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Diffstat (limited to '')
| -rw-r--r-- | drivers/tty/serial/dz.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/drivers/tty/serial/dz.h b/drivers/tty/serial/dz.h new file mode 100644 index 000000000..3b3e31954 --- /dev/null +++ b/drivers/tty/serial/dz.h @@ -0,0 +1,130 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * dz.h: Serial port driver for DECstations equipped + * with the DZ chipset. + * + * Copyright (C) 1998 Olivier A. D. Lebaillif + * + * Email: olivier.lebaillif@ifrsys.com + * + * Copyright (C) 2004, 2006 Maciej W. Rozycki + */ +#ifndef DZ_SERIAL_H +#define DZ_SERIAL_H + +/* + * Definitions for the Control and Status Register. + */ +#define DZ_TRDY 0x8000 /* Transmitter empty */ +#define DZ_TIE 0x4000 /* Transmitter Interrupt Enbl */ +#define DZ_TLINE 0x0300 /* Transmitter Line Number */ +#define DZ_RDONE 0x0080 /* Receiver data ready */ +#define DZ_RIE 0x0040 /* Receive Interrupt Enable */ +#define DZ_MSE 0x0020 /* Master Scan Enable */ +#define DZ_CLR 0x0010 /* Master reset */ +#define DZ_MAINT 0x0008 /* Loop Back Mode */ + +/* + * Definitions for the Receiver Buffer Register. + */ +#define DZ_RBUF_MASK 0x00FF /* Data Mask */ +#define DZ_LINE_MASK 0x0300 /* Line Mask */ +#define DZ_DVAL 0x8000 /* Valid Data indicator */ +#define DZ_OERR 0x4000 /* Overrun error indicator */ +#define DZ_FERR 0x2000 /* Frame error indicator */ +#define DZ_PERR 0x1000 /* Parity error indicator */ + +#define DZ_BREAK 0x0800 /* BREAK event software flag */ + +#define LINE(x) ((x & DZ_LINE_MASK) >> 8) /* Get the line number + from the input buffer */ +#define UCHAR(x) ((unsigned char)(x & DZ_RBUF_MASK)) + +/* + * Definitions for the Transmit Control Register. + */ +#define DZ_LINE_KEYBOARD 0x0001 +#define DZ_LINE_MOUSE 0x0002 +#define DZ_LINE_MODEM 0x0004 +#define DZ_LINE_PRINTER 0x0008 + +#define DZ_MODEM_RTS 0x0800 /* RTS for the modem line (2) */ +#define DZ_MODEM_DTR 0x0400 /* DTR for the modem line (2) */ +#define DZ_PRINT_RTS 0x0200 /* RTS for the prntr line (3) */ +#define DZ_PRINT_DTR 0x0100 /* DTR for the prntr line (3) */ +#define DZ_LNENB 0x000f /* Transmitter Line Enable */ + +/* + * Definitions for the Modem Status Register. + */ +#define DZ_MODEM_RI 0x0800 /* RI for the modem line (2) */ +#define DZ_MODEM_CD 0x0400 /* CD for the modem line (2) */ +#define DZ_MODEM_DSR 0x0200 /* DSR for the modem line (2) */ +#define DZ_MODEM_CTS 0x0100 /* CTS for the modem line (2) */ +#define DZ_PRINT_RI 0x0008 /* RI for the printer line (3) */ +#define DZ_PRINT_CD 0x0004 /* CD for the printer line (3) */ +#define DZ_PRINT_DSR 0x0002 /* DSR for the prntr line (3) */ +#define DZ_PRINT_CTS 0x0001 /* CTS for the prntr line (3) */ + +/* + * Definitions for the Transmit Data Register. + */ +#define DZ_BRK0 0x0100 /* Break assertion for line 0 */ +#define DZ_BRK1 0x0200 /* Break assertion for line 1 */ +#define DZ_BRK2 0x0400 /* Break assertion for line 2 */ +#define DZ_BRK3 0x0800 /* Break assertion for line 3 */ + +/* + * Definitions for the Line Parameter Register. + */ +#define DZ_KEYBOARD 0x0000 /* line 0 = keyboard */ +#define DZ_MOUSE 0x0001 /* line 1 = mouse */ +#define DZ_MODEM 0x0002 /* line 2 = modem */ +#define DZ_PRINTER 0x0003 /* line 3 = printer */ + +#define DZ_CSIZE 0x0018 /* Number of bits per byte (mask) */ +#define DZ_CS5 0x0000 /* 5 bits per byte */ +#define DZ_CS6 0x0008 /* 6 bits per byte */ +#define DZ_CS7 0x0010 /* 7 bits per byte */ +#define DZ_CS8 0x0018 /* 8 bits per byte */ + +#define DZ_CSTOPB 0x0020 /* 2 stop bits instead of one */ + +#define DZ_PARENB 0x0040 /* Parity enable */ +#define DZ_PARODD 0x0080 /* Odd parity instead of even */ + +#define DZ_CBAUD 0x0E00 /* Baud Rate (mask) */ +#define DZ_B50 0x0000 +#define DZ_B75 0x0100 +#define DZ_B110 0x0200 +#define DZ_B134 0x0300 +#define DZ_B150 0x0400 +#define DZ_B300 0x0500 +#define DZ_B600 0x0600 +#define DZ_B1200 0x0700 +#define DZ_B1800 0x0800 +#define DZ_B2000 0x0900 +#define DZ_B2400 0x0A00 +#define DZ_B3600 0x0B00 +#define DZ_B4800 0x0C00 +#define DZ_B7200 0x0D00 +#define DZ_B9600 0x0E00 + +#define DZ_RXENAB 0x1000 /* Receiver Enable */ + +/* + * Addresses for the DZ registers + */ +#define DZ_CSR 0x00 /* Control and Status Register */ +#define DZ_RBUF 0x08 /* Receive Buffer */ +#define DZ_LPR 0x08 /* Line Parameters Register */ +#define DZ_TCR 0x10 /* Transmitter Control Register */ +#define DZ_MSR 0x18 /* Modem Status Register */ +#define DZ_TDR 0x18 /* Transmit Data Register */ + +#define DZ_NB_PORT 4 + +#define DZ_XMIT_SIZE 4096 /* buffer size */ +#define DZ_WAKEUP_CHARS DZ_XMIT_SIZE/4 + +#endif /* DZ_SERIAL_H */ |