drivers/serial/dz.h

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