1 /*** -*- linux-c -*- **********************************************************
3 Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
5 Copyright 2000-2001 ATMEL Corporation.
6 Copyright 2003 Simon Kelley.
8 This code was developed from version 2.1.1 of the Atmel drivers,
9 released by Atmel corp. under the GPL in December 2002. It also
10 includes code from the Linux aironet drivers (C) Benjamin Reed,
11 and the Linux PCMCIA package, (C) David Hinds.
13 For all queries about this code, please contact the current author,
14 Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
16 This program is free software; you can redistribute it and/or modify
17 it under the terms of the GNU General Public License as published by
18 the Free Software Foundation; either version 2 of the License, or
19 (at your option) any later version.
21 This software is distributed in the hope that it will be useful,
22 but WITHOUT ANY WARRANTY; without even the implied warranty of
23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 GNU General Public License for more details.
26 You should have received a copy of the GNU General Public License
27 along with Atmel wireless lan drivers; if not, write to the Free Software
28 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 ******************************************************************************/
32 #ifdef __IN_PCMCIA_PACKAGE__
33 #include <pcmcia/k_compat.h>
35 #include <linux/init.h>
36 #include <linux/kernel.h>
37 #include <linux/module.h>
38 #include <linux/ptrace.h>
39 #include <linux/slab.h>
40 #include <linux/string.h>
41 #include <linux/netdevice.h>
42 #include <linux/moduleparam.h>
43 #include <linux/device.h>
45 #include <pcmcia/cistpl.h>
46 #include <pcmcia/cisreg.h>
47 #include <pcmcia/ds.h>
48 #include <pcmcia/ciscode.h>
51 #include <asm/system.h>
52 #include <linux/wireless.h>
57 /*====================================================================*/
59 MODULE_AUTHOR("Simon Kelley");
60 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
61 MODULE_LICENSE("GPL");
62 MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");
64 /*====================================================================*/
67 The event() function is this driver's Card Services event handler.
68 It will be called by Card Services when an appropriate card status
69 event is received. The config() and release() entry points are
70 used to configure or release a socket, in response to card
71 insertion and ejection events. They are invoked from the atmel_cs
75 static int atmel_config(struct pcmcia_device
*link
);
76 static void atmel_release(struct pcmcia_device
*link
);
79 The attach() and detach() entry points are used to create and destroy
80 "instances" of the driver, where each instance represents everything
81 needed to manage one actual PCMCIA card.
84 static void atmel_detach(struct pcmcia_device
*p_dev
);
86 typedef struct local_info_t
{
87 struct net_device
*eth_dev
;
90 /*======================================================================
92 atmel_attach() creates an "instance" of the driver, allocating
93 local data structures for one device. The device is registered
96 The dev_link structure is initialized, but we don't actually
97 configure the card at this point -- we wait until we receive a
100 ======================================================================*/
102 static int atmel_probe(struct pcmcia_device
*p_dev
)
106 dev_dbg(&p_dev
->dev
, "atmel_attach()\n");
108 /* Allocate space for private device-specific data */
109 local
= kzalloc(sizeof(local_info_t
), GFP_KERNEL
);
111 printk(KERN_ERR
"atmel_cs: no memory for new device\n");
116 return atmel_config(p_dev
);
119 /*======================================================================
121 This deletes a driver "instance". The device is de-registered
122 with Card Services. If it has been released, all local data
123 structures are freed. Otherwise, the structures will be freed
124 when the device is released.
126 ======================================================================*/
128 static void atmel_detach(struct pcmcia_device
*link
)
130 dev_dbg(&link
->dev
, "atmel_detach\n");
137 /*======================================================================
139 atmel_config() is scheduled to run after a CARD_INSERTION event
140 is received, to configure the PCMCIA socket, and to make the
141 device available to the system.
143 ======================================================================*/
145 /* Call-back function to interrogate PCMCIA-specific information
146 about the current existance of the card */
147 static int card_present(void *arg
)
149 struct pcmcia_device
*link
= (struct pcmcia_device
*)arg
;
151 if (pcmcia_dev_present(link
))
157 static int atmel_config_check(struct pcmcia_device
*p_dev
, void *priv_data
)
159 if (p_dev
->config_index
== 0)
162 return pcmcia_request_io(p_dev
);
165 static int atmel_config(struct pcmcia_device
*link
)
169 struct pcmcia_device_id
*did
;
172 did
= dev_get_drvdata(&link
->dev
);
174 dev_dbg(&link
->dev
, "atmel_config\n");
176 link
->config_flags
|= CONF_ENABLE_IRQ
| CONF_AUTO_SET_VPP
|
177 CONF_AUTO_AUDIO
| CONF_AUTO_SET_IO
;
180 In this loop, we scan the CIS for configuration table entries,
181 each of which describes a valid card configuration, including
182 voltage, IO window, memory window, and interrupt settings.
184 We make no assumptions about the card to be configured: we use
185 just the information available in the CIS. In an ideal world,
186 this would work for any PCMCIA card, but it requires a complete
187 and accurate CIS. In practice, a driver usually "knows" most of
188 these things without consulting the CIS, and most client drivers
189 will only use the CIS to fill in implementation-defined details.
191 if (pcmcia_loop_config(link
, atmel_config_check
, NULL
))
195 dev_err(&link
->dev
, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
200 This actually configures the PCMCIA socket -- setting up
201 the I/O windows and the interrupt mapping, and putting the
202 card and host interface into "Memory and IO" mode.
204 ret
= pcmcia_enable_device(link
);
208 ((local_info_t
*)link
->priv
)->eth_dev
=
209 init_atmel_card(link
->irq
,
210 link
->resource
[0]->start
,
211 did
? did
->driver_info
: ATMEL_FW_TYPE_NONE
,
215 if (!((local_info_t
*)link
->priv
)->eth_dev
)
226 /*======================================================================
228 After a card is removed, atmel_release() will unregister the
229 device, and release the PCMCIA configuration. If the device is
230 still open, this will be postponed until it is closed.
232 ======================================================================*/
234 static void atmel_release(struct pcmcia_device
*link
)
236 struct net_device
*dev
= ((local_info_t
*)link
->priv
)->eth_dev
;
238 dev_dbg(&link
->dev
, "atmel_release\n");
241 stop_atmel_card(dev
);
242 ((local_info_t
*)link
->priv
)->eth_dev
= NULL
;
244 pcmcia_disable_device(link
);
247 static int atmel_suspend(struct pcmcia_device
*link
)
249 local_info_t
*local
= link
->priv
;
251 netif_device_detach(local
->eth_dev
);
256 static int atmel_resume(struct pcmcia_device
*link
)
258 local_info_t
*local
= link
->priv
;
260 atmel_open(local
->eth_dev
);
261 netif_device_attach(local
->eth_dev
);
266 /*====================================================================*/
267 /* We use the driver_info field to store the correct firmware type for a card. */
269 #define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
270 .match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
271 PCMCIA_DEV_ID_MATCH_CARD_ID, \
274 .driver_info = (kernel_ulong_t)(info), }
276 #define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
277 .match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
278 PCMCIA_DEV_ID_MATCH_PROD_ID2, \
279 .prod_id = { (v1), (v2), NULL, NULL }, \
280 .prod_id_hash = { (vh1), (vh2), 0, 0 }, \
281 .driver_info = (kernel_ulong_t)(info), }
283 static struct pcmcia_device_id atmel_ids
[] = {
284 PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM
),
285 PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM
),
286 PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E
),
287 PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502
),
288 PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E
),
289 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502
),
290 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D
),
291 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E
),
292 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958
),
293 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504
),
294 PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958
),
295 PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502
),
296 PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E
),
297 PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502
),
298 PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958
),
299 PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502
),
300 PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D
),
301 PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502
),
302 PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D
),
303 PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D
),
304 PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E
),
308 MODULE_DEVICE_TABLE(pcmcia
, atmel_ids
);
310 static struct pcmcia_driver atmel_driver
= {
311 .owner
= THIS_MODULE
,
315 .probe
= atmel_probe
,
316 .remove
= atmel_detach
,
317 .id_table
= atmel_ids
,
318 .suspend
= atmel_suspend
,
319 .resume
= atmel_resume
,
322 static int atmel_cs_init(void)
324 return pcmcia_register_driver(&atmel_driver
);
327 static void atmel_cs_cleanup(void)
329 pcmcia_unregister_driver(&atmel_driver
);
333 This program is free software; you can redistribute it and/or
334 modify it under the terms of the GNU General Public License
335 as published by the Free Software Foundation; either version 2
336 of the License, or (at your option) any later version.
338 This program is distributed in the hope that it will be useful,
339 but WITHOUT ANY WARRANTY; without even the implied warranty of
340 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
341 GNU General Public License for more details.
345 Redistribution and use in source and binary forms, with or without
346 modification, are permitted provided that the following conditions
349 1. Redistributions of source code must retain the above copyright
350 notice, this list of conditions and the following disclaimer.
351 2. Redistributions in binary form must reproduce the above copyright
352 notice, this list of conditions and the following disclaimer in the
353 documentation and/or other materials provided with the distribution.
354 3. The name of the author may not be used to endorse or promote
355 products derived from this software without specific prior written
358 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
359 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
360 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
361 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
362 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
363 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
364 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
365 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
366 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
367 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
368 POSSIBILITY OF SUCH DAMAGE.
371 module_init(atmel_cs_init
);
372 module_exit(atmel_cs_cleanup
);