drivers/net/wireless/iwlwifi/iwl-agn-lib.c

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 - 2012 Intel Corporation. All rights reserved.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of version 2 of the GNU General Public License as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  19  * USA
  20  *
  21  * The full GNU General Public License is included in this distribution
  22  * in the file called LICENSE.GPL.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29 #include <linux/etherdevice.h>
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/sched.h>
  34
  35 #include "iwl-dev.h"
  36 #include "iwl-io.h"
  37 #include "iwl-agn-hw.h"
  38 #include "iwl-agn.h"
  39 #include "iwl-trans.h"
  40 #include "iwl-modparams.h"
  41
  42 int iwlagn_hw_valid_rtc_data_addr(u32 addr)
  43 {
  44         return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) &&
  45                 (addr < IWLAGN_RTC_DATA_UPPER_BOUND);
  46 }
  47
  48 int iwlagn_send_tx_power(struct iwl_priv *priv)
  49 {
  50         struct iwlagn_tx_power_dbm_cmd tx_power_cmd;
  51         u8 tx_ant_cfg_cmd;
  52
  53         if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
  54                       "TX Power requested while scanning!\n"))
  55                 return -EAGAIN;
  56
  57         /* half dBm need to multiply */
  58         tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
  59
  60         if (priv->tx_power_lmt_in_half_dbm &&
  61             priv->tx_power_lmt_in_half_dbm < tx_power_cmd.global_lmt) {
  62                 /*
  63                  * For the newer devices which using enhanced/extend tx power
  64                  * table in EEPROM, the format is in half dBm. driver need to
  65                  * convert to dBm format before report to mac80211.
  66                  * By doing so, there is a possibility of 1/2 dBm resolution
  67                  * lost. driver will perform "round-up" operation before
  68                  * reporting, but it will cause 1/2 dBm tx power over the
  69                  * regulatory limit. Perform the checking here, if the
  70                  * "tx_power_user_lmt" is higher than EEPROM value (in
  71                  * half-dBm format), lower the tx power based on EEPROM
  72                  */
  73                 tx_power_cmd.global_lmt = priv->tx_power_lmt_in_half_dbm;
  74         }
  75         tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED;
  76         tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO;
  77
  78         if (IWL_UCODE_API(priv->fw->ucode_ver) == 1)
  79                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1;
  80         else
  81                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
  82
  83         return iwl_dvm_send_cmd_pdu(priv, tx_ant_cfg_cmd, CMD_SYNC,
  84                         sizeof(tx_power_cmd), &tx_power_cmd);
  85 }
  86
  87 void iwlagn_temperature(struct iwl_priv *priv)
  88 {
  89         lockdep_assert_held(&priv->statistics.lock);
  90
  91         /* store temperature from correct statistics (in Celsius) */
  92         priv->temperature = le32_to_cpu(priv->statistics.common.temperature);
  93         iwl_tt_handler(priv);
  94 }
  95
  96 int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
  97 {
  98         int idx = 0;
  99         int band_offset = 0;
 100
 101         /* HT rate format: mac80211 wants an MCS number, which is just LSB */
 102         if (rate_n_flags & RATE_MCS_HT_MSK) {
 103                 idx = (rate_n_flags & 0xff);
 104                 return idx;
 105         /* Legacy rate format, search for match in table */
 106         } else {
 107                 if (band == IEEE80211_BAND_5GHZ)
 108                         band_offset = IWL_FIRST_OFDM_RATE;
 109                 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
 110                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 111                                 return idx - band_offset;
 112         }
 113
 114         return -1;
 115 }
 116
 117 int iwlagn_manage_ibss_station(struct iwl_priv *priv,
 118                                struct ieee80211_vif *vif, bool add)
 119 {
 120         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
 121
 122         if (add)
 123                 return iwlagn_add_bssid_station(priv, vif_priv->ctx,
 124                                                 vif->bss_conf.bssid,
 125                                                 &vif_priv->ibss_bssid_sta_id);
 126         return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
 127                                   vif->bss_conf.bssid);
 128 }
 129
 130 /**
 131  * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode
 132  *
 133  * pre-requirements:
 134  *  1. acquire mutex before calling
 135  *  2. make sure rf is on and not in exit state
 136  */
 137 int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
 138 {
 139         struct iwl_txfifo_flush_cmd flush_cmd;
 140         struct iwl_host_cmd cmd = {
 141                 .id = REPLY_TXFIFO_FLUSH,
 142                 .len = { sizeof(struct iwl_txfifo_flush_cmd), },
 143                 .flags = CMD_SYNC,
 144                 .data = { &flush_cmd, },
 145         };
 146
 147         might_sleep();
 148
 149         memset(&flush_cmd, 0, sizeof(flush_cmd));
 150         if (flush_control & BIT(IWL_RXON_CTX_BSS))
 151                 flush_cmd.fifo_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 ((flush_control & BIT(IWL_RXON_CTX_PAN)) &&
 155             (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
 156                 flush_cmd.fifo_control |= IWL_PAN_SCD_VO_MSK |
 157                                 IWL_PAN_SCD_VI_MSK | IWL_PAN_SCD_BE_MSK |
 158                                 IWL_PAN_SCD_BK_MSK | IWL_PAN_SCD_MGMT_MSK |
 159                                 IWL_PAN_SCD_MULTICAST_MSK;
 160
 161         if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
 162                 flush_cmd.fifo_control |= IWL_AGG_TX_QUEUE_MSK;
 163
 164         IWL_DEBUG_INFO(priv, "fifo queue control: 0X%x\n",
 165                        flush_cmd.fifo_control);
 166         flush_cmd.flush_control = cpu_to_le16(flush_control);
 167
 168         return iwl_dvm_send_cmd(priv, &cmd);
 169 }
 170
 171 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
 172 {
 173         mutex_lock(&priv->mutex);
 174         ieee80211_stop_queues(priv->hw);
 175         if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
 176                 IWL_ERR(priv, "flush request fail\n");
 177                 goto done;
 178         }
 179         IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
 180         iwl_trans_wait_tx_queue_empty(priv->trans);
 181 done:
 182         ieee80211_wake_queues(priv->hw);
 183         mutex_unlock(&priv->mutex);
 184 }
 185
 186 /*
 187  * BT coex
 188  */
 189 static const __le32 iwlagn_def_3w_lookup[12] = {
 190         cpu_to_le32(0xaaaaaaaa),
 191         cpu_to_le32(0xaaaaaaaa),
 192         cpu_to_le32(0xaeaaaaaa),
 193         cpu_to_le32(0xaaaaaaaa),
 194         cpu_to_le32(0xcc00ff28),
 195         cpu_to_le32(0x0000aaaa),
 196         cpu_to_le32(0xcc00aaaa),
 197         cpu_to_le32(0x0000aaaa),
 198         cpu_to_le32(0xc0004000),
 199         cpu_to_le32(0x00004000),
 200         cpu_to_le32(0xf0005000),
 201         cpu_to_le32(0xf0005000),
 202 };
 203
 204 static const __le32 iwlagn_concurrent_lookup[12] = {
 205         cpu_to_le32(0xaaaaaaaa),
 206         cpu_to_le32(0xaaaaaaaa),
 207         cpu_to_le32(0xaaaaaaaa),
 208         cpu_to_le32(0xaaaaaaaa),
 209         cpu_to_le32(0xaaaaaaaa),
 210         cpu_to_le32(0xaaaaaaaa),
 211         cpu_to_le32(0xaaaaaaaa),
 212         cpu_to_le32(0xaaaaaaaa),
 213         cpu_to_le32(0x00000000),
 214         cpu_to_le32(0x00000000),
 215         cpu_to_le32(0x00000000),
 216         cpu_to_le32(0x00000000),
 217 };
 218
 219 void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
 220 {
 221         struct iwl_basic_bt_cmd basic = {
 222                 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
 223                 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
 224                 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
 225                 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
 226         };
 227         struct iwl_bt_cmd_v1 bt_cmd_v1;
 228         struct iwl_bt_cmd_v2 bt_cmd_v2;
 229         int ret;
 230
 231         BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
 232                         sizeof(basic.bt3_lookup_table));
 233
 234         if (priv->cfg->bt_params) {
 235                 /*
 236                  * newer generation of devices (2000 series and newer)
 237                  * use the version 2 of the bt command
 238                  * we need to make sure sending the host command
 239                  * with correct data structure to avoid uCode assert
 240                  */
 241                 if (priv->cfg->bt_params->bt_session_2) {
 242                         bt_cmd_v2.prio_boost = cpu_to_le32(
 243                                 priv->cfg->bt_params->bt_prio_boost);
 244                         bt_cmd_v2.tx_prio_boost = 0;
 245                         bt_cmd_v2.rx_prio_boost = 0;
 246                 } else {
 247                         bt_cmd_v1.prio_boost =
 248                                 priv->cfg->bt_params->bt_prio_boost;
 249                         bt_cmd_v1.tx_prio_boost = 0;
 250                         bt_cmd_v1.rx_prio_boost = 0;
 251                 }
 252         } else {
 253                 IWL_ERR(priv, "failed to construct BT Coex Config\n");
 254                 return;
 255         }
 256
 257         basic.kill_ack_mask = priv->kill_ack_mask;
 258         basic.kill_cts_mask = priv->kill_cts_mask;
 259         basic.valid = priv->bt_valid;
 260
 261         /*
 262          * Configure BT coex mode to "no coexistence" when the
 263          * user disabled BT coexistence, we have no interface
 264          * (might be in monitor mode), or the interface is in
 265          * IBSS mode (no proper uCode support for coex then).
 266          */
 267         if (!iwlwifi_mod_params.bt_coex_active ||
 268             priv->iw_mode == NL80211_IFTYPE_ADHOC) {
 269                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
 270         } else {
 271                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
 272                                         IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
 273
 274                 if (!priv->bt_enable_pspoll)
 275                         basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 276                 else
 277                         basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 278
 279                 if (priv->bt_ch_announce)
 280                         basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
 281                 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
 282         }
 283         priv->bt_enable_flag = basic.flags;
 284         if (priv->bt_full_concurrent)
 285                 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
 286                         sizeof(iwlagn_concurrent_lookup));
 287         else
 288                 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
 289                         sizeof(iwlagn_def_3w_lookup));
 290
 291         IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
 292                        basic.flags ? "active" : "disabled",
 293                        priv->bt_full_concurrent ?
 294                        "full concurrency" : "3-wire");
 295
 296         if (priv->cfg->bt_params->bt_session_2) {
 297                 memcpy(&bt_cmd_v2.basic, &basic,
 298                         sizeof(basic));
 299                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 300                         CMD_SYNC, sizeof(bt_cmd_v2), &bt_cmd_v2);
 301         } else {
 302                 memcpy(&bt_cmd_v1.basic, &basic,
 303                         sizeof(basic));
 304                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 305                         CMD_SYNC, sizeof(bt_cmd_v1), &bt_cmd_v1);
 306         }
 307         if (ret)
 308                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 309
 310 }
 311
 312 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
 313 {
 314         struct iwl_rxon_context *ctx, *found_ctx = NULL;
 315         bool found_ap = false;
 316
 317         lockdep_assert_held(&priv->mutex);
 318
 319         /* Check whether AP or GO mode is active. */
 320         if (rssi_ena) {
 321                 for_each_context(priv, ctx) {
 322                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
 323                             iwl_is_associated_ctx(ctx)) {
 324                                 found_ap = true;
 325                                 break;
 326                         }
 327                 }
 328         }
 329
 330         /*
 331          * If disable was received or If GO/AP mode, disable RSSI
 332          * measurements.
 333          */
 334         if (!rssi_ena || found_ap) {
 335                 if (priv->cur_rssi_ctx) {
 336                         ctx = priv->cur_rssi_ctx;
 337                         ieee80211_disable_rssi_reports(ctx->vif);
 338                         priv->cur_rssi_ctx = NULL;
 339                 }
 340                 return;
 341         }
 342
 343         /*
 344          * If rssi measurements need to be enabled, consider all cases now.
 345          * Figure out how many contexts are active.
 346          */
 347         for_each_context(priv, ctx) {
 348                 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
 349                     iwl_is_associated_ctx(ctx)) {
 350                         found_ctx = ctx;
 351                         break;
 352                 }
 353         }
 354
 355         /*
 356          * rssi monitor already enabled for the correct interface...nothing
 357          * to do.
 358          */
 359         if (found_ctx == priv->cur_rssi_ctx)
 360                 return;
 361
 362         /*
 363          * Figure out if rssi monitor is currently enabled, and needs
 364          * to be changed. If rssi monitor is already enabled, disable
 365          * it first else just enable rssi measurements on the
 366          * interface found above.
 367          */
 368         if (priv->cur_rssi_ctx) {
 369                 ctx = priv->cur_rssi_ctx;
 370                 if (ctx->vif)
 371                         ieee80211_disable_rssi_reports(ctx->vif);
 372         }
 373
 374         priv->cur_rssi_ctx = found_ctx;
 375
 376         if (!found_ctx)
 377                 return;
 378
 379         ieee80211_enable_rssi_reports(found_ctx->vif,
 380                         IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
 381                         IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
 382 }
 383
 384 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
 385 {
 386         return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >>
 387                         BT_UART_MSG_FRAME3SCOESCO_POS;
 388 }
 389
 390 static void iwlagn_bt_traffic_change_work(struct work_struct *work)
 391 {
 392         struct iwl_priv *priv =
 393                 container_of(work, struct iwl_priv, bt_traffic_change_work);
 394         struct iwl_rxon_context *ctx;
 395         int smps_request = -1;
 396
 397         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 398                 /* bt coex disabled */
 399                 return;
 400         }
 401
 402         /*
 403          * Note: bt_traffic_load can be overridden by scan complete and
 404          * coex profile notifications. Ignore that since only bad consequence
 405          * can be not matching debug print with actual state.
 406          */
 407         IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
 408                        priv->bt_traffic_load);
 409
 410         switch (priv->bt_traffic_load) {
 411         case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
 412                 if (priv->bt_status)
 413                         smps_request = IEEE80211_SMPS_DYNAMIC;
 414                 else
 415                         smps_request = IEEE80211_SMPS_AUTOMATIC;
 416                 break;
 417         case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
 418                 smps_request = IEEE80211_SMPS_DYNAMIC;
 419                 break;
 420         case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
 421         case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
 422                 smps_request = IEEE80211_SMPS_STATIC;
 423                 break;
 424         default:
 425                 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
 426                         priv->bt_traffic_load);
 427                 break;
 428         }
 429
 430         mutex_lock(&priv->mutex);
 431
 432         /*
 433          * We can not send command to firmware while scanning. When the scan
 434          * complete we will schedule this work again. We do check with mutex
 435          * locked to prevent new scan request to arrive. We do not check
 436          * STATUS_SCANNING to avoid race when queue_work two times from
 437          * different notifications, but quit and not perform any work at all.
 438          */
 439         if (test_bit(STATUS_SCAN_HW, &priv->status))
 440                 goto out;
 441
 442         iwl_update_chain_flags(priv);
 443
 444         if (smps_request != -1) {
 445                 priv->current_ht_config.smps = smps_request;
 446                 for_each_context(priv, ctx) {
 447                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
 448                                 ieee80211_request_smps(ctx->vif, smps_request);
 449                 }
 450         }
 451
 452         /*
 453          * Dynamic PS poll related functionality. Adjust RSSI measurements if
 454          * necessary.
 455          */
 456         iwlagn_bt_coex_rssi_monitor(priv);
 457 out:
 458         mutex_unlock(&priv->mutex);
 459 }
 460
 461 /*
 462  * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
 463  * correct interface or disable it if this is the last interface to be
 464  * removed.
 465  */
 466 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
 467 {
 468         if (priv->bt_is_sco &&
 469             priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
 470                 iwlagn_bt_adjust_rssi_monitor(priv, true);
 471         else
 472                 iwlagn_bt_adjust_rssi_monitor(priv, false);
 473 }
 474
 475 static void iwlagn_print_uartmsg(struct iwl_priv *priv,
 476                                 struct iwl_bt_uart_msg *uart_msg)
 477 {
 478         IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
 479                         "Update Req = 0x%X\n",
 480                 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
 481                         BT_UART_MSG_FRAME1MSGTYPE_POS,
 482                 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
 483                         BT_UART_MSG_FRAME1SSN_POS,
 484                 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
 485                         BT_UART_MSG_FRAME1UPDATEREQ_POS);
 486
 487         IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
 488                         "Chl_SeqN = 0x%X, In band = 0x%X\n",
 489                 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
 490                         BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
 491                 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
 492                         BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
 493                 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
 494                         BT_UART_MSG_FRAME2CHLSEQN_POS,
 495                 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
 496                         BT_UART_MSG_FRAME2INBAND_POS);
 497
 498         IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
 499                         "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X\n",
 500                 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 501                         BT_UART_MSG_FRAME3SCOESCO_POS,
 502                 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
 503                         BT_UART_MSG_FRAME3SNIFF_POS,
 504                 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
 505                         BT_UART_MSG_FRAME3A2DP_POS,
 506                 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
 507                         BT_UART_MSG_FRAME3ACL_POS,
 508                 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
 509                         BT_UART_MSG_FRAME3MASTER_POS,
 510                 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
 511                         BT_UART_MSG_FRAME3OBEX_POS);
 512
 513         IWL_DEBUG_COEX(priv, "Idle duration = 0x%X\n",
 514                 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
 515                         BT_UART_MSG_FRAME4IDLEDURATION_POS);
 516
 517         IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
 518                         "eSCO Retransmissions = 0x%X\n",
 519                 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
 520                         BT_UART_MSG_FRAME5TXACTIVITY_POS,
 521                 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
 522                         BT_UART_MSG_FRAME5RXACTIVITY_POS,
 523                 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
 524                         BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
 525
 526         IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X\n",
 527                 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
 528                         BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
 529                 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
 530                         BT_UART_MSG_FRAME6DISCOVERABLE_POS);
 531
 532         IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
 533                         "0x%X, Inquiry = 0x%X, Connectable = 0x%X\n",
 534                 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
 535                         BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
 536                 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
 537                         BT_UART_MSG_FRAME7PAGE_POS,
 538                 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
 539                         BT_UART_MSG_FRAME7INQUIRY_POS,
 540                 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
 541                         BT_UART_MSG_FRAME7CONNECTABLE_POS);
 542 }
 543
 544 static void iwlagn_set_kill_msk(struct iwl_priv *priv,
 545                                 struct iwl_bt_uart_msg *uart_msg)
 546 {
 547         u8 kill_msk;
 548         static const __le32 bt_kill_ack_msg[2] = {
 549                 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
 550                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO };
 551         static const __le32 bt_kill_cts_msg[2] = {
 552                 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
 553                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO };
 554
 555         kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
 556                 ? 1 : 0;
 557         if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
 558             priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
 559                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
 560                 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
 561                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
 562                 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
 563
 564                 /* schedule to send runtime bt_config */
 565                 queue_work(priv->workqueue, &priv->bt_runtime_config);
 566         }
 567 }
 568
 569 int iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
 570                                   struct iwl_rx_cmd_buffer *rxb,
 571                                   struct iwl_device_cmd *cmd)
 572 {
 573         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 574         struct iwl_bt_coex_profile_notif *coex = (void *)pkt->data;
 575         struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
 576
 577         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 578                 /* bt coex disabled */
 579                 return 0;
 580         }
 581
 582         IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
 583         IWL_DEBUG_COEX(priv, "    status: %d\n", coex->bt_status);
 584         IWL_DEBUG_COEX(priv, "    traffic load: %d\n", coex->bt_traffic_load);
 585         IWL_DEBUG_COEX(priv, "    CI compliance: %d\n",
 586                         coex->bt_ci_compliance);
 587         iwlagn_print_uartmsg(priv, uart_msg);
 588
 589         priv->last_bt_traffic_load = priv->bt_traffic_load;
 590         priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
 591
 592         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
 593                 if (priv->bt_status != coex->bt_status ||
 594                     priv->last_bt_traffic_load != coex->bt_traffic_load) {
 595                         if (coex->bt_status) {
 596                                 /* BT on */
 597                                 if (!priv->bt_ch_announce)
 598                                         priv->bt_traffic_load =
 599                                                 IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
 600                                 else
 601                                         priv->bt_traffic_load =
 602                                                 coex->bt_traffic_load;
 603                         } else {
 604                                 /* BT off */
 605                                 priv->bt_traffic_load =
 606                                         IWL_BT_COEX_TRAFFIC_LOAD_NONE;
 607                         }
 608                         priv->bt_status = coex->bt_status;
 609                         queue_work(priv->workqueue,
 610                                    &priv->bt_traffic_change_work);
 611                 }
 612         }
 613
 614         iwlagn_set_kill_msk(priv, uart_msg);
 615
 616         /* FIXME: based on notification, adjust the prio_boost */
 617
 618         priv->bt_ci_compliance = coex->bt_ci_compliance;
 619         return 0;
 620 }
 621
 622 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
 623 {
 624         priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
 625                 iwlagn_bt_coex_profile_notif;
 626 }
 627
 628 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
 629 {
 630         INIT_WORK(&priv->bt_traffic_change_work,
 631                   iwlagn_bt_traffic_change_work);
 632 }
 633
 634 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
 635 {
 636         cancel_work_sync(&priv->bt_traffic_change_work);
 637 }
 638
 639 static bool is_single_rx_stream(struct iwl_priv *priv)
 640 {
 641         return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
 642                priv->current_ht_config.single_chain_sufficient;
 643 }
 644
 645 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 646 #define IWL_NUM_RX_CHAINS_SINGLE        2
 647 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 648 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 649
 650 /*
 651  * Determine how many receiver/antenna chains to use.
 652  *
 653  * More provides better reception via diversity.  Fewer saves power
 654  * at the expense of throughput, but only when not in powersave to
 655  * start with.
 656  *
 657  * MIMO (dual stream) requires at least 2, but works better with 3.
 658  * This does not determine *which* chains to use, just how many.
 659  */
 660 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 661 {
 662         if (priv->cfg->bt_params &&
 663             priv->cfg->bt_params->advanced_bt_coexist &&
 664             (priv->bt_full_concurrent ||
 665              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 666                 /*
 667                  * only use chain 'A' in bt high traffic load or
 668                  * full concurrency mode
 669                  */
 670                 return IWL_NUM_RX_CHAINS_SINGLE;
 671         }
 672         /* # of Rx chains to use when expecting MIMO. */
 673         if (is_single_rx_stream(priv))
 674                 return IWL_NUM_RX_CHAINS_SINGLE;
 675         else
 676                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 677 }
 678
 679 /*
 680  * When we are in power saving mode, unless device support spatial
 681  * multiplexing power save, use the active count for rx chain count.
 682  */
 683 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 684 {
 685         /* # Rx chains when idling, depending on SMPS mode */
 686         switch (priv->current_ht_config.smps) {
 687         case IEEE80211_SMPS_STATIC:
 688         case IEEE80211_SMPS_DYNAMIC:
 689                 return IWL_NUM_IDLE_CHAINS_SINGLE;
 690         case IEEE80211_SMPS_AUTOMATIC:
 691         case IEEE80211_SMPS_OFF:
 692                 return active_cnt;
 693         default:
 694                 WARN(1, "invalid SMPS mode %d",
 695                      priv->current_ht_config.smps);
 696                 return active_cnt;
 697         }
 698 }
 699
 700 /* up to 4 chains */
 701 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
 702 {
 703         u8 res;
 704         res = (chain_bitmap & BIT(0)) >> 0;
 705         res += (chain_bitmap & BIT(1)) >> 1;
 706         res += (chain_bitmap & BIT(2)) >> 2;
 707         res += (chain_bitmap & BIT(3)) >> 3;
 708         return res;
 709 }
 710
 711 /**
 712  * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
 713  *
 714  * Selects how many and which Rx receivers/antennas/chains to use.
 715  * This should not be used for scan command ... it puts data in wrong place.
 716  */
 717 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 718 {
 719         bool is_single = is_single_rx_stream(priv);
 720         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 721         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
 722         u32 active_chains;
 723         u16 rx_chain;
 724
 725         /* Tell uCode which antennas are actually connected.
 726          * Before first association, we assume all antennas are connected.
 727          * Just after first association, iwl_chain_noise_calibration()
 728          *    checks which antennas actually *are* connected. */
 729         if (priv->chain_noise_data.active_chains)
 730                 active_chains = priv->chain_noise_data.active_chains;
 731         else
 732                 active_chains = priv->hw_params.valid_rx_ant;
 733
 734         if (priv->cfg->bt_params &&
 735             priv->cfg->bt_params->advanced_bt_coexist &&
 736             (priv->bt_full_concurrent ||
 737              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 738                 /*
 739                  * only use chain 'A' in bt high traffic load or
 740                  * full concurrency mode
 741                  */
 742                 active_chains = first_antenna(active_chains);
 743         }
 744
 745         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
 746
 747         /* How many receivers should we use? */
 748         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
 749         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
 750
 751
 752         /* correct rx chain count according hw settings
 753          * and chain noise calibration
 754          */
 755         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
 756         if (valid_rx_cnt < active_rx_cnt)
 757                 active_rx_cnt = valid_rx_cnt;
 758
 759         if (valid_rx_cnt < idle_rx_cnt)
 760                 idle_rx_cnt = valid_rx_cnt;
 761
 762         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
 763         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
 764
 765         ctx->staging.rx_chain = cpu_to_le16(rx_chain);
 766
 767         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
 768                 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
 769         else
 770                 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
 771
 772         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
 773                         ctx->staging.rx_chain,
 774                         active_rx_cnt, idle_rx_cnt);
 775
 776         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
 777                 active_rx_cnt < idle_rx_cnt);
 778 }
 779
 780 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
 781 {
 782         int i;
 783         u8 ind = ant;
 784
 785         if (priv->band == IEEE80211_BAND_2GHZ &&
 786             priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
 787                 return 0;
 788
 789         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 790                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 791                 if (valid & BIT(ind))
 792                         return ind;
 793         }
 794         return ant;
 795 }
 796
 797 #ifdef CONFIG_PM_SLEEP
 798 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
 799 {
 800         int i;
 801
 802         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
 803                 out[i] = cpu_to_le16(p1k[i]);
 804 }
 805
 806 struct wowlan_key_data {
 807         struct iwl_rxon_context *ctx;
 808         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
 809         struct iwlagn_wowlan_tkip_params_cmd *tkip;
 810         const u8 *bssid;
 811         bool error, use_rsc_tsc, use_tkip;
 812 };
 813
 814
 815 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
 816                                struct ieee80211_vif *vif,
 817                                struct ieee80211_sta *sta,
 818                                struct ieee80211_key_conf *key,
 819                                void *_data)
 820 {
 821         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 822         struct wowlan_key_data *data = _data;
 823         struct iwl_rxon_context *ctx = data->ctx;
 824         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
 825         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 826         struct iwlagn_p1k_cache *rx_p1ks;
 827         u8 *rx_mic_key;
 828         struct ieee80211_key_seq seq;
 829         u32 cur_rx_iv32 = 0;
 830         u16 p1k[IWLAGN_P1K_SIZE];
 831         int ret, i;
 832
 833         mutex_lock(&priv->mutex);
 834
 835         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 836              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 837              !sta && !ctx->key_mapping_keys)
 838                 ret = iwl_set_default_wep_key(priv, ctx, key);
 839         else
 840                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
 841
 842         if (ret) {
 843                 IWL_ERR(priv, "Error setting key during suspend!\n");
 844                 data->error = true;
 845         }
 846
 847         switch (key->cipher) {
 848         case WLAN_CIPHER_SUITE_TKIP:
 849                 if (sta) {
 850                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
 851                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
 852
 853                         rx_p1ks = data->tkip->rx_uni;
 854
 855                         ieee80211_get_key_tx_seq(key, &seq);
 856                         tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
 857                         tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
 858
 859                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
 860                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
 861
 862                         memcpy(data->tkip->mic_keys.tx,
 863                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
 864                                IWLAGN_MIC_KEY_SIZE);
 865
 866                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
 867                 } else {
 868                         tkip_sc =
 869                                 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
 870                         rx_p1ks = data->tkip->rx_multi;
 871                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
 872                 }
 873
 874                 /*
 875                  * For non-QoS this relies on the fact that both the uCode and
 876                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 877                  * for checking the IV in the frames.
 878                  */
 879                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
 880                         ieee80211_get_key_rx_seq(key, i, &seq);
 881                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
 882                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
 883                         /* wrapping isn't allowed, AP must rekey */
 884                         if (seq.tkip.iv32 > cur_rx_iv32)
 885                                 cur_rx_iv32 = seq.tkip.iv32;
 886                 }
 887
 888                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
 889                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
 890                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
 891                                           cur_rx_iv32 + 1, p1k);
 892                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
 893
 894                 memcpy(rx_mic_key,
 895                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
 896                        IWLAGN_MIC_KEY_SIZE);
 897
 898                 data->use_tkip = true;
 899                 data->use_rsc_tsc = true;
 900                 break;
 901         case WLAN_CIPHER_SUITE_CCMP:
 902                 if (sta) {
 903                         u8 *pn = seq.ccmp.pn;
 904
 905                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
 906                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
 907
 908                         ieee80211_get_key_tx_seq(key, &seq);
 909                         aes_tx_sc->pn = cpu_to_le64(
 910                                         (u64)pn[5] |
 911                                         ((u64)pn[4] << 8) |
 912                                         ((u64)pn[3] << 16) |
 913                                         ((u64)pn[2] << 24) |
 914                                         ((u64)pn[1] << 32) |
 915                                         ((u64)pn[0] << 40));
 916                 } else
 917                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
 918
 919                 /*
 920                  * For non-QoS this relies on the fact that both the uCode and
 921                  * mac80211 use TID 0 for checking the IV in the frames.
 922                  */
 923                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
 924                         u8 *pn = seq.ccmp.pn;
 925
 926                         ieee80211_get_key_rx_seq(key, i, &seq);
 927                         aes_sc->pn = cpu_to_le64(
 928                                         (u64)pn[5] |
 929                                         ((u64)pn[4] << 8) |
 930                                         ((u64)pn[3] << 16) |
 931                                         ((u64)pn[2] << 24) |
 932                                         ((u64)pn[1] << 32) |
 933                                         ((u64)pn[0] << 40));
 934                 }
 935                 data->use_rsc_tsc = true;
 936                 break;
 937         }
 938
 939         mutex_unlock(&priv->mutex);
 940 }
 941
 942 int iwlagn_send_patterns(struct iwl_priv *priv,
 943                         struct cfg80211_wowlan *wowlan)
 944 {
 945         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
 946         struct iwl_host_cmd cmd = {
 947                 .id = REPLY_WOWLAN_PATTERNS,
 948                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 949                 .flags = CMD_SYNC,
 950         };
 951         int i, err;
 952
 953         if (!wowlan->n_patterns)
 954                 return 0;
 955
 956         cmd.len[0] = sizeof(*pattern_cmd) +
 957                 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
 958
 959         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
 960         if (!pattern_cmd)
 961                 return -ENOMEM;
 962
 963         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
 964
 965         for (i = 0; i < wowlan->n_patterns; i++) {
 966                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 967
 968                 memcpy(&pattern_cmd->patterns[i].mask,
 969                         wowlan->patterns[i].mask, mask_len);
 970                 memcpy(&pattern_cmd->patterns[i].pattern,
 971                         wowlan->patterns[i].pattern,
 972                         wowlan->patterns[i].pattern_len);
 973                 pattern_cmd->patterns[i].mask_size = mask_len;
 974                 pattern_cmd->patterns[i].pattern_size =
 975                         wowlan->patterns[i].pattern_len;
 976         }
 977
 978         cmd.data[0] = pattern_cmd;
 979         err = iwl_dvm_send_cmd(priv, &cmd);
 980         kfree(pattern_cmd);
 981         return err;
 982 }
 983
 984 int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan)
 985 {
 986         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
 987         struct iwl_rxon_cmd rxon;
 988         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 989         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
 990         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
 991         struct iwlagn_d3_config_cmd d3_cfg_cmd = {};
 992         struct wowlan_key_data key_data = {
 993                 .ctx = ctx,
 994                 .bssid = ctx->active.bssid_addr,
 995                 .use_rsc_tsc = false,
 996                 .tkip = &tkip_cmd,
 997                 .use_tkip = false,
 998         };
 999         int ret, i;
1000         u16 seq;
1001
1002         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1003         if (!key_data.rsc_tsc)
1004                 return -ENOMEM;
1005
1006         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1007
1008         /*
1009          * We know the last used seqno, and the uCode expects to know that
1010          * one, it will increment before TX.
1011          */
1012         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1013         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1014
1015         /*
1016          * For QoS counters, we store the one to use next, so subtract 0x10
1017          * since the uCode will add 0x10 before using the value.
1018          */
1019         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1020                 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1021                 seq -= 0x10;
1022                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1023         }
1024
1025         if (wowlan->disconnect)
1026                 wakeup_filter_cmd.enabled |=
1027                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1028                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1029         if (wowlan->magic_pkt)
1030                 wakeup_filter_cmd.enabled |=
1031                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1032         if (wowlan->gtk_rekey_failure)
1033                 wakeup_filter_cmd.enabled |=
1034                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1035         if (wowlan->eap_identity_req)
1036                 wakeup_filter_cmd.enabled |=
1037                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1038         if (wowlan->four_way_handshake)
1039                 wakeup_filter_cmd.enabled |=
1040                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1041         if (wowlan->n_patterns)
1042                 wakeup_filter_cmd.enabled |=
1043                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1044
1045         if (wowlan->rfkill_release)
1046                 d3_cfg_cmd.wakeup_flags |=
1047                         cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1048
1049         iwl_scan_cancel_timeout(priv, 200);
1050
1051         memcpy(&rxon, &ctx->active, sizeof(rxon));
1052
1053         priv->ucode_loaded = false;
1054         iwl_trans_stop_device(priv->trans);
1055
1056         priv->wowlan = true;
1057
1058         ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
1059         if (ret)
1060                 goto out;
1061
1062         /* now configure WoWLAN ucode */
1063         ret = iwl_alive_start(priv);
1064         if (ret)
1065                 goto out;
1066
1067         memcpy(&ctx->staging, &rxon, sizeof(rxon));
1068         ret = iwlagn_commit_rxon(priv, ctx);
1069         if (ret)
1070                 goto out;
1071
1072         ret = iwl_power_update_mode(priv, true);
1073         if (ret)
1074                 goto out;
1075
1076         if (!iwlwifi_mod_params.sw_crypto) {
1077                 /* mark all keys clear */
1078                 priv->ucode_key_table = 0;
1079                 ctx->key_mapping_keys = 0;
1080
1081                 /*
1082                  * This needs to be unlocked due to lock ordering
1083                  * constraints. Since we're in the suspend path
1084                  * that isn't really a problem though.
1085                  */
1086                 mutex_unlock(&priv->mutex);
1087                 ieee80211_iter_keys(priv->hw, ctx->vif,
1088                                     iwlagn_wowlan_program_keys,
1089                                     &key_data);
1090                 mutex_lock(&priv->mutex);
1091                 if (key_data.error) {
1092                         ret = -EIO;
1093                         goto out;
1094                 }
1095
1096                 if (key_data.use_rsc_tsc) {
1097                         struct iwl_host_cmd rsc_tsc_cmd = {
1098                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1099                                 .flags = CMD_SYNC,
1100                                 .data[0] = key_data.rsc_tsc,
1101                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1102                                 .len[0] = sizeof(*key_data.rsc_tsc),
1103                         };
1104
1105                         ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd);
1106                         if (ret)
1107                                 goto out;
1108                 }
1109
1110                 if (key_data.use_tkip) {
1111                         ret = iwl_dvm_send_cmd_pdu(priv,
1112                                                  REPLY_WOWLAN_TKIP_PARAMS,
1113                                                  CMD_SYNC, sizeof(tkip_cmd),
1114                                                  &tkip_cmd);
1115                         if (ret)
1116                                 goto out;
1117                 }
1118
1119                 if (priv->have_rekey_data) {
1120                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1121                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1122                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1123                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1124                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1125                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
1126
1127                         ret = iwl_dvm_send_cmd_pdu(priv,
1128                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
1129                                                  CMD_SYNC, sizeof(kek_kck_cmd),
1130                                                  &kek_kck_cmd);
1131                         if (ret)
1132                                 goto out;
1133                 }
1134         }
1135
1136         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, CMD_SYNC,
1137                                      sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1138         if (ret)
1139                 goto out;
1140
1141         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER,
1142                                  CMD_SYNC, sizeof(wakeup_filter_cmd),
1143                                  &wakeup_filter_cmd);
1144         if (ret)
1145                 goto out;
1146
1147         ret = iwlagn_send_patterns(priv, wowlan);
1148  out:
1149         kfree(key_data.rsc_tsc);
1150         return ret;
1151 }
1152 #endif
1153
1154 int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
1155 {
1156         if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
1157                 IWL_WARN(priv, "Not sending command - %s KILL\n",
1158                          iwl_is_rfkill(priv) ? "RF" : "CT");
1159                 return -EIO;
1160         }
1161
1162         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
1163                 IWL_ERR(priv, "Command %s failed: FW Error\n",
1164                         iwl_dvm_get_cmd_string(cmd->id));
1165                 return -EIO;
1166         }
1167
1168         /*
1169          * Synchronous commands from this op-mode must hold
1170          * the mutex, this ensures we don't try to send two
1171          * (or more) synchronous commands at a time.
1172          */
1173         if (cmd->flags & CMD_SYNC)
1174                 lockdep_assert_held(&priv->mutex);
1175
1176         if (priv->ucode_owner == IWL_OWNERSHIP_TM &&
1177             !(cmd->flags & CMD_ON_DEMAND)) {
1178                 IWL_DEBUG_HC(priv, "tm own the uCode, no regular hcmd send\n");
1179                 return -EIO;
1180         }
1181
1182         return iwl_trans_send_cmd(priv->trans, cmd);
1183 }
1184
1185 int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id,
1186                          u32 flags, u16 len, const void *data)
1187 {
1188         struct iwl_host_cmd cmd = {
1189                 .id = id,
1190                 .len = { len, },
1191                 .data = { data, },
1192                 .flags = flags,
1193         };
1194
1195         return iwl_dvm_send_cmd(priv, &cmd);
1196 }