1.\" 2.\" Copyright (c) 2015 John Baldwin <jhb@FreeBSD.org> 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD$ 27.\" 28.Dd February 5, 2015 29.Dt DEVCTL 8 30.Os 31.Sh NAME 32.Nm devctl 33.Nd device control utility 34.Sh SYNOPSIS 35.Nm 36.Cm attach 37.Ar device 38.Nm 39.Cm detach 40.Op Fl f 41.Ar device 42.Nm 43.Cm disable 44.Op Fl f 45.Ar device 46.Nm 47.Cm enable 48.Ar device 49.Nm 50.Cm suspend 51.Ar device 52.Nm 53.Cm resume 54.Ar device 55.Nm 56.Cm set driver 57.Op Fl f 58.Ar device driver 59.Sh DESCRIPTION 60The 61.Nm 62utility adjusts the state of individual devices in the kernel's 63internal device hierarchy. 64Each invocation of 65.Nm 66consists of a single command followed by command-specific arguments. 67Each command operates on a single device specified via the 68.Ar device 69argument. 70The 71.Ar device 72may be specified either as the name of an existing device or as a 73bus-specific address. 74More details on supported address formats can be found in 75.Xr devctl 3 . 76.Pp 77The following commands are supported: 78.Bl -tag -width indent 79.It Cm attach Ar device 80Force the kernel to re-probe the device. 81If a suitable driver is found, 82it is attached to the device. 83.It Xo Cm detach 84.Op Fl f 85.Ar device 86.Xc 87Detach the device from its current device driver. 88If the 89.Fl f 90flag is specified, 91the device driver will be detached even if the device is busy. 92.It Xo Cm disable 93.Op Fl f 94.Ar device 95.Xc 96Disable a device. 97If the device is currently attached to a device driver, 98the device driver will be detached from the device, 99but the device will retain its current name. 100If the 101.Fl f 102flag is specified, 103the device driver will be detached even if the device is busy. 104.It Cm enable Ar device 105Enable a device. 106The device will probe and attach if a suitable device driver is found. 107Note that this can re-enable a device disabled at boot time via a 108loader tunable. 109.It Cm suspend Ar device 110Suspend a device. 111This may include placing the device in a reduced power state. 112.It Cm resume device 113Resume a suspended device to a fully working state. 114.It Xo Cm set driver 115.Op Fl f 116.Ar device driver 117.Xc 118Force the device to use a device driver named 119.Ar driver . 120If the device is already attached to a device driver and the 121.Fl f 122flag is specified, 123the device will be detached from its current device driver before it is 124attached to the new device driver. 125If the device is already attached to a device driver and the 126.Fl f 127flag is not specified, 128the device will not be changed. 129.El 130.Sh SEE ALSO 131.Xr devctl 3 , 132.Xr devinfo 8 133.Sh HISTORY 134The 135.Nm 136utility first appeared in 137.Fx 11.0 . 138