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/*
* Private header file for the (dumb) serial driver
*
* Copyright (C) 1997 by Theodore Ts'o.
*
* Redistribution of this file is permitted under the terms of the GNU
* Public License (GPL)
*/
#ifndef _LINUX_SERIALP_H
#define _LINUX_SERIALP_H
/*
* This is our internal structure for each serial port's state.
*
* Many fields are paralleled by the structure used by the serial_struct
* structure.
*
* For definitions of the flags field, see tty.h
*/
#include <linux/termios.h>
#include <linux/workqueue.h>
#include <linux/interrupt.h>
#include <linux/circ_buf.h>
#include <linux/wait.h>
struct serial_state {
int baud_base;
unsigned long port;
int irq;
int flags;
int type;
int line;
int xmit_fifo_size;
int custom_divisor;
int count;
unsigned short close_delay;
unsigned short closing_wait; /* time to wait before closing */
struct async_icount icount;
struct async_struct *info;
};
struct async_struct {
struct serial_state *state;
struct tty_struct *tty;
int read_status_mask;
int ignore_status_mask;
int timeout;
int quot;
int x_char; /* xon/xoff character */
int IER; /* Interrupt Enable Register */
int MCR; /* Modem control register */
int blocked_open; /* # of blocked opens */
struct circ_buf xmit;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
wait_queue_head_t delta_msr_wait;
struct async_struct *next_port; /* For the linked list */
struct async_struct *prev_port;
};
#endif /* _LINUX_SERIAL_H */
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