1.\" $NetBSD: dmv.4,v 1.10 2002/01/15 02:06:30 wiz Exp $ 2.\" 3.\" Copyright (c) 1988, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" from: @(#)dmv.4 8.1 (Berkeley) 6/5/93 35.\" 36.Dd June 5, 1993 37.Dt DMV 4 vax 38.Os 39.Sh NAME 40.Nm dmv 41.Nd 42.Tn DEC 43.Tn DMV-11 44point-to-point serial communications device 45.Sh SYNOPSIS 46.Cd "dmv0 at uba0 csr 167000 vector dmvrint dmvxint" 47.Sh DESCRIPTION 48NOTE: This driver has not been ported from 49.Bx 4.4 50yet. 51.Pp 52The 53.Nm dmv 54interface provides access to a point-to-point communications 55device which runs at up to 56 Kb/s. 56.Tn DMV-11 Ns s 57communicate 58using the 59.Tn DEC 60.Tn DDCMP 61link layer protocol. 62.Pp 63The host's address must be specified with an 64.Dv SIOCSIFADDR 65.Xr ioctl 2 , 66and the destination address specified with a 67.Dv SIOCSIFDSTADDR 68.Xr ioctl 2 , 69before the interface will transmit or receive any packets. 70.Sh ROUTING 71The driver places a 72.Tn HOST 73entry in the kernel routing tables for the 74address given in the 75.Dv SIOCSIFDSTADDR 76.Xr ioctl 2 . 77To use the 78.Tn DMV 79as a 80link between local nets, the route to the remote net must be added manually 81with the 82.Xr route 8 83command, or by the use of the routing process 84.Xr routed 8 85on each end of the link. 86.Sh DIAGNOSTICS 87.Bl -diag 88.It dmvprobe: can't start device. 89.It "dmvprobe: device init failed, bsel4=%o, bsel6=%o." 90The probe routine was unable to start the device. 91.Pp 92.It dmvinit: dmv%d not running. 93.It dmvrestart: can't start device. 94.It "dmv%d: device init failed, bsel4=%o, bsel6=%o." 95The initialization/restart routine was unable to start the device. 96.Pp 97.It dmv%d: far end on-line. 98The other end of the connection has come online. 99.Pp 100.It dmv%d: far end restart. 101The other end of the line has restarted. 102.Pp 103.It dmv%d: bad control %o. 104A bad parameter was passed to the 105.Em dmvload 106routine. 107.Pp 108.It "dmvxint: dmv%d bad rcv pkt addr 0x%x len 0x%x." 109A bad packet was received. 110.Pp 111.It "dmv%d: bad packet address 0x%x." 112An input packet was received which contained a type of 113address unknown to the driver. 114.Pp 115.It "dmvxint: dmv%d unallocated packet 0x%x." 116A protocol error has occurred with the board. 117.Pp 118.It "dmvoutput, dmv%d can't handle af%d." 119A packet for an unsupported address family has been sent. 120.Pp 121.It "dmv%d: output timeout, bsel0=%b bsel2=%b." 122A device timeout occurred. 123.El 124.Pp 125Numerous other device errors may be displayed. 126.Sh SEE ALSO 127.Xr dmc 4 , 128.Xr inet 4 , 129.Xr intro 4 130.Sh HISTORY 131The 132.Nm 133driver appeared in 134.Bx 4.3 tahoe . 135