1 // SPDX-License-Identifier: ISC
2 /*
3  * Copyright (c) 2015-2017 Qualcomm Atheros, Inc.
4  * Copyright (c) 2018, The Linux Foundation. All rights reserved.
5  */
6 
7 #include "mac.h"
8 
9 #include <net/mac80211.h>
10 #include "hif.h"
11 #include "core.h"
12 #include "debug.h"
13 #include "wmi.h"
14 #include "wmi-ops.h"
15 
16 static const struct wiphy_wowlan_support ath10k_wowlan_support = {
17 	.flags = WIPHY_WOWLAN_DISCONNECT |
18 		 WIPHY_WOWLAN_MAGIC_PKT,
19 	.pattern_min_len = WOW_MIN_PATTERN_SIZE,
20 	.pattern_max_len = WOW_MAX_PATTERN_SIZE,
21 	.max_pkt_offset = WOW_MAX_PKT_OFFSET,
22 };
23 
ath10k_wow_vif_cleanup(struct ath10k_vif * arvif)24 static int ath10k_wow_vif_cleanup(struct ath10k_vif *arvif)
25 {
26 	struct ath10k *ar = arvif->ar;
27 	int i, ret;
28 
29 	for (i = 0; i < WOW_EVENT_MAX; i++) {
30 		ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 0);
31 		if (ret) {
32 			ath10k_warn(ar, "failed to issue wow wakeup for event %s on vdev %i: %d\n",
33 				    wow_wakeup_event(i), arvif->vdev_id, ret);
34 			return ret;
35 		}
36 	}
37 
38 	for (i = 0; i < ar->wow.max_num_patterns; i++) {
39 		ret = ath10k_wmi_wow_del_pattern(ar, arvif->vdev_id, i);
40 		if (ret) {
41 			ath10k_warn(ar, "failed to delete wow pattern %d for vdev %i: %d\n",
42 				    i, arvif->vdev_id, ret);
43 			return ret;
44 		}
45 	}
46 
47 	return 0;
48 }
49 
ath10k_wow_cleanup(struct ath10k * ar)50 static int ath10k_wow_cleanup(struct ath10k *ar)
51 {
52 	struct ath10k_vif *arvif;
53 	int ret;
54 
55 	lockdep_assert_held(&ar->conf_mutex);
56 
57 	list_for_each_entry(arvif, &ar->arvifs, list) {
58 		ret = ath10k_wow_vif_cleanup(arvif);
59 		if (ret) {
60 			ath10k_warn(ar, "failed to clean wow wakeups on vdev %i: %d\n",
61 				    arvif->vdev_id, ret);
62 			return ret;
63 		}
64 	}
65 
66 	return 0;
67 }
68 
69 /*
70  * Convert a 802.3 format to a 802.11 format.
71  *         +------------+-----------+--------+----------------+
72  * 802.3:  |dest mac(6B)|src mac(6B)|type(2B)|     body...    |
73  *         +------------+-----------+--------+----------------+
74  *                |__         |_______    |____________  |________
75  *                   |                |                |          |
76  *         +--+------------+----+-----------+---------------+-----------+
77  * 802.11: |4B|dest mac(6B)| 6B |src mac(6B)|  8B  |type(2B)|  body...  |
78  *         +--+------------+----+-----------+---------------+-----------+
79  */
ath10k_wow_convert_8023_to_80211(struct cfg80211_pkt_pattern * new,const struct cfg80211_pkt_pattern * old)80 static void ath10k_wow_convert_8023_to_80211(struct cfg80211_pkt_pattern *new,
81 					     const struct cfg80211_pkt_pattern *old)
82 {
83 	u8 hdr_8023_pattern[ETH_HLEN] = {};
84 	u8 hdr_8023_bit_mask[ETH_HLEN] = {};
85 	u8 hdr_80211_pattern[WOW_HDR_LEN] = {};
86 	u8 hdr_80211_bit_mask[WOW_HDR_LEN] = {};
87 
88 	int total_len = old->pkt_offset + old->pattern_len;
89 	int hdr_80211_end_offset;
90 
91 	struct ieee80211_hdr_3addr *new_hdr_pattern =
92 		(struct ieee80211_hdr_3addr *)hdr_80211_pattern;
93 	struct ieee80211_hdr_3addr *new_hdr_mask =
94 		(struct ieee80211_hdr_3addr *)hdr_80211_bit_mask;
95 	struct ethhdr *old_hdr_pattern = (struct ethhdr *)hdr_8023_pattern;
96 	struct ethhdr *old_hdr_mask = (struct ethhdr *)hdr_8023_bit_mask;
97 	int hdr_len = sizeof(*new_hdr_pattern);
98 
99 	struct rfc1042_hdr *new_rfc_pattern =
100 		(struct rfc1042_hdr *)(hdr_80211_pattern + hdr_len);
101 	struct rfc1042_hdr *new_rfc_mask =
102 		(struct rfc1042_hdr *)(hdr_80211_bit_mask + hdr_len);
103 	int rfc_len = sizeof(*new_rfc_pattern);
104 
105 	memcpy(hdr_8023_pattern + old->pkt_offset,
106 	       old->pattern, ETH_HLEN - old->pkt_offset);
107 	memcpy(hdr_8023_bit_mask + old->pkt_offset,
108 	       old->mask, ETH_HLEN - old->pkt_offset);
109 
110 	/* Copy destination address */
111 	memcpy(new_hdr_pattern->addr1, old_hdr_pattern->h_dest, ETH_ALEN);
112 	memcpy(new_hdr_mask->addr1, old_hdr_mask->h_dest, ETH_ALEN);
113 
114 	/* Copy source address */
115 	memcpy(new_hdr_pattern->addr3, old_hdr_pattern->h_source, ETH_ALEN);
116 	memcpy(new_hdr_mask->addr3, old_hdr_mask->h_source, ETH_ALEN);
117 
118 	/* Copy logic link type */
119 	memcpy(&new_rfc_pattern->snap_type,
120 	       &old_hdr_pattern->h_proto,
121 	       sizeof(old_hdr_pattern->h_proto));
122 	memcpy(&new_rfc_mask->snap_type,
123 	       &old_hdr_mask->h_proto,
124 	       sizeof(old_hdr_mask->h_proto));
125 
126 	/* Calculate new pkt_offset */
127 	if (old->pkt_offset < ETH_ALEN)
128 		new->pkt_offset = old->pkt_offset +
129 			offsetof(struct ieee80211_hdr_3addr, addr1);
130 	else if (old->pkt_offset < offsetof(struct ethhdr, h_proto))
131 		new->pkt_offset = old->pkt_offset +
132 			offsetof(struct ieee80211_hdr_3addr, addr3) -
133 			offsetof(struct ethhdr, h_source);
134 	else
135 		new->pkt_offset = old->pkt_offset + hdr_len + rfc_len - ETH_HLEN;
136 
137 	/* Calculate new hdr end offset */
138 	if (total_len > ETH_HLEN)
139 		hdr_80211_end_offset = hdr_len + rfc_len;
140 	else if (total_len > offsetof(struct ethhdr, h_proto))
141 		hdr_80211_end_offset = hdr_len + rfc_len + total_len - ETH_HLEN;
142 	else if (total_len > ETH_ALEN)
143 		hdr_80211_end_offset = total_len - ETH_ALEN +
144 			offsetof(struct ieee80211_hdr_3addr, addr3);
145 	else
146 		hdr_80211_end_offset = total_len +
147 			offsetof(struct ieee80211_hdr_3addr, addr1);
148 
149 	new->pattern_len = hdr_80211_end_offset - new->pkt_offset;
150 
151 	memcpy((u8 *)new->pattern,
152 	       hdr_80211_pattern + new->pkt_offset,
153 	       new->pattern_len);
154 	memcpy((u8 *)new->mask,
155 	       hdr_80211_bit_mask + new->pkt_offset,
156 	       new->pattern_len);
157 
158 	if (total_len > ETH_HLEN) {
159 		/* Copy frame body */
160 		memcpy((u8 *)new->pattern + new->pattern_len,
161 		       (void *)old->pattern + ETH_HLEN - old->pkt_offset,
162 		       total_len - ETH_HLEN);
163 		memcpy((u8 *)new->mask + new->pattern_len,
164 		       (void *)old->mask + ETH_HLEN - old->pkt_offset,
165 		       total_len - ETH_HLEN);
166 
167 		new->pattern_len += total_len - ETH_HLEN;
168 	}
169 }
170 
ath10k_wmi_pno_check(struct ath10k * ar,u32 vdev_id,struct cfg80211_sched_scan_request * nd_config,struct wmi_pno_scan_req * pno)171 static int ath10k_wmi_pno_check(struct ath10k *ar, u32 vdev_id,
172 				struct cfg80211_sched_scan_request *nd_config,
173 				struct wmi_pno_scan_req *pno)
174 {
175 	int i, j, ret = 0;
176 	u8 ssid_len;
177 
178 	pno->enable = 1;
179 	pno->vdev_id = vdev_id;
180 	pno->uc_networks_count = nd_config->n_match_sets;
181 
182 	if (!pno->uc_networks_count ||
183 	    pno->uc_networks_count > WMI_PNO_MAX_SUPP_NETWORKS)
184 		return -EINVAL;
185 
186 	if (nd_config->n_channels > WMI_PNO_MAX_NETW_CHANNELS_EX)
187 		return -EINVAL;
188 
189 	/* Filling per profile  params */
190 	for (i = 0; i < pno->uc_networks_count; i++) {
191 		ssid_len = nd_config->match_sets[i].ssid.ssid_len;
192 
193 		if (ssid_len == 0 || ssid_len > 32)
194 			return -EINVAL;
195 
196 		pno->a_networks[i].ssid.ssid_len = __cpu_to_le32(ssid_len);
197 
198 		memcpy(pno->a_networks[i].ssid.ssid,
199 		       nd_config->match_sets[i].ssid.ssid,
200 		       nd_config->match_sets[i].ssid.ssid_len);
201 		pno->a_networks[i].authentication = 0;
202 		pno->a_networks[i].encryption     = 0;
203 		pno->a_networks[i].bcast_nw_type  = 0;
204 
205 		/*Copying list of valid channel into request */
206 		pno->a_networks[i].channel_count = nd_config->n_channels;
207 		pno->a_networks[i].rssi_threshold = nd_config->match_sets[i].rssi_thold;
208 
209 		for (j = 0; j < nd_config->n_channels; j++) {
210 			pno->a_networks[i].channels[j] =
211 					nd_config->channels[j]->center_freq;
212 		}
213 	}
214 
215 	/* set scan to passive if no SSIDs are specified in the request */
216 	if (nd_config->n_ssids == 0)
217 		pno->do_passive_scan = true;
218 	else
219 		pno->do_passive_scan = false;
220 
221 	for (i = 0; i < nd_config->n_ssids; i++) {
222 		j = 0;
223 		while (j < pno->uc_networks_count) {
224 			if (__le32_to_cpu(pno->a_networks[j].ssid.ssid_len) ==
225 				nd_config->ssids[i].ssid_len &&
226 			(memcmp(pno->a_networks[j].ssid.ssid,
227 				nd_config->ssids[i].ssid,
228 				__le32_to_cpu(pno->a_networks[j].ssid.ssid_len)) == 0)) {
229 				pno->a_networks[j].bcast_nw_type = BCAST_HIDDEN;
230 				break;
231 			}
232 			j++;
233 		}
234 	}
235 
236 	if (nd_config->n_scan_plans == 2) {
237 		pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
238 		pno->fast_scan_max_cycles = nd_config->scan_plans[0].iterations;
239 		pno->slow_scan_period =
240 			nd_config->scan_plans[1].interval * MSEC_PER_SEC;
241 	} else if (nd_config->n_scan_plans == 1) {
242 		pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
243 		pno->fast_scan_max_cycles = 1;
244 		pno->slow_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
245 	} else {
246 		ath10k_warn(ar, "Invalid number of scan plans %d !!",
247 			    nd_config->n_scan_plans);
248 	}
249 
250 	if (nd_config->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
251 		/* enable mac randomization */
252 		pno->enable_pno_scan_randomization = 1;
253 		memcpy(pno->mac_addr, nd_config->mac_addr, ETH_ALEN);
254 		memcpy(pno->mac_addr_mask, nd_config->mac_addr_mask, ETH_ALEN);
255 	}
256 
257 	pno->delay_start_time = nd_config->delay;
258 
259 	/* Current FW does not support min-max range for dwell time */
260 	pno->active_max_time = WMI_ACTIVE_MAX_CHANNEL_TIME;
261 	pno->passive_max_time = WMI_PASSIVE_MAX_CHANNEL_TIME;
262 	return ret;
263 }
264 
ath10k_vif_wow_set_wakeups(struct ath10k_vif * arvif,struct cfg80211_wowlan * wowlan)265 static int ath10k_vif_wow_set_wakeups(struct ath10k_vif *arvif,
266 				      struct cfg80211_wowlan *wowlan)
267 {
268 	int ret, i;
269 	unsigned long wow_mask = 0;
270 	struct ath10k *ar = arvif->ar;
271 	const struct cfg80211_pkt_pattern *patterns = wowlan->patterns;
272 	int pattern_id = 0;
273 
274 	/* Setup requested WOW features */
275 	switch (arvif->vdev_type) {
276 	case WMI_VDEV_TYPE_IBSS:
277 		__set_bit(WOW_BEACON_EVENT, &wow_mask);
278 		fallthrough;
279 	case WMI_VDEV_TYPE_AP:
280 		__set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
281 		__set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
282 		__set_bit(WOW_PROBE_REQ_WPS_IE_EVENT, &wow_mask);
283 		__set_bit(WOW_AUTH_REQ_EVENT, &wow_mask);
284 		__set_bit(WOW_ASSOC_REQ_EVENT, &wow_mask);
285 		__set_bit(WOW_HTT_EVENT, &wow_mask);
286 		__set_bit(WOW_RA_MATCH_EVENT, &wow_mask);
287 		break;
288 	case WMI_VDEV_TYPE_STA:
289 		if (wowlan->disconnect) {
290 			__set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
291 			__set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
292 			__set_bit(WOW_BMISS_EVENT, &wow_mask);
293 			__set_bit(WOW_CSA_IE_EVENT, &wow_mask);
294 		}
295 
296 		if (wowlan->magic_pkt)
297 			__set_bit(WOW_MAGIC_PKT_RECVD_EVENT, &wow_mask);
298 
299 		if (wowlan->nd_config) {
300 			struct wmi_pno_scan_req *pno;
301 			int ret;
302 
303 			pno = kzalloc(sizeof(*pno), GFP_KERNEL);
304 			if (!pno)
305 				return -ENOMEM;
306 
307 			ar->nlo_enabled = true;
308 
309 			ret = ath10k_wmi_pno_check(ar, arvif->vdev_id,
310 						   wowlan->nd_config, pno);
311 			if (!ret) {
312 				ath10k_wmi_wow_config_pno(ar, arvif->vdev_id, pno);
313 				__set_bit(WOW_NLO_DETECTED_EVENT, &wow_mask);
314 			}
315 
316 			kfree(pno);
317 		}
318 		break;
319 	default:
320 		break;
321 	}
322 
323 	for (i = 0; i < wowlan->n_patterns; i++) {
324 		u8 bitmask[WOW_MAX_PATTERN_SIZE] = {};
325 		u8 ath_pattern[WOW_MAX_PATTERN_SIZE] = {};
326 		u8 ath_bitmask[WOW_MAX_PATTERN_SIZE] = {};
327 		struct cfg80211_pkt_pattern new_pattern = {};
328 		struct cfg80211_pkt_pattern old_pattern = patterns[i];
329 		int j;
330 
331 		new_pattern.pattern = ath_pattern;
332 		new_pattern.mask = ath_bitmask;
333 		if (patterns[i].pattern_len > WOW_MAX_PATTERN_SIZE)
334 			continue;
335 		/* convert bytemask to bitmask */
336 		for (j = 0; j < patterns[i].pattern_len; j++)
337 			if (patterns[i].mask[j / 8] & BIT(j % 8))
338 				bitmask[j] = 0xff;
339 		old_pattern.mask = bitmask;
340 
341 		if (ar->wmi.rx_decap_mode == ATH10K_HW_TXRX_NATIVE_WIFI) {
342 			if (patterns[i].pkt_offset < ETH_HLEN) {
343 				ath10k_wow_convert_8023_to_80211(&new_pattern,
344 								 &old_pattern);
345 			} else {
346 				new_pattern = old_pattern;
347 				new_pattern.pkt_offset += WOW_HDR_LEN - ETH_HLEN;
348 			}
349 		}
350 
351 		if (WARN_ON(new_pattern.pattern_len > WOW_MAX_PATTERN_SIZE))
352 			return -EINVAL;
353 
354 		ret = ath10k_wmi_wow_add_pattern(ar, arvif->vdev_id,
355 						 pattern_id,
356 						 new_pattern.pattern,
357 						 new_pattern.mask,
358 						 new_pattern.pattern_len,
359 						 new_pattern.pkt_offset);
360 		if (ret) {
361 			ath10k_warn(ar, "failed to add pattern %i to vdev %i: %d\n",
362 				    pattern_id,
363 				    arvif->vdev_id, ret);
364 			return ret;
365 		}
366 
367 		pattern_id++;
368 		__set_bit(WOW_PATTERN_MATCH_EVENT, &wow_mask);
369 	}
370 
371 	for (i = 0; i < WOW_EVENT_MAX; i++) {
372 		if (!test_bit(i, &wow_mask))
373 			continue;
374 		ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 1);
375 		if (ret) {
376 			ath10k_warn(ar, "failed to enable wakeup event %s on vdev %i: %d\n",
377 				    wow_wakeup_event(i), arvif->vdev_id, ret);
378 			return ret;
379 		}
380 	}
381 
382 	return 0;
383 }
384 
ath10k_wow_set_wakeups(struct ath10k * ar,struct cfg80211_wowlan * wowlan)385 static int ath10k_wow_set_wakeups(struct ath10k *ar,
386 				  struct cfg80211_wowlan *wowlan)
387 {
388 	struct ath10k_vif *arvif;
389 	int ret;
390 
391 	lockdep_assert_held(&ar->conf_mutex);
392 
393 	list_for_each_entry(arvif, &ar->arvifs, list) {
394 		ret = ath10k_vif_wow_set_wakeups(arvif, wowlan);
395 		if (ret) {
396 			ath10k_warn(ar, "failed to set wow wakeups on vdev %i: %d\n",
397 				    arvif->vdev_id, ret);
398 			return ret;
399 		}
400 	}
401 
402 	return 0;
403 }
404 
ath10k_vif_wow_clean_nlo(struct ath10k_vif * arvif)405 static int ath10k_vif_wow_clean_nlo(struct ath10k_vif *arvif)
406 {
407 	int ret = 0;
408 	struct ath10k *ar = arvif->ar;
409 
410 	switch (arvif->vdev_type) {
411 	case WMI_VDEV_TYPE_STA:
412 		if (ar->nlo_enabled) {
413 			struct wmi_pno_scan_req *pno;
414 
415 			pno = kzalloc(sizeof(*pno), GFP_KERNEL);
416 			if (!pno)
417 				return -ENOMEM;
418 
419 			pno->enable = 0;
420 			ar->nlo_enabled = false;
421 			ret = ath10k_wmi_wow_config_pno(ar, arvif->vdev_id, pno);
422 			kfree(pno);
423 		}
424 		break;
425 	default:
426 		break;
427 	}
428 	return ret;
429 }
430 
ath10k_wow_nlo_cleanup(struct ath10k * ar)431 static int ath10k_wow_nlo_cleanup(struct ath10k *ar)
432 {
433 	struct ath10k_vif *arvif;
434 	int ret = 0;
435 
436 	lockdep_assert_held(&ar->conf_mutex);
437 
438 	list_for_each_entry(arvif, &ar->arvifs, list) {
439 		ret = ath10k_vif_wow_clean_nlo(arvif);
440 		if (ret) {
441 			ath10k_warn(ar, "failed to clean nlo settings on vdev %i: %d\n",
442 				    arvif->vdev_id, ret);
443 			return ret;
444 		}
445 	}
446 
447 	return 0;
448 }
449 
ath10k_wow_enable(struct ath10k * ar)450 static int ath10k_wow_enable(struct ath10k *ar)
451 {
452 	int ret;
453 
454 	lockdep_assert_held(&ar->conf_mutex);
455 
456 	reinit_completion(&ar->target_suspend);
457 
458 	ret = ath10k_wmi_wow_enable(ar);
459 	if (ret) {
460 		ath10k_warn(ar, "failed to issue wow enable: %d\n", ret);
461 		return ret;
462 	}
463 
464 	ret = wait_for_completion_timeout(&ar->target_suspend, 3 * HZ);
465 	if (ret == 0) {
466 		ath10k_warn(ar, "timed out while waiting for suspend completion\n");
467 		return -ETIMEDOUT;
468 	}
469 
470 	return 0;
471 }
472 
ath10k_wow_wakeup(struct ath10k * ar)473 static int ath10k_wow_wakeup(struct ath10k *ar)
474 {
475 	int ret;
476 
477 	lockdep_assert_held(&ar->conf_mutex);
478 
479 	reinit_completion(&ar->wow.wakeup_completed);
480 
481 	ret = ath10k_wmi_wow_host_wakeup_ind(ar);
482 	if (ret) {
483 		ath10k_warn(ar, "failed to send wow wakeup indication: %d\n",
484 			    ret);
485 		return ret;
486 	}
487 
488 	ret = wait_for_completion_timeout(&ar->wow.wakeup_completed, 3 * HZ);
489 	if (ret == 0) {
490 		ath10k_warn(ar, "timed out while waiting for wow wakeup completion\n");
491 		return -ETIMEDOUT;
492 	}
493 
494 	return 0;
495 }
496 
ath10k_wow_op_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan)497 int ath10k_wow_op_suspend(struct ieee80211_hw *hw,
498 			  struct cfg80211_wowlan *wowlan)
499 {
500 	struct ath10k *ar = hw->priv;
501 	int ret;
502 
503 	mutex_lock(&ar->conf_mutex);
504 
505 	if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
506 			      ar->running_fw->fw_file.fw_features))) {
507 		ret = 1;
508 		goto exit;
509 	}
510 
511 	ret =  ath10k_wow_cleanup(ar);
512 	if (ret) {
513 		ath10k_warn(ar, "failed to clear wow wakeup events: %d\n",
514 			    ret);
515 		goto exit;
516 	}
517 
518 	ret = ath10k_wow_set_wakeups(ar, wowlan);
519 	if (ret) {
520 		ath10k_warn(ar, "failed to set wow wakeup events: %d\n",
521 			    ret);
522 		goto cleanup;
523 	}
524 
525 	ath10k_mac_wait_tx_complete(ar);
526 
527 	ret = ath10k_wow_enable(ar);
528 	if (ret) {
529 		ath10k_warn(ar, "failed to start wow: %d\n", ret);
530 		goto cleanup;
531 	}
532 
533 	ret = ath10k_hif_suspend(ar);
534 	if (ret) {
535 		ath10k_warn(ar, "failed to suspend hif: %d\n", ret);
536 		goto wakeup;
537 	}
538 
539 	goto exit;
540 
541 wakeup:
542 	ath10k_wow_wakeup(ar);
543 
544 cleanup:
545 	ath10k_wow_cleanup(ar);
546 
547 exit:
548 	mutex_unlock(&ar->conf_mutex);
549 	return ret ? 1 : 0;
550 }
551 
ath10k_wow_op_set_wakeup(struct ieee80211_hw * hw,bool enabled)552 void ath10k_wow_op_set_wakeup(struct ieee80211_hw *hw, bool enabled)
553 {
554 	struct ath10k *ar = hw->priv;
555 
556 	mutex_lock(&ar->conf_mutex);
557 	if (test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
558 		     ar->running_fw->fw_file.fw_features)) {
559 		device_set_wakeup_enable(ar->dev, enabled);
560 	}
561 	mutex_unlock(&ar->conf_mutex);
562 }
563 
ath10k_wow_op_resume(struct ieee80211_hw * hw)564 int ath10k_wow_op_resume(struct ieee80211_hw *hw)
565 {
566 	struct ath10k *ar = hw->priv;
567 	int ret;
568 
569 	mutex_lock(&ar->conf_mutex);
570 
571 	if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
572 			      ar->running_fw->fw_file.fw_features))) {
573 		ret = 1;
574 		goto exit;
575 	}
576 
577 	ret = ath10k_hif_resume(ar);
578 	if (ret) {
579 		ath10k_warn(ar, "failed to resume hif: %d\n", ret);
580 		goto exit;
581 	}
582 
583 	ret = ath10k_wow_wakeup(ar);
584 	if (ret)
585 		ath10k_warn(ar, "failed to wakeup from wow: %d\n", ret);
586 
587 	ret = ath10k_wow_nlo_cleanup(ar);
588 	if (ret)
589 		ath10k_warn(ar, "failed to cleanup nlo: %d\n", ret);
590 
591 exit:
592 	if (ret) {
593 		switch (ar->state) {
594 		case ATH10K_STATE_ON:
595 			ar->state = ATH10K_STATE_RESTARTING;
596 			ret = 1;
597 			break;
598 		case ATH10K_STATE_OFF:
599 		case ATH10K_STATE_RESTARTING:
600 		case ATH10K_STATE_RESTARTED:
601 		case ATH10K_STATE_UTF:
602 		case ATH10K_STATE_WEDGED:
603 			ath10k_warn(ar, "encountered unexpected device state %d on resume, cannot recover\n",
604 				    ar->state);
605 			ret = -EIO;
606 			break;
607 		}
608 	}
609 
610 	mutex_unlock(&ar->conf_mutex);
611 	return ret;
612 }
613 
ath10k_wow_init(struct ath10k * ar)614 int ath10k_wow_init(struct ath10k *ar)
615 {
616 	if (!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
617 		      ar->running_fw->fw_file.fw_features))
618 		return 0;
619 
620 	if (WARN_ON(!test_bit(WMI_SERVICE_WOW, ar->wmi.svc_map)))
621 		return -EINVAL;
622 
623 	ar->wow.wowlan_support = ath10k_wowlan_support;
624 
625 	if (ar->wmi.rx_decap_mode == ATH10K_HW_TXRX_NATIVE_WIFI) {
626 		ar->wow.wowlan_support.pattern_max_len -= WOW_MAX_REDUCE;
627 		ar->wow.wowlan_support.max_pkt_offset -= WOW_MAX_REDUCE;
628 	}
629 
630 	if (test_bit(WMI_SERVICE_NLO, ar->wmi.svc_map)) {
631 		ar->wow.wowlan_support.flags |= WIPHY_WOWLAN_NET_DETECT;
632 		ar->wow.wowlan_support.max_nd_match_sets = WMI_PNO_MAX_SUPP_NETWORKS;
633 	}
634 
635 	ar->wow.wowlan_support.n_patterns = ar->wow.max_num_patterns;
636 	ar->hw->wiphy->wowlan = &ar->wow.wowlan_support;
637 
638 	device_set_wakeup_capable(ar->dev, true);
639 
640 	return 0;
641 }
642