drivers/net/wireless/ath/wcn36xx/main.c

   1 /*
   2  * Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com>
   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 ANY
  11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  18
  19 #include <linux/module.h>
  20 #include <linux/firmware.h>
  21 #include <linux/platform_device.h>
  22 #include "wcn36xx.h"
  23
  24 unsigned int wcn36xx_dbg_mask;
  25 module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644);
  26 MODULE_PARM_DESC(debug_mask, "Debugging mask");
  27
  28 #define CHAN2G(_freq, _idx) { \
  29         .band = IEEE80211_BAND_2GHZ, \
  30         .center_freq = (_freq), \
  31         .hw_value = (_idx), \
  32         .max_power = 25, \
  33 }
  34
  35 #define CHAN5G(_freq, _idx) { \
  36         .band = IEEE80211_BAND_5GHZ, \
  37         .center_freq = (_freq), \
  38         .hw_value = (_idx), \
  39         .max_power = 25, \
  40 }
  41
  42 /* The wcn firmware expects channel values to matching
  43  * their mnemonic values. So use these for .hw_value. */
  44 static struct ieee80211_channel wcn_2ghz_channels[] = {
  45         CHAN2G(2412, 1), /* Channel 1 */
  46         CHAN2G(2417, 2), /* Channel 2 */
  47         CHAN2G(2422, 3), /* Channel 3 */
  48         CHAN2G(2427, 4), /* Channel 4 */
  49         CHAN2G(2432, 5), /* Channel 5 */
  50         CHAN2G(2437, 6), /* Channel 6 */
  51         CHAN2G(2442, 7), /* Channel 7 */
  52         CHAN2G(2447, 8), /* Channel 8 */
  53         CHAN2G(2452, 9), /* Channel 9 */
  54         CHAN2G(2457, 10), /* Channel 10 */
  55         CHAN2G(2462, 11), /* Channel 11 */
  56         CHAN2G(2467, 12), /* Channel 12 */
  57         CHAN2G(2472, 13), /* Channel 13 */
  58         CHAN2G(2484, 14)  /* Channel 14 */
  59
  60 };
  61
  62 static struct ieee80211_channel wcn_5ghz_channels[] = {
  63         CHAN5G(5180, 36),
  64         CHAN5G(5200, 40),
  65         CHAN5G(5220, 44),
  66         CHAN5G(5240, 48),
  67         CHAN5G(5260, 52),
  68         CHAN5G(5280, 56),
  69         CHAN5G(5300, 60),
  70         CHAN5G(5320, 64),
  71         CHAN5G(5500, 100),
  72         CHAN5G(5520, 104),
  73         CHAN5G(5540, 108),
  74         CHAN5G(5560, 112),
  75         CHAN5G(5580, 116),
  76         CHAN5G(5600, 120),
  77         CHAN5G(5620, 124),
  78         CHAN5G(5640, 128),
  79         CHAN5G(5660, 132),
  80         CHAN5G(5700, 140),
  81         CHAN5G(5745, 149),
  82         CHAN5G(5765, 153),
  83         CHAN5G(5785, 157),
  84         CHAN5G(5805, 161),
  85         CHAN5G(5825, 165)
  86 };
  87
  88 #define RATE(_bitrate, _hw_rate, _flags) { \
  89         .bitrate        = (_bitrate),                   \
  90         .flags          = (_flags),                     \
  91         .hw_value       = (_hw_rate),                   \
  92         .hw_value_short = (_hw_rate)  \
  93 }
  94
  95 static struct ieee80211_rate wcn_2ghz_rates[] = {
  96         RATE(10, HW_RATE_INDEX_1MBPS, 0),
  97         RATE(20, HW_RATE_INDEX_2MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
  98         RATE(55, HW_RATE_INDEX_5_5MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
  99         RATE(110, HW_RATE_INDEX_11MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
 100         RATE(60, HW_RATE_INDEX_6MBPS, 0),
 101         RATE(90, HW_RATE_INDEX_9MBPS, 0),
 102         RATE(120, HW_RATE_INDEX_12MBPS, 0),
 103         RATE(180, HW_RATE_INDEX_18MBPS, 0),
 104         RATE(240, HW_RATE_INDEX_24MBPS, 0),
 105         RATE(360, HW_RATE_INDEX_36MBPS, 0),
 106         RATE(480, HW_RATE_INDEX_48MBPS, 0),
 107         RATE(540, HW_RATE_INDEX_54MBPS, 0)
 108 };
 109
 110 static struct ieee80211_rate wcn_5ghz_rates[] = {
 111         RATE(60, HW_RATE_INDEX_6MBPS, 0),
 112         RATE(90, HW_RATE_INDEX_9MBPS, 0),
 113         RATE(120, HW_RATE_INDEX_12MBPS, 0),
 114         RATE(180, HW_RATE_INDEX_18MBPS, 0),
 115         RATE(240, HW_RATE_INDEX_24MBPS, 0),
 116         RATE(360, HW_RATE_INDEX_36MBPS, 0),
 117         RATE(480, HW_RATE_INDEX_48MBPS, 0),
 118         RATE(540, HW_RATE_INDEX_54MBPS, 0)
 119 };
 120
 121 static struct ieee80211_supported_band wcn_band_2ghz = {
 122         .channels       = wcn_2ghz_channels,
 123         .n_channels     = ARRAY_SIZE(wcn_2ghz_channels),
 124         .bitrates       = wcn_2ghz_rates,
 125         .n_bitrates     = ARRAY_SIZE(wcn_2ghz_rates),
 126         .ht_cap         = {
 127                 .cap =  IEEE80211_HT_CAP_GRN_FLD |
 128                         IEEE80211_HT_CAP_SGI_20 |
 129                         IEEE80211_HT_CAP_DSSSCCK40 |
 130                         IEEE80211_HT_CAP_LSIG_TXOP_PROT,
 131                 .ht_supported = true,
 132                 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 133                 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
 134                 .mcs = {
 135                         .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
 136                         .rx_highest = cpu_to_le16(72),
 137                         .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
 138                 }
 139         }
 140 };
 141
 142 static struct ieee80211_supported_band wcn_band_5ghz = {
 143         .channels       = wcn_5ghz_channels,
 144         .n_channels     = ARRAY_SIZE(wcn_5ghz_channels),
 145         .bitrates       = wcn_5ghz_rates,
 146         .n_bitrates     = ARRAY_SIZE(wcn_5ghz_rates),
 147         .ht_cap         = {
 148                 .cap =  IEEE80211_HT_CAP_GRN_FLD |
 149                         IEEE80211_HT_CAP_SGI_20 |
 150                         IEEE80211_HT_CAP_DSSSCCK40 |
 151                         IEEE80211_HT_CAP_LSIG_TXOP_PROT |
 152                         IEEE80211_HT_CAP_SGI_40 |
 153                         IEEE80211_HT_CAP_SUP_WIDTH_20_40,
 154                 .ht_supported = true,
 155                 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 156                 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
 157                 .mcs = {
 158                         .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
 159                         .rx_highest = cpu_to_le16(72),
 160                         .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
 161                 }
 162         }
 163 };
 164
 165 #ifdef CONFIG_PM
 166
 167 static const struct wiphy_wowlan_support wowlan_support = {
 168         .flags = WIPHY_WOWLAN_ANY
 169 };
 170
 171 #endif
 172
 173 static inline u8 get_sta_index(struct ieee80211_vif *vif,
 174                                struct wcn36xx_sta *sta_priv)
 175 {
 176         return NL80211_IFTYPE_STATION == vif->type ?
 177                sta_priv->bss_sta_index :
 178                sta_priv->sta_index;
 179 }
 180
 181 static const char * const wcn36xx_caps_names[] = {
 182         "MCC",                          /* 0 */
 183         "P2P",                          /* 1 */
 184         "DOT11AC",                      /* 2 */
 185         "SLM_SESSIONIZATION",           /* 3 */
 186         "DOT11AC_OPMODE",               /* 4 */
 187         "SAP32STA",                     /* 5 */
 188         "TDLS",                         /* 6 */
 189         "P2P_GO_NOA_DECOUPLE_INIT_SCAN",/* 7 */
 190         "WLANACTIVE_OFFLOAD",           /* 8 */
 191         "BEACON_OFFLOAD",               /* 9 */
 192         "SCAN_OFFLOAD",                 /* 10 */
 193         "ROAM_OFFLOAD",                 /* 11 */
 194         "BCN_MISS_OFFLOAD",             /* 12 */
 195         "STA_POWERSAVE",                /* 13 */
 196         "STA_ADVANCED_PWRSAVE",         /* 14 */
 197         "AP_UAPSD",                     /* 15 */
 198         "AP_DFS",                       /* 16 */
 199         "BLOCKACK",                     /* 17 */
 200         "PHY_ERR",                      /* 18 */
 201         "BCN_FILTER",                   /* 19 */
 202         "RTT",                          /* 20 */
 203         "RATECTRL",                     /* 21 */
 204         "WOW"                           /* 22 */
 205 };
 206
 207 static const char *wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x)
 208 {
 209         if (x >= ARRAY_SIZE(wcn36xx_caps_names))
 210                 return "UNKNOWN";
 211         return wcn36xx_caps_names[x];
 212 }
 213
 214 static void wcn36xx_feat_caps_info(struct wcn36xx *wcn)
 215 {
 216         int i;
 217
 218         for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
 219                 if (get_feat_caps(wcn->fw_feat_caps, i))
 220                         wcn36xx_info("FW Cap %s\n", wcn36xx_get_cap_name(i));
 221         }
 222 }
 223
 224 static int wcn36xx_start(struct ieee80211_hw *hw)
 225 {
 226         struct wcn36xx *wcn = hw->priv;
 227         int ret;
 228
 229         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
 230
 231         /* SMD initialization */
 232         ret = wcn36xx_smd_open(wcn);
 233         if (ret) {
 234                 wcn36xx_err("Failed to open smd channel: %d\n", ret);
 235                 goto out_err;
 236         }
 237
 238         /* Allocate memory pools for Mgmt BD headers and Data BD headers */
 239         ret = wcn36xx_dxe_allocate_mem_pools(wcn);
 240         if (ret) {
 241                 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret);
 242                 goto out_smd_close;
 243         }
 244
 245         ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
 246         if (ret) {
 247                 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
 248                 goto out_free_dxe_pool;
 249         }
 250
 251         wcn->hal_buf = kmalloc(WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
 252         if (!wcn->hal_buf) {
 253                 wcn36xx_err("Failed to allocate smd buf\n");
 254                 ret = -ENOMEM;
 255                 goto out_free_dxe_ctl;
 256         }
 257
 258         ret = wcn36xx_smd_load_nv(wcn);
 259         if (ret) {
 260                 wcn36xx_err("Failed to push NV to chip\n");
 261                 goto out_free_smd_buf;
 262         }
 263
 264         ret = wcn36xx_smd_start(wcn);
 265         if (ret) {
 266                 wcn36xx_err("Failed to start chip\n");
 267                 goto out_free_smd_buf;
 268         }
 269
 270         if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
 271                 ret = wcn36xx_smd_feature_caps_exchange(wcn);
 272                 if (ret)
 273                         wcn36xx_warn("Exchange feature caps failed\n");
 274                 else
 275                         wcn36xx_feat_caps_info(wcn);
 276         }
 277
 278         /* DMA channel initialization */
 279         ret = wcn36xx_dxe_init(wcn);
 280         if (ret) {
 281                 wcn36xx_err("DXE init failed\n");
 282                 goto out_smd_stop;
 283         }
 284
 285         wcn36xx_debugfs_init(wcn);
 286
 287         INIT_LIST_HEAD(&wcn->vif_list);
 288         spin_lock_init(&wcn->dxe_lock);
 289
 290         return 0;
 291
 292 out_smd_stop:
 293         wcn36xx_smd_stop(wcn);
 294 out_free_smd_buf:
 295         kfree(wcn->hal_buf);
 296 out_free_dxe_pool:
 297         wcn36xx_dxe_free_mem_pools(wcn);
 298 out_free_dxe_ctl:
 299         wcn36xx_dxe_free_ctl_blks(wcn);
 300 out_smd_close:
 301         wcn36xx_smd_close(wcn);
 302 out_err:
 303         return ret;
 304 }
 305
 306 static void wcn36xx_stop(struct ieee80211_hw *hw)
 307 {
 308         struct wcn36xx *wcn = hw->priv;
 309
 310         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
 311
 312         wcn36xx_debugfs_exit(wcn);
 313         wcn36xx_smd_stop(wcn);
 314         wcn36xx_dxe_deinit(wcn);
 315         wcn36xx_smd_close(wcn);
 316
 317         wcn36xx_dxe_free_mem_pools(wcn);
 318         wcn36xx_dxe_free_ctl_blks(wcn);
 319
 320         kfree(wcn->hal_buf);
 321 }
 322
 323 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
 324 {
 325         struct wcn36xx *wcn = hw->priv;
 326         struct ieee80211_vif *vif = NULL;
 327         struct wcn36xx_vif *tmp;
 328
 329         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
 330
 331         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 332                 int ch = WCN36XX_HW_CHANNEL(wcn);
 333                 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
 334                             ch);
 335                 list_for_each_entry(tmp, &wcn->vif_list, list) {
 336                         vif = container_of((void *)tmp,
 337                                            struct ieee80211_vif,
 338                                            drv_priv);
 339                         wcn36xx_smd_switch_channel(wcn, vif, ch);
 340                 }
 341         }
 342
 343         return 0;
 344 }
 345
 346 #define WCN36XX_SUPPORTED_FILTERS (0)
 347
 348 static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
 349                                      unsigned int changed,
 350                                      unsigned int *total, u64 multicast)
 351 {
 352         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
 353
 354         *total &= WCN36XX_SUPPORTED_FILTERS;
 355 }
 356
 357 static void wcn36xx_tx(struct ieee80211_hw *hw,
 358                        struct ieee80211_tx_control *control,
 359                        struct sk_buff *skb)
 360 {
 361         struct wcn36xx *wcn = hw->priv;
 362         struct wcn36xx_sta *sta_priv = NULL;
 363
 364         if (control->sta)
 365                 sta_priv = (struct wcn36xx_sta *)control->sta->drv_priv;
 366
 367         if (wcn36xx_start_tx(wcn, sta_priv, skb))
 368                 ieee80211_free_txskb(wcn->hw, skb);
 369 }
 370
 371 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 372                            struct ieee80211_vif *vif,
 373                            struct ieee80211_sta *sta,
 374                            struct ieee80211_key_conf *key_conf)
 375 {
 376         struct wcn36xx *wcn = hw->priv;
 377         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
 378         struct wcn36xx_sta *sta_priv = vif_priv->sta;
 379         int ret = 0;
 380         u8 key[WLAN_MAX_KEY_LEN];
 381
 382         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
 383         wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
 384                     cmd, key_conf->cipher, key_conf->keyidx,
 385                     key_conf->keylen, key_conf->flags);
 386         wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
 387                          key_conf->key,
 388                          key_conf->keylen);
 389
 390         switch (key_conf->cipher) {
 391         case WLAN_CIPHER_SUITE_WEP40:
 392                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 393                 break;
 394         case WLAN_CIPHER_SUITE_WEP104:
 395                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 396                 break;
 397         case WLAN_CIPHER_SUITE_CCMP:
 398                 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
 399                 break;
 400         case WLAN_CIPHER_SUITE_TKIP:
 401                 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
 402                 break;
 403         default:
 404                 wcn36xx_err("Unsupported key type 0x%x\n",
 405                               key_conf->cipher);
 406                 ret = -EOPNOTSUPP;
 407                 goto out;
 408         }
 409
 410         switch (cmd) {
 411         case SET_KEY:
 412                 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
 413                         /*
 414                          * Supplicant is sending key in the wrong order:
 415                          * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
 416                          * but HW expects it to be in the order as described in
 417                          * IEEE 802.11 spec (see chapter 11.7) like this:
 418                          * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
 419                          */
 420                         memcpy(key, key_conf->key, 16);
 421                         memcpy(key + 16, key_conf->key + 24, 8);
 422                         memcpy(key + 24, key_conf->key + 16, 8);
 423                 } else {
 424                         memcpy(key, key_conf->key, key_conf->keylen);
 425                 }
 426
 427                 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
 428                         sta_priv->is_data_encrypted = true;
 429                         /* Reconfigure bss with encrypt_type */
 430                         if (NL80211_IFTYPE_STATION == vif->type)
 431                                 wcn36xx_smd_config_bss(wcn,
 432                                                        vif,
 433                                                        sta,
 434                                                        sta->addr,
 435                                                        true);
 436
 437                         wcn36xx_smd_set_stakey(wcn,
 438                                 vif_priv->encrypt_type,
 439                                 key_conf->keyidx,
 440                                 key_conf->keylen,
 441                                 key,
 442                                 get_sta_index(vif, sta_priv));
 443                 } else {
 444                         wcn36xx_smd_set_bsskey(wcn,
 445                                 vif_priv->encrypt_type,
 446                                 key_conf->keyidx,
 447                                 key_conf->keylen,
 448                                 key);
 449                         if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
 450                             (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
 451                                 sta_priv->is_data_encrypted = true;
 452                                 wcn36xx_smd_set_stakey(wcn,
 453                                         vif_priv->encrypt_type,
 454                                         key_conf->keyidx,
 455                                         key_conf->keylen,
 456                                         key,
 457                                         get_sta_index(vif, sta_priv));
 458                         }
 459                 }
 460                 break;
 461         case DISABLE_KEY:
 462                 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
 463                         wcn36xx_smd_remove_bsskey(wcn,
 464                                 vif_priv->encrypt_type,
 465                                 key_conf->keyidx);
 466                 } else {
 467                         sta_priv->is_data_encrypted = false;
 468                         /* do not remove key if disassociated */
 469                         if (sta_priv->aid)
 470                                 wcn36xx_smd_remove_stakey(wcn,
 471                                         vif_priv->encrypt_type,
 472                                         key_conf->keyidx,
 473                                         get_sta_index(vif, sta_priv));
 474                 }
 475                 break;
 476         default:
 477                 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
 478                 ret = -EOPNOTSUPP;
 479                 goto out;
 480         }
 481
 482 out:
 483         return ret;
 484 }
 485
 486 static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
 487                                   struct ieee80211_vif *vif,
 488                                   const u8 *mac_addr)
 489 {
 490         struct wcn36xx *wcn = hw->priv;
 491
 492         wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
 493         wcn36xx_smd_start_scan(wcn);
 494 }
 495
 496 static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
 497                                      struct ieee80211_vif *vif)
 498 {
 499         struct wcn36xx *wcn = hw->priv;
 500
 501         wcn36xx_smd_end_scan(wcn);
 502         wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
 503 }
 504
 505 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
 506                                          enum ieee80211_band band)
 507 {
 508         int i, size;
 509         u16 *rates_table;
 510         struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
 511         u32 rates = sta->supp_rates[band];
 512
 513         memset(&sta_priv->supported_rates, 0,
 514                 sizeof(sta_priv->supported_rates));
 515         sta_priv->supported_rates.op_rate_mode = STA_11n;
 516
 517         size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
 518         rates_table = sta_priv->supported_rates.dsss_rates;
 519         if (band == IEEE80211_BAND_2GHZ) {
 520                 for (i = 0; i < size; i++) {
 521                         if (rates & 0x01) {
 522                                 rates_table[i] = wcn_2ghz_rates[i].hw_value;
 523                                 rates = rates >> 1;
 524                         }
 525                 }
 526         }
 527
 528         size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
 529         rates_table = sta_priv->supported_rates.ofdm_rates;
 530         for (i = 0; i < size; i++) {
 531                 if (rates & 0x01) {
 532                         rates_table[i] = wcn_5ghz_rates[i].hw_value;
 533                         rates = rates >> 1;
 534                 }
 535         }
 536
 537         if (sta->ht_cap.ht_supported) {
 538                 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
 539                         sizeof(sta_priv->supported_rates.supported_mcs_set));
 540                 memcpy(sta_priv->supported_rates.supported_mcs_set,
 541                        sta->ht_cap.mcs.rx_mask,
 542                        sizeof(sta->ht_cap.mcs.rx_mask));
 543         }
 544 }
 545 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
 546 {
 547         u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
 548                 HW_RATE_INDEX_6MBPS,
 549                 HW_RATE_INDEX_9MBPS,
 550                 HW_RATE_INDEX_12MBPS,
 551                 HW_RATE_INDEX_18MBPS,
 552                 HW_RATE_INDEX_24MBPS,
 553                 HW_RATE_INDEX_36MBPS,
 554                 HW_RATE_INDEX_48MBPS,
 555                 HW_RATE_INDEX_54MBPS
 556         };
 557         u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
 558                 HW_RATE_INDEX_1MBPS,
 559                 HW_RATE_INDEX_2MBPS,
 560                 HW_RATE_INDEX_5_5MBPS,
 561                 HW_RATE_INDEX_11MBPS
 562         };
 563
 564         rates->op_rate_mode = STA_11n;
 565         memcpy(rates->dsss_rates, dsss_rates,
 566                 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
 567         memcpy(rates->ofdm_rates, ofdm_rates,
 568                 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
 569         rates->supported_mcs_set[0] = 0xFF;
 570 }
 571 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
 572                                      struct ieee80211_vif *vif,
 573                                      struct ieee80211_bss_conf *bss_conf,
 574                                      u32 changed)
 575 {
 576         struct wcn36xx *wcn = hw->priv;
 577         struct sk_buff *skb = NULL;
 578         u16 tim_off, tim_len;
 579         enum wcn36xx_hal_link_state link_state;
 580         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
 581
 582         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
 583                     vif, changed);
 584
 585         if (changed & BSS_CHANGED_BEACON_INFO) {
 586                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 587                             "mac bss changed dtim period %d\n",
 588                             bss_conf->dtim_period);
 589
 590                 vif_priv->dtim_period = bss_conf->dtim_period;
 591         }
 592
 593         if (changed & BSS_CHANGED_PS) {
 594                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 595                             "mac bss PS set %d\n",
 596                             bss_conf->ps);
 597                 if (bss_conf->ps) {
 598                         wcn36xx_pmc_enter_bmps_state(wcn, vif);
 599                 } else {
 600                         wcn36xx_pmc_exit_bmps_state(wcn, vif);
 601                 }
 602         }
 603
 604         if (changed & BSS_CHANGED_BSSID) {
 605                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
 606                             bss_conf->bssid);
 607
 608                 if (!is_zero_ether_addr(bss_conf->bssid)) {
 609                         vif_priv->is_joining = true;
 610                         vif_priv->bss_index = 0xff;
 611                         wcn36xx_smd_join(wcn, bss_conf->bssid,
 612                                          vif->addr, WCN36XX_HW_CHANNEL(wcn));
 613                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 614                                                bss_conf->bssid, false);
 615                 } else {
 616                         vif_priv->is_joining = false;
 617                         wcn36xx_smd_delete_bss(wcn, vif);
 618                 }
 619         }
 620
 621         if (changed & BSS_CHANGED_SSID) {
 622                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 623                             "mac bss changed ssid\n");
 624                 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
 625                                  bss_conf->ssid, bss_conf->ssid_len);
 626
 627                 vif_priv->ssid.length = bss_conf->ssid_len;
 628                 memcpy(&vif_priv->ssid.ssid,
 629                        bss_conf->ssid,
 630                        bss_conf->ssid_len);
 631         }
 632
 633         if (changed & BSS_CHANGED_ASSOC) {
 634                 vif_priv->is_joining = false;
 635                 if (bss_conf->assoc) {
 636                         struct ieee80211_sta *sta;
 637                         struct wcn36xx_sta *sta_priv;
 638
 639                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 640                                     "mac assoc bss %pM vif %pM AID=%d\n",
 641                                      bss_conf->bssid,
 642                                      vif->addr,
 643                                      bss_conf->aid);
 644
 645                         rcu_read_lock();
 646                         sta = ieee80211_find_sta(vif, bss_conf->bssid);
 647                         if (!sta) {
 648                                 wcn36xx_err("sta %pM is not found\n",
 649                                               bss_conf->bssid);
 650                                 rcu_read_unlock();
 651                                 goto out;
 652                         }
 653                         sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
 654
 655                         wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 656
 657                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
 658                                 vif->addr,
 659                                 WCN36XX_HAL_LINK_POSTASSOC_STATE);
 660                         wcn36xx_smd_config_bss(wcn, vif, sta,
 661                                                bss_conf->bssid,
 662                                                true);
 663                         sta_priv->aid = bss_conf->aid;
 664                         /*
 665                          * config_sta must be called from  because this is the
 666                          * place where AID is available.
 667                          */
 668                         wcn36xx_smd_config_sta(wcn, vif, sta);
 669                         rcu_read_unlock();
 670                 } else {
 671                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 672                                     "disassociated bss %pM vif %pM AID=%d\n",
 673                                     bss_conf->bssid,
 674                                     vif->addr,
 675                                     bss_conf->aid);
 676                         wcn36xx_smd_set_link_st(wcn,
 677                                                 bss_conf->bssid,
 678                                                 vif->addr,
 679                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 680                 }
 681         }
 682
 683         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 684                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
 685                 skb = ieee80211_proberesp_get(hw, vif);
 686                 if (!skb) {
 687                         wcn36xx_err("failed to alloc probereq skb\n");
 688                         goto out;
 689                 }
 690
 691                 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
 692                 dev_kfree_skb(skb);
 693         }
 694
 695         if (changed & BSS_CHANGED_BEACON_ENABLED ||
 696             changed & BSS_CHANGED_BEACON) {
 697                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 698                             "mac bss changed beacon enabled %d\n",
 699                             bss_conf->enable_beacon);
 700
 701                 if (bss_conf->enable_beacon) {
 702                         vif_priv->dtim_period = bss_conf->dtim_period;
 703                         vif_priv->bss_index = 0xff;
 704                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 705                                                vif->addr, false);
 706                         skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
 707                                                        &tim_len);
 708                         if (!skb) {
 709                                 wcn36xx_err("failed to alloc beacon skb\n");
 710                                 goto out;
 711                         }
 712                         wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
 713                         dev_kfree_skb(skb);
 714
 715                         if (vif->type == NL80211_IFTYPE_ADHOC ||
 716                             vif->type == NL80211_IFTYPE_MESH_POINT)
 717                                 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
 718                         else
 719                                 link_state = WCN36XX_HAL_LINK_AP_STATE;
 720
 721                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 722                                                 link_state);
 723                 } else {
 724                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 725                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 726                         wcn36xx_smd_delete_bss(wcn, vif);
 727                 }
 728         }
 729 out:
 730         return;
 731 }
 732
 733 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
 734 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 735 {
 736         struct wcn36xx *wcn = hw->priv;
 737         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
 738
 739         wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
 740         return 0;
 741 }
 742
 743 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
 744                                      struct ieee80211_vif *vif)
 745 {
 746         struct wcn36xx *wcn = hw->priv;
 747         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
 748         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
 749
 750         list_del(&vif_priv->list);
 751         wcn36xx_smd_delete_sta_self(wcn, vif->addr);
 752 }
 753
 754 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
 755                                  struct ieee80211_vif *vif)
 756 {
 757         struct wcn36xx *wcn = hw->priv;
 758         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
 759
 760         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
 761                     vif, vif->type);
 762
 763         if (!(NL80211_IFTYPE_STATION == vif->type ||
 764               NL80211_IFTYPE_AP == vif->type ||
 765               NL80211_IFTYPE_ADHOC == vif->type ||
 766               NL80211_IFTYPE_MESH_POINT == vif->type)) {
 767                 wcn36xx_warn("Unsupported interface type requested: %d\n",
 768                              vif->type);
 769                 return -EOPNOTSUPP;
 770         }
 771
 772         list_add(&vif_priv->list, &wcn->vif_list);
 773         wcn36xx_smd_add_sta_self(wcn, vif);
 774
 775         return 0;
 776 }
 777
 778 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 779                            struct ieee80211_sta *sta)
 780 {
 781         struct wcn36xx *wcn = hw->priv;
 782         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
 783         struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
 784         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
 785                     vif, sta->addr);
 786
 787         spin_lock_init(&sta_priv->ampdu_lock);
 788         vif_priv->sta = sta_priv;
 789         sta_priv->vif = vif_priv;
 790         /*
 791          * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
 792          * at this stage AID is not available yet.
 793          */
 794         if (NL80211_IFTYPE_STATION != vif->type) {
 795                 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 796                 sta_priv->aid = sta->aid;
 797                 wcn36xx_smd_config_sta(wcn, vif, sta);
 798         }
 799         return 0;
 800 }
 801
 802 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
 803                               struct ieee80211_vif *vif,
 804                               struct ieee80211_sta *sta)
 805 {
 806         struct wcn36xx *wcn = hw->priv;
 807         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
 808         struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
 809
 810         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
 811                     vif, sta->addr, sta_priv->sta_index);
 812
 813         wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
 814         vif_priv->sta = NULL;
 815         sta_priv->vif = NULL;
 816         return 0;
 817 }
 818
 819 #ifdef CONFIG_PM
 820
 821 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
 822 {
 823         struct wcn36xx *wcn = hw->priv;
 824
 825         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
 826
 827         flush_workqueue(wcn->hal_ind_wq);
 828         wcn36xx_smd_set_power_params(wcn, true);
 829         return 0;
 830 }
 831
 832 static int wcn36xx_resume(struct ieee80211_hw *hw)
 833 {
 834         struct wcn36xx *wcn = hw->priv;
 835
 836         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
 837
 838         flush_workqueue(wcn->hal_ind_wq);
 839         wcn36xx_smd_set_power_params(wcn, false);
 840         return 0;
 841 }
 842
 843 #endif
 844
 845 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
 846                     struct ieee80211_vif *vif,
 847                     enum ieee80211_ampdu_mlme_action action,
 848                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 849                     u8 buf_size, bool amsdu)
 850 {
 851         struct wcn36xx *wcn = hw->priv;
 852         struct wcn36xx_sta *sta_priv = NULL;
 853
 854         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
 855                     action, tid);
 856
 857         sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
 858
 859         switch (action) {
 860         case IEEE80211_AMPDU_RX_START:
 861                 sta_priv->tid = tid;
 862                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
 863                         get_sta_index(vif, sta_priv));
 864                 wcn36xx_smd_add_ba(wcn);
 865                 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv));
 866                 break;
 867         case IEEE80211_AMPDU_RX_STOP:
 868                 wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
 869                 break;
 870         case IEEE80211_AMPDU_TX_START:
 871                 spin_lock_bh(&sta_priv->ampdu_lock);
 872                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
 873                 spin_unlock_bh(&sta_priv->ampdu_lock);
 874
 875                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 876                 break;
 877         case IEEE80211_AMPDU_TX_OPERATIONAL:
 878                 spin_lock_bh(&sta_priv->ampdu_lock);
 879                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
 880                 spin_unlock_bh(&sta_priv->ampdu_lock);
 881
 882                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
 883                         get_sta_index(vif, sta_priv));
 884                 break;
 885         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 886         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 887         case IEEE80211_AMPDU_TX_STOP_CONT:
 888                 spin_lock_bh(&sta_priv->ampdu_lock);
 889                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
 890                 spin_unlock_bh(&sta_priv->ampdu_lock);
 891
 892                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 893                 break;
 894         default:
 895                 wcn36xx_err("Unknown AMPDU action\n");
 896         }
 897
 898         return 0;
 899 }
 900
 901 static const struct ieee80211_ops wcn36xx_ops = {
 902         .start                  = wcn36xx_start,
 903         .stop                   = wcn36xx_stop,
 904         .add_interface          = wcn36xx_add_interface,
 905         .remove_interface       = wcn36xx_remove_interface,
 906 #ifdef CONFIG_PM
 907         .suspend                = wcn36xx_suspend,
 908         .resume                 = wcn36xx_resume,
 909 #endif
 910         .config                 = wcn36xx_config,
 911         .configure_filter       = wcn36xx_configure_filter,
 912         .tx                     = wcn36xx_tx,
 913         .set_key                = wcn36xx_set_key,
 914         .sw_scan_start          = wcn36xx_sw_scan_start,
 915         .sw_scan_complete       = wcn36xx_sw_scan_complete,
 916         .bss_info_changed       = wcn36xx_bss_info_changed,
 917         .set_rts_threshold      = wcn36xx_set_rts_threshold,
 918         .sta_add                = wcn36xx_sta_add,
 919         .sta_remove             = wcn36xx_sta_remove,
 920         .ampdu_action           = wcn36xx_ampdu_action,
 921 };
 922
 923 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
 924 {
 925         int ret = 0;
 926
 927         static const u32 cipher_suites[] = {
 928                 WLAN_CIPHER_SUITE_WEP40,
 929                 WLAN_CIPHER_SUITE_WEP104,
 930                 WLAN_CIPHER_SUITE_TKIP,
 931                 WLAN_CIPHER_SUITE_CCMP,
 932         };
 933
 934         ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
 935         ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
 936         ieee80211_hw_set(wcn->hw, CONNECTION_MONITOR);
 937         ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
 938         ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
 939         ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
 940
 941         /* 3620 powersaving currently unstable */
 942         if (wcn->chip_version == WCN36XX_CHIP_3620)
 943                 wcn->hw->flags &= ~IEEE80211_HW_SUPPORTS_PS;
 944
 945         wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 946                 BIT(NL80211_IFTYPE_AP) |
 947                 BIT(NL80211_IFTYPE_ADHOC) |
 948                 BIT(NL80211_IFTYPE_MESH_POINT);
 949
 950         wcn->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wcn_band_2ghz;
 951         wcn->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wcn_band_5ghz;
 952
 953         wcn->hw->wiphy->cipher_suites = cipher_suites;
 954         wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
 955
 956         wcn->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
 957
 958 #ifdef CONFIG_PM
 959         wcn->hw->wiphy->wowlan = &wowlan_support;
 960 #endif
 961
 962         wcn->hw->max_listen_interval = 200;
 963
 964         wcn->hw->queues = 4;
 965
 966         SET_IEEE80211_DEV(wcn->hw, wcn->dev);
 967
 968         wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
 969         wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
 970
 971         return ret;
 972 }
 973
 974 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
 975                                           struct platform_device *pdev)
 976 {
 977         struct resource *res;
 978         /* Set TX IRQ */
 979         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
 980                                            "wcnss_wlantx_irq");
 981         if (!res) {
 982                 wcn36xx_err("failed to get tx_irq\n");
 983                 return -ENOENT;
 984         }
 985         wcn->tx_irq = res->start;
 986
 987         /* Set RX IRQ */
 988         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
 989                                            "wcnss_wlanrx_irq");
 990         if (!res) {
 991                 wcn36xx_err("failed to get rx_irq\n");
 992                 return -ENOENT;
 993         }
 994         wcn->rx_irq = res->start;
 995
 996         /* Map the memory */
 997         res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
 998                                                  "wcnss_mmio");
 999         if (!res) {
1000                 wcn36xx_err("failed to get mmio\n");
1001                 return -ENOENT;
1002         }
1003         wcn->mmio = ioremap(res->start, resource_size(res));
1004         if (!wcn->mmio) {
1005                 wcn36xx_err("failed to map io memory\n");
1006                 return -ENOMEM;
1007         }
1008         return 0;
1009 }
1010
1011 static int wcn36xx_probe(struct platform_device *pdev)
1012 {
1013         struct ieee80211_hw *hw;
1014         struct wcn36xx *wcn;
1015         int ret;
1016         u8 addr[ETH_ALEN];
1017
1018         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1019
1020         hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1021         if (!hw) {
1022                 wcn36xx_err("failed to alloc hw\n");
1023                 ret = -ENOMEM;
1024                 goto out_err;
1025         }
1026         platform_set_drvdata(pdev, hw);
1027         wcn = hw->priv;
1028         wcn->hw = hw;
1029         wcn->dev = &pdev->dev;
1030         wcn->ctrl_ops = pdev->dev.platform_data;
1031         if (!wcn->ctrl_ops->get_chip_type) {
1032                 dev_err(&pdev->dev, "Missing ops->get_chip_type\n");
1033                 return -EINVAL;
1034         }
1035         wcn->chip_version = wcn->ctrl_ops->get_chip_type();
1036
1037         mutex_init(&wcn->hal_mutex);
1038
1039         if (!wcn->ctrl_ops->get_hw_mac(addr)) {
1040                 wcn36xx_info("mac address: %pM\n", addr);
1041                 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1042         }
1043
1044         ret = wcn36xx_platform_get_resources(wcn, pdev);
1045         if (ret)
1046                 goto out_wq;
1047
1048         wcn36xx_init_ieee80211(wcn);
1049         ret = ieee80211_register_hw(wcn->hw);
1050         if (ret)
1051                 goto out_unmap;
1052
1053         return 0;
1054
1055 out_unmap:
1056         iounmap(wcn->mmio);
1057 out_wq:
1058         ieee80211_free_hw(hw);
1059 out_err:
1060         return ret;
1061 }
1062 static int wcn36xx_remove(struct platform_device *pdev)
1063 {
1064         struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1065         struct wcn36xx *wcn = hw->priv;
1066         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1067
1068         release_firmware(wcn->nv);
1069         mutex_destroy(&wcn->hal_mutex);
1070
1071         ieee80211_unregister_hw(hw);
1072         iounmap(wcn->mmio);
1073         ieee80211_free_hw(hw);
1074
1075         return 0;
1076 }
1077 static const struct platform_device_id wcn36xx_platform_id_table[] = {
1078         {
1079                 .name = "wcn36xx",
1080                 .driver_data = 0
1081         },
1082         {}
1083 };
1084 MODULE_DEVICE_TABLE(platform, wcn36xx_platform_id_table);
1085
1086 static struct platform_driver wcn36xx_driver = {
1087         .probe      = wcn36xx_probe,
1088         .remove     = wcn36xx_remove,
1089         .driver         = {
1090                 .name   = "wcn36xx",
1091         },
1092         .id_table    = wcn36xx_platform_id_table,
1093 };
1094
1095 static int __init wcn36xx_init(void)
1096 {
1097         platform_driver_register(&wcn36xx_driver);
1098         return 0;
1099 }
1100 module_init(wcn36xx_init);
1101
1102 static void __exit wcn36xx_exit(void)
1103 {
1104         platform_driver_unregister(&wcn36xx_driver);
1105 }
1106 module_exit(wcn36xx_exit);
1107
1108 MODULE_LICENSE("Dual BSD/GPL");
1109 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1110 MODULE_FIRMWARE(WLAN_NV_FILE);