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0ac0d6ce CL |
1 | /* |
2 | * mac80211 glue code for mac80211 Prism54 drivers | |
3 | * | |
4 | * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net> | |
5 | * Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de> | |
6 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> | |
7 | * | |
8 | * Based on: | |
9 | * - the islsm (softmac prism54) driver, which is: | |
10 | * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al. | |
11 | * - stlc45xx driver | |
12 | * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies). | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License version 2 as | |
16 | * published by the Free Software Foundation. | |
17 | */ | |
18 | ||
19 | #include <linux/init.h> | |
20 | #include <linux/firmware.h> | |
21 | #include <linux/etherdevice.h> | |
22 | ||
23 | #include <net/mac80211.h> | |
24 | ||
25 | #include "p54.h" | |
26 | #include "lmac.h" | |
27 | ||
28 | static int modparam_nohwcrypt; | |
29 | module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO); | |
30 | MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); | |
31 | MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>"); | |
32 | MODULE_DESCRIPTION("Softmac Prism54 common code"); | |
33 | MODULE_LICENSE("GPL"); | |
34 | MODULE_ALIAS("prism54common"); | |
35 | ||
36 | static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif, | |
37 | enum sta_notify_cmd notify_cmd, | |
38 | struct ieee80211_sta *sta) | |
39 | { | |
40 | struct p54_common *priv = dev->priv; | |
41 | switch (notify_cmd) { | |
42 | case STA_NOTIFY_ADD: | |
43 | case STA_NOTIFY_REMOVE: | |
44 | /* | |
45 | * Notify the firmware that we don't want or we don't | |
46 | * need to buffer frames for this station anymore. | |
47 | */ | |
48 | ||
49 | p54_sta_unlock(priv, sta->addr); | |
50 | break; | |
51 | case STA_NOTIFY_AWAKE: | |
52 | /* update the firmware's filter table */ | |
53 | p54_sta_unlock(priv, sta->addr); | |
54 | break; | |
55 | default: | |
56 | break; | |
57 | } | |
58 | } | |
59 | ||
60 | static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta, | |
61 | bool set) | |
62 | { | |
63 | struct p54_common *priv = dev->priv; | |
64 | ||
65 | return p54_update_beacon_tim(priv, sta->aid, set); | |
66 | } | |
67 | ||
e0f114e8 | 68 | u8 *p54_find_ie(struct sk_buff *skb, u8 ie) |
0ac0d6ce | 69 | { |
0ac0d6ce CL |
70 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
71 | u8 *pos, *end; | |
72 | ||
73 | if (skb->len <= sizeof(mgmt)) | |
e0f114e8 | 74 | return NULL; |
0ac0d6ce CL |
75 | |
76 | pos = (u8 *)mgmt->u.beacon.variable; | |
77 | end = skb->data + skb->len; | |
78 | while (pos < end) { | |
79 | if (pos + 2 + pos[1] > end) | |
e0f114e8 | 80 | return NULL; |
0ac0d6ce | 81 | |
e0f114e8 CL |
82 | if (pos[0] == ie) |
83 | return pos; | |
0ac0d6ce | 84 | |
e0f114e8 CL |
85 | pos += 2 + pos[1]; |
86 | } | |
87 | return NULL; | |
88 | } | |
0ac0d6ce | 89 | |
e0f114e8 CL |
90 | static int p54_beacon_format_ie_tim(struct sk_buff *skb) |
91 | { | |
92 | /* | |
93 | * the good excuse for this mess is ... the firmware. | |
94 | * The dummy TIM MUST be at the end of the beacon frame, | |
95 | * because it'll be overwritten! | |
96 | */ | |
97 | u8 *tim; | |
98 | u8 dtim_len; | |
99 | u8 dtim_period; | |
100 | u8 *next; | |
0ac0d6ce | 101 | |
e0f114e8 CL |
102 | tim = p54_find_ie(skb, WLAN_EID_TIM); |
103 | if (!tim) | |
104 | return 0; | |
0ac0d6ce | 105 | |
e0f114e8 CL |
106 | dtim_len = tim[1]; |
107 | dtim_period = tim[3]; | |
108 | next = tim + 2 + dtim_len; | |
109 | ||
110 | if (dtim_len < 3) | |
111 | return -EINVAL; | |
112 | ||
113 | memmove(tim, next, skb_tail_pointer(skb) - next); | |
114 | tim = skb_tail_pointer(skb) - (dtim_len + 2); | |
115 | ||
116 | /* add the dummy at the end */ | |
117 | tim[0] = WLAN_EID_TIM; | |
118 | tim[1] = 3; | |
119 | tim[2] = 0; | |
120 | tim[3] = dtim_period; | |
121 | tim[4] = 0; | |
122 | ||
123 | if (dtim_len > 3) | |
124 | skb_trim(skb, skb->len - (dtim_len - 3)); | |
0ac0d6ce | 125 | |
0ac0d6ce CL |
126 | return 0; |
127 | } | |
128 | ||
129 | static int p54_beacon_update(struct p54_common *priv, | |
130 | struct ieee80211_vif *vif) | |
131 | { | |
132 | struct sk_buff *beacon; | |
0ac0d6ce CL |
133 | int ret; |
134 | ||
135 | beacon = ieee80211_beacon_get(priv->hw, vif); | |
136 | if (!beacon) | |
137 | return -ENOMEM; | |
138 | ret = p54_beacon_format_ie_tim(beacon); | |
139 | if (ret) | |
140 | return ret; | |
141 | ||
46df10ae CL |
142 | /* |
143 | * During operation, the firmware takes care of beaconing. | |
144 | * The driver only needs to upload a new beacon template, once | |
145 | * the template was changed by the stack or userspace. | |
146 | * | |
147 | * LMAC API 3.2.2 also specifies that the driver does not need | |
148 | * to cancel the old beacon template by hand, instead the firmware | |
149 | * will release the previous one through the feedback mechanism. | |
150 | */ | |
151 | WARN_ON(p54_tx_80211(priv->hw, beacon)); | |
0ac0d6ce CL |
152 | priv->tsf_high32 = 0; |
153 | priv->tsf_low32 = 0; | |
154 | ||
155 | return 0; | |
156 | } | |
157 | ||
158 | static int p54_start(struct ieee80211_hw *dev) | |
159 | { | |
160 | struct p54_common *priv = dev->priv; | |
161 | int err; | |
162 | ||
163 | mutex_lock(&priv->conf_mutex); | |
164 | err = priv->open(dev); | |
165 | if (err) | |
166 | goto out; | |
167 | P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47); | |
168 | P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94); | |
169 | P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0); | |
170 | P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0); | |
171 | err = p54_set_edcf(priv); | |
172 | if (err) | |
173 | goto out; | |
174 | ||
175 | memset(priv->bssid, ~0, ETH_ALEN); | |
176 | priv->mode = NL80211_IFTYPE_MONITOR; | |
177 | err = p54_setup_mac(priv); | |
178 | if (err) { | |
179 | priv->mode = NL80211_IFTYPE_UNSPECIFIED; | |
180 | goto out; | |
181 | } | |
182 | ||
183 | queue_delayed_work(dev->workqueue, &priv->work, 0); | |
184 | ||
185 | priv->softled_state = 0; | |
186 | err = p54_set_leds(priv); | |
187 | ||
188 | out: | |
189 | mutex_unlock(&priv->conf_mutex); | |
190 | return err; | |
191 | } | |
192 | ||
193 | static void p54_stop(struct ieee80211_hw *dev) | |
194 | { | |
195 | struct p54_common *priv = dev->priv; | |
196 | int i; | |
197 | ||
198 | mutex_lock(&priv->conf_mutex); | |
199 | priv->mode = NL80211_IFTYPE_UNSPECIFIED; | |
200 | priv->softled_state = 0; | |
201 | p54_set_leds(priv); | |
202 | ||
203 | cancel_delayed_work_sync(&priv->work); | |
204 | ||
205 | priv->stop(dev); | |
206 | skb_queue_purge(&priv->tx_pending); | |
207 | skb_queue_purge(&priv->tx_queue); | |
208 | for (i = 0; i < P54_QUEUE_NUM; i++) { | |
209 | priv->tx_stats[i].count = 0; | |
210 | priv->tx_stats[i].len = 0; | |
211 | } | |
212 | ||
213 | priv->beacon_req_id = cpu_to_le32(0); | |
214 | priv->tsf_high32 = priv->tsf_low32 = 0; | |
215 | mutex_unlock(&priv->conf_mutex); | |
216 | } | |
217 | ||
218 | static int p54_add_interface(struct ieee80211_hw *dev, | |
219 | struct ieee80211_if_init_conf *conf) | |
220 | { | |
221 | struct p54_common *priv = dev->priv; | |
222 | ||
223 | mutex_lock(&priv->conf_mutex); | |
224 | if (priv->mode != NL80211_IFTYPE_MONITOR) { | |
225 | mutex_unlock(&priv->conf_mutex); | |
226 | return -EOPNOTSUPP; | |
227 | } | |
228 | ||
229 | priv->vif = conf->vif; | |
230 | ||
231 | switch (conf->type) { | |
232 | case NL80211_IFTYPE_STATION: | |
233 | case NL80211_IFTYPE_ADHOC: | |
234 | case NL80211_IFTYPE_AP: | |
235 | case NL80211_IFTYPE_MESH_POINT: | |
236 | priv->mode = conf->type; | |
237 | break; | |
238 | default: | |
239 | mutex_unlock(&priv->conf_mutex); | |
240 | return -EOPNOTSUPP; | |
241 | } | |
242 | ||
243 | memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN); | |
244 | p54_setup_mac(priv); | |
245 | mutex_unlock(&priv->conf_mutex); | |
246 | return 0; | |
247 | } | |
248 | ||
249 | static void p54_remove_interface(struct ieee80211_hw *dev, | |
250 | struct ieee80211_if_init_conf *conf) | |
251 | { | |
252 | struct p54_common *priv = dev->priv; | |
253 | ||
254 | mutex_lock(&priv->conf_mutex); | |
255 | priv->vif = NULL; | |
46df10ae CL |
256 | |
257 | /* | |
258 | * LMAC API 3.2.2 states that any active beacon template must be | |
259 | * canceled by the driver before attempting a mode transition. | |
260 | */ | |
261 | if (le32_to_cpu(priv->beacon_req_id) != 0) { | |
0ac0d6ce | 262 | p54_tx_cancel(priv, priv->beacon_req_id); |
46df10ae | 263 | wait_for_completion_interruptible_timeout(&priv->beacon_comp, HZ); |
0ac0d6ce CL |
264 | } |
265 | priv->mode = NL80211_IFTYPE_MONITOR; | |
266 | memset(priv->mac_addr, 0, ETH_ALEN); | |
267 | memset(priv->bssid, 0, ETH_ALEN); | |
268 | p54_setup_mac(priv); | |
269 | mutex_unlock(&priv->conf_mutex); | |
270 | } | |
271 | ||
272 | static int p54_config(struct ieee80211_hw *dev, u32 changed) | |
273 | { | |
274 | int ret = 0; | |
275 | struct p54_common *priv = dev->priv; | |
276 | struct ieee80211_conf *conf = &dev->conf; | |
277 | ||
278 | mutex_lock(&priv->conf_mutex); | |
279 | if (changed & IEEE80211_CONF_CHANGE_POWER) | |
280 | priv->output_power = conf->power_level << 2; | |
281 | if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { | |
282 | ret = p54_scan(priv, P54_SCAN_EXIT, 0); | |
283 | if (ret) | |
284 | goto out; | |
285 | } | |
286 | if (changed & IEEE80211_CONF_CHANGE_PS) { | |
287 | ret = p54_set_ps(priv); | |
288 | if (ret) | |
289 | goto out; | |
290 | } | |
291 | ||
292 | out: | |
293 | mutex_unlock(&priv->conf_mutex); | |
294 | return ret; | |
295 | } | |
296 | ||
297 | static void p54_configure_filter(struct ieee80211_hw *dev, | |
298 | unsigned int changed_flags, | |
299 | unsigned int *total_flags, | |
300 | int mc_count, struct dev_mc_list *mclist) | |
301 | { | |
302 | struct p54_common *priv = dev->priv; | |
303 | ||
304 | *total_flags &= FIF_PROMISC_IN_BSS | | |
305 | FIF_OTHER_BSS; | |
306 | ||
307 | priv->filter_flags = *total_flags; | |
308 | ||
309 | if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) | |
310 | p54_setup_mac(priv); | |
311 | } | |
312 | ||
313 | static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue, | |
314 | const struct ieee80211_tx_queue_params *params) | |
315 | { | |
316 | struct p54_common *priv = dev->priv; | |
317 | int ret; | |
318 | ||
319 | mutex_lock(&priv->conf_mutex); | |
320 | if ((params) && !(queue > 4)) { | |
321 | P54_SET_QUEUE(priv->qos_params[queue], params->aifs, | |
322 | params->cw_min, params->cw_max, params->txop); | |
323 | ret = p54_set_edcf(priv); | |
324 | } else | |
325 | ret = -EINVAL; | |
326 | mutex_unlock(&priv->conf_mutex); | |
327 | return ret; | |
328 | } | |
329 | ||
330 | static void p54_work(struct work_struct *work) | |
331 | { | |
332 | struct p54_common *priv = container_of(work, struct p54_common, | |
333 | work.work); | |
334 | ||
335 | if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED)) | |
336 | return ; | |
337 | ||
338 | /* | |
339 | * TODO: walk through tx_queue and do the following tasks | |
340 | * 1. initiate bursts. | |
341 | * 2. cancel stuck frames / reset the device if necessary. | |
342 | */ | |
343 | ||
344 | p54_fetch_statistics(priv); | |
345 | } | |
346 | ||
347 | static int p54_get_stats(struct ieee80211_hw *dev, | |
348 | struct ieee80211_low_level_stats *stats) | |
349 | { | |
350 | struct p54_common *priv = dev->priv; | |
351 | ||
352 | memcpy(stats, &priv->stats, sizeof(*stats)); | |
353 | return 0; | |
354 | } | |
355 | ||
356 | static int p54_get_tx_stats(struct ieee80211_hw *dev, | |
357 | struct ieee80211_tx_queue_stats *stats) | |
358 | { | |
359 | struct p54_common *priv = dev->priv; | |
360 | ||
361 | memcpy(stats, &priv->tx_stats[P54_QUEUE_DATA], | |
362 | sizeof(stats[0]) * dev->queues); | |
363 | return 0; | |
364 | } | |
365 | ||
366 | static void p54_bss_info_changed(struct ieee80211_hw *dev, | |
367 | struct ieee80211_vif *vif, | |
368 | struct ieee80211_bss_conf *info, | |
369 | u32 changed) | |
370 | { | |
371 | struct p54_common *priv = dev->priv; | |
372 | ||
373 | mutex_lock(&priv->conf_mutex); | |
374 | if (changed & BSS_CHANGED_BSSID) { | |
375 | memcpy(priv->bssid, info->bssid, ETH_ALEN); | |
376 | p54_setup_mac(priv); | |
377 | } | |
378 | ||
379 | if (changed & BSS_CHANGED_BEACON) { | |
380 | p54_scan(priv, P54_SCAN_EXIT, 0); | |
381 | p54_setup_mac(priv); | |
382 | p54_beacon_update(priv, vif); | |
383 | p54_set_edcf(priv); | |
384 | } | |
385 | ||
386 | if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_BEACON)) { | |
387 | priv->use_short_slot = info->use_short_slot; | |
388 | p54_set_edcf(priv); | |
389 | } | |
390 | if (changed & BSS_CHANGED_BASIC_RATES) { | |
391 | if (dev->conf.channel->band == IEEE80211_BAND_5GHZ) | |
392 | priv->basic_rate_mask = (info->basic_rates << 4); | |
393 | else | |
394 | priv->basic_rate_mask = info->basic_rates; | |
395 | p54_setup_mac(priv); | |
396 | if (priv->fw_var >= 0x500) | |
397 | p54_scan(priv, P54_SCAN_EXIT, 0); | |
398 | } | |
399 | if (changed & BSS_CHANGED_ASSOC) { | |
400 | if (info->assoc) { | |
401 | priv->aid = info->aid; | |
402 | priv->wakeup_timer = info->beacon_int * | |
403 | info->dtim_period * 5; | |
404 | p54_setup_mac(priv); | |
e0f114e8 CL |
405 | } else { |
406 | priv->wakeup_timer = 500; | |
407 | priv->aid = 0; | |
0ac0d6ce CL |
408 | } |
409 | } | |
410 | ||
411 | mutex_unlock(&priv->conf_mutex); | |
412 | } | |
413 | ||
414 | static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd, | |
415 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, | |
416 | struct ieee80211_key_conf *key) | |
417 | { | |
418 | struct p54_common *priv = dev->priv; | |
419 | int slot, ret = 0; | |
420 | u8 algo = 0; | |
421 | u8 *addr = NULL; | |
422 | ||
423 | if (modparam_nohwcrypt) | |
424 | return -EOPNOTSUPP; | |
425 | ||
426 | mutex_lock(&priv->conf_mutex); | |
427 | if (cmd == SET_KEY) { | |
428 | switch (key->alg) { | |
429 | case ALG_TKIP: | |
430 | if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL | | |
431 | BR_DESC_PRIV_CAP_TKIP))) { | |
432 | ret = -EOPNOTSUPP; | |
433 | goto out_unlock; | |
434 | } | |
435 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
436 | algo = P54_CRYPTO_TKIPMICHAEL; | |
437 | break; | |
438 | case ALG_WEP: | |
439 | if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP)) { | |
440 | ret = -EOPNOTSUPP; | |
441 | goto out_unlock; | |
442 | } | |
443 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
444 | algo = P54_CRYPTO_WEP; | |
445 | break; | |
446 | case ALG_CCMP: | |
447 | if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)) { | |
448 | ret = -EOPNOTSUPP; | |
449 | goto out_unlock; | |
450 | } | |
451 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
452 | algo = P54_CRYPTO_AESCCMP; | |
453 | break; | |
454 | default: | |
455 | ret = -EOPNOTSUPP; | |
456 | goto out_unlock; | |
457 | } | |
458 | slot = bitmap_find_free_region(priv->used_rxkeys, | |
459 | priv->rx_keycache_size, 0); | |
460 | ||
461 | if (slot < 0) { | |
462 | /* | |
463 | * The device supports the choosen algorithm, but the | |
464 | * firmware does not provide enough key slots to store | |
465 | * all of them. | |
466 | * But encryption offload for outgoing frames is always | |
467 | * possible, so we just pretend that the upload was | |
468 | * successful and do the decryption in software. | |
469 | */ | |
470 | ||
471 | /* mark the key as invalid. */ | |
472 | key->hw_key_idx = 0xff; | |
473 | goto out_unlock; | |
474 | } | |
475 | } else { | |
476 | slot = key->hw_key_idx; | |
477 | ||
478 | if (slot == 0xff) { | |
479 | /* This key was not uploaded into the rx key cache. */ | |
480 | ||
481 | goto out_unlock; | |
482 | } | |
483 | ||
484 | bitmap_release_region(priv->used_rxkeys, slot, 0); | |
485 | algo = 0; | |
486 | } | |
487 | ||
488 | if (sta) | |
489 | addr = sta->addr; | |
490 | ||
491 | ret = p54_upload_key(priv, algo, slot, key->keyidx, | |
492 | key->keylen, addr, key->key); | |
493 | if (ret) { | |
494 | bitmap_release_region(priv->used_rxkeys, slot, 0); | |
495 | ret = -EOPNOTSUPP; | |
496 | goto out_unlock; | |
497 | } | |
498 | ||
499 | key->hw_key_idx = slot; | |
500 | ||
501 | out_unlock: | |
502 | mutex_unlock(&priv->conf_mutex); | |
503 | return ret; | |
504 | } | |
505 | ||
506 | static const struct ieee80211_ops p54_ops = { | |
507 | .tx = p54_tx_80211, | |
508 | .start = p54_start, | |
509 | .stop = p54_stop, | |
510 | .add_interface = p54_add_interface, | |
511 | .remove_interface = p54_remove_interface, | |
512 | .set_tim = p54_set_tim, | |
513 | .sta_notify = p54_sta_notify, | |
514 | .set_key = p54_set_key, | |
515 | .config = p54_config, | |
516 | .bss_info_changed = p54_bss_info_changed, | |
517 | .configure_filter = p54_configure_filter, | |
518 | .conf_tx = p54_conf_tx, | |
519 | .get_stats = p54_get_stats, | |
520 | .get_tx_stats = p54_get_tx_stats | |
521 | }; | |
522 | ||
523 | struct ieee80211_hw *p54_init_common(size_t priv_data_len) | |
524 | { | |
525 | struct ieee80211_hw *dev; | |
526 | struct p54_common *priv; | |
527 | ||
528 | dev = ieee80211_alloc_hw(priv_data_len, &p54_ops); | |
529 | if (!dev) | |
530 | return NULL; | |
531 | ||
532 | priv = dev->priv; | |
533 | priv->hw = dev; | |
534 | priv->mode = NL80211_IFTYPE_UNSPECIFIED; | |
535 | priv->basic_rate_mask = 0x15f; | |
536 | spin_lock_init(&priv->tx_stats_lock); | |
537 | skb_queue_head_init(&priv->tx_queue); | |
538 | skb_queue_head_init(&priv->tx_pending); | |
539 | dev->flags = IEEE80211_HW_RX_INCLUDES_FCS | | |
540 | IEEE80211_HW_SIGNAL_DBM | | |
e0f114e8 CL |
541 | IEEE80211_HW_SUPPORTS_PS | |
542 | IEEE80211_HW_PS_NULLFUNC_STACK | | |
543 | IEEE80211_HW_BEACON_FILTER | | |
0ac0d6ce CL |
544 | IEEE80211_HW_NOISE_DBM; |
545 | ||
546 | dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | | |
547 | BIT(NL80211_IFTYPE_ADHOC) | | |
548 | BIT(NL80211_IFTYPE_AP) | | |
549 | BIT(NL80211_IFTYPE_MESH_POINT); | |
550 | ||
551 | dev->channel_change_time = 1000; /* TODO: find actual value */ | |
46df10ae | 552 | priv->beacon_req_id = cpu_to_le32(0); |
0ac0d6ce CL |
553 | priv->tx_stats[P54_QUEUE_BEACON].limit = 1; |
554 | priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1; | |
555 | priv->tx_stats[P54_QUEUE_MGMT].limit = 3; | |
556 | priv->tx_stats[P54_QUEUE_CAB].limit = 3; | |
557 | priv->tx_stats[P54_QUEUE_DATA].limit = 5; | |
558 | dev->queues = 1; | |
559 | priv->noise = -94; | |
560 | /* | |
561 | * We support at most 8 tries no matter which rate they're at, | |
562 | * we cannot support max_rates * max_rate_tries as we set it | |
563 | * here, but setting it correctly to 4/2 or so would limit us | |
564 | * artificially if the RC algorithm wants just two rates, so | |
565 | * let's say 4/7, we'll redistribute it at TX time, see the | |
566 | * comments there. | |
567 | */ | |
568 | dev->max_rates = 4; | |
569 | dev->max_rate_tries = 7; | |
570 | dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 + | |
571 | sizeof(struct p54_tx_data); | |
572 | ||
573 | mutex_init(&priv->conf_mutex); | |
574 | mutex_init(&priv->eeprom_mutex); | |
575 | init_completion(&priv->eeprom_comp); | |
46df10ae | 576 | init_completion(&priv->beacon_comp); |
0ac0d6ce CL |
577 | INIT_DELAYED_WORK(&priv->work, p54_work); |
578 | ||
579 | return dev; | |
580 | } | |
581 | EXPORT_SYMBOL_GPL(p54_init_common); | |
582 | ||
583 | int p54_register_common(struct ieee80211_hw *dev, struct device *pdev) | |
584 | { | |
585 | struct p54_common *priv = dev->priv; | |
586 | int err; | |
587 | ||
588 | err = ieee80211_register_hw(dev); | |
589 | if (err) { | |
590 | dev_err(pdev, "Cannot register device (%d).\n", err); | |
591 | return err; | |
592 | } | |
593 | ||
594 | #ifdef CONFIG_P54_LEDS | |
595 | err = p54_init_leds(priv); | |
596 | if (err) | |
597 | return err; | |
598 | #endif /* CONFIG_P54_LEDS */ | |
599 | ||
600 | dev_info(pdev, "is registered as '%s'\n", wiphy_name(dev->wiphy)); | |
601 | return 0; | |
602 | } | |
603 | EXPORT_SYMBOL_GPL(p54_register_common); | |
604 | ||
605 | void p54_free_common(struct ieee80211_hw *dev) | |
606 | { | |
607 | struct p54_common *priv = dev->priv; | |
1a9b6679 CL |
608 | unsigned int i; |
609 | ||
610 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) | |
611 | kfree(priv->band_table[i]); | |
0ac0d6ce CL |
612 | |
613 | kfree(priv->iq_autocal); | |
614 | kfree(priv->output_limit); | |
615 | kfree(priv->curve_data); | |
616 | kfree(priv->used_rxkeys); | |
617 | priv->iq_autocal = NULL; | |
618 | priv->output_limit = NULL; | |
619 | priv->curve_data = NULL; | |
620 | priv->used_rxkeys = NULL; | |
621 | ieee80211_free_hw(dev); | |
622 | } | |
623 | EXPORT_SYMBOL_GPL(p54_free_common); | |
624 | ||
625 | void p54_unregister_common(struct ieee80211_hw *dev) | |
626 | { | |
627 | struct p54_common *priv = dev->priv; | |
628 | ||
629 | #ifdef CONFIG_P54_LEDS | |
630 | p54_unregister_leds(priv); | |
631 | #endif /* CONFIG_P54_LEDS */ | |
632 | ||
633 | ieee80211_unregister_hw(dev); | |
634 | mutex_destroy(&priv->conf_mutex); | |
635 | mutex_destroy(&priv->eeprom_mutex); | |
636 | } | |
637 | EXPORT_SYMBOL_GPL(p54_unregister_common); |