LXR linux/include/linux/generic

   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#ifdef __KERNEL__
  16#include <linux/mutex.h>
  17
  18struct 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
  34struct gs_port {
  35  int                     magic;
  36  unsigned char           *xmit_buf; 
  37  int                     xmit_head;
  38  int                     xmit_tail;
  39  int                     xmit_cnt;
  40  struct mutex            port_write_mutex;
  41  int                     flags;
  42  wait_queue_head_t       open_wait;
  43  wait_queue_head_t       close_wait;
  44  int                     count;
  45  int                     blocked_open;
  46  struct tty_struct       *tty;
  47  unsigned long           event;
  48  unsigned short          closing_wait;
  49  int                     close_delay;
  50  struct real_driver      *rd;
  51  int                     wakeup_chars;
  52  int                     baud_base;
  53  int                     baud;
  54  int                     custom_divisor;
  55  spinlock_t              driver_lock;
  56};
  57
  58#endif /* __KERNEL__ */
  59
  60/* Flags */
  61/* Warning: serial.h defines some ASYNC_ flags, they say they are "only"
  62   used in serial.c, but they are also used in all other serial drivers. 
  63   Make sure they don't clash with these here... */
  64#define GS_TX_INTEN      0x00800000
  65#define GS_RX_INTEN      0x00400000
  66#define GS_ACTIVE        0x00200000
  67
  68
  69
  70#define GS_TYPE_NORMAL   1
  71
  72#define GS_DEBUG_FLUSH   0x00000001
  73#define GS_DEBUG_BTR     0x00000002
  74#define GS_DEBUG_TERMIOS 0x00000004
  75#define GS_DEBUG_STUFF   0x00000008
  76#define GS_DEBUG_CLOSE   0x00000010
  77#define GS_DEBUG_FLOW    0x00000020
  78#define GS_DEBUG_WRITE   0x00000040
  79
  80#ifdef __KERNEL__
  81void gs_put_char(struct tty_struct *tty, unsigned char ch);
  82int  gs_write(struct tty_struct *tty, 
  83             const unsigned char *buf, int count);
  84int  gs_write_room(struct tty_struct *tty);
  85int  gs_chars_in_buffer(struct tty_struct *tty);
  86void gs_flush_buffer(struct tty_struct *tty);
  87void gs_flush_chars(struct tty_struct *tty);
  88void gs_stop(struct tty_struct *tty);
  89void gs_start(struct tty_struct *tty);
  90void gs_hangup(struct tty_struct *tty);
  91int  gs_block_til_ready(void *port, struct file *filp);
  92void gs_close(struct tty_struct *tty, struct file *filp);
  93void gs_set_termios (struct tty_struct * tty, 
  94                     struct ktermios * old_termios);
  95int  gs_init_port(struct gs_port *port);
  96int  gs_setserial(struct gs_port *port, struct serial_struct __user *sp);
  97int  gs_getserial(struct gs_port *port, struct serial_struct __user *sp);
  98void gs_got_break(struct gs_port *port);
  99#endif /* __KERNEL__ */
 100#endif
 101