?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Add linux-next specific files for 20110831
[linux-2.6/next.git] / drivers / net / wireless / p54 / main.c
blob726a9343f514cb9517f3836617b4354ec30d31fa
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/slab.h>
21 #include <linux/firmware.h>
22 #include <linux/etherdevice.h>
23
24 #include <net/mac80211.h>
25
26 #include "p54.h"
27 #include "lmac.h"
28
29 static int modparam_nohwcrypt;
30 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
31 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
32 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
33 MODULE_DESCRIPTION("Softmac Prism54 common code");
34 MODULE_LICENSE("GPL");
35 MODULE_ALIAS("prism54common");
36
37 static int p54_sta_add_remove(struct ieee80211_hw *hw,
38 struct ieee80211_vif *vif,
39 struct ieee80211_sta *sta)
40 {
41 struct p54_common *priv = hw->priv;
42
43 /*
44 * Notify the firmware that we don't want or we don't
45 * need to buffer frames for this station anymore.
46 */
47
48 p54_sta_unlock(priv, sta->addr);
49
50 return 0;
51 }
52
53 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
54 enum sta_notify_cmd notify_cmd,
55 struct ieee80211_sta *sta)
56 {
57 struct p54_common *priv = dev->priv;
58
59 switch (notify_cmd) {
60 case STA_NOTIFY_AWAKE:
61 /* update the firmware's filter table */
62 p54_sta_unlock(priv, sta->addr);
63 break;
64 default:
65 break;
66 }
67 }
68
69 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
70 bool set)
71 {
72 struct p54_common *priv = dev->priv;
73
74 return p54_update_beacon_tim(priv, sta->aid, set);
75 }
76
77 u8 *p54_find_ie(struct sk_buff *skb, u8 ie)
78 {
79 struct ieee80211_mgmt *mgmt = (void *)skb->data;
80 u8 *pos, *end;
81
82 if (skb->len <= sizeof(mgmt))
83 return NULL;
84
85 pos = (u8 *)mgmt->u.beacon.variable;
86 end = skb->data + skb->len;
87 while (pos < end) {
88 if (pos + 2 + pos[1] > end)
89 return NULL;
90
91 if (pos[0] == ie)
92 return pos;
93
94 pos += 2 + pos[1];
95 }
96 return NULL;
97 }
98
99 static int p54_beacon_format_ie_tim(struct sk_buff *skb)
100 {
101 /*
102 * the good excuse for this mess is ... the firmware.
103 * The dummy TIM MUST be at the end of the beacon frame,
104 * because it'll be overwritten!
105 */
106 u8 *tim;
107 u8 dtim_len;
108 u8 dtim_period;
109 u8 *next;
110
111 tim = p54_find_ie(skb, WLAN_EID_TIM);
112 if (!tim)
113 return 0;
114
115 dtim_len = tim[1];
116 dtim_period = tim[3];
117 next = tim + 2 + dtim_len;
118
119 if (dtim_len < 3)
120 return -EINVAL;
121
122 memmove(tim, next, skb_tail_pointer(skb) - next);
123 tim = skb_tail_pointer(skb) - (dtim_len + 2);
124
125 /* add the dummy at the end */
126 tim[0] = WLAN_EID_TIM;
127 tim[1] = 3;
128 tim[2] = 0;
129 tim[3] = dtim_period;
130 tim[4] = 0;
131
132 if (dtim_len > 3)
133 skb_trim(skb, skb->len - (dtim_len - 3));
134
135 return 0;
136 }
137
138 static int p54_beacon_update(struct p54_common *priv,
139 struct ieee80211_vif *vif)
140 {
141 struct sk_buff *beacon;
142 int ret;
143
144 beacon = ieee80211_beacon_get(priv->hw, vif);
145 if (!beacon)
146 return -ENOMEM;
147 ret = p54_beacon_format_ie_tim(beacon);
148 if (ret)
149 return ret;
150
151 /*
152 * During operation, the firmware takes care of beaconing.
153 * The driver only needs to upload a new beacon template, once
154 * the template was changed by the stack or userspace.
155 *
156 * LMAC API 3.2.2 also specifies that the driver does not need
157 * to cancel the old beacon template by hand, instead the firmware
158 * will release the previous one through the feedback mechanism.
159 */
160 p54_tx_80211(priv->hw, beacon);
161 priv->tsf_high32 = 0;
162 priv->tsf_low32 = 0;
163
164 return 0;
165 }
166
167 static int p54_start(struct ieee80211_hw *dev)
168 {
169 struct p54_common *priv = dev->priv;
170 int err;
171
172 mutex_lock(&priv->conf_mutex);
173 err = priv->open(dev);
174 if (err)
175 goto out;
176 P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
177 P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
178 P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
179 P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
180 err = p54_set_edcf(priv);
181 if (err)
182 goto out;
183
184 memset(priv->bssid, ~0, ETH_ALEN);
185 priv->mode = NL80211_IFTYPE_MONITOR;
186 err = p54_setup_mac(priv);
187 if (err) {
188 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
189 goto out;
190 }
191
192 ieee80211_queue_delayed_work(dev, &priv->work, 0);
193
194 priv->softled_state = 0;
195 err = p54_set_leds(priv);
196
197 out:
198 mutex_unlock(&priv->conf_mutex);
199 return err;
200 }
201
202 static void p54_stop(struct ieee80211_hw *dev)
203 {
204 struct p54_common *priv = dev->priv;
205 int i;
206
207 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
208 priv->softled_state = 0;
209 cancel_delayed_work_sync(&priv->work);
210 mutex_lock(&priv->conf_mutex);
211 p54_set_leds(priv);
212 priv->stop(dev);
213 skb_queue_purge(&priv->tx_pending);
214 skb_queue_purge(&priv->tx_queue);
215 for (i = 0; i < P54_QUEUE_NUM; i++) {
216 priv->tx_stats[i].count = 0;
217 priv->tx_stats[i].len = 0;
218 }
219
220 priv->beacon_req_id = cpu_to_le32(0);
221 priv->tsf_high32 = priv->tsf_low32 = 0;
222 mutex_unlock(&priv->conf_mutex);
223 }
224
225 static int p54_add_interface(struct ieee80211_hw *dev,
226 struct ieee80211_vif *vif)
227 {
228 struct p54_common *priv = dev->priv;
229
230 mutex_lock(&priv->conf_mutex);
231 if (priv->mode != NL80211_IFTYPE_MONITOR) {
232 mutex_unlock(&priv->conf_mutex);
233 return -EOPNOTSUPP;
234 }
235
236 priv->vif = vif;
237
238 switch (vif->type) {
239 case NL80211_IFTYPE_STATION:
240 case NL80211_IFTYPE_ADHOC:
241 case NL80211_IFTYPE_AP:
242 case NL80211_IFTYPE_MESH_POINT:
243 priv->mode = vif->type;
244 break;
245 default:
246 mutex_unlock(&priv->conf_mutex);
247 return -EOPNOTSUPP;
248 }
249
250 memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
251 p54_setup_mac(priv);
252 mutex_unlock(&priv->conf_mutex);
253 return 0;
254 }
255
256 static void p54_remove_interface(struct ieee80211_hw *dev,
257 struct ieee80211_vif *vif)
258 {
259 struct p54_common *priv = dev->priv;
260
261 mutex_lock(&priv->conf_mutex);
262 priv->vif = NULL;
263
264 /*
265 * LMAC API 3.2.2 states that any active beacon template must be
266 * canceled by the driver before attempting a mode transition.
267 */
268 if (le32_to_cpu(priv->beacon_req_id) != 0) {
269 p54_tx_cancel(priv, priv->beacon_req_id);
270 wait_for_completion_interruptible_timeout(&priv->beacon_comp, HZ);
271 }
272 priv->mode = NL80211_IFTYPE_MONITOR;
273 memset(priv->mac_addr, 0, ETH_ALEN);
274 memset(priv->bssid, 0, ETH_ALEN);
275 p54_setup_mac(priv);
276 mutex_unlock(&priv->conf_mutex);
277 }
278
279 static int p54_wait_for_stats(struct ieee80211_hw *dev)
280 {
281 struct p54_common *priv = dev->priv;
282 int ret;
283
284 priv->update_stats = true;
285 ret = p54_fetch_statistics(priv);
286 if (ret)
287 return ret;
288
289 ret = wait_for_completion_interruptible_timeout(&priv->stat_comp, HZ);
290 if (ret == 0)
291 return -ETIMEDOUT;
292
293 return 0;
294 }
295
296 static void p54_reset_stats(struct p54_common *priv)
297 {
298 struct ieee80211_channel *chan = priv->curchan;
299
300 if (chan) {
301 struct survey_info *info = &priv->survey[chan->hw_value];
302
303 /* only reset channel statistics, don't touch .filled, etc. */
304 info->channel_time = 0;
305 info->channel_time_busy = 0;
306 info->channel_time_tx = 0;
307 }
308
309 priv->update_stats = true;
310 priv->survey_raw.active = 0;
311 priv->survey_raw.cca = 0;
312 priv->survey_raw.tx = 0;
313 }
314
315 static int p54_config(struct ieee80211_hw *dev, u32 changed)
316 {
317 int ret = 0;
318 struct p54_common *priv = dev->priv;
319 struct ieee80211_conf *conf = &dev->conf;
320
321 mutex_lock(&priv->conf_mutex);
322 if (changed & IEEE80211_CONF_CHANGE_POWER)
323 priv->output_power = conf->power_level << 2;
324 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
325 struct ieee80211_channel *oldchan;
326 WARN_ON(p54_wait_for_stats(dev));
327 oldchan = priv->curchan;
328 priv->curchan = NULL;
329 ret = p54_scan(priv, P54_SCAN_EXIT, 0);
330 if (ret) {
331 priv->curchan = oldchan;
332 goto out;
333 }
334 /*
335 * TODO: Use the LM_SCAN_TRAP to determine the current
336 * operating channel.
337 */
338 priv->curchan = priv->hw->conf.channel;
339 p54_reset_stats(priv);
340 WARN_ON(p54_fetch_statistics(priv));
341 }
342 if (changed & IEEE80211_CONF_CHANGE_PS) {
343 WARN_ON(p54_wait_for_stats(dev));
344 ret = p54_set_ps(priv);
345 if (ret)
346 goto out;
347 WARN_ON(p54_wait_for_stats(dev));
348 }
349 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
350 WARN_ON(p54_wait_for_stats(dev));
351 ret = p54_setup_mac(priv);
352 if (ret)
353 goto out;
354 WARN_ON(p54_wait_for_stats(dev));
355 }
356
357 out:
358 mutex_unlock(&priv->conf_mutex);
359 return ret;
360 }
361
362 static u64 p54_prepare_multicast(struct ieee80211_hw *dev,
363 struct netdev_hw_addr_list *mc_list)
364 {
365 struct p54_common *priv = dev->priv;
366 struct netdev_hw_addr *ha;
367 int i;
368
369 BUILD_BUG_ON(ARRAY_SIZE(priv->mc_maclist) !=
370 ARRAY_SIZE(((struct p54_group_address_table *)NULL)->mac_list));
371 /*
372 * The first entry is reserved for the global broadcast MAC.
373 * Otherwise the firmware will drop it and ARP will no longer work.
374 */
375 i = 1;
376 priv->mc_maclist_num = netdev_hw_addr_list_count(mc_list) + i;
377 netdev_hw_addr_list_for_each(ha, mc_list) {
378 memcpy(&priv->mc_maclist[i], ha->addr, ETH_ALEN);
379 i++;
380 if (i >= ARRAY_SIZE(priv->mc_maclist))
381 break;
382 }
383
384 return 1; /* update */
385 }
386
387 static void p54_configure_filter(struct ieee80211_hw *dev,
388 unsigned int changed_flags,
389 unsigned int *total_flags,
390 u64 multicast)
391 {
392 struct p54_common *priv = dev->priv;
393
394 *total_flags &= FIF_PROMISC_IN_BSS |
395 FIF_ALLMULTI |
396 FIF_OTHER_BSS;
397
398 priv->filter_flags = *total_flags;
399
400 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS))
401 p54_setup_mac(priv);
402
403 if (changed_flags & FIF_ALLMULTI || multicast)
404 p54_set_groupfilter(priv);
405 }
406
407 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
408 const struct ieee80211_tx_queue_params *params)
409 {
410 struct p54_common *priv = dev->priv;
411 int ret;
412
413 mutex_lock(&priv->conf_mutex);
414 if (queue < dev->queues) {
415 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
416 params->cw_min, params->cw_max, params->txop);
417 ret = p54_set_edcf(priv);
418 } else
419 ret = -EINVAL;
420 mutex_unlock(&priv->conf_mutex);
421 return ret;
422 }
423
424 static void p54_work(struct work_struct *work)
425 {
426 struct p54_common *priv = container_of(work, struct p54_common,
427 work.work);
428
429 if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
430 return ;
431
432 /*
433 * TODO: walk through tx_queue and do the following tasks
434 * 1. initiate bursts.
435 * 2. cancel stuck frames / reset the device if necessary.
436 */
437
438 mutex_lock(&priv->conf_mutex);
439 WARN_ON_ONCE(p54_fetch_statistics(priv));
440 mutex_unlock(&priv->conf_mutex);
441 }
442
443 static int p54_get_stats(struct ieee80211_hw *dev,
444 struct ieee80211_low_level_stats *stats)
445 {
446 struct p54_common *priv = dev->priv;
447
448 memcpy(stats, &priv->stats, sizeof(*stats));
449 return 0;
450 }
451
452 static void p54_bss_info_changed(struct ieee80211_hw *dev,
453 struct ieee80211_vif *vif,
454 struct ieee80211_bss_conf *info,
455 u32 changed)
456 {
457 struct p54_common *priv = dev->priv;
458
459 mutex_lock(&priv->conf_mutex);
460 if (changed & BSS_CHANGED_BSSID) {
461 memcpy(priv->bssid, info->bssid, ETH_ALEN);
462 p54_setup_mac(priv);
463 }
464
465 if (changed & BSS_CHANGED_BEACON) {
466 p54_scan(priv, P54_SCAN_EXIT, 0);
467 p54_setup_mac(priv);
468 p54_beacon_update(priv, vif);
469 p54_set_edcf(priv);
470 }
471
472 if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_BEACON)) {
473 priv->use_short_slot = info->use_short_slot;
474 p54_set_edcf(priv);
475 }
476 if (changed & BSS_CHANGED_BASIC_RATES) {
477 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
478 priv->basic_rate_mask = (info->basic_rates << 4);
479 else
480 priv->basic_rate_mask = info->basic_rates;
481 p54_setup_mac(priv);
482 if (priv->fw_var >= 0x500)
483 p54_scan(priv, P54_SCAN_EXIT, 0);
484 }
485 if (changed & BSS_CHANGED_ASSOC) {
486 if (info->assoc) {
487 priv->aid = info->aid;
488 priv->wakeup_timer = info->beacon_int *
489 info->dtim_period * 5;
490 p54_setup_mac(priv);
491 } else {
492 priv->wakeup_timer = 500;
493 priv->aid = 0;
494 }
495 }
496
497 mutex_unlock(&priv->conf_mutex);
498 }
499
500 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
501 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
502 struct ieee80211_key_conf *key)
503 {
504 struct p54_common *priv = dev->priv;
505 int slot, ret = 0;
506 u8 algo = 0;
507 u8 *addr = NULL;
508
509 if (modparam_nohwcrypt)
510 return -EOPNOTSUPP;
511
512 mutex_lock(&priv->conf_mutex);
513 if (cmd == SET_KEY) {
514 switch (key->cipher) {
515 case WLAN_CIPHER_SUITE_TKIP:
516 if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
517 BR_DESC_PRIV_CAP_TKIP))) {
518 ret = -EOPNOTSUPP;
519 goto out_unlock;
520 }
521 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
522 algo = P54_CRYPTO_TKIPMICHAEL;
523 break;
524 case WLAN_CIPHER_SUITE_WEP40:
525 case WLAN_CIPHER_SUITE_WEP104:
526 if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP)) {
527 ret = -EOPNOTSUPP;
528 goto out_unlock;
529 }
530 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
531 algo = P54_CRYPTO_WEP;
532 break;
533 case WLAN_CIPHER_SUITE_CCMP:
534 if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)) {
535 ret = -EOPNOTSUPP;
536 goto out_unlock;
537 }
538 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
539 algo = P54_CRYPTO_AESCCMP;
540 break;
541 default:
542 ret = -EOPNOTSUPP;
543 goto out_unlock;
544 }
545 slot = bitmap_find_free_region(priv->used_rxkeys,
546 priv->rx_keycache_size, 0);
547
548 if (slot < 0) {
549 /*
550 * The device supports the chosen algorithm, but the
551 * firmware does not provide enough key slots to store
552 * all of them.
553 * But encryption offload for outgoing frames is always
554 * possible, so we just pretend that the upload was
555 * successful and do the decryption in software.
556 */
557
558 /* mark the key as invalid. */
559 key->hw_key_idx = 0xff;
560 goto out_unlock;
561 }
562 } else {
563 slot = key->hw_key_idx;
564
565 if (slot == 0xff) {
566 /* This key was not uploaded into the rx key cache. */
567
568 goto out_unlock;
569 }
570
571 bitmap_release_region(priv->used_rxkeys, slot, 0);
572 algo = 0;
573 }
574
575 if (sta)
576 addr = sta->addr;
577
578 ret = p54_upload_key(priv, algo, slot, key->keyidx,
579 key->keylen, addr, key->key);
580 if (ret) {
581 bitmap_release_region(priv->used_rxkeys, slot, 0);
582 ret = -EOPNOTSUPP;
583 goto out_unlock;
584 }
585
586 key->hw_key_idx = slot;
587
588 out_unlock:
589 mutex_unlock(&priv->conf_mutex);
590 return ret;
591 }
592
593 static int p54_get_survey(struct ieee80211_hw *dev, int idx,
594 struct survey_info *survey)
595 {
596 struct p54_common *priv = dev->priv;
597 struct ieee80211_channel *chan;
598 int err, tries;
599 bool in_use = false;
600
601 if (idx >= priv->chan_num)
602 return -ENOENT;
603
604 #define MAX_TRIES 1
605 for (tries = 0; tries < MAX_TRIES; tries++) {
606 chan = priv->curchan;
607 if (chan && chan->hw_value == idx) {
608 mutex_lock(&priv->conf_mutex);
609 err = p54_wait_for_stats(dev);
610 mutex_unlock(&priv->conf_mutex);
611 if (err)
612 return err;
613
614 in_use = true;
615 }
616
617 memcpy(survey, &priv->survey[idx], sizeof(*survey));
618
619 if (in_use) {
620 /* test if the reported statistics are valid. */
621 if (survey->channel_time != 0) {
622 survey->filled |= SURVEY_INFO_IN_USE;
623 } else {
624 /*
625 * hw/fw has not accumulated enough sample sets.
626 * Wait for 100ms, this ought to be enough to
627 * to get at least one non-null set of channel
628 * usage statistics.
629 */
630 msleep(100);
631 continue;
632 }
633 }
634 return 0;
635 }
636 return -ETIMEDOUT;
637 #undef MAX_TRIES
638 }
639
640 static unsigned int p54_flush_count(struct p54_common *priv)
641 {
642 unsigned int total = 0, i;
643
644 BUILD_BUG_ON(P54_QUEUE_NUM > ARRAY_SIZE(priv->tx_stats));
645
646 /*
647 * Because the firmware has the sole control over any frames
648 * in the P54_QUEUE_BEACON or P54_QUEUE_SCAN queues, they
649 * don't really count as pending or active.
650 */
651 for (i = P54_QUEUE_MGMT; i < P54_QUEUE_NUM; i++)
652 total += priv->tx_stats[i].len;
653 return total;
654 }
655
656 static void p54_flush(struct ieee80211_hw *dev, bool drop)
657 {
658 struct p54_common *priv = dev->priv;
659 unsigned int total, i;
660
661 /*
662 * Currently, it wouldn't really matter if we wait for one second
663 * or 15 minutes. But once someone gets around and completes the
664 * TODOs [ancel stuck frames / reset device] in p54_work, it will
665 * suddenly make sense to wait that long.
666 */
667 i = P54_STATISTICS_UPDATE * 2 / 20;
668
669 /*
670 * In this case no locking is required because as we speak the
671 * queues have already been stopped and no new frames can sneak
672 * up from behind.
673 */
674 while ((total = p54_flush_count(priv) && i--)) {
675 /* waste time */
676 msleep(20);
677 }
678
679 WARN(total, "tx flush timeout, unresponsive firmware");
680 }
681
682 static void p54_set_coverage_class(struct ieee80211_hw *dev, u8 coverage_class)
683 {
684 struct p54_common *priv = dev->priv;
685
686 mutex_lock(&priv->conf_mutex);
687 /* support all coverage class values as in 802.11-2007 Table 7-27 */
688 priv->coverage_class = clamp_t(u8, coverage_class, 0, 31);
689 p54_set_edcf(priv);
690 mutex_unlock(&priv->conf_mutex);
691 }
692
693 static const struct ieee80211_ops p54_ops = {
694 .tx = p54_tx_80211,
695 .start = p54_start,
696 .stop = p54_stop,
697 .add_interface = p54_add_interface,
698 .remove_interface = p54_remove_interface,
699 .set_tim = p54_set_tim,
700 .sta_notify = p54_sta_notify,
701 .sta_add = p54_sta_add_remove,
702 .sta_remove = p54_sta_add_remove,
703 .set_key = p54_set_key,
704 .config = p54_config,
705 .flush = p54_flush,
706 .bss_info_changed = p54_bss_info_changed,
707 .prepare_multicast = p54_prepare_multicast,
708 .configure_filter = p54_configure_filter,
709 .conf_tx = p54_conf_tx,
710 .get_stats = p54_get_stats,
711 .get_survey = p54_get_survey,
712 .set_coverage_class = p54_set_coverage_class,
713 };
714
715 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
716 {
717 struct ieee80211_hw *dev;
718 struct p54_common *priv;
719
720 dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
721 if (!dev)
722 return NULL;
723
724 priv = dev->priv;
725 priv->hw = dev;
726 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
727 priv->basic_rate_mask = 0x15f;
728 spin_lock_init(&priv->tx_stats_lock);
729 skb_queue_head_init(&priv->tx_queue);
730 skb_queue_head_init(&priv->tx_pending);
731 dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
732 IEEE80211_HW_SIGNAL_DBM |
733 IEEE80211_HW_SUPPORTS_PS |
734 IEEE80211_HW_PS_NULLFUNC_STACK |
735 IEEE80211_HW_BEACON_FILTER |
736 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
737
738 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
739 BIT(NL80211_IFTYPE_ADHOC) |
740 BIT(NL80211_IFTYPE_AP) |
741 BIT(NL80211_IFTYPE_MESH_POINT);
742
743 dev->channel_change_time = 1000; /* TODO: find actual value */
744 priv->beacon_req_id = cpu_to_le32(0);
745 priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
746 priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
747 priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
748 priv->tx_stats[P54_QUEUE_CAB].limit = 3;
749 priv->tx_stats[P54_QUEUE_DATA].limit = 5;
750 dev->queues = 1;
751 priv->noise = -94;
752 /*
753 * We support at most 8 tries no matter which rate they're at,
754 * we cannot support max_rates * max_rate_tries as we set it
755 * here, but setting it correctly to 4/2 or so would limit us
756 * artificially if the RC algorithm wants just two rates, so
757 * let's say 4/7, we'll redistribute it at TX time, see the
758 * comments there.
759 */
760 dev->max_rates = 4;
761 dev->max_rate_tries = 7;
762 dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
763 sizeof(struct p54_tx_data);
764
765 /*
766 * For now, disable PS by default because it affects
767 * link stability significantly.
768 */
769 dev->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
770
771 mutex_init(&priv->conf_mutex);
772 mutex_init(&priv->eeprom_mutex);
773 init_completion(&priv->stat_comp);
774 init_completion(&priv->eeprom_comp);
775 init_completion(&priv->beacon_comp);
776 INIT_DELAYED_WORK(&priv->work, p54_work);
777
778 memset(&priv->mc_maclist[0], ~0, ETH_ALEN);
779 priv->curchan = NULL;
780 p54_reset_stats(priv);
781 return dev;
782 }
783 EXPORT_SYMBOL_GPL(p54_init_common);
784
785 int p54_register_common(struct ieee80211_hw *dev, struct device *pdev)
786 {
787 struct p54_common __maybe_unused *priv = dev->priv;
788 int err;
789
790 err = ieee80211_register_hw(dev);
791 if (err) {
792 dev_err(pdev, "Cannot register device (%d).\n", err);
793 return err;
794 }
795
796 #ifdef CONFIG_P54_LEDS
797 err = p54_init_leds(priv);
798 if (err)
799 return err;
800 #endif /* CONFIG_P54_LEDS */
801
802 dev_info(pdev, "is registered as '%s'\n", wiphy_name(dev->wiphy));
803 return 0;
804 }
805 EXPORT_SYMBOL_GPL(p54_register_common);
806
807 void p54_free_common(struct ieee80211_hw *dev)
808 {
809 struct p54_common *priv = dev->priv;
810 unsigned int i;
811
812 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
813 kfree(priv->band_table[i]);
814
815 kfree(priv->iq_autocal);
816 kfree(priv->output_limit);
817 kfree(priv->curve_data);
818 kfree(priv->rssi_db);
819 kfree(priv->used_rxkeys);
820 kfree(priv->survey);
821 priv->iq_autocal = NULL;
822 priv->output_limit = NULL;
823 priv->curve_data = NULL;
824 priv->rssi_db = NULL;
825 priv->used_rxkeys = NULL;
826 priv->survey = NULL;
827 ieee80211_free_hw(dev);
828 }
829 EXPORT_SYMBOL_GPL(p54_free_common);
830
831 void p54_unregister_common(struct ieee80211_hw *dev)
832 {
833 struct p54_common *priv = dev->priv;
834
835 #ifdef CONFIG_P54_LEDS
836 p54_unregister_leds(priv);
837 #endif /* CONFIG_P54_LEDS */
838
839 ieee80211_unregister_hw(dev);
840 mutex_destroy(&priv->conf_mutex);
841 mutex_destroy(&priv->eeprom_mutex);
842 }
843 EXPORT_SYMBOL_GPL(p54_unregister_common);
linux-next