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
  41 #include "airo.h"
  42
  43
  44 /*====================================================================*/
  45
  46 MODULE_AUTHOR("Benjamin Reed");
  47 MODULE_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.");
  50 MODULE_LICENSE("Dual BSD/GPL");
  51 MODULE_SUPPORTED_DEVICE("Aironet 4500, 4800 and Cisco 340 PCMCIA cards");
  52
  53 /*====================================================================*/
  54
  55 static int airo_config(struct pcmcia_device *link);
  56 static void airo_release(struct pcmcia_device *link);
  57
  58 static void airo_detach(struct pcmcia_device *p_dev);
  59
  60 typedef struct local_info_t {
  61         struct net_device *eth_dev;
  62 } local_info_t;
  63
  64 static 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                 printk(KERN_ERR "airo_cs: no memory for new device\n");
  74                 return -ENOMEM;
  75         }
  76         p_dev->priv = local;
  77
  78         return airo_config(p_dev);
  79 } /* airo_attach */
  80
  81 static void airo_detach(struct pcmcia_device *link)
  82 {
  83         dev_dbg(&link->dev, "airo_detach\n");
  84
  85         airo_release(link);
  86
  87         if (((local_info_t *)link->priv)->eth_dev) {
  88                 stop_airo_card(((local_info_t *)link->priv)->eth_dev, 0);
  89         }
  90         ((local_info_t *)link->priv)->eth_dev = NULL;
  91
  92         kfree(link->priv);
  93 } /* airo_detach */
  94
  95 static int airo_cs_config_check(struct pcmcia_device *p_dev, void *priv_data)
  96 {
  97         if (p_dev->config_index == 0)
  98                 return -EINVAL;
  99
 100         return pcmcia_request_io(p_dev);
 101 }
 102
 103
 104 static int airo_config(struct pcmcia_device *link)
 105 {
 106         local_info_t *dev;
 107         int ret;
 108
 109         dev = link->priv;
 110
 111         dev_dbg(&link->dev, "airo_config\n");
 112
 113         link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
 114                 CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
 115
 116         ret = pcmcia_loop_config(link, airo_cs_config_check, NULL);
 117         if (ret)
 118                 goto failed;
 119
 120         if (!link->irq)
 121                 goto failed;
 122
 123         ret = pcmcia_enable_device(link);
 124         if (ret)
 125                 goto failed;
 126         ((local_info_t *)link->priv)->eth_dev =
 127                 init_airo_card(link->irq,
 128                                link->resource[0]->start, 1, &link->dev);
 129         if (!((local_info_t *)link->priv)->eth_dev)
 130                 goto failed;
 131
 132         return 0;
 133
 134  failed:
 135         airo_release(link);
 136         return -ENODEV;
 137 } /* airo_config */
 138
 139 static void airo_release(struct pcmcia_device *link)
 140 {
 141         dev_dbg(&link->dev, "airo_release\n");
 142         pcmcia_disable_device(link);
 143 }
 144
 145 static int airo_suspend(struct pcmcia_device *link)
 146 {
 147         local_info_t *local = link->priv;
 148
 149         netif_device_detach(local->eth_dev);
 150
 151         return 0;
 152 }
 153
 154 static int airo_resume(struct pcmcia_device *link)
 155 {
 156         local_info_t *local = link->priv;
 157
 158         if (link->open) {
 159                 reset_airo_card(local->eth_dev);
 160                 netif_device_attach(local->eth_dev);
 161         }
 162
 163         return 0;
 164 }
 165
 166 static const struct pcmcia_device_id airo_ids[] = {
 167         PCMCIA_DEVICE_MANF_CARD(0x015f, 0x000a),
 168         PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0005),
 169         PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0007),
 170         PCMCIA_DEVICE_MANF_CARD(0x0105, 0x0007),
 171         PCMCIA_DEVICE_NULL,
 172 };
 173 MODULE_DEVICE_TABLE(pcmcia, airo_ids);
 174
 175 static struct pcmcia_driver airo_driver = {
 176         .owner          = THIS_MODULE,
 177         .name           = "airo_cs",
 178         .probe          = airo_probe,
 179         .remove         = airo_detach,
 180         .id_table       = airo_ids,
 181         .suspend        = airo_suspend,
 182         .resume         = airo_resume,
 183 };
 184
 185 static int __init airo_cs_init(void)
 186 {
 187         return pcmcia_register_driver(&airo_driver);
 188 }
 189
 190 static void __exit airo_cs_cleanup(void)
 191 {
 192         pcmcia_unregister_driver(&airo_driver);
 193 }
 194
 195 /*
 196     This program is free software; you can redistribute it and/or
 197     modify it under the terms of the GNU General Public License
 198     as published by the Free Software Foundation; either version 2
 199     of the License, or (at your option) any later version.
 200
 201     This program is distributed in the hope that it will be useful,
 202     but WITHOUT ANY WARRANTY; without even the implied warranty of
 203     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 204     GNU General Public License for more details.
 205
 206     In addition:
 207
 208     Redistribution and use in source and binary forms, with or without
 209     modification, are permitted provided that the following conditions
 210     are met:
 211
 212     1. Redistributions of source code must retain the above copyright
 213        notice, this list of conditions and the following disclaimer.
 214     2. Redistributions in binary form must reproduce the above copyright
 215        notice, this list of conditions and the following disclaimer in the
 216        documentation and/or other materials provided with the distribution.
 217     3. The name of the author may not be used to endorse or promote
 218        products derived from this software without specific prior written
 219        permission.
 220
 221     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 222     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 223     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 224     ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 225     INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 226     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 227     SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 228     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 229     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 230     IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 231     POSSIBILITY OF SUCH DAMAGE.
 232 */
 233
 234 module_init(airo_cs_init);
 235 module_exit(airo_cs_cleanup);