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+.\" Copyright (c) 1999
+.\" Nick Hibma <n_hibma@FreeBSD.org>. All rights reserved.
+.\"
+.\" 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 AUTHOR 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 AUTHOR 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 December 24, 2020
+.Dt OHCI 4
+.Os
+.Sh NAME
+.Nm ohci
+.Nd OHCI USB Host Controller driver
+.Sh SYNOPSIS
+.Cd "device ohci"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for OHCI-type PCI based USB controllers.
+.Sh HARDWARE
+The
+.Nm
+driver supports all OHCI v1.0 compliant controllers including:
+.Pp
+.Bl -bullet -compact
+.It
+AcerLabs M5237 (Aladdin-V)
+.It
+AMD-756
+.It
+OPTi 82C861 (FireLink)
+.It
+NEC uPD 9210
+.It
+CMD Tech 670 (USB0670)
+.It
+CMD Tech 673 (USB0673)
+.It
+NVIDIA nForce3
+.El
+.Sh SYSCTL VARIABLES
+The following variables are available as both
+.Xr sysctl 8
+variables and
+.Xr loader 8
+tunables:
+.Bl -tag -width indent
+.It Va hw.usb.ohci.debug
+Debug output level, where 0 is debugging disabled and larger values increase
+debug message verbosity.
+Default is 0.
+.El
+.Sh SEE ALSO
+.Xr ehci 4 ,
+.Xr uhci 4 ,
+.Xr xhci 4
+.Sh HISTORY
+The
+.Nm
+device driver first appeared in
+.Fx 3.0 .
+.Sh AUTHORS
+The
+.Nm
+driver was written by
+.An Lennart Augustsson Aq Mt augustss@carlstedt.se
+for the
+.Nx
+project.