File: /usr/src/linux/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
16
17
18 struct 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
34 struct gs_port {
35 int magic;
36 unsigned char *xmit_buf;
37 int xmit_head;
38 int xmit_tail;
39 int xmit_cnt;
40 /* struct semaphore port_write_sem; */
41 int flags;
42 struct termios normal_termios;
43 struct termios callout_termios;
44 wait_queue_head_t open_wait;
45 wait_queue_head_t close_wait;
46 long session;
47 long pgrp;
48 int count;
49 int blocked_open;
50 struct tty_struct *tty;
51 int event;
52 unsigned short closing_wait;
53 int close_delay;
54 struct real_driver *rd;
55 int wakeup_chars;
56 int baud_base;
57 int baud;
58 int custom_divisor;
59 };
60
61
62 /* Flags */
63 /* Warning: serial.h defines some ASYNC_ flags, they say they are "only"
64 used in serial.c, but they are also used in all other serial drivers.
65 Make sure they don't clash with these here... */
66 #define GS_TX_INTEN 0x00800000
67 #define GS_RX_INTEN 0x00400000
68 #define GS_ACTIVE 0x00200000
69
70
71
72 #define GS_TYPE_NORMAL 1
73 #define GS_TYPE_CALLOUT 2
74
75
76 #define GS_DEBUG_FLUSH 0x00000001
77 #define GS_DEBUG_BTR 0x00000002
78 #define GS_DEBUG_TERMIOS 0x00000004
79 #define GS_DEBUG_STUFF 0x00000008
80 #define GS_DEBUG_CLOSE 0x00000010
81 #define GS_DEBUG_FLOW 0x00000020
82
83
84 void gs_put_char(struct tty_struct *tty, unsigned char ch);
85 int gs_write(struct tty_struct *tty, int from_user,
86 const unsigned char *buf, int count);
87 int gs_write_room(struct tty_struct *tty);
88 int gs_chars_in_buffer(struct tty_struct *tty);
89 void gs_flush_buffer(struct tty_struct *tty);
90 void gs_flush_chars(struct tty_struct *tty);
91 void gs_stop(struct tty_struct *tty);
92 void gs_start(struct tty_struct *tty);
93 void gs_hangup(struct tty_struct *tty);
94 void gs_do_softint(void *private_);
95 int gs_block_til_ready(void *port, struct file *filp);
96 void gs_close(struct tty_struct *tty, struct file *filp);
97 void gs_set_termios (struct tty_struct * tty,
98 struct termios * old_termios);
99 int gs_init_port(struct gs_port *port);
100 int gs_setserial(struct gs_port *port, struct serial_struct *sp);
101 void gs_getserial(struct gs_port *port, struct serial_struct *sp);
102 void gs_got_break(struct gs_port *port);
103
104 extern int gs_debug;
105
106 #endif
107