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1da177e4 LT |
1 | /*** -*- linux-c -*- ********************************************************** |
2 | ||
3 | Driver for Atmel at76c502 at76c504 and at76c506 wireless cards. | |
4 | ||
5 | Copyright 2000-2001 ATMEL Corporation. | |
6 | Copyright 2003 Simon Kelley. | |
7 | ||
5c877fe5 DT |
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. | |
1da177e4 | 12 | |
5c877fe5 | 13 | For all queries about this code, please contact the current author, |
1da177e4 LT |
14 | Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation. |
15 | ||
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. | |
20 | ||
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. | |
25 | ||
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 | |
29 | ||
30 | ******************************************************************************/ | |
31 | ||
1da177e4 LT |
32 | #ifdef __IN_PCMCIA_PACKAGE__ |
33 | #include <pcmcia/k_compat.h> | |
34 | #endif | |
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> | |
44 | ||
1da177e4 LT |
45 | #include <pcmcia/cistpl.h> |
46 | #include <pcmcia/cisreg.h> | |
47 | #include <pcmcia/ds.h> | |
48 | #include <pcmcia/ciscode.h> | |
49 | ||
50 | #include <asm/io.h> | |
51 | #include <asm/system.h> | |
52 | #include <linux/wireless.h> | |
53 | ||
54 | #include "atmel.h" | |
55 | ||
1da177e4 LT |
56 | |
57 | /*====================================================================*/ | |
58 | ||
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"); | |
63 | ||
64 | /*====================================================================*/ | |
65 | ||
66 | /* | |
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 | |
5c877fe5 | 72 | event handler. |
1da177e4 LT |
73 | */ |
74 | ||
15b99ac1 | 75 | static int atmel_config(struct pcmcia_device *link); |
fba395ee | 76 | static void atmel_release(struct pcmcia_device *link); |
1da177e4 LT |
77 | |
78 | /* | |
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. | |
82 | */ | |
83 | ||
cc3b4866 | 84 | static void atmel_detach(struct pcmcia_device *p_dev); |
1da177e4 | 85 | |
1da177e4 | 86 | typedef struct local_info_t { |
1da177e4 LT |
87 | struct net_device *eth_dev; |
88 | } local_info_t; | |
89 | ||
90 | /*====================================================================== | |
5c877fe5 | 91 | |
1da177e4 LT |
92 | atmel_attach() creates an "instance" of the driver, allocating |
93 | local data structures for one device. The device is registered | |
94 | with Card Services. | |
5c877fe5 | 95 | |
1da177e4 LT |
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 | |
98 | card insertion event. | |
5c877fe5 | 99 | |
1da177e4 LT |
100 | ======================================================================*/ |
101 | ||
15b99ac1 | 102 | static int atmel_probe(struct pcmcia_device *p_dev) |
1da177e4 | 103 | { |
1da177e4 | 104 | local_info_t *local; |
f8cfa618 | 105 | |
2caff147 | 106 | dev_dbg(&p_dev->dev, "atmel_attach()\n"); |
1da177e4 | 107 | |
1da177e4 | 108 | /* Allocate space for private device-specific data */ |
b69a3aa8 | 109 | local = kzalloc(sizeof(local_info_t), GFP_KERNEL); |
1da177e4 LT |
110 | if (!local) { |
111 | printk(KERN_ERR "atmel_cs: no memory for new device\n"); | |
f8cfa618 | 112 | return -ENOMEM; |
1da177e4 | 113 | } |
fd238232 | 114 | p_dev->priv = local; |
f8cfa618 | 115 | |
15b99ac1 | 116 | return atmel_config(p_dev); |
1da177e4 LT |
117 | } /* atmel_attach */ |
118 | ||
119 | /*====================================================================== | |
5c877fe5 | 120 | |
1da177e4 LT |
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. | |
5c877fe5 | 125 | |
1da177e4 LT |
126 | ======================================================================*/ |
127 | ||
fba395ee | 128 | static void atmel_detach(struct pcmcia_device *link) |
1da177e4 | 129 | { |
2caff147 | 130 | dev_dbg(&link->dev, "atmel_detach\n"); |
1da177e4 | 131 | |
e2d40963 | 132 | atmel_release(link); |
b4635811 | 133 | |
b4558ea9 | 134 | kfree(link->priv); |
1da177e4 LT |
135 | } |
136 | ||
137 | /*====================================================================== | |
5c877fe5 | 138 | |
1da177e4 LT |
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. | |
5c877fe5 | 142 | |
1da177e4 LT |
143 | ======================================================================*/ |
144 | ||
1da177e4 LT |
145 | /* Call-back function to interrogate PCMCIA-specific information |
146 | about the current existance of the card */ | |
147 | static int card_present(void *arg) | |
9940ec36 | 148 | { |
fba395ee | 149 | struct pcmcia_device *link = (struct pcmcia_device *)arg; |
9940ec36 DB |
150 | |
151 | if (pcmcia_dev_present(link)) | |
1da177e4 | 152 | return 1; |
9940ec36 | 153 | |
1da177e4 LT |
154 | return 0; |
155 | } | |
156 | ||
00990e7c | 157 | static int atmel_config_check(struct pcmcia_device *p_dev, void *priv_data) |
b54bf94b | 158 | { |
00990e7c DB |
159 | if (p_dev->config_index == 0) |
160 | return -EINVAL; | |
b54bf94b | 161 | |
90abdc3b | 162 | return pcmcia_request_io(p_dev); |
b54bf94b DB |
163 | } |
164 | ||
15b99ac1 | 165 | static int atmel_config(struct pcmcia_device *link) |
1da177e4 | 166 | { |
1da177e4 | 167 | local_info_t *dev; |
2caff147 | 168 | int ret; |
b16a228d | 169 | struct pcmcia_device_id *did; |
170 | ||
1da177e4 | 171 | dev = link->priv; |
dd2e5a15 | 172 | did = dev_get_drvdata(&link->dev); |
1da177e4 | 173 | |
2caff147 | 174 | dev_dbg(&link->dev, "atmel_config\n"); |
5c877fe5 | 175 | |
440eed43 | 176 | link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP | |
00990e7c | 177 | CONF_AUTO_AUDIO | CONF_AUTO_SET_IO; |
440eed43 | 178 | |
1da177e4 LT |
179 | /* |
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. | |
5c877fe5 | 183 | |
1da177e4 LT |
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. | |
190 | */ | |
8e2fc39d | 191 | if (pcmcia_loop_config(link, atmel_config_check, NULL)) |
b54bf94b | 192 | goto failed; |
5c877fe5 | 193 | |
eb14120f DB |
194 | if (!link->irq) { |
195 | dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config."); | |
196 | goto failed; | |
2caff147 | 197 | } |
5c877fe5 | 198 | |
1da177e4 LT |
199 | /* |
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. | |
203 | */ | |
1ac71e5a | 204 | ret = pcmcia_enable_device(link); |
2caff147 DB |
205 | if (ret) |
206 | goto failed; | |
5c877fe5 | 207 | |
5c877fe5 | 208 | ((local_info_t*)link->priv)->eth_dev = |
eb14120f | 209 | init_atmel_card(link->irq, |
9a017a91 | 210 | link->resource[0]->start, |
b16a228d | 211 | did ? did->driver_info : ATMEL_FW_TYPE_NONE, |
dd2e5a15 | 212 | &link->dev, |
5c877fe5 | 213 | card_present, |
1da177e4 | 214 | link); |
5c877fe5 | 215 | if (!((local_info_t*)link->priv)->eth_dev) |
2caff147 | 216 | goto failed; |
5c877fe5 DT |
217 | |
218 | ||
15b99ac1 | 219 | return 0; |
e2d40963 | 220 | |
b54bf94b | 221 | failed: |
1da177e4 | 222 | atmel_release(link); |
15b99ac1 | 223 | return -ENODEV; |
1da177e4 LT |
224 | } |
225 | ||
226 | /*====================================================================== | |
5c877fe5 | 227 | |
1da177e4 LT |
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. | |
5c877fe5 | 231 | |
1da177e4 LT |
232 | ======================================================================*/ |
233 | ||
fba395ee | 234 | static void atmel_release(struct pcmcia_device *link) |
1da177e4 LT |
235 | { |
236 | struct net_device *dev = ((local_info_t*)link->priv)->eth_dev; | |
5f2a71fc | 237 | |
2caff147 | 238 | dev_dbg(&link->dev, "atmel_release\n"); |
5f2a71fc DB |
239 | |
240 | if (dev) | |
b16a228d | 241 | stop_atmel_card(dev); |
5f2a71fc DB |
242 | ((local_info_t*)link->priv)->eth_dev = NULL; |
243 | ||
fba395ee | 244 | pcmcia_disable_device(link); |
1da177e4 LT |
245 | } |
246 | ||
fba395ee | 247 | static int atmel_suspend(struct pcmcia_device *link) |
98e4c28b | 248 | { |
98e4c28b DB |
249 | local_info_t *local = link->priv; |
250 | ||
e2d40963 | 251 | netif_device_detach(local->eth_dev); |
98e4c28b DB |
252 | |
253 | return 0; | |
254 | } | |
255 | ||
fba395ee | 256 | static int atmel_resume(struct pcmcia_device *link) |
98e4c28b | 257 | { |
98e4c28b DB |
258 | local_info_t *local = link->priv; |
259 | ||
e2d40963 DB |
260 | atmel_open(local->eth_dev); |
261 | netif_device_attach(local->eth_dev); | |
98e4c28b DB |
262 | |
263 | return 0; | |
264 | } | |
265 | ||
1da177e4 | 266 | /*====================================================================*/ |
b16a228d | 267 | /* We use the driver_info field to store the correct firmware type for a card. */ |
268 | ||
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, \ | |
272 | .manf_id = (manf), \ | |
273 | .card_id = (card), \ | |
274 | .driver_info = (kernel_ulong_t)(info), } | |
275 | ||
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), } | |
282 | ||
4a17a119 | 283 | static struct pcmcia_device_id atmel_ids[] = { |
b16a228d | 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), | |
4a17a119 DB |
305 | PCMCIA_DEVICE_NULL |
306 | }; | |
b16a228d | 307 | |
4a17a119 DB |
308 | MODULE_DEVICE_TABLE(pcmcia, atmel_ids); |
309 | ||
1da177e4 | 310 | static struct pcmcia_driver atmel_driver = { |
1e212f36 | 311 | .owner = THIS_MODULE, |
2e9b981a | 312 | .name = "atmel_cs", |
15b99ac1 | 313 | .probe = atmel_probe, |
cc3b4866 | 314 | .remove = atmel_detach, |
4a17a119 | 315 | .id_table = atmel_ids, |
98e4c28b DB |
316 | .suspend = atmel_suspend, |
317 | .resume = atmel_resume, | |
1da177e4 LT |
318 | }; |
319 | ||
320 | static int atmel_cs_init(void) | |
321 | { | |
322 | return pcmcia_register_driver(&atmel_driver); | |
323 | } | |
324 | ||
325 | static void atmel_cs_cleanup(void) | |
326 | { | |
327 | pcmcia_unregister_driver(&atmel_driver); | |
1da177e4 LT |
328 | } |
329 | ||
330 | /* | |
331 | This program is free software; you can redistribute it and/or | |
332 | modify it under the terms of the GNU General Public License | |
333 | as published by the Free Software Foundation; either version 2 | |
334 | of the License, or (at your option) any later version. | |
335 | ||
336 | This program is distributed in the hope that it will be useful, | |
337 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
338 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
339 | GNU General Public License for more details. | |
340 | ||
341 | In addition: | |
342 | ||
343 | Redistribution and use in source and binary forms, with or without | |
344 | modification, are permitted provided that the following conditions | |
345 | are met: | |
346 | ||
347 | 1. Redistributions of source code must retain the above copyright | |
348 | notice, this list of conditions and the following disclaimer. | |
349 | 2. Redistributions in binary form must reproduce the above copyright | |
350 | notice, this list of conditions and the following disclaimer in the | |
351 | documentation and/or other materials provided with the distribution. | |
352 | 3. The name of the author may not be used to endorse or promote | |
353 | products derived from this software without specific prior written | |
354 | permission. | |
355 | ||
356 | THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
357 | IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
358 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
359 | ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, | |
360 | INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
361 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
362 | SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
363 | HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
364 | STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
365 | IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
5c877fe5 | 366 | POSSIBILITY OF SUCH DAMAGE. |
1da177e4 LT |
367 | */ |
368 | ||
369 | module_init(atmel_cs_init); | |
370 | module_exit(atmel_cs_cleanup); |