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Annotation of Gnu-Mach/chips/dz_7085.h, revision 1.1

1.1     ! root        1: /* 
        !             2:  * Mach Operating System
        !             3:  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
        !             4:  * All Rights Reserved.
        !             5:  * 
        !             6:  * Permission to use, copy, modify and distribute this software and its
        !             7:  * documentation is hereby granted, provided that both the copyright
        !             8:  * notice and this permission notice appear in all copies of the
        !             9:  * software, derivative works or modified versions, and any portions
        !            10:  * thereof, and that both notices appear in supporting documentation.
        !            11:  * 
        !            12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            15:  * 
        !            16:  * Carnegie Mellon requests users of this software to return to
        !            17:  * 
        !            18:  *  Software Distribution Coordinator  or  [email protected]
        !            19:  *  School of Computer Science
        !            20:  *  Carnegie Mellon University
        !            21:  *  Pittsburgh PA 15213-3890
        !            22:  * 
        !            23:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            24:  * the rights to redistribute these changes.
        !            25:  */
        !            26: /*
        !            27:  *     File: dz_7085.h
        !            28:  *     Author: Alessandro Forin, Carnegie Mellon University
        !            29:  *     Date:   9/90
        !            30:  *
        !            31:  *     Defines for the DEC 7085 Serial Line Controller Chip
        !            32:  */
        !            33: 
        !            34: #define        NDZ_LINE                4
        !            35: 
        !            36: /*
        !            37:  * What's hanging off those 4 lines
        !            38:  */
        !            39: 
        !            40: #define DZ_LINE_KEYBOARD       0
        !            41: #define DZ_LINE_MOUSE          1
        !            42: #define DZ_LINE_MODEM          2
        !            43: #define DZ_LINE_PRINTER                3
        !            44: 
        !            45: /*
        !            46:  * Register layout, ignoring padding
        !            47:  */
        !            48: typedef struct {
        !            49:        volatile unsigned short dz_csr;         /* Control and Status */
        !            50:        volatile unsigned short dz_rbuf;        /* Rcv buffer (RONLY) */
        !            51:        volatile unsigned short dz_tcr;         /* Xmt control (R/W)*/
        !            52:        volatile unsigned short dz_tbuf;        /* Xmt buffer (WONLY)*/
        !            53: #      define                  dz_lpr dz_rbuf  /* Line parameters (WONLY)*/
        !            54: #      define                  dz_msr dz_tbuf  /* Modem status (RONLY)*/
        !            55: } dz_regmap_t;
        !            56: 
        !            57: /*
        !            58:  * CSR bits
        !            59:  */
        !            60: 
        !            61: #define DZ_CSR_MBZ             0x3c07  /* Must be zero */
        !            62: #define DZ_CSR_MAINT           0x0008  /* rw: Maintenance mode */
        !            63: #define DZ_CSR_CLR             0x0010  /* rw: Master clear (init) */
        !            64: #define DZ_CSR_MSE             0x0020  /* rw: Master scan enable */
        !            65: #define DZ_CSR_RIE             0x0040  /* rw: Rcv Interrupt Enable */
        !            66: #define DZ_CSR_RDONE           0x0080  /* ro: Rcv done (silo avail) */
        !            67: #define DZ_CSR_TLINE           0x0300  /* ro: Lineno ready for xmt */
        !            68: #define DZ_CSR_TIE             0x4000  /* rw: Xmt Interrupt Enable */
        !            69: #define DZ_CSR_TRDY            0x8000  /* ro: Xmt ready */
        !            70: 
        !            71: /*
        !            72:  * Receiver buffer (top of silo).  Read-only.
        !            73:  */
        !            74: 
        !            75: #define DZ_SILO_DEEP           64
        !            76: 
        !            77: #define DZ_RBUF_CHAR           0x00ff  /* Received character */
        !            78: #define DZ_RBUF_RLINE          0x0300  /* Line it came from */
        !            79: #define DZ_RBUF_XXXX           0x0c00  /* Reads as zero */
        !            80: #define DZ_RBUF_PERR           0x1000  /* Parity error */
        !            81: #define DZ_RBUF_FERR           0x2000  /* Framing error (break) */
        !            82: #define DZ_RBUF_OERR           0x4000  /* Silo overrun */
        !            83: #define DZ_RBUF_VALID          0x8000  /* Info is valid */
        !            84: 
        !            85: /*
        !            86:  * Line parameters register.  Write-only.
        !            87:  */
        !            88: 
        !            89: #define DZ_LPAR_LINE           0x0003  /* Bin encoded line no */
        !            90: #define DZ_LPAR_MBZ            0xe004  /* Must be zero */
        !            91: #define DZ_LPAR_CLEN           0x0018  /* Character length: */
        !            92: #      define DZ_LPAR_5BITS    0x0000  /* 5 bits per char */
        !            93: #      define DZ_LPAR_6BITS    0x0008  /* 6 bits per char */
        !            94: #      define DZ_LPAR_7BITS    0x0010  /* 7 bits per char */
        !            95: #      define DZ_LPAR_8BITS    0x0018  /* 8 bits per char */
        !            96: #define DZ_LPAR_STOP           0x0020  /* stop bits: off->1, on->2 */
        !            97: #define DZ_LPAR_PAR_ENB                0x0040  /* generate/detect parity */
        !            98: #define DZ_LPAR_ODD_PAR                0x0080  /* generate/detect ODD parity */
        !            99: #define DZ_LPAR_SPEED          0x0f00  /* Speed code: */
        !           100: #      define DZ_LPAR_50       0x0000  /* 50 baud */
        !           101: #      define DZ_LPAR_75       0x0100  /* 75 baud */
        !           102: #      define DZ_LPAR_110      0x0200  /* 110 baud */
        !           103: #      define DZ_LPAR_134_5    0x0300  /* 134.5 baud */
        !           104: #      define DZ_LPAR_150      0x0400  /* 150 baud */
        !           105: #      define DZ_LPAR_300      0x0500  /* 300 baud */
        !           106: #      define DZ_LPAR_600      0x0600  /* 600 baud */
        !           107: #      define DZ_LPAR_1200     0x0700  /* 1200 baud */
        !           108: #      define DZ_LPAR_1800     0x0800  /* 1800 baud */
        !           109: #      define DZ_LPAR_2000     0x0900  /* 2000 baud */
        !           110: #      define DZ_LPAR_2400     0x0a00  /* 2400 baud */
        !           111: #      define DZ_LPAR_3600     0x0b00  /* 3600 baud */
        !           112: #      define DZ_LPAR_4800     0x0c00  /* 4800 baud */
        !           113: #      define DZ_LPAR_7200     0x0d00  /* 7200 baud */
        !           114: #      define DZ_LPAR_9600     0x0e00  /* 9600 baud */
        !           115: #      define DZ_LPAR_MAX_SPEED        0x0f00  /* 19200/38400 baud */
        !           116: #define DZ_LPAR_ENABLE         0x1000  /* Enable receiver */
        !           117: 
        !           118: /*
        !           119:  * Xmt control register
        !           120:  */
        !           121: 
        !           122: #define DZ_TCR_LNENB           0x000f  /* rw: Xmt line enable */
        !           123: #define DZ_TCR_MBZ             0xf0f0  /* Must be zero */
        !           124: #define DZ_TCR_DTR3            0x0100  /* rw: DTR on printer line */
        !           125: #define DZ_TCR_RTS3            0x0200  /* rw: RTS on printer line */
        !           126: #define DZ_TCR_DTR2            0x0400  /* rw: DTR on modem line */
        !           127: #define DZ_TCR_RTS2            0x0800  /* rw: RTS on modem line */
        !           128: 
        !           129: /*
        !           130:  * Modem status register. Read-only.
        !           131:  */
        !           132: 
        !           133: #define DZ_MSR_CTS3            0x0001  /* Clear To Send,  printer line */
        !           134: #define DZ_MSR_DSR3            0x0002  /* Data Set Ready, printer line */
        !           135: #define DZ_MSR_CD3             0x0004  /* Carrier Detect, printer line */
        !           136: #define DZ_MSR_RI3             0x0008  /* Ring Indicator, printer line */
        !           137: #define DZ_MSR_XXXX            0xf0f0  /* Reads as zero */
        !           138: #define DZ_MSR_CTS2            0x0100  /* Clear To Send,  modem line */
        !           139: #define DZ_MSR_DSR2            0x0200  /* Data Set Ready, modem line */
        !           140: #define DZ_MSR_CD2             0x0400  /* Carrier Detect, modem line */
        !           141: #define DZ_MSR_RI2             0x0800  /* Ring Indicator, modem line */
        !           142: 
        !           143: 
        !           144: /*
        !           145:  * Xmt buffer
        !           146:  */
        !           147: 
        !           148: #define DZ_TBUF_CHAR           0x00ff  /* Xmt character */
        !           149: #define DZ_TBUF_BREAK_0                0x0100  /* set line 0 to space */
        !           150: #define DZ_TBUF_BREAK_1                0x0200  /* set line 1 to space */
        !           151: #define DZ_TBUF_BREAK_2                0x0400  /* set line 2 to space */
        !           152: #define DZ_TBUF_BREAK_3                0x0800  /* set line 3 to space */
        !           153: #define DZ_TBUF_MBZ            0xf000  /* Must be zero */

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