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 = wcn36xx_sta_to_priv(sta);
 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_WEP40;
 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                         if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
 571                             (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
 572                                 sta_priv->is_data_encrypted = true;
 573                                 wcn36xx_smd_set_stakey(wcn,
 574                                         vif_priv->encrypt_type,
 575                                         key_conf->keyidx,
 576                                         key_conf->keylen,
 577                                         key,
 578                                         get_sta_index(vif, sta_priv));
 579                         }
 580                 }
 581                 break;
 582         case DISABLE_KEY:
 583                 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
 584                         if (vif_priv->bss_index != WCN36XX_HAL_BSS_INVALID_IDX)
 585                                 wcn36xx_smd_remove_bsskey(wcn,
 586                                         vif_priv->encrypt_type,
 587                                         vif_priv->bss_index,
 588                                         key_conf->keyidx);
 589
 590                         vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 591                 } else {
 592                         sta_priv->is_data_encrypted = false;
 593                         /* do not remove key if disassociated */
 594                         if (sta_priv->aid)
 595                                 wcn36xx_smd_remove_stakey(wcn,
 596                                         vif_priv->encrypt_type,
 597                                         key_conf->keyidx,
 598                                         get_sta_index(vif, sta_priv));
 599                 }
 600                 break;
 601         default:
 602                 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
 603                 ret = -EOPNOTSUPP;
 604                 goto out;
 605         }
 606
 607 out:
 608         mutex_unlock(&wcn->conf_mutex);
 609
 610         return ret;
 611 }
 612
 613 static void wcn36xx_hw_scan_worker(struct work_struct *work)
 614 {
 615         struct wcn36xx *wcn = container_of(work, struct wcn36xx, scan_work);
 616         struct cfg80211_scan_request *req = wcn->scan_req;
 617         u8 channels[WCN36XX_HAL_PNO_MAX_NETW_CHANNELS_EX];
 618         struct cfg80211_scan_info scan_info = {};
 619         bool aborted = false;
 620         int i;
 621
 622         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 scan %d channels worker\n", req->n_channels);
 623
 624         for (i = 0; i < req->n_channels; i++)
 625                 channels[i] = req->channels[i]->hw_value;
 626
 627         wcn36xx_smd_update_scan_params(wcn, channels, req->n_channels);
 628
 629         wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
 630         for (i = 0; i < req->n_channels; i++) {
 631                 mutex_lock(&wcn->scan_lock);
 632                 aborted = wcn->scan_aborted;
 633                 mutex_unlock(&wcn->scan_lock);
 634
 635                 if (aborted)
 636                         break;
 637
 638                 wcn->scan_freq = req->channels[i]->center_freq;
 639                 wcn->scan_band = req->channels[i]->band;
 640
 641                 wcn36xx_smd_start_scan(wcn, req->channels[i]->hw_value);
 642                 msleep(30);
 643                 wcn36xx_smd_end_scan(wcn, req->channels[i]->hw_value);
 644
 645                 wcn->scan_freq = 0;
 646         }
 647         wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
 648
 649         scan_info.aborted = aborted;
 650         ieee80211_scan_completed(wcn->hw, &scan_info);
 651
 652         mutex_lock(&wcn->scan_lock);
 653         wcn->scan_req = NULL;
 654         mutex_unlock(&wcn->scan_lock);
 655 }
 656
 657 static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
 658                            struct ieee80211_vif *vif,
 659                            struct ieee80211_scan_request *hw_req)
 660 {
 661         struct wcn36xx *wcn = hw->priv;
 662         mutex_lock(&wcn->scan_lock);
 663         if (wcn->scan_req) {
 664                 mutex_unlock(&wcn->scan_lock);
 665                 return -EBUSY;
 666         }
 667
 668         wcn->scan_aborted = false;
 669         wcn->scan_req = &hw_req->req;
 670
 671         mutex_unlock(&wcn->scan_lock);
 672
 673         if (!get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
 674                 /* legacy manual/sw scan */
 675                 schedule_work(&wcn->scan_work);
 676                 return 0;
 677         }
 678
 679         return wcn36xx_smd_start_hw_scan(wcn, vif, &hw_req->req);
 680 }
 681
 682 static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw,
 683                                    struct ieee80211_vif *vif)
 684 {
 685         struct wcn36xx *wcn = hw->priv;
 686
 687         mutex_lock(&wcn->scan_lock);
 688         wcn->scan_aborted = true;
 689         mutex_unlock(&wcn->scan_lock);
 690
 691         if (get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
 692                 /* ieee80211_scan_completed will be called on FW scan
 693                  * indication */
 694                 wcn36xx_smd_stop_hw_scan(wcn);
 695         } else {
 696                 struct cfg80211_scan_info scan_info = {
 697                         .aborted = true,
 698                 };
 699
 700                 cancel_work_sync(&wcn->scan_work);
 701                 ieee80211_scan_completed(wcn->hw, &scan_info);
 702         }
 703 }
 704
 705 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
 706                                          enum nl80211_band band)
 707 {
 708         int i, size;
 709         u16 *rates_table;
 710         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 711         u32 rates = sta->supp_rates[band];
 712
 713         memset(&sta_priv->supported_rates, 0,
 714                 sizeof(sta_priv->supported_rates));
 715         sta_priv->supported_rates.op_rate_mode = STA_11n;
 716
 717         size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
 718         rates_table = sta_priv->supported_rates.dsss_rates;
 719         if (band == NL80211_BAND_2GHZ) {
 720                 for (i = 0; i < size; i++) {
 721                         if (rates & 0x01) {
 722                                 rates_table[i] = wcn_2ghz_rates[i].hw_value;
 723                                 rates = rates >> 1;
 724                         }
 725                 }
 726         }
 727
 728         size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
 729         rates_table = sta_priv->supported_rates.ofdm_rates;
 730         for (i = 0; i < size; i++) {
 731                 if (rates & 0x01) {
 732                         rates_table[i] = wcn_5ghz_rates[i].hw_value;
 733                         rates = rates >> 1;
 734                 }
 735         }
 736
 737         if (sta->ht_cap.ht_supported) {
 738                 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
 739                         sizeof(sta_priv->supported_rates.supported_mcs_set));
 740                 memcpy(sta_priv->supported_rates.supported_mcs_set,
 741                        sta->ht_cap.mcs.rx_mask,
 742                        sizeof(sta->ht_cap.mcs.rx_mask));
 743         }
 744 }
 745 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
 746 {
 747         u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
 748                 HW_RATE_INDEX_6MBPS,
 749                 HW_RATE_INDEX_9MBPS,
 750                 HW_RATE_INDEX_12MBPS,
 751                 HW_RATE_INDEX_18MBPS,
 752                 HW_RATE_INDEX_24MBPS,
 753                 HW_RATE_INDEX_36MBPS,
 754                 HW_RATE_INDEX_48MBPS,
 755                 HW_RATE_INDEX_54MBPS
 756         };
 757         u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
 758                 HW_RATE_INDEX_1MBPS,
 759                 HW_RATE_INDEX_2MBPS,
 760                 HW_RATE_INDEX_5_5MBPS,
 761                 HW_RATE_INDEX_11MBPS
 762         };
 763
 764         rates->op_rate_mode = STA_11n;
 765         memcpy(rates->dsss_rates, dsss_rates,
 766                 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
 767         memcpy(rates->ofdm_rates, ofdm_rates,
 768                 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
 769         rates->supported_mcs_set[0] = 0xFF;
 770 }
 771 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
 772                                      struct ieee80211_vif *vif,
 773                                      struct ieee80211_bss_conf *bss_conf,
 774                                      u32 changed)
 775 {
 776         struct wcn36xx *wcn = hw->priv;
 777         struct sk_buff *skb = NULL;
 778         u16 tim_off, tim_len;
 779         enum wcn36xx_hal_link_state link_state;
 780         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 781
 782         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
 783                     vif, changed);
 784
 785         mutex_lock(&wcn->conf_mutex);
 786
 787         if (changed & BSS_CHANGED_BEACON_INFO) {
 788                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 789                             "mac bss changed dtim period %d\n",
 790                             bss_conf->dtim_period);
 791
 792                 vif_priv->dtim_period = bss_conf->dtim_period;
 793         }
 794
 795         if (changed & BSS_CHANGED_BSSID) {
 796                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
 797                             bss_conf->bssid);
 798
 799                 if (!is_zero_ether_addr(bss_conf->bssid)) {
 800                         vif_priv->is_joining = true;
 801                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 802                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
 803                                                 WCN36XX_HAL_LINK_PREASSOC_STATE);
 804                         wcn36xx_smd_join(wcn, bss_conf->bssid,
 805                                          vif->addr, WCN36XX_HW_CHANNEL(wcn));
 806                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 807                                                bss_conf->bssid, false);
 808                 } else {
 809                         vif_priv->is_joining = false;
 810                         wcn36xx_smd_delete_bss(wcn, vif);
 811                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
 812                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 813                         vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 814                 }
 815         }
 816
 817         if (changed & BSS_CHANGED_SSID) {
 818                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 819                             "mac bss changed ssid\n");
 820                 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
 821                                  bss_conf->ssid, bss_conf->ssid_len);
 822
 823                 vif_priv->ssid.length = bss_conf->ssid_len;
 824                 memcpy(&vif_priv->ssid.ssid,
 825                        bss_conf->ssid,
 826                        bss_conf->ssid_len);
 827         }
 828
 829         if (changed & BSS_CHANGED_ASSOC) {
 830                 vif_priv->is_joining = false;
 831                 if (bss_conf->assoc) {
 832                         struct ieee80211_sta *sta;
 833                         struct wcn36xx_sta *sta_priv;
 834
 835                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 836                                     "mac assoc bss %pM vif %pM AID=%d\n",
 837                                      bss_conf->bssid,
 838                                      vif->addr,
 839                                      bss_conf->aid);
 840
 841                         vif_priv->sta_assoc = true;
 842
 843                         /*
 844                          * Holding conf_mutex ensures mutal exclusion with
 845                          * wcn36xx_sta_remove() and as such ensures that sta
 846                          * won't be freed while we're operating on it. As such
 847                          * we do not need to hold the rcu_read_lock().
 848                          */
 849                         sta = ieee80211_find_sta(vif, bss_conf->bssid);
 850                         if (!sta) {
 851                                 wcn36xx_err("sta %pM is not found\n",
 852                                               bss_conf->bssid);
 853                                 goto out;
 854                         }
 855                         sta_priv = wcn36xx_sta_to_priv(sta);
 856
 857                         wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 858
 859                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
 860                                 vif->addr,
 861                                 WCN36XX_HAL_LINK_POSTASSOC_STATE);
 862                         wcn36xx_smd_config_bss(wcn, vif, sta,
 863                                                bss_conf->bssid,
 864                                                true);
 865                         sta_priv->aid = bss_conf->aid;
 866                         /*
 867                          * config_sta must be called from  because this is the
 868                          * place where AID is available.
 869                          */
 870                         wcn36xx_smd_config_sta(wcn, vif, sta);
 871                 } else {
 872                         wcn36xx_dbg(WCN36XX_DBG_MAC,
 873                                     "disassociated bss %pM vif %pM AID=%d\n",
 874                                     bss_conf->bssid,
 875                                     vif->addr,
 876                                     bss_conf->aid);
 877                         vif_priv->sta_assoc = false;
 878                         wcn36xx_smd_set_link_st(wcn,
 879                                                 bss_conf->bssid,
 880                                                 vif->addr,
 881                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 882                 }
 883         }
 884
 885         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 886                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
 887                 skb = ieee80211_proberesp_get(hw, vif);
 888                 if (!skb) {
 889                         wcn36xx_err("failed to alloc probereq skb\n");
 890                         goto out;
 891                 }
 892
 893                 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
 894                 dev_kfree_skb(skb);
 895         }
 896
 897         if (changed & BSS_CHANGED_BEACON_ENABLED ||
 898             changed & BSS_CHANGED_BEACON) {
 899                 wcn36xx_dbg(WCN36XX_DBG_MAC,
 900                             "mac bss changed beacon enabled %d\n",
 901                             bss_conf->enable_beacon);
 902
 903                 if (bss_conf->enable_beacon) {
 904                         vif_priv->dtim_period = bss_conf->dtim_period;
 905                         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 906                         wcn36xx_smd_config_bss(wcn, vif, NULL,
 907                                                vif->addr, false);
 908                         skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
 909                                                        &tim_len);
 910                         if (!skb) {
 911                                 wcn36xx_err("failed to alloc beacon skb\n");
 912                                 goto out;
 913                         }
 914                         wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
 915                         dev_kfree_skb(skb);
 916
 917                         if (vif->type == NL80211_IFTYPE_ADHOC ||
 918                             vif->type == NL80211_IFTYPE_MESH_POINT)
 919                                 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
 920                         else
 921                                 link_state = WCN36XX_HAL_LINK_AP_STATE;
 922
 923                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 924                                                 link_state);
 925                 } else {
 926                         wcn36xx_smd_delete_bss(wcn, vif);
 927                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 928                                                 WCN36XX_HAL_LINK_IDLE_STATE);
 929                 }
 930         }
 931 out:
 932
 933         mutex_unlock(&wcn->conf_mutex);
 934
 935         return;
 936 }
 937
 938 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
 939 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 940 {
 941         struct wcn36xx *wcn = hw->priv;
 942         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
 943
 944         mutex_lock(&wcn->conf_mutex);
 945         wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
 946         mutex_unlock(&wcn->conf_mutex);
 947
 948         return 0;
 949 }
 950
 951 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
 952                                      struct ieee80211_vif *vif)
 953 {
 954         struct wcn36xx *wcn = hw->priv;
 955         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 956         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
 957
 958         mutex_lock(&wcn->conf_mutex);
 959
 960         list_del(&vif_priv->list);
 961         wcn36xx_smd_delete_sta_self(wcn, vif->addr);
 962
 963         mutex_unlock(&wcn->conf_mutex);
 964 }
 965
 966 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
 967                                  struct ieee80211_vif *vif)
 968 {
 969         struct wcn36xx *wcn = hw->priv;
 970         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 971
 972         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
 973                     vif, vif->type);
 974
 975         if (!(NL80211_IFTYPE_STATION == vif->type ||
 976               NL80211_IFTYPE_AP == vif->type ||
 977               NL80211_IFTYPE_ADHOC == vif->type ||
 978               NL80211_IFTYPE_MESH_POINT == vif->type)) {
 979                 wcn36xx_warn("Unsupported interface type requested: %d\n",
 980                              vif->type);
 981                 return -EOPNOTSUPP;
 982         }
 983
 984         mutex_lock(&wcn->conf_mutex);
 985
 986         vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 987         list_add(&vif_priv->list, &wcn->vif_list);
 988         wcn36xx_smd_add_sta_self(wcn, vif);
 989
 990         mutex_unlock(&wcn->conf_mutex);
 991
 992         return 0;
 993 }
 994
 995 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 996                            struct ieee80211_sta *sta)
 997 {
 998         struct wcn36xx *wcn = hw->priv;
 999         struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1000         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1001         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
1002                     vif, sta->addr);
1003
1004         mutex_lock(&wcn->conf_mutex);
1005
1006         spin_lock_init(&sta_priv->ampdu_lock);
1007         sta_priv->vif = vif_priv;
1008         /*
1009          * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
1010          * at this stage AID is not available yet.
1011          */
1012         if (NL80211_IFTYPE_STATION != vif->type) {
1013                 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
1014                 sta_priv->aid = sta->aid;
1015                 wcn36xx_smd_config_sta(wcn, vif, sta);
1016         }
1017
1018         mutex_unlock(&wcn->conf_mutex);
1019
1020         return 0;
1021 }
1022
1023 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
1024                               struct ieee80211_vif *vif,
1025                               struct ieee80211_sta *sta)
1026 {
1027         struct wcn36xx *wcn = hw->priv;
1028         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1029
1030         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
1031                     vif, sta->addr, sta_priv->sta_index);
1032
1033         mutex_lock(&wcn->conf_mutex);
1034
1035         wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
1036         sta_priv->vif = NULL;
1037
1038         mutex_unlock(&wcn->conf_mutex);
1039
1040         return 0;
1041 }
1042
1043 #ifdef CONFIG_PM
1044
1045 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
1046 {
1047         struct wcn36xx *wcn = hw->priv;
1048
1049         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
1050
1051         flush_workqueue(wcn->hal_ind_wq);
1052         wcn36xx_smd_set_power_params(wcn, true);
1053         return 0;
1054 }
1055
1056 static int wcn36xx_resume(struct ieee80211_hw *hw)
1057 {
1058         struct wcn36xx *wcn = hw->priv;
1059
1060         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
1061
1062         flush_workqueue(wcn->hal_ind_wq);
1063         wcn36xx_smd_set_power_params(wcn, false);
1064         return 0;
1065 }
1066
1067 #endif
1068
1069 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
1070                     struct ieee80211_vif *vif,
1071                     struct ieee80211_ampdu_params *params)
1072 {
1073         struct wcn36xx *wcn = hw->priv;
1074         struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta);
1075         struct ieee80211_sta *sta = params->sta;
1076         enum ieee80211_ampdu_mlme_action action = params->action;
1077         u16 tid = params->tid;
1078         u16 *ssn = &params->ssn;
1079
1080         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
1081                     action, tid);
1082
1083         mutex_lock(&wcn->conf_mutex);
1084
1085         switch (action) {
1086         case IEEE80211_AMPDU_RX_START:
1087                 sta_priv->tid = tid;
1088                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
1089                         get_sta_index(vif, sta_priv));
1090                 wcn36xx_smd_add_ba(wcn);
1091                 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv));
1092                 break;
1093         case IEEE80211_AMPDU_RX_STOP:
1094                 wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
1095                 break;
1096         case IEEE80211_AMPDU_TX_START:
1097                 spin_lock_bh(&sta_priv->ampdu_lock);
1098                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
1099                 spin_unlock_bh(&sta_priv->ampdu_lock);
1100
1101                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1102                 break;
1103         case IEEE80211_AMPDU_TX_OPERATIONAL:
1104                 spin_lock_bh(&sta_priv->ampdu_lock);
1105                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
1106                 spin_unlock_bh(&sta_priv->ampdu_lock);
1107
1108                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
1109                         get_sta_index(vif, sta_priv));
1110                 break;
1111         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1112         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1113         case IEEE80211_AMPDU_TX_STOP_CONT:
1114                 spin_lock_bh(&sta_priv->ampdu_lock);
1115                 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
1116                 spin_unlock_bh(&sta_priv->ampdu_lock);
1117
1118                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1119                 break;
1120         default:
1121                 wcn36xx_err("Unknown AMPDU action\n");
1122         }
1123
1124         mutex_unlock(&wcn->conf_mutex);
1125
1126         return 0;
1127 }
1128
1129 static const struct ieee80211_ops wcn36xx_ops = {
1130         .start                  = wcn36xx_start,
1131         .stop                   = wcn36xx_stop,
1132         .add_interface          = wcn36xx_add_interface,
1133         .remove_interface       = wcn36xx_remove_interface,
1134 #ifdef CONFIG_PM
1135         .suspend                = wcn36xx_suspend,
1136         .resume                 = wcn36xx_resume,
1137 #endif
1138         .config                 = wcn36xx_config,
1139         .prepare_multicast      = wcn36xx_prepare_multicast,
1140         .configure_filter       = wcn36xx_configure_filter,
1141         .tx                     = wcn36xx_tx,
1142         .set_key                = wcn36xx_set_key,
1143         .hw_scan                = wcn36xx_hw_scan,
1144         .cancel_hw_scan         = wcn36xx_cancel_hw_scan,
1145         .bss_info_changed       = wcn36xx_bss_info_changed,
1146         .set_rts_threshold      = wcn36xx_set_rts_threshold,
1147         .sta_add                = wcn36xx_sta_add,
1148         .sta_remove             = wcn36xx_sta_remove,
1149         .ampdu_action           = wcn36xx_ampdu_action,
1150
1151         CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd)
1152 };
1153
1154 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
1155 {
1156         int ret = 0;
1157
1158         static const u32 cipher_suites[] = {
1159                 WLAN_CIPHER_SUITE_WEP40,
1160                 WLAN_CIPHER_SUITE_WEP104,
1161                 WLAN_CIPHER_SUITE_TKIP,
1162                 WLAN_CIPHER_SUITE_CCMP,
1163         };
1164
1165         ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
1166         ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
1167         ieee80211_hw_set(wcn->hw, CONNECTION_MONITOR);
1168         ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
1169         ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
1170         ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
1171         ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS);
1172
1173         wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1174                 BIT(NL80211_IFTYPE_AP) |
1175                 BIT(NL80211_IFTYPE_ADHOC) |
1176                 BIT(NL80211_IFTYPE_MESH_POINT);
1177
1178         wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz;
1179         if (wcn->rf_id != RF_IRIS_WCN3620)
1180                 wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz;
1181
1182         wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS;
1183         wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN;
1184
1185         wcn->hw->wiphy->cipher_suites = cipher_suites;
1186         wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1187
1188 #ifdef CONFIG_PM
1189         wcn->hw->wiphy->wowlan = &wowlan_support;
1190 #endif
1191
1192         wcn->hw->max_listen_interval = 200;
1193
1194         wcn->hw->queues = 4;
1195
1196         SET_IEEE80211_DEV(wcn->hw, wcn->dev);
1197
1198         wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
1199         wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
1200
1201         wiphy_ext_feature_set(wcn->hw->wiphy,
1202                               NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1203
1204         return ret;
1205 }
1206
1207 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
1208                                           struct platform_device *pdev)
1209 {
1210         struct device_node *mmio_node;
1211         struct device_node *iris_node;
1212         struct resource *res;
1213         int index;
1214         int ret;
1215
1216         /* Set TX IRQ */
1217         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "tx");
1218         if (!res) {
1219                 wcn36xx_err("failed to get tx_irq\n");
1220                 return -ENOENT;
1221         }
1222         wcn->tx_irq = res->start;
1223
1224         /* Set RX IRQ */
1225         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "rx");
1226         if (!res) {
1227                 wcn36xx_err("failed to get rx_irq\n");
1228                 return -ENOENT;
1229         }
1230         wcn->rx_irq = res->start;
1231
1232         /* Acquire SMSM tx enable handle */
1233         wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev,
1234                         "tx-enable", &wcn->tx_enable_state_bit);
1235         if (IS_ERR(wcn->tx_enable_state)) {
1236                 wcn36xx_err("failed to get tx-enable state\n");
1237                 return PTR_ERR(wcn->tx_enable_state);
1238         }
1239
1240         /* Acquire SMSM tx rings empty handle */
1241         wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev,
1242                         "tx-rings-empty", &wcn->tx_rings_empty_state_bit);
1243         if (IS_ERR(wcn->tx_rings_empty_state)) {
1244                 wcn36xx_err("failed to get tx-rings-empty state\n");
1245                 return PTR_ERR(wcn->tx_rings_empty_state);
1246         }
1247
1248         mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0);
1249         if (!mmio_node) {
1250                 wcn36xx_err("failed to acquire qcom,mmio reference\n");
1251                 return -EINVAL;
1252         }
1253
1254         wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto");
1255
1256         /* Map the CCU memory */
1257         index = of_property_match_string(mmio_node, "reg-names", "ccu");
1258         wcn->ccu_base = of_iomap(mmio_node, index);
1259         if (!wcn->ccu_base) {
1260                 wcn36xx_err("failed to map ccu memory\n");
1261                 ret = -ENOMEM;
1262                 goto put_mmio_node;
1263         }
1264
1265         /* Map the DXE memory */
1266         index = of_property_match_string(mmio_node, "reg-names", "dxe");
1267         wcn->dxe_base = of_iomap(mmio_node, index);
1268         if (!wcn->dxe_base) {
1269                 wcn36xx_err("failed to map dxe memory\n");
1270                 ret = -ENOMEM;
1271                 goto unmap_ccu;
1272         }
1273
1274         /* External RF module */
1275         iris_node = of_get_child_by_name(mmio_node, "iris");
1276         if (iris_node) {
1277                 if (of_device_is_compatible(iris_node, "qcom,wcn3620"))
1278                         wcn->rf_id = RF_IRIS_WCN3620;
1279                 of_node_put(iris_node);
1280         }
1281
1282         of_node_put(mmio_node);
1283         return 0;
1284
1285 unmap_ccu:
1286         iounmap(wcn->ccu_base);
1287 put_mmio_node:
1288         of_node_put(mmio_node);
1289         return ret;
1290 }
1291
1292 static int wcn36xx_probe(struct platform_device *pdev)
1293 {
1294         struct ieee80211_hw *hw;
1295         struct wcn36xx *wcn;
1296         void *wcnss;
1297         int ret;
1298         const u8 *addr;
1299
1300         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1301
1302         wcnss = dev_get_drvdata(pdev->dev.parent);
1303
1304         hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1305         if (!hw) {
1306                 wcn36xx_err("failed to alloc hw\n");
1307                 ret = -ENOMEM;
1308                 goto out_err;
1309         }
1310         platform_set_drvdata(pdev, hw);
1311         wcn = hw->priv;
1312         wcn->hw = hw;
1313         wcn->dev = &pdev->dev;
1314         wcn->first_boot = true;
1315         mutex_init(&wcn->conf_mutex);
1316         mutex_init(&wcn->hal_mutex);
1317         mutex_init(&wcn->scan_lock);
1318
1319         ret = dma_set_mask_and_coherent(wcn->dev, DMA_BIT_MASK(32));
1320         if (ret < 0) {
1321                 wcn36xx_err("failed to set DMA mask: %d\n", ret);
1322                 goto out_wq;
1323         }
1324
1325         INIT_WORK(&wcn->scan_work, wcn36xx_hw_scan_worker);
1326
1327         wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw);
1328         if (IS_ERR(wcn->smd_channel)) {
1329                 wcn36xx_err("failed to open WLAN_CTRL channel\n");
1330                 ret = PTR_ERR(wcn->smd_channel);
1331                 goto out_wq;
1332         }
1333
1334         addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret);
1335         if (addr && ret != ETH_ALEN) {
1336                 wcn36xx_err("invalid local-mac-address\n");
1337                 ret = -EINVAL;
1338                 goto out_wq;
1339         } else if (addr) {
1340                 wcn36xx_info("mac address: %pM\n", addr);
1341                 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1342         }
1343
1344         ret = wcn36xx_platform_get_resources(wcn, pdev);
1345         if (ret)
1346                 goto out_wq;
1347
1348         wcn36xx_init_ieee80211(wcn);
1349         ret = ieee80211_register_hw(wcn->hw);
1350         if (ret)
1351                 goto out_unmap;
1352
1353         return 0;
1354
1355 out_unmap:
1356         iounmap(wcn->ccu_base);
1357         iounmap(wcn->dxe_base);
1358 out_wq:
1359         ieee80211_free_hw(hw);
1360 out_err:
1361         return ret;
1362 }
1363
1364 static int wcn36xx_remove(struct platform_device *pdev)
1365 {
1366         struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1367         struct wcn36xx *wcn = hw->priv;
1368         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1369
1370         release_firmware(wcn->nv);
1371
1372         ieee80211_unregister_hw(hw);
1373
1374         qcom_smem_state_put(wcn->tx_enable_state);
1375         qcom_smem_state_put(wcn->tx_rings_empty_state);
1376
1377         rpmsg_destroy_ept(wcn->smd_channel);
1378
1379         iounmap(wcn->dxe_base);
1380         iounmap(wcn->ccu_base);
1381
1382         mutex_destroy(&wcn->hal_mutex);
1383         ieee80211_free_hw(hw);
1384
1385         return 0;
1386 }
1387
1388 static const struct of_device_id wcn36xx_of_match[] = {
1389         { .compatible = "qcom,wcnss-wlan" },
1390         {}
1391 };
1392 MODULE_DEVICE_TABLE(of, wcn36xx_of_match);
1393
1394 static struct platform_driver wcn36xx_driver = {
1395         .probe      = wcn36xx_probe,
1396         .remove     = wcn36xx_remove,
1397         .driver         = {
1398                 .name   = "wcn36xx",
1399                 .of_match_table = wcn36xx_of_match,
1400         },
1401 };
1402
1403 module_platform_driver(wcn36xx_driver);
1404
1405 MODULE_LICENSE("Dual BSD/GPL");
1406 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1407 MODULE_FIRMWARE(WLAN_NV_FILE);