2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.kfreebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.kfreebsd.org>
4 * Copyright (c) 2000, 2001 Michael Smith
5 * Copyright (c) 2000 BSDi
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/sys/dev/acpica/acpi.c,v 1.243.2.4.4.1 2009/04/15 03:14:26 kensmith Exp $
33 #include <sys/param.h>
34 #include <sys/kernel.h>
36 #include <sys/fcntl.h>
37 #include <sys/malloc.h>
38 #include <sys/module.h>
41 #include <sys/reboot.h>
42 #include <sys/sysctl.h>
43 #include <sys/ctype.h>
44 #include <sys/linker.h>
45 #include <sys/power.h>
47 #include <sys/device.h>
48 #include <sys/spinlock.h>
49 #include <sys/spinlock2.h>
53 #include <bus/isa/isavar.h>
54 #include <bus/isa/pnpvar.h>
57 #include <dev/acpica/acpivar.h>
58 #include <dev/acpica/acpiio.h>
59 #include <dev/acpica/acpiio_mcall.h>
65 #include <bus/pci/pci_cfgreg.h>
66 #include <bus/pci/pcivar.h>
67 #include <bus/pci/pci_private.h>
69 #include <vm/vm_param.h>
71 MALLOC_DEFINE(M_ACPIDEV
, "acpidev", "ACPI devices");
73 /* Hooks for the ACPICA debugging infrastructure */
74 #define _COMPONENT ACPI_BUS
75 ACPI_MODULE_NAME("ACPI");
77 static d_open_t acpiopen
;
78 static d_close_t acpiclose
;
79 static d_ioctl_t acpiioctl
;
81 static struct dev_ops acpi_ops
= {
82 { "acpi", 0, D_MPSAFE
},
88 struct acpi_interface
{
93 /* Global mutex for locking access to the ACPI subsystem. */
94 struct lock acpi_lock
;
95 struct lwkt_token acpi_token
= LWKT_TOKEN_INITIALIZER(acpi_token
);
97 /* Bitmap of device quirks. */
100 static int acpi_modevent(struct module
*mod
, int event
, void *junk
);
101 static void acpi_identify(driver_t
*driver
, device_t parent
);
102 static int acpi_probe(device_t dev
);
103 static int acpi_attach(device_t dev
);
104 static int acpi_suspend(device_t dev
);
105 static int acpi_resume(device_t dev
);
106 static int acpi_shutdown(device_t dev
);
107 static device_t
acpi_add_child(device_t bus
, device_t parent
, int order
, const char *name
,
109 static int acpi_print_child(device_t bus
, device_t child
);
110 static void acpi_probe_nomatch(device_t bus
, device_t child
);
111 static void acpi_driver_added(device_t dev
, driver_t
*driver
);
112 static int acpi_read_ivar(device_t dev
, device_t child
, int index
,
114 static int acpi_write_ivar(device_t dev
, device_t child
, int index
,
116 static struct resource_list
*acpi_get_rlist(device_t dev
, device_t child
);
117 static int acpi_sysres_alloc(device_t dev
);
118 static struct resource
*acpi_alloc_resource(device_t bus
, device_t child
,
119 int type
, int *rid
, u_long start
, u_long end
,
120 u_long count
, u_int flags
, int cpuid
);
121 static int acpi_release_resource(device_t bus
, device_t child
, int type
,
122 int rid
, struct resource
*r
);
123 static void acpi_delete_resource(device_t bus
, device_t child
, int type
,
125 static uint32_t acpi_isa_get_logicalid(device_t dev
);
126 static int acpi_isa_get_compatid(device_t dev
, uint32_t *cids
, int count
);
127 static char *acpi_device_id_probe(device_t bus
, device_t dev
, char **ids
);
128 static ACPI_STATUS
acpi_device_eval_obj(device_t bus
, device_t dev
,
129 ACPI_STRING pathname
, ACPI_OBJECT_LIST
*parameters
,
131 static int acpi_device_pwr_for_sleep(device_t bus
, device_t dev
,
133 static ACPI_STATUS
acpi_device_scan_cb(ACPI_HANDLE h
, UINT32 level
,
134 void *context
, void **retval
);
135 static ACPI_STATUS
acpi_device_scan_children(device_t bus
, device_t dev
,
136 int max_depth
, acpi_scan_cb_t user_fn
, void *arg
);
137 static int acpi_set_powerstate_method(device_t bus
, device_t child
,
139 static int acpi_isa_pnp_probe(device_t bus
, device_t child
,
140 struct isa_pnp_id
*ids
);
141 static void acpi_probe_children(device_t bus
);
142 static void acpi_probe_order(ACPI_HANDLE handle
, int *order
);
143 static ACPI_STATUS
acpi_probe_child(ACPI_HANDLE handle
, UINT32 level
,
144 void *context
, void **status
);
145 static ACPI_STATUS
acpi_EnterSleepState(struct acpi_softc
*sc
, int state
);
146 static void acpi_shutdown_final(void *arg
, int howto
);
147 static void acpi_enable_fixed_events(struct acpi_softc
*sc
);
148 static int acpi_wake_sleep_prep(ACPI_HANDLE handle
, int sstate
);
149 static int acpi_wake_run_prep(ACPI_HANDLE handle
, int sstate
);
150 static int acpi_wake_prep_walk(int sstate
);
151 static int acpi_wake_sysctl_walk(device_t dev
);
153 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS
);
155 static void acpi_system_eventhandler_sleep(void *arg
, int state
);
156 static void acpi_system_eventhandler_wakeup(void *arg
, int state
);
157 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
);
158 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
);
159 static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS
);
160 static int acpi_pm_func(u_long cmd
, void *arg
, ...);
161 static int acpi_child_location_str_method(device_t acdev
, device_t child
,
162 char *buf
, size_t buflen
);
163 static int acpi_child_pnpinfo_str_method(device_t acdev
, device_t child
,
164 char *buf
, size_t buflen
);
165 static void acpi_enable_pcie(void);
166 static void acpi_reset_interfaces(device_t dev
);
168 static device_method_t acpi_methods
[] = {
169 /* Device interface */
170 DEVMETHOD(device_identify
, acpi_identify
),
171 DEVMETHOD(device_probe
, acpi_probe
),
172 DEVMETHOD(device_attach
, acpi_attach
),
173 DEVMETHOD(device_shutdown
, acpi_shutdown
),
174 DEVMETHOD(device_detach
, bus_generic_detach
),
175 DEVMETHOD(device_suspend
, acpi_suspend
),
176 DEVMETHOD(device_resume
, acpi_resume
),
179 DEVMETHOD(bus_add_child
, acpi_add_child
),
180 DEVMETHOD(bus_print_child
, acpi_print_child
),
181 DEVMETHOD(bus_probe_nomatch
, acpi_probe_nomatch
),
182 DEVMETHOD(bus_driver_added
, acpi_driver_added
),
183 DEVMETHOD(bus_read_ivar
, acpi_read_ivar
),
184 DEVMETHOD(bus_write_ivar
, acpi_write_ivar
),
185 DEVMETHOD(bus_get_resource_list
, acpi_get_rlist
),
186 DEVMETHOD(bus_set_resource
, bus_generic_rl_set_resource
),
187 DEVMETHOD(bus_get_resource
, bus_generic_rl_get_resource
),
188 DEVMETHOD(bus_alloc_resource
, acpi_alloc_resource
),
189 DEVMETHOD(bus_release_resource
, acpi_release_resource
),
190 DEVMETHOD(bus_delete_resource
, acpi_delete_resource
),
191 DEVMETHOD(bus_child_pnpinfo_str
, acpi_child_pnpinfo_str_method
),
192 DEVMETHOD(bus_child_location_str
, acpi_child_location_str_method
),
193 DEVMETHOD(bus_activate_resource
, bus_generic_activate_resource
),
194 DEVMETHOD(bus_deactivate_resource
, bus_generic_deactivate_resource
),
195 DEVMETHOD(bus_setup_intr
, bus_generic_setup_intr
),
196 DEVMETHOD(bus_teardown_intr
, bus_generic_teardown_intr
),
199 DEVMETHOD(acpi_id_probe
, acpi_device_id_probe
),
200 DEVMETHOD(acpi_evaluate_object
, acpi_device_eval_obj
),
201 DEVMETHOD(acpi_pwr_for_sleep
, acpi_device_pwr_for_sleep
),
202 DEVMETHOD(acpi_scan_children
, acpi_device_scan_children
),
205 DEVMETHOD(pci_set_powerstate
, acpi_set_powerstate_method
),
208 DEVMETHOD(isa_pnp_probe
, acpi_isa_pnp_probe
),
213 static driver_t acpi_driver
= {
216 sizeof(struct acpi_softc
),
219 static devclass_t acpi_devclass
;
220 DRIVER_MODULE(acpi
, nexus
, acpi_driver
, acpi_devclass
, acpi_modevent
, NULL
);
221 MODULE_VERSION(acpi
, 1);
223 ACPI_SERIAL_DECL(acpi
, "ACPI serializer");
225 /* Local pools for managing system resources for ACPI child devices. */
226 static struct rman acpi_rman_io
, acpi_rman_mem
;
228 #define ACPI_MINIMUM_AWAKETIME 5
230 static const char* sleep_state_names
[] = {
231 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
233 SYSCTL_NODE(_debug
, OID_AUTO
, acpi
, CTLFLAG_RD
, NULL
, "ACPI debugging");
234 static char acpi_ca_version
[12];
235 SYSCTL_STRING(_debug_acpi
, OID_AUTO
, acpi_ca_version
, CTLFLAG_RD
,
236 acpi_ca_version
, 0, "Version of Intel ACPICA");
239 * Allow overriding _OSI methods.
241 static char acpi_install_interface
[256];
242 TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface
,
243 sizeof(acpi_install_interface
));
244 static char acpi_remove_interface
[256];
245 TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface
,
246 sizeof(acpi_remove_interface
));
249 * Use this tunable to disable the control method auto-serialization
250 * mechanism that was added in 20140214 and superseded the previous
251 * AcpiGbl_SerializeAllMethods global.
253 static int acpi_auto_serialize_methods
= 1;
254 TUNABLE_INT("hw.acpi.auto_serialize_methods", &acpi_auto_serialize_methods
);
256 /* Allow users to dump Debug objects without ACPI debugger. */
257 static int acpi_debug_objects
;
258 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects
);
259 SYSCTL_PROC(_debug_acpi
, OID_AUTO
, enable_debug_objects
,
260 CTLFLAG_RW
| CTLTYPE_INT
, NULL
, 0, acpi_debug_objects_sysctl
, "I",
261 "Enable Debug objects.");
263 /* Allow ignoring the XSDT. */
264 static int acpi_ignore_xsdt
;
265 TUNABLE_INT("debug.acpi.ignore_xsdt", &acpi_ignore_xsdt
);
266 SYSCTL_INT(_debug_acpi
, OID_AUTO
, ignore_xsdt
, CTLFLAG_RD
,
267 &acpi_ignore_xsdt
, 1, "Ignore the XSDT, forcing the use of the RSDT.");
269 /* Allow the interpreter to ignore common mistakes in BIOS. */
270 static int acpi_interpreter_slack
= 1;
271 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack
);
272 SYSCTL_INT(_debug_acpi
, OID_AUTO
, interpreter_slack
, CTLFLAG_RD
,
273 &acpi_interpreter_slack
, 1, "Turn on interpreter slack mode.");
275 /* Allow preferring 32-bit FADT register addresses over the 64-bit ones. */
276 static int acpi_fadt_addr32
;
277 TUNABLE_INT("debug.acpi.fadt_addr32", &acpi_fadt_addr32
);
278 SYSCTL_INT(_debug_acpi
, OID_AUTO
, fadt_addr32
, CTLFLAG_RD
,
279 &acpi_fadt_addr32
, 1,
280 "Prefer 32-bit FADT register addresses over 64-bit ones.");
282 /* Prefer 32-bit FACS table addresses over the 64-bit ones. */
283 static int acpi_facs_addr32
= 1;
284 TUNABLE_INT("debug.acpi.facs_addr32", &acpi_facs_addr32
);
285 SYSCTL_INT(_debug_acpi
, OID_AUTO
, facs_addr32
, CTLFLAG_RD
,
286 &acpi_facs_addr32
, 1,
287 "Prefer 32-bit FACS table addresses over 64-bit ones.");
289 static int acpi_group_module_level_code
;
290 TUNABLE_INT("debug.acpi.group_module_level_code", &acpi_group_module_level_code
);
291 SYSCTL_INT(_debug_acpi
, OID_AUTO
, group_module_level_code
, CTLFLAG_RD
,
292 &acpi_group_module_level_code
, 1,
293 "Group module-level code.");
295 /* Power devices off and on in suspend and resume. XXX Remove once tested. */
296 static int acpi_do_powerstate
= 1;
297 TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate
);
298 SYSCTL_INT(_debug_acpi
, OID_AUTO
, do_powerstate
, CTLFLAG_RW
,
299 &acpi_do_powerstate
, 1, "Turn off devices when suspending.");
301 /* Allow users to override quirks. */
302 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks
);
304 /* Allow to call ACPI methods from userland. */
305 static int acpi_allow_mcall
;
306 TUNABLE_INT("debug.acpi.allow_method_calls", &acpi_allow_mcall
);
308 static int acpi_susp_bounce
;
309 SYSCTL_INT(_debug_acpi
, OID_AUTO
, suspend_bounce
, CTLFLAG_RW
,
310 &acpi_susp_bounce
, 0, "Don't actually suspend, just test devices.");
313 * ACPI can only be loaded as a module by the loader; activating it after
314 * system bootstrap time is not useful, and can be fatal to the system.
315 * It also cannot be unloaded, since the entire system bus heirarchy hangs
319 acpi_modevent(struct module
*mod
, int event
, void *junk
)
324 kprintf("The ACPI driver cannot be loaded after boot.\n");
329 if (!cold
&& power_pm_get_type() == POWER_PM_TYPE_ACPI
)
339 * Perform early initialization.
344 static int started
= 0;
348 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
350 /* Only run the startup code once. The MADT driver also calls this. */
352 return_VALUE (AE_OK
);
355 /* Start up the ACPICA subsystem. */
356 status
= AcpiInitializeSubsystem();
357 if (ACPI_FAILURE(status
)) {
358 kprintf("ACPI: Subsystem initialization failed: %s\n",
359 AcpiFormatException(status
));
360 return_VALUE (status
);
364 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
365 * if more tables exist.
367 if (ACPI_FAILURE(status
= AcpiInitializeTables(NULL
, 2, TRUE
))) {
368 kprintf("ACPI: Table initialization failed: %s\n",
369 AcpiFormatException(status
));
370 return_VALUE (status
);
373 /* Set up any quirks we have for this system. */
374 if (acpi_quirks
== ACPI_Q_OK
)
375 acpi_table_quirks(&acpi_quirks
);
377 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
378 if (resource_int_value("acpi", 0, "disabled", &val
) == 0 && val
== 0)
379 acpi_quirks
&= ~ACPI_Q_BROKEN
;
380 if (acpi_quirks
& ACPI_Q_BROKEN
) {
381 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
385 return_VALUE (status
);
389 * Detect ACPI, perform early initialisation
392 acpi_identify(driver_t
*driver
, device_t parent
)
396 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
401 /* Check that we haven't been disabled with a hint. */
402 if (resource_disabled("acpi", 0))
405 /* Make sure we're not being doubly invoked. */
406 if (device_find_child(parent
, "acpi", 0) != NULL
)
409 ksnprintf(acpi_ca_version
, sizeof(acpi_ca_version
), "%x", ACPI_CA_VERSION
);
411 /* Initialize root tables. */
412 if (ACPI_FAILURE(acpi_Startup())) {
413 kprintf("ACPI: Try disabling either ACPI or apic support.\n");
417 /* Attach the actual ACPI device. */
418 if ((child
= BUS_ADD_CHILD(parent
, parent
, 10, "acpi", 0)) == NULL
) {
419 device_printf(parent
, "device_identify failed\n");
425 * Fetch some descriptive data from ACPI to put in our attach message.
428 acpi_probe(device_t dev
)
430 ACPI_TABLE_RSDP
*rsdp
;
431 ACPI_TABLE_HEADER
*rsdt
;
432 ACPI_PHYSICAL_ADDRESS paddr
;
433 char buf
[ACPI_OEM_ID_SIZE
+ ACPI_OEM_TABLE_ID_SIZE
+ 2];
436 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
438 if (power_pm_get_type() != POWER_PM_TYPE_NONE
&&
439 power_pm_get_type() != POWER_PM_TYPE_ACPI
) {
440 device_printf(dev
, "probe failed, other PM system enabled.\n");
441 return_VALUE (ENXIO
);
444 if ((paddr
= AcpiOsGetRootPointer()) == 0 ||
445 (rsdp
= AcpiOsMapMemory(paddr
, sizeof(ACPI_TABLE_RSDP
))) == NULL
)
446 return_VALUE (ENXIO
);
447 if (acpi_ignore_xsdt
== 0 &&
448 rsdp
->Revision
> 1 && rsdp
->XsdtPhysicalAddress
!= 0)
449 paddr
= (ACPI_PHYSICAL_ADDRESS
)rsdp
->XsdtPhysicalAddress
;
451 paddr
= (ACPI_PHYSICAL_ADDRESS
)rsdp
->RsdtPhysicalAddress
;
452 AcpiOsUnmapMemory(rsdp
, sizeof(ACPI_TABLE_RSDP
));
454 if ((rsdt
= AcpiOsMapMemory(paddr
, sizeof(ACPI_TABLE_HEADER
))) == NULL
)
455 return_VALUE (ENXIO
);
456 sbuf_new(&sb
, buf
, sizeof(buf
), SBUF_FIXEDLEN
);
457 sbuf_bcat(&sb
, rsdt
->OemId
, ACPI_OEM_ID_SIZE
);
460 sbuf_bcat(&sb
, rsdt
->OemTableId
, ACPI_OEM_TABLE_ID_SIZE
);
463 device_set_desc_copy(dev
, sbuf_data(&sb
));
465 AcpiOsUnmapMemory(rsdt
, sizeof(ACPI_TABLE_HEADER
));
471 acpi_attach(device_t dev
)
473 struct acpi_softc
*sc
;
480 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
482 sc
= device_get_softc(dev
);
484 callout_init(&sc
->susp_force_to
);
486 if ((error
= acpi_task_thread_init())) {
487 device_printf(dev
, "Could not start task thread.\n");
493 /* Initialize resource manager. */
494 acpi_rman_io
.rm_type
= RMAN_ARRAY
;
495 acpi_rman_io
.rm_start
= 0;
496 acpi_rman_io
.rm_end
= 0xffff;
497 acpi_rman_io
.rm_descr
= "ACPI I/O ports";
498 if (rman_init(&acpi_rman_io
, -1) != 0)
499 panic("acpi rman_init IO ports failed");
500 acpi_rman_mem
.rm_type
= RMAN_ARRAY
;
501 acpi_rman_mem
.rm_start
= 0;
502 acpi_rman_mem
.rm_end
= ~0ul;
503 acpi_rman_mem
.rm_descr
= "ACPI I/O memory addresses";
504 if (rman_init(&acpi_rman_mem
, -1) != 0)
505 panic("acpi rman_init memory failed");
507 /* Initialise the ACPI mutex */
508 ACPI_LOCK_INIT(acpi
, "acpi");
509 ACPI_SERIAL_INIT(acpi
);
514 * Set the globals from our tunables. This is needed because ACPICA
515 * uses UINT8 for some values and we have no tunable_byte.
517 AcpiGbl_AutoSerializeMethods
= acpi_auto_serialize_methods
? TRUE
: FALSE
;
518 AcpiGbl_DoNotUseXsdt
= acpi_ignore_xsdt
? TRUE
: FALSE
;
519 AcpiGbl_EnableAmlDebugObject
= acpi_debug_objects
? TRUE
: FALSE
;
520 AcpiGbl_EnableInterpreterSlack
= acpi_interpreter_slack
? TRUE
: FALSE
;
521 AcpiGbl_GroupModuleLevelCode
= acpi_group_module_level_code
? TRUE
: FALSE
;
522 AcpiGbl_Use32BitFadtAddresses
= acpi_fadt_addr32
? TRUE
: FALSE
;
523 AcpiGbl_Use32BitFacsAddresses
= acpi_facs_addr32
? TRUE
: FALSE
;
527 * Disable Debug Object output.
529 AcpiDbgLevel
&= ~ACPI_LV_DEBUG_OBJECT
;
532 /* Override OS interfaces if the user requested. */
533 acpi_reset_interfaces(dev
);
535 /* Load ACPI name space. */
536 status
= AcpiLoadTables();
537 if (ACPI_FAILURE(status
)) {
538 device_printf(dev
, "Could not load Namespace: %s\n",
539 AcpiFormatException(status
));
543 /* Handle MCFG table if present. */
547 * Note that some systems (specifically, those with namespace evaluation
548 * issues that require the avoidance of parts of the namespace) must
549 * avoid running _INI and _STA on everything, as well as dodging the final
552 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
554 * XXX We should arrange for the object init pass after we have attached
555 * all our child devices, but on many systems it works here.
557 flags
= ACPI_FULL_INITIALIZATION
;
558 if (ktestenv("debug.acpi.avoid"))
559 flags
= ACPI_NO_DEVICE_INIT
| ACPI_NO_OBJECT_INIT
;
561 /* Bring the hardware and basic handlers online. */
562 if (ACPI_FAILURE(status
= AcpiEnableSubsystem(flags
))) {
563 device_printf(dev
, "Could not enable ACPI: %s\n",
564 AcpiFormatException(status
));
569 * Fix up the interrupt timer after enabling ACPI, so that the
570 * interrupt cputimer that choked by ACPI power management could
571 * be resurrected before probing various devices.
574 cputimer_intr_pmfixup();
577 * Call the ECDT probe function to provide EC functionality before
578 * the namespace has been evaluated.
580 * XXX This happens before the sysresource devices have been probed and
581 * attached so its resources come from nexus0. In practice, this isn't
582 * a problem but should be addressed eventually.
584 acpi_ec_ecdt_probe(dev
);
586 /* Bring device objects and regions online. */
587 if (ACPI_FAILURE(status
= AcpiInitializeObjects(flags
))) {
588 device_printf(dev
, "Could not initialize ACPI objects: %s\n",
589 AcpiFormatException(status
));
594 * Setup our sysctl tree.
596 * XXX: This doesn't check to make sure that none of these fail.
598 sysctl_ctx_init(&sc
->acpi_sysctl_ctx
);
599 sc
->acpi_sysctl_tree
= SYSCTL_ADD_NODE(&sc
->acpi_sysctl_ctx
,
600 SYSCTL_STATIC_CHILDREN(_hw
), OID_AUTO
,
601 device_get_name(dev
), CTLFLAG_RD
, 0, "");
602 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
603 OID_AUTO
, "supported_sleep_state", CTLTYPE_STRING
| CTLFLAG_RD
,
604 0, 0, acpi_supported_sleep_state_sysctl
, "A", "");
605 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
606 OID_AUTO
, "power_button_state", CTLTYPE_STRING
| CTLFLAG_RW
,
607 &sc
->acpi_power_button_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
608 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
609 OID_AUTO
, "sleep_button_state", CTLTYPE_STRING
| CTLFLAG_RW
,
610 &sc
->acpi_sleep_button_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
611 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
612 OID_AUTO
, "lid_switch_state", CTLTYPE_STRING
| CTLFLAG_RW
,
613 &sc
->acpi_lid_switch_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
614 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
615 OID_AUTO
, "standby_state", CTLTYPE_STRING
| CTLFLAG_RW
,
616 &sc
->acpi_standby_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
617 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
618 OID_AUTO
, "suspend_state", CTLTYPE_STRING
| CTLFLAG_RW
,
619 &sc
->acpi_suspend_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
620 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
621 OID_AUTO
, "sleep_delay", CTLFLAG_RW
, &sc
->acpi_sleep_delay
, 0,
623 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
624 OID_AUTO
, "s4bios", CTLFLAG_RW
, &sc
->acpi_s4bios
, 0, "S4BIOS mode");
625 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
626 OID_AUTO
, "verbose", CTLFLAG_RW
, &sc
->acpi_verbose
, 0, "verbose mode");
627 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
628 OID_AUTO
, "disable_on_reboot", CTLFLAG_RW
,
629 &sc
->acpi_do_disable
, 0, "Disable ACPI when rebooting/halting system");
630 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
631 OID_AUTO
, "handle_reboot", CTLFLAG_RW
,
632 &sc
->acpi_handle_reboot
, 0, "Use ACPI Reset Register to reboot");
635 * Default to 1 second before sleeping to give some machines time to
638 sc
->acpi_sleep_delay
= 1;
640 sc
->acpi_verbose
= 1;
641 if ((env
= kgetenv("hw.acpi.verbose")) != NULL
) {
642 if (strcmp(env
, "0") != 0)
643 sc
->acpi_verbose
= 1;
647 /* Only enable reboot by default if the FADT says it is available. */
648 if (AcpiGbl_FADT
.Flags
& ACPI_FADT_RESET_REGISTER
)
649 sc
->acpi_handle_reboot
= 1;
651 /* Only enable S4BIOS by default if the FACS says it is available. */
652 if (AcpiGbl_FACS
->Flags
& ACPI_FACS_S4_BIOS_PRESENT
)
656 * Dispatch the default sleep state to devices. The lid switch is set
657 * to NONE by default to avoid surprising users.
659 sc
->acpi_power_button_sx
= ACPI_STATE_S5
;
660 sc
->acpi_lid_switch_sx
= ACPI_S_STATES_MAX
+ 1;
661 sc
->acpi_standby_sx
= ACPI_STATE_S1
;
662 sc
->acpi_suspend_sx
= ACPI_STATE_S3
;
664 /* Pick the first valid sleep state for the sleep button default. */
665 sc
->acpi_sleep_button_sx
= ACPI_S_STATES_MAX
+ 1;
666 for (state
= ACPI_STATE_S1
; state
<= ACPI_STATE_S4
; state
++)
667 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state
, &TypeA
, &TypeB
))) {
668 sc
->acpi_sleep_button_sx
= state
;
672 acpi_enable_fixed_events(sc
);
675 * Scan the namespace and attach/initialise children.
678 /* Register our shutdown handler. */
679 EVENTHANDLER_REGISTER(shutdown_final
, acpi_shutdown_final
, sc
,
683 * Register our acpi event handlers.
684 * XXX should be configurable eg. via userland policy manager.
686 EVENTHANDLER_REGISTER(acpi_sleep_event
, acpi_system_eventhandler_sleep
,
687 sc
, ACPI_EVENT_PRI_LAST
);
688 EVENTHANDLER_REGISTER(acpi_wakeup_event
, acpi_system_eventhandler_wakeup
,
689 sc
, ACPI_EVENT_PRI_LAST
);
691 /* Flag our initial states. */
692 sc
->acpi_enabled
= 1;
693 sc
->acpi_sstate
= ACPI_STATE_S0
;
694 sc
->acpi_sleep_disabled
= 0;
695 /* Create the control device */
696 sc
->acpi_dev_t
= make_dev(&acpi_ops
, 0, UID_ROOT
, GID_WHEEL
, 0644, "acpi");
697 sc
->acpi_dev_t
->si_drv1
= sc
;
699 if ((error
= acpi_machdep_init(dev
)))
702 /* Register ACPI again to pass the correct argument of pm_func. */
703 power_pm_register(POWER_PM_TYPE_ACPI
, acpi_pm_func
, sc
);
705 if (!acpi_disabled("bus"))
706 acpi_probe_children(dev
);
708 /* Update all GPEs and enable runtime GPEs. */
709 status
= AcpiUpdateAllGpes();
710 if (ACPI_FAILURE(status
)) {
711 device_printf(dev
, "Could not update all GPEs: %s\n",
712 AcpiFormatException(status
));
715 /* Allow sleep request after a while. */
716 /* timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME); */
723 cputimer_intr_pmfixup();
724 acpi_task_thread_schedule();
726 return_VALUE (error
);
730 acpi_suspend(device_t dev
)
732 device_t child
, *devlist
;
733 int error
, i
, numdevs
, pstate
;
735 /* First give child devices a chance to suspend. */
736 error
= bus_generic_suspend(dev
);
741 * Now, set them into the appropriate power state, usually D3. If the
742 * device has an _SxD method for the next sleep state, use that power
745 device_get_children(dev
, &devlist
, &numdevs
);
746 for (i
= 0; i
< numdevs
; i
++) {
747 /* If the device is not attached, we've powered it down elsewhere. */
749 if (!device_is_attached(child
))
753 * Default to D3 for all sleep states. The _SxD method is optional
754 * so set the powerstate even if it's absent.
756 pstate
= PCI_POWERSTATE_D3
;
757 error
= acpi_device_pwr_for_sleep(device_get_parent(child
),
759 if ((error
== 0 || error
== ESRCH
) && acpi_do_powerstate
)
760 pci_set_powerstate(child
, pstate
);
762 kfree(devlist
, M_TEMP
);
769 acpi_resume(device_t dev
)
773 device_t child
, *devlist
;
776 * Put all devices in D0 before resuming them. Call _S0D on each one
777 * since some systems expect this.
779 device_get_children(dev
, &devlist
, &numdevs
);
780 for (i
= 0; i
< numdevs
; i
++) {
782 handle
= acpi_get_handle(child
);
784 AcpiEvaluateObject(handle
, "_S0D", NULL
, NULL
);
785 if (device_is_attached(child
) && acpi_do_powerstate
)
786 pci_set_powerstate(child
, PCI_POWERSTATE_D0
);
788 kfree(devlist
, M_TEMP
);
790 return (bus_generic_resume(dev
));
794 acpi_shutdown(device_t dev
)
796 /* Allow children to shutdown first. */
797 bus_generic_shutdown(dev
);
800 * Enable any GPEs that are able to power-on the system (i.e., RTC).
801 * Also, disable any that are not valid for this state (most).
803 acpi_wake_prep_walk(ACPI_STATE_S5
);
809 * Handle a new device being added
812 acpi_add_child(device_t bus
, device_t parent
, int order
, const char *name
, int unit
)
814 struct acpi_device
*ad
;
817 if ((ad
= kmalloc(sizeof(*ad
), M_ACPIDEV
, M_NOWAIT
| M_ZERO
)) == NULL
)
820 resource_list_init(&ad
->ad_rl
);
821 child
= device_add_child_ordered(parent
, order
, name
, unit
);
823 device_set_ivars(child
, ad
);
825 kfree(ad
, M_ACPIDEV
);
830 acpi_print_child(device_t bus
, device_t child
)
832 struct acpi_device
*adev
= device_get_ivars(child
);
833 struct resource_list
*rl
= &adev
->ad_rl
;
836 retval
+= bus_print_child_header(bus
, child
);
837 retval
+= resource_list_print_type(rl
, "port", SYS_RES_IOPORT
, "%#lx");
838 retval
+= resource_list_print_type(rl
, "iomem", SYS_RES_MEMORY
, "%#lx");
839 retval
+= resource_list_print_type(rl
, "irq", SYS_RES_IRQ
, "%ld");
840 retval
+= resource_list_print_type(rl
, "drq", SYS_RES_DRQ
, "%ld");
841 if (device_get_flags(child
))
842 retval
+= kprintf(" flags %#x", device_get_flags(child
));
843 retval
+= bus_print_child_footer(bus
, child
);
849 * If this device is an ACPI child but no one claimed it, attempt
850 * to power it off. We'll power it back up when a driver is added.
852 * XXX Disabled for now since many necessary devices (like fdc and
853 * ATA) don't claim the devices we created for them but still expect
854 * them to be powered up.
857 acpi_probe_nomatch(device_t bus
, device_t child
)
860 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
864 * If a new driver has a chance to probe a child, first power it up.
866 * XXX Disabled for now (see acpi_probe_nomatch for details).
869 acpi_driver_added(device_t dev
, driver_t
*driver
)
871 device_t child
, *devlist
;
874 DEVICE_IDENTIFY(driver
, dev
);
875 device_get_children(dev
, &devlist
, &numdevs
);
876 for (i
= 0; i
< numdevs
; i
++) {
878 if (device_get_state(child
) == DS_NOTPRESENT
) {
879 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
880 if (device_probe_and_attach(child
) != 0)
881 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
884 kfree(devlist
, M_TEMP
);
887 /* Location hint for devctl(8) */
889 acpi_child_location_str_method(device_t cbdev
, device_t child
, char *buf
,
892 struct acpi_device
*dinfo
= device_get_ivars(child
);
894 if (dinfo
->ad_handle
)
895 ksnprintf(buf
, buflen
, "handle=%s", acpi_name(dinfo
->ad_handle
));
897 ksnprintf(buf
, buflen
, "unknown");
901 /* PnP information for devctl(8) */
903 acpi_child_pnpinfo_str_method(device_t cbdev
, device_t child
, char *buf
,
906 ACPI_DEVICE_INFO
*adinfo
;
907 struct acpi_device
*dinfo
= device_get_ivars(child
);
909 if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo
->ad_handle
, &adinfo
))) {
910 ksnprintf(buf
, buflen
, "unknown");
912 ksnprintf(buf
, buflen
, "_HID=%s _UID=%s",
913 (adinfo
->Valid
& ACPI_VALID_HID
) ?
914 adinfo
->HardwareId
.String
: "none",
915 (adinfo
->Valid
& ACPI_VALID_UID
) ?
916 adinfo
->UniqueId
.String
: "0");
924 * Handle per-device ivars
927 acpi_read_ivar(device_t dev
, device_t child
, int index
, uintptr_t *result
)
929 struct acpi_device
*ad
;
931 if ((ad
= device_get_ivars(child
)) == NULL
) {
932 device_printf(child
, "device has no ivars\n");
936 /* ACPI and ISA compatibility ivars */
938 case ACPI_IVAR_HANDLE
:
939 *(ACPI_HANDLE
*)result
= ad
->ad_handle
;
941 case ACPI_IVAR_MAGIC
:
942 *result
= ad
->ad_magic
;
944 case ACPI_IVAR_PRIVATE
:
945 *(void **)result
= ad
->ad_private
;
947 case ACPI_IVAR_FLAGS
:
948 *(int *)result
= ad
->ad_flags
;
950 case ISA_IVAR_VENDORID
:
951 case ISA_IVAR_SERIAL
:
952 case ISA_IVAR_COMPATID
:
955 case ISA_IVAR_LOGICALID
:
956 *(int *)result
= acpi_isa_get_logicalid(child
);
966 acpi_write_ivar(device_t dev
, device_t child
, int index
, uintptr_t value
)
968 struct acpi_device
*ad
;
970 if ((ad
= device_get_ivars(child
)) == NULL
) {
971 device_printf(child
, "device has no ivars\n");
976 case ACPI_IVAR_HANDLE
:
977 ad
->ad_handle
= (ACPI_HANDLE
)value
;
979 case ACPI_IVAR_MAGIC
:
980 ad
->ad_magic
= value
;
982 case ACPI_IVAR_PRIVATE
:
983 ad
->ad_private
= (void *)value
;
985 case ACPI_IVAR_FLAGS
:
986 ad
->ad_flags
= (int)value
;
989 panic("bad ivar write request (%d)", index
);
997 * Handle child resource allocation/removal
999 static struct resource_list
*
1000 acpi_get_rlist(device_t dev
, device_t child
)
1002 struct acpi_device
*ad
;
1004 ad
= device_get_ivars(child
);
1005 return (&ad
->ad_rl
);
1009 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
1010 * duplicates, we merge any in the sysresource attach routine.
1013 acpi_sysres_alloc(device_t dev
)
1015 struct resource
*res
;
1016 struct resource_list
*rl
;
1017 struct resource_list_entry
*rle
;
1019 char *sysres_ids
[] = { "PNP0C01", "PNP0C02", NULL
};
1023 * Probe/attach any sysresource devices. This would be unnecessary if we
1024 * had multi-pass probe/attach.
1026 if (device_get_children(dev
, &children
, &child_count
) != 0)
1028 for (i
= 0; i
< child_count
; i
++) {
1029 if (ACPI_ID_PROBE(dev
, children
[i
], sysres_ids
) != NULL
)
1030 device_probe_and_attach(children
[i
]);
1032 kfree(children
, M_TEMP
);
1034 rl
= BUS_GET_RESOURCE_LIST(device_get_parent(dev
), dev
);
1037 SLIST_FOREACH(rle
, rl
, link
) {
1038 if (rle
->res
!= NULL
) {
1039 device_printf(dev
, "duplicate resource for %lx\n", rle
->start
);
1043 /* Only memory and IO resources are valid here. */
1044 switch (rle
->type
) {
1045 case SYS_RES_IOPORT
:
1048 case SYS_RES_MEMORY
:
1049 rm
= &acpi_rman_mem
;
1055 /* Pre-allocate resource and add to our rman pool. */
1056 res
= BUS_ALLOC_RESOURCE(device_get_parent(dev
), dev
, rle
->type
,
1057 &rle
->rid
, rle
->start
, rle
->start
+ rle
->count
- 1, rle
->count
,
1060 rman_manage_region(rm
, rman_get_start(res
), rman_get_end(res
));
1063 device_printf(dev
, "reservation of %lx, %lx (%d) failed\n",
1064 rle
->start
, rle
->count
, rle
->type
);
1069 static struct resource
*
1070 acpi_alloc_resource(device_t bus
, device_t child
, int type
, int *rid
,
1071 u_long start
, u_long end
, u_long count
, u_int flags
, int cpuid
)
1074 struct acpi_device
*ad
= device_get_ivars(child
);
1075 struct resource_list
*rl
= &ad
->ad_rl
;
1076 struct resource_list_entry
*rle
;
1077 struct resource
*res
;
1082 /* We only handle memory and IO resources through rman. */
1084 case SYS_RES_IOPORT
:
1087 case SYS_RES_MEMORY
:
1088 rm
= &acpi_rman_mem
;
1094 ACPI_SERIAL_BEGIN(acpi
);
1097 * If this is an allocation of the "default" range for a given RID, and
1098 * we know what the resources for this device are (i.e., they're on the
1099 * child's resource list), use those start/end values.
1101 if (bus
== device_get_parent(child
) && start
== 0UL && end
== ~0UL) {
1102 rle
= resource_list_find(rl
, type
, *rid
);
1112 * If this is an allocation of a specific range, see if we can satisfy
1113 * the request from our system resource regions. If we can't, pass the
1114 * request up to the parent.
1116 if (start
+ count
- 1 == end
&& rm
!= NULL
)
1117 res
= rman_reserve_resource(rm
, start
, end
, count
, flags
& ~RF_ACTIVE
,
1120 res
= BUS_ALLOC_RESOURCE(device_get_parent(bus
), child
, type
, rid
,
1121 start
, end
, count
, flags
, cpuid
);
1123 rman_set_rid(res
, *rid
);
1125 /* If requested, activate the resource using the parent's method. */
1126 if (flags
& RF_ACTIVE
)
1127 if (bus_activate_resource(child
, type
, *rid
, res
) != 0) {
1128 rman_release_resource(res
);
1134 if (res
!= NULL
&& device_get_parent(child
) == bus
)
1138 * Since bus_config_intr() takes immediate effect, we cannot
1139 * configure the interrupt associated with a device when we
1140 * parse the resources but have to defer it until a driver
1141 * actually allocates the interrupt via bus_alloc_resource().
1143 * NB: Lookup failure is fine, since the device may add its
1144 * own interrupt resources, e.g. MSI or MSI-X.
1147 acpi_lookup_irq_resource(child
, *rid
, res
, &ares
))) {
1148 acpi_config_intr(child
, &ares
);
1150 kprintf("irq resource not found\n");
1156 ACPI_SERIAL_END(acpi
);
1161 acpi_release_resource(device_t bus
, device_t child
, int type
, int rid
,
1167 /* We only handle memory and IO resources through rman. */
1169 case SYS_RES_IOPORT
:
1172 case SYS_RES_MEMORY
:
1173 rm
= &acpi_rman_mem
;
1179 ACPI_SERIAL_BEGIN(acpi
);
1182 * If this resource belongs to one of our internal managers,
1183 * deactivate it and release it to the local pool. If it doesn't,
1184 * pass this request up to the parent.
1186 if (rm
!= NULL
&& rman_is_region_manager(r
, rm
)) {
1187 if (rman_get_flags(r
) & RF_ACTIVE
) {
1188 ret
= bus_deactivate_resource(child
, type
, rid
, r
);
1192 ret
= rman_release_resource(r
);
1194 ret
= BUS_RELEASE_RESOURCE(device_get_parent(bus
), child
, type
, rid
, r
);
1197 ACPI_SERIAL_END(acpi
);
1202 acpi_delete_resource(device_t bus
, device_t child
, int type
, int rid
)
1204 struct resource_list
*rl
;
1206 rl
= acpi_get_rlist(bus
, child
);
1207 resource_list_delete(rl
, type
, rid
);
1210 /* Allocate an IO port or memory resource, given its GAS. */
1212 acpi_bus_alloc_gas(device_t dev
, int *type
, int *rid
, ACPI_GENERIC_ADDRESS
*gas
,
1213 struct resource
**res
, u_int flags
)
1215 int error
, res_type
;
1218 if (type
== NULL
|| rid
== NULL
|| gas
== NULL
|| res
== NULL
)
1221 /* We only support memory and IO spaces. */
1222 switch (gas
->SpaceId
) {
1223 case ACPI_ADR_SPACE_SYSTEM_MEMORY
:
1224 res_type
= SYS_RES_MEMORY
;
1226 case ACPI_ADR_SPACE_SYSTEM_IO
:
1227 res_type
= SYS_RES_IOPORT
;
1230 return (EOPNOTSUPP
);
1234 * If the register width is less than 8, assume the BIOS author means
1235 * it is a bit field and just allocate a byte.
1237 if (gas
->BitWidth
&& gas
->BitWidth
< 8)
1240 /* Validate the address after we're sure we support the space. */
1241 if (gas
->Address
== 0 || gas
->BitWidth
== 0)
1244 bus_set_resource(dev
, res_type
, *rid
, gas
->Address
,
1245 gas
->BitWidth
/ 8, -1);
1246 *res
= bus_alloc_resource_any(dev
, res_type
, rid
, RF_ACTIVE
| flags
);
1251 bus_delete_resource(dev
, res_type
, *rid
);
1257 acpi_eval_osc(device_t dev
, ACPI_HANDLE handle
, const char *uuidstr
,
1258 int revision
, uint32_t *buf
, int count
)
1260 ACPI_BUFFER retbuf
= { ACPI_ALLOCATE_BUFFER
, NULL
};
1261 ACPI_OBJECT_LIST arglist
;
1263 ACPI_OBJECT
*retobj
;
1267 uint8_t oscuuid
[16];
1270 if (parse_uuid(uuidstr
, &uuid
) != 0)
1272 le_uuid_enc(oscuuid
, &uuid
);
1274 arglist
.Pointer
= arg
;
1276 arg
[0].Type
= ACPI_TYPE_BUFFER
;
1277 arg
[0].Buffer
.Length
= sizeof(oscuuid
);
1278 arg
[0].Buffer
.Pointer
= oscuuid
; /* UUID */
1279 arg
[1].Type
= ACPI_TYPE_INTEGER
;
1280 arg
[1].Integer
.Value
= revision
; /* revision */
1281 arg
[2].Type
= ACPI_TYPE_INTEGER
;
1282 arg
[2].Integer
.Value
= count
; /* # of cap integers */
1283 arg
[3].Type
= ACPI_TYPE_BUFFER
;
1284 arg
[3].Buffer
.Length
= count
* sizeof(uint32_t); /* capabilities buffer */
1285 arg
[3].Buffer
.Pointer
= (uint8_t *)buf
;
1287 status
= AcpiEvaluateObject(handle
, "_OSC", &arglist
, &retbuf
);
1288 if (ACPI_FAILURE(status
))
1290 retobj
= retbuf
.Pointer
;
1291 error
= ((uint32_t *)retobj
->Buffer
.Pointer
)[0] & ACPI_OSCERR_MASK
;
1295 if (error
& ACPI_OSCERR_OSCFAIL
)
1296 device_printf(dev
, "_OSC unable to process request\n");
1297 if (error
& ACPI_OSCERR_UUID
)
1298 device_printf(dev
, "_OSC unrecognized UUID (%s)\n", uuidstr
);
1299 if (error
& ACPI_OSCERR_REVISION
)
1300 device_printf(dev
, "_OSC unrecognized revision ID (%d)\n", revision
);
1301 if (error
& ACPI_OSCERR_CAPSMASKED
) {
1302 if ((buf
[0] & ACPI_OSC_QUERY_SUPPORT
) == 0) {
1303 for (i
= 1; i
< count
; i
++) {
1305 "_OSC capabilities have been masked: buf[%d]:%#x\n",
1306 i
, buf
[i
] & ~((uint32_t *)retobj
->Buffer
.Pointer
)[i
]);
1308 status
= AE_SUPPORT
;
1315 if (retbuf
.Pointer
!= NULL
)
1316 AcpiOsFree(retbuf
.Pointer
);
1320 /* Probe _HID and _CID for compatible ISA PNP ids. */
1322 acpi_isa_get_logicalid(device_t dev
)
1324 ACPI_DEVICE_INFO
*devinfo
;
1328 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1333 /* Fetch and validate the HID. */
1334 if ((h
= acpi_get_handle(dev
)) == NULL
||
1335 ACPI_FAILURE(AcpiGetObjectInfo(h
, &devinfo
)))
1338 if ((devinfo
->Valid
& ACPI_VALID_HID
) != 0)
1339 pnpid
= PNP_EISAID(devinfo
->HardwareId
.String
);
1343 AcpiOsFree(devinfo
);
1344 return_VALUE (pnpid
);
1348 acpi_isa_get_compatid(device_t dev
, uint32_t *cids
, int count
)
1350 ACPI_DEVICE_INFO
*devinfo
;
1355 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1361 /* Fetch and validate the CID */
1362 if ((h
= acpi_get_handle(dev
)) == NULL
||
1363 ACPI_FAILURE(AcpiGetObjectInfo(h
, &devinfo
)) ||
1364 (devinfo
->Valid
& ACPI_VALID_CID
) == 0)
1367 if (devinfo
->CompatibleIdList
.Count
< count
)
1368 count
= devinfo
->CompatibleIdList
.Count
;
1369 for (i
= 0; i
< count
; i
++) {
1370 if (strncmp(devinfo
->CompatibleIdList
.Ids
[i
].String
, "PNP", 3) != 0)
1372 *pnpid
++ = PNP_EISAID(devinfo
->CompatibleIdList
.Ids
[i
].String
);
1378 AcpiOsFree(devinfo
);
1379 return_VALUE (valid
);
1383 acpi_device_id_probe(device_t bus
, device_t dev
, char **ids
)
1388 h
= acpi_get_handle(dev
);
1389 if (ids
== NULL
|| h
== NULL
|| acpi_get_type(dev
) != ACPI_TYPE_DEVICE
)
1392 /* Try to match one of the array of IDs with a HID or CID. */
1393 for (i
= 0; ids
[i
] != NULL
; i
++) {
1394 if (acpi_MatchHid(h
, ids
[i
]))
1401 acpi_device_eval_obj(device_t bus
, device_t dev
, ACPI_STRING pathname
,
1402 ACPI_OBJECT_LIST
*parameters
, ACPI_BUFFER
*ret
)
1407 h
= ACPI_ROOT_OBJECT
;
1408 else if ((h
= acpi_get_handle(dev
)) == NULL
)
1409 return (AE_BAD_PARAMETER
);
1410 return (AcpiEvaluateObject(h
, pathname
, parameters
, ret
));
1414 acpi_device_pwr_for_sleep(device_t bus
, device_t dev
, int *dstate
)
1416 struct acpi_softc
*sc
;
1422 sc
= device_get_softc(bus
);
1423 handle
= acpi_get_handle(dev
);
1426 * XXX If we find these devices, don't try to power them down.
1427 * The serial and IRDA ports on my T23 hang the system when
1428 * set to D3 and it appears that such legacy devices may
1429 * need special handling in their drivers.
1431 if (handle
== NULL
||
1432 acpi_MatchHid(handle
, "PNP0500") ||
1433 acpi_MatchHid(handle
, "PNP0501") ||
1434 acpi_MatchHid(handle
, "PNP0502") ||
1435 acpi_MatchHid(handle
, "PNP0510") ||
1436 acpi_MatchHid(handle
, "PNP0511"))
1440 * Override next state with the value from _SxD, if present. If no
1441 * dstate argument was provided, don't fetch the return value.
1443 ksnprintf(sxd
, sizeof(sxd
), "_S%dD", sc
->acpi_sstate
);
1445 status
= acpi_GetInteger(handle
, sxd
, dstate
);
1447 status
= AcpiEvaluateObject(handle
, sxd
, NULL
, NULL
);
1464 /* Callback arg for our implementation of walking the namespace. */
1465 struct acpi_device_scan_ctx
{
1466 acpi_scan_cb_t user_fn
;
1472 acpi_device_scan_cb(ACPI_HANDLE h
, UINT32 level
, void *arg
, void **retval
)
1474 struct acpi_device_scan_ctx
*ctx
;
1475 device_t dev
, old_dev
;
1477 ACPI_OBJECT_TYPE type
;
1480 * Skip this device if we think we'll have trouble with it or it is
1481 * the parent where the scan began.
1483 ctx
= (struct acpi_device_scan_ctx
*)arg
;
1484 if (acpi_avoid(h
) || h
== ctx
->parent
)
1487 /* If this is not a valid device type (e.g., a method), skip it. */
1488 if (ACPI_FAILURE(AcpiGetType(h
, &type
)))
1490 if (type
!= ACPI_TYPE_DEVICE
&& type
!= ACPI_TYPE_PROCESSOR
&&
1491 type
!= ACPI_TYPE_THERMAL
&& type
!= ACPI_TYPE_POWER
)
1495 * Call the user function with the current device. If it is unchanged
1496 * afterwards, return. Otherwise, we update the handle to the new dev.
1498 old_dev
= acpi_get_device(h
);
1500 status
= ctx
->user_fn(h
, &dev
, level
, ctx
->arg
);
1501 if (ACPI_FAILURE(status
) || old_dev
== dev
)
1504 /* Remove the old child and its connection to the handle. */
1505 if (old_dev
!= NULL
) {
1506 device_delete_child(device_get_parent(old_dev
), old_dev
);
1507 AcpiDetachData(h
, acpi_fake_objhandler
);
1510 /* Recreate the handle association if the user created a device. */
1512 AcpiAttachData(h
, acpi_fake_objhandler
, dev
);
1518 acpi_device_scan_children(device_t bus
, device_t dev
, int max_depth
,
1519 acpi_scan_cb_t user_fn
, void *arg
)
1522 struct acpi_device_scan_ctx ctx
;
1524 if (acpi_disabled("children"))
1528 h
= ACPI_ROOT_OBJECT
;
1529 else if ((h
= acpi_get_handle(dev
)) == NULL
)
1530 return (AE_BAD_PARAMETER
);
1531 ctx
.user_fn
= user_fn
;
1534 return (AcpiWalkNamespace(ACPI_TYPE_ANY
, h
, max_depth
,
1535 acpi_device_scan_cb
, NULL
, &ctx
, NULL
));
1539 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1540 * device power states since it's close enough to ACPI.
1543 acpi_set_powerstate_method(device_t bus
, device_t child
, int state
)
1550 h
= acpi_get_handle(child
);
1551 if (state
< ACPI_STATE_D0
|| state
> ACPI_STATE_D3
)
1556 /* Ignore errors if the power methods aren't present. */
1557 status
= acpi_pwr_switch_consumer(h
, state
);
1558 if (ACPI_FAILURE(status
) && status
!= AE_NOT_FOUND
1559 && status
!= AE_BAD_PARAMETER
)
1560 device_printf(bus
, "failed to set ACPI power state D%d on %s: %s\n",
1561 state
, acpi_name(h
), AcpiFormatException(status
));
1567 acpi_isa_pnp_probe(device_t bus
, device_t child
, struct isa_pnp_id
*ids
)
1569 int result
, cid_count
, i
;
1570 uint32_t lid
, cids
[8];
1572 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1575 * ISA-style drivers attached to ACPI may persist and
1576 * probe manually if we return ENOENT. We never want
1577 * that to happen, so don't ever return it.
1581 /* Scan the supplied IDs for a match */
1582 lid
= acpi_isa_get_logicalid(child
);
1583 cid_count
= acpi_isa_get_compatid(child
, cids
, 8);
1584 while (ids
&& ids
->ip_id
) {
1585 if (lid
== ids
->ip_id
) {
1589 for (i
= 0; i
< cid_count
; i
++) {
1590 if (cids
[i
] == ids
->ip_id
) {
1599 if (result
== 0 && ids
->ip_desc
)
1600 device_set_desc(child
, ids
->ip_desc
);
1602 return_VALUE (result
);
1606 * Look for a MCFG table. If it is present, use the settings for
1607 * domain (segment) 0 to setup PCI config space access via the memory
1611 acpi_enable_pcie(void)
1613 ACPI_TABLE_HEADER
*hdr
;
1614 ACPI_MCFG_ALLOCATION
*alloc
, *end
;
1617 status
= AcpiGetTable(ACPI_SIG_MCFG
, 1, &hdr
);
1618 if (ACPI_FAILURE(status
))
1621 end
= (ACPI_MCFG_ALLOCATION
*)((char *)hdr
+ hdr
->Length
);
1622 alloc
= (ACPI_MCFG_ALLOCATION
*)((ACPI_TABLE_MCFG
*)hdr
+ 1);
1623 while (alloc
< end
) {
1624 if (alloc
->PciSegment
== 0) {
1625 pcie_cfgregopen(alloc
->Address
, alloc
->StartBusNumber
,
1626 alloc
->EndBusNumber
);
1634 * Scan all of the ACPI namespace and attach child devices.
1636 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1637 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1638 * However, in violation of the spec, some systems place their PCI link
1639 * devices in \, so we have to walk the whole namespace. We check the
1640 * type of namespace nodes, so this should be ok.
1643 acpi_probe_children(device_t bus
)
1646 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1649 * Scan the namespace and insert placeholders for all the devices that
1650 * we find. We also probe/attach any early devices.
1652 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1653 * we want to create nodes for all devices, not just those that are
1654 * currently present. (This assumes that we don't want to create/remove
1655 * devices as they appear, which might be smarter.)
1657 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "namespace scan\n"));
1658 AcpiWalkNamespace(ACPI_TYPE_ANY
, ACPI_ROOT_OBJECT
, 100,
1659 acpi_probe_child
, NULL
, bus
, NULL
);
1661 /* Pre-allocate resources for our rman from any sysresource devices. */
1662 acpi_sysres_alloc(bus
);
1663 /* Create any static children by calling device identify methods. */
1664 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "device identify routines\n"));
1665 bus_generic_probe(bus
);
1667 /* Probe/attach all children, created staticly and from the namespace. */
1668 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "first bus_generic_attach\n"));
1669 bus_generic_attach(bus
);
1672 * Some of these children may have attached others as part of their attach
1673 * process (eg. the root PCI bus driver), so rescan.
1675 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "second bus_generic_attach\n"));
1676 bus_generic_attach(bus
);
1678 /* Attach wake sysctls. */
1679 acpi_wake_sysctl_walk(bus
);
1681 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "done attaching children\n"));
1686 * Determine the probe order for a given device.
1689 acpi_probe_order(ACPI_HANDLE handle
, int *order
)
1691 ACPI_OBJECT_TYPE type
;
1694 * 1. I/O port and memory system resource holders
1695 * 2. Embedded controllers (to handle early accesses)
1696 * 3. PCI Link Devices
1699 AcpiGetType(handle
, &type
);
1700 if (acpi_MatchHid(handle
, "PNP0C01") || acpi_MatchHid(handle
, "PNP0C02"))
1702 else if (acpi_MatchHid(handle
, "PNP0C09"))
1704 else if (acpi_MatchHid(handle
, "PNP0C0F"))
1706 else if (type
== ACPI_TYPE_PROCESSOR
)
1711 * Evaluate a child device and determine whether we might attach a device to
1715 acpi_probe_child(ACPI_HANDLE handle
, UINT32 level
, void *context
, void **status
)
1717 struct acpi_prw_data prw
;
1718 ACPI_OBJECT_TYPE type
;
1720 device_t bus
, child
;
1724 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1726 if (acpi_disabled("children"))
1727 return_ACPI_STATUS (AE_OK
);
1729 /* Skip this device if we think we'll have trouble with it. */
1730 if (acpi_avoid(handle
))
1731 return_ACPI_STATUS (AE_OK
);
1733 bus
= (device_t
)context
;
1734 if (ACPI_SUCCESS(AcpiGetType(handle
, &type
))) {
1735 handle_str
= acpi_name(handle
);
1737 case ACPI_TYPE_DEVICE
:
1739 * Since we scan from \, be sure to skip system scope objects.
1740 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1741 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
1742 * during the intialization and \_TZ_ is to support Notify() on it.
1744 if (strcmp(handle_str
, "\\_SB_") == 0 ||
1745 strcmp(handle_str
, "\\_TZ_") == 0)
1748 if (acpi_parse_prw(handle
, &prw
) == 0)
1749 AcpiSetupGpeForWake(handle
, prw
.gpe_handle
, prw
.gpe_bit
);
1752 case ACPI_TYPE_PROCESSOR
:
1753 case ACPI_TYPE_THERMAL
:
1754 case ACPI_TYPE_POWER
:
1756 * Create a placeholder device for this node. Sort the
1757 * placeholder so that the probe/attach passes will run
1758 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1759 * are reserved for special objects (i.e., system
1760 * resources). CPU devices have a very high order to
1761 * ensure they are probed after other devices.
1763 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "scanning '%s'\n", handle_str
));
1764 order
= level
* 10 + 100;
1765 acpi_probe_order(handle
, &order
);
1766 child
= BUS_ADD_CHILD(bus
, bus
, order
, NULL
, -1);
1770 /* Associate the handle with the device_t and vice versa. */
1771 acpi_set_handle(child
, handle
);
1772 AcpiAttachData(handle
, acpi_fake_objhandler
, child
);
1775 * Check that the device is present. If it's not present,
1776 * leave it disabled (so that we have a device_t attached to
1777 * the handle, but we don't probe it).
1779 * XXX PCI link devices sometimes report "present" but not
1780 * "functional" (i.e. if disabled). Go ahead and probe them
1781 * anyway since we may enable them later.
1783 if (type
== ACPI_TYPE_DEVICE
&& !acpi_DeviceIsPresent(child
)) {
1784 /* Never disable PCI link devices. */
1785 if (acpi_MatchHid(handle
, "PNP0C0F"))
1788 * Docking stations should remain enabled since the system
1789 * may be undocked at boot.
1791 if (ACPI_SUCCESS(AcpiGetHandle(handle
, "_DCK", &h
)))
1794 device_disable(child
);
1799 * Get the device's resource settings and attach them.
1800 * Note that if the device has _PRS but no _CRS, we need
1801 * to decide when it's appropriate to try to configure the
1802 * device. Ignore the return value here; it's OK for the
1803 * device not to have any resources.
1805 acpi_parse_resources(child
, handle
, &acpi_res_parse_set
, NULL
);
1810 return_ACPI_STATUS (AE_OK
);
1814 * AcpiAttachData() requires an object handler but never uses it. This is a
1815 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1818 acpi_fake_objhandler(ACPI_HANDLE h
, void *data
)
1823 acpi_shutdown_final(void *arg
, int howto
)
1825 struct acpi_softc
*sc
;
1829 * XXX Shutdown code should only run on the BSP (cpuid 0).
1830 * Some chipsets do not power off the system correctly if called from
1834 if ((howto
& RB_POWEROFF
) != 0) {
1835 status
= AcpiEnterSleepStatePrep(ACPI_STATE_S5
);
1836 if (ACPI_FAILURE(status
)) {
1837 device_printf(sc
->acpi_dev
, "AcpiEnterSleepStatePrep failed - %s\n",
1838 AcpiFormatException(status
));
1841 device_printf(sc
->acpi_dev
, "Powering system off\n");
1842 ACPI_DISABLE_IRQS();
1843 status
= AcpiEnterSleepState(ACPI_STATE_S5
);
1844 if (ACPI_FAILURE(status
)) {
1845 device_printf(sc
->acpi_dev
, "power-off failed - %s\n",
1846 AcpiFormatException(status
));
1849 device_printf(sc
->acpi_dev
, "power-off failed - timeout\n");
1851 } else if ((howto
& RB_HALT
) == 0 && sc
->acpi_handle_reboot
) {
1852 /* Reboot using the reset register. */
1853 status
= AcpiReset();
1854 if (ACPI_FAILURE(status
)) {
1855 if (status
!= AE_NOT_EXIST
)
1856 device_printf(sc
->acpi_dev
, "reset failed - %s\n",
1857 AcpiFormatException(status
));
1860 device_printf(sc
->acpi_dev
, "reset failed - timeout\n");
1862 } else if (sc
->acpi_do_disable
&& panicstr
== NULL
) {
1864 * Only disable ACPI if the user requested. On some systems, writing
1865 * the disable value to SMI_CMD hangs the system.
1867 device_printf(sc
->acpi_dev
, "Shutting down\n");
1873 acpi_enable_fixed_events(struct acpi_softc
*sc
)
1875 static int first_time
= 1;
1877 /* Enable and clear fixed events and install handlers. */
1878 if ((AcpiGbl_FADT
.Flags
& ACPI_FADT_POWER_BUTTON
) == 0) {
1879 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON
);
1880 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON
,
1881 acpi_event_power_button_sleep
, sc
);
1883 device_printf(sc
->acpi_dev
, "Power Button (fixed)\n");
1885 if ((AcpiGbl_FADT
.Flags
& ACPI_FADT_SLEEP_BUTTON
) == 0) {
1886 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON
);
1887 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON
,
1888 acpi_event_sleep_button_sleep
, sc
);
1890 device_printf(sc
->acpi_dev
, "Sleep Button (fixed)\n");
1897 * Returns true if the device is actually present and should
1898 * be attached to. This requires the present, enabled, UI-visible
1899 * and diagnostics-passed bits to be set.
1902 acpi_DeviceIsPresent(device_t dev
)
1904 ACPI_DEVICE_INFO
*devinfo
;
1909 if ((h
= acpi_get_handle(dev
)) == NULL
||
1910 ACPI_FAILURE(AcpiGetObjectInfo(h
, &devinfo
)))
1913 /* If no _STA method, must be present */
1914 if ((devinfo
->Valid
& ACPI_VALID_STA
) == 0)
1917 /* Return true for 'present' and 'functioning' */
1918 if (ACPI_DEVICE_PRESENT(devinfo
->CurrentStatus
))
1921 AcpiOsFree(devinfo
);
1926 * Returns true if the battery is actually present and inserted.
1929 acpi_BatteryIsPresent(device_t dev
)
1931 ACPI_DEVICE_INFO
*devinfo
;
1936 if ((h
= acpi_get_handle(dev
)) == NULL
||
1937 ACPI_FAILURE(AcpiGetObjectInfo(h
, &devinfo
)))
1940 /* If no _STA method, must be present */
1941 if ((devinfo
->Valid
& ACPI_VALID_STA
) == 0)
1944 /* Return true for 'present', 'battery present', and 'functioning' */
1945 if (ACPI_BATTERY_PRESENT(devinfo
->CurrentStatus
))
1948 AcpiOsFree(devinfo
);
1953 * Match a HID string against a handle
1956 acpi_MatchHid(ACPI_HANDLE h
, const char *hid
)
1958 ACPI_DEVICE_INFO
*devinfo
;
1962 if (hid
== NULL
|| h
== NULL
||
1963 ACPI_FAILURE(AcpiGetObjectInfo(h
, &devinfo
)))
1966 if ((devinfo
->Valid
& ACPI_VALID_HID
) != 0 &&
1967 strcmp(hid
, devinfo
->HardwareId
.String
) == 0)
1969 else if ((devinfo
->Valid
& ACPI_VALID_CID
) != 0) {
1970 for (i
= 0; i
< devinfo
->CompatibleIdList
.Count
; i
++) {
1971 if (strcmp(hid
, devinfo
->CompatibleIdList
.Ids
[i
].String
) == 0) {
1978 AcpiOsFree(devinfo
);
1983 * Match a UID string against a handle
1986 acpi_MatchUid(ACPI_HANDLE h
, const char *uid
)
1988 ACPI_DEVICE_INFO
*devinfo
;
1992 if (uid
== NULL
|| h
== NULL
||
1993 ACPI_FAILURE(AcpiGetObjectInfo(h
, &devinfo
)))
1996 if ((devinfo
->Valid
& ACPI_VALID_UID
) != 0 &&
1997 strcmp(uid
, devinfo
->UniqueId
.String
) == 0)
2000 AcpiOsFree(devinfo
);
2005 * Return the handle of a named object within our scope, ie. that of (parent)
2006 * or one if its parents.
2009 acpi_GetHandleInScope(ACPI_HANDLE parent
, char *path
, ACPI_HANDLE
*result
)
2014 /* Walk back up the tree to the root */
2016 status
= AcpiGetHandle(parent
, path
, &r
);
2017 if (ACPI_SUCCESS(status
)) {
2021 /* XXX Return error here? */
2022 if (status
!= AE_NOT_FOUND
)
2024 if (ACPI_FAILURE(AcpiGetParent(parent
, &r
)))
2025 return (AE_NOT_FOUND
);
2031 * Allocate a buffer with a preset data size.
2034 acpi_AllocBuffer(int size
)
2038 if ((buf
= kmalloc(size
+ sizeof(*buf
), M_ACPIDEV
, M_NOWAIT
)) == NULL
)
2041 buf
->Pointer
= (void *)(buf
+ 1);
2046 acpi_SetInteger(ACPI_HANDLE handle
, char *path
, UINT32 number
)
2049 ACPI_OBJECT_LIST args
;
2051 arg1
.Type
= ACPI_TYPE_INTEGER
;
2052 arg1
.Integer
.Value
= number
;
2054 args
.Pointer
= &arg1
;
2056 return (AcpiEvaluateObject(handle
, path
, &args
, NULL
));
2060 * Evaluate a path that should return an integer.
2063 acpi_GetInteger(ACPI_HANDLE handle
, char *path
, UINT32
*number
)
2070 handle
= ACPI_ROOT_OBJECT
;
2073 * Assume that what we've been pointed at is an Integer object, or
2074 * a method that will return an Integer.
2076 buf
.Pointer
= ¶m
;
2077 buf
.Length
= sizeof(param
);
2078 status
= AcpiEvaluateObject(handle
, path
, NULL
, &buf
);
2079 if (ACPI_SUCCESS(status
)) {
2080 if (param
.Type
== ACPI_TYPE_INTEGER
)
2081 *number
= param
.Integer
.Value
;
2087 * In some applications, a method that's expected to return an Integer
2088 * may instead return a Buffer (probably to simplify some internal
2089 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
2090 * convert it into an Integer as best we can.
2094 if (status
== AE_BUFFER_OVERFLOW
) {
2095 if ((buf
.Pointer
= AcpiOsAllocate(buf
.Length
)) == NULL
) {
2096 status
= AE_NO_MEMORY
;
2098 status
= AcpiEvaluateObject(handle
, path
, NULL
, &buf
);
2099 if (ACPI_SUCCESS(status
))
2100 status
= acpi_ConvertBufferToInteger(&buf
, number
);
2101 AcpiOsFree(buf
.Pointer
);
2108 acpi_ConvertBufferToInteger(ACPI_BUFFER
*bufp
, UINT32
*number
)
2114 p
= (ACPI_OBJECT
*)bufp
->Pointer
;
2115 if (p
->Type
== ACPI_TYPE_INTEGER
) {
2116 *number
= p
->Integer
.Value
;
2119 if (p
->Type
!= ACPI_TYPE_BUFFER
)
2121 if (p
->Buffer
.Length
> sizeof(int))
2122 return (AE_BAD_DATA
);
2125 val
= p
->Buffer
.Pointer
;
2126 for (i
= 0; i
< p
->Buffer
.Length
; i
++)
2127 *number
+= val
[i
] << (i
* 8);
2132 * Iterate over the elements of an a package object, calling the supplied
2133 * function for each element.
2135 * XXX possible enhancement might be to abort traversal on error.
2138 acpi_ForeachPackageObject(ACPI_OBJECT
*pkg
,
2139 void (*func
)(ACPI_OBJECT
*comp
, void *arg
), void *arg
)
2144 if (pkg
== NULL
|| pkg
->Type
!= ACPI_TYPE_PACKAGE
)
2145 return (AE_BAD_PARAMETER
);
2147 /* Iterate over components */
2149 comp
= pkg
->Package
.Elements
;
2150 for (; i
< pkg
->Package
.Count
; i
++, comp
++)
2157 * Find the (index)th resource object in a set.
2160 acpi_FindIndexedResource(ACPI_BUFFER
*buf
, int index
, ACPI_RESOURCE
**resp
)
2165 rp
= (ACPI_RESOURCE
*)buf
->Pointer
;
2169 if (rp
> (ACPI_RESOURCE
*)((uint8_t *)buf
->Pointer
+ buf
->Length
))
2170 return (AE_BAD_PARAMETER
);
2172 /* Check for terminator */
2173 if (rp
->Type
== ACPI_RESOURCE_TYPE_END_TAG
|| rp
->Length
== 0)
2174 return (AE_NOT_FOUND
);
2175 rp
= ACPI_NEXT_RESOURCE(rp
);
2184 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2186 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2187 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2188 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2191 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2194 acpi_AppendBufferResource(ACPI_BUFFER
*buf
, ACPI_RESOURCE
*res
)
2199 /* Initialise the buffer if necessary. */
2200 if (buf
->Pointer
== NULL
) {
2201 buf
->Length
= ACPI_INITIAL_RESOURCE_BUFFER_SIZE
;
2202 if ((buf
->Pointer
= AcpiOsAllocate(buf
->Length
)) == NULL
)
2203 return (AE_NO_MEMORY
);
2204 rp
= (ACPI_RESOURCE
*)buf
->Pointer
;
2205 rp
->Type
= ACPI_RESOURCE_TYPE_END_TAG
;
2206 rp
->Length
= ACPI_RS_SIZE_MIN
;
2212 * Scan the current buffer looking for the terminator.
2213 * This will either find the terminator or hit the end
2214 * of the buffer and return an error.
2216 rp
= (ACPI_RESOURCE
*)buf
->Pointer
;
2218 /* Range check, don't go outside the buffer */
2219 if (rp
>= (ACPI_RESOURCE
*)((uint8_t *)buf
->Pointer
+ buf
->Length
))
2220 return (AE_BAD_PARAMETER
);
2221 if (rp
->Type
== ACPI_RESOURCE_TYPE_END_TAG
|| rp
->Length
== 0)
2223 rp
= ACPI_NEXT_RESOURCE(rp
);
2227 * Check the size of the buffer and expand if required.
2230 * size of existing resources before terminator +
2231 * size of new resource and header +
2232 * size of terminator.
2234 * Note that this loop should really only run once, unless
2235 * for some reason we are stuffing a *really* huge resource.
2237 while ((((uint8_t *)rp
- (uint8_t *)buf
->Pointer
) +
2238 res
->Length
+ ACPI_RS_SIZE_NO_DATA
+
2239 ACPI_RS_SIZE_MIN
) >= buf
->Length
) {
2240 if ((newp
= AcpiOsAllocate(buf
->Length
* 2)) == NULL
)
2241 return (AE_NO_MEMORY
);
2242 bcopy(buf
->Pointer
, newp
, buf
->Length
);
2243 rp
= (ACPI_RESOURCE
*)((uint8_t *)newp
+
2244 ((uint8_t *)rp
- (uint8_t *)buf
->Pointer
));
2245 AcpiOsFree(buf
->Pointer
);
2246 buf
->Pointer
= newp
;
2247 buf
->Length
+= buf
->Length
;
2250 /* Insert the new resource. */
2251 bcopy(res
, rp
, res
->Length
+ ACPI_RS_SIZE_NO_DATA
);
2253 /* And add the terminator. */
2254 rp
= ACPI_NEXT_RESOURCE(rp
);
2255 rp
->Type
= ACPI_RESOURCE_TYPE_END_TAG
;
2256 rp
->Length
= ACPI_RS_SIZE_MIN
;
2262 * Set interrupt model.
2265 acpi_SetIntrModel(int model
)
2268 return (acpi_SetInteger(ACPI_ROOT_OBJECT
, "_PIC", model
));
2272 * DEPRECATED. This interface has serious deficiencies and will be
2275 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2276 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2279 acpi_SetSleepState(struct acpi_softc
*sc
, int state
)
2284 device_printf(sc
->acpi_dev
,
2285 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2288 return (acpi_EnterSleepState(sc
, state
));
2292 acpi_sleep_force(void *arg
)
2294 struct acpi_softc
*sc
;
2297 device_printf(sc
->acpi_dev
,
2298 "suspend request timed out, forcing sleep now\n");
2299 if (ACPI_FAILURE(acpi_EnterSleepState(sc
, sc
->acpi_next_sstate
)))
2300 device_printf(sc
->acpi_dev
, "force sleep state S%d failed\n",
2301 sc
->acpi_next_sstate
);
2305 * Request that the system enter the given suspend state. All /dev/apm
2306 * devices and devd(8) will be notified. Userland then has a chance to
2307 * save state and acknowledge the request. The system sleeps once all
2311 acpi_ReqSleepState(struct acpi_softc
*sc
, int state
)
2314 struct apm_clone_data
*clone
;
2317 if (state
< ACPI_STATE_S1
|| state
> ACPI_STATE_S5
)
2320 /* S5 (soft-off) should be entered directly with no waiting. */
2321 if (state
== ACPI_STATE_S5
) {
2322 if (ACPI_SUCCESS(acpi_EnterSleepState(sc
, state
)))
2328 /* This platform does not support acpi suspend/resume. */
2329 return (EOPNOTSUPP
);
2331 /* If a suspend request is already in progress, just return. */
2333 if (sc
->acpi_next_sstate
!= 0) {
2338 /* Record the pending state and notify all apm devices. */
2339 sc
->acpi_next_sstate
= state
;
2341 STAILQ_FOREACH(clone
, &sc
->apm_cdevs
, entries
) {
2342 clone
->notify_status
= APM_EV_NONE
;
2343 if ((clone
->flags
& ACPI_EVF_DEVD
) == 0) {
2344 KNOTE(&clone
->sel_read
.si_note
, 0);
2349 /* If devd(8) is not running, immediately enter the sleep state. */
2350 if (devctl_process_running() == FALSE
) {
2352 if (ACPI_SUCCESS(acpi_EnterSleepState(sc
, sc
->acpi_next_sstate
))) {
2359 /* Now notify devd(8) also. */
2360 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT
, state
);
2363 * Set a timeout to fire if userland doesn't ack the suspend request
2364 * in time. This way we still eventually go to sleep if we were
2365 * overheating or running low on battery, even if userland is hung.
2366 * We cancel this timeout once all userland acks are in or the
2367 * suspend request is aborted.
2369 callout_reset(&sc
->susp_force_to
, 10 * hz
, acpi_sleep_force
, sc
);
2376 * Acknowledge (or reject) a pending sleep state. The caller has
2377 * prepared for suspend and is now ready for it to proceed. If the
2378 * error argument is non-zero, it indicates suspend should be cancelled
2379 * and gives an errno value describing why. Once all votes are in,
2380 * we suspend the system.
2383 acpi_AckSleepState(struct apm_clone_data
*clone
, int error
)
2385 struct acpi_softc
*sc
;
2388 /* This platform does not support acpi suspend/resume. */
2389 return (EOPNOTSUPP
);
2391 /* If no pending sleep state, return an error. */
2393 sc
= clone
->acpi_sc
;
2394 if (sc
->acpi_next_sstate
== 0) {
2399 /* Caller wants to abort suspend process. */
2401 sc
->acpi_next_sstate
= 0;
2402 callout_stop(&sc
->susp_force_to
);
2403 device_printf(sc
->acpi_dev
,
2404 "listener on %s cancelled the pending suspend\n",
2405 devtoname(clone
->cdev
));
2411 * Mark this device as acking the suspend request. Then, walk through
2412 * all devices, seeing if they agree yet. We only count devices that
2413 * are writable since read-only devices couldn't ack the request.
2415 clone
->notify_status
= APM_EV_ACKED
;
2417 STAILQ_FOREACH(clone
, &sc
->apm_cdevs
, entries
) {
2418 if ((clone
->flags
& ACPI_EVF_WRITE
) != 0 &&
2419 clone
->notify_status
!= APM_EV_ACKED
) {
2425 /* If all devices have voted "yes", we will suspend now. */
2427 callout_stop(&sc
->susp_force_to
);
2431 if (ACPI_FAILURE(acpi_EnterSleepState(sc
, sc
->acpi_next_sstate
)))
2439 acpi_sleep_enable(void *arg
)
2441 ((struct acpi_softc
*)arg
)->acpi_sleep_disabled
= 0;
2444 enum acpi_sleep_state
{
2447 ACPI_SS_DEV_SUSPEND
,
2453 * Enter the desired system sleep state.
2455 * Currently we support S1-S5 but S4 is only S4BIOS
2458 acpi_EnterSleepState(struct acpi_softc
*sc
, int state
)
2463 enum acpi_sleep_state slp_state
;
2465 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__
, state
);
2467 /* Re-entry once we're suspending is not allowed. */
2470 if (sc
->acpi_sleep_disabled
) {
2472 device_printf(sc
->acpi_dev
,
2473 "suspend request ignored (not ready yet)\n");
2476 sc
->acpi_sleep_disabled
= 1;
2480 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2481 * drivers need this.
2485 slp_state
= ACPI_SS_NONE
;
2491 status
= AcpiGetSleepTypeData(state
, &TypeA
, &TypeB
);
2492 if (status
== AE_NOT_FOUND
) {
2493 device_printf(sc
->acpi_dev
,
2494 "Sleep state S%d not supported by BIOS\n", state
);
2496 } else if (ACPI_FAILURE(status
)) {
2497 device_printf(sc
->acpi_dev
, "AcpiGetSleepTypeData failed - %s\n",
2498 AcpiFormatException(status
));
2502 sc
->acpi_sstate
= state
;
2504 /* Enable any GPEs as appropriate and requested by the user. */
2505 acpi_wake_prep_walk(state
);
2506 slp_state
= ACPI_SS_GPE_SET
;
2509 * Inform all devices that we are going to sleep. If at least one
2510 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2512 * XXX Note that a better two-pass approach with a 'veto' pass
2513 * followed by a "real thing" pass would be better, but the current
2514 * bus interface does not provide for this.
2516 if (DEVICE_SUSPEND(root_bus
) != 0) {
2517 device_printf(sc
->acpi_dev
, "device_suspend failed\n");
2520 slp_state
= ACPI_SS_DEV_SUSPEND
;
2522 /* If testing device suspend only, back out of everything here. */
2523 if (acpi_susp_bounce
)
2526 status
= AcpiEnterSleepStatePrep(state
);
2527 if (ACPI_FAILURE(status
)) {
2528 device_printf(sc
->acpi_dev
, "AcpiEnterSleepStatePrep failed - %s\n",
2529 AcpiFormatException(status
));
2532 slp_state
= ACPI_SS_SLP_PREP
;
2534 if (sc
->acpi_sleep_delay
> 0)
2535 DELAY(sc
->acpi_sleep_delay
* 1000000);
2537 if (state
!= ACPI_STATE_S1
) {
2538 acpi_sleep_machdep(sc
, state
);
2540 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2541 if (state
== ACPI_STATE_S4
)
2544 ACPI_DISABLE_IRQS();
2545 status
= AcpiEnterSleepState(state
);
2546 if (ACPI_FAILURE(status
)) {
2547 device_printf(sc
->acpi_dev
, "AcpiEnterSleepState failed - %s\n",
2548 AcpiFormatException(status
));
2552 slp_state
= ACPI_SS_SLEPT
;
2556 * Shut down cleanly and power off. This will call us back through the
2557 * shutdown handlers.
2559 shutdown_nice(RB_POWEROFF
);
2563 status
= AE_BAD_PARAMETER
;
2568 * Back out state according to how far along we got in the suspend
2569 * process. This handles both the error and success cases.
2571 sc
->acpi_next_sstate
= 0;
2572 if (slp_state
>= ACPI_SS_GPE_SET
) {
2573 acpi_wake_prep_walk(state
);
2574 sc
->acpi_sstate
= ACPI_STATE_S0
;
2576 if (slp_state
>= ACPI_SS_SLP_PREP
)
2577 AcpiLeaveSleepState(state
);
2578 if (slp_state
>= ACPI_SS_DEV_SUSPEND
)
2579 DEVICE_RESUME(root_bus
);
2580 if (slp_state
>= ACPI_SS_SLEPT
)
2581 acpi_enable_fixed_events(sc
);
2583 /* Allow another sleep request after a while. */
2584 /* XXX: needs timeout */
2585 if (state
!= ACPI_STATE_S5
)
2586 acpi_sleep_enable(sc
);
2588 /* Run /etc/rc.resume after we are back. */
2589 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT
, state
);
2593 return_ACPI_STATUS (status
);
2596 /* Enable or disable the device's GPE. */
2598 acpi_wake_set_enable(device_t dev
, int enable
)
2600 struct acpi_prw_data prw
;
2604 /* Make sure the device supports waking the system and get the GPE. */
2605 if (acpi_parse_prw(acpi_get_handle(dev
), &prw
) != 0)
2608 flags
= acpi_get_flags(dev
);
2610 status
= AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
,
2612 if (ACPI_FAILURE(status
)) {
2613 device_printf(dev
, "enable wake failed\n");
2616 acpi_set_flags(dev
, flags
| ACPI_FLAG_WAKE_ENABLED
);
2618 status
= AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
,
2620 if (ACPI_FAILURE(status
)) {
2621 device_printf(dev
, "disable wake failed\n");
2624 acpi_set_flags(dev
, flags
& ~ACPI_FLAG_WAKE_ENABLED
);
2631 acpi_wake_sleep_prep(ACPI_HANDLE handle
, int sstate
)
2633 struct acpi_prw_data prw
;
2636 /* Check that this is a wake-capable device and get its GPE. */
2637 if (acpi_parse_prw(handle
, &prw
) != 0)
2639 dev
= acpi_get_device(handle
);
2642 * The destination sleep state must be less than (i.e., higher power)
2643 * or equal to the value specified by _PRW. If this GPE cannot be
2644 * enabled for the next sleep state, then disable it. If it can and
2645 * the user requested it be enabled, turn on any required power resources
2648 if (sstate
> prw
.lowest_wake
) {
2649 AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
, ACPI_GPE_DISABLE
);
2651 device_printf(dev
, "wake_prep disabled wake for %s (S%d)\n",
2652 acpi_name(handle
), sstate
);
2653 } else if (dev
&& (acpi_get_flags(dev
) & ACPI_FLAG_WAKE_ENABLED
) != 0) {
2654 acpi_pwr_wake_enable(handle
, 1);
2655 acpi_SetInteger(handle
, "_PSW", 1);
2657 device_printf(dev
, "wake_prep enabled for %s (S%d)\n",
2658 acpi_name(handle
), sstate
);
2665 acpi_wake_run_prep(ACPI_HANDLE handle
, int sstate
)
2667 struct acpi_prw_data prw
;
2671 * Check that this is a wake-capable device and get its GPE. Return
2672 * now if the user didn't enable this device for wake.
2674 if (acpi_parse_prw(handle
, &prw
) != 0)
2676 dev
= acpi_get_device(handle
);
2677 if (dev
== NULL
|| (acpi_get_flags(dev
) & ACPI_FLAG_WAKE_ENABLED
) == 0)
2681 * If this GPE couldn't be enabled for the previous sleep state, it was
2682 * disabled before going to sleep so re-enable it. If it was enabled,
2683 * clear _PSW and turn off any power resources it used.
2685 if (sstate
> prw
.lowest_wake
) {
2686 AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
, ACPI_GPE_ENABLE
);
2688 device_printf(dev
, "run_prep re-enabled %s\n", acpi_name(handle
));
2690 acpi_SetInteger(handle
, "_PSW", 0);
2691 acpi_pwr_wake_enable(handle
, 0);
2693 device_printf(dev
, "run_prep cleaned up for %s\n",
2701 acpi_wake_prep(ACPI_HANDLE handle
, UINT32 level
, void *context
, void **status
)
2705 /* If suspending, run the sleep prep function, otherwise wake. */
2706 sstate
= *(int *)context
;
2707 if (AcpiGbl_SystemAwakeAndRunning
)
2708 acpi_wake_sleep_prep(handle
, sstate
);
2710 acpi_wake_run_prep(handle
, sstate
);
2714 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2716 acpi_wake_prep_walk(int sstate
)
2718 ACPI_HANDLE sb_handle
;
2720 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT
, "\\_SB_", &sb_handle
))) {
2721 AcpiWalkNamespace(ACPI_TYPE_DEVICE
, sb_handle
, 100,
2722 acpi_wake_prep
, NULL
, &sstate
, NULL
);
2727 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2729 acpi_wake_sysctl_walk(device_t dev
)
2732 int error
, i
, numdevs
;
2737 error
= device_get_children(dev
, &devlist
, &numdevs
);
2738 if (error
!= 0 || numdevs
== 0) {
2740 kfree(devlist
, M_TEMP
);
2743 for (i
= 0; i
< numdevs
; i
++) {
2745 acpi_wake_sysctl_walk(child
);
2746 if (!device_is_attached(child
))
2748 status
= AcpiEvaluateObject(acpi_get_handle(child
), "_PRW", NULL
, NULL
);
2749 if (ACPI_SUCCESS(status
)) {
2750 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child
),
2751 SYSCTL_CHILDREN(device_get_sysctl_tree(child
)), OID_AUTO
,
2752 "wake", CTLTYPE_INT
| CTLFLAG_RW
, child
, 0,
2753 acpi_wake_set_sysctl
, "I", "Device set to wake the system");
2756 kfree(devlist
, M_TEMP
);
2763 /* Enable or disable wake from userland. */
2765 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS
)
2770 dev
= (device_t
)arg1
;
2771 enable
= (acpi_get_flags(dev
) & ACPI_FLAG_WAKE_ENABLED
) ? 1 : 0;
2773 error
= sysctl_handle_int(oidp
, &enable
, 0, req
);
2774 if (error
!= 0 || req
->newptr
== NULL
)
2776 if (enable
!= 0 && enable
!= 1)
2779 return (acpi_wake_set_enable(dev
, enable
));
2783 /* Parse a device's _PRW into a structure. */
2785 acpi_parse_prw(ACPI_HANDLE h
, struct acpi_prw_data
*prw
)
2788 ACPI_BUFFER prw_buffer
;
2789 ACPI_OBJECT
*res
, *res2
;
2790 int error
, i
, power_count
;
2792 if (h
== NULL
|| prw
== NULL
)
2796 * The _PRW object (7.2.9) is only required for devices that have the
2797 * ability to wake the system from a sleeping state.
2800 prw_buffer
.Pointer
= NULL
;
2801 prw_buffer
.Length
= ACPI_ALLOCATE_BUFFER
;
2802 status
= AcpiEvaluateObject(h
, "_PRW", NULL
, &prw_buffer
);
2803 if (ACPI_FAILURE(status
))
2805 res
= (ACPI_OBJECT
*)prw_buffer
.Pointer
;
2808 if (!ACPI_PKG_VALID(res
, 2))
2812 * Element 1 of the _PRW object:
2813 * The lowest power system sleeping state that can be entered while still
2814 * providing wake functionality. The sleeping state being entered must
2815 * be less than (i.e., higher power) or equal to this value.
2817 if (acpi_PkgInt32(res
, 1, &prw
->lowest_wake
) != 0)
2821 * Element 0 of the _PRW object:
2823 switch (res
->Package
.Elements
[0].Type
) {
2824 case ACPI_TYPE_INTEGER
:
2826 * If the data type of this package element is numeric, then this
2827 * _PRW package element is the bit index in the GPEx_EN, in the
2828 * GPE blocks described in the FADT, of the enable bit that is
2829 * enabled for the wake event.
2831 prw
->gpe_handle
= NULL
;
2832 prw
->gpe_bit
= res
->Package
.Elements
[0].Integer
.Value
;
2835 case ACPI_TYPE_PACKAGE
:
2837 * If the data type of this package element is a package, then this
2838 * _PRW package element is itself a package containing two
2839 * elements. The first is an object reference to the GPE Block
2840 * device that contains the GPE that will be triggered by the wake
2841 * event. The second element is numeric and it contains the bit
2842 * index in the GPEx_EN, in the GPE Block referenced by the
2843 * first element in the package, of the enable bit that is enabled for
2846 * For example, if this field is a package then it is of the form:
2847 * Package() {\_SB.PCI0.ISA.GPE, 2}
2849 res2
= &res
->Package
.Elements
[0];
2850 if (!ACPI_PKG_VALID(res2
, 2))
2852 prw
->gpe_handle
= acpi_GetReference(NULL
, &res2
->Package
.Elements
[0]);
2853 if (prw
->gpe_handle
== NULL
)
2855 if (acpi_PkgInt32(res2
, 1, &prw
->gpe_bit
) != 0)
2863 /* Elements 2 to N of the _PRW object are power resources. */
2864 power_count
= res
->Package
.Count
- 2;
2865 if (power_count
> ACPI_PRW_MAX_POWERRES
) {
2866 kprintf("ACPI device %s has too many power resources\n", acpi_name(h
));
2869 prw
->power_res_count
= power_count
;
2870 for (i
= 0; i
< power_count
; i
++)
2871 prw
->power_res
[i
] = res
->Package
.Elements
[i
];
2874 if (prw_buffer
.Pointer
!= NULL
)
2875 AcpiOsFree(prw_buffer
.Pointer
);
2880 * ACPI Event Handlers
2883 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2886 acpi_system_eventhandler_sleep(void *arg
, int state
)
2888 struct acpi_softc
*sc
;
2891 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__
, state
);
2895 /* Check if button action is disabled. */
2896 if (state
== ACPI_S_STATES_MAX
+ 1)
2899 /* Request that the system prepare to enter the given suspend state. */
2900 ret
= acpi_ReqSleepState((struct acpi_softc
*)arg
, state
);
2902 device_printf(sc
->acpi_dev
,
2903 "request to enter state S%d failed (err %d)\n", state
, ret
);
2909 acpi_system_eventhandler_wakeup(void *arg
, int state
)
2912 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__
, state
);
2914 /* Currently, nothing to do for wakeup. */
2920 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2923 acpi_event_power_button_sleep(void *context
)
2925 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
2927 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
2929 EVENTHANDLER_INVOKE(acpi_sleep_event
, sc
->acpi_power_button_sx
);
2931 return_VALUE (ACPI_INTERRUPT_HANDLED
);
2935 acpi_event_power_button_wake(void *context
)
2937 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
2939 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
2941 EVENTHANDLER_INVOKE(acpi_wakeup_event
, sc
->acpi_power_button_sx
);
2943 return_VALUE (ACPI_INTERRUPT_HANDLED
);
2947 acpi_event_sleep_button_sleep(void *context
)
2949 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
2951 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
2953 EVENTHANDLER_INVOKE(acpi_sleep_event
, sc
->acpi_sleep_button_sx
);
2955 return_VALUE (ACPI_INTERRUPT_HANDLED
);
2959 acpi_event_sleep_button_wake(void *context
)
2961 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
2963 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
2965 EVENTHANDLER_INVOKE(acpi_wakeup_event
, sc
->acpi_sleep_button_sx
);
2967 return_VALUE (ACPI_INTERRUPT_HANDLED
);
2971 * XXX This static buffer is suboptimal. There is no locking so only
2972 * use this for single-threaded callers.
2975 acpi_name(ACPI_HANDLE handle
)
2978 static char data
[256];
2980 buf
.Length
= sizeof(data
);
2983 if (handle
&& ACPI_SUCCESS(AcpiGetName(handle
, ACPI_FULL_PATHNAME
, &buf
)))
2985 return ("(unknown)");
2989 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2990 * parts of the namespace.
2993 acpi_avoid(ACPI_HANDLE handle
)
2995 char *cp
, *env
, *np
;
2998 np
= acpi_name(handle
);
3001 if ((env
= kgetenv("debug.acpi.avoid")) == NULL
)
3004 /* Scan the avoid list checking for a match */
3007 while (*cp
!= 0 && isspace(*cp
))
3012 while (cp
[len
] != 0 && !isspace(cp
[len
]))
3014 if (!strncmp(cp
, np
, len
)) {
3026 * Debugging/bug-avoidance. Disable ACPI subsystem components.
3029 acpi_disabled(char *subsys
)
3034 if ((env
= kgetenv("debug.acpi.disabled")) == NULL
)
3036 if (strcmp(env
, "all") == 0) {
3041 /* Scan the disable list, checking for a match. */
3044 while (*cp
!= '\0' && isspace(*cp
))
3049 while (cp
[len
] != '\0' && !isspace(cp
[len
]))
3051 if (strncmp(cp
, subsys
, len
) == 0) {
3063 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
3064 * components are enabled by default. The ones that are not have to be
3065 * enabled via debug.acpi.enabled.
3068 acpi_enabled(char *subsys
)
3073 if ((env
= kgetenv("debug.acpi.enabled")) == NULL
)
3075 if (strcmp(env
, "all") == 0) {
3080 /* Scan the enable list, checking for a match. */
3083 while (*cp
!= '\0' && isspace(*cp
))
3088 while (cp
[len
] != '\0' && !isspace(cp
[len
]))
3090 if (strncmp(cp
, subsys
, len
) == 0) {
3102 * Control interface.
3104 * We multiplex ioctls for all participating ACPI devices here. Individual
3105 * drivers wanting to be accessible via /dev/acpi should use the
3106 * register/deregister interface to make their handlers visible.
3108 struct acpi_ioctl_hook
3110 TAILQ_ENTRY(acpi_ioctl_hook
) link
;
3116 static TAILQ_HEAD(,acpi_ioctl_hook
) acpi_ioctl_hooks
;
3117 static int acpi_ioctl_hooks_initted
;
3120 acpi_register_ioctl(u_long cmd
, acpi_ioctl_fn fn
, void *arg
)
3122 struct acpi_ioctl_hook
*hp
;
3124 if ((hp
= kmalloc(sizeof(*hp
), M_ACPIDEV
, M_NOWAIT
)) == NULL
)
3131 if (acpi_ioctl_hooks_initted
== 0) {
3132 TAILQ_INIT(&acpi_ioctl_hooks
);
3133 acpi_ioctl_hooks_initted
= 1;
3135 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks
, hp
, link
);
3142 acpi_deregister_ioctl(u_long cmd
, acpi_ioctl_fn fn
)
3144 struct acpi_ioctl_hook
*hp
;
3147 TAILQ_FOREACH(hp
, &acpi_ioctl_hooks
, link
)
3148 if (hp
->cmd
== cmd
&& hp
->fn
== fn
)
3152 TAILQ_REMOVE(&acpi_ioctl_hooks
, hp
, link
);
3153 kfree(hp
, M_ACPIDEV
);
3159 acpiopen(struct dev_open_args
*ap
)
3165 acpiclose(struct dev_close_args
*ap
)
3171 acpiioctl(struct dev_ioctl_args
*ap
)
3173 struct acpi_softc
*sc
;
3174 struct acpi_ioctl_hook
*hp
;
3179 sc
= ap
->a_head
.a_dev
->si_drv1
;
3182 * Scan the list of registered ioctls, looking for handlers.
3184 lwkt_gettoken(&acpi_token
);
3186 if (acpi_ioctl_hooks_initted
) {
3187 TAILQ_FOREACH(hp
, &acpi_ioctl_hooks
, link
) {
3188 if (hp
->cmd
== ap
->a_cmd
)
3194 error
= hp
->fn(ap
->a_cmd
, ap
->a_data
, hp
->arg
);
3195 lwkt_reltoken(&acpi_token
);
3200 * Core ioctls are not permitted for non-writable user.
3201 * Currently, other ioctls just fetch information.
3202 * Not changing system behavior.
3204 if ((ap
->a_fflag
& FWRITE
) == 0) {
3205 lwkt_reltoken(&acpi_token
);
3209 /* Core system ioctls. */
3210 switch (ap
->a_cmd
) {
3211 case ACPIIO_REQSLPSTATE
:
3212 state
= *(int *)ap
->a_data
;
3213 if (state
!= ACPI_STATE_S5
)
3214 error
= acpi_ReqSleepState(sc
, state
);
3216 device_printf(sc
->acpi_dev
,
3217 "power off via acpi ioctl not supported\n");
3221 case ACPIIO_ACKSLPSTATE
:
3224 error
= *(int *)ap
->a_data
;
3225 error
= acpi_AckSleepState(sc
->acpi_clone
, error
);
3228 case ACPIIO_SETSLPSTATE
: /* DEPRECATED */
3230 state
= *(int *)ap
->a_data
;
3231 if (state
>= ACPI_STATE_S0
&& state
<= ACPI_S_STATES_MAX
)
3232 if (ACPI_SUCCESS(acpi_SetSleepState(sc
, state
)))
3235 case ACPIIO_DO_MCALL
:
3236 if (acpi_allow_mcall
== 1) {
3237 struct acpi_mcall_ioctl_arg
*params
;
3238 ACPI_BUFFER result
= { ACPI_ALLOCATE_BUFFER
, NULL
};
3239 ACPI_OBJECT
*resobj
;
3242 params
= (struct acpi_mcall_ioctl_arg
*)ap
->a_data
;
3243 params
->retval
= AcpiEvaluateObject(NULL
, params
->path
,
3244 ¶ms
->args
, &result
);
3245 if (ACPI_SUCCESS(params
->retval
) && result
.Pointer
!= NULL
&&
3246 params
->result
.Pointer
!= NULL
) {
3247 params
->result
.Length
= min(params
->result
.Length
,
3249 copyout(result
.Pointer
, params
->result
.Pointer
,
3250 params
->result
.Length
);
3251 params
->reslen
= result
.Length
;
3252 if (result
.Length
>= sizeof(ACPI_OBJECT
)) {
3253 resobj
= (ACPI_OBJECT
*)params
->result
.Pointer
;
3254 switch (resobj
->Type
) {
3255 case ACPI_TYPE_STRING
:
3256 resobj
->String
.Pointer
= (char *)
3257 ((UINT8
*)(resobj
->String
.Pointer
) -
3258 (UINT8
*)result
.Pointer
+
3261 case ACPI_TYPE_BUFFER
:
3262 resobj
->Buffer
.Pointer
-= (UINT8
*)result
.Pointer
-
3269 if (result
.Pointer
!= NULL
)
3270 AcpiOsFree(result
.Pointer
);
3272 device_printf(sc
->acpi_dev
,
3273 "debug.acpi.allow_method_calls must be set\n");
3281 lwkt_reltoken(&acpi_token
);
3287 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
)
3291 UINT8 state
, TypeA
, TypeB
;
3293 sbuf_new(&sb
, NULL
, 32, SBUF_AUTOEXTEND
);
3294 for (state
= ACPI_STATE_S1
; state
< ACPI_S_STATES_MAX
+ 1; state
++)
3295 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state
, &TypeA
, &TypeB
)))
3296 sbuf_printf(&sb
, "S%d ", state
);
3299 error
= sysctl_handle_string(oidp
, sbuf_data(&sb
), sbuf_len(&sb
), req
);
3305 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
)
3307 char sleep_state
[10];
3309 u_int new_state
, old_state
;
3311 old_state
= *(u_int
*)oidp
->oid_arg1
;
3312 if (old_state
> ACPI_S_STATES_MAX
+ 1)
3313 strlcpy(sleep_state
, "unknown", sizeof(sleep_state
));
3315 strlcpy(sleep_state
, sleep_state_names
[old_state
], sizeof(sleep_state
));
3316 error
= sysctl_handle_string(oidp
, sleep_state
, sizeof(sleep_state
), req
);
3317 if (error
== 0 && req
->newptr
!= NULL
) {
3318 new_state
= ACPI_STATE_S0
;
3319 for (; new_state
<= ACPI_S_STATES_MAX
+ 1; new_state
++)
3320 if (strcmp(sleep_state
, sleep_state_names
[new_state
]) == 0)
3322 if (new_state
<= ACPI_S_STATES_MAX
+ 1) {
3323 if (new_state
!= old_state
)
3324 *(u_int
*)oidp
->oid_arg1
= new_state
;
3332 /* Inform devctl(4) when we receive a Notify. */
3334 acpi_UserNotify(const char *subsystem
, ACPI_HANDLE h
, uint8_t notify
)
3336 char notify_buf
[16];
3337 ACPI_BUFFER handle_buf
;
3340 if (subsystem
== NULL
)
3343 handle_buf
.Pointer
= NULL
;
3344 handle_buf
.Length
= ACPI_ALLOCATE_BUFFER
;
3345 status
= AcpiNsHandleToPathname(h
, &handle_buf
, FALSE
);
3346 if (ACPI_FAILURE(status
))
3348 ksnprintf(notify_buf
, sizeof(notify_buf
), "notify=0x%02x", notify
);
3349 devctl_notify("ACPI", subsystem
, handle_buf
.Pointer
, notify_buf
);
3350 AcpiOsFree(handle_buf
.Pointer
);
3355 * Support for parsing debug options from the kernel environment.
3357 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3358 * by specifying the names of the bits in the debug.acpi.layer and
3359 * debug.acpi.level environment variables. Bits may be unset by
3360 * prefixing the bit name with !.
3368 static struct debugtag dbg_layer
[] = {
3369 {"ACPI_UTILITIES", ACPI_UTILITIES
},
3370 {"ACPI_HARDWARE", ACPI_HARDWARE
},
3371 {"ACPI_EVENTS", ACPI_EVENTS
},
3372 {"ACPI_TABLES", ACPI_TABLES
},
3373 {"ACPI_NAMESPACE", ACPI_NAMESPACE
},
3374 {"ACPI_PARSER", ACPI_PARSER
},
3375 {"ACPI_DISPATCHER", ACPI_DISPATCHER
},
3376 {"ACPI_EXECUTER", ACPI_EXECUTER
},
3377 {"ACPI_RESOURCES", ACPI_RESOURCES
},
3378 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER
},
3379 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES
},
3380 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER
},
3381 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS
},
3383 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER
},
3384 {"ACPI_BATTERY", ACPI_BATTERY
},
3385 {"ACPI_BUS", ACPI_BUS
},
3386 {"ACPI_BUTTON", ACPI_BUTTON
},
3387 {"ACPI_EC", ACPI_EC
},
3388 {"ACPI_FAN", ACPI_FAN
},
3389 {"ACPI_POWERRES", ACPI_POWERRES
},
3390 {"ACPI_PROCESSOR", ACPI_PROCESSOR
},
3391 {"ACPI_THERMAL", ACPI_THERMAL
},
3392 {"ACPI_TIMER", ACPI_TIMER
},
3393 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS
},
3397 static struct debugtag dbg_level
[] = {
3398 {"ACPI_LV_INIT", ACPI_LV_INIT
},
3399 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT
},
3400 {"ACPI_LV_INFO", ACPI_LV_INFO
},
3401 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR
},
3402 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS
},
3404 /* Trace verbosity level 1 [Standard Trace Level] */
3405 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES
},
3406 {"ACPI_LV_PARSE", ACPI_LV_PARSE
},
3407 {"ACPI_LV_LOAD", ACPI_LV_LOAD
},
3408 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH
},
3409 {"ACPI_LV_EXEC", ACPI_LV_EXEC
},
3410 {"ACPI_LV_NAMES", ACPI_LV_NAMES
},
3411 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION
},
3412 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD
},
3413 {"ACPI_LV_TABLES", ACPI_LV_TABLES
},
3414 {"ACPI_LV_VALUES", ACPI_LV_VALUES
},
3415 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS
},
3416 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES
},
3417 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS
},
3418 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE
},
3419 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1
},
3421 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3422 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS
},
3423 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS
},
3424 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS
},
3425 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2
},
3426 {"ACPI_LV_ALL", ACPI_LV_ALL
},
3428 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3429 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX
},
3430 {"ACPI_LV_THREADS", ACPI_LV_THREADS
},
3431 {"ACPI_LV_IO", ACPI_LV_IO
},
3432 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS
},
3433 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3
},
3435 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3436 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE
},
3437 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO
},
3438 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES
},
3439 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS
},
3440 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE
},
3445 acpi_parse_debug(char *cp
, struct debugtag
*tag
, UINT32
*flag
)
3457 while (*ep
&& !isspace(*ep
))
3468 for (i
= 0; tag
[i
].name
!= NULL
; i
++) {
3469 if (!strncmp(cp
, tag
[i
].name
, l
)) {
3471 *flag
|= tag
[i
].value
;
3473 *flag
&= ~tag
[i
].value
;
3481 acpi_set_debugging(void *junk
)
3483 char *layer
, *level
;
3490 layer
= kgetenv("debug.acpi.layer");
3491 level
= kgetenv("debug.acpi.level");
3492 if (layer
== NULL
&& level
== NULL
)
3495 kprintf("ACPI set debug");
3496 if (layer
!= NULL
) {
3497 if (strcmp("NONE", layer
) != 0)
3498 kprintf(" layer '%s'", layer
);
3499 acpi_parse_debug(layer
, &dbg_layer
[0], &AcpiDbgLayer
);
3502 if (level
!= NULL
) {
3503 if (strcmp("NONE", level
) != 0)
3504 kprintf(" level '%s'", level
);
3505 acpi_parse_debug(level
, &dbg_level
[0], &AcpiDbgLevel
);
3511 SYSINIT(acpi_debugging
, SI_BOOT1_TUNABLES
, SI_ORDER_ANY
, acpi_set_debugging
,
3515 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS
)
3518 struct debugtag
*tag
;
3521 if (sbuf_new(&sb
, NULL
, 128, SBUF_AUTOEXTEND
) == NULL
)
3523 if (strcmp(oidp
->oid_arg1
, "debug.acpi.layer") == 0) {
3524 tag
= &dbg_layer
[0];
3525 dbg
= &AcpiDbgLayer
;
3527 tag
= &dbg_level
[0];
3528 dbg
= &AcpiDbgLevel
;
3531 /* Get old values if this is a get request. */
3532 ACPI_SERIAL_BEGIN(acpi
);
3534 sbuf_cpy(&sb
, "NONE");
3535 } else if (req
->newptr
== NULL
) {
3536 for (; tag
->name
!= NULL
; tag
++) {
3537 if ((*dbg
& tag
->value
) == tag
->value
)
3538 sbuf_printf(&sb
, "%s ", tag
->name
);
3544 /* Copy out the old values to the user. */
3545 error
= SYSCTL_OUT(req
, sbuf_data(&sb
), sbuf_len(&sb
));
3548 /* If the user is setting a string, parse it. */
3549 if (error
== 0 && req
->newptr
!= NULL
) {
3551 ksetenv((char *)oidp
->oid_arg1
, (char *)req
->newptr
);
3552 acpi_set_debugging(NULL
);
3554 ACPI_SERIAL_END(acpi
);
3559 SYSCTL_PROC(_debug_acpi
, OID_AUTO
, layer
, CTLFLAG_RW
| CTLTYPE_STRING
,
3560 "debug.acpi.layer", 0, acpi_debug_sysctl
, "A", "");
3561 SYSCTL_PROC(_debug_acpi
, OID_AUTO
, level
, CTLFLAG_RW
| CTLTYPE_STRING
,
3562 "debug.acpi.level", 0, acpi_debug_sysctl
, "A", "");
3563 #endif /* ACPI_DEBUG */
3566 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS
)
3571 old
= acpi_debug_objects
;
3572 error
= sysctl_handle_int(oidp
, &acpi_debug_objects
, 0, req
);
3573 if (error
!= 0 || req
->newptr
== NULL
)
3575 if (old
== acpi_debug_objects
|| (old
&& acpi_debug_objects
))
3578 ACPI_SERIAL_BEGIN(acpi
);
3579 AcpiGbl_EnableAmlDebugObject
= acpi_debug_objects
? TRUE
: FALSE
;
3580 ACPI_SERIAL_END(acpi
);
3587 acpi_parse_interfaces(char *str
, struct acpi_interface
*iface
)
3594 while (isspace(*p
) || *p
== ',')
3599 p
= kstrdup(p
, M_TEMP
);
3600 for (i
= 0; i
< len
; i
++)
3605 if (isspace(p
[i
]) || p
[i
] == '\0')
3608 i
+= strlen(p
+ i
) + 1;
3615 iface
->data
= kmalloc(sizeof(*iface
->data
) * j
, M_TEMP
, M_WAITOK
);
3619 if (isspace(p
[i
]) || p
[i
] == '\0')
3622 iface
->data
[j
] = p
+ i
;
3623 i
+= strlen(p
+ i
) + 1;
3631 acpi_free_interfaces(struct acpi_interface
*iface
)
3633 kfree(iface
->data
[0], M_TEMP
);
3634 kfree(iface
->data
, M_TEMP
);
3638 acpi_reset_interfaces(device_t dev
)
3640 struct acpi_interface list
;
3644 if (acpi_parse_interfaces(acpi_install_interface
, &list
) > 0) {
3645 for (i
= 0; i
< list
.num
; i
++) {
3646 status
= AcpiInstallInterface(list
.data
[i
]);
3647 if (ACPI_FAILURE(status
))
3649 "failed to install _OSI(\"%s\"): %s\n",
3650 list
.data
[i
], AcpiFormatException(status
));
3651 else if (bootverbose
)
3652 device_printf(dev
, "installed _OSI(\"%s\")\n",
3655 acpi_free_interfaces(&list
);
3657 if (acpi_parse_interfaces(acpi_remove_interface
, &list
) > 0) {
3658 for (i
= 0; i
< list
.num
; i
++) {
3659 status
= AcpiRemoveInterface(list
.data
[i
]);
3660 if (ACPI_FAILURE(status
))
3662 "failed to remove _OSI(\"%s\"): %s\n",
3663 list
.data
[i
], AcpiFormatException(status
));
3664 else if (bootverbose
)
3665 device_printf(dev
, "removed _OSI(\"%s\")\n",
3668 acpi_free_interfaces(&list
);
3673 acpi_pm_func(u_long cmd
, void *arg
, ...)
3675 int state
, acpi_state
;
3677 struct acpi_softc
*sc
;
3682 case POWER_CMD_SUSPEND
:
3683 sc
= (struct acpi_softc
*)arg
;
3689 __va_start(ap
, arg
);
3690 state
= __va_arg(ap
, int);
3694 case POWER_SLEEP_STATE_STANDBY
:
3695 acpi_state
= sc
->acpi_standby_sx
;
3697 case POWER_SLEEP_STATE_SUSPEND
:
3698 acpi_state
= sc
->acpi_suspend_sx
;
3700 case POWER_SLEEP_STATE_HIBERNATE
:
3701 acpi_state
= ACPI_STATE_S4
;
3708 if (ACPI_FAILURE(acpi_EnterSleepState(sc
, acpi_state
)))
3721 acpi_pm_register(void *arg
)
3723 if (!cold
|| resource_disabled("acpi", 0))
3726 power_pm_register(POWER_PM_TYPE_ACPI
, acpi_pm_func
, NULL
);
3729 SYSINIT(power
, SI_BOOT2_KLD
, SI_ORDER_ANY
, acpi_pm_register
, 0);