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Diffstat (limited to 'share/man/man4/rc.4')
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diff --git a/share/man/man4/rc.4 b/share/man/man4/rc.4 new file mode 100644 index 000000000000..60c4fa501f07 --- /dev/null +++ b/share/man/man4/rc.4 @@ -0,0 +1,125 @@ +.\" +.\" 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 March 18, 2005 +.Dt RC 4 +.Os +.Sh NAME +.Nm rc +.Nd RISCom/8 multiport card +.Sh SYNOPSIS +.Cd device isa +.Cd device rc +.Sh DESCRIPTION +The +.Tn RISCom/8 +is an eight port +.Tn ISA +.Tn RS-232C +communications multiplexer with a built in +.Tn RISC +processor. +It uses a block of sixteen +.Tn I/O +ports in the range 0x200 to 0x3f0 selectable by on-board +switches or jumpers. +The block must be aligned on a sixteen port boundary. +The jumper-selectable hardware interrupt level may be set to +be detected during system +initialization using settings found in the +.Pa /boot/device.hints +file. +.Pp +This driver is mostly based on the Cirrus Logic CL-CD180 driver. +.Sh HARDWARE +The +.Nm +driver provides support for the +.Tn SDL +Communications +.Tn RISCom/8 +boards. +.Sh DIAGNOSTICS +The following driver specific error messages +may be reported: +.Bl -diag +.It "rc%d channel%d: interrupt-level buffer overflow" +An internal buffer overflow error has occurred on +the listed channel. +The +.Nm +driver will need to be reloaded to correct this. +.It "rc%d: Bad char chan %d" +The channel has obtained a bad set of characters. +.It "rc%d: Got extra chars chan %d" +The +.Nm +driver got more characters than expected on the channel shown. +.It "rc%d: data mismatch chan %d ptr %d (%d != %d)" +Data sent from channel +.Ar %d +to the rx buffer was different then expected. +.It "rc%d: channel %d command timeout, rc.c line: %d" +A command timeout has occurred on the channel, the +.Pa src/sys/dev/rc/rc.c +file can be consulted for more information. +.El +.Sh SEE ALSO +.Xr tty 1 , +.Xr ttyname 3 , +.Xr sio 4 , +.Xr tty 4 , +.Xr device.hints 5 , +.Xr comcontrol 8 , +.Xr getty 8 , +.Xr mutex 9 , +.Xr splx 9 +.Pp +.Pa http://www.sdlcomm.com +.Sh HISTORY +The +.Nm +driver first appeared in +.Fx 2.0.5 . +This manual page first appeared in +.Fx 5.3 . +.Sh AUTHORS +This manual page was written by +.An Tom Rhodes Aq trhodes@FreeBSD.org . +.Sh BUGS +The +.Nm +driver code still uses the +.Xr spl 9 +functions. +These should be replaced by +.Xr mutex 9 +functions. +.Pp +The various +.Fn ttyld_* +functions should be documented. |