150 lines
4.2 KiB
Groff
150 lines
4.2 KiB
Groff
.\" $NetBSD: gem.4,v 1.2 2003/02/14 15:20:18 grant Exp $
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.\"
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.\" Copyright (c) 2002 The NetBSD Foundation, Inc.
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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
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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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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE 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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.\" $FreeBSD$
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.\"
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.Dd December 25, 2009
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.Dt GEM 4
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.Os
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.Sh NAME
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.Nm gem
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.Nd ERI/GEM/GMAC Ethernet device driver
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device miibus"
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.Cd "device gem"
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.Ed
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.Pp
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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if_gem_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for the GMAC Ethernet hardware found mostly in
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the last Apple PowerBooks G3s and most G4-based Apple hardware, as
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well as Sun UltraSPARC machines.
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.Pp
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All controllers supported by the
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.Nm
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driver have TCP checksum offload capability for both receive and transmit,
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support for the reception and transmission of extended frames for
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.Xr vlan 4
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and a 512-bit multicast hash filter.
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.Sh HARDWARE
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.Pp
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Chips supported by the
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.Nm
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driver include:
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.Pp
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.Bl -bullet -compact
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.It
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Apple GMAC
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.It
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Sun ERI 10/100 Mbps Ethernet
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.It
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Sun GEM Gigabit Ethernet
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.El
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.Pp
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The
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following add-on cards are known to work with the
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.Nm
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driver at this time:
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.Pp
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.Bl -bullet -compact
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.It
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Sun Gigabit Ethernet PCI 2.0/3.0 (GBE/P)
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(part no.\& 501-4373)
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.It
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Sun Gigabit Ethernet SBus 2.0/3.0 (GBE/S)
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(part no.\& 501-4375)
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.El
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.Sh NOTES
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On sparc64 the
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.Nm
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driver respects the
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.Va local-mac-address?
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system configuration variable which can be set in the Open Firmware boot
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monitor using the
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.Ic setenv
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command or by
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.Xr eeprom 8 .
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If set to
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.Dq Li false
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(the default), the
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.Nm
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driver will use the system's default MAC address for all of its devices.
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If set to
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.Dq Li true ,
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the unique MAC address of each interface is used if present rather than
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the system's default MAC address.
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.Pp
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Supported interfaces having their own MAC address include the on-board
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Sun ERI 10/100 Mbps on boards equipped with more than one Ethernet interface
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and the Sun Gigabit Ethernet 2.0/3.0 GBE add-on cards.
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.Sh SEE ALSO
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.Xr altq 4 ,
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.Xr miibus 4 ,
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.Xr netintro 4 ,
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.Xr vlan 4 ,
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.Xr eeprom 8 ,
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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 appeared in
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.Nx 1.6 .
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The first
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.Fx
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version to include it was
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.Fx 5.0 .
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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driver was written for
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.Nx
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by
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.An Eduardo Horvath
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.Aq eeh@NetBSD.org .
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It was ported to
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.Fx
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by
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.An Thomas Moestl
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.Aq tmm@FreeBSD.org
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and later on improved by
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.An Marius Strobl
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.Aq marius@FreeBSD.org .
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The man page was written by
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.An Thomas Klausner
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.Aq wiz@NetBSD.org .
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