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

NAME
     tl -- Texas Instruments ThunderLAN 10/100 Ethernet device

SYNOPSIS
     tl* at pci?
     lxtphy* at mii?
     mlphy* at mii?
     nsphy* at mii?
     tlphy* at mii?

DESCRIPTION
     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 sup-
                  port autonegotiation.  Also, the PHY will not advertise
                  those modes that have been explicitly disabled using the
                  following media options.

     10baseT      Set 10Mbps operation.

     100baseTX    Set 100Mbps (Fast Ethernet) operation.

     10base5      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).

DIAGNOSTICS
     tl0: couldn't map memory  A fatal initialization error has occurred.

     tl0: couldn't map interrupt  A fatal initialization error has occurred.

     tl0: device timeout  The device has stopped responding to the network, or
     there is a problem with the network connection (cable).

     tl0: no memory for rx list  The driver failed to allocate an mbuf for the
     receiver ring.

     tl0: 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.

SEE ALSO
     arp(4), ifmedia(4), intro(4), lxtphy(4), mlphy(4), netintro(4), nsphy(4),
     pci(4), tlphy(4), hostname.if(5), ifconfig(8)

HISTORY
     The tl device driver first appeared in FreeBSD 2.2.  OpenBSD support
     first appeared in OpenBSD 2.4.

AUTHORS
     The tl driver was written by Bill Paul <wpaul@ctr.columbia.edu>.

BSD                              July 16, 2013                             BSD