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

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of version 2 of the GNU General Public License as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  19  * USA
  20  *
  21  * The full GNU General Public License is included in this distribution
  22  * in the file called COPYING.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <linuxwifi@intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29 #include <linux/etherdevice.h>
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/sched.h>
  33 #include <net/mac80211.h>
  34
  35 #include "iwl-io.h"
  36 #include "iwl-agn-hw.h"
  37 #include "iwl-trans.h"
  38 #include "iwl-modparams.h"
  39
  40 #include "dev.h"
  41 #include "agn.h"
  42
  43 int iwlagn_hw_valid_rtc_data_addr(u32 addr)
  44 {
  45         return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) &&
  46                 (addr < IWLAGN_RTC_DATA_UPPER_BOUND);
  47 }
  48
  49 int iwlagn_send_tx_power(struct iwl_priv *priv)
  50 {
  51         struct iwlagn_tx_power_dbm_cmd tx_power_cmd;
  52         u8 tx_ant_cfg_cmd;
  53
  54         if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
  55                       "TX Power requested while scanning!\n"))
  56                 return -EAGAIN;
  57
  58         /* half dBm need to multiply */
  59         tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
  60
  61         if (tx_power_cmd.global_lmt > priv->nvm_data->max_tx_pwr_half_dbm) {
  62                 /*
  63                  * For the newer devices which using enhanced/extend tx power
  64                  * table in EEPROM, the format is in half dBm. driver need to
  65                  * convert to dBm format before report to mac80211.
  66                  * By doing so, there is a possibility of 1/2 dBm resolution
  67                  * lost. driver will perform "round-up" operation before
  68                  * reporting, but it will cause 1/2 dBm tx power over the
  69                  * regulatory limit. Perform the checking here, if the
  70                  * "tx_power_user_lmt" is higher than EEPROM value (in
  71                  * half-dBm format), lower the tx power based on EEPROM
  72                  */
  73                 tx_power_cmd.global_lmt =
  74                         priv->nvm_data->max_tx_pwr_half_dbm;
  75         }
  76         tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED;
  77         tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO;
  78
  79         if (IWL_UCODE_API(priv->fw->ucode_ver) == 1)
  80                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1;
  81         else
  82                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
  83
  84         return iwl_dvm_send_cmd_pdu(priv, tx_ant_cfg_cmd, 0,
  85                         sizeof(tx_power_cmd), &tx_power_cmd);
  86 }
  87
  88 void iwlagn_temperature(struct iwl_priv *priv)
  89 {
  90         lockdep_assert_held(&priv->statistics.lock);
  91
  92         /* store temperature from correct statistics (in Celsius) */
  93         priv->temperature = le32_to_cpu(priv->statistics.common.temperature);
  94         iwl_tt_handler(priv);
  95 }
  96
  97 int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum nl80211_band band)
  98 {
  99         int idx = 0;
 100         int band_offset = 0;
 101
 102         /* HT rate format: mac80211 wants an MCS number, which is just LSB */
 103         if (rate_n_flags & RATE_MCS_HT_MSK) {
 104                 idx = (rate_n_flags & 0xff);
 105                 return idx;
 106         /* Legacy rate format, search for match in table */
 107         } else {
 108                 if (band == NL80211_BAND_5GHZ)
 109                         band_offset = IWL_FIRST_OFDM_RATE;
 110                 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
 111                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 112                                 return idx - band_offset;
 113         }
 114
 115         return -1;
 116 }
 117
 118 int iwlagn_manage_ibss_station(struct iwl_priv *priv,
 119                                struct ieee80211_vif *vif, bool add)
 120 {
 121         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
 122
 123         if (add)
 124                 return iwlagn_add_bssid_station(priv, vif_priv->ctx,
 125                                                 vif->bss_conf.bssid,
 126                                                 &vif_priv->ibss_bssid_sta_id);
 127         return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
 128                                   vif->bss_conf.bssid);
 129 }
 130
 131 /**
 132  * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode
 133  *
 134  * pre-requirements:
 135  *  1. acquire mutex before calling
 136  *  2. make sure rf is on and not in exit state
 137  */
 138 int iwlagn_txfifo_flush(struct iwl_priv *priv, u32 scd_q_msk)
 139 {
 140         struct iwl_txfifo_flush_cmd_v3 flush_cmd_v3 = {
 141                 .flush_control = cpu_to_le16(IWL_DROP_ALL),
 142         };
 143         struct iwl_txfifo_flush_cmd_v2 flush_cmd_v2 = {
 144                 .flush_control = cpu_to_le16(IWL_DROP_ALL),
 145         };
 146
 147         u32 queue_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
 148                             IWL_SCD_BE_MSK | IWL_SCD_BK_MSK | IWL_SCD_MGMT_MSK;
 149
 150         if ((priv->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
 151                 queue_control |= IWL_PAN_SCD_VO_MSK | IWL_PAN_SCD_VI_MSK |
 152                                  IWL_PAN_SCD_BE_MSK | IWL_PAN_SCD_BK_MSK |
 153                                  IWL_PAN_SCD_MGMT_MSK |
 154                                  IWL_PAN_SCD_MULTICAST_MSK;
 155
 156         if (priv->nvm_data->sku_cap_11n_enable)
 157                 queue_control |= IWL_AGG_TX_QUEUE_MSK;
 158
 159         if (scd_q_msk)
 160                 queue_control = scd_q_msk;
 161
 162         IWL_DEBUG_INFO(priv, "queue control: 0x%x\n", queue_control);
 163         flush_cmd_v3.queue_control = cpu_to_le32(queue_control);
 164         flush_cmd_v2.queue_control = cpu_to_le16((u16)queue_control);
 165
 166         if (IWL_UCODE_API(priv->fw->ucode_ver) > 2)
 167                 return iwl_dvm_send_cmd_pdu(priv, REPLY_TXFIFO_FLUSH, 0,
 168                                             sizeof(flush_cmd_v3),
 169                                             &flush_cmd_v3);
 170         return iwl_dvm_send_cmd_pdu(priv, REPLY_TXFIFO_FLUSH, 0,
 171                                     sizeof(flush_cmd_v2), &flush_cmd_v2);
 172 }
 173
 174 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv)
 175 {
 176         mutex_lock(&priv->mutex);
 177         ieee80211_stop_queues(priv->hw);
 178         if (iwlagn_txfifo_flush(priv, 0)) {
 179                 IWL_ERR(priv, "flush request fail\n");
 180                 goto done;
 181         }
 182         IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
 183         iwl_trans_wait_tx_queue_empty(priv->trans, 0xffffffff);
 184 done:
 185         ieee80211_wake_queues(priv->hw);
 186         mutex_unlock(&priv->mutex);
 187 }
 188
 189 /*
 190  * BT coex
 191  */
 192 /* Notmal TDM */
 193 static const __le32 iwlagn_def_3w_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 194         cpu_to_le32(0xaaaaaaaa),
 195         cpu_to_le32(0xaaaaaaaa),
 196         cpu_to_le32(0xaeaaaaaa),
 197         cpu_to_le32(0xaaaaaaaa),
 198         cpu_to_le32(0xcc00ff28),
 199         cpu_to_le32(0x0000aaaa),
 200         cpu_to_le32(0xcc00aaaa),
 201         cpu_to_le32(0x0000aaaa),
 202         cpu_to_le32(0xc0004000),
 203         cpu_to_le32(0x00004000),
 204         cpu_to_le32(0xf0005000),
 205         cpu_to_le32(0xf0005000),
 206 };
 207
 208 /* Full concurrency */
 209 static const __le32 iwlagn_concurrent_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 210         cpu_to_le32(0xaaaaaaaa),
 211         cpu_to_le32(0xaaaaaaaa),
 212         cpu_to_le32(0xaaaaaaaa),
 213         cpu_to_le32(0xaaaaaaaa),
 214         cpu_to_le32(0xaaaaaaaa),
 215         cpu_to_le32(0xaaaaaaaa),
 216         cpu_to_le32(0xaaaaaaaa),
 217         cpu_to_le32(0xaaaaaaaa),
 218         cpu_to_le32(0x00000000),
 219         cpu_to_le32(0x00000000),
 220         cpu_to_le32(0x00000000),
 221         cpu_to_le32(0x00000000),
 222 };
 223
 224 void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
 225 {
 226         struct iwl_basic_bt_cmd basic = {
 227                 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
 228                 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
 229                 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
 230                 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
 231         };
 232         struct iwl_bt_cmd_v1 bt_cmd_v1;
 233         struct iwl_bt_cmd_v2 bt_cmd_v2;
 234         int ret;
 235
 236         BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
 237                         sizeof(basic.bt3_lookup_table));
 238
 239         if (priv->lib->bt_params) {
 240                 /*
 241                  * newer generation of devices (2000 series and newer)
 242                  * use the version 2 of the bt command
 243                  * we need to make sure sending the host command
 244                  * with correct data structure to avoid uCode assert
 245                  */
 246                 if (priv->lib->bt_params->bt_session_2) {
 247                         bt_cmd_v2.prio_boost = cpu_to_le32(
 248                                 priv->lib->bt_params->bt_prio_boost);
 249                         bt_cmd_v2.tx_prio_boost = 0;
 250                         bt_cmd_v2.rx_prio_boost = 0;
 251                 } else {
 252                         /* older version only has 8 bits */
 253                         WARN_ON(priv->lib->bt_params->bt_prio_boost & ~0xFF);
 254                         bt_cmd_v1.prio_boost =
 255                                 priv->lib->bt_params->bt_prio_boost;
 256                         bt_cmd_v1.tx_prio_boost = 0;
 257                         bt_cmd_v1.rx_prio_boost = 0;
 258                 }
 259         } else {
 260                 IWL_ERR(priv, "failed to construct BT Coex Config\n");
 261                 return;
 262         }
 263
 264         /*
 265          * Possible situations when BT needs to take over for receive,
 266          * at the same time where STA needs to response to AP's frame(s),
 267          * reduce the tx power of the required response frames, by that,
 268          * allow the concurrent BT receive & WiFi transmit
 269          * (BT - ANT A, WiFi -ANT B), without interference to one another
 270          *
 271          * Reduced tx power apply to control frames only (ACK/Back/CTS)
 272          * when indicated by the BT config command
 273          */
 274         basic.kill_ack_mask = priv->kill_ack_mask;
 275         basic.kill_cts_mask = priv->kill_cts_mask;
 276         if (priv->reduced_txpower)
 277                 basic.reduce_txpower = IWLAGN_BT_REDUCED_TX_PWR;
 278         basic.valid = priv->bt_valid;
 279
 280         /*
 281          * Configure BT coex mode to "no coexistence" when the
 282          * user disabled BT coexistence, we have no interface
 283          * (might be in monitor mode), or the interface is in
 284          * IBSS mode (no proper uCode support for coex then).
 285          */
 286         if (!iwlwifi_mod_params.bt_coex_active ||
 287             priv->iw_mode == NL80211_IFTYPE_ADHOC) {
 288                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
 289         } else {
 290                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
 291                                         IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
 292
 293                 if (!priv->bt_enable_pspoll)
 294                         basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 295                 else
 296                         basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 297
 298                 if (priv->bt_ch_announce)
 299                         basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
 300                 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
 301         }
 302         priv->bt_enable_flag = basic.flags;
 303         if (priv->bt_full_concurrent)
 304                 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
 305                         sizeof(iwlagn_concurrent_lookup));
 306         else
 307                 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
 308                         sizeof(iwlagn_def_3w_lookup));
 309
 310         IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
 311                        basic.flags ? "active" : "disabled",
 312                        priv->bt_full_concurrent ?
 313                        "full concurrency" : "3-wire");
 314
 315         if (priv->lib->bt_params->bt_session_2) {
 316                 memcpy(&bt_cmd_v2.basic, &basic,
 317                         sizeof(basic));
 318                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 319                         0, sizeof(bt_cmd_v2), &bt_cmd_v2);
 320         } else {
 321                 memcpy(&bt_cmd_v1.basic, &basic,
 322                         sizeof(basic));
 323                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 324                         0, sizeof(bt_cmd_v1), &bt_cmd_v1);
 325         }
 326         if (ret)
 327                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 328
 329 }
 330
 331 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
 332 {
 333         struct iwl_rxon_context *ctx, *found_ctx = NULL;
 334         bool found_ap = false;
 335
 336         lockdep_assert_held(&priv->mutex);
 337
 338         /* Check whether AP or GO mode is active. */
 339         if (rssi_ena) {
 340                 for_each_context(priv, ctx) {
 341                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
 342                             iwl_is_associated_ctx(ctx)) {
 343                                 found_ap = true;
 344                                 break;
 345                         }
 346                 }
 347         }
 348
 349         /*
 350          * If disable was received or If GO/AP mode, disable RSSI
 351          * measurements.
 352          */
 353         if (!rssi_ena || found_ap) {
 354                 if (priv->cur_rssi_ctx) {
 355                         ctx = priv->cur_rssi_ctx;
 356                         ieee80211_disable_rssi_reports(ctx->vif);
 357                         priv->cur_rssi_ctx = NULL;
 358                 }
 359                 return;
 360         }
 361
 362         /*
 363          * If rssi measurements need to be enabled, consider all cases now.
 364          * Figure out how many contexts are active.
 365          */
 366         for_each_context(priv, ctx) {
 367                 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
 368                     iwl_is_associated_ctx(ctx)) {
 369                         found_ctx = ctx;
 370                         break;
 371                 }
 372         }
 373
 374         /*
 375          * rssi monitor already enabled for the correct interface...nothing
 376          * to do.
 377          */
 378         if (found_ctx == priv->cur_rssi_ctx)
 379                 return;
 380
 381         /*
 382          * Figure out if rssi monitor is currently enabled, and needs
 383          * to be changed. If rssi monitor is already enabled, disable
 384          * it first else just enable rssi measurements on the
 385          * interface found above.
 386          */
 387         if (priv->cur_rssi_ctx) {
 388                 ctx = priv->cur_rssi_ctx;
 389                 if (ctx->vif)
 390                         ieee80211_disable_rssi_reports(ctx->vif);
 391         }
 392
 393         priv->cur_rssi_ctx = found_ctx;
 394
 395         if (!found_ctx)
 396                 return;
 397
 398         ieee80211_enable_rssi_reports(found_ctx->vif,
 399                         IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
 400                         IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
 401 }
 402
 403 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
 404 {
 405         return (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 406                 BT_UART_MSG_FRAME3SCOESCO_POS;
 407 }
 408
 409 static void iwlagn_bt_traffic_change_work(struct work_struct *work)
 410 {
 411         struct iwl_priv *priv =
 412                 container_of(work, struct iwl_priv, bt_traffic_change_work);
 413         struct iwl_rxon_context *ctx;
 414         int smps_request = -1;
 415
 416         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 417                 /* bt coex disabled */
 418                 return;
 419         }
 420
 421         /*
 422          * Note: bt_traffic_load can be overridden by scan complete and
 423          * coex profile notifications. Ignore that since only bad consequence
 424          * can be not matching debug print with actual state.
 425          */
 426         IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
 427                        priv->bt_traffic_load);
 428
 429         switch (priv->bt_traffic_load) {
 430         case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
 431                 if (priv->bt_status)
 432                         smps_request = IEEE80211_SMPS_DYNAMIC;
 433                 else
 434                         smps_request = IEEE80211_SMPS_AUTOMATIC;
 435                 break;
 436         case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
 437                 smps_request = IEEE80211_SMPS_DYNAMIC;
 438                 break;
 439         case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
 440         case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
 441                 smps_request = IEEE80211_SMPS_STATIC;
 442                 break;
 443         default:
 444                 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
 445                         priv->bt_traffic_load);
 446                 break;
 447         }
 448
 449         mutex_lock(&priv->mutex);
 450
 451         /*
 452          * We can not send command to firmware while scanning. When the scan
 453          * complete we will schedule this work again. We do check with mutex
 454          * locked to prevent new scan request to arrive. We do not check
 455          * STATUS_SCANNING to avoid race when queue_work two times from
 456          * different notifications, but quit and not perform any work at all.
 457          */
 458         if (test_bit(STATUS_SCAN_HW, &priv->status))
 459                 goto out;
 460
 461         iwl_update_chain_flags(priv);
 462
 463         if (smps_request != -1) {
 464                 priv->current_ht_config.smps = smps_request;
 465                 for_each_context(priv, ctx) {
 466                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
 467                                 ieee80211_request_smps(ctx->vif, smps_request);
 468                 }
 469         }
 470
 471         /*
 472          * Dynamic PS poll related functionality. Adjust RSSI measurements if
 473          * necessary.
 474          */
 475         iwlagn_bt_coex_rssi_monitor(priv);
 476 out:
 477         mutex_unlock(&priv->mutex);
 478 }
 479
 480 /*
 481  * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
 482  * correct interface or disable it if this is the last interface to be
 483  * removed.
 484  */
 485 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
 486 {
 487         if (priv->bt_is_sco &&
 488             priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
 489                 iwlagn_bt_adjust_rssi_monitor(priv, true);
 490         else
 491                 iwlagn_bt_adjust_rssi_monitor(priv, false);
 492 }
 493
 494 static void iwlagn_print_uartmsg(struct iwl_priv *priv,
 495                                 struct iwl_bt_uart_msg *uart_msg)
 496 {
 497         IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
 498                         "Update Req = 0x%X\n",
 499                 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
 500                         BT_UART_MSG_FRAME1MSGTYPE_POS,
 501                 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
 502                         BT_UART_MSG_FRAME1SSN_POS,
 503                 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
 504                         BT_UART_MSG_FRAME1UPDATEREQ_POS);
 505
 506         IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
 507                         "Chl_SeqN = 0x%X, In band = 0x%X\n",
 508                 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
 509                         BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
 510                 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
 511                         BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
 512                 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
 513                         BT_UART_MSG_FRAME2CHLSEQN_POS,
 514                 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
 515                         BT_UART_MSG_FRAME2INBAND_POS);
 516
 517         IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
 518                         "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X\n",
 519                 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 520                         BT_UART_MSG_FRAME3SCOESCO_POS,
 521                 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
 522                         BT_UART_MSG_FRAME3SNIFF_POS,
 523                 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
 524                         BT_UART_MSG_FRAME3A2DP_POS,
 525                 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
 526                         BT_UART_MSG_FRAME3ACL_POS,
 527                 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
 528                         BT_UART_MSG_FRAME3MASTER_POS,
 529                 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
 530                         BT_UART_MSG_FRAME3OBEX_POS);
 531
 532         IWL_DEBUG_COEX(priv, "Idle duration = 0x%X\n",
 533                 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
 534                         BT_UART_MSG_FRAME4IDLEDURATION_POS);
 535
 536         IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
 537                         "eSCO Retransmissions = 0x%X\n",
 538                 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
 539                         BT_UART_MSG_FRAME5TXACTIVITY_POS,
 540                 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
 541                         BT_UART_MSG_FRAME5RXACTIVITY_POS,
 542                 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
 543                         BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
 544
 545         IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X\n",
 546                 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
 547                         BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
 548                 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
 549                         BT_UART_MSG_FRAME6DISCOVERABLE_POS);
 550
 551         IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
 552                         "0x%X, Inquiry = 0x%X, Connectable = 0x%X\n",
 553                 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
 554                         BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
 555                 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
 556                         BT_UART_MSG_FRAME7PAGE_POS,
 557                 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
 558                         BT_UART_MSG_FRAME7INQUIRY_POS,
 559                 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
 560                         BT_UART_MSG_FRAME7CONNECTABLE_POS);
 561 }
 562
 563 static bool iwlagn_set_kill_msk(struct iwl_priv *priv,
 564                                 struct iwl_bt_uart_msg *uart_msg)
 565 {
 566         bool need_update = false;
 567         u8 kill_msk = IWL_BT_KILL_REDUCE;
 568         static const __le32 bt_kill_ack_msg[3] = {
 569                 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
 570                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 571                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 572         static const __le32 bt_kill_cts_msg[3] = {
 573                 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
 574                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 575                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 576
 577         if (!priv->reduced_txpower)
 578                 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
 579                         ? IWL_BT_KILL_OVERRIDE : IWL_BT_KILL_DEFAULT;
 580         if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
 581             priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
 582                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
 583                 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
 584                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
 585                 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
 586                 need_update = true;
 587         }
 588         return need_update;
 589 }
 590
 591 /*
 592  * Upon RSSI changes, sends a bt config command with following changes
 593  *  1. enable/disable "reduced control frames tx power
 594  *  2. update the "kill)ack_mask" and "kill_cts_mask"
 595  *
 596  * If "reduced tx power" is enabled, uCode shall
 597  *  1. ACK/Back/CTS rate shall reduced to 6Mbps
 598  *  2. not use duplciate 20/40MHz mode
 599  */
 600 static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv,
 601                                 struct iwl_bt_uart_msg *uart_msg)
 602 {
 603         bool need_update = false;
 604         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 605         int ave_rssi;
 606
 607         if (!ctx->vif || (ctx->vif->type != NL80211_IFTYPE_STATION)) {
 608                 IWL_DEBUG_INFO(priv, "BSS ctx not active or not in sta mode\n");
 609                 return false;
 610         }
 611
 612         ave_rssi = ieee80211_ave_rssi(ctx->vif);
 613         if (!ave_rssi) {
 614                 /* no rssi data, no changes to reduce tx power */
 615                 IWL_DEBUG_COEX(priv, "no rssi data available\n");
 616                 return need_update;
 617         }
 618         if (!priv->reduced_txpower &&
 619             !iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
 620             (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) &&
 621             (uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 622             BT_UART_MSG_FRAME3OBEX_MSK)) &&
 623             !(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 624             BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK))) {
 625                 /* enabling reduced tx power */
 626                 priv->reduced_txpower = true;
 627                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 628                 need_update = true;
 629         } else if (priv->reduced_txpower &&
 630                    (iwl_is_associated(priv, IWL_RXON_CTX_PAN) ||
 631                    (ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) ||
 632                    (uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 633                    BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK)) ||
 634                    !(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 635                    BT_UART_MSG_FRAME3OBEX_MSK)))) {
 636                 /* disable reduced tx power */
 637                 priv->reduced_txpower = false;
 638                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 639                 need_update = true;
 640         }
 641
 642         return need_update;
 643 }
 644
 645 static void iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
 646                                          struct iwl_rx_cmd_buffer *rxb)
 647 {
 648         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 649         struct iwl_bt_coex_profile_notif *coex = (void *)pkt->data;
 650         struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
 651
 652         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 653                 /* bt coex disabled */
 654                 return;
 655         }
 656
 657         IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
 658         IWL_DEBUG_COEX(priv, "    status: %d\n", coex->bt_status);
 659         IWL_DEBUG_COEX(priv, "    traffic load: %d\n", coex->bt_traffic_load);
 660         IWL_DEBUG_COEX(priv, "    CI compliance: %d\n",
 661                         coex->bt_ci_compliance);
 662         iwlagn_print_uartmsg(priv, uart_msg);
 663
 664         priv->last_bt_traffic_load = priv->bt_traffic_load;
 665         priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
 666
 667         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
 668                 if (priv->bt_status != coex->bt_status ||
 669                     priv->last_bt_traffic_load != coex->bt_traffic_load) {
 670                         if (coex->bt_status) {
 671                                 /* BT on */
 672                                 if (!priv->bt_ch_announce)
 673                                         priv->bt_traffic_load =
 674                                                 IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
 675                                 else
 676                                         priv->bt_traffic_load =
 677                                                 coex->bt_traffic_load;
 678                         } else {
 679                                 /* BT off */
 680                                 priv->bt_traffic_load =
 681                                         IWL_BT_COEX_TRAFFIC_LOAD_NONE;
 682                         }
 683                         priv->bt_status = coex->bt_status;
 684                         queue_work(priv->workqueue,
 685                                    &priv->bt_traffic_change_work);
 686                 }
 687         }
 688
 689         /* schedule to send runtime bt_config */
 690         /* check reduce power before change ack/cts kill mask */
 691         if (iwlagn_fill_txpower_mode(priv, uart_msg) ||
 692             iwlagn_set_kill_msk(priv, uart_msg))
 693                 queue_work(priv->workqueue, &priv->bt_runtime_config);
 694
 695
 696         /* FIXME: based on notification, adjust the prio_boost */
 697
 698         priv->bt_ci_compliance = coex->bt_ci_compliance;
 699 }
 700
 701 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
 702 {
 703         priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
 704                 iwlagn_bt_coex_profile_notif;
 705 }
 706
 707 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
 708 {
 709         INIT_WORK(&priv->bt_traffic_change_work,
 710                   iwlagn_bt_traffic_change_work);
 711 }
 712
 713 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
 714 {
 715         cancel_work_sync(&priv->bt_traffic_change_work);
 716 }
 717
 718 static bool is_single_rx_stream(struct iwl_priv *priv)
 719 {
 720         return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
 721                priv->current_ht_config.single_chain_sufficient;
 722 }
 723
 724 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 725 #define IWL_NUM_RX_CHAINS_SINGLE        2
 726 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 727 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 728
 729 /*
 730  * Determine how many receiver/antenna chains to use.
 731  *
 732  * More provides better reception via diversity.  Fewer saves power
 733  * at the expense of throughput, but only when not in powersave to
 734  * start with.
 735  *
 736  * MIMO (dual stream) requires at least 2, but works better with 3.
 737  * This does not determine *which* chains to use, just how many.
 738  */
 739 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 740 {
 741         if (priv->lib->bt_params &&
 742             priv->lib->bt_params->advanced_bt_coexist &&
 743             (priv->bt_full_concurrent ||
 744              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 745                 /*
 746                  * only use chain 'A' in bt high traffic load or
 747                  * full concurrency mode
 748                  */
 749                 return IWL_NUM_RX_CHAINS_SINGLE;
 750         }
 751         /* # of Rx chains to use when expecting MIMO. */
 752         if (is_single_rx_stream(priv))
 753                 return IWL_NUM_RX_CHAINS_SINGLE;
 754         else
 755                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 756 }
 757
 758 /*
 759  * When we are in power saving mode, unless device support spatial
 760  * multiplexing power save, use the active count for rx chain count.
 761  */
 762 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 763 {
 764         /* # Rx chains when idling, depending on SMPS mode */
 765         switch (priv->current_ht_config.smps) {
 766         case IEEE80211_SMPS_STATIC:
 767         case IEEE80211_SMPS_DYNAMIC:
 768                 return IWL_NUM_IDLE_CHAINS_SINGLE;
 769         case IEEE80211_SMPS_AUTOMATIC:
 770         case IEEE80211_SMPS_OFF:
 771                 return active_cnt;
 772         default:
 773                 WARN(1, "invalid SMPS mode %d",
 774                      priv->current_ht_config.smps);
 775                 return active_cnt;
 776         }
 777 }
 778
 779 /* up to 4 chains */
 780 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
 781 {
 782         u8 res;
 783         res = (chain_bitmap & BIT(0)) >> 0;
 784         res += (chain_bitmap & BIT(1)) >> 1;
 785         res += (chain_bitmap & BIT(2)) >> 2;
 786         res += (chain_bitmap & BIT(3)) >> 3;
 787         return res;
 788 }
 789
 790 /**
 791  * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
 792  *
 793  * Selects how many and which Rx receivers/antennas/chains to use.
 794  * This should not be used for scan command ... it puts data in wrong place.
 795  */
 796 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 797 {
 798         bool is_single = is_single_rx_stream(priv);
 799         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 800         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
 801         u32 active_chains;
 802         u16 rx_chain;
 803
 804         /* Tell uCode which antennas are actually connected.
 805          * Before first association, we assume all antennas are connected.
 806          * Just after first association, iwl_chain_noise_calibration()
 807          *    checks which antennas actually *are* connected. */
 808         if (priv->chain_noise_data.active_chains)
 809                 active_chains = priv->chain_noise_data.active_chains;
 810         else
 811                 active_chains = priv->nvm_data->valid_rx_ant;
 812
 813         if (priv->lib->bt_params &&
 814             priv->lib->bt_params->advanced_bt_coexist &&
 815             (priv->bt_full_concurrent ||
 816              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 817                 /*
 818                  * only use chain 'A' in bt high traffic load or
 819                  * full concurrency mode
 820                  */
 821                 active_chains = first_antenna(active_chains);
 822         }
 823
 824         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
 825
 826         /* How many receivers should we use? */
 827         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
 828         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
 829
 830
 831         /* correct rx chain count according hw settings
 832          * and chain noise calibration
 833          */
 834         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
 835         if (valid_rx_cnt < active_rx_cnt)
 836                 active_rx_cnt = valid_rx_cnt;
 837
 838         if (valid_rx_cnt < idle_rx_cnt)
 839                 idle_rx_cnt = valid_rx_cnt;
 840
 841         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
 842         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
 843
 844         ctx->staging.rx_chain = cpu_to_le16(rx_chain);
 845
 846         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
 847                 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
 848         else
 849                 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
 850
 851         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
 852                         ctx->staging.rx_chain,
 853                         active_rx_cnt, idle_rx_cnt);
 854
 855         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
 856                 active_rx_cnt < idle_rx_cnt);
 857 }
 858
 859 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
 860 {
 861         int i;
 862         u8 ind = ant;
 863
 864         if (priv->band == NL80211_BAND_2GHZ &&
 865             priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
 866                 return 0;
 867
 868         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 869                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 870                 if (valid & BIT(ind))
 871                         return ind;
 872         }
 873         return ant;
 874 }
 875
 876 #ifdef CONFIG_PM_SLEEP
 877 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
 878 {
 879         int i;
 880
 881         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
 882                 out[i] = cpu_to_le16(p1k[i]);
 883 }
 884
 885 struct wowlan_key_data {
 886         struct iwl_rxon_context *ctx;
 887         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
 888         struct iwlagn_wowlan_tkip_params_cmd *tkip;
 889         const u8 *bssid;
 890         bool error, use_rsc_tsc, use_tkip;
 891 };
 892
 893
 894 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
 895                                struct ieee80211_vif *vif,
 896                                struct ieee80211_sta *sta,
 897                                struct ieee80211_key_conf *key,
 898                                void *_data)
 899 {
 900         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 901         struct wowlan_key_data *data = _data;
 902         struct iwl_rxon_context *ctx = data->ctx;
 903         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
 904         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 905         struct iwlagn_p1k_cache *rx_p1ks;
 906         u8 *rx_mic_key;
 907         struct ieee80211_key_seq seq;
 908         u32 cur_rx_iv32 = 0;
 909         u16 p1k[IWLAGN_P1K_SIZE];
 910         int ret, i;
 911
 912         mutex_lock(&priv->mutex);
 913
 914         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 915              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 916              !sta && !ctx->key_mapping_keys)
 917                 ret = iwl_set_default_wep_key(priv, ctx, key);
 918         else
 919                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
 920
 921         if (ret) {
 922                 IWL_ERR(priv, "Error setting key during suspend!\n");
 923                 data->error = true;
 924         }
 925
 926         switch (key->cipher) {
 927         case WLAN_CIPHER_SUITE_TKIP:
 928                 if (sta) {
 929                         u64 pn64;
 930
 931                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
 932                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
 933
 934                         rx_p1ks = data->tkip->rx_uni;
 935
 936                         pn64 = atomic64_read(&key->tx_pn);
 937                         tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
 938                         tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
 939
 940                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
 941                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
 942
 943                         memcpy(data->tkip->mic_keys.tx,
 944                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
 945                                IWLAGN_MIC_KEY_SIZE);
 946
 947                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
 948                 } else {
 949                         tkip_sc =
 950                                 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
 951                         rx_p1ks = data->tkip->rx_multi;
 952                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
 953                 }
 954
 955                 /*
 956                  * For non-QoS this relies on the fact that both the uCode and
 957                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 958                  * for checking the IV in the frames.
 959                  */
 960                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
 961                         ieee80211_get_key_rx_seq(key, i, &seq);
 962                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
 963                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
 964                         /* wrapping isn't allowed, AP must rekey */
 965                         if (seq.tkip.iv32 > cur_rx_iv32)
 966                                 cur_rx_iv32 = seq.tkip.iv32;
 967                 }
 968
 969                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
 970                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
 971                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
 972                                           cur_rx_iv32 + 1, p1k);
 973                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
 974
 975                 memcpy(rx_mic_key,
 976                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
 977                        IWLAGN_MIC_KEY_SIZE);
 978
 979                 data->use_tkip = true;
 980                 data->use_rsc_tsc = true;
 981                 break;
 982         case WLAN_CIPHER_SUITE_CCMP:
 983                 if (sta) {
 984                         u64 pn64;
 985
 986                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
 987                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
 988
 989                         pn64 = atomic64_read(&key->tx_pn);
 990                         aes_tx_sc->pn = cpu_to_le64(pn64);
 991                 } else
 992                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
 993
 994                 /*
 995                  * For non-QoS this relies on the fact that both the uCode and
 996                  * mac80211 use TID 0 for checking the IV in the frames.
 997                  */
 998                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
 999                         u8 *pn = seq.ccmp.pn;
1000
1001                         ieee80211_get_key_rx_seq(key, i, &seq);
1002                         aes_sc[i].pn = cpu_to_le64(
1003                                         (u64)pn[5] |
1004                                         ((u64)pn[4] << 8) |
1005                                         ((u64)pn[3] << 16) |
1006                                         ((u64)pn[2] << 24) |
1007                                         ((u64)pn[1] << 32) |
1008                                         ((u64)pn[0] << 40));
1009                 }
1010                 data->use_rsc_tsc = true;
1011                 break;
1012         }
1013
1014         mutex_unlock(&priv->mutex);
1015 }
1016
1017 int iwlagn_send_patterns(struct iwl_priv *priv,
1018                         struct cfg80211_wowlan *wowlan)
1019 {
1020         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1021         struct iwl_host_cmd cmd = {
1022                 .id = REPLY_WOWLAN_PATTERNS,
1023                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1024         };
1025         int i, err;
1026
1027         if (!wowlan->n_patterns)
1028                 return 0;
1029
1030         cmd.len[0] = sizeof(*pattern_cmd) +
1031                 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1032
1033         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1034         if (!pattern_cmd)
1035                 return -ENOMEM;
1036
1037         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1038
1039         for (i = 0; i < wowlan->n_patterns; i++) {
1040                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1041
1042                 memcpy(&pattern_cmd->patterns[i].mask,
1043                         wowlan->patterns[i].mask, mask_len);
1044                 memcpy(&pattern_cmd->patterns[i].pattern,
1045                         wowlan->patterns[i].pattern,
1046                         wowlan->patterns[i].pattern_len);
1047                 pattern_cmd->patterns[i].mask_size = mask_len;
1048                 pattern_cmd->patterns[i].pattern_size =
1049                         wowlan->patterns[i].pattern_len;
1050         }
1051
1052         cmd.data[0] = pattern_cmd;
1053         err = iwl_dvm_send_cmd(priv, &cmd);
1054         kfree(pattern_cmd);
1055         return err;
1056 }
1057
1058 int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan)
1059 {
1060         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
1061         struct iwl_rxon_cmd rxon;
1062         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1063         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
1064         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
1065         struct iwlagn_d3_config_cmd d3_cfg_cmd = {
1066                 /*
1067                  * Program the minimum sleep time to 10 seconds, as many
1068                  * platforms have issues processing a wakeup signal while
1069                  * still being in the process of suspending.
1070                  */
1071                 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1072         };
1073         struct wowlan_key_data key_data = {
1074                 .ctx = ctx,
1075                 .bssid = ctx->active.bssid_addr,
1076                 .use_rsc_tsc = false,
1077                 .tkip = &tkip_cmd,
1078                 .use_tkip = false,
1079         };
1080         int ret, i;
1081         u16 seq;
1082
1083         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1084         if (!key_data.rsc_tsc)
1085                 return -ENOMEM;
1086
1087         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1088
1089         /*
1090          * We know the last used seqno, and the uCode expects to know that
1091          * one, it will increment before TX.
1092          */
1093         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1094         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1095
1096         /*
1097          * For QoS counters, we store the one to use next, so subtract 0x10
1098          * since the uCode will add 0x10 before using the value.
1099          */
1100         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1101                 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1102                 seq -= 0x10;
1103                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1104         }
1105
1106         if (wowlan->disconnect)
1107                 wakeup_filter_cmd.enabled |=
1108                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1109                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1110         if (wowlan->magic_pkt)
1111                 wakeup_filter_cmd.enabled |=
1112                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1113         if (wowlan->gtk_rekey_failure)
1114                 wakeup_filter_cmd.enabled |=
1115                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1116         if (wowlan->eap_identity_req)
1117                 wakeup_filter_cmd.enabled |=
1118                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1119         if (wowlan->four_way_handshake)
1120                 wakeup_filter_cmd.enabled |=
1121                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1122         if (wowlan->n_patterns)
1123                 wakeup_filter_cmd.enabled |=
1124                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1125
1126         if (wowlan->rfkill_release)
1127                 d3_cfg_cmd.wakeup_flags |=
1128                         cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1129
1130         iwl_scan_cancel_timeout(priv, 200);
1131
1132         memcpy(&rxon, &ctx->active, sizeof(rxon));
1133
1134         priv->ucode_loaded = false;
1135         iwl_trans_stop_device(priv->trans);
1136         ret = iwl_trans_start_hw(priv->trans);
1137         if (ret)
1138                 goto out;
1139
1140         priv->wowlan = true;
1141
1142         ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
1143         if (ret)
1144                 goto out;
1145
1146         /* now configure WoWLAN ucode */
1147         ret = iwl_alive_start(priv);
1148         if (ret)
1149                 goto out;
1150
1151         memcpy(&ctx->staging, &rxon, sizeof(rxon));
1152         ret = iwlagn_commit_rxon(priv, ctx);
1153         if (ret)
1154                 goto out;
1155
1156         ret = iwl_power_update_mode(priv, true);
1157         if (ret)
1158                 goto out;
1159
1160         if (!iwlwifi_mod_params.sw_crypto) {
1161                 /* mark all keys clear */
1162                 priv->ucode_key_table = 0;
1163                 ctx->key_mapping_keys = 0;
1164
1165                 /*
1166                  * This needs to be unlocked due to lock ordering
1167                  * constraints. Since we're in the suspend path
1168                  * that isn't really a problem though.
1169                  */
1170                 mutex_unlock(&priv->mutex);
1171                 ieee80211_iter_keys(priv->hw, ctx->vif,
1172                                     iwlagn_wowlan_program_keys,
1173                                     &key_data);
1174                 mutex_lock(&priv->mutex);
1175                 if (key_data.error) {
1176                         ret = -EIO;
1177                         goto out;
1178                 }
1179
1180                 if (key_data.use_rsc_tsc) {
1181                         struct iwl_host_cmd rsc_tsc_cmd = {
1182                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1183                                 .data[0] = key_data.rsc_tsc,
1184                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1185                                 .len[0] = sizeof(*key_data.rsc_tsc),
1186                         };
1187
1188                         ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd);
1189                         if (ret)
1190                                 goto out;
1191                 }
1192
1193                 if (key_data.use_tkip) {
1194                         ret = iwl_dvm_send_cmd_pdu(priv,
1195                                                  REPLY_WOWLAN_TKIP_PARAMS,
1196                                                  0, sizeof(tkip_cmd),
1197                                                  &tkip_cmd);
1198                         if (ret)
1199                                 goto out;
1200                 }
1201
1202                 if (priv->have_rekey_data) {
1203                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1204                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1205                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1206                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1207                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1208                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
1209
1210                         ret = iwl_dvm_send_cmd_pdu(priv,
1211                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
1212                                                  0, sizeof(kek_kck_cmd),
1213                                                  &kek_kck_cmd);
1214                         if (ret)
1215                                 goto out;
1216                 }
1217         }
1218
1219         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, 0,
1220                                      sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1221         if (ret)
1222                 goto out;
1223
1224         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER,
1225                                  0, sizeof(wakeup_filter_cmd),
1226                                  &wakeup_filter_cmd);
1227         if (ret)
1228                 goto out;
1229
1230         ret = iwlagn_send_patterns(priv, wowlan);
1231  out:
1232         kfree(key_data.rsc_tsc);
1233         return ret;
1234 }
1235 #endif
1236
1237 int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
1238 {
1239         if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
1240                 IWL_WARN(priv, "Not sending command - %s KILL\n",
1241                          iwl_is_rfkill(priv) ? "RF" : "CT");
1242                 return -EIO;
1243         }
1244
1245         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
1246                 IWL_ERR(priv, "Command %s failed: FW Error\n",
1247                         iwl_get_cmd_string(priv->trans, cmd->id));
1248                 return -EIO;
1249         }
1250
1251         /*
1252          * This can happen upon FW ASSERT: we clear the STATUS_FW_ERROR flag
1253          * in iwl_down but cancel the workers only later.
1254          */
1255         if (!priv->ucode_loaded) {
1256                 IWL_ERR(priv, "Fw not loaded - dropping CMD: %x\n", cmd->id);
1257                 return -EIO;
1258         }
1259
1260         /*
1261          * Synchronous commands from this op-mode must hold
1262          * the mutex, this ensures we don't try to send two
1263          * (or more) synchronous commands at a time.
1264          */
1265         if (!(cmd->flags & CMD_ASYNC))
1266                 lockdep_assert_held(&priv->mutex);
1267
1268         return iwl_trans_send_cmd(priv->trans, cmd);
1269 }
1270
1271 int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id,
1272                          u32 flags, u16 len, const void *data)
1273 {
1274         struct iwl_host_cmd cmd = {
1275                 .id = id,
1276                 .len = { len, },
1277                 .data = { data, },
1278                 .flags = flags,
1279         };
1280
1281         return iwl_dvm_send_cmd(priv, &cmd);
1282 }