git.oblomov.eu Git - linux-2.6/blob - 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-rfkill.h"
  40 #include "iwl-power.h"
  41 #include "iwl-sta.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 /*
  63  * Parameter order:
  64  *   rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
  65  *
  66  * If there isn't a valid next or previous rate then INV is used which
  67  * maps to IWL_RATE_INVALID
  68  *
  69  */
  70 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
  71         IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2),    /*  1mbps */
  72         IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5),          /*  2mbps */
  73         IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
  74         IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18),      /* 11mbps */
  75         IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
  76         IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11),       /*  9mbps */
  77         IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
  78         IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
  79         IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
  80         IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
  81         IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
  82         IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
  83         IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
  84         /* FIXME:RS:          ^^    should be INV (legacy) */
  85 };
  86 EXPORT_SYMBOL(iwl_rates);
  87
  88 /**
  89  * translate ucode response to mac80211 tx status control values
  90  */
  91 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
  92                                   struct ieee80211_tx_info *info)
  93 {
  94         int rate_index;
  95         struct ieee80211_tx_rate *r = &info->control.rates[0];
  96
  97         info->antenna_sel_tx =
  98                 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
  99         if (rate_n_flags & RATE_MCS_HT_MSK)
 100                 r->flags |= IEEE80211_TX_RC_MCS;
 101         if (rate_n_flags & RATE_MCS_GF_MSK)
 102                 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
 103         if (rate_n_flags & RATE_MCS_FAT_MSK)
 104                 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
 105         if (rate_n_flags & RATE_MCS_DUP_MSK)
 106                 r->flags |= IEEE80211_TX_RC_DUP_DATA;
 107         if (rate_n_flags & RATE_MCS_SGI_MSK)
 108                 r->flags |= IEEE80211_TX_RC_SHORT_GI;
 109         rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
 110         if (info->band == IEEE80211_BAND_5GHZ)
 111                 rate_index -= IWL_FIRST_OFDM_RATE;
 112         r->idx = rate_index;
 113 }
 114 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
 115
 116 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
 117 {
 118         int idx = 0;
 119
 120         /* HT rate format */
 121         if (rate_n_flags & RATE_MCS_HT_MSK) {
 122                 idx = (rate_n_flags & 0xff);
 123
 124                 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
 125                         idx = idx - IWL_RATE_MIMO3_6M_PLCP;
 126                 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
 127                         idx = idx - IWL_RATE_MIMO2_6M_PLCP;
 128
 129                 idx += IWL_FIRST_OFDM_RATE;
 130                 /* skip 9M not supported in ht*/
 131                 if (idx >= IWL_RATE_9M_INDEX)
 132                         idx += 1;
 133                 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
 134                         return idx;
 135
 136         /* legacy rate format, search for match in table */
 137         } else {
 138                 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
 139                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 140                                 return idx;
 141         }
 142
 143         return -1;
 144 }
 145 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
 146
 147 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
 148 {
 149         int i;
 150         u8 ind = ant;
 151         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 152                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 153                 if (priv->hw_params.valid_tx_ant & BIT(ind))
 154                         return ind;
 155         }
 156         return ant;
 157 }
 158
 159 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 160 EXPORT_SYMBOL(iwl_bcast_addr);
 161
 162
 163 /* This function both allocates and initializes hw and priv. */
 164 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
 165                 struct ieee80211_ops *hw_ops)
 166 {
 167         struct iwl_priv *priv;
 168
 169         /* mac80211 allocates memory for this device instance, including
 170          *   space for this driver's private structure */
 171         struct ieee80211_hw *hw =
 172                 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
 173         if (hw == NULL) {
 174                 printk(KERN_ERR "%s: Can not allocate network device\n",
 175                        cfg->name);
 176                 goto out;
 177         }
 178
 179         priv = hw->priv;
 180         priv->hw = hw;
 181
 182 out:
 183         return hw;
 184 }
 185 EXPORT_SYMBOL(iwl_alloc_all);
 186
 187 void iwl_hw_detect(struct iwl_priv *priv)
 188 {
 189         priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
 190         priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
 191         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
 192 }
 193 EXPORT_SYMBOL(iwl_hw_detect);
 194
 195 int iwl_hw_nic_init(struct iwl_priv *priv)
 196 {
 197         unsigned long flags;
 198         struct iwl_rx_queue *rxq = &priv->rxq;
 199         int ret;
 200
 201         /* nic_init */
 202         spin_lock_irqsave(&priv->lock, flags);
 203         priv->cfg->ops->lib->apm_ops.init(priv);
 204         iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
 205         spin_unlock_irqrestore(&priv->lock, flags);
 206
 207         ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
 208
 209         priv->cfg->ops->lib->apm_ops.config(priv);
 210
 211         /* Allocate the RX queue, or reset if it is already allocated */
 212         if (!rxq->bd) {
 213                 ret = iwl_rx_queue_alloc(priv);
 214                 if (ret) {
 215                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
 216                         return -ENOMEM;
 217                 }
 218         } else
 219                 iwl_rx_queue_reset(priv, rxq);
 220
 221         iwl_rx_replenish(priv);
 222
 223         iwl_rx_init(priv, rxq);
 224
 225         spin_lock_irqsave(&priv->lock, flags);
 226
 227         rxq->need_update = 1;
 228         iwl_rx_queue_update_write_ptr(priv, rxq);
 229
 230         spin_unlock_irqrestore(&priv->lock, flags);
 231
 232         /* Allocate and init all Tx and Command queues */
 233         ret = iwl_txq_ctx_reset(priv);
 234         if (ret)
 235                 return ret;
 236
 237         set_bit(STATUS_INIT, &priv->status);
 238
 239         return 0;
 240 }
 241 EXPORT_SYMBOL(iwl_hw_nic_init);
 242
 243 /*
 244  * QoS  support
 245 */
 246 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 247 {
 248         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 249                 return;
 250
 251         priv->qos_data.def_qos_parm.qos_flags = 0;
 252
 253         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 254             !priv->qos_data.qos_cap.q_AP.txop_request)
 255                 priv->qos_data.def_qos_parm.qos_flags |=
 256                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 257         if (priv->qos_data.qos_active)
 258                 priv->qos_data.def_qos_parm.qos_flags |=
 259                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 260
 261         if (priv->current_ht_config.is_ht)
 262                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 263
 264         if (force || iwl_is_associated(priv)) {
 265                 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 266                                 priv->qos_data.qos_active,
 267                                 priv->qos_data.def_qos_parm.qos_flags);
 268
 269                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 270                                        sizeof(struct iwl_qosparam_cmd),
 271                                        &priv->qos_data.def_qos_parm, NULL);
 272         }
 273 }
 274 EXPORT_SYMBOL(iwl_activate_qos);
 275
 276 void iwl_reset_qos(struct iwl_priv *priv)
 277 {
 278         u16 cw_min = 15;
 279         u16 cw_max = 1023;
 280         u8 aifs = 2;
 281         bool is_legacy = false;
 282         unsigned long flags;
 283         int i;
 284
 285         spin_lock_irqsave(&priv->lock, flags);
 286         /* QoS always active in AP and ADHOC mode
 287          * In STA mode wait for association
 288          */
 289         if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
 290             priv->iw_mode == NL80211_IFTYPE_AP)
 291                 priv->qos_data.qos_active = 1;
 292         else
 293                 priv->qos_data.qos_active = 0;
 294
 295         /* check for legacy mode */
 296         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
 297             (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
 298             (priv->iw_mode == NL80211_IFTYPE_STATION &&
 299             (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
 300                 cw_min = 31;
 301                 is_legacy = 1;
 302         }
 303
 304         if (priv->qos_data.qos_active)
 305                 aifs = 3;
 306
 307         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
 308         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
 309         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
 310         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
 311         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
 312
 313         if (priv->qos_data.qos_active) {
 314                 i = 1;
 315                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
 316                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
 317                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
 318                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
 319                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 320
 321                 i = 2;
 322                 priv->qos_data.def_qos_parm.ac[i].cw_min =
 323                         cpu_to_le16((cw_min + 1) / 2 - 1);
 324                 priv->qos_data.def_qos_parm.ac[i].cw_max =
 325                         cpu_to_le16(cw_max);
 326                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
 327                 if (is_legacy)
 328                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 329                                 cpu_to_le16(6016);
 330                 else
 331                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 332                                 cpu_to_le16(3008);
 333                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 334
 335                 i = 3;
 336                 priv->qos_data.def_qos_parm.ac[i].cw_min =
 337                         cpu_to_le16((cw_min + 1) / 4 - 1);
 338                 priv->qos_data.def_qos_parm.ac[i].cw_max =
 339                         cpu_to_le16((cw_max + 1) / 2 - 1);
 340                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
 341                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 342                 if (is_legacy)
 343                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 344                                 cpu_to_le16(3264);
 345                 else
 346                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 347                                 cpu_to_le16(1504);
 348         } else {
 349                 for (i = 1; i < 4; i++) {
 350                         priv->qos_data.def_qos_parm.ac[i].cw_min =
 351                                 cpu_to_le16(cw_min);
 352                         priv->qos_data.def_qos_parm.ac[i].cw_max =
 353                                 cpu_to_le16(cw_max);
 354                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
 355                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
 356                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 357                 }
 358         }
 359         IWL_DEBUG_QOS(priv, "set QoS to default \n");
 360
 361         spin_unlock_irqrestore(&priv->lock, flags);
 362 }
 363 EXPORT_SYMBOL(iwl_reset_qos);
 364
 365 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
 366 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
 367 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
 368                               struct ieee80211_sta_ht_cap *ht_info,
 369                               enum ieee80211_band band)
 370 {
 371         u16 max_bit_rate = 0;
 372         u8 rx_chains_num = priv->hw_params.rx_chains_num;
 373         u8 tx_chains_num = priv->hw_params.tx_chains_num;
 374
 375         ht_info->cap = 0;
 376         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
 377
 378         ht_info->ht_supported = true;
 379
 380         ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
 381         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
 382         ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
 383                              (WLAN_HT_CAP_SM_PS_DISABLED << 2));
 384
 385         max_bit_rate = MAX_BIT_RATE_20_MHZ;
 386         if (priv->hw_params.fat_channel & BIT(band)) {
 387                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 388                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
 389                 ht_info->mcs.rx_mask[4] = 0x01;
 390                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
 391         }
 392
 393         if (priv->cfg->mod_params->amsdu_size_8K)
 394                 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
 395
 396         ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
 397         ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
 398
 399         ht_info->mcs.rx_mask[0] = 0xFF;
 400         if (rx_chains_num >= 2)
 401                 ht_info->mcs.rx_mask[1] = 0xFF;
 402         if (rx_chains_num >= 3)
 403                 ht_info->mcs.rx_mask[2] = 0xFF;
 404
 405         /* Highest supported Rx data rate */
 406         max_bit_rate *= rx_chains_num;
 407         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
 408         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
 409
 410         /* Tx MCS capabilities */
 411         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 412         if (tx_chains_num != rx_chains_num) {
 413                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
 414                 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
 415                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
 416         }
 417 }
 418
 419 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
 420                               struct ieee80211_rate *rates)
 421 {
 422         int i;
 423
 424         for (i = 0; i < IWL_RATE_COUNT; i++) {
 425                 rates[i].bitrate = iwl_rates[i].ieee * 5;
 426                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
 427                 rates[i].hw_value_short = i;
 428                 rates[i].flags = 0;
 429                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
 430                         /*
 431                          * If CCK != 1M then set short preamble rate flag.
 432                          */
 433                         rates[i].flags |=
 434                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
 435                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
 436                 }
 437         }
 438 }
 439
 440
 441 /**
 442  * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
 443  */
 444 int iwlcore_init_geos(struct iwl_priv *priv)
 445 {
 446         struct iwl_channel_info *ch;
 447         struct ieee80211_supported_band *sband;
 448         struct ieee80211_channel *channels;
 449         struct ieee80211_channel *geo_ch;
 450         struct ieee80211_rate *rates;
 451         int i = 0;
 452
 453         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
 454             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
 455                 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
 456                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
 457                 return 0;
 458         }
 459
 460         channels = kzalloc(sizeof(struct ieee80211_channel) *
 461                            priv->channel_count, GFP_KERNEL);
 462         if (!channels)
 463                 return -ENOMEM;
 464
 465         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
 466                         GFP_KERNEL);
 467         if (!rates) {
 468                 kfree(channels);
 469                 return -ENOMEM;
 470         }
 471
 472         /* 5.2GHz channels start after the 2.4GHz channels */
 473         sband = &priv->bands[IEEE80211_BAND_5GHZ];
 474         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
 475         /* just OFDM */
 476         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
 477         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
 478
 479         if (priv->cfg->sku & IWL_SKU_N)
 480                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
 481                                          IEEE80211_BAND_5GHZ);
 482
 483         sband = &priv->bands[IEEE80211_BAND_2GHZ];
 484         sband->channels = channels;
 485         /* OFDM & CCK */
 486         sband->bitrates = rates;
 487         sband->n_bitrates = IWL_RATE_COUNT;
 488
 489         if (priv->cfg->sku & IWL_SKU_N)
 490                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
 491                                          IEEE80211_BAND_2GHZ);
 492
 493         priv->ieee_channels = channels;
 494         priv->ieee_rates = rates;
 495
 496         for (i = 0;  i < priv->channel_count; i++) {
 497                 ch = &priv->channel_info[i];
 498
 499                 /* FIXME: might be removed if scan is OK */
 500                 if (!is_channel_valid(ch))
 501                         continue;
 502
 503                 if (is_channel_a_band(ch))
 504                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
 505                 else
 506                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
 507
 508                 geo_ch = &sband->channels[sband->n_channels++];
 509
 510                 geo_ch->center_freq =
 511                                 ieee80211_channel_to_frequency(ch->channel);
 512                 geo_ch->max_power = ch->max_power_avg;
 513                 geo_ch->max_antenna_gain = 0xff;
 514                 geo_ch->hw_value = ch->channel;
 515
 516                 if (is_channel_valid(ch)) {
 517                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
 518                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
 519
 520                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
 521                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
 522
 523                         if (ch->flags & EEPROM_CHANNEL_RADAR)
 524                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
 525
 526                         geo_ch->flags |= ch->fat_extension_channel;
 527
 528                         if (ch->max_power_avg > priv->tx_power_channel_lmt)
 529                                 priv->tx_power_channel_lmt = ch->max_power_avg;
 530                 } else {
 531                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
 532                 }
 533
 534                 /* Save flags for reg domain usage */
 535                 geo_ch->orig_flags = geo_ch->flags;
 536
 537                 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
 538                                 ch->channel, geo_ch->center_freq,
 539                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
 540                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
 541                                 "restricted" : "valid",
 542                                  geo_ch->flags);
 543         }
 544
 545         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
 546              priv->cfg->sku & IWL_SKU_A) {
 547                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
 548                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
 549                            priv->pci_dev->device,
 550                            priv->pci_dev->subsystem_device);
 551                 priv->cfg->sku &= ~IWL_SKU_A;
 552         }
 553
 554         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
 555                    priv->bands[IEEE80211_BAND_2GHZ].n_channels,
 556                    priv->bands[IEEE80211_BAND_5GHZ].n_channels);
 557
 558         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
 559
 560         return 0;
 561 }
 562 EXPORT_SYMBOL(iwlcore_init_geos);
 563
 564 /*
 565  * iwlcore_free_geos - undo allocations in iwlcore_init_geos
 566  */
 567 void iwlcore_free_geos(struct iwl_priv *priv)
 568 {
 569         kfree(priv->ieee_channels);
 570         kfree(priv->ieee_rates);
 571         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
 572 }
 573 EXPORT_SYMBOL(iwlcore_free_geos);
 574
 575 static bool is_single_rx_stream(struct iwl_priv *priv)
 576 {
 577         return !priv->current_ht_config.is_ht ||
 578                ((priv->current_ht_config.mcs.rx_mask[1] == 0) &&
 579                 (priv->current_ht_config.mcs.rx_mask[2] == 0));
 580 }
 581
 582 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
 583                                    enum ieee80211_band band,
 584                                    u16 channel, u8 extension_chan_offset)
 585 {
 586         const struct iwl_channel_info *ch_info;
 587
 588         ch_info = iwl_get_channel_info(priv, band, channel);
 589         if (!is_channel_valid(ch_info))
 590                 return 0;
 591
 592         if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
 593                 return !(ch_info->fat_extension_channel &
 594                                         IEEE80211_CHAN_NO_FAT_ABOVE);
 595         else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
 596                 return !(ch_info->fat_extension_channel &
 597                                         IEEE80211_CHAN_NO_FAT_BELOW);
 598
 599         return 0;
 600 }
 601
 602 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
 603                          struct ieee80211_sta_ht_cap *sta_ht_inf)
 604 {
 605         struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;
 606
 607         if ((!iwl_ht_conf->is_ht) ||
 608            (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ) ||
 609            (iwl_ht_conf->extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE))
 610                 return 0;
 611
 612         if (sta_ht_inf) {
 613                 if ((!sta_ht_inf->ht_supported) ||
 614                    (!(sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)))
 615                         return 0;
 616         }
 617
 618         return iwl_is_channel_extension(priv, priv->band,
 619                                         le16_to_cpu(priv->staging_rxon.channel),
 620                                         iwl_ht_conf->extension_chan_offset);
 621 }
 622 EXPORT_SYMBOL(iwl_is_fat_tx_allowed);
 623
 624 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 625 {
 626         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 627
 628         if (hw_decrypt)
 629                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 630         else
 631                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 632
 633 }
 634 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
 635
 636 /**
 637  * iwl_check_rxon_cmd - validate RXON structure is valid
 638  *
 639  * NOTE:  This is really only useful during development and can eventually
 640  * be #ifdef'd out once the driver is stable and folks aren't actively
 641  * making changes
 642  */
 643 int iwl_check_rxon_cmd(struct iwl_priv *priv)
 644 {
 645         int error = 0;
 646         int counter = 1;
 647         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 648
 649         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 650                 error |= le32_to_cpu(rxon->flags &
 651                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 652                                  RXON_FLG_RADAR_DETECT_MSK));
 653                 if (error)
 654                         IWL_WARN(priv, "check 24G fields %d | %d\n",
 655                                     counter++, error);
 656         } else {
 657                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 658                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 659                 if (error)
 660                         IWL_WARN(priv, "check 52 fields %d | %d\n",
 661                                     counter++, error);
 662                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 663                 if (error)
 664                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
 665                                     counter++, error);
 666         }
 667         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 668         if (error)
 669                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
 670
 671         /* make sure basic rates 6Mbps and 1Mbps are supported */
 672         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 673                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 674         if (error)
 675                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
 676
 677         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 678         if (error)
 679                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
 680
 681         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 682                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 683         if (error)
 684                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
 685                             counter++, error);
 686
 687         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 688                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 689         if (error)
 690                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
 691                             counter++, error);
 692
 693         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 694                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 695         if (error)
 696                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
 697                             counter++, error);
 698
 699         if (error)
 700                 IWL_WARN(priv, "Tuning to channel %d\n",
 701                             le16_to_cpu(rxon->channel));
 702
 703         if (error) {
 704                 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
 705                 return -1;
 706         }
 707         return 0;
 708 }
 709 EXPORT_SYMBOL(iwl_check_rxon_cmd);
 710
 711 /**
 712  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 713  * @priv: staging_rxon is compared to active_rxon
 714  *
 715  * If the RXON structure is changing enough to require a new tune,
 716  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 717  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 718  */
 719 int iwl_full_rxon_required(struct iwl_priv *priv)
 720 {
 721
 722         /* These items are only settable from the full RXON command */
 723         if (!(iwl_is_associated(priv)) ||
 724             compare_ether_addr(priv->staging_rxon.bssid_addr,
 725                                priv->active_rxon.bssid_addr) ||
 726             compare_ether_addr(priv->staging_rxon.node_addr,
 727                                priv->active_rxon.node_addr) ||
 728             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 729                                priv->active_rxon.wlap_bssid_addr) ||
 730             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 731             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 732             (priv->staging_rxon.air_propagation !=
 733              priv->active_rxon.air_propagation) ||
 734             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 735              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 736             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 737              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 738             (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
 739              priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
 740             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 741                 return 1;
 742
 743         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 744          * be updated with the RXON_ASSOC command -- however only some
 745          * flag transitions are allowed using RXON_ASSOC */
 746
 747         /* Check if we are not switching bands */
 748         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 749             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 750                 return 1;
 751
 752         /* Check if we are switching association toggle */
 753         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 754                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 755                 return 1;
 756
 757         return 0;
 758 }
 759 EXPORT_SYMBOL(iwl_full_rxon_required);
 760
 761 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 762 {
 763         int i;
 764         int rate_mask;
 765
 766         /* Set rate mask*/
 767         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 768                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 769         else
 770                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 771
 772         /* Find lowest valid rate */
 773         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 774                                         i = iwl_rates[i].next_ieee) {
 775                 if (rate_mask & (1 << i))
 776                         return iwl_rates[i].plcp;
 777         }
 778
 779         /* No valid rate was found. Assign the lowest one */
 780         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 781                 return IWL_RATE_1M_PLCP;
 782         else
 783                 return IWL_RATE_6M_PLCP;
 784 }
 785 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
 786
 787 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
 788 {
 789         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 790         u32 val;
 791
 792         if (!ht_info->is_ht) {
 793                 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 794                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK |
 795                         RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
 796                         RXON_FLG_FAT_PROT_MSK |
 797                         RXON_FLG_HT_PROT_MSK);
 798                 return;
 799         }
 800
 801         /* Set up channel bandwidth:  20 MHz only, or 20/40 mixed if fat ok */
 802         if (iwl_is_fat_tx_allowed(priv, NULL))
 803                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK;
 804         else
 805                 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 806                                  RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 807
 808         /* Note: control channel is opposite of extension channel */
 809         switch (ht_info->extension_chan_offset) {
 810         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 811                 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
 812                 break;
 813         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 814                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 815                 break;
 816         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
 817         default:
 818                 rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK;
 819                 break;
 820         }
 821
 822         val = ht_info->ht_protection;
 823
 824         rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS);
 825
 826         if (priv->cfg->ops->hcmd->set_rxon_chain)
 827                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
 828
 829         IWL_DEBUG_ASSOC(priv, "supported HT rate 0x%X 0x%X 0x%X "
 830                         "rxon flags 0x%X operation mode :0x%X "
 831                         "extension channel offset 0x%x\n",
 832                         ht_info->mcs.rx_mask[0],
 833                         ht_info->mcs.rx_mask[1],
 834                         ht_info->mcs.rx_mask[2],
 835                         le32_to_cpu(rxon->flags), ht_info->ht_protection,
 836                         ht_info->extension_chan_offset);
 837         return;
 838 }
 839 EXPORT_SYMBOL(iwl_set_rxon_ht);
 840
 841 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 842 #define IWL_NUM_RX_CHAINS_SINGLE        2
 843 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 844 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 845
 846 /* Determine how many receiver/antenna chains to use.
 847  * More provides better reception via diversity.  Fewer saves power.
 848  * MIMO (dual stream) requires at least 2, but works better with 3.
 849  * This does not determine *which* chains to use, just how many.
 850  */
 851 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 852 {
 853         bool is_single = is_single_rx_stream(priv);
 854         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 855
 856         /* # of Rx chains to use when expecting MIMO. */
 857         if (is_single || (!is_cam && (priv->current_ht_config.sm_ps ==
 858                                                  WLAN_HT_CAP_SM_PS_STATIC)))
 859                 return IWL_NUM_RX_CHAINS_SINGLE;
 860         else
 861                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 862 }
 863
 864 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 865 {
 866         int idle_cnt;
 867         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 868         /* # Rx chains when idling and maybe trying to save power */
 869         switch (priv->current_ht_config.sm_ps) {
 870         case WLAN_HT_CAP_SM_PS_STATIC:
 871         case WLAN_HT_CAP_SM_PS_DYNAMIC:
 872                 idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
 873                                         IWL_NUM_IDLE_CHAINS_SINGLE;
 874                 break;
 875         case WLAN_HT_CAP_SM_PS_DISABLED:
 876                 idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
 877                 break;
 878         case WLAN_HT_CAP_SM_PS_INVALID:
 879         default:
 880                 IWL_ERR(priv, "invalid mimo ps mode %d\n",
 881                            priv->current_ht_config.sm_ps);
 882                 WARN_ON(1);
 883                 idle_cnt = -1;
 884                 break;
 885         }
 886         return idle_cnt;
 887 }
 888
 889 /* up to 4 chains */
 890 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
 891 {
 892         u8 res;
 893         res = (chain_bitmap & BIT(0)) >> 0;
 894         res += (chain_bitmap & BIT(1)) >> 1;
 895         res += (chain_bitmap & BIT(2)) >> 2;
 896         res += (chain_bitmap & BIT(4)) >> 4;
 897         return res;
 898 }
 899
 900 /**
 901  * iwl_is_monitor_mode - Determine if interface in monitor mode
 902  *
 903  * priv->iw_mode is set in add_interface, but add_interface is
 904  * never called for monitor mode. The only way mac80211 informs us about
 905  * monitor mode is through configuring filters (call to configure_filter).
 906  */
 907 static bool iwl_is_monitor_mode(struct iwl_priv *priv)
 908 {
 909         return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
 910 }
 911
 912 /**
 913  * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
 914  *
 915  * Selects how many and which Rx receivers/antennas/chains to use.
 916  * This should not be used for scan command ... it puts data in wrong place.
 917  */
 918 void iwl_set_rxon_chain(struct iwl_priv *priv)
 919 {
 920         bool is_single = is_single_rx_stream(priv);
 921         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 922         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
 923         u32 active_chains;
 924         u16 rx_chain;
 925
 926         /* Tell uCode which antennas are actually connected.
 927          * Before first association, we assume all antennas are connected.
 928          * Just after first association, iwl_chain_noise_calibration()
 929          *    checks which antennas actually *are* connected. */
 930          if (priv->chain_noise_data.active_chains)
 931                 active_chains = priv->chain_noise_data.active_chains;
 932         else
 933                 active_chains = priv->hw_params.valid_rx_ant;
 934
 935         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
 936
 937         /* How many receivers should we use? */
 938         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
 939         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
 940
 941
 942         /* correct rx chain count according hw settings
 943          * and chain noise calibration
 944          */
 945         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
 946         if (valid_rx_cnt < active_rx_cnt)
 947                 active_rx_cnt = valid_rx_cnt;
 948
 949         if (valid_rx_cnt < idle_rx_cnt)
 950                 idle_rx_cnt = valid_rx_cnt;
 951
 952         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
 953         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
 954
 955         /* copied from 'iwl_bg_request_scan()' */
 956         /* Force use of chains B and C (0x6) for Rx for 4965
 957          * Avoid A (0x1) because of its off-channel reception on A-band.
 958          * MIMO is not used here, but value is required */
 959         if (iwl_is_monitor_mode(priv) &&
 960             !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
 961             ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
 962                 rx_chain = 0x07 << RXON_RX_CHAIN_VALID_POS;
 963                 rx_chain |= 0x06 << RXON_RX_CHAIN_FORCE_SEL_POS;
 964                 rx_chain |= 0x07 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
 965                 rx_chain |= 0x01 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
 966         }
 967
 968         priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
 969
 970         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
 971                 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
 972         else
 973                 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
 974
 975         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
 976                         priv->staging_rxon.rx_chain,
 977                         active_rx_cnt, idle_rx_cnt);
 978
 979         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
 980                 active_rx_cnt < idle_rx_cnt);
 981 }
 982 EXPORT_SYMBOL(iwl_set_rxon_chain);
 983
 984 /**
 985  * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
 986  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
 987  * @channel: Any channel valid for the requested phymode
 988
 989  * In addition to setting the staging RXON, priv->phymode is also set.
 990  *
 991  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 992  * in the staging RXON flag structure based on the phymode
 993  */
 994 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
 995 {
 996         enum ieee80211_band band = ch->band;
 997         u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
 998
 999         if (!iwl_get_channel_info(priv, band, channel)) {
1000                 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1001                                channel, band);
1002                 return -EINVAL;
1003         }
1004
1005         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1006             (priv->band == band))
1007                 return 0;
1008
1009         priv->staging_rxon.channel = cpu_to_le16(channel);
1010         if (band == IEEE80211_BAND_5GHZ)
1011                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1012         else
1013                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1014
1015         priv->band = band;
1016
1017         IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1018
1019         return 0;
1020 }
1021 EXPORT_SYMBOL(iwl_set_rxon_channel);
1022
1023 void iwl_set_flags_for_band(struct iwl_priv *priv,
1024                             enum ieee80211_band band)
1025 {
1026         if (band == IEEE80211_BAND_5GHZ) {
1027                 priv->staging_rxon.flags &=
1028                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1029                       | RXON_FLG_CCK_MSK);
1030                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1031         } else {
1032                 /* Copied from iwl_post_associate() */
1033                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1034                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1035                 else
1036                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1037
1038                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1039                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1040
1041                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1042                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1043                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1044         }
1045 }
1046 EXPORT_SYMBOL(iwl_set_flags_for_band);
1047
1048 /*
1049  * initialize rxon structure with default values from eeprom
1050  */
1051 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1052 {
1053         const struct iwl_channel_info *ch_info;
1054
1055         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1056
1057         switch (mode) {
1058         case NL80211_IFTYPE_AP:
1059                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1060                 break;
1061
1062         case NL80211_IFTYPE_STATION:
1063                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1064                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1065                 break;
1066
1067         case NL80211_IFTYPE_ADHOC:
1068                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1069                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1070                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1071                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1072                 break;
1073
1074         case NL80211_IFTYPE_MONITOR:
1075                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1076                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1077                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1078                 break;
1079         default:
1080                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1081                 break;
1082         }
1083
1084 #if 0
1085         /* TODO:  Figure out when short_preamble would be set and cache from
1086          * that */
1087         if (!hw_to_local(priv->hw)->short_preamble)
1088                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1089         else
1090                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1091 #endif
1092
1093         ch_info = iwl_get_channel_info(priv, priv->band,
1094                                        le16_to_cpu(priv->active_rxon.channel));
1095
1096         if (!ch_info)
1097                 ch_info = &priv->channel_info[0];
1098
1099         /*
1100          * in some case A channels are all non IBSS
1101          * in this case force B/G channel
1102          */
1103         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1104             !(is_channel_ibss(ch_info)))
1105                 ch_info = &priv->channel_info[0];
1106
1107         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1108         priv->band = ch_info->band;
1109
1110         iwl_set_flags_for_band(priv, priv->band);
1111
1112         priv->staging_rxon.ofdm_basic_rates =
1113             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1114         priv->staging_rxon.cck_basic_rates =
1115             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1116
1117         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1118                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1119         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1120         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1121         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1122         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1123         priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1124 }
1125 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1126
1127 void iwl_set_rate(struct iwl_priv *priv)
1128 {
1129         const struct ieee80211_supported_band *hw = NULL;
1130         struct ieee80211_rate *rate;
1131         int i;
1132
1133         hw = iwl_get_hw_mode(priv, priv->band);
1134         if (!hw) {
1135                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1136                 return;
1137         }
1138
1139         priv->active_rate = 0;
1140         priv->active_rate_basic = 0;
1141
1142         for (i = 0; i < hw->n_bitrates; i++) {
1143                 rate = &(hw->bitrates[i]);
1144                 if (rate->hw_value < IWL_RATE_COUNT)
1145                         priv->active_rate |= (1 << rate->hw_value);
1146         }
1147
1148         IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1149                        priv->active_rate, priv->active_rate_basic);
1150
1151         /*
1152          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1153          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1154          * OFDM
1155          */
1156         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1157                 priv->staging_rxon.cck_basic_rates =
1158                     ((priv->active_rate_basic &
1159                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1160         else
1161                 priv->staging_rxon.cck_basic_rates =
1162                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1163
1164         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1165                 priv->staging_rxon.ofdm_basic_rates =
1166                     ((priv->active_rate_basic &
1167                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1168                       IWL_FIRST_OFDM_RATE) & 0xFF;
1169         else
1170                 priv->staging_rxon.ofdm_basic_rates =
1171                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1172 }
1173 EXPORT_SYMBOL(iwl_set_rate);
1174
1175 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1176 {
1177         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1178         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1179         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1180         IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1181                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1182         rxon->channel = csa->channel;
1183         priv->staging_rxon.channel = csa->channel;
1184 }
1185 EXPORT_SYMBOL(iwl_rx_csa);
1186
1187 #ifdef CONFIG_IWLWIFI_DEBUG
1188 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1189 {
1190         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1191
1192         IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1193         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1194         IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1195         IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1196         IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1197                         le32_to_cpu(rxon->filter_flags));
1198         IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1199         IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1200                         rxon->ofdm_basic_rates);
1201         IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1202         IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1203         IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1204         IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1205 }
1206 #endif
1207
1208 /**
1209  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1210  */
1211 void iwl_irq_handle_error(struct iwl_priv *priv)
1212 {
1213         /* Set the FW error flag -- cleared on iwl_down */
1214         set_bit(STATUS_FW_ERROR, &priv->status);
1215
1216         /* Cancel currently queued command. */
1217         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1218
1219 #ifdef CONFIG_IWLWIFI_DEBUG
1220         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1221                 iwl_dump_nic_error_log(priv);
1222                 iwl_dump_nic_event_log(priv);
1223                 iwl_print_rx_config_cmd(priv);
1224         }
1225 #endif
1226
1227         wake_up_interruptible(&priv->wait_command_queue);
1228
1229         /* Keep the restart process from trying to send host
1230          * commands by clearing the INIT status bit */
1231         clear_bit(STATUS_READY, &priv->status);
1232
1233         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1234                 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1235                           "Restarting adapter due to uCode error.\n");
1236
1237                 if (iwl_is_associated(priv)) {
1238                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1239                                sizeof(priv->recovery_rxon));
1240                         priv->error_recovering = 1;
1241                 }
1242                 if (priv->cfg->mod_params->restart_fw)
1243                         queue_work(priv->workqueue, &priv->restart);
1244         }
1245 }
1246 EXPORT_SYMBOL(iwl_irq_handle_error);
1247
1248 void iwl_configure_filter(struct ieee80211_hw *hw,
1249                           unsigned int changed_flags,
1250                           unsigned int *total_flags,
1251                           int mc_count, struct dev_addr_list *mc_list)
1252 {
1253         struct iwl_priv *priv = hw->priv;
1254         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1255
1256         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1257                         changed_flags, *total_flags);
1258
1259         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1260                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1261                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
1262                 else
1263                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1264         }
1265         if (changed_flags & FIF_ALLMULTI) {
1266                 if (*total_flags & FIF_ALLMULTI)
1267                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1268                 else
1269                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1270         }
1271         if (changed_flags & FIF_CONTROL) {
1272                 if (*total_flags & FIF_CONTROL)
1273                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1274                 else
1275                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1276         }
1277         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1278                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1279                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1280                 else
1281                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1282         }
1283
1284         /* We avoid iwl_commit_rxon here to commit the new filter flags
1285          * since mac80211 will call ieee80211_hw_config immediately.
1286          * (mc_list is not supported at this time). Otherwise, we need to
1287          * queue a background iwl_commit_rxon work.
1288          */
1289
1290         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1291                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1292 }
1293 EXPORT_SYMBOL(iwl_configure_filter);
1294
1295 int iwl_setup_mac(struct iwl_priv *priv)
1296 {
1297         int ret;
1298         struct ieee80211_hw *hw = priv->hw;
1299         hw->rate_control_algorithm = "iwl-agn-rs";
1300
1301         /* Tell mac80211 our characteristics */
1302         hw->flags = IEEE80211_HW_SIGNAL_DBM |
1303                     IEEE80211_HW_NOISE_DBM |
1304                     IEEE80211_HW_AMPDU_AGGREGATION |
1305                     IEEE80211_HW_SPECTRUM_MGMT |
1306                     IEEE80211_HW_SUPPORTS_PS;
1307         hw->wiphy->interface_modes =
1308                 BIT(NL80211_IFTYPE_STATION) |
1309                 BIT(NL80211_IFTYPE_ADHOC);
1310
1311         hw->wiphy->custom_regulatory = true;
1312         hw->wiphy->max_scan_ssids = 1;
1313         hw->wiphy->max_scan_ie_len = 0; /* XXX for now */
1314
1315         /* Default value; 4 EDCA QOS priorities */
1316         hw->queues = 4;
1317
1318         hw->conf.beacon_int = 100;
1319         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1320
1321         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1322                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1323                         &priv->bands[IEEE80211_BAND_2GHZ];
1324         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1325                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1326                         &priv->bands[IEEE80211_BAND_5GHZ];
1327
1328         ret = ieee80211_register_hw(priv->hw);
1329         if (ret) {
1330                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1331                 return ret;
1332         }
1333         priv->mac80211_registered = 1;
1334
1335         return 0;
1336 }
1337 EXPORT_SYMBOL(iwl_setup_mac);
1338
1339 int iwl_set_hw_params(struct iwl_priv *priv)
1340 {
1341         priv->hw_params.sw_crypto = priv->cfg->mod_params->sw_crypto;
1342         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1343         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1344         if (priv->cfg->mod_params->amsdu_size_8K)
1345                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1346         else
1347                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1348         priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1349
1350         if (priv->cfg->mod_params->disable_11n)
1351                 priv->cfg->sku &= ~IWL_SKU_N;
1352
1353         /* Device-specific setup */
1354         return priv->cfg->ops->lib->set_hw_params(priv);
1355 }
1356 EXPORT_SYMBOL(iwl_set_hw_params);
1357
1358 int iwl_init_drv(struct iwl_priv *priv)
1359 {
1360         int ret;
1361
1362         priv->ibss_beacon = NULL;
1363
1364         spin_lock_init(&priv->lock);
1365         spin_lock_init(&priv->power_data.lock);
1366         spin_lock_init(&priv->sta_lock);
1367         spin_lock_init(&priv->hcmd_lock);
1368
1369         INIT_LIST_HEAD(&priv->free_frames);
1370
1371         mutex_init(&priv->mutex);
1372
1373         /* Clear the driver's (not device's) station table */
1374         priv->cfg->ops->smgmt->clear_station_table(priv);
1375
1376         priv->data_retry_limit = -1;
1377         priv->ieee_channels = NULL;
1378         priv->ieee_rates = NULL;
1379         priv->band = IEEE80211_BAND_2GHZ;
1380
1381         priv->iw_mode = NL80211_IFTYPE_STATION;
1382
1383         priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
1384
1385         /* Choose which receivers/antennas to use */
1386         if (priv->cfg->ops->hcmd->set_rxon_chain)
1387                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1388
1389         iwl_init_scan_params(priv);
1390
1391         iwl_reset_qos(priv);
1392
1393         priv->qos_data.qos_active = 0;
1394         priv->qos_data.qos_cap.val = 0;
1395
1396         priv->rates_mask = IWL_RATES_MASK;
1397         /* If power management is turned on, default to CAM mode */
1398         priv->power_mode = IWL_POWER_MODE_CAM;
1399         priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
1400
1401         ret = iwl_init_channel_map(priv);
1402         if (ret) {
1403                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1404                 goto err;
1405         }
1406
1407         ret = iwlcore_init_geos(priv);
1408         if (ret) {
1409                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1410                 goto err_free_channel_map;
1411         }
1412         iwlcore_init_hw_rates(priv, priv->ieee_rates);
1413
1414         return 0;
1415
1416 err_free_channel_map:
1417         iwl_free_channel_map(priv);
1418 err:
1419         return ret;
1420 }
1421 EXPORT_SYMBOL(iwl_init_drv);
1422
1423 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1424 {
1425         int ret = 0;
1426         if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1427                 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1428                          tx_power,
1429                          IWL_TX_POWER_TARGET_POWER_MIN);
1430                 return -EINVAL;
1431         }
1432
1433         if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
1434                 IWL_WARN(priv, "Requested user TXPOWER %d above upper limit %d.\n",
1435                          tx_power,
1436                          IWL_TX_POWER_TARGET_POWER_MAX);
1437                 return -EINVAL;
1438         }
1439
1440         if (priv->tx_power_user_lmt != tx_power)
1441                 force = true;
1442
1443         priv->tx_power_user_lmt = tx_power;
1444
1445         /* if nic is not up don't send command */
1446         if (!iwl_is_ready_rf(priv))
1447                 return ret;
1448
1449         if (force && priv->cfg->ops->lib->send_tx_power)
1450                 ret = priv->cfg->ops->lib->send_tx_power(priv);
1451
1452         return ret;
1453 }
1454 EXPORT_SYMBOL(iwl_set_tx_power);
1455
1456 void iwl_uninit_drv(struct iwl_priv *priv)
1457 {
1458         iwl_calib_free_results(priv);
1459         iwlcore_free_geos(priv);
1460         iwl_free_channel_map(priv);
1461         kfree(priv->scan);
1462 }
1463 EXPORT_SYMBOL(iwl_uninit_drv);
1464
1465
1466 void iwl_disable_interrupts(struct iwl_priv *priv)
1467 {
1468         clear_bit(STATUS_INT_ENABLED, &priv->status);
1469
1470         /* disable interrupts from uCode/NIC to host */
1471         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1472
1473         /* acknowledge/clear/reset any interrupts still pending
1474          * from uCode or flow handler (Rx/Tx DMA) */
1475         iwl_write32(priv, CSR_INT, 0xffffffff);
1476         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1477         IWL_DEBUG_ISR(priv, "Disabled interrupts\n");
1478 }
1479 EXPORT_SYMBOL(iwl_disable_interrupts);
1480
1481 void iwl_enable_interrupts(struct iwl_priv *priv)
1482 {
1483         IWL_DEBUG_ISR(priv, "Enabling interrupts\n");
1484         set_bit(STATUS_INT_ENABLED, &priv->status);
1485         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1486 }
1487 EXPORT_SYMBOL(iwl_enable_interrupts);
1488
1489 irqreturn_t iwl_isr(int irq, void *data)
1490 {
1491         struct iwl_priv *priv = data;
1492         u32 inta, inta_mask;
1493         u32 inta_fh;
1494         if (!priv)
1495                 return IRQ_NONE;
1496
1497         spin_lock(&priv->lock);
1498
1499         /* Disable (but don't clear!) interrupts here to avoid
1500          *    back-to-back ISRs and sporadic interrupts from our NIC.
1501          * If we have something to service, the tasklet will re-enable ints.
1502          * If we *don't* have something, we'll re-enable before leaving here. */
1503         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1504         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1505
1506         /* Discover which interrupts are active/pending */
1507         inta = iwl_read32(priv, CSR_INT);
1508         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1509
1510         /* Ignore interrupt if there's nothing in NIC to service.
1511          * This may be due to IRQ shared with another device,
1512          * or due to sporadic interrupts thrown from our NIC. */
1513         if (!inta && !inta_fh) {
1514                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1515                 goto none;
1516         }
1517
1518         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1519                 /* Hardware disappeared. It might have already raised
1520                  * an interrupt */
1521                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1522                 goto unplugged;
1523         }
1524
1525         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1526                       inta, inta_mask, inta_fh);
1527
1528         inta &= ~CSR_INT_BIT_SCD;
1529
1530         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1531         if (likely(inta || inta_fh))
1532                 tasklet_schedule(&priv->irq_tasklet);
1533
1534  unplugged:
1535         spin_unlock(&priv->lock);
1536         return IRQ_HANDLED;
1537
1538  none:
1539         /* re-enable interrupts here since we don't have anything to service. */
1540         /* only Re-enable if diabled by irq */
1541         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1542                 iwl_enable_interrupts(priv);
1543         spin_unlock(&priv->lock);
1544         return IRQ_NONE;
1545 }
1546 EXPORT_SYMBOL(iwl_isr);
1547
1548 int iwl_send_bt_config(struct iwl_priv *priv)
1549 {
1550         struct iwl_bt_cmd bt_cmd = {
1551                 .flags = 3,
1552                 .lead_time = 0xAA,
1553                 .max_kill = 1,
1554                 .kill_ack_mask = 0,
1555                 .kill_cts_mask = 0,
1556         };
1557
1558         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1559                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
1560 }
1561 EXPORT_SYMBOL(iwl_send_bt_config);
1562
1563 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
1564 {
1565         u32 stat_flags = 0;
1566         struct iwl_host_cmd cmd = {
1567                 .id = REPLY_STATISTICS_CMD,
1568                 .meta.flags = flags,
1569                 .len = sizeof(stat_flags),
1570                 .data = (u8 *) &stat_flags,
1571         };
1572         return iwl_send_cmd(priv, &cmd);
1573 }
1574 EXPORT_SYMBOL(iwl_send_statistics_request);
1575
1576 /**
1577  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
1578  *   using sample data 100 bytes apart.  If these sample points are good,
1579  *   it's a pretty good bet that everything between them is good, too.
1580  */
1581 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1582 {
1583         u32 val;
1584         int ret = 0;
1585         u32 errcnt = 0;
1586         u32 i;
1587
1588         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1589
1590         ret = iwl_grab_nic_access(priv);
1591         if (ret)
1592                 return ret;
1593
1594         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1595                 /* read data comes through single port, auto-incr addr */
1596                 /* NOTE: Use the debugless read so we don't flood kernel log
1597                  * if IWL_DL_IO is set */
1598                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1599                         i + IWL49_RTC_INST_LOWER_BOUND);
1600                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1601                 if (val != le32_to_cpu(*image)) {
1602                         ret = -EIO;
1603                         errcnt++;
1604                         if (errcnt >= 3)
1605                                 break;
1606                 }
1607         }
1608
1609         iwl_release_nic_access(priv);
1610
1611         return ret;
1612 }
1613
1614 /**
1615  * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1616  *     looking at all data.
1617  */
1618 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1619                                  u32 len)
1620 {
1621         u32 val;
1622         u32 save_len = len;
1623         int ret = 0;
1624         u32 errcnt;
1625
1626         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1627
1628         ret = iwl_grab_nic_access(priv);
1629         if (ret)
1630                 return ret;
1631
1632         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1633                            IWL49_RTC_INST_LOWER_BOUND);
1634
1635         errcnt = 0;
1636         for (; len > 0; len -= sizeof(u32), image++) {
1637                 /* read data comes through single port, auto-incr addr */
1638                 /* NOTE: Use the debugless read so we don't flood kernel log
1639                  * if IWL_DL_IO is set */
1640                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1641                 if (val != le32_to_cpu(*image)) {
1642                         IWL_ERR(priv, "uCode INST section is invalid at "
1643                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
1644                                   save_len - len, val, le32_to_cpu(*image));
1645                         ret = -EIO;
1646                         errcnt++;
1647                         if (errcnt >= 20)
1648                                 break;
1649                 }
1650         }
1651
1652         iwl_release_nic_access(priv);
1653
1654         if (!errcnt)
1655                 IWL_DEBUG_INFO(priv,
1656                     "ucode image in INSTRUCTION memory is good\n");
1657
1658         return ret;
1659 }
1660
1661 /**
1662  * iwl_verify_ucode - determine which instruction image is in SRAM,
1663  *    and verify its contents
1664  */
1665 int iwl_verify_ucode(struct iwl_priv *priv)
1666 {
1667         __le32 *image;
1668         u32 len;
1669         int ret;
1670
1671         /* Try bootstrap */
1672         image = (__le32 *)priv->ucode_boot.v_addr;
1673         len = priv->ucode_boot.len;
1674         ret = iwlcore_verify_inst_sparse(priv, image, len);
1675         if (!ret) {
1676                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
1677                 return 0;
1678         }
1679
1680         /* Try initialize */
1681         image = (__le32 *)priv->ucode_init.v_addr;
1682         len = priv->ucode_init.len;
1683         ret = iwlcore_verify_inst_sparse(priv, image, len);
1684         if (!ret) {
1685                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
1686                 return 0;
1687         }
1688
1689         /* Try runtime/protocol */
1690         image = (__le32 *)priv->ucode_code.v_addr;
1691         len = priv->ucode_code.len;
1692         ret = iwlcore_verify_inst_sparse(priv, image, len);
1693         if (!ret) {
1694                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
1695                 return 0;
1696         }
1697
1698         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1699
1700         /* Since nothing seems to match, show first several data entries in
1701          * instruction SRAM, so maybe visual inspection will give a clue.
1702          * Selection of bootstrap image (vs. other images) is arbitrary. */
1703         image = (__le32 *)priv->ucode_boot.v_addr;
1704         len = priv->ucode_boot.len;
1705         ret = iwl_verify_inst_full(priv, image, len);
1706
1707         return ret;
1708 }
1709 EXPORT_SYMBOL(iwl_verify_ucode);
1710
1711
1712 static const char *desc_lookup_text[] = {
1713         "OK",
1714         "FAIL",
1715         "BAD_PARAM",
1716         "BAD_CHECKSUM",
1717         "NMI_INTERRUPT_WDG",
1718         "SYSASSERT",
1719         "FATAL_ERROR",
1720         "BAD_COMMAND",
1721         "HW_ERROR_TUNE_LOCK",
1722         "HW_ERROR_TEMPERATURE",
1723         "ILLEGAL_CHAN_FREQ",
1724         "VCC_NOT_STABLE",
1725         "FH_ERROR",
1726         "NMI_INTERRUPT_HOST",
1727         "NMI_INTERRUPT_ACTION_PT",
1728         "NMI_INTERRUPT_UNKNOWN",
1729         "UCODE_VERSION_MISMATCH",
1730         "HW_ERROR_ABS_LOCK",
1731         "HW_ERROR_CAL_LOCK_FAIL",
1732         "NMI_INTERRUPT_INST_ACTION_PT",
1733         "NMI_INTERRUPT_DATA_ACTION_PT",
1734         "NMI_TRM_HW_ER",
1735         "NMI_INTERRUPT_TRM",
1736         "NMI_INTERRUPT_BREAK_POINT"
1737         "DEBUG_0",
1738         "DEBUG_1",
1739         "DEBUG_2",
1740         "DEBUG_3",
1741         "UNKNOWN"
1742 };
1743
1744 static const char *desc_lookup(int i)
1745 {
1746         int max = ARRAY_SIZE(desc_lookup_text) - 1;
1747
1748         if (i < 0 || i > max)
1749                 i = max;
1750
1751         return desc_lookup_text[i];
1752 }
1753
1754 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1755 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1756
1757 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1758 {
1759         u32 data2, line;
1760         u32 desc, time, count, base, data1;
1761         u32 blink1, blink2, ilink1, ilink2;
1762         int ret;
1763
1764         if (priv->ucode_type == UCODE_INIT)
1765                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1766         else
1767                 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1768
1769         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1770                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1771                 return;
1772         }
1773
1774         ret = iwl_grab_nic_access(priv);
1775         if (ret) {
1776                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1777                 return;
1778         }
1779
1780         count = iwl_read_targ_mem(priv, base);
1781
1782         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1783                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1784                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1785                         priv->status, count);
1786         }
1787
1788         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1789         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1790         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1791         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1792         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1793         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1794         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1795         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1796         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1797
1798         IWL_ERR(priv, "Desc                               Time       "
1799                 "data1      data2      line\n");
1800         IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1801                 desc_lookup(desc), desc, time, data1, data2, line);
1802         IWL_ERR(priv, "blink1  blink2  ilink1  ilink2\n");
1803         IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1804                 ilink1, ilink2);
1805
1806         iwl_release_nic_access(priv);
1807 }
1808 EXPORT_SYMBOL(iwl_dump_nic_error_log);
1809
1810 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1811
1812 /**
1813  * iwl_print_event_log - Dump error event log to syslog
1814  *
1815  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
1816  */
1817 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1818                                 u32 num_events, u32 mode)
1819 {
1820         u32 i;
1821         u32 base;       /* SRAM byte address of event log header */
1822         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1823         u32 ptr;        /* SRAM byte address of log data */
1824         u32 ev, time, data; /* event log data */
1825
1826         if (num_events == 0)
1827                 return;
1828         if (priv->ucode_type == UCODE_INIT)
1829                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1830         else
1831                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1832
1833         if (mode == 0)
1834                 event_size = 2 * sizeof(u32);
1835         else
1836                 event_size = 3 * sizeof(u32);
1837
1838         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1839
1840         /* "time" is actually "data" for mode 0 (no timestamp).
1841         * place event id # at far right for easier visual parsing. */
1842         for (i = 0; i < num_events; i++) {
1843                 ev = iwl_read_targ_mem(priv, ptr);
1844                 ptr += sizeof(u32);
1845                 time = iwl_read_targ_mem(priv, ptr);
1846                 ptr += sizeof(u32);
1847                 if (mode == 0) {
1848                         /* data, ev */
1849                         IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1850                 } else {
1851                         data = iwl_read_targ_mem(priv, ptr);
1852                         ptr += sizeof(u32);
1853                         IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1854                                         time, data, ev);
1855                 }
1856         }
1857 }
1858
1859 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1860 {
1861         int ret;
1862         u32 base;       /* SRAM byte address of event log header */
1863         u32 capacity;   /* event log capacity in # entries */
1864         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1865         u32 num_wraps;  /* # times uCode wrapped to top of log */
1866         u32 next_entry; /* index of next entry to be written by uCode */
1867         u32 size;       /* # entries that we'll print */
1868
1869         if (priv->ucode_type == UCODE_INIT)
1870                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1871         else
1872                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1873
1874         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1875                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1876                 return;
1877         }
1878
1879         ret = iwl_grab_nic_access(priv);
1880         if (ret) {
1881                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1882                 return;
1883         }
1884
1885         /* event log header */
1886         capacity = iwl_read_targ_mem(priv, base);
1887         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1888         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1889         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1890
1891         size = num_wraps ? capacity : next_entry;
1892
1893         /* bail out if nothing in log */
1894         if (size == 0) {
1895                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1896                 iwl_release_nic_access(priv);
1897                 return;
1898         }
1899
1900         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1901                         size, num_wraps);
1902
1903         /* if uCode has wrapped back to top of log, start at the oldest entry,
1904          * i.e the next one that uCode would fill. */
1905         if (num_wraps)
1906                 iwl_print_event_log(priv, next_entry,
1907                                         capacity - next_entry, mode);
1908         /* (then/else) start at top of log */
1909         iwl_print_event_log(priv, 0, next_entry, mode);
1910
1911         iwl_release_nic_access(priv);
1912 }
1913 EXPORT_SYMBOL(iwl_dump_nic_event_log);
1914
1915 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1916 {
1917         struct iwl_ct_kill_config cmd;
1918         unsigned long flags;
1919         int ret = 0;
1920
1921         spin_lock_irqsave(&priv->lock, flags);
1922         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1923                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1924         spin_unlock_irqrestore(&priv->lock, flags);
1925
1926         cmd.critical_temperature_R =
1927                 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1928
1929         ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1930                                sizeof(cmd), &cmd);
1931         if (ret)
1932                 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1933         else
1934                 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD succeeded, "
1935                         "critical temperature is %d\n",
1936                         cmd.critical_temperature_R);
1937 }
1938 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
1939
1940
1941 /*
1942  * CARD_STATE_CMD
1943  *
1944  * Use: Sets the device's internal card state to enable, disable, or halt
1945  *
1946  * When in the 'enable' state the card operates as normal.
1947  * When in the 'disable' state, the card enters into a low power mode.
1948  * When in the 'halt' state, the card is shut down and must be fully
1949  * restarted to come back on.
1950  */
1951 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1952 {
1953         struct iwl_host_cmd cmd = {
1954                 .id = REPLY_CARD_STATE_CMD,
1955                 .len = sizeof(u32),
1956                 .data = &flags,
1957                 .meta.flags = meta_flag,
1958         };
1959
1960         return iwl_send_cmd(priv, &cmd);
1961 }
1962 EXPORT_SYMBOL(iwl_send_card_state);
1963
1964 void iwl_radio_kill_sw_disable_radio(struct iwl_priv *priv)
1965 {
1966         unsigned long flags;
1967
1968         if (test_bit(STATUS_RF_KILL_SW, &priv->status))
1969                 return;
1970
1971         IWL_DEBUG_RF_KILL(priv, "Manual SW RF KILL set to: RADIO OFF\n");
1972
1973         iwl_scan_cancel(priv);
1974         /* FIXME: This is a workaround for AP */
1975         if (priv->iw_mode != NL80211_IFTYPE_AP) {
1976                 spin_lock_irqsave(&priv->lock, flags);
1977                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1978                             CSR_UCODE_SW_BIT_RFKILL);
1979                 spin_unlock_irqrestore(&priv->lock, flags);
1980                 /* call the host command only if no hw rf-kill set */
1981                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1982                     iwl_is_ready(priv))
1983                         iwl_send_card_state(priv,
1984                                 CARD_STATE_CMD_DISABLE, 0);
1985                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1986                         /* make sure mac80211 stop sending Tx frame */
1987                 if (priv->mac80211_registered)
1988                         ieee80211_stop_queues(priv->hw);
1989         }
1990 }
1991 EXPORT_SYMBOL(iwl_radio_kill_sw_disable_radio);
1992
1993 int iwl_radio_kill_sw_enable_radio(struct iwl_priv *priv)
1994 {
1995         unsigned long flags;
1996
1997         if (!test_bit(STATUS_RF_KILL_SW, &priv->status))
1998                 return 0;
1999
2000         IWL_DEBUG_RF_KILL(priv, "Manual SW RF KILL set to: RADIO ON\n");
2001
2002         spin_lock_irqsave(&priv->lock, flags);
2003         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2004
2005         /* If the driver is up it will receive CARD_STATE_NOTIFICATION
2006          * notification where it will clear SW rfkill status.
2007          * Setting it here would break the handler. Only if the
2008          * interface is down we can set here since we don't
2009          * receive any further notification.
2010          */
2011         if (!priv->is_open)
2012                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2013         spin_unlock_irqrestore(&priv->lock, flags);
2014
2015         /* wake up ucode */
2016         msleep(10);
2017
2018         spin_lock_irqsave(&priv->lock, flags);
2019         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2020         if (!iwl_grab_nic_access(priv))
2021                 iwl_release_nic_access(priv);
2022         spin_unlock_irqrestore(&priv->lock, flags);
2023
2024         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2025                 IWL_DEBUG_RF_KILL(priv, "Can not turn radio back on - "
2026                                   "disabled by HW switch\n");
2027                 return 0;
2028         }
2029
2030         /* when driver is up while rfkill is on, it wont receive
2031          * any CARD_STATE_NOTIFICATION notifications so we have to
2032          * restart it in here
2033          */
2034         if (priv->is_open && !test_bit(STATUS_ALIVE, &priv->status)) {
2035                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2036                 if (!iwl_is_rfkill(priv))
2037                         queue_work(priv->workqueue, &priv->up);
2038         }
2039
2040         /* If the driver is already loaded, it will receive
2041          * CARD_STATE_NOTIFICATION notifications and the handler will
2042          * call restart to reload the driver.
2043          */
2044         return 1;
2045 }
2046 EXPORT_SYMBOL(iwl_radio_kill_sw_enable_radio);
2047
2048 void iwl_bg_rf_kill(struct work_struct *work)
2049 {
2050         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2051
2052         wake_up_interruptible(&priv->wait_command_queue);
2053
2054         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2055                 return;
2056
2057         mutex_lock(&priv->mutex);
2058
2059         if (!iwl_is_rfkill(priv)) {
2060                 IWL_DEBUG_RF_KILL(priv,
2061                           "HW and/or SW RF Kill no longer active, restarting "
2062                           "device\n");
2063                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status) &&
2064                     priv->is_open)
2065                         queue_work(priv->workqueue, &priv->restart);
2066         } else {
2067                 /* make sure mac80211 stop sending Tx frame */
2068                 if (priv->mac80211_registered)
2069                         ieee80211_stop_queues(priv->hw);
2070
2071                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2072                         IWL_DEBUG_RF_KILL(priv, "Can not turn radio back on - "
2073                                           "disabled by SW switch\n");
2074                 else
2075                         IWL_WARN(priv, "Radio Frequency Kill Switch is On:\n"
2076                                     "Kill switch must be turned off for "
2077                                     "wireless networking to work.\n");
2078         }
2079         mutex_unlock(&priv->mutex);
2080         iwl_rfkill_set_hw_state(priv);
2081 }
2082 EXPORT_SYMBOL(iwl_bg_rf_kill);
2083
2084 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2085                            struct iwl_rx_mem_buffer *rxb)
2086 {
2087 #ifdef CONFIG_IWLWIFI_DEBUG
2088         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2089         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2090         IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2091                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2092 #endif
2093 }
2094 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2095
2096 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2097                                       struct iwl_rx_mem_buffer *rxb)
2098 {
2099         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2100         IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2101                         "notification for %s:\n",
2102                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2103         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2104 }
2105 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2106
2107 void iwl_rx_reply_error(struct iwl_priv *priv,
2108                         struct iwl_rx_mem_buffer *rxb)
2109 {
2110         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2111
2112         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2113                 "seq 0x%04X ser 0x%08X\n",
2114                 le32_to_cpu(pkt->u.err_resp.error_type),
2115                 get_cmd_string(pkt->u.err_resp.cmd_id),
2116                 pkt->u.err_resp.cmd_id,
2117                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2118                 le32_to_cpu(pkt->u.err_resp.error_info));
2119 }
2120 EXPORT_SYMBOL(iwl_rx_reply_error);
2121
2122 void iwl_clear_isr_stats(struct iwl_priv *priv)
2123 {
2124         memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2125 }
2126 EXPORT_SYMBOL(iwl_clear_isr_stats);
2127
2128 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2129                            const struct ieee80211_tx_queue_params *params)
2130 {
2131         struct iwl_priv *priv = hw->priv;
2132         unsigned long flags;
2133         int q;
2134
2135         IWL_DEBUG_MAC80211(priv, "enter\n");
2136
2137         if (!iwl_is_ready_rf(priv)) {
2138                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2139                 return -EIO;
2140         }
2141
2142         if (queue >= AC_NUM) {
2143                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2144                 return 0;
2145         }
2146
2147         q = AC_NUM - 1 - queue;
2148
2149         spin_lock_irqsave(&priv->lock, flags);
2150
2151         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2152         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2153         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2154         priv->qos_data.def_qos_parm.ac[q].edca_txop =
2155                         cpu_to_le16((params->txop * 32));
2156
2157         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2158         priv->qos_data.qos_active = 1;
2159
2160         if (priv->iw_mode == NL80211_IFTYPE_AP)
2161                 iwl_activate_qos(priv, 1);
2162         else if (priv->assoc_id && iwl_is_associated(priv))
2163                 iwl_activate_qos(priv, 0);
2164
2165         spin_unlock_irqrestore(&priv->lock, flags);
2166
2167         IWL_DEBUG_MAC80211(priv, "leave\n");
2168         return 0;
2169 }
2170 EXPORT_SYMBOL(iwl_mac_conf_tx);
2171
2172 static void iwl_ht_conf(struct iwl_priv *priv,
2173                             struct ieee80211_bss_conf *bss_conf)
2174 {
2175         struct ieee80211_sta_ht_cap *ht_conf;
2176         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
2177         struct ieee80211_sta *sta;
2178
2179         IWL_DEBUG_MAC80211(priv, "enter: \n");
2180
2181         if (!iwl_conf->is_ht)
2182                 return;
2183
2184
2185         /*
2186          * It is totally wrong to base global information on something
2187          * that is valid only when associated, alas, this driver works
2188          * that way and I don't know how to fix it.
2189          */
2190
2191         rcu_read_lock();
2192         sta = ieee80211_find_sta(priv->hw, priv->bssid);
2193         if (!sta) {
2194                 rcu_read_unlock();
2195                 return;
2196         }
2197         ht_conf = &sta->ht_cap;
2198
2199         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
2200                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
2201         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
2202                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
2203
2204         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
2205         iwl_conf->max_amsdu_size =
2206                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
2207
2208         iwl_conf->supported_chan_width =
2209                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
2210
2211         /*
2212          * XXX: The HT configuration needs to be moved into iwl_mac_config()
2213          *      to be done there correctly.
2214          */
2215
2216         iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
2217         if (conf_is_ht40_minus(&priv->hw->conf))
2218                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2219         else if (conf_is_ht40_plus(&priv->hw->conf))
2220                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2221
2222         /* If no above or below channel supplied disable FAT channel */
2223         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
2224             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
2225                 iwl_conf->supported_chan_width = 0;
2226
2227         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
2228
2229         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
2230
2231         iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
2232         iwl_conf->ht_protection =
2233                 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2234         iwl_conf->non_GF_STA_present =
2235                 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2236
2237         rcu_read_unlock();
2238
2239         IWL_DEBUG_MAC80211(priv, "leave\n");
2240 }
2241
2242 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2243 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2244                                      struct ieee80211_vif *vif,
2245                                      struct ieee80211_bss_conf *bss_conf,
2246                                      u32 changes)
2247 {
2248         struct iwl_priv *priv = hw->priv;
2249         int ret;
2250
2251         IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2252
2253         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2254                 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2255                                    bss_conf->use_short_preamble);
2256                 if (bss_conf->use_short_preamble)
2257                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2258                 else
2259                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2260         }
2261
2262         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2263                 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2264                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2265                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2266                 else
2267                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2268         }
2269
2270         if (changes & BSS_CHANGED_HT) {
2271                 iwl_ht_conf(priv, bss_conf);
2272
2273                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2274                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2275         }
2276
2277         if (changes & BSS_CHANGED_ASSOC) {
2278                 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2279                 /* This should never happen as this function should
2280                  * never be called from interrupt context. */
2281                 if (WARN_ON_ONCE(in_interrupt()))
2282                         return;
2283                 if (bss_conf->assoc) {
2284                         priv->assoc_id = bss_conf->aid;
2285                         priv->beacon_int = bss_conf->beacon_int;
2286                         priv->power_data.dtim_period = bss_conf->dtim_period;
2287                         priv->timestamp = bss_conf->timestamp;
2288                         priv->assoc_capability = bss_conf->assoc_capability;
2289
2290                         /* we have just associated, don't start scan too early
2291                          * leave time for EAPOL exchange to complete
2292                          */
2293                         priv->next_scan_jiffies = jiffies +
2294                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2295                         mutex_lock(&priv->mutex);
2296                         priv->cfg->ops->lib->post_associate(priv);
2297                         mutex_unlock(&priv->mutex);
2298                 } else {
2299                         priv->assoc_id = 0;
2300                         IWL_DEBUG_MAC80211(priv, "DISASSOC %d\n", bss_conf->assoc);
2301                 }
2302         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2303                         IWL_DEBUG_MAC80211(priv, "Associated Changes %d\n", changes);
2304                         ret = iwl_send_rxon_assoc(priv);
2305                         if (!ret)
2306                                 /* Sync active_rxon with latest change. */
2307                                 memcpy((void *)&priv->active_rxon,
2308                                         &priv->staging_rxon,
2309                                         sizeof(struct iwl_rxon_cmd));
2310         }
2311
2312 }
2313 EXPORT_SYMBOL(iwl_bss_info_changed);
2314
2315 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2316 {
2317         struct iwl_priv *priv = hw->priv;
2318         unsigned long flags;
2319         __le64 timestamp;
2320
2321         IWL_DEBUG_MAC80211(priv, "enter\n");
2322
2323         if (!iwl_is_ready_rf(priv)) {
2324                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2325                 return -EIO;
2326         }
2327
2328         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2329                 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2330                 return -EIO;
2331         }
2332
2333         spin_lock_irqsave(&priv->lock, flags);
2334
2335         if (priv->ibss_beacon)
2336                 dev_kfree_skb(priv->ibss_beacon);
2337
2338         priv->ibss_beacon = skb;
2339
2340         priv->assoc_id = 0;
2341         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2342         priv->timestamp = le64_to_cpu(timestamp);
2343
2344         IWL_DEBUG_MAC80211(priv, "leave\n");
2345         spin_unlock_irqrestore(&priv->lock, flags);
2346
2347         iwl_reset_qos(priv);
2348
2349         priv->cfg->ops->lib->post_associate(priv);
2350
2351
2352         return 0;
2353 }
2354 EXPORT_SYMBOL(iwl_mac_beacon_update);
2355
2356 int iwl_set_mode(struct iwl_priv *priv, int mode)
2357 {
2358         if (mode == NL80211_IFTYPE_ADHOC) {
2359                 const struct iwl_channel_info *ch_info;
2360
2361                 ch_info = iwl_get_channel_info(priv,
2362                         priv->band,
2363                         le16_to_cpu(priv->staging_rxon.channel));
2364
2365                 if (!ch_info || !is_channel_ibss(ch_info)) {
2366                         IWL_ERR(priv, "channel %d not IBSS channel\n",
2367                                   le16_to_cpu(priv->staging_rxon.channel));
2368                         return -EINVAL;
2369                 }
2370         }
2371
2372         iwl_connection_init_rx_config(priv, mode);
2373
2374         if (priv->cfg->ops->hcmd->set_rxon_chain)
2375                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2376
2377         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2378
2379         priv->cfg->ops->smgmt->clear_station_table(priv);
2380
2381         /* dont commit rxon if rf-kill is on*/
2382         if (!iwl_is_ready_rf(priv))
2383                 return -EAGAIN;
2384
2385         cancel_delayed_work(&priv->scan_check);
2386         if (iwl_scan_cancel_timeout(priv, 100)) {
2387                 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2388                 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2389                 return -EAGAIN;
2390         }
2391
2392         iwlcore_commit_rxon(priv);
2393
2394         return 0;
2395 }
2396 EXPORT_SYMBOL(iwl_set_mode);
2397
2398 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2399                                  struct ieee80211_if_init_conf *conf)
2400 {
2401         struct iwl_priv *priv = hw->priv;
2402         unsigned long flags;
2403
2404         IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2405
2406         if (priv->vif) {
2407                 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2408                 return -EOPNOTSUPP;
2409         }
2410
2411         spin_lock_irqsave(&priv->lock, flags);
2412         priv->vif = conf->vif;
2413         priv->iw_mode = conf->type;
2414
2415         spin_unlock_irqrestore(&priv->lock, flags);
2416
2417         mutex_lock(&priv->mutex);
2418
2419         if (conf->mac_addr) {
2420                 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2421                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2422         }
2423
2424         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2425                 /* we are not ready, will run again when ready */
2426                 set_bit(STATUS_MODE_PENDING, &priv->status);
2427
2428         mutex_unlock(&priv->mutex);
2429
2430         IWL_DEBUG_MAC80211(priv, "leave\n");
2431         return 0;
2432 }
2433 EXPORT_SYMBOL(iwl_mac_add_interface);
2434
2435 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2436                                      struct ieee80211_if_init_conf *conf)
2437 {
2438         struct iwl_priv *priv = hw->priv;
2439
2440         IWL_DEBUG_MAC80211(priv, "enter\n");
2441
2442         mutex_lock(&priv->mutex);
2443
2444         if (iwl_is_ready_rf(priv)) {
2445                 iwl_scan_cancel_timeout(priv, 100);
2446                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2447                 iwlcore_commit_rxon(priv);
2448         }
2449         if (priv->vif == conf->vif) {
2450                 priv->vif = NULL;
2451                 memset(priv->bssid, 0, ETH_ALEN);
2452         }
2453         mutex_unlock(&priv->mutex);
2454
2455         IWL_DEBUG_MAC80211(priv, "leave\n");
2456
2457 }
2458 EXPORT_SYMBOL(iwl_mac_remove_interface);
2459
2460 /**
2461  * iwl_mac_config - mac80211 config callback
2462  *
2463  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2464  * be set inappropriately and the driver currently sets the hardware up to
2465  * use it whenever needed.
2466  */
2467 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2468 {
2469         struct iwl_priv *priv = hw->priv;
2470         const struct iwl_channel_info *ch_info;
2471         struct ieee80211_conf *conf = &hw->conf;
2472         unsigned long flags = 0;
2473         int ret = 0;
2474         u16 ch;
2475         int scan_active = 0;
2476
2477         mutex_lock(&priv->mutex);
2478
2479         if (!iwl_is_ready(priv)) {
2480                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2481                 ret = -EIO;
2482                 goto out;
2483         }
2484
2485         IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2486                                         conf->channel->hw_value, changed);
2487
2488         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2489                         test_bit(STATUS_SCANNING, &priv->status))) {
2490                 scan_active = 1;
2491                 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2492         }
2493
2494
2495         /* during scanning mac80211 will delay channel setting until
2496          * scan finish with changed = 0
2497          */
2498         if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2499                 if (scan_active)
2500                         goto set_ch_out;
2501
2502                 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2503                 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2504                 if (!is_channel_valid(ch_info)) {
2505                         IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2506                         ret = -EINVAL;
2507                         goto set_ch_out;
2508                 }
2509
2510                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2511                         !is_channel_ibss(ch_info)) {
2512                         IWL_ERR(priv, "channel %d in band %d not "
2513                                 "IBSS channel\n",
2514                                 conf->channel->hw_value, conf->channel->band);
2515                         ret = -EINVAL;
2516                         goto set_ch_out;
2517                 }
2518
2519                 priv->current_ht_config.is_ht = conf_is_ht(conf);
2520
2521                 spin_lock_irqsave(&priv->lock, flags);
2522
2523
2524                 /* if we are switching from ht to 2.4 clear flags
2525                  * from any ht related info since 2.4 does not
2526                  * support ht */
2527                 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2528                         priv->staging_rxon.flags = 0;
2529
2530                 iwl_set_rxon_channel(priv, conf->channel);
2531
2532                 iwl_set_flags_for_band(priv, conf->channel->band);
2533                 spin_unlock_irqrestore(&priv->lock, flags);
2534  set_ch_out:
2535                 /* The list of supported rates and rate mask can be different
2536                  * for each band; since the band may have changed, reset
2537                  * the rate mask to what mac80211 lists */
2538                 iwl_set_rate(priv);
2539         }
2540
2541         if (changed & IEEE80211_CONF_CHANGE_PS) {
2542                 if (conf->flags & IEEE80211_CONF_PS)
2543                         ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2544                 else
2545                         ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2546                 if (ret)
2547                         IWL_DEBUG_MAC80211(priv, "Error setting power level\n");
2548
2549         }
2550
2551         if (changed & IEEE80211_CONF_CHANGE_POWER) {
2552                 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2553                         priv->tx_power_user_lmt, conf->power_level);
2554
2555                 iwl_set_tx_power(priv, conf->power_level, false);
2556         }
2557
2558         /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2559         if (priv->cfg->ops->hcmd->set_rxon_chain)
2560                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2561
2562         if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
2563                 if (conf->radio_enabled &&
2564                         iwl_radio_kill_sw_enable_radio(priv)) {
2565                         IWL_DEBUG_MAC80211(priv, "leave - RF-KILL - "
2566                                                 "waiting for uCode\n");
2567                         goto out;
2568                 }
2569
2570                 if (!conf->radio_enabled)
2571                         iwl_radio_kill_sw_disable_radio(priv);
2572         }
2573
2574         if (!conf->radio_enabled) {
2575                 IWL_DEBUG_MAC80211(priv, "leave - radio disabled\n");
2576                 goto out;
2577         }
2578
2579         if (scan_active)
2580                 goto out;
2581
2582         if (memcmp(&priv->active_rxon,
2583                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2584                 iwlcore_commit_rxon(priv);
2585         else
2586                 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2587
2588
2589 out:
2590         IWL_DEBUG_MAC80211(priv, "leave\n");
2591         mutex_unlock(&priv->mutex);
2592         return ret;
2593 }
2594 EXPORT_SYMBOL(iwl_mac_config);
2595
2596 int iwl_mac_config_interface(struct ieee80211_hw *hw,
2597                                         struct ieee80211_vif *vif,
2598                                     struct ieee80211_if_conf *conf)
2599 {
2600         struct iwl_priv *priv = hw->priv;
2601         int rc;
2602
2603         if (conf == NULL)
2604                 return -EIO;
2605
2606         if (priv->vif != vif) {
2607                 IWL_DEBUG_MAC80211(priv, "leave - priv->vif != vif\n");
2608                 return 0;
2609         }
2610
2611         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2612             conf->changed & IEEE80211_IFCC_BEACON) {
2613                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2614                 if (!beacon)
2615                         return -ENOMEM;
2616                 mutex_lock(&priv->mutex);
2617                 rc = iwl_mac_beacon_update(hw, beacon);
2618                 mutex_unlock(&priv->mutex);
2619                 if (rc)
2620                         return rc;
2621         }
2622
2623         if (!iwl_is_alive(priv))
2624                 return -EAGAIN;
2625
2626         mutex_lock(&priv->mutex);
2627
2628         if (conf->bssid)
2629                 IWL_DEBUG_MAC80211(priv, "bssid: %pM\n", conf->bssid);
2630
2631 /*
2632  * very dubious code was here; the probe filtering flag is never set:
2633  *
2634         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2635             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2636  */
2637
2638         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2639                 if (!conf->bssid) {
2640                         conf->bssid = priv->mac_addr;
2641                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2642                         IWL_DEBUG_MAC80211(priv, "bssid was set to: %pM\n",
2643                                            conf->bssid);
2644                 }
2645                 if (priv->ibss_beacon)
2646                         dev_kfree_skb(priv->ibss_beacon);
2647
2648                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2649         }
2650
2651         if (iwl_is_rfkill(priv))
2652                 goto done;
2653
2654         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2655             !is_multicast_ether_addr(conf->bssid)) {
2656                 /* If there is currently a HW scan going on in the background
2657                  * then we need to cancel it else the RXON below will fail. */
2658                 if (iwl_scan_cancel_timeout(priv, 100)) {
2659                         IWL_WARN(priv, "Aborted scan still in progress "
2660                                     "after 100ms\n");
2661                         IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2662                         mutex_unlock(&priv->mutex);
2663                         return -EAGAIN;
2664                 }
2665                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2666
2667                 /* TODO: Audit driver for usage of these members and see
2668                  * if mac80211 deprecates them (priv->bssid looks like it
2669                  * shouldn't be there, but I haven't scanned the IBSS code
2670                  * to verify) - jpk */
2671                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2672
2673                 if (priv->iw_mode == NL80211_IFTYPE_AP)
2674                         iwlcore_config_ap(priv);
2675                 else {
2676                         rc = iwlcore_commit_rxon(priv);
2677                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2678                                 iwl_rxon_add_station(
2679                                         priv, priv->active_rxon.bssid_addr, 1);
2680                 }
2681
2682         } else {
2683                 iwl_scan_cancel_timeout(priv, 100);
2684                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2685                 iwlcore_commit_rxon(priv);
2686         }
2687
2688  done:
2689         IWL_DEBUG_MAC80211(priv, "leave\n");
2690         mutex_unlock(&priv->mutex);
2691
2692         return 0;
2693 }
2694 EXPORT_SYMBOL(iwl_mac_config_interface);
2695
2696 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2697                          struct ieee80211_tx_queue_stats *stats)
2698 {
2699         struct iwl_priv *priv = hw->priv;
2700         int i, avail;
2701         struct iwl_tx_queue *txq;
2702         struct iwl_queue *q;
2703         unsigned long flags;
2704
2705         IWL_DEBUG_MAC80211(priv, "enter\n");
2706
2707         if (!iwl_is_ready_rf(priv)) {
2708                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2709                 return -EIO;
2710         }
2711
2712         spin_lock_irqsave(&priv->lock, flags);
2713
2714         for (i = 0; i < AC_NUM; i++) {
2715                 txq = &priv->txq[i];
2716                 q = &txq->q;
2717                 avail = iwl_queue_space(q);
2718
2719                 stats[i].len = q->n_window - avail;
2720                 stats[i].limit = q->n_window - q->high_mark;
2721                 stats[i].count = q->n_window;
2722
2723         }
2724         spin_unlock_irqrestore(&priv->lock, flags);
2725
2726         IWL_DEBUG_MAC80211(priv, "leave\n");
2727
2728         return 0;
2729 }
2730 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2731
2732 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2733 {
2734         struct iwl_priv *priv = hw->priv;
2735         unsigned long flags;
2736
2737         mutex_lock(&priv->mutex);
2738         IWL_DEBUG_MAC80211(priv, "enter\n");
2739
2740         spin_lock_irqsave(&priv->lock, flags);
2741         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
2742         spin_unlock_irqrestore(&priv->lock, flags);
2743
2744         iwl_reset_qos(priv);
2745
2746         spin_lock_irqsave(&priv->lock, flags);
2747         priv->assoc_id = 0;
2748         priv->assoc_capability = 0;
2749         priv->assoc_station_added = 0;
2750
2751         /* new association get rid of ibss beacon skb */
2752         if (priv->ibss_beacon)
2753                 dev_kfree_skb(priv->ibss_beacon);
2754
2755         priv->ibss_beacon = NULL;
2756
2757         priv->beacon_int = priv->hw->conf.beacon_int;
2758         priv->timestamp = 0;
2759         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2760                 priv->beacon_int = 0;
2761
2762         spin_unlock_irqrestore(&priv->lock, flags);
2763
2764         if (!iwl_is_ready_rf(priv)) {
2765                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2766                 mutex_unlock(&priv->mutex);
2767                 return;
2768         }
2769
2770         /* we are restarting association process
2771          * clear RXON_FILTER_ASSOC_MSK bit
2772          */
2773         if (priv->iw_mode != NL80211_IFTYPE_AP) {
2774                 iwl_scan_cancel_timeout(priv, 100);
2775                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2776                 iwlcore_commit_rxon(priv);
2777         }
2778
2779         iwl_power_update_mode(priv, 0);
2780
2781         /* Per mac80211.h: This is only used in IBSS mode... */
2782         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2783
2784                 /* switch to CAM during association period.
2785                  * the ucode will block any association/authentication
2786                  * frome during assiciation period if it can not hear
2787                  * the AP because of PM. the timer enable PM back is
2788                  * association do not complete
2789                  */
2790                 if (priv->hw->conf.channel->flags &
2791                     (IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_RADAR))
2792                                 iwl_power_disable_management(priv, 3000);
2793
2794                 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2795                 mutex_unlock(&priv->mutex);
2796                 return;
2797         }
2798
2799         iwl_set_rate(priv);
2800
2801         mutex_unlock(&priv->mutex);
2802
2803         IWL_DEBUG_MAC80211(priv, "leave\n");
2804 }
2805 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2806
2807 #ifdef CONFIG_PM
2808
2809 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
2810 {
2811         struct iwl_priv *priv = pci_get_drvdata(pdev);
2812
2813         /*
2814          * This function is called when system goes into suspend state
2815          * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
2816          * first but since iwl_mac_stop() has no knowledge of who the caller is,
2817          * it will not call apm_ops.stop() to stop the DMA operation.
2818          * Calling apm_ops.stop here to make sure we stop the DMA.
2819          */
2820         priv->cfg->ops->lib->apm_ops.stop(priv);
2821
2822         pci_save_state(pdev);
2823         pci_disable_device(pdev);
2824         pci_set_power_state(pdev, PCI_D3hot);
2825
2826         return 0;
2827 }
2828 EXPORT_SYMBOL(iwl_pci_suspend);
2829
2830 int iwl_pci_resume(struct pci_dev *pdev)
2831 {
2832         struct iwl_priv *priv = pci_get_drvdata(pdev);
2833         int ret;
2834
2835         pci_set_power_state(pdev, PCI_D0);
2836         ret = pci_enable_device(pdev);
2837         if (ret)
2838                 return ret;
2839         pci_restore_state(pdev);
2840         iwl_enable_interrupts(priv);
2841
2842         return 0;
2843 }
2844 EXPORT_SYMBOL(iwl_pci_resume);
2845
2846 #endif /* CONFIG_PM */