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

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 - 2010 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 /*
  51  * set bt_coex_active to true, uCode will do kill/defer
  52  * every time the priority line is asserted (BT is sending signals on the
  53  * priority line in the PCIx).
  54  * set bt_coex_active to false, uCode will ignore the BT activity and
  55  * perform the normal operation
  56  *
  57  * User might experience transmit issue on some platform due to WiFi/BT
  58  * co-exist problem. The possible behaviors are:
  59  *   Able to scan and finding all the available AP
  60  *   Not able to associate with any AP
  61  * On those platforms, WiFi communication can be restored by set
  62  * "bt_coex_active" module parameter to "false"
  63  *
  64  * default: bt_coex_active = true (BT_COEX_ENABLE)
  65  */
  66 static bool bt_coex_active = true;
  67 module_param(bt_coex_active, bool, S_IRUGO);
  68 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist\n");
  69
  70 static struct iwl_wimax_coex_event_entry cu_priorities[COEX_NUM_OF_EVENTS] = {
  71         {COEX_CU_UNASSOC_IDLE_RP, COEX_CU_UNASSOC_IDLE_WP,
  72          0, COEX_UNASSOC_IDLE_FLAGS},
  73         {COEX_CU_UNASSOC_MANUAL_SCAN_RP, COEX_CU_UNASSOC_MANUAL_SCAN_WP,
  74          0, COEX_UNASSOC_MANUAL_SCAN_FLAGS},
  75         {COEX_CU_UNASSOC_AUTO_SCAN_RP, COEX_CU_UNASSOC_AUTO_SCAN_WP,
  76          0, COEX_UNASSOC_AUTO_SCAN_FLAGS},
  77         {COEX_CU_CALIBRATION_RP, COEX_CU_CALIBRATION_WP,
  78          0, COEX_CALIBRATION_FLAGS},
  79         {COEX_CU_PERIODIC_CALIBRATION_RP, COEX_CU_PERIODIC_CALIBRATION_WP,
  80          0, COEX_PERIODIC_CALIBRATION_FLAGS},
  81         {COEX_CU_CONNECTION_ESTAB_RP, COEX_CU_CONNECTION_ESTAB_WP,
  82          0, COEX_CONNECTION_ESTAB_FLAGS},
  83         {COEX_CU_ASSOCIATED_IDLE_RP, COEX_CU_ASSOCIATED_IDLE_WP,
  84          0, COEX_ASSOCIATED_IDLE_FLAGS},
  85         {COEX_CU_ASSOC_MANUAL_SCAN_RP, COEX_CU_ASSOC_MANUAL_SCAN_WP,
  86          0, COEX_ASSOC_MANUAL_SCAN_FLAGS},
  87         {COEX_CU_ASSOC_AUTO_SCAN_RP, COEX_CU_ASSOC_AUTO_SCAN_WP,
  88          0, COEX_ASSOC_AUTO_SCAN_FLAGS},
  89         {COEX_CU_ASSOC_ACTIVE_LEVEL_RP, COEX_CU_ASSOC_ACTIVE_LEVEL_WP,
  90          0, COEX_ASSOC_ACTIVE_LEVEL_FLAGS},
  91         {COEX_CU_RF_ON_RP, COEX_CU_RF_ON_WP, 0, COEX_CU_RF_ON_FLAGS},
  92         {COEX_CU_RF_OFF_RP, COEX_CU_RF_OFF_WP, 0, COEX_RF_OFF_FLAGS},
  93         {COEX_CU_STAND_ALONE_DEBUG_RP, COEX_CU_STAND_ALONE_DEBUG_WP,
  94          0, COEX_STAND_ALONE_DEBUG_FLAGS},
  95         {COEX_CU_IPAN_ASSOC_LEVEL_RP, COEX_CU_IPAN_ASSOC_LEVEL_WP,
  96          0, COEX_IPAN_ASSOC_LEVEL_FLAGS},
  97         {COEX_CU_RSRVD1_RP, COEX_CU_RSRVD1_WP, 0, COEX_RSRVD1_FLAGS},
  98         {COEX_CU_RSRVD2_RP, COEX_CU_RSRVD2_WP, 0, COEX_RSRVD2_FLAGS}
  99 };
 100
 101 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np)    \
 102         [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,      \
 103                                     IWL_RATE_SISO_##s##M_PLCP, \
 104                                     IWL_RATE_MIMO2_##s##M_PLCP,\
 105                                     IWL_RATE_MIMO3_##s##M_PLCP,\
 106                                     IWL_RATE_##r##M_IEEE,      \
 107                                     IWL_RATE_##ip##M_INDEX,    \
 108                                     IWL_RATE_##in##M_INDEX,    \
 109                                     IWL_RATE_##rp##M_INDEX,    \
 110                                     IWL_RATE_##rn##M_INDEX,    \
 111                                     IWL_RATE_##pp##M_INDEX,    \
 112                                     IWL_RATE_##np##M_INDEX }
 113
 114 u32 iwl_debug_level;
 115 EXPORT_SYMBOL(iwl_debug_level);
 116
 117 /*
 118  * Parameter order:
 119  *   rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
 120  *
 121  * If there isn't a valid next or previous rate then INV is used which
 122  * maps to IWL_RATE_INVALID
 123  *
 124  */
 125 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
 126         IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2),    /*  1mbps */
 127         IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5),          /*  2mbps */
 128         IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
 129         IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18),      /* 11mbps */
 130         IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
 131         IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11),       /*  9mbps */
 132         IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
 133         IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
 134         IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
 135         IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
 136         IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
 137         IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
 138         IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
 139         /* FIXME:RS:          ^^    should be INV (legacy) */
 140 };
 141 EXPORT_SYMBOL(iwl_rates);
 142
 143 /**
 144  * translate ucode response to mac80211 tx status control values
 145  */
 146 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
 147                                   struct ieee80211_tx_info *info)
 148 {
 149         struct ieee80211_tx_rate *r = &info->control.rates[0];
 150
 151         info->antenna_sel_tx =
 152                 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
 153         if (rate_n_flags & RATE_MCS_HT_MSK)
 154                 r->flags |= IEEE80211_TX_RC_MCS;
 155         if (rate_n_flags & RATE_MCS_GF_MSK)
 156                 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
 157         if (rate_n_flags & RATE_MCS_HT40_MSK)
 158                 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
 159         if (rate_n_flags & RATE_MCS_DUP_MSK)
 160                 r->flags |= IEEE80211_TX_RC_DUP_DATA;
 161         if (rate_n_flags & RATE_MCS_SGI_MSK)
 162                 r->flags |= IEEE80211_TX_RC_SHORT_GI;
 163         r->idx = iwl_hwrate_to_mac80211_idx(rate_n_flags, info->band);
 164 }
 165 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
 166
 167 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
 168 {
 169         int idx = 0;
 170
 171         /* HT rate format */
 172         if (rate_n_flags & RATE_MCS_HT_MSK) {
 173                 idx = (rate_n_flags & 0xff);
 174
 175                 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
 176                         idx = idx - IWL_RATE_MIMO3_6M_PLCP;
 177                 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
 178                         idx = idx - IWL_RATE_MIMO2_6M_PLCP;
 179
 180                 idx += IWL_FIRST_OFDM_RATE;
 181                 /* skip 9M not supported in ht*/
 182                 if (idx >= IWL_RATE_9M_INDEX)
 183                         idx += 1;
 184                 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
 185                         return idx;
 186
 187         /* legacy rate format, search for match in table */
 188         } else {
 189                 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
 190                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 191                                 return idx;
 192         }
 193
 194         return -1;
 195 }
 196 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
 197
 198 int iwl_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
 199 {
 200         int idx = 0;
 201         int band_offset = 0;
 202
 203         /* HT rate format: mac80211 wants an MCS number, which is just LSB */
 204         if (rate_n_flags & RATE_MCS_HT_MSK) {
 205                 idx = (rate_n_flags & 0xff);
 206                 return idx;
 207         /* Legacy rate format, search for match in table */
 208         } else {
 209                 if (band == IEEE80211_BAND_5GHZ)
 210                         band_offset = IWL_FIRST_OFDM_RATE;
 211                 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
 212                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 213                                 return idx - band_offset;
 214         }
 215
 216         return -1;
 217 }
 218
 219 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
 220 {
 221         int i;
 222         u8 ind = ant;
 223         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 224                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 225                 if (priv->hw_params.valid_tx_ant & BIT(ind))
 226                         return ind;
 227         }
 228         return ant;
 229 }
 230 EXPORT_SYMBOL(iwl_toggle_tx_ant);
 231
 232 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 233 EXPORT_SYMBOL(iwl_bcast_addr);
 234
 235
 236 /* This function both allocates and initializes hw and priv. */
 237 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
 238                 struct ieee80211_ops *hw_ops)
 239 {
 240         struct iwl_priv *priv;
 241
 242         /* mac80211 allocates memory for this device instance, including
 243          *   space for this driver's private structure */
 244         struct ieee80211_hw *hw =
 245                 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
 246         if (hw == NULL) {
 247                 printk(KERN_ERR "%s: Can not allocate network device\n",
 248                        cfg->name);
 249                 goto out;
 250         }
 251
 252         priv = hw->priv;
 253         priv->hw = hw;
 254
 255 out:
 256         return hw;
 257 }
 258 EXPORT_SYMBOL(iwl_alloc_all);
 259
 260 void iwl_hw_detect(struct iwl_priv *priv)
 261 {
 262         priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
 263         priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
 264         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
 265 }
 266 EXPORT_SYMBOL(iwl_hw_detect);
 267
 268 int iwl_hw_nic_init(struct iwl_priv *priv)
 269 {
 270         unsigned long flags;
 271         struct iwl_rx_queue *rxq = &priv->rxq;
 272         int ret;
 273
 274         /* nic_init */
 275         spin_lock_irqsave(&priv->lock, flags);
 276         priv->cfg->ops->lib->apm_ops.init(priv);
 277
 278         /* Set interrupt coalescing calibration timer to default (512 usecs) */
 279         iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_CALIB_TIMEOUT_DEF);
 280
 281         spin_unlock_irqrestore(&priv->lock, flags);
 282
 283         ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
 284
 285         priv->cfg->ops->lib->apm_ops.config(priv);
 286
 287         /* Allocate the RX queue, or reset if it is already allocated */
 288         if (!rxq->bd) {
 289                 ret = iwl_rx_queue_alloc(priv);
 290                 if (ret) {
 291                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
 292                         return -ENOMEM;
 293                 }
 294         } else
 295                 iwl_rx_queue_reset(priv, rxq);
 296
 297         iwl_rx_replenish(priv);
 298
 299         iwl_rx_init(priv, rxq);
 300
 301         spin_lock_irqsave(&priv->lock, flags);
 302
 303         rxq->need_update = 1;
 304         iwl_rx_queue_update_write_ptr(priv, rxq);
 305
 306         spin_unlock_irqrestore(&priv->lock, flags);
 307
 308         /* Allocate and init all Tx and Command queues */
 309         ret = iwl_txq_ctx_reset(priv);
 310         if (ret)
 311                 return ret;
 312
 313         set_bit(STATUS_INIT, &priv->status);
 314
 315         return 0;
 316 }
 317 EXPORT_SYMBOL(iwl_hw_nic_init);
 318
 319 /*
 320  * QoS  support
 321 */
 322 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 323 {
 324         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 325                 return;
 326
 327         priv->qos_data.def_qos_parm.qos_flags = 0;
 328
 329         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 330             !priv->qos_data.qos_cap.q_AP.txop_request)
 331                 priv->qos_data.def_qos_parm.qos_flags |=
 332                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 333         if (priv->qos_data.qos_active)
 334                 priv->qos_data.def_qos_parm.qos_flags |=
 335                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 336
 337         if (priv->current_ht_config.is_ht)
 338                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 339
 340         if (force || iwl_is_associated(priv)) {
 341                 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 342                                 priv->qos_data.qos_active,
 343                                 priv->qos_data.def_qos_parm.qos_flags);
 344
 345                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 346                                        sizeof(struct iwl_qosparam_cmd),
 347                                        &priv->qos_data.def_qos_parm, NULL);
 348         }
 349 }
 350 EXPORT_SYMBOL(iwl_activate_qos);
 351
 352 /*
 353  * AC        CWmin         CW max      AIFSN      TXOP Limit    TXOP Limit
 354  *                                              (802.11b)      (802.11a/g)
 355  * AC_BK      15            1023        7           0               0
 356  * AC_BE      15            1023        3           0               0
 357  * AC_VI       7              15        2          6.016ms       3.008ms
 358  * AC_VO       3               7        2          3.264ms       1.504ms
 359  */
 360 void iwl_reset_qos(struct iwl_priv *priv)
 361 {
 362         u16 cw_min = 15;
 363         u16 cw_max = 1023;
 364         u8 aifs = 2;
 365         bool is_legacy = false;
 366         unsigned long flags;
 367         int i;
 368
 369         spin_lock_irqsave(&priv->lock, flags);
 370         /* QoS always active in AP and ADHOC mode
 371          * In STA mode wait for association
 372          */
 373         if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
 374             priv->iw_mode == NL80211_IFTYPE_AP)
 375                 priv->qos_data.qos_active = 1;
 376         else
 377                 priv->qos_data.qos_active = 0;
 378
 379         /* check for legacy mode */
 380         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
 381             (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
 382             (priv->iw_mode == NL80211_IFTYPE_STATION &&
 383             (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
 384                 cw_min = 31;
 385                 is_legacy = 1;
 386         }
 387
 388         if (priv->qos_data.qos_active)
 389                 aifs = 3;
 390
 391         /* AC_BE */
 392         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
 393         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
 394         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
 395         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
 396         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
 397
 398         if (priv->qos_data.qos_active) {
 399                 /* AC_BK */
 400                 i = 1;
 401                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
 402                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
 403                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
 404                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
 405                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 406
 407                 /* AC_VI */
 408                 i = 2;
 409                 priv->qos_data.def_qos_parm.ac[i].cw_min =
 410                         cpu_to_le16((cw_min + 1) / 2 - 1);
 411                 priv->qos_data.def_qos_parm.ac[i].cw_max =
 412                         cpu_to_le16(cw_min);
 413                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
 414                 if (is_legacy)
 415                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 416                                 cpu_to_le16(6016);
 417                 else
 418                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 419                                 cpu_to_le16(3008);
 420                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 421
 422                 /* AC_VO */
 423                 i = 3;
 424                 priv->qos_data.def_qos_parm.ac[i].cw_min =
 425                         cpu_to_le16((cw_min + 1) / 4 - 1);
 426                 priv->qos_data.def_qos_parm.ac[i].cw_max =
 427                         cpu_to_le16((cw_min + 1) / 2 - 1);
 428                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
 429                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 430                 if (is_legacy)
 431                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 432                                 cpu_to_le16(3264);
 433                 else
 434                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
 435                                 cpu_to_le16(1504);
 436         } else {
 437                 for (i = 1; i < 4; i++) {
 438                         priv->qos_data.def_qos_parm.ac[i].cw_min =
 439                                 cpu_to_le16(cw_min);
 440                         priv->qos_data.def_qos_parm.ac[i].cw_max =
 441                                 cpu_to_le16(cw_max);
 442                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
 443                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
 444                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
 445                 }
 446         }
 447         IWL_DEBUG_QOS(priv, "set QoS to default \n");
 448
 449         spin_unlock_irqrestore(&priv->lock, flags);
 450 }
 451 EXPORT_SYMBOL(iwl_reset_qos);
 452
 453 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
 454 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
 455 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
 456                               struct ieee80211_sta_ht_cap *ht_info,
 457                               enum ieee80211_band band)
 458 {
 459         u16 max_bit_rate = 0;
 460         u8 rx_chains_num = priv->hw_params.rx_chains_num;
 461         u8 tx_chains_num = priv->hw_params.tx_chains_num;
 462
 463         ht_info->cap = 0;
 464         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
 465
 466         ht_info->ht_supported = true;
 467
 468         if (priv->cfg->ht_greenfield_support)
 469                 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
 470         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
 471         max_bit_rate = MAX_BIT_RATE_20_MHZ;
 472         if (priv->hw_params.ht40_channel & BIT(band)) {
 473                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 474                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
 475                 ht_info->mcs.rx_mask[4] = 0x01;
 476                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
 477         }
 478
 479         if (priv->cfg->mod_params->amsdu_size_8K)
 480                 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
 481
 482         ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
 483         ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
 484
 485         ht_info->mcs.rx_mask[0] = 0xFF;
 486         if (rx_chains_num >= 2)
 487                 ht_info->mcs.rx_mask[1] = 0xFF;
 488         if (rx_chains_num >= 3)
 489                 ht_info->mcs.rx_mask[2] = 0xFF;
 490
 491         /* Highest supported Rx data rate */
 492         max_bit_rate *= rx_chains_num;
 493         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
 494         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
 495
 496         /* Tx MCS capabilities */
 497         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 498         if (tx_chains_num != rx_chains_num) {
 499                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
 500                 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
 501                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
 502         }
 503 }
 504
 505 /**
 506  * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
 507  */
 508 int iwlcore_init_geos(struct iwl_priv *priv)
 509 {
 510         struct iwl_channel_info *ch;
 511         struct ieee80211_supported_band *sband;
 512         struct ieee80211_channel *channels;
 513         struct ieee80211_channel *geo_ch;
 514         struct ieee80211_rate *rates;
 515         int i = 0;
 516
 517         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
 518             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
 519                 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
 520                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
 521                 return 0;
 522         }
 523
 524         channels = kzalloc(sizeof(struct ieee80211_channel) *
 525                            priv->channel_count, GFP_KERNEL);
 526         if (!channels)
 527                 return -ENOMEM;
 528
 529         rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
 530                         GFP_KERNEL);
 531         if (!rates) {
 532                 kfree(channels);
 533                 return -ENOMEM;
 534         }
 535
 536         /* 5.2GHz channels start after the 2.4GHz channels */
 537         sband = &priv->bands[IEEE80211_BAND_5GHZ];
 538         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
 539         /* just OFDM */
 540         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
 541         sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
 542
 543         if (priv->cfg->sku & IWL_SKU_N)
 544                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
 545                                          IEEE80211_BAND_5GHZ);
 546
 547         sband = &priv->bands[IEEE80211_BAND_2GHZ];
 548         sband->channels = channels;
 549         /* OFDM & CCK */
 550         sband->bitrates = rates;
 551         sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
 552
 553         if (priv->cfg->sku & IWL_SKU_N)
 554                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
 555                                          IEEE80211_BAND_2GHZ);
 556
 557         priv->ieee_channels = channels;
 558         priv->ieee_rates = rates;
 559
 560         for (i = 0;  i < priv->channel_count; i++) {
 561                 ch = &priv->channel_info[i];
 562
 563                 /* FIXME: might be removed if scan is OK */
 564                 if (!is_channel_valid(ch))
 565                         continue;
 566
 567                 if (is_channel_a_band(ch))
 568                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
 569                 else
 570                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
 571
 572                 geo_ch = &sband->channels[sband->n_channels++];
 573
 574                 geo_ch->center_freq =
 575                                 ieee80211_channel_to_frequency(ch->channel);
 576                 geo_ch->max_power = ch->max_power_avg;
 577                 geo_ch->max_antenna_gain = 0xff;
 578                 geo_ch->hw_value = ch->channel;
 579
 580                 if (is_channel_valid(ch)) {
 581                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
 582                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
 583
 584                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
 585                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
 586
 587                         if (ch->flags & EEPROM_CHANNEL_RADAR)
 588                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
 589
 590                         geo_ch->flags |= ch->ht40_extension_channel;
 591
 592                         if (ch->max_power_avg > priv->tx_power_device_lmt)
 593                                 priv->tx_power_device_lmt = ch->max_power_avg;
 594                 } else {
 595                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
 596                 }
 597
 598                 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
 599                                 ch->channel, geo_ch->center_freq,
 600                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
 601                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
 602                                 "restricted" : "valid",
 603                                  geo_ch->flags);
 604         }
 605
 606         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
 607              priv->cfg->sku & IWL_SKU_A) {
 608                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
 609                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
 610                            priv->pci_dev->device,
 611                            priv->pci_dev->subsystem_device);
 612                 priv->cfg->sku &= ~IWL_SKU_A;
 613         }
 614
 615         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
 616                    priv->bands[IEEE80211_BAND_2GHZ].n_channels,
 617                    priv->bands[IEEE80211_BAND_5GHZ].n_channels);
 618
 619         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
 620
 621         return 0;
 622 }
 623 EXPORT_SYMBOL(iwlcore_init_geos);
 624
 625 /*
 626  * iwlcore_free_geos - undo allocations in iwlcore_init_geos
 627  */
 628 void iwlcore_free_geos(struct iwl_priv *priv)
 629 {
 630         kfree(priv->ieee_channels);
 631         kfree(priv->ieee_rates);
 632         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
 633 }
 634 EXPORT_SYMBOL(iwlcore_free_geos);
 635
 636 /*
 637  *  iwlcore_rts_tx_cmd_flag: Set rts/cts. 3945 and 4965 only share this
 638  *  function.
 639  */
 640 void iwlcore_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
 641                                 __le32 *tx_flags)
 642 {
 643         if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
 644                 *tx_flags |= TX_CMD_FLG_RTS_MSK;
 645                 *tx_flags &= ~TX_CMD_FLG_CTS_MSK;
 646         } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 647                 *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
 648                 *tx_flags |= TX_CMD_FLG_CTS_MSK;
 649         }
 650 }
 651 EXPORT_SYMBOL(iwlcore_rts_tx_cmd_flag);
 652
 653 static bool is_single_rx_stream(struct iwl_priv *priv)
 654 {
 655         return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
 656                priv->current_ht_config.single_chain_sufficient;
 657 }
 658
 659 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
 660                                    enum ieee80211_band band,
 661                                    u16 channel, u8 extension_chan_offset)
 662 {
 663         const struct iwl_channel_info *ch_info;
 664
 665         ch_info = iwl_get_channel_info(priv, band, channel);
 666         if (!is_channel_valid(ch_info))
 667                 return 0;
 668
 669         if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
 670                 return !(ch_info->ht40_extension_channel &
 671                                         IEEE80211_CHAN_NO_HT40PLUS);
 672         else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
 673                 return !(ch_info->ht40_extension_channel &
 674                                         IEEE80211_CHAN_NO_HT40MINUS);
 675
 676         return 0;
 677 }
 678
 679 u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
 680                          struct ieee80211_sta_ht_cap *sta_ht_inf)
 681 {
 682         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
 683
 684         if (!ht_conf->is_ht || !ht_conf->is_40mhz)
 685                 return 0;
 686
 687         /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
 688          * the bit will not set if it is pure 40MHz case
 689          */
 690         if (sta_ht_inf) {
 691                 if (!sta_ht_inf->ht_supported)
 692                         return 0;
 693         }
 694 #ifdef CONFIG_IWLWIFI_DEBUG
 695         if (priv->disable_ht40)
 696                 return 0;
 697 #endif
 698         return iwl_is_channel_extension(priv, priv->band,
 699                         le16_to_cpu(priv->staging_rxon.channel),
 700                         ht_conf->extension_chan_offset);
 701 }
 702 EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
 703
 704 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
 705 {
 706         u16 new_val = 0;
 707         u16 beacon_factor = 0;
 708
 709         beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
 710         new_val = beacon_val / beacon_factor;
 711
 712         if (!new_val)
 713                 new_val = max_beacon_val;
 714
 715         return new_val;
 716 }
 717
 718 void iwl_setup_rxon_timing(struct iwl_priv *priv)
 719 {
 720         u64 tsf;
 721         s32 interval_tm, rem;
 722         unsigned long flags;
 723         struct ieee80211_conf *conf = NULL;
 724         u16 beacon_int;
 725
 726         conf = ieee80211_get_hw_conf(priv->hw);
 727
 728         spin_lock_irqsave(&priv->lock, flags);
 729         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 730         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 731
 732         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 733                 beacon_int = priv->beacon_int;
 734                 priv->rxon_timing.atim_window = 0;
 735         } else {
 736                 beacon_int = priv->vif->bss_conf.beacon_int;
 737
 738                 /* TODO: we need to get atim_window from upper stack
 739                  * for now we set to 0 */
 740                 priv->rxon_timing.atim_window = 0;
 741         }
 742
 743         beacon_int = iwl_adjust_beacon_interval(beacon_int,
 744                                 priv->hw_params.max_beacon_itrvl * 1024);
 745         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 746
 747         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 748         interval_tm = beacon_int * 1024;
 749         rem = do_div(tsf, interval_tm);
 750         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 751
 752         spin_unlock_irqrestore(&priv->lock, flags);
 753         IWL_DEBUG_ASSOC(priv,
 754                         "beacon interval %d beacon timer %d beacon tim %d\n",
 755                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 756                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 757                         le16_to_cpu(priv->rxon_timing.atim_window));
 758 }
 759 EXPORT_SYMBOL(iwl_setup_rxon_timing);
 760
 761 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 762 {
 763         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 764
 765         if (hw_decrypt)
 766                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 767         else
 768                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 769
 770 }
 771 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
 772
 773 /**
 774  * iwl_check_rxon_cmd - validate RXON structure is valid
 775  *
 776  * NOTE:  This is really only useful during development and can eventually
 777  * be #ifdef'd out once the driver is stable and folks aren't actively
 778  * making changes
 779  */
 780 int iwl_check_rxon_cmd(struct iwl_priv *priv)
 781 {
 782         int error = 0;
 783         int counter = 1;
 784         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 785
 786         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 787                 error |= le32_to_cpu(rxon->flags &
 788                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 789                                  RXON_FLG_RADAR_DETECT_MSK));
 790                 if (error)
 791                         IWL_WARN(priv, "check 24G fields %d | %d\n",
 792                                     counter++, error);
 793         } else {
 794                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 795                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 796                 if (error)
 797                         IWL_WARN(priv, "check 52 fields %d | %d\n",
 798                                     counter++, error);
 799                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 800                 if (error)
 801                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
 802                                     counter++, error);
 803         }
 804         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 805         if (error)
 806                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
 807
 808         /* make sure basic rates 6Mbps and 1Mbps are supported */
 809         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 810                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 811         if (error)
 812                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
 813
 814         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 815         if (error)
 816                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
 817
 818         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 819                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 820         if (error)
 821                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
 822                             counter++, error);
 823
 824         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 825                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 826         if (error)
 827                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
 828                             counter++, error);
 829
 830         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 831                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 832         if (error)
 833                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
 834                             counter++, error);
 835
 836         if (error)
 837                 IWL_WARN(priv, "Tuning to channel %d\n",
 838                             le16_to_cpu(rxon->channel));
 839
 840         if (error) {
 841                 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
 842                 return -1;
 843         }
 844         return 0;
 845 }
 846 EXPORT_SYMBOL(iwl_check_rxon_cmd);
 847
 848 /**
 849  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 850  * @priv: staging_rxon is compared to active_rxon
 851  *
 852  * If the RXON structure is changing enough to require a new tune,
 853  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 854  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 855  */
 856 int iwl_full_rxon_required(struct iwl_priv *priv)
 857 {
 858
 859         /* These items are only settable from the full RXON command */
 860         if (!(iwl_is_associated(priv)) ||
 861             compare_ether_addr(priv->staging_rxon.bssid_addr,
 862                                priv->active_rxon.bssid_addr) ||
 863             compare_ether_addr(priv->staging_rxon.node_addr,
 864                                priv->active_rxon.node_addr) ||
 865             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 866                                priv->active_rxon.wlap_bssid_addr) ||
 867             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 868             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 869             (priv->staging_rxon.air_propagation !=
 870              priv->active_rxon.air_propagation) ||
 871             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 872              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 873             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 874              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 875             (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
 876              priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
 877             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 878                 return 1;
 879
 880         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 881          * be updated with the RXON_ASSOC command -- however only some
 882          * flag transitions are allowed using RXON_ASSOC */
 883
 884         /* Check if we are not switching bands */
 885         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 886             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 887                 return 1;
 888
 889         /* Check if we are switching association toggle */
 890         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 891                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 892                 return 1;
 893
 894         return 0;
 895 }
 896 EXPORT_SYMBOL(iwl_full_rxon_required);
 897
 898 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 899 {
 900         /*
 901          * Assign the lowest rate -- should really get this from
 902          * the beacon skb from mac80211.
 903          */
 904         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 905                 return IWL_RATE_1M_PLCP;
 906         else
 907                 return IWL_RATE_6M_PLCP;
 908 }
 909 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
 910
 911 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
 912 {
 913         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 914
 915         if (!ht_conf->is_ht) {
 916                 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
 917                         RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
 918                         RXON_FLG_HT40_PROT_MSK |
 919                         RXON_FLG_HT_PROT_MSK);
 920                 return;
 921         }
 922
 923         /* FIXME: if the definition of ht_protection changed, the "translation"
 924          * will be needed for rxon->flags
 925          */
 926         rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
 927
 928         /* Set up channel bandwidth:
 929          * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
 930         /* clear the HT channel mode before set the mode */
 931         rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
 932                          RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
 933         if (iwl_is_ht40_tx_allowed(priv, NULL)) {
 934                 /* pure ht40 */
 935                 if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
 936                         rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
 937                         /* Note: control channel is opposite of extension channel */
 938                         switch (ht_conf->extension_chan_offset) {
 939                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 940                                 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 941                                 break;
 942                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 943                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 944                                 break;
 945                         }
 946                 } else {
 947                         /* Note: control channel is opposite of extension channel */
 948                         switch (ht_conf->extension_chan_offset) {
 949                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 950                                 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
 951                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
 952                                 break;
 953                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 954                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
 955                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
 956                                 break;
 957                         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
 958                         default:
 959                                 /* channel location only valid if in Mixed mode */
 960                                 IWL_ERR(priv, "invalid extension channel offset\n");
 961                                 break;
 962                         }
 963                 }
 964         } else {
 965                 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
 966         }
 967
 968         if (priv->cfg->ops->hcmd->set_rxon_chain)
 969                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
 970
 971         IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
 972                         "extension channel offset 0x%x\n",
 973                         le32_to_cpu(rxon->flags), ht_conf->ht_protection,
 974                         ht_conf->extension_chan_offset);
 975         return;
 976 }
 977 EXPORT_SYMBOL(iwl_set_rxon_ht);
 978
 979 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
 980 #define IWL_NUM_RX_CHAINS_SINGLE        2
 981 #define IWL_NUM_IDLE_CHAINS_DUAL        2
 982 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
 983
 984 /*
 985  * Determine how many receiver/antenna chains to use.
 986  *
 987  * More provides better reception via diversity.  Fewer saves power
 988  * at the expense of throughput, but only when not in powersave to
 989  * start with.
 990  *
 991  * MIMO (dual stream) requires at least 2, but works better with 3.
 992  * This does not determine *which* chains to use, just how many.
 993  */
 994 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 995 {
 996         /* # of Rx chains to use when expecting MIMO. */
 997         if (is_single_rx_stream(priv))
 998                 return IWL_NUM_RX_CHAINS_SINGLE;
 999         else
1000                 return IWL_NUM_RX_CHAINS_MULTIPLE;
1001 }
1002
1003 /*
1004  * When we are in power saving mode, unless device support spatial
1005  * multiplexing power save, use the active count for rx chain count.
1006  */
1007 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
1008 {
1009         /* # Rx chains when idling, depending on SMPS mode */
1010         switch (priv->current_ht_config.smps) {
1011         case IEEE80211_SMPS_STATIC:
1012         case IEEE80211_SMPS_DYNAMIC:
1013                 return IWL_NUM_IDLE_CHAINS_SINGLE;
1014         case IEEE80211_SMPS_OFF:
1015                 return active_cnt;
1016         default:
1017                 WARN(1, "invalid SMPS mode %d",
1018                      priv->current_ht_config.smps);
1019                 return active_cnt;
1020         }
1021 }
1022
1023 /* up to 4 chains */
1024 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
1025 {
1026         u8 res;
1027         res = (chain_bitmap & BIT(0)) >> 0;
1028         res += (chain_bitmap & BIT(1)) >> 1;
1029         res += (chain_bitmap & BIT(2)) >> 2;
1030         res += (chain_bitmap & BIT(3)) >> 3;
1031         return res;
1032 }
1033
1034 /**
1035  * iwl_is_monitor_mode - Determine if interface in monitor mode
1036  *
1037  * priv->iw_mode is set in add_interface, but add_interface is
1038  * never called for monitor mode. The only way mac80211 informs us about
1039  * monitor mode is through configuring filters (call to configure_filter).
1040  */
1041 bool iwl_is_monitor_mode(struct iwl_priv *priv)
1042 {
1043         return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1044 }
1045 EXPORT_SYMBOL(iwl_is_monitor_mode);
1046
1047 /**
1048  * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1049  *
1050  * Selects how many and which Rx receivers/antennas/chains to use.
1051  * This should not be used for scan command ... it puts data in wrong place.
1052  */
1053 void iwl_set_rxon_chain(struct iwl_priv *priv)
1054 {
1055         bool is_single = is_single_rx_stream(priv);
1056         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1057         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1058         u32 active_chains;
1059         u16 rx_chain;
1060
1061         /* Tell uCode which antennas are actually connected.
1062          * Before first association, we assume all antennas are connected.
1063          * Just after first association, iwl_chain_noise_calibration()
1064          *    checks which antennas actually *are* connected. */
1065          if (priv->chain_noise_data.active_chains)
1066                 active_chains = priv->chain_noise_data.active_chains;
1067         else
1068                 active_chains = priv->hw_params.valid_rx_ant;
1069
1070         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1071
1072         /* How many receivers should we use? */
1073         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1074         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1075
1076
1077         /* correct rx chain count according hw settings
1078          * and chain noise calibration
1079          */
1080         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1081         if (valid_rx_cnt < active_rx_cnt)
1082                 active_rx_cnt = valid_rx_cnt;
1083
1084         if (valid_rx_cnt < idle_rx_cnt)
1085                 idle_rx_cnt = valid_rx_cnt;
1086
1087         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1088         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
1089
1090         /* copied from 'iwl_bg_request_scan()' */
1091         /* Force use of chains B and C (0x6) for Rx for 4965
1092          * Avoid A (0x1) because of its off-channel reception on A-band.
1093          * MIMO is not used here, but value is required */
1094         if (iwl_is_monitor_mode(priv) &&
1095             !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1096             ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1097                 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1098                 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1099                 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1100                 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1101         }
1102
1103         priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1104
1105         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1106                 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1107         else
1108                 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1109
1110         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1111                         priv->staging_rxon.rx_chain,
1112                         active_rx_cnt, idle_rx_cnt);
1113
1114         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1115                 active_rx_cnt < idle_rx_cnt);
1116 }
1117 EXPORT_SYMBOL(iwl_set_rxon_chain);
1118
1119 /**
1120  * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1121  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1122  * @channel: Any channel valid for the requested phymode
1123
1124  * In addition to setting the staging RXON, priv->phymode is also set.
1125  *
1126  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
1127  * in the staging RXON flag structure based on the phymode
1128  */
1129 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1130 {
1131         enum ieee80211_band band = ch->band;
1132         u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1133
1134         if (!iwl_get_channel_info(priv, band, channel)) {
1135                 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1136                                channel, band);
1137                 return -EINVAL;
1138         }
1139
1140         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1141             (priv->band == band))
1142                 return 0;
1143
1144         priv->staging_rxon.channel = cpu_to_le16(channel);
1145         if (band == IEEE80211_BAND_5GHZ)
1146                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1147         else
1148                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1149
1150         priv->band = band;
1151
1152         IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1153
1154         return 0;
1155 }
1156 EXPORT_SYMBOL(iwl_set_rxon_channel);
1157
1158 void iwl_set_flags_for_band(struct iwl_priv *priv,
1159                             enum ieee80211_band band)
1160 {
1161         if (band == IEEE80211_BAND_5GHZ) {
1162                 priv->staging_rxon.flags &=
1163                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1164                       | RXON_FLG_CCK_MSK);
1165                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1166         } else {
1167                 /* Copied from iwl_post_associate() */
1168                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1169                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1170                 else
1171                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1172
1173                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1174                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1175
1176                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1177                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1178                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1179         }
1180 }
1181
1182 /*
1183  * initialize rxon structure with default values from eeprom
1184  */
1185 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1186 {
1187         const struct iwl_channel_info *ch_info;
1188
1189         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1190
1191         switch (mode) {
1192         case NL80211_IFTYPE_AP:
1193                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1194                 break;
1195
1196         case NL80211_IFTYPE_STATION:
1197                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1198                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1199                 break;
1200
1201         case NL80211_IFTYPE_ADHOC:
1202                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1203                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1204                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1205                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1206                 break;
1207
1208         default:
1209                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1210                 break;
1211         }
1212
1213 #if 0
1214         /* TODO:  Figure out when short_preamble would be set and cache from
1215          * that */
1216         if (!hw_to_local(priv->hw)->short_preamble)
1217                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1218         else
1219                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1220 #endif
1221
1222         ch_info = iwl_get_channel_info(priv, priv->band,
1223                                        le16_to_cpu(priv->active_rxon.channel));
1224
1225         if (!ch_info)
1226                 ch_info = &priv->channel_info[0];
1227
1228         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1229         priv->band = ch_info->band;
1230
1231         iwl_set_flags_for_band(priv, priv->band);
1232
1233         priv->staging_rxon.ofdm_basic_rates =
1234             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1235         priv->staging_rxon.cck_basic_rates =
1236             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1237
1238         /* clear both MIX and PURE40 mode flag */
1239         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1240                                         RXON_FLG_CHANNEL_MODE_PURE_40);
1241         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1242         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1243         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1244         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1245         priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1246 }
1247 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1248
1249 static void iwl_set_rate(struct iwl_priv *priv)
1250 {
1251         const struct ieee80211_supported_band *hw = NULL;
1252         struct ieee80211_rate *rate;
1253         int i;
1254
1255         hw = iwl_get_hw_mode(priv, priv->band);
1256         if (!hw) {
1257                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1258                 return;
1259         }
1260
1261         priv->active_rate = 0;
1262
1263         for (i = 0; i < hw->n_bitrates; i++) {
1264                 rate = &(hw->bitrates[i]);
1265                 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
1266                         priv->active_rate |= (1 << rate->hw_value);
1267         }
1268
1269         IWL_DEBUG_RATE(priv, "Set active_rate = %0x\n", priv->active_rate);
1270
1271         priv->staging_rxon.cck_basic_rates =
1272             (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1273
1274         priv->staging_rxon.ofdm_basic_rates =
1275            (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1276 }
1277
1278 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1279 {
1280         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1281         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1282         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1283
1284         if (priv->switch_rxon.switch_in_progress) {
1285                 if (!le32_to_cpu(csa->status) &&
1286                     (csa->channel == priv->switch_rxon.channel)) {
1287                         rxon->channel = csa->channel;
1288                         priv->staging_rxon.channel = csa->channel;
1289                         IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
1290                               le16_to_cpu(csa->channel));
1291                 } else
1292                         IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
1293                               le16_to_cpu(csa->channel));
1294
1295                 priv->switch_rxon.switch_in_progress = false;
1296         }
1297 }
1298 EXPORT_SYMBOL(iwl_rx_csa);
1299
1300 #ifdef CONFIG_IWLWIFI_DEBUG
1301 void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1302 {
1303         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1304
1305         IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1306         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1307         IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1308         IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1309         IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1310                         le32_to_cpu(rxon->filter_flags));
1311         IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1312         IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1313                         rxon->ofdm_basic_rates);
1314         IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1315         IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1316         IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1317         IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1318 }
1319 EXPORT_SYMBOL(iwl_print_rx_config_cmd);
1320 #endif
1321 /**
1322  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1323  */
1324 void iwl_irq_handle_error(struct iwl_priv *priv)
1325 {
1326         /* Set the FW error flag -- cleared on iwl_down */
1327         set_bit(STATUS_FW_ERROR, &priv->status);
1328
1329         /* Cancel currently queued command. */
1330         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1331
1332         priv->cfg->ops->lib->dump_nic_error_log(priv);
1333         if (priv->cfg->ops->lib->dump_csr)
1334                 priv->cfg->ops->lib->dump_csr(priv);
1335         if (priv->cfg->ops->lib->dump_fh)
1336                 priv->cfg->ops->lib->dump_fh(priv, NULL, false);
1337         priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false);
1338 #ifdef CONFIG_IWLWIFI_DEBUG
1339         if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS)
1340                 iwl_print_rx_config_cmd(priv);
1341 #endif
1342
1343         wake_up_interruptible(&priv->wait_command_queue);
1344
1345         /* Keep the restart process from trying to send host
1346          * commands by clearing the INIT status bit */
1347         clear_bit(STATUS_READY, &priv->status);
1348
1349         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1350                 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1351                           "Restarting adapter due to uCode error.\n");
1352
1353                 if (priv->cfg->mod_params->restart_fw)
1354                         queue_work(priv->workqueue, &priv->restart);
1355         }
1356 }
1357 EXPORT_SYMBOL(iwl_irq_handle_error);
1358
1359 static int iwl_apm_stop_master(struct iwl_priv *priv)
1360 {
1361         int ret = 0;
1362
1363         /* stop device's busmaster DMA activity */
1364         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
1365
1366         ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
1367                         CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
1368         if (ret)
1369                 IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n");
1370
1371         IWL_DEBUG_INFO(priv, "stop master\n");
1372
1373         return ret;
1374 }
1375
1376 void iwl_apm_stop(struct iwl_priv *priv)
1377 {
1378         IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n");
1379
1380         /* Stop device's DMA activity */
1381         iwl_apm_stop_master(priv);
1382
1383         /* Reset the entire device */
1384         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1385
1386         udelay(10);
1387
1388         /*
1389          * Clear "initialization complete" bit to move adapter from
1390          * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
1391          */
1392         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1393 }
1394 EXPORT_SYMBOL(iwl_apm_stop);
1395
1396
1397 /*
1398  * Start up NIC's basic functionality after it has been reset
1399  * (e.g. after platform boot, or shutdown via iwl_apm_stop())
1400  * NOTE:  This does not load uCode nor start the embedded processor
1401  */
1402 int iwl_apm_init(struct iwl_priv *priv)
1403 {
1404         int ret = 0;
1405         u16 lctl;
1406
1407         IWL_DEBUG_INFO(priv, "Init card's basic functions\n");
1408
1409         /*
1410          * Use "set_bit" below rather than "write", to preserve any hardware
1411          * bits already set by default after reset.
1412          */
1413
1414         /* Disable L0S exit timer (platform NMI Work/Around) */
1415         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1416                           CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
1417
1418         /*
1419          * Disable L0s without affecting L1;
1420          *  don't wait for ICH L0s (ICH bug W/A)
1421          */
1422         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1423                           CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
1424
1425         /* Set FH wait threshold to maximum (HW error during stress W/A) */
1426         iwl_set_bit(priv, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
1427
1428         /*
1429          * Enable HAP INTA (interrupt from management bus) to
1430          * wake device's PCI Express link L1a -> L0s
1431          * NOTE:  This is no-op for 3945 (non-existant bit)
1432          */
1433         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1434                                     CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
1435
1436         /*
1437          * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
1438          * Check if BIOS (or OS) enabled L1-ASPM on this device.
1439          * If so (likely), disable L0S, so device moves directly L0->L1;
1440          *    costs negligible amount of power savings.
1441          * If not (unlikely), enable L0S, so there is at least some
1442          *    power savings, even without L1.
1443          */
1444         if (priv->cfg->set_l0s) {
1445                 lctl = iwl_pcie_link_ctl(priv);
1446                 if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
1447                                         PCI_CFG_LINK_CTRL_VAL_L1_EN) {
1448                         /* L1-ASPM enabled; disable(!) L0S  */
1449                         iwl_set_bit(priv, CSR_GIO_REG,
1450                                         CSR_GIO_REG_VAL_L0S_ENABLED);
1451                         IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n");
1452                 } else {
1453                         /* L1-ASPM disabled; enable(!) L0S */
1454                         iwl_clear_bit(priv, CSR_GIO_REG,
1455                                         CSR_GIO_REG_VAL_L0S_ENABLED);
1456                         IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n");
1457                 }
1458         }
1459
1460         /* Configure analog phase-lock-loop before activating to D0A */
1461         if (priv->cfg->pll_cfg_val)
1462                 iwl_set_bit(priv, CSR_ANA_PLL_CFG, priv->cfg->pll_cfg_val);
1463
1464         /*
1465          * Set "initialization complete" bit to move adapter from
1466          * D0U* --> D0A* (powered-up active) state.
1467          */
1468         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1469
1470         /*
1471          * Wait for clock stabilization; once stabilized, access to
1472          * device-internal resources is supported, e.g. iwl_write_prph()
1473          * and accesses to uCode SRAM.
1474          */
1475         ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
1476                         CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
1477                         CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1478         if (ret < 0) {
1479                 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
1480                 goto out;
1481         }
1482
1483         /*
1484          * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
1485          * BSM (Boostrap State Machine) is only in 3945 and 4965;
1486          * later devices (i.e. 5000 and later) have non-volatile SRAM,
1487          * and don't need BSM to restore data after power-saving sleep.
1488          *
1489          * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
1490          * do not disable clocks.  This preserves any hardware bits already
1491          * set by default in "CLK_CTRL_REG" after reset.
1492          */
1493         if (priv->cfg->use_bsm)
1494                 iwl_write_prph(priv, APMG_CLK_EN_REG,
1495                         APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
1496         else
1497                 iwl_write_prph(priv, APMG_CLK_EN_REG,
1498                         APMG_CLK_VAL_DMA_CLK_RQT);
1499         udelay(20);
1500
1501         /* Disable L1-Active */
1502         iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
1503                           APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
1504
1505 out:
1506         return ret;
1507 }
1508 EXPORT_SYMBOL(iwl_apm_init);
1509
1510
1511
1512 void iwl_configure_filter(struct ieee80211_hw *hw,
1513                           unsigned int changed_flags,
1514                           unsigned int *total_flags,
1515                           u64 multicast)
1516 {
1517         struct iwl_priv *priv = hw->priv;
1518         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1519
1520         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1521                         changed_flags, *total_flags);
1522
1523         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1524                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1525                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
1526                 else
1527                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1528         }
1529         if (changed_flags & FIF_ALLMULTI) {
1530                 if (*total_flags & FIF_ALLMULTI)
1531                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1532                 else
1533                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1534         }
1535         if (changed_flags & FIF_CONTROL) {
1536                 if (*total_flags & FIF_CONTROL)
1537                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1538                 else
1539                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1540         }
1541         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1542                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1543                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1544                 else
1545                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1546         }
1547
1548         /* We avoid iwl_commit_rxon here to commit the new filter flags
1549          * since mac80211 will call ieee80211_hw_config immediately.
1550          * (mc_list is not supported at this time). Otherwise, we need to
1551          * queue a background iwl_commit_rxon work.
1552          */
1553
1554         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1555                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1556 }
1557 EXPORT_SYMBOL(iwl_configure_filter);
1558
1559 int iwl_set_hw_params(struct iwl_priv *priv)
1560 {
1561         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1562         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1563         if (priv->cfg->mod_params->amsdu_size_8K)
1564                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
1565         else
1566                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
1567
1568         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1569
1570         if (priv->cfg->mod_params->disable_11n)
1571                 priv->cfg->sku &= ~IWL_SKU_N;
1572
1573         /* Device-specific setup */
1574         return priv->cfg->ops->lib->set_hw_params(priv);
1575 }
1576 EXPORT_SYMBOL(iwl_set_hw_params);
1577
1578 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1579 {
1580         int ret = 0;
1581         s8 prev_tx_power = priv->tx_power_user_lmt;
1582
1583         if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1584                 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1585                          tx_power,
1586                          IWL_TX_POWER_TARGET_POWER_MIN);
1587                 return -EINVAL;
1588         }
1589
1590         if (tx_power > priv->tx_power_device_lmt) {
1591                 IWL_WARN(priv,
1592                         "Requested user TXPOWER %d above upper limit %d.\n",
1593                          tx_power, priv->tx_power_device_lmt);
1594                 return -EINVAL;
1595         }
1596
1597         if (priv->tx_power_user_lmt != tx_power)
1598                 force = true;
1599
1600         /* if nic is not up don't send command */
1601         if (iwl_is_ready_rf(priv)) {
1602                 priv->tx_power_user_lmt = tx_power;
1603                 if (force && priv->cfg->ops->lib->send_tx_power)
1604                         ret = priv->cfg->ops->lib->send_tx_power(priv);
1605                 else if (!priv->cfg->ops->lib->send_tx_power)
1606                         ret = -EOPNOTSUPP;
1607                 /*
1608                  * if fail to set tx_power, restore the orig. tx power
1609                  */
1610                 if (ret)
1611                         priv->tx_power_user_lmt = prev_tx_power;
1612         }
1613
1614         /*
1615          * Even this is an async host command, the command
1616          * will always report success from uCode
1617          * So once driver can placing the command into the queue
1618          * successfully, driver can use priv->tx_power_user_lmt
1619          * to reflect the current tx power
1620          */
1621         return ret;
1622 }
1623 EXPORT_SYMBOL(iwl_set_tx_power);
1624
1625 irqreturn_t iwl_isr_legacy(int irq, void *data)
1626 {
1627         struct iwl_priv *priv = data;
1628         u32 inta, inta_mask;
1629         u32 inta_fh;
1630         if (!priv)
1631                 return IRQ_NONE;
1632
1633         spin_lock(&priv->lock);
1634
1635         /* Disable (but don't clear!) interrupts here to avoid
1636          *    back-to-back ISRs and sporadic interrupts from our NIC.
1637          * If we have something to service, the tasklet will re-enable ints.
1638          * If we *don't* have something, we'll re-enable before leaving here. */
1639         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1640         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1641
1642         /* Discover which interrupts are active/pending */
1643         inta = iwl_read32(priv, CSR_INT);
1644         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1645
1646         /* Ignore interrupt if there's nothing in NIC to service.
1647          * This may be due to IRQ shared with another device,
1648          * or due to sporadic interrupts thrown from our NIC. */
1649         if (!inta && !inta_fh) {
1650                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1651                 goto none;
1652         }
1653
1654         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1655                 /* Hardware disappeared. It might have already raised
1656                  * an interrupt */
1657                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1658                 goto unplugged;
1659         }
1660
1661         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1662                       inta, inta_mask, inta_fh);
1663
1664         inta &= ~CSR_INT_BIT_SCD;
1665
1666         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1667         if (likely(inta || inta_fh))
1668                 tasklet_schedule(&priv->irq_tasklet);
1669
1670  unplugged:
1671         spin_unlock(&priv->lock);
1672         return IRQ_HANDLED;
1673
1674  none:
1675         /* re-enable interrupts here since we don't have anything to service. */
1676         /* only Re-enable if diabled by irq */
1677         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1678                 iwl_enable_interrupts(priv);
1679         spin_unlock(&priv->lock);
1680         return IRQ_NONE;
1681 }
1682 EXPORT_SYMBOL(iwl_isr_legacy);
1683
1684 int iwl_send_bt_config(struct iwl_priv *priv)
1685 {
1686         struct iwl_bt_cmd bt_cmd = {
1687                 .lead_time = BT_LEAD_TIME_DEF,
1688                 .max_kill = BT_MAX_KILL_DEF,
1689                 .kill_ack_mask = 0,
1690                 .kill_cts_mask = 0,
1691         };
1692
1693         if (!bt_coex_active)
1694                 bt_cmd.flags = BT_COEX_DISABLE;
1695         else
1696                 bt_cmd.flags = BT_COEX_ENABLE;
1697
1698         IWL_DEBUG_INFO(priv, "BT coex %s\n",
1699                 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
1700
1701         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1702                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
1703 }
1704 EXPORT_SYMBOL(iwl_send_bt_config);
1705
1706 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
1707 {
1708         struct iwl_statistics_cmd statistics_cmd = {
1709                 .configuration_flags =
1710                         clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
1711         };
1712
1713         if (flags & CMD_ASYNC)
1714                 return iwl_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD,
1715                                                sizeof(struct iwl_statistics_cmd),
1716                                                &statistics_cmd, NULL);
1717         else
1718                 return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
1719                                         sizeof(struct iwl_statistics_cmd),
1720                                         &statistics_cmd);
1721 }
1722 EXPORT_SYMBOL(iwl_send_statistics_request);
1723
1724 /**
1725  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
1726  *   using sample data 100 bytes apart.  If these sample points are good,
1727  *   it's a pretty good bet that everything between them is good, too.
1728  */
1729 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1730 {
1731         u32 val;
1732         int ret = 0;
1733         u32 errcnt = 0;
1734         u32 i;
1735
1736         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1737
1738         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1739                 /* read data comes through single port, auto-incr addr */
1740                 /* NOTE: Use the debugless read so we don't flood kernel log
1741                  * if IWL_DL_IO is set */
1742                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1743                         i + IWL49_RTC_INST_LOWER_BOUND);
1744                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1745                 if (val != le32_to_cpu(*image)) {
1746                         ret = -EIO;
1747                         errcnt++;
1748                         if (errcnt >= 3)
1749                                 break;
1750                 }
1751         }
1752
1753         return ret;
1754 }
1755
1756 /**
1757  * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1758  *     looking at all data.
1759  */
1760 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1761                                  u32 len)
1762 {
1763         u32 val;
1764         u32 save_len = len;
1765         int ret = 0;
1766         u32 errcnt;
1767
1768         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1769
1770         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1771                            IWL49_RTC_INST_LOWER_BOUND);
1772
1773         errcnt = 0;
1774         for (; len > 0; len -= sizeof(u32), image++) {
1775                 /* read data comes through single port, auto-incr addr */
1776                 /* NOTE: Use the debugless read so we don't flood kernel log
1777                  * if IWL_DL_IO is set */
1778                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1779                 if (val != le32_to_cpu(*image)) {
1780                         IWL_ERR(priv, "uCode INST section is invalid at "
1781                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
1782                                   save_len - len, val, le32_to_cpu(*image));
1783                         ret = -EIO;
1784                         errcnt++;
1785                         if (errcnt >= 20)
1786                                 break;
1787                 }
1788         }
1789
1790         if (!errcnt)
1791                 IWL_DEBUG_INFO(priv,
1792                     "ucode image in INSTRUCTION memory is good\n");
1793
1794         return ret;
1795 }
1796
1797 /**
1798  * iwl_verify_ucode - determine which instruction image is in SRAM,
1799  *    and verify its contents
1800  */
1801 int iwl_verify_ucode(struct iwl_priv *priv)
1802 {
1803         __le32 *image;
1804         u32 len;
1805         int ret;
1806
1807         /* Try bootstrap */
1808         image = (__le32 *)priv->ucode_boot.v_addr;
1809         len = priv->ucode_boot.len;
1810         ret = iwlcore_verify_inst_sparse(priv, image, len);
1811         if (!ret) {
1812                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
1813                 return 0;
1814         }
1815
1816         /* Try initialize */
1817         image = (__le32 *)priv->ucode_init.v_addr;
1818         len = priv->ucode_init.len;
1819         ret = iwlcore_verify_inst_sparse(priv, image, len);
1820         if (!ret) {
1821                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
1822                 return 0;
1823         }
1824
1825         /* Try runtime/protocol */
1826         image = (__le32 *)priv->ucode_code.v_addr;
1827         len = priv->ucode_code.len;
1828         ret = iwlcore_verify_inst_sparse(priv, image, len);
1829         if (!ret) {
1830                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
1831                 return 0;
1832         }
1833
1834         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1835
1836         /* Since nothing seems to match, show first several data entries in
1837          * instruction SRAM, so maybe visual inspection will give a clue.
1838          * Selection of bootstrap image (vs. other images) is arbitrary. */
1839         image = (__le32 *)priv->ucode_boot.v_addr;
1840         len = priv->ucode_boot.len;
1841         ret = iwl_verify_inst_full(priv, image, len);
1842
1843         return ret;
1844 }
1845 EXPORT_SYMBOL(iwl_verify_ucode);
1846
1847
1848 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1849 {
1850         struct iwl_ct_kill_config cmd;
1851         struct iwl_ct_kill_throttling_config adv_cmd;
1852         unsigned long flags;
1853         int ret = 0;
1854
1855         spin_lock_irqsave(&priv->lock, flags);
1856         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1857                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1858         spin_unlock_irqrestore(&priv->lock, flags);
1859         priv->thermal_throttle.ct_kill_toggle = false;
1860
1861         if (priv->cfg->support_ct_kill_exit) {
1862                 adv_cmd.critical_temperature_enter =
1863                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
1864                 adv_cmd.critical_temperature_exit =
1865                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
1866
1867                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1868                                        sizeof(adv_cmd), &adv_cmd);
1869                 if (ret)
1870                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1871                 else
1872                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1873                                         "succeeded, "
1874                                         "critical temperature enter is %d,"
1875                                         "exit is %d\n",
1876                                        priv->hw_params.ct_kill_threshold,
1877                                        priv->hw_params.ct_kill_exit_threshold);
1878         } else {
1879                 cmd.critical_temperature_R =
1880                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
1881
1882                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1883                                        sizeof(cmd), &cmd);
1884                 if (ret)
1885                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1886                 else
1887                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1888                                         "succeeded, "
1889                                         "critical temperature is %d\n",
1890                                         priv->hw_params.ct_kill_threshold);
1891         }
1892 }
1893 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
1894
1895
1896 /*
1897  * CARD_STATE_CMD
1898  *
1899  * Use: Sets the device's internal card state to enable, disable, or halt
1900  *
1901  * When in the 'enable' state the card operates as normal.
1902  * When in the 'disable' state, the card enters into a low power mode.
1903  * When in the 'halt' state, the card is shut down and must be fully
1904  * restarted to come back on.
1905  */
1906 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1907 {
1908         struct iwl_host_cmd cmd = {
1909                 .id = REPLY_CARD_STATE_CMD,
1910                 .len = sizeof(u32),
1911                 .data = &flags,
1912                 .flags = meta_flag,
1913         };
1914
1915         return iwl_send_cmd(priv, &cmd);
1916 }
1917
1918 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
1919                            struct iwl_rx_mem_buffer *rxb)
1920 {
1921 #ifdef CONFIG_IWLWIFI_DEBUG
1922         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1923         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
1924         IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
1925                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1926 #endif
1927 }
1928 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
1929
1930 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1931                                       struct iwl_rx_mem_buffer *rxb)
1932 {
1933         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1934         u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
1935         IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
1936                         "notification for %s:\n", len,
1937                         get_cmd_string(pkt->hdr.cmd));
1938         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
1939 }
1940 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
1941
1942 void iwl_rx_reply_error(struct iwl_priv *priv,
1943                         struct iwl_rx_mem_buffer *rxb)
1944 {
1945         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1946
1947         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
1948                 "seq 0x%04X ser 0x%08X\n",
1949                 le32_to_cpu(pkt->u.err_resp.error_type),
1950                 get_cmd_string(pkt->u.err_resp.cmd_id),
1951                 pkt->u.err_resp.cmd_id,
1952                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1953                 le32_to_cpu(pkt->u.err_resp.error_info));
1954 }
1955 EXPORT_SYMBOL(iwl_rx_reply_error);
1956
1957 void iwl_clear_isr_stats(struct iwl_priv *priv)
1958 {
1959         memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
1960 }
1961
1962 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
1963                            const struct ieee80211_tx_queue_params *params)
1964 {
1965         struct iwl_priv *priv = hw->priv;
1966         unsigned long flags;
1967         int q;
1968
1969         IWL_DEBUG_MAC80211(priv, "enter\n");
1970
1971         if (!iwl_is_ready_rf(priv)) {
1972                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1973                 return -EIO;
1974         }
1975
1976         if (queue >= AC_NUM) {
1977                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1978                 return 0;
1979         }
1980
1981         q = AC_NUM - 1 - queue;
1982
1983         spin_lock_irqsave(&priv->lock, flags);
1984
1985         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
1986         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
1987         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1988         priv->qos_data.def_qos_parm.ac[q].edca_txop =
1989                         cpu_to_le16((params->txop * 32));
1990
1991         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1992         priv->qos_data.qos_active = 1;
1993
1994         if (priv->iw_mode == NL80211_IFTYPE_AP)
1995                 iwl_activate_qos(priv, 1);
1996         else if (priv->assoc_id && iwl_is_associated(priv))
1997                 iwl_activate_qos(priv, 0);
1998
1999         spin_unlock_irqrestore(&priv->lock, flags);
2000
2001         IWL_DEBUG_MAC80211(priv, "leave\n");
2002         return 0;
2003 }
2004 EXPORT_SYMBOL(iwl_mac_conf_tx);
2005
2006 static void iwl_ht_conf(struct iwl_priv *priv,
2007                         struct ieee80211_bss_conf *bss_conf)
2008 {
2009         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2010         struct ieee80211_sta *sta;
2011
2012         IWL_DEBUG_MAC80211(priv, "enter: \n");
2013
2014         if (!ht_conf->is_ht)
2015                 return;
2016
2017         ht_conf->ht_protection =
2018                 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2019         ht_conf->non_GF_STA_present =
2020                 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2021
2022         ht_conf->single_chain_sufficient = false;
2023
2024         switch (priv->iw_mode) {
2025         case NL80211_IFTYPE_STATION:
2026                 rcu_read_lock();
2027                 sta = ieee80211_find_sta(priv->vif, priv->bssid);
2028                 if (sta) {
2029                         struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
2030                         int maxstreams;
2031
2032                         maxstreams = (ht_cap->mcs.tx_params &
2033                                       IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
2034                                         >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2035                         maxstreams += 1;
2036
2037                         if ((ht_cap->mcs.rx_mask[1] == 0) &&
2038                             (ht_cap->mcs.rx_mask[2] == 0))
2039                                 ht_conf->single_chain_sufficient = true;
2040                         if (maxstreams <= 1)
2041                                 ht_conf->single_chain_sufficient = true;
2042                 } else {
2043                         /*
2044                          * If at all, this can only happen through a race
2045                          * when the AP disconnects us while we're still
2046                          * setting up the connection, in that case mac80211
2047                          * will soon tell us about that.
2048                          */
2049                         ht_conf->single_chain_sufficient = true;
2050                 }
2051                 rcu_read_unlock();
2052                 break;
2053         case NL80211_IFTYPE_ADHOC:
2054                 ht_conf->single_chain_sufficient = true;
2055                 break;
2056         default:
2057                 break;
2058         }
2059
2060         IWL_DEBUG_MAC80211(priv, "leave\n");
2061 }
2062
2063 static inline void iwl_set_no_assoc(struct iwl_priv *priv)
2064 {
2065         priv->assoc_id = 0;
2066         iwl_led_disassociate(priv);
2067         /*
2068          * inform the ucode that there is no longer an
2069          * association and that no more packets should be
2070          * sent
2071          */
2072         priv->staging_rxon.filter_flags &=
2073                 ~RXON_FILTER_ASSOC_MSK;
2074         priv->staging_rxon.assoc_id = 0;
2075         iwlcore_commit_rxon(priv);
2076 }
2077
2078 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2079 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2080                           struct ieee80211_vif *vif,
2081                           struct ieee80211_bss_conf *bss_conf,
2082                           u32 changes)
2083 {
2084         struct iwl_priv *priv = hw->priv;
2085         int ret;
2086
2087         IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2088
2089         if (!iwl_is_alive(priv))
2090                 return;
2091
2092         mutex_lock(&priv->mutex);
2093
2094         if (changes & BSS_CHANGED_BEACON &&
2095             priv->iw_mode == NL80211_IFTYPE_AP) {
2096                 dev_kfree_skb(priv->ibss_beacon);
2097                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2098         }
2099
2100         if (changes & BSS_CHANGED_BEACON_INT) {
2101                 priv->beacon_int = bss_conf->beacon_int;
2102                 /* TODO: in AP mode, do something to make this take effect */
2103         }
2104
2105         if (changes & BSS_CHANGED_BSSID) {
2106                 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2107
2108                 /*
2109                  * If there is currently a HW scan going on in the
2110                  * background then we need to cancel it else the RXON
2111                  * below/in post_associate will fail.
2112                  */
2113                 if (iwl_scan_cancel_timeout(priv, 100)) {
2114                         IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2115                         IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2116                         mutex_unlock(&priv->mutex);
2117                         return;
2118                 }
2119
2120                 /* mac80211 only sets assoc when in STATION mode */
2121                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2122                     bss_conf->assoc) {
2123                         memcpy(priv->staging_rxon.bssid_addr,
2124                                bss_conf->bssid, ETH_ALEN);
2125
2126                         /* currently needed in a few places */
2127                         memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2128                 } else {
2129                         priv->staging_rxon.filter_flags &=
2130                                 ~RXON_FILTER_ASSOC_MSK;
2131                 }
2132
2133         }
2134
2135         /*
2136          * This needs to be after setting the BSSID in case
2137          * mac80211 decides to do both changes at once because
2138          * it will invoke post_associate.
2139          */
2140         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2141             changes & BSS_CHANGED_BEACON) {
2142                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2143
2144                 if (beacon)
2145                         iwl_mac_beacon_update(hw, beacon);
2146         }
2147
2148         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2149                 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2150                                    bss_conf->use_short_preamble);
2151                 if (bss_conf->use_short_preamble)
2152                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2153                 else
2154                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2155         }
2156
2157         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2158                 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2159                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2160                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2161                 else
2162                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2163         }
2164
2165         if (changes & BSS_CHANGED_BASIC_RATES) {
2166                 /* XXX use this information
2167                  *
2168                  * To do that, remove code from iwl_set_rate() and put something
2169                  * like this here:
2170                  *
2171                 if (A-band)
2172                         priv->staging_rxon.ofdm_basic_rates =
2173                                 bss_conf->basic_rates;
2174                 else
2175                         priv->staging_rxon.ofdm_basic_rates =
2176                                 bss_conf->basic_rates >> 4;
2177                         priv->staging_rxon.cck_basic_rates =
2178                                 bss_conf->basic_rates & 0xF;
2179                  */
2180         }
2181
2182         if (changes & BSS_CHANGED_HT) {
2183                 iwl_ht_conf(priv, bss_conf);
2184
2185                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2186                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2187         }
2188
2189         if (changes & BSS_CHANGED_ASSOC) {
2190                 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2191                 if (bss_conf->assoc) {
2192                         priv->assoc_id = bss_conf->aid;
2193                         priv->beacon_int = bss_conf->beacon_int;
2194                         priv->timestamp = bss_conf->timestamp;
2195                         priv->assoc_capability = bss_conf->assoc_capability;
2196
2197                         iwl_led_associate(priv);
2198
2199                         /*
2200                          * We have just associated, don't start scan too early
2201                          * leave time for EAPOL exchange to complete.
2202                          *
2203                          * XXX: do this in mac80211
2204                          */
2205                         priv->next_scan_jiffies = jiffies +
2206                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2207                         if (!iwl_is_rfkill(priv))
2208                                 priv->cfg->ops->lib->post_associate(priv);
2209                 } else
2210                         iwl_set_no_assoc(priv);
2211         }
2212
2213         if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2214                 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2215                                    changes);
2216                 ret = iwl_send_rxon_assoc(priv);
2217                 if (!ret) {
2218                         /* Sync active_rxon with latest change. */
2219                         memcpy((void *)&priv->active_rxon,
2220                                 &priv->staging_rxon,
2221                                 sizeof(struct iwl_rxon_cmd));
2222                 }
2223         }
2224
2225         if (changes & BSS_CHANGED_BEACON_ENABLED) {
2226                 if (vif->bss_conf.enable_beacon) {
2227                         memcpy(priv->staging_rxon.bssid_addr,
2228                                bss_conf->bssid, ETH_ALEN);
2229                         memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2230                         iwlcore_config_ap(priv);
2231                 } else
2232                         iwl_set_no_assoc(priv);
2233         }
2234
2235         mutex_unlock(&priv->mutex);
2236
2237         IWL_DEBUG_MAC80211(priv, "leave\n");
2238 }
2239 EXPORT_SYMBOL(iwl_bss_info_changed);
2240
2241 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2242 {
2243         struct iwl_priv *priv = hw->priv;
2244         unsigned long flags;
2245         __le64 timestamp;
2246
2247         IWL_DEBUG_MAC80211(priv, "enter\n");
2248
2249         if (!iwl_is_ready_rf(priv)) {
2250                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2251                 return -EIO;
2252         }
2253
2254         spin_lock_irqsave(&priv->lock, flags);
2255
2256         if (priv->ibss_beacon)
2257                 dev_kfree_skb(priv->ibss_beacon);
2258
2259         priv->ibss_beacon = skb;
2260
2261         priv->assoc_id = 0;
2262         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2263         priv->timestamp = le64_to_cpu(timestamp);
2264
2265         IWL_DEBUG_MAC80211(priv, "leave\n");
2266         spin_unlock_irqrestore(&priv->lock, flags);
2267
2268         iwl_reset_qos(priv);
2269
2270         priv->cfg->ops->lib->post_associate(priv);
2271
2272
2273         return 0;
2274 }
2275 EXPORT_SYMBOL(iwl_mac_beacon_update);
2276
2277 static int iwl_set_mode(struct iwl_priv *priv, struct ieee80211_vif *vif)
2278 {
2279         iwl_connection_init_rx_config(priv, vif->type);
2280
2281         if (priv->cfg->ops->hcmd->set_rxon_chain)
2282                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2283
2284         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2285
2286         return iwlcore_commit_rxon(priv);
2287 }
2288
2289 int iwl_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
2290 {
2291         struct iwl_priv *priv = hw->priv;
2292         int err = 0;
2293
2294         IWL_DEBUG_MAC80211(priv, "enter: type %d\n", vif->type);
2295
2296         mutex_lock(&priv->mutex);
2297
2298         if (WARN_ON(!iwl_is_ready_rf(priv))) {
2299                 err = -EINVAL;
2300                 goto out;
2301         }
2302
2303         if (priv->vif) {
2304                 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2305                 err = -EOPNOTSUPP;
2306                 goto out;
2307         }
2308
2309         priv->vif = vif;
2310         priv->iw_mode = vif->type;
2311
2312         IWL_DEBUG_MAC80211(priv, "Set %pM\n", vif->addr);
2313         memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
2314
2315         err = iwl_set_mode(priv, vif);
2316         if (err)
2317                 goto out_err;
2318
2319         /* Add the broadcast address so we can send broadcast frames */
2320         priv->cfg->ops->lib->add_bcast_station(priv);
2321
2322         goto out;
2323
2324  out_err:
2325         priv->vif = NULL;
2326         priv->iw_mode = NL80211_IFTYPE_STATION;
2327  out:
2328         mutex_unlock(&priv->mutex);
2329
2330         IWL_DEBUG_MAC80211(priv, "leave\n");
2331         return err;
2332 }
2333 EXPORT_SYMBOL(iwl_mac_add_interface);
2334
2335 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2336                               struct ieee80211_vif *vif)
2337 {
2338         struct iwl_priv *priv = hw->priv;
2339
2340         IWL_DEBUG_MAC80211(priv, "enter\n");
2341
2342         mutex_lock(&priv->mutex);
2343
2344         iwl_clear_ucode_stations(priv, true);
2345
2346         if (iwl_is_ready_rf(priv)) {
2347                 iwl_scan_cancel_timeout(priv, 100);
2348                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2349                 iwlcore_commit_rxon(priv);
2350         }
2351         if (priv->vif == vif) {
2352                 priv->vif = NULL;
2353                 memset(priv->bssid, 0, ETH_ALEN);
2354         }
2355         mutex_unlock(&priv->mutex);
2356
2357         IWL_DEBUG_MAC80211(priv, "leave\n");
2358
2359 }
2360 EXPORT_SYMBOL(iwl_mac_remove_interface);
2361
2362 /**
2363  * iwl_mac_config - mac80211 config callback
2364  *
2365  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2366  * be set inappropriately and the driver currently sets the hardware up to
2367  * use it whenever needed.
2368  */
2369 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2370 {
2371         struct iwl_priv *priv = hw->priv;
2372         const struct iwl_channel_info *ch_info;
2373         struct ieee80211_conf *conf = &hw->conf;
2374         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2375         unsigned long flags = 0;
2376         int ret = 0;
2377         u16 ch;
2378         int scan_active = 0;
2379
2380         mutex_lock(&priv->mutex);
2381
2382         IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2383                                         conf->channel->hw_value, changed);
2384
2385         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2386                         test_bit(STATUS_SCANNING, &priv->status))) {
2387                 scan_active = 1;
2388                 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2389         }
2390
2391         if (changed & (IEEE80211_CONF_CHANGE_SMPS |
2392                        IEEE80211_CONF_CHANGE_CHANNEL)) {
2393                 /* mac80211 uses static for non-HT which is what we want */
2394                 priv->current_ht_config.smps = conf->smps_mode;
2395
2396                 /*
2397                  * Recalculate chain counts.
2398                  *
2399                  * If monitor mode is enabled then mac80211 will
2400                  * set up the SM PS mode to OFF if an HT channel is
2401                  * configured.
2402                  */
2403                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2404                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2405         }
2406
2407         /* during scanning mac80211 will delay channel setting until
2408          * scan finish with changed = 0
2409          */
2410         if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2411                 if (scan_active)
2412                         goto set_ch_out;
2413
2414                 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2415                 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2416                 if (!is_channel_valid(ch_info)) {
2417                         IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2418                         ret = -EINVAL;
2419                         goto set_ch_out;
2420                 }
2421
2422                 spin_lock_irqsave(&priv->lock, flags);
2423
2424                 /* Configure HT40 channels */
2425                 ht_conf->is_ht = conf_is_ht(conf);
2426                 if (ht_conf->is_ht) {
2427                         if (conf_is_ht40_minus(conf)) {
2428                                 ht_conf->extension_chan_offset =
2429                                         IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2430                                 ht_conf->is_40mhz = true;
2431                         } else if (conf_is_ht40_plus(conf)) {
2432                                 ht_conf->extension_chan_offset =
2433                                         IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2434                                 ht_conf->is_40mhz = true;
2435                         } else {
2436                                 ht_conf->extension_chan_offset =
2437                                         IEEE80211_HT_PARAM_CHA_SEC_NONE;
2438                                 ht_conf->is_40mhz = false;
2439                         }
2440                 } else
2441                         ht_conf->is_40mhz = false;
2442                 /* Default to no protection. Protection mode will later be set
2443                  * from BSS config in iwl_ht_conf */
2444                 ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2445
2446                 /* if we are switching from ht to 2.4 clear flags
2447                  * from any ht related info since 2.4 does not
2448                  * support ht */
2449                 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2450                         priv->staging_rxon.flags = 0;
2451
2452                 iwl_set_rxon_channel(priv, conf->channel);
2453                 iwl_set_rxon_ht(priv, ht_conf);
2454
2455                 iwl_set_flags_for_band(priv, conf->channel->band);
2456                 spin_unlock_irqrestore(&priv->lock, flags);
2457                 if (iwl_is_associated(priv) &&
2458                     (le16_to_cpu(priv->active_rxon.channel) != ch) &&
2459                     priv->cfg->ops->lib->set_channel_switch) {
2460                         iwl_set_rate(priv);
2461                         /*
2462                          * at this point, staging_rxon has the
2463                          * configuration for channel switch
2464                          */
2465                         ret = priv->cfg->ops->lib->set_channel_switch(priv,
2466                                 ch);
2467                         if (!ret) {
2468                                 iwl_print_rx_config_cmd(priv);
2469                                 goto out;
2470                         }
2471                         priv->switch_rxon.switch_in_progress = false;
2472                 }
2473  set_ch_out:
2474                 /* The list of supported rates and rate mask can be different
2475                  * for each band; since the band may have changed, reset
2476                  * the rate mask to what mac80211 lists */
2477                 iwl_set_rate(priv);
2478         }
2479
2480         if (changed & (IEEE80211_CONF_CHANGE_PS |
2481                         IEEE80211_CONF_CHANGE_IDLE)) {
2482                 ret = iwl_power_update_mode(priv, false);
2483                 if (ret)
2484                         IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
2485         }
2486
2487         if (changed & IEEE80211_CONF_CHANGE_POWER) {
2488                 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2489                         priv->tx_power_user_lmt, conf->power_level);
2490
2491                 iwl_set_tx_power(priv, conf->power_level, false);
2492         }
2493
2494         if (!iwl_is_ready(priv)) {
2495                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2496                 goto out;
2497         }
2498
2499         if (scan_active)
2500                 goto out;
2501
2502         if (memcmp(&priv->active_rxon,
2503                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2504                 iwlcore_commit_rxon(priv);
2505         else
2506                 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2507
2508
2509 out:
2510         IWL_DEBUG_MAC80211(priv, "leave\n");
2511         mutex_unlock(&priv->mutex);
2512         return ret;
2513 }
2514 EXPORT_SYMBOL(iwl_mac_config);
2515
2516 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2517 {
2518         struct iwl_priv *priv = hw->priv;
2519         unsigned long flags;
2520
2521         mutex_lock(&priv->mutex);
2522         IWL_DEBUG_MAC80211(priv, "enter\n");
2523
2524         spin_lock_irqsave(&priv->lock, flags);
2525         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
2526         spin_unlock_irqrestore(&priv->lock, flags);
2527
2528         iwl_reset_qos(priv);
2529
2530         spin_lock_irqsave(&priv->lock, flags);
2531         priv->assoc_id = 0;
2532         priv->assoc_capability = 0;
2533         priv->assoc_station_added = 0;
2534
2535         /* new association get rid of ibss beacon skb */
2536         if (priv->ibss_beacon)
2537                 dev_kfree_skb(priv->ibss_beacon);
2538
2539         priv->ibss_beacon = NULL;
2540
2541         priv->beacon_int = priv->vif->bss_conf.beacon_int;
2542         priv->timestamp = 0;
2543
2544         spin_unlock_irqrestore(&priv->lock, flags);
2545
2546         if (!iwl_is_ready_rf(priv)) {
2547                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2548                 mutex_unlock(&priv->mutex);
2549                 return;
2550         }
2551
2552         /* we are restarting association process
2553          * clear RXON_FILTER_ASSOC_MSK bit
2554          */
2555         iwl_scan_cancel_timeout(priv, 100);
2556         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2557         iwlcore_commit_rxon(priv);
2558
2559         iwl_set_rate(priv);
2560
2561         mutex_unlock(&priv->mutex);
2562
2563         IWL_DEBUG_MAC80211(priv, "leave\n");
2564 }
2565 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2566
2567 int iwl_alloc_txq_mem(struct iwl_priv *priv)
2568 {
2569         if (!priv->txq)
2570                 priv->txq = kzalloc(
2571                         sizeof(struct iwl_tx_queue) * priv->cfg->num_of_queues,
2572                         GFP_KERNEL);
2573         if (!priv->txq) {
2574                 IWL_ERR(priv, "Not enough memory for txq \n");
2575                 return -ENOMEM;
2576         }
2577         return 0;
2578 }
2579 EXPORT_SYMBOL(iwl_alloc_txq_mem);
2580
2581 void iwl_free_txq_mem(struct iwl_priv *priv)
2582 {
2583         kfree(priv->txq);
2584         priv->txq = NULL;
2585 }
2586 EXPORT_SYMBOL(iwl_free_txq_mem);
2587
2588 int iwl_send_wimax_coex(struct iwl_priv *priv)
2589 {
2590         struct iwl_wimax_coex_cmd uninitialized_var(coex_cmd);
2591
2592         if (priv->cfg->support_wimax_coexist) {
2593                 /* UnMask wake up src at associated sleep */
2594                 coex_cmd.flags |= COEX_FLAGS_ASSOC_WA_UNMASK_MSK;
2595
2596                 /* UnMask wake up src at unassociated sleep */
2597                 coex_cmd.flags |= COEX_FLAGS_UNASSOC_WA_UNMASK_MSK;
2598                 memcpy(coex_cmd.sta_prio, cu_priorities,
2599                         sizeof(struct iwl_wimax_coex_event_entry) *
2600                          COEX_NUM_OF_EVENTS);
2601
2602                 /* enabling the coexistence feature */
2603                 coex_cmd.flags |= COEX_FLAGS_COEX_ENABLE_MSK;
2604
2605                 /* enabling the priorities tables */
2606                 coex_cmd.flags |= COEX_FLAGS_STA_TABLE_VALID_MSK;
2607         } else {
2608                 /* coexistence is disabled */
2609                 memset(&coex_cmd, 0, sizeof(coex_cmd));
2610         }
2611         return iwl_send_cmd_pdu(priv, COEX_PRIORITY_TABLE_CMD,
2612                                 sizeof(coex_cmd), &coex_cmd);
2613 }
2614 EXPORT_SYMBOL(iwl_send_wimax_coex);
2615
2616 #ifdef CONFIG_IWLWIFI_DEBUGFS
2617
2618 #define IWL_TRAFFIC_DUMP_SIZE   (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2619
2620 void iwl_reset_traffic_log(struct iwl_priv *priv)
2621 {
2622         priv->tx_traffic_idx = 0;
2623         priv->rx_traffic_idx = 0;
2624         if (priv->tx_traffic)
2625                 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2626         if (priv->rx_traffic)
2627                 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2628 }
2629
2630 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2631 {
2632         u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2633
2634         if (iwl_debug_level & IWL_DL_TX) {
2635                 if (!priv->tx_traffic) {
2636                         priv->tx_traffic =
2637                                 kzalloc(traffic_size, GFP_KERNEL);
2638                         if (!priv->tx_traffic)
2639                                 return -ENOMEM;
2640                 }
2641         }
2642         if (iwl_debug_level & IWL_DL_RX) {
2643                 if (!priv->rx_traffic) {
2644                         priv->rx_traffic =
2645                                 kzalloc(traffic_size, GFP_KERNEL);
2646                         if (!priv->rx_traffic)
2647                                 return -ENOMEM;
2648                 }
2649         }
2650         iwl_reset_traffic_log(priv);
2651         return 0;
2652 }
2653 EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2654
2655 void iwl_free_traffic_mem(struct iwl_priv *priv)
2656 {
2657         kfree(priv->tx_traffic);
2658         priv->tx_traffic = NULL;
2659
2660         kfree(priv->rx_traffic);
2661         priv->rx_traffic = NULL;
2662 }
2663 EXPORT_SYMBOL(iwl_free_traffic_mem);
2664
2665 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
2666                       u16 length, struct ieee80211_hdr *header)
2667 {
2668         __le16 fc;
2669         u16 len;
2670
2671         if (likely(!(iwl_debug_level & IWL_DL_TX)))
2672                 return;
2673
2674         if (!priv->tx_traffic)
2675                 return;
2676
2677         fc = header->frame_control;
2678         if (ieee80211_is_data(fc)) {
2679                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2680                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
2681                 memcpy((priv->tx_traffic +
2682                        (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2683                        header, len);
2684                 priv->tx_traffic_idx =
2685                         (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2686         }
2687 }
2688 EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
2689
2690 void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
2691                       u16 length, struct ieee80211_hdr *header)
2692 {
2693         __le16 fc;
2694         u16 len;
2695
2696         if (likely(!(iwl_debug_level & IWL_DL_RX)))
2697                 return;
2698
2699         if (!priv->rx_traffic)
2700                 return;
2701
2702         fc = header->frame_control;
2703         if (ieee80211_is_data(fc)) {
2704                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2705                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
2706                 memcpy((priv->rx_traffic +
2707                        (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2708                        header, len);
2709                 priv->rx_traffic_idx =
2710                         (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2711         }
2712 }
2713 EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
2714
2715 const char *get_mgmt_string(int cmd)
2716 {
2717         switch (cmd) {
2718                 IWL_CMD(MANAGEMENT_ASSOC_REQ);
2719                 IWL_CMD(MANAGEMENT_ASSOC_RESP);
2720                 IWL_CMD(MANAGEMENT_REASSOC_REQ);
2721                 IWL_CMD(MANAGEMENT_REASSOC_RESP);
2722                 IWL_CMD(MANAGEMENT_PROBE_REQ);
2723                 IWL_CMD(MANAGEMENT_PROBE_RESP);
2724                 IWL_CMD(MANAGEMENT_BEACON);
2725                 IWL_CMD(MANAGEMENT_ATIM);
2726                 IWL_CMD(MANAGEMENT_DISASSOC);
2727                 IWL_CMD(MANAGEMENT_AUTH);
2728                 IWL_CMD(MANAGEMENT_DEAUTH);
2729                 IWL_CMD(MANAGEMENT_ACTION);
2730         default:
2731                 return "UNKNOWN";
2732
2733         }
2734 }
2735
2736 const char *get_ctrl_string(int cmd)
2737 {
2738         switch (cmd) {
2739                 IWL_CMD(CONTROL_BACK_REQ);
2740                 IWL_CMD(CONTROL_BACK);
2741                 IWL_CMD(CONTROL_PSPOLL);
2742                 IWL_CMD(CONTROL_RTS);
2743                 IWL_CMD(CONTROL_CTS);
2744                 IWL_CMD(CONTROL_ACK);
2745                 IWL_CMD(CONTROL_CFEND);
2746                 IWL_CMD(CONTROL_CFENDACK);
2747         default:
2748                 return "UNKNOWN";
2749
2750         }
2751 }
2752
2753 void iwl_clear_traffic_stats(struct iwl_priv *priv)
2754 {
2755         memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
2756         memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
2757         priv->led_tpt = 0;
2758 }
2759
2760 /*
2761  * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
2762  * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
2763  * Use debugFs to display the rx/rx_statistics
2764  * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
2765  * information will be recorded, but DATA pkt still will be recorded
2766  * for the reason of iwl_led.c need to control the led blinking based on
2767  * number of tx and rx data.
2768  *
2769  */
2770 void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
2771 {
2772         struct traffic_stats    *stats;
2773
2774         if (is_tx)
2775                 stats = &priv->tx_stats;
2776         else
2777                 stats = &priv->rx_stats;
2778
2779         if (ieee80211_is_mgmt(fc)) {
2780                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2781                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
2782                         stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
2783                         break;
2784                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
2785                         stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
2786                         break;
2787                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
2788                         stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
2789                         break;
2790                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
2791                         stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
2792                         break;
2793                 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
2794                         stats->mgmt[MANAGEMENT_PROBE_REQ]++;
2795                         break;
2796                 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
2797                         stats->mgmt[MANAGEMENT_PROBE_RESP]++;
2798                         break;
2799                 case cpu_to_le16(IEEE80211_STYPE_BEACON):
2800                         stats->mgmt[MANAGEMENT_BEACON]++;
2801                         break;
2802                 case cpu_to_le16(IEEE80211_STYPE_ATIM):
2803                         stats->mgmt[MANAGEMENT_ATIM]++;
2804                         break;
2805                 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
2806                         stats->mgmt[MANAGEMENT_DISASSOC]++;
2807                         break;
2808                 case cpu_to_le16(IEEE80211_STYPE_AUTH):
2809                         stats->mgmt[MANAGEMENT_AUTH]++;
2810                         break;
2811                 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
2812                         stats->mgmt[MANAGEMENT_DEAUTH]++;
2813                         break;
2814                 case cpu_to_le16(IEEE80211_STYPE_ACTION):
2815                         stats->mgmt[MANAGEMENT_ACTION]++;
2816                         break;
2817                 }
2818         } else if (ieee80211_is_ctl(fc)) {
2819                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2820                 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
2821                         stats->ctrl[CONTROL_BACK_REQ]++;
2822                         break;
2823                 case cpu_to_le16(IEEE80211_STYPE_BACK):
2824                         stats->ctrl[CONTROL_BACK]++;
2825                         break;
2826                 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
2827                         stats->ctrl[CONTROL_PSPOLL]++;
2828                         break;
2829                 case cpu_to_le16(IEEE80211_STYPE_RTS):
2830                         stats->ctrl[CONTROL_RTS]++;
2831                         break;
2832                 case cpu_to_le16(IEEE80211_STYPE_CTS):
2833                         stats->ctrl[CONTROL_CTS]++;
2834                         break;
2835                 case cpu_to_le16(IEEE80211_STYPE_ACK):
2836                         stats->ctrl[CONTROL_ACK]++;
2837                         break;
2838                 case cpu_to_le16(IEEE80211_STYPE_CFEND):
2839                         stats->ctrl[CONTROL_CFEND]++;
2840                         break;
2841                 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
2842                         stats->ctrl[CONTROL_CFENDACK]++;
2843                         break;
2844                 }
2845         } else {
2846                 /* data */
2847                 stats->data_cnt++;
2848                 stats->data_bytes += len;
2849         }
2850         iwl_leds_background(priv);
2851 }
2852 EXPORT_SYMBOL(iwl_update_stats);
2853 #endif
2854
2855 const static char *get_csr_string(int cmd)
2856 {
2857         switch (cmd) {
2858                 IWL_CMD(CSR_HW_IF_CONFIG_REG);
2859                 IWL_CMD(CSR_INT_COALESCING);
2860                 IWL_CMD(CSR_INT);
2861                 IWL_CMD(CSR_INT_MASK);
2862                 IWL_CMD(CSR_FH_INT_STATUS);
2863                 IWL_CMD(CSR_GPIO_IN);
2864                 IWL_CMD(CSR_RESET);
2865                 IWL_CMD(CSR_GP_CNTRL);
2866                 IWL_CMD(CSR_HW_REV);
2867                 IWL_CMD(CSR_EEPROM_REG);
2868                 IWL_CMD(CSR_EEPROM_GP);
2869                 IWL_CMD(CSR_OTP_GP_REG);
2870                 IWL_CMD(CSR_GIO_REG);
2871                 IWL_CMD(CSR_GP_UCODE_REG);
2872                 IWL_CMD(CSR_GP_DRIVER_REG);
2873                 IWL_CMD(CSR_UCODE_DRV_GP1);
2874                 IWL_CMD(CSR_UCODE_DRV_GP2);
2875                 IWL_CMD(CSR_LED_REG);
2876                 IWL_CMD(CSR_DRAM_INT_TBL_REG);
2877                 IWL_CMD(CSR_GIO_CHICKEN_BITS);
2878                 IWL_CMD(CSR_ANA_PLL_CFG);
2879                 IWL_CMD(CSR_HW_REV_WA_REG);
2880                 IWL_CMD(CSR_DBG_HPET_MEM_REG);
2881         default:
2882                 return "UNKNOWN";
2883
2884         }
2885 }
2886
2887 void iwl_dump_csr(struct iwl_priv *priv)
2888 {
2889         int i;
2890         u32 csr_tbl[] = {
2891                 CSR_HW_IF_CONFIG_REG,
2892                 CSR_INT_COALESCING,
2893                 CSR_INT,
2894                 CSR_INT_MASK,
2895                 CSR_FH_INT_STATUS,
2896                 CSR_GPIO_IN,
2897                 CSR_RESET,
2898                 CSR_GP_CNTRL,
2899                 CSR_HW_REV,
2900                 CSR_EEPROM_REG,
2901                 CSR_EEPROM_GP,
2902                 CSR_OTP_GP_REG,
2903                 CSR_GIO_REG,
2904                 CSR_GP_UCODE_REG,
2905                 CSR_GP_DRIVER_REG,
2906                 CSR_UCODE_DRV_GP1,
2907                 CSR_UCODE_DRV_GP2,
2908                 CSR_LED_REG,
2909                 CSR_DRAM_INT_TBL_REG,
2910                 CSR_GIO_CHICKEN_BITS,
2911                 CSR_ANA_PLL_CFG,
2912                 CSR_HW_REV_WA_REG,
2913                 CSR_DBG_HPET_MEM_REG
2914         };
2915         IWL_ERR(priv, "CSR values:\n");
2916         IWL_ERR(priv, "(2nd byte of CSR_INT_COALESCING is "
2917                 "CSR_INT_PERIODIC_REG)\n");
2918         for (i = 0; i <  ARRAY_SIZE(csr_tbl); i++) {
2919                 IWL_ERR(priv, "  %25s: 0X%08x\n",
2920                         get_csr_string(csr_tbl[i]),
2921                         iwl_read32(priv, csr_tbl[i]));
2922         }
2923 }
2924 EXPORT_SYMBOL(iwl_dump_csr);
2925
2926 const static char *get_fh_string(int cmd)
2927 {
2928         switch (cmd) {
2929                 IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG);
2930                 IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG);
2931                 IWL_CMD(FH_RSCSR_CHNL0_WPTR);
2932                 IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG);
2933                 IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG);
2934                 IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG);
2935                 IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV);
2936                 IWL_CMD(FH_TSSR_TX_STATUS_REG);
2937                 IWL_CMD(FH_TSSR_TX_ERROR_REG);
2938         default:
2939                 return "UNKNOWN";
2940
2941         }
2942 }
2943
2944 int iwl_dump_fh(struct iwl_priv *priv, char **buf, bool display)
2945 {
2946         int i;
2947 #ifdef CONFIG_IWLWIFI_DEBUG
2948         int pos = 0;
2949         size_t bufsz = 0;
2950 #endif
2951         u32 fh_tbl[] = {
2952                 FH_RSCSR_CHNL0_STTS_WPTR_REG,
2953                 FH_RSCSR_CHNL0_RBDCB_BASE_REG,
2954                 FH_RSCSR_CHNL0_WPTR,
2955                 FH_MEM_RCSR_CHNL0_CONFIG_REG,
2956                 FH_MEM_RSSR_SHARED_CTRL_REG,
2957                 FH_MEM_RSSR_RX_STATUS_REG,
2958                 FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV,
2959                 FH_TSSR_TX_STATUS_REG,
2960                 FH_TSSR_TX_ERROR_REG
2961         };
2962 #ifdef CONFIG_IWLWIFI_DEBUG
2963         if (display) {
2964                 bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40;
2965                 *buf = kmalloc(bufsz, GFP_KERNEL);
2966                 if (!*buf)
2967                         return -ENOMEM;
2968                 pos += scnprintf(*buf + pos, bufsz - pos,
2969                                 "FH register values:\n");
2970                 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) {
2971                         pos += scnprintf(*buf + pos, bufsz - pos,
2972                                 "  %34s: 0X%08x\n",
2973                                 get_fh_string(fh_tbl[i]),
2974                                 iwl_read_direct32(priv, fh_tbl[i]));
2975                 }
2976                 return pos;
2977         }
2978 #endif
2979         IWL_ERR(priv, "FH register values:\n");
2980         for (i = 0; i <  ARRAY_SIZE(fh_tbl); i++) {
2981                 IWL_ERR(priv, "  %34s: 0X%08x\n",
2982                         get_fh_string(fh_tbl[i]),
2983                         iwl_read_direct32(priv, fh_tbl[i]));
2984         }
2985         return 0;
2986 }
2987 EXPORT_SYMBOL(iwl_dump_fh);
2988
2989 static void iwl_force_rf_reset(struct iwl_priv *priv)
2990 {
2991         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2992                 return;
2993
2994         if (!iwl_is_associated(priv)) {
2995                 IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n");
2996                 return;
2997         }
2998         /*
2999          * There is no easy and better way to force reset the radio,
3000          * the only known method is switching channel which will force to
3001          * reset and tune the radio.
3002          * Use internal short scan (single channel) operation to should
3003          * achieve this objective.
3004          * Driver should reset the radio when number of consecutive missed
3005          * beacon, or any other uCode error condition detected.
3006          */
3007         IWL_DEBUG_INFO(priv, "perform radio reset.\n");
3008         iwl_internal_short_hw_scan(priv);
3009         return;
3010 }
3011
3012
3013 int iwl_force_reset(struct iwl_priv *priv, int mode)
3014 {
3015         struct iwl_force_reset *force_reset;
3016
3017         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3018                 return -EINVAL;
3019
3020         if (mode >= IWL_MAX_FORCE_RESET) {
3021                 IWL_DEBUG_INFO(priv, "invalid reset request.\n");
3022                 return -EINVAL;
3023         }
3024         force_reset = &priv->force_reset[mode];
3025         force_reset->reset_request_count++;
3026         if (force_reset->last_force_reset_jiffies &&
3027             time_after(force_reset->last_force_reset_jiffies +
3028             force_reset->reset_duration, jiffies)) {
3029                 IWL_DEBUG_INFO(priv, "force reset rejected\n");
3030                 force_reset->reset_reject_count++;
3031                 return -EAGAIN;
3032         }
3033         force_reset->reset_success_count++;
3034         force_reset->last_force_reset_jiffies = jiffies;
3035         IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode);
3036         switch (mode) {
3037         case IWL_RF_RESET:
3038                 iwl_force_rf_reset(priv);
3039                 break;
3040         case IWL_FW_RESET:
3041                 IWL_ERR(priv, "On demand firmware reload\n");
3042                 /* Set the FW error flag -- cleared on iwl_down */
3043                 set_bit(STATUS_FW_ERROR, &priv->status);
3044                 wake_up_interruptible(&priv->wait_command_queue);
3045                 /*
3046                  * Keep the restart process from trying to send host
3047                  * commands by clearing the INIT status bit
3048                  */
3049                 clear_bit(STATUS_READY, &priv->status);
3050                 queue_work(priv->workqueue, &priv->restart);
3051                 break;
3052         }
3053         return 0;
3054 }
3055
3056 #ifdef CONFIG_PM
3057
3058 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3059 {
3060         struct iwl_priv *priv = pci_get_drvdata(pdev);
3061
3062         /*
3063          * This function is called when system goes into suspend state
3064          * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
3065          * first but since iwl_mac_stop() has no knowledge of who the caller is,
3066          * it will not call apm_ops.stop() to stop the DMA operation.
3067          * Calling apm_ops.stop here to make sure we stop the DMA.
3068          */
3069         priv->cfg->ops->lib->apm_ops.stop(priv);
3070
3071         pci_save_state(pdev);
3072         pci_disable_device(pdev);
3073         pci_set_power_state(pdev, PCI_D3hot);
3074
3075         return 0;
3076 }
3077 EXPORT_SYMBOL(iwl_pci_suspend);
3078
3079 int iwl_pci_resume(struct pci_dev *pdev)
3080 {
3081         struct iwl_priv *priv = pci_get_drvdata(pdev);
3082         int ret;
3083
3084         pci_set_power_state(pdev, PCI_D0);
3085         ret = pci_enable_device(pdev);
3086         if (ret)
3087                 return ret;
3088         pci_restore_state(pdev);
3089         iwl_enable_interrupts(priv);
3090
3091         return 0;
3092 }
3093 EXPORT_SYMBOL(iwl_pci_resume);
3094
3095 #endif /* CONFIG_PM */