FreeBSD/Linux Kernel Cross Reference
sys/chips/dz_7085.h

     /* 
      * Mach Operating System
      * Copyright (c) 1991,1990,1989 Carnegie Mellon University
      * All Rights Reserved.
      * 
      * Permission to use, copy, modify and distribute this software and its
      * documentation is hereby granted, provided that both the copyright
      * notice and this permission notice appear in all copies of the
      * software, derivative works or modified versions, and any portions
     * thereof, and that both notices appear in supporting documentation.
     * 
     * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
     * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     * 
     * Carnegie Mellon requests users of this software to return to
     * 
     *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
     *  School of Computer Science
     *  Carnegie Mellon University
     *  Pittsburgh PA 15213-3890
     * 
     * any improvements or extensions that they make and grant Carnegie Mellon
     * the rights to redistribute these changes.
     */
    /*
     * HISTORY
     * $Log:        dz_7085.h,v $
     * Revision 2.7  91/08/24  11:51:44  af
     *      Moved padding down in impl file.
     *      [91/08/02  02:14:58  af]
     * 
     * Revision 2.6  91/06/19  11:47:26  rvb
     *      mips->DECSTATION; vax->VAXSTATION
     *      [91/06/12  14:01:26  rvb]
     * 
     *      File moved here from mips/PMAX since it tries to be generic;
     *      it is used on the PMAX and the Vax3100.
     *      [91/06/04            rvb]
     * 
     *      Split out machine specific details to machine/dev/dz_7085.h
     *      [91/05/20            rvb]
     * 
     * Revision 2.5  91/05/14  17:20:49  mrt
     *      Correcting copyright
     * 
     * Revision 2.4  91/02/05  17:40:27  mrt
     *      Added author notices
     *      [91/02/04  11:12:51  mrt]
     * 
     *      Changed to use new Mach copyright
     *      [91/02/02  12:10:38  mrt]
     * 
     * Revision 2.3  90/12/05  23:30:46  af
     *      Cleaned up.
     *      [90/12/03  23:14:00  af]
     * 
     * Revision 2.1.1.1  90/11/01  03:37:28  af
     *      Created, from the DEC specs:
     *      "DECstation 5000/200 KN02 System Module Functional Specification"
     *      Workstation Systems Engineering, Palo Alto, CA. Aug 27, 1990.
     *      [90/09/03            af]
     */
    /*
     *      File: dz_7085.h
     *      Author: Alessandro Forin, Carnegie Mellon University
     *      Date:   9/90
     *
     *      Defines for the DEC 7085 Serial Line Controller Chip
     */
    
    #define NDZ_LINE                4
    
    /*
     * What's hanging off those 4 lines
     */
    
    #define DZ_LINE_KEYBOARD        0
    #define DZ_LINE_MOUSE           1
    #define DZ_LINE_MODEM           2
    #define DZ_LINE_PRINTER         3
    
    /*
     * Register layout, ignoring padding
     */
    typedef struct {
            volatile unsigned short dz_csr;         /* Control and Status */
            volatile unsigned short dz_rbuf;        /* Rcv buffer (RONLY) */
            volatile unsigned short dz_tcr;         /* Xmt control (R/W)*/
            volatile unsigned short dz_tbuf;        /* Xmt buffer (WONLY)*/
    #       define                  dz_lpr dz_rbuf  /* Line parameters (WONLY)*/
    #       define                  dz_msr dz_tbuf  /* Modem status (RONLY)*/
    } dz_regmap_t;
    
    /*
     * CSR bits
     */
    
    #define DZ_CSR_MBZ              0x3c07  /* Must be zero */
   #define DZ_CSR_MAINT            0x0008  /* rw: Maintenance mode */
   #define DZ_CSR_CLR              0x0010  /* rw: Master clear (init) */
   #define DZ_CSR_MSE              0x0020  /* rw: Master scan enable */
   #define DZ_CSR_RIE              0x0040  /* rw: Rcv Interrupt Enable */
   #define DZ_CSR_RDONE            0x0080  /* ro: Rcv done (silo avail) */
   #define DZ_CSR_TLINE            0x0300  /* ro: Lineno ready for xmt */
   #define DZ_CSR_TIE              0x4000  /* rw: Xmt Interrupt Enable */
   #define DZ_CSR_TRDY             0x8000  /* ro: Xmt ready */
   
   /*
    * Receiver buffer (top of silo).  Read-only.
    */
   
   #define DZ_SILO_DEEP            64
   
   #define DZ_RBUF_CHAR            0x00ff  /* Received character */
   #define DZ_RBUF_RLINE           0x0300  /* Line it came from */
   #define DZ_RBUF_XXXX            0x0c00  /* Reads as zero */
   #define DZ_RBUF_PERR            0x1000  /* Parity error */
   #define DZ_RBUF_FERR            0x2000  /* Framing error (break) */
   #define DZ_RBUF_OERR            0x4000  /* Silo overrun */
   #define DZ_RBUF_VALID           0x8000  /* Info is valid */
   
   /*
    * Line parameters register.  Write-only.
    */
   
   #define DZ_LPAR_LINE            0x0003  /* Bin encoded line no */
   #define DZ_LPAR_MBZ             0xe004  /* Must be zero */
   #define DZ_LPAR_CLEN            0x0018  /* Character length: */
   #       define DZ_LPAR_5BITS    0x0000  /* 5 bits per char */
   #       define DZ_LPAR_6BITS    0x0008  /* 6 bits per char */
   #       define DZ_LPAR_7BITS    0x0010  /* 7 bits per char */
   #       define DZ_LPAR_8BITS    0x0018  /* 8 bits per char */
   #define DZ_LPAR_STOP            0x0020  /* stop bits: off->1, on->2 */
   #define DZ_LPAR_PAR_ENB         0x0040  /* generate/detect parity */
   #define DZ_LPAR_ODD_PAR         0x0080  /* generate/detect ODD parity */
   #define DZ_LPAR_SPEED           0x0f00  /* Speed code: */
   #       define DZ_LPAR_50       0x0000  /* 50 baud */
   #       define DZ_LPAR_75       0x0100  /* 75 baud */
   #       define DZ_LPAR_110      0x0200  /* 110 baud */
   #       define DZ_LPAR_134_5    0x0300  /* 134.5 baud */
   #       define DZ_LPAR_150      0x0400  /* 150 baud */
   #       define DZ_LPAR_300      0x0500  /* 300 baud */
   #       define DZ_LPAR_600      0x0600  /* 600 baud */
   #       define DZ_LPAR_1200     0x0700  /* 1200 baud */
   #       define DZ_LPAR_1800     0x0800  /* 1800 baud */
   #       define DZ_LPAR_2000     0x0900  /* 2000 baud */
   #       define DZ_LPAR_2400     0x0a00  /* 2400 baud */
   #       define DZ_LPAR_3600     0x0b00  /* 3600 baud */
   #       define DZ_LPAR_4800     0x0c00  /* 4800 baud */
   #       define DZ_LPAR_7200     0x0d00  /* 7200 baud */
   #       define DZ_LPAR_9600     0x0e00  /* 9600 baud */
   #       define DZ_LPAR_MAX_SPEED        0x0f00  /* 19200/38400 baud */
   #define DZ_LPAR_ENABLE          0x1000  /* Enable receiver */
   
   /*
    * Xmt control register
    */
   
   #define DZ_TCR_LNENB            0x000f  /* rw: Xmt line enable */
   #define DZ_TCR_MBZ              0xf0f0  /* Must be zero */
   #define DZ_TCR_DTR3             0x0100  /* rw: DTR on printer line */
   #define DZ_TCR_RTS3             0x0200  /* rw: RTS on printer line */
   #define DZ_TCR_DTR2             0x0400  /* rw: DTR on modem line */
   #define DZ_TCR_RTS2             0x0800  /* rw: RTS on modem line */
   
   /*
    * Modem status register. Read-only.
    */
   
   #define DZ_MSR_CTS3             0x0001  /* Clear To Send,  printer line */
   #define DZ_MSR_DSR3             0x0002  /* Data Set Ready, printer line */
   #define DZ_MSR_CD3              0x0004  /* Carrier Detect, printer line */
   #define DZ_MSR_RI3              0x0008  /* Ring Indicator, printer line */
   #define DZ_MSR_XXXX             0xf0f0  /* Reads as zero */
   #define DZ_MSR_CTS2             0x0100  /* Clear To Send,  modem line */
   #define DZ_MSR_DSR2             0x0200  /* Data Set Ready, modem line */
   #define DZ_MSR_CD2              0x0400  /* Carrier Detect, modem line */
   #define DZ_MSR_RI2              0x0800  /* Ring Indicator, modem line */
   
   
   /*
    * Xmt buffer
    */
   
   #define DZ_TBUF_CHAR            0x00ff  /* Xmt character */
   #define DZ_TBUF_BREAK_0         0x0100  /* set line 0 to space */
   #define DZ_TBUF_BREAK_1         0x0200  /* set line 1 to space */
   #define DZ_TBUF_BREAK_2         0x0400  /* set line 2 to space */
   #define DZ_TBUF_BREAK_3         0x0800  /* set line 3 to space */
   #define DZ_TBUF_MBZ             0xf000  /* Must be zero */

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