LXR linux/drivers/net/wireless/cisco/airo

   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
  45MODULE_AUTHOR("Benjamin Reed");
  46MODULE_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.");
  49MODULE_LICENSE("Dual BSD/GPL");
  50MODULE_SUPPORTED_DEVICE("Aironet 4500, 4800 and Cisco 340 PCMCIA cards");
  51
  52/*====================================================================*/
  53
  54static int airo_config(struct pcmcia_device *link);
  55static void airo_release(struct pcmcia_device *link);
  56
  57static void airo_detach(struct pcmcia_device *p_dev);
  58
  59struct local_info {
  60        struct net_device *eth_dev;
  61};
  62
  63static 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
  79static 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
  94static 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
 103static 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
 135static void airo_release(struct pcmcia_device *link)
 136{
 137        dev_dbg(&link->dev, "airo_release\n");
 138        pcmcia_disable_device(link);
 139}
 140
 141static 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
 150static 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
 162static 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};
 169MODULE_DEVICE_TABLE(pcmcia, airo_ids);
 170
 171static 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};
 180module_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*/
 220