LXR linux/drivers/char/specialix

   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 developped 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 upto
  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 */
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