2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
4 * Copyright (c) 2000, 2001 Michael Smith
5 * Copyright (c) 2000 BSDi
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
35 #include <sys/param.h>
36 #include <sys/kernel.h>
38 #include <sys/fcntl.h>
39 #include <sys/malloc.h>
40 #include <sys/module.h>
43 #include <sys/ioccom.h>
44 #include <sys/reboot.h>
45 #include <sys/sysctl.h>
46 #include <sys/ctype.h>
47 #include <sys/linker.h>
48 #include <sys/power.h>
50 #include <sys/sched.h>
52 #include <sys/timetc.h>
54 #if defined(__i386__) || defined(__amd64__)
55 #include <machine/pci_cfgreg.h>
57 #include <machine/resource.h>
58 #include <machine/bus.h>
60 #include <isa/isavar.h>
61 #include <isa/pnpvar.h>
63 #include <contrib/dev/acpica/include/acpi.h>
64 #include <contrib/dev/acpica/include/accommon.h>
65 #include <contrib/dev/acpica/include/acnamesp.h>
67 #include <dev/acpica/acpivar.h>
68 #include <dev/acpica/acpiio.h>
70 #include <dev/pci/pcivar.h>
72 #include <vm/vm_param.h>
74 static MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
76 /* Hooks for the ACPI CA debugging infrastructure */
77 #define _COMPONENT ACPI_BUS
78 ACPI_MODULE_NAME("ACPI")
80 static d_open_t acpiopen;
81 static d_close_t acpiclose;
82 static d_ioctl_t acpiioctl;
84 static struct cdevsw acpi_cdevsw = {
85 .d_version = D_VERSION,
92 struct acpi_interface {
97 static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
98 static char *pcilink_ids[] = { "PNP0C0F", NULL };
100 /* Global mutex for locking access to the ACPI subsystem. */
101 struct mtx acpi_mutex;
102 struct callout acpi_sleep_timer;
104 /* Bitmap of device quirks. */
107 /* Supported sleep states. */
108 static BOOLEAN acpi_sleep_states[ACPI_S_STATE_COUNT];
110 static void acpi_lookup(void *arg, const char *name, device_t *dev);
111 static int acpi_modevent(struct module *mod, int event, void *junk);
112 static int acpi_probe(device_t dev);
113 static int acpi_attach(device_t dev);
114 static int acpi_suspend(device_t dev);
115 static int acpi_resume(device_t dev);
116 static int acpi_shutdown(device_t dev);
117 static device_t acpi_add_child(device_t bus, u_int order, const char *name,
119 static int acpi_print_child(device_t bus, device_t child);
120 static void acpi_probe_nomatch(device_t bus, device_t child);
121 static void acpi_driver_added(device_t dev, driver_t *driver);
122 static int acpi_read_ivar(device_t dev, device_t child, int index,
124 static int acpi_write_ivar(device_t dev, device_t child, int index,
126 static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
127 static void acpi_reserve_resources(device_t dev);
128 static int acpi_sysres_alloc(device_t dev);
129 static int acpi_set_resource(device_t dev, device_t child, int type,
130 int rid, rman_res_t start, rman_res_t count);
131 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
132 int type, int *rid, rman_res_t start, rman_res_t end,
133 rman_res_t count, u_int flags);
134 static int acpi_adjust_resource(device_t bus, device_t child, int type,
135 struct resource *r, rman_res_t start, rman_res_t end);
136 static int acpi_release_resource(device_t bus, device_t child, int type,
137 int rid, struct resource *r);
138 static void acpi_delete_resource(device_t bus, device_t child, int type,
140 static uint32_t acpi_isa_get_logicalid(device_t dev);
141 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
142 static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
143 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
144 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
146 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
147 void *context, void **retval);
148 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
149 int max_depth, acpi_scan_cb_t user_fn, void *arg);
150 static int acpi_set_powerstate(device_t child, int state);
151 static int acpi_isa_pnp_probe(device_t bus, device_t child,
152 struct isa_pnp_id *ids);
153 static void acpi_probe_children(device_t bus);
154 static void acpi_probe_order(ACPI_HANDLE handle, int *order);
155 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
156 void *context, void **status);
157 static void acpi_sleep_enable(void *arg);
158 static ACPI_STATUS acpi_sleep_disable(struct acpi_softc *sc);
159 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
160 static void acpi_shutdown_final(void *arg, int howto);
161 static void acpi_enable_fixed_events(struct acpi_softc *sc);
162 static BOOLEAN acpi_has_hid(ACPI_HANDLE handle);
163 static void acpi_resync_clock(struct acpi_softc *sc);
164 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
165 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
166 static int acpi_wake_prep_walk(int sstate);
167 static int acpi_wake_sysctl_walk(device_t dev);
168 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
169 static void acpi_system_eventhandler_sleep(void *arg, int state);
170 static void acpi_system_eventhandler_wakeup(void *arg, int state);
171 static int acpi_sname2sstate(const char *sname);
172 static const char *acpi_sstate2sname(int sstate);
173 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
174 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
175 static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS);
176 static int acpi_pm_func(u_long cmd, void *arg, ...);
177 static int acpi_child_location_str_method(device_t acdev, device_t child,
178 char *buf, size_t buflen);
179 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
180 char *buf, size_t buflen);
181 #if defined(__i386__) || defined(__amd64__)
182 static void acpi_enable_pcie(void);
184 static void acpi_hint_device_unit(device_t acdev, device_t child,
185 const char *name, int *unitp);
186 static void acpi_reset_interfaces(device_t dev);
188 static device_method_t acpi_methods[] = {
189 /* Device interface */
190 DEVMETHOD(device_probe, acpi_probe),
191 DEVMETHOD(device_attach, acpi_attach),
192 DEVMETHOD(device_shutdown, acpi_shutdown),
193 DEVMETHOD(device_detach, bus_generic_detach),
194 DEVMETHOD(device_suspend, acpi_suspend),
195 DEVMETHOD(device_resume, acpi_resume),
198 DEVMETHOD(bus_add_child, acpi_add_child),
199 DEVMETHOD(bus_print_child, acpi_print_child),
200 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
201 DEVMETHOD(bus_driver_added, acpi_driver_added),
202 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
203 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
204 DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
205 DEVMETHOD(bus_set_resource, acpi_set_resource),
206 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
207 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
208 DEVMETHOD(bus_adjust_resource, acpi_adjust_resource),
209 DEVMETHOD(bus_release_resource, acpi_release_resource),
210 DEVMETHOD(bus_delete_resource, acpi_delete_resource),
211 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
212 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
213 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
214 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
215 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
216 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
217 DEVMETHOD(bus_hint_device_unit, acpi_hint_device_unit),
218 DEVMETHOD(bus_get_cpus, acpi_get_cpus),
219 DEVMETHOD(bus_get_domain, acpi_get_domain),
222 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
223 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
224 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
225 DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
228 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
233 static driver_t acpi_driver = {
236 sizeof(struct acpi_softc),
239 static devclass_t acpi_devclass;
240 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
241 MODULE_VERSION(acpi, 1);
243 ACPI_SERIAL_DECL(acpi, "ACPI root bus");
245 /* Local pools for managing system resources for ACPI child devices. */
246 static struct rman acpi_rman_io, acpi_rman_mem;
248 #define ACPI_MINIMUM_AWAKETIME 5
250 /* Holds the description of the acpi0 device. */
251 static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
253 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
254 static char acpi_ca_version[12];
255 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
256 acpi_ca_version, 0, "Version of Intel ACPI-CA");
259 * Allow overriding _OSI methods.
261 static char acpi_install_interface[256];
262 TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface,
263 sizeof(acpi_install_interface));
264 static char acpi_remove_interface[256];
265 TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface,
266 sizeof(acpi_remove_interface));
268 /* Allow users to dump Debug objects without ACPI debugger. */
269 static int acpi_debug_objects;
270 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects);
271 SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects,
272 CTLFLAG_RW | CTLTYPE_INT, NULL, 0, acpi_debug_objects_sysctl, "I",
273 "Enable Debug objects");
275 /* Allow the interpreter to ignore common mistakes in BIOS. */
276 static int acpi_interpreter_slack = 1;
277 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack);
278 SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RDTUN,
279 &acpi_interpreter_slack, 1, "Turn on interpreter slack mode.");
281 /* Ignore register widths set by FADT and use default widths instead. */
282 static int acpi_ignore_reg_width = 1;
283 TUNABLE_INT("debug.acpi.default_register_width", &acpi_ignore_reg_width);
284 SYSCTL_INT(_debug_acpi, OID_AUTO, default_register_width, CTLFLAG_RDTUN,
285 &acpi_ignore_reg_width, 1, "Ignore register widths set by FADT");
287 /* Allow users to override quirks. */
288 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
290 static int acpi_susp_bounce;
291 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
292 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
295 * ACPI can only be loaded as a module by the loader; activating it after
296 * system bootstrap time is not useful, and can be fatal to the system.
297 * It also cannot be unloaded, since the entire system bus hierarchy hangs
301 acpi_modevent(struct module *mod, int event, void *junk)
306 printf("The ACPI driver cannot be loaded after boot.\n");
311 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
321 * Perform early initialization.
326 static int started = 0;
330 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
332 /* Only run the startup code once. The MADT driver also calls this. */
334 return_VALUE (AE_OK);
338 * Initialize the ACPICA subsystem.
340 if (ACPI_FAILURE(status = AcpiInitializeSubsystem())) {
341 printf("ACPI: Could not initialize Subsystem: %s\n",
342 AcpiFormatException(status));
343 return_VALUE (status);
347 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
348 * if more tables exist.
350 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
351 printf("ACPI: Table initialisation failed: %s\n",
352 AcpiFormatException(status));
353 return_VALUE (status);
356 /* Set up any quirks we have for this system. */
357 if (acpi_quirks == ACPI_Q_OK)
358 acpi_table_quirks(&acpi_quirks);
360 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
361 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
362 acpi_quirks &= ~ACPI_Q_BROKEN;
363 if (acpi_quirks & ACPI_Q_BROKEN) {
364 printf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
368 return_VALUE (status);
372 * Detect ACPI and perform early initialisation.
377 ACPI_TABLE_RSDP *rsdp;
378 ACPI_TABLE_HEADER *rsdt;
379 ACPI_PHYSICAL_ADDRESS paddr;
382 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
387 /* Check that we haven't been disabled with a hint. */
388 if (resource_disabled("acpi", 0))
391 /* Check for other PM systems. */
392 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
393 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
394 printf("ACPI identify failed, other PM system enabled.\n");
398 /* Initialize root tables. */
399 if (ACPI_FAILURE(acpi_Startup())) {
400 printf("ACPI: Try disabling either ACPI or apic support.\n");
404 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
405 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
407 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
408 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
410 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
411 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
413 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
415 sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN);
416 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
419 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
423 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
425 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
431 * Fetch some descriptive data from ACPI to put in our attach message.
434 acpi_probe(device_t dev)
437 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
439 device_set_desc(dev, acpi_desc);
441 return_VALUE (BUS_PROBE_NOWILDCARD);
445 acpi_attach(device_t dev)
447 struct acpi_softc *sc;
454 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
456 sc = device_get_softc(dev);
458 callout_init(&sc->susp_force_to, 1);
462 /* Initialize resource manager. */
463 acpi_rman_io.rm_type = RMAN_ARRAY;
464 acpi_rman_io.rm_start = 0;
465 acpi_rman_io.rm_end = 0xffff;
466 acpi_rman_io.rm_descr = "ACPI I/O ports";
467 if (rman_init(&acpi_rman_io) != 0)
468 panic("acpi rman_init IO ports failed");
469 acpi_rman_mem.rm_type = RMAN_ARRAY;
470 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
471 if (rman_init(&acpi_rman_mem) != 0)
472 panic("acpi rman_init memory failed");
474 /* Initialise the ACPI mutex */
475 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
478 * Set the globals from our tunables. This is needed because ACPI-CA
479 * uses UINT8 for some values and we have no tunable_byte.
481 AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE;
482 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
483 AcpiGbl_UseDefaultRegisterWidths = acpi_ignore_reg_width ? TRUE : FALSE;
487 * Disable all debugging layers and levels.
493 /* Override OS interfaces if the user requested. */
494 acpi_reset_interfaces(dev);
496 /* Load ACPI name space. */
497 status = AcpiLoadTables();
498 if (ACPI_FAILURE(status)) {
499 device_printf(dev, "Could not load Namespace: %s\n",
500 AcpiFormatException(status));
504 #if defined(__i386__) || defined(__amd64__)
505 /* Handle MCFG table if present. */
510 * Note that some systems (specifically, those with namespace evaluation
511 * issues that require the avoidance of parts of the namespace) must
512 * avoid running _INI and _STA on everything, as well as dodging the final
515 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
517 * XXX We should arrange for the object init pass after we have attached
518 * all our child devices, but on many systems it works here.
521 if (testenv("debug.acpi.avoid"))
522 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
524 /* Bring the hardware and basic handlers online. */
525 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
526 device_printf(dev, "Could not enable ACPI: %s\n",
527 AcpiFormatException(status));
532 * Call the ECDT probe function to provide EC functionality before
533 * the namespace has been evaluated.
535 * XXX This happens before the sysresource devices have been probed and
536 * attached so its resources come from nexus0. In practice, this isn't
537 * a problem but should be addressed eventually.
539 acpi_ec_ecdt_probe(dev);
541 /* Bring device objects and regions online. */
542 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
543 device_printf(dev, "Could not initialize ACPI objects: %s\n",
544 AcpiFormatException(status));
549 * Setup our sysctl tree.
551 * XXX: This doesn't check to make sure that none of these fail.
553 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
554 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
555 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
556 device_get_name(dev), CTLFLAG_RD, 0, "");
557 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
558 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
559 0, 0, acpi_supported_sleep_state_sysctl, "A",
560 "List supported ACPI sleep states.");
561 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
562 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
563 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A",
564 "Power button ACPI sleep state.");
565 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
566 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
567 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A",
568 "Sleep button ACPI sleep state.");
569 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
570 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
571 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A",
572 "Lid ACPI sleep state. Set to S3 if you want to suspend your laptop when close the Lid.");
573 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
574 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
575 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
576 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
577 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
578 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
579 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
580 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
581 "sleep delay in seconds");
582 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
583 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
584 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
585 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
586 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
587 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
588 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
589 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
590 OID_AUTO, "handle_reboot", CTLFLAG_RW,
591 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
594 * Default to 1 second before sleeping to give some machines time to
597 sc->acpi_sleep_delay = 1;
599 sc->acpi_verbose = 1;
600 if ((env = kern_getenv("hw.acpi.verbose")) != NULL) {
601 if (strcmp(env, "0") != 0)
602 sc->acpi_verbose = 1;
606 /* Only enable reboot by default if the FADT says it is available. */
607 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER)
608 sc->acpi_handle_reboot = 1;
610 #if !ACPI_REDUCED_HARDWARE
611 /* Only enable S4BIOS by default if the FACS says it is available. */
612 if (AcpiGbl_FACS != NULL && AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
616 /* Probe all supported sleep states. */
617 acpi_sleep_states[ACPI_STATE_S0] = TRUE;
618 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
619 if (ACPI_SUCCESS(AcpiEvaluateObject(ACPI_ROOT_OBJECT,
620 __DECONST(char *, AcpiGbl_SleepStateNames[state]), NULL, NULL)) &&
621 ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
622 acpi_sleep_states[state] = TRUE;
625 * Dispatch the default sleep state to devices. The lid switch is set
626 * to UNKNOWN by default to avoid surprising users.
628 sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ?
629 ACPI_STATE_S5 : ACPI_STATE_UNKNOWN;
630 sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN;
631 sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ?
632 ACPI_STATE_S1 : ACPI_STATE_UNKNOWN;
633 sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ?
634 ACPI_STATE_S3 : ACPI_STATE_UNKNOWN;
636 /* Pick the first valid sleep state for the sleep button default. */
637 sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN;
638 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
639 if (acpi_sleep_states[state]) {
640 sc->acpi_sleep_button_sx = state;
644 acpi_enable_fixed_events(sc);
647 * Scan the namespace and attach/initialise children.
650 /* Register our shutdown handler. */
651 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
655 * Register our acpi event handlers.
656 * XXX should be configurable eg. via userland policy manager.
658 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
659 sc, ACPI_EVENT_PRI_LAST);
660 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
661 sc, ACPI_EVENT_PRI_LAST);
663 /* Flag our initial states. */
664 sc->acpi_enabled = TRUE;
665 sc->acpi_sstate = ACPI_STATE_S0;
666 sc->acpi_sleep_disabled = TRUE;
668 /* Create the control device */
669 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
671 sc->acpi_dev_t->si_drv1 = sc;
673 if ((error = acpi_machdep_init(dev)))
676 /* Register ACPI again to pass the correct argument of pm_func. */
677 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
679 if (!acpi_disabled("bus")) {
680 EVENTHANDLER_REGISTER(dev_lookup, acpi_lookup, NULL, 1000);
681 acpi_probe_children(dev);
684 /* Update all GPEs and enable runtime GPEs. */
685 status = AcpiUpdateAllGpes();
686 if (ACPI_FAILURE(status))
687 device_printf(dev, "Could not update all GPEs: %s\n",
688 AcpiFormatException(status));
690 /* Allow sleep request after a while. */
691 callout_init_mtx(&acpi_sleep_timer, &acpi_mutex, 0);
692 callout_reset(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME,
693 acpi_sleep_enable, sc);
698 return_VALUE (error);
702 acpi_set_power_children(device_t dev, int state)
706 int dstate, i, numdevs;
708 if (device_get_children(dev, &devlist, &numdevs) != 0)
712 * Retrieve and set D-state for the sleep state if _SxD is present.
713 * Skip children who aren't attached since they are handled separately.
715 for (i = 0; i < numdevs; i++) {
718 if (device_is_attached(child) &&
719 acpi_device_pwr_for_sleep(dev, child, &dstate) == 0)
720 acpi_set_powerstate(child, dstate);
722 free(devlist, M_TEMP);
726 acpi_suspend(device_t dev)
732 error = bus_generic_suspend(dev);
734 acpi_set_power_children(dev, ACPI_STATE_D3);
740 acpi_resume(device_t dev)
745 acpi_set_power_children(dev, ACPI_STATE_D0);
747 return (bus_generic_resume(dev));
751 acpi_shutdown(device_t dev)
756 /* Allow children to shutdown first. */
757 bus_generic_shutdown(dev);
760 * Enable any GPEs that are able to power-on the system (i.e., RTC).
761 * Also, disable any that are not valid for this state (most).
763 acpi_wake_prep_walk(ACPI_STATE_S5);
769 * Handle a new device being added
772 acpi_add_child(device_t bus, u_int order, const char *name, int unit)
774 struct acpi_device *ad;
777 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
780 resource_list_init(&ad->ad_rl);
782 child = device_add_child_ordered(bus, order, name, unit);
784 device_set_ivars(child, ad);
791 acpi_print_child(device_t bus, device_t child)
793 struct acpi_device *adev = device_get_ivars(child);
794 struct resource_list *rl = &adev->ad_rl;
797 retval += bus_print_child_header(bus, child);
798 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#jx");
799 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#jx");
800 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd");
801 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%jd");
802 if (device_get_flags(child))
803 retval += printf(" flags %#x", device_get_flags(child));
804 retval += bus_print_child_domain(bus, child);
805 retval += bus_print_child_footer(bus, child);
811 * If this device is an ACPI child but no one claimed it, attempt
812 * to power it off. We'll power it back up when a driver is added.
814 * XXX Disabled for now since many necessary devices (like fdc and
815 * ATA) don't claim the devices we created for them but still expect
816 * them to be powered up.
819 acpi_probe_nomatch(device_t bus, device_t child)
821 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
822 acpi_set_powerstate(child, ACPI_STATE_D3);
827 * If a new driver has a chance to probe a child, first power it up.
829 * XXX Disabled for now (see acpi_probe_nomatch for details).
832 acpi_driver_added(device_t dev, driver_t *driver)
834 device_t child, *devlist;
837 DEVICE_IDENTIFY(driver, dev);
838 if (device_get_children(dev, &devlist, &numdevs))
840 for (i = 0; i < numdevs; i++) {
842 if (device_get_state(child) == DS_NOTPRESENT) {
843 #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
844 acpi_set_powerstate(child, ACPI_STATE_D0);
845 if (device_probe_and_attach(child) != 0)
846 acpi_set_powerstate(child, ACPI_STATE_D3);
848 device_probe_and_attach(child);
852 free(devlist, M_TEMP);
855 /* Location hint for devctl(8) */
857 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
860 struct acpi_device *dinfo = device_get_ivars(child);
864 if (dinfo->ad_handle) {
865 snprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
866 if (ACPI_SUCCESS(acpi_GetInteger(dinfo->ad_handle, "_PXM", &pxm))) {
867 snprintf(buf2, 32, " _PXM=%d", pxm);
868 strlcat(buf, buf2, buflen);
871 snprintf(buf, buflen, "unknown");
876 /* PnP information for devctl(8) */
878 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
881 struct acpi_device *dinfo = device_get_ivars(child);
882 ACPI_DEVICE_INFO *adinfo;
884 if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo))) {
885 snprintf(buf, buflen, "unknown");
889 snprintf(buf, buflen, "_HID=%s _UID=%lu",
890 (adinfo->Valid & ACPI_VALID_HID) ?
891 adinfo->HardwareId.String : "none",
892 (adinfo->Valid & ACPI_VALID_UID) ?
893 strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL);
900 * Handle per-device ivars
903 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
905 struct acpi_device *ad;
907 if ((ad = device_get_ivars(child)) == NULL) {
908 device_printf(child, "device has no ivars\n");
912 /* ACPI and ISA compatibility ivars */
914 case ACPI_IVAR_HANDLE:
915 *(ACPI_HANDLE *)result = ad->ad_handle;
917 case ACPI_IVAR_PRIVATE:
918 *(void **)result = ad->ad_private;
920 case ACPI_IVAR_FLAGS:
921 *(int *)result = ad->ad_flags;
923 case ISA_IVAR_VENDORID:
924 case ISA_IVAR_SERIAL:
925 case ISA_IVAR_COMPATID:
928 case ISA_IVAR_LOGICALID:
929 *(int *)result = acpi_isa_get_logicalid(child);
932 *(uint8_t*)result = (ad->ad_cls_class >> 16) & 0xff;
934 case PCI_IVAR_SUBCLASS:
935 *(uint8_t*)result = (ad->ad_cls_class >> 8) & 0xff;
937 case PCI_IVAR_PROGIF:
938 *(uint8_t*)result = (ad->ad_cls_class >> 0) & 0xff;
948 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
950 struct acpi_device *ad;
952 if ((ad = device_get_ivars(child)) == NULL) {
953 device_printf(child, "device has no ivars\n");
958 case ACPI_IVAR_HANDLE:
959 ad->ad_handle = (ACPI_HANDLE)value;
961 case ACPI_IVAR_PRIVATE:
962 ad->ad_private = (void *)value;
964 case ACPI_IVAR_FLAGS:
965 ad->ad_flags = (int)value;
968 panic("bad ivar write request (%d)", index);
976 * Handle child resource allocation/removal
978 static struct resource_list *
979 acpi_get_rlist(device_t dev, device_t child)
981 struct acpi_device *ad;
983 ad = device_get_ivars(child);
988 acpi_match_resource_hint(device_t dev, int type, long value)
990 struct acpi_device *ad = device_get_ivars(dev);
991 struct resource_list *rl = &ad->ad_rl;
992 struct resource_list_entry *rle;
994 STAILQ_FOREACH(rle, rl, link) {
995 if (rle->type != type)
997 if (rle->start <= value && rle->end >= value)
1004 * Wire device unit numbers based on resource matches in hints.
1007 acpi_hint_device_unit(device_t acdev, device_t child, const char *name,
1012 int line, matches, unit;
1015 * Iterate over all the hints for the devices with the specified
1016 * name to see if one's resources are a subset of this device.
1019 while (resource_find_dev(&line, name, &unit, "at", NULL) == 0) {
1020 /* Must have an "at" for acpi or isa. */
1021 resource_string_value(name, unit, "at", &s);
1022 if (!(strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 ||
1023 strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0))
1027 * Check for matching resources. We must have at least one match.
1028 * Since I/O and memory resources cannot be shared, if we get a
1029 * match on either of those, ignore any mismatches in IRQs or DRQs.
1031 * XXX: We may want to revisit this to be more lenient and wire
1032 * as long as it gets one match.
1035 if (resource_long_value(name, unit, "port", &value) == 0) {
1037 * Floppy drive controllers are notorious for having a
1038 * wide variety of resources not all of which include the
1039 * first port that is specified by the hint (typically
1040 * 0x3f0) (see the comment above fdc_isa_alloc_resources()
1041 * in fdc_isa.c). However, they do all seem to include
1042 * port + 2 (e.g. 0x3f2) so for a floppy device, look for
1043 * 'value + 2' in the port resources instead of the hint
1046 if (strcmp(name, "fdc") == 0)
1048 if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value))
1053 if (resource_long_value(name, unit, "maddr", &value) == 0) {
1054 if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value))
1061 if (resource_long_value(name, unit, "irq", &value) == 0) {
1062 if (acpi_match_resource_hint(child, SYS_RES_IRQ, value))
1067 if (resource_long_value(name, unit, "drq", &value) == 0) {
1068 if (acpi_match_resource_hint(child, SYS_RES_DRQ, value))
1076 /* We have a winner! */
1084 * Fetch the NUMA domain for a device by mapping the value returned by
1085 * _PXM to a NUMA domain. If the device does not have a _PXM method,
1086 * -2 is returned. If any other error occurs, -1 is returned.
1089 acpi_parse_pxm(device_t dev)
1096 handle = acpi_get_handle(dev);
1099 status = acpi_GetInteger(handle, "_PXM", &pxm);
1100 if (ACPI_SUCCESS(status))
1101 return (acpi_map_pxm_to_vm_domainid(pxm));
1102 if (status == AE_NOT_FOUND)
1109 acpi_get_cpus(device_t dev, device_t child, enum cpu_sets op, size_t setsize,
1114 d = acpi_parse_pxm(child);
1116 return (bus_generic_get_cpus(dev, child, op, setsize, cpuset));
1120 if (setsize != sizeof(cpuset_t))
1122 *cpuset = cpuset_domain[d];
1125 error = bus_generic_get_cpus(dev, child, op, setsize, cpuset);
1128 if (setsize != sizeof(cpuset_t))
1130 CPU_AND(cpuset, &cpuset_domain[d]);
1133 return (bus_generic_get_cpus(dev, child, op, setsize, cpuset));
1138 * Fetch the NUMA domain for the given device 'dev'.
1140 * If a device has a _PXM method, map that to a NUMA domain.
1141 * Otherwise, pass the request up to the parent.
1142 * If there's no matching domain or the domain cannot be
1143 * determined, return ENOENT.
1146 acpi_get_domain(device_t dev, device_t child, int *domain)
1150 d = acpi_parse_pxm(child);
1158 /* No _PXM node; go up a level */
1159 return (bus_generic_get_domain(dev, child, domain));
1163 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
1164 * duplicates, we merge any in the sysresource attach routine.
1167 acpi_sysres_alloc(device_t dev)
1169 struct resource *res;
1170 struct resource_list *rl;
1171 struct resource_list_entry *rle;
1177 * Probe/attach any sysresource devices. This would be unnecessary if we
1178 * had multi-pass probe/attach.
1180 if (device_get_children(dev, &children, &child_count) != 0)
1182 for (i = 0; i < child_count; i++) {
1183 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1184 device_probe_and_attach(children[i]);
1186 free(children, M_TEMP);
1188 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
1189 STAILQ_FOREACH(rle, rl, link) {
1190 if (rle->res != NULL) {
1191 device_printf(dev, "duplicate resource for %jx\n", rle->start);
1195 /* Only memory and IO resources are valid here. */
1196 switch (rle->type) {
1197 case SYS_RES_IOPORT:
1200 case SYS_RES_MEMORY:
1201 rm = &acpi_rman_mem;
1207 /* Pre-allocate resource and add to our rman pool. */
1208 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1209 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
1211 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1213 } else if (bootverbose)
1214 device_printf(dev, "reservation of %jx, %jx (%d) failed\n",
1215 rle->start, rle->count, rle->type);
1221 * Reserve declared resources for devices found during attach once system
1222 * resources have been allocated.
1225 acpi_reserve_resources(device_t dev)
1227 struct resource_list_entry *rle;
1228 struct resource_list *rl;
1229 struct acpi_device *ad;
1230 struct acpi_softc *sc;
1234 sc = device_get_softc(dev);
1235 if (device_get_children(dev, &children, &child_count) != 0)
1237 for (i = 0; i < child_count; i++) {
1238 ad = device_get_ivars(children[i]);
1241 /* Don't reserve system resources. */
1242 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1245 STAILQ_FOREACH(rle, rl, link) {
1247 * Don't reserve IRQ resources. There are many sticky things
1248 * to get right otherwise (e.g. IRQs for psm, atkbd, and HPET
1249 * when using legacy routing).
1251 if (rle->type == SYS_RES_IRQ)
1255 * Don't reserve the resource if it is already allocated.
1256 * The acpi_ec(4) driver can allocate its resources early
1257 * if ECDT is present.
1259 if (rle->res != NULL)
1263 * Try to reserve the resource from our parent. If this
1264 * fails because the resource is a system resource, just
1265 * let it be. The resource range is already reserved so
1266 * that other devices will not use it. If the driver
1267 * needs to allocate the resource, then
1268 * acpi_alloc_resource() will sub-alloc from the system
1271 resource_list_reserve(rl, dev, children[i], rle->type, &rle->rid,
1272 rle->start, rle->end, rle->count, 0);
1275 free(children, M_TEMP);
1276 sc->acpi_resources_reserved = 1;
1280 acpi_set_resource(device_t dev, device_t child, int type, int rid,
1281 rman_res_t start, rman_res_t count)
1283 struct acpi_softc *sc = device_get_softc(dev);
1284 struct acpi_device *ad = device_get_ivars(child);
1285 struct resource_list *rl = &ad->ad_rl;
1286 #if defined(__i386__) || defined(__amd64__)
1287 ACPI_DEVICE_INFO *devinfo;
1291 /* Ignore IRQ resources for PCI link devices. */
1292 if (type == SYS_RES_IRQ && ACPI_ID_PROBE(dev, child, pcilink_ids) != NULL)
1296 * Ignore most resources for PCI root bridges. Some BIOSes
1297 * incorrectly enumerate the memory ranges they decode as plain
1298 * memory resources instead of as ResourceProducer ranges. Other
1299 * BIOSes incorrectly list system resource entries for I/O ranges
1300 * under the PCI bridge. Do allow the one known-correct case on
1301 * x86 of a PCI bridge claiming the I/O ports used for PCI config
1304 #if defined(__i386__) || defined(__amd64__)
1305 if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) {
1306 if (ACPI_SUCCESS(AcpiGetObjectInfo(ad->ad_handle, &devinfo))) {
1307 if ((devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0) {
1308 if (!(type == SYS_RES_IOPORT && start == CONF1_ADDR_PORT)) {
1309 AcpiOsFree(devinfo);
1313 AcpiOsFree(devinfo);
1318 /* If the resource is already allocated, fail. */
1319 if (resource_list_busy(rl, type, rid))
1322 /* If the resource is already reserved, release it. */
1323 if (resource_list_reserved(rl, type, rid))
1324 resource_list_unreserve(rl, dev, child, type, rid);
1326 /* Add the resource. */
1327 end = (start + count - 1);
1328 resource_list_add(rl, type, rid, start, end, count);
1330 /* Don't reserve resources until the system resources are allocated. */
1331 if (!sc->acpi_resources_reserved)
1334 /* Don't reserve system resources. */
1335 if (ACPI_ID_PROBE(dev, child, sysres_ids) != NULL)
1339 * Don't reserve IRQ resources. There are many sticky things to
1340 * get right otherwise (e.g. IRQs for psm, atkbd, and HPET when
1341 * using legacy routing).
1343 if (type == SYS_RES_IRQ)
1347 * Reserve the resource.
1349 * XXX: Ignores failure for now. Failure here is probably a
1350 * BIOS/firmware bug?
1352 resource_list_reserve(rl, dev, child, type, &rid, start, end, count, 0);
1356 static struct resource *
1357 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
1358 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
1363 struct acpi_device *ad;
1364 struct resource_list_entry *rle;
1365 struct resource_list *rl;
1366 struct resource *res;
1367 int isdefault = RMAN_IS_DEFAULT_RANGE(start, end);
1370 * First attempt at allocating the resource. For direct children,
1371 * use resource_list_alloc() to handle reserved resources. For
1372 * other devices, pass the request up to our parent.
1374 if (bus == device_get_parent(child)) {
1375 ad = device_get_ivars(child);
1379 * Simulate the behavior of the ISA bus for direct children
1380 * devices. That is, if a non-default range is specified for
1381 * a resource that doesn't exist, use bus_set_resource() to
1382 * add the resource before allocating it. Note that these
1383 * resources will not be reserved.
1385 if (!isdefault && resource_list_find(rl, type, *rid) == NULL)
1386 resource_list_add(rl, type, *rid, start, end, count);
1387 res = resource_list_alloc(rl, bus, child, type, rid, start, end, count,
1390 if (res != NULL && type == SYS_RES_IRQ) {
1392 * Since bus_config_intr() takes immediate effect, we cannot
1393 * configure the interrupt associated with a device when we
1394 * parse the resources but have to defer it until a driver
1395 * actually allocates the interrupt via bus_alloc_resource().
1397 * XXX: Should we handle the lookup failing?
1399 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
1400 acpi_config_intr(child, &ares);
1405 * If this is an allocation of the "default" range for a given
1406 * RID, fetch the exact bounds for this resource from the
1407 * resource list entry to try to allocate the range from the
1408 * system resource regions.
1410 if (res == NULL && isdefault) {
1411 rle = resource_list_find(rl, type, *rid);
1419 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1420 start, end, count, flags);
1423 * If the first attempt failed and this is an allocation of a
1424 * specific range, try to satisfy the request via a suballocation
1425 * from our system resource regions.
1427 if (res == NULL && start + count - 1 == end)
1428 res = acpi_alloc_sysres(child, type, rid, start, end, count, flags);
1433 * Attempt to allocate a specific resource range from the system
1434 * resource ranges. Note that we only handle memory and I/O port
1438 acpi_alloc_sysres(device_t child, int type, int *rid, rman_res_t start,
1439 rman_res_t end, rman_res_t count, u_int flags)
1442 struct resource *res;
1445 case SYS_RES_IOPORT:
1448 case SYS_RES_MEMORY:
1449 rm = &acpi_rman_mem;
1455 KASSERT(start + count - 1 == end, ("wildcard resource range"));
1456 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1461 rman_set_rid(res, *rid);
1463 /* If requested, activate the resource using the parent's method. */
1464 if (flags & RF_ACTIVE)
1465 if (bus_activate_resource(child, type, *rid, res) != 0) {
1466 rman_release_resource(res);
1474 acpi_is_resource_managed(int type, struct resource *r)
1477 /* We only handle memory and IO resources through rman. */
1479 case SYS_RES_IOPORT:
1480 return (rman_is_region_manager(r, &acpi_rman_io));
1481 case SYS_RES_MEMORY:
1482 return (rman_is_region_manager(r, &acpi_rman_mem));
1488 acpi_adjust_resource(device_t bus, device_t child, int type, struct resource *r,
1489 rman_res_t start, rman_res_t end)
1492 if (acpi_is_resource_managed(type, r))
1493 return (rman_adjust_resource(r, start, end));
1494 return (bus_generic_adjust_resource(bus, child, type, r, start, end));
1498 acpi_release_resource(device_t bus, device_t child, int type, int rid,
1504 * If this resource belongs to one of our internal managers,
1505 * deactivate it and release it to the local pool.
1507 if (acpi_is_resource_managed(type, r)) {
1508 if (rman_get_flags(r) & RF_ACTIVE) {
1509 ret = bus_deactivate_resource(child, type, rid, r);
1513 return (rman_release_resource(r));
1516 return (bus_generic_rl_release_resource(bus, child, type, rid, r));
1520 acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1522 struct resource_list *rl;
1524 rl = acpi_get_rlist(bus, child);
1525 if (resource_list_busy(rl, type, rid)) {
1526 device_printf(bus, "delete_resource: Resource still owned by child"
1527 " (type=%d, rid=%d)\n", type, rid);
1530 resource_list_unreserve(rl, bus, child, type, rid);
1531 resource_list_delete(rl, type, rid);
1534 /* Allocate an IO port or memory resource, given its GAS. */
1536 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1537 struct resource **res, u_int flags)
1539 int error, res_type;
1542 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1545 /* We only support memory and IO spaces. */
1546 switch (gas->SpaceId) {
1547 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1548 res_type = SYS_RES_MEMORY;
1550 case ACPI_ADR_SPACE_SYSTEM_IO:
1551 res_type = SYS_RES_IOPORT;
1554 return (EOPNOTSUPP);
1558 * If the register width is less than 8, assume the BIOS author means
1559 * it is a bit field and just allocate a byte.
1561 if (gas->BitWidth && gas->BitWidth < 8)
1564 /* Validate the address after we're sure we support the space. */
1565 if (gas->Address == 0 || gas->BitWidth == 0)
1568 bus_set_resource(dev, res_type, *rid, gas->Address,
1570 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1575 bus_delete_resource(dev, res_type, *rid);
1580 /* Probe _HID and _CID for compatible ISA PNP ids. */
1582 acpi_isa_get_logicalid(device_t dev)
1584 ACPI_DEVICE_INFO *devinfo;
1588 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1590 /* Fetch and validate the HID. */
1591 if ((h = acpi_get_handle(dev)) == NULL ||
1592 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1595 pnpid = (devinfo->Valid & ACPI_VALID_HID) != 0 &&
1596 devinfo->HardwareId.Length >= ACPI_EISAID_STRING_SIZE ?
1597 PNP_EISAID(devinfo->HardwareId.String) : 0;
1598 AcpiOsFree(devinfo);
1600 return_VALUE (pnpid);
1604 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1606 ACPI_DEVICE_INFO *devinfo;
1607 ACPI_PNP_DEVICE_ID *ids;
1612 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1616 /* Fetch and validate the CID */
1617 if ((h = acpi_get_handle(dev)) == NULL ||
1618 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1621 if ((devinfo->Valid & ACPI_VALID_CID) == 0) {
1622 AcpiOsFree(devinfo);
1626 if (devinfo->CompatibleIdList.Count < count)
1627 count = devinfo->CompatibleIdList.Count;
1628 ids = devinfo->CompatibleIdList.Ids;
1629 for (i = 0, valid = 0; i < count; i++)
1630 if (ids[i].Length >= ACPI_EISAID_STRING_SIZE &&
1631 strncmp(ids[i].String, "PNP", 3) == 0) {
1632 *pnpid++ = PNP_EISAID(ids[i].String);
1635 AcpiOsFree(devinfo);
1637 return_VALUE (valid);
1641 acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1647 h = acpi_get_handle(dev);
1648 if (ids == NULL || h == NULL)
1650 t = acpi_get_type(dev);
1651 if (t != ACPI_TYPE_DEVICE && t != ACPI_TYPE_PROCESSOR)
1654 /* Try to match one of the array of IDs with a HID or CID. */
1655 for (i = 0; ids[i] != NULL; i++) {
1656 if (acpi_MatchHid(h, ids[i]))
1663 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1664 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1669 h = ACPI_ROOT_OBJECT;
1670 else if ((h = acpi_get_handle(dev)) == NULL)
1671 return (AE_BAD_PARAMETER);
1672 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1676 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1678 struct acpi_softc *sc;
1683 handle = acpi_get_handle(dev);
1686 * XXX If we find these devices, don't try to power them down.
1687 * The serial and IRDA ports on my T23 hang the system when
1688 * set to D3 and it appears that such legacy devices may
1689 * need special handling in their drivers.
1691 if (dstate == NULL || handle == NULL ||
1692 acpi_MatchHid(handle, "PNP0500") ||
1693 acpi_MatchHid(handle, "PNP0501") ||
1694 acpi_MatchHid(handle, "PNP0502") ||
1695 acpi_MatchHid(handle, "PNP0510") ||
1696 acpi_MatchHid(handle, "PNP0511"))
1700 * Override next state with the value from _SxD, if present.
1701 * Note illegal _S0D is evaluated because some systems expect this.
1703 sc = device_get_softc(bus);
1704 snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1705 status = acpi_GetInteger(handle, sxd, dstate);
1706 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
1707 device_printf(dev, "failed to get %s on %s: %s\n", sxd,
1708 acpi_name(handle), AcpiFormatException(status));
1715 /* Callback arg for our implementation of walking the namespace. */
1716 struct acpi_device_scan_ctx {
1717 acpi_scan_cb_t user_fn;
1723 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1725 struct acpi_device_scan_ctx *ctx;
1726 device_t dev, old_dev;
1728 ACPI_OBJECT_TYPE type;
1731 * Skip this device if we think we'll have trouble with it or it is
1732 * the parent where the scan began.
1734 ctx = (struct acpi_device_scan_ctx *)arg;
1735 if (acpi_avoid(h) || h == ctx->parent)
1738 /* If this is not a valid device type (e.g., a method), skip it. */
1739 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1741 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1742 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1746 * Call the user function with the current device. If it is unchanged
1747 * afterwards, return. Otherwise, we update the handle to the new dev.
1749 old_dev = acpi_get_device(h);
1751 status = ctx->user_fn(h, &dev, level, ctx->arg);
1752 if (ACPI_FAILURE(status) || old_dev == dev)
1755 /* Remove the old child and its connection to the handle. */
1756 if (old_dev != NULL) {
1757 device_delete_child(device_get_parent(old_dev), old_dev);
1758 AcpiDetachData(h, acpi_fake_objhandler);
1761 /* Recreate the handle association if the user created a device. */
1763 AcpiAttachData(h, acpi_fake_objhandler, dev);
1769 acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1770 acpi_scan_cb_t user_fn, void *arg)
1773 struct acpi_device_scan_ctx ctx;
1775 if (acpi_disabled("children"))
1779 h = ACPI_ROOT_OBJECT;
1780 else if ((h = acpi_get_handle(dev)) == NULL)
1781 return (AE_BAD_PARAMETER);
1782 ctx.user_fn = user_fn;
1785 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1786 acpi_device_scan_cb, NULL, &ctx, NULL));
1790 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1791 * device power states since it's close enough to ACPI.
1794 acpi_set_powerstate(device_t child, int state)
1799 h = acpi_get_handle(child);
1800 if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX)
1805 /* Ignore errors if the power methods aren't present. */
1806 status = acpi_pwr_switch_consumer(h, state);
1807 if (ACPI_SUCCESS(status)) {
1809 device_printf(child, "set ACPI power state D%d on %s\n",
1810 state, acpi_name(h));
1811 } else if (status != AE_NOT_FOUND)
1812 device_printf(child,
1813 "failed to set ACPI power state D%d on %s: %s\n", state,
1814 acpi_name(h), AcpiFormatException(status));
1820 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1822 int result, cid_count, i;
1823 uint32_t lid, cids[8];
1825 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1828 * ISA-style drivers attached to ACPI may persist and
1829 * probe manually if we return ENOENT. We never want
1830 * that to happen, so don't ever return it.
1834 /* Scan the supplied IDs for a match */
1835 lid = acpi_isa_get_logicalid(child);
1836 cid_count = acpi_isa_get_compatid(child, cids, 8);
1837 while (ids && ids->ip_id) {
1838 if (lid == ids->ip_id) {
1842 for (i = 0; i < cid_count; i++) {
1843 if (cids[i] == ids->ip_id) {
1852 if (result == 0 && ids->ip_desc)
1853 device_set_desc(child, ids->ip_desc);
1855 return_VALUE (result);
1858 #if defined(__i386__) || defined(__amd64__)
1860 * Look for a MCFG table. If it is present, use the settings for
1861 * domain (segment) 0 to setup PCI config space access via the memory
1865 acpi_enable_pcie(void)
1867 ACPI_TABLE_HEADER *hdr;
1868 ACPI_MCFG_ALLOCATION *alloc, *end;
1871 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1872 if (ACPI_FAILURE(status))
1875 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1876 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1877 while (alloc < end) {
1878 if (alloc->PciSegment == 0) {
1879 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1880 alloc->EndBusNumber);
1889 * Scan all of the ACPI namespace and attach child devices.
1891 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1892 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1893 * However, in violation of the spec, some systems place their PCI link
1894 * devices in \, so we have to walk the whole namespace. We check the
1895 * type of namespace nodes, so this should be ok.
1898 acpi_probe_children(device_t bus)
1901 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1904 * Scan the namespace and insert placeholders for all the devices that
1905 * we find. We also probe/attach any early devices.
1907 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1908 * we want to create nodes for all devices, not just those that are
1909 * currently present. (This assumes that we don't want to create/remove
1910 * devices as they appear, which might be smarter.)
1912 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1913 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
1916 /* Pre-allocate resources for our rman from any sysresource devices. */
1917 acpi_sysres_alloc(bus);
1919 /* Reserve resources already allocated to children. */
1920 acpi_reserve_resources(bus);
1922 /* Create any static children by calling device identify methods. */
1923 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1924 bus_generic_probe(bus);
1926 /* Probe/attach all children, created statically and from the namespace. */
1927 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "acpi bus_generic_attach\n"));
1928 bus_generic_attach(bus);
1930 /* Attach wake sysctls. */
1931 acpi_wake_sysctl_walk(bus);
1933 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1938 * Determine the probe order for a given device.
1941 acpi_probe_order(ACPI_HANDLE handle, int *order)
1943 ACPI_OBJECT_TYPE type;
1947 * 1. I/O port and memory system resource holders
1948 * 2. Clocks and timers (to handle early accesses)
1949 * 3. Embedded controllers (to handle early accesses)
1950 * 4. PCI Link Devices
1952 AcpiGetType(handle, &type);
1953 if (type == ACPI_TYPE_PROCESSOR)
1955 else if (acpi_MatchHid(handle, "PNP0C01") ||
1956 acpi_MatchHid(handle, "PNP0C02"))
1958 else if (acpi_MatchHid(handle, "PNP0100") ||
1959 acpi_MatchHid(handle, "PNP0103") ||
1960 acpi_MatchHid(handle, "PNP0B00"))
1962 else if (acpi_MatchHid(handle, "PNP0C09"))
1964 else if (acpi_MatchHid(handle, "PNP0C0F"))
1969 * Evaluate a child device and determine whether we might attach a device to
1973 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1975 ACPI_DEVICE_INFO *devinfo;
1976 struct acpi_device *ad;
1977 struct acpi_prw_data prw;
1978 ACPI_OBJECT_TYPE type;
1980 device_t bus, child;
1984 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1986 if (acpi_disabled("children"))
1987 return_ACPI_STATUS (AE_OK);
1989 /* Skip this device if we think we'll have trouble with it. */
1990 if (acpi_avoid(handle))
1991 return_ACPI_STATUS (AE_OK);
1993 bus = (device_t)context;
1994 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1995 handle_str = acpi_name(handle);
1997 case ACPI_TYPE_DEVICE:
1999 * Since we scan from \, be sure to skip system scope objects.
2000 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
2001 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
2002 * during the initialization and \_TZ_ is to support Notify() on it.
2004 if (strcmp(handle_str, "\\_SB_") == 0 ||
2005 strcmp(handle_str, "\\_TZ_") == 0)
2007 if (acpi_parse_prw(handle, &prw) == 0)
2008 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
2011 * Ignore devices that do not have a _HID or _CID. They should
2012 * be discovered by other buses (e.g. the PCI bus driver).
2014 if (!acpi_has_hid(handle))
2017 case ACPI_TYPE_PROCESSOR:
2018 case ACPI_TYPE_THERMAL:
2019 case ACPI_TYPE_POWER:
2021 * Create a placeholder device for this node. Sort the
2022 * placeholder so that the probe/attach passes will run
2023 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
2024 * are reserved for special objects (i.e., system
2027 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
2028 order = level * 10 + ACPI_DEV_BASE_ORDER;
2029 acpi_probe_order(handle, &order);
2030 child = BUS_ADD_CHILD(bus, order, NULL, -1);
2034 /* Associate the handle with the device_t and vice versa. */
2035 acpi_set_handle(child, handle);
2036 AcpiAttachData(handle, acpi_fake_objhandler, child);
2039 * Check that the device is present. If it's not present,
2040 * leave it disabled (so that we have a device_t attached to
2041 * the handle, but we don't probe it).
2043 * XXX PCI link devices sometimes report "present" but not
2044 * "functional" (i.e. if disabled). Go ahead and probe them
2045 * anyway since we may enable them later.
2047 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
2048 /* Never disable PCI link devices. */
2049 if (acpi_MatchHid(handle, "PNP0C0F"))
2052 * Docking stations should remain enabled since the system
2053 * may be undocked at boot.
2055 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
2058 device_disable(child);
2063 * Get the device's resource settings and attach them.
2064 * Note that if the device has _PRS but no _CRS, we need
2065 * to decide when it's appropriate to try to configure the
2066 * device. Ignore the return value here; it's OK for the
2067 * device not to have any resources.
2069 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
2071 ad = device_get_ivars(child);
2072 ad->ad_cls_class = 0xffffff;
2073 if (ACPI_SUCCESS(AcpiGetObjectInfo(handle, &devinfo))) {
2074 if ((devinfo->Valid & ACPI_VALID_CLS) != 0 &&
2075 devinfo->ClassCode.Length >= ACPI_PCICLS_STRING_SIZE) {
2076 ad->ad_cls_class = strtoul(devinfo->ClassCode.String,
2079 AcpiOsFree(devinfo);
2085 return_ACPI_STATUS (AE_OK);
2089 * AcpiAttachData() requires an object handler but never uses it. This is a
2090 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
2093 acpi_fake_objhandler(ACPI_HANDLE h, void *data)
2098 acpi_shutdown_final(void *arg, int howto)
2100 struct acpi_softc *sc = (struct acpi_softc *)arg;
2105 * XXX Shutdown code should only run on the BSP (cpuid 0).
2106 * Some chipsets do not power off the system correctly if called from
2109 if ((howto & RB_POWEROFF) != 0) {
2110 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
2111 if (ACPI_FAILURE(status)) {
2112 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2113 AcpiFormatException(status));
2116 device_printf(sc->acpi_dev, "Powering system off\n");
2117 intr = intr_disable();
2118 status = AcpiEnterSleepState(ACPI_STATE_S5);
2119 if (ACPI_FAILURE(status)) {
2121 device_printf(sc->acpi_dev, "power-off failed - %s\n",
2122 AcpiFormatException(status));
2126 device_printf(sc->acpi_dev, "power-off failed - timeout\n");
2128 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) {
2129 /* Reboot using the reset register. */
2130 status = AcpiReset();
2131 if (ACPI_SUCCESS(status)) {
2133 device_printf(sc->acpi_dev, "reset failed - timeout\n");
2134 } else if (status != AE_NOT_EXIST)
2135 device_printf(sc->acpi_dev, "reset failed - %s\n",
2136 AcpiFormatException(status));
2137 } else if (sc->acpi_do_disable && panicstr == NULL) {
2139 * Only disable ACPI if the user requested. On some systems, writing
2140 * the disable value to SMI_CMD hangs the system.
2142 device_printf(sc->acpi_dev, "Shutting down\n");
2148 acpi_enable_fixed_events(struct acpi_softc *sc)
2150 static int first_time = 1;
2152 /* Enable and clear fixed events and install handlers. */
2153 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
2154 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
2155 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
2156 acpi_event_power_button_sleep, sc);
2158 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
2160 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
2161 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
2162 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
2163 acpi_event_sleep_button_sleep, sc);
2165 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
2172 * Returns true if the device is actually present and should
2173 * be attached to. This requires the present, enabled, UI-visible
2174 * and diagnostics-passed bits to be set.
2177 acpi_DeviceIsPresent(device_t dev)
2179 ACPI_DEVICE_INFO *devinfo;
2183 if ((h = acpi_get_handle(dev)) == NULL ||
2184 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2187 /* If no _STA method, must be present */
2188 present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
2189 ACPI_DEVICE_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2191 AcpiOsFree(devinfo);
2196 * Returns true if the battery is actually present and inserted.
2199 acpi_BatteryIsPresent(device_t dev)
2201 ACPI_DEVICE_INFO *devinfo;
2205 if ((h = acpi_get_handle(dev)) == NULL ||
2206 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2209 /* If no _STA method, must be present */
2210 present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
2211 ACPI_BATTERY_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2213 AcpiOsFree(devinfo);
2218 * Returns true if a device has at least one valid device ID.
2221 acpi_has_hid(ACPI_HANDLE h)
2223 ACPI_DEVICE_INFO *devinfo;
2227 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2231 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
2233 else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
2234 if (devinfo->CompatibleIdList.Count > 0)
2237 AcpiOsFree(devinfo);
2242 * Match a HID string against a handle
2245 acpi_MatchHid(ACPI_HANDLE h, const char *hid)
2247 ACPI_DEVICE_INFO *devinfo;
2251 if (hid == NULL || h == NULL ||
2252 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2256 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
2257 strcmp(hid, devinfo->HardwareId.String) == 0)
2259 else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
2260 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
2261 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
2267 AcpiOsFree(devinfo);
2272 * Return the handle of a named object within our scope, ie. that of (parent)
2273 * or one if its parents.
2276 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
2281 /* Walk back up the tree to the root */
2283 status = AcpiGetHandle(parent, path, &r);
2284 if (ACPI_SUCCESS(status)) {
2288 /* XXX Return error here? */
2289 if (status != AE_NOT_FOUND)
2291 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
2292 return (AE_NOT_FOUND);
2298 * Allocate a buffer with a preset data size.
2301 acpi_AllocBuffer(int size)
2305 if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
2308 buf->Pointer = (void *)(buf + 1);
2313 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
2316 ACPI_OBJECT_LIST args;
2318 arg1.Type = ACPI_TYPE_INTEGER;
2319 arg1.Integer.Value = number;
2321 args.Pointer = &arg1;
2323 return (AcpiEvaluateObject(handle, path, &args, NULL));
2327 * Evaluate a path that should return an integer.
2330 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
2337 handle = ACPI_ROOT_OBJECT;
2340 * Assume that what we've been pointed at is an Integer object, or
2341 * a method that will return an Integer.
2343 buf.Pointer = ¶m;
2344 buf.Length = sizeof(param);
2345 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2346 if (ACPI_SUCCESS(status)) {
2347 if (param.Type == ACPI_TYPE_INTEGER)
2348 *number = param.Integer.Value;
2354 * In some applications, a method that's expected to return an Integer
2355 * may instead return a Buffer (probably to simplify some internal
2356 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
2357 * convert it into an Integer as best we can.
2361 if (status == AE_BUFFER_OVERFLOW) {
2362 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
2363 status = AE_NO_MEMORY;
2365 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2366 if (ACPI_SUCCESS(status))
2367 status = acpi_ConvertBufferToInteger(&buf, number);
2368 AcpiOsFree(buf.Pointer);
2375 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2381 p = (ACPI_OBJECT *)bufp->Pointer;
2382 if (p->Type == ACPI_TYPE_INTEGER) {
2383 *number = p->Integer.Value;
2386 if (p->Type != ACPI_TYPE_BUFFER)
2388 if (p->Buffer.Length > sizeof(int))
2389 return (AE_BAD_DATA);
2392 val = p->Buffer.Pointer;
2393 for (i = 0; i < p->Buffer.Length; i++)
2394 *number += val[i] << (i * 8);
2399 * Iterate over the elements of an a package object, calling the supplied
2400 * function for each element.
2402 * XXX possible enhancement might be to abort traversal on error.
2405 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2406 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2411 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2412 return (AE_BAD_PARAMETER);
2414 /* Iterate over components */
2416 comp = pkg->Package.Elements;
2417 for (; i < pkg->Package.Count; i++, comp++)
2424 * Find the (index)th resource object in a set.
2427 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2432 rp = (ACPI_RESOURCE *)buf->Pointer;
2436 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2437 return (AE_BAD_PARAMETER);
2439 /* Check for terminator */
2440 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2441 return (AE_NOT_FOUND);
2442 rp = ACPI_NEXT_RESOURCE(rp);
2451 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2453 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2454 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2455 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2458 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2461 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2466 /* Initialise the buffer if necessary. */
2467 if (buf->Pointer == NULL) {
2468 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2469 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2470 return (AE_NO_MEMORY);
2471 rp = (ACPI_RESOURCE *)buf->Pointer;
2472 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2473 rp->Length = ACPI_RS_SIZE_MIN;
2479 * Scan the current buffer looking for the terminator.
2480 * This will either find the terminator or hit the end
2481 * of the buffer and return an error.
2483 rp = (ACPI_RESOURCE *)buf->Pointer;
2485 /* Range check, don't go outside the buffer */
2486 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2487 return (AE_BAD_PARAMETER);
2488 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2490 rp = ACPI_NEXT_RESOURCE(rp);
2494 * Check the size of the buffer and expand if required.
2497 * size of existing resources before terminator +
2498 * size of new resource and header +
2499 * size of terminator.
2501 * Note that this loop should really only run once, unless
2502 * for some reason we are stuffing a *really* huge resource.
2504 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2505 res->Length + ACPI_RS_SIZE_NO_DATA +
2506 ACPI_RS_SIZE_MIN) >= buf->Length) {
2507 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2508 return (AE_NO_MEMORY);
2509 bcopy(buf->Pointer, newp, buf->Length);
2510 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2511 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
2512 AcpiOsFree(buf->Pointer);
2513 buf->Pointer = newp;
2514 buf->Length += buf->Length;
2517 /* Insert the new resource. */
2518 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2520 /* And add the terminator. */
2521 rp = ACPI_NEXT_RESOURCE(rp);
2522 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2523 rp->Length = ACPI_RS_SIZE_MIN;
2529 acpi_EvaluateOSC(ACPI_HANDLE handle, uint8_t *uuid, int revision, int count,
2530 uint32_t *caps_in, uint32_t *caps_out, bool query)
2532 ACPI_OBJECT arg[4], *ret;
2533 ACPI_OBJECT_LIST arglist;
2537 arglist.Pointer = arg;
2539 arg[0].Type = ACPI_TYPE_BUFFER;
2540 arg[0].Buffer.Length = ACPI_UUID_LENGTH;
2541 arg[0].Buffer.Pointer = uuid;
2542 arg[1].Type = ACPI_TYPE_INTEGER;
2543 arg[1].Integer.Value = revision;
2544 arg[2].Type = ACPI_TYPE_INTEGER;
2545 arg[2].Integer.Value = count;
2546 arg[3].Type = ACPI_TYPE_BUFFER;
2547 arg[3].Buffer.Length = count * sizeof(*caps_in);
2548 arg[3].Buffer.Pointer = (uint8_t *)caps_in;
2549 caps_in[0] = query ? 1 : 0;
2551 buf.Length = ACPI_ALLOCATE_BUFFER;
2552 status = AcpiEvaluateObjectTyped(handle, "_OSC", &arglist, &buf,
2554 if (ACPI_FAILURE(status))
2556 if (caps_out != NULL) {
2558 if (ret->Buffer.Length != count * sizeof(*caps_out)) {
2559 AcpiOsFree(buf.Pointer);
2560 return (AE_BUFFER_OVERFLOW);
2562 bcopy(ret->Buffer.Pointer, caps_out, ret->Buffer.Length);
2564 AcpiOsFree(buf.Pointer);
2569 * Set interrupt model.
2572 acpi_SetIntrModel(int model)
2575 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2579 * Walk subtables of a table and call a callback routine for each
2580 * subtable. The caller should provide the first subtable and a
2581 * pointer to the end of the table. This can be used to walk tables
2582 * such as MADT and SRAT that use subtable entries.
2585 acpi_walk_subtables(void *first, void *end, acpi_subtable_handler *handler,
2588 ACPI_SUBTABLE_HEADER *entry;
2590 for (entry = first; (void *)entry < end; ) {
2591 /* Avoid an infinite loop if we hit a bogus entry. */
2592 if (entry->Length < sizeof(ACPI_SUBTABLE_HEADER))
2595 handler(entry, arg);
2596 entry = ACPI_ADD_PTR(ACPI_SUBTABLE_HEADER, entry, entry->Length);
2601 * DEPRECATED. This interface has serious deficiencies and will be
2604 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2605 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2608 acpi_SetSleepState(struct acpi_softc *sc, int state)
2613 device_printf(sc->acpi_dev,
2614 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2617 return (acpi_EnterSleepState(sc, state));
2620 #if defined(__amd64__) || defined(__i386__)
2622 acpi_sleep_force_task(void *context)
2624 struct acpi_softc *sc = (struct acpi_softc *)context;
2626 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2627 device_printf(sc->acpi_dev, "force sleep state S%d failed\n",
2628 sc->acpi_next_sstate);
2632 acpi_sleep_force(void *arg)
2634 struct acpi_softc *sc = (struct acpi_softc *)arg;
2636 device_printf(sc->acpi_dev,
2637 "suspend request timed out, forcing sleep now\n");
2639 * XXX Suspending from callout causes freezes in DEVICE_SUSPEND().
2640 * Suspend from acpi_task thread instead.
2642 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
2643 acpi_sleep_force_task, sc)))
2644 device_printf(sc->acpi_dev, "AcpiOsExecute() for sleeping failed\n");
2649 * Request that the system enter the given suspend state. All /dev/apm
2650 * devices and devd(8) will be notified. Userland then has a chance to
2651 * save state and acknowledge the request. The system sleeps once all
2655 acpi_ReqSleepState(struct acpi_softc *sc, int state)
2657 #if defined(__amd64__) || defined(__i386__)
2658 struct apm_clone_data *clone;
2661 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
2663 if (!acpi_sleep_states[state])
2664 return (EOPNOTSUPP);
2667 * If a reboot/shutdown/suspend request is already in progress or
2668 * suspend is blocked due to an upcoming shutdown, just return.
2670 if (rebooting || sc->acpi_next_sstate != 0 || suspend_blocked) {
2674 /* Wait until sleep is enabled. */
2675 while (sc->acpi_sleep_disabled) {
2681 sc->acpi_next_sstate = state;
2683 /* S5 (soft-off) should be entered directly with no waiting. */
2684 if (state == ACPI_STATE_S5) {
2686 status = acpi_EnterSleepState(sc, state);
2687 return (ACPI_SUCCESS(status) ? 0 : ENXIO);
2690 /* Record the pending state and notify all apm devices. */
2691 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2692 clone->notify_status = APM_EV_NONE;
2693 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
2694 selwakeuppri(&clone->sel_read, PZERO);
2695 KNOTE_LOCKED(&clone->sel_read.si_note, 0);
2699 /* If devd(8) is not running, immediately enter the sleep state. */
2700 if (!devctl_process_running()) {
2702 status = acpi_EnterSleepState(sc, state);
2703 return (ACPI_SUCCESS(status) ? 0 : ENXIO);
2707 * Set a timeout to fire if userland doesn't ack the suspend request
2708 * in time. This way we still eventually go to sleep if we were
2709 * overheating or running low on battery, even if userland is hung.
2710 * We cancel this timeout once all userland acks are in or the
2711 * suspend request is aborted.
2713 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2716 /* Now notify devd(8) also. */
2717 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2721 /* This platform does not support acpi suspend/resume. */
2722 return (EOPNOTSUPP);
2727 * Acknowledge (or reject) a pending sleep state. The caller has
2728 * prepared for suspend and is now ready for it to proceed. If the
2729 * error argument is non-zero, it indicates suspend should be cancelled
2730 * and gives an errno value describing why. Once all votes are in,
2731 * we suspend the system.
2734 acpi_AckSleepState(struct apm_clone_data *clone, int error)
2736 #if defined(__amd64__) || defined(__i386__)
2737 struct acpi_softc *sc;
2740 /* If no pending sleep state, return an error. */
2742 sc = clone->acpi_sc;
2743 if (sc->acpi_next_sstate == 0) {
2748 /* Caller wants to abort suspend process. */
2750 sc->acpi_next_sstate = 0;
2751 callout_stop(&sc->susp_force_to);
2752 device_printf(sc->acpi_dev,
2753 "listener on %s cancelled the pending suspend\n",
2754 devtoname(clone->cdev));
2760 * Mark this device as acking the suspend request. Then, walk through
2761 * all devices, seeing if they agree yet. We only count devices that
2762 * are writable since read-only devices couldn't ack the request.
2765 clone->notify_status = APM_EV_ACKED;
2766 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2767 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2768 clone->notify_status != APM_EV_ACKED) {
2774 /* If all devices have voted "yes", we will suspend now. */
2776 callout_stop(&sc->susp_force_to);
2780 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2785 /* This platform does not support acpi suspend/resume. */
2786 return (EOPNOTSUPP);
2791 acpi_sleep_enable(void *arg)
2793 struct acpi_softc *sc = (struct acpi_softc *)arg;
2795 ACPI_LOCK_ASSERT(acpi);
2797 /* Reschedule if the system is not fully up and running. */
2798 if (!AcpiGbl_SystemAwakeAndRunning) {
2799 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
2803 sc->acpi_sleep_disabled = FALSE;
2807 acpi_sleep_disable(struct acpi_softc *sc)
2811 /* Fail if the system is not fully up and running. */
2812 if (!AcpiGbl_SystemAwakeAndRunning)
2816 status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK;
2817 sc->acpi_sleep_disabled = TRUE;
2823 enum acpi_sleep_state {
2826 ACPI_SS_DEV_SUSPEND,
2832 * Enter the desired system sleep state.
2834 * Currently we support S1-S5 but S4 is only S4BIOS
2837 acpi_EnterSleepState(struct acpi_softc *sc, int state)
2841 ACPI_EVENT_STATUS power_button_status;
2842 enum acpi_sleep_state slp_state;
2845 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2847 if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
2848 return_ACPI_STATUS (AE_BAD_PARAMETER);
2849 if (!acpi_sleep_states[state]) {
2850 device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n",
2852 return (AE_SUPPORT);
2855 /* Re-entry once we're suspending is not allowed. */
2856 status = acpi_sleep_disable(sc);
2857 if (ACPI_FAILURE(status)) {
2858 device_printf(sc->acpi_dev,
2859 "suspend request ignored (not ready yet)\n");
2863 if (state == ACPI_STATE_S5) {
2865 * Shut down cleanly and power off. This will call us back through the
2866 * shutdown handlers.
2868 shutdown_nice(RB_POWEROFF);
2869 return_ACPI_STATUS (AE_OK);
2872 EVENTHANDLER_INVOKE(power_suspend_early);
2874 EVENTHANDLER_INVOKE(power_suspend);
2876 #ifdef EARLY_AP_STARTUP
2877 MPASS(mp_ncpus == 1 || smp_started);
2878 thread_lock(curthread);
2879 sched_bind(curthread, 0);
2880 thread_unlock(curthread);
2883 thread_lock(curthread);
2884 sched_bind(curthread, 0);
2885 thread_unlock(curthread);
2890 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2891 * drivers need this.
2895 slp_state = ACPI_SS_NONE;
2897 sc->acpi_sstate = state;
2899 /* Enable any GPEs as appropriate and requested by the user. */
2900 acpi_wake_prep_walk(state);
2901 slp_state = ACPI_SS_GPE_SET;
2904 * Inform all devices that we are going to sleep. If at least one
2905 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2907 * XXX Note that a better two-pass approach with a 'veto' pass
2908 * followed by a "real thing" pass would be better, but the current
2909 * bus interface does not provide for this.
2911 if (DEVICE_SUSPEND(root_bus) != 0) {
2912 device_printf(sc->acpi_dev, "device_suspend failed\n");
2915 slp_state = ACPI_SS_DEV_SUSPEND;
2917 /* If testing device suspend only, back out of everything here. */
2918 if (acpi_susp_bounce)
2921 status = AcpiEnterSleepStatePrep(state);
2922 if (ACPI_FAILURE(status)) {
2923 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2924 AcpiFormatException(status));
2927 slp_state = ACPI_SS_SLP_PREP;
2929 if (sc->acpi_sleep_delay > 0)
2930 DELAY(sc->acpi_sleep_delay * 1000000);
2932 intr = intr_disable();
2933 if (state != ACPI_STATE_S1) {
2934 sleep_result = acpi_sleep_machdep(sc, state);
2935 acpi_wakeup_machdep(sc, state, sleep_result, 0);
2938 * XXX According to ACPI specification SCI_EN bit should be restored
2939 * by ACPI platform (BIOS, firmware) to its pre-sleep state.
2940 * Unfortunately some BIOSes fail to do that and that leads to
2941 * unexpected and serious consequences during wake up like a system
2942 * getting stuck in SMI handlers.
2943 * This hack is picked up from Linux, which claims that it follows
2946 if (sleep_result == 1 && state != ACPI_STATE_S4)
2947 AcpiWriteBitRegister(ACPI_BITREG_SCI_ENABLE, ACPI_ENABLE_EVENT);
2949 AcpiLeaveSleepStatePrep(state);
2951 if (sleep_result == 1 && state == ACPI_STATE_S3) {
2953 * Prevent mis-interpretation of the wakeup by power button
2954 * as a request for power off.
2955 * Ideally we should post an appropriate wakeup event,
2956 * perhaps using acpi_event_power_button_wake or alike.
2958 * Clearing of power button status after wakeup is mandated
2959 * by ACPI specification in section "Fixed Power Button".
2961 * XXX As of ACPICA 20121114 AcpiGetEventStatus provides
2962 * status as 0/1 corressponding to inactive/active despite
2963 * its type being ACPI_EVENT_STATUS. In other words,
2964 * we should not test for ACPI_EVENT_FLAG_SET for time being.
2966 if (ACPI_SUCCESS(AcpiGetEventStatus(ACPI_EVENT_POWER_BUTTON,
2967 &power_button_status)) && power_button_status != 0) {
2968 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
2969 device_printf(sc->acpi_dev,
2970 "cleared fixed power button status\n");
2976 /* call acpi_wakeup_machdep() again with interrupt enabled */
2977 acpi_wakeup_machdep(sc, state, sleep_result, 1);
2979 if (sleep_result == -1)
2982 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2983 if (state == ACPI_STATE_S4)
2986 status = AcpiEnterSleepState(state);
2987 AcpiLeaveSleepStatePrep(state);
2989 if (ACPI_FAILURE(status)) {
2990 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2991 AcpiFormatException(status));
2995 slp_state = ACPI_SS_SLEPT;
2998 * Back out state according to how far along we got in the suspend
2999 * process. This handles both the error and success cases.
3002 if (slp_state >= ACPI_SS_GPE_SET) {
3003 acpi_wake_prep_walk(state);
3004 sc->acpi_sstate = ACPI_STATE_S0;
3006 if (slp_state >= ACPI_SS_DEV_SUSPEND)
3007 DEVICE_RESUME(root_bus);
3008 if (slp_state >= ACPI_SS_SLP_PREP)
3009 AcpiLeaveSleepState(state);
3010 if (slp_state >= ACPI_SS_SLEPT) {
3011 acpi_resync_clock(sc);
3012 acpi_enable_fixed_events(sc);
3014 sc->acpi_next_sstate = 0;
3018 #ifdef EARLY_AP_STARTUP
3019 thread_lock(curthread);
3020 sched_unbind(curthread);
3021 thread_unlock(curthread);
3024 thread_lock(curthread);
3025 sched_unbind(curthread);
3026 thread_unlock(curthread);
3032 EVENTHANDLER_INVOKE(power_resume);
3034 /* Allow another sleep request after a while. */
3035 callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
3037 /* Run /etc/rc.resume after we are back. */
3038 if (devctl_process_running())
3039 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
3041 return_ACPI_STATUS (status);
3045 acpi_resync_clock(struct acpi_softc *sc)
3049 * Warm up timecounter again and reset system clock.
3051 (void)timecounter->tc_get_timecount(timecounter);
3052 (void)timecounter->tc_get_timecount(timecounter);
3053 inittodr(time_second + sc->acpi_sleep_delay);
3056 /* Enable or disable the device's wake GPE. */
3058 acpi_wake_set_enable(device_t dev, int enable)
3060 struct acpi_prw_data prw;
3064 /* Make sure the device supports waking the system and get the GPE. */
3065 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
3068 flags = acpi_get_flags(dev);
3070 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
3072 if (ACPI_FAILURE(status)) {
3073 device_printf(dev, "enable wake failed\n");
3076 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
3078 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
3080 if (ACPI_FAILURE(status)) {
3081 device_printf(dev, "disable wake failed\n");
3084 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
3091 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
3093 struct acpi_prw_data prw;
3096 /* Check that this is a wake-capable device and get its GPE. */
3097 if (acpi_parse_prw(handle, &prw) != 0)
3099 dev = acpi_get_device(handle);
3102 * The destination sleep state must be less than (i.e., higher power)
3103 * or equal to the value specified by _PRW. If this GPE cannot be
3104 * enabled for the next sleep state, then disable it. If it can and
3105 * the user requested it be enabled, turn on any required power resources
3108 if (sstate > prw.lowest_wake) {
3109 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
3111 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
3112 acpi_name(handle), sstate);
3113 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
3114 acpi_pwr_wake_enable(handle, 1);
3115 acpi_SetInteger(handle, "_PSW", 1);
3117 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
3118 acpi_name(handle), sstate);
3125 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
3127 struct acpi_prw_data prw;
3131 * Check that this is a wake-capable device and get its GPE. Return
3132 * now if the user didn't enable this device for wake.
3134 if (acpi_parse_prw(handle, &prw) != 0)
3136 dev = acpi_get_device(handle);
3137 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
3141 * If this GPE couldn't be enabled for the previous sleep state, it was
3142 * disabled before going to sleep so re-enable it. If it was enabled,
3143 * clear _PSW and turn off any power resources it used.
3145 if (sstate > prw.lowest_wake) {
3146 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
3148 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
3150 acpi_SetInteger(handle, "_PSW", 0);
3151 acpi_pwr_wake_enable(handle, 0);
3153 device_printf(dev, "run_prep cleaned up for %s\n",
3161 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
3165 /* If suspending, run the sleep prep function, otherwise wake. */
3166 sstate = *(int *)context;
3167 if (AcpiGbl_SystemAwakeAndRunning)
3168 acpi_wake_sleep_prep(handle, sstate);
3170 acpi_wake_run_prep(handle, sstate);
3174 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
3176 acpi_wake_prep_walk(int sstate)
3178 ACPI_HANDLE sb_handle;
3180 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
3181 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
3182 acpi_wake_prep, NULL, &sstate, NULL);
3186 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
3188 acpi_wake_sysctl_walk(device_t dev)
3190 int error, i, numdevs;
3195 error = device_get_children(dev, &devlist, &numdevs);
3196 if (error != 0 || numdevs == 0) {
3198 free(devlist, M_TEMP);
3201 for (i = 0; i < numdevs; i++) {
3203 acpi_wake_sysctl_walk(child);
3204 if (!device_is_attached(child))
3206 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
3207 if (ACPI_SUCCESS(status)) {
3208 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
3209 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
3210 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
3211 acpi_wake_set_sysctl, "I", "Device set to wake the system");
3214 free(devlist, M_TEMP);
3219 /* Enable or disable wake from userland. */
3221 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
3226 dev = (device_t)arg1;
3227 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
3229 error = sysctl_handle_int(oidp, &enable, 0, req);
3230 if (error != 0 || req->newptr == NULL)
3232 if (enable != 0 && enable != 1)
3235 return (acpi_wake_set_enable(dev, enable));
3238 /* Parse a device's _PRW into a structure. */
3240 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
3243 ACPI_BUFFER prw_buffer;
3244 ACPI_OBJECT *res, *res2;
3245 int error, i, power_count;
3247 if (h == NULL || prw == NULL)
3251 * The _PRW object (7.2.9) is only required for devices that have the
3252 * ability to wake the system from a sleeping state.
3255 prw_buffer.Pointer = NULL;
3256 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
3257 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
3258 if (ACPI_FAILURE(status))
3260 res = (ACPI_OBJECT *)prw_buffer.Pointer;
3263 if (!ACPI_PKG_VALID(res, 2))
3267 * Element 1 of the _PRW object:
3268 * The lowest power system sleeping state that can be entered while still
3269 * providing wake functionality. The sleeping state being entered must
3270 * be less than (i.e., higher power) or equal to this value.
3272 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
3276 * Element 0 of the _PRW object:
3278 switch (res->Package.Elements[0].Type) {
3279 case ACPI_TYPE_INTEGER:
3281 * If the data type of this package element is numeric, then this
3282 * _PRW package element is the bit index in the GPEx_EN, in the
3283 * GPE blocks described in the FADT, of the enable bit that is
3284 * enabled for the wake event.
3286 prw->gpe_handle = NULL;
3287 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
3290 case ACPI_TYPE_PACKAGE:
3292 * If the data type of this package element is a package, then this
3293 * _PRW package element is itself a package containing two
3294 * elements. The first is an object reference to the GPE Block
3295 * device that contains the GPE that will be triggered by the wake
3296 * event. The second element is numeric and it contains the bit
3297 * index in the GPEx_EN, in the GPE Block referenced by the
3298 * first element in the package, of the enable bit that is enabled for
3301 * For example, if this field is a package then it is of the form:
3302 * Package() {\_SB.PCI0.ISA.GPE, 2}
3304 res2 = &res->Package.Elements[0];
3305 if (!ACPI_PKG_VALID(res2, 2))
3307 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
3308 if (prw->gpe_handle == NULL)
3310 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
3318 /* Elements 2 to N of the _PRW object are power resources. */
3319 power_count = res->Package.Count - 2;
3320 if (power_count > ACPI_PRW_MAX_POWERRES) {
3321 printf("ACPI device %s has too many power resources\n", acpi_name(h));
3324 prw->power_res_count = power_count;
3325 for (i = 0; i < power_count; i++)
3326 prw->power_res[i] = res->Package.Elements[i];
3329 if (prw_buffer.Pointer != NULL)
3330 AcpiOsFree(prw_buffer.Pointer);
3335 * ACPI Event Handlers
3338 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
3341 acpi_system_eventhandler_sleep(void *arg, int state)
3343 struct acpi_softc *sc = (struct acpi_softc *)arg;
3346 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
3348 /* Check if button action is disabled or unknown. */
3349 if (state == ACPI_STATE_UNKNOWN)
3352 /* Request that the system prepare to enter the given suspend state. */
3353 ret = acpi_ReqSleepState(sc, state);
3355 device_printf(sc->acpi_dev,
3356 "request to enter state S%d failed (err %d)\n", state, ret);
3362 acpi_system_eventhandler_wakeup(void *arg, int state)
3365 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
3367 /* Currently, nothing to do for wakeup. */
3373 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
3376 acpi_invoke_sleep_eventhandler(void *context)
3379 EVENTHANDLER_INVOKE(acpi_sleep_event, *(int *)context);
3383 acpi_invoke_wake_eventhandler(void *context)
3386 EVENTHANDLER_INVOKE(acpi_wakeup_event, *(int *)context);
3390 acpi_event_power_button_sleep(void *context)
3392 struct acpi_softc *sc = (struct acpi_softc *)context;
3394 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3396 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3397 acpi_invoke_sleep_eventhandler, &sc->acpi_power_button_sx)))
3398 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3399 return_VALUE (ACPI_INTERRUPT_HANDLED);
3403 acpi_event_power_button_wake(void *context)
3405 struct acpi_softc *sc = (struct acpi_softc *)context;
3407 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3409 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3410 acpi_invoke_wake_eventhandler, &sc->acpi_power_button_sx)))
3411 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3412 return_VALUE (ACPI_INTERRUPT_HANDLED);
3416 acpi_event_sleep_button_sleep(void *context)
3418 struct acpi_softc *sc = (struct acpi_softc *)context;
3420 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3422 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3423 acpi_invoke_sleep_eventhandler, &sc->acpi_sleep_button_sx)))
3424 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3425 return_VALUE (ACPI_INTERRUPT_HANDLED);
3429 acpi_event_sleep_button_wake(void *context)
3431 struct acpi_softc *sc = (struct acpi_softc *)context;
3433 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3435 if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3436 acpi_invoke_wake_eventhandler, &sc->acpi_sleep_button_sx)))
3437 return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3438 return_VALUE (ACPI_INTERRUPT_HANDLED);
3442 * XXX This static buffer is suboptimal. There is no locking so only
3443 * use this for single-threaded callers.
3446 acpi_name(ACPI_HANDLE handle)
3449 static char data[256];
3451 buf.Length = sizeof(data);
3454 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
3456 return ("(unknown)");
3460 * Debugging/bug-avoidance. Avoid trying to fetch info on various
3461 * parts of the namespace.
3464 acpi_avoid(ACPI_HANDLE handle)
3466 char *cp, *env, *np;
3469 np = acpi_name(handle);
3472 if ((env = kern_getenv("debug.acpi.avoid")) == NULL)
3475 /* Scan the avoid list checking for a match */
3478 while (*cp != 0 && isspace(*cp))
3483 while (cp[len] != 0 && !isspace(cp[len]))
3485 if (!strncmp(cp, np, len)) {
3497 * Debugging/bug-avoidance. Disable ACPI subsystem components.
3500 acpi_disabled(char *subsys)
3505 if ((env = kern_getenv("debug.acpi.disabled")) == NULL)
3507 if (strcmp(env, "all") == 0) {
3512 /* Scan the disable list, checking for a match. */
3515 while (*cp != '\0' && isspace(*cp))
3520 while (cp[len] != '\0' && !isspace(cp[len]))
3522 if (strncmp(cp, subsys, len) == 0) {
3534 acpi_lookup(void *arg, const char *name, device_t *dev)
3542 * Allow any handle name that is specified as an absolute path and
3543 * starts with '\'. We could restrict this to \_SB and friends,
3544 * but see acpi_probe_children() for notes on why we scan the entire
3545 * namespace for devices.
3547 * XXX: The pathname argument to AcpiGetHandle() should be fixed to
3550 if (name[0] != '\\')
3552 if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, __DECONST(char *, name),
3555 *dev = acpi_get_device(handle);
3559 * Control interface.
3561 * We multiplex ioctls for all participating ACPI devices here. Individual
3562 * drivers wanting to be accessible via /dev/acpi should use the
3563 * register/deregister interface to make their handlers visible.
3565 struct acpi_ioctl_hook
3567 TAILQ_ENTRY(acpi_ioctl_hook) link;
3573 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
3574 static int acpi_ioctl_hooks_initted;
3577 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
3579 struct acpi_ioctl_hook *hp;
3581 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
3588 if (acpi_ioctl_hooks_initted == 0) {
3589 TAILQ_INIT(&acpi_ioctl_hooks);
3590 acpi_ioctl_hooks_initted = 1;
3592 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
3599 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
3601 struct acpi_ioctl_hook *hp;
3604 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
3605 if (hp->cmd == cmd && hp->fn == fn)
3609 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
3610 free(hp, M_ACPIDEV);
3616 acpiopen(struct cdev *dev, int flag, int fmt, struct thread *td)
3622 acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td)
3628 acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
3630 struct acpi_softc *sc;
3631 struct acpi_ioctl_hook *hp;
3639 * Scan the list of registered ioctls, looking for handlers.
3642 if (acpi_ioctl_hooks_initted)
3643 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3649 return (hp->fn(cmd, addr, hp->arg));
3652 * Core ioctls are not permitted for non-writable user.
3653 * Currently, other ioctls just fetch information.
3654 * Not changing system behavior.
3656 if ((flag & FWRITE) == 0)
3659 /* Core system ioctls. */
3661 case ACPIIO_REQSLPSTATE:
3662 state = *(int *)addr;
3663 if (state != ACPI_STATE_S5)
3664 return (acpi_ReqSleepState(sc, state));
3665 device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n");
3668 case ACPIIO_ACKSLPSTATE:
3669 error = *(int *)addr;
3670 error = acpi_AckSleepState(sc->acpi_clone, error);
3672 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3673 state = *(int *)addr;
3674 if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX)
3676 if (!acpi_sleep_states[state])
3677 return (EOPNOTSUPP);
3678 if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
3690 acpi_sname2sstate(const char *sname)
3694 if (toupper(sname[0]) == 'S') {
3695 sstate = sname[1] - '0';
3696 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 &&
3699 } else if (strcasecmp(sname, "NONE") == 0)
3700 return (ACPI_STATE_UNKNOWN);
3705 acpi_sstate2sname(int sstate)
3707 static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" };
3709 if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5)
3710 return (snames[sstate]);
3711 else if (sstate == ACPI_STATE_UNKNOWN)
3717 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3723 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3724 for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
3725 if (acpi_sleep_states[state])
3726 sbuf_printf(&sb, "%s ", acpi_sstate2sname(state));
3729 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3735 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3737 char sleep_state[10];
3738 int error, new_state, old_state;
3740 old_state = *(int *)oidp->oid_arg1;
3741 strlcpy(sleep_state, acpi_sstate2sname(old_state), sizeof(sleep_state));
3742 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3743 if (error == 0 && req->newptr != NULL) {
3744 new_state = acpi_sname2sstate(sleep_state);
3745 if (new_state < ACPI_STATE_S1)
3747 if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state])
3748 return (EOPNOTSUPP);
3749 if (new_state != old_state)
3750 *(int *)oidp->oid_arg1 = new_state;
3755 /* Inform devctl(4) when we receive a Notify. */
3757 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3759 char notify_buf[16];
3760 ACPI_BUFFER handle_buf;
3763 if (subsystem == NULL)
3766 handle_buf.Pointer = NULL;
3767 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3768 status = AcpiNsHandleToPathname(h, &handle_buf, FALSE);
3769 if (ACPI_FAILURE(status))
3771 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
3772 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
3773 AcpiOsFree(handle_buf.Pointer);
3778 * Support for parsing debug options from the kernel environment.
3780 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3781 * by specifying the names of the bits in the debug.acpi.layer and
3782 * debug.acpi.level environment variables. Bits may be unset by
3783 * prefixing the bit name with !.
3791 static struct debugtag dbg_layer[] = {
3792 {"ACPI_UTILITIES", ACPI_UTILITIES},
3793 {"ACPI_HARDWARE", ACPI_HARDWARE},
3794 {"ACPI_EVENTS", ACPI_EVENTS},
3795 {"ACPI_TABLES", ACPI_TABLES},
3796 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3797 {"ACPI_PARSER", ACPI_PARSER},
3798 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3799 {"ACPI_EXECUTER", ACPI_EXECUTER},
3800 {"ACPI_RESOURCES", ACPI_RESOURCES},
3801 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3802 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3803 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3804 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3806 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3807 {"ACPI_BATTERY", ACPI_BATTERY},
3808 {"ACPI_BUS", ACPI_BUS},
3809 {"ACPI_BUTTON", ACPI_BUTTON},
3810 {"ACPI_EC", ACPI_EC},
3811 {"ACPI_FAN", ACPI_FAN},
3812 {"ACPI_POWERRES", ACPI_POWERRES},
3813 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3814 {"ACPI_THERMAL", ACPI_THERMAL},
3815 {"ACPI_TIMER", ACPI_TIMER},
3816 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3820 static struct debugtag dbg_level[] = {
3821 {"ACPI_LV_INIT", ACPI_LV_INIT},
3822 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3823 {"ACPI_LV_INFO", ACPI_LV_INFO},
3824 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR},
3825 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3827 /* Trace verbosity level 1 [Standard Trace Level] */
3828 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3829 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3830 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3831 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3832 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3833 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3834 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3835 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3836 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3837 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3838 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3839 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3840 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3841 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3842 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3844 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3845 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3846 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3847 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3848 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3849 {"ACPI_LV_ALL", ACPI_LV_ALL},
3851 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3852 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3853 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3854 {"ACPI_LV_IO", ACPI_LV_IO},
3855 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3856 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3858 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3859 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
3860 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
3861 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
3862 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
3863 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
3868 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
3880 while (*ep && !isspace(*ep))
3891 for (i = 0; tag[i].name != NULL; i++) {
3892 if (!strncmp(cp, tag[i].name, l)) {
3894 *flag |= tag[i].value;
3896 *flag &= ~tag[i].value;
3904 acpi_set_debugging(void *junk)
3906 char *layer, *level;
3913 layer = kern_getenv("debug.acpi.layer");
3914 level = kern_getenv("debug.acpi.level");
3915 if (layer == NULL && level == NULL)
3918 printf("ACPI set debug");
3919 if (layer != NULL) {
3920 if (strcmp("NONE", layer) != 0)
3921 printf(" layer '%s'", layer);
3922 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
3925 if (level != NULL) {
3926 if (strcmp("NONE", level) != 0)
3927 printf(" level '%s'", level);
3928 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
3934 SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3938 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
3941 struct debugtag *tag;
3945 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
3947 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
3948 tag = &dbg_layer[0];
3949 dbg = &AcpiDbgLayer;
3951 tag = &dbg_level[0];
3952 dbg = &AcpiDbgLevel;
3955 /* Get old values if this is a get request. */
3956 ACPI_SERIAL_BEGIN(acpi);
3958 sbuf_cpy(&sb, "NONE");
3959 } else if (req->newptr == NULL) {
3960 for (; tag->name != NULL; tag++) {
3961 if ((*dbg & tag->value) == tag->value)
3962 sbuf_printf(&sb, "%s ", tag->name);
3967 strlcpy(temp, sbuf_data(&sb), sizeof(temp));
3970 error = sysctl_handle_string(oidp, temp, sizeof(temp), req);
3972 /* Check for error or no change */
3973 if (error == 0 && req->newptr != NULL) {
3975 kern_setenv((char *)oidp->oid_arg1, temp);
3976 acpi_set_debugging(NULL);
3978 ACPI_SERIAL_END(acpi);
3983 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
3984 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
3985 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
3986 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3987 #endif /* ACPI_DEBUG */
3990 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS)
3995 old = acpi_debug_objects;
3996 error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req);
3997 if (error != 0 || req->newptr == NULL)
3999 if (old == acpi_debug_objects || (old && acpi_debug_objects))
4002 ACPI_SERIAL_BEGIN(acpi);
4003 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
4004 ACPI_SERIAL_END(acpi);
4010 acpi_parse_interfaces(char *str, struct acpi_interface *iface)
4017 while (isspace(*p) || *p == ',')
4022 p = strdup(p, M_TEMP);
4023 for (i = 0; i < len; i++)
4028 if (isspace(p[i]) || p[i] == '\0')
4031 i += strlen(p + i) + 1;
4038 iface->data = malloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK);
4042 if (isspace(p[i]) || p[i] == '\0')
4045 iface->data[j] = p + i;
4046 i += strlen(p + i) + 1;
4054 acpi_free_interfaces(struct acpi_interface *iface)
4057 free(iface->data[0], M_TEMP);
4058 free(iface->data, M_TEMP);
4062 acpi_reset_interfaces(device_t dev)
4064 struct acpi_interface list;
4068 if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) {
4069 for (i = 0; i < list.num; i++) {
4070 status = AcpiInstallInterface(list.data[i]);
4071 if (ACPI_FAILURE(status))
4073 "failed to install _OSI(\"%s\"): %s\n",
4074 list.data[i], AcpiFormatException(status));
4075 else if (bootverbose)
4076 device_printf(dev, "installed _OSI(\"%s\")\n",
4079 acpi_free_interfaces(&list);
4081 if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) {
4082 for (i = 0; i < list.num; i++) {
4083 status = AcpiRemoveInterface(list.data[i]);
4084 if (ACPI_FAILURE(status))
4086 "failed to remove _OSI(\"%s\"): %s\n",
4087 list.data[i], AcpiFormatException(status));
4088 else if (bootverbose)
4089 device_printf(dev, "removed _OSI(\"%s\")\n",
4092 acpi_free_interfaces(&list);
4097 acpi_pm_func(u_long cmd, void *arg, ...)
4099 int state, acpi_state;
4101 struct acpi_softc *sc;
4106 case POWER_CMD_SUSPEND:
4107 sc = (struct acpi_softc *)arg;
4114 state = va_arg(ap, int);
4118 case POWER_SLEEP_STATE_STANDBY:
4119 acpi_state = sc->acpi_standby_sx;
4121 case POWER_SLEEP_STATE_SUSPEND:
4122 acpi_state = sc->acpi_suspend_sx;
4124 case POWER_SLEEP_STATE_HIBERNATE:
4125 acpi_state = ACPI_STATE_S4;
4132 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
4145 acpi_pm_register(void *arg)
4147 if (!cold || resource_disabled("acpi", 0))
4150 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
4153 SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);