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.reduce_txpower = priv->reduced_txpower;
 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->cfg->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                         CMD_SYNC, 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                         CMD_SYNC, 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 static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv,
 574                                 struct iwl_bt_uart_msg *uart_msg)
 575 {
 576         bool need_update = false;
 577
 578         if (!priv->reduced_txpower &&
 579             !iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
 580             (uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 581             BT_UART_MSG_FRAME3OBEX_MSK)) &&
 582             !(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 583             BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK))) {
 584                 /* enabling reduced tx power */
 585                 priv->reduced_txpower = true;
 586                 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 587                 need_update = true;
 588         } else if (priv->reduced_txpower &&
 589                    (iwl_is_associated(priv, IWL_RXON_CTX_PAN) ||
 590                    (uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 591                    BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK)) ||
 592                    !(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 593                    BT_UART_MSG_FRAME3OBEX_MSK)))) {
 594                 /* disable reduced tx power */
 595                 priv->reduced_txpower = false;
 596                 priv->bt_valid &= ~IWLAGN_BT_VALID_REDUCED_TX_PWR;
 597                 need_update = true;
 598         }
 599
 600         return need_update;
 601 }
 602
 603 int iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
 604                                   struct iwl_rx_cmd_buffer *rxb,
 605                                   struct iwl_device_cmd *cmd)
 606 {
 607         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 608         struct iwl_bt_coex_profile_notif *coex = (void *)pkt->data;
 609         struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
 610
 611         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 612                 /* bt coex disabled */
 613                 return 0;
 614         }
 615
 616         IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
 617         IWL_DEBUG_COEX(priv, "    status: %d\n", coex->bt_status);
 618         IWL_DEBUG_COEX(priv, "    traffic load: %d\n", coex->bt_traffic_load);
 619         IWL_DEBUG_COEX(priv, "    CI compliance: %d\n",
 620                         coex->bt_ci_compliance);
 621         iwlagn_print_uartmsg(priv, uart_msg);
 622
 623         priv->last_bt_traffic_load = priv->bt_traffic_load;
 624         priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
 625
 626         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
 627                 if (priv->bt_status != coex->bt_status ||
 628                     priv->last_bt_traffic_load != coex->bt_traffic_load) {
 629                         if (coex->bt_status) {
 630                                 /* BT on */
 631                                 if (!priv->bt_ch_announce)
 632                                         priv->bt_traffic_load =
 633                                                 IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
 634                                 else
 635                                         priv->bt_traffic_load =
 636                                                 coex->bt_traffic_load;
 637                         } else {
 638                                 /* BT off */
 639                                 priv->bt_traffic_load =
 640                                         IWL_BT_COEX_TRAFFIC_LOAD_NONE;
 641                         }
 642                         priv->bt_status = coex->bt_status;
 643                         queue_work(priv->workqueue,
 644                                    &priv->bt_traffic_change_work);
 645                 }
 646         }
 647
 648         /* schedule to send runtime bt_config */
 649         /* check reduce power before change ack/cts kill mask */
 650         if (iwlagn_fill_txpower_mode(priv, uart_msg) ||
 651             iwlagn_set_kill_msk(priv, uart_msg))
 652                 queue_work(priv->workqueue, &priv->bt_runtime_config);
 653
 654
 655         /* FIXME: based on notification, adjust the prio_boost */
 656
 657         priv->bt_ci_compliance = coex->bt_ci_compliance;
 658         return 0;
 659 }
 660
 661 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
 662 {
 663         priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
 664                 iwlagn_bt_coex_profile_notif;
 665 }
 666
 667 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
 668 {
 669         INIT_WORK(&priv->bt_traffic_change_work,
 670                   iwlagn_bt_traffic_change_work);
 671 }
 672
 673 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
 674 {
 675         cancel_work_sync(&priv->bt_traffic_change_work);
 676 }
 677
 678 static bool is_single_rx_stream(struct iwl_priv *priv)
 679 {
 680         return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
 681                priv->current_ht_config.single_chain_sufficient;
 682 }
 683
 684 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 685 #define IWL_NUM_RX_CHAINS_SINGLE        2
 686 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 687 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 688
 689 /*
 690  * Determine how many receiver/antenna chains to use.
 691  *
 692  * More provides better reception via diversity.  Fewer saves power
 693  * at the expense of throughput, but only when not in powersave to
 694  * start with.
 695  *
 696  * MIMO (dual stream) requires at least 2, but works better with 3.
 697  * This does not determine *which* chains to use, just how many.
 698  */
 699 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 700 {
 701         if (priv->cfg->bt_params &&
 702             priv->cfg->bt_params->advanced_bt_coexist &&
 703             (priv->bt_full_concurrent ||
 704              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 705                 /*
 706                  * only use chain 'A' in bt high traffic load or
 707                  * full concurrency mode
 708                  */
 709                 return IWL_NUM_RX_CHAINS_SINGLE;
 710         }
 711         /* # of Rx chains to use when expecting MIMO. */
 712         if (is_single_rx_stream(priv))
 713                 return IWL_NUM_RX_CHAINS_SINGLE;
 714         else
 715                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 716 }
 717
 718 /*
 719  * When we are in power saving mode, unless device support spatial
 720  * multiplexing power save, use the active count for rx chain count.
 721  */
 722 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 723 {
 724         /* # Rx chains when idling, depending on SMPS mode */
 725         switch (priv->current_ht_config.smps) {
 726         case IEEE80211_SMPS_STATIC:
 727         case IEEE80211_SMPS_DYNAMIC:
 728                 return IWL_NUM_IDLE_CHAINS_SINGLE;
 729         case IEEE80211_SMPS_AUTOMATIC:
 730         case IEEE80211_SMPS_OFF:
 731                 return active_cnt;
 732         default:
 733                 WARN(1, "invalid SMPS mode %d",
 734                      priv->current_ht_config.smps);
 735                 return active_cnt;
 736         }
 737 }
 738
 739 /* up to 4 chains */
 740 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
 741 {
 742         u8 res;
 743         res = (chain_bitmap & BIT(0)) >> 0;
 744         res += (chain_bitmap & BIT(1)) >> 1;
 745         res += (chain_bitmap & BIT(2)) >> 2;
 746         res += (chain_bitmap & BIT(3)) >> 3;
 747         return res;
 748 }
 749
 750 /**
 751  * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
 752  *
 753  * Selects how many and which Rx receivers/antennas/chains to use.
 754  * This should not be used for scan command ... it puts data in wrong place.
 755  */
 756 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 757 {
 758         bool is_single = is_single_rx_stream(priv);
 759         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 760         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
 761         u32 active_chains;
 762         u16 rx_chain;
 763
 764         /* Tell uCode which antennas are actually connected.
 765          * Before first association, we assume all antennas are connected.
 766          * Just after first association, iwl_chain_noise_calibration()
 767          *    checks which antennas actually *are* connected. */
 768         if (priv->chain_noise_data.active_chains)
 769                 active_chains = priv->chain_noise_data.active_chains;
 770         else
 771                 active_chains = priv->hw_params.valid_rx_ant;
 772
 773         if (priv->cfg->bt_params &&
 774             priv->cfg->bt_params->advanced_bt_coexist &&
 775             (priv->bt_full_concurrent ||
 776              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 777                 /*
 778                  * only use chain 'A' in bt high traffic load or
 779                  * full concurrency mode
 780                  */
 781                 active_chains = first_antenna(active_chains);
 782         }
 783
 784         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
 785
 786         /* How many receivers should we use? */
 787         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
 788         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
 789
 790
 791         /* correct rx chain count according hw settings
 792          * and chain noise calibration
 793          */
 794         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
 795         if (valid_rx_cnt < active_rx_cnt)
 796                 active_rx_cnt = valid_rx_cnt;
 797
 798         if (valid_rx_cnt < idle_rx_cnt)
 799                 idle_rx_cnt = valid_rx_cnt;
 800
 801         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
 802         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
 803
 804         ctx->staging.rx_chain = cpu_to_le16(rx_chain);
 805
 806         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
 807                 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
 808         else
 809                 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
 810
 811         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
 812                         ctx->staging.rx_chain,
 813                         active_rx_cnt, idle_rx_cnt);
 814
 815         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
 816                 active_rx_cnt < idle_rx_cnt);
 817 }
 818
 819 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
 820 {
 821         int i;
 822         u8 ind = ant;
 823
 824         if (priv->band == IEEE80211_BAND_2GHZ &&
 825             priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
 826                 return 0;
 827
 828         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 829                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 830                 if (valid & BIT(ind))
 831                         return ind;
 832         }
 833         return ant;
 834 }
 835
 836 #ifdef CONFIG_PM_SLEEP
 837 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
 838 {
 839         int i;
 840
 841         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
 842                 out[i] = cpu_to_le16(p1k[i]);
 843 }
 844
 845 struct wowlan_key_data {
 846         struct iwl_rxon_context *ctx;
 847         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
 848         struct iwlagn_wowlan_tkip_params_cmd *tkip;
 849         const u8 *bssid;
 850         bool error, use_rsc_tsc, use_tkip;
 851 };
 852
 853
 854 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
 855                                struct ieee80211_vif *vif,
 856                                struct ieee80211_sta *sta,
 857                                struct ieee80211_key_conf *key,
 858                                void *_data)
 859 {
 860         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 861         struct wowlan_key_data *data = _data;
 862         struct iwl_rxon_context *ctx = data->ctx;
 863         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
 864         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 865         struct iwlagn_p1k_cache *rx_p1ks;
 866         u8 *rx_mic_key;
 867         struct ieee80211_key_seq seq;
 868         u32 cur_rx_iv32 = 0;
 869         u16 p1k[IWLAGN_P1K_SIZE];
 870         int ret, i;
 871
 872         mutex_lock(&priv->mutex);
 873
 874         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 875              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 876              !sta && !ctx->key_mapping_keys)
 877                 ret = iwl_set_default_wep_key(priv, ctx, key);
 878         else
 879                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
 880
 881         if (ret) {
 882                 IWL_ERR(priv, "Error setting key during suspend!\n");
 883                 data->error = true;
 884         }
 885
 886         switch (key->cipher) {
 887         case WLAN_CIPHER_SUITE_TKIP:
 888                 if (sta) {
 889                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
 890                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
 891
 892                         rx_p1ks = data->tkip->rx_uni;
 893
 894                         ieee80211_get_key_tx_seq(key, &seq);
 895                         tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
 896                         tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
 897
 898                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
 899                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
 900
 901                         memcpy(data->tkip->mic_keys.tx,
 902                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
 903                                IWLAGN_MIC_KEY_SIZE);
 904
 905                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
 906                 } else {
 907                         tkip_sc =
 908                                 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
 909                         rx_p1ks = data->tkip->rx_multi;
 910                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
 911                 }
 912
 913                 /*
 914                  * For non-QoS this relies on the fact that both the uCode and
 915                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 916                  * for checking the IV in the frames.
 917                  */
 918                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
 919                         ieee80211_get_key_rx_seq(key, i, &seq);
 920                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
 921                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
 922                         /* wrapping isn't allowed, AP must rekey */
 923                         if (seq.tkip.iv32 > cur_rx_iv32)
 924                                 cur_rx_iv32 = seq.tkip.iv32;
 925                 }
 926
 927                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
 928                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
 929                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
 930                                           cur_rx_iv32 + 1, p1k);
 931                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
 932
 933                 memcpy(rx_mic_key,
 934                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
 935                        IWLAGN_MIC_KEY_SIZE);
 936
 937                 data->use_tkip = true;
 938                 data->use_rsc_tsc = true;
 939                 break;
 940         case WLAN_CIPHER_SUITE_CCMP:
 941                 if (sta) {
 942                         u8 *pn = seq.ccmp.pn;
 943
 944                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
 945                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
 946
 947                         ieee80211_get_key_tx_seq(key, &seq);
 948                         aes_tx_sc->pn = cpu_to_le64(
 949                                         (u64)pn[5] |
 950                                         ((u64)pn[4] << 8) |
 951                                         ((u64)pn[3] << 16) |
 952                                         ((u64)pn[2] << 24) |
 953                                         ((u64)pn[1] << 32) |
 954                                         ((u64)pn[0] << 40));
 955                 } else
 956                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
 957
 958                 /*
 959                  * For non-QoS this relies on the fact that both the uCode and
 960                  * mac80211 use TID 0 for checking the IV in the frames.
 961                  */
 962                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
 963                         u8 *pn = seq.ccmp.pn;
 964
 965                         ieee80211_get_key_rx_seq(key, i, &seq);
 966                         aes_sc->pn = cpu_to_le64(
 967                                         (u64)pn[5] |
 968                                         ((u64)pn[4] << 8) |
 969                                         ((u64)pn[3] << 16) |
 970                                         ((u64)pn[2] << 24) |
 971                                         ((u64)pn[1] << 32) |
 972                                         ((u64)pn[0] << 40));
 973                 }
 974                 data->use_rsc_tsc = true;
 975                 break;
 976         }
 977
 978         mutex_unlock(&priv->mutex);
 979 }
 980
 981 int iwlagn_send_patterns(struct iwl_priv *priv,
 982                         struct cfg80211_wowlan *wowlan)
 983 {
 984         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
 985         struct iwl_host_cmd cmd = {
 986                 .id = REPLY_WOWLAN_PATTERNS,
 987                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 988                 .flags = CMD_SYNC,
 989         };
 990         int i, err;
 991
 992         if (!wowlan->n_patterns)
 993                 return 0;
 994
 995         cmd.len[0] = sizeof(*pattern_cmd) +
 996                 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
 997
 998         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
 999         if (!pattern_cmd)
1000                 return -ENOMEM;
1001
1002         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1003
1004         for (i = 0; i < wowlan->n_patterns; i++) {
1005                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1006
1007                 memcpy(&pattern_cmd->patterns[i].mask,
1008                         wowlan->patterns[i].mask, mask_len);
1009                 memcpy(&pattern_cmd->patterns[i].pattern,
1010                         wowlan->patterns[i].pattern,
1011                         wowlan->patterns[i].pattern_len);
1012                 pattern_cmd->patterns[i].mask_size = mask_len;
1013                 pattern_cmd->patterns[i].pattern_size =
1014                         wowlan->patterns[i].pattern_len;
1015         }
1016
1017         cmd.data[0] = pattern_cmd;
1018         err = iwl_dvm_send_cmd(priv, &cmd);
1019         kfree(pattern_cmd);
1020         return err;
1021 }
1022
1023 int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan)
1024 {
1025         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
1026         struct iwl_rxon_cmd rxon;
1027         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1028         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
1029         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
1030         struct iwlagn_d3_config_cmd d3_cfg_cmd = {};
1031         struct wowlan_key_data key_data = {
1032                 .ctx = ctx,
1033                 .bssid = ctx->active.bssid_addr,
1034                 .use_rsc_tsc = false,
1035                 .tkip = &tkip_cmd,
1036                 .use_tkip = false,
1037         };
1038         int ret, i;
1039         u16 seq;
1040
1041         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1042         if (!key_data.rsc_tsc)
1043                 return -ENOMEM;
1044
1045         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1046
1047         /*
1048          * We know the last used seqno, and the uCode expects to know that
1049          * one, it will increment before TX.
1050          */
1051         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1052         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1053
1054         /*
1055          * For QoS counters, we store the one to use next, so subtract 0x10
1056          * since the uCode will add 0x10 before using the value.
1057          */
1058         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1059                 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1060                 seq -= 0x10;
1061                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1062         }
1063
1064         if (wowlan->disconnect)
1065                 wakeup_filter_cmd.enabled |=
1066                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1067                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1068         if (wowlan->magic_pkt)
1069                 wakeup_filter_cmd.enabled |=
1070                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1071         if (wowlan->gtk_rekey_failure)
1072                 wakeup_filter_cmd.enabled |=
1073                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1074         if (wowlan->eap_identity_req)
1075                 wakeup_filter_cmd.enabled |=
1076                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1077         if (wowlan->four_way_handshake)
1078                 wakeup_filter_cmd.enabled |=
1079                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1080         if (wowlan->n_patterns)
1081                 wakeup_filter_cmd.enabled |=
1082                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1083
1084         if (wowlan->rfkill_release)
1085                 d3_cfg_cmd.wakeup_flags |=
1086                         cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1087
1088         iwl_scan_cancel_timeout(priv, 200);
1089
1090         memcpy(&rxon, &ctx->active, sizeof(rxon));
1091
1092         priv->ucode_loaded = false;
1093         iwl_trans_stop_device(priv->trans);
1094
1095         priv->wowlan = true;
1096
1097         ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
1098         if (ret)
1099                 goto out;
1100
1101         /* now configure WoWLAN ucode */
1102         ret = iwl_alive_start(priv);
1103         if (ret)
1104                 goto out;
1105
1106         memcpy(&ctx->staging, &rxon, sizeof(rxon));
1107         ret = iwlagn_commit_rxon(priv, ctx);
1108         if (ret)
1109                 goto out;
1110
1111         ret = iwl_power_update_mode(priv, true);
1112         if (ret)
1113                 goto out;
1114
1115         if (!iwlwifi_mod_params.sw_crypto) {
1116                 /* mark all keys clear */
1117                 priv->ucode_key_table = 0;
1118                 ctx->key_mapping_keys = 0;
1119
1120                 /*
1121                  * This needs to be unlocked due to lock ordering
1122                  * constraints. Since we're in the suspend path
1123                  * that isn't really a problem though.
1124                  */
1125                 mutex_unlock(&priv->mutex);
1126                 ieee80211_iter_keys(priv->hw, ctx->vif,
1127                                     iwlagn_wowlan_program_keys,
1128                                     &key_data);
1129                 mutex_lock(&priv->mutex);
1130                 if (key_data.error) {
1131                         ret = -EIO;
1132                         goto out;
1133                 }
1134
1135                 if (key_data.use_rsc_tsc) {
1136                         struct iwl_host_cmd rsc_tsc_cmd = {
1137                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1138                                 .flags = CMD_SYNC,
1139                                 .data[0] = key_data.rsc_tsc,
1140                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1141                                 .len[0] = sizeof(*key_data.rsc_tsc),
1142                         };
1143
1144                         ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd);
1145                         if (ret)
1146                                 goto out;
1147                 }
1148
1149                 if (key_data.use_tkip) {
1150                         ret = iwl_dvm_send_cmd_pdu(priv,
1151                                                  REPLY_WOWLAN_TKIP_PARAMS,
1152                                                  CMD_SYNC, sizeof(tkip_cmd),
1153                                                  &tkip_cmd);
1154                         if (ret)
1155                                 goto out;
1156                 }
1157
1158                 if (priv->have_rekey_data) {
1159                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1160                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1161                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1162                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1163                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1164                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
1165
1166                         ret = iwl_dvm_send_cmd_pdu(priv,
1167                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
1168                                                  CMD_SYNC, sizeof(kek_kck_cmd),
1169                                                  &kek_kck_cmd);
1170                         if (ret)
1171                                 goto out;
1172                 }
1173         }
1174
1175         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, CMD_SYNC,
1176                                      sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1177         if (ret)
1178                 goto out;
1179
1180         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER,
1181                                  CMD_SYNC, sizeof(wakeup_filter_cmd),
1182                                  &wakeup_filter_cmd);
1183         if (ret)
1184                 goto out;
1185
1186         ret = iwlagn_send_patterns(priv, wowlan);
1187  out:
1188         kfree(key_data.rsc_tsc);
1189         return ret;
1190 }
1191 #endif
1192
1193 int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
1194 {
1195         if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
1196                 IWL_WARN(priv, "Not sending command - %s KILL\n",
1197                          iwl_is_rfkill(priv) ? "RF" : "CT");
1198                 return -EIO;
1199         }
1200
1201         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
1202                 IWL_ERR(priv, "Command %s failed: FW Error\n",
1203                         iwl_dvm_get_cmd_string(cmd->id));
1204                 return -EIO;
1205         }
1206
1207         /*
1208          * Synchronous commands from this op-mode must hold
1209          * the mutex, this ensures we don't try to send two
1210          * (or more) synchronous commands at a time.
1211          */
1212         if (cmd->flags & CMD_SYNC)
1213                 lockdep_assert_held(&priv->mutex);
1214
1215         if (priv->ucode_owner == IWL_OWNERSHIP_TM &&
1216             !(cmd->flags & CMD_ON_DEMAND)) {
1217                 IWL_DEBUG_HC(priv, "tm own the uCode, no regular hcmd send\n");
1218                 return -EIO;
1219         }
1220
1221         return iwl_trans_send_cmd(priv->trans, cmd);
1222 }
1223
1224 int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id,
1225                          u32 flags, u16 len, const void *data)
1226 {
1227         struct iwl_host_cmd cmd = {
1228                 .id = id,
1229                 .len = { len, },
1230                 .data = { data, },
1231                 .flags = flags,
1232         };
1233
1234         return iwl_dvm_send_cmd(priv, &cmd);
1235 }