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/*

 *      linux/drivers/char/specialix_io8.h  --

 *                                   Specialix IO8+ multiport serial driver.

 *

 *      Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl)

 *      Copyright (C) 1994-1996  Dmitry Gorodchanin (pgmdsg@ibi.com)

 *

 *

 *      Specialix pays for the development and support of this driver.

 *      Please DO contact io8-linux@specialix.co.uk if you require

 *      support.

 *

 *      This driver was developped in the BitWizard linux device

 *      driver service. If you require a linux device driver for your

 *      product, please contact devices@BitWizard.nl for a quote.

 *

 *      This code is firmly based on the riscom/8 serial driver,

 *      written by Dmitry Gorodchanin. The specialix IO8+ card

 *      programming information was obtained from the CL-CD1865 Data

 *      Book, and Specialix document number 6200059: IO8+ Hardware

 *      Functional Specification.

 *

 *      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_SPECIALIX_H

#define __LINUX_SPECIALIX_H

#include <linux/serial.h>

#ifdef __KERNEL__

/* You can have max 4 ISA cards in one PC, and I recommend not much

more than a few  PCI versions of the card. */

#define SX_NBOARD               8

/* NOTE: Specialix decoder recognizes 4 addresses, but only two are used.... */

#define SX_IO_SPACE             4

/* The PCI version decodes 8 addresses, but still only 2 are used. */

#define SX_PCI_IO_SPACE         8

/* eight ports per board. */

#define SX_NPORT                8

#define SX_BOARD(line)          ((line) / SX_NPORT)

#define SX_PORT(line)           ((line) & (SX_NPORT - 1))

#define SX_DATA_REG 0     /* Base+0 : Data register */

#define SX_ADDR_REG 1     /* base+1 : Address register. */

#define MHz *1000000    /* I'm ashamed of myself. */

/* On-board oscillator frequency */

#define SX_OSCFREQ      (25 MHz/2)

/* There is a 25MHz crystal on the board, but the chip is in /2 mode */

/* Ticks per sec. Used for setting receiver timeout and break length */

#define SPECIALIX_TPS           4000

/* Yeah, after heavy testing I decided it must be 6.

 * Sure, You can change it if needed.

 */

#define SPECIALIX_RXFIFO        6       /* Max. receiver FIFO size (1-8) */

#define SPECIALIX_MAGIC         0x0907

#define SX_CCR_TIMEOUT 10000   /* CCR timeout. You may need to wait upto

                                  10 milliseconds before the internal

                                  processor is available again after

                                  you give it a command */

#define SX_IOBASE1      0x100

#define SX_IOBASE2      0x180

#define SX_IOBASE3      0x250

#define SX_IOBASE4      0x260

struct specialix_board {

        unsigned long   flags;

        unsigned short  base;

        unsigned char   irq;

        signed   char   count;

        unsigned char   DTR;

        int reg;

};

#define SX_BOARD_PRESENT        0x00000001

#define SX_BOARD_ACTIVE         0x00000002

#define SX_BOARD_IS_PCI         0x00000004

struct specialix_port {

        int                     magic;

        int                     baud_base;

        int                     flags;

        struct tty_struct       * tty;

        int                     count;

        int                     blocked_open;

        int                     event;

        int                     timeout;

        int                     close_delay;

        long                    session;

        long                    pgrp;

        unsigned char           * xmit_buf;

        int                     custom_divisor;

        int                     xmit_head;

        int                     xmit_tail;

        int                     xmit_cnt;

        struct termios          normal_termios;

        struct termios          callout_termios;

        struct wait_queue       *open_wait;

        struct wait_queue       *close_wait;

        struct tq_struct        tqueue;

        struct tq_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 SX_REPORT_OVERRUN

        unsigned long           overrun;

#endif  

#ifdef SX_REPORT_FIFO

        unsigned long           hits[10];

#endif

};

#endif /* __KERNEL__ */

#endif /* __LINUX_SPECIALIX_H */