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 <linux/sched.h>
  33 #include <net/mac80211.h>
  34
  35 #include "iwl-eeprom.h"
  36 #include "iwl-dev.h" /* FIXME: remove */
  37 #include "iwl-debug.h"
  38 #include "iwl-core.h"
  39 #include "iwl-io.h"
  40 #include "iwl-power.h"
  41 #include "iwl-sta.h"
  42 #include "iwl-helpers.h"
  43
  44
  45 MODULE_DESCRIPTION("iwl core");
  46 MODULE_VERSION(IWLWIFI_VERSION);
  47 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  48 MODULE_LICENSE("GPL");
  49
  50 static struct iwl_wimax_coex_event_entry cu_priorities[COEX_NUM_OF_EVENTS] = {
  51         {COEX_CU_UNASSOC_IDLE_RP, COEX_CU_UNASSOC_IDLE_WP,
  52          0, COEX_UNASSOC_IDLE_FLAGS},
  53         {COEX_CU_UNASSOC_MANUAL_SCAN_RP, COEX_CU_UNASSOC_MANUAL_SCAN_WP,
  54          0, COEX_UNASSOC_MANUAL_SCAN_FLAGS},
  55         {COEX_CU_UNASSOC_AUTO_SCAN_RP, COEX_CU_UNASSOC_AUTO_SCAN_WP,
  56          0, COEX_UNASSOC_AUTO_SCAN_FLAGS},
  57         {COEX_CU_CALIBRATION_RP, COEX_CU_CALIBRATION_WP,
  58          0, COEX_CALIBRATION_FLAGS},
  59         {COEX_CU_PERIODIC_CALIBRATION_RP, COEX_CU_PERIODIC_CALIBRATION_WP,
  60          0, COEX_PERIODIC_CALIBRATION_FLAGS},
  61         {COEX_CU_CONNECTION_ESTAB_RP, COEX_CU_CONNECTION_ESTAB_WP,
  62          0, COEX_CONNECTION_ESTAB_FLAGS},
  63         {COEX_CU_ASSOCIATED_IDLE_RP, COEX_CU_ASSOCIATED_IDLE_WP,
  64          0, COEX_ASSOCIATED_IDLE_FLAGS},
  65         {COEX_CU_ASSOC_MANUAL_SCAN_RP, COEX_CU_ASSOC_MANUAL_SCAN_WP,
  66          0, COEX_ASSOC_MANUAL_SCAN_FLAGS},
  67         {COEX_CU_ASSOC_AUTO_SCAN_RP, COEX_CU_ASSOC_AUTO_SCAN_WP,
  68          0, COEX_ASSOC_AUTO_SCAN_FLAGS},
  69         {COEX_CU_ASSOC_ACTIVE_LEVEL_RP, COEX_CU_ASSOC_ACTIVE_LEVEL_WP,
  70          0, COEX_ASSOC_ACTIVE_LEVEL_FLAGS},
  71         {COEX_CU_RF_ON_RP, COEX_CU_RF_ON_WP, 0, COEX_CU_RF_ON_FLAGS},
  72         {COEX_CU_RF_OFF_RP, COEX_CU_RF_OFF_WP, 0, COEX_RF_OFF_FLAGS},
  73         {COEX_CU_STAND_ALONE_DEBUG_RP, COEX_CU_STAND_ALONE_DEBUG_WP,
  74          0, COEX_STAND_ALONE_DEBUG_FLAGS},
  75         {COEX_CU_IPAN_ASSOC_LEVEL_RP, COEX_CU_IPAN_ASSOC_LEVEL_WP,
  76          0, COEX_IPAN_ASSOC_LEVEL_FLAGS},
  77         {COEX_CU_RSRVD1_RP, COEX_CU_RSRVD1_WP, 0, COEX_RSRVD1_FLAGS},
  78         {COEX_CU_RSRVD2_RP, COEX_CU_RSRVD2_WP, 0, COEX_RSRVD2_FLAGS}
  79 };
  80
  81 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np)    \
  82         [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,      \
  83                                     IWL_RATE_SISO_##s##M_PLCP, \
  84                                     IWL_RATE_MIMO2_##s##M_PLCP,\
  85                                     IWL_RATE_MIMO3_##s##M_PLCP,\
  86                                     IWL_RATE_##r##M_IEEE,      \
  87                                     IWL_RATE_##ip##M_INDEX,    \
  88                                     IWL_RATE_##in##M_INDEX,    \
  89                                     IWL_RATE_##rp##M_INDEX,    \
  90                                     IWL_RATE_##rn##M_INDEX,    \
  91                                     IWL_RATE_##pp##M_INDEX,    \
  92                                     IWL_RATE_##np##M_INDEX }
  93
  94 u32 iwl_debug_level;
  95 EXPORT_SYMBOL(iwl_debug_level);
  96
  97 static irqreturn_t iwl_isr(int irq, void *data);
  98
  99 /*
 100  * Parameter order:
 101  *   rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
 102  *
 103  * If there isn't a valid next or previous rate then INV is used which
 104  * maps to IWL_RATE_INVALID
 105  *
 106  */
 107 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
 108         IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2),    /*  1mbps */
 109         IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5),          /*  2mbps */
 110         IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
 111         IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18),      /* 11mbps */
 112         IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
 113         IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11),       /*  9mbps */
 114         IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
 115         IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
 116         IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
 117         IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
 118         IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
 119         IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
 120         IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
 121         /* FIXME:RS:          ^^    should be INV (legacy) */
 122 };
 123 EXPORT_SYMBOL(iwl_rates);
 124
 125 /**
 126  * translate ucode response to mac80211 tx status control values
 127  */
 128 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
 129                                   struct ieee80211_tx_info *info)
 130 {
 131         struct ieee80211_tx_rate *r = &info->control.rates[0];
 132
 133         info->antenna_sel_tx =
 134                 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
 135         if (rate_n_flags & RATE_MCS_HT_MSK)
 136                 r->flags |= IEEE80211_TX_RC_MCS;
 137         if (rate_n_flags & RATE_MCS_GF_MSK)
 138                 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
 139         if (rate_n_flags & RATE_MCS_HT40_MSK)
 140                 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
 141         if (rate_n_flags & RATE_MCS_DUP_MSK)
 142                 r->flags |= IEEE80211_TX_RC_DUP_DATA;
 143         if (rate_n_flags & RATE_MCS_SGI_MSK)
 144                 r->flags |= IEEE80211_TX_RC_SHORT_GI;
 145         r->idx = iwl_hwrate_to_mac80211_idx(rate_n_flags, info->band);
 146 }
 147 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
 148
 149 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
 150 {
 151         int idx = 0;
 152
 153         /* HT rate format */
 154         if (rate_n_flags & RATE_MCS_HT_MSK) {
 155                 idx = (rate_n_flags & 0xff);
 156
 157                 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
 158                         idx = idx - IWL_RATE_MIMO3_6M_PLCP;
 159                 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
 160                         idx = idx - IWL_RATE_MIMO2_6M_PLCP;
 161
 162                 idx += IWL_FIRST_OFDM_RATE;
 163                 /* skip 9M not supported in ht*/
 164                 if (idx >= IWL_RATE_9M_INDEX)
 165                         idx += 1;
 166                 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
 167                         return idx;
 168
 169         /* legacy rate format, search for match in table */
 170         } else {
 171                 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
 172                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 173                                 return idx;
 174         }
 175
 176         return -1;
 177 }
 178 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
 179
 180 int iwl_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
 181 {
 182         int idx = 0;
 183         int band_offset = 0;
 184
 185         /* HT rate format: mac80211 wants an MCS number, which is just LSB */
 186         if (rate_n_flags & RATE_MCS_HT_MSK) {
 187                 idx = (rate_n_flags & 0xff);
 188                 return idx;
 189         /* Legacy rate format, search for match in table */
 190         } else {
 191                 if (band == IEEE80211_BAND_5GHZ)
 192                         band_offset = IWL_FIRST_OFDM_RATE;
 193                 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
 194                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 195                                 return idx - band_offset;
 196         }
 197
 198         return -1;
 199 }
 200
 201 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
 202 {
 203         int i;
 204         u8 ind = ant;
 205         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 206                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 207                 if (priv->hw_params.valid_tx_ant & BIT(ind))
 208                         return ind;
 209         }
 210         return ant;
 211 }
 212 EXPORT_SYMBOL(iwl_toggle_tx_ant);
 213
 214 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 215 EXPORT_SYMBOL(iwl_bcast_addr);
 216
 217
 218 /* This function both allocates and initializes hw and priv. */
 219 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
 220                 struct ieee80211_ops *hw_ops)
 221 {
 222         struct iwl_priv *priv;
 223
 224         /* mac80211 allocates memory for this device instance, including
 225          *   space for this driver's private structure */
 226         struct ieee80211_hw *hw =
 227                 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
 228         if (hw == NULL) {
 229                 printk(KERN_ERR "%s: Can not allocate network device\n",
 230                        cfg->name);
 231                 goto out;
 232         }
 233
 234         priv = hw->priv;
 235         priv->hw = hw;
 236
 237 out:
 238         return hw;
 239 }
 240 EXPORT_SYMBOL(iwl_alloc_all);
 241
 242 void iwl_hw_detect(struct iwl_priv *priv)
 243 {
 244         priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
 245         priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
 246         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
 247 }
 248 EXPORT_SYMBOL(iwl_hw_detect);
 249
 250 int iwl_hw_nic_init(struct iwl_priv *priv)
 251 {
 252         unsigned long flags;
 253         struct iwl_rx_queue *rxq = &priv->rxq;
 254         int ret;
 255
 256         /* nic_init */
 257         spin_lock_irqsave(&priv->lock, flags);
 258         priv->cfg->ops->lib->apm_ops.init(priv);
 259
 260         /* Set interrupt coalescing timer to 512 usecs */
 261         iwl_write8(priv, CSR_INT_COALESCING, 512 / 32);
 262
 263         spin_unlock_irqrestore(&priv->lock, flags);
 264
 265         ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
 266
 267         priv->cfg->ops->lib->apm_ops.config(priv);
 268
 269         /* Allocate the RX queue, or reset if it is already allocated */
 270         if (!rxq->bd) {
 271                 ret = iwl_rx_queue_alloc(priv);
 272                 if (ret) {
 273                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
 274                         return -ENOMEM;
 275                 }
 276         } else
 277                 iwl_rx_queue_reset(priv, rxq);
 278
 279         iwl_rx_replenish(priv);
 280
 281         iwl_rx_init(priv, rxq);
 282
 283         spin_lock_irqsave(&priv->lock, flags);
 284
 285         rxq->need_update = 1;
 286         iwl_rx_queue_update_write_ptr(priv, rxq);
 287
 288         spin_unlock_irqrestore(&priv->lock, flags);
 289
 290         /* Allocate and init all Tx and Command queues */
 291         ret = iwl_txq_ctx_reset(priv);
 292         if (ret)
 293                 return ret;
 294
 295         set_bit(STATUS_INIT, &priv->status);
 296
 297         return 0;
 298 }
 299 EXPORT_SYMBOL(iwl_hw_nic_init);
 300
 301 /*
 302  * QoS  support
 303 */
 304 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 305 {
 306         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 307                 return;
 308
 309         priv->qos_data.def_qos_parm.qos_flags = 0;
 310
 311         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 312             !priv->qos_data.qos_cap.q_AP.txop_request)
 313                 priv->qos_data.def_qos_parm.qos_flags |=
 314                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 315         if (priv->qos_data.qos_active)
 316                 priv->qos_data.def_qos_parm.qos_flags |=
 317                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 318
 319         if (priv->current_ht_config.is_ht)
 320                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 321
 322         if (force || iwl_is_associated(priv)) {
 323                 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 324                                 priv->qos_data.qos_active,
 325                                 priv->qos_data.def_qos_parm.qos_flags);
 326
 327                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 328                                        sizeof(struct iwl_qosparam_cmd),
 329                                        &priv->qos_data.def_qos_parm, NULL);
 330         }
 331 }
 332 EXPORT_SYMBOL(iwl_activate_qos);
 333
 334 /*
 335  * AC        CWmin         CW max      AIFSN      TXOP Limit    TXOP Limit
 336  *                                              (802.11b)      (802.11a/g)
 337  * AC_BK      15            1023        7           0               0
 338  * AC_BE      15            1023        3           0               0
 339  * AC_VI       7              15        2          6.016ms       3.008ms
 340  * AC_VO       3               7        2          3.264ms       1.504ms
 341  */
 342 void iwl_reset_qos(struct iwl_priv *priv)
 343 {
 344         u16 cw_min = 15;
 345         u16 cw_max = 1023;
 346         u8 aifs = 2;
 347         bool is_legacy = false;
 348         unsigned long flags;
 349         int i;
 350
 351         spin_lock_irqsave(&priv->lock, flags);
 352         /* QoS always active in AP and ADHOC mode
 353          * In STA mode wait for association
 354          */
 355         if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
 356             priv->iw_mode == NL80211_IFTYPE_AP)
 357                 priv->qos_data.qos_active = 1;
 358         else
 359                 priv->qos_data.qos_active = 0;
 360
 361         /* check for legacy mode */
 362         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
 363             (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
 364             (priv->iw_mode == NL80211_IFTYPE_STATION &&
 365             (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
 366                 cw_min = 31;
 367                 is_legacy = 1;
 368         }
 369
 370         if (priv->qos_data.qos_active)
 371                 aifs = 3;
 372
 373         /* AC_BE */
 374         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
 375         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
 376         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
 377         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
 378         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
 379
 380         if (priv->qos_data.qos_active) {
 381                 /* AC_BK */
 382                 i = 1;
 383                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
 384                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
 385                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
 386                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
 387                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 388
 389                 /* AC_VI */
 390                 i = 2;
 391                 priv->qos_data.def_qos_parm.ac[i].cw_min =
 392                         cpu_to_le16((cw_min + 1) / 2 - 1);
 393                 priv->qos_data.def_qos_parm.ac[i].cw_max =
 394                         cpu_to_le16(cw_min);
 395                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
 396                 if (is_legacy)
 397                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 398                                 cpu_to_le16(6016);
 399                 else
 400                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 401                                 cpu_to_le16(3008);
 402                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 403
 404                 /* AC_VO */
 405                 i = 3;
 406                 priv->qos_data.def_qos_parm.ac[i].cw_min =
 407                         cpu_to_le16((cw_min + 1) / 4 - 1);
 408                 priv->qos_data.def_qos_parm.ac[i].cw_max =
 409                         cpu_to_le16((cw_min + 1) / 2 - 1);
 410                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
 411                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 412                 if (is_legacy)
 413                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 414                                 cpu_to_le16(3264);
 415                 else
 416                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 417                                 cpu_to_le16(1504);
 418         } else {
 419                 for (i = 1; i < 4; i++) {
 420                         priv->qos_data.def_qos_parm.ac[i].cw_min =
 421                                 cpu_to_le16(cw_min);
 422                         priv->qos_data.def_qos_parm.ac[i].cw_max =
 423                                 cpu_to_le16(cw_max);
 424                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
 425                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
 426                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 427                 }
 428         }
 429         IWL_DEBUG_QOS(priv, "set QoS to default \n");
 430
 431         spin_unlock_irqrestore(&priv->lock, flags);
 432 }
 433 EXPORT_SYMBOL(iwl_reset_qos);
 434
 435 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
 436 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
 437 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
 438                               struct ieee80211_sta_ht_cap *ht_info,
 439                               enum ieee80211_band band)
 440 {
 441         u16 max_bit_rate = 0;
 442         u8 rx_chains_num = priv->hw_params.rx_chains_num;
 443         u8 tx_chains_num = priv->hw_params.tx_chains_num;
 444
 445         ht_info->cap = 0;
 446         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
 447
 448         ht_info->ht_supported = true;
 449
 450         if (priv->cfg->ht_greenfield_support)
 451                 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
 452         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
 453         ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
 454                              (priv->cfg->sm_ps_mode << 2));
 455         max_bit_rate = MAX_BIT_RATE_20_MHZ;
 456         if (priv->hw_params.ht40_channel & BIT(band)) {
 457                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 458                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
 459                 ht_info->mcs.rx_mask[4] = 0x01;
 460                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
 461         }
 462
 463         if (priv->cfg->mod_params->amsdu_size_8K)
 464                 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
 465
 466         ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
 467         ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
 468
 469         ht_info->mcs.rx_mask[0] = 0xFF;
 470         if (rx_chains_num >= 2)
 471                 ht_info->mcs.rx_mask[1] = 0xFF;
 472         if (rx_chains_num >= 3)
 473                 ht_info->mcs.rx_mask[2] = 0xFF;
 474
 475         /* Highest supported Rx data rate */
 476         max_bit_rate *= rx_chains_num;
 477         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
 478         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
 479
 480         /* Tx MCS capabilities */
 481         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 482         if (tx_chains_num != rx_chains_num) {
 483                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
 484                 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
 485                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
 486         }
 487 }
 488
 489 /**
 490  * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
 491  */
 492 int iwlcore_init_geos(struct iwl_priv *priv)
 493 {
 494         struct iwl_channel_info *ch;
 495         struct ieee80211_supported_band *sband;
 496         struct ieee80211_channel *channels;
 497         struct ieee80211_channel *geo_ch;
 498         struct ieee80211_rate *rates;
 499         int i = 0;
 500
 501         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
 502             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
 503                 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
 504                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
 505                 return 0;
 506         }
 507
 508         channels = kzalloc(sizeof(struct ieee80211_channel) *
 509                            priv->channel_count, GFP_KERNEL);
 510         if (!channels)
 511                 return -ENOMEM;
 512
 513         rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
 514                         GFP_KERNEL);
 515         if (!rates) {
 516                 kfree(channels);
 517                 return -ENOMEM;
 518         }
 519
 520         /* 5.2GHz channels start after the 2.4GHz channels */
 521         sband = &priv->bands[IEEE80211_BAND_5GHZ];
 522         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
 523         /* just OFDM */
 524         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
 525         sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
 526
 527         if (priv->cfg->sku & IWL_SKU_N)
 528                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
 529                                          IEEE80211_BAND_5GHZ);
 530
 531         sband = &priv->bands[IEEE80211_BAND_2GHZ];
 532         sband->channels = channels;
 533         /* OFDM & CCK */
 534         sband->bitrates = rates;
 535         sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
 536
 537         if (priv->cfg->sku & IWL_SKU_N)
 538                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
 539                                          IEEE80211_BAND_2GHZ);
 540
 541         priv->ieee_channels = channels;
 542         priv->ieee_rates = rates;
 543
 544         for (i = 0;  i < priv->channel_count; i++) {
 545                 ch = &priv->channel_info[i];
 546
 547                 /* FIXME: might be removed if scan is OK */
 548                 if (!is_channel_valid(ch))
 549                         continue;
 550
 551                 if (is_channel_a_band(ch))
 552                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
 553                 else
 554                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
 555
 556                 geo_ch = &sband->channels[sband->n_channels++];
 557
 558                 geo_ch->center_freq =
 559                                 ieee80211_channel_to_frequency(ch->channel);
 560                 geo_ch->max_power = ch->max_power_avg;
 561                 geo_ch->max_antenna_gain = 0xff;
 562                 geo_ch->hw_value = ch->channel;
 563
 564                 if (is_channel_valid(ch)) {
 565                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
 566                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
 567
 568                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
 569                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
 570
 571                         if (ch->flags & EEPROM_CHANNEL_RADAR)
 572                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
 573
 574                         geo_ch->flags |= ch->ht40_extension_channel;
 575
 576                         if (ch->max_power_avg > priv->tx_power_device_lmt)
 577                                 priv->tx_power_device_lmt = ch->max_power_avg;
 578                 } else {
 579                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
 580                 }
 581
 582                 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
 583                                 ch->channel, geo_ch->center_freq,
 584                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
 585                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
 586                                 "restricted" : "valid",
 587                                  geo_ch->flags);
 588         }
 589
 590         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
 591              priv->cfg->sku & IWL_SKU_A) {
 592                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
 593                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
 594                            priv->pci_dev->device,
 595                            priv->pci_dev->subsystem_device);
 596                 priv->cfg->sku &= ~IWL_SKU_A;
 597         }
 598
 599         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
 600                    priv->bands[IEEE80211_BAND_2GHZ].n_channels,
 601                    priv->bands[IEEE80211_BAND_5GHZ].n_channels);
 602
 603         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
 604
 605         return 0;
 606 }
 607 EXPORT_SYMBOL(iwlcore_init_geos);
 608
 609 /*
 610  * iwlcore_free_geos - undo allocations in iwlcore_init_geos
 611  */
 612 void iwlcore_free_geos(struct iwl_priv *priv)
 613 {
 614         kfree(priv->ieee_channels);
 615         kfree(priv->ieee_rates);
 616         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
 617 }
 618 EXPORT_SYMBOL(iwlcore_free_geos);
 619
 620 /*
 621  *  iwlcore_rts_tx_cmd_flag: Set rts/cts. 3945 and 4965 only share this
 622  *  function.
 623  */
 624 void iwlcore_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
 625                                 __le32 *tx_flags)
 626 {
 627         if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
 628                 *tx_flags |= TX_CMD_FLG_RTS_MSK;
 629                 *tx_flags &= ~TX_CMD_FLG_CTS_MSK;
 630         } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 631                 *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
 632                 *tx_flags |= TX_CMD_FLG_CTS_MSK;
 633         }
 634 }
 635 EXPORT_SYMBOL(iwlcore_rts_tx_cmd_flag);
 636
 637 static bool is_single_rx_stream(struct iwl_priv *priv)
 638 {
 639         return !priv->current_ht_config.is_ht ||
 640                priv->current_ht_config.single_chain_sufficient;
 641 }
 642
 643 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
 644                                    enum ieee80211_band band,
 645                                    u16 channel, u8 extension_chan_offset)
 646 {
 647         const struct iwl_channel_info *ch_info;
 648
 649         ch_info = iwl_get_channel_info(priv, band, channel);
 650         if (!is_channel_valid(ch_info))
 651                 return 0;
 652
 653         if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
 654                 return !(ch_info->ht40_extension_channel &
 655                                         IEEE80211_CHAN_NO_HT40PLUS);
 656         else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
 657                 return !(ch_info->ht40_extension_channel &
 658                                         IEEE80211_CHAN_NO_HT40MINUS);
 659
 660         return 0;
 661 }
 662
 663 u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
 664                          struct ieee80211_sta_ht_cap *sta_ht_inf)
 665 {
 666         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
 667
 668         if (!ht_conf->is_ht || !ht_conf->is_40mhz)
 669                 return 0;
 670
 671         /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
 672          * the bit will not set if it is pure 40MHz case
 673          */
 674         if (sta_ht_inf) {
 675                 if (!sta_ht_inf->ht_supported)
 676                         return 0;
 677         }
 678 #ifdef CONFIG_IWLWIFI_DEBUG
 679         if (priv->disable_ht40)
 680                 return 0;
 681 #endif
 682         return iwl_is_channel_extension(priv, priv->band,
 683                         le16_to_cpu(priv->staging_rxon.channel),
 684                         ht_conf->extension_chan_offset);
 685 }
 686 EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
 687
 688 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
 689 {
 690         u16 new_val = 0;
 691         u16 beacon_factor = 0;
 692
 693         beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
 694         new_val = beacon_val / beacon_factor;
 695
 696         if (!new_val)
 697                 new_val = max_beacon_val;
 698
 699         return new_val;
 700 }
 701
 702 void iwl_setup_rxon_timing(struct iwl_priv *priv)
 703 {
 704         u64 tsf;
 705         s32 interval_tm, rem;
 706         unsigned long flags;
 707         struct ieee80211_conf *conf = NULL;
 708         u16 beacon_int;
 709
 710         conf = ieee80211_get_hw_conf(priv->hw);
 711
 712         spin_lock_irqsave(&priv->lock, flags);
 713         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 714         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 715
 716         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 717                 beacon_int = priv->beacon_int;
 718                 priv->rxon_timing.atim_window = 0;
 719         } else {
 720                 beacon_int = priv->vif->bss_conf.beacon_int;
 721
 722                 /* TODO: we need to get atim_window from upper stack
 723                  * for now we set to 0 */
 724                 priv->rxon_timing.atim_window = 0;
 725         }
 726
 727         beacon_int = iwl_adjust_beacon_interval(beacon_int,
 728                                 priv->hw_params.max_beacon_itrvl * 1024);
 729         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 730
 731         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 732         interval_tm = beacon_int * 1024;
 733         rem = do_div(tsf, interval_tm);
 734         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 735
 736         spin_unlock_irqrestore(&priv->lock, flags);
 737         IWL_DEBUG_ASSOC(priv,
 738                         "beacon interval %d beacon timer %d beacon tim %d\n",
 739                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 740                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 741                         le16_to_cpu(priv->rxon_timing.atim_window));
 742 }
 743 EXPORT_SYMBOL(iwl_setup_rxon_timing);
 744
 745 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 746 {
 747         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 748
 749         if (hw_decrypt)
 750                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 751         else
 752                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 753
 754 }
 755 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
 756
 757 /**
 758  * iwl_check_rxon_cmd - validate RXON structure is valid
 759  *
 760  * NOTE:  This is really only useful during development and can eventually
 761  * be #ifdef'd out once the driver is stable and folks aren't actively
 762  * making changes
 763  */
 764 int iwl_check_rxon_cmd(struct iwl_priv *priv)
 765 {
 766         int error = 0;
 767         int counter = 1;
 768         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 769
 770         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 771                 error |= le32_to_cpu(rxon->flags &
 772                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 773                                  RXON_FLG_RADAR_DETECT_MSK));
 774                 if (error)
 775                         IWL_WARN(priv, "check 24G fields %d | %d\n",
 776                                     counter++, error);
 777         } else {
 778                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 779                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 780                 if (error)
 781                         IWL_WARN(priv, "check 52 fields %d | %d\n",
 782                                     counter++, error);
 783                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 784                 if (error)
 785                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
 786                                     counter++, error);
 787         }
 788         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 789         if (error)
 790                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
 791
 792         /* make sure basic rates 6Mbps and 1Mbps are supported */
 793         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 794                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 795         if (error)
 796                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
 797
 798         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 799         if (error)
 800                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
 801
 802         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 803                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 804         if (error)
 805                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
 806                             counter++, error);
 807
 808         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 809                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 810         if (error)
 811                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
 812                             counter++, error);
 813
 814         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 815                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 816         if (error)
 817                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
 818                             counter++, error);
 819
 820         if (error)
 821                 IWL_WARN(priv, "Tuning to channel %d\n",
 822                             le16_to_cpu(rxon->channel));
 823
 824         if (error) {
 825                 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
 826                 return -1;
 827         }
 828         return 0;
 829 }
 830 EXPORT_SYMBOL(iwl_check_rxon_cmd);
 831
 832 /**
 833  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 834  * @priv: staging_rxon is compared to active_rxon
 835  *
 836  * If the RXON structure is changing enough to require a new tune,
 837  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 838  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 839  */
 840 int iwl_full_rxon_required(struct iwl_priv *priv)
 841 {
 842
 843         /* These items are only settable from the full RXON command */
 844         if (!(iwl_is_associated(priv)) ||
 845             compare_ether_addr(priv->staging_rxon.bssid_addr,
 846                                priv->active_rxon.bssid_addr) ||
 847             compare_ether_addr(priv->staging_rxon.node_addr,
 848                                priv->active_rxon.node_addr) ||
 849             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 850                                priv->active_rxon.wlap_bssid_addr) ||
 851             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 852             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 853             (priv->staging_rxon.air_propagation !=
 854              priv->active_rxon.air_propagation) ||
 855             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 856              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 857             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 858              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 859             (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
 860              priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
 861             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 862                 return 1;
 863
 864         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 865          * be updated with the RXON_ASSOC command -- however only some
 866          * flag transitions are allowed using RXON_ASSOC */
 867
 868         /* Check if we are not switching bands */
 869         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 870             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 871                 return 1;
 872
 873         /* Check if we are switching association toggle */
 874         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 875                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 876                 return 1;
 877
 878         return 0;
 879 }
 880 EXPORT_SYMBOL(iwl_full_rxon_required);
 881
 882 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 883 {
 884         int i;
 885         int rate_mask;
 886
 887         /* Set rate mask*/
 888         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 889                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 890         else
 891                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 892
 893         /* Find lowest valid rate */
 894         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 895                                         i = iwl_rates[i].next_ieee) {
 896                 if (rate_mask & (1 << i))
 897                         return iwl_rates[i].plcp;
 898         }
 899
 900         /* No valid rate was found. Assign the lowest one */
 901         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 902                 return IWL_RATE_1M_PLCP;
 903         else
 904                 return IWL_RATE_6M_PLCP;
 905 }
 906 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
 907
 908 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
 909 {
 910         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 911
 912         if (!ht_conf->is_ht) {
 913                 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
 914                         RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
 915                         RXON_FLG_HT40_PROT_MSK |
 916                         RXON_FLG_HT_PROT_MSK);
 917                 return;
 918         }
 919
 920         /* FIXME: if the definition of ht_protection changed, the "translation"
 921          * will be needed for rxon->flags
 922          */
 923         rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
 924
 925         /* Set up channel bandwidth:
 926          * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
 927         /* clear the HT channel mode before set the mode */
 928         rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
 929                          RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
 930         if (iwl_is_ht40_tx_allowed(priv, NULL)) {
 931                 /* pure ht40 */
 932                 if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
 933                         rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
 934                         /* Note: control channel is opposite of extension channel */
 935                         switch (ht_conf->extension_chan_offset) {
 936                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 937                                 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 938                                 break;
 939                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 940                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 941                                 break;
 942                         }
 943                 } else {
 944                         /* Note: control channel is opposite of extension channel */
 945                         switch (ht_conf->extension_chan_offset) {
 946                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 947                                 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
 948                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
 949                                 break;
 950                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 951                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 952                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
 953                                 break;
 954                         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
 955                         default:
 956                                 /* channel location only valid if in Mixed mode */
 957                                 IWL_ERR(priv, "invalid extension channel offset\n");
 958                                 break;
 959                         }
 960                 }
 961         } else {
 962                 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
 963         }
 964
 965         if (priv->cfg->ops->hcmd->set_rxon_chain)
 966                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
 967
 968         IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
 969                         "extension channel offset 0x%x\n",
 970                         le32_to_cpu(rxon->flags), ht_conf->ht_protection,
 971                         ht_conf->extension_chan_offset);
 972         return;
 973 }
 974 EXPORT_SYMBOL(iwl_set_rxon_ht);
 975
 976 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 977 #define IWL_NUM_RX_CHAINS_SINGLE        2
 978 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 979 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 980
 981 /*
 982  * Determine how many receiver/antenna chains to use.
 983  *
 984  * More provides better reception via diversity.  Fewer saves power
 985  * at the expense of throughput, but only when not in powersave to
 986  * start with.
 987  *
 988  * MIMO (dual stream) requires at least 2, but works better with 3.
 989  * This does not determine *which* chains to use, just how many.
 990  */
 991 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 992 {
 993         /* # of Rx chains to use when expecting MIMO. */
 994         if (is_single_rx_stream(priv))
 995                 return IWL_NUM_RX_CHAINS_SINGLE;
 996         else
 997                 return IWL_NUM_RX_CHAINS_MULTIPLE;
 998 }
 999
1000 /*
1001  * When we are in power saving mode, unless device support spatial
1002  * multiplexing power save, use the active count for rx chain count.
1003  */
1004 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
1005 {
1006         int idle_cnt = active_cnt;
1007         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1008
1009         /* # Rx chains when idling and maybe trying to save power */
1010         switch (priv->cfg->sm_ps_mode) {
1011         case WLAN_HT_CAP_SM_PS_STATIC:
1012                 idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
1013                 break;
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                 break;
1020         case WLAN_HT_CAP_SM_PS_INVALID:
1021         default:
1022                 IWL_ERR(priv, "invalid sm_ps mode %u\n",
1023                         priv->cfg->sm_ps_mode);
1024                 WARN_ON(1);
1025                 break;
1026         }
1027         return idle_cnt;
1028 }
1029
1030 /* up to 4 chains */
1031 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
1032 {
1033         u8 res;
1034         res = (chain_bitmap & BIT(0)) >> 0;
1035         res += (chain_bitmap & BIT(1)) >> 1;
1036         res += (chain_bitmap & BIT(2)) >> 2;
1037         res += (chain_bitmap & BIT(3)) >> 3;
1038         return res;
1039 }
1040
1041 /**
1042  * iwl_is_monitor_mode - Determine if interface in monitor mode
1043  *
1044  * priv->iw_mode is set in add_interface, but add_interface is
1045  * never called for monitor mode. The only way mac80211 informs us about
1046  * monitor mode is through configuring filters (call to configure_filter).
1047  */
1048 bool iwl_is_monitor_mode(struct iwl_priv *priv)
1049 {
1050         return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1051 }
1052 EXPORT_SYMBOL(iwl_is_monitor_mode);
1053
1054 /**
1055  * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1056  *
1057  * Selects how many and which Rx receivers/antennas/chains to use.
1058  * This should not be used for scan command ... it puts data in wrong place.
1059  */
1060 void iwl_set_rxon_chain(struct iwl_priv *priv)
1061 {
1062         bool is_single = is_single_rx_stream(priv);
1063         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1064         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1065         u32 active_chains;
1066         u16 rx_chain;
1067
1068         /* Tell uCode which antennas are actually connected.
1069          * Before first association, we assume all antennas are connected.
1070          * Just after first association, iwl_chain_noise_calibration()
1071          *    checks which antennas actually *are* connected. */
1072          if (priv->chain_noise_data.active_chains)
1073                 active_chains = priv->chain_noise_data.active_chains;
1074         else
1075                 active_chains = priv->hw_params.valid_rx_ant;
1076
1077         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1078
1079         /* How many receivers should we use? */
1080         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1081         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1082
1083
1084         /* correct rx chain count according hw settings
1085          * and chain noise calibration
1086          */
1087         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1088         if (valid_rx_cnt < active_rx_cnt)
1089                 active_rx_cnt = valid_rx_cnt;
1090
1091         if (valid_rx_cnt < idle_rx_cnt)
1092                 idle_rx_cnt = valid_rx_cnt;
1093
1094         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1095         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
1096
1097         /* copied from 'iwl_bg_request_scan()' */
1098         /* Force use of chains B and C (0x6) for Rx for 4965
1099          * Avoid A (0x1) because of its off-channel reception on A-band.
1100          * MIMO is not used here, but value is required */
1101         if (iwl_is_monitor_mode(priv) &&
1102             !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1103             ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1104                 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1105                 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1106                 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1107                 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1108         }
1109
1110         priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1111
1112         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1113                 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1114         else
1115                 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1116
1117         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1118                         priv->staging_rxon.rx_chain,
1119                         active_rx_cnt, idle_rx_cnt);
1120
1121         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1122                 active_rx_cnt < idle_rx_cnt);
1123 }
1124 EXPORT_SYMBOL(iwl_set_rxon_chain);
1125
1126 /**
1127  * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1128  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1129  * @channel: Any channel valid for the requested phymode
1130
1131  * In addition to setting the staging RXON, priv->phymode is also set.
1132  *
1133  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
1134  * in the staging RXON flag structure based on the phymode
1135  */
1136 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1137 {
1138         enum ieee80211_band band = ch->band;
1139         u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1140
1141         if (!iwl_get_channel_info(priv, band, channel)) {
1142                 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1143                                channel, band);
1144                 return -EINVAL;
1145         }
1146
1147         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1148             (priv->band == band))
1149                 return 0;
1150
1151         priv->staging_rxon.channel = cpu_to_le16(channel);
1152         if (band == IEEE80211_BAND_5GHZ)
1153                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1154         else
1155                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1156
1157         priv->band = band;
1158
1159         IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1160
1161         return 0;
1162 }
1163 EXPORT_SYMBOL(iwl_set_rxon_channel);
1164
1165 void iwl_set_flags_for_band(struct iwl_priv *priv,
1166                             enum ieee80211_band band)
1167 {
1168         if (band == IEEE80211_BAND_5GHZ) {
1169                 priv->staging_rxon.flags &=
1170                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1171                       | RXON_FLG_CCK_MSK);
1172                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1173         } else {
1174                 /* Copied from iwl_post_associate() */
1175                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1176                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1177                 else
1178                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1179
1180                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1181                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1182
1183                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1184                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1185                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1186         }
1187 }
1188
1189 /*
1190  * initialize rxon structure with default values from eeprom
1191  */
1192 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1193 {
1194         const struct iwl_channel_info *ch_info;
1195
1196         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1197
1198         switch (mode) {
1199         case NL80211_IFTYPE_AP:
1200                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1201                 break;
1202
1203         case NL80211_IFTYPE_STATION:
1204                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1205                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1206                 break;
1207
1208         case NL80211_IFTYPE_ADHOC:
1209                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1210                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1211                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1212                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1213                 break;
1214
1215         default:
1216                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1217                 break;
1218         }
1219
1220 #if 0
1221         /* TODO:  Figure out when short_preamble would be set and cache from
1222          * that */
1223         if (!hw_to_local(priv->hw)->short_preamble)
1224                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1225         else
1226                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1227 #endif
1228
1229         ch_info = iwl_get_channel_info(priv, priv->band,
1230                                        le16_to_cpu(priv->active_rxon.channel));
1231
1232         if (!ch_info)
1233                 ch_info = &priv->channel_info[0];
1234
1235         /*
1236          * in some case A channels are all non IBSS
1237          * in this case force B/G channel
1238          */
1239         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1240             !(is_channel_ibss(ch_info)))
1241                 ch_info = &priv->channel_info[0];
1242
1243         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1244         priv->band = ch_info->band;
1245
1246         iwl_set_flags_for_band(priv, priv->band);
1247
1248         priv->staging_rxon.ofdm_basic_rates =
1249             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1250         priv->staging_rxon.cck_basic_rates =
1251             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1252
1253         /* clear both MIX and PURE40 mode flag */
1254         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1255                                         RXON_FLG_CHANNEL_MODE_PURE_40);
1256         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1257         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1258         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1259         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1260         priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1261 }
1262 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1263
1264 static void iwl_set_rate(struct iwl_priv *priv)
1265 {
1266         const struct ieee80211_supported_band *hw = NULL;
1267         struct ieee80211_rate *rate;
1268         int i;
1269
1270         hw = iwl_get_hw_mode(priv, priv->band);
1271         if (!hw) {
1272                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1273                 return;
1274         }
1275
1276         priv->active_rate = 0;
1277         priv->active_rate_basic = 0;
1278
1279         for (i = 0; i < hw->n_bitrates; i++) {
1280                 rate = &(hw->bitrates[i]);
1281                 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
1282                         priv->active_rate |= (1 << rate->hw_value);
1283         }
1284
1285         IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1286                        priv->active_rate, priv->active_rate_basic);
1287
1288         /*
1289          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1290          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1291          * OFDM
1292          */
1293         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1294                 priv->staging_rxon.cck_basic_rates =
1295                     ((priv->active_rate_basic &
1296                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1297         else
1298                 priv->staging_rxon.cck_basic_rates =
1299                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1300
1301         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1302                 priv->staging_rxon.ofdm_basic_rates =
1303                     ((priv->active_rate_basic &
1304                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1305                       IWL_FIRST_OFDM_RATE) & 0xFF;
1306         else
1307                 priv->staging_rxon.ofdm_basic_rates =
1308                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1309 }
1310
1311 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1312 {
1313         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1314         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1315         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1316
1317         if (priv->switch_rxon.switch_in_progress) {
1318                 if (!le32_to_cpu(csa->status) &&
1319                     (csa->channel == priv->switch_rxon.channel)) {
1320                         rxon->channel = csa->channel;
1321                         priv->staging_rxon.channel = csa->channel;
1322                         IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
1323                               le16_to_cpu(csa->channel));
1324                 } else
1325                         IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
1326                               le16_to_cpu(csa->channel));
1327
1328                 priv->switch_rxon.switch_in_progress = false;
1329         }
1330 }
1331 EXPORT_SYMBOL(iwl_rx_csa);
1332
1333 #ifdef CONFIG_IWLWIFI_DEBUG
1334 void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1335 {
1336         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1337
1338         IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1339         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1340         IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1341         IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1342         IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1343                         le32_to_cpu(rxon->filter_flags));
1344         IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1345         IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1346                         rxon->ofdm_basic_rates);
1347         IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1348         IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1349         IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1350         IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1351 }
1352 EXPORT_SYMBOL(iwl_print_rx_config_cmd);
1353 #endif
1354 /**
1355  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1356  */
1357 void iwl_irq_handle_error(struct iwl_priv *priv)
1358 {
1359         /* Set the FW error flag -- cleared on iwl_down */
1360         set_bit(STATUS_FW_ERROR, &priv->status);
1361
1362         /* Cancel currently queued command. */
1363         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1364
1365         priv->cfg->ops->lib->dump_nic_error_log(priv);
1366         priv->cfg->ops->lib->dump_nic_event_log(priv, false);
1367 #ifdef CONFIG_IWLWIFI_DEBUG
1368         if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS)
1369                 iwl_print_rx_config_cmd(priv);
1370 #endif
1371
1372         wake_up_interruptible(&priv->wait_command_queue);
1373
1374         /* Keep the restart process from trying to send host
1375          * commands by clearing the INIT status bit */
1376         clear_bit(STATUS_READY, &priv->status);
1377
1378         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1379                 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1380                           "Restarting adapter due to uCode error.\n");
1381
1382                 if (priv->cfg->mod_params->restart_fw)
1383                         queue_work(priv->workqueue, &priv->restart);
1384         }
1385 }
1386 EXPORT_SYMBOL(iwl_irq_handle_error);
1387
1388 int iwl_apm_stop_master(struct iwl_priv *priv)
1389 {
1390         int ret = 0;
1391
1392         /* stop device's busmaster DMA activity */
1393         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
1394
1395         ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
1396                         CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
1397         if (ret)
1398                 IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n");
1399
1400         IWL_DEBUG_INFO(priv, "stop master\n");
1401
1402         return ret;
1403 }
1404 EXPORT_SYMBOL(iwl_apm_stop_master);
1405
1406 void iwl_apm_stop(struct iwl_priv *priv)
1407 {
1408         IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n");
1409
1410         /* Stop device's DMA activity */
1411         iwl_apm_stop_master(priv);
1412
1413         /* Reset the entire device */
1414         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1415
1416         udelay(10);
1417
1418         /*
1419          * Clear "initialization complete" bit to move adapter from
1420          * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
1421          */
1422         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1423 }
1424 EXPORT_SYMBOL(iwl_apm_stop);
1425
1426
1427 /*
1428  * Start up NIC's basic functionality after it has been reset
1429  * (e.g. after platform boot, or shutdown via iwl_apm_stop())
1430  * NOTE:  This does not load uCode nor start the embedded processor
1431  */
1432 int iwl_apm_init(struct iwl_priv *priv)
1433 {
1434         int ret = 0;
1435         u16 lctl;
1436
1437         IWL_DEBUG_INFO(priv, "Init card's basic functions\n");
1438
1439         /*
1440          * Use "set_bit" below rather than "write", to preserve any hardware
1441          * bits already set by default after reset.
1442          */
1443
1444         /* Disable L0S exit timer (platform NMI Work/Around) */
1445         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1446                           CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
1447
1448         /*
1449          * Disable L0s without affecting L1;
1450          *  don't wait for ICH L0s (ICH bug W/A)
1451          */
1452         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1453                           CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
1454
1455         /* Set FH wait threshold to maximum (HW error during stress W/A) */
1456         iwl_set_bit(priv, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
1457
1458         /*
1459          * Enable HAP INTA (interrupt from management bus) to
1460          * wake device's PCI Express link L1a -> L0s
1461          * NOTE:  This is no-op for 3945 (non-existant bit)
1462          */
1463         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1464                                     CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
1465
1466         /*
1467          * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
1468          * Check if BIOS (or OS) enabled L1-ASPM on this device.
1469          * If so (likely), disable L0S, so device moves directly L0->L1;
1470          *    costs negligible amount of power savings.
1471          * If not (unlikely), enable L0S, so there is at least some
1472          *    power savings, even without L1.
1473          */
1474         if (priv->cfg->set_l0s) {
1475                 lctl = iwl_pcie_link_ctl(priv);
1476                 if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
1477                                         PCI_CFG_LINK_CTRL_VAL_L1_EN) {
1478                         /* L1-ASPM enabled; disable(!) L0S  */
1479                         iwl_set_bit(priv, CSR_GIO_REG,
1480                                         CSR_GIO_REG_VAL_L0S_ENABLED);
1481                         IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n");
1482                 } else {
1483                         /* L1-ASPM disabled; enable(!) L0S */
1484                         iwl_clear_bit(priv, CSR_GIO_REG,
1485                                         CSR_GIO_REG_VAL_L0S_ENABLED);
1486                         IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n");
1487                 }
1488         }
1489
1490         /* Configure analog phase-lock-loop before activating to D0A */
1491         if (priv->cfg->pll_cfg_val)
1492                 iwl_set_bit(priv, CSR_ANA_PLL_CFG, priv->cfg->pll_cfg_val);
1493
1494         /*
1495          * Set "initialization complete" bit to move adapter from
1496          * D0U* --> D0A* (powered-up active) state.
1497          */
1498         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1499
1500         /*
1501          * Wait for clock stabilization; once stabilized, access to
1502          * device-internal resources is supported, e.g. iwl_write_prph()
1503          * and accesses to uCode SRAM.
1504          */
1505         ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
1506                         CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
1507                         CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1508         if (ret < 0) {
1509                 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
1510                 goto out;
1511         }
1512
1513         /*
1514          * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
1515          * BSM (Boostrap State Machine) is only in 3945 and 4965;
1516          * later devices (i.e. 5000 and later) have non-volatile SRAM,
1517          * and don't need BSM to restore data after power-saving sleep.
1518          *
1519          * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
1520          * do not disable clocks.  This preserves any hardware bits already
1521          * set by default in "CLK_CTRL_REG" after reset.
1522          */
1523         if (priv->cfg->use_bsm)
1524                 iwl_write_prph(priv, APMG_CLK_EN_REG,
1525                         APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
1526         else
1527                 iwl_write_prph(priv, APMG_CLK_EN_REG,
1528                         APMG_CLK_VAL_DMA_CLK_RQT);
1529         udelay(20);
1530
1531         /* Disable L1-Active */
1532         iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
1533                           APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
1534
1535 out:
1536         return ret;
1537 }
1538 EXPORT_SYMBOL(iwl_apm_init);
1539
1540
1541
1542 void iwl_configure_filter(struct ieee80211_hw *hw,
1543                           unsigned int changed_flags,
1544                           unsigned int *total_flags,
1545                           u64 multicast)
1546 {
1547         struct iwl_priv *priv = hw->priv;
1548         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1549
1550         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1551                         changed_flags, *total_flags);
1552
1553         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1554                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1555                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
1556                 else
1557                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1558         }
1559         if (changed_flags & FIF_ALLMULTI) {
1560                 if (*total_flags & FIF_ALLMULTI)
1561                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1562                 else
1563                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1564         }
1565         if (changed_flags & FIF_CONTROL) {
1566                 if (*total_flags & FIF_CONTROL)
1567                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1568                 else
1569                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1570         }
1571         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1572                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1573                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1574                 else
1575                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1576         }
1577
1578         /* We avoid iwl_commit_rxon here to commit the new filter flags
1579          * since mac80211 will call ieee80211_hw_config immediately.
1580          * (mc_list is not supported at this time). Otherwise, we need to
1581          * queue a background iwl_commit_rxon work.
1582          */
1583
1584         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1585                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1586 }
1587 EXPORT_SYMBOL(iwl_configure_filter);
1588
1589 int iwl_set_hw_params(struct iwl_priv *priv)
1590 {
1591         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1592         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1593         if (priv->cfg->mod_params->amsdu_size_8K)
1594                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
1595         else
1596                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
1597
1598         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1599
1600         if (priv->cfg->mod_params->disable_11n)
1601                 priv->cfg->sku &= ~IWL_SKU_N;
1602
1603         /* Device-specific setup */
1604         return priv->cfg->ops->lib->set_hw_params(priv);
1605 }
1606 EXPORT_SYMBOL(iwl_set_hw_params);
1607
1608 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1609 {
1610         int ret = 0;
1611         s8 prev_tx_power = priv->tx_power_user_lmt;
1612
1613         if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1614                 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1615                          tx_power,
1616                          IWL_TX_POWER_TARGET_POWER_MIN);
1617                 return -EINVAL;
1618         }
1619
1620         if (tx_power > priv->tx_power_device_lmt) {
1621                 IWL_WARN(priv,
1622                         "Requested user TXPOWER %d above upper limit %d.\n",
1623                          tx_power, priv->tx_power_device_lmt);
1624                 return -EINVAL;
1625         }
1626
1627         if (priv->tx_power_user_lmt != tx_power)
1628                 force = true;
1629
1630         /* if nic is not up don't send command */
1631         if (iwl_is_ready_rf(priv)) {
1632                 priv->tx_power_user_lmt = tx_power;
1633                 if (force && priv->cfg->ops->lib->send_tx_power)
1634                         ret = priv->cfg->ops->lib->send_tx_power(priv);
1635                 else if (!priv->cfg->ops->lib->send_tx_power)
1636                         ret = -EOPNOTSUPP;
1637                 /*
1638                  * if fail to set tx_power, restore the orig. tx power
1639                  */
1640                 if (ret)
1641                         priv->tx_power_user_lmt = prev_tx_power;
1642         }
1643
1644         /*
1645          * Even this is an async host command, the command
1646          * will always report success from uCode
1647          * So once driver can placing the command into the queue
1648          * successfully, driver can use priv->tx_power_user_lmt
1649          * to reflect the current tx power
1650          */
1651         return ret;
1652 }
1653 EXPORT_SYMBOL(iwl_set_tx_power);
1654
1655 #define ICT_COUNT (PAGE_SIZE/sizeof(u32))
1656
1657 /* Free dram table */
1658 void iwl_free_isr_ict(struct iwl_priv *priv)
1659 {
1660         if (priv->ict_tbl_vir) {
1661                 pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
1662                                         PAGE_SIZE, priv->ict_tbl_vir,
1663                                         priv->ict_tbl_dma);
1664                 priv->ict_tbl_vir = NULL;
1665         }
1666 }
1667 EXPORT_SYMBOL(iwl_free_isr_ict);
1668
1669
1670 /* allocate dram shared table it is a PAGE_SIZE aligned
1671  * also reset all data related to ICT table interrupt.
1672  */
1673 int iwl_alloc_isr_ict(struct iwl_priv *priv)
1674 {
1675
1676         if (priv->cfg->use_isr_legacy)
1677                 return 0;
1678         /* allocate shrared data table */
1679         priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
1680                                                   ICT_COUNT) + PAGE_SIZE,
1681                                                   &priv->ict_tbl_dma);
1682         if (!priv->ict_tbl_vir)
1683                 return -ENOMEM;
1684
1685         /* align table to PAGE_SIZE boundry */
1686         priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
1687
1688         IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
1689                              (unsigned long long)priv->ict_tbl_dma,
1690                              (unsigned long long)priv->aligned_ict_tbl_dma,
1691                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1692
1693         priv->ict_tbl =  priv->ict_tbl_vir +
1694                           (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
1695
1696         IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
1697                              priv->ict_tbl, priv->ict_tbl_vir,
1698                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1699
1700         /* reset table and index to all 0 */
1701         memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
1702         priv->ict_index = 0;
1703
1704         /* add periodic RX interrupt */
1705         priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
1706         return 0;
1707 }
1708 EXPORT_SYMBOL(iwl_alloc_isr_ict);
1709
1710 /* Device is going up inform it about using ICT interrupt table,
1711  * also we need to tell the driver to start using ICT interrupt.
1712  */
1713 int iwl_reset_ict(struct iwl_priv *priv)
1714 {
1715         u32 val;
1716         unsigned long flags;
1717
1718         if (!priv->ict_tbl_vir)
1719                 return 0;
1720
1721         spin_lock_irqsave(&priv->lock, flags);
1722         iwl_disable_interrupts(priv);
1723
1724         memset(&priv->ict_tbl[0], 0, sizeof(u32) * ICT_COUNT);
1725
1726         val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
1727
1728         val |= CSR_DRAM_INT_TBL_ENABLE;
1729         val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
1730
1731         IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
1732                         "aligned dma address %Lx\n",
1733                         val, (unsigned long long)priv->aligned_ict_tbl_dma);
1734
1735         iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
1736         priv->use_ict = true;
1737         priv->ict_index = 0;
1738         iwl_write32(priv, CSR_INT, priv->inta_mask);
1739         iwl_enable_interrupts(priv);
1740         spin_unlock_irqrestore(&priv->lock, flags);
1741
1742         return 0;
1743 }
1744 EXPORT_SYMBOL(iwl_reset_ict);
1745
1746 /* Device is going down disable ict interrupt usage */
1747 void iwl_disable_ict(struct iwl_priv *priv)
1748 {
1749         unsigned long flags;
1750
1751         spin_lock_irqsave(&priv->lock, flags);
1752         priv->use_ict = false;
1753         spin_unlock_irqrestore(&priv->lock, flags);
1754 }
1755 EXPORT_SYMBOL(iwl_disable_ict);
1756
1757 /* interrupt handler using ict table, with this interrupt driver will
1758  * stop using INTA register to get device's interrupt, reading this register
1759  * is expensive, device will write interrupts in ICT dram table, increment
1760  * index then will fire interrupt to driver, driver will OR all ICT table
1761  * entries from current index up to table entry with 0 value. the result is
1762  * the interrupt we need to service, driver will set the entries back to 0 and
1763  * set index.
1764  */
1765 irqreturn_t iwl_isr_ict(int irq, void *data)
1766 {
1767         struct iwl_priv *priv = data;
1768         u32 inta, inta_mask;
1769         u32 val = 0;
1770
1771         if (!priv)
1772                 return IRQ_NONE;
1773
1774         /* dram interrupt table not set yet,
1775          * use legacy interrupt.
1776          */
1777         if (!priv->use_ict)
1778                 return iwl_isr(irq, data);
1779
1780         spin_lock(&priv->lock);
1781
1782         /* Disable (but don't clear!) interrupts here to avoid
1783          * back-to-back ISRs and sporadic interrupts from our NIC.
1784          * If we have something to service, the tasklet will re-enable ints.
1785          * If we *don't* have something, we'll re-enable before leaving here.
1786          */
1787         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1788         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1789
1790
1791         /* Ignore interrupt if there's nothing in NIC to service.
1792          * This may be due to IRQ shared with another device,
1793          * or due to sporadic interrupts thrown from our NIC. */
1794         if (!priv->ict_tbl[priv->ict_index]) {
1795                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1796                 goto none;
1797         }
1798
1799         /* read all entries that not 0 start with ict_index */
1800         while (priv->ict_tbl[priv->ict_index]) {
1801
1802                 val |= le32_to_cpu(priv->ict_tbl[priv->ict_index]);
1803                 IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1804                                 priv->ict_index,
1805                                 le32_to_cpu(priv->ict_tbl[priv->ict_index]));
1806                 priv->ict_tbl[priv->ict_index] = 0;
1807                 priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1808                                                      ICT_COUNT);
1809
1810         }
1811
1812         /* We should not get this value, just ignore it. */
1813         if (val == 0xffffffff)
1814                 val = 0;
1815
1816         inta = (0xff & val) | ((0xff00 & val) << 16);
1817         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
1818                         inta, inta_mask, val);
1819
1820         inta &= priv->inta_mask;
1821         priv->inta |= inta;
1822
1823         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1824         if (likely(inta))
1825                 tasklet_schedule(&priv->irq_tasklet);
1826         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
1827                 /* Allow interrupt if was disabled by this handler and
1828                  * no tasklet was schedules, We should not enable interrupt,
1829                  * tasklet will enable it.
1830                  */
1831                 iwl_enable_interrupts(priv);
1832         }
1833
1834         spin_unlock(&priv->lock);
1835         return IRQ_HANDLED;
1836
1837  none:
1838         /* re-enable interrupts here since we don't have anything to service.
1839          * only Re-enable if disabled by irq.
1840          */
1841         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1842                 iwl_enable_interrupts(priv);
1843
1844         spin_unlock(&priv->lock);
1845         return IRQ_NONE;
1846 }
1847 EXPORT_SYMBOL(iwl_isr_ict);
1848
1849
1850 static irqreturn_t iwl_isr(int irq, void *data)
1851 {
1852         struct iwl_priv *priv = data;
1853         u32 inta, inta_mask;
1854 #ifdef CONFIG_IWLWIFI_DEBUG
1855         u32 inta_fh;
1856 #endif
1857         if (!priv)
1858                 return IRQ_NONE;
1859
1860         spin_lock(&priv->lock);
1861
1862         /* Disable (but don't clear!) interrupts here to avoid
1863          *    back-to-back ISRs and sporadic interrupts from our NIC.
1864          * If we have something to service, the tasklet will re-enable ints.
1865          * If we *don't* have something, we'll re-enable before leaving here. */
1866         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1867         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1868
1869         /* Discover which interrupts are active/pending */
1870         inta = iwl_read32(priv, CSR_INT);
1871
1872         /* Ignore interrupt if there's nothing in NIC to service.
1873          * This may be due to IRQ shared with another device,
1874          * or due to sporadic interrupts thrown from our NIC. */
1875         if (!inta) {
1876                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1877                 goto none;
1878         }
1879
1880         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1881                 /* Hardware disappeared. It might have already raised
1882                  * an interrupt */
1883                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1884                 goto unplugged;
1885         }
1886
1887 #ifdef CONFIG_IWLWIFI_DEBUG
1888         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1889                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1890                 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
1891                               "fh 0x%08x\n", inta, inta_mask, inta_fh);
1892         }
1893 #endif
1894
1895         priv->inta |= inta;
1896         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1897         if (likely(inta))
1898                 tasklet_schedule(&priv->irq_tasklet);
1899         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1900                 iwl_enable_interrupts(priv);
1901
1902  unplugged:
1903         spin_unlock(&priv->lock);
1904         return IRQ_HANDLED;
1905
1906  none:
1907         /* re-enable interrupts here since we don't have anything to service. */
1908         /* only Re-enable if diabled by irq  and no schedules tasklet. */
1909         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1910                 iwl_enable_interrupts(priv);
1911
1912         spin_unlock(&priv->lock);
1913         return IRQ_NONE;
1914 }
1915
1916 irqreturn_t iwl_isr_legacy(int irq, void *data)
1917 {
1918         struct iwl_priv *priv = data;
1919         u32 inta, inta_mask;
1920         u32 inta_fh;
1921         if (!priv)
1922                 return IRQ_NONE;
1923
1924         spin_lock(&priv->lock);
1925
1926         /* Disable (but don't clear!) interrupts here to avoid
1927          *    back-to-back ISRs and sporadic interrupts from our NIC.
1928          * If we have something to service, the tasklet will re-enable ints.
1929          * If we *don't* have something, we'll re-enable before leaving here. */
1930         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1931         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1932
1933         /* Discover which interrupts are active/pending */
1934         inta = iwl_read32(priv, CSR_INT);
1935         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1936
1937         /* Ignore interrupt if there's nothing in NIC to service.
1938          * This may be due to IRQ shared with another device,
1939          * or due to sporadic interrupts thrown from our NIC. */
1940         if (!inta && !inta_fh) {
1941                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1942                 goto none;
1943         }
1944
1945         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1946                 /* Hardware disappeared. It might have already raised
1947                  * an interrupt */
1948                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1949                 goto unplugged;
1950         }
1951
1952         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1953                       inta, inta_mask, inta_fh);
1954
1955         inta &= ~CSR_INT_BIT_SCD;
1956
1957         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1958         if (likely(inta || inta_fh))
1959                 tasklet_schedule(&priv->irq_tasklet);
1960
1961  unplugged:
1962         spin_unlock(&priv->lock);
1963         return IRQ_HANDLED;
1964
1965  none:
1966         /* re-enable interrupts here since we don't have anything to service. */
1967         /* only Re-enable if diabled by irq */
1968         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1969                 iwl_enable_interrupts(priv);
1970         spin_unlock(&priv->lock);
1971         return IRQ_NONE;
1972 }
1973 EXPORT_SYMBOL(iwl_isr_legacy);
1974
1975 int iwl_send_bt_config(struct iwl_priv *priv)
1976 {
1977         struct iwl_bt_cmd bt_cmd = {
1978                 .flags = BT_COEX_MODE_4W,
1979                 .lead_time = BT_LEAD_TIME_DEF,
1980                 .max_kill = BT_MAX_KILL_DEF,
1981                 .kill_ack_mask = 0,
1982                 .kill_cts_mask = 0,
1983         };
1984
1985         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1986                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
1987 }
1988 EXPORT_SYMBOL(iwl_send_bt_config);
1989
1990 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
1991 {
1992         struct iwl_statistics_cmd statistics_cmd = {
1993                 .configuration_flags =
1994                         clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
1995         };
1996
1997         if (flags & CMD_ASYNC)
1998                 return iwl_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD,
1999                                                sizeof(struct iwl_statistics_cmd),
2000                                                &statistics_cmd, NULL);
2001         else
2002                 return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
2003                                         sizeof(struct iwl_statistics_cmd),
2004                                         &statistics_cmd);
2005 }
2006 EXPORT_SYMBOL(iwl_send_statistics_request);
2007
2008 /**
2009  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
2010  *   using sample data 100 bytes apart.  If these sample points are good,
2011  *   it's a pretty good bet that everything between them is good, too.
2012  */
2013 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2014 {
2015         u32 val;
2016         int ret = 0;
2017         u32 errcnt = 0;
2018         u32 i;
2019
2020         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2021
2022         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2023                 /* read data comes through single port, auto-incr addr */
2024                 /* NOTE: Use the debugless read so we don't flood kernel log
2025                  * if IWL_DL_IO is set */
2026                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2027                         i + IWL49_RTC_INST_LOWER_BOUND);
2028                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2029                 if (val != le32_to_cpu(*image)) {
2030                         ret = -EIO;
2031                         errcnt++;
2032                         if (errcnt >= 3)
2033                                 break;
2034                 }
2035         }
2036
2037         return ret;
2038 }
2039
2040 /**
2041  * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
2042  *     looking at all data.
2043  */
2044 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
2045                                  u32 len)
2046 {
2047         u32 val;
2048         u32 save_len = len;
2049         int ret = 0;
2050         u32 errcnt;
2051
2052         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2053
2054         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2055                            IWL49_RTC_INST_LOWER_BOUND);
2056
2057         errcnt = 0;
2058         for (; len > 0; len -= sizeof(u32), image++) {
2059                 /* read data comes through single port, auto-incr addr */
2060                 /* NOTE: Use the debugless read so we don't flood kernel log
2061                  * if IWL_DL_IO is set */
2062                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2063                 if (val != le32_to_cpu(*image)) {
2064                         IWL_ERR(priv, "uCode INST section is invalid at "
2065                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2066                                   save_len - len, val, le32_to_cpu(*image));
2067                         ret = -EIO;
2068                         errcnt++;
2069                         if (errcnt >= 20)
2070                                 break;
2071                 }
2072         }
2073
2074         if (!errcnt)
2075                 IWL_DEBUG_INFO(priv,
2076                     "ucode image in INSTRUCTION memory is good\n");
2077
2078         return ret;
2079 }
2080
2081 /**
2082  * iwl_verify_ucode - determine which instruction image is in SRAM,
2083  *    and verify its contents
2084  */
2085 int iwl_verify_ucode(struct iwl_priv *priv)
2086 {
2087         __le32 *image;
2088         u32 len;
2089         int ret;
2090
2091         /* Try bootstrap */
2092         image = (__le32 *)priv->ucode_boot.v_addr;
2093         len = priv->ucode_boot.len;
2094         ret = iwlcore_verify_inst_sparse(priv, image, len);
2095         if (!ret) {
2096                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2097                 return 0;
2098         }
2099
2100         /* Try initialize */
2101         image = (__le32 *)priv->ucode_init.v_addr;
2102         len = priv->ucode_init.len;
2103         ret = iwlcore_verify_inst_sparse(priv, image, len);
2104         if (!ret) {
2105                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2106                 return 0;
2107         }
2108
2109         /* Try runtime/protocol */
2110         image = (__le32 *)priv->ucode_code.v_addr;
2111         len = priv->ucode_code.len;
2112         ret = iwlcore_verify_inst_sparse(priv, image, len);
2113         if (!ret) {
2114                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2115                 return 0;
2116         }
2117
2118         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2119
2120         /* Since nothing seems to match, show first several data entries in
2121          * instruction SRAM, so maybe visual inspection will give a clue.
2122          * Selection of bootstrap image (vs. other images) is arbitrary. */
2123         image = (__le32 *)priv->ucode_boot.v_addr;
2124         len = priv->ucode_boot.len;
2125         ret = iwl_verify_inst_full(priv, image, len);
2126
2127         return ret;
2128 }
2129 EXPORT_SYMBOL(iwl_verify_ucode);
2130
2131
2132 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2133 {
2134         struct iwl_ct_kill_config cmd;
2135         struct iwl_ct_kill_throttling_config adv_cmd;
2136         unsigned long flags;
2137         int ret = 0;
2138
2139         spin_lock_irqsave(&priv->lock, flags);
2140         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2141                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2142         spin_unlock_irqrestore(&priv->lock, flags);
2143         priv->thermal_throttle.ct_kill_toggle = false;
2144
2145         if (priv->cfg->support_ct_kill_exit) {
2146                 adv_cmd.critical_temperature_enter =
2147                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2148                 adv_cmd.critical_temperature_exit =
2149                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2150
2151                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2152                                        sizeof(adv_cmd), &adv_cmd);
2153                 if (ret)
2154                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2155                 else
2156                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2157                                         "succeeded, "
2158                                         "critical temperature enter is %d,"
2159                                         "exit is %d\n",
2160                                        priv->hw_params.ct_kill_threshold,
2161                                        priv->hw_params.ct_kill_exit_threshold);
2162         } else {
2163                 cmd.critical_temperature_R =
2164                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2165
2166                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2167                                        sizeof(cmd), &cmd);
2168                 if (ret)
2169                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2170                 else
2171                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2172                                         "succeeded, "
2173                                         "critical temperature is %d\n",
2174                                         priv->hw_params.ct_kill_threshold);
2175         }
2176 }
2177 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2178
2179
2180 /*
2181  * CARD_STATE_CMD
2182  *
2183  * Use: Sets the device's internal card state to enable, disable, or halt
2184  *
2185  * When in the 'enable' state the card operates as normal.
2186  * When in the 'disable' state, the card enters into a low power mode.
2187  * When in the 'halt' state, the card is shut down and must be fully
2188  * restarted to come back on.
2189  */
2190 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2191 {
2192         struct iwl_host_cmd cmd = {
2193                 .id = REPLY_CARD_STATE_CMD,
2194                 .len = sizeof(u32),
2195                 .data = &flags,
2196                 .flags = meta_flag,
2197         };
2198
2199         return iwl_send_cmd(priv, &cmd);
2200 }
2201
2202 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2203                            struct iwl_rx_mem_buffer *rxb)
2204 {
2205 #ifdef CONFIG_IWLWIFI_DEBUG
2206         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2207         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2208         IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2209                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2210 #endif
2211 }
2212 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2213
2214 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2215                                       struct iwl_rx_mem_buffer *rxb)
2216 {
2217         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2218         u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
2219         IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2220                         "notification for %s:\n", len,
2221                         get_cmd_string(pkt->hdr.cmd));
2222         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
2223 }
2224 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2225
2226 void iwl_rx_reply_error(struct iwl_priv *priv,
2227                         struct iwl_rx_mem_buffer *rxb)
2228 {
2229         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2230
2231         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2232                 "seq 0x%04X ser 0x%08X\n",
2233                 le32_to_cpu(pkt->u.err_resp.error_type),
2234                 get_cmd_string(pkt->u.err_resp.cmd_id),
2235                 pkt->u.err_resp.cmd_id,
2236                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2237                 le32_to_cpu(pkt->u.err_resp.error_info));
2238 }
2239 EXPORT_SYMBOL(iwl_rx_reply_error);
2240
2241 void iwl_clear_isr_stats(struct iwl_priv *priv)
2242 {
2243         memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2244 }
2245
2246 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2247                            const struct ieee80211_tx_queue_params *params)
2248 {
2249         struct iwl_priv *priv = hw->priv;
2250         unsigned long flags;
2251         int q;
2252
2253         IWL_DEBUG_MAC80211(priv, "enter\n");
2254
2255         if (!iwl_is_ready_rf(priv)) {
2256                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2257                 return -EIO;
2258         }
2259
2260         if (queue >= AC_NUM) {
2261                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2262                 return 0;
2263         }
2264
2265         q = AC_NUM - 1 - queue;
2266
2267         spin_lock_irqsave(&priv->lock, flags);
2268
2269         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2270         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2271         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2272         priv->qos_data.def_qos_parm.ac[q].edca_txop =
2273                         cpu_to_le16((params->txop * 32));
2274
2275         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2276         priv->qos_data.qos_active = 1;
2277
2278         if (priv->iw_mode == NL80211_IFTYPE_AP)
2279                 iwl_activate_qos(priv, 1);
2280         else if (priv->assoc_id && iwl_is_associated(priv))
2281                 iwl_activate_qos(priv, 0);
2282
2283         spin_unlock_irqrestore(&priv->lock, flags);
2284
2285         IWL_DEBUG_MAC80211(priv, "leave\n");
2286         return 0;
2287 }
2288 EXPORT_SYMBOL(iwl_mac_conf_tx);
2289
2290 static void iwl_ht_conf(struct iwl_priv *priv,
2291                         struct ieee80211_bss_conf *bss_conf)
2292 {
2293         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2294         struct ieee80211_sta *sta;
2295
2296         IWL_DEBUG_MAC80211(priv, "enter: \n");
2297
2298         if (!ht_conf->is_ht)
2299                 return;
2300
2301         ht_conf->ht_protection =
2302                 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2303         ht_conf->non_GF_STA_present =
2304                 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2305
2306         ht_conf->single_chain_sufficient = false;
2307
2308         switch (priv->iw_mode) {
2309         case NL80211_IFTYPE_STATION:
2310                 rcu_read_lock();
2311                 sta = ieee80211_find_sta(priv->vif, priv->bssid);
2312                 if (sta) {
2313                         struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
2314                         int maxstreams;
2315
2316                         maxstreams = (ht_cap->mcs.tx_params &
2317                                       IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
2318                                         >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2319                         maxstreams += 1;
2320
2321                         if ((ht_cap->mcs.rx_mask[1] == 0) &&
2322                             (ht_cap->mcs.rx_mask[2] == 0))
2323                                 ht_conf->single_chain_sufficient = true;
2324                         if (maxstreams <= 1)
2325                                 ht_conf->single_chain_sufficient = true;
2326                 } else {
2327                         /*
2328                          * If at all, this can only happen through a race
2329                          * when the AP disconnects us while we're still
2330                          * setting up the connection, in that case mac80211
2331                          * will soon tell us about that.
2332                          */
2333                         ht_conf->single_chain_sufficient = true;
2334                 }
2335                 rcu_read_unlock();
2336                 break;
2337         case NL80211_IFTYPE_ADHOC:
2338                 ht_conf->single_chain_sufficient = true;
2339                 break;
2340         default:
2341                 break;
2342         }
2343
2344         IWL_DEBUG_MAC80211(priv, "leave\n");
2345 }
2346
2347 static inline void iwl_set_no_assoc(struct iwl_priv *priv)
2348 {
2349         priv->assoc_id = 0;
2350         iwl_led_disassociate(priv);
2351         /*
2352          * inform the ucode that there is no longer an
2353          * association and that no more packets should be
2354          * sent
2355          */
2356         priv->staging_rxon.filter_flags &=
2357                 ~RXON_FILTER_ASSOC_MSK;
2358         priv->staging_rxon.assoc_id = 0;
2359         iwlcore_commit_rxon(priv);
2360 }
2361
2362 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2363 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2364                           struct ieee80211_vif *vif,
2365                           struct ieee80211_bss_conf *bss_conf,
2366                           u32 changes)
2367 {
2368         struct iwl_priv *priv = hw->priv;
2369         int ret;
2370
2371         IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2372
2373         if (!iwl_is_alive(priv))
2374                 return;
2375
2376         mutex_lock(&priv->mutex);
2377
2378         if (changes & BSS_CHANGED_BEACON &&
2379             priv->iw_mode == NL80211_IFTYPE_AP) {
2380                 dev_kfree_skb(priv->ibss_beacon);
2381                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2382         }
2383
2384         if (changes & BSS_CHANGED_BEACON_INT) {
2385                 priv->beacon_int = bss_conf->beacon_int;
2386                 /* TODO: in AP mode, do something to make this take effect */
2387         }
2388
2389         if (changes & BSS_CHANGED_BSSID) {
2390                 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2391
2392                 /*
2393                  * If there is currently a HW scan going on in the
2394                  * background then we need to cancel it else the RXON
2395                  * below/in post_associate will fail.
2396                  */
2397                 if (iwl_scan_cancel_timeout(priv, 100)) {
2398                         IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2399                         IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2400                         mutex_unlock(&priv->mutex);
2401                         return;
2402                 }
2403
2404                 /* mac80211 only sets assoc when in STATION mode */
2405                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2406                     bss_conf->assoc) {
2407                         memcpy(priv->staging_rxon.bssid_addr,
2408                                bss_conf->bssid, ETH_ALEN);
2409
2410                         /* currently needed in a few places */
2411                         memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2412                 } else {
2413                         priv->staging_rxon.filter_flags &=
2414                                 ~RXON_FILTER_ASSOC_MSK;
2415                 }
2416
2417         }
2418
2419         /*
2420          * This needs to be after setting the BSSID in case
2421          * mac80211 decides to do both changes at once because
2422          * it will invoke post_associate.
2423          */
2424         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2425             changes & BSS_CHANGED_BEACON) {
2426                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2427
2428                 if (beacon)
2429                         iwl_mac_beacon_update(hw, beacon);
2430         }
2431
2432         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2433                 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2434                                    bss_conf->use_short_preamble);
2435                 if (bss_conf->use_short_preamble)
2436                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2437                 else
2438                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2439         }
2440
2441         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2442                 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2443                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2444                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2445                 else
2446                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2447         }
2448
2449         if (changes & BSS_CHANGED_BASIC_RATES) {
2450                 /* XXX use this information
2451                  *
2452                  * To do that, remove code from iwl_set_rate() and put something
2453                  * like this here:
2454                  *
2455                 if (A-band)
2456                         priv->staging_rxon.ofdm_basic_rates =
2457                                 bss_conf->basic_rates;
2458                 else
2459                         priv->staging_rxon.ofdm_basic_rates =
2460                                 bss_conf->basic_rates >> 4;
2461                         priv->staging_rxon.cck_basic_rates =
2462                                 bss_conf->basic_rates & 0xF;
2463                  */
2464         }
2465
2466         if (changes & BSS_CHANGED_HT) {
2467                 iwl_ht_conf(priv, bss_conf);
2468
2469                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2470                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2471         }
2472
2473         if (changes & BSS_CHANGED_ASSOC) {
2474                 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2475                 if (bss_conf->assoc) {
2476                         priv->assoc_id = bss_conf->aid;
2477                         priv->beacon_int = bss_conf->beacon_int;
2478                         priv->timestamp = bss_conf->timestamp;
2479                         priv->assoc_capability = bss_conf->assoc_capability;
2480
2481                         iwl_led_associate(priv);
2482
2483                         /*
2484                          * We have just associated, don't start scan too early
2485                          * leave time for EAPOL exchange to complete.
2486                          *
2487                          * XXX: do this in mac80211
2488                          */
2489                         priv->next_scan_jiffies = jiffies +
2490                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2491                         if (!iwl_is_rfkill(priv))
2492                                 priv->cfg->ops->lib->post_associate(priv);
2493                 } else
2494                         iwl_set_no_assoc(priv);
2495         }
2496
2497         if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2498                 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2499                                    changes);
2500                 ret = iwl_send_rxon_assoc(priv);
2501                 if (!ret) {
2502                         /* Sync active_rxon with latest change. */
2503                         memcpy((void *)&priv->active_rxon,
2504                                 &priv->staging_rxon,
2505                                 sizeof(struct iwl_rxon_cmd));
2506                 }
2507         }
2508
2509         if (changes & BSS_CHANGED_BEACON_ENABLED) {
2510                 if (vif->bss_conf.enable_beacon) {
2511                         memcpy(priv->staging_rxon.bssid_addr,
2512                                bss_conf->bssid, ETH_ALEN);
2513                         memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2514                         iwlcore_config_ap(priv);
2515                 } else
2516                         iwl_set_no_assoc(priv);
2517         }
2518
2519         mutex_unlock(&priv->mutex);
2520
2521         IWL_DEBUG_MAC80211(priv, "leave\n");
2522 }
2523 EXPORT_SYMBOL(iwl_bss_info_changed);
2524
2525 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2526 {
2527         struct iwl_priv *priv = hw->priv;
2528         unsigned long flags;
2529         __le64 timestamp;
2530
2531         IWL_DEBUG_MAC80211(priv, "enter\n");
2532
2533         if (!iwl_is_ready_rf(priv)) {
2534                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2535                 return -EIO;
2536         }
2537
2538         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2539                 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2540                 return -EIO;
2541         }
2542
2543         spin_lock_irqsave(&priv->lock, flags);
2544
2545         if (priv->ibss_beacon)
2546                 dev_kfree_skb(priv->ibss_beacon);
2547
2548         priv->ibss_beacon = skb;
2549
2550         priv->assoc_id = 0;
2551         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2552         priv->timestamp = le64_to_cpu(timestamp);
2553
2554         IWL_DEBUG_MAC80211(priv, "leave\n");
2555         spin_unlock_irqrestore(&priv->lock, flags);
2556
2557         iwl_reset_qos(priv);
2558
2559         priv->cfg->ops->lib->post_associate(priv);
2560
2561
2562         return 0;
2563 }
2564 EXPORT_SYMBOL(iwl_mac_beacon_update);
2565
2566 int iwl_set_mode(struct iwl_priv *priv, int mode)
2567 {
2568         if (mode == NL80211_IFTYPE_ADHOC) {
2569                 const struct iwl_channel_info *ch_info;
2570
2571                 ch_info = iwl_get_channel_info(priv,
2572                         priv->band,
2573                         le16_to_cpu(priv->staging_rxon.channel));
2574
2575                 if (!ch_info || !is_channel_ibss(ch_info)) {
2576                         IWL_ERR(priv, "channel %d not IBSS channel\n",
2577                                   le16_to_cpu(priv->staging_rxon.channel));
2578                         return -EINVAL;
2579                 }
2580         }
2581
2582         iwl_connection_init_rx_config(priv, mode);
2583
2584         if (priv->cfg->ops->hcmd->set_rxon_chain)
2585                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2586
2587         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2588
2589         iwl_clear_stations_table(priv);
2590
2591         /* dont commit rxon if rf-kill is on*/
2592         if (!iwl_is_ready_rf(priv))
2593                 return -EAGAIN;
2594
2595         iwlcore_commit_rxon(priv);
2596
2597         return 0;
2598 }
2599 EXPORT_SYMBOL(iwl_set_mode);
2600
2601 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2602                                  struct ieee80211_if_init_conf *conf)
2603 {
2604         struct iwl_priv *priv = hw->priv;
2605         unsigned long flags;
2606
2607         IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2608
2609         if (priv->vif) {
2610                 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2611                 return -EOPNOTSUPP;
2612         }
2613
2614         spin_lock_irqsave(&priv->lock, flags);
2615         priv->vif = conf->vif;
2616         priv->iw_mode = conf->type;
2617
2618         spin_unlock_irqrestore(&priv->lock, flags);
2619
2620         mutex_lock(&priv->mutex);
2621
2622         if (conf->mac_addr) {
2623                 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2624                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2625         }
2626
2627         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2628                 /* we are not ready, will run again when ready */
2629                 set_bit(STATUS_MODE_PENDING, &priv->status);
2630
2631         mutex_unlock(&priv->mutex);
2632
2633         IWL_DEBUG_MAC80211(priv, "leave\n");
2634         return 0;
2635 }
2636 EXPORT_SYMBOL(iwl_mac_add_interface);
2637
2638 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2639                                      struct ieee80211_if_init_conf *conf)
2640 {
2641         struct iwl_priv *priv = hw->priv;
2642
2643         IWL_DEBUG_MAC80211(priv, "enter\n");
2644
2645         mutex_lock(&priv->mutex);
2646
2647         if (iwl_is_ready_rf(priv)) {
2648                 iwl_scan_cancel_timeout(priv, 100);
2649                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2650                 iwlcore_commit_rxon(priv);
2651         }
2652         if (priv->vif == conf->vif) {
2653                 priv->vif = NULL;
2654                 memset(priv->bssid, 0, ETH_ALEN);
2655         }
2656         mutex_unlock(&priv->mutex);
2657
2658         IWL_DEBUG_MAC80211(priv, "leave\n");
2659
2660 }
2661 EXPORT_SYMBOL(iwl_mac_remove_interface);
2662
2663 /**
2664  * iwl_mac_config - mac80211 config callback
2665  *
2666  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2667  * be set inappropriately and the driver currently sets the hardware up to
2668  * use it whenever needed.
2669  */
2670 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2671 {
2672         struct iwl_priv *priv = hw->priv;
2673         const struct iwl_channel_info *ch_info;
2674         struct ieee80211_conf *conf = &hw->conf;
2675         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2676         unsigned long flags = 0;
2677         int ret = 0;
2678         u16 ch;
2679         int scan_active = 0;
2680
2681         mutex_lock(&priv->mutex);
2682
2683         IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2684                                         conf->channel->hw_value, changed);
2685
2686         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2687                         test_bit(STATUS_SCANNING, &priv->status))) {
2688                 scan_active = 1;
2689                 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2690         }
2691
2692
2693         /* during scanning mac80211 will delay channel setting until
2694          * scan finish with changed = 0
2695          */
2696         if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2697                 if (scan_active)
2698                         goto set_ch_out;
2699
2700                 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2701                 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2702                 if (!is_channel_valid(ch_info)) {
2703                         IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2704                         ret = -EINVAL;
2705                         goto set_ch_out;
2706                 }
2707
2708                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2709                         !is_channel_ibss(ch_info)) {
2710                         IWL_ERR(priv, "channel %d in band %d not "
2711                                 "IBSS channel\n",
2712                                 conf->channel->hw_value, conf->channel->band);
2713                         ret = -EINVAL;
2714                         goto set_ch_out;
2715                 }
2716
2717                 spin_lock_irqsave(&priv->lock, flags);
2718
2719                 /* Configure HT40 channels */
2720                 ht_conf->is_ht = conf_is_ht(conf);
2721                 if (ht_conf->is_ht) {
2722                         if (conf_is_ht40_minus(conf)) {
2723                                 ht_conf->extension_chan_offset =
2724                                         IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2725                                 ht_conf->is_40mhz = true;
2726                         } else if (conf_is_ht40_plus(conf)) {
2727                                 ht_conf->extension_chan_offset =
2728                                         IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2729                                 ht_conf->is_40mhz = true;
2730                         } else {
2731                                 ht_conf->extension_chan_offset =
2732                                         IEEE80211_HT_PARAM_CHA_SEC_NONE;
2733                                 ht_conf->is_40mhz = false;
2734                         }
2735                 } else
2736                         ht_conf->is_40mhz = false;
2737                 /* Default to no protection. Protection mode will later be set
2738                  * from BSS config in iwl_ht_conf */
2739                 ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2740
2741                 /* if we are switching from ht to 2.4 clear flags
2742                  * from any ht related info since 2.4 does not
2743                  * support ht */
2744                 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2745                         priv->staging_rxon.flags = 0;
2746
2747                 iwl_set_rxon_channel(priv, conf->channel);
2748
2749                 iwl_set_flags_for_band(priv, conf->channel->band);
2750                 spin_unlock_irqrestore(&priv->lock, flags);
2751                 if (iwl_is_associated(priv) &&
2752                     (le16_to_cpu(priv->active_rxon.channel) != ch) &&
2753                     priv->cfg->ops->lib->set_channel_switch) {
2754                         iwl_set_rate(priv);
2755                         /*
2756                          * at this point, staging_rxon has the
2757                          * configuration for channel switch
2758                          */
2759                         ret = priv->cfg->ops->lib->set_channel_switch(priv,
2760                                 ch);
2761                         if (!ret) {
2762                                 iwl_print_rx_config_cmd(priv);
2763                                 goto out;
2764                         }
2765                         priv->switch_rxon.switch_in_progress = false;
2766                 }
2767  set_ch_out:
2768                 /* The list of supported rates and rate mask can be different
2769                  * for each band; since the band may have changed, reset
2770                  * the rate mask to what mac80211 lists */
2771                 iwl_set_rate(priv);
2772         }
2773
2774         if (changed & (IEEE80211_CONF_CHANGE_PS |
2775                         IEEE80211_CONF_CHANGE_IDLE)) {
2776                 ret = iwl_power_update_mode(priv, false);
2777                 if (ret)
2778                         IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
2779         }
2780
2781         if (changed & IEEE80211_CONF_CHANGE_POWER) {
2782                 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2783                         priv->tx_power_user_lmt, conf->power_level);
2784
2785                 iwl_set_tx_power(priv, conf->power_level, false);
2786         }
2787
2788         /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2789         if (priv->cfg->ops->hcmd->set_rxon_chain)
2790                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2791
2792         if (!iwl_is_ready(priv)) {
2793                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2794                 goto out;
2795         }
2796
2797         if (scan_active)
2798                 goto out;
2799
2800         if (memcmp(&priv->active_rxon,
2801                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2802                 iwlcore_commit_rxon(priv);
2803         else
2804                 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2805
2806
2807 out:
2808         IWL_DEBUG_MAC80211(priv, "leave\n");
2809         mutex_unlock(&priv->mutex);
2810         return ret;
2811 }
2812 EXPORT_SYMBOL(iwl_mac_config);
2813
2814 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2815                          struct ieee80211_tx_queue_stats *stats)
2816 {
2817         struct iwl_priv *priv = hw->priv;
2818         int i, avail;
2819         struct iwl_tx_queue *txq;
2820         struct iwl_queue *q;
2821         unsigned long flags;
2822
2823         IWL_DEBUG_MAC80211(priv, "enter\n");
2824
2825         if (!iwl_is_ready_rf(priv)) {
2826                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2827                 return -EIO;
2828         }
2829
2830         spin_lock_irqsave(&priv->lock, flags);
2831
2832         for (i = 0; i < AC_NUM; i++) {
2833                 txq = &priv->txq[i];
2834                 q = &txq->q;
2835                 avail = iwl_queue_space(q);
2836
2837                 stats[i].len = q->n_window - avail;
2838                 stats[i].limit = q->n_window - q->high_mark;
2839                 stats[i].count = q->n_window;
2840
2841         }
2842         spin_unlock_irqrestore(&priv->lock, flags);
2843
2844         IWL_DEBUG_MAC80211(priv, "leave\n");
2845
2846         return 0;
2847 }
2848 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2849
2850 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2851 {
2852         struct iwl_priv *priv = hw->priv;
2853         unsigned long flags;
2854
2855         mutex_lock(&priv->mutex);
2856         IWL_DEBUG_MAC80211(priv, "enter\n");
2857
2858         spin_lock_irqsave(&priv->lock, flags);
2859         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
2860         spin_unlock_irqrestore(&priv->lock, flags);
2861
2862         iwl_reset_qos(priv);
2863
2864         spin_lock_irqsave(&priv->lock, flags);
2865         priv->assoc_id = 0;
2866         priv->assoc_capability = 0;
2867         priv->assoc_station_added = 0;
2868
2869         /* new association get rid of ibss beacon skb */
2870         if (priv->ibss_beacon)
2871                 dev_kfree_skb(priv->ibss_beacon);
2872
2873         priv->ibss_beacon = NULL;
2874
2875         priv->beacon_int = priv->vif->bss_conf.beacon_int;
2876         priv->timestamp = 0;
2877         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2878                 priv->beacon_int = 0;
2879
2880         spin_unlock_irqrestore(&priv->lock, flags);
2881
2882         if (!iwl_is_ready_rf(priv)) {
2883                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2884                 mutex_unlock(&priv->mutex);
2885                 return;
2886         }
2887
2888         /* we are restarting association process
2889          * clear RXON_FILTER_ASSOC_MSK bit
2890          */
2891         if (priv->iw_mode != NL80211_IFTYPE_AP) {
2892                 iwl_scan_cancel_timeout(priv, 100);
2893                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2894                 iwlcore_commit_rxon(priv);
2895         }
2896
2897         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2898                 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2899                 mutex_unlock(&priv->mutex);
2900                 return;
2901         }
2902
2903         iwl_set_rate(priv);
2904
2905         mutex_unlock(&priv->mutex);
2906
2907         IWL_DEBUG_MAC80211(priv, "leave\n");
2908 }
2909 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2910
2911 int iwl_alloc_txq_mem(struct iwl_priv *priv)
2912 {
2913         if (!priv->txq)
2914                 priv->txq = kzalloc(
2915                         sizeof(struct iwl_tx_queue) * priv->cfg->num_of_queues,
2916                         GFP_KERNEL);
2917         if (!priv->txq) {
2918                 IWL_ERR(priv, "Not enough memory for txq \n");
2919                 return -ENOMEM;
2920         }
2921         return 0;
2922 }
2923 EXPORT_SYMBOL(iwl_alloc_txq_mem);
2924
2925 void iwl_free_txq_mem(struct iwl_priv *priv)
2926 {
2927         kfree(priv->txq);
2928         priv->txq = NULL;
2929 }
2930 EXPORT_SYMBOL(iwl_free_txq_mem);
2931
2932 int iwl_send_wimax_coex(struct iwl_priv *priv)
2933 {
2934         struct iwl_wimax_coex_cmd uninitialized_var(coex_cmd);
2935
2936         if (priv->cfg->support_wimax_coexist) {
2937                 /* UnMask wake up src at associated sleep */
2938                 coex_cmd.flags |= COEX_FLAGS_ASSOC_WA_UNMASK_MSK;
2939
2940                 /* UnMask wake up src at unassociated sleep */
2941                 coex_cmd.flags |= COEX_FLAGS_UNASSOC_WA_UNMASK_MSK;
2942                 memcpy(coex_cmd.sta_prio, cu_priorities,
2943                         sizeof(struct iwl_wimax_coex_event_entry) *
2944                          COEX_NUM_OF_EVENTS);
2945
2946                 /* enabling the coexistence feature */
2947                 coex_cmd.flags |= COEX_FLAGS_COEX_ENABLE_MSK;
2948
2949                 /* enabling the priorities tables */
2950                 coex_cmd.flags |= COEX_FLAGS_STA_TABLE_VALID_MSK;
2951         } else {
2952                 /* coexistence is disabled */
2953                 memset(&coex_cmd, 0, sizeof(coex_cmd));
2954         }
2955         return iwl_send_cmd_pdu(priv, COEX_PRIORITY_TABLE_CMD,
2956                                 sizeof(coex_cmd), &coex_cmd);
2957 }
2958 EXPORT_SYMBOL(iwl_send_wimax_coex);
2959
2960 #ifdef CONFIG_IWLWIFI_DEBUGFS
2961
2962 #define IWL_TRAFFIC_DUMP_SIZE   (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2963
2964 void iwl_reset_traffic_log(struct iwl_priv *priv)
2965 {
2966         priv->tx_traffic_idx = 0;
2967         priv->rx_traffic_idx = 0;
2968         if (priv->tx_traffic)
2969                 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2970         if (priv->rx_traffic)
2971                 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2972 }
2973
2974 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2975 {
2976         u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2977
2978         if (iwl_debug_level & IWL_DL_TX) {
2979                 if (!priv->tx_traffic) {
2980                         priv->tx_traffic =
2981                                 kzalloc(traffic_size, GFP_KERNEL);
2982                         if (!priv->tx_traffic)
2983                                 return -ENOMEM;
2984                 }
2985         }
2986         if (iwl_debug_level & IWL_DL_RX) {
2987                 if (!priv->rx_traffic) {
2988                         priv->rx_traffic =
2989                                 kzalloc(traffic_size, GFP_KERNEL);
2990                         if (!priv->rx_traffic)
2991                                 return -ENOMEM;
2992                 }
2993         }
2994         iwl_reset_traffic_log(priv);
2995         return 0;
2996 }
2997 EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2998
2999 void iwl_free_traffic_mem(struct iwl_priv *priv)
3000 {
3001         kfree(priv->tx_traffic);
3002         priv->tx_traffic = NULL;
3003
3004         kfree(priv->rx_traffic);
3005         priv->rx_traffic = NULL;
3006 }
3007 EXPORT_SYMBOL(iwl_free_traffic_mem);
3008
3009 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
3010                       u16 length, struct ieee80211_hdr *header)
3011 {
3012         __le16 fc;
3013         u16 len;
3014
3015         if (likely(!(iwl_debug_level & IWL_DL_TX)))
3016                 return;
3017
3018         if (!priv->tx_traffic)
3019                 return;
3020
3021         fc = header->frame_control;
3022         if (ieee80211_is_data(fc)) {
3023                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
3024                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
3025                 memcpy((priv->tx_traffic +
3026                        (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
3027                        header, len);
3028                 priv->tx_traffic_idx =
3029                         (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
3030         }
3031 }
3032 EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
3033
3034 void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
3035                       u16 length, struct ieee80211_hdr *header)
3036 {
3037         __le16 fc;
3038         u16 len;
3039
3040         if (likely(!(iwl_debug_level & IWL_DL_RX)))
3041                 return;
3042
3043         if (!priv->rx_traffic)
3044                 return;
3045
3046         fc = header->frame_control;
3047         if (ieee80211_is_data(fc)) {
3048                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
3049                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
3050                 memcpy((priv->rx_traffic +
3051                        (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
3052                        header, len);
3053                 priv->rx_traffic_idx =
3054                         (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
3055         }
3056 }
3057 EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
3058
3059 const char *get_mgmt_string(int cmd)
3060 {
3061         switch (cmd) {
3062                 IWL_CMD(MANAGEMENT_ASSOC_REQ);
3063                 IWL_CMD(MANAGEMENT_ASSOC_RESP);
3064                 IWL_CMD(MANAGEMENT_REASSOC_REQ);
3065                 IWL_CMD(MANAGEMENT_REASSOC_RESP);
3066                 IWL_CMD(MANAGEMENT_PROBE_REQ);
3067                 IWL_CMD(MANAGEMENT_PROBE_RESP);
3068                 IWL_CMD(MANAGEMENT_BEACON);
3069                 IWL_CMD(MANAGEMENT_ATIM);
3070                 IWL_CMD(MANAGEMENT_DISASSOC);
3071                 IWL_CMD(MANAGEMENT_AUTH);
3072                 IWL_CMD(MANAGEMENT_DEAUTH);
3073                 IWL_CMD(MANAGEMENT_ACTION);
3074         default:
3075                 return "UNKNOWN";
3076
3077         }
3078 }
3079
3080 const char *get_ctrl_string(int cmd)
3081 {
3082         switch (cmd) {
3083                 IWL_CMD(CONTROL_BACK_REQ);
3084                 IWL_CMD(CONTROL_BACK);
3085                 IWL_CMD(CONTROL_PSPOLL);
3086                 IWL_CMD(CONTROL_RTS);
3087                 IWL_CMD(CONTROL_CTS);
3088                 IWL_CMD(CONTROL_ACK);
3089                 IWL_CMD(CONTROL_CFEND);
3090                 IWL_CMD(CONTROL_CFENDACK);
3091         default:
3092                 return "UNKNOWN";
3093
3094         }
3095 }
3096
3097 void iwl_clear_traffic_stats(struct iwl_priv *priv)
3098 {
3099         memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
3100         memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
3101         priv->led_tpt = 0;
3102 }
3103
3104 /*
3105  * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
3106  * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
3107  * Use debugFs to display the rx/rx_statistics
3108  * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
3109  * information will be recorded, but DATA pkt still will be recorded
3110  * for the reason of iwl_led.c need to control the led blinking based on
3111  * number of tx and rx data.
3112  *
3113  */
3114 void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
3115 {
3116         struct traffic_stats    *stats;
3117
3118         if (is_tx)
3119                 stats = &priv->tx_stats;
3120         else
3121                 stats = &priv->rx_stats;
3122
3123         if (ieee80211_is_mgmt(fc)) {
3124                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
3125                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
3126                         stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
3127                         break;
3128                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
3129                         stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
3130                         break;
3131                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
3132                         stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
3133                         break;
3134                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
3135                         stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
3136                         break;
3137                 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
3138                         stats->mgmt[MANAGEMENT_PROBE_REQ]++;
3139                         break;
3140                 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
3141                         stats->mgmt[MANAGEMENT_PROBE_RESP]++;
3142                         break;
3143                 case cpu_to_le16(IEEE80211_STYPE_BEACON):
3144                         stats->mgmt[MANAGEMENT_BEACON]++;
3145                         break;
3146                 case cpu_to_le16(IEEE80211_STYPE_ATIM):
3147                         stats->mgmt[MANAGEMENT_ATIM]++;
3148                         break;
3149                 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
3150                         stats->mgmt[MANAGEMENT_DISASSOC]++;
3151                         break;
3152                 case cpu_to_le16(IEEE80211_STYPE_AUTH):
3153                         stats->mgmt[MANAGEMENT_AUTH]++;
3154                         break;
3155                 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
3156                         stats->mgmt[MANAGEMENT_DEAUTH]++;
3157                         break;
3158                 case cpu_to_le16(IEEE80211_STYPE_ACTION):
3159                         stats->mgmt[MANAGEMENT_ACTION]++;
3160                         break;
3161                 }
3162         } else if (ieee80211_is_ctl(fc)) {
3163                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
3164                 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
3165                         stats->ctrl[CONTROL_BACK_REQ]++;
3166                         break;
3167                 case cpu_to_le16(IEEE80211_STYPE_BACK):
3168                         stats->ctrl[CONTROL_BACK]++;
3169                         break;
3170                 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
3171                         stats->ctrl[CONTROL_PSPOLL]++;
3172                         break;
3173                 case cpu_to_le16(IEEE80211_STYPE_RTS):
3174                         stats->ctrl[CONTROL_RTS]++;
3175                         break;
3176                 case cpu_to_le16(IEEE80211_STYPE_CTS):
3177                         stats->ctrl[CONTROL_CTS]++;
3178                         break;
3179                 case cpu_to_le16(IEEE80211_STYPE_ACK):
3180                         stats->ctrl[CONTROL_ACK]++;
3181                         break;
3182                 case cpu_to_le16(IEEE80211_STYPE_CFEND):
3183                         stats->ctrl[CONTROL_CFEND]++;
3184                         break;
3185                 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
3186                         stats->ctrl[CONTROL_CFENDACK]++;
3187                         break;
3188                 }
3189         } else {
3190                 /* data */
3191                 stats->data_cnt++;
3192                 stats->data_bytes += len;
3193         }
3194         iwl_leds_background(priv);
3195 }
3196 EXPORT_SYMBOL(iwl_update_stats);
3197 #endif
3198
3199 #ifdef CONFIG_PM
3200
3201 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3202 {
3203         struct iwl_priv *priv = pci_get_drvdata(pdev);
3204
3205         /*
3206          * This function is called when system goes into suspend state
3207          * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
3208          * first but since iwl_mac_stop() has no knowledge of who the caller is,
3209          * it will not call apm_ops.stop() to stop the DMA operation.
3210          * Calling apm_ops.stop here to make sure we stop the DMA.
3211          */
3212         priv->cfg->ops->lib->apm_ops.stop(priv);
3213
3214         pci_save_state(pdev);
3215         pci_disable_device(pdev);
3216         pci_set_power_state(pdev, PCI_D3hot);
3217
3218         return 0;
3219 }
3220 EXPORT_SYMBOL(iwl_pci_suspend);
3221
3222 int iwl_pci_resume(struct pci_dev *pdev)
3223 {
3224         struct iwl_priv *priv = pci_get_drvdata(pdev);
3225         int ret;
3226
3227         pci_set_power_state(pdev, PCI_D0);
3228         ret = pci_enable_device(pdev);
3229         if (ret)
3230                 return ret;
3231         pci_restore_state(pdev);
3232         iwl_enable_interrupts(priv);
3233
3234         return 0;
3235 }
3236 EXPORT_SYMBOL(iwl_pci_resume);
3237
3238 #endif /* CONFIG_PM */