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 #include "testmode.h"
  30
  31 unsigned int wcn36xx_dbg_mask;
  32 module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644);
  33 MODULE_PARM_DESC(debug_mask, "Debugging mask");
  34
  35 #define CHAN2G(_freq, _idx) { \
  36         .band = NL80211_BAND_2GHZ, \
  37         .center_freq = (_freq), \
  38         .hw_value = (_idx), \
  39         .max_power = 25, \
  40 }
  41
  42 #define CHAN5G(_freq, _idx) { \
  43         .band = NL80211_BAND_5GHZ, \
  44         .center_freq = (_freq), \
  45         .hw_value = (_idx), \
  46         .max_power = 25, \
  47 }
  48
  49 /* The wcn firmware expects channel values to matching
  50  * their mnemonic values. So use these for .hw_value. */
  51 static struct ieee80211_channel wcn_2ghz_channels[] = {
  52         CHAN2G(2412, 1), /* Channel 1 */
  53         CHAN2G(2417, 2), /* Channel 2 */
  54         CHAN2G(2422, 3), /* Channel 3 */
  55         CHAN2G(2427, 4), /* Channel 4 */
  56         CHAN2G(2432, 5), /* Channel 5 */
  57         CHAN2G(2437, 6), /* Channel 6 */
  58         CHAN2G(2442, 7), /* Channel 7 */
  59         CHAN2G(2447, 8), /* Channel 8 */
  60         CHAN2G(2452, 9), /* Channel 9 */
  61         CHAN2G(2457, 10), /* Channel 10 */
  62         CHAN2G(2462, 11), /* Channel 11 */
  63         CHAN2G(2467, 12), /* Channel 12 */
  64         CHAN2G(2472, 13), /* Channel 13 */
  65         CHAN2G(2484, 14)  /* Channel 14 */
  66
  67 };
  68
  69 static struct ieee80211_channel wcn_5ghz_channels[] = {
  70         CHAN5G(5180, 36),
  71         CHAN5G(5200, 40),
  72         CHAN5G(5220, 44),
  73         CHAN5G(5240, 48),
  74         CHAN5G(5260, 52),
  75         CHAN5G(5280, 56),
  76         CHAN5G(5300, 60),
  77         CHAN5G(5320, 64),
  78         CHAN5G(5500, 100),
  79         CHAN5G(5520, 104),
  80         CHAN5G(5540, 108),
  81         CHAN5G(5560, 112),
  82         CHAN5G(5580, 116),
  83         CHAN5G(5600, 120),
  84         CHAN5G(5620, 124),
  85         CHAN5G(5640, 128),
  86         CHAN5G(5660, 132),
  87         CHAN5G(5700, 140),
  88         CHAN5G(5745, 149),
  89         CHAN5G(5765, 153),
  90         CHAN5G(5785, 157),
  91         CHAN5G(5805, 161),
  92         CHAN5G(5825, 165)
  93 };
  94
  95 #define RATE(_bitrate, _hw_rate, _flags) { \
  96         .bitrate        = (_bitrate),                   \
  97         .flags          = (_flags),                     \
  98         .hw_value       = (_hw_rate),                   \
  99         .hw_value_short = (_hw_rate)  \
 100 }
 101
 102 static struct ieee80211_rate wcn_2ghz_rates[] = {
 103         RATE(10, HW_RATE_INDEX_1MBPS, 0),
 104         RATE(20, HW_RATE_INDEX_2MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
 105         RATE(55, HW_RATE_INDEX_5_5MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
 106         RATE(110, HW_RATE_INDEX_11MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
 107         RATE(60, HW_RATE_INDEX_6MBPS, 0),
 108         RATE(90, HW_RATE_INDEX_9MBPS, 0),
 109         RATE(120, HW_RATE_INDEX_12MBPS, 0),
 110         RATE(180, HW_RATE_INDEX_18MBPS, 0),
 111         RATE(240, HW_RATE_INDEX_24MBPS, 0),
 112         RATE(360, HW_RATE_INDEX_36MBPS, 0),
 113         RATE(480, HW_RATE_INDEX_48MBPS, 0),
 114         RATE(540, HW_RATE_INDEX_54MBPS, 0)
 115 };
 116
 117 static struct ieee80211_rate wcn_5ghz_rates[] = {
 118         RATE(60, HW_RATE_INDEX_6MBPS, 0),
 119         RATE(90, HW_RATE_INDEX_9MBPS, 0),
 120         RATE(120, HW_RATE_INDEX_12MBPS, 0),
 121         RATE(180, HW_RATE_INDEX_18MBPS, 0),
 122         RATE(240, HW_RATE_INDEX_24MBPS, 0),
 123         RATE(360, HW_RATE_INDEX_36MBPS, 0),
 124         RATE(480, HW_RATE_INDEX_48MBPS, 0),
 125         RATE(540, HW_RATE_INDEX_54MBPS, 0)
 126 };
 127
 128 static struct ieee80211_supported_band wcn_band_2ghz = {
 129         .channels       = wcn_2ghz_channels,
 130         .n_channels     = ARRAY_SIZE(wcn_2ghz_channels),
 131         .bitrates       = wcn_2ghz_rates,
 132         .n_bitrates     = ARRAY_SIZE(wcn_2ghz_rates),
 133         .ht_cap         = {
 134                 .cap =  IEEE80211_HT_CAP_GRN_FLD |
 135                         IEEE80211_HT_CAP_SGI_20 |
 136                         IEEE80211_HT_CAP_DSSSCCK40 |
 137                         IEEE80211_HT_CAP_LSIG_TXOP_PROT |
 138                         IEEE80211_HT_CAP_SGI_40 |
 139                         IEEE80211_HT_CAP_SUP_WIDTH_20_40,
 140                 .ht_supported = true,
 141                 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 142                 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
 143                 .mcs = {
 144                         .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
 145                         .rx_highest = cpu_to_le16(72),
 146                         .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
 147                 }
 148         }
 149 };
 150
 151 static struct ieee80211_supported_band wcn_band_5ghz = {
 152         .channels       = wcn_5ghz_channels,
 153         .n_channels     = ARRAY_SIZE(wcn_5ghz_channels),
 154         .bitrates       = wcn_5ghz_rates,
 155         .n_bitrates     = ARRAY_SIZE(wcn_5ghz_rates),
 156         .ht_cap         = {
 157                 .cap =  IEEE80211_HT_CAP_GRN_FLD |
 158                         IEEE80211_HT_CAP_SGI_20 |
 159                         IEEE80211_HT_CAP_DSSSCCK40 |
 160                         IEEE80211_HT_CAP_LSIG_TXOP_PROT |
 161                         IEEE80211_HT_CAP_SGI_40 |
 162                         IEEE80211_HT_CAP_SUP_WIDTH_20_40,
 163                 .ht_supported = true,
 164                 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 165                 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
 166                 .mcs = {
 167                         .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
 168                         .rx_highest = cpu_to_le16(150),
 169                         .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
 170                 }
 171         }
 172 };
 173
 174 #ifdef CONFIG_PM
 175
 176 static const struct wiphy_wowlan_support wowlan_support = {
 177         .flags = WIPHY_WOWLAN_ANY
 178 };
 179
 180 #endif
 181
 182 static inline u8 get_sta_index(struct ieee80211_vif *vif,
 183                                struct wcn36xx_sta *sta_priv)
 184 {
 185         return NL80211_IFTYPE_STATION == vif->type ?
 186                sta_priv->bss_sta_index :
 187                sta_priv->sta_index;
 188 }
 189
 190 static const char * const wcn36xx_caps_names[] = {
 191         "MCC",                          /* 0 */
 192         "P2P",                          /* 1 */
 193         "DOT11AC",                      /* 2 */
 194         "SLM_SESSIONIZATION",           /* 3 */
 195         "DOT11AC_OPMODE",               /* 4 */
 196         "SAP32STA",                     /* 5 */
 197         "TDLS",                         /* 6 */
 198         "P2P_GO_NOA_DECOUPLE_INIT_SCAN",/* 7 */
 199         "WLANACTIVE_OFFLOAD",           /* 8 */
 200         "BEACON_OFFLOAD",               /* 9 */
 201         "SCAN_OFFLOAD",                 /* 10 */
 202         "ROAM_OFFLOAD",                 /* 11 */
 203         "BCN_MISS_OFFLOAD",             /* 12 */
 204         "STA_POWERSAVE",                /* 13 */
 205         "STA_ADVANCED_PWRSAVE",         /* 14 */
 206         "AP_UAPSD",                     /* 15 */
 207         "AP_DFS",                       /* 16 */
 208         "BLOCKACK",                     /* 17 */
 209         "PHY_ERR",                      /* 18 */
 210         "BCN_FILTER",                   /* 19 */
 211         "RTT",                          /* 20 */
 212         "RATECTRL",                     /* 21 */
 213         "WOW",                          /* 22 */
 214         "WLAN_ROAM_SCAN_OFFLOAD",       /* 23 */
 215         "SPECULATIVE_PS_POLL",          /* 24 */
 216         "SCAN_SCH",                     /* 25 */
 217         "IBSS_HEARTBEAT_OFFLOAD",       /* 26 */
 218         "WLAN_SCAN_OFFLOAD",            /* 27 */
 219         "WLAN_PERIODIC_TX_PTRN",        /* 28 */
 220         "ADVANCE_TDLS",                 /* 29 */
 221         "BATCH_SCAN",                   /* 30 */
 222         "FW_IN_TX_PATH",                /* 31 */
 223         "EXTENDED_NSOFFLOAD_SLOT",      /* 32 */
 224         "CH_SWITCH_V1",                 /* 33 */
 225         "HT40_OBSS_SCAN",               /* 34 */
 226         "UPDATE_CHANNEL_LIST",          /* 35 */
 227         "WLAN_MCADDR_FLT",              /* 36 */
 228         "WLAN_CH144",                   /* 37 */
 229         "NAN",                          /* 38 */
 230         "TDLS_SCAN_COEXISTENCE",        /* 39 */
 231         "LINK_LAYER_STATS_MEAS",        /* 40 */
 232         "MU_MIMO",                      /* 41 */
 233         "EXTENDED_SCAN",                /* 42 */
 234         "DYNAMIC_WMM_PS",               /* 43 */
 235         "MAC_SPOOFED_SCAN",             /* 44 */
 236         "BMU_ERROR_GENERIC_RECOVERY",   /* 45 */
 237         "DISA",                         /* 46 */
 238         "FW_STATS",                     /* 47 */
 239         "WPS_PRBRSP_TMPL",              /* 48 */
 240         "BCN_IE_FLT_DELTA",             /* 49 */
 241         "TDLS_OFF_CHANNEL",             /* 51 */
 242         "RTT3",                         /* 52 */
 243         "MGMT_FRAME_LOGGING",           /* 53 */
 244         "ENHANCED_TXBD_COMPLETION",     /* 54 */
 245         "LOGGING_ENHANCEMENT",          /* 55 */
 246         "EXT_SCAN_ENHANCED",            /* 56 */
 247         "MEMORY_DUMP_SUPPORTED",        /* 57 */
 248         "PER_PKT_STATS_SUPPORTED",      /* 58 */
 249         "EXT_LL_STAT",                  /* 60 */
 250         "WIFI_CONFIG",                  /* 61 */
 251         "ANTENNA_DIVERSITY_SELECTION",  /* 62 */
 252 };
 253
 254 static const char *wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x)
 255 {
 256         if (x >= ARRAY_SIZE(wcn36xx_caps_names))
 257                 return "UNKNOWN";
 258         return wcn36xx_caps_names[x];
 259 }
 260
 261 static void wcn36xx_feat_caps_info(struct wcn36xx *wcn)
 262 {
 263         int i;
 264
 265         for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
 266                 if (get_feat_caps(wcn->fw_feat_caps, i))
 267                         wcn36xx_dbg(WCN36XX_DBG_MAC, "FW Cap %s\n", wcn36xx_get_cap_name(i));
 268         }
 269 }
 270
 271 static int wcn36xx_start(struct ieee80211_hw *hw)
 272 {
 273         struct wcn36xx *wcn = hw->priv;
 274         int ret;
 275
 276         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
 277
 278         /* SMD initialization */
 279         ret = wcn36xx_smd_open(wcn);
 280         if (ret) {
 281                 wcn36xx_err("Failed to open smd channel: %d\n", ret);
 282                 goto out_err;
 283         }
 284
 285         /* Allocate memory pools for Mgmt BD headers and Data BD headers */
 286         ret = wcn36xx_dxe_allocate_mem_pools(wcn);
 287         if (ret) {
 288                 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret);
 289                 goto out_smd_close;
 290         }
 291
 292         ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
 293         if (ret) {
 294                 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
 295                 goto out_free_dxe_pool;
 296         }
 297
 298         ret = wcn36xx_smd_load_nv(wcn);
 299         if (ret) {
 300                 wcn36xx_err("Failed to push NV to chip\n");
 301                 goto out_free_dxe_ctl;
 302         }
 303
 304         ret = wcn36xx_smd_start(wcn);
 305         if (ret) {
 306                 wcn36xx_err("Failed to start chip\n");
 307                 goto out_free_dxe_ctl;
 308         }
 309
 310         if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
 311                 ret = wcn36xx_smd_feature_caps_exchange(wcn);
 312                 if (ret)
 313                         wcn36xx_warn("Exchange feature caps failed\n");
 314                 else
 315                         wcn36xx_feat_caps_info(wcn);
 316         }
 317
 318         /* DMA channel initialization */
 319         ret = wcn36xx_dxe_init(wcn);
 320         if (ret) {
 321                 wcn36xx_err("DXE init failed\n");
 322                 goto out_smd_stop;
 323         }
 324
 325         wcn36xx_debugfs_init(wcn);
 326
 327         INIT_LIST_HEAD(&wcn->vif_list);
 328         spin_lock_init(&wcn->dxe_lock);
 329
 330         return 0;
 331
 332 out_smd_stop:
 333         wcn36xx_smd_stop(wcn);
 334 out_free_dxe_ctl:
 335         wcn36xx_dxe_free_ctl_blks(wcn);
 336 out_free_dxe_pool:
 337         wcn36xx_dxe_free_mem_pools(wcn);
 338 out_smd_close:
 339         wcn36xx_smd_close(wcn);
 340 out_err:
 341         return ret;
 342 }
 343
 344 static void wcn36xx_stop(struct ieee80211_hw *hw)
 345 {
 346         struct wcn36xx *wcn = hw->priv;
 347
 348         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
 349
 350         cancel_work_sync(&wcn->scan_work);
 351
 352         mutex_lock(&wcn->scan_lock);
 353         if (wcn->scan_req) {
 354                 struct cfg80211_scan_info scan_info = {
 355                         .aborted = true,
 356                 };
 357
 358                 ieee80211_scan_completed(wcn->hw, &scan_info);
 359         }
 360         wcn->scan_req = NULL;
 361         mutex_unlock(&wcn->scan_lock);
 362
 363         wcn36xx_debugfs_exit(wcn);
 364         wcn36xx_smd_stop(wcn);
 365         wcn36xx_dxe_deinit(wcn);
 366         wcn36xx_smd_close(wcn);
 367
 368         wcn36xx_dxe_free_mem_pools(wcn);
 369         wcn36xx_dxe_free_ctl_blks(wcn);
 370 }
 371
 372 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
 373 {
 374         struct wcn36xx *wcn = hw->priv;
 375         struct ieee80211_vif *vif = NULL;
 376         struct wcn36xx_vif *tmp;
 377
 378         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
 379
 380         mutex_lock(&wcn->conf_mutex);
 381
 382         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 383                 int ch = WCN36XX_HW_CHANNEL(wcn);
 384                 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
 385                             ch);
 386                 list_for_each_entry(tmp, &wcn->vif_list, list) {
 387                         vif = wcn36xx_priv_to_vif(tmp);
 388                         wcn36xx_smd_switch_channel(wcn, vif, ch);
 389                 }
 390         }
 391
 392         if (changed & IEEE80211_CONF_CHANGE_PS) {
 393                 list_for_each_entry(tmp, &wcn->vif_list, list) {
 394                         vif = wcn36xx_priv_to_vif(tmp);
 395                         if (hw->conf.flags & IEEE80211_CONF_PS) {
 396                                 if (vif->bss_conf.ps) /* ps allowed ? */
 397                                         wcn36xx_pmc_enter_bmps_state(wcn, vif);
 398                         } else {
 399                                 wcn36xx_pmc_exit_bmps_state(wcn, vif);
 400                         }
 401                 }
 402         }
 403
 404         mutex_unlock(&wcn->conf_mutex);
 405
 406         return 0;
 407 }
 408
 409 static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
 410                                      unsigned int changed,
 411                                      unsigned int *total, u64 multicast)
 412 {
 413         struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
 414         struct wcn36xx *wcn = hw->priv;
 415         struct wcn36xx_vif *tmp;
 416         struct ieee80211_vif *vif = NULL;
 417
 418         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
 419
 420         mutex_lock(&wcn->conf_mutex);
 421
 422         *total &= FIF_ALLMULTI;
 423
 424         fp = (void *)(unsigned long)multicast;
 425         list_for_each_entry(tmp, &wcn->vif_list, list) {
 426                 vif = wcn36xx_priv_to_vif(tmp);
 427
 428                 /* FW handles MC filtering only when connected as STA */
 429                 if (*total & FIF_ALLMULTI)
 430                         wcn36xx_smd_set_mc_list(wcn, vif, NULL);
 431                 else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc)
 432                         wcn36xx_smd_set_mc_list(wcn, vif, fp);
 433         }
 434
 435         mutex_unlock(&wcn->conf_mutex);
 436         kfree(fp);
 437 }
 438
 439 static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw,
 440                                      struct netdev_hw_addr_list *mc_list)
 441 {
 442         struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
 443         struct netdev_hw_addr *ha;
 444
 445         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n");
 446         fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
 447         if (!fp) {
 448                 wcn36xx_err("Out of memory setting filters.\n");
 449                 return 0;
 450         }
 451
 452         fp->mc_addr_count = 0;
 453         /* update multicast filtering parameters */
 454         if (netdev_hw_addr_list_count(mc_list) <=
 455             WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) {
 456                 netdev_hw_addr_list_for_each(ha, mc_list) {
 457                         memcpy(fp->mc_addr[fp->mc_addr_count],
 458                                         ha->addr, ETH_ALEN);
 459                         fp->mc_addr_count++;
 460                 }
 461         }
 462
 463         return (u64)(unsigned long)fp;
 464 }
 465
 466 static void wcn36xx_tx(struct ieee80211_hw *hw,
 467                        struct ieee80211_tx_control *control,
 468                        struct sk_buff *skb)
 469 {
 470         struct wcn36xx *wcn = hw->priv;
 471         struct wcn36xx_sta *sta_priv = NULL;
 472
 473         if (control->sta)
 474                 sta_priv = wcn36xx_sta_to_priv(control->sta);
 475
 476         if (wcn36xx_start_tx(wcn, sta_priv, skb))
 477                 ieee80211_free_txskb(wcn->hw, skb);
 478 }
 479
 480 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 481                            struct ieee80211_vif *vif,
 482                            struct ieee80211_sta *sta,
 483                            struct ieee80211_key_conf *key_conf)
 484 {
 485         struct wcn36xx *wcn = hw->priv;
 486         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 487         struct wcn36xx_sta *sta_priv = sta ? wcn36xx_sta_to_priv(sta) : NULL;
 488         int ret = 0;
 489         u8 key[WLAN_MAX_KEY_LEN];
 490
 491         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
 492         wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
 493                     cmd, key_conf->cipher, key_conf->keyidx,
 494                     key_conf->keylen, key_conf->flags);
 495         wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
 496                          key_conf->key,
 497                          key_conf->keylen);
 498
 499         mutex_lock(&wcn->conf_mutex);
 500
 501         switch (key_conf->cipher) {
 502         case WLAN_CIPHER_SUITE_WEP40:
 503                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 504                 break;
 505         case WLAN_CIPHER_SUITE_WEP104:
 506                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP104;
 507                 break;
 508         case WLAN_CIPHER_SUITE_CCMP:
 509                 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
 510                 break;
 511         case WLAN_CIPHER_SUITE_TKIP:
 512                 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
 513                 break;
 514         default:
 515                 wcn36xx_err("Unsupported key type 0x%x\n",
 516                               key_conf->cipher);
 517                 ret = -EOPNOTSUPP;
 518                 goto out;
 519         }
 520
 521         switch (cmd) {
 522         case SET_KEY:
 523                 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
 524                         /*
 525                          * Supplicant is sending key in the wrong order:
 526                          * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
 527                          * but HW expects it to be in the order as described in
 528                          * IEEE 802.11 spec (see chapter 11.7) like this:
 529                          * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
 530                          */
 531                         memcpy(key, key_conf->key, 16);
 532                         memcpy(key + 16, key_conf->key + 24, 8);
 533                         memcpy(key + 24, key_conf->key + 16, 8);
 534                 } else {
 535                         memcpy(key, key_conf->key, key_conf->keylen);
 536                 }
 537
 538                 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
 539                         sta_priv->is_data_encrypted = true;
 540                         /* Reconfigure bss with encrypt_type */
 541                         if (NL80211_IFTYPE_STATION == vif->type)
 542                                 wcn36xx_smd_config_bss(wcn,
 543                                                        vif,
 544                                                        sta,
 545                                                        sta->addr,
 546                                                        true);
 547
 548                         wcn36xx_smd_set_stakey(wcn,
 549                                 vif_priv->encrypt_type,
 550                                 key_conf->keyidx,
 551                                 key_conf->keylen,
 552                                 key,
 553                                 get_sta_index(vif, sta_priv));
 554                 } else {
 555                         wcn36xx_smd_set_bsskey(wcn,
 556                                 vif_priv->encrypt_type,
 557                                 vif_priv->bss_index,
 558                                 key_conf->keyidx,
 559                                 key_conf->keylen,
 560                                 key);
 561
 562                         if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
 563                             (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
 564                                 list_for_each_entry(sta_priv,
 565                                                     &vif_priv->sta_list, list) {
 566                                         sta_priv->is_data_encrypted = true;
 567                                         wcn36xx_smd_set_stakey(wcn,
 568                                                 vif_priv->encrypt_type,
 569                                                 key_conf->keyidx,
 570                                                 key_conf->keylen,
 571                                                 key,
 572                                                 get_sta_index(vif, sta_priv));
 573                                 }
 574                         }
 575                 }
 576                 break;
 577         case DISABLE_KEY:
 578                 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
 579                         if (vif_priv->bss_index != WCN36XX_HAL_BSS_INVALID_IDX)
 580                                 wcn36xx_smd_remove_bsskey(wcn,
 581                                         vif_priv->encrypt_type,
 582                                         vif_priv->bss_index,
 583                                         key_conf->keyidx);
 584
 585                         vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 586                 } else {
 587                         sta_priv->is_data_encrypted = false;
 588                         /* do not remove key if disassociated */
 589                         if (sta_priv->aid)
 590                                 wcn36xx_smd_remove_stakey(wcn,
 591                                         vif_priv->encrypt_type,
 592                                         key_conf->keyidx,
 593                                         get_sta_index(vif, sta_priv));
 594                 }
 595                 break;
 596         default:
 597                 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
 598                 ret = -EOPNOTSUPP;
 599                 goto out;
 600         }
 601
 602 out:
 603         mutex_unlock(&wcn->conf_mutex);
 604
 605         return ret;
 606 }
 607
 608 static void wcn36xx_hw_scan_worker(struct work_struct *work)
 609 {
 610         struct wcn36xx *wcn = container_of(work, struct wcn36xx, scan_work);
 611         struct cfg80211_scan_request *req = wcn->scan_req;
 612         u8 channels[WCN36XX_HAL_PNO_MAX_NETW_CHANNELS_EX];
 613         struct cfg80211_scan_info scan_info = {};
 614         bool aborted = false;
 615         int i;
 616
 617         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 scan %d channels worker\n", req->n_channels);
 618
 619         for (i = 0; i < req->n_channels; i++)
 620                 channels[i] = req->channels[i]->hw_value;
 621
 622         wcn36xx_smd_update_scan_params(wcn, channels, req->n_channels);
 623
 624         wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
 625         for (i = 0; i < req->n_channels; i++) {
 626                 mutex_lock(&wcn->scan_lock);
 627                 aborted = wcn->scan_aborted;
 628                 mutex_unlock(&wcn->scan_lock);
 629
 630                 if (aborted)
 631                         break;
 632
 633                 wcn->scan_freq = req->channels[i]->center_freq;
 634                 wcn->scan_band = req->channels[i]->band;
 635
 636                 wcn36xx_smd_start_scan(wcn, req->channels[i]->hw_value);
 637                 msleep(30);
 638                 wcn36xx_smd_end_scan(wcn, req->channels[i]->hw_value);
 639
 640                 wcn->scan_freq = 0;
 641         }
 642         wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
 643
 644         scan_info.aborted = aborted;
 645         ieee80211_scan_completed(wcn->hw, &scan_info);
 646
 647         mutex_lock(&wcn->scan_lock);
 648         wcn->scan_req = NULL;
 649         mutex_unlock(&wcn->scan_lock);
 650 }
 651
 652 static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
 653                            struct ieee80211_vif *vif,
 654                            struct ieee80211_scan_request *hw_req)
 655 {
 656         struct wcn36xx *wcn = hw->priv;
 657         mutex_lock(&wcn->scan_lock);
 658         if (wcn->scan_req) {
 659                 mutex_unlock(&wcn->scan_lock);
 660                 return -EBUSY;
 661         }
 662
 663         wcn->scan_aborted = false;
 664         wcn->scan_req = &hw_req->req;
 665
 666         mutex_unlock(&wcn->scan_lock);
 667
 668         if (!get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
 669                 /* legacy manual/sw scan */
 670                 schedule_work(&wcn->scan_work);
 671                 return 0;
 672         }
 673
 674         return wcn36xx_smd_start_hw_scan(wcn, vif, &hw_req->req);
 675 }
 676
 677 static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw,
 678                                    struct ieee80211_vif *vif)
 679 {
 680         struct wcn36xx *wcn = hw->priv;
 681
 682         mutex_lock(&wcn->scan_lock);
 683         wcn->scan_aborted = true;
 684         mutex_unlock(&wcn->scan_lock);
 685
 686         if (get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
 687                 /* ieee80211_scan_completed will be called on FW scan
 688                  * indication */
 689                 wcn36xx_smd_stop_hw_scan(wcn);
 690         } else {
 691                 struct cfg80211_scan_info scan_info = {
 692                         .aborted = true,
 693                 };
 694
 695                 cancel_work_sync(&wcn->scan_work);
 696                 ieee80211_scan_completed(wcn->hw, &scan_info);
 697         }
 698 }
 699
 700 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
 701                                          enum nl80211_band band)
 702 {
 703         int i, size;
 704         u16 *rates_table;
 705         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 706         u32 rates = sta->supp_rates[band];
 707
 708         memset(&sta_priv->supported_rates, 0,
 709                 sizeof(sta_priv->supported_rates));
 710         sta_priv->supported_rates.op_rate_mode = STA_11n;
 711
 712         size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
 713         rates_table = sta_priv->supported_rates.dsss_rates;
 714         if (band == NL80211_BAND_2GHZ) {
 715                 for (i = 0; i < size; i++) {
 716                         if (rates & 0x01) {
 717                                 rates_table[i] = wcn_2ghz_rates[i].hw_value;
 718                                 rates = rates >> 1;
 719                         }
 720                 }
 721         }
 722
 723         size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
 724         rates_table = sta_priv->supported_rates.ofdm_rates;
 725         for (i = 0; i < size; i++) {
 726                 if (rates & 0x01) {
 727                         rates_table[i] = wcn_5ghz_rates[i].hw_value;
 728                         rates = rates >> 1;
 729                 }
 730         }
 731
 732         if (sta->ht_cap.ht_supported) {
 733                 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
 734                         sizeof(sta_priv->supported_rates.supported_mcs_set));
 735                 memcpy(sta_priv->supported_rates.supported_mcs_set,
 736                        sta->ht_cap.mcs.rx_mask,
 737                        sizeof(sta->ht_cap.mcs.rx_mask));
 738         }
 739 }
 740 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
 741 {
 742         u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
 743                 HW_RATE_INDEX_6MBPS,
 744                 HW_RATE_INDEX_9MBPS,
 745                 HW_RATE_INDEX_12MBPS,
 746                 HW_RATE_INDEX_18MBPS,
 747                 HW_RATE_INDEX_24MBPS,
 748                 HW_RATE_INDEX_36MBPS,
 749                 HW_RATE_INDEX_48MBPS,
 750                 HW_RATE_INDEX_54MBPS
 751         };
 752         u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
 753                 HW_RATE_INDEX_1MBPS,
 754                 HW_RATE_INDEX_2MBPS,
 755                 HW_RATE_INDEX_5_5MBPS,
 756                 HW_RATE_INDEX_11MBPS
 757         };
 758
 759         rates->op_rate_mode = STA_11n;
 760         memcpy(rates->dsss_rates, dsss_rates,
 761                 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
 762         memcpy(rates->ofdm_rates, ofdm_rates,
 763                 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
 764         rates->supported_mcs_set[0] = 0xFF;
 765 }
 766 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
 767                                      struct ieee80211_vif *vif,
 768                                      struct ieee80211_bss_conf *bss_conf,
 769                                      u32 changed)
 770 {
 771         struct wcn36xx *wcn = hw->priv;
 772         struct sk_buff *skb = NULL;
 773         u16 tim_off, tim_len;
 774         enum wcn36xx_hal_link_state link_state;
 775         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 776
 777         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
 778                     vif, changed);
 779
 780         mutex_lock(&wcn->conf_mutex);
 781
 782         if (changed & BSS_CHANGED_BEACON_INFO) {
 783                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 784                             "mac bss changed dtim period %d\n",
 785                             bss_conf->dtim_period);
 786
 787                 vif_priv->dtim_period = bss_conf->dtim_period;
 788         }
 789
 790         if (changed & BSS_CHANGED_BSSID) {
 791                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
 792                             bss_conf->bssid);
 793
 794                 if (!is_zero_ether_addr(bss_conf->bssid)) {
 795                         vif_priv->is_joining = true;
 796                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 797                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
 798                                                 WCN36XX_HAL_LINK_PREASSOC_STATE);
 799                         wcn36xx_smd_join(wcn, bss_conf->bssid,
 800                                          vif->addr, WCN36XX_HW_CHANNEL(wcn));
 801                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 802                                                bss_conf->bssid, false);
 803                 } else {
 804                         vif_priv->is_joining = false;
 805                         wcn36xx_smd_delete_bss(wcn, vif);
 806                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
 807                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 808                         vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 809                 }
 810         }
 811
 812         if (changed & BSS_CHANGED_SSID) {
 813                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 814                             "mac bss changed ssid\n");
 815                 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
 816                                  bss_conf->ssid, bss_conf->ssid_len);
 817
 818                 vif_priv->ssid.length = bss_conf->ssid_len;
 819                 memcpy(&vif_priv->ssid.ssid,
 820                        bss_conf->ssid,
 821                        bss_conf->ssid_len);
 822         }
 823
 824         if (changed & BSS_CHANGED_ASSOC) {
 825                 vif_priv->is_joining = false;
 826                 if (bss_conf->assoc) {
 827                         struct ieee80211_sta *sta;
 828                         struct wcn36xx_sta *sta_priv;
 829
 830                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 831                                     "mac assoc bss %pM vif %pM AID=%d\n",
 832                                      bss_conf->bssid,
 833                                      vif->addr,
 834                                      bss_conf->aid);
 835
 836                         vif_priv->sta_assoc = true;
 837
 838                         /*
 839                          * Holding conf_mutex ensures mutal exclusion with
 840                          * wcn36xx_sta_remove() and as such ensures that sta
 841                          * won't be freed while we're operating on it. As such
 842                          * we do not need to hold the rcu_read_lock().
 843                          */
 844                         sta = ieee80211_find_sta(vif, bss_conf->bssid);
 845                         if (!sta) {
 846                                 wcn36xx_err("sta %pM is not found\n",
 847                                               bss_conf->bssid);
 848                                 goto out;
 849                         }
 850                         sta_priv = wcn36xx_sta_to_priv(sta);
 851
 852                         wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 853
 854                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
 855                                 vif->addr,
 856                                 WCN36XX_HAL_LINK_POSTASSOC_STATE);
 857                         wcn36xx_smd_config_bss(wcn, vif, sta,
 858                                                bss_conf->bssid,
 859                                                true);
 860                         sta_priv->aid = bss_conf->aid;
 861                         /*
 862                          * config_sta must be called from  because this is the
 863                          * place where AID is available.
 864                          */
 865                         wcn36xx_smd_config_sta(wcn, vif, sta);
 866                 } else {
 867                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 868                                     "disassociated bss %pM vif %pM AID=%d\n",
 869                                     bss_conf->bssid,
 870                                     vif->addr,
 871                                     bss_conf->aid);
 872                         vif_priv->sta_assoc = false;
 873                         wcn36xx_smd_set_link_st(wcn,
 874                                                 bss_conf->bssid,
 875                                                 vif->addr,
 876                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 877                 }
 878         }
 879
 880         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 881                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
 882                 skb = ieee80211_proberesp_get(hw, vif);
 883                 if (!skb) {
 884                         wcn36xx_err("failed to alloc probereq skb\n");
 885                         goto out;
 886                 }
 887
 888                 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
 889                 dev_kfree_skb(skb);
 890         }
 891
 892         if (changed & BSS_CHANGED_BEACON_ENABLED ||
 893             changed & BSS_CHANGED_BEACON) {
 894                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 895                             "mac bss changed beacon enabled %d\n",
 896                             bss_conf->enable_beacon);
 897
 898                 if (bss_conf->enable_beacon) {
 899                         vif_priv->dtim_period = bss_conf->dtim_period;
 900                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 901                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 902                                                vif->addr, false);
 903                         skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
 904                                                        &tim_len);
 905                         if (!skb) {
 906                                 wcn36xx_err("failed to alloc beacon skb\n");
 907                                 goto out;
 908                         }
 909                         wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
 910                         dev_kfree_skb(skb);
 911
 912                         if (vif->type == NL80211_IFTYPE_ADHOC ||
 913                             vif->type == NL80211_IFTYPE_MESH_POINT)
 914                                 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
 915                         else
 916                                 link_state = WCN36XX_HAL_LINK_AP_STATE;
 917
 918                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 919                                                 link_state);
 920                 } else {
 921                         wcn36xx_smd_delete_bss(wcn, vif);
 922                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 923                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 924                 }
 925         }
 926 out:
 927
 928         mutex_unlock(&wcn->conf_mutex);
 929
 930         return;
 931 }
 932
 933 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
 934 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 935 {
 936         struct wcn36xx *wcn = hw->priv;
 937         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
 938
 939         mutex_lock(&wcn->conf_mutex);
 940         wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
 941         mutex_unlock(&wcn->conf_mutex);
 942
 943         return 0;
 944 }
 945
 946 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
 947                                      struct ieee80211_vif *vif)
 948 {
 949         struct wcn36xx *wcn = hw->priv;
 950         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 951         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
 952
 953         mutex_lock(&wcn->conf_mutex);
 954
 955         list_del(&vif_priv->list);
 956         wcn36xx_smd_delete_sta_self(wcn, vif->addr);
 957
 958         mutex_unlock(&wcn->conf_mutex);
 959 }
 960
 961 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
 962                                  struct ieee80211_vif *vif)
 963 {
 964         struct wcn36xx *wcn = hw->priv;
 965         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 966
 967         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
 968                     vif, vif->type);
 969
 970         if (!(NL80211_IFTYPE_STATION == vif->type ||
 971               NL80211_IFTYPE_AP == vif->type ||
 972               NL80211_IFTYPE_ADHOC == vif->type ||
 973               NL80211_IFTYPE_MESH_POINT == vif->type)) {
 974                 wcn36xx_warn("Unsupported interface type requested: %d\n",
 975                              vif->type);
 976                 return -EOPNOTSUPP;
 977         }
 978
 979         mutex_lock(&wcn->conf_mutex);
 980
 981         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 982         INIT_LIST_HEAD(&vif_priv->sta_list);
 983         list_add(&vif_priv->list, &wcn->vif_list);
 984         wcn36xx_smd_add_sta_self(wcn, vif);
 985
 986         mutex_unlock(&wcn->conf_mutex);
 987
 988         return 0;
 989 }
 990
 991 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 992                            struct ieee80211_sta *sta)
 993 {
 994         struct wcn36xx *wcn = hw->priv;
 995         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 996         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 997         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
 998                     vif, sta->addr);
 999
1000         mutex_lock(&wcn->conf_mutex);
1001
1002         spin_lock_init(&sta_priv->ampdu_lock);
1003         sta_priv->vif = vif_priv;
1004         list_add(&sta_priv->list, &vif_priv->sta_list);
1005
1006         /*
1007          * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
1008          * at this stage AID is not available yet.
1009          */
1010         if (NL80211_IFTYPE_STATION != vif->type) {
1011                 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
1012                 sta_priv->aid = sta->aid;
1013                 wcn36xx_smd_config_sta(wcn, vif, sta);
1014         }
1015
1016         mutex_unlock(&wcn->conf_mutex);
1017
1018         return 0;
1019 }
1020
1021 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
1022                               struct ieee80211_vif *vif,
1023                               struct ieee80211_sta *sta)
1024 {
1025         struct wcn36xx *wcn = hw->priv;
1026         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1027
1028         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
1029                     vif, sta->addr, sta_priv->sta_index);
1030
1031         mutex_lock(&wcn->conf_mutex);
1032
1033         list_del(&sta_priv->list);
1034         wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
1035         sta_priv->vif = NULL;
1036
1037         mutex_unlock(&wcn->conf_mutex);
1038
1039         return 0;
1040 }
1041
1042 #ifdef CONFIG_PM
1043
1044 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
1045 {
1046         struct wcn36xx *wcn = hw->priv;
1047
1048         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
1049
1050         flush_workqueue(wcn->hal_ind_wq);
1051         wcn36xx_smd_set_power_params(wcn, true);
1052         return 0;
1053 }
1054
1055 static int wcn36xx_resume(struct ieee80211_hw *hw)
1056 {
1057         struct wcn36xx *wcn = hw->priv;
1058
1059         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
1060
1061         flush_workqueue(wcn->hal_ind_wq);
1062         wcn36xx_smd_set_power_params(wcn, false);
1063         return 0;
1064 }
1065
1066 #endif
1067
1068 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
1069                     struct ieee80211_vif *vif,
1070                     struct ieee80211_ampdu_params *params)
1071 {
1072         struct wcn36xx *wcn = hw->priv;
1073         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta);
1074         struct ieee80211_sta *sta = params->sta;
1075         enum ieee80211_ampdu_mlme_action action = params->action;
1076         u16 tid = params->tid;
1077         u16 *ssn = &params->ssn;
1078
1079         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
1080                     action, tid);
1081
1082         mutex_lock(&wcn->conf_mutex);
1083
1084         switch (action) {
1085         case IEEE80211_AMPDU_RX_START:
1086                 sta_priv->tid = tid;
1087                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
1088                         get_sta_index(vif, sta_priv));
1089                 wcn36xx_smd_add_ba(wcn);
1090                 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv));
1091                 break;
1092         case IEEE80211_AMPDU_RX_STOP:
1093                 wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
1094                 break;
1095         case IEEE80211_AMPDU_TX_START:
1096                 spin_lock_bh(&sta_priv->ampdu_lock);
1097                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
1098                 spin_unlock_bh(&sta_priv->ampdu_lock);
1099
1100                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1101                 break;
1102         case IEEE80211_AMPDU_TX_OPERATIONAL:
1103                 spin_lock_bh(&sta_priv->ampdu_lock);
1104                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
1105                 spin_unlock_bh(&sta_priv->ampdu_lock);
1106
1107                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
1108                         get_sta_index(vif, sta_priv));
1109                 break;
1110         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1111         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1112         case IEEE80211_AMPDU_TX_STOP_CONT:
1113                 spin_lock_bh(&sta_priv->ampdu_lock);
1114                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
1115                 spin_unlock_bh(&sta_priv->ampdu_lock);
1116
1117                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1118                 break;
1119         default:
1120                 wcn36xx_err("Unknown AMPDU action\n");
1121         }
1122
1123         mutex_unlock(&wcn->conf_mutex);
1124
1125         return 0;
1126 }
1127
1128 static const struct ieee80211_ops wcn36xx_ops = {
1129         .start                  = wcn36xx_start,
1130         .stop                   = wcn36xx_stop,
1131         .add_interface          = wcn36xx_add_interface,
1132         .remove_interface       = wcn36xx_remove_interface,
1133 #ifdef CONFIG_PM
1134         .suspend                = wcn36xx_suspend,
1135         .resume                 = wcn36xx_resume,
1136 #endif
1137         .config                 = wcn36xx_config,
1138         .prepare_multicast      = wcn36xx_prepare_multicast,
1139         .configure_filter       = wcn36xx_configure_filter,
1140         .tx                     = wcn36xx_tx,
1141         .set_key                = wcn36xx_set_key,
1142         .hw_scan                = wcn36xx_hw_scan,
1143         .cancel_hw_scan         = wcn36xx_cancel_hw_scan,
1144         .bss_info_changed       = wcn36xx_bss_info_changed,
1145         .set_rts_threshold      = wcn36xx_set_rts_threshold,
1146         .sta_add                = wcn36xx_sta_add,
1147         .sta_remove             = wcn36xx_sta_remove,
1148         .ampdu_action           = wcn36xx_ampdu_action,
1149
1150         CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd)
1151 };
1152
1153 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
1154 {
1155         static const u32 cipher_suites[] = {
1156                 WLAN_CIPHER_SUITE_WEP40,
1157                 WLAN_CIPHER_SUITE_WEP104,
1158                 WLAN_CIPHER_SUITE_TKIP,
1159                 WLAN_CIPHER_SUITE_CCMP,
1160         };
1161
1162         ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
1163         ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
1164         ieee80211_hw_set(wcn->hw, CONNECTION_MONITOR);
1165         ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
1166         ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
1167         ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
1168         ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS);
1169
1170         wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1171                 BIT(NL80211_IFTYPE_AP) |
1172                 BIT(NL80211_IFTYPE_ADHOC) |
1173                 BIT(NL80211_IFTYPE_MESH_POINT);
1174
1175         wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz;
1176         if (wcn->rf_id != RF_IRIS_WCN3620)
1177                 wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz;
1178
1179         wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS;
1180         wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN;
1181
1182         wcn->hw->wiphy->cipher_suites = cipher_suites;
1183         wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1184
1185 #ifdef CONFIG_PM
1186         wcn->hw->wiphy->wowlan = &wowlan_support;
1187 #endif
1188
1189         wcn->hw->max_listen_interval = 200;
1190
1191         wcn->hw->queues = 4;
1192
1193         SET_IEEE80211_DEV(wcn->hw, wcn->dev);
1194
1195         wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
1196         wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
1197
1198         wiphy_ext_feature_set(wcn->hw->wiphy,
1199                               NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1200
1201         return 0;
1202 }
1203
1204 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
1205                                           struct platform_device *pdev)
1206 {
1207         struct device_node *mmio_node;
1208         struct device_node *iris_node;
1209         struct resource *res;
1210         int index;
1211         int ret;
1212
1213         /* Set TX IRQ */
1214         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "tx");
1215         if (!res) {
1216                 wcn36xx_err("failed to get tx_irq\n");
1217                 return -ENOENT;
1218         }
1219         wcn->tx_irq = res->start;
1220
1221         /* Set RX IRQ */
1222         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "rx");
1223         if (!res) {
1224                 wcn36xx_err("failed to get rx_irq\n");
1225                 return -ENOENT;
1226         }
1227         wcn->rx_irq = res->start;
1228
1229         /* Acquire SMSM tx enable handle */
1230         wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev,
1231                         "tx-enable", &wcn->tx_enable_state_bit);
1232         if (IS_ERR(wcn->tx_enable_state)) {
1233                 wcn36xx_err("failed to get tx-enable state\n");
1234                 return PTR_ERR(wcn->tx_enable_state);
1235         }
1236
1237         /* Acquire SMSM tx rings empty handle */
1238         wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev,
1239                         "tx-rings-empty", &wcn->tx_rings_empty_state_bit);
1240         if (IS_ERR(wcn->tx_rings_empty_state)) {
1241                 wcn36xx_err("failed to get tx-rings-empty state\n");
1242                 return PTR_ERR(wcn->tx_rings_empty_state);
1243         }
1244
1245         mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0);
1246         if (!mmio_node) {
1247                 wcn36xx_err("failed to acquire qcom,mmio reference\n");
1248                 return -EINVAL;
1249         }
1250
1251         wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto");
1252
1253         /* Map the CCU memory */
1254         index = of_property_match_string(mmio_node, "reg-names", "ccu");
1255         wcn->ccu_base = of_iomap(mmio_node, index);
1256         if (!wcn->ccu_base) {
1257                 wcn36xx_err("failed to map ccu memory\n");
1258                 ret = -ENOMEM;
1259                 goto put_mmio_node;
1260         }
1261
1262         /* Map the DXE memory */
1263         index = of_property_match_string(mmio_node, "reg-names", "dxe");
1264         wcn->dxe_base = of_iomap(mmio_node, index);
1265         if (!wcn->dxe_base) {
1266                 wcn36xx_err("failed to map dxe memory\n");
1267                 ret = -ENOMEM;
1268                 goto unmap_ccu;
1269         }
1270
1271         /* External RF module */
1272         iris_node = of_get_child_by_name(mmio_node, "iris");
1273         if (iris_node) {
1274                 if (of_device_is_compatible(iris_node, "qcom,wcn3620"))
1275                         wcn->rf_id = RF_IRIS_WCN3620;
1276                 of_node_put(iris_node);
1277         }
1278
1279         of_node_put(mmio_node);
1280         return 0;
1281
1282 unmap_ccu:
1283         iounmap(wcn->ccu_base);
1284 put_mmio_node:
1285         of_node_put(mmio_node);
1286         return ret;
1287 }
1288
1289 static int wcn36xx_probe(struct platform_device *pdev)
1290 {
1291         struct ieee80211_hw *hw;
1292         struct wcn36xx *wcn;
1293         void *wcnss;
1294         int ret;
1295         const u8 *addr;
1296
1297         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1298
1299         wcnss = dev_get_drvdata(pdev->dev.parent);
1300
1301         hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1302         if (!hw) {
1303                 wcn36xx_err("failed to alloc hw\n");
1304                 ret = -ENOMEM;
1305                 goto out_err;
1306         }
1307         platform_set_drvdata(pdev, hw);
1308         wcn = hw->priv;
1309         wcn->hw = hw;
1310         wcn->dev = &pdev->dev;
1311         wcn->first_boot = true;
1312         mutex_init(&wcn->conf_mutex);
1313         mutex_init(&wcn->hal_mutex);
1314         mutex_init(&wcn->scan_lock);
1315
1316         wcn->hal_buf = devm_kmalloc(wcn->dev, WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
1317         if (!wcn->hal_buf) {
1318                 ret = -ENOMEM;
1319                 goto out_wq;
1320         }
1321
1322         ret = dma_set_mask_and_coherent(wcn->dev, DMA_BIT_MASK(32));
1323         if (ret < 0) {
1324                 wcn36xx_err("failed to set DMA mask: %d\n", ret);
1325                 goto out_wq;
1326         }
1327
1328         INIT_WORK(&wcn->scan_work, wcn36xx_hw_scan_worker);
1329
1330         wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw);
1331         if (IS_ERR(wcn->smd_channel)) {
1332                 wcn36xx_err("failed to open WLAN_CTRL channel\n");
1333                 ret = PTR_ERR(wcn->smd_channel);
1334                 goto out_wq;
1335         }
1336
1337         addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret);
1338         if (addr && ret != ETH_ALEN) {
1339                 wcn36xx_err("invalid local-mac-address\n");
1340                 ret = -EINVAL;
1341                 goto out_destroy_ept;
1342         } else if (addr) {
1343                 wcn36xx_info("mac address: %pM\n", addr);
1344                 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1345         }
1346
1347         ret = wcn36xx_platform_get_resources(wcn, pdev);
1348         if (ret)
1349                 goto out_destroy_ept;
1350
1351         wcn36xx_init_ieee80211(wcn);
1352         ret = ieee80211_register_hw(wcn->hw);
1353         if (ret)
1354                 goto out_unmap;
1355
1356         return 0;
1357
1358 out_unmap:
1359         iounmap(wcn->ccu_base);
1360         iounmap(wcn->dxe_base);
1361 out_destroy_ept:
1362         rpmsg_destroy_ept(wcn->smd_channel);
1363 out_wq:
1364         ieee80211_free_hw(hw);
1365 out_err:
1366         return ret;
1367 }
1368
1369 static int wcn36xx_remove(struct platform_device *pdev)
1370 {
1371         struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1372         struct wcn36xx *wcn = hw->priv;
1373         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1374
1375         release_firmware(wcn->nv);
1376
1377         ieee80211_unregister_hw(hw);
1378
1379         qcom_smem_state_put(wcn->tx_enable_state);
1380         qcom_smem_state_put(wcn->tx_rings_empty_state);
1381
1382         rpmsg_destroy_ept(wcn->smd_channel);
1383
1384         iounmap(wcn->dxe_base);
1385         iounmap(wcn->ccu_base);
1386
1387         mutex_destroy(&wcn->hal_mutex);
1388         ieee80211_free_hw(hw);
1389
1390         return 0;
1391 }
1392
1393 static const struct of_device_id wcn36xx_of_match[] = {
1394         { .compatible = "qcom,wcnss-wlan" },
1395         {}
1396 };
1397 MODULE_DEVICE_TABLE(of, wcn36xx_of_match);
1398
1399 static struct platform_driver wcn36xx_driver = {
1400         .probe      = wcn36xx_probe,
1401         .remove     = wcn36xx_remove,
1402         .driver         = {
1403                 .name   = "wcn36xx",
1404                 .of_match_table = wcn36xx_of_match,
1405         },
1406 };
1407
1408 module_platform_driver(wcn36xx_driver);
1409
1410 MODULE_LICENSE("Dual BSD/GPL");
1411 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1412 /*(DEBLOBBED)*/