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 struct real_driver {
  16   void                    (*disable_tx_interrupts) (void *);
  17   void                    (*enable_tx_interrupts) (void *);
  18   void                    (*disable_rx_interrupts) (void *);
  19   void                    (*enable_rx_interrupts) (void *);
  20   int                     (*get_CD) (void *);
  21   void                    (*shutdown_port) (void*);
  22   int                     (*set_real_termios) (void*);
  23   int                     (*chars_in_buffer) (void*);
  24   void                    (*close) (void*);
  25   void                    (*hungup) (void*);
  26   void                    (*getserial) (void*, struct serial_struct *sp);
  27 };
  28
  29
  30
  31 struct gs_port {
  32   int                     magic;
  33   unsigned char           *xmit_buf;
  34   int                     xmit_head;
  35   int                     xmit_tail;
  36   int                     xmit_cnt;
  37   struct semaphore        port_write_sem;
  38   int                     flags;
  39   wait_queue_head_t       open_wait;
  40   wait_queue_head_t       close_wait;
  41   int                     count;
  42   int                     blocked_open;
  43   struct tty_struct       *tty;
  44   unsigned long           event;
  45   unsigned short          closing_wait;
  46   int                     close_delay;
  47   struct real_driver      *rd;
  48   int                     wakeup_chars;
  49   int                     baud_base;
  50   int                     baud;
  51   int                     custom_divisor;
  52   spinlock_t              driver_lock;
  53 };
  54
  55
  56 /* Flags */
  57 /* Warning: serial.h defines some ASYNC_ flags, they say they are "only"
  58    used in serial.c, but they are also used in all other serial drivers.
  59    Make sure they don't clash with these here... */
  60 #define GS_TX_INTEN      0x00800000
  61 #define GS_RX_INTEN      0x00400000
  62 #define GS_ACTIVE        0x00200000
  63
  64
  65
  66 #define GS_TYPE_NORMAL   1
  67
  68 #define GS_DEBUG_FLUSH   0x00000001
  69 #define GS_DEBUG_BTR     0x00000002
  70 #define GS_DEBUG_TERMIOS 0x00000004
  71 #define GS_DEBUG_STUFF   0x00000008
  72 #define GS_DEBUG_CLOSE   0x00000010
  73 #define GS_DEBUG_FLOW    0x00000020
  74 #define GS_DEBUG_WRITE   0x00000040
  75
  76
  77 void gs_put_char(struct tty_struct *tty, unsigned char ch);
  78 int  gs_write(struct tty_struct *tty,
  79              const unsigned char *buf, int count);
  80 int  gs_write_room(struct tty_struct *tty);
  81 int  gs_chars_in_buffer(struct tty_struct *tty);
  82 void gs_flush_buffer(struct tty_struct *tty);
  83 void gs_flush_chars(struct tty_struct *tty);
  84 void gs_stop(struct tty_struct *tty);
  85 void gs_start(struct tty_struct *tty);
  86 void gs_hangup(struct tty_struct *tty);
  87 int  gs_block_til_ready(void *port, struct file *filp);
  88 void gs_close(struct tty_struct *tty, struct file *filp);
  89 void gs_set_termios (struct tty_struct * tty,
  90                      struct termios * old_termios);
  91 int  gs_init_port(struct gs_port *port);
  92 int  gs_setserial(struct gs_port *port, struct serial_struct __user *sp);
  93 int  gs_getserial(struct gs_port *port, struct serial_struct __user *sp);
  94 void gs_got_break(struct gs_port *port);
  95
  96 #endif