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