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 void acpi_disable_not_present(device_t child
);
144 static void acpi_reprobe_children(device_t bus
, device_t
*children
,
146 static ACPI_STATUS
acpi_probe_child(ACPI_HANDLE handle
, UINT32 level
,
147 void *context
, void **status
);
148 static ACPI_STATUS
acpi_EnterSleepState(struct acpi_softc
*sc
, int state
);
149 static void acpi_shutdown_final(void *arg
, int howto
);
150 static void acpi_enable_fixed_events(struct acpi_softc
*sc
);
151 static int acpi_wake_sleep_prep(ACPI_HANDLE handle
, int sstate
);
152 static int acpi_wake_run_prep(ACPI_HANDLE handle
, int sstate
);
153 static int acpi_wake_prep_walk(int sstate
);
154 static int acpi_wake_sysctl_walk(device_t dev
);
156 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS
);
158 static void acpi_system_eventhandler_sleep(void *arg
, int state
);
159 static void acpi_system_eventhandler_wakeup(void *arg
, int state
);
160 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
);
161 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
);
162 static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS
);
163 static int acpi_pm_func(u_long cmd
, void *arg
, ...);
164 static int acpi_child_location_str_method(device_t acdev
, device_t child
,
165 char *buf
, size_t buflen
);
166 static int acpi_child_pnpinfo_str_method(device_t acdev
, device_t child
,
167 char *buf
, size_t buflen
);
168 static void acpi_enable_pcie(void);
169 static void acpi_reset_interfaces(device_t dev
);
171 static device_method_t acpi_methods
[] = {
172 /* Device interface */
173 DEVMETHOD(device_identify
, acpi_identify
),
174 DEVMETHOD(device_probe
, acpi_probe
),
175 DEVMETHOD(device_attach
, acpi_attach
),
176 DEVMETHOD(device_shutdown
, acpi_shutdown
),
177 DEVMETHOD(device_detach
, bus_generic_detach
),
178 DEVMETHOD(device_suspend
, acpi_suspend
),
179 DEVMETHOD(device_resume
, acpi_resume
),
182 DEVMETHOD(bus_add_child
, acpi_add_child
),
183 DEVMETHOD(bus_print_child
, acpi_print_child
),
184 DEVMETHOD(bus_probe_nomatch
, acpi_probe_nomatch
),
185 DEVMETHOD(bus_driver_added
, acpi_driver_added
),
186 DEVMETHOD(bus_read_ivar
, acpi_read_ivar
),
187 DEVMETHOD(bus_write_ivar
, acpi_write_ivar
),
188 DEVMETHOD(bus_get_resource_list
, acpi_get_rlist
),
189 DEVMETHOD(bus_set_resource
, bus_generic_rl_set_resource
),
190 DEVMETHOD(bus_get_resource
, bus_generic_rl_get_resource
),
191 DEVMETHOD(bus_alloc_resource
, acpi_alloc_resource
),
192 DEVMETHOD(bus_release_resource
, acpi_release_resource
),
193 DEVMETHOD(bus_delete_resource
, acpi_delete_resource
),
194 DEVMETHOD(bus_child_pnpinfo_str
, acpi_child_pnpinfo_str_method
),
195 DEVMETHOD(bus_child_location_str
, acpi_child_location_str_method
),
196 DEVMETHOD(bus_activate_resource
, bus_generic_activate_resource
),
197 DEVMETHOD(bus_deactivate_resource
, bus_generic_deactivate_resource
),
198 DEVMETHOD(bus_setup_intr
, bus_generic_setup_intr
),
199 DEVMETHOD(bus_teardown_intr
, bus_generic_teardown_intr
),
202 DEVMETHOD(acpi_id_probe
, acpi_device_id_probe
),
203 DEVMETHOD(acpi_evaluate_object
, acpi_device_eval_obj
),
204 DEVMETHOD(acpi_pwr_for_sleep
, acpi_device_pwr_for_sleep
),
205 DEVMETHOD(acpi_scan_children
, acpi_device_scan_children
),
208 DEVMETHOD(pci_set_powerstate
, acpi_set_powerstate_method
),
211 DEVMETHOD(isa_pnp_probe
, acpi_isa_pnp_probe
),
216 static driver_t acpi_driver
= {
219 sizeof(struct acpi_softc
),
220 .gpri
= KOBJ_GPRI_ACPI
+2
223 static devclass_t acpi_devclass
;
224 DRIVER_MODULE(acpi
, nexus
, acpi_driver
, acpi_devclass
, acpi_modevent
, NULL
);
225 MODULE_VERSION(acpi
, 1);
227 ACPI_SERIAL_DECL(acpi
, "ACPI serializer");
229 /* Local pools for managing system resources for ACPI child devices. */
230 static struct rman acpi_rman_io
, acpi_rman_mem
;
232 #define ACPI_MINIMUM_AWAKETIME 5
234 static const char* sleep_state_names
[] = {
235 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
237 SYSCTL_NODE(_debug
, OID_AUTO
, acpi
, CTLFLAG_RD
, NULL
, "ACPI debugging");
238 static char acpi_ca_version
[12];
239 SYSCTL_STRING(_debug_acpi
, OID_AUTO
, acpi_ca_version
, CTLFLAG_RD
,
240 acpi_ca_version
, 0, "Version of Intel ACPICA");
243 * Allow overriding _OSI methods.
245 static char acpi_install_interface
[256];
246 TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface
,
247 sizeof(acpi_install_interface
));
248 static char acpi_remove_interface
[256];
249 TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface
,
250 sizeof(acpi_remove_interface
));
253 * Use this tunable to disable the control method auto-serialization
254 * mechanism that was added in 20140214 and superseded the previous
255 * AcpiGbl_SerializeAllMethods global.
257 static int acpi_auto_serialize_methods
= 1;
258 TUNABLE_INT("hw.acpi.auto_serialize_methods", &acpi_auto_serialize_methods
);
260 /* Allow users to dump Debug objects without ACPI debugger. */
261 static int acpi_debug_objects
;
262 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects
);
263 SYSCTL_PROC(_debug_acpi
, OID_AUTO
, enable_debug_objects
,
264 CTLFLAG_RW
| CTLTYPE_INT
, NULL
, 0, acpi_debug_objects_sysctl
, "I",
265 "Enable Debug objects.");
267 /* Allow ignoring the XSDT. */
268 static int acpi_ignore_xsdt
;
269 TUNABLE_INT("debug.acpi.ignore_xsdt", &acpi_ignore_xsdt
);
270 SYSCTL_INT(_debug_acpi
, OID_AUTO
, ignore_xsdt
, CTLFLAG_RD
,
271 &acpi_ignore_xsdt
, 1, "Ignore the XSDT, forcing the use of the RSDT.");
273 /* Allow the interpreter to ignore common mistakes in BIOS. */
274 static int acpi_interpreter_slack
= 1;
275 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack
);
276 SYSCTL_INT(_debug_acpi
, OID_AUTO
, interpreter_slack
, CTLFLAG_RD
,
277 &acpi_interpreter_slack
, 1, "Turn on interpreter slack mode.");
279 /* Allow preferring 32-bit FADT register addresses over the 64-bit ones. */
280 static int acpi_fadt_addr32
;
281 TUNABLE_INT("debug.acpi.fadt_addr32", &acpi_fadt_addr32
);
282 SYSCTL_INT(_debug_acpi
, OID_AUTO
, fadt_addr32
, CTLFLAG_RD
,
283 &acpi_fadt_addr32
, 1,
284 "Prefer 32-bit FADT register addresses over 64-bit ones.");
286 /* Prefer 32-bit FACS table addresses over the 64-bit ones. */
287 static int acpi_facs_addr32
= 1;
288 TUNABLE_INT("debug.acpi.facs_addr32", &acpi_facs_addr32
);
289 SYSCTL_INT(_debug_acpi
, OID_AUTO
, facs_addr32
, CTLFLAG_RD
,
290 &acpi_facs_addr32
, 1,
291 "Prefer 32-bit FACS table addresses over 64-bit ones.");
293 /* Power devices off and on in suspend and resume. XXX Remove once tested. */
294 static int acpi_do_powerstate
= 1;
295 TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate
);
296 SYSCTL_INT(_debug_acpi
, OID_AUTO
, do_powerstate
, CTLFLAG_RW
,
297 &acpi_do_powerstate
, 1, "Turn off devices when suspending.");
299 /* Allow users to override quirks. */
300 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks
);
302 /* Allow to call ACPI methods from userland. */
303 static int acpi_allow_mcall
;
304 TUNABLE_INT("debug.acpi.allow_method_calls", &acpi_allow_mcall
);
306 static int acpi_susp_bounce
;
307 SYSCTL_INT(_debug_acpi
, OID_AUTO
, suspend_bounce
, CTLFLAG_RW
,
308 &acpi_susp_bounce
, 0, "Don't actually suspend, just test devices.");
311 * ACPI can only be loaded as a module by the loader; activating it after
312 * system bootstrap time is not useful, and can be fatal to the system.
313 * It also cannot be unloaded, since the entire system bus heirarchy hangs
317 acpi_modevent(struct module
*mod
, int event
, void *junk
)
322 kprintf("The ACPI driver cannot be loaded after boot.\n");
327 if (!cold
&& power_pm_get_type() == POWER_PM_TYPE_ACPI
)
337 * Perform early initialization.
342 static int started
= 0;
346 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
348 /* Only run the startup code once. The MADT driver also calls this. */
350 return_VALUE (AE_OK
);
353 /* Start up the ACPICA subsystem. */
354 status
= AcpiInitializeSubsystem();
355 if (ACPI_FAILURE(status
)) {
356 kprintf("ACPI: Subsystem initialization failed: %s\n",
357 AcpiFormatException(status
));
358 return_VALUE (status
);
362 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
363 * if more tables exist.
365 if (ACPI_FAILURE(status
= AcpiInitializeTables(NULL
, 2, TRUE
))) {
366 kprintf("ACPI: Table initialization failed: %s\n",
367 AcpiFormatException(status
));
368 return_VALUE (status
);
371 /* Set up any quirks we have for this system. */
372 if (acpi_quirks
== ACPI_Q_OK
)
373 acpi_table_quirks(&acpi_quirks
);
375 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
376 if (resource_int_value("acpi", 0, "disabled", &val
) == 0 && val
== 0)
377 acpi_quirks
&= ~ACPI_Q_BROKEN
;
378 if (acpi_quirks
& ACPI_Q_BROKEN
) {
379 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
383 return_VALUE (status
);
387 * Detect ACPI, perform early initialisation
390 acpi_identify(driver_t
*driver
, device_t parent
)
394 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
399 /* Check that we haven't been disabled with a hint. */
400 if (resource_disabled("acpi", 0))
403 /* Make sure we're not being doubly invoked. */
404 if (device_find_child(parent
, "acpi", 0) != NULL
)
407 ksnprintf(acpi_ca_version
, sizeof(acpi_ca_version
), "%x", ACPI_CA_VERSION
);
409 /* Initialize root tables. */
410 if (ACPI_FAILURE(acpi_Startup())) {
411 kprintf("ACPI: Try disabling either ACPI or apic support.\n");
415 /* Attach the actual ACPI device. */
416 if ((child
= BUS_ADD_CHILD(parent
, parent
, 10, "acpi", 0)) == NULL
) {
417 device_printf(parent
, "device_identify failed\n");
423 * Fetch some descriptive data from ACPI to put in our attach message.
426 acpi_probe(device_t dev
)
428 ACPI_TABLE_RSDP
*rsdp
;
429 ACPI_TABLE_HEADER
*rsdt
;
430 ACPI_PHYSICAL_ADDRESS paddr
;
431 char buf
[ACPI_OEM_ID_SIZE
+ ACPI_OEM_TABLE_ID_SIZE
+ 2];
434 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
436 if (power_pm_get_type() != POWER_PM_TYPE_NONE
&&
437 power_pm_get_type() != POWER_PM_TYPE_ACPI
) {
438 device_printf(dev
, "probe failed, other PM system enabled.\n");
439 return_VALUE (ENXIO
);
442 if ((paddr
= AcpiOsGetRootPointer()) == 0 ||
443 (rsdp
= AcpiOsMapMemory(paddr
, sizeof(ACPI_TABLE_RSDP
))) == NULL
)
444 return_VALUE (ENXIO
);
445 if (acpi_ignore_xsdt
== 0 &&
446 rsdp
->Revision
> 1 && rsdp
->XsdtPhysicalAddress
!= 0)
447 paddr
= (ACPI_PHYSICAL_ADDRESS
)rsdp
->XsdtPhysicalAddress
;
449 paddr
= (ACPI_PHYSICAL_ADDRESS
)rsdp
->RsdtPhysicalAddress
;
450 AcpiOsUnmapMemory(rsdp
, sizeof(ACPI_TABLE_RSDP
));
452 if ((rsdt
= AcpiOsMapMemory(paddr
, sizeof(ACPI_TABLE_HEADER
))) == NULL
)
453 return_VALUE (ENXIO
);
454 sbuf_new(&sb
, buf
, sizeof(buf
), SBUF_FIXEDLEN
);
455 sbuf_bcat(&sb
, rsdt
->OemId
, ACPI_OEM_ID_SIZE
);
458 sbuf_bcat(&sb
, rsdt
->OemTableId
, ACPI_OEM_TABLE_ID_SIZE
);
461 device_set_desc_copy(dev
, sbuf_data(&sb
));
463 AcpiOsUnmapMemory(rsdt
, sizeof(ACPI_TABLE_HEADER
));
469 acpi_attach(device_t dev
)
471 struct acpi_softc
*sc
;
478 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
480 sc
= device_get_softc(dev
);
482 callout_init(&sc
->susp_force_to
);
484 if ((error
= acpi_task_thread_init())) {
485 device_printf(dev
, "Could not start task thread.\n");
491 /* Initialize resource manager. */
492 acpi_rman_io
.rm_type
= RMAN_ARRAY
;
493 acpi_rman_io
.rm_start
= 0;
494 acpi_rman_io
.rm_end
= 0xffff;
495 acpi_rman_io
.rm_descr
= "ACPI I/O ports";
496 if (rman_init(&acpi_rman_io
, -1) != 0)
497 panic("acpi rman_init IO ports failed");
498 acpi_rman_mem
.rm_type
= RMAN_ARRAY
;
499 acpi_rman_mem
.rm_start
= 0;
500 acpi_rman_mem
.rm_end
= ~0ul;
501 acpi_rman_mem
.rm_descr
= "ACPI I/O memory addresses";
502 if (rman_init(&acpi_rman_mem
, -1) != 0)
503 panic("acpi rman_init memory failed");
505 /* Initialise the ACPI mutex */
506 ACPI_LOCK_INIT(acpi
, "acpi");
507 ACPI_SERIAL_INIT(acpi
);
512 * Set the globals from our tunables. This is needed because ACPICA
513 * uses UINT8 for some values and we have no tunable_byte.
515 AcpiGbl_AutoSerializeMethods
= acpi_auto_serialize_methods
? TRUE
: FALSE
;
516 AcpiGbl_DoNotUseXsdt
= acpi_ignore_xsdt
? TRUE
: FALSE
;
517 AcpiGbl_EnableAmlDebugObject
= acpi_debug_objects
? TRUE
: FALSE
;
518 AcpiGbl_EnableInterpreterSlack
= acpi_interpreter_slack
? TRUE
: FALSE
;
519 AcpiGbl_Use32BitFadtAddresses
= acpi_fadt_addr32
? TRUE
: FALSE
;
520 AcpiGbl_Use32BitFacsAddresses
= acpi_facs_addr32
? TRUE
: FALSE
;
524 * Disable Debug Object output.
526 AcpiDbgLevel
&= ~ACPI_LV_DEBUG_OBJECT
;
529 /* Override OS interfaces if the user requested. */
530 acpi_reset_interfaces(dev
);
532 /* Load ACPI name space. */
533 status
= AcpiLoadTables();
534 if (ACPI_FAILURE(status
)) {
535 device_printf(dev
, "Could not load Namespace: %s\n",
536 AcpiFormatException(status
));
540 /* Handle MCFG table if present. */
544 * Note that some systems (specifically, those with namespace evaluation
545 * issues that require the avoidance of parts of the namespace) must
546 * avoid running _INI and _STA on everything, as well as dodging the final
549 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
551 * XXX We should arrange for the object init pass after we have attached
552 * all our child devices, but on many systems it works here.
554 flags
= ACPI_FULL_INITIALIZATION
;
555 if (ktestenv("debug.acpi.avoid"))
556 flags
= ACPI_NO_DEVICE_INIT
| ACPI_NO_OBJECT_INIT
;
558 /* Bring the hardware and basic handlers online. */
559 if (ACPI_FAILURE(status
= AcpiEnableSubsystem(flags
))) {
560 device_printf(dev
, "Could not enable ACPI: %s\n",
561 AcpiFormatException(status
));
566 * Fix up the interrupt timer after enabling ACPI, so that the
567 * interrupt cputimer that choked by ACPI power management could
568 * be resurrected before probing various devices.
571 cputimer_intr_pmfixup();
574 * Call the ECDT probe function to provide EC functionality before
575 * the namespace has been evaluated.
577 * XXX This happens before the sysresource devices have been probed and
578 * attached so its resources come from nexus0. In practice, this isn't
579 * a problem but should be addressed eventually.
581 acpi_ec_ecdt_probe(dev
);
583 /* Bring device objects and regions online. */
584 if (ACPI_FAILURE(status
= AcpiInitializeObjects(flags
))) {
585 device_printf(dev
, "Could not initialize ACPI objects: %s\n",
586 AcpiFormatException(status
));
591 * Setup our sysctl tree.
593 * XXX: This doesn't check to make sure that none of these fail.
595 sysctl_ctx_init(&sc
->acpi_sysctl_ctx
);
596 sc
->acpi_sysctl_tree
= SYSCTL_ADD_NODE(&sc
->acpi_sysctl_ctx
,
597 SYSCTL_STATIC_CHILDREN(_hw
), OID_AUTO
,
598 device_get_name(dev
), CTLFLAG_RD
, 0, "");
599 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
600 OID_AUTO
, "supported_sleep_state", CTLTYPE_STRING
| CTLFLAG_RD
,
601 0, 0, acpi_supported_sleep_state_sysctl
, "A", "");
602 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
603 OID_AUTO
, "power_button_state", CTLTYPE_STRING
| CTLFLAG_RW
,
604 &sc
->acpi_power_button_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
605 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
606 OID_AUTO
, "sleep_button_state", CTLTYPE_STRING
| CTLFLAG_RW
,
607 &sc
->acpi_sleep_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
, "lid_switch_state", CTLTYPE_STRING
| CTLFLAG_RW
,
610 &sc
->acpi_lid_switch_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
611 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
612 OID_AUTO
, "standby_state", CTLTYPE_STRING
| CTLFLAG_RW
,
613 &sc
->acpi_standby_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
614 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
615 OID_AUTO
, "suspend_state", CTLTYPE_STRING
| CTLFLAG_RW
,
616 &sc
->acpi_suspend_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
617 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
618 OID_AUTO
, "sleep_delay", CTLFLAG_RW
, &sc
->acpi_sleep_delay
, 0,
620 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
621 OID_AUTO
, "s4bios", CTLFLAG_RW
, &sc
->acpi_s4bios
, 0, "S4BIOS mode");
622 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
623 OID_AUTO
, "verbose", CTLFLAG_RW
, &sc
->acpi_verbose
, 0, "verbose mode");
624 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
625 OID_AUTO
, "disable_on_reboot", CTLFLAG_RW
,
626 &sc
->acpi_do_disable
, 0, "Disable ACPI when rebooting/halting system");
627 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
628 OID_AUTO
, "handle_reboot", CTLFLAG_RW
,
629 &sc
->acpi_handle_reboot
, 0, "Use ACPI Reset Register to reboot");
632 * Default to 1 second before sleeping to give some machines time to
635 sc
->acpi_sleep_delay
= 1;
637 sc
->acpi_verbose
= 1;
638 if ((env
= kgetenv("hw.acpi.verbose")) != NULL
) {
639 if (strcmp(env
, "0") != 0)
640 sc
->acpi_verbose
= 1;
644 /* Only enable reboot by default if the FADT says it is available. */
645 if (AcpiGbl_FADT
.Flags
& ACPI_FADT_RESET_REGISTER
)
646 sc
->acpi_handle_reboot
= 1;
648 /* Only enable S4BIOS by default if the FACS says it is available. */
649 if (AcpiGbl_FACS
->Flags
& ACPI_FACS_S4_BIOS_PRESENT
)
653 * Dispatch the default sleep state to devices. The lid switch is set
654 * to NONE by default to avoid surprising users.
656 sc
->acpi_power_button_sx
= ACPI_STATE_S5
;
657 sc
->acpi_lid_switch_sx
= ACPI_S_STATES_MAX
+ 1;
658 sc
->acpi_standby_sx
= ACPI_STATE_S1
;
659 sc
->acpi_suspend_sx
= ACPI_STATE_S3
;
661 /* Pick the first valid sleep state for the sleep button default. */
662 sc
->acpi_sleep_button_sx
= ACPI_S_STATES_MAX
+ 1;
663 for (state
= ACPI_STATE_S1
; state
<= ACPI_STATE_S4
; state
++)
664 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state
, &TypeA
, &TypeB
))) {
665 sc
->acpi_sleep_button_sx
= state
;
669 acpi_enable_fixed_events(sc
);
672 * Scan the namespace and attach/initialise children.
675 /* Register our shutdown handler. */
676 EVENTHANDLER_REGISTER(shutdown_final
, acpi_shutdown_final
, sc
,
680 * Register our acpi event handlers.
681 * XXX should be configurable eg. via userland policy manager.
683 EVENTHANDLER_REGISTER(acpi_sleep_event
, acpi_system_eventhandler_sleep
,
684 sc
, ACPI_EVENT_PRI_LAST
);
685 EVENTHANDLER_REGISTER(acpi_wakeup_event
, acpi_system_eventhandler_wakeup
,
686 sc
, ACPI_EVENT_PRI_LAST
);
688 /* Flag our initial states. */
689 sc
->acpi_enabled
= 1;
690 sc
->acpi_sstate
= ACPI_STATE_S0
;
691 sc
->acpi_sleep_disabled
= 0;
692 /* Create the control device */
693 sc
->acpi_dev_t
= make_dev(&acpi_ops
, 0, UID_ROOT
, GID_WHEEL
, 0644, "acpi");
694 sc
->acpi_dev_t
->si_drv1
= sc
;
696 if ((error
= acpi_machdep_init(dev
)))
699 /* Register ACPI again to pass the correct argument of pm_func. */
700 power_pm_register(POWER_PM_TYPE_ACPI
, acpi_pm_func
, sc
);
702 if (!acpi_disabled("bus"))
703 acpi_probe_children(dev
);
705 /* Update all GPEs and enable runtime GPEs. */
706 status
= AcpiUpdateAllGpes();
707 if (ACPI_FAILURE(status
)) {
708 device_printf(dev
, "Could not update all GPEs: %s\n",
709 AcpiFormatException(status
));
712 /* Allow sleep request after a while. */
713 /* timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME); */
720 cputimer_intr_pmfixup();
721 acpi_task_thread_schedule();
723 return_VALUE (error
);
727 acpi_suspend(device_t dev
)
729 device_t child
, *devlist
;
730 int error
, i
, numdevs
, pstate
;
732 /* First give child devices a chance to suspend. */
733 error
= bus_generic_suspend(dev
);
738 * Now, set them into the appropriate power state, usually D3. If the
739 * device has an _SxD method for the next sleep state, use that power
742 device_get_children(dev
, &devlist
, &numdevs
);
743 for (i
= 0; i
< numdevs
; i
++) {
744 /* If the device is not attached, we've powered it down elsewhere. */
746 if (!device_is_attached(child
))
750 * Default to D3 for all sleep states. The _SxD method is optional
751 * so set the powerstate even if it's absent.
753 pstate
= PCI_POWERSTATE_D3
;
754 error
= acpi_device_pwr_for_sleep(device_get_parent(child
),
756 if ((error
== 0 || error
== ESRCH
) && acpi_do_powerstate
)
757 pci_set_powerstate(child
, pstate
);
759 kfree(devlist
, M_TEMP
);
766 acpi_resume(device_t dev
)
770 device_t child
, *devlist
;
773 * Put all devices in D0 before resuming them. Call _S0D on each one
774 * since some systems expect this.
776 device_get_children(dev
, &devlist
, &numdevs
);
777 for (i
= 0; i
< numdevs
; i
++) {
779 handle
= acpi_get_handle(child
);
781 AcpiEvaluateObject(handle
, "_S0D", NULL
, NULL
);
782 if (device_is_attached(child
) && acpi_do_powerstate
)
783 pci_set_powerstate(child
, PCI_POWERSTATE_D0
);
785 kfree(devlist
, M_TEMP
);
787 return (bus_generic_resume(dev
));
791 acpi_shutdown(device_t dev
)
793 /* Allow children to shutdown first. */
794 bus_generic_shutdown(dev
);
797 * Enable any GPEs that are able to power-on the system (i.e., RTC).
798 * Also, disable any that are not valid for this state (most).
800 acpi_wake_prep_walk(ACPI_STATE_S5
);
806 * Handle a new device being added
809 acpi_add_child(device_t bus
, device_t parent
, int order
, const char *name
, int unit
)
811 struct acpi_device
*ad
;
814 if ((ad
= kmalloc(sizeof(*ad
), M_ACPIDEV
, M_NOWAIT
| M_ZERO
)) == NULL
)
817 resource_list_init(&ad
->ad_rl
);
818 child
= device_add_child_ordered(parent
, order
, name
, unit
);
820 device_set_ivars(child
, ad
);
822 kfree(ad
, M_ACPIDEV
);
827 acpi_print_child(device_t bus
, device_t child
)
829 struct acpi_device
*adev
= device_get_ivars(child
);
830 struct resource_list
*rl
= &adev
->ad_rl
;
833 retval
+= bus_print_child_header(bus
, child
);
834 retval
+= resource_list_print_type(rl
, "port", SYS_RES_IOPORT
, "%#lx");
835 retval
+= resource_list_print_type(rl
, "iomem", SYS_RES_MEMORY
, "%#lx");
836 retval
+= resource_list_print_type(rl
, "irq", SYS_RES_IRQ
, "%ld");
837 retval
+= resource_list_print_type(rl
, "drq", SYS_RES_DRQ
, "%ld");
838 if (device_get_flags(child
))
839 retval
+= kprintf(" flags %#x", device_get_flags(child
));
840 retval
+= bus_print_child_footer(bus
, child
);
846 * If this device is an ACPI child but no one claimed it, attempt
847 * to power it off. We'll power it back up when a driver is added.
849 * XXX Disabled for now since many necessary devices (like fdc and
850 * ATA) don't claim the devices we created for them but still expect
851 * them to be powered up.
854 acpi_probe_nomatch(device_t bus
, device_t child
)
857 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
861 * If a new driver has a chance to probe a child, first power it up.
863 * XXX Disabled for now (see acpi_probe_nomatch for details).
866 acpi_driver_added(device_t dev
, driver_t
*driver
)
868 device_t child
, *devlist
;
871 DEVICE_IDENTIFY(driver
, dev
);
872 device_get_children(dev
, &devlist
, &numdevs
);
873 for (i
= 0; i
< numdevs
; i
++) {
875 if (device_get_state(child
) == DS_NOTPRESENT
) {
876 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
877 if (device_probe_and_attach(child
) != 0) {
878 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
882 kfree(devlist
, M_TEMP
);
885 /* Location hint for devctl(8) */
887 acpi_child_location_str_method(device_t cbdev
, device_t child
, char *buf
,
890 struct acpi_device
*dinfo
= device_get_ivars(child
);
892 if (dinfo
->ad_handle
)
893 ksnprintf(buf
, buflen
, "handle=%s", acpi_name(dinfo
->ad_handle
));
895 ksnprintf(buf
, buflen
, "unknown");
899 /* PnP information for devctl(8) */
901 acpi_child_pnpinfo_str_method(device_t cbdev
, device_t child
, char *buf
,
904 ACPI_DEVICE_INFO
*adinfo
;
905 struct acpi_device
*dinfo
= device_get_ivars(child
);
907 if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo
->ad_handle
, &adinfo
))) {
908 ksnprintf(buf
, buflen
, "unknown");
910 ksnprintf(buf
, buflen
, "_HID=%s _UID=%s",
911 (adinfo
->Valid
& ACPI_VALID_HID
) ?
912 adinfo
->HardwareId
.String
: "none",
913 (adinfo
->Valid
& ACPI_VALID_UID
) ?
914 adinfo
->UniqueId
.String
: "0");
922 * Handle per-device ivars
925 acpi_read_ivar(device_t dev
, device_t child
, int index
, uintptr_t *result
)
927 struct acpi_device
*ad
;
929 if ((ad
= device_get_ivars(child
)) == NULL
) {
930 device_printf(child
, "device has no ivars\n");
934 /* ACPI and ISA compatibility ivars */
936 case ACPI_IVAR_HANDLE
:
937 *(ACPI_HANDLE
*)result
= ad
->ad_handle
;
939 case ACPI_IVAR_MAGIC
:
940 *result
= ad
->ad_magic
;
942 case ACPI_IVAR_PRIVATE
:
943 *(void **)result
= ad
->ad_private
;
945 case ACPI_IVAR_FLAGS
:
946 *(int *)result
= ad
->ad_flags
;
948 case ACPI_IVAR_RECHECK
:
949 *(int *)result
= ad
->ad_recheck
;
951 case ISA_IVAR_VENDORID
:
952 case ISA_IVAR_SERIAL
:
953 case ISA_IVAR_COMPATID
:
956 case ISA_IVAR_LOGICALID
:
957 *(int *)result
= acpi_isa_get_logicalid(child
);
967 acpi_write_ivar(device_t dev
, device_t child
, int index
, uintptr_t value
)
969 struct acpi_device
*ad
;
971 if ((ad
= device_get_ivars(child
)) == NULL
) {
972 device_printf(child
, "device has no ivars\n");
977 case ACPI_IVAR_HANDLE
:
978 ad
->ad_handle
= (ACPI_HANDLE
)value
;
980 case ACPI_IVAR_MAGIC
:
981 ad
->ad_magic
= value
;
983 case ACPI_IVAR_PRIVATE
:
984 ad
->ad_private
= (void *)value
;
986 case ACPI_IVAR_FLAGS
:
987 ad
->ad_flags
= (int)value
;
989 case ACPI_IVAR_RECHECK
:
990 ad
->ad_recheck
= (int)value
;
993 panic("bad ivar write request (%d)", index
);
1001 * Handle child resource allocation/removal
1003 static struct resource_list
*
1004 acpi_get_rlist(device_t dev
, device_t child
)
1006 struct acpi_device
*ad
;
1008 ad
= device_get_ivars(child
);
1009 return (&ad
->ad_rl
);
1013 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
1014 * duplicates, we merge any in the sysresource attach routine.
1017 acpi_sysres_alloc(device_t dev
)
1019 struct resource
*res
;
1020 struct resource_list
*rl
;
1021 struct resource_list_entry
*rle
;
1023 char *sysres_ids
[] = { "PNP0C01", "PNP0C02", NULL
};
1027 * Probe/attach any sysresource devices. This would be unnecessary if we
1028 * had multi-pass probe/attach.
1030 if (device_get_children(dev
, &children
, &child_count
) != 0)
1032 for (i
= 0; i
< child_count
; i
++) {
1033 if (ACPI_ID_PROBE(dev
, children
[i
], sysres_ids
) != NULL
)
1034 device_probe_and_attach(children
[i
]);
1036 kfree(children
, M_TEMP
);
1038 rl
= BUS_GET_RESOURCE_LIST(device_get_parent(dev
), dev
);
1041 SLIST_FOREACH(rle
, rl
, link
) {
1042 if (rle
->res
!= NULL
) {
1043 device_printf(dev
, "duplicate resource for %lx\n", rle
->start
);
1047 /* Only memory and IO resources are valid here. */
1048 switch (rle
->type
) {
1049 case SYS_RES_IOPORT
:
1052 case SYS_RES_MEMORY
:
1053 rm
= &acpi_rman_mem
;
1059 /* Pre-allocate resource and add to our rman pool. */
1060 res
= BUS_ALLOC_RESOURCE(device_get_parent(dev
), dev
, rle
->type
,
1061 &rle
->rid
, rle
->start
, rle
->start
+ rle
->count
- 1, rle
->count
,
1064 rman_manage_region(rm
, rman_get_start(res
), rman_get_end(res
));
1067 device_printf(dev
, "reservation of %lx, %lx (%d) failed\n",
1068 rle
->start
, rle
->count
, rle
->type
);
1073 static struct resource
*
1074 acpi_alloc_resource(device_t bus
, device_t child
, int type
, int *rid
,
1075 u_long start
, u_long end
, u_long count
, u_int flags
, int cpuid
)
1078 struct acpi_device
*ad
= device_get_ivars(child
);
1079 struct resource_list
*rl
= &ad
->ad_rl
;
1080 struct resource_list_entry
*rle
;
1081 struct resource
*res
;
1086 /* We only handle memory and IO resources through rman. */
1088 case SYS_RES_IOPORT
:
1091 case SYS_RES_MEMORY
:
1092 rm
= &acpi_rman_mem
;
1098 ACPI_SERIAL_BEGIN(acpi
);
1101 * If this is an allocation of the "default" range for a given RID, and
1102 * we know what the resources for this device are (i.e., they're on the
1103 * child's resource list), use those start/end values.
1105 if (bus
== device_get_parent(child
) && start
== 0UL && end
== ~0UL) {
1106 rle
= resource_list_find(rl
, type
, *rid
);
1116 * If this is an allocation of a specific range, see if we can satisfy
1117 * the request from our system resource regions. If we can't, pass the
1118 * request up to the parent.
1120 if (start
+ count
- 1 == end
&& rm
!= NULL
)
1121 res
= rman_reserve_resource(rm
, start
, end
, count
, flags
& ~RF_ACTIVE
,
1124 res
= BUS_ALLOC_RESOURCE(device_get_parent(bus
), child
, type
, rid
,
1125 start
, end
, count
, flags
, cpuid
);
1127 rman_set_rid(res
, *rid
);
1129 /* If requested, activate the resource using the parent's method. */
1130 if (flags
& RF_ACTIVE
)
1131 if (bus_activate_resource(child
, type
, *rid
, res
) != 0) {
1132 rman_release_resource(res
);
1138 if (res
!= NULL
&& device_get_parent(child
) == bus
)
1142 * Since bus_config_intr() takes immediate effect, we cannot
1143 * configure the interrupt associated with a device when we
1144 * parse the resources but have to defer it until a driver
1145 * actually allocates the interrupt via bus_alloc_resource().
1147 * NB: Lookup failure is fine, since the device may add its
1148 * own interrupt resources, e.g. MSI or MSI-X.
1151 acpi_lookup_irq_resource(child
, *rid
, res
, &ares
))) {
1152 acpi_config_intr(child
, &ares
);
1154 kprintf("irq resource not found\n");
1160 ACPI_SERIAL_END(acpi
);
1165 acpi_release_resource(device_t bus
, device_t child
, int type
, int rid
,
1171 /* We only handle memory and IO resources through rman. */
1173 case SYS_RES_IOPORT
:
1176 case SYS_RES_MEMORY
:
1177 rm
= &acpi_rman_mem
;
1183 ACPI_SERIAL_BEGIN(acpi
);
1186 * If this resource belongs to one of our internal managers,
1187 * deactivate it and release it to the local pool. If it doesn't,
1188 * pass this request up to the parent.
1190 if (rm
!= NULL
&& rman_is_region_manager(r
, rm
)) {
1191 if (rman_get_flags(r
) & RF_ACTIVE
) {
1192 ret
= bus_deactivate_resource(child
, type
, rid
, r
);
1196 ret
= rman_release_resource(r
);
1198 ret
= BUS_RELEASE_RESOURCE(device_get_parent(bus
), child
, type
, rid
, r
);
1201 ACPI_SERIAL_END(acpi
);
1206 acpi_delete_resource(device_t bus
, device_t child
, int type
, int rid
)
1208 struct resource_list
*rl
;
1210 rl
= acpi_get_rlist(bus
, child
);
1211 resource_list_delete(rl
, type
, rid
);
1214 /* Allocate an IO port or memory resource, given its GAS. */
1216 acpi_bus_alloc_gas(device_t dev
, int *type
, int *rid
, ACPI_GENERIC_ADDRESS
*gas
,
1217 struct resource
**res
, u_int flags
)
1219 int error
, res_type
;
1222 if (type
== NULL
|| rid
== NULL
|| gas
== NULL
|| res
== NULL
)
1225 /* We only support memory and IO spaces. */
1226 switch (gas
->SpaceId
) {
1227 case ACPI_ADR_SPACE_SYSTEM_MEMORY
:
1228 res_type
= SYS_RES_MEMORY
;
1230 case ACPI_ADR_SPACE_SYSTEM_IO
:
1231 res_type
= SYS_RES_IOPORT
;
1234 return (EOPNOTSUPP
);
1238 * If the register width is less than 8, assume the BIOS author means
1239 * it is a bit field and just allocate a byte.
1241 if (gas
->BitWidth
&& gas
->BitWidth
< 8)
1244 /* Validate the address after we're sure we support the space. */
1245 if (gas
->Address
== 0 || gas
->BitWidth
== 0)
1248 bus_set_resource(dev
, res_type
, *rid
, gas
->Address
,
1249 gas
->BitWidth
/ 8, -1);
1250 *res
= bus_alloc_resource_any(dev
, res_type
, rid
, RF_ACTIVE
| flags
);
1255 bus_delete_resource(dev
, res_type
, *rid
);
1261 acpi_eval_osc(device_t dev
, ACPI_HANDLE handle
, const char *uuidstr
,
1262 int revision
, uint32_t *buf
, int count
)
1264 ACPI_BUFFER retbuf
= { ACPI_ALLOCATE_BUFFER
, NULL
};
1265 ACPI_OBJECT_LIST arglist
;
1267 ACPI_OBJECT
*retobj
;
1271 uint8_t oscuuid
[ACPI_UUID_LENGTH
];
1274 if (parse_uuid(uuidstr
, &uuid
) != 0)
1276 le_uuid_enc(oscuuid
, &uuid
);
1278 arglist
.Pointer
= arg
;
1280 arg
[0].Type
= ACPI_TYPE_BUFFER
;
1281 arg
[0].Buffer
.Length
= ACPI_UUID_LENGTH
;
1282 arg
[0].Buffer
.Pointer
= oscuuid
; /* UUID */
1283 arg
[1].Type
= ACPI_TYPE_INTEGER
;
1284 arg
[1].Integer
.Value
= revision
; /* revision */
1285 arg
[2].Type
= ACPI_TYPE_INTEGER
;
1286 arg
[2].Integer
.Value
= count
; /* # of cap integers */
1287 arg
[3].Type
= ACPI_TYPE_BUFFER
;
1288 arg
[3].Buffer
.Length
= count
* sizeof(uint32_t); /* capabilities buffer */
1289 arg
[3].Buffer
.Pointer
= (uint8_t *)buf
;
1291 status
= AcpiEvaluateObject(handle
, "_OSC", &arglist
, &retbuf
);
1292 if (ACPI_FAILURE(status
))
1294 retobj
= retbuf
.Pointer
;
1295 error
= ((uint32_t *)retobj
->Buffer
.Pointer
)[0] & ACPI_OSC_ERRMASK
;
1299 if (error
& ACPI_OSCERR_FAILURE
)
1300 device_printf(dev
, "_OSC unable to process request\n");
1301 if (error
& ACPI_OSCERR_BADUUID
)
1302 device_printf(dev
, "_OSC unrecognized UUID (%s)\n", uuidstr
);
1303 if (error
& ACPI_OSCERR_BADREV
)
1304 device_printf(dev
, "_OSC unrecognized revision ID (%d)\n", revision
);
1305 if (error
& ACPI_OSCERR_CAPSMASKED
) {
1306 if ((buf
[0] & ACPI_OSC_QUERY_SUPPORT
) == 0) {
1307 for (i
= 1; i
< count
; i
++) {
1309 "_OSC capabilities have been masked: buf[%d]:%#x\n",
1310 i
, buf
[i
] & ~((uint32_t *)retobj
->Buffer
.Pointer
)[i
]);
1312 status
= AE_SUPPORT
;
1317 if (buf
[0] & ACPI_OSC_QUERY_SUPPORT
) {
1318 for (i
= 0; i
< count
; i
++)
1319 buf
[i
] = ((uint32_t *)retobj
->Buffer
.Pointer
)[i
];
1323 if (retbuf
.Pointer
!= NULL
)
1324 AcpiOsFree(retbuf
.Pointer
);
1328 /* Probe _HID and _CID for compatible ISA PNP ids. */
1330 acpi_isa_get_logicalid(device_t dev
)
1332 ACPI_DEVICE_INFO
*devinfo
;
1336 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1341 /* Fetch and validate the HID. */
1342 if ((h
= acpi_get_handle(dev
)) == NULL
||
1343 ACPI_FAILURE(AcpiGetObjectInfo(h
, &devinfo
)))
1346 if ((devinfo
->Valid
& ACPI_VALID_HID
) != 0)
1347 pnpid
= PNP_EISAID(devinfo
->HardwareId
.String
);
1351 AcpiOsFree(devinfo
);
1352 return_VALUE (pnpid
);
1356 acpi_isa_get_compatid(device_t dev
, uint32_t *cids
, int count
)
1358 ACPI_DEVICE_INFO
*devinfo
;
1363 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1369 /* Fetch and validate the CID */
1370 if ((h
= acpi_get_handle(dev
)) == NULL
||
1371 ACPI_FAILURE(AcpiGetObjectInfo(h
, &devinfo
)) ||
1372 (devinfo
->Valid
& ACPI_VALID_CID
) == 0)
1375 if (devinfo
->CompatibleIdList
.Count
< count
)
1376 count
= devinfo
->CompatibleIdList
.Count
;
1377 for (i
= 0; i
< count
; i
++) {
1378 if (strncmp(devinfo
->CompatibleIdList
.Ids
[i
].String
, "PNP", 3) != 0)
1380 *pnpid
++ = PNP_EISAID(devinfo
->CompatibleIdList
.Ids
[i
].String
);
1386 AcpiOsFree(devinfo
);
1387 return_VALUE (valid
);
1391 acpi_device_id_probe(device_t bus
, device_t dev
, char **ids
)
1396 h
= acpi_get_handle(dev
);
1397 if (ids
== NULL
|| h
== NULL
|| acpi_get_type(dev
) != ACPI_TYPE_DEVICE
)
1400 /* Try to match one of the array of IDs with a HID or CID. */
1401 for (i
= 0; ids
[i
] != NULL
; i
++) {
1402 if (acpi_MatchHid(h
, ids
[i
]))
1409 acpi_device_eval_obj(device_t bus
, device_t dev
, ACPI_STRING pathname
,
1410 ACPI_OBJECT_LIST
*parameters
, ACPI_BUFFER
*ret
)
1415 h
= ACPI_ROOT_OBJECT
;
1416 else if ((h
= acpi_get_handle(dev
)) == NULL
)
1417 return (AE_BAD_PARAMETER
);
1418 return (AcpiEvaluateObject(h
, pathname
, parameters
, ret
));
1422 acpi_device_pwr_for_sleep(device_t bus
, device_t dev
, int *dstate
)
1424 struct acpi_softc
*sc
;
1430 sc
= device_get_softc(bus
);
1431 handle
= acpi_get_handle(dev
);
1434 * XXX If we find these devices, don't try to power them down.
1435 * The serial and IRDA ports on my T23 hang the system when
1436 * set to D3 and it appears that such legacy devices may
1437 * need special handling in their drivers.
1439 if (handle
== NULL
||
1440 acpi_MatchHid(handle
, "PNP0500") ||
1441 acpi_MatchHid(handle
, "PNP0501") ||
1442 acpi_MatchHid(handle
, "PNP0502") ||
1443 acpi_MatchHid(handle
, "PNP0510") ||
1444 acpi_MatchHid(handle
, "PNP0511"))
1448 * Override next state with the value from _SxD, if present. If no
1449 * dstate argument was provided, don't fetch the return value.
1451 ksnprintf(sxd
, sizeof(sxd
), "_S%dD", sc
->acpi_sstate
);
1453 status
= acpi_GetInteger(handle
, sxd
, dstate
);
1455 status
= AcpiEvaluateObject(handle
, sxd
, NULL
, NULL
);
1472 /* Callback arg for our implementation of walking the namespace. */
1473 struct acpi_device_scan_ctx
{
1474 acpi_scan_cb_t user_fn
;
1480 acpi_device_scan_cb(ACPI_HANDLE h
, UINT32 level
, void *arg
, void **retval
)
1482 struct acpi_device_scan_ctx
*ctx
;
1483 device_t dev
, old_dev
;
1485 ACPI_OBJECT_TYPE type
;
1488 * Skip this device if we think we'll have trouble with it or it is
1489 * the parent where the scan began.
1491 ctx
= (struct acpi_device_scan_ctx
*)arg
;
1492 if (acpi_avoid(h
) || h
== ctx
->parent
)
1495 /* If this is not a valid device type (e.g., a method), skip it. */
1496 if (ACPI_FAILURE(AcpiGetType(h
, &type
)))
1498 if (type
!= ACPI_TYPE_DEVICE
&& type
!= ACPI_TYPE_PROCESSOR
&&
1499 type
!= ACPI_TYPE_THERMAL
&& type
!= ACPI_TYPE_POWER
)
1503 * Call the user function with the current device. If it is unchanged
1504 * afterwards, return. Otherwise, we update the handle to the new dev.
1506 old_dev
= acpi_get_device(h
);
1508 status
= ctx
->user_fn(h
, &dev
, level
, ctx
->arg
);
1509 if (ACPI_FAILURE(status
) || old_dev
== dev
)
1512 /* Remove the old child and its connection to the handle. */
1513 if (old_dev
!= NULL
) {
1514 device_delete_child(device_get_parent(old_dev
), old_dev
);
1515 AcpiDetachData(h
, acpi_fake_objhandler
);
1518 /* Recreate the handle association if the user created a device. */
1520 AcpiAttachData(h
, acpi_fake_objhandler
, dev
);
1526 acpi_device_scan_children(device_t bus
, device_t dev
, int max_depth
,
1527 acpi_scan_cb_t user_fn
, void *arg
)
1530 struct acpi_device_scan_ctx ctx
;
1532 if (acpi_disabled("children"))
1536 h
= ACPI_ROOT_OBJECT
;
1537 else if ((h
= acpi_get_handle(dev
)) == NULL
)
1538 return (AE_BAD_PARAMETER
);
1539 ctx
.user_fn
= user_fn
;
1542 return (AcpiWalkNamespace(ACPI_TYPE_ANY
, h
, max_depth
,
1543 acpi_device_scan_cb
, NULL
, &ctx
, NULL
));
1547 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1548 * device power states since it's close enough to ACPI.
1551 acpi_set_powerstate_method(device_t bus
, device_t child
, int state
)
1558 h
= acpi_get_handle(child
);
1559 if (state
< ACPI_STATE_D0
|| state
> ACPI_STATE_D3
)
1564 /* Ignore errors if the power methods aren't present. */
1565 status
= acpi_pwr_switch_consumer(h
, state
);
1566 if (ACPI_FAILURE(status
) && status
!= AE_NOT_FOUND
1567 && status
!= AE_BAD_PARAMETER
)
1568 device_printf(bus
, "failed to set ACPI power state D%d on %s: %s\n",
1569 state
, acpi_name(h
), AcpiFormatException(status
));
1575 acpi_isa_pnp_probe(device_t bus
, device_t child
, struct isa_pnp_id
*ids
)
1577 int result
, cid_count
, i
;
1578 uint32_t lid
, cids
[8];
1580 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1583 * ISA-style drivers attached to ACPI may persist and
1584 * probe manually if we return ENOENT. We never want
1585 * that to happen, so don't ever return it.
1589 /* Scan the supplied IDs for a match */
1590 lid
= acpi_isa_get_logicalid(child
);
1591 cid_count
= acpi_isa_get_compatid(child
, cids
, 8);
1592 while (ids
&& ids
->ip_id
) {
1593 if (lid
== ids
->ip_id
) {
1597 for (i
= 0; i
< cid_count
; i
++) {
1598 if (cids
[i
] == ids
->ip_id
) {
1607 if (result
== 0 && ids
->ip_desc
)
1608 device_set_desc(child
, ids
->ip_desc
);
1610 return_VALUE (result
);
1614 * Look for a MCFG table. If it is present, use the settings for
1615 * domain (segment) 0 to setup PCI config space access via the memory
1619 acpi_enable_pcie(void)
1621 ACPI_TABLE_HEADER
*hdr
;
1622 ACPI_MCFG_ALLOCATION
*alloc
, *end
;
1625 status
= AcpiGetTable(ACPI_SIG_MCFG
, 1, &hdr
);
1626 if (ACPI_FAILURE(status
))
1629 end
= (ACPI_MCFG_ALLOCATION
*)((char *)hdr
+ hdr
->Length
);
1630 alloc
= (ACPI_MCFG_ALLOCATION
*)((ACPI_TABLE_MCFG
*)hdr
+ 1);
1631 while (alloc
< end
) {
1632 if (alloc
->PciSegment
== 0) {
1633 pcie_cfgregopen(alloc
->Address
, alloc
->StartBusNumber
,
1634 alloc
->EndBusNumber
);
1642 * Scan all of the ACPI namespace and attach child devices.
1644 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1645 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1646 * However, in violation of the spec, some systems place their PCI link
1647 * devices in \, so we have to walk the whole namespace. We check the
1648 * type of namespace nodes, so this should be ok.
1651 acpi_probe_children(device_t bus
)
1656 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1659 * Scan the namespace and insert placeholders for all the devices that
1660 * we find. We also probe/attach any early devices.
1662 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1663 * we want to create nodes for all devices, not just those that are
1664 * currently present. (This assumes that we don't want to create/remove
1665 * devices as they appear, which might be smarter.)
1667 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "namespace scan\n"));
1668 AcpiWalkNamespace(ACPI_TYPE_ANY
, ACPI_ROOT_OBJECT
, 100,
1669 acpi_probe_child
, NULL
, bus
, NULL
);
1670 /* This gets us all the children that we added from the ACPI namespace. */
1671 device_get_children(bus
, &children
, &cnt
);
1673 /* Pre-allocate resources for our rman from any sysresource devices. */
1674 acpi_sysres_alloc(bus
);
1675 /* Create any static children by calling device identify methods. */
1676 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "device identify routines\n"));
1677 bus_generic_probe(bus
);
1679 /* Probe/attach all children, created staticly and from the namespace. */
1680 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "first bus_generic_attach\n"));
1681 bus_generic_attach_gpri(bus
, KOBJ_GPRI_ACPI
+2);
1682 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "second bus_generic_attach\n"));
1683 bus_generic_attach_gpri(bus
, KOBJ_GPRI_ACPI
+1);
1684 /* Re-check device presence for previously disabled devices. */
1685 acpi_reprobe_children(bus
, children
, cnt
);
1686 kfree(children
, M_TEMP
);
1687 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "third bus_generic_attach\n"));
1688 bus_generic_attach_gpri(bus
, KOBJ_GPRI_ACPI
);
1689 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "fourth bus_generic_attach\n"));
1690 bus_generic_attach_gpri(bus
, KOBJ_GPRI_ACPI
);
1693 * Some of these children may have attached others as part of their attach
1694 * process (eg. the root PCI bus driver), so rescan.
1696 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "fifth bus_generic_attach\n"));
1697 bus_generic_attach(bus
);
1699 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "sixth bus_generic_attach\n"));
1700 bus_generic_attach(bus
);
1702 /* Attach wake sysctls. */
1703 acpi_wake_sysctl_walk(bus
);
1705 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "done attaching children\n"));
1710 * Determine the probe order for a given device.
1713 acpi_probe_order(ACPI_HANDLE handle
, int *order
)
1715 ACPI_OBJECT_TYPE type
;
1718 * 1. I/O port and memory system resource holders
1719 * 2. Embedded controllers (to handle early accesses)
1720 * 3. PCI Link Devices
1723 AcpiGetType(handle
, &type
);
1724 if (acpi_MatchHid(handle
, "PNP0C01") || acpi_MatchHid(handle
, "PNP0C02"))
1726 else if (acpi_MatchHid(handle
, "PNP0C09"))
1728 else if (acpi_MatchHid(handle
, "PNP0C0F"))
1730 else if (type
== ACPI_TYPE_PROCESSOR
)
1735 * Flag a device as disabled, because it isn't present according to the
1736 * _STA method. We set the recheck instance-variable, to make sure that we
1737 * recheck the device presence at a later point.
1740 acpi_disable_not_present(device_t child
)
1742 device_disable(child
);
1743 acpi_set_recheck(child
, 1);
1747 * This rechecks the device presence for all the devices which were disabled
1748 * using acpi_disable_not_present().
1751 acpi_reprobe_children(device_t bus
, device_t
*children
, int cnt
)
1755 for (i
= 0; i
< cnt
; i
++) {
1756 device_t dev
= children
[i
];
1758 if (device_is_enabled(dev
))
1761 if (acpi_get_recheck(dev
)) {
1762 if (acpi_DeviceIsPresent(dev
)) {
1763 acpi_set_recheck(dev
, 0);
1766 * Currently we parse the resources for every
1767 * device at the first time, when we see
1768 * that it is present.
1770 acpi_parse_resources(dev
, acpi_get_handle(dev
),
1771 &acpi_res_parse_set
, NULL
);
1778 * Evaluate a child device and determine whether we might attach a device to
1782 acpi_probe_child(ACPI_HANDLE handle
, UINT32 level
, void *context
, void **status
)
1784 struct acpi_prw_data prw
;
1785 ACPI_OBJECT_TYPE type
;
1787 device_t bus
, child
;
1791 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1793 if (acpi_disabled("children"))
1794 return_ACPI_STATUS (AE_OK
);
1796 /* Skip this device if we think we'll have trouble with it. */
1797 if (acpi_avoid(handle
))
1798 return_ACPI_STATUS (AE_OK
);
1800 bus
= (device_t
)context
;
1801 if (ACPI_SUCCESS(AcpiGetType(handle
, &type
))) {
1802 handle_str
= acpi_name(handle
);
1804 case ACPI_TYPE_DEVICE
:
1806 * Since we scan from \, be sure to skip system scope objects.
1807 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1808 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
1809 * during the intialization and \_TZ_ is to support Notify() on it.
1811 if (strcmp(handle_str
, "\\_SB_") == 0 ||
1812 strcmp(handle_str
, "\\_TZ_") == 0)
1815 if (acpi_parse_prw(handle
, &prw
) == 0)
1816 AcpiSetupGpeForWake(handle
, prw
.gpe_handle
, prw
.gpe_bit
);
1819 case ACPI_TYPE_PROCESSOR
:
1820 case ACPI_TYPE_THERMAL
:
1821 case ACPI_TYPE_POWER
:
1823 * Create a placeholder device for this node. Sort the
1824 * placeholder so that the probe/attach passes will run
1825 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1826 * are reserved for special objects (i.e., system
1827 * resources). CPU devices have a very high order to
1828 * ensure they are probed after other devices.
1830 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "scanning '%s'\n", handle_str
));
1831 order
= level
* 10 + 100;
1832 acpi_probe_order(handle
, &order
);
1833 child
= BUS_ADD_CHILD(bus
, bus
, order
, NULL
, -1);
1837 /* Associate the handle with the device_t and vice versa. */
1838 acpi_set_handle(child
, handle
);
1839 AcpiAttachData(handle
, acpi_fake_objhandler
, child
);
1842 * Check that the device is present. If it's not present,
1843 * leave it disabled (so that we have a device_t attached to
1844 * the handle, but we don't probe it).
1846 * XXX PCI link devices sometimes report "present" but not
1847 * "functional" (i.e. if disabled). Go ahead and probe them
1848 * anyway since we may enable them later.
1850 if (type
== ACPI_TYPE_DEVICE
&& !acpi_DeviceIsPresent(child
)) {
1851 /* Never disable PCI link devices. */
1852 if (acpi_MatchHid(handle
, "PNP0C0F"))
1855 * Docking stations should remain enabled since the system
1856 * may be undocked at boot.
1858 if (ACPI_SUCCESS(AcpiGetHandle(handle
, "_DCK", &h
)))
1861 acpi_disable_not_present(child
);
1866 * Get the device's resource settings and attach them.
1867 * Note that if the device has _PRS but no _CRS, we need
1868 * to decide when it's appropriate to try to configure the
1869 * device. Ignore the return value here; it's OK for the
1870 * device not to have any resources.
1872 acpi_parse_resources(child
, handle
, &acpi_res_parse_set
, NULL
);
1877 return_ACPI_STATUS (AE_OK
);
1881 * AcpiAttachData() requires an object handler but never uses it. This is a
1882 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1885 acpi_fake_objhandler(ACPI_HANDLE h
, void *data
)
1890 acpi_shutdown_final(void *arg
, int howto
)
1892 struct acpi_softc
*sc
;
1896 * XXX Shutdown code should only run on the BSP (cpuid 0).
1897 * Some chipsets do not power off the system correctly if called from
1901 if ((howto
& RB_POWEROFF
) != 0) {
1902 status
= AcpiEnterSleepStatePrep(ACPI_STATE_S5
);
1903 if (ACPI_FAILURE(status
)) {
1904 device_printf(sc
->acpi_dev
, "AcpiEnterSleepStatePrep failed - %s\n",
1905 AcpiFormatException(status
));
1908 device_printf(sc
->acpi_dev
, "Powering system off\n");
1909 ACPI_DISABLE_IRQS();
1910 status
= AcpiEnterSleepState(ACPI_STATE_S5
);
1911 if (ACPI_FAILURE(status
)) {
1912 device_printf(sc
->acpi_dev
, "power-off failed - %s\n",
1913 AcpiFormatException(status
));
1916 device_printf(sc
->acpi_dev
, "power-off failed - timeout\n");
1918 } else if ((howto
& RB_HALT
) == 0 && sc
->acpi_handle_reboot
) {
1919 /* Reboot using the reset register. */
1920 status
= AcpiReset();
1921 if (ACPI_FAILURE(status
)) {
1922 if (status
!= AE_NOT_EXIST
)
1923 device_printf(sc
->acpi_dev
, "reset failed - %s\n",
1924 AcpiFormatException(status
));
1927 device_printf(sc
->acpi_dev
, "reset failed - timeout\n");
1929 } else if (sc
->acpi_do_disable
&& panicstr
== NULL
) {
1931 * Only disable ACPI if the user requested. On some systems, writing
1932 * the disable value to SMI_CMD hangs the system.
1934 device_printf(sc
->acpi_dev
, "Shutting down\n");
1940 acpi_enable_fixed_events(struct acpi_softc
*sc
)
1942 static int first_time
= 1;
1944 /* Enable and clear fixed events and install handlers. */
1945 if ((AcpiGbl_FADT
.Flags
& ACPI_FADT_POWER_BUTTON
) == 0) {
1946 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON
);
1947 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON
,
1948 acpi_event_power_button_sleep
, sc
);
1950 device_printf(sc
->acpi_dev
, "Power Button (fixed)\n");
1952 if ((AcpiGbl_FADT
.Flags
& ACPI_FADT_SLEEP_BUTTON
) == 0) {
1953 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON
);
1954 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON
,
1955 acpi_event_sleep_button_sleep
, sc
);
1957 device_printf(sc
->acpi_dev
, "Sleep Button (fixed)\n");
1964 * Returns true if the device is actually present and should
1965 * be attached to. This requires the present, enabled, UI-visible
1966 * and diagnostics-passed bits to be set.
1969 acpi_DeviceIsPresent(device_t dev
)
1975 h
= acpi_get_handle(dev
);
1978 status
= acpi_GetInteger(h
, "_STA", &s
);
1981 * If no _STA method or if it failed, then assume that
1982 * the device is present.
1984 if (ACPI_FAILURE(status
))
1987 return (ACPI_DEVICE_PRESENT(s
) ? TRUE
: FALSE
);
1991 * Returns true if the battery is actually present and inserted.
1994 acpi_BatteryIsPresent(device_t dev
)
2000 h
= acpi_get_handle(dev
);
2003 status
= acpi_GetInteger(h
, "_STA", &s
);
2006 * If no _STA method or if it failed, then assume that
2007 * the device is present.
2009 if (ACPI_FAILURE(status
))
2012 return (ACPI_BATTERY_PRESENT(s
) ? TRUE
: FALSE
);
2016 * Match a HID string against a handle
2019 acpi_MatchHid(ACPI_HANDLE h
, const char *hid
)
2021 ACPI_DEVICE_INFO
*devinfo
;
2025 if (hid
== NULL
|| h
== NULL
||
2026 ACPI_FAILURE(AcpiGetObjectInfo(h
, &devinfo
)))
2029 if ((devinfo
->Valid
& ACPI_VALID_HID
) != 0 &&
2030 strcmp(hid
, devinfo
->HardwareId
.String
) == 0)
2032 else if ((devinfo
->Valid
& ACPI_VALID_CID
) != 0) {
2033 for (i
= 0; i
< devinfo
->CompatibleIdList
.Count
; i
++) {
2034 if (strcmp(hid
, devinfo
->CompatibleIdList
.Ids
[i
].String
) == 0) {
2041 AcpiOsFree(devinfo
);
2046 * Match a UID string against a handle
2049 acpi_MatchUid(ACPI_HANDLE h
, const char *uid
)
2051 ACPI_DEVICE_INFO
*devinfo
;
2055 if (uid
== NULL
|| h
== NULL
||
2056 ACPI_FAILURE(AcpiGetObjectInfo(h
, &devinfo
)))
2059 if ((devinfo
->Valid
& ACPI_VALID_UID
) != 0 &&
2060 strcmp(uid
, devinfo
->UniqueId
.String
) == 0)
2063 AcpiOsFree(devinfo
);
2068 * Return the handle of a named object within our scope, ie. that of (parent)
2069 * or one if its parents.
2072 acpi_GetHandleInScope(ACPI_HANDLE parent
, char *path
, ACPI_HANDLE
*result
)
2077 /* Walk back up the tree to the root */
2079 status
= AcpiGetHandle(parent
, path
, &r
);
2080 if (ACPI_SUCCESS(status
)) {
2084 /* XXX Return error here? */
2085 if (status
!= AE_NOT_FOUND
)
2087 if (ACPI_FAILURE(AcpiGetParent(parent
, &r
)))
2088 return (AE_NOT_FOUND
);
2094 * Allocate a buffer with a preset data size.
2097 acpi_AllocBuffer(int size
)
2101 if ((buf
= kmalloc(size
+ sizeof(*buf
), M_ACPIDEV
, M_NOWAIT
)) == NULL
)
2104 buf
->Pointer
= (void *)(buf
+ 1);
2109 acpi_SetInteger(ACPI_HANDLE handle
, char *path
, UINT32 number
)
2112 ACPI_OBJECT_LIST args
;
2114 arg1
.Type
= ACPI_TYPE_INTEGER
;
2115 arg1
.Integer
.Value
= number
;
2117 args
.Pointer
= &arg1
;
2119 return (AcpiEvaluateObject(handle
, path
, &args
, NULL
));
2123 * Evaluate a path that should return an integer.
2126 acpi_GetInteger(ACPI_HANDLE handle
, char *path
, UINT32
*number
)
2133 handle
= ACPI_ROOT_OBJECT
;
2136 * Assume that what we've been pointed at is an Integer object, or
2137 * a method that will return an Integer.
2139 buf
.Pointer
= ¶m
;
2140 buf
.Length
= sizeof(param
);
2141 status
= AcpiEvaluateObject(handle
, path
, NULL
, &buf
);
2142 if (ACPI_SUCCESS(status
)) {
2143 if (param
.Type
== ACPI_TYPE_INTEGER
)
2144 *number
= param
.Integer
.Value
;
2150 * In some applications, a method that's expected to return an Integer
2151 * may instead return a Buffer (probably to simplify some internal
2152 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
2153 * convert it into an Integer as best we can.
2157 if (status
== AE_BUFFER_OVERFLOW
) {
2158 if ((buf
.Pointer
= AcpiOsAllocate(buf
.Length
)) == NULL
) {
2159 status
= AE_NO_MEMORY
;
2161 status
= AcpiEvaluateObject(handle
, path
, NULL
, &buf
);
2162 if (ACPI_SUCCESS(status
))
2163 status
= acpi_ConvertBufferToInteger(&buf
, number
);
2164 AcpiOsFree(buf
.Pointer
);
2171 acpi_ConvertBufferToInteger(ACPI_BUFFER
*bufp
, UINT32
*number
)
2177 p
= (ACPI_OBJECT
*)bufp
->Pointer
;
2178 if (p
->Type
== ACPI_TYPE_INTEGER
) {
2179 *number
= p
->Integer
.Value
;
2182 if (p
->Type
!= ACPI_TYPE_BUFFER
)
2184 if (p
->Buffer
.Length
> sizeof(int))
2185 return (AE_BAD_DATA
);
2188 val
= p
->Buffer
.Pointer
;
2189 for (i
= 0; i
< p
->Buffer
.Length
; i
++)
2190 *number
+= val
[i
] << (i
* 8);
2195 * Iterate over the elements of an a package object, calling the supplied
2196 * function for each element.
2198 * XXX possible enhancement might be to abort traversal on error.
2201 acpi_ForeachPackageObject(ACPI_OBJECT
*pkg
,
2202 void (*func
)(ACPI_OBJECT
*comp
, void *arg
), void *arg
)
2207 if (pkg
== NULL
|| pkg
->Type
!= ACPI_TYPE_PACKAGE
)
2208 return (AE_BAD_PARAMETER
);
2210 /* Iterate over components */
2212 comp
= pkg
->Package
.Elements
;
2213 for (; i
< pkg
->Package
.Count
; i
++, comp
++)
2220 * Find the (index)th resource object in a set.
2223 acpi_FindIndexedResource(ACPI_BUFFER
*buf
, int index
, ACPI_RESOURCE
**resp
)
2228 rp
= (ACPI_RESOURCE
*)buf
->Pointer
;
2232 if (rp
> (ACPI_RESOURCE
*)((uint8_t *)buf
->Pointer
+ buf
->Length
))
2233 return (AE_BAD_PARAMETER
);
2235 /* Check for terminator */
2236 if (rp
->Type
== ACPI_RESOURCE_TYPE_END_TAG
|| rp
->Length
== 0)
2237 return (AE_NOT_FOUND
);
2238 rp
= ACPI_NEXT_RESOURCE(rp
);
2247 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2249 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2250 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2251 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2254 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2257 acpi_AppendBufferResource(ACPI_BUFFER
*buf
, ACPI_RESOURCE
*res
)
2262 /* Initialise the buffer if necessary. */
2263 if (buf
->Pointer
== NULL
) {
2264 buf
->Length
= ACPI_INITIAL_RESOURCE_BUFFER_SIZE
;
2265 if ((buf
->Pointer
= AcpiOsAllocate(buf
->Length
)) == NULL
)
2266 return (AE_NO_MEMORY
);
2267 rp
= (ACPI_RESOURCE
*)buf
->Pointer
;
2268 rp
->Type
= ACPI_RESOURCE_TYPE_END_TAG
;
2269 rp
->Length
= ACPI_RS_SIZE_MIN
;
2275 * Scan the current buffer looking for the terminator.
2276 * This will either find the terminator or hit the end
2277 * of the buffer and return an error.
2279 rp
= (ACPI_RESOURCE
*)buf
->Pointer
;
2281 /* Range check, don't go outside the buffer */
2282 if (rp
>= (ACPI_RESOURCE
*)((uint8_t *)buf
->Pointer
+ buf
->Length
))
2283 return (AE_BAD_PARAMETER
);
2284 if (rp
->Type
== ACPI_RESOURCE_TYPE_END_TAG
|| rp
->Length
== 0)
2286 rp
= ACPI_NEXT_RESOURCE(rp
);
2290 * Check the size of the buffer and expand if required.
2293 * size of existing resources before terminator +
2294 * size of new resource and header +
2295 * size of terminator.
2297 * Note that this loop should really only run once, unless
2298 * for some reason we are stuffing a *really* huge resource.
2300 while ((((uint8_t *)rp
- (uint8_t *)buf
->Pointer
) +
2301 res
->Length
+ ACPI_RS_SIZE_NO_DATA
+
2302 ACPI_RS_SIZE_MIN
) >= buf
->Length
) {
2303 if ((newp
= AcpiOsAllocate(buf
->Length
* 2)) == NULL
)
2304 return (AE_NO_MEMORY
);
2305 bcopy(buf
->Pointer
, newp
, buf
->Length
);
2306 rp
= (ACPI_RESOURCE
*)((uint8_t *)newp
+
2307 ((uint8_t *)rp
- (uint8_t *)buf
->Pointer
));
2308 AcpiOsFree(buf
->Pointer
);
2309 buf
->Pointer
= newp
;
2310 buf
->Length
+= buf
->Length
;
2313 /* Insert the new resource. */
2314 bcopy(res
, rp
, res
->Length
+ ACPI_RS_SIZE_NO_DATA
);
2316 /* And add the terminator. */
2317 rp
= ACPI_NEXT_RESOURCE(rp
);
2318 rp
->Type
= ACPI_RESOURCE_TYPE_END_TAG
;
2319 rp
->Length
= ACPI_RS_SIZE_MIN
;
2325 * Set interrupt model.
2328 acpi_SetIntrModel(int model
)
2331 return (acpi_SetInteger(ACPI_ROOT_OBJECT
, "_PIC", model
));
2335 * DEPRECATED. This interface has serious deficiencies and will be
2338 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2339 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2342 acpi_SetSleepState(struct acpi_softc
*sc
, int state
)
2347 device_printf(sc
->acpi_dev
,
2348 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2351 return (acpi_EnterSleepState(sc
, state
));
2355 acpi_sleep_force(void *arg
)
2357 struct acpi_softc
*sc
;
2360 device_printf(sc
->acpi_dev
,
2361 "suspend request timed out, forcing sleep now\n");
2362 if (ACPI_FAILURE(acpi_EnterSleepState(sc
, sc
->acpi_next_sstate
)))
2363 device_printf(sc
->acpi_dev
, "force sleep state S%d failed\n",
2364 sc
->acpi_next_sstate
);
2368 * Request that the system enter the given suspend state. All /dev/apm
2369 * devices and devd(8) will be notified. Userland then has a chance to
2370 * save state and acknowledge the request. The system sleeps once all
2374 acpi_ReqSleepState(struct acpi_softc
*sc
, int state
)
2377 struct apm_clone_data
*clone
;
2380 if (state
< ACPI_STATE_S1
|| state
> ACPI_STATE_S5
)
2383 /* S5 (soft-off) should be entered directly with no waiting. */
2384 if (state
== ACPI_STATE_S5
) {
2385 if (ACPI_SUCCESS(acpi_EnterSleepState(sc
, state
)))
2391 /* This platform does not support acpi suspend/resume. */
2392 return (EOPNOTSUPP
);
2394 /* If a suspend request is already in progress, just return. */
2396 if (sc
->acpi_next_sstate
!= 0) {
2401 /* Record the pending state and notify all apm devices. */
2402 sc
->acpi_next_sstate
= state
;
2404 STAILQ_FOREACH(clone
, &sc
->apm_cdevs
, entries
) {
2405 clone
->notify_status
= APM_EV_NONE
;
2406 if ((clone
->flags
& ACPI_EVF_DEVD
) == 0) {
2407 KNOTE(&clone
->sel_read
.si_note
, 0);
2412 /* If devd(8) is not running, immediately enter the sleep state. */
2413 if (devctl_process_running() == FALSE
) {
2415 if (ACPI_SUCCESS(acpi_EnterSleepState(sc
, sc
->acpi_next_sstate
))) {
2422 /* Now notify devd(8) also. */
2423 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT
, state
);
2426 * Set a timeout to fire if userland doesn't ack the suspend request
2427 * in time. This way we still eventually go to sleep if we were
2428 * overheating or running low on battery, even if userland is hung.
2429 * We cancel this timeout once all userland acks are in or the
2430 * suspend request is aborted.
2432 callout_reset(&sc
->susp_force_to
, 10 * hz
, acpi_sleep_force
, sc
);
2439 * Acknowledge (or reject) a pending sleep state. The caller has
2440 * prepared for suspend and is now ready for it to proceed. If the
2441 * error argument is non-zero, it indicates suspend should be cancelled
2442 * and gives an errno value describing why. Once all votes are in,
2443 * we suspend the system.
2446 acpi_AckSleepState(struct apm_clone_data
*clone
, int error
)
2448 struct acpi_softc
*sc
;
2451 /* This platform does not support acpi suspend/resume. */
2452 return (EOPNOTSUPP
);
2454 /* If no pending sleep state, return an error. */
2456 sc
= clone
->acpi_sc
;
2457 if (sc
->acpi_next_sstate
== 0) {
2462 /* Caller wants to abort suspend process. */
2464 sc
->acpi_next_sstate
= 0;
2465 callout_stop(&sc
->susp_force_to
);
2466 device_printf(sc
->acpi_dev
,
2467 "listener on %s cancelled the pending suspend\n",
2468 devtoname(clone
->cdev
));
2474 * Mark this device as acking the suspend request. Then, walk through
2475 * all devices, seeing if they agree yet. We only count devices that
2476 * are writable since read-only devices couldn't ack the request.
2478 clone
->notify_status
= APM_EV_ACKED
;
2480 STAILQ_FOREACH(clone
, &sc
->apm_cdevs
, entries
) {
2481 if ((clone
->flags
& ACPI_EVF_WRITE
) != 0 &&
2482 clone
->notify_status
!= APM_EV_ACKED
) {
2488 /* If all devices have voted "yes", we will suspend now. */
2490 callout_stop(&sc
->susp_force_to
);
2494 if (ACPI_FAILURE(acpi_EnterSleepState(sc
, sc
->acpi_next_sstate
)))
2502 acpi_sleep_enable(void *arg
)
2504 ((struct acpi_softc
*)arg
)->acpi_sleep_disabled
= 0;
2507 enum acpi_sleep_state
{
2510 ACPI_SS_DEV_SUSPEND
,
2516 * Enter the desired system sleep state.
2518 * Currently we support S1-S5 but S4 is only S4BIOS
2521 acpi_EnterSleepState(struct acpi_softc
*sc
, int state
)
2526 enum acpi_sleep_state slp_state
;
2528 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__
, state
);
2530 /* Re-entry once we're suspending is not allowed. */
2533 if (sc
->acpi_sleep_disabled
) {
2535 device_printf(sc
->acpi_dev
,
2536 "suspend request ignored (not ready yet)\n");
2539 sc
->acpi_sleep_disabled
= 1;
2543 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2544 * drivers need this.
2548 slp_state
= ACPI_SS_NONE
;
2554 status
= AcpiGetSleepTypeData(state
, &TypeA
, &TypeB
);
2555 if (status
== AE_NOT_FOUND
) {
2556 device_printf(sc
->acpi_dev
,
2557 "Sleep state S%d not supported by BIOS\n", state
);
2559 } else if (ACPI_FAILURE(status
)) {
2560 device_printf(sc
->acpi_dev
, "AcpiGetSleepTypeData failed - %s\n",
2561 AcpiFormatException(status
));
2565 sc
->acpi_sstate
= state
;
2567 /* Enable any GPEs as appropriate and requested by the user. */
2568 acpi_wake_prep_walk(state
);
2569 slp_state
= ACPI_SS_GPE_SET
;
2572 * Inform all devices that we are going to sleep. If at least one
2573 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2575 * XXX Note that a better two-pass approach with a 'veto' pass
2576 * followed by a "real thing" pass would be better, but the current
2577 * bus interface does not provide for this.
2579 if (DEVICE_SUSPEND(root_bus
) != 0) {
2580 device_printf(sc
->acpi_dev
, "device_suspend failed\n");
2583 slp_state
= ACPI_SS_DEV_SUSPEND
;
2585 /* If testing device suspend only, back out of everything here. */
2586 if (acpi_susp_bounce
)
2589 status
= AcpiEnterSleepStatePrep(state
);
2590 if (ACPI_FAILURE(status
)) {
2591 device_printf(sc
->acpi_dev
, "AcpiEnterSleepStatePrep failed - %s\n",
2592 AcpiFormatException(status
));
2595 slp_state
= ACPI_SS_SLP_PREP
;
2597 if (sc
->acpi_sleep_delay
> 0)
2598 DELAY(sc
->acpi_sleep_delay
* 1000000);
2600 if (state
!= ACPI_STATE_S1
) {
2601 acpi_sleep_machdep(sc
, state
);
2603 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2604 if (state
== ACPI_STATE_S4
)
2607 ACPI_DISABLE_IRQS();
2608 status
= AcpiEnterSleepState(state
);
2609 if (ACPI_FAILURE(status
)) {
2610 device_printf(sc
->acpi_dev
, "AcpiEnterSleepState failed - %s\n",
2611 AcpiFormatException(status
));
2615 slp_state
= ACPI_SS_SLEPT
;
2619 * Shut down cleanly and power off. This will call us back through the
2620 * shutdown handlers.
2622 shutdown_nice(RB_POWEROFF
);
2626 status
= AE_BAD_PARAMETER
;
2631 * Back out state according to how far along we got in the suspend
2632 * process. This handles both the error and success cases.
2634 sc
->acpi_next_sstate
= 0;
2635 if (slp_state
>= ACPI_SS_GPE_SET
) {
2636 acpi_wake_prep_walk(state
);
2637 sc
->acpi_sstate
= ACPI_STATE_S0
;
2639 if (slp_state
>= ACPI_SS_SLP_PREP
)
2640 AcpiLeaveSleepState(state
);
2641 if (slp_state
>= ACPI_SS_DEV_SUSPEND
)
2642 DEVICE_RESUME(root_bus
);
2643 if (slp_state
>= ACPI_SS_SLEPT
)
2644 acpi_enable_fixed_events(sc
);
2646 /* Allow another sleep request after a while. */
2647 /* XXX: needs timeout */
2648 if (state
!= ACPI_STATE_S5
)
2649 acpi_sleep_enable(sc
);
2651 /* Run /etc/rc.resume after we are back. */
2652 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT
, state
);
2656 return_ACPI_STATUS (status
);
2659 /* Enable or disable the device's GPE. */
2661 acpi_wake_set_enable(device_t dev
, int enable
)
2663 struct acpi_prw_data prw
;
2667 /* Make sure the device supports waking the system and get the GPE. */
2668 if (acpi_parse_prw(acpi_get_handle(dev
), &prw
) != 0)
2671 flags
= acpi_get_flags(dev
);
2673 status
= AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
,
2675 if (ACPI_FAILURE(status
)) {
2676 device_printf(dev
, "enable wake failed\n");
2679 acpi_set_flags(dev
, flags
| ACPI_FLAG_WAKE_ENABLED
);
2681 status
= AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
,
2683 if (ACPI_FAILURE(status
)) {
2684 device_printf(dev
, "disable wake failed\n");
2687 acpi_set_flags(dev
, flags
& ~ACPI_FLAG_WAKE_ENABLED
);
2694 acpi_wake_sleep_prep(ACPI_HANDLE handle
, int sstate
)
2696 struct acpi_prw_data prw
;
2699 /* Check that this is a wake-capable device and get its GPE. */
2700 if (acpi_parse_prw(handle
, &prw
) != 0)
2702 dev
= acpi_get_device(handle
);
2705 * The destination sleep state must be less than (i.e., higher power)
2706 * or equal to the value specified by _PRW. If this GPE cannot be
2707 * enabled for the next sleep state, then disable it. If it can and
2708 * the user requested it be enabled, turn on any required power resources
2711 if (sstate
> prw
.lowest_wake
) {
2712 AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
, ACPI_GPE_DISABLE
);
2714 device_printf(dev
, "wake_prep disabled wake for %s (S%d)\n",
2715 acpi_name(handle
), sstate
);
2716 } else if (dev
&& (acpi_get_flags(dev
) & ACPI_FLAG_WAKE_ENABLED
) != 0) {
2717 acpi_pwr_wake_enable(handle
, 1);
2718 acpi_SetInteger(handle
, "_PSW", 1);
2720 device_printf(dev
, "wake_prep enabled for %s (S%d)\n",
2721 acpi_name(handle
), sstate
);
2728 acpi_wake_run_prep(ACPI_HANDLE handle
, int sstate
)
2730 struct acpi_prw_data prw
;
2734 * Check that this is a wake-capable device and get its GPE. Return
2735 * now if the user didn't enable this device for wake.
2737 if (acpi_parse_prw(handle
, &prw
) != 0)
2739 dev
= acpi_get_device(handle
);
2740 if (dev
== NULL
|| (acpi_get_flags(dev
) & ACPI_FLAG_WAKE_ENABLED
) == 0)
2744 * If this GPE couldn't be enabled for the previous sleep state, it was
2745 * disabled before going to sleep so re-enable it. If it was enabled,
2746 * clear _PSW and turn off any power resources it used.
2748 if (sstate
> prw
.lowest_wake
) {
2749 AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
, ACPI_GPE_ENABLE
);
2751 device_printf(dev
, "run_prep re-enabled %s\n", acpi_name(handle
));
2753 acpi_SetInteger(handle
, "_PSW", 0);
2754 acpi_pwr_wake_enable(handle
, 0);
2756 device_printf(dev
, "run_prep cleaned up for %s\n",
2764 acpi_wake_prep(ACPI_HANDLE handle
, UINT32 level
, void *context
, void **status
)
2768 /* If suspending, run the sleep prep function, otherwise wake. */
2769 sstate
= *(int *)context
;
2770 if (AcpiGbl_SystemAwakeAndRunning
)
2771 acpi_wake_sleep_prep(handle
, sstate
);
2773 acpi_wake_run_prep(handle
, sstate
);
2777 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2779 acpi_wake_prep_walk(int sstate
)
2781 ACPI_HANDLE sb_handle
;
2783 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT
, "\\_SB_", &sb_handle
))) {
2784 AcpiWalkNamespace(ACPI_TYPE_DEVICE
, sb_handle
, 100,
2785 acpi_wake_prep
, NULL
, &sstate
, NULL
);
2790 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2792 acpi_wake_sysctl_walk(device_t dev
)
2795 int error
, i
, numdevs
;
2800 error
= device_get_children(dev
, &devlist
, &numdevs
);
2801 if (error
!= 0 || numdevs
== 0) {
2803 kfree(devlist
, M_TEMP
);
2806 for (i
= 0; i
< numdevs
; i
++) {
2808 acpi_wake_sysctl_walk(child
);
2809 if (!device_is_attached(child
))
2811 status
= AcpiEvaluateObject(acpi_get_handle(child
), "_PRW", NULL
, NULL
);
2812 if (ACPI_SUCCESS(status
)) {
2813 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child
),
2814 SYSCTL_CHILDREN(device_get_sysctl_tree(child
)), OID_AUTO
,
2815 "wake", CTLTYPE_INT
| CTLFLAG_RW
, child
, 0,
2816 acpi_wake_set_sysctl
, "I", "Device set to wake the system");
2819 kfree(devlist
, M_TEMP
);
2826 /* Enable or disable wake from userland. */
2828 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS
)
2833 dev
= (device_t
)arg1
;
2834 enable
= (acpi_get_flags(dev
) & ACPI_FLAG_WAKE_ENABLED
) ? 1 : 0;
2836 error
= sysctl_handle_int(oidp
, &enable
, 0, req
);
2837 if (error
!= 0 || req
->newptr
== NULL
)
2839 if (enable
!= 0 && enable
!= 1)
2842 return (acpi_wake_set_enable(dev
, enable
));
2846 /* Parse a device's _PRW into a structure. */
2848 acpi_parse_prw(ACPI_HANDLE h
, struct acpi_prw_data
*prw
)
2851 ACPI_BUFFER prw_buffer
;
2852 ACPI_OBJECT
*res
, *res2
;
2853 int error
, i
, power_count
;
2855 if (h
== NULL
|| prw
== NULL
)
2859 * The _PRW object (7.2.9) is only required for devices that have the
2860 * ability to wake the system from a sleeping state.
2863 prw_buffer
.Pointer
= NULL
;
2864 prw_buffer
.Length
= ACPI_ALLOCATE_BUFFER
;
2865 status
= AcpiEvaluateObject(h
, "_PRW", NULL
, &prw_buffer
);
2866 if (ACPI_FAILURE(status
))
2868 res
= (ACPI_OBJECT
*)prw_buffer
.Pointer
;
2871 if (!ACPI_PKG_VALID(res
, 2))
2875 * Element 1 of the _PRW object:
2876 * The lowest power system sleeping state that can be entered while still
2877 * providing wake functionality. The sleeping state being entered must
2878 * be less than (i.e., higher power) or equal to this value.
2880 if (acpi_PkgInt32(res
, 1, &prw
->lowest_wake
) != 0)
2884 * Element 0 of the _PRW object:
2886 switch (res
->Package
.Elements
[0].Type
) {
2887 case ACPI_TYPE_INTEGER
:
2889 * If the data type of this package element is numeric, then this
2890 * _PRW package element is the bit index in the GPEx_EN, in the
2891 * GPE blocks described in the FADT, of the enable bit that is
2892 * enabled for the wake event.
2894 prw
->gpe_handle
= NULL
;
2895 prw
->gpe_bit
= res
->Package
.Elements
[0].Integer
.Value
;
2898 case ACPI_TYPE_PACKAGE
:
2900 * If the data type of this package element is a package, then this
2901 * _PRW package element is itself a package containing two
2902 * elements. The first is an object reference to the GPE Block
2903 * device that contains the GPE that will be triggered by the wake
2904 * event. The second element is numeric and it contains the bit
2905 * index in the GPEx_EN, in the GPE Block referenced by the
2906 * first element in the package, of the enable bit that is enabled for
2909 * For example, if this field is a package then it is of the form:
2910 * Package() {\_SB.PCI0.ISA.GPE, 2}
2912 res2
= &res
->Package
.Elements
[0];
2913 if (!ACPI_PKG_VALID(res2
, 2))
2915 prw
->gpe_handle
= acpi_GetReference(NULL
, &res2
->Package
.Elements
[0]);
2916 if (prw
->gpe_handle
== NULL
)
2918 if (acpi_PkgInt32(res2
, 1, &prw
->gpe_bit
) != 0)
2926 /* Elements 2 to N of the _PRW object are power resources. */
2927 power_count
= res
->Package
.Count
- 2;
2928 if (power_count
> ACPI_PRW_MAX_POWERRES
) {
2929 kprintf("ACPI device %s has too many power resources\n", acpi_name(h
));
2932 prw
->power_res_count
= power_count
;
2933 for (i
= 0; i
< power_count
; i
++)
2934 prw
->power_res
[i
] = res
->Package
.Elements
[i
];
2937 if (prw_buffer
.Pointer
!= NULL
)
2938 AcpiOsFree(prw_buffer
.Pointer
);
2943 * ACPI Event Handlers
2946 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2949 acpi_system_eventhandler_sleep(void *arg
, int state
)
2951 struct acpi_softc
*sc
;
2954 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__
, state
);
2958 /* Check if button action is disabled. */
2959 if (state
== ACPI_S_STATES_MAX
+ 1)
2962 /* Request that the system prepare to enter the given suspend state. */
2963 ret
= acpi_ReqSleepState((struct acpi_softc
*)arg
, state
);
2965 device_printf(sc
->acpi_dev
,
2966 "request to enter state S%d failed (err %d)\n", state
, ret
);
2972 acpi_system_eventhandler_wakeup(void *arg
, int state
)
2975 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__
, state
);
2977 /* Currently, nothing to do for wakeup. */
2983 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2986 acpi_event_power_button_sleep(void *context
)
2988 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
2990 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
2992 EVENTHANDLER_INVOKE(acpi_sleep_event
, sc
->acpi_power_button_sx
);
2994 return_VALUE (ACPI_INTERRUPT_HANDLED
);
2998 acpi_event_power_button_wake(void *context
)
3000 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
3002 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
3004 EVENTHANDLER_INVOKE(acpi_wakeup_event
, sc
->acpi_power_button_sx
);
3006 return_VALUE (ACPI_INTERRUPT_HANDLED
);
3010 acpi_event_sleep_button_sleep(void *context
)
3012 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
3014 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
3016 EVENTHANDLER_INVOKE(acpi_sleep_event
, sc
->acpi_sleep_button_sx
);
3018 return_VALUE (ACPI_INTERRUPT_HANDLED
);
3022 acpi_event_sleep_button_wake(void *context
)
3024 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
3026 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
3028 EVENTHANDLER_INVOKE(acpi_wakeup_event
, sc
->acpi_sleep_button_sx
);
3030 return_VALUE (ACPI_INTERRUPT_HANDLED
);
3034 * XXX This static buffer is suboptimal. There is no locking so only
3035 * use this for single-threaded callers.
3038 acpi_name(ACPI_HANDLE handle
)
3041 static char data
[256];
3043 buf
.Length
= sizeof(data
);
3046 if (handle
&& ACPI_SUCCESS(AcpiGetName(handle
, ACPI_FULL_PATHNAME
, &buf
)))
3048 return ("(unknown)");
3052 * Debugging/bug-avoidance. Avoid trying to fetch info on various
3053 * parts of the namespace.
3056 acpi_avoid(ACPI_HANDLE handle
)
3058 char *cp
, *env
, *np
;
3061 np
= acpi_name(handle
);
3064 if ((env
= kgetenv("debug.acpi.avoid")) == NULL
)
3067 /* Scan the avoid list checking for a match */
3070 while (*cp
!= 0 && isspace(*cp
))
3075 while (cp
[len
] != 0 && !isspace(cp
[len
]))
3077 if (!strncmp(cp
, np
, len
)) {
3089 * Debugging/bug-avoidance. Disable ACPI subsystem components.
3092 acpi_disabled(char *subsys
)
3097 if ((env
= kgetenv("debug.acpi.disabled")) == NULL
)
3099 if (strcmp(env
, "all") == 0) {
3104 /* Scan the disable list, checking for a match. */
3107 while (*cp
!= '\0' && isspace(*cp
))
3112 while (cp
[len
] != '\0' && !isspace(cp
[len
]))
3114 if (strncmp(cp
, subsys
, len
) == 0) {
3126 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
3127 * components are enabled by default. The ones that are not have to be
3128 * enabled via debug.acpi.enabled.
3131 acpi_enabled(char *subsys
)
3136 if ((env
= kgetenv("debug.acpi.enabled")) == NULL
)
3138 if (strcmp(env
, "all") == 0) {
3143 /* Scan the enable list, checking for a match. */
3146 while (*cp
!= '\0' && isspace(*cp
))
3151 while (cp
[len
] != '\0' && !isspace(cp
[len
]))
3153 if (strncmp(cp
, subsys
, len
) == 0) {
3165 * Control interface.
3167 * We multiplex ioctls for all participating ACPI devices here. Individual
3168 * drivers wanting to be accessible via /dev/acpi should use the
3169 * register/deregister interface to make their handlers visible.
3171 struct acpi_ioctl_hook
3173 TAILQ_ENTRY(acpi_ioctl_hook
) link
;
3179 static TAILQ_HEAD(,acpi_ioctl_hook
) acpi_ioctl_hooks
;
3180 static int acpi_ioctl_hooks_initted
;
3183 acpi_register_ioctl(u_long cmd
, acpi_ioctl_fn fn
, void *arg
)
3185 struct acpi_ioctl_hook
*hp
;
3187 if ((hp
= kmalloc(sizeof(*hp
), M_ACPIDEV
, M_NOWAIT
)) == NULL
)
3194 if (acpi_ioctl_hooks_initted
== 0) {
3195 TAILQ_INIT(&acpi_ioctl_hooks
);
3196 acpi_ioctl_hooks_initted
= 1;
3198 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks
, hp
, link
);
3205 acpi_deregister_ioctl(u_long cmd
, acpi_ioctl_fn fn
)
3207 struct acpi_ioctl_hook
*hp
;
3210 TAILQ_FOREACH(hp
, &acpi_ioctl_hooks
, link
)
3211 if (hp
->cmd
== cmd
&& hp
->fn
== fn
)
3215 TAILQ_REMOVE(&acpi_ioctl_hooks
, hp
, link
);
3216 kfree(hp
, M_ACPIDEV
);
3222 acpiopen(struct dev_open_args
*ap
)
3228 acpiclose(struct dev_close_args
*ap
)
3234 acpiioctl(struct dev_ioctl_args
*ap
)
3236 struct acpi_softc
*sc
;
3237 struct acpi_ioctl_hook
*hp
;
3242 sc
= ap
->a_head
.a_dev
->si_drv1
;
3245 * Scan the list of registered ioctls, looking for handlers.
3247 lwkt_gettoken(&acpi_token
);
3249 if (acpi_ioctl_hooks_initted
) {
3250 TAILQ_FOREACH(hp
, &acpi_ioctl_hooks
, link
) {
3251 if (hp
->cmd
== ap
->a_cmd
)
3257 error
= hp
->fn(ap
->a_cmd
, ap
->a_data
, hp
->arg
);
3258 lwkt_reltoken(&acpi_token
);
3263 * Core ioctls are not permitted for non-writable user.
3264 * Currently, other ioctls just fetch information.
3265 * Not changing system behavior.
3267 if ((ap
->a_fflag
& FWRITE
) == 0) {
3268 lwkt_reltoken(&acpi_token
);
3272 /* Core system ioctls. */
3273 switch (ap
->a_cmd
) {
3274 case ACPIIO_REQSLPSTATE
:
3275 state
= *(int *)ap
->a_data
;
3276 if (state
!= ACPI_STATE_S5
)
3277 error
= acpi_ReqSleepState(sc
, state
);
3279 device_printf(sc
->acpi_dev
,
3280 "power off via acpi ioctl not supported\n");
3284 case ACPIIO_ACKSLPSTATE
:
3287 error
= *(int *)ap
->a_data
;
3288 error
= acpi_AckSleepState(sc
->acpi_clone
, error
);
3291 case ACPIIO_SETSLPSTATE
: /* DEPRECATED */
3293 state
= *(int *)ap
->a_data
;
3294 if (state
>= ACPI_STATE_S0
&& state
<= ACPI_S_STATES_MAX
)
3295 if (ACPI_SUCCESS(acpi_SetSleepState(sc
, state
)))
3298 case ACPIIO_DO_MCALL
:
3299 if (acpi_allow_mcall
== 1) {
3300 struct acpi_mcall_ioctl_arg
*params
;
3301 ACPI_BUFFER result
= { ACPI_ALLOCATE_BUFFER
, NULL
};
3302 ACPI_OBJECT
*resobj
;
3305 params
= (struct acpi_mcall_ioctl_arg
*)ap
->a_data
;
3306 params
->retval
= AcpiEvaluateObject(NULL
, params
->path
,
3307 ¶ms
->args
, &result
);
3308 if (ACPI_SUCCESS(params
->retval
) && result
.Pointer
!= NULL
&&
3309 params
->result
.Pointer
!= NULL
) {
3310 params
->result
.Length
= min(params
->result
.Length
,
3312 copyout(result
.Pointer
, params
->result
.Pointer
,
3313 params
->result
.Length
);
3314 params
->reslen
= result
.Length
;
3315 if (result
.Length
>= sizeof(ACPI_OBJECT
)) {
3316 resobj
= (ACPI_OBJECT
*)params
->result
.Pointer
;
3317 switch (resobj
->Type
) {
3318 case ACPI_TYPE_STRING
:
3319 resobj
->String
.Pointer
= (char *)
3320 ((UINT8
*)(resobj
->String
.Pointer
) -
3321 (UINT8
*)result
.Pointer
+
3324 case ACPI_TYPE_BUFFER
:
3325 resobj
->Buffer
.Pointer
-= (UINT8
*)result
.Pointer
-
3332 if (result
.Pointer
!= NULL
)
3333 AcpiOsFree(result
.Pointer
);
3335 device_printf(sc
->acpi_dev
,
3336 "debug.acpi.allow_method_calls must be set\n");
3344 lwkt_reltoken(&acpi_token
);
3350 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
)
3354 UINT8 state
, TypeA
, TypeB
;
3356 sbuf_new(&sb
, NULL
, 32, SBUF_AUTOEXTEND
);
3357 for (state
= ACPI_STATE_S1
; state
< ACPI_S_STATES_MAX
+ 1; state
++)
3358 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state
, &TypeA
, &TypeB
)))
3359 sbuf_printf(&sb
, "S%d ", state
);
3362 error
= sysctl_handle_string(oidp
, sbuf_data(&sb
), sbuf_len(&sb
), req
);
3368 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
)
3370 char sleep_state
[10];
3372 u_int new_state
, old_state
;
3374 old_state
= *(u_int
*)oidp
->oid_arg1
;
3375 if (old_state
> ACPI_S_STATES_MAX
+ 1)
3376 strlcpy(sleep_state
, "unknown", sizeof(sleep_state
));
3378 strlcpy(sleep_state
, sleep_state_names
[old_state
], sizeof(sleep_state
));
3379 error
= sysctl_handle_string(oidp
, sleep_state
, sizeof(sleep_state
), req
);
3380 if (error
== 0 && req
->newptr
!= NULL
) {
3381 new_state
= ACPI_STATE_S0
;
3382 for (; new_state
<= ACPI_S_STATES_MAX
+ 1; new_state
++)
3383 if (strcmp(sleep_state
, sleep_state_names
[new_state
]) == 0)
3385 if (new_state
<= ACPI_S_STATES_MAX
+ 1) {
3386 if (new_state
!= old_state
)
3387 *(u_int
*)oidp
->oid_arg1
= new_state
;
3395 /* Inform devctl(4) when we receive a Notify. */
3397 acpi_UserNotify(const char *subsystem
, ACPI_HANDLE h
, uint8_t notify
)
3399 char notify_buf
[16];
3400 ACPI_BUFFER handle_buf
;
3403 if (subsystem
== NULL
)
3406 handle_buf
.Pointer
= NULL
;
3407 handle_buf
.Length
= ACPI_ALLOCATE_BUFFER
;
3408 status
= AcpiNsHandleToPathname(h
, &handle_buf
, FALSE
);
3409 if (ACPI_FAILURE(status
))
3411 ksnprintf(notify_buf
, sizeof(notify_buf
), "notify=0x%02x", notify
);
3412 devctl_notify("ACPI", subsystem
, handle_buf
.Pointer
, notify_buf
);
3413 AcpiOsFree(handle_buf
.Pointer
);
3418 * Support for parsing debug options from the kernel environment.
3420 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3421 * by specifying the names of the bits in the debug.acpi.layer and
3422 * debug.acpi.level environment variables. Bits may be unset by
3423 * prefixing the bit name with !.
3431 static struct debugtag dbg_layer
[] = {
3432 {"ACPI_UTILITIES", ACPI_UTILITIES
},
3433 {"ACPI_HARDWARE", ACPI_HARDWARE
},
3434 {"ACPI_EVENTS", ACPI_EVENTS
},
3435 {"ACPI_TABLES", ACPI_TABLES
},
3436 {"ACPI_NAMESPACE", ACPI_NAMESPACE
},
3437 {"ACPI_PARSER", ACPI_PARSER
},
3438 {"ACPI_DISPATCHER", ACPI_DISPATCHER
},
3439 {"ACPI_EXECUTER", ACPI_EXECUTER
},
3440 {"ACPI_RESOURCES", ACPI_RESOURCES
},
3441 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER
},
3442 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES
},
3443 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER
},
3444 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS
},
3446 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER
},
3447 {"ACPI_BATTERY", ACPI_BATTERY
},
3448 {"ACPI_BUS", ACPI_BUS
},
3449 {"ACPI_BUTTON", ACPI_BUTTON
},
3450 {"ACPI_EC", ACPI_EC
},
3451 {"ACPI_FAN", ACPI_FAN
},
3452 {"ACPI_POWERRES", ACPI_POWERRES
},
3453 {"ACPI_PROCESSOR", ACPI_PROCESSOR
},
3454 {"ACPI_THERMAL", ACPI_THERMAL
},
3455 {"ACPI_TIMER", ACPI_TIMER
},
3456 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS
},
3460 static struct debugtag dbg_level
[] = {
3461 {"ACPI_LV_INIT", ACPI_LV_INIT
},
3462 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT
},
3463 {"ACPI_LV_INFO", ACPI_LV_INFO
},
3464 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR
},
3465 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS
},
3467 /* Trace verbosity level 1 [Standard Trace Level] */
3468 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES
},
3469 {"ACPI_LV_PARSE", ACPI_LV_PARSE
},
3470 {"ACPI_LV_LOAD", ACPI_LV_LOAD
},
3471 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH
},
3472 {"ACPI_LV_EXEC", ACPI_LV_EXEC
},
3473 {"ACPI_LV_NAMES", ACPI_LV_NAMES
},
3474 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION
},
3475 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD
},
3476 {"ACPI_LV_TABLES", ACPI_LV_TABLES
},
3477 {"ACPI_LV_VALUES", ACPI_LV_VALUES
},
3478 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS
},
3479 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES
},
3480 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS
},
3481 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE
},
3482 {"ACPI_LV_EVALUATION", ACPI_LV_EVALUATION
},
3483 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1
},
3485 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3486 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS
},
3487 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS
},
3488 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS
},
3489 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2
},
3490 {"ACPI_LV_ALL", ACPI_LV_ALL
},
3492 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3493 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX
},
3494 {"ACPI_LV_THREADS", ACPI_LV_THREADS
},
3495 {"ACPI_LV_IO", ACPI_LV_IO
},
3496 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS
},
3497 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3
},
3499 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3500 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE
},
3501 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO
},
3502 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES
},
3503 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS
},
3504 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE
},
3509 acpi_parse_debug(char *cp
, struct debugtag
*tag
, UINT32
*flag
)
3521 while (*ep
&& !isspace(*ep
))
3532 for (i
= 0; tag
[i
].name
!= NULL
; i
++) {
3533 if (!strncmp(cp
, tag
[i
].name
, l
)) {
3535 *flag
|= tag
[i
].value
;
3537 *flag
&= ~tag
[i
].value
;
3545 acpi_set_debugging(void *junk
)
3547 char *layer
, *level
;
3554 layer
= kgetenv("debug.acpi.layer");
3555 level
= kgetenv("debug.acpi.level");
3556 if (layer
== NULL
&& level
== NULL
)
3559 kprintf("ACPI set debug");
3560 if (layer
!= NULL
) {
3561 if (strcmp("NONE", layer
) != 0)
3562 kprintf(" layer '%s'", layer
);
3563 acpi_parse_debug(layer
, &dbg_layer
[0], &AcpiDbgLayer
);
3566 if (level
!= NULL
) {
3567 if (strcmp("NONE", level
) != 0)
3568 kprintf(" level '%s'", level
);
3569 acpi_parse_debug(level
, &dbg_level
[0], &AcpiDbgLevel
);
3575 SYSINIT(acpi_debugging
, SI_BOOT1_TUNABLES
, SI_ORDER_ANY
, acpi_set_debugging
,
3579 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS
)
3582 struct debugtag
*tag
;
3585 if (sbuf_new(&sb
, NULL
, 128, SBUF_AUTOEXTEND
) == NULL
)
3587 if (strcmp(oidp
->oid_arg1
, "debug.acpi.layer") == 0) {
3588 tag
= &dbg_layer
[0];
3589 dbg
= &AcpiDbgLayer
;
3591 tag
= &dbg_level
[0];
3592 dbg
= &AcpiDbgLevel
;
3595 /* Get old values if this is a get request. */
3596 ACPI_SERIAL_BEGIN(acpi
);
3598 sbuf_cpy(&sb
, "NONE");
3599 } else if (req
->newptr
== NULL
) {
3600 for (; tag
->name
!= NULL
; tag
++) {
3601 if ((*dbg
& tag
->value
) == tag
->value
)
3602 sbuf_printf(&sb
, "%s ", tag
->name
);
3608 /* Copy out the old values to the user. */
3609 error
= SYSCTL_OUT(req
, sbuf_data(&sb
), sbuf_len(&sb
));
3612 /* If the user is setting a string, parse it. */
3613 if (error
== 0 && req
->newptr
!= NULL
) {
3615 ksetenv((char *)oidp
->oid_arg1
, (char *)req
->newptr
);
3616 acpi_set_debugging(NULL
);
3618 ACPI_SERIAL_END(acpi
);
3623 SYSCTL_PROC(_debug_acpi
, OID_AUTO
, layer
, CTLFLAG_RW
| CTLTYPE_STRING
,
3624 "debug.acpi.layer", 0, acpi_debug_sysctl
, "A", "");
3625 SYSCTL_PROC(_debug_acpi
, OID_AUTO
, level
, CTLFLAG_RW
| CTLTYPE_STRING
,
3626 "debug.acpi.level", 0, acpi_debug_sysctl
, "A", "");
3627 #endif /* ACPI_DEBUG */
3630 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS
)
3635 old
= acpi_debug_objects
;
3636 error
= sysctl_handle_int(oidp
, &acpi_debug_objects
, 0, req
);
3637 if (error
!= 0 || req
->newptr
== NULL
)
3639 if (old
== acpi_debug_objects
|| (old
&& acpi_debug_objects
))
3642 ACPI_SERIAL_BEGIN(acpi
);
3643 AcpiGbl_EnableAmlDebugObject
= acpi_debug_objects
? TRUE
: FALSE
;
3644 ACPI_SERIAL_END(acpi
);
3651 acpi_parse_interfaces(char *str
, struct acpi_interface
*iface
)
3658 while (isspace(*p
) || *p
== ',')
3663 p
= kstrdup(p
, M_TEMP
);
3664 for (i
= 0; i
< len
; i
++)
3669 if (isspace(p
[i
]) || p
[i
] == '\0')
3672 i
+= strlen(p
+ i
) + 1;
3679 iface
->data
= kmalloc(sizeof(*iface
->data
) * j
, M_TEMP
, M_WAITOK
);
3683 if (isspace(p
[i
]) || p
[i
] == '\0')
3686 iface
->data
[j
] = p
+ i
;
3687 i
+= strlen(p
+ i
) + 1;
3695 acpi_free_interfaces(struct acpi_interface
*iface
)
3697 kfree(iface
->data
[0], M_TEMP
);
3698 kfree(iface
->data
, M_TEMP
);
3702 acpi_reset_interfaces(device_t dev
)
3704 struct acpi_interface list
;
3708 if (acpi_parse_interfaces(acpi_install_interface
, &list
) > 0) {
3709 for (i
= 0; i
< list
.num
; i
++) {
3710 status
= AcpiInstallInterface(list
.data
[i
]);
3711 if (ACPI_FAILURE(status
))
3713 "failed to install _OSI(\"%s\"): %s\n",
3714 list
.data
[i
], AcpiFormatException(status
));
3715 else if (bootverbose
)
3716 device_printf(dev
, "installed _OSI(\"%s\")\n",
3719 acpi_free_interfaces(&list
);
3721 if (acpi_parse_interfaces(acpi_remove_interface
, &list
) > 0) {
3722 for (i
= 0; i
< list
.num
; i
++) {
3723 status
= AcpiRemoveInterface(list
.data
[i
]);
3724 if (ACPI_FAILURE(status
))
3726 "failed to remove _OSI(\"%s\"): %s\n",
3727 list
.data
[i
], AcpiFormatException(status
));
3728 else if (bootverbose
)
3729 device_printf(dev
, "removed _OSI(\"%s\")\n",
3732 acpi_free_interfaces(&list
);
3737 acpi_pm_func(u_long cmd
, void *arg
, ...)
3739 int state
, acpi_state
;
3741 struct acpi_softc
*sc
;
3746 case POWER_CMD_SUSPEND
:
3747 sc
= (struct acpi_softc
*)arg
;
3753 __va_start(ap
, arg
);
3754 state
= __va_arg(ap
, int);
3758 case POWER_SLEEP_STATE_STANDBY
:
3759 acpi_state
= sc
->acpi_standby_sx
;
3761 case POWER_SLEEP_STATE_SUSPEND
:
3762 acpi_state
= sc
->acpi_suspend_sx
;
3764 case POWER_SLEEP_STATE_HIBERNATE
:
3765 acpi_state
= ACPI_STATE_S4
;
3772 if (ACPI_FAILURE(acpi_EnterSleepState(sc
, acpi_state
)))
3785 acpi_pm_register(void *arg
)
3787 if (!cold
|| resource_disabled("acpi", 0))
3790 power_pm_register(POWER_PM_TYPE_ACPI
, acpi_pm_func
, NULL
);
3793 SYSINIT(power
, SI_BOOT2_KLD
, SI_ORDER_ANY
, acpi_pm_register
, 0);