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/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
  47 MODULE_AUTHOR("Benjamin Reed");
  48 MODULE_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.");
  51 MODULE_LICENSE("Dual BSD/GPL");
  52 MODULE_SUPPORTED_DEVICE("Aironet 4500, 4800 and Cisco 340 PCMCIA cards");
  53
  54 /*====================================================================*/
  55
  56 static int airo_config(struct pcmcia_device *link);
  57 static void airo_release(struct pcmcia_device *link);
  58
  59 static void airo_detach(struct pcmcia_device *p_dev);
  60
  61 typedef struct local_info_t {
  62         struct net_device *eth_dev;
  63 } local_info_t;
  64
  65 static 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
  82 static 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
  96 static 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
 105 static 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
 140 static void airo_release(struct pcmcia_device *link)
 141 {
 142         dev_dbg(&link->dev, "airo_release\n");
 143         pcmcia_disable_device(link);
 144 }
 145
 146 static 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
 155 static 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
 167 static 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 };
 174 MODULE_DEVICE_TABLE(pcmcia, airo_ids);
 175
 176 static 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
 186 static int __init airo_cs_init(void)
 187 {
 188         return pcmcia_register_driver(&airo_driver);
 189 }
 190
 191 static 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
 235 module_init(airo_cs_init);
 236 module_exit(airo_cs_cleanup);