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
15struct 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
31struct 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  struct termios          normal_termios;
40  struct termios          callout_termios;
41  wait_queue_head_t       open_wait;
42  wait_queue_head_t       close_wait;
43  long                    session;
44  long                    pgrp;
45  int                     count;
46  int                     blocked_open;
47  struct tty_struct       *tty;
48  int                     event;
49  unsigned short          closing_wait;
50  int                     close_delay;
51  struct real_driver      *rd;
52  int                     wakeup_chars;
53  int                     baud_base;
54  int                     baud;
55  int                     custom_divisor;
56};
57
58
59/* Flags */
60/* Warning: serial.h defines some ASYNC_ flags, they say they are "only"
61   used in serial.c, but they are also used in all other serial drivers.
62   Make sure they don't clash with these here... */
63#define GS_TX_INTEN      0x00800000
64#define GS_RX_INTEN      0x00400000
65#define GS_ACTIVE        0x00200000
66
67
68
69#define GS_TYPE_NORMAL   1
70#define GS_TYPE_CALLOUT  2
71
72
73#define GS_DEBUG_FLUSH   0x00000001
74#define GS_DEBUG_BTR     0x00000002
75#define GS_DEBUG_TERMIOS 0x00000004
76#define GS_DEBUG_STUFF   0x00000008
77#define GS_DEBUG_CLOSE   0x00000010
78#define GS_DEBUG_FLOW    0x00000020
79
80
81void gs_put_char(struct tty_struct *tty, unsigned char ch);
82int  gs_write(struct tty_struct *tty, int from_user,
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);
91void gs_do_softint(void *private_);
92int  gs_block_til_ready(void *port, struct file *filp);
93void gs_close(struct tty_struct *tty, struct file *filp);
94void gs_set_termios (struct tty_struct * tty,
95                     struct termios * old_termios);
96int  gs_init_port(struct gs_port *port);
97int  gs_setserial(struct gs_port *port, struct serial_struct *sp);
98int  gs_getserial(struct gs_port *port, struct serial_struct *sp);
99void gs_got_break(struct gs_port *port);
100
101extern int gs_debug;
102
103#endif
104