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