131 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * dz.h: Serial port driver for DECstations equipped4 * with the DZ chipset.5 *6 * Copyright (C) 1998 Olivier A. D. Lebaillif 7 * 8 * Email: olivier.lebaillif@ifrsys.com9 *10 * Copyright (C) 2004, 2006 Maciej W. Rozycki11 */12#ifndef DZ_SERIAL_H13#define DZ_SERIAL_H14 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 number40 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 0x000147#define DZ_LINE_MOUSE 0x000248#define DZ_LINE_MODEM 0x000449#define DZ_LINE_PRINTER 0x000850 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 0x000098#define DZ_B75 0x010099#define DZ_B110 0x0200100#define DZ_B134 0x0300101#define DZ_B150 0x0400102#define DZ_B300 0x0500103#define DZ_B600 0x0600104#define DZ_B1200 0x0700 105#define DZ_B1800 0x0800106#define DZ_B2000 0x0900107#define DZ_B2400 0x0A00108#define DZ_B3600 0x0B00109#define DZ_B4800 0x0C00110#define DZ_B7200 0x0D00111#define DZ_B9600 0x0E00112 113#define DZ_RXENAB 0x1000 /* Receiver Enable */114 115/*116 * Addresses for the DZ registers117 */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 4126 127#define DZ_XMIT_SIZE 4096 /* buffer size */128#define DZ_WAKEUP_CHARS DZ_XMIT_SIZE/4129 130#endif /* DZ_SERIAL_H */131