2 * linux/drivers/char/specialix_io8.h --
3 * Specialix IO8+ multiport serial driver.
5 * Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl)
6 * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com)
9 * Specialix pays for the development and support of this driver.
10 * Please DO contact io8-linux@specialix.co.uk if you require
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.
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.
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.
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.
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,
39 #ifndef __LINUX_SPECIALIX_H
40 #define __LINUX_SPECIALIX_H
42 #include <linux/serial.h>
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. */
51 /* NOTE: Specialix decoder recognizes 4 addresses, but only two are used.... */
53 /* The PCI version decodes 8 addresses, but still only 2 are used. */
54 #define SX_PCI_IO_SPACE 8
56 /* eight ports per board. */
58 #define SX_BOARD(line) ((line) / SX_NPORT)
59 #define SX_PORT(line) ((line) & (SX_NPORT - 1))
62 #define SX_DATA_REG 0 /* Base+0 : Data register */
63 #define SX_ADDR_REG 1 /* base+1 : Address register. */
65 #define MHz *1000000 /* I'm ashamed of myself. */
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 */
72 /* Ticks per sec. Used for setting receiver timeout and break length */
73 #define SPECIALIX_TPS 4000
75 /* Yeah, after heavy testing I decided it must be 6.
76 * Sure, You can change it if needed.
78 #define SPECIALIX_RXFIFO 6 /* Max. receiver FIFO size (1-8) */
80 #define SPECIALIX_MAGIC 0x0907
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 */
87 #define SX_IOBASE1 0x100
88 #define SX_IOBASE2 0x180
89 #define SX_IOBASE3 0x250
90 #define SX_IOBASE4 0x260
92 struct specialix_board {
103 #define SX_BOARD_PRESENT 0x00000001
104 #define SX_BOARD_ACTIVE 0x00000002
105 #define SX_BOARD_IS_PCI 0x00000004
108 struct specialix_port {
112 struct tty_struct * tty;
117 unsigned char * xmit_buf;
122 wait_queue_head_t open_wait;
123 wait_queue_head_t close_wait;
126 unsigned short closing_wait;
127 unsigned char mark_mask;
131 unsigned long overrun;
132 unsigned long hits[10];
136 #endif /* __KERNEL__ */
137 #endif /* __LINUX_SPECIALIX_H */