include/net/irda/irmod.h

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 1 /*********************************************************************
 2  *
 3  * Filename: irmod.h
 4  * Version: 0.3
 5  * Description: IrDA module and utilities functions
 6  * Status: Experimental.
 7  * Author: Dag Brattli <dagb@cs.uit.no>
 8  * Created at: Mon Dec 15 13:58:52 1997
 9  * Modified at: Fri Apr 9 11:13:39 1999
 10  * Modified by: Dag Brattli <dagb@cs.uit.no>
 11  *
 12  * Copyright (c) 1998 Dag Brattli, All Rights Reserved.
 13  *
 14  * This program is free software; you can redistribute it and/or
 15  * modify it under the terms of the GNU General Public License as
 16  * published by the Free Software Foundation; either version 2 of
 17  * the License, or (at your option) any later version.
 18  *
 19  * Neither Dag Brattli nor University of Tromsø admit liability nor
 20  * provide warranty for any of this software. This material is
 21  * provided "AS-IS" and at no charg.
 22  *
 23  ********************************************************************/
 24
 25 #ifndef IRMOD_H
 26 #define IRMOD_H
 27
 28 #include <linux/skbuff.h>
 29 #include <linux/miscdevice.h>
 30
 31 #include <net/irda/irqueue.h>
 32
 33 #define IRMGR_IOC_MAGIC'm'
 34 #define IRMGR_IOCTNPC _IO(IRMGR_IOC_MAGIC, 1)
 35 #define IRMGR_IOC_MAXNR 1
 36
 37 /*
 38  * Events that we pass to the user space manager
 39  */
 40 typedefenum{
 41  EVENT_DEVICE_DISCOVERED =0,
 42  EVENT_REQUEST_MODULE,
 43  EVENT_IRLAN_START,
 44  EVENT_IRLAN_STOP,
 45  EVENT_IRLPT_START,
 46  EVENT_IRLPT_STOP,
 47  EVENT_IROBEX_START,
 48  EVENT_IROBEX_STOP,
 49  EVENT_IRDA_STOP,
 50  EVENT_NEED_PROCESS_CONTEXT,
 51 } IRMGR_EVENT;
 52
 53 /*
 54  * Event information passed to the IrManager daemon process
 55  */
 56 struct irmanager_event {
 57  IRMGR_EVENT event;
 58 char devname[10];
 59 char info[32];
 60 int service;
 61  __u32 saddr;
 62  __u32 daddr;
 63 };
 64
 65 typedefvoid(*TODO_CALLBACK)(void*self, __u32 param);
 66
 67 /*
 68  * Same as irmanager_event but this one can be queued and inclueds some
 69  * addtional information
 70  */
 71 struct irda_event {
 72  QUEUE q;/* Must be first */
 73
 74 struct irmanager_event event;
 75 };
 76
 77 /*
 78  * Funtions with needs to be called with a process context
 79  */
 80 struct irda_todo {
 81  QUEUE q;/* Must be first */
 82
 83 void*self;
 84  TODO_CALLBACK callback;
 85  __u32 param;
 86 };
 87
 88 /*
 89  * Main structure for the IrDA device (not much here :-)
 90  */
 91 struct irda_cb {
 92 struct miscdevice dev;
 93  wait_queue_head_t wait_queue;
 94
 95 int in_use;
 96
 97  QUEUE *event_queue;/* Events queued for the irmanager */
 98  QUEUE *todo_queue;/* Todo list */
 99 };
 100
 101 intirmod_init_module(void);
 102 voidirmod_cleanup_module(void);
 103
 104 /*
 105  * Function irda_lock (lock)
 106  *
 107  * Lock variable. Returns false if the lock is already set.
 108  *
 109  */
 110 staticinlineintirda_lock(int*lock)
 111 {
 112 if(test_and_set_bit(0, (void*) lock)) {
 113 DEBUG(3, __FUNCTION__
 114 "(), Trying to lock, already locked variable!\n");
 115 return FALSE;
 116 }
 117 return TRUE;
 118 }
 119
 120 inlineintirda_unlock(int*lock);
 121
 122 voidirda_notify_init(notify_t *notify);
 123
 124 voidirda_execute_as_process(void*self, TODO_CALLBACK callback, __u32 param);
 125 voidirmanager_notify(struct irmanager_event *event);
 126
 127 externvoidirda_proc_modcount(struct inode *,int);
 128 voidirda_mod_inc_use_count(void);
 129 voidirda_mod_dec_use_count(void);
 130
 131 #endif/* IRMOD_H */
 132
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