175 lines
5.5 KiB
Groff
175 lines
5.5 KiB
Groff
.\" Copyright (c) 2001
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.\" Jonathan Lemon <jlemon@freebsd.org>. 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
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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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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.\" 3. Neither the name of the author nor the names of any co-contributors
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.\" may 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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" 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 AUTHOR OR 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
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd Oct 17, 2001
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.Dt GX 4
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.Os
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.Sh NAME
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.Nm gx
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.Nd "Intel Pro/1000 gigabit ethernet driver"
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.Sh SYNOPSIS
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.Cd "device miibus"
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.Cd "device gx"
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for NICs based on the Intel 82542 and 82543
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gigabit ethernet controller chips. Both fiber and copper variants of
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the cards are supported.
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.Pp
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The 82542 supports TBI (ten bit interface), while the 82543 supports the
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GMII transceivers, which means it can be used with either copper or
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1000baseX fiber applications.
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Both boards support VLAN tagging/insertion and the 82543 additionally
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supports TCP/IP checksum offload.
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.Pp
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The 82543-T cards use the Marvell 10/100/1000 copper gigabit tranceiver
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chip, which supports autonegotiation of 10, 100 and 1000mbps modes in
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full or half duplex, however half duplex 1000mbps is not suppoorted.
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.Pp
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The driver also supports jumbo frames, which can be configured
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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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Using jumbo frames can greatly improve performance for certain tasks,
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such as file transfers and data streaming.
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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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.Bl -tag -width 10baseTXUTP
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.It Cm autoselect
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Enable autoselection of the media type and options.
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The user can manually override
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the autoselected mode by adding media options to
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.Xr rc.conf 5 .
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.It Cm 10baseT/UTP
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Set 10Mbps operation.
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The
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.Xr ifconfig 8
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.Ic mediaopt
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option can also be used to select either
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.Cm full-duplex
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or
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.Cm half-duplex
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modes.
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.It Cm 100baseTX
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Set 100Mbps (fast ethernet) operation.
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The
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.Xr ifconfig 8
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.Ic mediaopt
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option can also be used to select either
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.Cm full-duplex
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or
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.Cm half-duplex
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modes.
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.It Cm 1000baseTX
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Set 1000baseTX operation over twisted pair.
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Only
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.Cm full-duplex
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mode is supported.
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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 full-duplex
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.It Cm full-duplex
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Force full duplex operation.
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.It Cm half-duplex
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Force half duplex operation.
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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 also supports one special link option for 1000baseTX cards:
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.Bl -tag -width link0
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.It Cm link0
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With 1000baseTX cards, establishing a link between two ports requires
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that one port be configured as a master and the other a slave.
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With autonegotiation,
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the master/slave settings should be chosen automatically.
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Setting the
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.Cm link0
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flag with
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.Xr ifconfig 8
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will force the link up instead.
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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 "gx%d: couldn't map memory"
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A fatal initialization error has occurred.
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.It "gx%d: couldn't map interrupt"
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A fatal initialization error has occurred.
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.It "gx%d: couldn't setup irq"
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A fatal initialization error has occurred.
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.It "gx%d: failed to read station address"
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A fatal initialization error has occurred.
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.It "gx%d: no memory for list buffers!"
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The driver failed to allocate memory for per-device instance information
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during initialization.
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.It "gx%d: failed to enable memory mapping!"
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The driver failed to initialize PCI shared memory mapping.
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This might happen if the card is not in a bus-master slot.
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.It "gx%d: GMII/MII, PHY not detected"
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The MII probe routines failed to detect the PHY.
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This might happen if miibus is not configured.
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.It "gx%d: watchdog timeout"
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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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.It "gx%d: mbuf allocation failed -- packet dropped"
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The driver could not allocate a mbuf for the receive ring.
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.It "gx%d: cluster allocation failed -- packet dropped"
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The driver could not allocate a mbuf cluster for the receive ring.
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.It "gx%d: link down"
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The link status changed from up to down.
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.It "gx%d: link up"
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The link status changed from down to up.
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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 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 4.5 .
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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 Jonathan Lemon Aq jlemon@freebsd.org .
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