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18#include "mac.h"
19
20#include <net/mac80211.h>
21#include "hif.h"
22#include "core.h"
23#include "debug.h"
24#include "wmi.h"
25#include "wmi-ops.h"
26
27static const struct wiphy_wowlan_support ath10k_wowlan_support = {
28 .flags = WIPHY_WOWLAN_DISCONNECT |
29 WIPHY_WOWLAN_MAGIC_PKT,
30 .pattern_min_len = WOW_MIN_PATTERN_SIZE,
31 .pattern_max_len = WOW_MAX_PATTERN_SIZE,
32 .max_pkt_offset = WOW_MAX_PKT_OFFSET,
33};
34
35static int ath10k_wow_vif_cleanup(struct ath10k_vif *arvif)
36{
37 struct ath10k *ar = arvif->ar;
38 int i, ret;
39
40 for (i = 0; i < WOW_EVENT_MAX; i++) {
41 ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 0);
42 if (ret) {
43 ath10k_warn(ar, "failed to issue wow wakeup for event %s on vdev %i: %d\n",
44 wow_wakeup_event(i), arvif->vdev_id, ret);
45 return ret;
46 }
47 }
48
49 for (i = 0; i < ar->wow.max_num_patterns; i++) {
50 ret = ath10k_wmi_wow_del_pattern(ar, arvif->vdev_id, i);
51 if (ret) {
52 ath10k_warn(ar, "failed to delete wow pattern %d for vdev %i: %d\n",
53 i, arvif->vdev_id, ret);
54 return ret;
55 }
56 }
57
58 return 0;
59}
60
61static int ath10k_wow_cleanup(struct ath10k *ar)
62{
63 struct ath10k_vif *arvif;
64 int ret;
65
66 lockdep_assert_held(&ar->conf_mutex);
67
68 list_for_each_entry(arvif, &ar->arvifs, list) {
69 ret = ath10k_wow_vif_cleanup(arvif);
70 if (ret) {
71 ath10k_warn(ar, "failed to clean wow wakeups on vdev %i: %d\n",
72 arvif->vdev_id, ret);
73 return ret;
74 }
75 }
76
77 return 0;
78}
79
80
81
82
83
84
85
86
87
88
89
90
91static void ath10k_wow_convert_8023_to_80211
92 (struct cfg80211_pkt_pattern *new,
93 const struct cfg80211_pkt_pattern *old)
94{
95 u8 hdr_8023_pattern[ETH_HLEN] = {};
96 u8 hdr_8023_bit_mask[ETH_HLEN] = {};
97 u8 hdr_80211_pattern[WOW_HDR_LEN] = {};
98 u8 hdr_80211_bit_mask[WOW_HDR_LEN] = {};
99
100 int total_len = old->pkt_offset + old->pattern_len;
101 int hdr_80211_end_offset;
102
103 struct ieee80211_hdr_3addr *new_hdr_pattern =
104 (struct ieee80211_hdr_3addr *)hdr_80211_pattern;
105 struct ieee80211_hdr_3addr *new_hdr_mask =
106 (struct ieee80211_hdr_3addr *)hdr_80211_bit_mask;
107 struct ethhdr *old_hdr_pattern = (struct ethhdr *)hdr_8023_pattern;
108 struct ethhdr *old_hdr_mask = (struct ethhdr *)hdr_8023_bit_mask;
109 int hdr_len = sizeof(*new_hdr_pattern);
110
111 struct rfc1042_hdr *new_rfc_pattern =
112 (struct rfc1042_hdr *)(hdr_80211_pattern + hdr_len);
113 struct rfc1042_hdr *new_rfc_mask =
114 (struct rfc1042_hdr *)(hdr_80211_bit_mask + hdr_len);
115 int rfc_len = sizeof(*new_rfc_pattern);
116
117 memcpy(hdr_8023_pattern + old->pkt_offset,
118 old->pattern, ETH_HLEN - old->pkt_offset);
119 memcpy(hdr_8023_bit_mask + old->pkt_offset,
120 old->mask, ETH_HLEN - old->pkt_offset);
121
122
123 memcpy(new_hdr_pattern->addr1, old_hdr_pattern->h_dest, ETH_ALEN);
124 memcpy(new_hdr_mask->addr1, old_hdr_mask->h_dest, ETH_ALEN);
125
126
127 memcpy(new_hdr_pattern->addr3, old_hdr_pattern->h_source, ETH_ALEN);
128 memcpy(new_hdr_mask->addr3, old_hdr_mask->h_source, ETH_ALEN);
129
130
131 memcpy(&new_rfc_pattern->snap_type,
132 &old_hdr_pattern->h_proto,
133 sizeof(old_hdr_pattern->h_proto));
134 memcpy(&new_rfc_mask->snap_type,
135 &old_hdr_mask->h_proto,
136 sizeof(old_hdr_mask->h_proto));
137
138
139 if (old->pkt_offset < ETH_ALEN)
140 new->pkt_offset = old->pkt_offset +
141 offsetof(struct ieee80211_hdr_3addr, addr1);
142 else if (old->pkt_offset < offsetof(struct ethhdr, h_proto))
143 new->pkt_offset = old->pkt_offset +
144 offsetof(struct ieee80211_hdr_3addr, addr3) -
145 offsetof(struct ethhdr, h_source);
146 else
147 new->pkt_offset = old->pkt_offset + hdr_len + rfc_len - ETH_HLEN;
148
149
150 if (total_len > ETH_HLEN)
151 hdr_80211_end_offset = hdr_len + rfc_len;
152 else if (total_len > offsetof(struct ethhdr, h_proto))
153 hdr_80211_end_offset = hdr_len + rfc_len + total_len - ETH_HLEN;
154 else if (total_len > ETH_ALEN)
155 hdr_80211_end_offset = total_len - ETH_ALEN +
156 offsetof(struct ieee80211_hdr_3addr, addr3);
157 else
158 hdr_80211_end_offset = total_len +
159 offsetof(struct ieee80211_hdr_3addr, addr1);
160
161 new->pattern_len = hdr_80211_end_offset - new->pkt_offset;
162
163 memcpy((u8 *)new->pattern,
164 hdr_80211_pattern + new->pkt_offset,
165 new->pattern_len);
166 memcpy((u8 *)new->mask,
167 hdr_80211_bit_mask + new->pkt_offset,
168 new->pattern_len);
169
170 if (total_len > ETH_HLEN) {
171
172 memcpy((u8 *)new->pattern + new->pattern_len,
173 (void *)old->pattern + ETH_HLEN - old->pkt_offset,
174 total_len - ETH_HLEN);
175 memcpy((u8 *)new->mask + new->pattern_len,
176 (void *)old->mask + ETH_HLEN - old->pkt_offset,
177 total_len - ETH_HLEN);
178
179 new->pattern_len += total_len - ETH_HLEN;
180 }
181}
182
183static int ath10k_wmi_pno_check(struct ath10k *ar, u32 vdev_id,
184 struct cfg80211_sched_scan_request *nd_config,
185 struct wmi_pno_scan_req *pno)
186{
187 int i, j, ret = 0;
188 u8 ssid_len;
189
190 pno->enable = 1;
191 pno->vdev_id = vdev_id;
192 pno->uc_networks_count = nd_config->n_match_sets;
193
194 if (!pno->uc_networks_count ||
195 pno->uc_networks_count > WMI_PNO_MAX_SUPP_NETWORKS)
196 return -EINVAL;
197
198 if (nd_config->n_channels > WMI_PNO_MAX_NETW_CHANNELS_EX)
199 return -EINVAL;
200
201
202 for (i = 0; i < pno->uc_networks_count; i++) {
203 ssid_len = nd_config->match_sets[i].ssid.ssid_len;
204
205 if (ssid_len == 0 || ssid_len > 32)
206 return -EINVAL;
207
208 pno->a_networks[i].ssid.ssid_len = __cpu_to_le32(ssid_len);
209
210 memcpy(pno->a_networks[i].ssid.ssid,
211 nd_config->match_sets[i].ssid.ssid,
212 nd_config->match_sets[i].ssid.ssid_len);
213 pno->a_networks[i].authentication = 0;
214 pno->a_networks[i].encryption = 0;
215 pno->a_networks[i].bcast_nw_type = 0;
216
217
218 pno->a_networks[i].channel_count = nd_config->n_channels;
219 pno->a_networks[i].rssi_threshold = nd_config->match_sets[i].rssi_thold;
220
221 for (j = 0; j < nd_config->n_channels; j++) {
222 pno->a_networks[i].channels[j] =
223 nd_config->channels[j]->center_freq;
224 }
225 }
226
227
228 if (nd_config->n_ssids == 0)
229 pno->do_passive_scan = true;
230 else
231 pno->do_passive_scan = false;
232
233 for (i = 0; i < nd_config->n_ssids; i++) {
234 j = 0;
235 while (j < pno->uc_networks_count) {
236 if (__le32_to_cpu(pno->a_networks[j].ssid.ssid_len) ==
237 nd_config->ssids[i].ssid_len &&
238 (memcmp(pno->a_networks[j].ssid.ssid,
239 nd_config->ssids[i].ssid,
240 __le32_to_cpu(pno->a_networks[j].ssid.ssid_len)) == 0)) {
241 pno->a_networks[j].bcast_nw_type = BCAST_HIDDEN;
242 break;
243 }
244 j++;
245 }
246 }
247
248 if (nd_config->n_scan_plans == 2) {
249 pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
250 pno->fast_scan_max_cycles = nd_config->scan_plans[0].iterations;
251 pno->slow_scan_period =
252 nd_config->scan_plans[1].interval * MSEC_PER_SEC;
253 } else if (nd_config->n_scan_plans == 1) {
254 pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
255 pno->fast_scan_max_cycles = 1;
256 pno->slow_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
257 } else {
258 ath10k_warn(ar, "Invalid number of scan plans %d !!",
259 nd_config->n_scan_plans);
260 }
261
262 if (nd_config->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
263
264 pno->enable_pno_scan_randomization = 1;
265 memcpy(pno->mac_addr, nd_config->mac_addr, ETH_ALEN);
266 memcpy(pno->mac_addr_mask, nd_config->mac_addr_mask, ETH_ALEN);
267 }
268
269 pno->delay_start_time = nd_config->delay;
270
271
272 pno->active_max_time = WMI_ACTIVE_MAX_CHANNEL_TIME;
273 pno->passive_max_time = WMI_PASSIVE_MAX_CHANNEL_TIME;
274 return ret;
275}
276
277static int ath10k_vif_wow_set_wakeups(struct ath10k_vif *arvif,
278 struct cfg80211_wowlan *wowlan)
279{
280 int ret, i;
281 unsigned long wow_mask = 0;
282 struct ath10k *ar = arvif->ar;
283 const struct cfg80211_pkt_pattern *patterns = wowlan->patterns;
284 int pattern_id = 0;
285
286
287 switch (arvif->vdev_type) {
288 case WMI_VDEV_TYPE_IBSS:
289 __set_bit(WOW_BEACON_EVENT, &wow_mask);
290
291 case WMI_VDEV_TYPE_AP:
292 __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
293 __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
294 __set_bit(WOW_PROBE_REQ_WPS_IE_EVENT, &wow_mask);
295 __set_bit(WOW_AUTH_REQ_EVENT, &wow_mask);
296 __set_bit(WOW_ASSOC_REQ_EVENT, &wow_mask);
297 __set_bit(WOW_HTT_EVENT, &wow_mask);
298 __set_bit(WOW_RA_MATCH_EVENT, &wow_mask);
299 break;
300 case WMI_VDEV_TYPE_STA:
301 if (wowlan->disconnect) {
302 __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
303 __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
304 __set_bit(WOW_BMISS_EVENT, &wow_mask);
305 __set_bit(WOW_CSA_IE_EVENT, &wow_mask);
306 }
307
308 if (wowlan->magic_pkt)
309 __set_bit(WOW_MAGIC_PKT_RECVD_EVENT, &wow_mask);
310
311 if (wowlan->nd_config) {
312 struct wmi_pno_scan_req *pno;
313 int ret;
314
315 pno = kzalloc(sizeof(*pno), GFP_KERNEL);
316 if (!pno)
317 return -ENOMEM;
318
319 ar->nlo_enabled = true;
320
321 ret = ath10k_wmi_pno_check(ar, arvif->vdev_id,
322 wowlan->nd_config, pno);
323 if (!ret) {
324 ath10k_wmi_wow_config_pno(ar, arvif->vdev_id, pno);
325 __set_bit(WOW_NLO_DETECTED_EVENT, &wow_mask);
326 }
327
328 kfree(pno);
329 }
330 break;
331 default:
332 break;
333 }
334
335 for (i = 0; i < wowlan->n_patterns; i++) {
336 u8 bitmask[WOW_MAX_PATTERN_SIZE] = {};
337 u8 ath_pattern[WOW_MAX_PATTERN_SIZE] = {};
338 u8 ath_bitmask[WOW_MAX_PATTERN_SIZE] = {};
339 struct cfg80211_pkt_pattern new_pattern = {};
340 struct cfg80211_pkt_pattern old_pattern = patterns[i];
341 int j;
342
343 new_pattern.pattern = ath_pattern;
344 new_pattern.mask = ath_bitmask;
345 if (patterns[i].pattern_len > WOW_MAX_PATTERN_SIZE)
346 continue;
347
348 for (j = 0; j < patterns[i].pattern_len; j++)
349 if (patterns[i].mask[j / 8] & BIT(j % 8))
350 bitmask[j] = 0xff;
351 old_pattern.mask = bitmask;
352 new_pattern = old_pattern;
353
354 if (ar->wmi.rx_decap_mode == ATH10K_HW_TXRX_NATIVE_WIFI) {
355 if (patterns[i].pkt_offset < ETH_HLEN)
356 ath10k_wow_convert_8023_to_80211(&new_pattern,
357 &old_pattern);
358 else
359 new_pattern.pkt_offset += WOW_HDR_LEN - ETH_HLEN;
360 }
361
362 if (WARN_ON(new_pattern.pattern_len > WOW_MAX_PATTERN_SIZE))
363 return -EINVAL;
364
365 ret = ath10k_wmi_wow_add_pattern(ar, arvif->vdev_id,
366 pattern_id,
367 new_pattern.pattern,
368 new_pattern.mask,
369 new_pattern.pattern_len,
370 new_pattern.pkt_offset);
371 if (ret) {
372 ath10k_warn(ar, "failed to add pattern %i to vdev %i: %d\n",
373 pattern_id,
374 arvif->vdev_id, ret);
375 return ret;
376 }
377
378 pattern_id++;
379 __set_bit(WOW_PATTERN_MATCH_EVENT, &wow_mask);
380 }
381
382 for (i = 0; i < WOW_EVENT_MAX; i++) {
383 if (!test_bit(i, &wow_mask))
384 continue;
385 ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 1);
386 if (ret) {
387 ath10k_warn(ar, "failed to enable wakeup event %s on vdev %i: %d\n",
388 wow_wakeup_event(i), arvif->vdev_id, ret);
389 return ret;
390 }
391 }
392
393 return 0;
394}
395
396static int ath10k_wow_set_wakeups(struct ath10k *ar,
397 struct cfg80211_wowlan *wowlan)
398{
399 struct ath10k_vif *arvif;
400 int ret;
401
402 lockdep_assert_held(&ar->conf_mutex);
403
404 list_for_each_entry(arvif, &ar->arvifs, list) {
405 ret = ath10k_vif_wow_set_wakeups(arvif, wowlan);
406 if (ret) {
407 ath10k_warn(ar, "failed to set wow wakeups on vdev %i: %d\n",
408 arvif->vdev_id, ret);
409 return ret;
410 }
411 }
412
413 return 0;
414}
415
416static int ath10k_vif_wow_clean_nlo(struct ath10k_vif *arvif)
417{
418 int ret = 0;
419 struct ath10k *ar = arvif->ar;
420
421 switch (arvif->vdev_type) {
422 case WMI_VDEV_TYPE_STA:
423 if (ar->nlo_enabled) {
424 struct wmi_pno_scan_req *pno;
425
426 pno = kzalloc(sizeof(*pno), GFP_KERNEL);
427 if (!pno)
428 return -ENOMEM;
429
430 pno->enable = 0;
431 ar->nlo_enabled = false;
432 ret = ath10k_wmi_wow_config_pno(ar, arvif->vdev_id, pno);
433 kfree(pno);
434 }
435 break;
436 default:
437 break;
438 }
439 return ret;
440}
441
442static int ath10k_wow_nlo_cleanup(struct ath10k *ar)
443{
444 struct ath10k_vif *arvif;
445 int ret = 0;
446
447 lockdep_assert_held(&ar->conf_mutex);
448
449 list_for_each_entry(arvif, &ar->arvifs, list) {
450 ret = ath10k_vif_wow_clean_nlo(arvif);
451 if (ret) {
452 ath10k_warn(ar, "failed to clean nlo settings on vdev %i: %d\n",
453 arvif->vdev_id, ret);
454 return ret;
455 }
456 }
457
458 return 0;
459}
460
461static int ath10k_wow_enable(struct ath10k *ar)
462{
463 int ret;
464
465 lockdep_assert_held(&ar->conf_mutex);
466
467 reinit_completion(&ar->target_suspend);
468
469 ret = ath10k_wmi_wow_enable(ar);
470 if (ret) {
471 ath10k_warn(ar, "failed to issue wow enable: %d\n", ret);
472 return ret;
473 }
474
475 ret = wait_for_completion_timeout(&ar->target_suspend, 3 * HZ);
476 if (ret == 0) {
477 ath10k_warn(ar, "timed out while waiting for suspend completion\n");
478 return -ETIMEDOUT;
479 }
480
481 return 0;
482}
483
484static int ath10k_wow_wakeup(struct ath10k *ar)
485{
486 int ret;
487
488 lockdep_assert_held(&ar->conf_mutex);
489
490 reinit_completion(&ar->wow.wakeup_completed);
491
492 ret = ath10k_wmi_wow_host_wakeup_ind(ar);
493 if (ret) {
494 ath10k_warn(ar, "failed to send wow wakeup indication: %d\n",
495 ret);
496 return ret;
497 }
498
499 ret = wait_for_completion_timeout(&ar->wow.wakeup_completed, 3 * HZ);
500 if (ret == 0) {
501 ath10k_warn(ar, "timed out while waiting for wow wakeup completion\n");
502 return -ETIMEDOUT;
503 }
504
505 return 0;
506}
507
508int ath10k_wow_op_suspend(struct ieee80211_hw *hw,
509 struct cfg80211_wowlan *wowlan)
510{
511 struct ath10k *ar = hw->priv;
512 int ret;
513
514 mutex_lock(&ar->conf_mutex);
515
516 if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
517 ar->running_fw->fw_file.fw_features))) {
518 ret = 1;
519 goto exit;
520 }
521
522 ret = ath10k_wow_cleanup(ar);
523 if (ret) {
524 ath10k_warn(ar, "failed to clear wow wakeup events: %d\n",
525 ret);
526 goto exit;
527 }
528
529 ret = ath10k_wow_set_wakeups(ar, wowlan);
530 if (ret) {
531 ath10k_warn(ar, "failed to set wow wakeup events: %d\n",
532 ret);
533 goto cleanup;
534 }
535
536 ath10k_mac_wait_tx_complete(ar);
537
538 ret = ath10k_wow_enable(ar);
539 if (ret) {
540 ath10k_warn(ar, "failed to start wow: %d\n", ret);
541 goto cleanup;
542 }
543
544 ret = ath10k_hif_suspend(ar);
545 if (ret) {
546 ath10k_warn(ar, "failed to suspend hif: %d\n", ret);
547 goto wakeup;
548 }
549
550 goto exit;
551
552wakeup:
553 ath10k_wow_wakeup(ar);
554
555cleanup:
556 ath10k_wow_cleanup(ar);
557
558exit:
559 mutex_unlock(&ar->conf_mutex);
560 return ret ? 1 : 0;
561}
562
563void ath10k_wow_op_set_wakeup(struct ieee80211_hw *hw, bool enabled)
564{
565 struct ath10k *ar = hw->priv;
566
567 mutex_lock(&ar->conf_mutex);
568 if (test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
569 ar->running_fw->fw_file.fw_features)) {
570 device_set_wakeup_enable(ar->dev, enabled);
571 }
572 mutex_unlock(&ar->conf_mutex);
573}
574
575int ath10k_wow_op_resume(struct ieee80211_hw *hw)
576{
577 struct ath10k *ar = hw->priv;
578 int ret;
579
580 mutex_lock(&ar->conf_mutex);
581
582 if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
583 ar->running_fw->fw_file.fw_features))) {
584 ret = 1;
585 goto exit;
586 }
587
588 ret = ath10k_hif_resume(ar);
589 if (ret) {
590 ath10k_warn(ar, "failed to resume hif: %d\n", ret);
591 goto exit;
592 }
593
594 ret = ath10k_wow_wakeup(ar);
595 if (ret)
596 ath10k_warn(ar, "failed to wakeup from wow: %d\n", ret);
597
598 ret = ath10k_wow_nlo_cleanup(ar);
599 if (ret)
600 ath10k_warn(ar, "failed to cleanup nlo: %d\n", ret);
601
602exit:
603 if (ret) {
604 switch (ar->state) {
605 case ATH10K_STATE_ON:
606 ar->state = ATH10K_STATE_RESTARTING;
607 ret = 1;
608 break;
609 case ATH10K_STATE_OFF:
610 case ATH10K_STATE_RESTARTING:
611 case ATH10K_STATE_RESTARTED:
612 case ATH10K_STATE_UTF:
613 case ATH10K_STATE_WEDGED:
614 ath10k_warn(ar, "encountered unexpected device state %d on resume, cannot recover\n",
615 ar->state);
616 ret = -EIO;
617 break;
618 }
619 }
620
621 mutex_unlock(&ar->conf_mutex);
622 return ret;
623}
624
625int ath10k_wow_init(struct ath10k *ar)
626{
627 if (!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
628 ar->running_fw->fw_file.fw_features))
629 return 0;
630
631 if (WARN_ON(!test_bit(WMI_SERVICE_WOW, ar->wmi.svc_map)))
632 return -EINVAL;
633
634 ar->wow.wowlan_support = ath10k_wowlan_support;
635
636 if (ar->wmi.rx_decap_mode == ATH10K_HW_TXRX_NATIVE_WIFI) {
637 ar->wow.wowlan_support.pattern_max_len -= WOW_MAX_REDUCE;
638 ar->wow.wowlan_support.max_pkt_offset -= WOW_MAX_REDUCE;
639 }
640
641 if (test_bit(WMI_SERVICE_NLO, ar->wmi.svc_map)) {
642 ar->wow.wowlan_support.flags |= WIPHY_WOWLAN_NET_DETECT;
643 ar->wow.wowlan_support.max_nd_match_sets = WMI_PNO_MAX_SUPP_NETWORKS;
644 }
645
646 ar->wow.wowlan_support.n_patterns = ar->wow.max_num_patterns;
647 ar->hw->wiphy->wowlan = &ar->wow.wowlan_support;
648
649 device_set_wakeup_capable(ar->dev, true);
650
651 return 0;
652}
653
