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_address.h>
  23 #include <linux/of_device.h>
  24 #include <linux/of_irq.h>
  25 #include <linux/rpmsg.h>
  26 #include <linux/soc/qcom/smem_state.h>
  27 #include <linux/soc/qcom/wcnss_ctrl.h>
  28 #include "wcn36xx.h"
  29
  30 unsigned int wcn36xx_dbg_mask;
  31 module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644);
  32 MODULE_PARM_DESC(debug_mask, "Debugging mask");
  33
  34 #define CHAN2G(_freq, _idx) { \
  35         .band = NL80211_BAND_2GHZ, \
  36         .center_freq = (_freq), \
  37         .hw_value = (_idx), \
  38         .max_power = 25, \
  39 }
  40
  41 #define CHAN5G(_freq, _idx) { \
  42         .band = NL80211_BAND_5GHZ, \
  43         .center_freq = (_freq), \
  44         .hw_value = (_idx), \
  45         .max_power = 25, \
  46 }
  47
  48 /* The wcn firmware expects channel values to matching
  49  * their mnemonic values. So use these for .hw_value. */
  50 static struct ieee80211_channel wcn_2ghz_channels[] = {
  51         CHAN2G(2412, 1), /* Channel 1 */
  52         CHAN2G(2417, 2), /* Channel 2 */
  53         CHAN2G(2422, 3), /* Channel 3 */
  54         CHAN2G(2427, 4), /* Channel 4 */
  55         CHAN2G(2432, 5), /* Channel 5 */
  56         CHAN2G(2437, 6), /* Channel 6 */
  57         CHAN2G(2442, 7), /* Channel 7 */
  58         CHAN2G(2447, 8), /* Channel 8 */
  59         CHAN2G(2452, 9), /* Channel 9 */
  60         CHAN2G(2457, 10), /* Channel 10 */
  61         CHAN2G(2462, 11), /* Channel 11 */
  62         CHAN2G(2467, 12), /* Channel 12 */
  63         CHAN2G(2472, 13), /* Channel 13 */
  64         CHAN2G(2484, 14)  /* Channel 14 */
  65
  66 };
  67
  68 static struct ieee80211_channel wcn_5ghz_channels[] = {
  69         CHAN5G(5180, 36),
  70         CHAN5G(5200, 40),
  71         CHAN5G(5220, 44),
  72         CHAN5G(5240, 48),
  73         CHAN5G(5260, 52),
  74         CHAN5G(5280, 56),
  75         CHAN5G(5300, 60),
  76         CHAN5G(5320, 64),
  77         CHAN5G(5500, 100),
  78         CHAN5G(5520, 104),
  79         CHAN5G(5540, 108),
  80         CHAN5G(5560, 112),
  81         CHAN5G(5580, 116),
  82         CHAN5G(5600, 120),
  83         CHAN5G(5620, 124),
  84         CHAN5G(5640, 128),
  85         CHAN5G(5660, 132),
  86         CHAN5G(5700, 140),
  87         CHAN5G(5745, 149),
  88         CHAN5G(5765, 153),
  89         CHAN5G(5785, 157),
  90         CHAN5G(5805, 161),
  91         CHAN5G(5825, 165)
  92 };
  93
  94 #define RATE(_bitrate, _hw_rate, _flags) { \
  95         .bitrate        = (_bitrate),                   \
  96         .flags          = (_flags),                     \
  97         .hw_value       = (_hw_rate),                   \
  98         .hw_value_short = (_hw_rate)  \
  99 }
 100
 101 static struct ieee80211_rate wcn_2ghz_rates[] = {
 102         RATE(10, HW_RATE_INDEX_1MBPS, 0),
 103         RATE(20, HW_RATE_INDEX_2MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
 104         RATE(55, HW_RATE_INDEX_5_5MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
 105         RATE(110, HW_RATE_INDEX_11MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
 106         RATE(60, HW_RATE_INDEX_6MBPS, 0),
 107         RATE(90, HW_RATE_INDEX_9MBPS, 0),
 108         RATE(120, HW_RATE_INDEX_12MBPS, 0),
 109         RATE(180, HW_RATE_INDEX_18MBPS, 0),
 110         RATE(240, HW_RATE_INDEX_24MBPS, 0),
 111         RATE(360, HW_RATE_INDEX_36MBPS, 0),
 112         RATE(480, HW_RATE_INDEX_48MBPS, 0),
 113         RATE(540, HW_RATE_INDEX_54MBPS, 0)
 114 };
 115
 116 static struct ieee80211_rate wcn_5ghz_rates[] = {
 117         RATE(60, HW_RATE_INDEX_6MBPS, 0),
 118         RATE(90, HW_RATE_INDEX_9MBPS, 0),
 119         RATE(120, HW_RATE_INDEX_12MBPS, 0),
 120         RATE(180, HW_RATE_INDEX_18MBPS, 0),
 121         RATE(240, HW_RATE_INDEX_24MBPS, 0),
 122         RATE(360, HW_RATE_INDEX_36MBPS, 0),
 123         RATE(480, HW_RATE_INDEX_48MBPS, 0),
 124         RATE(540, HW_RATE_INDEX_54MBPS, 0)
 125 };
 126
 127 static struct ieee80211_supported_band wcn_band_2ghz = {
 128         .channels       = wcn_2ghz_channels,
 129         .n_channels     = ARRAY_SIZE(wcn_2ghz_channels),
 130         .bitrates       = wcn_2ghz_rates,
 131         .n_bitrates     = ARRAY_SIZE(wcn_2ghz_rates),
 132         .ht_cap         = {
 133                 .cap =  IEEE80211_HT_CAP_GRN_FLD |
 134                         IEEE80211_HT_CAP_SGI_20 |
 135                         IEEE80211_HT_CAP_DSSSCCK40 |
 136                         IEEE80211_HT_CAP_LSIG_TXOP_PROT,
 137                 .ht_supported = true,
 138                 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 139                 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
 140                 .mcs = {
 141                         .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
 142                         .rx_highest = cpu_to_le16(72),
 143                         .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
 144                 }
 145         }
 146 };
 147
 148 static struct ieee80211_supported_band wcn_band_5ghz = {
 149         .channels       = wcn_5ghz_channels,
 150         .n_channels     = ARRAY_SIZE(wcn_5ghz_channels),
 151         .bitrates       = wcn_5ghz_rates,
 152         .n_bitrates     = ARRAY_SIZE(wcn_5ghz_rates),
 153         .ht_cap         = {
 154                 .cap =  IEEE80211_HT_CAP_GRN_FLD |
 155                         IEEE80211_HT_CAP_SGI_20 |
 156                         IEEE80211_HT_CAP_DSSSCCK40 |
 157                         IEEE80211_HT_CAP_LSIG_TXOP_PROT |
 158                         IEEE80211_HT_CAP_SGI_40 |
 159                         IEEE80211_HT_CAP_SUP_WIDTH_20_40,
 160                 .ht_supported = true,
 161                 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 162                 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
 163                 .mcs = {
 164                         .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
 165                         .rx_highest = cpu_to_le16(72),
 166                         .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
 167                 }
 168         }
 169 };
 170
 171 #ifdef CONFIG_PM
 172
 173 static const struct wiphy_wowlan_support wowlan_support = {
 174         .flags = WIPHY_WOWLAN_ANY
 175 };
 176
 177 #endif
 178
 179 static inline u8 get_sta_index(struct ieee80211_vif *vif,
 180                                struct wcn36xx_sta *sta_priv)
 181 {
 182         return NL80211_IFTYPE_STATION == vif->type ?
 183                sta_priv->bss_sta_index :
 184                sta_priv->sta_index;
 185 }
 186
 187 static const char * const wcn36xx_caps_names[] = {
 188         "MCC",                          /* 0 */
 189         "P2P",                          /* 1 */
 190         "DOT11AC",                      /* 2 */
 191         "SLM_SESSIONIZATION",           /* 3 */
 192         "DOT11AC_OPMODE",               /* 4 */
 193         "SAP32STA",                     /* 5 */
 194         "TDLS",                         /* 6 */
 195         "P2P_GO_NOA_DECOUPLE_INIT_SCAN",/* 7 */
 196         "WLANACTIVE_OFFLOAD",           /* 8 */
 197         "BEACON_OFFLOAD",               /* 9 */
 198         "SCAN_OFFLOAD",                 /* 10 */
 199         "ROAM_OFFLOAD",                 /* 11 */
 200         "BCN_MISS_OFFLOAD",             /* 12 */
 201         "STA_POWERSAVE",                /* 13 */
 202         "STA_ADVANCED_PWRSAVE",         /* 14 */
 203         "AP_UAPSD",                     /* 15 */
 204         "AP_DFS",                       /* 16 */
 205         "BLOCKACK",                     /* 17 */
 206         "PHY_ERR",                      /* 18 */
 207         "BCN_FILTER",                   /* 19 */
 208         "RTT",                          /* 20 */
 209         "RATECTRL",                     /* 21 */
 210         "WOW",                          /* 22 */
 211         "WLAN_ROAM_SCAN_OFFLOAD",       /* 23 */
 212         "SPECULATIVE_PS_POLL",          /* 24 */
 213         "SCAN_SCH",                     /* 25 */
 214         "IBSS_HEARTBEAT_OFFLOAD",       /* 26 */
 215         "WLAN_SCAN_OFFLOAD",            /* 27 */
 216         "WLAN_PERIODIC_TX_PTRN",        /* 28 */
 217         "ADVANCE_TDLS",                 /* 29 */
 218         "BATCH_SCAN",                   /* 30 */
 219         "FW_IN_TX_PATH",                /* 31 */
 220         "EXTENDED_NSOFFLOAD_SLOT",      /* 32 */
 221         "CH_SWITCH_V1",                 /* 33 */
 222         "HT40_OBSS_SCAN",               /* 34 */
 223         "UPDATE_CHANNEL_LIST",          /* 35 */
 224         "WLAN_MCADDR_FLT",              /* 36 */
 225         "WLAN_CH144",                   /* 37 */
 226         "NAN",                          /* 38 */
 227         "TDLS_SCAN_COEXISTENCE",        /* 39 */
 228         "LINK_LAYER_STATS_MEAS",        /* 40 */
 229         "MU_MIMO",                      /* 41 */
 230         "EXTENDED_SCAN",                /* 42 */
 231         "DYNAMIC_WMM_PS",               /* 43 */
 232         "MAC_SPOOFED_SCAN",             /* 44 */
 233         "BMU_ERROR_GENERIC_RECOVERY",   /* 45 */
 234         "DISA",                         /* 46 */
 235         "FW_STATS",                     /* 47 */
 236         "WPS_PRBRSP_TMPL",              /* 48 */
 237         "BCN_IE_FLT_DELTA",             /* 49 */
 238         "TDLS_OFF_CHANNEL",             /* 51 */
 239         "RTT3",                         /* 52 */
 240         "MGMT_FRAME_LOGGING",           /* 53 */
 241         "ENHANCED_TXBD_COMPLETION",     /* 54 */
 242         "LOGGING_ENHANCEMENT",          /* 55 */
 243         "EXT_SCAN_ENHANCED",            /* 56 */
 244         "MEMORY_DUMP_SUPPORTED",        /* 57 */
 245         "PER_PKT_STATS_SUPPORTED",      /* 58 */
 246         "EXT_LL_STAT",                  /* 60 */
 247         "WIFI_CONFIG",                  /* 61 */
 248         "ANTENNA_DIVERSITY_SELECTION",  /* 62 */
 249 };
 250
 251 static const char *wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x)
 252 {
 253         if (x >= ARRAY_SIZE(wcn36xx_caps_names))
 254                 return "UNKNOWN";
 255         return wcn36xx_caps_names[x];
 256 }
 257
 258 static void wcn36xx_feat_caps_info(struct wcn36xx *wcn)
 259 {
 260         int i;
 261
 262         for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
 263                 if (get_feat_caps(wcn->fw_feat_caps, i))
 264                         wcn36xx_info("FW Cap %s\n", wcn36xx_get_cap_name(i));
 265         }
 266 }
 267
 268 static int wcn36xx_start(struct ieee80211_hw *hw)
 269 {
 270         struct wcn36xx *wcn = hw->priv;
 271         int ret;
 272
 273         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
 274
 275         /* SMD initialization */
 276         ret = wcn36xx_smd_open(wcn);
 277         if (ret) {
 278                 wcn36xx_err("Failed to open smd channel: %d\n", ret);
 279                 goto out_err;
 280         }
 281
 282         /* Allocate memory pools for Mgmt BD headers and Data BD headers */
 283         ret = wcn36xx_dxe_allocate_mem_pools(wcn);
 284         if (ret) {
 285                 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret);
 286                 goto out_smd_close;
 287         }
 288
 289         ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
 290         if (ret) {
 291                 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
 292                 goto out_free_dxe_pool;
 293         }
 294
 295         wcn->hal_buf = kmalloc(WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
 296         if (!wcn->hal_buf) {
 297                 wcn36xx_err("Failed to allocate smd buf\n");
 298                 ret = -ENOMEM;
 299                 goto out_free_dxe_ctl;
 300         }
 301
 302         ret = wcn36xx_smd_load_nv(wcn);
 303         if (ret) {
 304                 wcn36xx_err("Failed to push NV to chip\n");
 305                 goto out_free_smd_buf;
 306         }
 307
 308         ret = wcn36xx_smd_start(wcn);
 309         if (ret) {
 310                 wcn36xx_err("Failed to start chip\n");
 311                 goto out_free_smd_buf;
 312         }
 313
 314         if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
 315                 ret = wcn36xx_smd_feature_caps_exchange(wcn);
 316                 if (ret)
 317                         wcn36xx_warn("Exchange feature caps failed\n");
 318                 else
 319                         wcn36xx_feat_caps_info(wcn);
 320         }
 321
 322         /* DMA channel initialization */
 323         ret = wcn36xx_dxe_init(wcn);
 324         if (ret) {
 325                 wcn36xx_err("DXE init failed\n");
 326                 goto out_smd_stop;
 327         }
 328
 329         wcn36xx_debugfs_init(wcn);
 330
 331         INIT_LIST_HEAD(&wcn->vif_list);
 332         spin_lock_init(&wcn->dxe_lock);
 333
 334         return 0;
 335
 336 out_smd_stop:
 337         wcn36xx_smd_stop(wcn);
 338 out_free_smd_buf:
 339         kfree(wcn->hal_buf);
 340 out_free_dxe_ctl:
 341         wcn36xx_dxe_free_ctl_blks(wcn);
 342 out_free_dxe_pool:
 343         wcn36xx_dxe_free_mem_pools(wcn);
 344 out_smd_close:
 345         wcn36xx_smd_close(wcn);
 346 out_err:
 347         return ret;
 348 }
 349
 350 static void wcn36xx_stop(struct ieee80211_hw *hw)
 351 {
 352         struct wcn36xx *wcn = hw->priv;
 353
 354         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
 355
 356         wcn36xx_debugfs_exit(wcn);
 357         wcn36xx_smd_stop(wcn);
 358         wcn36xx_dxe_deinit(wcn);
 359         wcn36xx_smd_close(wcn);
 360
 361         wcn36xx_dxe_free_mem_pools(wcn);
 362         wcn36xx_dxe_free_ctl_blks(wcn);
 363
 364         kfree(wcn->hal_buf);
 365 }
 366
 367 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
 368 {
 369         struct wcn36xx *wcn = hw->priv;
 370         struct ieee80211_vif *vif = NULL;
 371         struct wcn36xx_vif *tmp;
 372
 373         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
 374
 375         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 376                 int ch = WCN36XX_HW_CHANNEL(wcn);
 377                 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
 378                             ch);
 379                 list_for_each_entry(tmp, &wcn->vif_list, list) {
 380                         vif = wcn36xx_priv_to_vif(tmp);
 381                         wcn36xx_smd_switch_channel(wcn, vif, ch);
 382                 }
 383         }
 384
 385         return 0;
 386 }
 387
 388 static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
 389                                      unsigned int changed,
 390                                      unsigned int *total, u64 multicast)
 391 {
 392         struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
 393         struct wcn36xx *wcn = hw->priv;
 394         struct wcn36xx_vif *tmp;
 395         struct ieee80211_vif *vif = NULL;
 396
 397         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
 398
 399         *total &= FIF_ALLMULTI;
 400
 401         fp = (void *)(unsigned long)multicast;
 402         list_for_each_entry(tmp, &wcn->vif_list, list) {
 403                 vif = wcn36xx_priv_to_vif(tmp);
 404
 405                 /* FW handles MC filtering only when connected as STA */
 406                 if (*total & FIF_ALLMULTI)
 407                         wcn36xx_smd_set_mc_list(wcn, vif, NULL);
 408                 else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc)
 409                         wcn36xx_smd_set_mc_list(wcn, vif, fp);
 410         }
 411         kfree(fp);
 412 }
 413
 414 static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw,
 415                                      struct netdev_hw_addr_list *mc_list)
 416 {
 417         struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
 418         struct netdev_hw_addr *ha;
 419
 420         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n");
 421         fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
 422         if (!fp) {
 423                 wcn36xx_err("Out of memory setting filters.\n");
 424                 return 0;
 425         }
 426
 427         fp->mc_addr_count = 0;
 428         /* update multicast filtering parameters */
 429         if (netdev_hw_addr_list_count(mc_list) <=
 430             WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) {
 431                 netdev_hw_addr_list_for_each(ha, mc_list) {
 432                         memcpy(fp->mc_addr[fp->mc_addr_count],
 433                                         ha->addr, ETH_ALEN);
 434                         fp->mc_addr_count++;
 435                 }
 436         }
 437
 438         return (u64)(unsigned long)fp;
 439 }
 440
 441 static void wcn36xx_tx(struct ieee80211_hw *hw,
 442                        struct ieee80211_tx_control *control,
 443                        struct sk_buff *skb)
 444 {
 445         struct wcn36xx *wcn = hw->priv;
 446         struct wcn36xx_sta *sta_priv = NULL;
 447
 448         if (control->sta)
 449                 sta_priv = wcn36xx_sta_to_priv(control->sta);
 450
 451         if (wcn36xx_start_tx(wcn, sta_priv, skb))
 452                 ieee80211_free_txskb(wcn->hw, skb);
 453 }
 454
 455 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 456                            struct ieee80211_vif *vif,
 457                            struct ieee80211_sta *sta,
 458                            struct ieee80211_key_conf *key_conf)
 459 {
 460         struct wcn36xx *wcn = hw->priv;
 461         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 462         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 463         int ret = 0;
 464         u8 key[WLAN_MAX_KEY_LEN];
 465
 466         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
 467         wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
 468                     cmd, key_conf->cipher, key_conf->keyidx,
 469                     key_conf->keylen, key_conf->flags);
 470         wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
 471                          key_conf->key,
 472                          key_conf->keylen);
 473
 474         switch (key_conf->cipher) {
 475         case WLAN_CIPHER_SUITE_WEP40:
 476                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 477                 break;
 478         case WLAN_CIPHER_SUITE_WEP104:
 479                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 480                 break;
 481         case WLAN_CIPHER_SUITE_CCMP:
 482                 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
 483                 break;
 484         case WLAN_CIPHER_SUITE_TKIP:
 485                 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
 486                 break;
 487         default:
 488                 wcn36xx_err("Unsupported key type 0x%x\n",
 489                               key_conf->cipher);
 490                 ret = -EOPNOTSUPP;
 491                 goto out;
 492         }
 493
 494         switch (cmd) {
 495         case SET_KEY:
 496                 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
 497                         /*
 498                          * Supplicant is sending key in the wrong order:
 499                          * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
 500                          * but HW expects it to be in the order as described in
 501                          * IEEE 802.11 spec (see chapter 11.7) like this:
 502                          * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
 503                          */
 504                         memcpy(key, key_conf->key, 16);
 505                         memcpy(key + 16, key_conf->key + 24, 8);
 506                         memcpy(key + 24, key_conf->key + 16, 8);
 507                 } else {
 508                         memcpy(key, key_conf->key, key_conf->keylen);
 509                 }
 510
 511                 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
 512                         sta_priv->is_data_encrypted = true;
 513                         /* Reconfigure bss with encrypt_type */
 514                         if (NL80211_IFTYPE_STATION == vif->type)
 515                                 wcn36xx_smd_config_bss(wcn,
 516                                                        vif,
 517                                                        sta,
 518                                                        sta->addr,
 519                                                        true);
 520
 521                         wcn36xx_smd_set_stakey(wcn,
 522                                 vif_priv->encrypt_type,
 523                                 key_conf->keyidx,
 524                                 key_conf->keylen,
 525                                 key,
 526                                 get_sta_index(vif, sta_priv));
 527                 } else {
 528                         wcn36xx_smd_set_bsskey(wcn,
 529                                 vif_priv->encrypt_type,
 530                                 key_conf->keyidx,
 531                                 key_conf->keylen,
 532                                 key);
 533                         if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
 534                             (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
 535                                 sta_priv->is_data_encrypted = true;
 536                                 wcn36xx_smd_set_stakey(wcn,
 537                                         vif_priv->encrypt_type,
 538                                         key_conf->keyidx,
 539                                         key_conf->keylen,
 540                                         key,
 541                                         get_sta_index(vif, sta_priv));
 542                         }
 543                 }
 544                 break;
 545         case DISABLE_KEY:
 546                 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
 547                         vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 548                         wcn36xx_smd_remove_bsskey(wcn,
 549                                 vif_priv->encrypt_type,
 550                                 key_conf->keyidx);
 551                 } else {
 552                         sta_priv->is_data_encrypted = false;
 553                         /* do not remove key if disassociated */
 554                         if (sta_priv->aid)
 555                                 wcn36xx_smd_remove_stakey(wcn,
 556                                         vif_priv->encrypt_type,
 557                                         key_conf->keyidx,
 558                                         get_sta_index(vif, sta_priv));
 559                 }
 560                 break;
 561         default:
 562                 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
 563                 ret = -EOPNOTSUPP;
 564                 goto out;
 565         }
 566
 567 out:
 568         return ret;
 569 }
 570
 571 static void wcn36xx_hw_scan_worker(struct work_struct *work)
 572 {
 573         struct wcn36xx *wcn = container_of(work, struct wcn36xx, scan_work);
 574         struct cfg80211_scan_request *req = wcn->scan_req;
 575         u8 channels[WCN36XX_HAL_PNO_MAX_NETW_CHANNELS_EX];
 576         struct cfg80211_scan_info scan_info = {};
 577         bool aborted = false;
 578         int i;
 579
 580         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 scan %d channels worker\n", req->n_channels);
 581
 582         for (i = 0; i < req->n_channels; i++)
 583                 channels[i] = req->channels[i]->hw_value;
 584
 585         wcn36xx_smd_update_scan_params(wcn, channels, req->n_channels);
 586
 587         wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
 588         for (i = 0; i < req->n_channels; i++) {
 589                 mutex_lock(&wcn->scan_lock);
 590                 aborted = wcn->scan_aborted;
 591                 mutex_unlock(&wcn->scan_lock);
 592
 593                 if (aborted)
 594                         break;
 595
 596                 wcn->scan_freq = req->channels[i]->center_freq;
 597                 wcn->scan_band = req->channels[i]->band;
 598
 599                 wcn36xx_smd_start_scan(wcn, req->channels[i]->hw_value);
 600                 msleep(30);
 601                 wcn36xx_smd_end_scan(wcn, req->channels[i]->hw_value);
 602
 603                 wcn->scan_freq = 0;
 604         }
 605         wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
 606
 607         scan_info.aborted = aborted;
 608         ieee80211_scan_completed(wcn->hw, &scan_info);
 609
 610         mutex_lock(&wcn->scan_lock);
 611         wcn->scan_req = NULL;
 612         mutex_unlock(&wcn->scan_lock);
 613 }
 614
 615 static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
 616                            struct ieee80211_vif *vif,
 617                            struct ieee80211_scan_request *hw_req)
 618 {
 619         struct wcn36xx *wcn = hw->priv;
 620
 621         mutex_lock(&wcn->scan_lock);
 622         if (wcn->scan_req) {
 623                 mutex_unlock(&wcn->scan_lock);
 624                 return -EBUSY;
 625         }
 626
 627         wcn->scan_aborted = false;
 628         wcn->scan_req = &hw_req->req;
 629         mutex_unlock(&wcn->scan_lock);
 630
 631         schedule_work(&wcn->scan_work);
 632
 633         return 0;
 634 }
 635
 636 static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw,
 637                                    struct ieee80211_vif *vif)
 638 {
 639         struct wcn36xx *wcn = hw->priv;
 640
 641         mutex_lock(&wcn->scan_lock);
 642         wcn->scan_aborted = true;
 643         mutex_unlock(&wcn->scan_lock);
 644
 645         cancel_work_sync(&wcn->scan_work);
 646 }
 647
 648 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
 649                                          enum nl80211_band band)
 650 {
 651         int i, size;
 652         u16 *rates_table;
 653         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 654         u32 rates = sta->supp_rates[band];
 655
 656         memset(&sta_priv->supported_rates, 0,
 657                 sizeof(sta_priv->supported_rates));
 658         sta_priv->supported_rates.op_rate_mode = STA_11n;
 659
 660         size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
 661         rates_table = sta_priv->supported_rates.dsss_rates;
 662         if (band == NL80211_BAND_2GHZ) {
 663                 for (i = 0; i < size; i++) {
 664                         if (rates & 0x01) {
 665                                 rates_table[i] = wcn_2ghz_rates[i].hw_value;
 666                                 rates = rates >> 1;
 667                         }
 668                 }
 669         }
 670
 671         size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
 672         rates_table = sta_priv->supported_rates.ofdm_rates;
 673         for (i = 0; i < size; i++) {
 674                 if (rates & 0x01) {
 675                         rates_table[i] = wcn_5ghz_rates[i].hw_value;
 676                         rates = rates >> 1;
 677                 }
 678         }
 679
 680         if (sta->ht_cap.ht_supported) {
 681                 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
 682                         sizeof(sta_priv->supported_rates.supported_mcs_set));
 683                 memcpy(sta_priv->supported_rates.supported_mcs_set,
 684                        sta->ht_cap.mcs.rx_mask,
 685                        sizeof(sta->ht_cap.mcs.rx_mask));
 686         }
 687 }
 688 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
 689 {
 690         u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
 691                 HW_RATE_INDEX_6MBPS,
 692                 HW_RATE_INDEX_9MBPS,
 693                 HW_RATE_INDEX_12MBPS,
 694                 HW_RATE_INDEX_18MBPS,
 695                 HW_RATE_INDEX_24MBPS,
 696                 HW_RATE_INDEX_36MBPS,
 697                 HW_RATE_INDEX_48MBPS,
 698                 HW_RATE_INDEX_54MBPS
 699         };
 700         u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
 701                 HW_RATE_INDEX_1MBPS,
 702                 HW_RATE_INDEX_2MBPS,
 703                 HW_RATE_INDEX_5_5MBPS,
 704                 HW_RATE_INDEX_11MBPS
 705         };
 706
 707         rates->op_rate_mode = STA_11n;
 708         memcpy(rates->dsss_rates, dsss_rates,
 709                 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
 710         memcpy(rates->ofdm_rates, ofdm_rates,
 711                 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
 712         rates->supported_mcs_set[0] = 0xFF;
 713 }
 714 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
 715                                      struct ieee80211_vif *vif,
 716                                      struct ieee80211_bss_conf *bss_conf,
 717                                      u32 changed)
 718 {
 719         struct wcn36xx *wcn = hw->priv;
 720         struct sk_buff *skb = NULL;
 721         u16 tim_off, tim_len;
 722         enum wcn36xx_hal_link_state link_state;
 723         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 724
 725         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
 726                     vif, changed);
 727
 728         if (changed & BSS_CHANGED_BEACON_INFO) {
 729                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 730                             "mac bss changed dtim period %d\n",
 731                             bss_conf->dtim_period);
 732
 733                 vif_priv->dtim_period = bss_conf->dtim_period;
 734         }
 735
 736         if (changed & BSS_CHANGED_PS) {
 737                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 738                             "mac bss PS set %d\n",
 739                             bss_conf->ps);
 740                 if (bss_conf->ps) {
 741                         wcn36xx_pmc_enter_bmps_state(wcn, vif);
 742                 } else {
 743                         wcn36xx_pmc_exit_bmps_state(wcn, vif);
 744                 }
 745         }
 746
 747         if (changed & BSS_CHANGED_BSSID) {
 748                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
 749                             bss_conf->bssid);
 750
 751                 if (!is_zero_ether_addr(bss_conf->bssid)) {
 752                         vif_priv->is_joining = true;
 753                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 754                         wcn36xx_smd_join(wcn, bss_conf->bssid,
 755                                          vif->addr, WCN36XX_HW_CHANNEL(wcn));
 756                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 757                                                bss_conf->bssid, false);
 758                 } else {
 759                         vif_priv->is_joining = false;
 760                         wcn36xx_smd_delete_bss(wcn, vif);
 761                         vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 762                 }
 763         }
 764
 765         if (changed & BSS_CHANGED_SSID) {
 766                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 767                             "mac bss changed ssid\n");
 768                 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
 769                                  bss_conf->ssid, bss_conf->ssid_len);
 770
 771                 vif_priv->ssid.length = bss_conf->ssid_len;
 772                 memcpy(&vif_priv->ssid.ssid,
 773                        bss_conf->ssid,
 774                        bss_conf->ssid_len);
 775         }
 776
 777         if (changed & BSS_CHANGED_ASSOC) {
 778                 vif_priv->is_joining = false;
 779                 if (bss_conf->assoc) {
 780                         struct ieee80211_sta *sta;
 781                         struct wcn36xx_sta *sta_priv;
 782
 783                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 784                                     "mac assoc bss %pM vif %pM AID=%d\n",
 785                                      bss_conf->bssid,
 786                                      vif->addr,
 787                                      bss_conf->aid);
 788
 789                         vif_priv->sta_assoc = true;
 790                         rcu_read_lock();
 791                         sta = ieee80211_find_sta(vif, bss_conf->bssid);
 792                         if (!sta) {
 793                                 wcn36xx_err("sta %pM is not found\n",
 794                                               bss_conf->bssid);
 795                                 rcu_read_unlock();
 796                                 goto out;
 797                         }
 798                         sta_priv = wcn36xx_sta_to_priv(sta);
 799
 800                         wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 801
 802                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
 803                                 vif->addr,
 804                                 WCN36XX_HAL_LINK_POSTASSOC_STATE);
 805                         wcn36xx_smd_config_bss(wcn, vif, sta,
 806                                                bss_conf->bssid,
 807                                                true);
 808                         sta_priv->aid = bss_conf->aid;
 809                         /*
 810                          * config_sta must be called from  because this is the
 811                          * place where AID is available.
 812                          */
 813                         wcn36xx_smd_config_sta(wcn, vif, sta);
 814                         rcu_read_unlock();
 815                 } else {
 816                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 817                                     "disassociated bss %pM vif %pM AID=%d\n",
 818                                     bss_conf->bssid,
 819                                     vif->addr,
 820                                     bss_conf->aid);
 821                         vif_priv->sta_assoc = false;
 822                         wcn36xx_smd_set_link_st(wcn,
 823                                                 bss_conf->bssid,
 824                                                 vif->addr,
 825                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 826                 }
 827         }
 828
 829         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 830                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
 831                 skb = ieee80211_proberesp_get(hw, vif);
 832                 if (!skb) {
 833                         wcn36xx_err("failed to alloc probereq skb\n");
 834                         goto out;
 835                 }
 836
 837                 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
 838                 dev_kfree_skb(skb);
 839         }
 840
 841         if (changed & BSS_CHANGED_BEACON_ENABLED ||
 842             changed & BSS_CHANGED_BEACON) {
 843                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 844                             "mac bss changed beacon enabled %d\n",
 845                             bss_conf->enable_beacon);
 846
 847                 if (bss_conf->enable_beacon) {
 848                         vif_priv->dtim_period = bss_conf->dtim_period;
 849                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 850                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 851                                                vif->addr, false);
 852                         skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
 853                                                        &tim_len);
 854                         if (!skb) {
 855                                 wcn36xx_err("failed to alloc beacon skb\n");
 856                                 goto out;
 857                         }
 858                         wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
 859                         dev_kfree_skb(skb);
 860
 861                         if (vif->type == NL80211_IFTYPE_ADHOC ||
 862                             vif->type == NL80211_IFTYPE_MESH_POINT)
 863                                 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
 864                         else
 865                                 link_state = WCN36XX_HAL_LINK_AP_STATE;
 866
 867                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 868                                                 link_state);
 869                 } else {
 870                         wcn36xx_smd_delete_bss(wcn, vif);
 871                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 872                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 873                 }
 874         }
 875 out:
 876         return;
 877 }
 878
 879 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
 880 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 881 {
 882         struct wcn36xx *wcn = hw->priv;
 883         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
 884
 885         wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
 886         return 0;
 887 }
 888
 889 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
 890                                      struct ieee80211_vif *vif)
 891 {
 892         struct wcn36xx *wcn = hw->priv;
 893         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 894         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
 895
 896         list_del(&vif_priv->list);
 897         wcn36xx_smd_delete_sta_self(wcn, vif->addr);
 898 }
 899
 900 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
 901                                  struct ieee80211_vif *vif)
 902 {
 903         struct wcn36xx *wcn = hw->priv;
 904         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 905
 906         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
 907                     vif, vif->type);
 908
 909         if (!(NL80211_IFTYPE_STATION == vif->type ||
 910               NL80211_IFTYPE_AP == vif->type ||
 911               NL80211_IFTYPE_ADHOC == vif->type ||
 912               NL80211_IFTYPE_MESH_POINT == vif->type)) {
 913                 wcn36xx_warn("Unsupported interface type requested: %d\n",
 914                              vif->type);
 915                 return -EOPNOTSUPP;
 916         }
 917
 918         list_add(&vif_priv->list, &wcn->vif_list);
 919         wcn36xx_smd_add_sta_self(wcn, vif);
 920
 921         return 0;
 922 }
 923
 924 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 925                            struct ieee80211_sta *sta)
 926 {
 927         struct wcn36xx *wcn = hw->priv;
 928         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 929         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 930         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
 931                     vif, sta->addr);
 932
 933         spin_lock_init(&sta_priv->ampdu_lock);
 934         sta_priv->vif = vif_priv;
 935         /*
 936          * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
 937          * at this stage AID is not available yet.
 938          */
 939         if (NL80211_IFTYPE_STATION != vif->type) {
 940                 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 941                 sta_priv->aid = sta->aid;
 942                 wcn36xx_smd_config_sta(wcn, vif, sta);
 943         }
 944         return 0;
 945 }
 946
 947 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
 948                               struct ieee80211_vif *vif,
 949                               struct ieee80211_sta *sta)
 950 {
 951         struct wcn36xx *wcn = hw->priv;
 952         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 953
 954         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
 955                     vif, sta->addr, sta_priv->sta_index);
 956
 957         wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
 958         sta_priv->vif = NULL;
 959         return 0;
 960 }
 961
 962 #ifdef CONFIG_PM
 963
 964 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
 965 {
 966         struct wcn36xx *wcn = hw->priv;
 967
 968         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
 969
 970         flush_workqueue(wcn->hal_ind_wq);
 971         wcn36xx_smd_set_power_params(wcn, true);
 972         return 0;
 973 }
 974
 975 static int wcn36xx_resume(struct ieee80211_hw *hw)
 976 {
 977         struct wcn36xx *wcn = hw->priv;
 978
 979         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
 980
 981         flush_workqueue(wcn->hal_ind_wq);
 982         wcn36xx_smd_set_power_params(wcn, false);
 983         return 0;
 984 }
 985
 986 #endif
 987
 988 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
 989                     struct ieee80211_vif *vif,
 990                     struct ieee80211_ampdu_params *params)
 991 {
 992         struct wcn36xx *wcn = hw->priv;
 993         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta);
 994         struct ieee80211_sta *sta = params->sta;
 995         enum ieee80211_ampdu_mlme_action action = params->action;
 996         u16 tid = params->tid;
 997         u16 *ssn = &params->ssn;
 998
 999         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
1000                     action, tid);
1001
1002         switch (action) {
1003         case IEEE80211_AMPDU_RX_START:
1004                 sta_priv->tid = tid;
1005                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
1006                         get_sta_index(vif, sta_priv));
1007                 wcn36xx_smd_add_ba(wcn);
1008                 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv));
1009                 break;
1010         case IEEE80211_AMPDU_RX_STOP:
1011                 wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
1012                 break;
1013         case IEEE80211_AMPDU_TX_START:
1014                 spin_lock_bh(&sta_priv->ampdu_lock);
1015                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
1016                 spin_unlock_bh(&sta_priv->ampdu_lock);
1017
1018                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1019                 break;
1020         case IEEE80211_AMPDU_TX_OPERATIONAL:
1021                 spin_lock_bh(&sta_priv->ampdu_lock);
1022                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
1023                 spin_unlock_bh(&sta_priv->ampdu_lock);
1024
1025                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
1026                         get_sta_index(vif, sta_priv));
1027                 break;
1028         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1029         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1030         case IEEE80211_AMPDU_TX_STOP_CONT:
1031                 spin_lock_bh(&sta_priv->ampdu_lock);
1032                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
1033                 spin_unlock_bh(&sta_priv->ampdu_lock);
1034
1035                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1036                 break;
1037         default:
1038                 wcn36xx_err("Unknown AMPDU action\n");
1039         }
1040
1041         return 0;
1042 }
1043
1044 static const struct ieee80211_ops wcn36xx_ops = {
1045         .start                  = wcn36xx_start,
1046         .stop                   = wcn36xx_stop,
1047         .add_interface          = wcn36xx_add_interface,
1048         .remove_interface       = wcn36xx_remove_interface,
1049 #ifdef CONFIG_PM
1050         .suspend                = wcn36xx_suspend,
1051         .resume                 = wcn36xx_resume,
1052 #endif
1053         .config                 = wcn36xx_config,
1054         .prepare_multicast      = wcn36xx_prepare_multicast,
1055         .configure_filter       = wcn36xx_configure_filter,
1056         .tx                     = wcn36xx_tx,
1057         .set_key                = wcn36xx_set_key,
1058         .hw_scan                = wcn36xx_hw_scan,
1059         .cancel_hw_scan         = wcn36xx_cancel_hw_scan,
1060         .bss_info_changed       = wcn36xx_bss_info_changed,
1061         .set_rts_threshold      = wcn36xx_set_rts_threshold,
1062         .sta_add                = wcn36xx_sta_add,
1063         .sta_remove             = wcn36xx_sta_remove,
1064         .ampdu_action           = wcn36xx_ampdu_action,
1065 };
1066
1067 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
1068 {
1069         int ret = 0;
1070
1071         static const u32 cipher_suites[] = {
1072                 WLAN_CIPHER_SUITE_WEP40,
1073                 WLAN_CIPHER_SUITE_WEP104,
1074                 WLAN_CIPHER_SUITE_TKIP,
1075                 WLAN_CIPHER_SUITE_CCMP,
1076         };
1077
1078         ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
1079         ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
1080         ieee80211_hw_set(wcn->hw, CONNECTION_MONITOR);
1081         ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
1082         ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
1083         ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
1084         ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS);
1085
1086         wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1087                 BIT(NL80211_IFTYPE_AP) |
1088                 BIT(NL80211_IFTYPE_ADHOC) |
1089                 BIT(NL80211_IFTYPE_MESH_POINT);
1090
1091         wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz;
1092         wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz;
1093
1094         wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS;
1095         wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN;
1096
1097         wcn->hw->wiphy->cipher_suites = cipher_suites;
1098         wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1099
1100         wcn->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1101
1102 #ifdef CONFIG_PM
1103         wcn->hw->wiphy->wowlan = &wowlan_support;
1104 #endif
1105
1106         wcn->hw->max_listen_interval = 200;
1107
1108         wcn->hw->queues = 4;
1109
1110         SET_IEEE80211_DEV(wcn->hw, wcn->dev);
1111
1112         wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
1113         wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
1114
1115         wiphy_ext_feature_set(wcn->hw->wiphy,
1116                               NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1117
1118         return ret;
1119 }
1120
1121 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
1122                                           struct platform_device *pdev)
1123 {
1124         struct device_node *mmio_node;
1125         struct resource *res;
1126         int index;
1127         int ret;
1128
1129         /* Set TX IRQ */
1130         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "tx");
1131         if (!res) {
1132                 wcn36xx_err("failed to get tx_irq\n");
1133                 return -ENOENT;
1134         }
1135         wcn->tx_irq = res->start;
1136
1137         /* Set RX IRQ */
1138         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "rx");
1139         if (!res) {
1140                 wcn36xx_err("failed to get rx_irq\n");
1141                 return -ENOENT;
1142         }
1143         wcn->rx_irq = res->start;
1144
1145         /* Acquire SMSM tx enable handle */
1146         wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev,
1147                         "tx-enable", &wcn->tx_enable_state_bit);
1148         if (IS_ERR(wcn->tx_enable_state)) {
1149                 wcn36xx_err("failed to get tx-enable state\n");
1150                 return PTR_ERR(wcn->tx_enable_state);
1151         }
1152
1153         /* Acquire SMSM tx rings empty handle */
1154         wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev,
1155                         "tx-rings-empty", &wcn->tx_rings_empty_state_bit);
1156         if (IS_ERR(wcn->tx_rings_empty_state)) {
1157                 wcn36xx_err("failed to get tx-rings-empty state\n");
1158                 return PTR_ERR(wcn->tx_rings_empty_state);
1159         }
1160
1161         mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0);
1162         if (!mmio_node) {
1163                 wcn36xx_err("failed to acquire qcom,mmio reference\n");
1164                 return -EINVAL;
1165         }
1166
1167         wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto");
1168
1169         /* Map the CCU memory */
1170         index = of_property_match_string(mmio_node, "reg-names", "ccu");
1171         wcn->ccu_base = of_iomap(mmio_node, index);
1172         if (!wcn->ccu_base) {
1173                 wcn36xx_err("failed to map ccu memory\n");
1174                 ret = -ENOMEM;
1175                 goto put_mmio_node;
1176         }
1177
1178         /* Map the DXE memory */
1179         index = of_property_match_string(mmio_node, "reg-names", "dxe");
1180         wcn->dxe_base = of_iomap(mmio_node, index);
1181         if (!wcn->dxe_base) {
1182                 wcn36xx_err("failed to map dxe memory\n");
1183                 ret = -ENOMEM;
1184                 goto unmap_ccu;
1185         }
1186
1187         of_node_put(mmio_node);
1188         return 0;
1189
1190 unmap_ccu:
1191         iounmap(wcn->ccu_base);
1192 put_mmio_node:
1193         of_node_put(mmio_node);
1194         return ret;
1195 }
1196
1197 static int wcn36xx_probe(struct platform_device *pdev)
1198 {
1199         struct ieee80211_hw *hw;
1200         struct wcn36xx *wcn;
1201         void *wcnss;
1202         int ret;
1203         const u8 *addr;
1204
1205         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1206
1207         wcnss = dev_get_drvdata(pdev->dev.parent);
1208
1209         hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1210         if (!hw) {
1211                 wcn36xx_err("failed to alloc hw\n");
1212                 ret = -ENOMEM;
1213                 goto out_err;
1214         }
1215         platform_set_drvdata(pdev, hw);
1216         wcn = hw->priv;
1217         wcn->hw = hw;
1218         wcn->dev = &pdev->dev;
1219         mutex_init(&wcn->hal_mutex);
1220         mutex_init(&wcn->scan_lock);
1221
1222         INIT_WORK(&wcn->scan_work, wcn36xx_hw_scan_worker);
1223
1224         wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw);
1225         if (IS_ERR(wcn->smd_channel)) {
1226                 wcn36xx_err("failed to open WLAN_CTRL channel\n");
1227                 ret = PTR_ERR(wcn->smd_channel);
1228                 goto out_wq;
1229         }
1230
1231         addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret);
1232         if (addr && ret != ETH_ALEN) {
1233                 wcn36xx_err("invalid local-mac-address\n");
1234                 ret = -EINVAL;
1235                 goto out_wq;
1236         } else if (addr) {
1237                 wcn36xx_info("mac address: %pM\n", addr);
1238                 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1239         }
1240
1241         ret = wcn36xx_platform_get_resources(wcn, pdev);
1242         if (ret)
1243                 goto out_wq;
1244
1245         wcn36xx_init_ieee80211(wcn);
1246         ret = ieee80211_register_hw(wcn->hw);
1247         if (ret)
1248                 goto out_unmap;
1249
1250         return 0;
1251
1252 out_unmap:
1253         iounmap(wcn->ccu_base);
1254         iounmap(wcn->dxe_base);
1255 out_wq:
1256         ieee80211_free_hw(hw);
1257 out_err:
1258         return ret;
1259 }
1260
1261 static int wcn36xx_remove(struct platform_device *pdev)
1262 {
1263         struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1264         struct wcn36xx *wcn = hw->priv;
1265         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1266
1267         release_firmware(wcn->nv);
1268
1269         ieee80211_unregister_hw(hw);
1270
1271         qcom_smem_state_put(wcn->tx_enable_state);
1272         qcom_smem_state_put(wcn->tx_rings_empty_state);
1273
1274         rpmsg_destroy_ept(wcn->smd_channel);
1275
1276         iounmap(wcn->dxe_base);
1277         iounmap(wcn->ccu_base);
1278
1279         mutex_destroy(&wcn->hal_mutex);
1280         ieee80211_free_hw(hw);
1281
1282         return 0;
1283 }
1284
1285 static const struct of_device_id wcn36xx_of_match[] = {
1286         { .compatible = "qcom,wcnss-wlan" },
1287         {}
1288 };
1289 MODULE_DEVICE_TABLE(of, wcn36xx_of_match);
1290
1291 static struct platform_driver wcn36xx_driver = {
1292         .probe      = wcn36xx_probe,
1293         .remove     = wcn36xx_remove,
1294         .driver         = {
1295                 .name   = "wcn36xx",
1296                 .of_match_table = wcn36xx_of_match,
1297         },
1298 };
1299
1300 module_platform_driver(wcn36xx_driver);
1301
1302 MODULE_LICENSE("Dual BSD/GPL");
1303 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1304 MODULE_FIRMWARE(WLAN_NV_FILE);