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+.\"
+.\" Copyright (c) 1998-2001 Semen Ustimenko <semenu@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 DEVELOPERS ``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 DEVELOPERS 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.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd July 16, 2005
+.Dt TX 4
+.Os
+.Sh NAME
+.Nm tx
+.Nd "SMC 83c17x Fast Ethernet device driver"
+.Sh SYNOPSIS
+To compile this driver into the kernel,
+place the following lines in your
+kernel configuration file:
+.Bd -ragged -offset indent
+.Cd "device miibus"
+.Cd "device tx"
+.Ed
+.Pp
+Alternatively, to load the driver as a
+module at boot time, place the following line in
+.Xr loader.conf 5 :
+.Bd -literal -offset indent
+if_tx_load="YES"
+.Ed
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for the Ethernet adapters based on the
+SMC 83c17x (EPIC) chips.
+These are mostly SMC 9432 series cards.
+.Pp
+The
+.Nm
+driver supports the following media types (depending on card's capabilities):
+.Bl -tag -width ".Cm 10baseT/UTP"
+.It Cm autoselect
+Enable autonegotiation (default).
+.It Cm 100baseFX
+Set 100Mbps (Fast Ethernet) fiber optic operation.
+.It Cm 100baseTX
+Set 100Mbps (Fast Ethernet) twisted pair operation.
+.It Cm 10baseT/UTP
+Set 10Mbps on 10baseT port.
+.It Cm 10base2/BNC
+Set 10Mbps on 10base2 port.
+.El
+.Pp
+The
+.Nm
+driver supports the following media options:
+.Bl -tag -width ".Cm full-duplex"
+.It Cm full-duplex
+Set full-duplex operation.
+.El
+.Pp
+The
+.Nm
+driver supports oversized Ethernet packets (up to 1600 bytes).
+Refer to the
+.Xr ifconfig 8
+man page on setting the interface's MTU.
+.Pp
+The old
+.Dq Li "ifconfig tx0 linkN"
+method of configuration is not supported.
+.Ss "VLAN (IEEE 802.1Q) support"
+The
+.Nm
+driver supports the VLAN operation (using
+.Xr vlan 4
+interfaces) without decreasing the MTU on the
+.Xr vlan 4
+interfaces.
+.Sh DIAGNOSTICS
+.Bl -diag
+.It "tx%d: device timeout %d packets"
+The device stops responding.
+Device and driver reset follows this error.
+.It "tx%d: PCI fatal error occurred (%s)"
+One of following errors occurred: PCI Target Abort, PCI Master Abort, Data
+Parity Error or Address Parity Error.
+Device and driver reset follows this error.
+.It "tx%d: cannot allocate mbuf header/cluster"
+Cannot allocate memory for received packet.
+Packet thrown away.
+.It "tx%d: can't stop %s DMA"
+While resetting, the driver failed to stop the device correctly.
+.El
+.Sh SEE ALSO
+.Xr arp 4 ,
+.Xr miibus 4 ,
+.Xr netintro 4 ,
+.Xr ng_ether 4 ,
+.Xr ifconfig 8
+.Sh BUGS
+The auto-negotiation does not work very well.