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1.1 root 1: /*
2: * Copyright (c) 1982, 1986 Regents of the University of California.
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. All advertising materials mentioning features or use of this software
14: * must display the following acknowledgement:
15: * This product includes software developed by the University of
16: * California, Berkeley and its contributors.
17: * 4. Neither the name of the University nor the names of its contributors
18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: *
33: * @(#)if_dmc.h 7.5 (Berkeley) 6/28/90
34: */
35:
36: /*
37: * DMC-11 Interface
38: */
39:
40: struct dmcdevice {
41: char bsel0;
42: char bsel1;
43: char bsel2;
44: char bsel3;
45: short sel4;
46: short sel6;
47: };
48:
49: /*
50: * dmc software packet encapsulation. This allows the dmc
51: * link to be multiplexed among several protocols.
52: * The first eight bytes of the dmc header are garbage,
53: * since on a vax the uba has been known to mung these
54: * bytes. The next two bytes encapsulate packet type.
55: */
56: struct dmc_header {
57: char dmc_buf[8]; /* space for uba on vax */
58: short dmc_type; /* encapsulate packet type */
59: };
60:
61: /* packet types */
62: #define DMC_IPTYPE 1
63: #define DMC_TRAILER 2
64: #define DMC_NTRAILER 16
65:
66: /*
67: * DMCMTU includes space for data (1024) +
68: * protocol header (256) + trailer descriptor (4).
69: * The software link encapsulation header (dmc_header)
70: * is handled separately.
71: #define DMCMTU 1284
72: */
73: #define DMCMTU 1500
74:
75: #define RDYSCAN 16 /* loop delay for RDYI after RQI */
76:
77: /* defines for bsel0 */
78: #define DMC_BACCI 0
79: #define DMC_CNTLI 1
80: #define DMC_PERR 2
81: #define DMC_BASEI 3
82: #define DMC_WRITE 0 /* transmit block */
83: #define DMC_READ 4 /* read block */
84: #define DMC_RQI 0040 /* port request bit */
85: #define DMC_IEI 0100 /* enable input interrupts */
86: #define DMC_RDYI 0200 /* port ready */
87: #define DMC0BITS "\10\10RDI\7IEI\6RQI"
88:
89: /* defines for bsel1 */
90: #define DMC_MCLR 0100 /* DMC11 Master Clear */
91: #define DMC_RUN 0200 /* clock running */
92: #define DMC1BITS "\10\10RUN\7MCLR"
93:
94: /* defines for bsel2 */
95: #define DMC_BACCO 0
96: #define DMC_CNTLO 1
97: #define DMC_OUX 0 /* transmit block */
98: #define DMC_OUR 4 /* read block */
99: #define DMC_IEO 0100 /* enable output interrupts */
100: #define DMC_RDYO 0200 /* port available */
101: #define DMC2BITS "\10\10RDO\7IEO"
102:
103: /* defines for CNTLI mode */
104: #define DMC_HDPLX 02000 /* half duplex DDCMP operation */
105: #define DMC_SEC 04000 /* half duplex secondary station */
106: #define DMC_MAINT 00400 /* enter maintenance mode */
107:
108: /* defines for BACCI/O and BASEI mode */
109: #define DMC_XMEM 0140000 /* xmem bit position */
110: #define DMC_CCOUNT 0037777 /* character count mask */
111: #define DMC_RESUME 0002000 /* resume (BASEI only) */
112:
113: /* defines for CNTLO */
114: #define DMC_CNTMASK 01777
115:
116: #define DMC_DATACK 01
117: #define DMC_TIMEOUT 02
118: #define DMC_NOBUFS 04
119: #define DMC_MAINTREC 010
120: #define DMC_LOSTDATA 020
121: #define DMC_DISCONN 0100
122: #define DMC_START 0200
123: #define DMC_NEXMEM 0400
124: #define DMC_ERROR 01000
125:
126: #define DMC_FATAL (DMC_ERROR|DMC_NEXMEM|DMC_START|DMC_LOSTDATA|DMC_MAINTREC)
127: #define CNTLO_BITS \
128: "\10\12ERROR\11NEXMEM\10START\7DISC\5LSTDATA\4MAINT\3NOBUF\2TIMEO\1DATACK"
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