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

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 - 2012 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 LICENSE.GPL.
  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/init.h>
  33 #include <linux/sched.h>
  34 #include <net/mac80211.h>
  35
  36 #include "iwl-io.h"
  37 #include "iwl-agn-hw.h"
  38 #include "iwl-trans.h"
  39 #include "iwl-modparams.h"
  40
  41 #include "dev.h"
  42 #include "agn.h"
  43
  44 int iwlagn_hw_valid_rtc_data_addr(u32 addr)
  45 {
  46         return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) &&
  47                 (addr < IWLAGN_RTC_DATA_UPPER_BOUND);
  48 }
  49
  50 int iwlagn_send_tx_power(struct iwl_priv *priv)
  51 {
  52         struct iwlagn_tx_power_dbm_cmd tx_power_cmd;
  53         u8 tx_ant_cfg_cmd;
  54
  55         if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
  56                       "TX Power requested while scanning!\n"))
  57                 return -EAGAIN;
  58
  59         /* half dBm need to multiply */
  60         tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
  61
  62         if (tx_power_cmd.global_lmt > priv->eeprom_data->max_tx_pwr_half_dbm) {
  63                 /*
  64                  * For the newer devices which using enhanced/extend tx power
  65                  * table in EEPROM, the format is in half dBm. driver need to
  66                  * convert to dBm format before report to mac80211.
  67                  * By doing so, there is a possibility of 1/2 dBm resolution
  68                  * lost. driver will perform "round-up" operation before
  69                  * reporting, but it will cause 1/2 dBm tx power over the
  70                  * regulatory limit. Perform the checking here, if the
  71                  * "tx_power_user_lmt" is higher than EEPROM value (in
  72                  * half-dBm format), lower the tx power based on EEPROM
  73                  */
  74                 tx_power_cmd.global_lmt =
  75                         priv->eeprom_data->max_tx_pwr_half_dbm;
  76         }
  77         tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED;
  78         tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO;
  79
  80         if (IWL_UCODE_API(priv->fw->ucode_ver) == 1)
  81                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1;
  82         else
  83                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
  84
  85         return iwl_dvm_send_cmd_pdu(priv, tx_ant_cfg_cmd, CMD_SYNC,
  86                         sizeof(tx_power_cmd), &tx_power_cmd);
  87 }
  88
  89 void iwlagn_temperature(struct iwl_priv *priv)
  90 {
  91         lockdep_assert_held(&priv->statistics.lock);
  92
  93         /* store temperature from correct statistics (in Celsius) */
  94         priv->temperature = le32_to_cpu(priv->statistics.common.temperature);
  95         iwl_tt_handler(priv);
  96 }
  97
  98 int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
  99 {
 100         int idx = 0;
 101         int band_offset = 0;
 102
 103         /* HT rate format: mac80211 wants an MCS number, which is just LSB */
 104         if (rate_n_flags & RATE_MCS_HT_MSK) {
 105                 idx = (rate_n_flags & 0xff);
 106                 return idx;
 107         /* Legacy rate format, search for match in table */
 108         } else {
 109                 if (band == IEEE80211_BAND_5GHZ)
 110                         band_offset = IWL_FIRST_OFDM_RATE;
 111                 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
 112                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 113                                 return idx - band_offset;
 114         }
 115
 116         return -1;
 117 }
 118
 119 int iwlagn_manage_ibss_station(struct iwl_priv *priv,
 120                                struct ieee80211_vif *vif, bool add)
 121 {
 122         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
 123
 124         if (add)
 125                 return iwlagn_add_bssid_station(priv, vif_priv->ctx,
 126                                                 vif->bss_conf.bssid,
 127                                                 &vif_priv->ibss_bssid_sta_id);
 128         return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
 129                                   vif->bss_conf.bssid);
 130 }
 131
 132 /**
 133  * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode
 134  *
 135  * pre-requirements:
 136  *  1. acquire mutex before calling
 137  *  2. make sure rf is on and not in exit state
 138  */
 139 int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
 140 {
 141         struct iwl_txfifo_flush_cmd flush_cmd;
 142         struct iwl_host_cmd cmd = {
 143                 .id = REPLY_TXFIFO_FLUSH,
 144                 .len = { sizeof(struct iwl_txfifo_flush_cmd), },
 145                 .flags = CMD_SYNC,
 146                 .data = { &flush_cmd, },
 147         };
 148
 149         might_sleep();
 150
 151         memset(&flush_cmd, 0, sizeof(flush_cmd));
 152         if (flush_control & BIT(IWL_RXON_CTX_BSS))
 153                 flush_cmd.fifo_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
 154                                  IWL_SCD_BE_MSK | IWL_SCD_BK_MSK |
 155                                  IWL_SCD_MGMT_MSK;
 156         if ((flush_control & BIT(IWL_RXON_CTX_PAN)) &&
 157             (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
 158                 flush_cmd.fifo_control |= IWL_PAN_SCD_VO_MSK |
 159                                 IWL_PAN_SCD_VI_MSK | IWL_PAN_SCD_BE_MSK |
 160                                 IWL_PAN_SCD_BK_MSK | IWL_PAN_SCD_MGMT_MSK |
 161                                 IWL_PAN_SCD_MULTICAST_MSK;
 162
 163         if (priv->eeprom_data->sku & EEPROM_SKU_CAP_11N_ENABLE)
 164                 flush_cmd.fifo_control |= IWL_AGG_TX_QUEUE_MSK;
 165
 166         IWL_DEBUG_INFO(priv, "fifo queue control: 0X%x\n",
 167                        flush_cmd.fifo_control);
 168         flush_cmd.flush_control = cpu_to_le16(flush_control);
 169
 170         return iwl_dvm_send_cmd(priv, &cmd);
 171 }
 172
 173 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
 174 {
 175         mutex_lock(&priv->mutex);
 176         ieee80211_stop_queues(priv->hw);
 177         if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
 178                 IWL_ERR(priv, "flush request fail\n");
 179                 goto done;
 180         }
 181         IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
 182         iwl_trans_wait_tx_queue_empty(priv->trans);
 183 done:
 184         ieee80211_wake_queues(priv->hw);
 185         mutex_unlock(&priv->mutex);
 186 }
 187
 188 /*
 189  * BT coex
 190  */
 191 /* Notmal TDM */
 192 static const __le32 iwlagn_def_3w_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 193         cpu_to_le32(0xaaaaaaaa),
 194         cpu_to_le32(0xaaaaaaaa),
 195         cpu_to_le32(0xaeaaaaaa),
 196         cpu_to_le32(0xaaaaaaaa),
 197         cpu_to_le32(0xcc00ff28),
 198         cpu_to_le32(0x0000aaaa),
 199         cpu_to_le32(0xcc00aaaa),
 200         cpu_to_le32(0x0000aaaa),
 201         cpu_to_le32(0xc0004000),
 202         cpu_to_le32(0x00004000),
 203         cpu_to_le32(0xf0005000),
 204         cpu_to_le32(0xf0005000),
 205 };
 206
 207
 208 /* Loose Coex */
 209 static const __le32 iwlagn_loose_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 210         cpu_to_le32(0xaaaaaaaa),
 211         cpu_to_le32(0xaaaaaaaa),
 212         cpu_to_le32(0xaeaaaaaa),
 213         cpu_to_le32(0xaaaaaaaa),
 214         cpu_to_le32(0xcc00ff28),
 215         cpu_to_le32(0x0000aaaa),
 216         cpu_to_le32(0xcc00aaaa),
 217         cpu_to_le32(0x0000aaaa),
 218         cpu_to_le32(0x00000000),
 219         cpu_to_le32(0x00000000),
 220         cpu_to_le32(0xf0005000),
 221         cpu_to_le32(0xf0005000),
 222 };
 223
 224 /* Full concurrency */
 225 static const __le32 iwlagn_concurrent_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 226         cpu_to_le32(0xaaaaaaaa),
 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(0x00000000),
 235         cpu_to_le32(0x00000000),
 236         cpu_to_le32(0x00000000),
 237         cpu_to_le32(0x00000000),
 238 };
 239
 240 void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
 241 {
 242         struct iwl_basic_bt_cmd basic = {
 243                 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
 244                 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
 245                 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
 246                 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
 247         };
 248         struct iwl_bt_cmd_v1 bt_cmd_v1;
 249         struct iwl_bt_cmd_v2 bt_cmd_v2;
 250         int ret;
 251
 252         BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
 253                         sizeof(basic.bt3_lookup_table));
 254
 255         if (priv->cfg->bt_params) {
 256                 /*
 257                  * newer generation of devices (2000 series and newer)
 258                  * use the version 2 of the bt command
 259                  * we need to make sure sending the host command
 260                  * with correct data structure to avoid uCode assert
 261                  */
 262                 if (priv->cfg->bt_params->bt_session_2) {
 263                         bt_cmd_v2.prio_boost = cpu_to_le32(
 264                                 priv->cfg->bt_params->bt_prio_boost);
 265                         bt_cmd_v2.tx_prio_boost = 0;
 266                         bt_cmd_v2.rx_prio_boost = 0;
 267                 } else {
 268                         /* older version only has 8 bits */
 269                         WARN_ON(priv->cfg->bt_params->bt_prio_boost & ~0xFF);
 270                         bt_cmd_v1.prio_boost =
 271                                 priv->cfg->bt_params->bt_prio_boost;
 272                         bt_cmd_v1.tx_prio_boost = 0;
 273                         bt_cmd_v1.rx_prio_boost = 0;
 274                 }
 275         } else {
 276                 IWL_ERR(priv, "failed to construct BT Coex Config\n");
 277                 return;
 278         }
 279
 280         /*
 281          * Possible situations when BT needs to take over for receive,
 282          * at the same time where STA needs to response to AP's frame(s),
 283          * reduce the tx power of the required response frames, by that,
 284          * allow the concurrent BT receive & WiFi transmit
 285          * (BT - ANT A, WiFi -ANT B), without interference to one another
 286          *
 287          * Reduced tx power apply to control frames only (ACK/Back/CTS)
 288          * when indicated by the BT config command
 289          */
 290         basic.kill_ack_mask = priv->kill_ack_mask;
 291         basic.kill_cts_mask = priv->kill_cts_mask;
 292         if (priv->reduced_txpower)
 293                 basic.reduce_txpower = IWLAGN_BT_REDUCED_TX_PWR;
 294         basic.valid = priv->bt_valid;
 295
 296         /*
 297          * Configure BT coex mode to "no coexistence" when the
 298          * user disabled BT coexistence, we have no interface
 299          * (might be in monitor mode), or the interface is in
 300          * IBSS mode (no proper uCode support for coex then).
 301          */
 302         if (!iwlwifi_mod_params.bt_coex_active ||
 303             priv->iw_mode == NL80211_IFTYPE_ADHOC) {
 304                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
 305         } else {
 306                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
 307                                         IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
 308
 309                 if (!priv->bt_enable_pspoll)
 310                         basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 311                 else
 312                         basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 313
 314                 if (priv->bt_ch_announce)
 315                         basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
 316                 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
 317         }
 318         priv->bt_enable_flag = basic.flags;
 319         if (priv->bt_full_concurrent)
 320                 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
 321                         sizeof(iwlagn_concurrent_lookup));
 322         else
 323                 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
 324                         sizeof(iwlagn_def_3w_lookup));
 325
 326         IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
 327                        basic.flags ? "active" : "disabled",
 328                        priv->bt_full_concurrent ?
 329                        "full concurrency" : "3-wire");
 330
 331         if (priv->cfg->bt_params->bt_session_2) {
 332                 memcpy(&bt_cmd_v2.basic, &basic,
 333                         sizeof(basic));
 334                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 335                         CMD_SYNC, sizeof(bt_cmd_v2), &bt_cmd_v2);
 336         } else {
 337                 memcpy(&bt_cmd_v1.basic, &basic,
 338                         sizeof(basic));
 339                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 340                         CMD_SYNC, sizeof(bt_cmd_v1), &bt_cmd_v1);
 341         }
 342         if (ret)
 343                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 344
 345 }
 346
 347 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
 348 {
 349         struct iwl_rxon_context *ctx, *found_ctx = NULL;
 350         bool found_ap = false;
 351
 352         lockdep_assert_held(&priv->mutex);
 353
 354         /* Check whether AP or GO mode is active. */
 355         if (rssi_ena) {
 356                 for_each_context(priv, ctx) {
 357                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
 358                             iwl_is_associated_ctx(ctx)) {
 359                                 found_ap = true;
 360                                 break;
 361                         }
 362                 }
 363         }
 364
 365         /*
 366          * If disable was received or If GO/AP mode, disable RSSI
 367          * measurements.
 368          */
 369         if (!rssi_ena || found_ap) {
 370                 if (priv->cur_rssi_ctx) {
 371                         ctx = priv->cur_rssi_ctx;
 372                         ieee80211_disable_rssi_reports(ctx->vif);
 373                         priv->cur_rssi_ctx = NULL;
 374                 }
 375                 return;
 376         }
 377
 378         /*
 379          * If rssi measurements need to be enabled, consider all cases now.
 380          * Figure out how many contexts are active.
 381          */
 382         for_each_context(priv, ctx) {
 383                 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
 384                     iwl_is_associated_ctx(ctx)) {
 385                         found_ctx = ctx;
 386                         break;
 387                 }
 388         }
 389
 390         /*
 391          * rssi monitor already enabled for the correct interface...nothing
 392          * to do.
 393          */
 394         if (found_ctx == priv->cur_rssi_ctx)
 395                 return;
 396
 397         /*
 398          * Figure out if rssi monitor is currently enabled, and needs
 399          * to be changed. If rssi monitor is already enabled, disable
 400          * it first else just enable rssi measurements on the
 401          * interface found above.
 402          */
 403         if (priv->cur_rssi_ctx) {
 404                 ctx = priv->cur_rssi_ctx;
 405                 if (ctx->vif)
 406                         ieee80211_disable_rssi_reports(ctx->vif);
 407         }
 408
 409         priv->cur_rssi_ctx = found_ctx;
 410
 411         if (!found_ctx)
 412                 return;
 413
 414         ieee80211_enable_rssi_reports(found_ctx->vif,
 415                         IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
 416                         IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
 417 }
 418
 419 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
 420 {
 421         return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >>
 422                         BT_UART_MSG_FRAME3SCOESCO_POS;
 423 }
 424
 425 static void iwlagn_bt_traffic_change_work(struct work_struct *work)
 426 {
 427         struct iwl_priv *priv =
 428                 container_of(work, struct iwl_priv, bt_traffic_change_work);
 429         struct iwl_rxon_context *ctx;
 430         int smps_request = -1;
 431
 432         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 433                 /* bt coex disabled */
 434                 return;
 435         }
 436
 437         /*
 438          * Note: bt_traffic_load can be overridden by scan complete and
 439          * coex profile notifications. Ignore that since only bad consequence
 440          * can be not matching debug print with actual state.
 441          */
 442         IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
 443                        priv->bt_traffic_load);
 444
 445         switch (priv->bt_traffic_load) {
 446         case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
 447                 if (priv->bt_status)
 448                         smps_request = IEEE80211_SMPS_DYNAMIC;
 449                 else
 450                         smps_request = IEEE80211_SMPS_AUTOMATIC;
 451                 break;
 452         case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
 453                 smps_request = IEEE80211_SMPS_DYNAMIC;
 454                 break;
 455         case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
 456         case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
 457                 smps_request = IEEE80211_SMPS_STATIC;
 458                 break;
 459         default:
 460                 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
 461                         priv->bt_traffic_load);
 462                 break;
 463         }
 464
 465         mutex_lock(&priv->mutex);
 466
 467         /*
 468          * We can not send command to firmware while scanning. When the scan
 469          * complete we will schedule this work again. We do check with mutex
 470          * locked to prevent new scan request to arrive. We do not check
 471          * STATUS_SCANNING to avoid race when queue_work two times from
 472          * different notifications, but quit and not perform any work at all.
 473          */
 474         if (test_bit(STATUS_SCAN_HW, &priv->status))
 475                 goto out;
 476
 477         iwl_update_chain_flags(priv);
 478
 479         if (smps_request != -1) {
 480                 priv->current_ht_config.smps = smps_request;
 481                 for_each_context(priv, ctx) {
 482                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
 483                                 ieee80211_request_smps(ctx->vif, smps_request);
 484                 }
 485         }
 486
 487         /*
 488          * Dynamic PS poll related functionality. Adjust RSSI measurements if
 489          * necessary.
 490          */
 491         iwlagn_bt_coex_rssi_monitor(priv);
 492 out:
 493         mutex_unlock(&priv->mutex);
 494 }
 495
 496 /*
 497  * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
 498  * correct interface or disable it if this is the last interface to be
 499  * removed.
 500  */
 501 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
 502 {
 503         if (priv->bt_is_sco &&
 504             priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
 505                 iwlagn_bt_adjust_rssi_monitor(priv, true);
 506         else
 507                 iwlagn_bt_adjust_rssi_monitor(priv, false);
 508 }
 509
 510 static void iwlagn_print_uartmsg(struct iwl_priv *priv,
 511                                 struct iwl_bt_uart_msg *uart_msg)
 512 {
 513         IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
 514                         "Update Req = 0x%X\n",
 515                 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
 516                         BT_UART_MSG_FRAME1MSGTYPE_POS,
 517                 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
 518                         BT_UART_MSG_FRAME1SSN_POS,
 519                 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
 520                         BT_UART_MSG_FRAME1UPDATEREQ_POS);
 521
 522         IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
 523                         "Chl_SeqN = 0x%X, In band = 0x%X\n",
 524                 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
 525                         BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
 526                 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
 527                         BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
 528                 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
 529                         BT_UART_MSG_FRAME2CHLSEQN_POS,
 530                 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
 531                         BT_UART_MSG_FRAME2INBAND_POS);
 532
 533         IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
 534                         "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X\n",
 535                 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 536                         BT_UART_MSG_FRAME3SCOESCO_POS,
 537                 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
 538                         BT_UART_MSG_FRAME3SNIFF_POS,
 539                 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
 540                         BT_UART_MSG_FRAME3A2DP_POS,
 541                 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
 542                         BT_UART_MSG_FRAME3ACL_POS,
 543                 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
 544                         BT_UART_MSG_FRAME3MASTER_POS,
 545                 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
 546                         BT_UART_MSG_FRAME3OBEX_POS);
 547
 548         IWL_DEBUG_COEX(priv, "Idle duration = 0x%X\n",
 549                 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
 550                         BT_UART_MSG_FRAME4IDLEDURATION_POS);
 551
 552         IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
 553                         "eSCO Retransmissions = 0x%X\n",
 554                 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
 555                         BT_UART_MSG_FRAME5TXACTIVITY_POS,
 556                 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
 557                         BT_UART_MSG_FRAME5RXACTIVITY_POS,
 558                 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
 559                         BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
 560
 561         IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X\n",
 562                 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
 563                         BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
 564                 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
 565                         BT_UART_MSG_FRAME6DISCOVERABLE_POS);
 566
 567         IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
 568                         "0x%X, Inquiry = 0x%X, Connectable = 0x%X\n",
 569                 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
 570                         BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
 571                 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
 572                         BT_UART_MSG_FRAME7PAGE_POS,
 573                 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
 574                         BT_UART_MSG_FRAME7INQUIRY_POS,
 575                 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
 576                         BT_UART_MSG_FRAME7CONNECTABLE_POS);
 577 }
 578
 579 static bool iwlagn_set_kill_msk(struct iwl_priv *priv,
 580                                 struct iwl_bt_uart_msg *uart_msg)
 581 {
 582         bool need_update = false;
 583         u8 kill_msk = IWL_BT_KILL_REDUCE;
 584         static const __le32 bt_kill_ack_msg[3] = {
 585                 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
 586                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 587                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 588         static const __le32 bt_kill_cts_msg[3] = {
 589                 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
 590                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 591                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 592
 593         if (!priv->reduced_txpower)
 594                 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
 595                         ? IWL_BT_KILL_OVERRIDE : IWL_BT_KILL_DEFAULT;
 596         if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
 597             priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
 598                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
 599                 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
 600                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
 601                 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
 602                 need_update = true;
 603         }
 604         return need_update;
 605 }
 606
 607 /*
 608  * Upon RSSI changes, sends a bt config command with following changes
 609  *  1. enable/disable "reduced control frames tx power
 610  *  2. update the "kill)ack_mask" and "kill_cts_mask"
 611  *
 612  * If "reduced tx power" is enabled, uCode shall
 613  *  1. ACK/Back/CTS rate shall reduced to 6Mbps
 614  *  2. not use duplciate 20/40MHz mode
 615  */
 616 static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv,
 617                                 struct iwl_bt_uart_msg *uart_msg)
 618 {
 619         bool need_update = false;
 620         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 621         int ave_rssi;
 622
 623         if (!ctx->vif || (ctx->vif->type != NL80211_IFTYPE_STATION)) {
 624                 IWL_DEBUG_INFO(priv, "BSS ctx not active or not in sta mode\n");
 625                 return false;
 626         }
 627
 628         ave_rssi = ieee80211_ave_rssi(ctx->vif);
 629         if (!ave_rssi) {
 630                 /* no rssi data, no changes to reduce tx power */
 631                 IWL_DEBUG_COEX(priv, "no rssi data available\n");
 632                 return need_update;
 633         }
 634         if (!priv->reduced_txpower &&
 635             !iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
 636             (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) &&
 637             (uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 638             BT_UART_MSG_FRAME3OBEX_MSK)) &&
 639             !(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 640             BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK))) {
 641                 /* enabling reduced tx power */
 642                 priv->reduced_txpower = true;
 643                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 644                 need_update = true;
 645         } else if (priv->reduced_txpower &&
 646                    (iwl_is_associated(priv, IWL_RXON_CTX_PAN) ||
 647                    (ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) ||
 648                    (uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 649                    BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK)) ||
 650                    !(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 651                    BT_UART_MSG_FRAME3OBEX_MSK)))) {
 652                 /* disable reduced tx power */
 653                 priv->reduced_txpower = false;
 654                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 655                 need_update = true;
 656         }
 657
 658         return need_update;
 659 }
 660
 661 int iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
 662                                   struct iwl_rx_cmd_buffer *rxb,
 663                                   struct iwl_device_cmd *cmd)
 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 0;
 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         return 0;
 717 }
 718
 719 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
 720 {
 721         priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
 722                 iwlagn_bt_coex_profile_notif;
 723 }
 724
 725 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
 726 {
 727         INIT_WORK(&priv->bt_traffic_change_work,
 728                   iwlagn_bt_traffic_change_work);
 729 }
 730
 731 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
 732 {
 733         cancel_work_sync(&priv->bt_traffic_change_work);
 734 }
 735
 736 static bool is_single_rx_stream(struct iwl_priv *priv)
 737 {
 738         return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
 739                priv->current_ht_config.single_chain_sufficient;
 740 }
 741
 742 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 743 #define IWL_NUM_RX_CHAINS_SINGLE        2
 744 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 745 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 746
 747 /*
 748  * Determine how many receiver/antenna chains to use.
 749  *
 750  * More provides better reception via diversity.  Fewer saves power
 751  * at the expense of throughput, but only when not in powersave to
 752  * start with.
 753  *
 754  * MIMO (dual stream) requires at least 2, but works better with 3.
 755  * This does not determine *which* chains to use, just how many.
 756  */
 757 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 758 {
 759         if (priv->cfg->bt_params &&
 760             priv->cfg->bt_params->advanced_bt_coexist &&
 761             (priv->bt_full_concurrent ||
 762              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 763                 /*
 764                  * only use chain 'A' in bt high traffic load or
 765                  * full concurrency mode
 766                  */
 767                 return IWL_NUM_RX_CHAINS_SINGLE;
 768         }
 769         /* # of Rx chains to use when expecting MIMO. */
 770         if (is_single_rx_stream(priv))
 771                 return IWL_NUM_RX_CHAINS_SINGLE;
 772         else
 773                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 774 }
 775
 776 /*
 777  * When we are in power saving mode, unless device support spatial
 778  * multiplexing power save, use the active count for rx chain count.
 779  */
 780 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 781 {
 782         /* # Rx chains when idling, depending on SMPS mode */
 783         switch (priv->current_ht_config.smps) {
 784         case IEEE80211_SMPS_STATIC:
 785         case IEEE80211_SMPS_DYNAMIC:
 786                 return IWL_NUM_IDLE_CHAINS_SINGLE;
 787         case IEEE80211_SMPS_AUTOMATIC:
 788         case IEEE80211_SMPS_OFF:
 789                 return active_cnt;
 790         default:
 791                 WARN(1, "invalid SMPS mode %d",
 792                      priv->current_ht_config.smps);
 793                 return active_cnt;
 794         }
 795 }
 796
 797 /* up to 4 chains */
 798 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
 799 {
 800         u8 res;
 801         res = (chain_bitmap & BIT(0)) >> 0;
 802         res += (chain_bitmap & BIT(1)) >> 1;
 803         res += (chain_bitmap & BIT(2)) >> 2;
 804         res += (chain_bitmap & BIT(3)) >> 3;
 805         return res;
 806 }
 807
 808 /**
 809  * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
 810  *
 811  * Selects how many and which Rx receivers/antennas/chains to use.
 812  * This should not be used for scan command ... it puts data in wrong place.
 813  */
 814 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 815 {
 816         bool is_single = is_single_rx_stream(priv);
 817         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 818         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
 819         u32 active_chains;
 820         u16 rx_chain;
 821
 822         /* Tell uCode which antennas are actually connected.
 823          * Before first association, we assume all antennas are connected.
 824          * Just after first association, iwl_chain_noise_calibration()
 825          *    checks which antennas actually *are* connected. */
 826         if (priv->chain_noise_data.active_chains)
 827                 active_chains = priv->chain_noise_data.active_chains;
 828         else
 829                 active_chains = priv->eeprom_data->valid_rx_ant;
 830
 831         if (priv->cfg->bt_params &&
 832             priv->cfg->bt_params->advanced_bt_coexist &&
 833             (priv->bt_full_concurrent ||
 834              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 835                 /*
 836                  * only use chain 'A' in bt high traffic load or
 837                  * full concurrency mode
 838                  */
 839                 active_chains = first_antenna(active_chains);
 840         }
 841
 842         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
 843
 844         /* How many receivers should we use? */
 845         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
 846         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
 847
 848
 849         /* correct rx chain count according hw settings
 850          * and chain noise calibration
 851          */
 852         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
 853         if (valid_rx_cnt < active_rx_cnt)
 854                 active_rx_cnt = valid_rx_cnt;
 855
 856         if (valid_rx_cnt < idle_rx_cnt)
 857                 idle_rx_cnt = valid_rx_cnt;
 858
 859         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
 860         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
 861
 862         ctx->staging.rx_chain = cpu_to_le16(rx_chain);
 863
 864         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
 865                 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
 866         else
 867                 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
 868
 869         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
 870                         ctx->staging.rx_chain,
 871                         active_rx_cnt, idle_rx_cnt);
 872
 873         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
 874                 active_rx_cnt < idle_rx_cnt);
 875 }
 876
 877 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
 878 {
 879         int i;
 880         u8 ind = ant;
 881
 882         if (priv->band == IEEE80211_BAND_2GHZ &&
 883             priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
 884                 return 0;
 885
 886         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 887                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 888                 if (valid & BIT(ind))
 889                         return ind;
 890         }
 891         return ant;
 892 }
 893
 894 #ifdef CONFIG_PM_SLEEP
 895 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
 896 {
 897         int i;
 898
 899         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
 900                 out[i] = cpu_to_le16(p1k[i]);
 901 }
 902
 903 struct wowlan_key_data {
 904         struct iwl_rxon_context *ctx;
 905         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
 906         struct iwlagn_wowlan_tkip_params_cmd *tkip;
 907         const u8 *bssid;
 908         bool error, use_rsc_tsc, use_tkip;
 909 };
 910
 911
 912 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
 913                                struct ieee80211_vif *vif,
 914                                struct ieee80211_sta *sta,
 915                                struct ieee80211_key_conf *key,
 916                                void *_data)
 917 {
 918         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 919         struct wowlan_key_data *data = _data;
 920         struct iwl_rxon_context *ctx = data->ctx;
 921         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
 922         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 923         struct iwlagn_p1k_cache *rx_p1ks;
 924         u8 *rx_mic_key;
 925         struct ieee80211_key_seq seq;
 926         u32 cur_rx_iv32 = 0;
 927         u16 p1k[IWLAGN_P1K_SIZE];
 928         int ret, i;
 929
 930         mutex_lock(&priv->mutex);
 931
 932         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 933              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 934              !sta && !ctx->key_mapping_keys)
 935                 ret = iwl_set_default_wep_key(priv, ctx, key);
 936         else
 937                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
 938
 939         if (ret) {
 940                 IWL_ERR(priv, "Error setting key during suspend!\n");
 941                 data->error = true;
 942         }
 943
 944         switch (key->cipher) {
 945         case WLAN_CIPHER_SUITE_TKIP:
 946                 if (sta) {
 947                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
 948                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
 949
 950                         rx_p1ks = data->tkip->rx_uni;
 951
 952                         ieee80211_get_key_tx_seq(key, &seq);
 953                         tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
 954                         tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
 955
 956                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
 957                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
 958
 959                         memcpy(data->tkip->mic_keys.tx,
 960                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
 961                                IWLAGN_MIC_KEY_SIZE);
 962
 963                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
 964                 } else {
 965                         tkip_sc =
 966                                 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
 967                         rx_p1ks = data->tkip->rx_multi;
 968                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
 969                 }
 970
 971                 /*
 972                  * For non-QoS this relies on the fact that both the uCode and
 973                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 974                  * for checking the IV in the frames.
 975                  */
 976                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
 977                         ieee80211_get_key_rx_seq(key, i, &seq);
 978                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
 979                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
 980                         /* wrapping isn't allowed, AP must rekey */
 981                         if (seq.tkip.iv32 > cur_rx_iv32)
 982                                 cur_rx_iv32 = seq.tkip.iv32;
 983                 }
 984
 985                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
 986                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
 987                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
 988                                           cur_rx_iv32 + 1, p1k);
 989                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
 990
 991                 memcpy(rx_mic_key,
 992                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
 993                        IWLAGN_MIC_KEY_SIZE);
 994
 995                 data->use_tkip = true;
 996                 data->use_rsc_tsc = true;
 997                 break;
 998         case WLAN_CIPHER_SUITE_CCMP:
 999                 if (sta) {
1000                         u8 *pn = seq.ccmp.pn;
1001
1002                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
1003                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
1004
1005                         ieee80211_get_key_tx_seq(key, &seq);
1006                         aes_tx_sc->pn = cpu_to_le64(
1007                                         (u64)pn[5] |
1008                                         ((u64)pn[4] << 8) |
1009                                         ((u64)pn[3] << 16) |
1010                                         ((u64)pn[2] << 24) |
1011                                         ((u64)pn[1] << 32) |
1012                                         ((u64)pn[0] << 40));
1013                 } else
1014                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
1015
1016                 /*
1017                  * For non-QoS this relies on the fact that both the uCode and
1018                  * mac80211 use TID 0 for checking the IV in the frames.
1019                  */
1020                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1021                         u8 *pn = seq.ccmp.pn;
1022
1023                         ieee80211_get_key_rx_seq(key, i, &seq);
1024                         aes_sc->pn = cpu_to_le64(
1025                                         (u64)pn[5] |
1026                                         ((u64)pn[4] << 8) |
1027                                         ((u64)pn[3] << 16) |
1028                                         ((u64)pn[2] << 24) |
1029                                         ((u64)pn[1] << 32) |
1030                                         ((u64)pn[0] << 40));
1031                 }
1032                 data->use_rsc_tsc = true;
1033                 break;
1034         }
1035
1036         mutex_unlock(&priv->mutex);
1037 }
1038
1039 int iwlagn_send_patterns(struct iwl_priv *priv,
1040                         struct cfg80211_wowlan *wowlan)
1041 {
1042         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1043         struct iwl_host_cmd cmd = {
1044                 .id = REPLY_WOWLAN_PATTERNS,
1045                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1046                 .flags = CMD_SYNC,
1047         };
1048         int i, err;
1049
1050         if (!wowlan->n_patterns)
1051                 return 0;
1052
1053         cmd.len[0] = sizeof(*pattern_cmd) +
1054                 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1055
1056         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1057         if (!pattern_cmd)
1058                 return -ENOMEM;
1059
1060         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1061
1062         for (i = 0; i < wowlan->n_patterns; i++) {
1063                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1064
1065                 memcpy(&pattern_cmd->patterns[i].mask,
1066                         wowlan->patterns[i].mask, mask_len);
1067                 memcpy(&pattern_cmd->patterns[i].pattern,
1068                         wowlan->patterns[i].pattern,
1069                         wowlan->patterns[i].pattern_len);
1070                 pattern_cmd->patterns[i].mask_size = mask_len;
1071                 pattern_cmd->patterns[i].pattern_size =
1072                         wowlan->patterns[i].pattern_len;
1073         }
1074
1075         cmd.data[0] = pattern_cmd;
1076         err = iwl_dvm_send_cmd(priv, &cmd);
1077         kfree(pattern_cmd);
1078         return err;
1079 }
1080
1081 int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan)
1082 {
1083         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
1084         struct iwl_rxon_cmd rxon;
1085         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1086         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
1087         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
1088         struct iwlagn_d3_config_cmd d3_cfg_cmd = {};
1089         struct wowlan_key_data key_data = {
1090                 .ctx = ctx,
1091                 .bssid = ctx->active.bssid_addr,
1092                 .use_rsc_tsc = false,
1093                 .tkip = &tkip_cmd,
1094                 .use_tkip = false,
1095         };
1096         int ret, i;
1097         u16 seq;
1098
1099         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1100         if (!key_data.rsc_tsc)
1101                 return -ENOMEM;
1102
1103         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1104
1105         /*
1106          * We know the last used seqno, and the uCode expects to know that
1107          * one, it will increment before TX.
1108          */
1109         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1110         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1111
1112         /*
1113          * For QoS counters, we store the one to use next, so subtract 0x10
1114          * since the uCode will add 0x10 before using the value.
1115          */
1116         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1117                 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1118                 seq -= 0x10;
1119                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1120         }
1121
1122         if (wowlan->disconnect)
1123                 wakeup_filter_cmd.enabled |=
1124                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1125                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1126         if (wowlan->magic_pkt)
1127                 wakeup_filter_cmd.enabled |=
1128                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1129         if (wowlan->gtk_rekey_failure)
1130                 wakeup_filter_cmd.enabled |=
1131                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1132         if (wowlan->eap_identity_req)
1133                 wakeup_filter_cmd.enabled |=
1134                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1135         if (wowlan->four_way_handshake)
1136                 wakeup_filter_cmd.enabled |=
1137                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1138         if (wowlan->n_patterns)
1139                 wakeup_filter_cmd.enabled |=
1140                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1141
1142         if (wowlan->rfkill_release)
1143                 d3_cfg_cmd.wakeup_flags |=
1144                         cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1145
1146         iwl_scan_cancel_timeout(priv, 200);
1147
1148         memcpy(&rxon, &ctx->active, sizeof(rxon));
1149
1150         priv->ucode_loaded = false;
1151         iwl_trans_stop_device(priv->trans);
1152
1153         priv->wowlan = true;
1154
1155         ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
1156         if (ret)
1157                 goto out;
1158
1159         /* now configure WoWLAN ucode */
1160         ret = iwl_alive_start(priv);
1161         if (ret)
1162                 goto out;
1163
1164         memcpy(&ctx->staging, &rxon, sizeof(rxon));
1165         ret = iwlagn_commit_rxon(priv, ctx);
1166         if (ret)
1167                 goto out;
1168
1169         ret = iwl_power_update_mode(priv, true);
1170         if (ret)
1171                 goto out;
1172
1173         if (!iwlwifi_mod_params.sw_crypto) {
1174                 /* mark all keys clear */
1175                 priv->ucode_key_table = 0;
1176                 ctx->key_mapping_keys = 0;
1177
1178                 /*
1179                  * This needs to be unlocked due to lock ordering
1180                  * constraints. Since we're in the suspend path
1181                  * that isn't really a problem though.
1182                  */
1183                 mutex_unlock(&priv->mutex);
1184                 ieee80211_iter_keys(priv->hw, ctx->vif,
1185                                     iwlagn_wowlan_program_keys,
1186                                     &key_data);
1187                 mutex_lock(&priv->mutex);
1188                 if (key_data.error) {
1189                         ret = -EIO;
1190                         goto out;
1191                 }
1192
1193                 if (key_data.use_rsc_tsc) {
1194                         struct iwl_host_cmd rsc_tsc_cmd = {
1195                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1196                                 .flags = CMD_SYNC,
1197                                 .data[0] = key_data.rsc_tsc,
1198                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1199                                 .len[0] = sizeof(*key_data.rsc_tsc),
1200                         };
1201
1202                         ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd);
1203                         if (ret)
1204                                 goto out;
1205                 }
1206
1207                 if (key_data.use_tkip) {
1208                         ret = iwl_dvm_send_cmd_pdu(priv,
1209                                                  REPLY_WOWLAN_TKIP_PARAMS,
1210                                                  CMD_SYNC, sizeof(tkip_cmd),
1211                                                  &tkip_cmd);
1212                         if (ret)
1213                                 goto out;
1214                 }
1215
1216                 if (priv->have_rekey_data) {
1217                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1218                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1219                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1220                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1221                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1222                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
1223
1224                         ret = iwl_dvm_send_cmd_pdu(priv,
1225                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
1226                                                  CMD_SYNC, sizeof(kek_kck_cmd),
1227                                                  &kek_kck_cmd);
1228                         if (ret)
1229                                 goto out;
1230                 }
1231         }
1232
1233         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, CMD_SYNC,
1234                                      sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1235         if (ret)
1236                 goto out;
1237
1238         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER,
1239                                  CMD_SYNC, sizeof(wakeup_filter_cmd),
1240                                  &wakeup_filter_cmd);
1241         if (ret)
1242                 goto out;
1243
1244         ret = iwlagn_send_patterns(priv, wowlan);
1245  out:
1246         kfree(key_data.rsc_tsc);
1247         return ret;
1248 }
1249 #endif
1250
1251 int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
1252 {
1253         if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
1254                 IWL_WARN(priv, "Not sending command - %s KILL\n",
1255                          iwl_is_rfkill(priv) ? "RF" : "CT");
1256                 return -EIO;
1257         }
1258
1259         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
1260                 IWL_ERR(priv, "Command %s failed: FW Error\n",
1261                         iwl_dvm_get_cmd_string(cmd->id));
1262                 return -EIO;
1263         }
1264
1265         /*
1266          * Synchronous commands from this op-mode must hold
1267          * the mutex, this ensures we don't try to send two
1268          * (or more) synchronous commands at a time.
1269          */
1270         if (!(cmd->flags & CMD_ASYNC))
1271                 lockdep_assert_held(&priv->mutex);
1272
1273         if (priv->ucode_owner == IWL_OWNERSHIP_TM &&
1274             !(cmd->flags & CMD_ON_DEMAND)) {
1275                 IWL_DEBUG_HC(priv, "tm own the uCode, no regular hcmd send\n");
1276                 return -EIO;
1277         }
1278
1279         return iwl_trans_send_cmd(priv->trans, cmd);
1280 }
1281
1282 int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id,
1283                          u32 flags, u16 len, const void *data)
1284 {
1285         struct iwl_host_cmd cmd = {
1286                 .id = id,
1287                 .len = { len, },
1288                 .data = { data, },
1289                 .flags = flags,
1290         };
1291
1292         return iwl_dvm_send_cmd(priv, &cmd);
1293 }