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

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 - 2009 Intel Corporation. All rights reserved.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of version 2 of the GNU General Public License as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  19  * USA
  20  *
  21  * The full GNU General Public License is included in this distribution
  22  * in the file called LICENSE.GPL.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *****************************************************************************/
  28
  29 #include <linux/kernel.h>
  30 #include <linux/module.h>
  31 #include <linux/etherdevice.h>
  32 #include <net/mac80211.h>
  33
  34 #include "iwl-eeprom.h"
  35 #include "iwl-dev.h" /* FIXME: remove */
  36 #include "iwl-debug.h"
  37 #include "iwl-core.h"
  38 #include "iwl-io.h"
  39 #include "iwl-power.h"
  40 #include "iwl-sta.h"
  41 #include "iwl-helpers.h"
  42
  43
  44 MODULE_DESCRIPTION("iwl core");
  45 MODULE_VERSION(IWLWIFI_VERSION);
  46 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  47 MODULE_LICENSE("GPL");
  48
  49 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np)    \
  50         [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,      \
  51                                     IWL_RATE_SISO_##s##M_PLCP, \
  52                                     IWL_RATE_MIMO2_##s##M_PLCP,\
  53                                     IWL_RATE_MIMO3_##s##M_PLCP,\
  54                                     IWL_RATE_##r##M_IEEE,      \
  55                                     IWL_RATE_##ip##M_INDEX,    \
  56                                     IWL_RATE_##in##M_INDEX,    \
  57                                     IWL_RATE_##rp##M_INDEX,    \
  58                                     IWL_RATE_##rn##M_INDEX,    \
  59                                     IWL_RATE_##pp##M_INDEX,    \
  60                                     IWL_RATE_##np##M_INDEX }
  61
  62 u32 iwl_debug_level;
  63 EXPORT_SYMBOL(iwl_debug_level);
  64
  65 static irqreturn_t iwl_isr(int irq, void *data);
  66
  67 /*
  68  * Parameter order:
  69  *   rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
  70  *
  71  * If there isn't a valid next or previous rate then INV is used which
  72  * maps to IWL_RATE_INVALID
  73  *
  74  */
  75 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
  76         IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2),    /*  1mbps */
  77         IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5),          /*  2mbps */
  78         IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
  79         IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18),      /* 11mbps */
  80         IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
  81         IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11),       /*  9mbps */
  82         IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
  83         IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
  84         IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
  85         IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
  86         IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
  87         IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
  88         IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
  89         /* FIXME:RS:          ^^    should be INV (legacy) */
  90 };
  91 EXPORT_SYMBOL(iwl_rates);
  92
  93 /**
  94  * translate ucode response to mac80211 tx status control values
  95  */
  96 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
  97                                   struct ieee80211_tx_info *info)
  98 {
  99         int rate_index;
 100         struct ieee80211_tx_rate *r = &info->control.rates[0];
 101
 102         info->antenna_sel_tx =
 103                 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
 104         if (rate_n_flags & RATE_MCS_HT_MSK)
 105                 r->flags |= IEEE80211_TX_RC_MCS;
 106         if (rate_n_flags & RATE_MCS_GF_MSK)
 107                 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
 108         if (rate_n_flags & RATE_MCS_HT40_MSK)
 109                 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
 110         if (rate_n_flags & RATE_MCS_DUP_MSK)
 111                 r->flags |= IEEE80211_TX_RC_DUP_DATA;
 112         if (rate_n_flags & RATE_MCS_SGI_MSK)
 113                 r->flags |= IEEE80211_TX_RC_SHORT_GI;
 114         rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
 115         if (info->band == IEEE80211_BAND_5GHZ)
 116                 rate_index -= IWL_FIRST_OFDM_RATE;
 117         r->idx = rate_index;
 118 }
 119 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
 120
 121 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
 122 {
 123         int idx = 0;
 124
 125         /* HT rate format */
 126         if (rate_n_flags & RATE_MCS_HT_MSK) {
 127                 idx = (rate_n_flags & 0xff);
 128
 129                 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
 130                         idx = idx - IWL_RATE_MIMO3_6M_PLCP;
 131                 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
 132                         idx = idx - IWL_RATE_MIMO2_6M_PLCP;
 133
 134                 idx += IWL_FIRST_OFDM_RATE;
 135                 /* skip 9M not supported in ht*/
 136                 if (idx >= IWL_RATE_9M_INDEX)
 137                         idx += 1;
 138                 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
 139                         return idx;
 140
 141         /* legacy rate format, search for match in table */
 142         } else {
 143                 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
 144                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 145                                 return idx;
 146         }
 147
 148         return -1;
 149 }
 150 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
 151
 152 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
 153 {
 154         int i;
 155         u8 ind = ant;
 156         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 157                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 158                 if (priv->hw_params.valid_tx_ant & BIT(ind))
 159                         return ind;
 160         }
 161         return ant;
 162 }
 163
 164 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 165 EXPORT_SYMBOL(iwl_bcast_addr);
 166
 167
 168 /* This function both allocates and initializes hw and priv. */
 169 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
 170                 struct ieee80211_ops *hw_ops)
 171 {
 172         struct iwl_priv *priv;
 173
 174         /* mac80211 allocates memory for this device instance, including
 175          *   space for this driver's private structure */
 176         struct ieee80211_hw *hw =
 177                 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
 178         if (hw == NULL) {
 179                 printk(KERN_ERR "%s: Can not allocate network device\n",
 180                        cfg->name);
 181                 goto out;
 182         }
 183
 184         priv = hw->priv;
 185         priv->hw = hw;
 186
 187 out:
 188         return hw;
 189 }
 190 EXPORT_SYMBOL(iwl_alloc_all);
 191
 192 void iwl_hw_detect(struct iwl_priv *priv)
 193 {
 194         priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
 195         priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
 196         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
 197 }
 198 EXPORT_SYMBOL(iwl_hw_detect);
 199
 200 int iwl_hw_nic_init(struct iwl_priv *priv)
 201 {
 202         unsigned long flags;
 203         struct iwl_rx_queue *rxq = &priv->rxq;
 204         int ret;
 205
 206         /* nic_init */
 207         spin_lock_irqsave(&priv->lock, flags);
 208         priv->cfg->ops->lib->apm_ops.init(priv);
 209         iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
 210         spin_unlock_irqrestore(&priv->lock, flags);
 211
 212         ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
 213
 214         priv->cfg->ops->lib->apm_ops.config(priv);
 215
 216         /* Allocate the RX queue, or reset if it is already allocated */
 217         if (!rxq->bd) {
 218                 ret = iwl_rx_queue_alloc(priv);
 219                 if (ret) {
 220                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
 221                         return -ENOMEM;
 222                 }
 223         } else
 224                 iwl_rx_queue_reset(priv, rxq);
 225
 226         iwl_rx_replenish(priv);
 227
 228         iwl_rx_init(priv, rxq);
 229
 230         spin_lock_irqsave(&priv->lock, flags);
 231
 232         rxq->need_update = 1;
 233         iwl_rx_queue_update_write_ptr(priv, rxq);
 234
 235         spin_unlock_irqrestore(&priv->lock, flags);
 236
 237         /* Allocate and init all Tx and Command queues */
 238         ret = iwl_txq_ctx_reset(priv);
 239         if (ret)
 240                 return ret;
 241
 242         set_bit(STATUS_INIT, &priv->status);
 243
 244         return 0;
 245 }
 246 EXPORT_SYMBOL(iwl_hw_nic_init);
 247
 248 /*
 249  * QoS  support
 250 */
 251 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 252 {
 253         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 254                 return;
 255
 256         priv->qos_data.def_qos_parm.qos_flags = 0;
 257
 258         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 259             !priv->qos_data.qos_cap.q_AP.txop_request)
 260                 priv->qos_data.def_qos_parm.qos_flags |=
 261                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 262         if (priv->qos_data.qos_active)
 263                 priv->qos_data.def_qos_parm.qos_flags |=
 264                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 265
 266         if (priv->current_ht_config.is_ht)
 267                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 268
 269         if (force || iwl_is_associated(priv)) {
 270                 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 271                                 priv->qos_data.qos_active,
 272                                 priv->qos_data.def_qos_parm.qos_flags);
 273
 274                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 275                                        sizeof(struct iwl_qosparam_cmd),
 276                                        &priv->qos_data.def_qos_parm, NULL);
 277         }
 278 }
 279 EXPORT_SYMBOL(iwl_activate_qos);
 280
 281 /*
 282  * AC        CWmin         CW max      AIFSN      TXOP Limit    TXOP Limit
 283  *                                              (802.11b)      (802.11a/g)
 284  * AC_BK      15            1023        7           0               0
 285  * AC_BE      15            1023        3           0               0
 286  * AC_VI       7              15        2          6.016ms       3.008ms
 287  * AC_VO       3               7        2          3.264ms       1.504ms
 288  */
 289 void iwl_reset_qos(struct iwl_priv *priv)
 290 {
 291         u16 cw_min = 15;
 292         u16 cw_max = 1023;
 293         u8 aifs = 2;
 294         bool is_legacy = false;
 295         unsigned long flags;
 296         int i;
 297
 298         spin_lock_irqsave(&priv->lock, flags);
 299         /* QoS always active in AP and ADHOC mode
 300          * In STA mode wait for association
 301          */
 302         if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
 303             priv->iw_mode == NL80211_IFTYPE_AP)
 304                 priv->qos_data.qos_active = 1;
 305         else
 306                 priv->qos_data.qos_active = 0;
 307
 308         /* check for legacy mode */
 309         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
 310             (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
 311             (priv->iw_mode == NL80211_IFTYPE_STATION &&
 312             (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
 313                 cw_min = 31;
 314                 is_legacy = 1;
 315         }
 316
 317         if (priv->qos_data.qos_active)
 318                 aifs = 3;
 319
 320         /* AC_BE */
 321         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
 322         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
 323         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
 324         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
 325         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
 326
 327         if (priv->qos_data.qos_active) {
 328                 /* AC_BK */
 329                 i = 1;
 330                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
 331                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
 332                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
 333                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
 334                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 335
 336                 /* AC_VI */
 337                 i = 2;
 338                 priv->qos_data.def_qos_parm.ac[i].cw_min =
 339                         cpu_to_le16((cw_min + 1) / 2 - 1);
 340                 priv->qos_data.def_qos_parm.ac[i].cw_max =
 341                         cpu_to_le16(cw_min);
 342                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
 343                 if (is_legacy)
 344                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 345                                 cpu_to_le16(6016);
 346                 else
 347                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 348                                 cpu_to_le16(3008);
 349                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 350
 351                 /* AC_VO */
 352                 i = 3;
 353                 priv->qos_data.def_qos_parm.ac[i].cw_min =
 354                         cpu_to_le16((cw_min + 1) / 4 - 1);
 355                 priv->qos_data.def_qos_parm.ac[i].cw_max =
 356                         cpu_to_le16((cw_min + 1) / 2 - 1);
 357                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
 358                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 359                 if (is_legacy)
 360                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 361                                 cpu_to_le16(3264);
 362                 else
 363                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 364                                 cpu_to_le16(1504);
 365         } else {
 366                 for (i = 1; i < 4; i++) {
 367                         priv->qos_data.def_qos_parm.ac[i].cw_min =
 368                                 cpu_to_le16(cw_min);
 369                         priv->qos_data.def_qos_parm.ac[i].cw_max =
 370                                 cpu_to_le16(cw_max);
 371                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
 372                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
 373                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 374                 }
 375         }
 376         IWL_DEBUG_QOS(priv, "set QoS to default \n");
 377
 378         spin_unlock_irqrestore(&priv->lock, flags);
 379 }
 380 EXPORT_SYMBOL(iwl_reset_qos);
 381
 382 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
 383 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
 384 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
 385                               struct ieee80211_sta_ht_cap *ht_info,
 386                               enum ieee80211_band band)
 387 {
 388         u16 max_bit_rate = 0;
 389         u8 rx_chains_num = priv->hw_params.rx_chains_num;
 390         u8 tx_chains_num = priv->hw_params.tx_chains_num;
 391
 392         ht_info->cap = 0;
 393         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
 394
 395         ht_info->ht_supported = true;
 396
 397         ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
 398         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
 399         ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
 400                              (WLAN_HT_CAP_SM_PS_DISABLED << 2));
 401
 402         max_bit_rate = MAX_BIT_RATE_20_MHZ;
 403         if (priv->hw_params.ht40_channel & BIT(band)) {
 404                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 405                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
 406                 ht_info->mcs.rx_mask[4] = 0x01;
 407                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
 408         }
 409
 410         if (priv->cfg->mod_params->amsdu_size_8K)
 411                 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
 412
 413         ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
 414         ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
 415
 416         ht_info->mcs.rx_mask[0] = 0xFF;
 417         if (rx_chains_num >= 2)
 418                 ht_info->mcs.rx_mask[1] = 0xFF;
 419         if (rx_chains_num >= 3)
 420                 ht_info->mcs.rx_mask[2] = 0xFF;
 421
 422         /* Highest supported Rx data rate */
 423         max_bit_rate *= rx_chains_num;
 424         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
 425         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
 426
 427         /* Tx MCS capabilities */
 428         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 429         if (tx_chains_num != rx_chains_num) {
 430                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
 431                 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
 432                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
 433         }
 434 }
 435
 436 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
 437                               struct ieee80211_rate *rates)
 438 {
 439         int i;
 440
 441         for (i = 0; i < IWL_RATE_COUNT; i++) {
 442                 rates[i].bitrate = iwl_rates[i].ieee * 5;
 443                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
 444                 rates[i].hw_value_short = i;
 445                 rates[i].flags = 0;
 446                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
 447                         /*
 448                          * If CCK != 1M then set short preamble rate flag.
 449                          */
 450                         rates[i].flags |=
 451                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
 452                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
 453                 }
 454         }
 455 }
 456
 457
 458 /**
 459  * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
 460  */
 461 int iwlcore_init_geos(struct iwl_priv *priv)
 462 {
 463         struct iwl_channel_info *ch;
 464         struct ieee80211_supported_band *sband;
 465         struct ieee80211_channel *channels;
 466         struct ieee80211_channel *geo_ch;
 467         struct ieee80211_rate *rates;
 468         int i = 0;
 469
 470         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
 471             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
 472                 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
 473                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
 474                 return 0;
 475         }
 476
 477         channels = kzalloc(sizeof(struct ieee80211_channel) *
 478                            priv->channel_count, GFP_KERNEL);
 479         if (!channels)
 480                 return -ENOMEM;
 481
 482         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
 483                         GFP_KERNEL);
 484         if (!rates) {
 485                 kfree(channels);
 486                 return -ENOMEM;
 487         }
 488
 489         /* 5.2GHz channels start after the 2.4GHz channels */
 490         sband = &priv->bands[IEEE80211_BAND_5GHZ];
 491         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
 492         /* just OFDM */
 493         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
 494         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
 495
 496         if (priv->cfg->sku & IWL_SKU_N)
 497                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
 498                                          IEEE80211_BAND_5GHZ);
 499
 500         sband = &priv->bands[IEEE80211_BAND_2GHZ];
 501         sband->channels = channels;
 502         /* OFDM & CCK */
 503         sband->bitrates = rates;
 504         sband->n_bitrates = IWL_RATE_COUNT;
 505
 506         if (priv->cfg->sku & IWL_SKU_N)
 507                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
 508                                          IEEE80211_BAND_2GHZ);
 509
 510         priv->ieee_channels = channels;
 511         priv->ieee_rates = rates;
 512
 513         for (i = 0;  i < priv->channel_count; i++) {
 514                 ch = &priv->channel_info[i];
 515
 516                 /* FIXME: might be removed if scan is OK */
 517                 if (!is_channel_valid(ch))
 518                         continue;
 519
 520                 if (is_channel_a_band(ch))
 521                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
 522                 else
 523                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
 524
 525                 geo_ch = &sband->channels[sband->n_channels++];
 526
 527                 geo_ch->center_freq =
 528                                 ieee80211_channel_to_frequency(ch->channel);
 529                 geo_ch->max_power = ch->max_power_avg;
 530                 geo_ch->max_antenna_gain = 0xff;
 531                 geo_ch->hw_value = ch->channel;
 532
 533                 if (is_channel_valid(ch)) {
 534                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
 535                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
 536
 537                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
 538                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
 539
 540                         if (ch->flags & EEPROM_CHANNEL_RADAR)
 541                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
 542
 543                         geo_ch->flags |= ch->ht40_extension_channel;
 544
 545                         if (ch->max_power_avg > priv->tx_power_channel_lmt)
 546                                 priv->tx_power_channel_lmt = ch->max_power_avg;
 547                 } else {
 548                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
 549                 }
 550
 551                 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
 552                                 ch->channel, geo_ch->center_freq,
 553                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
 554                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
 555                                 "restricted" : "valid",
 556                                  geo_ch->flags);
 557         }
 558
 559         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
 560              priv->cfg->sku & IWL_SKU_A) {
 561                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
 562                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
 563                            priv->pci_dev->device,
 564                            priv->pci_dev->subsystem_device);
 565                 priv->cfg->sku &= ~IWL_SKU_A;
 566         }
 567
 568         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
 569                    priv->bands[IEEE80211_BAND_2GHZ].n_channels,
 570                    priv->bands[IEEE80211_BAND_5GHZ].n_channels);
 571
 572         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
 573
 574         return 0;
 575 }
 576 EXPORT_SYMBOL(iwlcore_init_geos);
 577
 578 /*
 579  * iwlcore_free_geos - undo allocations in iwlcore_init_geos
 580  */
 581 void iwlcore_free_geos(struct iwl_priv *priv)
 582 {
 583         kfree(priv->ieee_channels);
 584         kfree(priv->ieee_rates);
 585         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
 586 }
 587 EXPORT_SYMBOL(iwlcore_free_geos);
 588
 589 static bool is_single_rx_stream(struct iwl_priv *priv)
 590 {
 591         return !priv->current_ht_config.is_ht ||
 592                ((priv->current_ht_config.mcs.rx_mask[1] == 0) &&
 593                 (priv->current_ht_config.mcs.rx_mask[2] == 0));
 594 }
 595
 596 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
 597                                    enum ieee80211_band band,
 598                                    u16 channel, u8 extension_chan_offset)
 599 {
 600         const struct iwl_channel_info *ch_info;
 601
 602         ch_info = iwl_get_channel_info(priv, band, channel);
 603         if (!is_channel_valid(ch_info))
 604                 return 0;
 605
 606         if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
 607                 return !(ch_info->ht40_extension_channel &
 608                                         IEEE80211_CHAN_NO_HT40PLUS);
 609         else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
 610                 return !(ch_info->ht40_extension_channel &
 611                                         IEEE80211_CHAN_NO_HT40MINUS);
 612
 613         return 0;
 614 }
 615
 616 u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
 617                          struct ieee80211_sta_ht_cap *sta_ht_inf)
 618 {
 619         struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;
 620
 621         if ((!iwl_ht_conf->is_ht) ||
 622             (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ))
 623                 return 0;
 624
 625         /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
 626          * the bit will not set if it is pure 40MHz case
 627          */
 628         if (sta_ht_inf) {
 629                 if (!sta_ht_inf->ht_supported)
 630                         return 0;
 631         }
 632 #ifdef CONFIG_IWLWIFI_DEBUG
 633         if (priv->disable_ht40)
 634                 return 0;
 635 #endif
 636         return iwl_is_channel_extension(priv, priv->band,
 637                         le16_to_cpu(priv->staging_rxon.channel),
 638                         iwl_ht_conf->extension_chan_offset);
 639 }
 640 EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
 641
 642 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
 643 {
 644         u16 new_val = 0;
 645         u16 beacon_factor = 0;
 646
 647         beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
 648         new_val = beacon_val / beacon_factor;
 649
 650         if (!new_val)
 651                 new_val = max_beacon_val;
 652
 653         return new_val;
 654 }
 655
 656 void iwl_setup_rxon_timing(struct iwl_priv *priv)
 657 {
 658         u64 tsf;
 659         s32 interval_tm, rem;
 660         unsigned long flags;
 661         struct ieee80211_conf *conf = NULL;
 662         u16 beacon_int;
 663
 664         conf = ieee80211_get_hw_conf(priv->hw);
 665
 666         spin_lock_irqsave(&priv->lock, flags);
 667         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 668         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 669
 670         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 671                 beacon_int = priv->beacon_int;
 672                 priv->rxon_timing.atim_window = 0;
 673         } else {
 674                 beacon_int = priv->vif->bss_conf.beacon_int;
 675
 676                 /* TODO: we need to get atim_window from upper stack
 677                  * for now we set to 0 */
 678                 priv->rxon_timing.atim_window = 0;
 679         }
 680
 681         beacon_int = iwl_adjust_beacon_interval(beacon_int,
 682                                 priv->hw_params.max_beacon_itrvl * 1024);
 683         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 684
 685         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 686         interval_tm = beacon_int * 1024;
 687         rem = do_div(tsf, interval_tm);
 688         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 689
 690         spin_unlock_irqrestore(&priv->lock, flags);
 691         IWL_DEBUG_ASSOC(priv,
 692                         "beacon interval %d beacon timer %d beacon tim %d\n",
 693                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 694                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 695                         le16_to_cpu(priv->rxon_timing.atim_window));
 696 }
 697 EXPORT_SYMBOL(iwl_setup_rxon_timing);
 698
 699 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 700 {
 701         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 702
 703         if (hw_decrypt)
 704                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 705         else
 706                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 707
 708 }
 709 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
 710
 711 /**
 712  * iwl_check_rxon_cmd - validate RXON structure is valid
 713  *
 714  * NOTE:  This is really only useful during development and can eventually
 715  * be #ifdef'd out once the driver is stable and folks aren't actively
 716  * making changes
 717  */
 718 int iwl_check_rxon_cmd(struct iwl_priv *priv)
 719 {
 720         int error = 0;
 721         int counter = 1;
 722         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 723
 724         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 725                 error |= le32_to_cpu(rxon->flags &
 726                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 727                                  RXON_FLG_RADAR_DETECT_MSK));
 728                 if (error)
 729                         IWL_WARN(priv, "check 24G fields %d | %d\n",
 730                                     counter++, error);
 731         } else {
 732                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 733                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 734                 if (error)
 735                         IWL_WARN(priv, "check 52 fields %d | %d\n",
 736                                     counter++, error);
 737                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 738                 if (error)
 739                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
 740                                     counter++, error);
 741         }
 742         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 743         if (error)
 744                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
 745
 746         /* make sure basic rates 6Mbps and 1Mbps are supported */
 747         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 748                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 749         if (error)
 750                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
 751
 752         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 753         if (error)
 754                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
 755
 756         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 757                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 758         if (error)
 759                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
 760                             counter++, error);
 761
 762         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 763                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 764         if (error)
 765                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
 766                             counter++, error);
 767
 768         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 769                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 770         if (error)
 771                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
 772                             counter++, error);
 773
 774         if (error)
 775                 IWL_WARN(priv, "Tuning to channel %d\n",
 776                             le16_to_cpu(rxon->channel));
 777
 778         if (error) {
 779                 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
 780                 return -1;
 781         }
 782         return 0;
 783 }
 784 EXPORT_SYMBOL(iwl_check_rxon_cmd);
 785
 786 /**
 787  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 788  * @priv: staging_rxon is compared to active_rxon
 789  *
 790  * If the RXON structure is changing enough to require a new tune,
 791  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 792  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 793  */
 794 int iwl_full_rxon_required(struct iwl_priv *priv)
 795 {
 796
 797         /* These items are only settable from the full RXON command */
 798         if (!(iwl_is_associated(priv)) ||
 799             compare_ether_addr(priv->staging_rxon.bssid_addr,
 800                                priv->active_rxon.bssid_addr) ||
 801             compare_ether_addr(priv->staging_rxon.node_addr,
 802                                priv->active_rxon.node_addr) ||
 803             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 804                                priv->active_rxon.wlap_bssid_addr) ||
 805             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 806             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 807             (priv->staging_rxon.air_propagation !=
 808              priv->active_rxon.air_propagation) ||
 809             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 810              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 811             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 812              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 813             (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
 814              priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
 815             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 816                 return 1;
 817
 818         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 819          * be updated with the RXON_ASSOC command -- however only some
 820          * flag transitions are allowed using RXON_ASSOC */
 821
 822         /* Check if we are not switching bands */
 823         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 824             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 825                 return 1;
 826
 827         /* Check if we are switching association toggle */
 828         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 829                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 830                 return 1;
 831
 832         return 0;
 833 }
 834 EXPORT_SYMBOL(iwl_full_rxon_required);
 835
 836 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 837 {
 838         int i;
 839         int rate_mask;
 840
 841         /* Set rate mask*/
 842         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 843                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 844         else
 845                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 846
 847         /* Find lowest valid rate */
 848         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 849                                         i = iwl_rates[i].next_ieee) {
 850                 if (rate_mask & (1 << i))
 851                         return iwl_rates[i].plcp;
 852         }
 853
 854         /* No valid rate was found. Assign the lowest one */
 855         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 856                 return IWL_RATE_1M_PLCP;
 857         else
 858                 return IWL_RATE_6M_PLCP;
 859 }
 860 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
 861
 862 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
 863 {
 864         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 865
 866         if (!ht_info->is_ht) {
 867                 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
 868                         RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
 869                         RXON_FLG_HT40_PROT_MSK |
 870                         RXON_FLG_HT_PROT_MSK);
 871                 return;
 872         }
 873
 874         /* FIXME: if the definition of ht_protection changed, the "translation"
 875          * will be needed for rxon->flags
 876          */
 877         rxon->flags |= cpu_to_le32(ht_info->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
 878
 879         /* Set up channel bandwidth:
 880          * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
 881         /* clear the HT channel mode before set the mode */
 882         rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
 883                          RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
 884         if (iwl_is_ht40_tx_allowed(priv, NULL)) {
 885                 /* pure ht40 */
 886                 if (ht_info->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
 887                         rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
 888                         /* Note: control channel is opposite of extension channel */
 889                         switch (ht_info->extension_chan_offset) {
 890                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 891                                 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 892                                 break;
 893                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 894                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 895                                 break;
 896                         }
 897                 } else {
 898                         /* Note: control channel is opposite of extension channel */
 899                         switch (ht_info->extension_chan_offset) {
 900                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 901                                 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
 902                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
 903                                 break;
 904                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 905                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 906                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
 907                                 break;
 908                         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
 909                         default:
 910                                 /* channel location only valid if in Mixed mode */
 911                                 IWL_ERR(priv, "invalid extension channel offset\n");
 912                                 break;
 913                         }
 914                 }
 915         } else {
 916                 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
 917         }
 918
 919         if (priv->cfg->ops->hcmd->set_rxon_chain)
 920                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
 921
 922         IWL_DEBUG_ASSOC(priv, "supported HT rate 0x%X 0x%X 0x%X "
 923                         "rxon flags 0x%X operation mode :0x%X "
 924                         "extension channel offset 0x%x\n",
 925                         ht_info->mcs.rx_mask[0],
 926                         ht_info->mcs.rx_mask[1],
 927                         ht_info->mcs.rx_mask[2],
 928                         le32_to_cpu(rxon->flags), ht_info->ht_protection,
 929                         ht_info->extension_chan_offset);
 930         return;
 931 }
 932 EXPORT_SYMBOL(iwl_set_rxon_ht);
 933
 934 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 935 #define IWL_NUM_RX_CHAINS_SINGLE        2
 936 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 937 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 938
 939 /* Determine how many receiver/antenna chains to use.
 940  * More provides better reception via diversity.  Fewer saves power.
 941  * MIMO (dual stream) requires at least 2, but works better with 3.
 942  * This does not determine *which* chains to use, just how many.
 943  */
 944 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 945 {
 946         bool is_single = is_single_rx_stream(priv);
 947         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 948
 949         /* # of Rx chains to use when expecting MIMO. */
 950         if (is_single || (!is_cam && (priv->current_ht_config.sm_ps ==
 951                                                  WLAN_HT_CAP_SM_PS_STATIC)))
 952                 return IWL_NUM_RX_CHAINS_SINGLE;
 953         else
 954                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 955 }
 956
 957 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 958 {
 959         int idle_cnt;
 960         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 961         /* # Rx chains when idling and maybe trying to save power */
 962         switch (priv->current_ht_config.sm_ps) {
 963         case WLAN_HT_CAP_SM_PS_STATIC:
 964         case WLAN_HT_CAP_SM_PS_DYNAMIC:
 965                 idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
 966                                         IWL_NUM_IDLE_CHAINS_SINGLE;
 967                 break;
 968         case WLAN_HT_CAP_SM_PS_DISABLED:
 969                 idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
 970                 break;
 971         case WLAN_HT_CAP_SM_PS_INVALID:
 972         default:
 973                 IWL_ERR(priv, "invalid mimo ps mode %d\n",
 974                            priv->current_ht_config.sm_ps);
 975                 WARN_ON(1);
 976                 idle_cnt = -1;
 977                 break;
 978         }
 979         return idle_cnt;
 980 }
 981
 982 /* up to 4 chains */
 983 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
 984 {
 985         u8 res;
 986         res = (chain_bitmap & BIT(0)) >> 0;
 987         res += (chain_bitmap & BIT(1)) >> 1;
 988         res += (chain_bitmap & BIT(2)) >> 2;
 989         res += (chain_bitmap & BIT(4)) >> 4;
 990         return res;
 991 }
 992
 993 /**
 994  * iwl_is_monitor_mode - Determine if interface in monitor mode
 995  *
 996  * priv->iw_mode is set in add_interface, but add_interface is
 997  * never called for monitor mode. The only way mac80211 informs us about
 998  * monitor mode is through configuring filters (call to configure_filter).
 999  */
1000 bool iwl_is_monitor_mode(struct iwl_priv *priv)
1001 {
1002         return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1003 }
1004 EXPORT_SYMBOL(iwl_is_monitor_mode);
1005
1006 /**
1007  * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1008  *
1009  * Selects how many and which Rx receivers/antennas/chains to use.
1010  * This should not be used for scan command ... it puts data in wrong place.
1011  */
1012 void iwl_set_rxon_chain(struct iwl_priv *priv)
1013 {
1014         bool is_single = is_single_rx_stream(priv);
1015         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1016         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1017         u32 active_chains;
1018         u16 rx_chain;
1019
1020         /* Tell uCode which antennas are actually connected.
1021          * Before first association, we assume all antennas are connected.
1022          * Just after first association, iwl_chain_noise_calibration()
1023          *    checks which antennas actually *are* connected. */
1024          if (priv->chain_noise_data.active_chains)
1025                 active_chains = priv->chain_noise_data.active_chains;
1026         else
1027                 active_chains = priv->hw_params.valid_rx_ant;
1028
1029         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1030
1031         /* How many receivers should we use? */
1032         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1033         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1034
1035
1036         /* correct rx chain count according hw settings
1037          * and chain noise calibration
1038          */
1039         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1040         if (valid_rx_cnt < active_rx_cnt)
1041                 active_rx_cnt = valid_rx_cnt;
1042
1043         if (valid_rx_cnt < idle_rx_cnt)
1044                 idle_rx_cnt = valid_rx_cnt;
1045
1046         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1047         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
1048
1049         /* copied from 'iwl_bg_request_scan()' */
1050         /* Force use of chains B and C (0x6) for Rx for 4965
1051          * Avoid A (0x1) because of its off-channel reception on A-band.
1052          * MIMO is not used here, but value is required */
1053         if (iwl_is_monitor_mode(priv) &&
1054             !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1055             ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1056                 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1057                 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1058                 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1059                 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1060         }
1061
1062         priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1063
1064         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1065                 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1066         else
1067                 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1068
1069         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1070                         priv->staging_rxon.rx_chain,
1071                         active_rx_cnt, idle_rx_cnt);
1072
1073         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1074                 active_rx_cnt < idle_rx_cnt);
1075 }
1076 EXPORT_SYMBOL(iwl_set_rxon_chain);
1077
1078 /**
1079  * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1080  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1081  * @channel: Any channel valid for the requested phymode
1082
1083  * In addition to setting the staging RXON, priv->phymode is also set.
1084  *
1085  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
1086  * in the staging RXON flag structure based on the phymode
1087  */
1088 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1089 {
1090         enum ieee80211_band band = ch->band;
1091         u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1092
1093         if (!iwl_get_channel_info(priv, band, channel)) {
1094                 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1095                                channel, band);
1096                 return -EINVAL;
1097         }
1098
1099         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1100             (priv->band == band))
1101                 return 0;
1102
1103         priv->staging_rxon.channel = cpu_to_le16(channel);
1104         if (band == IEEE80211_BAND_5GHZ)
1105                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1106         else
1107                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1108
1109         priv->band = band;
1110
1111         IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1112
1113         return 0;
1114 }
1115 EXPORT_SYMBOL(iwl_set_rxon_channel);
1116
1117 void iwl_set_flags_for_band(struct iwl_priv *priv,
1118                             enum ieee80211_band band)
1119 {
1120         if (band == IEEE80211_BAND_5GHZ) {
1121                 priv->staging_rxon.flags &=
1122                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1123                       | RXON_FLG_CCK_MSK);
1124                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1125         } else {
1126                 /* Copied from iwl_post_associate() */
1127                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1128                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1129                 else
1130                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1131
1132                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1133                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1134
1135                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1136                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1137                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1138         }
1139 }
1140
1141 /*
1142  * initialize rxon structure with default values from eeprom
1143  */
1144 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1145 {
1146         const struct iwl_channel_info *ch_info;
1147
1148         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1149
1150         switch (mode) {
1151         case NL80211_IFTYPE_AP:
1152                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1153                 break;
1154
1155         case NL80211_IFTYPE_STATION:
1156                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1157                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1158                 break;
1159
1160         case NL80211_IFTYPE_ADHOC:
1161                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1162                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1163                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1164                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1165                 break;
1166
1167         default:
1168                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1169                 break;
1170         }
1171
1172 #if 0
1173         /* TODO:  Figure out when short_preamble would be set and cache from
1174          * that */
1175         if (!hw_to_local(priv->hw)->short_preamble)
1176                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1177         else
1178                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1179 #endif
1180
1181         ch_info = iwl_get_channel_info(priv, priv->band,
1182                                        le16_to_cpu(priv->active_rxon.channel));
1183
1184         if (!ch_info)
1185                 ch_info = &priv->channel_info[0];
1186
1187         /*
1188          * in some case A channels are all non IBSS
1189          * in this case force B/G channel
1190          */
1191         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1192             !(is_channel_ibss(ch_info)))
1193                 ch_info = &priv->channel_info[0];
1194
1195         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1196         priv->band = ch_info->band;
1197
1198         iwl_set_flags_for_band(priv, priv->band);
1199
1200         priv->staging_rxon.ofdm_basic_rates =
1201             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1202         priv->staging_rxon.cck_basic_rates =
1203             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1204
1205         /* clear both MIX and PURE40 mode flag */
1206         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1207                                         RXON_FLG_CHANNEL_MODE_PURE_40);
1208         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1209         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1210         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1211         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1212         priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1213 }
1214 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1215
1216 static void iwl_set_rate(struct iwl_priv *priv)
1217 {
1218         const struct ieee80211_supported_band *hw = NULL;
1219         struct ieee80211_rate *rate;
1220         int i;
1221
1222         hw = iwl_get_hw_mode(priv, priv->band);
1223         if (!hw) {
1224                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1225                 return;
1226         }
1227
1228         priv->active_rate = 0;
1229         priv->active_rate_basic = 0;
1230
1231         for (i = 0; i < hw->n_bitrates; i++) {
1232                 rate = &(hw->bitrates[i]);
1233                 if (rate->hw_value < IWL_RATE_COUNT)
1234                         priv->active_rate |= (1 << rate->hw_value);
1235         }
1236
1237         IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1238                        priv->active_rate, priv->active_rate_basic);
1239
1240         /*
1241          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1242          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1243          * OFDM
1244          */
1245         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1246                 priv->staging_rxon.cck_basic_rates =
1247                     ((priv->active_rate_basic &
1248                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1249         else
1250                 priv->staging_rxon.cck_basic_rates =
1251                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1252
1253         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1254                 priv->staging_rxon.ofdm_basic_rates =
1255                     ((priv->active_rate_basic &
1256                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1257                       IWL_FIRST_OFDM_RATE) & 0xFF;
1258         else
1259                 priv->staging_rxon.ofdm_basic_rates =
1260                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1261 }
1262
1263 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1264 {
1265         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1266         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1267         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1268         IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1269                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1270         rxon->channel = csa->channel;
1271         priv->staging_rxon.channel = csa->channel;
1272 }
1273 EXPORT_SYMBOL(iwl_rx_csa);
1274
1275 #ifdef CONFIG_IWLWIFI_DEBUG
1276 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1277 {
1278         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1279
1280         IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1281         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1282         IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1283         IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1284         IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1285                         le32_to_cpu(rxon->filter_flags));
1286         IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1287         IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1288                         rxon->ofdm_basic_rates);
1289         IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1290         IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1291         IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1292         IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1293 }
1294
1295 static const char *desc_lookup_text[] = {
1296         "OK",
1297         "FAIL",
1298         "BAD_PARAM",
1299         "BAD_CHECKSUM",
1300         "NMI_INTERRUPT_WDG",
1301         "SYSASSERT",
1302         "FATAL_ERROR",
1303         "BAD_COMMAND",
1304         "HW_ERROR_TUNE_LOCK",
1305         "HW_ERROR_TEMPERATURE",
1306         "ILLEGAL_CHAN_FREQ",
1307         "VCC_NOT_STABLE",
1308         "FH_ERROR",
1309         "NMI_INTERRUPT_HOST",
1310         "NMI_INTERRUPT_ACTION_PT",
1311         "NMI_INTERRUPT_UNKNOWN",
1312         "UCODE_VERSION_MISMATCH",
1313         "HW_ERROR_ABS_LOCK",
1314         "HW_ERROR_CAL_LOCK_FAIL",
1315         "NMI_INTERRUPT_INST_ACTION_PT",
1316         "NMI_INTERRUPT_DATA_ACTION_PT",
1317         "NMI_TRM_HW_ER",
1318         "NMI_INTERRUPT_TRM",
1319         "NMI_INTERRUPT_BREAK_POINT"
1320         "DEBUG_0",
1321         "DEBUG_1",
1322         "DEBUG_2",
1323         "DEBUG_3",
1324         "UNKNOWN"
1325 };
1326
1327 static const char *desc_lookup(int i)
1328 {
1329         int max = ARRAY_SIZE(desc_lookup_text) - 1;
1330
1331         if (i < 0 || i > max)
1332                 i = max;
1333
1334         return desc_lookup_text[i];
1335 }
1336
1337 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1338 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1339
1340 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1341 {
1342         u32 data2, line;
1343         u32 desc, time, count, base, data1;
1344         u32 blink1, blink2, ilink1, ilink2;
1345
1346         switch (priv->ucode_type) {
1347         case UCODE_RT:
1348                 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1349                 break;
1350         case UCODE_INIT:
1351                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1352                 break;
1353         default:
1354                 IWL_ERR(priv, "uCode image not available\n");
1355                 return;
1356         }
1357
1358         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1359                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1360                 return;
1361         }
1362
1363         count = iwl_read_targ_mem(priv, base);
1364
1365         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1366                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1367                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1368                         priv->status, count);
1369         }
1370
1371         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1372         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1373         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1374         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1375         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1376         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1377         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1378         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1379         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1380
1381         IWL_ERR(priv, "Desc                               Time       "
1382                 "data1      data2      line\n");
1383         IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1384                 desc_lookup(desc), desc, time, data1, data2, line);
1385         IWL_ERR(priv, "blink1  blink2  ilink1  ilink2\n");
1386         IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1387                 ilink1, ilink2);
1388
1389 }
1390
1391 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1392
1393 /**
1394  * iwl_print_event_log - Dump error event log to syslog
1395  *
1396  */
1397 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1398                                 u32 num_events, u32 mode)
1399 {
1400         u32 i;
1401         u32 base;       /* SRAM byte address of event log header */
1402         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1403         u32 ptr;        /* SRAM byte address of log data */
1404         u32 ev, time, data; /* event log data */
1405
1406         if (num_events == 0)
1407                 return;
1408         switch (priv->ucode_type) {
1409         case UCODE_RT:
1410                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1411                 break;
1412         case UCODE_INIT:
1413                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1414                 break;
1415         default:
1416                 IWL_ERR(priv, "uCode image not available\n");
1417                 return;
1418         }
1419
1420         if (mode == 0)
1421                 event_size = 2 * sizeof(u32);
1422         else
1423                 event_size = 3 * sizeof(u32);
1424
1425         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1426
1427         /* "time" is actually "data" for mode 0 (no timestamp).
1428         * place event id # at far right for easier visual parsing. */
1429         for (i = 0; i < num_events; i++) {
1430                 ev = iwl_read_targ_mem(priv, ptr);
1431                 ptr += sizeof(u32);
1432                 time = iwl_read_targ_mem(priv, ptr);
1433                 ptr += sizeof(u32);
1434                 if (mode == 0) {
1435                         /* data, ev */
1436                         IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1437                 } else {
1438                         data = iwl_read_targ_mem(priv, ptr);
1439                         ptr += sizeof(u32);
1440                         IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1441                                         time, data, ev);
1442                 }
1443         }
1444 }
1445
1446 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1447 {
1448         u32 base;       /* SRAM byte address of event log header */
1449         u32 capacity;   /* event log capacity in # entries */
1450         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1451         u32 num_wraps;  /* # times uCode wrapped to top of log */
1452         u32 next_entry; /* index of next entry to be written by uCode */
1453         u32 size;       /* # entries that we'll print */
1454
1455         switch (priv->ucode_type) {
1456         case UCODE_RT:
1457                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1458                 break;
1459         case UCODE_INIT:
1460                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1461                 break;
1462         default:
1463                 IWL_ERR(priv, "uCode image not available\n");
1464                 return;
1465         }
1466
1467         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1468                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1469                 return;
1470         }
1471
1472         /* event log header */
1473         capacity = iwl_read_targ_mem(priv, base);
1474         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1475         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1476         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1477
1478         size = num_wraps ? capacity : next_entry;
1479
1480         /* bail out if nothing in log */
1481         if (size == 0) {
1482                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1483                 return;
1484         }
1485
1486         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1487                         size, num_wraps);
1488
1489         /* if uCode has wrapped back to top of log, start at the oldest entry,
1490          * i.e the next one that uCode would fill. */
1491         if (num_wraps)
1492                 iwl_print_event_log(priv, next_entry,
1493                                         capacity - next_entry, mode);
1494         /* (then/else) start at top of log */
1495         iwl_print_event_log(priv, 0, next_entry, mode);
1496
1497 }
1498 #endif
1499 /**
1500  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1501  */
1502 void iwl_irq_handle_error(struct iwl_priv *priv)
1503 {
1504         /* Set the FW error flag -- cleared on iwl_down */
1505         set_bit(STATUS_FW_ERROR, &priv->status);
1506
1507         /* Cancel currently queued command. */
1508         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1509
1510 #ifdef CONFIG_IWLWIFI_DEBUG
1511         if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) {
1512                 iwl_dump_nic_error_log(priv);
1513                 iwl_dump_nic_event_log(priv);
1514                 iwl_print_rx_config_cmd(priv);
1515         }
1516 #endif
1517
1518         wake_up_interruptible(&priv->wait_command_queue);
1519
1520         /* Keep the restart process from trying to send host
1521          * commands by clearing the INIT status bit */
1522         clear_bit(STATUS_READY, &priv->status);
1523
1524         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1525                 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1526                           "Restarting adapter due to uCode error.\n");
1527
1528                 if (priv->cfg->mod_params->restart_fw)
1529                         queue_work(priv->workqueue, &priv->restart);
1530         }
1531 }
1532 EXPORT_SYMBOL(iwl_irq_handle_error);
1533
1534 void iwl_configure_filter(struct ieee80211_hw *hw,
1535                           unsigned int changed_flags,
1536                           unsigned int *total_flags,
1537                           int mc_count, struct dev_addr_list *mc_list)
1538 {
1539         struct iwl_priv *priv = hw->priv;
1540         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1541
1542         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1543                         changed_flags, *total_flags);
1544
1545         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1546                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1547                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
1548                 else
1549                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1550         }
1551         if (changed_flags & FIF_ALLMULTI) {
1552                 if (*total_flags & FIF_ALLMULTI)
1553                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1554                 else
1555                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1556         }
1557         if (changed_flags & FIF_CONTROL) {
1558                 if (*total_flags & FIF_CONTROL)
1559                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1560                 else
1561                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1562         }
1563         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1564                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1565                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1566                 else
1567                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1568         }
1569
1570         /* We avoid iwl_commit_rxon here to commit the new filter flags
1571          * since mac80211 will call ieee80211_hw_config immediately.
1572          * (mc_list is not supported at this time). Otherwise, we need to
1573          * queue a background iwl_commit_rxon work.
1574          */
1575
1576         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1577                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1578 }
1579 EXPORT_SYMBOL(iwl_configure_filter);
1580
1581 int iwl_setup_mac(struct iwl_priv *priv)
1582 {
1583         int ret;
1584         struct ieee80211_hw *hw = priv->hw;
1585         hw->rate_control_algorithm = "iwl-agn-rs";
1586
1587         /* Tell mac80211 our characteristics */
1588         hw->flags = IEEE80211_HW_SIGNAL_DBM |
1589                     IEEE80211_HW_NOISE_DBM |
1590                     IEEE80211_HW_AMPDU_AGGREGATION |
1591                     IEEE80211_HW_SPECTRUM_MGMT |
1592                     IEEE80211_HW_SUPPORTS_PS;
1593         hw->wiphy->interface_modes =
1594                 BIT(NL80211_IFTYPE_STATION) |
1595                 BIT(NL80211_IFTYPE_ADHOC);
1596
1597         hw->wiphy->custom_regulatory = true;
1598
1599         /* Firmware does not support this */
1600         hw->wiphy->disable_beacon_hints = true;
1601
1602         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1603         /* we create the 802.11 header and a zero-length SSID element */
1604         hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
1605
1606         /* Default value; 4 EDCA QOS priorities */
1607         hw->queues = 4;
1608
1609         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1610
1611         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1612                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1613                         &priv->bands[IEEE80211_BAND_2GHZ];
1614         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1615                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1616                         &priv->bands[IEEE80211_BAND_5GHZ];
1617
1618         ret = ieee80211_register_hw(priv->hw);
1619         if (ret) {
1620                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1621                 return ret;
1622         }
1623         priv->mac80211_registered = 1;
1624
1625         return 0;
1626 }
1627 EXPORT_SYMBOL(iwl_setup_mac);
1628
1629 int iwl_set_hw_params(struct iwl_priv *priv)
1630 {
1631         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1632         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1633         if (priv->cfg->mod_params->amsdu_size_8K)
1634                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1635         else
1636                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1637         priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1638
1639         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1640
1641         if (priv->cfg->mod_params->disable_11n)
1642                 priv->cfg->sku &= ~IWL_SKU_N;
1643
1644         /* Device-specific setup */
1645         return priv->cfg->ops->lib->set_hw_params(priv);
1646 }
1647 EXPORT_SYMBOL(iwl_set_hw_params);
1648
1649 int iwl_init_drv(struct iwl_priv *priv)
1650 {
1651         int ret;
1652
1653         priv->ibss_beacon = NULL;
1654
1655         spin_lock_init(&priv->lock);
1656         spin_lock_init(&priv->sta_lock);
1657         spin_lock_init(&priv->hcmd_lock);
1658
1659         INIT_LIST_HEAD(&priv->free_frames);
1660
1661         mutex_init(&priv->mutex);
1662
1663         /* Clear the driver's (not device's) station table */
1664         iwl_clear_stations_table(priv);
1665
1666         priv->data_retry_limit = -1;
1667         priv->ieee_channels = NULL;
1668         priv->ieee_rates = NULL;
1669         priv->band = IEEE80211_BAND_2GHZ;
1670
1671         priv->iw_mode = NL80211_IFTYPE_STATION;
1672
1673         priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
1674
1675         /* Choose which receivers/antennas to use */
1676         if (priv->cfg->ops->hcmd->set_rxon_chain)
1677                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1678
1679         iwl_init_scan_params(priv);
1680
1681         iwl_reset_qos(priv);
1682
1683         priv->qos_data.qos_active = 0;
1684         priv->qos_data.qos_cap.val = 0;
1685
1686         priv->rates_mask = IWL_RATES_MASK;
1687         /* If power management is turned on, default to CAM mode */
1688         priv->power_mode = IWL_POWER_MODE_CAM;
1689         priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
1690
1691         ret = iwl_init_channel_map(priv);
1692         if (ret) {
1693                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1694                 goto err;
1695         }
1696
1697         ret = iwlcore_init_geos(priv);
1698         if (ret) {
1699                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1700                 goto err_free_channel_map;
1701         }
1702         iwlcore_init_hw_rates(priv, priv->ieee_rates);
1703
1704         return 0;
1705
1706 err_free_channel_map:
1707         iwl_free_channel_map(priv);
1708 err:
1709         return ret;
1710 }
1711 EXPORT_SYMBOL(iwl_init_drv);
1712
1713 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1714 {
1715         int ret = 0;
1716         if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1717                 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1718                          tx_power,
1719                          IWL_TX_POWER_TARGET_POWER_MIN);
1720                 return -EINVAL;
1721         }
1722
1723         if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
1724                 IWL_WARN(priv, "Requested user TXPOWER %d above upper limit %d.\n",
1725                          tx_power,
1726                          IWL_TX_POWER_TARGET_POWER_MAX);
1727                 return -EINVAL;
1728         }
1729
1730         if (priv->tx_power_user_lmt != tx_power)
1731                 force = true;
1732
1733         priv->tx_power_user_lmt = tx_power;
1734
1735         /* if nic is not up don't send command */
1736         if (!iwl_is_ready_rf(priv))
1737                 return ret;
1738
1739         if (force && priv->cfg->ops->lib->send_tx_power)
1740                 ret = priv->cfg->ops->lib->send_tx_power(priv);
1741
1742         return ret;
1743 }
1744 EXPORT_SYMBOL(iwl_set_tx_power);
1745
1746 void iwl_uninit_drv(struct iwl_priv *priv)
1747 {
1748         iwl_calib_free_results(priv);
1749         iwlcore_free_geos(priv);
1750         iwl_free_channel_map(priv);
1751         kfree(priv->scan);
1752 }
1753 EXPORT_SYMBOL(iwl_uninit_drv);
1754
1755 #define ICT_COUNT (PAGE_SIZE/sizeof(u32))
1756
1757 /* Free dram table */
1758 void iwl_free_isr_ict(struct iwl_priv *priv)
1759 {
1760         if (priv->ict_tbl_vir) {
1761                 pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
1762                                         PAGE_SIZE, priv->ict_tbl_vir,
1763                                         priv->ict_tbl_dma);
1764                 priv->ict_tbl_vir = NULL;
1765         }
1766 }
1767 EXPORT_SYMBOL(iwl_free_isr_ict);
1768
1769
1770 /* allocate dram shared table it is a PAGE_SIZE aligned
1771  * also reset all data related to ICT table interrupt.
1772  */
1773 int iwl_alloc_isr_ict(struct iwl_priv *priv)
1774 {
1775
1776         if (priv->cfg->use_isr_legacy)
1777                 return 0;
1778         /* allocate shrared data table */
1779         priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
1780                                                   ICT_COUNT) + PAGE_SIZE,
1781                                                   &priv->ict_tbl_dma);
1782         if (!priv->ict_tbl_vir)
1783                 return -ENOMEM;
1784
1785         /* align table to PAGE_SIZE boundry */
1786         priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
1787
1788         IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
1789                              (unsigned long long)priv->ict_tbl_dma,
1790                              (unsigned long long)priv->aligned_ict_tbl_dma,
1791                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1792
1793         priv->ict_tbl =  priv->ict_tbl_vir +
1794                           (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
1795
1796         IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
1797                              priv->ict_tbl, priv->ict_tbl_vir,
1798                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1799
1800         /* reset table and index to all 0 */
1801         memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
1802         priv->ict_index = 0;
1803
1804         /* add periodic RX interrupt */
1805         priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
1806         return 0;
1807 }
1808 EXPORT_SYMBOL(iwl_alloc_isr_ict);
1809
1810 /* Device is going up inform it about using ICT interrupt table,
1811  * also we need to tell the driver to start using ICT interrupt.
1812  */
1813 int iwl_reset_ict(struct iwl_priv *priv)
1814 {
1815         u32 val;
1816         unsigned long flags;
1817
1818         if (!priv->ict_tbl_vir)
1819                 return 0;
1820
1821         spin_lock_irqsave(&priv->lock, flags);
1822         iwl_disable_interrupts(priv);
1823
1824         memset(&priv->ict_tbl[0],0, sizeof(u32) * ICT_COUNT);
1825
1826         val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
1827
1828         val |= CSR_DRAM_INT_TBL_ENABLE;
1829         val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
1830
1831         IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
1832                         "aligned dma address %Lx\n",
1833                         val, (unsigned long long)priv->aligned_ict_tbl_dma);
1834
1835         iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
1836         priv->use_ict = true;
1837         priv->ict_index = 0;
1838         iwl_write32(priv, CSR_INT, priv->inta_mask);
1839         iwl_enable_interrupts(priv);
1840         spin_unlock_irqrestore(&priv->lock, flags);
1841
1842         return 0;
1843 }
1844 EXPORT_SYMBOL(iwl_reset_ict);
1845
1846 /* Device is going down disable ict interrupt usage */
1847 void iwl_disable_ict(struct iwl_priv *priv)
1848 {
1849         unsigned long flags;
1850
1851         spin_lock_irqsave(&priv->lock, flags);
1852         priv->use_ict = false;
1853         spin_unlock_irqrestore(&priv->lock, flags);
1854 }
1855 EXPORT_SYMBOL(iwl_disable_ict);
1856
1857 /* interrupt handler using ict table, with this interrupt driver will
1858  * stop using INTA register to get device's interrupt, reading this register
1859  * is expensive, device will write interrupts in ICT dram table, increment
1860  * index then will fire interrupt to driver, driver will OR all ICT table
1861  * entries from current index up to table entry with 0 value. the result is
1862  * the interrupt we need to service, driver will set the entries back to 0 and
1863  * set index.
1864  */
1865 irqreturn_t iwl_isr_ict(int irq, void *data)
1866 {
1867         struct iwl_priv *priv = data;
1868         u32 inta, inta_mask;
1869         u32 val = 0;
1870
1871         if (!priv)
1872                 return IRQ_NONE;
1873
1874         /* dram interrupt table not set yet,
1875          * use legacy interrupt.
1876          */
1877         if (!priv->use_ict)
1878                 return iwl_isr(irq, data);
1879
1880         spin_lock(&priv->lock);
1881
1882         /* Disable (but don't clear!) interrupts here to avoid
1883          * back-to-back ISRs and sporadic interrupts from our NIC.
1884          * If we have something to service, the tasklet will re-enable ints.
1885          * If we *don't* have something, we'll re-enable before leaving here.
1886          */
1887         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1888         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1889
1890
1891         /* Ignore interrupt if there's nothing in NIC to service.
1892          * This may be due to IRQ shared with another device,
1893          * or due to sporadic interrupts thrown from our NIC. */
1894         if (!priv->ict_tbl[priv->ict_index]) {
1895                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1896                 goto none;
1897         }
1898
1899         /* read all entries that not 0 start with ict_index */
1900         while (priv->ict_tbl[priv->ict_index]) {
1901
1902                 val |= priv->ict_tbl[priv->ict_index];
1903                 IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1904                                         priv->ict_index,
1905                                         priv->ict_tbl[priv->ict_index]);
1906                 priv->ict_tbl[priv->ict_index] = 0;
1907                 priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1908                                                                 ICT_COUNT);
1909
1910         }
1911
1912         /* We should not get this value, just ignore it. */
1913         if (val == 0xffffffff)
1914                 val = 0;
1915
1916         inta = (0xff & val) | ((0xff00 & val) << 16);
1917         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
1918                         inta, inta_mask, val);
1919
1920         inta &= priv->inta_mask;
1921         priv->inta |= inta;
1922
1923         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1924         if (likely(inta))
1925                 tasklet_schedule(&priv->irq_tasklet);
1926         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
1927                 /* Allow interrupt if was disabled by this handler and
1928                  * no tasklet was schedules, We should not enable interrupt,
1929                  * tasklet will enable it.
1930                  */
1931                 iwl_enable_interrupts(priv);
1932         }
1933
1934         spin_unlock(&priv->lock);
1935         return IRQ_HANDLED;
1936
1937  none:
1938         /* re-enable interrupts here since we don't have anything to service.
1939          * only Re-enable if disabled by irq.
1940          */
1941         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1942                 iwl_enable_interrupts(priv);
1943
1944         spin_unlock(&priv->lock);
1945         return IRQ_NONE;
1946 }
1947 EXPORT_SYMBOL(iwl_isr_ict);
1948
1949
1950 static irqreturn_t iwl_isr(int irq, void *data)
1951 {
1952         struct iwl_priv *priv = data;
1953         u32 inta, inta_mask;
1954 #ifdef CONFIG_IWLWIFI_DEBUG
1955         u32 inta_fh;
1956 #endif
1957         if (!priv)
1958                 return IRQ_NONE;
1959
1960         spin_lock(&priv->lock);
1961
1962         /* Disable (but don't clear!) interrupts here to avoid
1963          *    back-to-back ISRs and sporadic interrupts from our NIC.
1964          * If we have something to service, the tasklet will re-enable ints.
1965          * If we *don't* have something, we'll re-enable before leaving here. */
1966         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1967         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1968
1969         /* Discover which interrupts are active/pending */
1970         inta = iwl_read32(priv, CSR_INT);
1971
1972         /* Ignore interrupt if there's nothing in NIC to service.
1973          * This may be due to IRQ shared with another device,
1974          * or due to sporadic interrupts thrown from our NIC. */
1975         if (!inta) {
1976                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1977                 goto none;
1978         }
1979
1980         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1981                 /* Hardware disappeared. It might have already raised
1982                  * an interrupt */
1983                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1984                 goto unplugged;
1985         }
1986
1987 #ifdef CONFIG_IWLWIFI_DEBUG
1988         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1989                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1990                 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
1991                               "fh 0x%08x\n", inta, inta_mask, inta_fh);
1992         }
1993 #endif
1994
1995         priv->inta |= inta;
1996         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1997         if (likely(inta))
1998                 tasklet_schedule(&priv->irq_tasklet);
1999         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
2000                 iwl_enable_interrupts(priv);
2001
2002  unplugged:
2003         spin_unlock(&priv->lock);
2004         return IRQ_HANDLED;
2005
2006  none:
2007         /* re-enable interrupts here since we don't have anything to service. */
2008         /* only Re-enable if diabled by irq  and no schedules tasklet. */
2009         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
2010                 iwl_enable_interrupts(priv);
2011
2012         spin_unlock(&priv->lock);
2013         return IRQ_NONE;
2014 }
2015
2016 irqreturn_t iwl_isr_legacy(int irq, void *data)
2017 {
2018         struct iwl_priv *priv = data;
2019         u32 inta, inta_mask;
2020         u32 inta_fh;
2021         if (!priv)
2022                 return IRQ_NONE;
2023
2024         spin_lock(&priv->lock);
2025
2026         /* Disable (but don't clear!) interrupts here to avoid
2027          *    back-to-back ISRs and sporadic interrupts from our NIC.
2028          * If we have something to service, the tasklet will re-enable ints.
2029          * If we *don't* have something, we'll re-enable before leaving here. */
2030         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
2031         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2032
2033         /* Discover which interrupts are active/pending */
2034         inta = iwl_read32(priv, CSR_INT);
2035         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2036
2037         /* Ignore interrupt if there's nothing in NIC to service.
2038          * This may be due to IRQ shared with another device,
2039          * or due to sporadic interrupts thrown from our NIC. */
2040         if (!inta && !inta_fh) {
2041                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
2042                 goto none;
2043         }
2044
2045         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2046                 /* Hardware disappeared. It might have already raised
2047                  * an interrupt */
2048                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
2049                 goto unplugged;
2050         }
2051
2052         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2053                       inta, inta_mask, inta_fh);
2054
2055         inta &= ~CSR_INT_BIT_SCD;
2056
2057         /* iwl_irq_tasklet() will service interrupts and re-enable them */
2058         if (likely(inta || inta_fh))
2059                 tasklet_schedule(&priv->irq_tasklet);
2060
2061  unplugged:
2062         spin_unlock(&priv->lock);
2063         return IRQ_HANDLED;
2064
2065  none:
2066         /* re-enable interrupts here since we don't have anything to service. */
2067         /* only Re-enable if diabled by irq */
2068         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2069                 iwl_enable_interrupts(priv);
2070         spin_unlock(&priv->lock);
2071         return IRQ_NONE;
2072 }
2073 EXPORT_SYMBOL(iwl_isr_legacy);
2074
2075 int iwl_send_bt_config(struct iwl_priv *priv)
2076 {
2077         struct iwl_bt_cmd bt_cmd = {
2078                 .flags = 3,
2079                 .lead_time = 0xAA,
2080                 .max_kill = 1,
2081                 .kill_ack_mask = 0,
2082                 .kill_cts_mask = 0,
2083         };
2084
2085         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
2086                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
2087 }
2088 EXPORT_SYMBOL(iwl_send_bt_config);
2089
2090 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
2091 {
2092         u32 stat_flags = 0;
2093         struct iwl_host_cmd cmd = {
2094                 .id = REPLY_STATISTICS_CMD,
2095                 .flags = flags,
2096                 .len = sizeof(stat_flags),
2097                 .data = (u8 *) &stat_flags,
2098         };
2099         return iwl_send_cmd(priv, &cmd);
2100 }
2101 EXPORT_SYMBOL(iwl_send_statistics_request);
2102
2103 /**
2104  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
2105  *   using sample data 100 bytes apart.  If these sample points are good,
2106  *   it's a pretty good bet that everything between them is good, too.
2107  */
2108 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2109 {
2110         u32 val;
2111         int ret = 0;
2112         u32 errcnt = 0;
2113         u32 i;
2114
2115         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2116
2117         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2118                 /* read data comes through single port, auto-incr addr */
2119                 /* NOTE: Use the debugless read so we don't flood kernel log
2120                  * if IWL_DL_IO is set */
2121                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2122                         i + IWL49_RTC_INST_LOWER_BOUND);
2123                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2124                 if (val != le32_to_cpu(*image)) {
2125                         ret = -EIO;
2126                         errcnt++;
2127                         if (errcnt >= 3)
2128                                 break;
2129                 }
2130         }
2131
2132         return ret;
2133 }
2134
2135 /**
2136  * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
2137  *     looking at all data.
2138  */
2139 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
2140                                  u32 len)
2141 {
2142         u32 val;
2143         u32 save_len = len;
2144         int ret = 0;
2145         u32 errcnt;
2146
2147         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2148
2149         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2150                            IWL49_RTC_INST_LOWER_BOUND);
2151
2152         errcnt = 0;
2153         for (; len > 0; len -= sizeof(u32), image++) {
2154                 /* read data comes through single port, auto-incr addr */
2155                 /* NOTE: Use the debugless read so we don't flood kernel log
2156                  * if IWL_DL_IO is set */
2157                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2158                 if (val != le32_to_cpu(*image)) {
2159                         IWL_ERR(priv, "uCode INST section is invalid at "
2160                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2161                                   save_len - len, val, le32_to_cpu(*image));
2162                         ret = -EIO;
2163                         errcnt++;
2164                         if (errcnt >= 20)
2165                                 break;
2166                 }
2167         }
2168
2169         if (!errcnt)
2170                 IWL_DEBUG_INFO(priv,
2171                     "ucode image in INSTRUCTION memory is good\n");
2172
2173         return ret;
2174 }
2175
2176 /**
2177  * iwl_verify_ucode - determine which instruction image is in SRAM,
2178  *    and verify its contents
2179  */
2180 int iwl_verify_ucode(struct iwl_priv *priv)
2181 {
2182         __le32 *image;
2183         u32 len;
2184         int ret;
2185
2186         /* Try bootstrap */
2187         image = (__le32 *)priv->ucode_boot.v_addr;
2188         len = priv->ucode_boot.len;
2189         ret = iwlcore_verify_inst_sparse(priv, image, len);
2190         if (!ret) {
2191                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2192                 return 0;
2193         }
2194
2195         /* Try initialize */
2196         image = (__le32 *)priv->ucode_init.v_addr;
2197         len = priv->ucode_init.len;
2198         ret = iwlcore_verify_inst_sparse(priv, image, len);
2199         if (!ret) {
2200                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2201                 return 0;
2202         }
2203
2204         /* Try runtime/protocol */
2205         image = (__le32 *)priv->ucode_code.v_addr;
2206         len = priv->ucode_code.len;
2207         ret = iwlcore_verify_inst_sparse(priv, image, len);
2208         if (!ret) {
2209                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2210                 return 0;
2211         }
2212
2213         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2214
2215         /* Since nothing seems to match, show first several data entries in
2216          * instruction SRAM, so maybe visual inspection will give a clue.
2217          * Selection of bootstrap image (vs. other images) is arbitrary. */
2218         image = (__le32 *)priv->ucode_boot.v_addr;
2219         len = priv->ucode_boot.len;
2220         ret = iwl_verify_inst_full(priv, image, len);
2221
2222         return ret;
2223 }
2224 EXPORT_SYMBOL(iwl_verify_ucode);
2225
2226
2227 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2228 {
2229         struct iwl_ct_kill_config cmd;
2230         struct iwl_ct_kill_throttling_config adv_cmd;
2231         unsigned long flags;
2232         int ret = 0;
2233
2234         spin_lock_irqsave(&priv->lock, flags);
2235         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2236                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2237         spin_unlock_irqrestore(&priv->lock, flags);
2238         priv->power_data.ct_kill_toggle = false;
2239
2240         switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
2241         case CSR_HW_REV_TYPE_1000:
2242         case CSR_HW_REV_TYPE_6x00:
2243         case CSR_HW_REV_TYPE_6x50:
2244                 adv_cmd.critical_temperature_enter =
2245                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2246                 adv_cmd.critical_temperature_exit =
2247                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2248
2249                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2250                                        sizeof(adv_cmd), &adv_cmd);
2251                 break;
2252         default:
2253                 cmd.critical_temperature_R =
2254                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2255
2256                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2257                                        sizeof(cmd), &cmd);
2258                 break;
2259         }
2260         ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2261                                sizeof(cmd), &cmd);
2262         if (ret)
2263                 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2264         else
2265                 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD succeeded, "
2266                         "critical temperature is %d\n",
2267                         cmd.critical_temperature_R);
2268 }
2269 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2270
2271
2272 /*
2273  * CARD_STATE_CMD
2274  *
2275  * Use: Sets the device's internal card state to enable, disable, or halt
2276  *
2277  * When in the 'enable' state the card operates as normal.
2278  * When in the 'disable' state, the card enters into a low power mode.
2279  * When in the 'halt' state, the card is shut down and must be fully
2280  * restarted to come back on.
2281  */
2282 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2283 {
2284         struct iwl_host_cmd cmd = {
2285                 .id = REPLY_CARD_STATE_CMD,
2286                 .len = sizeof(u32),
2287                 .data = &flags,
2288                 .flags = meta_flag,
2289         };
2290
2291         return iwl_send_cmd(priv, &cmd);
2292 }
2293
2294 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2295                            struct iwl_rx_mem_buffer *rxb)
2296 {
2297 #ifdef CONFIG_IWLWIFI_DEBUG
2298         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2299         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2300         IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2301                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2302 #endif
2303 }
2304 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2305
2306 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2307                                       struct iwl_rx_mem_buffer *rxb)
2308 {
2309         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2310         IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2311                         "notification for %s:\n",
2312                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2313         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2314 }
2315 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2316
2317 void iwl_rx_reply_error(struct iwl_priv *priv,
2318                         struct iwl_rx_mem_buffer *rxb)
2319 {
2320         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2321
2322         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2323                 "seq 0x%04X ser 0x%08X\n",
2324                 le32_to_cpu(pkt->u.err_resp.error_type),
2325                 get_cmd_string(pkt->u.err_resp.cmd_id),
2326                 pkt->u.err_resp.cmd_id,
2327                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2328                 le32_to_cpu(pkt->u.err_resp.error_info));
2329 }
2330 EXPORT_SYMBOL(iwl_rx_reply_error);
2331
2332 void iwl_clear_isr_stats(struct iwl_priv *priv)
2333 {
2334         memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2335 }
2336
2337 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2338                            const struct ieee80211_tx_queue_params *params)
2339 {
2340         struct iwl_priv *priv = hw->priv;
2341         unsigned long flags;
2342         int q;
2343
2344         IWL_DEBUG_MAC80211(priv, "enter\n");
2345
2346         if (!iwl_is_ready_rf(priv)) {
2347                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2348                 return -EIO;
2349         }
2350
2351         if (queue >= AC_NUM) {
2352                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2353                 return 0;
2354         }
2355
2356         q = AC_NUM - 1 - queue;
2357
2358         spin_lock_irqsave(&priv->lock, flags);
2359
2360         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2361         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2362         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2363         priv->qos_data.def_qos_parm.ac[q].edca_txop =
2364                         cpu_to_le16((params->txop * 32));
2365
2366         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2367         priv->qos_data.qos_active = 1;
2368
2369         if (priv->iw_mode == NL80211_IFTYPE_AP)
2370                 iwl_activate_qos(priv, 1);
2371         else if (priv->assoc_id && iwl_is_associated(priv))
2372                 iwl_activate_qos(priv, 0);
2373
2374         spin_unlock_irqrestore(&priv->lock, flags);
2375
2376         IWL_DEBUG_MAC80211(priv, "leave\n");
2377         return 0;
2378 }
2379 EXPORT_SYMBOL(iwl_mac_conf_tx);
2380
2381 static void iwl_ht_conf(struct iwl_priv *priv,
2382                             struct ieee80211_bss_conf *bss_conf)
2383 {
2384         struct ieee80211_sta_ht_cap *ht_conf;
2385         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
2386         struct ieee80211_sta *sta;
2387
2388         IWL_DEBUG_MAC80211(priv, "enter: \n");
2389
2390         if (!iwl_conf->is_ht)
2391                 return;
2392
2393
2394         /*
2395          * It is totally wrong to base global information on something
2396          * that is valid only when associated, alas, this driver works
2397          * that way and I don't know how to fix it.
2398          */
2399
2400         rcu_read_lock();
2401         sta = ieee80211_find_sta(priv->hw, priv->bssid);
2402         if (!sta) {
2403                 rcu_read_unlock();
2404                 return;
2405         }
2406         ht_conf = &sta->ht_cap;
2407
2408         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
2409                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
2410         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
2411                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
2412
2413         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
2414         iwl_conf->max_amsdu_size =
2415                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
2416
2417         iwl_conf->supported_chan_width =
2418                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
2419
2420         /*
2421          * XXX: The HT configuration needs to be moved into iwl_mac_config()
2422          *      to be done there correctly.
2423          */
2424
2425         iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
2426         if (conf_is_ht40_minus(&priv->hw->conf))
2427                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2428         else if (conf_is_ht40_plus(&priv->hw->conf))
2429                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2430
2431         /* If no above or below channel supplied disable HT40 channel */
2432         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
2433             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
2434                 iwl_conf->supported_chan_width = 0;
2435
2436         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
2437
2438         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
2439
2440         iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
2441         iwl_conf->ht_protection =
2442                 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2443         iwl_conf->non_GF_STA_present =
2444                 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2445
2446         rcu_read_unlock();
2447
2448         IWL_DEBUG_MAC80211(priv, "leave\n");
2449 }
2450
2451 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2452 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2453                           struct ieee80211_vif *vif,
2454                           struct ieee80211_bss_conf *bss_conf,
2455                           u32 changes)
2456 {
2457         struct iwl_priv *priv = hw->priv;
2458         int ret;
2459
2460         IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2461
2462         if (!iwl_is_alive(priv))
2463                 return;
2464
2465         mutex_lock(&priv->mutex);
2466
2467         if (changes & BSS_CHANGED_BEACON &&
2468             priv->iw_mode == NL80211_IFTYPE_AP) {
2469                 dev_kfree_skb(priv->ibss_beacon);
2470                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2471         }
2472
2473         if (changes & BSS_CHANGED_BEACON_INT) {
2474                 priv->beacon_int = bss_conf->beacon_int;
2475                 /* TODO: in AP mode, do something to make this take effect */
2476         }
2477
2478         if (changes & BSS_CHANGED_BSSID) {
2479                 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2480
2481                 /*
2482                  * If there is currently a HW scan going on in the
2483                  * background then we need to cancel it else the RXON
2484                  * below/in post_associate will fail.
2485                  */
2486                 if (iwl_scan_cancel_timeout(priv, 100)) {
2487                         IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2488                         IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2489                         mutex_unlock(&priv->mutex);
2490                         return;
2491                 }
2492
2493                 /* mac80211 only sets assoc when in STATION mode */
2494                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2495                     bss_conf->assoc) {
2496                         memcpy(priv->staging_rxon.bssid_addr,
2497                                bss_conf->bssid, ETH_ALEN);
2498
2499                         /* currently needed in a few places */
2500                         memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2501                 } else {
2502                         priv->staging_rxon.filter_flags &=
2503                                 ~RXON_FILTER_ASSOC_MSK;
2504                 }
2505
2506         }
2507
2508         /*
2509          * This needs to be after setting the BSSID in case
2510          * mac80211 decides to do both changes at once because
2511          * it will invoke post_associate.
2512          */
2513         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2514             changes & BSS_CHANGED_BEACON) {
2515                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2516
2517                 if (beacon)
2518                         iwl_mac_beacon_update(hw, beacon);
2519         }
2520
2521         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2522                 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2523                                    bss_conf->use_short_preamble);
2524                 if (bss_conf->use_short_preamble)
2525                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2526                 else
2527                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2528         }
2529
2530         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2531                 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2532                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2533                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2534                 else
2535                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2536         }
2537
2538         if (changes & BSS_CHANGED_BASIC_RATES) {
2539                 /* XXX use this information
2540                  *
2541                  * To do that, remove code from iwl_set_rate() and put something
2542                  * like this here:
2543                  *
2544                 if (A-band)
2545                         priv->staging_rxon.ofdm_basic_rates =
2546                                 bss_conf->basic_rates;
2547                 else
2548                         priv->staging_rxon.ofdm_basic_rates =
2549                                 bss_conf->basic_rates >> 4;
2550                         priv->staging_rxon.cck_basic_rates =
2551                                 bss_conf->basic_rates & 0xF;
2552                  */
2553         }
2554
2555         if (changes & BSS_CHANGED_HT) {
2556                 iwl_ht_conf(priv, bss_conf);
2557
2558                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2559                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2560         }
2561
2562         if (changes & BSS_CHANGED_ASSOC) {
2563                 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2564                 if (bss_conf->assoc) {
2565                         priv->assoc_id = bss_conf->aid;
2566                         priv->beacon_int = bss_conf->beacon_int;
2567                         priv->power_data.dtim_period = bss_conf->dtim_period;
2568                         priv->timestamp = bss_conf->timestamp;
2569                         priv->assoc_capability = bss_conf->assoc_capability;
2570
2571                         /*
2572                          * We have just associated, don't start scan too early
2573                          * leave time for EAPOL exchange to complete.
2574                          *
2575                          * XXX: do this in mac80211
2576                          */
2577                         priv->next_scan_jiffies = jiffies +
2578                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2579                         if (!iwl_is_rfkill(priv))
2580                                 priv->cfg->ops->lib->post_associate(priv);
2581                 } else
2582                         priv->assoc_id = 0;
2583
2584         }
2585
2586         if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2587                 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2588                                    changes);
2589                 ret = iwl_send_rxon_assoc(priv);
2590                 if (!ret) {
2591                         /* Sync active_rxon with latest change. */
2592                         memcpy((void *)&priv->active_rxon,
2593                                 &priv->staging_rxon,
2594                                 sizeof(struct iwl_rxon_cmd));
2595                 }
2596         }
2597
2598         mutex_unlock(&priv->mutex);
2599
2600         IWL_DEBUG_MAC80211(priv, "leave\n");
2601 }
2602 EXPORT_SYMBOL(iwl_bss_info_changed);
2603
2604 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2605 {
2606         struct iwl_priv *priv = hw->priv;
2607         unsigned long flags;
2608         __le64 timestamp;
2609
2610         IWL_DEBUG_MAC80211(priv, "enter\n");
2611
2612         if (!iwl_is_ready_rf(priv)) {
2613                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2614                 return -EIO;
2615         }
2616
2617         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2618                 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2619                 return -EIO;
2620         }
2621
2622         spin_lock_irqsave(&priv->lock, flags);
2623
2624         if (priv->ibss_beacon)
2625                 dev_kfree_skb(priv->ibss_beacon);
2626
2627         priv->ibss_beacon = skb;
2628
2629         priv->assoc_id = 0;
2630         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2631         priv->timestamp = le64_to_cpu(timestamp);
2632
2633         IWL_DEBUG_MAC80211(priv, "leave\n");
2634         spin_unlock_irqrestore(&priv->lock, flags);
2635
2636         iwl_reset_qos(priv);
2637
2638         priv->cfg->ops->lib->post_associate(priv);
2639
2640
2641         return 0;
2642 }
2643 EXPORT_SYMBOL(iwl_mac_beacon_update);
2644
2645 int iwl_set_mode(struct iwl_priv *priv, int mode)
2646 {
2647         if (mode == NL80211_IFTYPE_ADHOC) {
2648                 const struct iwl_channel_info *ch_info;
2649
2650                 ch_info = iwl_get_channel_info(priv,
2651                         priv->band,
2652                         le16_to_cpu(priv->staging_rxon.channel));
2653
2654                 if (!ch_info || !is_channel_ibss(ch_info)) {
2655                         IWL_ERR(priv, "channel %d not IBSS channel\n",
2656                                   le16_to_cpu(priv->staging_rxon.channel));
2657                         return -EINVAL;
2658                 }
2659         }
2660
2661         iwl_connection_init_rx_config(priv, mode);
2662
2663         if (priv->cfg->ops->hcmd->set_rxon_chain)
2664                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2665
2666         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2667
2668         iwl_clear_stations_table(priv);
2669
2670         /* dont commit rxon if rf-kill is on*/
2671         if (!iwl_is_ready_rf(priv))
2672                 return -EAGAIN;
2673
2674         iwlcore_commit_rxon(priv);
2675
2676         return 0;
2677 }
2678 EXPORT_SYMBOL(iwl_set_mode);
2679
2680 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2681                                  struct ieee80211_if_init_conf *conf)
2682 {
2683         struct iwl_priv *priv = hw->priv;
2684         unsigned long flags;
2685
2686         IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2687
2688         if (priv->vif) {
2689                 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2690                 return -EOPNOTSUPP;
2691         }
2692
2693         spin_lock_irqsave(&priv->lock, flags);
2694         priv->vif = conf->vif;
2695         priv->iw_mode = conf->type;
2696
2697         spin_unlock_irqrestore(&priv->lock, flags);
2698
2699         mutex_lock(&priv->mutex);
2700
2701         if (conf->mac_addr) {
2702                 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2703                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2704         }
2705
2706         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2707                 /* we are not ready, will run again when ready */
2708                 set_bit(STATUS_MODE_PENDING, &priv->status);
2709
2710         mutex_unlock(&priv->mutex);
2711
2712         IWL_DEBUG_MAC80211(priv, "leave\n");
2713         return 0;
2714 }
2715 EXPORT_SYMBOL(iwl_mac_add_interface);
2716
2717 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2718                                      struct ieee80211_if_init_conf *conf)
2719 {
2720         struct iwl_priv *priv = hw->priv;
2721
2722         IWL_DEBUG_MAC80211(priv, "enter\n");
2723
2724         mutex_lock(&priv->mutex);
2725
2726         if (iwl_is_ready_rf(priv)) {
2727                 iwl_scan_cancel_timeout(priv, 100);
2728                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2729                 iwlcore_commit_rxon(priv);
2730         }
2731         if (priv->vif == conf->vif) {
2732                 priv->vif = NULL;
2733                 memset(priv->bssid, 0, ETH_ALEN);
2734         }
2735         mutex_unlock(&priv->mutex);
2736
2737         IWL_DEBUG_MAC80211(priv, "leave\n");
2738
2739 }
2740 EXPORT_SYMBOL(iwl_mac_remove_interface);
2741
2742 /**
2743  * iwl_mac_config - mac80211 config callback
2744  *
2745  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2746  * be set inappropriately and the driver currently sets the hardware up to
2747  * use it whenever needed.
2748  */
2749 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2750 {
2751         struct iwl_priv *priv = hw->priv;
2752         const struct iwl_channel_info *ch_info;
2753         struct ieee80211_conf *conf = &hw->conf;
2754         unsigned long flags = 0;
2755         int ret = 0;
2756         u16 ch;
2757         int scan_active = 0;
2758
2759         mutex_lock(&priv->mutex);
2760
2761         IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2762                                         conf->channel->hw_value, changed);
2763
2764         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2765                         test_bit(STATUS_SCANNING, &priv->status))) {
2766                 scan_active = 1;
2767                 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2768         }
2769
2770
2771         /* during scanning mac80211 will delay channel setting until
2772          * scan finish with changed = 0
2773          */
2774         if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2775                 if (scan_active)
2776                         goto set_ch_out;
2777
2778                 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2779                 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2780                 if (!is_channel_valid(ch_info)) {
2781                         IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2782                         ret = -EINVAL;
2783                         goto set_ch_out;
2784                 }
2785
2786                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2787                         !is_channel_ibss(ch_info)) {
2788                         IWL_ERR(priv, "channel %d in band %d not "
2789                                 "IBSS channel\n",
2790                                 conf->channel->hw_value, conf->channel->band);
2791                         ret = -EINVAL;
2792                         goto set_ch_out;
2793                 }
2794
2795                 priv->current_ht_config.is_ht = conf_is_ht(conf);
2796
2797                 spin_lock_irqsave(&priv->lock, flags);
2798
2799
2800                 /* if we are switching from ht to 2.4 clear flags
2801                  * from any ht related info since 2.4 does not
2802                  * support ht */
2803                 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2804                         priv->staging_rxon.flags = 0;
2805
2806                 iwl_set_rxon_channel(priv, conf->channel);
2807
2808                 iwl_set_flags_for_band(priv, conf->channel->band);
2809                 spin_unlock_irqrestore(&priv->lock, flags);
2810  set_ch_out:
2811                 /* The list of supported rates and rate mask can be different
2812                  * for each band; since the band may have changed, reset
2813                  * the rate mask to what mac80211 lists */
2814                 iwl_set_rate(priv);
2815         }
2816
2817         if (changed & IEEE80211_CONF_CHANGE_PS &&
2818             priv->iw_mode == NL80211_IFTYPE_STATION) {
2819                 priv->power_data.power_disabled =
2820                         !(conf->flags & IEEE80211_CONF_PS);
2821                 ret = iwl_power_update_mode(priv, 0);
2822                 if (ret)
2823                         IWL_DEBUG_MAC80211(priv, "Error setting power level\n");
2824         }
2825
2826         if (changed & IEEE80211_CONF_CHANGE_POWER) {
2827                 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2828                         priv->tx_power_user_lmt, conf->power_level);
2829
2830                 iwl_set_tx_power(priv, conf->power_level, false);
2831         }
2832
2833         /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2834         if (priv->cfg->ops->hcmd->set_rxon_chain)
2835                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2836
2837         if (!iwl_is_ready(priv)) {
2838                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2839                 goto out;
2840         }
2841
2842         if (scan_active)
2843                 goto out;
2844
2845         if (memcmp(&priv->active_rxon,
2846                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2847                 iwlcore_commit_rxon(priv);
2848         else
2849                 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2850
2851
2852 out:
2853         IWL_DEBUG_MAC80211(priv, "leave\n");
2854         mutex_unlock(&priv->mutex);
2855         return ret;
2856 }
2857 EXPORT_SYMBOL(iwl_mac_config);
2858
2859 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2860                          struct ieee80211_tx_queue_stats *stats)
2861 {
2862         struct iwl_priv *priv = hw->priv;
2863         int i, avail;
2864         struct iwl_tx_queue *txq;
2865         struct iwl_queue *q;
2866         unsigned long flags;
2867
2868         IWL_DEBUG_MAC80211(priv, "enter\n");
2869
2870         if (!iwl_is_ready_rf(priv)) {
2871                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2872                 return -EIO;
2873         }
2874
2875         spin_lock_irqsave(&priv->lock, flags);
2876
2877         for (i = 0; i < AC_NUM; i++) {
2878                 txq = &priv->txq[i];
2879                 q = &txq->q;
2880                 avail = iwl_queue_space(q);
2881
2882                 stats[i].len = q->n_window - avail;
2883                 stats[i].limit = q->n_window - q->high_mark;
2884                 stats[i].count = q->n_window;
2885
2886         }
2887         spin_unlock_irqrestore(&priv->lock, flags);
2888
2889         IWL_DEBUG_MAC80211(priv, "leave\n");
2890
2891         return 0;
2892 }
2893 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2894
2895 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2896 {
2897         struct iwl_priv *priv = hw->priv;
2898         unsigned long flags;
2899
2900         mutex_lock(&priv->mutex);
2901         IWL_DEBUG_MAC80211(priv, "enter\n");
2902
2903         spin_lock_irqsave(&priv->lock, flags);
2904         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
2905         spin_unlock_irqrestore(&priv->lock, flags);
2906
2907         iwl_reset_qos(priv);
2908
2909         spin_lock_irqsave(&priv->lock, flags);
2910         priv->assoc_id = 0;
2911         priv->assoc_capability = 0;
2912         priv->assoc_station_added = 0;
2913
2914         /* new association get rid of ibss beacon skb */
2915         if (priv->ibss_beacon)
2916                 dev_kfree_skb(priv->ibss_beacon);
2917
2918         priv->ibss_beacon = NULL;
2919
2920         priv->beacon_int = priv->vif->bss_conf.beacon_int;
2921         priv->timestamp = 0;
2922         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2923                 priv->beacon_int = 0;
2924
2925         spin_unlock_irqrestore(&priv->lock, flags);
2926
2927         if (!iwl_is_ready_rf(priv)) {
2928                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2929                 mutex_unlock(&priv->mutex);
2930                 return;
2931         }
2932
2933         /* we are restarting association process
2934          * clear RXON_FILTER_ASSOC_MSK bit
2935          */
2936         if (priv->iw_mode != NL80211_IFTYPE_AP) {
2937                 iwl_scan_cancel_timeout(priv, 100);
2938                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2939                 iwlcore_commit_rxon(priv);
2940         }
2941
2942         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2943                 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2944                 mutex_unlock(&priv->mutex);
2945                 return;
2946         }
2947
2948         iwl_set_rate(priv);
2949
2950         mutex_unlock(&priv->mutex);
2951
2952         IWL_DEBUG_MAC80211(priv, "leave\n");
2953 }
2954 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2955
2956 #ifdef CONFIG_IWLWIFI_DEBUGFS
2957
2958 #define IWL_TRAFFIC_DUMP_SIZE   (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2959
2960 void iwl_reset_traffic_log(struct iwl_priv *priv)
2961 {
2962         priv->tx_traffic_idx = 0;
2963         priv->rx_traffic_idx = 0;
2964         if (priv->tx_traffic)
2965                 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2966         if (priv->rx_traffic)
2967                 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2968 }
2969
2970 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2971 {
2972         u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2973
2974         if (iwl_debug_level & IWL_DL_TX) {
2975                 if (!priv->tx_traffic) {
2976                         priv->tx_traffic =
2977                                 kzalloc(traffic_size, GFP_KERNEL);
2978                         if (!priv->tx_traffic)
2979                                 return -ENOMEM;
2980                 }
2981         }
2982         if (iwl_debug_level & IWL_DL_RX) {
2983                 if (!priv->rx_traffic) {
2984                         priv->rx_traffic =
2985                                 kzalloc(traffic_size, GFP_KERNEL);
2986                         if (!priv->rx_traffic)
2987                                 return -ENOMEM;
2988                 }
2989         }
2990         iwl_reset_traffic_log(priv);
2991         return 0;
2992 }
2993 EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2994
2995 void iwl_free_traffic_mem(struct iwl_priv *priv)
2996 {
2997         kfree(priv->tx_traffic);
2998         priv->tx_traffic = NULL;
2999
3000         kfree(priv->rx_traffic);
3001         priv->rx_traffic = NULL;
3002 }
3003 EXPORT_SYMBOL(iwl_free_traffic_mem);
3004
3005 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
3006                       u16 length, struct ieee80211_hdr *header)
3007 {
3008         __le16 fc;
3009         u16 len;
3010
3011         if (likely(!(iwl_debug_level & IWL_DL_TX)))
3012                 return;
3013
3014         if (!priv->tx_traffic)
3015                 return;
3016
3017         fc = header->frame_control;
3018         if (ieee80211_is_data(fc)) {
3019                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
3020                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
3021                 memcpy((priv->tx_traffic +
3022                        (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
3023                        header, len);
3024                 priv->tx_traffic_idx =
3025                         (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
3026         }
3027 }
3028 EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
3029
3030 void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
3031                       u16 length, struct ieee80211_hdr *header)
3032 {
3033         __le16 fc;
3034         u16 len;
3035
3036         if (likely(!(iwl_debug_level & IWL_DL_RX)))
3037                 return;
3038
3039         if (!priv->rx_traffic)
3040                 return;
3041
3042         fc = header->frame_control;
3043         if (ieee80211_is_data(fc)) {
3044                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
3045                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
3046                 memcpy((priv->rx_traffic +
3047                        (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
3048                        header, len);
3049                 priv->rx_traffic_idx =
3050                         (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
3051         }
3052 }
3053 EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
3054 #endif
3055
3056 #ifdef CONFIG_PM
3057
3058 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3059 {
3060         struct iwl_priv *priv = pci_get_drvdata(pdev);
3061
3062         /*
3063          * This function is called when system goes into suspend state
3064          * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
3065          * first but since iwl_mac_stop() has no knowledge of who the caller is,
3066          * it will not call apm_ops.stop() to stop the DMA operation.
3067          * Calling apm_ops.stop here to make sure we stop the DMA.
3068          */
3069         priv->cfg->ops->lib->apm_ops.stop(priv);
3070
3071         pci_save_state(pdev);
3072         pci_disable_device(pdev);
3073         pci_set_power_state(pdev, PCI_D3hot);
3074
3075         return 0;
3076 }
3077 EXPORT_SYMBOL(iwl_pci_suspend);
3078
3079 int iwl_pci_resume(struct pci_dev *pdev)
3080 {
3081         struct iwl_priv *priv = pci_get_drvdata(pdev);
3082         int ret;
3083
3084         pci_set_power_state(pdev, PCI_D0);
3085         ret = pci_enable_device(pdev);
3086         if (ret)
3087                 return ret;
3088         pci_restore_state(pdev);
3089         iwl_enable_interrupts(priv);
3090
3091         return 0;
3092 }
3093 EXPORT_SYMBOL(iwl_pci_resume);
3094
3095 #endif /* CONFIG_PM */