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 developed 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 up to 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 struct tty_port port; 111 int baud_base; 112 int flags; 113 int timeout; 114 unsigned char * xmit_buf; 115 int custom_divisor; 116 int xmit_head; 117 int xmit_tail; 118 int xmit_cnt; 119 short wakeup_chars; 120 short break_length; 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 */ 132 133 134 135 136 137 138 139 140 141