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 #define CDEV_MAJOR 152
84 static struct dev_ops acpi_ops
= {
85 { "acpi", CDEV_MAJOR
, 0 },
91 /* Global mutex for locking access to the ACPI subsystem. */
92 struct lock acpi_lock
;
93 /* Bitmap of device quirks. */
96 static int acpi_modevent(struct module
*mod
, int event
, void *junk
);
97 static void acpi_identify(driver_t
*driver
, device_t parent
);
98 static int acpi_probe(device_t dev
);
99 static int acpi_attach(device_t dev
);
100 static int acpi_suspend(device_t dev
);
101 static int acpi_resume(device_t dev
);
102 static int acpi_shutdown(device_t dev
);
103 static device_t
acpi_add_child(device_t bus
, device_t parent
, int order
, const char *name
,
105 static int acpi_print_child(device_t bus
, device_t child
);
106 static void acpi_probe_nomatch(device_t bus
, device_t child
);
107 static void acpi_driver_added(device_t dev
, driver_t
*driver
);
108 static int acpi_read_ivar(device_t dev
, device_t child
, int index
,
110 static int acpi_write_ivar(device_t dev
, device_t child
, int index
,
112 static struct resource_list
*acpi_get_rlist(device_t dev
, device_t child
);
113 static int acpi_sysres_alloc(device_t dev
);
114 static struct resource
*acpi_alloc_resource(device_t bus
, device_t child
,
115 int type
, int *rid
, u_long start
, u_long end
,
116 u_long count
, u_int flags
);
117 static int acpi_release_resource(device_t bus
, device_t child
, int type
,
118 int rid
, struct resource
*r
);
119 static void acpi_delete_resource(device_t bus
, device_t child
, int type
,
121 static uint32_t acpi_isa_get_logicalid(device_t dev
);
122 static int acpi_isa_get_compatid(device_t dev
, uint32_t *cids
, int count
);
123 static char *acpi_device_id_probe(device_t bus
, device_t dev
, char **ids
);
124 static ACPI_STATUS
acpi_device_eval_obj(device_t bus
, device_t dev
,
125 ACPI_STRING pathname
, ACPI_OBJECT_LIST
*parameters
,
127 static int acpi_device_pwr_for_sleep(device_t bus
, device_t dev
,
129 static ACPI_STATUS
acpi_device_scan_cb(ACPI_HANDLE h
, UINT32 level
,
130 void *context
, void **retval
);
131 static ACPI_STATUS
acpi_device_scan_children(device_t bus
, device_t dev
,
132 int max_depth
, acpi_scan_cb_t user_fn
, void *arg
);
133 static int acpi_set_powerstate_method(device_t bus
, device_t child
,
135 static int acpi_isa_pnp_probe(device_t bus
, device_t child
,
136 struct isa_pnp_id
*ids
);
137 static void acpi_probe_children(device_t bus
);
138 static void acpi_probe_order(ACPI_HANDLE handle
, int *order
);
139 static ACPI_STATUS
acpi_probe_child(ACPI_HANDLE handle
, UINT32 level
,
140 void *context
, void **status
);
141 static ACPI_STATUS
acpi_EnterSleepState(struct acpi_softc
*sc
, int state
);
142 static void acpi_shutdown_final(void *arg
, int howto
);
143 static void acpi_enable_fixed_events(struct acpi_softc
*sc
);
144 static int acpi_wake_sleep_prep(ACPI_HANDLE handle
, int sstate
);
145 static int acpi_wake_run_prep(ACPI_HANDLE handle
, int sstate
);
146 static int acpi_wake_prep_walk(int sstate
);
147 static int acpi_wake_sysctl_walk(device_t dev
);
149 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS
);
151 static void acpi_system_eventhandler_sleep(void *arg
, int state
);
152 static void acpi_system_eventhandler_wakeup(void *arg
, int state
);
153 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
);
154 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
);
155 static int acpi_pm_func(u_long cmd
, void *arg
, ...);
156 static int acpi_child_location_str_method(device_t acdev
, device_t child
,
157 char *buf
, size_t buflen
);
158 static int acpi_child_pnpinfo_str_method(device_t acdev
, device_t child
,
159 char *buf
, size_t buflen
);
160 static void acpi_enable_pcie(void);
162 static device_method_t acpi_methods
[] = {
163 /* Device interface */
164 DEVMETHOD(device_identify
, acpi_identify
),
165 DEVMETHOD(device_probe
, acpi_probe
),
166 DEVMETHOD(device_attach
, acpi_attach
),
167 DEVMETHOD(device_shutdown
, acpi_shutdown
),
168 DEVMETHOD(device_detach
, bus_generic_detach
),
169 DEVMETHOD(device_suspend
, acpi_suspend
),
170 DEVMETHOD(device_resume
, acpi_resume
),
173 DEVMETHOD(bus_add_child
, acpi_add_child
),
174 DEVMETHOD(bus_print_child
, acpi_print_child
),
175 DEVMETHOD(bus_probe_nomatch
, acpi_probe_nomatch
),
176 DEVMETHOD(bus_driver_added
, acpi_driver_added
),
177 DEVMETHOD(bus_read_ivar
, acpi_read_ivar
),
178 DEVMETHOD(bus_write_ivar
, acpi_write_ivar
),
179 DEVMETHOD(bus_get_resource_list
, acpi_get_rlist
),
180 DEVMETHOD(bus_set_resource
, bus_generic_rl_set_resource
),
181 DEVMETHOD(bus_get_resource
, bus_generic_rl_get_resource
),
182 DEVMETHOD(bus_alloc_resource
, acpi_alloc_resource
),
183 DEVMETHOD(bus_release_resource
, acpi_release_resource
),
184 DEVMETHOD(bus_delete_resource
, acpi_delete_resource
),
185 DEVMETHOD(bus_child_pnpinfo_str
, acpi_child_pnpinfo_str_method
),
186 DEVMETHOD(bus_child_location_str
, acpi_child_location_str_method
),
187 DEVMETHOD(bus_activate_resource
, bus_generic_activate_resource
),
188 DEVMETHOD(bus_deactivate_resource
, bus_generic_deactivate_resource
),
189 DEVMETHOD(bus_setup_intr
, bus_generic_setup_intr
),
190 DEVMETHOD(bus_teardown_intr
, bus_generic_teardown_intr
),
193 DEVMETHOD(acpi_id_probe
, acpi_device_id_probe
),
194 DEVMETHOD(acpi_evaluate_object
, acpi_device_eval_obj
),
195 DEVMETHOD(acpi_pwr_for_sleep
, acpi_device_pwr_for_sleep
),
196 DEVMETHOD(acpi_scan_children
, acpi_device_scan_children
),
199 DEVMETHOD(pci_set_powerstate
, acpi_set_powerstate_method
),
202 DEVMETHOD(isa_pnp_probe
, acpi_isa_pnp_probe
),
207 static driver_t acpi_driver
= {
210 sizeof(struct acpi_softc
),
213 static devclass_t acpi_devclass
;
214 DRIVER_MODULE(acpi
, nexus
, acpi_driver
, acpi_devclass
, acpi_modevent
, 0);
215 MODULE_VERSION(acpi
, 1);
217 ACPI_SERIAL_DECL(acpi
, "ACPI serializer")
219 /* Local pools for managing system resources for ACPI child devices. */
220 static struct rman acpi_rman_io
, acpi_rman_mem
;
222 #define ACPI_MINIMUM_AWAKETIME 5
224 static const char* sleep_state_names
[] = {
225 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
227 SYSCTL_NODE(_debug
, OID_AUTO
, acpi
, CTLFLAG_RD
, NULL
, "ACPI debugging");
228 static char acpi_ca_version
[12];
229 SYSCTL_STRING(_debug_acpi
, OID_AUTO
, acpi_ca_version
, CTLFLAG_RD
,
230 acpi_ca_version
, 0, "Version of Intel ACPI-CA");
233 * Allow override of whether methods execute in parallel or not.
234 * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
235 * errors for AML that really can't handle parallel method execution.
236 * It is off by default since this breaks recursive methods and
237 * some IBMs use such code.
239 static int acpi_serialize_methods
;
240 TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods
);
242 /* Power devices off and on in suspend and resume. XXX Remove once tested. */
243 static int acpi_do_powerstate
= 1;
244 TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate
);
245 SYSCTL_INT(_debug_acpi
, OID_AUTO
, do_powerstate
, CTLFLAG_RW
,
246 &acpi_do_powerstate
, 1, "Turn off devices when suspending.");
248 /* Allow users to override quirks. */
249 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks
);
251 static int acpi_susp_bounce
;
252 SYSCTL_INT(_debug_acpi
, OID_AUTO
, suspend_bounce
, CTLFLAG_RW
,
253 &acpi_susp_bounce
, 0, "Don't actually suspend, just test devices.");
256 * ACPI can only be loaded as a module by the loader; activating it after
257 * system bootstrap time is not useful, and can be fatal to the system.
258 * It also cannot be unloaded, since the entire system bus heirarchy hangs
262 acpi_modevent(struct module
*mod
, int event
, void *junk
)
267 kprintf("The ACPI driver cannot be loaded after boot.\n");
272 if (!cold
&& power_pm_get_type() == POWER_PM_TYPE_ACPI
)
282 * Perform early initialization.
287 static int started
= 0;
291 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
293 /* Only run the startup code once. The MADT driver also calls this. */
295 return_VALUE (AE_OK
);
299 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
300 * if more tables exist.
302 if (ACPI_FAILURE(status
= AcpiInitializeTables(NULL
, 2, TRUE
))) {
303 kprintf("ACPI: Table initialisation failed: %s\n",
304 AcpiFormatException(status
));
305 return_VALUE (status
);
308 /* Set up any quirks we have for this system. */
310 if (acpi_quirks
== ACPI_Q_OK
)
311 acpi_table_quirks(&acpi_quirks
);
314 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
315 if (resource_int_value("acpi", 0, "disabled", &val
) == 0 && val
== 0)
316 acpi_quirks
&= ~ACPI_Q_BROKEN
;
317 if (acpi_quirks
& ACPI_Q_BROKEN
) {
318 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
322 return_VALUE (status
);
326 * Detect ACPI, perform early initialisation
329 acpi_identify(driver_t
*driver
, device_t parent
)
333 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
338 /* Check that we haven't been disabled with a hint. */
339 if (resource_disabled("acpi", 0))
342 /* Make sure we're not being doubly invoked. */
343 if (device_find_child(parent
, "acpi", 0) != NULL
)
346 ksnprintf(acpi_ca_version
, sizeof(acpi_ca_version
), "%x", ACPI_CA_VERSION
);
348 /* Initialize root tables. */
349 if (ACPI_FAILURE(acpi_Startup())) {
350 kprintf("ACPI: Try disabling either ACPI or apic support.\n");
354 /* Attach the actual ACPI device. */
355 if ((child
= BUS_ADD_CHILD(parent
, parent
, 10, "acpi", 0)) == NULL
) {
356 device_printf(parent
, "device_identify failed\n");
362 * Fetch some descriptive data from ACPI to put in our attach message.
365 acpi_probe(device_t dev
)
367 ACPI_TABLE_RSDP
*rsdp
;
368 ACPI_TABLE_HEADER
*rsdt
;
369 ACPI_PHYSICAL_ADDRESS paddr
;
370 char buf
[ACPI_OEM_ID_SIZE
+ ACPI_OEM_TABLE_ID_SIZE
+ 2];
373 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
375 if (power_pm_get_type() != POWER_PM_TYPE_NONE
&&
376 power_pm_get_type() != POWER_PM_TYPE_ACPI
) {
377 device_printf(dev
, "probe failed, other PM system enabled.\n");
378 return_VALUE (ENXIO
);
381 if ((paddr
= AcpiOsGetRootPointer()) == 0 ||
382 (rsdp
= AcpiOsMapMemory(paddr
, sizeof(ACPI_TABLE_RSDP
))) == NULL
)
383 return_VALUE (ENXIO
);
384 if (rsdp
->Revision
> 1 && rsdp
->XsdtPhysicalAddress
!= 0)
385 paddr
= (ACPI_PHYSICAL_ADDRESS
)rsdp
->XsdtPhysicalAddress
;
387 paddr
= (ACPI_PHYSICAL_ADDRESS
)rsdp
->RsdtPhysicalAddress
;
388 AcpiOsUnmapMemory(rsdp
, sizeof(ACPI_TABLE_RSDP
));
390 if ((rsdt
= AcpiOsMapMemory(paddr
, sizeof(ACPI_TABLE_HEADER
))) == NULL
)
391 return_VALUE (ENXIO
);
392 sbuf_new(&sb
, buf
, sizeof(buf
), SBUF_FIXEDLEN
);
393 sbuf_bcat(&sb
, rsdt
->OemId
, ACPI_OEM_ID_SIZE
);
396 sbuf_bcat(&sb
, rsdt
->OemTableId
, ACPI_OEM_TABLE_ID_SIZE
);
399 device_set_desc_copy(dev
, sbuf_data(&sb
));
401 AcpiOsUnmapMemory(rsdt
, sizeof(ACPI_TABLE_HEADER
));
407 acpi_attach(device_t dev
)
409 struct acpi_softc
*sc
;
410 ACPI_TABLE_FACS
*facs
;
417 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
419 sc
= device_get_softc(dev
);
421 callout_init(&sc
->susp_force_to
);
423 if ((error
= acpi_task_thread_init())) {
424 device_printf(dev
, "Could not start task thread.\n");
430 /* Initialize resource manager. */
431 acpi_rman_io
.rm_type
= RMAN_ARRAY
;
432 acpi_rman_io
.rm_start
= 0;
433 acpi_rman_io
.rm_end
= 0xffff;
434 acpi_rman_io
.rm_descr
= "ACPI I/O ports";
435 if (rman_init(&acpi_rman_io
) != 0)
436 panic("acpi rman_init IO ports failed");
437 acpi_rman_mem
.rm_type
= RMAN_ARRAY
;
438 acpi_rman_mem
.rm_start
= 0;
439 acpi_rman_mem
.rm_end
= ~0ul;
440 acpi_rman_mem
.rm_descr
= "ACPI I/O memory addresses";
441 if (rman_init(&acpi_rman_mem
) != 0)
442 panic("acpi rman_init memory failed");
444 /* Initialise the ACPI mutex */
445 ACPI_LOCK_INIT(acpi
, "acpi");
446 ACPI_SERIAL_INIT(acpi
);
449 * Set the globals from our tunables. This is needed because ACPI-CA
450 * uses UINT8 for some values and we have no tunable_byte.
452 AcpiGbl_AllMethodsSerialized
= acpi_serialize_methods
;
453 AcpiGbl_EnableInterpreterSlack
= TRUE
;
455 /* Start up the ACPI CA subsystem. */
456 status
= AcpiInitializeSubsystem();
457 if (ACPI_FAILURE(status
)) {
458 device_printf(dev
, "Could not initialize Subsystem: %s\n",
459 AcpiFormatException(status
));
463 /* Load ACPI name space. */
464 status
= AcpiLoadTables();
465 if (ACPI_FAILURE(status
)) {
466 device_printf(dev
, "Could not load Namespace: %s\n",
467 AcpiFormatException(status
));
471 /* Handle MCFG table if present. */
474 /* Install the default address space handlers. */
475 status
= AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT
,
476 ACPI_ADR_SPACE_SYSTEM_MEMORY
, ACPI_DEFAULT_HANDLER
, NULL
, NULL
);
477 if (ACPI_FAILURE(status
)) {
478 device_printf(dev
, "Could not initialise SystemMemory handler: %s\n",
479 AcpiFormatException(status
));
482 status
= AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT
,
483 ACPI_ADR_SPACE_SYSTEM_IO
, ACPI_DEFAULT_HANDLER
, NULL
, NULL
);
484 if (ACPI_FAILURE(status
)) {
485 device_printf(dev
, "Could not initialise SystemIO handler: %s\n",
486 AcpiFormatException(status
));
489 status
= AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT
,
490 ACPI_ADR_SPACE_PCI_CONFIG
, ACPI_DEFAULT_HANDLER
, NULL
, NULL
);
491 if (ACPI_FAILURE(status
)) {
492 device_printf(dev
, "could not initialise PciConfig handler: %s\n",
493 AcpiFormatException(status
));
498 * Note that some systems (specifically, those with namespace evaluation
499 * issues that require the avoidance of parts of the namespace) must
500 * avoid running _INI and _STA on everything, as well as dodging the final
503 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
505 * XXX We should arrange for the object init pass after we have attached
506 * all our child devices, but on many systems it works here.
509 if (ktestenv("debug.acpi.avoid"))
510 flags
= ACPI_NO_DEVICE_INIT
| ACPI_NO_OBJECT_INIT
;
512 /* Bring the hardware and basic handlers online. */
513 if (ACPI_FAILURE(status
= AcpiEnableSubsystem(flags
))) {
514 device_printf(dev
, "Could not enable ACPI: %s\n",
515 AcpiFormatException(status
));
520 * Call the ECDT probe function to provide EC functionality before
521 * the namespace has been evaluated.
523 * XXX This happens before the sysresource devices have been probed and
524 * attached so its resources come from nexus0. In practice, this isn't
525 * a problem but should be addressed eventually.
527 acpi_ec_ecdt_probe(dev
);
529 /* Bring device objects and regions online. */
530 if (ACPI_FAILURE(status
= AcpiInitializeObjects(flags
))) {
531 device_printf(dev
, "Could not initialize ACPI objects: %s\n",
532 AcpiFormatException(status
));
537 * Setup our sysctl tree.
539 * XXX: This doesn't check to make sure that none of these fail.
541 sysctl_ctx_init(&sc
->acpi_sysctl_ctx
);
542 sc
->acpi_sysctl_tree
= SYSCTL_ADD_NODE(&sc
->acpi_sysctl_ctx
,
543 SYSCTL_STATIC_CHILDREN(_hw
), OID_AUTO
,
544 device_get_name(dev
), CTLFLAG_RD
, 0, "");
545 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
546 OID_AUTO
, "supported_sleep_state", CTLTYPE_STRING
| CTLFLAG_RD
,
547 0, 0, acpi_supported_sleep_state_sysctl
, "A", "");
548 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
549 OID_AUTO
, "power_button_state", CTLTYPE_STRING
| CTLFLAG_RW
,
550 &sc
->acpi_power_button_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
551 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
552 OID_AUTO
, "sleep_button_state", CTLTYPE_STRING
| CTLFLAG_RW
,
553 &sc
->acpi_sleep_button_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
554 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
555 OID_AUTO
, "lid_switch_state", CTLTYPE_STRING
| CTLFLAG_RW
,
556 &sc
->acpi_lid_switch_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
557 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
558 OID_AUTO
, "standby_state", CTLTYPE_STRING
| CTLFLAG_RW
,
559 &sc
->acpi_standby_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
560 SYSCTL_ADD_PROC(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
561 OID_AUTO
, "suspend_state", CTLTYPE_STRING
| CTLFLAG_RW
,
562 &sc
->acpi_suspend_sx
, 0, acpi_sleep_state_sysctl
, "A", "");
563 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
564 OID_AUTO
, "sleep_delay", CTLFLAG_RW
, &sc
->acpi_sleep_delay
, 0,
566 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
567 OID_AUTO
, "s4bios", CTLFLAG_RW
, &sc
->acpi_s4bios
, 0, "S4BIOS mode");
568 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
569 OID_AUTO
, "verbose", CTLFLAG_RW
, &sc
->acpi_verbose
, 0, "verbose mode");
570 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
571 OID_AUTO
, "disable_on_reboot", CTLFLAG_RW
,
572 &sc
->acpi_do_disable
, 0, "Disable ACPI when rebooting/halting system");
573 SYSCTL_ADD_INT(&sc
->acpi_sysctl_ctx
, SYSCTL_CHILDREN(sc
->acpi_sysctl_tree
),
574 OID_AUTO
, "handle_reboot", CTLFLAG_RW
,
575 &sc
->acpi_handle_reboot
, 0, "Use ACPI Reset Register to reboot");
578 * Default to 1 second before sleeping to give some machines time to
581 sc
->acpi_sleep_delay
= 1;
583 sc
->acpi_verbose
= 1;
584 if ((env
= kgetenv("hw.acpi.verbose")) != NULL
) {
585 if (strcmp(env
, "0") != 0)
586 sc
->acpi_verbose
= 1;
590 /* Only enable S4BIOS by default if the FACS says it is available. */
591 status
= AcpiGetTable(ACPI_SIG_FACS
, 0, (ACPI_TABLE_HEADER
**)&facs
);
592 if (ACPI_FAILURE(status
)) {
593 device_printf(dev
, "couldn't get FACS: %s\n",
594 AcpiFormatException(status
));
598 if (facs
->Flags
& ACPI_FACS_S4_BIOS_PRESENT
)
602 * Dispatch the default sleep state to devices. The lid switch is set
603 * to NONE by default to avoid surprising users.
605 sc
->acpi_power_button_sx
= ACPI_STATE_S5
;
606 sc
->acpi_lid_switch_sx
= ACPI_S_STATES_MAX
+ 1;
607 sc
->acpi_standby_sx
= ACPI_STATE_S1
;
608 sc
->acpi_suspend_sx
= ACPI_STATE_S3
;
610 /* Pick the first valid sleep state for the sleep button default. */
611 sc
->acpi_sleep_button_sx
= ACPI_S_STATES_MAX
+ 1;
612 for (state
= ACPI_STATE_S1
; state
<= ACPI_STATE_S4
; state
++)
613 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state
, &TypeA
, &TypeB
))) {
614 sc
->acpi_sleep_button_sx
= state
;
618 acpi_enable_fixed_events(sc
);
621 * Scan the namespace and attach/initialise children.
624 /* Register our shutdown handler. */
625 EVENTHANDLER_REGISTER(shutdown_final
, acpi_shutdown_final
, sc
,
629 * Register our acpi event handlers.
630 * XXX should be configurable eg. via userland policy manager.
632 EVENTHANDLER_REGISTER(acpi_sleep_event
, acpi_system_eventhandler_sleep
,
633 sc
, ACPI_EVENT_PRI_LAST
);
634 EVENTHANDLER_REGISTER(acpi_wakeup_event
, acpi_system_eventhandler_wakeup
,
635 sc
, ACPI_EVENT_PRI_LAST
);
637 /* Flag our initial states. */
638 sc
->acpi_enabled
= 1;
639 sc
->acpi_sstate
= ACPI_STATE_S0
;
640 sc
->acpi_sleep_disabled
= 0;
641 /* Create the control device */
642 sc
->acpi_dev_t
= make_dev(&acpi_ops
, 0, UID_ROOT
, GID_WHEEL
, 0644,
644 sc
->acpi_dev_t
->si_drv1
= sc
;
646 if ((error
= acpi_machdep_init(dev
)))
649 /* Register ACPI again to pass the correct argument of pm_func. */
650 power_pm_register(POWER_PM_TYPE_ACPI
, acpi_pm_func
, sc
);
652 if (!acpi_disabled("bus"))
653 acpi_probe_children(dev
);
658 cputimer_intr_pmfixup();
659 return_VALUE (error
);
663 acpi_suspend(device_t dev
)
665 device_t child
, *devlist
;
666 int error
, i
, numdevs
, pstate
;
670 /* First give child devices a chance to suspend. */
671 error
= bus_generic_suspend(dev
);
676 * Now, set them into the appropriate power state, usually D3. If the
677 * device has an _SxD method for the next sleep state, use that power
680 device_get_children(dev
, &devlist
, &numdevs
);
681 for (i
= 0; i
< numdevs
; i
++) {
682 /* If the device is not attached, we've powered it down elsewhere. */
684 if (!device_is_attached(child
))
688 * Default to D3 for all sleep states. The _SxD method is optional
689 * so set the powerstate even if it's absent.
691 pstate
= PCI_POWERSTATE_D3
;
692 error
= acpi_device_pwr_for_sleep(device_get_parent(child
),
694 if ((error
== 0 || error
== ESRCH
) && acpi_do_powerstate
)
695 pci_set_powerstate(child
, pstate
);
697 kfree(devlist
, M_TEMP
);
704 acpi_resume(device_t dev
)
708 device_t child
, *devlist
;
713 * Put all devices in D0 before resuming them. Call _S0D on each one
714 * since some systems expect this.
716 device_get_children(dev
, &devlist
, &numdevs
);
717 for (i
= 0; i
< numdevs
; i
++) {
719 handle
= acpi_get_handle(child
);
721 AcpiEvaluateObject(handle
, "_S0D", NULL
, NULL
);
722 if (device_is_attached(child
) && acpi_do_powerstate
)
723 pci_set_powerstate(child
, PCI_POWERSTATE_D0
);
725 kfree(devlist
, M_TEMP
);
727 return (bus_generic_resume(dev
));
731 acpi_shutdown(device_t dev
)
736 /* Allow children to shutdown first. */
737 bus_generic_shutdown(dev
);
740 * Enable any GPEs that are able to power-on the system (i.e., RTC).
741 * Also, disable any that are not valid for this state (most).
743 acpi_wake_prep_walk(ACPI_STATE_S5
);
749 * Handle a new device being added
752 acpi_add_child(device_t bus
, device_t parent
, int order
, const char *name
, int unit
)
754 struct acpi_device
*ad
;
757 if ((ad
= kmalloc(sizeof(*ad
), M_ACPIDEV
, M_NOWAIT
| M_ZERO
)) == NULL
)
760 resource_list_init(&ad
->ad_rl
);
761 child
= device_add_child_ordered(parent
, order
, name
, unit
);
763 device_set_ivars(child
, ad
);
765 kfree(ad
, M_ACPIDEV
);
770 acpi_print_child(device_t bus
, device_t child
)
772 struct acpi_device
*adev
= device_get_ivars(child
);
773 struct resource_list
*rl
= &adev
->ad_rl
;
776 retval
+= bus_print_child_header(bus
, child
);
777 retval
+= resource_list_print_type(rl
, "port", SYS_RES_IOPORT
, "%#lx");
778 retval
+= resource_list_print_type(rl
, "iomem", SYS_RES_MEMORY
, "%#lx");
779 retval
+= resource_list_print_type(rl
, "irq", SYS_RES_IRQ
, "%ld");
780 retval
+= resource_list_print_type(rl
, "drq", SYS_RES_DRQ
, "%ld");
781 if (device_get_flags(child
))
782 retval
+= kprintf(" flags %#x", device_get_flags(child
));
783 retval
+= bus_print_child_footer(bus
, child
);
789 * If this device is an ACPI child but no one claimed it, attempt
790 * to power it off. We'll power it back up when a driver is added.
792 * XXX Disabled for now since many necessary devices (like fdc and
793 * ATA) don't claim the devices we created for them but still expect
794 * them to be powered up.
797 acpi_probe_nomatch(device_t bus
, device_t child
)
800 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
804 * If a new driver has a chance to probe a child, first power it up.
806 * XXX Disabled for now (see acpi_probe_nomatch for details).
809 acpi_driver_added(device_t dev
, driver_t
*driver
)
811 device_t child
, *devlist
;
814 DEVICE_IDENTIFY(driver
, dev
);
815 device_get_children(dev
, &devlist
, &numdevs
);
816 for (i
= 0; i
< numdevs
; i
++) {
818 if (device_get_state(child
) == DS_NOTPRESENT
) {
819 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
820 if (device_probe_and_attach(child
) != 0)
821 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
824 kfree(devlist
, M_TEMP
);
827 /* Location hint for devctl(8) */
829 acpi_child_location_str_method(device_t cbdev
, device_t child
, char *buf
,
832 struct acpi_device
*dinfo
= device_get_ivars(child
);
834 if (dinfo
->ad_handle
)
835 ksnprintf(buf
, buflen
, "handle=%s", acpi_name(dinfo
->ad_handle
));
837 ksnprintf(buf
, buflen
, "unknown");
841 /* PnP information for devctl(8) */
843 acpi_child_pnpinfo_str_method(device_t cbdev
, device_t child
, char *buf
,
846 ACPI_BUFFER adbuf
= {ACPI_ALLOCATE_BUFFER
, NULL
};
847 ACPI_DEVICE_INFO
*adinfo
;
848 struct acpi_device
*dinfo
= device_get_ivars(child
);
852 error
= AcpiGetObjectInfo(dinfo
->ad_handle
, &adbuf
);
853 adinfo
= (ACPI_DEVICE_INFO
*) adbuf
.Pointer
;
855 ksnprintf(buf
, buflen
, "unknown");
857 ksnprintf(buf
, buflen
, "_HID=%s _UID=%lu",
858 (adinfo
->Valid
& ACPI_VALID_HID
) ?
859 adinfo
->HardwareId
.Value
: "none",
860 (adinfo
->Valid
& ACPI_VALID_UID
) ?
861 strtoul(adinfo
->UniqueId
.Value
, &end
, 10) : 0);
869 * Handle per-device ivars
872 acpi_read_ivar(device_t dev
, device_t child
, int index
, uintptr_t *result
)
874 struct acpi_device
*ad
;
876 if ((ad
= device_get_ivars(child
)) == NULL
) {
877 kprintf("device has no ivars\n");
881 /* ACPI and ISA compatibility ivars */
883 case ACPI_IVAR_HANDLE
:
884 *(ACPI_HANDLE
*)result
= ad
->ad_handle
;
886 case ACPI_IVAR_MAGIC
:
887 *(uintptr_t *)result
= ad
->ad_magic
;
889 case ACPI_IVAR_PRIVATE
:
890 *(void **)result
= ad
->ad_private
;
892 case ACPI_IVAR_FLAGS
:
893 *(int *)result
= ad
->ad_flags
;
895 case ISA_IVAR_VENDORID
:
896 case ISA_IVAR_SERIAL
:
897 case ISA_IVAR_COMPATID
:
900 case ISA_IVAR_LOGICALID
:
901 *(int *)result
= acpi_isa_get_logicalid(child
);
911 acpi_write_ivar(device_t dev
, device_t child
, int index
, uintptr_t value
)
913 struct acpi_device
*ad
;
915 if ((ad
= device_get_ivars(child
)) == NULL
) {
916 kprintf("device has no ivars\n");
921 case ACPI_IVAR_HANDLE
:
922 ad
->ad_handle
= (ACPI_HANDLE
)value
;
924 case ACPI_IVAR_MAGIC
:
925 ad
->ad_magic
= (uintptr_t)value
;
927 case ACPI_IVAR_PRIVATE
:
928 ad
->ad_private
= (void *)value
;
930 case ACPI_IVAR_FLAGS
:
931 ad
->ad_flags
= (int)value
;
934 panic("bad ivar write request (%d)", index
);
942 * Handle child resource allocation/removal
944 static struct resource_list
*
945 acpi_get_rlist(device_t dev
, device_t child
)
947 struct acpi_device
*ad
;
949 ad
= device_get_ivars(child
);
954 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
955 * duplicates, we merge any in the sysresource attach routine.
958 acpi_sysres_alloc(device_t dev
)
960 struct resource
*res
;
961 struct resource_list
*rl
;
962 struct resource_list_entry
*rle
;
964 char *sysres_ids
[] = { "PNP0C01", "PNP0C02", NULL
};
968 * Probe/attach any sysresource devices. This would be unnecessary if we
969 * had multi-pass probe/attach.
971 if (device_get_children(dev
, &children
, &child_count
) != 0)
973 for (i
= 0; i
< child_count
; i
++) {
974 if (ACPI_ID_PROBE(dev
, children
[i
], sysres_ids
) != NULL
)
975 device_probe_and_attach(children
[i
]);
977 kfree(children
, M_TEMP
);
979 rl
= BUS_GET_RESOURCE_LIST(device_get_parent(dev
), dev
);
982 SLIST_FOREACH(rle
, rl
, link
) {
983 if (rle
->res
!= NULL
) {
984 device_printf(dev
, "duplicate resource for %lx\n", rle
->start
);
988 /* Only memory and IO resources are valid here. */
1000 /* Pre-allocate resource and add to our rman pool. */
1001 res
= BUS_ALLOC_RESOURCE(device_get_parent(dev
), dev
, rle
->type
,
1002 &rle
->rid
, rle
->start
, rle
->start
+ rle
->count
- 1, rle
->count
, 0);
1004 rman_manage_region(rm
, rman_get_start(res
), rman_get_end(res
));
1007 device_printf(dev
, "reservation of %lx, %lx (%d) failed\n",
1008 rle
->start
, rle
->count
, rle
->type
);
1013 static struct resource
*
1014 acpi_alloc_resource(device_t bus
, device_t child
, int type
, int *rid
,
1015 u_long start
, u_long end
, u_long count
, u_int flags
)
1018 struct acpi_device
*ad
= device_get_ivars(child
);
1019 struct resource_list
*rl
= &ad
->ad_rl
;
1020 struct resource_list_entry
*rle
;
1021 struct resource
*res
;
1026 /* We only handle memory and IO resources through rman. */
1028 case SYS_RES_IOPORT
:
1031 case SYS_RES_MEMORY
:
1032 rm
= &acpi_rman_mem
;
1038 ACPI_SERIAL_BEGIN(acpi
);
1041 * If this is an allocation of the "default" range for a given RID, and
1042 * we know what the resources for this device are (i.e., they're on the
1043 * child's resource list), use those start/end values.
1045 if (bus
== device_get_parent(child
) && start
== 0UL && end
== ~0UL) {
1046 rle
= resource_list_find(rl
, type
, *rid
);
1055 * If this is an allocation of a specific range, see if we can satisfy
1056 * the request from our system resource regions. If we can't, pass the
1057 * request up to the parent.
1059 if (start
+ count
- 1 == end
&& rm
!= NULL
)
1060 res
= rman_reserve_resource(rm
, start
, end
, count
, flags
& ~RF_ACTIVE
,
1063 res
= BUS_ALLOC_RESOURCE(device_get_parent(bus
), child
, type
, rid
,
1064 start
, end
, count
, flags
);
1066 rman_set_rid(res
, *rid
);
1068 /* If requested, activate the resource using the parent's method. */
1069 if (flags
& RF_ACTIVE
)
1070 if (bus_activate_resource(child
, type
, *rid
, res
) != 0) {
1071 rman_release_resource(res
);
1077 if (res
!= NULL
&& device_get_parent(child
) == bus
)
1081 * Since bus_config_intr() takes immediate effect, we cannot
1082 * configure the interrupt associated with a device when we
1083 * parse the resources but have to defer it until a driver
1084 * actually allocates the interrupt via bus_alloc_resource().
1086 * XXX: Should we handle the lookup failing?
1088 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child
, *rid
, res
, &ares
)))
1089 acpi_config_intr(child
, &ares
);
1091 kprintf("irq resource not found\n");
1096 ACPI_SERIAL_END(acpi
);
1101 acpi_release_resource(device_t bus
, device_t child
, int type
, int rid
,
1107 /* We only handle memory and IO resources through rman. */
1109 case SYS_RES_IOPORT
:
1112 case SYS_RES_MEMORY
:
1113 rm
= &acpi_rman_mem
;
1119 ACPI_SERIAL_BEGIN(acpi
);
1122 * If this resource belongs to one of our internal managers,
1123 * deactivate it and release it to the local pool. If it doesn't,
1124 * pass this request up to the parent.
1126 if (rm
!= NULL
&& rman_is_region_manager(r
, rm
)) {
1127 if (rman_get_flags(r
) & RF_ACTIVE
) {
1128 ret
= bus_deactivate_resource(child
, type
, rid
, r
);
1132 ret
= rman_release_resource(r
);
1134 ret
= BUS_RELEASE_RESOURCE(device_get_parent(bus
), child
, type
, rid
, r
);
1137 ACPI_SERIAL_END(acpi
);
1142 acpi_delete_resource(device_t bus
, device_t child
, int type
, int rid
)
1144 struct resource_list
*rl
;
1146 rl
= acpi_get_rlist(bus
, child
);
1147 resource_list_delete(rl
, type
, rid
);
1150 /* Allocate an IO port or memory resource, given its GAS. */
1152 acpi_bus_alloc_gas(device_t dev
, int *type
, int *rid
, ACPI_GENERIC_ADDRESS
*gas
,
1153 struct resource
**res
, u_int flags
)
1155 int error
, res_type
;
1158 if (type
== NULL
|| rid
== NULL
|| gas
== NULL
|| res
== NULL
)
1161 /* We only support memory and IO spaces. */
1162 switch (gas
->SpaceId
) {
1163 case ACPI_ADR_SPACE_SYSTEM_MEMORY
:
1164 res_type
= SYS_RES_MEMORY
;
1166 case ACPI_ADR_SPACE_SYSTEM_IO
:
1167 res_type
= SYS_RES_IOPORT
;
1170 return (EOPNOTSUPP
);
1174 * If the register width is less than 8, assume the BIOS author means
1175 * it is a bit field and just allocate a byte.
1177 if (gas
->BitWidth
&& gas
->BitWidth
< 8)
1180 /* Validate the address after we're sure we support the space. */
1181 if (gas
->Address
== 0 || gas
->BitWidth
== 0)
1184 bus_set_resource(dev
, res_type
, *rid
, gas
->Address
,
1186 *res
= bus_alloc_resource_any(dev
, res_type
, rid
, RF_ACTIVE
| flags
);
1191 bus_delete_resource(dev
, res_type
, *rid
);
1196 /* Probe _HID and _CID for compatible ISA PNP ids. */
1198 acpi_isa_get_logicalid(device_t dev
)
1200 ACPI_DEVICE_INFO
*devinfo
;
1206 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1210 buf
.Length
= ACPI_ALLOCATE_BUFFER
;
1212 /* Fetch and validate the HID. */
1213 if ((h
= acpi_get_handle(dev
)) == NULL
)
1215 error
= AcpiGetObjectInfo(h
, &buf
);
1216 if (ACPI_FAILURE(error
))
1218 devinfo
= (ACPI_DEVICE_INFO
*)buf
.Pointer
;
1220 if ((devinfo
->Valid
& ACPI_VALID_HID
) != 0)
1221 pnpid
= PNP_EISAID(devinfo
->HardwareId
.Value
);
1224 if (buf
.Pointer
!= NULL
)
1225 AcpiOsFree(buf
.Pointer
);
1226 return_VALUE (pnpid
);
1230 acpi_isa_get_compatid(device_t dev
, uint32_t *cids
, int count
)
1232 ACPI_DEVICE_INFO
*devinfo
;
1239 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1244 buf
.Length
= ACPI_ALLOCATE_BUFFER
;
1246 /* Fetch and validate the CID */
1247 if ((h
= acpi_get_handle(dev
)) == NULL
)
1249 error
= AcpiGetObjectInfo(h
, &buf
);
1250 if (ACPI_FAILURE(error
))
1252 devinfo
= (ACPI_DEVICE_INFO
*)buf
.Pointer
;
1253 if ((devinfo
->Valid
& ACPI_VALID_CID
) == 0)
1256 if (devinfo
->CompatibilityId
.Count
< count
)
1257 count
= devinfo
->CompatibilityId
.Count
;
1258 for (i
= 0; i
< count
; i
++) {
1259 if (strncmp(devinfo
->CompatibilityId
.Id
[i
].Value
, "PNP", 3) != 0)
1261 *pnpid
++ = PNP_EISAID(devinfo
->CompatibilityId
.Id
[i
].Value
);
1266 if (buf
.Pointer
!= NULL
)
1267 AcpiOsFree(buf
.Pointer
);
1268 return_VALUE (valid
);
1272 acpi_device_id_probe(device_t bus
, device_t dev
, char **ids
)
1277 h
= acpi_get_handle(dev
);
1278 if (ids
== NULL
|| h
== NULL
|| acpi_get_type(dev
) != ACPI_TYPE_DEVICE
)
1281 /* Try to match one of the array of IDs with a HID or CID. */
1282 for (i
= 0; ids
[i
] != NULL
; i
++) {
1283 if (acpi_MatchHid(h
, ids
[i
]))
1290 acpi_device_eval_obj(device_t bus
, device_t dev
, ACPI_STRING pathname
,
1291 ACPI_OBJECT_LIST
*parameters
, ACPI_BUFFER
*ret
)
1296 h
= ACPI_ROOT_OBJECT
;
1297 else if ((h
= acpi_get_handle(dev
)) == NULL
)
1298 return (AE_BAD_PARAMETER
);
1299 return (AcpiEvaluateObject(h
, pathname
, parameters
, ret
));
1303 acpi_device_pwr_for_sleep(device_t bus
, device_t dev
, int *dstate
)
1305 struct acpi_softc
*sc
;
1311 sc
= device_get_softc(bus
);
1312 handle
= acpi_get_handle(dev
);
1315 * XXX If we find these devices, don't try to power them down.
1316 * The serial and IRDA ports on my T23 hang the system when
1317 * set to D3 and it appears that such legacy devices may
1318 * need special handling in their drivers.
1320 if (handle
== NULL
||
1321 acpi_MatchHid(handle
, "PNP0500") ||
1322 acpi_MatchHid(handle
, "PNP0501") ||
1323 acpi_MatchHid(handle
, "PNP0502") ||
1324 acpi_MatchHid(handle
, "PNP0510") ||
1325 acpi_MatchHid(handle
, "PNP0511"))
1329 * Override next state with the value from _SxD, if present. If no
1330 * dstate argument was provided, don't fetch the return value.
1332 ksnprintf(sxd
, sizeof(sxd
), "_S%dD", sc
->acpi_sstate
);
1334 status
= acpi_GetInteger(handle
, sxd
, dstate
);
1336 status
= AcpiEvaluateObject(handle
, sxd
, NULL
, NULL
);
1353 /* Callback arg for our implementation of walking the namespace. */
1354 struct acpi_device_scan_ctx
{
1355 acpi_scan_cb_t user_fn
;
1361 acpi_device_scan_cb(ACPI_HANDLE h
, UINT32 level
, void *arg
, void **retval
)
1363 struct acpi_device_scan_ctx
*ctx
;
1364 device_t dev
, old_dev
;
1366 ACPI_OBJECT_TYPE type
;
1369 * Skip this device if we think we'll have trouble with it or it is
1370 * the parent where the scan began.
1372 ctx
= (struct acpi_device_scan_ctx
*)arg
;
1373 if (acpi_avoid(h
) || h
== ctx
->parent
)
1376 /* If this is not a valid device type (e.g., a method), skip it. */
1377 if (ACPI_FAILURE(AcpiGetType(h
, &type
)))
1379 if (type
!= ACPI_TYPE_DEVICE
&& type
!= ACPI_TYPE_PROCESSOR
&&
1380 type
!= ACPI_TYPE_THERMAL
&& type
!= ACPI_TYPE_POWER
)
1384 * Call the user function with the current device. If it is unchanged
1385 * afterwards, return. Otherwise, we update the handle to the new dev.
1387 old_dev
= acpi_get_device(h
);
1389 status
= ctx
->user_fn(h
, &dev
, level
, ctx
->arg
);
1390 if (ACPI_FAILURE(status
) || old_dev
== dev
)
1393 /* Remove the old child and its connection to the handle. */
1394 if (old_dev
!= NULL
) {
1395 device_delete_child(device_get_parent(old_dev
), old_dev
);
1396 AcpiDetachData(h
, acpi_fake_objhandler
);
1399 /* Recreate the handle association if the user created a device. */
1401 AcpiAttachData(h
, acpi_fake_objhandler
, dev
);
1407 acpi_device_scan_children(device_t bus
, device_t dev
, int max_depth
,
1408 acpi_scan_cb_t user_fn
, void *arg
)
1411 struct acpi_device_scan_ctx ctx
;
1413 if (acpi_disabled("children"))
1417 h
= ACPI_ROOT_OBJECT
;
1418 else if ((h
= acpi_get_handle(dev
)) == NULL
)
1419 return (AE_BAD_PARAMETER
);
1420 ctx
.user_fn
= user_fn
;
1423 return (AcpiWalkNamespace(ACPI_TYPE_ANY
, h
, max_depth
,
1424 acpi_device_scan_cb
, &ctx
, NULL
));
1428 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1429 * device power states since it's close enough to ACPI.
1432 acpi_set_powerstate_method(device_t bus
, device_t child
, int state
)
1439 h
= acpi_get_handle(child
);
1440 if (state
< ACPI_STATE_D0
|| state
> ACPI_STATE_D3
)
1445 /* Ignore errors if the power methods aren't present. */
1446 status
= acpi_pwr_switch_consumer(h
, state
);
1447 if (ACPI_FAILURE(status
) && status
!= AE_NOT_FOUND
1448 && status
!= AE_BAD_PARAMETER
)
1449 device_printf(bus
, "failed to set ACPI power state D%d on %s: %s\n",
1450 state
, acpi_name(h
), AcpiFormatException(status
));
1456 acpi_isa_pnp_probe(device_t bus
, device_t child
, struct isa_pnp_id
*ids
)
1458 int result
, cid_count
, i
;
1459 uint32_t lid
, cids
[8];
1461 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1464 * ISA-style drivers attached to ACPI may persist and
1465 * probe manually if we return ENOENT. We never want
1466 * that to happen, so don't ever return it.
1470 /* Scan the supplied IDs for a match */
1471 lid
= acpi_isa_get_logicalid(child
);
1472 cid_count
= acpi_isa_get_compatid(child
, cids
, 8);
1473 while (ids
&& ids
->ip_id
) {
1474 if (lid
== ids
->ip_id
) {
1478 for (i
= 0; i
< cid_count
; i
++) {
1479 if (cids
[i
] == ids
->ip_id
) {
1488 if (result
== 0 && ids
->ip_desc
)
1489 device_set_desc(child
, ids
->ip_desc
);
1491 return_VALUE (result
);
1495 * Look for a MCFG table. If it is present, use the settings for
1496 * domain (segment) 0 to setup PCI config space access via the memory
1500 acpi_enable_pcie(void)
1502 ACPI_TABLE_HEADER
*hdr
;
1503 ACPI_MCFG_ALLOCATION
*alloc
, *end
;
1506 status
= AcpiGetTable(ACPI_SIG_MCFG
, 1, &hdr
);
1507 if (ACPI_FAILURE(status
))
1510 end
= (ACPI_MCFG_ALLOCATION
*)((char *)hdr
+ hdr
->Length
);
1511 alloc
= (ACPI_MCFG_ALLOCATION
*)((ACPI_TABLE_MCFG
*)hdr
+ 1);
1512 while (alloc
< end
) {
1513 if (alloc
->PciSegment
== 0) {
1514 pcie_cfgregopen(alloc
->Address
, alloc
->StartBusNumber
,
1515 alloc
->EndBusNumber
);
1523 * Scan all of the ACPI namespace and attach child devices.
1525 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1526 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1527 * However, in violation of the spec, some systems place their PCI link
1528 * devices in \, so we have to walk the whole namespace. We check the
1529 * type of namespace nodes, so this should be ok.
1532 acpi_probe_children(device_t bus
)
1535 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1538 * Scan the namespace and insert placeholders for all the devices that
1539 * we find. We also probe/attach any early devices.
1541 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1542 * we want to create nodes for all devices, not just those that are
1543 * currently present. (This assumes that we don't want to create/remove
1544 * devices as they appear, which might be smarter.)
1546 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "namespace scan\n"));
1547 AcpiWalkNamespace(ACPI_TYPE_ANY
, ACPI_ROOT_OBJECT
, 100, acpi_probe_child
,
1550 /* Pre-allocate resources for our rman from any sysresource devices. */
1551 acpi_sysres_alloc(bus
);
1552 /* Create any static children by calling device identify methods. */
1553 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "device identify routines\n"));
1554 bus_generic_probe(bus
);
1556 /* Probe/attach all children, created staticly and from the namespace. */
1557 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "first bus_generic_attach\n"));
1558 bus_generic_attach(bus
);
1561 * Some of these children may have attached others as part of their attach
1562 * process (eg. the root PCI bus driver), so rescan.
1564 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "second bus_generic_attach\n"));
1565 bus_generic_attach(bus
);
1567 /* Attach wake sysctls. */
1568 acpi_wake_sysctl_walk(bus
);
1570 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "done attaching children\n"));
1575 * Determine the probe order for a given device.
1578 acpi_probe_order(ACPI_HANDLE handle
, int *order
)
1580 ACPI_OBJECT_TYPE type
;
1583 * 1. I/O port and memory system resource holders
1584 * 2. Embedded controllers (to handle early accesses)
1585 * 3. PCI Link Devices
1588 AcpiGetType(handle
, &type
);
1589 if (acpi_MatchHid(handle
, "PNP0C01") || acpi_MatchHid(handle
, "PNP0C02"))
1591 else if (acpi_MatchHid(handle
, "PNP0C09"))
1593 else if (acpi_MatchHid(handle
, "PNP0C0F"))
1595 else if (type
== ACPI_TYPE_PROCESSOR
)
1600 * Evaluate a child device and determine whether we might attach a device to
1604 acpi_probe_child(ACPI_HANDLE handle
, UINT32 level
, void *context
, void **status
)
1606 ACPI_OBJECT_TYPE type
;
1608 device_t bus
, child
;
1610 char *handle_str
, **search
;
1611 static char *scopes
[] = {"\\_PR_", "\\_TZ_", "\\_SI_", "\\_SB_", NULL
};
1613 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
1615 /* Skip this device if we think we'll have trouble with it. */
1616 if (acpi_avoid(handle
))
1617 return_ACPI_STATUS (AE_OK
);
1619 bus
= (device_t
)context
;
1620 if (ACPI_SUCCESS(AcpiGetType(handle
, &type
))) {
1622 case ACPI_TYPE_DEVICE
:
1623 case ACPI_TYPE_PROCESSOR
:
1624 case ACPI_TYPE_THERMAL
:
1625 case ACPI_TYPE_POWER
:
1626 if (acpi_disabled("children"))
1630 * Since we scan from \, be sure to skip system scope objects.
1631 * At least \_SB and \_TZ are detected as devices (ACPI-CA bug?)
1633 handle_str
= acpi_name(handle
);
1634 for (search
= scopes
; *search
!= NULL
; search
++) {
1635 if (strcmp(handle_str
, *search
) == 0)
1638 if (*search
!= NULL
)
1642 * Create a placeholder device for this node. Sort the
1643 * placeholder so that the probe/attach passes will run
1644 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1645 * are reserved for special objects (i.e., system
1646 * resources). CPU devices have a very high order to
1647 * ensure they are probed after other devices.
1649 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS
, "scanning '%s'\n", handle_str
));
1650 order
= level
* 10 + 100;
1651 acpi_probe_order(handle
, &order
);
1652 child
= BUS_ADD_CHILD(bus
, bus
, order
, NULL
, -1);
1656 /* Associate the handle with the device_t and vice versa. */
1657 acpi_set_handle(child
, handle
);
1658 AcpiAttachData(handle
, acpi_fake_objhandler
, child
);
1661 * Check that the device is present. If it's not present,
1662 * leave it disabled (so that we have a device_t attached to
1663 * the handle, but we don't probe it).
1665 * XXX PCI link devices sometimes report "present" but not
1666 * "functional" (i.e. if disabled). Go ahead and probe them
1667 * anyway since we may enable them later.
1669 if (type
== ACPI_TYPE_DEVICE
&& !acpi_DeviceIsPresent(child
)) {
1670 /* Never disable PCI link devices. */
1671 if (acpi_MatchHid(handle
, "PNP0C0F"))
1674 * Docking stations should remain enabled since the system
1675 * may be undocked at boot.
1677 if (ACPI_SUCCESS(AcpiGetHandle(handle
, "_DCK", &h
)))
1680 device_disable(child
);
1685 * Get the device's resource settings and attach them.
1686 * Note that if the device has _PRS but no _CRS, we need
1687 * to decide when it's appropriate to try to configure the
1688 * device. Ignore the return value here; it's OK for the
1689 * device not to have any resources.
1691 acpi_parse_resources(child
, handle
, &acpi_res_parse_set
, NULL
);
1696 return_ACPI_STATUS (AE_OK
);
1700 * AcpiAttachData() requires an object handler but never uses it. This is a
1701 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1704 acpi_fake_objhandler(ACPI_HANDLE h
, UINT32 fn
, void *data
)
1709 acpi_shutdown_final(void *arg
, int howto
)
1711 struct acpi_softc
*sc
;
1715 * XXX Shutdown code should only run on the BSP (cpuid 0).
1716 * Some chipsets do not power off the system correctly if called from
1720 if ((howto
& RB_POWEROFF
) != 0) {
1721 status
= AcpiEnterSleepStatePrep(ACPI_STATE_S5
);
1722 if (ACPI_FAILURE(status
)) {
1723 kprintf("AcpiEnterSleepStatePrep failed - %s\n",
1724 AcpiFormatException(status
));
1727 kprintf("Powering system off using ACPI\n");
1728 ACPI_DISABLE_IRQS();
1729 status
= AcpiEnterSleepState(ACPI_STATE_S5
);
1730 if (ACPI_FAILURE(status
)) {
1731 kprintf("ACPI power-off failed - %s\n", AcpiFormatException(status
));
1734 kprintf("ACPI power-off failed - timeout\n");
1736 } else if ((howto
& RB_HALT
) == 0 &&
1737 (AcpiGbl_FADT
.Flags
& ACPI_FADT_RESET_REGISTER
) &&
1738 sc
->acpi_handle_reboot
) {
1739 /* Reboot using the reset register. */
1741 AcpiGbl_FADT
.ResetValue
, &AcpiGbl_FADT
.ResetRegister
);
1742 if (ACPI_FAILURE(status
)) {
1743 kprintf("ACPI reset failed - %s\n", AcpiFormatException(status
));
1746 kprintf("ACPI reset failed - timeout\n");
1748 } else if (sc
->acpi_do_disable
&& panicstr
== NULL
) {
1750 * Only disable ACPI if the user requested. On some systems, writing
1751 * the disable value to SMI_CMD hangs the system.
1753 kprintf("Shutting down ACPI\n");
1759 acpi_enable_fixed_events(struct acpi_softc
*sc
)
1761 static int first_time
= 1;
1763 /* Enable and clear fixed events and install handlers. */
1764 if ((AcpiGbl_FADT
.Flags
& ACPI_FADT_POWER_BUTTON
) == 0) {
1765 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON
);
1766 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON
,
1767 acpi_event_power_button_sleep
, sc
);
1769 device_printf(sc
->acpi_dev
, "Power Button (fixed)\n");
1771 if ((AcpiGbl_FADT
.Flags
& ACPI_FADT_SLEEP_BUTTON
) == 0) {
1772 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON
);
1773 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON
,
1774 acpi_event_sleep_button_sleep
, sc
);
1776 device_printf(sc
->acpi_dev
, "Sleep Button (fixed)\n");
1783 * Returns true if the device is actually present and should
1784 * be attached to. This requires the present, enabled, UI-visible
1785 * and diagnostics-passed bits to be set.
1788 acpi_DeviceIsPresent(device_t dev
)
1790 ACPI_DEVICE_INFO
*devinfo
;
1797 if ((h
= acpi_get_handle(dev
)) == NULL
)
1800 buf
.Length
= ACPI_ALLOCATE_BUFFER
;
1801 error
= AcpiGetObjectInfo(h
, &buf
);
1802 if (ACPI_FAILURE(error
))
1804 devinfo
= (ACPI_DEVICE_INFO
*)buf
.Pointer
;
1806 /* If no _STA method, must be present */
1807 if ((devinfo
->Valid
& ACPI_VALID_STA
) == 0)
1810 /* Return true for 'present' and 'functioning' */
1811 if (ACPI_DEVICE_PRESENT(devinfo
->CurrentStatus
))
1814 AcpiOsFree(buf
.Pointer
);
1819 * Returns true if the battery is actually present and inserted.
1822 acpi_BatteryIsPresent(device_t dev
)
1824 ACPI_DEVICE_INFO
*devinfo
;
1831 if ((h
= acpi_get_handle(dev
)) == NULL
)
1834 buf
.Length
= ACPI_ALLOCATE_BUFFER
;
1835 error
= AcpiGetObjectInfo(h
, &buf
);
1836 if (ACPI_FAILURE(error
))
1838 devinfo
= (ACPI_DEVICE_INFO
*)buf
.Pointer
;
1840 /* If no _STA method, must be present */
1841 if ((devinfo
->Valid
& ACPI_VALID_STA
) == 0)
1844 /* Return true for 'present', 'battery present', and 'functioning' */
1845 if (ACPI_BATTERY_PRESENT(devinfo
->CurrentStatus
))
1848 AcpiOsFree(buf
.Pointer
);
1853 * Match a HID string against a handle
1856 acpi_MatchHid(ACPI_HANDLE h
, const char *hid
)
1858 ACPI_DEVICE_INFO
*devinfo
;
1864 if (hid
== NULL
|| h
== NULL
)
1867 buf
.Length
= ACPI_ALLOCATE_BUFFER
;
1868 error
= AcpiGetObjectInfo(h
, &buf
);
1869 if (ACPI_FAILURE(error
))
1871 devinfo
= (ACPI_DEVICE_INFO
*)buf
.Pointer
;
1873 if ((devinfo
->Valid
& ACPI_VALID_HID
) != 0 &&
1874 strcmp(hid
, devinfo
->HardwareId
.Value
) == 0)
1876 else if ((devinfo
->Valid
& ACPI_VALID_CID
) != 0) {
1877 for (i
= 0; i
< devinfo
->CompatibilityId
.Count
; i
++) {
1878 if (strcmp(hid
, devinfo
->CompatibilityId
.Id
[i
].Value
) == 0) {
1885 AcpiOsFree(buf
.Pointer
);
1890 * Return the handle of a named object within our scope, ie. that of (parent)
1891 * or one if its parents.
1894 acpi_GetHandleInScope(ACPI_HANDLE parent
, char *path
, ACPI_HANDLE
*result
)
1899 /* Walk back up the tree to the root */
1901 status
= AcpiGetHandle(parent
, path
, &r
);
1902 if (ACPI_SUCCESS(status
)) {
1906 /* XXX Return error here? */
1907 if (status
!= AE_NOT_FOUND
)
1909 if (ACPI_FAILURE(AcpiGetParent(parent
, &r
)))
1910 return (AE_NOT_FOUND
);
1915 /* Find the difference between two PM tick counts. */
1917 acpi_TimerDelta(uint32_t end
, uint32_t start
)
1922 delta
= end
- start
;
1923 else if (AcpiGbl_FADT
.Flags
& ACPI_FADT_32BIT_TIMER
)
1924 delta
= ((0xFFFFFFFF - start
) + end
+ 1);
1926 delta
= ((0x00FFFFFF - start
) + end
+ 1) & 0x00FFFFFF;
1931 * Allocate a buffer with a preset data size.
1934 acpi_AllocBuffer(int size
)
1938 if ((buf
= kmalloc(size
+ sizeof(*buf
), M_ACPIDEV
, M_NOWAIT
)) == NULL
)
1941 buf
->Pointer
= (void *)(buf
+ 1);
1946 acpi_SetInteger(ACPI_HANDLE handle
, char *path
, UINT32 number
)
1949 ACPI_OBJECT_LIST args
;
1951 arg1
.Type
= ACPI_TYPE_INTEGER
;
1952 arg1
.Integer
.Value
= number
;
1954 args
.Pointer
= &arg1
;
1956 return (AcpiEvaluateObject(handle
, path
, &args
, NULL
));
1960 * Evaluate a path that should return an integer.
1963 acpi_GetInteger(ACPI_HANDLE handle
, char *path
, UINT32
*number
)
1970 handle
= ACPI_ROOT_OBJECT
;
1973 * Assume that what we've been pointed at is an Integer object, or
1974 * a method that will return an Integer.
1976 buf
.Pointer
= ¶m
;
1977 buf
.Length
= sizeof(param
);
1978 status
= AcpiEvaluateObject(handle
, path
, NULL
, &buf
);
1979 if (ACPI_SUCCESS(status
)) {
1980 if (param
.Type
== ACPI_TYPE_INTEGER
)
1981 *number
= param
.Integer
.Value
;
1987 * In some applications, a method that's expected to return an Integer
1988 * may instead return a Buffer (probably to simplify some internal
1989 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1990 * convert it into an Integer as best we can.
1994 if (status
== AE_BUFFER_OVERFLOW
) {
1995 if ((buf
.Pointer
= AcpiOsAllocate(buf
.Length
)) == NULL
) {
1996 status
= AE_NO_MEMORY
;
1998 status
= AcpiEvaluateObject(handle
, path
, NULL
, &buf
);
1999 if (ACPI_SUCCESS(status
))
2000 status
= acpi_ConvertBufferToInteger(&buf
, number
);
2001 AcpiOsFree(buf
.Pointer
);
2008 acpi_ConvertBufferToInteger(ACPI_BUFFER
*bufp
, UINT32
*number
)
2014 p
= (ACPI_OBJECT
*)bufp
->Pointer
;
2015 if (p
->Type
== ACPI_TYPE_INTEGER
) {
2016 *number
= p
->Integer
.Value
;
2019 if (p
->Type
!= ACPI_TYPE_BUFFER
)
2021 if (p
->Buffer
.Length
> sizeof(int))
2022 return (AE_BAD_DATA
);
2025 val
= p
->Buffer
.Pointer
;
2026 for (i
= 0; i
< p
->Buffer
.Length
; i
++)
2027 *number
+= val
[i
] << (i
* 8);
2032 * Iterate over the elements of an a package object, calling the supplied
2033 * function for each element.
2035 * XXX possible enhancement might be to abort traversal on error.
2038 acpi_ForeachPackageObject(ACPI_OBJECT
*pkg
,
2039 void (*func
)(ACPI_OBJECT
*comp
, void *arg
), void *arg
)
2044 if (pkg
== NULL
|| pkg
->Type
!= ACPI_TYPE_PACKAGE
)
2045 return (AE_BAD_PARAMETER
);
2047 /* Iterate over components */
2049 comp
= pkg
->Package
.Elements
;
2050 for (; i
< pkg
->Package
.Count
; i
++, comp
++)
2057 * Find the (index)th resource object in a set.
2060 acpi_FindIndexedResource(ACPI_BUFFER
*buf
, int index
, ACPI_RESOURCE
**resp
)
2065 rp
= (ACPI_RESOURCE
*)buf
->Pointer
;
2069 if (rp
> (ACPI_RESOURCE
*)((u_int8_t
*)buf
->Pointer
+ buf
->Length
))
2070 return (AE_BAD_PARAMETER
);
2072 /* Check for terminator */
2073 if (rp
->Type
== ACPI_RESOURCE_TYPE_END_TAG
|| rp
->Length
== 0)
2074 return (AE_NOT_FOUND
);
2075 rp
= ACPI_NEXT_RESOURCE(rp
);
2084 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2086 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2087 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2088 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2091 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2094 acpi_AppendBufferResource(ACPI_BUFFER
*buf
, ACPI_RESOURCE
*res
)
2099 /* Initialise the buffer if necessary. */
2100 if (buf
->Pointer
== NULL
) {
2101 buf
->Length
= ACPI_INITIAL_RESOURCE_BUFFER_SIZE
;
2102 if ((buf
->Pointer
= AcpiOsAllocate(buf
->Length
)) == NULL
)
2103 return (AE_NO_MEMORY
);
2104 rp
= (ACPI_RESOURCE
*)buf
->Pointer
;
2105 rp
->Type
= ACPI_RESOURCE_TYPE_END_TAG
;
2112 * Scan the current buffer looking for the terminator.
2113 * This will either find the terminator or hit the end
2114 * of the buffer and return an error.
2116 rp
= (ACPI_RESOURCE
*)buf
->Pointer
;
2118 /* Range check, don't go outside the buffer */
2119 if (rp
>= (ACPI_RESOURCE
*)((u_int8_t
*)buf
->Pointer
+ buf
->Length
))
2120 return (AE_BAD_PARAMETER
);
2121 if (rp
->Type
== ACPI_RESOURCE_TYPE_END_TAG
|| rp
->Length
== 0)
2123 rp
= ACPI_NEXT_RESOURCE(rp
);
2127 * Check the size of the buffer and expand if required.
2130 * size of existing resources before terminator +
2131 * size of new resource and header +
2132 * size of terminator.
2134 * Note that this loop should really only run once, unless
2135 * for some reason we are stuffing a *really* huge resource.
2137 while ((((u_int8_t
*)rp
- (u_int8_t
*)buf
->Pointer
) +
2138 res
->Length
+ ACPI_RS_SIZE_NO_DATA
+
2139 ACPI_RS_SIZE_MIN
) >= buf
->Length
) {
2140 if ((newp
= AcpiOsAllocate(buf
->Length
* 2)) == NULL
)
2141 return (AE_NO_MEMORY
);
2142 bcopy(buf
->Pointer
, newp
, buf
->Length
);
2143 rp
= (ACPI_RESOURCE
*)((u_int8_t
*)newp
+
2144 ((u_int8_t
*)rp
- (u_int8_t
*)buf
->Pointer
));
2145 AcpiOsFree(buf
->Pointer
);
2146 buf
->Pointer
= newp
;
2147 buf
->Length
+= buf
->Length
;
2150 /* Insert the new resource. */
2151 bcopy(res
, rp
, res
->Length
+ ACPI_RS_SIZE_NO_DATA
);
2153 /* And add the terminator. */
2154 rp
= ACPI_NEXT_RESOURCE(rp
);
2155 rp
->Type
= ACPI_RESOURCE_TYPE_END_TAG
;
2162 * Set interrupt model.
2165 acpi_SetIntrModel(int model
)
2168 return (acpi_SetInteger(ACPI_ROOT_OBJECT
, "_PIC", model
));
2172 * DEPRECATED. This interface has serious deficiencies and will be
2175 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2176 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2179 acpi_SetSleepState(struct acpi_softc
*sc
, int state
)
2185 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2188 return (acpi_EnterSleepState(sc
, state
));
2192 acpi_sleep_force(void *arg
)
2194 struct acpi_softc
*sc
;
2196 kprintf("acpi: suspend request timed out, forcing sleep now\n");
2198 if (ACPI_FAILURE(acpi_EnterSleepState(sc
, sc
->acpi_next_sstate
)))
2199 kprintf("acpi: force sleep state S%d failed\n", sc
->acpi_next_sstate
);
2203 * Request that the system enter the given suspend state. All /dev/apm
2204 * devices and devd(8) will be notified. Userland then has a chance to
2205 * save state and acknowledge the request. The system sleeps once all
2209 acpi_ReqSleepState(struct acpi_softc
*sc
, int state
)
2212 struct apm_clone_data
*clone
;
2215 if (state
< ACPI_STATE_S1
|| state
> ACPI_STATE_S5
)
2218 /* S5 (soft-off) should be entered directly with no waiting. */
2219 if (state
== ACPI_STATE_S5
) {
2220 if (ACPI_SUCCESS(acpi_EnterSleepState(sc
, state
)))
2226 #if !defined(__i386__)
2227 /* This platform does not support acpi suspend/resume. */
2228 return (EOPNOTSUPP
);
2231 /* If a suspend request is already in progress, just return. */
2233 if (sc
->acpi_next_sstate
!= 0) {
2238 /* Record the pending state and notify all apm devices. */
2239 sc
->acpi_next_sstate
= state
;
2241 STAILQ_FOREACH(clone
, &sc
->apm_cdevs
, entries
) {
2242 clone
->notify_status
= APM_EV_NONE
;
2243 if ((clone
->flags
& ACPI_EVF_DEVD
) == 0) {
2244 selwakeuppri(&clone
->sel_read
, PZERO
);
2245 KNOTE_UNLOCKED(&clone
->sel_read
.si_note
, 0);
2250 /* If devd(8) is not running, immediately enter the sleep state. */
2251 if (devctl_process_running() == FALSE
) {
2253 if (ACPI_SUCCESS(acpi_EnterSleepState(sc
, sc
->acpi_next_sstate
))) {
2260 /* Now notify devd(8) also. */
2261 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT
, state
);
2264 * Set a timeout to fire if userland doesn't ack the suspend request
2265 * in time. This way we still eventually go to sleep if we were
2266 * overheating or running low on battery, even if userland is hung.
2267 * We cancel this timeout once all userland acks are in or the
2268 * suspend request is aborted.
2270 callout_reset(&sc
->susp_force_to
, 10 * hz
, acpi_sleep_force
, sc
);
2276 * Acknowledge (or reject) a pending sleep state. The caller has
2277 * prepared for suspend and is now ready for it to proceed. If the
2278 * error argument is non-zero, it indicates suspend should be cancelled
2279 * and gives an errno value describing why. Once all votes are in,
2280 * we suspend the system.
2283 acpi_AckSleepState(struct apm_clone_data
*clone
, int error
)
2285 struct acpi_softc
*sc
;
2288 #if !defined(__i386__)
2289 /* This platform does not support acpi suspend/resume. */
2290 return (EOPNOTSUPP
);
2293 /* If no pending sleep state, return an error. */
2295 sc
= clone
->acpi_sc
;
2296 if (sc
->acpi_next_sstate
== 0) {
2301 /* Caller wants to abort suspend process. */
2303 sc
->acpi_next_sstate
= 0;
2304 callout_stop(&sc
->susp_force_to
);
2305 kprintf("acpi: listener on %s cancelled the pending suspend\n",
2306 devtoname(clone
->cdev
));
2312 * Mark this device as acking the suspend request. Then, walk through
2313 * all devices, seeing if they agree yet. We only count devices that
2314 * are writable since read-only devices couldn't ack the request.
2316 clone
->notify_status
= APM_EV_ACKED
;
2318 STAILQ_FOREACH(clone
, &sc
->apm_cdevs
, entries
) {
2319 if ((clone
->flags
& ACPI_EVF_WRITE
) != 0 &&
2320 clone
->notify_status
!= APM_EV_ACKED
) {
2326 /* If all devices have voted "yes", we will suspend now. */
2328 callout_stop(&sc
->susp_force_to
);
2332 if (ACPI_FAILURE(acpi_EnterSleepState(sc
, sc
->acpi_next_sstate
)))
2340 acpi_sleep_enable(void *arg
)
2343 ((struct acpi_softc
*)arg
)->acpi_sleep_disabled
= 0;
2346 enum acpi_sleep_state
{
2349 ACPI_SS_DEV_SUSPEND
,
2355 * Enter the desired system sleep state.
2357 * Currently we support S1-S5 but S4 is only S4BIOS
2360 acpi_EnterSleepState(struct acpi_softc
*sc
, int state
)
2365 enum acpi_sleep_state slp_state
;
2367 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__
, state
);
2369 /* Re-entry once we're suspending is not allowed. */
2372 if (sc
->acpi_sleep_disabled
) {
2374 kprintf("acpi: suspend request ignored (not ready yet)\n");
2377 sc
->acpi_sleep_disabled
= 1;
2381 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2382 * drivers need this.
2385 slp_state
= ACPI_SS_NONE
;
2391 status
= AcpiGetSleepTypeData(state
, &TypeA
, &TypeB
);
2392 if (status
== AE_NOT_FOUND
) {
2393 device_printf(sc
->acpi_dev
,
2394 "Sleep state S%d not supported by BIOS\n", state
);
2396 } else if (ACPI_FAILURE(status
)) {
2397 device_printf(sc
->acpi_dev
, "AcpiGetSleepTypeData failed - %s\n",
2398 AcpiFormatException(status
));
2402 sc
->acpi_sstate
= state
;
2404 /* Enable any GPEs as appropriate and requested by the user. */
2405 acpi_wake_prep_walk(state
);
2406 slp_state
= ACPI_SS_GPE_SET
;
2409 * Inform all devices that we are going to sleep. If at least one
2410 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2412 * XXX Note that a better two-pass approach with a 'veto' pass
2413 * followed by a "real thing" pass would be better, but the current
2414 * bus interface does not provide for this.
2416 if (DEVICE_SUSPEND(root_bus
) != 0) {
2417 device_printf(sc
->acpi_dev
, "device_suspend failed\n");
2420 slp_state
= ACPI_SS_DEV_SUSPEND
;
2422 /* If testing device suspend only, back out of everything here. */
2423 if (acpi_susp_bounce
)
2426 status
= AcpiEnterSleepStatePrep(state
);
2427 if (ACPI_FAILURE(status
)) {
2428 device_printf(sc
->acpi_dev
, "AcpiEnterSleepStatePrep failed - %s\n",
2429 AcpiFormatException(status
));
2432 slp_state
= ACPI_SS_SLP_PREP
;
2434 if (sc
->acpi_sleep_delay
> 0)
2435 DELAY(sc
->acpi_sleep_delay
* 1000000);
2437 if (state
!= ACPI_STATE_S1
) {
2438 acpi_sleep_machdep(sc
, state
);
2440 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2441 if (state
== ACPI_STATE_S4
)
2444 ACPI_DISABLE_IRQS();
2445 status
= AcpiEnterSleepState(state
);
2446 if (ACPI_FAILURE(status
)) {
2447 device_printf(sc
->acpi_dev
, "AcpiEnterSleepState failed - %s\n",
2448 AcpiFormatException(status
));
2452 slp_state
= ACPI_SS_SLEPT
;
2456 * Shut down cleanly and power off. This will call us back through the
2457 * shutdown handlers.
2459 shutdown_nice(RB_POWEROFF
);
2463 status
= AE_BAD_PARAMETER
;
2468 * Back out state according to how far along we got in the suspend
2469 * process. This handles both the error and success cases.
2471 sc
->acpi_next_sstate
= 0;
2472 if (slp_state
>= ACPI_SS_GPE_SET
) {
2473 acpi_wake_prep_walk(state
);
2474 sc
->acpi_sstate
= ACPI_STATE_S0
;
2476 if (slp_state
>= ACPI_SS_SLP_PREP
)
2477 AcpiLeaveSleepState(state
);
2478 if (slp_state
>= ACPI_SS_DEV_SUSPEND
)
2479 DEVICE_RESUME(root_bus
);
2480 if (slp_state
>= ACPI_SS_SLEPT
)
2481 acpi_enable_fixed_events(sc
);
2483 /* Allow another sleep request after a while. */
2484 /* XXX: needs timeout */
2485 if (state
!= ACPI_STATE_S5
)
2486 acpi_sleep_enable(sc
);
2488 /* Run /etc/rc.resume after we are back. */
2489 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT
, state
);
2492 return_ACPI_STATUS (status
);
2495 /* Initialize a device's wake GPE. */
2497 acpi_wake_init(device_t dev
, int type
)
2499 struct acpi_prw_data prw
;
2501 /* Evaluate _PRW to find the GPE. */
2502 if (acpi_parse_prw(acpi_get_handle(dev
), &prw
) != 0)
2505 /* Set the requested type for the GPE (runtime, wake, or both). */
2506 if (ACPI_FAILURE(AcpiSetGpeType(prw
.gpe_handle
, prw
.gpe_bit
, type
))) {
2507 device_printf(dev
, "set GPE type failed\n");
2514 /* Enable or disable the device's wake GPE. */
2516 acpi_wake_set_enable(device_t dev
, int enable
)
2518 struct acpi_prw_data prw
;
2522 /* Make sure the device supports waking the system and get the GPE. */
2523 if (acpi_parse_prw(acpi_get_handle(dev
), &prw
) != 0)
2526 flags
= acpi_get_flags(dev
);
2528 status
= AcpiEnableGpe(prw
.gpe_handle
, prw
.gpe_bit
, ACPI_NOT_ISR
);
2529 if (ACPI_FAILURE(status
)) {
2530 device_printf(dev
, "enable wake failed\n");
2533 acpi_set_flags(dev
, flags
| ACPI_FLAG_WAKE_ENABLED
);
2535 status
= AcpiDisableGpe(prw
.gpe_handle
, prw
.gpe_bit
, ACPI_NOT_ISR
);
2536 if (ACPI_FAILURE(status
)) {
2537 device_printf(dev
, "disable wake failed\n");
2540 acpi_set_flags(dev
, flags
& ~ACPI_FLAG_WAKE_ENABLED
);
2547 acpi_wake_sleep_prep(ACPI_HANDLE handle
, int sstate
)
2549 struct acpi_prw_data prw
;
2552 /* Check that this is a wake-capable device and get its GPE. */
2553 if (acpi_parse_prw(handle
, &prw
) != 0)
2555 dev
= acpi_get_device(handle
);
2558 * The destination sleep state must be less than (i.e., higher power)
2559 * or equal to the value specified by _PRW. If this GPE cannot be
2560 * enabled for the next sleep state, then disable it. If it can and
2561 * the user requested it be enabled, turn on any required power resources
2564 if (sstate
> prw
.lowest_wake
) {
2565 AcpiDisableGpe(prw
.gpe_handle
, prw
.gpe_bit
, ACPI_NOT_ISR
);
2567 device_printf(dev
, "wake_prep disabled wake for %s (S%d)\n",
2568 acpi_name(handle
), sstate
);
2569 } else if (dev
&& (acpi_get_flags(dev
) & ACPI_FLAG_WAKE_ENABLED
) != 0) {
2570 acpi_pwr_wake_enable(handle
, 1);
2571 acpi_SetInteger(handle
, "_PSW", 1);
2573 device_printf(dev
, "wake_prep enabled for %s (S%d)\n",
2574 acpi_name(handle
), sstate
);
2581 acpi_wake_run_prep(ACPI_HANDLE handle
, int sstate
)
2583 struct acpi_prw_data prw
;
2587 * Check that this is a wake-capable device and get its GPE. Return
2588 * now if the user didn't enable this device for wake.
2590 if (acpi_parse_prw(handle
, &prw
) != 0)
2592 dev
= acpi_get_device(handle
);
2593 if (dev
== NULL
|| (acpi_get_flags(dev
) & ACPI_FLAG_WAKE_ENABLED
) == 0)
2597 * If this GPE couldn't be enabled for the previous sleep state, it was
2598 * disabled before going to sleep so re-enable it. If it was enabled,
2599 * clear _PSW and turn off any power resources it used.
2601 if (sstate
> prw
.lowest_wake
) {
2602 AcpiEnableGpe(prw
.gpe_handle
, prw
.gpe_bit
, ACPI_NOT_ISR
);
2604 device_printf(dev
, "run_prep re-enabled %s\n", acpi_name(handle
));
2606 acpi_SetInteger(handle
, "_PSW", 0);
2607 acpi_pwr_wake_enable(handle
, 0);
2609 device_printf(dev
, "run_prep cleaned up for %s\n",
2617 acpi_wake_prep(ACPI_HANDLE handle
, UINT32 level
, void *context
, void **status
)
2621 /* If suspending, run the sleep prep function, otherwise wake. */
2622 sstate
= *(int *)context
;
2623 if (AcpiGbl_SystemAwakeAndRunning
)
2624 acpi_wake_sleep_prep(handle
, sstate
);
2626 acpi_wake_run_prep(handle
, sstate
);
2630 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2632 acpi_wake_prep_walk(int sstate
)
2634 ACPI_HANDLE sb_handle
;
2636 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT
, "\\_SB_", &sb_handle
)))
2637 AcpiWalkNamespace(ACPI_TYPE_DEVICE
, sb_handle
, 100,
2638 acpi_wake_prep
, &sstate
, NULL
);
2642 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2644 acpi_wake_sysctl_walk(device_t dev
)
2647 int error
, i
, numdevs
;
2652 error
= device_get_children(dev
, &devlist
, &numdevs
);
2653 if (error
!= 0 || numdevs
== 0) {
2655 kfree(devlist
, M_TEMP
);
2658 for (i
= 0; i
< numdevs
; i
++) {
2660 acpi_wake_sysctl_walk(child
);
2661 if (!device_is_attached(child
))
2663 status
= AcpiEvaluateObject(acpi_get_handle(child
), "_PRW", NULL
, NULL
);
2664 if (ACPI_SUCCESS(status
)) {
2665 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child
),
2666 SYSCTL_CHILDREN(device_get_sysctl_tree(child
)), OID_AUTO
,
2667 "wake", CTLTYPE_INT
| CTLFLAG_RW
, child
, 0,
2668 acpi_wake_set_sysctl
, "I", "Device set to wake the system");
2671 kfree(devlist
, M_TEMP
);
2678 /* Enable or disable wake from userland. */
2680 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS
)
2685 dev
= (device_t
)arg1
;
2686 enable
= (acpi_get_flags(dev
) & ACPI_FLAG_WAKE_ENABLED
) ? 1 : 0;
2688 error
= sysctl_handle_int(oidp
, &enable
, 0, req
);
2689 if (error
!= 0 || req
->newptr
== NULL
)
2691 if (enable
!= 0 && enable
!= 1)
2694 return (acpi_wake_set_enable(dev
, enable
));
2698 /* Parse a device's _PRW into a structure. */
2700 acpi_parse_prw(ACPI_HANDLE h
, struct acpi_prw_data
*prw
)
2703 ACPI_BUFFER prw_buffer
;
2704 ACPI_OBJECT
*res
, *res2
;
2705 int error
, i
, power_count
;
2707 if (h
== NULL
|| prw
== NULL
)
2711 * The _PRW object (7.2.9) is only required for devices that have the
2712 * ability to wake the system from a sleeping state.
2715 prw_buffer
.Pointer
= NULL
;
2716 prw_buffer
.Length
= ACPI_ALLOCATE_BUFFER
;
2717 status
= AcpiEvaluateObject(h
, "_PRW", NULL
, &prw_buffer
);
2718 if (ACPI_FAILURE(status
))
2720 res
= (ACPI_OBJECT
*)prw_buffer
.Pointer
;
2723 if (!ACPI_PKG_VALID(res
, 2))
2727 * Element 1 of the _PRW object:
2728 * The lowest power system sleeping state that can be entered while still
2729 * providing wake functionality. The sleeping state being entered must
2730 * be less than (i.e., higher power) or equal to this value.
2732 if (acpi_PkgInt32(res
, 1, &prw
->lowest_wake
) != 0)
2736 * Element 0 of the _PRW object:
2738 switch (res
->Package
.Elements
[0].Type
) {
2739 case ACPI_TYPE_INTEGER
:
2741 * If the data type of this package element is numeric, then this
2742 * _PRW package element is the bit index in the GPEx_EN, in the
2743 * GPE blocks described in the FADT, of the enable bit that is
2744 * enabled for the wake event.
2746 prw
->gpe_handle
= NULL
;
2747 prw
->gpe_bit
= res
->Package
.Elements
[0].Integer
.Value
;
2750 case ACPI_TYPE_PACKAGE
:
2752 * If the data type of this package element is a package, then this
2753 * _PRW package element is itself a package containing two
2754 * elements. The first is an object reference to the GPE Block
2755 * device that contains the GPE that will be triggered by the wake
2756 * event. The second element is numeric and it contains the bit
2757 * index in the GPEx_EN, in the GPE Block referenced by the
2758 * first element in the package, of the enable bit that is enabled for
2761 * For example, if this field is a package then it is of the form:
2762 * Package() {\_SB.PCI0.ISA.GPE, 2}
2764 res2
= &res
->Package
.Elements
[0];
2765 if (!ACPI_PKG_VALID(res2
, 2))
2767 prw
->gpe_handle
= acpi_GetReference(NULL
, &res2
->Package
.Elements
[0]);
2768 if (prw
->gpe_handle
== NULL
)
2770 if (acpi_PkgInt32(res2
, 1, &prw
->gpe_bit
) != 0)
2778 /* Elements 2 to N of the _PRW object are power resources. */
2779 power_count
= res
->Package
.Count
- 2;
2780 if (power_count
> ACPI_PRW_MAX_POWERRES
) {
2781 kprintf("ACPI device %s has too many power resources\n", acpi_name(h
));
2784 prw
->power_res_count
= power_count
;
2785 for (i
= 0; i
< power_count
; i
++)
2786 prw
->power_res
[i
] = res
->Package
.Elements
[i
];
2789 if (prw_buffer
.Pointer
!= NULL
)
2790 AcpiOsFree(prw_buffer
.Pointer
);
2795 * ACPI Event Handlers
2798 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2801 acpi_system_eventhandler_sleep(void *arg
, int state
)
2805 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__
, state
);
2807 /* Check if button action is disabled. */
2808 if (state
== ACPI_S_STATES_MAX
+ 1)
2811 /* Request that the system prepare to enter the given suspend state. */
2812 ret
= acpi_ReqSleepState((struct acpi_softc
*)arg
, state
);
2814 kprintf("acpi: request to enter state S%d failed (err %d)\n",
2821 acpi_system_eventhandler_wakeup(void *arg
, int state
)
2824 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__
, state
);
2826 /* Currently, nothing to do for wakeup. */
2832 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2835 acpi_event_power_button_sleep(void *context
)
2837 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
2839 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
2841 EVENTHANDLER_INVOKE(acpi_sleep_event
, sc
->acpi_power_button_sx
);
2843 return_VALUE (ACPI_INTERRUPT_HANDLED
);
2847 acpi_event_power_button_wake(void *context
)
2849 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
2851 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
2853 EVENTHANDLER_INVOKE(acpi_wakeup_event
, sc
->acpi_power_button_sx
);
2855 return_VALUE (ACPI_INTERRUPT_HANDLED
);
2859 acpi_event_sleep_button_sleep(void *context
)
2861 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
2863 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
2865 EVENTHANDLER_INVOKE(acpi_sleep_event
, sc
->acpi_sleep_button_sx
);
2867 return_VALUE (ACPI_INTERRUPT_HANDLED
);
2871 acpi_event_sleep_button_wake(void *context
)
2873 struct acpi_softc
*sc
= (struct acpi_softc
*)context
;
2875 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__
);
2877 EVENTHANDLER_INVOKE(acpi_wakeup_event
, sc
->acpi_sleep_button_sx
);
2879 return_VALUE (ACPI_INTERRUPT_HANDLED
);
2883 * XXX This static buffer is suboptimal. There is no locking so only
2884 * use this for single-threaded callers.
2887 acpi_name(ACPI_HANDLE handle
)
2890 static char data
[256];
2892 buf
.Length
= sizeof(data
);
2895 if (handle
&& ACPI_SUCCESS(AcpiGetName(handle
, ACPI_FULL_PATHNAME
, &buf
)))
2897 return ("(unknown)");
2901 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2902 * parts of the namespace.
2905 acpi_avoid(ACPI_HANDLE handle
)
2907 char *cp
, *env
, *np
;
2910 np
= acpi_name(handle
);
2913 if ((env
= kgetenv("debug.acpi.avoid")) == NULL
)
2916 /* Scan the avoid list checking for a match */
2919 while (*cp
!= 0 && isspace(*cp
))
2924 while (cp
[len
] != 0 && !isspace(cp
[len
]))
2926 if (!strncmp(cp
, np
, len
)) {
2938 * Debugging/bug-avoidance. Disable ACPI subsystem components.
2941 acpi_disabled(char *subsys
)
2946 if ((env
= kgetenv("debug.acpi.disabled")) == NULL
)
2948 if (strcmp(env
, "all") == 0) {
2953 /* Scan the disable list, checking for a match. */
2956 while (*cp
!= '\0' && isspace(*cp
))
2961 while (cp
[len
] != '\0' && !isspace(cp
[len
]))
2963 if (strncmp(cp
, subsys
, len
) == 0) {
2975 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
2976 * components are enabled by default. The ones that are not have to be
2977 * enabled via debug.acpi.enabled.
2980 acpi_enabled(char *subsys
)
2985 if ((env
= kgetenv("debug.acpi.enabled")) == NULL
)
2987 if (strcmp(env
, "all") == 0) {
2992 /* Scan the enable list, checking for a match. */
2995 while (*cp
!= '\0' && isspace(*cp
))
3000 while (cp
[len
] != '\0' && !isspace(cp
[len
]))
3002 if (strncmp(cp
, subsys
, len
) == 0) {
3014 * Control interface.
3016 * We multiplex ioctls for all participating ACPI devices here. Individual
3017 * drivers wanting to be accessible via /dev/acpi should use the
3018 * register/deregister interface to make their handlers visible.
3020 struct acpi_ioctl_hook
3022 TAILQ_ENTRY(acpi_ioctl_hook
) link
;
3028 static TAILQ_HEAD(,acpi_ioctl_hook
) acpi_ioctl_hooks
;
3029 static int acpi_ioctl_hooks_initted
;
3032 acpi_register_ioctl(u_long cmd
, acpi_ioctl_fn fn
, void *arg
)
3034 struct acpi_ioctl_hook
*hp
;
3036 if ((hp
= kmalloc(sizeof(*hp
), M_ACPIDEV
, M_NOWAIT
)) == NULL
)
3043 if (acpi_ioctl_hooks_initted
== 0) {
3044 TAILQ_INIT(&acpi_ioctl_hooks
);
3045 acpi_ioctl_hooks_initted
= 1;
3047 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks
, hp
, link
);
3054 acpi_deregister_ioctl(u_long cmd
, acpi_ioctl_fn fn
)
3056 struct acpi_ioctl_hook
*hp
;
3059 TAILQ_FOREACH(hp
, &acpi_ioctl_hooks
, link
)
3060 if (hp
->cmd
== cmd
&& hp
->fn
== fn
)
3064 TAILQ_REMOVE(&acpi_ioctl_hooks
, hp
, link
);
3065 kfree(hp
, M_ACPIDEV
);
3071 acpiopen(struct dev_open_args
*ap
)
3077 acpiclose(struct dev_close_args
*ap
)
3083 acpiioctl(struct dev_ioctl_args
*ap
)
3085 struct acpi_softc
*sc
;
3086 struct acpi_ioctl_hook
*hp
;
3091 sc
= ap
->a_head
.a_dev
->si_drv1
;
3094 * Scan the list of registered ioctls, looking for handlers.
3097 if (acpi_ioctl_hooks_initted
)
3098 TAILQ_FOREACH(hp
, &acpi_ioctl_hooks
, link
) {
3099 if (hp
->cmd
== ap
->a_cmd
)
3104 return (hp
->fn(ap
->a_cmd
, ap
->a_data
, hp
->arg
));
3107 * Core ioctls are not permitted for non-writable user.
3108 * Currently, other ioctls just fetch information.
3109 * Not changing system behavior.
3111 if ((ap
->a_fflag
& FWRITE
) == 0)
3114 /* Core system ioctls. */
3115 switch (ap
->a_cmd
) {
3116 case ACPIIO_REQSLPSTATE
:
3117 state
= *(int *)ap
->a_data
;
3118 if (state
!= ACPI_STATE_S5
)
3119 error
= acpi_ReqSleepState(sc
, state
);
3121 kprintf("power off via acpi ioctl not supported\n");
3125 case ACPIIO_ACKSLPSTATE
:
3126 error
= *(int *)ap
->a_data
;
3127 error
= acpi_AckSleepState(sc
->acpi_clone
, error
);
3129 case ACPIIO_SETSLPSTATE
: /* DEPRECATED */
3131 state
= *(int *)ap
->a_data
;
3132 if (state
>= ACPI_STATE_S0
&& state
<= ACPI_S_STATES_MAX
)
3133 if (ACPI_SUCCESS(acpi_SetSleepState(sc
, state
)))
3144 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
)
3148 UINT8 state
, TypeA
, TypeB
;
3150 sbuf_new(&sb
, NULL
, 32, SBUF_AUTOEXTEND
);
3151 for (state
= ACPI_STATE_S1
; state
< ACPI_S_STATES_MAX
+ 1; state
++)
3152 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state
, &TypeA
, &TypeB
)))
3153 sbuf_printf(&sb
, "S%d ", state
);
3156 error
= sysctl_handle_string(oidp
, sbuf_data(&sb
), sbuf_len(&sb
), req
);
3162 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS
)
3164 char sleep_state
[10];
3166 u_int new_state
, old_state
;
3168 old_state
= *(u_int
*)oidp
->oid_arg1
;
3169 if (old_state
> ACPI_S_STATES_MAX
+ 1)
3170 strlcpy(sleep_state
, "unknown", sizeof(sleep_state
));
3172 strlcpy(sleep_state
, sleep_state_names
[old_state
], sizeof(sleep_state
));
3173 error
= sysctl_handle_string(oidp
, sleep_state
, sizeof(sleep_state
), req
);
3174 if (error
== 0 && req
->newptr
!= NULL
) {
3175 new_state
= ACPI_STATE_S0
;
3176 for (; new_state
<= ACPI_S_STATES_MAX
+ 1; new_state
++)
3177 if (strcmp(sleep_state
, sleep_state_names
[new_state
]) == 0)
3179 if (new_state
<= ACPI_S_STATES_MAX
+ 1) {
3180 if (new_state
!= old_state
)
3181 *(u_int
*)oidp
->oid_arg1
= new_state
;
3189 /* Inform devctl(4) when we receive a Notify. */
3191 acpi_UserNotify(const char *subsystem
, ACPI_HANDLE h
, uint8_t notify
)
3193 char notify_buf
[16];
3194 ACPI_BUFFER handle_buf
;
3197 if (subsystem
== NULL
)
3200 handle_buf
.Pointer
= NULL
;
3201 handle_buf
.Length
= ACPI_ALLOCATE_BUFFER
;
3202 status
= AcpiNsHandleToPathname(h
, &handle_buf
);
3203 if (ACPI_FAILURE(status
))
3205 ksnprintf(notify_buf
, sizeof(notify_buf
), "notify=0x%02x", notify
);
3206 devctl_notify("ACPI", subsystem
, handle_buf
.Pointer
, notify_buf
);
3207 AcpiOsFree(handle_buf
.Pointer
);
3212 * Support for parsing debug options from the kernel environment.
3214 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3215 * by specifying the names of the bits in the debug.acpi.layer and
3216 * debug.acpi.level environment variables. Bits may be unset by
3217 * prefixing the bit name with !.
3225 static struct debugtag dbg_layer
[] = {
3226 {"ACPI_UTILITIES", ACPI_UTILITIES
},
3227 {"ACPI_HARDWARE", ACPI_HARDWARE
},
3228 {"ACPI_EVENTS", ACPI_EVENTS
},
3229 {"ACPI_TABLES", ACPI_TABLES
},
3230 {"ACPI_NAMESPACE", ACPI_NAMESPACE
},
3231 {"ACPI_PARSER", ACPI_PARSER
},
3232 {"ACPI_DISPATCHER", ACPI_DISPATCHER
},
3233 {"ACPI_EXECUTER", ACPI_EXECUTER
},
3234 {"ACPI_RESOURCES", ACPI_RESOURCES
},
3235 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER
},
3236 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES
},
3237 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER
},
3238 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS
},
3240 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER
},
3241 {"ACPI_BATTERY", ACPI_BATTERY
},
3242 {"ACPI_BUS", ACPI_BUS
},
3243 {"ACPI_BUTTON", ACPI_BUTTON
},
3244 {"ACPI_EC", ACPI_EC
},
3245 {"ACPI_FAN", ACPI_FAN
},
3246 {"ACPI_POWERRES", ACPI_POWERRES
},
3247 {"ACPI_PROCESSOR", ACPI_PROCESSOR
},
3248 {"ACPI_THERMAL", ACPI_THERMAL
},
3249 {"ACPI_TIMER", ACPI_TIMER
},
3250 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS
},
3254 static struct debugtag dbg_level
[] = {
3255 {"ACPI_LV_INIT", ACPI_LV_INIT
},
3256 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT
},
3257 {"ACPI_LV_INFO", ACPI_LV_INFO
},
3258 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS
},
3260 /* Trace verbosity level 1 [Standard Trace Level] */
3261 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES
},
3262 {"ACPI_LV_PARSE", ACPI_LV_PARSE
},
3263 {"ACPI_LV_LOAD", ACPI_LV_LOAD
},
3264 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH
},
3265 {"ACPI_LV_EXEC", ACPI_LV_EXEC
},
3266 {"ACPI_LV_NAMES", ACPI_LV_NAMES
},
3267 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION
},
3268 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD
},
3269 {"ACPI_LV_TABLES", ACPI_LV_TABLES
},
3270 {"ACPI_LV_VALUES", ACPI_LV_VALUES
},
3271 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS
},
3272 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES
},
3273 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS
},
3274 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE
},
3275 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1
},
3277 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3278 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS
},
3279 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS
},
3280 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS
},
3281 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2
},
3282 {"ACPI_LV_ALL", ACPI_LV_ALL
},
3284 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3285 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX
},
3286 {"ACPI_LV_THREADS", ACPI_LV_THREADS
},
3287 {"ACPI_LV_IO", ACPI_LV_IO
},
3288 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS
},
3289 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3
},
3291 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3292 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE
},
3293 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO
},
3294 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES
},
3295 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS
},
3296 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE
},
3301 acpi_parse_debug(char *cp
, struct debugtag
*tag
, UINT32
*flag
)
3313 while (*ep
&& !isspace(*ep
))
3324 for (i
= 0; tag
[i
].name
!= NULL
; i
++) {
3325 if (!strncmp(cp
, tag
[i
].name
, l
)) {
3327 *flag
|= tag
[i
].value
;
3329 *flag
&= ~tag
[i
].value
;
3337 acpi_set_debugging(void *junk
)
3339 char *layer
, *level
;
3346 layer
= kgetenv("debug.acpi.layer");
3347 level
= kgetenv("debug.acpi.level");
3348 if (layer
== NULL
&& level
== NULL
)
3351 kprintf("ACPI set debug");
3352 if (layer
!= NULL
) {
3353 if (strcmp("NONE", layer
) != 0)
3354 kprintf(" layer '%s'", layer
);
3355 acpi_parse_debug(layer
, &dbg_layer
[0], &AcpiDbgLayer
);
3358 if (level
!= NULL
) {
3359 if (strcmp("NONE", level
) != 0)
3360 kprintf(" level '%s'", level
);
3361 acpi_parse_debug(level
, &dbg_level
[0], &AcpiDbgLevel
);
3367 SYSINIT(acpi_debugging
, SI_BOOT1_TUNABLES
, SI_ORDER_ANY
, acpi_set_debugging
,
3371 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS
)
3374 struct debugtag
*tag
;
3377 if (sbuf_new(&sb
, NULL
, 128, SBUF_AUTOEXTEND
) == NULL
)
3379 if (strcmp(oidp
->oid_arg1
, "debug.acpi.layer") == 0) {
3380 tag
= &dbg_layer
[0];
3381 dbg
= &AcpiDbgLayer
;
3383 tag
= &dbg_level
[0];
3384 dbg
= &AcpiDbgLevel
;
3387 /* Get old values if this is a get request. */
3388 ACPI_SERIAL_BEGIN(acpi
);
3390 sbuf_cpy(&sb
, "NONE");
3391 } else if (req
->newptr
== NULL
) {
3392 for (; tag
->name
!= NULL
; tag
++) {
3393 if ((*dbg
& tag
->value
) == tag
->value
)
3394 sbuf_printf(&sb
, "%s ", tag
->name
);
3400 /* Copy out the old values to the user. */
3401 error
= SYSCTL_OUT(req
, sbuf_data(&sb
), sbuf_len(&sb
));
3404 /* If the user is setting a string, parse it. */
3405 if (error
== 0 && req
->newptr
!= NULL
) {
3407 ksetenv((char *)oidp
->oid_arg1
, (char *)req
->newptr
);
3408 acpi_set_debugging(NULL
);
3410 ACPI_SERIAL_END(acpi
);
3415 SYSCTL_PROC(_debug_acpi
, OID_AUTO
, layer
, CTLFLAG_RW
| CTLTYPE_STRING
,
3416 "debug.acpi.layer", 0, acpi_debug_sysctl
, "A", "");
3417 SYSCTL_PROC(_debug_acpi
, OID_AUTO
, level
, CTLFLAG_RW
| CTLTYPE_STRING
,
3418 "debug.acpi.level", 0, acpi_debug_sysctl
, "A", "");
3419 #endif /* ACPI_DEBUG */
3422 acpi_pm_func(u_long cmd
, void *arg
, ...)
3424 int state
, acpi_state
;
3426 struct acpi_softc
*sc
;
3431 case POWER_CMD_SUSPEND
:
3432 sc
= (struct acpi_softc
*)arg
;
3439 state
= va_arg(ap
, int);
3443 case POWER_SLEEP_STATE_STANDBY
:
3444 acpi_state
= sc
->acpi_standby_sx
;
3446 case POWER_SLEEP_STATE_SUSPEND
:
3447 acpi_state
= sc
->acpi_suspend_sx
;
3449 case POWER_SLEEP_STATE_HIBERNATE
:
3450 acpi_state
= ACPI_STATE_S4
;
3457 if (ACPI_FAILURE(acpi_EnterSleepState(sc
, acpi_state
)))
3470 acpi_pm_register(void *arg
)
3472 if (!cold
|| resource_disabled("acpi", 0))
3475 power_pm_register(POWER_PM_TYPE_ACPI
, acpi_pm_func
, NULL
);
3478 SYSINIT(power
, SI_BOOT2_KLD
, SI_ORDER_ANY
, acpi_pm_register
, 0);