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130 lines · 5.3 KiB

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: [email protected]
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 */