drivers/net/wireless/rsi/rsi_91x_mac80211.c

   1 /**
   2  * Copyright (c) 2014 Redpine Signals Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <linux/etherdevice.h>
  18 #include "rsi_debugfs.h"
  19 #include "rsi_mgmt.h"
  20 #include "rsi_sdio.h"
  21 #include "rsi_common.h"
  22 #include "rsi_ps.h"
  23
  24 static const struct ieee80211_channel rsi_2ghz_channels[] = {
  25         { .band = NL80211_BAND_2GHZ, .center_freq = 2412,
  26           .hw_value = 1 }, /* Channel 1 */
  27         { .band = NL80211_BAND_2GHZ, .center_freq = 2417,
  28           .hw_value = 2 }, /* Channel 2 */
  29         { .band = NL80211_BAND_2GHZ, .center_freq = 2422,
  30           .hw_value = 3 }, /* Channel 3 */
  31         { .band = NL80211_BAND_2GHZ, .center_freq = 2427,
  32           .hw_value = 4 }, /* Channel 4 */
  33         { .band = NL80211_BAND_2GHZ, .center_freq = 2432,
  34           .hw_value = 5 }, /* Channel 5 */
  35         { .band = NL80211_BAND_2GHZ, .center_freq = 2437,
  36           .hw_value = 6 }, /* Channel 6 */
  37         { .band = NL80211_BAND_2GHZ, .center_freq = 2442,
  38           .hw_value = 7 }, /* Channel 7 */
  39         { .band = NL80211_BAND_2GHZ, .center_freq = 2447,
  40           .hw_value = 8 }, /* Channel 8 */
  41         { .band = NL80211_BAND_2GHZ, .center_freq = 2452,
  42           .hw_value = 9 }, /* Channel 9 */
  43         { .band = NL80211_BAND_2GHZ, .center_freq = 2457,
  44           .hw_value = 10 }, /* Channel 10 */
  45         { .band = NL80211_BAND_2GHZ, .center_freq = 2462,
  46           .hw_value = 11 }, /* Channel 11 */
  47         { .band = NL80211_BAND_2GHZ, .center_freq = 2467,
  48           .hw_value = 12 }, /* Channel 12 */
  49         { .band = NL80211_BAND_2GHZ, .center_freq = 2472,
  50           .hw_value = 13 }, /* Channel 13 */
  51         { .band = NL80211_BAND_2GHZ, .center_freq = 2484,
  52           .hw_value = 14 }, /* Channel 14 */
  53 };
  54
  55 static const struct ieee80211_channel rsi_5ghz_channels[] = {
  56         { .band = NL80211_BAND_5GHZ, .center_freq = 5180,
  57           .hw_value = 36,  }, /* Channel 36 */
  58         { .band = NL80211_BAND_5GHZ, .center_freq = 5200,
  59           .hw_value = 40, }, /* Channel 40 */
  60         { .band = NL80211_BAND_5GHZ, .center_freq = 5220,
  61           .hw_value = 44, }, /* Channel 44 */
  62         { .band = NL80211_BAND_5GHZ, .center_freq = 5240,
  63           .hw_value = 48, }, /* Channel 48 */
  64         { .band = NL80211_BAND_5GHZ, .center_freq = 5260,
  65           .hw_value = 52, }, /* Channel 52 */
  66         { .band = NL80211_BAND_5GHZ, .center_freq = 5280,
  67           .hw_value = 56, }, /* Channel 56 */
  68         { .band = NL80211_BAND_5GHZ, .center_freq = 5300,
  69           .hw_value = 60, }, /* Channel 60 */
  70         { .band = NL80211_BAND_5GHZ, .center_freq = 5320,
  71           .hw_value = 64, }, /* Channel 64 */
  72         { .band = NL80211_BAND_5GHZ, .center_freq = 5500,
  73           .hw_value = 100, }, /* Channel 100 */
  74         { .band = NL80211_BAND_5GHZ, .center_freq = 5520,
  75           .hw_value = 104, }, /* Channel 104 */
  76         { .band = NL80211_BAND_5GHZ, .center_freq = 5540,
  77           .hw_value = 108, }, /* Channel 108 */
  78         { .band = NL80211_BAND_5GHZ, .center_freq = 5560,
  79           .hw_value = 112, }, /* Channel 112 */
  80         { .band = NL80211_BAND_5GHZ, .center_freq = 5580,
  81           .hw_value = 116, }, /* Channel 116 */
  82         { .band = NL80211_BAND_5GHZ, .center_freq = 5600,
  83           .hw_value = 120, }, /* Channel 120 */
  84         { .band = NL80211_BAND_5GHZ, .center_freq = 5620,
  85           .hw_value = 124, }, /* Channel 124 */
  86         { .band = NL80211_BAND_5GHZ, .center_freq = 5640,
  87           .hw_value = 128, }, /* Channel 128 */
  88         { .band = NL80211_BAND_5GHZ, .center_freq = 5660,
  89           .hw_value = 132, }, /* Channel 132 */
  90         { .band = NL80211_BAND_5GHZ, .center_freq = 5680,
  91           .hw_value = 136, }, /* Channel 136 */
  92         { .band = NL80211_BAND_5GHZ, .center_freq = 5700,
  93           .hw_value = 140, }, /* Channel 140 */
  94         { .band = NL80211_BAND_5GHZ, .center_freq = 5745,
  95           .hw_value = 149, }, /* Channel 149 */
  96         { .band = NL80211_BAND_5GHZ, .center_freq = 5765,
  97           .hw_value = 153, }, /* Channel 153 */
  98         { .band = NL80211_BAND_5GHZ, .center_freq = 5785,
  99           .hw_value = 157, }, /* Channel 157 */
 100         { .band = NL80211_BAND_5GHZ, .center_freq = 5805,
 101           .hw_value = 161, }, /* Channel 161 */
 102         { .band = NL80211_BAND_5GHZ, .center_freq = 5825,
 103           .hw_value = 165, }, /* Channel 165 */
 104 };
 105
 106 struct ieee80211_rate rsi_rates[12] = {
 107         { .bitrate = STD_RATE_01  * 5, .hw_value = RSI_RATE_1 },
 108         { .bitrate = STD_RATE_02  * 5, .hw_value = RSI_RATE_2 },
 109         { .bitrate = STD_RATE_5_5 * 5, .hw_value = RSI_RATE_5_5 },
 110         { .bitrate = STD_RATE_11  * 5, .hw_value = RSI_RATE_11 },
 111         { .bitrate = STD_RATE_06  * 5, .hw_value = RSI_RATE_6 },
 112         { .bitrate = STD_RATE_09  * 5, .hw_value = RSI_RATE_9 },
 113         { .bitrate = STD_RATE_12  * 5, .hw_value = RSI_RATE_12 },
 114         { .bitrate = STD_RATE_18  * 5, .hw_value = RSI_RATE_18 },
 115         { .bitrate = STD_RATE_24  * 5, .hw_value = RSI_RATE_24 },
 116         { .bitrate = STD_RATE_36  * 5, .hw_value = RSI_RATE_36 },
 117         { .bitrate = STD_RATE_48  * 5, .hw_value = RSI_RATE_48 },
 118         { .bitrate = STD_RATE_54  * 5, .hw_value = RSI_RATE_54 },
 119 };
 120
 121 const u16 rsi_mcsrates[8] = {
 122         RSI_RATE_MCS0, RSI_RATE_MCS1, RSI_RATE_MCS2, RSI_RATE_MCS3,
 123         RSI_RATE_MCS4, RSI_RATE_MCS5, RSI_RATE_MCS6, RSI_RATE_MCS7
 124 };
 125
 126 static const u32 rsi_max_ap_stas[16] = {
 127         32,     /* 1 - Wi-Fi alone */
 128         0,      /* 2 */
 129         0,      /* 3 */
 130         0,      /* 4 - BT EDR alone */
 131         4,      /* 5 - STA + BT EDR */
 132         32,     /* 6 - AP + BT EDR */
 133         0,      /* 7 */
 134         0,      /* 8 - BT LE alone */
 135         4,      /* 9 - STA + BE LE */
 136         0,      /* 10 */
 137         0,      /* 11 */
 138         0,      /* 12 */
 139         1,      /* 13 - STA + BT Dual */
 140         4,      /* 14 - AP + BT Dual */
 141 };
 142
 143 static const struct ieee80211_iface_limit rsi_iface_limits[] = {
 144         {
 145                 .max = 1,
 146                 .types = BIT(NL80211_IFTYPE_STATION),
 147         },
 148         {
 149                 .max = 1,
 150                 .types = BIT(NL80211_IFTYPE_AP) |
 151                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 152                         BIT(NL80211_IFTYPE_P2P_GO),
 153         },
 154         {
 155                 .max = 1,
 156                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 157         },
 158 };
 159
 160 static const struct ieee80211_iface_combination rsi_iface_combinations[] = {
 161         {
 162                 .num_different_channels = 1,
 163                 .max_interfaces = 3,
 164                 .limits = rsi_iface_limits,
 165                 .n_limits = ARRAY_SIZE(rsi_iface_limits),
 166         },
 167 };
 168
 169 /**
 170  * rsi_is_cipher_wep() -  This function determines if the cipher is WEP or not.
 171  * @common: Pointer to the driver private structure.
 172  *
 173  * Return: If cipher type is WEP, a value of 1 is returned, else 0.
 174  */
 175
 176 bool rsi_is_cipher_wep(struct rsi_common *common)
 177 {
 178         if (((common->secinfo.gtk_cipher == WLAN_CIPHER_SUITE_WEP104) ||
 179              (common->secinfo.gtk_cipher == WLAN_CIPHER_SUITE_WEP40)) &&
 180             (!common->secinfo.ptk_cipher))
 181                 return true;
 182         else
 183                 return false;
 184 }
 185
 186 /**
 187  * rsi_register_rates_channels() - This function registers channels and rates.
 188  * @adapter: Pointer to the adapter structure.
 189  * @band: Operating band to be set.
 190  *
 191  * Return: int - 0 on success, negative error on failure.
 192  */
 193 static int rsi_register_rates_channels(struct rsi_hw *adapter, int band)
 194 {
 195         struct ieee80211_supported_band *sbands = &adapter->sbands[band];
 196         void *channels = NULL;
 197
 198         if (band == NL80211_BAND_2GHZ) {
 199                 channels = kmemdup(rsi_2ghz_channels, sizeof(rsi_2ghz_channels),
 200                                    GFP_KERNEL);
 201                 if (!channels)
 202                         return -ENOMEM;
 203                 sbands->band = NL80211_BAND_2GHZ;
 204                 sbands->n_channels = ARRAY_SIZE(rsi_2ghz_channels);
 205                 sbands->bitrates = rsi_rates;
 206                 sbands->n_bitrates = ARRAY_SIZE(rsi_rates);
 207         } else {
 208                 channels = kmemdup(rsi_5ghz_channels, sizeof(rsi_5ghz_channels),
 209                                    GFP_KERNEL);
 210                 if (!channels)
 211                         return -ENOMEM;
 212                 sbands->band = NL80211_BAND_5GHZ;
 213                 sbands->n_channels = ARRAY_SIZE(rsi_5ghz_channels);
 214                 sbands->bitrates = &rsi_rates[4];
 215                 sbands->n_bitrates = ARRAY_SIZE(rsi_rates) - 4;
 216         }
 217
 218         sbands->channels = channels;
 219
 220         memset(&sbands->ht_cap, 0, sizeof(struct ieee80211_sta_ht_cap));
 221         sbands->ht_cap.ht_supported = true;
 222         sbands->ht_cap.cap = (IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
 223                               IEEE80211_HT_CAP_SGI_20 |
 224                               IEEE80211_HT_CAP_SGI_40);
 225         sbands->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K;
 226         sbands->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
 227         sbands->ht_cap.mcs.rx_mask[0] = 0xff;
 228         sbands->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 229         /* sbands->ht_cap.mcs.rx_highest = 0x82; */
 230         return 0;
 231 }
 232
 233 /**
 234  * rsi_mac80211_detach() - This function is used to de-initialize the
 235  *                         Mac80211 stack.
 236  * @adapter: Pointer to the adapter structure.
 237  *
 238  * Return: None.
 239  */
 240 void rsi_mac80211_detach(struct rsi_hw *adapter)
 241 {
 242         struct ieee80211_hw *hw = adapter->hw;
 243         enum nl80211_band band;
 244
 245         if (hw) {
 246                 ieee80211_stop_queues(hw);
 247                 ieee80211_unregister_hw(hw);
 248                 ieee80211_free_hw(hw);
 249                 adapter->hw = NULL;
 250         }
 251
 252         for (band = 0; band < NUM_NL80211_BANDS; band++) {
 253                 struct ieee80211_supported_band *sband =
 254                                         &adapter->sbands[band];
 255
 256                 kfree(sband->channels);
 257         }
 258
 259 #ifdef CONFIG_RSI_DEBUGFS
 260         rsi_remove_dbgfs(adapter);
 261         kfree(adapter->dfsentry);
 262 #endif
 263 }
 264 EXPORT_SYMBOL_GPL(rsi_mac80211_detach);
 265
 266 /**
 267  * rsi_indicate_tx_status() - This function indicates the transmit status.
 268  * @adapter: Pointer to the adapter structure.
 269  * @skb: Pointer to the socket buffer structure.
 270  * @status: Status
 271  *
 272  * Return: None.
 273  */
 274 void rsi_indicate_tx_status(struct rsi_hw *adapter,
 275                             struct sk_buff *skb,
 276                             int status)
 277 {
 278         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 279         struct skb_info *tx_params;
 280
 281         if (!adapter->hw) {
 282                 rsi_dbg(ERR_ZONE, "##### No MAC #####\n");
 283                 return;
 284         }
 285
 286         if (!status)
 287                 info->flags |= IEEE80211_TX_STAT_ACK;
 288
 289         tx_params = (struct skb_info *)info->driver_data;
 290         skb_pull(skb, tx_params->internal_hdr_size);
 291         memset(info->driver_data, 0, IEEE80211_TX_INFO_DRIVER_DATA_SIZE);
 292
 293         ieee80211_tx_status_irqsafe(adapter->hw, skb);
 294 }
 295
 296 /**
 297  * rsi_mac80211_tx() - This is the handler that 802.11 module calls for each
 298  *                     transmitted frame.SKB contains the buffer starting
 299  *                     from the IEEE 802.11 header.
 300  * @hw: Pointer to the ieee80211_hw structure.
 301  * @control: Pointer to the ieee80211_tx_control structure
 302  * @skb: Pointer to the socket buffer structure.
 303  *
 304  * Return: None
 305  */
 306 static void rsi_mac80211_tx(struct ieee80211_hw *hw,
 307                             struct ieee80211_tx_control *control,
 308                             struct sk_buff *skb)
 309 {
 310         struct rsi_hw *adapter = hw->priv;
 311         struct rsi_common *common = adapter->priv;
 312
 313         rsi_core_xmit(common, skb);
 314 }
 315
 316 /**
 317  * rsi_mac80211_start() - This is first handler that 802.11 module calls, since
 318  *                        the driver init is complete by then, just
 319  *                        returns success.
 320  * @hw: Pointer to the ieee80211_hw structure.
 321  *
 322  * Return: 0 as success.
 323  */
 324 static int rsi_mac80211_start(struct ieee80211_hw *hw)
 325 {
 326         struct rsi_hw *adapter = hw->priv;
 327         struct rsi_common *common = adapter->priv;
 328
 329         rsi_dbg(ERR_ZONE, "===> Interface UP <===\n");
 330         mutex_lock(&common->mutex);
 331         if (common->hibernate_resume) {
 332                 common->reinit_hw = true;
 333                 adapter->host_intf_ops->reinit_device(adapter);
 334                 wait_for_completion(&adapter->priv->wlan_init_completion);
 335         }
 336         common->iface_down = false;
 337         wiphy_rfkill_start_polling(hw->wiphy);
 338         rsi_send_rx_filter_frame(common, 0);
 339         mutex_unlock(&common->mutex);
 340
 341         return 0;
 342 }
 343
 344 /**
 345  * rsi_mac80211_stop() - This is the last handler that 802.11 module calls.
 346  * @hw: Pointer to the ieee80211_hw structure.
 347  *
 348  * Return: None.
 349  */
 350 static void rsi_mac80211_stop(struct ieee80211_hw *hw)
 351 {
 352         struct rsi_hw *adapter = hw->priv;
 353         struct rsi_common *common = adapter->priv;
 354
 355         rsi_dbg(ERR_ZONE, "===> Interface DOWN <===\n");
 356         mutex_lock(&common->mutex);
 357         common->iface_down = true;
 358         wiphy_rfkill_stop_polling(hw->wiphy);
 359
 360         /* Block all rx frames */
 361         rsi_send_rx_filter_frame(common, 0xffff);
 362
 363         mutex_unlock(&common->mutex);
 364 }
 365
 366 static int rsi_map_intf_mode(enum nl80211_iftype vif_type)
 367 {
 368         switch (vif_type) {
 369         case NL80211_IFTYPE_STATION:
 370                 return RSI_OPMODE_STA;
 371         case NL80211_IFTYPE_AP:
 372                 return RSI_OPMODE_AP;
 373         case NL80211_IFTYPE_P2P_DEVICE:
 374                 return RSI_OPMODE_P2P_CLIENT;
 375         case NL80211_IFTYPE_P2P_CLIENT:
 376                 return RSI_OPMODE_P2P_CLIENT;
 377         case NL80211_IFTYPE_P2P_GO:
 378                 return RSI_OPMODE_P2P_GO;
 379         default:
 380                 return RSI_OPMODE_UNSUPPORTED;
 381         }
 382 }
 383
 384 /**
 385  * rsi_mac80211_add_interface() - This function is called when a netdevice
 386  *                                attached to the hardware is enabled.
 387  * @hw: Pointer to the ieee80211_hw structure.
 388  * @vif: Pointer to the ieee80211_vif structure.
 389  *
 390  * Return: ret: 0 on success, negative error code on failure.
 391  */
 392 static int rsi_mac80211_add_interface(struct ieee80211_hw *hw,
 393                                       struct ieee80211_vif *vif)
 394 {
 395         struct rsi_hw *adapter = hw->priv;
 396         struct rsi_common *common = adapter->priv;
 397         struct vif_priv *vif_info = (struct vif_priv *)vif->drv_priv;
 398         enum opmode intf_mode;
 399         enum vap_status vap_status;
 400         int vap_idx = -1, i;
 401
 402         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
 403         mutex_lock(&common->mutex);
 404
 405         intf_mode = rsi_map_intf_mode(vif->type);
 406         if (intf_mode == RSI_OPMODE_UNSUPPORTED) {
 407                 rsi_dbg(ERR_ZONE,
 408                         "%s: Interface type %d not supported\n", __func__,
 409                         vif->type);
 410                 mutex_unlock(&common->mutex);
 411                 return -EOPNOTSUPP;
 412         }
 413         if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) ||
 414             (vif->type == NL80211_IFTYPE_P2P_CLIENT) ||
 415             (vif->type == NL80211_IFTYPE_P2P_GO))
 416                 common->p2p_enabled = true;
 417
 418         /* Get free vap index */
 419         for (i = 0; i < RSI_MAX_VIFS; i++) {
 420                 if (!adapter->vifs[i] ||
 421                     !memcmp(vif->addr, adapter->vifs[i]->addr, ETH_ALEN)) {
 422                         vap_idx = i;
 423                         break;
 424                 }
 425         }
 426         if (vap_idx < 0) {
 427                 rsi_dbg(ERR_ZONE, "Reject: Max VAPs reached\n");
 428                 mutex_unlock(&common->mutex);
 429                 return -EOPNOTSUPP;
 430         }
 431         vif_info->vap_id = vap_idx;
 432         adapter->vifs[vap_idx] = vif;
 433         adapter->sc_nvifs++;
 434         vap_status = VAP_ADD;
 435
 436         if (rsi_set_vap_capabilities(common, intf_mode, vif->addr,
 437                                      vif_info->vap_id, vap_status)) {
 438                 rsi_dbg(ERR_ZONE, "Failed to set VAP capabilities\n");
 439                 mutex_unlock(&common->mutex);
 440                 return -EINVAL;
 441         }
 442
 443         if ((vif->type == NL80211_IFTYPE_AP) ||
 444             (vif->type == NL80211_IFTYPE_P2P_GO)) {
 445                 rsi_send_rx_filter_frame(common, DISALLOW_BEACONS);
 446                 for (i = 0; i < common->max_stations; i++)
 447                         common->stations[i].sta = NULL;
 448         }
 449
 450         mutex_unlock(&common->mutex);
 451
 452         return 0;
 453 }
 454
 455 /**
 456  * rsi_mac80211_remove_interface() - This function notifies driver that an
 457  *                                   interface is going down.
 458  * @hw: Pointer to the ieee80211_hw structure.
 459  * @vif: Pointer to the ieee80211_vif structure.
 460  *
 461  * Return: None.
 462  */
 463 static void rsi_mac80211_remove_interface(struct ieee80211_hw *hw,
 464                                           struct ieee80211_vif *vif)
 465 {
 466         struct rsi_hw *adapter = hw->priv;
 467         struct rsi_common *common = adapter->priv;
 468         enum opmode opmode;
 469         int i;
 470
 471         rsi_dbg(INFO_ZONE, "Remove Interface Called\n");
 472
 473         mutex_lock(&common->mutex);
 474
 475         if (adapter->sc_nvifs <= 0) {
 476                 mutex_unlock(&common->mutex);
 477                 return;
 478         }
 479
 480         opmode = rsi_map_intf_mode(vif->type);
 481         if (opmode == RSI_OPMODE_UNSUPPORTED) {
 482                 rsi_dbg(ERR_ZONE, "Opmode error : %d\n", opmode);
 483                 mutex_unlock(&common->mutex);
 484                 return;
 485         }
 486         for (i = 0; i < RSI_MAX_VIFS; i++) {
 487                 if (!adapter->vifs[i])
 488                         continue;
 489                 if (vif == adapter->vifs[i]) {
 490                         rsi_set_vap_capabilities(common, opmode, vif->addr,
 491                                                  i, VAP_DELETE);
 492                         adapter->sc_nvifs--;
 493                         adapter->vifs[i] = NULL;
 494                 }
 495         }
 496         mutex_unlock(&common->mutex);
 497 }
 498
 499 /**
 500  * rsi_channel_change() - This function is a performs the checks
 501  *                        required for changing a channel and sets
 502  *                        the channel accordingly.
 503  * @hw: Pointer to the ieee80211_hw structure.
 504  *
 505  * Return: 0 on success, negative error code on failure.
 506  */
 507 static int rsi_channel_change(struct ieee80211_hw *hw)
 508 {
 509         struct rsi_hw *adapter = hw->priv;
 510         struct rsi_common *common = adapter->priv;
 511         int status = -EOPNOTSUPP;
 512         struct ieee80211_channel *curchan = hw->conf.chandef.chan;
 513         u16 channel = curchan->hw_value;
 514         struct ieee80211_vif *vif;
 515         struct ieee80211_bss_conf *bss;
 516         bool assoc = false;
 517         int i;
 518
 519         rsi_dbg(INFO_ZONE,
 520                 "%s: Set channel: %d MHz type: %d channel_no %d\n",
 521                 __func__, curchan->center_freq,
 522                 curchan->flags, channel);
 523
 524         for (i = 0; i < RSI_MAX_VIFS; i++) {
 525                 vif = adapter->vifs[i];
 526                 if (!vif)
 527                         continue;
 528                 if (vif->type == NL80211_IFTYPE_STATION) {
 529                         bss = &vif->bss_conf;
 530                         if (bss->assoc) {
 531                                 assoc = true;
 532                                 break;
 533                         }
 534                 }
 535         }
 536         if (assoc) {
 537                 if (!common->hw_data_qs_blocked &&
 538                     (rsi_get_connected_channel(vif) != channel)) {
 539                         rsi_dbg(INFO_ZONE, "blk data q %d\n", channel);
 540                         if (!rsi_send_block_unblock_frame(common, true))
 541                                 common->hw_data_qs_blocked = true;
 542                 }
 543         }
 544
 545         status = rsi_band_check(common, curchan);
 546         if (!status)
 547                 status = rsi_set_channel(adapter->priv, curchan);
 548
 549         if (assoc) {
 550                 if (common->hw_data_qs_blocked &&
 551                     (rsi_get_connected_channel(vif) == channel)) {
 552                         rsi_dbg(INFO_ZONE, "unblk data q %d\n", channel);
 553                         if (!rsi_send_block_unblock_frame(common, false))
 554                                 common->hw_data_qs_blocked = false;
 555                 }
 556         }
 557
 558         return status;
 559 }
 560
 561 /**
 562  * rsi_config_power() - This function configures tx power to device
 563  * @hw: Pointer to the ieee80211_hw structure.
 564  *
 565  * Return: 0 on success, negative error code on failure.
 566  */
 567 static int rsi_config_power(struct ieee80211_hw *hw)
 568 {
 569         struct rsi_hw *adapter = hw->priv;
 570         struct rsi_common *common = adapter->priv;
 571         struct ieee80211_conf *conf = &hw->conf;
 572
 573         if (adapter->sc_nvifs <= 0) {
 574                 rsi_dbg(ERR_ZONE, "%s: No virtual interface found\n", __func__);
 575                 return -EINVAL;
 576         }
 577
 578         rsi_dbg(INFO_ZONE,
 579                 "%s: Set tx power: %d dBM\n", __func__, conf->power_level);
 580
 581         if (conf->power_level == common->tx_power)
 582                 return 0;
 583
 584         common->tx_power = conf->power_level;
 585
 586         return rsi_send_radio_params_update(common);
 587 }
 588
 589 /**
 590  * rsi_mac80211_config() - This function is a handler for configuration
 591  *                         requests. The stack calls this function to
 592  *                         change hardware configuration, e.g., channel.
 593  * @hw: Pointer to the ieee80211_hw structure.
 594  * @changed: Changed flags set.
 595  *
 596  * Return: 0 on success, negative error code on failure.
 597  */
 598 static int rsi_mac80211_config(struct ieee80211_hw *hw,
 599                                u32 changed)
 600 {
 601         struct rsi_hw *adapter = hw->priv;
 602         struct rsi_common *common = adapter->priv;
 603         struct ieee80211_conf *conf = &hw->conf;
 604         int status = -EOPNOTSUPP;
 605
 606         mutex_lock(&common->mutex);
 607
 608         if (changed & IEEE80211_CONF_CHANGE_CHANNEL)
 609                 status = rsi_channel_change(hw);
 610
 611         /* tx power */
 612         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 613                 rsi_dbg(INFO_ZONE, "%s: Configuring Power\n", __func__);
 614                 status = rsi_config_power(hw);
 615         }
 616
 617         /* Power save parameters */
 618         if (changed & IEEE80211_CONF_CHANGE_PS) {
 619                 struct ieee80211_vif *vif, *sta_vif = NULL;
 620                 unsigned long flags;
 621                 int i, set_ps = 1;
 622
 623                 for (i = 0; i < RSI_MAX_VIFS; i++) {
 624                         vif = adapter->vifs[i];
 625                         if (!vif)
 626                                 continue;
 627                         /* Don't go to power save if AP vap exists */
 628                         if ((vif->type == NL80211_IFTYPE_AP) ||
 629                             (vif->type == NL80211_IFTYPE_P2P_GO)) {
 630                                 set_ps = 0;
 631                                 break;
 632                         }
 633                         if ((vif->type == NL80211_IFTYPE_STATION ||
 634                              vif->type == NL80211_IFTYPE_P2P_CLIENT) &&
 635                             (!sta_vif || vif->bss_conf.assoc))
 636                                 sta_vif = vif;
 637                 }
 638                 if (set_ps && sta_vif) {
 639                         spin_lock_irqsave(&adapter->ps_lock, flags);
 640                         if (conf->flags & IEEE80211_CONF_PS)
 641                                 rsi_enable_ps(adapter, sta_vif);
 642                         else
 643                                 rsi_disable_ps(adapter, sta_vif);
 644                         spin_unlock_irqrestore(&adapter->ps_lock, flags);
 645                 }
 646         }
 647
 648         /* RTS threshold */
 649         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 650                 rsi_dbg(INFO_ZONE, "RTS threshold\n");
 651                 if ((common->rts_threshold) <= IEEE80211_MAX_RTS_THRESHOLD) {
 652                         rsi_dbg(INFO_ZONE,
 653                                 "%s: Sending vap updates....\n", __func__);
 654                         status = rsi_send_vap_dynamic_update(common);
 655                 }
 656         }
 657         mutex_unlock(&common->mutex);
 658
 659         return status;
 660 }
 661
 662 /**
 663  * rsi_get_connected_channel() - This function is used to get the current
 664  *                               connected channel number.
 665  * @adapter: Pointer to the adapter structure.
 666  *
 667  * Return: Current connected AP's channel number is returned.
 668  */
 669 u16 rsi_get_connected_channel(struct ieee80211_vif *vif)
 670 {
 671         struct ieee80211_bss_conf *bss;
 672         struct ieee80211_channel *channel;
 673
 674         if (!vif)
 675                 return 0;
 676
 677         bss = &vif->bss_conf;
 678         channel = bss->chandef.chan;
 679
 680         if (!channel)
 681                 return 0;
 682
 683         return channel->hw_value;
 684 }
 685
 686 static void rsi_switch_channel(struct rsi_hw *adapter,
 687                                struct ieee80211_vif *vif)
 688 {
 689         struct rsi_common *common = adapter->priv;
 690         struct ieee80211_channel *channel;
 691
 692         if (common->iface_down)
 693                 return;
 694         if (!vif)
 695                 return;
 696
 697         channel = vif->bss_conf.chandef.chan;
 698
 699         if (!channel)
 700                 return;
 701
 702         rsi_band_check(common, channel);
 703         rsi_set_channel(common, channel);
 704         rsi_dbg(INFO_ZONE, "Switched to channel - %d\n", channel->hw_value);
 705 }
 706
 707 /**
 708  * rsi_mac80211_bss_info_changed() - This function is a handler for config
 709  *                                   requests related to BSS parameters that
 710  *                                   may vary during BSS's lifespan.
 711  * @hw: Pointer to the ieee80211_hw structure.
 712  * @vif: Pointer to the ieee80211_vif structure.
 713  * @bss_conf: Pointer to the ieee80211_bss_conf structure.
 714  * @changed: Changed flags set.
 715  *
 716  * Return: None.
 717  */
 718 static void rsi_mac80211_bss_info_changed(struct ieee80211_hw *hw,
 719                                           struct ieee80211_vif *vif,
 720                                           struct ieee80211_bss_conf *bss_conf,
 721                                           u32 changed)
 722 {
 723         struct rsi_hw *adapter = hw->priv;
 724         struct rsi_common *common = adapter->priv;
 725         struct ieee80211_bss_conf *bss = &vif->bss_conf;
 726         struct ieee80211_conf *conf = &hw->conf;
 727         u16 rx_filter_word = 0;
 728
 729         mutex_lock(&common->mutex);
 730         if (changed & BSS_CHANGED_ASSOC) {
 731                 rsi_dbg(INFO_ZONE, "%s: Changed Association status: %d\n",
 732                         __func__, bss_conf->assoc);
 733                 if (bss_conf->assoc) {
 734                         /* Send the RX filter frame */
 735                         rx_filter_word = (ALLOW_DATA_ASSOC_PEER |
 736                                           ALLOW_CTRL_ASSOC_PEER |
 737                                           ALLOW_MGMT_ASSOC_PEER);
 738                         rsi_send_rx_filter_frame(common, rx_filter_word);
 739                 }
 740                 rsi_inform_bss_status(common,
 741                                       RSI_OPMODE_STA,
 742                                       bss_conf->assoc,
 743                                       bss_conf->bssid,
 744                                       bss_conf->qos,
 745                                       bss_conf->aid,
 746                                       NULL, 0,
 747                                       bss_conf->assoc_capability, vif);
 748                 adapter->ps_info.dtim_interval_duration = bss->dtim_period;
 749                 adapter->ps_info.listen_interval = conf->listen_interval;
 750
 751         /* If U-APSD is updated, send ps parameters to firmware */
 752         if (bss->assoc) {
 753                 if (common->uapsd_bitmap) {
 754                         rsi_dbg(INFO_ZONE, "Configuring UAPSD\n");
 755                         rsi_conf_uapsd(adapter, vif);
 756                 }
 757         } else {
 758                 common->uapsd_bitmap = 0;
 759         }
 760         }
 761
 762         if (changed & BSS_CHANGED_CQM) {
 763                 common->cqm_info.last_cqm_event_rssi = 0;
 764                 common->cqm_info.rssi_thold = bss_conf->cqm_rssi_thold;
 765                 common->cqm_info.rssi_hyst = bss_conf->cqm_rssi_hyst;
 766                 rsi_dbg(INFO_ZONE, "RSSI throld & hysteresis are: %d %d\n",
 767                         common->cqm_info.rssi_thold,
 768                         common->cqm_info.rssi_hyst);
 769         }
 770
 771         if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
 772             ((vif->type == NL80211_IFTYPE_AP) ||
 773              (vif->type == NL80211_IFTYPE_P2P_GO))) {
 774                 if (bss->enable_beacon) {
 775                         rsi_dbg(INFO_ZONE, "===> BEACON ENABLED <===\n");
 776                         common->beacon_enabled = 1;
 777                 } else {
 778                         rsi_dbg(INFO_ZONE, "===> BEACON DISABLED <===\n");
 779                         common->beacon_enabled = 0;
 780                 }
 781         }
 782
 783         mutex_unlock(&common->mutex);
 784 }
 785
 786 /**
 787  * rsi_mac80211_conf_filter() - This function configure the device's RX filter.
 788  * @hw: Pointer to the ieee80211_hw structure.
 789  * @changed: Changed flags set.
 790  * @total_flags: Total initial flags set.
 791  * @multicast: Multicast.
 792  *
 793  * Return: None.
 794  */
 795 static void rsi_mac80211_conf_filter(struct ieee80211_hw *hw,
 796                                      u32 changed_flags,
 797                                      u32 *total_flags,
 798                                      u64 multicast)
 799 {
 800         /* Not doing much here as of now */
 801         *total_flags &= RSI_SUPP_FILTERS;
 802 }
 803
 804 /**
 805  * rsi_mac80211_conf_tx() - This function configures TX queue parameters
 806  *                          (EDCF (aifs, cw_min, cw_max), bursting)
 807  *                          for a hardware TX queue.
 808  * @hw: Pointer to the ieee80211_hw structure
 809  * @vif: Pointer to the ieee80211_vif structure.
 810  * @queue: Queue number.
 811  * @params: Pointer to ieee80211_tx_queue_params structure.
 812  *
 813  * Return: 0 on success, negative error code on failure.
 814  */
 815 static int rsi_mac80211_conf_tx(struct ieee80211_hw *hw,
 816                                 struct ieee80211_vif *vif, u16 queue,
 817                                 const struct ieee80211_tx_queue_params *params)
 818 {
 819         struct rsi_hw *adapter = hw->priv;
 820         struct rsi_common *common = adapter->priv;
 821         u8 idx = 0;
 822
 823         if (queue >= IEEE80211_NUM_ACS)
 824                 return 0;
 825
 826         rsi_dbg(INFO_ZONE,
 827                 "%s: Conf queue %d, aifs: %d, cwmin: %d cwmax: %d, txop: %d\n",
 828                 __func__, queue, params->aifs,
 829                 params->cw_min, params->cw_max, params->txop);
 830
 831         mutex_lock(&common->mutex);
 832         /* Map into the way the f/w expects */
 833         switch (queue) {
 834         case IEEE80211_AC_VO:
 835                 idx = VO_Q;
 836                 break;
 837         case IEEE80211_AC_VI:
 838                 idx = VI_Q;
 839                 break;
 840         case IEEE80211_AC_BE:
 841                 idx = BE_Q;
 842                 break;
 843         case IEEE80211_AC_BK:
 844                 idx = BK_Q;
 845                 break;
 846         default:
 847                 idx = BE_Q;
 848                 break;
 849         }
 850
 851         memcpy(&common->edca_params[idx],
 852                params,
 853                sizeof(struct ieee80211_tx_queue_params));
 854
 855         if (params->uapsd)
 856                 common->uapsd_bitmap |= idx;
 857         else
 858                 common->uapsd_bitmap &= (~idx);
 859
 860         mutex_unlock(&common->mutex);
 861
 862         return 0;
 863 }
 864
 865 /**
 866  * rsi_hal_key_config() - This function loads the keys into the firmware.
 867  * @hw: Pointer to the ieee80211_hw structure.
 868  * @vif: Pointer to the ieee80211_vif structure.
 869  * @key: Pointer to the ieee80211_key_conf structure.
 870  *
 871  * Return: status: 0 on success, negative error codes on failure.
 872  */
 873 static int rsi_hal_key_config(struct ieee80211_hw *hw,
 874                               struct ieee80211_vif *vif,
 875                               struct ieee80211_key_conf *key,
 876                               struct ieee80211_sta *sta)
 877 {
 878         struct rsi_hw *adapter = hw->priv;
 879         struct rsi_sta *rsta = NULL;
 880         int status;
 881         u8 key_type;
 882         s16 sta_id = 0;
 883
 884         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
 885                 key_type = RSI_PAIRWISE_KEY;
 886         else
 887                 key_type = RSI_GROUP_KEY;
 888
 889         rsi_dbg(ERR_ZONE, "%s: Cipher 0x%x key_type: %d key_len: %d\n",
 890                 __func__, key->cipher, key_type, key->keylen);
 891
 892         if ((vif->type == NL80211_IFTYPE_AP) ||
 893             (vif->type == NL80211_IFTYPE_P2P_GO)) {
 894                 if (sta) {
 895                         rsta = rsi_find_sta(adapter->priv, sta->addr);
 896                         if (rsta)
 897                                 sta_id = rsta->sta_id;
 898                 }
 899                 adapter->priv->key = key;
 900         } else {
 901                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) ||
 902                     (key->cipher == WLAN_CIPHER_SUITE_WEP40)) {
 903                         status = rsi_hal_load_key(adapter->priv,
 904                                                   key->key,
 905                                                   key->keylen,
 906                                                   RSI_PAIRWISE_KEY,
 907                                                   key->keyidx,
 908                                                   key->cipher,
 909                                                   sta_id,
 910                                                   vif);
 911                         if (status)
 912                                 return status;
 913                 }
 914         }
 915
 916         status = rsi_hal_load_key(adapter->priv,
 917                                   key->key,
 918                                   key->keylen,
 919                                   key_type,
 920                                   key->keyidx,
 921                                   key->cipher,
 922                                   sta_id,
 923                                   vif);
 924         if (status)
 925                 return status;
 926
 927         if (vif->type == NL80211_IFTYPE_STATION &&
 928             (key->cipher == WLAN_CIPHER_SUITE_WEP104 ||
 929              key->cipher == WLAN_CIPHER_SUITE_WEP40)) {
 930                 if (!rsi_send_block_unblock_frame(adapter->priv, false))
 931                         adapter->priv->hw_data_qs_blocked = false;
 932         }
 933
 934         return 0;
 935 }
 936
 937 /**
 938  * rsi_mac80211_set_key() - This function sets type of key to be loaded.
 939  * @hw: Pointer to the ieee80211_hw structure.
 940  * @cmd: enum set_key_cmd.
 941  * @vif: Pointer to the ieee80211_vif structure.
 942  * @sta: Pointer to the ieee80211_sta structure.
 943  * @key: Pointer to the ieee80211_key_conf structure.
 944  *
 945  * Return: status: 0 on success, negative error code on failure.
 946  */
 947 static int rsi_mac80211_set_key(struct ieee80211_hw *hw,
 948                                 enum set_key_cmd cmd,
 949                                 struct ieee80211_vif *vif,
 950                                 struct ieee80211_sta *sta,
 951                                 struct ieee80211_key_conf *key)
 952 {
 953         struct rsi_hw *adapter = hw->priv;
 954         struct rsi_common *common = adapter->priv;
 955         struct security_info *secinfo = &common->secinfo;
 956         int status;
 957
 958         mutex_lock(&common->mutex);
 959         switch (cmd) {
 960         case SET_KEY:
 961                 status = rsi_hal_key_config(hw, vif, key, sta);
 962                 if (status) {
 963                         mutex_unlock(&common->mutex);
 964                         return status;
 965                 }
 966
 967                 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
 968                         secinfo->ptk_cipher = key->cipher;
 969                 else
 970                         secinfo->gtk_cipher = key->cipher;
 971
 972                 key->hw_key_idx = key->keyidx;
 973                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 974
 975                 rsi_dbg(ERR_ZONE, "%s: RSI set_key\n", __func__);
 976                 break;
 977
 978         case DISABLE_KEY:
 979                 rsi_dbg(ERR_ZONE, "%s: RSI del key\n", __func__);
 980                 memset(key, 0, sizeof(struct ieee80211_key_conf));
 981                 status = rsi_hal_key_config(hw, vif, key, sta);
 982                 break;
 983
 984         default:
 985                 status = -EOPNOTSUPP;
 986                 break;
 987         }
 988
 989         mutex_unlock(&common->mutex);
 990         return status;
 991 }
 992
 993 /**
 994  * rsi_mac80211_ampdu_action() - This function selects the AMPDU action for
 995  *                               the corresponding mlme_action flag and
 996  *                               informs the f/w regarding this.
 997  * @hw: Pointer to the ieee80211_hw structure.
 998  * @vif: Pointer to the ieee80211_vif structure.
 999  * @params: Pointer to A-MPDU action parameters
1000  *
1001  * Return: status: 0 on success, negative error code on failure.
1002  */
1003 static int rsi_mac80211_ampdu_action(struct ieee80211_hw *hw,
1004                                      struct ieee80211_vif *vif,
1005                                      struct ieee80211_ampdu_params *params)
1006 {
1007         int status = -EOPNOTSUPP;
1008         struct rsi_hw *adapter = hw->priv;
1009         struct rsi_common *common = adapter->priv;
1010         struct rsi_sta *rsta = NULL;
1011         u16 seq_no = 0, seq_start = 0;
1012         u8 ii = 0;
1013         struct ieee80211_sta *sta = params->sta;
1014         u8 sta_id = 0;
1015         enum ieee80211_ampdu_mlme_action action = params->action;
1016         u16 tid = params->tid;
1017         u16 *ssn = &params->ssn;
1018         u8 buf_size = params->buf_size;
1019
1020         for (ii = 0; ii < RSI_MAX_VIFS; ii++) {
1021                 if (vif == adapter->vifs[ii])
1022                         break;
1023         }
1024
1025         mutex_lock(&common->mutex);
1026
1027         if (ssn != NULL)
1028                 seq_no = *ssn;
1029
1030         if ((vif->type == NL80211_IFTYPE_AP) ||
1031             (vif->type == NL80211_IFTYPE_P2P_GO)) {
1032                 rsta = rsi_find_sta(common, sta->addr);
1033                 if (!rsta) {
1034                         rsi_dbg(ERR_ZONE, "No station mapped\n");
1035                         status = 0;
1036                         goto unlock;
1037                 }
1038                 sta_id = rsta->sta_id;
1039         }
1040
1041         rsi_dbg(INFO_ZONE,
1042                 "%s: AMPDU action tid=%d ssn=0x%x, buf_size=%d sta_id=%d\n",
1043                 __func__, tid, seq_no, buf_size, sta_id);
1044
1045         switch (action) {
1046         case IEEE80211_AMPDU_RX_START:
1047                 status = rsi_send_aggregation_params_frame(common,
1048                                                            tid,
1049                                                            seq_no,
1050                                                            buf_size,
1051                                                            STA_RX_ADDBA_DONE,
1052                                                            sta_id);
1053                 break;
1054
1055         case IEEE80211_AMPDU_RX_STOP:
1056                 status = rsi_send_aggregation_params_frame(common,
1057                                                            tid,
1058                                                            0,
1059                                                            buf_size,
1060                                                            STA_RX_DELBA,
1061                                                            sta_id);
1062                 break;
1063
1064         case IEEE80211_AMPDU_TX_START:
1065                 if ((vif->type == NL80211_IFTYPE_STATION) ||
1066                     (vif->type == NL80211_IFTYPE_P2P_CLIENT))
1067                         common->vif_info[ii].seq_start = seq_no;
1068                 else if ((vif->type == NL80211_IFTYPE_AP) ||
1069                          (vif->type == NL80211_IFTYPE_P2P_GO))
1070                         rsta->seq_start[tid] = seq_no;
1071                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1072                 status = 0;
1073                 break;
1074
1075         case IEEE80211_AMPDU_TX_STOP_CONT:
1076         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1077         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1078                 status = rsi_send_aggregation_params_frame(common,
1079                                                            tid,
1080                                                            seq_no,
1081                                                            buf_size,
1082                                                            STA_TX_DELBA,
1083                                                            sta_id);
1084                 if (!status)
1085                         ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1086                 break;
1087
1088         case IEEE80211_AMPDU_TX_OPERATIONAL:
1089                 if ((vif->type == NL80211_IFTYPE_STATION) ||
1090                     (vif->type == NL80211_IFTYPE_P2P_CLIENT))
1091                         seq_start = common->vif_info[ii].seq_start;
1092                 else if ((vif->type == NL80211_IFTYPE_AP) ||
1093                          (vif->type == NL80211_IFTYPE_P2P_GO))
1094                         seq_start = rsta->seq_start[tid];
1095                 status = rsi_send_aggregation_params_frame(common,
1096                                                            tid,
1097                                                            seq_start,
1098                                                            buf_size,
1099                                                            STA_TX_ADDBA_DONE,
1100                                                            sta_id);
1101                 break;
1102
1103         default:
1104                 rsi_dbg(ERR_ZONE, "%s: Unknown AMPDU action\n", __func__);
1105                 break;
1106         }
1107
1108 unlock:
1109         mutex_unlock(&common->mutex);
1110         return status;
1111 }
1112
1113 /**
1114  * rsi_mac80211_set_rts_threshold() - This function sets rts threshold value.
1115  * @hw: Pointer to the ieee80211_hw structure.
1116  * @value: Rts threshold value.
1117  *
1118  * Return: 0 on success.
1119  */
1120 static int rsi_mac80211_set_rts_threshold(struct ieee80211_hw *hw,
1121                                           u32 value)
1122 {
1123         struct rsi_hw *adapter = hw->priv;
1124         struct rsi_common *common = adapter->priv;
1125
1126         mutex_lock(&common->mutex);
1127         common->rts_threshold = value;
1128         mutex_unlock(&common->mutex);
1129
1130         return 0;
1131 }
1132
1133 /**
1134  * rsi_mac80211_set_rate_mask() - This function sets bitrate_mask to be used.
1135  * @hw: Pointer to the ieee80211_hw structure
1136  * @vif: Pointer to the ieee80211_vif structure.
1137  * @mask: Pointer to the cfg80211_bitrate_mask structure.
1138  *
1139  * Return: 0 on success.
1140  */
1141 static int rsi_mac80211_set_rate_mask(struct ieee80211_hw *hw,
1142                                       struct ieee80211_vif *vif,
1143                                       const struct cfg80211_bitrate_mask *mask)
1144 {
1145         const unsigned int mcs_offset = ARRAY_SIZE(rsi_rates);
1146         struct rsi_hw *adapter = hw->priv;
1147         struct rsi_common *common = adapter->priv;
1148         int i;
1149
1150         mutex_lock(&common->mutex);
1151
1152         for (i = 0; i < ARRAY_SIZE(common->rate_config); i++) {
1153                 struct rsi_rate_config *cfg = &common->rate_config[i];
1154                 u32 bm;
1155
1156                 bm = mask->control[i].legacy | (mask->control[i].ht_mcs[0] << mcs_offset);
1157                 if (hweight32(bm) == 1) { /* single rate */
1158                         int rate_index = ffs(bm) - 1;
1159
1160                         if (rate_index < mcs_offset)
1161                                 cfg->fixed_hw_rate = rsi_rates[rate_index].hw_value;
1162                         else
1163                                 cfg->fixed_hw_rate = rsi_mcsrates[rate_index - mcs_offset];
1164                         cfg->fixed_enabled = true;
1165                 } else {
1166                         cfg->configured_mask = bm;
1167                         cfg->fixed_enabled = false;
1168                 }
1169         }
1170
1171         mutex_unlock(&common->mutex);
1172
1173         return 0;
1174 }
1175
1176 /**
1177  * rsi_perform_cqm() - This function performs cqm.
1178  * @common: Pointer to the driver private structure.
1179  * @bssid: pointer to the bssid.
1180  * @rssi: RSSI value.
1181  */
1182 static void rsi_perform_cqm(struct rsi_common *common,
1183                             u8 *bssid,
1184                             s8 rssi,
1185                             struct ieee80211_vif *vif)
1186 {
1187         s8 last_event = common->cqm_info.last_cqm_event_rssi;
1188         int thold = common->cqm_info.rssi_thold;
1189         u32 hyst = common->cqm_info.rssi_hyst;
1190         enum nl80211_cqm_rssi_threshold_event event;
1191
1192         if (rssi < thold && (last_event == 0 || rssi < (last_event - hyst)))
1193                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
1194         else if (rssi > thold &&
1195                  (last_event == 0 || rssi > (last_event + hyst)))
1196                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
1197         else
1198                 return;
1199
1200         common->cqm_info.last_cqm_event_rssi = rssi;
1201         rsi_dbg(INFO_ZONE, "CQM: Notifying event: %d\n", event);
1202         ieee80211_cqm_rssi_notify(vif, event, rssi, GFP_KERNEL);
1203
1204         return;
1205 }
1206
1207 /**
1208  * rsi_fill_rx_status() - This function fills rx status in
1209  *                        ieee80211_rx_status structure.
1210  * @hw: Pointer to the ieee80211_hw structure.
1211  * @skb: Pointer to the socket buffer structure.
1212  * @common: Pointer to the driver private structure.
1213  * @rxs: Pointer to the ieee80211_rx_status structure.
1214  *
1215  * Return: None.
1216  */
1217 static void rsi_fill_rx_status(struct ieee80211_hw *hw,
1218                                struct sk_buff *skb,
1219                                struct rsi_common *common,
1220                                struct ieee80211_rx_status *rxs)
1221 {
1222         struct rsi_hw *adapter = common->priv;
1223         struct ieee80211_vif *vif;
1224         struct ieee80211_bss_conf *bss = NULL;
1225         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1226         struct skb_info *rx_params = (struct skb_info *)info->driver_data;
1227         struct ieee80211_hdr *hdr;
1228         char rssi = rx_params->rssi;
1229         u8 hdrlen = 0;
1230         u8 channel = rx_params->channel;
1231         s32 freq;
1232         int i;
1233
1234         hdr = ((struct ieee80211_hdr *)(skb->data));
1235         hdrlen = ieee80211_hdrlen(hdr->frame_control);
1236
1237         memset(info, 0, sizeof(struct ieee80211_tx_info));
1238
1239         rxs->signal = -(rssi);
1240
1241         rxs->band = common->band;
1242
1243         freq = ieee80211_channel_to_frequency(channel, rxs->band);
1244
1245         if (freq)
1246                 rxs->freq = freq;
1247
1248         if (ieee80211_has_protected(hdr->frame_control)) {
1249                 if (rsi_is_cipher_wep(common)) {
1250                         memmove(skb->data + 4, skb->data, hdrlen);
1251                         skb_pull(skb, 4);
1252                 } else {
1253                         memmove(skb->data + 8, skb->data, hdrlen);
1254                         skb_pull(skb, 8);
1255                         rxs->flag |= RX_FLAG_MMIC_STRIPPED;
1256                 }
1257                 rxs->flag |= RX_FLAG_DECRYPTED;
1258                 rxs->flag |= RX_FLAG_IV_STRIPPED;
1259         }
1260
1261         for (i = 0; i < RSI_MAX_VIFS; i++) {
1262                 vif = adapter->vifs[i];
1263                 if (!vif)
1264                         continue;
1265                 if (vif->type == NL80211_IFTYPE_STATION) {
1266                         bss = &vif->bss_conf;
1267                         break;
1268                 }
1269         }
1270         if (!bss)
1271                 return;
1272         /* CQM only for connected AP beacons, the RSSI is a weighted avg */
1273         if (bss->assoc && !(memcmp(bss->bssid, hdr->addr2, ETH_ALEN))) {
1274                 if (ieee80211_is_beacon(hdr->frame_control))
1275                         rsi_perform_cqm(common, hdr->addr2, rxs->signal, vif);
1276         }
1277
1278         return;
1279 }
1280
1281 /**
1282  * rsi_indicate_pkt_to_os() - This function sends recieved packet to mac80211.
1283  * @common: Pointer to the driver private structure.
1284  * @skb: Pointer to the socket buffer structure.
1285  *
1286  * Return: None.
1287  */
1288 void rsi_indicate_pkt_to_os(struct rsi_common *common,
1289                             struct sk_buff *skb)
1290 {
1291         struct rsi_hw *adapter = common->priv;
1292         struct ieee80211_hw *hw = adapter->hw;
1293         struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1294
1295         if ((common->iface_down) || (!adapter->sc_nvifs)) {
1296                 dev_kfree_skb(skb);
1297                 return;
1298         }
1299
1300         /* filling in the ieee80211_rx_status flags */
1301         rsi_fill_rx_status(hw, skb, common, rx_status);
1302
1303         ieee80211_rx_irqsafe(hw, skb);
1304 }
1305
1306 /**
1307  * rsi_mac80211_sta_add() - This function notifies driver about a peer getting
1308  *                          connected.
1309  * @hw: pointer to the ieee80211_hw structure.
1310  * @vif: Pointer to the ieee80211_vif structure.
1311  * @sta: Pointer to the ieee80211_sta structure.
1312  *
1313  * Return: 0 on success, negative error codes on failure.
1314  */
1315 static int rsi_mac80211_sta_add(struct ieee80211_hw *hw,
1316                                 struct ieee80211_vif *vif,
1317                                 struct ieee80211_sta *sta)
1318 {
1319         struct rsi_hw *adapter = hw->priv;
1320         struct rsi_common *common = adapter->priv;
1321         bool sta_exist = false;
1322         struct rsi_sta *rsta;
1323         int status = 0;
1324
1325         rsi_dbg(INFO_ZONE, "Station Add: %pM\n", sta->addr);
1326
1327         mutex_lock(&common->mutex);
1328
1329         if ((vif->type == NL80211_IFTYPE_AP) ||
1330             (vif->type == NL80211_IFTYPE_P2P_GO)) {
1331                 u8 cnt;
1332                 int sta_idx = -1;
1333                 int free_index = -1;
1334
1335                 /* Check if max stations reached */
1336                 if (common->num_stations >= common->max_stations) {
1337                         rsi_dbg(ERR_ZONE, "Reject: Max Stations exists\n");
1338                         status = -EOPNOTSUPP;
1339                         goto unlock;
1340                 }
1341                 for (cnt = 0; cnt < common->max_stations; cnt++) {
1342                         rsta = &common->stations[cnt];
1343
1344                         if (!rsta->sta) {
1345                                 if (free_index < 0)
1346                                         free_index = cnt;
1347                                 continue;
1348                         }
1349                         if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) {
1350                                 rsi_dbg(INFO_ZONE, "Station exists\n");
1351                                 sta_idx = cnt;
1352                                 sta_exist = true;
1353                                 break;
1354                         }
1355                 }
1356                 if (!sta_exist) {
1357                         if (free_index >= 0)
1358                                 sta_idx = free_index;
1359                 }
1360                 if (sta_idx < 0) {
1361                         rsi_dbg(ERR_ZONE,
1362                                 "%s: Some problem reaching here...\n",
1363                                 __func__);
1364                         status = -EINVAL;
1365                         goto unlock;
1366                 }
1367                 rsta = &common->stations[sta_idx];
1368                 rsta->sta = sta;
1369                 rsta->sta_id = sta_idx;
1370                 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1371                         rsta->start_tx_aggr[cnt] = false;
1372                 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1373                         rsta->seq_start[cnt] = 0;
1374                 if (!sta_exist) {
1375                         rsi_dbg(INFO_ZONE, "New Station\n");
1376
1377                         /* Send peer notify to device */
1378                         rsi_dbg(INFO_ZONE, "Indicate bss status to device\n");
1379                         rsi_inform_bss_status(common, RSI_OPMODE_AP, 1,
1380                                               sta->addr, sta->wme, sta->aid,
1381                                               sta, sta_idx, 0, vif);
1382
1383                         if (common->key) {
1384                                 struct ieee80211_key_conf *key = common->key;
1385
1386                                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) ||
1387                                     (key->cipher == WLAN_CIPHER_SUITE_WEP40))
1388                                         rsi_hal_load_key(adapter->priv,
1389                                                          key->key,
1390                                                          key->keylen,
1391                                                          RSI_PAIRWISE_KEY,
1392                                                          key->keyidx,
1393                                                          key->cipher,
1394                                                          sta_idx,
1395                                                          vif);
1396                         }
1397
1398                         common->num_stations++;
1399                 }
1400         }
1401
1402         if ((vif->type == NL80211_IFTYPE_STATION) ||
1403             (vif->type == NL80211_IFTYPE_P2P_CLIENT)) {
1404                 common->bitrate_mask[common->band] = sta->supp_rates[common->band];
1405                 common->vif_info[0].is_ht = sta->ht_cap.ht_supported;
1406                 if (sta->ht_cap.ht_supported) {
1407                         common->bitrate_mask[NL80211_BAND_2GHZ] =
1408                                         sta->supp_rates[NL80211_BAND_2GHZ];
1409                         if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ||
1410                             (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40))
1411                                 common->vif_info[0].sgi = true;
1412                         ieee80211_start_tx_ba_session(sta, 0, 0);
1413                 }
1414         }
1415
1416 unlock:
1417         mutex_unlock(&common->mutex);
1418
1419         return status;
1420 }
1421
1422 /**
1423  * rsi_mac80211_sta_remove() - This function notifies driver about a peer
1424  *                             getting disconnected.
1425  * @hw: Pointer to the ieee80211_hw structure.
1426  * @vif: Pointer to the ieee80211_vif structure.
1427  * @sta: Pointer to the ieee80211_sta structure.
1428  *
1429  * Return: 0 on success, negative error codes on failure.
1430  */
1431 static int rsi_mac80211_sta_remove(struct ieee80211_hw *hw,
1432                                    struct ieee80211_vif *vif,
1433                                    struct ieee80211_sta *sta)
1434 {
1435         struct rsi_hw *adapter = hw->priv;
1436         struct rsi_common *common = adapter->priv;
1437         struct ieee80211_bss_conf *bss = &vif->bss_conf;
1438         struct rsi_sta *rsta;
1439
1440         rsi_dbg(INFO_ZONE, "Station Remove: %pM\n", sta->addr);
1441
1442         mutex_lock(&common->mutex);
1443
1444         if ((vif->type == NL80211_IFTYPE_AP) ||
1445             (vif->type == NL80211_IFTYPE_P2P_GO)) {
1446                 u8 sta_idx, cnt;
1447
1448                 /* Send peer notify to device */
1449                 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n");
1450                 for (sta_idx = 0; sta_idx < common->max_stations; sta_idx++) {
1451                         rsta = &common->stations[sta_idx];
1452
1453                         if (!rsta->sta)
1454                                 continue;
1455                         if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) {
1456                                 rsi_inform_bss_status(common, RSI_OPMODE_AP, 0,
1457                                                       sta->addr, sta->wme,
1458                                                       sta->aid, sta, sta_idx,
1459                                                       0, vif);
1460                                 rsta->sta = NULL;
1461                                 rsta->sta_id = -1;
1462                                 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1463                                         rsta->start_tx_aggr[cnt] = false;
1464                                 if (common->num_stations > 0)
1465                                         common->num_stations--;
1466                                 break;
1467                         }
1468                 }
1469                 if (sta_idx >= common->max_stations)
1470                         rsi_dbg(ERR_ZONE, "%s: No station found\n", __func__);
1471         }
1472
1473         if ((vif->type == NL80211_IFTYPE_STATION) ||
1474             (vif->type == NL80211_IFTYPE_P2P_CLIENT)) {
1475                 /* Resetting all the fields to default values */
1476                 memcpy((u8 *)bss->bssid, (u8 *)sta->addr, ETH_ALEN);
1477                 bss->qos = sta->wme;
1478                 common->bitrate_mask[NL80211_BAND_2GHZ] = 0;
1479                 common->bitrate_mask[NL80211_BAND_5GHZ] = 0;
1480                 common->vif_info[0].is_ht = false;
1481                 common->vif_info[0].sgi = false;
1482                 common->vif_info[0].seq_start = 0;
1483                 common->secinfo.ptk_cipher = 0;
1484                 common->secinfo.gtk_cipher = 0;
1485                 if (!common->iface_down)
1486                         rsi_send_rx_filter_frame(common, 0);
1487         }
1488         mutex_unlock(&common->mutex);
1489
1490         return 0;
1491 }
1492
1493 /**
1494  * rsi_mac80211_set_antenna() - This function is used to configure
1495  *                              tx and rx antennas.
1496  * @hw: Pointer to the ieee80211_hw structure.
1497  * @tx_ant: Bitmap for tx antenna
1498  * @rx_ant: Bitmap for rx antenna
1499  *
1500  * Return: 0 on success, Negative error code on failure.
1501  */
1502 static int rsi_mac80211_set_antenna(struct ieee80211_hw *hw,
1503                                     u32 tx_ant, u32 rx_ant)
1504 {
1505         struct rsi_hw *adapter = hw->priv;
1506         struct rsi_common *common = adapter->priv;
1507         u8 antenna = 0;
1508
1509         if (tx_ant > 1 || rx_ant > 1) {
1510                 rsi_dbg(ERR_ZONE,
1511                         "Invalid antenna selection (tx: %d, rx:%d)\n",
1512                         tx_ant, rx_ant);
1513                 rsi_dbg(ERR_ZONE,
1514                         "Use 0 for int_ant, 1 for ext_ant\n");
1515                 return -EINVAL;
1516         }
1517
1518         rsi_dbg(INFO_ZONE, "%s: Antenna map Tx %x Rx %d\n",
1519                         __func__, tx_ant, rx_ant);
1520
1521         mutex_lock(&common->mutex);
1522
1523         antenna = tx_ant ? ANTENNA_SEL_UFL : ANTENNA_SEL_INT;
1524         if (common->ant_in_use != antenna)
1525                 if (rsi_set_antenna(common, antenna))
1526                         goto fail_set_antenna;
1527
1528         rsi_dbg(INFO_ZONE, "(%s) Antenna path configured successfully\n",
1529                 tx_ant ? "UFL" : "INT");
1530
1531         common->ant_in_use = antenna;
1532
1533         mutex_unlock(&common->mutex);
1534
1535         return 0;
1536
1537 fail_set_antenna:
1538         rsi_dbg(ERR_ZONE, "%s: Failed.\n", __func__);
1539         mutex_unlock(&common->mutex);
1540         return -EINVAL;
1541 }
1542
1543 /**
1544  * rsi_mac80211_get_antenna() - This function is used to configure
1545  *                              tx and rx antennas.
1546  *
1547  * @hw: Pointer to the ieee80211_hw structure.
1548  * @tx_ant: Bitmap for tx antenna
1549  * @rx_ant: Bitmap for rx antenna
1550  *
1551  * Return: 0 on success, negative error codes on failure.
1552  */
1553 static int rsi_mac80211_get_antenna(struct ieee80211_hw *hw,
1554                                     u32 *tx_ant, u32 *rx_ant)
1555 {
1556         struct rsi_hw *adapter = hw->priv;
1557         struct rsi_common *common = adapter->priv;
1558
1559         mutex_lock(&common->mutex);
1560
1561         *tx_ant = (common->ant_in_use == ANTENNA_SEL_UFL) ? 1 : 0;
1562         *rx_ant = 0;
1563
1564         mutex_unlock(&common->mutex);
1565
1566         return 0;
1567 }
1568
1569 static int rsi_map_region_code(enum nl80211_dfs_regions region_code)
1570 {
1571         switch (region_code) {
1572         case NL80211_DFS_FCC:
1573                 return RSI_REGION_FCC;
1574         case NL80211_DFS_ETSI:
1575                 return RSI_REGION_ETSI;
1576         case NL80211_DFS_JP:
1577                 return RSI_REGION_TELEC;
1578         case NL80211_DFS_UNSET:
1579                 return RSI_REGION_WORLD;
1580         }
1581         return RSI_REGION_WORLD;
1582 }
1583
1584 static void rsi_reg_notify(struct wiphy *wiphy,
1585                            struct regulatory_request *request)
1586 {
1587         struct ieee80211_supported_band *sband;
1588         struct ieee80211_channel *ch;
1589         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
1590         struct rsi_hw * adapter = hw->priv;
1591         struct rsi_common *common = adapter->priv;
1592         int i;
1593
1594         mutex_lock(&common->mutex);
1595
1596         rsi_dbg(INFO_ZONE, "country = %s dfs_region = %d\n",
1597                 request->alpha2, request->dfs_region);
1598
1599         if (common->num_supp_bands > 1) {
1600                 sband = wiphy->bands[NL80211_BAND_5GHZ];
1601
1602                 for (i = 0; i < sband->n_channels; i++) {
1603                         ch = &sband->channels[i];
1604                         if (ch->flags & IEEE80211_CHAN_DISABLED)
1605                                 continue;
1606
1607                         if (ch->flags & IEEE80211_CHAN_RADAR)
1608                                 ch->flags |= IEEE80211_CHAN_NO_IR;
1609                 }
1610         }
1611         adapter->dfs_region = rsi_map_region_code(request->dfs_region);
1612         rsi_dbg(INFO_ZONE, "RSI region code = %d\n", adapter->dfs_region);
1613
1614         adapter->country[0] = request->alpha2[0];
1615         adapter->country[1] = request->alpha2[1];
1616
1617         mutex_unlock(&common->mutex);
1618 }
1619
1620 static void rsi_mac80211_rfkill_poll(struct ieee80211_hw *hw)
1621 {
1622         struct rsi_hw *adapter = hw->priv;
1623         struct rsi_common *common = adapter->priv;
1624
1625         mutex_lock(&common->mutex);
1626         if (common->fsm_state != FSM_MAC_INIT_DONE)
1627                 wiphy_rfkill_set_hw_state(hw->wiphy, true);
1628         else
1629                 wiphy_rfkill_set_hw_state(hw->wiphy, false);
1630         mutex_unlock(&common->mutex);
1631 }
1632
1633 static void rsi_resume_conn_channel(struct rsi_common *common)
1634 {
1635         struct rsi_hw *adapter = common->priv;
1636         struct ieee80211_vif *vif;
1637         int cnt;
1638
1639         for (cnt = 0; cnt < RSI_MAX_VIFS; cnt++) {
1640                 vif = adapter->vifs[cnt];
1641                 if (!vif)
1642                         continue;
1643
1644                 if ((vif->type == NL80211_IFTYPE_AP) ||
1645                     (vif->type == NL80211_IFTYPE_P2P_GO)) {
1646                         rsi_switch_channel(adapter, vif);
1647                         break;
1648                 }
1649                 if (((vif->type == NL80211_IFTYPE_STATION) ||
1650                      (vif->type == NL80211_IFTYPE_P2P_CLIENT)) &&
1651                     vif->bss_conf.assoc) {
1652                         rsi_switch_channel(adapter, vif);
1653                         break;
1654                 }
1655         }
1656 }
1657
1658 void rsi_roc_timeout(struct timer_list *t)
1659 {
1660         struct rsi_common *common = from_timer(common, t, roc_timer);
1661
1662         rsi_dbg(INFO_ZONE, "Remain on channel expired\n");
1663
1664         mutex_lock(&common->mutex);
1665         ieee80211_remain_on_channel_expired(common->priv->hw);
1666
1667         if (timer_pending(&common->roc_timer))
1668                 del_timer(&common->roc_timer);
1669
1670         rsi_resume_conn_channel(common);
1671         mutex_unlock(&common->mutex);
1672 }
1673
1674 static int rsi_mac80211_roc(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1675                             struct ieee80211_channel *chan, int duration,
1676                             enum ieee80211_roc_type type)
1677 {
1678         struct rsi_hw *adapter = (struct rsi_hw *)hw->priv;
1679         struct rsi_common *common = (struct rsi_common *)adapter->priv;
1680         int status = 0;
1681
1682         rsi_dbg(INFO_ZONE, "***** Remain on channel *****\n");
1683
1684         mutex_lock(&common->mutex);
1685         rsi_dbg(INFO_ZONE, "%s: channel: %d duration: %dms\n",
1686                 __func__, chan->hw_value, duration);
1687
1688         if (timer_pending(&common->roc_timer)) {
1689                 rsi_dbg(INFO_ZONE, "Stop on-going ROC\n");
1690                 del_timer(&common->roc_timer);
1691         }
1692         common->roc_timer.expires = msecs_to_jiffies(duration) + jiffies;
1693         add_timer(&common->roc_timer);
1694
1695         /* Configure band */
1696         if (rsi_band_check(common, chan)) {
1697                 rsi_dbg(ERR_ZONE, "Failed to set band\n");
1698                 status = -EINVAL;
1699                 goto out;
1700         }
1701
1702         /* Configure channel */
1703         if (rsi_set_channel(common, chan)) {
1704                 rsi_dbg(ERR_ZONE, "Failed to set the channel\n");
1705                 status = -EINVAL;
1706                 goto out;
1707         }
1708
1709         common->roc_vif = vif;
1710         ieee80211_ready_on_channel(hw);
1711         rsi_dbg(INFO_ZONE, "%s: Ready on channel :%d\n",
1712                 __func__, chan->hw_value);
1713
1714 out:
1715         mutex_unlock(&common->mutex);
1716
1717         return status;
1718 }
1719
1720 static int rsi_mac80211_cancel_roc(struct ieee80211_hw *hw)
1721 {
1722         struct rsi_hw *adapter = hw->priv;
1723         struct rsi_common *common = adapter->priv;
1724
1725         rsi_dbg(INFO_ZONE, "Cancel remain on channel\n");
1726
1727         mutex_lock(&common->mutex);
1728         if (!timer_pending(&common->roc_timer)) {
1729                 mutex_unlock(&common->mutex);
1730                 return 0;
1731         }
1732
1733         del_timer(&common->roc_timer);
1734
1735         rsi_resume_conn_channel(common);
1736         mutex_unlock(&common->mutex);
1737
1738         return 0;
1739 }
1740
1741 #ifdef CONFIG_PM
1742 static const struct wiphy_wowlan_support rsi_wowlan_support = {
1743         .flags = WIPHY_WOWLAN_ANY |
1744                  WIPHY_WOWLAN_MAGIC_PKT |
1745                  WIPHY_WOWLAN_DISCONNECT |
1746                  WIPHY_WOWLAN_GTK_REKEY_FAILURE  |
1747                  WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
1748                  WIPHY_WOWLAN_EAP_IDENTITY_REQ   |
1749                  WIPHY_WOWLAN_4WAY_HANDSHAKE,
1750 };
1751
1752 static u16 rsi_wow_map_triggers(struct rsi_common *common,
1753                                 struct cfg80211_wowlan *wowlan)
1754 {
1755         u16 wow_triggers = 0;
1756
1757         rsi_dbg(INFO_ZONE, "Mapping wowlan triggers\n");
1758
1759         if (wowlan->any)
1760                 wow_triggers |= RSI_WOW_ANY;
1761         if (wowlan->magic_pkt)
1762                 wow_triggers |= RSI_WOW_MAGIC_PKT;
1763         if (wowlan->disconnect)
1764                 wow_triggers |= RSI_WOW_DISCONNECT;
1765         if (wowlan->gtk_rekey_failure || wowlan->eap_identity_req ||
1766             wowlan->four_way_handshake)
1767                 wow_triggers |= RSI_WOW_GTK_REKEY;
1768
1769         return wow_triggers;
1770 }
1771
1772 int rsi_config_wowlan(struct rsi_hw *adapter, struct cfg80211_wowlan *wowlan)
1773 {
1774         struct rsi_common *common = adapter->priv;
1775         u16 triggers = 0;
1776         u16 rx_filter_word = 0;
1777         struct ieee80211_bss_conf *bss = NULL;
1778
1779         rsi_dbg(INFO_ZONE, "Config WoWLAN to device\n");
1780
1781         if (!adapter->vifs[0])
1782                 return -EINVAL;
1783
1784         bss = &adapter->vifs[0]->bss_conf;
1785
1786         if (WARN_ON(!wowlan)) {
1787                 rsi_dbg(ERR_ZONE, "WoW triggers not enabled\n");
1788                 return -EINVAL;
1789         }
1790
1791         common->wow_flags |= RSI_WOW_ENABLED;
1792         triggers = rsi_wow_map_triggers(common, wowlan);
1793         if (!triggers) {
1794                 rsi_dbg(ERR_ZONE, "%s:No valid WoW triggers\n", __func__);
1795                 return -EINVAL;
1796         }
1797         if (!bss->assoc) {
1798                 rsi_dbg(ERR_ZONE,
1799                         "Cannot configure WoWLAN (Station not connected)\n");
1800                 common->wow_flags |= RSI_WOW_NO_CONNECTION;
1801                 return 0;
1802         }
1803         rsi_dbg(INFO_ZONE, "TRIGGERS %x\n", triggers);
1804         rsi_send_wowlan_request(common, triggers, 1);
1805
1806         /**
1807          * Increase the beacon_miss threshold & keep-alive timers in
1808          * vap_update frame
1809          */
1810         rsi_send_vap_dynamic_update(common);
1811
1812         rx_filter_word = (ALLOW_DATA_ASSOC_PEER | DISALLOW_BEACONS);
1813         rsi_send_rx_filter_frame(common, rx_filter_word);
1814
1815         return 0;
1816 }
1817 EXPORT_SYMBOL(rsi_config_wowlan);
1818
1819 static int rsi_mac80211_suspend(struct ieee80211_hw *hw,
1820                                 struct cfg80211_wowlan *wowlan)
1821 {
1822         struct rsi_hw *adapter = hw->priv;
1823         struct rsi_common *common = adapter->priv;
1824
1825         rsi_dbg(INFO_ZONE, "%s: mac80211 suspend\n", __func__);
1826         mutex_lock(&common->mutex);
1827         if (rsi_config_wowlan(adapter, wowlan)) {
1828                 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n");
1829                 mutex_unlock(&common->mutex);
1830                 return 1;
1831         }
1832         mutex_unlock(&common->mutex);
1833
1834         return 0;
1835 }
1836
1837 static int rsi_mac80211_resume(struct ieee80211_hw *hw)
1838 {
1839         u16 rx_filter_word = 0;
1840         struct rsi_hw *adapter = hw->priv;
1841         struct rsi_common *common = adapter->priv;
1842
1843         common->wow_flags = 0;
1844
1845         rsi_dbg(INFO_ZONE, "%s: mac80211 resume\n", __func__);
1846
1847         if (common->hibernate_resume)
1848                 return 0;
1849
1850         mutex_lock(&common->mutex);
1851         rsi_send_wowlan_request(common, 0, 0);
1852
1853         rx_filter_word = (ALLOW_DATA_ASSOC_PEER | ALLOW_CTRL_ASSOC_PEER |
1854                           ALLOW_MGMT_ASSOC_PEER);
1855         rsi_send_rx_filter_frame(common, rx_filter_word);
1856         mutex_unlock(&common->mutex);
1857
1858         return 0;
1859 }
1860
1861 #endif
1862
1863 static const struct ieee80211_ops mac80211_ops = {
1864         .tx = rsi_mac80211_tx,
1865         .start = rsi_mac80211_start,
1866         .stop = rsi_mac80211_stop,
1867         .add_interface = rsi_mac80211_add_interface,
1868         .remove_interface = rsi_mac80211_remove_interface,
1869         .config = rsi_mac80211_config,
1870         .bss_info_changed = rsi_mac80211_bss_info_changed,
1871         .conf_tx = rsi_mac80211_conf_tx,
1872         .configure_filter = rsi_mac80211_conf_filter,
1873         .set_key = rsi_mac80211_set_key,
1874         .set_rts_threshold = rsi_mac80211_set_rts_threshold,
1875         .set_bitrate_mask = rsi_mac80211_set_rate_mask,
1876         .ampdu_action = rsi_mac80211_ampdu_action,
1877         .sta_add = rsi_mac80211_sta_add,
1878         .sta_remove = rsi_mac80211_sta_remove,
1879         .set_antenna = rsi_mac80211_set_antenna,
1880         .get_antenna = rsi_mac80211_get_antenna,
1881         .rfkill_poll = rsi_mac80211_rfkill_poll,
1882         .remain_on_channel = rsi_mac80211_roc,
1883         .cancel_remain_on_channel = rsi_mac80211_cancel_roc,
1884 #ifdef CONFIG_PM
1885         .suspend = rsi_mac80211_suspend,
1886         .resume  = rsi_mac80211_resume,
1887 #endif
1888 };
1889
1890 /**
1891  * rsi_mac80211_attach() - This function is used to initialize Mac80211 stack.
1892  * @common: Pointer to the driver private structure.
1893  *
1894  * Return: 0 on success, negative error codes on failure.
1895  */
1896 int rsi_mac80211_attach(struct rsi_common *common)
1897 {
1898         int status = 0;
1899         struct ieee80211_hw *hw = NULL;
1900         struct wiphy *wiphy = NULL;
1901         struct rsi_hw *adapter = common->priv;
1902         u8 addr_mask[ETH_ALEN] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x3};
1903
1904         rsi_dbg(INIT_ZONE, "%s: Performing mac80211 attach\n", __func__);
1905
1906         hw = ieee80211_alloc_hw(sizeof(struct rsi_hw), &mac80211_ops);
1907         if (!hw) {
1908                 rsi_dbg(ERR_ZONE, "%s: ieee80211 hw alloc failed\n", __func__);
1909                 return -ENOMEM;
1910         }
1911
1912         wiphy = hw->wiphy;
1913
1914         SET_IEEE80211_DEV(hw, adapter->device);
1915
1916         hw->priv = adapter;
1917         adapter->hw = hw;
1918
1919         ieee80211_hw_set(hw, SIGNAL_DBM);
1920         ieee80211_hw_set(hw, HAS_RATE_CONTROL);
1921         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
1922         ieee80211_hw_set(hw, SUPPORTS_PS);
1923         ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
1924
1925         hw->queues = MAX_HW_QUEUES;
1926         hw->extra_tx_headroom = RSI_NEEDED_HEADROOM;
1927
1928         hw->max_rates = 1;
1929         hw->max_rate_tries = MAX_RETRIES;
1930         hw->uapsd_queues = RSI_IEEE80211_UAPSD_QUEUES;
1931         hw->uapsd_max_sp_len = IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL;
1932
1933         hw->max_tx_aggregation_subframes = RSI_MAX_TX_AGGR_FRMS;
1934         hw->max_rx_aggregation_subframes = RSI_MAX_RX_AGGR_FRMS;
1935         hw->rate_control_algorithm = "AARF";
1936
1937         SET_IEEE80211_PERM_ADDR(hw, common->mac_addr);
1938         ether_addr_copy(hw->wiphy->addr_mask, addr_mask);
1939
1940         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1941                                  BIT(NL80211_IFTYPE_AP) |
1942                                  BIT(NL80211_IFTYPE_P2P_DEVICE) |
1943                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
1944                                  BIT(NL80211_IFTYPE_P2P_GO);
1945
1946         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1947         wiphy->retry_short = RETRY_SHORT;
1948         wiphy->retry_long  = RETRY_LONG;
1949         wiphy->frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
1950         wiphy->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
1951         wiphy->flags = 0;
1952
1953         wiphy->available_antennas_rx = 1;
1954         wiphy->available_antennas_tx = 1;
1955
1956         status = rsi_register_rates_channels(adapter, NL80211_BAND_2GHZ);
1957         if (status)
1958                 return status;
1959         wiphy->bands[NL80211_BAND_2GHZ] =
1960                 &adapter->sbands[NL80211_BAND_2GHZ];
1961         if (common->num_supp_bands > 1) {
1962                 status = rsi_register_rates_channels(adapter,
1963                                                      NL80211_BAND_5GHZ);
1964                 if (status)
1965                         return status;
1966                 wiphy->bands[NL80211_BAND_5GHZ] =
1967                         &adapter->sbands[NL80211_BAND_5GHZ];
1968         }
1969
1970         /* AP Parameters */
1971         wiphy->max_ap_assoc_sta = rsi_max_ap_stas[common->oper_mode - 1];
1972         common->max_stations = wiphy->max_ap_assoc_sta;
1973         rsi_dbg(ERR_ZONE, "Max Stations Allowed = %d\n", common->max_stations);
1974         hw->sta_data_size = sizeof(struct rsi_sta);
1975         wiphy->flags = WIPHY_FLAG_REPORTS_OBSS;
1976         wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
1977         wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER;
1978         wiphy->reg_notifier = rsi_reg_notify;
1979
1980 #ifdef CONFIG_PM
1981         wiphy->wowlan = &rsi_wowlan_support;
1982 #endif
1983
1984         wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1985
1986         /* Wi-Fi direct parameters */
1987         wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
1988         wiphy->flags |= WIPHY_FLAG_OFFCHAN_TX;
1989         wiphy->max_remain_on_channel_duration = 10000;
1990         hw->max_listen_interval = 10;
1991         wiphy->iface_combinations = rsi_iface_combinations;
1992         wiphy->n_iface_combinations = ARRAY_SIZE(rsi_iface_combinations);
1993
1994         if (common->coex_mode > 1)
1995                 wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
1996
1997         status = ieee80211_register_hw(hw);
1998         if (status)
1999                 return status;
2000
2001         return rsi_init_dbgfs(adapter);
2002 }