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Linux/drivers/net/wireless/airo_cs.c

  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/kernel.h>
 27 #include <linux/module.h>
 28 #include <linux/ptrace.h>
 29 #include <linux/slab.h>
 30 #include <linux/string.h>
 31 #include <linux/timer.h>
 32 #include <linux/netdevice.h>
 33 
 34 #include <pcmcia/cistpl.h>
 35 #include <pcmcia/cisreg.h>
 36 #include <pcmcia/ds.h>
 37 
 38 #include <linux/io.h>
 39 
 40 #include "airo.h"
 41 
 42 
 43 /*====================================================================*/
 44 
 45 MODULE_AUTHOR("Benjamin Reed");
 46 MODULE_DESCRIPTION("Support for Cisco/Aironet 802.11 wireless ethernet "
 47                    "cards.  This is the module that links the PCMCIA card "
 48                    "with the airo module.");
 49 MODULE_LICENSE("Dual BSD/GPL");
 50 MODULE_SUPPORTED_DEVICE("Aironet 4500, 4800 and Cisco 340 PCMCIA cards");
 51 
 52 /*====================================================================*/
 53 
 54 static int airo_config(struct pcmcia_device *link);
 55 static void airo_release(struct pcmcia_device *link);
 56 
 57 static void airo_detach(struct pcmcia_device *p_dev);
 58 
 59 struct local_info {
 60         struct net_device *eth_dev;
 61 };
 62 
 63 static int airo_probe(struct pcmcia_device *p_dev)
 64 {
 65         struct local_info *local;
 66 
 67         dev_dbg(&p_dev->dev, "airo_attach()\n");
 68 
 69         /* Allocate space for private device-specific data */
 70         local = kzalloc(sizeof(*local), GFP_KERNEL);
 71         if (!local)
 72                 return -ENOMEM;
 73 
 74         p_dev->priv = local;
 75 
 76         return airo_config(p_dev);
 77 } /* airo_attach */
 78 
 79 static void airo_detach(struct pcmcia_device *link)
 80 {
 81         dev_dbg(&link->dev, "airo_detach\n");
 82 
 83         airo_release(link);
 84 
 85         if (((struct local_info *)link->priv)->eth_dev) {
 86                 stop_airo_card(((struct local_info *)link->priv)->eth_dev,
 87                                0);
 88         }
 89         ((struct local_info *)link->priv)->eth_dev = NULL;
 90 
 91         kfree(link->priv);
 92 } /* airo_detach */
 93 
 94 static 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 
103 static int airo_config(struct pcmcia_device *link)
104 {
105         struct local_info *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         ((struct local_info *)link->priv)->eth_dev =
126                 init_airo_card(link->irq,
127                                link->resource[0]->start, 1, &link->dev);
128         if (!((struct local_info *)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 
138 static void airo_release(struct pcmcia_device *link)
139 {
140         dev_dbg(&link->dev, "airo_release\n");
141         pcmcia_disable_device(link);
142 }
143 
144 static int airo_suspend(struct pcmcia_device *link)
145 {
146         struct local_info *local = link->priv;
147 
148         netif_device_detach(local->eth_dev);
149 
150         return 0;
151 }
152 
153 static int airo_resume(struct pcmcia_device *link)
154 {
155         struct local_info *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 
165 static 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 };
172 MODULE_DEVICE_TABLE(pcmcia, airo_ids);
173 
174 static 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 };
183 module_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 */
223 

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