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[src/trunk]: src/sys/dev/sysmon Start at a power management framework for sys...
details: https://anonhg.NetBSD.org/src/rev/f5324de32029
branches: trunk
changeset: 545852:f5324de32029
user: thorpej <thorpej%NetBSD.org@localhost>
date: Thu Apr 17 01:02:21 2003 +0000
description:
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.
diffstat:
sys/dev/sysmon/files.sysmon | 8 +-
sys/dev/sysmon/sysmon_power.c | 166 ++++++++++++++++++++++++++++++++++++++++++
sys/dev/sysmon/sysmonvar.h | 25 ++++++-
3 files changed, 196 insertions(+), 3 deletions(-)
diffs (226 lines):
diff -r 2a8197c7475c -r f5324de32029 sys/dev/sysmon/files.sysmon
--- a/sys/dev/sysmon/files.sysmon Thu Apr 17 00:33:44 2003 +0000
+++ b/sys/dev/sysmon/files.sysmon Thu Apr 17 01:02:21 2003 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.sysmon,v 1.1 2002/04/16 21:00:29 thorpej Exp $
+# $NetBSD: files.sysmon,v 1.2 2003/04/17 01:02:21 thorpej Exp $
define sysmon_envsys
file dev/sysmon/sysmon_envsys.c sysmon_envsys needs-flag
@@ -6,4 +6,8 @@
define sysmon_wdog
file dev/sysmon/sysmon_wdog.c sysmon_wdog needs-flag
-file dev/sysmon/sysmon.c sysmon_envsys | sysmon_wdog
+define sysmon_power
+file dev/sysmon/sysmon_power.c sysmon_power needs-flag
+
+file dev/sysmon/sysmon.c sysmon_envsys | sysmon_wdog |
+ sysmon_power
diff -r 2a8197c7475c -r f5324de32029 sys/dev/sysmon/sysmon_power.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/sysmon/sysmon_power.c Thu Apr 17 01:02:21 2003 +0000
@@ -0,0 +1,166 @@
+/* $NetBSD: sysmon_power.c,v 1.1 2003/04/17 01:02:21 thorpej Exp $ */
+
+/*
+ * Copyright (c) 2003 Wasabi Systems, Inc.
+ * All rights reserved.
+ *
+ * Written by Jason R. Thorpe for Wasabi Systems, Inc.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed for the NetBSD Project by
+ * Wasabi Systems, Inc.
+ * 4. The name of Wasabi Systems, Inc. may not be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
+ * 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.
+ */
+
+/*
+ * Power management framework for sysmon.
+ *
+ * We defer to a power management daemon running in userspace, since
+ * power management is largely a policy issue. This merely provides
+ * for power management event notification to that daemon.
+ */
+
+#include <sys/param.h>
+#include <sys/reboot.h>
+#include <sys/systm.h>
+
+#include <dev/sysmon/sysmonvar.h>
+
+static LIST_HEAD(, sysmon_pswitch) sysmon_pswitch_list =
+ LIST_HEAD_INITIALIZER(sysmon_pswitch_list);
+static struct simplelock sysmon_pswitch_list_slock =
+ SIMPLELOCK_INITIALIZER;
+
+static struct proc *sysmon_power_daemon;
+
+/*
+ * sysmon_pswitch_register:
+ *
+ * Register a power switch device.
+ */
+int
+sysmon_pswitch_register(struct sysmon_pswitch *smpsw)
+{
+
+ simple_lock(&sysmon_pswitch_list_slock);
+ LIST_INSERT_HEAD(&sysmon_pswitch_list, smpsw, smpsw_list);
+ simple_unlock(&sysmon_pswitch_list_slock);
+
+ return (0);
+}
+
+/*
+ * sysmon_pswitch_unregister:
+ *
+ * Unregister a power switch device.
+ */
+void
+sysmon_pswitch_unregister(struct sysmon_pswitch *smpsw)
+{
+
+ simple_lock(&sysmon_pswitch_list_slock);
+ LIST_REMOVE(smpsw, smpsw_list);
+ simple_unlock(&sysmon_pswitch_list_slock);
+}
+
+/*
+ * sysmon_pswitch_event:
+ *
+ * Register an event on a power switch device.
+ */
+void
+sysmon_pswitch_event(struct sysmon_pswitch *smpsw, int event)
+{
+
+ /*
+ * If a power management daemon is connected, then simply
+ * deliver the event to them. If not, we need to try to
+ * do something reasonable ourselves.
+ */
+ if (sysmon_power_daemon != NULL) {
+ /* XXX */
+ return;
+ }
+
+ switch (smpsw->smpsw_type) {
+ case SMPSW_TYPE_POWER:
+ if (event != SMPSW_EVENT_PRESSED) {
+ /* just ignore it */
+ return;
+ }
+
+ /*
+ * Attempt a somewhat graceful shutdown of the system,
+ * as if the user has issued a reboot(2) call with
+ * RB_POWERDOWN.
+ */
+ printf("%s: power button pressed, shutting down!\n",
+ smpsw->smpsw_name);
+ cpu_reboot(RB_POWERDOWN, NULL);
+ break;
+
+ case SMPSW_TYPE_SLEEP:
+ if (event != SMPSW_EVENT_PRESSED) {
+ /* just ignore it */
+ return;
+ }
+
+ /*
+ * Try to enter a "sleep" state.
+ */
+ /* XXX */
+ printf("%s: sleep button pressed.\n", smpsw->smpsw_name);
+ break;
+
+ case SMPSW_TYPE_LID:
+ switch (event) {
+ case SMPSW_EVENT_PRESSED:
+ /*
+ * Try to enter a "standby" state.
+ */
+ /* XXX */
+ printf("%s: lid closed.\n", smpsw->smpsw_name);
+ break;
+
+ case SMPSW_EVENT_RELEASED:
+ /*
+ * Come out of "standby" state.
+ */
+ /* XXX */
+ printf("%s: lid opened.\n", smpsw->smpsw_name);
+ break;
+
+ default:
+ printf("%s: unknown lid switch event: %d\n",
+ smpsw->smpsw_name, event);
+ }
+ break;
+
+ default:
+ printf("%s: sysmon_pswitch_event can't handle me.\n",
+ smpsw->smpsw_name);
+ }
+}
diff -r 2a8197c7475c -r f5324de32029 sys/dev/sysmon/sysmonvar.h
--- a/sys/dev/sysmon/sysmonvar.h Thu Apr 17 00:33:44 2003 +0000
+++ b/sys/dev/sysmon/sysmonvar.h Thu Apr 17 01:02:21 2003 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: sysmonvar.h,v 1.4 2003/04/10 18:04:20 thorpej Exp $ */
+/* $NetBSD: sysmonvar.h,v 1.5 2003/04/17 01:02:21 thorpej Exp $ */
/*-
* Copyright (c) 2000 Zembu Labs, Inc.
@@ -101,4 +101,27 @@
int sysmon_wdog_register(struct sysmon_wdog *);
void sysmon_wdog_unregister(struct sysmon_wdog *);
+/*****************************************************************************
+ * Power management support
+ *****************************************************************************/
+
+struct sysmon_pswitch {
+ const char *smpsw_name; /* power switch name */
+ int smpsw_type; /* power switch type */
+
+ LIST_ENTRY(sysmon_pswitch) smpsw_list;
+};
+
+#define SMPSW_TYPE_POWER 0 /* power button */
+#define SMPSW_TYPE_SLEEP 1 /* sleep button */
+#define SMPSW_TYPE_LID 2 /* lid switch */
+
+#define SMPSW_EVENT_PRESSED 0 /* button pressed/lid closed */
+#define SMPSW_EVENT_RELEASED 1 /* button released/lid opened */
+
+int sysmon_pswitch_register(struct sysmon_pswitch *);
+void sysmon_pswitch_unregister(struct sysmon_pswitch *);
+
+void sysmon_pswitch_event(struct sysmon_pswitch *, int);
+
#endif /* _DEV_SYSMON_SYSMONVAR_H_ */
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