1.\" Copyright (c) Berkeley Software Design, Inc. 2.\" Copyright (c) 1997, 1998, 1999, 2000 3.\" Bill Paul <wpaul@osd.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.\"
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32.\" $FreeBSD: head/share/man/man4/pcn.4 137881 2004-11-19 03:47:01Z obrien $
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32.\" $FreeBSD: head/share/man/man4/pcn.4 148145 2005-07-19 00:26:30Z trhodes $ |
33.\"
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34.Dd September 13, 2004
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34.Dd July 16, 2005 |
35.Dt PCN 4 36.Os 37.Sh NAME 38.Nm pcn 39.Nd "AMD PCnet/PCI Fast Ethernet device driver" 40.Sh SYNOPSIS
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41To compile support for the 42.Nm 43driver into your kernel, place the following lines in your kernel configuration file: 44.Bd -ragged -offset indent |
45.Cd "device miibus" 46.Cd "device pcn"
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47.Ed 48.Pp 49Alternatively, to load the 50.Nm 51driver at boot time, place the following line in 52.Xr loader.conf 5 : 53.Bd -literal -offset indent 54if_pcn_load="YES" 55.Ed |
56.Sh DESCRIPTION 57The 58.Nm 59driver provides support for PCI Ethernet adapters and embedded 60controllers based on the AMD PCnet/FAST, PCnet/FAST+, PCnet/FAST III, 61PCnet/PRO and PCnet/Home Ethernet controller chips. 62Supported NIC's include the Allied Telesyn AT-2700 familly. 63.Pp 64The PCnet/PCI chips include a 100Mbps Ethernet MAC and support 65both a serial and MII-compliant transceiver interface. 66They use a bus master DMA and a scatter/gather descriptor scheme. 67The AMD chips provide a mechanism for zero-copy receive, 68providing good performance in server environments. 69Receive address filtering is provided using a single perfect filter entry 70for the station address and a 64-bit multicast hash table. 71.Pp 72The 73.Nm 74driver supports the following media types: 75.Pp 76.Bl -tag -width 10baseTXUTP 77.It autoselect 78Enable autoselection of the media type and options. 79The user can manually override 80the autoselected mode by adding media options to 81.Xr rc.conf 5 . 82.It 10baseT/UTP 83Set 10Mbps operation. 84The 85.Xr ifconfig 8 86.Cm mediaopt 87option can also be used to select either 88.Sq full-duplex 89or 90.Sq half-duplex 91modes. 92.It 100baseTX 93Set 100Mbps (Fast Ethernet) operation. 94The 95.Xr ifconfig 8 96.Cm mediaopt 97option can also be used to select either 98.Sq full-duplex 99or 100.Sq half-duplex 101modes. 102.El 103.Pp 104The 105.Nm 106driver supports the following media options: 107.Pp 108.Bl -tag -width full-duplex 109.It full-duplex 110Force full duplex operation 111.It half-duplex 112Force half duplex operation. 113.El 114.Pp 115For more information on configuring this device, see 116.Xr ifconfig 8 . 117.Sh HARDWARE 118The 119.Nm 120driver supports adapters and embedded controllers based on the AMD PCnet/FAST, 121PCnet/FAST+, PCnet/FAST III, PCnet/PRO and PCnet/Home Fast Ethernet chips: 122.Pp 123.Bl -bullet -compact 124.It 125AMD Am53C974/Am79C970/Am79C974 PCnet-PCI 126.It 127AMD Am79C970A PCnet-PCI II 128.It 129AMD Am79C971 PCnet-FAST 130.It 131AMD Am79C972 PCnet-FAST+ 132.It 133AMD Am79C973/Am79C975 PCnet-FAST III 134.It 135AMD Am79C976 PCnet-PRO 136.It 137AMD PCnet/Home HomePNA 138.It 139Allied-Telesis LA-PCI 140.It 141Contec C-NET(98)S (PC-98) 142.It 143NEC SV-98/2-B05, B06 144.El 145.Sh DIAGNOSTICS 146.Bl -diag 147.It "pcn%d: couldn't map ports/memory" 148A fatal initialization error has occurred. 149.It "pcn%d: couldn't map interrupt" 150A fatal initialization error has occurred. 151.It "pcn%d: watchdog timeout" 152The device has stopped responding to the network, or there is a problem with 153the network connection (e.g.\& a cable fault). 154.It "pcn%d: no memory for rx list" 155The driver failed to allocate an mbuf for the receiver ring. 156.It "pcn%d: no memory for tx list" 157The driver failed to allocate an mbuf for the transmitter ring when 158allocating a pad buffer or collapsing an mbuf chain into a cluster. 159.It "pcn%d: chip is in D3 power state -- setting to D0" 160This message applies only to adapters which support power 161management. 162Some operating systems place the controller in low power 163mode when shutting down, and some PCI BIOSes fail to bring the chip 164out of this state before configuring it. 165The controller loses all of 166its PCI configuration in the D3 state, so if the BIOS does not set 167it back to full power mode in time, it will not be able to configure it 168correctly. 169The driver tries to detect this condition and bring 170the adapter back to the D0 (full power) state, but this may not be 171enough to return the driver to a fully operational condition. 172If 173you see this message at boot time and the driver fails to attach 174the device as a network interface, you will have to perform a 175warm boot to have the device properly configured. 176.Pp 177Note that this condition only occurs when warm booting from another 178operating system. 179If you power down your system prior to booting 180.Fx , 181the card should be configured correctly. 182.El 183.Sh SEE ALSO 184.Xr arp 4 , 185.Xr miibus 4 , 186.Xr netintro 4 , 187.Xr ng_ether 4 , 188.Xr ifconfig 8 189.Rs 190.%T AMD PCnet/FAST, PCnet/FAST+ and PCnet/Home datasheets 191.%O http://www.amd.com 192.Re 193.Sh HISTORY 194The 195.Nm 196device driver first appeared in 197.Fx 4.3 . 198.Sh AUTHORS 199The 200.Nm 201driver was written by 202.An Bill Paul Aq wpaul@osd.bsdi.com .
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