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ARM: mm: Recreate kernel mappings in early_paging_init()
[linux/fpc-iii.git] / drivers / net / wireless / p54 / main.c
blob067e6f2fd050fcad0ddc4eb00565ba3324397894
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 #include <linux/module.h>
24
25 #include <net/mac80211.h>
26
27 #include "p54.h"
28 #include "lmac.h"
29
30 static bool modparam_nohwcrypt;
31 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
32 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
33 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
34 MODULE_DESCRIPTION("Softmac Prism54 common code");
35 MODULE_LICENSE("GPL");
36 MODULE_ALIAS("prism54common");
37
38 static int p54_sta_add_remove(struct ieee80211_hw *hw,
39 struct ieee80211_vif *vif,
40 struct ieee80211_sta *sta)
41 {
42 struct p54_common *priv = hw->priv;
43
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
51 return 0;
52 }
53
54 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
55 enum sta_notify_cmd notify_cmd,
56 struct ieee80211_sta *sta)
57 {
58 struct p54_common *priv = dev->priv;
59
60 switch (notify_cmd) {
61 case STA_NOTIFY_AWAKE:
62 /* update the firmware's filter table */
63 p54_sta_unlock(priv, sta->addr);
64 break;
65 default:
66 break;
67 }
68 }
69
70 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
71 bool set)
72 {
73 struct p54_common *priv = dev->priv;
74
75 return p54_update_beacon_tim(priv, sta->aid, set);
76 }
77
78 u8 *p54_find_ie(struct sk_buff *skb, u8 ie)
79 {
80 struct ieee80211_mgmt *mgmt = (void *)skb->data;
81 u8 *pos, *end;
82
83 if (skb->len <= sizeof(mgmt))
84 return NULL;
85
86 pos = (u8 *)mgmt->u.beacon.variable;
87 end = skb->data + skb->len;
88 while (pos < end) {
89 if (pos + 2 + pos[1] > end)
90 return NULL;
91
92 if (pos[0] == ie)
93 return pos;
94
95 pos += 2 + pos[1];
96 }
97 return NULL;
98 }
99
100 static int p54_beacon_format_ie_tim(struct sk_buff *skb)
101 {
102 /*
103 * the good excuse for this mess is ... the firmware.
104 * The dummy TIM MUST be at the end of the beacon frame,
105 * because it'll be overwritten!
106 */
107 u8 *tim;
108 u8 dtim_len;
109 u8 dtim_period;
110 u8 *next;
111
112 tim = p54_find_ie(skb, WLAN_EID_TIM);
113 if (!tim)
114 return 0;
115
116 dtim_len = tim[1];
117 dtim_period = tim[3];
118 next = tim + 2 + dtim_len;
119
120 if (dtim_len < 3)
121 return -EINVAL;
122
123 memmove(tim, next, skb_tail_pointer(skb) - next);
124 tim = skb_tail_pointer(skb) - (dtim_len + 2);
125
126 /* add the dummy at the end */
127 tim[0] = WLAN_EID_TIM;
128 tim[1] = 3;
129 tim[2] = 0;
130 tim[3] = dtim_period;
131 tim[4] = 0;
132
133 if (dtim_len > 3)
134 skb_trim(skb, skb->len - (dtim_len - 3));
135
136 return 0;
137 }
138
139 static int p54_beacon_update(struct p54_common *priv,
140 struct ieee80211_vif *vif)
141 {
142 struct ieee80211_tx_control control = { };
143 struct sk_buff *beacon;
144 int ret;
145
146 beacon = ieee80211_beacon_get(priv->hw, vif);
147 if (!beacon)
148 return -ENOMEM;
149 ret = p54_beacon_format_ie_tim(beacon);
150 if (ret)
151 return ret;
152
153 /*
154 * During operation, the firmware takes care of beaconing.
155 * The driver only needs to upload a new beacon template, once
156 * the template was changed by the stack or userspace.
157 *
158 * LMAC API 3.2.2 also specifies that the driver does not need
159 * to cancel the old beacon template by hand, instead the firmware
160 * will release the previous one through the feedback mechanism.
161 */
162 p54_tx_80211(priv->hw, &control, beacon);
163 priv->tsf_high32 = 0;
164 priv->tsf_low32 = 0;
165
166 return 0;
167 }
168
169 static int p54_start(struct ieee80211_hw *dev)
170 {
171 struct p54_common *priv = dev->priv;
172 int err;
173
174 mutex_lock(&priv->conf_mutex);
175 err = priv->open(dev);
176 if (err)
177 goto out;
178 P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
179 P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
180 P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
181 P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
182 err = p54_set_edcf(priv);
183 if (err)
184 goto out;
185
186 memset(priv->bssid, ~0, ETH_ALEN);
187 priv->mode = NL80211_IFTYPE_MONITOR;
188 err = p54_setup_mac(priv);
189 if (err) {
190 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
191 goto out;
192 }
193
194 ieee80211_queue_delayed_work(dev, &priv->work, 0);
195
196 priv->softled_state = 0;
197 err = p54_set_leds(priv);
198
199 out:
200 mutex_unlock(&priv->conf_mutex);
201 return err;
202 }
203
204 static void p54_stop(struct ieee80211_hw *dev)
205 {
206 struct p54_common *priv = dev->priv;
207 int i;
208
209 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
210 priv->softled_state = 0;
211 cancel_delayed_work_sync(&priv->work);
212 mutex_lock(&priv->conf_mutex);
213 p54_set_leds(priv);
214 priv->stop(dev);
215 skb_queue_purge(&priv->tx_pending);
216 skb_queue_purge(&priv->tx_queue);
217 for (i = 0; i < P54_QUEUE_NUM; i++) {
218 priv->tx_stats[i].count = 0;
219 priv->tx_stats[i].len = 0;
220 }
221
222 priv->beacon_req_id = cpu_to_le32(0);
223 priv->tsf_high32 = priv->tsf_low32 = 0;
224 mutex_unlock(&priv->conf_mutex);
225 }
226
227 static int p54_add_interface(struct ieee80211_hw *dev,
228 struct ieee80211_vif *vif)
229 {
230 struct p54_common *priv = dev->priv;
231 int err;
232
233 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER;
234
235 mutex_lock(&priv->conf_mutex);
236 if (priv->mode != NL80211_IFTYPE_MONITOR) {
237 mutex_unlock(&priv->conf_mutex);
238 return -EOPNOTSUPP;
239 }
240
241 priv->vif = vif;
242
243 switch (vif->type) {
244 case NL80211_IFTYPE_STATION:
245 case NL80211_IFTYPE_ADHOC:
246 case NL80211_IFTYPE_AP:
247 case NL80211_IFTYPE_MESH_POINT:
248 priv->mode = vif->type;
249 break;
250 default:
251 mutex_unlock(&priv->conf_mutex);
252 return -EOPNOTSUPP;
253 }
254
255 memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
256 err = p54_setup_mac(priv);
257 mutex_unlock(&priv->conf_mutex);
258 return err;
259 }
260
261 static void p54_remove_interface(struct ieee80211_hw *dev,
262 struct ieee80211_vif *vif)
263 {
264 struct p54_common *priv = dev->priv;
265
266 mutex_lock(&priv->conf_mutex);
267 priv->vif = NULL;
268
269 /*
270 * LMAC API 3.2.2 states that any active beacon template must be
271 * canceled by the driver before attempting a mode transition.
272 */
273 if (le32_to_cpu(priv->beacon_req_id) != 0) {
274 p54_tx_cancel(priv, priv->beacon_req_id);
275 wait_for_completion_interruptible_timeout(&priv->beacon_comp, HZ);
276 }
277 priv->mode = NL80211_IFTYPE_MONITOR;
278 memset(priv->mac_addr, 0, ETH_ALEN);
279 memset(priv->bssid, 0, ETH_ALEN);
280 p54_setup_mac(priv);
281 mutex_unlock(&priv->conf_mutex);
282 }
283
284 static int p54_wait_for_stats(struct ieee80211_hw *dev)
285 {
286 struct p54_common *priv = dev->priv;
287 int ret;
288
289 priv->update_stats = true;
290 ret = p54_fetch_statistics(priv);
291 if (ret)
292 return ret;
293
294 ret = wait_for_completion_interruptible_timeout(&priv->stat_comp, HZ);
295 if (ret == 0)
296 return -ETIMEDOUT;
297
298 return 0;
299 }
300
301 static void p54_reset_stats(struct p54_common *priv)
302 {
303 struct ieee80211_channel *chan = priv->curchan;
304
305 if (chan) {
306 struct survey_info *info = &priv->survey[chan->hw_value];
307
308 /* only reset channel statistics, don't touch .filled, etc. */
309 info->channel_time = 0;
310 info->channel_time_busy = 0;
311 info->channel_time_tx = 0;
312 }
313
314 priv->update_stats = true;
315 priv->survey_raw.active = 0;
316 priv->survey_raw.cca = 0;
317 priv->survey_raw.tx = 0;
318 }
319
320 static int p54_config(struct ieee80211_hw *dev, u32 changed)
321 {
322 int ret = 0;
323 struct p54_common *priv = dev->priv;
324 struct ieee80211_conf *conf = &dev->conf;
325
326 mutex_lock(&priv->conf_mutex);
327 if (changed & IEEE80211_CONF_CHANGE_POWER)
328 priv->output_power = conf->power_level << 2;
329 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
330 struct ieee80211_channel *oldchan;
331 WARN_ON(p54_wait_for_stats(dev));
332 oldchan = priv->curchan;
333 priv->curchan = NULL;
334 ret = p54_scan(priv, P54_SCAN_EXIT, 0);
335 if (ret) {
336 priv->curchan = oldchan;
337 goto out;
338 }
339 /*
340 * TODO: Use the LM_SCAN_TRAP to determine the current
341 * operating channel.
342 */
343 priv->curchan = priv->hw->conf.chandef.chan;
344 p54_reset_stats(priv);
345 WARN_ON(p54_fetch_statistics(priv));
346 }
347 if (changed & IEEE80211_CONF_CHANGE_PS) {
348 WARN_ON(p54_wait_for_stats(dev));
349 ret = p54_set_ps(priv);
350 if (ret)
351 goto out;
352 WARN_ON(p54_wait_for_stats(dev));
353 }
354 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
355 WARN_ON(p54_wait_for_stats(dev));
356 ret = p54_setup_mac(priv);
357 if (ret)
358 goto out;
359 WARN_ON(p54_wait_for_stats(dev));
360 }
361
362 out:
363 mutex_unlock(&priv->conf_mutex);
364 return ret;
365 }
366
367 static u64 p54_prepare_multicast(struct ieee80211_hw *dev,
368 struct netdev_hw_addr_list *mc_list)
369 {
370 struct p54_common *priv = dev->priv;
371 struct netdev_hw_addr *ha;
372 int i;
373
374 BUILD_BUG_ON(ARRAY_SIZE(priv->mc_maclist) !=
375 ARRAY_SIZE(((struct p54_group_address_table *)NULL)->mac_list));
376 /*
377 * The first entry is reserved for the global broadcast MAC.
378 * Otherwise the firmware will drop it and ARP will no longer work.
379 */
380 i = 1;
381 priv->mc_maclist_num = netdev_hw_addr_list_count(mc_list) + i;
382 netdev_hw_addr_list_for_each(ha, mc_list) {
383 memcpy(&priv->mc_maclist[i], ha->addr, ETH_ALEN);
384 i++;
385 if (i >= ARRAY_SIZE(priv->mc_maclist))
386 break;
387 }
388
389 return 1; /* update */
390 }
391
392 static void p54_configure_filter(struct ieee80211_hw *dev,
393 unsigned int changed_flags,
394 unsigned int *total_flags,
395 u64 multicast)
396 {
397 struct p54_common *priv = dev->priv;
398
399 *total_flags &= FIF_PROMISC_IN_BSS |
400 FIF_ALLMULTI |
401 FIF_OTHER_BSS;
402
403 priv->filter_flags = *total_flags;
404
405 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS))
406 p54_setup_mac(priv);
407
408 if (changed_flags & FIF_ALLMULTI || multicast)
409 p54_set_groupfilter(priv);
410 }
411
412 static int p54_conf_tx(struct ieee80211_hw *dev,
413 struct ieee80211_vif *vif, u16 queue,
414 const struct ieee80211_tx_queue_params *params)
415 {
416 struct p54_common *priv = dev->priv;
417 int ret;
418
419 mutex_lock(&priv->conf_mutex);
420 if (queue < dev->queues) {
421 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
422 params->cw_min, params->cw_max, params->txop);
423 ret = p54_set_edcf(priv);
424 } else
425 ret = -EINVAL;
426 mutex_unlock(&priv->conf_mutex);
427 return ret;
428 }
429
430 static void p54_work(struct work_struct *work)
431 {
432 struct p54_common *priv = container_of(work, struct p54_common,
433 work.work);
434
435 if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
436 return ;
437
438 /*
439 * TODO: walk through tx_queue and do the following tasks
440 * 1. initiate bursts.
441 * 2. cancel stuck frames / reset the device if necessary.
442 */
443
444 mutex_lock(&priv->conf_mutex);
445 WARN_ON_ONCE(p54_fetch_statistics(priv));
446 mutex_unlock(&priv->conf_mutex);
447 }
448
449 static int p54_get_stats(struct ieee80211_hw *dev,
450 struct ieee80211_low_level_stats *stats)
451 {
452 struct p54_common *priv = dev->priv;
453
454 memcpy(stats, &priv->stats, sizeof(*stats));
455 return 0;
456 }
457
458 static void p54_bss_info_changed(struct ieee80211_hw *dev,
459 struct ieee80211_vif *vif,
460 struct ieee80211_bss_conf *info,
461 u32 changed)
462 {
463 struct p54_common *priv = dev->priv;
464
465 mutex_lock(&priv->conf_mutex);
466 if (changed & BSS_CHANGED_BSSID) {
467 memcpy(priv->bssid, info->bssid, ETH_ALEN);
468 p54_setup_mac(priv);
469 }
470
471 if (changed & BSS_CHANGED_BEACON) {
472 p54_scan(priv, P54_SCAN_EXIT, 0);
473 p54_setup_mac(priv);
474 p54_beacon_update(priv, vif);
475 p54_set_edcf(priv);
476 }
477
478 if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_BEACON)) {
479 priv->use_short_slot = info->use_short_slot;
480 p54_set_edcf(priv);
481 }
482 if (changed & BSS_CHANGED_BASIC_RATES) {
483 if (dev->conf.chandef.chan->band == IEEE80211_BAND_5GHZ)
484 priv->basic_rate_mask = (info->basic_rates << 4);
485 else
486 priv->basic_rate_mask = info->basic_rates;
487 p54_setup_mac(priv);
488 if (priv->fw_var >= 0x500)
489 p54_scan(priv, P54_SCAN_EXIT, 0);
490 }
491 if (changed & BSS_CHANGED_ASSOC) {
492 if (info->assoc) {
493 priv->aid = info->aid;
494 priv->wakeup_timer = info->beacon_int *
495 info->dtim_period * 5;
496 p54_setup_mac(priv);
497 } else {
498 priv->wakeup_timer = 500;
499 priv->aid = 0;
500 }
501 }
502
503 mutex_unlock(&priv->conf_mutex);
504 }
505
506 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
507 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
508 struct ieee80211_key_conf *key)
509 {
510 struct p54_common *priv = dev->priv;
511 int slot, ret = 0;
512 u8 algo = 0;
513 u8 *addr = NULL;
514
515 if (modparam_nohwcrypt)
516 return -EOPNOTSUPP;
517
518 if (key->flags & IEEE80211_KEY_FLAG_RX_MGMT) {
519 /*
520 * Unfortunately most/all firmwares are trying to decrypt
521 * incoming management frames if a suitable key can be found.
522 * However, in doing so the data in these frames gets
523 * corrupted. So, we can't have firmware supported crypto
524 * offload in this case.
525 */
526 return -EOPNOTSUPP;
527 }
528
529 mutex_lock(&priv->conf_mutex);
530 if (cmd == SET_KEY) {
531 switch (key->cipher) {
532 case WLAN_CIPHER_SUITE_TKIP:
533 if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
534 BR_DESC_PRIV_CAP_TKIP))) {
535 ret = -EOPNOTSUPP;
536 goto out_unlock;
537 }
538 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
539 algo = P54_CRYPTO_TKIPMICHAEL;
540 break;
541 case WLAN_CIPHER_SUITE_WEP40:
542 case WLAN_CIPHER_SUITE_WEP104:
543 if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP)) {
544 ret = -EOPNOTSUPP;
545 goto out_unlock;
546 }
547 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
548 algo = P54_CRYPTO_WEP;
549 break;
550 case WLAN_CIPHER_SUITE_CCMP:
551 if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)) {
552 ret = -EOPNOTSUPP;
553 goto out_unlock;
554 }
555 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
556 algo = P54_CRYPTO_AESCCMP;
557 break;
558 default:
559 ret = -EOPNOTSUPP;
560 goto out_unlock;
561 }
562 slot = bitmap_find_free_region(priv->used_rxkeys,
563 priv->rx_keycache_size, 0);
564
565 if (slot < 0) {
566 /*
567 * The device supports the chosen algorithm, but the
568 * firmware does not provide enough key slots to store
569 * all of them.
570 * But encryption offload for outgoing frames is always
571 * possible, so we just pretend that the upload was
572 * successful and do the decryption in software.
573 */
574
575 /* mark the key as invalid. */
576 key->hw_key_idx = 0xff;
577 goto out_unlock;
578 }
579 } else {
580 slot = key->hw_key_idx;
581
582 if (slot == 0xff) {
583 /* This key was not uploaded into the rx key cache. */
584
585 goto out_unlock;
586 }
587
588 bitmap_release_region(priv->used_rxkeys, slot, 0);
589 algo = 0;
590 }
591
592 if (sta)
593 addr = sta->addr;
594
595 ret = p54_upload_key(priv, algo, slot, key->keyidx,
596 key->keylen, addr, key->key);
597 if (ret) {
598 bitmap_release_region(priv->used_rxkeys, slot, 0);
599 ret = -EOPNOTSUPP;
600 goto out_unlock;
601 }
602
603 key->hw_key_idx = slot;
604
605 out_unlock:
606 mutex_unlock(&priv->conf_mutex);
607 return ret;
608 }
609
610 static int p54_get_survey(struct ieee80211_hw *dev, int idx,
611 struct survey_info *survey)
612 {
613 struct p54_common *priv = dev->priv;
614 struct ieee80211_channel *chan;
615 int err, tries;
616 bool in_use = false;
617
618 if (idx >= priv->chan_num)
619 return -ENOENT;
620
621 #define MAX_TRIES 1
622 for (tries = 0; tries < MAX_TRIES; tries++) {
623 chan = priv->curchan;
624 if (chan && chan->hw_value == idx) {
625 mutex_lock(&priv->conf_mutex);
626 err = p54_wait_for_stats(dev);
627 mutex_unlock(&priv->conf_mutex);
628 if (err)
629 return err;
630
631 in_use = true;
632 }
633
634 memcpy(survey, &priv->survey[idx], sizeof(*survey));
635
636 if (in_use) {
637 /* test if the reported statistics are valid. */
638 if (survey->channel_time != 0) {
639 survey->filled |= SURVEY_INFO_IN_USE;
640 } else {
641 /*
642 * hw/fw has not accumulated enough sample sets.
643 * Wait for 100ms, this ought to be enough to
644 * to get at least one non-null set of channel
645 * usage statistics.
646 */
647 msleep(100);
648 continue;
649 }
650 }
651 return 0;
652 }
653 return -ETIMEDOUT;
654 #undef MAX_TRIES
655 }
656
657 static unsigned int p54_flush_count(struct p54_common *priv)
658 {
659 unsigned int total = 0, i;
660
661 BUILD_BUG_ON(P54_QUEUE_NUM > ARRAY_SIZE(priv->tx_stats));
662
663 /*
664 * Because the firmware has the sole control over any frames
665 * in the P54_QUEUE_BEACON or P54_QUEUE_SCAN queues, they
666 * don't really count as pending or active.
667 */
668 for (i = P54_QUEUE_MGMT; i < P54_QUEUE_NUM; i++)
669 total += priv->tx_stats[i].len;
670 return total;
671 }
672
673 static void p54_flush(struct ieee80211_hw *dev, u32 queues, bool drop)
674 {
675 struct p54_common *priv = dev->priv;
676 unsigned int total, i;
677
678 /*
679 * Currently, it wouldn't really matter if we wait for one second
680 * or 15 minutes. But once someone gets around and completes the
681 * TODOs [ancel stuck frames / reset device] in p54_work, it will
682 * suddenly make sense to wait that long.
683 */
684 i = P54_STATISTICS_UPDATE * 2 / 20;
685
686 /*
687 * In this case no locking is required because as we speak the
688 * queues have already been stopped and no new frames can sneak
689 * up from behind.
690 */
691 while ((total = p54_flush_count(priv) && i--)) {
692 /* waste time */
693 msleep(20);
694 }
695
696 WARN(total, "tx flush timeout, unresponsive firmware");
697 }
698
699 static void p54_set_coverage_class(struct ieee80211_hw *dev, u8 coverage_class)
700 {
701 struct p54_common *priv = dev->priv;
702
703 mutex_lock(&priv->conf_mutex);
704 /* support all coverage class values as in 802.11-2007 Table 7-27 */
705 priv->coverage_class = clamp_t(u8, coverage_class, 0, 31);
706 p54_set_edcf(priv);
707 mutex_unlock(&priv->conf_mutex);
708 }
709
710 static const struct ieee80211_ops p54_ops = {
711 .tx = p54_tx_80211,
712 .start = p54_start,
713 .stop = p54_stop,
714 .add_interface = p54_add_interface,
715 .remove_interface = p54_remove_interface,
716 .set_tim = p54_set_tim,
717 .sta_notify = p54_sta_notify,
718 .sta_add = p54_sta_add_remove,
719 .sta_remove = p54_sta_add_remove,
720 .set_key = p54_set_key,
721 .config = p54_config,
722 .flush = p54_flush,
723 .bss_info_changed = p54_bss_info_changed,
724 .prepare_multicast = p54_prepare_multicast,
725 .configure_filter = p54_configure_filter,
726 .conf_tx = p54_conf_tx,
727 .get_stats = p54_get_stats,
728 .get_survey = p54_get_survey,
729 .set_coverage_class = p54_set_coverage_class,
730 };
731
732 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
733 {
734 struct ieee80211_hw *dev;
735 struct p54_common *priv;
736
737 dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
738 if (!dev)
739 return NULL;
740
741 priv = dev->priv;
742 priv->hw = dev;
743 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
744 priv->basic_rate_mask = 0x15f;
745 spin_lock_init(&priv->tx_stats_lock);
746 skb_queue_head_init(&priv->tx_queue);
747 skb_queue_head_init(&priv->tx_pending);
748 dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
749 IEEE80211_HW_SIGNAL_DBM |
750 IEEE80211_HW_SUPPORTS_PS |
751 IEEE80211_HW_PS_NULLFUNC_STACK |
752 IEEE80211_HW_MFP_CAPABLE |
753 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
754
755 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
756 BIT(NL80211_IFTYPE_ADHOC) |
757 BIT(NL80211_IFTYPE_AP) |
758 BIT(NL80211_IFTYPE_MESH_POINT);
759
760 dev->channel_change_time = 1000; /* TODO: find actual value */
761 priv->beacon_req_id = cpu_to_le32(0);
762 priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
763 priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
764 priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
765 priv->tx_stats[P54_QUEUE_CAB].limit = 3;
766 priv->tx_stats[P54_QUEUE_DATA].limit = 5;
767 dev->queues = 1;
768 priv->noise = -94;
769 /*
770 * We support at most 8 tries no matter which rate they're at,
771 * we cannot support max_rates * max_rate_tries as we set it
772 * here, but setting it correctly to 4/2 or so would limit us
773 * artificially if the RC algorithm wants just two rates, so
774 * let's say 4/7, we'll redistribute it at TX time, see the
775 * comments there.
776 */
777 dev->max_rates = 4;
778 dev->max_rate_tries = 7;
779 dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
780 sizeof(struct p54_tx_data);
781
782 /*
783 * For now, disable PS by default because it affects
784 * link stability significantly.
785 */
786 dev->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
787
788 mutex_init(&priv->conf_mutex);
789 mutex_init(&priv->eeprom_mutex);
790 init_completion(&priv->stat_comp);
791 init_completion(&priv->eeprom_comp);
792 init_completion(&priv->beacon_comp);
793 INIT_DELAYED_WORK(&priv->work, p54_work);
794
795 memset(&priv->mc_maclist[0], ~0, ETH_ALEN);
796 priv->curchan = NULL;
797 p54_reset_stats(priv);
798 return dev;
799 }
800 EXPORT_SYMBOL_GPL(p54_init_common);
801
802 int p54_register_common(struct ieee80211_hw *dev, struct device *pdev)
803 {
804 struct p54_common __maybe_unused *priv = dev->priv;
805 int err;
806
807 err = ieee80211_register_hw(dev);
808 if (err) {
809 dev_err(pdev, "Cannot register device (%d).\n", err);
810 return err;
811 }
812 priv->registered = true;
813
814 #ifdef CONFIG_P54_LEDS
815 err = p54_init_leds(priv);
816 if (err) {
817 p54_unregister_common(dev);
818 return err;
819 }
820 #endif /* CONFIG_P54_LEDS */
821
822 dev_info(pdev, "is registered as '%s'\n", wiphy_name(dev->wiphy));
823 return 0;
824 }
825 EXPORT_SYMBOL_GPL(p54_register_common);
826
827 void p54_free_common(struct ieee80211_hw *dev)
828 {
829 struct p54_common *priv = dev->priv;
830 unsigned int i;
831
832 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
833 kfree(priv->band_table[i]);
834
835 kfree(priv->iq_autocal);
836 kfree(priv->output_limit);
837 kfree(priv->curve_data);
838 kfree(priv->rssi_db);
839 kfree(priv->used_rxkeys);
840 kfree(priv->survey);
841 priv->iq_autocal = NULL;
842 priv->output_limit = NULL;
843 priv->curve_data = NULL;
844 priv->rssi_db = NULL;
845 priv->used_rxkeys = NULL;
846 priv->survey = NULL;
847 ieee80211_free_hw(dev);
848 }
849 EXPORT_SYMBOL_GPL(p54_free_common);
850
851 void p54_unregister_common(struct ieee80211_hw *dev)
852 {
853 struct p54_common *priv = dev->priv;
854
855 #ifdef CONFIG_P54_LEDS
856 p54_unregister_leds(priv);
857 #endif /* CONFIG_P54_LEDS */
858
859 if (priv->registered) {
860 priv->registered = false;
861 ieee80211_unregister_hw(dev);
862 }
863
864 mutex_destroy(&priv->conf_mutex);
865 mutex_destroy(&priv->eeprom_mutex);
866 }
867 EXPORT_SYMBOL_GPL(p54_unregister_common);
Linux with added FPC-III support