LXR linux/drivers/tty/serial/dz.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * dz.h: Serial port driver for DECstations equipped
   4 *       with the DZ chipset.
   5 *
   6 * Copyright (C) 1998 Olivier A. D. Lebaillif 
   7 *             
   8 * Email: olivier.lebaillif@ifrsys.com
   9 *
  10 * Copyright (C) 2004, 2006  Maciej W. Rozycki
  11 */
  12#ifndef DZ_SERIAL_H
  13#define DZ_SERIAL_H
  14
  15/*
  16 * Definitions for the Control and Status Register.
  17 */
  18#define DZ_TRDY        0x8000                 /* Transmitter empty */
  19#define DZ_TIE         0x4000                 /* Transmitter Interrupt Enbl */
  20#define DZ_TLINE       0x0300                 /* Transmitter Line Number */
  21#define DZ_RDONE       0x0080                 /* Receiver data ready */
  22#define DZ_RIE         0x0040                 /* Receive Interrupt Enable */
  23#define DZ_MSE         0x0020                 /* Master Scan Enable */
  24#define DZ_CLR         0x0010                 /* Master reset */
  25#define DZ_MAINT       0x0008                 /* Loop Back Mode */
  26
  27/*
  28 * Definitions for the Receiver Buffer Register.
  29 */
  30#define DZ_RBUF_MASK   0x00FF                 /* Data Mask */
  31#define DZ_LINE_MASK   0x0300                 /* Line Mask */
  32#define DZ_DVAL        0x8000                 /* Valid Data indicator */
  33#define DZ_OERR        0x4000                 /* Overrun error indicator */
  34#define DZ_FERR        0x2000                 /* Frame error indicator */
  35#define DZ_PERR        0x1000                 /* Parity error indicator */
  36
  37#define DZ_BREAK       0x0800                 /* BREAK event software flag */
  38
  39#define LINE(x) ((x & DZ_LINE_MASK) >> 8)     /* Get the line number
  40                                                 from the input buffer */
  41#define UCHAR(x) ((unsigned char)(x & DZ_RBUF_MASK))
  42
  43/*
  44 * Definitions for the Transmit Control Register.
  45 */
  46#define DZ_LINE_KEYBOARD 0x0001
  47#define DZ_LINE_MOUSE    0x0002
  48#define DZ_LINE_MODEM    0x0004
  49#define DZ_LINE_PRINTER  0x0008
  50
  51#define DZ_MODEM_RTS     0x0800               /* RTS for the modem line (2) */
  52#define DZ_MODEM_DTR     0x0400               /* DTR for the modem line (2) */
  53#define DZ_PRINT_RTS     0x0200               /* RTS for the prntr line (3) */
  54#define DZ_PRINT_DTR     0x0100               /* DTR for the prntr line (3) */
  55#define DZ_LNENB         0x000f               /* Transmitter Line Enable */
  56
  57/*
  58 * Definitions for the Modem Status Register.
  59 */
  60#define DZ_MODEM_RI      0x0800               /* RI for the modem line (2) */
  61#define DZ_MODEM_CD      0x0400               /* CD for the modem line (2) */
  62#define DZ_MODEM_DSR     0x0200               /* DSR for the modem line (2) */
  63#define DZ_MODEM_CTS     0x0100               /* CTS for the modem line (2) */
  64#define DZ_PRINT_RI      0x0008               /* RI for the printer line (3) */
  65#define DZ_PRINT_CD      0x0004               /* CD for the printer line (3) */
  66#define DZ_PRINT_DSR     0x0002               /* DSR for the prntr line (3) */
  67#define DZ_PRINT_CTS     0x0001               /* CTS for the prntr line (3) */
  68
  69/*
  70 * Definitions for the Transmit Data Register.
  71 */
  72#define DZ_BRK0          0x0100               /* Break assertion for line 0 */
  73#define DZ_BRK1          0x0200               /* Break assertion for line 1 */
  74#define DZ_BRK2          0x0400               /* Break assertion for line 2 */
  75#define DZ_BRK3          0x0800               /* Break assertion for line 3 */
  76
  77/*
  78 * Definitions for the Line Parameter Register.
  79 */
  80#define DZ_KEYBOARD      0x0000               /* line 0 = keyboard */
  81#define DZ_MOUSE         0x0001               /* line 1 = mouse */
  82#define DZ_MODEM         0x0002               /* line 2 = modem */
  83#define DZ_PRINTER       0x0003               /* line 3 = printer */
  84
  85#define DZ_CSIZE         0x0018               /* Number of bits per byte (mask) */
  86#define DZ_CS5           0x0000               /* 5 bits per byte */
  87#define DZ_CS6           0x0008               /* 6 bits per byte */
  88#define DZ_CS7           0x0010               /* 7 bits per byte */
  89#define DZ_CS8           0x0018               /* 8 bits per byte */
  90
  91#define DZ_CSTOPB        0x0020               /* 2 stop bits instead of one */ 
  92
  93#define DZ_PARENB        0x0040               /* Parity enable */
  94#define DZ_PARODD        0x0080               /* Odd parity instead of even */
  95
  96#define DZ_CBAUD         0x0E00               /* Baud Rate (mask) */
  97#define DZ_B50           0x0000
  98#define DZ_B75           0x0100
  99#define DZ_B110          0x0200
 100#define DZ_B134          0x0300
 101#define DZ_B150          0x0400
 102#define DZ_B300          0x0500
 103#define DZ_B600          0x0600
 104#define DZ_B1200         0x0700 
 105#define DZ_B1800         0x0800
 106#define DZ_B2000         0x0900
 107#define DZ_B2400         0x0A00
 108#define DZ_B3600         0x0B00
 109#define DZ_B4800         0x0C00
 110#define DZ_B7200         0x0D00
 111#define DZ_B9600         0x0E00
 112
 113#define DZ_RXENAB        0x1000               /* Receiver Enable */
 114
 115/*
 116 * Addresses for the DZ registers
 117 */
 118#define DZ_CSR       0x00            /* Control and Status Register */
 119#define DZ_RBUF      0x08            /* Receive Buffer */
 120#define DZ_LPR       0x08            /* Line Parameters Register */
 121#define DZ_TCR       0x10            /* Transmitter Control Register */
 122#define DZ_MSR       0x18            /* Modem Status Register */
 123#define DZ_TDR       0x18            /* Transmit Data Register */
 124
 125#define DZ_NB_PORT 4
 126
 127#define DZ_XMIT_SIZE   4096                 /* buffer size */
 128#define DZ_WAKEUP_CHARS   DZ_XMIT_SIZE/4
 129
 130#endif /* DZ_SERIAL_H */
 131