1/*
2 * dz.h: Serial port driver for DECstations equipped
3 *       with the DZ chipset.
4 *
5 * Copyright (C) 1998 Olivier A. D. Lebaillif
6 *
7 * Email: olivier.lebaillif@ifrsys.com
8 *
9 * Copyright (C) 2004, 2006  Maciej W. Rozycki
10 */
11#ifndef DZ_SERIAL_H
12#define DZ_SERIAL_H
13
14/*
15 * Definitions for the Control and Status Register.
16 */
17#define DZ_TRDY        0x8000                 /* Transmitter empty */
18#define DZ_TIE         0x4000                 /* Transmitter Interrupt Enbl */
19#define DZ_TLINE       0x0300                 /* Transmitter Line Number */
20#define DZ_RDONE       0x0080                 /* Receiver data ready */
21#define DZ_RIE         0x0040                 /* Receive Interrupt Enable */
22#define DZ_MSE         0x0020                 /* Master Scan Enable */
23#define DZ_CLR         0x0010                 /* Master reset */
24#define DZ_MAINT       0x0008                 /* Loop Back Mode */
25
26/*
27 * Definitions for the Receiver Buffer Register.
28 */
29#define DZ_RBUF_MASK   0x00FF                 /* Data Mask */
30#define DZ_LINE_MASK   0x0300                 /* Line Mask */
31#define DZ_DVAL        0x8000                 /* Valid Data indicator */
32#define DZ_OERR        0x4000                 /* Overrun error indicator */
33#define DZ_FERR        0x2000                 /* Frame error indicator */
34#define DZ_PERR        0x1000                 /* Parity error indicator */
35
36#define LINE(x) ((x & DZ_LINE_MASK) >> 8)     /* Get the line number
37                                                 from the input buffer */
38#define UCHAR(x) ((unsigned char)(x & DZ_RBUF_MASK))
39
40/*
41 * Definitions for the Transmit Control Register.
42 */
43#define DZ_LINE_KEYBOARD 0x0001
44#define DZ_LINE_MOUSE    0x0002
45#define DZ_LINE_MODEM    0x0004
46#define DZ_LINE_PRINTER  0x0008
47
48#define DZ_MODEM_RTS     0x0800               /* RTS for the modem line (2) */
49#define DZ_MODEM_DTR     0x0400               /* DTR for the modem line (2) */
50#define DZ_PRINT_RTS     0x0200               /* RTS for the prntr line (3) */
51#define DZ_PRINT_DTR     0x0100               /* DTR for the prntr line (3) */
52#define DZ_LNENB         0x000f               /* Transmitter Line Enable */
53
54/*
55 * Definitions for the Modem Status Register.
56 */
57#define DZ_MODEM_RI      0x0800               /* RI for the modem line (2) */
58#define DZ_MODEM_CD      0x0400               /* CD for the modem line (2) */
59#define DZ_MODEM_DSR     0x0200               /* DSR for the modem line (2) */
60#define DZ_MODEM_CTS     0x0100               /* CTS for the modem line (2) */
61#define DZ_PRINT_RI      0x0008               /* RI for the printer line (3) */
62#define DZ_PRINT_CD      0x0004               /* CD for the printer line (3) */
63#define DZ_PRINT_DSR     0x0002               /* DSR for the prntr line (3) */
64#define DZ_PRINT_CTS     0x0001               /* CTS for the prntr line (3) */
65
66/*
67 * Definitions for the Transmit Data Register.
68 */
69#define DZ_BRK0          0x0100               /* Break assertion for line 0 */
70#define DZ_BRK1          0x0200               /* Break assertion for line 1 */
71#define DZ_BRK2          0x0400               /* Break assertion for line 2 */
72#define DZ_BRK3          0x0800               /* Break assertion for line 3 */
73
74/*
75 * Definitions for the Line Parameter Register.
76 */
77#define DZ_KEYBOARD      0x0000               /* line 0 = keyboard */
78#define DZ_MOUSE         0x0001               /* line 1 = mouse */
79#define DZ_MODEM         0x0002               /* line 2 = modem */
80#define DZ_PRINTER       0x0003               /* line 3 = printer */
81
82#define DZ_CSIZE         0x0018               /* Number of bits per byte (mask) */
83#define DZ_CS5           0x0000               /* 5 bits per byte */
84#define DZ_CS6           0x0008               /* 6 bits per byte */
85#define DZ_CS7           0x0010               /* 7 bits per byte */
86#define DZ_CS8           0x0018               /* 8 bits per byte */
87
88#define DZ_CSTOPB        0x0020               /* 2 stop bits instead of one */
89
90#define DZ_PARENB        0x0040               /* Parity enable */
91#define DZ_PARODD        0x0080               /* Odd parity instead of even */
92
93#define DZ_CBAUD         0x0E00               /* Baud Rate (mask) */
94#define DZ_B50           0x0000
95#define DZ_B75           0x0100
96#define DZ_B110          0x0200
97#define DZ_B134          0x0300
98#define DZ_B150          0x0400
99#define DZ_B300          0x0500
100#define DZ_B600          0x0600
101#define DZ_B1200         0x0700
102#define DZ_B1800         0x0800
103#define DZ_B2000         0x0900
104#define DZ_B2400         0x0A00
105#define DZ_B3600         0x0B00
106#define DZ_B4800         0x0C00
107#define DZ_B7200         0x0D00
108#define DZ_B9600         0x0E00
109
110#define DZ_CREAD         0x1000               /* Enable receiver */
111#define DZ_RXENAB        0x1000               /* enable receive char */
112/*
113 * Addresses for the DZ registers
114 */
115#define DZ_CSR       0x00            /* Control and Status Register */
116#define DZ_RBUF      0x08            /* Receive Buffer */
117#define DZ_LPR       0x08            /* Line Parameters Register */
118#define DZ_TCR       0x10            /* Transmitter Control Register */
119#define DZ_MSR       0x18            /* Modem Status Register */
120#define DZ_TDR       0x18            /* Transmit Data Register */
121
122#define DZ_NB_PORT 4
123
124#define DZ_XMIT_SIZE   4096                 /* buffer size */
125#define DZ_WAKEUP_CHARS   DZ_XMIT_SIZE/4
126
127#ifdef MODULE
128int init_module (void)
129void cleanup_module (void)
130#endif
131
132#endif /* DZ_SERIAL_H */
133