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-rfkill.h"
  40 #include "iwl-power.h"
  41 #include "iwl-sta.h"
  42
  43
  44 MODULE_DESCRIPTION("iwl core");
  45 MODULE_VERSION(IWLWIFI_VERSION);
  46 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  47 MODULE_LICENSE("GPL");
  48
  49 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np)    \
  50         [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,      \
  51                                     IWL_RATE_SISO_##s##M_PLCP, \
  52                                     IWL_RATE_MIMO2_##s##M_PLCP,\
  53                                     IWL_RATE_MIMO3_##s##M_PLCP,\
  54                                     IWL_RATE_##r##M_IEEE,      \
  55                                     IWL_RATE_##ip##M_INDEX,    \
  56                                     IWL_RATE_##in##M_INDEX,    \
  57                                     IWL_RATE_##rp##M_INDEX,    \
  58                                     IWL_RATE_##rn##M_INDEX,    \
  59                                     IWL_RATE_##pp##M_INDEX,    \
  60                                     IWL_RATE_##np##M_INDEX }
  61
  62 /*
  63  * Parameter order:
  64  *   rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
  65  *
  66  * If there isn't a valid next or previous rate then INV is used which
  67  * maps to IWL_RATE_INVALID
  68  *
  69  */
  70 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
  71         IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2),    /*  1mbps */
  72         IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5),          /*  2mbps */
  73         IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
  74         IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18),      /* 11mbps */
  75         IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
  76         IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11),       /*  9mbps */
  77         IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
  78         IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
  79         IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
  80         IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
  81         IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
  82         IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
  83         IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
  84         /* FIXME:RS:          ^^    should be INV (legacy) */
  85 };
  86 EXPORT_SYMBOL(iwl_rates);
  87
  88 /**
  89  * translate ucode response to mac80211 tx status control values
  90  */
  91 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
  92                                   struct ieee80211_tx_info *info)
  93 {
  94         int rate_index;
  95         struct ieee80211_tx_rate *r = &info->control.rates[0];
  96
  97         info->antenna_sel_tx =
  98                 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
  99         if (rate_n_flags & RATE_MCS_HT_MSK)
 100                 r->flags |= IEEE80211_TX_RC_MCS;
 101         if (rate_n_flags & RATE_MCS_GF_MSK)
 102                 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
 103         if (rate_n_flags & RATE_MCS_FAT_MSK)
 104                 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
 105         if (rate_n_flags & RATE_MCS_DUP_MSK)
 106                 r->flags |= IEEE80211_TX_RC_DUP_DATA;
 107         if (rate_n_flags & RATE_MCS_SGI_MSK)
 108                 r->flags |= IEEE80211_TX_RC_SHORT_GI;
 109         rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
 110         if (info->band == IEEE80211_BAND_5GHZ)
 111                 rate_index -= IWL_FIRST_OFDM_RATE;
 112         r->idx = rate_index;
 113 }
 114 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
 115
 116 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
 117 {
 118         int idx = 0;
 119
 120         /* HT rate format */
 121         if (rate_n_flags & RATE_MCS_HT_MSK) {
 122                 idx = (rate_n_flags & 0xff);
 123
 124                 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
 125                         idx = idx - IWL_RATE_MIMO3_6M_PLCP;
 126                 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
 127                         idx = idx - IWL_RATE_MIMO2_6M_PLCP;
 128
 129                 idx += IWL_FIRST_OFDM_RATE;
 130                 /* skip 9M not supported in ht*/
 131                 if (idx >= IWL_RATE_9M_INDEX)
 132                         idx += 1;
 133                 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
 134                         return idx;
 135
 136         /* legacy rate format, search for match in table */
 137         } else {
 138                 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
 139                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 140                                 return idx;
 141         }
 142
 143         return -1;
 144 }
 145 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
 146
 147 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
 148 {
 149         int i;
 150         u8 ind = ant;
 151         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 152                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 153                 if (priv->hw_params.valid_tx_ant & BIT(ind))
 154                         return ind;
 155         }
 156         return ant;
 157 }
 158
 159 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 160 EXPORT_SYMBOL(iwl_bcast_addr);
 161
 162
 163 /* This function both allocates and initializes hw and priv. */
 164 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
 165                 struct ieee80211_ops *hw_ops)
 166 {
 167         struct iwl_priv *priv;
 168
 169         /* mac80211 allocates memory for this device instance, including
 170          *   space for this driver's private structure */
 171         struct ieee80211_hw *hw =
 172                 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
 173         if (hw == NULL) {
 174                 printk(KERN_ERR "%s: Can not allocate network device\n",
 175                        cfg->name);
 176                 goto out;
 177         }
 178
 179         priv = hw->priv;
 180         priv->hw = hw;
 181
 182 out:
 183         return hw;
 184 }
 185 EXPORT_SYMBOL(iwl_alloc_all);
 186
 187 void iwl_hw_detect(struct iwl_priv *priv)
 188 {
 189         priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
 190         priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
 191         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
 192 }
 193 EXPORT_SYMBOL(iwl_hw_detect);
 194
 195 int iwl_hw_nic_init(struct iwl_priv *priv)
 196 {
 197         unsigned long flags;
 198         struct iwl_rx_queue *rxq = &priv->rxq;
 199         int ret;
 200
 201         /* nic_init */
 202         spin_lock_irqsave(&priv->lock, flags);
 203         priv->cfg->ops->lib->apm_ops.init(priv);
 204         iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
 205         spin_unlock_irqrestore(&priv->lock, flags);
 206
 207         ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
 208
 209         priv->cfg->ops->lib->apm_ops.config(priv);
 210
 211         /* Allocate the RX queue, or reset if it is already allocated */
 212         if (!rxq->bd) {
 213                 ret = iwl_rx_queue_alloc(priv);
 214                 if (ret) {
 215                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
 216                         return -ENOMEM;
 217                 }
 218         } else
 219                 iwl_rx_queue_reset(priv, rxq);
 220
 221         iwl_rx_replenish(priv);
 222
 223         iwl_rx_init(priv, rxq);
 224
 225         spin_lock_irqsave(&priv->lock, flags);
 226
 227         rxq->need_update = 1;
 228         iwl_rx_queue_update_write_ptr(priv, rxq);
 229
 230         spin_unlock_irqrestore(&priv->lock, flags);
 231
 232         /* Allocate and init all Tx and Command queues */
 233         ret = iwl_txq_ctx_reset(priv);
 234         if (ret)
 235                 return ret;
 236
 237         set_bit(STATUS_INIT, &priv->status);
 238
 239         return 0;
 240 }
 241 EXPORT_SYMBOL(iwl_hw_nic_init);
 242
 243 /*
 244  * QoS  support
 245 */
 246 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 247 {
 248         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 249                 return;
 250
 251         priv->qos_data.def_qos_parm.qos_flags = 0;
 252
 253         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 254             !priv->qos_data.qos_cap.q_AP.txop_request)
 255                 priv->qos_data.def_qos_parm.qos_flags |=
 256                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 257         if (priv->qos_data.qos_active)
 258                 priv->qos_data.def_qos_parm.qos_flags |=
 259                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 260
 261         if (priv->current_ht_config.is_ht)
 262                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 263
 264         if (force || iwl_is_associated(priv)) {
 265                 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 266                                 priv->qos_data.qos_active,
 267                                 priv->qos_data.def_qos_parm.qos_flags);
 268
 269                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 270                                        sizeof(struct iwl_qosparam_cmd),
 271                                        &priv->qos_data.def_qos_parm, NULL);
 272         }
 273 }
 274 EXPORT_SYMBOL(iwl_activate_qos);
 275
 276 void iwl_reset_qos(struct iwl_priv *priv)
 277 {
 278         u16 cw_min = 15;
 279         u16 cw_max = 1023;
 280         u8 aifs = 2;
 281         bool is_legacy = false;
 282         unsigned long flags;
 283         int i;
 284
 285         spin_lock_irqsave(&priv->lock, flags);
 286         /* QoS always active in AP and ADHOC mode
 287          * In STA mode wait for association
 288          */
 289         if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
 290             priv->iw_mode == NL80211_IFTYPE_AP)
 291                 priv->qos_data.qos_active = 1;
 292         else
 293                 priv->qos_data.qos_active = 0;
 294
 295         /* check for legacy mode */
 296         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
 297             (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
 298             (priv->iw_mode == NL80211_IFTYPE_STATION &&
 299             (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
 300                 cw_min = 31;
 301                 is_legacy = 1;
 302         }
 303
 304         if (priv->qos_data.qos_active)
 305                 aifs = 3;
 306
 307         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
 308         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
 309         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
 310         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
 311         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
 312
 313         if (priv->qos_data.qos_active) {
 314                 i = 1;
 315                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
 316                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
 317                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
 318                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
 319                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 320
 321                 i = 2;
 322                 priv->qos_data.def_qos_parm.ac[i].cw_min =
 323                         cpu_to_le16((cw_min + 1) / 2 - 1);
 324                 priv->qos_data.def_qos_parm.ac[i].cw_max =
 325                         cpu_to_le16(cw_max);
 326                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
 327                 if (is_legacy)
 328                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 329                                 cpu_to_le16(6016);
 330                 else
 331                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 332                                 cpu_to_le16(3008);
 333                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 334
 335                 i = 3;
 336                 priv->qos_data.def_qos_parm.ac[i].cw_min =
 337                         cpu_to_le16((cw_min + 1) / 4 - 1);
 338                 priv->qos_data.def_qos_parm.ac[i].cw_max =
 339                         cpu_to_le16((cw_max + 1) / 2 - 1);
 340                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
 341                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 342                 if (is_legacy)
 343                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 344                                 cpu_to_le16(3264);
 345                 else
 346                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 347                                 cpu_to_le16(1504);
 348         } else {
 349                 for (i = 1; i < 4; i++) {
 350                         priv->qos_data.def_qos_parm.ac[i].cw_min =
 351                                 cpu_to_le16(cw_min);
 352                         priv->qos_data.def_qos_parm.ac[i].cw_max =
 353                                 cpu_to_le16(cw_max);
 354                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
 355                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
 356                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 357                 }
 358         }
 359         IWL_DEBUG_QOS(priv, "set QoS to default \n");
 360
 361         spin_unlock_irqrestore(&priv->lock, flags);
 362 }
 363 EXPORT_SYMBOL(iwl_reset_qos);
 364
 365 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
 366 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
 367 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
 368                               struct ieee80211_sta_ht_cap *ht_info,
 369                               enum ieee80211_band band)
 370 {
 371         u16 max_bit_rate = 0;
 372         u8 rx_chains_num = priv->hw_params.rx_chains_num;
 373         u8 tx_chains_num = priv->hw_params.tx_chains_num;
 374
 375         ht_info->cap = 0;
 376         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
 377
 378         ht_info->ht_supported = true;
 379
 380         ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
 381         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
 382         ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
 383                              (WLAN_HT_CAP_SM_PS_DISABLED << 2));
 384
 385         max_bit_rate = MAX_BIT_RATE_20_MHZ;
 386         if (priv->hw_params.fat_channel & BIT(band)) {
 387                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 388                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
 389                 ht_info->mcs.rx_mask[4] = 0x01;
 390                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
 391         }
 392
 393         if (priv->cfg->mod_params->amsdu_size_8K)
 394                 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
 395
 396         ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
 397         ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
 398
 399         ht_info->mcs.rx_mask[0] = 0xFF;
 400         if (rx_chains_num >= 2)
 401                 ht_info->mcs.rx_mask[1] = 0xFF;
 402         if (rx_chains_num >= 3)
 403                 ht_info->mcs.rx_mask[2] = 0xFF;
 404
 405         /* Highest supported Rx data rate */
 406         max_bit_rate *= rx_chains_num;
 407         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
 408         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
 409
 410         /* Tx MCS capabilities */
 411         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 412         if (tx_chains_num != rx_chains_num) {
 413                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
 414                 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
 415                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
 416         }
 417 }
 418
 419 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
 420                               struct ieee80211_rate *rates)
 421 {
 422         int i;
 423
 424         for (i = 0; i < IWL_RATE_COUNT; i++) {
 425                 rates[i].bitrate = iwl_rates[i].ieee * 5;
 426                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
 427                 rates[i].hw_value_short = i;
 428                 rates[i].flags = 0;
 429                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
 430                         /*
 431                          * If CCK != 1M then set short preamble rate flag.
 432                          */
 433                         rates[i].flags |=
 434                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
 435                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
 436                 }
 437         }
 438 }
 439
 440
 441 /**
 442  * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
 443  */
 444 int iwlcore_init_geos(struct iwl_priv *priv)
 445 {
 446         struct iwl_channel_info *ch;
 447         struct ieee80211_supported_band *sband;
 448         struct ieee80211_channel *channels;
 449         struct ieee80211_channel *geo_ch;
 450         struct ieee80211_rate *rates;
 451         int i = 0;
 452
 453         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
 454             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
 455                 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
 456                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
 457                 return 0;
 458         }
 459
 460         channels = kzalloc(sizeof(struct ieee80211_channel) *
 461                            priv->channel_count, GFP_KERNEL);
 462         if (!channels)
 463                 return -ENOMEM;
 464
 465         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
 466                         GFP_KERNEL);
 467         if (!rates) {
 468                 kfree(channels);
 469                 return -ENOMEM;
 470         }
 471
 472         /* 5.2GHz channels start after the 2.4GHz channels */
 473         sband = &priv->bands[IEEE80211_BAND_5GHZ];
 474         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
 475         /* just OFDM */
 476         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
 477         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
 478
 479         if (priv->cfg->sku & IWL_SKU_N)
 480                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
 481                                          IEEE80211_BAND_5GHZ);
 482
 483         sband = &priv->bands[IEEE80211_BAND_2GHZ];
 484         sband->channels = channels;
 485         /* OFDM & CCK */
 486         sband->bitrates = rates;
 487         sband->n_bitrates = IWL_RATE_COUNT;
 488
 489         if (priv->cfg->sku & IWL_SKU_N)
 490                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
 491                                          IEEE80211_BAND_2GHZ);
 492
 493         priv->ieee_channels = channels;
 494         priv->ieee_rates = rates;
 495
 496         for (i = 0;  i < priv->channel_count; i++) {
 497                 ch = &priv->channel_info[i];
 498
 499                 /* FIXME: might be removed if scan is OK */
 500                 if (!is_channel_valid(ch))
 501                         continue;
 502
 503                 if (is_channel_a_band(ch))
 504                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
 505                 else
 506                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
 507
 508                 geo_ch = &sband->channels[sband->n_channels++];
 509
 510                 geo_ch->center_freq =
 511                                 ieee80211_channel_to_frequency(ch->channel);
 512                 geo_ch->max_power = ch->max_power_avg;
 513                 geo_ch->max_antenna_gain = 0xff;
 514                 geo_ch->hw_value = ch->channel;
 515
 516                 if (is_channel_valid(ch)) {
 517                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
 518                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
 519
 520                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
 521                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
 522
 523                         if (ch->flags & EEPROM_CHANNEL_RADAR)
 524                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
 525
 526                         geo_ch->flags |= ch->fat_extension_channel;
 527
 528                         if (ch->max_power_avg > priv->tx_power_channel_lmt)
 529                                 priv->tx_power_channel_lmt = ch->max_power_avg;
 530                 } else {
 531                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
 532                 }
 533
 534                 /* Save flags for reg domain usage */
 535                 geo_ch->orig_flags = geo_ch->flags;
 536
 537                 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
 538                                 ch->channel, geo_ch->center_freq,
 539                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
 540                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
 541                                 "restricted" : "valid",
 542                                  geo_ch->flags);
 543         }
 544
 545         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
 546              priv->cfg->sku & IWL_SKU_A) {
 547                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
 548                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
 549                            priv->pci_dev->device,
 550                            priv->pci_dev->subsystem_device);
 551                 priv->cfg->sku &= ~IWL_SKU_A;
 552         }
 553
 554         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
 555                    priv->bands[IEEE80211_BAND_2GHZ].n_channels,
 556                    priv->bands[IEEE80211_BAND_5GHZ].n_channels);
 557
 558         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
 559
 560         return 0;
 561 }
 562 EXPORT_SYMBOL(iwlcore_init_geos);
 563
 564 /*
 565  * iwlcore_free_geos - undo allocations in iwlcore_init_geos
 566  */
 567 void iwlcore_free_geos(struct iwl_priv *priv)
 568 {
 569         kfree(priv->ieee_channels);
 570         kfree(priv->ieee_rates);
 571         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
 572 }
 573 EXPORT_SYMBOL(iwlcore_free_geos);
 574
 575 static bool is_single_rx_stream(struct iwl_priv *priv)
 576 {
 577         return !priv->current_ht_config.is_ht ||
 578                ((priv->current_ht_config.mcs.rx_mask[1] == 0) &&
 579                 (priv->current_ht_config.mcs.rx_mask[2] == 0));
 580 }
 581
 582 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
 583                                    enum ieee80211_band band,
 584                                    u16 channel, u8 extension_chan_offset)
 585 {
 586         const struct iwl_channel_info *ch_info;
 587
 588         ch_info = iwl_get_channel_info(priv, band, channel);
 589         if (!is_channel_valid(ch_info))
 590                 return 0;
 591
 592         if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
 593                 return !(ch_info->fat_extension_channel &
 594                                         IEEE80211_CHAN_NO_FAT_ABOVE);
 595         else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
 596                 return !(ch_info->fat_extension_channel &
 597                                         IEEE80211_CHAN_NO_FAT_BELOW);
 598
 599         return 0;
 600 }
 601
 602 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
 603                          struct ieee80211_sta_ht_cap *sta_ht_inf)
 604 {
 605         struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;
 606
 607         if ((!iwl_ht_conf->is_ht) ||
 608            (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ) ||
 609            (iwl_ht_conf->extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE))
 610                 return 0;
 611
 612         if (sta_ht_inf) {
 613                 if ((!sta_ht_inf->ht_supported) ||
 614                    (!(sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)))
 615                         return 0;
 616         }
 617
 618         return iwl_is_channel_extension(priv, priv->band,
 619                                         le16_to_cpu(priv->staging_rxon.channel),
 620                                         iwl_ht_conf->extension_chan_offset);
 621 }
 622 EXPORT_SYMBOL(iwl_is_fat_tx_allowed);
 623
 624 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 625 {
 626         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 627
 628         if (hw_decrypt)
 629                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 630         else
 631                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 632
 633 }
 634 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
 635
 636 /**
 637  * iwl_check_rxon_cmd - validate RXON structure is valid
 638  *
 639  * NOTE:  This is really only useful during development and can eventually
 640  * be #ifdef'd out once the driver is stable and folks aren't actively
 641  * making changes
 642  */
 643 int iwl_check_rxon_cmd(struct iwl_priv *priv)
 644 {
 645         int error = 0;
 646         int counter = 1;
 647         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 648
 649         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 650                 error |= le32_to_cpu(rxon->flags &
 651                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 652                                  RXON_FLG_RADAR_DETECT_MSK));
 653                 if (error)
 654                         IWL_WARN(priv, "check 24G fields %d | %d\n",
 655                                     counter++, error);
 656         } else {
 657                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 658                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 659                 if (error)
 660                         IWL_WARN(priv, "check 52 fields %d | %d\n",
 661                                     counter++, error);
 662                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 663                 if (error)
 664                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
 665                                     counter++, error);
 666         }
 667         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 668         if (error)
 669                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
 670
 671         /* make sure basic rates 6Mbps and 1Mbps are supported */
 672         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 673                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 674         if (error)
 675                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
 676
 677         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 678         if (error)
 679                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
 680
 681         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 682                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 683         if (error)
 684                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
 685                             counter++, error);
 686
 687         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 688                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 689         if (error)
 690                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
 691                             counter++, error);
 692
 693         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 694                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 695         if (error)
 696                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
 697                             counter++, error);
 698
 699         if (error)
 700                 IWL_WARN(priv, "Tuning to channel %d\n",
 701                             le16_to_cpu(rxon->channel));
 702
 703         if (error) {
 704                 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
 705                 return -1;
 706         }
 707         return 0;
 708 }
 709 EXPORT_SYMBOL(iwl_check_rxon_cmd);
 710
 711 /**
 712  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 713  * @priv: staging_rxon is compared to active_rxon
 714  *
 715  * If the RXON structure is changing enough to require a new tune,
 716  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 717  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 718  */
 719 int iwl_full_rxon_required(struct iwl_priv *priv)
 720 {
 721
 722         /* These items are only settable from the full RXON command */
 723         if (!(iwl_is_associated(priv)) ||
 724             compare_ether_addr(priv->staging_rxon.bssid_addr,
 725                                priv->active_rxon.bssid_addr) ||
 726             compare_ether_addr(priv->staging_rxon.node_addr,
 727                                priv->active_rxon.node_addr) ||
 728             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 729                                priv->active_rxon.wlap_bssid_addr) ||
 730             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 731             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 732             (priv->staging_rxon.air_propagation !=
 733              priv->active_rxon.air_propagation) ||
 734             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 735              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 736             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 737              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 738             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 739                 return 1;
 740
 741         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 742          * be updated with the RXON_ASSOC command -- however only some
 743          * flag transitions are allowed using RXON_ASSOC */
 744
 745         /* Check if we are not switching bands */
 746         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 747             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 748                 return 1;
 749
 750         /* Check if we are switching association toggle */
 751         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 752                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 753                 return 1;
 754
 755         return 0;
 756 }
 757 EXPORT_SYMBOL(iwl_full_rxon_required);
 758
 759 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 760 {
 761         int i;
 762         int rate_mask;
 763
 764         /* Set rate mask*/
 765         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 766                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 767         else
 768                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 769
 770         /* Find lowest valid rate */
 771         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 772                                         i = iwl_rates[i].next_ieee) {
 773                 if (rate_mask & (1 << i))
 774                         return iwl_rates[i].plcp;
 775         }
 776
 777         /* No valid rate was found. Assign the lowest one */
 778         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 779                 return IWL_RATE_1M_PLCP;
 780         else
 781                 return IWL_RATE_6M_PLCP;
 782 }
 783 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
 784
 785 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
 786 {
 787         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 788         u32 val;
 789
 790         if (!ht_info->is_ht) {
 791                 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 792                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK |
 793                         RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
 794                         RXON_FLG_FAT_PROT_MSK |
 795                         RXON_FLG_HT_PROT_MSK);
 796                 return;
 797         }
 798
 799         /* Set up channel bandwidth:  20 MHz only, or 20/40 mixed if fat ok */
 800         if (iwl_is_fat_tx_allowed(priv, NULL))
 801                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK;
 802         else
 803                 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 804                                  RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 805
 806         /* Note: control channel is opposite of extension channel */
 807         switch (ht_info->extension_chan_offset) {
 808         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 809                 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
 810                 break;
 811         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 812                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 813                 break;
 814         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
 815         default:
 816                 rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK;
 817                 break;
 818         }
 819
 820         val = ht_info->ht_protection;
 821
 822         rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS);
 823
 824         iwl_set_rxon_chain(priv);
 825
 826         IWL_DEBUG_ASSOC(priv, "supported HT rate 0x%X 0x%X 0x%X "
 827                         "rxon flags 0x%X operation mode :0x%X "
 828                         "extension channel offset 0x%x\n",
 829                         ht_info->mcs.rx_mask[0],
 830                         ht_info->mcs.rx_mask[1],
 831                         ht_info->mcs.rx_mask[2],
 832                         le32_to_cpu(rxon->flags), ht_info->ht_protection,
 833                         ht_info->extension_chan_offset);
 834         return;
 835 }
 836 EXPORT_SYMBOL(iwl_set_rxon_ht);
 837
 838 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 839 #define IWL_NUM_RX_CHAINS_SINGLE        2
 840 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 841 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 842
 843 /* Determine how many receiver/antenna chains to use.
 844  * More provides better reception via diversity.  Fewer saves power.
 845  * MIMO (dual stream) requires at least 2, but works better with 3.
 846  * This does not determine *which* chains to use, just how many.
 847  */
 848 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 849 {
 850         bool is_single = is_single_rx_stream(priv);
 851         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 852
 853         /* # of Rx chains to use when expecting MIMO. */
 854         if (is_single || (!is_cam && (priv->current_ht_config.sm_ps ==
 855                                                  WLAN_HT_CAP_SM_PS_STATIC)))
 856                 return IWL_NUM_RX_CHAINS_SINGLE;
 857         else
 858                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 859 }
 860
 861 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 862 {
 863         int idle_cnt;
 864         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 865         /* # Rx chains when idling and maybe trying to save power */
 866         switch (priv->current_ht_config.sm_ps) {
 867         case WLAN_HT_CAP_SM_PS_STATIC:
 868         case WLAN_HT_CAP_SM_PS_DYNAMIC:
 869                 idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
 870                                         IWL_NUM_IDLE_CHAINS_SINGLE;
 871                 break;
 872         case WLAN_HT_CAP_SM_PS_DISABLED:
 873                 idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
 874                 break;
 875         case WLAN_HT_CAP_SM_PS_INVALID:
 876         default:
 877                 IWL_ERR(priv, "invalid mimo ps mode %d\n",
 878                            priv->current_ht_config.sm_ps);
 879                 WARN_ON(1);
 880                 idle_cnt = -1;
 881                 break;
 882         }
 883         return idle_cnt;
 884 }
 885
 886 /* up to 4 chains */
 887 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
 888 {
 889         u8 res;
 890         res = (chain_bitmap & BIT(0)) >> 0;
 891         res += (chain_bitmap & BIT(1)) >> 1;
 892         res += (chain_bitmap & BIT(2)) >> 2;
 893         res += (chain_bitmap & BIT(4)) >> 4;
 894         return res;
 895 }
 896
 897 /**
 898  * iwl_is_monitor_mode - Determine if interface in monitor mode
 899  *
 900  * priv->iw_mode is set in add_interface, but add_interface is
 901  * never called for monitor mode. The only way mac80211 informs us about
 902  * monitor mode is through configuring filters (call to configure_filter).
 903  */
 904 static bool iwl_is_monitor_mode(struct iwl_priv *priv)
 905 {
 906         return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
 907 }
 908
 909 /**
 910  * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
 911  *
 912  * Selects how many and which Rx receivers/antennas/chains to use.
 913  * This should not be used for scan command ... it puts data in wrong place.
 914  */
 915 void iwl_set_rxon_chain(struct iwl_priv *priv)
 916 {
 917         bool is_single = is_single_rx_stream(priv);
 918         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 919         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
 920         u32 active_chains;
 921         u16 rx_chain;
 922
 923         /* Tell uCode which antennas are actually connected.
 924          * Before first association, we assume all antennas are connected.
 925          * Just after first association, iwl_chain_noise_calibration()
 926          *    checks which antennas actually *are* connected. */
 927          if (priv->chain_noise_data.active_chains)
 928                 active_chains = priv->chain_noise_data.active_chains;
 929         else
 930                 active_chains = priv->hw_params.valid_rx_ant;
 931
 932         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
 933
 934         /* How many receivers should we use? */
 935         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
 936         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
 937
 938
 939         /* correct rx chain count according hw settings
 940          * and chain noise calibration
 941          */
 942         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
 943         if (valid_rx_cnt < active_rx_cnt)
 944                 active_rx_cnt = valid_rx_cnt;
 945
 946         if (valid_rx_cnt < idle_rx_cnt)
 947                 idle_rx_cnt = valid_rx_cnt;
 948
 949         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
 950         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
 951
 952         /* copied from 'iwl_bg_request_scan()' */
 953         /* Force use of chains B and C (0x6) for Rx for 4965
 954          * Avoid A (0x1) because of its off-channel reception on A-band.
 955          * MIMO is not used here, but value is required */
 956         if (iwl_is_monitor_mode(priv) &&
 957             !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
 958             ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
 959                 rx_chain = 0x07 << RXON_RX_CHAIN_VALID_POS;
 960                 rx_chain |= 0x06 << RXON_RX_CHAIN_FORCE_SEL_POS;
 961                 rx_chain |= 0x07 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
 962                 rx_chain |= 0x01 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
 963         }
 964
 965         priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
 966
 967         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
 968                 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
 969         else
 970                 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
 971
 972         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
 973                         priv->staging_rxon.rx_chain,
 974                         active_rx_cnt, idle_rx_cnt);
 975
 976         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
 977                 active_rx_cnt < idle_rx_cnt);
 978 }
 979 EXPORT_SYMBOL(iwl_set_rxon_chain);
 980
 981 /**
 982  * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
 983  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
 984  * @channel: Any channel valid for the requested phymode
 985
 986  * In addition to setting the staging RXON, priv->phymode is also set.
 987  *
 988  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
 989  * in the staging RXON flag structure based on the phymode
 990  */
 991 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
 992 {
 993         enum ieee80211_band band = ch->band;
 994         u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
 995
 996         if (!iwl_get_channel_info(priv, band, channel)) {
 997                 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
 998                                channel, band);
 999                 return -EINVAL;
1000         }
1001
1002         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1003             (priv->band == band))
1004                 return 0;
1005
1006         priv->staging_rxon.channel = cpu_to_le16(channel);
1007         if (band == IEEE80211_BAND_5GHZ)
1008                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1009         else
1010                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1011
1012         priv->band = band;
1013
1014         IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1015
1016         return 0;
1017 }
1018 EXPORT_SYMBOL(iwl_set_rxon_channel);
1019
1020 void iwl_set_flags_for_band(struct iwl_priv *priv,
1021                             enum ieee80211_band band)
1022 {
1023         if (band == IEEE80211_BAND_5GHZ) {
1024                 priv->staging_rxon.flags &=
1025                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1026                       | RXON_FLG_CCK_MSK);
1027                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1028         } else {
1029                 /* Copied from iwl_post_associate() */
1030                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1031                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1032                 else
1033                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1034
1035                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1036                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1037
1038                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1039                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1040                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1041         }
1042 }
1043 EXPORT_SYMBOL(iwl_set_flags_for_band);
1044
1045 /*
1046  * initialize rxon structure with default values from eeprom
1047  */
1048 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1049 {
1050         const struct iwl_channel_info *ch_info;
1051
1052         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1053
1054         switch (mode) {
1055         case NL80211_IFTYPE_AP:
1056                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1057                 break;
1058
1059         case NL80211_IFTYPE_STATION:
1060                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1061                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1062                 break;
1063
1064         case NL80211_IFTYPE_ADHOC:
1065                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1066                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1067                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1068                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1069                 break;
1070
1071         case NL80211_IFTYPE_MONITOR:
1072                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1073                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1074                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1075                 break;
1076         default:
1077                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1078                 break;
1079         }
1080
1081 #if 0
1082         /* TODO:  Figure out when short_preamble would be set and cache from
1083          * that */
1084         if (!hw_to_local(priv->hw)->short_preamble)
1085                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1086         else
1087                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1088 #endif
1089
1090         ch_info = iwl_get_channel_info(priv, priv->band,
1091                                        le16_to_cpu(priv->active_rxon.channel));
1092
1093         if (!ch_info)
1094                 ch_info = &priv->channel_info[0];
1095
1096         /*
1097          * in some case A channels are all non IBSS
1098          * in this case force B/G channel
1099          */
1100         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1101             !(is_channel_ibss(ch_info)))
1102                 ch_info = &priv->channel_info[0];
1103
1104         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1105         priv->band = ch_info->band;
1106
1107         iwl_set_flags_for_band(priv, priv->band);
1108
1109         priv->staging_rxon.ofdm_basic_rates =
1110             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1111         priv->staging_rxon.cck_basic_rates =
1112             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1113
1114         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1115                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1116         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1117         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1118         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1119         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1120 }
1121 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1122
1123 void iwl_set_rate(struct iwl_priv *priv)
1124 {
1125         const struct ieee80211_supported_band *hw = NULL;
1126         struct ieee80211_rate *rate;
1127         int i;
1128
1129         hw = iwl_get_hw_mode(priv, priv->band);
1130         if (!hw) {
1131                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1132                 return;
1133         }
1134
1135         priv->active_rate = 0;
1136         priv->active_rate_basic = 0;
1137
1138         for (i = 0; i < hw->n_bitrates; i++) {
1139                 rate = &(hw->bitrates[i]);
1140                 if (rate->hw_value < IWL_RATE_COUNT)
1141                         priv->active_rate |= (1 << rate->hw_value);
1142         }
1143
1144         IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1145                        priv->active_rate, priv->active_rate_basic);
1146
1147         /*
1148          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1149          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1150          * OFDM
1151          */
1152         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1153                 priv->staging_rxon.cck_basic_rates =
1154                     ((priv->active_rate_basic &
1155                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1156         else
1157                 priv->staging_rxon.cck_basic_rates =
1158                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1159
1160         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1161                 priv->staging_rxon.ofdm_basic_rates =
1162                     ((priv->active_rate_basic &
1163                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1164                       IWL_FIRST_OFDM_RATE) & 0xFF;
1165         else
1166                 priv->staging_rxon.ofdm_basic_rates =
1167                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1168 }
1169 EXPORT_SYMBOL(iwl_set_rate);
1170
1171 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1172 {
1173         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1174         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1175         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1176         IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1177                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1178         rxon->channel = csa->channel;
1179         priv->staging_rxon.channel = csa->channel;
1180 }
1181 EXPORT_SYMBOL(iwl_rx_csa);
1182
1183 #ifdef CONFIG_IWLWIFI_DEBUG
1184 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1185 {
1186         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1187
1188         IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1189         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1190         IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1191         IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1192         IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1193                         le32_to_cpu(rxon->filter_flags));
1194         IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1195         IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1196                         rxon->ofdm_basic_rates);
1197         IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1198         IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1199         IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1200         IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1201 }
1202 #endif
1203
1204 /**
1205  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1206  */
1207 void iwl_irq_handle_error(struct iwl_priv *priv)
1208 {
1209         /* Set the FW error flag -- cleared on iwl_down */
1210         set_bit(STATUS_FW_ERROR, &priv->status);
1211
1212         /* Cancel currently queued command. */
1213         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1214
1215 #ifdef CONFIG_IWLWIFI_DEBUG
1216         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1217                 iwl_dump_nic_error_log(priv);
1218                 iwl_dump_nic_event_log(priv);
1219                 iwl_print_rx_config_cmd(priv);
1220         }
1221 #endif
1222
1223         wake_up_interruptible(&priv->wait_command_queue);
1224
1225         /* Keep the restart process from trying to send host
1226          * commands by clearing the INIT status bit */
1227         clear_bit(STATUS_READY, &priv->status);
1228
1229         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1230                 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1231                           "Restarting adapter due to uCode error.\n");
1232
1233                 if (iwl_is_associated(priv)) {
1234                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1235                                sizeof(priv->recovery_rxon));
1236                         priv->error_recovering = 1;
1237                 }
1238                 if (priv->cfg->mod_params->restart_fw)
1239                         queue_work(priv->workqueue, &priv->restart);
1240         }
1241 }
1242 EXPORT_SYMBOL(iwl_irq_handle_error);
1243
1244 void iwl_configure_filter(struct ieee80211_hw *hw,
1245                           unsigned int changed_flags,
1246                           unsigned int *total_flags,
1247                           int mc_count, struct dev_addr_list *mc_list)
1248 {
1249         struct iwl_priv *priv = hw->priv;
1250         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1251
1252         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1253                         changed_flags, *total_flags);
1254
1255         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1256                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1257                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
1258                 else
1259                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1260         }
1261         if (changed_flags & FIF_ALLMULTI) {
1262                 if (*total_flags & FIF_ALLMULTI)
1263                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1264                 else
1265                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1266         }
1267         if (changed_flags & FIF_CONTROL) {
1268                 if (*total_flags & FIF_CONTROL)
1269                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1270                 else
1271                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1272         }
1273         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1274                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1275                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1276                 else
1277                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1278         }
1279
1280         /* We avoid iwl_commit_rxon here to commit the new filter flags
1281          * since mac80211 will call ieee80211_hw_config immediately.
1282          * (mc_list is not supported at this time). Otherwise, we need to
1283          * queue a background iwl_commit_rxon work.
1284          */
1285
1286         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1287                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1288 }
1289 EXPORT_SYMBOL(iwl_configure_filter);
1290
1291 int iwl_setup_mac(struct iwl_priv *priv)
1292 {
1293         int ret;
1294         struct ieee80211_hw *hw = priv->hw;
1295         hw->rate_control_algorithm = "iwl-agn-rs";
1296
1297         /* Tell mac80211 our characteristics */
1298         hw->flags = IEEE80211_HW_SIGNAL_DBM |
1299                     IEEE80211_HW_NOISE_DBM |
1300                     IEEE80211_HW_AMPDU_AGGREGATION |
1301                     IEEE80211_HW_SPECTRUM_MGMT |
1302                     IEEE80211_HW_SUPPORTS_PS;
1303         hw->wiphy->interface_modes =
1304                 BIT(NL80211_IFTYPE_STATION) |
1305                 BIT(NL80211_IFTYPE_ADHOC);
1306
1307         hw->wiphy->custom_regulatory = true;
1308         hw->wiphy->max_scan_ssids = 1;
1309         hw->wiphy->max_scan_ie_len = 0; /* XXX for now */
1310
1311         /* Default value; 4 EDCA QOS priorities */
1312         hw->queues = 4;
1313
1314         hw->conf.beacon_int = 100;
1315         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1316
1317         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1318                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1319                         &priv->bands[IEEE80211_BAND_2GHZ];
1320         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1321                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1322                         &priv->bands[IEEE80211_BAND_5GHZ];
1323
1324         ret = ieee80211_register_hw(priv->hw);
1325         if (ret) {
1326                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1327                 return ret;
1328         }
1329         priv->mac80211_registered = 1;
1330
1331         return 0;
1332 }
1333 EXPORT_SYMBOL(iwl_setup_mac);
1334
1335 int iwl_set_hw_params(struct iwl_priv *priv)
1336 {
1337         priv->hw_params.sw_crypto = priv->cfg->mod_params->sw_crypto;
1338         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1339         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1340         if (priv->cfg->mod_params->amsdu_size_8K)
1341                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1342         else
1343                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1344         priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1345
1346         if (priv->cfg->mod_params->disable_11n)
1347                 priv->cfg->sku &= ~IWL_SKU_N;
1348
1349         /* Device-specific setup */
1350         return priv->cfg->ops->lib->set_hw_params(priv);
1351 }
1352 EXPORT_SYMBOL(iwl_set_hw_params);
1353
1354 int iwl_init_drv(struct iwl_priv *priv)
1355 {
1356         int ret;
1357
1358         priv->ibss_beacon = NULL;
1359
1360         spin_lock_init(&priv->lock);
1361         spin_lock_init(&priv->power_data.lock);
1362         spin_lock_init(&priv->sta_lock);
1363         spin_lock_init(&priv->hcmd_lock);
1364
1365         INIT_LIST_HEAD(&priv->free_frames);
1366
1367         mutex_init(&priv->mutex);
1368
1369         /* Clear the driver's (not device's) station table */
1370         iwl_clear_stations_table(priv);
1371
1372         priv->data_retry_limit = -1;
1373         priv->ieee_channels = NULL;
1374         priv->ieee_rates = NULL;
1375         priv->band = IEEE80211_BAND_2GHZ;
1376
1377         priv->iw_mode = NL80211_IFTYPE_STATION;
1378
1379         priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
1380
1381         /* Choose which receivers/antennas to use */
1382         iwl_set_rxon_chain(priv);
1383         iwl_init_scan_params(priv);
1384
1385         iwl_reset_qos(priv);
1386
1387         priv->qos_data.qos_active = 0;
1388         priv->qos_data.qos_cap.val = 0;
1389
1390         priv->rates_mask = IWL_RATES_MASK;
1391         /* If power management is turned on, default to CAM mode */
1392         priv->power_mode = IWL_POWER_MODE_CAM;
1393         priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
1394
1395         ret = iwl_init_channel_map(priv);
1396         if (ret) {
1397                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1398                 goto err;
1399         }
1400
1401         ret = iwlcore_init_geos(priv);
1402         if (ret) {
1403                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1404                 goto err_free_channel_map;
1405         }
1406         iwlcore_init_hw_rates(priv, priv->ieee_rates);
1407
1408         return 0;
1409
1410 err_free_channel_map:
1411         iwl_free_channel_map(priv);
1412 err:
1413         return ret;
1414 }
1415 EXPORT_SYMBOL(iwl_init_drv);
1416
1417 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1418 {
1419         int ret = 0;
1420         if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1421                 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1422                          tx_power,
1423                          IWL_TX_POWER_TARGET_POWER_MIN);
1424                 return -EINVAL;
1425         }
1426
1427         if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
1428                 IWL_WARN(priv, "Requested user TXPOWER %d above upper limit %d.\n",
1429                          tx_power,
1430                          IWL_TX_POWER_TARGET_POWER_MAX);
1431                 return -EINVAL;
1432         }
1433
1434         if (priv->tx_power_user_lmt != tx_power)
1435                 force = true;
1436
1437         priv->tx_power_user_lmt = tx_power;
1438
1439         /* if nic is not up don't send command */
1440         if (!iwl_is_ready_rf(priv))
1441                 return ret;
1442
1443         if (force && priv->cfg->ops->lib->send_tx_power)
1444                 ret = priv->cfg->ops->lib->send_tx_power(priv);
1445
1446         return ret;
1447 }
1448 EXPORT_SYMBOL(iwl_set_tx_power);
1449
1450 void iwl_uninit_drv(struct iwl_priv *priv)
1451 {
1452         iwl_calib_free_results(priv);
1453         iwlcore_free_geos(priv);
1454         iwl_free_channel_map(priv);
1455         kfree(priv->scan);
1456 }
1457 EXPORT_SYMBOL(iwl_uninit_drv);
1458
1459
1460 void iwl_disable_interrupts(struct iwl_priv *priv)
1461 {
1462         clear_bit(STATUS_INT_ENABLED, &priv->status);
1463
1464         /* disable interrupts from uCode/NIC to host */
1465         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1466
1467         /* acknowledge/clear/reset any interrupts still pending
1468          * from uCode or flow handler (Rx/Tx DMA) */
1469         iwl_write32(priv, CSR_INT, 0xffffffff);
1470         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1471         IWL_DEBUG_ISR(priv, "Disabled interrupts\n");
1472 }
1473 EXPORT_SYMBOL(iwl_disable_interrupts);
1474
1475 void iwl_enable_interrupts(struct iwl_priv *priv)
1476 {
1477         IWL_DEBUG_ISR(priv, "Enabling interrupts\n");
1478         set_bit(STATUS_INT_ENABLED, &priv->status);
1479         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1480 }
1481 EXPORT_SYMBOL(iwl_enable_interrupts);
1482
1483 irqreturn_t iwl_isr(int irq, void *data)
1484 {
1485         struct iwl_priv *priv = data;
1486         u32 inta, inta_mask;
1487         u32 inta_fh;
1488         if (!priv)
1489                 return IRQ_NONE;
1490
1491         spin_lock(&priv->lock);
1492
1493         /* Disable (but don't clear!) interrupts here to avoid
1494          *    back-to-back ISRs and sporadic interrupts from our NIC.
1495          * If we have something to service, the tasklet will re-enable ints.
1496          * If we *don't* have something, we'll re-enable before leaving here. */
1497         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1498         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1499
1500         /* Discover which interrupts are active/pending */
1501         inta = iwl_read32(priv, CSR_INT);
1502         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1503
1504         /* Ignore interrupt if there's nothing in NIC to service.
1505          * This may be due to IRQ shared with another device,
1506          * or due to sporadic interrupts thrown from our NIC. */
1507         if (!inta && !inta_fh) {
1508                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1509                 goto none;
1510         }
1511
1512         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1513                 /* Hardware disappeared. It might have already raised
1514                  * an interrupt */
1515                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1516                 goto unplugged;
1517         }
1518
1519         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1520                       inta, inta_mask, inta_fh);
1521
1522         inta &= ~CSR_INT_BIT_SCD;
1523
1524         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1525         if (likely(inta || inta_fh))
1526                 tasklet_schedule(&priv->irq_tasklet);
1527
1528  unplugged:
1529         spin_unlock(&priv->lock);
1530         return IRQ_HANDLED;
1531
1532  none:
1533         /* re-enable interrupts here since we don't have anything to service. */
1534         /* only Re-enable if diabled by irq */
1535         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1536                 iwl_enable_interrupts(priv);
1537         spin_unlock(&priv->lock);
1538         return IRQ_NONE;
1539 }
1540 EXPORT_SYMBOL(iwl_isr);
1541
1542 int iwl_send_bt_config(struct iwl_priv *priv)
1543 {
1544         struct iwl_bt_cmd bt_cmd = {
1545                 .flags = 3,
1546                 .lead_time = 0xAA,
1547                 .max_kill = 1,
1548                 .kill_ack_mask = 0,
1549                 .kill_cts_mask = 0,
1550         };
1551
1552         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1553                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
1554 }
1555 EXPORT_SYMBOL(iwl_send_bt_config);
1556
1557 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
1558 {
1559         u32 stat_flags = 0;
1560         struct iwl_host_cmd cmd = {
1561                 .id = REPLY_STATISTICS_CMD,
1562                 .meta.flags = flags,
1563                 .len = sizeof(stat_flags),
1564                 .data = (u8 *) &stat_flags,
1565         };
1566         return iwl_send_cmd(priv, &cmd);
1567 }
1568 EXPORT_SYMBOL(iwl_send_statistics_request);
1569
1570 /**
1571  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
1572  *   using sample data 100 bytes apart.  If these sample points are good,
1573  *   it's a pretty good bet that everything between them is good, too.
1574  */
1575 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1576 {
1577         u32 val;
1578         int ret = 0;
1579         u32 errcnt = 0;
1580         u32 i;
1581
1582         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1583
1584         ret = iwl_grab_nic_access(priv);
1585         if (ret)
1586                 return ret;
1587
1588         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1589                 /* read data comes through single port, auto-incr addr */
1590                 /* NOTE: Use the debugless read so we don't flood kernel log
1591                  * if IWL_DL_IO is set */
1592                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1593                         i + IWL49_RTC_INST_LOWER_BOUND);
1594                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1595                 if (val != le32_to_cpu(*image)) {
1596                         ret = -EIO;
1597                         errcnt++;
1598                         if (errcnt >= 3)
1599                                 break;
1600                 }
1601         }
1602
1603         iwl_release_nic_access(priv);
1604
1605         return ret;
1606 }
1607
1608 /**
1609  * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1610  *     looking at all data.
1611  */
1612 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1613                                  u32 len)
1614 {
1615         u32 val;
1616         u32 save_len = len;
1617         int ret = 0;
1618         u32 errcnt;
1619
1620         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1621
1622         ret = iwl_grab_nic_access(priv);
1623         if (ret)
1624                 return ret;
1625
1626         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1627                            IWL49_RTC_INST_LOWER_BOUND);
1628
1629         errcnt = 0;
1630         for (; len > 0; len -= sizeof(u32), image++) {
1631                 /* read data comes through single port, auto-incr addr */
1632                 /* NOTE: Use the debugless read so we don't flood kernel log
1633                  * if IWL_DL_IO is set */
1634                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1635                 if (val != le32_to_cpu(*image)) {
1636                         IWL_ERR(priv, "uCode INST section is invalid at "
1637                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
1638                                   save_len - len, val, le32_to_cpu(*image));
1639                         ret = -EIO;
1640                         errcnt++;
1641                         if (errcnt >= 20)
1642                                 break;
1643                 }
1644         }
1645
1646         iwl_release_nic_access(priv);
1647
1648         if (!errcnt)
1649                 IWL_DEBUG_INFO(priv,
1650                     "ucode image in INSTRUCTION memory is good\n");
1651
1652         return ret;
1653 }
1654
1655 /**
1656  * iwl_verify_ucode - determine which instruction image is in SRAM,
1657  *    and verify its contents
1658  */
1659 int iwl_verify_ucode(struct iwl_priv *priv)
1660 {
1661         __le32 *image;
1662         u32 len;
1663         int ret;
1664
1665         /* Try bootstrap */
1666         image = (__le32 *)priv->ucode_boot.v_addr;
1667         len = priv->ucode_boot.len;
1668         ret = iwlcore_verify_inst_sparse(priv, image, len);
1669         if (!ret) {
1670                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
1671                 return 0;
1672         }
1673
1674         /* Try initialize */
1675         image = (__le32 *)priv->ucode_init.v_addr;
1676         len = priv->ucode_init.len;
1677         ret = iwlcore_verify_inst_sparse(priv, image, len);
1678         if (!ret) {
1679                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
1680                 return 0;
1681         }
1682
1683         /* Try runtime/protocol */
1684         image = (__le32 *)priv->ucode_code.v_addr;
1685         len = priv->ucode_code.len;
1686         ret = iwlcore_verify_inst_sparse(priv, image, len);
1687         if (!ret) {
1688                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
1689                 return 0;
1690         }
1691
1692         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1693
1694         /* Since nothing seems to match, show first several data entries in
1695          * instruction SRAM, so maybe visual inspection will give a clue.
1696          * Selection of bootstrap image (vs. other images) is arbitrary. */
1697         image = (__le32 *)priv->ucode_boot.v_addr;
1698         len = priv->ucode_boot.len;
1699         ret = iwl_verify_inst_full(priv, image, len);
1700
1701         return ret;
1702 }
1703 EXPORT_SYMBOL(iwl_verify_ucode);
1704
1705
1706 static const char *desc_lookup_text[] = {
1707         "OK",
1708         "FAIL",
1709         "BAD_PARAM",
1710         "BAD_CHECKSUM",
1711         "NMI_INTERRUPT_WDG",
1712         "SYSASSERT",
1713         "FATAL_ERROR",
1714         "BAD_COMMAND",
1715         "HW_ERROR_TUNE_LOCK",
1716         "HW_ERROR_TEMPERATURE",
1717         "ILLEGAL_CHAN_FREQ",
1718         "VCC_NOT_STABLE",
1719         "FH_ERROR",
1720         "NMI_INTERRUPT_HOST",
1721         "NMI_INTERRUPT_ACTION_PT",
1722         "NMI_INTERRUPT_UNKNOWN",
1723         "UCODE_VERSION_MISMATCH",
1724         "HW_ERROR_ABS_LOCK",
1725         "HW_ERROR_CAL_LOCK_FAIL",
1726         "NMI_INTERRUPT_INST_ACTION_PT",
1727         "NMI_INTERRUPT_DATA_ACTION_PT",
1728         "NMI_TRM_HW_ER",
1729         "NMI_INTERRUPT_TRM",
1730         "NMI_INTERRUPT_BREAK_POINT"
1731         "DEBUG_0",
1732         "DEBUG_1",
1733         "DEBUG_2",
1734         "DEBUG_3",
1735         "UNKNOWN"
1736 };
1737
1738 static const char *desc_lookup(int i)
1739 {
1740         int max = ARRAY_SIZE(desc_lookup_text) - 1;
1741
1742         if (i < 0 || i > max)
1743                 i = max;
1744
1745         return desc_lookup_text[i];
1746 }
1747
1748 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1749 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1750
1751 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1752 {
1753         u32 data2, line;
1754         u32 desc, time, count, base, data1;
1755         u32 blink1, blink2, ilink1, ilink2;
1756         int ret;
1757
1758         if (priv->ucode_type == UCODE_INIT)
1759                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1760         else
1761                 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1762
1763         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1764                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1765                 return;
1766         }
1767
1768         ret = iwl_grab_nic_access(priv);
1769         if (ret) {
1770                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1771                 return;
1772         }
1773
1774         count = iwl_read_targ_mem(priv, base);
1775
1776         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1777                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1778                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1779                         priv->status, count);
1780         }
1781
1782         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1783         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1784         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1785         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1786         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1787         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1788         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1789         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1790         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1791
1792         IWL_ERR(priv, "Desc                               Time       "
1793                 "data1      data2      line\n");
1794         IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1795                 desc_lookup(desc), desc, time, data1, data2, line);
1796         IWL_ERR(priv, "blink1  blink2  ilink1  ilink2\n");
1797         IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1798                 ilink1, ilink2);
1799
1800         iwl_release_nic_access(priv);
1801 }
1802 EXPORT_SYMBOL(iwl_dump_nic_error_log);
1803
1804 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1805
1806 /**
1807  * iwl_print_event_log - Dump error event log to syslog
1808  *
1809  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
1810  */
1811 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1812                                 u32 num_events, u32 mode)
1813 {
1814         u32 i;
1815         u32 base;       /* SRAM byte address of event log header */
1816         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1817         u32 ptr;        /* SRAM byte address of log data */
1818         u32 ev, time, data; /* event log data */
1819
1820         if (num_events == 0)
1821                 return;
1822         if (priv->ucode_type == UCODE_INIT)
1823                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1824         else
1825                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1826
1827         if (mode == 0)
1828                 event_size = 2 * sizeof(u32);
1829         else
1830                 event_size = 3 * sizeof(u32);
1831
1832         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1833
1834         /* "time" is actually "data" for mode 0 (no timestamp).
1835         * place event id # at far right for easier visual parsing. */
1836         for (i = 0; i < num_events; i++) {
1837                 ev = iwl_read_targ_mem(priv, ptr);
1838                 ptr += sizeof(u32);
1839                 time = iwl_read_targ_mem(priv, ptr);
1840                 ptr += sizeof(u32);
1841                 if (mode == 0) {
1842                         /* data, ev */
1843                         IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1844                 } else {
1845                         data = iwl_read_targ_mem(priv, ptr);
1846                         ptr += sizeof(u32);
1847                         IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1848                                         time, data, ev);
1849                 }
1850         }
1851 }
1852
1853 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1854 {
1855         int ret;
1856         u32 base;       /* SRAM byte address of event log header */
1857         u32 capacity;   /* event log capacity in # entries */
1858         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1859         u32 num_wraps;  /* # times uCode wrapped to top of log */
1860         u32 next_entry; /* index of next entry to be written by uCode */
1861         u32 size;       /* # entries that we'll print */
1862
1863         if (priv->ucode_type == UCODE_INIT)
1864                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1865         else
1866                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1867
1868         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1869                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1870                 return;
1871         }
1872
1873         ret = iwl_grab_nic_access(priv);
1874         if (ret) {
1875                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1876                 return;
1877         }
1878
1879         /* event log header */
1880         capacity = iwl_read_targ_mem(priv, base);
1881         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1882         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1883         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1884
1885         size = num_wraps ? capacity : next_entry;
1886
1887         /* bail out if nothing in log */
1888         if (size == 0) {
1889                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1890                 iwl_release_nic_access(priv);
1891                 return;
1892         }
1893
1894         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1895                         size, num_wraps);
1896
1897         /* if uCode has wrapped back to top of log, start at the oldest entry,
1898          * i.e the next one that uCode would fill. */
1899         if (num_wraps)
1900                 iwl_print_event_log(priv, next_entry,
1901                                         capacity - next_entry, mode);
1902         /* (then/else) start at top of log */
1903         iwl_print_event_log(priv, 0, next_entry, mode);
1904
1905         iwl_release_nic_access(priv);
1906 }
1907 EXPORT_SYMBOL(iwl_dump_nic_event_log);
1908
1909 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1910 {
1911         struct iwl_ct_kill_config cmd;
1912         unsigned long flags;
1913         int ret = 0;
1914
1915         spin_lock_irqsave(&priv->lock, flags);
1916         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1917                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1918         spin_unlock_irqrestore(&priv->lock, flags);
1919
1920         cmd.critical_temperature_R =
1921                 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1922
1923         ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1924                                sizeof(cmd), &cmd);
1925         if (ret)
1926                 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1927         else
1928                 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD succeeded, "
1929                         "critical temperature is %d\n",
1930                         cmd.critical_temperature_R);
1931 }
1932 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
1933
1934
1935 /*
1936  * CARD_STATE_CMD
1937  *
1938  * Use: Sets the device's internal card state to enable, disable, or halt
1939  *
1940  * When in the 'enable' state the card operates as normal.
1941  * When in the 'disable' state, the card enters into a low power mode.
1942  * When in the 'halt' state, the card is shut down and must be fully
1943  * restarted to come back on.
1944  */
1945 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1946 {
1947         struct iwl_host_cmd cmd = {
1948                 .id = REPLY_CARD_STATE_CMD,
1949                 .len = sizeof(u32),
1950                 .data = &flags,
1951                 .meta.flags = meta_flag,
1952         };
1953
1954         return iwl_send_cmd(priv, &cmd);
1955 }
1956 EXPORT_SYMBOL(iwl_send_card_state);
1957
1958 void iwl_radio_kill_sw_disable_radio(struct iwl_priv *priv)
1959 {
1960         unsigned long flags;
1961
1962         if (test_bit(STATUS_RF_KILL_SW, &priv->status))
1963                 return;
1964
1965         IWL_DEBUG_RF_KILL(priv, "Manual SW RF KILL set to: RADIO OFF\n");
1966
1967         iwl_scan_cancel(priv);
1968         /* FIXME: This is a workaround for AP */
1969         if (priv->iw_mode != NL80211_IFTYPE_AP) {
1970                 spin_lock_irqsave(&priv->lock, flags);
1971                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1972                             CSR_UCODE_SW_BIT_RFKILL);
1973                 spin_unlock_irqrestore(&priv->lock, flags);
1974                 /* call the host command only if no hw rf-kill set */
1975                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1976                     iwl_is_ready(priv))
1977                         iwl_send_card_state(priv,
1978                                 CARD_STATE_CMD_DISABLE, 0);
1979                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1980                         /* make sure mac80211 stop sending Tx frame */
1981                 if (priv->mac80211_registered)
1982                         ieee80211_stop_queues(priv->hw);
1983         }
1984 }
1985 EXPORT_SYMBOL(iwl_radio_kill_sw_disable_radio);
1986
1987 int iwl_radio_kill_sw_enable_radio(struct iwl_priv *priv)
1988 {
1989         unsigned long flags;
1990
1991         if (!test_bit(STATUS_RF_KILL_SW, &priv->status))
1992                 return 0;
1993
1994         IWL_DEBUG_RF_KILL(priv, "Manual SW RF KILL set to: RADIO ON\n");
1995
1996         spin_lock_irqsave(&priv->lock, flags);
1997         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1998
1999         /* If the driver is up it will receive CARD_STATE_NOTIFICATION
2000          * notification where it will clear SW rfkill status.
2001          * Setting it here would break the handler. Only if the
2002          * interface is down we can set here since we don't
2003          * receive any further notification.
2004          */
2005         if (!priv->is_open)
2006                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2007         spin_unlock_irqrestore(&priv->lock, flags);
2008
2009         /* wake up ucode */
2010         msleep(10);
2011
2012         spin_lock_irqsave(&priv->lock, flags);
2013         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2014         if (!iwl_grab_nic_access(priv))
2015                 iwl_release_nic_access(priv);
2016         spin_unlock_irqrestore(&priv->lock, flags);
2017
2018         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2019                 IWL_DEBUG_RF_KILL(priv, "Can not turn radio back on - "
2020                                   "disabled by HW switch\n");
2021                 return 0;
2022         }
2023
2024         /* when driver is up while rfkill is on, it wont receive
2025          * any CARD_STATE_NOTIFICATION notifications so we have to
2026          * restart it in here
2027          */
2028         if (priv->is_open && !test_bit(STATUS_ALIVE, &priv->status)) {
2029                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2030                 if (!iwl_is_rfkill(priv))
2031                         queue_work(priv->workqueue, &priv->up);
2032         }
2033
2034         /* If the driver is already loaded, it will receive
2035          * CARD_STATE_NOTIFICATION notifications and the handler will
2036          * call restart to reload the driver.
2037          */
2038         return 1;
2039 }
2040 EXPORT_SYMBOL(iwl_radio_kill_sw_enable_radio);
2041
2042 void iwl_bg_rf_kill(struct work_struct *work)
2043 {
2044         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2045
2046         wake_up_interruptible(&priv->wait_command_queue);
2047
2048         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2049                 return;
2050
2051         mutex_lock(&priv->mutex);
2052
2053         if (!iwl_is_rfkill(priv)) {
2054                 IWL_DEBUG_RF_KILL(priv,
2055                           "HW and/or SW RF Kill no longer active, restarting "
2056                           "device\n");
2057                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status) &&
2058                     priv->is_open)
2059                         queue_work(priv->workqueue, &priv->restart);
2060         } else {
2061                 /* make sure mac80211 stop sending Tx frame */
2062                 if (priv->mac80211_registered)
2063                         ieee80211_stop_queues(priv->hw);
2064
2065                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2066                         IWL_DEBUG_RF_KILL(priv, "Can not turn radio back on - "
2067                                           "disabled by SW switch\n");
2068                 else
2069                         IWL_WARN(priv, "Radio Frequency Kill Switch is On:\n"
2070                                     "Kill switch must be turned off for "
2071                                     "wireless networking to work.\n");
2072         }
2073         mutex_unlock(&priv->mutex);
2074         iwl_rfkill_set_hw_state(priv);
2075 }
2076 EXPORT_SYMBOL(iwl_bg_rf_kill);
2077
2078 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2079                            struct iwl_rx_mem_buffer *rxb)
2080 {
2081 #ifdef CONFIG_IWLWIFI_DEBUG
2082         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2083         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2084         IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2085                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2086 #endif
2087 }
2088 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2089
2090 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2091                                       struct iwl_rx_mem_buffer *rxb)
2092 {
2093         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2094         IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2095                         "notification for %s:\n",
2096                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2097         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2098 }
2099 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2100
2101 void iwl_rx_reply_error(struct iwl_priv *priv,
2102                         struct iwl_rx_mem_buffer *rxb)
2103 {
2104         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2105
2106         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2107                 "seq 0x%04X ser 0x%08X\n",
2108                 le32_to_cpu(pkt->u.err_resp.error_type),
2109                 get_cmd_string(pkt->u.err_resp.cmd_id),
2110                 pkt->u.err_resp.cmd_id,
2111                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2112                 le32_to_cpu(pkt->u.err_resp.error_info));
2113 }
2114 EXPORT_SYMBOL(iwl_rx_reply_error);
2115
2116 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2117                            const struct ieee80211_tx_queue_params *params)
2118 {
2119         struct iwl_priv *priv = hw->priv;
2120         unsigned long flags;
2121         int q;
2122
2123         IWL_DEBUG_MAC80211(priv, "enter\n");
2124
2125         if (!iwl_is_ready_rf(priv)) {
2126                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2127                 return -EIO;
2128         }
2129
2130         if (queue >= AC_NUM) {
2131                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2132                 return 0;
2133         }
2134
2135         q = AC_NUM - 1 - queue;
2136
2137         spin_lock_irqsave(&priv->lock, flags);
2138
2139         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2140         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2141         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2142         priv->qos_data.def_qos_parm.ac[q].edca_txop =
2143                         cpu_to_le16((params->txop * 32));
2144
2145         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2146         priv->qos_data.qos_active = 1;
2147
2148         if (priv->iw_mode == NL80211_IFTYPE_AP)
2149                 iwl_activate_qos(priv, 1);
2150         else if (priv->assoc_id && iwl_is_associated(priv))
2151                 iwl_activate_qos(priv, 0);
2152
2153         spin_unlock_irqrestore(&priv->lock, flags);
2154
2155         IWL_DEBUG_MAC80211(priv, "leave\n");
2156         return 0;
2157 }
2158 EXPORT_SYMBOL(iwl_mac_conf_tx);
2159 #ifdef CONFIG_PM
2160
2161 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
2162 {
2163         struct iwl_priv *priv = pci_get_drvdata(pdev);
2164
2165         /*
2166          * This function is called when system goes into suspend state
2167          * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
2168          * first but since iwl_mac_stop() has no knowledge of who the caller is,
2169          * it will not call apm_ops.stop() to stop the DMA operation.
2170          * Calling apm_ops.stop here to make sure we stop the DMA.
2171          */
2172         priv->cfg->ops->lib->apm_ops.stop(priv);
2173
2174         pci_save_state(pdev);
2175         pci_disable_device(pdev);
2176         pci_set_power_state(pdev, PCI_D3hot);
2177
2178         return 0;
2179 }
2180 EXPORT_SYMBOL(iwl_pci_suspend);
2181
2182 int iwl_pci_resume(struct pci_dev *pdev)
2183 {
2184         struct iwl_priv *priv = pci_get_drvdata(pdev);
2185         int ret;
2186
2187         pci_set_power_state(pdev, PCI_D0);
2188         ret = pci_enable_device(pdev);
2189         if (ret)
2190                 return ret;
2191         pci_restore_state(pdev);
2192         iwl_enable_interrupts(priv);
2193
2194         return 0;
2195 }
2196 EXPORT_SYMBOL(iwl_pci_resume);
2197
2198 #endif /* CONFIG_PM */