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 #include <linux/mutex.h>
  16
  17 struct real_driver {
  18   void                    (*disable_tx_interrupts) (void *);
  19   void                    (*enable_tx_interrupts) (void *);
  20   void                    (*disable_rx_interrupts) (void *);
  21   void                    (*enable_rx_interrupts) (void *);
  22   int                     (*get_CD) (void *);
  23   void                    (*shutdown_port) (void*);
  24   int                     (*set_real_termios) (void*);
  25   int                     (*chars_in_buffer) (void*);
  26   void                    (*close) (void*);
  27   void                    (*hungup) (void*);
  28   void                    (*getserial) (void*, struct serial_struct *sp);
  29 };
  30
  31
  32
  33 struct gs_port {
  34   int                     magic;
  35   unsigned char           *xmit_buf;
  36   int                     xmit_head;
  37   int                     xmit_tail;
  38   int                     xmit_cnt;
  39   struct mutex            port_write_mutex;
  40   int                     flags;
  41   wait_queue_head_t       open_wait;
  42   wait_queue_head_t       close_wait;
  43   int                     count;
  44   int                     blocked_open;
  45   struct tty_struct       *tty;
  46   unsigned long           event;
  47   unsigned short          closing_wait;
  48   int                     close_delay;
  49   struct real_driver      *rd;
  50   int                     wakeup_chars;
  51   int                     baud_base;
  52   int                     baud;
  53   int                     custom_divisor;
  54   spinlock_t              driver_lock;
  55 };
  56
  57
  58 /* Flags */
  59 /* Warning: serial.h defines some ASYNC_ flags, they say they are "only"
  60    used in serial.c, but they are also used in all other serial drivers.
  61    Make sure they don't clash with these here... */
  62 #define GS_TX_INTEN      0x00800000
  63 #define GS_RX_INTEN      0x00400000
  64 #define GS_ACTIVE        0x00200000
  65
  66
  67
  68 #define GS_TYPE_NORMAL   1
  69
  70 #define GS_DEBUG_FLUSH   0x00000001
  71 #define GS_DEBUG_BTR     0x00000002
  72 #define GS_DEBUG_TERMIOS 0x00000004
  73 #define GS_DEBUG_STUFF   0x00000008
  74 #define GS_DEBUG_CLOSE   0x00000010
  75 #define GS_DEBUG_FLOW    0x00000020
  76 #define GS_DEBUG_WRITE   0x00000040
  77
  78
  79 void gs_put_char(struct tty_struct *tty, unsigned char ch);
  80 int  gs_write(struct tty_struct *tty,
  81              const unsigned char *buf, int count);
  82 int  gs_write_room(struct tty_struct *tty);
  83 int  gs_chars_in_buffer(struct tty_struct *tty);
  84 void gs_flush_buffer(struct tty_struct *tty);
  85 void gs_flush_chars(struct tty_struct *tty);
  86 void gs_stop(struct tty_struct *tty);
  87 void gs_start(struct tty_struct *tty);
  88 void gs_hangup(struct tty_struct *tty);
  89 int  gs_block_til_ready(void *port, struct file *filp);
  90 void gs_close(struct tty_struct *tty, struct file *filp);
  91 void gs_set_termios (struct tty_struct * tty,
  92                      struct termios * old_termios);
  93 int  gs_init_port(struct gs_port *port);
  94 int  gs_setserial(struct gs_port *port, struct serial_struct __user *sp);
  95 int  gs_getserial(struct gs_port *port, struct serial_struct __user *sp);
  96 void gs_got_break(struct gs_port *port);
  97
  98 #endif