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 DZ_BREAK 0x0800 /* BREAK event software flag */
37
38 #define LINE(x) ((x & DZ_LINE_MASK) >> 8) /* Get the line number
39 from the input buffer */
40 #define UCHAR(x) ((unsigned char)(x & DZ_RBUF_MASK))
41
42 /*
43 * Definitions for the Transmit Control Register.
44 */
45 #define DZ_LINE_KEYBOARD 0x0001
46 #define DZ_LINE_MOUSE 0x0002
47 #define DZ_LINE_MODEM 0x0004
48 #define DZ_LINE_PRINTER 0x0008
49
50 #define DZ_MODEM_RTS 0x0800 /* RTS for the modem line (2) */
51 #define DZ_MODEM_DTR 0x0400 /* DTR for the modem line (2) */
52 #define DZ_PRINT_RTS 0x0200 /* RTS for the prntr line (3) */
53 #define DZ_PRINT_DTR 0x0100 /* DTR for the prntr line (3) */
54 #define DZ_LNENB 0x000f /* Transmitter Line Enable */
55
56 /*
57 * Definitions for the Modem Status Register.
58 */
59 #define DZ_MODEM_RI 0x0800 /* RI for the modem line (2) */
60 #define DZ_MODEM_CD 0x0400 /* CD for the modem line (2) */
61 #define DZ_MODEM_DSR 0x0200 /* DSR for the modem line (2) */
62 #define DZ_MODEM_CTS 0x0100 /* CTS for the modem line (2) */
63 #define DZ_PRINT_RI 0x0008 /* RI for the printer line (3) */
64 #define DZ_PRINT_CD 0x0004 /* CD for the printer line (3) */
65 #define DZ_PRINT_DSR 0x0002 /* DSR for the prntr line (3) */
66 #define DZ_PRINT_CTS 0x0001 /* CTS for the prntr line (3) */
67
68 /*
69 * Definitions for the Transmit Data Register.
70 */
71 #define DZ_BRK0 0x0100 /* Break assertion for line 0 */
72 #define DZ_BRK1 0x0200 /* Break assertion for line 1 */
73 #define DZ_BRK2 0x0400 /* Break assertion for line 2 */
74 #define DZ_BRK3 0x0800 /* Break assertion for line 3 */
75
76 /*
77 * Definitions for the Line Parameter Register.
78 */
79 #define DZ_KEYBOARD 0x0000 /* line 0 = keyboard */
80 #define DZ_MOUSE 0x0001 /* line 1 = mouse */
81 #define DZ_MODEM 0x0002 /* line 2 = modem */
82 #define DZ_PRINTER 0x0003 /* line 3 = printer */
83
84 #define DZ_CSIZE 0x0018 /* Number of bits per byte (mask) */
85 #define DZ_CS5 0x0000 /* 5 bits per byte */
86 #define DZ_CS6 0x0008 /* 6 bits per byte */
87 #define DZ_CS7 0x0010 /* 7 bits per byte */
88 #define DZ_CS8 0x0018 /* 8 bits per byte */
89
90 #define DZ_CSTOPB 0x0020 /* 2 stop bits instead of one */
91
92 #define DZ_PARENB 0x0040 /* Parity enable */
93 #define DZ_PARODD 0x0080 /* Odd parity instead of even */
94
95 #define DZ_CBAUD 0x0E00 /* Baud Rate (mask) */
96 #define DZ_B50 0x0000
97 #define DZ_B75 0x0100
98 #define DZ_B110 0x0200
99 #define DZ_B134 0x0300
100 #define DZ_B150 0x0400
101 #define DZ_B300 0x0500
102 #define DZ_B600 0x0600
103 #define DZ_B1200 0x0700
104 #define DZ_B1800 0x0800
105 #define DZ_B2000 0x0900
106 #define DZ_B2400 0x0A00
107 #define DZ_B3600 0x0B00
108 #define DZ_B4800 0x0C00
109 #define DZ_B7200 0x0D00
110 #define DZ_B9600 0x0E00
111
112 #define DZ_RXENAB 0x1000 /* Receiver Enable */
113
114 /*
115 * Addresses for the DZ registers
116 */
117 #define DZ_CSR 0x00 /* Control and Status Register */
118 #define DZ_RBUF 0x08 /* Receive Buffer */
119 #define DZ_LPR 0x08 /* Line Parameters Register */
120 #define DZ_TCR 0x10 /* Transmitter Control Register */
121 #define DZ_MSR 0x18 /* Modem Status Register */
122 #define DZ_TDR 0x18 /* Transmit Data Register */
123
124 #define DZ_NB_PORT 4
125
126 #define DZ_XMIT_SIZE 4096 /* buffer size */
127 #define DZ_WAKEUP_CHARS DZ_XMIT_SIZE/4
128
129 #endif /* DZ_SERIAL_H */
130
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