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Christian Lamparter0ac0d6c2009-06-23 10:38:49 -05001/*
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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090020#include <linux/slab.h>
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -050021#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
29static int modparam_nohwcrypt;
30module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
31MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
32MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
33MODULE_DESCRIPTION("Softmac Prism54 common code");
34MODULE_LICENSE("GPL");
35MODULE_ALIAS("prism54common");
36
Johannes Berg17f6f052010-02-19 19:06:54 +010037static 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
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -050053static 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;
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -050058
Johannes Berg17f6f052010-02-19 19:06:54 +010059 switch (notify_cmd) {
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -050060 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
69static 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
Christian Lampartere0f114e2009-07-07 19:08:07 +020077u8 *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
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -050099static 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 */
Christian Lampartere0f114e2009-07-07 19:08:07 +0200106 u8 *tim;
107 u8 dtim_len;
108 u8 dtim_period;
109 u8 *next;
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500110
Christian Lampartere0f114e2009-07-07 19:08:07 +0200111 tim = p54_find_ie(skb, WLAN_EID_TIM);
112 if (!tim)
113 return 0;
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500114
Christian Lampartere0f114e2009-07-07 19:08:07 +0200115 dtim_len = tim[1];
116 dtim_period = tim[3];
117 next = tim + 2 + dtim_len;
118
119 if (dtim_len < 3)
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500120 return -EINVAL;
121
Christian Lampartere0f114e2009-07-07 19:08:07 +0200122 memmove(tim, next, skb_tail_pointer(skb) - next);
123 tim = skb_tail_pointer(skb) - (dtim_len + 2);
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500124
Christian Lampartere0f114e2009-07-07 19:08:07 +0200125 /* 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;
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500131
Christian Lampartere0f114e2009-07-07 19:08:07 +0200132 if (dtim_len > 3)
133 skb_trim(skb, skb->len - (dtim_len - 3));
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500134
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500135 return 0;
136}
137
138static int p54_beacon_update(struct p54_common *priv,
139 struct ieee80211_vif *vif)
140{
141 struct sk_buff *beacon;
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500142 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
Christian Lamparter46df10a2009-07-16 20:03:47 +0200151 /*
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 */
Johannes Berg7bb45682011-02-24 14:42:06 +0100160 p54_tx_80211(priv->hw, beacon);
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500161 priv->tsf_high32 = 0;
162 priv->tsf_low32 = 0;
163
164 return 0;
165}
166
167static 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
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -0400192 ieee80211_queue_delayed_work(dev, &priv->work, 0);
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500193
194 priv->softled_state = 0;
195 err = p54_set_leds(priv);
196
197out:
198 mutex_unlock(&priv->conf_mutex);
199 return err;
200}
201
202static void p54_stop(struct ieee80211_hw *dev)
203{
204 struct p54_common *priv = dev->priv;
205 int i;
206
207 mutex_lock(&priv->conf_mutex);
208 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
209 priv->softled_state = 0;
210 p54_set_leds(priv);
211
212 cancel_delayed_work_sync(&priv->work);
213
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
227static int p54_add_interface(struct ieee80211_hw *dev,
Johannes Berg1ed32e42009-12-23 13:15:45 +0100228 struct ieee80211_vif *vif)
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500229{
230 struct p54_common *priv = dev->priv;
231
232 mutex_lock(&priv->conf_mutex);
233 if (priv->mode != NL80211_IFTYPE_MONITOR) {
234 mutex_unlock(&priv->conf_mutex);
235 return -EOPNOTSUPP;
236 }
237
Johannes Berg1ed32e42009-12-23 13:15:45 +0100238 priv->vif = vif;
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500239
Johannes Berg1ed32e42009-12-23 13:15:45 +0100240 switch (vif->type) {
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500241 case NL80211_IFTYPE_STATION:
242 case NL80211_IFTYPE_ADHOC:
243 case NL80211_IFTYPE_AP:
244 case NL80211_IFTYPE_MESH_POINT:
Johannes Berg1ed32e42009-12-23 13:15:45 +0100245 priv->mode = vif->type;
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500246 break;
247 default:
248 mutex_unlock(&priv->conf_mutex);
249 return -EOPNOTSUPP;
250 }
251
Johannes Berg1ed32e42009-12-23 13:15:45 +0100252 memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500253 p54_setup_mac(priv);
254 mutex_unlock(&priv->conf_mutex);
255 return 0;
256}
257
258static void p54_remove_interface(struct ieee80211_hw *dev,
Johannes Berg1ed32e42009-12-23 13:15:45 +0100259 struct ieee80211_vif *vif)
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500260{
261 struct p54_common *priv = dev->priv;
262
263 mutex_lock(&priv->conf_mutex);
264 priv->vif = NULL;
Christian Lamparter46df10a2009-07-16 20:03:47 +0200265
266 /*
267 * LMAC API 3.2.2 states that any active beacon template must be
268 * canceled by the driver before attempting a mode transition.
269 */
270 if (le32_to_cpu(priv->beacon_req_id) != 0) {
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500271 p54_tx_cancel(priv, priv->beacon_req_id);
Christian Lamparter46df10a2009-07-16 20:03:47 +0200272 wait_for_completion_interruptible_timeout(&priv->beacon_comp, HZ);
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500273 }
274 priv->mode = NL80211_IFTYPE_MONITOR;
275 memset(priv->mac_addr, 0, ETH_ALEN);
276 memset(priv->bssid, 0, ETH_ALEN);
277 p54_setup_mac(priv);
278 mutex_unlock(&priv->conf_mutex);
279}
280
281static int p54_config(struct ieee80211_hw *dev, u32 changed)
282{
283 int ret = 0;
284 struct p54_common *priv = dev->priv;
285 struct ieee80211_conf *conf = &dev->conf;
286
287 mutex_lock(&priv->conf_mutex);
288 if (changed & IEEE80211_CONF_CHANGE_POWER)
289 priv->output_power = conf->power_level << 2;
290 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
291 ret = p54_scan(priv, P54_SCAN_EXIT, 0);
292 if (ret)
293 goto out;
294 }
295 if (changed & IEEE80211_CONF_CHANGE_PS) {
296 ret = p54_set_ps(priv);
297 if (ret)
298 goto out;
299 }
Christian Lamparter6208f8b2009-08-07 19:39:05 +0200300 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
301 ret = p54_setup_mac(priv);
302 if (ret)
303 goto out;
304 }
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500305
306out:
307 mutex_unlock(&priv->conf_mutex);
308 return ret;
309}
310
311static void p54_configure_filter(struct ieee80211_hw *dev,
312 unsigned int changed_flags,
313 unsigned int *total_flags,
Johannes Berg3ac64be2009-08-17 16:16:53 +0200314 u64 multicast)
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500315{
316 struct p54_common *priv = dev->priv;
317
318 *total_flags &= FIF_PROMISC_IN_BSS |
319 FIF_OTHER_BSS;
320
321 priv->filter_flags = *total_flags;
322
323 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS))
324 p54_setup_mac(priv);
325}
326
327static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
328 const struct ieee80211_tx_queue_params *params)
329{
330 struct p54_common *priv = dev->priv;
331 int ret;
332
333 mutex_lock(&priv->conf_mutex);
Christian Lamparter718126a2009-08-07 19:38:51 +0200334 if (queue < dev->queues) {
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500335 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
336 params->cw_min, params->cw_max, params->txop);
337 ret = p54_set_edcf(priv);
338 } else
339 ret = -EINVAL;
340 mutex_unlock(&priv->conf_mutex);
341 return ret;
342}
343
344static void p54_work(struct work_struct *work)
345{
346 struct p54_common *priv = container_of(work, struct p54_common,
347 work.work);
348
349 if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
350 return ;
351
352 /*
353 * TODO: walk through tx_queue and do the following tasks
354 * 1. initiate bursts.
355 * 2. cancel stuck frames / reset the device if necessary.
356 */
357
358 p54_fetch_statistics(priv);
359}
360
361static int p54_get_stats(struct ieee80211_hw *dev,
362 struct ieee80211_low_level_stats *stats)
363{
364 struct p54_common *priv = dev->priv;
365
366 memcpy(stats, &priv->stats, sizeof(*stats));
367 return 0;
368}
369
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500370static void p54_bss_info_changed(struct ieee80211_hw *dev,
371 struct ieee80211_vif *vif,
372 struct ieee80211_bss_conf *info,
373 u32 changed)
374{
375 struct p54_common *priv = dev->priv;
376
377 mutex_lock(&priv->conf_mutex);
378 if (changed & BSS_CHANGED_BSSID) {
379 memcpy(priv->bssid, info->bssid, ETH_ALEN);
380 p54_setup_mac(priv);
381 }
382
383 if (changed & BSS_CHANGED_BEACON) {
384 p54_scan(priv, P54_SCAN_EXIT, 0);
385 p54_setup_mac(priv);
386 p54_beacon_update(priv, vif);
387 p54_set_edcf(priv);
388 }
389
390 if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_BEACON)) {
391 priv->use_short_slot = info->use_short_slot;
392 p54_set_edcf(priv);
393 }
394 if (changed & BSS_CHANGED_BASIC_RATES) {
395 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
396 priv->basic_rate_mask = (info->basic_rates << 4);
397 else
398 priv->basic_rate_mask = info->basic_rates;
399 p54_setup_mac(priv);
400 if (priv->fw_var >= 0x500)
401 p54_scan(priv, P54_SCAN_EXIT, 0);
402 }
403 if (changed & BSS_CHANGED_ASSOC) {
404 if (info->assoc) {
405 priv->aid = info->aid;
406 priv->wakeup_timer = info->beacon_int *
407 info->dtim_period * 5;
408 p54_setup_mac(priv);
Christian Lampartere0f114e2009-07-07 19:08:07 +0200409 } else {
410 priv->wakeup_timer = 500;
411 priv->aid = 0;
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500412 }
413 }
414
415 mutex_unlock(&priv->conf_mutex);
416}
417
418static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
419 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
420 struct ieee80211_key_conf *key)
421{
422 struct p54_common *priv = dev->priv;
423 int slot, ret = 0;
424 u8 algo = 0;
425 u8 *addr = NULL;
426
427 if (modparam_nohwcrypt)
428 return -EOPNOTSUPP;
429
430 mutex_lock(&priv->conf_mutex);
431 if (cmd == SET_KEY) {
Johannes Berg97359d12010-08-10 09:46:38 +0200432 switch (key->cipher) {
433 case WLAN_CIPHER_SUITE_TKIP:
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500434 if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
435 BR_DESC_PRIV_CAP_TKIP))) {
436 ret = -EOPNOTSUPP;
437 goto out_unlock;
438 }
439 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
440 algo = P54_CRYPTO_TKIPMICHAEL;
441 break;
Johannes Berg97359d12010-08-10 09:46:38 +0200442 case WLAN_CIPHER_SUITE_WEP40:
443 case WLAN_CIPHER_SUITE_WEP104:
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500444 if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP)) {
445 ret = -EOPNOTSUPP;
446 goto out_unlock;
447 }
448 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
449 algo = P54_CRYPTO_WEP;
450 break;
Johannes Berg97359d12010-08-10 09:46:38 +0200451 case WLAN_CIPHER_SUITE_CCMP:
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500452 if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)) {
453 ret = -EOPNOTSUPP;
454 goto out_unlock;
455 }
456 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
457 algo = P54_CRYPTO_AESCCMP;
458 break;
459 default:
460 ret = -EOPNOTSUPP;
461 goto out_unlock;
462 }
463 slot = bitmap_find_free_region(priv->used_rxkeys,
464 priv->rx_keycache_size, 0);
465
466 if (slot < 0) {
467 /*
468 * The device supports the choosen algorithm, but the
469 * firmware does not provide enough key slots to store
470 * all of them.
471 * But encryption offload for outgoing frames is always
472 * possible, so we just pretend that the upload was
473 * successful and do the decryption in software.
474 */
475
476 /* mark the key as invalid. */
477 key->hw_key_idx = 0xff;
478 goto out_unlock;
479 }
480 } else {
481 slot = key->hw_key_idx;
482
483 if (slot == 0xff) {
484 /* This key was not uploaded into the rx key cache. */
485
486 goto out_unlock;
487 }
488
489 bitmap_release_region(priv->used_rxkeys, slot, 0);
490 algo = 0;
491 }
492
493 if (sta)
494 addr = sta->addr;
495
496 ret = p54_upload_key(priv, algo, slot, key->keyidx,
497 key->keylen, addr, key->key);
498 if (ret) {
499 bitmap_release_region(priv->used_rxkeys, slot, 0);
500 ret = -EOPNOTSUPP;
501 goto out_unlock;
502 }
503
504 key->hw_key_idx = slot;
505
506out_unlock:
507 mutex_unlock(&priv->conf_mutex);
508 return ret;
509}
510
John W. Linville1b2fb7d2010-05-03 16:06:47 -0400511static int p54_get_survey(struct ieee80211_hw *dev, int idx,
512 struct survey_info *survey)
513{
514 struct p54_common *priv = dev->priv;
515 struct ieee80211_conf *conf = &dev->conf;
516
517 if (idx != 0)
518 return -ENOENT;
519
520 survey->channel = conf->channel;
521 survey->filled = SURVEY_INFO_NOISE_DBM;
522 survey->noise = clamp_t(s8, priv->noise, -128, 127);
523
524 return 0;
525}
526
Christian Lamparter0d4171e2011-02-16 19:43:06 +0100527static unsigned int p54_flush_count(struct p54_common *priv)
528{
529 unsigned int total = 0, i;
530
531 BUILD_BUG_ON(P54_QUEUE_NUM > ARRAY_SIZE(priv->tx_stats));
532
533 /*
534 * Because the firmware has the sole control over any frames
535 * in the P54_QUEUE_BEACON or P54_QUEUE_SCAN queues, they
536 * don't really count as pending or active.
537 */
538 for (i = P54_QUEUE_MGMT; i < P54_QUEUE_NUM; i++)
539 total += priv->tx_stats[i].len;
540 return total;
541}
542
543static void p54_flush(struct ieee80211_hw *dev, bool drop)
544{
545 struct p54_common *priv = dev->priv;
546 unsigned int total, i;
547
548 /*
549 * Currently, it wouldn't really matter if we wait for one second
550 * or 15 minutes. But once someone gets around and completes the
551 * TODOs [ancel stuck frames / reset device] in p54_work, it will
552 * suddenly make sense to wait that long.
553 */
554 i = P54_STATISTICS_UPDATE * 2 / 20;
555
556 /*
557 * In this case no locking is required because as we speak the
558 * queues have already been stopped and no new frames can sneak
559 * up from behind.
560 */
561 while ((total = p54_flush_count(priv) && i--)) {
562 /* waste time */
563 msleep(20);
564 }
565
566 WARN(total, "tx flush timeout, unresponsive firmware");
567}
568
Christian Lamparter3083e832011-02-24 14:12:20 +0100569static void p54_set_coverage_class(struct ieee80211_hw *dev, u8 coverage_class)
570{
571 struct p54_common *priv = dev->priv;
572
573 mutex_lock(&priv->conf_mutex);
574 /* support all coverage class values as in 802.11-2007 Table 7-27 */
575 priv->coverage_class = clamp_t(u8, coverage_class, 0, 31);
576 p54_set_edcf(priv);
577 mutex_unlock(&priv->conf_mutex);
578}
579
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500580static const struct ieee80211_ops p54_ops = {
581 .tx = p54_tx_80211,
582 .start = p54_start,
583 .stop = p54_stop,
584 .add_interface = p54_add_interface,
585 .remove_interface = p54_remove_interface,
586 .set_tim = p54_set_tim,
587 .sta_notify = p54_sta_notify,
Johannes Berg17f6f052010-02-19 19:06:54 +0100588 .sta_add = p54_sta_add_remove,
589 .sta_remove = p54_sta_add_remove,
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500590 .set_key = p54_set_key,
591 .config = p54_config,
Christian Lamparter0d4171e2011-02-16 19:43:06 +0100592 .flush = p54_flush,
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500593 .bss_info_changed = p54_bss_info_changed,
594 .configure_filter = p54_configure_filter,
595 .conf_tx = p54_conf_tx,
596 .get_stats = p54_get_stats,
John W. Linville1b2fb7d2010-05-03 16:06:47 -0400597 .get_survey = p54_get_survey,
Christian Lamparter3083e832011-02-24 14:12:20 +0100598 .set_coverage_class = p54_set_coverage_class,
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500599};
600
601struct ieee80211_hw *p54_init_common(size_t priv_data_len)
602{
603 struct ieee80211_hw *dev;
604 struct p54_common *priv;
605
606 dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
607 if (!dev)
608 return NULL;
609
610 priv = dev->priv;
611 priv->hw = dev;
612 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
613 priv->basic_rate_mask = 0x15f;
614 spin_lock_init(&priv->tx_stats_lock);
615 skb_queue_head_init(&priv->tx_queue);
616 skb_queue_head_init(&priv->tx_pending);
617 dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
618 IEEE80211_HW_SIGNAL_DBM |
Christian Lampartere0f114e2009-07-07 19:08:07 +0200619 IEEE80211_HW_SUPPORTS_PS |
620 IEEE80211_HW_PS_NULLFUNC_STACK |
621 IEEE80211_HW_BEACON_FILTER |
John W. Linvillef5c044e2010-04-30 15:37:00 -0400622 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500623
624 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
625 BIT(NL80211_IFTYPE_ADHOC) |
626 BIT(NL80211_IFTYPE_AP) |
627 BIT(NL80211_IFTYPE_MESH_POINT);
628
629 dev->channel_change_time = 1000; /* TODO: find actual value */
Christian Lamparter46df10a2009-07-16 20:03:47 +0200630 priv->beacon_req_id = cpu_to_le32(0);
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500631 priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
632 priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
633 priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
634 priv->tx_stats[P54_QUEUE_CAB].limit = 3;
635 priv->tx_stats[P54_QUEUE_DATA].limit = 5;
636 dev->queues = 1;
637 priv->noise = -94;
638 /*
639 * We support at most 8 tries no matter which rate they're at,
640 * we cannot support max_rates * max_rate_tries as we set it
641 * here, but setting it correctly to 4/2 or so would limit us
642 * artificially if the RC algorithm wants just two rates, so
643 * let's say 4/7, we'll redistribute it at TX time, see the
644 * comments there.
645 */
646 dev->max_rates = 4;
647 dev->max_rate_tries = 7;
648 dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
649 sizeof(struct p54_tx_data);
650
Christian Lamparterc46aaba2009-08-14 13:23:05 +0200651 /*
652 * For now, disable PS by default because it affects
653 * link stability significantly.
654 */
Johannes Berg5be83de2009-11-19 00:56:28 +0100655 dev->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
Christian Lamparterc46aaba2009-08-14 13:23:05 +0200656
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500657 mutex_init(&priv->conf_mutex);
658 mutex_init(&priv->eeprom_mutex);
659 init_completion(&priv->eeprom_comp);
Christian Lamparter46df10a2009-07-16 20:03:47 +0200660 init_completion(&priv->beacon_comp);
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500661 INIT_DELAYED_WORK(&priv->work, p54_work);
662
663 return dev;
664}
665EXPORT_SYMBOL_GPL(p54_init_common);
666
667int p54_register_common(struct ieee80211_hw *dev, struct device *pdev)
668{
Larry Fingerfe0b7c62011-02-15 09:37:06 -0600669 struct p54_common __maybe_unused *priv = dev->priv;
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500670 int err;
671
672 err = ieee80211_register_hw(dev);
673 if (err) {
674 dev_err(pdev, "Cannot register device (%d).\n", err);
675 return err;
676 }
677
678#ifdef CONFIG_P54_LEDS
679 err = p54_init_leds(priv);
680 if (err)
681 return err;
682#endif /* CONFIG_P54_LEDS */
683
684 dev_info(pdev, "is registered as '%s'\n", wiphy_name(dev->wiphy));
685 return 0;
686}
687EXPORT_SYMBOL_GPL(p54_register_common);
688
689void p54_free_common(struct ieee80211_hw *dev)
690{
691 struct p54_common *priv = dev->priv;
Christian Lamparter1a9b6672009-07-11 01:22:26 +0200692 unsigned int i;
693
694 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
695 kfree(priv->band_table[i]);
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500696
697 kfree(priv->iq_autocal);
698 kfree(priv->output_limit);
699 kfree(priv->curve_data);
Christian Lamparter7a047f42011-02-12 22:32:49 +0100700 kfree(priv->rssi_db);
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500701 kfree(priv->used_rxkeys);
702 priv->iq_autocal = NULL;
703 priv->output_limit = NULL;
704 priv->curve_data = NULL;
Christian Lamparter7a047f42011-02-12 22:32:49 +0100705 priv->rssi_db = NULL;
Christian Lamparter0ac0d6c2009-06-23 10:38:49 -0500706 priv->used_rxkeys = NULL;
707 ieee80211_free_hw(dev);
708}
709EXPORT_SYMBOL_GPL(p54_free_common);
710
711void p54_unregister_common(struct ieee80211_hw *dev)
712{
713 struct p54_common *priv = dev->priv;
714
715#ifdef CONFIG_P54_LEDS
716 p54_unregister_leds(priv);
717#endif /* CONFIG_P54_LEDS */
718
719 ieee80211_unregister_hw(dev);
720 mutex_destroy(&priv->conf_mutex);
721 mutex_destroy(&priv->eeprom_mutex);
722}
723EXPORT_SYMBOL_GPL(p54_unregister_common);