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/*
* generic_serial.h
*
* Copyright (C) 1998 R.E.Wolff@BitWizard.nl
*
* written for the SX serial driver.
* Contains the code that should be shared over all the serial drivers.
*
* Version 0.1 -- December, 1998.
*/
#ifndef GENERIC_SERIAL_H
#define GENERIC_SERIAL_H
#ifdef __KERNEL__
#include <linux/mutex.h>
struct real_driver {
void (*disable_tx_interrupts) (void *);
void (*enable_tx_interrupts) (void *);
void (*disable_rx_interrupts) (void *);
void (*enable_rx_interrupts) (void *);
int (*get_CD) (void *);
void (*shutdown_port) (void*);
int (*set_real_termios) (void*);
int (*chars_in_buffer) (void*);
void (*close) (void*);
void (*hungup) (void*);
void (*getserial) (void*, struct serial_struct *sp);
};
struct gs_port {
int magic;
unsigned char *xmit_buf;
int xmit_head;
int xmit_tail;
int xmit_cnt;
struct mutex port_write_mutex;
int flags;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
int count;
int blocked_open;
struct tty_struct *tty;
unsigned long event;
unsigned short closing_wait;
int close_delay;
struct real_driver *rd;
int wakeup_chars;
int baud_base;
int baud;
int custom_divisor;
spinlock_t driver_lock;
};
#endif /* __KERNEL__ */
/* Flags */
/* Warning: serial.h defines some ASYNC_ flags, they say they are "only"
used in serial.c, but they are also used in all other serial drivers.
Make sure they don't clash with these here... */
#define GS_TX_INTEN 0x00800000
#define GS_RX_INTEN 0x00400000
#define GS_ACTIVE 0x00200000
#define GS_TYPE_NORMAL 1
#define GS_DEBUG_FLUSH 0x00000001
#define GS_DEBUG_BTR 0x00000002
#define GS_DEBUG_TERMIOS 0x00000004
#define GS_DEBUG_STUFF 0x00000008
#define GS_DEBUG_CLOSE 0x00000010
#define GS_DEBUG_FLOW 0x00000020
#define GS_DEBUG_WRITE 0x00000040
#ifdef __KERNEL__
int gs_put_char(struct tty_struct *tty, unsigned char ch);
int gs_write(struct tty_struct *tty,
const unsigned char *buf, int count);
int gs_write_room(struct tty_struct *tty);
int gs_chars_in_buffer(struct tty_struct *tty);
void gs_flush_buffer(struct tty_struct *tty);
void gs_flush_chars(struct tty_struct *tty);
void gs_stop(struct tty_struct *tty);
void gs_start(struct tty_struct *tty);
void gs_hangup(struct tty_struct *tty);
int gs_block_til_ready(void *port, struct file *filp);
void gs_close(struct tty_struct *tty, struct file *filp);
void gs_set_termios (struct tty_struct * tty,
struct ktermios * old_termios);
int gs_init_port(struct gs_port *port);
int gs_setserial(struct gs_port *port, struct serial_struct __user *sp);
int gs_getserial(struct gs_port *port, struct serial_struct __user *sp);
void gs_got_break(struct gs_port *port);
#endif /* __KERNEL__ */
#endif
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