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1da177e4 LT |
1 | /*====================================================================== |
2 | ||
3 | Aironet driver for 4500 and 4800 series cards | |
4 | ||
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 | |
7 | the end of this file. | |
8 | ||
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 | |
14 | Aironet. | |
15 | ||
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 | |
05c9a4cf JD |
19 | are Copyright (C) 1999 David A. Hinds. All Rights Reserved. |
20 | ||
1da177e4 LT |
21 | ======================================================================*/ |
22 | ||
1da177e4 LT |
23 | #ifdef __IN_PCMCIA_PACKAGE__ |
24 | #include <pcmcia/k_compat.h> | |
25 | #endif | |
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> | |
34 | ||
1da177e4 LT |
35 | #include <pcmcia/cistpl.h> |
36 | #include <pcmcia/cisreg.h> | |
37 | #include <pcmcia/ds.h> | |
38 | ||
05c9a4cf | 39 | #include <linux/io.h> |
1da177e4 LT |
40 | #include <asm/system.h> |
41 | ||
d3808760 AB |
42 | #include "airo.h" |
43 | ||
1da177e4 LT |
44 | |
45 | /*====================================================================*/ | |
46 | ||
47 | MODULE_AUTHOR("Benjamin Reed"); | |
05c9a4cf JD |
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."); | |
1da177e4 LT |
51 | MODULE_LICENSE("Dual BSD/GPL"); |
52 | MODULE_SUPPORTED_DEVICE("Aironet 4500, 4800 and Cisco 340 PCMCIA cards"); | |
53 | ||
54 | /*====================================================================*/ | |
55 | ||
56 | /* | |
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 | |
05c9a4cf | 62 | event handler. |
1da177e4 LT |
63 | */ |
64 | ||
15b99ac1 | 65 | static int airo_config(struct pcmcia_device *link); |
fba395ee | 66 | static void airo_release(struct pcmcia_device *link); |
1da177e4 LT |
67 | |
68 | /* | |
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. | |
72 | */ | |
73 | ||
cc3b4866 | 74 | static void airo_detach(struct pcmcia_device *p_dev); |
1da177e4 | 75 | |
1da177e4 | 76 | typedef struct local_info_t { |
1da177e4 LT |
77 | struct net_device *eth_dev; |
78 | } local_info_t; | |
79 | ||
80 | /*====================================================================== | |
05c9a4cf | 81 | |
1da177e4 LT |
82 | airo_attach() creates an "instance" of the driver, allocating |
83 | local data structures for one device. The device is registered | |
84 | with Card Services. | |
05c9a4cf | 85 | |
1da177e4 LT |
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 | |
88 | card insertion event. | |
05c9a4cf | 89 | |
1da177e4 LT |
90 | ======================================================================*/ |
91 | ||
15b99ac1 | 92 | static int airo_probe(struct pcmcia_device *p_dev) |
1da177e4 | 93 | { |
1da177e4 | 94 | local_info_t *local; |
f8cfa618 | 95 | |
2caff147 | 96 | dev_dbg(&p_dev->dev, "airo_attach()\n"); |
1da177e4 | 97 | |
1da177e4 | 98 | /* Allocate space for private device-specific data */ |
b69a3aa8 | 99 | local = kzalloc(sizeof(local_info_t), GFP_KERNEL); |
1da177e4 LT |
100 | if (!local) { |
101 | printk(KERN_ERR "airo_cs: no memory for new device\n"); | |
f8cfa618 | 102 | return -ENOMEM; |
1da177e4 | 103 | } |
fd238232 | 104 | p_dev->priv = local; |
f8cfa618 | 105 | |
15b99ac1 | 106 | return airo_config(p_dev); |
1da177e4 LT |
107 | } /* airo_attach */ |
108 | ||
109 | /*====================================================================== | |
05c9a4cf | 110 | |
1da177e4 LT |
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. | |
05c9a4cf | 115 | |
1da177e4 LT |
116 | ======================================================================*/ |
117 | ||
fba395ee | 118 | static void airo_detach(struct pcmcia_device *link) |
1da177e4 | 119 | { |
2caff147 | 120 | dev_dbg(&link->dev, "airo_detach\n"); |
b4635811 | 121 | |
e2d40963 | 122 | airo_release(link); |
b4635811 | 123 | |
05c9a4cf JD |
124 | if (((local_info_t *)link->priv)->eth_dev) { |
125 | stop_airo_card(((local_info_t *)link->priv)->eth_dev, 0); | |
1da177e4 | 126 | } |
05c9a4cf | 127 | ((local_info_t *)link->priv)->eth_dev = NULL; |
cc3b4866 | 128 | |
b4558ea9 | 129 | kfree(link->priv); |
1da177e4 LT |
130 | } /* airo_detach */ |
131 | ||
132 | /*====================================================================== | |
05c9a4cf | 133 | |
1da177e4 LT |
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. | |
05c9a4cf | 137 | |
1da177e4 LT |
138 | ======================================================================*/ |
139 | ||
b54bf94b DB |
140 | static int airo_cs_config_check(struct pcmcia_device *p_dev, |
141 | cistpl_cftable_entry_t *cfg, | |
8e2fc39d | 142 | cistpl_cftable_entry_t *dflt, |
ad913c11 | 143 | unsigned int vcc, |
b54bf94b DB |
144 | void *priv_data) |
145 | { | |
b54bf94b DB |
146 | if (cfg->index == 0) |
147 | return -ENODEV; | |
148 | ||
b54bf94b | 149 | /* Does this card need audio output? */ |
fc301101 | 150 | if (cfg->flags & CISTPL_CFTABLE_AUDIO) |
1ac71e5a | 151 | p_dev->config_flags |= CONF_ENABLE_SPKR; |
b54bf94b DB |
152 | |
153 | /* Use power settings for Vcc and Vpp if present */ | |
154 | /* Note that the CIS values need to be rescaled */ | |
155 | if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM)) | |
e8405f0f | 156 | p_dev->vpp = cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; |
8e2fc39d | 157 | else if (dflt->vpp1.present & (1<<CISTPL_POWER_VNOM)) |
e8405f0f | 158 | p_dev->vpp = dflt->vpp1.param[CISTPL_POWER_VNOM]/10000; |
b54bf94b | 159 | |
1ac71e5a | 160 | p_dev->config_flags |= CONF_ENABLE_IRQ; |
b54bf94b DB |
161 | |
162 | /* IO window settings */ | |
90abdc3b | 163 | p_dev->resource[0]->end = p_dev->resource[1]->end = 0; |
8e2fc39d DB |
164 | if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { |
165 | cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; | |
90abdc3b DB |
166 | p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; |
167 | p_dev->resource[0]->flags |= | |
168 | pcmcia_io_cfg_data_width(io->flags); | |
169 | p_dev->resource[0]->start = io->win[0].base; | |
170 | p_dev->resource[0]->end = io->win[0].len; | |
b54bf94b | 171 | if (io->nwin > 1) { |
90abdc3b DB |
172 | p_dev->resource[1]->flags = p_dev->resource[0]->flags; |
173 | p_dev->resource[1]->start = io->win[1].base; | |
174 | p_dev->resource[1]->end = io->win[1].len; | |
b54bf94b DB |
175 | } |
176 | } | |
177 | ||
178 | /* This reserves IO space but doesn't actually enable it */ | |
90abdc3b | 179 | if (pcmcia_request_io(p_dev) != 0) |
b54bf94b DB |
180 | return -ENODEV; |
181 | ||
b54bf94b DB |
182 | /* If we got this far, we're cool! */ |
183 | return 0; | |
184 | } | |
185 | ||
186 | ||
15b99ac1 | 187 | static int airo_config(struct pcmcia_device *link) |
1da177e4 | 188 | { |
1da177e4 | 189 | local_info_t *dev; |
2caff147 | 190 | int ret; |
fba395ee | 191 | |
1da177e4 LT |
192 | dev = link->priv; |
193 | ||
2caff147 | 194 | dev_dbg(&link->dev, "airo_config\n"); |
e2d40963 | 195 | |
1da177e4 | 196 | /* |
b54bf94b DB |
197 | * In this loop, we scan the CIS for configuration table |
198 | * entries, each of which describes a valid card | |
199 | * configuration, including voltage, IO window, memory window, | |
200 | * and interrupt settings. | |
201 | * | |
202 | * We make no assumptions about the card to be configured: we | |
203 | * use just the information available in the CIS. In an ideal | |
204 | * world, this would work for any PCMCIA card, but it requires | |
205 | * a complete and accurate CIS. In practice, a driver usually | |
206 | * "knows" most of these things without consulting the CIS, | |
207 | * and most client drivers will only use the CIS to fill in | |
208 | * implementation-defined details. | |
209 | */ | |
0f52e86d | 210 | ret = pcmcia_loop_config(link, airo_cs_config_check, NULL); |
2caff147 | 211 | if (ret) |
b54bf94b DB |
212 | goto failed; |
213 | ||
eb14120f DB |
214 | if (!link->irq) |
215 | goto failed; | |
05c9a4cf | 216 | |
1da177e4 LT |
217 | /* |
218 | This actually configures the PCMCIA socket -- setting up | |
219 | the I/O windows and the interrupt mapping, and putting the | |
220 | card and host interface into "Memory and IO" mode. | |
221 | */ | |
1ac71e5a | 222 | ret = pcmcia_enable_device(link); |
2caff147 DB |
223 | if (ret) |
224 | goto failed; | |
05c9a4cf | 225 | ((local_info_t *)link->priv)->eth_dev = |
eb14120f | 226 | init_airo_card(link->irq, |
9a017a91 | 227 | link->resource[0]->start, 1, &link->dev); |
05c9a4cf | 228 | if (!((local_info_t *)link->priv)->eth_dev) |
2caff147 | 229 | goto failed; |
05c9a4cf | 230 | |
1da177e4 | 231 | /* Finally, report what we've done */ |
ded6a1a3 | 232 | dev_info(&link->dev, "index 0x%02x: ", |
7feabb64 | 233 | link->config_index); |
e8405f0f DB |
234 | if (link->vpp) |
235 | printk(", Vpp %d.%d", link->vpp/10, link->vpp%10); | |
eb14120f | 236 | printk(", irq %d", link->irq); |
9a017a91 DB |
237 | if (link->resource[0]) |
238 | printk(" & %pR", link->resource[0]); | |
239 | if (link->resource[1]) | |
240 | printk(" & %pR", link->resource[1]); | |
1da177e4 | 241 | printk("\n"); |
15b99ac1 DB |
242 | return 0; |
243 | ||
b54bf94b | 244 | failed: |
1da177e4 | 245 | airo_release(link); |
15b99ac1 | 246 | return -ENODEV; |
1da177e4 LT |
247 | } /* airo_config */ |
248 | ||
249 | /*====================================================================== | |
05c9a4cf | 250 | |
1da177e4 LT |
251 | After a card is removed, airo_release() will unregister the |
252 | device, and release the PCMCIA configuration. If the device is | |
253 | still open, this will be postponed until it is closed. | |
05c9a4cf | 254 | |
1da177e4 LT |
255 | ======================================================================*/ |
256 | ||
fba395ee | 257 | static void airo_release(struct pcmcia_device *link) |
1da177e4 | 258 | { |
2caff147 | 259 | dev_dbg(&link->dev, "airo_release\n"); |
fba395ee | 260 | pcmcia_disable_device(link); |
1da177e4 LT |
261 | } |
262 | ||
fba395ee | 263 | static int airo_suspend(struct pcmcia_device *link) |
98e4c28b | 264 | { |
98e4c28b DB |
265 | local_info_t *local = link->priv; |
266 | ||
e2d40963 | 267 | netif_device_detach(local->eth_dev); |
98e4c28b DB |
268 | |
269 | return 0; | |
270 | } | |
271 | ||
fba395ee | 272 | static int airo_resume(struct pcmcia_device *link) |
98e4c28b | 273 | { |
98e4c28b DB |
274 | local_info_t *local = link->priv; |
275 | ||
e2d40963 | 276 | if (link->open) { |
98e4c28b DB |
277 | reset_airo_card(local->eth_dev); |
278 | netif_device_attach(local->eth_dev); | |
279 | } | |
280 | ||
281 | return 0; | |
282 | } | |
283 | ||
7018d06d DB |
284 | static struct pcmcia_device_id airo_ids[] = { |
285 | PCMCIA_DEVICE_MANF_CARD(0x015f, 0x000a), | |
286 | PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0005), | |
287 | PCMCIA_DEVICE_MANF_CARD(0x015f, 0x0007), | |
288 | PCMCIA_DEVICE_MANF_CARD(0x0105, 0x0007), | |
289 | PCMCIA_DEVICE_NULL, | |
290 | }; | |
291 | MODULE_DEVICE_TABLE(pcmcia, airo_ids); | |
292 | ||
1da177e4 LT |
293 | static struct pcmcia_driver airo_driver = { |
294 | .owner = THIS_MODULE, | |
295 | .drv = { | |
296 | .name = "airo_cs", | |
297 | }, | |
15b99ac1 | 298 | .probe = airo_probe, |
cc3b4866 | 299 | .remove = airo_detach, |
7018d06d | 300 | .id_table = airo_ids, |
98e4c28b DB |
301 | .suspend = airo_suspend, |
302 | .resume = airo_resume, | |
1da177e4 LT |
303 | }; |
304 | ||
305 | static int airo_cs_init(void) | |
306 | { | |
307 | return pcmcia_register_driver(&airo_driver); | |
308 | } | |
309 | ||
310 | static void airo_cs_cleanup(void) | |
311 | { | |
312 | pcmcia_unregister_driver(&airo_driver); | |
1da177e4 LT |
313 | } |
314 | ||
315 | /* | |
316 | This program is free software; you can redistribute it and/or | |
317 | modify it under the terms of the GNU General Public License | |
318 | as published by the Free Software Foundation; either version 2 | |
319 | of the License, or (at your option) any later version. | |
320 | ||
321 | This program is distributed in the hope that it will be useful, | |
322 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
323 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
324 | GNU General Public License for more details. | |
325 | ||
326 | In addition: | |
327 | ||
328 | Redistribution and use in source and binary forms, with or without | |
329 | modification, are permitted provided that the following conditions | |
330 | are met: | |
331 | ||
332 | 1. Redistributions of source code must retain the above copyright | |
333 | notice, this list of conditions and the following disclaimer. | |
334 | 2. Redistributions in binary form must reproduce the above copyright | |
335 | notice, this list of conditions and the following disclaimer in the | |
336 | documentation and/or other materials provided with the distribution. | |
337 | 3. The name of the author may not be used to endorse or promote | |
338 | products derived from this software without specific prior written | |
339 | permission. | |
340 | ||
341 | THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
342 | IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
343 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
344 | ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, | |
345 | INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
346 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
347 | SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
348 | HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
349 | STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
350 | IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
05c9a4cf | 351 | POSSIBILITY OF SUCH DAMAGE. |
1da177e4 LT |
352 | */ |
353 | ||
354 | module_init(airo_cs_init); | |
355 | module_exit(airo_cs_cleanup); |