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+.\"	$NetBSD: sm.4,v 1.15 2017/09/06 17:11:41 wiz Exp $
+.\"
+.\" Copyright (c) 1997 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to The NetBSD Foundation
+.\" by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
+.\" NASA Ames Research Center.
+.\"
+.\" 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 September 6, 2017
+.Dt SM 4
+.Os
+.Sh NAME
+.Nm sm
+.Nd SMC91Cxx-based Ethernet interfaces device driver
+.Sh SYNOPSIS
+.Cd "sm0 at ifpga0 addr 0xb8000000 irq 27"
+.Cd "sm0 at isa? port 0x300 irq 10"
+.Cd "sm* at mhzc?"
+.Cd "sm* at pcmcia? function ?"
+.Cd "sm* at nubus?"
+.Sh DESCRIPTION
+The
+.Nm
+device driver supports SMC91C9x-based and SMC91C1xx-based Ethernet interfaces.
+.Pp
+The ifpga0 attachment of the
+.Nm
+driver supports SMC91C9x-based Ethernet interface on the ARM Integrator/CP
+board.
+.Pp
+The ISA attachment of the
+.Nm
+driver supports any SMC91C9x-based Ethernet interface on the ISA
+bus, including the EFA Info*Express SVC VLB interface, and the
+on-board SMC91C9x Ethernet found in many embedded PCs and laptop
+docking stations.
+.Pp
+The mhzc attachment of the
+.Nm
+driver supports the Megahertz combo Ethernet and modem card.
+.Pp
+The PCMCIA attachment of the
+.Nm
+driver supports Megahertz X-JACK Ethernet cards.
+.Pp
+The nubus attachment of the
+.Nm
+driver supports SMC-based Ethernet cards for the macintosh.
+.Sh MEDIA SELECTION
+The SMC91C1xx supports the MII interface and so the list of supported
+media depends on several factors, including which PHY is attached.
+The SMC91C9x supports AUI and UTP media types.
+.Pp
+To enable the AUI media, select the
+.Em 10base5
+or
+.Em aui
+media type with
+.Xr ifconfig 8 Ns 's
+.Cm media
+directive.
+To select UTP, select the
+.Em 10baseT
+or
+.Em utp
+media type.
+.Pp
+.Xr ifconfig 8 Ns 's
+.Fl m
+option will display the full list of supported
+.Cm media
+directives for a particular configuration.
+.Sh DIAGNOSTICS
+.Bl -diag
+.It "sm0: unable to read MAC address from CIS"
+This indicates that the Ethernet address, which is stored in the
+CIS information on the Megahertz X-JACK PCMCIA Ethernet card, is
+corrupted.
+.El
+.Sh SEE ALSO
+.Xr ifmedia 4 ,
+.Xr intro 4 ,
+.Xr isa 4 ,
+.Xr mhzc 4 ,
+.Xr mii 4 ,
+.Xr pcmcia 4 ,
+.Xr ifconfig 8