drivers/net/wireless/intel/iwlwifi/dvm/lib.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /******************************************************************************
   3  *
   4  * Copyright(c) 2008 - 2014, 2022 Intel Corporation. All rights reserved.
   5  *****************************************************************************/
   6 #include <linux/etherdevice.h>
   7 #include <linux/kernel.h>
   8 #include <linux/module.h>
   9 #include <linux/sched.h>
  10 #include <net/mac80211.h>
  11
  12 #include "iwl-io.h"
  13 #include "iwl-agn-hw.h"
  14 #include "iwl-trans.h"
  15 #include "iwl-modparams.h"
  16
  17 #include "dev.h"
  18 #include "agn.h"
  19
  20 int iwlagn_hw_valid_rtc_data_addr(u32 addr)
  21 {
  22         return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) &&
  23                 (addr < IWLAGN_RTC_DATA_UPPER_BOUND);
  24 }
  25
  26 int iwlagn_send_tx_power(struct iwl_priv *priv)
  27 {
  28         struct iwlagn_tx_power_dbm_cmd tx_power_cmd;
  29         u8 tx_ant_cfg_cmd;
  30
  31         if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
  32                       "TX Power requested while scanning!\n"))
  33                 return -EAGAIN;
  34
  35         /* half dBm need to multiply */
  36         tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
  37
  38         if (tx_power_cmd.global_lmt > priv->nvm_data->max_tx_pwr_half_dbm) {
  39                 /*
  40                  * For the newer devices which using enhanced/extend tx power
  41                  * table in EEPROM, the format is in half dBm. driver need to
  42                  * convert to dBm format before report to mac80211.
  43                  * By doing so, there is a possibility of 1/2 dBm resolution
  44                  * lost. driver will perform "round-up" operation before
  45                  * reporting, but it will cause 1/2 dBm tx power over the
  46                  * regulatory limit. Perform the checking here, if the
  47                  * "tx_power_user_lmt" is higher than EEPROM value (in
  48                  * half-dBm format), lower the tx power based on EEPROM
  49                  */
  50                 tx_power_cmd.global_lmt =
  51                         priv->nvm_data->max_tx_pwr_half_dbm;
  52         }
  53         tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED;
  54         tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO;
  55
  56         if (IWL_UCODE_API(priv->fw->ucode_ver) == 1)
  57                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1;
  58         else
  59                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
  60
  61         return iwl_dvm_send_cmd_pdu(priv, tx_ant_cfg_cmd, 0,
  62                         sizeof(tx_power_cmd), &tx_power_cmd);
  63 }
  64
  65 void iwlagn_temperature(struct iwl_priv *priv)
  66 {
  67         lockdep_assert_held(&priv->statistics.lock);
  68
  69         /* store temperature from correct statistics (in Celsius) */
  70         priv->temperature = le32_to_cpu(priv->statistics.common.temperature);
  71         iwl_tt_handler(priv);
  72 }
  73
  74 int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum nl80211_band band)
  75 {
  76         int idx = 0;
  77         int band_offset = 0;
  78
  79         /* HT rate format: mac80211 wants an MCS number, which is just LSB */
  80         if (rate_n_flags & RATE_MCS_HT_MSK) {
  81                 idx = (rate_n_flags & 0xff);
  82                 return idx;
  83         /* Legacy rate format, search for match in table */
  84         } else {
  85                 if (band == NL80211_BAND_5GHZ)
  86                         band_offset = IWL_FIRST_OFDM_RATE;
  87                 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
  88                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
  89                                 return idx - band_offset;
  90         }
  91
  92         return -1;
  93 }
  94
  95 int iwlagn_manage_ibss_station(struct iwl_priv *priv,
  96                                struct ieee80211_vif *vif, bool add)
  97 {
  98         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
  99
 100         if (add)
 101                 return iwlagn_add_bssid_station(priv, vif_priv->ctx,
 102                                                 vif->bss_conf.bssid,
 103                                                 &vif_priv->ibss_bssid_sta_id);
 104         return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
 105                                   vif->bss_conf.bssid);
 106 }
 107
 108 /*
 109  * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode
 110  *
 111  * pre-requirements:
 112  *  1. acquire mutex before calling
 113  *  2. make sure rf is on and not in exit state
 114  */
 115 int iwlagn_txfifo_flush(struct iwl_priv *priv, u32 scd_q_msk)
 116 {
 117         struct iwl_txfifo_flush_cmd_v3 flush_cmd_v3 = {
 118                 .flush_control = cpu_to_le16(IWL_DROP_ALL),
 119         };
 120         struct iwl_txfifo_flush_cmd_v2 flush_cmd_v2 = {
 121                 .flush_control = cpu_to_le16(IWL_DROP_ALL),
 122         };
 123
 124         u32 queue_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
 125                             IWL_SCD_BE_MSK | IWL_SCD_BK_MSK | IWL_SCD_MGMT_MSK;
 126
 127         if ((priv->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
 128                 queue_control |= IWL_PAN_SCD_VO_MSK | IWL_PAN_SCD_VI_MSK |
 129                                  IWL_PAN_SCD_BE_MSK | IWL_PAN_SCD_BK_MSK |
 130                                  IWL_PAN_SCD_MGMT_MSK |
 131                                  IWL_PAN_SCD_MULTICAST_MSK;
 132
 133         if (priv->nvm_data->sku_cap_11n_enable)
 134                 queue_control |= IWL_AGG_TX_QUEUE_MSK;
 135
 136         if (scd_q_msk)
 137                 queue_control = scd_q_msk;
 138
 139         IWL_DEBUG_INFO(priv, "queue control: 0x%x\n", queue_control);
 140         flush_cmd_v3.queue_control = cpu_to_le32(queue_control);
 141         flush_cmd_v2.queue_control = cpu_to_le16((u16)queue_control);
 142
 143         if (IWL_UCODE_API(priv->fw->ucode_ver) > 2)
 144                 return iwl_dvm_send_cmd_pdu(priv, REPLY_TXFIFO_FLUSH, 0,
 145                                             sizeof(flush_cmd_v3),
 146                                             &flush_cmd_v3);
 147         return iwl_dvm_send_cmd_pdu(priv, REPLY_TXFIFO_FLUSH, 0,
 148                                     sizeof(flush_cmd_v2), &flush_cmd_v2);
 149 }
 150
 151 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv)
 152 {
 153         mutex_lock(&priv->mutex);
 154         ieee80211_stop_queues(priv->hw);
 155         if (iwlagn_txfifo_flush(priv, 0)) {
 156                 IWL_ERR(priv, "flush request fail\n");
 157                 goto done;
 158         }
 159         IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
 160         iwl_trans_wait_tx_queues_empty(priv->trans, 0xffffffff);
 161 done:
 162         ieee80211_wake_queues(priv->hw);
 163         mutex_unlock(&priv->mutex);
 164 }
 165
 166 /*
 167  * BT coex
 168  */
 169 /* Notmal TDM */
 170 static const __le32 iwlagn_def_3w_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 171         cpu_to_le32(0xaaaaaaaa),
 172         cpu_to_le32(0xaaaaaaaa),
 173         cpu_to_le32(0xaeaaaaaa),
 174         cpu_to_le32(0xaaaaaaaa),
 175         cpu_to_le32(0xcc00ff28),
 176         cpu_to_le32(0x0000aaaa),
 177         cpu_to_le32(0xcc00aaaa),
 178         cpu_to_le32(0x0000aaaa),
 179         cpu_to_le32(0xc0004000),
 180         cpu_to_le32(0x00004000),
 181         cpu_to_le32(0xf0005000),
 182         cpu_to_le32(0xf0005000),
 183 };
 184
 185 /* Full concurrency */
 186 static const __le32 iwlagn_concurrent_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 187         cpu_to_le32(0xaaaaaaaa),
 188         cpu_to_le32(0xaaaaaaaa),
 189         cpu_to_le32(0xaaaaaaaa),
 190         cpu_to_le32(0xaaaaaaaa),
 191         cpu_to_le32(0xaaaaaaaa),
 192         cpu_to_le32(0xaaaaaaaa),
 193         cpu_to_le32(0xaaaaaaaa),
 194         cpu_to_le32(0xaaaaaaaa),
 195         cpu_to_le32(0x00000000),
 196         cpu_to_le32(0x00000000),
 197         cpu_to_le32(0x00000000),
 198         cpu_to_le32(0x00000000),
 199 };
 200
 201 void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
 202 {
 203         struct iwl_basic_bt_cmd basic = {
 204                 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
 205                 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
 206                 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
 207                 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
 208         };
 209         struct iwl_bt_cmd_v1 bt_cmd_v1;
 210         struct iwl_bt_cmd_v2 bt_cmd_v2;
 211         int ret;
 212
 213         BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
 214                         sizeof(basic.bt3_lookup_table));
 215
 216         if (priv->lib->bt_params) {
 217                 /*
 218                  * newer generation of devices (2000 series and newer)
 219                  * use the version 2 of the bt command
 220                  * we need to make sure sending the host command
 221                  * with correct data structure to avoid uCode assert
 222                  */
 223                 if (priv->lib->bt_params->bt_session_2) {
 224                         bt_cmd_v2.prio_boost = cpu_to_le32(
 225                                 priv->lib->bt_params->bt_prio_boost);
 226                         bt_cmd_v2.tx_prio_boost = 0;
 227                         bt_cmd_v2.rx_prio_boost = 0;
 228                 } else {
 229                         /* older version only has 8 bits */
 230                         WARN_ON(priv->lib->bt_params->bt_prio_boost & ~0xFF);
 231                         bt_cmd_v1.prio_boost =
 232                                 priv->lib->bt_params->bt_prio_boost;
 233                         bt_cmd_v1.tx_prio_boost = 0;
 234                         bt_cmd_v1.rx_prio_boost = 0;
 235                 }
 236         } else {
 237                 IWL_ERR(priv, "failed to construct BT Coex Config\n");
 238                 return;
 239         }
 240
 241         /*
 242          * Possible situations when BT needs to take over for receive,
 243          * at the same time where STA needs to response to AP's frame(s),
 244          * reduce the tx power of the required response frames, by that,
 245          * allow the concurrent BT receive & WiFi transmit
 246          * (BT - ANT A, WiFi -ANT B), without interference to one another
 247          *
 248          * Reduced tx power apply to control frames only (ACK/Back/CTS)
 249          * when indicated by the BT config command
 250          */
 251         basic.kill_ack_mask = priv->kill_ack_mask;
 252         basic.kill_cts_mask = priv->kill_cts_mask;
 253         if (priv->reduced_txpower)
 254                 basic.reduce_txpower = IWLAGN_BT_REDUCED_TX_PWR;
 255         basic.valid = priv->bt_valid;
 256
 257         /*
 258          * Configure BT coex mode to "no coexistence" when the
 259          * user disabled BT coexistence, we have no interface
 260          * (might be in monitor mode), or the interface is in
 261          * IBSS mode (no proper uCode support for coex then).
 262          */
 263         if (!iwlwifi_mod_params.bt_coex_active ||
 264             priv->iw_mode == NL80211_IFTYPE_ADHOC) {
 265                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
 266         } else {
 267                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
 268                                         IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
 269
 270                 if (!priv->bt_enable_pspoll)
 271                         basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 272                 else
 273                         basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 274
 275                 if (priv->bt_ch_announce)
 276                         basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
 277                 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
 278         }
 279         priv->bt_enable_flag = basic.flags;
 280         if (priv->bt_full_concurrent)
 281                 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
 282                         sizeof(iwlagn_concurrent_lookup));
 283         else
 284                 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
 285                         sizeof(iwlagn_def_3w_lookup));
 286
 287         IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
 288                        basic.flags ? "active" : "disabled",
 289                        priv->bt_full_concurrent ?
 290                        "full concurrency" : "3-wire");
 291
 292         if (priv->lib->bt_params->bt_session_2) {
 293                 memcpy(&bt_cmd_v2.basic, &basic,
 294                         sizeof(basic));
 295                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 296                         0, sizeof(bt_cmd_v2), &bt_cmd_v2);
 297         } else {
 298                 memcpy(&bt_cmd_v1.basic, &basic,
 299                         sizeof(basic));
 300                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 301                         0, sizeof(bt_cmd_v1), &bt_cmd_v1);
 302         }
 303         if (ret)
 304                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 305
 306 }
 307
 308 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
 309 {
 310         struct iwl_rxon_context *ctx, *found_ctx = NULL;
 311         bool found_ap = false;
 312
 313         lockdep_assert_held(&priv->mutex);
 314
 315         /* Check whether AP or GO mode is active. */
 316         if (rssi_ena) {
 317                 for_each_context(priv, ctx) {
 318                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
 319                             iwl_is_associated_ctx(ctx)) {
 320                                 found_ap = true;
 321                                 break;
 322                         }
 323                 }
 324         }
 325
 326         /*
 327          * If disable was received or If GO/AP mode, disable RSSI
 328          * measurements.
 329          */
 330         if (!rssi_ena || found_ap) {
 331                 if (priv->cur_rssi_ctx) {
 332                         ctx = priv->cur_rssi_ctx;
 333                         ieee80211_disable_rssi_reports(ctx->vif);
 334                         priv->cur_rssi_ctx = NULL;
 335                 }
 336                 return;
 337         }
 338
 339         /*
 340          * If rssi measurements need to be enabled, consider all cases now.
 341          * Figure out how many contexts are active.
 342          */
 343         for_each_context(priv, ctx) {
 344                 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
 345                     iwl_is_associated_ctx(ctx)) {
 346                         found_ctx = ctx;
 347                         break;
 348                 }
 349         }
 350
 351         /*
 352          * rssi monitor already enabled for the correct interface...nothing
 353          * to do.
 354          */
 355         if (found_ctx == priv->cur_rssi_ctx)
 356                 return;
 357
 358         /*
 359          * Figure out if rssi monitor is currently enabled, and needs
 360          * to be changed. If rssi monitor is already enabled, disable
 361          * it first else just enable rssi measurements on the
 362          * interface found above.
 363          */
 364         if (priv->cur_rssi_ctx) {
 365                 ctx = priv->cur_rssi_ctx;
 366                 if (ctx->vif)
 367                         ieee80211_disable_rssi_reports(ctx->vif);
 368         }
 369
 370         priv->cur_rssi_ctx = found_ctx;
 371
 372         if (!found_ctx)
 373                 return;
 374
 375         ieee80211_enable_rssi_reports(found_ctx->vif,
 376                         IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
 377                         IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
 378 }
 379
 380 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
 381 {
 382         return (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 383                 BT_UART_MSG_FRAME3SCOESCO_POS;
 384 }
 385
 386 static void iwlagn_bt_traffic_change_work(struct work_struct *work)
 387 {
 388         struct iwl_priv *priv =
 389                 container_of(work, struct iwl_priv, bt_traffic_change_work);
 390         struct iwl_rxon_context *ctx;
 391         int smps_request = -1;
 392
 393         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 394                 /* bt coex disabled */
 395                 return;
 396         }
 397
 398         /*
 399          * Note: bt_traffic_load can be overridden by scan complete and
 400          * coex profile notifications. Ignore that since only bad consequence
 401          * can be not matching debug print with actual state.
 402          */
 403         IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
 404                        priv->bt_traffic_load);
 405
 406         switch (priv->bt_traffic_load) {
 407         case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
 408                 if (priv->bt_status)
 409                         smps_request = IEEE80211_SMPS_DYNAMIC;
 410                 else
 411                         smps_request = IEEE80211_SMPS_AUTOMATIC;
 412                 break;
 413         case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
 414                 smps_request = IEEE80211_SMPS_DYNAMIC;
 415                 break;
 416         case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
 417         case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
 418                 smps_request = IEEE80211_SMPS_STATIC;
 419                 break;
 420         default:
 421                 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
 422                         priv->bt_traffic_load);
 423                 break;
 424         }
 425
 426         mutex_lock(&priv->mutex);
 427
 428         /*
 429          * We can not send command to firmware while scanning. When the scan
 430          * complete we will schedule this work again. We do check with mutex
 431          * locked to prevent new scan request to arrive. We do not check
 432          * STATUS_SCANNING to avoid race when queue_work two times from
 433          * different notifications, but quit and not perform any work at all.
 434          */
 435         if (test_bit(STATUS_SCAN_HW, &priv->status))
 436                 goto out;
 437
 438         iwl_update_chain_flags(priv);
 439
 440         if (smps_request != -1) {
 441                 priv->current_ht_config.smps = smps_request;
 442                 for_each_context(priv, ctx) {
 443                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
 444                                 ieee80211_request_smps(ctx->vif, 0, smps_request);
 445                 }
 446         }
 447
 448         /*
 449          * Dynamic PS poll related functionality. Adjust RSSI measurements if
 450          * necessary.
 451          */
 452         iwlagn_bt_coex_rssi_monitor(priv);
 453 out:
 454         mutex_unlock(&priv->mutex);
 455 }
 456
 457 /*
 458  * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
 459  * correct interface or disable it if this is the last interface to be
 460  * removed.
 461  */
 462 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
 463 {
 464         if (priv->bt_is_sco &&
 465             priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
 466                 iwlagn_bt_adjust_rssi_monitor(priv, true);
 467         else
 468                 iwlagn_bt_adjust_rssi_monitor(priv, false);
 469 }
 470
 471 static void iwlagn_print_uartmsg(struct iwl_priv *priv,
 472                                 struct iwl_bt_uart_msg *uart_msg)
 473 {
 474         IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
 475                         "Update Req = 0x%X\n",
 476                 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
 477                         BT_UART_MSG_FRAME1MSGTYPE_POS,
 478                 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
 479                         BT_UART_MSG_FRAME1SSN_POS,
 480                 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
 481                         BT_UART_MSG_FRAME1UPDATEREQ_POS);
 482
 483         IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
 484                         "Chl_SeqN = 0x%X, In band = 0x%X\n",
 485                 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
 486                         BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
 487                 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
 488                         BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
 489                 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
 490                         BT_UART_MSG_FRAME2CHLSEQN_POS,
 491                 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
 492                         BT_UART_MSG_FRAME2INBAND_POS);
 493
 494         IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
 495                         "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X\n",
 496                 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 497                         BT_UART_MSG_FRAME3SCOESCO_POS,
 498                 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
 499                         BT_UART_MSG_FRAME3SNIFF_POS,
 500                 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
 501                         BT_UART_MSG_FRAME3A2DP_POS,
 502                 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
 503                         BT_UART_MSG_FRAME3ACL_POS,
 504                 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
 505                         BT_UART_MSG_FRAME3MASTER_POS,
 506                 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
 507                         BT_UART_MSG_FRAME3OBEX_POS);
 508
 509         IWL_DEBUG_COEX(priv, "Idle duration = 0x%X\n",
 510                 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
 511                         BT_UART_MSG_FRAME4IDLEDURATION_POS);
 512
 513         IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
 514                         "eSCO Retransmissions = 0x%X\n",
 515                 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
 516                         BT_UART_MSG_FRAME5TXACTIVITY_POS,
 517                 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
 518                         BT_UART_MSG_FRAME5RXACTIVITY_POS,
 519                 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
 520                         BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
 521
 522         IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X\n",
 523                 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
 524                         BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
 525                 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
 526                         BT_UART_MSG_FRAME6DISCOVERABLE_POS);
 527
 528         IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
 529                         "0x%X, Inquiry = 0x%X, Connectable = 0x%X\n",
 530                 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
 531                         BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
 532                 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
 533                         BT_UART_MSG_FRAME7PAGE_POS,
 534                 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
 535                         BT_UART_MSG_FRAME7INQUIRY_POS,
 536                 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
 537                         BT_UART_MSG_FRAME7CONNECTABLE_POS);
 538 }
 539
 540 static bool iwlagn_set_kill_msk(struct iwl_priv *priv,
 541                                 struct iwl_bt_uart_msg *uart_msg)
 542 {
 543         bool need_update = false;
 544         u8 kill_msk = IWL_BT_KILL_REDUCE;
 545         static const __le32 bt_kill_ack_msg[3] = {
 546                 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
 547                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 548                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 549         static const __le32 bt_kill_cts_msg[3] = {
 550                 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
 551                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 552                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 553
 554         if (!priv->reduced_txpower)
 555                 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
 556                         ? IWL_BT_KILL_OVERRIDE : IWL_BT_KILL_DEFAULT;
 557         if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
 558             priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
 559                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
 560                 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
 561                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
 562                 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
 563                 need_update = true;
 564         }
 565         return need_update;
 566 }
 567
 568 /*
 569  * Upon RSSI changes, sends a bt config command with following changes
 570  *  1. enable/disable "reduced control frames tx power
 571  *  2. update the "kill)ack_mask" and "kill_cts_mask"
 572  *
 573  * If "reduced tx power" is enabled, uCode shall
 574  *  1. ACK/Back/CTS rate shall reduced to 6Mbps
 575  *  2. not use duplciate 20/40MHz mode
 576  */
 577 static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv,
 578                                 struct iwl_bt_uart_msg *uart_msg)
 579 {
 580         bool need_update = false;
 581         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 582         int ave_rssi;
 583
 584         if (!ctx->vif || (ctx->vif->type != NL80211_IFTYPE_STATION)) {
 585                 IWL_DEBUG_INFO(priv, "BSS ctx not active or not in sta mode\n");
 586                 return false;
 587         }
 588
 589         ave_rssi = ieee80211_ave_rssi(ctx->vif);
 590         if (!ave_rssi) {
 591                 /* no rssi data, no changes to reduce tx power */
 592                 IWL_DEBUG_COEX(priv, "no rssi data available\n");
 593                 return need_update;
 594         }
 595         if (!priv->reduced_txpower &&
 596             !iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
 597             (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) &&
 598             (uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 599             BT_UART_MSG_FRAME3OBEX_MSK)) &&
 600             !(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 601             BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK))) {
 602                 /* enabling reduced tx power */
 603                 priv->reduced_txpower = true;
 604                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 605                 need_update = true;
 606         } else if (priv->reduced_txpower &&
 607                    (iwl_is_associated(priv, IWL_RXON_CTX_PAN) ||
 608                    (ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) ||
 609                    (uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 610                    BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK)) ||
 611                    !(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 612                    BT_UART_MSG_FRAME3OBEX_MSK)))) {
 613                 /* disable reduced tx power */
 614                 priv->reduced_txpower = false;
 615                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 616                 need_update = true;
 617         }
 618
 619         return need_update;
 620 }
 621
 622 static void iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
 623                                          struct iwl_rx_cmd_buffer *rxb)
 624 {
 625         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 626         struct iwl_bt_coex_profile_notif *coex = (void *)pkt->data;
 627         struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
 628
 629         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 630                 /* bt coex disabled */
 631                 return;
 632         }
 633
 634         IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
 635         IWL_DEBUG_COEX(priv, "    status: %d\n", coex->bt_status);
 636         IWL_DEBUG_COEX(priv, "    traffic load: %d\n", coex->bt_traffic_load);
 637         IWL_DEBUG_COEX(priv, "    CI compliance: %d\n",
 638                         coex->bt_ci_compliance);
 639         iwlagn_print_uartmsg(priv, uart_msg);
 640
 641         priv->last_bt_traffic_load = priv->bt_traffic_load;
 642         priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
 643
 644         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
 645                 if (priv->bt_status != coex->bt_status ||
 646                     priv->last_bt_traffic_load != coex->bt_traffic_load) {
 647                         if (coex->bt_status) {
 648                                 /* BT on */
 649                                 if (!priv->bt_ch_announce)
 650                                         priv->bt_traffic_load =
 651                                                 IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
 652                                 else
 653                                         priv->bt_traffic_load =
 654                                                 coex->bt_traffic_load;
 655                         } else {
 656                                 /* BT off */
 657                                 priv->bt_traffic_load =
 658                                         IWL_BT_COEX_TRAFFIC_LOAD_NONE;
 659                         }
 660                         priv->bt_status = coex->bt_status;
 661                         queue_work(priv->workqueue,
 662                                    &priv->bt_traffic_change_work);
 663                 }
 664         }
 665
 666         /* schedule to send runtime bt_config */
 667         /* check reduce power before change ack/cts kill mask */
 668         if (iwlagn_fill_txpower_mode(priv, uart_msg) ||
 669             iwlagn_set_kill_msk(priv, uart_msg))
 670                 queue_work(priv->workqueue, &priv->bt_runtime_config);
 671
 672
 673         /* FIXME: based on notification, adjust the prio_boost */
 674
 675         priv->bt_ci_compliance = coex->bt_ci_compliance;
 676 }
 677
 678 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
 679 {
 680         priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
 681                 iwlagn_bt_coex_profile_notif;
 682 }
 683
 684 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
 685 {
 686         INIT_WORK(&priv->bt_traffic_change_work,
 687                   iwlagn_bt_traffic_change_work);
 688 }
 689
 690 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
 691 {
 692         cancel_work_sync(&priv->bt_traffic_change_work);
 693 }
 694
 695 static bool is_single_rx_stream(struct iwl_priv *priv)
 696 {
 697         return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
 698                priv->current_ht_config.single_chain_sufficient;
 699 }
 700
 701 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 702 #define IWL_NUM_RX_CHAINS_SINGLE        2
 703 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 704 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 705
 706 /*
 707  * Determine how many receiver/antenna chains to use.
 708  *
 709  * More provides better reception via diversity.  Fewer saves power
 710  * at the expense of throughput, but only when not in powersave to
 711  * start with.
 712  *
 713  * MIMO (dual stream) requires at least 2, but works better with 3.
 714  * This does not determine *which* chains to use, just how many.
 715  */
 716 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 717 {
 718         if (priv->lib->bt_params &&
 719             priv->lib->bt_params->advanced_bt_coexist &&
 720             (priv->bt_full_concurrent ||
 721              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 722                 /*
 723                  * only use chain 'A' in bt high traffic load or
 724                  * full concurrency mode
 725                  */
 726                 return IWL_NUM_RX_CHAINS_SINGLE;
 727         }
 728         /* # of Rx chains to use when expecting MIMO. */
 729         if (is_single_rx_stream(priv))
 730                 return IWL_NUM_RX_CHAINS_SINGLE;
 731         else
 732                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 733 }
 734
 735 /*
 736  * When we are in power saving mode, unless device support spatial
 737  * multiplexing power save, use the active count for rx chain count.
 738  */
 739 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 740 {
 741         /* # Rx chains when idling, depending on SMPS mode */
 742         switch (priv->current_ht_config.smps) {
 743         case IEEE80211_SMPS_STATIC:
 744         case IEEE80211_SMPS_DYNAMIC:
 745                 return IWL_NUM_IDLE_CHAINS_SINGLE;
 746         case IEEE80211_SMPS_AUTOMATIC:
 747         case IEEE80211_SMPS_OFF:
 748                 return active_cnt;
 749         default:
 750                 WARN(1, "invalid SMPS mode %d",
 751                      priv->current_ht_config.smps);
 752                 return active_cnt;
 753         }
 754 }
 755
 756 /* up to 4 chains */
 757 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
 758 {
 759         u8 res;
 760         res = (chain_bitmap & BIT(0)) >> 0;
 761         res += (chain_bitmap & BIT(1)) >> 1;
 762         res += (chain_bitmap & BIT(2)) >> 2;
 763         res += (chain_bitmap & BIT(3)) >> 3;
 764         return res;
 765 }
 766
 767 /*
 768  * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
 769  *
 770  * Selects how many and which Rx receivers/antennas/chains to use.
 771  * This should not be used for scan command ... it puts data in wrong place.
 772  */
 773 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 774 {
 775         bool is_single = is_single_rx_stream(priv);
 776         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 777         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
 778         u32 active_chains;
 779         u16 rx_chain;
 780
 781         /* Tell uCode which antennas are actually connected.
 782          * Before first association, we assume all antennas are connected.
 783          * Just after first association, iwl_chain_noise_calibration()
 784          *    checks which antennas actually *are* connected. */
 785         if (priv->chain_noise_data.active_chains)
 786                 active_chains = priv->chain_noise_data.active_chains;
 787         else
 788                 active_chains = priv->nvm_data->valid_rx_ant;
 789
 790         if (priv->lib->bt_params &&
 791             priv->lib->bt_params->advanced_bt_coexist &&
 792             (priv->bt_full_concurrent ||
 793              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 794                 /*
 795                  * only use chain 'A' in bt high traffic load or
 796                  * full concurrency mode
 797                  */
 798                 active_chains = first_antenna(active_chains);
 799         }
 800
 801         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
 802
 803         /* How many receivers should we use? */
 804         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
 805         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
 806
 807
 808         /* correct rx chain count according hw settings
 809          * and chain noise calibration
 810          */
 811         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
 812         if (valid_rx_cnt < active_rx_cnt)
 813                 active_rx_cnt = valid_rx_cnt;
 814
 815         if (valid_rx_cnt < idle_rx_cnt)
 816                 idle_rx_cnt = valid_rx_cnt;
 817
 818         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
 819         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
 820
 821         ctx->staging.rx_chain = cpu_to_le16(rx_chain);
 822
 823         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
 824                 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
 825         else
 826                 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
 827
 828         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
 829                         ctx->staging.rx_chain,
 830                         active_rx_cnt, idle_rx_cnt);
 831
 832         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
 833                 active_rx_cnt < idle_rx_cnt);
 834 }
 835
 836 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
 837 {
 838         int i;
 839         u8 ind = ant;
 840
 841         if (priv->band == NL80211_BAND_2GHZ &&
 842             priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
 843                 return 0;
 844
 845         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 846                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 847                 if (valid & BIT(ind))
 848                         return ind;
 849         }
 850         return ant;
 851 }
 852
 853 #ifdef CONFIG_PM_SLEEP
 854 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
 855 {
 856         int i;
 857
 858         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
 859                 out[i] = cpu_to_le16(p1k[i]);
 860 }
 861
 862 struct wowlan_key_data {
 863         struct iwl_rxon_context *ctx;
 864         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
 865         struct iwlagn_wowlan_tkip_params_cmd *tkip;
 866         const u8 *bssid;
 867         bool error, use_rsc_tsc, use_tkip;
 868 };
 869
 870
 871 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
 872                                struct ieee80211_vif *vif,
 873                                struct ieee80211_sta *sta,
 874                                struct ieee80211_key_conf *key,
 875                                void *_data)
 876 {
 877         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 878         struct wowlan_key_data *data = _data;
 879         struct iwl_rxon_context *ctx = data->ctx;
 880         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
 881         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 882         struct iwlagn_p1k_cache *rx_p1ks;
 883         u8 *rx_mic_key;
 884         struct ieee80211_key_seq seq;
 885         u32 cur_rx_iv32 = 0;
 886         u16 p1k[IWLAGN_P1K_SIZE];
 887         int ret, i;
 888
 889         mutex_lock(&priv->mutex);
 890
 891         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 892              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 893              !sta && !ctx->key_mapping_keys)
 894                 ret = iwl_set_default_wep_key(priv, ctx, key);
 895         else
 896                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
 897
 898         if (ret) {
 899                 IWL_ERR(priv, "Error setting key during suspend!\n");
 900                 data->error = true;
 901         }
 902
 903         switch (key->cipher) {
 904         case WLAN_CIPHER_SUITE_TKIP:
 905                 if (sta) {
 906                         u64 pn64;
 907
 908                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
 909                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
 910
 911                         rx_p1ks = data->tkip->rx_uni;
 912
 913                         pn64 = atomic64_read(&key->tx_pn);
 914                         tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
 915                         tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
 916
 917                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
 918                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
 919
 920                         memcpy(data->tkip->mic_keys.tx,
 921                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
 922                                IWLAGN_MIC_KEY_SIZE);
 923
 924                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
 925                 } else {
 926                         tkip_sc =
 927                                 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
 928                         rx_p1ks = data->tkip->rx_multi;
 929                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
 930                 }
 931
 932                 /*
 933                  * For non-QoS this relies on the fact that both the uCode and
 934                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 935                  * for checking the IV in the frames.
 936                  */
 937                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
 938                         ieee80211_get_key_rx_seq(key, i, &seq);
 939                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
 940                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
 941                         /* wrapping isn't allowed, AP must rekey */
 942                         if (seq.tkip.iv32 > cur_rx_iv32)
 943                                 cur_rx_iv32 = seq.tkip.iv32;
 944                 }
 945
 946                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
 947                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
 948                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
 949                                           cur_rx_iv32 + 1, p1k);
 950                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
 951
 952                 memcpy(rx_mic_key,
 953                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
 954                        IWLAGN_MIC_KEY_SIZE);
 955
 956                 data->use_tkip = true;
 957                 data->use_rsc_tsc = true;
 958                 break;
 959         case WLAN_CIPHER_SUITE_CCMP:
 960                 if (sta) {
 961                         u64 pn64;
 962
 963                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
 964                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
 965
 966                         pn64 = atomic64_read(&key->tx_pn);
 967                         aes_tx_sc->pn = cpu_to_le64(pn64);
 968                 } else
 969                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
 970
 971                 /*
 972                  * For non-QoS this relies on the fact that both the uCode and
 973                  * mac80211 use TID 0 for checking the IV in the frames.
 974                  */
 975                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
 976                         u8 *pn = seq.ccmp.pn;
 977
 978                         ieee80211_get_key_rx_seq(key, i, &seq);
 979                         aes_sc[i].pn = cpu_to_le64(
 980                                         (u64)pn[5] |
 981                                         ((u64)pn[4] << 8) |
 982                                         ((u64)pn[3] << 16) |
 983                                         ((u64)pn[2] << 24) |
 984                                         ((u64)pn[1] << 32) |
 985                                         ((u64)pn[0] << 40));
 986                 }
 987                 data->use_rsc_tsc = true;
 988                 break;
 989         }
 990
 991         mutex_unlock(&priv->mutex);
 992 }
 993
 994 int iwlagn_send_patterns(struct iwl_priv *priv,
 995                         struct cfg80211_wowlan *wowlan)
 996 {
 997         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
 998         struct iwl_host_cmd cmd = {
 999                 .id = REPLY_WOWLAN_PATTERNS,
1000                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1001         };
1002         int i, err;
1003
1004         if (!wowlan->n_patterns)
1005                 return 0;
1006
1007         cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
1008
1009         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1010         if (!pattern_cmd)
1011                 return -ENOMEM;
1012
1013         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1014
1015         for (i = 0; i < wowlan->n_patterns; i++) {
1016                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1017
1018                 memcpy(&pattern_cmd->patterns[i].mask,
1019                         wowlan->patterns[i].mask, mask_len);
1020                 memcpy(&pattern_cmd->patterns[i].pattern,
1021                         wowlan->patterns[i].pattern,
1022                         wowlan->patterns[i].pattern_len);
1023                 pattern_cmd->patterns[i].mask_size = mask_len;
1024                 pattern_cmd->patterns[i].pattern_size =
1025                         wowlan->patterns[i].pattern_len;
1026         }
1027
1028         cmd.data[0] = pattern_cmd;
1029         err = iwl_dvm_send_cmd(priv, &cmd);
1030         kfree(pattern_cmd);
1031         return err;
1032 }
1033
1034 int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan)
1035 {
1036         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
1037         struct iwl_rxon_cmd rxon;
1038         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1039         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
1040         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
1041         struct iwlagn_d3_config_cmd d3_cfg_cmd = {
1042                 /*
1043                  * Program the minimum sleep time to 10 seconds, as many
1044                  * platforms have issues processing a wakeup signal while
1045                  * still being in the process of suspending.
1046                  */
1047                 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1048         };
1049         struct wowlan_key_data key_data = {
1050                 .ctx = ctx,
1051                 .bssid = ctx->active.bssid_addr,
1052                 .use_rsc_tsc = false,
1053                 .tkip = &tkip_cmd,
1054                 .use_tkip = false,
1055         };
1056         int ret, i;
1057         u16 seq;
1058
1059         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1060         if (!key_data.rsc_tsc)
1061                 return -ENOMEM;
1062
1063         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1064
1065         /*
1066          * We know the last used seqno, and the uCode expects to know that
1067          * one, it will increment before TX.
1068          */
1069         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1070         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1071
1072         /*
1073          * For QoS counters, we store the one to use next, so subtract 0x10
1074          * since the uCode will add 0x10 before using the value.
1075          */
1076         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1077                 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1078                 seq -= 0x10;
1079                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1080         }
1081
1082         if (wowlan->disconnect)
1083                 wakeup_filter_cmd.enabled |=
1084                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1085                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1086         if (wowlan->magic_pkt)
1087                 wakeup_filter_cmd.enabled |=
1088                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1089         if (wowlan->gtk_rekey_failure)
1090                 wakeup_filter_cmd.enabled |=
1091                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1092         if (wowlan->eap_identity_req)
1093                 wakeup_filter_cmd.enabled |=
1094                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1095         if (wowlan->four_way_handshake)
1096                 wakeup_filter_cmd.enabled |=
1097                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1098         if (wowlan->n_patterns)
1099                 wakeup_filter_cmd.enabled |=
1100                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1101
1102         if (wowlan->rfkill_release)
1103                 d3_cfg_cmd.wakeup_flags |=
1104                         cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1105
1106         iwl_scan_cancel_timeout(priv, 200);
1107
1108         memcpy(&rxon, &ctx->active, sizeof(rxon));
1109
1110         priv->ucode_loaded = false;
1111         iwl_trans_stop_device(priv->trans);
1112         ret = iwl_trans_start_hw(priv->trans);
1113         if (ret)
1114                 goto out;
1115
1116         priv->wowlan = true;
1117
1118         ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
1119         if (ret)
1120                 goto out;
1121
1122         /* now configure WoWLAN ucode */
1123         ret = iwl_alive_start(priv);
1124         if (ret)
1125                 goto out;
1126
1127         memcpy(&ctx->staging, &rxon, sizeof(rxon));
1128         ret = iwlagn_commit_rxon(priv, ctx);
1129         if (ret)
1130                 goto out;
1131
1132         ret = iwl_power_update_mode(priv, true);
1133         if (ret)
1134                 goto out;
1135
1136         if (!iwlwifi_mod_params.swcrypto) {
1137                 /* mark all keys clear */
1138                 priv->ucode_key_table = 0;
1139                 ctx->key_mapping_keys = 0;
1140
1141                 /*
1142                  * This needs to be unlocked due to lock ordering
1143                  * constraints. Since we're in the suspend path
1144                  * that isn't really a problem though.
1145                  */
1146                 mutex_unlock(&priv->mutex);
1147                 ieee80211_iter_keys(priv->hw, ctx->vif,
1148                                     iwlagn_wowlan_program_keys,
1149                                     &key_data);
1150                 mutex_lock(&priv->mutex);
1151                 if (key_data.error) {
1152                         ret = -EIO;
1153                         goto out;
1154                 }
1155
1156                 if (key_data.use_rsc_tsc) {
1157                         struct iwl_host_cmd rsc_tsc_cmd = {
1158                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1159                                 .data[0] = key_data.rsc_tsc,
1160                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1161                                 .len[0] = sizeof(*key_data.rsc_tsc),
1162                         };
1163
1164                         ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd);
1165                         if (ret)
1166                                 goto out;
1167                 }
1168
1169                 if (key_data.use_tkip) {
1170                         ret = iwl_dvm_send_cmd_pdu(priv,
1171                                                  REPLY_WOWLAN_TKIP_PARAMS,
1172                                                  0, sizeof(tkip_cmd),
1173                                                  &tkip_cmd);
1174                         if (ret)
1175                                 goto out;
1176                 }
1177
1178                 if (priv->have_rekey_data) {
1179                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1180                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1181                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1182                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1183                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1184                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
1185
1186                         ret = iwl_dvm_send_cmd_pdu(priv,
1187                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
1188                                                  0, sizeof(kek_kck_cmd),
1189                                                  &kek_kck_cmd);
1190                         if (ret)
1191                                 goto out;
1192                 }
1193         }
1194
1195         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, 0,
1196                                      sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1197         if (ret)
1198                 goto out;
1199
1200         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER,
1201                                  0, sizeof(wakeup_filter_cmd),
1202                                  &wakeup_filter_cmd);
1203         if (ret)
1204                 goto out;
1205
1206         ret = iwlagn_send_patterns(priv, wowlan);
1207  out:
1208         kfree(key_data.rsc_tsc);
1209         return ret;
1210 }
1211 #endif
1212
1213 int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
1214 {
1215         if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
1216                 IWL_WARN(priv, "Not sending command - %s KILL\n",
1217                          iwl_is_rfkill(priv) ? "RF" : "CT");
1218                 return -EIO;
1219         }
1220
1221         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
1222                 IWL_ERR(priv, "Command %s failed: FW Error\n",
1223                         iwl_get_cmd_string(priv->trans, cmd->id));
1224                 return -EIO;
1225         }
1226
1227         /*
1228          * This can happen upon FW ASSERT: we clear the STATUS_FW_ERROR flag
1229          * in iwl_down but cancel the workers only later.
1230          */
1231         if (!priv->ucode_loaded) {
1232                 IWL_ERR(priv, "Fw not loaded - dropping CMD: %x\n", cmd->id);
1233                 return -EIO;
1234         }
1235
1236         /*
1237          * Synchronous commands from this op-mode must hold
1238          * the mutex, this ensures we don't try to send two
1239          * (or more) synchronous commands at a time.
1240          */
1241         if (!(cmd->flags & CMD_ASYNC))
1242                 lockdep_assert_held(&priv->mutex);
1243
1244         return iwl_trans_send_cmd(priv->trans, cmd);
1245 }
1246
1247 int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id,
1248                          u32 flags, u16 len, const void *data)
1249 {
1250         struct iwl_host_cmd cmd = {
1251                 .id = id,
1252                 .len = { len, },
1253                 .data = { data, },
1254                 .flags = flags,
1255         };
1256
1257         return iwl_dvm_send_cmd(priv, &cmd);
1258 }