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/drivers/net/wireless/airo_cs.c

http://github.com/mirrors/linux
C | 222 lines | 118 code | 42 blank | 62 comment | 9 complexity | e7d5c6dd23e1c39afd38cacda4732666 MD5 | raw file
  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
 41#include "airo.h"
 42
 43
 44/*====================================================================*/
 45
 46MODULE_AUTHOR("Benjamin Reed");
 47MODULE_DESCRIPTION("Support for Cisco/Aironet 802.11 wireless ethernet "
 48		   "cards.  This is the module that links the PCMCIA card "
 49		   "with the airo module.");
 50MODULE_LICENSE("Dual BSD/GPL");
 51MODULE_SUPPORTED_DEVICE("Aironet 4500, 4800 and Cisco 340 PCMCIA cards");
 52
 53/*====================================================================*/
 54
 55static int airo_config(struct pcmcia_device *link);
 56static void airo_release(struct pcmcia_device *link);
 57
 58static void airo_detach(struct pcmcia_device *p_dev);
 59
 60typedef struct local_info_t {
 61	struct net_device *eth_dev;
 62} local_info_t;
 63
 64static int airo_probe(struct pcmcia_device *p_dev)
 65{
 66	local_info_t *local;
 67
 68	dev_dbg(&p_dev->dev, "airo_attach()\n");
 69
 70	/* Allocate space for private device-specific data */
 71	local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
 72	if (!local)
 73		return -ENOMEM;
 74
 75	p_dev->priv = local;
 76
 77	return airo_config(p_dev);
 78} /* airo_attach */
 79
 80static void airo_detach(struct pcmcia_device *link)
 81{
 82	dev_dbg(&link->dev, "airo_detach\n");
 83
 84	airo_release(link);
 85
 86	if (((local_info_t *)link->priv)->eth_dev) {
 87		stop_airo_card(((local_info_t *)link->priv)->eth_dev, 0);
 88	}
 89	((local_info_t *)link->priv)->eth_dev = NULL;
 90
 91	kfree(link->priv);
 92} /* airo_detach */
 93
 94static int airo_cs_config_check(struct pcmcia_device *p_dev, void *priv_data)
 95{
 96	if (p_dev->config_index == 0)
 97		return -EINVAL;
 98
 99	return pcmcia_request_io(p_dev);
100}
101
102
103static int airo_config(struct pcmcia_device *link)
104{
105	local_info_t *dev;
106	int ret;
107
108	dev = link->priv;
109
110	dev_dbg(&link->dev, "airo_config\n");
111
112	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
113		CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
114
115	ret = pcmcia_loop_config(link, airo_cs_config_check, NULL);
116	if (ret)
117		goto failed;
118
119	if (!link->irq)
120		goto failed;
121
122	ret = pcmcia_enable_device(link);
123	if (ret)
124		goto failed;
125	((local_info_t *)link->priv)->eth_dev =
126		init_airo_card(link->irq,
127			       link->resource[0]->start, 1, &link->dev);
128	if (!((local_info_t *)link->priv)->eth_dev)
129		goto failed;
130
131	return 0;
132
133 failed:
134	airo_release(link);
135	return -ENODEV;
136} /* airo_config */
137
138static void airo_release(struct pcmcia_device *link)
139{
140	dev_dbg(&link->dev, "airo_release\n");
141	pcmcia_disable_device(link);
142}
143
144static int airo_suspend(struct pcmcia_device *link)
145{
146	local_info_t *local = link->priv;
147
148	netif_device_detach(local->eth_dev);
149
150	return 0;
151}
152
153static int airo_resume(struct pcmcia_device *link)
154{
155	local_info_t *local = link->priv;
156
157	if (link->open) {
158		reset_airo_card(local->eth_dev);
159		netif_device_attach(local->eth_dev);
160	}
161
162	return 0;
163}
164
165static const struct pcmcia_device_id airo_ids[] = {
166	PCMCIA_DEVICE_MANF_CARD(0x015f, 0x000a),
167	PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0005),
168	PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0007),
169	PCMCIA_DEVICE_MANF_CARD(0x0105, 0x0007),
170	PCMCIA_DEVICE_NULL,
171};
172MODULE_DEVICE_TABLE(pcmcia, airo_ids);
173
174static struct pcmcia_driver airo_driver = {
175	.owner		= THIS_MODULE,
176	.name		= "airo_cs",
177	.probe		= airo_probe,
178	.remove		= airo_detach,
179	.id_table       = airo_ids,
180	.suspend	= airo_suspend,
181	.resume		= airo_resume,
182};
183module_pcmcia_driver(airo_driver);
184
185/*
186    This program is free software; you can redistribute it and/or
187    modify it under the terms of the GNU General Public License
188    as published by the Free Software Foundation; either version 2
189    of the License, or (at your option) any later version.
190
191    This program is distributed in the hope that it will be useful,
192    but WITHOUT ANY WARRANTY; without even the implied warranty of
193    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
194    GNU General Public License for more details.
195
196    In addition:
197
198    Redistribution and use in source and binary forms, with or without
199    modification, are permitted provided that the following conditions
200    are met:
201
202    1. Redistributions of source code must retain the above copyright
203       notice, this list of conditions and the following disclaimer.
204    2. Redistributions in binary form must reproduce the above copyright
205       notice, this list of conditions and the following disclaimer in the
206       documentation and/or other materials provided with the distribution.
207    3. The name of the author may not be used to endorse or promote
208       products derived from this software without specific prior written
209       permission.
210
211    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
212    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
213    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
214    ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
215    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
216    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
217    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
218    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
219    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
220    IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
221    POSSIBILITY OF SUCH DAMAGE.
222*/