160 lines
4.7 KiB
Groff
160 lines
4.7 KiB
Groff
.\" Copyright (c) 2001-2003, Intel Corporation
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions are met:
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.\"
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.\" 1. Redistributions of source code must retain the above copyright notice,
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.\" this list of conditions and the following disclaimer.
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.\"
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" 3. Neither the name of the Intel Corporation nor the names of its
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.\" contributors may be used to endorse or promote products derived from
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.\" this software 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 COPYRIGHT OWNER OR CONTRIBUTORS BE
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.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" * Other names and brands may be claimed as the property of others.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd July 26, 2002
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.Dt EM 4
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.Os
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.Sh NAME
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.Nm em
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.Nd "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 82540, 82542, 82543, 82544 and 82546 Ethernet controller chips.
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The driver supports Transmit/Receive checksum offload
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and Jumbo Frames only on 82540, 82543, 82544 and 82546-based adapters.
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For a list of supported adapters, see the
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.Pa 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
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.Fx .
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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 16114.
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.Pp
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This driver version supports VLANs.
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For information on enabling VLANs, see the
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.Pa README .
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The
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.Nm
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driver supports the following media types:
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.Bl -tag -width ".Cm 10baseT/UTP"
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.It Cm autoselect
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Enables auto-negotiation for speed and duplex.
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.It Cm 10baseT/UTP
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Sets 10Mbps operation.
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Use the
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.Cm mediaopt
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option to select
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.Cm full-duplex
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mode.
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.It Cm 100baseTX
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Sets 100Mbps operation.
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Use the
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.Cm mediaopt
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option to select
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.Cm full-duplex
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mode.
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.It Cm 1000baseSX
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Sets 1000Mbps operation.
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Only
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.Cm full-duplex
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mode is supported at this speed.
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.It Cm 1000baseTX
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Sets 1000Mbps operation.
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Only
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.Cm 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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.Bl -tag -width ".Cm full-duplex"
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.It Cm full-duplex
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Forces full-duplex operation
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.It Cm half-duplex
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Forces half-duplex operation.
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.El
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.Pp
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Only use
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.Cm mediaopt
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to set the driver to
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.Cm full-duplex .
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If
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.Cm mediaopt
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is not specified, the driver defaults to
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.Cm half-duplex .
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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: 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
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.Pa README
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included with the driver.
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For general information and support,
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go to the Intel support website at:
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.Pa 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
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.Aq freebsdnic@mailbox.intel.com .
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.Sh SEE ALSO
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.Xr arp 4 ,
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.Xr gx 4 ,
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.Xr netintro 4 ,
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.Xr ng_ether 4 ,
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.Xr vlan 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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