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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/cs.h> |
46 | #include <pcmcia/cistpl.h> | |
47 | #include <pcmcia/cisreg.h> | |
48 | #include <pcmcia/ds.h> | |
49 | #include <pcmcia/ciscode.h> | |
50 | ||
51 | #include <asm/io.h> | |
52 | #include <asm/system.h> | |
53 | #include <linux/wireless.h> | |
54 | ||
55 | #include "atmel.h" | |
56 | ||
1da177e4 LT |
57 | |
58 | /*====================================================================*/ | |
59 | ||
60 | MODULE_AUTHOR("Simon Kelley"); | |
61 | MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards."); | |
62 | MODULE_LICENSE("GPL"); | |
63 | MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards"); | |
64 | ||
65 | /*====================================================================*/ | |
66 | ||
67 | /* | |
68 | The event() function is this driver's Card Services event handler. | |
69 | It will be called by Card Services when an appropriate card status | |
70 | event is received. The config() and release() entry points are | |
71 | used to configure or release a socket, in response to card | |
72 | insertion and ejection events. They are invoked from the atmel_cs | |
5c877fe5 | 73 | event handler. |
1da177e4 LT |
74 | */ |
75 | ||
15b99ac1 | 76 | static int atmel_config(struct pcmcia_device *link); |
fba395ee | 77 | static void atmel_release(struct pcmcia_device *link); |
1da177e4 LT |
78 | |
79 | /* | |
80 | The attach() and detach() entry points are used to create and destroy | |
81 | "instances" of the driver, where each instance represents everything | |
82 | needed to manage one actual PCMCIA card. | |
83 | */ | |
84 | ||
cc3b4866 | 85 | static void atmel_detach(struct pcmcia_device *p_dev); |
1da177e4 | 86 | |
1da177e4 | 87 | typedef struct local_info_t { |
1da177e4 LT |
88 | struct net_device *eth_dev; |
89 | } local_info_t; | |
90 | ||
91 | /*====================================================================== | |
5c877fe5 | 92 | |
1da177e4 LT |
93 | atmel_attach() creates an "instance" of the driver, allocating |
94 | local data structures for one device. The device is registered | |
95 | with Card Services. | |
5c877fe5 | 96 | |
1da177e4 LT |
97 | The dev_link structure is initialized, but we don't actually |
98 | configure the card at this point -- we wait until we receive a | |
99 | card insertion event. | |
5c877fe5 | 100 | |
1da177e4 LT |
101 | ======================================================================*/ |
102 | ||
15b99ac1 | 103 | static int atmel_probe(struct pcmcia_device *p_dev) |
1da177e4 | 104 | { |
1da177e4 | 105 | local_info_t *local; |
f8cfa618 | 106 | |
2caff147 | 107 | dev_dbg(&p_dev->dev, "atmel_attach()\n"); |
1da177e4 | 108 | |
1da177e4 LT |
109 | /* |
110 | General socket configuration defaults can go here. In this | |
111 | client, we assume very little, and rely on the CIS for almost | |
112 | everything. In most clients, many details (i.e., number, sizes, | |
113 | and attributes of IO windows) are fixed by the nature of the | |
114 | device, and can be hard-wired here. | |
115 | */ | |
fd238232 | 116 | p_dev->conf.Attributes = 0; |
f8cfa618 | 117 | |
1da177e4 | 118 | /* Allocate space for private device-specific data */ |
b69a3aa8 | 119 | local = kzalloc(sizeof(local_info_t), GFP_KERNEL); |
1da177e4 LT |
120 | if (!local) { |
121 | printk(KERN_ERR "atmel_cs: no memory for new device\n"); | |
f8cfa618 | 122 | return -ENOMEM; |
1da177e4 | 123 | } |
fd238232 | 124 | p_dev->priv = local; |
f8cfa618 | 125 | |
15b99ac1 | 126 | return atmel_config(p_dev); |
1da177e4 LT |
127 | } /* atmel_attach */ |
128 | ||
129 | /*====================================================================== | |
5c877fe5 | 130 | |
1da177e4 LT |
131 | This deletes a driver "instance". The device is de-registered |
132 | with Card Services. If it has been released, all local data | |
133 | structures are freed. Otherwise, the structures will be freed | |
134 | when the device is released. | |
5c877fe5 | 135 | |
1da177e4 LT |
136 | ======================================================================*/ |
137 | ||
fba395ee | 138 | static void atmel_detach(struct pcmcia_device *link) |
1da177e4 | 139 | { |
2caff147 | 140 | dev_dbg(&link->dev, "atmel_detach\n"); |
1da177e4 | 141 | |
e2d40963 | 142 | atmel_release(link); |
b4635811 | 143 | |
b4558ea9 | 144 | kfree(link->priv); |
1da177e4 LT |
145 | } |
146 | ||
147 | /*====================================================================== | |
5c877fe5 | 148 | |
1da177e4 LT |
149 | atmel_config() is scheduled to run after a CARD_INSERTION event |
150 | is received, to configure the PCMCIA socket, and to make the | |
151 | device available to the system. | |
5c877fe5 | 152 | |
1da177e4 LT |
153 | ======================================================================*/ |
154 | ||
1da177e4 LT |
155 | /* Call-back function to interrogate PCMCIA-specific information |
156 | about the current existance of the card */ | |
157 | static int card_present(void *arg) | |
9940ec36 | 158 | { |
fba395ee | 159 | struct pcmcia_device *link = (struct pcmcia_device *)arg; |
9940ec36 DB |
160 | |
161 | if (pcmcia_dev_present(link)) | |
1da177e4 | 162 | return 1; |
9940ec36 | 163 | |
1da177e4 LT |
164 | return 0; |
165 | } | |
166 | ||
b54bf94b DB |
167 | static int atmel_config_check(struct pcmcia_device *p_dev, |
168 | cistpl_cftable_entry_t *cfg, | |
8e2fc39d | 169 | cistpl_cftable_entry_t *dflt, |
ad913c11 | 170 | unsigned int vcc, |
b54bf94b DB |
171 | void *priv_data) |
172 | { | |
b54bf94b DB |
173 | if (cfg->index == 0) |
174 | return -ENODEV; | |
8e2fc39d | 175 | |
b54bf94b | 176 | /* Does this card need audio output? */ |
fc301101 | 177 | if (cfg->flags & CISTPL_CFTABLE_AUDIO) |
b54bf94b | 178 | p_dev->conf.Attributes |= CONF_ENABLE_SPKR; |
b54bf94b DB |
179 | |
180 | /* Use power settings for Vcc and Vpp if present */ | |
181 | /* Note that the CIS values need to be rescaled */ | |
182 | if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM)) | |
e8405f0f | 183 | p_dev->vpp = cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; |
b54bf94b | 184 | else if (dflt->vpp1.present & (1<<CISTPL_POWER_VNOM)) |
e8405f0f | 185 | p_dev->vpp = dflt->vpp1.param[CISTPL_POWER_VNOM]/10000; |
b54bf94b | 186 | |
eb14120f | 187 | p_dev->conf.Attributes |= CONF_ENABLE_IRQ; |
b54bf94b DB |
188 | |
189 | /* IO window settings */ | |
90abdc3b | 190 | p_dev->resource[0]->end = p_dev->resource[1]->end = 0; |
b54bf94b DB |
191 | if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { |
192 | cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; | |
90abdc3b DB |
193 | p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; |
194 | p_dev->resource[0]->flags |= | |
195 | pcmcia_io_cfg_data_width(io->flags); | |
196 | p_dev->resource[0]->start = io->win[0].base; | |
197 | p_dev->resource[0]->end = io->win[0].len; | |
b54bf94b | 198 | if (io->nwin > 1) { |
90abdc3b DB |
199 | p_dev->resource[1]->flags = p_dev->resource[0]->flags; |
200 | p_dev->resource[1]->start = io->win[1].base; | |
201 | p_dev->resource[1]->end = io->win[1].len; | |
b54bf94b DB |
202 | } |
203 | } | |
204 | ||
205 | /* This reserves IO space but doesn't actually enable it */ | |
90abdc3b | 206 | return pcmcia_request_io(p_dev); |
b54bf94b DB |
207 | } |
208 | ||
15b99ac1 | 209 | static int atmel_config(struct pcmcia_device *link) |
1da177e4 | 210 | { |
1da177e4 | 211 | local_info_t *dev; |
2caff147 | 212 | int ret; |
b16a228d | 213 | struct pcmcia_device_id *did; |
214 | ||
1da177e4 | 215 | dev = link->priv; |
dd2e5a15 | 216 | did = dev_get_drvdata(&link->dev); |
1da177e4 | 217 | |
2caff147 | 218 | dev_dbg(&link->dev, "atmel_config\n"); |
5c877fe5 | 219 | |
1da177e4 LT |
220 | /* |
221 | In this loop, we scan the CIS for configuration table entries, | |
222 | each of which describes a valid card configuration, including | |
223 | voltage, IO window, memory window, and interrupt settings. | |
5c877fe5 | 224 | |
1da177e4 LT |
225 | We make no assumptions about the card to be configured: we use |
226 | just the information available in the CIS. In an ideal world, | |
227 | this would work for any PCMCIA card, but it requires a complete | |
228 | and accurate CIS. In practice, a driver usually "knows" most of | |
229 | these things without consulting the CIS, and most client drivers | |
230 | will only use the CIS to fill in implementation-defined details. | |
231 | */ | |
8e2fc39d | 232 | if (pcmcia_loop_config(link, atmel_config_check, NULL)) |
b54bf94b | 233 | goto failed; |
5c877fe5 | 234 | |
eb14120f DB |
235 | if (!link->irq) { |
236 | dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config."); | |
237 | goto failed; | |
2caff147 | 238 | } |
5c877fe5 | 239 | |
1da177e4 LT |
240 | /* |
241 | This actually configures the PCMCIA socket -- setting up | |
242 | the I/O windows and the interrupt mapping, and putting the | |
243 | card and host interface into "Memory and IO" mode. | |
244 | */ | |
2caff147 DB |
245 | ret = pcmcia_request_configuration(link, &link->conf); |
246 | if (ret) | |
247 | goto failed; | |
5c877fe5 | 248 | |
5c877fe5 | 249 | ((local_info_t*)link->priv)->eth_dev = |
eb14120f | 250 | init_atmel_card(link->irq, |
9a017a91 | 251 | link->resource[0]->start, |
b16a228d | 252 | did ? did->driver_info : ATMEL_FW_TYPE_NONE, |
dd2e5a15 | 253 | &link->dev, |
5c877fe5 | 254 | card_present, |
1da177e4 | 255 | link); |
5c877fe5 | 256 | if (!((local_info_t*)link->priv)->eth_dev) |
2caff147 | 257 | goto failed; |
5c877fe5 DT |
258 | |
259 | ||
15b99ac1 | 260 | return 0; |
e2d40963 | 261 | |
b54bf94b | 262 | failed: |
1da177e4 | 263 | atmel_release(link); |
15b99ac1 | 264 | return -ENODEV; |
1da177e4 LT |
265 | } |
266 | ||
267 | /*====================================================================== | |
5c877fe5 | 268 | |
1da177e4 LT |
269 | After a card is removed, atmel_release() will unregister the |
270 | device, and release the PCMCIA configuration. If the device is | |
271 | still open, this will be postponed until it is closed. | |
5c877fe5 | 272 | |
1da177e4 LT |
273 | ======================================================================*/ |
274 | ||
fba395ee | 275 | static void atmel_release(struct pcmcia_device *link) |
1da177e4 LT |
276 | { |
277 | struct net_device *dev = ((local_info_t*)link->priv)->eth_dev; | |
5f2a71fc | 278 | |
2caff147 | 279 | dev_dbg(&link->dev, "atmel_release\n"); |
5f2a71fc DB |
280 | |
281 | if (dev) | |
b16a228d | 282 | stop_atmel_card(dev); |
5f2a71fc DB |
283 | ((local_info_t*)link->priv)->eth_dev = NULL; |
284 | ||
fba395ee | 285 | pcmcia_disable_device(link); |
1da177e4 LT |
286 | } |
287 | ||
fba395ee | 288 | static int atmel_suspend(struct pcmcia_device *link) |
98e4c28b | 289 | { |
98e4c28b DB |
290 | local_info_t *local = link->priv; |
291 | ||
e2d40963 | 292 | netif_device_detach(local->eth_dev); |
98e4c28b DB |
293 | |
294 | return 0; | |
295 | } | |
296 | ||
fba395ee | 297 | static int atmel_resume(struct pcmcia_device *link) |
98e4c28b | 298 | { |
98e4c28b DB |
299 | local_info_t *local = link->priv; |
300 | ||
e2d40963 DB |
301 | atmel_open(local->eth_dev); |
302 | netif_device_attach(local->eth_dev); | |
98e4c28b DB |
303 | |
304 | return 0; | |
305 | } | |
306 | ||
1da177e4 | 307 | /*====================================================================*/ |
b16a228d | 308 | /* We use the driver_info field to store the correct firmware type for a card. */ |
309 | ||
310 | #define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \ | |
311 | .match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \ | |
312 | PCMCIA_DEV_ID_MATCH_CARD_ID, \ | |
313 | .manf_id = (manf), \ | |
314 | .card_id = (card), \ | |
315 | .driver_info = (kernel_ulong_t)(info), } | |
316 | ||
317 | #define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \ | |
318 | .match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \ | |
319 | PCMCIA_DEV_ID_MATCH_PROD_ID2, \ | |
320 | .prod_id = { (v1), (v2), NULL, NULL }, \ | |
321 | .prod_id_hash = { (vh1), (vh2), 0, 0 }, \ | |
322 | .driver_info = (kernel_ulong_t)(info), } | |
323 | ||
4a17a119 | 324 | static struct pcmcia_device_id atmel_ids[] = { |
b16a228d | 325 | PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM), |
326 | PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM), | |
327 | PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E), | |
328 | PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502), | |
329 | PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E), | |
330 | PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502), | |
331 | PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D), | |
332 | PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E), | |
333 | PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958), | |
334 | PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504), | |
335 | PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958), | |
336 | PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502), | |
337 | PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E), | |
338 | PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502), | |
339 | PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958), | |
340 | PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502), | |
341 | PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D), | |
342 | PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502), | |
343 | PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D), | |
344 | PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D), | |
345 | PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E), | |
4a17a119 DB |
346 | PCMCIA_DEVICE_NULL |
347 | }; | |
b16a228d | 348 | |
4a17a119 DB |
349 | MODULE_DEVICE_TABLE(pcmcia, atmel_ids); |
350 | ||
1da177e4 | 351 | static struct pcmcia_driver atmel_driver = { |
1e212f36 DB |
352 | .owner = THIS_MODULE, |
353 | .drv = { | |
354 | .name = "atmel_cs", | |
1da177e4 | 355 | }, |
15b99ac1 | 356 | .probe = atmel_probe, |
cc3b4866 | 357 | .remove = atmel_detach, |
4a17a119 | 358 | .id_table = atmel_ids, |
98e4c28b DB |
359 | .suspend = atmel_suspend, |
360 | .resume = atmel_resume, | |
1da177e4 LT |
361 | }; |
362 | ||
363 | static int atmel_cs_init(void) | |
364 | { | |
365 | return pcmcia_register_driver(&atmel_driver); | |
366 | } | |
367 | ||
368 | static void atmel_cs_cleanup(void) | |
369 | { | |
370 | pcmcia_unregister_driver(&atmel_driver); | |
1da177e4 LT |
371 | } |
372 | ||
373 | /* | |
374 | This program is free software; you can redistribute it and/or | |
375 | modify it under the terms of the GNU General Public License | |
376 | as published by the Free Software Foundation; either version 2 | |
377 | of the License, or (at your option) any later version. | |
378 | ||
379 | This program is distributed in the hope that it will be useful, | |
380 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
381 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
382 | GNU General Public License for more details. | |
383 | ||
384 | In addition: | |
385 | ||
386 | Redistribution and use in source and binary forms, with or without | |
387 | modification, are permitted provided that the following conditions | |
388 | are met: | |
389 | ||
390 | 1. Redistributions of source code must retain the above copyright | |
391 | notice, this list of conditions and the following disclaimer. | |
392 | 2. Redistributions in binary form must reproduce the above copyright | |
393 | notice, this list of conditions and the following disclaimer in the | |
394 | documentation and/or other materials provided with the distribution. | |
395 | 3. The name of the author may not be used to endorse or promote | |
396 | products derived from this software without specific prior written | |
397 | permission. | |
398 | ||
399 | THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
400 | IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
401 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
402 | ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, | |
403 | INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
404 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
405 | SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
406 | HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
407 | STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
408 | IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
5c877fe5 | 409 | POSSIBILITY OF SUCH DAMAGE. |
1da177e4 LT |
410 | */ |
411 | ||
412 | module_init(atmel_cs_init); | |
413 | module_exit(atmel_cs_cleanup); |