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1da177e4 LT |
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 | ||
56 | struct 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 | ||
67 | struct riscom_port { | |
68 | int magic; | |
69 | int baud_base; | |
70 | int flags; | |
71 | struct tty_struct * tty; | |
72 | int count; | |
73 | int blocked_open; | |
1da177e4 LT |
74 | int timeout; |
75 | int close_delay; | |
76 | unsigned char * xmit_buf; | |
77 | int custom_divisor; | |
78 | int xmit_head; | |
79 | int xmit_tail; | |
80 | int xmit_cnt; | |
81 | wait_queue_head_t open_wait; | |
82 | wait_queue_head_t close_wait; | |
1da177e4 LT |
83 | short wakeup_chars; |
84 | short break_length; | |
85 | unsigned short closing_wait; | |
86 | unsigned char mark_mask; | |
87 | unsigned char IER; | |
88 | unsigned char MSVR; | |
89 | unsigned char COR2; | |
90 | #ifdef RC_REPORT_OVERRUN | |
91 | unsigned long overrun; | |
92 | #endif | |
93 | #ifdef RC_REPORT_FIFO | |
94 | unsigned long hits[10]; | |
95 | #endif | |
96 | }; | |
97 | ||
98 | #endif /* __KERNEL__ */ | |
99 | #endif /* __LINUX_RISCOM8_H */ |