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
47more 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
92struct 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
108struct specialix_port {
109	int			magic;
110	int			baud_base;
111	int			flags;
112	struct tty_struct 	* tty;
113	int			count;
114	int			blocked_open;
115	ulong			event;
116	int			timeout;
117	int			close_delay;
118	unsigned char 		* xmit_buf;
119	int			custom_divisor;
120	int			xmit_head;
121	int			xmit_tail;
122	int			xmit_cnt;
123	wait_queue_head_t	open_wait;
124	wait_queue_head_t	close_wait;
125	struct work_struct	tqueue;
126	struct work_struct	tqueue_hangup;
127	short			wakeup_chars;
128	short			break_length;
129	unsigned short		closing_wait;
130	unsigned char		mark_mask;
131	unsigned char		IER;
132	unsigned char		MSVR;
133	unsigned char		COR2;
134	unsigned long		overrun;
135	unsigned long		hits[10];
136	spinlock_t lock;
137};
138
139#endif /* __KERNEL__ */
140#endif /* __LINUX_SPECIALIX_H */
141