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/*********************************************************************
*
* Filename: irmod.h
* Version: 0.3
* Description: IrDA module and utilities functions
* Status: Experimental.
* Author: Dag Brattli <dagb@cs.uit.no>
* Created at: Mon Dec 15 13:58:52 1997
* Modified at: Sun Oct 31 20:01:17 1999
* Modified by: Dag Brattli <dagb@cs.uit.no>
*
* Copyright (c) 1998-1999 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.
*
* Neither Dag Brattli nor University of Tromsø admit liability nor
* provide warranty for any of this software. This material is
* provided "AS-IS" and at no charg.
*
********************************************************************/
#ifndef IRMOD_H
#define IRMOD_H
#include <linux/skbuff.h>
#include <linux/miscdevice.h>
#include <net/irda/irqueue.h>
#define IRMGR_IOC_MAGIC 'm'
#define IRMGR_IOCTNPC _IO(IRMGR_IOC_MAGIC, 1)
#define IRMGR_IOC_MAXNR 1
/*
* Events that we pass to the user space manager
*/
typedef enum {
EVENT_DEVICE_DISCOVERED = 0,
EVENT_REQUEST_MODULE,
EVENT_IRLAN_START,
EVENT_IRLAN_STOP,
EVENT_IRLPT_START, /* Obsolete */
EVENT_IRLPT_STOP, /* Obsolete */
EVENT_IROBEX_START, /* Obsolete */
EVENT_IROBEX_STOP, /* Obsolete */
EVENT_IRDA_STOP,
EVENT_NEED_PROCESS_CONTEXT,
} IRMGR_EVENT;
/*
* Event information passed to the IrManager daemon process
*/
struct irmanager_event {
IRMGR_EVENT event;
char devname[10];
char info[32];
int service;
__u32 saddr;
__u32 daddr;
};
typedef void (*TODO_CALLBACK)( void *self, __u32 param);
/*
* Same as irmanager_event but this one can be queued and inclueds some
* addtional information
*/
struct irda_event {
queue_t q; /* Must be first */
struct irmanager_event event;
};
/*
* Funtions with needs to be called with a process context
*/
struct irda_todo {
queue_t q; /* Must be first */
void *self;
TODO_CALLBACK callback;
__u32 param;
};
/*
* Main structure for the IrDA device (not much here :-)
*/
struct irda_cb {
struct miscdevice dev;
wait_queue_head_t wait_queue;
int in_use;
queue_t *event_queue; /* Events queued for the irmanager */
queue_t *todo_queue; /* Todo list */
};
int irmod_init_module(void);
void irmod_cleanup_module(void);
/*
* Function irda_lock (lock)
*
* Lock variable. Returns false if the lock is already set.
*
*/
static inline int irda_lock(int *lock)
{
if (test_and_set_bit( 0, (void *) lock)) {
IRDA_DEBUG(3, __FUNCTION__
"(), Trying to lock, already locked variable!\n");
return FALSE;
}
return TRUE;
}
inline int irda_unlock(int *lock);
void irda_notify_init(notify_t *notify);
void irda_execute_as_process(void *self, TODO_CALLBACK callback, __u32 param);
void irmanager_notify(struct irmanager_event *event);
extern void irda_proc_modcount(struct inode *, int);
void irda_mod_inc_use_count(void);
void irda_mod_dec_use_count(void);
#endif /* IRMOD_H */
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