.\"     $OpenBSD: tx.4,v 1.9 2001/10/05 14:45:53 mpech 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:
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.\"    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 Jason L. Wright
.\" 4. The name of the author may not be used to endorse or promote products
.\"    derived from this software without specific prior written permission.
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.\"
.Dd September 21, 1998
.Dt TX 4
.Os
.Sh NAME
.Nm tx
.Nd SMC 9432 10/100 Mbps Ethernet driver
.Sh SYNOPSIS
.Cd "tx* at pci? dev ? function ?"
.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 xxxxxxxxxxxxxx -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 DIAGNOSTICS
.Bl -diag
.It "tx%d: device timeout %d packets"
The device stopped 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: WARNING! no link established"
No media connected.
Displayed at startup only.
.It "tx%d: cannot allocate mbuf header/cluster"
Failed to allocate memory for a received packet.
Packet was dropped.
.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 ifmedia 4 ,
.Xr inet 4 ,
.Xr intro 4 ,
.Xr ifconfig 8
.Sh BUGS
Multicast packet filtering is not supported.
.Sh HISTORY
.Ox
support for the
.Nm
first appeared in
.Ox 2.4 .