160 lines
3.9 KiB
Groff
160 lines
3.9 KiB
Groff
.\" $NetBSD: drvctl.8,v 1.15 2015/02/25 09:01:08 wiz Exp $
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.\"
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.\" Copyright (c) 2004
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.\" Matthias Drochner. All rights reserved.
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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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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.Dd February 25, 2015
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.Dt DRVCTL 8
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.Os
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.Sh NAME
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.Nm drvctl
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.Nd tool to rescan busses and detach devices on user request
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.Sh SYNOPSIS
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.Nm
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.Fl r
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.Op Fl a Ar attribute
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.Ar busdevice
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.Op locator ...
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.Nm
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.Fl d
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.Ar device
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.Nm
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.Op Fl nt
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.Fl l
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.Op Ar device
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.Nm
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.Op Fl n
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.Fl p
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.Ar device
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.Op Ar property ...
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.Nm
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.Fl Q
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.Ar device
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.Nm
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.Fl R
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.Ar device
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.Nm
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.Fl S
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.Ar device
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.Sh DESCRIPTION
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The
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.Nm
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program works with the
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.Xr drvctl 4
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pseudo-driver, and allows to rescan busses and to detach
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drivers from devices.
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.Pp
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The following options are available:
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.Bl -tag -width 123456
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.It Fl a
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Give the interface attribute where children are to be
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attached to (and which defines the interpretation of
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the locator information).
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This will only be needed in rare cases where the bus
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has multiple attributes.
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If there are multiple attributes, and one is not specified,
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.Nm
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will return an Invalid argument.
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In such cases, the
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.Fl p
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option can be used to determine the available interface
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attributes.
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.It Fl d
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Detach the device driver from the device given by the
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.Ar device
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argument.
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.It Fl l
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List the children of the device specified by the
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.Ar device
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argument.
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If
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.Ar device
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is not specified, list roots of the device tree instead.
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Output comes in two columns.
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The first column is
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.Ar device ,
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or
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.Dq root
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if
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.Ar device
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is not specified.
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The second column is the child.
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.It Fl n
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Suppress first column in
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.Fl l
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output.
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Suppress non-XML headers in
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.Fl p
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output.
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.It Fl p
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Get properties for the device specified by the
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.Ar device
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argument.
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If
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.Ar property
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is specified, the value of that property is printed, otherwise
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the properties are displayed as an XML property list.
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The property can be given as a path of dictionary keys and numeric
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array indexes separated by slashes.
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.It Fl Q
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Resume the ancestors of
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.Ar device ,
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.Ar device
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itself, and all of its descendants.
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.It Fl R
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Resume both the ancestors of
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.Ar device
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and
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.Ar device
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itself.
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.It Fl r
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Rescan the bus given by the
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.Ar busdevice
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argument.
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The scan range can be restricted by an optional
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.Ar locator
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list.
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.It Fl S
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Suspend both the descendants of
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.Ar device
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and
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.Ar device
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itself.
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.It Fl t
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Print a tree of devices in
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.Fl l
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output.
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.El
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.Sh FILES
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.Pa /dev/drvctl
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.Sh SEE ALSO
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.Xr proplib 3 ,
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.\" .Xr drvctl 4 ,
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.Xr autoconf 9
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.Sh BUGS
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Currently, there is no good way to get information about locator
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lengths and default values (which is present at kernel configuration
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time) out of a running kernel.
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Thus the locator handling is less intelligent than it could be.
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