drivers/char/specialix_io8.h

   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
  47 more 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
  92 struct 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
 108 struct specialix_port {
 109         int                     magic;
 110         int                     baud_base;
 111         int                     flags;
 112         struct tty_struct       * tty;
 113         int                     count;
 114         int                     blocked_open;
 115         ulong                   event;
 116         int                     timeout;
 117         int                     close_delay;
 118         unsigned char           * xmit_buf;
 119         int                     custom_divisor;
 120         int                     xmit_head;
 121         int                     xmit_tail;
 122         int                     xmit_cnt;
 123         wait_queue_head_t       open_wait;
 124         wait_queue_head_t       close_wait;
 125         struct work_struct      tqueue;
 126         struct work_struct      tqueue_hangup;
 127         short                   wakeup_chars;
 128         short                   break_length;
 129         unsigned short          closing_wait;
 130         unsigned char           mark_mask;
 131         unsigned char           IER;
 132         unsigned char           MSVR;
 133         unsigned char           COR2;
 134         unsigned long           overrun;
 135         unsigned long           hits[10];
 136         spinlock_t lock;
 137 };
 138
 139 #endif /* __KERNEL__ */
 140 #endif /* __LINUX_SPECIALIX_H */
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