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         "WLAN_ROAM_SCAN_OFFLOAD",       /* 23 */
 206         "SPECULATIVE_PS_POLL",          /* 24 */
 207         "SCAN_SCH",                     /* 25 */
 208         "IBSS_HEARTBEAT_OFFLOAD",       /* 26 */
 209         "WLAN_SCAN_OFFLOAD",            /* 27 */
 210         "WLAN_PERIODIC_TX_PTRN",        /* 28 */
 211         "ADVANCE_TDLS",                 /* 29 */
 212         "BATCH_SCAN",                   /* 30 */
 213         "FW_IN_TX_PATH",                /* 31 */
 214         "EXTENDED_NSOFFLOAD_SLOT",      /* 32 */
 215         "CH_SWITCH_V1",                 /* 33 */
 216         "HT40_OBSS_SCAN",               /* 34 */
 217         "UPDATE_CHANNEL_LIST",          /* 35 */
 218
 219 };
 220
 221 static const char *wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x)
 222 {
 223         if (x >= ARRAY_SIZE(wcn36xx_caps_names))
 224                 return "UNKNOWN";
 225         return wcn36xx_caps_names[x];
 226 }
 227
 228 static void wcn36xx_feat_caps_info(struct wcn36xx *wcn)
 229 {
 230         int i;
 231
 232         for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
 233                 if (get_feat_caps(wcn->fw_feat_caps, i))
 234                         wcn36xx_info("FW Cap %s\n", wcn36xx_get_cap_name(i));
 235         }
 236 }
 237
 238 static int wcn36xx_start(struct ieee80211_hw *hw)
 239 {
 240         struct wcn36xx *wcn = hw->priv;
 241         int ret;
 242
 243         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
 244
 245         /* SMD initialization */
 246         ret = wcn36xx_smd_open(wcn);
 247         if (ret) {
 248                 wcn36xx_err("Failed to open smd channel: %d\n", ret);
 249                 goto out_err;
 250         }
 251
 252         /* Allocate memory pools for Mgmt BD headers and Data BD headers */
 253         ret = wcn36xx_dxe_allocate_mem_pools(wcn);
 254         if (ret) {
 255                 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret);
 256                 goto out_smd_close;
 257         }
 258
 259         ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
 260         if (ret) {
 261                 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
 262                 goto out_free_dxe_pool;
 263         }
 264
 265         wcn->hal_buf = kmalloc(WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
 266         if (!wcn->hal_buf) {
 267                 wcn36xx_err("Failed to allocate smd buf\n");
 268                 ret = -ENOMEM;
 269                 goto out_free_dxe_ctl;
 270         }
 271
 272         ret = wcn36xx_smd_load_nv(wcn);
 273         if (ret) {
 274                 wcn36xx_err("Failed to push NV to chip\n");
 275                 goto out_free_smd_buf;
 276         }
 277
 278         ret = wcn36xx_smd_start(wcn);
 279         if (ret) {
 280                 wcn36xx_err("Failed to start chip\n");
 281                 goto out_free_smd_buf;
 282         }
 283
 284         if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
 285                 ret = wcn36xx_smd_feature_caps_exchange(wcn);
 286                 if (ret)
 287                         wcn36xx_warn("Exchange feature caps failed\n");
 288                 else
 289                         wcn36xx_feat_caps_info(wcn);
 290         }
 291
 292         wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_ENABLE_MC_ADDR_LIST, 1);
 293
 294         /* DMA channel initialization */
 295         ret = wcn36xx_dxe_init(wcn);
 296         if (ret) {
 297                 wcn36xx_err("DXE init failed\n");
 298                 goto out_smd_stop;
 299         }
 300
 301         wcn36xx_debugfs_init(wcn);
 302
 303         INIT_LIST_HEAD(&wcn->vif_list);
 304         spin_lock_init(&wcn->dxe_lock);
 305
 306         return 0;
 307
 308 out_smd_stop:
 309         wcn36xx_smd_stop(wcn);
 310 out_free_smd_buf:
 311         kfree(wcn->hal_buf);
 312 out_free_dxe_pool:
 313         wcn36xx_dxe_free_mem_pools(wcn);
 314 out_free_dxe_ctl:
 315         wcn36xx_dxe_free_ctl_blks(wcn);
 316 out_smd_close:
 317         wcn36xx_smd_close(wcn);
 318 out_err:
 319         return ret;
 320 }
 321
 322 static void wcn36xx_stop(struct ieee80211_hw *hw)
 323 {
 324         struct wcn36xx *wcn = hw->priv;
 325
 326         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
 327
 328         wcn36xx_debugfs_exit(wcn);
 329         wcn36xx_smd_stop(wcn);
 330         wcn36xx_dxe_deinit(wcn);
 331         wcn36xx_smd_close(wcn);
 332
 333         wcn36xx_dxe_free_mem_pools(wcn);
 334         wcn36xx_dxe_free_ctl_blks(wcn);
 335
 336         kfree(wcn->hal_buf);
 337 }
 338
 339 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
 340 {
 341         struct wcn36xx *wcn = hw->priv;
 342         struct ieee80211_vif *vif = NULL;
 343         struct wcn36xx_vif *tmp;
 344
 345         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
 346
 347         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 348                 int ch = WCN36XX_HW_CHANNEL(wcn);
 349                 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
 350                             ch);
 351                 list_for_each_entry(tmp, &wcn->vif_list, list) {
 352                         vif = wcn36xx_priv_to_vif(tmp);
 353                         wcn36xx_smd_switch_channel(wcn, vif, ch);
 354                 }
 355         }
 356
 357         return 0;
 358 }
 359
 360 #define WCN36XX_SUPPORTED_FILTERS (FIF_ALLMULTI)
 361
 362 static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
 363                                      unsigned int changed,
 364                                      unsigned int *total, u64 multicast)
 365 {
 366         struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
 367         struct wcn36xx *wcn = hw->priv;
 368         struct wcn36xx_vif *tmp;
 369         struct ieee80211_vif *vif = NULL;
 370
 371         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
 372
 373         *total &= WCN36XX_SUPPORTED_FILTERS;
 374
 375         fp = (void *)(unsigned long)multicast;
 376         list_for_each_entry(tmp, &wcn->vif_list, list) {
 377                 vif = wcn36xx_priv_to_vif(tmp);
 378
 379                 /* FW handles MC filtering only when connected as STA */
 380                 if (*total & FIF_ALLMULTI)
 381                         wcn36xx_smd_set_mc_list(wcn, vif, NULL);
 382                 else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc)
 383                         wcn36xx_smd_set_mc_list(wcn, vif, fp);
 384         }
 385         kfree(fp);
 386 }
 387
 388 static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw,
 389                                      struct netdev_hw_addr_list *mc_list)
 390 {
 391         struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
 392         struct netdev_hw_addr *ha;
 393
 394         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n");
 395         fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
 396         if (!fp) {
 397                 wcn36xx_err("Out of memory setting filters.\n");
 398                 return 0;
 399         }
 400
 401         fp->mc_addr_count = 0;
 402         /* update multicast filtering parameters */
 403         if (netdev_hw_addr_list_count(mc_list) <=
 404             WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) {
 405                 netdev_hw_addr_list_for_each(ha, mc_list) {
 406                         memcpy(fp->mc_addr[fp->mc_addr_count],
 407                                         ha->addr, ETH_ALEN);
 408                         fp->mc_addr_count++;
 409                 }
 410         }
 411
 412         return (u64)(unsigned long)fp;
 413 }
 414
 415 static void wcn36xx_tx(struct ieee80211_hw *hw,
 416                        struct ieee80211_tx_control *control,
 417                        struct sk_buff *skb)
 418 {
 419         struct wcn36xx *wcn = hw->priv;
 420         struct wcn36xx_sta *sta_priv = NULL;
 421
 422         if (control->sta)
 423                 sta_priv = wcn36xx_sta_to_priv(control->sta);
 424
 425         if (wcn36xx_start_tx(wcn, sta_priv, skb))
 426                 ieee80211_free_txskb(wcn->hw, skb);
 427 }
 428
 429 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 430                            struct ieee80211_vif *vif,
 431                            struct ieee80211_sta *sta,
 432                            struct ieee80211_key_conf *key_conf)
 433 {
 434         struct wcn36xx *wcn = hw->priv;
 435         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 436         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 437         int ret = 0;
 438         u8 key[WLAN_MAX_KEY_LEN];
 439
 440         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
 441         wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
 442                     cmd, key_conf->cipher, key_conf->keyidx,
 443                     key_conf->keylen, key_conf->flags);
 444         wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
 445                          key_conf->key,
 446                          key_conf->keylen);
 447
 448         switch (key_conf->cipher) {
 449         case WLAN_CIPHER_SUITE_WEP40:
 450                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 451                 break;
 452         case WLAN_CIPHER_SUITE_WEP104:
 453                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 454                 break;
 455         case WLAN_CIPHER_SUITE_CCMP:
 456                 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
 457                 break;
 458         case WLAN_CIPHER_SUITE_TKIP:
 459                 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
 460                 break;
 461         default:
 462                 wcn36xx_err("Unsupported key type 0x%x\n",
 463                               key_conf->cipher);
 464                 ret = -EOPNOTSUPP;
 465                 goto out;
 466         }
 467
 468         switch (cmd) {
 469         case SET_KEY:
 470                 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
 471                         /*
 472                          * Supplicant is sending key in the wrong order:
 473                          * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
 474                          * but HW expects it to be in the order as described in
 475                          * IEEE 802.11 spec (see chapter 11.7) like this:
 476                          * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
 477                          */
 478                         memcpy(key, key_conf->key, 16);
 479                         memcpy(key + 16, key_conf->key + 24, 8);
 480                         memcpy(key + 24, key_conf->key + 16, 8);
 481                 } else {
 482                         memcpy(key, key_conf->key, key_conf->keylen);
 483                 }
 484
 485                 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
 486                         sta_priv->is_data_encrypted = true;
 487                         /* Reconfigure bss with encrypt_type */
 488                         if (NL80211_IFTYPE_STATION == vif->type)
 489                                 wcn36xx_smd_config_bss(wcn,
 490                                                        vif,
 491                                                        sta,
 492                                                        sta->addr,
 493                                                        true);
 494
 495                         wcn36xx_smd_set_stakey(wcn,
 496                                 vif_priv->encrypt_type,
 497                                 key_conf->keyidx,
 498                                 key_conf->keylen,
 499                                 key,
 500                                 get_sta_index(vif, sta_priv));
 501                 } else {
 502                         wcn36xx_smd_set_bsskey(wcn,
 503                                 vif_priv->encrypt_type,
 504                                 key_conf->keyidx,
 505                                 key_conf->keylen,
 506                                 key);
 507                         if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
 508                             (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
 509                                 sta_priv->is_data_encrypted = true;
 510                                 wcn36xx_smd_set_stakey(wcn,
 511                                         vif_priv->encrypt_type,
 512                                         key_conf->keyidx,
 513                                         key_conf->keylen,
 514                                         key,
 515                                         get_sta_index(vif, sta_priv));
 516                         }
 517                 }
 518                 break;
 519         case DISABLE_KEY:
 520                 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
 521                         vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 522                         wcn36xx_smd_remove_bsskey(wcn,
 523                                 vif_priv->encrypt_type,
 524                                 key_conf->keyidx);
 525                 } else {
 526                         sta_priv->is_data_encrypted = false;
 527                         /* do not remove key if disassociated */
 528                         if (sta_priv->aid)
 529                                 wcn36xx_smd_remove_stakey(wcn,
 530                                         vif_priv->encrypt_type,
 531                                         key_conf->keyidx,
 532                                         get_sta_index(vif, sta_priv));
 533                 }
 534                 break;
 535         default:
 536                 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
 537                 ret = -EOPNOTSUPP;
 538                 goto out;
 539         }
 540
 541 out:
 542         return ret;
 543 }
 544
 545 static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
 546                                   struct ieee80211_vif *vif,
 547                                   const u8 *mac_addr)
 548 {
 549         struct wcn36xx *wcn = hw->priv;
 550
 551         wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
 552         wcn36xx_smd_start_scan(wcn);
 553 }
 554
 555 static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
 556                                      struct ieee80211_vif *vif)
 557 {
 558         struct wcn36xx *wcn = hw->priv;
 559
 560         wcn36xx_smd_end_scan(wcn);
 561         wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
 562 }
 563
 564 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
 565                                          enum ieee80211_band band)
 566 {
 567         int i, size;
 568         u16 *rates_table;
 569         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 570         u32 rates = sta->supp_rates[band];
 571
 572         memset(&sta_priv->supported_rates, 0,
 573                 sizeof(sta_priv->supported_rates));
 574         sta_priv->supported_rates.op_rate_mode = STA_11n;
 575
 576         size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
 577         rates_table = sta_priv->supported_rates.dsss_rates;
 578         if (band == IEEE80211_BAND_2GHZ) {
 579                 for (i = 0; i < size; i++) {
 580                         if (rates & 0x01) {
 581                                 rates_table[i] = wcn_2ghz_rates[i].hw_value;
 582                                 rates = rates >> 1;
 583                         }
 584                 }
 585         }
 586
 587         size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
 588         rates_table = sta_priv->supported_rates.ofdm_rates;
 589         for (i = 0; i < size; i++) {
 590                 if (rates & 0x01) {
 591                         rates_table[i] = wcn_5ghz_rates[i].hw_value;
 592                         rates = rates >> 1;
 593                 }
 594         }
 595
 596         if (sta->ht_cap.ht_supported) {
 597                 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
 598                         sizeof(sta_priv->supported_rates.supported_mcs_set));
 599                 memcpy(sta_priv->supported_rates.supported_mcs_set,
 600                        sta->ht_cap.mcs.rx_mask,
 601                        sizeof(sta->ht_cap.mcs.rx_mask));
 602         }
 603 }
 604 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
 605 {
 606         u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
 607                 HW_RATE_INDEX_6MBPS,
 608                 HW_RATE_INDEX_9MBPS,
 609                 HW_RATE_INDEX_12MBPS,
 610                 HW_RATE_INDEX_18MBPS,
 611                 HW_RATE_INDEX_24MBPS,
 612                 HW_RATE_INDEX_36MBPS,
 613                 HW_RATE_INDEX_48MBPS,
 614                 HW_RATE_INDEX_54MBPS
 615         };
 616         u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
 617                 HW_RATE_INDEX_1MBPS,
 618                 HW_RATE_INDEX_2MBPS,
 619                 HW_RATE_INDEX_5_5MBPS,
 620                 HW_RATE_INDEX_11MBPS
 621         };
 622
 623         rates->op_rate_mode = STA_11n;
 624         memcpy(rates->dsss_rates, dsss_rates,
 625                 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
 626         memcpy(rates->ofdm_rates, ofdm_rates,
 627                 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
 628         rates->supported_mcs_set[0] = 0xFF;
 629 }
 630 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
 631                                      struct ieee80211_vif *vif,
 632                                      struct ieee80211_bss_conf *bss_conf,
 633                                      u32 changed)
 634 {
 635         struct wcn36xx *wcn = hw->priv;
 636         struct sk_buff *skb = NULL;
 637         u16 tim_off, tim_len;
 638         enum wcn36xx_hal_link_state link_state;
 639         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 640
 641         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
 642                     vif, changed);
 643
 644         if (changed & BSS_CHANGED_BEACON_INFO) {
 645                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 646                             "mac bss changed dtim period %d\n",
 647                             bss_conf->dtim_period);
 648
 649                 vif_priv->dtim_period = bss_conf->dtim_period;
 650         }
 651
 652         if (changed & BSS_CHANGED_PS) {
 653                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 654                             "mac bss PS set %d\n",
 655                             bss_conf->ps);
 656                 if (bss_conf->ps) {
 657                         wcn36xx_pmc_enter_bmps_state(wcn, vif);
 658                 } else {
 659                         wcn36xx_pmc_exit_bmps_state(wcn, vif);
 660                 }
 661         }
 662
 663         if (changed & BSS_CHANGED_BSSID) {
 664                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
 665                             bss_conf->bssid);
 666
 667                 if (!is_zero_ether_addr(bss_conf->bssid)) {
 668                         vif_priv->is_joining = true;
 669                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 670                         wcn36xx_smd_join(wcn, bss_conf->bssid,
 671                                          vif->addr, WCN36XX_HW_CHANNEL(wcn));
 672                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 673                                                bss_conf->bssid, false);
 674                 } else {
 675                         vif_priv->is_joining = false;
 676                         wcn36xx_smd_delete_bss(wcn, vif);
 677                         vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 678                 }
 679         }
 680
 681         if (changed & BSS_CHANGED_SSID) {
 682                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 683                             "mac bss changed ssid\n");
 684                 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
 685                                  bss_conf->ssid, bss_conf->ssid_len);
 686
 687                 vif_priv->ssid.length = bss_conf->ssid_len;
 688                 memcpy(&vif_priv->ssid.ssid,
 689                        bss_conf->ssid,
 690                        bss_conf->ssid_len);
 691         }
 692
 693         if (changed & BSS_CHANGED_ASSOC) {
 694                 vif_priv->is_joining = false;
 695                 if (bss_conf->assoc) {
 696                         struct ieee80211_sta *sta;
 697                         struct wcn36xx_sta *sta_priv;
 698
 699                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 700                                     "mac assoc bss %pM vif %pM AID=%d\n",
 701                                      bss_conf->bssid,
 702                                      vif->addr,
 703                                      bss_conf->aid);
 704
 705                         vif_priv->sta_assoc = true;
 706                         rcu_read_lock();
 707                         sta = ieee80211_find_sta(vif, bss_conf->bssid);
 708                         if (!sta) {
 709                                 wcn36xx_err("sta %pM is not found\n",
 710                                               bss_conf->bssid);
 711                                 rcu_read_unlock();
 712                                 goto out;
 713                         }
 714                         sta_priv = wcn36xx_sta_to_priv(sta);
 715
 716                         wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 717
 718                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
 719                                 vif->addr,
 720                                 WCN36XX_HAL_LINK_POSTASSOC_STATE);
 721                         wcn36xx_smd_config_bss(wcn, vif, sta,
 722                                                bss_conf->bssid,
 723                                                true);
 724                         sta_priv->aid = bss_conf->aid;
 725                         /*
 726                          * config_sta must be called from  because this is the
 727                          * place where AID is available.
 728                          */
 729                         wcn36xx_smd_config_sta(wcn, vif, sta);
 730                         rcu_read_unlock();
 731                 } else {
 732                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 733                                     "disassociated bss %pM vif %pM AID=%d\n",
 734                                     bss_conf->bssid,
 735                                     vif->addr,
 736                                     bss_conf->aid);
 737                         vif_priv->sta_assoc = false;
 738                         wcn36xx_smd_set_link_st(wcn,
 739                                                 bss_conf->bssid,
 740                                                 vif->addr,
 741                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 742                 }
 743         }
 744
 745         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 746                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
 747                 skb = ieee80211_proberesp_get(hw, vif);
 748                 if (!skb) {
 749                         wcn36xx_err("failed to alloc probereq skb\n");
 750                         goto out;
 751                 }
 752
 753                 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
 754                 dev_kfree_skb(skb);
 755         }
 756
 757         if (changed & BSS_CHANGED_BEACON_ENABLED ||
 758             changed & BSS_CHANGED_BEACON) {
 759                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 760                             "mac bss changed beacon enabled %d\n",
 761                             bss_conf->enable_beacon);
 762
 763                 if (bss_conf->enable_beacon) {
 764                         vif_priv->dtim_period = bss_conf->dtim_period;
 765                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 766                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 767                                                vif->addr, false);
 768                         skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
 769                                                        &tim_len);
 770                         if (!skb) {
 771                                 wcn36xx_err("failed to alloc beacon skb\n");
 772                                 goto out;
 773                         }
 774                         wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
 775                         dev_kfree_skb(skb);
 776
 777                         if (vif->type == NL80211_IFTYPE_ADHOC ||
 778                             vif->type == NL80211_IFTYPE_MESH_POINT)
 779                                 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
 780                         else
 781                                 link_state = WCN36XX_HAL_LINK_AP_STATE;
 782
 783                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 784                                                 link_state);
 785                 } else {
 786                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 787                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 788                         wcn36xx_smd_delete_bss(wcn, vif);
 789                 }
 790         }
 791 out:
 792         return;
 793 }
 794
 795 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
 796 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 797 {
 798         struct wcn36xx *wcn = hw->priv;
 799         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
 800
 801         wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
 802         return 0;
 803 }
 804
 805 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
 806                                      struct ieee80211_vif *vif)
 807 {
 808         struct wcn36xx *wcn = hw->priv;
 809         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 810         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
 811
 812         list_del(&vif_priv->list);
 813         wcn36xx_smd_delete_sta_self(wcn, vif->addr);
 814 }
 815
 816 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
 817                                  struct ieee80211_vif *vif)
 818 {
 819         struct wcn36xx *wcn = hw->priv;
 820         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 821
 822         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
 823                     vif, vif->type);
 824
 825         if (!(NL80211_IFTYPE_STATION == vif->type ||
 826               NL80211_IFTYPE_AP == vif->type ||
 827               NL80211_IFTYPE_ADHOC == vif->type ||
 828               NL80211_IFTYPE_MESH_POINT == vif->type)) {
 829                 wcn36xx_warn("Unsupported interface type requested: %d\n",
 830                              vif->type);
 831                 return -EOPNOTSUPP;
 832         }
 833
 834         list_add(&vif_priv->list, &wcn->vif_list);
 835         wcn36xx_smd_add_sta_self(wcn, vif);
 836
 837         return 0;
 838 }
 839
 840 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 841                            struct ieee80211_sta *sta)
 842 {
 843         struct wcn36xx *wcn = hw->priv;
 844         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 845         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 846         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
 847                     vif, sta->addr);
 848
 849         spin_lock_init(&sta_priv->ampdu_lock);
 850         sta_priv->vif = vif_priv;
 851         /*
 852          * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
 853          * at this stage AID is not available yet.
 854          */
 855         if (NL80211_IFTYPE_STATION != vif->type) {
 856                 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 857                 sta_priv->aid = sta->aid;
 858                 wcn36xx_smd_config_sta(wcn, vif, sta);
 859         }
 860         return 0;
 861 }
 862
 863 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
 864                               struct ieee80211_vif *vif,
 865                               struct ieee80211_sta *sta)
 866 {
 867         struct wcn36xx *wcn = hw->priv;
 868         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 869
 870         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
 871                     vif, sta->addr, sta_priv->sta_index);
 872
 873         wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
 874         sta_priv->vif = NULL;
 875         return 0;
 876 }
 877
 878 #ifdef CONFIG_PM
 879
 880 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
 881 {
 882         struct wcn36xx *wcn = hw->priv;
 883
 884         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
 885
 886         flush_workqueue(wcn->hal_ind_wq);
 887         wcn36xx_smd_set_power_params(wcn, true);
 888         return 0;
 889 }
 890
 891 static int wcn36xx_resume(struct ieee80211_hw *hw)
 892 {
 893         struct wcn36xx *wcn = hw->priv;
 894
 895         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
 896
 897         flush_workqueue(wcn->hal_ind_wq);
 898         wcn36xx_smd_set_power_params(wcn, false);
 899         return 0;
 900 }
 901
 902 #endif
 903
 904 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
 905                     struct ieee80211_vif *vif,
 906                     enum ieee80211_ampdu_mlme_action action,
 907                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 908                     u8 buf_size, bool amsdu)
 909 {
 910         struct wcn36xx *wcn = hw->priv;
 911         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 912
 913         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
 914                     action, tid);
 915
 916         switch (action) {
 917         case IEEE80211_AMPDU_RX_START:
 918                 sta_priv->tid = tid;
 919                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
 920                         get_sta_index(vif, sta_priv));
 921                 wcn36xx_smd_add_ba(wcn);
 922                 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv));
 923                 break;
 924         case IEEE80211_AMPDU_RX_STOP:
 925                 wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
 926                 break;
 927         case IEEE80211_AMPDU_TX_START:
 928                 spin_lock_bh(&sta_priv->ampdu_lock);
 929                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
 930                 spin_unlock_bh(&sta_priv->ampdu_lock);
 931
 932                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 933                 break;
 934         case IEEE80211_AMPDU_TX_OPERATIONAL:
 935                 spin_lock_bh(&sta_priv->ampdu_lock);
 936                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
 937                 spin_unlock_bh(&sta_priv->ampdu_lock);
 938
 939                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
 940                         get_sta_index(vif, sta_priv));
 941                 break;
 942         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 943         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 944         case IEEE80211_AMPDU_TX_STOP_CONT:
 945                 spin_lock_bh(&sta_priv->ampdu_lock);
 946                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
 947                 spin_unlock_bh(&sta_priv->ampdu_lock);
 948
 949                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 950                 break;
 951         default:
 952                 wcn36xx_err("Unknown AMPDU action\n");
 953         }
 954
 955         return 0;
 956 }
 957
 958 static const struct ieee80211_ops wcn36xx_ops = {
 959         .start                  = wcn36xx_start,
 960         .stop                   = wcn36xx_stop,
 961         .add_interface          = wcn36xx_add_interface,
 962         .remove_interface       = wcn36xx_remove_interface,
 963 #ifdef CONFIG_PM
 964         .suspend                = wcn36xx_suspend,
 965         .resume                 = wcn36xx_resume,
 966 #endif
 967         .config                 = wcn36xx_config,
 968         .prepare_multicast      = wcn36xx_prepare_multicast,
 969         .configure_filter       = wcn36xx_configure_filter,
 970         .tx                     = wcn36xx_tx,
 971         .set_key                = wcn36xx_set_key,
 972         .sw_scan_start          = wcn36xx_sw_scan_start,
 973         .sw_scan_complete       = wcn36xx_sw_scan_complete,
 974         .bss_info_changed       = wcn36xx_bss_info_changed,
 975         .set_rts_threshold      = wcn36xx_set_rts_threshold,
 976         .sta_add                = wcn36xx_sta_add,
 977         .sta_remove             = wcn36xx_sta_remove,
 978         .ampdu_action           = wcn36xx_ampdu_action,
 979 };
 980
 981 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
 982 {
 983         int ret = 0;
 984
 985         static const u32 cipher_suites[] = {
 986                 WLAN_CIPHER_SUITE_WEP40,
 987                 WLAN_CIPHER_SUITE_WEP104,
 988                 WLAN_CIPHER_SUITE_TKIP,
 989                 WLAN_CIPHER_SUITE_CCMP,
 990         };
 991
 992         ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
 993         ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
 994         ieee80211_hw_set(wcn->hw, CONNECTION_MONITOR);
 995         ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
 996         ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
 997         ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
 998
 999         /* 3620 powersaving currently unstable */
1000         if (wcn->chip_version == WCN36XX_CHIP_3620)
1001                 __clear_bit(IEEE80211_HW_SUPPORTS_PS, wcn->hw->flags);
1002
1003         wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1004                 BIT(NL80211_IFTYPE_AP) |
1005                 BIT(NL80211_IFTYPE_ADHOC) |
1006                 BIT(NL80211_IFTYPE_MESH_POINT);
1007
1008         wcn->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wcn_band_2ghz;
1009         wcn->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wcn_band_5ghz;
1010
1011         wcn->hw->wiphy->cipher_suites = cipher_suites;
1012         wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1013
1014         wcn->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1015
1016         /* TODO: Figure out why this is necessary */
1017         wcn->hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
1018
1019 #ifdef CONFIG_PM
1020         wcn->hw->wiphy->wowlan = &wowlan_support;
1021 #endif
1022
1023         wcn->hw->max_listen_interval = 200;
1024
1025         wcn->hw->queues = 4;
1026
1027         SET_IEEE80211_DEV(wcn->hw, wcn->dev);
1028
1029         wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
1030         wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
1031
1032         return ret;
1033 }
1034
1035 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
1036                                           struct platform_device *pdev)
1037 {
1038         struct resource *res;
1039         /* Set TX IRQ */
1040         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
1041                                            "wcnss_wlantx_irq");
1042         if (!res) {
1043                 wcn36xx_err("failed to get tx_irq\n");
1044                 return -ENOENT;
1045         }
1046         wcn->tx_irq = res->start;
1047
1048         /* Set RX IRQ */
1049         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
1050                                            "wcnss_wlanrx_irq");
1051         if (!res) {
1052                 wcn36xx_err("failed to get rx_irq\n");
1053                 return -ENOENT;
1054         }
1055         wcn->rx_irq = res->start;
1056
1057         /* Map the memory */
1058         res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
1059                                                  "wcnss_mmio");
1060         if (!res) {
1061                 wcn36xx_err("failed to get mmio\n");
1062                 return -ENOENT;
1063         }
1064         wcn->mmio = ioremap(res->start, resource_size(res));
1065         if (!wcn->mmio) {
1066                 wcn36xx_err("failed to map io memory\n");
1067                 return -ENOMEM;
1068         }
1069         return 0;
1070 }
1071
1072 static int wcn36xx_probe(struct platform_device *pdev)
1073 {
1074         struct ieee80211_hw *hw;
1075         struct wcn36xx *wcn;
1076         int ret;
1077         u8 addr[ETH_ALEN];
1078
1079         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1080
1081         hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1082         if (!hw) {
1083                 wcn36xx_err("failed to alloc hw\n");
1084                 ret = -ENOMEM;
1085                 goto out_err;
1086         }
1087         platform_set_drvdata(pdev, hw);
1088         wcn = hw->priv;
1089         wcn->hw = hw;
1090         wcn->dev = &pdev->dev;
1091         wcn->dev->dma_mask = kzalloc(sizeof(*wcn->dev->dma_mask), GFP_KERNEL);
1092         if (!wcn->dev->dma_mask) {
1093                 ret = -ENOMEM;
1094                 goto dma_mask_err;
1095         }
1096         dma_set_mask_and_coherent(wcn->dev, DMA_BIT_MASK(32));
1097         wcn->wcn36xx_data = pdev->dev.platform_data;
1098         wcn->ctrl_ops = &wcn->wcn36xx_data->ctrl_ops;
1099         wcn->wcn36xx_data->wcn = wcn;
1100         if (!wcn->ctrl_ops->get_chip_type) {
1101                 dev_err(&pdev->dev, "Missing ops->get_chip_type\n");
1102                 ret = -EINVAL;
1103                 goto out_wq;
1104         }
1105         wcn->chip_version = wcn->ctrl_ops->get_chip_type(wcn);
1106
1107         mutex_init(&wcn->hal_mutex);
1108
1109         if (!wcn->ctrl_ops->get_hw_mac(wcn, addr)) {
1110                 wcn36xx_info("mac address: %pM\n", addr);
1111                 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1112         }
1113
1114         ret = wcn36xx_platform_get_resources(wcn, pdev);
1115         if (ret)
1116                 goto out_wq;
1117
1118         wcn36xx_init_ieee80211(wcn);
1119         ret = ieee80211_register_hw(wcn->hw);
1120         if (ret)
1121                 goto out_unmap;
1122
1123         return 0;
1124
1125 out_unmap:
1126         iounmap(wcn->mmio);
1127 out_wq:
1128         kfree(wcn->dev->dma_mask);
1129 dma_mask_err:
1130         ieee80211_free_hw(hw);
1131 out_err:
1132         return ret;
1133 }
1134 static int wcn36xx_remove(struct platform_device *pdev)
1135 {
1136         struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1137         struct wcn36xx *wcn = hw->priv;
1138         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1139
1140         release_firmware(wcn->nv);
1141         mutex_destroy(&wcn->hal_mutex);
1142
1143         ieee80211_unregister_hw(hw);
1144         iounmap(wcn->mmio);
1145         ieee80211_free_hw(hw);
1146
1147         return 0;
1148 }
1149 static const struct platform_device_id wcn36xx_platform_id_table[] = {
1150         {
1151                 .name = "wcn36xx",
1152                 .driver_data = 0
1153         },
1154         {}
1155 };
1156 MODULE_DEVICE_TABLE(platform, wcn36xx_platform_id_table);
1157
1158 static struct platform_driver wcn36xx_driver = {
1159         .probe      = wcn36xx_probe,
1160         .remove     = wcn36xx_remove,
1161         .driver         = {
1162                 .name   = "wcn36xx",
1163         },
1164         .id_table    = wcn36xx_platform_id_table,
1165 };
1166
1167 static int __init wcn36xx_init(void)
1168 {
1169         platform_driver_register(&wcn36xx_driver);
1170         return 0;
1171 }
1172 module_init(wcn36xx_init);
1173
1174 static void __exit wcn36xx_exit(void)
1175 {
1176         platform_driver_unregister(&wcn36xx_driver);
1177 }
1178 module_exit(wcn36xx_exit);
1179
1180 MODULE_LICENSE("Dual BSD/GPL");
1181 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1182 MODULE_FIRMWARE(WLAN_NV_FILE);