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 */