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diff --git a/share/man/man4/le.4 b/share/man/man4/le.4 new file mode 100644 index 0000000..0a1823d --- /dev/null +++ b/share/man/man4/le.4 @@ -0,0 +1,476 @@ +.\" $NetBSD: le.4,v 1.22 2004/10/04 19:12:52 rumble Exp $ +.\" +.\"- +.\" Copyright (c) 1992, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This software was developed by the Computer Systems Engineering group +.\" at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and +.\" contributed to Berkeley. +.\" +.\" 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. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 THE REGENTS OR CONTRIBUTORS 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. +.\" +.\" from: Header: le.4,v 1.2 92/10/13 05:31:33 leres Exp +.\" from: @(#)le.4 8.1 (Berkeley) 6/9/93 +.\" $FreeBSD$ +.\" +.Dd January 20, 2007 +.Dt LE 4 +.Os +.Sh NAME +.Nm le +.Nd "AMD Am7900 LANCE and Am79C9xx ILACC/PCnet Ethernet interface driver" +.Sh SYNOPSIS +To compile this driver into the kernel, +place the following line in your +kernel configuration file: +.Bd -ragged -offset indent +.Cd "device le" +.Ed +.Pp +Alternatively, to load the driver as a +module at boot time, place the following line in +.Xr loader.conf 5 : +.Bd -literal -offset indent +if_le_load="YES" +.Ed +.Pp +For C-Bus non-PnP adapters, the port address and the IRQ number have to be +specified in +.Pa /boot/device.hints : +.Cd hint.le.0.at="isa" +.Cd hint.le.0.port="0x03d0" +.Cd hint.le.0.irq="6" +.Pp +For ISA non-PnP adapters, the port address as well as the IRQ and the DRQ +numbers have to be specified in +.Pa /boot/device.hints : +.Cd hint.le.0.at="isa" +.Cd hint.le.0.port="0x280" +.Cd hint.le.0.irq="10" +.Cd hint.le.0.drq="0" +.Sh DESCRIPTION +The +.Nm +driver provides support for Ethernet adapters based on the +.Tn AMD Am7990 +and +.Tn Am79C90 +.Pq CMOS, pin-compatible +Local Area Network Controller for Ethernet +.Pq Tn LANCE +chips. +.Pp +The +.Nm +driver also supports Ethernet adapters based on the +.Tn AMD Am79C900 +Integrated Local Area Communications Controller +.Pq Tn ILACC +as well as the +.Tn Am79C9xx PCnet +family of chips, which are single-chip implementations of a +.Tn LANCE +chip and a DMA engine. +This includes a superset of the +.Tn PCI +bus Ethernet chips supported by the +.Xr pcn 4 +driver. +The +.Nm +driver treats all of these +.Tn PCI +bus Ethernet chips as an +.Tn AMD Am79C970 PCnet-PCI +and does not support the additional features like the MII bus and burst mode of +.Tn AMD Am79C971 PCnet-FAST +and greater chips. +Thus the +.Xr pcn 4 +driver should be preferred for the latter. +.Pp +Generally, the +.Nm +driver aims at supporting as many different chips on as many different +platforms as possible, +partially at the cost of the best performance with some of these. +.Pp +The +.Nm +driver supports reception and transmission of extended frames for +.Xr vlan 4 . +Selective reception of multicast Ethernet frames is provided by a 64-bit mask; +multicast destination addresses are hashed to a bit entry using the Ethernet +CRC function. +.Sh HARDWARE +.Ss C-Bus and ISA +The +.Nm +driver supports +.Tn C-Bus +and +.Tn ISA +bus Ethernet adapters which are based on the following chips: +.Pp +.Bl -bullet -compact +.It +.Tn AMD Am7990 and Am79C90 LANCE +.It +.Tn AMD Am79C960 PCnet-ISA +.It +.Tn AMD Am79C961 PCnet-ISA+ +.It +.Tn AMD Am79C961A PCnet-ISA II +.El +.Pp +This includes support for the following Ethernet adapters: +.Pp +C-Bus non-PnP: +.Pp +.Bl -bullet -compact +.It +.Tn Contec C-NET(98)S +.El +.Pp +ISA non-PnP: +.Pp +.Bl -bullet -compact +.It +.Tn BICC Isolan +.\" .It +.\" .Tn Digital DEPCA +.It +.Tn Novell NE2100 +.El +.Pp +ISA PnP: +.Pp +.Bl -bullet -compact +.It +.Tn AMD AM1500T/AM2100 +.It +.Tn AMD PCnet-32 +.It +.Tn AMD PCnet-ISA +.It +.Tn Allied Telesyn AT-1500 +.It +.Tn Boca LANCard Combo +.It +.Tn Cabletron E2100 Series DNI +.It +.Tn Cabletron E2200 Single Chip +.It +.Tn Melco Inc. LGY-IV +.It +.Tn Novell NE2100 +.It +.Tn Racal InterLan EtherBlaster +.El +.Pp +The +.Nm +driver does not support the selection of media types and options via +.Xr ifconfig 8 +with +.Tn C-Bus +and +.Tn ISA +bus Ethernet adapters. +.\" .Ss EISA +.\" The +.\" .Tn EISA +.\" bus Ethernet cards supported by the +.\" .Nm +.\" driver are: +.\" .Pp +.\" .Bl -bullet -compact +.\" .It +.\" .Tn DEC DE422 +.\" .El +.\" .Ss MCA +.\" The +.\" .Tn MCA +.\" bus Ethernet cards supported by the +.\" .Nm +.\" driver are: +.\" .Pp +.\" .Bl -bullet -compact +.\" .It +.\" .Tn SKNET Personal MC2 +.\" .It +.\" .Tn SKNET MC2+ +.\" .El +.Ss PCI +The +.Tn PCI +bus Ethernet chips supported by the +.Nm +driver are: +.Pp +.Bl -bullet -compact +.It +.Tn AMD Am53C974/Am79C970/Am79C974 PCnet-PCI +.It +.Tn AMD Am79C970A PCnet-PCI II +.It +.Tn AMD Am79C971 PCnet-FAST +.It +.Tn AMD Am79C972 PCnet-FAST+ +.It +.Tn AMD Am79C973/Am79C975 PCnet-FAST III +.It +.Tn AMD Am79C976 PCnet-PRO +.It +.Tn AMD Am79C978 PCnet-Home +.El +.Pp +This includes support for the following Ethernet adapters: +.Pp +.Bl -bullet -compact +.It +.Tn AcerLAN NIC P20 +.It +.Tn Allied Telesyn AT-2450 and AT-2700 series +.It +.Tn VMware emulated AMD Am79C970A PCnet-PCI II interface +.El +.Pp +The +.Nm +driver supports the selection of the following media types via +.Xr ifconfig 8 +with +.Tn PCI +bus Ethernet adapters: +.Bl -tag -width ".Cm 10base5/AUI" +.It Cm autoselect +Enable autoselection of the media type. +.It Cm 10baseT/UTP +Select UTP media. +.It Cm 10base5/AUI +Select AUI/BNC media. +.El +.Pp +The following media option is supported with these media types: +.Bl -tag -width ".Cm full-duplex" +.It Cm full-duplex +Select full duplex operation. +.El +.Pp +Note that unlike the +.Xr pcn 4 +driver, the +.Nm +driver does not support selecting 100Mbps (Fast Ethernet) media types. +.Ss sparc64 +The +.Nm +driver supports the on-board +.Tn LANCE +interfaces found in +.Tn Sun Ultra 1 +machines. +The +.Nm +driver allows the selection of the following media types via +.Xr ifconfig 8 +with these on-board interfaces: +.Bl -tag -width ".Cm 10base5/AUI" +.It Cm autoselect +Enable autoselection of the media type. +.It Cm 10baseT/UTP +Select UTP media. +.It Cm 10base5/AUI +Select AUI media. +.El +.Pp +When using autoselection, a default media type is selected for use by +examining all ports for carrier. +The first media type with which a carrier is detected will be selected. +Additionally, if carrier is dropped on a port, the driver will switch +between the possible ports until one with carrier is found. +.Pp +The +.Nm +driver also supports the following +.Tn Sun SBus +Ethernet add-on adapters: +.Pp +.Bl -bullet -compact +.It +.Tn SCSI HBA and Buffered Ethernet +.Pq SBE/S, P/N 501-1869 +.It +.Tn Fast SCSI and Buffered Ethernet +.Pq FSBE/S, P/N 501-2015 and 501-2981 +.El +.Pp +The +.Nm +driver does not support the selection of media types and options via +.Xr ifconfig 8 +with +.Tn SBus +Ethernet add-on adapters. +.Pp +For further information on configuring media types and options, see +.Xr ifconfig 8 . +.Sh DIAGNOSTICS +.Bl -diag +.It "le%d: overflow" +More packets came in from the Ethernet than there was space in the +.Tn LANCE +receive buffers. +Packets were missed. +.It "le%d: receive buffer error" +The +.Tn LANCE +ran out of buffer space, packet dropped. +.It "le%d: lost carrier" +The Ethernet carrier disappeared during an attempt to transmit. +The +.Tn LANCE +will finish transmitting the current packet, +but will not automatically retry transmission if there is a collision. +.It "le%d: excessive collisions, tdr %d" +The Ethernet was extremely busy or jammed, +outbound packets were dropped after 16 attempts to retransmit. +.Pp +TDR +is the abbreviation of +.Qq Time Domain Reflectometry . +The optionally reported TDR value is an internal counter of the interval +between the start of a transmission and the occurrence of a collision. +This value can be used to determine the distance from the Ethernet tap to +the point on the Ethernet cable that is shorted or open (unterminated). +.It "le%d: dropping chained buffer" +A packet did not fit into a single receive buffer and was dropped. +Since the +.Nm +driver allocates buffers large enough to receive maximum sized Ethernet +packets, this means some other station on the LAN transmitted a packet +larger than allowed by the Ethernet standard. +.It "le%d: transmit buffer error" +The +.Tn LANCE +ran out of buffer space before finishing the transmission of a packet. +If this error occurs, the driver software has a bug. +.It "le%d: underflow" +The +.Tn LANCE +ran out of buffer space before finishing the transmission of a packet. +If this error occurs, the driver software has a bug. +.It "le%d: controller failed to initialize" +Driver failed to start the +.Tn LANCE . +This is potentially a hardware failure. +.It "le%d: memory error" +RAM failed to respond within the timeout when the +.Tn LANCE +wanted to read or write it. +This is potentially a hardware failure. +.It "le%d: receiver disabled" +The receiver of the +.Tn LANCE +was turned off due to an error. +.It "le%d: transmitter disabled" +The transmitter of the +.Tn LANCE +was turned off due to an error. +.El +.Sh SEE ALSO +.Xr altq 4 , +.Xr arp 4 , +.Xr intro 4 , +.Xr netintro 4 , +.Xr pcn 4 , +.Xr vlan 4 , +.Xr ifconfig 8 +.Sh HISTORY +The +.Nm +driver was ported from +.Nx +and first appeared in +.Fx 6.1 . +The +.Nx +version in turn was derived from the +.Nm +driver which first appeared in +.Bx 4.4 . +.Sh AUTHORS +The +.Nm +driver was ported by +.An "Marius Strobl" Aq marius@FreeBSD.org . +.\" .Sh BUGS +.\" The Am7990 Revision C chips have a bug which causes garbage to be inserted +.\" in front of the received packet occasionally. +.\" The work-around is to ignore packets with an invalid destination address +.\" (garbage will usually not match), by double-checking the destination +.\" address of every packet in the driver. +.\" This work-around can be enabled with the +.\" .Dv LANCE_REVC_BUG +.\" kernel option. +.\" .Pp +.\" When +.\" .Dv LANCE_REVC_BUG +.\" is enabled, the +.\" .Nm +.\" driver executes one or two calls to an inline Ethernet address comparison +.\" function for every received packet. +.\" On the +.\" .Tn MC68000 +.\" it is exactly eight instructions of 16 bits each. +.\" There is one comparison for each unicast packet, and two comparisons for +.\" each broadcast packet. +.\" .Pp +.\" In summary, the cost of the LANCE_REVC_BUG option is: +.\" .Bl -enum -compact +.\" .It +.\" loss of multicast support, and +.\" .It +.\" eight extra +.\" .Tn CPU +.\" instructions per received packet, sometimes sixteen, depending on both the +.\" processor, and the type of packet. +.\" .El +.\" .Pp +.\" All sun3 systems are presumed to have this bad revision of the Am7990, +.\" until proven otherwise. +.\" Alas, the only way to prove what revision of the chip is in a particular +.\" system is inspection of the date code on the chip package, +.\" to compare against a list of what chip revisions were fabricated between +.\" which dates. +.\" .Pp +.\" Alas, the Am7990 chip is so old that +.\" .Tn AMD +.\" has +.\" .Qq de-archived +.\" the production information about it; pending a search elsewhere, we do not +.\" know how to identify the revision C chip from the date codes. |
