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 struct tty_port port; 70 int baud_base; 71 int timeout; 72 int custom_divisor; 73 int xmit_head; 74 int xmit_tail; 75 int xmit_cnt; 76 short wakeup_chars; 77 short break_length; 78 unsigned char mark_mask; 79 unsigned char IER; 80 unsigned char MSVR; 81 unsigned char COR2; 82 #ifdef RC_REPORT_OVERRUN 83 unsigned long overrun; 84 #endif 85 #ifdef RC_REPORT_FIFO 86 unsigned long hits[10]; 87 #endif 88 }; 89 90 #endif /* __KERNEL__ */ 91 #endif /* __LINUX_RISCOM8_H */ 92