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148 lines
4.5 KiB
Groff
148 lines
4.5 KiB
Groff
.\" Copyright (c) 2001 Intel Corporation
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.\" All rights reserved.
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.\" Redistribution and use in source and binary forms of the Software, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code of the Software may retain the above
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.\" copyright notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form of the Software may reproduce the
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.\" above copyright notice, this list of conditions and the following
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.\" disclaimer in the documentation and/or other materials provided with the
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.\" distribution.
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.\" 3. Neither the name of the Intel Corporation nor the names of its contributors
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.\" shall be used to endorse or promote products derived from this Software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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.\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE INTEL OR ITS CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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.\" CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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.\" USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.Dd October, 2001
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.Dt EM 4
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.Os FreeBSD
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.Sh NAME
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.Nm em
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.Nd
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Intel(R) PRO/1000 gigabit ethernet driver for the FreeBSD operating system
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.Sh SYNOPSIS
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.Cd "device em"
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for PCI gigabit ethernet adapters based on
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the Intel 82542, 82543 and 82544 ethernet controller chip.
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The driver supports Transmit/Receive checksum offload
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and jumbo frames only on 82543 and 82544-based adapters.
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For a list of supported adapters, see the README
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included with the driver.
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.Pp
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For questions related to hardware requirements,
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refer to the documentation supplied with your Intel PRO/1000 adapter.
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All hardware requirements listed apply to use with FreeBSD.
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.Pp
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Support for jumbo frames is provided via the interface MTU setting.
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Selecting an MTU larger than 1500 bytes with the
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.Xr ifconfig 8
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utility configures the adapter to receive and transmit jumbo frames.
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The maximum MTU size for jumbo frames is 9000.
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.Pp
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The
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.Nm
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driver supports the following media types:
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.Pp
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.Bl -tag -width xxxxxxxxxxxxxxxxxxxx
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.It autoselect
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Enables auto-negotiation for speed and duplex.
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.It 10baseT/UTP
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Sets 10Mbps operation.
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The
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.Ar mediaopt
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option can also be used to select either
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.Ar full-duplex
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or
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.Ar half-duplex
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modes.
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.It 100baseTX
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Sets 100Mbps operation.
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The
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.Ar mediaopt
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option can also be used to select either
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.Ar full-duplex
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or
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.Ar half-duplex
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modes.
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.It 1000baseSX
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Sets 1000Mbps operation.
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Only
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.Ar full-duplex
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mode is supported at this speed.
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.It 1000baseTX
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Sets 1000Mbps operation.
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Only
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.Ar full-duplex
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mode is supported at this speed.
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.El
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.Pp
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The
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.Nm
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driver supports the following media options:
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.Pp
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.Bl -tag -width xxxxxxxxxxxxxxxxxxxx
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.It full-duplex
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Forces full duplex operation
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.It half-duplex
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Forces half duplex operation.
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.El
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.Pp
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For more information on configuring this device, see
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.Xr ifconfig 8 .
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.Sh DIAGNOSTICS
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.Bl -diag
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.It "em%d: Unable to allocate bus resource: memory"
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A fatal initialization error has occurred.
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.It "em%d: Unable to allocate bus resource: interrupt"
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A fatal initialization error has occurred.
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.It "em%d: No memory for jumbo buffers!"
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The driver failed to allocate memory for jumbo frames during
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initialization.
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.It "em%d: watchdog timeout -- resetting"
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The device has stopped responding to the network, or there is a problem with
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the network connection (cable).
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.El
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.Sh SUPPORT
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For additional information regarding building and installation,
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see the README included with the driver. For general information and support,
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go to the Intel support Website at:
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.Ar http://support.intel.com.
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.Pp
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If an issue is identified with the released source code on the supported kernel
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with a supported adapter, email the specific information related to the
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issue to freebsdnic@mailbox.intel.com.
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.El
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.Sh SEE ALSO
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.Xr arp 4 ,
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.Xr netintro 4 ,
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.Xr vlan 4 ,
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.Xr ng_ether 4 ,
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.Xr ifconfig 8
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.Sh HISTORY
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The
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.Nm
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device driver first appeared in
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.Fx 4.4 .
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.Sh AUTHORS
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The
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.Nm
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driver was written by
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.An Intel Corporation Aq freebsdnic@mailbox.intel.com .
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