drivers/net/wireless/ath/ath10k/wow.c

   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  * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
   6  */
   7
   8 #include "mac.h"
   9
  10 #include <net/mac80211.h>
  11 #include "hif.h"
  12 #include "core.h"
  13 #include "debug.h"
  14 #include "wmi.h"
  15 #include "wmi-ops.h"
  16
  17 static const struct wiphy_wowlan_support ath10k_wowlan_support = {
  18         .flags = WIPHY_WOWLAN_DISCONNECT |
  19                  WIPHY_WOWLAN_MAGIC_PKT,
  20         .pattern_min_len = WOW_MIN_PATTERN_SIZE,
  21         .pattern_max_len = WOW_MAX_PATTERN_SIZE,
  22         .max_pkt_offset = WOW_MAX_PKT_OFFSET,
  23 };
  24
  25 static int ath10k_wow_vif_cleanup(struct ath10k_vif *arvif)
  26 {
  27         struct ath10k *ar = arvif->ar;
  28         int i, ret;
  29
  30         for (i = 0; i < WOW_EVENT_MAX; i++) {
  31                 ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 0);
  32                 if (ret) {
  33                         ath10k_warn(ar, "failed to issue wow wakeup for event %s on vdev %i: %d\n",
  34                                     wow_wakeup_event(i), arvif->vdev_id, ret);
  35                         return ret;
  36                 }
  37         }
  38
  39         for (i = 0; i < ar->wow.max_num_patterns; i++) {
  40                 ret = ath10k_wmi_wow_del_pattern(ar, arvif->vdev_id, i);
  41                 if (ret) {
  42                         ath10k_warn(ar, "failed to delete wow pattern %d for vdev %i: %d\n",
  43                                     i, arvif->vdev_id, ret);
  44                         return ret;
  45                 }
  46         }
  47
  48         return 0;
  49 }
  50
  51 static int ath10k_wow_cleanup(struct ath10k *ar)
  52 {
  53         struct ath10k_vif *arvif;
  54         int ret;
  55
  56         lockdep_assert_held(&ar->conf_mutex);
  57
  58         list_for_each_entry(arvif, &ar->arvifs, list) {
  59                 ret = ath10k_wow_vif_cleanup(arvif);
  60                 if (ret) {
  61                         ath10k_warn(ar, "failed to clean wow wakeups on vdev %i: %d\n",
  62                                     arvif->vdev_id, ret);
  63                         return ret;
  64                 }
  65         }
  66
  67         return 0;
  68 }
  69
  70 /*
  71  * Convert a 802.3 format to a 802.11 format.
  72  *         +------------+-----------+--------+----------------+
  73  * 802.3:  |dest mac(6B)|src mac(6B)|type(2B)|     body...    |
  74  *         +------------+-----------+--------+----------------+
  75  *                |__         |_______    |____________  |________
  76  *                   |                |                |          |
  77  *         +--+------------+----+-----------+---------------+-----------+
  78  * 802.11: |4B|dest mac(6B)| 6B |src mac(6B)|  8B  |type(2B)|  body...  |
  79  *         +--+------------+----+-----------+---------------+-----------+
  80  */
  81 static void ath10k_wow_convert_8023_to_80211(struct cfg80211_pkt_pattern *new,
  82                                              const struct cfg80211_pkt_pattern *old)
  83 {
  84         u8 hdr_8023_pattern[ETH_HLEN] = {};
  85         u8 hdr_8023_bit_mask[ETH_HLEN] = {};
  86         u8 hdr_80211_pattern[WOW_HDR_LEN] = {};
  87         u8 hdr_80211_bit_mask[WOW_HDR_LEN] = {};
  88
  89         int total_len = old->pkt_offset + old->pattern_len;
  90         int hdr_80211_end_offset;
  91
  92         struct ieee80211_hdr_3addr *new_hdr_pattern =
  93                 (struct ieee80211_hdr_3addr *)hdr_80211_pattern;
  94         struct ieee80211_hdr_3addr *new_hdr_mask =
  95                 (struct ieee80211_hdr_3addr *)hdr_80211_bit_mask;
  96         struct ethhdr *old_hdr_pattern = (struct ethhdr *)hdr_8023_pattern;
  97         struct ethhdr *old_hdr_mask = (struct ethhdr *)hdr_8023_bit_mask;
  98         int hdr_len = sizeof(*new_hdr_pattern);
  99
 100         struct rfc1042_hdr *new_rfc_pattern =
 101                 (struct rfc1042_hdr *)(hdr_80211_pattern + hdr_len);
 102         struct rfc1042_hdr *new_rfc_mask =
 103                 (struct rfc1042_hdr *)(hdr_80211_bit_mask + hdr_len);
 104         int rfc_len = sizeof(*new_rfc_pattern);
 105
 106         memcpy(hdr_8023_pattern + old->pkt_offset,
 107                old->pattern, ETH_HLEN - old->pkt_offset);
 108         memcpy(hdr_8023_bit_mask + old->pkt_offset,
 109                old->mask, ETH_HLEN - old->pkt_offset);
 110
 111         /* Copy destination address */
 112         memcpy(new_hdr_pattern->addr1, old_hdr_pattern->h_dest, ETH_ALEN);
 113         memcpy(new_hdr_mask->addr1, old_hdr_mask->h_dest, ETH_ALEN);
 114
 115         /* Copy source address */
 116         memcpy(new_hdr_pattern->addr3, old_hdr_pattern->h_source, ETH_ALEN);
 117         memcpy(new_hdr_mask->addr3, old_hdr_mask->h_source, ETH_ALEN);
 118
 119         /* Copy logic link type */
 120         memcpy(&new_rfc_pattern->snap_type,
 121                &old_hdr_pattern->h_proto,
 122                sizeof(old_hdr_pattern->h_proto));
 123         memcpy(&new_rfc_mask->snap_type,
 124                &old_hdr_mask->h_proto,
 125                sizeof(old_hdr_mask->h_proto));
 126
 127         /* Calculate new pkt_offset */
 128         if (old->pkt_offset < ETH_ALEN)
 129                 new->pkt_offset = old->pkt_offset +
 130                         offsetof(struct ieee80211_hdr_3addr, addr1);
 131         else if (old->pkt_offset < offsetof(struct ethhdr, h_proto))
 132                 new->pkt_offset = old->pkt_offset +
 133                         offsetof(struct ieee80211_hdr_3addr, addr3) -
 134                         offsetof(struct ethhdr, h_source);
 135         else
 136                 new->pkt_offset = old->pkt_offset + hdr_len + rfc_len - ETH_HLEN;
 137
 138         /* Calculate new hdr end offset */
 139         if (total_len > ETH_HLEN)
 140                 hdr_80211_end_offset = hdr_len + rfc_len;
 141         else if (total_len > offsetof(struct ethhdr, h_proto))
 142                 hdr_80211_end_offset = hdr_len + rfc_len + total_len - ETH_HLEN;
 143         else if (total_len > ETH_ALEN)
 144                 hdr_80211_end_offset = total_len - ETH_ALEN +
 145                         offsetof(struct ieee80211_hdr_3addr, addr3);
 146         else
 147                 hdr_80211_end_offset = total_len +
 148                         offsetof(struct ieee80211_hdr_3addr, addr1);
 149
 150         new->pattern_len = hdr_80211_end_offset - new->pkt_offset;
 151
 152         memcpy((u8 *)new->pattern,
 153                hdr_80211_pattern + new->pkt_offset,
 154                new->pattern_len);
 155         memcpy((u8 *)new->mask,
 156                hdr_80211_bit_mask + new->pkt_offset,
 157                new->pattern_len);
 158
 159         if (total_len > ETH_HLEN) {
 160                 /* Copy frame body */
 161                 memcpy((u8 *)new->pattern + new->pattern_len,
 162                        (void *)old->pattern + ETH_HLEN - old->pkt_offset,
 163                        total_len - ETH_HLEN);
 164                 memcpy((u8 *)new->mask + new->pattern_len,
 165                        (void *)old->mask + ETH_HLEN - old->pkt_offset,
 166                        total_len - ETH_HLEN);
 167
 168                 new->pattern_len += total_len - ETH_HLEN;
 169         }
 170 }
 171
 172 static int ath10k_wmi_pno_check(struct ath10k *ar, u32 vdev_id,
 173                                 struct cfg80211_sched_scan_request *nd_config,
 174                                 struct wmi_pno_scan_req *pno)
 175 {
 176         int i, j, ret = 0;
 177         u8 ssid_len;
 178
 179         pno->enable = 1;
 180         pno->vdev_id = vdev_id;
 181         pno->uc_networks_count = nd_config->n_match_sets;
 182
 183         if (!pno->uc_networks_count ||
 184             pno->uc_networks_count > WMI_PNO_MAX_SUPP_NETWORKS)
 185                 return -EINVAL;
 186
 187         if (nd_config->n_channels > WMI_PNO_MAX_NETW_CHANNELS_EX)
 188                 return -EINVAL;
 189
 190         /* Filling per profile  params */
 191         for (i = 0; i < pno->uc_networks_count; i++) {
 192                 ssid_len = nd_config->match_sets[i].ssid.ssid_len;
 193
 194                 if (ssid_len == 0 || ssid_len > 32)
 195                         return -EINVAL;
 196
 197                 pno->a_networks[i].ssid.ssid_len = __cpu_to_le32(ssid_len);
 198
 199                 memcpy(pno->a_networks[i].ssid.ssid,
 200                        nd_config->match_sets[i].ssid.ssid,
 201                        nd_config->match_sets[i].ssid.ssid_len);
 202                 pno->a_networks[i].authentication = 0;
 203                 pno->a_networks[i].encryption     = 0;
 204                 pno->a_networks[i].bcast_nw_type  = 0;
 205
 206                 /*Copying list of valid channel into request */
 207                 pno->a_networks[i].channel_count = nd_config->n_channels;
 208                 pno->a_networks[i].rssi_threshold = nd_config->match_sets[i].rssi_thold;
 209
 210                 for (j = 0; j < nd_config->n_channels; j++) {
 211                         pno->a_networks[i].channels[j] =
 212                                         nd_config->channels[j]->center_freq;
 213                 }
 214         }
 215
 216         /* set scan to passive if no SSIDs are specified in the request */
 217         if (nd_config->n_ssids == 0)
 218                 pno->do_passive_scan = true;
 219         else
 220                 pno->do_passive_scan = false;
 221
 222         for (i = 0; i < nd_config->n_ssids; i++) {
 223                 j = 0;
 224                 while (j < pno->uc_networks_count) {
 225                         if (__le32_to_cpu(pno->a_networks[j].ssid.ssid_len) ==
 226                                 nd_config->ssids[i].ssid_len &&
 227                         (memcmp(pno->a_networks[j].ssid.ssid,
 228                                 nd_config->ssids[i].ssid,
 229                                 __le32_to_cpu(pno->a_networks[j].ssid.ssid_len)) == 0)) {
 230                                 pno->a_networks[j].bcast_nw_type = BCAST_HIDDEN;
 231                                 break;
 232                         }
 233                         j++;
 234                 }
 235         }
 236
 237         if (nd_config->n_scan_plans == 2) {
 238                 pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
 239                 pno->fast_scan_max_cycles = nd_config->scan_plans[0].iterations;
 240                 pno->slow_scan_period =
 241                         nd_config->scan_plans[1].interval * MSEC_PER_SEC;
 242         } else if (nd_config->n_scan_plans == 1) {
 243                 pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
 244                 pno->fast_scan_max_cycles = 1;
 245                 pno->slow_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
 246         } else {
 247                 ath10k_warn(ar, "Invalid number of scan plans %d !!",
 248                             nd_config->n_scan_plans);
 249         }
 250
 251         if (nd_config->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
 252                 /* enable mac randomization */
 253                 pno->enable_pno_scan_randomization = 1;
 254                 memcpy(pno->mac_addr, nd_config->mac_addr, ETH_ALEN);
 255                 memcpy(pno->mac_addr_mask, nd_config->mac_addr_mask, ETH_ALEN);
 256         }
 257
 258         pno->delay_start_time = nd_config->delay;
 259
 260         /* Current FW does not support min-max range for dwell time */
 261         pno->active_max_time = WMI_ACTIVE_MAX_CHANNEL_TIME;
 262         pno->passive_max_time = WMI_PASSIVE_MAX_CHANNEL_TIME;
 263         return ret;
 264 }
 265
 266 static int ath10k_vif_wow_set_wakeups(struct ath10k_vif *arvif,
 267                                       struct cfg80211_wowlan *wowlan)
 268 {
 269         int ret, i;
 270         unsigned long wow_mask = 0;
 271         struct ath10k *ar = arvif->ar;
 272         const struct cfg80211_pkt_pattern *patterns = wowlan->patterns;
 273         int pattern_id = 0;
 274
 275         /* Setup requested WOW features */
 276         switch (arvif->vdev_type) {
 277         case WMI_VDEV_TYPE_IBSS:
 278                 __set_bit(WOW_BEACON_EVENT, &wow_mask);
 279                 fallthrough;
 280         case WMI_VDEV_TYPE_AP:
 281                 __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
 282                 __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
 283                 __set_bit(WOW_PROBE_REQ_WPS_IE_EVENT, &wow_mask);
 284                 __set_bit(WOW_AUTH_REQ_EVENT, &wow_mask);
 285                 __set_bit(WOW_ASSOC_REQ_EVENT, &wow_mask);
 286                 __set_bit(WOW_HTT_EVENT, &wow_mask);
 287                 __set_bit(WOW_RA_MATCH_EVENT, &wow_mask);
 288                 break;
 289         case WMI_VDEV_TYPE_STA:
 290                 if (wowlan->disconnect) {
 291                         __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
 292                         __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
 293                         __set_bit(WOW_BMISS_EVENT, &wow_mask);
 294                         __set_bit(WOW_CSA_IE_EVENT, &wow_mask);
 295                 }
 296
 297                 if (wowlan->magic_pkt)
 298                         __set_bit(WOW_MAGIC_PKT_RECVD_EVENT, &wow_mask);
 299
 300                 if (wowlan->nd_config) {
 301                         struct wmi_pno_scan_req *pno;
 302                         int ret;
 303
 304                         pno = kzalloc(sizeof(*pno), GFP_KERNEL);
 305                         if (!pno)
 306                                 return -ENOMEM;
 307
 308                         ar->nlo_enabled = true;
 309
 310                         ret = ath10k_wmi_pno_check(ar, arvif->vdev_id,
 311                                                    wowlan->nd_config, pno);
 312                         if (!ret) {
 313                                 ath10k_wmi_wow_config_pno(ar, arvif->vdev_id, pno);
 314                                 __set_bit(WOW_NLO_DETECTED_EVENT, &wow_mask);
 315                         }
 316
 317                         kfree(pno);
 318                 }
 319                 break;
 320         default:
 321                 break;
 322         }
 323
 324         for (i = 0; i < wowlan->n_patterns; i++) {
 325                 u8 bitmask[WOW_MAX_PATTERN_SIZE] = {};
 326                 u8 ath_pattern[WOW_MAX_PATTERN_SIZE] = {};
 327                 u8 ath_bitmask[WOW_MAX_PATTERN_SIZE] = {};
 328                 struct cfg80211_pkt_pattern new_pattern = {};
 329                 struct cfg80211_pkt_pattern old_pattern = patterns[i];
 330                 int j;
 331
 332                 new_pattern.pattern = ath_pattern;
 333                 new_pattern.mask = ath_bitmask;
 334                 if (patterns[i].pattern_len > WOW_MAX_PATTERN_SIZE)
 335                         continue;
 336                 /* convert bytemask to bitmask */
 337                 for (j = 0; j < patterns[i].pattern_len; j++)
 338                         if (patterns[i].mask[j / 8] & BIT(j % 8))
 339                                 bitmask[j] = 0xff;
 340                 old_pattern.mask = bitmask;
 341
 342                 if (ar->wmi.rx_decap_mode == ATH10K_HW_TXRX_NATIVE_WIFI) {
 343                         if (patterns[i].pkt_offset < ETH_HLEN) {
 344                                 ath10k_wow_convert_8023_to_80211(&new_pattern,
 345                                                                  &old_pattern);
 346                         } else {
 347                                 new_pattern = old_pattern;
 348                                 new_pattern.pkt_offset += WOW_HDR_LEN - ETH_HLEN;
 349                         }
 350                 }
 351
 352                 if (WARN_ON(new_pattern.pattern_len > WOW_MAX_PATTERN_SIZE))
 353                         return -EINVAL;
 354
 355                 ret = ath10k_wmi_wow_add_pattern(ar, arvif->vdev_id,
 356                                                  pattern_id,
 357                                                  new_pattern.pattern,
 358                                                  new_pattern.mask,
 359                                                  new_pattern.pattern_len,
 360                                                  new_pattern.pkt_offset);
 361                 if (ret) {
 362                         ath10k_warn(ar, "failed to add pattern %i to vdev %i: %d\n",
 363                                     pattern_id,
 364                                     arvif->vdev_id, ret);
 365                         return ret;
 366                 }
 367
 368                 pattern_id++;
 369                 __set_bit(WOW_PATTERN_MATCH_EVENT, &wow_mask);
 370         }
 371
 372         for (i = 0; i < WOW_EVENT_MAX; i++) {
 373                 if (!test_bit(i, &wow_mask))
 374                         continue;
 375                 ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 1);
 376                 if (ret) {
 377                         ath10k_warn(ar, "failed to enable wakeup event %s on vdev %i: %d\n",
 378                                     wow_wakeup_event(i), arvif->vdev_id, ret);
 379                         return ret;
 380                 }
 381         }
 382
 383         return 0;
 384 }
 385
 386 static int ath10k_wow_set_wakeups(struct ath10k *ar,
 387                                   struct cfg80211_wowlan *wowlan)
 388 {
 389         struct ath10k_vif *arvif;
 390         int ret;
 391
 392         lockdep_assert_held(&ar->conf_mutex);
 393
 394         list_for_each_entry(arvif, &ar->arvifs, list) {
 395                 ret = ath10k_vif_wow_set_wakeups(arvif, wowlan);
 396                 if (ret) {
 397                         ath10k_warn(ar, "failed to set wow wakeups on vdev %i: %d\n",
 398                                     arvif->vdev_id, ret);
 399                         return ret;
 400                 }
 401         }
 402
 403         return 0;
 404 }
 405
 406 static int ath10k_vif_wow_clean_nlo(struct ath10k_vif *arvif)
 407 {
 408         int ret = 0;
 409         struct ath10k *ar = arvif->ar;
 410
 411         switch (arvif->vdev_type) {
 412         case WMI_VDEV_TYPE_STA:
 413                 if (ar->nlo_enabled) {
 414                         struct wmi_pno_scan_req *pno;
 415
 416                         pno = kzalloc(sizeof(*pno), GFP_KERNEL);
 417                         if (!pno)
 418                                 return -ENOMEM;
 419
 420                         pno->enable = 0;
 421                         ar->nlo_enabled = false;
 422                         ret = ath10k_wmi_wow_config_pno(ar, arvif->vdev_id, pno);
 423                         kfree(pno);
 424                 }
 425                 break;
 426         default:
 427                 break;
 428         }
 429         return ret;
 430 }
 431
 432 static int ath10k_wow_nlo_cleanup(struct ath10k *ar)
 433 {
 434         struct ath10k_vif *arvif;
 435         int ret = 0;
 436
 437         lockdep_assert_held(&ar->conf_mutex);
 438
 439         list_for_each_entry(arvif, &ar->arvifs, list) {
 440                 ret = ath10k_vif_wow_clean_nlo(arvif);
 441                 if (ret) {
 442                         ath10k_warn(ar, "failed to clean nlo settings on vdev %i: %d\n",
 443                                     arvif->vdev_id, ret);
 444                         return ret;
 445                 }
 446         }
 447
 448         return 0;
 449 }
 450
 451 static int ath10k_wow_enable(struct ath10k *ar)
 452 {
 453         int ret;
 454
 455         lockdep_assert_held(&ar->conf_mutex);
 456
 457         reinit_completion(&ar->target_suspend);
 458
 459         ret = ath10k_wmi_wow_enable(ar);
 460         if (ret) {
 461                 ath10k_warn(ar, "failed to issue wow enable: %d\n", ret);
 462                 return ret;
 463         }
 464
 465         ret = wait_for_completion_timeout(&ar->target_suspend, 3 * HZ);
 466         if (ret == 0) {
 467                 ath10k_warn(ar, "timed out while waiting for suspend completion\n");
 468                 return -ETIMEDOUT;
 469         }
 470
 471         return 0;
 472 }
 473
 474 static int ath10k_wow_wakeup(struct ath10k *ar)
 475 {
 476         int ret;
 477
 478         lockdep_assert_held(&ar->conf_mutex);
 479
 480         reinit_completion(&ar->wow.wakeup_completed);
 481
 482         ret = ath10k_wmi_wow_host_wakeup_ind(ar);
 483         if (ret) {
 484                 ath10k_warn(ar, "failed to send wow wakeup indication: %d\n",
 485                             ret);
 486                 return ret;
 487         }
 488
 489         ret = wait_for_completion_timeout(&ar->wow.wakeup_completed, 3 * HZ);
 490         if (ret == 0) {
 491                 ath10k_warn(ar, "timed out while waiting for wow wakeup completion\n");
 492                 return -ETIMEDOUT;
 493         }
 494
 495         return 0;
 496 }
 497
 498 int ath10k_wow_op_suspend(struct ieee80211_hw *hw,
 499                           struct cfg80211_wowlan *wowlan)
 500 {
 501         struct ath10k *ar = hw->priv;
 502         int ret;
 503
 504         mutex_lock(&ar->conf_mutex);
 505
 506         if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
 507                               ar->running_fw->fw_file.fw_features))) {
 508                 ret = 1;
 509                 goto exit;
 510         }
 511
 512         ret =  ath10k_wow_cleanup(ar);
 513         if (ret) {
 514                 ath10k_warn(ar, "failed to clear wow wakeup events: %d\n",
 515                             ret);
 516                 goto exit;
 517         }
 518
 519         ret = ath10k_wow_set_wakeups(ar, wowlan);
 520         if (ret) {
 521                 ath10k_warn(ar, "failed to set wow wakeup events: %d\n",
 522                             ret);
 523                 goto cleanup;
 524         }
 525
 526         ath10k_mac_wait_tx_complete(ar);
 527
 528         ret = ath10k_wow_enable(ar);
 529         if (ret) {
 530                 ath10k_warn(ar, "failed to start wow: %d\n", ret);
 531                 goto cleanup;
 532         }
 533
 534         ret = ath10k_hif_suspend(ar);
 535         if (ret) {
 536                 ath10k_warn(ar, "failed to suspend hif: %d\n", ret);
 537                 goto wakeup;
 538         }
 539
 540         goto exit;
 541
 542 wakeup:
 543         ath10k_wow_wakeup(ar);
 544
 545 cleanup:
 546         ath10k_wow_cleanup(ar);
 547
 548 exit:
 549         mutex_unlock(&ar->conf_mutex);
 550         return ret ? 1 : 0;
 551 }
 552
 553 void ath10k_wow_op_set_wakeup(struct ieee80211_hw *hw, bool enabled)
 554 {
 555         struct ath10k *ar = hw->priv;
 556
 557         mutex_lock(&ar->conf_mutex);
 558         if (test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
 559                      ar->running_fw->fw_file.fw_features)) {
 560                 device_set_wakeup_enable(ar->dev, enabled);
 561         }
 562         mutex_unlock(&ar->conf_mutex);
 563 }
 564
 565 int ath10k_wow_op_resume(struct ieee80211_hw *hw)
 566 {
 567         struct ath10k *ar = hw->priv;
 568         int ret;
 569
 570         mutex_lock(&ar->conf_mutex);
 571
 572         if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
 573                               ar->running_fw->fw_file.fw_features))) {
 574                 ret = 1;
 575                 goto exit;
 576         }
 577
 578         ret = ath10k_hif_resume(ar);
 579         if (ret) {
 580                 ath10k_warn(ar, "failed to resume hif: %d\n", ret);
 581                 goto exit;
 582         }
 583
 584         ret = ath10k_wow_wakeup(ar);
 585         if (ret)
 586                 ath10k_warn(ar, "failed to wakeup from wow: %d\n", ret);
 587
 588         ret = ath10k_wow_nlo_cleanup(ar);
 589         if (ret)
 590                 ath10k_warn(ar, "failed to cleanup nlo: %d\n", ret);
 591
 592 exit:
 593         if (ret) {
 594                 switch (ar->state) {
 595                 case ATH10K_STATE_ON:
 596                         ar->state = ATH10K_STATE_RESTARTING;
 597                         ret = 1;
 598                         break;
 599                 case ATH10K_STATE_OFF:
 600                 case ATH10K_STATE_RESTARTING:
 601                 case ATH10K_STATE_RESTARTED:
 602                 case ATH10K_STATE_UTF:
 603                 case ATH10K_STATE_WEDGED:
 604                         ath10k_warn(ar, "encountered unexpected device state %d on resume, cannot recover\n",
 605                                     ar->state);
 606                         ret = -EIO;
 607                         break;
 608                 }
 609         }
 610
 611         mutex_unlock(&ar->conf_mutex);
 612         return ret;
 613 }
 614
 615 int ath10k_wow_init(struct ath10k *ar)
 616 {
 617         if (!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
 618                       ar->running_fw->fw_file.fw_features))
 619                 return 0;
 620
 621         if (WARN_ON(!test_bit(WMI_SERVICE_WOW, ar->wmi.svc_map)))
 622                 return -EINVAL;
 623
 624         ar->wow.wowlan_support = ath10k_wowlan_support;
 625
 626         if (ar->wmi.rx_decap_mode == ATH10K_HW_TXRX_NATIVE_WIFI) {
 627                 ar->wow.wowlan_support.pattern_max_len -= WOW_MAX_REDUCE;
 628                 ar->wow.wowlan_support.max_pkt_offset -= WOW_MAX_REDUCE;
 629         }
 630
 631         if (test_bit(WMI_SERVICE_NLO, ar->wmi.svc_map)) {
 632                 ar->wow.wowlan_support.flags |= WIPHY_WOWLAN_NET_DETECT;
 633                 ar->wow.wowlan_support.max_nd_match_sets = WMI_PNO_MAX_SUPP_NETWORKS;
 634         }
 635
 636         ar->wow.wowlan_support.n_patterns = ar->wow.max_num_patterns;
 637         ar->hw->wiphy->wowlan = &ar->wow.wowlan_support;
 638
 639         device_set_wakeup_capable(ar->dev, true);
 640
 641         return 0;
 642 }