drivers/net/wireless/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 <ilw@linux.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 ieee80211_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 == IEEE80211_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
 209 /* Loose Coex */
 210 static const __le32 iwlagn_loose_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 211         cpu_to_le32(0xaaaaaaaa),
 212         cpu_to_le32(0xaaaaaaaa),
 213         cpu_to_le32(0xaeaaaaaa),
 214         cpu_to_le32(0xaaaaaaaa),
 215         cpu_to_le32(0xcc00ff28),
 216         cpu_to_le32(0x0000aaaa),
 217         cpu_to_le32(0xcc00aaaa),
 218         cpu_to_le32(0x0000aaaa),
 219         cpu_to_le32(0x00000000),
 220         cpu_to_le32(0x00000000),
 221         cpu_to_le32(0xf0005000),
 222         cpu_to_le32(0xf0005000),
 223 };
 224
 225 /* Full concurrency */
 226 static const __le32 iwlagn_concurrent_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 227         cpu_to_le32(0xaaaaaaaa),
 228         cpu_to_le32(0xaaaaaaaa),
 229         cpu_to_le32(0xaaaaaaaa),
 230         cpu_to_le32(0xaaaaaaaa),
 231         cpu_to_le32(0xaaaaaaaa),
 232         cpu_to_le32(0xaaaaaaaa),
 233         cpu_to_le32(0xaaaaaaaa),
 234         cpu_to_le32(0xaaaaaaaa),
 235         cpu_to_le32(0x00000000),
 236         cpu_to_le32(0x00000000),
 237         cpu_to_le32(0x00000000),
 238         cpu_to_le32(0x00000000),
 239 };
 240
 241 void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
 242 {
 243         struct iwl_basic_bt_cmd basic = {
 244                 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
 245                 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
 246                 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
 247                 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
 248         };
 249         struct iwl_bt_cmd_v1 bt_cmd_v1;
 250         struct iwl_bt_cmd_v2 bt_cmd_v2;
 251         int ret;
 252
 253         BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
 254                         sizeof(basic.bt3_lookup_table));
 255
 256         if (priv->lib->bt_params) {
 257                 /*
 258                  * newer generation of devices (2000 series and newer)
 259                  * use the version 2 of the bt command
 260                  * we need to make sure sending the host command
 261                  * with correct data structure to avoid uCode assert
 262                  */
 263                 if (priv->lib->bt_params->bt_session_2) {
 264                         bt_cmd_v2.prio_boost = cpu_to_le32(
 265                                 priv->lib->bt_params->bt_prio_boost);
 266                         bt_cmd_v2.tx_prio_boost = 0;
 267                         bt_cmd_v2.rx_prio_boost = 0;
 268                 } else {
 269                         /* older version only has 8 bits */
 270                         WARN_ON(priv->lib->bt_params->bt_prio_boost & ~0xFF);
 271                         bt_cmd_v1.prio_boost =
 272                                 priv->lib->bt_params->bt_prio_boost;
 273                         bt_cmd_v1.tx_prio_boost = 0;
 274                         bt_cmd_v1.rx_prio_boost = 0;
 275                 }
 276         } else {
 277                 IWL_ERR(priv, "failed to construct BT Coex Config\n");
 278                 return;
 279         }
 280
 281         /*
 282          * Possible situations when BT needs to take over for receive,
 283          * at the same time where STA needs to response to AP's frame(s),
 284          * reduce the tx power of the required response frames, by that,
 285          * allow the concurrent BT receive & WiFi transmit
 286          * (BT - ANT A, WiFi -ANT B), without interference to one another
 287          *
 288          * Reduced tx power apply to control frames only (ACK/Back/CTS)
 289          * when indicated by the BT config command
 290          */
 291         basic.kill_ack_mask = priv->kill_ack_mask;
 292         basic.kill_cts_mask = priv->kill_cts_mask;
 293         if (priv->reduced_txpower)
 294                 basic.reduce_txpower = IWLAGN_BT_REDUCED_TX_PWR;
 295         basic.valid = priv->bt_valid;
 296
 297         /*
 298          * Configure BT coex mode to "no coexistence" when the
 299          * user disabled BT coexistence, we have no interface
 300          * (might be in monitor mode), or the interface is in
 301          * IBSS mode (no proper uCode support for coex then).
 302          */
 303         if (!iwlwifi_mod_params.bt_coex_active ||
 304             priv->iw_mode == NL80211_IFTYPE_ADHOC) {
 305                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
 306         } else {
 307                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
 308                                         IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
 309
 310                 if (!priv->bt_enable_pspoll)
 311                         basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 312                 else
 313                         basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 314
 315                 if (priv->bt_ch_announce)
 316                         basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
 317                 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
 318         }
 319         priv->bt_enable_flag = basic.flags;
 320         if (priv->bt_full_concurrent)
 321                 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
 322                         sizeof(iwlagn_concurrent_lookup));
 323         else
 324                 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
 325                         sizeof(iwlagn_def_3w_lookup));
 326
 327         IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
 328                        basic.flags ? "active" : "disabled",
 329                        priv->bt_full_concurrent ?
 330                        "full concurrency" : "3-wire");
 331
 332         if (priv->lib->bt_params->bt_session_2) {
 333                 memcpy(&bt_cmd_v2.basic, &basic,
 334                         sizeof(basic));
 335                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 336                         0, sizeof(bt_cmd_v2), &bt_cmd_v2);
 337         } else {
 338                 memcpy(&bt_cmd_v1.basic, &basic,
 339                         sizeof(basic));
 340                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 341                         0, sizeof(bt_cmd_v1), &bt_cmd_v1);
 342         }
 343         if (ret)
 344                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 345
 346 }
 347
 348 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
 349 {
 350         struct iwl_rxon_context *ctx, *found_ctx = NULL;
 351         bool found_ap = false;
 352
 353         lockdep_assert_held(&priv->mutex);
 354
 355         /* Check whether AP or GO mode is active. */
 356         if (rssi_ena) {
 357                 for_each_context(priv, ctx) {
 358                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
 359                             iwl_is_associated_ctx(ctx)) {
 360                                 found_ap = true;
 361                                 break;
 362                         }
 363                 }
 364         }
 365
 366         /*
 367          * If disable was received or If GO/AP mode, disable RSSI
 368          * measurements.
 369          */
 370         if (!rssi_ena || found_ap) {
 371                 if (priv->cur_rssi_ctx) {
 372                         ctx = priv->cur_rssi_ctx;
 373                         ieee80211_disable_rssi_reports(ctx->vif);
 374                         priv->cur_rssi_ctx = NULL;
 375                 }
 376                 return;
 377         }
 378
 379         /*
 380          * If rssi measurements need to be enabled, consider all cases now.
 381          * Figure out how many contexts are active.
 382          */
 383         for_each_context(priv, ctx) {
 384                 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
 385                     iwl_is_associated_ctx(ctx)) {
 386                         found_ctx = ctx;
 387                         break;
 388                 }
 389         }
 390
 391         /*
 392          * rssi monitor already enabled for the correct interface...nothing
 393          * to do.
 394          */
 395         if (found_ctx == priv->cur_rssi_ctx)
 396                 return;
 397
 398         /*
 399          * Figure out if rssi monitor is currently enabled, and needs
 400          * to be changed. If rssi monitor is already enabled, disable
 401          * it first else just enable rssi measurements on the
 402          * interface found above.
 403          */
 404         if (priv->cur_rssi_ctx) {
 405                 ctx = priv->cur_rssi_ctx;
 406                 if (ctx->vif)
 407                         ieee80211_disable_rssi_reports(ctx->vif);
 408         }
 409
 410         priv->cur_rssi_ctx = found_ctx;
 411
 412         if (!found_ctx)
 413                 return;
 414
 415         ieee80211_enable_rssi_reports(found_ctx->vif,
 416                         IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
 417                         IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
 418 }
 419
 420 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
 421 {
 422         return (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 423                 BT_UART_MSG_FRAME3SCOESCO_POS;
 424 }
 425
 426 static void iwlagn_bt_traffic_change_work(struct work_struct *work)
 427 {
 428         struct iwl_priv *priv =
 429                 container_of(work, struct iwl_priv, bt_traffic_change_work);
 430         struct iwl_rxon_context *ctx;
 431         int smps_request = -1;
 432
 433         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 434                 /* bt coex disabled */
 435                 return;
 436         }
 437
 438         /*
 439          * Note: bt_traffic_load can be overridden by scan complete and
 440          * coex profile notifications. Ignore that since only bad consequence
 441          * can be not matching debug print with actual state.
 442          */
 443         IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
 444                        priv->bt_traffic_load);
 445
 446         switch (priv->bt_traffic_load) {
 447         case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
 448                 if (priv->bt_status)
 449                         smps_request = IEEE80211_SMPS_DYNAMIC;
 450                 else
 451                         smps_request = IEEE80211_SMPS_AUTOMATIC;
 452                 break;
 453         case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
 454                 smps_request = IEEE80211_SMPS_DYNAMIC;
 455                 break;
 456         case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
 457         case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
 458                 smps_request = IEEE80211_SMPS_STATIC;
 459                 break;
 460         default:
 461                 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
 462                         priv->bt_traffic_load);
 463                 break;
 464         }
 465
 466         mutex_lock(&priv->mutex);
 467
 468         /*
 469          * We can not send command to firmware while scanning. When the scan
 470          * complete we will schedule this work again. We do check with mutex
 471          * locked to prevent new scan request to arrive. We do not check
 472          * STATUS_SCANNING to avoid race when queue_work two times from
 473          * different notifications, but quit and not perform any work at all.
 474          */
 475         if (test_bit(STATUS_SCAN_HW, &priv->status))
 476                 goto out;
 477
 478         iwl_update_chain_flags(priv);
 479
 480         if (smps_request != -1) {
 481                 priv->current_ht_config.smps = smps_request;
 482                 for_each_context(priv, ctx) {
 483                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
 484                                 ieee80211_request_smps(ctx->vif, smps_request);
 485                 }
 486         }
 487
 488         /*
 489          * Dynamic PS poll related functionality. Adjust RSSI measurements if
 490          * necessary.
 491          */
 492         iwlagn_bt_coex_rssi_monitor(priv);
 493 out:
 494         mutex_unlock(&priv->mutex);
 495 }
 496
 497 /*
 498  * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
 499  * correct interface or disable it if this is the last interface to be
 500  * removed.
 501  */
 502 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
 503 {
 504         if (priv->bt_is_sco &&
 505             priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
 506                 iwlagn_bt_adjust_rssi_monitor(priv, true);
 507         else
 508                 iwlagn_bt_adjust_rssi_monitor(priv, false);
 509 }
 510
 511 static void iwlagn_print_uartmsg(struct iwl_priv *priv,
 512                                 struct iwl_bt_uart_msg *uart_msg)
 513 {
 514         IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
 515                         "Update Req = 0x%X\n",
 516                 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
 517                         BT_UART_MSG_FRAME1MSGTYPE_POS,
 518                 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
 519                         BT_UART_MSG_FRAME1SSN_POS,
 520                 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
 521                         BT_UART_MSG_FRAME1UPDATEREQ_POS);
 522
 523         IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
 524                         "Chl_SeqN = 0x%X, In band = 0x%X\n",
 525                 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
 526                         BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
 527                 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
 528                         BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
 529                 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
 530                         BT_UART_MSG_FRAME2CHLSEQN_POS,
 531                 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
 532                         BT_UART_MSG_FRAME2INBAND_POS);
 533
 534         IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
 535                         "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X\n",
 536                 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 537                         BT_UART_MSG_FRAME3SCOESCO_POS,
 538                 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
 539                         BT_UART_MSG_FRAME3SNIFF_POS,
 540                 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
 541                         BT_UART_MSG_FRAME3A2DP_POS,
 542                 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
 543                         BT_UART_MSG_FRAME3ACL_POS,
 544                 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
 545                         BT_UART_MSG_FRAME3MASTER_POS,
 546                 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
 547                         BT_UART_MSG_FRAME3OBEX_POS);
 548
 549         IWL_DEBUG_COEX(priv, "Idle duration = 0x%X\n",
 550                 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
 551                         BT_UART_MSG_FRAME4IDLEDURATION_POS);
 552
 553         IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
 554                         "eSCO Retransmissions = 0x%X\n",
 555                 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
 556                         BT_UART_MSG_FRAME5TXACTIVITY_POS,
 557                 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
 558                         BT_UART_MSG_FRAME5RXACTIVITY_POS,
 559                 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
 560                         BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
 561
 562         IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X\n",
 563                 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
 564                         BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
 565                 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
 566                         BT_UART_MSG_FRAME6DISCOVERABLE_POS);
 567
 568         IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
 569                         "0x%X, Inquiry = 0x%X, Connectable = 0x%X\n",
 570                 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
 571                         BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
 572                 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
 573                         BT_UART_MSG_FRAME7PAGE_POS,
 574                 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
 575                         BT_UART_MSG_FRAME7INQUIRY_POS,
 576                 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
 577                         BT_UART_MSG_FRAME7CONNECTABLE_POS);
 578 }
 579
 580 static bool iwlagn_set_kill_msk(struct iwl_priv *priv,
 581                                 struct iwl_bt_uart_msg *uart_msg)
 582 {
 583         bool need_update = false;
 584         u8 kill_msk = IWL_BT_KILL_REDUCE;
 585         static const __le32 bt_kill_ack_msg[3] = {
 586                 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
 587                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 588                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 589         static const __le32 bt_kill_cts_msg[3] = {
 590                 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
 591                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 592                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 593
 594         if (!priv->reduced_txpower)
 595                 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
 596                         ? IWL_BT_KILL_OVERRIDE : IWL_BT_KILL_DEFAULT;
 597         if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
 598             priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
 599                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
 600                 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
 601                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
 602                 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
 603                 need_update = true;
 604         }
 605         return need_update;
 606 }
 607
 608 /*
 609  * Upon RSSI changes, sends a bt config command with following changes
 610  *  1. enable/disable "reduced control frames tx power
 611  *  2. update the "kill)ack_mask" and "kill_cts_mask"
 612  *
 613  * If "reduced tx power" is enabled, uCode shall
 614  *  1. ACK/Back/CTS rate shall reduced to 6Mbps
 615  *  2. not use duplciate 20/40MHz mode
 616  */
 617 static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv,
 618                                 struct iwl_bt_uart_msg *uart_msg)
 619 {
 620         bool need_update = false;
 621         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 622         int ave_rssi;
 623
 624         if (!ctx->vif || (ctx->vif->type != NL80211_IFTYPE_STATION)) {
 625                 IWL_DEBUG_INFO(priv, "BSS ctx not active or not in sta mode\n");
 626                 return false;
 627         }
 628
 629         ave_rssi = ieee80211_ave_rssi(ctx->vif);
 630         if (!ave_rssi) {
 631                 /* no rssi data, no changes to reduce tx power */
 632                 IWL_DEBUG_COEX(priv, "no rssi data available\n");
 633                 return need_update;
 634         }
 635         if (!priv->reduced_txpower &&
 636             !iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
 637             (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) &&
 638             (uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 639             BT_UART_MSG_FRAME3OBEX_MSK)) &&
 640             !(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 641             BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK))) {
 642                 /* enabling reduced tx power */
 643                 priv->reduced_txpower = true;
 644                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 645                 need_update = true;
 646         } else if (priv->reduced_txpower &&
 647                    (iwl_is_associated(priv, IWL_RXON_CTX_PAN) ||
 648                    (ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) ||
 649                    (uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 650                    BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK)) ||
 651                    !(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 652                    BT_UART_MSG_FRAME3OBEX_MSK)))) {
 653                 /* disable reduced tx power */
 654                 priv->reduced_txpower = false;
 655                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 656                 need_update = true;
 657         }
 658
 659         return need_update;
 660 }
 661
 662 static void iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
 663                                          struct iwl_rx_cmd_buffer *rxb)
 664 {
 665         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 666         struct iwl_bt_coex_profile_notif *coex = (void *)pkt->data;
 667         struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
 668
 669         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 670                 /* bt coex disabled */
 671                 return;
 672         }
 673
 674         IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
 675         IWL_DEBUG_COEX(priv, "    status: %d\n", coex->bt_status);
 676         IWL_DEBUG_COEX(priv, "    traffic load: %d\n", coex->bt_traffic_load);
 677         IWL_DEBUG_COEX(priv, "    CI compliance: %d\n",
 678                         coex->bt_ci_compliance);
 679         iwlagn_print_uartmsg(priv, uart_msg);
 680
 681         priv->last_bt_traffic_load = priv->bt_traffic_load;
 682         priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
 683
 684         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
 685                 if (priv->bt_status != coex->bt_status ||
 686                     priv->last_bt_traffic_load != coex->bt_traffic_load) {
 687                         if (coex->bt_status) {
 688                                 /* BT on */
 689                                 if (!priv->bt_ch_announce)
 690                                         priv->bt_traffic_load =
 691                                                 IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
 692                                 else
 693                                         priv->bt_traffic_load =
 694                                                 coex->bt_traffic_load;
 695                         } else {
 696                                 /* BT off */
 697                                 priv->bt_traffic_load =
 698                                         IWL_BT_COEX_TRAFFIC_LOAD_NONE;
 699                         }
 700                         priv->bt_status = coex->bt_status;
 701                         queue_work(priv->workqueue,
 702                                    &priv->bt_traffic_change_work);
 703                 }
 704         }
 705
 706         /* schedule to send runtime bt_config */
 707         /* check reduce power before change ack/cts kill mask */
 708         if (iwlagn_fill_txpower_mode(priv, uart_msg) ||
 709             iwlagn_set_kill_msk(priv, uart_msg))
 710                 queue_work(priv->workqueue, &priv->bt_runtime_config);
 711
 712
 713         /* FIXME: based on notification, adjust the prio_boost */
 714
 715         priv->bt_ci_compliance = coex->bt_ci_compliance;
 716 }
 717
 718 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
 719 {
 720         priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
 721                 iwlagn_bt_coex_profile_notif;
 722 }
 723
 724 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
 725 {
 726         INIT_WORK(&priv->bt_traffic_change_work,
 727                   iwlagn_bt_traffic_change_work);
 728 }
 729
 730 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
 731 {
 732         cancel_work_sync(&priv->bt_traffic_change_work);
 733 }
 734
 735 static bool is_single_rx_stream(struct iwl_priv *priv)
 736 {
 737         return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
 738                priv->current_ht_config.single_chain_sufficient;
 739 }
 740
 741 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 742 #define IWL_NUM_RX_CHAINS_SINGLE        2
 743 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 744 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 745
 746 /*
 747  * Determine how many receiver/antenna chains to use.
 748  *
 749  * More provides better reception via diversity.  Fewer saves power
 750  * at the expense of throughput, but only when not in powersave to
 751  * start with.
 752  *
 753  * MIMO (dual stream) requires at least 2, but works better with 3.
 754  * This does not determine *which* chains to use, just how many.
 755  */
 756 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 757 {
 758         if (priv->lib->bt_params &&
 759             priv->lib->bt_params->advanced_bt_coexist &&
 760             (priv->bt_full_concurrent ||
 761              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 762                 /*
 763                  * only use chain 'A' in bt high traffic load or
 764                  * full concurrency mode
 765                  */
 766                 return IWL_NUM_RX_CHAINS_SINGLE;
 767         }
 768         /* # of Rx chains to use when expecting MIMO. */
 769         if (is_single_rx_stream(priv))
 770                 return IWL_NUM_RX_CHAINS_SINGLE;
 771         else
 772                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 773 }
 774
 775 /*
 776  * When we are in power saving mode, unless device support spatial
 777  * multiplexing power save, use the active count for rx chain count.
 778  */
 779 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 780 {
 781         /* # Rx chains when idling, depending on SMPS mode */
 782         switch (priv->current_ht_config.smps) {
 783         case IEEE80211_SMPS_STATIC:
 784         case IEEE80211_SMPS_DYNAMIC:
 785                 return IWL_NUM_IDLE_CHAINS_SINGLE;
 786         case IEEE80211_SMPS_AUTOMATIC:
 787         case IEEE80211_SMPS_OFF:
 788                 return active_cnt;
 789         default:
 790                 WARN(1, "invalid SMPS mode %d",
 791                      priv->current_ht_config.smps);
 792                 return active_cnt;
 793         }
 794 }
 795
 796 /* up to 4 chains */
 797 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
 798 {
 799         u8 res;
 800         res = (chain_bitmap & BIT(0)) >> 0;
 801         res += (chain_bitmap & BIT(1)) >> 1;
 802         res += (chain_bitmap & BIT(2)) >> 2;
 803         res += (chain_bitmap & BIT(3)) >> 3;
 804         return res;
 805 }
 806
 807 /**
 808  * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
 809  *
 810  * Selects how many and which Rx receivers/antennas/chains to use.
 811  * This should not be used for scan command ... it puts data in wrong place.
 812  */
 813 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 814 {
 815         bool is_single = is_single_rx_stream(priv);
 816         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 817         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
 818         u32 active_chains;
 819         u16 rx_chain;
 820
 821         /* Tell uCode which antennas are actually connected.
 822          * Before first association, we assume all antennas are connected.
 823          * Just after first association, iwl_chain_noise_calibration()
 824          *    checks which antennas actually *are* connected. */
 825         if (priv->chain_noise_data.active_chains)
 826                 active_chains = priv->chain_noise_data.active_chains;
 827         else
 828                 active_chains = priv->nvm_data->valid_rx_ant;
 829
 830         if (priv->lib->bt_params &&
 831             priv->lib->bt_params->advanced_bt_coexist &&
 832             (priv->bt_full_concurrent ||
 833              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 834                 /*
 835                  * only use chain 'A' in bt high traffic load or
 836                  * full concurrency mode
 837                  */
 838                 active_chains = first_antenna(active_chains);
 839         }
 840
 841         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
 842
 843         /* How many receivers should we use? */
 844         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
 845         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
 846
 847
 848         /* correct rx chain count according hw settings
 849          * and chain noise calibration
 850          */
 851         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
 852         if (valid_rx_cnt < active_rx_cnt)
 853                 active_rx_cnt = valid_rx_cnt;
 854
 855         if (valid_rx_cnt < idle_rx_cnt)
 856                 idle_rx_cnt = valid_rx_cnt;
 857
 858         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
 859         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
 860
 861         ctx->staging.rx_chain = cpu_to_le16(rx_chain);
 862
 863         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
 864                 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
 865         else
 866                 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
 867
 868         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
 869                         ctx->staging.rx_chain,
 870                         active_rx_cnt, idle_rx_cnt);
 871
 872         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
 873                 active_rx_cnt < idle_rx_cnt);
 874 }
 875
 876 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
 877 {
 878         int i;
 879         u8 ind = ant;
 880
 881         if (priv->band == IEEE80211_BAND_2GHZ &&
 882             priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
 883                 return 0;
 884
 885         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 886                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 887                 if (valid & BIT(ind))
 888                         return ind;
 889         }
 890         return ant;
 891 }
 892
 893 #ifdef CONFIG_PM_SLEEP
 894 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
 895 {
 896         int i;
 897
 898         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
 899                 out[i] = cpu_to_le16(p1k[i]);
 900 }
 901
 902 struct wowlan_key_data {
 903         struct iwl_rxon_context *ctx;
 904         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
 905         struct iwlagn_wowlan_tkip_params_cmd *tkip;
 906         const u8 *bssid;
 907         bool error, use_rsc_tsc, use_tkip;
 908 };
 909
 910
 911 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
 912                                struct ieee80211_vif *vif,
 913                                struct ieee80211_sta *sta,
 914                                struct ieee80211_key_conf *key,
 915                                void *_data)
 916 {
 917         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 918         struct wowlan_key_data *data = _data;
 919         struct iwl_rxon_context *ctx = data->ctx;
 920         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
 921         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 922         struct iwlagn_p1k_cache *rx_p1ks;
 923         u8 *rx_mic_key;
 924         struct ieee80211_key_seq seq;
 925         u32 cur_rx_iv32 = 0;
 926         u16 p1k[IWLAGN_P1K_SIZE];
 927         int ret, i;
 928
 929         mutex_lock(&priv->mutex);
 930
 931         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 932              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 933              !sta && !ctx->key_mapping_keys)
 934                 ret = iwl_set_default_wep_key(priv, ctx, key);
 935         else
 936                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
 937
 938         if (ret) {
 939                 IWL_ERR(priv, "Error setting key during suspend!\n");
 940                 data->error = true;
 941         }
 942
 943         switch (key->cipher) {
 944         case WLAN_CIPHER_SUITE_TKIP:
 945                 if (sta) {
 946                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
 947                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
 948
 949                         rx_p1ks = data->tkip->rx_uni;
 950
 951                         ieee80211_get_key_tx_seq(key, &seq);
 952                         tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
 953                         tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
 954
 955                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
 956                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
 957
 958                         memcpy(data->tkip->mic_keys.tx,
 959                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
 960                                IWLAGN_MIC_KEY_SIZE);
 961
 962                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
 963                 } else {
 964                         tkip_sc =
 965                                 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
 966                         rx_p1ks = data->tkip->rx_multi;
 967                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
 968                 }
 969
 970                 /*
 971                  * For non-QoS this relies on the fact that both the uCode and
 972                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 973                  * for checking the IV in the frames.
 974                  */
 975                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
 976                         ieee80211_get_key_rx_seq(key, i, &seq);
 977                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
 978                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
 979                         /* wrapping isn't allowed, AP must rekey */
 980                         if (seq.tkip.iv32 > cur_rx_iv32)
 981                                 cur_rx_iv32 = seq.tkip.iv32;
 982                 }
 983
 984                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
 985                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
 986                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
 987                                           cur_rx_iv32 + 1, p1k);
 988                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
 989
 990                 memcpy(rx_mic_key,
 991                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
 992                        IWLAGN_MIC_KEY_SIZE);
 993
 994                 data->use_tkip = true;
 995                 data->use_rsc_tsc = true;
 996                 break;
 997         case WLAN_CIPHER_SUITE_CCMP:
 998                 if (sta) {
 999                         u8 *pn = seq.ccmp.pn;
1000
1001                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
1002                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
1003
1004                         ieee80211_get_key_tx_seq(key, &seq);
1005                         aes_tx_sc->pn = cpu_to_le64(
1006                                         (u64)pn[5] |
1007                                         ((u64)pn[4] << 8) |
1008                                         ((u64)pn[3] << 16) |
1009                                         ((u64)pn[2] << 24) |
1010                                         ((u64)pn[1] << 32) |
1011                                         ((u64)pn[0] << 40));
1012                 } else
1013                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
1014
1015                 /*
1016                  * For non-QoS this relies on the fact that both the uCode and
1017                  * mac80211 use TID 0 for checking the IV in the frames.
1018                  */
1019                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1020                         u8 *pn = seq.ccmp.pn;
1021
1022                         ieee80211_get_key_rx_seq(key, i, &seq);
1023                         aes_sc->pn = cpu_to_le64(
1024                                         (u64)pn[5] |
1025                                         ((u64)pn[4] << 8) |
1026                                         ((u64)pn[3] << 16) |
1027                                         ((u64)pn[2] << 24) |
1028                                         ((u64)pn[1] << 32) |
1029                                         ((u64)pn[0] << 40));
1030                 }
1031                 data->use_rsc_tsc = true;
1032                 break;
1033         }
1034
1035         mutex_unlock(&priv->mutex);
1036 }
1037
1038 int iwlagn_send_patterns(struct iwl_priv *priv,
1039                         struct cfg80211_wowlan *wowlan)
1040 {
1041         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1042         struct iwl_host_cmd cmd = {
1043                 .id = REPLY_WOWLAN_PATTERNS,
1044                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1045         };
1046         int i, err;
1047
1048         if (!wowlan->n_patterns)
1049                 return 0;
1050
1051         cmd.len[0] = sizeof(*pattern_cmd) +
1052                 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1053
1054         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1055         if (!pattern_cmd)
1056                 return -ENOMEM;
1057
1058         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1059
1060         for (i = 0; i < wowlan->n_patterns; i++) {
1061                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1062
1063                 memcpy(&pattern_cmd->patterns[i].mask,
1064                         wowlan->patterns[i].mask, mask_len);
1065                 memcpy(&pattern_cmd->patterns[i].pattern,
1066                         wowlan->patterns[i].pattern,
1067                         wowlan->patterns[i].pattern_len);
1068                 pattern_cmd->patterns[i].mask_size = mask_len;
1069                 pattern_cmd->patterns[i].pattern_size =
1070                         wowlan->patterns[i].pattern_len;
1071         }
1072
1073         cmd.data[0] = pattern_cmd;
1074         err = iwl_dvm_send_cmd(priv, &cmd);
1075         kfree(pattern_cmd);
1076         return err;
1077 }
1078
1079 int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan)
1080 {
1081         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
1082         struct iwl_rxon_cmd rxon;
1083         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1084         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
1085         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
1086         struct iwlagn_d3_config_cmd d3_cfg_cmd = {
1087                 /*
1088                  * Program the minimum sleep time to 10 seconds, as many
1089                  * platforms have issues processing a wakeup signal while
1090                  * still being in the process of suspending.
1091                  */
1092                 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1093         };
1094         struct wowlan_key_data key_data = {
1095                 .ctx = ctx,
1096                 .bssid = ctx->active.bssid_addr,
1097                 .use_rsc_tsc = false,
1098                 .tkip = &tkip_cmd,
1099                 .use_tkip = false,
1100         };
1101         int ret, i;
1102         u16 seq;
1103
1104         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1105         if (!key_data.rsc_tsc)
1106                 return -ENOMEM;
1107
1108         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1109
1110         /*
1111          * We know the last used seqno, and the uCode expects to know that
1112          * one, it will increment before TX.
1113          */
1114         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1115         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1116
1117         /*
1118          * For QoS counters, we store the one to use next, so subtract 0x10
1119          * since the uCode will add 0x10 before using the value.
1120          */
1121         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1122                 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1123                 seq -= 0x10;
1124                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1125         }
1126
1127         if (wowlan->disconnect)
1128                 wakeup_filter_cmd.enabled |=
1129                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1130                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1131         if (wowlan->magic_pkt)
1132                 wakeup_filter_cmd.enabled |=
1133                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1134         if (wowlan->gtk_rekey_failure)
1135                 wakeup_filter_cmd.enabled |=
1136                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1137         if (wowlan->eap_identity_req)
1138                 wakeup_filter_cmd.enabled |=
1139                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1140         if (wowlan->four_way_handshake)
1141                 wakeup_filter_cmd.enabled |=
1142                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1143         if (wowlan->n_patterns)
1144                 wakeup_filter_cmd.enabled |=
1145                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1146
1147         if (wowlan->rfkill_release)
1148                 d3_cfg_cmd.wakeup_flags |=
1149                         cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1150
1151         iwl_scan_cancel_timeout(priv, 200);
1152
1153         memcpy(&rxon, &ctx->active, sizeof(rxon));
1154
1155         priv->ucode_loaded = false;
1156         iwl_trans_stop_device(priv->trans);
1157
1158         priv->wowlan = true;
1159
1160         ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
1161         if (ret)
1162                 goto out;
1163
1164         /* now configure WoWLAN ucode */
1165         ret = iwl_alive_start(priv);
1166         if (ret)
1167                 goto out;
1168
1169         memcpy(&ctx->staging, &rxon, sizeof(rxon));
1170         ret = iwlagn_commit_rxon(priv, ctx);
1171         if (ret)
1172                 goto out;
1173
1174         ret = iwl_power_update_mode(priv, true);
1175         if (ret)
1176                 goto out;
1177
1178         if (!iwlwifi_mod_params.sw_crypto) {
1179                 /* mark all keys clear */
1180                 priv->ucode_key_table = 0;
1181                 ctx->key_mapping_keys = 0;
1182
1183                 /*
1184                  * This needs to be unlocked due to lock ordering
1185                  * constraints. Since we're in the suspend path
1186                  * that isn't really a problem though.
1187                  */
1188                 mutex_unlock(&priv->mutex);
1189                 ieee80211_iter_keys(priv->hw, ctx->vif,
1190                                     iwlagn_wowlan_program_keys,
1191                                     &key_data);
1192                 mutex_lock(&priv->mutex);
1193                 if (key_data.error) {
1194                         ret = -EIO;
1195                         goto out;
1196                 }
1197
1198                 if (key_data.use_rsc_tsc) {
1199                         struct iwl_host_cmd rsc_tsc_cmd = {
1200                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1201                                 .data[0] = key_data.rsc_tsc,
1202                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1203                                 .len[0] = sizeof(*key_data.rsc_tsc),
1204                         };
1205
1206                         ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd);
1207                         if (ret)
1208                                 goto out;
1209                 }
1210
1211                 if (key_data.use_tkip) {
1212                         ret = iwl_dvm_send_cmd_pdu(priv,
1213                                                  REPLY_WOWLAN_TKIP_PARAMS,
1214                                                  0, sizeof(tkip_cmd),
1215                                                  &tkip_cmd);
1216                         if (ret)
1217                                 goto out;
1218                 }
1219
1220                 if (priv->have_rekey_data) {
1221                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1222                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1223                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1224                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1225                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1226                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
1227
1228                         ret = iwl_dvm_send_cmd_pdu(priv,
1229                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
1230                                                  0, sizeof(kek_kck_cmd),
1231                                                  &kek_kck_cmd);
1232                         if (ret)
1233                                 goto out;
1234                 }
1235         }
1236
1237         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, 0,
1238                                      sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1239         if (ret)
1240                 goto out;
1241
1242         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER,
1243                                  0, sizeof(wakeup_filter_cmd),
1244                                  &wakeup_filter_cmd);
1245         if (ret)
1246                 goto out;
1247
1248         ret = iwlagn_send_patterns(priv, wowlan);
1249  out:
1250         kfree(key_data.rsc_tsc);
1251         return ret;
1252 }
1253 #endif
1254
1255 int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
1256 {
1257         if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
1258                 IWL_WARN(priv, "Not sending command - %s KILL\n",
1259                          iwl_is_rfkill(priv) ? "RF" : "CT");
1260                 return -EIO;
1261         }
1262
1263         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
1264                 IWL_ERR(priv, "Command %s failed: FW Error\n",
1265                         iwl_dvm_get_cmd_string(cmd->id));
1266                 return -EIO;
1267         }
1268
1269         /*
1270          * This can happen upon FW ASSERT: we clear the STATUS_FW_ERROR flag
1271          * in iwl_down but cancel the workers only later.
1272          */
1273         if (!priv->ucode_loaded) {
1274                 IWL_ERR(priv, "Fw not loaded - dropping CMD: %x\n", cmd->id);
1275                 return -EIO;
1276         }
1277
1278         /*
1279          * Synchronous commands from this op-mode must hold
1280          * the mutex, this ensures we don't try to send two
1281          * (or more) synchronous commands at a time.
1282          */
1283         if (!(cmd->flags & CMD_ASYNC))
1284                 lockdep_assert_held(&priv->mutex);
1285
1286         return iwl_trans_send_cmd(priv->trans, cmd);
1287 }
1288
1289 int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id,
1290                          u32 flags, u16 len, const void *data)
1291 {
1292         struct iwl_host_cmd cmd = {
1293                 .id = id,
1294                 .len = { len, },
1295                 .data = { data, },
1296                 .flags = flags,
1297         };
1298
1299         return iwl_dvm_send_cmd(priv, &cmd);
1300 }