1.\" Copyright (c) 2001 Wind River Systems 2.\" Copyright (c) 1997, 1998, 1999, 2000, 2001 3.\" Bill Paul <wpaul@bsdi.com>. All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 3. All advertising materials mentioning features or use of this software 14.\" must display the following acknowledgement: 15.\" This product includes software developed by Bill Paul. 16.\" 4. Neither the name of the author nor the names of any co-contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 24.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30.\" THE POSSIBILITY OF SUCH DAMAGE. 31.\" 32.\" $FreeBSD$ 33.\" 34.Dd May 11, 2001 35.Dt NGE 4 36.Os 37.Sh NAME 38.Nm nge 39.Nd "National Semiconductor PCI gigabit ethernet adapter driver" 40.Sh SYNOPSIS 41.Cd "device miibus" 42.Cd "device nge" 43.Sh DESCRIPTION 44The 45.Nm 46driver provides support for various NICs based on the National Semiconductor 47DP83820 and DP83821 gigabit ethernet controller chips, including the 48following: 49.Pp 50.Bl -bullet -compact 51.It 52SMC EZ Card 1000 (SMC9462TX) 53.It 54D-Link DGE-500T 55.It 56Asante FriendlyNet GigaNIX 1000TA and 1000TPC 57.It 58Addtron AEG320T 59.It 60LinkSys EG1032 (32-bit PCI) and EG1064 (64-bit PCI) 61.It 62Surecom Technology EP-320G-TX 63.It 64Netgear GA622T 65.El 66.Pp 67All of these NICs are capable of 10, 100 and 1000mbps speeds over CAT5 68copper cable. 69The DP83820 supports TBI (ten bit interface) and GMII 70transceivers, which means it can be used with either copper of 1000baseX 71fiber applications. 72The DP83820 supports TCP/IP checksum offload and 73VLAN tagging/insertion as well as a 2048-bit multicast hash filter 74and up to 4 pattern match buffers. 75.Pp 76Most cards also use the DP83861 10/100/1000 copper gigabit tranceiver 77chip, which supports autonegotiation of 10, 100 and 1000mbps modes in 78full or half duplex. 79.Pp 80The DP83820 also supports jumbo frames, which can be configured 81via the interface MTU setting. 82Selecting an MTU larger than 1500 bytes with the 83.Xr ifconfig 8 84utility configures the adapter to receive and transmit jumbo frames. 85Using jumbo frames can greatly improve performance for certain tasks, 86such as file transfers and data streaming. 87.Pp 88The 89.Nm 90driver supports the following media types: 91.Bl -tag -width 10baseTXUTP 92.It Cm autoselect 93Enable autoselection of the media type and options. 94The user can manually override 95the autoselected mode by adding media options to 96.Xr rc.conf 5 . 97.It Cm 10baseT/UTP 98Set 10Mbps operation. 99The 100.Xr ifconfig 8 101.Ic mediaopt 102option can also be used to select either 103.Cm full-duplex 104or 105.Cm half-duplex 106modes. 107.It Cm 100baseTX 108Set 100Mbps (fast ethernet) operation. 109The 110.Xr ifconfig 8 111.Ic mediaopt 112option can also be used to select either 113.Cm full-duplex 114or 115.Cm half-duplex 116modes. 117.It Cm 1000baseTX 118Set 1000baseTX operation over twisted pair. 119.Cm full-duplex 120and 121.Cm half-duplex 122modes are supported. 123.It Cm 1000baseSX 124Set 1000Mbps (gigabit ethernet) operation. 125Both 126.Cm full-duplex 127and 128.Cm half-duplex 129modes are supported. 130.El 131.Pp 132The 133.Nm 134driver supports the following media options: 135.Bl -tag -width full-duplex 136.It Cm full-duplex 137Force full duplex operation. 138.It Cm half-duplex 139Force half duplex operation. 140.El 141.Pp 142The 143.Nm 144driver also supports one special link option for 1000baseTX cards: 145.Bl -tag -width link0 146.It Cm link0 147With 1000baseTX cards, establishing a link between two ports requires 148that one port be configured as a master and the other a slave. 149With autonegotiation, 150the master/slave settings will be chosen automatically. 151However when manually selecting the link state, it is necessary to 152force one side of the link to be a master and the other a slave. 153The 154.Nm 155driver configures the ports as slaves by default. 156Setting the 157.Cm link0 158flag with 159.Xr ifconfig 8 160will set a port as a master instead. 161.El 162.Pp 163For more information on configuring this device, see 164.Xr ifconfig 8 . 165.Sh DIAGNOSTICS 166.Bl -diag 167.It "nge%d: couldn't map memory" 168A fatal initialization error has occurred. 169.It "nge%d: couldn't map ports" 170A fatal initialization error has occurred. 171.It "nge%d: couldn't map interrupt" 172A fatal initialization error has occurred. 173.It "nge%d: no memory for softc struct!" 174The driver failed to allocate memory for per-device instance information 175during initialization. 176.It "nge%d: failed to enable memory mapping!" 177The driver failed to initialize PCI shared memory mapping. 178This might 179happen if the card is not in a bus-master slot. 180.It "nge%d: no memory for jumbo buffers!" 181The driver failed to allocate memory for jumbo frames during 182initialization. 183.It "nge%d: watchdog timeout" 184The device has stopped responding to the network, or there is a problem with 185the network connection (cable). 186.El 187.Sh SEE ALSO 188.Xr arp 4 , 189.Xr netintro 4 , 190.Xr ng_ether 4 , 191.Xr vlan 4 , 192.Xr ifconfig 8 193.Rs 194.%T National Semiconductor DP83820 datasheet 195.%O http://www.national.com 196.Re 197.Rs 198.%T National Semiconductor DP83861 datasheet 199.%O http://www.national.com 200.Re 201.Sh HISTORY 202The 203.Nm 204device driver first appeared in 205.Fx 4.4 . 206.Sh AUTHORS 207The 208.Nm 209driver was written by 210.An Bill Paul Aq wpaul@bsdi.com . 211