drivers/net/wireless/intel/iwlwifi/mvm/d3.c

   1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2 /*
   3  * Copyright (C) 2012-2014, 2018-2021 Intel Corporation
   4  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
   5  * Copyright (C) 2016-2017 Intel Deutschland GmbH
   6  */
   7 #include <linux/etherdevice.h>
   8 #include <linux/ip.h>
   9 #include <linux/fs.h>
  10 #include <net/cfg80211.h>
  11 #include <net/ipv6.h>
  12 #include <net/tcp.h>
  13 #include <net/addrconf.h>
  14 #include "iwl-modparams.h"
  15 #include "fw-api.h"
  16 #include "mvm.h"
  17 #include "fw/img.h"
  18
  19 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
  20                             struct ieee80211_vif *vif,
  21                             struct cfg80211_gtk_rekey_data *data)
  22 {
  23         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
  24         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  25
  26         mutex_lock(&mvm->mutex);
  27
  28         mvmvif->rekey_data.kek_len = data->kek_len;
  29         mvmvif->rekey_data.kck_len = data->kck_len;
  30         memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len);
  31         memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len);
  32         mvmvif->rekey_data.akm = data->akm & 0xFF;
  33         mvmvif->rekey_data.replay_ctr =
  34                 cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr));
  35         mvmvif->rekey_data.valid = true;
  36
  37         mutex_unlock(&mvm->mutex);
  38 }
  39
  40 #if IS_ENABLED(CONFIG_IPV6)
  41 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
  42                               struct ieee80211_vif *vif,
  43                               struct inet6_dev *idev)
  44 {
  45         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  46         struct inet6_ifaddr *ifa;
  47         int idx = 0;
  48
  49         memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
  50
  51         read_lock_bh(&idev->lock);
  52         list_for_each_entry(ifa, &idev->addr_list, if_list) {
  53                 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
  54                 if (ifa->flags & IFA_F_TENTATIVE)
  55                         __set_bit(idx, mvmvif->tentative_addrs);
  56                 idx++;
  57                 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
  58                         break;
  59         }
  60         read_unlock_bh(&idev->lock);
  61
  62         mvmvif->num_target_ipv6_addrs = idx;
  63 }
  64 #endif
  65
  66 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
  67                                      struct ieee80211_vif *vif, int idx)
  68 {
  69         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  70
  71         mvmvif->tx_key_idx = idx;
  72 }
  73
  74 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
  75 {
  76         int i;
  77
  78         for (i = 0; i < IWL_P1K_SIZE; i++)
  79                 out[i] = cpu_to_le16(p1k[i]);
  80 }
  81
  82 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
  83                                      struct iwl_mvm_key_pn *ptk_pn,
  84                                      struct ieee80211_key_seq *seq,
  85                                      int tid, int queues)
  86 {
  87         const u8 *ret = seq->ccmp.pn;
  88         int i;
  89
  90         /* get the PN from mac80211, used on the default queue */
  91         ieee80211_get_key_rx_seq(key, tid, seq);
  92
  93         /* and use the internal data for the other queues */
  94         for (i = 1; i < queues; i++) {
  95                 const u8 *tmp = ptk_pn->q[i].pn[tid];
  96
  97                 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
  98                         ret = tmp;
  99         }
 100
 101         return ret;
 102 }
 103
 104 struct wowlan_key_data {
 105         struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc;
 106         struct iwl_wowlan_tkip_params_cmd *tkip;
 107         struct iwl_wowlan_kek_kck_material_cmd_v3 *kek_kck_cmd;
 108         bool error, use_rsc_tsc, use_tkip, configure_keys;
 109         int wep_key_idx;
 110 };
 111
 112 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
 113                                         struct ieee80211_vif *vif,
 114                                         struct ieee80211_sta *sta,
 115                                         struct ieee80211_key_conf *key,
 116                                         void *_data)
 117 {
 118         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 119         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 120         struct wowlan_key_data *data = _data;
 121         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
 122         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 123         struct iwl_p1k_cache *rx_p1ks;
 124         u8 *rx_mic_key;
 125         struct ieee80211_key_seq seq;
 126         u32 cur_rx_iv32 = 0;
 127         u16 p1k[IWL_P1K_SIZE];
 128         int ret, i;
 129
 130         switch (key->cipher) {
 131         case WLAN_CIPHER_SUITE_WEP40:
 132         case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
 133                 struct {
 134                         struct iwl_mvm_wep_key_cmd wep_key_cmd;
 135                         struct iwl_mvm_wep_key wep_key;
 136                 } __packed wkc = {
 137                         .wep_key_cmd.mac_id_n_color =
 138                                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 139                                                                 mvmvif->color)),
 140                         .wep_key_cmd.num_keys = 1,
 141                         /* firmware sets STA_KEY_FLG_WEP_13BYTES */
 142                         .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
 143                         .wep_key.key_index = key->keyidx,
 144                         .wep_key.key_size = key->keylen,
 145                 };
 146
 147                 /*
 148                  * This will fail -- the key functions don't set support
 149                  * pairwise WEP keys. However, that's better than silently
 150                  * failing WoWLAN. Or maybe not?
 151                  */
 152                 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
 153                         break;
 154
 155                 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
 156                 if (key->keyidx == mvmvif->tx_key_idx) {
 157                         /* TX key must be at offset 0 */
 158                         wkc.wep_key.key_offset = 0;
 159                 } else {
 160                         /* others start at 1 */
 161                         data->wep_key_idx++;
 162                         wkc.wep_key.key_offset = data->wep_key_idx;
 163                 }
 164
 165                 if (data->configure_keys) {
 166                         mutex_lock(&mvm->mutex);
 167                         ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0,
 168                                                    sizeof(wkc), &wkc);
 169                         data->error = ret != 0;
 170
 171                         mvm->ptk_ivlen = key->iv_len;
 172                         mvm->ptk_icvlen = key->icv_len;
 173                         mvm->gtk_ivlen = key->iv_len;
 174                         mvm->gtk_icvlen = key->icv_len;
 175                         mutex_unlock(&mvm->mutex);
 176                 }
 177
 178                 /* don't upload key again */
 179                 return;
 180         }
 181         default:
 182                 data->error = true;
 183                 return;
 184         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 185         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 186                 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
 187                 return;
 188         case WLAN_CIPHER_SUITE_AES_CMAC:
 189                 data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
 190                 /*
 191                  * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
 192                  * but we also shouldn't abort suspend due to that. It does have
 193                  * support for the IGTK key renewal, but doesn't really use the
 194                  * IGTK for anything. This means we could spuriously wake up or
 195                  * be deauthenticated, but that was considered acceptable.
 196                  */
 197                 return;
 198         case WLAN_CIPHER_SUITE_TKIP:
 199                 if (sta) {
 200                         u64 pn64;
 201
 202                         tkip_sc =
 203                            data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc;
 204                         tkip_tx_sc =
 205                                 &data->rsc_tsc->params.all_tsc_rsc.tkip.tsc;
 206
 207                         rx_p1ks = data->tkip->rx_uni;
 208
 209                         pn64 = atomic64_read(&key->tx_pn);
 210                         tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
 211                         tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
 212
 213                         ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
 214                                                   p1k);
 215                         iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k);
 216
 217                         memcpy(data->tkip->mic_keys.tx,
 218                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
 219                                IWL_MIC_KEY_SIZE);
 220
 221                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
 222                 } else {
 223                         tkip_sc =
 224                           data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc;
 225                         rx_p1ks = data->tkip->rx_multi;
 226                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
 227                         data->kek_kck_cmd->gtk_cipher =
 228                                 cpu_to_le32(STA_KEY_FLG_TKIP);
 229                 }
 230
 231                 /*
 232                  * For non-QoS this relies on the fact that both the uCode and
 233                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 234                  * for checking the IV in the frames.
 235                  */
 236                 for (i = 0; i < IWL_NUM_RSC; i++) {
 237                         ieee80211_get_key_rx_seq(key, i, &seq);
 238                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
 239                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
 240                         /* wrapping isn't allowed, AP must rekey */
 241                         if (seq.tkip.iv32 > cur_rx_iv32)
 242                                 cur_rx_iv32 = seq.tkip.iv32;
 243                 }
 244
 245                 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
 246                                           cur_rx_iv32, p1k);
 247                 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
 248                 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
 249                                           cur_rx_iv32 + 1, p1k);
 250                 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
 251
 252                 memcpy(rx_mic_key,
 253                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
 254                        IWL_MIC_KEY_SIZE);
 255
 256                 data->use_tkip = true;
 257                 data->use_rsc_tsc = true;
 258                 break;
 259         case WLAN_CIPHER_SUITE_CCMP:
 260         case WLAN_CIPHER_SUITE_GCMP:
 261         case WLAN_CIPHER_SUITE_GCMP_256:
 262                 if (sta) {
 263                         u64 pn64;
 264
 265                         aes_sc =
 266                            data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc;
 267                         aes_tx_sc =
 268                                 &data->rsc_tsc->params.all_tsc_rsc.aes.tsc;
 269
 270                         pn64 = atomic64_read(&key->tx_pn);
 271                         aes_tx_sc->pn = cpu_to_le64(pn64);
 272                 } else {
 273                         aes_sc =
 274                            data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc;
 275                         data->kek_kck_cmd->gtk_cipher =
 276                                 key->cipher == WLAN_CIPHER_SUITE_CCMP ?
 277                                 cpu_to_le32(STA_KEY_FLG_CCM) :
 278                                 cpu_to_le32(STA_KEY_FLG_GCMP);
 279                 }
 280
 281                 /*
 282                  * For non-QoS this relies on the fact that both the uCode and
 283                  * mac80211/our RX code use TID 0 for checking the PN.
 284                  */
 285                 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
 286                         struct iwl_mvm_sta *mvmsta;
 287                         struct iwl_mvm_key_pn *ptk_pn;
 288                         const u8 *pn;
 289
 290                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 291                         rcu_read_lock();
 292                         ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
 293                         if (WARN_ON(!ptk_pn)) {
 294                                 rcu_read_unlock();
 295                                 break;
 296                         }
 297
 298                         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
 299                                 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
 300                                                 mvm->trans->num_rx_queues);
 301                                 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
 302                                                            ((u64)pn[4] << 8) |
 303                                                            ((u64)pn[3] << 16) |
 304                                                            ((u64)pn[2] << 24) |
 305                                                            ((u64)pn[1] << 32) |
 306                                                            ((u64)pn[0] << 40));
 307                         }
 308
 309                         rcu_read_unlock();
 310                 } else {
 311                         for (i = 0; i < IWL_NUM_RSC; i++) {
 312                                 u8 *pn = seq.ccmp.pn;
 313
 314                                 ieee80211_get_key_rx_seq(key, i, &seq);
 315                                 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
 316                                                            ((u64)pn[4] << 8) |
 317                                                            ((u64)pn[3] << 16) |
 318                                                            ((u64)pn[2] << 24) |
 319                                                            ((u64)pn[1] << 32) |
 320                                                            ((u64)pn[0] << 40));
 321                         }
 322                 }
 323                 data->use_rsc_tsc = true;
 324                 break;
 325         }
 326
 327         IWL_DEBUG_WOWLAN(mvm, "GTK cipher %d\n", data->kek_kck_cmd->gtk_cipher);
 328
 329         if (data->configure_keys) {
 330                 mutex_lock(&mvm->mutex);
 331                 /*
 332                  * The D3 firmware hardcodes the key offset 0 as the key it
 333                  * uses to transmit packets to the AP, i.e. the PTK.
 334                  */
 335                 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
 336                         mvm->ptk_ivlen = key->iv_len;
 337                         mvm->ptk_icvlen = key->icv_len;
 338                         ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
 339                 } else {
 340                         /*
 341                          * firmware only supports TSC/RSC for a single key,
 342                          * so if there are multiple keep overwriting them
 343                          * with new ones -- this relies on mac80211 doing
 344                          * list_add_tail().
 345                          */
 346                         mvm->gtk_ivlen = key->iv_len;
 347                         mvm->gtk_icvlen = key->icv_len;
 348                         ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
 349                 }
 350                 mutex_unlock(&mvm->mutex);
 351                 data->error = ret != 0;
 352         }
 353 }
 354
 355 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
 356                                     struct cfg80211_wowlan *wowlan)
 357 {
 358         struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
 359         struct iwl_host_cmd cmd = {
 360                 .id = WOWLAN_PATTERNS,
 361                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 362         };
 363         int i, err;
 364
 365         if (!wowlan->n_patterns)
 366                 return 0;
 367
 368         cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
 369
 370         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
 371         if (!pattern_cmd)
 372                 return -ENOMEM;
 373
 374         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
 375
 376         for (i = 0; i < wowlan->n_patterns; i++) {
 377                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 378
 379                 memcpy(&pattern_cmd->patterns[i].mask,
 380                        wowlan->patterns[i].mask, mask_len);
 381                 memcpy(&pattern_cmd->patterns[i].pattern,
 382                        wowlan->patterns[i].pattern,
 383                        wowlan->patterns[i].pattern_len);
 384                 pattern_cmd->patterns[i].mask_size = mask_len;
 385                 pattern_cmd->patterns[i].pattern_size =
 386                         wowlan->patterns[i].pattern_len;
 387         }
 388
 389         cmd.data[0] = pattern_cmd;
 390         err = iwl_mvm_send_cmd(mvm, &cmd);
 391         kfree(pattern_cmd);
 392         return err;
 393 }
 394
 395 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
 396                                  struct cfg80211_wowlan *wowlan)
 397 {
 398         struct iwl_wowlan_patterns_cmd *pattern_cmd;
 399         struct iwl_host_cmd cmd = {
 400                 .id = WOWLAN_PATTERNS,
 401                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 402         };
 403         int i, err;
 404
 405         if (!wowlan->n_patterns)
 406                 return 0;
 407
 408         cmd.len[0] = sizeof(*pattern_cmd) +
 409                 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
 410
 411         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
 412         if (!pattern_cmd)
 413                 return -ENOMEM;
 414
 415         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
 416
 417         for (i = 0; i < wowlan->n_patterns; i++) {
 418                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 419
 420                 pattern_cmd->patterns[i].pattern_type =
 421                         WOWLAN_PATTERN_TYPE_BITMASK;
 422
 423                 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
 424                        wowlan->patterns[i].mask, mask_len);
 425                 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
 426                        wowlan->patterns[i].pattern,
 427                        wowlan->patterns[i].pattern_len);
 428                 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
 429                 pattern_cmd->patterns[i].u.bitmask.pattern_size =
 430                         wowlan->patterns[i].pattern_len;
 431         }
 432
 433         cmd.data[0] = pattern_cmd;
 434         err = iwl_mvm_send_cmd(mvm, &cmd);
 435         kfree(pattern_cmd);
 436         return err;
 437 }
 438
 439 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 440                                 struct ieee80211_sta *ap_sta)
 441 {
 442         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 443         struct ieee80211_chanctx_conf *ctx;
 444         u8 chains_static, chains_dynamic;
 445         struct cfg80211_chan_def chandef;
 446         int ret, i;
 447         struct iwl_binding_cmd_v1 binding_cmd = {};
 448         struct iwl_time_quota_cmd quota_cmd = {};
 449         struct iwl_time_quota_data *quota;
 450         u32 status;
 451
 452         if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
 453                 return -EINVAL;
 454
 455         /* add back the PHY */
 456         if (WARN_ON(!mvmvif->phy_ctxt))
 457                 return -EINVAL;
 458
 459         rcu_read_lock();
 460         ctx = rcu_dereference(vif->chanctx_conf);
 461         if (WARN_ON(!ctx)) {
 462                 rcu_read_unlock();
 463                 return -EINVAL;
 464         }
 465         chandef = ctx->def;
 466         chains_static = ctx->rx_chains_static;
 467         chains_dynamic = ctx->rx_chains_dynamic;
 468         rcu_read_unlock();
 469
 470         ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
 471                                    chains_static, chains_dynamic);
 472         if (ret)
 473                 return ret;
 474
 475         /* add back the MAC */
 476         mvmvif->uploaded = false;
 477
 478         if (WARN_ON(!vif->bss_conf.assoc))
 479                 return -EINVAL;
 480
 481         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 482         if (ret)
 483                 return ret;
 484
 485         /* add back binding - XXX refactor? */
 486         binding_cmd.id_and_color =
 487                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 488                                                 mvmvif->phy_ctxt->color));
 489         binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
 490         binding_cmd.phy =
 491                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 492                                                 mvmvif->phy_ctxt->color));
 493         binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 494                                                               mvmvif->color));
 495         for (i = 1; i < MAX_MACS_IN_BINDING; i++)
 496                 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
 497
 498         status = 0;
 499         ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
 500                                           IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
 501                                           &status);
 502         if (ret) {
 503                 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
 504                 return ret;
 505         }
 506
 507         if (status) {
 508                 IWL_ERR(mvm, "Binding command failed: %u\n", status);
 509                 return -EIO;
 510         }
 511
 512         ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
 513         if (ret)
 514                 return ret;
 515         rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
 516
 517         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
 518         if (ret)
 519                 return ret;
 520
 521         /* and some quota */
 522         quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, 0);
 523         quota->id_and_color =
 524                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 525                                                 mvmvif->phy_ctxt->color));
 526         quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 527         quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 528
 529         for (i = 1; i < MAX_BINDINGS; i++) {
 530                 quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, i);
 531                 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
 532         }
 533
 534         ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
 535                                    iwl_mvm_quota_cmd_size(mvm), &quota_cmd);
 536         if (ret)
 537                 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
 538
 539         if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
 540                 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
 541
 542         return 0;
 543 }
 544
 545 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
 546                                        struct ieee80211_vif *vif)
 547 {
 548         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 549         struct iwl_nonqos_seq_query_cmd query_cmd = {
 550                 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
 551                 .mac_id_n_color =
 552                         cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 553                                                         mvmvif->color)),
 554         };
 555         struct iwl_host_cmd cmd = {
 556                 .id = NON_QOS_TX_COUNTER_CMD,
 557                 .flags = CMD_WANT_SKB,
 558         };
 559         int err;
 560         u32 size;
 561
 562         cmd.data[0] = &query_cmd;
 563         cmd.len[0] = sizeof(query_cmd);
 564
 565         err = iwl_mvm_send_cmd(mvm, &cmd);
 566         if (err)
 567                 return err;
 568
 569         size = iwl_rx_packet_payload_len(cmd.resp_pkt);
 570         if (size < sizeof(__le16)) {
 571                 err = -EINVAL;
 572         } else {
 573                 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
 574                 /* firmware returns next, not last-used seqno */
 575                 err = (u16) (err - 0x10);
 576         }
 577
 578         iwl_free_resp(&cmd);
 579         return err;
 580 }
 581
 582 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 583 {
 584         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 585         struct iwl_nonqos_seq_query_cmd query_cmd = {
 586                 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
 587                 .mac_id_n_color =
 588                         cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 589                                                         mvmvif->color)),
 590                 .value = cpu_to_le16(mvmvif->seqno),
 591         };
 592
 593         /* return if called during restart, not resume from D3 */
 594         if (!mvmvif->seqno_valid)
 595                 return;
 596
 597         mvmvif->seqno_valid = false;
 598
 599         if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
 600                                  sizeof(query_cmd), &query_cmd))
 601                 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
 602 }
 603
 604 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
 605 {
 606         iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
 607
 608         iwl_mvm_stop_device(mvm);
 609         /*
 610          * Set the HW restart bit -- this is mostly true as we're
 611          * going to load new firmware and reprogram that, though
 612          * the reprogramming is going to be manual to avoid adding
 613          * all the MACs that aren't support.
 614          * We don't have to clear up everything though because the
 615          * reprogramming is manual. When we resume, we'll actually
 616          * go through a proper restart sequence again to switch
 617          * back to the runtime firmware image.
 618          */
 619         set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 620
 621         /* the fw is reset, so all the keys are cleared */
 622         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 623
 624         mvm->ptk_ivlen = 0;
 625         mvm->ptk_icvlen = 0;
 626         mvm->ptk_ivlen = 0;
 627         mvm->ptk_icvlen = 0;
 628
 629         return iwl_mvm_load_d3_fw(mvm);
 630 }
 631
 632 static int
 633 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
 634                           struct cfg80211_wowlan *wowlan,
 635                           struct iwl_wowlan_config_cmd *wowlan_config_cmd,
 636                           struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
 637                           struct ieee80211_sta *ap_sta)
 638 {
 639         int ret;
 640         struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
 641
 642         /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
 643
 644         wowlan_config_cmd->is_11n_connection =
 645                                         ap_sta->ht_cap.ht_supported;
 646         wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
 647                 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
 648
 649         /* Query the last used seqno and set it */
 650         ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
 651         if (ret < 0)
 652                 return ret;
 653
 654         wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
 655
 656         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
 657
 658         if (wowlan->disconnect)
 659                 wowlan_config_cmd->wakeup_filter |=
 660                         cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 661                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 662         if (wowlan->magic_pkt)
 663                 wowlan_config_cmd->wakeup_filter |=
 664                         cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
 665         if (wowlan->gtk_rekey_failure)
 666                 wowlan_config_cmd->wakeup_filter |=
 667                         cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
 668         if (wowlan->eap_identity_req)
 669                 wowlan_config_cmd->wakeup_filter |=
 670                         cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
 671         if (wowlan->four_way_handshake)
 672                 wowlan_config_cmd->wakeup_filter |=
 673                         cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
 674         if (wowlan->n_patterns)
 675                 wowlan_config_cmd->wakeup_filter |=
 676                         cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
 677
 678         if (wowlan->rfkill_release)
 679                 wowlan_config_cmd->wakeup_filter |=
 680                         cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
 681
 682         if (wowlan->tcp) {
 683                 /*
 684                  * Set the "link change" (really "link lost") flag as well
 685                  * since that implies losing the TCP connection.
 686                  */
 687                 wowlan_config_cmd->wakeup_filter |=
 688                         cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
 689                                     IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
 690                                     IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
 691                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 692         }
 693
 694         if (wowlan->any) {
 695                 wowlan_config_cmd->wakeup_filter |=
 696                         cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 697                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE |
 698                                     IWL_WOWLAN_WAKEUP_RX_FRAME |
 699                                     IWL_WOWLAN_WAKEUP_BCN_FILTERING);
 700         }
 701
 702         return 0;
 703 }
 704
 705 static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
 706                                             struct ieee80211_vif *vif,
 707                                             u32 cmd_flags)
 708 {
 709         struct iwl_wowlan_kek_kck_material_cmd_v3 kek_kck_cmd = {};
 710         struct iwl_wowlan_tkip_params_cmd tkip_cmd = {};
 711         bool unified = fw_has_capa(&mvm->fw->ucode_capa,
 712                                    IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 713         struct wowlan_key_data key_data = {
 714                 .configure_keys = !unified,
 715                 .use_rsc_tsc = false,
 716                 .tkip = &tkip_cmd,
 717                 .use_tkip = false,
 718                 .kek_kck_cmd = &kek_kck_cmd,
 719         };
 720         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 721         int ret;
 722         u8 cmd_ver;
 723         size_t cmd_size;
 724
 725         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
 726         if (!key_data.rsc_tsc)
 727                 return -ENOMEM;
 728
 729         /*
 730          * if we have to configure keys, call ieee80211_iter_keys(),
 731          * as we need non-atomic context in order to take the
 732          * required locks.
 733          */
 734         /*
 735          * Note that currently we don't propagate cmd_flags
 736          * to the iterator. In case of key_data.configure_keys,
 737          * all the configured commands are SYNC, and
 738          * iwl_mvm_wowlan_program_keys() will take care of
 739          * locking/unlocking mvm->mutex.
 740          */
 741         ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
 742                             &key_data);
 743
 744         if (key_data.error) {
 745                 ret = -EIO;
 746                 goto out;
 747         }
 748
 749         if (key_data.use_rsc_tsc) {
 750                 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
 751                                                 WOWLAN_TSC_RSC_PARAM,
 752                                                 IWL_FW_CMD_VER_UNKNOWN);
 753                 int size;
 754
 755                 if (ver == 4) {
 756                         size = sizeof(*key_data.rsc_tsc);
 757                         key_data.rsc_tsc->sta_id =
 758                                 cpu_to_le32(mvmvif->ap_sta_id);
 759
 760                 } else if (ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) {
 761                         size = sizeof(key_data.rsc_tsc->params);
 762                 } else {
 763                         ret = 0;
 764                         WARN_ON_ONCE(1);
 765                         goto out;
 766                 }
 767
 768                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
 769                                            cmd_flags,
 770                                            size,
 771                                            key_data.rsc_tsc);
 772
 773                 if (ret)
 774                         goto out;
 775         }
 776
 777         if (key_data.use_tkip &&
 778             !fw_has_api(&mvm->fw->ucode_capa,
 779                         IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
 780                 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
 781                                                 WOWLAN_TKIP_PARAM,
 782                                                 IWL_FW_CMD_VER_UNKNOWN);
 783                 int size;
 784
 785                 if (ver == 2) {
 786                         size = sizeof(tkip_cmd);
 787                         key_data.tkip->sta_id =
 788                                 cpu_to_le32(mvmvif->ap_sta_id);
 789                 } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
 790                         size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
 791                 } else {
 792                         ret =  -EINVAL;
 793                         WARN_ON_ONCE(1);
 794                         goto out;
 795                 }
 796
 797                 /* send relevant data according to CMD version */
 798                 ret = iwl_mvm_send_cmd_pdu(mvm,
 799                                            WOWLAN_TKIP_PARAM,
 800                                            cmd_flags, size,
 801                                            &tkip_cmd);
 802                 if (ret)
 803                         goto out;
 804         }
 805
 806         /* configure rekey data only if offloaded rekey is supported (d3) */
 807         if (mvmvif->rekey_data.valid) {
 808                 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
 809                                                 IWL_ALWAYS_LONG_GROUP,
 810                                                 WOWLAN_KEK_KCK_MATERIAL,
 811                                                 IWL_FW_CMD_VER_UNKNOWN);
 812                 if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 &&
 813                             cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
 814                         return -EINVAL;
 815                 if (cmd_ver == 3)
 816                         cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
 817                 else
 818                         cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
 819
 820                 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
 821                        mvmvif->rekey_data.kck_len);
 822                 kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
 823                 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
 824                        mvmvif->rekey_data.kek_len);
 825                 kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
 826                 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
 827                 kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
 828
 829                 IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
 830                                  mvmvif->rekey_data.akm);
 831
 832                 ret = iwl_mvm_send_cmd_pdu(mvm,
 833                                            WOWLAN_KEK_KCK_MATERIAL, cmd_flags,
 834                                            cmd_size,
 835                                            &kek_kck_cmd);
 836                 if (ret)
 837                         goto out;
 838         }
 839         ret = 0;
 840 out:
 841         kfree(key_data.rsc_tsc);
 842         return ret;
 843 }
 844
 845 static int
 846 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
 847                       struct cfg80211_wowlan *wowlan,
 848                       struct iwl_wowlan_config_cmd *wowlan_config_cmd,
 849                       struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
 850                       struct ieee80211_sta *ap_sta)
 851 {
 852         int ret;
 853         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 854                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 855
 856         mvm->offload_tid = wowlan_config_cmd->offloading_tid;
 857
 858         if (!unified_image) {
 859                 ret = iwl_mvm_switch_to_d3(mvm);
 860                 if (ret)
 861                         return ret;
 862
 863                 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
 864                 if (ret)
 865                         return ret;
 866         }
 867
 868         /*
 869          * This needs to be unlocked due to lock ordering
 870          * constraints. Since we're in the suspend path
 871          * that isn't really a problem though.
 872          */
 873         mutex_unlock(&mvm->mutex);
 874         ret = iwl_mvm_wowlan_config_key_params(mvm, vif, CMD_ASYNC);
 875         mutex_lock(&mvm->mutex);
 876         if (ret)
 877                 return ret;
 878
 879         ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
 880                                    sizeof(*wowlan_config_cmd),
 881                                    wowlan_config_cmd);
 882         if (ret)
 883                 return ret;
 884
 885         if (fw_has_api(&mvm->fw->ucode_capa,
 886                        IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
 887                 ret = iwl_mvm_send_patterns(mvm, wowlan);
 888         else
 889                 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
 890         if (ret)
 891                 return ret;
 892
 893         return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
 894 }
 895
 896 static int
 897 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
 898                          struct cfg80211_wowlan *wowlan,
 899                          struct cfg80211_sched_scan_request *nd_config,
 900                          struct ieee80211_vif *vif)
 901 {
 902         int ret;
 903         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 904                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 905
 906         if (!unified_image) {
 907                 ret = iwl_mvm_switch_to_d3(mvm);
 908                 if (ret)
 909                         return ret;
 910         } else {
 911                 /* In theory, we wouldn't have to stop a running sched
 912                  * scan in order to start another one (for
 913                  * net-detect).  But in practice this doesn't seem to
 914                  * work properly, so stop any running sched_scan now.
 915                  */
 916                 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
 917                 if (ret)
 918                         return ret;
 919         }
 920
 921         ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
 922                                        IWL_MVM_SCAN_NETDETECT);
 923         if (ret)
 924                 return ret;
 925
 926         if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
 927                 return -EBUSY;
 928
 929         /* save the sched scan matchsets... */
 930         if (nd_config->n_match_sets) {
 931                 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
 932                                              sizeof(*nd_config->match_sets) *
 933                                              nd_config->n_match_sets,
 934                                              GFP_KERNEL);
 935                 if (mvm->nd_match_sets)
 936                         mvm->n_nd_match_sets = nd_config->n_match_sets;
 937         }
 938
 939         /* ...and the sched scan channels for later reporting */
 940         mvm->nd_channels = kmemdup(nd_config->channels,
 941                                    sizeof(*nd_config->channels) *
 942                                    nd_config->n_channels,
 943                                    GFP_KERNEL);
 944         if (mvm->nd_channels)
 945                 mvm->n_nd_channels = nd_config->n_channels;
 946
 947         return 0;
 948 }
 949
 950 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
 951 {
 952         kfree(mvm->nd_match_sets);
 953         mvm->nd_match_sets = NULL;
 954         mvm->n_nd_match_sets = 0;
 955         kfree(mvm->nd_channels);
 956         mvm->nd_channels = NULL;
 957         mvm->n_nd_channels = 0;
 958 }
 959
 960 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
 961                              struct cfg80211_wowlan *wowlan,
 962                              bool test)
 963 {
 964         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 965         struct ieee80211_vif *vif = NULL;
 966         struct iwl_mvm_vif *mvmvif = NULL;
 967         struct ieee80211_sta *ap_sta = NULL;
 968         struct iwl_d3_manager_config d3_cfg_cmd_data = {
 969                 /*
 970                  * Program the minimum sleep time to 10 seconds, as many
 971                  * platforms have issues processing a wakeup signal while
 972                  * still being in the process of suspending.
 973                  */
 974                 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
 975         };
 976         struct iwl_host_cmd d3_cfg_cmd = {
 977                 .id = D3_CONFIG_CMD,
 978                 .flags = CMD_WANT_SKB,
 979                 .data[0] = &d3_cfg_cmd_data,
 980                 .len[0] = sizeof(d3_cfg_cmd_data),
 981         };
 982         int ret;
 983         int len __maybe_unused;
 984         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 985                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 986
 987         if (!wowlan) {
 988                 /*
 989                  * mac80211 shouldn't get here, but for D3 test
 990                  * it doesn't warrant a warning
 991                  */
 992                 WARN_ON(!test);
 993                 return -EINVAL;
 994         }
 995
 996         mutex_lock(&mvm->mutex);
 997
 998         set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
 999
1000         vif = iwl_mvm_get_bss_vif(mvm);
1001         if (IS_ERR_OR_NULL(vif)) {
1002                 ret = 1;
1003                 goto out_noreset;
1004         }
1005
1006         mvmvif = iwl_mvm_vif_from_mac80211(vif);
1007
1008         if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) {
1009                 /* if we're not associated, this must be netdetect */
1010                 if (!wowlan->nd_config) {
1011                         ret = 1;
1012                         goto out_noreset;
1013                 }
1014
1015                 ret = iwl_mvm_netdetect_config(
1016                         mvm, wowlan, wowlan->nd_config, vif);
1017                 if (ret)
1018                         goto out;
1019
1020                 mvm->net_detect = true;
1021         } else {
1022                 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1023
1024                 wowlan_config_cmd.sta_id = mvmvif->ap_sta_id;
1025
1026                 ap_sta = rcu_dereference_protected(
1027                         mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1028                         lockdep_is_held(&mvm->mutex));
1029                 if (IS_ERR_OR_NULL(ap_sta)) {
1030                         ret = -EINVAL;
1031                         goto out_noreset;
1032                 }
1033
1034                 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1035                                                 vif, mvmvif, ap_sta);
1036                 if (ret)
1037                         goto out_noreset;
1038                 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1039                                             vif, mvmvif, ap_sta);
1040                 if (ret)
1041                         goto out;
1042
1043                 mvm->net_detect = false;
1044         }
1045
1046         ret = iwl_mvm_power_update_device(mvm);
1047         if (ret)
1048                 goto out;
1049
1050         ret = iwl_mvm_power_update_mac(mvm);
1051         if (ret)
1052                 goto out;
1053
1054 #ifdef CONFIG_IWLWIFI_DEBUGFS
1055         if (mvm->d3_wake_sysassert)
1056                 d3_cfg_cmd_data.wakeup_flags |=
1057                         cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1058 #endif
1059
1060         /*
1061          * Prior to 9000 device family the driver needs to stop the dbg
1062          * recording before entering D3. In later devices the FW stops the
1063          * recording automatically.
1064          */
1065         if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
1066                 iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
1067
1068         /* must be last -- this switches firmware state */
1069         ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1070         if (ret)
1071                 goto out;
1072 #ifdef CONFIG_IWLWIFI_DEBUGFS
1073         len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1074         if (len >= sizeof(u32)) {
1075                 mvm->d3_test_pme_ptr =
1076                         le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1077         }
1078 #endif
1079         iwl_free_resp(&d3_cfg_cmd);
1080
1081         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1082
1083         ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1084  out:
1085         if (ret < 0) {
1086                 iwl_mvm_free_nd(mvm);
1087
1088                 if (!unified_image) {
1089                         if (mvm->fw_restart > 0) {
1090                                 mvm->fw_restart--;
1091                                 ieee80211_restart_hw(mvm->hw);
1092                         }
1093                 }
1094
1095                 clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
1096         }
1097  out_noreset:
1098         mutex_unlock(&mvm->mutex);
1099
1100         return ret;
1101 }
1102
1103 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1104 {
1105         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1106         struct iwl_trans *trans = mvm->trans;
1107         int ret;
1108
1109         iwl_mvm_pause_tcm(mvm, true);
1110
1111         iwl_fw_runtime_suspend(&mvm->fwrt);
1112
1113         ret = iwl_trans_suspend(trans);
1114         if (ret)
1115                 return ret;
1116
1117         trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1118
1119         return __iwl_mvm_suspend(hw, wowlan, false);
1120 }
1121
1122 /* converted data from the different status responses */
1123 struct iwl_wowlan_status_data {
1124         u16 pattern_number;
1125         u16 qos_seq_ctr[8];
1126         u32 wakeup_reasons;
1127         u32 wake_packet_length;
1128         u32 wake_packet_bufsize;
1129         const u8 *wake_packet;
1130 };
1131
1132 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1133                                           struct ieee80211_vif *vif,
1134                                           struct iwl_wowlan_status_data *status)
1135 {
1136         struct sk_buff *pkt = NULL;
1137         struct cfg80211_wowlan_wakeup wakeup = {
1138                 .pattern_idx = -1,
1139         };
1140         struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1141         u32 reasons = status->wakeup_reasons;
1142
1143         if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1144                 wakeup_report = NULL;
1145                 goto report;
1146         }
1147
1148         pm_wakeup_event(mvm->dev, 0);
1149
1150         if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1151                 wakeup.magic_pkt = true;
1152
1153         if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1154                 wakeup.pattern_idx =
1155                         status->pattern_number;
1156
1157         if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1158                        IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1159                 wakeup.disconnect = true;
1160
1161         if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1162                 wakeup.gtk_rekey_failure = true;
1163
1164         if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1165                 wakeup.rfkill_release = true;
1166
1167         if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1168                 wakeup.eap_identity_req = true;
1169
1170         if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1171                 wakeup.four_way_handshake = true;
1172
1173         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1174                 wakeup.tcp_connlost = true;
1175
1176         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1177                 wakeup.tcp_nomoretokens = true;
1178
1179         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1180                 wakeup.tcp_match = true;
1181
1182         if (status->wake_packet_bufsize) {
1183                 int pktsize = status->wake_packet_bufsize;
1184                 int pktlen = status->wake_packet_length;
1185                 const u8 *pktdata = status->wake_packet;
1186                 struct ieee80211_hdr *hdr = (void *)pktdata;
1187                 int truncated = pktlen - pktsize;
1188
1189                 /* this would be a firmware bug */
1190                 if (WARN_ON_ONCE(truncated < 0))
1191                         truncated = 0;
1192
1193                 if (ieee80211_is_data(hdr->frame_control)) {
1194                         int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1195                         int ivlen = 0, icvlen = 4; /* also FCS */
1196
1197                         pkt = alloc_skb(pktsize, GFP_KERNEL);
1198                         if (!pkt)
1199                                 goto report;
1200
1201                         skb_put_data(pkt, pktdata, hdrlen);
1202                         pktdata += hdrlen;
1203                         pktsize -= hdrlen;
1204
1205                         if (ieee80211_has_protected(hdr->frame_control)) {
1206                                 /*
1207                                  * This is unlocked and using gtk_i(c)vlen,
1208                                  * but since everything is under RTNL still
1209                                  * that's not really a problem - changing
1210                                  * it would be difficult.
1211                                  */
1212                                 if (is_multicast_ether_addr(hdr->addr1)) {
1213                                         ivlen = mvm->gtk_ivlen;
1214                                         icvlen += mvm->gtk_icvlen;
1215                                 } else {
1216                                         ivlen = mvm->ptk_ivlen;
1217                                         icvlen += mvm->ptk_icvlen;
1218                                 }
1219                         }
1220
1221                         /* if truncated, FCS/ICV is (partially) gone */
1222                         if (truncated >= icvlen) {
1223                                 icvlen = 0;
1224                                 truncated -= icvlen;
1225                         } else {
1226                                 icvlen -= truncated;
1227                                 truncated = 0;
1228                         }
1229
1230                         pktsize -= ivlen + icvlen;
1231                         pktdata += ivlen;
1232
1233                         skb_put_data(pkt, pktdata, pktsize);
1234
1235                         if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1236                                 goto report;
1237                         wakeup.packet = pkt->data;
1238                         wakeup.packet_present_len = pkt->len;
1239                         wakeup.packet_len = pkt->len - truncated;
1240                         wakeup.packet_80211 = false;
1241                 } else {
1242                         int fcslen = 4;
1243
1244                         if (truncated >= 4) {
1245                                 truncated -= 4;
1246                                 fcslen = 0;
1247                         } else {
1248                                 fcslen -= truncated;
1249                                 truncated = 0;
1250                         }
1251                         pktsize -= fcslen;
1252                         wakeup.packet = status->wake_packet;
1253                         wakeup.packet_present_len = pktsize;
1254                         wakeup.packet_len = pktlen - truncated;
1255                         wakeup.packet_80211 = true;
1256                 }
1257         }
1258
1259  report:
1260         ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1261         kfree_skb(pkt);
1262 }
1263
1264 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1265                                   struct ieee80211_key_seq *seq)
1266 {
1267         u64 pn;
1268
1269         pn = le64_to_cpu(sc->pn);
1270         seq->ccmp.pn[0] = pn >> 40;
1271         seq->ccmp.pn[1] = pn >> 32;
1272         seq->ccmp.pn[2] = pn >> 24;
1273         seq->ccmp.pn[3] = pn >> 16;
1274         seq->ccmp.pn[4] = pn >> 8;
1275         seq->ccmp.pn[5] = pn;
1276 }
1277
1278 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1279                                    struct ieee80211_key_seq *seq)
1280 {
1281         seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1282         seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1283 }
1284
1285 static void iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs,
1286                                    struct ieee80211_sta *sta,
1287                                    struct ieee80211_key_conf *key)
1288 {
1289         int tid;
1290
1291         BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1292
1293         if (sta && iwl_mvm_has_new_rx_api(mvm)) {
1294                 struct iwl_mvm_sta *mvmsta;
1295                 struct iwl_mvm_key_pn *ptk_pn;
1296
1297                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1298
1299                 rcu_read_lock();
1300                 ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
1301                 if (WARN_ON(!ptk_pn)) {
1302                         rcu_read_unlock();
1303                         return;
1304                 }
1305
1306                 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1307                         struct ieee80211_key_seq seq = {};
1308                         int i;
1309
1310                         iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1311                         ieee80211_set_key_rx_seq(key, tid, &seq);
1312                         for (i = 1; i < mvm->trans->num_rx_queues; i++)
1313                                 memcpy(ptk_pn->q[i].pn[tid],
1314                                        seq.ccmp.pn, IEEE80211_CCMP_PN_LEN);
1315                 }
1316                 rcu_read_unlock();
1317         } else {
1318                 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1319                         struct ieee80211_key_seq seq = {};
1320
1321                         iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1322                         ieee80211_set_key_rx_seq(key, tid, &seq);
1323                 }
1324         }
1325 }
1326
1327 static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs,
1328                                     struct ieee80211_key_conf *key)
1329 {
1330         int tid;
1331
1332         BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1333
1334         for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1335                 struct ieee80211_key_seq seq = {};
1336
1337                 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq);
1338                 ieee80211_set_key_rx_seq(key, tid, &seq);
1339         }
1340 }
1341
1342 static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm,
1343                                    struct ieee80211_key_conf *key,
1344                                    struct iwl_wowlan_status *status)
1345 {
1346         union iwl_all_tsc_rsc *rsc = &status->gtk[0].rsc.all_tsc_rsc;
1347
1348         switch (key->cipher) {
1349         case WLAN_CIPHER_SUITE_CCMP:
1350         case WLAN_CIPHER_SUITE_GCMP:
1351         case WLAN_CIPHER_SUITE_GCMP_256:
1352                 iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key);
1353                 break;
1354         case WLAN_CIPHER_SUITE_TKIP:
1355                 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key);
1356                 break;
1357         default:
1358                 WARN_ON(1);
1359         }
1360 }
1361
1362 struct iwl_mvm_d3_gtk_iter_data {
1363         struct iwl_mvm *mvm;
1364         struct iwl_wowlan_status *status;
1365         void *last_gtk;
1366         u32 cipher;
1367         bool find_phase, unhandled_cipher;
1368         int num_keys;
1369 };
1370
1371 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1372                                    struct ieee80211_vif *vif,
1373                                    struct ieee80211_sta *sta,
1374                                    struct ieee80211_key_conf *key,
1375                                    void *_data)
1376 {
1377         struct iwl_mvm_d3_gtk_iter_data *data = _data;
1378
1379         if (data->unhandled_cipher)
1380                 return;
1381
1382         switch (key->cipher) {
1383         case WLAN_CIPHER_SUITE_WEP40:
1384         case WLAN_CIPHER_SUITE_WEP104:
1385                 /* ignore WEP completely, nothing to do */
1386                 return;
1387         case WLAN_CIPHER_SUITE_CCMP:
1388         case WLAN_CIPHER_SUITE_GCMP:
1389         case WLAN_CIPHER_SUITE_GCMP_256:
1390         case WLAN_CIPHER_SUITE_TKIP:
1391                 /* we support these */
1392                 break;
1393         default:
1394                 /* everything else (even CMAC for MFP) - disconnect from AP */
1395                 data->unhandled_cipher = true;
1396                 return;
1397         }
1398
1399         data->num_keys++;
1400
1401         /*
1402          * pairwise key - update sequence counters only;
1403          * note that this assumes no TDLS sessions are active
1404          */
1405         if (sta) {
1406                 struct ieee80211_key_seq seq = {};
1407                 union iwl_all_tsc_rsc *sc =
1408                         &data->status->gtk[0].rsc.all_tsc_rsc;
1409
1410                 if (data->find_phase)
1411                         return;
1412
1413                 switch (key->cipher) {
1414                 case WLAN_CIPHER_SUITE_CCMP:
1415                 case WLAN_CIPHER_SUITE_GCMP:
1416                 case WLAN_CIPHER_SUITE_GCMP_256:
1417                         iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc,
1418                                                sta, key);
1419                         atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn));
1420                         break;
1421                 case WLAN_CIPHER_SUITE_TKIP:
1422                         iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq);
1423                         iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key);
1424                         atomic64_set(&key->tx_pn,
1425                                      (u64)seq.tkip.iv16 |
1426                                      ((u64)seq.tkip.iv32 << 16));
1427                         break;
1428                 }
1429
1430                 /* that's it for this key */
1431                 return;
1432         }
1433
1434         if (data->find_phase) {
1435                 data->last_gtk = key;
1436                 data->cipher = key->cipher;
1437                 return;
1438         }
1439
1440         if (data->status->num_of_gtk_rekeys)
1441                 ieee80211_remove_key(key);
1442         else if (data->last_gtk == key)
1443                 iwl_mvm_set_key_rx_seq(data->mvm, key, data->status);
1444 }
1445
1446 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1447                                           struct ieee80211_vif *vif,
1448                                           struct iwl_wowlan_status *status)
1449 {
1450         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1451         struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1452                 .mvm = mvm,
1453                 .status = status,
1454         };
1455         u32 disconnection_reasons =
1456                 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1457                 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1458
1459         if (!status || !vif->bss_conf.bssid)
1460                 return false;
1461
1462         if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons)
1463                 return false;
1464
1465         /* find last GTK that we used initially, if any */
1466         gtkdata.find_phase = true;
1467         ieee80211_iter_keys(mvm->hw, vif,
1468                             iwl_mvm_d3_update_keys, &gtkdata);
1469         /* not trying to keep connections with MFP/unhandled ciphers */
1470         if (gtkdata.unhandled_cipher)
1471                 return false;
1472         if (!gtkdata.num_keys)
1473                 goto out;
1474         if (!gtkdata.last_gtk)
1475                 return false;
1476
1477         /*
1478          * invalidate all other GTKs that might still exist and update
1479          * the one that we used
1480          */
1481         gtkdata.find_phase = false;
1482         ieee80211_iter_keys(mvm->hw, vif,
1483                             iwl_mvm_d3_update_keys, &gtkdata);
1484
1485         IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
1486                          le32_to_cpu(status->num_of_gtk_rekeys));
1487         if (status->num_of_gtk_rekeys) {
1488                 struct ieee80211_key_conf *key;
1489                 struct {
1490                         struct ieee80211_key_conf conf;
1491                         u8 key[32];
1492                 } conf = {
1493                         .conf.cipher = gtkdata.cipher,
1494                         .conf.keyidx =
1495                                 iwlmvm_wowlan_gtk_idx(&status->gtk[0]),
1496                 };
1497                 __be64 replay_ctr;
1498
1499                 IWL_DEBUG_WOWLAN(mvm,
1500                                  "Received from FW GTK cipher %d, key index %d\n",
1501                                  conf.conf.cipher, conf.conf.keyidx);
1502                 switch (gtkdata.cipher) {
1503                 case WLAN_CIPHER_SUITE_CCMP:
1504                 case WLAN_CIPHER_SUITE_GCMP:
1505                         BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
1506                         BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
1507                         conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1508                         memcpy(conf.conf.key, status->gtk[0].key,
1509                                WLAN_KEY_LEN_CCMP);
1510                         break;
1511                 case WLAN_CIPHER_SUITE_GCMP_256:
1512                         BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
1513                         conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
1514                         memcpy(conf.conf.key, status->gtk[0].key,
1515                                WLAN_KEY_LEN_GCMP_256);
1516                         break;
1517                 case WLAN_CIPHER_SUITE_TKIP:
1518                         BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
1519                         conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1520                         memcpy(conf.conf.key, status->gtk[0].key, 16);
1521                         /* leave TX MIC key zeroed, we don't use it anyway */
1522                         memcpy(conf.conf.key +
1523                                NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1524                                status->gtk[0].tkip_mic_key, 8);
1525                         break;
1526                 }
1527
1528                 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1529                 if (IS_ERR(key))
1530                         return false;
1531                 iwl_mvm_set_key_rx_seq(mvm, key, status);
1532
1533                 replay_ctr =
1534                         cpu_to_be64(le64_to_cpu(status->replay_ctr));
1535
1536                 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1537                                            (void *)&replay_ctr, GFP_KERNEL);
1538         }
1539
1540 out:
1541         mvmvif->seqno_valid = true;
1542         /* +0x10 because the set API expects next-to-use, not last-used */
1543         mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10;
1544
1545         return true;
1546 }
1547
1548 /* Occasionally, templates would be nice. This is one of those times ... */
1549 #define iwl_mvm_parse_wowlan_status_common(_ver)                        \
1550 static struct iwl_wowlan_status *                                       \
1551 iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm,        \
1552                                             void *_data, int len)       \
1553 {                                                                       \
1554         struct iwl_wowlan_status *status;                               \
1555         struct iwl_wowlan_status_ ##_ver *data = _data;                 \
1556         int data_size;                                                  \
1557                                                                         \
1558         if (len < sizeof(*data)) {                                      \
1559                 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");      \
1560                 return ERR_PTR(-EIO);                                   \
1561         }                                                               \
1562                                                                         \
1563         data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4);   \
1564         if (len != sizeof(*data) + data_size) {                         \
1565                 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");      \
1566                 return ERR_PTR(-EIO);                                   \
1567         }                                                               \
1568                                                                         \
1569         status = kzalloc(sizeof(*status) + data_size, GFP_KERNEL);      \
1570         if (!status)                                                    \
1571                 return ERR_PTR(-ENOMEM);                                \
1572                                                                         \
1573         /* copy all the common fields */                                \
1574         status->replay_ctr = data->replay_ctr;                          \
1575         status->pattern_number = data->pattern_number;                  \
1576         status->non_qos_seq_ctr = data->non_qos_seq_ctr;                \
1577         memcpy(status->qos_seq_ctr, data->qos_seq_ctr,                  \
1578                sizeof(status->qos_seq_ctr));                            \
1579         status->wakeup_reasons = data->wakeup_reasons;                  \
1580         status->num_of_gtk_rekeys = data->num_of_gtk_rekeys;            \
1581         status->received_beacons = data->received_beacons;              \
1582         status->wake_packet_length = data->wake_packet_length;          \
1583         status->wake_packet_bufsize = data->wake_packet_bufsize;        \
1584         memcpy(status->wake_packet, data->wake_packet,                  \
1585                le32_to_cpu(status->wake_packet_bufsize));               \
1586                                                                         \
1587         return status;                                                  \
1588 }
1589
1590 iwl_mvm_parse_wowlan_status_common(v6)
1591 iwl_mvm_parse_wowlan_status_common(v7)
1592 iwl_mvm_parse_wowlan_status_common(v9)
1593
1594 struct iwl_wowlan_status *iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm)
1595 {
1596         struct iwl_wowlan_status *status;
1597         struct iwl_host_cmd cmd = {
1598                 .id = WOWLAN_GET_STATUSES,
1599                 .flags = CMD_WANT_SKB,
1600         };
1601         int ret, len;
1602         u8 notif_ver;
1603
1604         lockdep_assert_held(&mvm->mutex);
1605
1606         ret = iwl_mvm_send_cmd(mvm, &cmd);
1607         if (ret) {
1608                 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
1609                 return ERR_PTR(ret);
1610         }
1611
1612         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1613
1614         /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
1615         notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1616                                             WOWLAN_GET_STATUSES, 7);
1617
1618         if (!fw_has_api(&mvm->fw->ucode_capa,
1619                         IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
1620                 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
1621
1622                 status = iwl_mvm_parse_wowlan_status_common_v6(mvm,
1623                                                                cmd.resp_pkt->data,
1624                                                                len);
1625                 if (IS_ERR(status))
1626                         goto out_free_resp;
1627
1628                 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
1629                              sizeof(status->gtk[0].key));
1630                 BUILD_BUG_ON(sizeof(v6->gtk.tkip_mic_key) >
1631                              sizeof(status->gtk[0].tkip_mic_key));
1632
1633                 /* copy GTK info to the right place */
1634                 memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
1635                        sizeof(v6->gtk.decrypt_key));
1636                 memcpy(status->gtk[0].tkip_mic_key, v6->gtk.tkip_mic_key,
1637                        sizeof(v6->gtk.tkip_mic_key));
1638                 memcpy(&status->gtk[0].rsc, &v6->gtk.rsc,
1639                        sizeof(status->gtk[0].rsc));
1640
1641                 /* hardcode the key length to 16 since v6 only supports 16 */
1642                 status->gtk[0].key_len = 16;
1643
1644                 /*
1645                  * The key index only uses 2 bits (values 0 to 3) and
1646                  * we always set bit 7 which means this is the
1647                  * currently used key.
1648                  */
1649                 status->gtk[0].key_flags = v6->gtk.key_index | BIT(7);
1650         } else if (notif_ver == 7) {
1651                 struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
1652
1653                 status = iwl_mvm_parse_wowlan_status_common_v7(mvm,
1654                                                                cmd.resp_pkt->data,
1655                                                                len);
1656                 if (IS_ERR(status))
1657                         goto out_free_resp;
1658
1659                 status->gtk[0] = v7->gtk[0];
1660                 status->igtk[0] = v7->igtk[0];
1661         } else if (notif_ver == 9) {
1662                 struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
1663
1664                 status = iwl_mvm_parse_wowlan_status_common_v9(mvm,
1665                                                                cmd.resp_pkt->data,
1666                                                                len);
1667                 if (IS_ERR(status))
1668                         goto out_free_resp;
1669
1670                 status->gtk[0] = v9->gtk[0];
1671                 status->igtk[0] = v9->igtk[0];
1672
1673                 status->tid_tear_down = v9->tid_tear_down;
1674         } else {
1675                 IWL_ERR(mvm,
1676                         "Firmware advertises unknown WoWLAN status response %d!\n",
1677                         notif_ver);
1678                 status = ERR_PTR(-EIO);
1679         }
1680
1681 out_free_resp:
1682         iwl_free_resp(&cmd);
1683         return status;
1684 }
1685
1686 static struct iwl_wowlan_status *
1687 iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm)
1688 {
1689         int ret;
1690
1691         /* only for tracing for now */
1692         ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL);
1693         if (ret)
1694                 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
1695
1696         return iwl_mvm_send_wowlan_get_status(mvm);
1697 }
1698
1699 /* releases the MVM mutex */
1700 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
1701                                          struct ieee80211_vif *vif)
1702 {
1703         struct iwl_wowlan_status_data status;
1704         struct iwl_wowlan_status *fw_status;
1705         int i;
1706         bool keep;
1707         struct iwl_mvm_sta *mvm_ap_sta;
1708
1709         fw_status = iwl_mvm_get_wakeup_status(mvm);
1710         if (IS_ERR_OR_NULL(fw_status))
1711                 goto out_unlock;
1712
1713         IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
1714                          le32_to_cpu(fw_status->wakeup_reasons));
1715
1716         status.pattern_number = le16_to_cpu(fw_status->pattern_number);
1717         for (i = 0; i < 8; i++)
1718                 status.qos_seq_ctr[i] =
1719                         le16_to_cpu(fw_status->qos_seq_ctr[i]);
1720         status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons);
1721         status.wake_packet_length =
1722                 le32_to_cpu(fw_status->wake_packet_length);
1723         status.wake_packet_bufsize =
1724                 le32_to_cpu(fw_status->wake_packet_bufsize);
1725         status.wake_packet = fw_status->wake_packet;
1726
1727         /* still at hard-coded place 0 for D3 image */
1728         mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
1729         if (!mvm_ap_sta)
1730                 goto out_free;
1731
1732         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1733                 u16 seq = status.qos_seq_ctr[i];
1734                 /* firmware stores last-used value, we store next value */
1735                 seq += 0x10;
1736                 mvm_ap_sta->tid_data[i].seq_number = seq;
1737         }
1738
1739         if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
1740                 i = mvm->offload_tid;
1741                 iwl_trans_set_q_ptrs(mvm->trans,
1742                                      mvm_ap_sta->tid_data[i].txq_id,
1743                                      mvm_ap_sta->tid_data[i].seq_number >> 4);
1744         }
1745
1746         /* now we have all the data we need, unlock to avoid mac80211 issues */
1747         mutex_unlock(&mvm->mutex);
1748
1749         iwl_mvm_report_wakeup_reasons(mvm, vif, &status);
1750
1751         keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status);
1752
1753         kfree(fw_status);
1754         return keep;
1755
1756 out_free:
1757         kfree(fw_status);
1758 out_unlock:
1759         mutex_unlock(&mvm->mutex);
1760         return false;
1761 }
1762
1763 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
1764                           IWL_SCAN_MAX_PROFILES)
1765
1766 struct iwl_mvm_nd_query_results {
1767         u32 matched_profiles;
1768         u8 matches[ND_QUERY_BUF_LEN];
1769 };
1770
1771 static int
1772 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
1773                                 struct iwl_mvm_nd_query_results *results)
1774 {
1775         struct iwl_scan_offload_profiles_query *query;
1776         struct iwl_host_cmd cmd = {
1777                 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
1778                 .flags = CMD_WANT_SKB,
1779         };
1780         int ret, len;
1781         size_t query_len, matches_len;
1782         int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
1783
1784         ret = iwl_mvm_send_cmd(mvm, &cmd);
1785         if (ret) {
1786                 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
1787                 return ret;
1788         }
1789
1790         if (fw_has_api(&mvm->fw->ucode_capa,
1791                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1792                 query_len = sizeof(struct iwl_scan_offload_profiles_query);
1793                 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
1794                         max_profiles;
1795         } else {
1796                 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
1797                 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
1798                         max_profiles;
1799         }
1800
1801         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1802         if (len < query_len) {
1803                 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
1804                 ret = -EIO;
1805                 goto out_free_resp;
1806         }
1807
1808         query = (void *)cmd.resp_pkt->data;
1809
1810         results->matched_profiles = le32_to_cpu(query->matched_profiles);
1811         memcpy(results->matches, query->matches, matches_len);
1812
1813 #ifdef CONFIG_IWLWIFI_DEBUGFS
1814         mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
1815 #endif
1816
1817 out_free_resp:
1818         iwl_free_resp(&cmd);
1819         return ret;
1820 }
1821
1822 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
1823                                          struct iwl_mvm_nd_query_results *query,
1824                                          int idx)
1825 {
1826         int n_chans = 0, i;
1827
1828         if (fw_has_api(&mvm->fw->ucode_capa,
1829                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1830                 struct iwl_scan_offload_profile_match *matches =
1831                         (struct iwl_scan_offload_profile_match *)query->matches;
1832
1833                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
1834                         n_chans += hweight8(matches[idx].matching_channels[i]);
1835         } else {
1836                 struct iwl_scan_offload_profile_match_v1 *matches =
1837                         (struct iwl_scan_offload_profile_match_v1 *)query->matches;
1838
1839                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
1840                         n_chans += hweight8(matches[idx].matching_channels[i]);
1841         }
1842
1843         return n_chans;
1844 }
1845
1846 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
1847                                     struct iwl_mvm_nd_query_results *query,
1848                                     struct cfg80211_wowlan_nd_match *match,
1849                                     int idx)
1850 {
1851         int i;
1852
1853         if (fw_has_api(&mvm->fw->ucode_capa,
1854                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1855                 struct iwl_scan_offload_profile_match *matches =
1856                         (struct iwl_scan_offload_profile_match *)query->matches;
1857
1858                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
1859                         if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
1860                                 match->channels[match->n_channels++] =
1861                                         mvm->nd_channels[i]->center_freq;
1862         } else {
1863                 struct iwl_scan_offload_profile_match_v1 *matches =
1864                         (struct iwl_scan_offload_profile_match_v1 *)query->matches;
1865
1866                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
1867                         if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
1868                                 match->channels[match->n_channels++] =
1869                                         mvm->nd_channels[i]->center_freq;
1870         }
1871 }
1872
1873 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
1874                                             struct ieee80211_vif *vif)
1875 {
1876         struct cfg80211_wowlan_nd_info *net_detect = NULL;
1877         struct cfg80211_wowlan_wakeup wakeup = {
1878                 .pattern_idx = -1,
1879         };
1880         struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1881         struct iwl_mvm_nd_query_results query;
1882         struct iwl_wowlan_status *fw_status;
1883         unsigned long matched_profiles;
1884         u32 reasons = 0;
1885         int i, n_matches, ret;
1886
1887         fw_status = iwl_mvm_get_wakeup_status(mvm);
1888         if (!IS_ERR_OR_NULL(fw_status)) {
1889                 reasons = le32_to_cpu(fw_status->wakeup_reasons);
1890                 kfree(fw_status);
1891         }
1892
1893         if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1894                 wakeup.rfkill_release = true;
1895
1896         if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
1897                 goto out;
1898
1899         ret = iwl_mvm_netdetect_query_results(mvm, &query);
1900         if (ret || !query.matched_profiles) {
1901                 wakeup_report = NULL;
1902                 goto out;
1903         }
1904
1905         matched_profiles = query.matched_profiles;
1906         if (mvm->n_nd_match_sets) {
1907                 n_matches = hweight_long(matched_profiles);
1908         } else {
1909                 IWL_ERR(mvm, "no net detect match information available\n");
1910                 n_matches = 0;
1911         }
1912
1913         net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
1914                              GFP_KERNEL);
1915         if (!net_detect || !n_matches)
1916                 goto out_report_nd;
1917
1918         for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
1919                 struct cfg80211_wowlan_nd_match *match;
1920                 int idx, n_channels = 0;
1921
1922                 n_channels = iwl_mvm_query_num_match_chans(mvm, &query, i);
1923
1924                 match = kzalloc(struct_size(match, channels, n_channels),
1925                                 GFP_KERNEL);
1926                 if (!match)
1927                         goto out_report_nd;
1928
1929                 net_detect->matches[net_detect->n_matches++] = match;
1930
1931                 /* We inverted the order of the SSIDs in the scan
1932                  * request, so invert the index here.
1933                  */
1934                 idx = mvm->n_nd_match_sets - i - 1;
1935                 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
1936                 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
1937                        match->ssid.ssid_len);
1938
1939                 if (mvm->n_nd_channels < n_channels)
1940                         continue;
1941
1942                 iwl_mvm_query_set_freqs(mvm, &query, match, i);
1943         }
1944
1945 out_report_nd:
1946         wakeup.net_detect = net_detect;
1947 out:
1948         iwl_mvm_free_nd(mvm);
1949
1950         mutex_unlock(&mvm->mutex);
1951         ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1952
1953         if (net_detect) {
1954                 for (i = 0; i < net_detect->n_matches; i++)
1955                         kfree(net_detect->matches[i]);
1956                 kfree(net_detect);
1957         }
1958 }
1959
1960 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
1961                                        struct ieee80211_vif *vif)
1962 {
1963         /* skip the one we keep connection on */
1964         if (data == vif)
1965                 return;
1966
1967         if (vif->type == NL80211_IFTYPE_STATION)
1968                 ieee80211_resume_disconnect(vif);
1969 }
1970
1971 static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
1972 {
1973         struct error_table_start {
1974                 /* cf. struct iwl_error_event_table */
1975                 u32 valid;
1976                 __le32 err_id;
1977         } err_info;
1978
1979         if (!base)
1980                 return false;
1981
1982         iwl_trans_read_mem_bytes(trans, base,
1983                                  &err_info, sizeof(err_info));
1984         if (err_info.valid && err_id)
1985                 *err_id = le32_to_cpu(err_info.err_id);
1986
1987         return !!err_info.valid;
1988 }
1989
1990 static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
1991                                    struct ieee80211_vif *vif)
1992 {
1993         u32 err_id;
1994
1995         /* check for lmac1 error */
1996         if (iwl_mvm_rt_status(mvm->trans,
1997                               mvm->trans->dbg.lmac_error_event_table[0],
1998                               &err_id)) {
1999                 if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2000                         struct cfg80211_wowlan_wakeup wakeup = {
2001                                 .rfkill_release = true,
2002                         };
2003                         ieee80211_report_wowlan_wakeup(vif, &wakeup,
2004                                                        GFP_KERNEL);
2005                 }
2006                 return true;
2007         }
2008
2009         /* check if we have lmac2 set and check for error */
2010         if (iwl_mvm_rt_status(mvm->trans,
2011                               mvm->trans->dbg.lmac_error_event_table[1], NULL))
2012                 return true;
2013
2014         /* check for umac error */
2015         if (iwl_mvm_rt_status(mvm->trans,
2016                               mvm->trans->dbg.umac_error_event_table, NULL))
2017                 return true;
2018
2019         return false;
2020 }
2021
2022 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
2023 {
2024         struct ieee80211_vif *vif = NULL;
2025         int ret = 1;
2026         enum iwl_d3_status d3_status;
2027         bool keep = false;
2028         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2029                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2030         bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
2031                                       IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
2032
2033         mutex_lock(&mvm->mutex);
2034
2035         /* get the BSS vif pointer again */
2036         vif = iwl_mvm_get_bss_vif(mvm);
2037         if (IS_ERR_OR_NULL(vif))
2038                 goto err;
2039
2040         iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2041
2042         if (iwl_mvm_check_rt_status(mvm, vif)) {
2043                 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
2044                 iwl_mvm_dump_nic_error_log(mvm);
2045                 iwl_dbg_tlv_time_point(&mvm->fwrt,
2046                                        IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
2047                 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
2048                                         false, 0);
2049                 ret = 1;
2050                 goto err;
2051         }
2052
2053         iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_HOST_D3_END,
2054                                NULL);
2055
2056         ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image);
2057         if (ret)
2058                 goto err;
2059
2060         if (d3_status != IWL_D3_STATUS_ALIVE) {
2061                 IWL_INFO(mvm, "Device was reset during suspend\n");
2062                 goto err;
2063         }
2064
2065         if (d0i3_first) {
2066                 struct iwl_host_cmd cmd = {
2067                         .id = D0I3_END_CMD,
2068                         .flags = CMD_WANT_SKB,
2069                 };
2070                 int len;
2071
2072                 ret = iwl_mvm_send_cmd(mvm, &cmd);
2073                 if (ret < 0) {
2074                         IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
2075                                 ret);
2076                         goto err;
2077                 }
2078                 switch (mvm->cmd_ver.d0i3_resp) {
2079                 case 0:
2080                         break;
2081                 case 1:
2082                         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
2083                         if (len != sizeof(u32)) {
2084                                 IWL_ERR(mvm,
2085                                         "Error with D0I3_END_CMD response size (%d)\n",
2086                                         len);
2087                                 goto err;
2088                         }
2089                         if (IWL_D0I3_RESET_REQUIRE &
2090                             le32_to_cpu(*(__le32 *)cmd.resp_pkt->data)) {
2091                                 iwl_write32(mvm->trans, CSR_RESET,
2092                                             CSR_RESET_REG_FLAG_FORCE_NMI);
2093                                 iwl_free_resp(&cmd);
2094                         }
2095                         break;
2096                 default:
2097                         WARN_ON(1);
2098                 }
2099         }
2100
2101         /*
2102          * Query the current location and source from the D3 firmware so we
2103          * can play it back when we re-intiailize the D0 firmware
2104          */
2105         iwl_mvm_update_changed_regdom(mvm);
2106
2107         /* Re-configure PPAG settings */
2108         iwl_mvm_ppag_send_cmd(mvm);
2109
2110         if (!unified_image)
2111                 /*  Re-configure default SAR profile */
2112                 iwl_mvm_sar_select_profile(mvm, 1, 1);
2113
2114         if (mvm->net_detect) {
2115                 /* If this is a non-unified image, we restart the FW,
2116                  * so no need to stop the netdetect scan.  If that
2117                  * fails, continue and try to get the wake-up reasons,
2118                  * but trigger a HW restart by keeping a failure code
2119                  * in ret.
2120                  */
2121                 if (unified_image)
2122                         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
2123                                                 false);
2124
2125                 iwl_mvm_query_netdetect_reasons(mvm, vif);
2126                 /* has unlocked the mutex, so skip that */
2127                 goto out;
2128         } else {
2129                 keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
2130 #ifdef CONFIG_IWLWIFI_DEBUGFS
2131                 if (keep)
2132                         mvm->keep_vif = vif;
2133 #endif
2134                 /* has unlocked the mutex, so skip that */
2135                 goto out_iterate;
2136         }
2137
2138 err:
2139         iwl_mvm_free_nd(mvm);
2140         mutex_unlock(&mvm->mutex);
2141
2142 out_iterate:
2143         if (!test)
2144                 ieee80211_iterate_active_interfaces_mtx(mvm->hw,
2145                         IEEE80211_IFACE_ITER_NORMAL,
2146                         iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);
2147
2148 out:
2149         clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
2150
2151         /* no need to reset the device in unified images, if successful */
2152         if (unified_image && !ret) {
2153                 /* nothing else to do if we already sent D0I3_END_CMD */
2154                 if (d0i3_first)
2155                         return 0;
2156
2157                 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2158                 if (!ret)
2159                         return 0;
2160         }
2161
2162         /*
2163          * Reconfigure the device in one of the following cases:
2164          * 1. We are not using a unified image
2165          * 2. We are using a unified image but had an error while exiting D3
2166          */
2167         set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
2168
2169         return 1;
2170 }
2171
2172 static int iwl_mvm_resume_d3(struct iwl_mvm *mvm)
2173 {
2174         iwl_trans_resume(mvm->trans);
2175
2176         return __iwl_mvm_resume(mvm, false);
2177 }
2178
2179 int iwl_mvm_resume(struct ieee80211_hw *hw)
2180 {
2181         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2182         int ret;
2183
2184         ret = iwl_mvm_resume_d3(mvm);
2185
2186         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2187
2188         iwl_mvm_resume_tcm(mvm);
2189
2190         iwl_fw_runtime_resume(&mvm->fwrt);
2191
2192         return ret;
2193 }
2194
2195 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2196 {
2197         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2198
2199         device_set_wakeup_enable(mvm->trans->dev, enabled);
2200 }
2201
2202 #ifdef CONFIG_IWLWIFI_DEBUGFS
2203 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
2204 {
2205         struct iwl_mvm *mvm = inode->i_private;
2206         int err;
2207
2208         if (mvm->d3_test_active)
2209                 return -EBUSY;
2210
2211         file->private_data = inode->i_private;
2212
2213         synchronize_net();
2214
2215         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
2216
2217         iwl_mvm_pause_tcm(mvm, true);
2218
2219         iwl_fw_runtime_suspend(&mvm->fwrt);
2220
2221         /* start pseudo D3 */
2222         rtnl_lock();
2223         err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
2224         rtnl_unlock();
2225         if (err > 0)
2226                 err = -EINVAL;
2227         if (err)
2228                 return err;
2229
2230         mvm->d3_test_active = true;
2231         mvm->keep_vif = NULL;
2232         return 0;
2233 }
2234
2235 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
2236                                     size_t count, loff_t *ppos)
2237 {
2238         struct iwl_mvm *mvm = file->private_data;
2239         u32 pme_asserted;
2240
2241         while (true) {
2242                 /* read pme_ptr if available */
2243                 if (mvm->d3_test_pme_ptr) {
2244                         pme_asserted = iwl_trans_read_mem32(mvm->trans,
2245                                                 mvm->d3_test_pme_ptr);
2246                         if (pme_asserted)
2247                                 break;
2248                 }
2249
2250                 if (msleep_interruptible(100))
2251                         break;
2252         }
2253
2254         return 0;
2255 }
2256
2257 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
2258                                               struct ieee80211_vif *vif)
2259 {
2260         /* skip the one we keep connection on */
2261         if (_data == vif)
2262                 return;
2263
2264         if (vif->type == NL80211_IFTYPE_STATION)
2265                 ieee80211_connection_loss(vif);
2266 }
2267
2268 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
2269 {
2270         struct iwl_mvm *mvm = inode->i_private;
2271         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2272                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2273
2274         mvm->d3_test_active = false;
2275
2276         iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2277
2278         rtnl_lock();
2279         __iwl_mvm_resume(mvm, true);
2280         rtnl_unlock();
2281
2282         iwl_mvm_resume_tcm(mvm);
2283
2284         iwl_fw_runtime_resume(&mvm->fwrt);
2285
2286         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2287
2288         iwl_abort_notification_waits(&mvm->notif_wait);
2289         if (!unified_image) {
2290                 int remaining_time = 10;
2291
2292                 ieee80211_restart_hw(mvm->hw);
2293
2294                 /* wait for restart and disconnect all interfaces */
2295                 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2296                        remaining_time > 0) {
2297                         remaining_time--;
2298                         msleep(1000);
2299                 }
2300
2301                 if (remaining_time == 0)
2302                         IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
2303         }
2304
2305         ieee80211_iterate_active_interfaces_atomic(
2306                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2307                 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
2308
2309         return 0;
2310 }
2311
2312 const struct file_operations iwl_dbgfs_d3_test_ops = {
2313         .llseek = no_llseek,
2314         .open = iwl_mvm_d3_test_open,
2315         .read = iwl_mvm_d3_test_read,
2316         .release = iwl_mvm_d3_test_release,
2317 };
2318 #endif