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