1 /*
2 * linux/drivers/char/specialix_io8.h --
3 * Specialix IO8+ multiport serial driver.
4 *
5 * Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl)
6 * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com)
7 *
8 *
9 * Specialix pays for the development and support of this driver.
10 * Please DO contact io8-linux@specialix.co.uk if you require
11 * support.
12 *
13 * This driver was developped in the BitWizard linux device
14 * driver service. If you require a linux device driver for your
15 * product, please contact devices@BitWizard.nl for a quote.
16 *
17 * This code is firmly based on the riscom/8 serial driver,
18 * written by Dmitry Gorodchanin. The specialix IO8+ card
19 * programming information was obtained from the CL-CD1865 Data
20 * Book, and Specialix document number 6200059: IO8+ Hardware
21 * Functional Specification.
22 *
23 * This program is free software; you can redistribute it and/or
24 * modify it under the terms of the GNU General Public License as
25 * published by the Free Software Foundation; either version 2 of
26 * the License, or (at your option) any later version.
27 *
28 * This program is distributed in the hope that it will be
29 * useful, but WITHOUT ANY WARRANTY; without even the implied
30 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
31 * PURPOSE. See the GNU General Public License for more details.
32 *
33 * You should have received a copy of the GNU General Public
34 * License along with this program; if not, write to the Free
35 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
36 * USA.
37 * */
38
39 #ifndef __LINUX_SPECIALIX_H
40 #define __LINUX_SPECIALIX_H
41
42 #include <linux/serial.h>
43
44 #ifdef __KERNEL__
45
46 /* You can have max 4 ISA cards in one PC, and I recommend not much
47 more than a few PCI versions of the card. */
48
49 #define SX_NBOARD 8
50
51 /* NOTE: Specialix decoder recognizes 4 addresses, but only two are used.... */
52 #define SX_IO_SPACE 4
53 /* The PCI version decodes 8 addresses, but still only 2 are used. */
54 #define SX_PCI_IO_SPACE 8
55
56 /* eight ports per board. */
57 #define SX_NPORT 8
58 #define SX_BOARD(line) ((line) / SX_NPORT)
59 #define SX_PORT(line) ((line) & (SX_NPORT - 1))
60
61
62 #define SX_DATA_REG 0 /* Base+0 : Data register */
63 #define SX_ADDR_REG 1 /* base+1 : Address register. */
64
65 #define MHz *1000000 /* I'm ashamed of myself. */
66
67 /* On-board oscillator frequency */
68 #define SX_OSCFREQ (25 MHz/2)
69 /* There is a 25MHz crystal on the board, but the chip is in /2 mode */
70
71
72 /* Ticks per sec. Used for setting receiver timeout and break length */
73 #define SPECIALIX_TPS 4000
74
75 /* Yeah, after heavy testing I decided it must be 6.
76 * Sure, You can change it if needed.
77 */
78 #define SPECIALIX_RXFIFO 6 /* Max. receiver FIFO size (1-8) */
79
80 #define SPECIALIX_MAGIC 0x0907
81
82 #define SX_CCR_TIMEOUT 10000 /* CCR timeout. You may need to wait upto
83 10 milliseconds before the internal
84 processor is available again after
85 you give it a command */
86
87 #define SX_IOBASE1 0x100
88 #define SX_IOBASE2 0x180
89 #define SX_IOBASE3 0x250
90 #define SX_IOBASE4 0x260
91
92 struct specialix_board {
93 unsigned long flags;
94 unsigned short base;
95 unsigned char irq;
96 //signed char count;
97 int count;
98 unsigned char DTR;
99 int reg;
100 spinlock_t lock;
101 };
102
103 #define SX_BOARD_PRESENT 0x00000001
104 #define SX_BOARD_ACTIVE 0x00000002
105 #define SX_BOARD_IS_PCI 0x00000004
106
107
108 struct specialix_port {
109 int magic;
110 struct tty_port port;
111 int baud_base;
112 int flags;
113 int timeout;
114 unsigned char * xmit_buf;
115 int custom_divisor;
116 int xmit_head;
117 int xmit_tail;
118 int xmit_cnt;
119 short wakeup_chars;
120 short break_length;
121 unsigned char mark_mask;
122 unsigned char IER;
123 unsigned char MSVR;
124 unsigned char COR2;
125 unsigned long overrun;
126 unsigned long hits[10];
127 spinlock_t lock;
128 };
129
130 #endif /* __KERNEL__ */
131 #endif /* __LINUX_SPECIALIX_H */
132
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