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/ioccom.h>
42 #include <sys/reboot.h>
43 #include <sys/sysctl.h>
44 #include <sys/ctype.h>
45 #include <sys/linker.h>
46 #include <sys/power.h>
48 #include <sys/device.h>
49 #include <sys/spinlock.h>
50 #include <sys/spinlock2.h>
53 #include <bus/isa/isavar.h>
54 #include <bus/isa/pnpvar.h>
57 #include <dev/acpica5/acpivar.h>
58 #include <dev/acpica5/acpiio.h>
64 #include <bus/pci/pci_cfgreg.h>
65 #include <bus/pci/pcivar.h>
66 #include <bus/pci/pci_private.h>
68 #include <vm/vm_param.h>
70 MALLOC_DEFINE(M_ACPIDEV
, "acpidev", "ACPI devices");
72 #define GIANT_REQUIRED
75 /* Hooks for the ACPI CA debugging infrastructure */
76 #define _COMPONENT ACPI_BUS
77 ACPI_MODULE_NAME("ACPI")
79 static d_open_t acpiopen
;
80 static d_close_t acpiclose
;
81 static d_ioctl_t acpiioctl
;
83 static struct dev_ops acpi_ops
= {
90 /* Global mutex for locking access to the ACPI subsystem. */
91 struct lock acpi_lock
;
92 /* Bitmap of device quirks. */
95 static int acpi_modevent(struct module
*mod
, int event
, void *junk
);
96 static void acpi_identify(driver_t
*driver
, device_t parent
);
97 static int acpi_probe(device_t dev
);
98 static int acpi_attach(device_t dev
);
99 static int acpi_suspend(device_t dev
);
100 static int acpi_resume(device_t dev
);
101 static int acpi_shutdown(device_t dev
);
102 static device_t
acpi_add_child(device_t bus
, device_t parent
, int order
, const char *name
,
104 static int acpi_print_child(device_t bus
, device_t child
);
105 static void acpi_probe_nomatch(device_t bus
, device_t child
);
106 static void acpi_driver_added(device_t dev
, driver_t
*driver
);
107 static int acpi_read_ivar(device_t dev
, device_t child
, int index
,
109 static int acpi_write_ivar(device_t dev
, device_t child
, int index
,
111 static struct resource_list
*acpi_get_rlist(device_t dev
, device_t child
);
112 static int acpi_sysres_alloc(device_t dev
);
113 static struct resource
*acpi_alloc_resource(device_t bus
, device_t child
,
114 int type
, int *rid
, u_long start
, u_long end
,
115 u_long count
, u_int flags
);
116 static int acpi_release_resource(device_t bus
, device_t child
, int type
,
117 int rid
, struct resource
*r
);
118 static void acpi_delete_resource(device_t bus
, device_t child
, int type
,
120 static uint32_t acpi_isa_get_logicalid(device_t dev
);
121 static int acpi_isa_get_compatid(device_t dev
, uint32_t *cids
, int count
);
122 static char *acpi_device_id_probe(device_t bus
, device_t dev
, char **ids
);
123 static ACPI_STATUS
acpi_device_eval_obj(device_t bus
, device_t dev
,
124 ACPI_STRING pathname
, ACPI_OBJECT_LIST
*parameters
,
126 static int acpi_device_pwr_for_sleep(device_t bus
, device_t dev
,
128 static ACPI_STATUS
acpi_device_scan_cb(ACPI_HANDLE h
, UINT32 level
,
129 void *context
, void **retval
);
130 static ACPI_STATUS
acpi_device_scan_children(device_t bus
, device_t dev
,
131 int max_depth
, acpi_scan_cb_t user_fn
, void *arg
);
132 static int acpi_set_powerstate_method(device_t bus
, device_t child
,
134 static int acpi_isa_pnp_probe(device_t bus
, device_t child
,
135 struct isa_pnp_id
*ids
);
136 static void acpi_probe_children(device_t bus
);
137 static void acpi_probe_order(ACPI_HANDLE handle
, int *order
);
138 static ACPI_STATUS
acpi_probe_child(ACPI_HANDLE handle
, UINT32 level
,
139 void *context
, void **status
);
140 static ACPI_STATUS
acpi_EnterSleepState(struct acpi_softc
*sc
, int state
);
141 static void acpi_shutdown_final(void *arg
, int howto
);
142 static void acpi_enable_fixed_events(struct acpi_softc
*sc
);
143 static int acpi_wake_sleep_prep(ACPI_HANDLE handle
, int sstate
);
144 static int acpi_wake_run_prep(ACPI_HANDLE handle
, int sstate
);
145 static int acpi_wake_prep_walk(int sstate
);
146 static int acpi_wake_sysctl_walk(device_t dev
);
148 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS
);
150 static void acpi_system_eventhandler_sleep(void *arg
, int state
);
151 static void acpi_system_eventhandler_wakeup(void *arg
, int state
);
152 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
);
153 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
);
154 static int acpi_pm_func(u_long cmd
, void *arg
, ...);
155 static int acpi_child_location_str_method(device_t acdev
, device_t child
,
156 char *buf
, size_t buflen
);
157 static int acpi_child_pnpinfo_str_method(device_t acdev
, device_t child
,
158 char *buf
, size_t buflen
);
159 static void acpi_enable_pcie(void);
161 static device_method_t acpi_methods
[] = {
162 /* Device interface */
163 DEVMETHOD(device_identify
, acpi_identify
),
164 DEVMETHOD(device_probe
, acpi_probe
),
165 DEVMETHOD(device_attach
, acpi_attach
),
166 DEVMETHOD(device_shutdown
, acpi_shutdown
),
167 DEVMETHOD(device_detach
, bus_generic_detach
),
168 DEVMETHOD(device_suspend
, acpi_suspend
),
169 DEVMETHOD(device_resume
, acpi_resume
),
172 DEVMETHOD(bus_add_child
, acpi_add_child
),
173 DEVMETHOD(bus_print_child
, acpi_print_child
),
174 DEVMETHOD(bus_probe_nomatch
, acpi_probe_nomatch
),
175 DEVMETHOD(bus_driver_added
, acpi_driver_added
),
176 DEVMETHOD(bus_read_ivar
, acpi_read_ivar
),
177 DEVMETHOD(bus_write_ivar
, acpi_write_ivar
),
178 DEVMETHOD(bus_get_resource_list
, acpi_get_rlist
),
179 DEVMETHOD(bus_set_resource
, bus_generic_rl_set_resource
),
180 DEVMETHOD(bus_get_resource
, bus_generic_rl_get_resource
),
181 DEVMETHOD(bus_alloc_resource
, acpi_alloc_resource
),
182 DEVMETHOD(bus_release_resource
, acpi_release_resource
),
183 DEVMETHOD(bus_delete_resource
, acpi_delete_resource
),
184 DEVMETHOD(bus_child_pnpinfo_str
, acpi_child_pnpinfo_str_method
),
185 DEVMETHOD(bus_child_location_str
, acpi_child_location_str_method
),
186 DEVMETHOD(bus_activate_resource
, bus_generic_activate_resource
),
187 DEVMETHOD(bus_deactivate_resource
, bus_generic_deactivate_resource
),
188 DEVMETHOD(bus_setup_intr
, bus_generic_setup_intr
),
189 DEVMETHOD(bus_teardown_intr
, bus_generic_teardown_intr
),
192 DEVMETHOD(acpi_id_probe
, acpi_device_id_probe
),
193 DEVMETHOD(acpi_evaluate_object
, acpi_device_eval_obj
),
194 DEVMETHOD(acpi_pwr_for_sleep
, acpi_device_pwr_for_sleep
),
195 DEVMETHOD(acpi_scan_children
, acpi_device_scan_children
),
198 DEVMETHOD(pci_set_powerstate
, acpi_set_powerstate_method
),
201 DEVMETHOD(isa_pnp_probe
, acpi_isa_pnp_probe
),
206 static driver_t acpi_driver
= {
209 sizeof(struct acpi_softc
),
212 static devclass_t acpi_devclass
;
213 DRIVER_MODULE(acpi
, nexus
, acpi_driver
, acpi_devclass
, acpi_modevent
, NULL
);
214 MODULE_VERSION(acpi
, 1);
216 ACPI_SERIAL_DECL(acpi
, "ACPI serializer")
218 /* Local pools for managing system resources for ACPI child devices. */
219 static struct rman acpi_rman_io
, acpi_rman_mem
;
221 #define ACPI_MINIMUM_AWAKETIME 5
223 static const char* sleep_state_names
[] = {
224 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
226 SYSCTL_NODE(_debug
, OID_AUTO
, acpi
, CTLFLAG_RD
, NULL
, "ACPI debugging");
227 static char acpi_ca_version
[12];
228 SYSCTL_STRING(_debug_acpi
, OID_AUTO
, acpi_ca_version
, CTLFLAG_RD
,
229 acpi_ca_version
, 0, "Version of Intel ACPI-CA");
232 * Allow override of whether methods execute in parallel or not.
233 * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
234 * errors for AML that really can't handle parallel method execution.
235 * It is off by default since this breaks recursive methods and
236 * some IBMs use such code.
238 static int acpi_serialize_methods
;
239 TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods
);
241 /* Power devices off and on in suspend and resume. XXX Remove once tested. */
242 static int acpi_do_powerstate
= 1;
243 TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate
);
244 SYSCTL_INT(_debug_acpi
, OID_AUTO
, do_powerstate
, CTLFLAG_RW
,
245 &acpi_do_powerstate
, 1, "Turn off devices when suspending.");
247 /* Allow users to override quirks. */
248 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks
);
250 static int acpi_susp_bounce
;
251 SYSCTL_INT(_debug_acpi
, OID_AUTO
, suspend_bounce
, CTLFLAG_RW
,
252 &acpi_susp_bounce
, 0, "Don't actually suspend, just test devices.");
255 * ACPI can only be loaded as a module by the loader; activating it after
256 * system bootstrap time is not useful, and can be fatal to the system.
257 * It also cannot be unloaded, since the entire system bus heirarchy hangs
261 acpi_modevent(struct module
*mod
, int event
, void *junk
)
266 kprintf("The ACPI driver cannot be loaded after boot.\n");
271 if (!cold
&& power_pm_get_type() == POWER_PM_TYPE_ACPI
)
281 * Perform early initialization.
286 static int started
= 0;
290 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
292 /* Only run the startup code once. The MADT driver also calls this. */
294 return_VALUE (AE_OK
);
298 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
299 * if more tables exist.
301 if (ACPI_FAILURE(status
= AcpiInitializeTables(NULL
, 2, TRUE
))) {
302 kprintf("ACPI: Table initialisation failed: %s\n",
303 AcpiFormatException(status
));
304 return_VALUE (status
);
307 /* Set up any quirks we have for this system. */
309 if (acpi_quirks
== ACPI_Q_OK
)
310 acpi_table_quirks(&acpi_quirks
);
313 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
314 if (resource_int_value("acpi", 0, "disabled", &val
) == 0 && val
== 0)
315 acpi_quirks
&= ~ACPI_Q_BROKEN
;
316 if (acpi_quirks
& ACPI_Q_BROKEN
) {
317 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
321 return_VALUE (status
);
325 * Detect ACPI, perform early initialisation
328 acpi_identify(driver_t
*driver
, device_t parent
)
332 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
337 /* Check that we haven't been disabled with a hint. */
338 if (resource_disabled("acpi", 0))
341 /* Make sure we're not being doubly invoked. */
342 if (device_find_child(parent
, "acpi", 0) != NULL
)
345 ksnprintf(acpi_ca_version
, sizeof(acpi_ca_version
), "%x", ACPI_CA_VERSION
);
347 /* Initialize root tables. */
348 if (ACPI_FAILURE(acpi_Startup())) {
349 kprintf("ACPI: Try disabling either ACPI or apic support.\n");
353 /* Attach the actual ACPI device. */
354 if ((child
= BUS_ADD_CHILD(parent
, parent
, 10, "acpi", 0)) == NULL
) {
355 device_printf(parent
, "device_identify failed\n");
361 * Fetch some descriptive data from ACPI to put in our attach message.
364 acpi_probe(device_t dev
)
366 ACPI_TABLE_RSDP
*rsdp
;
367 ACPI_TABLE_HEADER
*rsdt
;
368 ACPI_PHYSICAL_ADDRESS paddr
;
369 char buf
[ACPI_OEM_ID_SIZE
+ ACPI_OEM_TABLE_ID_SIZE
+ 2];
372 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
374 if (power_pm_get_type() != POWER_PM_TYPE_NONE
&&
375 power_pm_get_type() != POWER_PM_TYPE_ACPI
) {
376 device_printf(dev
, "probe failed, other PM system enabled.\n");
377 return_VALUE (ENXIO
);
380 if ((paddr
= AcpiOsGetRootPointer()) == 0 ||
381 (rsdp
= AcpiOsMapMemory(paddr
, sizeof(ACPI_TABLE_RSDP
))) == NULL
)
382 return_VALUE (ENXIO
);
383 if (rsdp
->Revision
> 1 && rsdp
->XsdtPhysicalAddress
!= 0)
384 paddr
= (ACPI_PHYSICAL_ADDRESS
)rsdp
->XsdtPhysicalAddress
;
386 paddr
= (ACPI_PHYSICAL_ADDRESS
)rsdp
->RsdtPhysicalAddress
;
387 AcpiOsUnmapMemory(rsdp
, sizeof(ACPI_TABLE_RSDP
));
389 if ((rsdt
= AcpiOsMapMemory(paddr
, sizeof(ACPI_TABLE_HEADER
))) == NULL
)
390 return_VALUE (ENXIO
);
391 sbuf_new(&sb
, buf
, sizeof(buf
), SBUF_FIXEDLEN
);
392 sbuf_bcat(&sb
, rsdt
->OemId
, ACPI_OEM_ID_SIZE
);
395 sbuf_bcat(&sb
, rsdt
->OemTableId
, ACPI_OEM_TABLE_ID_SIZE
);
398 device_set_desc_copy(dev
, sbuf_data(&sb
));
400 AcpiOsUnmapMemory(rsdt
, sizeof(ACPI_TABLE_HEADER
));
406 acpi_attach(device_t dev
)
408 struct acpi_softc
*sc
;
415 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
417 sc
= device_get_softc(dev
);
419 callout_init(&sc
->susp_force_to
);
421 if ((error
= acpi_task_thread_init())) {
422 device_printf(dev
, "Could not start task thread.\n");
428 /* Initialize resource manager. */
429 acpi_rman_io
.rm_type
= RMAN_ARRAY
;
430 acpi_rman_io
.rm_start
= 0;
431 acpi_rman_io
.rm_end
= 0xffff;
432 acpi_rman_io
.rm_descr
= "ACPI I/O ports";
433 if (rman_init(&acpi_rman_io
, -1) != 0)
434 panic("acpi rman_init IO ports failed");
435 acpi_rman_mem
.rm_type
= RMAN_ARRAY
;
436 acpi_rman_mem
.rm_start
= 0;
437 acpi_rman_mem
.rm_end
= ~0ul;
438 acpi_rman_mem
.rm_descr
= "ACPI I/O memory addresses";
439 if (rman_init(&acpi_rman_mem
, -1) != 0)
440 panic("acpi rman_init memory failed");
442 /* Initialise the ACPI mutex */
443 ACPI_LOCK_INIT(acpi
, "acpi");
444 ACPI_SERIAL_INIT(acpi
);
447 * Set the globals from our tunables. This is needed because ACPI-CA
448 * uses UINT8 for some values and we have no tunable_byte.
450 AcpiGbl_AllMethodsSerialized
= acpi_serialize_methods
;
451 AcpiGbl_EnableInterpreterSlack
= TRUE
;
453 /* Start up the ACPI CA subsystem. */
454 status
= AcpiInitializeSubsystem();
455 if (ACPI_FAILURE(status
)) {
456 device_printf(dev
, "Could not initialize Subsystem: %s\n",
457 AcpiFormatException(status
));
461 /* Load ACPI name space. */
462 status
= AcpiLoadTables();
463 if (ACPI_FAILURE(status
)) {
464 device_printf(dev
, "Could not load Namespace: %s\n",
465 AcpiFormatException(status
));
469 /* Handle MCFG table if present. */
472 /* Install the default address space handlers. */
473 status
= AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT
,
474 ACPI_ADR_SPACE_SYSTEM_MEMORY
, ACPI_DEFAULT_HANDLER
, NULL
, NULL
);
475 if (ACPI_FAILURE(status
)) {
476 device_printf(dev
, "Could not initialise SystemMemory handler: %s\n",
477 AcpiFormatException(status
));
480 status
= AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT
,
481 ACPI_ADR_SPACE_SYSTEM_IO
, ACPI_DEFAULT_HANDLER
, NULL
, NULL
);
482 if (ACPI_FAILURE(status
)) {
483 device_printf(dev
, "Could not initialise SystemIO handler: %s\n",
484 AcpiFormatException(status
));
487 status
= AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT
,
488 ACPI_ADR_SPACE_PCI_CONFIG
, ACPI_DEFAULT_HANDLER
, NULL
, NULL
);
489 if (ACPI_FAILURE(status
)) {
490 device_printf(dev
, "could not initialise PciConfig handler: %s\n",
491 AcpiFormatException(status
));
496 * Note that some systems (specifically, those with namespace evaluation
497 * issues that require the avoidance of parts of the namespace) must
498 * avoid running _INI and _STA on everything, as well as dodging the final
501 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
503 * XXX We should arrange for the object init pass after we have attached
504 * all our child devices, but on many systems it works here.
507 if (ktestenv("debug.acpi.avoid"))
508 flags
= ACPI_NO_DEVICE_INIT
| ACPI_NO_OBJECT_INIT
;
510 /* Bring the hardware and basic handlers online. */
511 if (ACPI_FAILURE(status
= AcpiEnableSubsystem(flags
))) {
512 device_printf(dev
, "Could not enable ACPI: %s\n",
513 AcpiFormatException(status
));
518 * Fix up the interrupt timer after enabling ACPI, so that the
519 * interrupt cputimer that choked by ACPI power management could
520 * be resurrected before probing various devices.
523 cputimer_intr_pmfixup();
526 * Call the ECDT probe function to provide EC functionality before
527 * the namespace has been evaluated.
529 * XXX This happens before the sysresource devices have been probed and
530 * attached so its resources come from nexus0. In practice, this isn't
531 * a problem but should be addressed eventually.
533 acpi_ec_ecdt_probe(dev
);
535 /* Bring device objects and regions online. */
536 if (ACPI_FAILURE(status
= AcpiInitializeObjects(flags
))) {
537 device_printf(dev
, "Could not initialize ACPI objects: %s\n",
538 AcpiFormatException(status
));
543 * Setup our sysctl tree.
545 * XXX: This doesn't check to make sure that none of these fail.
547 sysctl_ctx_init(&sc
->acpi_sysctl_ctx
);
548 sc
->acpi_sysctl_tree
= SYSCTL_ADD_NODE(&sc
->acpi_sysctl_ctx
,
549 SYSCTL_STATIC_CHILDREN(_hw
), OID_AUTO
,
550 device_get_name(dev
), CTLFLAG_RD
, 0, "");
551 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
552 OID_AUTO
, "supported_sleep_state", CTLTYPE_STRING
| CTLFLAG_RD
,
553 0, 0, acpi_supported_sleep_state_sysctl
, "A", "");
554 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
555 OID_AUTO
, "power_button_state", CTLTYPE_STRING
| CTLFLAG_RW
,
556 &sc
->acpi_power_button_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
557 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
558 OID_AUTO
, "sleep_button_state", CTLTYPE_STRING
| CTLFLAG_RW
,
559 &sc
->acpi_sleep_button_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
560 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
561 OID_AUTO
, "lid_switch_state", CTLTYPE_STRING
| CTLFLAG_RW
,
562 &sc
->acpi_lid_switch_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
563 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
564 OID_AUTO
, "standby_state", CTLTYPE_STRING
| CTLFLAG_RW
,
565 &sc
->acpi_standby_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
566 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
567 OID_AUTO
, "suspend_state", CTLTYPE_STRING
| CTLFLAG_RW
,
568 &sc
->acpi_suspend_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
569 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
570 OID_AUTO
, "sleep_delay", CTLFLAG_RW
, &sc
->acpi_sleep_delay
, 0,
572 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
573 OID_AUTO
, "s4bios", CTLFLAG_RW
, &sc
->acpi_s4bios
, 0, "S4BIOS mode");
574 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
575 OID_AUTO
, "verbose", CTLFLAG_RW
, &sc
->acpi_verbose
, 0, "verbose mode");
576 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
577 OID_AUTO
, "disable_on_reboot", CTLFLAG_RW
,
578 &sc
->acpi_do_disable
, 0, "Disable ACPI when rebooting/halting system");
579 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
580 OID_AUTO
, "handle_reboot", CTLFLAG_RW
,
581 &sc
->acpi_handle_reboot
, 0, "Use ACPI Reset Register to reboot");
584 * Default to 1 second before sleeping to give some machines time to
587 sc
->acpi_sleep_delay
= 1;
589 sc
->acpi_verbose
= 1;
590 if ((env
= kgetenv("hw.acpi.verbose")) != NULL
) {
591 if (strcmp(env
, "0") != 0)
592 sc
->acpi_verbose
= 1;
596 /* Only enable reboot by default if the FADT says it is available. */
597 if (AcpiGbl_FADT
.Flags
& ACPI_FADT_RESET_REGISTER
)
598 sc
->acpi_handle_reboot
= 1;
600 /* Only enable S4BIOS by default if the FACS says it is available. */
601 if (AcpiGbl_FACS
->Flags
& ACPI_FACS_S4_BIOS_PRESENT
)
605 * Dispatch the default sleep state to devices. The lid switch is set
606 * to NONE by default to avoid surprising users.
608 sc
->acpi_power_button_sx
= ACPI_STATE_S5
;
609 sc
->acpi_lid_switch_sx
= ACPI_S_STATES_MAX
+ 1;
610 sc
->acpi_standby_sx
= ACPI_STATE_S1
;
611 sc
->acpi_suspend_sx
= ACPI_STATE_S3
;
613 /* Pick the first valid sleep state for the sleep button default. */
614 sc
->acpi_sleep_button_sx
= ACPI_S_STATES_MAX
+ 1;
615 for (state
= ACPI_STATE_S1
; state
<= ACPI_STATE_S4
; state
++)
616 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state
, &TypeA
, &TypeB
))) {
617 sc
->acpi_sleep_button_sx
= state
;
621 acpi_enable_fixed_events(sc
);
624 * Scan the namespace and attach/initialise children.
627 /* Register our shutdown handler. */
628 EVENTHANDLER_REGISTER(shutdown_final
, acpi_shutdown_final
, sc
,
632 * Register our acpi event handlers.
633 * XXX should be configurable eg. via userland policy manager.
635 EVENTHANDLER_REGISTER(acpi_sleep_event
, acpi_system_eventhandler_sleep
,
636 sc
, ACPI_EVENT_PRI_LAST
);
637 EVENTHANDLER_REGISTER(acpi_wakeup_event
, acpi_system_eventhandler_wakeup
,
638 sc
, ACPI_EVENT_PRI_LAST
);
640 /* Flag our initial states. */
641 sc
->acpi_enabled
= 1;
642 sc
->acpi_sstate
= ACPI_STATE_S0
;
643 sc
->acpi_sleep_disabled
= 0;
644 /* Create the control device */
645 sc
->acpi_dev_t
= make_dev(&acpi_ops
, 0, UID_ROOT
, GID_WHEEL
, 0644,
647 sc
->acpi_dev_t
->si_drv1
= sc
;
649 if ((error
= acpi_machdep_init(dev
)))
652 /* Register ACPI again to pass the correct argument of pm_func. */
653 power_pm_register(POWER_PM_TYPE_ACPI
, acpi_pm_func
, sc
);
655 if (!acpi_disabled("bus"))
656 acpi_probe_children(dev
);
658 /* Update all GPEs and enable runtime GPEs. */
659 status
= AcpiUpdateAllGpes();
660 if (ACPI_FAILURE(status
)) {
661 device_printf(dev
, "Could not update all GPEs: %s\n",
662 AcpiFormatException(status
));
665 /* Allow sleep request after a while. */
666 /* timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME); */
671 cputimer_intr_pmfixup();
672 return_VALUE (error
);
676 acpi_suspend(device_t dev
)
678 device_t child
, *devlist
;
679 int error
, i
, numdevs
, pstate
;
683 /* First give child devices a chance to suspend. */
684 error
= bus_generic_suspend(dev
);
689 * Now, set them into the appropriate power state, usually D3. If the
690 * device has an _SxD method for the next sleep state, use that power
693 device_get_children(dev
, &devlist
, &numdevs
);
694 for (i
= 0; i
< numdevs
; i
++) {
695 /* If the device is not attached, we've powered it down elsewhere. */
697 if (!device_is_attached(child
))
701 * Default to D3 for all sleep states. The _SxD method is optional
702 * so set the powerstate even if it's absent.
704 pstate
= PCI_POWERSTATE_D3
;
705 error
= acpi_device_pwr_for_sleep(device_get_parent(child
),
707 if ((error
== 0 || error
== ESRCH
) && acpi_do_powerstate
)
708 pci_set_powerstate(child
, pstate
);
710 kfree(devlist
, M_TEMP
);
717 acpi_resume(device_t dev
)
721 device_t child
, *devlist
;
726 * Put all devices in D0 before resuming them. Call _S0D on each one
727 * since some systems expect this.
729 device_get_children(dev
, &devlist
, &numdevs
);
730 for (i
= 0; i
< numdevs
; i
++) {
732 handle
= acpi_get_handle(child
);
734 AcpiEvaluateObject(handle
, "_S0D", NULL
, NULL
);
735 if (device_is_attached(child
) && acpi_do_powerstate
)
736 pci_set_powerstate(child
, PCI_POWERSTATE_D0
);
738 kfree(devlist
, M_TEMP
);
740 return (bus_generic_resume(dev
));
744 acpi_shutdown(device_t dev
)
749 /* Allow children to shutdown first. */
750 bus_generic_shutdown(dev
);
753 * Enable any GPEs that are able to power-on the system (i.e., RTC).
754 * Also, disable any that are not valid for this state (most).
756 acpi_wake_prep_walk(ACPI_STATE_S5
);
762 * Handle a new device being added
765 acpi_add_child(device_t bus
, device_t parent
, int order
, const char *name
, int unit
)
767 struct acpi_device
*ad
;
770 if ((ad
= kmalloc(sizeof(*ad
), M_ACPIDEV
, M_NOWAIT
| M_ZERO
)) == NULL
)
773 resource_list_init(&ad
->ad_rl
);
774 child
= device_add_child_ordered(parent
, order
, name
, unit
);
776 device_set_ivars(child
, ad
);
778 kfree(ad
, M_ACPIDEV
);
783 acpi_print_child(device_t bus
, device_t child
)
785 struct acpi_device
*adev
= device_get_ivars(child
);
786 struct resource_list
*rl
= &adev
->ad_rl
;
789 retval
+= bus_print_child_header(bus
, child
);
790 retval
+= resource_list_print_type(rl
, "port", SYS_RES_IOPORT
, "%#lx");
791 retval
+= resource_list_print_type(rl
, "iomem", SYS_RES_MEMORY
, "%#lx");
792 retval
+= resource_list_print_type(rl
, "irq", SYS_RES_IRQ
, "%ld");
793 retval
+= resource_list_print_type(rl
, "drq", SYS_RES_DRQ
, "%ld");
794 if (device_get_flags(child
))
795 retval
+= kprintf(" flags %#x", device_get_flags(child
));
796 retval
+= bus_print_child_footer(bus
, child
);
802 * If this device is an ACPI child but no one claimed it, attempt
803 * to power it off. We'll power it back up when a driver is added.
805 * XXX Disabled for now since many necessary devices (like fdc and
806 * ATA) don't claim the devices we created for them but still expect
807 * them to be powered up.
810 acpi_probe_nomatch(device_t bus
, device_t child
)
813 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
817 * If a new driver has a chance to probe a child, first power it up.
819 * XXX Disabled for now (see acpi_probe_nomatch for details).
822 acpi_driver_added(device_t dev
, driver_t
*driver
)
824 device_t child
, *devlist
;
827 DEVICE_IDENTIFY(driver
, dev
);
828 device_get_children(dev
, &devlist
, &numdevs
);
829 for (i
= 0; i
< numdevs
; i
++) {
831 if (device_get_state(child
) == DS_NOTPRESENT
) {
832 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
833 if (device_probe_and_attach(child
) != 0)
834 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
837 kfree(devlist
, M_TEMP
);
840 /* Location hint for devctl(8) */
842 acpi_child_location_str_method(device_t cbdev
, device_t child
, char *buf
,
845 struct acpi_device
*dinfo
= device_get_ivars(child
);
847 if (dinfo
->ad_handle
)
848 ksnprintf(buf
, buflen
, "handle=%s", acpi_name(dinfo
->ad_handle
));
850 ksnprintf(buf
, buflen
, "unknown");
854 /* PnP information for devctl(8) */
856 acpi_child_pnpinfo_str_method(device_t cbdev
, device_t child
, char *buf
,
859 ACPI_DEVICE_INFO
*adinfo
;
860 struct acpi_device
*dinfo
= device_get_ivars(child
);
864 error
= AcpiGetObjectInfo(dinfo
->ad_handle
, &adinfo
);
866 ksnprintf(buf
, buflen
, "unknown");
868 ksnprintf(buf
, buflen
, "_HID=%s _UID=%lu",
869 (adinfo
->Valid
& ACPI_VALID_HID
) ?
870 adinfo
->HardwareId
.String
: "none",
871 (adinfo
->Valid
& ACPI_VALID_UID
) ?
872 strtoul(adinfo
->UniqueId
.String
, &end
, 10) : 0);
880 * Handle per-device ivars
883 acpi_read_ivar(device_t dev
, device_t child
, int index
, uintptr_t *result
)
885 struct acpi_device
*ad
;
887 if ((ad
= device_get_ivars(child
)) == NULL
) {
888 kprintf("device has no ivars\n");
892 /* ACPI and ISA compatibility ivars */
894 case ACPI_IVAR_HANDLE
:
895 *(ACPI_HANDLE
*)result
= ad
->ad_handle
;
897 case ACPI_IVAR_MAGIC
:
898 *(uintptr_t *)result
= ad
->ad_magic
;
900 case ACPI_IVAR_PRIVATE
:
901 *(void **)result
= ad
->ad_private
;
903 case ACPI_IVAR_FLAGS
:
904 *(int *)result
= ad
->ad_flags
;
906 case ISA_IVAR_VENDORID
:
907 case ISA_IVAR_SERIAL
:
908 case ISA_IVAR_COMPATID
:
911 case ISA_IVAR_LOGICALID
:
912 *(int *)result
= acpi_isa_get_logicalid(child
);
922 acpi_write_ivar(device_t dev
, device_t child
, int index
, uintptr_t value
)
924 struct acpi_device
*ad
;
926 if ((ad
= device_get_ivars(child
)) == NULL
) {
927 kprintf("device has no ivars\n");
932 case ACPI_IVAR_HANDLE
:
933 ad
->ad_handle
= (ACPI_HANDLE
)value
;
935 case ACPI_IVAR_MAGIC
:
936 ad
->ad_magic
= (uintptr_t)value
;
938 case ACPI_IVAR_PRIVATE
:
939 ad
->ad_private
= (void *)value
;
941 case ACPI_IVAR_FLAGS
:
942 ad
->ad_flags
= (int)value
;
945 panic("bad ivar write request (%d)", index
);
953 * Handle child resource allocation/removal
955 static struct resource_list
*
956 acpi_get_rlist(device_t dev
, device_t child
)
958 struct acpi_device
*ad
;
960 ad
= device_get_ivars(child
);
965 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
966 * duplicates, we merge any in the sysresource attach routine.
969 acpi_sysres_alloc(device_t dev
)
971 struct resource
*res
;
972 struct resource_list
*rl
;
973 struct resource_list_entry
*rle
;
975 char *sysres_ids
[] = { "PNP0C01", "PNP0C02", NULL
};
979 * Probe/attach any sysresource devices. This would be unnecessary if we
980 * had multi-pass probe/attach.
982 if (device_get_children(dev
, &children
, &child_count
) != 0)
984 for (i
= 0; i
< child_count
; i
++) {
985 if (ACPI_ID_PROBE(dev
, children
[i
], sysres_ids
) != NULL
)
986 device_probe_and_attach(children
[i
]);
988 kfree(children
, M_TEMP
);
990 rl
= BUS_GET_RESOURCE_LIST(device_get_parent(dev
), dev
);
993 SLIST_FOREACH(rle
, rl
, link
) {
994 if (rle
->res
!= NULL
) {
995 device_printf(dev
, "duplicate resource for %lx\n", rle
->start
);
999 /* Only memory and IO resources are valid here. */
1000 switch (rle
->type
) {
1001 case SYS_RES_IOPORT
:
1004 case SYS_RES_MEMORY
:
1005 rm
= &acpi_rman_mem
;
1011 /* Pre-allocate resource and add to our rman pool. */
1012 res
= BUS_ALLOC_RESOURCE(device_get_parent(dev
), dev
, rle
->type
,
1013 &rle
->rid
, rle
->start
, rle
->start
+ rle
->count
- 1, rle
->count
, 0);
1015 rman_manage_region(rm
, rman_get_start(res
), rman_get_end(res
));
1018 device_printf(dev
, "reservation of %lx, %lx (%d) failed\n",
1019 rle
->start
, rle
->count
, rle
->type
);
1024 static struct resource
*
1025 acpi_alloc_resource(device_t bus
, device_t child
, int type
, int *rid
,
1026 u_long start
, u_long end
, u_long count
, u_int flags
)
1029 struct acpi_device
*ad
= device_get_ivars(child
);
1030 struct resource_list
*rl
= &ad
->ad_rl
;
1031 struct resource_list_entry
*rle
;
1032 struct resource
*res
;
1037 /* We only handle memory and IO resources through rman. */
1039 case SYS_RES_IOPORT
:
1042 case SYS_RES_MEMORY
:
1043 rm
= &acpi_rman_mem
;
1049 ACPI_SERIAL_BEGIN(acpi
);
1052 * If this is an allocation of the "default" range for a given RID, and
1053 * we know what the resources for this device are (i.e., they're on the
1054 * child's resource list), use those start/end values.
1056 if (bus
== device_get_parent(child
) && start
== 0UL && end
== ~0UL) {
1057 rle
= resource_list_find(rl
, type
, *rid
);
1066 * If this is an allocation of a specific range, see if we can satisfy
1067 * the request from our system resource regions. If we can't, pass the
1068 * request up to the parent.
1070 if (start
+ count
- 1 == end
&& rm
!= NULL
)
1071 res
= rman_reserve_resource(rm
, start
, end
, count
, flags
& ~RF_ACTIVE
,
1074 res
= BUS_ALLOC_RESOURCE(device_get_parent(bus
), child
, type
, rid
,
1075 start
, end
, count
, flags
);
1077 rman_set_rid(res
, *rid
);
1079 /* If requested, activate the resource using the parent's method. */
1080 if (flags
& RF_ACTIVE
)
1081 if (bus_activate_resource(child
, type
, *rid
, res
) != 0) {
1082 rman_release_resource(res
);
1088 if (res
!= NULL
&& device_get_parent(child
) == bus
)
1092 * Since bus_config_intr() takes immediate effect, we cannot
1093 * configure the interrupt associated with a device when we
1094 * parse the resources but have to defer it until a driver
1095 * actually allocates the interrupt via bus_alloc_resource().
1097 * XXX: Should we handle the lookup failing?
1099 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child
, *rid
, res
, &ares
)))
1100 acpi_config_intr(child
, &ares
);
1102 kprintf("irq resource not found\n");
1107 ACPI_SERIAL_END(acpi
);
1112 acpi_release_resource(device_t bus
, device_t child
, int type
, int rid
,
1118 /* We only handle memory and IO resources through rman. */
1120 case SYS_RES_IOPORT
:
1123 case SYS_RES_MEMORY
:
1124 rm
= &acpi_rman_mem
;
1130 ACPI_SERIAL_BEGIN(acpi
);
1133 * If this resource belongs to one of our internal managers,
1134 * deactivate it and release it to the local pool. If it doesn't,
1135 * pass this request up to the parent.
1137 if (rm
!= NULL
&& rman_is_region_manager(r
, rm
)) {
1138 if (rman_get_flags(r
) & RF_ACTIVE
) {
1139 ret
= bus_deactivate_resource(child
, type
, rid
, r
);
1143 ret
= rman_release_resource(r
);
1145 ret
= BUS_RELEASE_RESOURCE(device_get_parent(bus
), child
, type
, rid
, r
);
1148 ACPI_SERIAL_END(acpi
);
1153 acpi_delete_resource(device_t bus
, device_t child
, int type
, int rid
)
1155 struct resource_list
*rl
;
1157 rl
= acpi_get_rlist(bus
, child
);
1158 resource_list_delete(rl
, type
, rid
);
1161 /* Allocate an IO port or memory resource, given its GAS. */
1163 acpi_bus_alloc_gas(device_t dev
, int *type
, int *rid
, ACPI_GENERIC_ADDRESS
*gas
,
1164 struct resource
**res
, u_int flags
)
1166 int error
, res_type
;
1169 if (type
== NULL
|| rid
== NULL
|| gas
== NULL
|| res
== NULL
)
1172 /* We only support memory and IO spaces. */
1173 switch (gas
->SpaceId
) {
1174 case ACPI_ADR_SPACE_SYSTEM_MEMORY
:
1175 res_type
= SYS_RES_MEMORY
;
1177 case ACPI_ADR_SPACE_SYSTEM_IO
:
1178 res_type
= SYS_RES_IOPORT
;
1181 return (EOPNOTSUPP
);
1185 * If the register width is less than 8, assume the BIOS author means
1186 * it is a bit field and just allocate a byte.
1188 if (gas
->BitWidth
&& gas
->BitWidth
< 8)
1191 /* Validate the address after we're sure we support the space. */
1192 if (gas
->Address
== 0 || gas
->BitWidth
== 0)
1195 bus_set_resource(dev
, res_type
, *rid
, gas
->Address
,
1196 gas
->BitWidth
/ 8, -1);
1197 *res
= bus_alloc_resource_any(dev
, res_type
, rid
, RF_ACTIVE
| flags
);
1202 bus_delete_resource(dev
, res_type
, *rid
);
1207 /* Probe _HID and _CID for compatible ISA PNP ids. */
1209 acpi_isa_get_logicalid(device_t dev
)
1211 ACPI_DEVICE_INFO
*devinfo
;
1216 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1221 /* Fetch and validate the HID. */
1222 if ((h
= acpi_get_handle(dev
)) == NULL
)
1224 error
= AcpiGetObjectInfo(h
, &devinfo
);
1225 if (ACPI_FAILURE(error
))
1228 if ((devinfo
->Valid
& ACPI_VALID_HID
) != 0)
1229 pnpid
= PNP_EISAID(devinfo
->HardwareId
.String
);
1233 AcpiOsFree(devinfo
);
1234 return_VALUE (pnpid
);
1238 acpi_isa_get_compatid(device_t dev
, uint32_t *cids
, int count
)
1240 ACPI_DEVICE_INFO
*devinfo
;
1246 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1251 /* Fetch and validate the CID */
1252 if ((h
= acpi_get_handle(dev
)) == NULL
)
1254 error
= AcpiGetObjectInfo(h
, &devinfo
);
1255 if (ACPI_FAILURE(error
))
1257 if ((devinfo
->Valid
& ACPI_VALID_CID
) == 0)
1260 if (devinfo
->CompatibleIdList
.Count
< count
)
1261 count
= devinfo
->CompatibleIdList
.Count
;
1262 for (i
= 0; i
< count
; i
++) {
1263 if (strncmp(devinfo
->CompatibleIdList
.Ids
[i
].String
, "PNP", 3) != 0)
1265 *pnpid
++ = PNP_EISAID(devinfo
->CompatibleIdList
.Ids
[i
].String
);
1271 AcpiOsFree(devinfo
);
1272 return_VALUE (valid
);
1276 acpi_device_id_probe(device_t bus
, device_t dev
, char **ids
)
1281 h
= acpi_get_handle(dev
);
1282 if (ids
== NULL
|| h
== NULL
|| acpi_get_type(dev
) != ACPI_TYPE_DEVICE
)
1285 /* Try to match one of the array of IDs with a HID or CID. */
1286 for (i
= 0; ids
[i
] != NULL
; i
++) {
1287 if (acpi_MatchHid(h
, ids
[i
]))
1294 acpi_device_eval_obj(device_t bus
, device_t dev
, ACPI_STRING pathname
,
1295 ACPI_OBJECT_LIST
*parameters
, ACPI_BUFFER
*ret
)
1300 h
= ACPI_ROOT_OBJECT
;
1301 else if ((h
= acpi_get_handle(dev
)) == NULL
)
1302 return (AE_BAD_PARAMETER
);
1303 return (AcpiEvaluateObject(h
, pathname
, parameters
, ret
));
1307 acpi_device_pwr_for_sleep(device_t bus
, device_t dev
, int *dstate
)
1309 struct acpi_softc
*sc
;
1315 sc
= device_get_softc(bus
);
1316 handle
= acpi_get_handle(dev
);
1319 * XXX If we find these devices, don't try to power them down.
1320 * The serial and IRDA ports on my T23 hang the system when
1321 * set to D3 and it appears that such legacy devices may
1322 * need special handling in their drivers.
1324 if (handle
== NULL
||
1325 acpi_MatchHid(handle
, "PNP0500") ||
1326 acpi_MatchHid(handle
, "PNP0501") ||
1327 acpi_MatchHid(handle
, "PNP0502") ||
1328 acpi_MatchHid(handle
, "PNP0510") ||
1329 acpi_MatchHid(handle
, "PNP0511"))
1333 * Override next state with the value from _SxD, if present. If no
1334 * dstate argument was provided, don't fetch the return value.
1336 ksnprintf(sxd
, sizeof(sxd
), "_S%dD", sc
->acpi_sstate
);
1338 status
= acpi_GetInteger(handle
, sxd
, dstate
);
1340 status
= AcpiEvaluateObject(handle
, sxd
, NULL
, NULL
);
1357 /* Callback arg for our implementation of walking the namespace. */
1358 struct acpi_device_scan_ctx
{
1359 acpi_scan_cb_t user_fn
;
1365 acpi_device_scan_cb(ACPI_HANDLE h
, UINT32 level
, void *arg
, void **retval
)
1367 struct acpi_device_scan_ctx
*ctx
;
1368 device_t dev
, old_dev
;
1370 ACPI_OBJECT_TYPE type
;
1373 * Skip this device if we think we'll have trouble with it or it is
1374 * the parent where the scan began.
1376 ctx
= (struct acpi_device_scan_ctx
*)arg
;
1377 if (acpi_avoid(h
) || h
== ctx
->parent
)
1380 /* If this is not a valid device type (e.g., a method), skip it. */
1381 if (ACPI_FAILURE(AcpiGetType(h
, &type
)))
1383 if (type
!= ACPI_TYPE_DEVICE
&& type
!= ACPI_TYPE_PROCESSOR
&&
1384 type
!= ACPI_TYPE_THERMAL
&& type
!= ACPI_TYPE_POWER
)
1388 * Call the user function with the current device. If it is unchanged
1389 * afterwards, return. Otherwise, we update the handle to the new dev.
1391 old_dev
= acpi_get_device(h
);
1393 status
= ctx
->user_fn(h
, &dev
, level
, ctx
->arg
);
1394 if (ACPI_FAILURE(status
) || old_dev
== dev
)
1397 /* Remove the old child and its connection to the handle. */
1398 if (old_dev
!= NULL
) {
1399 device_delete_child(device_get_parent(old_dev
), old_dev
);
1400 AcpiDetachData(h
, acpi_fake_objhandler
);
1403 /* Recreate the handle association if the user created a device. */
1405 AcpiAttachData(h
, acpi_fake_objhandler
, dev
);
1411 acpi_device_scan_children(device_t bus
, device_t dev
, int max_depth
,
1412 acpi_scan_cb_t user_fn
, void *arg
)
1415 struct acpi_device_scan_ctx ctx
;
1417 if (acpi_disabled("children"))
1421 h
= ACPI_ROOT_OBJECT
;
1422 else if ((h
= acpi_get_handle(dev
)) == NULL
)
1423 return (AE_BAD_PARAMETER
);
1424 ctx
.user_fn
= user_fn
;
1427 return (AcpiWalkNamespace(ACPI_TYPE_ANY
, h
, max_depth
,
1428 acpi_device_scan_cb
, NULL
, &ctx
, NULL
));
1432 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1433 * device power states since it's close enough to ACPI.
1436 acpi_set_powerstate_method(device_t bus
, device_t child
, int state
)
1443 h
= acpi_get_handle(child
);
1444 if (state
< ACPI_STATE_D0
|| state
> ACPI_STATE_D3
)
1449 /* Ignore errors if the power methods aren't present. */
1450 status
= acpi_pwr_switch_consumer(h
, state
);
1451 if (ACPI_FAILURE(status
) && status
!= AE_NOT_FOUND
1452 && status
!= AE_BAD_PARAMETER
)
1453 device_printf(bus
, "failed to set ACPI power state D%d on %s: %s\n",
1454 state
, acpi_name(h
), AcpiFormatException(status
));
1460 acpi_isa_pnp_probe(device_t bus
, device_t child
, struct isa_pnp_id
*ids
)
1462 int result
, cid_count
, i
;
1463 uint32_t lid
, cids
[8];
1465 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1468 * ISA-style drivers attached to ACPI may persist and
1469 * probe manually if we return ENOENT. We never want
1470 * that to happen, so don't ever return it.
1474 /* Scan the supplied IDs for a match */
1475 lid
= acpi_isa_get_logicalid(child
);
1476 cid_count
= acpi_isa_get_compatid(child
, cids
, 8);
1477 while (ids
&& ids
->ip_id
) {
1478 if (lid
== ids
->ip_id
) {
1482 for (i
= 0; i
< cid_count
; i
++) {
1483 if (cids
[i
] == ids
->ip_id
) {
1492 if (result
== 0 && ids
->ip_desc
)
1493 device_set_desc(child
, ids
->ip_desc
);
1495 return_VALUE (result
);
1499 * Look for a MCFG table. If it is present, use the settings for
1500 * domain (segment) 0 to setup PCI config space access via the memory
1504 acpi_enable_pcie(void)
1506 ACPI_TABLE_HEADER
*hdr
;
1507 ACPI_MCFG_ALLOCATION
*alloc
, *end
;
1510 status
= AcpiGetTable(ACPI_SIG_MCFG
, 1, &hdr
);
1511 if (ACPI_FAILURE(status
))
1514 end
= (ACPI_MCFG_ALLOCATION
*)((char *)hdr
+ hdr
->Length
);
1515 alloc
= (ACPI_MCFG_ALLOCATION
*)((ACPI_TABLE_MCFG
*)hdr
+ 1);
1516 while (alloc
< end
) {
1517 if (alloc
->PciSegment
== 0) {
1518 pcie_cfgregopen(alloc
->Address
, alloc
->StartBusNumber
,
1519 alloc
->EndBusNumber
);
1527 * Scan all of the ACPI namespace and attach child devices.
1529 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1530 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1531 * However, in violation of the spec, some systems place their PCI link
1532 * devices in \, so we have to walk the whole namespace. We check the
1533 * type of namespace nodes, so this should be ok.
1536 acpi_probe_children(device_t bus
)
1539 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1542 * Scan the namespace and insert placeholders for all the devices that
1543 * we find. We also probe/attach any early devices.
1545 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1546 * we want to create nodes for all devices, not just those that are
1547 * currently present. (This assumes that we don't want to create/remove
1548 * devices as they appear, which might be smarter.)
1550 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "namespace scan\n"));
1551 AcpiWalkNamespace(ACPI_TYPE_ANY
, ACPI_ROOT_OBJECT
, 100,
1552 acpi_probe_child
, NULL
, bus
, NULL
);
1554 /* Pre-allocate resources for our rman from any sysresource devices. */
1555 acpi_sysres_alloc(bus
);
1556 /* Create any static children by calling device identify methods. */
1557 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "device identify routines\n"));
1558 bus_generic_probe(bus
);
1560 /* Probe/attach all children, created staticly and from the namespace. */
1561 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "first bus_generic_attach\n"));
1562 bus_generic_attach(bus
);
1565 * Some of these children may have attached others as part of their attach
1566 * process (eg. the root PCI bus driver), so rescan.
1568 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "second bus_generic_attach\n"));
1569 bus_generic_attach(bus
);
1571 /* Attach wake sysctls. */
1572 acpi_wake_sysctl_walk(bus
);
1574 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "done attaching children\n"));
1579 * Determine the probe order for a given device.
1582 acpi_probe_order(ACPI_HANDLE handle
, int *order
)
1584 ACPI_OBJECT_TYPE type
;
1587 * 1. I/O port and memory system resource holders
1588 * 2. Embedded controllers (to handle early accesses)
1589 * 3. PCI Link Devices
1592 AcpiGetType(handle
, &type
);
1593 if (acpi_MatchHid(handle
, "PNP0C01") || acpi_MatchHid(handle
, "PNP0C02"))
1595 else if (acpi_MatchHid(handle
, "PNP0C09"))
1597 else if (acpi_MatchHid(handle
, "PNP0C0F"))
1599 else if (type
== ACPI_TYPE_PROCESSOR
)
1604 * Evaluate a child device and determine whether we might attach a device to
1608 acpi_probe_child(ACPI_HANDLE handle
, UINT32 level
, void *context
, void **status
)
1610 struct acpi_prw_data prw
;
1611 ACPI_OBJECT_TYPE type
;
1613 device_t bus
, child
;
1617 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1619 if (acpi_disabled("children"))
1620 return_ACPI_STATUS (AE_OK
);
1622 /* Skip this device if we think we'll have trouble with it. */
1623 if (acpi_avoid(handle
))
1624 return_ACPI_STATUS (AE_OK
);
1626 bus
= (device_t
)context
;
1627 if (ACPI_SUCCESS(AcpiGetType(handle
, &type
))) {
1628 handle_str
= acpi_name(handle
);
1630 case ACPI_TYPE_DEVICE
:
1632 * Since we scan from \, be sure to skip system scope objects.
1633 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1634 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
1635 * during the intialization and \_TZ_ is to support Notify() on it.
1637 if (strcmp(handle_str
, "\\_SB_") == 0 ||
1638 strcmp(handle_str
, "\\_TZ_") == 0)
1641 if (acpi_parse_prw(handle
, &prw
) == 0)
1642 AcpiSetupGpeForWake(handle
, prw
.gpe_handle
, prw
.gpe_bit
);
1645 case ACPI_TYPE_PROCESSOR
:
1646 case ACPI_TYPE_THERMAL
:
1647 case ACPI_TYPE_POWER
:
1649 * Create a placeholder device for this node. Sort the
1650 * placeholder so that the probe/attach passes will run
1651 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1652 * are reserved for special objects (i.e., system
1653 * resources). CPU devices have a very high order to
1654 * ensure they are probed after other devices.
1656 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "scanning '%s'\n", handle_str
));
1657 order
= level
* 10 + 100;
1658 acpi_probe_order(handle
, &order
);
1659 child
= BUS_ADD_CHILD(bus
, bus
, order
, NULL
, -1);
1663 /* Associate the handle with the device_t and vice versa. */
1664 acpi_set_handle(child
, handle
);
1665 AcpiAttachData(handle
, acpi_fake_objhandler
, child
);
1668 * Check that the device is present. If it's not present,
1669 * leave it disabled (so that we have a device_t attached to
1670 * the handle, but we don't probe it).
1672 * XXX PCI link devices sometimes report "present" but not
1673 * "functional" (i.e. if disabled). Go ahead and probe them
1674 * anyway since we may enable them later.
1676 if (type
== ACPI_TYPE_DEVICE
&& !acpi_DeviceIsPresent(child
)) {
1677 /* Never disable PCI link devices. */
1678 if (acpi_MatchHid(handle
, "PNP0C0F"))
1681 * Docking stations should remain enabled since the system
1682 * may be undocked at boot.
1684 if (ACPI_SUCCESS(AcpiGetHandle(handle
, "_DCK", &h
)))
1687 device_disable(child
);
1692 * Get the device's resource settings and attach them.
1693 * Note that if the device has _PRS but no _CRS, we need
1694 * to decide when it's appropriate to try to configure the
1695 * device. Ignore the return value here; it's OK for the
1696 * device not to have any resources.
1698 acpi_parse_resources(child
, handle
, &acpi_res_parse_set
, NULL
);
1703 return_ACPI_STATUS (AE_OK
);
1707 * AcpiAttachData() requires an object handler but never uses it. This is a
1708 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1711 acpi_fake_objhandler(ACPI_HANDLE h
, void *data
)
1716 acpi_shutdown_final(void *arg
, int howto
)
1718 struct acpi_softc
*sc
;
1722 * XXX Shutdown code should only run on the BSP (cpuid 0).
1723 * Some chipsets do not power off the system correctly if called from
1727 if ((howto
& RB_POWEROFF
) != 0) {
1728 status
= AcpiEnterSleepStatePrep(ACPI_STATE_S5
);
1729 if (ACPI_FAILURE(status
)) {
1730 kprintf("AcpiEnterSleepStatePrep failed - %s\n",
1731 AcpiFormatException(status
));
1734 kprintf("Powering system off using ACPI\n");
1735 ACPI_DISABLE_IRQS();
1736 status
= AcpiEnterSleepState(ACPI_STATE_S5
);
1737 if (ACPI_FAILURE(status
)) {
1738 kprintf("ACPI power-off failed - %s\n", AcpiFormatException(status
));
1741 kprintf("ACPI power-off failed - timeout\n");
1743 } else if ((howto
& RB_HALT
) == 0 && sc
->acpi_handle_reboot
) {
1744 /* Reboot using the reset register. */
1745 status
= AcpiReset();
1746 if (ACPI_FAILURE(status
)) {
1747 if (status
!= AE_NOT_EXIST
)
1748 kprintf("ACPI reset failed - %s\n", AcpiFormatException(status
));
1751 kprintf("ACPI reset failed - timeout\n");
1753 } else if (sc
->acpi_do_disable
&& panicstr
== NULL
) {
1755 * Only disable ACPI if the user requested. On some systems, writing
1756 * the disable value to SMI_CMD hangs the system.
1758 kprintf("Shutting down ACPI\n");
1764 acpi_enable_fixed_events(struct acpi_softc
*sc
)
1766 static int first_time
= 1;
1768 /* Enable and clear fixed events and install handlers. */
1769 if ((AcpiGbl_FADT
.Flags
& ACPI_FADT_POWER_BUTTON
) == 0) {
1770 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON
);
1771 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON
,
1772 acpi_event_power_button_sleep
, sc
);
1774 device_printf(sc
->acpi_dev
, "Power Button (fixed)\n");
1776 if ((AcpiGbl_FADT
.Flags
& ACPI_FADT_SLEEP_BUTTON
) == 0) {
1777 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON
);
1778 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON
,
1779 acpi_event_sleep_button_sleep
, sc
);
1781 device_printf(sc
->acpi_dev
, "Sleep Button (fixed)\n");
1788 * Returns true if the device is actually present and should
1789 * be attached to. This requires the present, enabled, UI-visible
1790 * and diagnostics-passed bits to be set.
1793 acpi_DeviceIsPresent(device_t dev
)
1795 ACPI_DEVICE_INFO
*devinfo
;
1801 if ((h
= acpi_get_handle(dev
)) == NULL
)
1803 error
= AcpiGetObjectInfo(h
, &devinfo
);
1804 if (ACPI_FAILURE(error
))
1807 /* If no _STA method, must be present */
1808 if ((devinfo
->Valid
& ACPI_VALID_STA
) == 0)
1811 /* Return true for 'present' and 'functioning' */
1812 if (ACPI_DEVICE_PRESENT(devinfo
->CurrentStatus
))
1815 AcpiOsFree(devinfo
);
1820 * Returns true if the battery is actually present and inserted.
1823 acpi_BatteryIsPresent(device_t dev
)
1825 ACPI_DEVICE_INFO
*devinfo
;
1831 if ((h
= acpi_get_handle(dev
)) == NULL
)
1833 error
= AcpiGetObjectInfo(h
, &devinfo
);
1834 if (ACPI_FAILURE(error
))
1837 /* If no _STA method, must be present */
1838 if ((devinfo
->Valid
& ACPI_VALID_STA
) == 0)
1841 /* Return true for 'present', 'battery present', and 'functioning' */
1842 if (ACPI_BATTERY_PRESENT(devinfo
->CurrentStatus
))
1845 AcpiOsFree(devinfo
);
1850 * Match a HID string against a handle
1853 acpi_MatchHid(ACPI_HANDLE h
, const char *hid
)
1855 ACPI_DEVICE_INFO
*devinfo
;
1860 if (hid
== NULL
|| h
== NULL
)
1862 error
= AcpiGetObjectInfo(h
, &devinfo
);
1863 if (ACPI_FAILURE(error
))
1866 if ((devinfo
->Valid
& ACPI_VALID_HID
) != 0 &&
1867 strcmp(hid
, devinfo
->HardwareId
.String
) == 0)
1869 else if ((devinfo
->Valid
& ACPI_VALID_CID
) != 0) {
1870 for (i
= 0; i
< devinfo
->CompatibleIdList
.Count
; i
++) {
1871 if (strcmp(hid
, devinfo
->CompatibleIdList
.Ids
[i
].String
) == 0) {
1878 AcpiOsFree(devinfo
);
1883 * Return the handle of a named object within our scope, ie. that of (parent)
1884 * or one if its parents.
1887 acpi_GetHandleInScope(ACPI_HANDLE parent
, char *path
, ACPI_HANDLE
*result
)
1892 /* Walk back up the tree to the root */
1894 status
= AcpiGetHandle(parent
, path
, &r
);
1895 if (ACPI_SUCCESS(status
)) {
1899 /* XXX Return error here? */
1900 if (status
!= AE_NOT_FOUND
)
1902 if (ACPI_FAILURE(AcpiGetParent(parent
, &r
)))
1903 return (AE_NOT_FOUND
);
1908 /* Find the difference between two PM tick counts. */
1910 acpi_TimerDelta(uint32_t end
, uint32_t start
)
1915 delta
= end
- start
;
1916 else if (AcpiGbl_FADT
.Flags
& ACPI_FADT_32BIT_TIMER
)
1917 delta
= ((0xFFFFFFFF - start
) + end
+ 1);
1919 delta
= ((0x00FFFFFF - start
) + end
+ 1) & 0x00FFFFFF;
1924 * Allocate a buffer with a preset data size.
1927 acpi_AllocBuffer(int size
)
1931 if ((buf
= kmalloc(size
+ sizeof(*buf
), M_ACPIDEV
, M_NOWAIT
)) == NULL
)
1934 buf
->Pointer
= (void *)(buf
+ 1);
1939 acpi_SetInteger(ACPI_HANDLE handle
, char *path
, UINT32 number
)
1942 ACPI_OBJECT_LIST args
;
1944 arg1
.Type
= ACPI_TYPE_INTEGER
;
1945 arg1
.Integer
.Value
= number
;
1947 args
.Pointer
= &arg1
;
1949 return (AcpiEvaluateObject(handle
, path
, &args
, NULL
));
1953 * Evaluate a path that should return an integer.
1956 acpi_GetInteger(ACPI_HANDLE handle
, char *path
, UINT32
*number
)
1963 handle
= ACPI_ROOT_OBJECT
;
1966 * Assume that what we've been pointed at is an Integer object, or
1967 * a method that will return an Integer.
1969 buf
.Pointer
= ¶m
;
1970 buf
.Length
= sizeof(param
);
1971 status
= AcpiEvaluateObject(handle
, path
, NULL
, &buf
);
1972 if (ACPI_SUCCESS(status
)) {
1973 if (param
.Type
== ACPI_TYPE_INTEGER
)
1974 *number
= param
.Integer
.Value
;
1980 * In some applications, a method that's expected to return an Integer
1981 * may instead return a Buffer (probably to simplify some internal
1982 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1983 * convert it into an Integer as best we can.
1987 if (status
== AE_BUFFER_OVERFLOW
) {
1988 if ((buf
.Pointer
= AcpiOsAllocate(buf
.Length
)) == NULL
) {
1989 status
= AE_NO_MEMORY
;
1991 status
= AcpiEvaluateObject(handle
, path
, NULL
, &buf
);
1992 if (ACPI_SUCCESS(status
))
1993 status
= acpi_ConvertBufferToInteger(&buf
, number
);
1994 AcpiOsFree(buf
.Pointer
);
2001 acpi_ConvertBufferToInteger(ACPI_BUFFER
*bufp
, UINT32
*number
)
2007 p
= (ACPI_OBJECT
*)bufp
->Pointer
;
2008 if (p
->Type
== ACPI_TYPE_INTEGER
) {
2009 *number
= p
->Integer
.Value
;
2012 if (p
->Type
!= ACPI_TYPE_BUFFER
)
2014 if (p
->Buffer
.Length
> sizeof(int))
2015 return (AE_BAD_DATA
);
2018 val
= p
->Buffer
.Pointer
;
2019 for (i
= 0; i
< p
->Buffer
.Length
; i
++)
2020 *number
+= val
[i
] << (i
* 8);
2025 * Iterate over the elements of an a package object, calling the supplied
2026 * function for each element.
2028 * XXX possible enhancement might be to abort traversal on error.
2031 acpi_ForeachPackageObject(ACPI_OBJECT
*pkg
,
2032 void (*func
)(ACPI_OBJECT
*comp
, void *arg
), void *arg
)
2037 if (pkg
== NULL
|| pkg
->Type
!= ACPI_TYPE_PACKAGE
)
2038 return (AE_BAD_PARAMETER
);
2040 /* Iterate over components */
2042 comp
= pkg
->Package
.Elements
;
2043 for (; i
< pkg
->Package
.Count
; i
++, comp
++)
2050 * Find the (index)th resource object in a set.
2053 acpi_FindIndexedResource(ACPI_BUFFER
*buf
, int index
, ACPI_RESOURCE
**resp
)
2058 rp
= (ACPI_RESOURCE
*)buf
->Pointer
;
2062 if (rp
> (ACPI_RESOURCE
*)((u_int8_t
*)buf
->Pointer
+ buf
->Length
))
2063 return (AE_BAD_PARAMETER
);
2065 /* Check for terminator */
2066 if (rp
->Type
== ACPI_RESOURCE_TYPE_END_TAG
|| rp
->Length
== 0)
2067 return (AE_NOT_FOUND
);
2068 rp
= ACPI_NEXT_RESOURCE(rp
);
2077 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2079 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2080 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2081 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2084 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2087 acpi_AppendBufferResource(ACPI_BUFFER
*buf
, ACPI_RESOURCE
*res
)
2092 /* Initialise the buffer if necessary. */
2093 if (buf
->Pointer
== NULL
) {
2094 buf
->Length
= ACPI_INITIAL_RESOURCE_BUFFER_SIZE
;
2095 if ((buf
->Pointer
= AcpiOsAllocate(buf
->Length
)) == NULL
)
2096 return (AE_NO_MEMORY
);
2097 rp
= (ACPI_RESOURCE
*)buf
->Pointer
;
2098 rp
->Type
= ACPI_RESOURCE_TYPE_END_TAG
;
2105 * Scan the current buffer looking for the terminator.
2106 * This will either find the terminator or hit the end
2107 * of the buffer and return an error.
2109 rp
= (ACPI_RESOURCE
*)buf
->Pointer
;
2111 /* Range check, don't go outside the buffer */
2112 if (rp
>= (ACPI_RESOURCE
*)((u_int8_t
*)buf
->Pointer
+ buf
->Length
))
2113 return (AE_BAD_PARAMETER
);
2114 if (rp
->Type
== ACPI_RESOURCE_TYPE_END_TAG
|| rp
->Length
== 0)
2116 rp
= ACPI_NEXT_RESOURCE(rp
);
2120 * Check the size of the buffer and expand if required.
2123 * size of existing resources before terminator +
2124 * size of new resource and header +
2125 * size of terminator.
2127 * Note that this loop should really only run once, unless
2128 * for some reason we are stuffing a *really* huge resource.
2130 while ((((u_int8_t
*)rp
- (u_int8_t
*)buf
->Pointer
) +
2131 res
->Length
+ ACPI_RS_SIZE_NO_DATA
+
2132 ACPI_RS_SIZE_MIN
) >= buf
->Length
) {
2133 if ((newp
= AcpiOsAllocate(buf
->Length
* 2)) == NULL
)
2134 return (AE_NO_MEMORY
);
2135 bcopy(buf
->Pointer
, newp
, buf
->Length
);
2136 rp
= (ACPI_RESOURCE
*)((u_int8_t
*)newp
+
2137 ((u_int8_t
*)rp
- (u_int8_t
*)buf
->Pointer
));
2138 AcpiOsFree(buf
->Pointer
);
2139 buf
->Pointer
= newp
;
2140 buf
->Length
+= buf
->Length
;
2143 /* Insert the new resource. */
2144 bcopy(res
, rp
, res
->Length
+ ACPI_RS_SIZE_NO_DATA
);
2146 /* And add the terminator. */
2147 rp
= ACPI_NEXT_RESOURCE(rp
);
2148 rp
->Type
= ACPI_RESOURCE_TYPE_END_TAG
;
2155 * Set interrupt model.
2158 acpi_SetIntrModel(int model
)
2161 return (acpi_SetInteger(ACPI_ROOT_OBJECT
, "_PIC", model
));
2165 * DEPRECATED. This interface has serious deficiencies and will be
2168 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2169 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2172 acpi_SetSleepState(struct acpi_softc
*sc
, int state
)
2178 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2181 return (acpi_EnterSleepState(sc
, state
));
2185 acpi_sleep_force(void *arg
)
2187 struct acpi_softc
*sc
;
2189 kprintf("acpi: suspend request timed out, forcing sleep now\n");
2191 if (ACPI_FAILURE(acpi_EnterSleepState(sc
, sc
->acpi_next_sstate
)))
2192 kprintf("acpi: force sleep state S%d failed\n", sc
->acpi_next_sstate
);
2196 * Request that the system enter the given suspend state. All /dev/apm
2197 * devices and devd(8) will be notified. Userland then has a chance to
2198 * save state and acknowledge the request. The system sleeps once all
2202 acpi_ReqSleepState(struct acpi_softc
*sc
, int state
)
2205 struct apm_clone_data
*clone
;
2208 if (state
< ACPI_STATE_S1
|| state
> ACPI_STATE_S5
)
2211 /* S5 (soft-off) should be entered directly with no waiting. */
2212 if (state
== ACPI_STATE_S5
) {
2213 if (ACPI_SUCCESS(acpi_EnterSleepState(sc
, state
)))
2219 #if !defined(__i386__)
2220 /* This platform does not support acpi suspend/resume. */
2221 return (EOPNOTSUPP
);
2224 /* If a suspend request is already in progress, just return. */
2226 if (sc
->acpi_next_sstate
!= 0) {
2231 /* Record the pending state and notify all apm devices. */
2232 sc
->acpi_next_sstate
= state
;
2234 STAILQ_FOREACH(clone
, &sc
->apm_cdevs
, entries
) {
2235 clone
->notify_status
= APM_EV_NONE
;
2236 if ((clone
->flags
& ACPI_EVF_DEVD
) == 0) {
2237 KNOTE(&clone
->sel_read
.si_note
, 0);
2242 /* If devd(8) is not running, immediately enter the sleep state. */
2243 if (devctl_process_running() == FALSE
) {
2245 if (ACPI_SUCCESS(acpi_EnterSleepState(sc
, sc
->acpi_next_sstate
))) {
2252 /* Now notify devd(8) also. */
2253 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT
, state
);
2256 * Set a timeout to fire if userland doesn't ack the suspend request
2257 * in time. This way we still eventually go to sleep if we were
2258 * overheating or running low on battery, even if userland is hung.
2259 * We cancel this timeout once all userland acks are in or the
2260 * suspend request is aborted.
2262 callout_reset(&sc
->susp_force_to
, 10 * hz
, acpi_sleep_force
, sc
);
2268 * Acknowledge (or reject) a pending sleep state. The caller has
2269 * prepared for suspend and is now ready for it to proceed. If the
2270 * error argument is non-zero, it indicates suspend should be cancelled
2271 * and gives an errno value describing why. Once all votes are in,
2272 * we suspend the system.
2275 acpi_AckSleepState(struct apm_clone_data
*clone
, int error
)
2277 struct acpi_softc
*sc
;
2280 #if !defined(__i386__)
2281 /* This platform does not support acpi suspend/resume. */
2282 return (EOPNOTSUPP
);
2285 /* If no pending sleep state, return an error. */
2287 sc
= clone
->acpi_sc
;
2288 if (sc
->acpi_next_sstate
== 0) {
2293 /* Caller wants to abort suspend process. */
2295 sc
->acpi_next_sstate
= 0;
2296 callout_stop(&sc
->susp_force_to
);
2297 kprintf("acpi: listener on %s cancelled the pending suspend\n",
2298 devtoname(clone
->cdev
));
2304 * Mark this device as acking the suspend request. Then, walk through
2305 * all devices, seeing if they agree yet. We only count devices that
2306 * are writable since read-only devices couldn't ack the request.
2308 clone
->notify_status
= APM_EV_ACKED
;
2310 STAILQ_FOREACH(clone
, &sc
->apm_cdevs
, entries
) {
2311 if ((clone
->flags
& ACPI_EVF_WRITE
) != 0 &&
2312 clone
->notify_status
!= APM_EV_ACKED
) {
2318 /* If all devices have voted "yes", we will suspend now. */
2320 callout_stop(&sc
->susp_force_to
);
2324 if (ACPI_FAILURE(acpi_EnterSleepState(sc
, sc
->acpi_next_sstate
)))
2332 acpi_sleep_enable(void *arg
)
2334 ((struct acpi_softc
*)arg
)->acpi_sleep_disabled
= 0;
2337 enum acpi_sleep_state
{
2340 ACPI_SS_DEV_SUSPEND
,
2346 * Enter the desired system sleep state.
2348 * Currently we support S1-S5 but S4 is only S4BIOS
2351 acpi_EnterSleepState(struct acpi_softc
*sc
, int state
)
2356 enum acpi_sleep_state slp_state
;
2358 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__
, state
);
2360 /* Re-entry once we're suspending is not allowed. */
2363 if (sc
->acpi_sleep_disabled
) {
2365 kprintf("acpi: suspend request ignored (not ready yet)\n");
2368 sc
->acpi_sleep_disabled
= 1;
2372 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2373 * drivers need this.
2376 slp_state
= ACPI_SS_NONE
;
2382 status
= AcpiGetSleepTypeData(state
, &TypeA
, &TypeB
);
2383 if (status
== AE_NOT_FOUND
) {
2384 device_printf(sc
->acpi_dev
,
2385 "Sleep state S%d not supported by BIOS\n", state
);
2387 } else if (ACPI_FAILURE(status
)) {
2388 device_printf(sc
->acpi_dev
, "AcpiGetSleepTypeData failed - %s\n",
2389 AcpiFormatException(status
));
2393 sc
->acpi_sstate
= state
;
2395 /* Enable any GPEs as appropriate and requested by the user. */
2396 acpi_wake_prep_walk(state
);
2397 slp_state
= ACPI_SS_GPE_SET
;
2400 * Inform all devices that we are going to sleep. If at least one
2401 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2403 * XXX Note that a better two-pass approach with a 'veto' pass
2404 * followed by a "real thing" pass would be better, but the current
2405 * bus interface does not provide for this.
2407 if (DEVICE_SUSPEND(root_bus
) != 0) {
2408 device_printf(sc
->acpi_dev
, "device_suspend failed\n");
2411 slp_state
= ACPI_SS_DEV_SUSPEND
;
2413 /* If testing device suspend only, back out of everything here. */
2414 if (acpi_susp_bounce
)
2417 status
= AcpiEnterSleepStatePrep(state
);
2418 if (ACPI_FAILURE(status
)) {
2419 device_printf(sc
->acpi_dev
, "AcpiEnterSleepStatePrep failed - %s\n",
2420 AcpiFormatException(status
));
2423 slp_state
= ACPI_SS_SLP_PREP
;
2425 if (sc
->acpi_sleep_delay
> 0)
2426 DELAY(sc
->acpi_sleep_delay
* 1000000);
2428 if (state
!= ACPI_STATE_S1
) {
2429 acpi_sleep_machdep(sc
, state
);
2431 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2432 if (state
== ACPI_STATE_S4
)
2435 ACPI_DISABLE_IRQS();
2436 status
= AcpiEnterSleepState(state
);
2437 if (ACPI_FAILURE(status
)) {
2438 device_printf(sc
->acpi_dev
, "AcpiEnterSleepState failed - %s\n",
2439 AcpiFormatException(status
));
2443 slp_state
= ACPI_SS_SLEPT
;
2447 * Shut down cleanly and power off. This will call us back through the
2448 * shutdown handlers.
2450 shutdown_nice(RB_POWEROFF
);
2454 status
= AE_BAD_PARAMETER
;
2459 * Back out state according to how far along we got in the suspend
2460 * process. This handles both the error and success cases.
2462 sc
->acpi_next_sstate
= 0;
2463 if (slp_state
>= ACPI_SS_GPE_SET
) {
2464 acpi_wake_prep_walk(state
);
2465 sc
->acpi_sstate
= ACPI_STATE_S0
;
2467 if (slp_state
>= ACPI_SS_SLP_PREP
)
2468 AcpiLeaveSleepState(state
);
2469 if (slp_state
>= ACPI_SS_DEV_SUSPEND
)
2470 DEVICE_RESUME(root_bus
);
2471 if (slp_state
>= ACPI_SS_SLEPT
)
2472 acpi_enable_fixed_events(sc
);
2474 /* Allow another sleep request after a while. */
2475 /* XXX: needs timeout */
2476 if (state
!= ACPI_STATE_S5
)
2477 acpi_sleep_enable(sc
);
2479 /* Run /etc/rc.resume after we are back. */
2480 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT
, state
);
2483 return_ACPI_STATUS (status
);
2486 /* Enable or disable the device's GPE. */
2488 acpi_wake_set_enable(device_t dev
, int enable
)
2490 struct acpi_prw_data prw
;
2494 /* Make sure the device supports waking the system and get the GPE. */
2495 if (acpi_parse_prw(acpi_get_handle(dev
), &prw
) != 0)
2498 flags
= acpi_get_flags(dev
);
2500 status
= AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
,
2502 if (ACPI_FAILURE(status
)) {
2503 device_printf(dev
, "enable wake failed\n");
2506 acpi_set_flags(dev
, flags
| ACPI_FLAG_WAKE_ENABLED
);
2508 status
= AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
,
2510 if (ACPI_FAILURE(status
)) {
2511 device_printf(dev
, "disable wake failed\n");
2514 acpi_set_flags(dev
, flags
& ~ACPI_FLAG_WAKE_ENABLED
);
2521 acpi_wake_sleep_prep(ACPI_HANDLE handle
, int sstate
)
2523 struct acpi_prw_data prw
;
2526 /* Check that this is a wake-capable device and get its GPE. */
2527 if (acpi_parse_prw(handle
, &prw
) != 0)
2529 dev
= acpi_get_device(handle
);
2532 * The destination sleep state must be less than (i.e., higher power)
2533 * or equal to the value specified by _PRW. If this GPE cannot be
2534 * enabled for the next sleep state, then disable it. If it can and
2535 * the user requested it be enabled, turn on any required power resources
2538 if (sstate
> prw
.lowest_wake
) {
2539 AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
, ACPI_GPE_DISABLE
);
2541 device_printf(dev
, "wake_prep disabled wake for %s (S%d)\n",
2542 acpi_name(handle
), sstate
);
2543 } else if (dev
&& (acpi_get_flags(dev
) & ACPI_FLAG_WAKE_ENABLED
) != 0) {
2544 acpi_pwr_wake_enable(handle
, 1);
2545 acpi_SetInteger(handle
, "_PSW", 1);
2547 device_printf(dev
, "wake_prep enabled for %s (S%d)\n",
2548 acpi_name(handle
), sstate
);
2555 acpi_wake_run_prep(ACPI_HANDLE handle
, int sstate
)
2557 struct acpi_prw_data prw
;
2561 * Check that this is a wake-capable device and get its GPE. Return
2562 * now if the user didn't enable this device for wake.
2564 if (acpi_parse_prw(handle
, &prw
) != 0)
2566 dev
= acpi_get_device(handle
);
2567 if (dev
== NULL
|| (acpi_get_flags(dev
) & ACPI_FLAG_WAKE_ENABLED
) == 0)
2571 * If this GPE couldn't be enabled for the previous sleep state, it was
2572 * disabled before going to sleep so re-enable it. If it was enabled,
2573 * clear _PSW and turn off any power resources it used.
2575 if (sstate
> prw
.lowest_wake
) {
2576 AcpiSetGpeWakeMask(prw
.gpe_handle
, prw
.gpe_bit
, ACPI_GPE_ENABLE
);
2578 device_printf(dev
, "run_prep re-enabled %s\n", acpi_name(handle
));
2580 acpi_SetInteger(handle
, "_PSW", 0);
2581 acpi_pwr_wake_enable(handle
, 0);
2583 device_printf(dev
, "run_prep cleaned up for %s\n",
2591 acpi_wake_prep(ACPI_HANDLE handle
, UINT32 level
, void *context
, void **status
)
2595 /* If suspending, run the sleep prep function, otherwise wake. */
2596 sstate
= *(int *)context
;
2597 if (AcpiGbl_SystemAwakeAndRunning
)
2598 acpi_wake_sleep_prep(handle
, sstate
);
2600 acpi_wake_run_prep(handle
, sstate
);
2604 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2606 acpi_wake_prep_walk(int sstate
)
2608 ACPI_HANDLE sb_handle
;
2610 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT
, "\\_SB_", &sb_handle
))) {
2611 AcpiWalkNamespace(ACPI_TYPE_DEVICE
, sb_handle
, 100,
2612 acpi_wake_prep
, NULL
, &sstate
, NULL
);
2617 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2619 acpi_wake_sysctl_walk(device_t dev
)
2622 int error
, i
, numdevs
;
2627 error
= device_get_children(dev
, &devlist
, &numdevs
);
2628 if (error
!= 0 || numdevs
== 0) {
2630 kfree(devlist
, M_TEMP
);
2633 for (i
= 0; i
< numdevs
; i
++) {
2635 acpi_wake_sysctl_walk(child
);
2636 if (!device_is_attached(child
))
2638 status
= AcpiEvaluateObject(acpi_get_handle(child
), "_PRW", NULL
, NULL
);
2639 if (ACPI_SUCCESS(status
)) {
2640 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child
),
2641 SYSCTL_CHILDREN(device_get_sysctl_tree(child
)), OID_AUTO
,
2642 "wake", CTLTYPE_INT
| CTLFLAG_RW
, child
, 0,
2643 acpi_wake_set_sysctl
, "I", "Device set to wake the system");
2646 kfree(devlist
, M_TEMP
);
2653 /* Enable or disable wake from userland. */
2655 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS
)
2660 dev
= (device_t
)arg1
;
2661 enable
= (acpi_get_flags(dev
) & ACPI_FLAG_WAKE_ENABLED
) ? 1 : 0;
2663 error
= sysctl_handle_int(oidp
, &enable
, 0, req
);
2664 if (error
!= 0 || req
->newptr
== NULL
)
2666 if (enable
!= 0 && enable
!= 1)
2669 return (acpi_wake_set_enable(dev
, enable
));
2673 /* Parse a device's _PRW into a structure. */
2675 acpi_parse_prw(ACPI_HANDLE h
, struct acpi_prw_data
*prw
)
2678 ACPI_BUFFER prw_buffer
;
2679 ACPI_OBJECT
*res
, *res2
;
2680 int error
, i
, power_count
;
2682 if (h
== NULL
|| prw
== NULL
)
2686 * The _PRW object (7.2.9) is only required for devices that have the
2687 * ability to wake the system from a sleeping state.
2690 prw_buffer
.Pointer
= NULL
;
2691 prw_buffer
.Length
= ACPI_ALLOCATE_BUFFER
;
2692 status
= AcpiEvaluateObject(h
, "_PRW", NULL
, &prw_buffer
);
2693 if (ACPI_FAILURE(status
))
2695 res
= (ACPI_OBJECT
*)prw_buffer
.Pointer
;
2698 if (!ACPI_PKG_VALID(res
, 2))
2702 * Element 1 of the _PRW object:
2703 * The lowest power system sleeping state that can be entered while still
2704 * providing wake functionality. The sleeping state being entered must
2705 * be less than (i.e., higher power) or equal to this value.
2707 if (acpi_PkgInt32(res
, 1, &prw
->lowest_wake
) != 0)
2711 * Element 0 of the _PRW object:
2713 switch (res
->Package
.Elements
[0].Type
) {
2714 case ACPI_TYPE_INTEGER
:
2716 * If the data type of this package element is numeric, then this
2717 * _PRW package element is the bit index in the GPEx_EN, in the
2718 * GPE blocks described in the FADT, of the enable bit that is
2719 * enabled for the wake event.
2721 prw
->gpe_handle
= NULL
;
2722 prw
->gpe_bit
= res
->Package
.Elements
[0].Integer
.Value
;
2725 case ACPI_TYPE_PACKAGE
:
2727 * If the data type of this package element is a package, then this
2728 * _PRW package element is itself a package containing two
2729 * elements. The first is an object reference to the GPE Block
2730 * device that contains the GPE that will be triggered by the wake
2731 * event. The second element is numeric and it contains the bit
2732 * index in the GPEx_EN, in the GPE Block referenced by the
2733 * first element in the package, of the enable bit that is enabled for
2736 * For example, if this field is a package then it is of the form:
2737 * Package() {\_SB.PCI0.ISA.GPE, 2}
2739 res2
= &res
->Package
.Elements
[0];
2740 if (!ACPI_PKG_VALID(res2
, 2))
2742 prw
->gpe_handle
= acpi_GetReference(NULL
, &res2
->Package
.Elements
[0]);
2743 if (prw
->gpe_handle
== NULL
)
2745 if (acpi_PkgInt32(res2
, 1, &prw
->gpe_bit
) != 0)
2753 /* Elements 2 to N of the _PRW object are power resources. */
2754 power_count
= res
->Package
.Count
- 2;
2755 if (power_count
> ACPI_PRW_MAX_POWERRES
) {
2756 kprintf("ACPI device %s has too many power resources\n", acpi_name(h
));
2759 prw
->power_res_count
= power_count
;
2760 for (i
= 0; i
< power_count
; i
++)
2761 prw
->power_res
[i
] = res
->Package
.Elements
[i
];
2764 if (prw_buffer
.Pointer
!= NULL
)
2765 AcpiOsFree(prw_buffer
.Pointer
);
2770 * ACPI Event Handlers
2773 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2776 acpi_system_eventhandler_sleep(void *arg
, int state
)
2780 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__
, state
);
2782 /* Check if button action is disabled. */
2783 if (state
== ACPI_S_STATES_MAX
+ 1)
2786 /* Request that the system prepare to enter the given suspend state. */
2787 ret
= acpi_ReqSleepState((struct acpi_softc
*)arg
, state
);
2789 kprintf("acpi: request to enter state S%d failed (err %d)\n",
2796 acpi_system_eventhandler_wakeup(void *arg
, int state
)
2799 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__
, state
);
2801 /* Currently, nothing to do for wakeup. */
2807 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2810 acpi_event_power_button_sleep(void *context
)
2812 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
2814 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
2816 EVENTHANDLER_INVOKE(acpi_sleep_event
, sc
->acpi_power_button_sx
);
2818 return_VALUE (ACPI_INTERRUPT_HANDLED
);
2822 acpi_event_power_button_wake(void *context
)
2824 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
2826 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
2828 EVENTHANDLER_INVOKE(acpi_wakeup_event
, sc
->acpi_power_button_sx
);
2830 return_VALUE (ACPI_INTERRUPT_HANDLED
);
2834 acpi_event_sleep_button_sleep(void *context
)
2836 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
2838 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
2840 EVENTHANDLER_INVOKE(acpi_sleep_event
, sc
->acpi_sleep_button_sx
);
2842 return_VALUE (ACPI_INTERRUPT_HANDLED
);
2846 acpi_event_sleep_button_wake(void *context
)
2848 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
2850 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
2852 EVENTHANDLER_INVOKE(acpi_wakeup_event
, sc
->acpi_sleep_button_sx
);
2854 return_VALUE (ACPI_INTERRUPT_HANDLED
);
2858 * XXX This static buffer is suboptimal. There is no locking so only
2859 * use this for single-threaded callers.
2862 acpi_name(ACPI_HANDLE handle
)
2865 static char data
[256];
2867 buf
.Length
= sizeof(data
);
2870 if (handle
&& ACPI_SUCCESS(AcpiGetName(handle
, ACPI_FULL_PATHNAME
, &buf
)))
2872 return ("(unknown)");
2876 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2877 * parts of the namespace.
2880 acpi_avoid(ACPI_HANDLE handle
)
2882 char *cp
, *env
, *np
;
2885 np
= acpi_name(handle
);
2888 if ((env
= kgetenv("debug.acpi.avoid")) == NULL
)
2891 /* Scan the avoid list checking for a match */
2894 while (*cp
!= 0 && isspace(*cp
))
2899 while (cp
[len
] != 0 && !isspace(cp
[len
]))
2901 if (!strncmp(cp
, np
, len
)) {
2913 * Debugging/bug-avoidance. Disable ACPI subsystem components.
2916 acpi_disabled(char *subsys
)
2921 if ((env
= kgetenv("debug.acpi.disabled")) == NULL
)
2923 if (strcmp(env
, "all") == 0) {
2928 /* Scan the disable list, checking for a match. */
2931 while (*cp
!= '\0' && isspace(*cp
))
2936 while (cp
[len
] != '\0' && !isspace(cp
[len
]))
2938 if (strncmp(cp
, subsys
, len
) == 0) {
2950 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
2951 * components are enabled by default. The ones that are not have to be
2952 * enabled via debug.acpi.enabled.
2955 acpi_enabled(char *subsys
)
2960 if ((env
= kgetenv("debug.acpi.enabled")) == NULL
)
2962 if (strcmp(env
, "all") == 0) {
2967 /* Scan the enable list, checking for a match. */
2970 while (*cp
!= '\0' && isspace(*cp
))
2975 while (cp
[len
] != '\0' && !isspace(cp
[len
]))
2977 if (strncmp(cp
, subsys
, len
) == 0) {
2989 * Control interface.
2991 * We multiplex ioctls for all participating ACPI devices here. Individual
2992 * drivers wanting to be accessible via /dev/acpi should use the
2993 * register/deregister interface to make their handlers visible.
2995 struct acpi_ioctl_hook
2997 TAILQ_ENTRY(acpi_ioctl_hook
) link
;
3003 static TAILQ_HEAD(,acpi_ioctl_hook
) acpi_ioctl_hooks
;
3004 static int acpi_ioctl_hooks_initted
;
3007 acpi_register_ioctl(u_long cmd
, acpi_ioctl_fn fn
, void *arg
)
3009 struct acpi_ioctl_hook
*hp
;
3011 if ((hp
= kmalloc(sizeof(*hp
), M_ACPIDEV
, M_NOWAIT
)) == NULL
)
3018 if (acpi_ioctl_hooks_initted
== 0) {
3019 TAILQ_INIT(&acpi_ioctl_hooks
);
3020 acpi_ioctl_hooks_initted
= 1;
3022 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks
, hp
, link
);
3029 acpi_deregister_ioctl(u_long cmd
, acpi_ioctl_fn fn
)
3031 struct acpi_ioctl_hook
*hp
;
3034 TAILQ_FOREACH(hp
, &acpi_ioctl_hooks
, link
)
3035 if (hp
->cmd
== cmd
&& hp
->fn
== fn
)
3039 TAILQ_REMOVE(&acpi_ioctl_hooks
, hp
, link
);
3040 kfree(hp
, M_ACPIDEV
);
3046 acpiopen(struct dev_open_args
*ap
)
3052 acpiclose(struct dev_close_args
*ap
)
3058 acpiioctl(struct dev_ioctl_args
*ap
)
3060 struct acpi_softc
*sc
;
3061 struct acpi_ioctl_hook
*hp
;
3066 sc
= ap
->a_head
.a_dev
->si_drv1
;
3069 * Scan the list of registered ioctls, looking for handlers.
3072 if (acpi_ioctl_hooks_initted
)
3073 TAILQ_FOREACH(hp
, &acpi_ioctl_hooks
, link
) {
3074 if (hp
->cmd
== ap
->a_cmd
)
3079 return (hp
->fn(ap
->a_cmd
, ap
->a_data
, hp
->arg
));
3082 * Core ioctls are not permitted for non-writable user.
3083 * Currently, other ioctls just fetch information.
3084 * Not changing system behavior.
3086 if ((ap
->a_fflag
& FWRITE
) == 0)
3089 /* Core system ioctls. */
3090 switch (ap
->a_cmd
) {
3091 case ACPIIO_REQSLPSTATE
:
3092 state
= *(int *)ap
->a_data
;
3093 if (state
!= ACPI_STATE_S5
)
3094 error
= acpi_ReqSleepState(sc
, state
);
3096 kprintf("power off via acpi ioctl not supported\n");
3100 case ACPIIO_ACKSLPSTATE
:
3103 error
= *(int *)ap
->a_data
;
3104 error
= acpi_AckSleepState(sc
->acpi_clone
, error
);
3107 case ACPIIO_SETSLPSTATE
: /* DEPRECATED */
3109 state
= *(int *)ap
->a_data
;
3110 if (state
>= ACPI_STATE_S0
&& state
<= ACPI_S_STATES_MAX
)
3111 if (ACPI_SUCCESS(acpi_SetSleepState(sc
, state
)))
3122 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
)
3126 UINT8 state
, TypeA
, TypeB
;
3128 sbuf_new(&sb
, NULL
, 32, SBUF_AUTOEXTEND
);
3129 for (state
= ACPI_STATE_S1
; state
< ACPI_S_STATES_MAX
+ 1; state
++)
3130 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state
, &TypeA
, &TypeB
)))
3131 sbuf_printf(&sb
, "S%d ", state
);
3134 error
= sysctl_handle_string(oidp
, sbuf_data(&sb
), sbuf_len(&sb
), req
);
3140 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
)
3142 char sleep_state
[10];
3144 u_int new_state
, old_state
;
3146 old_state
= *(u_int
*)oidp
->oid_arg1
;
3147 if (old_state
> ACPI_S_STATES_MAX
+ 1)
3148 strlcpy(sleep_state
, "unknown", sizeof(sleep_state
));
3150 strlcpy(sleep_state
, sleep_state_names
[old_state
], sizeof(sleep_state
));
3151 error
= sysctl_handle_string(oidp
, sleep_state
, sizeof(sleep_state
), req
);
3152 if (error
== 0 && req
->newptr
!= NULL
) {
3153 new_state
= ACPI_STATE_S0
;
3154 for (; new_state
<= ACPI_S_STATES_MAX
+ 1; new_state
++)
3155 if (strcmp(sleep_state
, sleep_state_names
[new_state
]) == 0)
3157 if (new_state
<= ACPI_S_STATES_MAX
+ 1) {
3158 if (new_state
!= old_state
)
3159 *(u_int
*)oidp
->oid_arg1
= new_state
;
3167 /* Inform devctl(4) when we receive a Notify. */
3169 acpi_UserNotify(const char *subsystem
, ACPI_HANDLE h
, uint8_t notify
)
3171 char notify_buf
[16];
3172 ACPI_BUFFER handle_buf
;
3175 if (subsystem
== NULL
)
3178 handle_buf
.Pointer
= NULL
;
3179 handle_buf
.Length
= ACPI_ALLOCATE_BUFFER
;
3180 status
= AcpiNsHandleToPathname(h
, &handle_buf
);
3181 if (ACPI_FAILURE(status
))
3183 ksnprintf(notify_buf
, sizeof(notify_buf
), "notify=0x%02x", notify
);
3184 devctl_notify("ACPI", subsystem
, handle_buf
.Pointer
, notify_buf
);
3185 AcpiOsFree(handle_buf
.Pointer
);
3190 * Support for parsing debug options from the kernel environment.
3192 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3193 * by specifying the names of the bits in the debug.acpi.layer and
3194 * debug.acpi.level environment variables. Bits may be unset by
3195 * prefixing the bit name with !.
3203 static struct debugtag dbg_layer
[] = {
3204 {"ACPI_UTILITIES", ACPI_UTILITIES
},
3205 {"ACPI_HARDWARE", ACPI_HARDWARE
},
3206 {"ACPI_EVENTS", ACPI_EVENTS
},
3207 {"ACPI_TABLES", ACPI_TABLES
},
3208 {"ACPI_NAMESPACE", ACPI_NAMESPACE
},
3209 {"ACPI_PARSER", ACPI_PARSER
},
3210 {"ACPI_DISPATCHER", ACPI_DISPATCHER
},
3211 {"ACPI_EXECUTER", ACPI_EXECUTER
},
3212 {"ACPI_RESOURCES", ACPI_RESOURCES
},
3213 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER
},
3214 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES
},
3215 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER
},
3216 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS
},
3218 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER
},
3219 {"ACPI_BATTERY", ACPI_BATTERY
},
3220 {"ACPI_BUS", ACPI_BUS
},
3221 {"ACPI_BUTTON", ACPI_BUTTON
},
3222 {"ACPI_EC", ACPI_EC
},
3223 {"ACPI_FAN", ACPI_FAN
},
3224 {"ACPI_POWERRES", ACPI_POWERRES
},
3225 {"ACPI_PROCESSOR", ACPI_PROCESSOR
},
3226 {"ACPI_THERMAL", ACPI_THERMAL
},
3227 {"ACPI_TIMER", ACPI_TIMER
},
3228 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS
},
3232 static struct debugtag dbg_level
[] = {
3233 {"ACPI_LV_INIT", ACPI_LV_INIT
},
3234 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT
},
3235 {"ACPI_LV_INFO", ACPI_LV_INFO
},
3236 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS
},
3238 /* Trace verbosity level 1 [Standard Trace Level] */
3239 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES
},
3240 {"ACPI_LV_PARSE", ACPI_LV_PARSE
},
3241 {"ACPI_LV_LOAD", ACPI_LV_LOAD
},
3242 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH
},
3243 {"ACPI_LV_EXEC", ACPI_LV_EXEC
},
3244 {"ACPI_LV_NAMES", ACPI_LV_NAMES
},
3245 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION
},
3246 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD
},
3247 {"ACPI_LV_TABLES", ACPI_LV_TABLES
},
3248 {"ACPI_LV_VALUES", ACPI_LV_VALUES
},
3249 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS
},
3250 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES
},
3251 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS
},
3252 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE
},
3253 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1
},
3255 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3256 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS
},
3257 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS
},
3258 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS
},
3259 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2
},
3260 {"ACPI_LV_ALL", ACPI_LV_ALL
},
3262 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3263 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX
},
3264 {"ACPI_LV_THREADS", ACPI_LV_THREADS
},
3265 {"ACPI_LV_IO", ACPI_LV_IO
},
3266 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS
},
3267 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3
},
3269 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3270 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE
},
3271 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO
},
3272 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES
},
3273 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS
},
3274 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE
},
3279 acpi_parse_debug(char *cp
, struct debugtag
*tag
, UINT32
*flag
)
3291 while (*ep
&& !isspace(*ep
))
3302 for (i
= 0; tag
[i
].name
!= NULL
; i
++) {
3303 if (!strncmp(cp
, tag
[i
].name
, l
)) {
3305 *flag
|= tag
[i
].value
;
3307 *flag
&= ~tag
[i
].value
;
3315 acpi_set_debugging(void *junk
)
3317 char *layer
, *level
;
3324 layer
= kgetenv("debug.acpi.layer");
3325 level
= kgetenv("debug.acpi.level");
3326 if (layer
== NULL
&& level
== NULL
)
3329 kprintf("ACPI set debug");
3330 if (layer
!= NULL
) {
3331 if (strcmp("NONE", layer
) != 0)
3332 kprintf(" layer '%s'", layer
);
3333 acpi_parse_debug(layer
, &dbg_layer
[0], &AcpiDbgLayer
);
3336 if (level
!= NULL
) {
3337 if (strcmp("NONE", level
) != 0)
3338 kprintf(" level '%s'", level
);
3339 acpi_parse_debug(level
, &dbg_level
[0], &AcpiDbgLevel
);
3345 SYSINIT(acpi_debugging
, SI_BOOT1_TUNABLES
, SI_ORDER_ANY
, acpi_set_debugging
,
3349 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS
)
3352 struct debugtag
*tag
;
3355 if (sbuf_new(&sb
, NULL
, 128, SBUF_AUTOEXTEND
) == NULL
)
3357 if (strcmp(oidp
->oid_arg1
, "debug.acpi.layer") == 0) {
3358 tag
= &dbg_layer
[0];
3359 dbg
= &AcpiDbgLayer
;
3361 tag
= &dbg_level
[0];
3362 dbg
= &AcpiDbgLevel
;
3365 /* Get old values if this is a get request. */
3366 ACPI_SERIAL_BEGIN(acpi
);
3368 sbuf_cpy(&sb
, "NONE");
3369 } else if (req
->newptr
== NULL
) {
3370 for (; tag
->name
!= NULL
; tag
++) {
3371 if ((*dbg
& tag
->value
) == tag
->value
)
3372 sbuf_printf(&sb
, "%s ", tag
->name
);
3378 /* Copy out the old values to the user. */
3379 error
= SYSCTL_OUT(req
, sbuf_data(&sb
), sbuf_len(&sb
));
3382 /* If the user is setting a string, parse it. */
3383 if (error
== 0 && req
->newptr
!= NULL
) {
3385 ksetenv((char *)oidp
->oid_arg1
, (char *)req
->newptr
);
3386 acpi_set_debugging(NULL
);
3388 ACPI_SERIAL_END(acpi
);
3393 SYSCTL_PROC(_debug_acpi
, OID_AUTO
, layer
, CTLFLAG_RW
| CTLTYPE_STRING
,
3394 "debug.acpi.layer", 0, acpi_debug_sysctl
, "A", "");
3395 SYSCTL_PROC(_debug_acpi
, OID_AUTO
, level
, CTLFLAG_RW
| CTLTYPE_STRING
,
3396 "debug.acpi.level", 0, acpi_debug_sysctl
, "A", "");
3397 #endif /* ACPI_DEBUG */
3400 acpi_pm_func(u_long cmd
, void *arg
, ...)
3402 int state
, acpi_state
;
3404 struct acpi_softc
*sc
;
3409 case POWER_CMD_SUSPEND
:
3410 sc
= (struct acpi_softc
*)arg
;
3417 state
= va_arg(ap
, int);
3421 case POWER_SLEEP_STATE_STANDBY
:
3422 acpi_state
= sc
->acpi_standby_sx
;
3424 case POWER_SLEEP_STATE_SUSPEND
:
3425 acpi_state
= sc
->acpi_suspend_sx
;
3427 case POWER_SLEEP_STATE_HIBERNATE
:
3428 acpi_state
= ACPI_STATE_S4
;
3435 if (ACPI_FAILURE(acpi_EnterSleepState(sc
, acpi_state
)))
3448 acpi_pm_register(void *arg
)
3450 if (!cold
|| resource_disabled("acpi", 0))
3453 power_pm_register(POWER_PM_TYPE_ACPI
, acpi_pm_func
, NULL
);
3456 SYSINIT(power
, SI_BOOT2_KLD
, SI_ORDER_ANY
, acpi_pm_register
, 0);