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+.\"	$OpenBSD: ste.4,v 1.27 2022/02/17 12:24:08 jsg Exp $
+.\"
+.\" Copyright (c) 1997, 1998, 1999
+.\"	Bill Paul <wpaul@ctr.columbia.edu>. 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.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by Bill Paul.
+.\" 4. Neither the name of the author nor the names of any co-contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"   without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
+.\" 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.
+.\"
+.\" $FreeBSD: src/share/man/man4/ste.4,v 1.3 1999/11/15 23:14:27 phantom Exp $
+.\"
+.Dd $Mdocdate: February 17 2022 $
+.Dt STE 4
+.Os
+.Sh NAME
+.Nm ste
+.Nd Sundance Technologies ST201 10/100 Ethernet device
+.Sh SYNOPSIS
+.Cd "ste* at pci?"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for PCI Ethernet adapters and embedded
+controllers based on the Sundance Technologies ST201 PCI Fast
+Ethernet controller chip.
+This includes:
+.Pp
+.Bl -bullet -offset indent -compact
+.It
+D-Link DFE-550TX
+.It
+D-Link DFE-580TX
+.It
+Encore ENL832-TX-ICNT 10/100 M PCI
+.El
+.Pp
+The Sundance ST201 uses bus master DMA and is designed to be a
+3Com EtherLink XL work-alike.
+It uses the same DMA descriptor structure and is very similar in operation,
+however its register layout is different.
+The ST201 has a 64-bit multicast hash filter and a single perfect filter
+entry for the station address.
+It supports both 10 and 100Mbps speeds in either full or half duplex
+using an MII transceiver.
+.Pp
+The
+.Nm
+driver supports the following media types:
+.Bl -tag -width full-duplex
+.It autoselect
+Enable autoselection of the media type and options.
+The user can manually override
+the autoselected mode by adding media options to the
+.Xr hostname.if 5
+file.
+.It 10baseT
+Set 10Mbps operation.
+The
+.Ar mediaopt
+option can also be used to select either
+.Ar full-duplex
+or
+.Ar half-duplex
+modes.
+.It 100baseTX
+Set 100Mbps (Fast Ethernet) operation.
+The
+.Ar mediaopt
+option can also be used to select either
+.Ar full-duplex
+or
+.Ar half-duplex
+modes.
+.El
+.Pp
+The
+.Nm
+driver supports the following media options:
+.Bl -tag -width full-duplex
+.It full-duplex
+Force full duplex operation.
+.It half-duplex
+Force half duplex operation.
+.El
+.Pp
+For more information on configuring this device, see
+.Xr ifconfig 8 .
+.Sh DIAGNOSTICS
+.Bl -diag
+.It "ste0: couldn't map ports/memory"
+A fatal initialization error has occurred.
+.It "ste0: couldn't map interrupt"
+A fatal initialization error has occurred.
+.It "ste0: watchdog timeout"
+The device has stopped responding to the network, or there is a problem with
+the network connection (cable).
+.It "ste0: no memory for rx list"
+The driver failed to allocate an mbuf for the receiver ring.
+.It "ste0: no memory for tx list"
+The driver failed to allocate an mbuf for the transmitter ring when
+allocating a pad buffer or collapsing an mbuf chain into a cluster.
+.El
+.Sh SEE ALSO
+.Xr arp 4 ,
+.Xr ifmedia 4 ,
+.Xr intro 4 ,
+.Xr netintro 4 ,
+.Xr pci 4 ,
+.Xr hostname.if 5 ,
+.Xr ifconfig 8
+.Rs
+.%T Sundance ST201 data sheet
+.Re
+.Sh HISTORY
+The
+.Nm
+device driver first appeared in
+.Fx 3.0 .
+.Ox
+support was added in
+.Ox 2.7 .
+.Sh AUTHORS
+.An -nosplit
+The
+.Nm
+driver was written by
+.An Bill Paul Aq Mt wpaul@ee.columbia.edu
+and ported to
+.Ox
+by
+.An Aaron Campbell Aq Mt aaron@openbsd.org .