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

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This source file includes following definitions.
iwlagn_hw_valid_rtc_data_addr
iwlagn_send_tx_power
iwlagn_temperature
iwlagn_hwrate_to_mac80211_idx
iwlagn_manage_ibss_station
iwlagn_txfifo_flush
iwlagn_dev_txfifo_flush
iwlagn_send_advance_bt_config
iwlagn_bt_adjust_rssi_monitor
iwlagn_bt_traffic_is_sco
iwlagn_bt_traffic_change_work
iwlagn_bt_coex_rssi_monitor
iwlagn_print_uartmsg
iwlagn_set_kill_msk
iwlagn_fill_txpower_mode
iwlagn_bt_coex_profile_notif
iwlagn_bt_rx_handler_setup
iwlagn_bt_setup_deferred_work
iwlagn_bt_cancel_deferred_work
is_single_rx_stream
iwl_get_active_rx_chain_count
iwl_get_idle_rx_chain_count
iwl_count_chain_bitmap
iwlagn_set_rxon_chain
iwl_toggle_tx_ant
iwlagn_convert_p1k
iwlagn_wowlan_program_keys
iwlagn_send_patterns
iwlagn_suspend
iwl_dvm_send_cmd
iwl_dvm_send_cmd_pdu
   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /******************************************************************************
   3  *
   4  * Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved.
   5  *
   6  * Contact Information:
   7  *  Intel Linux Wireless <linuxwifi@intel.com>
   8  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
   9  *
  10  *****************************************************************************/
  11 #include <linux/etherdevice.h>
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/sched.h>
  15 #include <net/mac80211.h>
  16 
  17 #include "iwl-io.h"
  18 #include "iwl-agn-hw.h"
  19 #include "iwl-trans.h"
  20 #include "iwl-modparams.h"
  21 
  22 #include "dev.h"
  23 #include "agn.h"
  24 
  25 int iwlagn_hw_valid_rtc_data_addr(u32 addr)
  26 {
  27         return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) &&
  28                 (addr < IWLAGN_RTC_DATA_UPPER_BOUND);
  29 }
  30 
  31 int iwlagn_send_tx_power(struct iwl_priv *priv)
  32 {
  33         struct iwlagn_tx_power_dbm_cmd tx_power_cmd;
  34         u8 tx_ant_cfg_cmd;
  35 
  36         if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
  37                       "TX Power requested while scanning!\n"))
  38                 return -EAGAIN;
  39 
  40         /* half dBm need to multiply */
  41         tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
  42 
  43         if (tx_power_cmd.global_lmt > priv->nvm_data->max_tx_pwr_half_dbm) {
  44                 /*
  45                  * For the newer devices which using enhanced/extend tx power
  46                  * table in EEPROM, the format is in half dBm. driver need to
  47                  * convert to dBm format before report to mac80211.
  48                  * By doing so, there is a possibility of 1/2 dBm resolution
  49                  * lost. driver will perform "round-up" operation before
  50                  * reporting, but it will cause 1/2 dBm tx power over the
  51                  * regulatory limit. Perform the checking here, if the
  52                  * "tx_power_user_lmt" is higher than EEPROM value (in
  53                  * half-dBm format), lower the tx power based on EEPROM
  54                  */
  55                 tx_power_cmd.global_lmt =
  56                         priv->nvm_data->max_tx_pwr_half_dbm;
  57         }
  58         tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED;
  59         tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO;
  60 
  61         if (IWL_UCODE_API(priv->fw->ucode_ver) == 1)
  62                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1;
  63         else
  64                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
  65 
  66         return iwl_dvm_send_cmd_pdu(priv, tx_ant_cfg_cmd, 0,
  67                         sizeof(tx_power_cmd), &tx_power_cmd);
  68 }
  69 
  70 void iwlagn_temperature(struct iwl_priv *priv)
  71 {
  72         lockdep_assert_held(&priv->statistics.lock);
  73 
  74         /* store temperature from correct statistics (in Celsius) */
  75         priv->temperature = le32_to_cpu(priv->statistics.common.temperature);
  76         iwl_tt_handler(priv);
  77 }
  78 
  79 int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum nl80211_band band)
  80 {
  81         int idx = 0;
  82         int band_offset = 0;
  83 
  84         /* HT rate format: mac80211 wants an MCS number, which is just LSB */
  85         if (rate_n_flags & RATE_MCS_HT_MSK) {
  86                 idx = (rate_n_flags & 0xff);
  87                 return idx;
  88         /* Legacy rate format, search for match in table */
  89         } else {
  90                 if (band == NL80211_BAND_5GHZ)
  91                         band_offset = IWL_FIRST_OFDM_RATE;
  92                 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
  93                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
  94                                 return idx - band_offset;
  95         }
  96 
  97         return -1;
  98 }
  99 
 100 int iwlagn_manage_ibss_station(struct iwl_priv *priv,
 101                                struct ieee80211_vif *vif, bool add)
 102 {
 103         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
 104 
 105         if (add)
 106                 return iwlagn_add_bssid_station(priv, vif_priv->ctx,
 107                                                 vif->bss_conf.bssid,
 108                                                 &vif_priv->ibss_bssid_sta_id);
 109         return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
 110                                   vif->bss_conf.bssid);
 111 }
 112 
 113 /**
 114  * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode
 115  *
 116  * pre-requirements:
 117  *  1. acquire mutex before calling
 118  *  2. make sure rf is on and not in exit state
 119  */
 120 int iwlagn_txfifo_flush(struct iwl_priv *priv, u32 scd_q_msk)
 121 {
 122         struct iwl_txfifo_flush_cmd_v3 flush_cmd_v3 = {
 123                 .flush_control = cpu_to_le16(IWL_DROP_ALL),
 124         };
 125         struct iwl_txfifo_flush_cmd_v2 flush_cmd_v2 = {
 126                 .flush_control = cpu_to_le16(IWL_DROP_ALL),
 127         };
 128 
 129         u32 queue_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
 130                             IWL_SCD_BE_MSK | IWL_SCD_BK_MSK | IWL_SCD_MGMT_MSK;
 131 
 132         if ((priv->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
 133                 queue_control |= IWL_PAN_SCD_VO_MSK | IWL_PAN_SCD_VI_MSK |
 134                                  IWL_PAN_SCD_BE_MSK | IWL_PAN_SCD_BK_MSK |
 135                                  IWL_PAN_SCD_MGMT_MSK |
 136                                  IWL_PAN_SCD_MULTICAST_MSK;
 137 
 138         if (priv->nvm_data->sku_cap_11n_enable)
 139                 queue_control |= IWL_AGG_TX_QUEUE_MSK;
 140 
 141         if (scd_q_msk)
 142                 queue_control = scd_q_msk;
 143 
 144         IWL_DEBUG_INFO(priv, "queue control: 0x%x\n", queue_control);
 145         flush_cmd_v3.queue_control = cpu_to_le32(queue_control);
 146         flush_cmd_v2.queue_control = cpu_to_le16((u16)queue_control);
 147 
 148         if (IWL_UCODE_API(priv->fw->ucode_ver) > 2)
 149                 return iwl_dvm_send_cmd_pdu(priv, REPLY_TXFIFO_FLUSH, 0,
 150                                             sizeof(flush_cmd_v3),
 151                                             &flush_cmd_v3);
 152         return iwl_dvm_send_cmd_pdu(priv, REPLY_TXFIFO_FLUSH, 0,
 153                                     sizeof(flush_cmd_v2), &flush_cmd_v2);
 154 }
 155 
 156 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv)
 157 {
 158         mutex_lock(&priv->mutex);
 159         ieee80211_stop_queues(priv->hw);
 160         if (iwlagn_txfifo_flush(priv, 0)) {
 161                 IWL_ERR(priv, "flush request fail\n");
 162                 goto done;
 163         }
 164         IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
 165         iwl_trans_wait_tx_queues_empty(priv->trans, 0xffffffff);
 166 done:
 167         ieee80211_wake_queues(priv->hw);
 168         mutex_unlock(&priv->mutex);
 169 }
 170 
 171 /*
 172  * BT coex
 173  */
 174 /* Notmal TDM */
 175 static const __le32 iwlagn_def_3w_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 176         cpu_to_le32(0xaaaaaaaa),
 177         cpu_to_le32(0xaaaaaaaa),
 178         cpu_to_le32(0xaeaaaaaa),
 179         cpu_to_le32(0xaaaaaaaa),
 180         cpu_to_le32(0xcc00ff28),
 181         cpu_to_le32(0x0000aaaa),
 182         cpu_to_le32(0xcc00aaaa),
 183         cpu_to_le32(0x0000aaaa),
 184         cpu_to_le32(0xc0004000),
 185         cpu_to_le32(0x00004000),
 186         cpu_to_le32(0xf0005000),
 187         cpu_to_le32(0xf0005000),
 188 };
 189 
 190 /* Full concurrency */
 191 static const __le32 iwlagn_concurrent_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 192         cpu_to_le32(0xaaaaaaaa),
 193         cpu_to_le32(0xaaaaaaaa),
 194         cpu_to_le32(0xaaaaaaaa),
 195         cpu_to_le32(0xaaaaaaaa),
 196         cpu_to_le32(0xaaaaaaaa),
 197         cpu_to_le32(0xaaaaaaaa),
 198         cpu_to_le32(0xaaaaaaaa),
 199         cpu_to_le32(0xaaaaaaaa),
 200         cpu_to_le32(0x00000000),
 201         cpu_to_le32(0x00000000),
 202         cpu_to_le32(0x00000000),
 203         cpu_to_le32(0x00000000),
 204 };
 205 
 206 void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
 207 {
 208         struct iwl_basic_bt_cmd basic = {
 209                 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
 210                 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
 211                 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
 212                 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
 213         };
 214         struct iwl_bt_cmd_v1 bt_cmd_v1;
 215         struct iwl_bt_cmd_v2 bt_cmd_v2;
 216         int ret;
 217 
 218         BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
 219                         sizeof(basic.bt3_lookup_table));
 220 
 221         if (priv->lib->bt_params) {
 222                 /*
 223                  * newer generation of devices (2000 series and newer)
 224                  * use the version 2 of the bt command
 225                  * we need to make sure sending the host command
 226                  * with correct data structure to avoid uCode assert
 227                  */
 228                 if (priv->lib->bt_params->bt_session_2) {
 229                         bt_cmd_v2.prio_boost = cpu_to_le32(
 230                                 priv->lib->bt_params->bt_prio_boost);
 231                         bt_cmd_v2.tx_prio_boost = 0;
 232                         bt_cmd_v2.rx_prio_boost = 0;
 233                 } else {
 234                         /* older version only has 8 bits */
 235                         WARN_ON(priv->lib->bt_params->bt_prio_boost & ~0xFF);
 236                         bt_cmd_v1.prio_boost =
 237                                 priv->lib->bt_params->bt_prio_boost;
 238                         bt_cmd_v1.tx_prio_boost = 0;
 239                         bt_cmd_v1.rx_prio_boost = 0;
 240                 }
 241         } else {
 242                 IWL_ERR(priv, "failed to construct BT Coex Config\n");
 243                 return;
 244         }
 245 
 246         /*
 247          * Possible situations when BT needs to take over for receive,
 248          * at the same time where STA needs to response to AP's frame(s),
 249          * reduce the tx power of the required response frames, by that,
 250          * allow the concurrent BT receive & WiFi transmit
 251          * (BT - ANT A, WiFi -ANT B), without interference to one another
 252          *
 253          * Reduced tx power apply to control frames only (ACK/Back/CTS)
 254          * when indicated by the BT config command
 255          */
 256         basic.kill_ack_mask = priv->kill_ack_mask;
 257         basic.kill_cts_mask = priv->kill_cts_mask;
 258         if (priv->reduced_txpower)
 259                 basic.reduce_txpower = IWLAGN_BT_REDUCED_TX_PWR;
 260         basic.valid = priv->bt_valid;
 261 
 262         /*
 263          * Configure BT coex mode to "no coexistence" when the
 264          * user disabled BT coexistence, we have no interface
 265          * (might be in monitor mode), or the interface is in
 266          * IBSS mode (no proper uCode support for coex then).
 267          */
 268         if (!iwlwifi_mod_params.bt_coex_active ||
 269             priv->iw_mode == NL80211_IFTYPE_ADHOC) {
 270                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
 271         } else {
 272                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
 273                                         IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
 274 
 275                 if (!priv->bt_enable_pspoll)
 276                         basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 277                 else
 278                         basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 279 
 280                 if (priv->bt_ch_announce)
 281                         basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
 282                 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
 283         }
 284         priv->bt_enable_flag = basic.flags;
 285         if (priv->bt_full_concurrent)
 286                 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
 287                         sizeof(iwlagn_concurrent_lookup));
 288         else
 289                 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
 290                         sizeof(iwlagn_def_3w_lookup));
 291 
 292         IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
 293                        basic.flags ? "active" : "disabled",
 294                        priv->bt_full_concurrent ?
 295                        "full concurrency" : "3-wire");
 296 
 297         if (priv->lib->bt_params->bt_session_2) {
 298                 memcpy(&bt_cmd_v2.basic, &basic,
 299                         sizeof(basic));
 300                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 301                         0, sizeof(bt_cmd_v2), &bt_cmd_v2);
 302         } else {
 303                 memcpy(&bt_cmd_v1.basic, &basic,
 304                         sizeof(basic));
 305                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 306                         0, sizeof(bt_cmd_v1), &bt_cmd_v1);
 307         }
 308         if (ret)
 309                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 310 
 311 }
 312 
 313 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
 314 {
 315         struct iwl_rxon_context *ctx, *found_ctx = NULL;
 316         bool found_ap = false;
 317 
 318         lockdep_assert_held(&priv->mutex);
 319 
 320         /* Check whether AP or GO mode is active. */
 321         if (rssi_ena) {
 322                 for_each_context(priv, ctx) {
 323                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
 324                             iwl_is_associated_ctx(ctx)) {
 325                                 found_ap = true;
 326                                 break;
 327                         }
 328                 }
 329         }
 330 
 331         /*
 332          * If disable was received or If GO/AP mode, disable RSSI
 333          * measurements.
 334          */
 335         if (!rssi_ena || found_ap) {
 336                 if (priv->cur_rssi_ctx) {
 337                         ctx = priv->cur_rssi_ctx;
 338                         ieee80211_disable_rssi_reports(ctx->vif);
 339                         priv->cur_rssi_ctx = NULL;
 340                 }
 341                 return;
 342         }
 343 
 344         /*
 345          * If rssi measurements need to be enabled, consider all cases now.
 346          * Figure out how many contexts are active.
 347          */
 348         for_each_context(priv, ctx) {
 349                 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
 350                     iwl_is_associated_ctx(ctx)) {
 351                         found_ctx = ctx;
 352                         break;
 353                 }
 354         }
 355 
 356         /*
 357          * rssi monitor already enabled for the correct interface...nothing
 358          * to do.
 359          */
 360         if (found_ctx == priv->cur_rssi_ctx)
 361                 return;
 362 
 363         /*
 364          * Figure out if rssi monitor is currently enabled, and needs
 365          * to be changed. If rssi monitor is already enabled, disable
 366          * it first else just enable rssi measurements on the
 367          * interface found above.
 368          */
 369         if (priv->cur_rssi_ctx) {
 370                 ctx = priv->cur_rssi_ctx;
 371                 if (ctx->vif)
 372                         ieee80211_disable_rssi_reports(ctx->vif);
 373         }
 374 
 375         priv->cur_rssi_ctx = found_ctx;
 376 
 377         if (!found_ctx)
 378                 return;
 379 
 380         ieee80211_enable_rssi_reports(found_ctx->vif,
 381                         IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
 382                         IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
 383 }
 384 
 385 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
 386 {
 387         return (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 388                 BT_UART_MSG_FRAME3SCOESCO_POS;
 389 }
 390 
 391 static void iwlagn_bt_traffic_change_work(struct work_struct *work)
 392 {
 393         struct iwl_priv *priv =
 394                 container_of(work, struct iwl_priv, bt_traffic_change_work);
 395         struct iwl_rxon_context *ctx;
 396         int smps_request = -1;
 397 
 398         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 399                 /* bt coex disabled */
 400                 return;
 401         }
 402 
 403         /*
 404          * Note: bt_traffic_load can be overridden by scan complete and
 405          * coex profile notifications. Ignore that since only bad consequence
 406          * can be not matching debug print with actual state.
 407          */
 408         IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
 409                        priv->bt_traffic_load);
 410 
 411         switch (priv->bt_traffic_load) {
 412         case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
 413                 if (priv->bt_status)
 414                         smps_request = IEEE80211_SMPS_DYNAMIC;
 415                 else
 416                         smps_request = IEEE80211_SMPS_AUTOMATIC;
 417                 break;
 418         case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
 419                 smps_request = IEEE80211_SMPS_DYNAMIC;
 420                 break;
 421         case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
 422         case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
 423                 smps_request = IEEE80211_SMPS_STATIC;
 424                 break;
 425         default:
 426                 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
 427                         priv->bt_traffic_load);
 428                 break;
 429         }
 430 
 431         mutex_lock(&priv->mutex);
 432 
 433         /*
 434          * We can not send command to firmware while scanning. When the scan
 435          * complete we will schedule this work again. We do check with mutex
 436          * locked to prevent new scan request to arrive. We do not check
 437          * STATUS_SCANNING to avoid race when queue_work two times from
 438          * different notifications, but quit and not perform any work at all.
 439          */
 440         if (test_bit(STATUS_SCAN_HW, &priv->status))
 441                 goto out;
 442 
 443         iwl_update_chain_flags(priv);
 444 
 445         if (smps_request != -1) {
 446                 priv->current_ht_config.smps = smps_request;
 447                 for_each_context(priv, ctx) {
 448                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
 449                                 ieee80211_request_smps(ctx->vif, smps_request);
 450                 }
 451         }
 452 
 453         /*
 454          * Dynamic PS poll related functionality. Adjust RSSI measurements if
 455          * necessary.
 456          */
 457         iwlagn_bt_coex_rssi_monitor(priv);
 458 out:
 459         mutex_unlock(&priv->mutex);
 460 }
 461 
 462 /*
 463  * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
 464  * correct interface or disable it if this is the last interface to be
 465  * removed.
 466  */
 467 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
 468 {
 469         if (priv->bt_is_sco &&
 470             priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
 471                 iwlagn_bt_adjust_rssi_monitor(priv, true);
 472         else
 473                 iwlagn_bt_adjust_rssi_monitor(priv, false);
 474 }
 475 
 476 static void iwlagn_print_uartmsg(struct iwl_priv *priv,
 477                                 struct iwl_bt_uart_msg *uart_msg)
 478 {
 479         IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
 480                         "Update Req = 0x%X\n",
 481                 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
 482                         BT_UART_MSG_FRAME1MSGTYPE_POS,
 483                 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
 484                         BT_UART_MSG_FRAME1SSN_POS,
 485                 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
 486                         BT_UART_MSG_FRAME1UPDATEREQ_POS);
 487 
 488         IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
 489                         "Chl_SeqN = 0x%X, In band = 0x%X\n",
 490                 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
 491                         BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
 492                 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
 493                         BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
 494                 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
 495                         BT_UART_MSG_FRAME2CHLSEQN_POS,
 496                 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
 497                         BT_UART_MSG_FRAME2INBAND_POS);
 498 
 499         IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
 500                         "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X\n",
 501                 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 502                         BT_UART_MSG_FRAME3SCOESCO_POS,
 503                 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
 504                         BT_UART_MSG_FRAME3SNIFF_POS,
 505                 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
 506                         BT_UART_MSG_FRAME3A2DP_POS,
 507                 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
 508                         BT_UART_MSG_FRAME3ACL_POS,
 509                 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
 510                         BT_UART_MSG_FRAME3MASTER_POS,
 511                 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
 512                         BT_UART_MSG_FRAME3OBEX_POS);
 513 
 514         IWL_DEBUG_COEX(priv, "Idle duration = 0x%X\n",
 515                 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
 516                         BT_UART_MSG_FRAME4IDLEDURATION_POS);
 517 
 518         IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
 519                         "eSCO Retransmissions = 0x%X\n",
 520                 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
 521                         BT_UART_MSG_FRAME5TXACTIVITY_POS,
 522                 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
 523                         BT_UART_MSG_FRAME5RXACTIVITY_POS,
 524                 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
 525                         BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
 526 
 527         IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X\n",
 528                 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
 529                         BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
 530                 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
 531                         BT_UART_MSG_FRAME6DISCOVERABLE_POS);
 532 
 533         IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
 534                         "0x%X, Inquiry = 0x%X, Connectable = 0x%X\n",
 535                 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
 536                         BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
 537                 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
 538                         BT_UART_MSG_FRAME7PAGE_POS,
 539                 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
 540                         BT_UART_MSG_FRAME7INQUIRY_POS,
 541                 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
 542                         BT_UART_MSG_FRAME7CONNECTABLE_POS);
 543 }
 544 
 545 static bool iwlagn_set_kill_msk(struct iwl_priv *priv,
 546                                 struct iwl_bt_uart_msg *uart_msg)
 547 {
 548         bool need_update = false;
 549         u8 kill_msk = IWL_BT_KILL_REDUCE;
 550         static const __le32 bt_kill_ack_msg[3] = {
 551                 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
 552                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 553                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 554         static const __le32 bt_kill_cts_msg[3] = {
 555                 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
 556                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 557                 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 558 
 559         if (!priv->reduced_txpower)
 560                 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
 561                         ? IWL_BT_KILL_OVERRIDE : IWL_BT_KILL_DEFAULT;
 562         if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
 563             priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
 564                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
 565                 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
 566                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
 567                 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
 568                 need_update = true;
 569         }
 570         return need_update;
 571 }
 572 
 573 /*
 574  * Upon RSSI changes, sends a bt config command with following changes
 575  *  1. enable/disable "reduced control frames tx power
 576  *  2. update the "kill)ack_mask" and "kill_cts_mask"
 577  *
 578  * If "reduced tx power" is enabled, uCode shall
 579  *  1. ACK/Back/CTS rate shall reduced to 6Mbps
 580  *  2. not use duplciate 20/40MHz mode
 581  */
 582 static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv,
 583                                 struct iwl_bt_uart_msg *uart_msg)
 584 {
 585         bool need_update = false;
 586         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 587         int ave_rssi;
 588 
 589         if (!ctx->vif || (ctx->vif->type != NL80211_IFTYPE_STATION)) {
 590                 IWL_DEBUG_INFO(priv, "BSS ctx not active or not in sta mode\n");
 591                 return false;
 592         }
 593 
 594         ave_rssi = ieee80211_ave_rssi(ctx->vif);
 595         if (!ave_rssi) {
 596                 /* no rssi data, no changes to reduce tx power */
 597                 IWL_DEBUG_COEX(priv, "no rssi data available\n");
 598                 return need_update;
 599         }
 600         if (!priv->reduced_txpower &&
 601             !iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
 602             (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) &&
 603             (uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 604             BT_UART_MSG_FRAME3OBEX_MSK)) &&
 605             !(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 606             BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK))) {
 607                 /* enabling reduced tx power */
 608                 priv->reduced_txpower = true;
 609                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 610                 need_update = true;
 611         } else if (priv->reduced_txpower &&
 612                    (iwl_is_associated(priv, IWL_RXON_CTX_PAN) ||
 613                    (ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) ||
 614                    (uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 615                    BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK)) ||
 616                    !(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 617                    BT_UART_MSG_FRAME3OBEX_MSK)))) {
 618                 /* disable reduced tx power */
 619                 priv->reduced_txpower = false;
 620                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 621                 need_update = true;
 622         }
 623 
 624         return need_update;
 625 }
 626 
 627 static void iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
 628                                          struct iwl_rx_cmd_buffer *rxb)
 629 {
 630         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 631         struct iwl_bt_coex_profile_notif *coex = (void *)pkt->data;
 632         struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
 633 
 634         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 635                 /* bt coex disabled */
 636                 return;
 637         }
 638 
 639         IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
 640         IWL_DEBUG_COEX(priv, "    status: %d\n", coex->bt_status);
 641         IWL_DEBUG_COEX(priv, "    traffic load: %d\n", coex->bt_traffic_load);
 642         IWL_DEBUG_COEX(priv, "    CI compliance: %d\n",
 643                         coex->bt_ci_compliance);
 644         iwlagn_print_uartmsg(priv, uart_msg);
 645 
 646         priv->last_bt_traffic_load = priv->bt_traffic_load;
 647         priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
 648 
 649         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
 650                 if (priv->bt_status != coex->bt_status ||
 651                     priv->last_bt_traffic_load != coex->bt_traffic_load) {
 652                         if (coex->bt_status) {
 653                                 /* BT on */
 654                                 if (!priv->bt_ch_announce)
 655                                         priv->bt_traffic_load =
 656                                                 IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
 657                                 else
 658                                         priv->bt_traffic_load =
 659                                                 coex->bt_traffic_load;
 660                         } else {
 661                                 /* BT off */
 662                                 priv->bt_traffic_load =
 663                                         IWL_BT_COEX_TRAFFIC_LOAD_NONE;
 664                         }
 665                         priv->bt_status = coex->bt_status;
 666                         queue_work(priv->workqueue,
 667                                    &priv->bt_traffic_change_work);
 668                 }
 669         }
 670 
 671         /* schedule to send runtime bt_config */
 672         /* check reduce power before change ack/cts kill mask */
 673         if (iwlagn_fill_txpower_mode(priv, uart_msg) ||
 674             iwlagn_set_kill_msk(priv, uart_msg))
 675                 queue_work(priv->workqueue, &priv->bt_runtime_config);
 676 
 677 
 678         /* FIXME: based on notification, adjust the prio_boost */
 679 
 680         priv->bt_ci_compliance = coex->bt_ci_compliance;
 681 }
 682 
 683 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
 684 {
 685         priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
 686                 iwlagn_bt_coex_profile_notif;
 687 }
 688 
 689 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
 690 {
 691         INIT_WORK(&priv->bt_traffic_change_work,
 692                   iwlagn_bt_traffic_change_work);
 693 }
 694 
 695 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
 696 {
 697         cancel_work_sync(&priv->bt_traffic_change_work);
 698 }
 699 
 700 static bool is_single_rx_stream(struct iwl_priv *priv)
 701 {
 702         return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
 703                priv->current_ht_config.single_chain_sufficient;
 704 }
 705 
 706 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 707 #define IWL_NUM_RX_CHAINS_SINGLE        2
 708 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 709 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 710 
 711 /*
 712  * Determine how many receiver/antenna chains to use.
 713  *
 714  * More provides better reception via diversity.  Fewer saves power
 715  * at the expense of throughput, but only when not in powersave to
 716  * start with.
 717  *
 718  * MIMO (dual stream) requires at least 2, but works better with 3.
 719  * This does not determine *which* chains to use, just how many.
 720  */
 721 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 722 {
 723         if (priv->lib->bt_params &&
 724             priv->lib->bt_params->advanced_bt_coexist &&
 725             (priv->bt_full_concurrent ||
 726              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 727                 /*
 728                  * only use chain 'A' in bt high traffic load or
 729                  * full concurrency mode
 730                  */
 731                 return IWL_NUM_RX_CHAINS_SINGLE;
 732         }
 733         /* # of Rx chains to use when expecting MIMO. */
 734         if (is_single_rx_stream(priv))
 735                 return IWL_NUM_RX_CHAINS_SINGLE;
 736         else
 737                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 738 }
 739 
 740 /*
 741  * When we are in power saving mode, unless device support spatial
 742  * multiplexing power save, use the active count for rx chain count.
 743  */
 744 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 745 {
 746         /* # Rx chains when idling, depending on SMPS mode */
 747         switch (priv->current_ht_config.smps) {
 748         case IEEE80211_SMPS_STATIC:
 749         case IEEE80211_SMPS_DYNAMIC:
 750                 return IWL_NUM_IDLE_CHAINS_SINGLE;
 751         case IEEE80211_SMPS_AUTOMATIC:
 752         case IEEE80211_SMPS_OFF:
 753                 return active_cnt;
 754         default:
 755                 WARN(1, "invalid SMPS mode %d",
 756                      priv->current_ht_config.smps);
 757                 return active_cnt;
 758         }
 759 }
 760 
 761 /* up to 4 chains */
 762 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
 763 {
 764         u8 res;
 765         res = (chain_bitmap & BIT(0)) >> 0;
 766         res += (chain_bitmap & BIT(1)) >> 1;
 767         res += (chain_bitmap & BIT(2)) >> 2;
 768         res += (chain_bitmap & BIT(3)) >> 3;
 769         return res;
 770 }
 771 
 772 /**
 773  * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
 774  *
 775  * Selects how many and which Rx receivers/antennas/chains to use.
 776  * This should not be used for scan command ... it puts data in wrong place.
 777  */
 778 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 779 {
 780         bool is_single = is_single_rx_stream(priv);
 781         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 782         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
 783         u32 active_chains;
 784         u16 rx_chain;
 785 
 786         /* Tell uCode which antennas are actually connected.
 787          * Before first association, we assume all antennas are connected.
 788          * Just after first association, iwl_chain_noise_calibration()
 789          *    checks which antennas actually *are* connected. */
 790         if (priv->chain_noise_data.active_chains)
 791                 active_chains = priv->chain_noise_data.active_chains;
 792         else
 793                 active_chains = priv->nvm_data->valid_rx_ant;
 794 
 795         if (priv->lib->bt_params &&
 796             priv->lib->bt_params->advanced_bt_coexist &&
 797             (priv->bt_full_concurrent ||
 798              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 799                 /*
 800                  * only use chain 'A' in bt high traffic load or
 801                  * full concurrency mode
 802                  */
 803                 active_chains = first_antenna(active_chains);
 804         }
 805 
 806         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
 807 
 808         /* How many receivers should we use? */
 809         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
 810         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
 811 
 812 
 813         /* correct rx chain count according hw settings
 814          * and chain noise calibration
 815          */
 816         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
 817         if (valid_rx_cnt < active_rx_cnt)
 818                 active_rx_cnt = valid_rx_cnt;
 819 
 820         if (valid_rx_cnt < idle_rx_cnt)
 821                 idle_rx_cnt = valid_rx_cnt;
 822 
 823         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
 824         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
 825 
 826         ctx->staging.rx_chain = cpu_to_le16(rx_chain);
 827 
 828         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
 829                 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
 830         else
 831                 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
 832 
 833         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
 834                         ctx->staging.rx_chain,
 835                         active_rx_cnt, idle_rx_cnt);
 836 
 837         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
 838                 active_rx_cnt < idle_rx_cnt);
 839 }
 840 
 841 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
 842 {
 843         int i;
 844         u8 ind = ant;
 845 
 846         if (priv->band == NL80211_BAND_2GHZ &&
 847             priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
 848                 return 0;
 849 
 850         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 851                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 852                 if (valid & BIT(ind))
 853                         return ind;
 854         }
 855         return ant;
 856 }
 857 
 858 #ifdef CONFIG_PM_SLEEP
 859 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
 860 {
 861         int i;
 862 
 863         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
 864                 out[i] = cpu_to_le16(p1k[i]);
 865 }
 866 
 867 struct wowlan_key_data {
 868         struct iwl_rxon_context *ctx;
 869         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
 870         struct iwlagn_wowlan_tkip_params_cmd *tkip;
 871         const u8 *bssid;
 872         bool error, use_rsc_tsc, use_tkip;
 873 };
 874 
 875 
 876 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
 877                                struct ieee80211_vif *vif,
 878                                struct ieee80211_sta *sta,
 879                                struct ieee80211_key_conf *key,
 880                                void *_data)
 881 {
 882         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 883         struct wowlan_key_data *data = _data;
 884         struct iwl_rxon_context *ctx = data->ctx;
 885         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
 886         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 887         struct iwlagn_p1k_cache *rx_p1ks;
 888         u8 *rx_mic_key;
 889         struct ieee80211_key_seq seq;
 890         u32 cur_rx_iv32 = 0;
 891         u16 p1k[IWLAGN_P1K_SIZE];
 892         int ret, i;
 893 
 894         mutex_lock(&priv->mutex);
 895 
 896         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 897              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 898              !sta && !ctx->key_mapping_keys)
 899                 ret = iwl_set_default_wep_key(priv, ctx, key);
 900         else
 901                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
 902 
 903         if (ret) {
 904                 IWL_ERR(priv, "Error setting key during suspend!\n");
 905                 data->error = true;
 906         }
 907 
 908         switch (key->cipher) {
 909         case WLAN_CIPHER_SUITE_TKIP:
 910                 if (sta) {
 911                         u64 pn64;
 912 
 913                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
 914                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
 915 
 916                         rx_p1ks = data->tkip->rx_uni;
 917 
 918                         pn64 = atomic64_read(&key->tx_pn);
 919                         tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
 920                         tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
 921 
 922                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
 923                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
 924 
 925                         memcpy(data->tkip->mic_keys.tx,
 926                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
 927                                IWLAGN_MIC_KEY_SIZE);
 928 
 929                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
 930                 } else {
 931                         tkip_sc =
 932                                 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
 933                         rx_p1ks = data->tkip->rx_multi;
 934                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
 935                 }
 936 
 937                 /*
 938                  * For non-QoS this relies on the fact that both the uCode and
 939                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 940                  * for checking the IV in the frames.
 941                  */
 942                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
 943                         ieee80211_get_key_rx_seq(key, i, &seq);
 944                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
 945                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
 946                         /* wrapping isn't allowed, AP must rekey */
 947                         if (seq.tkip.iv32 > cur_rx_iv32)
 948                                 cur_rx_iv32 = seq.tkip.iv32;
 949                 }
 950 
 951                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
 952                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
 953                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
 954                                           cur_rx_iv32 + 1, p1k);
 955                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
 956 
 957                 memcpy(rx_mic_key,
 958                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
 959                        IWLAGN_MIC_KEY_SIZE);
 960 
 961                 data->use_tkip = true;
 962                 data->use_rsc_tsc = true;
 963                 break;
 964         case WLAN_CIPHER_SUITE_CCMP:
 965                 if (sta) {
 966                         u64 pn64;
 967 
 968                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
 969                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
 970 
 971                         pn64 = atomic64_read(&key->tx_pn);
 972                         aes_tx_sc->pn = cpu_to_le64(pn64);
 973                 } else
 974                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
 975 
 976                 /*
 977                  * For non-QoS this relies on the fact that both the uCode and
 978                  * mac80211 use TID 0 for checking the IV in the frames.
 979                  */
 980                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
 981                         u8 *pn = seq.ccmp.pn;
 982 
 983                         ieee80211_get_key_rx_seq(key, i, &seq);
 984                         aes_sc[i].pn = cpu_to_le64(
 985                                         (u64)pn[5] |
 986                                         ((u64)pn[4] << 8) |
 987                                         ((u64)pn[3] << 16) |
 988                                         ((u64)pn[2] << 24) |
 989                                         ((u64)pn[1] << 32) |
 990                                         ((u64)pn[0] << 40));
 991                 }
 992                 data->use_rsc_tsc = true;
 993                 break;
 994         }
 995 
 996         mutex_unlock(&priv->mutex);
 997 }
 998 
 999 int iwlagn_send_patterns(struct iwl_priv *priv,
1000                         struct cfg80211_wowlan *wowlan)
1001 {
1002         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1003         struct iwl_host_cmd cmd = {
1004                 .id = REPLY_WOWLAN_PATTERNS,
1005                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1006         };
1007         int i, err;
1008 
1009         if (!wowlan->n_patterns)
1010                 return 0;
1011 
1012         cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
1013 
1014         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1015         if (!pattern_cmd)
1016                 return -ENOMEM;
1017 
1018         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1019 
1020         for (i = 0; i < wowlan->n_patterns; i++) {
1021                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1022 
1023                 memcpy(&pattern_cmd->patterns[i].mask,
1024                         wowlan->patterns[i].mask, mask_len);
1025                 memcpy(&pattern_cmd->patterns[i].pattern,
1026                         wowlan->patterns[i].pattern,
1027                         wowlan->patterns[i].pattern_len);
1028                 pattern_cmd->patterns[i].mask_size = mask_len;
1029                 pattern_cmd->patterns[i].pattern_size =
1030                         wowlan->patterns[i].pattern_len;
1031         }
1032 
1033         cmd.data[0] = pattern_cmd;
1034         err = iwl_dvm_send_cmd(priv, &cmd);
1035         kfree(pattern_cmd);
1036         return err;
1037 }
1038 
1039 int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan)
1040 {
1041         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
1042         struct iwl_rxon_cmd rxon;
1043         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1044         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
1045         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
1046         struct iwlagn_d3_config_cmd d3_cfg_cmd = {
1047                 /*
1048                  * Program the minimum sleep time to 10 seconds, as many
1049                  * platforms have issues processing a wakeup signal while
1050                  * still being in the process of suspending.
1051                  */
1052                 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1053         };
1054         struct wowlan_key_data key_data = {
1055                 .ctx = ctx,
1056                 .bssid = ctx->active.bssid_addr,
1057                 .use_rsc_tsc = false,
1058                 .tkip = &tkip_cmd,
1059                 .use_tkip = false,
1060         };
1061         int ret, i;
1062         u16 seq;
1063 
1064         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1065         if (!key_data.rsc_tsc)
1066                 return -ENOMEM;
1067 
1068         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1069 
1070         /*
1071          * We know the last used seqno, and the uCode expects to know that
1072          * one, it will increment before TX.
1073          */
1074         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1075         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1076 
1077         /*
1078          * For QoS counters, we store the one to use next, so subtract 0x10
1079          * since the uCode will add 0x10 before using the value.
1080          */
1081         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1082                 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1083                 seq -= 0x10;
1084                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1085         }
1086 
1087         if (wowlan->disconnect)
1088                 wakeup_filter_cmd.enabled |=
1089                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1090                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1091         if (wowlan->magic_pkt)
1092                 wakeup_filter_cmd.enabled |=
1093                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1094         if (wowlan->gtk_rekey_failure)
1095                 wakeup_filter_cmd.enabled |=
1096                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1097         if (wowlan->eap_identity_req)
1098                 wakeup_filter_cmd.enabled |=
1099                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1100         if (wowlan->four_way_handshake)
1101                 wakeup_filter_cmd.enabled |=
1102                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1103         if (wowlan->n_patterns)
1104                 wakeup_filter_cmd.enabled |=
1105                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1106 
1107         if (wowlan->rfkill_release)
1108                 d3_cfg_cmd.wakeup_flags |=
1109                         cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1110 
1111         iwl_scan_cancel_timeout(priv, 200);
1112 
1113         memcpy(&rxon, &ctx->active, sizeof(rxon));
1114 
1115         priv->ucode_loaded = false;
1116         iwl_trans_stop_device(priv->trans);
1117         ret = iwl_trans_start_hw(priv->trans);
1118         if (ret)
1119                 goto out;
1120 
1121         priv->wowlan = true;
1122 
1123         ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
1124         if (ret)
1125                 goto out;
1126 
1127         /* now configure WoWLAN ucode */
1128         ret = iwl_alive_start(priv);
1129         if (ret)
1130                 goto out;
1131 
1132         memcpy(&ctx->staging, &rxon, sizeof(rxon));
1133         ret = iwlagn_commit_rxon(priv, ctx);
1134         if (ret)
1135                 goto out;
1136 
1137         ret = iwl_power_update_mode(priv, true);
1138         if (ret)
1139                 goto out;
1140 
1141         if (!iwlwifi_mod_params.swcrypto) {
1142                 /* mark all keys clear */
1143                 priv->ucode_key_table = 0;
1144                 ctx->key_mapping_keys = 0;
1145 
1146                 /*
1147                  * This needs to be unlocked due to lock ordering
1148                  * constraints. Since we're in the suspend path
1149                  * that isn't really a problem though.
1150                  */
1151                 mutex_unlock(&priv->mutex);
1152                 ieee80211_iter_keys(priv->hw, ctx->vif,
1153                                     iwlagn_wowlan_program_keys,
1154                                     &key_data);
1155                 mutex_lock(&priv->mutex);
1156                 if (key_data.error) {
1157                         ret = -EIO;
1158                         goto out;
1159                 }
1160 
1161                 if (key_data.use_rsc_tsc) {
1162                         struct iwl_host_cmd rsc_tsc_cmd = {
1163                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1164                                 .data[0] = key_data.rsc_tsc,
1165                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1166                                 .len[0] = sizeof(*key_data.rsc_tsc),
1167                         };
1168 
1169                         ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd);
1170                         if (ret)
1171                                 goto out;
1172                 }
1173 
1174                 if (key_data.use_tkip) {
1175                         ret = iwl_dvm_send_cmd_pdu(priv,
1176                                                  REPLY_WOWLAN_TKIP_PARAMS,
1177                                                  0, sizeof(tkip_cmd),
1178                                                  &tkip_cmd);
1179                         if (ret)
1180                                 goto out;
1181                 }
1182 
1183                 if (priv->have_rekey_data) {
1184                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1185                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1186                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1187                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1188                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1189                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
1190 
1191                         ret = iwl_dvm_send_cmd_pdu(priv,
1192                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
1193                                                  0, sizeof(kek_kck_cmd),
1194                                                  &kek_kck_cmd);
1195                         if (ret)
1196                                 goto out;
1197                 }
1198         }
1199 
1200         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, 0,
1201                                      sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1202         if (ret)
1203                 goto out;
1204 
1205         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER,
1206                                  0, sizeof(wakeup_filter_cmd),
1207                                  &wakeup_filter_cmd);
1208         if (ret)
1209                 goto out;
1210 
1211         ret = iwlagn_send_patterns(priv, wowlan);
1212  out:
1213         kfree(key_data.rsc_tsc);
1214         return ret;
1215 }
1216 #endif
1217 
1218 int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
1219 {
1220         if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
1221                 IWL_WARN(priv, "Not sending command - %s KILL\n",
1222                          iwl_is_rfkill(priv) ? "RF" : "CT");
1223                 return -EIO;
1224         }
1225 
1226         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
1227                 IWL_ERR(priv, "Command %s failed: FW Error\n",
1228                         iwl_get_cmd_string(priv->trans, cmd->id));
1229                 return -EIO;
1230         }
1231 
1232         /*
1233          * This can happen upon FW ASSERT: we clear the STATUS_FW_ERROR flag
1234          * in iwl_down but cancel the workers only later.
1235          */
1236         if (!priv->ucode_loaded) {
1237                 IWL_ERR(priv, "Fw not loaded - dropping CMD: %x\n", cmd->id);
1238                 return -EIO;
1239         }
1240 
1241         /*
1242          * Synchronous commands from this op-mode must hold
1243          * the mutex, this ensures we don't try to send two
1244          * (or more) synchronous commands at a time.
1245          */
1246         if (!(cmd->flags & CMD_ASYNC))
1247                 lockdep_assert_held(&priv->mutex);
1248 
1249         return iwl_trans_send_cmd(priv->trans, cmd);
1250 }
1251 
1252 int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id,
1253                          u32 flags, u16 len, const void *data)
1254 {
1255         struct iwl_host_cmd cmd = {
1256                 .id = id,
1257                 .len = { len, },
1258                 .data = { data, },
1259                 .flags = flags,
1260         };
1261 
1262         return iwl_dvm_send_cmd(priv, &cmd);
1263 }
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/net/wireless/intel/iwlwifi/dvm/lib.c

DEFINITIONS
