.\" $OpenBSD: nge.4,v 1.3 2001/07/06 06:14:31 angelos Exp $ .\" Copyright (c) 2001 Wind River Systems .\" Copyright (c) 1997, 1998, 1999, 2000, 2001 .\" Bill Paul . All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. All advertising materials mentioning features or use of this software .\" must display the following acknowledgement: .\" This product includes software developed by Bill Paul. .\" 4. Neither the name of the author nor the names of any co-contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD .\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR .\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF .\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS .\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN .\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF .\" THE POSSIBILITY OF SUCH DAMAGE. .\" .\" $FreeBSD: src/share/man/man4/nge.4,v 1.1 2001/05/11 19:56:34 wpaul Exp $ .\" .Dd July 11, 2001 .Dt NGE 4 .Os .Sh NAME .Nm nge .Nd "National Semiconductor PCI gigabit ethernet adapter driver" .Sh SYNOPSIS .Cd "device miibus" .Cd "device nge" .Sh DESCRIPTION The .Nm driver provides support for various NICs based on the National Semiconductor DP83820 and DP83821 gigabit ethernet controller chips, including the following: .Pp .Bl -bullet -compact .It SMC EZ Card 1000 (SMC9462TX) .It D-Link DGE-500T .It Asante FriendlyNet GigaNIX 1000TA and 1000TPC .It Addrton AEG320T .El .Pp All of these NICs are capable of 10, 100 and 1000mbps speeds over CAT5 copper cable. The DP83820 supports TBI (ten bit interface) and GMII transceivers, which means it can be used with either copper or 1000baseX fiber applications. The DP83820 supports .Xr ip 4 , .Xr tcp 4 , and .Xr udp 4 checksum offload and VLAN tagging/insertion as well as a 2048-bit multicast hash filter and up to 4 pattern match buffers. .Pp Most cards also use the DP83861 10/100/1000 copper gigabit tranceiver chip, which supports autonegotiation of 10, 100 and 1000mbps modes in full or half duplex. .Pp The DP83820 also supports jumbo frames, which can be configured via the interface MTU setting. Selecting an MTU larger than 1500 bytes with the .Xr ifconfig 8 utility configures the adapter to receive and transmit jumbo frames. Using jumbo frames can greatly improve performance for certain tanges, such as file transfers and data streaming. If the MTU is set to be larger than the NIC's transmit buffer (typically 8152 bytes), hardware output checksumming is disabled as the NIC cannot handle this case. .Pp The .Nm driver supports the following media types: .Bl -tag -width 10baseTXUTP .It Cm autoselect Enable autoselection of the media type and options. The user can manually override the autoselected mode by adding media options to .Xr rc.conf 5 . .It Cm 10baseT/UTP Set 10Mbps operation. The .Xr ifconfig 8 .Ic mediaopt option can also be used to select either .Cm full-duplex or .Cm half-duplex modes. .It Cm 100baseTX Set 100Mbps (fast ethernet) operation. The .Xr ifconfig 8 .Ic mediaopt option can also be used to select either .Cm full-duplex or .Cm half-duplex modes. .It Cm 1000baseTX Set 1000baseTX operation over twisted pair. .Cm full-duplex and .Cm half-duplex modes are supported. .It Cm 1000baseSX Set 1000Mbps (gigabit ethernet) operation. Both .Cm full-duplex and .Cm half-duplex modes are supported. .El .Pp The .Nm driver supports the following media options: .Bl -tag -width full-duplex .It Cm full-duplex Force full duplex operation. .It Cm half-duplex Force half duplex operation. .El .Pp The .Nm driver also supports one special link option for 1000baseTX cards: .Bl -tag -width link0 .It Cm link0 With 1000baseTX cards, establishing a link between two ports requires that one port be configured as a master and the other a slave. With autonegotiation, the master/slave settings will be chosen automatically. However when manually selecting the link state, it is necessary to force one side of the link to be a master and the other a slave. The .Nm driver configures the ports as slaves by default. Setting the .Cm link0 flag with .Xr ifconfig 8 will set a port as a master instead. .El .Pp For more information on configuring this device, see .Xr ifconfig 8 . .Sh DIAGNOSTICS .Bl -diag .It "nge%d: couldn't map memory" A fatal initialization error has occurred. .It "nge%d: couldn't map ports" A fatal initialization error has occurred. .It "nge%d: couldn't map interrupt" A fatal initialization error has occurred. .It "nge%d: no memory for softc struct!" The driver failed to allocate memory for per-device instance information during initialization. .It "nge%d: failed to enable memory mapping!" The driver failed to initialize PCI shared memory mapping. This might happen if the card is not in a bus-master slot. .It "nge%d: no memory for jumbo buffers!" The driver failed to allocate memory for jumbo frames during initialization. .It "nge%d: watchdog timeout" The device has stopped responding to the network, or there is a problem with the network connection (cable). .El .Sh SEE ALSO .Xr arp 4 , .Xr netintro 4 , .Xr ifconfig 8 .Rs .%T National Semiconductor DP83820 datasheet .%O http://www.national.com .Re .Rs .%T National Semiconductor DP83861 datasheet .%O http://www.national.com .Re .Sh HISTORY The .Nm device driver first appeared in .Ox 3.0 . .Sh AUTHORS The .Nm driver was written by .An Bill Paul Aq wpaul@bsdi.com .