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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
David Woodhousef2999e42006-04-25 14:07:02 +010015#ifdef __KERNEL__
Ingo Molnar81861d72006-03-23 03:00:44 -080016#include <linux/mutex.h>
17
Linus Torvalds1da177e2005-04-16 15:20:36 -070018struct 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
34struct gs_port {
35 int magic;
36 unsigned char *xmit_buf;
37 int xmit_head;
38 int xmit_tail;
39 int xmit_cnt;
Ingo Molnar81861d72006-03-23 03:00:44 -080040 struct mutex port_write_mutex;
Linus Torvalds1da177e2005-04-16 15:20:36 -070041 int flags;
42 wait_queue_head_t open_wait;
43 wait_queue_head_t close_wait;
44 int count;
45 int blocked_open;
46 struct tty_struct *tty;
47 unsigned long event;
48 unsigned short closing_wait;
49 int close_delay;
50 struct real_driver *rd;
51 int wakeup_chars;
52 int baud_base;
53 int baud;
54 int custom_divisor;
55 spinlock_t driver_lock;
56};
57
David Woodhousef2999e42006-04-25 14:07:02 +010058#endif /* __KERNEL__ */
Linus Torvalds1da177e2005-04-16 15:20:36 -070059
60/* Flags */
61/* Warning: serial.h defines some ASYNC_ flags, they say they are "only"
62 used in serial.c, but they are also used in all other serial drivers.
63 Make sure they don't clash with these here... */
64#define GS_TX_INTEN 0x00800000
65#define GS_RX_INTEN 0x00400000
66#define GS_ACTIVE 0x00200000
67
68
69
70#define GS_TYPE_NORMAL 1
71
72#define GS_DEBUG_FLUSH 0x00000001
73#define GS_DEBUG_BTR 0x00000002
74#define GS_DEBUG_TERMIOS 0x00000004
75#define GS_DEBUG_STUFF 0x00000008
76#define GS_DEBUG_CLOSE 0x00000010
77#define GS_DEBUG_FLOW 0x00000020
78#define GS_DEBUG_WRITE 0x00000040
79
David Woodhousef2999e42006-04-25 14:07:02 +010080#ifdef __KERNEL__
Linus Torvalds1da177e2005-04-16 15:20:36 -070081void gs_put_char(struct tty_struct *tty, unsigned char ch);
82int gs_write(struct tty_struct *tty,
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);
91int gs_block_til_ready(void *port, struct file *filp);
92void gs_close(struct tty_struct *tty, struct file *filp);
93void gs_set_termios (struct tty_struct * tty,
Alan Cox606d0992006-12-08 02:38:45 -080094 struct ktermios * old_termios);
Linus Torvalds1da177e2005-04-16 15:20:36 -070095int gs_init_port(struct gs_port *port);
96int gs_setserial(struct gs_port *port, struct serial_struct __user *sp);
97int gs_getserial(struct gs_port *port, struct serial_struct __user *sp);
98void gs_got_break(struct gs_port *port);
David Woodhousef2999e42006-04-25 14:07:02 +010099#endif /* __KERNEL__ */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100#endif