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