1/*********************************************************************
2 *
3 * Filename:      irmod.c
4 * Version:       0.9
5 * Description:   IrDA stack main entry points
6 * Status:        Experimental.
7 * Author:        Dag Brattli <dagb@cs.uit.no>
8 * Created at:    Mon Dec 15 13:55:39 1997
9 * Modified at:   Wed Jan  5 15:12:41 2000
10 * Modified by:   Dag Brattli <dagb@cs.uit.no>
11 *
12 *     Copyright (c) 1997, 1999-2000 Dag Brattli, All Rights Reserved.
13 *     Copyright (c) 2000-2004 Jean Tourrilhes <jt@hpl.hp.com>
14 *
15 *     This program is free software; you can redistribute it and/or
16 *     modify it under the terms of the GNU General Public License as
17 *     published by the Free Software Foundation; either version 2 of
18 *     the License, or (at your option) any later version.
19 *
20 *     Neither Dag Brattli nor University of Troms�� admit liability nor
21 *     provide warranty for any of this software. This material is
22 *     provided "AS-IS" and at no charge.
23 *
24 ********************************************************************/
25
26/*
27 * This file contains the main entry points of the IrDA stack.
28 * They are in this file and not af_irda.c because some developpers
29 * are using the IrDA stack without the socket API (compiling out
30 * af_irda.c).
31 * Jean II
32 */
33
34#include <linux/module.h>
35#include <linux/moduleparam.h>
36
37#include <net/irda/irda.h>
38#include <net/irda/irmod.h>		/* notify_t */
39#include <net/irda/irlap.h>		/* irlap_init */
40#include <net/irda/irlmp.h>		/* irlmp_init */
41#include <net/irda/iriap.h>		/* iriap_init */
42#include <net/irda/irttp.h>		/* irttp_init */
43#include <net/irda/irda_device.h>	/* irda_device_init */
44
45/*
46 * Module parameters
47 */
48#ifdef CONFIG_IRDA_DEBUG
49unsigned int irda_debug = IRDA_DEBUG_LEVEL;
50module_param_named(debug, irda_debug, uint, 0);
51MODULE_PARM_DESC(debug, "IRDA debugging level");
52EXPORT_SYMBOL(irda_debug);
53#endif
54
55/* Packet type handler.
56 * Tell the kernel how IrDA packets should be handled.
57 */
58static struct packet_type irda_packet_type __read_mostly = {
59	.type	= cpu_to_be16(ETH_P_IRDA),
60	.func	= irlap_driver_rcv,	/* Packet type handler irlap_frame.c */
61};
62
63/*
64 * Function irda_notify_init (notify)
65 *
66 *    Used for initializing the notify structure
67 *
68 */
69void irda_notify_init(notify_t *notify)
70{
71	notify->data_indication = NULL;
72	notify->udata_indication = NULL;
73	notify->connect_confirm = NULL;
74	notify->connect_indication = NULL;
75	notify->disconnect_indication = NULL;
76	notify->flow_indication = NULL;
77	notify->status_indication = NULL;
78	notify->instance = NULL;
79	strlcpy(notify->name, "Unknown", sizeof(notify->name));
80}
81EXPORT_SYMBOL(irda_notify_init);
82
83/*
84 * Function irda_init (void)
85 *
86 *  Protocol stack initialisation entry point.
87 *  Initialise the various components of the IrDA stack
88 */
89static int __init irda_init(void)
90{
91	int ret = 0;
92
93	IRDA_DEBUG(0, "%s()\n", __func__);
94
95	/* Lower layer of the stack */
96	irlmp_init();
97	irlap_init();
98
99	/* Driver/dongle support */
100	irda_device_init();
101
102	/* Higher layers of the stack */
103	iriap_init();
104	irttp_init();
105	ret = irsock_init();
106	if (ret < 0)
107		goto out_err_1;
108
109	/* Add IrDA packet type (Start receiving packets) */
110	dev_add_pack(&irda_packet_type);
111
112	/* External APIs */
113#ifdef CONFIG_PROC_FS
114	irda_proc_register();
115#endif
116#ifdef CONFIG_SYSCTL
117	ret = irda_sysctl_register();
118	if (ret < 0)
119		goto out_err_2;
120#endif
121
122	ret = irda_nl_register();
123	if (ret < 0)
124		goto out_err_3;
125
126	return 0;
127
128 out_err_3:
129#ifdef CONFIG_SYSCTL
130	irda_sysctl_unregister();
131 out_err_2:
132#endif
133#ifdef CONFIG_PROC_FS
134	irda_proc_unregister();
135#endif
136
137	/* Remove IrDA packet type (stop receiving packets) */
138	dev_remove_pack(&irda_packet_type);
139
140	/* Remove higher layers */
141	irsock_cleanup();
142 out_err_1:
143	irttp_cleanup();
144	iriap_cleanup();
145
146	/* Remove lower layers */
147	irda_device_cleanup();
148	irlap_cleanup(); /* Must be done before irlmp_cleanup()! DB */
149
150	/* Remove middle layer */
151	irlmp_cleanup();
152
153
154	return ret;
155}
156
157/*
158 * Function irda_cleanup (void)
159 *
160 *  Protocol stack cleanup/removal entry point.
161 *  Cleanup the various components of the IrDA stack
162 */
163static void __exit irda_cleanup(void)
164{
165	/* Remove External APIs */
166	irda_nl_unregister();
167
168#ifdef CONFIG_SYSCTL
169	irda_sysctl_unregister();
170#endif
171#ifdef CONFIG_PROC_FS
172	irda_proc_unregister();
173#endif
174
175	/* Remove IrDA packet type (stop receiving packets) */
176	dev_remove_pack(&irda_packet_type);
177
178	/* Remove higher layers */
179	irsock_cleanup();
180	irttp_cleanup();
181	iriap_cleanup();
182
183	/* Remove lower layers */
184	irda_device_cleanup();
185	irlap_cleanup(); /* Must be done before irlmp_cleanup()! DB */
186
187	/* Remove middle layer */
188	irlmp_cleanup();
189}
190
191/*
192 * The IrDA stack must be initialised *before* drivers get initialised,
193 * and *before* higher protocols (IrLAN/IrCOMM/IrNET) get initialised,
194 * otherwise bad things will happen (hashbins will be NULL for example).
195 * Those modules are at module_init()/device_initcall() level.
196 *
197 * On the other hand, it needs to be initialised *after* the basic
198 * networking, the /proc/net filesystem and sysctl module. Those are
199 * currently initialised in .../init/main.c (before initcalls).
200 * Also, IrDA drivers needs to be initialised *after* the random number
201 * generator (main stack and higher layer init don't need it anymore).
202 *
203 * Jean II
204 */
205subsys_initcall(irda_init);
206module_exit(irda_cleanup);
207
208MODULE_AUTHOR("Dag Brattli <dagb@cs.uit.no> & Jean Tourrilhes <jt@hpl.hp.com>");
209MODULE_DESCRIPTION("The Linux IrDA Protocol Stack");
210MODULE_LICENSE("GPL");
211MODULE_ALIAS_NETPROTO(PF_IRDA);
212