174 lines
4.0 KiB
Groff
174 lines
4.0 KiB
Groff
.\"
|
|
.\" 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 Mt 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 Mt trhodes@FreeBSD.org .
|
|
The
|
|
.Sx IMPLEMENTATION NOTES
|
|
section was submitted by
|
|
.An Max Khon Aq Mt 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.
|