SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl-core.c

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