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