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