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TL(4)			 BSD Kernel Interfaces Manual			 TL(4)

     tl	-- Texas Instruments ThunderLAN	ethernet device	driver

     device miibus
     device tl

     The tl driver provides support for	PCI ethernet adapters based on the
     Texas Instruments ThunderLAN ethernet controller chip.  This includes a
     large number of Compaq PCI-bus ethernet adapters as well as the inte-
     grated ethernet controllers built in to several models of Compaq Prosig-
     nia servers and Compaq Deskpro desktop machines.  This driver also	sup-
     ports the Olicom OC-2135/2138, OC-2325 and	OC-2326	10/100 TX UTP adapters
     and the Racore 8165 10/100baseTX and 8148 10baseT/100baseTX/100baseFX
     multi-personality cards.

     The ThunderLAN controller has a standard MII interface that supports up
     to	32 physical interface devices (PHYs). It also has a built-in 10baseT
     PHY hardwired at MII address 31, which may	be used	in some	10Mbps-only
     hardware configurations.  In 100Mbps configurations, a National Semicon-
     ductor DP83840A or	other MII-compliant PHY	may be attached	to the Thun-
     derLAN's MII bus.	If a DP83840A or equivalent is available, the Thunder-
     LAN chip can operate at either 100Mbps or 10Mbps in either	half-duplex or
     full-duplex modes.	 The ThunderLAN's built-in PHY and the DP83840A	also
     support autonegotiation.

     The tl driver supports the	following media	types:

     autoselect		   Enable autoselection	of the media type and options.
			   Note	that this option is only available on those
			   PHYs	that support autonegotiation.  Also, the PHY
			   will	not advertise those modes that have been expl-
			   citly disabled using	the following media options.

     10baseT/UTP	   Set 10Mbps operation

     100baseTX		   Set 100Mbps (fast ethernet) operation

     10base5/AUI	   Enable AUI/BNC interface (useful only with the
			   built-in PHY).

     The tl driver supports the	following media	options:

     full-duplex	   Force full duplex operation

     half-duplex	   Force half duplex operation.

     hw-loopback	   Enable hardware loopback mode.

     Note that the 100baseTX media type	is only	available if supported by the
     PHY.  For more information	on configuring this device, see	ifconfig(8).

     tl%d: couldn't map	memory	A fatal	initialization error has occurred.

     tl%d: couldn't map	interrupt  A fatal initialization error	has occurred.

     tl%d: device timeout  The device has stopped responding to	the network,
     or	there is a problem with	the network connection (cable).

     tl%d: no memory for rx list  The driver failed to allocate	an mbuf	for
     the receiver ring.

     tl%d: 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.

     arp(4), netintro(4), ng_ether(4), ifconfig(8)

     The tl device driver first	appeared in FreeBSD 2.2.

     The tl driver was written by Bill Paul <>.

BSD				  May 1, 1998				   BSD


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