PageRenderTime 16ms CodeModel.GetById 8ms app.highlight 7ms RepoModel.GetById 0ms app.codeStats 0ms

/drivers/net/wireless/airo_cs.c

https://bitbucket.org/cyanogenmod/android_kernel_asus_tf300t
C | 236 lines | 130 code | 44 blank | 62 comment | 9 complexity | 83854f8acae547b27223954660f80315 MD5 | raw file
Possible License(s): LGPL-2.0, AGPL-1.0, GPL-2.0
  1/*======================================================================
  2
  3    Aironet driver for 4500 and 4800 series cards
  4
  5    This code is released under both the GPL version 2 and BSD licenses.
  6    Either license may be used.  The respective licenses are found at
  7    the end of this file.
  8
  9    This code was developed by Benjamin Reed <breed@users.sourceforge.net>
 10    including portions of which come from the Aironet PC4500
 11    Developer's Reference Manual and used with permission.  Copyright
 12    (C) 1999 Benjamin Reed.  All Rights Reserved.  Permission to use
 13    code in the Developer's manual was granted for this driver by
 14    Aironet.
 15
 16    In addition this module was derived from dummy_cs.
 17    The initial developer of dummy_cs is David A. Hinds
 18    <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
 19    are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
 20
 21======================================================================*/
 22
 23#ifdef __IN_PCMCIA_PACKAGE__
 24#include <pcmcia/k_compat.h>
 25#endif
 26#include <linux/init.h>
 27#include <linux/kernel.h>
 28#include <linux/module.h>
 29#include <linux/ptrace.h>
 30#include <linux/slab.h>
 31#include <linux/string.h>
 32#include <linux/timer.h>
 33#include <linux/netdevice.h>
 34
 35#include <pcmcia/cistpl.h>
 36#include <pcmcia/cisreg.h>
 37#include <pcmcia/ds.h>
 38
 39#include <linux/io.h>
 40#include <asm/system.h>
 41
 42#include "airo.h"
 43
 44
 45/*====================================================================*/
 46
 47MODULE_AUTHOR("Benjamin Reed");
 48MODULE_DESCRIPTION("Support for Cisco/Aironet 802.11 wireless ethernet "
 49		   "cards.  This is the module that links the PCMCIA card "
 50		   "with the airo module.");
 51MODULE_LICENSE("Dual BSD/GPL");
 52MODULE_SUPPORTED_DEVICE("Aironet 4500, 4800 and Cisco 340 PCMCIA cards");
 53
 54/*====================================================================*/
 55
 56static int airo_config(struct pcmcia_device *link);
 57static void airo_release(struct pcmcia_device *link);
 58
 59static void airo_detach(struct pcmcia_device *p_dev);
 60
 61typedef struct local_info_t {
 62	struct net_device *eth_dev;
 63} local_info_t;
 64
 65static int airo_probe(struct pcmcia_device *p_dev)
 66{
 67	local_info_t *local;
 68
 69	dev_dbg(&p_dev->dev, "airo_attach()\n");
 70
 71	/* Allocate space for private device-specific data */
 72	local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
 73	if (!local) {
 74		printk(KERN_ERR "airo_cs: no memory for new device\n");
 75		return -ENOMEM;
 76	}
 77	p_dev->priv = local;
 78
 79	return airo_config(p_dev);
 80} /* airo_attach */
 81
 82static void airo_detach(struct pcmcia_device *link)
 83{
 84	dev_dbg(&link->dev, "airo_detach\n");
 85
 86	airo_release(link);
 87
 88	if (((local_info_t *)link->priv)->eth_dev) {
 89		stop_airo_card(((local_info_t *)link->priv)->eth_dev, 0);
 90	}
 91	((local_info_t *)link->priv)->eth_dev = NULL;
 92
 93	kfree(link->priv);
 94} /* airo_detach */
 95
 96static int airo_cs_config_check(struct pcmcia_device *p_dev, void *priv_data)
 97{
 98	if (p_dev->config_index == 0)
 99		return -EINVAL;
100
101	return pcmcia_request_io(p_dev);
102}
103
104
105static int airo_config(struct pcmcia_device *link)
106{
107	local_info_t *dev;
108	int ret;
109
110	dev = link->priv;
111
112	dev_dbg(&link->dev, "airo_config\n");
113
114	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
115		CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
116
117	ret = pcmcia_loop_config(link, airo_cs_config_check, NULL);
118	if (ret)
119		goto failed;
120
121	if (!link->irq)
122		goto failed;
123
124	ret = pcmcia_enable_device(link);
125	if (ret)
126		goto failed;
127	((local_info_t *)link->priv)->eth_dev =
128		init_airo_card(link->irq,
129			       link->resource[0]->start, 1, &link->dev);
130	if (!((local_info_t *)link->priv)->eth_dev)
131		goto failed;
132
133	return 0;
134
135 failed:
136	airo_release(link);
137	return -ENODEV;
138} /* airo_config */
139
140static void airo_release(struct pcmcia_device *link)
141{
142	dev_dbg(&link->dev, "airo_release\n");
143	pcmcia_disable_device(link);
144}
145
146static int airo_suspend(struct pcmcia_device *link)
147{
148	local_info_t *local = link->priv;
149
150	netif_device_detach(local->eth_dev);
151
152	return 0;
153}
154
155static int airo_resume(struct pcmcia_device *link)
156{
157	local_info_t *local = link->priv;
158
159	if (link->open) {
160		reset_airo_card(local->eth_dev);
161		netif_device_attach(local->eth_dev);
162	}
163
164	return 0;
165}
166
167static const struct pcmcia_device_id airo_ids[] = {
168	PCMCIA_DEVICE_MANF_CARD(0x015f, 0x000a),
169	PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0005),
170	PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0007),
171	PCMCIA_DEVICE_MANF_CARD(0x0105, 0x0007),
172	PCMCIA_DEVICE_NULL,
173};
174MODULE_DEVICE_TABLE(pcmcia, airo_ids);
175
176static struct pcmcia_driver airo_driver = {
177	.owner		= THIS_MODULE,
178	.name		= "airo_cs",
179	.probe		= airo_probe,
180	.remove		= airo_detach,
181	.id_table       = airo_ids,
182	.suspend	= airo_suspend,
183	.resume		= airo_resume,
184};
185
186static int __init airo_cs_init(void)
187{
188	return pcmcia_register_driver(&airo_driver);
189}
190
191static void __exit airo_cs_cleanup(void)
192{
193	pcmcia_unregister_driver(&airo_driver);
194}
195
196/*
197    This program is free software; you can redistribute it and/or
198    modify it under the terms of the GNU General Public License
199    as published by the Free Software Foundation; either version 2
200    of the License, or (at your option) any later version.
201
202    This program is distributed in the hope that it will be useful,
203    but WITHOUT ANY WARRANTY; without even the implied warranty of
204    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
205    GNU General Public License for more details.
206
207    In addition:
208
209    Redistribution and use in source and binary forms, with or without
210    modification, are permitted provided that the following conditions
211    are met:
212
213    1. Redistributions of source code must retain the above copyright
214       notice, this list of conditions and the following disclaimer.
215    2. Redistributions in binary form must reproduce the above copyright
216       notice, this list of conditions and the following disclaimer in the
217       documentation and/or other materials provided with the distribution.
218    3. The name of the author may not be used to endorse or promote
219       products derived from this software without specific prior written
220       permission.
221
222    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
223    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
224    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
225    ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
226    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
227    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
228    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
229    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
230    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
231    IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
232    POSSIBILITY OF SUCH DAMAGE.
233*/
234
235module_init(airo_cs_init);
236module_exit(airo_cs_cleanup);