.\"	$NetBSD: gsip.4,v 1.11 2008/04/30 13:10:54 martin Exp $
.\"
.\" Copyright (c) 2001, 2002 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Jason R. Thorpe.
.\"
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.\" modification, are permitted provided that the following conditions
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.Dd June 2, 2001
.Dt GSIP 4
.Os
.Sh NAME
.Nm gsip
.Nd National Semiconductor DP83820 Gigabit Ethernet driver
.Sh SYNOPSIS
.Cd "gsip* at pci? dev ? function ?"
.Pp
Configuration of PHYs may also be necessary.  See
.Xr mii 4 .
.Sh DESCRIPTION
The
.Nm
device driver supports Gigabit Ethernet interfaces based on the
National Semiconductor DP83820 Gigabit Ethernet chips.
.Pp
The National Semiconductor DP83820 is found on NetGear GA-622,
Asante FriendlyNet GigaNIX, D-Link DGE-500T, SMC 9452TX and 9462TX,
Accton EN1407-T, Planex GN-1000TE, ARK SOHO GA2000T and GA2500T,
and other low-cost Gigabit Ethernet
cards.  It uses an external PHY or an external 10-bit interface.
.Pp
The DP83820 supports VLAN tag insertion/removal in hardware.  The
.Nm
driver supports this feature of the chip.
.Pp
The DP83820 supports IPv4/TCP/UDP checksumming in hardware.  The
.Nm
driver supports this feature of the chip.  See
.Xr ifconfig 8
for information on how to enable this feature.
.Pp
The DP83820 chip is a close relative of the DP83815 10/100 Ethernet
chip, which is supported by the
.Xr sip 4
driver, hence the
.Nm
name.
.\" .Sh DIAGNOSTICS
.\" XXX too be done.
.Sh SEE ALSO
.Xr arp 4 ,
.Xr ifmedia 4 ,
.Xr mii 4 ,
.Xr netintro 4 ,
.Xr pci 4 ,
.Xr vlan 4 ,
.Xr ifconfig 8
.Sh HISTORY
The
.Nm
driver first appeared in
.Nx 1.6 .
.Sh AUTHORS
The
.Nm
driver was written by
.An Jason R. Thorpe
.Aq thorpej@NetBSD.org .
.Sh BUGS
The
.Nm
driver does not support the 10-bit interface, which is required in
order to support fiber-optic media.