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+.\" $NetBSD: satmgr.4,v 1.6 2023/05/07 11:41:49 andvar Exp $
+.\"
+.\" Copyright (c) 2011-2012 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to The NetBSD Foundation
+.\" by Tohru Nishimura.
+.\"
+.\" 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+.\"
+.Dd January 15, 2012
+.Dt SATMGR 4 sandpoint
+.Os
+.Sh NAME
+.Nm satmgr
+.Nd driver for satellite processor, controlling power, front panel LEDs, and buttons
+.Sh SYNOPSIS
+.Cd "satmgr0 at eumb? unit 0"
+.Cd "satmgr0 at eumb? unit 1"
+.Sh DESCRIPTION
+This driver provides an interface to the
+.Tn NAS
+builtin satellite microprocessor which controls the power, front
+panel LEDs, and push buttons.
+Communication is performed through character sequences, whose
+definition and usage depend on the
+.Tn NAS
+product models.
+.Pp
+The device file
+.Pa /dev/satmgr
+can be written to control the satellite processor and the LEDs.
+Reading it will return single characters for button press events.
+This facility was designed to implement a
+.Tn NAS
+control
+.Tn CGI
+program.
+.Pp
+.Nm
+detects a soft power-off condition, which is triggered by holding
+the front panel power button pressed for several seconds.
+This driver can optionally invoke
+.Xr powerd 8
+to get a finer control over the system shutdown procedure.
+It is capable of reporting a power-button-pressed event.
+Refer to the
+.Xr powerd 8
+manual section for more details.
+.Pp
+.Tn NAS
+products supported by
+.Nm :
+.Bl -bullet -compact
+.It
+Buffalo LinkStation
+.It
+Conceptronic CH3WNAS
+.It
+D-Link DSM-G600 (Rev. B)
+.It
+Iomega StorCenter
+.It
+KuroBox
+.It
+LevelOne FNS-5000B
+.It
+QNAP TurboStation
+.It
+Synology DiskStation
+.El
+.Sh SYSCTL VARIABLES
+The following
+.Xr sysctl 3
+variables are available for
+.Tn "Kurobox/Linkstation"
+.Tn NAS
+products:
+.Bl -tag -width indent
+.It machdep.satmgr.hwwdog_enable
+Toggle the system watchdog on (1) or off (0).
+.El
+.Pp
+For the
+.Tn "Iomega StorCenter"
+the following variables have been defined:
+.Bl -tag -width indent
+.It machdep.satmgr.fan_low_temp
+Set the temperature below which the fan is turned off.
+.It machdep.satmgr.fan_high_temp
+Set the temperature above which the fan is turned on.
+.El
+.Sh FILES
+.Bl -tag -width /dev/satmgrX -compact
+.It Pa /dev/satmgr
+communication interface to
+.Nm .
+.It Pa /dev/power
+event notify channel to
+.Xr powerd 8 .
+.El
+.Sh SEE ALSO
+.Xr powerd 8 ,
+.Xr sysctl 8
+.Sh HISTORY
+The
+.Nm
+driver first appeared in
+.Nx 6.0 .