpi_sstate = state;
3037 /* Enable any GPEs as appropriate and requested by the user. */
3038 acpi_wake_prep_walk(state);
3039 slp_state = ACPI_SS_GPE_SET;
3042 * Inform all devices that we are going to sleep. If at least one
3043 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
3045 * XXX Note that a better two-pass approach with a 'veto' pass
3046 * followed by a "real thing" pass would be better, but the current
3047 * bus interface does not provide for this.
3049 if (DEVICE_SUSPEND(root_bus) != 0) {
3050 device_printf(sc->acpi_dev, "device_suspend failed\n");
3053 slp_state = ACPI_SS_DEV_SUSPEND;
3055 status = AcpiEnterSleepStatePrep(state);
3056 if (ACPI_FAILURE(status)) {
3057 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
3058 AcpiFormatException(status));
3061 slp_state = ACPI_SS_SLP_PREP;
3063 if (sc->acpi_sleep_delay > 0)
3064 DELAY(sc->acpi_sleep_delay * 1000000);
3067 intr = intr_disable();
3068 if (state != ACPI_STATE_S1) {
3069 sleep_result = acpi_sleep_machdep(sc, state);
3070 acpi_wakeup_machdep(sc, state, sleep_result, 0);
3073 * XXX According to ACPI specification SCI_EN bit should be restored
3074 * by ACPI platform (BIOS, firmware) to its pre-sleep state.
3075 * Unfortunately some BIOSes fail to do that and that leads to
3076 * unexpected and serious consequences during wake up like a system
3077 * getting stuck in SMI handlers.
3078 * This hack is picked up from Linux, which claims that it follows
3081 if (sleep_result == 1 && state != ACPI_STATE_S4)
3082 AcpiWriteBitRegister(ACPI_BITREG_SCI_ENABLE, ACPI_ENABLE_EVENT);
3084 if (sleep_result == 1 && state == ACPI_STATE_S3) {
3086 * Prevent mis-interpretation of the wakeup by power button
3087 * as a request for power off.
3088 * Ideally we should post an appropriate wakeup event,
3089 * perhaps using acpi_event_power_button_wake or alike.
3091 * Clearing of power button status after wakeup is mandated
3092 * by ACPI specification in section "Fixed Power Button".
3094 * XXX As of ACPICA 20121114 AcpiGetEventStatus provides
3095 * status as 0/1 corressponding to inactive/active despite
3096 * its type being ACPI_EVENT_STATUS. In other words,
3097 * we should not test for ACPI_EVENT_FLAG_SET for time being.
3099 if (ACPI_SUCCESS(AcpiGetEventStatus(ACPI_EVENT_POWER_BUTTON,
3100 &power_button_status)) && power_button_status != 0) {
3101 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
3102 device_printf(sc->acpi_dev,
3103 "cleared fixed power button status\n");
3109 /* call acpi_wakeup_machdep() again with interrupt enabled */
3110 acpi_wakeup_machdep(sc, state, sleep_result, 1);
3112 AcpiLeaveSleepStatePrep(state);
3114 if (sleep_result == -1)
3117 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
3118 if (state == ACPI_STATE_S4)
3121 status = AcpiEnterSleepState(state);
3123 AcpiLeaveSleepStatePrep(state);
3124 if (ACPI_FAILURE(status)) {
3125 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
3126 AcpiFormatException(status));
3130 slp_state = ACPI_SS_SLEPT;
3133 * Back out state according to how far along we got in the suspend
3134 * process. This handles both the error and success cases.
3137 if (slp_state >= ACPI_SS_SLP_PREP)
3139 if (slp_state >= ACPI_SS_GPE_SET) {
3140 acpi_wake_prep_walk(state);
3141 sc->acpi_sstate = ACPI_STATE_S0;
3143 if (slp_state >= ACPI_SS_DEV_SUSPEND)
3144 DEVICE_RESUME(root_bus);
3145 if (slp_state >= ACPI_SS_SLP_PREP)
3146 AcpiLeaveSleepState(state);
3147 if (slp_state >= ACPI_SS_SLEPT) {
3148 #if defined(__i386__) || defined(__amd64__)
3149 /* NB: we are still using ACPI timecounter at this point. */
3152 acpi_resync_clock(sc);
3153 acpi_enable_fixed_events(sc);
3155 sc->acpi_next_sstate = 0;
3159 #ifdef EARLY_AP_STARTUP
3160 thread_lock(curthread);
3161 sched_unbind(curthread);
3162 thread_unlock(curthread);
3165 thread_lock(curthread);
3166 sched_unbind(curthread);
3167 thread_unlock(curthread);
3173 EVENTHANDLER_INVOKE(power_resume);
3175 /* Allow another sleep request after a while. */
3176 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
3178 /* Run /etc/rc.resume after we are back. */
3179 if (devctl_process_running())
3180 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
3182 return_ACPI_STATUS (status);
3186 acpi_resync_clock(struct acpi_softc *sc)
3190 * Warm up timecounter again and reset system clock.
3192 (void)timecounter->tc_get_timecount(timecounter);
3193 (void)timecounter->tc_get_timecount(timecounter);
3194 inittodr(time_second + sc->acpi_sleep_delay);
3197 /* Enable or disable the device's wake GPE. */
3199 acpi_wake_set_enable(device_t dev, int enable)
3201 struct acpi_prw_data prw;
3205 /* Make sure the device supports waking the system and get the GPE. */
3206 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
3209 flags = acpi_get_flags(dev);
3211 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
3213 if (ACPI_FAILURE(status)) {
3214 device_printf(dev, "enable wake failed\n");
3217 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
3219 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
3221 if (ACPI_FAILURE(status)) {
3222 device_printf(dev, "disable wake failed\n");
3225 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
3232 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
3234 struct acpi_prw_data prw;
3237 /* Check that this is a wake-capable device and get its GPE. */
3238 if (acpi_parse_prw(handle, &prw) != 0)
3240 dev = acpi_get_device(handle);
3243 * The destination sleep state must be less than (i.e., higher power)
3244 * or equal to the value specified by _PRW. If this GPE cannot be
3245 * enabled for the next sleep state, then disable it. If it can and
3246 * the user requested it be enabled, turn on any required power resources
3249 if (sstate > prw.lowest_wake) {
3250 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
3252 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
3253 acpi_name(handle), sstate);
3254 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
3255 acpi_pwr_wake_enable(handle, 1);
3256 acpi_SetInteger(handle, "_PSW", 1);
3258 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
3259 acpi_name(handle), sstate);
3266 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
3268 struct acpi_prw_data prw;
3272 * Check that this is a wake-capable device and get its GPE. Return
3273 * now if the user didn't enable this device for wake.
3275 if (acpi_parse_prw(handle, &prw) != 0)
3277 dev = acpi_get_device(handle);
3278 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
3282 * If this GPE couldn't be enabled for the previous sleep state, it was
3283 * disabled before going to sleep so re-enable it. If it was enabled,
3284 * clear _PSW and turn off any power resources it used.
3286 if (sstate > prw.lowest_wake) {
3287 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
3289 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
3291 acpi_SetInteger(handle, "_PSW", 0);
3292 acpi_pwr_wake_enable(handle, 0);
3294 device_printf(dev, "run_prep cleaned up for %s\n",
3302 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
3306 /* If suspending, run the sleep prep function, otherwise wake. */
3307 sstate = *(int *)context;
3308 if (AcpiGbl_SystemAwakeAndRunning)
3309 acpi_wake_sleep_prep(handle, sstate);
3311 acpi_wake_run_prep(handle, sstate);
3315 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
3317 acpi_wake_prep_walk(int sstate)
3319 ACPI_HANDLE sb_handle;
3321 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
3322 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
3323 acpi_wake_prep, NULL, &sstate, NULL);
3327 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
3329 acpi_wake_sysctl_walk(device_t dev)
3331 int error, i, numdevs;
3336 error = device_get_children(dev, &devlist, &numdevs);
3337 if (error != 0 || numdevs == 0) {
3339 free(devlist, M_TEMP);
3342 for (i = 0; i < numdevs; i++) {
3344 acpi_wake_sysctl_walk(child);
3345 if (!device_is_attached(child))
3347 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
3348 if (ACPI_SUCCESS(status)) {
3349 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
3350 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
3351 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
3352 acpi_wake_set_sysctl, "I", "Device set to wake the system");
3355 free(devlist, M_TEMP);
3360 /* Enable or disable wake from userland. */
3362 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
3367 dev = (device_t)arg1;
3368 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
3370 error = sysctl_handle_int(oidp, &enable, 0, req);
3371 if (error != 0 || req->newptr == NULL)
3373 if (enable != 0 && enable != 1)
3376 return (acpi_wake_set_enable(dev, enable));
3379 /* Parse a device's _PRW into a structure. */
3381 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
3384 ACPI_BUFFER prw_buffer;
3385 ACPI_OBJECT *res, *res2;
3386 int error, i, power_count;
3388 if (h == NULL || prw == NULL)
3392 * The _PRW object (7.2.9) is only required for devices that have the
3393 * ability to wake the system from a sleeping state.
3396 prw_buffer.Pointer = NULL;
3397 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
3398 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
3399 if (ACPI_FAILURE(status))
3401 res = (ACPI_OBJECT *)prw_buffer.Pointer;
3404 if (!ACPI_PKG_VALID(res, 2))
3408 * Element 1 of the _PRW object:
3409 * The lowest power system sleeping state that can be entered while still
3410 * providing wake functionality. The sleeping state being entered must
3411 * be less than (i.e., higher power) or equal to this value.
3413 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
3417 * Element 0 of the _PRW object:
3419 switch (res->Package.Elements[0].Type) {
3420 case ACPI_TYPE_INTEGER:
3422 * If the data type of this package element is numeric, then this
3423 * _PRW package element is the bit index in the GPEx_EN, in the
3424 * GPE blocks described in the FADT, of the enable bit that is
3425 * enabled for the wake event.
3427 prw->gpe_handle = NULL;
3428 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
3431 case ACPI_TYPE_PACKAGE:
3433 * If the data type of this package element is a package, then this
3434 * _PRW package element is itself a package containing two
3435 * elements. The first is an object reference to the GPE Block
3436 * device that contains the GPE that will be triggered by the wake
3437 * event. The second element is numeric and it contains the bit
3438 * index in the GPEx_EN, in the GPE Block referenced by the
3439 * first element in the package, of the enable bit that is enabled for
3442 * For example, if this field is a package then it is of the form:
3443 * Package() {\_SB.PCI0.ISA.GPE, 2}
3445 res2 = &res->Package.Elements[0];
3446 if (!ACPI_PKG_VALID(res2, 2))
3448 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
3449 if (prw->gpe_handle == NULL)
3451 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
3459 /* Elements 2 to N of the _PRW object are power resources. */
3460 power_count = res->Package.Count - 2;
3461 if (power_count > ACPI_PRW_MAX_POWERRES) {
3462 printf("ACPI device %s has too many power resources\n", acpi_name(h));
3465 prw->power_res_count = power_count;
3466 for (i = 0; i < power_count; i++)
3467 prw->power_res[i] = res->Package.Elements[i];
3470 if (prw_buffer.Pointer != NULL)
3471 AcpiOsFree(prw_buffer.Pointer);
3476 * ACPI Event Handlers
3479 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
3482 acpi_system_eventhandler_sleep(void *arg, int state)
3484 struct acpi_softc *sc = (struct acpi_softc *)arg;
3487 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
3489 /* Check if button action is disabled or unknown. */
3490 if (state == ACPI_STATE_UNKNOWN)
3493 /* Request that the system prepare to enter the given suspend state. */
3494 ret = acpi_ReqSleepState(sc, state);
3496 device_printf(sc->acpi_dev,
3497 "request to enter state S%d failed (err %d)\n", state, ret);
3503 acpi_system_eventhandler_wakeup(void *arg, int state)
3506 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
3508 /* Currently, nothing to do for wakeup. */
3514 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
3517 acpi_invoke_sleep_eventhandler(void *context)
3520 EVENTHANDLER_INVOKE(acpi_sleep_event, *(int *)context);
3524 acpi_invoke_wake_eventhandler(void *context)
3527 EVENTHANDLER_INVOKE(acpi_wakeup_event, *(int *)context);
3531 acpi_event_power_button_sleep(void *context)
3533 struct acpi_softc *sc = (struct acpi_softc *)context;
3535 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3537 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3538 acpi_invoke_sleep_eventhandler, &sc->acpi_power_button_sx)))
3539 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3540 return_VALUE (ACPI_INTERRUPT_HANDLED);
3544 acpi_event_power_button_wake(void *context)
3546 struct acpi_softc *sc = (struct acpi_softc *)context;
3548 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3550 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3551 acpi_invoke_wake_eventhandler, &sc->acpi_power_button_sx)))
3552 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3553 return_VALUE (ACPI_INTERRUPT_HANDLED);
3557 acpi_event_sleep_button_sleep(void *context)
3559 struct acpi_softc *sc = (struct acpi_softc *)context;
3561 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3563 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3564 acpi_invoke_sleep_eventhandler, &sc->acpi_sleep_button_sx)))
3565 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3566 return_VALUE (ACPI_INTERRUPT_HANDLED);
3570 acpi_event_sleep_button_wake(void *context)
3572 struct acpi_softc *sc = (struct acpi_softc *)context;
3574 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3576 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3577 acpi_invoke_wake_eventhandler, &sc->acpi_sleep_button_sx)))
3578 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3579 return_VALUE (ACPI_INTERRUPT_HANDLED);
3583 * XXX This static buffer is suboptimal. There is no locking so only
3584 * use this for single-threaded callers.
3587 acpi_name(ACPI_HANDLE handle)
3590 static char data[256];
3592 buf.Length = sizeof(data);
3595 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
3597 return ("(unknown)");
3601 * Debugging/bug-avoidance. Avoid trying to fetch info on various
3602 * parts of the namespace.
3605 acpi_avoid(ACPI_HANDLE handle)
3607 char *cp, *env, *np;
3610 np = acpi_name(handle);
3613 if ((env = kern_getenv("debug.acpi.avoid")) == NULL)
3616 /* Scan the avoid list checking for a match */
3619 while (*cp != 0 && isspace(*cp))
3624 while (cp[len] != 0 && !isspace(cp[len]))
3626 if (!strncmp(cp, np, len)) {
3638 * Debugging/bug-avoidance. Disable ACPI subsystem components.
3641 acpi_disabled(char *subsys)
3646 if ((env = kern_getenv("debug.acpi.disabled")) == NULL)
3648 if (strcmp(env, "all") == 0) {
3653 /* Scan the disable list, checking for a match. */
3656 while (*cp != '\0' && isspace(*cp))
3661 while (cp[len] != '\0' && !isspace(cp[len]))
3663 if (strncmp(cp, subsys, len) == 0) {
3675 acpi_lookup(void *arg, const char *name, device_t *dev)
3683 * Allow any handle name that is specified as an absolute path and
3684 * starts with '\'. We could restrict this to \_SB and friends,
3685 * but see acpi_probe_children() for notes on why we scan the entire
3686 * namespace for devices.
3688 * XXX: The pathname argument to AcpiGetHandle() should be fixed to
3691 if (name[0] != '\\')
3693 if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, __DECONST(char *, name),
3696 *dev = acpi_get_device(handle);
3700 * Control interface.
3702 * We multiplex ioctls for all participating ACPI devices here. Individual
3703 * drivers wanting to be accessible via /dev/acpi should use the
3704 * register/deregister interface to make their handlers visible.
3706 struct acpi_ioctl_hook
3708 TAILQ_ENTRY(acpi_ioctl_hook) link;
3714 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
3715 static int acpi_ioctl_hooks_initted;
3718 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
3720 struct acpi_ioctl_hook *hp;
3722 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
3729 if (acpi_ioctl_hooks_initted == 0) {
3730 TAILQ_INIT(&acpi_ioctl_hooks);
3731 acpi_ioctl_hooks_initted = 1;
3733 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
3740 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
3742 struct acpi_ioctl_hook *hp;
3745 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
3746 if (hp->cmd == cmd && hp->fn == fn)
3750 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
3751 free(hp, M_ACPIDEV);
3757 acpiopen(struct cdev *dev, int flag, int fmt, struct thread *td)
3763 acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td)
3769 acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
3771 struct acpi_softc *sc;
3772 struct acpi_ioctl_hook *hp;
3780 * Scan the list of registered ioctls, looking for handlers.
3783 if (acpi_ioctl_hooks_initted)
3784 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3790 return (hp->fn(cmd, addr, hp->arg));
3793 * Core ioctls are not permitted for non-writable user.
3794 * Currently, other ioctls just fetch information.
3795 * Not changing system behavior.
3797 if ((flag & FWRITE) == 0)
3800 /* Core system ioctls. */
3802 case ACPIIO_REQSLPSTATE:
3803 state = *(int *)addr;
3804 if (state != ACPI_STATE_S5)
3805 return (acpi_ReqSleepState(sc, state));
3806 device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n");
3809 case ACPIIO_ACKSLPSTATE:
3810 error = *(int *)addr;
3811 error = acpi_AckSleepState(sc->acpi_clone, error);
3813 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3814 state = *(int *)addr;
3815 if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX)
3817 if (!acpi_sleep_states[state])
3818 return (EOPNOTSUPP);
3819 if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
3831 acpi_sname2sstate(const char *sname)
3835 if (toupper(sname[0]) == 'S') {
3836 sstate = sname[1] - '0';
3837 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 &&
3840 } else if (strcasecmp(sname, "NONE") == 0)
3841 return (ACPI_STATE_UNKNOWN);
3846 acpi_sstate2sname(int sstate)
3848 static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" };
3850 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5)
3851 return (snames[sstate]);
3852 else if (sstate == ACPI_STATE_UNKNOWN)
3858 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3864 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3865 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
3866 if (acpi_sleep_states[state])
3867 sbuf_printf(&sb, "%s ", acpi_sstate2sname(state));
3870 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3876 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3878 char sleep_state[10];
3879 int error, new_state, old_state;
3881 old_state = *(int *)oidp->oid_arg1;
3882 strlcpy(sleep_state, acpi_sstate2sname(old_state), sizeof(sleep_state));
3883 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3884 if (error == 0 && req->newptr != NULL) {
3885 new_state = acpi_sname2sstate(sleep_state);
3886 if (new_state < ACPI_STATE_S1)
3888 if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state])
3889 return (EOPNOTSUPP);
3890 if (new_state != old_state)
3891 *(int *)oidp->oid_arg1 = new_state;
3896 /* Inform devctl(4) when we receive a Notify. */
3898 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3900 char notify_buf[16];
3901 ACPI_BUFFER handle_buf;
3904 if (subsystem == NULL)
3907 handle_buf.Pointer = NULL;
3908 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3909 status = AcpiNsHandleToPathname(h, &handle_buf, FALSE);
3910 if (ACPI_FAILURE(status))
3912 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
3913 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
3914 AcpiOsFree(handle_buf.Pointer);
3919 * Support for parsing debug options from the kernel environment.
3921 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3922 * by specifying the names of the bits in the debug.acpi.layer and
3923 * debug.acpi.level environment variables. Bits may be unset by
3924 * prefixing the bit name with !.
3932 static struct debugtag dbg_layer[] = {
3933 {"ACPI_UTILITIES", ACPI_UTILITIES},
3934 {"ACPI_HARDWARE", ACPI_HARDWARE},
3935 {"ACPI_EVENTS", ACPI_EVENTS},
3936 {"ACPI_TABLES", ACPI_TABLES},
3937 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3938 {"ACPI_PARSER", ACPI_PARSER},
3939 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3940 {"ACPI_EXECUTER", ACPI_EXECUTER},
3941 {"ACPI_RESOURCES", ACPI_RESOURCES},
3942 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3943 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3944 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3945 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3947 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3948 {"ACPI_BATTERY", ACPI_BATTERY},
3949 {"ACPI_BUS", ACPI_BUS},
3950 {"ACPI_BUTTON", ACPI_BUTTON},
3951 {"ACPI_EC", ACPI_EC},
3952 {"ACPI_FAN", ACPI_FAN},
3953 {"ACPI_POWERRES", ACPI_POWERRES},
3954 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3955 {"ACPI_THERMAL", ACPI_THERMAL},
3956 {"ACPI_TIMER", ACPI_TIMER},
3957 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3961 static struct debugtag dbg_level[] = {
3962 {"ACPI_LV_INIT", ACPI_LV_INIT},
3963 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3964 {"ACPI_LV_INFO", ACPI_LV_INFO},
3965 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR},
3966 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3968 /* Trace verbosity level 1 [Standard Trace Level] */
3969 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3970 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3971 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3972 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3973 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3974 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3975 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3976 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3977 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3978 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3979 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3980 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3981 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3982 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3983 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3985 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3986 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3987 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3988 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3989 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3990 {"ACPI_LV_ALL", ACPI_LV_ALL},
3992 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3993 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3994 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3995 {"ACPI_LV_IO", ACPI_LV_IO},
3996 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3997 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3999 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
4000 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
4001 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
4002 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
4003 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
4004 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
4009 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
4021 while (*ep && !isspace(*ep))
4032 for (i = 0; tag[i].name != NULL; i++) {
4033 if (!strncmp(cp, tag[i].name, l)) {
4035 *flag |= tag[i].value;
4037 *flag &= ~tag[i].value;
4045 acpi_set_debugging(void *junk)
4047 char *layer, *level;
4054 layer = kern_getenv("debug.acpi.layer");
4055 level = kern_getenv("debug.acpi.level");
4056 if (layer == NULL && level == NULL)
4059 printf("ACPI set debug");
4060 if (layer != NULL) {
4061 if (strcmp("NONE", layer) != 0)
4062 printf(" layer '%s'", layer);
4063 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
4066 if (level != NULL) {
4067 if (strcmp("NONE", level) != 0)
4068 printf(" level '%s'", level);
4069 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
4075 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
4079 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
4082 struct debugtag *tag;
4086 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
4088 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
4089 tag = &dbg_layer[0];
4090 dbg = &AcpiDbgLayer;
4092 tag = &dbg_level[0];
4093 dbg = &AcpiDbgLevel;
4096 /* Get old values if this is a get request. */
4097 ACPI_SERIAL_BEGIN(acpi);
4099 sbuf_cpy(&sb, "NONE");
4100 } else if (req->newptr == NULL) {
4101 for (; tag->name != NULL; tag++) {
4102 if ((*dbg & tag->value) == tag->value)
4103 sbuf_printf(&sb, "%s ", tag->name);
4108 strlcpy(temp, sbuf_data(&sb), sizeof(temp));
4111 error = sysctl_handle_string(oidp, temp, sizeof(temp), req);
4113 /* Check for error or no change */
4114 if (error == 0 && req->newptr != NULL) {
4116 kern_setenv((char *)oidp->oid_arg1, temp);
4117 acpi_set_debugging(NULL);
4119 ACPI_SERIAL_END(acpi);
4124 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
4125 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
4126 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
4127 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
4128 #endif /* ACPI_DEBUG */
4131 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS)
4136 old = acpi_debug_objects;
4137 error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req);
4138 if (error != 0 || req->newptr == NULL)
4140 if (old == acpi_debug_objects || (old && acpi_debug_objects))
4143 ACPI_SERIAL_BEGIN(acpi);
4144 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
4145 ACPI_SERIAL_END(acpi);
4151 acpi_parse_interfaces(char *str, struct acpi_interface *iface)
4158 while (isspace(*p) || *p == ',')
4163 p = strdup(p, M_TEMP);
4164 for (i = 0; i < len; i++)
4169 if (isspace(p[i]) || p[i] == '\0')
4172 i += strlen(p + i) + 1;
4179 iface->data = malloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK);
4183 if (isspace(p[i]) || p[i] == '\0')
4186 iface->data[j] = p + i;
4187 i += strlen(p + i) + 1;
4195 acpi_free_interfaces(struct acpi_interface *iface)
4198 free(iface->data[0], M_TEMP);
4199 free(iface->data, M_TEMP);
4203 acpi_reset_interfaces(device_t dev)
4205 struct acpi_interface list;
4209 if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) {
4210 for (i = 0; i < list.num; i++) {
4211 status = AcpiInstallInterface(list.data[i]);
4212 if (ACPI_FAILURE(status))
4214 "failed to install _OSI(\"%s\"): %s\n",
4215 list.data[i], AcpiFormatException(status));
4216 else if (bootverbose)
4217 device_printf(dev, "installed _OSI(\"%s\")\n",
4220 acpi_free_interfaces(&list);
4222 if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) {
4223 for (i = 0; i < list.num; i++) {
4224 status = AcpiRemoveInterface(list.data[i]);
4225 if (ACPI_FAILURE(status))
4227 "failed to remove _OSI(\"%s\"): %s\n",
4228 list.data[i], AcpiFormatException(status));
4229 else if (bootverbose)
4230 device_printf(dev, "removed _OSI(\"%s\")\n",
4233 acpi_free_interfaces(&list);
4238 acpi_pm_func(u_long cmd, void *arg, ...)
4240 int state, acpi_state;
4242 struct acpi_softc *sc;
4247 case POWER_CMD_SUSPEND:
4248 sc = (struct acpi_softc *)arg;
4255 state = va_arg(ap, int);
4259 case POWER_SLEEP_STATE_STANDBY:
4260 acpi_state = sc->acpi_standby_sx;
4262 case POWER_SLEEP_STATE_SUSPEND:
4263 acpi_state = sc->acpi_suspend_sx;
4265 case POWER_SLEEP_STATE_HIBERNATE:
4266 acpi_state = ACPI_STATE_S4;
4273 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
4286 acpi_pm_register(void *arg)
4288 if (!cold || resource_disabled("acpi", 0))
4291 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
4294 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, NULL);