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 <net/ipv6.h> 29 #include "wcn36xx.h" 30 #include "testmode.h" 31 32 unsigned int wcn36xx_dbg_mask; 33 module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644); 34 MODULE_PARM_DESC(debug_mask, "Debugging mask"); 35 36 #define CHAN2G(_freq, _idx) { \ 37 .band = NL80211_BAND_2GHZ, \ 38 .center_freq = (_freq), \ 39 .hw_value = (_idx), \ 40 .max_power = 25, \ 41 } 42 43 #define CHAN5G(_freq, _idx, _phy_val) { \ 44 .band = NL80211_BAND_5GHZ, \ 45 .center_freq = (_freq), \ 46 .hw_value = (_phy_val) << HW_VALUE_PHY_SHIFT | HW_VALUE_CHANNEL(_idx), \ 47 .max_power = 25, \ 48 } 49 50 /* The wcn firmware expects channel values to matching 51 * their mnemonic values. So use these for .hw_value. */ 52 static struct ieee80211_channel wcn_2ghz_channels[] = { 53 CHAN2G(2412, 1), /* Channel 1 */ 54 CHAN2G(2417, 2), /* Channel 2 */ 55 CHAN2G(2422, 3), /* Channel 3 */ 56 CHAN2G(2427, 4), /* Channel 4 */ 57 CHAN2G(2432, 5), /* Channel 5 */ 58 CHAN2G(2437, 6), /* Channel 6 */ 59 CHAN2G(2442, 7), /* Channel 7 */ 60 CHAN2G(2447, 8), /* Channel 8 */ 61 CHAN2G(2452, 9), /* Channel 9 */ 62 CHAN2G(2457, 10), /* Channel 10 */ 63 CHAN2G(2462, 11), /* Channel 11 */ 64 CHAN2G(2467, 12), /* Channel 12 */ 65 CHAN2G(2472, 13), /* Channel 13 */ 66 CHAN2G(2484, 14) /* Channel 14 */ 67 68 }; 69 70 static struct ieee80211_channel wcn_5ghz_channels[] = { 71 CHAN5G(5180, 36, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 72 CHAN5G(5200, 40, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 73 CHAN5G(5220, 44, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 74 CHAN5G(5240, 48, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 75 CHAN5G(5260, 52, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 76 CHAN5G(5280, 56, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 77 CHAN5G(5300, 60, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 78 CHAN5G(5320, 64, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 79 CHAN5G(5500, 100, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 80 CHAN5G(5520, 104, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 81 CHAN5G(5540, 108, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 82 CHAN5G(5560, 112, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 83 CHAN5G(5580, 116, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 84 CHAN5G(5600, 120, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 85 CHAN5G(5620, 124, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 86 CHAN5G(5640, 128, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 87 CHAN5G(5660, 132, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 88 CHAN5G(5680, 136, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 89 CHAN5G(5700, 140, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 90 CHAN5G(5720, 144, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 91 CHAN5G(5745, 149, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW), 92 CHAN5G(5765, 153, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW), 93 CHAN5G(5785, 157, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH), 94 CHAN5G(5805, 161, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH), 95 CHAN5G(5825, 165, 0) 96 }; 97 98 #define RATE(_bitrate, _hw_rate, _flags) { \ 99 .bitrate = (_bitrate), \ 100 .flags = (_flags), \ 101 .hw_value = (_hw_rate), \ 102 .hw_value_short = (_hw_rate) \ 103 } 104 105 static struct ieee80211_rate wcn_2ghz_rates[] = { 106 RATE(10, HW_RATE_INDEX_1MBPS, 0), 107 RATE(20, HW_RATE_INDEX_2MBPS, IEEE80211_RATE_SHORT_PREAMBLE), 108 RATE(55, HW_RATE_INDEX_5_5MBPS, IEEE80211_RATE_SHORT_PREAMBLE), 109 RATE(110, HW_RATE_INDEX_11MBPS, IEEE80211_RATE_SHORT_PREAMBLE), 110 RATE(60, HW_RATE_INDEX_6MBPS, 0), 111 RATE(90, HW_RATE_INDEX_9MBPS, 0), 112 RATE(120, HW_RATE_INDEX_12MBPS, 0), 113 RATE(180, HW_RATE_INDEX_18MBPS, 0), 114 RATE(240, HW_RATE_INDEX_24MBPS, 0), 115 RATE(360, HW_RATE_INDEX_36MBPS, 0), 116 RATE(480, HW_RATE_INDEX_48MBPS, 0), 117 RATE(540, HW_RATE_INDEX_54MBPS, 0) 118 }; 119 120 static struct ieee80211_rate wcn_5ghz_rates[] = { 121 RATE(60, HW_RATE_INDEX_6MBPS, 0), 122 RATE(90, HW_RATE_INDEX_9MBPS, 0), 123 RATE(120, HW_RATE_INDEX_12MBPS, 0), 124 RATE(180, HW_RATE_INDEX_18MBPS, 0), 125 RATE(240, HW_RATE_INDEX_24MBPS, 0), 126 RATE(360, HW_RATE_INDEX_36MBPS, 0), 127 RATE(480, HW_RATE_INDEX_48MBPS, 0), 128 RATE(540, HW_RATE_INDEX_54MBPS, 0) 129 }; 130 131 static struct ieee80211_supported_band wcn_band_2ghz = { 132 .channels = wcn_2ghz_channels, 133 .n_channels = ARRAY_SIZE(wcn_2ghz_channels), 134 .bitrates = wcn_2ghz_rates, 135 .n_bitrates = ARRAY_SIZE(wcn_2ghz_rates), 136 .ht_cap = { 137 .cap = IEEE80211_HT_CAP_GRN_FLD | 138 IEEE80211_HT_CAP_SGI_20 | 139 IEEE80211_HT_CAP_DSSSCCK40 | 140 IEEE80211_HT_CAP_LSIG_TXOP_PROT | 141 IEEE80211_HT_CAP_SGI_40 | 142 IEEE80211_HT_CAP_SUP_WIDTH_20_40, 143 .ht_supported = true, 144 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 145 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16, 146 .mcs = { 147 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, 148 .rx_highest = cpu_to_le16(72), 149 .tx_params = IEEE80211_HT_MCS_TX_DEFINED, 150 } 151 } 152 }; 153 154 static struct ieee80211_supported_band wcn_band_5ghz = { 155 .channels = wcn_5ghz_channels, 156 .n_channels = ARRAY_SIZE(wcn_5ghz_channels), 157 .bitrates = wcn_5ghz_rates, 158 .n_bitrates = ARRAY_SIZE(wcn_5ghz_rates), 159 .ht_cap = { 160 .cap = IEEE80211_HT_CAP_GRN_FLD | 161 IEEE80211_HT_CAP_SGI_20 | 162 IEEE80211_HT_CAP_DSSSCCK40 | 163 IEEE80211_HT_CAP_LSIG_TXOP_PROT | 164 IEEE80211_HT_CAP_SGI_40 | 165 IEEE80211_HT_CAP_SUP_WIDTH_20_40, 166 .ht_supported = true, 167 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 168 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16, 169 .mcs = { 170 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, 171 .rx_highest = cpu_to_le16(150), 172 .tx_params = IEEE80211_HT_MCS_TX_DEFINED, 173 } 174 } 175 }; 176 177 #ifdef CONFIG_PM 178 179 static const struct wiphy_wowlan_support wowlan_support = { 180 .flags = WIPHY_WOWLAN_ANY | 181 WIPHY_WOWLAN_MAGIC_PKT | 182 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY 183 }; 184 185 #endif 186 187 static inline u8 get_sta_index(struct ieee80211_vif *vif, 188 struct wcn36xx_sta *sta_priv) 189 { 190 return NL80211_IFTYPE_STATION == vif->type ? 191 sta_priv->bss_sta_index : 192 sta_priv->sta_index; 193 } 194 195 static const char * const wcn36xx_caps_names[] = { 196 "MCC", /* 0 */ 197 "P2P", /* 1 */ 198 "DOT11AC", /* 2 */ 199 "SLM_SESSIONIZATION", /* 3 */ 200 "DOT11AC_OPMODE", /* 4 */ 201 "SAP32STA", /* 5 */ 202 "TDLS", /* 6 */ 203 "P2P_GO_NOA_DECOUPLE_INIT_SCAN",/* 7 */ 204 "WLANACTIVE_OFFLOAD", /* 8 */ 205 "BEACON_OFFLOAD", /* 9 */ 206 "SCAN_OFFLOAD", /* 10 */ 207 "ROAM_OFFLOAD", /* 11 */ 208 "BCN_MISS_OFFLOAD", /* 12 */ 209 "STA_POWERSAVE", /* 13 */ 210 "STA_ADVANCED_PWRSAVE", /* 14 */ 211 "AP_UAPSD", /* 15 */ 212 "AP_DFS", /* 16 */ 213 "BLOCKACK", /* 17 */ 214 "PHY_ERR", /* 18 */ 215 "BCN_FILTER", /* 19 */ 216 "RTT", /* 20 */ 217 "RATECTRL", /* 21 */ 218 "WOW", /* 22 */ 219 "WLAN_ROAM_SCAN_OFFLOAD", /* 23 */ 220 "SPECULATIVE_PS_POLL", /* 24 */ 221 "SCAN_SCH", /* 25 */ 222 "IBSS_HEARTBEAT_OFFLOAD", /* 26 */ 223 "WLAN_SCAN_OFFLOAD", /* 27 */ 224 "WLAN_PERIODIC_TX_PTRN", /* 28 */ 225 "ADVANCE_TDLS", /* 29 */ 226 "BATCH_SCAN", /* 30 */ 227 "FW_IN_TX_PATH", /* 31 */ 228 "EXTENDED_NSOFFLOAD_SLOT", /* 32 */ 229 "CH_SWITCH_V1", /* 33 */ 230 "HT40_OBSS_SCAN", /* 34 */ 231 "UPDATE_CHANNEL_LIST", /* 35 */ 232 "WLAN_MCADDR_FLT", /* 36 */ 233 "WLAN_CH144", /* 37 */ 234 "NAN", /* 38 */ 235 "TDLS_SCAN_COEXISTENCE", /* 39 */ 236 "LINK_LAYER_STATS_MEAS", /* 40 */ 237 "MU_MIMO", /* 41 */ 238 "EXTENDED_SCAN", /* 42 */ 239 "DYNAMIC_WMM_PS", /* 43 */ 240 "MAC_SPOOFED_SCAN", /* 44 */ 241 "BMU_ERROR_GENERIC_RECOVERY", /* 45 */ 242 "DISA", /* 46 */ 243 "FW_STATS", /* 47 */ 244 "WPS_PRBRSP_TMPL", /* 48 */ 245 "BCN_IE_FLT_DELTA", /* 49 */ 246 "TDLS_OFF_CHANNEL", /* 51 */ 247 "RTT3", /* 52 */ 248 "MGMT_FRAME_LOGGING", /* 53 */ 249 "ENHANCED_TXBD_COMPLETION", /* 54 */ 250 "LOGGING_ENHANCEMENT", /* 55 */ 251 "EXT_SCAN_ENHANCED", /* 56 */ 252 "MEMORY_DUMP_SUPPORTED", /* 57 */ 253 "PER_PKT_STATS_SUPPORTED", /* 58 */ 254 "EXT_LL_STAT", /* 60 */ 255 "WIFI_CONFIG", /* 61 */ 256 "ANTENNA_DIVERSITY_SELECTION", /* 62 */ 257 }; 258 259 static const char *wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x) 260 { 261 if (x >= ARRAY_SIZE(wcn36xx_caps_names)) 262 return "UNKNOWN"; 263 return wcn36xx_caps_names[x]; 264 } 265 266 static void wcn36xx_feat_caps_info(struct wcn36xx *wcn) 267 { 268 int i; 269 270 for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) { 271 if (get_feat_caps(wcn->fw_feat_caps, i)) 272 wcn36xx_dbg(WCN36XX_DBG_MAC, "FW Cap %s\n", wcn36xx_get_cap_name(i)); 273 } 274 } 275 276 static int wcn36xx_start(struct ieee80211_hw *hw) 277 { 278 struct wcn36xx *wcn = hw->priv; 279 int ret; 280 281 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n"); 282 283 /* SMD initialization */ 284 ret = wcn36xx_smd_open(wcn); 285 if (ret) { 286 wcn36xx_err("Failed to open smd channel: %d\n", ret); 287 goto out_err; 288 } 289 290 /* Allocate memory pools for Mgmt BD headers and Data BD headers */ 291 ret = wcn36xx_dxe_allocate_mem_pools(wcn); 292 if (ret) { 293 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret); 294 goto out_smd_close; 295 } 296 297 ret = wcn36xx_dxe_alloc_ctl_blks(wcn); 298 if (ret) { 299 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret); 300 goto out_free_dxe_pool; 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_dxe_ctl; 307 } 308 309 ret = wcn36xx_smd_start(wcn); 310 if (ret) { 311 wcn36xx_err("Failed to start chip\n"); 312 goto out_free_dxe_ctl; 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_dxe_ctl: 340 wcn36xx_dxe_free_ctl_blks(wcn); 341 out_free_dxe_pool: 342 wcn36xx_dxe_free_mem_pools(wcn); 343 out_smd_close: 344 wcn36xx_smd_close(wcn); 345 out_err: 346 return ret; 347 } 348 349 static void wcn36xx_stop(struct ieee80211_hw *hw) 350 { 351 struct wcn36xx *wcn = hw->priv; 352 353 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n"); 354 355 mutex_lock(&wcn->scan_lock); 356 if (wcn->scan_req) { 357 struct cfg80211_scan_info scan_info = { 358 .aborted = true, 359 }; 360 361 ieee80211_scan_completed(wcn->hw, &scan_info); 362 } 363 wcn->scan_req = NULL; 364 mutex_unlock(&wcn->scan_lock); 365 366 wcn36xx_debugfs_exit(wcn); 367 wcn36xx_smd_stop(wcn); 368 wcn36xx_dxe_deinit(wcn); 369 wcn36xx_smd_close(wcn); 370 371 wcn36xx_dxe_free_mem_pools(wcn); 372 wcn36xx_dxe_free_ctl_blks(wcn); 373 } 374 375 static void wcn36xx_change_ps(struct wcn36xx *wcn, bool enable) 376 { 377 struct ieee80211_vif *vif = NULL; 378 struct wcn36xx_vif *tmp; 379 380 list_for_each_entry(tmp, &wcn->vif_list, list) { 381 vif = wcn36xx_priv_to_vif(tmp); 382 if (enable && !wcn->sw_scan) { 383 if (vif->bss_conf.ps) /* ps allowed ? */ 384 wcn36xx_pmc_enter_bmps_state(wcn, vif); 385 } else { 386 wcn36xx_pmc_exit_bmps_state(wcn, vif); 387 } 388 } 389 } 390 391 static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch) 392 { 393 struct ieee80211_vif *vif = NULL; 394 struct wcn36xx_vif *tmp; 395 396 list_for_each_entry(tmp, &wcn->vif_list, list) { 397 vif = wcn36xx_priv_to_vif(tmp); 398 wcn36xx_smd_switch_channel(wcn, vif, ch); 399 } 400 } 401 402 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed) 403 { 404 struct wcn36xx *wcn = hw->priv; 405 406 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed); 407 408 mutex_lock(&wcn->conf_mutex); 409 410 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 411 int ch = WCN36XX_HW_CHANNEL(wcn); 412 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n", 413 ch); 414 415 if (wcn->sw_scan_opchannel == ch && wcn->sw_scan_channel) { 416 /* If channel is the initial operating channel, we may 417 * want to receive/transmit regular data packets, then 418 * simply stop the scan session and exit PS mode. 419 */ 420 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN, 421 wcn->sw_scan_vif); 422 wcn->sw_scan_channel = 0; 423 } else if (wcn->sw_scan) { 424 /* A scan is ongoing, do not change the operating 425 * channel, but start a scan session on the channel. 426 */ 427 wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN, 428 wcn->sw_scan_vif); 429 wcn36xx_smd_start_scan(wcn, ch); 430 wcn->sw_scan_channel = ch; 431 } else { 432 wcn36xx_change_opchannel(wcn, ch); 433 } 434 } 435 436 if (changed & IEEE80211_CONF_CHANGE_PS) 437 wcn36xx_change_ps(wcn, hw->conf.flags & IEEE80211_CONF_PS); 438 439 if (changed & IEEE80211_CONF_CHANGE_IDLE) { 440 if (hw->conf.flags & IEEE80211_CONF_IDLE) 441 wcn36xx_smd_enter_imps(wcn); 442 else 443 wcn36xx_smd_exit_imps(wcn); 444 } 445 446 mutex_unlock(&wcn->conf_mutex); 447 448 return 0; 449 } 450 451 static void wcn36xx_configure_filter(struct ieee80211_hw *hw, 452 unsigned int changed, 453 unsigned int *total, u64 multicast) 454 { 455 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp; 456 struct wcn36xx *wcn = hw->priv; 457 struct wcn36xx_vif *tmp; 458 struct ieee80211_vif *vif = NULL; 459 460 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n"); 461 462 mutex_lock(&wcn->conf_mutex); 463 464 *total &= FIF_ALLMULTI; 465 466 fp = (void *)(unsigned long)multicast; 467 list_for_each_entry(tmp, &wcn->vif_list, list) { 468 vif = wcn36xx_priv_to_vif(tmp); 469 470 /* FW handles MC filtering only when connected as STA */ 471 if (*total & FIF_ALLMULTI) 472 wcn36xx_smd_set_mc_list(wcn, vif, NULL); 473 else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc) 474 wcn36xx_smd_set_mc_list(wcn, vif, fp); 475 } 476 477 mutex_unlock(&wcn->conf_mutex); 478 kfree(fp); 479 } 480 481 static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw, 482 struct netdev_hw_addr_list *mc_list) 483 { 484 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp; 485 struct netdev_hw_addr *ha; 486 487 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n"); 488 fp = kzalloc(sizeof(*fp), GFP_ATOMIC); 489 if (!fp) { 490 wcn36xx_err("Out of memory setting filters.\n"); 491 return 0; 492 } 493 494 fp->mc_addr_count = 0; 495 /* update multicast filtering parameters */ 496 if (netdev_hw_addr_list_count(mc_list) <= 497 WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) { 498 netdev_hw_addr_list_for_each(ha, mc_list) { 499 memcpy(fp->mc_addr[fp->mc_addr_count], 500 ha->addr, ETH_ALEN); 501 fp->mc_addr_count++; 502 } 503 } 504 505 return (u64)(unsigned long)fp; 506 } 507 508 static void wcn36xx_tx(struct ieee80211_hw *hw, 509 struct ieee80211_tx_control *control, 510 struct sk_buff *skb) 511 { 512 struct wcn36xx *wcn = hw->priv; 513 struct wcn36xx_sta *sta_priv = NULL; 514 515 if (control->sta) 516 sta_priv = wcn36xx_sta_to_priv(control->sta); 517 518 if (wcn36xx_start_tx(wcn, sta_priv, skb)) 519 ieee80211_free_txskb(wcn->hw, skb); 520 } 521 522 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 523 struct ieee80211_vif *vif, 524 struct ieee80211_sta *sta, 525 struct ieee80211_key_conf *key_conf) 526 { 527 struct wcn36xx *wcn = hw->priv; 528 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 529 struct wcn36xx_sta *sta_priv = sta ? wcn36xx_sta_to_priv(sta) : NULL; 530 int ret = 0; 531 u8 key[WLAN_MAX_KEY_LEN]; 532 533 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n"); 534 wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n", 535 cmd, key_conf->cipher, key_conf->keyidx, 536 key_conf->keylen, key_conf->flags); 537 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ", 538 key_conf->key, 539 key_conf->keylen); 540 541 mutex_lock(&wcn->conf_mutex); 542 543 switch (key_conf->cipher) { 544 case WLAN_CIPHER_SUITE_WEP40: 545 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40; 546 break; 547 case WLAN_CIPHER_SUITE_WEP104: 548 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP104; 549 break; 550 case WLAN_CIPHER_SUITE_CCMP: 551 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP; 552 break; 553 case WLAN_CIPHER_SUITE_TKIP: 554 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP; 555 break; 556 default: 557 wcn36xx_err("Unsupported key type 0x%x\n", 558 key_conf->cipher); 559 ret = -EOPNOTSUPP; 560 goto out; 561 } 562 563 switch (cmd) { 564 case SET_KEY: 565 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) { 566 /* 567 * Supplicant is sending key in the wrong order: 568 * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b) 569 * but HW expects it to be in the order as described in 570 * IEEE 802.11 spec (see chapter 11.7) like this: 571 * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b) 572 */ 573 memcpy(key, key_conf->key, 16); 574 memcpy(key + 16, key_conf->key + 24, 8); 575 memcpy(key + 24, key_conf->key + 16, 8); 576 } else { 577 memcpy(key, key_conf->key, key_conf->keylen); 578 } 579 580 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) { 581 sta_priv->is_data_encrypted = true; 582 /* Reconfigure bss with encrypt_type */ 583 if (NL80211_IFTYPE_STATION == vif->type) { 584 wcn36xx_smd_config_bss(wcn, 585 vif, 586 sta, 587 sta->addr, 588 true); 589 wcn36xx_smd_config_sta(wcn, vif, sta); 590 } 591 592 wcn36xx_smd_set_stakey(wcn, 593 vif_priv->encrypt_type, 594 key_conf->keyidx, 595 key_conf->keylen, 596 key, 597 get_sta_index(vif, sta_priv)); 598 } else { 599 wcn36xx_smd_set_bsskey(wcn, 600 vif_priv->encrypt_type, 601 vif_priv->bss_index, 602 key_conf->keyidx, 603 key_conf->keylen, 604 key); 605 606 if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) || 607 (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) { 608 list_for_each_entry(sta_priv, 609 &vif_priv->sta_list, list) { 610 sta_priv->is_data_encrypted = true; 611 wcn36xx_smd_set_stakey(wcn, 612 vif_priv->encrypt_type, 613 key_conf->keyidx, 614 key_conf->keylen, 615 key, 616 get_sta_index(vif, sta_priv)); 617 } 618 } 619 } 620 break; 621 case DISABLE_KEY: 622 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) { 623 if (vif_priv->bss_index != WCN36XX_HAL_BSS_INVALID_IDX) 624 wcn36xx_smd_remove_bsskey(wcn, 625 vif_priv->encrypt_type, 626 vif_priv->bss_index, 627 key_conf->keyidx); 628 629 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE; 630 } else { 631 sta_priv->is_data_encrypted = false; 632 /* do not remove key if disassociated */ 633 if (sta_priv->aid) 634 wcn36xx_smd_remove_stakey(wcn, 635 vif_priv->encrypt_type, 636 key_conf->keyidx, 637 get_sta_index(vif, sta_priv)); 638 } 639 break; 640 default: 641 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd); 642 ret = -EOPNOTSUPP; 643 goto out; 644 } 645 646 out: 647 mutex_unlock(&wcn->conf_mutex); 648 649 return ret; 650 } 651 652 static int wcn36xx_hw_scan(struct ieee80211_hw *hw, 653 struct ieee80211_vif *vif, 654 struct ieee80211_scan_request *hw_req) 655 { 656 struct wcn36xx *wcn = hw->priv; 657 658 if (!get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) { 659 /* fallback to mac80211 software scan */ 660 return 1; 661 } 662 663 /* Firmware scan offload is limited to 48 channels, fallback to 664 * software driven scanning otherwise. 665 */ 666 if (hw_req->req.n_channels > 48) { 667 wcn36xx_warn("Offload scan aborted, n_channels=%u", 668 hw_req->req.n_channels); 669 return 1; 670 } 671 672 mutex_lock(&wcn->scan_lock); 673 if (wcn->scan_req) { 674 mutex_unlock(&wcn->scan_lock); 675 return -EBUSY; 676 } 677 678 wcn->scan_aborted = false; 679 wcn->scan_req = &hw_req->req; 680 681 mutex_unlock(&wcn->scan_lock); 682 683 wcn36xx_smd_update_channel_list(wcn, &hw_req->req); 684 return wcn36xx_smd_start_hw_scan(wcn, vif, &hw_req->req); 685 } 686 687 static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw, 688 struct ieee80211_vif *vif) 689 { 690 struct wcn36xx *wcn = hw->priv; 691 692 mutex_lock(&wcn->scan_lock); 693 wcn->scan_aborted = true; 694 mutex_unlock(&wcn->scan_lock); 695 696 if (get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) { 697 /* ieee80211_scan_completed will be called on FW scan 698 * indication */ 699 wcn36xx_smd_stop_hw_scan(wcn); 700 } 701 } 702 703 static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw, 704 struct ieee80211_vif *vif, 705 const u8 *mac_addr) 706 { 707 struct wcn36xx *wcn = hw->priv; 708 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 709 710 wcn->sw_scan = true; 711 wcn->sw_scan_vif = vif; 712 wcn->sw_scan_channel = 0; 713 if (vif_priv->sta_assoc) 714 wcn->sw_scan_opchannel = WCN36XX_HW_CHANNEL(wcn); 715 else 716 wcn->sw_scan_opchannel = 0; 717 } 718 719 static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw, 720 struct ieee80211_vif *vif) 721 { 722 struct wcn36xx *wcn = hw->priv; 723 724 /* ensure that any scan session is finished */ 725 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN, wcn->sw_scan_vif); 726 wcn->sw_scan = false; 727 wcn->sw_scan_opchannel = 0; 728 } 729 730 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta, 731 enum nl80211_band band) 732 { 733 int i, size; 734 u16 *rates_table; 735 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta); 736 u32 rates = sta->supp_rates[band]; 737 738 memset(&sta_priv->supported_rates, 0, 739 sizeof(sta_priv->supported_rates)); 740 sta_priv->supported_rates.op_rate_mode = STA_11n; 741 742 size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates); 743 rates_table = sta_priv->supported_rates.dsss_rates; 744 if (band == NL80211_BAND_2GHZ) { 745 for (i = 0; i < size; i++) { 746 if (rates & 0x01) { 747 rates_table[i] = wcn_2ghz_rates[i].hw_value; 748 rates = rates >> 1; 749 } 750 } 751 } 752 753 size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates); 754 rates_table = sta_priv->supported_rates.ofdm_rates; 755 for (i = 0; i < size; i++) { 756 if (rates & 0x01) { 757 rates_table[i] = wcn_5ghz_rates[i].hw_value; 758 rates = rates >> 1; 759 } 760 } 761 762 if (sta->ht_cap.ht_supported) { 763 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) > 764 sizeof(sta_priv->supported_rates.supported_mcs_set)); 765 memcpy(sta_priv->supported_rates.supported_mcs_set, 766 sta->ht_cap.mcs.rx_mask, 767 sizeof(sta->ht_cap.mcs.rx_mask)); 768 } 769 770 if (sta->vht_cap.vht_supported) { 771 sta_priv->supported_rates.op_rate_mode = STA_11ac; 772 sta_priv->supported_rates.vht_rx_mcs_map = 773 sta->vht_cap.vht_mcs.rx_mcs_map; 774 sta_priv->supported_rates.vht_tx_mcs_map = 775 sta->vht_cap.vht_mcs.tx_mcs_map; 776 } 777 } 778 779 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates) 780 { 781 u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = { 782 HW_RATE_INDEX_6MBPS, 783 HW_RATE_INDEX_9MBPS, 784 HW_RATE_INDEX_12MBPS, 785 HW_RATE_INDEX_18MBPS, 786 HW_RATE_INDEX_24MBPS, 787 HW_RATE_INDEX_36MBPS, 788 HW_RATE_INDEX_48MBPS, 789 HW_RATE_INDEX_54MBPS 790 }; 791 u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = { 792 HW_RATE_INDEX_1MBPS, 793 HW_RATE_INDEX_2MBPS, 794 HW_RATE_INDEX_5_5MBPS, 795 HW_RATE_INDEX_11MBPS 796 }; 797 798 rates->op_rate_mode = STA_11n; 799 memcpy(rates->dsss_rates, dsss_rates, 800 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES); 801 memcpy(rates->ofdm_rates, ofdm_rates, 802 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES); 803 rates->supported_mcs_set[0] = 0xFF; 804 } 805 806 void wcn36xx_set_default_rates_v1(struct wcn36xx_hal_supported_rates_v1 *rates) 807 { 808 rates->op_rate_mode = STA_11ac; 809 rates->vht_rx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9; 810 rates->vht_tx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9; 811 } 812 813 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw, 814 struct ieee80211_vif *vif, 815 struct ieee80211_bss_conf *bss_conf, 816 u32 changed) 817 { 818 struct wcn36xx *wcn = hw->priv; 819 struct sk_buff *skb = NULL; 820 u16 tim_off, tim_len; 821 enum wcn36xx_hal_link_state link_state; 822 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 823 824 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n", 825 vif, changed); 826 827 mutex_lock(&wcn->conf_mutex); 828 829 if (changed & BSS_CHANGED_BEACON_INFO) { 830 wcn36xx_dbg(WCN36XX_DBG_MAC, 831 "mac bss changed dtim period %d\n", 832 bss_conf->dtim_period); 833 834 vif_priv->dtim_period = bss_conf->dtim_period; 835 } 836 837 if (changed & BSS_CHANGED_BSSID) { 838 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n", 839 bss_conf->bssid); 840 841 if (!is_zero_ether_addr(bss_conf->bssid)) { 842 vif_priv->is_joining = true; 843 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX; 844 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr, 845 WCN36XX_HAL_LINK_PREASSOC_STATE); 846 wcn36xx_smd_join(wcn, bss_conf->bssid, 847 vif->addr, WCN36XX_HW_CHANNEL(wcn)); 848 wcn36xx_smd_config_bss(wcn, vif, NULL, 849 bss_conf->bssid, false); 850 } else { 851 vif_priv->is_joining = false; 852 wcn36xx_smd_delete_bss(wcn, vif); 853 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr, 854 WCN36XX_HAL_LINK_IDLE_STATE); 855 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE; 856 } 857 } 858 859 if (changed & BSS_CHANGED_SSID) { 860 wcn36xx_dbg(WCN36XX_DBG_MAC, 861 "mac bss changed ssid\n"); 862 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ", 863 bss_conf->ssid, bss_conf->ssid_len); 864 865 vif_priv->ssid.length = bss_conf->ssid_len; 866 memcpy(&vif_priv->ssid.ssid, 867 bss_conf->ssid, 868 bss_conf->ssid_len); 869 } 870 871 if (changed & BSS_CHANGED_ASSOC) { 872 vif_priv->is_joining = false; 873 if (bss_conf->assoc) { 874 struct ieee80211_sta *sta; 875 struct wcn36xx_sta *sta_priv; 876 877 wcn36xx_dbg(WCN36XX_DBG_MAC, 878 "mac assoc bss %pM vif %pM AID=%d\n", 879 bss_conf->bssid, 880 vif->addr, 881 bss_conf->aid); 882 883 vif_priv->sta_assoc = true; 884 885 /* 886 * Holding conf_mutex ensures mutal exclusion with 887 * wcn36xx_sta_remove() and as such ensures that sta 888 * won't be freed while we're operating on it. As such 889 * we do not need to hold the rcu_read_lock(). 890 */ 891 sta = ieee80211_find_sta(vif, bss_conf->bssid); 892 if (!sta) { 893 wcn36xx_err("sta %pM is not found\n", 894 bss_conf->bssid); 895 goto out; 896 } 897 sta_priv = wcn36xx_sta_to_priv(sta); 898 899 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn)); 900 901 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, 902 vif->addr, 903 WCN36XX_HAL_LINK_POSTASSOC_STATE); 904 wcn36xx_smd_config_bss(wcn, vif, sta, 905 bss_conf->bssid, 906 true); 907 sta_priv->aid = bss_conf->aid; 908 /* 909 * config_sta must be called from because this is the 910 * place where AID is available. 911 */ 912 wcn36xx_smd_config_sta(wcn, vif, sta); 913 wcn36xx_enable_keep_alive_null_packet(wcn, vif); 914 } else { 915 wcn36xx_dbg(WCN36XX_DBG_MAC, 916 "disassociated bss %pM vif %pM AID=%d\n", 917 bss_conf->bssid, 918 vif->addr, 919 bss_conf->aid); 920 vif_priv->sta_assoc = false; 921 wcn36xx_smd_set_link_st(wcn, 922 bss_conf->bssid, 923 vif->addr, 924 WCN36XX_HAL_LINK_IDLE_STATE); 925 } 926 } 927 928 if (changed & BSS_CHANGED_AP_PROBE_RESP) { 929 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n"); 930 skb = ieee80211_proberesp_get(hw, vif); 931 if (!skb) { 932 wcn36xx_err("failed to alloc probereq skb\n"); 933 goto out; 934 } 935 936 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb); 937 dev_kfree_skb(skb); 938 } 939 940 if (changed & BSS_CHANGED_BEACON_ENABLED || 941 changed & BSS_CHANGED_BEACON) { 942 wcn36xx_dbg(WCN36XX_DBG_MAC, 943 "mac bss changed beacon enabled %d\n", 944 bss_conf->enable_beacon); 945 946 if (bss_conf->enable_beacon) { 947 vif_priv->dtim_period = bss_conf->dtim_period; 948 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX; 949 wcn36xx_smd_config_bss(wcn, vif, NULL, 950 vif->addr, false); 951 skb = ieee80211_beacon_get_tim(hw, vif, &tim_off, 952 &tim_len); 953 if (!skb) { 954 wcn36xx_err("failed to alloc beacon skb\n"); 955 goto out; 956 } 957 wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0); 958 dev_kfree_skb(skb); 959 960 if (vif->type == NL80211_IFTYPE_ADHOC || 961 vif->type == NL80211_IFTYPE_MESH_POINT) 962 link_state = WCN36XX_HAL_LINK_IBSS_STATE; 963 else 964 link_state = WCN36XX_HAL_LINK_AP_STATE; 965 966 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr, 967 link_state); 968 } else { 969 wcn36xx_smd_delete_bss(wcn, vif); 970 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr, 971 WCN36XX_HAL_LINK_IDLE_STATE); 972 } 973 } 974 out: 975 976 mutex_unlock(&wcn->conf_mutex); 977 } 978 979 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */ 980 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 981 { 982 struct wcn36xx *wcn = hw->priv; 983 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value); 984 985 mutex_lock(&wcn->conf_mutex); 986 wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value); 987 mutex_unlock(&wcn->conf_mutex); 988 989 return 0; 990 } 991 992 static void wcn36xx_remove_interface(struct ieee80211_hw *hw, 993 struct ieee80211_vif *vif) 994 { 995 struct wcn36xx *wcn = hw->priv; 996 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 997 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif); 998 999 mutex_lock(&wcn->conf_mutex); 1000 1001 list_del(&vif_priv->list); 1002 wcn36xx_smd_delete_sta_self(wcn, vif->addr); 1003 1004 mutex_unlock(&wcn->conf_mutex); 1005 } 1006 1007 static int wcn36xx_add_interface(struct ieee80211_hw *hw, 1008 struct ieee80211_vif *vif) 1009 { 1010 struct wcn36xx *wcn = hw->priv; 1011 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1012 1013 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n", 1014 vif, vif->type); 1015 1016 if (!(NL80211_IFTYPE_STATION == vif->type || 1017 NL80211_IFTYPE_AP == vif->type || 1018 NL80211_IFTYPE_ADHOC == vif->type || 1019 NL80211_IFTYPE_MESH_POINT == vif->type)) { 1020 wcn36xx_warn("Unsupported interface type requested: %d\n", 1021 vif->type); 1022 return -EOPNOTSUPP; 1023 } 1024 1025 mutex_lock(&wcn->conf_mutex); 1026 1027 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX; 1028 INIT_LIST_HEAD(&vif_priv->sta_list); 1029 list_add(&vif_priv->list, &wcn->vif_list); 1030 wcn36xx_smd_add_sta_self(wcn, vif); 1031 1032 mutex_unlock(&wcn->conf_mutex); 1033 1034 return 0; 1035 } 1036 1037 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1038 struct ieee80211_sta *sta) 1039 { 1040 struct wcn36xx *wcn = hw->priv; 1041 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1042 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta); 1043 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n", 1044 vif, sta->addr); 1045 1046 mutex_lock(&wcn->conf_mutex); 1047 1048 spin_lock_init(&sta_priv->ampdu_lock); 1049 sta_priv->vif = vif_priv; 1050 list_add(&sta_priv->list, &vif_priv->sta_list); 1051 1052 /* 1053 * For STA mode HW will be configured on BSS_CHANGED_ASSOC because 1054 * at this stage AID is not available yet. 1055 */ 1056 if (NL80211_IFTYPE_STATION != vif->type) { 1057 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn)); 1058 sta_priv->aid = sta->aid; 1059 wcn36xx_smd_config_sta(wcn, vif, sta); 1060 } 1061 1062 mutex_unlock(&wcn->conf_mutex); 1063 1064 return 0; 1065 } 1066 1067 static int wcn36xx_sta_remove(struct ieee80211_hw *hw, 1068 struct ieee80211_vif *vif, 1069 struct ieee80211_sta *sta) 1070 { 1071 struct wcn36xx *wcn = hw->priv; 1072 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta); 1073 1074 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n", 1075 vif, sta->addr, sta_priv->sta_index); 1076 1077 mutex_lock(&wcn->conf_mutex); 1078 1079 list_del(&sta_priv->list); 1080 wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index); 1081 sta_priv->vif = NULL; 1082 1083 mutex_unlock(&wcn->conf_mutex); 1084 1085 return 0; 1086 } 1087 1088 #ifdef CONFIG_PM 1089 1090 static struct ieee80211_vif *wcn36xx_get_first_assoc_vif(struct wcn36xx *wcn) 1091 { 1092 struct wcn36xx_vif *vif_priv = NULL; 1093 struct ieee80211_vif *vif = NULL; 1094 1095 list_for_each_entry(vif_priv, &wcn->vif_list, list) { 1096 if (vif_priv->sta_assoc) { 1097 vif = wcn36xx_priv_to_vif(vif_priv); 1098 break; 1099 } 1100 } 1101 return vif; 1102 } 1103 1104 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow) 1105 { 1106 struct wcn36xx *wcn = hw->priv; 1107 struct ieee80211_vif *vif = NULL; 1108 int ret = 0; 1109 1110 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n"); 1111 1112 mutex_lock(&wcn->conf_mutex); 1113 1114 vif = wcn36xx_get_first_assoc_vif(wcn); 1115 if (vif) { 1116 ret = wcn36xx_smd_arp_offload(wcn, vif, true); 1117 if (ret) 1118 goto out; 1119 ret = wcn36xx_smd_ipv6_ns_offload(wcn, vif, true); 1120 if (ret) 1121 goto out; 1122 ret = wcn36xx_smd_gtk_offload(wcn, vif, true); 1123 if (ret) 1124 goto out; 1125 ret = wcn36xx_smd_set_power_params(wcn, true); 1126 if (ret) 1127 goto out; 1128 ret = wcn36xx_smd_wlan_host_suspend_ind(wcn); 1129 } 1130 1131 /* Disable IRQ, we don't want to handle any packet before mac80211 is 1132 * resumed and ready to receive packets. 1133 */ 1134 disable_irq(wcn->tx_irq); 1135 disable_irq(wcn->rx_irq); 1136 1137 out: 1138 mutex_unlock(&wcn->conf_mutex); 1139 return ret; 1140 } 1141 1142 static int wcn36xx_resume(struct ieee80211_hw *hw) 1143 { 1144 struct wcn36xx *wcn = hw->priv; 1145 struct ieee80211_vif *vif = NULL; 1146 1147 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n"); 1148 1149 mutex_lock(&wcn->conf_mutex); 1150 vif = wcn36xx_get_first_assoc_vif(wcn); 1151 if (vif) { 1152 wcn36xx_smd_host_resume(wcn); 1153 wcn36xx_smd_set_power_params(wcn, false); 1154 wcn36xx_smd_gtk_offload_get_info(wcn, vif); 1155 wcn36xx_smd_gtk_offload(wcn, vif, false); 1156 wcn36xx_smd_ipv6_ns_offload(wcn, vif, false); 1157 wcn36xx_smd_arp_offload(wcn, vif, false); 1158 } 1159 1160 enable_irq(wcn->tx_irq); 1161 enable_irq(wcn->rx_irq); 1162 1163 mutex_unlock(&wcn->conf_mutex); 1164 1165 return 0; 1166 } 1167 1168 static void wcn36xx_set_rekey_data(struct ieee80211_hw *hw, 1169 struct ieee80211_vif *vif, 1170 struct cfg80211_gtk_rekey_data *data) 1171 { 1172 struct wcn36xx *wcn = hw->priv; 1173 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1174 1175 mutex_lock(&wcn->conf_mutex); 1176 1177 memcpy(vif_priv->rekey_data.kek, data->kek, NL80211_KEK_LEN); 1178 memcpy(vif_priv->rekey_data.kck, data->kck, NL80211_KCK_LEN); 1179 vif_priv->rekey_data.replay_ctr = 1180 cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr)); 1181 vif_priv->rekey_data.valid = true; 1182 1183 mutex_unlock(&wcn->conf_mutex); 1184 } 1185 1186 #endif 1187 1188 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw, 1189 struct ieee80211_vif *vif, 1190 struct ieee80211_ampdu_params *params) 1191 { 1192 struct wcn36xx *wcn = hw->priv; 1193 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta); 1194 struct ieee80211_sta *sta = params->sta; 1195 enum ieee80211_ampdu_mlme_action action = params->action; 1196 u16 tid = params->tid; 1197 u16 *ssn = ¶ms->ssn; 1198 int ret = 0; 1199 u8 session; 1200 1201 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n", 1202 action, tid); 1203 1204 mutex_lock(&wcn->conf_mutex); 1205 1206 switch (action) { 1207 case IEEE80211_AMPDU_RX_START: 1208 sta_priv->tid = tid; 1209 session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0, 1210 get_sta_index(vif, sta_priv)); 1211 wcn36xx_smd_add_ba(wcn, session); 1212 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv), tid, 1213 session); 1214 break; 1215 case IEEE80211_AMPDU_RX_STOP: 1216 wcn36xx_smd_del_ba(wcn, tid, 0, get_sta_index(vif, sta_priv)); 1217 break; 1218 case IEEE80211_AMPDU_TX_START: 1219 spin_lock_bh(&sta_priv->ampdu_lock); 1220 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START; 1221 spin_unlock_bh(&sta_priv->ampdu_lock); 1222 1223 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 1224 break; 1225 case IEEE80211_AMPDU_TX_OPERATIONAL: 1226 spin_lock_bh(&sta_priv->ampdu_lock); 1227 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL; 1228 spin_unlock_bh(&sta_priv->ampdu_lock); 1229 1230 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1, 1231 get_sta_index(vif, sta_priv)); 1232 break; 1233 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1234 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1235 case IEEE80211_AMPDU_TX_STOP_CONT: 1236 spin_lock_bh(&sta_priv->ampdu_lock); 1237 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE; 1238 spin_unlock_bh(&sta_priv->ampdu_lock); 1239 1240 wcn36xx_smd_del_ba(wcn, tid, 1, get_sta_index(vif, sta_priv)); 1241 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1242 break; 1243 default: 1244 wcn36xx_err("Unknown AMPDU action\n"); 1245 } 1246 1247 mutex_unlock(&wcn->conf_mutex); 1248 1249 return ret; 1250 } 1251 1252 #if IS_ENABLED(CONFIG_IPV6) 1253 static void wcn36xx_ipv6_addr_change(struct ieee80211_hw *hw, 1254 struct ieee80211_vif *vif, 1255 struct inet6_dev *idev) 1256 { 1257 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 1258 struct inet6_ifaddr *ifa; 1259 int idx = 0; 1260 1261 memset(vif_priv->tentative_addrs, 0, sizeof(vif_priv->tentative_addrs)); 1262 1263 read_lock_bh(&idev->lock); 1264 list_for_each_entry(ifa, &idev->addr_list, if_list) { 1265 vif_priv->target_ipv6_addrs[idx] = ifa->addr; 1266 if (ifa->flags & IFA_F_TENTATIVE) 1267 __set_bit(idx, vif_priv->tentative_addrs); 1268 idx++; 1269 if (idx >= WCN36XX_HAL_IPV6_OFFLOAD_ADDR_MAX) 1270 break; 1271 wcn36xx_dbg(WCN36XX_DBG_MAC, "%pI6 %s\n", &ifa->addr, 1272 (ifa->flags & IFA_F_TENTATIVE) ? "tentative" : NULL); 1273 } 1274 read_unlock_bh(&idev->lock); 1275 1276 vif_priv->num_target_ipv6_addrs = idx; 1277 } 1278 #endif 1279 1280 static const struct ieee80211_ops wcn36xx_ops = { 1281 .start = wcn36xx_start, 1282 .stop = wcn36xx_stop, 1283 .add_interface = wcn36xx_add_interface, 1284 .remove_interface = wcn36xx_remove_interface, 1285 #ifdef CONFIG_PM 1286 .suspend = wcn36xx_suspend, 1287 .resume = wcn36xx_resume, 1288 .set_rekey_data = wcn36xx_set_rekey_data, 1289 #endif 1290 .config = wcn36xx_config, 1291 .prepare_multicast = wcn36xx_prepare_multicast, 1292 .configure_filter = wcn36xx_configure_filter, 1293 .tx = wcn36xx_tx, 1294 .set_key = wcn36xx_set_key, 1295 .hw_scan = wcn36xx_hw_scan, 1296 .cancel_hw_scan = wcn36xx_cancel_hw_scan, 1297 .sw_scan_start = wcn36xx_sw_scan_start, 1298 .sw_scan_complete = wcn36xx_sw_scan_complete, 1299 .bss_info_changed = wcn36xx_bss_info_changed, 1300 .set_rts_threshold = wcn36xx_set_rts_threshold, 1301 .sta_add = wcn36xx_sta_add, 1302 .sta_remove = wcn36xx_sta_remove, 1303 .ampdu_action = wcn36xx_ampdu_action, 1304 #if IS_ENABLED(CONFIG_IPV6) 1305 .ipv6_addr_change = wcn36xx_ipv6_addr_change, 1306 #endif 1307 1308 CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd) 1309 }; 1310 1311 static void 1312 wcn36xx_set_ieee80211_vht_caps(struct ieee80211_sta_vht_cap *vht_cap) 1313 { 1314 vht_cap->vht_supported = true; 1315 1316 vht_cap->cap = (IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 | 1317 IEEE80211_VHT_CAP_SHORT_GI_80 | 1318 IEEE80211_VHT_CAP_RXSTBC_1 | 1319 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | 1320 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE | 1321 3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT | 1322 7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT); 1323 1324 vht_cap->vht_mcs.rx_mcs_map = 1325 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 | 1326 IEEE80211_VHT_MCS_NOT_SUPPORTED << 2 | 1327 IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 | 1328 IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 | 1329 IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 | 1330 IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 | 1331 IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 | 1332 IEEE80211_VHT_MCS_NOT_SUPPORTED << 14); 1333 1334 vht_cap->vht_mcs.rx_highest = cpu_to_le16(433); 1335 vht_cap->vht_mcs.tx_highest = vht_cap->vht_mcs.rx_highest; 1336 1337 vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map; 1338 } 1339 1340 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn) 1341 { 1342 static const u32 cipher_suites[] = { 1343 WLAN_CIPHER_SUITE_WEP40, 1344 WLAN_CIPHER_SUITE_WEP104, 1345 WLAN_CIPHER_SUITE_TKIP, 1346 WLAN_CIPHER_SUITE_CCMP, 1347 }; 1348 1349 ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY); 1350 ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION); 1351 ieee80211_hw_set(wcn->hw, SUPPORTS_PS); 1352 ieee80211_hw_set(wcn->hw, SIGNAL_DBM); 1353 ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL); 1354 ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS); 1355 ieee80211_hw_set(wcn->hw, REPORTS_TX_ACK_STATUS); 1356 1357 wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1358 BIT(NL80211_IFTYPE_AP) | 1359 BIT(NL80211_IFTYPE_ADHOC) | 1360 BIT(NL80211_IFTYPE_MESH_POINT); 1361 1362 wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz; 1363 if (wcn->rf_id != RF_IRIS_WCN3620) 1364 wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz; 1365 1366 if (wcn->rf_id == RF_IRIS_WCN3680) 1367 wcn36xx_set_ieee80211_vht_caps(&wcn_band_5ghz.vht_cap); 1368 1369 wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS; 1370 wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN; 1371 1372 wcn->hw->wiphy->cipher_suites = cipher_suites; 1373 wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); 1374 1375 #ifdef CONFIG_PM 1376 wcn->hw->wiphy->wowlan = &wowlan_support; 1377 #endif 1378 1379 wcn->hw->max_listen_interval = 200; 1380 1381 wcn->hw->queues = 4; 1382 1383 SET_IEEE80211_DEV(wcn->hw, wcn->dev); 1384 1385 wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta); 1386 wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif); 1387 1388 wiphy_ext_feature_set(wcn->hw->wiphy, 1389 NL80211_EXT_FEATURE_CQM_RSSI_LIST); 1390 1391 return 0; 1392 } 1393 1394 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn, 1395 struct platform_device *pdev) 1396 { 1397 struct device_node *mmio_node; 1398 struct device_node *iris_node; 1399 struct resource *res; 1400 int index; 1401 int ret; 1402 1403 /* Set TX IRQ */ 1404 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "tx"); 1405 if (!res) { 1406 wcn36xx_err("failed to get tx_irq\n"); 1407 return -ENOENT; 1408 } 1409 wcn->tx_irq = res->start; 1410 1411 /* Set RX IRQ */ 1412 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "rx"); 1413 if (!res) { 1414 wcn36xx_err("failed to get rx_irq\n"); 1415 return -ENOENT; 1416 } 1417 wcn->rx_irq = res->start; 1418 1419 /* Acquire SMSM tx enable handle */ 1420 wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev, 1421 "tx-enable", &wcn->tx_enable_state_bit); 1422 if (IS_ERR(wcn->tx_enable_state)) { 1423 wcn36xx_err("failed to get tx-enable state\n"); 1424 return PTR_ERR(wcn->tx_enable_state); 1425 } 1426 1427 /* Acquire SMSM tx rings empty handle */ 1428 wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev, 1429 "tx-rings-empty", &wcn->tx_rings_empty_state_bit); 1430 if (IS_ERR(wcn->tx_rings_empty_state)) { 1431 wcn36xx_err("failed to get tx-rings-empty state\n"); 1432 return PTR_ERR(wcn->tx_rings_empty_state); 1433 } 1434 1435 mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0); 1436 if (!mmio_node) { 1437 wcn36xx_err("failed to acquire qcom,mmio reference\n"); 1438 return -EINVAL; 1439 } 1440 1441 wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto"); 1442 1443 /* Map the CCU memory */ 1444 index = of_property_match_string(mmio_node, "reg-names", "ccu"); 1445 wcn->ccu_base = of_iomap(mmio_node, index); 1446 if (!wcn->ccu_base) { 1447 wcn36xx_err("failed to map ccu memory\n"); 1448 ret = -ENOMEM; 1449 goto put_mmio_node; 1450 } 1451 1452 /* Map the DXE memory */ 1453 index = of_property_match_string(mmio_node, "reg-names", "dxe"); 1454 wcn->dxe_base = of_iomap(mmio_node, index); 1455 if (!wcn->dxe_base) { 1456 wcn36xx_err("failed to map dxe memory\n"); 1457 ret = -ENOMEM; 1458 goto unmap_ccu; 1459 } 1460 1461 /* External RF module */ 1462 iris_node = of_get_child_by_name(mmio_node, "iris"); 1463 if (iris_node) { 1464 if (of_device_is_compatible(iris_node, "qcom,wcn3620")) 1465 wcn->rf_id = RF_IRIS_WCN3620; 1466 if (of_device_is_compatible(iris_node, "qcom,wcn3680")) 1467 wcn->rf_id = RF_IRIS_WCN3680; 1468 of_node_put(iris_node); 1469 } 1470 1471 of_node_put(mmio_node); 1472 return 0; 1473 1474 unmap_ccu: 1475 iounmap(wcn->ccu_base); 1476 put_mmio_node: 1477 of_node_put(mmio_node); 1478 return ret; 1479 } 1480 1481 static int wcn36xx_probe(struct platform_device *pdev) 1482 { 1483 struct ieee80211_hw *hw; 1484 struct wcn36xx *wcn; 1485 void *wcnss; 1486 int ret; 1487 const u8 *addr; 1488 1489 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n"); 1490 1491 wcnss = dev_get_drvdata(pdev->dev.parent); 1492 1493 hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops); 1494 if (!hw) { 1495 wcn36xx_err("failed to alloc hw\n"); 1496 ret = -ENOMEM; 1497 goto out_err; 1498 } 1499 platform_set_drvdata(pdev, hw); 1500 wcn = hw->priv; 1501 wcn->hw = hw; 1502 wcn->dev = &pdev->dev; 1503 wcn->first_boot = true; 1504 mutex_init(&wcn->conf_mutex); 1505 mutex_init(&wcn->hal_mutex); 1506 mutex_init(&wcn->scan_lock); 1507 __skb_queue_head_init(&wcn->amsdu); 1508 1509 wcn->hal_buf = devm_kmalloc(wcn->dev, WCN36XX_HAL_BUF_SIZE, GFP_KERNEL); 1510 if (!wcn->hal_buf) { 1511 ret = -ENOMEM; 1512 goto out_wq; 1513 } 1514 1515 ret = dma_set_mask_and_coherent(wcn->dev, DMA_BIT_MASK(32)); 1516 if (ret < 0) { 1517 wcn36xx_err("failed to set DMA mask: %d\n", ret); 1518 goto out_wq; 1519 } 1520 1521 wcn->nv_file = WLAN_NV_FILE; 1522 ret = of_property_read_string(wcn->dev->parent->of_node, "firmware-name", &wcn->nv_file); 1523 if (ret < 0 && ret != -EINVAL) { 1524 wcn36xx_err("failed to read \"firmware-name\" property: %d\n", ret); 1525 goto out_wq; 1526 } 1527 1528 wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw); 1529 if (IS_ERR(wcn->smd_channel)) { 1530 wcn36xx_err("failed to open WLAN_CTRL channel\n"); 1531 ret = PTR_ERR(wcn->smd_channel); 1532 goto out_wq; 1533 } 1534 1535 addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret); 1536 if (addr && ret != ETH_ALEN) { 1537 wcn36xx_err("invalid local-mac-address\n"); 1538 ret = -EINVAL; 1539 goto out_destroy_ept; 1540 } else if (addr) { 1541 wcn36xx_info("mac address: %pM\n", addr); 1542 SET_IEEE80211_PERM_ADDR(wcn->hw, addr); 1543 } 1544 1545 ret = wcn36xx_platform_get_resources(wcn, pdev); 1546 if (ret) 1547 goto out_destroy_ept; 1548 1549 wcn36xx_init_ieee80211(wcn); 1550 ret = ieee80211_register_hw(wcn->hw); 1551 if (ret) 1552 goto out_unmap; 1553 1554 return 0; 1555 1556 out_unmap: 1557 iounmap(wcn->ccu_base); 1558 iounmap(wcn->dxe_base); 1559 out_destroy_ept: 1560 rpmsg_destroy_ept(wcn->smd_channel); 1561 out_wq: 1562 ieee80211_free_hw(hw); 1563 out_err: 1564 return ret; 1565 } 1566 1567 static int wcn36xx_remove(struct platform_device *pdev) 1568 { 1569 struct ieee80211_hw *hw = platform_get_drvdata(pdev); 1570 struct wcn36xx *wcn = hw->priv; 1571 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n"); 1572 1573 release_firmware(wcn->nv); 1574 1575 ieee80211_unregister_hw(hw); 1576 1577 qcom_smem_state_put(wcn->tx_enable_state); 1578 qcom_smem_state_put(wcn->tx_rings_empty_state); 1579 1580 rpmsg_destroy_ept(wcn->smd_channel); 1581 1582 iounmap(wcn->dxe_base); 1583 iounmap(wcn->ccu_base); 1584 1585 __skb_queue_purge(&wcn->amsdu); 1586 1587 mutex_destroy(&wcn->hal_mutex); 1588 ieee80211_free_hw(hw); 1589 1590 return 0; 1591 } 1592 1593 static const struct of_device_id wcn36xx_of_match[] = { 1594 { .compatible = "qcom,wcnss-wlan" }, 1595 {} 1596 }; 1597 MODULE_DEVICE_TABLE(of, wcn36xx_of_match); 1598 1599 static struct platform_driver wcn36xx_driver = { 1600 .probe = wcn36xx_probe, 1601 .remove = wcn36xx_remove, 1602 .driver = { 1603 .name = "wcn36xx", 1604 .of_match_table = wcn36xx_of_match, 1605 }, 1606 }; 1607 1608 module_platform_driver(wcn36xx_driver); 1609 1610 MODULE_LICENSE("Dual BSD/GPL"); 1611 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com"); 1612 MODULE_FIRMWARE(WLAN_NV_FILE); 1613