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1/*
2 * dz.h: Serial port driver for DECStations equiped
3 * with the DZ chipset.
4 *
5 * Copyright (C) 1998 Olivier A. D. Lebaillif
6 *
7 * Email: olivier.lebaillif@ifrsys.com
8 *
9 */
10#ifndef DZ_SERIAL_H
11#define DZ_SERIAL_H
12
13/*
14 * Definitions for the Control and Status Received.
15 */
16#define DZ_TRDY 0x8000 /* Transmitter empty */
17#define DZ_TIE 0x4000 /* Transmitter Interrupt Enable */
18#define DZ_RDONE 0x0080 /* Receiver data ready */
19#define DZ_RIE 0x0040 /* Receive Interrupt Enable */
20#define DZ_MSE 0x0020 /* Master Scan Enable */
21#define DZ_CLR 0x0010 /* Master reset */
22#define DZ_MAINT 0x0008 /* Loop Back Mode */
23
24/*
25 * Definitions for the Received buffer.
26 */
27#define DZ_RBUF_MASK 0x00FF /* Data Mask in the Receive Buffer */
28#define DZ_LINE_MASK 0x0300 /* Line Mask in the Receive Buffer */
29#define DZ_DVAL 0x8000 /* Valid Data indicator */
30#define DZ_OERR 0x4000 /* Overrun error indicator */
31#define DZ_FERR 0x2000 /* Frame error indicator */
32#define DZ_PERR 0x1000 /* Parity error indicator */
33
34#define LINE(x) (x & DZ_LINE_MASK) >> 8 /* Get the line number from the input buffer */
35#define UCHAR(x) (unsigned char)(x & DZ_RBUF_MASK)
36
37/*
38 * Definitions for the Transmit Register.
39 */
40#define DZ_LINE_KEYBOARD 0x0001
41#define DZ_LINE_MOUSE 0x0002
42#define DZ_LINE_MODEM 0x0004
43#define DZ_LINE_PRINTER 0x0008
44
45#define DZ_MODEM_DTR 0x0400 /* DTR for the modem line (2) */
46
47/*
48 * Definitions for the Modem Status Register.
49 */
50#define DZ_MODEM_DSR 0x0200 /* DSR for the modem line (2) */
51
52/*
53 * Definitions for the Transmit Data Register.
54 */
55#define DZ_BRK0 0x0100 /* Break assertion for line 0 */
56#define DZ_BRK1 0x0200 /* Break assertion for line 1 */
57#define DZ_BRK2 0x0400 /* Break assertion for line 2 */
58#define DZ_BRK3 0x0800 /* Break assertion for line 3 */
59
60/*
61 * Definitions for the Line Parameter Register.
62 */
63#define DZ_KEYBOARD 0x0000 /* line 0 = keyboard */
64#define DZ_MOUSE 0x0001 /* line 1 = mouse */
65#define DZ_MODEM 0x0002 /* line 2 = modem */
66#define DZ_PRINTER 0x0003 /* line 3 = printer */
67
68#define DZ_CSIZE 0x0018 /* Number of bits per byte (mask) */
69#define DZ_CS5 0x0000 /* 5 bits per byte */
70#define DZ_CS6 0x0008 /* 6 bits per byte */
71#define DZ_CS7 0x0010 /* 7 bits per byte */
72#define DZ_CS8 0x0018 /* 8 bits per byte */
73
74#define DZ_CSTOPB 0x0020 /* 2 stop bits instead of one */
75
76#define DZ_PARENB 0x0040 /* Parity enable */
77#define DZ_PARODD 0x0080 /* Odd parity instead of even */
78
79#define DZ_CBAUD 0x0E00 /* Baud Rate (mask) */
80#define DZ_B50 0x0000
81#define DZ_B75 0x0100
82#define DZ_B110 0x0200
83#define DZ_B134 0x0300
84#define DZ_B150 0x0400
85#define DZ_B300 0x0500
86#define DZ_B600 0x0600
87#define DZ_B1200 0x0700
88#define DZ_B1800 0x0800
89#define DZ_B2000 0x0900
90#define DZ_B2400 0x0A00
91#define DZ_B3600 0x0B00
92#define DZ_B4800 0x0C00
93#define DZ_B7200 0x0D00
94#define DZ_B9600 0x0E00
95
96#define DZ_CREAD 0x1000 /* Enable receiver */
97#define DZ_RXENAB 0x1000 /* enable receive char */
98/*
99 * Addresses for the DZ registers
100 */
101#define DZ_CSR 0x00 /* Control and Status Register */
102#define DZ_RBUF 0x08 /* Receive Buffer */
103#define DZ_LPR 0x08 /* Line Parameters Register */
104#define DZ_TCR 0x10 /* Transmitter Control Register */
105#define DZ_MSR 0x18 /* Modem Status Register */
106#define DZ_TDR 0x18 /* Transmit Data Register */
107
108#define DZ_NB_PORT 4
109
110#define DZ_XMIT_SIZE 4096 /* buffer size */
111#define DZ_WAKEUP_CHARS DZ_XMIT_SIZE/4
112
113#ifdef MODULE
114int init_module (void)
115void cleanup_module (void)
116#endif
117
118#endif /* DZ_SERIAL_H */