1 .\" Copyright (c) 2001 Wind River Systems
2 .\" Copyright (c) 1997, 1998, 1999, 2000, 2001
3 .\" Bill Paul <wpaul@bsdi.com>. All rights reserved.
5 .\" Redistribution and use in source and binary forms, with or without
6 .\" modification, are permitted provided that the following conditions
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
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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
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20 .\" THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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39 .Nd "National Semiconductor PCI Gigabit Ethernet adapter driver"
41 To compile this driver into the kernel,
42 place the following lines in your
43 kernel configuration file:
44 .Bd -ragged -offset indent
49 Alternatively, to load the driver as a
50 module at boot time, place the following line in
52 .Bd -literal -offset indent
58 driver provides support for various NICs based on the National Semiconductor
59 DP83820 and DP83821 Gigabit Ethernet controller chips.
61 The DP83820 supports TBI (ten bit interface) and GMII
62 transceivers, which means it can be used with either copper or 1000baseX
64 The DP83820 supports TCP/IP checksum offload and
65 VLAN tagging/insertion as well as a 2048-bit multicast hash filter
66 and up to 4 pattern match buffers.
68 Most cards also use the DP83861 10/100/1000 copper gigabit transceiver
69 chip, which supports autonegotiation of 10, 100 and 1000Mbps modes in
72 The DP83820 and DP83821 also support jumbo frames, which can be
73 configured via the interface MTU setting.
74 Selecting an MTU larger than 1500 bytes with the
76 utility configures the adapter to receive and transmit jumbo frames.
77 Using jumbo frames can greatly improve performance for certain tasks,
78 such as file transfers and data streaming.
82 driver supports the following media types:
83 .Bl -tag -width 10baseTXUTP
85 Enable autoselection of the media type and options.
86 The user can manually override
87 the autoselected mode by adding media options to
94 option can also be used to select either
100 Set 100Mbps (Fast Ethernet) operation.
104 option can also be used to select either
110 Set 1000baseTX operation over twisted pair.
116 Set 1000Mbps (Gigabit Ethernet) operation.
126 driver supports the following media options:
127 .Bl -tag -width full-duplex
129 Force full duplex operation.
131 Force half duplex operation.
134 For more information on configuring this device, see
139 driver supports National Semiconductor DP83820 and DP83821 based
140 Gigabit Ethernet adapters including:
146 Ark PC SOHO-GA2500T (32-bit PCI) and SOHO-GA2000T (64-bit PCI)
148 Asante FriendlyNet GigaNIX 1000TA and 1000TPC
152 Linksys EG1032, revision 1
158 SMC EZ Card 1000 (SMC9462TX)
160 Surecom Technology EP-320G-TX
162 Trendware TEG-PCITX (32-bit PCI) and TEG-PCITX2 (64-bit PCI)
165 The following variables are available as both
170 .Bl -tag -width "xxxxxx"
171 .It Va dev.nge.%d.int_holdoff
172 Maximum amount of time to delay interrupt processing in units of
174 The accepted range is 0 to 255, the default is 1(100us).
175 Value 0 completely disables the interrupt moderation.
176 The interface has to be brought down and up again before a change
181 .It "nge%d: couldn't map memory"
182 A fatal initialization error has occurred.
183 .It "nge%d: couldn't map ports"
184 A fatal initialization error has occurred.
185 .It "nge%d: couldn't map interrupt"
186 A fatal initialization error has occurred.
187 .It "nge%d: no memory for softc struct!"
188 The driver failed to allocate memory for per-device instance information
189 during initialization.
190 .It "nge%d: failed to enable memory mapping!"
191 The driver failed to initialize PCI shared memory mapping.
193 happen if the card is not in a bus-master slot.
194 .It "nge%d: no memory for jumbo buffers!"
195 The driver failed to allocate memory for jumbo frames during
197 .It "nge%d: watchdog timeout"
198 The device has stopped responding to the network, or there is a problem with
199 the network connection (cable).
211 .%T National Semiconductor DP83820 datasheet
212 .%U http://www.national.com
215 .%T National Semiconductor DP83861 datasheet
216 .%U http://www.national.com
221 device driver first appeared in
226 driver was written by
227 .An Bill Paul Aq wpaul@bsdi.com .