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| Commit | Line | Data |
|---|---|---|
| da7c5cc6 KM |
1 | /* |
| 2 | * Copyright (c) 1982 Regents of the University of California. | |
| 3 | * All rights reserved. The Berkeley software License Agreement | |
| 4 | * specifies the terms and conditions for redistribution. | |
| 5 | * | |
| 6 | * @(#)if_dmc.h 6.4 (Berkeley) %G% | |
| 7 | */ | |
| c9fd255c BJ |
8 | |
| 9 | /* | |
| 10 | * DMC-11 Interface | |
| 11 | */ | |
| 12 | ||
| 13 | struct dmcdevice { | |
| e2f9ee06 MK |
14 | char bsel0; |
| 15 | char bsel1; | |
| 16 | char bsel2; | |
| 17 | char bsel3; | |
| 18 | short sel4; | |
| 19 | short sel6; | |
| c9fd255c BJ |
20 | }; |
| 21 | ||
| e2f9ee06 MK |
22 | /* |
| 23 | * dmc software packet encapsulation. This allows the dmc | |
| 24 | * link to be multiplexed among several protocols. | |
| 25 | * The first eight bytes of the dmc header are garbage, | |
| 26 | * since on a vax the uba has been known to mung these | |
| 27 | * bytes. The next two bytes encapsulate packet type. | |
| 28 | */ | |
| 29 | struct dmc_header { | |
| 30 | char dmc_buf[8]; /* space for uba on vax */ | |
| 31 | short dmc_type; /* encapsulate packet type */ | |
| 32 | }; | |
| 33 | ||
| 34 | /* packet types */ | |
| 35 | #define DMC_IPTYPE 1 | |
| 36 | #define DMC_TRAILER 2 | |
| 37 | #define DMC_NTRAILER 16 | |
| 38 | ||
| 39 | /* | |
| 40 | * DMCMTU includes space for data (1024) + | |
| 41 | * protocol header (256) + trailer descriptor (4). | |
| 42 | * The software link encapsulation header (dmc_header) | |
| 43 | * is handled separately. | |
| 44 | */ | |
| 45 | #define DMCMTU 1284 | |
| c9fd255c | 46 | |
| 12ef2795 | 47 | #define RDYSCAN 16 /* loop delay for RDYI after RQI */ |
| c9fd255c BJ |
48 | |
| 49 | /* defines for bsel0 */ | |
| 50 | #define DMC_BACCI 0 | |
| 51 | #define DMC_CNTLI 1 | |
| 52 | #define DMC_PERR 2 | |
| 53 | #define DMC_BASEI 3 | |
| 54 | #define DMC_WRITE 0 /* transmit block */ | |
| 55 | #define DMC_READ 4 /* read block */ | |
| 56 | #define DMC_RQI 0040 /* port request bit */ | |
| 57 | #define DMC_IEI 0100 /* enable input interrupts */ | |
| 58 | #define DMC_RDYI 0200 /* port ready */ | |
| ad6dfeed | 59 | #define DMC0BITS "\10\8RDI\7IEI\6RQI" |
| c9fd255c BJ |
60 | |
| 61 | /* defines for bsel1 */ | |
| 62 | #define DMC_MCLR 0100 /* DMC11 Master Clear */ | |
| 63 | #define DMC_RUN 0200 /* clock running */ | |
| ad6dfeed | 64 | #define DMC1BITS "\10\8RUN\7MCLR" |
| c9fd255c BJ |
65 | |
| 66 | /* defines for bsel2 */ | |
| 67 | #define DMC_BACCO 0 | |
| 68 | #define DMC_CNTLO 1 | |
| 69 | #define DMC_OUX 0 /* transmit block */ | |
| 70 | #define DMC_OUR 4 /* read block */ | |
| 71 | #define DMC_IEO 0100 /* enable output interrupts */ | |
| 72 | #define DMC_RDYO 0200 /* port available */ | |
| ad6dfeed | 73 | #define DMC2BITS "\10\8RDO\7IEO" |
| c9fd255c BJ |
74 | |
| 75 | /* defines for CNTLI mode */ | |
| 76 | #define DMC_HDPLX 02000 /* half duplex DDCMP operation */ | |
| 77 | #define DMC_SEC 04000 /* half duplex secondary station */ | |
| 78 | #define DMC_MAINT 00400 /* enter maintenance mode */ | |
| 79 | ||
| 80 | /* defines for BACCI/O and BASEI mode */ | |
| 81 | #define DMC_XMEM 0140000 /* xmem bit position */ | |
| 82 | #define DMC_CCOUNT 0037777 /* character count mask */ | |
| 83 | #define DMC_RESUME 0002000 /* resume (BASEI only) */ | |
| 84 | ||
| 85 | /* defines for CNTLO */ | |
| 86 | #define DMC_CNTMASK 01777 | |
| ad6dfeed TF |
87 | |
| 88 | #define DMC_DATACK 01 | |
| 89 | #define DMC_TIMEOUT 02 | |
| 90 | #define DMC_NOBUFS 04 | |
| 91 | #define DMC_MAINTREC 010 | |
| 92 | #define DMC_LOSTDATA 020 | |
| 93 | #define DMC_DISCONN 0100 | |
| 94 | #define DMC_START 0200 | |
| 95 | #define DMC_NEXMEM 0400 | |
| 96 | #define DMC_ERROR 01000 | |
| 97 | ||
| 98 | #define DMC_FATAL (DMC_ERROR|DMC_NEXMEM|DMC_START|DMC_LOSTDATA|DMC_MAINTREC) | |
| 99 | #define CNTLO_BITS \ | |
| 100 | "\10\12ERROR\11NEXMEM\10START\7DISC\5LSTDATA\4MAINT\3NOBUF\2TIMEO\1DATACK" |