130 lines
3.5 KiB
Groff
130 lines
3.5 KiB
Groff
.\" $NetBSD: hdh.4,v 1.13 2017/08/01 11:11:17 wiz Exp $
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.\"
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.\" Copyright (c) 1983, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" from: @(#)hdh.4 8.1 (Berkeley) 6/5/93
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.\"
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.Dd June 5, 1993
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.Dt HDH 4 vax
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.Os
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.Sh NAME
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.Nm hdh
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.Nd
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.Tn ACC
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.Tn IF-11/HDH
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.Tn IMP
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network interface
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.Sh SYNOPSIS
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.Cd "pseudo-device imp"
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.Cd "hdh0 at uba0 csr 166740 vector hdhintr"
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.Sh DESCRIPTION
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NOTE: This driver has not been ported from
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.Bx 4.4
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yet.
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.Pp
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NOTE: At the moment,
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.Nx
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does not support
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.Tn IMP ,
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so this manual page is not relevant.
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.Pp
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The
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.Nm hdh
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device provides an
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.Tn HDLC
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Host
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.Pq Tn HDH
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interface to an
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.Tn IMP .
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It is normally used when participating
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in the
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.Tn DARPA
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Internet.
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The controller itself is not accessible
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to users, but instead provides the hardware support to the
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.Tn IMP
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interface described in
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.Xr imp 4 .
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The configuration entry for the
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.Tn IMP
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must also include the
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.Em pseudo-device
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as shown above in the
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.Sx SYNOPSIS .
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.Sh DIAGNOSTICS
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.Bl -diag
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.It hdh%d: not alive.
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The initialization routine was entered even though the device
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did not autoconfigure.
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This indicates a system problem.
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.It hdh%d: cannot get chan %d uba resources.
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Insufficient
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.Tn UNIBUS
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resources existed to initialize the device.
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This is likely to be a shortage of
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.Tn UNIBUS
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mapping registers.
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.It hdh%d: LINE UP.
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This indicates that both the
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.Tn HDLC
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and
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.Tn HDH
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protocols have declared the
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link to the
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.Tn IMP
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alive.
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.It hdh%d: LINE DOWN.
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This indicates that the link to the
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.Tn IMP
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has died.
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.It hdh%d: TIMEOUT.
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.It hdh%d: HOST DATA ERROR.
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.It hdh%d: IMP SEQUENCE ERROR.
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.It hdh%d: HOST SEQUENCE ERROR.
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These errors indicate that an
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.Tn HDH
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protocol error has been detected.
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.It hdh%d: cannot get supervisor cmnd buffer.
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This error indicates that an
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.Em mbuf
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could not be allocated to send a command to the
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.Tn IF-11/HDH .
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.El
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.Pp
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Any other error message from hdh%d: indicates a serious error
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detected by either the driver or the
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.Tn IF-11/HDH
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firmware.
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.Sh SEE ALSO
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.Xr netintro 4
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.Sh HISTORY
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The
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.Nm
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driver appeared in
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.Bx 4.3 .
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