drivers/char/riscom8.h

   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 */