drivers/serial/mcfserial.h

   1 /*
   2  * mcfserial.c -- serial driver for ColdFire internal UARTS.
   3  *
   4  * Copyright (c) 1999 Greg Ungerer <gerg@snapgear.com>
   5  * Copyright (c) 2000-2001 Lineo, Inc. <www.lineo.com>
   6  * Copyright (c) 2002 SnapGear Inc., <www.snapgear.com>
   7  *
   8  * Based on code from 68332serial.c which was:
   9  *
  10  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
  11  * Copyright (C) 1998 TSHG
  12  * Copyright (c) 1999 Rt-Control Inc. <jeff@uclinux.org>
  13  */
  14 #ifndef _MCF_SERIAL_H
  15 #define _MCF_SERIAL_H
  16
  17 #include <linux/config.h>
  18 #include <linux/serial.h>
  19
  20 #ifdef __KERNEL__
  21
  22 /*
  23  *      Define a local serial stats structure.
  24  */
  25
  26 struct mcf_stats {
  27         unsigned int    rx;
  28         unsigned int    tx;
  29         unsigned int    rxbreak;
  30         unsigned int    rxframing;
  31         unsigned int    rxparity;
  32         unsigned int    rxoverrun;
  33 };
  34
  35
  36 /*
  37  * This is our internal structure for each serial port's state.
  38  * Each serial port has one of these structures associated with it.
  39  */
  40
  41 struct mcf_serial {
  42         int                     magic;
  43         volatile unsigned char  *addr;          /* UART memory address */
  44         int                     irq;
  45         int                     flags;          /* defined in tty.h */
  46         int                     type;           /* UART type */
  47         struct tty_struct       *tty;
  48         unsigned char           imr;            /* Software imr register */
  49         unsigned int            baud;
  50         int                     sigs;
  51         int                     custom_divisor;
  52         int                     x_char; /* xon/xoff character */
  53         int                     baud_base;
  54         int                     close_delay;
  55         unsigned short          closing_wait;
  56         unsigned short          closing_wait2;
  57         unsigned long           event;
  58         int                     line;
  59         int                     count;      /* # of fd on device */
  60         int                     blocked_open; /* # of blocked opens */
  61         unsigned char           *xmit_buf;
  62         int                     xmit_head;
  63         int                     xmit_tail;
  64         int                     xmit_cnt;
  65         struct mcf_stats        stats;
  66         struct work_struct      tqueue;
  67         struct work_struct      tqueue_hangup;
  68         wait_queue_head_t       open_wait;
  69         wait_queue_head_t       close_wait;
  70
  71 };
  72
  73 #endif /* __KERNEL__ */
  74
  75 #endif /* _MCF_SERIAL_H */