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 static int acpi_group_module_level_code
;
294 TUNABLE_INT("debug.acpi.group_module_level_code", &acpi_group_module_level_code
);
295 SYSCTL_INT(_debug_acpi
, OID_AUTO
, group_module_level_code
, CTLFLAG_RD
,
296 &acpi_group_module_level_code
, 1,
297 "Group module-level code.");
299 /* Power devices off and on in suspend and resume. XXX Remove once tested. */
300 static int acpi_do_powerstate
= 1;
301 TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate
);
302 SYSCTL_INT(_debug_acpi
, OID_AUTO
, do_powerstate
, CTLFLAG_RW
,
303 &acpi_do_powerstate
, 1, "Turn off devices when suspending.");
305 /* Allow users to override quirks. */
306 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks
);
308 /* Allow to call ACPI methods from userland. */
309 static int acpi_allow_mcall
;
310 TUNABLE_INT("debug.acpi.allow_method_calls", &acpi_allow_mcall
);
312 static int acpi_susp_bounce
;
313 SYSCTL_INT(_debug_acpi
, OID_AUTO
, suspend_bounce
, CTLFLAG_RW
,
314 &acpi_susp_bounce
, 0, "Don't actually suspend, just test devices.");
317 * ACPI can only be loaded as a module by the loader; activating it after
318 * system bootstrap time is not useful, and can be fatal to the system.
319 * It also cannot be unloaded, since the entire system bus heirarchy hangs
323 acpi_modevent(struct module
*mod
, int event
, void *junk
)
328 kprintf("The ACPI driver cannot be loaded after boot.\n");
333 if (!cold
&& power_pm_get_type() == POWER_PM_TYPE_ACPI
)
343 * Perform early initialization.
348 static int started
= 0;
352 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
354 /* Only run the startup code once. The MADT driver also calls this. */
356 return_VALUE (AE_OK
);
359 /* Start up the ACPICA subsystem. */
360 status
= AcpiInitializeSubsystem();
361 if (ACPI_FAILURE(status
)) {
362 kprintf("ACPI: Subsystem initialization failed: %s\n",
363 AcpiFormatException(status
));
364 return_VALUE (status
);
368 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
369 * if more tables exist.
371 if (ACPI_FAILURE(status
= AcpiInitializeTables(NULL
, 2, TRUE
))) {
372 kprintf("ACPI: Table initialization failed: %s\n",
373 AcpiFormatException(status
));
374 return_VALUE (status
);
377 /* Set up any quirks we have for this system. */
378 if (acpi_quirks
== ACPI_Q_OK
)
379 acpi_table_quirks(&acpi_quirks
);
381 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
382 if (resource_int_value("acpi", 0, "disabled", &val
) == 0 && val
== 0)
383 acpi_quirks
&= ~ACPI_Q_BROKEN
;
384 if (acpi_quirks
& ACPI_Q_BROKEN
) {
385 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
389 return_VALUE (status
);
393 * Detect ACPI, perform early initialisation
396 acpi_identify(driver_t
*driver
, device_t parent
)
400 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
405 /* Check that we haven't been disabled with a hint. */
406 if (resource_disabled("acpi", 0))
409 /* Make sure we're not being doubly invoked. */
410 if (device_find_child(parent
, "acpi", 0) != NULL
)
413 ksnprintf(acpi_ca_version
, sizeof(acpi_ca_version
), "%x", ACPI_CA_VERSION
);
415 /* Initialize root tables. */
416 if (ACPI_FAILURE(acpi_Startup())) {
417 kprintf("ACPI: Try disabling either ACPI or apic support.\n");
421 /* Attach the actual ACPI device. */
422 if ((child
= BUS_ADD_CHILD(parent
, parent
, 10, "acpi", 0)) == NULL
) {
423 device_printf(parent
, "device_identify failed\n");
429 * Fetch some descriptive data from ACPI to put in our attach message.
432 acpi_probe(device_t dev
)
434 ACPI_TABLE_RSDP
*rsdp
;
435 ACPI_TABLE_HEADER
*rsdt
;
436 ACPI_PHYSICAL_ADDRESS paddr
;
437 char buf
[ACPI_OEM_ID_SIZE
+ ACPI_OEM_TABLE_ID_SIZE
+ 2];
440 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
442 if (power_pm_get_type() != POWER_PM_TYPE_NONE
&&
443 power_pm_get_type() != POWER_PM_TYPE_ACPI
) {
444 device_printf(dev
, "probe failed, other PM system enabled.\n");
445 return_VALUE (ENXIO
);
448 if ((paddr
= AcpiOsGetRootPointer()) == 0 ||
449 (rsdp
= AcpiOsMapMemory(paddr
, sizeof(ACPI_TABLE_RSDP
))) == NULL
)
450 return_VALUE (ENXIO
);
451 if (acpi_ignore_xsdt
== 0 &&
452 rsdp
->Revision
> 1 && rsdp
->XsdtPhysicalAddress
!= 0)
453 paddr
= (ACPI_PHYSICAL_ADDRESS
)rsdp
->XsdtPhysicalAddress
;
455 paddr
= (ACPI_PHYSICAL_ADDRESS
)rsdp
->RsdtPhysicalAddress
;
456 AcpiOsUnmapMemory(rsdp
, sizeof(ACPI_TABLE_RSDP
));
458 if ((rsdt
= AcpiOsMapMemory(paddr
, sizeof(ACPI_TABLE_HEADER
))) == NULL
)
459 return_VALUE (ENXIO
);
460 sbuf_new(&sb
, buf
, sizeof(buf
), SBUF_FIXEDLEN
);
461 sbuf_bcat(&sb
, rsdt
->OemId
, ACPI_OEM_ID_SIZE
);
464 sbuf_bcat(&sb
, rsdt
->OemTableId
, ACPI_OEM_TABLE_ID_SIZE
);
467 device_set_desc_copy(dev
, sbuf_data(&sb
));
469 AcpiOsUnmapMemory(rsdt
, sizeof(ACPI_TABLE_HEADER
));
475 acpi_attach(device_t dev
)
477 struct acpi_softc
*sc
;
484 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
486 sc
= device_get_softc(dev
);
488 callout_init(&sc
->susp_force_to
);
490 if ((error
= acpi_task_thread_init())) {
491 device_printf(dev
, "Could not start task thread.\n");
497 /* Initialize resource manager. */
498 acpi_rman_io
.rm_type
= RMAN_ARRAY
;
499 acpi_rman_io
.rm_start
= 0;
500 acpi_rman_io
.rm_end
= 0xffff;
501 acpi_rman_io
.rm_descr
= "ACPI I/O ports";
502 if (rman_init(&acpi_rman_io
, -1) != 0)
503 panic("acpi rman_init IO ports failed");
504 acpi_rman_mem
.rm_type
= RMAN_ARRAY
;
505 acpi_rman_mem
.rm_start
= 0;
506 acpi_rman_mem
.rm_end
= ~0ul;
507 acpi_rman_mem
.rm_descr
= "ACPI I/O memory addresses";
508 if (rman_init(&acpi_rman_mem
, -1) != 0)
509 panic("acpi rman_init memory failed");
511 /* Initialise the ACPI mutex */
512 ACPI_LOCK_INIT(acpi
, "acpi");
513 ACPI_SERIAL_INIT(acpi
);
518 * Set the globals from our tunables. This is needed because ACPICA
519 * uses UINT8 for some values and we have no tunable_byte.
521 AcpiGbl_AutoSerializeMethods
= acpi_auto_serialize_methods
? TRUE
: FALSE
;
522 AcpiGbl_DoNotUseXsdt
= acpi_ignore_xsdt
? TRUE
: FALSE
;
523 AcpiGbl_EnableAmlDebugObject
= acpi_debug_objects
? TRUE
: FALSE
;
524 AcpiGbl_EnableInterpreterSlack
= acpi_interpreter_slack
? TRUE
: FALSE
;
525 AcpiGbl_GroupModuleLevelCode
= acpi_group_module_level_code
? TRUE
: FALSE
;
526 AcpiGbl_Use32BitFadtAddresses
= acpi_fadt_addr32
? TRUE
: FALSE
;
527 AcpiGbl_Use32BitFacsAddresses
= acpi_facs_addr32
? TRUE
: FALSE
;
531 * Disable Debug Object output.
533 AcpiDbgLevel
&= ~ACPI_LV_DEBUG_OBJECT
;
536 /* Override OS interfaces if the user requested. */
537 acpi_reset_interfaces(dev
);
539 /* Load ACPI name space. */
540 status
= AcpiLoadTables();
541 if (ACPI_FAILURE(status
)) {
542 device_printf(dev
, "Could not load Namespace: %s\n",
543 AcpiFormatException(status
));
547 /* Handle MCFG table if present. */
551 * Note that some systems (specifically, those with namespace evaluation
552 * issues that require the avoidance of parts of the namespace) must
553 * avoid running _INI and _STA on everything, as well as dodging the final
556 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
558 * XXX We should arrange for the object init pass after we have attached
559 * all our child devices, but on many systems it works here.
561 flags
= ACPI_FULL_INITIALIZATION
;
562 if (ktestenv("debug.acpi.avoid"))
563 flags
= ACPI_NO_DEVICE_INIT
| ACPI_NO_OBJECT_INIT
;
565 /* Bring the hardware and basic handlers online. */
566 if (ACPI_FAILURE(status
= AcpiEnableSubsystem(flags
))) {
567 device_printf(dev
, "Could not enable ACPI: %s\n",
568 AcpiFormatException(status
));
573 * Fix up the interrupt timer after enabling ACPI, so that the
574 * interrupt cputimer that choked by ACPI power management could
575 * be resurrected before probing various devices.
578 cputimer_intr_pmfixup();
581 * Call the ECDT probe function to provide EC functionality before
582 * the namespace has been evaluated.
584 * XXX This happens before the sysresource devices have been probed and
585 * attached so its resources come from nexus0. In practice, this isn't
586 * a problem but should be addressed eventually.
588 acpi_ec_ecdt_probe(dev
);
590 /* Bring device objects and regions online. */
591 if (ACPI_FAILURE(status
= AcpiInitializeObjects(flags
))) {
592 device_printf(dev
, "Could not initialize ACPI objects: %s\n",
593 AcpiFormatException(status
));
598 * Setup our sysctl tree.
600 * XXX: This doesn't check to make sure that none of these fail.
602 sysctl_ctx_init(&sc
->acpi_sysctl_ctx
);
603 sc
->acpi_sysctl_tree
= SYSCTL_ADD_NODE(&sc
->acpi_sysctl_ctx
,
604 SYSCTL_STATIC_CHILDREN(_hw
), OID_AUTO
,
605 device_get_name(dev
), CTLFLAG_RD
, 0, "");
606 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
607 OID_AUTO
, "supported_sleep_state", CTLTYPE_STRING
| CTLFLAG_RD
,
608 0, 0, acpi_supported_sleep_state_sysctl
, "A", "");
609 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
610 OID_AUTO
, "power_button_state", CTLTYPE_STRING
| CTLFLAG_RW
,
611 &sc
->acpi_power_button_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
612 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
613 OID_AUTO
, "sleep_button_state", CTLTYPE_STRING
| CTLFLAG_RW
,
614 &sc
->acpi_sleep_button_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
615 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
616 OID_AUTO
, "lid_switch_state", CTLTYPE_STRING
| CTLFLAG_RW
,
617 &sc
->acpi_lid_switch_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
618 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
619 OID_AUTO
, "standby_state", CTLTYPE_STRING
| CTLFLAG_RW
,
620 &sc
->acpi_standby_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
621 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
622 OID_AUTO
, "suspend_state", CTLTYPE_STRING
| CTLFLAG_RW
,
623 &sc
->acpi_suspend_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
624 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
625 OID_AUTO
, "sleep_delay", CTLFLAG_RW
, &sc
->acpi_sleep_delay
, 0,
627 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
628 OID_AUTO
, "s4bios", CTLFLAG_RW
, &sc
->acpi_s4bios
, 0, "S4BIOS mode");
629 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
630 OID_AUTO
, "verbose", CTLFLAG_RW
, &sc
->acpi_verbose
, 0, "verbose mode");
631 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
632 OID_AUTO
, "disable_on_reboot", CTLFLAG_RW
,
633 &sc
->acpi_do_disable
, 0, "Disable ACPI when rebooting/halting system");
634 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
635 OID_AUTO
, "handle_reboot", CTLFLAG_RW
,
636 &sc
->acpi_handle_reboot
, 0, "Use ACPI Reset Register to reboot");
639 * Default to 1 second before sleeping to give some machines time to
642 sc
->acpi_sleep_delay
= 1;
644 sc
->acpi_verbose
= 1;
645 if ((env
= kgetenv("hw.acpi.verbose")) != NULL
) {
646 if (strcmp(env
, "0") != 0)
647 sc
->acpi_verbose
= 1;
651 /* Only enable reboot by default if the FADT says it is available. */
652 if (AcpiGbl_FADT
.Flags
& ACPI_FADT_RESET_REGISTER
)
653 sc
->acpi_handle_reboot
= 1;
655 /* Only enable S4BIOS by default if the FACS says it is available. */
656 if (AcpiGbl_FACS
->Flags
& ACPI_FACS_S4_BIOS_PRESENT
)
660 * Dispatch the default sleep state to devices. The lid switch is set
661 * to NONE by default to avoid surprising users.
663 sc
->acpi_power_button_sx
= ACPI_STATE_S5
;
664 sc
->acpi_lid_switch_sx
= ACPI_S_STATES_MAX
+ 1;
665 sc
->acpi_standby_sx
= ACPI_STATE_S1
;
666 sc
->acpi_suspend_sx
= ACPI_STATE_S3
;
668 /* Pick the first valid sleep state for the sleep button default. */
669 sc
->acpi_sleep_button_sx
= ACPI_S_STATES_MAX
+ 1;
670 for (state
= ACPI_STATE_S1
; state
<= ACPI_STATE_S4
; state
++)
671 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state
, &TypeA
, &TypeB
))) {
672 sc
->acpi_sleep_button_sx
= state
;
676 acpi_enable_fixed_events(sc
);
679 * Scan the namespace and attach/initialise children.
682 /* Register our shutdown handler. */
683 EVENTHANDLER_REGISTER(shutdown_final
, acpi_shutdown_final
, sc
,
687 * Register our acpi event handlers.
688 * XXX should be configurable eg. via userland policy manager.
690 EVENTHANDLER_REGISTER(acpi_sleep_event
, acpi_system_eventhandler_sleep
,
691 sc
, ACPI_EVENT_PRI_LAST
);
692 EVENTHANDLER_REGISTER(acpi_wakeup_event
, acpi_system_eventhandler_wakeup
,
693 sc
, ACPI_EVENT_PRI_LAST
);
695 /* Flag our initial states. */
696 sc
->acpi_enabled
= 1;
697 sc
->acpi_sstate
= ACPI_STATE_S0
;
698 sc
->acpi_sleep_disabled
= 0;
699 /* Create the control device */
700 sc
->acpi_dev_t
= make_dev(&acpi_ops
, 0, UID_ROOT
, GID_WHEEL
, 0644, "acpi");
701 sc
->acpi_dev_t
->si_drv1
= sc
;
703 if ((error
= acpi_machdep_init(dev
)))
706 /* Register ACPI again to pass the correct argument of pm_func. */
707 power_pm_register(POWER_PM_TYPE_ACPI
, acpi_pm_func
, sc
);
709 if (!acpi_disabled("bus"))
710 acpi_probe_children(dev
);
712 /* Update all GPEs and enable runtime GPEs. */
713 status
= AcpiUpdateAllGpes();
714 if (ACPI_FAILURE(status
)) {
715 device_printf(dev
, "Could not update all GPEs: %s\n",
716 AcpiFormatException(status
));
719 /* Allow sleep request after a while. */
720 /* timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME); */
727 cputimer_intr_pmfixup();
728 acpi_task_thread_schedule();
730 return_VALUE (error
);
734 acpi_suspend(device_t dev
)
736 device_t child
, *devlist
;
737 int error
, i
, numdevs
, pstate
;
739 /* First give child devices a chance to suspend. */
740 error
= bus_generic_suspend(dev
);
745 * Now, set them into the appropriate power state, usually D3. If the
746 * device has an _SxD method for the next sleep state, use that power
749 device_get_children(dev
, &devlist
, &numdevs
);
750 for (i
= 0; i
< numdevs
; i
++) {
751 /* If the device is not attached, we've powered it down elsewhere. */
753 if (!device_is_attached(child
))
757 * Default to D3 for all sleep states. The _SxD method is optional
758 * so set the powerstate even if it's absent.
760 pstate
= PCI_POWERSTATE_D3
;
761 error
= acpi_device_pwr_for_sleep(device_get_parent(child
),
763 if ((error
== 0 || error
== ESRCH
) && acpi_do_powerstate
)
764 pci_set_powerstate(child
, pstate
);
766 kfree(devlist
, M_TEMP
);
773 acpi_resume(device_t dev
)
777 device_t child
, *devlist
;
780 * Put all devices in D0 before resuming them. Call _S0D on each one
781 * since some systems expect this.
783 device_get_children(dev
, &devlist
, &numdevs
);
784 for (i
= 0; i
< numdevs
; i
++) {
786 handle
= acpi_get_handle(child
);
788 AcpiEvaluateObject(handle
, "_S0D", NULL
, NULL
);
789 if (device_is_attached(child
) && acpi_do_powerstate
)
790 pci_set_powerstate(child
, PCI_POWERSTATE_D0
);
792 kfree(devlist
, M_TEMP
);
794 return (bus_generic_resume(dev
));
798 acpi_shutdown(device_t dev
)
800 /* Allow children to shutdown first. */
801 bus_generic_shutdown(dev
);
804 * Enable any GPEs that are able to power-on the system (i.e., RTC).
805 * Also, disable any that are not valid for this state (most).
807 acpi_wake_prep_walk(ACPI_STATE_S5
);
813 * Handle a new device being added
816 acpi_add_child(device_t bus
, device_t parent
, int order
, const char *name
, int unit
)
818 struct acpi_device
*ad
;
821 if ((ad
= kmalloc(sizeof(*ad
), M_ACPIDEV
, M_NOWAIT
| M_ZERO
)) == NULL
)
824 resource_list_init(&ad
->ad_rl
);
825 child
= device_add_child_ordered(parent
, order
, name
, unit
);
827 device_set_ivars(child
, ad
);
829 kfree(ad
, M_ACPIDEV
);
834 acpi_print_child(device_t bus
, device_t child
)
836 struct acpi_device
*adev
= device_get_ivars(child
);
837 struct resource_list
*rl
= &adev
->ad_rl
;
840 retval
+= bus_print_child_header(bus
, child
);
841 retval
+= resource_list_print_type(rl
, "port", SYS_RES_IOPORT
, "%#lx");
842 retval
+= resource_list_print_type(rl
, "iomem", SYS_RES_MEMORY
, "%#lx");
843 retval
+= resource_list_print_type(rl
, "irq", SYS_RES_IRQ
, "%ld");
844 retval
+= resource_list_print_type(rl
, "drq", SYS_RES_DRQ
, "%ld");
845 if (device_get_flags(child
))
846 retval
+= kprintf(" flags %#x", device_get_flags(child
));
847 retval
+= bus_print_child_footer(bus
, child
);
853 * If this device is an ACPI child but no one claimed it, attempt
854 * to power it off. We'll power it back up when a driver is added.
856 * XXX Disabled for now since many necessary devices (like fdc and
857 * ATA) don't claim the devices we created for them but still expect
858 * them to be powered up.
861 acpi_probe_nomatch(device_t bus
, device_t child
)
864 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
868 * If a new driver has a chance to probe a child, first power it up.
870 * XXX Disabled for now (see acpi_probe_nomatch for details).
873 acpi_driver_added(device_t dev
, driver_t
*driver
)
875 device_t child
, *devlist
;
878 DEVICE_IDENTIFY(driver
, dev
);
879 device_get_children(dev
, &devlist
, &numdevs
);
880 for (i
= 0; i
< numdevs
; i
++) {
882 if (device_get_state(child
) == DS_NOTPRESENT
) {
883 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
884 if (device_probe_and_attach(child
) != 0) {
885 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
889 kfree(devlist
, M_TEMP
);
892 /* Location hint for devctl(8) */
894 acpi_child_location_str_method(device_t cbdev
, device_t child
, char *buf
,
897 struct acpi_device
*dinfo
= device_get_ivars(child
);
899 if (dinfo
->ad_handle
)
900 ksnprintf(buf
, buflen
, "handle=%s", acpi_name(dinfo
->ad_handle
));
902 ksnprintf(buf
, buflen
, "unknown");
906 /* PnP information for devctl(8) */
908 acpi_child_pnpinfo_str_method(device_t cbdev
, device_t child
, char *buf
,
911 ACPI_DEVICE_INFO
*adinfo
;
912 struct acpi_device
*dinfo
= device_get_ivars(child
);
914 if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo
->ad_handle
, &adinfo
))) {
915 ksnprintf(buf
, buflen
, "unknown");
917 ksnprintf(buf
, buflen
, "_HID=%s _UID=%s",
918 (adinfo
->Valid
& ACPI_VALID_HID
) ?
919 adinfo
->HardwareId
.String
: "none",
920 (adinfo
->Valid
& ACPI_VALID_UID
) ?
921 adinfo
->UniqueId
.String
: "0");
929 * Handle per-device ivars
932 acpi_read_ivar(device_t dev
, device_t child
, int index
, uintptr_t *result
)
934 struct acpi_device
*ad
;
936 if ((ad
= device_get_ivars(child
)) == NULL
) {
937 device_printf(child
, "device has no ivars\n");
941 /* ACPI and ISA compatibility ivars */
943 case ACPI_IVAR_HANDLE
:
944 *(ACPI_HANDLE
*)result
= ad
->ad_handle
;
946 case ACPI_IVAR_MAGIC
:
947 *result
= ad
->ad_magic
;
949 case ACPI_IVAR_PRIVATE
:
950 *(void **)result
= ad
->ad_private
;
952 case ACPI_IVAR_FLAGS
:
953 *(int *)result
= ad
->ad_flags
;
955 case ACPI_IVAR_RECHECK
:
956 *(int *)result
= ad
->ad_recheck
;
958 case ISA_IVAR_VENDORID
:
959 case ISA_IVAR_SERIAL
:
960 case ISA_IVAR_COMPATID
:
963 case ISA_IVAR_LOGICALID
:
964 *(int *)result
= acpi_isa_get_logicalid(child
);
974 acpi_write_ivar(device_t dev
, device_t child
, int index
, uintptr_t value
)
976 struct acpi_device
*ad
;
978 if ((ad
= device_get_ivars(child
)) == NULL
) {
979 device_printf(child
, "device has no ivars\n");
984 case ACPI_IVAR_HANDLE
:
985 ad
->ad_handle
= (ACPI_HANDLE
)value
;
987 case ACPI_IVAR_MAGIC
:
988 ad
->ad_magic
= value
;
990 case ACPI_IVAR_PRIVATE
:
991 ad
->ad_private
= (void *)value
;
993 case ACPI_IVAR_FLAGS
:
994 ad
->ad_flags
= (int)value
;
996 case ACPI_IVAR_RECHECK
:
997 ad
->ad_recheck
= (int)value
;
1000 panic("bad ivar write request (%d)", index
);
1008 * Handle child resource allocation/removal
1010 static struct resource_list
*
1011 acpi_get_rlist(device_t dev
, device_t child
)
1013 struct acpi_device
*ad
;
1015 ad
= device_get_ivars(child
);
1016 return (&ad
->ad_rl
);
1020 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
1021 * duplicates, we merge any in the sysresource attach routine.
1024 acpi_sysres_alloc(device_t dev
)
1026 struct resource
*res
;
1027 struct resource_list
*rl
;
1028 struct resource_list_entry
*rle
;
1030 char *sysres_ids
[] = { "PNP0C01", "PNP0C02", NULL
};
1034 * Probe/attach any sysresource devices. This would be unnecessary if we
1035 * had multi-pass probe/attach.
1037 if (device_get_children(dev
, &children
, &child_count
) != 0)
1039 for (i
= 0; i
< child_count
; i
++) {
1040 if (ACPI_ID_PROBE(dev
, children
[i
], sysres_ids
) != NULL
)
1041 device_probe_and_attach(children
[i
]);
1043 kfree(children
, M_TEMP
);
1045 rl
= BUS_GET_RESOURCE_LIST(device_get_parent(dev
), dev
);
1048 SLIST_FOREACH(rle
, rl
, link
) {
1049 if (rle
->res
!= NULL
) {
1050 device_printf(dev
, "duplicate resource for %lx\n", rle
->start
);
1054 /* Only memory and IO resources are valid here. */
1055 switch (rle
->type
) {
1056 case SYS_RES_IOPORT
:
1059 case SYS_RES_MEMORY
:
1060 rm
= &acpi_rman_mem
;
1066 /* Pre-allocate resource and add to our rman pool. */
1067 res
= BUS_ALLOC_RESOURCE(device_get_parent(dev
), dev
, rle
->type
,
1068 &rle
->rid
, rle
->start
, rle
->start
+ rle
->count
- 1, rle
->count
,
1071 rman_manage_region(rm
, rman_get_start(res
), rman_get_end(res
));
1074 device_printf(dev
, "reservation of %lx, %lx (%d) failed\n",
1075 rle
->start
, rle
->count
, rle
->type
);
1080 static struct resource
*
1081 acpi_alloc_resource(device_t bus
, device_t child
, int type
, int *rid
,
1082 u_long start
, u_long end
, u_long count
, u_int flags
, int cpuid
)
1085 struct acpi_device
*ad
= device_get_ivars(child
);
1086 struct resource_list
*rl
= &ad
->ad_rl
;
1087 struct resource_list_entry
*rle
;
1088 struct resource
*res
;
1093 /* We only handle memory and IO resources through rman. */
1095 case SYS_RES_IOPORT
:
1098 case SYS_RES_MEMORY
:
1099 rm
= &acpi_rman_mem
;
1105 ACPI_SERIAL_BEGIN(acpi
);
1108 * If this is an allocation of the "default" range for a given RID, and
1109 * we know what the resources for this device are (i.e., they're on the
1110 * child's resource list), use those start/end values.
1112 if (bus
== device_get_parent(child
) && start
== 0UL && end
== ~0UL) {
1113 rle
= resource_list_find(rl
, type
, *rid
);
1123 * If this is an allocation of a specific range, see if we can satisfy
1124 * the request from our system resource regions. If we can't, pass the
1125 * request up to the parent.
1127 if (start
+ count
- 1 == end
&& rm
!= NULL
)
1128 res
= rman_reserve_resource(rm
, start
, end
, count
, flags
& ~RF_ACTIVE
,
1131 res
= BUS_ALLOC_RESOURCE(device_get_parent(bus
), child
, type
, rid
,
1132 start
, end
, count
, flags
, cpuid
);
1134 rman_set_rid(res
, *rid
);
1136 /* If requested, activate the resource using the parent's method. */
1137 if (flags
& RF_ACTIVE
)
1138 if (bus_activate_resource(child
, type
, *rid
, res
) != 0) {
1139 rman_release_resource(res
);
1145 if (res
!= NULL
&& device_get_parent(child
) == bus
)
1149 * Since bus_config_intr() takes immediate effect, we cannot
1150 * configure the interrupt associated with a device when we
1151 * parse the resources but have to defer it until a driver
1152 * actually allocates the interrupt via bus_alloc_resource().
1154 * NB: Lookup failure is fine, since the device may add its
1155 * own interrupt resources, e.g. MSI or MSI-X.
1158 acpi_lookup_irq_resource(child
, *rid
, res
, &ares
))) {
1159 acpi_config_intr(child
, &ares
);
1161 kprintf("irq resource not found\n");
1167 ACPI_SERIAL_END(acpi
);
1172 acpi_release_resource(device_t bus
, device_t child
, int type
, int rid
,
1178 /* We only handle memory and IO resources through rman. */
1180 case SYS_RES_IOPORT
:
1183 case SYS_RES_MEMORY
:
1184 rm
= &acpi_rman_mem
;
1190 ACPI_SERIAL_BEGIN(acpi
);
1193 * If this resource belongs to one of our internal managers,
1194 * deactivate it and release it to the local pool. If it doesn't,
1195 * pass this request up to the parent.
1197 if (rm
!= NULL
&& rman_is_region_manager(r
, rm
)) {
1198 if (rman_get_flags(r
) & RF_ACTIVE
) {
1199 ret
= bus_deactivate_resource(child
, type
, rid
, r
);
1203 ret
= rman_release_resource(r
);
1205 ret
= BUS_RELEASE_RESOURCE(device_get_parent(bus
), child
, type
, rid
, r
);
1208 ACPI_SERIAL_END(acpi
);
1213 acpi_delete_resource(device_t bus
, device_t child
, int type
, int rid
)
1215 struct resource_list
*rl
;
1217 rl
= acpi_get_rlist(bus
, child
);
1218 resource_list_delete(rl
, type
, rid
);
1221 /* Allocate an IO port or memory resource, given its GAS. */
1223 acpi_bus_alloc_gas(device_t dev
, int *type
, int *rid
, ACPI_GENERIC_ADDRESS
*gas
,
1224 struct resource
**res
, u_int flags
)
1226 int error
, res_type
;
1229 if (type
== NULL
|| rid
== NULL
|| gas
== NULL
|| res
== NULL
)
1232 /* We only support memory and IO spaces. */
1233 switch (gas
->SpaceId
) {
1234 case ACPI_ADR_SPACE_SYSTEM_MEMORY
:
1235 res_type
= SYS_RES_MEMORY
;
1237 case ACPI_ADR_SPACE_SYSTEM_IO
:
1238 res_type
= SYS_RES_IOPORT
;
1241 return (EOPNOTSUPP
);
1245 * If the register width is less than 8, assume the BIOS author means
1246 * it is a bit field and just allocate a byte.
1248 if (gas
->BitWidth
&& gas
->BitWidth
< 8)
1251 /* Validate the address after we're sure we support the space. */
1252 if (gas
->Address
== 0 || gas
->BitWidth
== 0)
1255 bus_set_resource(dev
, res_type
, *rid
, gas
->Address
,
1256 gas
->BitWidth
/ 8, -1);
1257 *res
= bus_alloc_resource_any(dev
, res_type
, rid
, RF_ACTIVE
| flags
);
1262 bus_delete_resource(dev
, res_type
, *rid
);
1268 acpi_eval_osc(device_t dev
, ACPI_HANDLE handle
, const char *uuidstr
,
1269 int revision
, uint32_t *buf
, int count
)
1271 ACPI_BUFFER retbuf
= { ACPI_ALLOCATE_BUFFER
, NULL
};
1272 ACPI_OBJECT_LIST arglist
;
1274 ACPI_OBJECT
*retobj
;
1278 uint8_t oscuuid
[ACPI_UUID_LENGTH
];
1281 if (parse_uuid(uuidstr
, &uuid
) != 0)
1283 le_uuid_enc(oscuuid
, &uuid
);
1285 arglist
.Pointer
= arg
;
1287 arg
[0].Type
= ACPI_TYPE_BUFFER
;
1288 arg
[0].Buffer
.Length
= ACPI_UUID_LENGTH
;
1289 arg
[0].Buffer
.Pointer
= oscuuid
; /* UUID */
1290 arg
[1].Type
= ACPI_TYPE_INTEGER
;
1291 arg
[1].Integer
.Value
= revision
; /* revision */
1292 arg
[2].Type
= ACPI_TYPE_INTEGER
;
1293 arg
[2].Integer
.Value
= count
; /* # of cap integers */
1294 arg
[3].Type
= ACPI_TYPE_BUFFER
;
1295 arg
[3].Buffer
.Length
= count
* sizeof(uint32_t); /* capabilities buffer */
1296 arg
[3].Buffer
.Pointer
= (uint8_t *)buf
;
1298 status
= AcpiEvaluateObject(handle
, "_OSC", &arglist
, &retbuf
);
1299 if (ACPI_FAILURE(status
))
1301 retobj
= retbuf
.Pointer
;
1302 error
= ((uint32_t *)retobj
->Buffer
.Pointer
)[0] & ACPI_OSC_ERRMASK
;
1306 if (error
& ACPI_OSCERR_FAILURE
)
1307 device_printf(dev
, "_OSC unable to process request\n");
1308 if (error
& ACPI_OSCERR_BADUUID
)
1309 device_printf(dev
, "_OSC unrecognized UUID (%s)\n", uuidstr
);
1310 if (error
& ACPI_OSCERR_BADREV
)
1311 device_printf(dev
, "_OSC unrecognized revision ID (%d)\n", revision
);
1312 if (error
& ACPI_OSCERR_CAPSMASKED
) {
1313 if ((buf
[0] & ACPI_OSC_QUERY_SUPPORT
) == 0) {
1314 for (i
= 1; i
< count
; i
++) {
1316 "_OSC capabilities have been masked: buf[%d]:%#x\n",
1317 i
, buf
[i
] & ~((uint32_t *)retobj
->Buffer
.Pointer
)[i
]);
1319 status
= AE_SUPPORT
;
1324 if (buf
[0] & ACPI_OSC_QUERY_SUPPORT
) {
1325 for (i
= 0; i
< count
; i
++)
1326 buf
[i
] = ((uint32_t *)retobj
->Buffer
.Pointer
)[i
];
1330 if (retbuf
.Pointer
!= NULL
)
1331 AcpiOsFree(retbuf
.Pointer
);
1335 /* Probe _HID and _CID for compatible ISA PNP ids. */
1337 acpi_isa_get_logicalid(device_t dev
)
1339 ACPI_DEVICE_INFO
*devinfo
;
1343 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1348 /* Fetch and validate the HID. */
1349 if ((h
= acpi_get_handle(dev
)) == NULL
||
1350 ACPI_FAILURE(AcpiGetObjectInfo(h
, &devinfo
)))
1353 if ((devinfo
->Valid
& ACPI_VALID_HID
) != 0)
1354 pnpid
= PNP_EISAID(devinfo
->HardwareId
.String
);
1358 AcpiOsFree(devinfo
);
1359 return_VALUE (pnpid
);
1363 acpi_isa_get_compatid(device_t dev
, uint32_t *cids
, int count
)
1365 ACPI_DEVICE_INFO
*devinfo
;
1370 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1376 /* Fetch and validate the CID */
1377 if ((h
= acpi_get_handle(dev
)) == NULL
||
1378 ACPI_FAILURE(AcpiGetObjectInfo(h
, &devinfo
)) ||
1379 (devinfo
->Valid
& ACPI_VALID_CID
) == 0)
1382 if (devinfo
->CompatibleIdList
.Count
< count
)
1383 count
= devinfo
->CompatibleIdList
.Count
;
1384 for (i
= 0; i
< count
; i
++) {
1385 if (strncmp(devinfo
->CompatibleIdList
.Ids
[i
].String
, "PNP", 3) != 0)
1387 *pnpid
++ = PNP_EISAID(devinfo
->CompatibleIdList
.Ids
[i
].String
);
1393 AcpiOsFree(devinfo
);
1394 return_VALUE (valid
);
1398 acpi_device_id_probe(device_t bus
, device_t dev
, char **ids
)
1403 h
= acpi_get_handle(dev
);
1404 if (ids
== NULL
|| h
== NULL
|| acpi_get_type(dev
) != ACPI_TYPE_DEVICE
)
1407 /* Try to match one of the array of IDs with a HID or CID. */
1408 for (i
= 0; ids
[i
] != NULL
; i
++) {
1409 if (acpi_MatchHid(h
, ids
[i
]))
1416 acpi_device_eval_obj(device_t bus
, device_t dev
, ACPI_STRING pathname
,
1417 ACPI_OBJECT_LIST
*parameters
, ACPI_BUFFER
*ret
)
1422 h
= ACPI_ROOT_OBJECT
;
1423 else if ((h
= acpi_get_handle(dev
)) == NULL
)
1424 return (AE_BAD_PARAMETER
);
1425 return (AcpiEvaluateObject(h
, pathname
, parameters
, ret
));
1429 acpi_device_pwr_for_sleep(device_t bus
, device_t dev
, int *dstate
)
1431 struct acpi_softc
*sc
;
1437 sc
= device_get_softc(bus
);
1438 handle
= acpi_get_handle(dev
);
1441 * XXX If we find these devices, don't try to power them down.
1442 * The serial and IRDA ports on my T23 hang the system when
1443 * set to D3 and it appears that such legacy devices may
1444 * need special handling in their drivers.
1446 if (handle
== NULL
||
1447 acpi_MatchHid(handle
, "PNP0500") ||
1448 acpi_MatchHid(handle
, "PNP0501") ||
1449 acpi_MatchHid(handle
, "PNP0502") ||
1450 acpi_MatchHid(handle
, "PNP0510") ||
1451 acpi_MatchHid(handle
, "PNP0511"))
1455 * Override next state with the value from _SxD, if present. If no
1456 * dstate argument was provided, don't fetch the return value.
1458 ksnprintf(sxd
, sizeof(sxd
), "_S%dD", sc
->acpi_sstate
);
1460 status
= acpi_GetInteger(handle
, sxd
, dstate
);
1462 status
= AcpiEvaluateObject(handle
, sxd
, NULL
, NULL
);
1479 /* Callback arg for our implementation of walking the namespace. */
1480 struct acpi_device_scan_ctx
{
1481 acpi_scan_cb_t user_fn
;
1487 acpi_device_scan_cb(ACPI_HANDLE h
, UINT32 level
, void *arg
, void **retval
)
1489 struct acpi_device_scan_ctx
*ctx
;
1490 device_t dev
, old_dev
;
1492 ACPI_OBJECT_TYPE type
;
1495 * Skip this device if we think we'll have trouble with it or it is
1496 * the parent where the scan began.
1498 ctx
= (struct acpi_device_scan_ctx
*)arg
;
1499 if (acpi_avoid(h
) || h
== ctx
->parent
)
1502 /* If this is not a valid device type (e.g., a method), skip it. */
1503 if (ACPI_FAILURE(AcpiGetType(h
, &type
)))
1505 if (type
!= ACPI_TYPE_DEVICE
&& type
!= ACPI_TYPE_PROCESSOR
&&
1506 type
!= ACPI_TYPE_THERMAL
&& type
!= ACPI_TYPE_POWER
)
1510 * Call the user function with the current device. If it is unchanged
1511 * afterwards, return. Otherwise, we update the handle to the new dev.
1513 old_dev
= acpi_get_device(h
);
1515 status
= ctx
->user_fn(h
, &dev
, level
, ctx
->arg
);
1516 if (ACPI_FAILURE(status
) || old_dev
== dev
)
1519 /* Remove the old child and its connection to the handle. */
1520 if (old_dev
!= NULL
) {
1521 device_delete_child(device_get_parent(old_dev
), old_dev
);
1522 AcpiDetachData(h
, acpi_fake_objhandler
);
1525 /* Recreate the handle association if the user created a device. */
1527 AcpiAttachData(h
, acpi_fake_objhandler
, dev
);
1533 acpi_device_scan_children(device_t bus
, device_t dev
, int max_depth
,
1534 acpi_scan_cb_t user_fn
, void *arg
)
1537 struct acpi_device_scan_ctx ctx
;
1539 if (acpi_disabled("children"))
1543 h
= ACPI_ROOT_OBJECT
;
1544 else if ((h
= acpi_get_handle(dev
)) == NULL
)
1545 return (AE_BAD_PARAMETER
);
1546 ctx
.user_fn
= user_fn
;
1549 return (AcpiWalkNamespace(ACPI_TYPE_ANY
, h
, max_depth
,
1550 acpi_device_scan_cb
, NULL
, &ctx
, NULL
));
1554 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1555 * device power states since it's close enough to ACPI.
1558 acpi_set_powerstate_method(device_t bus
, device_t child
, int state
)
1565 h
= acpi_get_handle(child
);
1566 if (state
< ACPI_STATE_D0
|| state
> ACPI_STATE_D3
)
1571 /* Ignore errors if the power methods aren't present. */
1572 status
= acpi_pwr_switch_consumer(h
, state
);
1573 if (ACPI_FAILURE(status
) && status
!= AE_NOT_FOUND
1574 && status
!= AE_BAD_PARAMETER
)
1575 device_printf(bus
, "failed to set ACPI power state D%d on %s: %s\n",
1576 state
, acpi_name(h
), AcpiFormatException(status
));
1582 acpi_isa_pnp_probe(device_t bus
, device_t child
, struct isa_pnp_id
*ids
)
1584 int result
, cid_count
, i
;
1585 uint32_t lid
, cids
[8];
1587 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1590 * ISA-style drivers attached to ACPI may persist and
1591 * probe manually if we return ENOENT. We never want
1592 * that to happen, so don't ever return it.
1596 /* Scan the supplied IDs for a match */
1597 lid
= acpi_isa_get_logicalid(child
);
1598 cid_count
= acpi_isa_get_compatid(child
, cids
, 8);
1599 while (ids
&& ids
->ip_id
) {
1600 if (lid
== ids
->ip_id
) {
1604 for (i
= 0; i
< cid_count
; i
++) {
1605 if (cids
[i
] == ids
->ip_id
) {
1614 if (result
== 0 && ids
->ip_desc
)
1615 device_set_desc(child
, ids
->ip_desc
);
1617 return_VALUE (result
);
1621 * Look for a MCFG table. If it is present, use the settings for
1622 * domain (segment) 0 to setup PCI config space access via the memory
1626 acpi_enable_pcie(void)
1628 ACPI_TABLE_HEADER
*hdr
;
1629 ACPI_MCFG_ALLOCATION
*alloc
, *end
;
1632 status
= AcpiGetTable(ACPI_SIG_MCFG
, 1, &hdr
);
1633 if (ACPI_FAILURE(status
))
1636 end
= (ACPI_MCFG_ALLOCATION
*)((char *)hdr
+ hdr
->Length
);
1637 alloc
= (ACPI_MCFG_ALLOCATION
*)((ACPI_TABLE_MCFG
*)hdr
+ 1);
1638 while (alloc
< end
) {
1639 if (alloc
->PciSegment
== 0) {
1640 pcie_cfgregopen(alloc
->Address
, alloc
->StartBusNumber
,
1641 alloc
->EndBusNumber
);
1649 * Scan all of the ACPI namespace and attach child devices.
1651 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1652 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1653 * However, in violation of the spec, some systems place their PCI link
1654 * devices in \, so we have to walk the whole namespace. We check the
1655 * type of namespace nodes, so this should be ok.
1658 acpi_probe_children(device_t bus
)
1663 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1666 * Scan the namespace and insert placeholders for all the devices that
1667 * we find. We also probe/attach any early devices.
1669 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1670 * we want to create nodes for all devices, not just those that are
1671 * currently present. (This assumes that we don't want to create/remove
1672 * devices as they appear, which might be smarter.)
1674 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "namespace scan\n"));
1675 AcpiWalkNamespace(ACPI_TYPE_ANY
, ACPI_ROOT_OBJECT
, 100,
1676 acpi_probe_child
, NULL
, bus
, NULL
);
1677 /* This gets us all the children that we added from the ACPI namespace. */
1678 device_get_children(bus
, &children
, &cnt
);
1680 /* Pre-allocate resources for our rman from any sysresource devices. */
1681 acpi_sysres_alloc(bus
);
1682 /* Create any static children by calling device identify methods. */
1683 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "device identify routines\n"));
1684 bus_generic_probe(bus
);
1686 /* Probe/attach all children, created staticly and from the namespace. */
1687 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "first bus_generic_attach\n"));
1688 bus_generic_attach_gpri(bus
, KOBJ_GPRI_ACPI
+2);
1689 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "second bus_generic_attach\n"));
1690 bus_generic_attach_gpri(bus
, KOBJ_GPRI_ACPI
+1);
1691 /* Re-check device presence for previously disabled devices. */
1692 acpi_reprobe_children(bus
, children
, cnt
);
1693 kfree(children
, M_TEMP
);
1694 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "third bus_generic_attach\n"));
1695 bus_generic_attach_gpri(bus
, KOBJ_GPRI_ACPI
);
1696 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "fourth bus_generic_attach\n"));
1697 bus_generic_attach_gpri(bus
, KOBJ_GPRI_ACPI
);
1700 * Some of these children may have attached others as part of their attach
1701 * process (eg. the root PCI bus driver), so rescan.
1703 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "fifth bus_generic_attach\n"));
1704 bus_generic_attach(bus
);
1706 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "sixth bus_generic_attach\n"));
1707 bus_generic_attach(bus
);
1709 /* Attach wake sysctls. */
1710 acpi_wake_sysctl_walk(bus
);
1712 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "done attaching children\n"));
1717 * Determine the probe order for a given device.
1720 acpi_probe_order(ACPI_HANDLE handle
, int *order
)
1722 ACPI_OBJECT_TYPE type
;
1725 * 1. I/O port and memory system resource holders
1726 * 2. Embedded controllers (to handle early accesses)
1727 * 3. PCI Link Devices
1730 AcpiGetType(handle
, &type
);
1731 if (acpi_MatchHid(handle
, "PNP0C01") || acpi_MatchHid(handle
, "PNP0C02"))
1733 else if (acpi_MatchHid(handle
, "PNP0C09"))
1735 else if (acpi_MatchHid(handle
, "PNP0C0F"))
1737 else if (type
== ACPI_TYPE_PROCESSOR
)
1742 * Flag a device as disabled, because it isn't present according to the
1743 * _STA method. We set the recheck instance-variable, to make sure that we
1744 * recheck the device presence at a later point.
1747 acpi_disable_not_present(device_t child
)
1749 device_disable(child
);
1750 acpi_set_recheck(child
, 1);
1754 * This rechecks the device presence for all the devices which were disabled
1755 * using acpi_disable_not_present().
1758 acpi_reprobe_children(device_t bus
, device_t
*children
, int cnt
)
1762 for (i
= 0; i
< cnt
; i
++) {
1763 device_t dev
= children
[i
];
1765 if (device_is_enabled(dev
))
1768 if (acpi_get_recheck(dev
)) {
1769 if (acpi_DeviceIsPresent(dev
)) {
1770 acpi_set_recheck(dev
, 0);
1773 * Currently we parse the resources for every
1774 * device at the first time, when we see
1775 * that it is present.
1777 acpi_parse_resources(dev
, acpi_get_handle(dev
),
1778 &acpi_res_parse_set
, NULL
);
1785 * Evaluate a child device and determine whether we might attach a device to
1789 acpi_probe_child(ACPI_HANDLE handle
, UINT32 level
, void *context
, void **status
)
1791 struct acpi_prw_data prw
;
1792 ACPI_OBJECT_TYPE type
;
1794 device_t bus
, child
;
1798 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1800 if (acpi_disabled("children"))
1801 return_ACPI_STATUS (AE_OK
);
1803 /* Skip this device if we think we'll have trouble with it. */
1804 if (acpi_avoid(handle
))
1805 return_ACPI_STATUS (AE_OK
);
1807 bus
= (device_t
)context
;
1808 if (ACPI_SUCCESS(AcpiGetType(handle
, &type
))) {
1809 handle_str
= acpi_name(handle
);
1811 case ACPI_TYPE_DEVICE
:
1813 * Since we scan from \, be sure to skip system scope objects.
1814 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1815 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
1816 * during the intialization and \_TZ_ is to support Notify() on it.
1818 if (strcmp(handle_str
, "\\_SB_") == 0 ||
1819 strcmp(handle_str
, "\\_TZ_") == 0)
1822 if (acpi_parse_prw(handle
, &prw
) == 0)
1823 AcpiSetupGpeForWake(handle
, prw
.gpe_handle
, prw
.gpe_bit
);
1826 case ACPI_TYPE_PROCESSOR
:
1827 case ACPI_TYPE_THERMAL
:
1828 case ACPI_TYPE_POWER
:
1830 * Create a placeholder device for this node. Sort the
1831 * placeholder so that the probe/attach passes will run
1832 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1833 * are reserved for special objects (i.e., system
1834 * resources). CPU devices have a very high order to
1835 * ensure they are probed after other devices.
1837 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "scanning '%s'\n", handle_str
));
1838 order
= level
* 10 + 100;
1839 acpi_probe_order(handle
, &order
);
1840 child
= BUS_ADD_CHILD(bus
, bus
, order
, NULL
, -1);
1844 /* Associate the handle with the device_t and vice versa. */
1845 acpi_set_handle(child
, handle
);
1846 AcpiAttachData(handle
, acpi_fake_objhandler
, child
);
1849 * Check that the device is present. If it's not present,
1850 * leave it disabled (so that we have a device_t attached to
1851 * the handle, but we don't probe it).
1853 * XXX PCI link devices sometimes report "present" but not
1854 * "functional" (i.e. if disabled). Go ahead and probe them
1855 * anyway since we may enable them later.
1857 if (type
== ACPI_TYPE_DEVICE
&& !acpi_DeviceIsPresent(child
)) {
1858 /* Never disable PCI link devices. */
1859 if (acpi_MatchHid(handle
, "PNP0C0F"))
1862 * Docking stations should remain enabled since the system
1863 * may be undocked at boot.
1865 if (ACPI_SUCCESS(AcpiGetHandle(handle
, "_DCK", &h
)))
1868 acpi_disable_not_present(child
);
1873 * Get the device's resource settings and attach them.
1874 * Note that if the device has _PRS but no _CRS, we need
1875 * to decide when it's appropriate to try to configure the
1876 * device. Ignore the return value here; it's OK for the
1877 * device not to have any resources.
1879 acpi_parse_resources(child
, handle
, &acpi_res_parse_set
, NULL
);
1884 return_ACPI_STATUS (AE_OK
);
1888 * AcpiAttachData() requires an object handler but never uses it. This is a
1889 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1892 acpi_fake_objhandler(ACPI_HANDLE h
, void *data
)
1897 acpi_shutdown_final(void *arg
, int howto
)
1899 struct acpi_softc
*sc
;
1903 * XXX Shutdown code should only run on the BSP (cpuid 0).
1904 * Some chipsets do not power off the system correctly if called from
1908 if ((howto
& RB_POWEROFF
) != 0) {
1909 status
= AcpiEnterSleepStatePrep(ACPI_STATE_S5
);
1910 if (ACPI_FAILURE(status
)) {
1911 device_printf(sc
->acpi_dev
, "AcpiEnterSleepStatePrep failed - %s\n",
1912 AcpiFormatException(status
));
1915 device_printf(sc
->acpi_dev
, "Powering system off\n");
1916 ACPI_DISABLE_IRQS();
1917 status
= AcpiEnterSleepState(ACPI_STATE_S5
);
1918 if (ACPI_FAILURE(status
)) {
1919 device_printf(sc
->acpi_dev
, "power-off failed - %s\n",
1920 AcpiFormatException(status
));
1923 device_printf(sc
->acpi_dev
, "power-off failed - timeout\n");
1925 } else if ((howto
& RB_HALT
) == 0 && sc
->acpi_handle_reboot
) {
1926 /* Reboot using the reset register. */
1927 status
= AcpiReset();
1928 if (ACPI_FAILURE(status
)) {
1929 if (status
!= AE_NOT_EXIST
)
1930 device_printf(sc
->acpi_dev
, "reset failed - %s\n",
1931 AcpiFormatException(status
));
1934 device_printf(sc
->acpi_dev
, "reset failed - timeout\n");
1936 } else if (sc
->acpi_do_disable
&& panicstr
== NULL
) {
1938 * Only disable ACPI if the user requested. On some systems, writing
1939 * the disable value to SMI_CMD hangs the system.
1941 device_printf(sc
->acpi_dev
, "Shutting down\n");
1947 acpi_enable_fixed_events(struct acpi_softc
*sc
)
1949 static int first_time
= 1;
1951 /* Enable and clear fixed events and install handlers. */
1952 if ((AcpiGbl_FADT
.Flags
& ACPI_FADT_POWER_BUTTON
) == 0) {
1953 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON
);
1954 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON
,
1955 acpi_event_power_button_sleep
, sc
);
1957 device_printf(sc
->acpi_dev
, "Power Button (fixed)\n");
1959 if ((AcpiGbl_FADT
.Flags
& ACPI_FADT_SLEEP_BUTTON
) == 0) {
1960 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON
);
1961 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON
,
1962 acpi_event_sleep_button_sleep
, sc
);
1964 device_printf(sc
->acpi_dev
, "Sleep Button (fixed)\n");
1971 * Returns true if the device is actually present and should
1972 * be attached to. This requires the present, enabled, UI-visible
1973 * and diagnostics-passed bits to be set.
1976 acpi_DeviceIsPresent(device_t dev
)
1982 h
= acpi_get_handle(dev
);
1985 status
= acpi_GetInteger(h
, "_STA", &s
);
1987 /* If no _STA method, must be present */
1988 if (ACPI_FAILURE(status
))
1989 return (status
== AE_NOT_FOUND
? TRUE
: FALSE
);
1991 return (ACPI_DEVICE_PRESENT(s
) ? TRUE
: FALSE
);
1995 * Returns true if the battery is actually present and inserted.
1998 acpi_BatteryIsPresent(device_t dev
)
2004 h
= acpi_get_handle(dev
);
2007 status
= acpi_GetInteger(h
, "_STA", &s
);
2009 /* If no _STA method, must be present */
2010 if (ACPI_FAILURE(status
))
2011 return (status
== AE_NOT_FOUND
? TRUE
: FALSE
);
2013 return (ACPI_BATTERY_PRESENT(s
) ? TRUE
: FALSE
);
2017 * Match a HID string against a handle
2020 acpi_MatchHid(ACPI_HANDLE h
, const char *hid
)
2022 ACPI_DEVICE_INFO
*devinfo
;
2026 if (hid
== NULL
|| h
== NULL
||
2027 ACPI_FAILURE(AcpiGetObjectInfo(h
, &devinfo
)))
2030 if ((devinfo
->Valid
& ACPI_VALID_HID
) != 0 &&
2031 strcmp(hid
, devinfo
->HardwareId
.String
) == 0)
2033 else if ((devinfo
->Valid
& ACPI_VALID_CID
) != 0) {
2034 for (i
= 0; i
< devinfo
->CompatibleIdList
.Count
; i
++) {
2035 if (strcmp(hid
, devinfo
->CompatibleIdList
.Ids
[i
].String
) == 0) {
2042 AcpiOsFree(devinfo
);
2047 * Match a UID string against a handle
2050 acpi_MatchUid(ACPI_HANDLE h
, const char *uid
)
2052 ACPI_DEVICE_INFO
*devinfo
;
2056 if (uid
== NULL
|| h
== NULL
||
2057 ACPI_FAILURE(AcpiGetObjectInfo(h
, &devinfo
)))
2060 if ((devinfo
->Valid
& ACPI_VALID_UID
) != 0 &&
2061 strcmp(uid
, devinfo
->UniqueId
.String
) == 0)
2064 AcpiOsFree(devinfo
);
2069 * Return the handle of a named object within our scope, ie. that of (parent)
2070 * or one if its parents.
2073 acpi_GetHandleInScope(ACPI_HANDLE parent
, char *path
, ACPI_HANDLE
*result
)
2078 /* Walk back up the tree to the root */
2080 status
= AcpiGetHandle(parent
, path
, &r
);
2081 if (ACPI_SUCCESS(status
)) {
2085 /* XXX Return error here? */
2086 if (status
!= AE_NOT_FOUND
)
2088 if (ACPI_FAILURE(AcpiGetParent(parent
, &r
)))
2089 return (AE_NOT_FOUND
);
2095 * Allocate a buffer with a preset data size.
2098 acpi_AllocBuffer(int size
)
2102 if ((buf
= kmalloc(size
+ sizeof(*buf
), M_ACPIDEV
, M_NOWAIT
)) == NULL
)
2105 buf
->Pointer
= (void *)(buf
+ 1);
2110 acpi_SetInteger(ACPI_HANDLE handle
, char *path
, UINT32 number
)
2113 ACPI_OBJECT_LIST args
;
2115 arg1
.Type
= ACPI_TYPE_INTEGER
;
2116 arg1
.Integer
.Value
= number
;
2118 args
.Pointer
= &arg1
;
2120 return (AcpiEvaluateObject(handle
, path
, &args
, NULL
));
2124 * Evaluate a path that should return an integer.
2127 acpi_GetInteger(ACPI_HANDLE handle
, char *path
, UINT32
*number
)
2134 handle
= ACPI_ROOT_OBJECT
;
2137 * Assume that what we've been pointed at is an Integer object, or
2138 * a method that will return an Integer.
2140 buf
.Pointer
= ¶m
;
2141 buf
.Length
= sizeof(param
);
2142 status
= AcpiEvaluateObject(handle
, path
, NULL
, &buf
);
2143 if (ACPI_SUCCESS(status
)) {
2144 if (param
.Type
== ACPI_TYPE_INTEGER
)
2145 *number
= param
.Integer
.Value
;
2151 * In some applications, a method that's expected to return an Integer
2152 * may instead return a Buffer (probably to simplify some internal
2153 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
2154 * convert it into an Integer as best we can.
2158 if (status
== AE_BUFFER_OVERFLOW
) {
2159 if ((buf
.Pointer
= AcpiOsAllocate(buf
.Length
)) == NULL
) {
2160 status
= AE_NO_MEMORY
;
2162 status
= AcpiEvaluateObject(handle
, path
, NULL
, &buf
);
2163 if (ACPI_SUCCESS(status
))
2164 status
= acpi_ConvertBufferToInteger(&buf
, number
);
2165 AcpiOsFree(buf
.Pointer
);
2172 acpi_ConvertBufferToInteger(ACPI_BUFFER
*bufp
, UINT32
*number
)
2178 p
= (ACPI_OBJECT
*)bufp
->Pointer
;
2179 if (p
->Type
== ACPI_TYPE_INTEGER
) {
2180 *number
= p
->Integer
.Value
;
2183 if (p
->Type
!= ACPI_TYPE_BUFFER
)
2185 if (p
->Buffer
.Length
> sizeof(int))
2186 return (AE_BAD_DATA
);
2189 val
= p
->Buffer
.Pointer
;
2190 for (i
= 0; i
< p
->Buffer
.Length
; i
++)
2191 *number
+= val
[i
] << (i
* 8);
2196 * Iterate over the elements of an a package object, calling the supplied
2197 * function for each element.
2199 * XXX possible enhancement might be to abort traversal on error.
2202 acpi_ForeachPackageObject(ACPI_OBJECT
*pkg
,
2203 void (*func
)(ACPI_OBJECT
*comp
, void *arg
), void *arg
)
2208 if (pkg
== NULL
|| pkg
->Type
!= ACPI_TYPE_PACKAGE
)
2209 return (AE_BAD_PARAMETER
);
2211 /* Iterate over components */
2213 comp
= pkg
->Package
.Elements
;
2214 for (; i
< pkg
->Package
.Count
; i
++, comp
++)
2221 * Find the (index)th resource object in a set.
2224 acpi_FindIndexedResource(ACPI_BUFFER
*buf
, int index
, ACPI_RESOURCE
**resp
)
2229 rp
= (ACPI_RESOURCE
*)buf
->Pointer
;
2233 if (rp
> (ACPI_RESOURCE
*)((uint8_t *)buf
->Pointer
+ buf
->Length
))
2234 return (AE_BAD_PARAMETER
);
2236 /* Check for terminator */
2237 if (rp
->Type
== ACPI_RESOURCE_TYPE_END_TAG
|| rp
->Length
== 0)
2238 return (AE_NOT_FOUND
);
2239 rp
= ACPI_NEXT_RESOURCE(rp
);
2248 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2250 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2251 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2252 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2255 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2258 acpi_AppendBufferResource(ACPI_BUFFER
*buf
, ACPI_RESOURCE
*res
)
2263 /* Initialise the buffer if necessary. */
2264 if (buf
->Pointer
== NULL
) {
2265 buf
->Length
= ACPI_INITIAL_RESOURCE_BUFFER_SIZE
;
2266 if ((buf
->Pointer
= AcpiOsAllocate(buf
->Length
)) == NULL
)
2267 return (AE_NO_MEMORY
);
2268 rp
= (ACPI_RESOURCE
*)buf
->Pointer
;
2269 rp
->Type
= ACPI_RESOURCE_TYPE_END_TAG
;
2270 rp
->Length
= ACPI_RS_SIZE_MIN
;
2276 * Scan the current buffer looking for the terminator.
2277 * This will either find the terminator or hit the end
2278 * of the buffer and return an error.
2280 rp
= (ACPI_RESOURCE
*)buf
->Pointer
;
2282 /* Range check, don't go outside the buffer */
2283 if (rp
>= (ACPI_RESOURCE
*)((uint8_t *)buf
->Pointer
+ buf
->Length
))
2284 return (AE_BAD_PARAMETER
);
2285 if (rp
->Type
== ACPI_RESOURCE_TYPE_END_TAG
|| rp
->Length
== 0)
2287 rp
= ACPI_NEXT_RESOURCE(rp
);
2291 * Check the size of the buffer and expand if required.
2294 * size of existing resources before terminator +
2295 * size of new resource and header +
2296 * size of terminator.
2298 * Note that this loop should really only run once, unless
2299 * for some reason we are stuffing a *really* huge resource.
2301 while ((((uint8_t *)rp
- (uint8_t *)buf
->Pointer
) +
2302 res
->Length
+ ACPI_RS_SIZE_NO_DATA
+
2303 ACPI_RS_SIZE_MIN
) >= buf
->Length
) {
2304 if ((newp
= AcpiOsAllocate(buf
->Length
* 2)) == NULL
)
2305 return (AE_NO_MEMORY
);
2306 bcopy(buf
->Pointer
, newp
, buf
->Length
);
2307 rp
= (ACPI_RESOURCE
*)((uint8_t *)newp
+
2308 ((uint8_t *)rp
- (uint8_t *)buf
->Pointer
));
2309 AcpiOsFree(buf
->Pointer
);
2310 buf
->Pointer
= newp
;
2311 buf
->Length
+= buf
->Length
;
2314 /* Insert the new resource. */
2315 bcopy(res
, rp
, res
->Length
+ ACPI_RS_SIZE_NO_DATA
);
2317 /* And add the terminator. */
2318 rp
= ACPI_NEXT_RESOURCE(rp
);
2319 rp
->Type
= ACPI_RESOURCE_TYPE_END_TAG
;
2320 rp
->Length
= ACPI_RS_SIZE_MIN
;
2326 * Set interrupt model.
2329 acpi_SetIntrModel(int model
)
2332 return (acpi_SetInteger(ACPI_ROOT_OBJECT
, "_PIC", model
));
2336 * DEPRECATED. This interface has serious deficiencies and will be
2339 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2340 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2343 acpi_SetSleepState(struct acpi_softc
*sc
, int state
)
2348 device_printf(sc
->acpi_dev
,
2349 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2352 return (acpi_EnterSleepState(sc
, state
));
2356 acpi_sleep_force(void *arg
)
2358 struct acpi_softc
*sc
;
2361 device_printf(sc
->acpi_dev
,
2362 "suspend request timed out, forcing sleep now\n");
2363 if (ACPI_FAILURE(acpi_EnterSleepState(sc
, sc
->acpi_next_sstate
)))
2364 device_printf(sc
->acpi_dev
, "force sleep state S%d failed\n",
2365 sc
->acpi_next_sstate
);
2369 * Request that the system enter the given suspend state. All /dev/apm
2370 * devices and devd(8) will be notified. Userland then has a chance to
2371 * save state and acknowledge the request. The system sleeps once all
2375 acpi_ReqSleepState(struct acpi_softc
*sc
, int state
)
2378 struct apm_clone_data
*clone
;
2381 if (state
< ACPI_STATE_S1
|| state
> ACPI_STATE_S5
)
2384 /* S5 (soft-off) should be entered directly with no waiting. */
2385 if (state
== ACPI_STATE_S5
) {
2386 if (ACPI_SUCCESS(acpi_EnterSleepState(sc
, state
)))
2392 /* This platform does not support acpi suspend/resume. */
2393 return (EOPNOTSUPP
);
2395 /* If a suspend request is already in progress, just return. */
2397 if (sc
->acpi_next_sstate
!= 0) {
2402 /* Record the pending state and notify all apm devices. */
2403 sc
->acpi_next_sstate
= state
;
2405 STAILQ_FOREACH(clone
, &sc
->apm_cdevs
, entries
) {
2406 clone
->notify_status
= APM_EV_NONE
;
2407 if ((clone
->flags
& ACPI_EVF_DEVD
) == 0) {
2408 KNOTE(&clone
->sel_read
.si_note
, 0);
2413 /* If devd(8) is not running, immediately enter the sleep state. */
2414 if (devctl_process_running() == FALSE
) {
2416 if (ACPI_SUCCESS(acpi_EnterSleepState(sc
, sc
->acpi_next_sstate
))) {
2423 /* Now notify devd(8) also. */
2424 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT
, state
);
2427 * Set a timeout to fire if userland doesn't ack the suspend request
2428 * in time. This way we still eventually go to sleep if we were
2429 * overheating or running low on battery, even if userland is hung.
2430 * We cancel this timeout once all userland acks are in or the
2431 * suspend request is aborted.
2433 callout_reset(&sc
->susp_force_to
, 10 * hz
, acpi_sleep_force
, sc
);
2440 * Acknowledge (or reject) a pending sleep state. The caller has
2441 * prepared for suspend and is now ready for it to proceed. If the
2442 * error argument is non-zero, it indicates suspend should be cancelled
2443 * and gives an errno value describing why. Once all votes are in,
2444 * we suspend the system.
2447 acpi_AckSleepState(struct apm_clone_data
*clone
, int error
)
2449 struct acpi_softc
*sc
;
2452 /* This platform does not support acpi suspend/resume. */
2453 return (EOPNOTSUPP
);
2455 /* If no pending sleep state, return an error. */
2457 sc
= clone
->acpi_sc
;
2458 if (sc
->acpi_next_sstate
== 0) {
2463 /* Caller wants to abort suspend process. */
2465 sc
->acpi_next_sstate
= 0;
2466 callout_stop(&sc
->susp_force_to
);
2467 device_printf(sc
->acpi_dev
,
2468 "listener on %s cancelled the pending suspend\n",
2469 devtoname(clone
->cdev
));
2475 * Mark this device as acking the suspend request. Then, walk through
2476 * all devices, seeing if they agree yet. We only count devices that
2477 * are writable since read-only devices couldn't ack the request.
2479 clone
->notify_status
= APM_EV_ACKED
;
2481 STAILQ_FOREACH(clone
, &sc
->apm_cdevs
, entries
) {
2482 if ((clone
->flags
& ACPI_EVF_WRITE
) != 0 &&
2483 clone
->notify_status
!= APM_EV_ACKED
) {
2489 /* If all devices have voted "yes", we will suspend now. */
2491 callout_stop(&sc
->susp_force_to
);
2495 if (ACPI_FAILURE(acpi_EnterSleepState(sc
, sc
->acpi_next_sstate
)))
2503 acpi_sleep_enable(void *arg
)
2505 ((struct acpi_softc
*)arg
)->acpi_sleep_disabled
= 0;
2508 enum acpi_sleep_state
{
2511 ACPI_SS_DEV_SUSPEND
,
2517 * Enter the desired system sleep state.
2519 * Currently we support S1-S5 but S4 is only S4BIOS
2522 acpi_EnterSleepState(struct acpi_softc
*sc
, int state
)
2527 enum acpi_sleep_state slp_state
;
2529 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__
, state
);
2531 /* Re-entry once we're suspending is not allowed. */
2534 if (sc
->acpi_sleep_disabled
) {
2536 device_printf(sc
->acpi_dev
,
2537 "suspend request ignored (not ready yet)\n");
2540 sc
->acpi_sleep_disabled
= 1;
2544 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2545 * drivers need this.
2549 slp_state
= ACPI_SS_NONE
;
2555 status
= AcpiGetSleepTypeData(state
, &TypeA
, &TypeB
);
2556 if (status
== AE_NOT_FOUND
) {
2557 device_printf(sc
->acpi_dev
,
2558 "Sleep state S%d not supported by BIOS\n", state
);
2560 } else if (ACPI_FAILURE(status
)) {
2561 device_printf(sc
->acpi_dev
, "AcpiGetSleepTypeData failed - %s\n",
2562 AcpiFormatException(status
));
2566 sc
->acpi_sstate
= state
;
2568 /* Enable any GPEs as appropriate and requested by the user. */
2569 acpi_wake_prep_walk(state
);
2570 slp_state
= ACPI_SS_GPE_SET
;
2573 * Inform all devices that we are going to sleep. If at least one
2574 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2576 * XXX Note that a better two-pass approach with a 'veto' pass
2577 * followed by a "real thing" pass would be better, but the current
2578 * bus interface does not provide for this.
2580 if (DEVICE_SUSPEND(root_bus
) != 0) {
2581 device_printf(sc
->acpi_dev
, "device_suspend failed\n");
2584 slp_state
= ACPI_SS_DEV_SUSPEND
;
2586 /* If testing device suspend only, back out of everything here. */
2587 if (acpi_susp_bounce
)
2590 status
= AcpiEnterSleepStatePrep(state
);
2591 if (ACPI_FAILURE(status
)) {
2592 device_printf(sc
->acpi_dev
, "AcpiEnterSleepStatePrep failed - %s\n",
2593 AcpiFormatException(status
));
2596 slp_state
= ACPI_SS_SLP_PREP
;
2598 if (sc
->acpi_sleep_delay
> 0)
2599 DELAY(sc
->acpi_sleep_delay
* 1000000);
2601 if (state
!= ACPI_STATE_S1
) {
2602 acpi_sleep_machdep(sc
, state
);
2604 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2605 if (state
== ACPI_STATE_S4
)
2608 ACPI_DISABLE_IRQS();
2609 status
= AcpiEnterSleepState(state
);
2610 if (ACPI_FAILURE(status
)) {
2611 device_printf(sc
->acpi_dev
, "AcpiEnterSleepState failed - %s\n",
2612 AcpiFormatException(status
));
2616 slp_state
= ACPI_SS_SLEPT
;
2620 * Shut down cleanly and power off. This will call us back through the
2621 * shutdown handlers.
2623 shutdown_nice(RB_POWEROFF
);
2627 status
= AE_BAD_PARAMETER
;
2632 * Back out state according to how far along we got in the suspend
2633 * process. This handles both the error and success cases.
2635 sc
->acpi_next_sstate
= 0;
2636 if (slp_state
>= ACPI_SS_GPE_SET
) {
2637 acpi_wake_prep_walk(state
);
2638 sc
->acpi_sstate
= ACPI_STATE_S0
;
2640 if (slp_state
>= ACPI_SS_SLP_PREP
)
2641 AcpiLeaveSleepState(state
);
2642 if (slp_state
>= ACPI_SS_DEV_SUSPEND
)
2643 DEVICE_RESUME(root_bus
);
2644 if (slp_state
>= ACPI_SS_SLEPT
)
2645 acpi_enable_fixed_events(sc
);
2647 /* Allow another sleep request after a while. */
2648 /* XXX: needs timeout */
2649 if (state
!= ACPI_STATE_S5
)
2650 acpi_sleep_enable(sc
);
2652 /* Run /etc/rc.resume after we are back. */
2653 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT
, state
);
2657 return_ACPI_STATUS (status
);
2660 /* Enable or disable the device's GPE. */
2662 acpi_wake_set_enable(device_t dev
, int enable
)
2664 struct acpi_prw_data prw
;
2668 /* Make sure the device supports waking the system and get the GPE. */
2669 if (acpi_parse_prw(acpi_get_handle(dev
), &prw
) != 0)
2672 flags
= acpi_get_flags(dev
);
2674 status
= AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
,
2676 if (ACPI_FAILURE(status
)) {
2677 device_printf(dev
, "enable wake failed\n");
2680 acpi_set_flags(dev
, flags
| ACPI_FLAG_WAKE_ENABLED
);
2682 status
= AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
,
2684 if (ACPI_FAILURE(status
)) {
2685 device_printf(dev
, "disable wake failed\n");
2688 acpi_set_flags(dev
, flags
& ~ACPI_FLAG_WAKE_ENABLED
);
2695 acpi_wake_sleep_prep(ACPI_HANDLE handle
, int sstate
)
2697 struct acpi_prw_data prw
;
2700 /* Check that this is a wake-capable device and get its GPE. */
2701 if (acpi_parse_prw(handle
, &prw
) != 0)
2703 dev
= acpi_get_device(handle
);
2706 * The destination sleep state must be less than (i.e., higher power)
2707 * or equal to the value specified by _PRW. If this GPE cannot be
2708 * enabled for the next sleep state, then disable it. If it can and
2709 * the user requested it be enabled, turn on any required power resources
2712 if (sstate
> prw
.lowest_wake
) {
2713 AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
, ACPI_GPE_DISABLE
);
2715 device_printf(dev
, "wake_prep disabled wake for %s (S%d)\n",
2716 acpi_name(handle
), sstate
);
2717 } else if (dev
&& (acpi_get_flags(dev
) & ACPI_FLAG_WAKE_ENABLED
) != 0) {
2718 acpi_pwr_wake_enable(handle
, 1);
2719 acpi_SetInteger(handle
, "_PSW", 1);
2721 device_printf(dev
, "wake_prep enabled for %s (S%d)\n",
2722 acpi_name(handle
), sstate
);
2729 acpi_wake_run_prep(ACPI_HANDLE handle
, int sstate
)
2731 struct acpi_prw_data prw
;
2735 * Check that this is a wake-capable device and get its GPE. Return
2736 * now if the user didn't enable this device for wake.
2738 if (acpi_parse_prw(handle
, &prw
) != 0)
2740 dev
= acpi_get_device(handle
);
2741 if (dev
== NULL
|| (acpi_get_flags(dev
) & ACPI_FLAG_WAKE_ENABLED
) == 0)
2745 * If this GPE couldn't be enabled for the previous sleep state, it was
2746 * disabled before going to sleep so re-enable it. If it was enabled,
2747 * clear _PSW and turn off any power resources it used.
2749 if (sstate
> prw
.lowest_wake
) {
2750 AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
, ACPI_GPE_ENABLE
);
2752 device_printf(dev
, "run_prep re-enabled %s\n", acpi_name(handle
));
2754 acpi_SetInteger(handle
, "_PSW", 0);
2755 acpi_pwr_wake_enable(handle
, 0);
2757 device_printf(dev
, "run_prep cleaned up for %s\n",
2765 acpi_wake_prep(ACPI_HANDLE handle
, UINT32 level
, void *context
, void **status
)
2769 /* If suspending, run the sleep prep function, otherwise wake. */
2770 sstate
= *(int *)context
;
2771 if (AcpiGbl_SystemAwakeAndRunning
)
2772 acpi_wake_sleep_prep(handle
, sstate
);
2774 acpi_wake_run_prep(handle
, sstate
);
2778 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2780 acpi_wake_prep_walk(int sstate
)
2782 ACPI_HANDLE sb_handle
;
2784 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT
, "\\_SB_", &sb_handle
))) {
2785 AcpiWalkNamespace(ACPI_TYPE_DEVICE
, sb_handle
, 100,
2786 acpi_wake_prep
, NULL
, &sstate
, NULL
);
2791 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2793 acpi_wake_sysctl_walk(device_t dev
)
2796 int error
, i
, numdevs
;
2801 error
= device_get_children(dev
, &devlist
, &numdevs
);
2802 if (error
!= 0 || numdevs
== 0) {
2804 kfree(devlist
, M_TEMP
);
2807 for (i
= 0; i
< numdevs
; i
++) {
2809 acpi_wake_sysctl_walk(child
);
2810 if (!device_is_attached(child
))
2812 status
= AcpiEvaluateObject(acpi_get_handle(child
), "_PRW", NULL
, NULL
);
2813 if (ACPI_SUCCESS(status
)) {
2814 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child
),
2815 SYSCTL_CHILDREN(device_get_sysctl_tree(child
)), OID_AUTO
,
2816 "wake", CTLTYPE_INT
| CTLFLAG_RW
, child
, 0,
2817 acpi_wake_set_sysctl
, "I", "Device set to wake the system");
2820 kfree(devlist
, M_TEMP
);
2827 /* Enable or disable wake from userland. */
2829 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS
)
2834 dev
= (device_t
)arg1
;
2835 enable
= (acpi_get_flags(dev
) & ACPI_FLAG_WAKE_ENABLED
) ? 1 : 0;
2837 error
= sysctl_handle_int(oidp
, &enable
, 0, req
);
2838 if (error
!= 0 || req
->newptr
== NULL
)
2840 if (enable
!= 0 && enable
!= 1)
2843 return (acpi_wake_set_enable(dev
, enable
));
2847 /* Parse a device's _PRW into a structure. */
2849 acpi_parse_prw(ACPI_HANDLE h
, struct acpi_prw_data
*prw
)
2852 ACPI_BUFFER prw_buffer
;
2853 ACPI_OBJECT
*res
, *res2
;
2854 int error
, i
, power_count
;
2856 if (h
== NULL
|| prw
== NULL
)
2860 * The _PRW object (7.2.9) is only required for devices that have the
2861 * ability to wake the system from a sleeping state.
2864 prw_buffer
.Pointer
= NULL
;
2865 prw_buffer
.Length
= ACPI_ALLOCATE_BUFFER
;
2866 status
= AcpiEvaluateObject(h
, "_PRW", NULL
, &prw_buffer
);
2867 if (ACPI_FAILURE(status
))
2869 res
= (ACPI_OBJECT
*)prw_buffer
.Pointer
;
2872 if (!ACPI_PKG_VALID(res
, 2))
2876 * Element 1 of the _PRW object:
2877 * The lowest power system sleeping state that can be entered while still
2878 * providing wake functionality. The sleeping state being entered must
2879 * be less than (i.e., higher power) or equal to this value.
2881 if (acpi_PkgInt32(res
, 1, &prw
->lowest_wake
) != 0)
2885 * Element 0 of the _PRW object:
2887 switch (res
->Package
.Elements
[0].Type
) {
2888 case ACPI_TYPE_INTEGER
:
2890 * If the data type of this package element is numeric, then this
2891 * _PRW package element is the bit index in the GPEx_EN, in the
2892 * GPE blocks described in the FADT, of the enable bit that is
2893 * enabled for the wake event.
2895 prw
->gpe_handle
= NULL
;
2896 prw
->gpe_bit
= res
->Package
.Elements
[0].Integer
.Value
;
2899 case ACPI_TYPE_PACKAGE
:
2901 * If the data type of this package element is a package, then this
2902 * _PRW package element is itself a package containing two
2903 * elements. The first is an object reference to the GPE Block
2904 * device that contains the GPE that will be triggered by the wake
2905 * event. The second element is numeric and it contains the bit
2906 * index in the GPEx_EN, in the GPE Block referenced by the
2907 * first element in the package, of the enable bit that is enabled for
2910 * For example, if this field is a package then it is of the form:
2911 * Package() {\_SB.PCI0.ISA.GPE, 2}
2913 res2
= &res
->Package
.Elements
[0];
2914 if (!ACPI_PKG_VALID(res2
, 2))
2916 prw
->gpe_handle
= acpi_GetReference(NULL
, &res2
->Package
.Elements
[0]);
2917 if (prw
->gpe_handle
== NULL
)
2919 if (acpi_PkgInt32(res2
, 1, &prw
->gpe_bit
) != 0)
2927 /* Elements 2 to N of the _PRW object are power resources. */
2928 power_count
= res
->Package
.Count
- 2;
2929 if (power_count
> ACPI_PRW_MAX_POWERRES
) {
2930 kprintf("ACPI device %s has too many power resources\n", acpi_name(h
));
2933 prw
->power_res_count
= power_count
;
2934 for (i
= 0; i
< power_count
; i
++)
2935 prw
->power_res
[i
] = res
->Package
.Elements
[i
];
2938 if (prw_buffer
.Pointer
!= NULL
)
2939 AcpiOsFree(prw_buffer
.Pointer
);
2944 * ACPI Event Handlers
2947 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2950 acpi_system_eventhandler_sleep(void *arg
, int state
)
2952 struct acpi_softc
*sc
;
2955 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__
, state
);
2959 /* Check if button action is disabled. */
2960 if (state
== ACPI_S_STATES_MAX
+ 1)
2963 /* Request that the system prepare to enter the given suspend state. */
2964 ret
= acpi_ReqSleepState((struct acpi_softc
*)arg
, state
);
2966 device_printf(sc
->acpi_dev
,
2967 "request to enter state S%d failed (err %d)\n", state
, ret
);
2973 acpi_system_eventhandler_wakeup(void *arg
, int state
)
2976 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__
, state
);
2978 /* Currently, nothing to do for wakeup. */
2984 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2987 acpi_event_power_button_sleep(void *context
)
2989 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
2991 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
2993 EVENTHANDLER_INVOKE(acpi_sleep_event
, sc
->acpi_power_button_sx
);
2995 return_VALUE (ACPI_INTERRUPT_HANDLED
);
2999 acpi_event_power_button_wake(void *context
)
3001 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
3003 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
3005 EVENTHANDLER_INVOKE(acpi_wakeup_event
, sc
->acpi_power_button_sx
);
3007 return_VALUE (ACPI_INTERRUPT_HANDLED
);
3011 acpi_event_sleep_button_sleep(void *context
)
3013 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
3015 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
3017 EVENTHANDLER_INVOKE(acpi_sleep_event
, sc
->acpi_sleep_button_sx
);
3019 return_VALUE (ACPI_INTERRUPT_HANDLED
);
3023 acpi_event_sleep_button_wake(void *context
)
3025 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
3027 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
3029 EVENTHANDLER_INVOKE(acpi_wakeup_event
, sc
->acpi_sleep_button_sx
);
3031 return_VALUE (ACPI_INTERRUPT_HANDLED
);
3035 * XXX This static buffer is suboptimal. There is no locking so only
3036 * use this for single-threaded callers.
3039 acpi_name(ACPI_HANDLE handle
)
3042 static char data
[256];
3044 buf
.Length
= sizeof(data
);
3047 if (handle
&& ACPI_SUCCESS(AcpiGetName(handle
, ACPI_FULL_PATHNAME
, &buf
)))
3049 return ("(unknown)");
3053 * Debugging/bug-avoidance. Avoid trying to fetch info on various
3054 * parts of the namespace.
3057 acpi_avoid(ACPI_HANDLE handle
)
3059 char *cp
, *env
, *np
;
3062 np
= acpi_name(handle
);
3065 if ((env
= kgetenv("debug.acpi.avoid")) == NULL
)
3068 /* Scan the avoid list checking for a match */
3071 while (*cp
!= 0 && isspace(*cp
))
3076 while (cp
[len
] != 0 && !isspace(cp
[len
]))
3078 if (!strncmp(cp
, np
, len
)) {
3090 * Debugging/bug-avoidance. Disable ACPI subsystem components.
3093 acpi_disabled(char *subsys
)
3098 if ((env
= kgetenv("debug.acpi.disabled")) == NULL
)
3100 if (strcmp(env
, "all") == 0) {
3105 /* Scan the disable list, checking for a match. */
3108 while (*cp
!= '\0' && isspace(*cp
))
3113 while (cp
[len
] != '\0' && !isspace(cp
[len
]))
3115 if (strncmp(cp
, subsys
, len
) == 0) {
3127 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
3128 * components are enabled by default. The ones that are not have to be
3129 * enabled via debug.acpi.enabled.
3132 acpi_enabled(char *subsys
)
3137 if ((env
= kgetenv("debug.acpi.enabled")) == NULL
)
3139 if (strcmp(env
, "all") == 0) {
3144 /* Scan the enable list, checking for a match. */
3147 while (*cp
!= '\0' && isspace(*cp
))
3152 while (cp
[len
] != '\0' && !isspace(cp
[len
]))
3154 if (strncmp(cp
, subsys
, len
) == 0) {
3166 * Control interface.
3168 * We multiplex ioctls for all participating ACPI devices here. Individual
3169 * drivers wanting to be accessible via /dev/acpi should use the
3170 * register/deregister interface to make their handlers visible.
3172 struct acpi_ioctl_hook
3174 TAILQ_ENTRY(acpi_ioctl_hook
) link
;
3180 static TAILQ_HEAD(,acpi_ioctl_hook
) acpi_ioctl_hooks
;
3181 static int acpi_ioctl_hooks_initted
;
3184 acpi_register_ioctl(u_long cmd
, acpi_ioctl_fn fn
, void *arg
)
3186 struct acpi_ioctl_hook
*hp
;
3188 if ((hp
= kmalloc(sizeof(*hp
), M_ACPIDEV
, M_NOWAIT
)) == NULL
)
3195 if (acpi_ioctl_hooks_initted
== 0) {
3196 TAILQ_INIT(&acpi_ioctl_hooks
);
3197 acpi_ioctl_hooks_initted
= 1;
3199 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks
, hp
, link
);
3206 acpi_deregister_ioctl(u_long cmd
, acpi_ioctl_fn fn
)
3208 struct acpi_ioctl_hook
*hp
;
3211 TAILQ_FOREACH(hp
, &acpi_ioctl_hooks
, link
)
3212 if (hp
->cmd
== cmd
&& hp
->fn
== fn
)
3216 TAILQ_REMOVE(&acpi_ioctl_hooks
, hp
, link
);
3217 kfree(hp
, M_ACPIDEV
);
3223 acpiopen(struct dev_open_args
*ap
)
3229 acpiclose(struct dev_close_args
*ap
)
3235 acpiioctl(struct dev_ioctl_args
*ap
)
3237 struct acpi_softc
*sc
;
3238 struct acpi_ioctl_hook
*hp
;
3243 sc
= ap
->a_head
.a_dev
->si_drv1
;
3246 * Scan the list of registered ioctls, looking for handlers.
3248 lwkt_gettoken(&acpi_token
);
3250 if (acpi_ioctl_hooks_initted
) {
3251 TAILQ_FOREACH(hp
, &acpi_ioctl_hooks
, link
) {
3252 if (hp
->cmd
== ap
->a_cmd
)
3258 error
= hp
->fn(ap
->a_cmd
, ap
->a_data
, hp
->arg
);
3259 lwkt_reltoken(&acpi_token
);
3264 * Core ioctls are not permitted for non-writable user.
3265 * Currently, other ioctls just fetch information.
3266 * Not changing system behavior.
3268 if ((ap
->a_fflag
& FWRITE
) == 0) {
3269 lwkt_reltoken(&acpi_token
);
3273 /* Core system ioctls. */
3274 switch (ap
->a_cmd
) {
3275 case ACPIIO_REQSLPSTATE
:
3276 state
= *(int *)ap
->a_data
;
3277 if (state
!= ACPI_STATE_S5
)
3278 error
= acpi_ReqSleepState(sc
, state
);
3280 device_printf(sc
->acpi_dev
,
3281 "power off via acpi ioctl not supported\n");
3285 case ACPIIO_ACKSLPSTATE
:
3288 error
= *(int *)ap
->a_data
;
3289 error
= acpi_AckSleepState(sc
->acpi_clone
, error
);
3292 case ACPIIO_SETSLPSTATE
: /* DEPRECATED */
3294 state
= *(int *)ap
->a_data
;
3295 if (state
>= ACPI_STATE_S0
&& state
<= ACPI_S_STATES_MAX
)
3296 if (ACPI_SUCCESS(acpi_SetSleepState(sc
, state
)))
3299 case ACPIIO_DO_MCALL
:
3300 if (acpi_allow_mcall
== 1) {
3301 struct acpi_mcall_ioctl_arg
*params
;
3302 ACPI_BUFFER result
= { ACPI_ALLOCATE_BUFFER
, NULL
};
3303 ACPI_OBJECT
*resobj
;
3306 params
= (struct acpi_mcall_ioctl_arg
*)ap
->a_data
;
3307 params
->retval
= AcpiEvaluateObject(NULL
, params
->path
,
3308 ¶ms
->args
, &result
);
3309 if (ACPI_SUCCESS(params
->retval
) && result
.Pointer
!= NULL
&&
3310 params
->result
.Pointer
!= NULL
) {
3311 params
->result
.Length
= min(params
->result
.Length
,
3313 copyout(result
.Pointer
, params
->result
.Pointer
,
3314 params
->result
.Length
);
3315 params
->reslen
= result
.Length
;
3316 if (result
.Length
>= sizeof(ACPI_OBJECT
)) {
3317 resobj
= (ACPI_OBJECT
*)params
->result
.Pointer
;
3318 switch (resobj
->Type
) {
3319 case ACPI_TYPE_STRING
:
3320 resobj
->String
.Pointer
= (char *)
3321 ((UINT8
*)(resobj
->String
.Pointer
) -
3322 (UINT8
*)result
.Pointer
+
3325 case ACPI_TYPE_BUFFER
:
3326 resobj
->Buffer
.Pointer
-= (UINT8
*)result
.Pointer
-
3333 if (result
.Pointer
!= NULL
)
3334 AcpiOsFree(result
.Pointer
);
3336 device_printf(sc
->acpi_dev
,
3337 "debug.acpi.allow_method_calls must be set\n");
3345 lwkt_reltoken(&acpi_token
);
3351 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
)
3355 UINT8 state
, TypeA
, TypeB
;
3357 sbuf_new(&sb
, NULL
, 32, SBUF_AUTOEXTEND
);
3358 for (state
= ACPI_STATE_S1
; state
< ACPI_S_STATES_MAX
+ 1; state
++)
3359 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state
, &TypeA
, &TypeB
)))
3360 sbuf_printf(&sb
, "S%d ", state
);
3363 error
= sysctl_handle_string(oidp
, sbuf_data(&sb
), sbuf_len(&sb
), req
);
3369 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
)
3371 char sleep_state
[10];
3373 u_int new_state
, old_state
;
3375 old_state
= *(u_int
*)oidp
->oid_arg1
;
3376 if (old_state
> ACPI_S_STATES_MAX
+ 1)
3377 strlcpy(sleep_state
, "unknown", sizeof(sleep_state
));
3379 strlcpy(sleep_state
, sleep_state_names
[old_state
], sizeof(sleep_state
));
3380 error
= sysctl_handle_string(oidp
, sleep_state
, sizeof(sleep_state
), req
);
3381 if (error
== 0 && req
->newptr
!= NULL
) {
3382 new_state
= ACPI_STATE_S0
;
3383 for (; new_state
<= ACPI_S_STATES_MAX
+ 1; new_state
++)
3384 if (strcmp(sleep_state
, sleep_state_names
[new_state
]) == 0)
3386 if (new_state
<= ACPI_S_STATES_MAX
+ 1) {
3387 if (new_state
!= old_state
)
3388 *(u_int
*)oidp
->oid_arg1
= new_state
;
3396 /* Inform devctl(4) when we receive a Notify. */
3398 acpi_UserNotify(const char *subsystem
, ACPI_HANDLE h
, uint8_t notify
)
3400 char notify_buf
[16];
3401 ACPI_BUFFER handle_buf
;
3404 if (subsystem
== NULL
)
3407 handle_buf
.Pointer
= NULL
;
3408 handle_buf
.Length
= ACPI_ALLOCATE_BUFFER
;
3409 status
= AcpiNsHandleToPathname(h
, &handle_buf
, FALSE
);
3410 if (ACPI_FAILURE(status
))
3412 ksnprintf(notify_buf
, sizeof(notify_buf
), "notify=0x%02x", notify
);
3413 devctl_notify("ACPI", subsystem
, handle_buf
.Pointer
, notify_buf
);
3414 AcpiOsFree(handle_buf
.Pointer
);
3419 * Support for parsing debug options from the kernel environment.
3421 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3422 * by specifying the names of the bits in the debug.acpi.layer and
3423 * debug.acpi.level environment variables. Bits may be unset by
3424 * prefixing the bit name with !.
3432 static struct debugtag dbg_layer
[] = {
3433 {"ACPI_UTILITIES", ACPI_UTILITIES
},
3434 {"ACPI_HARDWARE", ACPI_HARDWARE
},
3435 {"ACPI_EVENTS", ACPI_EVENTS
},
3436 {"ACPI_TABLES", ACPI_TABLES
},
3437 {"ACPI_NAMESPACE", ACPI_NAMESPACE
},
3438 {"ACPI_PARSER", ACPI_PARSER
},
3439 {"ACPI_DISPATCHER", ACPI_DISPATCHER
},
3440 {"ACPI_EXECUTER", ACPI_EXECUTER
},
3441 {"ACPI_RESOURCES", ACPI_RESOURCES
},
3442 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER
},
3443 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES
},
3444 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER
},
3445 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS
},
3447 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER
},
3448 {"ACPI_BATTERY", ACPI_BATTERY
},
3449 {"ACPI_BUS", ACPI_BUS
},
3450 {"ACPI_BUTTON", ACPI_BUTTON
},
3451 {"ACPI_EC", ACPI_EC
},
3452 {"ACPI_FAN", ACPI_FAN
},
3453 {"ACPI_POWERRES", ACPI_POWERRES
},
3454 {"ACPI_PROCESSOR", ACPI_PROCESSOR
},
3455 {"ACPI_THERMAL", ACPI_THERMAL
},
3456 {"ACPI_TIMER", ACPI_TIMER
},
3457 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS
},
3461 static struct debugtag dbg_level
[] = {
3462 {"ACPI_LV_INIT", ACPI_LV_INIT
},
3463 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT
},
3464 {"ACPI_LV_INFO", ACPI_LV_INFO
},
3465 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR
},
3466 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS
},
3468 /* Trace verbosity level 1 [Standard Trace Level] */
3469 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES
},
3470 {"ACPI_LV_PARSE", ACPI_LV_PARSE
},
3471 {"ACPI_LV_LOAD", ACPI_LV_LOAD
},
3472 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH
},
3473 {"ACPI_LV_EXEC", ACPI_LV_EXEC
},
3474 {"ACPI_LV_NAMES", ACPI_LV_NAMES
},
3475 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION
},
3476 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD
},
3477 {"ACPI_LV_TABLES", ACPI_LV_TABLES
},
3478 {"ACPI_LV_VALUES", ACPI_LV_VALUES
},
3479 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS
},
3480 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES
},
3481 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS
},
3482 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE
},
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);