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

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 - 2011 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-wifi.h"
  36 #include "iwl-dev.h"
  37 #include "iwl-core.h"
  38 #include "iwl-io.h"
  39 #include "iwl-agn-hw.h"
  40 #include "iwl-agn.h"
  41 #include "iwl-trans.h"
  42 #include "iwl-shared.h"
  43
  44 int iwlagn_hw_valid_rtc_data_addr(u32 addr)
  45 {
  46         return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) &&
  47                 (addr < IWLAGN_RTC_DATA_UPPER_BOUND);
  48 }
  49
  50 int iwlagn_send_tx_power(struct iwl_priv *priv)
  51 {
  52         struct iwlagn_tx_power_dbm_cmd tx_power_cmd;
  53         u8 tx_ant_cfg_cmd;
  54
  55         if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->shrd->status),
  56                       "TX Power requested while scanning!\n"))
  57                 return -EAGAIN;
  58
  59         /* half dBm need to multiply */
  60         tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
  61
  62         if (priv->tx_power_lmt_in_half_dbm &&
  63             priv->tx_power_lmt_in_half_dbm < tx_power_cmd.global_lmt) {
  64                 /*
  65                  * For the newer devices which using enhanced/extend tx power
  66                  * table in EEPROM, the format is in half dBm. driver need to
  67                  * convert to dBm format before report to mac80211.
  68                  * By doing so, there is a possibility of 1/2 dBm resolution
  69                  * lost. driver will perform "round-up" operation before
  70                  * reporting, but it will cause 1/2 dBm tx power over the
  71                  * regulatory limit. Perform the checking here, if the
  72                  * "tx_power_user_lmt" is higher than EEPROM value (in
  73                  * half-dBm format), lower the tx power based on EEPROM
  74                  */
  75                 tx_power_cmd.global_lmt = priv->tx_power_lmt_in_half_dbm;
  76         }
  77         tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED;
  78         tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO;
  79
  80         if (IWL_UCODE_API(priv->ucode_ver) == 1)
  81                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1;
  82         else
  83                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
  84
  85         return iwl_trans_send_cmd_pdu(trans(priv), tx_ant_cfg_cmd, CMD_SYNC,
  86                         sizeof(tx_power_cmd), &tx_power_cmd);
  87 }
  88
  89 void iwlagn_temperature(struct iwl_priv *priv)
  90 {
  91         /* 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 u16 iwl_eeprom_calib_version(struct iwl_shared *shrd)
  97 {
  98         struct iwl_eeprom_calib_hdr *hdr;
  99
 100         hdr = (struct iwl_eeprom_calib_hdr *)iwl_eeprom_query_addr(shrd,
 101                                                         EEPROM_CALIB_ALL);
 102         return hdr->version;
 103
 104 }
 105
 106 /*
 107  * EEPROM
 108  */
 109 static u32 eeprom_indirect_address(const struct iwl_shared *shrd, u32 address)
 110 {
 111         u16 offset = 0;
 112
 113         if ((address & INDIRECT_ADDRESS) == 0)
 114                 return address;
 115
 116         switch (address & INDIRECT_TYPE_MSK) {
 117         case INDIRECT_HOST:
 118                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_HOST);
 119                 break;
 120         case INDIRECT_GENERAL:
 121                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_GENERAL);
 122                 break;
 123         case INDIRECT_REGULATORY:
 124                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_REGULATORY);
 125                 break;
 126         case INDIRECT_TXP_LIMIT:
 127                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_TXP_LIMIT);
 128                 break;
 129         case INDIRECT_TXP_LIMIT_SIZE:
 130                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_TXP_LIMIT_SIZE);
 131                 break;
 132         case INDIRECT_CALIBRATION:
 133                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_CALIBRATION);
 134                 break;
 135         case INDIRECT_PROCESS_ADJST:
 136                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_PROCESS_ADJST);
 137                 break;
 138         case INDIRECT_OTHERS:
 139                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_OTHERS);
 140                 break;
 141         default:
 142                 IWL_ERR(shrd->trans, "illegal indirect type: 0x%X\n",
 143                 address & INDIRECT_TYPE_MSK);
 144                 break;
 145         }
 146
 147         /* translate the offset from words to byte */
 148         return (address & ADDRESS_MSK) + (offset << 1);
 149 }
 150
 151 const u8 *iwl_eeprom_query_addr(const struct iwl_shared *shrd, size_t offset)
 152 {
 153         u32 address = eeprom_indirect_address(shrd, offset);
 154         BUG_ON(address >= shrd->cfg->base_params->eeprom_size);
 155         return &shrd->eeprom[address];
 156 }
 157
 158 struct iwl_mod_params iwlagn_mod_params = {
 159         .amsdu_size_8K = 1,
 160         .restart_fw = 1,
 161         .plcp_check = true,
 162         .bt_coex_active = true,
 163         .no_sleep_autoadjust = true,
 164         .power_level = IWL_POWER_INDEX_1,
 165         .bt_ch_announce = true,
 166         .wanted_ucode_alternative = 1,
 167         .auto_agg = true,
 168         /* the rest are 0 by default */
 169 };
 170
 171 int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
 172 {
 173         int idx = 0;
 174         int band_offset = 0;
 175
 176         /* HT rate format: mac80211 wants an MCS number, which is just LSB */
 177         if (rate_n_flags & RATE_MCS_HT_MSK) {
 178                 idx = (rate_n_flags & 0xff);
 179                 return idx;
 180         /* Legacy rate format, search for match in table */
 181         } else {
 182                 if (band == IEEE80211_BAND_5GHZ)
 183                         band_offset = IWL_FIRST_OFDM_RATE;
 184                 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
 185                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 186                                 return idx - band_offset;
 187         }
 188
 189         return -1;
 190 }
 191
 192 int iwlagn_manage_ibss_station(struct iwl_priv *priv,
 193                                struct ieee80211_vif *vif, bool add)
 194 {
 195         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
 196
 197         if (add)
 198                 return iwlagn_add_bssid_station(priv, vif_priv->ctx,
 199                                                 vif->bss_conf.bssid,
 200                                                 &vif_priv->ibss_bssid_sta_id);
 201         return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
 202                                   vif->bss_conf.bssid);
 203 }
 204
 205 /**
 206  * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode
 207  *
 208  * pre-requirements:
 209  *  1. acquire mutex before calling
 210  *  2. make sure rf is on and not in exit state
 211  */
 212 int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
 213 {
 214         struct iwl_txfifo_flush_cmd flush_cmd;
 215         struct iwl_host_cmd cmd = {
 216                 .id = REPLY_TXFIFO_FLUSH,
 217                 .len = { sizeof(struct iwl_txfifo_flush_cmd), },
 218                 .flags = CMD_SYNC,
 219                 .data = { &flush_cmd, },
 220         };
 221
 222         might_sleep();
 223
 224         memset(&flush_cmd, 0, sizeof(flush_cmd));
 225         if (flush_control & BIT(IWL_RXON_CTX_BSS))
 226                 flush_cmd.fifo_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
 227                                  IWL_SCD_BE_MSK | IWL_SCD_BK_MSK |
 228                                  IWL_SCD_MGMT_MSK;
 229         if ((flush_control & BIT(IWL_RXON_CTX_PAN)) &&
 230             (priv->shrd->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
 231                 flush_cmd.fifo_control |= IWL_PAN_SCD_VO_MSK |
 232                                 IWL_PAN_SCD_VI_MSK | IWL_PAN_SCD_BE_MSK |
 233                                 IWL_PAN_SCD_BK_MSK | IWL_PAN_SCD_MGMT_MSK |
 234                                 IWL_PAN_SCD_MULTICAST_MSK;
 235
 236         if (cfg(priv)->sku & EEPROM_SKU_CAP_11N_ENABLE)
 237                 flush_cmd.fifo_control |= IWL_AGG_TX_QUEUE_MSK;
 238
 239         IWL_DEBUG_INFO(priv, "fifo queue control: 0X%x\n",
 240                        flush_cmd.fifo_control);
 241         flush_cmd.flush_control = cpu_to_le16(flush_control);
 242
 243         return iwl_trans_send_cmd(trans(priv), &cmd);
 244 }
 245
 246 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
 247 {
 248         mutex_lock(&priv->shrd->mutex);
 249         ieee80211_stop_queues(priv->hw);
 250         if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
 251                 IWL_ERR(priv, "flush request fail\n");
 252                 goto done;
 253         }
 254         IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
 255         iwl_trans_wait_tx_queue_empty(trans(priv));
 256 done:
 257         ieee80211_wake_queues(priv->hw);
 258         mutex_unlock(&priv->shrd->mutex);
 259 }
 260
 261 /*
 262  * BT coex
 263  */
 264 /*
 265  * Macros to access the lookup table.
 266  *
 267  * The lookup table has 7 inputs: bt3_prio, bt3_txrx, bt_rf_act, wifi_req,
 268 * wifi_prio, wifi_txrx and wifi_sh_ant_req.
 269  *
 270  * It has three outputs: WLAN_ACTIVE, WLAN_KILL and ANT_SWITCH
 271  *
 272  * The format is that "registers" 8 through 11 contain the WLAN_ACTIVE bits
 273  * one after another in 32-bit registers, and "registers" 0 through 7 contain
 274  * the WLAN_KILL and ANT_SWITCH bits interleaved (in that order).
 275  *
 276  * These macros encode that format.
 277  */
 278 #define LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, wifi_req, wifi_prio, \
 279                   wifi_txrx, wifi_sh_ant_req) \
 280         (bt3_prio | (bt3_txrx << 1) | (bt_rf_act << 2) | (wifi_req << 3) | \
 281         (wifi_prio << 4) | (wifi_txrx << 5) | (wifi_sh_ant_req << 6))
 282
 283 #define LUT_PTA_WLAN_ACTIVE_OP(lut, op, val) \
 284         lut[8 + ((val) >> 5)] op (cpu_to_le32(BIT((val) & 0x1f)))
 285 #define LUT_TEST_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 286                                  wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 287         (!!(LUT_PTA_WLAN_ACTIVE_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, \
 288                                    bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
 289                                    wifi_sh_ant_req))))
 290 #define LUT_SET_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 291                                 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 292         LUT_PTA_WLAN_ACTIVE_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, \
 293                                bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
 294                                wifi_sh_ant_req))
 295 #define LUT_CLEAR_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, \
 296                                   wifi_req, wifi_prio, wifi_txrx, \
 297                                   wifi_sh_ant_req) \
 298         LUT_PTA_WLAN_ACTIVE_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, \
 299                                bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
 300                                wifi_sh_ant_req))
 301
 302 #define LUT_WLAN_KILL_OP(lut, op, val) \
 303         lut[(val) >> 4] op (cpu_to_le32(BIT(((val) << 1) & 0x1e)))
 304 #define LUT_TEST_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 305                            wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 306         (!!(LUT_WLAN_KILL_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
 307                              wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))))
 308 #define LUT_SET_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 309                           wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 310         LUT_WLAN_KILL_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
 311                          wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
 312 #define LUT_CLEAR_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 313                             wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 314         LUT_WLAN_KILL_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
 315                          wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
 316
 317 #define LUT_ANT_SWITCH_OP(lut, op, val) \
 318         lut[(val) >> 4] op (cpu_to_le32(BIT((((val) << 1) & 0x1e) + 1)))
 319 #define LUT_TEST_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 320                             wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 321         (!!(LUT_ANT_SWITCH_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
 322                               wifi_req, wifi_prio, wifi_txrx, \
 323                               wifi_sh_ant_req))))
 324 #define LUT_SET_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 325                            wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 326         LUT_ANT_SWITCH_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
 327                           wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
 328 #define LUT_CLEAR_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 329                              wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 330         LUT_ANT_SWITCH_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
 331                           wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
 332
 333 static const __le32 iwlagn_def_3w_lookup[12] = {
 334         cpu_to_le32(0xaaaaaaaa),
 335         cpu_to_le32(0xaaaaaaaa),
 336         cpu_to_le32(0xaeaaaaaa),
 337         cpu_to_le32(0xaaaaaaaa),
 338         cpu_to_le32(0xcc00ff28),
 339         cpu_to_le32(0x0000aaaa),
 340         cpu_to_le32(0xcc00aaaa),
 341         cpu_to_le32(0x0000aaaa),
 342         cpu_to_le32(0xc0004000),
 343         cpu_to_le32(0x00004000),
 344         cpu_to_le32(0xf0005000),
 345         cpu_to_le32(0xf0005000),
 346 };
 347
 348 static const __le32 iwlagn_concurrent_lookup[12] = {
 349         cpu_to_le32(0xaaaaaaaa),
 350         cpu_to_le32(0xaaaaaaaa),
 351         cpu_to_le32(0xaaaaaaaa),
 352         cpu_to_le32(0xaaaaaaaa),
 353         cpu_to_le32(0xaaaaaaaa),
 354         cpu_to_le32(0xaaaaaaaa),
 355         cpu_to_le32(0xaaaaaaaa),
 356         cpu_to_le32(0xaaaaaaaa),
 357         cpu_to_le32(0x00000000),
 358         cpu_to_le32(0x00000000),
 359         cpu_to_le32(0x00000000),
 360         cpu_to_le32(0x00000000),
 361 };
 362
 363 void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
 364 {
 365         struct iwl_basic_bt_cmd basic = {
 366                 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
 367                 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
 368                 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
 369                 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
 370         };
 371         struct iwl6000_bt_cmd bt_cmd_6000;
 372         struct iwl2000_bt_cmd bt_cmd_2000;
 373         int ret;
 374
 375         BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
 376                         sizeof(basic.bt3_lookup_table));
 377
 378         if (cfg(priv)->bt_params) {
 379                 if (cfg(priv)->bt_params->bt_session_2) {
 380                         bt_cmd_2000.prio_boost = cpu_to_le32(
 381                                 cfg(priv)->bt_params->bt_prio_boost);
 382                         bt_cmd_2000.tx_prio_boost = 0;
 383                         bt_cmd_2000.rx_prio_boost = 0;
 384                 } else {
 385                         bt_cmd_6000.prio_boost =
 386                                 cfg(priv)->bt_params->bt_prio_boost;
 387                         bt_cmd_6000.tx_prio_boost = 0;
 388                         bt_cmd_6000.rx_prio_boost = 0;
 389                 }
 390         } else {
 391                 IWL_ERR(priv, "failed to construct BT Coex Config\n");
 392                 return;
 393         }
 394
 395         basic.kill_ack_mask = priv->kill_ack_mask;
 396         basic.kill_cts_mask = priv->kill_cts_mask;
 397         basic.valid = priv->bt_valid;
 398
 399         /*
 400          * Configure BT coex mode to "no coexistence" when the
 401          * user disabled BT coexistence, we have no interface
 402          * (might be in monitor mode), or the interface is in
 403          * IBSS mode (no proper uCode support for coex then).
 404          */
 405         if (!iwlagn_mod_params.bt_coex_active ||
 406             priv->iw_mode == NL80211_IFTYPE_ADHOC) {
 407                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
 408         } else {
 409                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
 410                                         IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
 411
 412                 if (!priv->bt_enable_pspoll)
 413                         basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 414                 else
 415                         basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 416
 417                 if (priv->bt_ch_announce)
 418                         basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
 419                 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
 420         }
 421         priv->bt_enable_flag = basic.flags;
 422         if (priv->bt_full_concurrent)
 423                 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
 424                         sizeof(iwlagn_concurrent_lookup));
 425         else
 426                 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
 427                         sizeof(iwlagn_def_3w_lookup));
 428
 429         IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
 430                        basic.flags ? "active" : "disabled",
 431                        priv->bt_full_concurrent ?
 432                        "full concurrency" : "3-wire");
 433
 434         if (cfg(priv)->bt_params->bt_session_2) {
 435                 memcpy(&bt_cmd_2000.basic, &basic,
 436                         sizeof(basic));
 437                 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_BT_CONFIG,
 438                         CMD_SYNC, sizeof(bt_cmd_2000), &bt_cmd_2000);
 439         } else {
 440                 memcpy(&bt_cmd_6000.basic, &basic,
 441                         sizeof(basic));
 442                 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_BT_CONFIG,
 443                         CMD_SYNC, sizeof(bt_cmd_6000), &bt_cmd_6000);
 444         }
 445         if (ret)
 446                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 447
 448 }
 449
 450 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
 451 {
 452         struct iwl_rxon_context *ctx, *found_ctx = NULL;
 453         bool found_ap = false;
 454
 455         lockdep_assert_held(&priv->shrd->mutex);
 456
 457         /* Check whether AP or GO mode is active. */
 458         if (rssi_ena) {
 459                 for_each_context(priv, ctx) {
 460                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
 461                             iwl_is_associated_ctx(ctx)) {
 462                                 found_ap = true;
 463                                 break;
 464                         }
 465                 }
 466         }
 467
 468         /*
 469          * If disable was received or If GO/AP mode, disable RSSI
 470          * measurements.
 471          */
 472         if (!rssi_ena || found_ap) {
 473                 if (priv->cur_rssi_ctx) {
 474                         ctx = priv->cur_rssi_ctx;
 475                         ieee80211_disable_rssi_reports(ctx->vif);
 476                         priv->cur_rssi_ctx = NULL;
 477                 }
 478                 return;
 479         }
 480
 481         /*
 482          * If rssi measurements need to be enabled, consider all cases now.
 483          * Figure out how many contexts are active.
 484          */
 485         for_each_context(priv, ctx) {
 486                 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
 487                     iwl_is_associated_ctx(ctx)) {
 488                         found_ctx = ctx;
 489                         break;
 490                 }
 491         }
 492
 493         /*
 494          * rssi monitor already enabled for the correct interface...nothing
 495          * to do.
 496          */
 497         if (found_ctx == priv->cur_rssi_ctx)
 498                 return;
 499
 500         /*
 501          * Figure out if rssi monitor is currently enabled, and needs
 502          * to be changed. If rssi monitor is already enabled, disable
 503          * it first else just enable rssi measurements on the
 504          * interface found above.
 505          */
 506         if (priv->cur_rssi_ctx) {
 507                 ctx = priv->cur_rssi_ctx;
 508                 if (ctx->vif)
 509                         ieee80211_disable_rssi_reports(ctx->vif);
 510         }
 511
 512         priv->cur_rssi_ctx = found_ctx;
 513
 514         if (!found_ctx)
 515                 return;
 516
 517         ieee80211_enable_rssi_reports(found_ctx->vif,
 518                         IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
 519                         IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
 520 }
 521
 522 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
 523 {
 524         return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >>
 525                         BT_UART_MSG_FRAME3SCOESCO_POS;
 526 }
 527
 528 static void iwlagn_bt_traffic_change_work(struct work_struct *work)
 529 {
 530         struct iwl_priv *priv =
 531                 container_of(work, struct iwl_priv, bt_traffic_change_work);
 532         struct iwl_rxon_context *ctx;
 533         int smps_request = -1;
 534
 535         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 536                 /* bt coex disabled */
 537                 return;
 538         }
 539
 540         /*
 541          * Note: bt_traffic_load can be overridden by scan complete and
 542          * coex profile notifications. Ignore that since only bad consequence
 543          * can be not matching debug print with actual state.
 544          */
 545         IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
 546                        priv->bt_traffic_load);
 547
 548         switch (priv->bt_traffic_load) {
 549         case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
 550                 if (priv->bt_status)
 551                         smps_request = IEEE80211_SMPS_DYNAMIC;
 552                 else
 553                         smps_request = IEEE80211_SMPS_AUTOMATIC;
 554                 break;
 555         case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
 556                 smps_request = IEEE80211_SMPS_DYNAMIC;
 557                 break;
 558         case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
 559         case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
 560                 smps_request = IEEE80211_SMPS_STATIC;
 561                 break;
 562         default:
 563                 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
 564                         priv->bt_traffic_load);
 565                 break;
 566         }
 567
 568         mutex_lock(&priv->shrd->mutex);
 569
 570         /*
 571          * We can not send command to firmware while scanning. When the scan
 572          * complete we will schedule this work again. We do check with mutex
 573          * locked to prevent new scan request to arrive. We do not check
 574          * STATUS_SCANNING to avoid race when queue_work two times from
 575          * different notifications, but quit and not perform any work at all.
 576          */
 577         if (test_bit(STATUS_SCAN_HW, &priv->shrd->status))
 578                 goto out;
 579
 580         iwl_update_chain_flags(priv);
 581
 582         if (smps_request != -1) {
 583                 priv->current_ht_config.smps = smps_request;
 584                 for_each_context(priv, ctx) {
 585                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
 586                                 ieee80211_request_smps(ctx->vif, smps_request);
 587                 }
 588         }
 589
 590         /*
 591          * Dynamic PS poll related functionality. Adjust RSSI measurements if
 592          * necessary.
 593          */
 594         iwlagn_bt_coex_rssi_monitor(priv);
 595 out:
 596         mutex_unlock(&priv->shrd->mutex);
 597 }
 598
 599 /*
 600  * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
 601  * correct interface or disable it if this is the last interface to be
 602  * removed.
 603  */
 604 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
 605 {
 606         if (priv->bt_is_sco &&
 607             priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
 608                 iwlagn_bt_adjust_rssi_monitor(priv, true);
 609         else
 610                 iwlagn_bt_adjust_rssi_monitor(priv, false);
 611 }
 612
 613 static void iwlagn_print_uartmsg(struct iwl_priv *priv,
 614                                 struct iwl_bt_uart_msg *uart_msg)
 615 {
 616         IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
 617                         "Update Req = 0x%X",
 618                 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
 619                         BT_UART_MSG_FRAME1MSGTYPE_POS,
 620                 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
 621                         BT_UART_MSG_FRAME1SSN_POS,
 622                 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
 623                         BT_UART_MSG_FRAME1UPDATEREQ_POS);
 624
 625         IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
 626                         "Chl_SeqN = 0x%X, In band = 0x%X",
 627                 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
 628                         BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
 629                 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
 630                         BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
 631                 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
 632                         BT_UART_MSG_FRAME2CHLSEQN_POS,
 633                 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
 634                         BT_UART_MSG_FRAME2INBAND_POS);
 635
 636         IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
 637                         "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X",
 638                 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 639                         BT_UART_MSG_FRAME3SCOESCO_POS,
 640                 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
 641                         BT_UART_MSG_FRAME3SNIFF_POS,
 642                 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
 643                         BT_UART_MSG_FRAME3A2DP_POS,
 644                 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
 645                         BT_UART_MSG_FRAME3ACL_POS,
 646                 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
 647                         BT_UART_MSG_FRAME3MASTER_POS,
 648                 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
 649                         BT_UART_MSG_FRAME3OBEX_POS);
 650
 651         IWL_DEBUG_COEX(priv, "Idle duration = 0x%X",
 652                 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
 653                         BT_UART_MSG_FRAME4IDLEDURATION_POS);
 654
 655         IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
 656                         "eSCO Retransmissions = 0x%X",
 657                 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
 658                         BT_UART_MSG_FRAME5TXACTIVITY_POS,
 659                 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
 660                         BT_UART_MSG_FRAME5RXACTIVITY_POS,
 661                 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
 662                         BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
 663
 664         IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X",
 665                 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
 666                         BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
 667                 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
 668                         BT_UART_MSG_FRAME6DISCOVERABLE_POS);
 669
 670         IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
 671                         "0x%X, Inquiry = 0x%X, Connectable = 0x%X",
 672                 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
 673                         BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
 674                 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
 675                         BT_UART_MSG_FRAME7PAGE_POS,
 676                 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
 677                         BT_UART_MSG_FRAME7INQUIRY_POS,
 678                 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
 679                         BT_UART_MSG_FRAME7CONNECTABLE_POS);
 680 }
 681
 682 static void iwlagn_set_kill_msk(struct iwl_priv *priv,
 683                                 struct iwl_bt_uart_msg *uart_msg)
 684 {
 685         u8 kill_msk;
 686         static const __le32 bt_kill_ack_msg[2] = {
 687                 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
 688                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO };
 689         static const __le32 bt_kill_cts_msg[2] = {
 690                 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
 691                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO };
 692
 693         kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
 694                 ? 1 : 0;
 695         if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
 696             priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
 697                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
 698                 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
 699                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
 700                 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
 701
 702                 /* schedule to send runtime bt_config */
 703                 queue_work(priv->shrd->workqueue, &priv->bt_runtime_config);
 704         }
 705 }
 706
 707 int iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
 708                                   struct iwl_rx_mem_buffer *rxb,
 709                                   struct iwl_device_cmd *cmd)
 710 {
 711         unsigned long flags;
 712         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 713         struct iwl_bt_coex_profile_notif *coex = &pkt->u.bt_coex_profile_notif;
 714         struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
 715
 716         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 717                 /* bt coex disabled */
 718                 return 0;
 719         }
 720
 721         IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
 722         IWL_DEBUG_COEX(priv, "    status: %d\n", coex->bt_status);
 723         IWL_DEBUG_COEX(priv, "    traffic load: %d\n", coex->bt_traffic_load);
 724         IWL_DEBUG_COEX(priv, "    CI compliance: %d\n",
 725                         coex->bt_ci_compliance);
 726         iwlagn_print_uartmsg(priv, uart_msg);
 727
 728         priv->last_bt_traffic_load = priv->bt_traffic_load;
 729         priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
 730
 731         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
 732                 if (priv->bt_status != coex->bt_status ||
 733                     priv->last_bt_traffic_load != coex->bt_traffic_load) {
 734                         if (coex->bt_status) {
 735                                 /* BT on */
 736                                 if (!priv->bt_ch_announce)
 737                                         priv->bt_traffic_load =
 738                                                 IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
 739                                 else
 740                                         priv->bt_traffic_load =
 741                                                 coex->bt_traffic_load;
 742                         } else {
 743                                 /* BT off */
 744                                 priv->bt_traffic_load =
 745                                         IWL_BT_COEX_TRAFFIC_LOAD_NONE;
 746                         }
 747                         priv->bt_status = coex->bt_status;
 748                         queue_work(priv->shrd->workqueue,
 749                                    &priv->bt_traffic_change_work);
 750                 }
 751         }
 752
 753         iwlagn_set_kill_msk(priv, uart_msg);
 754
 755         /* FIXME: based on notification, adjust the prio_boost */
 756
 757         spin_lock_irqsave(&priv->shrd->lock, flags);
 758         priv->bt_ci_compliance = coex->bt_ci_compliance;
 759         spin_unlock_irqrestore(&priv->shrd->lock, flags);
 760         return 0;
 761 }
 762
 763 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
 764 {
 765         priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
 766                 iwlagn_bt_coex_profile_notif;
 767 }
 768
 769 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
 770 {
 771         INIT_WORK(&priv->bt_traffic_change_work,
 772                   iwlagn_bt_traffic_change_work);
 773 }
 774
 775 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
 776 {
 777         cancel_work_sync(&priv->bt_traffic_change_work);
 778 }
 779
 780 static bool is_single_rx_stream(struct iwl_priv *priv)
 781 {
 782         return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
 783                priv->current_ht_config.single_chain_sufficient;
 784 }
 785
 786 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 787 #define IWL_NUM_RX_CHAINS_SINGLE        2
 788 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 789 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 790
 791 /*
 792  * Determine how many receiver/antenna chains to use.
 793  *
 794  * More provides better reception via diversity.  Fewer saves power
 795  * at the expense of throughput, but only when not in powersave to
 796  * start with.
 797  *
 798  * MIMO (dual stream) requires at least 2, but works better with 3.
 799  * This does not determine *which* chains to use, just how many.
 800  */
 801 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 802 {
 803         if (cfg(priv)->bt_params &&
 804             cfg(priv)->bt_params->advanced_bt_coexist &&
 805             (priv->bt_full_concurrent ||
 806              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 807                 /*
 808                  * only use chain 'A' in bt high traffic load or
 809                  * full concurrency mode
 810                  */
 811                 return IWL_NUM_RX_CHAINS_SINGLE;
 812         }
 813         /* # of Rx chains to use when expecting MIMO. */
 814         if (is_single_rx_stream(priv))
 815                 return IWL_NUM_RX_CHAINS_SINGLE;
 816         else
 817                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 818 }
 819
 820 /*
 821  * When we are in power saving mode, unless device support spatial
 822  * multiplexing power save, use the active count for rx chain count.
 823  */
 824 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 825 {
 826         /* # Rx chains when idling, depending on SMPS mode */
 827         switch (priv->current_ht_config.smps) {
 828         case IEEE80211_SMPS_STATIC:
 829         case IEEE80211_SMPS_DYNAMIC:
 830                 return IWL_NUM_IDLE_CHAINS_SINGLE;
 831         case IEEE80211_SMPS_AUTOMATIC:
 832         case IEEE80211_SMPS_OFF:
 833                 return active_cnt;
 834         default:
 835                 WARN(1, "invalid SMPS mode %d",
 836                      priv->current_ht_config.smps);
 837                 return active_cnt;
 838         }
 839 }
 840
 841 /* up to 4 chains */
 842 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
 843 {
 844         u8 res;
 845         res = (chain_bitmap & BIT(0)) >> 0;
 846         res += (chain_bitmap & BIT(1)) >> 1;
 847         res += (chain_bitmap & BIT(2)) >> 2;
 848         res += (chain_bitmap & BIT(3)) >> 3;
 849         return res;
 850 }
 851
 852 /**
 853  * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
 854  *
 855  * Selects how many and which Rx receivers/antennas/chains to use.
 856  * This should not be used for scan command ... it puts data in wrong place.
 857  */
 858 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 859 {
 860         bool is_single = is_single_rx_stream(priv);
 861         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->shrd->status);
 862         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
 863         u32 active_chains;
 864         u16 rx_chain;
 865
 866         /* Tell uCode which antennas are actually connected.
 867          * Before first association, we assume all antennas are connected.
 868          * Just after first association, iwl_chain_noise_calibration()
 869          *    checks which antennas actually *are* connected. */
 870         if (priv->chain_noise_data.active_chains)
 871                 active_chains = priv->chain_noise_data.active_chains;
 872         else
 873                 active_chains = hw_params(priv).valid_rx_ant;
 874
 875         if (cfg(priv)->bt_params &&
 876             cfg(priv)->bt_params->advanced_bt_coexist &&
 877             (priv->bt_full_concurrent ||
 878              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 879                 /*
 880                  * only use chain 'A' in bt high traffic load or
 881                  * full concurrency mode
 882                  */
 883                 active_chains = first_antenna(active_chains);
 884         }
 885
 886         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
 887
 888         /* How many receivers should we use? */
 889         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
 890         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
 891
 892
 893         /* correct rx chain count according hw settings
 894          * and chain noise calibration
 895          */
 896         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
 897         if (valid_rx_cnt < active_rx_cnt)
 898                 active_rx_cnt = valid_rx_cnt;
 899
 900         if (valid_rx_cnt < idle_rx_cnt)
 901                 idle_rx_cnt = valid_rx_cnt;
 902
 903         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
 904         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
 905
 906         ctx->staging.rx_chain = cpu_to_le16(rx_chain);
 907
 908         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
 909                 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
 910         else
 911                 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
 912
 913         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
 914                         ctx->staging.rx_chain,
 915                         active_rx_cnt, idle_rx_cnt);
 916
 917         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
 918                 active_rx_cnt < idle_rx_cnt);
 919 }
 920
 921 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
 922 {
 923         int i;
 924         u8 ind = ant;
 925
 926         if (priv->band == IEEE80211_BAND_2GHZ &&
 927             priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
 928                 return 0;
 929
 930         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 931                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 932                 if (valid & BIT(ind))
 933                         return ind;
 934         }
 935         return ant;
 936 }
 937
 938 #ifdef CONFIG_PM_SLEEP
 939 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
 940 {
 941         int i;
 942
 943         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
 944                 out[i] = cpu_to_le16(p1k[i]);
 945 }
 946
 947 struct wowlan_key_data {
 948         struct iwl_rxon_context *ctx;
 949         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
 950         struct iwlagn_wowlan_tkip_params_cmd *tkip;
 951         const u8 *bssid;
 952         bool error, use_rsc_tsc, use_tkip;
 953 };
 954
 955
 956 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
 957                                struct ieee80211_vif *vif,
 958                                struct ieee80211_sta *sta,
 959                                struct ieee80211_key_conf *key,
 960                                void *_data)
 961 {
 962         struct iwl_priv *priv = hw->priv;
 963         struct wowlan_key_data *data = _data;
 964         struct iwl_rxon_context *ctx = data->ctx;
 965         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
 966         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 967         struct iwlagn_p1k_cache *rx_p1ks;
 968         u8 *rx_mic_key;
 969         struct ieee80211_key_seq seq;
 970         u32 cur_rx_iv32 = 0;
 971         u16 p1k[IWLAGN_P1K_SIZE];
 972         int ret, i;
 973
 974         mutex_lock(&priv->shrd->mutex);
 975
 976         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 977              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 978              !sta && !ctx->key_mapping_keys)
 979                 ret = iwl_set_default_wep_key(priv, ctx, key);
 980         else
 981                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
 982
 983         if (ret) {
 984                 IWL_ERR(priv, "Error setting key during suspend!\n");
 985                 data->error = true;
 986         }
 987
 988         switch (key->cipher) {
 989         case WLAN_CIPHER_SUITE_TKIP:
 990                 if (sta) {
 991                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
 992                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
 993
 994                         rx_p1ks = data->tkip->rx_uni;
 995
 996                         ieee80211_get_key_tx_seq(key, &seq);
 997                         tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
 998                         tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
 999
1000                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
1001                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
1002
1003                         memcpy(data->tkip->mic_keys.tx,
1004                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
1005                                IWLAGN_MIC_KEY_SIZE);
1006
1007                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
1008                 } else {
1009                         tkip_sc =
1010                                 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
1011                         rx_p1ks = data->tkip->rx_multi;
1012                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
1013                 }
1014
1015                 /*
1016                  * For non-QoS this relies on the fact that both the uCode and
1017                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
1018                  * for checking the IV in the frames.
1019                  */
1020                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1021                         ieee80211_get_key_rx_seq(key, i, &seq);
1022                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
1023                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
1024                         /* wrapping isn't allowed, AP must rekey */
1025                         if (seq.tkip.iv32 > cur_rx_iv32)
1026                                 cur_rx_iv32 = seq.tkip.iv32;
1027                 }
1028
1029                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
1030                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
1031                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
1032                                           cur_rx_iv32 + 1, p1k);
1033                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
1034
1035                 memcpy(rx_mic_key,
1036                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
1037                        IWLAGN_MIC_KEY_SIZE);
1038
1039                 data->use_tkip = true;
1040                 data->use_rsc_tsc = true;
1041                 break;
1042         case WLAN_CIPHER_SUITE_CCMP:
1043                 if (sta) {
1044                         u8 *pn = seq.ccmp.pn;
1045
1046                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
1047                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
1048
1049                         ieee80211_get_key_tx_seq(key, &seq);
1050                         aes_tx_sc->pn = cpu_to_le64(
1051                                         (u64)pn[5] |
1052                                         ((u64)pn[4] << 8) |
1053                                         ((u64)pn[3] << 16) |
1054                                         ((u64)pn[2] << 24) |
1055                                         ((u64)pn[1] << 32) |
1056                                         ((u64)pn[0] << 40));
1057                 } else
1058                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
1059
1060                 /*
1061                  * For non-QoS this relies on the fact that both the uCode and
1062                  * mac80211 use TID 0 for checking the IV in the frames.
1063                  */
1064                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1065                         u8 *pn = seq.ccmp.pn;
1066
1067                         ieee80211_get_key_rx_seq(key, i, &seq);
1068                         aes_sc->pn = cpu_to_le64(
1069                                         (u64)pn[5] |
1070                                         ((u64)pn[4] << 8) |
1071                                         ((u64)pn[3] << 16) |
1072                                         ((u64)pn[2] << 24) |
1073                                         ((u64)pn[1] << 32) |
1074                                         ((u64)pn[0] << 40));
1075                 }
1076                 data->use_rsc_tsc = true;
1077                 break;
1078         }
1079
1080         mutex_unlock(&priv->shrd->mutex);
1081 }
1082
1083 int iwlagn_send_patterns(struct iwl_priv *priv,
1084                         struct cfg80211_wowlan *wowlan)
1085 {
1086         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1087         struct iwl_host_cmd cmd = {
1088                 .id = REPLY_WOWLAN_PATTERNS,
1089                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1090                 .flags = CMD_SYNC,
1091         };
1092         int i, err;
1093
1094         if (!wowlan->n_patterns)
1095                 return 0;
1096
1097         cmd.len[0] = sizeof(*pattern_cmd) +
1098                 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1099
1100         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1101         if (!pattern_cmd)
1102                 return -ENOMEM;
1103
1104         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1105
1106         for (i = 0; i < wowlan->n_patterns; i++) {
1107                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1108
1109                 memcpy(&pattern_cmd->patterns[i].mask,
1110                         wowlan->patterns[i].mask, mask_len);
1111                 memcpy(&pattern_cmd->patterns[i].pattern,
1112                         wowlan->patterns[i].pattern,
1113                         wowlan->patterns[i].pattern_len);
1114                 pattern_cmd->patterns[i].mask_size = mask_len;
1115                 pattern_cmd->patterns[i].pattern_size =
1116                         wowlan->patterns[i].pattern_len;
1117         }
1118
1119         cmd.data[0] = pattern_cmd;
1120         err = iwl_trans_send_cmd(trans(priv), &cmd);
1121         kfree(pattern_cmd);
1122         return err;
1123 }
1124
1125 int iwlagn_suspend(struct iwl_priv *priv,
1126                 struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1127 {
1128         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
1129         struct iwl_rxon_cmd rxon;
1130         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1131         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
1132         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
1133         struct iwlagn_d3_config_cmd d3_cfg_cmd = {};
1134         struct wowlan_key_data key_data = {
1135                 .ctx = ctx,
1136                 .bssid = ctx->active.bssid_addr,
1137                 .use_rsc_tsc = false,
1138                 .tkip = &tkip_cmd,
1139                 .use_tkip = false,
1140         };
1141         int ret, i;
1142         u16 seq;
1143
1144         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1145         if (!key_data.rsc_tsc)
1146                 return -ENOMEM;
1147
1148         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1149
1150         /*
1151          * We know the last used seqno, and the uCode expects to know that
1152          * one, it will increment before TX.
1153          */
1154         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1155         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1156
1157         /*
1158          * For QoS counters, we store the one to use next, so subtract 0x10
1159          * since the uCode will add 0x10 before using the value.
1160          */
1161         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1162                 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1163                 seq -= 0x10;
1164                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1165         }
1166
1167         if (wowlan->disconnect)
1168                 wakeup_filter_cmd.enabled |=
1169                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1170                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1171         if (wowlan->magic_pkt)
1172                 wakeup_filter_cmd.enabled |=
1173                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1174         if (wowlan->gtk_rekey_failure)
1175                 wakeup_filter_cmd.enabled |=
1176                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1177         if (wowlan->eap_identity_req)
1178                 wakeup_filter_cmd.enabled |=
1179                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1180         if (wowlan->four_way_handshake)
1181                 wakeup_filter_cmd.enabled |=
1182                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1183         if (wowlan->n_patterns)
1184                 wakeup_filter_cmd.enabled |=
1185                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1186
1187         if (wowlan->rfkill_release)
1188                 d3_cfg_cmd.wakeup_flags |=
1189                         cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1190
1191         iwl_scan_cancel_timeout(priv, 200);
1192
1193         memcpy(&rxon, &ctx->active, sizeof(rxon));
1194
1195         iwl_trans_stop_device(trans(priv));
1196
1197         priv->shrd->wowlan = true;
1198
1199         ret = iwl_load_ucode_wait_alive(trans(priv), IWL_UCODE_WOWLAN);
1200         if (ret)
1201                 goto out;
1202
1203         /* now configure WoWLAN ucode */
1204         ret = iwl_alive_start(priv);
1205         if (ret)
1206                 goto out;
1207
1208         memcpy(&ctx->staging, &rxon, sizeof(rxon));
1209         ret = iwlagn_commit_rxon(priv, ctx);
1210         if (ret)
1211                 goto out;
1212
1213         ret = iwl_power_update_mode(priv, true);
1214         if (ret)
1215                 goto out;
1216
1217         if (!iwlagn_mod_params.sw_crypto) {
1218                 /* mark all keys clear */
1219                 priv->ucode_key_table = 0;
1220                 ctx->key_mapping_keys = 0;
1221
1222                 /*
1223                  * This needs to be unlocked due to lock ordering
1224                  * constraints. Since we're in the suspend path
1225                  * that isn't really a problem though.
1226                  */
1227                 mutex_unlock(&priv->shrd->mutex);
1228                 ieee80211_iter_keys(priv->hw, ctx->vif,
1229                                     iwlagn_wowlan_program_keys,
1230                                     &key_data);
1231                 mutex_lock(&priv->shrd->mutex);
1232                 if (key_data.error) {
1233                         ret = -EIO;
1234                         goto out;
1235                 }
1236
1237                 if (key_data.use_rsc_tsc) {
1238                         struct iwl_host_cmd rsc_tsc_cmd = {
1239                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1240                                 .flags = CMD_SYNC,
1241                                 .data[0] = key_data.rsc_tsc,
1242                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1243                                 .len[0] = sizeof(*key_data.rsc_tsc),
1244                         };
1245
1246                         ret = iwl_trans_send_cmd(trans(priv), &rsc_tsc_cmd);
1247                         if (ret)
1248                                 goto out;
1249                 }
1250
1251                 if (key_data.use_tkip) {
1252                         ret = iwl_trans_send_cmd_pdu(trans(priv),
1253                                                  REPLY_WOWLAN_TKIP_PARAMS,
1254                                                  CMD_SYNC, sizeof(tkip_cmd),
1255                                                  &tkip_cmd);
1256                         if (ret)
1257                                 goto out;
1258                 }
1259
1260                 if (priv->have_rekey_data) {
1261                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1262                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1263                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1264                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1265                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1266                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
1267
1268                         ret = iwl_trans_send_cmd_pdu(trans(priv),
1269                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
1270                                                  CMD_SYNC, sizeof(kek_kck_cmd),
1271                                                  &kek_kck_cmd);
1272                         if (ret)
1273                                 goto out;
1274                 }
1275         }
1276
1277         ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_D3_CONFIG, CMD_SYNC,
1278                                      sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1279         if (ret)
1280                 goto out;
1281
1282         ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_WAKEUP_FILTER,
1283                                  CMD_SYNC, sizeof(wakeup_filter_cmd),
1284                                  &wakeup_filter_cmd);
1285         if (ret)
1286                 goto out;
1287
1288         ret = iwlagn_send_patterns(priv, wowlan);
1289  out:
1290         kfree(key_data.rsc_tsc);
1291         return ret;
1292 }
1293 #endif