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 <linux/of.h>
  23 #include <linux/of_address.h>
  24 #include <linux/rpmsg.h>
  25 #include <linux/soc/qcom/smem_state.h>
  26 #include <linux/soc/qcom/wcnss_ctrl.h>
  27 #include <net/ipv6.h>
  28 #include "wcn36xx.h"
  29 #include "testmode.h"
  30 #include "firmware.h"
  31
  32 unsigned int wcn36xx_dbg_mask;
  33 module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644);
  34 MODULE_PARM_DESC(debug_mask, "Debugging mask");
  35
  36 #define CHAN2G(_freq, _idx) { \
  37         .band = NL80211_BAND_2GHZ, \
  38         .center_freq = (_freq), \
  39         .hw_value = (_idx), \
  40         .max_power = 25, \
  41 }
  42
  43 #define CHAN5G(_freq, _idx, _phy_val) { \
  44         .band = NL80211_BAND_5GHZ, \
  45         .center_freq = (_freq), \
  46         .hw_value = (_phy_val) << HW_VALUE_PHY_SHIFT | HW_VALUE_CHANNEL(_idx), \
  47         .max_power = 25, \
  48 }
  49
  50 /* The wcn firmware expects channel values to matching
  51  * their mnemonic values. So use these for .hw_value. */
  52 static struct ieee80211_channel wcn_2ghz_channels[] = {
  53         CHAN2G(2412, 1), /* Channel 1 */
  54         CHAN2G(2417, 2), /* Channel 2 */
  55         CHAN2G(2422, 3), /* Channel 3 */
  56         CHAN2G(2427, 4), /* Channel 4 */
  57         CHAN2G(2432, 5), /* Channel 5 */
  58         CHAN2G(2437, 6), /* Channel 6 */
  59         CHAN2G(2442, 7), /* Channel 7 */
  60         CHAN2G(2447, 8), /* Channel 8 */
  61         CHAN2G(2452, 9), /* Channel 9 */
  62         CHAN2G(2457, 10), /* Channel 10 */
  63         CHAN2G(2462, 11), /* Channel 11 */
  64         CHAN2G(2467, 12), /* Channel 12 */
  65         CHAN2G(2472, 13), /* Channel 13 */
  66         CHAN2G(2484, 14)  /* Channel 14 */
  67
  68 };
  69
  70 static struct ieee80211_channel wcn_5ghz_channels[] = {
  71         CHAN5G(5180, 36, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
  72         CHAN5G(5200, 40, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
  73         CHAN5G(5220, 44, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
  74         CHAN5G(5240, 48, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
  75         CHAN5G(5260, 52, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
  76         CHAN5G(5280, 56, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
  77         CHAN5G(5300, 60, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
  78         CHAN5G(5320, 64, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
  79         CHAN5G(5500, 100, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
  80         CHAN5G(5520, 104, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
  81         CHAN5G(5540, 108, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
  82         CHAN5G(5560, 112, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
  83         CHAN5G(5580, 116, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
  84         CHAN5G(5600, 120, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
  85         CHAN5G(5620, 124, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
  86         CHAN5G(5640, 128, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
  87         CHAN5G(5660, 132, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
  88         CHAN5G(5680, 136, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
  89         CHAN5G(5700, 140, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
  90         CHAN5G(5720, 144, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
  91         CHAN5G(5745, 149, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
  92         CHAN5G(5765, 153, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
  93         CHAN5G(5785, 157, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
  94         CHAN5G(5805, 161, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
  95         CHAN5G(5825, 165, 0)
  96 };
  97
  98 #define RATE(_bitrate, _hw_rate, _flags) { \
  99         .bitrate        = (_bitrate),                   \
 100         .flags          = (_flags),                     \
 101         .hw_value       = (_hw_rate),                   \
 102         .hw_value_short = (_hw_rate)  \
 103 }
 104
 105 static struct ieee80211_rate wcn_2ghz_rates[] = {
 106         RATE(10, HW_RATE_INDEX_1MBPS, 0),
 107         RATE(20, HW_RATE_INDEX_2MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
 108         RATE(55, HW_RATE_INDEX_5_5MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
 109         RATE(110, HW_RATE_INDEX_11MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
 110         RATE(60, HW_RATE_INDEX_6MBPS, 0),
 111         RATE(90, HW_RATE_INDEX_9MBPS, 0),
 112         RATE(120, HW_RATE_INDEX_12MBPS, 0),
 113         RATE(180, HW_RATE_INDEX_18MBPS, 0),
 114         RATE(240, HW_RATE_INDEX_24MBPS, 0),
 115         RATE(360, HW_RATE_INDEX_36MBPS, 0),
 116         RATE(480, HW_RATE_INDEX_48MBPS, 0),
 117         RATE(540, HW_RATE_INDEX_54MBPS, 0)
 118 };
 119
 120 static struct ieee80211_rate wcn_5ghz_rates[] = {
 121         RATE(60, HW_RATE_INDEX_6MBPS, 0),
 122         RATE(90, HW_RATE_INDEX_9MBPS, 0),
 123         RATE(120, HW_RATE_INDEX_12MBPS, 0),
 124         RATE(180, HW_RATE_INDEX_18MBPS, 0),
 125         RATE(240, HW_RATE_INDEX_24MBPS, 0),
 126         RATE(360, HW_RATE_INDEX_36MBPS, 0),
 127         RATE(480, HW_RATE_INDEX_48MBPS, 0),
 128         RATE(540, HW_RATE_INDEX_54MBPS, 0)
 129 };
 130
 131 static struct ieee80211_supported_band wcn_band_2ghz = {
 132         .channels       = wcn_2ghz_channels,
 133         .n_channels     = ARRAY_SIZE(wcn_2ghz_channels),
 134         .bitrates       = wcn_2ghz_rates,
 135         .n_bitrates     = ARRAY_SIZE(wcn_2ghz_rates),
 136         .ht_cap         = {
 137                 .cap =  IEEE80211_HT_CAP_GRN_FLD |
 138                         IEEE80211_HT_CAP_SGI_20 |
 139                         IEEE80211_HT_CAP_DSSSCCK40 |
 140                         IEEE80211_HT_CAP_LSIG_TXOP_PROT |
 141                         IEEE80211_HT_CAP_SGI_40 |
 142                         IEEE80211_HT_CAP_SUP_WIDTH_20_40,
 143                 .ht_supported = true,
 144                 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 145                 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
 146                 .mcs = {
 147                         .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
 148                         .rx_highest = cpu_to_le16(72),
 149                         .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
 150                 }
 151         }
 152 };
 153
 154 static struct ieee80211_supported_band wcn_band_5ghz = {
 155         .channels       = wcn_5ghz_channels,
 156         .n_channels     = ARRAY_SIZE(wcn_5ghz_channels),
 157         .bitrates       = wcn_5ghz_rates,
 158         .n_bitrates     = ARRAY_SIZE(wcn_5ghz_rates),
 159         .ht_cap         = {
 160                 .cap =  IEEE80211_HT_CAP_GRN_FLD |
 161                         IEEE80211_HT_CAP_SGI_20 |
 162                         IEEE80211_HT_CAP_DSSSCCK40 |
 163                         IEEE80211_HT_CAP_LSIG_TXOP_PROT |
 164                         IEEE80211_HT_CAP_SGI_40 |
 165                         IEEE80211_HT_CAP_SUP_WIDTH_20_40,
 166                 .ht_supported = true,
 167                 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 168                 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
 169                 .mcs = {
 170                         .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
 171                         .rx_highest = cpu_to_le16(150),
 172                         .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
 173                 }
 174         }
 175 };
 176
 177 #ifdef CONFIG_PM
 178
 179 static const struct wiphy_wowlan_support wowlan_support = {
 180         .flags = WIPHY_WOWLAN_ANY       |
 181                  WIPHY_WOWLAN_MAGIC_PKT |
 182                  WIPHY_WOWLAN_SUPPORTS_GTK_REKEY
 183 };
 184
 185 #endif
 186
 187 static inline u8 get_sta_index(struct ieee80211_vif *vif,
 188                                struct wcn36xx_sta *sta_priv)
 189 {
 190         return NL80211_IFTYPE_STATION == vif->type ?
 191                sta_priv->bss_sta_index :
 192                sta_priv->sta_index;
 193 }
 194
 195 static void wcn36xx_feat_caps_info(struct wcn36xx *wcn)
 196 {
 197         int i;
 198
 199         for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
 200                 if (wcn36xx_firmware_get_feat_caps(wcn->fw_feat_caps, i)) {
 201                         wcn36xx_dbg(WCN36XX_DBG_MAC, "FW Cap %s\n",
 202                                     wcn36xx_firmware_get_cap_name(i));
 203                 }
 204         }
 205 }
 206
 207 static int wcn36xx_start(struct ieee80211_hw *hw)
 208 {
 209         struct wcn36xx *wcn = hw->priv;
 210         int ret;
 211
 212         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
 213
 214         /* SMD initialization */
 215         ret = wcn36xx_smd_open(wcn);
 216         if (ret) {
 217                 wcn36xx_err("Failed to open smd channel: %d\n", ret);
 218                 goto out_err;
 219         }
 220
 221         /* Allocate memory pools for Mgmt BD headers and Data BD headers */
 222         ret = wcn36xx_dxe_allocate_mem_pools(wcn);
 223         if (ret) {
 224                 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret);
 225                 goto out_smd_close;
 226         }
 227
 228         ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
 229         if (ret) {
 230                 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
 231                 goto out_free_dxe_pool;
 232         }
 233
 234         ret = wcn36xx_smd_load_nv(wcn);
 235         if (ret) {
 236                 wcn36xx_err("Failed to push NV to chip\n");
 237                 goto out_free_dxe_ctl;
 238         }
 239
 240         ret = wcn36xx_smd_start(wcn);
 241         if (ret) {
 242                 wcn36xx_err("Failed to start chip\n");
 243                 goto out_free_dxe_ctl;
 244         }
 245
 246         if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
 247                 ret = wcn36xx_smd_feature_caps_exchange(wcn);
 248                 if (ret)
 249                         wcn36xx_warn("Exchange feature caps failed\n");
 250                 else
 251                         wcn36xx_feat_caps_info(wcn);
 252         }
 253
 254         /* DMA channel initialization */
 255         ret = wcn36xx_dxe_init(wcn);
 256         if (ret) {
 257                 wcn36xx_err("DXE init failed\n");
 258                 goto out_smd_stop;
 259         }
 260
 261         wcn36xx_debugfs_init(wcn);
 262
 263         INIT_LIST_HEAD(&wcn->vif_list);
 264         spin_lock_init(&wcn->dxe_lock);
 265         spin_lock_init(&wcn->survey_lock);
 266
 267         return 0;
 268
 269 out_smd_stop:
 270         wcn36xx_smd_stop(wcn);
 271 out_free_dxe_ctl:
 272         wcn36xx_dxe_free_ctl_blks(wcn);
 273 out_free_dxe_pool:
 274         wcn36xx_dxe_free_mem_pools(wcn);
 275 out_smd_close:
 276         wcn36xx_smd_close(wcn);
 277 out_err:
 278         return ret;
 279 }
 280
 281 static void wcn36xx_stop(struct ieee80211_hw *hw)
 282 {
 283         struct wcn36xx *wcn = hw->priv;
 284
 285         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
 286
 287         mutex_lock(&wcn->scan_lock);
 288         if (wcn->scan_req) {
 289                 struct cfg80211_scan_info scan_info = {
 290                         .aborted = true,
 291                 };
 292
 293                 ieee80211_scan_completed(wcn->hw, &scan_info);
 294         }
 295         wcn->scan_req = NULL;
 296         mutex_unlock(&wcn->scan_lock);
 297
 298         wcn36xx_debugfs_exit(wcn);
 299         wcn36xx_smd_stop(wcn);
 300         wcn36xx_dxe_deinit(wcn);
 301         wcn36xx_smd_close(wcn);
 302
 303         wcn36xx_dxe_free_mem_pools(wcn);
 304         wcn36xx_dxe_free_ctl_blks(wcn);
 305 }
 306
 307 static void wcn36xx_change_ps(struct wcn36xx *wcn, bool enable)
 308 {
 309         struct ieee80211_vif *vif = NULL;
 310         struct wcn36xx_vif *tmp;
 311
 312         list_for_each_entry(tmp, &wcn->vif_list, list) {
 313                 vif = wcn36xx_priv_to_vif(tmp);
 314                 if (enable && !wcn->sw_scan) {
 315                         if (vif->cfg.ps) /* ps allowed ? */
 316                                 wcn36xx_pmc_enter_bmps_state(wcn, vif);
 317                 } else {
 318                         wcn36xx_pmc_exit_bmps_state(wcn, vif);
 319                 }
 320         }
 321 }
 322
 323 static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch)
 324 {
 325         struct ieee80211_vif *vif = NULL;
 326         struct wcn36xx_vif *tmp;
 327         struct ieee80211_supported_band *band;
 328         struct ieee80211_channel *channel = NULL;
 329         unsigned long flags;
 330         int i, j;
 331
 332         for (i = 0; i < ARRAY_SIZE(wcn->hw->wiphy->bands); i++) {
 333                 band = wcn->hw->wiphy->bands[i];
 334                 if (!band)
 335                         break;
 336                 for (j = 0; j < band->n_channels; j++) {
 337                         if (HW_VALUE_CHANNEL(band->channels[j].hw_value) == ch) {
 338                                 channel = &band->channels[j];
 339                                 break;
 340                         }
 341                 }
 342                 if (channel)
 343                         break;
 344         }
 345
 346         if (!channel) {
 347                 wcn36xx_err("Cannot tune to channel %d\n", ch);
 348                 return;
 349         }
 350
 351         spin_lock_irqsave(&wcn->survey_lock, flags);
 352         wcn->band = band;
 353         wcn->channel = channel;
 354         spin_unlock_irqrestore(&wcn->survey_lock, flags);
 355
 356         list_for_each_entry(tmp, &wcn->vif_list, list) {
 357                 vif = wcn36xx_priv_to_vif(tmp);
 358                 wcn36xx_smd_switch_channel(wcn, vif, ch);
 359         }
 360
 361         return;
 362 }
 363
 364 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
 365 {
 366         struct wcn36xx *wcn = hw->priv;
 367         int ret;
 368
 369         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
 370
 371         mutex_lock(&wcn->conf_mutex);
 372
 373         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 374                 int ch = WCN36XX_HW_CHANNEL(wcn);
 375                 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
 376                             ch);
 377
 378                 if (wcn->sw_scan_opchannel == ch && wcn->sw_scan_channel) {
 379                         /* If channel is the initial operating channel, we may
 380                          * want to receive/transmit regular data packets, then
 381                          * simply stop the scan session and exit PS mode.
 382                          */
 383                         if (wcn->sw_scan_channel)
 384                                 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
 385                         if (wcn->sw_scan_init) {
 386                                 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
 387                                                         wcn->sw_scan_vif);
 388                         }
 389                 } else if (wcn->sw_scan) {
 390                         /* A scan is ongoing, do not change the operating
 391                          * channel, but start a scan session on the channel.
 392                          */
 393                         if (wcn->sw_scan_channel)
 394                                 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
 395                         if (!wcn->sw_scan_init) {
 396                                 /* This can fail if we are unable to notify the
 397                                  * operating channel.
 398                                  */
 399                                 ret = wcn36xx_smd_init_scan(wcn,
 400                                                             HAL_SYS_MODE_SCAN,
 401                                                             wcn->sw_scan_vif);
 402                                 if (ret) {
 403                                         mutex_unlock(&wcn->conf_mutex);
 404                                         return -EIO;
 405                                 }
 406                         }
 407                         wcn36xx_smd_start_scan(wcn, ch);
 408                 } else {
 409                         wcn36xx_change_opchannel(wcn, ch);
 410                 }
 411         }
 412
 413         if (changed & IEEE80211_CONF_CHANGE_PS)
 414                 wcn36xx_change_ps(wcn, hw->conf.flags & IEEE80211_CONF_PS);
 415
 416         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
 417                 if (hw->conf.flags & IEEE80211_CONF_IDLE)
 418                         wcn36xx_smd_enter_imps(wcn);
 419                 else
 420                         wcn36xx_smd_exit_imps(wcn);
 421         }
 422
 423         mutex_unlock(&wcn->conf_mutex);
 424
 425         return 0;
 426 }
 427
 428 static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
 429                                      unsigned int changed,
 430                                      unsigned int *total, u64 multicast)
 431 {
 432         struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
 433         struct wcn36xx *wcn = hw->priv;
 434         struct wcn36xx_vif *tmp;
 435         struct ieee80211_vif *vif = NULL;
 436
 437         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
 438
 439         mutex_lock(&wcn->conf_mutex);
 440
 441         *total &= FIF_ALLMULTI;
 442
 443         fp = (void *)(unsigned long)multicast;
 444         list_for_each_entry(tmp, &wcn->vif_list, list) {
 445                 vif = wcn36xx_priv_to_vif(tmp);
 446
 447                 /* FW handles MC filtering only when connected as STA */
 448                 if (*total & FIF_ALLMULTI)
 449                         wcn36xx_smd_set_mc_list(wcn, vif, NULL);
 450                 else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc)
 451                         wcn36xx_smd_set_mc_list(wcn, vif, fp);
 452         }
 453
 454         mutex_unlock(&wcn->conf_mutex);
 455         kfree(fp);
 456 }
 457
 458 static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw,
 459                                      struct netdev_hw_addr_list *mc_list)
 460 {
 461         struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
 462         struct netdev_hw_addr *ha;
 463
 464         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n");
 465         fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
 466         if (!fp) {
 467                 wcn36xx_err("Out of memory setting filters.\n");
 468                 return 0;
 469         }
 470
 471         fp->mc_addr_count = 0;
 472         /* update multicast filtering parameters */
 473         if (netdev_hw_addr_list_count(mc_list) <=
 474             WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) {
 475                 netdev_hw_addr_list_for_each(ha, mc_list) {
 476                         memcpy(fp->mc_addr[fp->mc_addr_count],
 477                                         ha->addr, ETH_ALEN);
 478                         fp->mc_addr_count++;
 479                 }
 480         }
 481
 482         return (u64)(unsigned long)fp;
 483 }
 484
 485 static void wcn36xx_tx(struct ieee80211_hw *hw,
 486                        struct ieee80211_tx_control *control,
 487                        struct sk_buff *skb)
 488 {
 489         struct wcn36xx *wcn = hw->priv;
 490         struct wcn36xx_sta *sta_priv = NULL;
 491
 492         if (control->sta)
 493                 sta_priv = wcn36xx_sta_to_priv(control->sta);
 494
 495         if (wcn36xx_start_tx(wcn, sta_priv, skb))
 496                 ieee80211_free_txskb(wcn->hw, skb);
 497 }
 498
 499 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 500                            struct ieee80211_vif *vif,
 501                            struct ieee80211_sta *sta,
 502                            struct ieee80211_key_conf *key_conf)
 503 {
 504         struct wcn36xx *wcn = hw->priv;
 505         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 506         struct wcn36xx_sta *sta_priv = sta ? wcn36xx_sta_to_priv(sta) : NULL;
 507         int ret = 0;
 508         u8 key[WLAN_MAX_KEY_LEN];
 509
 510         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
 511         wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
 512                     cmd, key_conf->cipher, key_conf->keyidx,
 513                     key_conf->keylen, key_conf->flags);
 514         wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
 515                          key_conf->key,
 516                          key_conf->keylen);
 517
 518         mutex_lock(&wcn->conf_mutex);
 519
 520         switch (key_conf->cipher) {
 521         case WLAN_CIPHER_SUITE_WEP40:
 522                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 523                 break;
 524         case WLAN_CIPHER_SUITE_WEP104:
 525                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP104;
 526                 break;
 527         case WLAN_CIPHER_SUITE_CCMP:
 528                 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
 529                 break;
 530         case WLAN_CIPHER_SUITE_TKIP:
 531                 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
 532                 break;
 533         default:
 534                 wcn36xx_err("Unsupported key type 0x%x\n",
 535                               key_conf->cipher);
 536                 ret = -EOPNOTSUPP;
 537                 goto out;
 538         }
 539
 540         switch (cmd) {
 541         case SET_KEY:
 542                 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
 543                         /*
 544                          * Supplicant is sending key in the wrong order:
 545                          * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
 546                          * but HW expects it to be in the order as described in
 547                          * IEEE 802.11 spec (see chapter 11.7) like this:
 548                          * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
 549                          */
 550                         memcpy(key, key_conf->key, 16);
 551                         memcpy(key + 16, key_conf->key + 24, 8);
 552                         memcpy(key + 24, key_conf->key + 16, 8);
 553                 } else {
 554                         memcpy(key, key_conf->key, key_conf->keylen);
 555                 }
 556
 557                 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
 558                         sta_priv->is_data_encrypted = true;
 559                         /* Reconfigure bss with encrypt_type */
 560                         if (NL80211_IFTYPE_STATION == vif->type) {
 561                                 wcn36xx_smd_config_bss(wcn,
 562                                                        vif,
 563                                                        sta,
 564                                                        sta->addr,
 565                                                        true);
 566                                 wcn36xx_smd_config_sta(wcn, vif, sta);
 567                         }
 568
 569                         wcn36xx_smd_set_stakey(wcn,
 570                                 vif_priv->encrypt_type,
 571                                 key_conf->keyidx,
 572                                 key_conf->keylen,
 573                                 key,
 574                                 get_sta_index(vif, sta_priv));
 575                 } else {
 576                         wcn36xx_smd_set_bsskey(wcn,
 577                                 vif_priv->encrypt_type,
 578                                 vif_priv->bss_index,
 579                                 key_conf->keyidx,
 580                                 key_conf->keylen,
 581                                 key);
 582
 583                         if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
 584                             (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
 585                                 list_for_each_entry(sta_priv,
 586                                                     &vif_priv->sta_list, list) {
 587                                         sta_priv->is_data_encrypted = true;
 588                                         wcn36xx_smd_set_stakey(wcn,
 589                                                 vif_priv->encrypt_type,
 590                                                 key_conf->keyidx,
 591                                                 key_conf->keylen,
 592                                                 key,
 593                                                 get_sta_index(vif, sta_priv));
 594                                 }
 595                         }
 596                 }
 597                 break;
 598         case DISABLE_KEY:
 599                 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
 600                         if (vif_priv->bss_index != WCN36XX_HAL_BSS_INVALID_IDX)
 601                                 wcn36xx_smd_remove_bsskey(wcn,
 602                                         vif_priv->encrypt_type,
 603                                         vif_priv->bss_index,
 604                                         key_conf->keyidx);
 605
 606                         vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 607                 } else {
 608                         sta_priv->is_data_encrypted = false;
 609                         /* do not remove key if disassociated */
 610                         if (sta_priv->aid)
 611                                 wcn36xx_smd_remove_stakey(wcn,
 612                                         vif_priv->encrypt_type,
 613                                         key_conf->keyidx,
 614                                         get_sta_index(vif, sta_priv));
 615                 }
 616                 break;
 617         default:
 618                 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
 619                 ret = -EOPNOTSUPP;
 620                 goto out;
 621         }
 622
 623 out:
 624         mutex_unlock(&wcn->conf_mutex);
 625
 626         return ret;
 627 }
 628
 629 static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
 630                            struct ieee80211_vif *vif,
 631                            struct ieee80211_scan_request *hw_req)
 632 {
 633         struct wcn36xx *wcn = hw->priv;
 634
 635         if (!wcn36xx_firmware_get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
 636                 /* fallback to mac80211 software scan */
 637                 return 1;
 638         }
 639
 640         /* Firmware scan offload is limited to 48 channels, fallback to
 641          * software driven scanning otherwise.
 642          */
 643         if (hw_req->req.n_channels > 48) {
 644                 wcn36xx_warn("Offload scan aborted, n_channels=%u",
 645                              hw_req->req.n_channels);
 646                 return 1;
 647         }
 648
 649         mutex_lock(&wcn->scan_lock);
 650         if (wcn->scan_req) {
 651                 mutex_unlock(&wcn->scan_lock);
 652                 return -EBUSY;
 653         }
 654
 655         wcn->scan_aborted = false;
 656         wcn->scan_req = &hw_req->req;
 657
 658         mutex_unlock(&wcn->scan_lock);
 659
 660         wcn36xx_smd_update_channel_list(wcn, &hw_req->req);
 661         return wcn36xx_smd_start_hw_scan(wcn, vif, &hw_req->req);
 662 }
 663
 664 static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw,
 665                                    struct ieee80211_vif *vif)
 666 {
 667         struct wcn36xx *wcn = hw->priv;
 668
 669         mutex_lock(&wcn->scan_lock);
 670         wcn->scan_aborted = true;
 671         mutex_unlock(&wcn->scan_lock);
 672
 673         if (wcn36xx_firmware_get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
 674                 /* ieee80211_scan_completed will be called on FW scan
 675                  * indication */
 676                 wcn36xx_smd_stop_hw_scan(wcn);
 677         }
 678 }
 679
 680 static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
 681                                   struct ieee80211_vif *vif,
 682                                   const u8 *mac_addr)
 683 {
 684         struct wcn36xx *wcn = hw->priv;
 685         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 686
 687         wcn36xx_dbg(WCN36XX_DBG_MAC, "sw_scan_start");
 688
 689         wcn->sw_scan = true;
 690         wcn->sw_scan_vif = vif;
 691         wcn->sw_scan_channel = 0;
 692         if (vif_priv->sta_assoc)
 693                 wcn->sw_scan_opchannel = WCN36XX_HW_CHANNEL(wcn);
 694         else
 695                 wcn->sw_scan_opchannel = 0;
 696 }
 697
 698 static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
 699                                      struct ieee80211_vif *vif)
 700 {
 701         struct wcn36xx *wcn = hw->priv;
 702
 703         wcn36xx_dbg(WCN36XX_DBG_MAC, "sw_scan_complete");
 704
 705         /* ensure that any scan session is finished */
 706         if (wcn->sw_scan_channel)
 707                 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
 708         if (wcn->sw_scan_init) {
 709                 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
 710                                         wcn->sw_scan_vif);
 711         }
 712         wcn->sw_scan = false;
 713         wcn->sw_scan_opchannel = 0;
 714 }
 715
 716 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
 717                                          enum nl80211_band band)
 718 {
 719         int i, size;
 720         u16 *rates_table;
 721         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 722         u32 rates = sta->deflink.supp_rates[band];
 723
 724         memset(&sta_priv->supported_rates, 0,
 725                 sizeof(sta_priv->supported_rates));
 726         sta_priv->supported_rates.op_rate_mode = STA_11n;
 727
 728         size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
 729         rates_table = sta_priv->supported_rates.dsss_rates;
 730         if (band == NL80211_BAND_2GHZ) {
 731                 for (i = 0; i < size; i++) {
 732                         if (rates & 0x01) {
 733                                 rates_table[i] = wcn_2ghz_rates[i].hw_value;
 734                                 rates = rates >> 1;
 735                         }
 736                 }
 737         }
 738
 739         size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
 740         rates_table = sta_priv->supported_rates.ofdm_rates;
 741         for (i = 0; i < size; i++) {
 742                 if (rates & 0x01) {
 743                         rates_table[i] = wcn_5ghz_rates[i].hw_value;
 744                         rates = rates >> 1;
 745                 }
 746         }
 747
 748         if (sta->deflink.ht_cap.ht_supported) {
 749                 BUILD_BUG_ON(sizeof(sta->deflink.ht_cap.mcs.rx_mask) >
 750                              sizeof(sta_priv->supported_rates.supported_mcs_set));
 751                 memcpy(sta_priv->supported_rates.supported_mcs_set,
 752                        sta->deflink.ht_cap.mcs.rx_mask,
 753                        sizeof(sta->deflink.ht_cap.mcs.rx_mask));
 754         }
 755
 756         if (sta->deflink.vht_cap.vht_supported) {
 757                 sta_priv->supported_rates.op_rate_mode = STA_11ac;
 758                 sta_priv->supported_rates.vht_rx_mcs_map =
 759                                 sta->deflink.vht_cap.vht_mcs.rx_mcs_map;
 760                 sta_priv->supported_rates.vht_tx_mcs_map =
 761                                 sta->deflink.vht_cap.vht_mcs.tx_mcs_map;
 762         }
 763 }
 764
 765 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
 766 {
 767         u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
 768                 HW_RATE_INDEX_6MBPS,
 769                 HW_RATE_INDEX_9MBPS,
 770                 HW_RATE_INDEX_12MBPS,
 771                 HW_RATE_INDEX_18MBPS,
 772                 HW_RATE_INDEX_24MBPS,
 773                 HW_RATE_INDEX_36MBPS,
 774                 HW_RATE_INDEX_48MBPS,
 775                 HW_RATE_INDEX_54MBPS
 776         };
 777         u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
 778                 HW_RATE_INDEX_1MBPS,
 779                 HW_RATE_INDEX_2MBPS,
 780                 HW_RATE_INDEX_5_5MBPS,
 781                 HW_RATE_INDEX_11MBPS
 782         };
 783
 784         rates->op_rate_mode = STA_11n;
 785         memcpy(rates->dsss_rates, dsss_rates,
 786                 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
 787         memcpy(rates->ofdm_rates, ofdm_rates,
 788                 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
 789         rates->supported_mcs_set[0] = 0xFF;
 790 }
 791
 792 void wcn36xx_set_default_rates_v1(struct wcn36xx_hal_supported_rates_v1 *rates)
 793 {
 794         rates->op_rate_mode = STA_11ac;
 795         rates->vht_rx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9;
 796         rates->vht_tx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9;
 797 }
 798
 799 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
 800                                      struct ieee80211_vif *vif,
 801                                      struct ieee80211_bss_conf *bss_conf,
 802                                      u64 changed)
 803 {
 804         struct wcn36xx *wcn = hw->priv;
 805         struct sk_buff *skb = NULL;
 806         u16 tim_off, tim_len;
 807         enum wcn36xx_hal_link_state link_state;
 808         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 809
 810         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%llx\n",
 811                     vif, changed);
 812
 813         mutex_lock(&wcn->conf_mutex);
 814
 815         if (changed & BSS_CHANGED_BEACON_INFO) {
 816                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 817                             "mac bss changed dtim period %d\n",
 818                             bss_conf->dtim_period);
 819
 820                 vif_priv->dtim_period = bss_conf->dtim_period;
 821         }
 822
 823         if (changed & BSS_CHANGED_BSSID) {
 824                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
 825                             bss_conf->bssid);
 826
 827                 if (!is_zero_ether_addr(bss_conf->bssid)) {
 828                         vif_priv->is_joining = true;
 829                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 830                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
 831                                                 WCN36XX_HAL_LINK_PREASSOC_STATE);
 832                         wcn36xx_smd_join(wcn, bss_conf->bssid,
 833                                          vif->addr, WCN36XX_HW_CHANNEL(wcn));
 834                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 835                                                bss_conf->bssid, false);
 836                 } else {
 837                         vif_priv->is_joining = false;
 838                         wcn36xx_smd_delete_bss(wcn, vif);
 839                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
 840                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 841                         vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 842                 }
 843         }
 844
 845         if (changed & BSS_CHANGED_SSID) {
 846                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 847                             "mac bss changed ssid\n");
 848                 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
 849                                  vif->cfg.ssid, vif->cfg.ssid_len);
 850
 851                 vif_priv->ssid.length = vif->cfg.ssid_len;
 852                 memcpy(&vif_priv->ssid.ssid,
 853                        vif->cfg.ssid,
 854                        vif->cfg.ssid_len);
 855         }
 856
 857         if (changed & BSS_CHANGED_ASSOC) {
 858                 vif_priv->is_joining = false;
 859                 if (vif->cfg.assoc) {
 860                         struct ieee80211_sta *sta;
 861                         struct wcn36xx_sta *sta_priv;
 862
 863                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 864                                     "mac assoc bss %pM vif %pM AID=%d\n",
 865                                      bss_conf->bssid,
 866                                      vif->addr,
 867                                      vif->cfg.aid);
 868
 869                         vif_priv->sta_assoc = true;
 870
 871                         /*
 872                          * Holding conf_mutex ensures mutal exclusion with
 873                          * wcn36xx_sta_remove() and as such ensures that sta
 874                          * won't be freed while we're operating on it. As such
 875                          * we do not need to hold the rcu_read_lock().
 876                          */
 877                         sta = ieee80211_find_sta(vif, bss_conf->bssid);
 878                         if (!sta) {
 879                                 wcn36xx_err("sta %pM is not found\n",
 880                                               bss_conf->bssid);
 881                                 goto out;
 882                         }
 883                         sta_priv = wcn36xx_sta_to_priv(sta);
 884
 885                         wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 886
 887                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
 888                                 vif->addr,
 889                                 WCN36XX_HAL_LINK_POSTASSOC_STATE);
 890                         wcn36xx_smd_config_bss(wcn, vif, sta,
 891                                                bss_conf->bssid,
 892                                                true);
 893                         sta_priv->aid = vif->cfg.aid;
 894                         /*
 895                          * config_sta must be called from  because this is the
 896                          * place where AID is available.
 897                          */
 898                         wcn36xx_smd_config_sta(wcn, vif, sta);
 899                         if (vif->type == NL80211_IFTYPE_STATION)
 900                                 wcn36xx_smd_add_beacon_filter(wcn, vif);
 901                         wcn36xx_enable_keep_alive_null_packet(wcn, vif);
 902                 } else {
 903                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 904                                     "disassociated bss %pM vif %pM AID=%d\n",
 905                                     bss_conf->bssid,
 906                                     vif->addr,
 907                                     vif->cfg.aid);
 908                         vif_priv->sta_assoc = false;
 909                         wcn36xx_smd_set_link_st(wcn,
 910                                                 bss_conf->bssid,
 911                                                 vif->addr,
 912                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 913                 }
 914         }
 915
 916         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 917                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
 918                 skb = ieee80211_proberesp_get(hw, vif);
 919                 if (!skb) {
 920                         wcn36xx_err("failed to alloc probereq skb\n");
 921                         goto out;
 922                 }
 923
 924                 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
 925                 dev_kfree_skb(skb);
 926         }
 927
 928         if (changed & BSS_CHANGED_BEACON_ENABLED ||
 929             changed & BSS_CHANGED_BEACON) {
 930                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 931                             "mac bss changed beacon enabled %d\n",
 932                             bss_conf->enable_beacon);
 933
 934                 if (bss_conf->enable_beacon) {
 935                         vif_priv->dtim_period = bss_conf->dtim_period;
 936                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 937                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 938                                                vif->addr, false);
 939                         skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
 940                                                        &tim_len, 0);
 941                         if (!skb) {
 942                                 wcn36xx_err("failed to alloc beacon skb\n");
 943                                 goto out;
 944                         }
 945                         wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
 946                         dev_kfree_skb(skb);
 947
 948                         if (vif->type == NL80211_IFTYPE_ADHOC ||
 949                             vif->type == NL80211_IFTYPE_MESH_POINT)
 950                                 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
 951                         else
 952                                 link_state = WCN36XX_HAL_LINK_AP_STATE;
 953
 954                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 955                                                 link_state);
 956                 } else {
 957                         wcn36xx_smd_delete_bss(wcn, vif);
 958                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 959                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 960                 }
 961         }
 962 out:
 963
 964         mutex_unlock(&wcn->conf_mutex);
 965 }
 966
 967 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
 968 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 969 {
 970         struct wcn36xx *wcn = hw->priv;
 971         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
 972
 973         mutex_lock(&wcn->conf_mutex);
 974         wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
 975         mutex_unlock(&wcn->conf_mutex);
 976
 977         return 0;
 978 }
 979
 980 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
 981                                      struct ieee80211_vif *vif)
 982 {
 983         struct wcn36xx *wcn = hw->priv;
 984         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 985         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
 986
 987         mutex_lock(&wcn->conf_mutex);
 988
 989         list_del(&vif_priv->list);
 990         wcn36xx_smd_delete_sta_self(wcn, vif->addr);
 991
 992         mutex_unlock(&wcn->conf_mutex);
 993 }
 994
 995 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
 996                                  struct ieee80211_vif *vif)
 997 {
 998         struct wcn36xx *wcn = hw->priv;
 999         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1000
1001         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
1002                     vif, vif->type);
1003
1004         if (!(NL80211_IFTYPE_STATION == vif->type ||
1005               NL80211_IFTYPE_AP == vif->type ||
1006               NL80211_IFTYPE_ADHOC == vif->type ||
1007               NL80211_IFTYPE_MESH_POINT == vif->type)) {
1008                 wcn36xx_warn("Unsupported interface type requested: %d\n",
1009                              vif->type);
1010                 return -EOPNOTSUPP;
1011         }
1012
1013         mutex_lock(&wcn->conf_mutex);
1014
1015         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
1016         INIT_LIST_HEAD(&vif_priv->sta_list);
1017         list_add(&vif_priv->list, &wcn->vif_list);
1018         wcn36xx_smd_add_sta_self(wcn, vif);
1019
1020         mutex_unlock(&wcn->conf_mutex);
1021
1022         return 0;
1023 }
1024
1025 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1026                            struct ieee80211_sta *sta)
1027 {
1028         struct wcn36xx *wcn = hw->priv;
1029         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1030         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1031         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
1032                     vif, sta->addr);
1033
1034         mutex_lock(&wcn->conf_mutex);
1035
1036         spin_lock_init(&sta_priv->ampdu_lock);
1037         sta_priv->vif = vif_priv;
1038         list_add(&sta_priv->list, &vif_priv->sta_list);
1039
1040         /*
1041          * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
1042          * at this stage AID is not available yet.
1043          */
1044         if (NL80211_IFTYPE_STATION != vif->type) {
1045                 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
1046                 sta_priv->aid = sta->aid;
1047                 wcn36xx_smd_config_sta(wcn, vif, sta);
1048         }
1049
1050         mutex_unlock(&wcn->conf_mutex);
1051
1052         return 0;
1053 }
1054
1055 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
1056                               struct ieee80211_vif *vif,
1057                               struct ieee80211_sta *sta)
1058 {
1059         struct wcn36xx *wcn = hw->priv;
1060         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1061
1062         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
1063                     vif, sta->addr, sta_priv->sta_index);
1064
1065         mutex_lock(&wcn->conf_mutex);
1066
1067         list_del(&sta_priv->list);
1068         wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
1069         sta_priv->vif = NULL;
1070
1071         mutex_unlock(&wcn->conf_mutex);
1072
1073         return 0;
1074 }
1075
1076 #ifdef CONFIG_PM
1077
1078 static struct ieee80211_vif *wcn36xx_get_first_assoc_vif(struct wcn36xx *wcn)
1079 {
1080         struct wcn36xx_vif *vif_priv = NULL;
1081         struct ieee80211_vif *vif = NULL;
1082
1083         list_for_each_entry(vif_priv, &wcn->vif_list, list) {
1084                 if (vif_priv->sta_assoc) {
1085                         vif = wcn36xx_priv_to_vif(vif_priv);
1086                         break;
1087                 }
1088         }
1089         return vif;
1090 }
1091
1092 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
1093 {
1094         struct wcn36xx *wcn = hw->priv;
1095         struct ieee80211_vif *vif = NULL;
1096         int ret = 0;
1097
1098         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
1099
1100         mutex_lock(&wcn->conf_mutex);
1101
1102         vif = wcn36xx_get_first_assoc_vif(wcn);
1103         if (vif) {
1104                 ret = wcn36xx_smd_arp_offload(wcn, vif, true);
1105                 if (ret)
1106                         goto out;
1107                 ret = wcn36xx_smd_ipv6_ns_offload(wcn, vif, true);
1108                 if (ret)
1109                         goto out;
1110                 ret = wcn36xx_smd_gtk_offload(wcn, vif, true);
1111                 if (ret)
1112                         goto out;
1113                 ret = wcn36xx_smd_set_power_params(wcn, true);
1114                 if (ret)
1115                         goto out;
1116                 ret = wcn36xx_smd_wlan_host_suspend_ind(wcn);
1117         }
1118
1119         /* Disable IRQ, we don't want to handle any packet before mac80211 is
1120          * resumed and ready to receive packets.
1121          */
1122         disable_irq(wcn->tx_irq);
1123         disable_irq(wcn->rx_irq);
1124
1125 out:
1126         mutex_unlock(&wcn->conf_mutex);
1127         return ret;
1128 }
1129
1130 static int wcn36xx_resume(struct ieee80211_hw *hw)
1131 {
1132         struct wcn36xx *wcn = hw->priv;
1133         struct ieee80211_vif *vif = NULL;
1134
1135         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
1136
1137         mutex_lock(&wcn->conf_mutex);
1138         vif = wcn36xx_get_first_assoc_vif(wcn);
1139         if (vif) {
1140                 wcn36xx_smd_host_resume(wcn);
1141                 wcn36xx_smd_set_power_params(wcn, false);
1142                 wcn36xx_smd_gtk_offload_get_info(wcn, vif);
1143                 wcn36xx_smd_gtk_offload(wcn, vif, false);
1144                 wcn36xx_smd_ipv6_ns_offload(wcn, vif, false);
1145                 wcn36xx_smd_arp_offload(wcn, vif, false);
1146         }
1147
1148         enable_irq(wcn->tx_irq);
1149         enable_irq(wcn->rx_irq);
1150
1151         mutex_unlock(&wcn->conf_mutex);
1152
1153         return 0;
1154 }
1155
1156 static void wcn36xx_set_rekey_data(struct ieee80211_hw *hw,
1157                                    struct ieee80211_vif *vif,
1158                                    struct cfg80211_gtk_rekey_data *data)
1159 {
1160         struct wcn36xx *wcn = hw->priv;
1161         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1162
1163         mutex_lock(&wcn->conf_mutex);
1164
1165         memcpy(vif_priv->rekey_data.kek, data->kek, NL80211_KEK_LEN);
1166         memcpy(vif_priv->rekey_data.kck, data->kck, NL80211_KCK_LEN);
1167         vif_priv->rekey_data.replay_ctr =
1168                 cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr));
1169         vif_priv->rekey_data.valid = true;
1170
1171         mutex_unlock(&wcn->conf_mutex);
1172 }
1173
1174 #endif
1175
1176 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
1177                     struct ieee80211_vif *vif,
1178                     struct ieee80211_ampdu_params *params)
1179 {
1180         struct wcn36xx *wcn = hw->priv;
1181         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta);
1182         struct ieee80211_sta *sta = params->sta;
1183         enum ieee80211_ampdu_mlme_action action = params->action;
1184         u16 tid = params->tid;
1185         u16 *ssn = &params->ssn;
1186         int ret = 0;
1187         int session;
1188
1189         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
1190                     action, tid);
1191
1192         mutex_lock(&wcn->conf_mutex);
1193
1194         switch (action) {
1195         case IEEE80211_AMPDU_RX_START:
1196                 sta_priv->tid = tid;
1197                 session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
1198                                                      get_sta_index(vif, sta_priv));
1199                 if (session < 0) {
1200                         ret = session;
1201                         goto out;
1202                 }
1203                 wcn36xx_smd_add_ba(wcn, session);
1204                 break;
1205         case IEEE80211_AMPDU_RX_STOP:
1206                 wcn36xx_smd_del_ba(wcn, tid, 0, get_sta_index(vif, sta_priv));
1207                 break;
1208         case IEEE80211_AMPDU_TX_START:
1209                 spin_lock_bh(&sta_priv->ampdu_lock);
1210                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
1211                 spin_unlock_bh(&sta_priv->ampdu_lock);
1212
1213                 /* Replace the mac80211 ssn with the firmware one */
1214                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu ssn = %u\n", *ssn);
1215                 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv), tid, ssn);
1216                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu fw-ssn = %u\n", *ssn);
1217
1218                 /* Start BA session */
1219                 session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
1220                                                      get_sta_index(vif, sta_priv));
1221                 if (session < 0) {
1222                         ret = session;
1223                         goto out;
1224                 }
1225                 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
1226                 break;
1227         case IEEE80211_AMPDU_TX_OPERATIONAL:
1228                 spin_lock_bh(&sta_priv->ampdu_lock);
1229                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
1230                 spin_unlock_bh(&sta_priv->ampdu_lock);
1231
1232                 break;
1233         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1234         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1235         case IEEE80211_AMPDU_TX_STOP_CONT:
1236                 spin_lock_bh(&sta_priv->ampdu_lock);
1237                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
1238                 spin_unlock_bh(&sta_priv->ampdu_lock);
1239
1240                 wcn36xx_smd_del_ba(wcn, tid, 1, get_sta_index(vif, sta_priv));
1241                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1242                 break;
1243         default:
1244                 wcn36xx_err("Unknown AMPDU action\n");
1245         }
1246
1247 out:
1248         mutex_unlock(&wcn->conf_mutex);
1249
1250         return ret;
1251 }
1252
1253 #if IS_ENABLED(CONFIG_IPV6)
1254 static void wcn36xx_ipv6_addr_change(struct ieee80211_hw *hw,
1255                                      struct ieee80211_vif *vif,
1256                                      struct inet6_dev *idev)
1257 {
1258         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1259         struct inet6_ifaddr *ifa;
1260         int idx = 0;
1261
1262         memset(vif_priv->tentative_addrs, 0, sizeof(vif_priv->tentative_addrs));
1263
1264         read_lock_bh(&idev->lock);
1265         list_for_each_entry(ifa, &idev->addr_list, if_list) {
1266                 vif_priv->target_ipv6_addrs[idx] = ifa->addr;
1267                 if (ifa->flags & IFA_F_TENTATIVE)
1268                         __set_bit(idx, vif_priv->tentative_addrs);
1269                 idx++;
1270                 if (idx >= WCN36XX_HAL_IPV6_OFFLOAD_ADDR_MAX)
1271                         break;
1272                 wcn36xx_dbg(WCN36XX_DBG_MAC, "%pI6 %s\n", &ifa->addr,
1273                             (ifa->flags & IFA_F_TENTATIVE) ? "tentative" : NULL);
1274         }
1275         read_unlock_bh(&idev->lock);
1276
1277         vif_priv->num_target_ipv6_addrs = idx;
1278 }
1279 #endif
1280
1281 static void wcn36xx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1282                           u32 queues, bool drop)
1283 {
1284         struct wcn36xx *wcn = hw->priv;
1285
1286         if (wcn36xx_dxe_tx_flush(wcn)) {
1287                 wcn36xx_err("Failed to flush hardware tx queues\n");
1288         }
1289 }
1290
1291 static int wcn36xx_get_survey(struct ieee80211_hw *hw, int idx,
1292                               struct survey_info *survey)
1293 {
1294         struct wcn36xx *wcn = hw->priv;
1295         struct ieee80211_supported_band *sband;
1296         struct wcn36xx_chan_survey *chan_survey;
1297         int band_idx;
1298         unsigned long flags;
1299
1300         sband = wcn->hw->wiphy->bands[NL80211_BAND_2GHZ];
1301         band_idx = idx;
1302         if (band_idx >= sband->n_channels) {
1303                 band_idx -= sband->n_channels;
1304                 sband = wcn->hw->wiphy->bands[NL80211_BAND_5GHZ];
1305         }
1306
1307         if (!sband || band_idx >= sband->n_channels)
1308                 return -ENOENT;
1309
1310         spin_lock_irqsave(&wcn->survey_lock, flags);
1311
1312         chan_survey = &wcn->chan_survey[idx];
1313         survey->channel = &sband->channels[band_idx];
1314         survey->noise = chan_survey->rssi - chan_survey->snr;
1315         survey->filled = 0;
1316
1317         if (chan_survey->rssi > -100 && chan_survey->rssi < 0)
1318                 survey->filled |= SURVEY_INFO_NOISE_DBM;
1319
1320         if (survey->channel == wcn->channel)
1321                 survey->filled |= SURVEY_INFO_IN_USE;
1322
1323         spin_unlock_irqrestore(&wcn->survey_lock, flags);
1324
1325         wcn36xx_dbg(WCN36XX_DBG_MAC,
1326                     "ch %d rssi %d snr %d noise %d filled %x freq %d\n",
1327                     HW_VALUE_CHANNEL(survey->channel->hw_value),
1328                     chan_survey->rssi, chan_survey->snr, survey->noise,
1329                     survey->filled, survey->channel->center_freq);
1330
1331         return 0;
1332 }
1333
1334 static void wcn36xx_sta_statistics(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1335                                    struct ieee80211_sta *sta, struct station_info *sinfo)
1336 {
1337         struct wcn36xx *wcn;
1338         u8 sta_index;
1339         int status;
1340
1341         wcn = hw->priv;
1342         sta_index = get_sta_index(vif, wcn36xx_sta_to_priv(sta));
1343         status = wcn36xx_smd_get_stats(wcn, sta_index, HAL_GLOBAL_CLASS_A_STATS_INFO, sinfo);
1344
1345         if (status)
1346                 wcn36xx_err("wcn36xx_smd_get_stats failed\n");
1347 }
1348
1349 static const struct ieee80211_ops wcn36xx_ops = {
1350         .start                  = wcn36xx_start,
1351         .stop                   = wcn36xx_stop,
1352         .add_interface          = wcn36xx_add_interface,
1353         .remove_interface       = wcn36xx_remove_interface,
1354 #ifdef CONFIG_PM
1355         .suspend                = wcn36xx_suspend,
1356         .resume                 = wcn36xx_resume,
1357         .set_rekey_data         = wcn36xx_set_rekey_data,
1358 #endif
1359         .config                 = wcn36xx_config,
1360         .prepare_multicast      = wcn36xx_prepare_multicast,
1361         .configure_filter       = wcn36xx_configure_filter,
1362         .tx                     = wcn36xx_tx,
1363         .wake_tx_queue          = ieee80211_handle_wake_tx_queue,
1364         .set_key                = wcn36xx_set_key,
1365         .hw_scan                = wcn36xx_hw_scan,
1366         .cancel_hw_scan         = wcn36xx_cancel_hw_scan,
1367         .sw_scan_start          = wcn36xx_sw_scan_start,
1368         .sw_scan_complete       = wcn36xx_sw_scan_complete,
1369         .bss_info_changed       = wcn36xx_bss_info_changed,
1370         .set_rts_threshold      = wcn36xx_set_rts_threshold,
1371         .sta_add                = wcn36xx_sta_add,
1372         .sta_remove             = wcn36xx_sta_remove,
1373         .sta_statistics         = wcn36xx_sta_statistics,
1374         .ampdu_action           = wcn36xx_ampdu_action,
1375 #if IS_ENABLED(CONFIG_IPV6)
1376         .ipv6_addr_change       = wcn36xx_ipv6_addr_change,
1377 #endif
1378         .flush                  = wcn36xx_flush,
1379         .get_survey             = wcn36xx_get_survey,
1380
1381         CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd)
1382 };
1383
1384 static void
1385 wcn36xx_set_ieee80211_vht_caps(struct ieee80211_sta_vht_cap *vht_cap)
1386 {
1387         vht_cap->vht_supported = true;
1388
1389         vht_cap->cap = (IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 |
1390                         IEEE80211_VHT_CAP_SHORT_GI_80 |
1391                         IEEE80211_VHT_CAP_RXSTBC_1 |
1392                         IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
1393                         IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
1394                         3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT |
1395                         7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
1396
1397         vht_cap->vht_mcs.rx_mcs_map =
1398                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 |
1399                             IEEE80211_VHT_MCS_NOT_SUPPORTED << 2 |
1400                             IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 |
1401                             IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 |
1402                             IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 |
1403                             IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 |
1404                             IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 |
1405                             IEEE80211_VHT_MCS_NOT_SUPPORTED << 14);
1406
1407         vht_cap->vht_mcs.rx_highest = cpu_to_le16(433);
1408         vht_cap->vht_mcs.tx_highest = vht_cap->vht_mcs.rx_highest;
1409
1410         vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map;
1411 }
1412
1413 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
1414 {
1415         static const u32 cipher_suites[] = {
1416                 WLAN_CIPHER_SUITE_WEP40,
1417                 WLAN_CIPHER_SUITE_WEP104,
1418                 WLAN_CIPHER_SUITE_TKIP,
1419                 WLAN_CIPHER_SUITE_CCMP,
1420         };
1421
1422         ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
1423         ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
1424         ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
1425         ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
1426         ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
1427         ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS);
1428         ieee80211_hw_set(wcn->hw, REPORTS_TX_ACK_STATUS);
1429
1430         wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1431                 BIT(NL80211_IFTYPE_AP) |
1432                 BIT(NL80211_IFTYPE_ADHOC) |
1433                 BIT(NL80211_IFTYPE_MESH_POINT);
1434
1435         wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz;
1436         if (wcn->rf_id != RF_IRIS_WCN3620)
1437                 wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz;
1438
1439         if (wcn->rf_id == RF_IRIS_WCN3680)
1440                 wcn36xx_set_ieee80211_vht_caps(&wcn_band_5ghz.vht_cap);
1441
1442         wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS;
1443         wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN;
1444
1445         wcn->hw->wiphy->cipher_suites = cipher_suites;
1446         wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1447
1448 #ifdef CONFIG_PM
1449         wcn->hw->wiphy->wowlan = &wowlan_support;
1450 #endif
1451
1452         wcn->hw->max_listen_interval = 200;
1453
1454         wcn->hw->queues = 4;
1455
1456         SET_IEEE80211_DEV(wcn->hw, wcn->dev);
1457
1458         wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
1459         wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
1460
1461         wiphy_ext_feature_set(wcn->hw->wiphy,
1462                               NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1463
1464         return 0;
1465 }
1466
1467 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
1468                                           struct platform_device *pdev)
1469 {
1470         struct device_node *mmio_node;
1471         struct device_node *iris_node;
1472         int index;
1473         int ret;
1474
1475         /* Set TX IRQ */
1476         ret = platform_get_irq_byname(pdev, "tx");
1477         if (ret < 0)
1478                 return ret;
1479         wcn->tx_irq = ret;
1480
1481         /* Set RX IRQ */
1482         ret = platform_get_irq_byname(pdev, "rx");
1483         if (ret < 0)
1484                 return ret;
1485         wcn->rx_irq = ret;
1486
1487         /* Acquire SMSM tx enable handle */
1488         wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev,
1489                         "tx-enable", &wcn->tx_enable_state_bit);
1490         if (IS_ERR(wcn->tx_enable_state)) {
1491                 wcn36xx_err("failed to get tx-enable state\n");
1492                 return PTR_ERR(wcn->tx_enable_state);
1493         }
1494
1495         /* Acquire SMSM tx rings empty handle */
1496         wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev,
1497                         "tx-rings-empty", &wcn->tx_rings_empty_state_bit);
1498         if (IS_ERR(wcn->tx_rings_empty_state)) {
1499                 wcn36xx_err("failed to get tx-rings-empty state\n");
1500                 return PTR_ERR(wcn->tx_rings_empty_state);
1501         }
1502
1503         mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0);
1504         if (!mmio_node) {
1505                 wcn36xx_err("failed to acquire qcom,mmio reference\n");
1506                 return -EINVAL;
1507         }
1508
1509         wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto");
1510         wcn->is_pronto_v3 = !!of_device_is_compatible(mmio_node, "qcom,pronto-v3-pil");
1511
1512         /* Map the CCU memory */
1513         index = of_property_match_string(mmio_node, "reg-names", "ccu");
1514         wcn->ccu_base = of_iomap(mmio_node, index);
1515         if (!wcn->ccu_base) {
1516                 wcn36xx_err("failed to map ccu memory\n");
1517                 ret = -ENOMEM;
1518                 goto put_mmio_node;
1519         }
1520
1521         /* Map the DXE memory */
1522         index = of_property_match_string(mmio_node, "reg-names", "dxe");
1523         wcn->dxe_base = of_iomap(mmio_node, index);
1524         if (!wcn->dxe_base) {
1525                 wcn36xx_err("failed to map dxe memory\n");
1526                 ret = -ENOMEM;
1527                 goto unmap_ccu;
1528         }
1529
1530         /* External RF module */
1531         iris_node = of_get_child_by_name(mmio_node, "iris");
1532         if (iris_node) {
1533                 if (of_device_is_compatible(iris_node, "qcom,wcn3620"))
1534                         wcn->rf_id = RF_IRIS_WCN3620;
1535                 if (of_device_is_compatible(iris_node, "qcom,wcn3660") ||
1536                     of_device_is_compatible(iris_node, "qcom,wcn3660b"))
1537                         wcn->rf_id = RF_IRIS_WCN3660;
1538                 if (of_device_is_compatible(iris_node, "qcom,wcn3680"))
1539                         wcn->rf_id = RF_IRIS_WCN3680;
1540                 of_node_put(iris_node);
1541         }
1542
1543         of_node_put(mmio_node);
1544         return 0;
1545
1546 unmap_ccu:
1547         iounmap(wcn->ccu_base);
1548 put_mmio_node:
1549         of_node_put(mmio_node);
1550         return ret;
1551 }
1552
1553 static int wcn36xx_probe(struct platform_device *pdev)
1554 {
1555         struct ieee80211_hw *hw;
1556         struct wcn36xx *wcn;
1557         void *wcnss;
1558         int ret;
1559         const u8 *addr;
1560         int n_channels;
1561
1562         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1563
1564         wcnss = dev_get_drvdata(pdev->dev.parent);
1565
1566         hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1567         if (!hw) {
1568                 wcn36xx_err("failed to alloc hw\n");
1569                 ret = -ENOMEM;
1570                 goto out_err;
1571         }
1572         platform_set_drvdata(pdev, hw);
1573         wcn = hw->priv;
1574         wcn->hw = hw;
1575         wcn->dev = &pdev->dev;
1576         wcn->first_boot = true;
1577         mutex_init(&wcn->conf_mutex);
1578         mutex_init(&wcn->hal_mutex);
1579         mutex_init(&wcn->scan_lock);
1580         __skb_queue_head_init(&wcn->amsdu);
1581
1582         wcn->hal_buf = devm_kmalloc(wcn->dev, WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
1583         if (!wcn->hal_buf) {
1584                 ret = -ENOMEM;
1585                 goto out_wq;
1586         }
1587
1588         n_channels = wcn_band_2ghz.n_channels + wcn_band_5ghz.n_channels;
1589         wcn->chan_survey = devm_kmalloc(wcn->dev, n_channels, GFP_KERNEL);
1590         if (!wcn->chan_survey) {
1591                 ret = -ENOMEM;
1592                 goto out_wq;
1593         }
1594
1595         ret = dma_set_mask_and_coherent(wcn->dev, DMA_BIT_MASK(32));
1596         if (ret < 0) {
1597                 wcn36xx_err("failed to set DMA mask: %d\n", ret);
1598                 goto out_wq;
1599         }
1600
1601         wcn->nv_file = WLAN_NV_FILE;
1602         ret = of_property_read_string(wcn->dev->parent->of_node, "firmware-name", &wcn->nv_file);
1603         if (ret < 0 && ret != -EINVAL) {
1604                 wcn36xx_err("failed to read \"firmware-name\" property: %d\n", ret);
1605                 goto out_wq;
1606         }
1607
1608         wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw);
1609         if (IS_ERR(wcn->smd_channel)) {
1610                 wcn36xx_err("failed to open WLAN_CTRL channel\n");
1611                 ret = PTR_ERR(wcn->smd_channel);
1612                 goto out_wq;
1613         }
1614
1615         addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret);
1616         if (addr && ret != ETH_ALEN) {
1617                 wcn36xx_err("invalid local-mac-address\n");
1618                 ret = -EINVAL;
1619                 goto out_destroy_ept;
1620         } else if (addr) {
1621                 wcn36xx_info("mac address: %pM\n", addr);
1622                 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1623         }
1624
1625         ret = wcn36xx_platform_get_resources(wcn, pdev);
1626         if (ret)
1627                 goto out_destroy_ept;
1628
1629         wcn36xx_init_ieee80211(wcn);
1630         ret = ieee80211_register_hw(wcn->hw);
1631         if (ret)
1632                 goto out_unmap;
1633
1634         return 0;
1635
1636 out_unmap:
1637         iounmap(wcn->ccu_base);
1638         iounmap(wcn->dxe_base);
1639 out_destroy_ept:
1640         rpmsg_destroy_ept(wcn->smd_channel);
1641 out_wq:
1642         ieee80211_free_hw(hw);
1643 out_err:
1644         return ret;
1645 }
1646
1647 static void wcn36xx_remove(struct platform_device *pdev)
1648 {
1649         struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1650         struct wcn36xx *wcn = hw->priv;
1651         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1652
1653         release_firmware(wcn->nv);
1654
1655         ieee80211_unregister_hw(hw);
1656
1657         qcom_smem_state_put(wcn->tx_enable_state);
1658         qcom_smem_state_put(wcn->tx_rings_empty_state);
1659
1660         rpmsg_destroy_ept(wcn->smd_channel);
1661
1662         iounmap(wcn->dxe_base);
1663         iounmap(wcn->ccu_base);
1664
1665         __skb_queue_purge(&wcn->amsdu);
1666
1667         mutex_destroy(&wcn->hal_mutex);
1668         ieee80211_free_hw(hw);
1669 }
1670
1671 static const struct of_device_id wcn36xx_of_match[] = {
1672         { .compatible = "qcom,wcnss-wlan" },
1673         {}
1674 };
1675 MODULE_DEVICE_TABLE(of, wcn36xx_of_match);
1676
1677 static struct platform_driver wcn36xx_driver = {
1678         .probe      = wcn36xx_probe,
1679         .remove_new = wcn36xx_remove,
1680         .driver         = {
1681                 .name   = "wcn36xx",
1682                 .of_match_table = wcn36xx_of_match,
1683         },
1684 };
1685
1686 module_platform_driver(wcn36xx_driver);
1687
1688 MODULE_LICENSE("Dual BSD/GPL");
1689 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1690 MODULE_FIRMWARE(WLAN_NV_FILE);