1.\" Copyright (c) 1999 2.\" Nick Hibma <n_hibma@FreeBSD.org>. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" 27.Dd April 24, 2018 28.Dt UHCI 4 29.Os 30.Sh NAME 31.Nm uhci 32.Nd UHCI USB Host Controller driver 33.Sh SYNOPSIS 34.Cd "device uhci" 35.Sh DESCRIPTION 36The 37.Nm 38driver provides support for UHCI-type PCI based USB controllers. 39.Sh HARDWARE 40The 41.Nm 42driver supports all UHCI v1.1 compliant controllers including: 43.Pp 44.Bl -bullet -compact 45.It 46Intel 82371AB/EB (PIIX4) 47.It 48Intel 82371SB (PIIX3) 49.It 50VIA 83C572 51.El 52.Sh SYSCTL VARIABLES 53The following variables are available as both 54.Xr sysctl 8 55variables and 56.Xr loader 8 57tunables: 58.Bl -tag -width indent 59.It Va hw.usb.uhci.debug 60Debug output level, where 0 is debugging disabled and larger values increase 61debug message verbosity. 62Default is 0. 63.El 64.Sh SEE ALSO 65.Xr ehci 4 , 66.Xr ohci 4 , 67.Xr xhci 4 68.Sh HISTORY 69The 70.Nm 71device driver first appeared in 72.Fx 3.0 . 73.Sh AUTHORS 74The 75.Nm 76driver was written by 77.An Lennart Augustsson Aq Mt augustss@carlstedt.se 78for the 79.Nx 80project. 81