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/*********************************************************************
 *
 *	sir.h:	include file for irda-sir device abstraction layer
 *
 *	Copyright (c) 2002 Martin Diehl
 *
 *	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.
 *
 ********************************************************************/
 
#ifndef IRDA_SIR_H
#define IRDA_SIR_H
 
#include <linux/netdevice.h>
#include <linux/workqueue.h>
 
#include <net/irda/irda.h>
#include <net/irda/irda_device.h>		// iobuff_t
 
struct sir_fsm {
	struct semaphore	sem;
	struct delayed_work	work;
	unsigned		state, substate;
	int			param;
	int			result;
};
 
#define SIRDEV_STATE_WAIT_TX_COMPLETE	0x0100
 
/* substates for wait_tx_complete */
#define SIRDEV_STATE_WAIT_XMIT		0x0101
#define SIRDEV_STATE_WAIT_UNTIL_SENT	0x0102
#define SIRDEV_STATE_TX_DONE		0x0103
 
#define SIRDEV_STATE_DONGLE_OPEN		0x0300
 
/* 0x0301-0x03ff reserved for individual dongle substates */
 
#define SIRDEV_STATE_DONGLE_CLOSE	0x0400
 
/* 0x0401-0x04ff reserved for individual dongle substates */
 
#define SIRDEV_STATE_SET_DTR_RTS		0x0500
 
#define SIRDEV_STATE_SET_SPEED		0x0700
#define SIRDEV_STATE_DONGLE_CHECK	0x0800
#define SIRDEV_STATE_DONGLE_RESET	0x0900
 
/* 0x0901-0x09ff reserved for individual dongle substates */
 
#define SIRDEV_STATE_DONGLE_SPEED	0x0a00
/* 0x0a01-0x0aff reserved for individual dongle substates */
 
#define SIRDEV_STATE_PORT_SPEED		0x0b00
#define SIRDEV_STATE_DONE		0x0c00
#define SIRDEV_STATE_ERROR		0x0d00
#define SIRDEV_STATE_COMPLETE		0x0e00
 
#define SIRDEV_STATE_DEAD		0xffff
 
 
struct sir_dev;
 
struct dongle_driver {
 
	struct module *owner;
 
	const char *driver_name;
 
	IRDA_DONGLE type;
 
	int	(*open)(struct sir_dev *dev);
	int	(*close)(struct sir_dev *dev);
	int	(*reset)(struct sir_dev *dev);
	int	(*set_speed)(struct sir_dev *dev, unsigned speed);
 
	struct list_head dongle_list;
};
 
struct sir_driver {
 
	struct module *owner;
 
	const char *driver_name;
 
	int qos_mtt_bits;
 
	int (*chars_in_buffer)(struct sir_dev *dev);
	void (*wait_until_sent)(struct sir_dev *dev);
	int (*set_speed)(struct sir_dev *dev, unsigned speed);
	int (*set_dtr_rts)(struct sir_dev *dev, int dtr, int rts);
 
	int (*do_write)(struct sir_dev *dev, const unsigned char *ptr, size_t len);
 
	int (*start_dev)(struct sir_dev *dev);
	int (*stop_dev)(struct sir_dev *dev);
};
 
 
/* exported */
 
extern int irda_register_dongle(struct dongle_driver *new);
extern int irda_unregister_dongle(struct dongle_driver *drv);
 
extern struct sir_dev * sirdev_get_instance(const struct sir_driver *drv, const char *name);
extern int sirdev_put_instance(struct sir_dev *self);
 
extern int sirdev_set_dongle(struct sir_dev *dev, IRDA_DONGLE type);
extern void sirdev_write_complete(struct sir_dev *dev);
extern int sirdev_receive(struct sir_dev *dev, const unsigned char *cp, size_t count);
 
/* low level helpers for SIR device/dongle setup */
extern int sirdev_raw_write(struct sir_dev *dev, const char *buf, int len);
extern int sirdev_raw_read(struct sir_dev *dev, char *buf, int len);
extern int sirdev_set_dtr_rts(struct sir_dev *dev, int dtr, int rts);
 
/* not exported */
 
extern int sirdev_get_dongle(struct sir_dev *self, IRDA_DONGLE type);
extern int sirdev_put_dongle(struct sir_dev *self);
 
extern void sirdev_enable_rx(struct sir_dev *dev);
extern int sirdev_schedule_request(struct sir_dev *dev, int state, unsigned param);
 
/* inline helpers */
 
static inline int sirdev_schedule_speed(struct sir_dev *dev, unsigned speed)
{
	return sirdev_schedule_request(dev, SIRDEV_STATE_SET_SPEED, speed);
}
 
static inline int sirdev_schedule_dongle_open(struct sir_dev *dev, int dongle_id)
{
	return sirdev_schedule_request(dev, SIRDEV_STATE_DONGLE_OPEN, dongle_id);
}
 
static inline int sirdev_schedule_dongle_close(struct sir_dev *dev)
{
	return sirdev_schedule_request(dev, SIRDEV_STATE_DONGLE_CLOSE, 0);
}
 
static inline int sirdev_schedule_dtr_rts(struct sir_dev *dev, int dtr, int rts)
{
	int	dtrrts;
 
	dtrrts = ((dtr) ? 0x02 : 0x00) | ((rts) ? 0x01 : 0x00);
	return sirdev_schedule_request(dev, SIRDEV_STATE_SET_DTR_RTS, dtrrts);
}
 
#if 0
static inline int sirdev_schedule_mode(struct sir_dev *dev, int mode)
{
	return sirdev_schedule_request(dev, SIRDEV_STATE_SET_MODE, mode);
}
#endif
 
 
struct sir_dev {
	struct net_device *netdev;
	struct net_device_stats stats;
 
	struct irlap_cb    *irlap;
 
	struct qos_info qos;
 
	char hwname[32];
 
	struct sir_fsm fsm;
	atomic_t enable_rx;
	int raw_tx;
	spinlock_t tx_lock;
 
	u32 new_speed;
 	u32 flags;
 
	unsigned	speed;
 
	iobuff_t tx_buff;          /* Transmit buffer */
	iobuff_t rx_buff;          /* Receive buffer */
	struct sk_buff *tx_skb;
 
	const struct dongle_driver * dongle_drv;
	const struct sir_driver * drv;
	void *priv;
 
};
 
#endif	/* IRDA_SIR_H */