2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.kfreebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.kfreebsd.org>
4 * Copyright (c) 2000, 2001 Michael Smith
5 * Copyright (c) 2000 BSDi
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/sys/dev/acpica/acpi.c,v 1.243.2.4.4.1 2009/04/15 03:14:26 kensmith Exp $
33 #include <sys/param.h>
34 #include <sys/kernel.h>
36 #include <sys/fcntl.h>
37 #include <sys/malloc.h>
38 #include <sys/module.h>
41 #include <sys/reboot.h>
42 #include <sys/sysctl.h>
43 #include <sys/ctype.h>
44 #include <sys/linker.h>
45 #include <sys/power.h>
47 #include <sys/device.h>
48 #include <sys/spinlock.h>
49 #include <sys/spinlock2.h>
53 #include <bus/isa/isavar.h>
54 #include <bus/isa/pnpvar.h>
57 #include <dev/acpica/acpivar.h>
58 #include <dev/acpica/acpiio.h>
59 #include <dev/acpica/acpiio_mcall.h>
65 #include <bus/pci/pci_cfgreg.h>
66 #include <bus/pci/pcivar.h>
67 #include <bus/pci/pci_private.h>
69 #include <vm/vm_param.h>
71 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
73 /* Hooks for the ACPICA debugging infrastructure */
74 #define _COMPONENT ACPI_BUS
75 ACPI_MODULE_NAME("ACPI");
77 static d_open_t acpiopen;
78 static d_close_t acpiclose;
79 static d_ioctl_t acpiioctl;
81 static struct dev_ops acpi_ops = {
88 struct acpi_interface {
93 /* Global mutex for locking access to the ACPI subsystem. */
94 struct lock acpi_lock;
96 /* Bitmap of device quirks. */
99 static int acpi_modevent(struct module *mod, int event, void *junk);
100 static void acpi_identify(driver_t *driver, device_t parent);
101 static int acpi_probe(device_t dev);
102 static int acpi_attach(device_t dev);
103 static int acpi_suspend(device_t dev);
104 static int acpi_resume(device_t dev);
105 static int acpi_shutdown(device_t dev);
106 static device_t acpi_add_child(device_t bus, device_t parent, int order, const char *name,
108 static int acpi_print_child(device_t bus, device_t child);
109 static void acpi_probe_nomatch(device_t bus, device_t child);
110 static void acpi_driver_added(device_t dev, driver_t *driver);
111 static int acpi_read_ivar(device_t dev, device_t child, int index,
113 static int acpi_write_ivar(device_t dev, device_t child, int index,
115 static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
116 static int acpi_sysres_alloc(device_t dev);
117 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
118 int type, int *rid, u_long start, u_long end,
119 u_long count, u_int flags, int cpuid);
120 static int acpi_release_resource(device_t bus, device_t child, int type,
121 int rid, struct resource *r);
122 static void acpi_delete_resource(device_t bus, device_t child, int type,
124 static uint32_t acpi_isa_get_logicalid(device_t dev);
125 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
126 static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
127 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
128 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
130 static int acpi_device_pwr_for_sleep(device_t bus, device_t dev,
132 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
133 void *context, void **retval);
134 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
135 int max_depth, acpi_scan_cb_t user_fn, void *arg);
136 static int acpi_set_powerstate_method(device_t bus, device_t child,
138 static int acpi_isa_pnp_probe(device_t bus, device_t child,
139 struct isa_pnp_id *ids);
140 static void acpi_probe_children(device_t bus);
141 static void acpi_probe_order(ACPI_HANDLE handle, int *order);
142 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
143 void *context, void **status);
144 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
145 static void acpi_shutdown_final(void *arg, int howto);
146 static void acpi_enable_fixed_events(struct acpi_softc *sc);
147 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
148 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
149 static int acpi_wake_prep_walk(int sstate);
150 static int acpi_wake_sysctl_walk(device_t dev);
152 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
154 static void acpi_system_eventhandler_sleep(void *arg, int state);
155 static void acpi_system_eventhandler_wakeup(void *arg, int state);
156 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
157 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
158 static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS);
159 static int acpi_pm_func(u_long cmd, void *arg, ...);
160 static int acpi_child_location_str_method(device_t acdev, device_t child,
161 char *buf, size_t buflen);
162 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
163 char *buf, size_t buflen);
164 static void acpi_enable_pcie(void);
165 static void acpi_reset_interfaces(device_t dev);
167 static device_method_t acpi_methods[] = {
168 /* Device interface */
169 DEVMETHOD(device_identify, acpi_identify),
170 DEVMETHOD(device_probe, acpi_probe),
171 DEVMETHOD(device_attach, acpi_attach),
172 DEVMETHOD(device_shutdown, acpi_shutdown),
173 DEVMETHOD(device_detach, bus_generic_detach),
174 DEVMETHOD(device_suspend, acpi_suspend),
175 DEVMETHOD(device_resume, acpi_resume),
178 DEVMETHOD(bus_add_child, acpi_add_child),
179 DEVMETHOD(bus_print_child, acpi_print_child),
180 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
181 DEVMETHOD(bus_driver_added, acpi_driver_added),
182 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
183 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
184 DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
185 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
186 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
187 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
188 DEVMETHOD(bus_release_resource, acpi_release_resource),
189 DEVMETHOD(bus_delete_resource, acpi_delete_resource),
190 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
191 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
192 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
193 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
194 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
195 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
198 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
199 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
200 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
201 DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
204 DEVMETHOD(pci_set_powerstate, acpi_set_powerstate_method),
207 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
212 static driver_t acpi_driver = {
215 sizeof(struct acpi_softc),
218 static devclass_t acpi_devclass;
219 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, NULL);
220 MODULE_VERSION(acpi, 1);
222 ACPI_SERIAL_DECL(acpi, "ACPI serializer");
224 /* Local pools for managing system resources for ACPI child devices. */
225 static struct rman acpi_rman_io, acpi_rman_mem;
227 #define ACPI_MINIMUM_AWAKETIME 5
229 static const char* sleep_state_names[] = {
230 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
232 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
233 static char acpi_ca_version[12];
234 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
235 acpi_ca_version, 0, "Version of Intel ACPICA");
238 * Allow overriding _OSI methods.
240 static char acpi_install_interface[256];
241 TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface,
242 sizeof(acpi_install_interface));
243 static char acpi_remove_interface[256];
244 TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface,
245 sizeof(acpi_remove_interface));
248 * Use this tunable to disable the control method auto-serialization
249 * mechanism that was added in 20140214 and superseded the previous
250 * AcpiGbl_SerializeAllMethods global.
252 static int acpi_auto_serialize_methods = 1;
253 TUNABLE_INT("hw.acpi.auto_serialize_methods", &acpi_auto_serialize_methods);
255 /* Allow users to dump Debug objects without ACPI debugger. */
256 static int acpi_debug_objects;
257 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects);
258 SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects,
259 CTLFLAG_RW | CTLTYPE_INT, NULL, 0, acpi_debug_objects_sysctl, "I",
260 "Enable Debug objects.");
262 /* Allow ignoring the XSDT. */
263 static int acpi_ignore_xsdt;
264 TUNABLE_INT("debug.acpi.ignore_xsdt", &acpi_ignore_xsdt);
265 SYSCTL_INT(_debug_acpi, OID_AUTO, ignore_xsdt, CTLFLAG_RD,
266 &acpi_ignore_xsdt, 1, "Ignore the XSDT, forcing the use of the RSDT.");
268 /* Allow the interpreter to ignore common mistakes in BIOS. */
269 static int acpi_interpreter_slack = 1;
270 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack);
271 SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RD,
272 &acpi_interpreter_slack, 1, "Turn on interpreter slack mode.");
274 /* Allow preferring 32-bit FADT register addresses over the 64-bit ones. */
275 static int acpi_fadt_addr32;
276 TUNABLE_INT("debug.acpi.fadt_addr32", &acpi_fadt_addr32);
277 SYSCTL_INT(_debug_acpi, OID_AUTO, fadt_addr32, CTLFLAG_RD,
278 &acpi_fadt_addr32, 1,
279 "Prefer 32-bit FADT register addresses over 64-bit ones.");
281 /* Prefer 32-bit FACS table addresses over the 64-bit ones. */
282 static int acpi_facs_addr32 = 1;
283 TUNABLE_INT("debug.acpi.facs_addr32", &acpi_facs_addr32);
284 SYSCTL_INT(_debug_acpi, OID_AUTO, facs_addr32, CTLFLAG_RD,
285 &acpi_facs_addr32, 1,
286 "Prefer 32-bit FACS table addresses over 64-bit ones.");
288 /* Power devices off and on in suspend and resume. XXX Remove once tested. */
289 static int acpi_do_powerstate = 1;
290 TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate);
291 SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW,
292 &acpi_do_powerstate, 1, "Turn off devices when suspending.");
294 /* Allow users to override quirks. */
295 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
297 /* Allow to call ACPI methods from userland. */
298 static int acpi_allow_mcall;
299 TUNABLE_INT("debug.acpi.allow_method_calls", &acpi_allow_mcall);
301 static int acpi_susp_bounce;
302 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
303 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
306 * ACPI can only be loaded as a module by the loader; activating it after
307 * system bootstrap time is not useful, and can be fatal to the system.
308 * It also cannot be unloaded, since the entire system bus heirarchy hangs
312 acpi_modevent(struct module *mod, int event, void *junk)
317 kprintf("The ACPI driver cannot be loaded after boot.\n");
322 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
332 * Perform early initialization.
337 static int started = 0;
341 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
343 /* Only run the startup code once. The MADT driver also calls this. */
345 return_VALUE (AE_OK);
349 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
350 * if more tables exist.
352 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
353 kprintf("ACPI: Table initialisation failed: %s\n",
354 AcpiFormatException(status));
355 return_VALUE (status);
358 /* Set up any quirks we have for this system. */
359 if (acpi_quirks == ACPI_Q_OK)
360 acpi_table_quirks(&acpi_quirks);
362 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
363 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
364 acpi_quirks &= ~ACPI_Q_BROKEN;
365 if (acpi_quirks & ACPI_Q_BROKEN) {
366 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
370 return_VALUE (status);
374 * Detect ACPI, perform early initialisation
377 acpi_identify(driver_t *driver, device_t parent)
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 /* Make sure we're not being doubly invoked. */
391 if (device_find_child(parent, "acpi", 0) != NULL)
394 ksnprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
396 /* Initialize root tables. */
397 if (ACPI_FAILURE(acpi_Startup())) {
398 kprintf("ACPI: Try disabling either ACPI or apic support.\n");
402 /* Attach the actual ACPI device. */
403 if ((child = BUS_ADD_CHILD(parent, parent, 10, "acpi", 0)) == NULL) {
404 device_printf(parent, "device_identify failed\n");
410 * Fetch some descriptive data from ACPI to put in our attach message.
413 acpi_probe(device_t dev)
415 ACPI_TABLE_RSDP *rsdp;
416 ACPI_TABLE_HEADER *rsdt;
417 ACPI_PHYSICAL_ADDRESS paddr;
418 char buf[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
421 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
423 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
424 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
425 device_printf(dev, "probe failed, other PM system enabled.\n");
426 return_VALUE (ENXIO);
429 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
430 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
431 return_VALUE (ENXIO);
432 if (acpi_ignore_xsdt == 0 &&
433 rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
434 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
436 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
437 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
439 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
440 return_VALUE (ENXIO);
441 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
442 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
445 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
448 device_set_desc_copy(dev, sbuf_data(&sb));
450 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
456 acpi_attach(device_t dev)
458 struct acpi_softc *sc;
465 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
467 sc = device_get_softc(dev);
469 callout_init(&sc->susp_force_to);
471 if ((error = acpi_task_thread_init())) {
472 device_printf(dev, "Could not start task thread.\n");
478 /* Initialize resource manager. */
479 acpi_rman_io.rm_type = RMAN_ARRAY;
480 acpi_rman_io.rm_start = 0;
481 acpi_rman_io.rm_end = 0xffff;
482 acpi_rman_io.rm_descr = "ACPI I/O ports";
483 if (rman_init(&acpi_rman_io, -1) != 0)
484 panic("acpi rman_init IO ports failed");
485 acpi_rman_mem.rm_type = RMAN_ARRAY;
486 acpi_rman_mem.rm_start = 0;
487 acpi_rman_mem.rm_end = ~0ul;
488 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
489 if (rman_init(&acpi_rman_mem, -1) != 0)
490 panic("acpi rman_init memory failed");
492 /* Initialise the ACPI mutex */
493 ACPI_LOCK_INIT(acpi, "acpi");
494 ACPI_SERIAL_INIT(acpi);
497 * Set the globals from our tunables. This is needed because ACPICA
498 * uses UINT8 for some values and we have no tunable_byte.
500 AcpiGbl_AutoSerializeMethods = acpi_auto_serialize_methods ? TRUE : FALSE;
501 AcpiGbl_DoNotUseXsdt = acpi_ignore_xsdt ? TRUE : FALSE;
502 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
503 AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE;
504 AcpiGbl_Use32BitFadtAddresses = acpi_fadt_addr32 ? TRUE : FALSE;
505 AcpiGbl_Use32BitFacsAddresses = acpi_facs_addr32 ? TRUE : FALSE;
509 * Disable Debug Object output.
511 AcpiDbgLevel &= ~ACPI_LV_DEBUG_OBJECT;
514 /* Start up the ACPICA subsystem. */
515 status = AcpiInitializeSubsystem();
516 if (ACPI_FAILURE(status)) {
517 device_printf(dev, "Could not initialize Subsystem: %s\n",
518 AcpiFormatException(status));
522 /* Override OS interfaces if the user requested. */
523 acpi_reset_interfaces(dev);
525 /* Load ACPI name space. */
526 status = AcpiLoadTables();
527 if (ACPI_FAILURE(status)) {
528 device_printf(dev, "Could not load Namespace: %s\n",
529 AcpiFormatException(status));
533 /* Handle MCFG table if present. */
537 * Note that some systems (specifically, those with namespace evaluation
538 * issues that require the avoidance of parts of the namespace) must
539 * avoid running _INI and _STA on everything, as well as dodging the final
542 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
544 * XXX We should arrange for the object init pass after we have attached
545 * all our child devices, but on many systems it works here.
547 flags = ACPI_FULL_INITIALIZATION;
548 if (ktestenv("debug.acpi.avoid"))
549 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
551 /* Bring the hardware and basic handlers online. */
552 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
553 device_printf(dev, "Could not enable ACPI: %s\n",
554 AcpiFormatException(status));
559 * Fix up the interrupt timer after enabling ACPI, so that the
560 * interrupt cputimer that choked by ACPI power management could
561 * be resurrected before probing various devices.
564 cputimer_intr_pmfixup();
567 * Call the ECDT probe function to provide EC functionality before
568 * the namespace has been evaluated.
570 * XXX This happens before the sysresource devices have been probed and
571 * attached so its resources come from nexus0. In practice, this isn't
572 * a problem but should be addressed eventually.
574 acpi_ec_ecdt_probe(dev);
576 /* Bring device objects and regions online. */
577 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
578 device_printf(dev, "Could not initialize ACPI objects: %s\n",
579 AcpiFormatException(status));
584 * Setup our sysctl tree.
586 * XXX: This doesn't check to make sure that none of these fail.
588 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
589 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
590 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
591 device_get_name(dev), CTLFLAG_RD, 0, "");
592 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
593 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
594 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
595 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
596 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
597 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
598 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
599 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
600 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
601 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
602 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
603 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
604 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
605 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
606 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
607 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
608 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
609 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
610 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
611 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
613 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
614 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
615 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
616 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
617 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
618 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
619 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
620 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
621 OID_AUTO, "handle_reboot", CTLFLAG_RW,
622 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
625 * Default to 1 second before sleeping to give some machines time to
628 sc->acpi_sleep_delay = 1;
630 sc->acpi_verbose = 1;
631 if ((env = kgetenv("hw.acpi.verbose")) != NULL) {
632 if (strcmp(env, "0") != 0)
633 sc->acpi_verbose = 1;
637 /* Only enable reboot by default if the FADT says it is available. */
638 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER)
639 sc->acpi_handle_reboot = 1;
641 /* Only enable S4BIOS by default if the FACS says it is available. */
642 if (AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
646 * Dispatch the default sleep state to devices. The lid switch is set
647 * to NONE by default to avoid surprising users.
649 sc->acpi_power_button_sx = ACPI_STATE_S5;
650 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
651 sc->acpi_standby_sx = ACPI_STATE_S1;
652 sc->acpi_suspend_sx = ACPI_STATE_S3;
654 /* Pick the first valid sleep state for the sleep button default. */
655 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
656 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
657 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
658 sc->acpi_sleep_button_sx = state;
662 acpi_enable_fixed_events(sc);
665 * Scan the namespace and attach/initialise children.
668 /* Register our shutdown handler. */
669 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
673 * Register our acpi event handlers.
674 * XXX should be configurable eg. via userland policy manager.
676 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
677 sc, ACPI_EVENT_PRI_LAST);
678 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
679 sc, ACPI_EVENT_PRI_LAST);
681 /* Flag our initial states. */
682 sc->acpi_enabled = 1;
683 sc->acpi_sstate = ACPI_STATE_S0;
684 sc->acpi_sleep_disabled = 0;
685 /* Create the control device */
686 sc->acpi_dev_t = make_dev(&acpi_ops, 0, UID_ROOT, GID_WHEEL, 0644,
688 sc->acpi_dev_t->si_drv1 = sc;
690 if ((error = acpi_machdep_init(dev)))
693 /* Register ACPI again to pass the correct argument of pm_func. */
694 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
696 if (!acpi_disabled("bus"))
697 acpi_probe_children(dev);
699 /* Update all GPEs and enable runtime GPEs. */
700 status = AcpiUpdateAllGpes();
701 if (ACPI_FAILURE(status)) {
702 device_printf(dev, "Could not update all GPEs: %s\n",
703 AcpiFormatException(status));
706 /* Allow sleep request after a while. */
707 /* timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME); */
712 cputimer_intr_pmfixup();
713 acpi_task_thread_schedule();
714 return_VALUE (error);
718 acpi_suspend(device_t dev)
720 device_t child, *devlist;
721 int error, i, numdevs, pstate;
723 /* First give child devices a chance to suspend. */
724 error = bus_generic_suspend(dev);
729 * Now, set them into the appropriate power state, usually D3. If the
730 * device has an _SxD method for the next sleep state, use that power
733 device_get_children(dev, &devlist, &numdevs);
734 for (i = 0; i < numdevs; i++) {
735 /* If the device is not attached, we've powered it down elsewhere. */
737 if (!device_is_attached(child))
741 * Default to D3 for all sleep states. The _SxD method is optional
742 * so set the powerstate even if it's absent.
744 pstate = PCI_POWERSTATE_D3;
745 error = acpi_device_pwr_for_sleep(device_get_parent(child),
747 if ((error == 0 || error == ESRCH) && acpi_do_powerstate)
748 pci_set_powerstate(child, pstate);
750 kfree(devlist, M_TEMP);
757 acpi_resume(device_t dev)
761 device_t child, *devlist;
764 * Put all devices in D0 before resuming them. Call _S0D on each one
765 * since some systems expect this.
767 device_get_children(dev, &devlist, &numdevs);
768 for (i = 0; i < numdevs; i++) {
770 handle = acpi_get_handle(child);
772 AcpiEvaluateObject(handle, "_S0D", NULL, NULL);
773 if (device_is_attached(child) && acpi_do_powerstate)
774 pci_set_powerstate(child, PCI_POWERSTATE_D0);
776 kfree(devlist, M_TEMP);
778 return (bus_generic_resume(dev));
782 acpi_shutdown(device_t dev)
784 /* Allow children to shutdown first. */
785 bus_generic_shutdown(dev);
788 * Enable any GPEs that are able to power-on the system (i.e., RTC).
789 * Also, disable any that are not valid for this state (most).
791 acpi_wake_prep_walk(ACPI_STATE_S5);
797 * Handle a new device being added
800 acpi_add_child(device_t bus, device_t parent, int order, const char *name, int unit)
802 struct acpi_device *ad;
805 if ((ad = kmalloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
808 resource_list_init(&ad->ad_rl);
809 child = device_add_child_ordered(parent, order, name, unit);
811 device_set_ivars(child, ad);
813 kfree(ad, M_ACPIDEV);
818 acpi_print_child(device_t bus, device_t child)
820 struct acpi_device *adev = device_get_ivars(child);
821 struct resource_list *rl = &adev->ad_rl;
824 retval += bus_print_child_header(bus, child);
825 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
826 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
827 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
828 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
829 if (device_get_flags(child))
830 retval += kprintf(" flags %#x", device_get_flags(child));
831 retval += bus_print_child_footer(bus, child);
837 * If this device is an ACPI child but no one claimed it, attempt
838 * to power it off. We'll power it back up when a driver is added.
840 * XXX Disabled for now since many necessary devices (like fdc and
841 * ATA) don't claim the devices we created for them but still expect
842 * them to be powered up.
845 acpi_probe_nomatch(device_t bus, device_t child)
848 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
852 * If a new driver has a chance to probe a child, first power it up.
854 * XXX Disabled for now (see acpi_probe_nomatch for details).
857 acpi_driver_added(device_t dev, driver_t *driver)
859 device_t child, *devlist;
862 DEVICE_IDENTIFY(driver, dev);
863 device_get_children(dev, &devlist, &numdevs);
864 for (i = 0; i < numdevs; i++) {
866 if (device_get_state(child) == DS_NOTPRESENT) {
867 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
868 if (device_probe_and_attach(child) != 0)
869 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
872 kfree(devlist, M_TEMP);
875 /* Location hint for devctl(8) */
877 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
880 struct acpi_device *dinfo = device_get_ivars(child);
882 if (dinfo->ad_handle)
883 ksnprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
885 ksnprintf(buf, buflen, "unknown");
889 /* PnP information for devctl(8) */
891 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
894 ACPI_DEVICE_INFO *adinfo;
895 struct acpi_device *dinfo = device_get_ivars(child);
898 if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo))) {
899 ksnprintf(buf, buflen, "unknown");
901 ksnprintf(buf, buflen, "_HID=%s _UID=%lu",
902 (adinfo->Valid & ACPI_VALID_HID) ?
903 adinfo->HardwareId.String : "none",
904 (adinfo->Valid & ACPI_VALID_UID) ?
905 strtoul(adinfo->UniqueId.String, &end, 10) : 0);
913 * Handle per-device ivars
916 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
918 struct acpi_device *ad;
920 if ((ad = device_get_ivars(child)) == NULL) {
921 device_printf(child, "device has no ivars\n");
925 /* ACPI and ISA compatibility ivars */
927 case ACPI_IVAR_HANDLE:
928 *(ACPI_HANDLE *)result = ad->ad_handle;
930 case ACPI_IVAR_MAGIC:
931 *result = ad->ad_magic;
933 case ACPI_IVAR_PRIVATE:
934 *(void **)result = ad->ad_private;
936 case ACPI_IVAR_FLAGS:
937 *(int *)result = ad->ad_flags;
939 case ISA_IVAR_VENDORID:
940 case ISA_IVAR_SERIAL:
941 case ISA_IVAR_COMPATID:
944 case ISA_IVAR_LOGICALID:
945 *(int *)result = acpi_isa_get_logicalid(child);
955 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
957 struct acpi_device *ad;
959 if ((ad = device_get_ivars(child)) == NULL) {
960 device_printf(child, "device has no ivars\n");
965 case ACPI_IVAR_HANDLE:
966 ad->ad_handle = (ACPI_HANDLE)value;
968 case ACPI_IVAR_MAGIC:
969 ad->ad_magic = value;
971 case ACPI_IVAR_PRIVATE:
972 ad->ad_private = (void *)value;
974 case ACPI_IVAR_FLAGS:
975 ad->ad_flags = (int)value;
978 panic("bad ivar write request (%d)", index);
986 * Handle child resource allocation/removal
988 static struct resource_list *
989 acpi_get_rlist(device_t dev, device_t child)
991 struct acpi_device *ad;
993 ad = device_get_ivars(child);
998 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
999 * duplicates, we merge any in the sysresource attach routine.
1002 acpi_sysres_alloc(device_t dev)
1004 struct resource *res;
1005 struct resource_list *rl;
1006 struct resource_list_entry *rle;
1008 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1012 * Probe/attach any sysresource devices. This would be unnecessary if we
1013 * had multi-pass probe/attach.
1015 if (device_get_children(dev, &children, &child_count) != 0)
1017 for (i = 0; i < child_count; i++) {
1018 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1019 device_probe_and_attach(children[i]);
1021 kfree(children, M_TEMP);
1023 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
1026 SLIST_FOREACH(rle, rl, link) {
1027 if (rle->res != NULL) {
1028 device_printf(dev, "duplicate resource for %lx\n", rle->start);
1032 /* Only memory and IO resources are valid here. */
1033 switch (rle->type) {
1034 case SYS_RES_IOPORT:
1037 case SYS_RES_MEMORY:
1038 rm = &acpi_rman_mem;
1044 /* Pre-allocate resource and add to our rman pool. */
1045 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1046 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count,
1049 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1052 device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1053 rle->start, rle->count, rle->type);
1058 static struct resource *
1059 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
1060 u_long start, u_long end, u_long count, u_int flags, int cpuid)
1063 struct acpi_device *ad = device_get_ivars(child);
1064 struct resource_list *rl = &ad->ad_rl;
1065 struct resource_list_entry *rle;
1066 struct resource *res;
1071 /* We only handle memory and IO resources through rman. */
1073 case SYS_RES_IOPORT:
1076 case SYS_RES_MEMORY:
1077 rm = &acpi_rman_mem;
1083 ACPI_SERIAL_BEGIN(acpi);
1086 * If this is an allocation of the "default" range for a given RID, and
1087 * we know what the resources for this device are (i.e., they're on the
1088 * child's resource list), use those start/end values.
1090 if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) {
1091 rle = resource_list_find(rl, type, *rid);
1101 * If this is an allocation of a specific range, see if we can satisfy
1102 * the request from our system resource regions. If we can't, pass the
1103 * request up to the parent.
1105 if (start + count - 1 == end && rm != NULL)
1106 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1109 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1110 start, end, count, flags, cpuid);
1112 rman_set_rid(res, *rid);
1114 /* If requested, activate the resource using the parent's method. */
1115 if (flags & RF_ACTIVE)
1116 if (bus_activate_resource(child, type, *rid, res) != 0) {
1117 rman_release_resource(res);
1123 if (res != NULL && device_get_parent(child) == bus)
1127 * Since bus_config_intr() takes immediate effect, we cannot
1128 * configure the interrupt associated with a device when we
1129 * parse the resources but have to defer it until a driver
1130 * actually allocates the interrupt via bus_alloc_resource().
1132 * XXX: Should we handle the lookup failing?
1134 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
1135 acpi_config_intr(child, &ares);
1137 kprintf("irq resource not found\n");
1142 ACPI_SERIAL_END(acpi);
1147 acpi_release_resource(device_t bus, device_t child, int type, int rid,
1153 /* We only handle memory and IO resources through rman. */
1155 case SYS_RES_IOPORT:
1158 case SYS_RES_MEMORY:
1159 rm = &acpi_rman_mem;
1165 ACPI_SERIAL_BEGIN(acpi);
1168 * If this resource belongs to one of our internal managers,
1169 * deactivate it and release it to the local pool. If it doesn't,
1170 * pass this request up to the parent.
1172 if (rm != NULL && rman_is_region_manager(r, rm)) {
1173 if (rman_get_flags(r) & RF_ACTIVE) {
1174 ret = bus_deactivate_resource(child, type, rid, r);
1178 ret = rman_release_resource(r);
1180 ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
1183 ACPI_SERIAL_END(acpi);
1188 acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1190 struct resource_list *rl;
1192 rl = acpi_get_rlist(bus, child);
1193 resource_list_delete(rl, type, rid);
1196 /* Allocate an IO port or memory resource, given its GAS. */
1198 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1199 struct resource **res, u_int flags)
1201 int error, res_type;
1204 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1207 /* We only support memory and IO spaces. */
1208 switch (gas->SpaceId) {
1209 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1210 res_type = SYS_RES_MEMORY;
1212 case ACPI_ADR_SPACE_SYSTEM_IO:
1213 res_type = SYS_RES_IOPORT;
1216 return (EOPNOTSUPP);
1220 * If the register width is less than 8, assume the BIOS author means
1221 * it is a bit field and just allocate a byte.
1223 if (gas->BitWidth && gas->BitWidth < 8)
1226 /* Validate the address after we're sure we support the space. */
1227 if (gas->Address == 0 || gas->BitWidth == 0)
1230 bus_set_resource(dev, res_type, *rid, gas->Address,
1231 gas->BitWidth / 8, -1);
1232 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1237 bus_delete_resource(dev, res_type, *rid);
1243 acpi_eval_osc(device_t dev, ACPI_HANDLE handle, const char *uuidstr,
1244 int revision, uint32_t *buf, int count)
1246 ACPI_BUFFER retbuf = { ACPI_ALLOCATE_BUFFER, NULL };
1247 ACPI_OBJECT_LIST arglist;
1249 ACPI_OBJECT *retobj;
1253 uint8_t oscuuid[16];
1256 if (parse_uuid(uuidstr, &uuid) != 0)
1258 le_uuid_enc(oscuuid, &uuid);
1260 arglist.Pointer = arg;
1262 arg[0].Type = ACPI_TYPE_BUFFER;
1263 arg[0].Buffer.Length = sizeof(oscuuid);
1264 arg[0].Buffer.Pointer = oscuuid; /* UUID */
1265 arg[1].Type = ACPI_TYPE_INTEGER;
1266 arg[1].Integer.Value = revision; /* revision */
1267 arg[2].Type = ACPI_TYPE_INTEGER;
1268 arg[2].Integer.Value = count; /* # of cap integers */
1269 arg[3].Type = ACPI_TYPE_BUFFER;
1270 arg[3].Buffer.Length = count * sizeof(uint32_t); /* capabilities buffer */
1271 arg[3].Buffer.Pointer = (uint8_t *)buf;
1273 status = AcpiEvaluateObject(handle, "_OSC", &arglist, &retbuf);
1274 if (ACPI_FAILURE(status)) {
1277 retobj = retbuf.Pointer;
1278 error = ((uint32_t *)retobj->Buffer.Pointer)[0] &
1279 ~ACPI_OSC_QUERY_SUPPORT;
1280 if (error & ACPI_OSCERR_OSCFAIL) {
1281 device_printf(dev, "_OSC unable to process request\n");
1284 if (error & ACPI_OSCERR_UUID) {
1285 device_printf(dev, "_OSC unrecognized UUID (%s)\n", uuidstr);
1288 if (error & ACPI_OSCERR_REVISION) {
1289 device_printf(dev, "_OSC unrecognized revision ID (%d)\n",
1293 if (error & ACPI_OSCERR_CAPSMASKED) {
1294 if (buf[0] & ACPI_OSC_QUERY_SUPPORT)
1296 for (i = 1; i < count; i++) {
1298 "_OSC capabilities have been masked: buf[%d]:%#x\n",
1299 i, buf[i] & ~((uint32_t *)retobj->Buffer.Pointer)[i]);
1301 status = AE_SUPPORT;
1306 AcpiOsFree(retbuf.Pointer);
1310 /* Probe _HID and _CID for compatible ISA PNP ids. */
1312 acpi_isa_get_logicalid(device_t dev)
1314 ACPI_DEVICE_INFO *devinfo;
1318 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1323 /* Fetch and validate the HID. */
1324 if ((h = acpi_get_handle(dev)) == NULL ||
1325 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1328 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
1329 pnpid = PNP_EISAID(devinfo->HardwareId.String);
1333 AcpiOsFree(devinfo);
1334 return_VALUE (pnpid);
1338 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1340 ACPI_DEVICE_INFO *devinfo;
1345 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1351 /* Fetch and validate the CID */
1352 if ((h = acpi_get_handle(dev)) == NULL ||
1353 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)) ||
1354 (devinfo->Valid & ACPI_VALID_CID) == 0)
1357 if (devinfo->CompatibleIdList.Count < count)
1358 count = devinfo->CompatibleIdList.Count;
1359 for (i = 0; i < count; i++) {
1360 if (strncmp(devinfo->CompatibleIdList.Ids[i].String, "PNP", 3) != 0)
1362 *pnpid++ = PNP_EISAID(devinfo->CompatibleIdList.Ids[i].String);
1368 AcpiOsFree(devinfo);
1369 return_VALUE (valid);
1373 acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1378 h = acpi_get_handle(dev);
1379 if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE)
1382 /* Try to match one of the array of IDs with a HID or CID. */
1383 for (i = 0; ids[i] != NULL; i++) {
1384 if (acpi_MatchHid(h, ids[i]))
1391 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1392 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1397 h = ACPI_ROOT_OBJECT;
1398 else if ((h = acpi_get_handle(dev)) == NULL)
1399 return (AE_BAD_PARAMETER);
1400 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1404 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1406 struct acpi_softc *sc;
1412 sc = device_get_softc(bus);
1413 handle = acpi_get_handle(dev);
1416 * XXX If we find these devices, don't try to power them down.
1417 * The serial and IRDA ports on my T23 hang the system when
1418 * set to D3 and it appears that such legacy devices may
1419 * need special handling in their drivers.
1421 if (handle == NULL ||
1422 acpi_MatchHid(handle, "PNP0500") ||
1423 acpi_MatchHid(handle, "PNP0501") ||
1424 acpi_MatchHid(handle, "PNP0502") ||
1425 acpi_MatchHid(handle, "PNP0510") ||
1426 acpi_MatchHid(handle, "PNP0511"))
1430 * Override next state with the value from _SxD, if present. If no
1431 * dstate argument was provided, don't fetch the return value.
1433 ksnprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1435 status = acpi_GetInteger(handle, sxd, dstate);
1437 status = AcpiEvaluateObject(handle, sxd, NULL, NULL);
1454 /* Callback arg for our implementation of walking the namespace. */
1455 struct acpi_device_scan_ctx {
1456 acpi_scan_cb_t user_fn;
1462 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1464 struct acpi_device_scan_ctx *ctx;
1465 device_t dev, old_dev;
1467 ACPI_OBJECT_TYPE type;
1470 * Skip this device if we think we'll have trouble with it or it is
1471 * the parent where the scan began.
1473 ctx = (struct acpi_device_scan_ctx *)arg;
1474 if (acpi_avoid(h) || h == ctx->parent)
1477 /* If this is not a valid device type (e.g., a method), skip it. */
1478 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1480 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1481 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1485 * Call the user function with the current device. If it is unchanged
1486 * afterwards, return. Otherwise, we update the handle to the new dev.
1488 old_dev = acpi_get_device(h);
1490 status = ctx->user_fn(h, &dev, level, ctx->arg);
1491 if (ACPI_FAILURE(status) || old_dev == dev)
1494 /* Remove the old child and its connection to the handle. */
1495 if (old_dev != NULL) {
1496 device_delete_child(device_get_parent(old_dev), old_dev);
1497 AcpiDetachData(h, acpi_fake_objhandler);
1500 /* Recreate the handle association if the user created a device. */
1502 AcpiAttachData(h, acpi_fake_objhandler, dev);
1508 acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1509 acpi_scan_cb_t user_fn, void *arg)
1512 struct acpi_device_scan_ctx ctx;
1514 if (acpi_disabled("children"))
1518 h = ACPI_ROOT_OBJECT;
1519 else if ((h = acpi_get_handle(dev)) == NULL)
1520 return (AE_BAD_PARAMETER);
1521 ctx.user_fn = user_fn;
1524 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1525 acpi_device_scan_cb, NULL, &ctx, NULL));
1529 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1530 * device power states since it's close enough to ACPI.
1533 acpi_set_powerstate_method(device_t bus, device_t child, int state)
1540 h = acpi_get_handle(child);
1541 if (state < ACPI_STATE_D0 || state > ACPI_STATE_D3)
1546 /* Ignore errors if the power methods aren't present. */
1547 status = acpi_pwr_switch_consumer(h, state);
1548 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND
1549 && status != AE_BAD_PARAMETER)
1550 device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n",
1551 state, acpi_name(h), AcpiFormatException(status));
1557 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1559 int result, cid_count, i;
1560 uint32_t lid, cids[8];
1562 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1565 * ISA-style drivers attached to ACPI may persist and
1566 * probe manually if we return ENOENT. We never want
1567 * that to happen, so don't ever return it.
1571 /* Scan the supplied IDs for a match */
1572 lid = acpi_isa_get_logicalid(child);
1573 cid_count = acpi_isa_get_compatid(child, cids, 8);
1574 while (ids && ids->ip_id) {
1575 if (lid == ids->ip_id) {
1579 for (i = 0; i < cid_count; i++) {
1580 if (cids[i] == ids->ip_id) {
1589 if (result == 0 && ids->ip_desc)
1590 device_set_desc(child, ids->ip_desc);
1592 return_VALUE (result);
1596 * Look for a MCFG table. If it is present, use the settings for
1597 * domain (segment) 0 to setup PCI config space access via the memory
1601 acpi_enable_pcie(void)
1603 ACPI_TABLE_HEADER *hdr;
1604 ACPI_MCFG_ALLOCATION *alloc, *end;
1607 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1608 if (ACPI_FAILURE(status))
1611 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1612 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1613 while (alloc < end) {
1614 if (alloc->PciSegment == 0) {
1615 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1616 alloc->EndBusNumber);
1624 * Scan all of the ACPI namespace and attach child devices.
1626 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1627 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1628 * However, in violation of the spec, some systems place their PCI link
1629 * devices in \, so we have to walk the whole namespace. We check the
1630 * type of namespace nodes, so this should be ok.
1633 acpi_probe_children(device_t bus)
1636 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1639 * Scan the namespace and insert placeholders for all the devices that
1640 * we find. We also probe/attach any early devices.
1642 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1643 * we want to create nodes for all devices, not just those that are
1644 * currently present. (This assumes that we don't want to create/remove
1645 * devices as they appear, which might be smarter.)
1647 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1648 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100,
1649 acpi_probe_child, NULL, bus, NULL);
1651 /* Pre-allocate resources for our rman from any sysresource devices. */
1652 acpi_sysres_alloc(bus);
1653 /* Create any static children by calling device identify methods. */
1654 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1655 bus_generic_probe(bus);
1657 /* Probe/attach all children, created staticly and from the namespace. */
1658 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1659 bus_generic_attach(bus);
1662 * Some of these children may have attached others as part of their attach
1663 * process (eg. the root PCI bus driver), so rescan.
1665 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1666 bus_generic_attach(bus);
1668 /* Attach wake sysctls. */
1669 acpi_wake_sysctl_walk(bus);
1671 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1676 * Determine the probe order for a given device.
1679 acpi_probe_order(ACPI_HANDLE handle, int *order)
1681 ACPI_OBJECT_TYPE type;
1684 * 1. I/O port and memory system resource holders
1685 * 2. Embedded controllers (to handle early accesses)
1686 * 3. PCI Link Devices
1689 AcpiGetType(handle, &type);
1690 if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
1692 else if (acpi_MatchHid(handle, "PNP0C09"))
1694 else if (acpi_MatchHid(handle, "PNP0C0F"))
1696 else if (type == ACPI_TYPE_PROCESSOR)
1701 * Evaluate a child device and determine whether we might attach a device to
1705 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1707 struct acpi_prw_data prw;
1708 ACPI_OBJECT_TYPE type;
1710 device_t bus, child;
1714 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1716 if (acpi_disabled("children"))
1717 return_ACPI_STATUS (AE_OK);
1719 /* Skip this device if we think we'll have trouble with it. */
1720 if (acpi_avoid(handle))
1721 return_ACPI_STATUS (AE_OK);
1723 bus = (device_t)context;
1724 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1725 handle_str = acpi_name(handle);
1727 case ACPI_TYPE_DEVICE:
1729 * Since we scan from \, be sure to skip system scope objects.
1730 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1731 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
1732 * during the intialization and \_TZ_ is to support Notify() on it.
1734 if (strcmp(handle_str, "\\_SB_") == 0 ||
1735 strcmp(handle_str, "\\_TZ_") == 0)
1738 if (acpi_parse_prw(handle, &prw) == 0)
1739 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
1742 case ACPI_TYPE_PROCESSOR:
1743 case ACPI_TYPE_THERMAL:
1744 case ACPI_TYPE_POWER:
1746 * Create a placeholder device for this node. Sort the
1747 * placeholder so that the probe/attach passes will run
1748 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1749 * are reserved for special objects (i.e., system
1750 * resources). CPU devices have a very high order to
1751 * ensure they are probed after other devices.
1753 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1754 order = level * 10 + 100;
1755 acpi_probe_order(handle, &order);
1756 child = BUS_ADD_CHILD(bus, bus, order, NULL, -1);
1760 /* Associate the handle with the device_t and vice versa. */
1761 acpi_set_handle(child, handle);
1762 AcpiAttachData(handle, acpi_fake_objhandler, child);
1765 * Check that the device is present. If it's not present,
1766 * leave it disabled (so that we have a device_t attached to
1767 * the handle, but we don't probe it).
1769 * XXX PCI link devices sometimes report "present" but not
1770 * "functional" (i.e. if disabled). Go ahead and probe them
1771 * anyway since we may enable them later.
1773 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1774 /* Never disable PCI link devices. */
1775 if (acpi_MatchHid(handle, "PNP0C0F"))
1778 * Docking stations should remain enabled since the system
1779 * may be undocked at boot.
1781 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1784 device_disable(child);
1789 * Get the device's resource settings and attach them.
1790 * Note that if the device has _PRS but no _CRS, we need
1791 * to decide when it's appropriate to try to configure the
1792 * device. Ignore the return value here; it's OK for the
1793 * device not to have any resources.
1795 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
1800 return_ACPI_STATUS (AE_OK);
1804 * AcpiAttachData() requires an object handler but never uses it. This is a
1805 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1808 acpi_fake_objhandler(ACPI_HANDLE h, void *data)
1813 acpi_shutdown_final(void *arg, int howto)
1815 struct acpi_softc *sc;
1819 * XXX Shutdown code should only run on the BSP (cpuid 0).
1820 * Some chipsets do not power off the system correctly if called from
1824 if ((howto & RB_POWEROFF) != 0) {
1825 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1826 if (ACPI_FAILURE(status)) {
1827 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
1828 AcpiFormatException(status));
1831 device_printf(sc->acpi_dev, "Powering system off\n");
1832 ACPI_DISABLE_IRQS();
1833 status = AcpiEnterSleepState(ACPI_STATE_S5);
1834 if (ACPI_FAILURE(status)) {
1835 device_printf(sc->acpi_dev, "power-off failed - %s\n",
1836 AcpiFormatException(status));
1839 device_printf(sc->acpi_dev, "power-off failed - timeout\n");
1841 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) {
1842 /* Reboot using the reset register. */
1843 status = AcpiReset();
1844 if (ACPI_FAILURE(status)) {
1845 if (status != AE_NOT_EXIST)
1846 device_printf(sc->acpi_dev, "reset failed - %s\n",
1847 AcpiFormatException(status));
1850 device_printf(sc->acpi_dev, "reset failed - timeout\n");
1852 } else if (sc->acpi_do_disable && panicstr == NULL) {
1854 * Only disable ACPI if the user requested. On some systems, writing
1855 * the disable value to SMI_CMD hangs the system.
1857 device_printf(sc->acpi_dev, "Shutting down\n");
1863 acpi_enable_fixed_events(struct acpi_softc *sc)
1865 static int first_time = 1;
1867 /* Enable and clear fixed events and install handlers. */
1868 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
1869 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1870 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1871 acpi_event_power_button_sleep, sc);
1873 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1875 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
1876 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1877 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1878 acpi_event_sleep_button_sleep, sc);
1880 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1887 * Returns true if the device is actually present and should
1888 * be attached to. This requires the present, enabled, UI-visible
1889 * and diagnostics-passed bits to be set.
1892 acpi_DeviceIsPresent(device_t dev)
1894 ACPI_DEVICE_INFO *devinfo;
1899 if ((h = acpi_get_handle(dev)) == NULL ||
1900 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1903 /* If no _STA method, must be present */
1904 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1907 /* Return true for 'present' and 'functioning' */
1908 if (ACPI_DEVICE_PRESENT(devinfo->CurrentStatus))
1911 AcpiOsFree(devinfo);
1916 * Returns true if the battery is actually present and inserted.
1919 acpi_BatteryIsPresent(device_t dev)
1921 ACPI_DEVICE_INFO *devinfo;
1926 if ((h = acpi_get_handle(dev)) == NULL ||
1927 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1930 /* If no _STA method, must be present */
1931 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1934 /* Return true for 'present', 'battery present', and 'functioning' */
1935 if (ACPI_BATTERY_PRESENT(devinfo->CurrentStatus))
1938 AcpiOsFree(devinfo);
1943 * Match a HID string against a handle
1946 acpi_MatchHid(ACPI_HANDLE h, const char *hid)
1948 ACPI_DEVICE_INFO *devinfo;
1952 if (hid == NULL || h == NULL ||
1953 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1956 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
1957 strcmp(hid, devinfo->HardwareId.String) == 0)
1959 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
1960 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
1961 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
1968 AcpiOsFree(devinfo);
1973 * Return the handle of a named object within our scope, ie. that of (parent)
1974 * or one if its parents.
1977 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1982 /* Walk back up the tree to the root */
1984 status = AcpiGetHandle(parent, path, &r);
1985 if (ACPI_SUCCESS(status)) {
1989 /* XXX Return error here? */
1990 if (status != AE_NOT_FOUND)
1992 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1993 return (AE_NOT_FOUND);
1999 * Allocate a buffer with a preset data size.
2002 acpi_AllocBuffer(int size)
2006 if ((buf = kmalloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
2009 buf->Pointer = (void *)(buf + 1);
2014 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
2017 ACPI_OBJECT_LIST args;
2019 arg1.Type = ACPI_TYPE_INTEGER;
2020 arg1.Integer.Value = number;
2022 args.Pointer = &arg1;
2024 return (AcpiEvaluateObject(handle, path, &args, NULL));
2028 * Evaluate a path that should return an integer.
2031 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
2038 handle = ACPI_ROOT_OBJECT;
2041 * Assume that what we've been pointed at is an Integer object, or
2042 * a method that will return an Integer.
2044 buf.Pointer = ¶m;
2045 buf.Length = sizeof(param);
2046 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2047 if (ACPI_SUCCESS(status)) {
2048 if (param.Type == ACPI_TYPE_INTEGER)
2049 *number = param.Integer.Value;
2055 * In some applications, a method that's expected to return an Integer
2056 * may instead return a Buffer (probably to simplify some internal
2057 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
2058 * convert it into an Integer as best we can.
2062 if (status == AE_BUFFER_OVERFLOW) {
2063 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
2064 status = AE_NO_MEMORY;
2066 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2067 if (ACPI_SUCCESS(status))
2068 status = acpi_ConvertBufferToInteger(&buf, number);
2069 AcpiOsFree(buf.Pointer);
2076 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2082 p = (ACPI_OBJECT *)bufp->Pointer;
2083 if (p->Type == ACPI_TYPE_INTEGER) {
2084 *number = p->Integer.Value;
2087 if (p->Type != ACPI_TYPE_BUFFER)
2089 if (p->Buffer.Length > sizeof(int))
2090 return (AE_BAD_DATA);
2093 val = p->Buffer.Pointer;
2094 for (i = 0; i < p->Buffer.Length; i++)
2095 *number += val[i] << (i * 8);
2100 * Iterate over the elements of an a package object, calling the supplied
2101 * function for each element.
2103 * XXX possible enhancement might be to abort traversal on error.
2106 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2107 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2112 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2113 return (AE_BAD_PARAMETER);
2115 /* Iterate over components */
2117 comp = pkg->Package.Elements;
2118 for (; i < pkg->Package.Count; i++, comp++)
2125 * Find the (index)th resource object in a set.
2128 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2133 rp = (ACPI_RESOURCE *)buf->Pointer;
2137 if (rp > (ACPI_RESOURCE *)((uint8_t *)buf->Pointer + buf->Length))
2138 return (AE_BAD_PARAMETER);
2140 /* Check for terminator */
2141 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2142 return (AE_NOT_FOUND);
2143 rp = ACPI_NEXT_RESOURCE(rp);
2152 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2154 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2155 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2156 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2159 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2162 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2167 /* Initialise the buffer if necessary. */
2168 if (buf->Pointer == NULL) {
2169 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2170 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2171 return (AE_NO_MEMORY);
2172 rp = (ACPI_RESOURCE *)buf->Pointer;
2173 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2174 rp->Length = ACPI_RS_SIZE_MIN;
2180 * Scan the current buffer looking for the terminator.
2181 * This will either find the terminator or hit the end
2182 * of the buffer and return an error.
2184 rp = (ACPI_RESOURCE *)buf->Pointer;
2186 /* Range check, don't go outside the buffer */
2187 if (rp >= (ACPI_RESOURCE *)((uint8_t *)buf->Pointer + buf->Length))
2188 return (AE_BAD_PARAMETER);
2189 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2191 rp = ACPI_NEXT_RESOURCE(rp);
2195 * Check the size of the buffer and expand if required.
2198 * size of existing resources before terminator +
2199 * size of new resource and header +
2200 * size of terminator.
2202 * Note that this loop should really only run once, unless
2203 * for some reason we are stuffing a *really* huge resource.
2205 while ((((uint8_t *)rp - (uint8_t *)buf->Pointer) +
2206 res->Length + ACPI_RS_SIZE_NO_DATA +
2207 ACPI_RS_SIZE_MIN) >= buf->Length) {
2208 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2209 return (AE_NO_MEMORY);
2210 bcopy(buf->Pointer, newp, buf->Length);
2211 rp = (ACPI_RESOURCE *)((uint8_t *)newp +
2212 ((uint8_t *)rp - (uint8_t *)buf->Pointer));
2213 AcpiOsFree(buf->Pointer);
2214 buf->Pointer = newp;
2215 buf->Length += buf->Length;
2218 /* Insert the new resource. */
2219 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2221 /* And add the terminator. */
2222 rp = ACPI_NEXT_RESOURCE(rp);
2223 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2224 rp->Length = ACPI_RS_SIZE_MIN;
2230 * Set interrupt model.
2233 acpi_SetIntrModel(int model)
2236 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2240 * DEPRECATED. This interface has serious deficiencies and will be
2243 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2244 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2247 acpi_SetSleepState(struct acpi_softc *sc, int state)
2252 device_printf(sc->acpi_dev,
2253 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2256 return (acpi_EnterSleepState(sc, state));
2260 acpi_sleep_force(void *arg)
2262 struct acpi_softc *sc;
2265 device_printf(sc->acpi_dev,
2266 "suspend request timed out, forcing sleep now\n");
2267 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2268 device_printf(sc->acpi_dev, "force sleep state S%d failed\n",
2269 sc->acpi_next_sstate);
2273 * Request that the system enter the given suspend state. All /dev/apm
2274 * devices and devd(8) will be notified. Userland then has a chance to
2275 * save state and acknowledge the request. The system sleeps once all
2279 acpi_ReqSleepState(struct acpi_softc *sc, int state)
2282 struct apm_clone_data *clone;
2285 if (state < ACPI_STATE_S1 || state > ACPI_STATE_S5)
2288 /* S5 (soft-off) should be entered directly with no waiting. */
2289 if (state == ACPI_STATE_S5) {
2290 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, state)))
2296 /* This platform does not support acpi suspend/resume. */
2297 return (EOPNOTSUPP);
2299 /* If a suspend request is already in progress, just return. */
2301 if (sc->acpi_next_sstate != 0) {
2306 /* Record the pending state and notify all apm devices. */
2307 sc->acpi_next_sstate = state;
2309 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2310 clone->notify_status = APM_EV_NONE;
2311 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
2312 KNOTE(&clone->sel_read.si_note, 0);
2317 /* If devd(8) is not running, immediately enter the sleep state. */
2318 if (devctl_process_running() == FALSE) {
2320 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) {
2327 /* Now notify devd(8) also. */
2328 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2331 * Set a timeout to fire if userland doesn't ack the suspend request
2332 * in time. This way we still eventually go to sleep if we were
2333 * overheating or running low on battery, even if userland is hung.
2334 * We cancel this timeout once all userland acks are in or the
2335 * suspend request is aborted.
2337 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2343 * Acknowledge (or reject) a pending sleep state. The caller has
2344 * prepared for suspend and is now ready for it to proceed. If the
2345 * error argument is non-zero, it indicates suspend should be cancelled
2346 * and gives an errno value describing why. Once all votes are in,
2347 * we suspend the system.
2350 acpi_AckSleepState(struct apm_clone_data *clone, int error)
2352 struct acpi_softc *sc;
2355 /* This platform does not support acpi suspend/resume. */
2356 return (EOPNOTSUPP);
2358 /* If no pending sleep state, return an error. */
2360 sc = clone->acpi_sc;
2361 if (sc->acpi_next_sstate == 0) {
2366 /* Caller wants to abort suspend process. */
2368 sc->acpi_next_sstate = 0;
2369 callout_stop(&sc->susp_force_to);
2370 device_printf(sc->acpi_dev,
2371 "listener on %s cancelled the pending suspend\n",
2372 devtoname(clone->cdev));
2378 * Mark this device as acking the suspend request. Then, walk through
2379 * all devices, seeing if they agree yet. We only count devices that
2380 * are writable since read-only devices couldn't ack the request.
2382 clone->notify_status = APM_EV_ACKED;
2384 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2385 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2386 clone->notify_status != APM_EV_ACKED) {
2392 /* If all devices have voted "yes", we will suspend now. */
2394 callout_stop(&sc->susp_force_to);
2398 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2406 acpi_sleep_enable(void *arg)
2408 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
2411 enum acpi_sleep_state {
2414 ACPI_SS_DEV_SUSPEND,
2420 * Enter the desired system sleep state.
2422 * Currently we support S1-S5 but S4 is only S4BIOS
2425 acpi_EnterSleepState(struct acpi_softc *sc, int state)
2430 enum acpi_sleep_state slp_state;
2432 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2434 /* Re-entry once we're suspending is not allowed. */
2437 if (sc->acpi_sleep_disabled) {
2439 device_printf(sc->acpi_dev,
2440 "suspend request ignored (not ready yet)\n");
2443 sc->acpi_sleep_disabled = 1;
2447 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2448 * drivers need this.
2451 slp_state = ACPI_SS_NONE;
2457 status = AcpiGetSleepTypeData(state, &TypeA, &TypeB);
2458 if (status == AE_NOT_FOUND) {
2459 device_printf(sc->acpi_dev,
2460 "Sleep state S%d not supported by BIOS\n", state);
2462 } else if (ACPI_FAILURE(status)) {
2463 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
2464 AcpiFormatException(status));
2468 sc->acpi_sstate = state;
2470 /* Enable any GPEs as appropriate and requested by the user. */
2471 acpi_wake_prep_walk(state);
2472 slp_state = ACPI_SS_GPE_SET;
2475 * Inform all devices that we are going to sleep. If at least one
2476 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2478 * XXX Note that a better two-pass approach with a 'veto' pass
2479 * followed by a "real thing" pass would be better, but the current
2480 * bus interface does not provide for this.
2482 if (DEVICE_SUSPEND(root_bus) != 0) {
2483 device_printf(sc->acpi_dev, "device_suspend failed\n");
2486 slp_state = ACPI_SS_DEV_SUSPEND;
2488 /* If testing device suspend only, back out of everything here. */
2489 if (acpi_susp_bounce)
2492 status = AcpiEnterSleepStatePrep(state);
2493 if (ACPI_FAILURE(status)) {
2494 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2495 AcpiFormatException(status));
2498 slp_state = ACPI_SS_SLP_PREP;
2500 if (sc->acpi_sleep_delay > 0)
2501 DELAY(sc->acpi_sleep_delay * 1000000);
2503 if (state != ACPI_STATE_S1) {
2504 acpi_sleep_machdep(sc, state);
2506 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2507 if (state == ACPI_STATE_S4)
2510 ACPI_DISABLE_IRQS();
2511 status = AcpiEnterSleepState(state);
2512 if (ACPI_FAILURE(status)) {
2513 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2514 AcpiFormatException(status));
2518 slp_state = ACPI_SS_SLEPT;
2522 * Shut down cleanly and power off. This will call us back through the
2523 * shutdown handlers.
2525 shutdown_nice(RB_POWEROFF);
2529 status = AE_BAD_PARAMETER;
2534 * Back out state according to how far along we got in the suspend
2535 * process. This handles both the error and success cases.
2537 sc->acpi_next_sstate = 0;
2538 if (slp_state >= ACPI_SS_GPE_SET) {
2539 acpi_wake_prep_walk(state);
2540 sc->acpi_sstate = ACPI_STATE_S0;
2542 if (slp_state >= ACPI_SS_SLP_PREP)
2543 AcpiLeaveSleepState(state);
2544 if (slp_state >= ACPI_SS_DEV_SUSPEND)
2545 DEVICE_RESUME(root_bus);
2546 if (slp_state >= ACPI_SS_SLEPT)
2547 acpi_enable_fixed_events(sc);
2549 /* Allow another sleep request after a while. */
2550 /* XXX: needs timeout */
2551 if (state != ACPI_STATE_S5)
2552 acpi_sleep_enable(sc);
2554 /* Run /etc/rc.resume after we are back. */
2555 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2558 return_ACPI_STATUS (status);
2561 /* Enable or disable the device's GPE. */
2563 acpi_wake_set_enable(device_t dev, int enable)
2565 struct acpi_prw_data prw;
2569 /* Make sure the device supports waking the system and get the GPE. */
2570 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2573 flags = acpi_get_flags(dev);
2575 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
2577 if (ACPI_FAILURE(status)) {
2578 device_printf(dev, "enable wake failed\n");
2581 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2583 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
2585 if (ACPI_FAILURE(status)) {
2586 device_printf(dev, "disable wake failed\n");
2589 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2596 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
2598 struct acpi_prw_data prw;
2601 /* Check that this is a wake-capable device and get its GPE. */
2602 if (acpi_parse_prw(handle, &prw) != 0)
2604 dev = acpi_get_device(handle);
2607 * The destination sleep state must be less than (i.e., higher power)
2608 * or equal to the value specified by _PRW. If this GPE cannot be
2609 * enabled for the next sleep state, then disable it. If it can and
2610 * the user requested it be enabled, turn on any required power resources
2613 if (sstate > prw.lowest_wake) {
2614 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
2616 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2617 acpi_name(handle), sstate);
2618 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2619 acpi_pwr_wake_enable(handle, 1);
2620 acpi_SetInteger(handle, "_PSW", 1);
2622 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2623 acpi_name(handle), sstate);
2630 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
2632 struct acpi_prw_data prw;
2636 * Check that this is a wake-capable device and get its GPE. Return
2637 * now if the user didn't enable this device for wake.
2639 if (acpi_parse_prw(handle, &prw) != 0)
2641 dev = acpi_get_device(handle);
2642 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2646 * If this GPE couldn't be enabled for the previous sleep state, it was
2647 * disabled before going to sleep so re-enable it. If it was enabled,
2648 * clear _PSW and turn off any power resources it used.
2650 if (sstate > prw.lowest_wake) {
2651 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
2653 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2655 acpi_SetInteger(handle, "_PSW", 0);
2656 acpi_pwr_wake_enable(handle, 0);
2658 device_printf(dev, "run_prep cleaned up for %s\n",
2666 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
2670 /* If suspending, run the sleep prep function, otherwise wake. */
2671 sstate = *(int *)context;
2672 if (AcpiGbl_SystemAwakeAndRunning)
2673 acpi_wake_sleep_prep(handle, sstate);
2675 acpi_wake_run_prep(handle, sstate);
2679 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2681 acpi_wake_prep_walk(int sstate)
2683 ACPI_HANDLE sb_handle;
2685 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) {
2686 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
2687 acpi_wake_prep, NULL, &sstate, NULL);
2692 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2694 acpi_wake_sysctl_walk(device_t dev)
2697 int error, i, numdevs;
2702 error = device_get_children(dev, &devlist, &numdevs);
2703 if (error != 0 || numdevs == 0) {
2705 kfree(devlist, M_TEMP);
2708 for (i = 0; i < numdevs; i++) {
2710 acpi_wake_sysctl_walk(child);
2711 if (!device_is_attached(child))
2713 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
2714 if (ACPI_SUCCESS(status)) {
2715 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
2716 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
2717 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
2718 acpi_wake_set_sysctl, "I", "Device set to wake the system");
2721 kfree(devlist, M_TEMP);
2728 /* Enable or disable wake from userland. */
2730 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2735 dev = (device_t)arg1;
2736 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
2738 error = sysctl_handle_int(oidp, &enable, 0, req);
2739 if (error != 0 || req->newptr == NULL)
2741 if (enable != 0 && enable != 1)
2744 return (acpi_wake_set_enable(dev, enable));
2748 /* Parse a device's _PRW into a structure. */
2750 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2753 ACPI_BUFFER prw_buffer;
2754 ACPI_OBJECT *res, *res2;
2755 int error, i, power_count;
2757 if (h == NULL || prw == NULL)
2761 * The _PRW object (7.2.9) is only required for devices that have the
2762 * ability to wake the system from a sleeping state.
2765 prw_buffer.Pointer = NULL;
2766 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2767 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2768 if (ACPI_FAILURE(status))
2770 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2773 if (!ACPI_PKG_VALID(res, 2))
2777 * Element 1 of the _PRW object:
2778 * The lowest power system sleeping state that can be entered while still
2779 * providing wake functionality. The sleeping state being entered must
2780 * be less than (i.e., higher power) or equal to this value.
2782 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2786 * Element 0 of the _PRW object:
2788 switch (res->Package.Elements[0].Type) {
2789 case ACPI_TYPE_INTEGER:
2791 * If the data type of this package element is numeric, then this
2792 * _PRW package element is the bit index in the GPEx_EN, in the
2793 * GPE blocks described in the FADT, of the enable bit that is
2794 * enabled for the wake event.
2796 prw->gpe_handle = NULL;
2797 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2800 case ACPI_TYPE_PACKAGE:
2802 * If the data type of this package element is a package, then this
2803 * _PRW package element is itself a package containing two
2804 * elements. The first is an object reference to the GPE Block
2805 * device that contains the GPE that will be triggered by the wake
2806 * event. The second element is numeric and it contains the bit
2807 * index in the GPEx_EN, in the GPE Block referenced by the
2808 * first element in the package, of the enable bit that is enabled for
2811 * For example, if this field is a package then it is of the form:
2812 * Package() {\_SB.PCI0.ISA.GPE, 2}
2814 res2 = &res->Package.Elements[0];
2815 if (!ACPI_PKG_VALID(res2, 2))
2817 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2818 if (prw->gpe_handle == NULL)
2820 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2828 /* Elements 2 to N of the _PRW object are power resources. */
2829 power_count = res->Package.Count - 2;
2830 if (power_count > ACPI_PRW_MAX_POWERRES) {
2831 kprintf("ACPI device %s has too many power resources\n", acpi_name(h));
2834 prw->power_res_count = power_count;
2835 for (i = 0; i < power_count; i++)
2836 prw->power_res[i] = res->Package.Elements[i];
2839 if (prw_buffer.Pointer != NULL)
2840 AcpiOsFree(prw_buffer.Pointer);
2845 * ACPI Event Handlers
2848 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2851 acpi_system_eventhandler_sleep(void *arg, int state)
2853 struct acpi_softc *sc;
2856 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2860 /* Check if button action is disabled. */
2861 if (state == ACPI_S_STATES_MAX + 1)
2864 /* Request that the system prepare to enter the given suspend state. */
2865 ret = acpi_ReqSleepState((struct acpi_softc *)arg, state);
2867 device_printf(sc->acpi_dev,
2868 "request to enter state S%d failed (err %d)\n", state, ret);
2874 acpi_system_eventhandler_wakeup(void *arg, int state)
2877 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2879 /* Currently, nothing to do for wakeup. */
2885 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2888 acpi_event_power_button_sleep(void *context)
2890 struct acpi_softc *sc = (struct acpi_softc *)context;
2892 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2894 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2896 return_VALUE (ACPI_INTERRUPT_HANDLED);
2900 acpi_event_power_button_wake(void *context)
2902 struct acpi_softc *sc = (struct acpi_softc *)context;
2904 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2906 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2908 return_VALUE (ACPI_INTERRUPT_HANDLED);
2912 acpi_event_sleep_button_sleep(void *context)
2914 struct acpi_softc *sc = (struct acpi_softc *)context;
2916 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2918 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2920 return_VALUE (ACPI_INTERRUPT_HANDLED);
2924 acpi_event_sleep_button_wake(void *context)
2926 struct acpi_softc *sc = (struct acpi_softc *)context;
2928 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2930 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2932 return_VALUE (ACPI_INTERRUPT_HANDLED);
2936 * XXX This static buffer is suboptimal. There is no locking so only
2937 * use this for single-threaded callers.
2940 acpi_name(ACPI_HANDLE handle)
2943 static char data[256];
2945 buf.Length = sizeof(data);
2948 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
2950 return ("(unknown)");
2954 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2955 * parts of the namespace.
2958 acpi_avoid(ACPI_HANDLE handle)
2960 char *cp, *env, *np;
2963 np = acpi_name(handle);
2966 if ((env = kgetenv("debug.acpi.avoid")) == NULL)
2969 /* Scan the avoid list checking for a match */
2972 while (*cp != 0 && isspace(*cp))
2977 while (cp[len] != 0 && !isspace(cp[len]))
2979 if (!strncmp(cp, np, len)) {
2991 * Debugging/bug-avoidance. Disable ACPI subsystem components.
2994 acpi_disabled(char *subsys)
2999 if ((env = kgetenv("debug.acpi.disabled")) == NULL)
3001 if (strcmp(env, "all") == 0) {
3006 /* Scan the disable list, checking for a match. */
3009 while (*cp != '\0' && isspace(*cp))
3014 while (cp[len] != '\0' && !isspace(cp[len]))
3016 if (strncmp(cp, subsys, len) == 0) {
3028 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
3029 * components are enabled by default. The ones that are not have to be
3030 * enabled via debug.acpi.enabled.
3033 acpi_enabled(char *subsys)
3038 if ((env = kgetenv("debug.acpi.enabled")) == NULL)
3040 if (strcmp(env, "all") == 0) {
3045 /* Scan the enable list, checking for a match. */
3048 while (*cp != '\0' && isspace(*cp))
3053 while (cp[len] != '\0' && !isspace(cp[len]))
3055 if (strncmp(cp, subsys, len) == 0) {
3067 * Control interface.
3069 * We multiplex ioctls for all participating ACPI devices here. Individual
3070 * drivers wanting to be accessible via /dev/acpi should use the
3071 * register/deregister interface to make their handlers visible.
3073 struct acpi_ioctl_hook
3075 TAILQ_ENTRY(acpi_ioctl_hook) link;
3081 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
3082 static int acpi_ioctl_hooks_initted;
3085 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
3087 struct acpi_ioctl_hook *hp;
3089 if ((hp = kmalloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
3096 if (acpi_ioctl_hooks_initted == 0) {
3097 TAILQ_INIT(&acpi_ioctl_hooks);
3098 acpi_ioctl_hooks_initted = 1;
3100 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
3107 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
3109 struct acpi_ioctl_hook *hp;
3112 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
3113 if (hp->cmd == cmd && hp->fn == fn)
3117 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
3118 kfree(hp, M_ACPIDEV);
3124 acpiopen(struct dev_open_args *ap)
3130 acpiclose(struct dev_close_args *ap)
3136 acpiioctl(struct dev_ioctl_args *ap)
3138 struct acpi_softc *sc;
3139 struct acpi_ioctl_hook *hp;
3144 sc = ap->a_head.a_dev->si_drv1;
3147 * Scan the list of registered ioctls, looking for handlers.
3150 if (acpi_ioctl_hooks_initted)
3151 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3152 if (hp->cmd == ap->a_cmd)
3157 return (hp->fn(ap->a_cmd, ap->a_data, hp->arg));
3160 * Core ioctls are not permitted for non-writable user.
3161 * Currently, other ioctls just fetch information.
3162 * Not changing system behavior.
3164 if ((ap->a_fflag & FWRITE) == 0)
3167 /* Core system ioctls. */
3168 switch (ap->a_cmd) {
3169 case ACPIIO_REQSLPSTATE:
3170 state = *(int *)ap->a_data;
3171 if (state != ACPI_STATE_S5)
3172 error = acpi_ReqSleepState(sc, state);
3174 device_printf(sc->acpi_dev,
3175 "power off via acpi ioctl not supported\n");
3179 case ACPIIO_ACKSLPSTATE:
3182 error = *(int *)ap->a_data;
3183 error = acpi_AckSleepState(sc->acpi_clone, error);
3186 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3188 state = *(int *)ap->a_data;
3189 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
3190 if (ACPI_SUCCESS(acpi_SetSleepState(sc, state)))
3193 case ACPIIO_DO_MCALL:
3194 if (acpi_allow_mcall == 1) {
3195 struct acpi_mcall_ioctl_arg *params;
3196 ACPI_BUFFER result = { ACPI_ALLOCATE_BUFFER, NULL };
3197 ACPI_OBJECT *resobj;
3200 params = (struct acpi_mcall_ioctl_arg *)ap->a_data;
3201 params->retval = AcpiEvaluateObject(NULL, params->path,
3202 ¶ms->args, &result);
3203 if (ACPI_SUCCESS(params->retval) && result.Pointer != NULL &&
3204 params->result.Pointer != NULL) {
3205 params->result.Length = min(params->result.Length,
3207 copyout(result.Pointer, params->result.Pointer,
3208 params->result.Length);
3209 params->reslen = result.Length;
3210 if (result.Length >= sizeof(ACPI_OBJECT)) {
3211 resobj = (ACPI_OBJECT *)params->result.Pointer;
3212 switch (resobj->Type) {
3213 case ACPI_TYPE_STRING:
3214 resobj->String.Pointer = (char *)
3215 ((UINT8 *)(resobj->String.Pointer) -
3216 (UINT8 *)result.Pointer +
3219 case ACPI_TYPE_BUFFER:
3220 resobj->Buffer.Pointer -= (UINT8 *)result.Pointer -
3227 if (result.Pointer != NULL)
3228 AcpiOsFree(result.Pointer);
3230 device_printf(sc->acpi_dev,
3231 "debug.acpi.allow_method_calls must be set\n");
3243 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3247 UINT8 state, TypeA, TypeB;
3249 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3250 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++)
3251 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
3252 sbuf_printf(&sb, "S%d ", state);
3255 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3261 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3263 char sleep_state[10];
3265 u_int new_state, old_state;
3267 old_state = *(u_int *)oidp->oid_arg1;
3268 if (old_state > ACPI_S_STATES_MAX + 1)
3269 strlcpy(sleep_state, "unknown", sizeof(sleep_state));
3271 strlcpy(sleep_state, sleep_state_names[old_state], sizeof(sleep_state));
3272 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3273 if (error == 0 && req->newptr != NULL) {
3274 new_state = ACPI_STATE_S0;
3275 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++)
3276 if (strcmp(sleep_state, sleep_state_names[new_state]) == 0)
3278 if (new_state <= ACPI_S_STATES_MAX + 1) {
3279 if (new_state != old_state)
3280 *(u_int *)oidp->oid_arg1 = new_state;
3288 /* Inform devctl(4) when we receive a Notify. */
3290 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3292 char notify_buf[16];
3293 ACPI_BUFFER handle_buf;
3296 if (subsystem == NULL)
3299 handle_buf.Pointer = NULL;
3300 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3301 status = AcpiNsHandleToPathname(h, &handle_buf, FALSE);
3302 if (ACPI_FAILURE(status))
3304 ksnprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
3305 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
3306 AcpiOsFree(handle_buf.Pointer);
3311 * Support for parsing debug options from the kernel environment.
3313 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3314 * by specifying the names of the bits in the debug.acpi.layer and
3315 * debug.acpi.level environment variables. Bits may be unset by
3316 * prefixing the bit name with !.
3324 static struct debugtag dbg_layer[] = {
3325 {"ACPI_UTILITIES", ACPI_UTILITIES},
3326 {"ACPI_HARDWARE", ACPI_HARDWARE},
3327 {"ACPI_EVENTS", ACPI_EVENTS},
3328 {"ACPI_TABLES", ACPI_TABLES},
3329 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3330 {"ACPI_PARSER", ACPI_PARSER},
3331 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3332 {"ACPI_EXECUTER", ACPI_EXECUTER},
3333 {"ACPI_RESOURCES", ACPI_RESOURCES},
3334 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3335 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3336 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3337 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3339 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3340 {"ACPI_BATTERY", ACPI_BATTERY},
3341 {"ACPI_BUS", ACPI_BUS},
3342 {"ACPI_BUTTON", ACPI_BUTTON},
3343 {"ACPI_EC", ACPI_EC},
3344 {"ACPI_FAN", ACPI_FAN},
3345 {"ACPI_POWERRES", ACPI_POWERRES},
3346 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3347 {"ACPI_THERMAL", ACPI_THERMAL},
3348 {"ACPI_TIMER", ACPI_TIMER},
3349 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3353 static struct debugtag dbg_level[] = {
3354 {"ACPI_LV_INIT", ACPI_LV_INIT},
3355 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3356 {"ACPI_LV_INFO", ACPI_LV_INFO},
3357 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR},
3358 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3360 /* Trace verbosity level 1 [Standard Trace Level] */
3361 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3362 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3363 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3364 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3365 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3366 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3367 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3368 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3369 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3370 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3371 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3372 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3373 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3374 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3375 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3377 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3378 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3379 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3380 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3381 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3382 {"ACPI_LV_ALL", ACPI_LV_ALL},
3384 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3385 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3386 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3387 {"ACPI_LV_IO", ACPI_LV_IO},
3388 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3389 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3391 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3392 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
3393 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
3394 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
3395 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
3396 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
3401 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
3413 while (*ep && !isspace(*ep))
3424 for (i = 0; tag[i].name != NULL; i++) {
3425 if (!strncmp(cp, tag[i].name, l)) {
3427 *flag |= tag[i].value;
3429 *flag &= ~tag[i].value;
3437 acpi_set_debugging(void *junk)
3439 char *layer, *level;
3446 layer = kgetenv("debug.acpi.layer");
3447 level = kgetenv("debug.acpi.level");
3448 if (layer == NULL && level == NULL)
3451 kprintf("ACPI set debug");
3452 if (layer != NULL) {
3453 if (strcmp("NONE", layer) != 0)
3454 kprintf(" layer '%s'", layer);
3455 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
3458 if (level != NULL) {
3459 if (strcmp("NONE", level) != 0)
3460 kprintf(" level '%s'", level);
3461 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
3467 SYSINIT(acpi_debugging, SI_BOOT1_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3471 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
3474 struct debugtag *tag;
3477 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
3479 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
3480 tag = &dbg_layer[0];
3481 dbg = &AcpiDbgLayer;
3483 tag = &dbg_level[0];
3484 dbg = &AcpiDbgLevel;
3487 /* Get old values if this is a get request. */
3488 ACPI_SERIAL_BEGIN(acpi);
3490 sbuf_cpy(&sb, "NONE");
3491 } else if (req->newptr == NULL) {
3492 for (; tag->name != NULL; tag++) {
3493 if ((*dbg & tag->value) == tag->value)
3494 sbuf_printf(&sb, "%s ", tag->name);
3500 /* Copy out the old values to the user. */
3501 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
3504 /* If the user is setting a string, parse it. */
3505 if (error == 0 && req->newptr != NULL) {
3507 ksetenv((char *)oidp->oid_arg1, (char *)req->newptr);
3508 acpi_set_debugging(NULL);
3510 ACPI_SERIAL_END(acpi);
3515 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
3516 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
3517 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
3518 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3519 #endif /* ACPI_DEBUG */
3522 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS)
3527 old = acpi_debug_objects;
3528 error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req);
3529 if (error != 0 || req->newptr == NULL)
3531 if (old == acpi_debug_objects || (old && acpi_debug_objects))
3534 ACPI_SERIAL_BEGIN(acpi);
3535 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
3536 ACPI_SERIAL_END(acpi);
3543 acpi_parse_interfaces(char *str, struct acpi_interface *iface)
3550 while (isspace(*p) || *p == ',')
3555 p = kstrdup(p, M_TEMP);
3556 for (i = 0; i < len; i++)
3561 if (isspace(p[i]) || p[i] == '\0')
3564 i += strlen(p + i) + 1;
3571 iface->data = kmalloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK);
3575 if (isspace(p[i]) || p[i] == '\0')
3578 iface->data[j] = p + i;
3579 i += strlen(p + i) + 1;
3587 acpi_free_interfaces(struct acpi_interface *iface)
3589 kfree(iface->data[0], M_TEMP);
3590 kfree(iface->data, M_TEMP);
3594 acpi_reset_interfaces(device_t dev)
3596 struct acpi_interface list;
3600 if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) {
3601 for (i = 0; i < list.num; i++) {
3602 status = AcpiInstallInterface(list.data[i]);
3603 if (ACPI_FAILURE(status))
3605 "failed to install _OSI(\"%s\"): %s\n",
3606 list.data[i], AcpiFormatException(status));
3607 else if (bootverbose)
3608 device_printf(dev, "installed _OSI(\"%s\")\n",
3611 acpi_free_interfaces(&list);
3613 if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) {
3614 for (i = 0; i < list.num; i++) {
3615 status = AcpiRemoveInterface(list.data[i]);
3616 if (ACPI_FAILURE(status))
3618 "failed to remove _OSI(\"%s\"): %s\n",
3619 list.data[i], AcpiFormatException(status));
3620 else if (bootverbose)
3621 device_printf(dev, "removed _OSI(\"%s\")\n",
3624 acpi_free_interfaces(&list);
3629 acpi_pm_func(u_long cmd, void *arg, ...)
3631 int state, acpi_state;
3633 struct acpi_softc *sc;
3638 case POWER_CMD_SUSPEND:
3639 sc = (struct acpi_softc *)arg;
3646 state = va_arg(ap, int);
3650 case POWER_SLEEP_STATE_STANDBY:
3651 acpi_state = sc->acpi_standby_sx;
3653 case POWER_SLEEP_STATE_SUSPEND:
3654 acpi_state = sc->acpi_suspend_sx;
3656 case POWER_SLEEP_STATE_HIBERNATE:
3657 acpi_state = ACPI_STATE_S4;
3664 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
3677 acpi_pm_register(void *arg)
3679 if (!cold || resource_disabled("acpi", 0))
3682 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3685 SYSINIT(power, SI_BOOT2_KLD, SI_ORDER_ANY, acpi_pm_register, 0);