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1da177e4 LT |
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; | |
44b7d1b3 | 110 | struct tty_port port; |
1da177e4 LT |
111 | int baud_base; |
112 | int flags; | |
1da177e4 | 113 | int timeout; |
1da177e4 LT |
114 | unsigned char * xmit_buf; |
115 | int custom_divisor; | |
116 | int xmit_head; | |
117 | int xmit_tail; | |
118 | int xmit_cnt; | |
1da177e4 LT |
119 | short wakeup_chars; |
120 | short break_length; | |
1da177e4 LT |
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 | ||
133 | ||
134 | ||
135 | ||
136 | ||
137 | ||
138 | ||
139 | ||
140 |