wireless/cisco/airo_cs.c

0001 /*======================================================================
0002
0003     Aironet driver for 4500 and 4800 series cards
0004
0005     This code is released under both the GPL version 2 and BSD licenses.
0006     Either license may be used.  The respective licenses are found at
0007     the end of this file.
0008
0009     This code was developed by Benjamin Reed <breed@users.sourceforge.net>
0010     including portions of which come from the Aironet PC4500
0011     Developer's Reference Manual and used with permission.  Copyright
0012     (C) 1999 Benjamin Reed.  All Rights Reserved.  Permission to use
0013     code in the Developer's manual was granted for this driver by
0014     Aironet.
0015
0016     In addition this module was derived from dummy_cs.
0017     The initial developer of dummy_cs is David A. Hinds
0018     <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
0019     are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
0020
0021 ======================================================================*/
0022
0023 #ifdef __IN_PCMCIA_PACKAGE__
0024 #include <pcmcia/k_compat.h>
0025 #endif
0026 #include <linux/kernel.h>
0027 #include <linux/module.h>
0028 #include <linux/ptrace.h>
0029 #include <linux/slab.h>
0030 #include <linux/string.h>
0031 #include <linux/timer.h>
0032 #include <linux/netdevice.h>
0033
0034 #include <pcmcia/cistpl.h>
0035 #include <pcmcia/cisreg.h>
0036 #include <pcmcia/ds.h>
0037
0038 #include <linux/io.h>
0039
0040 #include "airo.h"
0041
0042
0043 /*====================================================================*/
0044
0045 MODULE_AUTHOR("Benjamin Reed");
0046 MODULE_DESCRIPTION("Support for Cisco/Aironet 802.11 wireless ethernet "
0047            "cards.  This is the module that links the PCMCIA card "
0048            "with the airo module.");
0049 MODULE_LICENSE("Dual BSD/GPL");
0050
0051 /*====================================================================*/
0052
0053 static int airo_config(struct pcmcia_device *link);
0054 static void airo_release(struct pcmcia_device *link);
0055
0056 static void airo_detach(struct pcmcia_device *p_dev);
0057
0058 struct local_info {
0059     struct net_device *eth_dev;
0060 };
0061
0062 static int airo_probe(struct pcmcia_device *p_dev)
0063 {
0064     struct local_info *local;
0065
0066     dev_dbg(&p_dev->dev, "airo_attach()\n");
0067
0068     /* Allocate space for private device-specific data */
0069     local = kzalloc(sizeof(*local), GFP_KERNEL);
0070     if (!local)
0071         return -ENOMEM;
0072
0073     p_dev->priv = local;
0074
0075     return airo_config(p_dev);
0076 } /* airo_attach */
0077
0078 static void airo_detach(struct pcmcia_device *link)
0079 {
0080     dev_dbg(&link->dev, "airo_detach\n");
0081
0082     airo_release(link);
0083
0084     if (((struct local_info *)link->priv)->eth_dev) {
0085         stop_airo_card(((struct local_info *)link->priv)->eth_dev,
0086                    0);
0087     }
0088     ((struct local_info *)link->priv)->eth_dev = NULL;
0089
0090     kfree(link->priv);
0091 } /* airo_detach */
0092
0093 static int airo_cs_config_check(struct pcmcia_device *p_dev, void *priv_data)
0094 {
0095     if (p_dev->config_index == 0)
0096         return -EINVAL;
0097
0098     return pcmcia_request_io(p_dev);
0099 }
0100
0101
0102 static int airo_config(struct pcmcia_device *link)
0103 {
0104     int ret;
0105
0106     dev_dbg(&link->dev, "airo_config\n");
0107
0108     link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
0109         CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
0110
0111     ret = pcmcia_loop_config(link, airo_cs_config_check, NULL);
0112     if (ret)
0113         goto failed;
0114
0115     if (!link->irq)
0116         goto failed;
0117
0118     ret = pcmcia_enable_device(link);
0119     if (ret)
0120         goto failed;
0121     ((struct local_info *)link->priv)->eth_dev =
0122         init_airo_card(link->irq,
0123                    link->resource[0]->start, 1, &link->dev);
0124     if (!((struct local_info *)link->priv)->eth_dev)
0125         goto failed;
0126
0127     return 0;
0128
0129  failed:
0130     airo_release(link);
0131     return -ENODEV;
0132 } /* airo_config */
0133
0134 static void airo_release(struct pcmcia_device *link)
0135 {
0136     dev_dbg(&link->dev, "airo_release\n");
0137     pcmcia_disable_device(link);
0138 }
0139
0140 static int airo_suspend(struct pcmcia_device *link)
0141 {
0142     struct local_info *local = link->priv;
0143
0144     netif_device_detach(local->eth_dev);
0145
0146     return 0;
0147 }
0148
0149 static int airo_resume(struct pcmcia_device *link)
0150 {
0151     struct local_info *local = link->priv;
0152
0153     if (link->open) {
0154         reset_airo_card(local->eth_dev);
0155         netif_device_attach(local->eth_dev);
0156     }
0157
0158     return 0;
0159 }
0160
0161 static const struct pcmcia_device_id airo_ids[] = {
0162     PCMCIA_DEVICE_MANF_CARD(0x015f, 0x000a),
0163     PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0005),
0164     PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0007),
0165     PCMCIA_DEVICE_MANF_CARD(0x0105, 0x0007),
0166     PCMCIA_DEVICE_NULL,
0167 };
0168 MODULE_DEVICE_TABLE(pcmcia, airo_ids);
0169
0170 static struct pcmcia_driver airo_driver = {
0171     .owner      = THIS_MODULE,
0172     .name       = "airo_cs",
0173     .probe      = airo_probe,
0174     .remove     = airo_detach,
0175     .id_table       = airo_ids,
0176     .suspend    = airo_suspend,
0177     .resume     = airo_resume,
0178 };
0179 module_pcmcia_driver(airo_driver);
0180
0181 /*
0182     This program is free software; you can redistribute it and/or
0183     modify it under the terms of the GNU General Public License
0184     as published by the Free Software Foundation; either version 2
0185     of the License, or (at your option) any later version.
0186
0187     This program is distributed in the hope that it will be useful,
0188     but WITHOUT ANY WARRANTY; without even the implied warranty of
0189     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
0190     GNU General Public License for more details.
0191
0192     In addition:
0193
0194     Redistribution and use in source and binary forms, with or without
0195     modification, are permitted provided that the following conditions
0196     are met:
0197
0198     1. Redistributions of source code must retain the above copyright
0199        notice, this list of conditions and the following disclaimer.
0200     2. Redistributions in binary form must reproduce the above copyright
0201        notice, this list of conditions and the following disclaimer in the
0202        documentation and/or other materials provided with the distribution.
0203     3. The name of the author may not be used to endorse or promote
0204        products derived from this software without specific prior written
0205        permission.
0206
0207     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
0208     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
0209     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0210     ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
0211     INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
0212     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
0213     SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
0214     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
0215     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
0216     IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0217     POSSIBILITY OF SUCH DAMAGE.
0218 */