drivers/net/wireless/iwlwifi/iwl-core.c

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 - 2009 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/kernel.h>
  30 #include <linux/module.h>
  31 #include <linux/etherdevice.h>
  32 #include <net/mac80211.h>
  33
  34 #include "iwl-eeprom.h"
  35 #include "iwl-dev.h" /* FIXME: remove */
  36 #include "iwl-debug.h"
  37 #include "iwl-core.h"
  38 #include "iwl-io.h"
  39 #include "iwl-power.h"
  40 #include "iwl-sta.h"
  41 #include "iwl-helpers.h"
  42
  43
  44 MODULE_DESCRIPTION("iwl core");
  45 MODULE_VERSION(IWLWIFI_VERSION);
  46 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  47 MODULE_LICENSE("GPL");
  48
  49 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np)    \
  50         [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,      \
  51                                     IWL_RATE_SISO_##s##M_PLCP, \
  52                                     IWL_RATE_MIMO2_##s##M_PLCP,\
  53                                     IWL_RATE_MIMO3_##s##M_PLCP,\
  54                                     IWL_RATE_##r##M_IEEE,      \
  55                                     IWL_RATE_##ip##M_INDEX,    \
  56                                     IWL_RATE_##in##M_INDEX,    \
  57                                     IWL_RATE_##rp##M_INDEX,    \
  58                                     IWL_RATE_##rn##M_INDEX,    \
  59                                     IWL_RATE_##pp##M_INDEX,    \
  60                                     IWL_RATE_##np##M_INDEX }
  61
  62 u32 iwl_debug_level;
  63 EXPORT_SYMBOL(iwl_debug_level);
  64
  65 static irqreturn_t iwl_isr(int irq, void *data);
  66
  67 /*
  68  * Parameter order:
  69  *   rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
  70  *
  71  * If there isn't a valid next or previous rate then INV is used which
  72  * maps to IWL_RATE_INVALID
  73  *
  74  */
  75 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
  76         IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2),    /*  1mbps */
  77         IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5),          /*  2mbps */
  78         IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
  79         IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18),      /* 11mbps */
  80         IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
  81         IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11),       /*  9mbps */
  82         IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
  83         IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
  84         IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
  85         IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
  86         IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
  87         IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
  88         IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
  89         /* FIXME:RS:          ^^    should be INV (legacy) */
  90 };
  91 EXPORT_SYMBOL(iwl_rates);
  92
  93 /**
  94  * translate ucode response to mac80211 tx status control values
  95  */
  96 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
  97                                   struct ieee80211_tx_info *info)
  98 {
  99         struct ieee80211_tx_rate *r = &info->control.rates[0];
 100
 101         info->antenna_sel_tx =
 102                 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
 103         if (rate_n_flags & RATE_MCS_HT_MSK)
 104                 r->flags |= IEEE80211_TX_RC_MCS;
 105         if (rate_n_flags & RATE_MCS_GF_MSK)
 106                 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
 107         if (rate_n_flags & RATE_MCS_HT40_MSK)
 108                 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
 109         if (rate_n_flags & RATE_MCS_DUP_MSK)
 110                 r->flags |= IEEE80211_TX_RC_DUP_DATA;
 111         if (rate_n_flags & RATE_MCS_SGI_MSK)
 112                 r->flags |= IEEE80211_TX_RC_SHORT_GI;
 113         r->idx = iwl_hwrate_to_mac80211_idx(rate_n_flags, info->band);
 114 }
 115 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
 116
 117 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
 118 {
 119         int idx = 0;
 120
 121         /* HT rate format */
 122         if (rate_n_flags & RATE_MCS_HT_MSK) {
 123                 idx = (rate_n_flags & 0xff);
 124
 125                 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
 126                         idx = idx - IWL_RATE_MIMO3_6M_PLCP;
 127                 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
 128                         idx = idx - IWL_RATE_MIMO2_6M_PLCP;
 129
 130                 idx += IWL_FIRST_OFDM_RATE;
 131                 /* skip 9M not supported in ht*/
 132                 if (idx >= IWL_RATE_9M_INDEX)
 133                         idx += 1;
 134                 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
 135                         return idx;
 136
 137         /* legacy rate format, search for match in table */
 138         } else {
 139                 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
 140                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 141                                 return idx;
 142         }
 143
 144         return -1;
 145 }
 146 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
 147
 148 int iwl_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
 149 {
 150         int idx = 0;
 151         int band_offset = 0;
 152
 153         /* HT rate format: mac80211 wants an MCS number, which is just LSB */
 154         if (rate_n_flags & RATE_MCS_HT_MSK) {
 155                 idx = (rate_n_flags & 0xff);
 156                 return idx;
 157         /* Legacy rate format, search for match in table */
 158         } else {
 159                 if (band == IEEE80211_BAND_5GHZ)
 160                         band_offset = IWL_FIRST_OFDM_RATE;
 161                 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
 162                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 163                                 return idx - band_offset;
 164         }
 165
 166         return -1;
 167 }
 168
 169 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
 170 {
 171         int i;
 172         u8 ind = ant;
 173         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 174                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 175                 if (priv->hw_params.valid_tx_ant & BIT(ind))
 176                         return ind;
 177         }
 178         return ant;
 179 }
 180
 181 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 182 EXPORT_SYMBOL(iwl_bcast_addr);
 183
 184
 185 /* This function both allocates and initializes hw and priv. */
 186 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
 187                 struct ieee80211_ops *hw_ops)
 188 {
 189         struct iwl_priv *priv;
 190
 191         /* mac80211 allocates memory for this device instance, including
 192          *   space for this driver's private structure */
 193         struct ieee80211_hw *hw =
 194                 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
 195         if (hw == NULL) {
 196                 printk(KERN_ERR "%s: Can not allocate network device\n",
 197                        cfg->name);
 198                 goto out;
 199         }
 200
 201         priv = hw->priv;
 202         priv->hw = hw;
 203
 204 out:
 205         return hw;
 206 }
 207 EXPORT_SYMBOL(iwl_alloc_all);
 208
 209 void iwl_hw_detect(struct iwl_priv *priv)
 210 {
 211         priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
 212         priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
 213         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
 214 }
 215 EXPORT_SYMBOL(iwl_hw_detect);
 216
 217 int iwl_hw_nic_init(struct iwl_priv *priv)
 218 {
 219         unsigned long flags;
 220         struct iwl_rx_queue *rxq = &priv->rxq;
 221         int ret;
 222
 223         /* nic_init */
 224         spin_lock_irqsave(&priv->lock, flags);
 225         priv->cfg->ops->lib->apm_ops.init(priv);
 226         iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
 227         spin_unlock_irqrestore(&priv->lock, flags);
 228
 229         ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
 230
 231         priv->cfg->ops->lib->apm_ops.config(priv);
 232
 233         /* Allocate the RX queue, or reset if it is already allocated */
 234         if (!rxq->bd) {
 235                 ret = iwl_rx_queue_alloc(priv);
 236                 if (ret) {
 237                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
 238                         return -ENOMEM;
 239                 }
 240         } else
 241                 iwl_rx_queue_reset(priv, rxq);
 242
 243         iwl_rx_replenish(priv);
 244
 245         iwl_rx_init(priv, rxq);
 246
 247         spin_lock_irqsave(&priv->lock, flags);
 248
 249         rxq->need_update = 1;
 250         iwl_rx_queue_update_write_ptr(priv, rxq);
 251
 252         spin_unlock_irqrestore(&priv->lock, flags);
 253
 254         /* Allocate and init all Tx and Command queues */
 255         ret = iwl_txq_ctx_reset(priv);
 256         if (ret)
 257                 return ret;
 258
 259         set_bit(STATUS_INIT, &priv->status);
 260
 261         return 0;
 262 }
 263 EXPORT_SYMBOL(iwl_hw_nic_init);
 264
 265 /*
 266  * QoS  support
 267 */
 268 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 269 {
 270         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 271                 return;
 272
 273         priv->qos_data.def_qos_parm.qos_flags = 0;
 274
 275         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 276             !priv->qos_data.qos_cap.q_AP.txop_request)
 277                 priv->qos_data.def_qos_parm.qos_flags |=
 278                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 279         if (priv->qos_data.qos_active)
 280                 priv->qos_data.def_qos_parm.qos_flags |=
 281                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 282
 283         if (priv->current_ht_config.is_ht)
 284                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 285
 286         if (force || iwl_is_associated(priv)) {
 287                 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 288                                 priv->qos_data.qos_active,
 289                                 priv->qos_data.def_qos_parm.qos_flags);
 290
 291                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 292                                        sizeof(struct iwl_qosparam_cmd),
 293                                        &priv->qos_data.def_qos_parm, NULL);
 294         }
 295 }
 296 EXPORT_SYMBOL(iwl_activate_qos);
 297
 298 /*
 299  * AC        CWmin         CW max      AIFSN      TXOP Limit    TXOP Limit
 300  *                                              (802.11b)      (802.11a/g)
 301  * AC_BK      15            1023        7           0               0
 302  * AC_BE      15            1023        3           0               0
 303  * AC_VI       7              15        2          6.016ms       3.008ms
 304  * AC_VO       3               7        2          3.264ms       1.504ms
 305  */
 306 void iwl_reset_qos(struct iwl_priv *priv)
 307 {
 308         u16 cw_min = 15;
 309         u16 cw_max = 1023;
 310         u8 aifs = 2;
 311         bool is_legacy = false;
 312         unsigned long flags;
 313         int i;
 314
 315         spin_lock_irqsave(&priv->lock, flags);
 316         /* QoS always active in AP and ADHOC mode
 317          * In STA mode wait for association
 318          */
 319         if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
 320             priv->iw_mode == NL80211_IFTYPE_AP)
 321                 priv->qos_data.qos_active = 1;
 322         else
 323                 priv->qos_data.qos_active = 0;
 324
 325         /* check for legacy mode */
 326         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
 327             (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
 328             (priv->iw_mode == NL80211_IFTYPE_STATION &&
 329             (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
 330                 cw_min = 31;
 331                 is_legacy = 1;
 332         }
 333
 334         if (priv->qos_data.qos_active)
 335                 aifs = 3;
 336
 337         /* AC_BE */
 338         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
 339         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
 340         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
 341         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
 342         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
 343
 344         if (priv->qos_data.qos_active) {
 345                 /* AC_BK */
 346                 i = 1;
 347                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
 348                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
 349                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
 350                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
 351                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 352
 353                 /* AC_VI */
 354                 i = 2;
 355                 priv->qos_data.def_qos_parm.ac[i].cw_min =
 356                         cpu_to_le16((cw_min + 1) / 2 - 1);
 357                 priv->qos_data.def_qos_parm.ac[i].cw_max =
 358                         cpu_to_le16(cw_min);
 359                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
 360                 if (is_legacy)
 361                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 362                                 cpu_to_le16(6016);
 363                 else
 364                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 365                                 cpu_to_le16(3008);
 366                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 367
 368                 /* AC_VO */
 369                 i = 3;
 370                 priv->qos_data.def_qos_parm.ac[i].cw_min =
 371                         cpu_to_le16((cw_min + 1) / 4 - 1);
 372                 priv->qos_data.def_qos_parm.ac[i].cw_max =
 373                         cpu_to_le16((cw_min + 1) / 2 - 1);
 374                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
 375                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 376                 if (is_legacy)
 377                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 378                                 cpu_to_le16(3264);
 379                 else
 380                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 381                                 cpu_to_le16(1504);
 382         } else {
 383                 for (i = 1; i < 4; i++) {
 384                         priv->qos_data.def_qos_parm.ac[i].cw_min =
 385                                 cpu_to_le16(cw_min);
 386                         priv->qos_data.def_qos_parm.ac[i].cw_max =
 387                                 cpu_to_le16(cw_max);
 388                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
 389                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
 390                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 391                 }
 392         }
 393         IWL_DEBUG_QOS(priv, "set QoS to default \n");
 394
 395         spin_unlock_irqrestore(&priv->lock, flags);
 396 }
 397 EXPORT_SYMBOL(iwl_reset_qos);
 398
 399 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
 400 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
 401 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
 402                               struct ieee80211_sta_ht_cap *ht_info,
 403                               enum ieee80211_band band)
 404 {
 405         u16 max_bit_rate = 0;
 406         u8 rx_chains_num = priv->hw_params.rx_chains_num;
 407         u8 tx_chains_num = priv->hw_params.tx_chains_num;
 408
 409         ht_info->cap = 0;
 410         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
 411
 412         ht_info->ht_supported = true;
 413
 414         if (priv->cfg->ht_greenfield_support)
 415                 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
 416         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
 417         ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
 418                              (WLAN_HT_CAP_SM_PS_DISABLED << 2));
 419
 420         max_bit_rate = MAX_BIT_RATE_20_MHZ;
 421         if (priv->hw_params.ht40_channel & BIT(band)) {
 422                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 423                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
 424                 ht_info->mcs.rx_mask[4] = 0x01;
 425                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
 426         }
 427
 428         if (priv->cfg->mod_params->amsdu_size_8K)
 429                 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
 430
 431         ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
 432         ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
 433
 434         ht_info->mcs.rx_mask[0] = 0xFF;
 435         if (rx_chains_num >= 2)
 436                 ht_info->mcs.rx_mask[1] = 0xFF;
 437         if (rx_chains_num >= 3)
 438                 ht_info->mcs.rx_mask[2] = 0xFF;
 439
 440         /* Highest supported Rx data rate */
 441         max_bit_rate *= rx_chains_num;
 442         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
 443         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
 444
 445         /* Tx MCS capabilities */
 446         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 447         if (tx_chains_num != rx_chains_num) {
 448                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
 449                 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
 450                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
 451         }
 452 }
 453
 454 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
 455                               struct ieee80211_rate *rates)
 456 {
 457         int i;
 458
 459         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
 460                 rates[i].bitrate = iwl_rates[i].ieee * 5;
 461                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
 462                 rates[i].hw_value_short = i;
 463                 rates[i].flags = 0;
 464                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
 465                         /*
 466                          * If CCK != 1M then set short preamble rate flag.
 467                          */
 468                         rates[i].flags |=
 469                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
 470                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
 471                 }
 472         }
 473 }
 474
 475
 476 /**
 477  * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
 478  */
 479 int iwlcore_init_geos(struct iwl_priv *priv)
 480 {
 481         struct iwl_channel_info *ch;
 482         struct ieee80211_supported_band *sband;
 483         struct ieee80211_channel *channels;
 484         struct ieee80211_channel *geo_ch;
 485         struct ieee80211_rate *rates;
 486         int i = 0;
 487
 488         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
 489             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
 490                 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
 491                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
 492                 return 0;
 493         }
 494
 495         channels = kzalloc(sizeof(struct ieee80211_channel) *
 496                            priv->channel_count, GFP_KERNEL);
 497         if (!channels)
 498                 return -ENOMEM;
 499
 500         rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
 501                         GFP_KERNEL);
 502         if (!rates) {
 503                 kfree(channels);
 504                 return -ENOMEM;
 505         }
 506
 507         /* 5.2GHz channels start after the 2.4GHz channels */
 508         sband = &priv->bands[IEEE80211_BAND_5GHZ];
 509         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
 510         /* just OFDM */
 511         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
 512         sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
 513
 514         if (priv->cfg->sku & IWL_SKU_N)
 515                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
 516                                          IEEE80211_BAND_5GHZ);
 517
 518         sband = &priv->bands[IEEE80211_BAND_2GHZ];
 519         sband->channels = channels;
 520         /* OFDM & CCK */
 521         sband->bitrates = rates;
 522         sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
 523
 524         if (priv->cfg->sku & IWL_SKU_N)
 525                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
 526                                          IEEE80211_BAND_2GHZ);
 527
 528         priv->ieee_channels = channels;
 529         priv->ieee_rates = rates;
 530
 531         for (i = 0;  i < priv->channel_count; i++) {
 532                 ch = &priv->channel_info[i];
 533
 534                 /* FIXME: might be removed if scan is OK */
 535                 if (!is_channel_valid(ch))
 536                         continue;
 537
 538                 if (is_channel_a_band(ch))
 539                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
 540                 else
 541                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
 542
 543                 geo_ch = &sband->channels[sband->n_channels++];
 544
 545                 geo_ch->center_freq =
 546                                 ieee80211_channel_to_frequency(ch->channel);
 547                 geo_ch->max_power = ch->max_power_avg;
 548                 geo_ch->max_antenna_gain = 0xff;
 549                 geo_ch->hw_value = ch->channel;
 550
 551                 if (is_channel_valid(ch)) {
 552                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
 553                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
 554
 555                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
 556                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
 557
 558                         if (ch->flags & EEPROM_CHANNEL_RADAR)
 559                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
 560
 561                         geo_ch->flags |= ch->ht40_extension_channel;
 562
 563                         if (ch->max_power_avg > priv->tx_power_device_lmt)
 564                                 priv->tx_power_device_lmt = ch->max_power_avg;
 565                 } else {
 566                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
 567                 }
 568
 569                 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
 570                                 ch->channel, geo_ch->center_freq,
 571                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
 572                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
 573                                 "restricted" : "valid",
 574                                  geo_ch->flags);
 575         }
 576
 577         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
 578              priv->cfg->sku & IWL_SKU_A) {
 579                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
 580                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
 581                            priv->pci_dev->device,
 582                            priv->pci_dev->subsystem_device);
 583                 priv->cfg->sku &= ~IWL_SKU_A;
 584         }
 585
 586         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
 587                    priv->bands[IEEE80211_BAND_2GHZ].n_channels,
 588                    priv->bands[IEEE80211_BAND_5GHZ].n_channels);
 589
 590         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
 591
 592         return 0;
 593 }
 594 EXPORT_SYMBOL(iwlcore_init_geos);
 595
 596 /*
 597  * iwlcore_free_geos - undo allocations in iwlcore_init_geos
 598  */
 599 void iwlcore_free_geos(struct iwl_priv *priv)
 600 {
 601         kfree(priv->ieee_channels);
 602         kfree(priv->ieee_rates);
 603         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
 604 }
 605 EXPORT_SYMBOL(iwlcore_free_geos);
 606
 607 static bool is_single_rx_stream(struct iwl_priv *priv)
 608 {
 609         return !priv->current_ht_config.is_ht ||
 610                ((priv->current_ht_config.mcs.rx_mask[1] == 0) &&
 611                 (priv->current_ht_config.mcs.rx_mask[2] == 0));
 612 }
 613
 614 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
 615                                    enum ieee80211_band band,
 616                                    u16 channel, u8 extension_chan_offset)
 617 {
 618         const struct iwl_channel_info *ch_info;
 619
 620         ch_info = iwl_get_channel_info(priv, band, channel);
 621         if (!is_channel_valid(ch_info))
 622                 return 0;
 623
 624         if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
 625                 return !(ch_info->ht40_extension_channel &
 626                                         IEEE80211_CHAN_NO_HT40PLUS);
 627         else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
 628                 return !(ch_info->ht40_extension_channel &
 629                                         IEEE80211_CHAN_NO_HT40MINUS);
 630
 631         return 0;
 632 }
 633
 634 u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
 635                          struct ieee80211_sta_ht_cap *sta_ht_inf)
 636 {
 637         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
 638
 639         if (!ht_conf->is_ht || !ht_conf->is_40mhz)
 640                 return 0;
 641
 642         /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
 643          * the bit will not set if it is pure 40MHz case
 644          */
 645         if (sta_ht_inf) {
 646                 if (!sta_ht_inf->ht_supported)
 647                         return 0;
 648         }
 649 #ifdef CONFIG_IWLWIFI_DEBUG
 650         if (priv->disable_ht40)
 651                 return 0;
 652 #endif
 653         return iwl_is_channel_extension(priv, priv->band,
 654                         le16_to_cpu(priv->staging_rxon.channel),
 655                         ht_conf->extension_chan_offset);
 656 }
 657 EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
 658
 659 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
 660 {
 661         u16 new_val = 0;
 662         u16 beacon_factor = 0;
 663
 664         beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
 665         new_val = beacon_val / beacon_factor;
 666
 667         if (!new_val)
 668                 new_val = max_beacon_val;
 669
 670         return new_val;
 671 }
 672
 673 void iwl_setup_rxon_timing(struct iwl_priv *priv)
 674 {
 675         u64 tsf;
 676         s32 interval_tm, rem;
 677         unsigned long flags;
 678         struct ieee80211_conf *conf = NULL;
 679         u16 beacon_int;
 680
 681         conf = ieee80211_get_hw_conf(priv->hw);
 682
 683         spin_lock_irqsave(&priv->lock, flags);
 684         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 685         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 686
 687         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 688                 beacon_int = priv->beacon_int;
 689                 priv->rxon_timing.atim_window = 0;
 690         } else {
 691                 beacon_int = priv->vif->bss_conf.beacon_int;
 692
 693                 /* TODO: we need to get atim_window from upper stack
 694                  * for now we set to 0 */
 695                 priv->rxon_timing.atim_window = 0;
 696         }
 697
 698         beacon_int = iwl_adjust_beacon_interval(beacon_int,
 699                                 priv->hw_params.max_beacon_itrvl * 1024);
 700         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 701
 702         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 703         interval_tm = beacon_int * 1024;
 704         rem = do_div(tsf, interval_tm);
 705         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 706
 707         spin_unlock_irqrestore(&priv->lock, flags);
 708         IWL_DEBUG_ASSOC(priv,
 709                         "beacon interval %d beacon timer %d beacon tim %d\n",
 710                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 711                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 712                         le16_to_cpu(priv->rxon_timing.atim_window));
 713 }
 714 EXPORT_SYMBOL(iwl_setup_rxon_timing);
 715
 716 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 717 {
 718         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 719
 720         if (hw_decrypt)
 721                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 722         else
 723                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 724
 725 }
 726 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
 727
 728 /**
 729  * iwl_check_rxon_cmd - validate RXON structure is valid
 730  *
 731  * NOTE:  This is really only useful during development and can eventually
 732  * be #ifdef'd out once the driver is stable and folks aren't actively
 733  * making changes
 734  */
 735 int iwl_check_rxon_cmd(struct iwl_priv *priv)
 736 {
 737         int error = 0;
 738         int counter = 1;
 739         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 740
 741         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 742                 error |= le32_to_cpu(rxon->flags &
 743                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 744                                  RXON_FLG_RADAR_DETECT_MSK));
 745                 if (error)
 746                         IWL_WARN(priv, "check 24G fields %d | %d\n",
 747                                     counter++, error);
 748         } else {
 749                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 750                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 751                 if (error)
 752                         IWL_WARN(priv, "check 52 fields %d | %d\n",
 753                                     counter++, error);
 754                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 755                 if (error)
 756                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
 757                                     counter++, error);
 758         }
 759         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 760         if (error)
 761                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
 762
 763         /* make sure basic rates 6Mbps and 1Mbps are supported */
 764         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 765                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 766         if (error)
 767                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
 768
 769         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 770         if (error)
 771                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
 772
 773         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 774                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 775         if (error)
 776                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
 777                             counter++, error);
 778
 779         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 780                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 781         if (error)
 782                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
 783                             counter++, error);
 784
 785         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 786                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 787         if (error)
 788                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
 789                             counter++, error);
 790
 791         if (error)
 792                 IWL_WARN(priv, "Tuning to channel %d\n",
 793                             le16_to_cpu(rxon->channel));
 794
 795         if (error) {
 796                 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
 797                 return -1;
 798         }
 799         return 0;
 800 }
 801 EXPORT_SYMBOL(iwl_check_rxon_cmd);
 802
 803 /**
 804  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 805  * @priv: staging_rxon is compared to active_rxon
 806  *
 807  * If the RXON structure is changing enough to require a new tune,
 808  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 809  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 810  */
 811 int iwl_full_rxon_required(struct iwl_priv *priv)
 812 {
 813
 814         /* These items are only settable from the full RXON command */
 815         if (!(iwl_is_associated(priv)) ||
 816             compare_ether_addr(priv->staging_rxon.bssid_addr,
 817                                priv->active_rxon.bssid_addr) ||
 818             compare_ether_addr(priv->staging_rxon.node_addr,
 819                                priv->active_rxon.node_addr) ||
 820             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 821                                priv->active_rxon.wlap_bssid_addr) ||
 822             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 823             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 824             (priv->staging_rxon.air_propagation !=
 825              priv->active_rxon.air_propagation) ||
 826             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 827              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 828             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 829              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 830             (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
 831              priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
 832             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 833                 return 1;
 834
 835         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 836          * be updated with the RXON_ASSOC command -- however only some
 837          * flag transitions are allowed using RXON_ASSOC */
 838
 839         /* Check if we are not switching bands */
 840         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 841             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 842                 return 1;
 843
 844         /* Check if we are switching association toggle */
 845         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 846                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 847                 return 1;
 848
 849         return 0;
 850 }
 851 EXPORT_SYMBOL(iwl_full_rxon_required);
 852
 853 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 854 {
 855         int i;
 856         int rate_mask;
 857
 858         /* Set rate mask*/
 859         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 860                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 861         else
 862                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 863
 864         /* Find lowest valid rate */
 865         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 866                                         i = iwl_rates[i].next_ieee) {
 867                 if (rate_mask & (1 << i))
 868                         return iwl_rates[i].plcp;
 869         }
 870
 871         /* No valid rate was found. Assign the lowest one */
 872         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 873                 return IWL_RATE_1M_PLCP;
 874         else
 875                 return IWL_RATE_6M_PLCP;
 876 }
 877 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
 878
 879 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
 880 {
 881         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 882
 883         if (!ht_conf->is_ht) {
 884                 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
 885                         RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
 886                         RXON_FLG_HT40_PROT_MSK |
 887                         RXON_FLG_HT_PROT_MSK);
 888                 return;
 889         }
 890
 891         /* FIXME: if the definition of ht_protection changed, the "translation"
 892          * will be needed for rxon->flags
 893          */
 894         rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
 895
 896         /* Set up channel bandwidth:
 897          * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
 898         /* clear the HT channel mode before set the mode */
 899         rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
 900                          RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
 901         if (iwl_is_ht40_tx_allowed(priv, NULL)) {
 902                 /* pure ht40 */
 903                 if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
 904                         rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
 905                         /* Note: control channel is opposite of extension channel */
 906                         switch (ht_conf->extension_chan_offset) {
 907                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 908                                 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 909                                 break;
 910                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 911                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 912                                 break;
 913                         }
 914                 } else {
 915                         /* Note: control channel is opposite of extension channel */
 916                         switch (ht_conf->extension_chan_offset) {
 917                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 918                                 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
 919                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
 920                                 break;
 921                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 922                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 923                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
 924                                 break;
 925                         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
 926                         default:
 927                                 /* channel location only valid if in Mixed mode */
 928                                 IWL_ERR(priv, "invalid extension channel offset\n");
 929                                 break;
 930                         }
 931                 }
 932         } else {
 933                 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
 934         }
 935
 936         if (priv->cfg->ops->hcmd->set_rxon_chain)
 937                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
 938
 939         IWL_DEBUG_ASSOC(priv, "supported HT rate 0x%X 0x%X 0x%X "
 940                         "rxon flags 0x%X operation mode :0x%X "
 941                         "extension channel offset 0x%x\n",
 942                         ht_conf->mcs.rx_mask[0],
 943                         ht_conf->mcs.rx_mask[1],
 944                         ht_conf->mcs.rx_mask[2],
 945                         le32_to_cpu(rxon->flags), ht_conf->ht_protection,
 946                         ht_conf->extension_chan_offset);
 947         return;
 948 }
 949 EXPORT_SYMBOL(iwl_set_rxon_ht);
 950
 951 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 952 #define IWL_NUM_RX_CHAINS_SINGLE        2
 953 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 954 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 955
 956 /* Determine how many receiver/antenna chains to use.
 957  * More provides better reception via diversity.  Fewer saves power.
 958  * MIMO (dual stream) requires at least 2, but works better with 3.
 959  * This does not determine *which* chains to use, just how many.
 960  */
 961 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 962 {
 963         bool is_single = is_single_rx_stream(priv);
 964         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 965
 966         /* # of Rx chains to use when expecting MIMO. */
 967         if (is_single || (!is_cam && (priv->current_ht_config.sm_ps ==
 968                                                  WLAN_HT_CAP_SM_PS_STATIC)))
 969                 return IWL_NUM_RX_CHAINS_SINGLE;
 970         else
 971                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 972 }
 973
 974 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 975 {
 976         int idle_cnt;
 977         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 978         /* # Rx chains when idling and maybe trying to save power */
 979         switch (priv->current_ht_config.sm_ps) {
 980         case WLAN_HT_CAP_SM_PS_STATIC:
 981         case WLAN_HT_CAP_SM_PS_DYNAMIC:
 982                 idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
 983                                         IWL_NUM_IDLE_CHAINS_SINGLE;
 984                 break;
 985         case WLAN_HT_CAP_SM_PS_DISABLED:
 986                 idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
 987                 break;
 988         case WLAN_HT_CAP_SM_PS_INVALID:
 989         default:
 990                 IWL_ERR(priv, "invalid mimo ps mode %d\n",
 991                            priv->current_ht_config.sm_ps);
 992                 WARN_ON(1);
 993                 idle_cnt = -1;
 994                 break;
 995         }
 996         return idle_cnt;
 997 }
 998
 999 /* up to 4 chains */
1000 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
1001 {
1002         u8 res;
1003         res = (chain_bitmap & BIT(0)) >> 0;
1004         res += (chain_bitmap & BIT(1)) >> 1;
1005         res += (chain_bitmap & BIT(2)) >> 2;
1006         res += (chain_bitmap & BIT(4)) >> 4;
1007         return res;
1008 }
1009
1010 /**
1011  * iwl_is_monitor_mode - Determine if interface in monitor mode
1012  *
1013  * priv->iw_mode is set in add_interface, but add_interface is
1014  * never called for monitor mode. The only way mac80211 informs us about
1015  * monitor mode is through configuring filters (call to configure_filter).
1016  */
1017 bool iwl_is_monitor_mode(struct iwl_priv *priv)
1018 {
1019         return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1020 }
1021 EXPORT_SYMBOL(iwl_is_monitor_mode);
1022
1023 /**
1024  * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1025  *
1026  * Selects how many and which Rx receivers/antennas/chains to use.
1027  * This should not be used for scan command ... it puts data in wrong place.
1028  */
1029 void iwl_set_rxon_chain(struct iwl_priv *priv)
1030 {
1031         bool is_single = is_single_rx_stream(priv);
1032         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1033         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1034         u32 active_chains;
1035         u16 rx_chain;
1036
1037         /* Tell uCode which antennas are actually connected.
1038          * Before first association, we assume all antennas are connected.
1039          * Just after first association, iwl_chain_noise_calibration()
1040          *    checks which antennas actually *are* connected. */
1041          if (priv->chain_noise_data.active_chains)
1042                 active_chains = priv->chain_noise_data.active_chains;
1043         else
1044                 active_chains = priv->hw_params.valid_rx_ant;
1045
1046         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1047
1048         /* How many receivers should we use? */
1049         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1050         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1051
1052
1053         /* correct rx chain count according hw settings
1054          * and chain noise calibration
1055          */
1056         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1057         if (valid_rx_cnt < active_rx_cnt)
1058                 active_rx_cnt = valid_rx_cnt;
1059
1060         if (valid_rx_cnt < idle_rx_cnt)
1061                 idle_rx_cnt = valid_rx_cnt;
1062
1063         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1064         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
1065
1066         /* copied from 'iwl_bg_request_scan()' */
1067         /* Force use of chains B and C (0x6) for Rx for 4965
1068          * Avoid A (0x1) because of its off-channel reception on A-band.
1069          * MIMO is not used here, but value is required */
1070         if (iwl_is_monitor_mode(priv) &&
1071             !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1072             ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1073                 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1074                 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1075                 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1076                 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1077         }
1078
1079         priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1080
1081         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1082                 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1083         else
1084                 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1085
1086         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1087                         priv->staging_rxon.rx_chain,
1088                         active_rx_cnt, idle_rx_cnt);
1089
1090         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1091                 active_rx_cnt < idle_rx_cnt);
1092 }
1093 EXPORT_SYMBOL(iwl_set_rxon_chain);
1094
1095 /**
1096  * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1097  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1098  * @channel: Any channel valid for the requested phymode
1099
1100  * In addition to setting the staging RXON, priv->phymode is also set.
1101  *
1102  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
1103  * in the staging RXON flag structure based on the phymode
1104  */
1105 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1106 {
1107         enum ieee80211_band band = ch->band;
1108         u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1109
1110         if (!iwl_get_channel_info(priv, band, channel)) {
1111                 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1112                                channel, band);
1113                 return -EINVAL;
1114         }
1115
1116         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1117             (priv->band == band))
1118                 return 0;
1119
1120         priv->staging_rxon.channel = cpu_to_le16(channel);
1121         if (band == IEEE80211_BAND_5GHZ)
1122                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1123         else
1124                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1125
1126         priv->band = band;
1127
1128         IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1129
1130         return 0;
1131 }
1132 EXPORT_SYMBOL(iwl_set_rxon_channel);
1133
1134 void iwl_set_flags_for_band(struct iwl_priv *priv,
1135                             enum ieee80211_band band)
1136 {
1137         if (band == IEEE80211_BAND_5GHZ) {
1138                 priv->staging_rxon.flags &=
1139                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1140                       | RXON_FLG_CCK_MSK);
1141                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1142         } else {
1143                 /* Copied from iwl_post_associate() */
1144                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1145                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1146                 else
1147                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1148
1149                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1150                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1151
1152                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1153                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1154                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1155         }
1156 }
1157
1158 /*
1159  * initialize rxon structure with default values from eeprom
1160  */
1161 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1162 {
1163         const struct iwl_channel_info *ch_info;
1164
1165         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1166
1167         switch (mode) {
1168         case NL80211_IFTYPE_AP:
1169                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1170                 break;
1171
1172         case NL80211_IFTYPE_STATION:
1173                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1174                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1175                 break;
1176
1177         case NL80211_IFTYPE_ADHOC:
1178                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1179                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1180                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1181                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1182                 break;
1183
1184         default:
1185                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1186                 break;
1187         }
1188
1189 #if 0
1190         /* TODO:  Figure out when short_preamble would be set and cache from
1191          * that */
1192         if (!hw_to_local(priv->hw)->short_preamble)
1193                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1194         else
1195                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1196 #endif
1197
1198         ch_info = iwl_get_channel_info(priv, priv->band,
1199                                        le16_to_cpu(priv->active_rxon.channel));
1200
1201         if (!ch_info)
1202                 ch_info = &priv->channel_info[0];
1203
1204         /*
1205          * in some case A channels are all non IBSS
1206          * in this case force B/G channel
1207          */
1208         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1209             !(is_channel_ibss(ch_info)))
1210                 ch_info = &priv->channel_info[0];
1211
1212         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1213         priv->band = ch_info->band;
1214
1215         iwl_set_flags_for_band(priv, priv->band);
1216
1217         priv->staging_rxon.ofdm_basic_rates =
1218             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1219         priv->staging_rxon.cck_basic_rates =
1220             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1221
1222         /* clear both MIX and PURE40 mode flag */
1223         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1224                                         RXON_FLG_CHANNEL_MODE_PURE_40);
1225         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1226         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1227         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1228         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1229         priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1230 }
1231 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1232
1233 static void iwl_set_rate(struct iwl_priv *priv)
1234 {
1235         const struct ieee80211_supported_band *hw = NULL;
1236         struct ieee80211_rate *rate;
1237         int i;
1238
1239         hw = iwl_get_hw_mode(priv, priv->band);
1240         if (!hw) {
1241                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1242                 return;
1243         }
1244
1245         priv->active_rate = 0;
1246         priv->active_rate_basic = 0;
1247
1248         for (i = 0; i < hw->n_bitrates; i++) {
1249                 rate = &(hw->bitrates[i]);
1250                 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
1251                         priv->active_rate |= (1 << rate->hw_value);
1252         }
1253
1254         IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1255                        priv->active_rate, priv->active_rate_basic);
1256
1257         /*
1258          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1259          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1260          * OFDM
1261          */
1262         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1263                 priv->staging_rxon.cck_basic_rates =
1264                     ((priv->active_rate_basic &
1265                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1266         else
1267                 priv->staging_rxon.cck_basic_rates =
1268                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1269
1270         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1271                 priv->staging_rxon.ofdm_basic_rates =
1272                     ((priv->active_rate_basic &
1273                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1274                       IWL_FIRST_OFDM_RATE) & 0xFF;
1275         else
1276                 priv->staging_rxon.ofdm_basic_rates =
1277                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1278 }
1279
1280 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1281 {
1282         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1283         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1284         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1285         IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1286                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1287         rxon->channel = csa->channel;
1288         priv->staging_rxon.channel = csa->channel;
1289 }
1290 EXPORT_SYMBOL(iwl_rx_csa);
1291
1292 #ifdef CONFIG_IWLWIFI_DEBUG
1293 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1294 {
1295         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1296
1297         IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1298         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1299         IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1300         IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1301         IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1302                         le32_to_cpu(rxon->filter_flags));
1303         IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1304         IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1305                         rxon->ofdm_basic_rates);
1306         IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1307         IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1308         IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1309         IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1310 }
1311 #endif
1312 /**
1313  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1314  */
1315 void iwl_irq_handle_error(struct iwl_priv *priv)
1316 {
1317         /* Set the FW error flag -- cleared on iwl_down */
1318         set_bit(STATUS_FW_ERROR, &priv->status);
1319
1320         /* Cancel currently queued command. */
1321         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1322
1323 #ifdef CONFIG_IWLWIFI_DEBUG
1324         if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) {
1325                 priv->cfg->ops->lib->dump_nic_error_log(priv);
1326                 priv->cfg->ops->lib->dump_nic_event_log(priv);
1327                 iwl_print_rx_config_cmd(priv);
1328         }
1329 #endif
1330
1331         wake_up_interruptible(&priv->wait_command_queue);
1332
1333         /* Keep the restart process from trying to send host
1334          * commands by clearing the INIT status bit */
1335         clear_bit(STATUS_READY, &priv->status);
1336
1337         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1338                 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1339                           "Restarting adapter due to uCode error.\n");
1340
1341                 if (priv->cfg->mod_params->restart_fw)
1342                         queue_work(priv->workqueue, &priv->restart);
1343         }
1344 }
1345 EXPORT_SYMBOL(iwl_irq_handle_error);
1346
1347 void iwl_configure_filter(struct ieee80211_hw *hw,
1348                           unsigned int changed_flags,
1349                           unsigned int *total_flags,
1350                           u64 multicast)
1351 {
1352         struct iwl_priv *priv = hw->priv;
1353         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1354
1355         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1356                         changed_flags, *total_flags);
1357
1358         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1359                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1360                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
1361                 else
1362                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1363         }
1364         if (changed_flags & FIF_ALLMULTI) {
1365                 if (*total_flags & FIF_ALLMULTI)
1366                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1367                 else
1368                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1369         }
1370         if (changed_flags & FIF_CONTROL) {
1371                 if (*total_flags & FIF_CONTROL)
1372                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1373                 else
1374                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1375         }
1376         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1377                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1378                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1379                 else
1380                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1381         }
1382
1383         /* We avoid iwl_commit_rxon here to commit the new filter flags
1384          * since mac80211 will call ieee80211_hw_config immediately.
1385          * (mc_list is not supported at this time). Otherwise, we need to
1386          * queue a background iwl_commit_rxon work.
1387          */
1388
1389         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1390                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1391 }
1392 EXPORT_SYMBOL(iwl_configure_filter);
1393
1394 int iwl_setup_mac(struct iwl_priv *priv)
1395 {
1396         int ret;
1397         struct ieee80211_hw *hw = priv->hw;
1398         hw->rate_control_algorithm = "iwl-agn-rs";
1399
1400         /* Tell mac80211 our characteristics */
1401         hw->flags = IEEE80211_HW_SIGNAL_DBM |
1402                     IEEE80211_HW_NOISE_DBM |
1403                     IEEE80211_HW_AMPDU_AGGREGATION |
1404                     IEEE80211_HW_SPECTRUM_MGMT;
1405
1406         if (!priv->cfg->broken_powersave)
1407                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
1408                              IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
1409
1410         hw->wiphy->interface_modes =
1411                 BIT(NL80211_IFTYPE_STATION) |
1412                 BIT(NL80211_IFTYPE_ADHOC);
1413
1414         hw->wiphy->custom_regulatory = true;
1415
1416         /* Firmware does not support this */
1417         hw->wiphy->disable_beacon_hints = true;
1418
1419         /*
1420          * For now, disable PS by default because it affects
1421          * RX performance significantly.
1422          */
1423         hw->wiphy->ps_default = false;
1424
1425         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1426         /* we create the 802.11 header and a zero-length SSID element */
1427         hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
1428
1429         /* Default value; 4 EDCA QOS priorities */
1430         hw->queues = 4;
1431
1432         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1433
1434         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1435                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1436                         &priv->bands[IEEE80211_BAND_2GHZ];
1437         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1438                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1439                         &priv->bands[IEEE80211_BAND_5GHZ];
1440
1441         ret = ieee80211_register_hw(priv->hw);
1442         if (ret) {
1443                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1444                 return ret;
1445         }
1446         priv->mac80211_registered = 1;
1447
1448         return 0;
1449 }
1450 EXPORT_SYMBOL(iwl_setup_mac);
1451
1452 int iwl_set_hw_params(struct iwl_priv *priv)
1453 {
1454         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1455         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1456         if (priv->cfg->mod_params->amsdu_size_8K)
1457                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1458         else
1459                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1460         priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1461
1462         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1463
1464         if (priv->cfg->mod_params->disable_11n)
1465                 priv->cfg->sku &= ~IWL_SKU_N;
1466
1467         /* Device-specific setup */
1468         return priv->cfg->ops->lib->set_hw_params(priv);
1469 }
1470 EXPORT_SYMBOL(iwl_set_hw_params);
1471
1472 int iwl_init_drv(struct iwl_priv *priv)
1473 {
1474         int ret;
1475
1476         priv->ibss_beacon = NULL;
1477
1478         spin_lock_init(&priv->lock);
1479         spin_lock_init(&priv->sta_lock);
1480         spin_lock_init(&priv->hcmd_lock);
1481
1482         INIT_LIST_HEAD(&priv->free_frames);
1483
1484         mutex_init(&priv->mutex);
1485
1486         /* Clear the driver's (not device's) station table */
1487         iwl_clear_stations_table(priv);
1488
1489         priv->data_retry_limit = -1;
1490         priv->ieee_channels = NULL;
1491         priv->ieee_rates = NULL;
1492         priv->band = IEEE80211_BAND_2GHZ;
1493
1494         priv->iw_mode = NL80211_IFTYPE_STATION;
1495
1496         priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
1497
1498         /* Choose which receivers/antennas to use */
1499         if (priv->cfg->ops->hcmd->set_rxon_chain)
1500                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1501
1502         iwl_init_scan_params(priv);
1503
1504         iwl_reset_qos(priv);
1505
1506         priv->qos_data.qos_active = 0;
1507         priv->qos_data.qos_cap.val = 0;
1508
1509         priv->rates_mask = IWL_RATES_MASK;
1510         /* Set the tx_power_user_lmt to the lowest power level
1511          * this value will get overwritten by channel max power avg
1512          * from eeprom */
1513         priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MIN;
1514
1515         ret = iwl_init_channel_map(priv);
1516         if (ret) {
1517                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1518                 goto err;
1519         }
1520
1521         ret = iwlcore_init_geos(priv);
1522         if (ret) {
1523                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1524                 goto err_free_channel_map;
1525         }
1526         iwlcore_init_hw_rates(priv, priv->ieee_rates);
1527
1528         return 0;
1529
1530 err_free_channel_map:
1531         iwl_free_channel_map(priv);
1532 err:
1533         return ret;
1534 }
1535 EXPORT_SYMBOL(iwl_init_drv);
1536
1537 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1538 {
1539         int ret = 0;
1540         s8 prev_tx_power = priv->tx_power_user_lmt;
1541
1542         if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1543                 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1544                          tx_power,
1545                          IWL_TX_POWER_TARGET_POWER_MIN);
1546                 return -EINVAL;
1547         }
1548
1549         if (tx_power > priv->tx_power_device_lmt) {
1550                 IWL_WARN(priv,
1551                         "Requested user TXPOWER %d above upper limit %d.\n",
1552                          tx_power, priv->tx_power_device_lmt);
1553                 return -EINVAL;
1554         }
1555
1556         if (priv->tx_power_user_lmt != tx_power)
1557                 force = true;
1558
1559         /* if nic is not up don't send command */
1560         if (iwl_is_ready_rf(priv)) {
1561                 priv->tx_power_user_lmt = tx_power;
1562                 if (force && priv->cfg->ops->lib->send_tx_power)
1563                         ret = priv->cfg->ops->lib->send_tx_power(priv);
1564                 else if (!priv->cfg->ops->lib->send_tx_power)
1565                         ret = -EOPNOTSUPP;
1566                 /*
1567                  * if fail to set tx_power, restore the orig. tx power
1568                  */
1569                 if (ret)
1570                         priv->tx_power_user_lmt = prev_tx_power;
1571         }
1572
1573         /*
1574          * Even this is an async host command, the command
1575          * will always report success from uCode
1576          * So once driver can placing the command into the queue
1577          * successfully, driver can use priv->tx_power_user_lmt
1578          * to reflect the current tx power
1579          */
1580         return ret;
1581 }
1582 EXPORT_SYMBOL(iwl_set_tx_power);
1583
1584 void iwl_uninit_drv(struct iwl_priv *priv)
1585 {
1586         iwl_calib_free_results(priv);
1587         iwlcore_free_geos(priv);
1588         iwl_free_channel_map(priv);
1589         kfree(priv->scan);
1590 }
1591 EXPORT_SYMBOL(iwl_uninit_drv);
1592
1593 #define ICT_COUNT (PAGE_SIZE/sizeof(u32))
1594
1595 /* Free dram table */
1596 void iwl_free_isr_ict(struct iwl_priv *priv)
1597 {
1598         if (priv->ict_tbl_vir) {
1599                 pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
1600                                         PAGE_SIZE, priv->ict_tbl_vir,
1601                                         priv->ict_tbl_dma);
1602                 priv->ict_tbl_vir = NULL;
1603         }
1604 }
1605 EXPORT_SYMBOL(iwl_free_isr_ict);
1606
1607
1608 /* allocate dram shared table it is a PAGE_SIZE aligned
1609  * also reset all data related to ICT table interrupt.
1610  */
1611 int iwl_alloc_isr_ict(struct iwl_priv *priv)
1612 {
1613
1614         if (priv->cfg->use_isr_legacy)
1615                 return 0;
1616         /* allocate shrared data table */
1617         priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
1618                                                   ICT_COUNT) + PAGE_SIZE,
1619                                                   &priv->ict_tbl_dma);
1620         if (!priv->ict_tbl_vir)
1621                 return -ENOMEM;
1622
1623         /* align table to PAGE_SIZE boundry */
1624         priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
1625
1626         IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
1627                              (unsigned long long)priv->ict_tbl_dma,
1628                              (unsigned long long)priv->aligned_ict_tbl_dma,
1629                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1630
1631         priv->ict_tbl =  priv->ict_tbl_vir +
1632                           (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
1633
1634         IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
1635                              priv->ict_tbl, priv->ict_tbl_vir,
1636                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1637
1638         /* reset table and index to all 0 */
1639         memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
1640         priv->ict_index = 0;
1641
1642         /* add periodic RX interrupt */
1643         priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
1644         return 0;
1645 }
1646 EXPORT_SYMBOL(iwl_alloc_isr_ict);
1647
1648 /* Device is going up inform it about using ICT interrupt table,
1649  * also we need to tell the driver to start using ICT interrupt.
1650  */
1651 int iwl_reset_ict(struct iwl_priv *priv)
1652 {
1653         u32 val;
1654         unsigned long flags;
1655
1656         if (!priv->ict_tbl_vir)
1657                 return 0;
1658
1659         spin_lock_irqsave(&priv->lock, flags);
1660         iwl_disable_interrupts(priv);
1661
1662         memset(&priv->ict_tbl[0], 0, sizeof(u32) * ICT_COUNT);
1663
1664         val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
1665
1666         val |= CSR_DRAM_INT_TBL_ENABLE;
1667         val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
1668
1669         IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
1670                         "aligned dma address %Lx\n",
1671                         val, (unsigned long long)priv->aligned_ict_tbl_dma);
1672
1673         iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
1674         priv->use_ict = true;
1675         priv->ict_index = 0;
1676         iwl_write32(priv, CSR_INT, priv->inta_mask);
1677         iwl_enable_interrupts(priv);
1678         spin_unlock_irqrestore(&priv->lock, flags);
1679
1680         return 0;
1681 }
1682 EXPORT_SYMBOL(iwl_reset_ict);
1683
1684 /* Device is going down disable ict interrupt usage */
1685 void iwl_disable_ict(struct iwl_priv *priv)
1686 {
1687         unsigned long flags;
1688
1689         spin_lock_irqsave(&priv->lock, flags);
1690         priv->use_ict = false;
1691         spin_unlock_irqrestore(&priv->lock, flags);
1692 }
1693 EXPORT_SYMBOL(iwl_disable_ict);
1694
1695 /* interrupt handler using ict table, with this interrupt driver will
1696  * stop using INTA register to get device's interrupt, reading this register
1697  * is expensive, device will write interrupts in ICT dram table, increment
1698  * index then will fire interrupt to driver, driver will OR all ICT table
1699  * entries from current index up to table entry with 0 value. the result is
1700  * the interrupt we need to service, driver will set the entries back to 0 and
1701  * set index.
1702  */
1703 irqreturn_t iwl_isr_ict(int irq, void *data)
1704 {
1705         struct iwl_priv *priv = data;
1706         u32 inta, inta_mask;
1707         u32 val = 0;
1708
1709         if (!priv)
1710                 return IRQ_NONE;
1711
1712         /* dram interrupt table not set yet,
1713          * use legacy interrupt.
1714          */
1715         if (!priv->use_ict)
1716                 return iwl_isr(irq, data);
1717
1718         spin_lock(&priv->lock);
1719
1720         /* Disable (but don't clear!) interrupts here to avoid
1721          * back-to-back ISRs and sporadic interrupts from our NIC.
1722          * If we have something to service, the tasklet will re-enable ints.
1723          * If we *don't* have something, we'll re-enable before leaving here.
1724          */
1725         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1726         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1727
1728
1729         /* Ignore interrupt if there's nothing in NIC to service.
1730          * This may be due to IRQ shared with another device,
1731          * or due to sporadic interrupts thrown from our NIC. */
1732         if (!priv->ict_tbl[priv->ict_index]) {
1733                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1734                 goto none;
1735         }
1736
1737         /* read all entries that not 0 start with ict_index */
1738         while (priv->ict_tbl[priv->ict_index]) {
1739
1740                 val |= le32_to_cpu(priv->ict_tbl[priv->ict_index]);
1741                 IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1742                                 priv->ict_index,
1743                                 le32_to_cpu(priv->ict_tbl[priv->ict_index]));
1744                 priv->ict_tbl[priv->ict_index] = 0;
1745                 priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1746                                                      ICT_COUNT);
1747
1748         }
1749
1750         /* We should not get this value, just ignore it. */
1751         if (val == 0xffffffff)
1752                 val = 0;
1753
1754         inta = (0xff & val) | ((0xff00 & val) << 16);
1755         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
1756                         inta, inta_mask, val);
1757
1758         inta &= priv->inta_mask;
1759         priv->inta |= inta;
1760
1761         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1762         if (likely(inta))
1763                 tasklet_schedule(&priv->irq_tasklet);
1764         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
1765                 /* Allow interrupt if was disabled by this handler and
1766                  * no tasklet was schedules, We should not enable interrupt,
1767                  * tasklet will enable it.
1768                  */
1769                 iwl_enable_interrupts(priv);
1770         }
1771
1772         spin_unlock(&priv->lock);
1773         return IRQ_HANDLED;
1774
1775  none:
1776         /* re-enable interrupts here since we don't have anything to service.
1777          * only Re-enable if disabled by irq.
1778          */
1779         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1780                 iwl_enable_interrupts(priv);
1781
1782         spin_unlock(&priv->lock);
1783         return IRQ_NONE;
1784 }
1785 EXPORT_SYMBOL(iwl_isr_ict);
1786
1787
1788 static irqreturn_t iwl_isr(int irq, void *data)
1789 {
1790         struct iwl_priv *priv = data;
1791         u32 inta, inta_mask;
1792 #ifdef CONFIG_IWLWIFI_DEBUG
1793         u32 inta_fh;
1794 #endif
1795         if (!priv)
1796                 return IRQ_NONE;
1797
1798         spin_lock(&priv->lock);
1799
1800         /* Disable (but don't clear!) interrupts here to avoid
1801          *    back-to-back ISRs and sporadic interrupts from our NIC.
1802          * If we have something to service, the tasklet will re-enable ints.
1803          * If we *don't* have something, we'll re-enable before leaving here. */
1804         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1805         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1806
1807         /* Discover which interrupts are active/pending */
1808         inta = iwl_read32(priv, CSR_INT);
1809
1810         /* Ignore interrupt if there's nothing in NIC to service.
1811          * This may be due to IRQ shared with another device,
1812          * or due to sporadic interrupts thrown from our NIC. */
1813         if (!inta) {
1814                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1815                 goto none;
1816         }
1817
1818         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1819                 /* Hardware disappeared. It might have already raised
1820                  * an interrupt */
1821                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1822                 goto unplugged;
1823         }
1824
1825 #ifdef CONFIG_IWLWIFI_DEBUG
1826         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1827                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1828                 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
1829                               "fh 0x%08x\n", inta, inta_mask, inta_fh);
1830         }
1831 #endif
1832
1833         priv->inta |= inta;
1834         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1835         if (likely(inta))
1836                 tasklet_schedule(&priv->irq_tasklet);
1837         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1838                 iwl_enable_interrupts(priv);
1839
1840  unplugged:
1841         spin_unlock(&priv->lock);
1842         return IRQ_HANDLED;
1843
1844  none:
1845         /* re-enable interrupts here since we don't have anything to service. */
1846         /* only Re-enable if diabled by irq  and no schedules tasklet. */
1847         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1848                 iwl_enable_interrupts(priv);
1849
1850         spin_unlock(&priv->lock);
1851         return IRQ_NONE;
1852 }
1853
1854 irqreturn_t iwl_isr_legacy(int irq, void *data)
1855 {
1856         struct iwl_priv *priv = data;
1857         u32 inta, inta_mask;
1858         u32 inta_fh;
1859         if (!priv)
1860                 return IRQ_NONE;
1861
1862         spin_lock(&priv->lock);
1863
1864         /* Disable (but don't clear!) interrupts here to avoid
1865          *    back-to-back ISRs and sporadic interrupts from our NIC.
1866          * If we have something to service, the tasklet will re-enable ints.
1867          * If we *don't* have something, we'll re-enable before leaving here. */
1868         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1869         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1870
1871         /* Discover which interrupts are active/pending */
1872         inta = iwl_read32(priv, CSR_INT);
1873         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1874
1875         /* Ignore interrupt if there's nothing in NIC to service.
1876          * This may be due to IRQ shared with another device,
1877          * or due to sporadic interrupts thrown from our NIC. */
1878         if (!inta && !inta_fh) {
1879                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1880                 goto none;
1881         }
1882
1883         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1884                 /* Hardware disappeared. It might have already raised
1885                  * an interrupt */
1886                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1887                 goto unplugged;
1888         }
1889
1890         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1891                       inta, inta_mask, inta_fh);
1892
1893         inta &= ~CSR_INT_BIT_SCD;
1894
1895         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1896         if (likely(inta || inta_fh))
1897                 tasklet_schedule(&priv->irq_tasklet);
1898
1899  unplugged:
1900         spin_unlock(&priv->lock);
1901         return IRQ_HANDLED;
1902
1903  none:
1904         /* re-enable interrupts here since we don't have anything to service. */
1905         /* only Re-enable if diabled by irq */
1906         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1907                 iwl_enable_interrupts(priv);
1908         spin_unlock(&priv->lock);
1909         return IRQ_NONE;
1910 }
1911 EXPORT_SYMBOL(iwl_isr_legacy);
1912
1913 int iwl_send_bt_config(struct iwl_priv *priv)
1914 {
1915         struct iwl_bt_cmd bt_cmd = {
1916                 .flags = 3,
1917                 .lead_time = 0xAA,
1918                 .max_kill = 1,
1919                 .kill_ack_mask = 0,
1920                 .kill_cts_mask = 0,
1921         };
1922
1923         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1924                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
1925 }
1926 EXPORT_SYMBOL(iwl_send_bt_config);
1927
1928 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
1929 {
1930         u32 stat_flags = 0;
1931         struct iwl_host_cmd cmd = {
1932                 .id = REPLY_STATISTICS_CMD,
1933                 .flags = flags,
1934                 .len = sizeof(stat_flags),
1935                 .data = (u8 *) &stat_flags,
1936         };
1937         return iwl_send_cmd(priv, &cmd);
1938 }
1939 EXPORT_SYMBOL(iwl_send_statistics_request);
1940
1941 /**
1942  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
1943  *   using sample data 100 bytes apart.  If these sample points are good,
1944  *   it's a pretty good bet that everything between them is good, too.
1945  */
1946 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1947 {
1948         u32 val;
1949         int ret = 0;
1950         u32 errcnt = 0;
1951         u32 i;
1952
1953         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1954
1955         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1956                 /* read data comes through single port, auto-incr addr */
1957                 /* NOTE: Use the debugless read so we don't flood kernel log
1958                  * if IWL_DL_IO is set */
1959                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1960                         i + IWL49_RTC_INST_LOWER_BOUND);
1961                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1962                 if (val != le32_to_cpu(*image)) {
1963                         ret = -EIO;
1964                         errcnt++;
1965                         if (errcnt >= 3)
1966                                 break;
1967                 }
1968         }
1969
1970         return ret;
1971 }
1972
1973 /**
1974  * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1975  *     looking at all data.
1976  */
1977 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1978                                  u32 len)
1979 {
1980         u32 val;
1981         u32 save_len = len;
1982         int ret = 0;
1983         u32 errcnt;
1984
1985         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1986
1987         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1988                            IWL49_RTC_INST_LOWER_BOUND);
1989
1990         errcnt = 0;
1991         for (; len > 0; len -= sizeof(u32), image++) {
1992                 /* read data comes through single port, auto-incr addr */
1993                 /* NOTE: Use the debugless read so we don't flood kernel log
1994                  * if IWL_DL_IO is set */
1995                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1996                 if (val != le32_to_cpu(*image)) {
1997                         IWL_ERR(priv, "uCode INST section is invalid at "
1998                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
1999                                   save_len - len, val, le32_to_cpu(*image));
2000                         ret = -EIO;
2001                         errcnt++;
2002                         if (errcnt >= 20)
2003                                 break;
2004                 }
2005         }
2006
2007         if (!errcnt)
2008                 IWL_DEBUG_INFO(priv,
2009                     "ucode image in INSTRUCTION memory is good\n");
2010
2011         return ret;
2012 }
2013
2014 /**
2015  * iwl_verify_ucode - determine which instruction image is in SRAM,
2016  *    and verify its contents
2017  */
2018 int iwl_verify_ucode(struct iwl_priv *priv)
2019 {
2020         __le32 *image;
2021         u32 len;
2022         int ret;
2023
2024         /* Try bootstrap */
2025         image = (__le32 *)priv->ucode_boot.v_addr;
2026         len = priv->ucode_boot.len;
2027         ret = iwlcore_verify_inst_sparse(priv, image, len);
2028         if (!ret) {
2029                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2030                 return 0;
2031         }
2032
2033         /* Try initialize */
2034         image = (__le32 *)priv->ucode_init.v_addr;
2035         len = priv->ucode_init.len;
2036         ret = iwlcore_verify_inst_sparse(priv, image, len);
2037         if (!ret) {
2038                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2039                 return 0;
2040         }
2041
2042         /* Try runtime/protocol */
2043         image = (__le32 *)priv->ucode_code.v_addr;
2044         len = priv->ucode_code.len;
2045         ret = iwlcore_verify_inst_sparse(priv, image, len);
2046         if (!ret) {
2047                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2048                 return 0;
2049         }
2050
2051         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2052
2053         /* Since nothing seems to match, show first several data entries in
2054          * instruction SRAM, so maybe visual inspection will give a clue.
2055          * Selection of bootstrap image (vs. other images) is arbitrary. */
2056         image = (__le32 *)priv->ucode_boot.v_addr;
2057         len = priv->ucode_boot.len;
2058         ret = iwl_verify_inst_full(priv, image, len);
2059
2060         return ret;
2061 }
2062 EXPORT_SYMBOL(iwl_verify_ucode);
2063
2064
2065 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2066 {
2067         struct iwl_ct_kill_config cmd;
2068         struct iwl_ct_kill_throttling_config adv_cmd;
2069         unsigned long flags;
2070         int ret = 0;
2071
2072         spin_lock_irqsave(&priv->lock, flags);
2073         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2074                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2075         spin_unlock_irqrestore(&priv->lock, flags);
2076         priv->thermal_throttle.ct_kill_toggle = false;
2077
2078         switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
2079         case CSR_HW_REV_TYPE_1000:
2080         case CSR_HW_REV_TYPE_6x00:
2081         case CSR_HW_REV_TYPE_6x50:
2082                 adv_cmd.critical_temperature_enter =
2083                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2084                 adv_cmd.critical_temperature_exit =
2085                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2086
2087                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2088                                        sizeof(adv_cmd), &adv_cmd);
2089                 if (ret)
2090                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2091                 else
2092                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2093                                         "succeeded, "
2094                                         "critical temperature enter is %d,"
2095                                         "exit is %d\n",
2096                                        priv->hw_params.ct_kill_threshold,
2097                                        priv->hw_params.ct_kill_exit_threshold);
2098                 break;
2099         default:
2100                 cmd.critical_temperature_R =
2101                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2102
2103                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2104                                        sizeof(cmd), &cmd);
2105                 if (ret)
2106                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2107                 else
2108                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2109                                         "succeeded, "
2110                                         "critical temperature is %d\n",
2111                                         priv->hw_params.ct_kill_threshold);
2112                 break;
2113         }
2114 }
2115 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2116
2117
2118 /*
2119  * CARD_STATE_CMD
2120  *
2121  * Use: Sets the device's internal card state to enable, disable, or halt
2122  *
2123  * When in the 'enable' state the card operates as normal.
2124  * When in the 'disable' state, the card enters into a low power mode.
2125  * When in the 'halt' state, the card is shut down and must be fully
2126  * restarted to come back on.
2127  */
2128 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2129 {
2130         struct iwl_host_cmd cmd = {
2131                 .id = REPLY_CARD_STATE_CMD,
2132                 .len = sizeof(u32),
2133                 .data = &flags,
2134                 .flags = meta_flag,
2135         };
2136
2137         return iwl_send_cmd(priv, &cmd);
2138 }
2139
2140 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2141                            struct iwl_rx_mem_buffer *rxb)
2142 {
2143 #ifdef CONFIG_IWLWIFI_DEBUG
2144         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2145         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2146         IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2147                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2148 #endif
2149 }
2150 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2151
2152 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2153                                       struct iwl_rx_mem_buffer *rxb)
2154 {
2155         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2156         u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
2157         IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2158                         "notification for %s:\n", len,
2159                         get_cmd_string(pkt->hdr.cmd));
2160         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
2161 }
2162 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2163
2164 void iwl_rx_reply_error(struct iwl_priv *priv,
2165                         struct iwl_rx_mem_buffer *rxb)
2166 {
2167         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2168
2169         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2170                 "seq 0x%04X ser 0x%08X\n",
2171                 le32_to_cpu(pkt->u.err_resp.error_type),
2172                 get_cmd_string(pkt->u.err_resp.cmd_id),
2173                 pkt->u.err_resp.cmd_id,
2174                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2175                 le32_to_cpu(pkt->u.err_resp.error_info));
2176 }
2177 EXPORT_SYMBOL(iwl_rx_reply_error);
2178
2179 void iwl_clear_isr_stats(struct iwl_priv *priv)
2180 {
2181         memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2182 }
2183
2184 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2185                            const struct ieee80211_tx_queue_params *params)
2186 {
2187         struct iwl_priv *priv = hw->priv;
2188         unsigned long flags;
2189         int q;
2190
2191         IWL_DEBUG_MAC80211(priv, "enter\n");
2192
2193         if (!iwl_is_ready_rf(priv)) {
2194                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2195                 return -EIO;
2196         }
2197
2198         if (queue >= AC_NUM) {
2199                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2200                 return 0;
2201         }
2202
2203         q = AC_NUM - 1 - queue;
2204
2205         spin_lock_irqsave(&priv->lock, flags);
2206
2207         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2208         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2209         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2210         priv->qos_data.def_qos_parm.ac[q].edca_txop =
2211                         cpu_to_le16((params->txop * 32));
2212
2213         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2214         priv->qos_data.qos_active = 1;
2215
2216         if (priv->iw_mode == NL80211_IFTYPE_AP)
2217                 iwl_activate_qos(priv, 1);
2218         else if (priv->assoc_id && iwl_is_associated(priv))
2219                 iwl_activate_qos(priv, 0);
2220
2221         spin_unlock_irqrestore(&priv->lock, flags);
2222
2223         IWL_DEBUG_MAC80211(priv, "leave\n");
2224         return 0;
2225 }
2226 EXPORT_SYMBOL(iwl_mac_conf_tx);
2227
2228 static void iwl_ht_conf(struct iwl_priv *priv,
2229                             struct ieee80211_bss_conf *bss_conf)
2230 {
2231         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2232         struct ieee80211_sta_ht_cap *ht_cap;
2233         struct ieee80211_sta *sta;
2234
2235         IWL_DEBUG_MAC80211(priv, "enter: \n");
2236
2237         if (!ht_conf->is_ht)
2238                 return;
2239
2240
2241         /*
2242          * It is totally wrong to base global information on something
2243          * that is valid only when associated, alas, this driver works
2244          * that way and I don't know how to fix it.
2245          */
2246
2247         rcu_read_lock();
2248         sta = ieee80211_find_sta(priv->hw, priv->bssid);
2249         if (!sta) {
2250                 rcu_read_unlock();
2251                 return;
2252         }
2253         ht_cap = &sta->ht_cap;
2254
2255         ht_conf->sm_ps = (u8)((ht_cap->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
2256
2257         memcpy(&ht_conf->mcs, &ht_cap->mcs, 16);
2258
2259         ht_conf->ht_protection =
2260                 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2261         ht_conf->non_GF_STA_present =
2262                 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2263
2264         rcu_read_unlock();
2265
2266         IWL_DEBUG_MAC80211(priv, "leave\n");
2267 }
2268
2269 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2270 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2271                           struct ieee80211_vif *vif,
2272                           struct ieee80211_bss_conf *bss_conf,
2273                           u32 changes)
2274 {
2275         struct iwl_priv *priv = hw->priv;
2276         int ret;
2277
2278         IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2279
2280         if (!iwl_is_alive(priv))
2281                 return;
2282
2283         mutex_lock(&priv->mutex);
2284
2285         if (changes & BSS_CHANGED_BEACON &&
2286             priv->iw_mode == NL80211_IFTYPE_AP) {
2287                 dev_kfree_skb(priv->ibss_beacon);
2288                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2289         }
2290
2291         if (changes & BSS_CHANGED_BEACON_INT) {
2292                 priv->beacon_int = bss_conf->beacon_int;
2293                 /* TODO: in AP mode, do something to make this take effect */
2294         }
2295
2296         if (changes & BSS_CHANGED_BSSID) {
2297                 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2298
2299                 /*
2300                  * If there is currently a HW scan going on in the
2301                  * background then we need to cancel it else the RXON
2302                  * below/in post_associate will fail.
2303                  */
2304                 if (iwl_scan_cancel_timeout(priv, 100)) {
2305                         IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2306                         IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2307                         mutex_unlock(&priv->mutex);
2308                         return;
2309                 }
2310
2311                 /* mac80211 only sets assoc when in STATION mode */
2312                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2313                     bss_conf->assoc) {
2314                         memcpy(priv->staging_rxon.bssid_addr,
2315                                bss_conf->bssid, ETH_ALEN);
2316
2317                         /* currently needed in a few places */
2318                         memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2319                 } else {
2320                         priv->staging_rxon.filter_flags &=
2321                                 ~RXON_FILTER_ASSOC_MSK;
2322                 }
2323
2324         }
2325
2326         /*
2327          * This needs to be after setting the BSSID in case
2328          * mac80211 decides to do both changes at once because
2329          * it will invoke post_associate.
2330          */
2331         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2332             changes & BSS_CHANGED_BEACON) {
2333                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2334
2335                 if (beacon)
2336                         iwl_mac_beacon_update(hw, beacon);
2337         }
2338
2339         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2340                 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2341                                    bss_conf->use_short_preamble);
2342                 if (bss_conf->use_short_preamble)
2343                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2344                 else
2345                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2346         }
2347
2348         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2349                 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2350                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2351                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2352                 else
2353                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2354         }
2355
2356         if (changes & BSS_CHANGED_BASIC_RATES) {
2357                 /* XXX use this information
2358                  *
2359                  * To do that, remove code from iwl_set_rate() and put something
2360                  * like this here:
2361                  *
2362                 if (A-band)
2363                         priv->staging_rxon.ofdm_basic_rates =
2364                                 bss_conf->basic_rates;
2365                 else
2366                         priv->staging_rxon.ofdm_basic_rates =
2367                                 bss_conf->basic_rates >> 4;
2368                         priv->staging_rxon.cck_basic_rates =
2369                                 bss_conf->basic_rates & 0xF;
2370                  */
2371         }
2372
2373         if (changes & BSS_CHANGED_HT) {
2374                 iwl_ht_conf(priv, bss_conf);
2375
2376                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2377                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2378         }
2379
2380         if (changes & BSS_CHANGED_ASSOC) {
2381                 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2382                 if (bss_conf->assoc) {
2383                         priv->assoc_id = bss_conf->aid;
2384                         priv->beacon_int = bss_conf->beacon_int;
2385                         priv->timestamp = bss_conf->timestamp;
2386                         priv->assoc_capability = bss_conf->assoc_capability;
2387
2388                         /*
2389                          * We have just associated, don't start scan too early
2390                          * leave time for EAPOL exchange to complete.
2391                          *
2392                          * XXX: do this in mac80211
2393                          */
2394                         priv->next_scan_jiffies = jiffies +
2395                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2396                         if (!iwl_is_rfkill(priv))
2397                                 priv->cfg->ops->lib->post_associate(priv);
2398                 } else
2399                         priv->assoc_id = 0;
2400
2401         }
2402
2403         if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2404                 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2405                                    changes);
2406                 ret = iwl_send_rxon_assoc(priv);
2407                 if (!ret) {
2408                         /* Sync active_rxon with latest change. */
2409                         memcpy((void *)&priv->active_rxon,
2410                                 &priv->staging_rxon,
2411                                 sizeof(struct iwl_rxon_cmd));
2412                 }
2413         }
2414
2415         mutex_unlock(&priv->mutex);
2416
2417         IWL_DEBUG_MAC80211(priv, "leave\n");
2418 }
2419 EXPORT_SYMBOL(iwl_bss_info_changed);
2420
2421 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2422 {
2423         struct iwl_priv *priv = hw->priv;
2424         unsigned long flags;
2425         __le64 timestamp;
2426
2427         IWL_DEBUG_MAC80211(priv, "enter\n");
2428
2429         if (!iwl_is_ready_rf(priv)) {
2430                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2431                 return -EIO;
2432         }
2433
2434         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2435                 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2436                 return -EIO;
2437         }
2438
2439         spin_lock_irqsave(&priv->lock, flags);
2440
2441         if (priv->ibss_beacon)
2442                 dev_kfree_skb(priv->ibss_beacon);
2443
2444         priv->ibss_beacon = skb;
2445
2446         priv->assoc_id = 0;
2447         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2448         priv->timestamp = le64_to_cpu(timestamp);
2449
2450         IWL_DEBUG_MAC80211(priv, "leave\n");
2451         spin_unlock_irqrestore(&priv->lock, flags);
2452
2453         iwl_reset_qos(priv);
2454
2455         priv->cfg->ops->lib->post_associate(priv);
2456
2457
2458         return 0;
2459 }
2460 EXPORT_SYMBOL(iwl_mac_beacon_update);
2461
2462 int iwl_set_mode(struct iwl_priv *priv, int mode)
2463 {
2464         if (mode == NL80211_IFTYPE_ADHOC) {
2465                 const struct iwl_channel_info *ch_info;
2466
2467                 ch_info = iwl_get_channel_info(priv,
2468                         priv->band,
2469                         le16_to_cpu(priv->staging_rxon.channel));
2470
2471                 if (!ch_info || !is_channel_ibss(ch_info)) {
2472                         IWL_ERR(priv, "channel %d not IBSS channel\n",
2473                                   le16_to_cpu(priv->staging_rxon.channel));
2474                         return -EINVAL;
2475                 }
2476         }
2477
2478         iwl_connection_init_rx_config(priv, mode);
2479
2480         if (priv->cfg->ops->hcmd->set_rxon_chain)
2481                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2482
2483         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2484
2485         iwl_clear_stations_table(priv);
2486
2487         /* dont commit rxon if rf-kill is on*/
2488         if (!iwl_is_ready_rf(priv))
2489                 return -EAGAIN;
2490
2491         iwlcore_commit_rxon(priv);
2492
2493         return 0;
2494 }
2495 EXPORT_SYMBOL(iwl_set_mode);
2496
2497 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2498                                  struct ieee80211_if_init_conf *conf)
2499 {
2500         struct iwl_priv *priv = hw->priv;
2501         unsigned long flags;
2502
2503         IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2504
2505         if (priv->vif) {
2506                 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2507                 return -EOPNOTSUPP;
2508         }
2509
2510         spin_lock_irqsave(&priv->lock, flags);
2511         priv->vif = conf->vif;
2512         priv->iw_mode = conf->type;
2513
2514         spin_unlock_irqrestore(&priv->lock, flags);
2515
2516         mutex_lock(&priv->mutex);
2517
2518         if (conf->mac_addr) {
2519                 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2520                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2521         }
2522
2523         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2524                 /* we are not ready, will run again when ready */
2525                 set_bit(STATUS_MODE_PENDING, &priv->status);
2526
2527         mutex_unlock(&priv->mutex);
2528
2529         IWL_DEBUG_MAC80211(priv, "leave\n");
2530         return 0;
2531 }
2532 EXPORT_SYMBOL(iwl_mac_add_interface);
2533
2534 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2535                                      struct ieee80211_if_init_conf *conf)
2536 {
2537         struct iwl_priv *priv = hw->priv;
2538
2539         IWL_DEBUG_MAC80211(priv, "enter\n");
2540
2541         mutex_lock(&priv->mutex);
2542
2543         if (iwl_is_ready_rf(priv)) {
2544                 iwl_scan_cancel_timeout(priv, 100);
2545                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2546                 iwlcore_commit_rxon(priv);
2547         }
2548         if (priv->vif == conf->vif) {
2549                 priv->vif = NULL;
2550                 memset(priv->bssid, 0, ETH_ALEN);
2551         }
2552         mutex_unlock(&priv->mutex);
2553
2554         IWL_DEBUG_MAC80211(priv, "leave\n");
2555
2556 }
2557 EXPORT_SYMBOL(iwl_mac_remove_interface);
2558
2559 /**
2560  * iwl_mac_config - mac80211 config callback
2561  *
2562  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2563  * be set inappropriately and the driver currently sets the hardware up to
2564  * use it whenever needed.
2565  */
2566 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2567 {
2568         struct iwl_priv *priv = hw->priv;
2569         const struct iwl_channel_info *ch_info;
2570         struct ieee80211_conf *conf = &hw->conf;
2571         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2572         unsigned long flags = 0;
2573         int ret = 0;
2574         u16 ch;
2575         int scan_active = 0;
2576
2577         mutex_lock(&priv->mutex);
2578
2579         IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2580                                         conf->channel->hw_value, changed);
2581
2582         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2583                         test_bit(STATUS_SCANNING, &priv->status))) {
2584                 scan_active = 1;
2585                 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2586         }
2587
2588
2589         /* during scanning mac80211 will delay channel setting until
2590          * scan finish with changed = 0
2591          */
2592         if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2593                 if (scan_active)
2594                         goto set_ch_out;
2595
2596                 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2597                 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2598                 if (!is_channel_valid(ch_info)) {
2599                         IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2600                         ret = -EINVAL;
2601                         goto set_ch_out;
2602                 }
2603
2604                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2605                         !is_channel_ibss(ch_info)) {
2606                         IWL_ERR(priv, "channel %d in band %d not "
2607                                 "IBSS channel\n",
2608                                 conf->channel->hw_value, conf->channel->band);
2609                         ret = -EINVAL;
2610                         goto set_ch_out;
2611                 }
2612
2613                 spin_lock_irqsave(&priv->lock, flags);
2614
2615                 /* Configure HT40 channels */
2616                 ht_conf->is_ht = conf_is_ht(conf);
2617                 if (ht_conf->is_ht) {
2618                         if (conf_is_ht40_minus(conf)) {
2619                                 ht_conf->extension_chan_offset =
2620                                         IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2621                                 ht_conf->is_40mhz = true;
2622                         } else if (conf_is_ht40_plus(conf)) {
2623                                 ht_conf->extension_chan_offset =
2624                                         IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2625                                 ht_conf->is_40mhz = true;
2626                         } else {
2627                                 ht_conf->extension_chan_offset =
2628                                         IEEE80211_HT_PARAM_CHA_SEC_NONE;
2629                                 ht_conf->is_40mhz = false;
2630                         }
2631                 } else
2632                         ht_conf->is_40mhz = false;
2633                 /* Default to no protection. Protection mode will later be set
2634                  * from BSS config in iwl_ht_conf */
2635                 ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2636
2637                 /* if we are switching from ht to 2.4 clear flags
2638                  * from any ht related info since 2.4 does not
2639                  * support ht */
2640                 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2641                         priv->staging_rxon.flags = 0;
2642
2643                 iwl_set_rxon_channel(priv, conf->channel);
2644
2645                 iwl_set_flags_for_band(priv, conf->channel->band);
2646                 spin_unlock_irqrestore(&priv->lock, flags);
2647  set_ch_out:
2648                 /* The list of supported rates and rate mask can be different
2649                  * for each band; since the band may have changed, reset
2650                  * the rate mask to what mac80211 lists */
2651                 iwl_set_rate(priv);
2652         }
2653
2654         if (changed & IEEE80211_CONF_CHANGE_PS) {
2655                 ret = iwl_power_update_mode(priv, false);
2656                 if (ret)
2657                         IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
2658         }
2659
2660         if (changed & IEEE80211_CONF_CHANGE_POWER) {
2661                 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2662                         priv->tx_power_user_lmt, conf->power_level);
2663
2664                 iwl_set_tx_power(priv, conf->power_level, false);
2665         }
2666
2667         /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2668         if (priv->cfg->ops->hcmd->set_rxon_chain)
2669                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2670
2671         if (!iwl_is_ready(priv)) {
2672                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2673                 goto out;
2674         }
2675
2676         if (scan_active)
2677                 goto out;
2678
2679         if (memcmp(&priv->active_rxon,
2680                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2681                 iwlcore_commit_rxon(priv);
2682         else
2683                 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2684
2685
2686 out:
2687         IWL_DEBUG_MAC80211(priv, "leave\n");
2688         mutex_unlock(&priv->mutex);
2689         return ret;
2690 }
2691 EXPORT_SYMBOL(iwl_mac_config);
2692
2693 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2694                          struct ieee80211_tx_queue_stats *stats)
2695 {
2696         struct iwl_priv *priv = hw->priv;
2697         int i, avail;
2698         struct iwl_tx_queue *txq;
2699         struct iwl_queue *q;
2700         unsigned long flags;
2701
2702         IWL_DEBUG_MAC80211(priv, "enter\n");
2703
2704         if (!iwl_is_ready_rf(priv)) {
2705                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2706                 return -EIO;
2707         }
2708
2709         spin_lock_irqsave(&priv->lock, flags);
2710
2711         for (i = 0; i < AC_NUM; i++) {
2712                 txq = &priv->txq[i];
2713                 q = &txq->q;
2714                 avail = iwl_queue_space(q);
2715
2716                 stats[i].len = q->n_window - avail;
2717                 stats[i].limit = q->n_window - q->high_mark;
2718                 stats[i].count = q->n_window;
2719
2720         }
2721         spin_unlock_irqrestore(&priv->lock, flags);
2722
2723         IWL_DEBUG_MAC80211(priv, "leave\n");
2724
2725         return 0;
2726 }
2727 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2728
2729 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2730 {
2731         struct iwl_priv *priv = hw->priv;
2732         unsigned long flags;
2733
2734         mutex_lock(&priv->mutex);
2735         IWL_DEBUG_MAC80211(priv, "enter\n");
2736
2737         spin_lock_irqsave(&priv->lock, flags);
2738         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
2739         spin_unlock_irqrestore(&priv->lock, flags);
2740
2741         iwl_reset_qos(priv);
2742
2743         spin_lock_irqsave(&priv->lock, flags);
2744         priv->assoc_id = 0;
2745         priv->assoc_capability = 0;
2746         priv->assoc_station_added = 0;
2747
2748         /* new association get rid of ibss beacon skb */
2749         if (priv->ibss_beacon)
2750                 dev_kfree_skb(priv->ibss_beacon);
2751
2752         priv->ibss_beacon = NULL;
2753
2754         priv->beacon_int = priv->vif->bss_conf.beacon_int;
2755         priv->timestamp = 0;
2756         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2757                 priv->beacon_int = 0;
2758
2759         spin_unlock_irqrestore(&priv->lock, flags);
2760
2761         if (!iwl_is_ready_rf(priv)) {
2762                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2763                 mutex_unlock(&priv->mutex);
2764                 return;
2765         }
2766
2767         /* we are restarting association process
2768          * clear RXON_FILTER_ASSOC_MSK bit
2769          */
2770         if (priv->iw_mode != NL80211_IFTYPE_AP) {
2771                 iwl_scan_cancel_timeout(priv, 100);
2772                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2773                 iwlcore_commit_rxon(priv);
2774         }
2775
2776         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2777                 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2778                 mutex_unlock(&priv->mutex);
2779                 return;
2780         }
2781
2782         iwl_set_rate(priv);
2783
2784         mutex_unlock(&priv->mutex);
2785
2786         IWL_DEBUG_MAC80211(priv, "leave\n");
2787 }
2788 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2789
2790 #ifdef CONFIG_IWLWIFI_DEBUGFS
2791
2792 #define IWL_TRAFFIC_DUMP_SIZE   (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2793
2794 void iwl_reset_traffic_log(struct iwl_priv *priv)
2795 {
2796         priv->tx_traffic_idx = 0;
2797         priv->rx_traffic_idx = 0;
2798         if (priv->tx_traffic)
2799                 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2800         if (priv->rx_traffic)
2801                 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2802 }
2803
2804 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2805 {
2806         u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2807
2808         if (iwl_debug_level & IWL_DL_TX) {
2809                 if (!priv->tx_traffic) {
2810                         priv->tx_traffic =
2811                                 kzalloc(traffic_size, GFP_KERNEL);
2812                         if (!priv->tx_traffic)
2813                                 return -ENOMEM;
2814                 }
2815         }
2816         if (iwl_debug_level & IWL_DL_RX) {
2817                 if (!priv->rx_traffic) {
2818                         priv->rx_traffic =
2819                                 kzalloc(traffic_size, GFP_KERNEL);
2820                         if (!priv->rx_traffic)
2821                                 return -ENOMEM;
2822                 }
2823         }
2824         iwl_reset_traffic_log(priv);
2825         return 0;
2826 }
2827 EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2828
2829 void iwl_free_traffic_mem(struct iwl_priv *priv)
2830 {
2831         kfree(priv->tx_traffic);
2832         priv->tx_traffic = NULL;
2833
2834         kfree(priv->rx_traffic);
2835         priv->rx_traffic = NULL;
2836 }
2837 EXPORT_SYMBOL(iwl_free_traffic_mem);
2838
2839 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
2840                       u16 length, struct ieee80211_hdr *header)
2841 {
2842         __le16 fc;
2843         u16 len;
2844
2845         if (likely(!(iwl_debug_level & IWL_DL_TX)))
2846                 return;
2847
2848         if (!priv->tx_traffic)
2849                 return;
2850
2851         fc = header->frame_control;
2852         if (ieee80211_is_data(fc)) {
2853                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2854                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
2855                 memcpy((priv->tx_traffic +
2856                        (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2857                        header, len);
2858                 priv->tx_traffic_idx =
2859                         (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2860         }
2861 }
2862 EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
2863
2864 void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
2865                       u16 length, struct ieee80211_hdr *header)
2866 {
2867         __le16 fc;
2868         u16 len;
2869
2870         if (likely(!(iwl_debug_level & IWL_DL_RX)))
2871                 return;
2872
2873         if (!priv->rx_traffic)
2874                 return;
2875
2876         fc = header->frame_control;
2877         if (ieee80211_is_data(fc)) {
2878                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2879                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
2880                 memcpy((priv->rx_traffic +
2881                        (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2882                        header, len);
2883                 priv->rx_traffic_idx =
2884                         (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2885         }
2886 }
2887 EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
2888
2889 const char *get_mgmt_string(int cmd)
2890 {
2891         switch (cmd) {
2892                 IWL_CMD(MANAGEMENT_ASSOC_REQ);
2893                 IWL_CMD(MANAGEMENT_ASSOC_RESP);
2894                 IWL_CMD(MANAGEMENT_REASSOC_REQ);
2895                 IWL_CMD(MANAGEMENT_REASSOC_RESP);
2896                 IWL_CMD(MANAGEMENT_PROBE_REQ);
2897                 IWL_CMD(MANAGEMENT_PROBE_RESP);
2898                 IWL_CMD(MANAGEMENT_BEACON);
2899                 IWL_CMD(MANAGEMENT_ATIM);
2900                 IWL_CMD(MANAGEMENT_DISASSOC);
2901                 IWL_CMD(MANAGEMENT_AUTH);
2902                 IWL_CMD(MANAGEMENT_DEAUTH);
2903                 IWL_CMD(MANAGEMENT_ACTION);
2904         default:
2905                 return "UNKNOWN";
2906
2907         }
2908 }
2909
2910 const char *get_ctrl_string(int cmd)
2911 {
2912         switch (cmd) {
2913                 IWL_CMD(CONTROL_BACK_REQ);
2914                 IWL_CMD(CONTROL_BACK);
2915                 IWL_CMD(CONTROL_PSPOLL);
2916                 IWL_CMD(CONTROL_RTS);
2917                 IWL_CMD(CONTROL_CTS);
2918                 IWL_CMD(CONTROL_ACK);
2919                 IWL_CMD(CONTROL_CFEND);
2920                 IWL_CMD(CONTROL_CFENDACK);
2921         default:
2922                 return "UNKNOWN";
2923
2924         }
2925 }
2926
2927 void iwl_clear_tx_stats(struct iwl_priv *priv)
2928 {
2929         memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
2930
2931 }
2932
2933 void iwl_clear_rx_stats(struct iwl_priv *priv)
2934 {
2935         memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
2936 }
2937
2938 /*
2939  * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
2940  * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
2941  * Use debugFs to display the rx/rx_statistics
2942  * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
2943  * information will be recorded, but DATA pkt still will be recorded
2944  * for the reason of iwl_led.c need to control the led blinking based on
2945  * number of tx and rx data.
2946  *
2947  */
2948 void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
2949 {
2950         struct traffic_stats    *stats;
2951
2952         if (is_tx)
2953                 stats = &priv->tx_stats;
2954         else
2955                 stats = &priv->rx_stats;
2956
2957         if (ieee80211_is_mgmt(fc)) {
2958                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2959                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
2960                         stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
2961                         break;
2962                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
2963                         stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
2964                         break;
2965                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
2966                         stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
2967                         break;
2968                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
2969                         stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
2970                         break;
2971                 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
2972                         stats->mgmt[MANAGEMENT_PROBE_REQ]++;
2973                         break;
2974                 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
2975                         stats->mgmt[MANAGEMENT_PROBE_RESP]++;
2976                         break;
2977                 case cpu_to_le16(IEEE80211_STYPE_BEACON):
2978                         stats->mgmt[MANAGEMENT_BEACON]++;
2979                         break;
2980                 case cpu_to_le16(IEEE80211_STYPE_ATIM):
2981                         stats->mgmt[MANAGEMENT_ATIM]++;
2982                         break;
2983                 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
2984                         stats->mgmt[MANAGEMENT_DISASSOC]++;
2985                         break;
2986                 case cpu_to_le16(IEEE80211_STYPE_AUTH):
2987                         stats->mgmt[MANAGEMENT_AUTH]++;
2988                         break;
2989                 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
2990                         stats->mgmt[MANAGEMENT_DEAUTH]++;
2991                         break;
2992                 case cpu_to_le16(IEEE80211_STYPE_ACTION):
2993                         stats->mgmt[MANAGEMENT_ACTION]++;
2994                         break;
2995                 }
2996         } else if (ieee80211_is_ctl(fc)) {
2997                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2998                 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
2999                         stats->ctrl[CONTROL_BACK_REQ]++;
3000                         break;
3001                 case cpu_to_le16(IEEE80211_STYPE_BACK):
3002                         stats->ctrl[CONTROL_BACK]++;
3003                         break;
3004                 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
3005                         stats->ctrl[CONTROL_PSPOLL]++;
3006                         break;
3007                 case cpu_to_le16(IEEE80211_STYPE_RTS):
3008                         stats->ctrl[CONTROL_RTS]++;
3009                         break;
3010                 case cpu_to_le16(IEEE80211_STYPE_CTS):
3011                         stats->ctrl[CONTROL_CTS]++;
3012                         break;
3013                 case cpu_to_le16(IEEE80211_STYPE_ACK):
3014                         stats->ctrl[CONTROL_ACK]++;
3015                         break;
3016                 case cpu_to_le16(IEEE80211_STYPE_CFEND):
3017                         stats->ctrl[CONTROL_CFEND]++;
3018                         break;
3019                 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
3020                         stats->ctrl[CONTROL_CFENDACK]++;
3021                         break;
3022                 }
3023         } else {
3024                 /* data */
3025                 stats->data_cnt++;
3026                 stats->data_bytes += len;
3027         }
3028 }
3029 EXPORT_SYMBOL(iwl_update_stats);
3030 #endif
3031
3032 #ifdef CONFIG_PM
3033
3034 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3035 {
3036         struct iwl_priv *priv = pci_get_drvdata(pdev);
3037
3038         /*
3039          * This function is called when system goes into suspend state
3040          * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
3041          * first but since iwl_mac_stop() has no knowledge of who the caller is,
3042          * it will not call apm_ops.stop() to stop the DMA operation.
3043          * Calling apm_ops.stop here to make sure we stop the DMA.
3044          */
3045         priv->cfg->ops->lib->apm_ops.stop(priv);
3046
3047         pci_save_state(pdev);
3048         pci_disable_device(pdev);
3049         pci_set_power_state(pdev, PCI_D3hot);
3050
3051         return 0;
3052 }
3053 EXPORT_SYMBOL(iwl_pci_suspend);
3054
3055 int iwl_pci_resume(struct pci_dev *pdev)
3056 {
3057         struct iwl_priv *priv = pci_get_drvdata(pdev);
3058         int ret;
3059
3060         pci_set_power_state(pdev, PCI_D0);
3061         ret = pci_enable_device(pdev);
3062         if (ret)
3063                 return ret;
3064         pci_restore_state(pdev);
3065         iwl_enable_interrupts(priv);
3066
3067         return 0;
3068 }
3069 EXPORT_SYMBOL(iwl_pci_resume);
3070
3071 #endif /* CONFIG_PM */