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riscom8.h

/*
 *      linux/drivers/char/riscom8.h  -- RISCom/8 multiport serial driver.
 *
 *      Copyright (C) 1994-1996  Dmitry Gorodchanin (pgmdsg@ibi.com)
 *
 *      This code is loosely based on the Linux serial driver, written by
 *      Linus Torvalds, Theodore T'so and others. The RISCom/8 card 
 *      programming info was obtained from various drivers for other OSes 
 *    (FreeBSD, ISC, etc), but no source code from those drivers were 
 *    directly included in this driver.
 *
 *
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License as published by
 *      the Free Software Foundation; either version 2 of the License, or
 *      (at your option) any later version.
 *
 *      This program is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU General Public License for more details.
 *
 *      You should have received a copy of the GNU General Public License
 *      along with this program; if not, write to the Free Software
 *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef __LINUX_RISCOM8_H
#define __LINUX_RISCOM8_H

#include <linux/serial.h>

#ifdef __KERNEL__

#define RC_NBOARD       4
/* NOTE: RISCom decoder recognizes 16 addresses... */
#define RC_NPORT              8  
#define RC_BOARD(line)        (((line) >> 3) & 0x07)
#define RC_PORT(line)         ((line) & (RC_NPORT - 1))

/* Ticks per sec. Used for setting receiver timeout and break length */
#define RISCOM_TPS            4000

/* Yeah, after heavy testing I decided it must be 6.
 * Sure, You can change it if needed.
 */
#define RISCOM_RXFIFO         6     /* Max. receiver FIFO size (1-8) */

#define RISCOM8_MAGIC         0x0907

#define RC_IOBASE1      0x220
#define RC_IOBASE2      0x240
#define RC_IOBASE3      0x250
#define RC_IOBASE4      0x260

struct riscom_board {
      unsigned long   flags;
      unsigned short    base;
      unsigned char     irq;
      signed   char     count;
      unsigned char     DTR;
};

#define RC_BOARD_PRESENT      0x00000001
#define RC_BOARD_ACTIVE       0x00000002
      
struct riscom_port {
      int               magic;
      int               baud_base;
      int               flags;
      struct tty_struct       * tty;
      int               count;
      int               blocked_open;
      unsigned long           event; /* long req'd for set_bit --RR */
      int               timeout;
      int               close_delay;
      unsigned char           * xmit_buf;
      int               custom_divisor;
      int               xmit_head;
      int               xmit_tail;
      int               xmit_cnt;
      wait_queue_head_t open_wait;
      wait_queue_head_t close_wait;
      struct work_struct      tqueue;
      struct work_struct      tqueue_hangup;
      short             wakeup_chars;
      short             break_length;
      unsigned short          closing_wait;
      unsigned char           mark_mask;
      unsigned char           IER;
      unsigned char           MSVR;
      unsigned char           COR2;
#ifdef RC_REPORT_OVERRUN
      unsigned long           overrun;
#endif      
#ifdef RC_REPORT_FIFO
      unsigned long           hits[10];
#endif
};

#endif /* __KERNEL__ */
#endif /* __LINUX_RISCOM8_H */

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