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.single_chain_sufficient;
 611 }
 612
 613 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
 614                                    enum ieee80211_band band,
 615                                    u16 channel, u8 extension_chan_offset)
 616 {
 617         const struct iwl_channel_info *ch_info;
 618
 619         ch_info = iwl_get_channel_info(priv, band, channel);
 620         if (!is_channel_valid(ch_info))
 621                 return 0;
 622
 623         if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
 624                 return !(ch_info->ht40_extension_channel &
 625                                         IEEE80211_CHAN_NO_HT40PLUS);
 626         else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
 627                 return !(ch_info->ht40_extension_channel &
 628                                         IEEE80211_CHAN_NO_HT40MINUS);
 629
 630         return 0;
 631 }
 632
 633 u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
 634                          struct ieee80211_sta_ht_cap *sta_ht_inf)
 635 {
 636         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
 637
 638         if (!ht_conf->is_ht || !ht_conf->is_40mhz)
 639                 return 0;
 640
 641         /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
 642          * the bit will not set if it is pure 40MHz case
 643          */
 644         if (sta_ht_inf) {
 645                 if (!sta_ht_inf->ht_supported)
 646                         return 0;
 647         }
 648 #ifdef CONFIG_IWLWIFI_DEBUG
 649         if (priv->disable_ht40)
 650                 return 0;
 651 #endif
 652         return iwl_is_channel_extension(priv, priv->band,
 653                         le16_to_cpu(priv->staging_rxon.channel),
 654                         ht_conf->extension_chan_offset);
 655 }
 656 EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
 657
 658 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
 659 {
 660         u16 new_val = 0;
 661         u16 beacon_factor = 0;
 662
 663         beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
 664         new_val = beacon_val / beacon_factor;
 665
 666         if (!new_val)
 667                 new_val = max_beacon_val;
 668
 669         return new_val;
 670 }
 671
 672 void iwl_setup_rxon_timing(struct iwl_priv *priv)
 673 {
 674         u64 tsf;
 675         s32 interval_tm, rem;
 676         unsigned long flags;
 677         struct ieee80211_conf *conf = NULL;
 678         u16 beacon_int;
 679
 680         conf = ieee80211_get_hw_conf(priv->hw);
 681
 682         spin_lock_irqsave(&priv->lock, flags);
 683         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 684         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 685
 686         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 687                 beacon_int = priv->beacon_int;
 688                 priv->rxon_timing.atim_window = 0;
 689         } else {
 690                 beacon_int = priv->vif->bss_conf.beacon_int;
 691
 692                 /* TODO: we need to get atim_window from upper stack
 693                  * for now we set to 0 */
 694                 priv->rxon_timing.atim_window = 0;
 695         }
 696
 697         beacon_int = iwl_adjust_beacon_interval(beacon_int,
 698                                 priv->hw_params.max_beacon_itrvl * 1024);
 699         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 700
 701         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 702         interval_tm = beacon_int * 1024;
 703         rem = do_div(tsf, interval_tm);
 704         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 705
 706         spin_unlock_irqrestore(&priv->lock, flags);
 707         IWL_DEBUG_ASSOC(priv,
 708                         "beacon interval %d beacon timer %d beacon tim %d\n",
 709                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 710                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 711                         le16_to_cpu(priv->rxon_timing.atim_window));
 712 }
 713 EXPORT_SYMBOL(iwl_setup_rxon_timing);
 714
 715 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 716 {
 717         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 718
 719         if (hw_decrypt)
 720                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 721         else
 722                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 723
 724 }
 725 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
 726
 727 /**
 728  * iwl_check_rxon_cmd - validate RXON structure is valid
 729  *
 730  * NOTE:  This is really only useful during development and can eventually
 731  * be #ifdef'd out once the driver is stable and folks aren't actively
 732  * making changes
 733  */
 734 int iwl_check_rxon_cmd(struct iwl_priv *priv)
 735 {
 736         int error = 0;
 737         int counter = 1;
 738         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 739
 740         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 741                 error |= le32_to_cpu(rxon->flags &
 742                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 743                                  RXON_FLG_RADAR_DETECT_MSK));
 744                 if (error)
 745                         IWL_WARN(priv, "check 24G fields %d | %d\n",
 746                                     counter++, error);
 747         } else {
 748                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 749                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 750                 if (error)
 751                         IWL_WARN(priv, "check 52 fields %d | %d\n",
 752                                     counter++, error);
 753                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 754                 if (error)
 755                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
 756                                     counter++, error);
 757         }
 758         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 759         if (error)
 760                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
 761
 762         /* make sure basic rates 6Mbps and 1Mbps are supported */
 763         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 764                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 765         if (error)
 766                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
 767
 768         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 769         if (error)
 770                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
 771
 772         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 773                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 774         if (error)
 775                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
 776                             counter++, error);
 777
 778         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 779                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 780         if (error)
 781                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
 782                             counter++, error);
 783
 784         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 785                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 786         if (error)
 787                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
 788                             counter++, error);
 789
 790         if (error)
 791                 IWL_WARN(priv, "Tuning to channel %d\n",
 792                             le16_to_cpu(rxon->channel));
 793
 794         if (error) {
 795                 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
 796                 return -1;
 797         }
 798         return 0;
 799 }
 800 EXPORT_SYMBOL(iwl_check_rxon_cmd);
 801
 802 /**
 803  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 804  * @priv: staging_rxon is compared to active_rxon
 805  *
 806  * If the RXON structure is changing enough to require a new tune,
 807  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 808  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 809  */
 810 int iwl_full_rxon_required(struct iwl_priv *priv)
 811 {
 812
 813         /* These items are only settable from the full RXON command */
 814         if (!(iwl_is_associated(priv)) ||
 815             compare_ether_addr(priv->staging_rxon.bssid_addr,
 816                                priv->active_rxon.bssid_addr) ||
 817             compare_ether_addr(priv->staging_rxon.node_addr,
 818                                priv->active_rxon.node_addr) ||
 819             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 820                                priv->active_rxon.wlap_bssid_addr) ||
 821             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 822             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 823             (priv->staging_rxon.air_propagation !=
 824              priv->active_rxon.air_propagation) ||
 825             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 826              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 827             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 828              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 829             (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
 830              priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
 831             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 832                 return 1;
 833
 834         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 835          * be updated with the RXON_ASSOC command -- however only some
 836          * flag transitions are allowed using RXON_ASSOC */
 837
 838         /* Check if we are not switching bands */
 839         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 840             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 841                 return 1;
 842
 843         /* Check if we are switching association toggle */
 844         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 845                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 846                 return 1;
 847
 848         return 0;
 849 }
 850 EXPORT_SYMBOL(iwl_full_rxon_required);
 851
 852 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 853 {
 854         int i;
 855         int rate_mask;
 856
 857         /* Set rate mask*/
 858         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 859                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 860         else
 861                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 862
 863         /* Find lowest valid rate */
 864         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 865                                         i = iwl_rates[i].next_ieee) {
 866                 if (rate_mask & (1 << i))
 867                         return iwl_rates[i].plcp;
 868         }
 869
 870         /* No valid rate was found. Assign the lowest one */
 871         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 872                 return IWL_RATE_1M_PLCP;
 873         else
 874                 return IWL_RATE_6M_PLCP;
 875 }
 876 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
 877
 878 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
 879 {
 880         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 881
 882         if (!ht_conf->is_ht) {
 883                 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
 884                         RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
 885                         RXON_FLG_HT40_PROT_MSK |
 886                         RXON_FLG_HT_PROT_MSK);
 887                 return;
 888         }
 889
 890         /* FIXME: if the definition of ht_protection changed, the "translation"
 891          * will be needed for rxon->flags
 892          */
 893         rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
 894
 895         /* Set up channel bandwidth:
 896          * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
 897         /* clear the HT channel mode before set the mode */
 898         rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
 899                          RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
 900         if (iwl_is_ht40_tx_allowed(priv, NULL)) {
 901                 /* pure ht40 */
 902                 if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
 903                         rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
 904                         /* Note: control channel is opposite of extension channel */
 905                         switch (ht_conf->extension_chan_offset) {
 906                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 907                                 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 908                                 break;
 909                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 910                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 911                                 break;
 912                         }
 913                 } else {
 914                         /* Note: control channel is opposite of extension channel */
 915                         switch (ht_conf->extension_chan_offset) {
 916                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 917                                 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
 918                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
 919                                 break;
 920                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 921                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 922                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
 923                                 break;
 924                         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
 925                         default:
 926                                 /* channel location only valid if in Mixed mode */
 927                                 IWL_ERR(priv, "invalid extension channel offset\n");
 928                                 break;
 929                         }
 930                 }
 931         } else {
 932                 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
 933         }
 934
 935         if (priv->cfg->ops->hcmd->set_rxon_chain)
 936                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
 937
 938         IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
 939                         "extension channel offset 0x%x\n",
 940                         le32_to_cpu(rxon->flags), ht_conf->ht_protection,
 941                         ht_conf->extension_chan_offset);
 942         return;
 943 }
 944 EXPORT_SYMBOL(iwl_set_rxon_ht);
 945
 946 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 947 #define IWL_NUM_RX_CHAINS_SINGLE        2
 948 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 949 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 950
 951 /* Determine how many receiver/antenna chains to use.
 952  * More provides better reception via diversity.  Fewer saves power.
 953  * MIMO (dual stream) requires at least 2, but works better with 3.
 954  * This does not determine *which* chains to use, just how many.
 955  */
 956 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 957 {
 958         /* # of Rx chains to use when expecting MIMO. */
 959         if (is_single_rx_stream(priv))
 960                 return IWL_NUM_RX_CHAINS_SINGLE;
 961         else
 962                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 963 }
 964
 965 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 966 {
 967         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 968
 969         /* # Rx chains when idling and maybe trying to save power */
 970
 971         /*
 972          * XXX: this is incorrect!!
 973          *      we always indicate to the AP that
 974          *      our SM PS mode is "disabled"
 975          */
 976
 977         return is_cam ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
 978 }
 979
 980 /* up to 4 chains */
 981 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
 982 {
 983         u8 res;
 984         res = (chain_bitmap & BIT(0)) >> 0;
 985         res += (chain_bitmap & BIT(1)) >> 1;
 986         res += (chain_bitmap & BIT(2)) >> 2;
 987         res += (chain_bitmap & BIT(4)) >> 4;
 988         return res;
 989 }
 990
 991 /**
 992  * iwl_is_monitor_mode - Determine if interface in monitor mode
 993  *
 994  * priv->iw_mode is set in add_interface, but add_interface is
 995  * never called for monitor mode. The only way mac80211 informs us about
 996  * monitor mode is through configuring filters (call to configure_filter).
 997  */
 998 bool iwl_is_monitor_mode(struct iwl_priv *priv)
 999 {
1000         return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1001 }
1002 EXPORT_SYMBOL(iwl_is_monitor_mode);
1003
1004 /**
1005  * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1006  *
1007  * Selects how many and which Rx receivers/antennas/chains to use.
1008  * This should not be used for scan command ... it puts data in wrong place.
1009  */
1010 void iwl_set_rxon_chain(struct iwl_priv *priv)
1011 {
1012         bool is_single = is_single_rx_stream(priv);
1013         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1014         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1015         u32 active_chains;
1016         u16 rx_chain;
1017
1018         /* Tell uCode which antennas are actually connected.
1019          * Before first association, we assume all antennas are connected.
1020          * Just after first association, iwl_chain_noise_calibration()
1021          *    checks which antennas actually *are* connected. */
1022          if (priv->chain_noise_data.active_chains)
1023                 active_chains = priv->chain_noise_data.active_chains;
1024         else
1025                 active_chains = priv->hw_params.valid_rx_ant;
1026
1027         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1028
1029         /* How many receivers should we use? */
1030         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1031         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1032
1033
1034         /* correct rx chain count according hw settings
1035          * and chain noise calibration
1036          */
1037         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1038         if (valid_rx_cnt < active_rx_cnt)
1039                 active_rx_cnt = valid_rx_cnt;
1040
1041         if (valid_rx_cnt < idle_rx_cnt)
1042                 idle_rx_cnt = valid_rx_cnt;
1043
1044         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1045         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
1046
1047         /* copied from 'iwl_bg_request_scan()' */
1048         /* Force use of chains B and C (0x6) for Rx for 4965
1049          * Avoid A (0x1) because of its off-channel reception on A-band.
1050          * MIMO is not used here, but value is required */
1051         if (iwl_is_monitor_mode(priv) &&
1052             !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1053             ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1054                 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1055                 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1056                 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1057                 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1058         }
1059
1060         priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1061
1062         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1063                 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1064         else
1065                 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1066
1067         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1068                         priv->staging_rxon.rx_chain,
1069                         active_rx_cnt, idle_rx_cnt);
1070
1071         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1072                 active_rx_cnt < idle_rx_cnt);
1073 }
1074 EXPORT_SYMBOL(iwl_set_rxon_chain);
1075
1076 /**
1077  * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1078  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1079  * @channel: Any channel valid for the requested phymode
1080
1081  * In addition to setting the staging RXON, priv->phymode is also set.
1082  *
1083  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
1084  * in the staging RXON flag structure based on the phymode
1085  */
1086 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1087 {
1088         enum ieee80211_band band = ch->band;
1089         u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1090
1091         if (!iwl_get_channel_info(priv, band, channel)) {
1092                 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1093                                channel, band);
1094                 return -EINVAL;
1095         }
1096
1097         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1098             (priv->band == band))
1099                 return 0;
1100
1101         priv->staging_rxon.channel = cpu_to_le16(channel);
1102         if (band == IEEE80211_BAND_5GHZ)
1103                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1104         else
1105                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1106
1107         priv->band = band;
1108
1109         IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1110
1111         return 0;
1112 }
1113 EXPORT_SYMBOL(iwl_set_rxon_channel);
1114
1115 void iwl_set_flags_for_band(struct iwl_priv *priv,
1116                             enum ieee80211_band band)
1117 {
1118         if (band == IEEE80211_BAND_5GHZ) {
1119                 priv->staging_rxon.flags &=
1120                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1121                       | RXON_FLG_CCK_MSK);
1122                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1123         } else {
1124                 /* Copied from iwl_post_associate() */
1125                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1126                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1127                 else
1128                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1129
1130                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1131                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1132
1133                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1134                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1135                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1136         }
1137 }
1138
1139 /*
1140  * initialize rxon structure with default values from eeprom
1141  */
1142 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1143 {
1144         const struct iwl_channel_info *ch_info;
1145
1146         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1147
1148         switch (mode) {
1149         case NL80211_IFTYPE_AP:
1150                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1151                 break;
1152
1153         case NL80211_IFTYPE_STATION:
1154                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1155                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1156                 break;
1157
1158         case NL80211_IFTYPE_ADHOC:
1159                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1160                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1161                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1162                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1163                 break;
1164
1165         default:
1166                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1167                 break;
1168         }
1169
1170 #if 0
1171         /* TODO:  Figure out when short_preamble would be set and cache from
1172          * that */
1173         if (!hw_to_local(priv->hw)->short_preamble)
1174                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1175         else
1176                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1177 #endif
1178
1179         ch_info = iwl_get_channel_info(priv, priv->band,
1180                                        le16_to_cpu(priv->active_rxon.channel));
1181
1182         if (!ch_info)
1183                 ch_info = &priv->channel_info[0];
1184
1185         /*
1186          * in some case A channels are all non IBSS
1187          * in this case force B/G channel
1188          */
1189         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1190             !(is_channel_ibss(ch_info)))
1191                 ch_info = &priv->channel_info[0];
1192
1193         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1194         priv->band = ch_info->band;
1195
1196         iwl_set_flags_for_band(priv, priv->band);
1197
1198         priv->staging_rxon.ofdm_basic_rates =
1199             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1200         priv->staging_rxon.cck_basic_rates =
1201             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1202
1203         /* clear both MIX and PURE40 mode flag */
1204         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1205                                         RXON_FLG_CHANNEL_MODE_PURE_40);
1206         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1207         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1208         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1209         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1210         priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1211 }
1212 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1213
1214 static void iwl_set_rate(struct iwl_priv *priv)
1215 {
1216         const struct ieee80211_supported_band *hw = NULL;
1217         struct ieee80211_rate *rate;
1218         int i;
1219
1220         hw = iwl_get_hw_mode(priv, priv->band);
1221         if (!hw) {
1222                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1223                 return;
1224         }
1225
1226         priv->active_rate = 0;
1227         priv->active_rate_basic = 0;
1228
1229         for (i = 0; i < hw->n_bitrates; i++) {
1230                 rate = &(hw->bitrates[i]);
1231                 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
1232                         priv->active_rate |= (1 << rate->hw_value);
1233         }
1234
1235         IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1236                        priv->active_rate, priv->active_rate_basic);
1237
1238         /*
1239          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1240          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1241          * OFDM
1242          */
1243         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1244                 priv->staging_rxon.cck_basic_rates =
1245                     ((priv->active_rate_basic &
1246                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1247         else
1248                 priv->staging_rxon.cck_basic_rates =
1249                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1250
1251         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1252                 priv->staging_rxon.ofdm_basic_rates =
1253                     ((priv->active_rate_basic &
1254                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1255                       IWL_FIRST_OFDM_RATE) & 0xFF;
1256         else
1257                 priv->staging_rxon.ofdm_basic_rates =
1258                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1259 }
1260
1261 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1262 {
1263         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1264         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1265         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1266         IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1267                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1268         rxon->channel = csa->channel;
1269         priv->staging_rxon.channel = csa->channel;
1270 }
1271 EXPORT_SYMBOL(iwl_rx_csa);
1272
1273 #ifdef CONFIG_IWLWIFI_DEBUG
1274 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1275 {
1276         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1277
1278         IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1279         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1280         IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1281         IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1282         IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1283                         le32_to_cpu(rxon->filter_flags));
1284         IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1285         IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1286                         rxon->ofdm_basic_rates);
1287         IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1288         IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1289         IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1290         IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1291 }
1292 #endif
1293 /**
1294  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1295  */
1296 void iwl_irq_handle_error(struct iwl_priv *priv)
1297 {
1298         /* Set the FW error flag -- cleared on iwl_down */
1299         set_bit(STATUS_FW_ERROR, &priv->status);
1300
1301         /* Cancel currently queued command. */
1302         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1303
1304 #ifdef CONFIG_IWLWIFI_DEBUG
1305         if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) {
1306                 priv->cfg->ops->lib->dump_nic_error_log(priv);
1307                 priv->cfg->ops->lib->dump_nic_event_log(priv);
1308                 iwl_print_rx_config_cmd(priv);
1309         }
1310 #endif
1311
1312         wake_up_interruptible(&priv->wait_command_queue);
1313
1314         /* Keep the restart process from trying to send host
1315          * commands by clearing the INIT status bit */
1316         clear_bit(STATUS_READY, &priv->status);
1317
1318         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1319                 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1320                           "Restarting adapter due to uCode error.\n");
1321
1322                 if (priv->cfg->mod_params->restart_fw)
1323                         queue_work(priv->workqueue, &priv->restart);
1324         }
1325 }
1326 EXPORT_SYMBOL(iwl_irq_handle_error);
1327
1328 void iwl_configure_filter(struct ieee80211_hw *hw,
1329                           unsigned int changed_flags,
1330                           unsigned int *total_flags,
1331                           u64 multicast)
1332 {
1333         struct iwl_priv *priv = hw->priv;
1334         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1335
1336         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1337                         changed_flags, *total_flags);
1338
1339         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1340                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1341                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
1342                 else
1343                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1344         }
1345         if (changed_flags & FIF_ALLMULTI) {
1346                 if (*total_flags & FIF_ALLMULTI)
1347                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1348                 else
1349                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1350         }
1351         if (changed_flags & FIF_CONTROL) {
1352                 if (*total_flags & FIF_CONTROL)
1353                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1354                 else
1355                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1356         }
1357         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1358                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1359                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1360                 else
1361                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1362         }
1363
1364         /* We avoid iwl_commit_rxon here to commit the new filter flags
1365          * since mac80211 will call ieee80211_hw_config immediately.
1366          * (mc_list is not supported at this time). Otherwise, we need to
1367          * queue a background iwl_commit_rxon work.
1368          */
1369
1370         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1371                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1372 }
1373 EXPORT_SYMBOL(iwl_configure_filter);
1374
1375 int iwl_setup_mac(struct iwl_priv *priv)
1376 {
1377         int ret;
1378         struct ieee80211_hw *hw = priv->hw;
1379         hw->rate_control_algorithm = "iwl-agn-rs";
1380
1381         /* Tell mac80211 our characteristics */
1382         hw->flags = IEEE80211_HW_SIGNAL_DBM |
1383                     IEEE80211_HW_NOISE_DBM |
1384                     IEEE80211_HW_AMPDU_AGGREGATION |
1385                     IEEE80211_HW_SPECTRUM_MGMT;
1386
1387         if (!priv->cfg->broken_powersave)
1388                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
1389                              IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
1390
1391         hw->wiphy->interface_modes =
1392                 BIT(NL80211_IFTYPE_STATION) |
1393                 BIT(NL80211_IFTYPE_ADHOC);
1394
1395         hw->wiphy->custom_regulatory = true;
1396
1397         /* Firmware does not support this */
1398         hw->wiphy->disable_beacon_hints = true;
1399
1400         /*
1401          * For now, disable PS by default because it affects
1402          * RX performance significantly.
1403          */
1404         hw->wiphy->ps_default = false;
1405
1406         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1407         /* we create the 802.11 header and a zero-length SSID element */
1408         hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
1409
1410         /* Default value; 4 EDCA QOS priorities */
1411         hw->queues = 4;
1412
1413         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1414
1415         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1416                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1417                         &priv->bands[IEEE80211_BAND_2GHZ];
1418         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1419                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1420                         &priv->bands[IEEE80211_BAND_5GHZ];
1421
1422         ret = ieee80211_register_hw(priv->hw);
1423         if (ret) {
1424                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1425                 return ret;
1426         }
1427         priv->mac80211_registered = 1;
1428
1429         return 0;
1430 }
1431 EXPORT_SYMBOL(iwl_setup_mac);
1432
1433 int iwl_set_hw_params(struct iwl_priv *priv)
1434 {
1435         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1436         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1437         if (priv->cfg->mod_params->amsdu_size_8K)
1438                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1439         else
1440                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1441         priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1442
1443         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1444
1445         if (priv->cfg->mod_params->disable_11n)
1446                 priv->cfg->sku &= ~IWL_SKU_N;
1447
1448         /* Device-specific setup */
1449         return priv->cfg->ops->lib->set_hw_params(priv);
1450 }
1451 EXPORT_SYMBOL(iwl_set_hw_params);
1452
1453 int iwl_init_drv(struct iwl_priv *priv)
1454 {
1455         int ret;
1456
1457         priv->ibss_beacon = NULL;
1458
1459         spin_lock_init(&priv->lock);
1460         spin_lock_init(&priv->sta_lock);
1461         spin_lock_init(&priv->hcmd_lock);
1462
1463         INIT_LIST_HEAD(&priv->free_frames);
1464
1465         mutex_init(&priv->mutex);
1466
1467         /* Clear the driver's (not device's) station table */
1468         iwl_clear_stations_table(priv);
1469
1470         priv->data_retry_limit = -1;
1471         priv->ieee_channels = NULL;
1472         priv->ieee_rates = NULL;
1473         priv->band = IEEE80211_BAND_2GHZ;
1474
1475         priv->iw_mode = NL80211_IFTYPE_STATION;
1476
1477         /* Choose which receivers/antennas to use */
1478         if (priv->cfg->ops->hcmd->set_rxon_chain)
1479                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1480
1481         iwl_init_scan_params(priv);
1482
1483         iwl_reset_qos(priv);
1484
1485         priv->qos_data.qos_active = 0;
1486         priv->qos_data.qos_cap.val = 0;
1487
1488         priv->rates_mask = IWL_RATES_MASK;
1489         /* Set the tx_power_user_lmt to the lowest power level
1490          * this value will get overwritten by channel max power avg
1491          * from eeprom */
1492         priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MIN;
1493
1494         ret = iwl_init_channel_map(priv);
1495         if (ret) {
1496                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1497                 goto err;
1498         }
1499
1500         ret = iwlcore_init_geos(priv);
1501         if (ret) {
1502                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1503                 goto err_free_channel_map;
1504         }
1505         iwlcore_init_hw_rates(priv, priv->ieee_rates);
1506
1507         return 0;
1508
1509 err_free_channel_map:
1510         iwl_free_channel_map(priv);
1511 err:
1512         return ret;
1513 }
1514 EXPORT_SYMBOL(iwl_init_drv);
1515
1516 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1517 {
1518         int ret = 0;
1519         s8 prev_tx_power = priv->tx_power_user_lmt;
1520
1521         if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1522                 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1523                          tx_power,
1524                          IWL_TX_POWER_TARGET_POWER_MIN);
1525                 return -EINVAL;
1526         }
1527
1528         if (tx_power > priv->tx_power_device_lmt) {
1529                 IWL_WARN(priv,
1530                         "Requested user TXPOWER %d above upper limit %d.\n",
1531                          tx_power, priv->tx_power_device_lmt);
1532                 return -EINVAL;
1533         }
1534
1535         if (priv->tx_power_user_lmt != tx_power)
1536                 force = true;
1537
1538         /* if nic is not up don't send command */
1539         if (iwl_is_ready_rf(priv)) {
1540                 priv->tx_power_user_lmt = tx_power;
1541                 if (force && priv->cfg->ops->lib->send_tx_power)
1542                         ret = priv->cfg->ops->lib->send_tx_power(priv);
1543                 else if (!priv->cfg->ops->lib->send_tx_power)
1544                         ret = -EOPNOTSUPP;
1545                 /*
1546                  * if fail to set tx_power, restore the orig. tx power
1547                  */
1548                 if (ret)
1549                         priv->tx_power_user_lmt = prev_tx_power;
1550         }
1551
1552         /*
1553          * Even this is an async host command, the command
1554          * will always report success from uCode
1555          * So once driver can placing the command into the queue
1556          * successfully, driver can use priv->tx_power_user_lmt
1557          * to reflect the current tx power
1558          */
1559         return ret;
1560 }
1561 EXPORT_SYMBOL(iwl_set_tx_power);
1562
1563 void iwl_uninit_drv(struct iwl_priv *priv)
1564 {
1565         iwl_calib_free_results(priv);
1566         iwlcore_free_geos(priv);
1567         iwl_free_channel_map(priv);
1568         kfree(priv->scan);
1569 }
1570 EXPORT_SYMBOL(iwl_uninit_drv);
1571
1572 #define ICT_COUNT (PAGE_SIZE/sizeof(u32))
1573
1574 /* Free dram table */
1575 void iwl_free_isr_ict(struct iwl_priv *priv)
1576 {
1577         if (priv->ict_tbl_vir) {
1578                 pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
1579                                         PAGE_SIZE, priv->ict_tbl_vir,
1580                                         priv->ict_tbl_dma);
1581                 priv->ict_tbl_vir = NULL;
1582         }
1583 }
1584 EXPORT_SYMBOL(iwl_free_isr_ict);
1585
1586
1587 /* allocate dram shared table it is a PAGE_SIZE aligned
1588  * also reset all data related to ICT table interrupt.
1589  */
1590 int iwl_alloc_isr_ict(struct iwl_priv *priv)
1591 {
1592
1593         if (priv->cfg->use_isr_legacy)
1594                 return 0;
1595         /* allocate shrared data table */
1596         priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
1597                                                   ICT_COUNT) + PAGE_SIZE,
1598                                                   &priv->ict_tbl_dma);
1599         if (!priv->ict_tbl_vir)
1600                 return -ENOMEM;
1601
1602         /* align table to PAGE_SIZE boundry */
1603         priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
1604
1605         IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
1606                              (unsigned long long)priv->ict_tbl_dma,
1607                              (unsigned long long)priv->aligned_ict_tbl_dma,
1608                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1609
1610         priv->ict_tbl =  priv->ict_tbl_vir +
1611                           (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
1612
1613         IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
1614                              priv->ict_tbl, priv->ict_tbl_vir,
1615                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1616
1617         /* reset table and index to all 0 */
1618         memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
1619         priv->ict_index = 0;
1620
1621         /* add periodic RX interrupt */
1622         priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
1623         return 0;
1624 }
1625 EXPORT_SYMBOL(iwl_alloc_isr_ict);
1626
1627 /* Device is going up inform it about using ICT interrupt table,
1628  * also we need to tell the driver to start using ICT interrupt.
1629  */
1630 int iwl_reset_ict(struct iwl_priv *priv)
1631 {
1632         u32 val;
1633         unsigned long flags;
1634
1635         if (!priv->ict_tbl_vir)
1636                 return 0;
1637
1638         spin_lock_irqsave(&priv->lock, flags);
1639         iwl_disable_interrupts(priv);
1640
1641         memset(&priv->ict_tbl[0], 0, sizeof(u32) * ICT_COUNT);
1642
1643         val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
1644
1645         val |= CSR_DRAM_INT_TBL_ENABLE;
1646         val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
1647
1648         IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
1649                         "aligned dma address %Lx\n",
1650                         val, (unsigned long long)priv->aligned_ict_tbl_dma);
1651
1652         iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
1653         priv->use_ict = true;
1654         priv->ict_index = 0;
1655         iwl_write32(priv, CSR_INT, priv->inta_mask);
1656         iwl_enable_interrupts(priv);
1657         spin_unlock_irqrestore(&priv->lock, flags);
1658
1659         return 0;
1660 }
1661 EXPORT_SYMBOL(iwl_reset_ict);
1662
1663 /* Device is going down disable ict interrupt usage */
1664 void iwl_disable_ict(struct iwl_priv *priv)
1665 {
1666         unsigned long flags;
1667
1668         spin_lock_irqsave(&priv->lock, flags);
1669         priv->use_ict = false;
1670         spin_unlock_irqrestore(&priv->lock, flags);
1671 }
1672 EXPORT_SYMBOL(iwl_disable_ict);
1673
1674 /* interrupt handler using ict table, with this interrupt driver will
1675  * stop using INTA register to get device's interrupt, reading this register
1676  * is expensive, device will write interrupts in ICT dram table, increment
1677  * index then will fire interrupt to driver, driver will OR all ICT table
1678  * entries from current index up to table entry with 0 value. the result is
1679  * the interrupt we need to service, driver will set the entries back to 0 and
1680  * set index.
1681  */
1682 irqreturn_t iwl_isr_ict(int irq, void *data)
1683 {
1684         struct iwl_priv *priv = data;
1685         u32 inta, inta_mask;
1686         u32 val = 0;
1687
1688         if (!priv)
1689                 return IRQ_NONE;
1690
1691         /* dram interrupt table not set yet,
1692          * use legacy interrupt.
1693          */
1694         if (!priv->use_ict)
1695                 return iwl_isr(irq, data);
1696
1697         spin_lock(&priv->lock);
1698
1699         /* Disable (but don't clear!) interrupts here to avoid
1700          * back-to-back ISRs and sporadic interrupts from our NIC.
1701          * If we have something to service, the tasklet will re-enable ints.
1702          * If we *don't* have something, we'll re-enable before leaving here.
1703          */
1704         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1705         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1706
1707
1708         /* Ignore interrupt if there's nothing in NIC to service.
1709          * This may be due to IRQ shared with another device,
1710          * or due to sporadic interrupts thrown from our NIC. */
1711         if (!priv->ict_tbl[priv->ict_index]) {
1712                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1713                 goto none;
1714         }
1715
1716         /* read all entries that not 0 start with ict_index */
1717         while (priv->ict_tbl[priv->ict_index]) {
1718
1719                 val |= le32_to_cpu(priv->ict_tbl[priv->ict_index]);
1720                 IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1721                                 priv->ict_index,
1722                                 le32_to_cpu(priv->ict_tbl[priv->ict_index]));
1723                 priv->ict_tbl[priv->ict_index] = 0;
1724                 priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1725                                                      ICT_COUNT);
1726
1727         }
1728
1729         /* We should not get this value, just ignore it. */
1730         if (val == 0xffffffff)
1731                 val = 0;
1732
1733         inta = (0xff & val) | ((0xff00 & val) << 16);
1734         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
1735                         inta, inta_mask, val);
1736
1737         inta &= priv->inta_mask;
1738         priv->inta |= inta;
1739
1740         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1741         if (likely(inta))
1742                 tasklet_schedule(&priv->irq_tasklet);
1743         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
1744                 /* Allow interrupt if was disabled by this handler and
1745                  * no tasklet was schedules, We should not enable interrupt,
1746                  * tasklet will enable it.
1747                  */
1748                 iwl_enable_interrupts(priv);
1749         }
1750
1751         spin_unlock(&priv->lock);
1752         return IRQ_HANDLED;
1753
1754  none:
1755         /* re-enable interrupts here since we don't have anything to service.
1756          * only Re-enable if disabled by irq.
1757          */
1758         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1759                 iwl_enable_interrupts(priv);
1760
1761         spin_unlock(&priv->lock);
1762         return IRQ_NONE;
1763 }
1764 EXPORT_SYMBOL(iwl_isr_ict);
1765
1766
1767 static irqreturn_t iwl_isr(int irq, void *data)
1768 {
1769         struct iwl_priv *priv = data;
1770         u32 inta, inta_mask;
1771 #ifdef CONFIG_IWLWIFI_DEBUG
1772         u32 inta_fh;
1773 #endif
1774         if (!priv)
1775                 return IRQ_NONE;
1776
1777         spin_lock(&priv->lock);
1778
1779         /* Disable (but don't clear!) interrupts here to avoid
1780          *    back-to-back ISRs and sporadic interrupts from our NIC.
1781          * If we have something to service, the tasklet will re-enable ints.
1782          * If we *don't* have something, we'll re-enable before leaving here. */
1783         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1784         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1785
1786         /* Discover which interrupts are active/pending */
1787         inta = iwl_read32(priv, CSR_INT);
1788
1789         /* Ignore interrupt if there's nothing in NIC to service.
1790          * This may be due to IRQ shared with another device,
1791          * or due to sporadic interrupts thrown from our NIC. */
1792         if (!inta) {
1793                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1794                 goto none;
1795         }
1796
1797         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1798                 /* Hardware disappeared. It might have already raised
1799                  * an interrupt */
1800                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1801                 goto unplugged;
1802         }
1803
1804 #ifdef CONFIG_IWLWIFI_DEBUG
1805         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1806                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1807                 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
1808                               "fh 0x%08x\n", inta, inta_mask, inta_fh);
1809         }
1810 #endif
1811
1812         priv->inta |= inta;
1813         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1814         if (likely(inta))
1815                 tasklet_schedule(&priv->irq_tasklet);
1816         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1817                 iwl_enable_interrupts(priv);
1818
1819  unplugged:
1820         spin_unlock(&priv->lock);
1821         return IRQ_HANDLED;
1822
1823  none:
1824         /* re-enable interrupts here since we don't have anything to service. */
1825         /* only Re-enable if diabled by irq  and no schedules tasklet. */
1826         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1827                 iwl_enable_interrupts(priv);
1828
1829         spin_unlock(&priv->lock);
1830         return IRQ_NONE;
1831 }
1832
1833 irqreturn_t iwl_isr_legacy(int irq, void *data)
1834 {
1835         struct iwl_priv *priv = data;
1836         u32 inta, inta_mask;
1837         u32 inta_fh;
1838         if (!priv)
1839                 return IRQ_NONE;
1840
1841         spin_lock(&priv->lock);
1842
1843         /* Disable (but don't clear!) interrupts here to avoid
1844          *    back-to-back ISRs and sporadic interrupts from our NIC.
1845          * If we have something to service, the tasklet will re-enable ints.
1846          * If we *don't* have something, we'll re-enable before leaving here. */
1847         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1848         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1849
1850         /* Discover which interrupts are active/pending */
1851         inta = iwl_read32(priv, CSR_INT);
1852         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1853
1854         /* Ignore interrupt if there's nothing in NIC to service.
1855          * This may be due to IRQ shared with another device,
1856          * or due to sporadic interrupts thrown from our NIC. */
1857         if (!inta && !inta_fh) {
1858                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1859                 goto none;
1860         }
1861
1862         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1863                 /* Hardware disappeared. It might have already raised
1864                  * an interrupt */
1865                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1866                 goto unplugged;
1867         }
1868
1869         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1870                       inta, inta_mask, inta_fh);
1871
1872         inta &= ~CSR_INT_BIT_SCD;
1873
1874         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1875         if (likely(inta || inta_fh))
1876                 tasklet_schedule(&priv->irq_tasklet);
1877
1878  unplugged:
1879         spin_unlock(&priv->lock);
1880         return IRQ_HANDLED;
1881
1882  none:
1883         /* re-enable interrupts here since we don't have anything to service. */
1884         /* only Re-enable if diabled by irq */
1885         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1886                 iwl_enable_interrupts(priv);
1887         spin_unlock(&priv->lock);
1888         return IRQ_NONE;
1889 }
1890 EXPORT_SYMBOL(iwl_isr_legacy);
1891
1892 int iwl_send_bt_config(struct iwl_priv *priv)
1893 {
1894         struct iwl_bt_cmd bt_cmd = {
1895                 .flags = 3,
1896                 .lead_time = 0xAA,
1897                 .max_kill = 1,
1898                 .kill_ack_mask = 0,
1899                 .kill_cts_mask = 0,
1900         };
1901
1902         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1903                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
1904 }
1905 EXPORT_SYMBOL(iwl_send_bt_config);
1906
1907 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
1908 {
1909         u32 stat_flags = 0;
1910         struct iwl_host_cmd cmd = {
1911                 .id = REPLY_STATISTICS_CMD,
1912                 .flags = flags,
1913                 .len = sizeof(stat_flags),
1914                 .data = (u8 *) &stat_flags,
1915         };
1916         return iwl_send_cmd(priv, &cmd);
1917 }
1918 EXPORT_SYMBOL(iwl_send_statistics_request);
1919
1920 /**
1921  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
1922  *   using sample data 100 bytes apart.  If these sample points are good,
1923  *   it's a pretty good bet that everything between them is good, too.
1924  */
1925 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1926 {
1927         u32 val;
1928         int ret = 0;
1929         u32 errcnt = 0;
1930         u32 i;
1931
1932         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1933
1934         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1935                 /* read data comes through single port, auto-incr addr */
1936                 /* NOTE: Use the debugless read so we don't flood kernel log
1937                  * if IWL_DL_IO is set */
1938                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1939                         i + IWL49_RTC_INST_LOWER_BOUND);
1940                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1941                 if (val != le32_to_cpu(*image)) {
1942                         ret = -EIO;
1943                         errcnt++;
1944                         if (errcnt >= 3)
1945                                 break;
1946                 }
1947         }
1948
1949         return ret;
1950 }
1951
1952 /**
1953  * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1954  *     looking at all data.
1955  */
1956 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1957                                  u32 len)
1958 {
1959         u32 val;
1960         u32 save_len = len;
1961         int ret = 0;
1962         u32 errcnt;
1963
1964         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1965
1966         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1967                            IWL49_RTC_INST_LOWER_BOUND);
1968
1969         errcnt = 0;
1970         for (; len > 0; len -= sizeof(u32), image++) {
1971                 /* read data comes through single port, auto-incr addr */
1972                 /* NOTE: Use the debugless read so we don't flood kernel log
1973                  * if IWL_DL_IO is set */
1974                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1975                 if (val != le32_to_cpu(*image)) {
1976                         IWL_ERR(priv, "uCode INST section is invalid at "
1977                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
1978                                   save_len - len, val, le32_to_cpu(*image));
1979                         ret = -EIO;
1980                         errcnt++;
1981                         if (errcnt >= 20)
1982                                 break;
1983                 }
1984         }
1985
1986         if (!errcnt)
1987                 IWL_DEBUG_INFO(priv,
1988                     "ucode image in INSTRUCTION memory is good\n");
1989
1990         return ret;
1991 }
1992
1993 /**
1994  * iwl_verify_ucode - determine which instruction image is in SRAM,
1995  *    and verify its contents
1996  */
1997 int iwl_verify_ucode(struct iwl_priv *priv)
1998 {
1999         __le32 *image;
2000         u32 len;
2001         int ret;
2002
2003         /* Try bootstrap */
2004         image = (__le32 *)priv->ucode_boot.v_addr;
2005         len = priv->ucode_boot.len;
2006         ret = iwlcore_verify_inst_sparse(priv, image, len);
2007         if (!ret) {
2008                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2009                 return 0;
2010         }
2011
2012         /* Try initialize */
2013         image = (__le32 *)priv->ucode_init.v_addr;
2014         len = priv->ucode_init.len;
2015         ret = iwlcore_verify_inst_sparse(priv, image, len);
2016         if (!ret) {
2017                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2018                 return 0;
2019         }
2020
2021         /* Try runtime/protocol */
2022         image = (__le32 *)priv->ucode_code.v_addr;
2023         len = priv->ucode_code.len;
2024         ret = iwlcore_verify_inst_sparse(priv, image, len);
2025         if (!ret) {
2026                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2027                 return 0;
2028         }
2029
2030         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2031
2032         /* Since nothing seems to match, show first several data entries in
2033          * instruction SRAM, so maybe visual inspection will give a clue.
2034          * Selection of bootstrap image (vs. other images) is arbitrary. */
2035         image = (__le32 *)priv->ucode_boot.v_addr;
2036         len = priv->ucode_boot.len;
2037         ret = iwl_verify_inst_full(priv, image, len);
2038
2039         return ret;
2040 }
2041 EXPORT_SYMBOL(iwl_verify_ucode);
2042
2043
2044 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2045 {
2046         struct iwl_ct_kill_config cmd;
2047         struct iwl_ct_kill_throttling_config adv_cmd;
2048         unsigned long flags;
2049         int ret = 0;
2050
2051         spin_lock_irqsave(&priv->lock, flags);
2052         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2053                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2054         spin_unlock_irqrestore(&priv->lock, flags);
2055         priv->thermal_throttle.ct_kill_toggle = false;
2056
2057         switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
2058         case CSR_HW_REV_TYPE_1000:
2059         case CSR_HW_REV_TYPE_6x00:
2060         case CSR_HW_REV_TYPE_6x50:
2061                 adv_cmd.critical_temperature_enter =
2062                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2063                 adv_cmd.critical_temperature_exit =
2064                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2065
2066                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2067                                        sizeof(adv_cmd), &adv_cmd);
2068                 if (ret)
2069                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2070                 else
2071                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2072                                         "succeeded, "
2073                                         "critical temperature enter is %d,"
2074                                         "exit is %d\n",
2075                                        priv->hw_params.ct_kill_threshold,
2076                                        priv->hw_params.ct_kill_exit_threshold);
2077                 break;
2078         default:
2079                 cmd.critical_temperature_R =
2080                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2081
2082                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2083                                        sizeof(cmd), &cmd);
2084                 if (ret)
2085                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2086                 else
2087                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2088                                         "succeeded, "
2089                                         "critical temperature is %d\n",
2090                                         priv->hw_params.ct_kill_threshold);
2091                 break;
2092         }
2093 }
2094 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2095
2096
2097 /*
2098  * CARD_STATE_CMD
2099  *
2100  * Use: Sets the device's internal card state to enable, disable, or halt
2101  *
2102  * When in the 'enable' state the card operates as normal.
2103  * When in the 'disable' state, the card enters into a low power mode.
2104  * When in the 'halt' state, the card is shut down and must be fully
2105  * restarted to come back on.
2106  */
2107 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2108 {
2109         struct iwl_host_cmd cmd = {
2110                 .id = REPLY_CARD_STATE_CMD,
2111                 .len = sizeof(u32),
2112                 .data = &flags,
2113                 .flags = meta_flag,
2114         };
2115
2116         return iwl_send_cmd(priv, &cmd);
2117 }
2118
2119 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2120                            struct iwl_rx_mem_buffer *rxb)
2121 {
2122 #ifdef CONFIG_IWLWIFI_DEBUG
2123         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2124         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2125         IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2126                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2127 #endif
2128 }
2129 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2130
2131 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2132                                       struct iwl_rx_mem_buffer *rxb)
2133 {
2134         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2135         u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
2136         IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2137                         "notification for %s:\n", len,
2138                         get_cmd_string(pkt->hdr.cmd));
2139         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
2140 }
2141 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2142
2143 void iwl_rx_reply_error(struct iwl_priv *priv,
2144                         struct iwl_rx_mem_buffer *rxb)
2145 {
2146         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2147
2148         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2149                 "seq 0x%04X ser 0x%08X\n",
2150                 le32_to_cpu(pkt->u.err_resp.error_type),
2151                 get_cmd_string(pkt->u.err_resp.cmd_id),
2152                 pkt->u.err_resp.cmd_id,
2153                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2154                 le32_to_cpu(pkt->u.err_resp.error_info));
2155 }
2156 EXPORT_SYMBOL(iwl_rx_reply_error);
2157
2158 void iwl_clear_isr_stats(struct iwl_priv *priv)
2159 {
2160         memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2161 }
2162
2163 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2164                            const struct ieee80211_tx_queue_params *params)
2165 {
2166         struct iwl_priv *priv = hw->priv;
2167         unsigned long flags;
2168         int q;
2169
2170         IWL_DEBUG_MAC80211(priv, "enter\n");
2171
2172         if (!iwl_is_ready_rf(priv)) {
2173                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2174                 return -EIO;
2175         }
2176
2177         if (queue >= AC_NUM) {
2178                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2179                 return 0;
2180         }
2181
2182         q = AC_NUM - 1 - queue;
2183
2184         spin_lock_irqsave(&priv->lock, flags);
2185
2186         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2187         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2188         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2189         priv->qos_data.def_qos_parm.ac[q].edca_txop =
2190                         cpu_to_le16((params->txop * 32));
2191
2192         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2193         priv->qos_data.qos_active = 1;
2194
2195         if (priv->iw_mode == NL80211_IFTYPE_AP)
2196                 iwl_activate_qos(priv, 1);
2197         else if (priv->assoc_id && iwl_is_associated(priv))
2198                 iwl_activate_qos(priv, 0);
2199
2200         spin_unlock_irqrestore(&priv->lock, flags);
2201
2202         IWL_DEBUG_MAC80211(priv, "leave\n");
2203         return 0;
2204 }
2205 EXPORT_SYMBOL(iwl_mac_conf_tx);
2206
2207 static void iwl_ht_conf(struct iwl_priv *priv,
2208                         struct ieee80211_bss_conf *bss_conf)
2209 {
2210         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2211         struct ieee80211_sta *sta;
2212
2213         IWL_DEBUG_MAC80211(priv, "enter: \n");
2214
2215         if (!ht_conf->is_ht)
2216                 return;
2217
2218         ht_conf->ht_protection =
2219                 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2220         ht_conf->non_GF_STA_present =
2221                 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2222
2223         ht_conf->single_chain_sufficient = false;
2224
2225         switch (priv->iw_mode) {
2226         case NL80211_IFTYPE_STATION:
2227                 rcu_read_lock();
2228                 sta = ieee80211_find_sta(priv->hw, priv->bssid);
2229                 if (sta) {
2230                         struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
2231                         int maxstreams;
2232
2233                         maxstreams = (ht_cap->mcs.tx_params &
2234                                       IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
2235                                         >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2236                         maxstreams += 1;
2237
2238                         if ((ht_cap->mcs.rx_mask[1] == 0) &&
2239                             (ht_cap->mcs.rx_mask[2] == 0))
2240                                 ht_conf->single_chain_sufficient = true;
2241                         if (maxstreams <= 1)
2242                                 ht_conf->single_chain_sufficient = true;
2243                 } else {
2244                         /*
2245                          * If at all, this can only happen through a race
2246                          * when the AP disconnects us while we're still
2247                          * setting up the connection, in that case mac80211
2248                          * will soon tell us about that.
2249                          */
2250                         ht_conf->single_chain_sufficient = true;
2251                 }
2252                 rcu_read_unlock();
2253                 break;
2254         case NL80211_IFTYPE_ADHOC:
2255                 ht_conf->single_chain_sufficient = true;
2256                 break;
2257         default:
2258                 break;
2259         }
2260
2261         IWL_DEBUG_MAC80211(priv, "leave\n");
2262 }
2263
2264 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2265 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2266                           struct ieee80211_vif *vif,
2267                           struct ieee80211_bss_conf *bss_conf,
2268                           u32 changes)
2269 {
2270         struct iwl_priv *priv = hw->priv;
2271         int ret;
2272
2273         IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2274
2275         if (!iwl_is_alive(priv))
2276                 return;
2277
2278         mutex_lock(&priv->mutex);
2279
2280         if (changes & BSS_CHANGED_BEACON &&
2281             priv->iw_mode == NL80211_IFTYPE_AP) {
2282                 dev_kfree_skb(priv->ibss_beacon);
2283                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2284         }
2285
2286         if (changes & BSS_CHANGED_BEACON_INT) {
2287                 priv->beacon_int = bss_conf->beacon_int;
2288                 /* TODO: in AP mode, do something to make this take effect */
2289         }
2290
2291         if (changes & BSS_CHANGED_BSSID) {
2292                 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2293
2294                 /*
2295                  * If there is currently a HW scan going on in the
2296                  * background then we need to cancel it else the RXON
2297                  * below/in post_associate will fail.
2298                  */
2299                 if (iwl_scan_cancel_timeout(priv, 100)) {
2300                         IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2301                         IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2302                         mutex_unlock(&priv->mutex);
2303                         return;
2304                 }
2305
2306                 /* mac80211 only sets assoc when in STATION mode */
2307                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2308                     bss_conf->assoc) {
2309                         memcpy(priv->staging_rxon.bssid_addr,
2310                                bss_conf->bssid, ETH_ALEN);
2311
2312                         /* currently needed in a few places */
2313                         memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2314                 } else {
2315                         priv->staging_rxon.filter_flags &=
2316                                 ~RXON_FILTER_ASSOC_MSK;
2317                 }
2318
2319         }
2320
2321         /*
2322          * This needs to be after setting the BSSID in case
2323          * mac80211 decides to do both changes at once because
2324          * it will invoke post_associate.
2325          */
2326         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2327             changes & BSS_CHANGED_BEACON) {
2328                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2329
2330                 if (beacon)
2331                         iwl_mac_beacon_update(hw, beacon);
2332         }
2333
2334         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2335                 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2336                                    bss_conf->use_short_preamble);
2337                 if (bss_conf->use_short_preamble)
2338                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2339                 else
2340                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2341         }
2342
2343         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2344                 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2345                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2346                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2347                 else
2348                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2349         }
2350
2351         if (changes & BSS_CHANGED_BASIC_RATES) {
2352                 /* XXX use this information
2353                  *
2354                  * To do that, remove code from iwl_set_rate() and put something
2355                  * like this here:
2356                  *
2357                 if (A-band)
2358                         priv->staging_rxon.ofdm_basic_rates =
2359                                 bss_conf->basic_rates;
2360                 else
2361                         priv->staging_rxon.ofdm_basic_rates =
2362                                 bss_conf->basic_rates >> 4;
2363                         priv->staging_rxon.cck_basic_rates =
2364                                 bss_conf->basic_rates & 0xF;
2365                  */
2366         }
2367
2368         if (changes & BSS_CHANGED_HT) {
2369                 iwl_ht_conf(priv, bss_conf);
2370
2371                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2372                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2373         }
2374
2375         if (changes & BSS_CHANGED_ASSOC) {
2376                 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2377                 if (bss_conf->assoc) {
2378                         priv->assoc_id = bss_conf->aid;
2379                         priv->beacon_int = bss_conf->beacon_int;
2380                         priv->timestamp = bss_conf->timestamp;
2381                         priv->assoc_capability = bss_conf->assoc_capability;
2382
2383                         /*
2384                          * We have just associated, don't start scan too early
2385                          * leave time for EAPOL exchange to complete.
2386                          *
2387                          * XXX: do this in mac80211
2388                          */
2389                         priv->next_scan_jiffies = jiffies +
2390                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2391                         if (!iwl_is_rfkill(priv))
2392                                 priv->cfg->ops->lib->post_associate(priv);
2393                 } else
2394                         priv->assoc_id = 0;
2395
2396         }
2397
2398         if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2399                 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2400                                    changes);
2401                 ret = iwl_send_rxon_assoc(priv);
2402                 if (!ret) {
2403                         /* Sync active_rxon with latest change. */
2404                         memcpy((void *)&priv->active_rxon,
2405                                 &priv->staging_rxon,
2406                                 sizeof(struct iwl_rxon_cmd));
2407                 }
2408         }
2409
2410         mutex_unlock(&priv->mutex);
2411
2412         IWL_DEBUG_MAC80211(priv, "leave\n");
2413 }
2414 EXPORT_SYMBOL(iwl_bss_info_changed);
2415
2416 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2417 {
2418         struct iwl_priv *priv = hw->priv;
2419         unsigned long flags;
2420         __le64 timestamp;
2421
2422         IWL_DEBUG_MAC80211(priv, "enter\n");
2423
2424         if (!iwl_is_ready_rf(priv)) {
2425                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2426                 return -EIO;
2427         }
2428
2429         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2430                 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2431                 return -EIO;
2432         }
2433
2434         spin_lock_irqsave(&priv->lock, flags);
2435
2436         if (priv->ibss_beacon)
2437                 dev_kfree_skb(priv->ibss_beacon);
2438
2439         priv->ibss_beacon = skb;
2440
2441         priv->assoc_id = 0;
2442         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2443         priv->timestamp = le64_to_cpu(timestamp);
2444
2445         IWL_DEBUG_MAC80211(priv, "leave\n");
2446         spin_unlock_irqrestore(&priv->lock, flags);
2447
2448         iwl_reset_qos(priv);
2449
2450         priv->cfg->ops->lib->post_associate(priv);
2451
2452
2453         return 0;
2454 }
2455 EXPORT_SYMBOL(iwl_mac_beacon_update);
2456
2457 int iwl_set_mode(struct iwl_priv *priv, int mode)
2458 {
2459         if (mode == NL80211_IFTYPE_ADHOC) {
2460                 const struct iwl_channel_info *ch_info;
2461
2462                 ch_info = iwl_get_channel_info(priv,
2463                         priv->band,
2464                         le16_to_cpu(priv->staging_rxon.channel));
2465
2466                 if (!ch_info || !is_channel_ibss(ch_info)) {
2467                         IWL_ERR(priv, "channel %d not IBSS channel\n",
2468                                   le16_to_cpu(priv->staging_rxon.channel));
2469                         return -EINVAL;
2470                 }
2471         }
2472
2473         iwl_connection_init_rx_config(priv, mode);
2474
2475         if (priv->cfg->ops->hcmd->set_rxon_chain)
2476                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2477
2478         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2479
2480         iwl_clear_stations_table(priv);
2481
2482         /* dont commit rxon if rf-kill is on*/
2483         if (!iwl_is_ready_rf(priv))
2484                 return -EAGAIN;
2485
2486         iwlcore_commit_rxon(priv);
2487
2488         return 0;
2489 }
2490 EXPORT_SYMBOL(iwl_set_mode);
2491
2492 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2493                                  struct ieee80211_if_init_conf *conf)
2494 {
2495         struct iwl_priv *priv = hw->priv;
2496         unsigned long flags;
2497
2498         IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2499
2500         if (priv->vif) {
2501                 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2502                 return -EOPNOTSUPP;
2503         }
2504
2505         spin_lock_irqsave(&priv->lock, flags);
2506         priv->vif = conf->vif;
2507         priv->iw_mode = conf->type;
2508
2509         spin_unlock_irqrestore(&priv->lock, flags);
2510
2511         mutex_lock(&priv->mutex);
2512
2513         if (conf->mac_addr) {
2514                 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2515                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2516         }
2517
2518         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2519                 /* we are not ready, will run again when ready */
2520                 set_bit(STATUS_MODE_PENDING, &priv->status);
2521
2522         mutex_unlock(&priv->mutex);
2523
2524         IWL_DEBUG_MAC80211(priv, "leave\n");
2525         return 0;
2526 }
2527 EXPORT_SYMBOL(iwl_mac_add_interface);
2528
2529 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2530                                      struct ieee80211_if_init_conf *conf)
2531 {
2532         struct iwl_priv *priv = hw->priv;
2533
2534         IWL_DEBUG_MAC80211(priv, "enter\n");
2535
2536         mutex_lock(&priv->mutex);
2537
2538         if (iwl_is_ready_rf(priv)) {
2539                 iwl_scan_cancel_timeout(priv, 100);
2540                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2541                 iwlcore_commit_rxon(priv);
2542         }
2543         if (priv->vif == conf->vif) {
2544                 priv->vif = NULL;
2545                 memset(priv->bssid, 0, ETH_ALEN);
2546         }
2547         mutex_unlock(&priv->mutex);
2548
2549         IWL_DEBUG_MAC80211(priv, "leave\n");
2550
2551 }
2552 EXPORT_SYMBOL(iwl_mac_remove_interface);
2553
2554 /**
2555  * iwl_mac_config - mac80211 config callback
2556  *
2557  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2558  * be set inappropriately and the driver currently sets the hardware up to
2559  * use it whenever needed.
2560  */
2561 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2562 {
2563         struct iwl_priv *priv = hw->priv;
2564         const struct iwl_channel_info *ch_info;
2565         struct ieee80211_conf *conf = &hw->conf;
2566         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2567         unsigned long flags = 0;
2568         int ret = 0;
2569         u16 ch;
2570         int scan_active = 0;
2571
2572         mutex_lock(&priv->mutex);
2573
2574         IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2575                                         conf->channel->hw_value, changed);
2576
2577         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2578                         test_bit(STATUS_SCANNING, &priv->status))) {
2579                 scan_active = 1;
2580                 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2581         }
2582
2583
2584         /* during scanning mac80211 will delay channel setting until
2585          * scan finish with changed = 0
2586          */
2587         if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2588                 if (scan_active)
2589                         goto set_ch_out;
2590
2591                 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2592                 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2593                 if (!is_channel_valid(ch_info)) {
2594                         IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2595                         ret = -EINVAL;
2596                         goto set_ch_out;
2597                 }
2598
2599                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2600                         !is_channel_ibss(ch_info)) {
2601                         IWL_ERR(priv, "channel %d in band %d not "
2602                                 "IBSS channel\n",
2603                                 conf->channel->hw_value, conf->channel->band);
2604                         ret = -EINVAL;
2605                         goto set_ch_out;
2606                 }
2607
2608                 spin_lock_irqsave(&priv->lock, flags);
2609
2610                 /* Configure HT40 channels */
2611                 ht_conf->is_ht = conf_is_ht(conf);
2612                 if (ht_conf->is_ht) {
2613                         if (conf_is_ht40_minus(conf)) {
2614                                 ht_conf->extension_chan_offset =
2615                                         IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2616                                 ht_conf->is_40mhz = true;
2617                         } else if (conf_is_ht40_plus(conf)) {
2618                                 ht_conf->extension_chan_offset =
2619                                         IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2620                                 ht_conf->is_40mhz = true;
2621                         } else {
2622                                 ht_conf->extension_chan_offset =
2623                                         IEEE80211_HT_PARAM_CHA_SEC_NONE;
2624                                 ht_conf->is_40mhz = false;
2625                         }
2626                 } else
2627                         ht_conf->is_40mhz = false;
2628                 /* Default to no protection. Protection mode will later be set
2629                  * from BSS config in iwl_ht_conf */
2630                 ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2631
2632                 /* if we are switching from ht to 2.4 clear flags
2633                  * from any ht related info since 2.4 does not
2634                  * support ht */
2635                 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2636                         priv->staging_rxon.flags = 0;
2637
2638                 iwl_set_rxon_channel(priv, conf->channel);
2639
2640                 iwl_set_flags_for_band(priv, conf->channel->band);
2641                 spin_unlock_irqrestore(&priv->lock, flags);
2642  set_ch_out:
2643                 /* The list of supported rates and rate mask can be different
2644                  * for each band; since the band may have changed, reset
2645                  * the rate mask to what mac80211 lists */
2646                 iwl_set_rate(priv);
2647         }
2648
2649         if (changed & IEEE80211_CONF_CHANGE_PS) {
2650                 ret = iwl_power_update_mode(priv, false);
2651                 if (ret)
2652                         IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
2653         }
2654
2655         if (changed & IEEE80211_CONF_CHANGE_POWER) {
2656                 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2657                         priv->tx_power_user_lmt, conf->power_level);
2658
2659                 iwl_set_tx_power(priv, conf->power_level, false);
2660         }
2661
2662         /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2663         if (priv->cfg->ops->hcmd->set_rxon_chain)
2664                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2665
2666         if (!iwl_is_ready(priv)) {
2667                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2668                 goto out;
2669         }
2670
2671         if (scan_active)
2672                 goto out;
2673
2674         if (memcmp(&priv->active_rxon,
2675                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2676                 iwlcore_commit_rxon(priv);
2677         else
2678                 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2679
2680
2681 out:
2682         IWL_DEBUG_MAC80211(priv, "leave\n");
2683         mutex_unlock(&priv->mutex);
2684         return ret;
2685 }
2686 EXPORT_SYMBOL(iwl_mac_config);
2687
2688 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2689                          struct ieee80211_tx_queue_stats *stats)
2690 {
2691         struct iwl_priv *priv = hw->priv;
2692         int i, avail;
2693         struct iwl_tx_queue *txq;
2694         struct iwl_queue *q;
2695         unsigned long flags;
2696
2697         IWL_DEBUG_MAC80211(priv, "enter\n");
2698
2699         if (!iwl_is_ready_rf(priv)) {
2700                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2701                 return -EIO;
2702         }
2703
2704         spin_lock_irqsave(&priv->lock, flags);
2705
2706         for (i = 0; i < AC_NUM; i++) {
2707                 txq = &priv->txq[i];
2708                 q = &txq->q;
2709                 avail = iwl_queue_space(q);
2710
2711                 stats[i].len = q->n_window - avail;
2712                 stats[i].limit = q->n_window - q->high_mark;
2713                 stats[i].count = q->n_window;
2714
2715         }
2716         spin_unlock_irqrestore(&priv->lock, flags);
2717
2718         IWL_DEBUG_MAC80211(priv, "leave\n");
2719
2720         return 0;
2721 }
2722 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2723
2724 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2725 {
2726         struct iwl_priv *priv = hw->priv;
2727         unsigned long flags;
2728
2729         mutex_lock(&priv->mutex);
2730         IWL_DEBUG_MAC80211(priv, "enter\n");
2731
2732         spin_lock_irqsave(&priv->lock, flags);
2733         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
2734         spin_unlock_irqrestore(&priv->lock, flags);
2735
2736         iwl_reset_qos(priv);
2737
2738         spin_lock_irqsave(&priv->lock, flags);
2739         priv->assoc_id = 0;
2740         priv->assoc_capability = 0;
2741         priv->assoc_station_added = 0;
2742
2743         /* new association get rid of ibss beacon skb */
2744         if (priv->ibss_beacon)
2745                 dev_kfree_skb(priv->ibss_beacon);
2746
2747         priv->ibss_beacon = NULL;
2748
2749         priv->beacon_int = priv->vif->bss_conf.beacon_int;
2750         priv->timestamp = 0;
2751         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2752                 priv->beacon_int = 0;
2753
2754         spin_unlock_irqrestore(&priv->lock, flags);
2755
2756         if (!iwl_is_ready_rf(priv)) {
2757                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2758                 mutex_unlock(&priv->mutex);
2759                 return;
2760         }
2761
2762         /* we are restarting association process
2763          * clear RXON_FILTER_ASSOC_MSK bit
2764          */
2765         if (priv->iw_mode != NL80211_IFTYPE_AP) {
2766                 iwl_scan_cancel_timeout(priv, 100);
2767                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2768                 iwlcore_commit_rxon(priv);
2769         }
2770
2771         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2772                 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2773                 mutex_unlock(&priv->mutex);
2774                 return;
2775         }
2776
2777         iwl_set_rate(priv);
2778
2779         mutex_unlock(&priv->mutex);
2780
2781         IWL_DEBUG_MAC80211(priv, "leave\n");
2782 }
2783 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2784
2785 #ifdef CONFIG_IWLWIFI_DEBUGFS
2786
2787 #define IWL_TRAFFIC_DUMP_SIZE   (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2788
2789 void iwl_reset_traffic_log(struct iwl_priv *priv)
2790 {
2791         priv->tx_traffic_idx = 0;
2792         priv->rx_traffic_idx = 0;
2793         if (priv->tx_traffic)
2794                 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2795         if (priv->rx_traffic)
2796                 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2797 }
2798
2799 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2800 {
2801         u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2802
2803         if (iwl_debug_level & IWL_DL_TX) {
2804                 if (!priv->tx_traffic) {
2805                         priv->tx_traffic =
2806                                 kzalloc(traffic_size, GFP_KERNEL);
2807                         if (!priv->tx_traffic)
2808                                 return -ENOMEM;
2809                 }
2810         }
2811         if (iwl_debug_level & IWL_DL_RX) {
2812                 if (!priv->rx_traffic) {
2813                         priv->rx_traffic =
2814                                 kzalloc(traffic_size, GFP_KERNEL);
2815                         if (!priv->rx_traffic)
2816                                 return -ENOMEM;
2817                 }
2818         }
2819         iwl_reset_traffic_log(priv);
2820         return 0;
2821 }
2822 EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2823
2824 void iwl_free_traffic_mem(struct iwl_priv *priv)
2825 {
2826         kfree(priv->tx_traffic);
2827         priv->tx_traffic = NULL;
2828
2829         kfree(priv->rx_traffic);
2830         priv->rx_traffic = NULL;
2831 }
2832 EXPORT_SYMBOL(iwl_free_traffic_mem);
2833
2834 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
2835                       u16 length, struct ieee80211_hdr *header)
2836 {
2837         __le16 fc;
2838         u16 len;
2839
2840         if (likely(!(iwl_debug_level & IWL_DL_TX)))
2841                 return;
2842
2843         if (!priv->tx_traffic)
2844                 return;
2845
2846         fc = header->frame_control;
2847         if (ieee80211_is_data(fc)) {
2848                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2849                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
2850                 memcpy((priv->tx_traffic +
2851                        (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2852                        header, len);
2853                 priv->tx_traffic_idx =
2854                         (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2855         }
2856 }
2857 EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
2858
2859 void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
2860                       u16 length, struct ieee80211_hdr *header)
2861 {
2862         __le16 fc;
2863         u16 len;
2864
2865         if (likely(!(iwl_debug_level & IWL_DL_RX)))
2866                 return;
2867
2868         if (!priv->rx_traffic)
2869                 return;
2870
2871         fc = header->frame_control;
2872         if (ieee80211_is_data(fc)) {
2873                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2874                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
2875                 memcpy((priv->rx_traffic +
2876                        (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2877                        header, len);
2878                 priv->rx_traffic_idx =
2879                         (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2880         }
2881 }
2882 EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
2883
2884 const char *get_mgmt_string(int cmd)
2885 {
2886         switch (cmd) {
2887                 IWL_CMD(MANAGEMENT_ASSOC_REQ);
2888                 IWL_CMD(MANAGEMENT_ASSOC_RESP);
2889                 IWL_CMD(MANAGEMENT_REASSOC_REQ);
2890                 IWL_CMD(MANAGEMENT_REASSOC_RESP);
2891                 IWL_CMD(MANAGEMENT_PROBE_REQ);
2892                 IWL_CMD(MANAGEMENT_PROBE_RESP);
2893                 IWL_CMD(MANAGEMENT_BEACON);
2894                 IWL_CMD(MANAGEMENT_ATIM);
2895                 IWL_CMD(MANAGEMENT_DISASSOC);
2896                 IWL_CMD(MANAGEMENT_AUTH);
2897                 IWL_CMD(MANAGEMENT_DEAUTH);
2898                 IWL_CMD(MANAGEMENT_ACTION);
2899         default:
2900                 return "UNKNOWN";
2901
2902         }
2903 }
2904
2905 const char *get_ctrl_string(int cmd)
2906 {
2907         switch (cmd) {
2908                 IWL_CMD(CONTROL_BACK_REQ);
2909                 IWL_CMD(CONTROL_BACK);
2910                 IWL_CMD(CONTROL_PSPOLL);
2911                 IWL_CMD(CONTROL_RTS);
2912                 IWL_CMD(CONTROL_CTS);
2913                 IWL_CMD(CONTROL_ACK);
2914                 IWL_CMD(CONTROL_CFEND);
2915                 IWL_CMD(CONTROL_CFENDACK);
2916         default:
2917                 return "UNKNOWN";
2918
2919         }
2920 }
2921
2922 void iwl_clear_tx_stats(struct iwl_priv *priv)
2923 {
2924         memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
2925
2926 }
2927
2928 void iwl_clear_rx_stats(struct iwl_priv *priv)
2929 {
2930         memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
2931 }
2932
2933 /*
2934  * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
2935  * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
2936  * Use debugFs to display the rx/rx_statistics
2937  * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
2938  * information will be recorded, but DATA pkt still will be recorded
2939  * for the reason of iwl_led.c need to control the led blinking based on
2940  * number of tx and rx data.
2941  *
2942  */
2943 void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
2944 {
2945         struct traffic_stats    *stats;
2946
2947         if (is_tx)
2948                 stats = &priv->tx_stats;
2949         else
2950                 stats = &priv->rx_stats;
2951
2952         if (ieee80211_is_mgmt(fc)) {
2953                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2954                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
2955                         stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
2956                         break;
2957                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
2958                         stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
2959                         break;
2960                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
2961                         stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
2962                         break;
2963                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
2964                         stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
2965                         break;
2966                 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
2967                         stats->mgmt[MANAGEMENT_PROBE_REQ]++;
2968                         break;
2969                 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
2970                         stats->mgmt[MANAGEMENT_PROBE_RESP]++;
2971                         break;
2972                 case cpu_to_le16(IEEE80211_STYPE_BEACON):
2973                         stats->mgmt[MANAGEMENT_BEACON]++;
2974                         break;
2975                 case cpu_to_le16(IEEE80211_STYPE_ATIM):
2976                         stats->mgmt[MANAGEMENT_ATIM]++;
2977                         break;
2978                 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
2979                         stats->mgmt[MANAGEMENT_DISASSOC]++;
2980                         break;
2981                 case cpu_to_le16(IEEE80211_STYPE_AUTH):
2982                         stats->mgmt[MANAGEMENT_AUTH]++;
2983                         break;
2984                 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
2985                         stats->mgmt[MANAGEMENT_DEAUTH]++;
2986                         break;
2987                 case cpu_to_le16(IEEE80211_STYPE_ACTION):
2988                         stats->mgmt[MANAGEMENT_ACTION]++;
2989                         break;
2990                 }
2991         } else if (ieee80211_is_ctl(fc)) {
2992                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2993                 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
2994                         stats->ctrl[CONTROL_BACK_REQ]++;
2995                         break;
2996                 case cpu_to_le16(IEEE80211_STYPE_BACK):
2997                         stats->ctrl[CONTROL_BACK]++;
2998                         break;
2999                 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
3000                         stats->ctrl[CONTROL_PSPOLL]++;
3001                         break;
3002                 case cpu_to_le16(IEEE80211_STYPE_RTS):
3003                         stats->ctrl[CONTROL_RTS]++;
3004                         break;
3005                 case cpu_to_le16(IEEE80211_STYPE_CTS):
3006                         stats->ctrl[CONTROL_CTS]++;
3007                         break;
3008                 case cpu_to_le16(IEEE80211_STYPE_ACK):
3009                         stats->ctrl[CONTROL_ACK]++;
3010                         break;
3011                 case cpu_to_le16(IEEE80211_STYPE_CFEND):
3012                         stats->ctrl[CONTROL_CFEND]++;
3013                         break;
3014                 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
3015                         stats->ctrl[CONTROL_CFENDACK]++;
3016                         break;
3017                 }
3018         } else {
3019                 /* data */
3020                 stats->data_cnt++;
3021                 stats->data_bytes += len;
3022         }
3023 }
3024 EXPORT_SYMBOL(iwl_update_stats);
3025 #endif
3026
3027 #ifdef CONFIG_PM
3028
3029 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3030 {
3031         struct iwl_priv *priv = pci_get_drvdata(pdev);
3032
3033         /*
3034          * This function is called when system goes into suspend state
3035          * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
3036          * first but since iwl_mac_stop() has no knowledge of who the caller is,
3037          * it will not call apm_ops.stop() to stop the DMA operation.
3038          * Calling apm_ops.stop here to make sure we stop the DMA.
3039          */
3040         priv->cfg->ops->lib->apm_ops.stop(priv);
3041
3042         pci_save_state(pdev);
3043         pci_disable_device(pdev);
3044         pci_set_power_state(pdev, PCI_D3hot);
3045
3046         return 0;
3047 }
3048 EXPORT_SYMBOL(iwl_pci_suspend);
3049
3050 int iwl_pci_resume(struct pci_dev *pdev)
3051 {
3052         struct iwl_priv *priv = pci_get_drvdata(pdev);
3053         int ret;
3054
3055         pci_set_power_state(pdev, PCI_D0);
3056         ret = pci_enable_device(pdev);
3057         if (ret)
3058                 return ret;
3059         pci_restore_state(pdev);
3060         iwl_enable_interrupts(priv);
3061
3062         return 0;
3063 }
3064 EXPORT_SYMBOL(iwl_pci_resume);
3065
3066 #endif /* CONFIG_PM */