/*********************************************************************
*
* Filename: ircomm_tty.h
* Version:
* Description:
* Status: Experimental.
* Author: Dag Brattli <[email protected]>
* Created at: Sun Jun 6 23:24:22 1999
* Modified at: Fri Jan 28 13:16:57 2000
* Modified by: Dag Brattli <[email protected]>
*
* Copyright (c) 1999-2000 Dag Brattli, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
********************************************************************/

#ifndef IRCOMM_TTY_H
#define IRCOMM_TTY_H

#include <linux/serial.h>
#include <linux/termios.h>
#include <linux/timer.h>
#include <linux/tty.h> /* struct tty_struct */

#include <net/irda/irias_object.h>
#include <net/irda/ircomm_core.h>
#include <net/irda/ircomm_param.h>

#define IRCOMM_TTY_PORTS 32
#define IRCOMM_TTY_MAGIC 0x3432
#define IRCOMM_TTY_MAJOR 161
#define IRCOMM_TTY_MINOR 0

/* This is used as an initial value to max_header_size before the proper
* value is filled in (5 for ttp, 4 for lmp). This allow us to detect
* the state of the underlying connection. - Jean II */
#define IRCOMM_TTY_HDR_UNINITIALISED 16
/* Same for payload size. See qos.c for the smallest max data size */
#define IRCOMM_TTY_DATA_UNINITIALISED (64 - IRCOMM_TTY_HDR_UNINITIALISED)

/*
* IrCOMM TTY driver state
*/
struct ircomm_tty_cb {
irda_queue_t queue; /* Must be first */
struct tty_port port;
magic_t magic;

int state; /* Connect state */

struct ircomm_cb *ircomm; /* IrCOMM layer instance */

struct sk_buff *tx_skb; /* Transmit buffer */
struct sk_buff *ctrl_skb; /* Control data buffer */

/* Parameters */
struct ircomm_params settings;

__u8 service_type; /* The service that we support */
int client; /* True if we are a client */
LOCAL_FLOW flow; /* IrTTP flow status */

int line;

__u8 dlsap_sel;
__u8 slsap_sel;

__u32 saddr;
__u32 daddr;

__u32 max_data_size; /* Max data we can transmit in one packet */
__u32 max_header_size; /* The amount of header space we must reserve */
__u32 tx_data_size; /* Max data size of current tx_skb */

struct iriap_cb *iriap; /* Instance used for querying remote IAS */
struct ias_object* obj;
void *skey;
void *ckey;

struct timer_list watchdog_timer;
struct work_struct tqueue;

/* Protect concurent access to :
* o self->ctrl_skb
* o self->tx_skb
* Maybe other things may gain to be protected as well...
* Jean II */
spinlock_t spinlock;
};

void ircomm_tty_start(struct tty_struct *tty);
void ircomm_tty_check_modem_status(struct ircomm_tty_cb *self);

int ircomm_tty_tiocmget(struct tty_struct *tty);
int ircomm_tty_tiocmset(struct tty_struct *tty, unsigned int set,
unsigned int clear);
int ircomm_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
unsigned long arg);
void ircomm_tty_set_termios(struct tty_struct *tty,
struct ktermios *old_termios);

#endif