1.\" $NetBSD: drvctl.8,v 1.12 2011/08/07 13:00:35 jmcneill Exp $ 2.\" 3.\" Copyright (c) 2004 4.\" Matthias Drochner. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25.\" SUCH DAMAGE. 26.\" 27.Dd August 7, 2011 28.Dt DRVCTL 8 29.Os 30.Sh NAME 31.Nm drvctl 32.Nd tool to rescan busses and detach devices on user request 33.Sh SYNOPSIS 34.Nm 35.Fl r 36.Op Fl a Ar attribute 37.Ar busdevice 38.Op locator ... 39.Nm 40.Fl d 41.Ar device 42.Nm 43.Op Fl nt 44.Fl l 45.Op Ar device 46.Nm 47.Fl p 48.Ar device 49.Op Ar property ... 50.Nm 51.Fl Q 52.Ar device 53.Nm 54.Fl R 55.Ar device 56.Nm 57.Fl S 58.Ar device 59.Sh DESCRIPTION 60The 61.Nm 62program works with the 63.Xr drvctl 4 64pseudo-driver, and allows to rescan busses and to detach 65drivers from devices. 66.Pp 67The following options are available: 68.Bl -tag -width 123456 69.It Fl a 70Give the interface attribute where children are to be 71attached to (and which defines the interpretation of 72the locator information). 73This will only be needed in rare cases where the bus 74has multiple attributes. 75.It Fl d 76Detach the device driver from the device given by the 77.Ar device 78argument. 79.It Fl l 80List the children of the device specified by the 81.Ar device 82argument. 83If 84.Ar device 85is not specified, list roots of the device tree instead. 86Output comes in two columns. 87The first column is 88.Ar device , 89or 90.Dq root 91if 92.Ar device 93is not specified. 94The second column is the child. 95.It Fl n 96Suppress first column in 97.Fl l 98output. 99.It Fl p 100Get properties for the device specified by the 101.Ar device 102argument. 103If 104.Ar property 105is specified, the value of that property is printed, otherwise 106the properties are displayed as an XML property list. 107.It Fl Q 108Resume the ancestors of 109.Ar device , 110.Ar device 111itself, and all of its descendants. 112.It Fl R 113Resume both the ancestors of 114.Ar device 115and 116.Ar device 117itself. 118.It Fl r 119Rescan the bus given by the 120.Ar busdevice 121argument. 122The scan range can be restricted by an optional 123.Ar locator 124list. 125.It Fl S 126Suspend both the descendants of 127.Ar device 128and 129.Ar device 130itself. 131.It Fl t 132Print a tree of devices in 133.Fl l 134output. 135.El 136.Sh FILES 137.Pa /dev/drvctl 138.Sh SEE ALSO 139.Xr proplib 3 , 140.\" .Xr drvctl 4 , 141.Xr autoconf 9 142.Sh BUGS 143Currently, there is no good way to get information about locator 144lengths and default values (which is present at kernel configuration 145time) out of a running kernel. 146Thus the locator handling is less intelligent as it could be. 147