include/linux/generic_serial.h

   1 /*
   2  *  generic_serial.h
   3  *
   4  *  Copyright (C) 1998 R.E.Wolff@BitWizard.nl
   5  *
   6  *  written for the SX serial driver.
   7  *     Contains the code that should be shared over all the serial drivers.
   8  *
   9  *  Version 0.1 -- December, 1998.
  10  */
  11
  12 #ifndef GENERIC_SERIAL_H
  13 #define GENERIC_SERIAL_H
  14
  15
  16
  17
  18 struct real_driver {
  19   void                    (*disable_tx_interrupts) (void *);
  20   void                    (*enable_tx_interrupts) (void *);
  21   void                    (*disable_rx_interrupts) (void *);
  22   void                    (*enable_rx_interrupts) (void *);
  23   int                     (*get_CD) (void *);
  24   void                    (*shutdown_port) (void*);
  25   int                     (*set_real_termios) (void*);
  26   int                     (*chars_in_buffer) (void*);
  27   void                    (*close) (void*);
  28   void                    (*hungup) (void*);
  29   void                    (*getserial) (void*, struct serial_struct *sp);
  30 };
  31
  32
  33
  34 struct gs_port {
  35   int                     magic;
  36   unsigned char           *xmit_buf;
  37   int                     xmit_head;
  38   int                     xmit_tail;
  39   int                     xmit_cnt;
  40   /*  struct semaphore        port_write_sem; */
  41   int                     flags;
  42   struct termios          normal_termios;
  43   struct termios          callout_termios;
  44   wait_queue_head_t       open_wait;
  45   wait_queue_head_t       close_wait;
  46   long                    session;
  47   long                    pgrp;
  48   int                     count;
  49   int                     blocked_open;
  50   struct tty_struct       *tty;
  51   int                     event;
  52   unsigned short          closing_wait;
  53   int                     close_delay;
  54   struct real_driver      *rd;
  55   int                     wakeup_chars;
  56   int                     baud_base;
  57   int                     baud;
  58   int                     custom_divisor;
  59 };
  60
  61
  62 /* Flags */
  63 /* Warning: serial.h defines some ASYNC_ flags, they say they are "only"
  64    used in serial.c, but they are also used in all other serial drivers.
  65    Make sure they don't clash with these here... */
  66 #define GS_TX_INTEN      0x00800000
  67 #define GS_RX_INTEN      0x00400000
  68 #define GS_ACTIVE        0x00200000
  69
  70
  71
  72 #define GS_TYPE_NORMAL   1
  73 #define GS_TYPE_CALLOUT  2
  74
  75
  76 #define GS_DEBUG_FLUSH   0x00000001
  77 #define GS_DEBUG_BTR     0x00000002
  78 #define GS_DEBUG_TERMIOS 0x00000004
  79 #define GS_DEBUG_STUFF   0x00000008
  80 #define GS_DEBUG_CLOSE   0x00000010
  81 #define GS_DEBUG_FLOW    0x00000020
  82
  83
  84 void gs_put_char(struct tty_struct *tty, unsigned char ch);
  85 int  gs_write(struct tty_struct *tty, int from_user,
  86              const unsigned char *buf, int count);
  87 int  gs_write_room(struct tty_struct *tty);
  88 int  gs_chars_in_buffer(struct tty_struct *tty);
  89 void gs_flush_buffer(struct tty_struct *tty);
  90 void gs_flush_chars(struct tty_struct *tty);
  91 void gs_stop(struct tty_struct *tty);
  92 void gs_start(struct tty_struct *tty);
  93 void gs_hangup(struct tty_struct *tty);
  94 void gs_do_softint(void *private_);
  95 int  block_til_ready(void *port, struct file *filp);
  96 void gs_close(struct tty_struct *tty, struct file *filp);
  97 void gs_set_termios (struct tty_struct * tty,
  98                      struct termios * old_termios);
  99 int  gs_init_port(struct gs_port *port);
 100 int  gs_setserial(struct gs_port *port, struct serial_struct *sp);
 101 void gs_getserial(struct gs_port *port, struct serial_struct *sp);
 102
 103 extern int gs_debug;
 104
 105 #endif