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 <[email protected]>
  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         if (priv->ucode_type == UCODE_INIT)
1347                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1348         else
1349                 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1350
1351         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1352                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1353                 return;
1354         }
1355
1356         count = iwl_read_targ_mem(priv, base);
1357
1358         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1359                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1360                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1361                         priv->status, count);
1362         }
1363
1364         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1365         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1366         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1367         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1368         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1369         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1370         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1371         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1372         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1373
1374         IWL_ERR(priv, "Desc                               Time       "
1375                 "data1      data2      line\n");
1376         IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1377                 desc_lookup(desc), desc, time, data1, data2, line);
1378         IWL_ERR(priv, "blink1  blink2  ilink1  ilink2\n");
1379         IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1380                 ilink1, ilink2);
1381
1382 }
1383
1384 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1385
1386 /**
1387  * iwl_print_event_log - Dump error event log to syslog
1388  *
1389  */
1390 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1391                                 u32 num_events, u32 mode)
1392 {
1393         u32 i;
1394         u32 base;       /* SRAM byte address of event log header */
1395         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1396         u32 ptr;        /* SRAM byte address of log data */
1397         u32 ev, time, data; /* event log data */
1398
1399         if (num_events == 0)
1400                 return;
1401         if (priv->ucode_type == UCODE_INIT)
1402                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1403         else
1404                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1405
1406         if (mode == 0)
1407                 event_size = 2 * sizeof(u32);
1408         else
1409                 event_size = 3 * sizeof(u32);
1410
1411         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1412
1413         /* "time" is actually "data" for mode 0 (no timestamp).
1414         * place event id # at far right for easier visual parsing. */
1415         for (i = 0; i < num_events; i++) {
1416                 ev = iwl_read_targ_mem(priv, ptr);
1417                 ptr += sizeof(u32);
1418                 time = iwl_read_targ_mem(priv, ptr);
1419                 ptr += sizeof(u32);
1420                 if (mode == 0) {
1421                         /* data, ev */
1422                         IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1423                 } else {
1424                         data = iwl_read_targ_mem(priv, ptr);
1425                         ptr += sizeof(u32);
1426                         IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1427                                         time, data, ev);
1428                 }
1429         }
1430 }
1431
1432 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1433 {
1434         u32 base;       /* SRAM byte address of event log header */
1435         u32 capacity;   /* event log capacity in # entries */
1436         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1437         u32 num_wraps;  /* # times uCode wrapped to top of log */
1438         u32 next_entry; /* index of next entry to be written by uCode */
1439         u32 size;       /* # entries that we'll print */
1440
1441         if (priv->ucode_type == UCODE_INIT)
1442                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1443         else
1444                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1445
1446         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1447                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1448                 return;
1449         }
1450
1451         /* event log header */
1452         capacity = iwl_read_targ_mem(priv, base);
1453         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1454         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1455         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1456
1457         size = num_wraps ? capacity : next_entry;
1458
1459         /* bail out if nothing in log */
1460         if (size == 0) {
1461                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1462                 return;
1463         }
1464
1465         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1466                         size, num_wraps);
1467
1468         /* if uCode has wrapped back to top of log, start at the oldest entry,
1469          * i.e the next one that uCode would fill. */
1470         if (num_wraps)
1471                 iwl_print_event_log(priv, next_entry,
1472                                         capacity - next_entry, mode);
1473         /* (then/else) start at top of log */
1474         iwl_print_event_log(priv, 0, next_entry, mode);
1475
1476 }
1477 #endif
1478 /**
1479  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1480  */
1481 void iwl_irq_handle_error(struct iwl_priv *priv)
1482 {
1483         /* Set the FW error flag -- cleared on iwl_down */
1484         set_bit(STATUS_FW_ERROR, &priv->status);
1485
1486         /* Cancel currently queued command. */
1487         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1488
1489 #ifdef CONFIG_IWLWIFI_DEBUG
1490         if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) {
1491                 iwl_dump_nic_error_log(priv);
1492                 iwl_dump_nic_event_log(priv);
1493                 iwl_print_rx_config_cmd(priv);
1494         }
1495 #endif
1496
1497         wake_up_interruptible(&priv->wait_command_queue);
1498
1499         /* Keep the restart process from trying to send host
1500          * commands by clearing the INIT status bit */
1501         clear_bit(STATUS_READY, &priv->status);
1502
1503         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1504                 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1505                           "Restarting adapter due to uCode error.\n");
1506
1507                 if (priv->cfg->mod_params->restart_fw)
1508                         queue_work(priv->workqueue, &priv->restart);
1509         }
1510 }
1511 EXPORT_SYMBOL(iwl_irq_handle_error);
1512
1513 void iwl_configure_filter(struct ieee80211_hw *hw,
1514                           unsigned int changed_flags,
1515                           unsigned int *total_flags,
1516                           int mc_count, struct dev_addr_list *mc_list)
1517 {
1518         struct iwl_priv *priv = hw->priv;
1519         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1520
1521         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1522                         changed_flags, *total_flags);
1523
1524         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1525                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1526                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
1527                 else
1528                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1529         }
1530         if (changed_flags & FIF_ALLMULTI) {
1531                 if (*total_flags & FIF_ALLMULTI)
1532                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1533                 else
1534                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1535         }
1536         if (changed_flags & FIF_CONTROL) {
1537                 if (*total_flags & FIF_CONTROL)
1538                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1539                 else
1540                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1541         }
1542         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1543                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1544                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1545                 else
1546                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1547         }
1548
1549         /* We avoid iwl_commit_rxon here to commit the new filter flags
1550          * since mac80211 will call ieee80211_hw_config immediately.
1551          * (mc_list is not supported at this time). Otherwise, we need to
1552          * queue a background iwl_commit_rxon work.
1553          */
1554
1555         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1556                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1557 }
1558 EXPORT_SYMBOL(iwl_configure_filter);
1559
1560 int iwl_setup_mac(struct iwl_priv *priv)
1561 {
1562         int ret;
1563         struct ieee80211_hw *hw = priv->hw;
1564         hw->rate_control_algorithm = "iwl-agn-rs";
1565
1566         /* Tell mac80211 our characteristics */
1567         hw->flags = IEEE80211_HW_SIGNAL_DBM |
1568                     IEEE80211_HW_NOISE_DBM |
1569                     IEEE80211_HW_AMPDU_AGGREGATION |
1570                     IEEE80211_HW_SPECTRUM_MGMT |
1571                     IEEE80211_HW_SUPPORTS_PS;
1572         hw->wiphy->interface_modes =
1573                 BIT(NL80211_IFTYPE_STATION) |
1574                 BIT(NL80211_IFTYPE_ADHOC);
1575
1576         hw->wiphy->custom_regulatory = true;
1577
1578         /* Firmware does not support this */
1579         hw->wiphy->disable_beacon_hints = true;
1580
1581         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1582         /* we create the 802.11 header and a zero-length SSID element */
1583         hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
1584
1585         /* Default value; 4 EDCA QOS priorities */
1586         hw->queues = 4;
1587
1588         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1589
1590         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1591                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1592                         &priv->bands[IEEE80211_BAND_2GHZ];
1593         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1594                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1595                         &priv->bands[IEEE80211_BAND_5GHZ];
1596
1597         ret = ieee80211_register_hw(priv->hw);
1598         if (ret) {
1599                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1600                 return ret;
1601         }
1602         priv->mac80211_registered = 1;
1603
1604         return 0;
1605 }
1606 EXPORT_SYMBOL(iwl_setup_mac);
1607
1608 int iwl_set_hw_params(struct iwl_priv *priv)
1609 {
1610         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1611         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1612         if (priv->cfg->mod_params->amsdu_size_8K)
1613                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1614         else
1615                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1616         priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1617
1618         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1619
1620         if (priv->cfg->mod_params->disable_11n)
1621                 priv->cfg->sku &= ~IWL_SKU_N;
1622
1623         /* Device-specific setup */
1624         return priv->cfg->ops->lib->set_hw_params(priv);
1625 }
1626 EXPORT_SYMBOL(iwl_set_hw_params);
1627
1628 int iwl_init_drv(struct iwl_priv *priv)
1629 {
1630         int ret;
1631
1632         priv->ibss_beacon = NULL;
1633
1634         spin_lock_init(&priv->lock);
1635         spin_lock_init(&priv->sta_lock);
1636         spin_lock_init(&priv->hcmd_lock);
1637
1638         INIT_LIST_HEAD(&priv->free_frames);
1639
1640         mutex_init(&priv->mutex);
1641
1642         /* Clear the driver's (not device's) station table */
1643         iwl_clear_stations_table(priv);
1644
1645         priv->data_retry_limit = -1;
1646         priv->ieee_channels = NULL;
1647         priv->ieee_rates = NULL;
1648         priv->band = IEEE80211_BAND_2GHZ;
1649
1650         priv->iw_mode = NL80211_IFTYPE_STATION;
1651
1652         priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
1653
1654         /* Choose which receivers/antennas to use */
1655         if (priv->cfg->ops->hcmd->set_rxon_chain)
1656                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1657
1658         iwl_init_scan_params(priv);
1659
1660         iwl_reset_qos(priv);
1661
1662         priv->qos_data.qos_active = 0;
1663         priv->qos_data.qos_cap.val = 0;
1664
1665         priv->rates_mask = IWL_RATES_MASK;
1666         /* If power management is turned on, default to CAM mode */
1667         priv->power_mode = IWL_POWER_MODE_CAM;
1668         priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
1669
1670         ret = iwl_init_channel_map(priv);
1671         if (ret) {
1672                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1673                 goto err;
1674         }
1675
1676         ret = iwlcore_init_geos(priv);
1677         if (ret) {
1678                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1679                 goto err_free_channel_map;
1680         }
1681         iwlcore_init_hw_rates(priv, priv->ieee_rates);
1682
1683         return 0;
1684
1685 err_free_channel_map:
1686         iwl_free_channel_map(priv);
1687 err:
1688         return ret;
1689 }
1690 EXPORT_SYMBOL(iwl_init_drv);
1691
1692 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1693 {
1694         int ret = 0;
1695         if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1696                 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1697                          tx_power,
1698                          IWL_TX_POWER_TARGET_POWER_MIN);
1699                 return -EINVAL;
1700         }
1701
1702         if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
1703                 IWL_WARN(priv, "Requested user TXPOWER %d above upper limit %d.\n",
1704                          tx_power,
1705                          IWL_TX_POWER_TARGET_POWER_MAX);
1706                 return -EINVAL;
1707         }
1708
1709         if (priv->tx_power_user_lmt != tx_power)
1710                 force = true;
1711
1712         priv->tx_power_user_lmt = tx_power;
1713
1714         /* if nic is not up don't send command */
1715         if (!iwl_is_ready_rf(priv))
1716                 return ret;
1717
1718         if (force && priv->cfg->ops->lib->send_tx_power)
1719                 ret = priv->cfg->ops->lib->send_tx_power(priv);
1720
1721         return ret;
1722 }
1723 EXPORT_SYMBOL(iwl_set_tx_power);
1724
1725 void iwl_uninit_drv(struct iwl_priv *priv)
1726 {
1727         iwl_calib_free_results(priv);
1728         iwlcore_free_geos(priv);
1729         iwl_free_channel_map(priv);
1730         kfree(priv->scan);
1731 }
1732 EXPORT_SYMBOL(iwl_uninit_drv);
1733
1734 #define ICT_COUNT (PAGE_SIZE/sizeof(u32))
1735
1736 /* Free dram table */
1737 void iwl_free_isr_ict(struct iwl_priv *priv)
1738 {
1739         if (priv->ict_tbl_vir) {
1740                 pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
1741                                         PAGE_SIZE, priv->ict_tbl_vir,
1742                                         priv->ict_tbl_dma);
1743                 priv->ict_tbl_vir = NULL;
1744         }
1745 }
1746 EXPORT_SYMBOL(iwl_free_isr_ict);
1747
1748
1749 /* allocate dram shared table it is a PAGE_SIZE aligned
1750  * also reset all data related to ICT table interrupt.
1751  */
1752 int iwl_alloc_isr_ict(struct iwl_priv *priv)
1753 {
1754
1755         if (priv->cfg->use_isr_legacy)
1756                 return 0;
1757         /* allocate shrared data table */
1758         priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
1759                                                   ICT_COUNT) + PAGE_SIZE,
1760                                                   &priv->ict_tbl_dma);
1761         if (!priv->ict_tbl_vir)
1762                 return -ENOMEM;
1763
1764         /* align table to PAGE_SIZE boundry */
1765         priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
1766
1767         IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
1768                              (unsigned long long)priv->ict_tbl_dma,
1769                              (unsigned long long)priv->aligned_ict_tbl_dma,
1770                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1771
1772         priv->ict_tbl =  priv->ict_tbl_vir +
1773                           (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
1774
1775         IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
1776                              priv->ict_tbl, priv->ict_tbl_vir,
1777                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1778
1779         /* reset table and index to all 0 */
1780         memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
1781         priv->ict_index = 0;
1782
1783         /* add periodic RX interrupt */
1784         priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
1785         return 0;
1786 }
1787 EXPORT_SYMBOL(iwl_alloc_isr_ict);
1788
1789 /* Device is going up inform it about using ICT interrupt table,
1790  * also we need to tell the driver to start using ICT interrupt.
1791  */
1792 int iwl_reset_ict(struct iwl_priv *priv)
1793 {
1794         u32 val;
1795         unsigned long flags;
1796
1797         if (!priv->ict_tbl_vir)
1798                 return 0;
1799
1800         spin_lock_irqsave(&priv->lock, flags);
1801         iwl_disable_interrupts(priv);
1802
1803         memset(&priv->ict_tbl[0],0, sizeof(u32) * ICT_COUNT);
1804
1805         val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
1806
1807         val |= CSR_DRAM_INT_TBL_ENABLE;
1808         val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
1809
1810         IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
1811                         "aligned dma address %Lx\n",
1812                         val, (unsigned long long)priv->aligned_ict_tbl_dma);
1813
1814         iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
1815         priv->use_ict = true;
1816         priv->ict_index = 0;
1817         iwl_write32(priv, CSR_INT, priv->inta_mask);
1818         iwl_enable_interrupts(priv);
1819         spin_unlock_irqrestore(&priv->lock, flags);
1820
1821         return 0;
1822 }
1823 EXPORT_SYMBOL(iwl_reset_ict);
1824
1825 /* Device is going down disable ict interrupt usage */
1826 void iwl_disable_ict(struct iwl_priv *priv)
1827 {
1828         unsigned long flags;
1829
1830         spin_lock_irqsave(&priv->lock, flags);
1831         priv->use_ict = false;
1832         spin_unlock_irqrestore(&priv->lock, flags);
1833 }
1834 EXPORT_SYMBOL(iwl_disable_ict);
1835
1836 /* interrupt handler using ict table, with this interrupt driver will
1837  * stop using INTA register to get device's interrupt, reading this register
1838  * is expensive, device will write interrupts in ICT dram table, increment
1839  * index then will fire interrupt to driver, driver will OR all ICT table
1840  * entries from current index up to table entry with 0 value. the result is
1841  * the interrupt we need to service, driver will set the entries back to 0 and
1842  * set index.
1843  */
1844 irqreturn_t iwl_isr_ict(int irq, void *data)
1845 {
1846         struct iwl_priv *priv = data;
1847         u32 inta, inta_mask;
1848         u32 val = 0;
1849
1850         if (!priv)
1851                 return IRQ_NONE;
1852
1853         /* dram interrupt table not set yet,
1854          * use legacy interrupt.
1855          */
1856         if (!priv->use_ict)
1857                 return iwl_isr(irq, data);
1858
1859         spin_lock(&priv->lock);
1860
1861         /* Disable (but don't clear!) interrupts here to avoid
1862          * back-to-back ISRs and sporadic interrupts from our NIC.
1863          * If we have something to service, the tasklet will re-enable ints.
1864          * If we *don't* have something, we'll re-enable before leaving here.
1865          */
1866         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1867         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1868
1869
1870         /* Ignore interrupt if there's nothing in NIC to service.
1871          * This may be due to IRQ shared with another device,
1872          * or due to sporadic interrupts thrown from our NIC. */
1873         if (!priv->ict_tbl[priv->ict_index]) {
1874                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1875                 goto none;
1876         }
1877
1878         /* read all entries that not 0 start with ict_index */
1879         while (priv->ict_tbl[priv->ict_index]) {
1880
1881                 val |= priv->ict_tbl[priv->ict_index];
1882                 IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1883                                         priv->ict_index,
1884                                         priv->ict_tbl[priv->ict_index]);
1885                 priv->ict_tbl[priv->ict_index] = 0;
1886                 priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1887                                                                 ICT_COUNT);
1888
1889         }
1890
1891         /* We should not get this value, just ignore it. */
1892         if (val == 0xffffffff)
1893                 val = 0;
1894
1895         inta = (0xff & val) | ((0xff00 & val) << 16);
1896         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
1897                         inta, inta_mask, val);
1898
1899         inta &= priv->inta_mask;
1900         priv->inta |= inta;
1901
1902         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1903         if (likely(inta))
1904                 tasklet_schedule(&priv->irq_tasklet);
1905         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
1906                 /* Allow interrupt if was disabled by this handler and
1907                  * no tasklet was schedules, We should not enable interrupt,
1908                  * tasklet will enable it.
1909                  */
1910                 iwl_enable_interrupts(priv);
1911         }
1912
1913         spin_unlock(&priv->lock);
1914         return IRQ_HANDLED;
1915
1916  none:
1917         /* re-enable interrupts here since we don't have anything to service.
1918          * only Re-enable if disabled by irq.
1919          */
1920         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1921                 iwl_enable_interrupts(priv);
1922
1923         spin_unlock(&priv->lock);
1924         return IRQ_NONE;
1925 }
1926 EXPORT_SYMBOL(iwl_isr_ict);
1927
1928
1929 static irqreturn_t iwl_isr(int irq, void *data)
1930 {
1931         struct iwl_priv *priv = data;
1932         u32 inta, inta_mask;
1933 #ifdef CONFIG_IWLWIFI_DEBUG
1934         u32 inta_fh;
1935 #endif
1936         if (!priv)
1937                 return IRQ_NONE;
1938
1939         spin_lock(&priv->lock);
1940
1941         /* Disable (but don't clear!) interrupts here to avoid
1942          *    back-to-back ISRs and sporadic interrupts from our NIC.
1943          * If we have something to service, the tasklet will re-enable ints.
1944          * If we *don't* have something, we'll re-enable before leaving here. */
1945         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1946         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1947
1948         /* Discover which interrupts are active/pending */
1949         inta = iwl_read32(priv, CSR_INT);
1950
1951         /* Ignore interrupt if there's nothing in NIC to service.
1952          * This may be due to IRQ shared with another device,
1953          * or due to sporadic interrupts thrown from our NIC. */
1954         if (!inta) {
1955                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1956                 goto none;
1957         }
1958
1959         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1960                 /* Hardware disappeared. It might have already raised
1961                  * an interrupt */
1962                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1963                 goto unplugged;
1964         }
1965
1966 #ifdef CONFIG_IWLWIFI_DEBUG
1967         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1968                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1969                 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
1970                               "fh 0x%08x\n", inta, inta_mask, inta_fh);
1971         }
1972 #endif
1973
1974         priv->inta |= inta;
1975         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1976         if (likely(inta))
1977                 tasklet_schedule(&priv->irq_tasklet);
1978         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1979                 iwl_enable_interrupts(priv);
1980
1981  unplugged:
1982         spin_unlock(&priv->lock);
1983         return IRQ_HANDLED;
1984
1985  none:
1986         /* re-enable interrupts here since we don't have anything to service. */
1987         /* only Re-enable if diabled by irq  and no schedules tasklet. */
1988         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1989                 iwl_enable_interrupts(priv);
1990
1991         spin_unlock(&priv->lock);
1992         return IRQ_NONE;
1993 }
1994
1995 irqreturn_t iwl_isr_legacy(int irq, void *data)
1996 {
1997         struct iwl_priv *priv = data;
1998         u32 inta, inta_mask;
1999         u32 inta_fh;
2000         if (!priv)
2001                 return IRQ_NONE;
2002
2003         spin_lock(&priv->lock);
2004
2005         /* Disable (but don't clear!) interrupts here to avoid
2006          *    back-to-back ISRs and sporadic interrupts from our NIC.
2007          * If we have something to service, the tasklet will re-enable ints.
2008          * If we *don't* have something, we'll re-enable before leaving here. */
2009         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
2010         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2011
2012         /* Discover which interrupts are active/pending */
2013         inta = iwl_read32(priv, CSR_INT);
2014         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2015
2016         /* Ignore interrupt if there's nothing in NIC to service.
2017          * This may be due to IRQ shared with another device,
2018          * or due to sporadic interrupts thrown from our NIC. */
2019         if (!inta && !inta_fh) {
2020                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
2021                 goto none;
2022         }
2023
2024         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2025                 /* Hardware disappeared. It might have already raised
2026                  * an interrupt */
2027                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
2028                 goto unplugged;
2029         }
2030
2031         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2032                       inta, inta_mask, inta_fh);
2033
2034         inta &= ~CSR_INT_BIT_SCD;
2035
2036         /* iwl_irq_tasklet() will service interrupts and re-enable them */
2037         if (likely(inta || inta_fh))
2038                 tasklet_schedule(&priv->irq_tasklet);
2039
2040  unplugged:
2041         spin_unlock(&priv->lock);
2042         return IRQ_HANDLED;
2043
2044  none:
2045         /* re-enable interrupts here since we don't have anything to service. */
2046         /* only Re-enable if diabled by irq */
2047         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2048                 iwl_enable_interrupts(priv);
2049         spin_unlock(&priv->lock);
2050         return IRQ_NONE;
2051 }
2052 EXPORT_SYMBOL(iwl_isr_legacy);
2053
2054 int iwl_send_bt_config(struct iwl_priv *priv)
2055 {
2056         struct iwl_bt_cmd bt_cmd = {
2057                 .flags = 3,
2058                 .lead_time = 0xAA,
2059                 .max_kill = 1,
2060                 .kill_ack_mask = 0,
2061                 .kill_cts_mask = 0,
2062         };
2063
2064         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
2065                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
2066 }
2067 EXPORT_SYMBOL(iwl_send_bt_config);
2068
2069 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
2070 {
2071         u32 stat_flags = 0;
2072         struct iwl_host_cmd cmd = {
2073                 .id = REPLY_STATISTICS_CMD,
2074                 .flags = flags,
2075                 .len = sizeof(stat_flags),
2076                 .data = (u8 *) &stat_flags,
2077         };
2078         return iwl_send_cmd(priv, &cmd);
2079 }
2080 EXPORT_SYMBOL(iwl_send_statistics_request);
2081
2082 /**
2083  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
2084  *   using sample data 100 bytes apart.  If these sample points are good,
2085  *   it's a pretty good bet that everything between them is good, too.
2086  */
2087 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2088 {
2089         u32 val;
2090         int ret = 0;
2091         u32 errcnt = 0;
2092         u32 i;
2093
2094         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2095
2096         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2097                 /* read data comes through single port, auto-incr addr */
2098                 /* NOTE: Use the debugless read so we don't flood kernel log
2099                  * if IWL_DL_IO is set */
2100                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2101                         i + IWL49_RTC_INST_LOWER_BOUND);
2102                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2103                 if (val != le32_to_cpu(*image)) {
2104                         ret = -EIO;
2105                         errcnt++;
2106                         if (errcnt >= 3)
2107                                 break;
2108                 }
2109         }
2110
2111         return ret;
2112 }
2113
2114 /**
2115  * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
2116  *     looking at all data.
2117  */
2118 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
2119                                  u32 len)
2120 {
2121         u32 val;
2122         u32 save_len = len;
2123         int ret = 0;
2124         u32 errcnt;
2125
2126         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2127
2128         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2129                            IWL49_RTC_INST_LOWER_BOUND);
2130
2131         errcnt = 0;
2132         for (; len > 0; len -= sizeof(u32), image++) {
2133                 /* read data comes through single port, auto-incr addr */
2134                 /* NOTE: Use the debugless read so we don't flood kernel log
2135                  * if IWL_DL_IO is set */
2136                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2137                 if (val != le32_to_cpu(*image)) {
2138                         IWL_ERR(priv, "uCode INST section is invalid at "
2139                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2140                                   save_len - len, val, le32_to_cpu(*image));
2141                         ret = -EIO;
2142                         errcnt++;
2143                         if (errcnt >= 20)
2144                                 break;
2145                 }
2146         }
2147
2148         if (!errcnt)
2149                 IWL_DEBUG_INFO(priv,
2150                     "ucode image in INSTRUCTION memory is good\n");
2151
2152         return ret;
2153 }
2154
2155 /**
2156  * iwl_verify_ucode - determine which instruction image is in SRAM,
2157  *    and verify its contents
2158  */
2159 int iwl_verify_ucode(struct iwl_priv *priv)
2160 {
2161         __le32 *image;
2162         u32 len;
2163         int ret;
2164
2165         /* Try bootstrap */
2166         image = (__le32 *)priv->ucode_boot.v_addr;
2167         len = priv->ucode_boot.len;
2168         ret = iwlcore_verify_inst_sparse(priv, image, len);
2169         if (!ret) {
2170                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2171                 return 0;
2172         }
2173
2174         /* Try initialize */
2175         image = (__le32 *)priv->ucode_init.v_addr;
2176         len = priv->ucode_init.len;
2177         ret = iwlcore_verify_inst_sparse(priv, image, len);
2178         if (!ret) {
2179                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2180                 return 0;
2181         }
2182
2183         /* Try runtime/protocol */
2184         image = (__le32 *)priv->ucode_code.v_addr;
2185         len = priv->ucode_code.len;
2186         ret = iwlcore_verify_inst_sparse(priv, image, len);
2187         if (!ret) {
2188                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2189                 return 0;
2190         }
2191
2192         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2193
2194         /* Since nothing seems to match, show first several data entries in
2195          * instruction SRAM, so maybe visual inspection will give a clue.
2196          * Selection of bootstrap image (vs. other images) is arbitrary. */
2197         image = (__le32 *)priv->ucode_boot.v_addr;
2198         len = priv->ucode_boot.len;
2199         ret = iwl_verify_inst_full(priv, image, len);
2200
2201         return ret;
2202 }
2203 EXPORT_SYMBOL(iwl_verify_ucode);
2204
2205
2206 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2207 {
2208         struct iwl_ct_kill_config cmd;
2209         struct iwl_ct_kill_throttling_config adv_cmd;
2210         unsigned long flags;
2211         int ret = 0;
2212
2213         spin_lock_irqsave(&priv->lock, flags);
2214         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2215                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2216         spin_unlock_irqrestore(&priv->lock, flags);
2217         priv->thermal_throttle.ct_kill_toggle = false;
2218
2219         switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
2220         case CSR_HW_REV_TYPE_1000:
2221         case CSR_HW_REV_TYPE_6x00:
2222         case CSR_HW_REV_TYPE_6x50:
2223                 adv_cmd.critical_temperature_enter =
2224                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2225                 adv_cmd.critical_temperature_exit =
2226                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2227
2228                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2229                                        sizeof(adv_cmd), &adv_cmd);
2230                 break;
2231         default:
2232                 cmd.critical_temperature_R =
2233                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2234
2235                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2236                                        sizeof(cmd), &cmd);
2237                 break;
2238         }
2239         ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2240                                sizeof(cmd), &cmd);
2241         if (ret)
2242                 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2243         else
2244                 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD succeeded, "
2245                         "critical temperature is %d\n",
2246                         cmd.critical_temperature_R);
2247 }
2248 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2249
2250
2251 /*
2252  * CARD_STATE_CMD
2253  *
2254  * Use: Sets the device's internal card state to enable, disable, or halt
2255  *
2256  * When in the 'enable' state the card operates as normal.
2257  * When in the 'disable' state, the card enters into a low power mode.
2258  * When in the 'halt' state, the card is shut down and must be fully
2259  * restarted to come back on.
2260  */
2261 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2262 {
2263         struct iwl_host_cmd cmd = {
2264                 .id = REPLY_CARD_STATE_CMD,
2265                 .len = sizeof(u32),
2266                 .data = &flags,
2267                 .flags = meta_flag,
2268         };
2269
2270         return iwl_send_cmd(priv, &cmd);
2271 }
2272
2273 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2274                            struct iwl_rx_mem_buffer *rxb)
2275 {
2276 #ifdef CONFIG_IWLWIFI_DEBUG
2277         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2278         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2279         IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2280                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2281 #endif
2282 }
2283 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2284
2285 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2286                                       struct iwl_rx_mem_buffer *rxb)
2287 {
2288         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2289         IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2290                         "notification for %s:\n",
2291                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2292         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2293 }
2294 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2295
2296 void iwl_rx_reply_error(struct iwl_priv *priv,
2297                         struct iwl_rx_mem_buffer *rxb)
2298 {
2299         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2300
2301         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2302                 "seq 0x%04X ser 0x%08X\n",
2303                 le32_to_cpu(pkt->u.err_resp.error_type),
2304                 get_cmd_string(pkt->u.err_resp.cmd_id),
2305                 pkt->u.err_resp.cmd_id,
2306                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2307                 le32_to_cpu(pkt->u.err_resp.error_info));
2308 }
2309 EXPORT_SYMBOL(iwl_rx_reply_error);
2310
2311 void iwl_clear_isr_stats(struct iwl_priv *priv)
2312 {
2313         memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2314 }
2315
2316 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2317                            const struct ieee80211_tx_queue_params *params)
2318 {
2319         struct iwl_priv *priv = hw->priv;
2320         unsigned long flags;
2321         int q;
2322
2323         IWL_DEBUG_MAC80211(priv, "enter\n");
2324
2325         if (!iwl_is_ready_rf(priv)) {
2326                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2327                 return -EIO;
2328         }
2329
2330         if (queue >= AC_NUM) {
2331                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2332                 return 0;
2333         }
2334
2335         q = AC_NUM - 1 - queue;
2336
2337         spin_lock_irqsave(&priv->lock, flags);
2338
2339         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2340         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2341         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2342         priv->qos_data.def_qos_parm.ac[q].edca_txop =
2343                         cpu_to_le16((params->txop * 32));
2344
2345         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2346         priv->qos_data.qos_active = 1;
2347
2348         if (priv->iw_mode == NL80211_IFTYPE_AP)
2349                 iwl_activate_qos(priv, 1);
2350         else if (priv->assoc_id && iwl_is_associated(priv))
2351                 iwl_activate_qos(priv, 0);
2352
2353         spin_unlock_irqrestore(&priv->lock, flags);
2354
2355         IWL_DEBUG_MAC80211(priv, "leave\n");
2356         return 0;
2357 }
2358 EXPORT_SYMBOL(iwl_mac_conf_tx);
2359
2360 static void iwl_ht_conf(struct iwl_priv *priv,
2361                             struct ieee80211_bss_conf *bss_conf)
2362 {
2363         struct ieee80211_sta_ht_cap *ht_conf;
2364         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
2365         struct ieee80211_sta *sta;
2366
2367         IWL_DEBUG_MAC80211(priv, "enter: \n");
2368
2369         if (!iwl_conf->is_ht)
2370                 return;
2371
2372
2373         /*
2374          * It is totally wrong to base global information on something
2375          * that is valid only when associated, alas, this driver works
2376          * that way and I don't know how to fix it.
2377          */
2378
2379         rcu_read_lock();
2380         sta = ieee80211_find_sta(priv->hw, priv->bssid);
2381         if (!sta) {
2382                 rcu_read_unlock();
2383                 return;
2384         }
2385         ht_conf = &sta->ht_cap;
2386
2387         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
2388                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
2389         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
2390                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
2391
2392         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
2393         iwl_conf->max_amsdu_size =
2394                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
2395
2396         iwl_conf->supported_chan_width =
2397                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
2398
2399         /*
2400          * XXX: The HT configuration needs to be moved into iwl_mac_config()
2401          *      to be done there correctly.
2402          */
2403
2404         iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
2405         if (conf_is_ht40_minus(&priv->hw->conf))
2406                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2407         else if (conf_is_ht40_plus(&priv->hw->conf))
2408                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2409
2410         /* If no above or below channel supplied disable HT40 channel */
2411         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
2412             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
2413                 iwl_conf->supported_chan_width = 0;
2414
2415         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
2416
2417         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
2418
2419         iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
2420         iwl_conf->ht_protection =
2421                 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2422         iwl_conf->non_GF_STA_present =
2423                 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2424
2425         rcu_read_unlock();
2426
2427         IWL_DEBUG_MAC80211(priv, "leave\n");
2428 }
2429
2430 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2431 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2432                           struct ieee80211_vif *vif,
2433                           struct ieee80211_bss_conf *bss_conf,
2434                           u32 changes)
2435 {
2436         struct iwl_priv *priv = hw->priv;
2437         int ret;
2438
2439         IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2440
2441         if (!iwl_is_alive(priv))
2442                 return;
2443
2444         mutex_lock(&priv->mutex);
2445
2446         if (changes & BSS_CHANGED_BEACON &&
2447             priv->iw_mode == NL80211_IFTYPE_AP) {
2448                 dev_kfree_skb(priv->ibss_beacon);
2449                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2450         }
2451
2452         if (changes & BSS_CHANGED_BEACON_INT) {
2453                 priv->beacon_int = bss_conf->beacon_int;
2454                 /* TODO: in AP mode, do something to make this take effect */
2455         }
2456
2457         if (changes & BSS_CHANGED_BSSID) {
2458                 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2459
2460                 /*
2461                  * If there is currently a HW scan going on in the
2462                  * background then we need to cancel it else the RXON
2463                  * below/in post_associate will fail.
2464                  */
2465                 if (iwl_scan_cancel_timeout(priv, 100)) {
2466                         IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2467                         IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2468                         mutex_unlock(&priv->mutex);
2469                         return;
2470                 }
2471
2472                 /* mac80211 only sets assoc when in STATION mode */
2473                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2474                     bss_conf->assoc) {
2475                         memcpy(priv->staging_rxon.bssid_addr,
2476                                bss_conf->bssid, ETH_ALEN);
2477
2478                         /* currently needed in a few places */
2479                         memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2480                 } else {
2481                         priv->staging_rxon.filter_flags &=
2482                                 ~RXON_FILTER_ASSOC_MSK;
2483                 }
2484
2485         }
2486
2487         /*
2488          * This needs to be after setting the BSSID in case
2489          * mac80211 decides to do both changes at once because
2490          * it will invoke post_associate.
2491          */
2492         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2493             changes & BSS_CHANGED_BEACON) {
2494                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2495
2496                 if (beacon)
2497                         iwl_mac_beacon_update(hw, beacon);
2498         }
2499
2500         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2501                 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2502                                    bss_conf->use_short_preamble);
2503                 if (bss_conf->use_short_preamble)
2504                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2505                 else
2506                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2507         }
2508
2509         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2510                 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2511                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2512                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2513                 else
2514                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2515         }
2516
2517         if (changes & BSS_CHANGED_BASIC_RATES) {
2518                 /* XXX use this information
2519                  *
2520                  * To do that, remove code from iwl_set_rate() and put something
2521                  * like this here:
2522                  *
2523                 if (A-band)
2524                         priv->staging_rxon.ofdm_basic_rates =
2525                                 bss_conf->basic_rates;
2526                 else
2527                         priv->staging_rxon.ofdm_basic_rates =
2528                                 bss_conf->basic_rates >> 4;
2529                         priv->staging_rxon.cck_basic_rates =
2530                                 bss_conf->basic_rates & 0xF;
2531                  */
2532         }
2533
2534         if (changes & BSS_CHANGED_HT) {
2535                 iwl_ht_conf(priv, bss_conf);
2536
2537                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2538                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2539         }
2540
2541         if (changes & BSS_CHANGED_ASSOC) {
2542                 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2543                 if (bss_conf->assoc) {
2544                         priv->assoc_id = bss_conf->aid;
2545                         priv->beacon_int = bss_conf->beacon_int;
2546                         priv->power_data.dtim_period = bss_conf->dtim_period;
2547                         priv->timestamp = bss_conf->timestamp;
2548                         priv->assoc_capability = bss_conf->assoc_capability;
2549
2550                         /*
2551                          * We have just associated, don't start scan too early
2552                          * leave time for EAPOL exchange to complete.
2553                          *
2554                          * XXX: do this in mac80211
2555                          */
2556                         priv->next_scan_jiffies = jiffies +
2557                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2558                         if (!iwl_is_rfkill(priv))
2559                                 priv->cfg->ops->lib->post_associate(priv);
2560                 } else
2561                         priv->assoc_id = 0;
2562
2563         }
2564
2565         if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2566                 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2567                                    changes);
2568                 ret = iwl_send_rxon_assoc(priv);
2569                 if (!ret) {
2570                         /* Sync active_rxon with latest change. */
2571                         memcpy((void *)&priv->active_rxon,
2572                                 &priv->staging_rxon,
2573                                 sizeof(struct iwl_rxon_cmd));
2574                 }
2575         }
2576
2577         mutex_unlock(&priv->mutex);
2578
2579         IWL_DEBUG_MAC80211(priv, "leave\n");
2580 }
2581 EXPORT_SYMBOL(iwl_bss_info_changed);
2582
2583 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2584 {
2585         struct iwl_priv *priv = hw->priv;
2586         unsigned long flags;
2587         __le64 timestamp;
2588
2589         IWL_DEBUG_MAC80211(priv, "enter\n");
2590
2591         if (!iwl_is_ready_rf(priv)) {
2592                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2593                 return -EIO;
2594         }
2595
2596         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2597                 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2598                 return -EIO;
2599         }
2600
2601         spin_lock_irqsave(&priv->lock, flags);
2602
2603         if (priv->ibss_beacon)
2604                 dev_kfree_skb(priv->ibss_beacon);
2605
2606         priv->ibss_beacon = skb;
2607
2608         priv->assoc_id = 0;
2609         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2610         priv->timestamp = le64_to_cpu(timestamp);
2611
2612         IWL_DEBUG_MAC80211(priv, "leave\n");
2613         spin_unlock_irqrestore(&priv->lock, flags);
2614
2615         iwl_reset_qos(priv);
2616
2617         priv->cfg->ops->lib->post_associate(priv);
2618
2619
2620         return 0;
2621 }
2622 EXPORT_SYMBOL(iwl_mac_beacon_update);
2623
2624 int iwl_set_mode(struct iwl_priv *priv, int mode)
2625 {
2626         if (mode == NL80211_IFTYPE_ADHOC) {
2627                 const struct iwl_channel_info *ch_info;
2628
2629                 ch_info = iwl_get_channel_info(priv,
2630                         priv->band,
2631                         le16_to_cpu(priv->staging_rxon.channel));
2632
2633                 if (!ch_info || !is_channel_ibss(ch_info)) {
2634                         IWL_ERR(priv, "channel %d not IBSS channel\n",
2635                                   le16_to_cpu(priv->staging_rxon.channel));
2636                         return -EINVAL;
2637                 }
2638         }
2639
2640         iwl_connection_init_rx_config(priv, mode);
2641
2642         if (priv->cfg->ops->hcmd->set_rxon_chain)
2643                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2644
2645         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2646
2647         iwl_clear_stations_table(priv);
2648
2649         /* dont commit rxon if rf-kill is on*/
2650         if (!iwl_is_ready_rf(priv))
2651                 return -EAGAIN;
2652
2653         iwlcore_commit_rxon(priv);
2654
2655         return 0;
2656 }
2657 EXPORT_SYMBOL(iwl_set_mode);
2658
2659 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2660                                  struct ieee80211_if_init_conf *conf)
2661 {
2662         struct iwl_priv *priv = hw->priv;
2663         unsigned long flags;
2664
2665         IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2666
2667         if (priv->vif) {
2668                 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2669                 return -EOPNOTSUPP;
2670         }
2671
2672         spin_lock_irqsave(&priv->lock, flags);
2673         priv->vif = conf->vif;
2674         priv->iw_mode = conf->type;
2675
2676         spin_unlock_irqrestore(&priv->lock, flags);
2677
2678         mutex_lock(&priv->mutex);
2679
2680         if (conf->mac_addr) {
2681                 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2682                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2683         }
2684
2685         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2686                 /* we are not ready, will run again when ready */
2687                 set_bit(STATUS_MODE_PENDING, &priv->status);
2688
2689         mutex_unlock(&priv->mutex);
2690
2691         IWL_DEBUG_MAC80211(priv, "leave\n");
2692         return 0;
2693 }
2694 EXPORT_SYMBOL(iwl_mac_add_interface);
2695
2696 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2697                                      struct ieee80211_if_init_conf *conf)
2698 {
2699         struct iwl_priv *priv = hw->priv;
2700
2701         IWL_DEBUG_MAC80211(priv, "enter\n");
2702
2703         mutex_lock(&priv->mutex);
2704
2705         if (iwl_is_ready_rf(priv)) {
2706                 iwl_scan_cancel_timeout(priv, 100);
2707                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2708                 iwlcore_commit_rxon(priv);
2709         }
2710         if (priv->vif == conf->vif) {
2711                 priv->vif = NULL;
2712                 memset(priv->bssid, 0, ETH_ALEN);
2713         }
2714         mutex_unlock(&priv->mutex);
2715
2716         IWL_DEBUG_MAC80211(priv, "leave\n");
2717
2718 }
2719 EXPORT_SYMBOL(iwl_mac_remove_interface);
2720
2721 /**
2722  * iwl_mac_config - mac80211 config callback
2723  *
2724  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2725  * be set inappropriately and the driver currently sets the hardware up to
2726  * use it whenever needed.
2727  */
2728 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2729 {
2730         struct iwl_priv *priv = hw->priv;
2731         const struct iwl_channel_info *ch_info;
2732         struct ieee80211_conf *conf = &hw->conf;
2733         unsigned long flags = 0;
2734         int ret = 0;
2735         u16 ch;
2736         int scan_active = 0;
2737
2738         mutex_lock(&priv->mutex);
2739
2740         IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2741                                         conf->channel->hw_value, changed);
2742
2743         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2744                         test_bit(STATUS_SCANNING, &priv->status))) {
2745                 scan_active = 1;
2746                 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2747         }
2748
2749
2750         /* during scanning mac80211 will delay channel setting until
2751          * scan finish with changed = 0
2752          */
2753         if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2754                 if (scan_active)
2755                         goto set_ch_out;
2756
2757                 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2758                 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2759                 if (!is_channel_valid(ch_info)) {
2760                         IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2761                         ret = -EINVAL;
2762                         goto set_ch_out;
2763                 }
2764
2765                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2766                         !is_channel_ibss(ch_info)) {
2767                         IWL_ERR(priv, "channel %d in band %d not "
2768                                 "IBSS channel\n",
2769                                 conf->channel->hw_value, conf->channel->band);
2770                         ret = -EINVAL;
2771                         goto set_ch_out;
2772                 }
2773
2774                 priv->current_ht_config.is_ht = conf_is_ht(conf);
2775
2776                 spin_lock_irqsave(&priv->lock, flags);
2777
2778
2779                 /* if we are switching from ht to 2.4 clear flags
2780                  * from any ht related info since 2.4 does not
2781                  * support ht */
2782                 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2783                         priv->staging_rxon.flags = 0;
2784
2785                 iwl_set_rxon_channel(priv, conf->channel);
2786
2787                 iwl_set_flags_for_band(priv, conf->channel->band);
2788                 spin_unlock_irqrestore(&priv->lock, flags);
2789  set_ch_out:
2790                 /* The list of supported rates and rate mask can be different
2791                  * for each band; since the band may have changed, reset
2792                  * the rate mask to what mac80211 lists */
2793                 iwl_set_rate(priv);
2794         }
2795
2796         if (changed & IEEE80211_CONF_CHANGE_PS &&
2797             priv->iw_mode == NL80211_IFTYPE_STATION) {
2798                 priv->power_data.power_disabled =
2799                         !(conf->flags & IEEE80211_CONF_PS);
2800                 ret = iwl_power_update_mode(priv, 0);
2801                 if (ret)
2802                         IWL_DEBUG_MAC80211(priv, "Error setting power level\n");
2803         }
2804
2805         if (changed & IEEE80211_CONF_CHANGE_POWER) {
2806                 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2807                         priv->tx_power_user_lmt, conf->power_level);
2808
2809                 iwl_set_tx_power(priv, conf->power_level, false);
2810         }
2811
2812         /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2813         if (priv->cfg->ops->hcmd->set_rxon_chain)
2814                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2815
2816         if (!iwl_is_ready(priv)) {
2817                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2818                 goto out;
2819         }
2820
2821         if (scan_active)
2822                 goto out;
2823
2824         if (memcmp(&priv->active_rxon,
2825                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2826                 iwlcore_commit_rxon(priv);
2827         else
2828                 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2829
2830
2831 out:
2832         IWL_DEBUG_MAC80211(priv, "leave\n");
2833         mutex_unlock(&priv->mutex);
2834         return ret;
2835 }
2836 EXPORT_SYMBOL(iwl_mac_config);
2837
2838 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2839                          struct ieee80211_tx_queue_stats *stats)
2840 {
2841         struct iwl_priv *priv = hw->priv;
2842         int i, avail;
2843         struct iwl_tx_queue *txq;
2844         struct iwl_queue *q;
2845         unsigned long flags;
2846
2847         IWL_DEBUG_MAC80211(priv, "enter\n");
2848
2849         if (!iwl_is_ready_rf(priv)) {
2850                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2851                 return -EIO;
2852         }
2853
2854         spin_lock_irqsave(&priv->lock, flags);
2855
2856         for (i = 0; i < AC_NUM; i++) {
2857                 txq = &priv->txq[i];
2858                 q = &txq->q;
2859                 avail = iwl_queue_space(q);
2860
2861                 stats[i].len = q->n_window - avail;
2862                 stats[i].limit = q->n_window - q->high_mark;
2863                 stats[i].count = q->n_window;
2864
2865         }
2866         spin_unlock_irqrestore(&priv->lock, flags);
2867
2868         IWL_DEBUG_MAC80211(priv, "leave\n");
2869
2870         return 0;
2871 }
2872 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2873
2874 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2875 {
2876         struct iwl_priv *priv = hw->priv;
2877         unsigned long flags;
2878
2879         mutex_lock(&priv->mutex);
2880         IWL_DEBUG_MAC80211(priv, "enter\n");
2881
2882         spin_lock_irqsave(&priv->lock, flags);
2883         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
2884         spin_unlock_irqrestore(&priv->lock, flags);
2885
2886         iwl_reset_qos(priv);
2887
2888         spin_lock_irqsave(&priv->lock, flags);
2889         priv->assoc_id = 0;
2890         priv->assoc_capability = 0;
2891         priv->assoc_station_added = 0;
2892
2893         /* new association get rid of ibss beacon skb */
2894         if (priv->ibss_beacon)
2895                 dev_kfree_skb(priv->ibss_beacon);
2896
2897         priv->ibss_beacon = NULL;
2898
2899         priv->beacon_int = priv->vif->bss_conf.beacon_int;
2900         priv->timestamp = 0;
2901         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2902                 priv->beacon_int = 0;
2903
2904         spin_unlock_irqrestore(&priv->lock, flags);
2905
2906         if (!iwl_is_ready_rf(priv)) {
2907                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2908                 mutex_unlock(&priv->mutex);
2909                 return;
2910         }
2911
2912         /* we are restarting association process
2913          * clear RXON_FILTER_ASSOC_MSK bit
2914          */
2915         if (priv->iw_mode != NL80211_IFTYPE_AP) {
2916                 iwl_scan_cancel_timeout(priv, 100);
2917                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2918                 iwlcore_commit_rxon(priv);
2919         }
2920
2921         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2922                 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2923                 mutex_unlock(&priv->mutex);
2924                 return;
2925         }
2926
2927         iwl_set_rate(priv);
2928
2929         mutex_unlock(&priv->mutex);
2930
2931         IWL_DEBUG_MAC80211(priv, "leave\n");
2932 }
2933 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2934
2935 #ifdef CONFIG_IWLWIFI_DEBUGFS
2936
2937 #define IWL_TRAFFIC_DUMP_SIZE   (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2938
2939 void iwl_reset_traffic_log(struct iwl_priv *priv)
2940 {
2941         priv->tx_traffic_idx = 0;
2942         priv->rx_traffic_idx = 0;
2943         if (priv->tx_traffic)
2944                 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2945         if (priv->rx_traffic)
2946                 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2947 }
2948
2949 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2950 {
2951         u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2952
2953         if (iwl_debug_level & IWL_DL_TX) {
2954                 if (!priv->tx_traffic) {
2955                         priv->tx_traffic =
2956                                 kzalloc(traffic_size, GFP_KERNEL);
2957                         if (!priv->tx_traffic)
2958                                 return -ENOMEM;
2959                 }
2960         }
2961         if (iwl_debug_level & IWL_DL_RX) {
2962                 if (!priv->rx_traffic) {
2963                         priv->rx_traffic =
2964                                 kzalloc(traffic_size, GFP_KERNEL);
2965                         if (!priv->rx_traffic)
2966                                 return -ENOMEM;
2967                 }
2968         }
2969         iwl_reset_traffic_log(priv);
2970         return 0;
2971 }
2972 EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2973
2974 void iwl_free_traffic_mem(struct iwl_priv *priv)
2975 {
2976         kfree(priv->tx_traffic);
2977         priv->tx_traffic = NULL;
2978
2979         kfree(priv->rx_traffic);
2980         priv->rx_traffic = NULL;
2981 }
2982 EXPORT_SYMBOL(iwl_free_traffic_mem);
2983
2984 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
2985                       u16 length, struct ieee80211_hdr *header)
2986 {
2987         __le16 fc;
2988         u16 len;
2989
2990         if (likely(!(iwl_debug_level & IWL_DL_TX)))
2991                 return;
2992
2993         if (!priv->tx_traffic)
2994                 return;
2995
2996         fc = header->frame_control;
2997         if (ieee80211_is_data(fc)) {
2998                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2999                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
3000                 memcpy((priv->tx_traffic +
3001                        (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
3002                        header, len);
3003                 priv->tx_traffic_idx =
3004                         (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
3005         }
3006 }
3007 EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
3008
3009 void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
3010                       u16 length, struct ieee80211_hdr *header)
3011 {
3012         __le16 fc;
3013         u16 len;
3014
3015         if (likely(!(iwl_debug_level & IWL_DL_RX)))
3016                 return;
3017
3018         if (!priv->rx_traffic)
3019                 return;
3020
3021         fc = header->frame_control;
3022         if (ieee80211_is_data(fc)) {
3023                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
3024                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
3025                 memcpy((priv->rx_traffic +
3026                        (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
3027                        header, len);
3028                 priv->rx_traffic_idx =
3029                         (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
3030         }
3031 }
3032 EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
3033
3034 const char *get_mgmt_string(int cmd)
3035 {
3036         switch (cmd) {
3037                 IWL_CMD(MANAGEMENT_ASSOC_REQ);
3038                 IWL_CMD(MANAGEMENT_ASSOC_RESP);
3039                 IWL_CMD(MANAGEMENT_REASSOC_REQ);
3040                 IWL_CMD(MANAGEMENT_REASSOC_RESP);
3041                 IWL_CMD(MANAGEMENT_PROBE_REQ);
3042                 IWL_CMD(MANAGEMENT_PROBE_RESP);
3043                 IWL_CMD(MANAGEMENT_BEACON);
3044                 IWL_CMD(MANAGEMENT_ATIM);
3045                 IWL_CMD(MANAGEMENT_DISASSOC);
3046                 IWL_CMD(MANAGEMENT_AUTH);
3047                 IWL_CMD(MANAGEMENT_DEAUTH);
3048                 IWL_CMD(MANAGEMENT_ACTION);
3049         default:
3050                 return "UNKNOWN";
3051
3052         }
3053 }
3054
3055 const char *get_ctrl_string(int cmd)
3056 {
3057         switch (cmd) {
3058                 IWL_CMD(CONTROL_BACK_REQ);
3059                 IWL_CMD(CONTROL_BACK);
3060                 IWL_CMD(CONTROL_PSPOLL);
3061                 IWL_CMD(CONTROL_RTS);
3062                 IWL_CMD(CONTROL_CTS);
3063                 IWL_CMD(CONTROL_ACK);
3064                 IWL_CMD(CONTROL_CFEND);
3065                 IWL_CMD(CONTROL_CFENDACK);
3066         default:
3067                 return "UNKNOWN";
3068
3069         }
3070 }
3071
3072 void iwl_clear_tx_stats(struct iwl_priv *priv)
3073 {
3074         memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
3075
3076 }
3077
3078 void iwl_clear_rx_stats(struct iwl_priv *priv)
3079 {
3080         memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
3081 }
3082
3083 /*
3084  * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
3085  * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
3086  * Use debugFs to display the rx/rx_statistics
3087  * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
3088  * information will be recorded, but DATA pkt still will be recorded
3089  * for the reason of iwl_led.c need to control the led blinking based on
3090  * number of tx and rx data.
3091  *
3092  */
3093 void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
3094 {
3095         struct traffic_stats    *stats;
3096
3097         if (is_tx)
3098                 stats = &priv->tx_stats;
3099         else
3100                 stats = &priv->rx_stats;
3101
3102         if (ieee80211_is_mgmt(fc)) {
3103                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
3104                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
3105                         stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
3106                         break;
3107                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
3108                         stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
3109                         break;
3110                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
3111                         stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
3112                         break;
3113                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
3114                         stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
3115                         break;
3116                 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
3117                         stats->mgmt[MANAGEMENT_PROBE_REQ]++;
3118                         break;
3119                 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
3120                         stats->mgmt[MANAGEMENT_PROBE_RESP]++;
3121                         break;
3122                 case cpu_to_le16(IEEE80211_STYPE_BEACON):
3123                         stats->mgmt[MANAGEMENT_BEACON]++;
3124                         break;
3125                 case cpu_to_le16(IEEE80211_STYPE_ATIM):
3126                         stats->mgmt[MANAGEMENT_ATIM]++;
3127                         break;
3128                 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
3129                         stats->mgmt[MANAGEMENT_DISASSOC]++;
3130                         break;
3131                 case cpu_to_le16(IEEE80211_STYPE_AUTH):
3132                         stats->mgmt[MANAGEMENT_AUTH]++;
3133                         break;
3134                 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
3135                         stats->mgmt[MANAGEMENT_DEAUTH]++;
3136                         break;
3137                 case cpu_to_le16(IEEE80211_STYPE_ACTION):
3138                         stats->mgmt[MANAGEMENT_ACTION]++;
3139                         break;
3140                 }
3141         } else if (ieee80211_is_ctl(fc)) {
3142                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
3143                 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
3144                         stats->ctrl[CONTROL_BACK_REQ]++;
3145                         break;
3146                 case cpu_to_le16(IEEE80211_STYPE_BACK):
3147                         stats->ctrl[CONTROL_BACK]++;
3148                         break;
3149                 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
3150                         stats->ctrl[CONTROL_PSPOLL]++;
3151                         break;
3152                 case cpu_to_le16(IEEE80211_STYPE_RTS):
3153                         stats->ctrl[CONTROL_RTS]++;
3154                         break;
3155                 case cpu_to_le16(IEEE80211_STYPE_CTS):
3156                         stats->ctrl[CONTROL_CTS]++;
3157                         break;
3158                 case cpu_to_le16(IEEE80211_STYPE_ACK):
3159                         stats->ctrl[CONTROL_ACK]++;
3160                         break;
3161                 case cpu_to_le16(IEEE80211_STYPE_CFEND):
3162                         stats->ctrl[CONTROL_CFEND]++;
3163                         break;
3164                 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
3165                         stats->ctrl[CONTROL_CFENDACK]++;
3166                         break;
3167                 }
3168         } else {
3169                 /* data */
3170                 stats->data_cnt++;
3171                 stats->data_bytes += len;
3172         }
3173 }
3174 EXPORT_SYMBOL(iwl_update_stats);
3175
3176 #else
3177 void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
3178 {
3179         struct traffic_stats    *stats;
3180
3181         if (is_tx)
3182                 stats = &priv->tx_stats;
3183         else
3184                 stats = &priv->rx_stats;
3185
3186         if (ieee80211_is_data(fc)) {
3187                 /* data */
3188                 stats->data_bytes += len;
3189         }
3190 }
3191 #endif
3192
3193 #ifdef CONFIG_PM
3194
3195 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3196 {
3197         struct iwl_priv *priv = pci_get_drvdata(pdev);
3198
3199         /*
3200          * This function is called when system goes into suspend state
3201          * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
3202          * first but since iwl_mac_stop() has no knowledge of who the caller is,
3203          * it will not call apm_ops.stop() to stop the DMA operation.
3204          * Calling apm_ops.stop here to make sure we stop the DMA.
3205          */
3206         priv->cfg->ops->lib->apm_ops.stop(priv);
3207
3208         pci_save_state(pdev);
3209         pci_disable_device(pdev);
3210         pci_set_power_state(pdev, PCI_D3hot);
3211
3212         return 0;
3213 }
3214 EXPORT_SYMBOL(iwl_pci_suspend);
3215
3216 int iwl_pci_resume(struct pci_dev *pdev)
3217 {
3218         struct iwl_priv *priv = pci_get_drvdata(pdev);
3219         int ret;
3220
3221         pci_set_power_state(pdev, PCI_D0);
3222         ret = pci_enable_device(pdev);
3223         if (ret)
3224                 return ret;
3225         pci_restore_state(pdev);
3226         iwl_enable_interrupts(priv);
3227
3228         return 0;
3229 }
3230 EXPORT_SYMBOL(iwl_pci_resume);
3231
3232 #endif /* CONFIG_PM */