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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 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
77void gs_put_char(struct tty_struct *tty, unsigned char ch);
78int gs_write(struct tty_struct *tty,
79 const unsigned char *buf, int count);
80int gs_write_room(struct tty_struct *tty);
81int gs_chars_in_buffer(struct tty_struct *tty);
82void gs_flush_buffer(struct tty_struct *tty);
83void gs_flush_chars(struct tty_struct *tty);
84void gs_stop(struct tty_struct *tty);
85void gs_start(struct tty_struct *tty);
86void gs_hangup(struct tty_struct *tty);
87int gs_block_til_ready(void *port, struct file *filp);
88void gs_close(struct tty_struct *tty, struct file *filp);
89void gs_set_termios (struct tty_struct * tty,
90 struct termios * old_termios);
91int gs_init_port(struct gs_port *port);
92int gs_setserial(struct gs_port *port, struct serial_struct __user *sp);
93int gs_getserial(struct gs_port *port, struct serial_struct __user *sp);
94void gs_got_break(struct gs_port *port);
95
96#endif