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14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/slab.h>
17#include <linux/log2.h>
18#include <linux/of.h>
19#include <linux/of_net.h>
20
21#include "rt2x00.h"
22#include "rt2x00lib.h"
23
24
25
26
27u32 rt2x00lib_get_bssidx(struct rt2x00_dev *rt2x00dev,
28 struct ieee80211_vif *vif)
29{
30
31
32
33
34 if (rt2x00dev->intf_sta_count)
35 return 0;
36 return vif->addr[5] & (rt2x00dev->ops->max_ap_intf - 1);
37}
38EXPORT_SYMBOL_GPL(rt2x00lib_get_bssidx);
39
40
41
42
43int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev)
44{
45 int status;
46
47
48
49
50
51 if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
52 return 0;
53
54
55
56
57 rt2x00queue_init_queues(rt2x00dev);
58
59
60
61
62 status =
63 rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_ON);
64 if (status)
65 return status;
66
67 rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_ON);
68
69 rt2x00leds_led_radio(rt2x00dev, true);
70 rt2x00led_led_activity(rt2x00dev, true);
71
72 set_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags);
73
74
75
76
77 rt2x00queue_start_queues(rt2x00dev);
78 rt2x00link_start_tuner(rt2x00dev);
79
80
81
82
83 rt2x00link_start_watchdog(rt2x00dev);
84
85 return 0;
86}
87
88void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev)
89{
90 if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
91 return;
92
93
94
95
96 rt2x00link_stop_watchdog(rt2x00dev);
97
98
99
100
101 rt2x00link_stop_tuner(rt2x00dev);
102 rt2x00queue_stop_queues(rt2x00dev);
103 rt2x00queue_flush_queues(rt2x00dev, true);
104
105
106
107
108 rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF);
109 rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF);
110 rt2x00led_led_activity(rt2x00dev, false);
111 rt2x00leds_led_radio(rt2x00dev, false);
112}
113
114static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac,
115 struct ieee80211_vif *vif)
116{
117 struct rt2x00_dev *rt2x00dev = data;
118 struct rt2x00_intf *intf = vif_to_intf(vif);
119
120
121
122
123
124
125
126 if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
127 return;
128
129 if (test_and_clear_bit(DELAYED_UPDATE_BEACON, &intf->delayed_flags)) {
130 mutex_lock(&intf->beacon_skb_mutex);
131 rt2x00queue_update_beacon(rt2x00dev, vif);
132 mutex_unlock(&intf->beacon_skb_mutex);
133 }
134}
135
136static void rt2x00lib_intf_scheduled(struct work_struct *work)
137{
138 struct rt2x00_dev *rt2x00dev =
139 container_of(work, struct rt2x00_dev, intf_work);
140
141
142
143
144
145 ieee80211_iterate_active_interfaces(rt2x00dev->hw,
146 IEEE80211_IFACE_ITER_RESUME_ALL,
147 rt2x00lib_intf_scheduled_iter,
148 rt2x00dev);
149}
150
151static void rt2x00lib_autowakeup(struct work_struct *work)
152{
153 struct rt2x00_dev *rt2x00dev =
154 container_of(work, struct rt2x00_dev, autowakeup_work.work);
155
156 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
157 return;
158
159 if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
160 rt2x00_err(rt2x00dev, "Device failed to wakeup\n");
161 clear_bit(CONFIG_POWERSAVING, &rt2x00dev->flags);
162}
163
164
165
166
167static void rt2x00lib_bc_buffer_iter(void *data, u8 *mac,
168 struct ieee80211_vif *vif)
169{
170 struct ieee80211_tx_control control = {};
171 struct rt2x00_dev *rt2x00dev = data;
172 struct sk_buff *skb;
173
174
175
176
177 if (vif->type != NL80211_IFTYPE_AP)
178 return;
179
180
181
182
183 skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif);
184 while (skb) {
185 rt2x00mac_tx(rt2x00dev->hw, &control, skb);
186 skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif);
187 }
188}
189
190static void rt2x00lib_beaconupdate_iter(void *data, u8 *mac,
191 struct ieee80211_vif *vif)
192{
193 struct rt2x00_dev *rt2x00dev = data;
194
195 if (vif->type != NL80211_IFTYPE_AP &&
196 vif->type != NL80211_IFTYPE_ADHOC &&
197 vif->type != NL80211_IFTYPE_MESH_POINT)
198 return;
199
200
201
202
203
204
205 WARN_ON(rt2x00_is_usb(rt2x00dev));
206 rt2x00queue_update_beacon(rt2x00dev, vif);
207}
208
209void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev)
210{
211 if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
212 return;
213
214
215 ieee80211_iterate_active_interfaces_atomic(
216 rt2x00dev->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
217 rt2x00lib_bc_buffer_iter, rt2x00dev);
218
219
220
221
222
223 if (rt2x00_has_cap_pre_tbtt_interrupt(rt2x00dev))
224 return;
225
226
227 ieee80211_iterate_active_interfaces_atomic(
228 rt2x00dev->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
229 rt2x00lib_beaconupdate_iter, rt2x00dev);
230}
231EXPORT_SYMBOL_GPL(rt2x00lib_beacondone);
232
233void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev)
234{
235 if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
236 return;
237
238
239 ieee80211_iterate_active_interfaces_atomic(
240 rt2x00dev->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
241 rt2x00lib_beaconupdate_iter, rt2x00dev);
242}
243EXPORT_SYMBOL_GPL(rt2x00lib_pretbtt);
244
245void rt2x00lib_dmastart(struct queue_entry *entry)
246{
247 set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
248 rt2x00queue_index_inc(entry, Q_INDEX);
249}
250EXPORT_SYMBOL_GPL(rt2x00lib_dmastart);
251
252void rt2x00lib_dmadone(struct queue_entry *entry)
253{
254 set_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags);
255 clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
256 rt2x00queue_index_inc(entry, Q_INDEX_DMA_DONE);
257}
258EXPORT_SYMBOL_GPL(rt2x00lib_dmadone);
259
260static inline int rt2x00lib_txdone_bar_status(struct queue_entry *entry)
261{
262 struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
263 struct ieee80211_bar *bar = (void *) entry->skb->data;
264 struct rt2x00_bar_list_entry *bar_entry;
265 int ret;
266
267 if (likely(!ieee80211_is_back_req(bar->frame_control)))
268 return 0;
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283 ret = 0;
284 rcu_read_lock();
285 list_for_each_entry_rcu(bar_entry, &rt2x00dev->bar_list, list) {
286 if (bar_entry->entry != entry)
287 continue;
288
289 spin_lock_bh(&rt2x00dev->bar_list_lock);
290
291 ret = bar_entry->block_acked;
292
293 list_del_rcu(&bar_entry->list);
294 spin_unlock_bh(&rt2x00dev->bar_list_lock);
295 kfree_rcu(bar_entry, head);
296
297 break;
298 }
299 rcu_read_unlock();
300
301 return ret;
302}
303
304static void rt2x00lib_fill_tx_status(struct rt2x00_dev *rt2x00dev,
305 struct ieee80211_tx_info *tx_info,
306 struct skb_frame_desc *skbdesc,
307 struct txdone_entry_desc *txdesc,
308 bool success)
309{
310 u8 rate_idx, rate_flags, retry_rates;
311 int i;
312
313 rate_idx = skbdesc->tx_rate_idx;
314 rate_flags = skbdesc->tx_rate_flags;
315 retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ?
316 (txdesc->retry + 1) : 1;
317
318
319
320
321 memset(&tx_info->status, 0, sizeof(tx_info->status));
322 tx_info->status.ack_signal = 0;
323
324
325
326
327
328
329
330 for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) {
331 tx_info->status.rates[i].idx = rate_idx - i;
332 tx_info->status.rates[i].flags = rate_flags;
333
334 if (rate_idx - i == 0) {
335
336
337
338
339 tx_info->status.rates[i].count = retry_rates - i;
340 i++;
341 break;
342 }
343 tx_info->status.rates[i].count = 1;
344 }
345 if (i < (IEEE80211_TX_MAX_RATES - 1))
346 tx_info->status.rates[i].idx = -1;
347
348 if (test_bit(TXDONE_NO_ACK_REQ, &txdesc->flags))
349 tx_info->flags |= IEEE80211_TX_CTL_NO_ACK;
350
351 if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) {
352 if (success)
353 tx_info->flags |= IEEE80211_TX_STAT_ACK;
354 else
355 rt2x00dev->low_level_stats.dot11ACKFailureCount++;
356 }
357
358
359
360
361
362
363
364
365
366
367 if (test_bit(TXDONE_AMPDU, &txdesc->flags) ||
368 tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
369 tx_info->flags |= IEEE80211_TX_STAT_AMPDU |
370 IEEE80211_TX_CTL_AMPDU;
371 tx_info->status.ampdu_len = 1;
372 tx_info->status.ampdu_ack_len = success ? 1 : 0;
373 }
374
375 if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
376 if (success)
377 rt2x00dev->low_level_stats.dot11RTSSuccessCount++;
378 else
379 rt2x00dev->low_level_stats.dot11RTSFailureCount++;
380 }
381}
382
383static void rt2x00lib_clear_entry(struct rt2x00_dev *rt2x00dev,
384 struct queue_entry *entry)
385{
386
387
388
389 entry->skb = NULL;
390 entry->flags = 0;
391
392 rt2x00dev->ops->lib->clear_entry(entry);
393
394 rt2x00queue_index_inc(entry, Q_INDEX_DONE);
395
396
397
398
399
400
401
402
403 spin_lock_bh(&entry->queue->tx_lock);
404 if (!rt2x00queue_threshold(entry->queue))
405 rt2x00queue_unpause_queue(entry->queue);
406 spin_unlock_bh(&entry->queue->tx_lock);
407}
408
409void rt2x00lib_txdone_nomatch(struct queue_entry *entry,
410 struct txdone_entry_desc *txdesc)
411{
412 struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
413 struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
414 struct ieee80211_tx_info txinfo = {};
415 bool success;
416
417
418
419
420 rt2x00queue_unmap_skb(entry);
421
422
423
424
425 skbdesc->flags &= ~SKBDESC_DESC_IN_SKB;
426
427
428
429
430
431 rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry);
432
433
434
435
436
437
438 success =
439 rt2x00lib_txdone_bar_status(entry) ||
440 test_bit(TXDONE_SUCCESS, &txdesc->flags);
441
442 if (!test_bit(TXDONE_UNKNOWN, &txdesc->flags)) {
443
444
445
446 rt2x00dev->link.qual.tx_success += success;
447 rt2x00dev->link.qual.tx_failed += !success;
448
449 rt2x00lib_fill_tx_status(rt2x00dev, &txinfo, skbdesc, txdesc,
450 success);
451 ieee80211_tx_status_noskb(rt2x00dev->hw, skbdesc->sta, &txinfo);
452 }
453
454 dev_kfree_skb_any(entry->skb);
455 rt2x00lib_clear_entry(rt2x00dev, entry);
456}
457EXPORT_SYMBOL_GPL(rt2x00lib_txdone_nomatch);
458
459void rt2x00lib_txdone(struct queue_entry *entry,
460 struct txdone_entry_desc *txdesc)
461{
462 struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
463 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb);
464 struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
465 u8 skbdesc_flags = skbdesc->flags;
466 unsigned int header_length;
467 bool success;
468
469
470
471
472 rt2x00queue_unmap_skb(entry);
473
474
475
476
477 skb_pull(entry->skb, rt2x00dev->extra_tx_headroom);
478
479
480
481
482 skbdesc->flags &= ~SKBDESC_DESC_IN_SKB;
483
484
485
486
487 header_length = ieee80211_get_hdrlen_from_skb(entry->skb);
488
489
490
491
492 if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_L2PAD))
493 rt2x00queue_remove_l2pad(entry->skb, header_length);
494
495
496
497
498
499
500
501 if (rt2x00_has_cap_hw_crypto(rt2x00dev))
502 rt2x00crypto_tx_insert_iv(entry->skb, header_length);
503
504
505
506
507
508 rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry);
509
510
511
512
513
514
515 success =
516 rt2x00lib_txdone_bar_status(entry) ||
517 test_bit(TXDONE_SUCCESS, &txdesc->flags) ||
518 test_bit(TXDONE_UNKNOWN, &txdesc->flags);
519
520
521
522
523 rt2x00dev->link.qual.tx_success += success;
524 rt2x00dev->link.qual.tx_failed += !success;
525
526 rt2x00lib_fill_tx_status(rt2x00dev, tx_info, skbdesc, txdesc, success);
527
528
529
530
531
532
533
534 if (!(skbdesc_flags & SKBDESC_NOT_MAC80211)) {
535 if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_TASKLET_CONTEXT))
536 ieee80211_tx_status(rt2x00dev->hw, entry->skb);
537 else
538 ieee80211_tx_status_ni(rt2x00dev->hw, entry->skb);
539 } else {
540 dev_kfree_skb_any(entry->skb);
541 }
542
543 rt2x00lib_clear_entry(rt2x00dev, entry);
544}
545EXPORT_SYMBOL_GPL(rt2x00lib_txdone);
546
547void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status)
548{
549 struct txdone_entry_desc txdesc;
550
551 txdesc.flags = 0;
552 __set_bit(status, &txdesc.flags);
553 txdesc.retry = 0;
554
555 rt2x00lib_txdone(entry, &txdesc);
556}
557EXPORT_SYMBOL_GPL(rt2x00lib_txdone_noinfo);
558
559static u8 *rt2x00lib_find_ie(u8 *data, unsigned int len, u8 ie)
560{
561 struct ieee80211_mgmt *mgmt = (void *)data;
562 u8 *pos, *end;
563
564 pos = (u8 *)mgmt->u.beacon.variable;
565 end = data + len;
566 while (pos < end) {
567 if (pos + 2 + pos[1] > end)
568 return NULL;
569
570 if (pos[0] == ie)
571 return pos;
572
573 pos += 2 + pos[1];
574 }
575
576 return NULL;
577}
578
579static void rt2x00lib_sleep(struct work_struct *work)
580{
581 struct rt2x00_dev *rt2x00dev =
582 container_of(work, struct rt2x00_dev, sleep_work);
583
584 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
585 return;
586
587
588
589
590
591 if (!test_bit(CONFIG_POWERSAVING, &rt2x00dev->flags))
592 rt2x00lib_config(rt2x00dev, &rt2x00dev->hw->conf,
593 IEEE80211_CONF_CHANGE_PS);
594}
595
596static void rt2x00lib_rxdone_check_ba(struct rt2x00_dev *rt2x00dev,
597 struct sk_buff *skb,
598 struct rxdone_entry_desc *rxdesc)
599{
600 struct rt2x00_bar_list_entry *entry;
601 struct ieee80211_bar *ba = (void *)skb->data;
602
603 if (likely(!ieee80211_is_back(ba->frame_control)))
604 return;
605
606 if (rxdesc->size < sizeof(*ba) + FCS_LEN)
607 return;
608
609 rcu_read_lock();
610 list_for_each_entry_rcu(entry, &rt2x00dev->bar_list, list) {
611
612 if (ba->start_seq_num != entry->start_seq_num)
613 continue;
614
615#define TID_CHECK(a, b) ( \
616 ((a) & cpu_to_le16(IEEE80211_BAR_CTRL_TID_INFO_MASK)) == \
617 ((b) & cpu_to_le16(IEEE80211_BAR_CTRL_TID_INFO_MASK))) \
618
619 if (!TID_CHECK(ba->control, entry->control))
620 continue;
621
622#undef TID_CHECK
623
624 if (!ether_addr_equal_64bits(ba->ra, entry->ta))
625 continue;
626
627 if (!ether_addr_equal_64bits(ba->ta, entry->ra))
628 continue;
629
630
631 spin_lock_bh(&rt2x00dev->bar_list_lock);
632 entry->block_acked = 1;
633 spin_unlock_bh(&rt2x00dev->bar_list_lock);
634 break;
635 }
636 rcu_read_unlock();
637
638}
639
640static void rt2x00lib_rxdone_check_ps(struct rt2x00_dev *rt2x00dev,
641 struct sk_buff *skb,
642 struct rxdone_entry_desc *rxdesc)
643{
644 struct ieee80211_hdr *hdr = (void *) skb->data;
645 struct ieee80211_tim_ie *tim_ie;
646 u8 *tim;
647 u8 tim_len;
648 bool cam;
649
650
651
652
653 if (likely(!ieee80211_is_beacon(hdr->frame_control) ||
654 !(rt2x00dev->hw->conf.flags & IEEE80211_CONF_PS)))
655 return;
656
657
658 if (skb->len <= 40 + FCS_LEN)
659 return;
660
661
662 if (!(rxdesc->dev_flags & RXDONE_MY_BSS) ||
663 !rt2x00dev->aid)
664 return;
665
666 rt2x00dev->last_beacon = jiffies;
667
668 tim = rt2x00lib_find_ie(skb->data, skb->len - FCS_LEN, WLAN_EID_TIM);
669 if (!tim)
670 return;
671
672 if (tim[1] < sizeof(*tim_ie))
673 return;
674
675 tim_len = tim[1];
676 tim_ie = (struct ieee80211_tim_ie *) &tim[2];
677
678
679
680
681 cam = ieee80211_check_tim(tim_ie, tim_len, rt2x00dev->aid);
682
683
684 cam |= (tim_ie->bitmap_ctrl & 0x01);
685
686 if (!cam && !test_bit(CONFIG_POWERSAVING, &rt2x00dev->flags))
687 queue_work(rt2x00dev->workqueue, &rt2x00dev->sleep_work);
688}
689
690static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev,
691 struct rxdone_entry_desc *rxdesc)
692{
693 struct ieee80211_supported_band *sband;
694 const struct rt2x00_rate *rate;
695 unsigned int i;
696 int signal = rxdesc->signal;
697 int type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK);
698
699 switch (rxdesc->rate_mode) {
700 case RATE_MODE_CCK:
701 case RATE_MODE_OFDM:
702
703
704
705
706 if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS)
707 signal = RATE_MCS(rxdesc->rate_mode, signal);
708
709 sband = &rt2x00dev->bands[rt2x00dev->curr_band];
710 for (i = 0; i < sband->n_bitrates; i++) {
711 rate = rt2x00_get_rate(sband->bitrates[i].hw_value);
712 if (((type == RXDONE_SIGNAL_PLCP) &&
713 (rate->plcp == signal)) ||
714 ((type == RXDONE_SIGNAL_BITRATE) &&
715 (rate->bitrate == signal)) ||
716 ((type == RXDONE_SIGNAL_MCS) &&
717 (rate->mcs == signal))) {
718 return i;
719 }
720 }
721 break;
722 case RATE_MODE_HT_MIX:
723 case RATE_MODE_HT_GREENFIELD:
724 if (signal >= 0 && signal <= 76)
725 return signal;
726 break;
727 default:
728 break;
729 }
730
731 rt2x00_warn(rt2x00dev, "Frame received with unrecognized signal, mode=0x%.4x, signal=0x%.4x, type=%d\n",
732 rxdesc->rate_mode, signal, type);
733 return 0;
734}
735
736void rt2x00lib_rxdone(struct queue_entry *entry, gfp_t gfp)
737{
738 struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
739 struct rxdone_entry_desc rxdesc;
740 struct sk_buff *skb;
741 struct ieee80211_rx_status *rx_status;
742 unsigned int header_length;
743 int rate_idx;
744
745 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) ||
746 !test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
747 goto submit_entry;
748
749 if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags))
750 goto submit_entry;
751
752
753
754
755
756 skb = rt2x00queue_alloc_rxskb(entry, gfp);
757 if (!skb)
758 goto submit_entry;
759
760
761
762
763 rt2x00queue_unmap_skb(entry);
764
765
766
767
768 memset(&rxdesc, 0, sizeof(rxdesc));
769 rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc);
770
771
772
773
774
775 if (unlikely(rxdesc.size == 0 ||
776 rxdesc.size > entry->queue->data_size)) {
777 rt2x00_err(rt2x00dev, "Wrong frame size %d max %d\n",
778 rxdesc.size, entry->queue->data_size);
779 dev_kfree_skb(entry->skb);
780 goto renew_skb;
781 }
782
783
784
785
786
787 header_length = ieee80211_get_hdrlen_from_skb(entry->skb);
788
789
790
791
792
793
794
795 if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) &&
796 (rxdesc.flags & RX_FLAG_IV_STRIPPED))
797 rt2x00crypto_rx_insert_iv(entry->skb, header_length,
798 &rxdesc);
799 else if (header_length &&
800 (rxdesc.size > header_length) &&
801 (rxdesc.dev_flags & RXDONE_L2PAD))
802 rt2x00queue_remove_l2pad(entry->skb, header_length);
803
804
805 skb_trim(entry->skb, rxdesc.size);
806
807
808
809
810 rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc);
811 if (rxdesc.rate_mode == RATE_MODE_HT_MIX ||
812 rxdesc.rate_mode == RATE_MODE_HT_GREENFIELD)
813 rxdesc.encoding = RX_ENC_HT;
814
815
816
817
818
819 rt2x00lib_rxdone_check_ps(rt2x00dev, entry->skb, &rxdesc);
820
821
822
823
824
825 rt2x00lib_rxdone_check_ba(rt2x00dev, entry->skb, &rxdesc);
826
827
828
829
830 rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc);
831 rt2x00debug_update_crypto(rt2x00dev, &rxdesc);
832 rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry);
833
834
835
836
837
838 rx_status = IEEE80211_SKB_RXCB(entry->skb);
839
840
841
842
843
844
845 memset(rx_status, 0, sizeof(*rx_status));
846
847 rx_status->mactime = rxdesc.timestamp;
848 rx_status->band = rt2x00dev->curr_band;
849 rx_status->freq = rt2x00dev->curr_freq;
850 rx_status->rate_idx = rate_idx;
851 rx_status->signal = rxdesc.rssi;
852 rx_status->flag = rxdesc.flags;
853 rx_status->enc_flags = rxdesc.enc_flags;
854 rx_status->encoding = rxdesc.encoding;
855 rx_status->bw = rxdesc.bw;
856 rx_status->antenna = rt2x00dev->link.ant.active.rx;
857
858 ieee80211_rx_ni(rt2x00dev->hw, entry->skb);
859
860renew_skb:
861
862
863
864 entry->skb = skb;
865
866submit_entry:
867 entry->flags = 0;
868 rt2x00queue_index_inc(entry, Q_INDEX_DONE);
869 if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) &&
870 test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
871 rt2x00dev->ops->lib->clear_entry(entry);
872}
873EXPORT_SYMBOL_GPL(rt2x00lib_rxdone);
874
875
876
877
878const struct rt2x00_rate rt2x00_supported_rates[12] = {
879 {
880 .flags = DEV_RATE_CCK,
881 .bitrate = 10,
882 .ratemask = BIT(0),
883 .plcp = 0x00,
884 .mcs = RATE_MCS(RATE_MODE_CCK, 0),
885 },
886 {
887 .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE,
888 .bitrate = 20,
889 .ratemask = BIT(1),
890 .plcp = 0x01,
891 .mcs = RATE_MCS(RATE_MODE_CCK, 1),
892 },
893 {
894 .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE,
895 .bitrate = 55,
896 .ratemask = BIT(2),
897 .plcp = 0x02,
898 .mcs = RATE_MCS(RATE_MODE_CCK, 2),
899 },
900 {
901 .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE,
902 .bitrate = 110,
903 .ratemask = BIT(3),
904 .plcp = 0x03,
905 .mcs = RATE_MCS(RATE_MODE_CCK, 3),
906 },
907 {
908 .flags = DEV_RATE_OFDM,
909 .bitrate = 60,
910 .ratemask = BIT(4),
911 .plcp = 0x0b,
912 .mcs = RATE_MCS(RATE_MODE_OFDM, 0),
913 },
914 {
915 .flags = DEV_RATE_OFDM,
916 .bitrate = 90,
917 .ratemask = BIT(5),
918 .plcp = 0x0f,
919 .mcs = RATE_MCS(RATE_MODE_OFDM, 1),
920 },
921 {
922 .flags = DEV_RATE_OFDM,
923 .bitrate = 120,
924 .ratemask = BIT(6),
925 .plcp = 0x0a,
926 .mcs = RATE_MCS(RATE_MODE_OFDM, 2),
927 },
928 {
929 .flags = DEV_RATE_OFDM,
930 .bitrate = 180,
931 .ratemask = BIT(7),
932 .plcp = 0x0e,
933 .mcs = RATE_MCS(RATE_MODE_OFDM, 3),
934 },
935 {
936 .flags = DEV_RATE_OFDM,
937 .bitrate = 240,
938 .ratemask = BIT(8),
939 .plcp = 0x09,
940 .mcs = RATE_MCS(RATE_MODE_OFDM, 4),
941 },
942 {
943 .flags = DEV_RATE_OFDM,
944 .bitrate = 360,
945 .ratemask = BIT(9),
946 .plcp = 0x0d,
947 .mcs = RATE_MCS(RATE_MODE_OFDM, 5),
948 },
949 {
950 .flags = DEV_RATE_OFDM,
951 .bitrate = 480,
952 .ratemask = BIT(10),
953 .plcp = 0x08,
954 .mcs = RATE_MCS(RATE_MODE_OFDM, 6),
955 },
956 {
957 .flags = DEV_RATE_OFDM,
958 .bitrate = 540,
959 .ratemask = BIT(11),
960 .plcp = 0x0c,
961 .mcs = RATE_MCS(RATE_MODE_OFDM, 7),
962 },
963};
964
965static void rt2x00lib_channel(struct ieee80211_channel *entry,
966 const int channel, const int tx_power,
967 const int value)
968{
969
970 entry->band = channel <= 14 ? NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
971 entry->center_freq = ieee80211_channel_to_frequency(channel,
972 entry->band);
973 entry->hw_value = value;
974 entry->max_power = tx_power;
975 entry->max_antenna_gain = 0xff;
976}
977
978static void rt2x00lib_rate(struct ieee80211_rate *entry,
979 const u16 index, const struct rt2x00_rate *rate)
980{
981 entry->flags = 0;
982 entry->bitrate = rate->bitrate;
983 entry->hw_value = index;
984 entry->hw_value_short = index;
985
986 if (rate->flags & DEV_RATE_SHORT_PREAMBLE)
987 entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE;
988}
989
990void rt2x00lib_set_mac_address(struct rt2x00_dev *rt2x00dev, u8 *eeprom_mac_addr)
991{
992 of_get_mac_address(rt2x00dev->dev->of_node, eeprom_mac_addr);
993
994 if (!is_valid_ether_addr(eeprom_mac_addr)) {
995 eth_random_addr(eeprom_mac_addr);
996 rt2x00_eeprom_dbg(rt2x00dev, "MAC: %pM\n", eeprom_mac_addr);
997 }
998}
999EXPORT_SYMBOL_GPL(rt2x00lib_set_mac_address);
1000
1001static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev,
1002 struct hw_mode_spec *spec)
1003{
1004 struct ieee80211_hw *hw = rt2x00dev->hw;
1005 struct ieee80211_channel *channels;
1006 struct ieee80211_rate *rates;
1007 unsigned int num_rates;
1008 unsigned int i;
1009
1010 num_rates = 0;
1011 if (spec->supported_rates & SUPPORT_RATE_CCK)
1012 num_rates += 4;
1013 if (spec->supported_rates & SUPPORT_RATE_OFDM)
1014 num_rates += 8;
1015
1016 channels = kcalloc(spec->num_channels, sizeof(*channels), GFP_KERNEL);
1017 if (!channels)
1018 return -ENOMEM;
1019
1020 rates = kcalloc(num_rates, sizeof(*rates), GFP_KERNEL);
1021 if (!rates)
1022 goto exit_free_channels;
1023
1024
1025
1026
1027 for (i = 0; i < num_rates; i++)
1028 rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i));
1029
1030
1031
1032
1033 for (i = 0; i < spec->num_channels; i++) {
1034 rt2x00lib_channel(&channels[i],
1035 spec->channels[i].channel,
1036 spec->channels_info[i].max_power, i);
1037 }
1038
1039
1040
1041
1042
1043
1044 if (spec->supported_bands & SUPPORT_BAND_2GHZ) {
1045 rt2x00dev->bands[NL80211_BAND_2GHZ].n_channels = 14;
1046 rt2x00dev->bands[NL80211_BAND_2GHZ].n_bitrates = num_rates;
1047 rt2x00dev->bands[NL80211_BAND_2GHZ].channels = channels;
1048 rt2x00dev->bands[NL80211_BAND_2GHZ].bitrates = rates;
1049 hw->wiphy->bands[NL80211_BAND_2GHZ] =
1050 &rt2x00dev->bands[NL80211_BAND_2GHZ];
1051 memcpy(&rt2x00dev->bands[NL80211_BAND_2GHZ].ht_cap,
1052 &spec->ht, sizeof(spec->ht));
1053 }
1054
1055
1056
1057
1058
1059
1060 if (spec->supported_bands & SUPPORT_BAND_5GHZ) {
1061 rt2x00dev->bands[NL80211_BAND_5GHZ].n_channels =
1062 spec->num_channels - 14;
1063 rt2x00dev->bands[NL80211_BAND_5GHZ].n_bitrates =
1064 num_rates - 4;
1065 rt2x00dev->bands[NL80211_BAND_5GHZ].channels = &channels[14];
1066 rt2x00dev->bands[NL80211_BAND_5GHZ].bitrates = &rates[4];
1067 hw->wiphy->bands[NL80211_BAND_5GHZ] =
1068 &rt2x00dev->bands[NL80211_BAND_5GHZ];
1069 memcpy(&rt2x00dev->bands[NL80211_BAND_5GHZ].ht_cap,
1070 &spec->ht, sizeof(spec->ht));
1071 }
1072
1073 return 0;
1074
1075 exit_free_channels:
1076 kfree(channels);
1077 rt2x00_err(rt2x00dev, "Allocation ieee80211 modes failed\n");
1078 return -ENOMEM;
1079}
1080
1081static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev)
1082{
1083 if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags))
1084 ieee80211_unregister_hw(rt2x00dev->hw);
1085
1086 if (likely(rt2x00dev->hw->wiphy->bands[NL80211_BAND_2GHZ])) {
1087 kfree(rt2x00dev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels);
1088 kfree(rt2x00dev->hw->wiphy->bands[NL80211_BAND_2GHZ]->bitrates);
1089 rt2x00dev->hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL;
1090 rt2x00dev->hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL;
1091 }
1092
1093 kfree(rt2x00dev->spec.channels_info);
1094}
1095
1096static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev)
1097{
1098 struct hw_mode_spec *spec = &rt2x00dev->spec;
1099 int status;
1100
1101 if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags))
1102 return 0;
1103
1104
1105
1106
1107 status = rt2x00lib_probe_hw_modes(rt2x00dev, spec);
1108 if (status)
1109 return status;
1110
1111
1112
1113
1114 rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues;
1115
1116
1117
1118
1119 rt2x00dev->hw->extra_tx_headroom =
1120 max_t(unsigned int, IEEE80211_TX_STATUS_HEADROOM,
1121 rt2x00dev->extra_tx_headroom);
1122
1123
1124
1125
1126 if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_L2PAD))
1127 rt2x00dev->hw->extra_tx_headroom += RT2X00_L2PAD_SIZE;
1128 else if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_DMA))
1129 rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE;
1130
1131
1132
1133
1134 rt2x00dev->hw->sta_data_size = sizeof(struct rt2x00_sta);
1135
1136
1137
1138
1139 if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_TXSTATUS_FIFO)) {
1140
1141
1142
1143
1144
1145
1146
1147 int kfifo_size =
1148 roundup_pow_of_two(rt2x00dev->ops->tx_queues *
1149 rt2x00dev->tx->limit *
1150 sizeof(u32));
1151
1152 status = kfifo_alloc(&rt2x00dev->txstatus_fifo, kfifo_size,
1153 GFP_KERNEL);
1154 if (status)
1155 return status;
1156 }
1157
1158
1159
1160
1161
1162
1163#define RT2X00_TASKLET_INIT(taskletname) \
1164 if (rt2x00dev->ops->lib->taskletname) { \
1165 tasklet_setup(&rt2x00dev->taskletname, \
1166 rt2x00dev->ops->lib->taskletname); \
1167 }
1168
1169 RT2X00_TASKLET_INIT(txstatus_tasklet);
1170 RT2X00_TASKLET_INIT(pretbtt_tasklet);
1171 RT2X00_TASKLET_INIT(tbtt_tasklet);
1172 RT2X00_TASKLET_INIT(rxdone_tasklet);
1173 RT2X00_TASKLET_INIT(autowake_tasklet);
1174
1175#undef RT2X00_TASKLET_INIT
1176
1177
1178
1179
1180 status = ieee80211_register_hw(rt2x00dev->hw);
1181 if (status)
1182 return status;
1183
1184 set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags);
1185
1186 return 0;
1187}
1188
1189
1190
1191
1192static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev)
1193{
1194 if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags))
1195 return;
1196
1197
1198
1199
1200 if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_DELAYED_RFKILL))
1201 rt2x00rfkill_unregister(rt2x00dev);
1202
1203
1204
1205
1206 rt2x00dev->ops->lib->uninitialize(rt2x00dev);
1207
1208
1209
1210
1211 rt2x00queue_uninitialize(rt2x00dev);
1212}
1213
1214static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev)
1215{
1216 int status;
1217
1218 if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags))
1219 return 0;
1220
1221
1222
1223
1224 status = rt2x00queue_initialize(rt2x00dev);
1225 if (status)
1226 return status;
1227
1228
1229
1230
1231 status = rt2x00dev->ops->lib->initialize(rt2x00dev);
1232 if (status) {
1233 rt2x00queue_uninitialize(rt2x00dev);
1234 return status;
1235 }
1236
1237 set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags);
1238
1239
1240
1241
1242 if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_DELAYED_RFKILL))
1243 rt2x00rfkill_register(rt2x00dev);
1244
1245 return 0;
1246}
1247
1248int rt2x00lib_start(struct rt2x00_dev *rt2x00dev)
1249{
1250 int retval = 0;
1251
1252
1253
1254
1255
1256 retval = rt2x00lib_load_firmware(rt2x00dev);
1257 if (retval)
1258 goto out;
1259
1260
1261
1262
1263 retval = rt2x00lib_initialize(rt2x00dev);
1264 if (retval)
1265 goto out;
1266
1267 rt2x00dev->intf_ap_count = 0;
1268 rt2x00dev->intf_sta_count = 0;
1269 rt2x00dev->intf_associated = 0;
1270
1271
1272 retval = rt2x00lib_enable_radio(rt2x00dev);
1273 if (retval)
1274 goto out;
1275
1276 set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags);
1277
1278out:
1279 return retval;
1280}
1281
1282void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev)
1283{
1284 if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags))
1285 return;
1286
1287
1288
1289
1290
1291 rt2x00lib_disable_radio(rt2x00dev);
1292
1293 rt2x00dev->intf_ap_count = 0;
1294 rt2x00dev->intf_sta_count = 0;
1295 rt2x00dev->intf_associated = 0;
1296}
1297
1298static inline void rt2x00lib_set_if_combinations(struct rt2x00_dev *rt2x00dev)
1299{
1300 struct ieee80211_iface_limit *if_limit;
1301 struct ieee80211_iface_combination *if_combination;
1302
1303 if (rt2x00dev->ops->max_ap_intf < 2)
1304 return;
1305
1306
1307
1308
1309 if_limit = &rt2x00dev->if_limits_ap;
1310 if_limit->max = rt2x00dev->ops->max_ap_intf;
1311 if_limit->types = BIT(NL80211_IFTYPE_AP);
1312#ifdef CONFIG_MAC80211_MESH
1313 if_limit->types |= BIT(NL80211_IFTYPE_MESH_POINT);
1314#endif
1315
1316
1317
1318
1319 if_combination = &rt2x00dev->if_combinations[IF_COMB_AP];
1320 if_combination->limits = if_limit;
1321 if_combination->n_limits = 1;
1322 if_combination->max_interfaces = if_limit->max;
1323 if_combination->num_different_channels = 1;
1324
1325
1326
1327
1328 rt2x00dev->hw->wiphy->iface_combinations = rt2x00dev->if_combinations;
1329 rt2x00dev->hw->wiphy->n_iface_combinations = 1;
1330}
1331
1332static unsigned int rt2x00dev_extra_tx_headroom(struct rt2x00_dev *rt2x00dev)
1333{
1334 if (WARN_ON(!rt2x00dev->tx))
1335 return 0;
1336
1337 if (rt2x00_is_usb(rt2x00dev))
1338 return rt2x00dev->tx[0].winfo_size + rt2x00dev->tx[0].desc_size;
1339
1340 return rt2x00dev->tx[0].winfo_size;
1341}
1342
1343
1344
1345
1346int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
1347{
1348 int retval = -ENOMEM;
1349
1350
1351
1352
1353 rt2x00lib_set_if_combinations(rt2x00dev);
1354
1355
1356
1357
1358 if (rt2x00dev->ops->drv_data_size > 0) {
1359 rt2x00dev->drv_data = kzalloc(rt2x00dev->ops->drv_data_size,
1360 GFP_KERNEL);
1361 if (!rt2x00dev->drv_data) {
1362 retval = -ENOMEM;
1363 goto exit;
1364 }
1365 }
1366
1367 spin_lock_init(&rt2x00dev->irqmask_lock);
1368 mutex_init(&rt2x00dev->csr_mutex);
1369 mutex_init(&rt2x00dev->conf_mutex);
1370 INIT_LIST_HEAD(&rt2x00dev->bar_list);
1371 spin_lock_init(&rt2x00dev->bar_list_lock);
1372 hrtimer_init(&rt2x00dev->txstatus_timer, CLOCK_MONOTONIC,
1373 HRTIMER_MODE_REL);
1374
1375 set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
1376
1377
1378
1379
1380
1381 rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf);
1382
1383
1384
1385
1386
1387 rt2x00dev->hw->wiphy->addr_mask[ETH_ALEN - 1] =
1388 (rt2x00dev->ops->max_ap_intf - 1);
1389
1390
1391
1392
1393 rt2x00dev->workqueue =
1394 alloc_ordered_workqueue("%s", 0, wiphy_name(rt2x00dev->hw->wiphy));
1395 if (!rt2x00dev->workqueue) {
1396 retval = -ENOMEM;
1397 goto exit;
1398 }
1399
1400 INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled);
1401 INIT_DELAYED_WORK(&rt2x00dev->autowakeup_work, rt2x00lib_autowakeup);
1402 INIT_WORK(&rt2x00dev->sleep_work, rt2x00lib_sleep);
1403
1404
1405
1406
1407 retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev);
1408 if (retval) {
1409 rt2x00_err(rt2x00dev, "Failed to allocate device\n");
1410 goto exit;
1411 }
1412
1413
1414
1415
1416 retval = rt2x00queue_allocate(rt2x00dev);
1417 if (retval)
1418 goto exit;
1419
1420
1421 rt2x00dev->extra_tx_headroom = rt2x00dev_extra_tx_headroom(rt2x00dev);
1422
1423
1424
1425
1426
1427
1428 rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1429 if (rt2x00dev->bcn->limit > 0)
1430 rt2x00dev->hw->wiphy->interface_modes |=
1431 BIT(NL80211_IFTYPE_ADHOC) |
1432#ifdef CONFIG_MAC80211_MESH
1433 BIT(NL80211_IFTYPE_MESH_POINT) |
1434#endif
1435 BIT(NL80211_IFTYPE_AP);
1436
1437 rt2x00dev->hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
1438
1439 wiphy_ext_feature_set(rt2x00dev->hw->wiphy,
1440 NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1441
1442
1443
1444
1445 retval = rt2x00lib_probe_hw(rt2x00dev);
1446 if (retval) {
1447 rt2x00_err(rt2x00dev, "Failed to initialize hw\n");
1448 goto exit;
1449 }
1450
1451
1452
1453
1454 rt2x00link_register(rt2x00dev);
1455 rt2x00leds_register(rt2x00dev);
1456 rt2x00debug_register(rt2x00dev);
1457
1458
1459
1460
1461 if (!rt2x00_has_cap_flag(rt2x00dev, REQUIRE_DELAYED_RFKILL))
1462 rt2x00rfkill_register(rt2x00dev);
1463
1464 return 0;
1465
1466exit:
1467 rt2x00lib_remove_dev(rt2x00dev);
1468
1469 return retval;
1470}
1471EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev);
1472
1473void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev)
1474{
1475 clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
1476
1477
1478
1479
1480 if (!rt2x00_has_cap_flag(rt2x00dev, REQUIRE_DELAYED_RFKILL))
1481 rt2x00rfkill_unregister(rt2x00dev);
1482
1483
1484
1485
1486 rt2x00lib_disable_radio(rt2x00dev);
1487
1488
1489
1490
1491 cancel_work_sync(&rt2x00dev->intf_work);
1492 cancel_delayed_work_sync(&rt2x00dev->autowakeup_work);
1493 cancel_work_sync(&rt2x00dev->sleep_work);
1494
1495 hrtimer_cancel(&rt2x00dev->txstatus_timer);
1496
1497
1498
1499
1500 tasklet_kill(&rt2x00dev->txstatus_tasklet);
1501 tasklet_kill(&rt2x00dev->pretbtt_tasklet);
1502 tasklet_kill(&rt2x00dev->tbtt_tasklet);
1503 tasklet_kill(&rt2x00dev->rxdone_tasklet);
1504 tasklet_kill(&rt2x00dev->autowake_tasklet);
1505
1506
1507
1508
1509 rt2x00lib_uninitialize(rt2x00dev);
1510
1511 if (rt2x00dev->workqueue)
1512 destroy_workqueue(rt2x00dev->workqueue);
1513
1514
1515
1516
1517 kfifo_free(&rt2x00dev->txstatus_fifo);
1518
1519
1520
1521
1522 rt2x00debug_deregister(rt2x00dev);
1523 rt2x00leds_unregister(rt2x00dev);
1524
1525
1526
1527
1528 rt2x00lib_remove_hw(rt2x00dev);
1529
1530
1531
1532
1533 rt2x00lib_free_firmware(rt2x00dev);
1534
1535
1536
1537
1538 rt2x00queue_free(rt2x00dev);
1539
1540
1541
1542
1543 kfree(rt2x00dev->drv_data);
1544}
1545EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev);
1546
1547
1548
1549
1550int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev)
1551{
1552 rt2x00_dbg(rt2x00dev, "Going to sleep\n");
1553
1554
1555
1556
1557 if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
1558 return 0;
1559
1560
1561
1562
1563 rt2x00lib_uninitialize(rt2x00dev);
1564
1565
1566
1567
1568 rt2x00leds_suspend(rt2x00dev);
1569 rt2x00debug_deregister(rt2x00dev);
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582 if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP))
1583 rt2x00_warn(rt2x00dev, "Device failed to enter sleep state, continue suspending\n");
1584
1585 return 0;
1586}
1587EXPORT_SYMBOL_GPL(rt2x00lib_suspend);
1588
1589int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev)
1590{
1591 rt2x00_dbg(rt2x00dev, "Waking up\n");
1592
1593
1594
1595
1596 rt2x00debug_register(rt2x00dev);
1597 rt2x00leds_resume(rt2x00dev);
1598
1599
1600
1601
1602 set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
1603
1604 return 0;
1605}
1606EXPORT_SYMBOL_GPL(rt2x00lib_resume);
1607
1608
1609
1610
1611MODULE_AUTHOR(DRV_PROJECT);
1612MODULE_VERSION(DRV_VERSION);
1613MODULE_DESCRIPTION("rt2x00 library");
1614MODULE_LICENSE("GPL");
1615