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.\"	Nick Hibma <n_hibma@FreeBSD.org>. All rights reserved.
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.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.