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Some fix for the recent apm module changes.

Browse Source 
- Now that apm loadable module can inform its existence to other kernel
   components  (e.g. i386/isa/clock.c:startrtclock()'s TCS hack).
 - Exchange priority of SI_SUB_CPU and SI_SUB_KLD for above purpose.
 - Add simple arbitration mechanism for APM vs. ACPI.  This prevents
   the kernel enables both of them.
 - Remove obsolete `#ifdef DEV_APM' related code.
 - Add abstracted interface for Powermanagement operations.  Public apm(4)
   functions, such as apm_suspend(), should be replaced new interfaces.
   Currently only power_pm_suspend (successor of apm_suspend) is implemented.

Reviewed by:	peter, arch@ and audit@
This commit is contained in:
Mitsuru IWASAKI 2001-11-01 16:34:07 +00:00
parent 3c560efb1a
commit f9390180fe
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=85835
13 changed files with 419 additions and 53 deletions
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11
sys/amd64/amd64/tsc.c
View File

@ -49,7 +49,6 @@
*/
#include "opt_clock.h"
#include "opt_apm.h"
#include "opt_mca.h"
#include <sys/param.h>
@ -63,6 +62,7 @@
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/cons.h>
#include <sys/power.h>
#include <machine/clock.h>
#ifdef CLK_CALIBRATION_LOOP
@ -823,7 +823,6 @@ startrtclock()
* Curse Intel for leaving the counter out of the I/O APIC.
*/
#ifdef DEV_APM
/*
* We can not use the TSC if we support APM. Precise timekeeping
* on an APM'ed machine is at best a fools pursuit, since
@ -834,13 +833,11 @@ startrtclock()
* We don't know at this point whether APM is going to be used
* or not, nor when it might be activated. Play it safe.
*/
{
int disabled = 0;
resource_int_value("apm", 0, "disabled", &disabled);
if (disabled == 0)
if (power_pm_get_type() == POWER_PM_TYPE_APM) {
if (bootverbose)
printf("TSC initialization skipped: APM enabled.\n");
return;
}
#endif /* DEV_APM */
if (tsc_present && tsc_freq != 0 && !tsc_is_broken) {
tsc_timecounter.tc_frequency = tsc_freq;

11
sys/amd64/isa/clock.c
View File

@ -49,7 +49,6 @@
*/
#include "opt_clock.h"
#include "opt_apm.h"
#include "opt_mca.h"
#include <sys/param.h>
@ -63,6 +62,7 @@
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/cons.h>
#include <sys/power.h>
#include <machine/clock.h>
#ifdef CLK_CALIBRATION_LOOP
@ -823,7 +823,6 @@ startrtclock()
* Curse Intel for leaving the counter out of the I/O APIC.
*/
#ifdef DEV_APM
/*
* We can not use the TSC if we support APM. Precise timekeeping
* on an APM'ed machine is at best a fools pursuit, since
@ -834,13 +833,11 @@ startrtclock()
* We don't know at this point whether APM is going to be used
* or not, nor when it might be activated. Play it safe.
*/
{
int disabled = 0;
resource_int_value("apm", 0, "disabled", &disabled);
if (disabled == 0)
if (power_pm_get_type() == POWER_PM_TYPE_APM) {
if (bootverbose)
printf("TSC initialization skipped: APM enabled.\n");
return;
}
#endif /* DEV_APM */
if (tsc_present && tsc_freq != 0 && !tsc_is_broken) {
tsc_timecounter.tc_frequency = tsc_freq;

1
sys/conf/files
View File

@ -816,6 +816,7 @@ kern/subr_mchain.c optional libmchain
kern/subr_module.c standard
kern/subr_param.c standard
kern/subr_pcpu.c standard
kern/subr_power.c standard
kern/subr_prf.c standard
kern/subr_prof.c standard
kern/subr_rman.c standard

75
sys/dev/acpica/acpi.c
View File

@ -42,6 +42,7 @@
#include <sys/reboot.h>
#include <sys/sysctl.h>
#include <sys/ctype.h>
#include <sys/power.h>
#include <machine/clock.h>
#include <machine/resource.h>
@ -126,6 +127,8 @@ static void acpi_system_eventhandler_sleep(void *arg, int state);
static void acpi_system_eventhandler_wakeup(void *arg, int state);
static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
static int acpi_pm_func(u_long cmd, void *arg, ...);
static device_method_t acpi_methods[] = {
/* Device interface */
DEVMETHOD(device_identify, acpi_identify),
@ -185,7 +188,9 @@ acpi_modevent(struct module *mod, int event, void *junk)
return(EPERM);
break;
case MOD_UNLOAD:
return(EBUSY);
if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
return(EBUSY);
break;
default:
break;
}
@ -268,6 +273,13 @@ acpi_probe(device_t dev)
int error;
FUNCTION_TRACE(__func__);
if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
power_pm_get_type() != POWER_PM_TYPE_ACPI) {
device_printf(dev, "Other PM system enabled.\n");
return_VALUE(ENXIO);
}
ACPI_LOCK;
if ((status = AcpiGetTableHeader(ACPI_TABLE_XSDT, 1, &th)) != AE_OK) {
@ -441,6 +453,9 @@ acpi_attach(device_t dev)
goto out;
}
/* Register ACPI again to pass the correct argument of pm_func. */
power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
error = 0;
out:
@ -1863,3 +1878,61 @@ acpi_set_debugging(void *junk)
}
SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging, NULL);
#endif
static int
acpi_pm_func(u_long cmd, void *arg, ...)
{
int state, acpi_state;
int error;
struct acpi_softc *sc;
va_list ap;
error = 0;
switch (cmd) {
case POWER_CMD_SUSPEND:
sc = (struct acpi_softc *)arg;
if (sc == NULL) {
error = EINVAL;
goto out;
}
va_start(ap, arg);
state = va_arg(ap, int);
va_end(ap);
switch (state) {
case POWER_SLEEP_STATE_STANDBY:
acpi_state = sc->acpi_standby_sx;
break;
case POWER_SLEEP_STATE_SUSPEND:
acpi_state = sc->acpi_suspend_sx;
break;
case POWER_SLEEP_STATE_HIBERNATE:
acpi_state = ACPI_STATE_S4;
break;
default:
error = EINVAL;
goto out;
}
acpi_SetSleepState(sc, acpi_state);
break;
default:
error = EINVAL;
goto out;
}
out:
return (error);
}
static void
acpi_pm_register(void *arg)
{
power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
}
SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);

14
sys/dev/syscons/syscons.c
View File

@ -31,9 +31,6 @@
#include "opt_syscons.h"
#include "opt_splash.h"
#include "opt_ddb.h"
#ifdef __i386__
#include "opt_apm.h"
#endif
#include <sys/param.h>
#include <sys/systm.h>
@ -53,6 +50,7 @@
#include <sys/signalvar.h>
#include <sys/sysctl.h>
#include <sys/tty.h>
#include <sys/power.h>
#include <machine/clock.h>
#include <machine/pc/display.h>
@ -3230,18 +3228,12 @@ scgetc(sc_softc_t *sc, u_int flags)
#endif
break;
#ifdef DEV_APM
case SUSP:
apm_suspend(PMST_SUSPEND);
power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
break;
case STBY:
apm_suspend(PMST_STANDBY);
power_pm_suspend(POWER_SLEEP_STATE_STANDBY);
break;
#else
case SUSP:
case STBY:
break;
#endif
case DBG:
#ifndef SC_DISABLE_DDBKEY

98
sys/i386/apm/apm.c
View File

@ -32,9 +32,11 @@
#include <sys/uio.h>
#include <sys/signalvar.h>
#include <sys/sysctl.h>
#include <sys/power.h>
#include <machine/apm_bios.h>
#include <machine/segments.h>
#include <machine/clock.h>
#include <machine/stdarg.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>
@ -53,6 +55,8 @@ static void apm_resume __P((void));
static int apm_bioscall(void);
static int apm_check_function_supported __P((u_int version, u_int func));
static int apm_pm_func(u_long, void*, ...);
static u_long apm_version;
int apm_evindex;
@ -741,6 +745,30 @@ apm_not_halt_cpu(void)
/* device driver definitions */
/*
* Module event
*/
static int
apm_modevent(struct module *mod, int event, void *junk)
{
switch (event) {
case MOD_LOAD:
if (!cold)
return (EPERM);
break;
case MOD_UNLOAD:
if (!cold && power_pm_get_type() == POWER_PM_TYPE_APM)
return (EBUSY);
break;
default:
break;
}
return (0);
}
/*
* Create "connection point"
*/
@ -749,6 +777,11 @@ apm_identify(driver_t *driver, device_t parent)
{
device_t child;
if (!cold) {
printf("Don't load this driver from userland!!\n");
return;
}
child = BUS_ADD_CHILD(parent, 0, "apm", 0);
if (child == NULL)
panic("apm_identify");
@ -777,6 +810,12 @@ apm_probe(device_t dev)
return ENXIO;
}
if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
power_pm_get_type() != POWER_PM_TYPE_APM) {
printf("apm: Other PM system enabled.\n");
return ENXIO;
}
if (resource_int_value("apm", 0, "flags", &flags) != 0)
flags = 0;
@ -1038,10 +1077,13 @@ apm_attach(device_t dev)
EVENTHANDLER_REGISTER(shutdown_final, apm_power_off, NULL,
SHUTDOWN_PRI_LAST);
/* Register APM again to pass the correct argument of pm_func. */
power_pm_register(POWER_PM_TYPE_APM, apm_pm_func, sc);
sc->initialized = 1;
sc->suspending = 0;
make_dev(&apm_cdevsw, 0, 0, 5, 0660, "apm");
make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm");
make_dev(&apm_cdevsw, 8, 0, 5, 0660, "apmctl");
return 0;
}
@ -1315,4 +1357,56 @@ static driver_t apm_driver = {
static devclass_t apm_devclass;
DRIVER_MODULE(apm, nexus, apm_driver, apm_devclass, 0, 0);
DRIVER_MODULE(apm, nexus, apm_driver, apm_devclass, apm_modevent, 0);
MODULE_VERSION(apm, 1);
static int
apm_pm_func(u_long cmd, void *arg, ...)
{
int state, apm_state;
int error;
va_list ap;
error = 0;
switch (cmd) {
case POWER_CMD_SUSPEND:
va_start(ap, arg);
state = va_arg(ap, int);
va_end(ap);
switch (state) {
case POWER_SLEEP_STATE_STANDBY:
apm_state = PMST_STANDBY;
break;
case POWER_SLEEP_STATE_SUSPEND:
case POWER_SLEEP_STATE_HIBERNATE:
apm_state = PMST_SUSPEND;
break;
default:
error = EINVAL;
goto out;
}
apm_suspend(apm_state);
break;
default:
error = EINVAL;
goto out;
}
out:
return (error);
}
static void
apm_pm_register(void *arg)
{
int disabled = 0;
resource_int_value("apm", 0, "disabled", &disabled);
if (disabled == 0)
power_pm_register(POWER_PM_TYPE_APM, apm_pm_func, NULL);
}
SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, apm_pm_register, 0);

98
sys/i386/bios/apm.c
View File

@ -32,9 +32,11 @@
#include <sys/uio.h>
#include <sys/signalvar.h>
#include <sys/sysctl.h>
#include <sys/power.h>
#include <machine/apm_bios.h>
#include <machine/segments.h>
#include <machine/clock.h>
#include <machine/stdarg.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>
@ -53,6 +55,8 @@ static void apm_resume __P((void));
static int apm_bioscall(void);
static int apm_check_function_supported __P((u_int version, u_int func));
static int apm_pm_func(u_long, void*, ...);
static u_long apm_version;
int apm_evindex;
@ -741,6 +745,30 @@ apm_not_halt_cpu(void)
/* device driver definitions */
/*
* Module event
*/
static int
apm_modevent(struct module *mod, int event, void *junk)
{
switch (event) {
case MOD_LOAD:
if (!cold)
return (EPERM);
break;
case MOD_UNLOAD:
if (!cold && power_pm_get_type() == POWER_PM_TYPE_APM)
return (EBUSY);
break;
default:
break;
}
return (0);
}
/*
* Create "connection point"
*/
@ -749,6 +777,11 @@ apm_identify(driver_t *driver, device_t parent)
{
device_t child;
if (!cold) {
printf("Don't load this driver from userland!!\n");
return;
}
child = BUS_ADD_CHILD(parent, 0, "apm", 0);
if (child == NULL)
panic("apm_identify");
@ -777,6 +810,12 @@ apm_probe(device_t dev)
return ENXIO;
}
if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
power_pm_get_type() != POWER_PM_TYPE_APM) {
printf("apm: Other PM system enabled.\n");
return ENXIO;
}
if (resource_int_value("apm", 0, "flags", &flags) != 0)
flags = 0;
@ -1038,10 +1077,13 @@ apm_attach(device_t dev)
EVENTHANDLER_REGISTER(shutdown_final, apm_power_off, NULL,
SHUTDOWN_PRI_LAST);
/* Register APM again to pass the correct argument of pm_func. */
power_pm_register(POWER_PM_TYPE_APM, apm_pm_func, sc);
sc->initialized = 1;
sc->suspending = 0;
make_dev(&apm_cdevsw, 0, 0, 5, 0660, "apm");
make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm");
make_dev(&apm_cdevsw, 8, 0, 5, 0660, "apmctl");
return 0;
}
@ -1315,4 +1357,56 @@ static driver_t apm_driver = {
static devclass_t apm_devclass;
DRIVER_MODULE(apm, nexus, apm_driver, apm_devclass, 0, 0);
DRIVER_MODULE(apm, nexus, apm_driver, apm_devclass, apm_modevent, 0);
MODULE_VERSION(apm, 1);
static int
apm_pm_func(u_long cmd, void *arg, ...)
{
int state, apm_state;
int error;
va_list ap;
error = 0;
switch (cmd) {
case POWER_CMD_SUSPEND:
va_start(ap, arg);
state = va_arg(ap, int);
va_end(ap);
switch (state) {
case POWER_SLEEP_STATE_STANDBY:
apm_state = PMST_STANDBY;
break;
case POWER_SLEEP_STATE_SUSPEND:
case POWER_SLEEP_STATE_HIBERNATE:
apm_state = PMST_SUSPEND;
break;
default:
error = EINVAL;
goto out;
}
apm_suspend(apm_state);
break;
default:
error = EINVAL;
goto out;
}
out:
return (error);
}
static void
apm_pm_register(void *arg)
{
int disabled = 0;
resource_int_value("apm", 0, "disabled", &disabled);
if (disabled == 0)
power_pm_register(POWER_PM_TYPE_APM, apm_pm_func, NULL);
}
SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, apm_pm_register, 0);

11
sys/i386/i386/tsc.c
View File

@ -49,7 +49,6 @@
*/
#include "opt_clock.h"
#include "opt_apm.h"
#include "opt_mca.h"
#include <sys/param.h>
@ -63,6 +62,7 @@
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/cons.h>
#include <sys/power.h>
#include <machine/clock.h>
#ifdef CLK_CALIBRATION_LOOP
@ -823,7 +823,6 @@ startrtclock()
* Curse Intel for leaving the counter out of the I/O APIC.
*/
#ifdef DEV_APM
/*
* We can not use the TSC if we support APM. Precise timekeeping
* on an APM'ed machine is at best a fools pursuit, since
@ -834,13 +833,11 @@ startrtclock()
* We don't know at this point whether APM is going to be used
* or not, nor when it might be activated. Play it safe.
*/
{
int disabled = 0;
resource_int_value("apm", 0, "disabled", &disabled);
if (disabled == 0)
if (power_pm_get_type() == POWER_PM_TYPE_APM) {
if (bootverbose)
printf("TSC initialization skipped: APM enabled.\n");
return;
}
#endif /* DEV_APM */
if (tsc_present && tsc_freq != 0 && !tsc_is_broken) {
tsc_timecounter.tc_frequency = tsc_freq;

11
sys/i386/isa/clock.c
View File

@ -49,7 +49,6 @@
*/
#include "opt_clock.h"
#include "opt_apm.h"
#include "opt_mca.h"
#include <sys/param.h>
@ -63,6 +62,7 @@
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/cons.h>
#include <sys/power.h>
#include <machine/clock.h>
#ifdef CLK_CALIBRATION_LOOP
@ -823,7 +823,6 @@ startrtclock()
* Curse Intel for leaving the counter out of the I/O APIC.
*/
#ifdef DEV_APM
/*
* We can not use the TSC if we support APM. Precise timekeeping
* on an APM'ed machine is at best a fools pursuit, since
@ -834,13 +833,11 @@ startrtclock()
* We don't know at this point whether APM is going to be used
* or not, nor when it might be activated. Play it safe.
*/
{
int disabled = 0;
resource_int_value("apm", 0, "disabled", &disabled);
if (disabled == 0)
if (power_pm_get_type() == POWER_PM_TYPE_APM) {
if (bootverbose)
printf("TSC initialization skipped: APM enabled.\n");
return;
}
#endif /* DEV_APM */
if (tsc_present && tsc_freq != 0 && !tsc_is_broken) {
tsc_timecounter.tc_frequency = tsc_freq;

11
sys/isa/atrtc.c
View File

@ -49,7 +49,6 @@
*/
#include "opt_clock.h"
#include "opt_apm.h"
#include "opt_mca.h"
#include <sys/param.h>
@ -63,6 +62,7 @@
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/cons.h>
#include <sys/power.h>
#include <machine/clock.h>
#ifdef CLK_CALIBRATION_LOOP
@ -823,7 +823,6 @@ startrtclock()
* Curse Intel for leaving the counter out of the I/O APIC.
*/
#ifdef DEV_APM
/*
* We can not use the TSC if we support APM. Precise timekeeping
* on an APM'ed machine is at best a fools pursuit, since
@ -834,13 +833,11 @@ startrtclock()
* We don't know at this point whether APM is going to be used
* or not, nor when it might be activated. Play it safe.
*/
{
int disabled = 0;
resource_int_value("apm", 0, "disabled", &disabled);
if (disabled == 0)
if (power_pm_get_type() == POWER_PM_TYPE_APM) {
if (bootverbose)
printf("TSC initialization skipped: APM enabled.\n");
return;
}
#endif /* DEV_APM */
if (tsc_present && tsc_freq != 0 && !tsc_is_broken) {
tsc_timecounter.tc_frequency = tsc_freq;

76
sys/kern/subr_power.c Normal file
View File

@ -0,0 +1,76 @@
/*-
* Copyright (c) 2001 Mitsuru IWASAKI
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/power.h>
static u_int power_pm_type = POWER_PM_TYPE_NONE;
static power_pm_fn_t power_pm_fn = NULL;
static void *power_pm_arg = NULL;
int
power_pm_register(u_int pm_type, power_pm_fn_t pm_fn, void *pm_arg)
{
int error;
if (power_pm_type == POWER_PM_TYPE_NONE ||
power_pm_type == pm_type) {
power_pm_type = pm_type;
power_pm_fn = pm_fn;
power_pm_arg = pm_arg;
error = 0;
} else {
error = ENXIO;
}
return (error);
}
u_int
power_pm_get_type(void)
{
return (power_pm_type);
}
void
power_pm_suspend(int state)
{
if (power_pm_fn == NULL)
return;
if (state != POWER_SLEEP_STATE_STANDBY &&
state != POWER_SLEEP_STATE_SUSPEND &&
state != POWER_SLEEP_STATE_HIBERNATE)
return;
power_pm_fn(POWER_CMD_SUSPEND, power_pm_arg, state);
}

4
sys/sys/kernel.h
View File

@ -119,8 +119,8 @@ enum sysinit_sub_id {
SI_SUB_WITNESS = 0x1A80000, /* witness initialization */
SI_SUB_LOCK = 0x1B00000, /* lockmgr locks */
SI_SUB_EVENTHANDLER = 0x1C00000, /* eventhandler init */
SI_SUB_CPU = 0x2000000, /* CPU resource(s)*/
SI_SUB_KLD = 0x2100000, /* KLD and module setup */
SI_SUB_KLD = 0x2000000, /* KLD and module setup */
SI_SUB_CPU = 0x2100000, /* CPU resource(s)*/
SI_SUB_INTRINSIC = 0x2200000, /* proc 0*/
SI_SUB_VM_CONF = 0x2300000, /* config VM, set limits*/
SI_SUB_RUN_QUEUE = 0x2400000, /* set up run queue*/

51
sys/sys/power.h Normal file
View File

@ -0,0 +1,51 @@
/*-
* Copyright (c) 2001 Mitsuru IWASAKI
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SYS_POWER_H_
#define _SYS_POWER_H_
/* Power management system type */
#define POWER_PM_TYPE_APM 0x00
#define POWER_PM_TYPE_ACPI 0x01
#define POWER_PM_TYPE_NONE 0xff
/* Commands for Power management function */
#define POWER_CMD_SUSPEND 0x00
/* Sleep state */
#define POWER_SLEEP_STATE_STANDBY 0x00
#define POWER_SLEEP_STATE_SUSPEND 0x01
#define POWER_SLEEP_STATE_HIBERNATE 0x02
typedef int (*power_pm_fn_t)(u_long, void*, ...);
extern int power_pm_register(u_int, power_pm_fn_t, void *);
extern u_int power_pm_get_type(void);
extern void power_pm_suspend(int);
#endif /* !_SYS_POWER_H_ */