NAME    [Toc]    [Back]

     tl - Texas Instruments ThunderLAN Ethernet driver

SYNOPSIS    [Toc]    [Back]

     tl* at pci? dev ? function ?

DESCRIPTION    [Toc]    [Back]

     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 integrated
 Ethernet controllers built in to several models of Compaq
Prosignia
     servers and Compaq Deskpro desktop  machines.   This  driver
also supports
     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 multipersonality
 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 Semiconductor
  DP83840A  or other MII-compliant PHY may be attached
to the ThunderLAN's
 MII bus.  If a DP83840A or equivalent is available,
the ThunderLAN
  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 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    [Toc]    [Back]

     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.

SEE ALSO    [Toc]    [Back]

     arp(4), ifmedia(4),  intro(4),  netintro(4),  pci(4),  hostname.if(5),
     ifconfig(8)

HISTORY    [Toc]    [Back]

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

AUTHORS    [Toc]    [Back]

     The    tl    driver    was    written    by    Bill     Paul
<[email protected]>.

OpenBSD      3.6                            May      1,      1998