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diff --git a/share/man/man4/cm.4 b/share/man/man4/cm.4 new file mode 100644 index 000000000000..bbeee52f9532 --- /dev/null +++ b/share/man/man4/cm.4 @@ -0,0 +1,173 @@ +.\" +.\" Copyright (c) 2004 Tom Rhodes +.\" 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. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. +.\" +.\" $FreeBSD$ +.\" +.Dd July 16, 2005 +.Dt CM 4 +.Os +.Sh NAME +.Nm cm +.Nd "SMC Arcnet Ethernet device driver" +.Sh SYNOPSIS +To compile this driver into the kernel, +place the following lines in your kernel +configuration file: +.Bd -ragged -offset indent +.Cd "device isa" +.Cd "device cm" +.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_cm_load="YES" +.Ed +.Sh DESCRIPTION +The +.Nm +driver provides support for the +.Tn Arcnet +.Tn ISA +network adapters. +.Pp +This driver also has quirks preset in the +.Xr device.hints 5 +file for card detection. +.Sh HARDWARE +The +.Nm +driver supports the following +card models: +.Pp +.Bl -bullet -compact +.It +SMC90c26 +.It +SMC90c56 +.It +SMC90c66 in '56 compatibility mode. +.El +.Sh IMPLEMENTATION NOTES +When the +.Va NOARP +flag is set on the +.Nm +interface, +it does not employ the address resolution protocol described in +.Xr arp 4 +to dynamically map between Internet and Ethernet addresses on +the local network. +Instead it uses the least significant 8 bits of the +.Tn IP +address as the hardware address +like described in +.Tn RFC +1051 +and +.Tn RFC +1201. +.Pp +With the +.Dv IFF_LINK0 +flag cleared +.Tn IP/ARP/RARP +encoding is done according to +.Tn RFC +1201 +that is, with Packet Header Definition Standard header and packet type +212 / 213. +The +.Tn MTU +is normally 1500. +The +.Dv IFF_LINK0 +flag is cleared by default. +.Pp +With the +.Dv IFF_LINK0 +flag set, +.Tn IP +and +.Tn ARP +encoding is done according to the deprecated +.Tn RFC +1051 encoding, that is with simple header, packet type 240 / 241, +and the +.Tn MTU +is 507. +.Pp +When switching between the two modes, use +.Dl ifconfig interfacename down up +to switch the +.Tn MTU . +.Sh DIAGNOSTICS +The following driver specific error messages +may be reported: +.Bl -diag +.It "reset: card reset, link addr = 0x%02x (cm%d)" +The card is being reset and a new link address assigned. +.It "srint: restarted rx on buf cm%d" +The rx buffer has been emptied and will be reset. +.El +.Sh SEE ALSO +.Xr netintro 4 , +.Xr watchdog 4 , +.Xr device.hints 5 , +.Xr ifconfig 8 , +.Xr watchdog 8 +.Sh HISTORY +The +.Nm +device was ported from +.Nx +by +.An Max Khon Aq fjoe@FreeBSD.org +and first appeared in +.Fx 4.6 . +This manual page first appeared in +.Fx 5.3 . +.Sh AUTHORS +This manual page was written by +.An Tom Rhodes Aq trhodes@FreeBSD.org . +The +.Sx IMPLEMENTATION NOTES +section was submitted by +.An Max Khon Aq fjoe@FreeBSD.org +and originated from +.Nx . +.Sh BUGS +The +.Nm +driver code could do with a bit of improvement, +it would be nice if some one could come along and take care of this. +.Pp +The +.Sx IMPLEMENTATION NOTES +section is specific to all Arcnet +devices (see +.Pa sys/net/if_arcsubr.c ) +and should be moved to a more generic location. |