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-core.h"
  37 #include "iwl-io.h"
  38 #include "iwl-agn-hw.h"
  39 #include "iwl-agn.h"
  40 #include "iwl-trans.h"
  41 #include "iwl-shared.h"
  42
  43 int iwlagn_hw_valid_rtc_data_addr(u32 addr)
  44 {
  45         return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) &&
  46                 (addr < IWLAGN_RTC_DATA_UPPER_BOUND);
  47 }
  48
  49 int iwlagn_send_tx_power(struct iwl_priv *priv)
  50 {
  51         struct iwlagn_tx_power_dbm_cmd tx_power_cmd;
  52         u8 tx_ant_cfg_cmd;
  53
  54         if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
  55                       "TX Power requested while scanning!\n"))
  56                 return -EAGAIN;
  57
  58         /* half dBm need to multiply */
  59         tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
  60
  61         if (priv->tx_power_lmt_in_half_dbm &&
  62             priv->tx_power_lmt_in_half_dbm < tx_power_cmd.global_lmt) {
  63                 /*
  64                  * For the newer devices which using enhanced/extend tx power
  65                  * table in EEPROM, the format is in half dBm. driver need to
  66                  * convert to dBm format before report to mac80211.
  67                  * By doing so, there is a possibility of 1/2 dBm resolution
  68                  * lost. driver will perform "round-up" operation before
  69                  * reporting, but it will cause 1/2 dBm tx power over the
  70                  * regulatory limit. Perform the checking here, if the
  71                  * "tx_power_user_lmt" is higher than EEPROM value (in
  72                  * half-dBm format), lower the tx power based on EEPROM
  73                  */
  74                 tx_power_cmd.global_lmt = priv->tx_power_lmt_in_half_dbm;
  75         }
  76         tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED;
  77         tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO;
  78
  79         if (IWL_UCODE_API(priv->fw->ucode_ver) == 1)
  80                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1;
  81         else
  82                 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
  83
  84         return iwl_dvm_send_cmd_pdu(priv, tx_ant_cfg_cmd, CMD_SYNC,
  85                         sizeof(tx_power_cmd), &tx_power_cmd);
  86 }
  87
  88 void iwlagn_temperature(struct iwl_priv *priv)
  89 {
  90         lockdep_assert_held(&priv->statistics.lock);
  91
  92         /* store temperature from correct statistics (in Celsius) */
  93         priv->temperature = le32_to_cpu(priv->statistics.common.temperature);
  94         iwl_tt_handler(priv);
  95 }
  96
  97 u16 iwl_eeprom_calib_version(struct iwl_shared *shrd)
  98 {
  99         struct iwl_eeprom_calib_hdr *hdr;
 100
 101         hdr = (struct iwl_eeprom_calib_hdr *)iwl_eeprom_query_addr(shrd,
 102                                                         EEPROM_CALIB_ALL);
 103         return hdr->version;
 104
 105 }
 106
 107 /*
 108  * EEPROM
 109  */
 110 static u32 eeprom_indirect_address(const struct iwl_shared *shrd, u32 address)
 111 {
 112         u16 offset = 0;
 113
 114         if ((address & INDIRECT_ADDRESS) == 0)
 115                 return address;
 116
 117         switch (address & INDIRECT_TYPE_MSK) {
 118         case INDIRECT_HOST:
 119                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_HOST);
 120                 break;
 121         case INDIRECT_GENERAL:
 122                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_GENERAL);
 123                 break;
 124         case INDIRECT_REGULATORY:
 125                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_REGULATORY);
 126                 break;
 127         case INDIRECT_TXP_LIMIT:
 128                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_TXP_LIMIT);
 129                 break;
 130         case INDIRECT_TXP_LIMIT_SIZE:
 131                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_TXP_LIMIT_SIZE);
 132                 break;
 133         case INDIRECT_CALIBRATION:
 134                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_CALIBRATION);
 135                 break;
 136         case INDIRECT_PROCESS_ADJST:
 137                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_PROCESS_ADJST);
 138                 break;
 139         case INDIRECT_OTHERS:
 140                 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_OTHERS);
 141                 break;
 142         default:
 143                 IWL_ERR(shrd->trans, "illegal indirect type: 0x%X\n",
 144                 address & INDIRECT_TYPE_MSK);
 145                 break;
 146         }
 147
 148         /* translate the offset from words to byte */
 149         return (address & ADDRESS_MSK) + (offset << 1);
 150 }
 151
 152 const u8 *iwl_eeprom_query_addr(const struct iwl_shared *shrd, size_t offset)
 153 {
 154         u32 address = eeprom_indirect_address(shrd, offset);
 155         BUG_ON(address >= shrd->cfg->base_params->eeprom_size);
 156         return &shrd->eeprom[address];
 157 }
 158
 159 struct iwl_mod_params iwlagn_mod_params = {
 160         .amsdu_size_8K = 1,
 161         .restart_fw = 1,
 162         .plcp_check = true,
 163         .bt_coex_active = true,
 164         .no_sleep_autoadjust = true,
 165         .power_level = IWL_POWER_INDEX_1,
 166         .bt_ch_announce = true,
 167         .wanted_ucode_alternative = 1,
 168         .auto_agg = true,
 169         /* the rest are 0 by default */
 170 };
 171
 172 int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
 173 {
 174         int idx = 0;
 175         int band_offset = 0;
 176
 177         /* HT rate format: mac80211 wants an MCS number, which is just LSB */
 178         if (rate_n_flags & RATE_MCS_HT_MSK) {
 179                 idx = (rate_n_flags & 0xff);
 180                 return idx;
 181         /* Legacy rate format, search for match in table */
 182         } else {
 183                 if (band == IEEE80211_BAND_5GHZ)
 184                         band_offset = IWL_FIRST_OFDM_RATE;
 185                 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
 186                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 187                                 return idx - band_offset;
 188         }
 189
 190         return -1;
 191 }
 192
 193 int iwlagn_manage_ibss_station(struct iwl_priv *priv,
 194                                struct ieee80211_vif *vif, bool add)
 195 {
 196         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
 197
 198         if (add)
 199                 return iwlagn_add_bssid_station(priv, vif_priv->ctx,
 200                                                 vif->bss_conf.bssid,
 201                                                 &vif_priv->ibss_bssid_sta_id);
 202         return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
 203                                   vif->bss_conf.bssid);
 204 }
 205
 206 /**
 207  * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode
 208  *
 209  * pre-requirements:
 210  *  1. acquire mutex before calling
 211  *  2. make sure rf is on and not in exit state
 212  */
 213 int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
 214 {
 215         struct iwl_txfifo_flush_cmd flush_cmd;
 216         struct iwl_host_cmd cmd = {
 217                 .id = REPLY_TXFIFO_FLUSH,
 218                 .len = { sizeof(struct iwl_txfifo_flush_cmd), },
 219                 .flags = CMD_SYNC,
 220                 .data = { &flush_cmd, },
 221         };
 222
 223         might_sleep();
 224
 225         memset(&flush_cmd, 0, sizeof(flush_cmd));
 226         if (flush_control & BIT(IWL_RXON_CTX_BSS))
 227                 flush_cmd.fifo_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
 228                                  IWL_SCD_BE_MSK | IWL_SCD_BK_MSK |
 229                                  IWL_SCD_MGMT_MSK;
 230         if ((flush_control & BIT(IWL_RXON_CTX_PAN)) &&
 231             (priv->shrd->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
 232                 flush_cmd.fifo_control |= IWL_PAN_SCD_VO_MSK |
 233                                 IWL_PAN_SCD_VI_MSK | IWL_PAN_SCD_BE_MSK |
 234                                 IWL_PAN_SCD_BK_MSK | IWL_PAN_SCD_MGMT_MSK |
 235                                 IWL_PAN_SCD_MULTICAST_MSK;
 236
 237         if (hw_params(priv).sku & EEPROM_SKU_CAP_11N_ENABLE)
 238                 flush_cmd.fifo_control |= IWL_AGG_TX_QUEUE_MSK;
 239
 240         IWL_DEBUG_INFO(priv, "fifo queue control: 0X%x\n",
 241                        flush_cmd.fifo_control);
 242         flush_cmd.flush_control = cpu_to_le16(flush_control);
 243
 244         return iwl_dvm_send_cmd(priv, &cmd);
 245 }
 246
 247 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
 248 {
 249         mutex_lock(&priv->mutex);
 250         ieee80211_stop_queues(priv->hw);
 251         if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
 252                 IWL_ERR(priv, "flush request fail\n");
 253                 goto done;
 254         }
 255         IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
 256         iwl_trans_wait_tx_queue_empty(trans(priv));
 257 done:
 258         ieee80211_wake_queues(priv->hw);
 259         mutex_unlock(&priv->mutex);
 260 }
 261
 262 /*
 263  * BT coex
 264  */
 265 /*
 266  * Macros to access the lookup table.
 267  *
 268  * The lookup table has 7 inputs: bt3_prio, bt3_txrx, bt_rf_act, wifi_req,
 269 * wifi_prio, wifi_txrx and wifi_sh_ant_req.
 270  *
 271  * It has three outputs: WLAN_ACTIVE, WLAN_KILL and ANT_SWITCH
 272  *
 273  * The format is that "registers" 8 through 11 contain the WLAN_ACTIVE bits
 274  * one after another in 32-bit registers, and "registers" 0 through 7 contain
 275  * the WLAN_KILL and ANT_SWITCH bits interleaved (in that order).
 276  *
 277  * These macros encode that format.
 278  */
 279 #define LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, wifi_req, wifi_prio, \
 280                   wifi_txrx, wifi_sh_ant_req) \
 281         (bt3_prio | (bt3_txrx << 1) | (bt_rf_act << 2) | (wifi_req << 3) | \
 282         (wifi_prio << 4) | (wifi_txrx << 5) | (wifi_sh_ant_req << 6))
 283
 284 #define LUT_PTA_WLAN_ACTIVE_OP(lut, op, val) \
 285         lut[8 + ((val) >> 5)] op (cpu_to_le32(BIT((val) & 0x1f)))
 286 #define LUT_TEST_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 287                                  wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 288         (!!(LUT_PTA_WLAN_ACTIVE_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, \
 289                                    bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
 290                                    wifi_sh_ant_req))))
 291 #define LUT_SET_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 292                                 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 293         LUT_PTA_WLAN_ACTIVE_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, \
 294                                bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
 295                                wifi_sh_ant_req))
 296 #define LUT_CLEAR_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, \
 297                                   wifi_req, wifi_prio, wifi_txrx, \
 298                                   wifi_sh_ant_req) \
 299         LUT_PTA_WLAN_ACTIVE_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, \
 300                                bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
 301                                wifi_sh_ant_req))
 302
 303 #define LUT_WLAN_KILL_OP(lut, op, val) \
 304         lut[(val) >> 4] op (cpu_to_le32(BIT(((val) << 1) & 0x1e)))
 305 #define LUT_TEST_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 306                            wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 307         (!!(LUT_WLAN_KILL_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
 308                              wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))))
 309 #define LUT_SET_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 310                           wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 311         LUT_WLAN_KILL_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
 312                          wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
 313 #define LUT_CLEAR_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 314                             wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 315         LUT_WLAN_KILL_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
 316                          wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
 317
 318 #define LUT_ANT_SWITCH_OP(lut, op, val) \
 319         lut[(val) >> 4] op (cpu_to_le32(BIT((((val) << 1) & 0x1e) + 1)))
 320 #define LUT_TEST_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 321                             wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 322         (!!(LUT_ANT_SWITCH_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
 323                               wifi_req, wifi_prio, wifi_txrx, \
 324                               wifi_sh_ant_req))))
 325 #define LUT_SET_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 326                            wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 327         LUT_ANT_SWITCH_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
 328                           wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
 329 #define LUT_CLEAR_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
 330                              wifi_prio, wifi_txrx, wifi_sh_ant_req) \
 331         LUT_ANT_SWITCH_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
 332                           wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
 333
 334 static const __le32 iwlagn_def_3w_lookup[12] = {
 335         cpu_to_le32(0xaaaaaaaa),
 336         cpu_to_le32(0xaaaaaaaa),
 337         cpu_to_le32(0xaeaaaaaa),
 338         cpu_to_le32(0xaaaaaaaa),
 339         cpu_to_le32(0xcc00ff28),
 340         cpu_to_le32(0x0000aaaa),
 341         cpu_to_le32(0xcc00aaaa),
 342         cpu_to_le32(0x0000aaaa),
 343         cpu_to_le32(0xc0004000),
 344         cpu_to_le32(0x00004000),
 345         cpu_to_le32(0xf0005000),
 346         cpu_to_le32(0xf0005000),
 347 };
 348
 349 static const __le32 iwlagn_concurrent_lookup[12] = {
 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(0xaaaaaaaa),
 358         cpu_to_le32(0x00000000),
 359         cpu_to_le32(0x00000000),
 360         cpu_to_le32(0x00000000),
 361         cpu_to_le32(0x00000000),
 362 };
 363
 364 void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
 365 {
 366         struct iwl_basic_bt_cmd basic = {
 367                 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
 368                 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
 369                 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
 370                 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
 371         };
 372         struct iwl6000_bt_cmd bt_cmd_6000;
 373         struct iwl2000_bt_cmd bt_cmd_2000;
 374         int ret;
 375
 376         BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
 377                         sizeof(basic.bt3_lookup_table));
 378
 379         if (cfg(priv)->bt_params) {
 380                 if (cfg(priv)->bt_params->bt_session_2) {
 381                         bt_cmd_2000.prio_boost = cpu_to_le32(
 382                                 cfg(priv)->bt_params->bt_prio_boost);
 383                         bt_cmd_2000.tx_prio_boost = 0;
 384                         bt_cmd_2000.rx_prio_boost = 0;
 385                 } else {
 386                         bt_cmd_6000.prio_boost =
 387                                 cfg(priv)->bt_params->bt_prio_boost;
 388                         bt_cmd_6000.tx_prio_boost = 0;
 389                         bt_cmd_6000.rx_prio_boost = 0;
 390                 }
 391         } else {
 392                 IWL_ERR(priv, "failed to construct BT Coex Config\n");
 393                 return;
 394         }
 395
 396         basic.kill_ack_mask = priv->kill_ack_mask;
 397         basic.kill_cts_mask = priv->kill_cts_mask;
 398         basic.valid = priv->bt_valid;
 399
 400         /*
 401          * Configure BT coex mode to "no coexistence" when the
 402          * user disabled BT coexistence, we have no interface
 403          * (might be in monitor mode), or the interface is in
 404          * IBSS mode (no proper uCode support for coex then).
 405          */
 406         if (!iwlagn_mod_params.bt_coex_active ||
 407             priv->iw_mode == NL80211_IFTYPE_ADHOC) {
 408                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
 409         } else {
 410                 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
 411                                         IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
 412
 413                 if (!priv->bt_enable_pspoll)
 414                         basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 415                 else
 416                         basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 417
 418                 if (priv->bt_ch_announce)
 419                         basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
 420                 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
 421         }
 422         priv->bt_enable_flag = basic.flags;
 423         if (priv->bt_full_concurrent)
 424                 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
 425                         sizeof(iwlagn_concurrent_lookup));
 426         else
 427                 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
 428                         sizeof(iwlagn_def_3w_lookup));
 429
 430         IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
 431                        basic.flags ? "active" : "disabled",
 432                        priv->bt_full_concurrent ?
 433                        "full concurrency" : "3-wire");
 434
 435         if (cfg(priv)->bt_params->bt_session_2) {
 436                 memcpy(&bt_cmd_2000.basic, &basic,
 437                         sizeof(basic));
 438                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 439                         CMD_SYNC, sizeof(bt_cmd_2000), &bt_cmd_2000);
 440         } else {
 441                 memcpy(&bt_cmd_6000.basic, &basic,
 442                         sizeof(basic));
 443                 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 444                         CMD_SYNC, sizeof(bt_cmd_6000), &bt_cmd_6000);
 445         }
 446         if (ret)
 447                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 448
 449 }
 450
 451 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
 452 {
 453         struct iwl_rxon_context *ctx, *found_ctx = NULL;
 454         bool found_ap = false;
 455
 456         lockdep_assert_held(&priv->mutex);
 457
 458         /* Check whether AP or GO mode is active. */
 459         if (rssi_ena) {
 460                 for_each_context(priv, ctx) {
 461                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
 462                             iwl_is_associated_ctx(ctx)) {
 463                                 found_ap = true;
 464                                 break;
 465                         }
 466                 }
 467         }
 468
 469         /*
 470          * If disable was received or If GO/AP mode, disable RSSI
 471          * measurements.
 472          */
 473         if (!rssi_ena || found_ap) {
 474                 if (priv->cur_rssi_ctx) {
 475                         ctx = priv->cur_rssi_ctx;
 476                         ieee80211_disable_rssi_reports(ctx->vif);
 477                         priv->cur_rssi_ctx = NULL;
 478                 }
 479                 return;
 480         }
 481
 482         /*
 483          * If rssi measurements need to be enabled, consider all cases now.
 484          * Figure out how many contexts are active.
 485          */
 486         for_each_context(priv, ctx) {
 487                 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
 488                     iwl_is_associated_ctx(ctx)) {
 489                         found_ctx = ctx;
 490                         break;
 491                 }
 492         }
 493
 494         /*
 495          * rssi monitor already enabled for the correct interface...nothing
 496          * to do.
 497          */
 498         if (found_ctx == priv->cur_rssi_ctx)
 499                 return;
 500
 501         /*
 502          * Figure out if rssi monitor is currently enabled, and needs
 503          * to be changed. If rssi monitor is already enabled, disable
 504          * it first else just enable rssi measurements on the
 505          * interface found above.
 506          */
 507         if (priv->cur_rssi_ctx) {
 508                 ctx = priv->cur_rssi_ctx;
 509                 if (ctx->vif)
 510                         ieee80211_disable_rssi_reports(ctx->vif);
 511         }
 512
 513         priv->cur_rssi_ctx = found_ctx;
 514
 515         if (!found_ctx)
 516                 return;
 517
 518         ieee80211_enable_rssi_reports(found_ctx->vif,
 519                         IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
 520                         IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
 521 }
 522
 523 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
 524 {
 525         return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >>
 526                         BT_UART_MSG_FRAME3SCOESCO_POS;
 527 }
 528
 529 static void iwlagn_bt_traffic_change_work(struct work_struct *work)
 530 {
 531         struct iwl_priv *priv =
 532                 container_of(work, struct iwl_priv, bt_traffic_change_work);
 533         struct iwl_rxon_context *ctx;
 534         int smps_request = -1;
 535
 536         if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 537                 /* bt coex disabled */
 538                 return;
 539         }
 540
 541         /*
 542          * Note: bt_traffic_load can be overridden by scan complete and
 543          * coex profile notifications. Ignore that since only bad consequence
 544          * can be not matching debug print with actual state.
 545          */
 546         IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
 547                        priv->bt_traffic_load);
 548
 549         switch (priv->bt_traffic_load) {
 550         case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
 551                 if (priv->bt_status)
 552                         smps_request = IEEE80211_SMPS_DYNAMIC;
 553                 else
 554                         smps_request = IEEE80211_SMPS_AUTOMATIC;
 555                 break;
 556         case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
 557                 smps_request = IEEE80211_SMPS_DYNAMIC;
 558                 break;
 559         case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
 560         case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
 561                 smps_request = IEEE80211_SMPS_STATIC;
 562                 break;
 563         default:
 564                 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
 565                         priv->bt_traffic_load);
 566                 break;
 567         }
 568
 569         mutex_lock(&priv->mutex);
 570
 571         /*
 572          * We can not send command to firmware while scanning. When the scan
 573          * complete we will schedule this work again. We do check with mutex
 574          * locked to prevent new scan request to arrive. We do not check
 575          * STATUS_SCANNING to avoid race when queue_work two times from
 576          * different notifications, but quit and not perform any work at all.
 577          */
 578         if (test_bit(STATUS_SCAN_HW, &priv->status))
 579                 goto out;
 580
 581         iwl_update_chain_flags(priv);
 582
 583         if (smps_request != -1) {
 584                 priv->current_ht_config.smps = smps_request;
 585                 for_each_context(priv, ctx) {
 586                         if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
 587                                 ieee80211_request_smps(ctx->vif, smps_request);
 588                 }
 589         }
 590
 591         /*
 592          * Dynamic PS poll related functionality. Adjust RSSI measurements if
 593          * necessary.
 594          */
 595         iwlagn_bt_coex_rssi_monitor(priv);
 596 out:
 597         mutex_unlock(&priv->mutex);
 598 }
 599
 600 /*
 601  * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
 602  * correct interface or disable it if this is the last interface to be
 603  * removed.
 604  */
 605 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
 606 {
 607         if (priv->bt_is_sco &&
 608             priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
 609                 iwlagn_bt_adjust_rssi_monitor(priv, true);
 610         else
 611                 iwlagn_bt_adjust_rssi_monitor(priv, false);
 612 }
 613
 614 static void iwlagn_print_uartmsg(struct iwl_priv *priv,
 615                                 struct iwl_bt_uart_msg *uart_msg)
 616 {
 617         IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
 618                         "Update Req = 0x%X",
 619                 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
 620                         BT_UART_MSG_FRAME1MSGTYPE_POS,
 621                 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
 622                         BT_UART_MSG_FRAME1SSN_POS,
 623                 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
 624                         BT_UART_MSG_FRAME1UPDATEREQ_POS);
 625
 626         IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
 627                         "Chl_SeqN = 0x%X, In band = 0x%X",
 628                 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
 629                         BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
 630                 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
 631                         BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
 632                 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
 633                         BT_UART_MSG_FRAME2CHLSEQN_POS,
 634                 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
 635                         BT_UART_MSG_FRAME2INBAND_POS);
 636
 637         IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
 638                         "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X",
 639                 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 640                         BT_UART_MSG_FRAME3SCOESCO_POS,
 641                 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
 642                         BT_UART_MSG_FRAME3SNIFF_POS,
 643                 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
 644                         BT_UART_MSG_FRAME3A2DP_POS,
 645                 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
 646                         BT_UART_MSG_FRAME3ACL_POS,
 647                 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
 648                         BT_UART_MSG_FRAME3MASTER_POS,
 649                 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
 650                         BT_UART_MSG_FRAME3OBEX_POS);
 651
 652         IWL_DEBUG_COEX(priv, "Idle duration = 0x%X",
 653                 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
 654                         BT_UART_MSG_FRAME4IDLEDURATION_POS);
 655
 656         IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
 657                         "eSCO Retransmissions = 0x%X",
 658                 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
 659                         BT_UART_MSG_FRAME5TXACTIVITY_POS,
 660                 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
 661                         BT_UART_MSG_FRAME5RXACTIVITY_POS,
 662                 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
 663                         BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
 664
 665         IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X",
 666                 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
 667                         BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
 668                 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
 669                         BT_UART_MSG_FRAME6DISCOVERABLE_POS);
 670
 671         IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
 672                         "0x%X, Inquiry = 0x%X, Connectable = 0x%X",
 673                 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
 674                         BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
 675                 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
 676                         BT_UART_MSG_FRAME7PAGE_POS,
 677                 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
 678                         BT_UART_MSG_FRAME7INQUIRY_POS,
 679                 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
 680                         BT_UART_MSG_FRAME7CONNECTABLE_POS);
 681 }
 682
 683 static void iwlagn_set_kill_msk(struct iwl_priv *priv,
 684                                 struct iwl_bt_uart_msg *uart_msg)
 685 {
 686         u8 kill_msk;
 687         static const __le32 bt_kill_ack_msg[2] = {
 688                 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
 689                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO };
 690         static const __le32 bt_kill_cts_msg[2] = {
 691                 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
 692                 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO };
 693
 694         kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
 695                 ? 1 : 0;
 696         if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
 697             priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
 698                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
 699                 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
 700                 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
 701                 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
 702
 703                 /* schedule to send runtime bt_config */
 704                 queue_work(priv->workqueue, &priv->bt_runtime_config);
 705         }
 706 }
 707
 708 int iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
 709                                   struct iwl_rx_cmd_buffer *rxb,
 710                                   struct iwl_device_cmd *cmd)
 711 {
 712         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 713         struct iwl_bt_coex_profile_notif *coex = (void *)pkt->data;
 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->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         priv->bt_ci_compliance = coex->bt_ci_compliance;
 758         return 0;
 759 }
 760
 761 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
 762 {
 763         priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
 764                 iwlagn_bt_coex_profile_notif;
 765 }
 766
 767 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
 768 {
 769         INIT_WORK(&priv->bt_traffic_change_work,
 770                   iwlagn_bt_traffic_change_work);
 771 }
 772
 773 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
 774 {
 775         cancel_work_sync(&priv->bt_traffic_change_work);
 776 }
 777
 778 static bool is_single_rx_stream(struct iwl_priv *priv)
 779 {
 780         return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
 781                priv->current_ht_config.single_chain_sufficient;
 782 }
 783
 784 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 785 #define IWL_NUM_RX_CHAINS_SINGLE        2
 786 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 787 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 788
 789 /*
 790  * Determine how many receiver/antenna chains to use.
 791  *
 792  * More provides better reception via diversity.  Fewer saves power
 793  * at the expense of throughput, but only when not in powersave to
 794  * start with.
 795  *
 796  * MIMO (dual stream) requires at least 2, but works better with 3.
 797  * This does not determine *which* chains to use, just how many.
 798  */
 799 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 800 {
 801         if (cfg(priv)->bt_params &&
 802             cfg(priv)->bt_params->advanced_bt_coexist &&
 803             (priv->bt_full_concurrent ||
 804              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 805                 /*
 806                  * only use chain 'A' in bt high traffic load or
 807                  * full concurrency mode
 808                  */
 809                 return IWL_NUM_RX_CHAINS_SINGLE;
 810         }
 811         /* # of Rx chains to use when expecting MIMO. */
 812         if (is_single_rx_stream(priv))
 813                 return IWL_NUM_RX_CHAINS_SINGLE;
 814         else
 815                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 816 }
 817
 818 /*
 819  * When we are in power saving mode, unless device support spatial
 820  * multiplexing power save, use the active count for rx chain count.
 821  */
 822 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 823 {
 824         /* # Rx chains when idling, depending on SMPS mode */
 825         switch (priv->current_ht_config.smps) {
 826         case IEEE80211_SMPS_STATIC:
 827         case IEEE80211_SMPS_DYNAMIC:
 828                 return IWL_NUM_IDLE_CHAINS_SINGLE;
 829         case IEEE80211_SMPS_AUTOMATIC:
 830         case IEEE80211_SMPS_OFF:
 831                 return active_cnt;
 832         default:
 833                 WARN(1, "invalid SMPS mode %d",
 834                      priv->current_ht_config.smps);
 835                 return active_cnt;
 836         }
 837 }
 838
 839 /* up to 4 chains */
 840 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
 841 {
 842         u8 res;
 843         res = (chain_bitmap & BIT(0)) >> 0;
 844         res += (chain_bitmap & BIT(1)) >> 1;
 845         res += (chain_bitmap & BIT(2)) >> 2;
 846         res += (chain_bitmap & BIT(3)) >> 3;
 847         return res;
 848 }
 849
 850 /**
 851  * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
 852  *
 853  * Selects how many and which Rx receivers/antennas/chains to use.
 854  * This should not be used for scan command ... it puts data in wrong place.
 855  */
 856 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 857 {
 858         bool is_single = is_single_rx_stream(priv);
 859         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->shrd->status);
 860         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
 861         u32 active_chains;
 862         u16 rx_chain;
 863
 864         /* Tell uCode which antennas are actually connected.
 865          * Before first association, we assume all antennas are connected.
 866          * Just after first association, iwl_chain_noise_calibration()
 867          *    checks which antennas actually *are* connected. */
 868         if (priv->chain_noise_data.active_chains)
 869                 active_chains = priv->chain_noise_data.active_chains;
 870         else
 871                 active_chains = hw_params(priv).valid_rx_ant;
 872
 873         if (cfg(priv)->bt_params &&
 874             cfg(priv)->bt_params->advanced_bt_coexist &&
 875             (priv->bt_full_concurrent ||
 876              priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 877                 /*
 878                  * only use chain 'A' in bt high traffic load or
 879                  * full concurrency mode
 880                  */
 881                 active_chains = first_antenna(active_chains);
 882         }
 883
 884         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
 885
 886         /* How many receivers should we use? */
 887         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
 888         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
 889
 890
 891         /* correct rx chain count according hw settings
 892          * and chain noise calibration
 893          */
 894         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
 895         if (valid_rx_cnt < active_rx_cnt)
 896                 active_rx_cnt = valid_rx_cnt;
 897
 898         if (valid_rx_cnt < idle_rx_cnt)
 899                 idle_rx_cnt = valid_rx_cnt;
 900
 901         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
 902         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
 903
 904         ctx->staging.rx_chain = cpu_to_le16(rx_chain);
 905
 906         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
 907                 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
 908         else
 909                 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
 910
 911         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
 912                         ctx->staging.rx_chain,
 913                         active_rx_cnt, idle_rx_cnt);
 914
 915         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
 916                 active_rx_cnt < idle_rx_cnt);
 917 }
 918
 919 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
 920 {
 921         int i;
 922         u8 ind = ant;
 923
 924         if (priv->band == IEEE80211_BAND_2GHZ &&
 925             priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
 926                 return 0;
 927
 928         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 929                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 930                 if (valid & BIT(ind))
 931                         return ind;
 932         }
 933         return ant;
 934 }
 935
 936 #ifdef CONFIG_PM_SLEEP
 937 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
 938 {
 939         int i;
 940
 941         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
 942                 out[i] = cpu_to_le16(p1k[i]);
 943 }
 944
 945 struct wowlan_key_data {
 946         struct iwl_rxon_context *ctx;
 947         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
 948         struct iwlagn_wowlan_tkip_params_cmd *tkip;
 949         const u8 *bssid;
 950         bool error, use_rsc_tsc, use_tkip;
 951 };
 952
 953
 954 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
 955                                struct ieee80211_vif *vif,
 956                                struct ieee80211_sta *sta,
 957                                struct ieee80211_key_conf *key,
 958                                void *_data)
 959 {
 960         struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 961         struct wowlan_key_data *data = _data;
 962         struct iwl_rxon_context *ctx = data->ctx;
 963         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
 964         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 965         struct iwlagn_p1k_cache *rx_p1ks;
 966         u8 *rx_mic_key;
 967         struct ieee80211_key_seq seq;
 968         u32 cur_rx_iv32 = 0;
 969         u16 p1k[IWLAGN_P1K_SIZE];
 970         int ret, i;
 971
 972         mutex_lock(&priv->mutex);
 973
 974         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 975              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 976              !sta && !ctx->key_mapping_keys)
 977                 ret = iwl_set_default_wep_key(priv, ctx, key);
 978         else
 979                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
 980
 981         if (ret) {
 982                 IWL_ERR(priv, "Error setting key during suspend!\n");
 983                 data->error = true;
 984         }
 985
 986         switch (key->cipher) {
 987         case WLAN_CIPHER_SUITE_TKIP:
 988                 if (sta) {
 989                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
 990                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
 991
 992                         rx_p1ks = data->tkip->rx_uni;
 993
 994                         ieee80211_get_key_tx_seq(key, &seq);
 995                         tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
 996                         tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
 997
 998                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
 999                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
1000
1001                         memcpy(data->tkip->mic_keys.tx,
1002                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
1003                                IWLAGN_MIC_KEY_SIZE);
1004
1005                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
1006                 } else {
1007                         tkip_sc =
1008                                 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
1009                         rx_p1ks = data->tkip->rx_multi;
1010                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
1011                 }
1012
1013                 /*
1014                  * For non-QoS this relies on the fact that both the uCode and
1015                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
1016                  * for checking the IV in the frames.
1017                  */
1018                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1019                         ieee80211_get_key_rx_seq(key, i, &seq);
1020                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
1021                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
1022                         /* wrapping isn't allowed, AP must rekey */
1023                         if (seq.tkip.iv32 > cur_rx_iv32)
1024                                 cur_rx_iv32 = seq.tkip.iv32;
1025                 }
1026
1027                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
1028                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
1029                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
1030                                           cur_rx_iv32 + 1, p1k);
1031                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
1032
1033                 memcpy(rx_mic_key,
1034                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
1035                        IWLAGN_MIC_KEY_SIZE);
1036
1037                 data->use_tkip = true;
1038                 data->use_rsc_tsc = true;
1039                 break;
1040         case WLAN_CIPHER_SUITE_CCMP:
1041                 if (sta) {
1042                         u8 *pn = seq.ccmp.pn;
1043
1044                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
1045                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
1046
1047                         ieee80211_get_key_tx_seq(key, &seq);
1048                         aes_tx_sc->pn = cpu_to_le64(
1049                                         (u64)pn[5] |
1050                                         ((u64)pn[4] << 8) |
1051                                         ((u64)pn[3] << 16) |
1052                                         ((u64)pn[2] << 24) |
1053                                         ((u64)pn[1] << 32) |
1054                                         ((u64)pn[0] << 40));
1055                 } else
1056                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
1057
1058                 /*
1059                  * For non-QoS this relies on the fact that both the uCode and
1060                  * mac80211 use TID 0 for checking the IV in the frames.
1061                  */
1062                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1063                         u8 *pn = seq.ccmp.pn;
1064
1065                         ieee80211_get_key_rx_seq(key, i, &seq);
1066                         aes_sc->pn = cpu_to_le64(
1067                                         (u64)pn[5] |
1068                                         ((u64)pn[4] << 8) |
1069                                         ((u64)pn[3] << 16) |
1070                                         ((u64)pn[2] << 24) |
1071                                         ((u64)pn[1] << 32) |
1072                                         ((u64)pn[0] << 40));
1073                 }
1074                 data->use_rsc_tsc = true;
1075                 break;
1076         }
1077
1078         mutex_unlock(&priv->mutex);
1079 }
1080
1081 int iwlagn_send_patterns(struct iwl_priv *priv,
1082                         struct cfg80211_wowlan *wowlan)
1083 {
1084         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1085         struct iwl_host_cmd cmd = {
1086                 .id = REPLY_WOWLAN_PATTERNS,
1087                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1088                 .flags = CMD_SYNC,
1089         };
1090         int i, err;
1091
1092         if (!wowlan->n_patterns)
1093                 return 0;
1094
1095         cmd.len[0] = sizeof(*pattern_cmd) +
1096                 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1097
1098         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1099         if (!pattern_cmd)
1100                 return -ENOMEM;
1101
1102         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1103
1104         for (i = 0; i < wowlan->n_patterns; i++) {
1105                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1106
1107                 memcpy(&pattern_cmd->patterns[i].mask,
1108                         wowlan->patterns[i].mask, mask_len);
1109                 memcpy(&pattern_cmd->patterns[i].pattern,
1110                         wowlan->patterns[i].pattern,
1111                         wowlan->patterns[i].pattern_len);
1112                 pattern_cmd->patterns[i].mask_size = mask_len;
1113                 pattern_cmd->patterns[i].pattern_size =
1114                         wowlan->patterns[i].pattern_len;
1115         }
1116
1117         cmd.data[0] = pattern_cmd;
1118         err = iwl_dvm_send_cmd(priv, &cmd);
1119         kfree(pattern_cmd);
1120         return err;
1121 }
1122
1123 int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan)
1124 {
1125         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
1126         struct iwl_rxon_cmd rxon;
1127         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1128         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
1129         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
1130         struct iwlagn_d3_config_cmd d3_cfg_cmd = {};
1131         struct wowlan_key_data key_data = {
1132                 .ctx = ctx,
1133                 .bssid = ctx->active.bssid_addr,
1134                 .use_rsc_tsc = false,
1135                 .tkip = &tkip_cmd,
1136                 .use_tkip = false,
1137         };
1138         int ret, i;
1139         u16 seq;
1140
1141         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1142         if (!key_data.rsc_tsc)
1143                 return -ENOMEM;
1144
1145         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1146
1147         /*
1148          * We know the last used seqno, and the uCode expects to know that
1149          * one, it will increment before TX.
1150          */
1151         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1152         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1153
1154         /*
1155          * For QoS counters, we store the one to use next, so subtract 0x10
1156          * since the uCode will add 0x10 before using the value.
1157          */
1158         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1159                 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1160                 seq -= 0x10;
1161                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1162         }
1163
1164         if (wowlan->disconnect)
1165                 wakeup_filter_cmd.enabled |=
1166                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1167                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1168         if (wowlan->magic_pkt)
1169                 wakeup_filter_cmd.enabled |=
1170                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1171         if (wowlan->gtk_rekey_failure)
1172                 wakeup_filter_cmd.enabled |=
1173                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1174         if (wowlan->eap_identity_req)
1175                 wakeup_filter_cmd.enabled |=
1176                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1177         if (wowlan->four_way_handshake)
1178                 wakeup_filter_cmd.enabled |=
1179                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1180         if (wowlan->n_patterns)
1181                 wakeup_filter_cmd.enabled |=
1182                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1183
1184         if (wowlan->rfkill_release)
1185                 d3_cfg_cmd.wakeup_flags |=
1186                         cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1187
1188         iwl_scan_cancel_timeout(priv, 200);
1189
1190         memcpy(&rxon, &ctx->active, sizeof(rxon));
1191
1192         iwl_trans_stop_device(trans(priv));
1193
1194         priv->wowlan = true;
1195
1196         ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
1197         if (ret)
1198                 goto out;
1199
1200         /* now configure WoWLAN ucode */
1201         ret = iwl_alive_start(priv);
1202         if (ret)
1203                 goto out;
1204
1205         memcpy(&ctx->staging, &rxon, sizeof(rxon));
1206         ret = iwlagn_commit_rxon(priv, ctx);
1207         if (ret)
1208                 goto out;
1209
1210         ret = iwl_power_update_mode(priv, true);
1211         if (ret)
1212                 goto out;
1213
1214         if (!iwlagn_mod_params.sw_crypto) {
1215                 /* mark all keys clear */
1216                 priv->ucode_key_table = 0;
1217                 ctx->key_mapping_keys = 0;
1218
1219                 /*
1220                  * This needs to be unlocked due to lock ordering
1221                  * constraints. Since we're in the suspend path
1222                  * that isn't really a problem though.
1223                  */
1224                 mutex_unlock(&priv->mutex);
1225                 ieee80211_iter_keys(priv->hw, ctx->vif,
1226                                     iwlagn_wowlan_program_keys,
1227                                     &key_data);
1228                 mutex_lock(&priv->mutex);
1229                 if (key_data.error) {
1230                         ret = -EIO;
1231                         goto out;
1232                 }
1233
1234                 if (key_data.use_rsc_tsc) {
1235                         struct iwl_host_cmd rsc_tsc_cmd = {
1236                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1237                                 .flags = CMD_SYNC,
1238                                 .data[0] = key_data.rsc_tsc,
1239                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1240                                 .len[0] = sizeof(key_data.rsc_tsc),
1241                         };
1242
1243                         ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd);
1244                         if (ret)
1245                                 goto out;
1246                 }
1247
1248                 if (key_data.use_tkip) {
1249                         ret = iwl_dvm_send_cmd_pdu(priv,
1250                                                  REPLY_WOWLAN_TKIP_PARAMS,
1251                                                  CMD_SYNC, sizeof(tkip_cmd),
1252                                                  &tkip_cmd);
1253                         if (ret)
1254                                 goto out;
1255                 }
1256
1257                 if (priv->have_rekey_data) {
1258                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1259                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1260                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1261                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1262                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1263                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
1264
1265                         ret = iwl_dvm_send_cmd_pdu(priv,
1266                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
1267                                                  CMD_SYNC, sizeof(kek_kck_cmd),
1268                                                  &kek_kck_cmd);
1269                         if (ret)
1270                                 goto out;
1271                 }
1272         }
1273
1274         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, CMD_SYNC,
1275                                      sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1276         if (ret)
1277                 goto out;
1278
1279         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER,
1280                                  CMD_SYNC, sizeof(wakeup_filter_cmd),
1281                                  &wakeup_filter_cmd);
1282         if (ret)
1283                 goto out;
1284
1285         ret = iwlagn_send_patterns(priv, wowlan);
1286  out:
1287         kfree(key_data.rsc_tsc);
1288         return ret;
1289 }
1290 #endif
1291
1292 int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
1293 {
1294         if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
1295                 IWL_WARN(priv, "Not sending command - %s KILL\n",
1296                          iwl_is_rfkill(priv) ? "RF" : "CT");
1297                 return -EIO;
1298         }
1299
1300         /*
1301          * Synchronous commands from this op-mode must hold
1302          * the mutex, this ensures we don't try to send two
1303          * (or more) synchronous commands at a time.
1304          */
1305         if (cmd->flags & CMD_SYNC)
1306                 lockdep_assert_held(&priv->mutex);
1307
1308         if (priv->ucode_owner == IWL_OWNERSHIP_TM &&
1309             !(cmd->flags & CMD_ON_DEMAND)) {
1310                 IWL_DEBUG_HC(priv, "tm own the uCode, no regular hcmd send\n");
1311                 return -EIO;
1312         }
1313
1314         return iwl_trans_send_cmd(trans(priv), cmd);
1315 }
1316
1317 int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id,
1318                          u32 flags, u16 len, const void *data)
1319 {
1320         struct iwl_host_cmd cmd = {
1321                 .id = id,
1322                 .len = { len, },
1323                 .data = { data, },
1324                 .flags = flags,
1325         };
1326
1327         return iwl_dvm_send_cmd(priv, &cmd);
1328 }