EM(4)                     OpenBSD Programmer's Manual                    EM(4)

NAME
     em - Intel(R) PRO/1000 gigabit Ethernet driver

SYNOPSIS
     em* at pci? dev ? function ?

DESCRIPTION
     The em driver provides support for PCI gigabit Ethernet adapters based on
     the Intel 82540, 82541, 82542, 82543, 82544, 82545, 82546 and 82547 Eth-
     ernet controller chips.  This includes the following models:

           Intel PRO/1000 Gigabit Server Adapter (SX Fiber) (PWLA8490)
           Intel PRO/1000F Gigabit Server Adapter (SX Fiber) (PWLA8490SX)
           Intel PRO/1000T Server Adapter (PWLA8490T)
           Intel PRO/1000XT Server Adapter (PWLA8490XT)
           Intel PRO/1000XS Server Adapter (SX Fiber) (PWLA8490XF)
           Intel PRO/1000T Desktop Adapter (PWLA8390T)
           Intel PRO/1000XTL Lo Profile PCI Server (PWLA8490XTL)
           Intel PRO/1000MT Desktop Adapter (PWLA8390MT)
           Intel PRO/1000MT Server Adapter (PWLA8490MT)
           Intel PRO/1000MT Dual Port Server Adapter (PWLA8492MT)
           Intel PRO/1000MF Server Adapter (SX Fiber) (PWLA8490MF)
           Intel PRO/1000MF Dual Port Server Adapter (SX Fiber) (PWLA8492MF)
           Intel PRO/1000MF Server Adapter (LX Fiber) (PWLA8490LX)
           Intel PRO/1000MT Quad PCI-X Adapter (PWLA8494MT)

     The em driver supports the following media types:

           autoselect  Enables auto-negotiation for speed and duplex.

           10baseT mediaopt full-duplex
                       Sets 10Mbps operation.

           100baseTX mediaopt full-duplex
                       Sets 100Mbps operation.

           1000baseSX  Sets 1000Mbps operation.  Only full-duplex mode is sup-
                       ported at this speed.

           1000baseT   Sets 1000Mbps operation.  Only full-duplex mode is sup-
                       ported at this speed.

     For more information on configuring this device, see ifconfig(8).

DIAGNOSTICS
     em%d: Unable to allocate bus resource: memory  A fatal initialization er-
     ror has occurred.

     em%d: Unable to allocate bus resource: interrupt  A fatal initialization
     error has occurred.

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

SUPPORT
     For general information and support, go to the Intel support website at:
     http://support.intel.com.

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

HISTORY
     The em device driver first appeared in OpenBSD 3.2.

AUTHORS
     The em driver was written by Intel Corporation
     <freebsdnic@mailbox.intel.com>.

OpenBSD 3.5                      March 1, 2002                               2
