1 /*======================================================================
3 Aironet driver for 4500 and 4800 series cards
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
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
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.
21 ======================================================================*/
23 #ifdef __IN_PCMCIA_PACKAGE__
24 #include <pcmcia/k_compat.h>
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>
35 #include <pcmcia/cistpl.h>
36 #include <pcmcia/cisreg.h>
37 #include <pcmcia/ds.h>
40 #include <asm/system.h>
45 /*====================================================================*/
47 MODULE_AUTHOR("Benjamin Reed");
48 MODULE_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.");
51 MODULE_LICENSE("Dual BSD/GPL");
52 MODULE_SUPPORTED_DEVICE("Aironet 4500, 4800 and Cisco 340 PCMCIA cards");
54 /*====================================================================*/
57 The event() function is this driver's Card Services event handler.
58 It will be called by Card Services when an appropriate card status
59 event is received. The config() and release() entry points are
60 used to configure or release a socket, in response to card
61 insertion and ejection events. They are invoked from the airo_cs
65 static int airo_config(struct pcmcia_device *link);
66 static void airo_release(struct pcmcia_device *link);
69 The attach() and detach() entry points are used to create and destroy
70 "instances" of the driver, where each instance represents everything
71 needed to manage one actual PCMCIA card.
74 static void airo_detach(struct pcmcia_device *p_dev);
76 typedef struct local_info_t {
77 struct net_device *eth_dev;
80 /*======================================================================
82 airo_attach() creates an "instance" of the driver, allocating
83 local data structures for one device. The device is registered
86 The dev_link structure is initialized, but we don't actually
87 configure the card at this point -- we wait until we receive a
90 ======================================================================*/
92 static int airo_probe(struct pcmcia_device *p_dev)
96 dev_dbg(&p_dev->dev, "airo_attach()\n");
98 /* Allocate space for private device-specific data */
99 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
101 printk(KERN_ERR "airo_cs: no memory for new device\n");
106 return airo_config(p_dev);
109 /*======================================================================
111 This deletes a driver "instance". The device is de-registered
112 with Card Services. If it has been released, all local data
113 structures are freed. Otherwise, the structures will be freed
114 when the device is released.
116 ======================================================================*/
118 static void airo_detach(struct pcmcia_device *link)
120 dev_dbg(&link->dev, "airo_detach\n");
124 if (((local_info_t *)link->priv)->eth_dev) {
125 stop_airo_card(((local_info_t *)link->priv)->eth_dev, 0);
127 ((local_info_t *)link->priv)->eth_dev = NULL;
132 /*======================================================================
134 airo_config() is scheduled to run after a CARD_INSERTION event
135 is received, to configure the PCMCIA socket, and to make the
136 device available to the system.
138 ======================================================================*/
140 static int airo_cs_config_check(struct pcmcia_device *p_dev, void *priv_data)
142 if (p_dev->config_index == 0)
145 return pcmcia_request_io(p_dev);
149 static int airo_config(struct pcmcia_device *link)
156 dev_dbg(&link->dev, "airo_config\n");
158 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
159 CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
162 * In this loop, we scan the CIS for configuration table
163 * entries, each of which describes a valid card
164 * configuration, including voltage, IO window, memory window,
165 * and interrupt settings.
167 * We make no assumptions about the card to be configured: we
168 * use just the information available in the CIS. In an ideal
169 * world, this would work for any PCMCIA card, but it requires
170 * a complete and accurate CIS. In practice, a driver usually
171 * "knows" most of these things without consulting the CIS,
172 * and most client drivers will only use the CIS to fill in
173 * implementation-defined details.
175 ret = pcmcia_loop_config(link, airo_cs_config_check, NULL);
183 This actually configures the PCMCIA socket -- setting up
184 the I/O windows and the interrupt mapping, and putting the
185 card and host interface into "Memory and IO" mode.
187 ret = pcmcia_enable_device(link);
190 ((local_info_t *)link->priv)->eth_dev =
191 init_airo_card(link->irq,
192 link->resource[0]->start, 1, &link->dev);
193 if (!((local_info_t *)link->priv)->eth_dev)
203 /*======================================================================
205 After a card is removed, airo_release() will unregister the
206 device, and release the PCMCIA configuration. If the device is
207 still open, this will be postponed until it is closed.
209 ======================================================================*/
211 static void airo_release(struct pcmcia_device *link)
213 dev_dbg(&link->dev, "airo_release\n");
214 pcmcia_disable_device(link);
217 static int airo_suspend(struct pcmcia_device *link)
219 local_info_t *local = link->priv;
221 netif_device_detach(local->eth_dev);
226 static int airo_resume(struct pcmcia_device *link)
228 local_info_t *local = link->priv;
231 reset_airo_card(local->eth_dev);
232 netif_device_attach(local->eth_dev);
238 static struct pcmcia_device_id airo_ids[] = {
239 PCMCIA_DEVICE_MANF_CARD(0x015f, 0x000a),
240 PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0005),
241 PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0007),
242 PCMCIA_DEVICE_MANF_CARD(0x0105, 0x0007),
245 MODULE_DEVICE_TABLE(pcmcia, airo_ids);
247 static struct pcmcia_driver airo_driver = {
248 .owner = THIS_MODULE,
253 .remove = airo_detach,
254 .id_table = airo_ids,
255 .suspend = airo_suspend,
256 .resume = airo_resume,
259 static int airo_cs_init(void)
261 return pcmcia_register_driver(&airo_driver);
264 static void airo_cs_cleanup(void)
266 pcmcia_unregister_driver(&airo_driver);
270 This program is free software; you can redistribute it and/or
271 modify it under the terms of the GNU General Public License
272 as published by the Free Software Foundation; either version 2
273 of the License, or (at your option) any later version.
275 This program is distributed in the hope that it will be useful,
276 but WITHOUT ANY WARRANTY; without even the implied warranty of
277 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
278 GNU General Public License for more details.
282 Redistribution and use in source and binary forms, with or without
283 modification, are permitted provided that the following conditions
286 1. Redistributions of source code must retain the above copyright
287 notice, this list of conditions and the following disclaimer.
288 2. Redistributions in binary form must reproduce the above copyright
289 notice, this list of conditions and the following disclaimer in the
290 documentation and/or other materials provided with the distribution.
291 3. The name of the author may not be used to endorse or promote
292 products derived from this software without specific prior written
295 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
296 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
297 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
298 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
299 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
300 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
301 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
302 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
303 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
304 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
305 POSSIBILITY OF SUCH DAMAGE.
308 module_init(airo_cs_init);
309 module_exit(airo_cs_cleanup);