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+.\"     $OpenBSD: epic.4,v 1.1 2005/05/10 02:56:01 brad Exp $
+.\"
+.\" Copyright (c) 1998 Jason L. Wright (jason@thought.net)
+.\" 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 ``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 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 May 09, 2005
+.Dt EPIC 4
+.Os
+.Sh NAME
+.Nm epic
+.Nd SMC83C170 (EPIC/100) Ethernet driver
+.Sh SYNOPSIS
+.Cd "epic* at pci?"
+.Cd "qsphy* at mii?"
+.Sh DESCRIPTION
+The
+.Nm
+interface provides access to the 10Mb/s and 100Mb/s Ethernet networks via the
+.Tn SMC
+.Tn EPIC
+chipset.
+This driver provides support for the
+.Tn SMC
+.Tn EtherPower II 10/100
+Ethernet cards.
+.Pp
+Each of the host's network addresses
+is specified at boot time with an
+.Dv SIOCSIFADDR
+.Xr ioctl 2 .
+The
+.Nm
+interface employs the address resolution protocol described in
+.Xr arp 4
+to dynamically map between Internet and Ethernet addresses on the local
+network.
+.Pp
+When a
+.Nm
+interface is brought up, by default, it will attempt to auto-negotiate the
+link speed and duplex.
+The speeds, in order of attempt, are: 100Mb/s Full Duplex, 100Mb/s Half Duplex,
+10 Mb/s Full Duplex, and 10 Mb/s Half Duplex.
+.Pp
+The
+.Nm
+supports several media types, which are selected via the
+.Xr ifconfig 8
+command.
+The supported media types are:
+.Bl -tag -width 6n -offset indent
+.It media autoselect
+Attempt to autoselect the media type (default)
+.It media 100baseFX mediaopt full-duplex
+Use 100baseFX (fiber), full duplex
+.It media 100baseFX Op mediaopt half-duplex
+Use 100baseFX (fiber), half duplex
+.It media 100baseTX mediaopt full-duplex
+Use 100baseTX, full duplex
+.It media 100baseTX Op mediaopt half-duplex
+Use 100baseTX, half duplex
+.It media 100baseTX mediaopt loopback
+Put the interface into loopback mode
+.It media 10baseT mediaopt full-duplex
+Use 10baseT, full duplex
+.It media 10baseT Op mediaopt half-duplex
+Use 10baseT, half duplex
+.It media 10baseT mediaopt loopback
+Put the interface into loopback mode
+.El
+.Sh SEE ALSO
+.Xr arp 4 ,
+.Xr ifmedia 4 ,
+.Xr inet 4 ,
+.Xr intro 4 ,
+.Xr netintro 4 ,
+.Xr pci 4 ,
+.Xr qsphy 4 ,
+.Xr hostname.if 5 ,
+.Xr ifconfig 8
+.Sh HISTORY
+The
+.Nm
+device driver first appeared in
+.Nx 1.4 .
+.Ox
+support was added in
+.Ox 3.8 .
+.Sh AUTHORS
+Jason R. Thorpe