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 COPYING.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29 #include <linux/etherdevice.h>
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/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, u32 scd_q_msk)
 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         if (scd_q_msk)
 166                 flush_cmd.queue_control = cpu_to_le32(scd_q_msk);
 167
 168         IWL_DEBUG_INFO(priv, "queue control: 0x%x\n",
 169                        flush_cmd.queue_control);
 170         flush_cmd.flush_control = cpu_to_le16(IWL_DROP_ALL);
 171
 172         return iwl_dvm_send_cmd(priv, &cmd);
 173 }
 174
 175 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv)
 176 {
 177         mutex_lock(&priv->mutex);
 178         ieee80211_stop_queues(priv->hw);
 179         if (iwlagn_txfifo_flush(priv, 0)) {
 180                 IWL_ERR(priv, "flush request fail\n");
 181                 goto done;
 182         }
 183         IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
 184         iwl_trans_wait_tx_queue_empty(priv->trans);
 185 done:
 186         ieee80211_wake_queues(priv->hw);
 187         mutex_unlock(&priv->mutex);
 188 }
 189
 190 /*
 191  * BT coex
 192  */
 193 /* Notmal TDM */
 194 static const __le32 iwlagn_def_3w_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 195         cpu_to_le32(0xaaaaaaaa),
 196         cpu_to_le32(0xaaaaaaaa),
 197         cpu_to_le32(0xaeaaaaaa),
 198         cpu_to_le32(0xaaaaaaaa),
 199         cpu_to_le32(0xcc00ff28),
 200         cpu_to_le32(0x0000aaaa),
 201         cpu_to_le32(0xcc00aaaa),
 202         cpu_to_le32(0x0000aaaa),
 203         cpu_to_le32(0xc0004000),
 204         cpu_to_le32(0x00004000),
 205         cpu_to_le32(0xf0005000),
 206         cpu_to_le32(0xf0005000),
 207 };
 208
 209
 210 /* Loose Coex */
 211 static const __le32 iwlagn_loose_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 212         cpu_to_le32(0xaaaaaaaa),
 213         cpu_to_le32(0xaaaaaaaa),
 214         cpu_to_le32(0xaeaaaaaa),
 215         cpu_to_le32(0xaaaaaaaa),
 216         cpu_to_le32(0xcc00ff28),
 217         cpu_to_le32(0x0000aaaa),
 218         cpu_to_le32(0xcc00aaaa),
 219         cpu_to_le32(0x0000aaaa),
 220         cpu_to_le32(0x00000000),
 221         cpu_to_le32(0x00000000),
 222         cpu_to_le32(0xf0005000),
 223         cpu_to_le32(0xf0005000),
 224 };
 225
 226 /* Full concurrency */
 227 static const __le32 iwlagn_concurrent_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 228         cpu_to_le32(0xaaaaaaaa),
 229         cpu_to_le32(0xaaaaaaaa),
 230         cpu_to_le32(0xaaaaaaaa),
 231         cpu_to_le32(0xaaaaaaaa),
 232         cpu_to_le32(0xaaaaaaaa),
 233         cpu_to_le32(0xaaaaaaaa),
 234         cpu_to_le32(0xaaaaaaaa),
 235         cpu_to_le32(0xaaaaaaaa),
 236         cpu_to_le32(0x00000000),
 237         cpu_to_le32(0x00000000),
 238         cpu_to_le32(0x00000000),
 239         cpu_to_le32(0x00000000),
 240 };
 241
 242 void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
 243 {
 244         struct iwl_basic_bt_cmd basic = {
 245                 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
 246                 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
 247                 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
 248                 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
 249         };
 250         struct iwl_bt_cmd_v1 bt_cmd_v1;
 251         struct iwl_bt_cmd_v2 bt_cmd_v2;
 252         int ret;
 253
 254         BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
 255                         sizeof(basic.bt3_lookup_table));
 256
 257         if (priv->cfg->bt_params) {
 258                 /*
 259                  * newer generation of devices (2000 series and newer)
 260                  * use the version 2 of the bt command
 261                  * we need to make sure sending the host command
 262                  * with correct data structure to avoid uCode assert
 263                  */
 264                 if (priv->cfg->bt_params->bt_session_2) {
 265                         bt_cmd_v2.prio_boost = cpu_to_le32(
 266                                 priv->cfg->bt_params->bt_prio_boost);
 267                         bt_cmd_v2.tx_prio_boost = 0;
 268                         bt_cmd_v2.rx_prio_boost = 0;
 269                 } else {
 270                         /* older version only has 8 bits */
 271                         WARN_ON(priv->cfg->bt_params->bt_prio_boost & ~0xFF);
 272                         bt_cmd_v1.prio_boost =
 273                                 priv->cfg->bt_params->bt_prio_boost;
 274                         bt_cmd_v1.tx_prio_boost = 0;
 275                         bt_cmd_v1.rx_prio_boost = 0;
 276                 }
 277         } else {
 278                 IWL_ERR(priv, "failed to construct BT Coex Config\n");
 279                 return;
 280         }
 281
 282         /*
 283          * Possible situations when BT needs to take over for receive,
 284          * at the same time where STA needs to response to AP's frame(s),
 285          * reduce the tx power of the required response frames, by that,
 286          * allow the concurrent BT receive & WiFi transmit
 287          * (BT - ANT A, WiFi -ANT B), without interference to one another
 288          *
 289          * Reduced tx power apply to control frames only (ACK/Back/CTS)
 290          * when indicated by the BT config command
 291          */
 292         basic.kill_ack_mask = priv->kill_ack_mask;
 293         basic.kill_cts_mask = priv->kill_cts_mask;
 294         if (priv->reduced_txpower)
 295                 basic.reduce_txpower = IWLAGN_BT_REDUCED_TX_PWR;
 296         basic.valid = priv->bt_valid;
 297
 298         /*
 299          * Configure BT coex mode to "no coexistence" when the
 300          * user disabled BT coexistence, we have no interface
 301          * (might be in monitor mode), or the interface is in
 302          * IBSS mode (no proper uCode support for coex then).
 303          */
 304         if (!iwlwifi_mod_params.bt_coex_active ||
 305             priv->iw_mode == NL80211_IFTYPE_ADHOC) {
 306                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
 307         } else {
 308                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
 309                                         IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
 310
 311                 if (!priv->bt_enable_pspoll)
 312                         basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 313                 else
 314                         basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 315
 316                 if (priv->bt_ch_announce)
 317                         basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
 318                 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
 319         }
 320         priv->bt_enable_flag = basic.flags;
 321         if (priv->bt_full_concurrent)
 322                 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
 323                         sizeof(iwlagn_concurrent_lookup));
 324         else
 325                 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
 326                         sizeof(iwlagn_def_3w_lookup));
 327
 328         IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
 329                        basic.flags ? "active" : "disabled",
 330                        priv->bt_full_concurrent ?
 331                        "full concurrency" : "3-wire");
 332
 333         if (priv->cfg->bt_params->bt_session_2) {
 334                 memcpy(&bt_cmd_v2.basic, &basic,
 335                         sizeof(basic));
 336                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 337                         CMD_SYNC, sizeof(bt_cmd_v2), &bt_cmd_v2);
 338         } else {
 339                 memcpy(&bt_cmd_v1.basic, &basic,
 340                         sizeof(basic));
 341                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 342                         CMD_SYNC, sizeof(bt_cmd_v1), &bt_cmd_v1);
 343         }
 344         if (ret)
 345                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 346
 347 }
 348
 349 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
 350 {
 351         struct iwl_rxon_context *ctx, *found_ctx = NULL;
 352         bool found_ap = false;
 353
 354         lockdep_assert_held(&priv->mutex);
 355
 356         /* Check whether AP or GO mode is active. */
 357         if (rssi_ena) {
 358                 for_each_context(priv, ctx) {
 359                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
 360                             iwl_is_associated_ctx(ctx)) {
 361                                 found_ap = true;
 362                                 break;
 363                         }
 364                 }
 365         }
 366
 367         /*
 368          * If disable was received or If GO/AP mode, disable RSSI
 369          * measurements.
 370          */
 371         if (!rssi_ena || found_ap) {
 372                 if (priv->cur_rssi_ctx) {
 373                         ctx = priv->cur_rssi_ctx;
 374                         ieee80211_disable_rssi_reports(ctx->vif);
 375                         priv->cur_rssi_ctx = NULL;
 376                 }
 377                 return;
 378         }
 379
 380         /*
 381          * If rssi measurements need to be enabled, consider all cases now.
 382          * Figure out how many contexts are active.
 383          */
 384         for_each_context(priv, ctx) {
 385                 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
 386                     iwl_is_associated_ctx(ctx)) {
 387                         found_ctx = ctx;
 388                         break;
 389                 }
 390         }
 391
 392         /*
 393          * rssi monitor already enabled for the correct interface...nothing
 394          * to do.
 395          */
 396         if (found_ctx == priv->cur_rssi_ctx)
 397                 return;
 398
 399         /*
 400          * Figure out if rssi monitor is currently enabled, and needs
 401          * to be changed. If rssi monitor is already enabled, disable
 402          * it first else just enable rssi measurements on the
 403          * interface found above.
 404          */
 405         if (priv->cur_rssi_ctx) {
 406                 ctx = priv->cur_rssi_ctx;
 407                 if (ctx->vif)
 408                         ieee80211_disable_rssi_reports(ctx->vif);
 409         }
 410
 411         priv->cur_rssi_ctx = found_ctx;
 412
 413         if (!found_ctx)
 414                 return;
 415
 416         ieee80211_enable_rssi_reports(found_ctx->vif,
 417                         IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
 418                         IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
 419 }
 420
 421 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
 422 {
 423         return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >>
 424                         BT_UART_MSG_FRAME3SCOESCO_POS;
 425 }
 426
 427 static void iwlagn_bt_traffic_change_work(struct work_struct *work)
 428 {
 429         struct iwl_priv *priv =
 430                 container_of(work, struct iwl_priv, bt_traffic_change_work);
 431         struct iwl_rxon_context *ctx;
 432         int smps_request = -1;
 433
 434         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 435                 /* bt coex disabled */
 436                 return;
 437         }
 438
 439         /*
 440          * Note: bt_traffic_load can be overridden by scan complete and
 441          * coex profile notifications. Ignore that since only bad consequence
 442          * can be not matching debug print with actual state.
 443          */
 444         IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
 445                        priv->bt_traffic_load);
 446
 447         switch (priv->bt_traffic_load) {
 448         case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
 449                 if (priv->bt_status)
 450                         smps_request = IEEE80211_SMPS_DYNAMIC;
 451                 else
 452                         smps_request = IEEE80211_SMPS_AUTOMATIC;
 453                 break;
 454         case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
 455                 smps_request = IEEE80211_SMPS_DYNAMIC;
 456                 break;
 457         case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
 458         case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
 459                 smps_request = IEEE80211_SMPS_STATIC;
 460                 break;
 461         default:
 462                 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
 463                         priv->bt_traffic_load);
 464                 break;
 465         }
 466
 467         mutex_lock(&priv->mutex);
 468
 469         /*
 470          * We can not send command to firmware while scanning. When the scan
 471          * complete we will schedule this work again. We do check with mutex
 472          * locked to prevent new scan request to arrive. We do not check
 473          * STATUS_SCANNING to avoid race when queue_work two times from
 474          * different notifications, but quit and not perform any work at all.
 475          */
 476         if (test_bit(STATUS_SCAN_HW, &priv->status))
 477                 goto out;
 478
 479         iwl_update_chain_flags(priv);
 480
 481         if (smps_request != -1) {
 482                 priv->current_ht_config.smps = smps_request;
 483                 for_each_context(priv, ctx) {
 484                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
 485                                 ieee80211_request_smps(ctx->vif, smps_request);
 486                 }
 487         }
 488
 489         /*
 490          * Dynamic PS poll related functionality. Adjust RSSI measurements if
 491          * necessary.
 492          */
 493         iwlagn_bt_coex_rssi_monitor(priv);
 494 out:
 495         mutex_unlock(&priv->mutex);
 496 }
 497
 498 /*
 499  * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
 500  * correct interface or disable it if this is the last interface to be
 501  * removed.
 502  */
 503 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
 504 {
 505         if (priv->bt_is_sco &&
 506             priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
 507                 iwlagn_bt_adjust_rssi_monitor(priv, true);
 508         else
 509                 iwlagn_bt_adjust_rssi_monitor(priv, false);
 510 }
 511
 512 static void iwlagn_print_uartmsg(struct iwl_priv *priv,
 513                                 struct iwl_bt_uart_msg *uart_msg)
 514 {
 515         IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
 516                         "Update Req = 0x%X\n",
 517                 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
 518                         BT_UART_MSG_FRAME1MSGTYPE_POS,
 519                 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
 520                         BT_UART_MSG_FRAME1SSN_POS,
 521                 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
 522                         BT_UART_MSG_FRAME1UPDATEREQ_POS);
 523
 524         IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
 525                         "Chl_SeqN = 0x%X, In band = 0x%X\n",
 526                 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
 527                         BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
 528                 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
 529                         BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
 530                 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
 531                         BT_UART_MSG_FRAME2CHLSEQN_POS,
 532                 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
 533                         BT_UART_MSG_FRAME2INBAND_POS);
 534
 535         IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
 536                         "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X\n",
 537                 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 538                         BT_UART_MSG_FRAME3SCOESCO_POS,
 539                 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
 540                         BT_UART_MSG_FRAME3SNIFF_POS,
 541                 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
 542                         BT_UART_MSG_FRAME3A2DP_POS,
 543                 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
 544                         BT_UART_MSG_FRAME3ACL_POS,
 545                 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
 546                         BT_UART_MSG_FRAME3MASTER_POS,
 547                 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
 548                         BT_UART_MSG_FRAME3OBEX_POS);
 549
 550         IWL_DEBUG_COEX(priv, "Idle duration = 0x%X\n",
 551                 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
 552                         BT_UART_MSG_FRAME4IDLEDURATION_POS);
 553
 554         IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
 555                         "eSCO Retransmissions = 0x%X\n",
 556                 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
 557                         BT_UART_MSG_FRAME5TXACTIVITY_POS,
 558                 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
 559                         BT_UART_MSG_FRAME5RXACTIVITY_POS,
 560                 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
 561                         BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
 562
 563         IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X\n",
 564                 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
 565                         BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
 566                 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
 567                         BT_UART_MSG_FRAME6DISCOVERABLE_POS);
 568
 569         IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
 570                         "0x%X, Inquiry = 0x%X, Connectable = 0x%X\n",
 571                 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
 572                         BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
 573                 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
 574                         BT_UART_MSG_FRAME7PAGE_POS,
 575                 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
 576                         BT_UART_MSG_FRAME7INQUIRY_POS,
 577                 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
 578                         BT_UART_MSG_FRAME7CONNECTABLE_POS);
 579 }
 580
 581 static bool iwlagn_set_kill_msk(struct iwl_priv *priv,
 582                                 struct iwl_bt_uart_msg *uart_msg)
 583 {
 584         bool need_update = false;
 585         u8 kill_msk = IWL_BT_KILL_REDUCE;
 586         static const __le32 bt_kill_ack_msg[3] = {
 587                 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
 588                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 589                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 590         static const __le32 bt_kill_cts_msg[3] = {
 591                 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
 592                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 593                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 594
 595         if (!priv->reduced_txpower)
 596                 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
 597                         ? IWL_BT_KILL_OVERRIDE : IWL_BT_KILL_DEFAULT;
 598         if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
 599             priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
 600                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
 601                 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
 602                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
 603                 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
 604                 need_update = true;
 605         }
 606         return need_update;
 607 }
 608
 609 /*
 610  * Upon RSSI changes, sends a bt config command with following changes
 611  *  1. enable/disable "reduced control frames tx power
 612  *  2. update the "kill)ack_mask" and "kill_cts_mask"
 613  *
 614  * If "reduced tx power" is enabled, uCode shall
 615  *  1. ACK/Back/CTS rate shall reduced to 6Mbps
 616  *  2. not use duplciate 20/40MHz mode
 617  */
 618 static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv,
 619                                 struct iwl_bt_uart_msg *uart_msg)
 620 {
 621         bool need_update = false;
 622         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 623         int ave_rssi;
 624
 625         if (!ctx->vif || (ctx->vif->type != NL80211_IFTYPE_STATION)) {
 626                 IWL_DEBUG_INFO(priv, "BSS ctx not active or not in sta mode\n");
 627                 return false;
 628         }
 629
 630         ave_rssi = ieee80211_ave_rssi(ctx->vif);
 631         if (!ave_rssi) {
 632                 /* no rssi data, no changes to reduce tx power */
 633                 IWL_DEBUG_COEX(priv, "no rssi data available\n");
 634                 return need_update;
 635         }
 636         if (!priv->reduced_txpower &&
 637             !iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
 638             (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) &&
 639             (uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 640             BT_UART_MSG_FRAME3OBEX_MSK)) &&
 641             !(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 642             BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK))) {
 643                 /* enabling reduced tx power */
 644                 priv->reduced_txpower = true;
 645                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 646                 need_update = true;
 647         } else if (priv->reduced_txpower &&
 648                    (iwl_is_associated(priv, IWL_RXON_CTX_PAN) ||
 649                    (ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) ||
 650                    (uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 651                    BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK)) ||
 652                    !(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 653                    BT_UART_MSG_FRAME3OBEX_MSK)))) {
 654                 /* disable reduced tx power */
 655                 priv->reduced_txpower = false;
 656                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 657                 need_update = true;
 658         }
 659
 660         return need_update;
 661 }
 662
 663 int iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
 664                                   struct iwl_rx_cmd_buffer *rxb,
 665                                   struct iwl_device_cmd *cmd)
 666 {
 667         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 668         struct iwl_bt_coex_profile_notif *coex = (void *)pkt->data;
 669         struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
 670
 671         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 672                 /* bt coex disabled */
 673                 return 0;
 674         }
 675
 676         IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
 677         IWL_DEBUG_COEX(priv, "    status: %d\n", coex->bt_status);
 678         IWL_DEBUG_COEX(priv, "    traffic load: %d\n", coex->bt_traffic_load);
 679         IWL_DEBUG_COEX(priv, "    CI compliance: %d\n",
 680                         coex->bt_ci_compliance);
 681         iwlagn_print_uartmsg(priv, uart_msg);
 682
 683         priv->last_bt_traffic_load = priv->bt_traffic_load;
 684         priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
 685
 686         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
 687                 if (priv->bt_status != coex->bt_status ||
 688                     priv->last_bt_traffic_load != coex->bt_traffic_load) {
 689                         if (coex->bt_status) {
 690                                 /* BT on */
 691                                 if (!priv->bt_ch_announce)
 692                                         priv->bt_traffic_load =
 693                                                 IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
 694                                 else
 695                                         priv->bt_traffic_load =
 696                                                 coex->bt_traffic_load;
 697                         } else {
 698                                 /* BT off */
 699                                 priv->bt_traffic_load =
 700                                         IWL_BT_COEX_TRAFFIC_LOAD_NONE;
 701                         }
 702                         priv->bt_status = coex->bt_status;
 703                         queue_work(priv->workqueue,
 704                                    &priv->bt_traffic_change_work);
 705                 }
 706         }
 707
 708         /* schedule to send runtime bt_config */
 709         /* check reduce power before change ack/cts kill mask */
 710         if (iwlagn_fill_txpower_mode(priv, uart_msg) ||
 711             iwlagn_set_kill_msk(priv, uart_msg))
 712                 queue_work(priv->workqueue, &priv->bt_runtime_config);
 713
 714
 715         /* FIXME: based on notification, adjust the prio_boost */
 716
 717         priv->bt_ci_compliance = coex->bt_ci_compliance;
 718         return 0;
 719 }
 720
 721 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
 722 {
 723         priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
 724                 iwlagn_bt_coex_profile_notif;
 725 }
 726
 727 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
 728 {
 729         INIT_WORK(&priv->bt_traffic_change_work,
 730                   iwlagn_bt_traffic_change_work);
 731 }
 732
 733 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
 734 {
 735         cancel_work_sync(&priv->bt_traffic_change_work);
 736 }
 737
 738 static bool is_single_rx_stream(struct iwl_priv *priv)
 739 {
 740         return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
 741                priv->current_ht_config.single_chain_sufficient;
 742 }
 743
 744 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 745 #define IWL_NUM_RX_CHAINS_SINGLE        2
 746 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 747 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 748
 749 /*
 750  * Determine how many receiver/antenna chains to use.
 751  *
 752  * More provides better reception via diversity.  Fewer saves power
 753  * at the expense of throughput, but only when not in powersave to
 754  * start with.
 755  *
 756  * MIMO (dual stream) requires at least 2, but works better with 3.
 757  * This does not determine *which* chains to use, just how many.
 758  */
 759 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 760 {
 761         if (priv->cfg->bt_params &&
 762             priv->cfg->bt_params->advanced_bt_coexist &&
 763             (priv->bt_full_concurrent ||
 764              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 765                 /*
 766                  * only use chain 'A' in bt high traffic load or
 767                  * full concurrency mode
 768                  */
 769                 return IWL_NUM_RX_CHAINS_SINGLE;
 770         }
 771         /* # of Rx chains to use when expecting MIMO. */
 772         if (is_single_rx_stream(priv))
 773                 return IWL_NUM_RX_CHAINS_SINGLE;
 774         else
 775                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 776 }
 777
 778 /*
 779  * When we are in power saving mode, unless device support spatial
 780  * multiplexing power save, use the active count for rx chain count.
 781  */
 782 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 783 {
 784         /* # Rx chains when idling, depending on SMPS mode */
 785         switch (priv->current_ht_config.smps) {
 786         case IEEE80211_SMPS_STATIC:
 787         case IEEE80211_SMPS_DYNAMIC:
 788                 return IWL_NUM_IDLE_CHAINS_SINGLE;
 789         case IEEE80211_SMPS_AUTOMATIC:
 790         case IEEE80211_SMPS_OFF:
 791                 return active_cnt;
 792         default:
 793                 WARN(1, "invalid SMPS mode %d",
 794                      priv->current_ht_config.smps);
 795                 return active_cnt;
 796         }
 797 }
 798
 799 /* up to 4 chains */
 800 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
 801 {
 802         u8 res;
 803         res = (chain_bitmap & BIT(0)) >> 0;
 804         res += (chain_bitmap & BIT(1)) >> 1;
 805         res += (chain_bitmap & BIT(2)) >> 2;
 806         res += (chain_bitmap & BIT(3)) >> 3;
 807         return res;
 808 }
 809
 810 /**
 811  * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
 812  *
 813  * Selects how many and which Rx receivers/antennas/chains to use.
 814  * This should not be used for scan command ... it puts data in wrong place.
 815  */
 816 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 817 {
 818         bool is_single = is_single_rx_stream(priv);
 819         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 820         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
 821         u32 active_chains;
 822         u16 rx_chain;
 823
 824         /* Tell uCode which antennas are actually connected.
 825          * Before first association, we assume all antennas are connected.
 826          * Just after first association, iwl_chain_noise_calibration()
 827          *    checks which antennas actually *are* connected. */
 828         if (priv->chain_noise_data.active_chains)
 829                 active_chains = priv->chain_noise_data.active_chains;
 830         else
 831                 active_chains = priv->nvm_data->valid_rx_ant;
 832
 833         if (priv->cfg->bt_params &&
 834             priv->cfg->bt_params->advanced_bt_coexist &&
 835             (priv->bt_full_concurrent ||
 836              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 837                 /*
 838                  * only use chain 'A' in bt high traffic load or
 839                  * full concurrency mode
 840                  */
 841                 active_chains = first_antenna(active_chains);
 842         }
 843
 844         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
 845
 846         /* How many receivers should we use? */
 847         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
 848         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
 849
 850
 851         /* correct rx chain count according hw settings
 852          * and chain noise calibration
 853          */
 854         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
 855         if (valid_rx_cnt < active_rx_cnt)
 856                 active_rx_cnt = valid_rx_cnt;
 857
 858         if (valid_rx_cnt < idle_rx_cnt)
 859                 idle_rx_cnt = valid_rx_cnt;
 860
 861         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
 862         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
 863
 864         ctx->staging.rx_chain = cpu_to_le16(rx_chain);
 865
 866         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
 867                 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
 868         else
 869                 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
 870
 871         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
 872                         ctx->staging.rx_chain,
 873                         active_rx_cnt, idle_rx_cnt);
 874
 875         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
 876                 active_rx_cnt < idle_rx_cnt);
 877 }
 878
 879 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
 880 {
 881         int i;
 882         u8 ind = ant;
 883
 884         if (priv->band == IEEE80211_BAND_2GHZ &&
 885             priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
 886                 return 0;
 887
 888         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 889                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 890                 if (valid & BIT(ind))
 891                         return ind;
 892         }
 893         return ant;
 894 }
 895
 896 #ifdef CONFIG_PM_SLEEP
 897 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
 898 {
 899         int i;
 900
 901         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
 902                 out[i] = cpu_to_le16(p1k[i]);
 903 }
 904
 905 struct wowlan_key_data {
 906         struct iwl_rxon_context *ctx;
 907         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
 908         struct iwlagn_wowlan_tkip_params_cmd *tkip;
 909         const u8 *bssid;
 910         bool error, use_rsc_tsc, use_tkip;
 911 };
 912
 913
 914 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
 915                                struct ieee80211_vif *vif,
 916                                struct ieee80211_sta *sta,
 917                                struct ieee80211_key_conf *key,
 918                                void *_data)
 919 {
 920         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 921         struct wowlan_key_data *data = _data;
 922         struct iwl_rxon_context *ctx = data->ctx;
 923         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
 924         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 925         struct iwlagn_p1k_cache *rx_p1ks;
 926         u8 *rx_mic_key;
 927         struct ieee80211_key_seq seq;
 928         u32 cur_rx_iv32 = 0;
 929         u16 p1k[IWLAGN_P1K_SIZE];
 930         int ret, i;
 931
 932         mutex_lock(&priv->mutex);
 933
 934         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 935              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 936              !sta && !ctx->key_mapping_keys)
 937                 ret = iwl_set_default_wep_key(priv, ctx, key);
 938         else
 939                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
 940
 941         if (ret) {
 942                 IWL_ERR(priv, "Error setting key during suspend!\n");
 943                 data->error = true;
 944         }
 945
 946         switch (key->cipher) {
 947         case WLAN_CIPHER_SUITE_TKIP:
 948                 if (sta) {
 949                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
 950                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
 951
 952                         rx_p1ks = data->tkip->rx_uni;
 953
 954                         ieee80211_get_key_tx_seq(key, &seq);
 955                         tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
 956                         tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
 957
 958                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
 959                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
 960
 961                         memcpy(data->tkip->mic_keys.tx,
 962                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
 963                                IWLAGN_MIC_KEY_SIZE);
 964
 965                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
 966                 } else {
 967                         tkip_sc =
 968                                 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
 969                         rx_p1ks = data->tkip->rx_multi;
 970                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
 971                 }
 972
 973                 /*
 974                  * For non-QoS this relies on the fact that both the uCode and
 975                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 976                  * for checking the IV in the frames.
 977                  */
 978                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
 979                         ieee80211_get_key_rx_seq(key, i, &seq);
 980                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
 981                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
 982                         /* wrapping isn't allowed, AP must rekey */
 983                         if (seq.tkip.iv32 > cur_rx_iv32)
 984                                 cur_rx_iv32 = seq.tkip.iv32;
 985                 }
 986
 987                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
 988                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
 989                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
 990                                           cur_rx_iv32 + 1, p1k);
 991                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
 992
 993                 memcpy(rx_mic_key,
 994                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
 995                        IWLAGN_MIC_KEY_SIZE);
 996
 997                 data->use_tkip = true;
 998                 data->use_rsc_tsc = true;
 999                 break;
1000         case WLAN_CIPHER_SUITE_CCMP:
1001                 if (sta) {
1002                         u8 *pn = seq.ccmp.pn;
1003
1004                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
1005                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
1006
1007                         ieee80211_get_key_tx_seq(key, &seq);
1008                         aes_tx_sc->pn = cpu_to_le64(
1009                                         (u64)pn[5] |
1010                                         ((u64)pn[4] << 8) |
1011                                         ((u64)pn[3] << 16) |
1012                                         ((u64)pn[2] << 24) |
1013                                         ((u64)pn[1] << 32) |
1014                                         ((u64)pn[0] << 40));
1015                 } else
1016                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
1017
1018                 /*
1019                  * For non-QoS this relies on the fact that both the uCode and
1020                  * mac80211 use TID 0 for checking the IV in the frames.
1021                  */
1022                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1023                         u8 *pn = seq.ccmp.pn;
1024
1025                         ieee80211_get_key_rx_seq(key, i, &seq);
1026                         aes_sc->pn = cpu_to_le64(
1027                                         (u64)pn[5] |
1028                                         ((u64)pn[4] << 8) |
1029                                         ((u64)pn[3] << 16) |
1030                                         ((u64)pn[2] << 24) |
1031                                         ((u64)pn[1] << 32) |
1032                                         ((u64)pn[0] << 40));
1033                 }
1034                 data->use_rsc_tsc = true;
1035                 break;
1036         }
1037
1038         mutex_unlock(&priv->mutex);
1039 }
1040
1041 int iwlagn_send_patterns(struct iwl_priv *priv,
1042                         struct cfg80211_wowlan *wowlan)
1043 {
1044         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1045         struct iwl_host_cmd cmd = {
1046                 .id = REPLY_WOWLAN_PATTERNS,
1047                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1048                 .flags = CMD_SYNC,
1049         };
1050         int i, err;
1051
1052         if (!wowlan->n_patterns)
1053                 return 0;
1054
1055         cmd.len[0] = sizeof(*pattern_cmd) +
1056                 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1057
1058         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1059         if (!pattern_cmd)
1060                 return -ENOMEM;
1061
1062         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1063
1064         for (i = 0; i < wowlan->n_patterns; i++) {
1065                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1066
1067                 memcpy(&pattern_cmd->patterns[i].mask,
1068                         wowlan->patterns[i].mask, mask_len);
1069                 memcpy(&pattern_cmd->patterns[i].pattern,
1070                         wowlan->patterns[i].pattern,
1071                         wowlan->patterns[i].pattern_len);
1072                 pattern_cmd->patterns[i].mask_size = mask_len;
1073                 pattern_cmd->patterns[i].pattern_size =
1074                         wowlan->patterns[i].pattern_len;
1075         }
1076
1077         cmd.data[0] = pattern_cmd;
1078         err = iwl_dvm_send_cmd(priv, &cmd);
1079         kfree(pattern_cmd);
1080         return err;
1081 }
1082
1083 int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan)
1084 {
1085         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
1086         struct iwl_rxon_cmd rxon;
1087         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1088         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
1089         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
1090         struct iwlagn_d3_config_cmd d3_cfg_cmd = {
1091                 /*
1092                  * Program the minimum sleep time to 10 seconds, as many
1093                  * platforms have issues processing a wakeup signal while
1094                  * still being in the process of suspending.
1095                  */
1096                 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1097         };
1098         struct wowlan_key_data key_data = {
1099                 .ctx = ctx,
1100                 .bssid = ctx->active.bssid_addr,
1101                 .use_rsc_tsc = false,
1102                 .tkip = &tkip_cmd,
1103                 .use_tkip = false,
1104         };
1105         int ret, i;
1106         u16 seq;
1107
1108         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1109         if (!key_data.rsc_tsc)
1110                 return -ENOMEM;
1111
1112         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1113
1114         /*
1115          * We know the last used seqno, and the uCode expects to know that
1116          * one, it will increment before TX.
1117          */
1118         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1119         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1120
1121         /*
1122          * For QoS counters, we store the one to use next, so subtract 0x10
1123          * since the uCode will add 0x10 before using the value.
1124          */
1125         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1126                 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1127                 seq -= 0x10;
1128                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1129         }
1130
1131         if (wowlan->disconnect)
1132                 wakeup_filter_cmd.enabled |=
1133                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1134                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1135         if (wowlan->magic_pkt)
1136                 wakeup_filter_cmd.enabled |=
1137                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1138         if (wowlan->gtk_rekey_failure)
1139                 wakeup_filter_cmd.enabled |=
1140                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1141         if (wowlan->eap_identity_req)
1142                 wakeup_filter_cmd.enabled |=
1143                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1144         if (wowlan->four_way_handshake)
1145                 wakeup_filter_cmd.enabled |=
1146                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1147         if (wowlan->n_patterns)
1148                 wakeup_filter_cmd.enabled |=
1149                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1150
1151         if (wowlan->rfkill_release)
1152                 d3_cfg_cmd.wakeup_flags |=
1153                         cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1154
1155         iwl_scan_cancel_timeout(priv, 200);
1156
1157         memcpy(&rxon, &ctx->active, sizeof(rxon));
1158
1159         priv->ucode_loaded = false;
1160         iwl_trans_stop_device(priv->trans);
1161
1162         priv->wowlan = true;
1163
1164         ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
1165         if (ret)
1166                 goto out;
1167
1168         /* now configure WoWLAN ucode */
1169         ret = iwl_alive_start(priv);
1170         if (ret)
1171                 goto out;
1172
1173         memcpy(&ctx->staging, &rxon, sizeof(rxon));
1174         ret = iwlagn_commit_rxon(priv, ctx);
1175         if (ret)
1176                 goto out;
1177
1178         ret = iwl_power_update_mode(priv, true);
1179         if (ret)
1180                 goto out;
1181
1182         if (!iwlwifi_mod_params.sw_crypto) {
1183                 /* mark all keys clear */
1184                 priv->ucode_key_table = 0;
1185                 ctx->key_mapping_keys = 0;
1186
1187                 /*
1188                  * This needs to be unlocked due to lock ordering
1189                  * constraints. Since we're in the suspend path
1190                  * that isn't really a problem though.
1191                  */
1192                 mutex_unlock(&priv->mutex);
1193                 ieee80211_iter_keys(priv->hw, ctx->vif,
1194                                     iwlagn_wowlan_program_keys,
1195                                     &key_data);
1196                 mutex_lock(&priv->mutex);
1197                 if (key_data.error) {
1198                         ret = -EIO;
1199                         goto out;
1200                 }
1201
1202                 if (key_data.use_rsc_tsc) {
1203                         struct iwl_host_cmd rsc_tsc_cmd = {
1204                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1205                                 .flags = CMD_SYNC,
1206                                 .data[0] = key_data.rsc_tsc,
1207                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1208                                 .len[0] = sizeof(*key_data.rsc_tsc),
1209                         };
1210
1211                         ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd);
1212                         if (ret)
1213                                 goto out;
1214                 }
1215
1216                 if (key_data.use_tkip) {
1217                         ret = iwl_dvm_send_cmd_pdu(priv,
1218                                                  REPLY_WOWLAN_TKIP_PARAMS,
1219                                                  CMD_SYNC, sizeof(tkip_cmd),
1220                                                  &tkip_cmd);
1221                         if (ret)
1222                                 goto out;
1223                 }
1224
1225                 if (priv->have_rekey_data) {
1226                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1227                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1228                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1229                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1230                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1231                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
1232
1233                         ret = iwl_dvm_send_cmd_pdu(priv,
1234                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
1235                                                  CMD_SYNC, sizeof(kek_kck_cmd),
1236                                                  &kek_kck_cmd);
1237                         if (ret)
1238                                 goto out;
1239                 }
1240         }
1241
1242         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, CMD_SYNC,
1243                                      sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1244         if (ret)
1245                 goto out;
1246
1247         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER,
1248                                  CMD_SYNC, sizeof(wakeup_filter_cmd),
1249                                  &wakeup_filter_cmd);
1250         if (ret)
1251                 goto out;
1252
1253         ret = iwlagn_send_patterns(priv, wowlan);
1254  out:
1255         kfree(key_data.rsc_tsc);
1256         return ret;
1257 }
1258 #endif
1259
1260 int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
1261 {
1262         if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
1263                 IWL_WARN(priv, "Not sending command - %s KILL\n",
1264                          iwl_is_rfkill(priv) ? "RF" : "CT");
1265                 return -EIO;
1266         }
1267
1268         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
1269                 IWL_ERR(priv, "Command %s failed: FW Error\n",
1270                         iwl_dvm_get_cmd_string(cmd->id));
1271                 return -EIO;
1272         }
1273
1274         /*
1275          * This can happen upon FW ASSERT: we clear the STATUS_FW_ERROR flag
1276          * in iwl_down but cancel the workers only later.
1277          */
1278         if (!priv->ucode_loaded) {
1279                 IWL_ERR(priv, "Fw not loaded - dropping CMD: %x\n", cmd->id);
1280                 return -EIO;
1281         }
1282
1283         /*
1284          * Synchronous commands from this op-mode must hold
1285          * the mutex, this ensures we don't try to send two
1286          * (or more) synchronous commands at a time.
1287          */
1288         if (!(cmd->flags & CMD_ASYNC))
1289                 lockdep_assert_held(&priv->mutex);
1290
1291         if (priv->ucode_owner == IWL_OWNERSHIP_TM &&
1292             !(cmd->flags & CMD_ON_DEMAND)) {
1293                 IWL_DEBUG_HC(priv, "tm own the uCode, no regular hcmd send\n");
1294                 return -EIO;
1295         }
1296
1297         return iwl_trans_send_cmd(priv->trans, cmd);
1298 }
1299
1300 int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id,
1301                          u32 flags, u16 len, const void *data)
1302 {
1303         struct iwl_host_cmd cmd = {
1304                 .id = id,
1305                 .len = { len, },
1306                 .data = { data, },
1307                 .flags = flags,
1308         };
1309
1310         return iwl_dvm_send_cmd(priv, &cmd);
1311 }