1.\" $NetBSD: gem.4,v 1.4 2005/06/23 12:47:38 peter Exp $ 2.\" 3.\" Copyright (c) 2002 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the NetBSD 17.\" Foundation, Inc. and its contributors. 18.\" 4. Neither the name of The NetBSD Foundation nor the names of its 19.\" contributors may be used to endorse or promote products derived 20.\" from this software without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32.\" POSSIBILITY OF SUCH DAMAGE. 33.\" 34.Dd February 20, 2005 35.Dt GEM 4 36.Os 37.Sh NAME 38.Nm gem 39.Nd ERI/GEM/GMAC Ethernet device driver 40.Sh SYNOPSIS 41.Cd "gem* at pci? dev ? function ?" 42.Pp 43Configuration of PHYs may also be necessary. 44See 45.Xr mii 4 . 46.Sh DESCRIPTION 47The 48.Nm 49driver provides support for the GMac Ethernet hardware found mostly in 50the last Apple PowerBooks G3s and most G4-based Apple hardware, as 51well as many Sun UltraSPARCs. 52.Pp 53Cards supported by this driver include: 54.Bl -bullet -compact -offset indent 55.It 56Sun GEM gigabit ethernet 57.It 58Sun ERI 10/100 59.It 60Apple GMAC 61.El 62.Pp 63The GEM family supports hardware checksumming to assist in computing 64IPv4 TCP/UDP checksums. 65The 66.Nm 67driver supports this feature of the chip. 68See 69.Xr ifconfig 8 70for information on how to enable this feature. 71.Sh SEE ALSO 72.Xr bm 4 , 73.Xr de 4 , 74.Xr hme 4 , 75.Xr mc 4 , 76.Xr mii 4 , 77.Xr tlp 4 78.Sh HISTORY 79The 80.Nm 81device driver appeared in 82.Nx 1.6 . 83.Sh AUTHORS 84.An -nosplit 85The 86.Nm 87driver was written by 88.An Eduardo Horvath 89.Aq eeh@NetBSD.org . 90The man page was written by 91.An Thomas Klausner 92.Aq wiz@NetBSD.org . 93