2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
4 * Copyright (c) 2000, 2001 Michael Smith
5 * Copyright (c) 2000 BSDi
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
34 #include "opt_device_numa.h"
36 #include <sys/param.h>
37 #include <sys/kernel.h>
39 #include <sys/fcntl.h>
40 #include <sys/malloc.h>
41 #include <sys/module.h>
44 #include <sys/ioccom.h>
45 #include <sys/reboot.h>
46 #include <sys/sysctl.h>
47 #include <sys/ctype.h>
48 #include <sys/linker.h>
49 #include <sys/power.h>
51 #include <sys/sched.h>
53 #include <sys/timetc.h>
55 #if defined(__i386__) || defined(__amd64__)
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 /* Global mutex for locking access to the ACPI subsystem. */
99 struct mtx acpi_mutex;
100 struct callout acpi_sleep_timer;
102 /* Bitmap of device quirks. */
105 /* Supported sleep states. */
106 static BOOLEAN acpi_sleep_states[ACPI_S_STATE_COUNT];
108 static void acpi_lookup(void *arg, const char *name, device_t *dev);
109 static int acpi_modevent(struct module *mod, int event, void *junk);
110 static int acpi_probe(device_t dev);
111 static int acpi_attach(device_t dev);
112 static int acpi_suspend(device_t dev);
113 static int acpi_resume(device_t dev);
114 static int acpi_shutdown(device_t dev);
115 static device_t acpi_add_child(device_t bus, u_int order, const char *name,
117 static int acpi_print_child(device_t bus, device_t child);
118 static void acpi_probe_nomatch(device_t bus, device_t child);
119 static void acpi_driver_added(device_t dev, driver_t *driver);
120 static int acpi_read_ivar(device_t dev, device_t child, int index,
122 static int acpi_write_ivar(device_t dev, device_t child, int index,
124 static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
125 static void acpi_reserve_resources(device_t dev);
126 static int acpi_sysres_alloc(device_t dev);
127 static int acpi_set_resource(device_t dev, device_t child, int type,
128 int rid, rman_res_t start, rman_res_t count);
129 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
130 int type, int *rid, rman_res_t start, rman_res_t end,
131 rman_res_t count, u_int flags);
132 static int acpi_adjust_resource(device_t bus, device_t child, int type,
133 struct resource *r, rman_res_t start, rman_res_t end);
134 static int acpi_release_resource(device_t bus, device_t child, int type,
135 int rid, struct resource *r);
136 static void acpi_delete_resource(device_t bus, device_t child, int type,
138 static uint32_t acpi_isa_get_logicalid(device_t dev);
139 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
140 static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
141 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
142 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
144 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
145 void *context, void **retval);
146 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
147 int max_depth, acpi_scan_cb_t user_fn, void *arg);
148 static int acpi_set_powerstate(device_t child, int state);
149 static int acpi_isa_pnp_probe(device_t bus, device_t child,
150 struct isa_pnp_id *ids);
151 static void acpi_probe_children(device_t bus);
152 static void acpi_probe_order(ACPI_HANDLE handle, int *order);
153 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
154 void *context, void **status);
155 static void acpi_sleep_enable(void *arg);
156 static ACPI_STATUS acpi_sleep_disable(struct acpi_softc *sc);
157 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
158 static void acpi_shutdown_final(void *arg, int howto);
159 static void acpi_enable_fixed_events(struct acpi_softc *sc);
160 static BOOLEAN acpi_has_hid(ACPI_HANDLE handle);
161 static void acpi_resync_clock(struct acpi_softc *sc);
162 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
163 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
164 static int acpi_wake_prep_walk(int sstate);
165 static int acpi_wake_sysctl_walk(device_t dev);
166 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
167 static void acpi_system_eventhandler_sleep(void *arg, int state);
168 static void acpi_system_eventhandler_wakeup(void *arg, int state);
169 static int acpi_sname2sstate(const char *sname);
170 static const char *acpi_sstate2sname(int sstate);
171 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
172 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
173 static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS);
174 static int acpi_pm_func(u_long cmd, void *arg, ...);
175 static int acpi_child_location_str_method(device_t acdev, device_t child,
176 char *buf, size_t buflen);
177 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
178 char *buf, size_t buflen);
179 #if defined(__i386__) || defined(__amd64__)
180 static void acpi_enable_pcie(void);
182 static void acpi_hint_device_unit(device_t acdev, device_t child,
183 const char *name, int *unitp);
184 static void acpi_reset_interfaces(device_t dev);
186 static device_method_t acpi_methods[] = {
187 /* Device interface */
188 DEVMETHOD(device_probe, acpi_probe),
189 DEVMETHOD(device_attach, acpi_attach),
190 DEVMETHOD(device_shutdown, acpi_shutdown),
191 DEVMETHOD(device_detach, bus_generic_detach),
192 DEVMETHOD(device_suspend, acpi_suspend),
193 DEVMETHOD(device_resume, acpi_resume),
196 DEVMETHOD(bus_add_child, acpi_add_child),
197 DEVMETHOD(bus_print_child, acpi_print_child),
198 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
199 DEVMETHOD(bus_driver_added, acpi_driver_added),
200 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
201 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
202 DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
203 DEVMETHOD(bus_set_resource, acpi_set_resource),
204 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
205 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
206 DEVMETHOD(bus_adjust_resource, acpi_adjust_resource),
207 DEVMETHOD(bus_release_resource, acpi_release_resource),
208 DEVMETHOD(bus_delete_resource, acpi_delete_resource),
209 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
210 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
211 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
212 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
213 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
214 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
215 DEVMETHOD(bus_hint_device_unit, acpi_hint_device_unit),
216 DEVMETHOD(bus_get_cpus, acpi_get_cpus),
217 DEVMETHOD(bus_get_domain, acpi_get_domain),
220 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
221 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
222 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
223 DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
226 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
231 static driver_t acpi_driver = {
234 sizeof(struct acpi_softc),
237 static devclass_t acpi_devclass;
238 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
239 MODULE_VERSION(acpi, 1);
241 ACPI_SERIAL_DECL(acpi, "ACPI root bus");
243 /* Local pools for managing system resources for ACPI child devices. */
244 static struct rman acpi_rman_io, acpi_rman_mem;
246 #define ACPI_MINIMUM_AWAKETIME 5
248 /* Holds the description of the acpi0 device. */
249 static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
251 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
252 static char acpi_ca_version[12];
253 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
254 acpi_ca_version, 0, "Version of Intel ACPI-CA");
257 * Allow overriding _OSI methods.
259 static char acpi_install_interface[256];
260 TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface,
261 sizeof(acpi_install_interface));
262 static char acpi_remove_interface[256];
263 TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface,
264 sizeof(acpi_remove_interface));
266 /* Allow users to dump Debug objects without ACPI debugger. */
267 static int acpi_debug_objects;
268 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects);
269 SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects,
270 CTLFLAG_RW | CTLTYPE_INT, NULL, 0, acpi_debug_objects_sysctl, "I",
271 "Enable Debug objects");
273 /* Allow the interpreter to ignore common mistakes in BIOS. */
274 static int acpi_interpreter_slack = 1;
275 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack);
276 SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RDTUN,
277 &acpi_interpreter_slack, 1, "Turn on interpreter slack mode.");
279 /* Ignore register widths set by FADT and use default widths instead. */
280 static int acpi_ignore_reg_width = 1;
281 TUNABLE_INT("debug.acpi.default_register_width", &acpi_ignore_reg_width);
282 SYSCTL_INT(_debug_acpi, OID_AUTO, default_register_width, CTLFLAG_RDTUN,
283 &acpi_ignore_reg_width, 1, "Ignore register widths set by FADT");
285 /* Allow users to override quirks. */
286 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
288 static int acpi_susp_bounce;
289 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
290 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
293 * ACPI can only be loaded as a module by the loader; activating it after
294 * system bootstrap time is not useful, and can be fatal to the system.
295 * It also cannot be unloaded, since the entire system bus hierarchy hangs
299 acpi_modevent(struct module *mod, int event, void *junk)
304 printf("The ACPI driver cannot be loaded after boot.\n");
309 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
319 * Perform early initialization.
324 static int started = 0;
328 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
330 /* Only run the startup code once. The MADT driver also calls this. */
332 return_VALUE (AE_OK);
336 * Initialize the ACPICA subsystem.
338 if (ACPI_FAILURE(status = AcpiInitializeSubsystem())) {
339 printf("ACPI: Could not initialize Subsystem: %s\n",
340 AcpiFormatException(status));
341 return_VALUE (status);
345 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
346 * if more tables exist.
348 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
349 printf("ACPI: Table initialisation failed: %s\n",
350 AcpiFormatException(status));
351 return_VALUE (status);
354 /* Set up any quirks we have for this system. */
355 if (acpi_quirks == ACPI_Q_OK)
356 acpi_table_quirks(&acpi_quirks);
358 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
359 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
360 acpi_quirks &= ~ACPI_Q_BROKEN;
361 if (acpi_quirks & ACPI_Q_BROKEN) {
362 printf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
366 return_VALUE (status);
370 * Detect ACPI and perform early initialisation.
375 ACPI_TABLE_RSDP *rsdp;
376 ACPI_TABLE_HEADER *rsdt;
377 ACPI_PHYSICAL_ADDRESS paddr;
380 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
385 /* Check that we haven't been disabled with a hint. */
386 if (resource_disabled("acpi", 0))
389 /* Check for other PM systems. */
390 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
391 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
392 printf("ACPI identify failed, other PM system enabled.\n");
396 /* Initialize root tables. */
397 if (ACPI_FAILURE(acpi_Startup())) {
398 printf("ACPI: Try disabling either ACPI or apic support.\n");
402 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
403 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
405 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
406 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
408 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
409 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
411 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
413 sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN);
414 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
417 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
421 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
423 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
429 * Fetch some descriptive data from ACPI to put in our attach message.
432 acpi_probe(device_t dev)
435 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
437 device_set_desc(dev, acpi_desc);
439 return_VALUE (BUS_PROBE_NOWILDCARD);
443 acpi_attach(device_t dev)
445 struct acpi_softc *sc;
452 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
454 sc = device_get_softc(dev);
456 callout_init(&sc->susp_force_to, 1);
460 /* Initialize resource manager. */
461 acpi_rman_io.rm_type = RMAN_ARRAY;
462 acpi_rman_io.rm_start = 0;
463 acpi_rman_io.rm_end = 0xffff;
464 acpi_rman_io.rm_descr = "ACPI I/O ports";
465 if (rman_init(&acpi_rman_io) != 0)
466 panic("acpi rman_init IO ports failed");
467 acpi_rman_mem.rm_type = RMAN_ARRAY;
468 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
469 if (rman_init(&acpi_rman_mem) != 0)
470 panic("acpi rman_init memory failed");
472 /* Initialise the ACPI mutex */
473 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
476 * Set the globals from our tunables. This is needed because ACPI-CA
477 * uses UINT8 for some values and we have no tunable_byte.
479 AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE;
480 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
481 AcpiGbl_UseDefaultRegisterWidths = acpi_ignore_reg_width ? TRUE : FALSE;
485 * Disable all debugging layers and levels.
491 /* Override OS interfaces if the user requested. */
492 acpi_reset_interfaces(dev);
494 /* Load ACPI name space. */
495 status = AcpiLoadTables();
496 if (ACPI_FAILURE(status)) {
497 device_printf(dev, "Could not load Namespace: %s\n",
498 AcpiFormatException(status));
502 #if defined(__i386__) || defined(__amd64__)
503 /* Handle MCFG table if present. */
508 * Note that some systems (specifically, those with namespace evaluation
509 * issues that require the avoidance of parts of the namespace) must
510 * avoid running _INI and _STA on everything, as well as dodging the final
513 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
515 * XXX We should arrange for the object init pass after we have attached
516 * all our child devices, but on many systems it works here.
519 if (testenv("debug.acpi.avoid"))
520 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
522 /* Bring the hardware and basic handlers online. */
523 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
524 device_printf(dev, "Could not enable ACPI: %s\n",
525 AcpiFormatException(status));
530 * Call the ECDT probe function to provide EC functionality before
531 * the namespace has been evaluated.
533 * XXX This happens before the sysresource devices have been probed and
534 * attached so its resources come from nexus0. In practice, this isn't
535 * a problem but should be addressed eventually.
537 acpi_ec_ecdt_probe(dev);
539 /* Bring device objects and regions online. */
540 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
541 device_printf(dev, "Could not initialize ACPI objects: %s\n",
542 AcpiFormatException(status));
547 * Setup our sysctl tree.
549 * XXX: This doesn't check to make sure that none of these fail.
551 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
552 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
553 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
554 device_get_name(dev), CTLFLAG_RD, 0, "");
555 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
556 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
557 0, 0, acpi_supported_sleep_state_sysctl, "A",
558 "List supported ACPI sleep states.");
559 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
560 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
561 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A",
562 "Power button ACPI sleep state.");
563 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
564 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
565 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A",
566 "Sleep button ACPI sleep state.");
567 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
568 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
569 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A",
570 "Lid ACPI sleep state. Set to S3 if you want to suspend your laptop when close the Lid.");
571 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
572 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
573 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
574 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
575 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
576 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
577 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
578 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
579 "sleep delay in seconds");
580 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
581 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
582 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
583 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
584 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
585 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
586 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
587 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
588 OID_AUTO, "handle_reboot", CTLFLAG_RW,
589 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
592 * Default to 1 second before sleeping to give some machines time to
595 sc->acpi_sleep_delay = 1;
597 sc->acpi_verbose = 1;
598 if ((env = kern_getenv("hw.acpi.verbose")) != NULL) {
599 if (strcmp(env, "0") != 0)
600 sc->acpi_verbose = 1;
604 /* Only enable reboot by default if the FADT says it is available. */
605 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER)
606 sc->acpi_handle_reboot = 1;
608 #if !ACPI_REDUCED_HARDWARE
609 /* Only enable S4BIOS by default if the FACS says it is available. */
610 if (AcpiGbl_FACS != NULL && AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
614 /* Probe all supported sleep states. */
615 acpi_sleep_states[ACPI_STATE_S0] = TRUE;
616 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
617 if (ACPI_SUCCESS(AcpiEvaluateObject(ACPI_ROOT_OBJECT,
618 __DECONST(char *, AcpiGbl_SleepStateNames[state]), NULL, NULL)) &&
619 ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
620 acpi_sleep_states[state] = TRUE;
623 * Dispatch the default sleep state to devices. The lid switch is set
624 * to UNKNOWN by default to avoid surprising users.
626 sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ?
627 ACPI_STATE_S5 : ACPI_STATE_UNKNOWN;
628 sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN;
629 sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ?
630 ACPI_STATE_S1 : ACPI_STATE_UNKNOWN;
631 sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ?
632 ACPI_STATE_S3 : ACPI_STATE_UNKNOWN;
634 /* Pick the first valid sleep state for the sleep button default. */
635 sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN;
636 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
637 if (acpi_sleep_states[state]) {
638 sc->acpi_sleep_button_sx = state;
642 acpi_enable_fixed_events(sc);
645 * Scan the namespace and attach/initialise children.
648 /* Register our shutdown handler. */
649 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
653 * Register our acpi event handlers.
654 * XXX should be configurable eg. via userland policy manager.
656 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
657 sc, ACPI_EVENT_PRI_LAST);
658 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
659 sc, ACPI_EVENT_PRI_LAST);
661 /* Flag our initial states. */
662 sc->acpi_enabled = TRUE;
663 sc->acpi_sstate = ACPI_STATE_S0;
664 sc->acpi_sleep_disabled = TRUE;
666 /* Create the control device */
667 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
669 sc->acpi_dev_t->si_drv1 = sc;
671 if ((error = acpi_machdep_init(dev)))
674 /* Register ACPI again to pass the correct argument of pm_func. */
675 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
677 if (!acpi_disabled("bus")) {
678 EVENTHANDLER_REGISTER(dev_lookup, acpi_lookup, NULL, 1000);
679 acpi_probe_children(dev);
682 /* Update all GPEs and enable runtime GPEs. */
683 status = AcpiUpdateAllGpes();
684 if (ACPI_FAILURE(status))
685 device_printf(dev, "Could not update all GPEs: %s\n",
686 AcpiFormatException(status));
688 /* Allow sleep request after a while. */
689 callout_init_mtx(&acpi_sleep_timer, &acpi_mutex, 0);
690 callout_reset(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME,
691 acpi_sleep_enable, sc);
696 return_VALUE (error);
700 acpi_set_power_children(device_t dev, int state)
704 int dstate, i, numdevs;
706 if (device_get_children(dev, &devlist, &numdevs) != 0)
710 * Retrieve and set D-state for the sleep state if _SxD is present.
711 * Skip children who aren't attached since they are handled separately.
713 for (i = 0; i < numdevs; i++) {
716 if (device_is_attached(child) &&
717 acpi_device_pwr_for_sleep(dev, child, &dstate) == 0)
718 acpi_set_powerstate(child, dstate);
720 free(devlist, M_TEMP);
724 acpi_suspend(device_t dev)
730 error = bus_generic_suspend(dev);
732 acpi_set_power_children(dev, ACPI_STATE_D3);
738 acpi_resume(device_t dev)
743 acpi_set_power_children(dev, ACPI_STATE_D0);
745 return (bus_generic_resume(dev));
749 acpi_shutdown(device_t dev)
754 /* Allow children to shutdown first. */
755 bus_generic_shutdown(dev);
758 * Enable any GPEs that are able to power-on the system (i.e., RTC).
759 * Also, disable any that are not valid for this state (most).
761 acpi_wake_prep_walk(ACPI_STATE_S5);
767 * Handle a new device being added
770 acpi_add_child(device_t bus, u_int order, const char *name, int unit)
772 struct acpi_device *ad;
775 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
778 resource_list_init(&ad->ad_rl);
780 child = device_add_child_ordered(bus, order, name, unit);
782 device_set_ivars(child, ad);
789 acpi_print_child(device_t bus, device_t child)
791 struct acpi_device *adev = device_get_ivars(child);
792 struct resource_list *rl = &adev->ad_rl;
795 retval += bus_print_child_header(bus, child);
796 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#jx");
797 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#jx");
798 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd");
799 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%jd");
800 if (device_get_flags(child))
801 retval += printf(" flags %#x", device_get_flags(child));
802 retval += bus_print_child_domain(bus, child);
803 retval += bus_print_child_footer(bus, child);
809 * If this device is an ACPI child but no one claimed it, attempt
810 * to power it off. We'll power it back up when a driver is added.
812 * XXX Disabled for now since many necessary devices (like fdc and
813 * ATA) don't claim the devices we created for them but still expect
814 * them to be powered up.
817 acpi_probe_nomatch(device_t bus, device_t child)
819 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
820 acpi_set_powerstate(child, ACPI_STATE_D3);
825 * If a new driver has a chance to probe a child, first power it up.
827 * XXX Disabled for now (see acpi_probe_nomatch for details).
830 acpi_driver_added(device_t dev, driver_t *driver)
832 device_t child, *devlist;
835 DEVICE_IDENTIFY(driver, dev);
836 if (device_get_children(dev, &devlist, &numdevs))
838 for (i = 0; i < numdevs; i++) {
840 if (device_get_state(child) == DS_NOTPRESENT) {
841 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
842 acpi_set_powerstate(child, ACPI_STATE_D0);
843 if (device_probe_and_attach(child) != 0)
844 acpi_set_powerstate(child, ACPI_STATE_D3);
846 device_probe_and_attach(child);
850 free(devlist, M_TEMP);
853 /* Location hint for devctl(8) */
855 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
858 struct acpi_device *dinfo = device_get_ivars(child);
862 if (dinfo->ad_handle) {
863 snprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
864 if (ACPI_SUCCESS(acpi_GetInteger(dinfo->ad_handle, "_PXM", &pxm))) {
865 snprintf(buf2, 32, " _PXM=%d", pxm);
866 strlcat(buf, buf2, buflen);
869 snprintf(buf, buflen, "unknown");
874 /* PnP information for devctl(8) */
876 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
879 struct acpi_device *dinfo = device_get_ivars(child);
880 ACPI_DEVICE_INFO *adinfo;
882 if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo))) {
883 snprintf(buf, buflen, "unknown");
887 snprintf(buf, buflen, "_HID=%s _UID=%lu",
888 (adinfo->Valid & ACPI_VALID_HID) ?
889 adinfo->HardwareId.String : "none",
890 (adinfo->Valid & ACPI_VALID_UID) ?
891 strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL);
898 * Handle per-device ivars
901 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
903 struct acpi_device *ad;
905 if ((ad = device_get_ivars(child)) == NULL) {
906 device_printf(child, "device has no ivars\n");
910 /* ACPI and ISA compatibility ivars */
912 case ACPI_IVAR_HANDLE:
913 *(ACPI_HANDLE *)result = ad->ad_handle;
915 case ACPI_IVAR_PRIVATE:
916 *(void **)result = ad->ad_private;
918 case ACPI_IVAR_FLAGS:
919 *(int *)result = ad->ad_flags;
921 case ISA_IVAR_VENDORID:
922 case ISA_IVAR_SERIAL:
923 case ISA_IVAR_COMPATID:
926 case ISA_IVAR_LOGICALID:
927 *(int *)result = acpi_isa_get_logicalid(child);
930 *(uint8_t*)result = (ad->ad_cls_class >> 16) & 0xff;
932 case PCI_IVAR_SUBCLASS:
933 *(uint8_t*)result = (ad->ad_cls_class >> 8) & 0xff;
935 case PCI_IVAR_PROGIF:
936 *(uint8_t*)result = (ad->ad_cls_class >> 0) & 0xff;
946 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
948 struct acpi_device *ad;
950 if ((ad = device_get_ivars(child)) == NULL) {
951 device_printf(child, "device has no ivars\n");
956 case ACPI_IVAR_HANDLE:
957 ad->ad_handle = (ACPI_HANDLE)value;
959 case ACPI_IVAR_PRIVATE:
960 ad->ad_private = (void *)value;
962 case ACPI_IVAR_FLAGS:
963 ad->ad_flags = (int)value;
966 panic("bad ivar write request (%d)", index);
974 * Handle child resource allocation/removal
976 static struct resource_list *
977 acpi_get_rlist(device_t dev, device_t child)
979 struct acpi_device *ad;
981 ad = device_get_ivars(child);
986 acpi_match_resource_hint(device_t dev, int type, long value)
988 struct acpi_device *ad = device_get_ivars(dev);
989 struct resource_list *rl = &ad->ad_rl;
990 struct resource_list_entry *rle;
992 STAILQ_FOREACH(rle, rl, link) {
993 if (rle->type != type)
995 if (rle->start <= value && rle->end >= value)
1002 * Wire device unit numbers based on resource matches in hints.
1005 acpi_hint_device_unit(device_t acdev, device_t child, const char *name,
1010 int line, matches, unit;
1013 * Iterate over all the hints for the devices with the specified
1014 * name to see if one's resources are a subset of this device.
1018 if (resource_find_dev(&line, name, &unit, "at", NULL) != 0)
1021 /* Must have an "at" for acpi or isa. */
1022 resource_string_value(name, unit, "at", &s);
1023 if (!(strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 ||
1024 strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0))
1028 * Check for matching resources. We must have at least one match.
1029 * Since I/O and memory resources cannot be shared, if we get a
1030 * match on either of those, ignore any mismatches in IRQs or DRQs.
1032 * XXX: We may want to revisit this to be more lenient and wire
1033 * as long as it gets one match.
1036 if (resource_long_value(name, unit, "port", &value) == 0) {
1038 * Floppy drive controllers are notorious for having a
1039 * wide variety of resources not all of which include the
1040 * first port that is specified by the hint (typically
1041 * 0x3f0) (see the comment above fdc_isa_alloc_resources()
1042 * in fdc_isa.c). However, they do all seem to include
1043 * port + 2 (e.g. 0x3f2) so for a floppy device, look for
1044 * 'value + 2' in the port resources instead of the hint
1047 if (strcmp(name, "fdc") == 0)
1049 if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value))
1054 if (resource_long_value(name, unit, "maddr", &value) == 0) {
1055 if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value))
1062 if (resource_long_value(name, unit, "irq", &value) == 0) {
1063 if (acpi_match_resource_hint(child, SYS_RES_IRQ, value))
1068 if (resource_long_value(name, unit, "drq", &value) == 0) {
1069 if (acpi_match_resource_hint(child, SYS_RES_DRQ, value))
1077 /* We have a winner! */
1085 * Fetch the NUMA domain for a device by mapping the value returned by
1086 * _PXM to a NUMA domain. If the device does not have a _PXM method,
1087 * -2 is returned. If any other error occurs, -1 is returned.
1090 acpi_parse_pxm(device_t dev)
1097 handle = acpi_get_handle(dev);
1100 status = acpi_GetInteger(handle, "_PXM", &pxm);
1101 if (ACPI_SUCCESS(status))
1102 return (acpi_map_pxm_to_vm_domainid(pxm));
1103 if (status == AE_NOT_FOUND)
1110 acpi_get_cpus(device_t dev, device_t child, enum cpu_sets op, size_t setsize,
1115 d = acpi_parse_pxm(child);
1117 return (bus_generic_get_cpus(dev, child, op, setsize, cpuset));
1121 if (setsize != sizeof(cpuset_t))
1123 *cpuset = cpuset_domain[d];
1126 error = bus_generic_get_cpus(dev, child, op, setsize, cpuset);
1129 if (setsize != sizeof(cpuset_t))
1131 CPU_AND(cpuset, &cpuset_domain[d]);
1134 return (bus_generic_get_cpus(dev, child, op, setsize, cpuset));
1139 * Fetch the NUMA domain for the given device 'dev'.
1141 * If a device has a _PXM method, map that to a NUMA domain.
1142 * Otherwise, pass the request up to the parent.
1143 * If there's no matching domain or the domain cannot be
1144 * determined, return ENOENT.
1147 acpi_get_domain(device_t dev, device_t child, int *domain)
1151 d = acpi_parse_pxm(child);
1159 /* No _PXM node; go up a level */
1160 return (bus_generic_get_domain(dev, child, domain));
1164 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
1165 * duplicates, we merge any in the sysresource attach routine.
1168 acpi_sysres_alloc(device_t dev)
1170 struct resource *res;
1171 struct resource_list *rl;
1172 struct resource_list_entry *rle;
1174 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1179 * Probe/attach any sysresource devices. This would be unnecessary if we
1180 * had multi-pass probe/attach.
1182 if (device_get_children(dev, &children, &child_count) != 0)
1184 for (i = 0; i < child_count; i++) {
1185 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1186 device_probe_and_attach(children[i]);
1188 free(children, M_TEMP);
1190 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
1191 STAILQ_FOREACH(rle, rl, link) {
1192 if (rle->res != NULL) {
1193 device_printf(dev, "duplicate resource for %jx\n", rle->start);
1197 /* Only memory and IO resources are valid here. */
1198 switch (rle->type) {
1199 case SYS_RES_IOPORT:
1202 case SYS_RES_MEMORY:
1203 rm = &acpi_rman_mem;
1209 /* Pre-allocate resource and add to our rman pool. */
1210 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1211 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
1213 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1215 } else if (bootverbose)
1216 device_printf(dev, "reservation of %jx, %jx (%d) failed\n",
1217 rle->start, rle->count, rle->type);
1222 static char *pcilink_ids[] = { "PNP0C0F", NULL };
1223 static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1226 * Reserve declared resources for devices found during attach once system
1227 * resources have been allocated.
1230 acpi_reserve_resources(device_t dev)
1232 struct resource_list_entry *rle;
1233 struct resource_list *rl;
1234 struct acpi_device *ad;
1235 struct acpi_softc *sc;
1239 sc = device_get_softc(dev);
1240 if (device_get_children(dev, &children, &child_count) != 0)
1242 for (i = 0; i < child_count; i++) {
1243 ad = device_get_ivars(children[i]);
1246 /* Don't reserve system resources. */
1247 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1250 STAILQ_FOREACH(rle, rl, link) {
1252 * Don't reserve IRQ resources. There are many sticky things
1253 * to get right otherwise (e.g. IRQs for psm, atkbd, and HPET
1254 * when using legacy routing).
1256 if (rle->type == SYS_RES_IRQ)
1260 * Don't reserve the resource if it is already allocated.
1261 * The acpi_ec(4) driver can allocate its resources early
1262 * if ECDT is present.
1264 if (rle->res != NULL)
1268 * Try to reserve the resource from our parent. If this
1269 * fails because the resource is a system resource, just
1270 * let it be. The resource range is already reserved so
1271 * that other devices will not use it. If the driver
1272 * needs to allocate the resource, then
1273 * acpi_alloc_resource() will sub-alloc from the system
1276 resource_list_reserve(rl, dev, children[i], rle->type, &rle->rid,
1277 rle->start, rle->end, rle->count, 0);
1280 free(children, M_TEMP);
1281 sc->acpi_resources_reserved = 1;
1285 acpi_set_resource(device_t dev, device_t child, int type, int rid,
1286 rman_res_t start, rman_res_t count)
1288 struct acpi_softc *sc = device_get_softc(dev);
1289 struct acpi_device *ad = device_get_ivars(child);
1290 struct resource_list *rl = &ad->ad_rl;
1291 #if defined(__i386__) || defined(__amd64__)
1292 ACPI_DEVICE_INFO *devinfo;
1296 /* Ignore IRQ resources for PCI link devices. */
1297 if (type == SYS_RES_IRQ && ACPI_ID_PROBE(dev, child, pcilink_ids) != NULL)
1301 * Ignore most resources for PCI root bridges. Some BIOSes
1302 * incorrectly enumerate the memory ranges they decode as plain
1303 * memory resources instead of as ResourceProducer ranges. Other
1304 * BIOSes incorrectly list system resource entries for I/O ranges
1305 * under the PCI bridge. Do allow the one known-correct case on
1306 * x86 of a PCI bridge claiming the I/O ports used for PCI config
1309 #if defined(__i386__) || defined(__amd64__)
1310 if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) {
1311 if (ACPI_SUCCESS(AcpiGetObjectInfo(ad->ad_handle, &devinfo))) {
1312 if ((devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0) {
1313 if (!(type == SYS_RES_IOPORT && start == CONF1_ADDR_PORT)) {
1314 AcpiOsFree(devinfo);
1318 AcpiOsFree(devinfo);
1323 /* If the resource is already allocated, fail. */
1324 if (resource_list_busy(rl, type, rid))
1327 /* If the resource is already reserved, release it. */
1328 if (resource_list_reserved(rl, type, rid))
1329 resource_list_unreserve(rl, dev, child, type, rid);
1331 /* Add the resource. */
1332 end = (start + count - 1);
1333 resource_list_add(rl, type, rid, start, end, count);
1335 /* Don't reserve resources until the system resources are allocated. */
1336 if (!sc->acpi_resources_reserved)
1339 /* Don't reserve system resources. */
1340 if (ACPI_ID_PROBE(dev, child, sysres_ids) != NULL)
1344 * Don't reserve IRQ resources. There are many sticky things to
1345 * get right otherwise (e.g. IRQs for psm, atkbd, and HPET when
1346 * using legacy routing).
1348 if (type == SYS_RES_IRQ)
1352 * Reserve the resource.
1354 * XXX: Ignores failure for now. Failure here is probably a
1355 * BIOS/firmware bug?
1357 resource_list_reserve(rl, dev, child, type, &rid, start, end, count, 0);
1361 static struct resource *
1362 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
1363 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
1366 struct acpi_device *ad;
1367 struct resource_list_entry *rle;
1368 struct resource_list *rl;
1369 struct resource *res;
1370 int isdefault = RMAN_IS_DEFAULT_RANGE(start, end);
1373 * First attempt at allocating the resource. For direct children,
1374 * use resource_list_alloc() to handle reserved resources. For
1375 * other devices, pass the request up to our parent.
1377 if (bus == device_get_parent(child)) {
1378 ad = device_get_ivars(child);
1382 * Simulate the behavior of the ISA bus for direct children
1383 * devices. That is, if a non-default range is specified for
1384 * a resource that doesn't exist, use bus_set_resource() to
1385 * add the resource before allocating it. Note that these
1386 * resources will not be reserved.
1388 if (!isdefault && resource_list_find(rl, type, *rid) == NULL)
1389 resource_list_add(rl, type, *rid, start, end, count);
1390 res = resource_list_alloc(rl, bus, child, type, rid, start, end, count,
1392 if (res != NULL && type == SYS_RES_IRQ) {
1394 * Since bus_config_intr() takes immediate effect, we cannot
1395 * configure the interrupt associated with a device when we
1396 * parse the resources but have to defer it until a driver
1397 * actually allocates the interrupt via bus_alloc_resource().
1399 * XXX: Should we handle the lookup failing?
1401 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
1402 acpi_config_intr(child, &ares);
1406 * If this is an allocation of the "default" range for a given
1407 * RID, fetch the exact bounds for this resource from the
1408 * resource list entry to try to allocate the range from the
1409 * system resource regions.
1411 if (res == NULL && isdefault) {
1412 rle = resource_list_find(rl, type, *rid);
1420 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1421 start, end, count, flags);
1424 * If the first attempt failed and this is an allocation of a
1425 * specific range, try to satisfy the request via a suballocation
1426 * from our system resource regions.
1428 if (res == NULL && start + count - 1 == end)
1429 res = acpi_alloc_sysres(child, type, rid, start, end, count, flags);
1434 * Attempt to allocate a specific resource range from the system
1435 * resource ranges. Note that we only handle memory and I/O port
1439 acpi_alloc_sysres(device_t child, int type, int *rid, rman_res_t start,
1440 rman_res_t end, rman_res_t count, u_int flags)
1443 struct resource *res;
1446 case SYS_RES_IOPORT:
1449 case SYS_RES_MEMORY:
1450 rm = &acpi_rman_mem;
1456 KASSERT(start + count - 1 == end, ("wildcard resource range"));
1457 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1462 rman_set_rid(res, *rid);
1464 /* If requested, activate the resource using the parent's method. */
1465 if (flags & RF_ACTIVE)
1466 if (bus_activate_resource(child, type, *rid, res) != 0) {
1467 rman_release_resource(res);
1475 acpi_is_resource_managed(int type, struct resource *r)
1478 /* We only handle memory and IO resources through rman. */
1480 case SYS_RES_IOPORT:
1481 return (rman_is_region_manager(r, &acpi_rman_io));
1482 case SYS_RES_MEMORY:
1483 return (rman_is_region_manager(r, &acpi_rman_mem));
1489 acpi_adjust_resource(device_t bus, device_t child, int type, struct resource *r,
1490 rman_res_t start, rman_res_t end)
1493 if (acpi_is_resource_managed(type, r))
1494 return (rman_adjust_resource(r, start, end));
1495 return (bus_generic_adjust_resource(bus, child, type, r, start, end));
1499 acpi_release_resource(device_t bus, device_t child, int type, int rid,
1505 * If this resource belongs to one of our internal managers,
1506 * deactivate it and release it to the local pool.
1508 if (acpi_is_resource_managed(type, r)) {
1509 if (rman_get_flags(r) & RF_ACTIVE) {
1510 ret = bus_deactivate_resource(child, type, rid, r);
1514 return (rman_release_resource(r));
1517 return (bus_generic_rl_release_resource(bus, child, type, rid, r));
1521 acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1523 struct resource_list *rl;
1525 rl = acpi_get_rlist(bus, child);
1526 if (resource_list_busy(rl, type, rid)) {
1527 device_printf(bus, "delete_resource: Resource still owned by child"
1528 " (type=%d, rid=%d)\n", type, rid);
1531 resource_list_unreserve(rl, bus, child, type, rid);
1532 resource_list_delete(rl, type, rid);
1535 /* Allocate an IO port or memory resource, given its GAS. */
1537 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1538 struct resource **res, u_int flags)
1540 int error, res_type;
1543 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1546 /* We only support memory and IO spaces. */
1547 switch (gas->SpaceId) {
1548 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1549 res_type = SYS_RES_MEMORY;
1551 case ACPI_ADR_SPACE_SYSTEM_IO:
1552 res_type = SYS_RES_IOPORT;
1555 return (EOPNOTSUPP);
1559 * If the register width is less than 8, assume the BIOS author means
1560 * it is a bit field and just allocate a byte.
1562 if (gas->BitWidth && gas->BitWidth < 8)
1565 /* Validate the address after we're sure we support the space. */
1566 if (gas->Address == 0 || gas->BitWidth == 0)
1569 bus_set_resource(dev, res_type, *rid, gas->Address,
1571 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1576 bus_delete_resource(dev, res_type, *rid);
1581 /* Probe _HID and _CID for compatible ISA PNP ids. */
1583 acpi_isa_get_logicalid(device_t dev)
1585 ACPI_DEVICE_INFO *devinfo;
1589 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1591 /* Fetch and validate the HID. */
1592 if ((h = acpi_get_handle(dev)) == NULL ||
1593 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1596 pnpid = (devinfo->Valid & ACPI_VALID_HID) != 0 &&
1597 devinfo->HardwareId.Length >= ACPI_EISAID_STRING_SIZE ?
1598 PNP_EISAID(devinfo->HardwareId.String) : 0;
1599 AcpiOsFree(devinfo);
1601 return_VALUE (pnpid);
1605 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1607 ACPI_DEVICE_INFO *devinfo;
1608 ACPI_PNP_DEVICE_ID *ids;
1613 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1617 /* Fetch and validate the CID */
1618 if ((h = acpi_get_handle(dev)) == NULL ||
1619 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1622 if ((devinfo->Valid & ACPI_VALID_CID) == 0) {
1623 AcpiOsFree(devinfo);
1627 if (devinfo->CompatibleIdList.Count < count)
1628 count = devinfo->CompatibleIdList.Count;
1629 ids = devinfo->CompatibleIdList.Ids;
1630 for (i = 0, valid = 0; i < count; i++)
1631 if (ids[i].Length >= ACPI_EISAID_STRING_SIZE &&
1632 strncmp(ids[i].String, "PNP", 3) == 0) {
1633 *pnpid++ = PNP_EISAID(ids[i].String);
1636 AcpiOsFree(devinfo);
1638 return_VALUE (valid);
1642 acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1648 h = acpi_get_handle(dev);
1649 if (ids == NULL || h == NULL)
1651 t = acpi_get_type(dev);
1652 if (t != ACPI_TYPE_DEVICE && t != ACPI_TYPE_PROCESSOR)
1655 /* Try to match one of the array of IDs with a HID or CID. */
1656 for (i = 0; ids[i] != NULL; i++) {
1657 if (acpi_MatchHid(h, ids[i]))
1664 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1665 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1670 h = ACPI_ROOT_OBJECT;
1671 else if ((h = acpi_get_handle(dev)) == NULL)
1672 return (AE_BAD_PARAMETER);
1673 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1677 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1679 struct acpi_softc *sc;
1684 handle = acpi_get_handle(dev);
1687 * XXX If we find these devices, don't try to power them down.
1688 * The serial and IRDA ports on my T23 hang the system when
1689 * set to D3 and it appears that such legacy devices may
1690 * need special handling in their drivers.
1692 if (dstate == NULL || handle == NULL ||
1693 acpi_MatchHid(handle, "PNP0500") ||
1694 acpi_MatchHid(handle, "PNP0501") ||
1695 acpi_MatchHid(handle, "PNP0502") ||
1696 acpi_MatchHid(handle, "PNP0510") ||
1697 acpi_MatchHid(handle, "PNP0511"))
1701 * Override next state with the value from _SxD, if present.
1702 * Note illegal _S0D is evaluated because some systems expect this.
1704 sc = device_get_softc(bus);
1705 snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1706 status = acpi_GetInteger(handle, sxd, dstate);
1707 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
1708 device_printf(dev, "failed to get %s on %s: %s\n", sxd,
1709 acpi_name(handle), AcpiFormatException(status));
1716 /* Callback arg for our implementation of walking the namespace. */
1717 struct acpi_device_scan_ctx {
1718 acpi_scan_cb_t user_fn;
1724 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1726 struct acpi_device_scan_ctx *ctx;
1727 device_t dev, old_dev;
1729 ACPI_OBJECT_TYPE type;
1732 * Skip this device if we think we'll have trouble with it or it is
1733 * the parent where the scan began.
1735 ctx = (struct acpi_device_scan_ctx *)arg;
1736 if (acpi_avoid(h) || h == ctx->parent)
1739 /* If this is not a valid device type (e.g., a method), skip it. */
1740 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1742 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1743 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1747 * Call the user function with the current device. If it is unchanged
1748 * afterwards, return. Otherwise, we update the handle to the new dev.
1750 old_dev = acpi_get_device(h);
1752 status = ctx->user_fn(h, &dev, level, ctx->arg);
1753 if (ACPI_FAILURE(status) || old_dev == dev)
1756 /* Remove the old child and its connection to the handle. */
1757 if (old_dev != NULL) {
1758 device_delete_child(device_get_parent(old_dev), old_dev);
1759 AcpiDetachData(h, acpi_fake_objhandler);
1762 /* Recreate the handle association if the user created a device. */
1764 AcpiAttachData(h, acpi_fake_objhandler, dev);
1770 acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1771 acpi_scan_cb_t user_fn, void *arg)
1774 struct acpi_device_scan_ctx ctx;
1776 if (acpi_disabled("children"))
1780 h = ACPI_ROOT_OBJECT;
1781 else if ((h = acpi_get_handle(dev)) == NULL)
1782 return (AE_BAD_PARAMETER);
1783 ctx.user_fn = user_fn;
1786 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1787 acpi_device_scan_cb, NULL, &ctx, NULL));
1791 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1792 * device power states since it's close enough to ACPI.
1795 acpi_set_powerstate(device_t child, int state)
1800 h = acpi_get_handle(child);
1801 if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX)
1806 /* Ignore errors if the power methods aren't present. */
1807 status = acpi_pwr_switch_consumer(h, state);
1808 if (ACPI_SUCCESS(status)) {
1810 device_printf(child, "set ACPI power state D%d on %s\n",
1811 state, acpi_name(h));
1812 } else if (status != AE_NOT_FOUND)
1813 device_printf(child,
1814 "failed to set ACPI power state D%d on %s: %s\n", state,
1815 acpi_name(h), AcpiFormatException(status));
1821 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1823 int result, cid_count, i;
1824 uint32_t lid, cids[8];
1826 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1829 * ISA-style drivers attached to ACPI may persist and
1830 * probe manually if we return ENOENT. We never want
1831 * that to happen, so don't ever return it.
1835 /* Scan the supplied IDs for a match */
1836 lid = acpi_isa_get_logicalid(child);
1837 cid_count = acpi_isa_get_compatid(child, cids, 8);
1838 while (ids && ids->ip_id) {
1839 if (lid == ids->ip_id) {
1843 for (i = 0; i < cid_count; i++) {
1844 if (cids[i] == ids->ip_id) {
1853 if (result == 0 && ids->ip_desc)
1854 device_set_desc(child, ids->ip_desc);
1856 return_VALUE (result);
1859 #if defined(__i386__) || defined(__amd64__)
1861 * Look for a MCFG table. If it is present, use the settings for
1862 * domain (segment) 0 to setup PCI config space access via the memory
1866 acpi_enable_pcie(void)
1868 ACPI_TABLE_HEADER *hdr;
1869 ACPI_MCFG_ALLOCATION *alloc, *end;
1872 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1873 if (ACPI_FAILURE(status))
1876 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1877 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1878 while (alloc < end) {
1879 if (alloc->PciSegment == 0) {
1880 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1881 alloc->EndBusNumber);
1890 * Scan all of the ACPI namespace and attach child devices.
1892 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1893 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1894 * However, in violation of the spec, some systems place their PCI link
1895 * devices in \, so we have to walk the whole namespace. We check the
1896 * type of namespace nodes, so this should be ok.
1899 acpi_probe_children(device_t bus)
1902 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1905 * Scan the namespace and insert placeholders for all the devices that
1906 * we find. We also probe/attach any early devices.
1908 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1909 * we want to create nodes for all devices, not just those that are
1910 * currently present. (This assumes that we don't want to create/remove
1911 * devices as they appear, which might be smarter.)
1913 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1914 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
1917 /* Pre-allocate resources for our rman from any sysresource devices. */
1918 acpi_sysres_alloc(bus);
1920 /* Reserve resources already allocated to children. */
1921 acpi_reserve_resources(bus);
1923 /* Create any static children by calling device identify methods. */
1924 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1925 bus_generic_probe(bus);
1927 /* Probe/attach all children, created statically and from the namespace. */
1928 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "acpi bus_generic_attach\n"));
1929 bus_generic_attach(bus);
1931 /* Attach wake sysctls. */
1932 acpi_wake_sysctl_walk(bus);
1934 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1939 * Determine the probe order for a given device.
1942 acpi_probe_order(ACPI_HANDLE handle, int *order)
1944 ACPI_OBJECT_TYPE type;
1948 * 1. I/O port and memory system resource holders
1949 * 2. Clocks and timers (to handle early accesses)
1950 * 3. Embedded controllers (to handle early accesses)
1951 * 4. PCI Link Devices
1953 AcpiGetType(handle, &type);
1954 if (type == ACPI_TYPE_PROCESSOR)
1956 else if (acpi_MatchHid(handle, "PNP0C01") ||
1957 acpi_MatchHid(handle, "PNP0C02"))
1959 else if (acpi_MatchHid(handle, "PNP0100") ||
1960 acpi_MatchHid(handle, "PNP0103") ||
1961 acpi_MatchHid(handle, "PNP0B00"))
1963 else if (acpi_MatchHid(handle, "PNP0C09"))
1965 else if (acpi_MatchHid(handle, "PNP0C0F"))
1970 * Evaluate a child device and determine whether we might attach a device to
1974 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1976 ACPI_DEVICE_INFO *devinfo;
1977 struct acpi_device *ad;
1978 struct acpi_prw_data prw;
1979 ACPI_OBJECT_TYPE type;
1981 device_t bus, child;
1985 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1987 if (acpi_disabled("children"))
1988 return_ACPI_STATUS (AE_OK);
1990 /* Skip this device if we think we'll have trouble with it. */
1991 if (acpi_avoid(handle))
1992 return_ACPI_STATUS (AE_OK);
1994 bus = (device_t)context;
1995 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1996 handle_str = acpi_name(handle);
1998 case ACPI_TYPE_DEVICE:
2000 * Since we scan from \, be sure to skip system scope objects.
2001 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
2002 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
2003 * during the initialization and \_TZ_ is to support Notify() on it.
2005 if (strcmp(handle_str, "\\_SB_") == 0 ||
2006 strcmp(handle_str, "\\_TZ_") == 0)
2008 if (acpi_parse_prw(handle, &prw) == 0)
2009 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
2012 * Ignore devices that do not have a _HID or _CID. They should
2013 * be discovered by other buses (e.g. the PCI bus driver).
2015 if (!acpi_has_hid(handle))
2018 case ACPI_TYPE_PROCESSOR:
2019 case ACPI_TYPE_THERMAL:
2020 case ACPI_TYPE_POWER:
2022 * Create a placeholder device for this node. Sort the
2023 * placeholder so that the probe/attach passes will run
2024 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
2025 * are reserved for special objects (i.e., system
2028 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
2029 order = level * 10 + ACPI_DEV_BASE_ORDER;
2030 acpi_probe_order(handle, &order);
2031 child = BUS_ADD_CHILD(bus, order, NULL, -1);
2035 /* Associate the handle with the device_t and vice versa. */
2036 acpi_set_handle(child, handle);
2037 AcpiAttachData(handle, acpi_fake_objhandler, child);
2040 * Check that the device is present. If it's not present,
2041 * leave it disabled (so that we have a device_t attached to
2042 * the handle, but we don't probe it).
2044 * XXX PCI link devices sometimes report "present" but not
2045 * "functional" (i.e. if disabled). Go ahead and probe them
2046 * anyway since we may enable them later.
2048 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
2049 /* Never disable PCI link devices. */
2050 if (acpi_MatchHid(handle, "PNP0C0F"))
2053 * Docking stations should remain enabled since the system
2054 * may be undocked at boot.
2056 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
2059 device_disable(child);
2064 * Get the device's resource settings and attach them.
2065 * Note that if the device has _PRS but no _CRS, we need
2066 * to decide when it's appropriate to try to configure the
2067 * device. Ignore the return value here; it's OK for the
2068 * device not to have any resources.
2070 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
2072 ad = device_get_ivars(child);
2073 ad->ad_cls_class = 0xffffff;
2074 if (ACPI_SUCCESS(AcpiGetObjectInfo(handle, &devinfo))) {
2075 if ((devinfo->Valid & ACPI_VALID_CLS) != 0 &&
2076 devinfo->ClassCode.Length >= ACPI_PCICLS_STRING_SIZE) {
2077 ad->ad_cls_class = strtoul(devinfo->ClassCode.String,
2080 AcpiOsFree(devinfo);
2086 return_ACPI_STATUS (AE_OK);
2090 * AcpiAttachData() requires an object handler but never uses it. This is a
2091 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
2094 acpi_fake_objhandler(ACPI_HANDLE h, void *data)
2099 acpi_shutdown_final(void *arg, int howto)
2101 struct acpi_softc *sc = (struct acpi_softc *)arg;
2106 * XXX Shutdown code should only run on the BSP (cpuid 0).
2107 * Some chipsets do not power off the system correctly if called from
2110 if ((howto & RB_POWEROFF) != 0) {
2111 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
2112 if (ACPI_FAILURE(status)) {
2113 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2114 AcpiFormatException(status));
2117 device_printf(sc->acpi_dev, "Powering system off\n");
2118 intr = intr_disable();
2119 status = AcpiEnterSleepState(ACPI_STATE_S5);
2120 if (ACPI_FAILURE(status)) {
2122 device_printf(sc->acpi_dev, "power-off failed - %s\n",
2123 AcpiFormatException(status));
2127 device_printf(sc->acpi_dev, "power-off failed - timeout\n");
2129 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) {
2130 /* Reboot using the reset register. */
2131 status = AcpiReset();
2132 if (ACPI_SUCCESS(status)) {
2134 device_printf(sc->acpi_dev, "reset failed - timeout\n");
2135 } else if (status != AE_NOT_EXIST)
2136 device_printf(sc->acpi_dev, "reset failed - %s\n",
2137 AcpiFormatException(status));
2138 } else if (sc->acpi_do_disable && panicstr == NULL) {
2140 * Only disable ACPI if the user requested. On some systems, writing
2141 * the disable value to SMI_CMD hangs the system.
2143 device_printf(sc->acpi_dev, "Shutting down\n");
2149 acpi_enable_fixed_events(struct acpi_softc *sc)
2151 static int first_time = 1;
2153 /* Enable and clear fixed events and install handlers. */
2154 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
2155 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
2156 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
2157 acpi_event_power_button_sleep, sc);
2159 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
2161 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
2162 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
2163 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
2164 acpi_event_sleep_button_sleep, sc);
2166 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
2173 * Returns true if the device is actually present and should
2174 * be attached to. This requires the present, enabled, UI-visible
2175 * and diagnostics-passed bits to be set.
2178 acpi_DeviceIsPresent(device_t dev)
2180 ACPI_DEVICE_INFO *devinfo;
2184 if ((h = acpi_get_handle(dev)) == NULL ||
2185 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2188 /* If no _STA method, must be present */
2189 present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
2190 ACPI_DEVICE_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2192 AcpiOsFree(devinfo);
2197 * Returns true if the battery is actually present and inserted.
2200 acpi_BatteryIsPresent(device_t dev)
2202 ACPI_DEVICE_INFO *devinfo;
2206 if ((h = acpi_get_handle(dev)) == NULL ||
2207 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2210 /* If no _STA method, must be present */
2211 present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
2212 ACPI_BATTERY_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2214 AcpiOsFree(devinfo);
2219 * Returns true if a device has at least one valid device ID.
2222 acpi_has_hid(ACPI_HANDLE h)
2224 ACPI_DEVICE_INFO *devinfo;
2228 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2232 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
2234 else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
2235 if (devinfo->CompatibleIdList.Count > 0)
2238 AcpiOsFree(devinfo);
2243 * Match a HID string against a handle
2246 acpi_MatchHid(ACPI_HANDLE h, const char *hid)
2248 ACPI_DEVICE_INFO *devinfo;
2252 if (hid == NULL || h == NULL ||
2253 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2257 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
2258 strcmp(hid, devinfo->HardwareId.String) == 0)
2260 else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
2261 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
2262 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
2268 AcpiOsFree(devinfo);
2273 * Return the handle of a named object within our scope, ie. that of (parent)
2274 * or one if its parents.
2277 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
2282 /* Walk back up the tree to the root */
2284 status = AcpiGetHandle(parent, path, &r);
2285 if (ACPI_SUCCESS(status)) {
2289 /* XXX Return error here? */
2290 if (status != AE_NOT_FOUND)
2292 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
2293 return (AE_NOT_FOUND);
2299 * Allocate a buffer with a preset data size.
2302 acpi_AllocBuffer(int size)
2306 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
2309 buf->Pointer = (void *)(buf + 1);
2314 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
2317 ACPI_OBJECT_LIST args;
2319 arg1.Type = ACPI_TYPE_INTEGER;
2320 arg1.Integer.Value = number;
2322 args.Pointer = &arg1;
2324 return (AcpiEvaluateObject(handle, path, &args, NULL));
2328 * Evaluate a path that should return an integer.
2331 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
2338 handle = ACPI_ROOT_OBJECT;
2341 * Assume that what we've been pointed at is an Integer object, or
2342 * a method that will return an Integer.
2344 buf.Pointer = ¶m;
2345 buf.Length = sizeof(param);
2346 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2347 if (ACPI_SUCCESS(status)) {
2348 if (param.Type == ACPI_TYPE_INTEGER)
2349 *number = param.Integer.Value;
2355 * In some applications, a method that's expected to return an Integer
2356 * may instead return a Buffer (probably to simplify some internal
2357 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
2358 * convert it into an Integer as best we can.
2362 if (status == AE_BUFFER_OVERFLOW) {
2363 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
2364 status = AE_NO_MEMORY;
2366 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2367 if (ACPI_SUCCESS(status))
2368 status = acpi_ConvertBufferToInteger(&buf, number);
2369 AcpiOsFree(buf.Pointer);
2376 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2382 p = (ACPI_OBJECT *)bufp->Pointer;
2383 if (p->Type == ACPI_TYPE_INTEGER) {
2384 *number = p->Integer.Value;
2387 if (p->Type != ACPI_TYPE_BUFFER)
2389 if (p->Buffer.Length > sizeof(int))
2390 return (AE_BAD_DATA);
2393 val = p->Buffer.Pointer;
2394 for (i = 0; i < p->Buffer.Length; i++)
2395 *number += val[i] << (i * 8);
2400 * Iterate over the elements of an a package object, calling the supplied
2401 * function for each element.
2403 * XXX possible enhancement might be to abort traversal on error.
2406 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2407 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2412 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2413 return (AE_BAD_PARAMETER);
2415 /* Iterate over components */
2417 comp = pkg->Package.Elements;
2418 for (; i < pkg->Package.Count; i++, comp++)
2425 * Find the (index)th resource object in a set.
2428 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2433 rp = (ACPI_RESOURCE *)buf->Pointer;
2437 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2438 return (AE_BAD_PARAMETER);
2440 /* Check for terminator */
2441 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2442 return (AE_NOT_FOUND);
2443 rp = ACPI_NEXT_RESOURCE(rp);
2452 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2454 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2455 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2456 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2459 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2462 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2467 /* Initialise the buffer if necessary. */
2468 if (buf->Pointer == NULL) {
2469 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2470 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2471 return (AE_NO_MEMORY);
2472 rp = (ACPI_RESOURCE *)buf->Pointer;
2473 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2474 rp->Length = ACPI_RS_SIZE_MIN;
2480 * Scan the current buffer looking for the terminator.
2481 * This will either find the terminator or hit the end
2482 * of the buffer and return an error.
2484 rp = (ACPI_RESOURCE *)buf->Pointer;
2486 /* Range check, don't go outside the buffer */
2487 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2488 return (AE_BAD_PARAMETER);
2489 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2491 rp = ACPI_NEXT_RESOURCE(rp);
2495 * Check the size of the buffer and expand if required.
2498 * size of existing resources before terminator +
2499 * size of new resource and header +
2500 * size of terminator.
2502 * Note that this loop should really only run once, unless
2503 * for some reason we are stuffing a *really* huge resource.
2505 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2506 res->Length + ACPI_RS_SIZE_NO_DATA +
2507 ACPI_RS_SIZE_MIN) >= buf->Length) {
2508 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2509 return (AE_NO_MEMORY);
2510 bcopy(buf->Pointer, newp, buf->Length);
2511 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2512 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
2513 AcpiOsFree(buf->Pointer);
2514 buf->Pointer = newp;
2515 buf->Length += buf->Length;
2518 /* Insert the new resource. */
2519 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2521 /* And add the terminator. */
2522 rp = ACPI_NEXT_RESOURCE(rp);
2523 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2524 rp->Length = ACPI_RS_SIZE_MIN;
2530 acpi_EvaluateOSC(ACPI_HANDLE handle, uint8_t *uuid, int revision, int count,
2531 uint32_t *caps_in, uint32_t *caps_out, bool query)
2533 ACPI_OBJECT arg[4], *ret;
2534 ACPI_OBJECT_LIST arglist;
2538 arglist.Pointer = arg;
2540 arg[0].Type = ACPI_TYPE_BUFFER;
2541 arg[0].Buffer.Length = ACPI_UUID_LENGTH;
2542 arg[0].Buffer.Pointer = uuid;
2543 arg[1].Type = ACPI_TYPE_INTEGER;
2544 arg[1].Integer.Value = revision;
2545 arg[2].Type = ACPI_TYPE_INTEGER;
2546 arg[2].Integer.Value = count;
2547 arg[3].Type = ACPI_TYPE_BUFFER;
2548 arg[3].Buffer.Length = count * sizeof(*caps_in);
2549 arg[3].Buffer.Pointer = (uint8_t *)caps_in;
2550 caps_in[0] = query ? 1 : 0;
2552 buf.Length = ACPI_ALLOCATE_BUFFER;
2553 status = AcpiEvaluateObjectTyped(handle, "_OSC", &arglist, &buf,
2555 if (ACPI_FAILURE(status))
2557 if (caps_out != NULL) {
2559 if (ret->Buffer.Length != count * sizeof(*caps_out)) {
2560 AcpiOsFree(buf.Pointer);
2561 return (AE_BUFFER_OVERFLOW);
2563 bcopy(ret->Buffer.Pointer, caps_out, ret->Buffer.Length);
2565 AcpiOsFree(buf.Pointer);
2570 * Set interrupt model.
2573 acpi_SetIntrModel(int model)
2576 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2580 * Walk subtables of a table and call a callback routine for each
2581 * subtable. The caller should provide the first subtable and a
2582 * pointer to the end of the table. This can be used to walk tables
2583 * such as MADT and SRAT that use subtable entries.
2586 acpi_walk_subtables(void *first, void *end, acpi_subtable_handler *handler,
2589 ACPI_SUBTABLE_HEADER *entry;
2591 for (entry = first; (void *)entry < end; ) {
2592 /* Avoid an infinite loop if we hit a bogus entry. */
2593 if (entry->Length < sizeof(ACPI_SUBTABLE_HEADER))
2596 handler(entry, arg);
2597 entry = ACPI_ADD_PTR(ACPI_SUBTABLE_HEADER, entry, entry->Length);
2602 * DEPRECATED. This interface has serious deficiencies and will be
2605 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2606 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2609 acpi_SetSleepState(struct acpi_softc *sc, int state)
2614 device_printf(sc->acpi_dev,
2615 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2618 return (acpi_EnterSleepState(sc, state));
2621 #if defined(__amd64__) || defined(__i386__)
2623 acpi_sleep_force_task(void *context)
2625 struct acpi_softc *sc = (struct acpi_softc *)context;
2627 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2628 device_printf(sc->acpi_dev, "force sleep state S%d failed\n",
2629 sc->acpi_next_sstate);
2633 acpi_sleep_force(void *arg)
2635 struct acpi_softc *sc = (struct acpi_softc *)arg;
2637 device_printf(sc->acpi_dev,
2638 "suspend request timed out, forcing sleep now\n");
2640 * XXX Suspending from callout causes freezes in DEVICE_SUSPEND().
2641 * Suspend from acpi_task thread instead.
2643 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
2644 acpi_sleep_force_task, sc)))
2645 device_printf(sc->acpi_dev, "AcpiOsExecute() for sleeping failed\n");
2650 * Request that the system enter the given suspend state. All /dev/apm
2651 * devices and devd(8) will be notified. Userland then has a chance to
2652 * save state and acknowledge the request. The system sleeps once all
2656 acpi_ReqSleepState(struct acpi_softc *sc, int state)
2658 #if defined(__amd64__) || defined(__i386__)
2659 struct apm_clone_data *clone;
2662 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
2664 if (!acpi_sleep_states[state])
2665 return (EOPNOTSUPP);
2668 * If a reboot/shutdown/suspend request is already in progress or
2669 * suspend is blocked due to an upcoming shutdown, just return.
2671 if (rebooting || sc->acpi_next_sstate != 0 || suspend_blocked) {
2675 /* Wait until sleep is enabled. */
2676 while (sc->acpi_sleep_disabled) {
2682 sc->acpi_next_sstate = state;
2684 /* S5 (soft-off) should be entered directly with no waiting. */
2685 if (state == ACPI_STATE_S5) {
2687 status = acpi_EnterSleepState(sc, state);
2688 return (ACPI_SUCCESS(status) ? 0 : ENXIO);
2691 /* Record the pending state and notify all apm devices. */
2692 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2693 clone->notify_status = APM_EV_NONE;
2694 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
2695 selwakeuppri(&clone->sel_read, PZERO);
2696 KNOTE_LOCKED(&clone->sel_read.si_note, 0);
2700 /* If devd(8) is not running, immediately enter the sleep state. */
2701 if (!devctl_process_running()) {
2703 status = acpi_EnterSleepState(sc, state);
2704 return (ACPI_SUCCESS(status) ? 0 : ENXIO);
2708 * Set a timeout to fire if userland doesn't ack the suspend request
2709 * in time. This way we still eventually go to sleep if we were
2710 * overheating or running low on battery, even if userland is hung.
2711 * We cancel this timeout once all userland acks are in or the
2712 * suspend request is aborted.
2714 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2717 /* Now notify devd(8) also. */
2718 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2722 /* This platform does not support acpi suspend/resume. */
2723 return (EOPNOTSUPP);
2728 * Acknowledge (or reject) a pending sleep state. The caller has
2729 * prepared for suspend and is now ready for it to proceed. If the
2730 * error argument is non-zero, it indicates suspend should be cancelled
2731 * and gives an errno value describing why. Once all votes are in,
2732 * we suspend the system.
2735 acpi_AckSleepState(struct apm_clone_data *clone, int error)
2737 #if defined(__amd64__) || defined(__i386__)
2738 struct acpi_softc *sc;
2741 /* If no pending sleep state, return an error. */
2743 sc = clone->acpi_sc;
2744 if (sc->acpi_next_sstate == 0) {
2749 /* Caller wants to abort suspend process. */
2751 sc->acpi_next_sstate = 0;
2752 callout_stop(&sc->susp_force_to);
2753 device_printf(sc->acpi_dev,
2754 "listener on %s cancelled the pending suspend\n",
2755 devtoname(clone->cdev));
2761 * Mark this device as acking the suspend request. Then, walk through
2762 * all devices, seeing if they agree yet. We only count devices that
2763 * are writable since read-only devices couldn't ack the request.
2766 clone->notify_status = APM_EV_ACKED;
2767 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2768 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2769 clone->notify_status != APM_EV_ACKED) {
2775 /* If all devices have voted "yes", we will suspend now. */
2777 callout_stop(&sc->susp_force_to);
2781 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2786 /* This platform does not support acpi suspend/resume. */
2787 return (EOPNOTSUPP);
2792 acpi_sleep_enable(void *arg)
2794 struct acpi_softc *sc = (struct acpi_softc *)arg;
2796 ACPI_LOCK_ASSERT(acpi);
2798 /* Reschedule if the system is not fully up and running. */
2799 if (!AcpiGbl_SystemAwakeAndRunning) {
2800 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
2804 sc->acpi_sleep_disabled = FALSE;
2808 acpi_sleep_disable(struct acpi_softc *sc)
2812 /* Fail if the system is not fully up and running. */
2813 if (!AcpiGbl_SystemAwakeAndRunning)
2817 status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK;
2818 sc->acpi_sleep_disabled = TRUE;
2824 enum acpi_sleep_state {
2827 ACPI_SS_DEV_SUSPEND,
2833 * Enter the desired system sleep state.
2835 * Currently we support S1-S5 but S4 is only S4BIOS
2838 acpi_EnterSleepState(struct acpi_softc *sc, int state)
2842 ACPI_EVENT_STATUS power_button_status;
2843 enum acpi_sleep_state slp_state;
2846 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2848 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
2849 return_ACPI_STATUS (AE_BAD_PARAMETER);
2850 if (!acpi_sleep_states[state]) {
2851 device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n",
2853 return (AE_SUPPORT);
2856 /* Re-entry once we're suspending is not allowed. */
2857 status = acpi_sleep_disable(sc);
2858 if (ACPI_FAILURE(status)) {
2859 device_printf(sc->acpi_dev,
2860 "suspend request ignored (not ready yet)\n");
2864 if (state == ACPI_STATE_S5) {
2866 * Shut down cleanly and power off. This will call us back through the
2867 * shutdown handlers.
2869 shutdown_nice(RB_POWEROFF);
2870 return_ACPI_STATUS (AE_OK);
2873 EVENTHANDLER_INVOKE(power_suspend_early);
2875 EVENTHANDLER_INVOKE(power_suspend);
2877 #ifdef EARLY_AP_STARTUP
2878 MPASS(mp_ncpus == 1 || smp_started);
2879 thread_lock(curthread);
2880 sched_bind(curthread, 0);
2881 thread_unlock(curthread);
2884 thread_lock(curthread);
2885 sched_bind(curthread, 0);
2886 thread_unlock(curthread);
2891 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2892 * drivers need this.
2896 slp_state = ACPI_SS_NONE;
2898 sc->acpi_sstate = state;
2900 /* Enable any GPEs as appropriate and requested by the user. */
2901 acpi_wake_prep_walk(state);
2902 slp_state = ACPI_SS_GPE_SET;
2905 * Inform all devices that we are going to sleep. If at least one
2906 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2908 * XXX Note that a better two-pass approach with a 'veto' pass
2909 * followed by a "real thing" pass would be better, but the current
2910 * bus interface does not provide for this.
2912 if (DEVICE_SUSPEND(root_bus) != 0) {
2913 device_printf(sc->acpi_dev, "device_suspend failed\n");
2916 slp_state = ACPI_SS_DEV_SUSPEND;
2918 /* If testing device suspend only, back out of everything here. */
2919 if (acpi_susp_bounce)
2922 status = AcpiEnterSleepStatePrep(state);
2923 if (ACPI_FAILURE(status)) {
2924 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2925 AcpiFormatException(status));
2928 slp_state = ACPI_SS_SLP_PREP;
2930 if (sc->acpi_sleep_delay > 0)
2931 DELAY(sc->acpi_sleep_delay * 1000000);
2933 intr = intr_disable();
2934 if (state != ACPI_STATE_S1) {
2935 sleep_result = acpi_sleep_machdep(sc, state);
2936 acpi_wakeup_machdep(sc, state, sleep_result, 0);
2939 * XXX According to ACPI specification SCI_EN bit should be restored
2940 * by ACPI platform (BIOS, firmware) to its pre-sleep state.
2941 * Unfortunately some BIOSes fail to do that and that leads to
2942 * unexpected and serious consequences during wake up like a system
2943 * getting stuck in SMI handlers.
2944 * This hack is picked up from Linux, which claims that it follows
2947 if (sleep_result == 1 && state != ACPI_STATE_S4)
2948 AcpiWriteBitRegister(ACPI_BITREG_SCI_ENABLE, ACPI_ENABLE_EVENT);
2950 AcpiLeaveSleepStatePrep(state);
2952 if (sleep_result == 1 && state == ACPI_STATE_S3) {
2954 * Prevent mis-interpretation of the wakeup by power button
2955 * as a request for power off.
2956 * Ideally we should post an appropriate wakeup event,
2957 * perhaps using acpi_event_power_button_wake or alike.
2959 * Clearing of power button status after wakeup is mandated
2960 * by ACPI specification in section "Fixed Power Button".
2962 * XXX As of ACPICA 20121114 AcpiGetEventStatus provides
2963 * status as 0/1 corressponding to inactive/active despite
2964 * its type being ACPI_EVENT_STATUS. In other words,
2965 * we should not test for ACPI_EVENT_FLAG_SET for time being.
2967 if (ACPI_SUCCESS(AcpiGetEventStatus(ACPI_EVENT_POWER_BUTTON,
2968 &power_button_status)) && power_button_status != 0) {
2969 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
2970 device_printf(sc->acpi_dev,
2971 "cleared fixed power button status\n");
2977 /* call acpi_wakeup_machdep() again with interrupt enabled */
2978 acpi_wakeup_machdep(sc, state, sleep_result, 1);
2980 if (sleep_result == -1)
2983 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2984 if (state == ACPI_STATE_S4)
2987 status = AcpiEnterSleepState(state);
2988 AcpiLeaveSleepStatePrep(state);
2990 if (ACPI_FAILURE(status)) {
2991 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2992 AcpiFormatException(status));
2996 slp_state = ACPI_SS_SLEPT;
2999 * Back out state according to how far along we got in the suspend
3000 * process. This handles both the error and success cases.
3003 if (slp_state >= ACPI_SS_GPE_SET) {
3004 acpi_wake_prep_walk(state);
3005 sc->acpi_sstate = ACPI_STATE_S0;
3007 if (slp_state >= ACPI_SS_DEV_SUSPEND)
3008 DEVICE_RESUME(root_bus);
3009 if (slp_state >= ACPI_SS_SLP_PREP)
3010 AcpiLeaveSleepState(state);
3011 if (slp_state >= ACPI_SS_SLEPT) {
3012 acpi_resync_clock(sc);
3013 acpi_enable_fixed_events(sc);
3015 sc->acpi_next_sstate = 0;
3019 #ifdef EARLY_AP_STARTUP
3020 thread_lock(curthread);
3021 sched_unbind(curthread);
3022 thread_unlock(curthread);
3025 thread_lock(curthread);
3026 sched_unbind(curthread);
3027 thread_unlock(curthread);
3033 EVENTHANDLER_INVOKE(power_resume);
3035 /* Allow another sleep request after a while. */
3036 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
3038 /* Run /etc/rc.resume after we are back. */
3039 if (devctl_process_running())
3040 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
3042 return_ACPI_STATUS (status);
3046 acpi_resync_clock(struct acpi_softc *sc)
3050 * Warm up timecounter again and reset system clock.
3052 (void)timecounter->tc_get_timecount(timecounter);
3053 (void)timecounter->tc_get_timecount(timecounter);
3054 inittodr(time_second + sc->acpi_sleep_delay);
3057 /* Enable or disable the device's wake GPE. */
3059 acpi_wake_set_enable(device_t dev, int enable)
3061 struct acpi_prw_data prw;
3065 /* Make sure the device supports waking the system and get the GPE. */
3066 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
3069 flags = acpi_get_flags(dev);
3071 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
3073 if (ACPI_FAILURE(status)) {
3074 device_printf(dev, "enable wake failed\n");
3077 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
3079 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
3081 if (ACPI_FAILURE(status)) {
3082 device_printf(dev, "disable wake failed\n");
3085 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
3092 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
3094 struct acpi_prw_data prw;
3097 /* Check that this is a wake-capable device and get its GPE. */
3098 if (acpi_parse_prw(handle, &prw) != 0)
3100 dev = acpi_get_device(handle);
3103 * The destination sleep state must be less than (i.e., higher power)
3104 * or equal to the value specified by _PRW. If this GPE cannot be
3105 * enabled for the next sleep state, then disable it. If it can and
3106 * the user requested it be enabled, turn on any required power resources
3109 if (sstate > prw.lowest_wake) {
3110 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
3112 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
3113 acpi_name(handle), sstate);
3114 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
3115 acpi_pwr_wake_enable(handle, 1);
3116 acpi_SetInteger(handle, "_PSW", 1);
3118 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
3119 acpi_name(handle), sstate);
3126 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
3128 struct acpi_prw_data prw;
3132 * Check that this is a wake-capable device and get its GPE. Return
3133 * now if the user didn't enable this device for wake.
3135 if (acpi_parse_prw(handle, &prw) != 0)
3137 dev = acpi_get_device(handle);
3138 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
3142 * If this GPE couldn't be enabled for the previous sleep state, it was
3143 * disabled before going to sleep so re-enable it. If it was enabled,
3144 * clear _PSW and turn off any power resources it used.
3146 if (sstate > prw.lowest_wake) {
3147 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
3149 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
3151 acpi_SetInteger(handle, "_PSW", 0);
3152 acpi_pwr_wake_enable(handle, 0);
3154 device_printf(dev, "run_prep cleaned up for %s\n",
3162 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
3166 /* If suspending, run the sleep prep function, otherwise wake. */
3167 sstate = *(int *)context;
3168 if (AcpiGbl_SystemAwakeAndRunning)
3169 acpi_wake_sleep_prep(handle, sstate);
3171 acpi_wake_run_prep(handle, sstate);
3175 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
3177 acpi_wake_prep_walk(int sstate)
3179 ACPI_HANDLE sb_handle;
3181 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
3182 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
3183 acpi_wake_prep, NULL, &sstate, NULL);
3187 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
3189 acpi_wake_sysctl_walk(device_t dev)
3191 int error, i, numdevs;
3196 error = device_get_children(dev, &devlist, &numdevs);
3197 if (error != 0 || numdevs == 0) {
3199 free(devlist, M_TEMP);
3202 for (i = 0; i < numdevs; i++) {
3204 acpi_wake_sysctl_walk(child);
3205 if (!device_is_attached(child))
3207 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
3208 if (ACPI_SUCCESS(status)) {
3209 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
3210 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
3211 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
3212 acpi_wake_set_sysctl, "I", "Device set to wake the system");
3215 free(devlist, M_TEMP);
3220 /* Enable or disable wake from userland. */
3222 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
3227 dev = (device_t)arg1;
3228 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
3230 error = sysctl_handle_int(oidp, &enable, 0, req);
3231 if (error != 0 || req->newptr == NULL)
3233 if (enable != 0 && enable != 1)
3236 return (acpi_wake_set_enable(dev, enable));
3239 /* Parse a device's _PRW into a structure. */
3241 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
3244 ACPI_BUFFER prw_buffer;
3245 ACPI_OBJECT *res, *res2;
3246 int error, i, power_count;
3248 if (h == NULL || prw == NULL)
3252 * The _PRW object (7.2.9) is only required for devices that have the
3253 * ability to wake the system from a sleeping state.
3256 prw_buffer.Pointer = NULL;
3257 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
3258 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
3259 if (ACPI_FAILURE(status))
3261 res = (ACPI_OBJECT *)prw_buffer.Pointer;
3264 if (!ACPI_PKG_VALID(res, 2))
3268 * Element 1 of the _PRW object:
3269 * The lowest power system sleeping state that can be entered while still
3270 * providing wake functionality. The sleeping state being entered must
3271 * be less than (i.e., higher power) or equal to this value.
3273 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
3277 * Element 0 of the _PRW object:
3279 switch (res->Package.Elements[0].Type) {
3280 case ACPI_TYPE_INTEGER:
3282 * If the data type of this package element is numeric, then this
3283 * _PRW package element is the bit index in the GPEx_EN, in the
3284 * GPE blocks described in the FADT, of the enable bit that is
3285 * enabled for the wake event.
3287 prw->gpe_handle = NULL;
3288 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
3291 case ACPI_TYPE_PACKAGE:
3293 * If the data type of this package element is a package, then this
3294 * _PRW package element is itself a package containing two
3295 * elements. The first is an object reference to the GPE Block
3296 * device that contains the GPE that will be triggered by the wake
3297 * event. The second element is numeric and it contains the bit
3298 * index in the GPEx_EN, in the GPE Block referenced by the
3299 * first element in the package, of the enable bit that is enabled for
3302 * For example, if this field is a package then it is of the form:
3303 * Package() {\_SB.PCI0.ISA.GPE, 2}
3305 res2 = &res->Package.Elements[0];
3306 if (!ACPI_PKG_VALID(res2, 2))
3308 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
3309 if (prw->gpe_handle == NULL)
3311 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
3319 /* Elements 2 to N of the _PRW object are power resources. */
3320 power_count = res->Package.Count - 2;
3321 if (power_count > ACPI_PRW_MAX_POWERRES) {
3322 printf("ACPI device %s has too many power resources\n", acpi_name(h));
3325 prw->power_res_count = power_count;
3326 for (i = 0; i < power_count; i++)
3327 prw->power_res[i] = res->Package.Elements[i];
3330 if (prw_buffer.Pointer != NULL)
3331 AcpiOsFree(prw_buffer.Pointer);
3336 * ACPI Event Handlers
3339 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
3342 acpi_system_eventhandler_sleep(void *arg, int state)
3344 struct acpi_softc *sc = (struct acpi_softc *)arg;
3347 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
3349 /* Check if button action is disabled or unknown. */
3350 if (state == ACPI_STATE_UNKNOWN)
3353 /* Request that the system prepare to enter the given suspend state. */
3354 ret = acpi_ReqSleepState(sc, state);
3356 device_printf(sc->acpi_dev,
3357 "request to enter state S%d failed (err %d)\n", state, ret);
3363 acpi_system_eventhandler_wakeup(void *arg, int state)
3366 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
3368 /* Currently, nothing to do for wakeup. */
3374 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
3377 acpi_invoke_sleep_eventhandler(void *context)
3380 EVENTHANDLER_INVOKE(acpi_sleep_event, *(int *)context);
3384 acpi_invoke_wake_eventhandler(void *context)
3387 EVENTHANDLER_INVOKE(acpi_wakeup_event, *(int *)context);
3391 acpi_event_power_button_sleep(void *context)
3393 struct acpi_softc *sc = (struct acpi_softc *)context;
3395 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3397 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3398 acpi_invoke_sleep_eventhandler, &sc->acpi_power_button_sx)))
3399 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3400 return_VALUE (ACPI_INTERRUPT_HANDLED);
3404 acpi_event_power_button_wake(void *context)
3406 struct acpi_softc *sc = (struct acpi_softc *)context;
3408 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3410 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3411 acpi_invoke_wake_eventhandler, &sc->acpi_power_button_sx)))
3412 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3413 return_VALUE (ACPI_INTERRUPT_HANDLED);
3417 acpi_event_sleep_button_sleep(void *context)
3419 struct acpi_softc *sc = (struct acpi_softc *)context;
3421 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3423 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3424 acpi_invoke_sleep_eventhandler, &sc->acpi_sleep_button_sx)))
3425 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3426 return_VALUE (ACPI_INTERRUPT_HANDLED);
3430 acpi_event_sleep_button_wake(void *context)
3432 struct acpi_softc *sc = (struct acpi_softc *)context;
3434 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3436 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3437 acpi_invoke_wake_eventhandler, &sc->acpi_sleep_button_sx)))
3438 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3439 return_VALUE (ACPI_INTERRUPT_HANDLED);
3443 * XXX This static buffer is suboptimal. There is no locking so only
3444 * use this for single-threaded callers.
3447 acpi_name(ACPI_HANDLE handle)
3450 static char data[256];
3452 buf.Length = sizeof(data);
3455 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
3457 return ("(unknown)");
3461 * Debugging/bug-avoidance. Avoid trying to fetch info on various
3462 * parts of the namespace.
3465 acpi_avoid(ACPI_HANDLE handle)
3467 char *cp, *env, *np;
3470 np = acpi_name(handle);
3473 if ((env = kern_getenv("debug.acpi.avoid")) == NULL)
3476 /* Scan the avoid list checking for a match */
3479 while (*cp != 0 && isspace(*cp))
3484 while (cp[len] != 0 && !isspace(cp[len]))
3486 if (!strncmp(cp, np, len)) {
3498 * Debugging/bug-avoidance. Disable ACPI subsystem components.
3501 acpi_disabled(char *subsys)
3506 if ((env = kern_getenv("debug.acpi.disabled")) == NULL)
3508 if (strcmp(env, "all") == 0) {
3513 /* Scan the disable list, checking for a match. */
3516 while (*cp != '\0' && isspace(*cp))
3521 while (cp[len] != '\0' && !isspace(cp[len]))
3523 if (strncmp(cp, subsys, len) == 0) {
3535 acpi_lookup(void *arg, const char *name, device_t *dev)
3543 * Allow any handle name that is specified as an absolute path and
3544 * starts with '\'. We could restrict this to \_SB and friends,
3545 * but see acpi_probe_children() for notes on why we scan the entire
3546 * namespace for devices.
3548 * XXX: The pathname argument to AcpiGetHandle() should be fixed to
3551 if (name[0] != '\\')
3553 if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, __DECONST(char *, name),
3556 *dev = acpi_get_device(handle);
3560 * Control interface.
3562 * We multiplex ioctls for all participating ACPI devices here. Individual
3563 * drivers wanting to be accessible via /dev/acpi should use the
3564 * register/deregister interface to make their handlers visible.
3566 struct acpi_ioctl_hook
3568 TAILQ_ENTRY(acpi_ioctl_hook) link;
3574 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
3575 static int acpi_ioctl_hooks_initted;
3578 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
3580 struct acpi_ioctl_hook *hp;
3582 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
3589 if (acpi_ioctl_hooks_initted == 0) {
3590 TAILQ_INIT(&acpi_ioctl_hooks);
3591 acpi_ioctl_hooks_initted = 1;
3593 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
3600 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
3602 struct acpi_ioctl_hook *hp;
3605 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
3606 if (hp->cmd == cmd && hp->fn == fn)
3610 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
3611 free(hp, M_ACPIDEV);
3617 acpiopen(struct cdev *dev, int flag, int fmt, struct thread *td)
3623 acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td)
3629 acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
3631 struct acpi_softc *sc;
3632 struct acpi_ioctl_hook *hp;
3640 * Scan the list of registered ioctls, looking for handlers.
3643 if (acpi_ioctl_hooks_initted)
3644 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3650 return (hp->fn(cmd, addr, hp->arg));
3653 * Core ioctls are not permitted for non-writable user.
3654 * Currently, other ioctls just fetch information.
3655 * Not changing system behavior.
3657 if ((flag & FWRITE) == 0)
3660 /* Core system ioctls. */
3662 case ACPIIO_REQSLPSTATE:
3663 state = *(int *)addr;
3664 if (state != ACPI_STATE_S5)
3665 return (acpi_ReqSleepState(sc, state));
3666 device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n");
3669 case ACPIIO_ACKSLPSTATE:
3670 error = *(int *)addr;
3671 error = acpi_AckSleepState(sc->acpi_clone, error);
3673 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3674 state = *(int *)addr;
3675 if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX)
3677 if (!acpi_sleep_states[state])
3678 return (EOPNOTSUPP);
3679 if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
3691 acpi_sname2sstate(const char *sname)
3695 if (toupper(sname[0]) == 'S') {
3696 sstate = sname[1] - '0';
3697 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 &&
3700 } else if (strcasecmp(sname, "NONE") == 0)
3701 return (ACPI_STATE_UNKNOWN);
3706 acpi_sstate2sname(int sstate)
3708 static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" };
3710 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5)
3711 return (snames[sstate]);
3712 else if (sstate == ACPI_STATE_UNKNOWN)
3718 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3724 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3725 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
3726 if (acpi_sleep_states[state])
3727 sbuf_printf(&sb, "%s ", acpi_sstate2sname(state));
3730 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3736 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3738 char sleep_state[10];
3739 int error, new_state, old_state;
3741 old_state = *(int *)oidp->oid_arg1;
3742 strlcpy(sleep_state, acpi_sstate2sname(old_state), sizeof(sleep_state));
3743 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3744 if (error == 0 && req->newptr != NULL) {
3745 new_state = acpi_sname2sstate(sleep_state);
3746 if (new_state < ACPI_STATE_S1)
3748 if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state])
3749 return (EOPNOTSUPP);
3750 if (new_state != old_state)
3751 *(int *)oidp->oid_arg1 = new_state;
3756 /* Inform devctl(4) when we receive a Notify. */
3758 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3760 char notify_buf[16];
3761 ACPI_BUFFER handle_buf;
3764 if (subsystem == NULL)
3767 handle_buf.Pointer = NULL;
3768 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3769 status = AcpiNsHandleToPathname(h, &handle_buf, FALSE);
3770 if (ACPI_FAILURE(status))
3772 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
3773 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
3774 AcpiOsFree(handle_buf.Pointer);
3779 * Support for parsing debug options from the kernel environment.
3781 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3782 * by specifying the names of the bits in the debug.acpi.layer and
3783 * debug.acpi.level environment variables. Bits may be unset by
3784 * prefixing the bit name with !.
3792 static struct debugtag dbg_layer[] = {
3793 {"ACPI_UTILITIES", ACPI_UTILITIES},
3794 {"ACPI_HARDWARE", ACPI_HARDWARE},
3795 {"ACPI_EVENTS", ACPI_EVENTS},
3796 {"ACPI_TABLES", ACPI_TABLES},
3797 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3798 {"ACPI_PARSER", ACPI_PARSER},
3799 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3800 {"ACPI_EXECUTER", ACPI_EXECUTER},
3801 {"ACPI_RESOURCES", ACPI_RESOURCES},
3802 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3803 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3804 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3805 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3807 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3808 {"ACPI_BATTERY", ACPI_BATTERY},
3809 {"ACPI_BUS", ACPI_BUS},
3810 {"ACPI_BUTTON", ACPI_BUTTON},
3811 {"ACPI_EC", ACPI_EC},
3812 {"ACPI_FAN", ACPI_FAN},
3813 {"ACPI_POWERRES", ACPI_POWERRES},
3814 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3815 {"ACPI_THERMAL", ACPI_THERMAL},
3816 {"ACPI_TIMER", ACPI_TIMER},
3817 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3821 static struct debugtag dbg_level[] = {
3822 {"ACPI_LV_INIT", ACPI_LV_INIT},
3823 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3824 {"ACPI_LV_INFO", ACPI_LV_INFO},
3825 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR},
3826 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3828 /* Trace verbosity level 1 [Standard Trace Level] */
3829 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3830 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3831 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3832 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3833 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3834 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3835 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3836 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3837 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3838 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3839 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3840 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3841 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3842 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3843 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3845 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3846 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3847 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3848 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3849 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3850 {"ACPI_LV_ALL", ACPI_LV_ALL},
3852 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3853 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3854 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3855 {"ACPI_LV_IO", ACPI_LV_IO},
3856 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3857 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3859 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3860 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
3861 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
3862 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
3863 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
3864 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
3869 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
3881 while (*ep && !isspace(*ep))
3892 for (i = 0; tag[i].name != NULL; i++) {
3893 if (!strncmp(cp, tag[i].name, l)) {
3895 *flag |= tag[i].value;
3897 *flag &= ~tag[i].value;
3905 acpi_set_debugging(void *junk)
3907 char *layer, *level;
3914 layer = kern_getenv("debug.acpi.layer");
3915 level = kern_getenv("debug.acpi.level");
3916 if (layer == NULL && level == NULL)
3919 printf("ACPI set debug");
3920 if (layer != NULL) {
3921 if (strcmp("NONE", layer) != 0)
3922 printf(" layer '%s'", layer);
3923 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
3926 if (level != NULL) {
3927 if (strcmp("NONE", level) != 0)
3928 printf(" level '%s'", level);
3929 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
3935 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3939 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
3942 struct debugtag *tag;
3946 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
3948 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
3949 tag = &dbg_layer[0];
3950 dbg = &AcpiDbgLayer;
3952 tag = &dbg_level[0];
3953 dbg = &AcpiDbgLevel;
3956 /* Get old values if this is a get request. */
3957 ACPI_SERIAL_BEGIN(acpi);
3959 sbuf_cpy(&sb, "NONE");
3960 } else if (req->newptr == NULL) {
3961 for (; tag->name != NULL; tag++) {
3962 if ((*dbg & tag->value) == tag->value)
3963 sbuf_printf(&sb, "%s ", tag->name);
3968 strlcpy(temp, sbuf_data(&sb), sizeof(temp));
3971 error = sysctl_handle_string(oidp, temp, sizeof(temp), req);
3973 /* Check for error or no change */
3974 if (error == 0 && req->newptr != NULL) {
3976 kern_setenv((char *)oidp->oid_arg1, temp);
3977 acpi_set_debugging(NULL);
3979 ACPI_SERIAL_END(acpi);
3984 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
3985 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
3986 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
3987 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3988 #endif /* ACPI_DEBUG */
3991 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS)
3996 old = acpi_debug_objects;
3997 error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req);
3998 if (error != 0 || req->newptr == NULL)
4000 if (old == acpi_debug_objects || (old && acpi_debug_objects))
4003 ACPI_SERIAL_BEGIN(acpi);
4004 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
4005 ACPI_SERIAL_END(acpi);
4011 acpi_parse_interfaces(char *str, struct acpi_interface *iface)
4018 while (isspace(*p) || *p == ',')
4023 p = strdup(p, M_TEMP);
4024 for (i = 0; i < len; i++)
4029 if (isspace(p[i]) || p[i] == '\0')
4032 i += strlen(p + i) + 1;
4039 iface->data = malloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK);
4043 if (isspace(p[i]) || p[i] == '\0')
4046 iface->data[j] = p + i;
4047 i += strlen(p + i) + 1;
4055 acpi_free_interfaces(struct acpi_interface *iface)
4058 free(iface->data[0], M_TEMP);
4059 free(iface->data, M_TEMP);
4063 acpi_reset_interfaces(device_t dev)
4065 struct acpi_interface list;
4069 if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) {
4070 for (i = 0; i < list.num; i++) {
4071 status = AcpiInstallInterface(list.data[i]);
4072 if (ACPI_FAILURE(status))
4074 "failed to install _OSI(\"%s\"): %s\n",
4075 list.data[i], AcpiFormatException(status));
4076 else if (bootverbose)
4077 device_printf(dev, "installed _OSI(\"%s\")\n",
4080 acpi_free_interfaces(&list);
4082 if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) {
4083 for (i = 0; i < list.num; i++) {
4084 status = AcpiRemoveInterface(list.data[i]);
4085 if (ACPI_FAILURE(status))
4087 "failed to remove _OSI(\"%s\"): %s\n",
4088 list.data[i], AcpiFormatException(status));
4089 else if (bootverbose)
4090 device_printf(dev, "removed _OSI(\"%s\")\n",
4093 acpi_free_interfaces(&list);
4098 acpi_pm_func(u_long cmd, void *arg, ...)
4100 int state, acpi_state;
4102 struct acpi_softc *sc;
4107 case POWER_CMD_SUSPEND:
4108 sc = (struct acpi_softc *)arg;
4115 state = va_arg(ap, int);
4119 case POWER_SLEEP_STATE_STANDBY:
4120 acpi_state = sc->acpi_standby_sx;
4122 case POWER_SLEEP_STATE_SUSPEND:
4123 acpi_state = sc->acpi_suspend_sx;
4125 case POWER_SLEEP_STATE_HIBERNATE:
4126 acpi_state = ACPI_STATE_S4;
4133 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
4146 acpi_pm_register(void *arg)
4148 if (!cold || resource_disabled("acpi", 0))
4151 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
4154 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);