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 = container_of((void *)tmp,
 350                                            struct ieee80211_vif,
 351                                            drv_priv);
 352                         wcn36xx_smd_switch_channel(wcn, vif, ch);
 353                 }
 354         }
 355
 356         return 0;
 357 }
 358
 359 #define WCN36XX_SUPPORTED_FILTERS (0)
 360
 361 static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
 362                                      unsigned int changed,
 363                                      unsigned int *total, u64 multicast)
 364 {
 365         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
 366
 367         *total &= WCN36XX_SUPPORTED_FILTERS;
 368 }
 369
 370 static void wcn36xx_tx(struct ieee80211_hw *hw,
 371                        struct ieee80211_tx_control *control,
 372                        struct sk_buff *skb)
 373 {
 374         struct wcn36xx *wcn = hw->priv;
 375         struct wcn36xx_sta *sta_priv = NULL;
 376
 377         if (control->sta)
 378                 sta_priv = (struct wcn36xx_sta *)control->sta->drv_priv;
 379
 380         if (wcn36xx_start_tx(wcn, sta_priv, skb))
 381                 ieee80211_free_txskb(wcn->hw, skb);
 382 }
 383
 384 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 385                            struct ieee80211_vif *vif,
 386                            struct ieee80211_sta *sta,
 387                            struct ieee80211_key_conf *key_conf)
 388 {
 389         struct wcn36xx *wcn = hw->priv;
 390         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
 391         struct wcn36xx_sta *sta_priv = vif_priv->sta;
 392         int ret = 0;
 393         u8 key[WLAN_MAX_KEY_LEN];
 394
 395         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
 396         wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
 397                     cmd, key_conf->cipher, key_conf->keyidx,
 398                     key_conf->keylen, key_conf->flags);
 399         wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
 400                          key_conf->key,
 401                          key_conf->keylen);
 402
 403         switch (key_conf->cipher) {
 404         case WLAN_CIPHER_SUITE_WEP40:
 405                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 406                 break;
 407         case WLAN_CIPHER_SUITE_WEP104:
 408                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 409                 break;
 410         case WLAN_CIPHER_SUITE_CCMP:
 411                 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
 412                 break;
 413         case WLAN_CIPHER_SUITE_TKIP:
 414                 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
 415                 break;
 416         default:
 417                 wcn36xx_err("Unsupported key type 0x%x\n",
 418                               key_conf->cipher);
 419                 ret = -EOPNOTSUPP;
 420                 goto out;
 421         }
 422
 423         switch (cmd) {
 424         case SET_KEY:
 425                 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
 426                         /*
 427                          * Supplicant is sending key in the wrong order:
 428                          * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
 429                          * but HW expects it to be in the order as described in
 430                          * IEEE 802.11 spec (see chapter 11.7) like this:
 431                          * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
 432                          */
 433                         memcpy(key, key_conf->key, 16);
 434                         memcpy(key + 16, key_conf->key + 24, 8);
 435                         memcpy(key + 24, key_conf->key + 16, 8);
 436                 } else {
 437                         memcpy(key, key_conf->key, key_conf->keylen);
 438                 }
 439
 440                 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
 441                         sta_priv->is_data_encrypted = true;
 442                         /* Reconfigure bss with encrypt_type */
 443                         if (NL80211_IFTYPE_STATION == vif->type)
 444                                 wcn36xx_smd_config_bss(wcn,
 445                                                        vif,
 446                                                        sta,
 447                                                        sta->addr,
 448                                                        true);
 449
 450                         wcn36xx_smd_set_stakey(wcn,
 451                                 vif_priv->encrypt_type,
 452                                 key_conf->keyidx,
 453                                 key_conf->keylen,
 454                                 key,
 455                                 get_sta_index(vif, sta_priv));
 456                 } else {
 457                         wcn36xx_smd_set_bsskey(wcn,
 458                                 vif_priv->encrypt_type,
 459                                 key_conf->keyidx,
 460                                 key_conf->keylen,
 461                                 key);
 462                         if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
 463                             (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
 464                                 sta_priv->is_data_encrypted = true;
 465                                 wcn36xx_smd_set_stakey(wcn,
 466                                         vif_priv->encrypt_type,
 467                                         key_conf->keyidx,
 468                                         key_conf->keylen,
 469                                         key,
 470                                         get_sta_index(vif, sta_priv));
 471                         }
 472                 }
 473                 break;
 474         case DISABLE_KEY:
 475                 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
 476                         wcn36xx_smd_remove_bsskey(wcn,
 477                                 vif_priv->encrypt_type,
 478                                 key_conf->keyidx);
 479                 } else {
 480                         sta_priv->is_data_encrypted = false;
 481                         /* do not remove key if disassociated */
 482                         if (sta_priv->aid)
 483                                 wcn36xx_smd_remove_stakey(wcn,
 484                                         vif_priv->encrypt_type,
 485                                         key_conf->keyidx,
 486                                         get_sta_index(vif, sta_priv));
 487                 }
 488                 break;
 489         default:
 490                 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
 491                 ret = -EOPNOTSUPP;
 492                 goto out;
 493         }
 494
 495 out:
 496         return ret;
 497 }
 498
 499 static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
 500                                   struct ieee80211_vif *vif,
 501                                   const u8 *mac_addr)
 502 {
 503         struct wcn36xx *wcn = hw->priv;
 504
 505         wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
 506         wcn36xx_smd_start_scan(wcn);
 507 }
 508
 509 static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
 510                                      struct ieee80211_vif *vif)
 511 {
 512         struct wcn36xx *wcn = hw->priv;
 513
 514         wcn36xx_smd_end_scan(wcn);
 515         wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
 516 }
 517
 518 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
 519                                          enum ieee80211_band band)
 520 {
 521         int i, size;
 522         u16 *rates_table;
 523         struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
 524         u32 rates = sta->supp_rates[band];
 525
 526         memset(&sta_priv->supported_rates, 0,
 527                 sizeof(sta_priv->supported_rates));
 528         sta_priv->supported_rates.op_rate_mode = STA_11n;
 529
 530         size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
 531         rates_table = sta_priv->supported_rates.dsss_rates;
 532         if (band == IEEE80211_BAND_2GHZ) {
 533                 for (i = 0; i < size; i++) {
 534                         if (rates & 0x01) {
 535                                 rates_table[i] = wcn_2ghz_rates[i].hw_value;
 536                                 rates = rates >> 1;
 537                         }
 538                 }
 539         }
 540
 541         size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
 542         rates_table = sta_priv->supported_rates.ofdm_rates;
 543         for (i = 0; i < size; i++) {
 544                 if (rates & 0x01) {
 545                         rates_table[i] = wcn_5ghz_rates[i].hw_value;
 546                         rates = rates >> 1;
 547                 }
 548         }
 549
 550         if (sta->ht_cap.ht_supported) {
 551                 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
 552                         sizeof(sta_priv->supported_rates.supported_mcs_set));
 553                 memcpy(sta_priv->supported_rates.supported_mcs_set,
 554                        sta->ht_cap.mcs.rx_mask,
 555                        sizeof(sta->ht_cap.mcs.rx_mask));
 556         }
 557 }
 558 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
 559 {
 560         u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
 561                 HW_RATE_INDEX_6MBPS,
 562                 HW_RATE_INDEX_9MBPS,
 563                 HW_RATE_INDEX_12MBPS,
 564                 HW_RATE_INDEX_18MBPS,
 565                 HW_RATE_INDEX_24MBPS,
 566                 HW_RATE_INDEX_36MBPS,
 567                 HW_RATE_INDEX_48MBPS,
 568                 HW_RATE_INDEX_54MBPS
 569         };
 570         u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
 571                 HW_RATE_INDEX_1MBPS,
 572                 HW_RATE_INDEX_2MBPS,
 573                 HW_RATE_INDEX_5_5MBPS,
 574                 HW_RATE_INDEX_11MBPS
 575         };
 576
 577         rates->op_rate_mode = STA_11n;
 578         memcpy(rates->dsss_rates, dsss_rates,
 579                 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
 580         memcpy(rates->ofdm_rates, ofdm_rates,
 581                 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
 582         rates->supported_mcs_set[0] = 0xFF;
 583 }
 584 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
 585                                      struct ieee80211_vif *vif,
 586                                      struct ieee80211_bss_conf *bss_conf,
 587                                      u32 changed)
 588 {
 589         struct wcn36xx *wcn = hw->priv;
 590         struct sk_buff *skb = NULL;
 591         u16 tim_off, tim_len;
 592         enum wcn36xx_hal_link_state link_state;
 593         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
 594
 595         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
 596                     vif, changed);
 597
 598         if (changed & BSS_CHANGED_BEACON_INFO) {
 599                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 600                             "mac bss changed dtim period %d\n",
 601                             bss_conf->dtim_period);
 602
 603                 vif_priv->dtim_period = bss_conf->dtim_period;
 604         }
 605
 606         if (changed & BSS_CHANGED_PS) {
 607                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 608                             "mac bss PS set %d\n",
 609                             bss_conf->ps);
 610                 if (bss_conf->ps) {
 611                         wcn36xx_pmc_enter_bmps_state(wcn, vif);
 612                 } else {
 613                         wcn36xx_pmc_exit_bmps_state(wcn, vif);
 614                 }
 615         }
 616
 617         if (changed & BSS_CHANGED_BSSID) {
 618                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
 619                             bss_conf->bssid);
 620
 621                 if (!is_zero_ether_addr(bss_conf->bssid)) {
 622                         vif_priv->is_joining = true;
 623                         vif_priv->bss_index = 0xff;
 624                         wcn36xx_smd_join(wcn, bss_conf->bssid,
 625                                          vif->addr, WCN36XX_HW_CHANNEL(wcn));
 626                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 627                                                bss_conf->bssid, false);
 628                 } else {
 629                         vif_priv->is_joining = false;
 630                         wcn36xx_smd_delete_bss(wcn, vif);
 631                 }
 632         }
 633
 634         if (changed & BSS_CHANGED_SSID) {
 635                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 636                             "mac bss changed ssid\n");
 637                 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
 638                                  bss_conf->ssid, bss_conf->ssid_len);
 639
 640                 vif_priv->ssid.length = bss_conf->ssid_len;
 641                 memcpy(&vif_priv->ssid.ssid,
 642                        bss_conf->ssid,
 643                        bss_conf->ssid_len);
 644         }
 645
 646         if (changed & BSS_CHANGED_ASSOC) {
 647                 vif_priv->is_joining = false;
 648                 if (bss_conf->assoc) {
 649                         struct ieee80211_sta *sta;
 650                         struct wcn36xx_sta *sta_priv;
 651
 652                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 653                                     "mac assoc bss %pM vif %pM AID=%d\n",
 654                                      bss_conf->bssid,
 655                                      vif->addr,
 656                                      bss_conf->aid);
 657
 658                         rcu_read_lock();
 659                         sta = ieee80211_find_sta(vif, bss_conf->bssid);
 660                         if (!sta) {
 661                                 wcn36xx_err("sta %pM is not found\n",
 662                                               bss_conf->bssid);
 663                                 rcu_read_unlock();
 664                                 goto out;
 665                         }
 666                         sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
 667
 668                         wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 669
 670                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
 671                                 vif->addr,
 672                                 WCN36XX_HAL_LINK_POSTASSOC_STATE);
 673                         wcn36xx_smd_config_bss(wcn, vif, sta,
 674                                                bss_conf->bssid,
 675                                                true);
 676                         sta_priv->aid = bss_conf->aid;
 677                         /*
 678                          * config_sta must be called from  because this is the
 679                          * place where AID is available.
 680                          */
 681                         wcn36xx_smd_config_sta(wcn, vif, sta);
 682                         rcu_read_unlock();
 683                 } else {
 684                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 685                                     "disassociated bss %pM vif %pM AID=%d\n",
 686                                     bss_conf->bssid,
 687                                     vif->addr,
 688                                     bss_conf->aid);
 689                         wcn36xx_smd_set_link_st(wcn,
 690                                                 bss_conf->bssid,
 691                                                 vif->addr,
 692                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 693                 }
 694         }
 695
 696         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 697                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
 698                 skb = ieee80211_proberesp_get(hw, vif);
 699                 if (!skb) {
 700                         wcn36xx_err("failed to alloc probereq skb\n");
 701                         goto out;
 702                 }
 703
 704                 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
 705                 dev_kfree_skb(skb);
 706         }
 707
 708         if (changed & BSS_CHANGED_BEACON_ENABLED ||
 709             changed & BSS_CHANGED_BEACON) {
 710                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 711                             "mac bss changed beacon enabled %d\n",
 712                             bss_conf->enable_beacon);
 713
 714                 if (bss_conf->enable_beacon) {
 715                         vif_priv->dtim_period = bss_conf->dtim_period;
 716                         vif_priv->bss_index = 0xff;
 717                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 718                                                vif->addr, false);
 719                         skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
 720                                                        &tim_len);
 721                         if (!skb) {
 722                                 wcn36xx_err("failed to alloc beacon skb\n");
 723                                 goto out;
 724                         }
 725                         wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
 726                         dev_kfree_skb(skb);
 727
 728                         if (vif->type == NL80211_IFTYPE_ADHOC ||
 729                             vif->type == NL80211_IFTYPE_MESH_POINT)
 730                                 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
 731                         else
 732                                 link_state = WCN36XX_HAL_LINK_AP_STATE;
 733
 734                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 735                                                 link_state);
 736                 } else {
 737                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 738                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 739                         wcn36xx_smd_delete_bss(wcn, vif);
 740                 }
 741         }
 742 out:
 743         return;
 744 }
 745
 746 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
 747 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 748 {
 749         struct wcn36xx *wcn = hw->priv;
 750         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
 751
 752         wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
 753         return 0;
 754 }
 755
 756 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
 757                                      struct ieee80211_vif *vif)
 758 {
 759         struct wcn36xx *wcn = hw->priv;
 760         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
 761         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
 762
 763         list_del(&vif_priv->list);
 764         wcn36xx_smd_delete_sta_self(wcn, vif->addr);
 765 }
 766
 767 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
 768                                  struct ieee80211_vif *vif)
 769 {
 770         struct wcn36xx *wcn = hw->priv;
 771         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
 772
 773         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
 774                     vif, vif->type);
 775
 776         if (!(NL80211_IFTYPE_STATION == vif->type ||
 777               NL80211_IFTYPE_AP == vif->type ||
 778               NL80211_IFTYPE_ADHOC == vif->type ||
 779               NL80211_IFTYPE_MESH_POINT == vif->type)) {
 780                 wcn36xx_warn("Unsupported interface type requested: %d\n",
 781                              vif->type);
 782                 return -EOPNOTSUPP;
 783         }
 784
 785         list_add(&vif_priv->list, &wcn->vif_list);
 786         wcn36xx_smd_add_sta_self(wcn, vif);
 787
 788         return 0;
 789 }
 790
 791 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 792                            struct ieee80211_sta *sta)
 793 {
 794         struct wcn36xx *wcn = hw->priv;
 795         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
 796         struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
 797         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
 798                     vif, sta->addr);
 799
 800         spin_lock_init(&sta_priv->ampdu_lock);
 801         vif_priv->sta = sta_priv;
 802         sta_priv->vif = vif_priv;
 803         /*
 804          * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
 805          * at this stage AID is not available yet.
 806          */
 807         if (NL80211_IFTYPE_STATION != vif->type) {
 808                 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 809                 sta_priv->aid = sta->aid;
 810                 wcn36xx_smd_config_sta(wcn, vif, sta);
 811         }
 812         return 0;
 813 }
 814
 815 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
 816                               struct ieee80211_vif *vif,
 817                               struct ieee80211_sta *sta)
 818 {
 819         struct wcn36xx *wcn = hw->priv;
 820         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
 821         struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
 822
 823         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
 824                     vif, sta->addr, sta_priv->sta_index);
 825
 826         wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
 827         vif_priv->sta = NULL;
 828         sta_priv->vif = NULL;
 829         return 0;
 830 }
 831
 832 #ifdef CONFIG_PM
 833
 834 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
 835 {
 836         struct wcn36xx *wcn = hw->priv;
 837
 838         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
 839
 840         flush_workqueue(wcn->hal_ind_wq);
 841         wcn36xx_smd_set_power_params(wcn, true);
 842         return 0;
 843 }
 844
 845 static int wcn36xx_resume(struct ieee80211_hw *hw)
 846 {
 847         struct wcn36xx *wcn = hw->priv;
 848
 849         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
 850
 851         flush_workqueue(wcn->hal_ind_wq);
 852         wcn36xx_smd_set_power_params(wcn, false);
 853         return 0;
 854 }
 855
 856 #endif
 857
 858 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
 859                     struct ieee80211_vif *vif,
 860                     enum ieee80211_ampdu_mlme_action action,
 861                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 862                     u8 buf_size, bool amsdu)
 863 {
 864         struct wcn36xx *wcn = hw->priv;
 865         struct wcn36xx_sta *sta_priv = NULL;
 866
 867         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
 868                     action, tid);
 869
 870         sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
 871
 872         switch (action) {
 873         case IEEE80211_AMPDU_RX_START:
 874                 sta_priv->tid = tid;
 875                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
 876                         get_sta_index(vif, sta_priv));
 877                 wcn36xx_smd_add_ba(wcn);
 878                 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv));
 879                 break;
 880         case IEEE80211_AMPDU_RX_STOP:
 881                 wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
 882                 break;
 883         case IEEE80211_AMPDU_TX_START:
 884                 spin_lock_bh(&sta_priv->ampdu_lock);
 885                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
 886                 spin_unlock_bh(&sta_priv->ampdu_lock);
 887
 888                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 889                 break;
 890         case IEEE80211_AMPDU_TX_OPERATIONAL:
 891                 spin_lock_bh(&sta_priv->ampdu_lock);
 892                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
 893                 spin_unlock_bh(&sta_priv->ampdu_lock);
 894
 895                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
 896                         get_sta_index(vif, sta_priv));
 897                 break;
 898         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 899         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 900         case IEEE80211_AMPDU_TX_STOP_CONT:
 901                 spin_lock_bh(&sta_priv->ampdu_lock);
 902                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
 903                 spin_unlock_bh(&sta_priv->ampdu_lock);
 904
 905                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 906                 break;
 907         default:
 908                 wcn36xx_err("Unknown AMPDU action\n");
 909         }
 910
 911         return 0;
 912 }
 913
 914 static const struct ieee80211_ops wcn36xx_ops = {
 915         .start                  = wcn36xx_start,
 916         .stop                   = wcn36xx_stop,
 917         .add_interface          = wcn36xx_add_interface,
 918         .remove_interface       = wcn36xx_remove_interface,
 919 #ifdef CONFIG_PM
 920         .suspend                = wcn36xx_suspend,
 921         .resume                 = wcn36xx_resume,
 922 #endif
 923         .config                 = wcn36xx_config,
 924         .configure_filter       = wcn36xx_configure_filter,
 925         .tx                     = wcn36xx_tx,
 926         .set_key                = wcn36xx_set_key,
 927         .sw_scan_start          = wcn36xx_sw_scan_start,
 928         .sw_scan_complete       = wcn36xx_sw_scan_complete,
 929         .bss_info_changed       = wcn36xx_bss_info_changed,
 930         .set_rts_threshold      = wcn36xx_set_rts_threshold,
 931         .sta_add                = wcn36xx_sta_add,
 932         .sta_remove             = wcn36xx_sta_remove,
 933         .ampdu_action           = wcn36xx_ampdu_action,
 934 };
 935
 936 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
 937 {
 938         int ret = 0;
 939
 940         static const u32 cipher_suites[] = {
 941                 WLAN_CIPHER_SUITE_WEP40,
 942                 WLAN_CIPHER_SUITE_WEP104,
 943                 WLAN_CIPHER_SUITE_TKIP,
 944                 WLAN_CIPHER_SUITE_CCMP,
 945         };
 946
 947         ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
 948         ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
 949         ieee80211_hw_set(wcn->hw, CONNECTION_MONITOR);
 950         ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
 951         ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
 952         ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
 953
 954         wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 955                 BIT(NL80211_IFTYPE_AP) |
 956                 BIT(NL80211_IFTYPE_ADHOC) |
 957                 BIT(NL80211_IFTYPE_MESH_POINT);
 958
 959         wcn->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wcn_band_2ghz;
 960         wcn->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wcn_band_5ghz;
 961
 962         wcn->hw->wiphy->cipher_suites = cipher_suites;
 963         wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
 964
 965         wcn->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
 966
 967 #ifdef CONFIG_PM
 968         wcn->hw->wiphy->wowlan = &wowlan_support;
 969 #endif
 970
 971         wcn->hw->max_listen_interval = 200;
 972
 973         wcn->hw->queues = 4;
 974
 975         SET_IEEE80211_DEV(wcn->hw, wcn->dev);
 976
 977         wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
 978         wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
 979
 980         return ret;
 981 }
 982
 983 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
 984                                           struct platform_device *pdev)
 985 {
 986         struct resource *res;
 987         /* Set TX IRQ */
 988         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
 989                                            "wcnss_wlantx_irq");
 990         if (!res) {
 991                 wcn36xx_err("failed to get tx_irq\n");
 992                 return -ENOENT;
 993         }
 994         wcn->tx_irq = res->start;
 995
 996         /* Set RX IRQ */
 997         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
 998                                            "wcnss_wlanrx_irq");
 999         if (!res) {
1000                 wcn36xx_err("failed to get rx_irq\n");
1001                 return -ENOENT;
1002         }
1003         wcn->rx_irq = res->start;
1004
1005         /* Map the memory */
1006         res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
1007                                                  "wcnss_mmio");
1008         if (!res) {
1009                 wcn36xx_err("failed to get mmio\n");
1010                 return -ENOENT;
1011         }
1012         wcn->mmio = ioremap(res->start, resource_size(res));
1013         if (!wcn->mmio) {
1014                 wcn36xx_err("failed to map io memory\n");
1015                 return -ENOMEM;
1016         }
1017         return 0;
1018 }
1019
1020 static int wcn36xx_probe(struct platform_device *pdev)
1021 {
1022         struct ieee80211_hw *hw;
1023         struct wcn36xx *wcn;
1024         int ret;
1025         u8 addr[ETH_ALEN];
1026
1027         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1028
1029         hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1030         if (!hw) {
1031                 wcn36xx_err("failed to alloc hw\n");
1032                 ret = -ENOMEM;
1033                 goto out_err;
1034         }
1035         platform_set_drvdata(pdev, hw);
1036         wcn = hw->priv;
1037         wcn->hw = hw;
1038         wcn->dev = &pdev->dev;
1039         wcn->ctrl_ops = pdev->dev.platform_data;
1040
1041         mutex_init(&wcn->hal_mutex);
1042
1043         if (!wcn->ctrl_ops->get_hw_mac(addr)) {
1044                 wcn36xx_info("mac address: %pM\n", addr);
1045                 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1046         }
1047
1048         ret = wcn36xx_platform_get_resources(wcn, pdev);
1049         if (ret)
1050                 goto out_wq;
1051
1052         wcn36xx_init_ieee80211(wcn);
1053         ret = ieee80211_register_hw(wcn->hw);
1054         if (ret)
1055                 goto out_unmap;
1056
1057         return 0;
1058
1059 out_unmap:
1060         iounmap(wcn->mmio);
1061 out_wq:
1062         ieee80211_free_hw(hw);
1063 out_err:
1064         return ret;
1065 }
1066 static int wcn36xx_remove(struct platform_device *pdev)
1067 {
1068         struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1069         struct wcn36xx *wcn = hw->priv;
1070         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1071
1072         release_firmware(wcn->nv);
1073         mutex_destroy(&wcn->hal_mutex);
1074
1075         ieee80211_unregister_hw(hw);
1076         iounmap(wcn->mmio);
1077         ieee80211_free_hw(hw);
1078
1079         return 0;
1080 }
1081 static const struct platform_device_id wcn36xx_platform_id_table[] = {
1082         {
1083                 .name = "wcn36xx",
1084                 .driver_data = 0
1085         },
1086         {}
1087 };
1088 MODULE_DEVICE_TABLE(platform, wcn36xx_platform_id_table);
1089
1090 static struct platform_driver wcn36xx_driver = {
1091         .probe      = wcn36xx_probe,
1092         .remove     = wcn36xx_remove,
1093         .driver         = {
1094                 .name   = "wcn36xx",
1095         },
1096         .id_table    = wcn36xx_platform_id_table,
1097 };
1098
1099 static int __init wcn36xx_init(void)
1100 {
1101         platform_driver_register(&wcn36xx_driver);
1102         return 0;
1103 }
1104 module_init(wcn36xx_init);
1105
1106 static void __exit wcn36xx_exit(void)
1107 {
1108         platform_driver_unregister(&wcn36xx_driver);
1109 }
1110 module_exit(wcn36xx_exit);
1111
1112 MODULE_LICENSE("Dual BSD/GPL");
1113 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1114 MODULE_FIRMWARE(WLAN_NV_FILE);