Start at a power management framework for sysmon. Right now we just
provide some VERY basic support for power/sleep buttons and lid switches; if someone presses the power button, shut down the system semi-gracefully. Eventually, we will send events for all types of button/lid events down to a userland power management daemon, which will be able to define a separate policy for each button/switch.
This commit is contained in:
thorpej
parent
9871c6a16c
commit
b0f79c65ce
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@ -1,4 +1,4 @@
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# $NetBSD: files.sysmon,v 1.1 2002/04/16 21:00:29 thorpej Exp $
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# $NetBSD: files.sysmon,v 1.2 2003/04/17 01:02:21 thorpej Exp $
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define sysmon_envsys
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define sysmon_envsys
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file dev/sysmon/sysmon_envsys.c sysmon_envsys needs-flag
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file dev/sysmon/sysmon_envsys.c sysmon_envsys needs-flag
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@ -6,4 +6,8 @@ file dev/sysmon/sysmon_envsys.c sysmon_envsys needs-flag
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define sysmon_wdog
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define sysmon_wdog
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file dev/sysmon/sysmon_wdog.c sysmon_wdog needs-flag
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file dev/sysmon/sysmon_wdog.c sysmon_wdog needs-flag
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file dev/sysmon/sysmon.c sysmon_envsys | sysmon_wdog
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define sysmon_power
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file dev/sysmon/sysmon_power.c sysmon_power needs-flag
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file dev/sysmon/sysmon.c sysmon_envsys | sysmon_wdog |
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sysmon_power
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@ -0,0 +1,166 @@
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/* $NetBSD: sysmon_power.c,v 1.1 2003/04/17 01:02:21 thorpej Exp $ */
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/*
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* Copyright (c) 2003 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Power management framework for sysmon.
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*
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* We defer to a power management daemon running in userspace, since
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* power management is largely a policy issue. This merely provides
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* for power management event notification to that daemon.
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*/
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#include <sys/param.h>
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#include <sys/reboot.h>
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#include <sys/systm.h>
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#include <dev/sysmon/sysmonvar.h>
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static LIST_HEAD(, sysmon_pswitch) sysmon_pswitch_list =
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LIST_HEAD_INITIALIZER(sysmon_pswitch_list);
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static struct simplelock sysmon_pswitch_list_slock =
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SIMPLELOCK_INITIALIZER;
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static struct proc *sysmon_power_daemon;
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/*
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* sysmon_pswitch_register:
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*
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* Register a power switch device.
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*/
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int
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sysmon_pswitch_register(struct sysmon_pswitch *smpsw)
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{
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simple_lock(&sysmon_pswitch_list_slock);
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LIST_INSERT_HEAD(&sysmon_pswitch_list, smpsw, smpsw_list);
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simple_unlock(&sysmon_pswitch_list_slock);
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return (0);
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}
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/*
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* sysmon_pswitch_unregister:
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*
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* Unregister a power switch device.
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*/
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void
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sysmon_pswitch_unregister(struct sysmon_pswitch *smpsw)
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{
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simple_lock(&sysmon_pswitch_list_slock);
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LIST_REMOVE(smpsw, smpsw_list);
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simple_unlock(&sysmon_pswitch_list_slock);
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}
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/*
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* sysmon_pswitch_event:
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*
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* Register an event on a power switch device.
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*/
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void
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sysmon_pswitch_event(struct sysmon_pswitch *smpsw, int event)
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{
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/*
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* If a power management daemon is connected, then simply
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* deliver the event to them. If not, we need to try to
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* do something reasonable ourselves.
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*/
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if (sysmon_power_daemon != NULL) {
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/* XXX */
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return;
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}
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switch (smpsw->smpsw_type) {
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case SMPSW_TYPE_POWER:
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if (event != SMPSW_EVENT_PRESSED) {
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/* just ignore it */
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return;
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}
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/*
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* Attempt a somewhat graceful shutdown of the system,
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* as if the user has issued a reboot(2) call with
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* RB_POWERDOWN.
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*/
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printf("%s: power button pressed, shutting down!\n",
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smpsw->smpsw_name);
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cpu_reboot(RB_POWERDOWN, NULL);
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break;
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case SMPSW_TYPE_SLEEP:
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if (event != SMPSW_EVENT_PRESSED) {
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/* just ignore it */
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return;
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}
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/*
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* Try to enter a "sleep" state.
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*/
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/* XXX */
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printf("%s: sleep button pressed.\n", smpsw->smpsw_name);
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break;
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case SMPSW_TYPE_LID:
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switch (event) {
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case SMPSW_EVENT_PRESSED:
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/*
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* Try to enter a "standby" state.
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*/
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/* XXX */
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printf("%s: lid closed.\n", smpsw->smpsw_name);
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break;
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case SMPSW_EVENT_RELEASED:
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/*
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* Come out of "standby" state.
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*/
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/* XXX */
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printf("%s: lid opened.\n", smpsw->smpsw_name);
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break;
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default:
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printf("%s: unknown lid switch event: %d\n",
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smpsw->smpsw_name, event);
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}
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break;
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default:
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printf("%s: sysmon_pswitch_event can't handle me.\n",
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smpsw->smpsw_name);
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}
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: sysmonvar.h,v 1.4 2003/04/10 18:04:20 thorpej Exp $ */
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/* $NetBSD: sysmonvar.h,v 1.5 2003/04/17 01:02:21 thorpej Exp $ */
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/*-
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/*-
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* Copyright (c) 2000 Zembu Labs, Inc.
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* Copyright (c) 2000 Zembu Labs, Inc.
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@ -101,4 +101,27 @@ int sysmonioctl_wdog(dev_t, u_long, caddr_t, int, struct proc *);
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int sysmon_wdog_register(struct sysmon_wdog *);
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int sysmon_wdog_register(struct sysmon_wdog *);
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void sysmon_wdog_unregister(struct sysmon_wdog *);
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void sysmon_wdog_unregister(struct sysmon_wdog *);
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/*****************************************************************************
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* Power management support
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*****************************************************************************/
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struct sysmon_pswitch {
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const char *smpsw_name; /* power switch name */
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int smpsw_type; /* power switch type */
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LIST_ENTRY(sysmon_pswitch) smpsw_list;
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};
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#define SMPSW_TYPE_POWER 0 /* power button */
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#define SMPSW_TYPE_SLEEP 1 /* sleep button */
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#define SMPSW_TYPE_LID 2 /* lid switch */
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#define SMPSW_EVENT_PRESSED 0 /* button pressed/lid closed */
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#define SMPSW_EVENT_RELEASED 1 /* button released/lid opened */
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int sysmon_pswitch_register(struct sysmon_pswitch *);
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void sysmon_pswitch_unregister(struct sysmon_pswitch *);
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void sysmon_pswitch_event(struct sysmon_pswitch *, int);
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#endif /* _DEV_SYSMON_SYSMONVAR_H_ */
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#endif /* _DEV_SYSMON_SYSMONVAR_H_ */
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