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 void wcn36xx_detect_chip_version(struct wcn36xx *wcn)
 225 {
 226         if (get_feat_caps(wcn->fw_feat_caps, DOT11AC)) {
 227                 wcn36xx_info("Chip is 3680\n");
 228                 wcn->chip_version = WCN36XX_CHIP_3680;
 229         } else {
 230                 wcn36xx_info("Chip is 3660\n");
 231                 wcn->chip_version = WCN36XX_CHIP_3660;
 232         }
 233 }
 234
 235 static int wcn36xx_start(struct ieee80211_hw *hw)
 236 {
 237         struct wcn36xx *wcn = hw->priv;
 238         int ret;
 239
 240         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
 241
 242         /* SMD initialization */
 243         ret = wcn36xx_smd_open(wcn);
 244         if (ret) {
 245                 wcn36xx_err("Failed to open smd channel: %d\n", ret);
 246                 goto out_err;
 247         }
 248
 249         /* Allocate memory pools for Mgmt BD headers and Data BD headers */
 250         ret = wcn36xx_dxe_allocate_mem_pools(wcn);
 251         if (ret) {
 252                 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret);
 253                 goto out_smd_close;
 254         }
 255
 256         ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
 257         if (ret) {
 258                 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
 259                 goto out_free_dxe_pool;
 260         }
 261
 262         wcn->hal_buf = kmalloc(WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
 263         if (!wcn->hal_buf) {
 264                 wcn36xx_err("Failed to allocate smd buf\n");
 265                 ret = -ENOMEM;
 266                 goto out_free_dxe_ctl;
 267         }
 268
 269         ret = wcn36xx_smd_load_nv(wcn);
 270         if (ret) {
 271                 wcn36xx_err("Failed to push NV to chip\n");
 272                 goto out_free_smd_buf;
 273         }
 274
 275         ret = wcn36xx_smd_start(wcn);
 276         if (ret) {
 277                 wcn36xx_err("Failed to start chip\n");
 278                 goto out_free_smd_buf;
 279         }
 280
 281         if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
 282                 ret = wcn36xx_smd_feature_caps_exchange(wcn);
 283                 if (ret)
 284                         wcn36xx_warn("Exchange feature caps failed\n");
 285                 else
 286                         wcn36xx_feat_caps_info(wcn);
 287         }
 288
 289         wcn36xx_detect_chip_version(wcn);
 290
 291         /* DMA channel initialization */
 292         ret = wcn36xx_dxe_init(wcn);
 293         if (ret) {
 294                 wcn36xx_err("DXE init failed\n");
 295                 goto out_smd_stop;
 296         }
 297
 298         wcn36xx_debugfs_init(wcn);
 299
 300         INIT_LIST_HEAD(&wcn->vif_list);
 301         spin_lock_init(&wcn->dxe_lock);
 302
 303         return 0;
 304
 305 out_smd_stop:
 306         wcn36xx_smd_stop(wcn);
 307 out_free_smd_buf:
 308         kfree(wcn->hal_buf);
 309 out_free_dxe_pool:
 310         wcn36xx_dxe_free_mem_pools(wcn);
 311 out_free_dxe_ctl:
 312         wcn36xx_dxe_free_ctl_blks(wcn);
 313 out_smd_close:
 314         wcn36xx_smd_close(wcn);
 315 out_err:
 316         return ret;
 317 }
 318
 319 static void wcn36xx_stop(struct ieee80211_hw *hw)
 320 {
 321         struct wcn36xx *wcn = hw->priv;
 322
 323         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
 324
 325         wcn36xx_debugfs_exit(wcn);
 326         wcn36xx_smd_stop(wcn);
 327         wcn36xx_dxe_deinit(wcn);
 328         wcn36xx_smd_close(wcn);
 329
 330         wcn36xx_dxe_free_mem_pools(wcn);
 331         wcn36xx_dxe_free_ctl_blks(wcn);
 332
 333         kfree(wcn->hal_buf);
 334 }
 335
 336 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
 337 {
 338         struct wcn36xx *wcn = hw->priv;
 339         struct ieee80211_vif *vif = NULL;
 340         struct wcn36xx_vif *tmp;
 341
 342         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
 343
 344         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 345                 int ch = WCN36XX_HW_CHANNEL(wcn);
 346                 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
 347                             ch);
 348                 list_for_each_entry(tmp, &wcn->vif_list, list) {
 349                         vif = wcn36xx_priv_to_vif(tmp);
 350                         wcn36xx_smd_switch_channel(wcn, vif, ch);
 351                 }
 352         }
 353
 354         return 0;
 355 }
 356
 357 #define WCN36XX_SUPPORTED_FILTERS (0)
 358
 359 static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
 360                                      unsigned int changed,
 361                                      unsigned int *total, u64 multicast)
 362 {
 363         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
 364
 365         *total &= WCN36XX_SUPPORTED_FILTERS;
 366 }
 367
 368 static void wcn36xx_tx(struct ieee80211_hw *hw,
 369                        struct ieee80211_tx_control *control,
 370                        struct sk_buff *skb)
 371 {
 372         struct wcn36xx *wcn = hw->priv;
 373         struct wcn36xx_sta *sta_priv = NULL;
 374
 375         if (control->sta)
 376                 sta_priv = (struct wcn36xx_sta *)control->sta->drv_priv;
 377
 378         if (wcn36xx_start_tx(wcn, sta_priv, skb))
 379                 ieee80211_free_txskb(wcn->hw, skb);
 380 }
 381
 382 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 383                            struct ieee80211_vif *vif,
 384                            struct ieee80211_sta *sta,
 385                            struct ieee80211_key_conf *key_conf)
 386 {
 387         struct wcn36xx *wcn = hw->priv;
 388         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 389         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 390         int ret = 0;
 391         u8 key[WLAN_MAX_KEY_LEN];
 392
 393         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
 394         wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
 395                     cmd, key_conf->cipher, key_conf->keyidx,
 396                     key_conf->keylen, key_conf->flags);
 397         wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
 398                          key_conf->key,
 399                          key_conf->keylen);
 400
 401         switch (key_conf->cipher) {
 402         case WLAN_CIPHER_SUITE_WEP40:
 403                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 404                 break;
 405         case WLAN_CIPHER_SUITE_WEP104:
 406                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 407                 break;
 408         case WLAN_CIPHER_SUITE_CCMP:
 409                 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
 410                 break;
 411         case WLAN_CIPHER_SUITE_TKIP:
 412                 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
 413                 break;
 414         default:
 415                 wcn36xx_err("Unsupported key type 0x%x\n",
 416                               key_conf->cipher);
 417                 ret = -EOPNOTSUPP;
 418                 goto out;
 419         }
 420
 421         switch (cmd) {
 422         case SET_KEY:
 423                 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
 424                         /*
 425                          * Supplicant is sending key in the wrong order:
 426                          * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
 427                          * but HW expects it to be in the order as described in
 428                          * IEEE 802.11 spec (see chapter 11.7) like this:
 429                          * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
 430                          */
 431                         memcpy(key, key_conf->key, 16);
 432                         memcpy(key + 16, key_conf->key + 24, 8);
 433                         memcpy(key + 24, key_conf->key + 16, 8);
 434                 } else {
 435                         memcpy(key, key_conf->key, key_conf->keylen);
 436                 }
 437
 438                 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
 439                         sta_priv->is_data_encrypted = true;
 440                         /* Reconfigure bss with encrypt_type */
 441                         if (NL80211_IFTYPE_STATION == vif->type)
 442                                 wcn36xx_smd_config_bss(wcn,
 443                                                        vif,
 444                                                        sta,
 445                                                        sta->addr,
 446                                                        true);
 447
 448                         wcn36xx_smd_set_stakey(wcn,
 449                                 vif_priv->encrypt_type,
 450                                 key_conf->keyidx,
 451                                 key_conf->keylen,
 452                                 key,
 453                                 get_sta_index(vif, sta_priv));
 454                 } else {
 455                         wcn36xx_smd_set_bsskey(wcn,
 456                                 vif_priv->encrypt_type,
 457                                 key_conf->keyidx,
 458                                 key_conf->keylen,
 459                                 key);
 460                         if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
 461                             (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
 462                                 sta_priv->is_data_encrypted = true;
 463                                 wcn36xx_smd_set_stakey(wcn,
 464                                         vif_priv->encrypt_type,
 465                                         key_conf->keyidx,
 466                                         key_conf->keylen,
 467                                         key,
 468                                         get_sta_index(vif, sta_priv));
 469                         }
 470                 }
 471                 break;
 472         case DISABLE_KEY:
 473                 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
 474                         wcn36xx_smd_remove_bsskey(wcn,
 475                                 vif_priv->encrypt_type,
 476                                 key_conf->keyidx);
 477                 } else {
 478                         sta_priv->is_data_encrypted = false;
 479                         /* do not remove key if disassociated */
 480                         if (sta_priv->aid)
 481                                 wcn36xx_smd_remove_stakey(wcn,
 482                                         vif_priv->encrypt_type,
 483                                         key_conf->keyidx,
 484                                         get_sta_index(vif, sta_priv));
 485                 }
 486                 break;
 487         default:
 488                 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
 489                 ret = -EOPNOTSUPP;
 490                 goto out;
 491         }
 492
 493 out:
 494         return ret;
 495 }
 496
 497 static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
 498                                   struct ieee80211_vif *vif,
 499                                   const u8 *mac_addr)
 500 {
 501         struct wcn36xx *wcn = hw->priv;
 502
 503         wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
 504         wcn36xx_smd_start_scan(wcn);
 505 }
 506
 507 static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
 508                                      struct ieee80211_vif *vif)
 509 {
 510         struct wcn36xx *wcn = hw->priv;
 511
 512         wcn36xx_smd_end_scan(wcn);
 513         wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
 514 }
 515
 516 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
 517                                          enum ieee80211_band band)
 518 {
 519         int i, size;
 520         u16 *rates_table;
 521         struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
 522         u32 rates = sta->supp_rates[band];
 523
 524         memset(&sta_priv->supported_rates, 0,
 525                 sizeof(sta_priv->supported_rates));
 526         sta_priv->supported_rates.op_rate_mode = STA_11n;
 527
 528         size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
 529         rates_table = sta_priv->supported_rates.dsss_rates;
 530         if (band == IEEE80211_BAND_2GHZ) {
 531                 for (i = 0; i < size; i++) {
 532                         if (rates & 0x01) {
 533                                 rates_table[i] = wcn_2ghz_rates[i].hw_value;
 534                                 rates = rates >> 1;
 535                         }
 536                 }
 537         }
 538
 539         size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
 540         rates_table = sta_priv->supported_rates.ofdm_rates;
 541         for (i = 0; i < size; i++) {
 542                 if (rates & 0x01) {
 543                         rates_table[i] = wcn_5ghz_rates[i].hw_value;
 544                         rates = rates >> 1;
 545                 }
 546         }
 547
 548         if (sta->ht_cap.ht_supported) {
 549                 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
 550                         sizeof(sta_priv->supported_rates.supported_mcs_set));
 551                 memcpy(sta_priv->supported_rates.supported_mcs_set,
 552                        sta->ht_cap.mcs.rx_mask,
 553                        sizeof(sta->ht_cap.mcs.rx_mask));
 554         }
 555 }
 556 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
 557 {
 558         u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
 559                 HW_RATE_INDEX_6MBPS,
 560                 HW_RATE_INDEX_9MBPS,
 561                 HW_RATE_INDEX_12MBPS,
 562                 HW_RATE_INDEX_18MBPS,
 563                 HW_RATE_INDEX_24MBPS,
 564                 HW_RATE_INDEX_36MBPS,
 565                 HW_RATE_INDEX_48MBPS,
 566                 HW_RATE_INDEX_54MBPS
 567         };
 568         u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
 569                 HW_RATE_INDEX_1MBPS,
 570                 HW_RATE_INDEX_2MBPS,
 571                 HW_RATE_INDEX_5_5MBPS,
 572                 HW_RATE_INDEX_11MBPS
 573         };
 574
 575         rates->op_rate_mode = STA_11n;
 576         memcpy(rates->dsss_rates, dsss_rates,
 577                 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
 578         memcpy(rates->ofdm_rates, ofdm_rates,
 579                 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
 580         rates->supported_mcs_set[0] = 0xFF;
 581 }
 582 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
 583                                      struct ieee80211_vif *vif,
 584                                      struct ieee80211_bss_conf *bss_conf,
 585                                      u32 changed)
 586 {
 587         struct wcn36xx *wcn = hw->priv;
 588         struct sk_buff *skb = NULL;
 589         u16 tim_off, tim_len;
 590         enum wcn36xx_hal_link_state link_state;
 591         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 592
 593         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
 594                     vif, changed);
 595
 596         if (changed & BSS_CHANGED_BEACON_INFO) {
 597                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 598                             "mac bss changed dtim period %d\n",
 599                             bss_conf->dtim_period);
 600
 601                 vif_priv->dtim_period = bss_conf->dtim_period;
 602         }
 603
 604         if (changed & BSS_CHANGED_PS) {
 605                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 606                             "mac bss PS set %d\n",
 607                             bss_conf->ps);
 608                 if (bss_conf->ps) {
 609                         wcn36xx_pmc_enter_bmps_state(wcn, vif);
 610                 } else {
 611                         wcn36xx_pmc_exit_bmps_state(wcn, vif);
 612                 }
 613         }
 614
 615         if (changed & BSS_CHANGED_BSSID) {
 616                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
 617                             bss_conf->bssid);
 618
 619                 if (!is_zero_ether_addr(bss_conf->bssid)) {
 620                         vif_priv->is_joining = true;
 621                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 622                         wcn36xx_smd_join(wcn, bss_conf->bssid,
 623                                          vif->addr, WCN36XX_HW_CHANNEL(wcn));
 624                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 625                                                bss_conf->bssid, false);
 626                 } else {
 627                         vif_priv->is_joining = false;
 628                         wcn36xx_smd_delete_bss(wcn, vif);
 629                 }
 630         }
 631
 632         if (changed & BSS_CHANGED_SSID) {
 633                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 634                             "mac bss changed ssid\n");
 635                 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
 636                                  bss_conf->ssid, bss_conf->ssid_len);
 637
 638                 vif_priv->ssid.length = bss_conf->ssid_len;
 639                 memcpy(&vif_priv->ssid.ssid,
 640                        bss_conf->ssid,
 641                        bss_conf->ssid_len);
 642         }
 643
 644         if (changed & BSS_CHANGED_ASSOC) {
 645                 vif_priv->is_joining = false;
 646                 if (bss_conf->assoc) {
 647                         struct ieee80211_sta *sta;
 648                         struct wcn36xx_sta *sta_priv;
 649
 650                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 651                                     "mac assoc bss %pM vif %pM AID=%d\n",
 652                                      bss_conf->bssid,
 653                                      vif->addr,
 654                                      bss_conf->aid);
 655
 656                         rcu_read_lock();
 657                         sta = ieee80211_find_sta(vif, bss_conf->bssid);
 658                         if (!sta) {
 659                                 wcn36xx_err("sta %pM is not found\n",
 660                                               bss_conf->bssid);
 661                                 rcu_read_unlock();
 662                                 goto out;
 663                         }
 664                         sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
 665
 666                         wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 667
 668                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
 669                                 vif->addr,
 670                                 WCN36XX_HAL_LINK_POSTASSOC_STATE);
 671                         wcn36xx_smd_config_bss(wcn, vif, sta,
 672                                                bss_conf->bssid,
 673                                                true);
 674                         sta_priv->aid = bss_conf->aid;
 675                         /*
 676                          * config_sta must be called from  because this is the
 677                          * place where AID is available.
 678                          */
 679                         wcn36xx_smd_config_sta(wcn, vif, sta);
 680                         rcu_read_unlock();
 681                 } else {
 682                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 683                                     "disassociated bss %pM vif %pM AID=%d\n",
 684                                     bss_conf->bssid,
 685                                     vif->addr,
 686                                     bss_conf->aid);
 687                         wcn36xx_smd_set_link_st(wcn,
 688                                                 bss_conf->bssid,
 689                                                 vif->addr,
 690                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 691                 }
 692         }
 693
 694         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 695                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
 696                 skb = ieee80211_proberesp_get(hw, vif);
 697                 if (!skb) {
 698                         wcn36xx_err("failed to alloc probereq skb\n");
 699                         goto out;
 700                 }
 701
 702                 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
 703                 dev_kfree_skb(skb);
 704         }
 705
 706         if (changed & BSS_CHANGED_BEACON_ENABLED ||
 707             changed & BSS_CHANGED_BEACON) {
 708                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 709                             "mac bss changed beacon enabled %d\n",
 710                             bss_conf->enable_beacon);
 711
 712                 if (bss_conf->enable_beacon) {
 713                         vif_priv->dtim_period = bss_conf->dtim_period;
 714                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 715                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 716                                                vif->addr, false);
 717                         skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
 718                                                        &tim_len);
 719                         if (!skb) {
 720                                 wcn36xx_err("failed to alloc beacon skb\n");
 721                                 goto out;
 722                         }
 723                         wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
 724                         dev_kfree_skb(skb);
 725
 726                         if (vif->type == NL80211_IFTYPE_ADHOC ||
 727                             vif->type == NL80211_IFTYPE_MESH_POINT)
 728                                 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
 729                         else
 730                                 link_state = WCN36XX_HAL_LINK_AP_STATE;
 731
 732                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 733                                                 link_state);
 734                 } else {
 735                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 736                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 737                         wcn36xx_smd_delete_bss(wcn, vif);
 738                 }
 739         }
 740 out:
 741         return;
 742 }
 743
 744 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
 745 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 746 {
 747         struct wcn36xx *wcn = hw->priv;
 748         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
 749
 750         wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
 751         return 0;
 752 }
 753
 754 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
 755                                      struct ieee80211_vif *vif)
 756 {
 757         struct wcn36xx *wcn = hw->priv;
 758         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 759         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
 760
 761         list_del(&vif_priv->list);
 762         wcn36xx_smd_delete_sta_self(wcn, vif->addr);
 763 }
 764
 765 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
 766                                  struct ieee80211_vif *vif)
 767 {
 768         struct wcn36xx *wcn = hw->priv;
 769         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 770
 771         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
 772                     vif, vif->type);
 773
 774         if (!(NL80211_IFTYPE_STATION == vif->type ||
 775               NL80211_IFTYPE_AP == vif->type ||
 776               NL80211_IFTYPE_ADHOC == vif->type ||
 777               NL80211_IFTYPE_MESH_POINT == vif->type)) {
 778                 wcn36xx_warn("Unsupported interface type requested: %d\n",
 779                              vif->type);
 780                 return -EOPNOTSUPP;
 781         }
 782
 783         list_add(&vif_priv->list, &wcn->vif_list);
 784         wcn36xx_smd_add_sta_self(wcn, vif);
 785
 786         return 0;
 787 }
 788
 789 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 790                            struct ieee80211_sta *sta)
 791 {
 792         struct wcn36xx *wcn = hw->priv;
 793         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 794         struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
 795         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
 796                     vif, sta->addr);
 797
 798         spin_lock_init(&sta_priv->ampdu_lock);
 799         vif_priv->sta = sta_priv;
 800         sta_priv->vif = vif_priv;
 801         /*
 802          * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
 803          * at this stage AID is not available yet.
 804          */
 805         if (NL80211_IFTYPE_STATION != vif->type) {
 806                 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 807                 sta_priv->aid = sta->aid;
 808                 wcn36xx_smd_config_sta(wcn, vif, sta);
 809         }
 810         return 0;
 811 }
 812
 813 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
 814                               struct ieee80211_vif *vif,
 815                               struct ieee80211_sta *sta)
 816 {
 817         struct wcn36xx *wcn = hw->priv;
 818         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 819         struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
 820
 821         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
 822                     vif, sta->addr, sta_priv->sta_index);
 823
 824         wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
 825         vif_priv->sta = NULL;
 826         sta_priv->vif = NULL;
 827         return 0;
 828 }
 829
 830 #ifdef CONFIG_PM
 831
 832 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
 833 {
 834         struct wcn36xx *wcn = hw->priv;
 835
 836         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
 837
 838         flush_workqueue(wcn->hal_ind_wq);
 839         wcn36xx_smd_set_power_params(wcn, true);
 840         return 0;
 841 }
 842
 843 static int wcn36xx_resume(struct ieee80211_hw *hw)
 844 {
 845         struct wcn36xx *wcn = hw->priv;
 846
 847         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
 848
 849         flush_workqueue(wcn->hal_ind_wq);
 850         wcn36xx_smd_set_power_params(wcn, false);
 851         return 0;
 852 }
 853
 854 #endif
 855
 856 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
 857                     struct ieee80211_vif *vif,
 858                     enum ieee80211_ampdu_mlme_action action,
 859                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 860                     u8 buf_size, bool amsdu)
 861 {
 862         struct wcn36xx *wcn = hw->priv;
 863         struct wcn36xx_sta *sta_priv = NULL;
 864
 865         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
 866                     action, tid);
 867
 868         sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
 869
 870         switch (action) {
 871         case IEEE80211_AMPDU_RX_START:
 872                 sta_priv->tid = tid;
 873                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
 874                         get_sta_index(vif, sta_priv));
 875                 wcn36xx_smd_add_ba(wcn);
 876                 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv));
 877                 break;
 878         case IEEE80211_AMPDU_RX_STOP:
 879                 wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
 880                 break;
 881         case IEEE80211_AMPDU_TX_START:
 882                 spin_lock_bh(&sta_priv->ampdu_lock);
 883                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
 884                 spin_unlock_bh(&sta_priv->ampdu_lock);
 885
 886                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 887                 break;
 888         case IEEE80211_AMPDU_TX_OPERATIONAL:
 889                 spin_lock_bh(&sta_priv->ampdu_lock);
 890                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
 891                 spin_unlock_bh(&sta_priv->ampdu_lock);
 892
 893                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
 894                         get_sta_index(vif, sta_priv));
 895                 break;
 896         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 897         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 898         case IEEE80211_AMPDU_TX_STOP_CONT:
 899                 spin_lock_bh(&sta_priv->ampdu_lock);
 900                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
 901                 spin_unlock_bh(&sta_priv->ampdu_lock);
 902
 903                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 904                 break;
 905         default:
 906                 wcn36xx_err("Unknown AMPDU action\n");
 907         }
 908
 909         return 0;
 910 }
 911
 912 static const struct ieee80211_ops wcn36xx_ops = {
 913         .start                  = wcn36xx_start,
 914         .stop                   = wcn36xx_stop,
 915         .add_interface          = wcn36xx_add_interface,
 916         .remove_interface       = wcn36xx_remove_interface,
 917 #ifdef CONFIG_PM
 918         .suspend                = wcn36xx_suspend,
 919         .resume                 = wcn36xx_resume,
 920 #endif
 921         .config                 = wcn36xx_config,
 922         .configure_filter       = wcn36xx_configure_filter,
 923         .tx                     = wcn36xx_tx,
 924         .set_key                = wcn36xx_set_key,
 925         .sw_scan_start          = wcn36xx_sw_scan_start,
 926         .sw_scan_complete       = wcn36xx_sw_scan_complete,
 927         .bss_info_changed       = wcn36xx_bss_info_changed,
 928         .set_rts_threshold      = wcn36xx_set_rts_threshold,
 929         .sta_add                = wcn36xx_sta_add,
 930         .sta_remove             = wcn36xx_sta_remove,
 931         .ampdu_action           = wcn36xx_ampdu_action,
 932 };
 933
 934 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
 935 {
 936         int ret = 0;
 937
 938         static const u32 cipher_suites[] = {
 939                 WLAN_CIPHER_SUITE_WEP40,
 940                 WLAN_CIPHER_SUITE_WEP104,
 941                 WLAN_CIPHER_SUITE_TKIP,
 942                 WLAN_CIPHER_SUITE_CCMP,
 943         };
 944
 945         ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
 946         ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
 947         ieee80211_hw_set(wcn->hw, CONNECTION_MONITOR);
 948         ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
 949         ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
 950         ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
 951
 952         wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 953                 BIT(NL80211_IFTYPE_AP) |
 954                 BIT(NL80211_IFTYPE_ADHOC) |
 955                 BIT(NL80211_IFTYPE_MESH_POINT);
 956
 957         wcn->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wcn_band_2ghz;
 958         wcn->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wcn_band_5ghz;
 959
 960         wcn->hw->wiphy->cipher_suites = cipher_suites;
 961         wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
 962
 963         wcn->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
 964
 965 #ifdef CONFIG_PM
 966         wcn->hw->wiphy->wowlan = &wowlan_support;
 967 #endif
 968
 969         wcn->hw->max_listen_interval = 200;
 970
 971         wcn->hw->queues = 4;
 972
 973         SET_IEEE80211_DEV(wcn->hw, wcn->dev);
 974
 975         wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
 976         wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
 977
 978         return ret;
 979 }
 980
 981 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
 982                                           struct platform_device *pdev)
 983 {
 984         struct resource *res;
 985         /* Set TX IRQ */
 986         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
 987                                            "wcnss_wlantx_irq");
 988         if (!res) {
 989                 wcn36xx_err("failed to get tx_irq\n");
 990                 return -ENOENT;
 991         }
 992         wcn->tx_irq = res->start;
 993
 994         /* Set RX IRQ */
 995         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
 996                                            "wcnss_wlanrx_irq");
 997         if (!res) {
 998                 wcn36xx_err("failed to get rx_irq\n");
 999                 return -ENOENT;
1000         }
1001         wcn->rx_irq = res->start;
1002
1003         /* Map the memory */
1004         res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
1005                                                  "wcnss_mmio");
1006         if (!res) {
1007                 wcn36xx_err("failed to get mmio\n");
1008                 return -ENOENT;
1009         }
1010         wcn->mmio = ioremap(res->start, resource_size(res));
1011         if (!wcn->mmio) {
1012                 wcn36xx_err("failed to map io memory\n");
1013                 return -ENOMEM;
1014         }
1015         return 0;
1016 }
1017
1018 static int wcn36xx_probe(struct platform_device *pdev)
1019 {
1020         struct ieee80211_hw *hw;
1021         struct wcn36xx *wcn;
1022         int ret;
1023         u8 addr[ETH_ALEN];
1024
1025         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1026
1027         hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1028         if (!hw) {
1029                 wcn36xx_err("failed to alloc hw\n");
1030                 ret = -ENOMEM;
1031                 goto out_err;
1032         }
1033         platform_set_drvdata(pdev, hw);
1034         wcn = hw->priv;
1035         wcn->hw = hw;
1036         wcn->dev = &pdev->dev;
1037         wcn->ctrl_ops = pdev->dev.platform_data;
1038
1039         mutex_init(&wcn->hal_mutex);
1040
1041         if (!wcn->ctrl_ops->get_hw_mac(addr)) {
1042                 wcn36xx_info("mac address: %pM\n", addr);
1043                 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1044         }
1045
1046         ret = wcn36xx_platform_get_resources(wcn, pdev);
1047         if (ret)
1048                 goto out_wq;
1049
1050         wcn36xx_init_ieee80211(wcn);
1051         ret = ieee80211_register_hw(wcn->hw);
1052         if (ret)
1053                 goto out_unmap;
1054
1055         return 0;
1056
1057 out_unmap:
1058         iounmap(wcn->mmio);
1059 out_wq:
1060         ieee80211_free_hw(hw);
1061 out_err:
1062         return ret;
1063 }
1064 static int wcn36xx_remove(struct platform_device *pdev)
1065 {
1066         struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1067         struct wcn36xx *wcn = hw->priv;
1068         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1069
1070         release_firmware(wcn->nv);
1071         mutex_destroy(&wcn->hal_mutex);
1072
1073         ieee80211_unregister_hw(hw);
1074         iounmap(wcn->mmio);
1075         ieee80211_free_hw(hw);
1076
1077         return 0;
1078 }
1079 static const struct platform_device_id wcn36xx_platform_id_table[] = {
1080         {
1081                 .name = "wcn36xx",
1082                 .driver_data = 0
1083         },
1084         {}
1085 };
1086 MODULE_DEVICE_TABLE(platform, wcn36xx_platform_id_table);
1087
1088 static struct platform_driver wcn36xx_driver = {
1089         .probe      = wcn36xx_probe,
1090         .remove     = wcn36xx_remove,
1091         .driver         = {
1092                 .name   = "wcn36xx",
1093         },
1094         .id_table    = wcn36xx_platform_id_table,
1095 };
1096
1097 static int __init wcn36xx_init(void)
1098 {
1099         platform_driver_register(&wcn36xx_driver);
1100         return 0;
1101 }
1102 module_init(wcn36xx_init);
1103
1104 static void __exit wcn36xx_exit(void)
1105 {
1106         platform_driver_unregister(&wcn36xx_driver);
1107 }
1108 module_exit(wcn36xx_exit);
1109
1110 MODULE_LICENSE("Dual BSD/GPL");
1111 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1112 MODULE_FIRMWARE(WLAN_NV_FILE);