linux/drivers/net/wireless/airo_cs.c
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   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#include <asm/system.h>
  41
  42#include "airo.h"
  43
  44
  45/*====================================================================*/
  46
  47MODULE_AUTHOR("Benjamin Reed");
  48MODULE_DESCRIPTION("Support for Cisco/Aironet 802.11 wireless ethernet "
  49                   "cards.  This is the module that links the PCMCIA card "
  50                   "with the airo module.");
  51MODULE_LICENSE("Dual BSD/GPL");
  52MODULE_SUPPORTED_DEVICE("Aironet 4500, 4800 and Cisco 340 PCMCIA cards");
  53
  54/*====================================================================*/
  55
  56static int airo_config(struct pcmcia_device *link);
  57static void airo_release(struct pcmcia_device *link);
  58
  59static void airo_detach(struct pcmcia_device *p_dev);
  60
  61typedef struct local_info_t {
  62        struct net_device *eth_dev;
  63} local_info_t;
  64
  65static int airo_probe(struct pcmcia_device *p_dev)
  66{
  67        local_info_t *local;
  68
  69        dev_dbg(&p_dev->dev, "airo_attach()\n");
  70
  71        /* Allocate space for private device-specific data */
  72        local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
  73        if (!local) {
  74                printk(KERN_ERR "airo_cs: no memory for new device\n");
  75                return -ENOMEM;
  76        }
  77        p_dev->priv = local;
  78
  79        return airo_config(p_dev);
  80} /* airo_attach */
  81
  82static void airo_detach(struct pcmcia_device *link)
  83{
  84        dev_dbg(&link->dev, "airo_detach\n");
  85
  86        airo_release(link);
  87
  88        if (((local_info_t *)link->priv)->eth_dev) {
  89                stop_airo_card(((local_info_t *)link->priv)->eth_dev, 0);
  90        }
  91        ((local_info_t *)link->priv)->eth_dev = NULL;
  92
  93        kfree(link->priv);
  94} /* airo_detach */
  95
  96static int airo_cs_config_check(struct pcmcia_device *p_dev, void *priv_data)
  97{
  98        if (p_dev->config_index == 0)
  99                return -EINVAL;
 100
 101        return pcmcia_request_io(p_dev);
 102}
 103
 104
 105static int airo_config(struct pcmcia_device *link)
 106{
 107        local_info_t *dev;
 108        int ret;
 109
 110        dev = link->priv;
 111
 112        dev_dbg(&link->dev, "airo_config\n");
 113
 114        link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
 115                CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
 116
 117        ret = pcmcia_loop_config(link, airo_cs_config_check, NULL);
 118        if (ret)
 119                goto failed;
 120
 121        if (!link->irq)
 122                goto failed;
 123
 124        ret = pcmcia_enable_device(link);
 125        if (ret)
 126                goto failed;
 127        ((local_info_t *)link->priv)->eth_dev =
 128                init_airo_card(link->irq,
 129                               link->resource[0]->start, 1, &link->dev);
 130        if (!((local_info_t *)link->priv)->eth_dev)
 131                goto failed;
 132
 133        return 0;
 134
 135 failed:
 136        airo_release(link);
 137        return -ENODEV;
 138} /* airo_config */
 139
 140static void airo_release(struct pcmcia_device *link)
 141{
 142        dev_dbg(&link->dev, "airo_release\n");
 143        pcmcia_disable_device(link);
 144}
 145
 146static int airo_suspend(struct pcmcia_device *link)
 147{
 148        local_info_t *local = link->priv;
 149
 150        netif_device_detach(local->eth_dev);
 151
 152        return 0;
 153}
 154
 155static int airo_resume(struct pcmcia_device *link)
 156{
 157        local_info_t *local = link->priv;
 158
 159        if (link->open) {
 160                reset_airo_card(local->eth_dev);
 161                netif_device_attach(local->eth_dev);
 162        }
 163
 164        return 0;
 165}
 166
 167static const struct pcmcia_device_id airo_ids[] = {
 168        PCMCIA_DEVICE_MANF_CARD(0x015f, 0x000a),
 169        PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0005),
 170        PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0007),
 171        PCMCIA_DEVICE_MANF_CARD(0x0105, 0x0007),
 172        PCMCIA_DEVICE_NULL,
 173};
 174MODULE_DEVICE_TABLE(pcmcia, airo_ids);
 175
 176static struct pcmcia_driver airo_driver = {
 177        .owner          = THIS_MODULE,
 178        .name           = "airo_cs",
 179        .probe          = airo_probe,
 180        .remove         = airo_detach,
 181        .id_table       = airo_ids,
 182        .suspend        = airo_suspend,
 183        .resume         = airo_resume,
 184};
 185
 186static int __init airo_cs_init(void)
 187{
 188        return pcmcia_register_driver(&airo_driver);
 189}
 190
 191static void __exit airo_cs_cleanup(void)
 192{
 193        pcmcia_unregister_driver(&airo_driver);
 194}
 195
 196/*
 197    This program is free software; you can redistribute it and/or
 198    modify it under the terms of the GNU General Public License
 199    as published by the Free Software Foundation; either version 2
 200    of the License, or (at your option) any later version.
 201
 202    This program is distributed in the hope that it will be useful,
 203    but WITHOUT ANY WARRANTY; without even the implied warranty of
 204    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 205    GNU General Public License for more details.
 206
 207    In addition:
 208
 209    Redistribution and use in source and binary forms, with or without
 210    modification, are permitted provided that the following conditions
 211    are met:
 212
 213    1. Redistributions of source code must retain the above copyright
 214       notice, this list of conditions and the following disclaimer.
 215    2. Redistributions in binary form must reproduce the above copyright
 216       notice, this list of conditions and the following disclaimer in the
 217       documentation and/or other materials provided with the distribution.
 218    3. The name of the author may not be used to endorse or promote
 219       products derived from this software without specific prior written
 220       permission.
 221
 222    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 223    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 224    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 225    ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 226    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 227    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 228    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 229    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 230    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 231    IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 232    POSSIBILITY OF SUCH DAMAGE.
 233*/
 234
 235module_init(airo_cs_init);
 236module_exit(airo_cs_cleanup);
 237
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