1/*
2 *      linux/drivers/char/riscom8.h  -- RISCom/8 multiport serial driver.
3 *
4 *      Copyright (C) 1994-1996  Dmitry Gorodchanin (pgmdsg@ibi.com)
5 *
6 *      This code is loosely based on the Linux serial driver, written by
7 *      Linus Torvalds, Theodore T'so and others. The RISCom/8 card
8 *      programming info was obtained from various drivers for other OSes
9 *	(FreeBSD, ISC, etc), but no source code from those drivers were
10 *	directly included in this driver.
11 *
12 *
13 *      This program is free software; you can redistribute it and/or modify
14 *      it under the terms of the GNU General Public License as published by
15 *      the Free Software Foundation; either version 2 of the License, or
16 *      (at your option) any later version.
17 *
18 *      This program is distributed in the hope that it will be useful,
19 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
20 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21 *      GNU General Public License for more details.
22 *
23 *      You should have received a copy of the GNU General Public License
24 *      along with this program; if not, write to the Free Software
25 *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28#ifndef __LINUX_RISCOM8_H
29#define __LINUX_RISCOM8_H
30
31#include <linux/serial.h>
32
33#ifdef __KERNEL__
34
35#define RC_NBOARD		4
36/* NOTE: RISCom decoder recognizes 16 addresses... */
37#define RC_NPORT        	8
38#define RC_BOARD(line)		(((line) >> 3) & 0x07)
39#define RC_PORT(line)		((line) & (RC_NPORT - 1))
40
41/* Ticks per sec. Used for setting receiver timeout and break length */
42#define RISCOM_TPS		4000
43
44/* Yeah, after heavy testing I decided it must be 6.
45 * Sure, You can change it if needed.
46 */
47#define RISCOM_RXFIFO		6	/* Max. receiver FIFO size (1-8) */
48
49#define RISCOM8_MAGIC		0x0907
50
51#define RC_IOBASE1	0x220
52#define RC_IOBASE2	0x240
53#define RC_IOBASE3	0x250
54#define RC_IOBASE4	0x260
55
56struct riscom_board {
57	unsigned long   flags;
58	unsigned short	base;
59	unsigned char 	irq;
60	signed   char	count;
61	unsigned char	DTR;
62};
63
64#define RC_BOARD_PRESENT	0x00000001
65#define RC_BOARD_ACTIVE		0x00000002
66
67struct riscom_port {
68	int			magic;
69	int			baud_base;
70	int			flags;
71	struct tty_struct 	* tty;
72	int			count;
73	int			blocked_open;
74	long			event; /* long req'd for set_bit --RR */
75	int			timeout;
76	int			close_delay;
77	unsigned char 		* xmit_buf;
78	int			custom_divisor;
79	int			xmit_head;
80	int			xmit_tail;
81	int			xmit_cnt;
82	wait_queue_head_t	open_wait;
83	wait_queue_head_t	close_wait;
84	struct work_struct	tqueue;
85	struct work_struct	tqueue_hangup;
86	short			wakeup_chars;
87	short			break_length;
88	unsigned short		closing_wait;
89	unsigned char		mark_mask;
90	unsigned char		IER;
91	unsigned char		MSVR;
92	unsigned char		COR2;
93#ifdef RC_REPORT_OVERRUN
94	unsigned long		overrun;
95#endif
96#ifdef RC_REPORT_FIFO
97	unsigned long		hits[10];
98#endif
99};
100
101#endif /* __KERNEL__ */
102#endif /* __LINUX_RISCOM8_H */
103