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 static struct iwl_wimax_coex_event_entry cu_priorities[COEX_NUM_OF_EVENTS] = {
  50         {COEX_CU_UNASSOC_IDLE_RP, COEX_CU_UNASSOC_IDLE_WP,
  51          0, COEX_UNASSOC_IDLE_FLAGS},
  52         {COEX_CU_UNASSOC_MANUAL_SCAN_RP, COEX_CU_UNASSOC_MANUAL_SCAN_WP,
  53          0, COEX_UNASSOC_MANUAL_SCAN_FLAGS},
  54         {COEX_CU_UNASSOC_AUTO_SCAN_RP, COEX_CU_UNASSOC_AUTO_SCAN_WP,
  55          0, COEX_UNASSOC_AUTO_SCAN_FLAGS},
  56         {COEX_CU_CALIBRATION_RP, COEX_CU_CALIBRATION_WP,
  57          0, COEX_CALIBRATION_FLAGS},
  58         {COEX_CU_PERIODIC_CALIBRATION_RP, COEX_CU_PERIODIC_CALIBRATION_WP,
  59          0, COEX_PERIODIC_CALIBRATION_FLAGS},
  60         {COEX_CU_CONNECTION_ESTAB_RP, COEX_CU_CONNECTION_ESTAB_WP,
  61          0, COEX_CONNECTION_ESTAB_FLAGS},
  62         {COEX_CU_ASSOCIATED_IDLE_RP, COEX_CU_ASSOCIATED_IDLE_WP,
  63          0, COEX_ASSOCIATED_IDLE_FLAGS},
  64         {COEX_CU_ASSOC_MANUAL_SCAN_RP, COEX_CU_ASSOC_MANUAL_SCAN_WP,
  65          0, COEX_ASSOC_MANUAL_SCAN_FLAGS},
  66         {COEX_CU_ASSOC_AUTO_SCAN_RP, COEX_CU_ASSOC_AUTO_SCAN_WP,
  67          0, COEX_ASSOC_AUTO_SCAN_FLAGS},
  68         {COEX_CU_ASSOC_ACTIVE_LEVEL_RP, COEX_CU_ASSOC_ACTIVE_LEVEL_WP,
  69          0, COEX_ASSOC_ACTIVE_LEVEL_FLAGS},
  70         {COEX_CU_RF_ON_RP, COEX_CU_RF_ON_WP, 0, COEX_CU_RF_ON_FLAGS},
  71         {COEX_CU_RF_OFF_RP, COEX_CU_RF_OFF_WP, 0, COEX_RF_OFF_FLAGS},
  72         {COEX_CU_STAND_ALONE_DEBUG_RP, COEX_CU_STAND_ALONE_DEBUG_WP,
  73          0, COEX_STAND_ALONE_DEBUG_FLAGS},
  74         {COEX_CU_IPAN_ASSOC_LEVEL_RP, COEX_CU_IPAN_ASSOC_LEVEL_WP,
  75          0, COEX_IPAN_ASSOC_LEVEL_FLAGS},
  76         {COEX_CU_RSRVD1_RP, COEX_CU_RSRVD1_WP, 0, COEX_RSRVD1_FLAGS},
  77         {COEX_CU_RSRVD2_RP, COEX_CU_RSRVD2_WP, 0, COEX_RSRVD2_FLAGS}
  78 };
  79
  80 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np)    \
  81         [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,      \
  82                                     IWL_RATE_SISO_##s##M_PLCP, \
  83                                     IWL_RATE_MIMO2_##s##M_PLCP,\
  84                                     IWL_RATE_MIMO3_##s##M_PLCP,\
  85                                     IWL_RATE_##r##M_IEEE,      \
  86                                     IWL_RATE_##ip##M_INDEX,    \
  87                                     IWL_RATE_##in##M_INDEX,    \
  88                                     IWL_RATE_##rp##M_INDEX,    \
  89                                     IWL_RATE_##rn##M_INDEX,    \
  90                                     IWL_RATE_##pp##M_INDEX,    \
  91                                     IWL_RATE_##np##M_INDEX }
  92
  93 u32 iwl_debug_level;
  94 EXPORT_SYMBOL(iwl_debug_level);
  95
  96 static irqreturn_t iwl_isr(int irq, void *data);
  97
  98 /*
  99  * Parameter order:
 100  *   rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
 101  *
 102  * If there isn't a valid next or previous rate then INV is used which
 103  * maps to IWL_RATE_INVALID
 104  *
 105  */
 106 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
 107         IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2),    /*  1mbps */
 108         IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5),          /*  2mbps */
 109         IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
 110         IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18),      /* 11mbps */
 111         IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
 112         IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11),       /*  9mbps */
 113         IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
 114         IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
 115         IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
 116         IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
 117         IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
 118         IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
 119         IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
 120         /* FIXME:RS:          ^^    should be INV (legacy) */
 121 };
 122 EXPORT_SYMBOL(iwl_rates);
 123
 124 /**
 125  * translate ucode response to mac80211 tx status control values
 126  */
 127 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
 128                                   struct ieee80211_tx_info *info)
 129 {
 130         struct ieee80211_tx_rate *r = &info->control.rates[0];
 131
 132         info->antenna_sel_tx =
 133                 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
 134         if (rate_n_flags & RATE_MCS_HT_MSK)
 135                 r->flags |= IEEE80211_TX_RC_MCS;
 136         if (rate_n_flags & RATE_MCS_GF_MSK)
 137                 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
 138         if (rate_n_flags & RATE_MCS_HT40_MSK)
 139                 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
 140         if (rate_n_flags & RATE_MCS_DUP_MSK)
 141                 r->flags |= IEEE80211_TX_RC_DUP_DATA;
 142         if (rate_n_flags & RATE_MCS_SGI_MSK)
 143                 r->flags |= IEEE80211_TX_RC_SHORT_GI;
 144         r->idx = iwl_hwrate_to_mac80211_idx(rate_n_flags, info->band);
 145 }
 146 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
 147
 148 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
 149 {
 150         int idx = 0;
 151
 152         /* HT rate format */
 153         if (rate_n_flags & RATE_MCS_HT_MSK) {
 154                 idx = (rate_n_flags & 0xff);
 155
 156                 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
 157                         idx = idx - IWL_RATE_MIMO3_6M_PLCP;
 158                 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
 159                         idx = idx - IWL_RATE_MIMO2_6M_PLCP;
 160
 161                 idx += IWL_FIRST_OFDM_RATE;
 162                 /* skip 9M not supported in ht*/
 163                 if (idx >= IWL_RATE_9M_INDEX)
 164                         idx += 1;
 165                 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
 166                         return idx;
 167
 168         /* legacy rate format, search for match in table */
 169         } else {
 170                 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
 171                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 172                                 return idx;
 173         }
 174
 175         return -1;
 176 }
 177 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
 178
 179 int iwl_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
 180 {
 181         int idx = 0;
 182         int band_offset = 0;
 183
 184         /* HT rate format: mac80211 wants an MCS number, which is just LSB */
 185         if (rate_n_flags & RATE_MCS_HT_MSK) {
 186                 idx = (rate_n_flags & 0xff);
 187                 return idx;
 188         /* Legacy rate format, search for match in table */
 189         } else {
 190                 if (band == IEEE80211_BAND_5GHZ)
 191                         band_offset = IWL_FIRST_OFDM_RATE;
 192                 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
 193                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 194                                 return idx - band_offset;
 195         }
 196
 197         return -1;
 198 }
 199
 200 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
 201 {
 202         int i;
 203         u8 ind = ant;
 204         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 205                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 206                 if (priv->hw_params.valid_tx_ant & BIT(ind))
 207                         return ind;
 208         }
 209         return ant;
 210 }
 211 EXPORT_SYMBOL(iwl_toggle_tx_ant);
 212
 213 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 214 EXPORT_SYMBOL(iwl_bcast_addr);
 215
 216
 217 /* This function both allocates and initializes hw and priv. */
 218 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
 219                 struct ieee80211_ops *hw_ops)
 220 {
 221         struct iwl_priv *priv;
 222
 223         /* mac80211 allocates memory for this device instance, including
 224          *   space for this driver's private structure */
 225         struct ieee80211_hw *hw =
 226                 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
 227         if (hw == NULL) {
 228                 printk(KERN_ERR "%s: Can not allocate network device\n",
 229                        cfg->name);
 230                 goto out;
 231         }
 232
 233         priv = hw->priv;
 234         priv->hw = hw;
 235
 236 out:
 237         return hw;
 238 }
 239 EXPORT_SYMBOL(iwl_alloc_all);
 240
 241 void iwl_hw_detect(struct iwl_priv *priv)
 242 {
 243         priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
 244         priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
 245         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
 246 }
 247 EXPORT_SYMBOL(iwl_hw_detect);
 248
 249 int iwl_hw_nic_init(struct iwl_priv *priv)
 250 {
 251         unsigned long flags;
 252         struct iwl_rx_queue *rxq = &priv->rxq;
 253         int ret;
 254
 255         /* nic_init */
 256         spin_lock_irqsave(&priv->lock, flags);
 257         priv->cfg->ops->lib->apm_ops.init(priv);
 258         iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
 259         spin_unlock_irqrestore(&priv->lock, flags);
 260
 261         ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
 262
 263         priv->cfg->ops->lib->apm_ops.config(priv);
 264
 265         /* Allocate the RX queue, or reset if it is already allocated */
 266         if (!rxq->bd) {
 267                 ret = iwl_rx_queue_alloc(priv);
 268                 if (ret) {
 269                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
 270                         return -ENOMEM;
 271                 }
 272         } else
 273                 iwl_rx_queue_reset(priv, rxq);
 274
 275         iwl_rx_replenish(priv);
 276
 277         iwl_rx_init(priv, rxq);
 278
 279         spin_lock_irqsave(&priv->lock, flags);
 280
 281         rxq->need_update = 1;
 282         iwl_rx_queue_update_write_ptr(priv, rxq);
 283
 284         spin_unlock_irqrestore(&priv->lock, flags);
 285
 286         /* Allocate and init all Tx and Command queues */
 287         ret = iwl_txq_ctx_reset(priv);
 288         if (ret)
 289                 return ret;
 290
 291         set_bit(STATUS_INIT, &priv->status);
 292
 293         return 0;
 294 }
 295 EXPORT_SYMBOL(iwl_hw_nic_init);
 296
 297 /*
 298  * QoS  support
 299 */
 300 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 301 {
 302         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 303                 return;
 304
 305         priv->qos_data.def_qos_parm.qos_flags = 0;
 306
 307         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 308             !priv->qos_data.qos_cap.q_AP.txop_request)
 309                 priv->qos_data.def_qos_parm.qos_flags |=
 310                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 311         if (priv->qos_data.qos_active)
 312                 priv->qos_data.def_qos_parm.qos_flags |=
 313                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 314
 315         if (priv->current_ht_config.is_ht)
 316                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 317
 318         if (force || iwl_is_associated(priv)) {
 319                 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 320                                 priv->qos_data.qos_active,
 321                                 priv->qos_data.def_qos_parm.qos_flags);
 322
 323                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 324                                        sizeof(struct iwl_qosparam_cmd),
 325                                        &priv->qos_data.def_qos_parm, NULL);
 326         }
 327 }
 328 EXPORT_SYMBOL(iwl_activate_qos);
 329
 330 /*
 331  * AC        CWmin         CW max      AIFSN      TXOP Limit    TXOP Limit
 332  *                                              (802.11b)      (802.11a/g)
 333  * AC_BK      15            1023        7           0               0
 334  * AC_BE      15            1023        3           0               0
 335  * AC_VI       7              15        2          6.016ms       3.008ms
 336  * AC_VO       3               7        2          3.264ms       1.504ms
 337  */
 338 void iwl_reset_qos(struct iwl_priv *priv)
 339 {
 340         u16 cw_min = 15;
 341         u16 cw_max = 1023;
 342         u8 aifs = 2;
 343         bool is_legacy = false;
 344         unsigned long flags;
 345         int i;
 346
 347         spin_lock_irqsave(&priv->lock, flags);
 348         /* QoS always active in AP and ADHOC mode
 349          * In STA mode wait for association
 350          */
 351         if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
 352             priv->iw_mode == NL80211_IFTYPE_AP)
 353                 priv->qos_data.qos_active = 1;
 354         else
 355                 priv->qos_data.qos_active = 0;
 356
 357         /* check for legacy mode */
 358         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
 359             (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
 360             (priv->iw_mode == NL80211_IFTYPE_STATION &&
 361             (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
 362                 cw_min = 31;
 363                 is_legacy = 1;
 364         }
 365
 366         if (priv->qos_data.qos_active)
 367                 aifs = 3;
 368
 369         /* AC_BE */
 370         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
 371         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
 372         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
 373         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
 374         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
 375
 376         if (priv->qos_data.qos_active) {
 377                 /* AC_BK */
 378                 i = 1;
 379                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
 380                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
 381                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
 382                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
 383                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 384
 385                 /* AC_VI */
 386                 i = 2;
 387                 priv->qos_data.def_qos_parm.ac[i].cw_min =
 388                         cpu_to_le16((cw_min + 1) / 2 - 1);
 389                 priv->qos_data.def_qos_parm.ac[i].cw_max =
 390                         cpu_to_le16(cw_min);
 391                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
 392                 if (is_legacy)
 393                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 394                                 cpu_to_le16(6016);
 395                 else
 396                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 397                                 cpu_to_le16(3008);
 398                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 399
 400                 /* AC_VO */
 401                 i = 3;
 402                 priv->qos_data.def_qos_parm.ac[i].cw_min =
 403                         cpu_to_le16((cw_min + 1) / 4 - 1);
 404                 priv->qos_data.def_qos_parm.ac[i].cw_max =
 405                         cpu_to_le16((cw_min + 1) / 2 - 1);
 406                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
 407                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 408                 if (is_legacy)
 409                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 410                                 cpu_to_le16(3264);
 411                 else
 412                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 413                                 cpu_to_le16(1504);
 414         } else {
 415                 for (i = 1; i < 4; i++) {
 416                         priv->qos_data.def_qos_parm.ac[i].cw_min =
 417                                 cpu_to_le16(cw_min);
 418                         priv->qos_data.def_qos_parm.ac[i].cw_max =
 419                                 cpu_to_le16(cw_max);
 420                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
 421                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
 422                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 423                 }
 424         }
 425         IWL_DEBUG_QOS(priv, "set QoS to default \n");
 426
 427         spin_unlock_irqrestore(&priv->lock, flags);
 428 }
 429 EXPORT_SYMBOL(iwl_reset_qos);
 430
 431 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
 432 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
 433 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
 434                               struct ieee80211_sta_ht_cap *ht_info,
 435                               enum ieee80211_band band)
 436 {
 437         u16 max_bit_rate = 0;
 438         u8 rx_chains_num = priv->hw_params.rx_chains_num;
 439         u8 tx_chains_num = priv->hw_params.tx_chains_num;
 440
 441         ht_info->cap = 0;
 442         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
 443
 444         ht_info->ht_supported = true;
 445
 446         if (priv->cfg->ht_greenfield_support)
 447                 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
 448         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
 449         if (priv->cfg->support_sm_ps)
 450                 ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
 451                                      (WLAN_HT_CAP_SM_PS_DYNAMIC << 2));
 452         else
 453                 ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
 454                                      (WLAN_HT_CAP_SM_PS_DISABLED << 2));
 455
 456         max_bit_rate = MAX_BIT_RATE_20_MHZ;
 457         if (priv->hw_params.ht40_channel & BIT(band)) {
 458                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 459                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
 460                 ht_info->mcs.rx_mask[4] = 0x01;
 461                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
 462         }
 463
 464         if (priv->cfg->mod_params->amsdu_size_8K)
 465                 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
 466
 467         ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
 468         ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
 469
 470         ht_info->mcs.rx_mask[0] = 0xFF;
 471         if (rx_chains_num >= 2)
 472                 ht_info->mcs.rx_mask[1] = 0xFF;
 473         if (rx_chains_num >= 3)
 474                 ht_info->mcs.rx_mask[2] = 0xFF;
 475
 476         /* Highest supported Rx data rate */
 477         max_bit_rate *= rx_chains_num;
 478         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
 479         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
 480
 481         /* Tx MCS capabilities */
 482         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 483         if (tx_chains_num != rx_chains_num) {
 484                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
 485                 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
 486                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
 487         }
 488 }
 489
 490 /**
 491  * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
 492  */
 493 int iwlcore_init_geos(struct iwl_priv *priv)
 494 {
 495         struct iwl_channel_info *ch;
 496         struct ieee80211_supported_band *sband;
 497         struct ieee80211_channel *channels;
 498         struct ieee80211_channel *geo_ch;
 499         struct ieee80211_rate *rates;
 500         int i = 0;
 501
 502         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
 503             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
 504                 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
 505                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
 506                 return 0;
 507         }
 508
 509         channels = kzalloc(sizeof(struct ieee80211_channel) *
 510                            priv->channel_count, GFP_KERNEL);
 511         if (!channels)
 512                 return -ENOMEM;
 513
 514         rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
 515                         GFP_KERNEL);
 516         if (!rates) {
 517                 kfree(channels);
 518                 return -ENOMEM;
 519         }
 520
 521         /* 5.2GHz channels start after the 2.4GHz channels */
 522         sband = &priv->bands[IEEE80211_BAND_5GHZ];
 523         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
 524         /* just OFDM */
 525         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
 526         sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
 527
 528         if (priv->cfg->sku & IWL_SKU_N)
 529                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
 530                                          IEEE80211_BAND_5GHZ);
 531
 532         sband = &priv->bands[IEEE80211_BAND_2GHZ];
 533         sband->channels = channels;
 534         /* OFDM & CCK */
 535         sband->bitrates = rates;
 536         sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
 537
 538         if (priv->cfg->sku & IWL_SKU_N)
 539                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
 540                                          IEEE80211_BAND_2GHZ);
 541
 542         priv->ieee_channels = channels;
 543         priv->ieee_rates = rates;
 544
 545         for (i = 0;  i < priv->channel_count; i++) {
 546                 ch = &priv->channel_info[i];
 547
 548                 /* FIXME: might be removed if scan is OK */
 549                 if (!is_channel_valid(ch))
 550                         continue;
 551
 552                 if (is_channel_a_band(ch))
 553                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
 554                 else
 555                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
 556
 557                 geo_ch = &sband->channels[sband->n_channels++];
 558
 559                 geo_ch->center_freq =
 560                                 ieee80211_channel_to_frequency(ch->channel);
 561                 geo_ch->max_power = ch->max_power_avg;
 562                 geo_ch->max_antenna_gain = 0xff;
 563                 geo_ch->hw_value = ch->channel;
 564
 565                 if (is_channel_valid(ch)) {
 566                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
 567                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
 568
 569                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
 570                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
 571
 572                         if (ch->flags & EEPROM_CHANNEL_RADAR)
 573                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
 574
 575                         geo_ch->flags |= ch->ht40_extension_channel;
 576
 577                         if (ch->max_power_avg > priv->tx_power_device_lmt)
 578                                 priv->tx_power_device_lmt = ch->max_power_avg;
 579                 } else {
 580                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
 581                 }
 582
 583                 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
 584                                 ch->channel, geo_ch->center_freq,
 585                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
 586                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
 587                                 "restricted" : "valid",
 588                                  geo_ch->flags);
 589         }
 590
 591         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
 592              priv->cfg->sku & IWL_SKU_A) {
 593                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
 594                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
 595                            priv->pci_dev->device,
 596                            priv->pci_dev->subsystem_device);
 597                 priv->cfg->sku &= ~IWL_SKU_A;
 598         }
 599
 600         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
 601                    priv->bands[IEEE80211_BAND_2GHZ].n_channels,
 602                    priv->bands[IEEE80211_BAND_5GHZ].n_channels);
 603
 604         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
 605
 606         return 0;
 607 }
 608 EXPORT_SYMBOL(iwlcore_init_geos);
 609
 610 /*
 611  * iwlcore_free_geos - undo allocations in iwlcore_init_geos
 612  */
 613 void iwlcore_free_geos(struct iwl_priv *priv)
 614 {
 615         kfree(priv->ieee_channels);
 616         kfree(priv->ieee_rates);
 617         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
 618 }
 619 EXPORT_SYMBOL(iwlcore_free_geos);
 620
 621 /*
 622  *  iwlcore_rts_tx_cmd_flag: Set rts/cts. 3945 and 4965 only share this
 623  *  function.
 624  */
 625 void iwlcore_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
 626                                 __le32 *tx_flags)
 627 {
 628         if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
 629                 *tx_flags |= TX_CMD_FLG_RTS_MSK;
 630                 *tx_flags &= ~TX_CMD_FLG_CTS_MSK;
 631         } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 632                 *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
 633                 *tx_flags |= TX_CMD_FLG_CTS_MSK;
 634         }
 635 }
 636 EXPORT_SYMBOL(iwlcore_rts_tx_cmd_flag);
 637
 638 static bool is_single_rx_stream(struct iwl_priv *priv)
 639 {
 640         return !priv->current_ht_config.is_ht ||
 641                priv->current_ht_config.single_chain_sufficient;
 642 }
 643
 644 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
 645                                    enum ieee80211_band band,
 646                                    u16 channel, u8 extension_chan_offset)
 647 {
 648         const struct iwl_channel_info *ch_info;
 649
 650         ch_info = iwl_get_channel_info(priv, band, channel);
 651         if (!is_channel_valid(ch_info))
 652                 return 0;
 653
 654         if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
 655                 return !(ch_info->ht40_extension_channel &
 656                                         IEEE80211_CHAN_NO_HT40PLUS);
 657         else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
 658                 return !(ch_info->ht40_extension_channel &
 659                                         IEEE80211_CHAN_NO_HT40MINUS);
 660
 661         return 0;
 662 }
 663
 664 u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
 665                          struct ieee80211_sta_ht_cap *sta_ht_inf)
 666 {
 667         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
 668
 669         if (!ht_conf->is_ht || !ht_conf->is_40mhz)
 670                 return 0;
 671
 672         /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
 673          * the bit will not set if it is pure 40MHz case
 674          */
 675         if (sta_ht_inf) {
 676                 if (!sta_ht_inf->ht_supported)
 677                         return 0;
 678         }
 679 #ifdef CONFIG_IWLWIFI_DEBUG
 680         if (priv->disable_ht40)
 681                 return 0;
 682 #endif
 683         return iwl_is_channel_extension(priv, priv->band,
 684                         le16_to_cpu(priv->staging_rxon.channel),
 685                         ht_conf->extension_chan_offset);
 686 }
 687 EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
 688
 689 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
 690 {
 691         u16 new_val = 0;
 692         u16 beacon_factor = 0;
 693
 694         beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
 695         new_val = beacon_val / beacon_factor;
 696
 697         if (!new_val)
 698                 new_val = max_beacon_val;
 699
 700         return new_val;
 701 }
 702
 703 void iwl_setup_rxon_timing(struct iwl_priv *priv)
 704 {
 705         u64 tsf;
 706         s32 interval_tm, rem;
 707         unsigned long flags;
 708         struct ieee80211_conf *conf = NULL;
 709         u16 beacon_int;
 710
 711         conf = ieee80211_get_hw_conf(priv->hw);
 712
 713         spin_lock_irqsave(&priv->lock, flags);
 714         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 715         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 716
 717         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 718                 beacon_int = priv->beacon_int;
 719                 priv->rxon_timing.atim_window = 0;
 720         } else {
 721                 beacon_int = priv->vif->bss_conf.beacon_int;
 722
 723                 /* TODO: we need to get atim_window from upper stack
 724                  * for now we set to 0 */
 725                 priv->rxon_timing.atim_window = 0;
 726         }
 727
 728         beacon_int = iwl_adjust_beacon_interval(beacon_int,
 729                                 priv->hw_params.max_beacon_itrvl * 1024);
 730         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 731
 732         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 733         interval_tm = beacon_int * 1024;
 734         rem = do_div(tsf, interval_tm);
 735         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 736
 737         spin_unlock_irqrestore(&priv->lock, flags);
 738         IWL_DEBUG_ASSOC(priv,
 739                         "beacon interval %d beacon timer %d beacon tim %d\n",
 740                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 741                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 742                         le16_to_cpu(priv->rxon_timing.atim_window));
 743 }
 744 EXPORT_SYMBOL(iwl_setup_rxon_timing);
 745
 746 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 747 {
 748         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 749
 750         if (hw_decrypt)
 751                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 752         else
 753                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 754
 755 }
 756 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
 757
 758 /**
 759  * iwl_check_rxon_cmd - validate RXON structure is valid
 760  *
 761  * NOTE:  This is really only useful during development and can eventually
 762  * be #ifdef'd out once the driver is stable and folks aren't actively
 763  * making changes
 764  */
 765 int iwl_check_rxon_cmd(struct iwl_priv *priv)
 766 {
 767         int error = 0;
 768         int counter = 1;
 769         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 770
 771         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 772                 error |= le32_to_cpu(rxon->flags &
 773                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 774                                  RXON_FLG_RADAR_DETECT_MSK));
 775                 if (error)
 776                         IWL_WARN(priv, "check 24G fields %d | %d\n",
 777                                     counter++, error);
 778         } else {
 779                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 780                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 781                 if (error)
 782                         IWL_WARN(priv, "check 52 fields %d | %d\n",
 783                                     counter++, error);
 784                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 785                 if (error)
 786                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
 787                                     counter++, error);
 788         }
 789         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 790         if (error)
 791                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
 792
 793         /* make sure basic rates 6Mbps and 1Mbps are supported */
 794         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 795                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 796         if (error)
 797                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
 798
 799         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 800         if (error)
 801                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
 802
 803         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 804                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 805         if (error)
 806                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
 807                             counter++, error);
 808
 809         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 810                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 811         if (error)
 812                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
 813                             counter++, error);
 814
 815         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 816                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 817         if (error)
 818                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
 819                             counter++, error);
 820
 821         if (error)
 822                 IWL_WARN(priv, "Tuning to channel %d\n",
 823                             le16_to_cpu(rxon->channel));
 824
 825         if (error) {
 826                 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
 827                 return -1;
 828         }
 829         return 0;
 830 }
 831 EXPORT_SYMBOL(iwl_check_rxon_cmd);
 832
 833 /**
 834  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 835  * @priv: staging_rxon is compared to active_rxon
 836  *
 837  * If the RXON structure is changing enough to require a new tune,
 838  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 839  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 840  */
 841 int iwl_full_rxon_required(struct iwl_priv *priv)
 842 {
 843
 844         /* These items are only settable from the full RXON command */
 845         if (!(iwl_is_associated(priv)) ||
 846             compare_ether_addr(priv->staging_rxon.bssid_addr,
 847                                priv->active_rxon.bssid_addr) ||
 848             compare_ether_addr(priv->staging_rxon.node_addr,
 849                                priv->active_rxon.node_addr) ||
 850             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 851                                priv->active_rxon.wlap_bssid_addr) ||
 852             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 853             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 854             (priv->staging_rxon.air_propagation !=
 855              priv->active_rxon.air_propagation) ||
 856             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 857              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 858             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 859              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 860             (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
 861              priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
 862             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 863                 return 1;
 864
 865         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 866          * be updated with the RXON_ASSOC command -- however only some
 867          * flag transitions are allowed using RXON_ASSOC */
 868
 869         /* Check if we are not switching bands */
 870         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 871             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 872                 return 1;
 873
 874         /* Check if we are switching association toggle */
 875         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 876                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 877                 return 1;
 878
 879         return 0;
 880 }
 881 EXPORT_SYMBOL(iwl_full_rxon_required);
 882
 883 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 884 {
 885         int i;
 886         int rate_mask;
 887
 888         /* Set rate mask*/
 889         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 890                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 891         else
 892                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 893
 894         /* Find lowest valid rate */
 895         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 896                                         i = iwl_rates[i].next_ieee) {
 897                 if (rate_mask & (1 << i))
 898                         return iwl_rates[i].plcp;
 899         }
 900
 901         /* No valid rate was found. Assign the lowest one */
 902         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 903                 return IWL_RATE_1M_PLCP;
 904         else
 905                 return IWL_RATE_6M_PLCP;
 906 }
 907 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
 908
 909 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
 910 {
 911         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 912
 913         if (!ht_conf->is_ht) {
 914                 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
 915                         RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
 916                         RXON_FLG_HT40_PROT_MSK |
 917                         RXON_FLG_HT_PROT_MSK);
 918                 return;
 919         }
 920
 921         /* FIXME: if the definition of ht_protection changed, the "translation"
 922          * will be needed for rxon->flags
 923          */
 924         rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
 925
 926         /* Set up channel bandwidth:
 927          * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
 928         /* clear the HT channel mode before set the mode */
 929         rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
 930                          RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
 931         if (iwl_is_ht40_tx_allowed(priv, NULL)) {
 932                 /* pure ht40 */
 933                 if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
 934                         rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
 935                         /* Note: control channel is opposite of extension channel */
 936                         switch (ht_conf->extension_chan_offset) {
 937                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 938                                 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 939                                 break;
 940                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 941                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 942                                 break;
 943                         }
 944                 } else {
 945                         /* Note: control channel is opposite of extension channel */
 946                         switch (ht_conf->extension_chan_offset) {
 947                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 948                                 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
 949                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
 950                                 break;
 951                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 952                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 953                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
 954                                 break;
 955                         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
 956                         default:
 957                                 /* channel location only valid if in Mixed mode */
 958                                 IWL_ERR(priv, "invalid extension channel offset\n");
 959                                 break;
 960                         }
 961                 }
 962         } else {
 963                 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
 964         }
 965
 966         if (priv->cfg->ops->hcmd->set_rxon_chain)
 967                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
 968
 969         IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
 970                         "extension channel offset 0x%x\n",
 971                         le32_to_cpu(rxon->flags), ht_conf->ht_protection,
 972                         ht_conf->extension_chan_offset);
 973         return;
 974 }
 975 EXPORT_SYMBOL(iwl_set_rxon_ht);
 976
 977 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 978 #define IWL_NUM_RX_CHAINS_SINGLE        2
 979 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 980 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 981
 982 /*
 983  * Determine how many receiver/antenna chains to use.
 984  *
 985  * More provides better reception via diversity.  Fewer saves power
 986  * at the expense of throughput, but only when not in powersave to
 987  * start with.
 988  *
 989  * MIMO (dual stream) requires at least 2, but works better with 3.
 990  * This does not determine *which* chains to use, just how many.
 991  */
 992 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 993 {
 994         /* # of Rx chains to use when expecting MIMO. */
 995         if (is_single_rx_stream(priv))
 996                 return IWL_NUM_RX_CHAINS_SINGLE;
 997         else
 998                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 999 }
1000
1001 /*
1002  * When we are in power saving mode, unless device support spatial
1003  * multiplexing power save, use the active count for rx chain count.
1004  */
1005 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
1006 {
1007         int idle_cnt = active_cnt;
1008         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1009
1010         if (priv->cfg->support_sm_ps) {
1011                 /* # Rx chains when idling and maybe trying to save power */
1012                 switch (priv->current_ht_config.sm_ps) {
1013                 case WLAN_HT_CAP_SM_PS_STATIC:
1014                 case WLAN_HT_CAP_SM_PS_DYNAMIC:
1015                         idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
1016                                 IWL_NUM_IDLE_CHAINS_SINGLE;
1017                         break;
1018                 case WLAN_HT_CAP_SM_PS_DISABLED:
1019                         idle_cnt = (is_cam) ? active_cnt :
1020                                 IWL_NUM_IDLE_CHAINS_SINGLE;
1021                         break;
1022                 case WLAN_HT_CAP_SM_PS_INVALID:
1023                 default:
1024                         IWL_ERR(priv, "invalid sm_ps mode %d\n",
1025                                 priv->current_ht_config.sm_ps);
1026                         WARN_ON(1);
1027                         break;
1028                 }
1029         }
1030         return idle_cnt;
1031 }
1032
1033 /* up to 4 chains */
1034 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
1035 {
1036         u8 res;
1037         res = (chain_bitmap & BIT(0)) >> 0;
1038         res += (chain_bitmap & BIT(1)) >> 1;
1039         res += (chain_bitmap & BIT(2)) >> 2;
1040         res += (chain_bitmap & BIT(3)) >> 3;
1041         return res;
1042 }
1043
1044 /**
1045  * iwl_is_monitor_mode - Determine if interface in monitor mode
1046  *
1047  * priv->iw_mode is set in add_interface, but add_interface is
1048  * never called for monitor mode. The only way mac80211 informs us about
1049  * monitor mode is through configuring filters (call to configure_filter).
1050  */
1051 bool iwl_is_monitor_mode(struct iwl_priv *priv)
1052 {
1053         return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1054 }
1055 EXPORT_SYMBOL(iwl_is_monitor_mode);
1056
1057 /**
1058  * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1059  *
1060  * Selects how many and which Rx receivers/antennas/chains to use.
1061  * This should not be used for scan command ... it puts data in wrong place.
1062  */
1063 void iwl_set_rxon_chain(struct iwl_priv *priv)
1064 {
1065         bool is_single = is_single_rx_stream(priv);
1066         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1067         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1068         u32 active_chains;
1069         u16 rx_chain;
1070
1071         /* Tell uCode which antennas are actually connected.
1072          * Before first association, we assume all antennas are connected.
1073          * Just after first association, iwl_chain_noise_calibration()
1074          *    checks which antennas actually *are* connected. */
1075          if (priv->chain_noise_data.active_chains)
1076                 active_chains = priv->chain_noise_data.active_chains;
1077         else
1078                 active_chains = priv->hw_params.valid_rx_ant;
1079
1080         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1081
1082         /* How many receivers should we use? */
1083         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1084         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1085
1086
1087         /* correct rx chain count according hw settings
1088          * and chain noise calibration
1089          */
1090         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1091         if (valid_rx_cnt < active_rx_cnt)
1092                 active_rx_cnt = valid_rx_cnt;
1093
1094         if (valid_rx_cnt < idle_rx_cnt)
1095                 idle_rx_cnt = valid_rx_cnt;
1096
1097         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1098         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
1099
1100         /* copied from 'iwl_bg_request_scan()' */
1101         /* Force use of chains B and C (0x6) for Rx for 4965
1102          * Avoid A (0x1) because of its off-channel reception on A-band.
1103          * MIMO is not used here, but value is required */
1104         if (iwl_is_monitor_mode(priv) &&
1105             !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1106             ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1107                 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1108                 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1109                 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1110                 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1111         }
1112
1113         priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1114
1115         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1116                 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1117         else
1118                 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1119
1120         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1121                         priv->staging_rxon.rx_chain,
1122                         active_rx_cnt, idle_rx_cnt);
1123
1124         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1125                 active_rx_cnt < idle_rx_cnt);
1126 }
1127 EXPORT_SYMBOL(iwl_set_rxon_chain);
1128
1129 /**
1130  * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1131  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1132  * @channel: Any channel valid for the requested phymode
1133
1134  * In addition to setting the staging RXON, priv->phymode is also set.
1135  *
1136  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
1137  * in the staging RXON flag structure based on the phymode
1138  */
1139 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1140 {
1141         enum ieee80211_band band = ch->band;
1142         u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1143
1144         if (!iwl_get_channel_info(priv, band, channel)) {
1145                 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1146                                channel, band);
1147                 return -EINVAL;
1148         }
1149
1150         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1151             (priv->band == band))
1152                 return 0;
1153
1154         priv->staging_rxon.channel = cpu_to_le16(channel);
1155         if (band == IEEE80211_BAND_5GHZ)
1156                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1157         else
1158                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1159
1160         priv->band = band;
1161
1162         IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1163
1164         return 0;
1165 }
1166 EXPORT_SYMBOL(iwl_set_rxon_channel);
1167
1168 void iwl_set_flags_for_band(struct iwl_priv *priv,
1169                             enum ieee80211_band band)
1170 {
1171         if (band == IEEE80211_BAND_5GHZ) {
1172                 priv->staging_rxon.flags &=
1173                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1174                       | RXON_FLG_CCK_MSK);
1175                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1176         } else {
1177                 /* Copied from iwl_post_associate() */
1178                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1179                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1180                 else
1181                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1182
1183                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1184                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1185
1186                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1187                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1188                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1189         }
1190 }
1191
1192 /*
1193  * initialize rxon structure with default values from eeprom
1194  */
1195 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1196 {
1197         const struct iwl_channel_info *ch_info;
1198
1199         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1200
1201         switch (mode) {
1202         case NL80211_IFTYPE_AP:
1203                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1204                 break;
1205
1206         case NL80211_IFTYPE_STATION:
1207                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1208                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1209                 break;
1210
1211         case NL80211_IFTYPE_ADHOC:
1212                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1213                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1214                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1215                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1216                 break;
1217
1218         default:
1219                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1220                 break;
1221         }
1222
1223 #if 0
1224         /* TODO:  Figure out when short_preamble would be set and cache from
1225          * that */
1226         if (!hw_to_local(priv->hw)->short_preamble)
1227                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1228         else
1229                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1230 #endif
1231
1232         ch_info = iwl_get_channel_info(priv, priv->band,
1233                                        le16_to_cpu(priv->active_rxon.channel));
1234
1235         if (!ch_info)
1236                 ch_info = &priv->channel_info[0];
1237
1238         /*
1239          * in some case A channels are all non IBSS
1240          * in this case force B/G channel
1241          */
1242         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1243             !(is_channel_ibss(ch_info)))
1244                 ch_info = &priv->channel_info[0];
1245
1246         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1247         priv->band = ch_info->band;
1248
1249         iwl_set_flags_for_band(priv, priv->band);
1250
1251         priv->staging_rxon.ofdm_basic_rates =
1252             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1253         priv->staging_rxon.cck_basic_rates =
1254             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1255
1256         /* clear both MIX and PURE40 mode flag */
1257         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1258                                         RXON_FLG_CHANNEL_MODE_PURE_40);
1259         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1260         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1261         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1262         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1263         priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1264 }
1265 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1266
1267 static void iwl_set_rate(struct iwl_priv *priv)
1268 {
1269         const struct ieee80211_supported_band *hw = NULL;
1270         struct ieee80211_rate *rate;
1271         int i;
1272
1273         hw = iwl_get_hw_mode(priv, priv->band);
1274         if (!hw) {
1275                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1276                 return;
1277         }
1278
1279         priv->active_rate = 0;
1280         priv->active_rate_basic = 0;
1281
1282         for (i = 0; i < hw->n_bitrates; i++) {
1283                 rate = &(hw->bitrates[i]);
1284                 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
1285                         priv->active_rate |= (1 << rate->hw_value);
1286         }
1287
1288         IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1289                        priv->active_rate, priv->active_rate_basic);
1290
1291         /*
1292          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1293          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1294          * OFDM
1295          */
1296         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1297                 priv->staging_rxon.cck_basic_rates =
1298                     ((priv->active_rate_basic &
1299                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1300         else
1301                 priv->staging_rxon.cck_basic_rates =
1302                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1303
1304         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1305                 priv->staging_rxon.ofdm_basic_rates =
1306                     ((priv->active_rate_basic &
1307                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1308                       IWL_FIRST_OFDM_RATE) & 0xFF;
1309         else
1310                 priv->staging_rxon.ofdm_basic_rates =
1311                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1312 }
1313
1314 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1315 {
1316         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1317         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1318         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1319
1320         if (priv->switch_rxon.switch_in_progress) {
1321                 if (!le32_to_cpu(csa->status) &&
1322                     (csa->channel == priv->switch_rxon.channel)) {
1323                         rxon->channel = csa->channel;
1324                         priv->staging_rxon.channel = csa->channel;
1325                         IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
1326                               le16_to_cpu(csa->channel));
1327                 } else
1328                         IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
1329                               le16_to_cpu(csa->channel));
1330
1331                 priv->switch_rxon.switch_in_progress = false;
1332         }
1333 }
1334 EXPORT_SYMBOL(iwl_rx_csa);
1335
1336 #ifdef CONFIG_IWLWIFI_DEBUG
1337 void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1338 {
1339         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1340
1341         IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1342         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1343         IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1344         IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1345         IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1346                         le32_to_cpu(rxon->filter_flags));
1347         IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1348         IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1349                         rxon->ofdm_basic_rates);
1350         IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1351         IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1352         IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1353         IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1354 }
1355 EXPORT_SYMBOL(iwl_print_rx_config_cmd);
1356 #endif
1357 /**
1358  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1359  */
1360 void iwl_irq_handle_error(struct iwl_priv *priv)
1361 {
1362         /* Set the FW error flag -- cleared on iwl_down */
1363         set_bit(STATUS_FW_ERROR, &priv->status);
1364
1365         /* Cancel currently queued command. */
1366         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1367
1368 #ifdef CONFIG_IWLWIFI_DEBUG
1369         if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) {
1370                 priv->cfg->ops->lib->dump_nic_error_log(priv);
1371                 priv->cfg->ops->lib->dump_nic_event_log(priv);
1372                 iwl_print_rx_config_cmd(priv);
1373         }
1374 #endif
1375
1376         wake_up_interruptible(&priv->wait_command_queue);
1377
1378         /* Keep the restart process from trying to send host
1379          * commands by clearing the INIT status bit */
1380         clear_bit(STATUS_READY, &priv->status);
1381
1382         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1383                 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1384                           "Restarting adapter due to uCode error.\n");
1385
1386                 if (priv->cfg->mod_params->restart_fw)
1387                         queue_work(priv->workqueue, &priv->restart);
1388         }
1389 }
1390 EXPORT_SYMBOL(iwl_irq_handle_error);
1391
1392 int iwl_apm_stop_master(struct iwl_priv *priv)
1393 {
1394         int ret = 0;
1395
1396         /* stop device's busmaster DMA activity */
1397         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
1398
1399         ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
1400                         CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
1401         if (ret)
1402                 IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n");
1403
1404         IWL_DEBUG_INFO(priv, "stop master\n");
1405
1406         return ret;
1407 }
1408 EXPORT_SYMBOL(iwl_apm_stop_master);
1409
1410 void iwl_apm_stop(struct iwl_priv *priv)
1411 {
1412         IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n");
1413
1414         /* Stop device's DMA activity */
1415         iwl_apm_stop_master(priv);
1416
1417         /* Reset the entire device */
1418         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1419
1420         udelay(10);
1421
1422         /*
1423          * Clear "initialization complete" bit to move adapter from
1424          * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
1425          */
1426         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1427 }
1428 EXPORT_SYMBOL(iwl_apm_stop);
1429
1430
1431 /*
1432  * Start up NIC's basic functionality after it has been reset
1433  * (e.g. after platform boot, or shutdown via iwl_apm_stop())
1434  * NOTE:  This does not load uCode nor start the embedded processor
1435  */
1436 int iwl_apm_init(struct iwl_priv *priv)
1437 {
1438         int ret = 0;
1439         u16 lctl;
1440
1441         IWL_DEBUG_INFO(priv, "Init card's basic functions\n");
1442
1443         /*
1444          * Use "set_bit" below rather than "write", to preserve any hardware
1445          * bits already set by default after reset.
1446          */
1447
1448         /* Disable L0S exit timer (platform NMI Work/Around) */
1449         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1450                           CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
1451
1452         /*
1453          * Disable L0s without affecting L1;
1454          *  don't wait for ICH L0s (ICH bug W/A)
1455          */
1456         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1457                           CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
1458
1459         /* Set FH wait threshold to maximum (HW error during stress W/A) */
1460         iwl_set_bit(priv, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
1461
1462         /*
1463          * Enable HAP INTA (interrupt from management bus) to
1464          * wake device's PCI Express link L1a -> L0s
1465          * NOTE:  This is no-op for 3945 (non-existant bit)
1466          */
1467         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1468                                     CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
1469
1470         /*
1471          * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
1472          * Check if BIOS (or OS) enabled L1-ASPM on this device.
1473          * If so (likely), disable L0S, so device moves directly L0->L1;
1474          *    costs negligible amount of power savings.
1475          * If not (unlikely), enable L0S, so there is at least some
1476          *    power savings, even without L1.
1477          */
1478         if (priv->cfg->set_l0s) {
1479                 lctl = iwl_pcie_link_ctl(priv);
1480                 if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
1481                                         PCI_CFG_LINK_CTRL_VAL_L1_EN) {
1482                         /* L1-ASPM enabled; disable(!) L0S  */
1483                         iwl_set_bit(priv, CSR_GIO_REG,
1484                                         CSR_GIO_REG_VAL_L0S_ENABLED);
1485                         IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n");
1486                 } else {
1487                         /* L1-ASPM disabled; enable(!) L0S */
1488                         iwl_clear_bit(priv, CSR_GIO_REG,
1489                                         CSR_GIO_REG_VAL_L0S_ENABLED);
1490                         IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n");
1491                 }
1492         }
1493
1494         /* Configure analog phase-lock-loop before activating to D0A */
1495         if (priv->cfg->pll_cfg_val)
1496                 iwl_set_bit(priv, CSR_ANA_PLL_CFG, priv->cfg->pll_cfg_val);
1497
1498         /*
1499          * Set "initialization complete" bit to move adapter from
1500          * D0U* --> D0A* (powered-up active) state.
1501          */
1502         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1503
1504         /*
1505          * Wait for clock stabilization; once stabilized, access to
1506          * device-internal resources is supported, e.g. iwl_write_prph()
1507          * and accesses to uCode SRAM.
1508          */
1509         ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
1510                         CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
1511                         CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1512         if (ret < 0) {
1513                 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
1514                 goto out;
1515         }
1516
1517         /*
1518          * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
1519          * BSM (Boostrap State Machine) is only in 3945 and 4965;
1520          * later devices (i.e. 5000 and later) have non-volatile SRAM,
1521          * and don't need BSM to restore data after power-saving sleep.
1522          *
1523          * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
1524          * do not disable clocks.  This preserves any hardware bits already
1525          * set by default in "CLK_CTRL_REG" after reset.
1526          */
1527         if (priv->cfg->use_bsm)
1528                 iwl_write_prph(priv, APMG_CLK_EN_REG,
1529                         APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
1530         else
1531                 iwl_write_prph(priv, APMG_CLK_EN_REG,
1532                         APMG_CLK_VAL_DMA_CLK_RQT);
1533         udelay(20);
1534
1535         /* Disable L1-Active */
1536         iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
1537                           APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
1538
1539 out:
1540         return ret;
1541 }
1542 EXPORT_SYMBOL(iwl_apm_init);
1543
1544
1545
1546 void iwl_configure_filter(struct ieee80211_hw *hw,
1547                           unsigned int changed_flags,
1548                           unsigned int *total_flags,
1549                           u64 multicast)
1550 {
1551         struct iwl_priv *priv = hw->priv;
1552         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1553
1554         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1555                         changed_flags, *total_flags);
1556
1557         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1558                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1559                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
1560                 else
1561                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1562         }
1563         if (changed_flags & FIF_ALLMULTI) {
1564                 if (*total_flags & FIF_ALLMULTI)
1565                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1566                 else
1567                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1568         }
1569         if (changed_flags & FIF_CONTROL) {
1570                 if (*total_flags & FIF_CONTROL)
1571                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1572                 else
1573                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1574         }
1575         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1576                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1577                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1578                 else
1579                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1580         }
1581
1582         /* We avoid iwl_commit_rxon here to commit the new filter flags
1583          * since mac80211 will call ieee80211_hw_config immediately.
1584          * (mc_list is not supported at this time). Otherwise, we need to
1585          * queue a background iwl_commit_rxon work.
1586          */
1587
1588         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1589                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1590 }
1591 EXPORT_SYMBOL(iwl_configure_filter);
1592
1593 int iwl_set_hw_params(struct iwl_priv *priv)
1594 {
1595         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1596         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1597         if (priv->cfg->mod_params->amsdu_size_8K)
1598                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
1599         else
1600                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
1601
1602         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1603
1604         if (priv->cfg->mod_params->disable_11n)
1605                 priv->cfg->sku &= ~IWL_SKU_N;
1606
1607         /* Device-specific setup */
1608         return priv->cfg->ops->lib->set_hw_params(priv);
1609 }
1610 EXPORT_SYMBOL(iwl_set_hw_params);
1611
1612 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1613 {
1614         int ret = 0;
1615         s8 prev_tx_power = priv->tx_power_user_lmt;
1616
1617         if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1618                 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1619                          tx_power,
1620                          IWL_TX_POWER_TARGET_POWER_MIN);
1621                 return -EINVAL;
1622         }
1623
1624         if (tx_power > priv->tx_power_device_lmt) {
1625                 IWL_WARN(priv,
1626                         "Requested user TXPOWER %d above upper limit %d.\n",
1627                          tx_power, priv->tx_power_device_lmt);
1628                 return -EINVAL;
1629         }
1630
1631         if (priv->tx_power_user_lmt != tx_power)
1632                 force = true;
1633
1634         /* if nic is not up don't send command */
1635         if (iwl_is_ready_rf(priv)) {
1636                 priv->tx_power_user_lmt = tx_power;
1637                 if (force && priv->cfg->ops->lib->send_tx_power)
1638                         ret = priv->cfg->ops->lib->send_tx_power(priv);
1639                 else if (!priv->cfg->ops->lib->send_tx_power)
1640                         ret = -EOPNOTSUPP;
1641                 /*
1642                  * if fail to set tx_power, restore the orig. tx power
1643                  */
1644                 if (ret)
1645                         priv->tx_power_user_lmt = prev_tx_power;
1646         }
1647
1648         /*
1649          * Even this is an async host command, the command
1650          * will always report success from uCode
1651          * So once driver can placing the command into the queue
1652          * successfully, driver can use priv->tx_power_user_lmt
1653          * to reflect the current tx power
1654          */
1655         return ret;
1656 }
1657 EXPORT_SYMBOL(iwl_set_tx_power);
1658
1659 #define ICT_COUNT (PAGE_SIZE/sizeof(u32))
1660
1661 /* Free dram table */
1662 void iwl_free_isr_ict(struct iwl_priv *priv)
1663 {
1664         if (priv->ict_tbl_vir) {
1665                 pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
1666                                         PAGE_SIZE, priv->ict_tbl_vir,
1667                                         priv->ict_tbl_dma);
1668                 priv->ict_tbl_vir = NULL;
1669         }
1670 }
1671 EXPORT_SYMBOL(iwl_free_isr_ict);
1672
1673
1674 /* allocate dram shared table it is a PAGE_SIZE aligned
1675  * also reset all data related to ICT table interrupt.
1676  */
1677 int iwl_alloc_isr_ict(struct iwl_priv *priv)
1678 {
1679
1680         if (priv->cfg->use_isr_legacy)
1681                 return 0;
1682         /* allocate shrared data table */
1683         priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
1684                                                   ICT_COUNT) + PAGE_SIZE,
1685                                                   &priv->ict_tbl_dma);
1686         if (!priv->ict_tbl_vir)
1687                 return -ENOMEM;
1688
1689         /* align table to PAGE_SIZE boundry */
1690         priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
1691
1692         IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
1693                              (unsigned long long)priv->ict_tbl_dma,
1694                              (unsigned long long)priv->aligned_ict_tbl_dma,
1695                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1696
1697         priv->ict_tbl =  priv->ict_tbl_vir +
1698                           (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
1699
1700         IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
1701                              priv->ict_tbl, priv->ict_tbl_vir,
1702                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1703
1704         /* reset table and index to all 0 */
1705         memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
1706         priv->ict_index = 0;
1707
1708         /* add periodic RX interrupt */
1709         priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
1710         return 0;
1711 }
1712 EXPORT_SYMBOL(iwl_alloc_isr_ict);
1713
1714 /* Device is going up inform it about using ICT interrupt table,
1715  * also we need to tell the driver to start using ICT interrupt.
1716  */
1717 int iwl_reset_ict(struct iwl_priv *priv)
1718 {
1719         u32 val;
1720         unsigned long flags;
1721
1722         if (!priv->ict_tbl_vir)
1723                 return 0;
1724
1725         spin_lock_irqsave(&priv->lock, flags);
1726         iwl_disable_interrupts(priv);
1727
1728         memset(&priv->ict_tbl[0], 0, sizeof(u32) * ICT_COUNT);
1729
1730         val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
1731
1732         val |= CSR_DRAM_INT_TBL_ENABLE;
1733         val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
1734
1735         IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
1736                         "aligned dma address %Lx\n",
1737                         val, (unsigned long long)priv->aligned_ict_tbl_dma);
1738
1739         iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
1740         priv->use_ict = true;
1741         priv->ict_index = 0;
1742         iwl_write32(priv, CSR_INT, priv->inta_mask);
1743         iwl_enable_interrupts(priv);
1744         spin_unlock_irqrestore(&priv->lock, flags);
1745
1746         return 0;
1747 }
1748 EXPORT_SYMBOL(iwl_reset_ict);
1749
1750 /* Device is going down disable ict interrupt usage */
1751 void iwl_disable_ict(struct iwl_priv *priv)
1752 {
1753         unsigned long flags;
1754
1755         spin_lock_irqsave(&priv->lock, flags);
1756         priv->use_ict = false;
1757         spin_unlock_irqrestore(&priv->lock, flags);
1758 }
1759 EXPORT_SYMBOL(iwl_disable_ict);
1760
1761 /* interrupt handler using ict table, with this interrupt driver will
1762  * stop using INTA register to get device's interrupt, reading this register
1763  * is expensive, device will write interrupts in ICT dram table, increment
1764  * index then will fire interrupt to driver, driver will OR all ICT table
1765  * entries from current index up to table entry with 0 value. the result is
1766  * the interrupt we need to service, driver will set the entries back to 0 and
1767  * set index.
1768  */
1769 irqreturn_t iwl_isr_ict(int irq, void *data)
1770 {
1771         struct iwl_priv *priv = data;
1772         u32 inta, inta_mask;
1773         u32 val = 0;
1774
1775         if (!priv)
1776                 return IRQ_NONE;
1777
1778         /* dram interrupt table not set yet,
1779          * use legacy interrupt.
1780          */
1781         if (!priv->use_ict)
1782                 return iwl_isr(irq, data);
1783
1784         spin_lock(&priv->lock);
1785
1786         /* Disable (but don't clear!) interrupts here to avoid
1787          * back-to-back ISRs and sporadic interrupts from our NIC.
1788          * If we have something to service, the tasklet will re-enable ints.
1789          * If we *don't* have something, we'll re-enable before leaving here.
1790          */
1791         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1792         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1793
1794
1795         /* Ignore interrupt if there's nothing in NIC to service.
1796          * This may be due to IRQ shared with another device,
1797          * or due to sporadic interrupts thrown from our NIC. */
1798         if (!priv->ict_tbl[priv->ict_index]) {
1799                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1800                 goto none;
1801         }
1802
1803         /* read all entries that not 0 start with ict_index */
1804         while (priv->ict_tbl[priv->ict_index]) {
1805
1806                 val |= le32_to_cpu(priv->ict_tbl[priv->ict_index]);
1807                 IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1808                                 priv->ict_index,
1809                                 le32_to_cpu(priv->ict_tbl[priv->ict_index]));
1810                 priv->ict_tbl[priv->ict_index] = 0;
1811                 priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1812                                                      ICT_COUNT);
1813
1814         }
1815
1816         /* We should not get this value, just ignore it. */
1817         if (val == 0xffffffff)
1818                 val = 0;
1819
1820         inta = (0xff & val) | ((0xff00 & val) << 16);
1821         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
1822                         inta, inta_mask, val);
1823
1824         inta &= priv->inta_mask;
1825         priv->inta |= inta;
1826
1827         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1828         if (likely(inta))
1829                 tasklet_schedule(&priv->irq_tasklet);
1830         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
1831                 /* Allow interrupt if was disabled by this handler and
1832                  * no tasklet was schedules, We should not enable interrupt,
1833                  * tasklet will enable it.
1834                  */
1835                 iwl_enable_interrupts(priv);
1836         }
1837
1838         spin_unlock(&priv->lock);
1839         return IRQ_HANDLED;
1840
1841  none:
1842         /* re-enable interrupts here since we don't have anything to service.
1843          * only Re-enable if disabled by irq.
1844          */
1845         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1846                 iwl_enable_interrupts(priv);
1847
1848         spin_unlock(&priv->lock);
1849         return IRQ_NONE;
1850 }
1851 EXPORT_SYMBOL(iwl_isr_ict);
1852
1853
1854 static irqreturn_t iwl_isr(int irq, void *data)
1855 {
1856         struct iwl_priv *priv = data;
1857         u32 inta, inta_mask;
1858 #ifdef CONFIG_IWLWIFI_DEBUG
1859         u32 inta_fh;
1860 #endif
1861         if (!priv)
1862                 return IRQ_NONE;
1863
1864         spin_lock(&priv->lock);
1865
1866         /* Disable (but don't clear!) interrupts here to avoid
1867          *    back-to-back ISRs and sporadic interrupts from our NIC.
1868          * If we have something to service, the tasklet will re-enable ints.
1869          * If we *don't* have something, we'll re-enable before leaving here. */
1870         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1871         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1872
1873         /* Discover which interrupts are active/pending */
1874         inta = iwl_read32(priv, CSR_INT);
1875
1876         /* Ignore interrupt if there's nothing in NIC to service.
1877          * This may be due to IRQ shared with another device,
1878          * or due to sporadic interrupts thrown from our NIC. */
1879         if (!inta) {
1880                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1881                 goto none;
1882         }
1883
1884         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1885                 /* Hardware disappeared. It might have already raised
1886                  * an interrupt */
1887                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1888                 goto unplugged;
1889         }
1890
1891 #ifdef CONFIG_IWLWIFI_DEBUG
1892         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1893                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1894                 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
1895                               "fh 0x%08x\n", inta, inta_mask, inta_fh);
1896         }
1897 #endif
1898
1899         priv->inta |= inta;
1900         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1901         if (likely(inta))
1902                 tasklet_schedule(&priv->irq_tasklet);
1903         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1904                 iwl_enable_interrupts(priv);
1905
1906  unplugged:
1907         spin_unlock(&priv->lock);
1908         return IRQ_HANDLED;
1909
1910  none:
1911         /* re-enable interrupts here since we don't have anything to service. */
1912         /* only Re-enable if diabled by irq  and no schedules tasklet. */
1913         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1914                 iwl_enable_interrupts(priv);
1915
1916         spin_unlock(&priv->lock);
1917         return IRQ_NONE;
1918 }
1919
1920 irqreturn_t iwl_isr_legacy(int irq, void *data)
1921 {
1922         struct iwl_priv *priv = data;
1923         u32 inta, inta_mask;
1924         u32 inta_fh;
1925         if (!priv)
1926                 return IRQ_NONE;
1927
1928         spin_lock(&priv->lock);
1929
1930         /* Disable (but don't clear!) interrupts here to avoid
1931          *    back-to-back ISRs and sporadic interrupts from our NIC.
1932          * If we have something to service, the tasklet will re-enable ints.
1933          * If we *don't* have something, we'll re-enable before leaving here. */
1934         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1935         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1936
1937         /* Discover which interrupts are active/pending */
1938         inta = iwl_read32(priv, CSR_INT);
1939         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1940
1941         /* Ignore interrupt if there's nothing in NIC to service.
1942          * This may be due to IRQ shared with another device,
1943          * or due to sporadic interrupts thrown from our NIC. */
1944         if (!inta && !inta_fh) {
1945                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1946                 goto none;
1947         }
1948
1949         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1950                 /* Hardware disappeared. It might have already raised
1951                  * an interrupt */
1952                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1953                 goto unplugged;
1954         }
1955
1956         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1957                       inta, inta_mask, inta_fh);
1958
1959         inta &= ~CSR_INT_BIT_SCD;
1960
1961         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1962         if (likely(inta || inta_fh))
1963                 tasklet_schedule(&priv->irq_tasklet);
1964
1965  unplugged:
1966         spin_unlock(&priv->lock);
1967         return IRQ_HANDLED;
1968
1969  none:
1970         /* re-enable interrupts here since we don't have anything to service. */
1971         /* only Re-enable if diabled by irq */
1972         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1973                 iwl_enable_interrupts(priv);
1974         spin_unlock(&priv->lock);
1975         return IRQ_NONE;
1976 }
1977 EXPORT_SYMBOL(iwl_isr_legacy);
1978
1979 int iwl_send_bt_config(struct iwl_priv *priv)
1980 {
1981         struct iwl_bt_cmd bt_cmd = {
1982                 .flags = BT_COEX_MODE_4W,
1983                 .lead_time = BT_LEAD_TIME_DEF,
1984                 .max_kill = BT_MAX_KILL_DEF,
1985                 .kill_ack_mask = 0,
1986                 .kill_cts_mask = 0,
1987         };
1988
1989         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1990                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
1991 }
1992 EXPORT_SYMBOL(iwl_send_bt_config);
1993
1994 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
1995 {
1996         struct iwl_statistics_cmd statistics_cmd = {
1997                 .configuration_flags =
1998                         clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
1999         };
2000
2001         if (flags & CMD_ASYNC)
2002                 return iwl_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD,
2003                                                sizeof(struct iwl_statistics_cmd),
2004                                                &statistics_cmd, NULL);
2005         else
2006                 return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
2007                                         sizeof(struct iwl_statistics_cmd),
2008                                         &statistics_cmd);
2009 }
2010 EXPORT_SYMBOL(iwl_send_statistics_request);
2011
2012 /**
2013  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
2014  *   using sample data 100 bytes apart.  If these sample points are good,
2015  *   it's a pretty good bet that everything between them is good, too.
2016  */
2017 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2018 {
2019         u32 val;
2020         int ret = 0;
2021         u32 errcnt = 0;
2022         u32 i;
2023
2024         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2025
2026         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2027                 /* read data comes through single port, auto-incr addr */
2028                 /* NOTE: Use the debugless read so we don't flood kernel log
2029                  * if IWL_DL_IO is set */
2030                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2031                         i + IWL49_RTC_INST_LOWER_BOUND);
2032                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2033                 if (val != le32_to_cpu(*image)) {
2034                         ret = -EIO;
2035                         errcnt++;
2036                         if (errcnt >= 3)
2037                                 break;
2038                 }
2039         }
2040
2041         return ret;
2042 }
2043
2044 /**
2045  * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
2046  *     looking at all data.
2047  */
2048 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
2049                                  u32 len)
2050 {
2051         u32 val;
2052         u32 save_len = len;
2053         int ret = 0;
2054         u32 errcnt;
2055
2056         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2057
2058         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2059                            IWL49_RTC_INST_LOWER_BOUND);
2060
2061         errcnt = 0;
2062         for (; len > 0; len -= sizeof(u32), image++) {
2063                 /* read data comes through single port, auto-incr addr */
2064                 /* NOTE: Use the debugless read so we don't flood kernel log
2065                  * if IWL_DL_IO is set */
2066                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2067                 if (val != le32_to_cpu(*image)) {
2068                         IWL_ERR(priv, "uCode INST section is invalid at "
2069                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2070                                   save_len - len, val, le32_to_cpu(*image));
2071                         ret = -EIO;
2072                         errcnt++;
2073                         if (errcnt >= 20)
2074                                 break;
2075                 }
2076         }
2077
2078         if (!errcnt)
2079                 IWL_DEBUG_INFO(priv,
2080                     "ucode image in INSTRUCTION memory is good\n");
2081
2082         return ret;
2083 }
2084
2085 /**
2086  * iwl_verify_ucode - determine which instruction image is in SRAM,
2087  *    and verify its contents
2088  */
2089 int iwl_verify_ucode(struct iwl_priv *priv)
2090 {
2091         __le32 *image;
2092         u32 len;
2093         int ret;
2094
2095         /* Try bootstrap */
2096         image = (__le32 *)priv->ucode_boot.v_addr;
2097         len = priv->ucode_boot.len;
2098         ret = iwlcore_verify_inst_sparse(priv, image, len);
2099         if (!ret) {
2100                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2101                 return 0;
2102         }
2103
2104         /* Try initialize */
2105         image = (__le32 *)priv->ucode_init.v_addr;
2106         len = priv->ucode_init.len;
2107         ret = iwlcore_verify_inst_sparse(priv, image, len);
2108         if (!ret) {
2109                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2110                 return 0;
2111         }
2112
2113         /* Try runtime/protocol */
2114         image = (__le32 *)priv->ucode_code.v_addr;
2115         len = priv->ucode_code.len;
2116         ret = iwlcore_verify_inst_sparse(priv, image, len);
2117         if (!ret) {
2118                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2119                 return 0;
2120         }
2121
2122         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2123
2124         /* Since nothing seems to match, show first several data entries in
2125          * instruction SRAM, so maybe visual inspection will give a clue.
2126          * Selection of bootstrap image (vs. other images) is arbitrary. */
2127         image = (__le32 *)priv->ucode_boot.v_addr;
2128         len = priv->ucode_boot.len;
2129         ret = iwl_verify_inst_full(priv, image, len);
2130
2131         return ret;
2132 }
2133 EXPORT_SYMBOL(iwl_verify_ucode);
2134
2135
2136 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2137 {
2138         struct iwl_ct_kill_config cmd;
2139         struct iwl_ct_kill_throttling_config adv_cmd;
2140         unsigned long flags;
2141         int ret = 0;
2142
2143         spin_lock_irqsave(&priv->lock, flags);
2144         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2145                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2146         spin_unlock_irqrestore(&priv->lock, flags);
2147         priv->thermal_throttle.ct_kill_toggle = false;
2148
2149         if (priv->cfg->support_ct_kill_exit) {
2150                 adv_cmd.critical_temperature_enter =
2151                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2152                 adv_cmd.critical_temperature_exit =
2153                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2154
2155                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2156                                        sizeof(adv_cmd), &adv_cmd);
2157                 if (ret)
2158                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2159                 else
2160                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2161                                         "succeeded, "
2162                                         "critical temperature enter is %d,"
2163                                         "exit is %d\n",
2164                                        priv->hw_params.ct_kill_threshold,
2165                                        priv->hw_params.ct_kill_exit_threshold);
2166         } else {
2167                 cmd.critical_temperature_R =
2168                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2169
2170                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2171                                        sizeof(cmd), &cmd);
2172                 if (ret)
2173                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2174                 else
2175                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2176                                         "succeeded, "
2177                                         "critical temperature is %d\n",
2178                                         priv->hw_params.ct_kill_threshold);
2179         }
2180 }
2181 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2182
2183
2184 /*
2185  * CARD_STATE_CMD
2186  *
2187  * Use: Sets the device's internal card state to enable, disable, or halt
2188  *
2189  * When in the 'enable' state the card operates as normal.
2190  * When in the 'disable' state, the card enters into a low power mode.
2191  * When in the 'halt' state, the card is shut down and must be fully
2192  * restarted to come back on.
2193  */
2194 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2195 {
2196         struct iwl_host_cmd cmd = {
2197                 .id = REPLY_CARD_STATE_CMD,
2198                 .len = sizeof(u32),
2199                 .data = &flags,
2200                 .flags = meta_flag,
2201         };
2202
2203         return iwl_send_cmd(priv, &cmd);
2204 }
2205
2206 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2207                            struct iwl_rx_mem_buffer *rxb)
2208 {
2209 #ifdef CONFIG_IWLWIFI_DEBUG
2210         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2211         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2212         IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2213                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2214 #endif
2215 }
2216 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2217
2218 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2219                                       struct iwl_rx_mem_buffer *rxb)
2220 {
2221         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2222         u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
2223         IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2224                         "notification for %s:\n", len,
2225                         get_cmd_string(pkt->hdr.cmd));
2226         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
2227 }
2228 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2229
2230 void iwl_rx_reply_error(struct iwl_priv *priv,
2231                         struct iwl_rx_mem_buffer *rxb)
2232 {
2233         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2234
2235         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2236                 "seq 0x%04X ser 0x%08X\n",
2237                 le32_to_cpu(pkt->u.err_resp.error_type),
2238                 get_cmd_string(pkt->u.err_resp.cmd_id),
2239                 pkt->u.err_resp.cmd_id,
2240                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2241                 le32_to_cpu(pkt->u.err_resp.error_info));
2242 }
2243 EXPORT_SYMBOL(iwl_rx_reply_error);
2244
2245 void iwl_clear_isr_stats(struct iwl_priv *priv)
2246 {
2247         memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2248 }
2249
2250 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2251                            const struct ieee80211_tx_queue_params *params)
2252 {
2253         struct iwl_priv *priv = hw->priv;
2254         unsigned long flags;
2255         int q;
2256
2257         IWL_DEBUG_MAC80211(priv, "enter\n");
2258
2259         if (!iwl_is_ready_rf(priv)) {
2260                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2261                 return -EIO;
2262         }
2263
2264         if (queue >= AC_NUM) {
2265                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2266                 return 0;
2267         }
2268
2269         q = AC_NUM - 1 - queue;
2270
2271         spin_lock_irqsave(&priv->lock, flags);
2272
2273         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2274         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2275         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2276         priv->qos_data.def_qos_parm.ac[q].edca_txop =
2277                         cpu_to_le16((params->txop * 32));
2278
2279         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2280         priv->qos_data.qos_active = 1;
2281
2282         if (priv->iw_mode == NL80211_IFTYPE_AP)
2283                 iwl_activate_qos(priv, 1);
2284         else if (priv->assoc_id && iwl_is_associated(priv))
2285                 iwl_activate_qos(priv, 0);
2286
2287         spin_unlock_irqrestore(&priv->lock, flags);
2288
2289         IWL_DEBUG_MAC80211(priv, "leave\n");
2290         return 0;
2291 }
2292 EXPORT_SYMBOL(iwl_mac_conf_tx);
2293
2294 static void iwl_ht_conf(struct iwl_priv *priv,
2295                         struct ieee80211_bss_conf *bss_conf)
2296 {
2297         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2298         struct ieee80211_sta *sta;
2299
2300         IWL_DEBUG_MAC80211(priv, "enter: \n");
2301
2302         if (!ht_conf->is_ht)
2303                 return;
2304
2305         ht_conf->ht_protection =
2306                 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2307         ht_conf->non_GF_STA_present =
2308                 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2309
2310         ht_conf->single_chain_sufficient = false;
2311
2312         switch (priv->iw_mode) {
2313         case NL80211_IFTYPE_STATION:
2314                 rcu_read_lock();
2315                 sta = ieee80211_find_sta(priv->vif, priv->bssid);
2316                 if (sta) {
2317                         struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
2318                         int maxstreams;
2319
2320                         maxstreams = (ht_cap->mcs.tx_params &
2321                                       IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
2322                                         >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2323                         maxstreams += 1;
2324
2325                         if ((ht_cap->mcs.rx_mask[1] == 0) &&
2326                             (ht_cap->mcs.rx_mask[2] == 0))
2327                                 ht_conf->single_chain_sufficient = true;
2328                         if (maxstreams <= 1)
2329                                 ht_conf->single_chain_sufficient = true;
2330                 } else {
2331                         /*
2332                          * If at all, this can only happen through a race
2333                          * when the AP disconnects us while we're still
2334                          * setting up the connection, in that case mac80211
2335                          * will soon tell us about that.
2336                          */
2337                         ht_conf->single_chain_sufficient = true;
2338                 }
2339                 rcu_read_unlock();
2340                 break;
2341         case NL80211_IFTYPE_ADHOC:
2342                 ht_conf->single_chain_sufficient = true;
2343                 break;
2344         default:
2345                 break;
2346         }
2347
2348         IWL_DEBUG_MAC80211(priv, "leave\n");
2349 }
2350
2351 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2352 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2353                           struct ieee80211_vif *vif,
2354                           struct ieee80211_bss_conf *bss_conf,
2355                           u32 changes)
2356 {
2357         struct iwl_priv *priv = hw->priv;
2358         int ret;
2359
2360         IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2361
2362         if (!iwl_is_alive(priv))
2363                 return;
2364
2365         mutex_lock(&priv->mutex);
2366
2367         if (changes & BSS_CHANGED_BEACON &&
2368             priv->iw_mode == NL80211_IFTYPE_AP) {
2369                 dev_kfree_skb(priv->ibss_beacon);
2370                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2371         }
2372
2373         if (changes & BSS_CHANGED_BEACON_INT) {
2374                 priv->beacon_int = bss_conf->beacon_int;
2375                 /* TODO: in AP mode, do something to make this take effect */
2376         }
2377
2378         if (changes & BSS_CHANGED_BSSID) {
2379                 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2380
2381                 /*
2382                  * If there is currently a HW scan going on in the
2383                  * background then we need to cancel it else the RXON
2384                  * below/in post_associate will fail.
2385                  */
2386                 if (iwl_scan_cancel_timeout(priv, 100)) {
2387                         IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2388                         IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2389                         mutex_unlock(&priv->mutex);
2390                         return;
2391                 }
2392
2393                 /* mac80211 only sets assoc when in STATION mode */
2394                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2395                     bss_conf->assoc) {
2396                         memcpy(priv->staging_rxon.bssid_addr,
2397                                bss_conf->bssid, ETH_ALEN);
2398
2399                         /* currently needed in a few places */
2400                         memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2401                 } else {
2402                         priv->staging_rxon.filter_flags &=
2403                                 ~RXON_FILTER_ASSOC_MSK;
2404                 }
2405
2406         }
2407
2408         /*
2409          * This needs to be after setting the BSSID in case
2410          * mac80211 decides to do both changes at once because
2411          * it will invoke post_associate.
2412          */
2413         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2414             changes & BSS_CHANGED_BEACON) {
2415                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2416
2417                 if (beacon)
2418                         iwl_mac_beacon_update(hw, beacon);
2419         }
2420
2421         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2422                 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2423                                    bss_conf->use_short_preamble);
2424                 if (bss_conf->use_short_preamble)
2425                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2426                 else
2427                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2428         }
2429
2430         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2431                 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2432                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2433                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2434                 else
2435                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2436         }
2437
2438         if (changes & BSS_CHANGED_BASIC_RATES) {
2439                 /* XXX use this information
2440                  *
2441                  * To do that, remove code from iwl_set_rate() and put something
2442                  * like this here:
2443                  *
2444                 if (A-band)
2445                         priv->staging_rxon.ofdm_basic_rates =
2446                                 bss_conf->basic_rates;
2447                 else
2448                         priv->staging_rxon.ofdm_basic_rates =
2449                                 bss_conf->basic_rates >> 4;
2450                         priv->staging_rxon.cck_basic_rates =
2451                                 bss_conf->basic_rates & 0xF;
2452                  */
2453         }
2454
2455         if (changes & BSS_CHANGED_HT) {
2456                 iwl_ht_conf(priv, bss_conf);
2457
2458                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2459                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2460         }
2461
2462         if (changes & BSS_CHANGED_ASSOC) {
2463                 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2464                 if (bss_conf->assoc) {
2465                         priv->assoc_id = bss_conf->aid;
2466                         priv->beacon_int = bss_conf->beacon_int;
2467                         priv->timestamp = bss_conf->timestamp;
2468                         priv->assoc_capability = bss_conf->assoc_capability;
2469
2470                         iwl_led_associate(priv);
2471
2472                         /*
2473                          * We have just associated, don't start scan too early
2474                          * leave time for EAPOL exchange to complete.
2475                          *
2476                          * XXX: do this in mac80211
2477                          */
2478                         priv->next_scan_jiffies = jiffies +
2479                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2480                         if (!iwl_is_rfkill(priv))
2481                                 priv->cfg->ops->lib->post_associate(priv);
2482                 } else {
2483                         priv->assoc_id = 0;
2484                         iwl_led_disassociate(priv);
2485                 }
2486         }
2487
2488         if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2489                 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2490                                    changes);
2491                 ret = iwl_send_rxon_assoc(priv);
2492                 if (!ret) {
2493                         /* Sync active_rxon with latest change. */
2494                         memcpy((void *)&priv->active_rxon,
2495                                 &priv->staging_rxon,
2496                                 sizeof(struct iwl_rxon_cmd));
2497                 }
2498         }
2499
2500         mutex_unlock(&priv->mutex);
2501
2502         IWL_DEBUG_MAC80211(priv, "leave\n");
2503 }
2504 EXPORT_SYMBOL(iwl_bss_info_changed);
2505
2506 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2507 {
2508         struct iwl_priv *priv = hw->priv;
2509         unsigned long flags;
2510         __le64 timestamp;
2511
2512         IWL_DEBUG_MAC80211(priv, "enter\n");
2513
2514         if (!iwl_is_ready_rf(priv)) {
2515                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2516                 return -EIO;
2517         }
2518
2519         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2520                 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2521                 return -EIO;
2522         }
2523
2524         spin_lock_irqsave(&priv->lock, flags);
2525
2526         if (priv->ibss_beacon)
2527                 dev_kfree_skb(priv->ibss_beacon);
2528
2529         priv->ibss_beacon = skb;
2530
2531         priv->assoc_id = 0;
2532         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2533         priv->timestamp = le64_to_cpu(timestamp);
2534
2535         IWL_DEBUG_MAC80211(priv, "leave\n");
2536         spin_unlock_irqrestore(&priv->lock, flags);
2537
2538         iwl_reset_qos(priv);
2539
2540         priv->cfg->ops->lib->post_associate(priv);
2541
2542
2543         return 0;
2544 }
2545 EXPORT_SYMBOL(iwl_mac_beacon_update);
2546
2547 int iwl_set_mode(struct iwl_priv *priv, int mode)
2548 {
2549         if (mode == NL80211_IFTYPE_ADHOC) {
2550                 const struct iwl_channel_info *ch_info;
2551
2552                 ch_info = iwl_get_channel_info(priv,
2553                         priv->band,
2554                         le16_to_cpu(priv->staging_rxon.channel));
2555
2556                 if (!ch_info || !is_channel_ibss(ch_info)) {
2557                         IWL_ERR(priv, "channel %d not IBSS channel\n",
2558                                   le16_to_cpu(priv->staging_rxon.channel));
2559                         return -EINVAL;
2560                 }
2561         }
2562
2563         iwl_connection_init_rx_config(priv, mode);
2564
2565         if (priv->cfg->ops->hcmd->set_rxon_chain)
2566                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2567
2568         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2569
2570         iwl_clear_stations_table(priv);
2571
2572         /* dont commit rxon if rf-kill is on*/
2573         if (!iwl_is_ready_rf(priv))
2574                 return -EAGAIN;
2575
2576         iwlcore_commit_rxon(priv);
2577
2578         return 0;
2579 }
2580 EXPORT_SYMBOL(iwl_set_mode);
2581
2582 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2583                                  struct ieee80211_if_init_conf *conf)
2584 {
2585         struct iwl_priv *priv = hw->priv;
2586         unsigned long flags;
2587
2588         IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2589
2590         if (priv->vif) {
2591                 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2592                 return -EOPNOTSUPP;
2593         }
2594
2595         spin_lock_irqsave(&priv->lock, flags);
2596         priv->vif = conf->vif;
2597         priv->iw_mode = conf->type;
2598
2599         spin_unlock_irqrestore(&priv->lock, flags);
2600
2601         mutex_lock(&priv->mutex);
2602
2603         if (conf->mac_addr) {
2604                 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2605                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2606         }
2607
2608         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2609                 /* we are not ready, will run again when ready */
2610                 set_bit(STATUS_MODE_PENDING, &priv->status);
2611
2612         mutex_unlock(&priv->mutex);
2613
2614         IWL_DEBUG_MAC80211(priv, "leave\n");
2615         return 0;
2616 }
2617 EXPORT_SYMBOL(iwl_mac_add_interface);
2618
2619 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2620                                      struct ieee80211_if_init_conf *conf)
2621 {
2622         struct iwl_priv *priv = hw->priv;
2623
2624         IWL_DEBUG_MAC80211(priv, "enter\n");
2625
2626         mutex_lock(&priv->mutex);
2627
2628         if (iwl_is_ready_rf(priv)) {
2629                 iwl_scan_cancel_timeout(priv, 100);
2630                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2631                 iwlcore_commit_rxon(priv);
2632         }
2633         if (priv->vif == conf->vif) {
2634                 priv->vif = NULL;
2635                 memset(priv->bssid, 0, ETH_ALEN);
2636         }
2637         mutex_unlock(&priv->mutex);
2638
2639         IWL_DEBUG_MAC80211(priv, "leave\n");
2640
2641 }
2642 EXPORT_SYMBOL(iwl_mac_remove_interface);
2643
2644 /**
2645  * iwl_mac_config - mac80211 config callback
2646  *
2647  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2648  * be set inappropriately and the driver currently sets the hardware up to
2649  * use it whenever needed.
2650  */
2651 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2652 {
2653         struct iwl_priv *priv = hw->priv;
2654         const struct iwl_channel_info *ch_info;
2655         struct ieee80211_conf *conf = &hw->conf;
2656         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2657         unsigned long flags = 0;
2658         int ret = 0;
2659         u16 ch;
2660         int scan_active = 0;
2661
2662         mutex_lock(&priv->mutex);
2663
2664         IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2665                                         conf->channel->hw_value, changed);
2666
2667         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2668                         test_bit(STATUS_SCANNING, &priv->status))) {
2669                 scan_active = 1;
2670                 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2671         }
2672
2673
2674         /* during scanning mac80211 will delay channel setting until
2675          * scan finish with changed = 0
2676          */
2677         if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2678                 if (scan_active)
2679                         goto set_ch_out;
2680
2681                 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2682                 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2683                 if (!is_channel_valid(ch_info)) {
2684                         IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2685                         ret = -EINVAL;
2686                         goto set_ch_out;
2687                 }
2688
2689                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2690                         !is_channel_ibss(ch_info)) {
2691                         IWL_ERR(priv, "channel %d in band %d not "
2692                                 "IBSS channel\n",
2693                                 conf->channel->hw_value, conf->channel->band);
2694                         ret = -EINVAL;
2695                         goto set_ch_out;
2696                 }
2697
2698                 spin_lock_irqsave(&priv->lock, flags);
2699
2700                 /* Configure HT40 channels */
2701                 ht_conf->is_ht = conf_is_ht(conf);
2702                 if (ht_conf->is_ht) {
2703                         if (conf_is_ht40_minus(conf)) {
2704                                 ht_conf->extension_chan_offset =
2705                                         IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2706                                 ht_conf->is_40mhz = true;
2707                         } else if (conf_is_ht40_plus(conf)) {
2708                                 ht_conf->extension_chan_offset =
2709                                         IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2710                                 ht_conf->is_40mhz = true;
2711                         } else {
2712                                 ht_conf->extension_chan_offset =
2713                                         IEEE80211_HT_PARAM_CHA_SEC_NONE;
2714                                 ht_conf->is_40mhz = false;
2715                         }
2716                 } else
2717                         ht_conf->is_40mhz = false;
2718                 /* Default to no protection. Protection mode will later be set
2719                  * from BSS config in iwl_ht_conf */
2720                 ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2721
2722                 /* if we are switching from ht to 2.4 clear flags
2723                  * from any ht related info since 2.4 does not
2724                  * support ht */
2725                 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2726                         priv->staging_rxon.flags = 0;
2727
2728                 iwl_set_rxon_channel(priv, conf->channel);
2729
2730                 iwl_set_flags_for_band(priv, conf->channel->band);
2731                 spin_unlock_irqrestore(&priv->lock, flags);
2732                 if (iwl_is_associated(priv) &&
2733                     (le16_to_cpu(priv->active_rxon.channel) != ch) &&
2734                     priv->cfg->ops->lib->set_channel_switch) {
2735                         iwl_set_rate(priv);
2736                         /*
2737                          * at this point, staging_rxon has the
2738                          * configuration for channel switch
2739                          */
2740                         ret = priv->cfg->ops->lib->set_channel_switch(priv,
2741                                 ch);
2742                         if (!ret) {
2743                                 iwl_print_rx_config_cmd(priv);
2744                                 goto out;
2745                         }
2746                         priv->switch_rxon.switch_in_progress = false;
2747                 }
2748  set_ch_out:
2749                 /* The list of supported rates and rate mask can be different
2750                  * for each band; since the band may have changed, reset
2751                  * the rate mask to what mac80211 lists */
2752                 iwl_set_rate(priv);
2753         }
2754
2755         if (changed & (IEEE80211_CONF_CHANGE_PS |
2756                         IEEE80211_CONF_CHANGE_IDLE)) {
2757                 ret = iwl_power_update_mode(priv, false);
2758                 if (ret)
2759                         IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
2760         }
2761
2762         if (changed & IEEE80211_CONF_CHANGE_POWER) {
2763                 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2764                         priv->tx_power_user_lmt, conf->power_level);
2765
2766                 iwl_set_tx_power(priv, conf->power_level, false);
2767         }
2768
2769         /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2770         if (priv->cfg->ops->hcmd->set_rxon_chain)
2771                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2772
2773         if (!iwl_is_ready(priv)) {
2774                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2775                 goto out;
2776         }
2777
2778         if (scan_active)
2779                 goto out;
2780
2781         if (memcmp(&priv->active_rxon,
2782                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2783                 iwlcore_commit_rxon(priv);
2784         else
2785                 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2786
2787
2788 out:
2789         IWL_DEBUG_MAC80211(priv, "leave\n");
2790         mutex_unlock(&priv->mutex);
2791         return ret;
2792 }
2793 EXPORT_SYMBOL(iwl_mac_config);
2794
2795 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2796                          struct ieee80211_tx_queue_stats *stats)
2797 {
2798         struct iwl_priv *priv = hw->priv;
2799         int i, avail;
2800         struct iwl_tx_queue *txq;
2801         struct iwl_queue *q;
2802         unsigned long flags;
2803
2804         IWL_DEBUG_MAC80211(priv, "enter\n");
2805
2806         if (!iwl_is_ready_rf(priv)) {
2807                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2808                 return -EIO;
2809         }
2810
2811         spin_lock_irqsave(&priv->lock, flags);
2812
2813         for (i = 0; i < AC_NUM; i++) {
2814                 txq = &priv->txq[i];
2815                 q = &txq->q;
2816                 avail = iwl_queue_space(q);
2817
2818                 stats[i].len = q->n_window - avail;
2819                 stats[i].limit = q->n_window - q->high_mark;
2820                 stats[i].count = q->n_window;
2821
2822         }
2823         spin_unlock_irqrestore(&priv->lock, flags);
2824
2825         IWL_DEBUG_MAC80211(priv, "leave\n");
2826
2827         return 0;
2828 }
2829 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2830
2831 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2832 {
2833         struct iwl_priv *priv = hw->priv;
2834         unsigned long flags;
2835
2836         mutex_lock(&priv->mutex);
2837         IWL_DEBUG_MAC80211(priv, "enter\n");
2838
2839         spin_lock_irqsave(&priv->lock, flags);
2840         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
2841         spin_unlock_irqrestore(&priv->lock, flags);
2842
2843         iwl_reset_qos(priv);
2844
2845         spin_lock_irqsave(&priv->lock, flags);
2846         priv->assoc_id = 0;
2847         priv->assoc_capability = 0;
2848         priv->assoc_station_added = 0;
2849
2850         /* new association get rid of ibss beacon skb */
2851         if (priv->ibss_beacon)
2852                 dev_kfree_skb(priv->ibss_beacon);
2853
2854         priv->ibss_beacon = NULL;
2855
2856         priv->beacon_int = priv->vif->bss_conf.beacon_int;
2857         priv->timestamp = 0;
2858         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2859                 priv->beacon_int = 0;
2860
2861         spin_unlock_irqrestore(&priv->lock, flags);
2862
2863         if (!iwl_is_ready_rf(priv)) {
2864                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2865                 mutex_unlock(&priv->mutex);
2866                 return;
2867         }
2868
2869         /* we are restarting association process
2870          * clear RXON_FILTER_ASSOC_MSK bit
2871          */
2872         if (priv->iw_mode != NL80211_IFTYPE_AP) {
2873                 iwl_scan_cancel_timeout(priv, 100);
2874                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2875                 iwlcore_commit_rxon(priv);
2876         }
2877
2878         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2879                 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2880                 mutex_unlock(&priv->mutex);
2881                 return;
2882         }
2883
2884         iwl_set_rate(priv);
2885
2886         mutex_unlock(&priv->mutex);
2887
2888         IWL_DEBUG_MAC80211(priv, "leave\n");
2889 }
2890 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2891
2892 int iwl_alloc_txq_mem(struct iwl_priv *priv)
2893 {
2894         if (!priv->txq)
2895                 priv->txq = kzalloc(
2896                         sizeof(struct iwl_tx_queue) * priv->cfg->num_of_queues,
2897                         GFP_KERNEL);
2898         if (!priv->txq) {
2899                 IWL_ERR(priv, "Not enough memory for txq \n");
2900                 return -ENOMEM;
2901         }
2902         return 0;
2903 }
2904 EXPORT_SYMBOL(iwl_alloc_txq_mem);
2905
2906 void iwl_free_txq_mem(struct iwl_priv *priv)
2907 {
2908         kfree(priv->txq);
2909         priv->txq = NULL;
2910 }
2911 EXPORT_SYMBOL(iwl_free_txq_mem);
2912
2913 int iwl_send_wimax_coex(struct iwl_priv *priv)
2914 {
2915         struct iwl_wimax_coex_cmd uninitialized_var(coex_cmd);
2916
2917         if (priv->cfg->support_wimax_coexist) {
2918                 /* UnMask wake up src at associated sleep */
2919                 coex_cmd.flags |= COEX_FLAGS_ASSOC_WA_UNMASK_MSK;
2920
2921                 /* UnMask wake up src at unassociated sleep */
2922                 coex_cmd.flags |= COEX_FLAGS_UNASSOC_WA_UNMASK_MSK;
2923                 memcpy(coex_cmd.sta_prio, cu_priorities,
2924                         sizeof(struct iwl_wimax_coex_event_entry) *
2925                          COEX_NUM_OF_EVENTS);
2926
2927                 /* enabling the coexistence feature */
2928                 coex_cmd.flags |= COEX_FLAGS_COEX_ENABLE_MSK;
2929
2930                 /* enabling the priorities tables */
2931                 coex_cmd.flags |= COEX_FLAGS_STA_TABLE_VALID_MSK;
2932         } else {
2933                 /* coexistence is disabled */
2934                 memset(&coex_cmd, 0, sizeof(coex_cmd));
2935         }
2936         return iwl_send_cmd_pdu(priv, COEX_PRIORITY_TABLE_CMD,
2937                                 sizeof(coex_cmd), &coex_cmd);
2938 }
2939 EXPORT_SYMBOL(iwl_send_wimax_coex);
2940
2941 #ifdef CONFIG_IWLWIFI_DEBUGFS
2942
2943 #define IWL_TRAFFIC_DUMP_SIZE   (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2944
2945 void iwl_reset_traffic_log(struct iwl_priv *priv)
2946 {
2947         priv->tx_traffic_idx = 0;
2948         priv->rx_traffic_idx = 0;
2949         if (priv->tx_traffic)
2950                 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2951         if (priv->rx_traffic)
2952                 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2953 }
2954
2955 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2956 {
2957         u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2958
2959         if (iwl_debug_level & IWL_DL_TX) {
2960                 if (!priv->tx_traffic) {
2961                         priv->tx_traffic =
2962                                 kzalloc(traffic_size, GFP_KERNEL);
2963                         if (!priv->tx_traffic)
2964                                 return -ENOMEM;
2965                 }
2966         }
2967         if (iwl_debug_level & IWL_DL_RX) {
2968                 if (!priv->rx_traffic) {
2969                         priv->rx_traffic =
2970                                 kzalloc(traffic_size, GFP_KERNEL);
2971                         if (!priv->rx_traffic)
2972                                 return -ENOMEM;
2973                 }
2974         }
2975         iwl_reset_traffic_log(priv);
2976         return 0;
2977 }
2978 EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2979
2980 void iwl_free_traffic_mem(struct iwl_priv *priv)
2981 {
2982         kfree(priv->tx_traffic);
2983         priv->tx_traffic = NULL;
2984
2985         kfree(priv->rx_traffic);
2986         priv->rx_traffic = NULL;
2987 }
2988 EXPORT_SYMBOL(iwl_free_traffic_mem);
2989
2990 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
2991                       u16 length, struct ieee80211_hdr *header)
2992 {
2993         __le16 fc;
2994         u16 len;
2995
2996         if (likely(!(iwl_debug_level & IWL_DL_TX)))
2997                 return;
2998
2999         if (!priv->tx_traffic)
3000                 return;
3001
3002         fc = header->frame_control;
3003         if (ieee80211_is_data(fc)) {
3004                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
3005                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
3006                 memcpy((priv->tx_traffic +
3007                        (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
3008                        header, len);
3009                 priv->tx_traffic_idx =
3010                         (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
3011         }
3012 }
3013 EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
3014
3015 void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
3016                       u16 length, struct ieee80211_hdr *header)
3017 {
3018         __le16 fc;
3019         u16 len;
3020
3021         if (likely(!(iwl_debug_level & IWL_DL_RX)))
3022                 return;
3023
3024         if (!priv->rx_traffic)
3025                 return;
3026
3027         fc = header->frame_control;
3028         if (ieee80211_is_data(fc)) {
3029                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
3030                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
3031                 memcpy((priv->rx_traffic +
3032                        (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
3033                        header, len);
3034                 priv->rx_traffic_idx =
3035                         (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
3036         }
3037 }
3038 EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
3039
3040 const char *get_mgmt_string(int cmd)
3041 {
3042         switch (cmd) {
3043                 IWL_CMD(MANAGEMENT_ASSOC_REQ);
3044                 IWL_CMD(MANAGEMENT_ASSOC_RESP);
3045                 IWL_CMD(MANAGEMENT_REASSOC_REQ);
3046                 IWL_CMD(MANAGEMENT_REASSOC_RESP);
3047                 IWL_CMD(MANAGEMENT_PROBE_REQ);
3048                 IWL_CMD(MANAGEMENT_PROBE_RESP);
3049                 IWL_CMD(MANAGEMENT_BEACON);
3050                 IWL_CMD(MANAGEMENT_ATIM);
3051                 IWL_CMD(MANAGEMENT_DISASSOC);
3052                 IWL_CMD(MANAGEMENT_AUTH);
3053                 IWL_CMD(MANAGEMENT_DEAUTH);
3054                 IWL_CMD(MANAGEMENT_ACTION);
3055         default:
3056                 return "UNKNOWN";
3057
3058         }
3059 }
3060
3061 const char *get_ctrl_string(int cmd)
3062 {
3063         switch (cmd) {
3064                 IWL_CMD(CONTROL_BACK_REQ);
3065                 IWL_CMD(CONTROL_BACK);
3066                 IWL_CMD(CONTROL_PSPOLL);
3067                 IWL_CMD(CONTROL_RTS);
3068                 IWL_CMD(CONTROL_CTS);
3069                 IWL_CMD(CONTROL_ACK);
3070                 IWL_CMD(CONTROL_CFEND);
3071                 IWL_CMD(CONTROL_CFENDACK);
3072         default:
3073                 return "UNKNOWN";
3074
3075         }
3076 }
3077
3078 void iwl_clear_tx_stats(struct iwl_priv *priv)
3079 {
3080         memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
3081
3082 }
3083
3084 void iwl_clear_rx_stats(struct iwl_priv *priv)
3085 {
3086         memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
3087 }
3088
3089 /*
3090  * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
3091  * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
3092  * Use debugFs to display the rx/rx_statistics
3093  * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
3094  * information will be recorded, but DATA pkt still will be recorded
3095  * for the reason of iwl_led.c need to control the led blinking based on
3096  * number of tx and rx data.
3097  *
3098  */
3099 void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
3100 {
3101         struct traffic_stats    *stats;
3102
3103         if (is_tx)
3104                 stats = &priv->tx_stats;
3105         else
3106                 stats = &priv->rx_stats;
3107
3108         if (ieee80211_is_mgmt(fc)) {
3109                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
3110                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
3111                         stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
3112                         break;
3113                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
3114                         stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
3115                         break;
3116                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
3117                         stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
3118                         break;
3119                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
3120                         stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
3121                         break;
3122                 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
3123                         stats->mgmt[MANAGEMENT_PROBE_REQ]++;
3124                         break;
3125                 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
3126                         stats->mgmt[MANAGEMENT_PROBE_RESP]++;
3127                         break;
3128                 case cpu_to_le16(IEEE80211_STYPE_BEACON):
3129                         stats->mgmt[MANAGEMENT_BEACON]++;
3130                         break;
3131                 case cpu_to_le16(IEEE80211_STYPE_ATIM):
3132                         stats->mgmt[MANAGEMENT_ATIM]++;
3133                         break;
3134                 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
3135                         stats->mgmt[MANAGEMENT_DISASSOC]++;
3136                         break;
3137                 case cpu_to_le16(IEEE80211_STYPE_AUTH):
3138                         stats->mgmt[MANAGEMENT_AUTH]++;
3139                         break;
3140                 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
3141                         stats->mgmt[MANAGEMENT_DEAUTH]++;
3142                         break;
3143                 case cpu_to_le16(IEEE80211_STYPE_ACTION):
3144                         stats->mgmt[MANAGEMENT_ACTION]++;
3145                         break;
3146                 }
3147         } else if (ieee80211_is_ctl(fc)) {
3148                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
3149                 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
3150                         stats->ctrl[CONTROL_BACK_REQ]++;
3151                         break;
3152                 case cpu_to_le16(IEEE80211_STYPE_BACK):
3153                         stats->ctrl[CONTROL_BACK]++;
3154                         break;
3155                 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
3156                         stats->ctrl[CONTROL_PSPOLL]++;
3157                         break;
3158                 case cpu_to_le16(IEEE80211_STYPE_RTS):
3159                         stats->ctrl[CONTROL_RTS]++;
3160                         break;
3161                 case cpu_to_le16(IEEE80211_STYPE_CTS):
3162                         stats->ctrl[CONTROL_CTS]++;
3163                         break;
3164                 case cpu_to_le16(IEEE80211_STYPE_ACK):
3165                         stats->ctrl[CONTROL_ACK]++;
3166                         break;
3167                 case cpu_to_le16(IEEE80211_STYPE_CFEND):
3168                         stats->ctrl[CONTROL_CFEND]++;
3169                         break;
3170                 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
3171                         stats->ctrl[CONTROL_CFENDACK]++;
3172                         break;
3173                 }
3174         } else {
3175                 /* data */
3176                 stats->data_cnt++;
3177                 stats->data_bytes += len;
3178         }
3179 }
3180 EXPORT_SYMBOL(iwl_update_stats);
3181 #endif
3182
3183 #ifdef CONFIG_PM
3184
3185 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3186 {
3187         struct iwl_priv *priv = pci_get_drvdata(pdev);
3188
3189         /*
3190          * This function is called when system goes into suspend state
3191          * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
3192          * first but since iwl_mac_stop() has no knowledge of who the caller is,
3193          * it will not call apm_ops.stop() to stop the DMA operation.
3194          * Calling apm_ops.stop here to make sure we stop the DMA.
3195          */
3196         priv->cfg->ops->lib->apm_ops.stop(priv);
3197
3198         pci_save_state(pdev);
3199         pci_disable_device(pdev);
3200         pci_set_power_state(pdev, PCI_D3hot);
3201
3202         return 0;
3203 }
3204 EXPORT_SYMBOL(iwl_pci_suspend);
3205
3206 int iwl_pci_resume(struct pci_dev *pdev)
3207 {
3208         struct iwl_priv *priv = pci_get_drvdata(pdev);
3209         int ret;
3210
3211         pci_set_power_state(pdev, PCI_D0);
3212         ret = pci_enable_device(pdev);
3213         if (ret)
3214                 return ret;
3215         pci_restore_state(pdev);
3216         iwl_enable_interrupts(priv);
3217
3218         return 0;
3219 }
3220 EXPORT_SYMBOL(iwl_pci_resume);
3221
3222 #endif /* CONFIG_PM */