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

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 - 2013 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->nvm_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->nvm_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)
 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         memset(&flush_cmd, 0, sizeof(flush_cmd));
 150
 151         flush_cmd.queue_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
 152                                   IWL_SCD_BE_MSK | IWL_SCD_BK_MSK |
 153                                   IWL_SCD_MGMT_MSK;
 154         if ((priv->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
 155                 flush_cmd.queue_control |= IWL_PAN_SCD_VO_MSK |
 156                                            IWL_PAN_SCD_VI_MSK |
 157                                            IWL_PAN_SCD_BE_MSK |
 158                                            IWL_PAN_SCD_BK_MSK |
 159                                            IWL_PAN_SCD_MGMT_MSK |
 160                                            IWL_PAN_SCD_MULTICAST_MSK;
 161
 162         if (priv->nvm_data->sku_cap_11n_enable)
 163                 flush_cmd.queue_control |= IWL_AGG_TX_QUEUE_MSK;
 164
 165         IWL_DEBUG_INFO(priv, "queue control: 0x%x\n",
 166                        flush_cmd.queue_control);
 167         flush_cmd.flush_control = cpu_to_le16(IWL_DROP_ALL);
 168
 169         return iwl_dvm_send_cmd(priv, &cmd);
 170 }
 171
 172 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv)
 173 {
 174         mutex_lock(&priv->mutex);
 175         ieee80211_stop_queues(priv->hw);
 176         if (iwlagn_txfifo_flush(priv)) {
 177                 IWL_ERR(priv, "flush request fail\n");
 178                 goto done;
 179         }
 180         IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
 181         iwl_trans_wait_tx_queue_empty(priv->trans);
 182 done:
 183         ieee80211_wake_queues(priv->hw);
 184         mutex_unlock(&priv->mutex);
 185 }
 186
 187 /*
 188  * BT coex
 189  */
 190 /* Notmal TDM */
 191 static const __le32 iwlagn_def_3w_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 192         cpu_to_le32(0xaaaaaaaa),
 193         cpu_to_le32(0xaaaaaaaa),
 194         cpu_to_le32(0xaeaaaaaa),
 195         cpu_to_le32(0xaaaaaaaa),
 196         cpu_to_le32(0xcc00ff28),
 197         cpu_to_le32(0x0000aaaa),
 198         cpu_to_le32(0xcc00aaaa),
 199         cpu_to_le32(0x0000aaaa),
 200         cpu_to_le32(0xc0004000),
 201         cpu_to_le32(0x00004000),
 202         cpu_to_le32(0xf0005000),
 203         cpu_to_le32(0xf0005000),
 204 };
 205
 206
 207 /* Loose Coex */
 208 static const __le32 iwlagn_loose_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 209         cpu_to_le32(0xaaaaaaaa),
 210         cpu_to_le32(0xaaaaaaaa),
 211         cpu_to_le32(0xaeaaaaaa),
 212         cpu_to_le32(0xaaaaaaaa),
 213         cpu_to_le32(0xcc00ff28),
 214         cpu_to_le32(0x0000aaaa),
 215         cpu_to_le32(0xcc00aaaa),
 216         cpu_to_le32(0x0000aaaa),
 217         cpu_to_le32(0x00000000),
 218         cpu_to_le32(0x00000000),
 219         cpu_to_le32(0xf0005000),
 220         cpu_to_le32(0xf0005000),
 221 };
 222
 223 /* Full concurrency */
 224 static const __le32 iwlagn_concurrent_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 225         cpu_to_le32(0xaaaaaaaa),
 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(0x00000000),
 234         cpu_to_le32(0x00000000),
 235         cpu_to_le32(0x00000000),
 236         cpu_to_le32(0x00000000),
 237 };
 238
 239 void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
 240 {
 241         struct iwl_basic_bt_cmd basic = {
 242                 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
 243                 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
 244                 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
 245                 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
 246         };
 247         struct iwl_bt_cmd_v1 bt_cmd_v1;
 248         struct iwl_bt_cmd_v2 bt_cmd_v2;
 249         int ret;
 250
 251         BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
 252                         sizeof(basic.bt3_lookup_table));
 253
 254         if (priv->cfg->bt_params) {
 255                 /*
 256                  * newer generation of devices (2000 series and newer)
 257                  * use the version 2 of the bt command
 258                  * we need to make sure sending the host command
 259                  * with correct data structure to avoid uCode assert
 260                  */
 261                 if (priv->cfg->bt_params->bt_session_2) {
 262                         bt_cmd_v2.prio_boost = cpu_to_le32(
 263                                 priv->cfg->bt_params->bt_prio_boost);
 264                         bt_cmd_v2.tx_prio_boost = 0;
 265                         bt_cmd_v2.rx_prio_boost = 0;
 266                 } else {
 267                         /* older version only has 8 bits */
 268                         WARN_ON(priv->cfg->bt_params->bt_prio_boost & ~0xFF);
 269                         bt_cmd_v1.prio_boost =
 270                                 priv->cfg->bt_params->bt_prio_boost;
 271                         bt_cmd_v1.tx_prio_boost = 0;
 272                         bt_cmd_v1.rx_prio_boost = 0;
 273                 }
 274         } else {
 275                 IWL_ERR(priv, "failed to construct BT Coex Config\n");
 276                 return;
 277         }
 278
 279         /*
 280          * Possible situations when BT needs to take over for receive,
 281          * at the same time where STA needs to response to AP's frame(s),
 282          * reduce the tx power of the required response frames, by that,
 283          * allow the concurrent BT receive & WiFi transmit
 284          * (BT - ANT A, WiFi -ANT B), without interference to one another
 285          *
 286          * Reduced tx power apply to control frames only (ACK/Back/CTS)
 287          * when indicated by the BT config command
 288          */
 289         basic.kill_ack_mask = priv->kill_ack_mask;
 290         basic.kill_cts_mask = priv->kill_cts_mask;
 291         if (priv->reduced_txpower)
 292                 basic.reduce_txpower = IWLAGN_BT_REDUCED_TX_PWR;
 293         basic.valid = priv->bt_valid;
 294
 295         /*
 296          * Configure BT coex mode to "no coexistence" when the
 297          * user disabled BT coexistence, we have no interface
 298          * (might be in monitor mode), or the interface is in
 299          * IBSS mode (no proper uCode support for coex then).
 300          */
 301         if (!iwlwifi_mod_params.bt_coex_active ||
 302             priv->iw_mode == NL80211_IFTYPE_ADHOC) {
 303                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
 304         } else {
 305                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
 306                                         IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
 307
 308                 if (!priv->bt_enable_pspoll)
 309                         basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 310                 else
 311                         basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 312
 313                 if (priv->bt_ch_announce)
 314                         basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
 315                 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
 316         }
 317         priv->bt_enable_flag = basic.flags;
 318         if (priv->bt_full_concurrent)
 319                 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
 320                         sizeof(iwlagn_concurrent_lookup));
 321         else
 322                 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
 323                         sizeof(iwlagn_def_3w_lookup));
 324
 325         IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
 326                        basic.flags ? "active" : "disabled",
 327                        priv->bt_full_concurrent ?
 328                        "full concurrency" : "3-wire");
 329
 330         if (priv->cfg->bt_params->bt_session_2) {
 331                 memcpy(&bt_cmd_v2.basic, &basic,
 332                         sizeof(basic));
 333                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 334                         CMD_SYNC, sizeof(bt_cmd_v2), &bt_cmd_v2);
 335         } else {
 336                 memcpy(&bt_cmd_v1.basic, &basic,
 337                         sizeof(basic));
 338                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 339                         CMD_SYNC, sizeof(bt_cmd_v1), &bt_cmd_v1);
 340         }
 341         if (ret)
 342                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 343
 344 }
 345
 346 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
 347 {
 348         struct iwl_rxon_context *ctx, *found_ctx = NULL;
 349         bool found_ap = false;
 350
 351         lockdep_assert_held(&priv->mutex);
 352
 353         /* Check whether AP or GO mode is active. */
 354         if (rssi_ena) {
 355                 for_each_context(priv, ctx) {
 356                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
 357                             iwl_is_associated_ctx(ctx)) {
 358                                 found_ap = true;
 359                                 break;
 360                         }
 361                 }
 362         }
 363
 364         /*
 365          * If disable was received or If GO/AP mode, disable RSSI
 366          * measurements.
 367          */
 368         if (!rssi_ena || found_ap) {
 369                 if (priv->cur_rssi_ctx) {
 370                         ctx = priv->cur_rssi_ctx;
 371                         ieee80211_disable_rssi_reports(ctx->vif);
 372                         priv->cur_rssi_ctx = NULL;
 373                 }
 374                 return;
 375         }
 376
 377         /*
 378          * If rssi measurements need to be enabled, consider all cases now.
 379          * Figure out how many contexts are active.
 380          */
 381         for_each_context(priv, ctx) {
 382                 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
 383                     iwl_is_associated_ctx(ctx)) {
 384                         found_ctx = ctx;
 385                         break;
 386                 }
 387         }
 388
 389         /*
 390          * rssi monitor already enabled for the correct interface...nothing
 391          * to do.
 392          */
 393         if (found_ctx == priv->cur_rssi_ctx)
 394                 return;
 395
 396         /*
 397          * Figure out if rssi monitor is currently enabled, and needs
 398          * to be changed. If rssi monitor is already enabled, disable
 399          * it first else just enable rssi measurements on the
 400          * interface found above.
 401          */
 402         if (priv->cur_rssi_ctx) {
 403                 ctx = priv->cur_rssi_ctx;
 404                 if (ctx->vif)
 405                         ieee80211_disable_rssi_reports(ctx->vif);
 406         }
 407
 408         priv->cur_rssi_ctx = found_ctx;
 409
 410         if (!found_ctx)
 411                 return;
 412
 413         ieee80211_enable_rssi_reports(found_ctx->vif,
 414                         IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
 415                         IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
 416 }
 417
 418 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
 419 {
 420         return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >>
 421                         BT_UART_MSG_FRAME3SCOESCO_POS;
 422 }
 423
 424 static void iwlagn_bt_traffic_change_work(struct work_struct *work)
 425 {
 426         struct iwl_priv *priv =
 427                 container_of(work, struct iwl_priv, bt_traffic_change_work);
 428         struct iwl_rxon_context *ctx;
 429         int smps_request = -1;
 430
 431         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 432                 /* bt coex disabled */
 433                 return;
 434         }
 435
 436         /*
 437          * Note: bt_traffic_load can be overridden by scan complete and
 438          * coex profile notifications. Ignore that since only bad consequence
 439          * can be not matching debug print with actual state.
 440          */
 441         IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
 442                        priv->bt_traffic_load);
 443
 444         switch (priv->bt_traffic_load) {
 445         case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
 446                 if (priv->bt_status)
 447                         smps_request = IEEE80211_SMPS_DYNAMIC;
 448                 else
 449                         smps_request = IEEE80211_SMPS_AUTOMATIC;
 450                 break;
 451         case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
 452                 smps_request = IEEE80211_SMPS_DYNAMIC;
 453                 break;
 454         case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
 455         case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
 456                 smps_request = IEEE80211_SMPS_STATIC;
 457                 break;
 458         default:
 459                 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
 460                         priv->bt_traffic_load);
 461                 break;
 462         }
 463
 464         mutex_lock(&priv->mutex);
 465
 466         /*
 467          * We can not send command to firmware while scanning. When the scan
 468          * complete we will schedule this work again. We do check with mutex
 469          * locked to prevent new scan request to arrive. We do not check
 470          * STATUS_SCANNING to avoid race when queue_work two times from
 471          * different notifications, but quit and not perform any work at all.
 472          */
 473         if (test_bit(STATUS_SCAN_HW, &priv->status))
 474                 goto out;
 475
 476         iwl_update_chain_flags(priv);
 477
 478         if (smps_request != -1) {
 479                 priv->current_ht_config.smps = smps_request;
 480                 for_each_context(priv, ctx) {
 481                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
 482                                 ieee80211_request_smps(ctx->vif, smps_request);
 483                 }
 484         }
 485
 486         /*
 487          * Dynamic PS poll related functionality. Adjust RSSI measurements if
 488          * necessary.
 489          */
 490         iwlagn_bt_coex_rssi_monitor(priv);
 491 out:
 492         mutex_unlock(&priv->mutex);
 493 }
 494
 495 /*
 496  * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
 497  * correct interface or disable it if this is the last interface to be
 498  * removed.
 499  */
 500 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
 501 {
 502         if (priv->bt_is_sco &&
 503             priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
 504                 iwlagn_bt_adjust_rssi_monitor(priv, true);
 505         else
 506                 iwlagn_bt_adjust_rssi_monitor(priv, false);
 507 }
 508
 509 static void iwlagn_print_uartmsg(struct iwl_priv *priv,
 510                                 struct iwl_bt_uart_msg *uart_msg)
 511 {
 512         IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
 513                         "Update Req = 0x%X\n",
 514                 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
 515                         BT_UART_MSG_FRAME1MSGTYPE_POS,
 516                 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
 517                         BT_UART_MSG_FRAME1SSN_POS,
 518                 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
 519                         BT_UART_MSG_FRAME1UPDATEREQ_POS);
 520
 521         IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
 522                         "Chl_SeqN = 0x%X, In band = 0x%X\n",
 523                 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
 524                         BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
 525                 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
 526                         BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
 527                 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
 528                         BT_UART_MSG_FRAME2CHLSEQN_POS,
 529                 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
 530                         BT_UART_MSG_FRAME2INBAND_POS);
 531
 532         IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
 533                         "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X\n",
 534                 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 535                         BT_UART_MSG_FRAME3SCOESCO_POS,
 536                 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
 537                         BT_UART_MSG_FRAME3SNIFF_POS,
 538                 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
 539                         BT_UART_MSG_FRAME3A2DP_POS,
 540                 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
 541                         BT_UART_MSG_FRAME3ACL_POS,
 542                 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
 543                         BT_UART_MSG_FRAME3MASTER_POS,
 544                 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
 545                         BT_UART_MSG_FRAME3OBEX_POS);
 546
 547         IWL_DEBUG_COEX(priv, "Idle duration = 0x%X\n",
 548                 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
 549                         BT_UART_MSG_FRAME4IDLEDURATION_POS);
 550
 551         IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
 552                         "eSCO Retransmissions = 0x%X\n",
 553                 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
 554                         BT_UART_MSG_FRAME5TXACTIVITY_POS,
 555                 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
 556                         BT_UART_MSG_FRAME5RXACTIVITY_POS,
 557                 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
 558                         BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
 559
 560         IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X\n",
 561                 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
 562                         BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
 563                 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
 564                         BT_UART_MSG_FRAME6DISCOVERABLE_POS);
 565
 566         IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
 567                         "0x%X, Inquiry = 0x%X, Connectable = 0x%X\n",
 568                 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
 569                         BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
 570                 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
 571                         BT_UART_MSG_FRAME7PAGE_POS,
 572                 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
 573                         BT_UART_MSG_FRAME7INQUIRY_POS,
 574                 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
 575                         BT_UART_MSG_FRAME7CONNECTABLE_POS);
 576 }
 577
 578 static bool iwlagn_set_kill_msk(struct iwl_priv *priv,
 579                                 struct iwl_bt_uart_msg *uart_msg)
 580 {
 581         bool need_update = false;
 582         u8 kill_msk = IWL_BT_KILL_REDUCE;
 583         static const __le32 bt_kill_ack_msg[3] = {
 584                 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
 585                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 586                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 587         static const __le32 bt_kill_cts_msg[3] = {
 588                 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
 589                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 590                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 591
 592         if (!priv->reduced_txpower)
 593                 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
 594                         ? IWL_BT_KILL_OVERRIDE : IWL_BT_KILL_DEFAULT;
 595         if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
 596             priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
 597                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
 598                 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
 599                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
 600                 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
 601                 need_update = true;
 602         }
 603         return need_update;
 604 }
 605
 606 /*
 607  * Upon RSSI changes, sends a bt config command with following changes
 608  *  1. enable/disable "reduced control frames tx power
 609  *  2. update the "kill)ack_mask" and "kill_cts_mask"
 610  *
 611  * If "reduced tx power" is enabled, uCode shall
 612  *  1. ACK/Back/CTS rate shall reduced to 6Mbps
 613  *  2. not use duplciate 20/40MHz mode
 614  */
 615 static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv,
 616                                 struct iwl_bt_uart_msg *uart_msg)
 617 {
 618         bool need_update = false;
 619         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 620         int ave_rssi;
 621
 622         if (!ctx->vif || (ctx->vif->type != NL80211_IFTYPE_STATION)) {
 623                 IWL_DEBUG_INFO(priv, "BSS ctx not active or not in sta mode\n");
 624                 return false;
 625         }
 626
 627         ave_rssi = ieee80211_ave_rssi(ctx->vif);
 628         if (!ave_rssi) {
 629                 /* no rssi data, no changes to reduce tx power */
 630                 IWL_DEBUG_COEX(priv, "no rssi data available\n");
 631                 return need_update;
 632         }
 633         if (!priv->reduced_txpower &&
 634             !iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
 635             (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) &&
 636             (uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 637             BT_UART_MSG_FRAME3OBEX_MSK)) &&
 638             !(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 639             BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK))) {
 640                 /* enabling reduced tx power */
 641                 priv->reduced_txpower = true;
 642                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 643                 need_update = true;
 644         } else if (priv->reduced_txpower &&
 645                    (iwl_is_associated(priv, IWL_RXON_CTX_PAN) ||
 646                    (ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) ||
 647                    (uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 648                    BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK)) ||
 649                    !(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 650                    BT_UART_MSG_FRAME3OBEX_MSK)))) {
 651                 /* disable reduced tx power */
 652                 priv->reduced_txpower = false;
 653                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 654                 need_update = true;
 655         }
 656
 657         return need_update;
 658 }
 659
 660 int iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
 661                                   struct iwl_rx_cmd_buffer *rxb,
 662                                   struct iwl_device_cmd *cmd)
 663 {
 664         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 665         struct iwl_bt_coex_profile_notif *coex = (void *)pkt->data;
 666         struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
 667
 668         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 669                 /* bt coex disabled */
 670                 return 0;
 671         }
 672
 673         IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
 674         IWL_DEBUG_COEX(priv, "    status: %d\n", coex->bt_status);
 675         IWL_DEBUG_COEX(priv, "    traffic load: %d\n", coex->bt_traffic_load);
 676         IWL_DEBUG_COEX(priv, "    CI compliance: %d\n",
 677                         coex->bt_ci_compliance);
 678         iwlagn_print_uartmsg(priv, uart_msg);
 679
 680         priv->last_bt_traffic_load = priv->bt_traffic_load;
 681         priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
 682
 683         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
 684                 if (priv->bt_status != coex->bt_status ||
 685                     priv->last_bt_traffic_load != coex->bt_traffic_load) {
 686                         if (coex->bt_status) {
 687                                 /* BT on */
 688                                 if (!priv->bt_ch_announce)
 689                                         priv->bt_traffic_load =
 690                                                 IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
 691                                 else
 692                                         priv->bt_traffic_load =
 693                                                 coex->bt_traffic_load;
 694                         } else {
 695                                 /* BT off */
 696                                 priv->bt_traffic_load =
 697                                         IWL_BT_COEX_TRAFFIC_LOAD_NONE;
 698                         }
 699                         priv->bt_status = coex->bt_status;
 700                         queue_work(priv->workqueue,
 701                                    &priv->bt_traffic_change_work);
 702                 }
 703         }
 704
 705         /* schedule to send runtime bt_config */
 706         /* check reduce power before change ack/cts kill mask */
 707         if (iwlagn_fill_txpower_mode(priv, uart_msg) ||
 708             iwlagn_set_kill_msk(priv, uart_msg))
 709                 queue_work(priv->workqueue, &priv->bt_runtime_config);
 710
 711
 712         /* FIXME: based on notification, adjust the prio_boost */
 713
 714         priv->bt_ci_compliance = coex->bt_ci_compliance;
 715         return 0;
 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->cfg->bt_params &&
 759             priv->cfg->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->cfg->bt_params &&
 831             priv->cfg->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                 .flags = CMD_SYNC,
1046         };
1047         int i, err;
1048
1049         if (!wowlan->n_patterns)
1050                 return 0;
1051
1052         cmd.len[0] = sizeof(*pattern_cmd) +
1053                 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1054
1055         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1056         if (!pattern_cmd)
1057                 return -ENOMEM;
1058
1059         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1060
1061         for (i = 0; i < wowlan->n_patterns; i++) {
1062                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1063
1064                 memcpy(&pattern_cmd->patterns[i].mask,
1065                         wowlan->patterns[i].mask, mask_len);
1066                 memcpy(&pattern_cmd->patterns[i].pattern,
1067                         wowlan->patterns[i].pattern,
1068                         wowlan->patterns[i].pattern_len);
1069                 pattern_cmd->patterns[i].mask_size = mask_len;
1070                 pattern_cmd->patterns[i].pattern_size =
1071                         wowlan->patterns[i].pattern_len;
1072         }
1073
1074         cmd.data[0] = pattern_cmd;
1075         err = iwl_dvm_send_cmd(priv, &cmd);
1076         kfree(pattern_cmd);
1077         return err;
1078 }
1079
1080 int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan)
1081 {
1082         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
1083         struct iwl_rxon_cmd rxon;
1084         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1085         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
1086         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
1087         struct iwlagn_d3_config_cmd d3_cfg_cmd = {};
1088         struct wowlan_key_data key_data = {
1089                 .ctx = ctx,
1090                 .bssid = ctx->active.bssid_addr,
1091                 .use_rsc_tsc = false,
1092                 .tkip = &tkip_cmd,
1093                 .use_tkip = false,
1094         };
1095         int ret, i;
1096         u16 seq;
1097
1098         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1099         if (!key_data.rsc_tsc)
1100                 return -ENOMEM;
1101
1102         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1103
1104         /*
1105          * We know the last used seqno, and the uCode expects to know that
1106          * one, it will increment before TX.
1107          */
1108         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1109         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1110
1111         /*
1112          * For QoS counters, we store the one to use next, so subtract 0x10
1113          * since the uCode will add 0x10 before using the value.
1114          */
1115         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1116                 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1117                 seq -= 0x10;
1118                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1119         }
1120
1121         if (wowlan->disconnect)
1122                 wakeup_filter_cmd.enabled |=
1123                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1124                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1125         if (wowlan->magic_pkt)
1126                 wakeup_filter_cmd.enabled |=
1127                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1128         if (wowlan->gtk_rekey_failure)
1129                 wakeup_filter_cmd.enabled |=
1130                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1131         if (wowlan->eap_identity_req)
1132                 wakeup_filter_cmd.enabled |=
1133                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1134         if (wowlan->four_way_handshake)
1135                 wakeup_filter_cmd.enabled |=
1136                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1137         if (wowlan->n_patterns)
1138                 wakeup_filter_cmd.enabled |=
1139                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1140
1141         if (wowlan->rfkill_release)
1142                 d3_cfg_cmd.wakeup_flags |=
1143                         cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1144
1145         iwl_scan_cancel_timeout(priv, 200);
1146
1147         memcpy(&rxon, &ctx->active, sizeof(rxon));
1148
1149         priv->ucode_loaded = false;
1150         iwl_trans_stop_device(priv->trans);
1151
1152         priv->wowlan = true;
1153
1154         ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
1155         if (ret)
1156                 goto out;
1157
1158         /* now configure WoWLAN ucode */
1159         ret = iwl_alive_start(priv);
1160         if (ret)
1161                 goto out;
1162
1163         memcpy(&ctx->staging, &rxon, sizeof(rxon));
1164         ret = iwlagn_commit_rxon(priv, ctx);
1165         if (ret)
1166                 goto out;
1167
1168         ret = iwl_power_update_mode(priv, true);
1169         if (ret)
1170                 goto out;
1171
1172         if (!iwlwifi_mod_params.sw_crypto) {
1173                 /* mark all keys clear */
1174                 priv->ucode_key_table = 0;
1175                 ctx->key_mapping_keys = 0;
1176
1177                 /*
1178                  * This needs to be unlocked due to lock ordering
1179                  * constraints. Since we're in the suspend path
1180                  * that isn't really a problem though.
1181                  */
1182                 mutex_unlock(&priv->mutex);
1183                 ieee80211_iter_keys(priv->hw, ctx->vif,
1184                                     iwlagn_wowlan_program_keys,
1185                                     &key_data);
1186                 mutex_lock(&priv->mutex);
1187                 if (key_data.error) {
1188                         ret = -EIO;
1189                         goto out;
1190                 }
1191
1192                 if (key_data.use_rsc_tsc) {
1193                         struct iwl_host_cmd rsc_tsc_cmd = {
1194                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1195                                 .flags = CMD_SYNC,
1196                                 .data[0] = key_data.rsc_tsc,
1197                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1198                                 .len[0] = sizeof(*key_data.rsc_tsc),
1199                         };
1200
1201                         ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd);
1202                         if (ret)
1203                                 goto out;
1204                 }
1205
1206                 if (key_data.use_tkip) {
1207                         ret = iwl_dvm_send_cmd_pdu(priv,
1208                                                  REPLY_WOWLAN_TKIP_PARAMS,
1209                                                  CMD_SYNC, sizeof(tkip_cmd),
1210                                                  &tkip_cmd);
1211                         if (ret)
1212                                 goto out;
1213                 }
1214
1215                 if (priv->have_rekey_data) {
1216                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1217                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1218                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1219                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1220                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1221                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
1222
1223                         ret = iwl_dvm_send_cmd_pdu(priv,
1224                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
1225                                                  CMD_SYNC, sizeof(kek_kck_cmd),
1226                                                  &kek_kck_cmd);
1227                         if (ret)
1228                                 goto out;
1229                 }
1230         }
1231
1232         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, CMD_SYNC,
1233                                      sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1234         if (ret)
1235                 goto out;
1236
1237         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER,
1238                                  CMD_SYNC, sizeof(wakeup_filter_cmd),
1239                                  &wakeup_filter_cmd);
1240         if (ret)
1241                 goto out;
1242
1243         ret = iwlagn_send_patterns(priv, wowlan);
1244  out:
1245         kfree(key_data.rsc_tsc);
1246         return ret;
1247 }
1248 #endif
1249
1250 int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
1251 {
1252         if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
1253                 IWL_WARN(priv, "Not sending command - %s KILL\n",
1254                          iwl_is_rfkill(priv) ? "RF" : "CT");
1255                 return -EIO;
1256         }
1257
1258         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
1259                 IWL_ERR(priv, "Command %s failed: FW Error\n",
1260                         iwl_dvm_get_cmd_string(cmd->id));
1261                 return -EIO;
1262         }
1263
1264         /*
1265          * Synchronous commands from this op-mode must hold
1266          * the mutex, this ensures we don't try to send two
1267          * (or more) synchronous commands at a time.
1268          */
1269         if (!(cmd->flags & CMD_ASYNC))
1270                 lockdep_assert_held(&priv->mutex);
1271
1272         if (priv->ucode_owner == IWL_OWNERSHIP_TM &&
1273             !(cmd->flags & CMD_ON_DEMAND)) {
1274                 IWL_DEBUG_HC(priv, "tm own the uCode, no regular hcmd send\n");
1275                 return -EIO;
1276         }
1277
1278         return iwl_trans_send_cmd(priv->trans, cmd);
1279 }
1280
1281 int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id,
1282                          u32 flags, u16 len, const void *data)
1283 {
1284         struct iwl_host_cmd cmd = {
1285                 .id = id,
1286                 .len = { len, },
1287                 .data = { data, },
1288                 .flags = flags,
1289         };
1290
1291         return iwl_dvm_send_cmd(priv, &cmd);
1292 }