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#include <linux/tty.h>
  18
  19struct real_driver {
  20  void                    (*disable_tx_interrupts) (void *);
  21  void                    (*enable_tx_interrupts) (void *);
  22  void                    (*disable_rx_interrupts) (void *);
  23  void                    (*enable_rx_interrupts) (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  struct tty_port         port;
  37  unsigned char           *xmit_buf; 
  38  int                     xmit_head;
  39  int                     xmit_tail;
  40  int                     xmit_cnt;
  41  struct mutex            port_write_mutex;
  42  unsigned long           event;
  43  unsigned short          closing_wait;
  44  int                     close_delay;
  45  struct real_driver      *rd;
  46  int                     wakeup_chars;
  47  int                     baud_base;
  48  int                     baud;
  49  int                     custom_divisor;
  50  spinlock_t              driver_lock;
  51};
  52
  53#endif /* __KERNEL__ */
  54
  55/* Flags */
  56/* Warning: serial.h defines some ASYNC_ flags, they say they are "only"
  57   used in serial.c, but they are also used in all other serial drivers. 
  58   Make sure they don't clash with these here... */
  59#define GS_TX_INTEN      0x00800000
  60#define GS_RX_INTEN      0x00400000
  61#define GS_ACTIVE        0x00200000
  62
  63
  64
  65#define GS_TYPE_NORMAL   1
  66
  67#define GS_DEBUG_FLUSH   0x00000001
  68#define GS_DEBUG_BTR     0x00000002
  69#define GS_DEBUG_TERMIOS 0x00000004
  70#define GS_DEBUG_STUFF   0x00000008
  71#define GS_DEBUG_CLOSE   0x00000010
  72#define GS_DEBUG_FLOW    0x00000020
  73#define GS_DEBUG_WRITE   0x00000040
  74
  75#ifdef __KERNEL__
  76int gs_put_char(struct tty_struct *tty, unsigned char ch);
  77int  gs_write(struct tty_struct *tty, 
  78             const unsigned char *buf, int count);
  79int  gs_write_room(struct tty_struct *tty);
  80int  gs_chars_in_buffer(struct tty_struct *tty);
  81void gs_flush_buffer(struct tty_struct *tty);
  82void gs_flush_chars(struct tty_struct *tty);
  83void gs_stop(struct tty_struct *tty);
  84void gs_start(struct tty_struct *tty);
  85void gs_hangup(struct tty_struct *tty);
  86int  gs_block_til_ready(void *port, struct file *filp);
  87void gs_close(struct tty_struct *tty, struct file *filp);
  88void gs_set_termios (struct tty_struct * tty, 
  89                     struct ktermios * old_termios);
  90int  gs_init_port(struct gs_port *port);
  91int  gs_setserial(struct gs_port *port, struct serial_struct __user *sp);
  92int  gs_getserial(struct gs_port *port, struct serial_struct __user *sp);
  93void gs_got_break(struct gs_port *port);
  94#endif /* __KERNEL__ */
  95#endif
  96