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         mutex_lock(&wcn->conf_mutex);
 376
 377         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 378                 int ch = WCN36XX_HW_CHANNEL(wcn);
 379                 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
 380                             ch);
 381                 list_for_each_entry(tmp, &wcn->vif_list, list) {
 382                         vif = wcn36xx_priv_to_vif(tmp);
 383                         wcn36xx_smd_switch_channel(wcn, vif, ch);
 384                 }
 385         }
 386
 387         mutex_unlock(&wcn->conf_mutex);
 388
 389         return 0;
 390 }
 391
 392 static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
 393                                      unsigned int changed,
 394                                      unsigned int *total, u64 multicast)
 395 {
 396         struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
 397         struct wcn36xx *wcn = hw->priv;
 398         struct wcn36xx_vif *tmp;
 399         struct ieee80211_vif *vif = NULL;
 400
 401         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
 402
 403         mutex_lock(&wcn->conf_mutex);
 404
 405         *total &= FIF_ALLMULTI;
 406
 407         fp = (void *)(unsigned long)multicast;
 408         list_for_each_entry(tmp, &wcn->vif_list, list) {
 409                 vif = wcn36xx_priv_to_vif(tmp);
 410
 411                 /* FW handles MC filtering only when connected as STA */
 412                 if (*total & FIF_ALLMULTI)
 413                         wcn36xx_smd_set_mc_list(wcn, vif, NULL);
 414                 else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc)
 415                         wcn36xx_smd_set_mc_list(wcn, vif, fp);
 416         }
 417
 418         mutex_unlock(&wcn->conf_mutex);
 419         kfree(fp);
 420 }
 421
 422 static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw,
 423                                      struct netdev_hw_addr_list *mc_list)
 424 {
 425         struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
 426         struct netdev_hw_addr *ha;
 427
 428         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n");
 429         fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
 430         if (!fp) {
 431                 wcn36xx_err("Out of memory setting filters.\n");
 432                 return 0;
 433         }
 434
 435         fp->mc_addr_count = 0;
 436         /* update multicast filtering parameters */
 437         if (netdev_hw_addr_list_count(mc_list) <=
 438             WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) {
 439                 netdev_hw_addr_list_for_each(ha, mc_list) {
 440                         memcpy(fp->mc_addr[fp->mc_addr_count],
 441                                         ha->addr, ETH_ALEN);
 442                         fp->mc_addr_count++;
 443                 }
 444         }
 445
 446         return (u64)(unsigned long)fp;
 447 }
 448
 449 static void wcn36xx_tx(struct ieee80211_hw *hw,
 450                        struct ieee80211_tx_control *control,
 451                        struct sk_buff *skb)
 452 {
 453         struct wcn36xx *wcn = hw->priv;
 454         struct wcn36xx_sta *sta_priv = NULL;
 455
 456         if (control->sta)
 457                 sta_priv = wcn36xx_sta_to_priv(control->sta);
 458
 459         if (wcn36xx_start_tx(wcn, sta_priv, skb))
 460                 ieee80211_free_txskb(wcn->hw, skb);
 461 }
 462
 463 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 464                            struct ieee80211_vif *vif,
 465                            struct ieee80211_sta *sta,
 466                            struct ieee80211_key_conf *key_conf)
 467 {
 468         struct wcn36xx *wcn = hw->priv;
 469         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 470         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 471         int ret = 0;
 472         u8 key[WLAN_MAX_KEY_LEN];
 473
 474         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
 475         wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
 476                     cmd, key_conf->cipher, key_conf->keyidx,
 477                     key_conf->keylen, key_conf->flags);
 478         wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
 479                          key_conf->key,
 480                          key_conf->keylen);
 481
 482         mutex_lock(&wcn->conf_mutex);
 483
 484         switch (key_conf->cipher) {
 485         case WLAN_CIPHER_SUITE_WEP40:
 486                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 487                 break;
 488         case WLAN_CIPHER_SUITE_WEP104:
 489                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 490                 break;
 491         case WLAN_CIPHER_SUITE_CCMP:
 492                 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
 493                 break;
 494         case WLAN_CIPHER_SUITE_TKIP:
 495                 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
 496                 break;
 497         default:
 498                 wcn36xx_err("Unsupported key type 0x%x\n",
 499                               key_conf->cipher);
 500                 ret = -EOPNOTSUPP;
 501                 goto out;
 502         }
 503
 504         switch (cmd) {
 505         case SET_KEY:
 506                 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
 507                         /*
 508                          * Supplicant is sending key in the wrong order:
 509                          * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
 510                          * but HW expects it to be in the order as described in
 511                          * IEEE 802.11 spec (see chapter 11.7) like this:
 512                          * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
 513                          */
 514                         memcpy(key, key_conf->key, 16);
 515                         memcpy(key + 16, key_conf->key + 24, 8);
 516                         memcpy(key + 24, key_conf->key + 16, 8);
 517                 } else {
 518                         memcpy(key, key_conf->key, key_conf->keylen);
 519                 }
 520
 521                 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
 522                         sta_priv->is_data_encrypted = true;
 523                         /* Reconfigure bss with encrypt_type */
 524                         if (NL80211_IFTYPE_STATION == vif->type)
 525                                 wcn36xx_smd_config_bss(wcn,
 526                                                        vif,
 527                                                        sta,
 528                                                        sta->addr,
 529                                                        true);
 530
 531                         wcn36xx_smd_set_stakey(wcn,
 532                                 vif_priv->encrypt_type,
 533                                 key_conf->keyidx,
 534                                 key_conf->keylen,
 535                                 key,
 536                                 get_sta_index(vif, sta_priv));
 537                 } else {
 538                         wcn36xx_smd_set_bsskey(wcn,
 539                                 vif_priv->encrypt_type,
 540                                 key_conf->keyidx,
 541                                 key_conf->keylen,
 542                                 key);
 543                         if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
 544                             (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
 545                                 sta_priv->is_data_encrypted = true;
 546                                 wcn36xx_smd_set_stakey(wcn,
 547                                         vif_priv->encrypt_type,
 548                                         key_conf->keyidx,
 549                                         key_conf->keylen,
 550                                         key,
 551                                         get_sta_index(vif, sta_priv));
 552                         }
 553                 }
 554                 break;
 555         case DISABLE_KEY:
 556                 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
 557                         vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 558                         wcn36xx_smd_remove_bsskey(wcn,
 559                                 vif_priv->encrypt_type,
 560                                 key_conf->keyidx);
 561                 } else {
 562                         sta_priv->is_data_encrypted = false;
 563                         /* do not remove key if disassociated */
 564                         if (sta_priv->aid)
 565                                 wcn36xx_smd_remove_stakey(wcn,
 566                                         vif_priv->encrypt_type,
 567                                         key_conf->keyidx,
 568                                         get_sta_index(vif, sta_priv));
 569                 }
 570                 break;
 571         default:
 572                 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
 573                 ret = -EOPNOTSUPP;
 574                 goto out;
 575         }
 576
 577 out:
 578         mutex_unlock(&wcn->conf_mutex);
 579
 580         return ret;
 581 }
 582
 583 static void wcn36xx_hw_scan_worker(struct work_struct *work)
 584 {
 585         struct wcn36xx *wcn = container_of(work, struct wcn36xx, scan_work);
 586         struct cfg80211_scan_request *req = wcn->scan_req;
 587         u8 channels[WCN36XX_HAL_PNO_MAX_NETW_CHANNELS_EX];
 588         struct cfg80211_scan_info scan_info = {};
 589         bool aborted = false;
 590         int i;
 591
 592         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 scan %d channels worker\n", req->n_channels);
 593
 594         for (i = 0; i < req->n_channels; i++)
 595                 channels[i] = req->channels[i]->hw_value;
 596
 597         wcn36xx_smd_update_scan_params(wcn, channels, req->n_channels);
 598
 599         wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
 600         for (i = 0; i < req->n_channels; i++) {
 601                 mutex_lock(&wcn->scan_lock);
 602                 aborted = wcn->scan_aborted;
 603                 mutex_unlock(&wcn->scan_lock);
 604
 605                 if (aborted)
 606                         break;
 607
 608                 wcn->scan_freq = req->channels[i]->center_freq;
 609                 wcn->scan_band = req->channels[i]->band;
 610
 611                 wcn36xx_smd_start_scan(wcn, req->channels[i]->hw_value);
 612                 msleep(30);
 613                 wcn36xx_smd_end_scan(wcn, req->channels[i]->hw_value);
 614
 615                 wcn->scan_freq = 0;
 616         }
 617         wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
 618
 619         scan_info.aborted = aborted;
 620         ieee80211_scan_completed(wcn->hw, &scan_info);
 621
 622         mutex_lock(&wcn->scan_lock);
 623         wcn->scan_req = NULL;
 624         mutex_unlock(&wcn->scan_lock);
 625 }
 626
 627 static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
 628                            struct ieee80211_vif *vif,
 629                            struct ieee80211_scan_request *hw_req)
 630 {
 631         struct wcn36xx *wcn = hw->priv;
 632
 633         mutex_lock(&wcn->scan_lock);
 634         if (wcn->scan_req) {
 635                 mutex_unlock(&wcn->scan_lock);
 636                 return -EBUSY;
 637         }
 638
 639         wcn->scan_aborted = false;
 640         wcn->scan_req = &hw_req->req;
 641         mutex_unlock(&wcn->scan_lock);
 642
 643         schedule_work(&wcn->scan_work);
 644
 645         return 0;
 646 }
 647
 648 static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw,
 649                                    struct ieee80211_vif *vif)
 650 {
 651         struct wcn36xx *wcn = hw->priv;
 652
 653         mutex_lock(&wcn->scan_lock);
 654         wcn->scan_aborted = true;
 655         mutex_unlock(&wcn->scan_lock);
 656
 657         cancel_work_sync(&wcn->scan_work);
 658 }
 659
 660 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
 661                                          enum nl80211_band band)
 662 {
 663         int i, size;
 664         u16 *rates_table;
 665         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 666         u32 rates = sta->supp_rates[band];
 667
 668         memset(&sta_priv->supported_rates, 0,
 669                 sizeof(sta_priv->supported_rates));
 670         sta_priv->supported_rates.op_rate_mode = STA_11n;
 671
 672         size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
 673         rates_table = sta_priv->supported_rates.dsss_rates;
 674         if (band == NL80211_BAND_2GHZ) {
 675                 for (i = 0; i < size; i++) {
 676                         if (rates & 0x01) {
 677                                 rates_table[i] = wcn_2ghz_rates[i].hw_value;
 678                                 rates = rates >> 1;
 679                         }
 680                 }
 681         }
 682
 683         size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
 684         rates_table = sta_priv->supported_rates.ofdm_rates;
 685         for (i = 0; i < size; i++) {
 686                 if (rates & 0x01) {
 687                         rates_table[i] = wcn_5ghz_rates[i].hw_value;
 688                         rates = rates >> 1;
 689                 }
 690         }
 691
 692         if (sta->ht_cap.ht_supported) {
 693                 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
 694                         sizeof(sta_priv->supported_rates.supported_mcs_set));
 695                 memcpy(sta_priv->supported_rates.supported_mcs_set,
 696                        sta->ht_cap.mcs.rx_mask,
 697                        sizeof(sta->ht_cap.mcs.rx_mask));
 698         }
 699 }
 700 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
 701 {
 702         u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
 703                 HW_RATE_INDEX_6MBPS,
 704                 HW_RATE_INDEX_9MBPS,
 705                 HW_RATE_INDEX_12MBPS,
 706                 HW_RATE_INDEX_18MBPS,
 707                 HW_RATE_INDEX_24MBPS,
 708                 HW_RATE_INDEX_36MBPS,
 709                 HW_RATE_INDEX_48MBPS,
 710                 HW_RATE_INDEX_54MBPS
 711         };
 712         u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
 713                 HW_RATE_INDEX_1MBPS,
 714                 HW_RATE_INDEX_2MBPS,
 715                 HW_RATE_INDEX_5_5MBPS,
 716                 HW_RATE_INDEX_11MBPS
 717         };
 718
 719         rates->op_rate_mode = STA_11n;
 720         memcpy(rates->dsss_rates, dsss_rates,
 721                 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
 722         memcpy(rates->ofdm_rates, ofdm_rates,
 723                 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
 724         rates->supported_mcs_set[0] = 0xFF;
 725 }
 726 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
 727                                      struct ieee80211_vif *vif,
 728                                      struct ieee80211_bss_conf *bss_conf,
 729                                      u32 changed)
 730 {
 731         struct wcn36xx *wcn = hw->priv;
 732         struct sk_buff *skb = NULL;
 733         u16 tim_off, tim_len;
 734         enum wcn36xx_hal_link_state link_state;
 735         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 736
 737         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
 738                     vif, changed);
 739
 740         mutex_lock(&wcn->conf_mutex);
 741
 742         if (changed & BSS_CHANGED_BEACON_INFO) {
 743                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 744                             "mac bss changed dtim period %d\n",
 745                             bss_conf->dtim_period);
 746
 747                 vif_priv->dtim_period = bss_conf->dtim_period;
 748         }
 749
 750         if (changed & BSS_CHANGED_PS) {
 751                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 752                             "mac bss PS set %d\n",
 753                             bss_conf->ps);
 754                 if (bss_conf->ps) {
 755                         wcn36xx_pmc_enter_bmps_state(wcn, vif);
 756                 } else {
 757                         wcn36xx_pmc_exit_bmps_state(wcn, vif);
 758                 }
 759         }
 760
 761         if (changed & BSS_CHANGED_BSSID) {
 762                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
 763                             bss_conf->bssid);
 764
 765                 if (!is_zero_ether_addr(bss_conf->bssid)) {
 766                         vif_priv->is_joining = true;
 767                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 768                         wcn36xx_smd_join(wcn, bss_conf->bssid,
 769                                          vif->addr, WCN36XX_HW_CHANNEL(wcn));
 770                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 771                                                bss_conf->bssid, false);
 772                 } else {
 773                         vif_priv->is_joining = false;
 774                         wcn36xx_smd_delete_bss(wcn, vif);
 775                         vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 776                 }
 777         }
 778
 779         if (changed & BSS_CHANGED_SSID) {
 780                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 781                             "mac bss changed ssid\n");
 782                 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
 783                                  bss_conf->ssid, bss_conf->ssid_len);
 784
 785                 vif_priv->ssid.length = bss_conf->ssid_len;
 786                 memcpy(&vif_priv->ssid.ssid,
 787                        bss_conf->ssid,
 788                        bss_conf->ssid_len);
 789         }
 790
 791         if (changed & BSS_CHANGED_ASSOC) {
 792                 vif_priv->is_joining = false;
 793                 if (bss_conf->assoc) {
 794                         struct ieee80211_sta *sta;
 795                         struct wcn36xx_sta *sta_priv;
 796
 797                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 798                                     "mac assoc bss %pM vif %pM AID=%d\n",
 799                                      bss_conf->bssid,
 800                                      vif->addr,
 801                                      bss_conf->aid);
 802
 803                         vif_priv->sta_assoc = true;
 804
 805                         /*
 806                          * Holding conf_mutex ensures mutal exclusion with
 807                          * wcn36xx_sta_remove() and as such ensures that sta
 808                          * won't be freed while we're operating on it. As such
 809                          * we do not need to hold the rcu_read_lock().
 810                          */
 811                         sta = ieee80211_find_sta(vif, bss_conf->bssid);
 812                         if (!sta) {
 813                                 wcn36xx_err("sta %pM is not found\n",
 814                                               bss_conf->bssid);
 815                                 goto out;
 816                         }
 817                         sta_priv = wcn36xx_sta_to_priv(sta);
 818
 819                         wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 820
 821                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
 822                                 vif->addr,
 823                                 WCN36XX_HAL_LINK_POSTASSOC_STATE);
 824                         wcn36xx_smd_config_bss(wcn, vif, sta,
 825                                                bss_conf->bssid,
 826                                                true);
 827                         sta_priv->aid = bss_conf->aid;
 828                         /*
 829                          * config_sta must be called from  because this is the
 830                          * place where AID is available.
 831                          */
 832                         wcn36xx_smd_config_sta(wcn, vif, sta);
 833                 } else {
 834                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 835                                     "disassociated bss %pM vif %pM AID=%d\n",
 836                                     bss_conf->bssid,
 837                                     vif->addr,
 838                                     bss_conf->aid);
 839                         vif_priv->sta_assoc = false;
 840                         wcn36xx_smd_set_link_st(wcn,
 841                                                 bss_conf->bssid,
 842                                                 vif->addr,
 843                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 844                 }
 845         }
 846
 847         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 848                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
 849                 skb = ieee80211_proberesp_get(hw, vif);
 850                 if (!skb) {
 851                         wcn36xx_err("failed to alloc probereq skb\n");
 852                         goto out;
 853                 }
 854
 855                 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
 856                 dev_kfree_skb(skb);
 857         }
 858
 859         if (changed & BSS_CHANGED_BEACON_ENABLED ||
 860             changed & BSS_CHANGED_BEACON) {
 861                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 862                             "mac bss changed beacon enabled %d\n",
 863                             bss_conf->enable_beacon);
 864
 865                 if (bss_conf->enable_beacon) {
 866                         vif_priv->dtim_period = bss_conf->dtim_period;
 867                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 868                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 869                                                vif->addr, false);
 870                         skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
 871                                                        &tim_len);
 872                         if (!skb) {
 873                                 wcn36xx_err("failed to alloc beacon skb\n");
 874                                 goto out;
 875                         }
 876                         wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
 877                         dev_kfree_skb(skb);
 878
 879                         if (vif->type == NL80211_IFTYPE_ADHOC ||
 880                             vif->type == NL80211_IFTYPE_MESH_POINT)
 881                                 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
 882                         else
 883                                 link_state = WCN36XX_HAL_LINK_AP_STATE;
 884
 885                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 886                                                 link_state);
 887                 } else {
 888                         wcn36xx_smd_delete_bss(wcn, vif);
 889                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 890                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 891                 }
 892         }
 893 out:
 894
 895         mutex_unlock(&wcn->conf_mutex);
 896
 897         return;
 898 }
 899
 900 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
 901 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 902 {
 903         struct wcn36xx *wcn = hw->priv;
 904         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
 905
 906         mutex_lock(&wcn->conf_mutex);
 907         wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
 908         mutex_unlock(&wcn->conf_mutex);
 909
 910         return 0;
 911 }
 912
 913 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
 914                                      struct ieee80211_vif *vif)
 915 {
 916         struct wcn36xx *wcn = hw->priv;
 917         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 918         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
 919
 920         mutex_lock(&wcn->conf_mutex);
 921
 922         list_del(&vif_priv->list);
 923         wcn36xx_smd_delete_sta_self(wcn, vif->addr);
 924
 925         mutex_unlock(&wcn->conf_mutex);
 926 }
 927
 928 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
 929                                  struct ieee80211_vif *vif)
 930 {
 931         struct wcn36xx *wcn = hw->priv;
 932         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 933
 934         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
 935                     vif, vif->type);
 936
 937         if (!(NL80211_IFTYPE_STATION == vif->type ||
 938               NL80211_IFTYPE_AP == vif->type ||
 939               NL80211_IFTYPE_ADHOC == vif->type ||
 940               NL80211_IFTYPE_MESH_POINT == vif->type)) {
 941                 wcn36xx_warn("Unsupported interface type requested: %d\n",
 942                              vif->type);
 943                 return -EOPNOTSUPP;
 944         }
 945
 946         mutex_lock(&wcn->conf_mutex);
 947
 948         list_add(&vif_priv->list, &wcn->vif_list);
 949         wcn36xx_smd_add_sta_self(wcn, vif);
 950
 951         mutex_unlock(&wcn->conf_mutex);
 952
 953         return 0;
 954 }
 955
 956 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 957                            struct ieee80211_sta *sta)
 958 {
 959         struct wcn36xx *wcn = hw->priv;
 960         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 961         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 962         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
 963                     vif, sta->addr);
 964
 965         mutex_lock(&wcn->conf_mutex);
 966
 967         spin_lock_init(&sta_priv->ampdu_lock);
 968         sta_priv->vif = vif_priv;
 969         /*
 970          * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
 971          * at this stage AID is not available yet.
 972          */
 973         if (NL80211_IFTYPE_STATION != vif->type) {
 974                 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 975                 sta_priv->aid = sta->aid;
 976                 wcn36xx_smd_config_sta(wcn, vif, sta);
 977         }
 978
 979         mutex_unlock(&wcn->conf_mutex);
 980
 981         return 0;
 982 }
 983
 984 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
 985                               struct ieee80211_vif *vif,
 986                               struct ieee80211_sta *sta)
 987 {
 988         struct wcn36xx *wcn = hw->priv;
 989         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 990
 991         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
 992                     vif, sta->addr, sta_priv->sta_index);
 993
 994         mutex_lock(&wcn->conf_mutex);
 995
 996         wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
 997         sta_priv->vif = NULL;
 998
 999         mutex_unlock(&wcn->conf_mutex);
1000
1001         return 0;
1002 }
1003
1004 #ifdef CONFIG_PM
1005
1006 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
1007 {
1008         struct wcn36xx *wcn = hw->priv;
1009
1010         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
1011
1012         flush_workqueue(wcn->hal_ind_wq);
1013         wcn36xx_smd_set_power_params(wcn, true);
1014         return 0;
1015 }
1016
1017 static int wcn36xx_resume(struct ieee80211_hw *hw)
1018 {
1019         struct wcn36xx *wcn = hw->priv;
1020
1021         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
1022
1023         flush_workqueue(wcn->hal_ind_wq);
1024         wcn36xx_smd_set_power_params(wcn, false);
1025         return 0;
1026 }
1027
1028 #endif
1029
1030 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
1031                     struct ieee80211_vif *vif,
1032                     struct ieee80211_ampdu_params *params)
1033 {
1034         struct wcn36xx *wcn = hw->priv;
1035         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta);
1036         struct ieee80211_sta *sta = params->sta;
1037         enum ieee80211_ampdu_mlme_action action = params->action;
1038         u16 tid = params->tid;
1039         u16 *ssn = &params->ssn;
1040
1041         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
1042                     action, tid);
1043
1044         mutex_lock(&wcn->conf_mutex);
1045
1046         switch (action) {
1047         case IEEE80211_AMPDU_RX_START:
1048                 sta_priv->tid = tid;
1049                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
1050                         get_sta_index(vif, sta_priv));
1051                 wcn36xx_smd_add_ba(wcn);
1052                 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv));
1053                 break;
1054         case IEEE80211_AMPDU_RX_STOP:
1055                 wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
1056                 break;
1057         case IEEE80211_AMPDU_TX_START:
1058                 spin_lock_bh(&sta_priv->ampdu_lock);
1059                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
1060                 spin_unlock_bh(&sta_priv->ampdu_lock);
1061
1062                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1063                 break;
1064         case IEEE80211_AMPDU_TX_OPERATIONAL:
1065                 spin_lock_bh(&sta_priv->ampdu_lock);
1066                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
1067                 spin_unlock_bh(&sta_priv->ampdu_lock);
1068
1069                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
1070                         get_sta_index(vif, sta_priv));
1071                 break;
1072         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1073         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1074         case IEEE80211_AMPDU_TX_STOP_CONT:
1075                 spin_lock_bh(&sta_priv->ampdu_lock);
1076                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
1077                 spin_unlock_bh(&sta_priv->ampdu_lock);
1078
1079                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1080                 break;
1081         default:
1082                 wcn36xx_err("Unknown AMPDU action\n");
1083         }
1084
1085         mutex_unlock(&wcn->conf_mutex);
1086
1087         return 0;
1088 }
1089
1090 static const struct ieee80211_ops wcn36xx_ops = {
1091         .start                  = wcn36xx_start,
1092         .stop                   = wcn36xx_stop,
1093         .add_interface          = wcn36xx_add_interface,
1094         .remove_interface       = wcn36xx_remove_interface,
1095 #ifdef CONFIG_PM
1096         .suspend                = wcn36xx_suspend,
1097         .resume                 = wcn36xx_resume,
1098 #endif
1099         .config                 = wcn36xx_config,
1100         .prepare_multicast      = wcn36xx_prepare_multicast,
1101         .configure_filter       = wcn36xx_configure_filter,
1102         .tx                     = wcn36xx_tx,
1103         .set_key                = wcn36xx_set_key,
1104         .hw_scan                = wcn36xx_hw_scan,
1105         .cancel_hw_scan         = wcn36xx_cancel_hw_scan,
1106         .bss_info_changed       = wcn36xx_bss_info_changed,
1107         .set_rts_threshold      = wcn36xx_set_rts_threshold,
1108         .sta_add                = wcn36xx_sta_add,
1109         .sta_remove             = wcn36xx_sta_remove,
1110         .ampdu_action           = wcn36xx_ampdu_action,
1111 };
1112
1113 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
1114 {
1115         int ret = 0;
1116
1117         static const u32 cipher_suites[] = {
1118                 WLAN_CIPHER_SUITE_WEP40,
1119                 WLAN_CIPHER_SUITE_WEP104,
1120                 WLAN_CIPHER_SUITE_TKIP,
1121                 WLAN_CIPHER_SUITE_CCMP,
1122         };
1123
1124         ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
1125         ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
1126         ieee80211_hw_set(wcn->hw, CONNECTION_MONITOR);
1127         ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
1128         ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
1129         ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
1130         ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS);
1131
1132         wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1133                 BIT(NL80211_IFTYPE_AP) |
1134                 BIT(NL80211_IFTYPE_ADHOC) |
1135                 BIT(NL80211_IFTYPE_MESH_POINT);
1136
1137         wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz;
1138         if (wcn->rf_id != RF_IRIS_WCN3620)
1139                 wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz;
1140
1141         wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS;
1142         wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN;
1143
1144         wcn->hw->wiphy->cipher_suites = cipher_suites;
1145         wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1146
1147         wcn->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1148
1149 #ifdef CONFIG_PM
1150         wcn->hw->wiphy->wowlan = &wowlan_support;
1151 #endif
1152
1153         wcn->hw->max_listen_interval = 200;
1154
1155         wcn->hw->queues = 4;
1156
1157         SET_IEEE80211_DEV(wcn->hw, wcn->dev);
1158
1159         wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
1160         wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
1161
1162         wiphy_ext_feature_set(wcn->hw->wiphy,
1163                               NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1164
1165         return ret;
1166 }
1167
1168 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
1169                                           struct platform_device *pdev)
1170 {
1171         struct device_node *mmio_node;
1172         struct device_node *iris_node;
1173         struct resource *res;
1174         int index;
1175         int ret;
1176
1177         /* Set TX IRQ */
1178         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "tx");
1179         if (!res) {
1180                 wcn36xx_err("failed to get tx_irq\n");
1181                 return -ENOENT;
1182         }
1183         wcn->tx_irq = res->start;
1184
1185         /* Set RX IRQ */
1186         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "rx");
1187         if (!res) {
1188                 wcn36xx_err("failed to get rx_irq\n");
1189                 return -ENOENT;
1190         }
1191         wcn->rx_irq = res->start;
1192
1193         /* Acquire SMSM tx enable handle */
1194         wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev,
1195                         "tx-enable", &wcn->tx_enable_state_bit);
1196         if (IS_ERR(wcn->tx_enable_state)) {
1197                 wcn36xx_err("failed to get tx-enable state\n");
1198                 return PTR_ERR(wcn->tx_enable_state);
1199         }
1200
1201         /* Acquire SMSM tx rings empty handle */
1202         wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev,
1203                         "tx-rings-empty", &wcn->tx_rings_empty_state_bit);
1204         if (IS_ERR(wcn->tx_rings_empty_state)) {
1205                 wcn36xx_err("failed to get tx-rings-empty state\n");
1206                 return PTR_ERR(wcn->tx_rings_empty_state);
1207         }
1208
1209         mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0);
1210         if (!mmio_node) {
1211                 wcn36xx_err("failed to acquire qcom,mmio reference\n");
1212                 return -EINVAL;
1213         }
1214
1215         wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto");
1216
1217         /* Map the CCU memory */
1218         index = of_property_match_string(mmio_node, "reg-names", "ccu");
1219         wcn->ccu_base = of_iomap(mmio_node, index);
1220         if (!wcn->ccu_base) {
1221                 wcn36xx_err("failed to map ccu memory\n");
1222                 ret = -ENOMEM;
1223                 goto put_mmio_node;
1224         }
1225
1226         /* Map the DXE memory */
1227         index = of_property_match_string(mmio_node, "reg-names", "dxe");
1228         wcn->dxe_base = of_iomap(mmio_node, index);
1229         if (!wcn->dxe_base) {
1230                 wcn36xx_err("failed to map dxe memory\n");
1231                 ret = -ENOMEM;
1232                 goto unmap_ccu;
1233         }
1234
1235         /* External RF module */
1236         iris_node = of_get_child_by_name(mmio_node, "iris");
1237         if (iris_node) {
1238                 if (of_device_is_compatible(iris_node, "qcom,wcn3620"))
1239                         wcn->rf_id = RF_IRIS_WCN3620;
1240                 of_node_put(iris_node);
1241         }
1242
1243         of_node_put(mmio_node);
1244         return 0;
1245
1246 unmap_ccu:
1247         iounmap(wcn->ccu_base);
1248 put_mmio_node:
1249         of_node_put(mmio_node);
1250         return ret;
1251 }
1252
1253 static int wcn36xx_probe(struct platform_device *pdev)
1254 {
1255         struct ieee80211_hw *hw;
1256         struct wcn36xx *wcn;
1257         void *wcnss;
1258         int ret;
1259         const u8 *addr;
1260
1261         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1262
1263         wcnss = dev_get_drvdata(pdev->dev.parent);
1264
1265         hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1266         if (!hw) {
1267                 wcn36xx_err("failed to alloc hw\n");
1268                 ret = -ENOMEM;
1269                 goto out_err;
1270         }
1271         platform_set_drvdata(pdev, hw);
1272         wcn = hw->priv;
1273         wcn->hw = hw;
1274         wcn->dev = &pdev->dev;
1275         mutex_init(&wcn->conf_mutex);
1276         mutex_init(&wcn->hal_mutex);
1277         mutex_init(&wcn->scan_lock);
1278
1279         INIT_WORK(&wcn->scan_work, wcn36xx_hw_scan_worker);
1280
1281         wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw);
1282         if (IS_ERR(wcn->smd_channel)) {
1283                 wcn36xx_err("failed to open WLAN_CTRL channel\n");
1284                 ret = PTR_ERR(wcn->smd_channel);
1285                 goto out_wq;
1286         }
1287
1288         addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret);
1289         if (addr && ret != ETH_ALEN) {
1290                 wcn36xx_err("invalid local-mac-address\n");
1291                 ret = -EINVAL;
1292                 goto out_wq;
1293         } else if (addr) {
1294                 wcn36xx_info("mac address: %pM\n", addr);
1295                 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1296         }
1297
1298         ret = wcn36xx_platform_get_resources(wcn, pdev);
1299         if (ret)
1300                 goto out_wq;
1301
1302         wcn36xx_init_ieee80211(wcn);
1303         ret = ieee80211_register_hw(wcn->hw);
1304         if (ret)
1305                 goto out_unmap;
1306
1307         return 0;
1308
1309 out_unmap:
1310         iounmap(wcn->ccu_base);
1311         iounmap(wcn->dxe_base);
1312 out_wq:
1313         ieee80211_free_hw(hw);
1314 out_err:
1315         return ret;
1316 }
1317
1318 static int wcn36xx_remove(struct platform_device *pdev)
1319 {
1320         struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1321         struct wcn36xx *wcn = hw->priv;
1322         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1323
1324         release_firmware(wcn->nv);
1325
1326         ieee80211_unregister_hw(hw);
1327
1328         qcom_smem_state_put(wcn->tx_enable_state);
1329         qcom_smem_state_put(wcn->tx_rings_empty_state);
1330
1331         rpmsg_destroy_ept(wcn->smd_channel);
1332
1333         iounmap(wcn->dxe_base);
1334         iounmap(wcn->ccu_base);
1335
1336         mutex_destroy(&wcn->hal_mutex);
1337         ieee80211_free_hw(hw);
1338
1339         return 0;
1340 }
1341
1342 static const struct of_device_id wcn36xx_of_match[] = {
1343         { .compatible = "qcom,wcnss-wlan" },
1344         {}
1345 };
1346 MODULE_DEVICE_TABLE(of, wcn36xx_of_match);
1347
1348 static struct platform_driver wcn36xx_driver = {
1349         .probe      = wcn36xx_probe,
1350         .remove     = wcn36xx_remove,
1351         .driver         = {
1352                 .name   = "wcn36xx",
1353                 .of_match_table = wcn36xx_of_match,
1354         },
1355 };
1356
1357 module_platform_driver(wcn36xx_driver);
1358
1359 MODULE_LICENSE("Dual BSD/GPL");
1360 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1361 MODULE_FIRMWARE(WLAN_NV_FILE);