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.\" Copyright (c) 1998-2001 Semen Ustimenko <semenu@FreeBSD.org>
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.\" $FreeBSD: head/share/man/man4/tx.4 213573 2010-10-08 12:40:16Z uqs $
.\"
.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.