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                 .ht_supported = true,
 139                 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 140                 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
 141                 .mcs = {
 142                         .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
 143                         .rx_highest = cpu_to_le16(72),
 144                         .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
 145                 }
 146         }
 147 };
 148
 149 static struct ieee80211_supported_band wcn_band_5ghz = {
 150         .channels       = wcn_5ghz_channels,
 151         .n_channels     = ARRAY_SIZE(wcn_5ghz_channels),
 152         .bitrates       = wcn_5ghz_rates,
 153         .n_bitrates     = ARRAY_SIZE(wcn_5ghz_rates),
 154         .ht_cap         = {
 155                 .cap =  IEEE80211_HT_CAP_GRN_FLD |
 156                         IEEE80211_HT_CAP_SGI_20 |
 157                         IEEE80211_HT_CAP_DSSSCCK40 |
 158                         IEEE80211_HT_CAP_LSIG_TXOP_PROT |
 159                         IEEE80211_HT_CAP_SGI_40 |
 160                         IEEE80211_HT_CAP_SUP_WIDTH_20_40,
 161                 .ht_supported = true,
 162                 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 163                 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
 164                 .mcs = {
 165                         .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
 166                         .rx_highest = cpu_to_le16(72),
 167                         .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
 168                 }
 169         }
 170 };
 171
 172 #ifdef CONFIG_PM
 173
 174 static const struct wiphy_wowlan_support wowlan_support = {
 175         .flags = WIPHY_WOWLAN_ANY
 176 };
 177
 178 #endif
 179
 180 static inline u8 get_sta_index(struct ieee80211_vif *vif,
 181                                struct wcn36xx_sta *sta_priv)
 182 {
 183         return NL80211_IFTYPE_STATION == vif->type ?
 184                sta_priv->bss_sta_index :
 185                sta_priv->sta_index;
 186 }
 187
 188 static const char * const wcn36xx_caps_names[] = {
 189         "MCC",                          /* 0 */
 190         "P2P",                          /* 1 */
 191         "DOT11AC",                      /* 2 */
 192         "SLM_SESSIONIZATION",           /* 3 */
 193         "DOT11AC_OPMODE",               /* 4 */
 194         "SAP32STA",                     /* 5 */
 195         "TDLS",                         /* 6 */
 196         "P2P_GO_NOA_DECOUPLE_INIT_SCAN",/* 7 */
 197         "WLANACTIVE_OFFLOAD",           /* 8 */
 198         "BEACON_OFFLOAD",               /* 9 */
 199         "SCAN_OFFLOAD",                 /* 10 */
 200         "ROAM_OFFLOAD",                 /* 11 */
 201         "BCN_MISS_OFFLOAD",             /* 12 */
 202         "STA_POWERSAVE",                /* 13 */
 203         "STA_ADVANCED_PWRSAVE",         /* 14 */
 204         "AP_UAPSD",                     /* 15 */
 205         "AP_DFS",                       /* 16 */
 206         "BLOCKACK",                     /* 17 */
 207         "PHY_ERR",                      /* 18 */
 208         "BCN_FILTER",                   /* 19 */
 209         "RTT",                          /* 20 */
 210         "RATECTRL",                     /* 21 */
 211         "WOW",                          /* 22 */
 212         "WLAN_ROAM_SCAN_OFFLOAD",       /* 23 */
 213         "SPECULATIVE_PS_POLL",          /* 24 */
 214         "SCAN_SCH",                     /* 25 */
 215         "IBSS_HEARTBEAT_OFFLOAD",       /* 26 */
 216         "WLAN_SCAN_OFFLOAD",            /* 27 */
 217         "WLAN_PERIODIC_TX_PTRN",        /* 28 */
 218         "ADVANCE_TDLS",                 /* 29 */
 219         "BATCH_SCAN",                   /* 30 */
 220         "FW_IN_TX_PATH",                /* 31 */
 221         "EXTENDED_NSOFFLOAD_SLOT",      /* 32 */
 222         "CH_SWITCH_V1",                 /* 33 */
 223         "HT40_OBSS_SCAN",               /* 34 */
 224         "UPDATE_CHANNEL_LIST",          /* 35 */
 225         "WLAN_MCADDR_FLT",              /* 36 */
 226         "WLAN_CH144",                   /* 37 */
 227         "NAN",                          /* 38 */
 228         "TDLS_SCAN_COEXISTENCE",        /* 39 */
 229         "LINK_LAYER_STATS_MEAS",        /* 40 */
 230         "MU_MIMO",                      /* 41 */
 231         "EXTENDED_SCAN",                /* 42 */
 232         "DYNAMIC_WMM_PS",               /* 43 */
 233         "MAC_SPOOFED_SCAN",             /* 44 */
 234         "BMU_ERROR_GENERIC_RECOVERY",   /* 45 */
 235         "DISA",                         /* 46 */
 236         "FW_STATS",                     /* 47 */
 237         "WPS_PRBRSP_TMPL",              /* 48 */
 238         "BCN_IE_FLT_DELTA",             /* 49 */
 239         "TDLS_OFF_CHANNEL",             /* 51 */
 240         "RTT3",                         /* 52 */
 241         "MGMT_FRAME_LOGGING",           /* 53 */
 242         "ENHANCED_TXBD_COMPLETION",     /* 54 */
 243         "LOGGING_ENHANCEMENT",          /* 55 */
 244         "EXT_SCAN_ENHANCED",            /* 56 */
 245         "MEMORY_DUMP_SUPPORTED",        /* 57 */
 246         "PER_PKT_STATS_SUPPORTED",      /* 58 */
 247         "EXT_LL_STAT",                  /* 60 */
 248         "WIFI_CONFIG",                  /* 61 */
 249         "ANTENNA_DIVERSITY_SELECTION",  /* 62 */
 250 };
 251
 252 static const char *wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x)
 253 {
 254         if (x >= ARRAY_SIZE(wcn36xx_caps_names))
 255                 return "UNKNOWN";
 256         return wcn36xx_caps_names[x];
 257 }
 258
 259 static void wcn36xx_feat_caps_info(struct wcn36xx *wcn)
 260 {
 261         int i;
 262
 263         for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
 264                 if (get_feat_caps(wcn->fw_feat_caps, i))
 265                         wcn36xx_dbg(WCN36XX_DBG_MAC, "FW Cap %s\n", wcn36xx_get_cap_name(i));
 266         }
 267 }
 268
 269 static int wcn36xx_start(struct ieee80211_hw *hw)
 270 {
 271         struct wcn36xx *wcn = hw->priv;
 272         int ret;
 273
 274         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
 275
 276         /* SMD initialization */
 277         ret = wcn36xx_smd_open(wcn);
 278         if (ret) {
 279                 wcn36xx_err("Failed to open smd channel: %d\n", ret);
 280                 goto out_err;
 281         }
 282
 283         /* Allocate memory pools for Mgmt BD headers and Data BD headers */
 284         ret = wcn36xx_dxe_allocate_mem_pools(wcn);
 285         if (ret) {
 286                 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret);
 287                 goto out_smd_close;
 288         }
 289
 290         ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
 291         if (ret) {
 292                 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
 293                 goto out_free_dxe_pool;
 294         }
 295
 296         wcn->hal_buf = kmalloc(WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
 297         if (!wcn->hal_buf) {
 298                 wcn36xx_err("Failed to allocate smd buf\n");
 299                 ret = -ENOMEM;
 300                 goto out_free_dxe_ctl;
 301         }
 302
 303         ret = wcn36xx_smd_load_nv(wcn);
 304         if (ret) {
 305                 wcn36xx_err("Failed to push NV to chip\n");
 306                 goto out_free_smd_buf;
 307         }
 308
 309         ret = wcn36xx_smd_start(wcn);
 310         if (ret) {
 311                 wcn36xx_err("Failed to start chip\n");
 312                 goto out_free_smd_buf;
 313         }
 314
 315         if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
 316                 ret = wcn36xx_smd_feature_caps_exchange(wcn);
 317                 if (ret)
 318                         wcn36xx_warn("Exchange feature caps failed\n");
 319                 else
 320                         wcn36xx_feat_caps_info(wcn);
 321         }
 322
 323         /* DMA channel initialization */
 324         ret = wcn36xx_dxe_init(wcn);
 325         if (ret) {
 326                 wcn36xx_err("DXE init failed\n");
 327                 goto out_smd_stop;
 328         }
 329
 330         wcn36xx_debugfs_init(wcn);
 331
 332         INIT_LIST_HEAD(&wcn->vif_list);
 333         spin_lock_init(&wcn->dxe_lock);
 334
 335         return 0;
 336
 337 out_smd_stop:
 338         wcn36xx_smd_stop(wcn);
 339 out_free_smd_buf:
 340         kfree(wcn->hal_buf);
 341 out_free_dxe_ctl:
 342         wcn36xx_dxe_free_ctl_blks(wcn);
 343 out_free_dxe_pool:
 344         wcn36xx_dxe_free_mem_pools(wcn);
 345 out_smd_close:
 346         wcn36xx_smd_close(wcn);
 347 out_err:
 348         return ret;
 349 }
 350
 351 static void wcn36xx_stop(struct ieee80211_hw *hw)
 352 {
 353         struct wcn36xx *wcn = hw->priv;
 354
 355         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
 356
 357         cancel_work_sync(&wcn->scan_work);
 358
 359         mutex_lock(&wcn->scan_lock);
 360         if (wcn->scan_req) {
 361                 struct cfg80211_scan_info scan_info = {
 362                         .aborted = true,
 363                 };
 364
 365                 ieee80211_scan_completed(wcn->hw, &scan_info);
 366         }
 367         wcn->scan_req = NULL;
 368         mutex_unlock(&wcn->scan_lock);
 369
 370         wcn36xx_debugfs_exit(wcn);
 371         wcn36xx_smd_stop(wcn);
 372         wcn36xx_dxe_deinit(wcn);
 373         wcn36xx_smd_close(wcn);
 374
 375         wcn36xx_dxe_free_mem_pools(wcn);
 376         wcn36xx_dxe_free_ctl_blks(wcn);
 377
 378         kfree(wcn->hal_buf);
 379 }
 380
 381 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
 382 {
 383         struct wcn36xx *wcn = hw->priv;
 384         struct ieee80211_vif *vif = NULL;
 385         struct wcn36xx_vif *tmp;
 386
 387         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
 388
 389         mutex_lock(&wcn->conf_mutex);
 390
 391         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 392                 int ch = WCN36XX_HW_CHANNEL(wcn);
 393                 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
 394                             ch);
 395                 list_for_each_entry(tmp, &wcn->vif_list, list) {
 396                         vif = wcn36xx_priv_to_vif(tmp);
 397                         wcn36xx_smd_switch_channel(wcn, vif, ch);
 398                 }
 399         }
 400
 401         if (changed & IEEE80211_CONF_CHANGE_PS) {
 402                 list_for_each_entry(tmp, &wcn->vif_list, list) {
 403                         vif = wcn36xx_priv_to_vif(tmp);
 404                         if (hw->conf.flags & IEEE80211_CONF_PS) {
 405                                 if (vif->bss_conf.ps) /* ps allowed ? */
 406                                         wcn36xx_pmc_enter_bmps_state(wcn, vif);
 407                         } else {
 408                                 wcn36xx_pmc_exit_bmps_state(wcn, vif);
 409                         }
 410                 }
 411         }
 412
 413         mutex_unlock(&wcn->conf_mutex);
 414
 415         return 0;
 416 }
 417
 418 static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
 419                                      unsigned int changed,
 420                                      unsigned int *total, u64 multicast)
 421 {
 422         struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
 423         struct wcn36xx *wcn = hw->priv;
 424         struct wcn36xx_vif *tmp;
 425         struct ieee80211_vif *vif = NULL;
 426
 427         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
 428
 429         mutex_lock(&wcn->conf_mutex);
 430
 431         *total &= FIF_ALLMULTI;
 432
 433         fp = (void *)(unsigned long)multicast;
 434         list_for_each_entry(tmp, &wcn->vif_list, list) {
 435                 vif = wcn36xx_priv_to_vif(tmp);
 436
 437                 /* FW handles MC filtering only when connected as STA */
 438                 if (*total & FIF_ALLMULTI)
 439                         wcn36xx_smd_set_mc_list(wcn, vif, NULL);
 440                 else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc)
 441                         wcn36xx_smd_set_mc_list(wcn, vif, fp);
 442         }
 443
 444         mutex_unlock(&wcn->conf_mutex);
 445         kfree(fp);
 446 }
 447
 448 static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw,
 449                                      struct netdev_hw_addr_list *mc_list)
 450 {
 451         struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
 452         struct netdev_hw_addr *ha;
 453
 454         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n");
 455         fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
 456         if (!fp) {
 457                 wcn36xx_err("Out of memory setting filters.\n");
 458                 return 0;
 459         }
 460
 461         fp->mc_addr_count = 0;
 462         /* update multicast filtering parameters */
 463         if (netdev_hw_addr_list_count(mc_list) <=
 464             WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) {
 465                 netdev_hw_addr_list_for_each(ha, mc_list) {
 466                         memcpy(fp->mc_addr[fp->mc_addr_count],
 467                                         ha->addr, ETH_ALEN);
 468                         fp->mc_addr_count++;
 469                 }
 470         }
 471
 472         return (u64)(unsigned long)fp;
 473 }
 474
 475 static void wcn36xx_tx(struct ieee80211_hw *hw,
 476                        struct ieee80211_tx_control *control,
 477                        struct sk_buff *skb)
 478 {
 479         struct wcn36xx *wcn = hw->priv;
 480         struct wcn36xx_sta *sta_priv = NULL;
 481
 482         if (control->sta)
 483                 sta_priv = wcn36xx_sta_to_priv(control->sta);
 484
 485         if (wcn36xx_start_tx(wcn, sta_priv, skb))
 486                 ieee80211_free_txskb(wcn->hw, skb);
 487 }
 488
 489 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 490                            struct ieee80211_vif *vif,
 491                            struct ieee80211_sta *sta,
 492                            struct ieee80211_key_conf *key_conf)
 493 {
 494         struct wcn36xx *wcn = hw->priv;
 495         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 496         struct wcn36xx_sta *sta_priv = sta ? wcn36xx_sta_to_priv(sta) : NULL;
 497         int ret = 0;
 498         u8 key[WLAN_MAX_KEY_LEN];
 499
 500         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
 501         wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
 502                     cmd, key_conf->cipher, key_conf->keyidx,
 503                     key_conf->keylen, key_conf->flags);
 504         wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
 505                          key_conf->key,
 506                          key_conf->keylen);
 507
 508         mutex_lock(&wcn->conf_mutex);
 509
 510         switch (key_conf->cipher) {
 511         case WLAN_CIPHER_SUITE_WEP40:
 512                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 513                 break;
 514         case WLAN_CIPHER_SUITE_WEP104:
 515                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP104;
 516                 break;
 517         case WLAN_CIPHER_SUITE_CCMP:
 518                 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
 519                 break;
 520         case WLAN_CIPHER_SUITE_TKIP:
 521                 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
 522                 break;
 523         default:
 524                 wcn36xx_err("Unsupported key type 0x%x\n",
 525                               key_conf->cipher);
 526                 ret = -EOPNOTSUPP;
 527                 goto out;
 528         }
 529
 530         switch (cmd) {
 531         case SET_KEY:
 532                 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
 533                         /*
 534                          * Supplicant is sending key in the wrong order:
 535                          * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
 536                          * but HW expects it to be in the order as described in
 537                          * IEEE 802.11 spec (see chapter 11.7) like this:
 538                          * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
 539                          */
 540                         memcpy(key, key_conf->key, 16);
 541                         memcpy(key + 16, key_conf->key + 24, 8);
 542                         memcpy(key + 24, key_conf->key + 16, 8);
 543                 } else {
 544                         memcpy(key, key_conf->key, key_conf->keylen);
 545                 }
 546
 547                 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
 548                         sta_priv->is_data_encrypted = true;
 549                         /* Reconfigure bss with encrypt_type */
 550                         if (NL80211_IFTYPE_STATION == vif->type)
 551                                 wcn36xx_smd_config_bss(wcn,
 552                                                        vif,
 553                                                        sta,
 554                                                        sta->addr,
 555                                                        true);
 556
 557                         wcn36xx_smd_set_stakey(wcn,
 558                                 vif_priv->encrypt_type,
 559                                 key_conf->keyidx,
 560                                 key_conf->keylen,
 561                                 key,
 562                                 get_sta_index(vif, sta_priv));
 563                 } else {
 564                         wcn36xx_smd_set_bsskey(wcn,
 565                                 vif_priv->encrypt_type,
 566                                 vif_priv->bss_index,
 567                                 key_conf->keyidx,
 568                                 key_conf->keylen,
 569                                 key);
 570
 571                         if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
 572                             (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
 573                                 list_for_each_entry(sta_priv,
 574                                                     &vif_priv->sta_list, list) {
 575                                         sta_priv->is_data_encrypted = true;
 576                                         wcn36xx_smd_set_stakey(wcn,
 577                                                 vif_priv->encrypt_type,
 578                                                 key_conf->keyidx,
 579                                                 key_conf->keylen,
 580                                                 key,
 581                                                 get_sta_index(vif, sta_priv));
 582                                 }
 583                         }
 584                 }
 585                 break;
 586         case DISABLE_KEY:
 587                 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
 588                         if (vif_priv->bss_index != WCN36XX_HAL_BSS_INVALID_IDX)
 589                                 wcn36xx_smd_remove_bsskey(wcn,
 590                                         vif_priv->encrypt_type,
 591                                         vif_priv->bss_index,
 592                                         key_conf->keyidx);
 593
 594                         vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 595                 } else {
 596                         sta_priv->is_data_encrypted = false;
 597                         /* do not remove key if disassociated */
 598                         if (sta_priv->aid)
 599                                 wcn36xx_smd_remove_stakey(wcn,
 600                                         vif_priv->encrypt_type,
 601                                         key_conf->keyidx,
 602                                         get_sta_index(vif, sta_priv));
 603                 }
 604                 break;
 605         default:
 606                 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
 607                 ret = -EOPNOTSUPP;
 608                 goto out;
 609         }
 610
 611 out:
 612         mutex_unlock(&wcn->conf_mutex);
 613
 614         return ret;
 615 }
 616
 617 static void wcn36xx_hw_scan_worker(struct work_struct *work)
 618 {
 619         struct wcn36xx *wcn = container_of(work, struct wcn36xx, scan_work);
 620         struct cfg80211_scan_request *req = wcn->scan_req;
 621         u8 channels[WCN36XX_HAL_PNO_MAX_NETW_CHANNELS_EX];
 622         struct cfg80211_scan_info scan_info = {};
 623         bool aborted = false;
 624         int i;
 625
 626         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 scan %d channels worker\n", req->n_channels);
 627
 628         for (i = 0; i < req->n_channels; i++)
 629                 channels[i] = req->channels[i]->hw_value;
 630
 631         wcn36xx_smd_update_scan_params(wcn, channels, req->n_channels);
 632
 633         wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
 634         for (i = 0; i < req->n_channels; i++) {
 635                 mutex_lock(&wcn->scan_lock);
 636                 aborted = wcn->scan_aborted;
 637                 mutex_unlock(&wcn->scan_lock);
 638
 639                 if (aborted)
 640                         break;
 641
 642                 wcn->scan_freq = req->channels[i]->center_freq;
 643                 wcn->scan_band = req->channels[i]->band;
 644
 645                 wcn36xx_smd_start_scan(wcn, req->channels[i]->hw_value);
 646                 msleep(30);
 647                 wcn36xx_smd_end_scan(wcn, req->channels[i]->hw_value);
 648
 649                 wcn->scan_freq = 0;
 650         }
 651         wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
 652
 653         scan_info.aborted = aborted;
 654         ieee80211_scan_completed(wcn->hw, &scan_info);
 655
 656         mutex_lock(&wcn->scan_lock);
 657         wcn->scan_req = NULL;
 658         mutex_unlock(&wcn->scan_lock);
 659 }
 660
 661 static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
 662                            struct ieee80211_vif *vif,
 663                            struct ieee80211_scan_request *hw_req)
 664 {
 665         struct wcn36xx *wcn = hw->priv;
 666         mutex_lock(&wcn->scan_lock);
 667         if (wcn->scan_req) {
 668                 mutex_unlock(&wcn->scan_lock);
 669                 return -EBUSY;
 670         }
 671
 672         wcn->scan_aborted = false;
 673         wcn->scan_req = &hw_req->req;
 674
 675         mutex_unlock(&wcn->scan_lock);
 676
 677         if (!get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
 678                 /* legacy manual/sw scan */
 679                 schedule_work(&wcn->scan_work);
 680                 return 0;
 681         }
 682
 683         return wcn36xx_smd_start_hw_scan(wcn, vif, &hw_req->req);
 684 }
 685
 686 static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw,
 687                                    struct ieee80211_vif *vif)
 688 {
 689         struct wcn36xx *wcn = hw->priv;
 690
 691         mutex_lock(&wcn->scan_lock);
 692         wcn->scan_aborted = true;
 693         mutex_unlock(&wcn->scan_lock);
 694
 695         if (get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
 696                 /* ieee80211_scan_completed will be called on FW scan
 697                  * indication */
 698                 wcn36xx_smd_stop_hw_scan(wcn);
 699         } else {
 700                 struct cfg80211_scan_info scan_info = {
 701                         .aborted = true,
 702                 };
 703
 704                 cancel_work_sync(&wcn->scan_work);
 705                 ieee80211_scan_completed(wcn->hw, &scan_info);
 706         }
 707 }
 708
 709 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
 710                                          enum nl80211_band band)
 711 {
 712         int i, size;
 713         u16 *rates_table;
 714         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 715         u32 rates = sta->supp_rates[band];
 716
 717         memset(&sta_priv->supported_rates, 0,
 718                 sizeof(sta_priv->supported_rates));
 719         sta_priv->supported_rates.op_rate_mode = STA_11n;
 720
 721         size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
 722         rates_table = sta_priv->supported_rates.dsss_rates;
 723         if (band == NL80211_BAND_2GHZ) {
 724                 for (i = 0; i < size; i++) {
 725                         if (rates & 0x01) {
 726                                 rates_table[i] = wcn_2ghz_rates[i].hw_value;
 727                                 rates = rates >> 1;
 728                         }
 729                 }
 730         }
 731
 732         size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
 733         rates_table = sta_priv->supported_rates.ofdm_rates;
 734         for (i = 0; i < size; i++) {
 735                 if (rates & 0x01) {
 736                         rates_table[i] = wcn_5ghz_rates[i].hw_value;
 737                         rates = rates >> 1;
 738                 }
 739         }
 740
 741         if (sta->ht_cap.ht_supported) {
 742                 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
 743                         sizeof(sta_priv->supported_rates.supported_mcs_set));
 744                 memcpy(sta_priv->supported_rates.supported_mcs_set,
 745                        sta->ht_cap.mcs.rx_mask,
 746                        sizeof(sta->ht_cap.mcs.rx_mask));
 747         }
 748 }
 749 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
 750 {
 751         u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
 752                 HW_RATE_INDEX_6MBPS,
 753                 HW_RATE_INDEX_9MBPS,
 754                 HW_RATE_INDEX_12MBPS,
 755                 HW_RATE_INDEX_18MBPS,
 756                 HW_RATE_INDEX_24MBPS,
 757                 HW_RATE_INDEX_36MBPS,
 758                 HW_RATE_INDEX_48MBPS,
 759                 HW_RATE_INDEX_54MBPS
 760         };
 761         u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
 762                 HW_RATE_INDEX_1MBPS,
 763                 HW_RATE_INDEX_2MBPS,
 764                 HW_RATE_INDEX_5_5MBPS,
 765                 HW_RATE_INDEX_11MBPS
 766         };
 767
 768         rates->op_rate_mode = STA_11n;
 769         memcpy(rates->dsss_rates, dsss_rates,
 770                 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
 771         memcpy(rates->ofdm_rates, ofdm_rates,
 772                 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
 773         rates->supported_mcs_set[0] = 0xFF;
 774 }
 775 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
 776                                      struct ieee80211_vif *vif,
 777                                      struct ieee80211_bss_conf *bss_conf,
 778                                      u32 changed)
 779 {
 780         struct wcn36xx *wcn = hw->priv;
 781         struct sk_buff *skb = NULL;
 782         u16 tim_off, tim_len;
 783         enum wcn36xx_hal_link_state link_state;
 784         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 785
 786         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
 787                     vif, changed);
 788
 789         mutex_lock(&wcn->conf_mutex);
 790
 791         if (changed & BSS_CHANGED_BEACON_INFO) {
 792                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 793                             "mac bss changed dtim period %d\n",
 794                             bss_conf->dtim_period);
 795
 796                 vif_priv->dtim_period = bss_conf->dtim_period;
 797         }
 798
 799         if (changed & BSS_CHANGED_BSSID) {
 800                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
 801                             bss_conf->bssid);
 802
 803                 if (!is_zero_ether_addr(bss_conf->bssid)) {
 804                         vif_priv->is_joining = true;
 805                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 806                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
 807                                                 WCN36XX_HAL_LINK_PREASSOC_STATE);
 808                         wcn36xx_smd_join(wcn, bss_conf->bssid,
 809                                          vif->addr, WCN36XX_HW_CHANNEL(wcn));
 810                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 811                                                bss_conf->bssid, false);
 812                 } else {
 813                         vif_priv->is_joining = false;
 814                         wcn36xx_smd_delete_bss(wcn, vif);
 815                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
 816                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 817                         vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 818                 }
 819         }
 820
 821         if (changed & BSS_CHANGED_SSID) {
 822                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 823                             "mac bss changed ssid\n");
 824                 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
 825                                  bss_conf->ssid, bss_conf->ssid_len);
 826
 827                 vif_priv->ssid.length = bss_conf->ssid_len;
 828                 memcpy(&vif_priv->ssid.ssid,
 829                        bss_conf->ssid,
 830                        bss_conf->ssid_len);
 831         }
 832
 833         if (changed & BSS_CHANGED_ASSOC) {
 834                 vif_priv->is_joining = false;
 835                 if (bss_conf->assoc) {
 836                         struct ieee80211_sta *sta;
 837                         struct wcn36xx_sta *sta_priv;
 838
 839                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 840                                     "mac assoc bss %pM vif %pM AID=%d\n",
 841                                      bss_conf->bssid,
 842                                      vif->addr,
 843                                      bss_conf->aid);
 844
 845                         vif_priv->sta_assoc = true;
 846
 847                         /*
 848                          * Holding conf_mutex ensures mutal exclusion with
 849                          * wcn36xx_sta_remove() and as such ensures that sta
 850                          * won't be freed while we're operating on it. As such
 851                          * we do not need to hold the rcu_read_lock().
 852                          */
 853                         sta = ieee80211_find_sta(vif, bss_conf->bssid);
 854                         if (!sta) {
 855                                 wcn36xx_err("sta %pM is not found\n",
 856                                               bss_conf->bssid);
 857                                 goto out;
 858                         }
 859                         sta_priv = wcn36xx_sta_to_priv(sta);
 860
 861                         wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 862
 863                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
 864                                 vif->addr,
 865                                 WCN36XX_HAL_LINK_POSTASSOC_STATE);
 866                         wcn36xx_smd_config_bss(wcn, vif, sta,
 867                                                bss_conf->bssid,
 868                                                true);
 869                         sta_priv->aid = bss_conf->aid;
 870                         /*
 871                          * config_sta must be called from  because this is the
 872                          * place where AID is available.
 873                          */
 874                         wcn36xx_smd_config_sta(wcn, vif, sta);
 875                 } else {
 876                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 877                                     "disassociated bss %pM vif %pM AID=%d\n",
 878                                     bss_conf->bssid,
 879                                     vif->addr,
 880                                     bss_conf->aid);
 881                         vif_priv->sta_assoc = false;
 882                         wcn36xx_smd_set_link_st(wcn,
 883                                                 bss_conf->bssid,
 884                                                 vif->addr,
 885                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 886                 }
 887         }
 888
 889         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 890                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
 891                 skb = ieee80211_proberesp_get(hw, vif);
 892                 if (!skb) {
 893                         wcn36xx_err("failed to alloc probereq skb\n");
 894                         goto out;
 895                 }
 896
 897                 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
 898                 dev_kfree_skb(skb);
 899         }
 900
 901         if (changed & BSS_CHANGED_BEACON_ENABLED ||
 902             changed & BSS_CHANGED_BEACON) {
 903                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 904                             "mac bss changed beacon enabled %d\n",
 905                             bss_conf->enable_beacon);
 906
 907                 if (bss_conf->enable_beacon) {
 908                         vif_priv->dtim_period = bss_conf->dtim_period;
 909                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 910                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 911                                                vif->addr, false);
 912                         skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
 913                                                        &tim_len);
 914                         if (!skb) {
 915                                 wcn36xx_err("failed to alloc beacon skb\n");
 916                                 goto out;
 917                         }
 918                         wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
 919                         dev_kfree_skb(skb);
 920
 921                         if (vif->type == NL80211_IFTYPE_ADHOC ||
 922                             vif->type == NL80211_IFTYPE_MESH_POINT)
 923                                 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
 924                         else
 925                                 link_state = WCN36XX_HAL_LINK_AP_STATE;
 926
 927                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 928                                                 link_state);
 929                 } else {
 930                         wcn36xx_smd_delete_bss(wcn, vif);
 931                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 932                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 933                 }
 934         }
 935 out:
 936
 937         mutex_unlock(&wcn->conf_mutex);
 938 }
 939
 940 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
 941 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 942 {
 943         struct wcn36xx *wcn = hw->priv;
 944         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
 945
 946         mutex_lock(&wcn->conf_mutex);
 947         wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
 948         mutex_unlock(&wcn->conf_mutex);
 949
 950         return 0;
 951 }
 952
 953 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
 954                                      struct ieee80211_vif *vif)
 955 {
 956         struct wcn36xx *wcn = hw->priv;
 957         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 958         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
 959
 960         mutex_lock(&wcn->conf_mutex);
 961
 962         list_del(&vif_priv->list);
 963         wcn36xx_smd_delete_sta_self(wcn, vif->addr);
 964
 965         mutex_unlock(&wcn->conf_mutex);
 966 }
 967
 968 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
 969                                  struct ieee80211_vif *vif)
 970 {
 971         struct wcn36xx *wcn = hw->priv;
 972         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 973
 974         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
 975                     vif, vif->type);
 976
 977         if (!(NL80211_IFTYPE_STATION == vif->type ||
 978               NL80211_IFTYPE_AP == vif->type ||
 979               NL80211_IFTYPE_ADHOC == vif->type ||
 980               NL80211_IFTYPE_MESH_POINT == vif->type)) {
 981                 wcn36xx_warn("Unsupported interface type requested: %d\n",
 982                              vif->type);
 983                 return -EOPNOTSUPP;
 984         }
 985
 986         mutex_lock(&wcn->conf_mutex);
 987
 988         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 989         INIT_LIST_HEAD(&vif_priv->sta_list);
 990         list_add(&vif_priv->list, &wcn->vif_list);
 991         wcn36xx_smd_add_sta_self(wcn, vif);
 992
 993         mutex_unlock(&wcn->conf_mutex);
 994
 995         return 0;
 996 }
 997
 998 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 999                            struct ieee80211_sta *sta)
1000 {
1001         struct wcn36xx *wcn = hw->priv;
1002         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1003         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1004         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
1005                     vif, sta->addr);
1006
1007         mutex_lock(&wcn->conf_mutex);
1008
1009         spin_lock_init(&sta_priv->ampdu_lock);
1010         sta_priv->vif = vif_priv;
1011         list_add(&sta_priv->list, &vif_priv->sta_list);
1012
1013         /*
1014          * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
1015          * at this stage AID is not available yet.
1016          */
1017         if (NL80211_IFTYPE_STATION != vif->type) {
1018                 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
1019                 sta_priv->aid = sta->aid;
1020                 wcn36xx_smd_config_sta(wcn, vif, sta);
1021         }
1022
1023         mutex_unlock(&wcn->conf_mutex);
1024
1025         return 0;
1026 }
1027
1028 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
1029                               struct ieee80211_vif *vif,
1030                               struct ieee80211_sta *sta)
1031 {
1032         struct wcn36xx *wcn = hw->priv;
1033         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1034
1035         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
1036                     vif, sta->addr, sta_priv->sta_index);
1037
1038         mutex_lock(&wcn->conf_mutex);
1039
1040         list_del(&sta_priv->list);
1041         wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
1042         sta_priv->vif = NULL;
1043
1044         mutex_unlock(&wcn->conf_mutex);
1045
1046         return 0;
1047 }
1048
1049 #ifdef CONFIG_PM
1050
1051 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
1052 {
1053         struct wcn36xx *wcn = hw->priv;
1054
1055         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
1056
1057         flush_workqueue(wcn->hal_ind_wq);
1058         wcn36xx_smd_set_power_params(wcn, true);
1059         return 0;
1060 }
1061
1062 static int wcn36xx_resume(struct ieee80211_hw *hw)
1063 {
1064         struct wcn36xx *wcn = hw->priv;
1065
1066         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
1067
1068         flush_workqueue(wcn->hal_ind_wq);
1069         wcn36xx_smd_set_power_params(wcn, false);
1070         return 0;
1071 }
1072
1073 #endif
1074
1075 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
1076                     struct ieee80211_vif *vif,
1077                     struct ieee80211_ampdu_params *params)
1078 {
1079         struct wcn36xx *wcn = hw->priv;
1080         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta);
1081         struct ieee80211_sta *sta = params->sta;
1082         enum ieee80211_ampdu_mlme_action action = params->action;
1083         u16 tid = params->tid;
1084         u16 *ssn = &params->ssn;
1085         int ret = 0;
1086
1087         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
1088                     action, tid);
1089
1090         mutex_lock(&wcn->conf_mutex);
1091
1092         switch (action) {
1093         case IEEE80211_AMPDU_RX_START:
1094                 sta_priv->tid = tid;
1095                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
1096                         get_sta_index(vif, sta_priv));
1097                 wcn36xx_smd_add_ba(wcn);
1098                 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv));
1099                 break;
1100         case IEEE80211_AMPDU_RX_STOP:
1101                 wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
1102                 break;
1103         case IEEE80211_AMPDU_TX_START:
1104                 spin_lock_bh(&sta_priv->ampdu_lock);
1105                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
1106                 spin_unlock_bh(&sta_priv->ampdu_lock);
1107
1108                 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
1109                 break;
1110         case IEEE80211_AMPDU_TX_OPERATIONAL:
1111                 spin_lock_bh(&sta_priv->ampdu_lock);
1112                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
1113                 spin_unlock_bh(&sta_priv->ampdu_lock);
1114
1115                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
1116                         get_sta_index(vif, sta_priv));
1117                 break;
1118         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1119         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1120         case IEEE80211_AMPDU_TX_STOP_CONT:
1121                 spin_lock_bh(&sta_priv->ampdu_lock);
1122                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
1123                 spin_unlock_bh(&sta_priv->ampdu_lock);
1124
1125                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1126                 break;
1127         default:
1128                 wcn36xx_err("Unknown AMPDU action\n");
1129         }
1130
1131         mutex_unlock(&wcn->conf_mutex);
1132
1133         return ret;
1134 }
1135
1136 static const struct ieee80211_ops wcn36xx_ops = {
1137         .start                  = wcn36xx_start,
1138         .stop                   = wcn36xx_stop,
1139         .add_interface          = wcn36xx_add_interface,
1140         .remove_interface       = wcn36xx_remove_interface,
1141 #ifdef CONFIG_PM
1142         .suspend                = wcn36xx_suspend,
1143         .resume                 = wcn36xx_resume,
1144 #endif
1145         .config                 = wcn36xx_config,
1146         .prepare_multicast      = wcn36xx_prepare_multicast,
1147         .configure_filter       = wcn36xx_configure_filter,
1148         .tx                     = wcn36xx_tx,
1149         .set_key                = wcn36xx_set_key,
1150         .hw_scan                = wcn36xx_hw_scan,
1151         .cancel_hw_scan         = wcn36xx_cancel_hw_scan,
1152         .bss_info_changed       = wcn36xx_bss_info_changed,
1153         .set_rts_threshold      = wcn36xx_set_rts_threshold,
1154         .sta_add                = wcn36xx_sta_add,
1155         .sta_remove             = wcn36xx_sta_remove,
1156         .ampdu_action           = wcn36xx_ampdu_action,
1157
1158         CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd)
1159 };
1160
1161 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
1162 {
1163         static const u32 cipher_suites[] = {
1164                 WLAN_CIPHER_SUITE_WEP40,
1165                 WLAN_CIPHER_SUITE_WEP104,
1166                 WLAN_CIPHER_SUITE_TKIP,
1167                 WLAN_CIPHER_SUITE_CCMP,
1168         };
1169
1170         ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
1171         ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
1172         ieee80211_hw_set(wcn->hw, CONNECTION_MONITOR);
1173         ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
1174         ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
1175         ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
1176         ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS);
1177
1178         wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1179                 BIT(NL80211_IFTYPE_AP) |
1180                 BIT(NL80211_IFTYPE_ADHOC) |
1181                 BIT(NL80211_IFTYPE_MESH_POINT);
1182
1183         wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz;
1184         if (wcn->rf_id != RF_IRIS_WCN3620)
1185                 wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz;
1186
1187         wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS;
1188         wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN;
1189
1190         wcn->hw->wiphy->cipher_suites = cipher_suites;
1191         wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1192
1193 #ifdef CONFIG_PM
1194         wcn->hw->wiphy->wowlan = &wowlan_support;
1195 #endif
1196
1197         wcn->hw->max_listen_interval = 200;
1198
1199         wcn->hw->queues = 4;
1200
1201         SET_IEEE80211_DEV(wcn->hw, wcn->dev);
1202
1203         wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
1204         wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
1205
1206         wiphy_ext_feature_set(wcn->hw->wiphy,
1207                               NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1208
1209         return 0;
1210 }
1211
1212 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
1213                                           struct platform_device *pdev)
1214 {
1215         struct device_node *mmio_node;
1216         struct device_node *iris_node;
1217         struct resource *res;
1218         int index;
1219         int ret;
1220
1221         /* Set TX IRQ */
1222         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "tx");
1223         if (!res) {
1224                 wcn36xx_err("failed to get tx_irq\n");
1225                 return -ENOENT;
1226         }
1227         wcn->tx_irq = res->start;
1228
1229         /* Set RX IRQ */
1230         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "rx");
1231         if (!res) {
1232                 wcn36xx_err("failed to get rx_irq\n");
1233                 return -ENOENT;
1234         }
1235         wcn->rx_irq = res->start;
1236
1237         /* Acquire SMSM tx enable handle */
1238         wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev,
1239                         "tx-enable", &wcn->tx_enable_state_bit);
1240         if (IS_ERR(wcn->tx_enable_state)) {
1241                 wcn36xx_err("failed to get tx-enable state\n");
1242                 return PTR_ERR(wcn->tx_enable_state);
1243         }
1244
1245         /* Acquire SMSM tx rings empty handle */
1246         wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev,
1247                         "tx-rings-empty", &wcn->tx_rings_empty_state_bit);
1248         if (IS_ERR(wcn->tx_rings_empty_state)) {
1249                 wcn36xx_err("failed to get tx-rings-empty state\n");
1250                 return PTR_ERR(wcn->tx_rings_empty_state);
1251         }
1252
1253         mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0);
1254         if (!mmio_node) {
1255                 wcn36xx_err("failed to acquire qcom,mmio reference\n");
1256                 return -EINVAL;
1257         }
1258
1259         wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto");
1260
1261         /* Map the CCU memory */
1262         index = of_property_match_string(mmio_node, "reg-names", "ccu");
1263         wcn->ccu_base = of_iomap(mmio_node, index);
1264         if (!wcn->ccu_base) {
1265                 wcn36xx_err("failed to map ccu memory\n");
1266                 ret = -ENOMEM;
1267                 goto put_mmio_node;
1268         }
1269
1270         /* Map the DXE memory */
1271         index = of_property_match_string(mmio_node, "reg-names", "dxe");
1272         wcn->dxe_base = of_iomap(mmio_node, index);
1273         if (!wcn->dxe_base) {
1274                 wcn36xx_err("failed to map dxe memory\n");
1275                 ret = -ENOMEM;
1276                 goto unmap_ccu;
1277         }
1278
1279         /* External RF module */
1280         iris_node = of_get_child_by_name(mmio_node, "iris");
1281         if (iris_node) {
1282                 if (of_device_is_compatible(iris_node, "qcom,wcn3620"))
1283                         wcn->rf_id = RF_IRIS_WCN3620;
1284                 of_node_put(iris_node);
1285         }
1286
1287         of_node_put(mmio_node);
1288         return 0;
1289
1290 unmap_ccu:
1291         iounmap(wcn->ccu_base);
1292 put_mmio_node:
1293         of_node_put(mmio_node);
1294         return ret;
1295 }
1296
1297 static int wcn36xx_probe(struct platform_device *pdev)
1298 {
1299         struct ieee80211_hw *hw;
1300         struct wcn36xx *wcn;
1301         void *wcnss;
1302         int ret;
1303         const u8 *addr;
1304
1305         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1306
1307         wcnss = dev_get_drvdata(pdev->dev.parent);
1308
1309         hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1310         if (!hw) {
1311                 wcn36xx_err("failed to alloc hw\n");
1312                 ret = -ENOMEM;
1313                 goto out_err;
1314         }
1315         platform_set_drvdata(pdev, hw);
1316         wcn = hw->priv;
1317         wcn->hw = hw;
1318         wcn->dev = &pdev->dev;
1319         wcn->first_boot = true;
1320         mutex_init(&wcn->conf_mutex);
1321         mutex_init(&wcn->hal_mutex);
1322         mutex_init(&wcn->scan_lock);
1323
1324         ret = dma_set_mask_and_coherent(wcn->dev, DMA_BIT_MASK(32));
1325         if (ret < 0) {
1326                 wcn36xx_err("failed to set DMA mask: %d\n", ret);
1327                 goto out_wq;
1328         }
1329
1330         INIT_WORK(&wcn->scan_work, wcn36xx_hw_scan_worker);
1331
1332         wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw);
1333         if (IS_ERR(wcn->smd_channel)) {
1334                 wcn36xx_err("failed to open WLAN_CTRL channel\n");
1335                 ret = PTR_ERR(wcn->smd_channel);
1336                 goto out_wq;
1337         }
1338
1339         addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret);
1340         if (addr && ret != ETH_ALEN) {
1341                 wcn36xx_err("invalid local-mac-address\n");
1342                 ret = -EINVAL;
1343                 goto out_wq;
1344         } else if (addr) {
1345                 wcn36xx_info("mac address: %pM\n", addr);
1346                 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1347         }
1348
1349         ret = wcn36xx_platform_get_resources(wcn, pdev);
1350         if (ret)
1351                 goto out_wq;
1352
1353         wcn36xx_init_ieee80211(wcn);
1354         ret = ieee80211_register_hw(wcn->hw);
1355         if (ret)
1356                 goto out_unmap;
1357
1358         return 0;
1359
1360 out_unmap:
1361         iounmap(wcn->ccu_base);
1362         iounmap(wcn->dxe_base);
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 MODULE_FIRMWARE(WLAN_NV_FILE);