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TX(4)			     Kernel Interfaces Manual			   TX(4)

NAME
     tx -- SMC 83c17x Fast Ethernet device driver

SYNOPSIS
     To compile this driver into the kernel, place the following lines in your
     kernel configuration file:

	   device miibus
	   device tx

     Alternatively, to load the driver as a module at boot time, place the
     following line in loader.conf(5):

	   if_tx_load="YES"

DESCRIPTION
     The  tx  driver provides support for the Ethernet adapters based on the SMC
     83c17x (EPIC) chips.  These are mostly SMC 9432 series cards.

     The tx driver supports the following media types (depending on card's capa-
     bilities):

     autoselect   Enable autonegotiation (default).

     100baseFX	  Set 100Mbps (Fast Ethernet) fiber optic operation.

     100baseTX	  Set 100Mbps (Fast Ethernet) twisted pair operation.

     10baseT/UTP  Set 10Mbps on 10baseT port.

     10base2/BNC  Set 10Mbps on 10base2 port.

     The tx driver supports the following media options:

     full-duplex  Set full-duplex operation.

     The tx driver supports oversized Ethernet packets (up to 1600 bytes).   Re-
     fer to the ifconfig(8) man page on setting the interface's MTU.

     The old "ifconfig tx0 linkN" method of configuration is not supported.

   VLAN (IEEE 802.1Q) support
     The  tx driver supports the VLAN operation (using vlan(4) interfaces) with-
     out decreasing the MTU on the vlan(4) interfaces.

DIAGNOSTICS
     tx%d: device timeout %d packets  The device stops responding.   Device  and
     driver reset follows this error.

     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.

     tx%d:  cannot  allocate mbuf header/cluster  Cannot allocate memory for re-
     ceived packet.  Packet thrown away.

     tx%d: can't stop %s DMA  While resetting, the driver failed to stop the de-
     vice correctly.

SEE ALSO
     arp(4), miibus(4), netintro(4), ng_ether(4), ifconfig(8)

BUGS
     The auto-negotiation does not work very well.

FreeBSD 8.0			  July 16, 2005 			   TX(4)
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