1 /** 2 * Copyright (c) 2014 Redpine Signals Inc. 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 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <linux/etherdevice.h> 18 #include "rsi_debugfs.h" 19 #include "rsi_mgmt.h" 20 #include "rsi_sdio.h" 21 #include "rsi_common.h" 22 #include "rsi_ps.h" 23 24 static const struct ieee80211_channel rsi_2ghz_channels[] = { 25 { .band = NL80211_BAND_2GHZ, .center_freq = 2412, 26 .hw_value = 1 }, /* Channel 1 */ 27 { .band = NL80211_BAND_2GHZ, .center_freq = 2417, 28 .hw_value = 2 }, /* Channel 2 */ 29 { .band = NL80211_BAND_2GHZ, .center_freq = 2422, 30 .hw_value = 3 }, /* Channel 3 */ 31 { .band = NL80211_BAND_2GHZ, .center_freq = 2427, 32 .hw_value = 4 }, /* Channel 4 */ 33 { .band = NL80211_BAND_2GHZ, .center_freq = 2432, 34 .hw_value = 5 }, /* Channel 5 */ 35 { .band = NL80211_BAND_2GHZ, .center_freq = 2437, 36 .hw_value = 6 }, /* Channel 6 */ 37 { .band = NL80211_BAND_2GHZ, .center_freq = 2442, 38 .hw_value = 7 }, /* Channel 7 */ 39 { .band = NL80211_BAND_2GHZ, .center_freq = 2447, 40 .hw_value = 8 }, /* Channel 8 */ 41 { .band = NL80211_BAND_2GHZ, .center_freq = 2452, 42 .hw_value = 9 }, /* Channel 9 */ 43 { .band = NL80211_BAND_2GHZ, .center_freq = 2457, 44 .hw_value = 10 }, /* Channel 10 */ 45 { .band = NL80211_BAND_2GHZ, .center_freq = 2462, 46 .hw_value = 11 }, /* Channel 11 */ 47 { .band = NL80211_BAND_2GHZ, .center_freq = 2467, 48 .hw_value = 12 }, /* Channel 12 */ 49 { .band = NL80211_BAND_2GHZ, .center_freq = 2472, 50 .hw_value = 13 }, /* Channel 13 */ 51 { .band = NL80211_BAND_2GHZ, .center_freq = 2484, 52 .hw_value = 14 }, /* Channel 14 */ 53 }; 54 55 static const struct ieee80211_channel rsi_5ghz_channels[] = { 56 { .band = NL80211_BAND_5GHZ, .center_freq = 5180, 57 .hw_value = 36, }, /* Channel 36 */ 58 { .band = NL80211_BAND_5GHZ, .center_freq = 5200, 59 .hw_value = 40, }, /* Channel 40 */ 60 { .band = NL80211_BAND_5GHZ, .center_freq = 5220, 61 .hw_value = 44, }, /* Channel 44 */ 62 { .band = NL80211_BAND_5GHZ, .center_freq = 5240, 63 .hw_value = 48, }, /* Channel 48 */ 64 { .band = NL80211_BAND_5GHZ, .center_freq = 5260, 65 .hw_value = 52, }, /* Channel 52 */ 66 { .band = NL80211_BAND_5GHZ, .center_freq = 5280, 67 .hw_value = 56, }, /* Channel 56 */ 68 { .band = NL80211_BAND_5GHZ, .center_freq = 5300, 69 .hw_value = 60, }, /* Channel 60 */ 70 { .band = NL80211_BAND_5GHZ, .center_freq = 5320, 71 .hw_value = 64, }, /* Channel 64 */ 72 { .band = NL80211_BAND_5GHZ, .center_freq = 5500, 73 .hw_value = 100, }, /* Channel 100 */ 74 { .band = NL80211_BAND_5GHZ, .center_freq = 5520, 75 .hw_value = 104, }, /* Channel 104 */ 76 { .band = NL80211_BAND_5GHZ, .center_freq = 5540, 77 .hw_value = 108, }, /* Channel 108 */ 78 { .band = NL80211_BAND_5GHZ, .center_freq = 5560, 79 .hw_value = 112, }, /* Channel 112 */ 80 { .band = NL80211_BAND_5GHZ, .center_freq = 5580, 81 .hw_value = 116, }, /* Channel 116 */ 82 { .band = NL80211_BAND_5GHZ, .center_freq = 5600, 83 .hw_value = 120, }, /* Channel 120 */ 84 { .band = NL80211_BAND_5GHZ, .center_freq = 5620, 85 .hw_value = 124, }, /* Channel 124 */ 86 { .band = NL80211_BAND_5GHZ, .center_freq = 5640, 87 .hw_value = 128, }, /* Channel 128 */ 88 { .band = NL80211_BAND_5GHZ, .center_freq = 5660, 89 .hw_value = 132, }, /* Channel 132 */ 90 { .band = NL80211_BAND_5GHZ, .center_freq = 5680, 91 .hw_value = 136, }, /* Channel 136 */ 92 { .band = NL80211_BAND_5GHZ, .center_freq = 5700, 93 .hw_value = 140, }, /* Channel 140 */ 94 { .band = NL80211_BAND_5GHZ, .center_freq = 5745, 95 .hw_value = 149, }, /* Channel 149 */ 96 { .band = NL80211_BAND_5GHZ, .center_freq = 5765, 97 .hw_value = 153, }, /* Channel 153 */ 98 { .band = NL80211_BAND_5GHZ, .center_freq = 5785, 99 .hw_value = 157, }, /* Channel 157 */ 100 { .band = NL80211_BAND_5GHZ, .center_freq = 5805, 101 .hw_value = 161, }, /* Channel 161 */ 102 { .band = NL80211_BAND_5GHZ, .center_freq = 5825, 103 .hw_value = 165, }, /* Channel 165 */ 104 }; 105 106 struct ieee80211_rate rsi_rates[12] = { 107 { .bitrate = STD_RATE_01 * 5, .hw_value = RSI_RATE_1 }, 108 { .bitrate = STD_RATE_02 * 5, .hw_value = RSI_RATE_2 }, 109 { .bitrate = STD_RATE_5_5 * 5, .hw_value = RSI_RATE_5_5 }, 110 { .bitrate = STD_RATE_11 * 5, .hw_value = RSI_RATE_11 }, 111 { .bitrate = STD_RATE_06 * 5, .hw_value = RSI_RATE_6 }, 112 { .bitrate = STD_RATE_09 * 5, .hw_value = RSI_RATE_9 }, 113 { .bitrate = STD_RATE_12 * 5, .hw_value = RSI_RATE_12 }, 114 { .bitrate = STD_RATE_18 * 5, .hw_value = RSI_RATE_18 }, 115 { .bitrate = STD_RATE_24 * 5, .hw_value = RSI_RATE_24 }, 116 { .bitrate = STD_RATE_36 * 5, .hw_value = RSI_RATE_36 }, 117 { .bitrate = STD_RATE_48 * 5, .hw_value = RSI_RATE_48 }, 118 { .bitrate = STD_RATE_54 * 5, .hw_value = RSI_RATE_54 }, 119 }; 120 121 const u16 rsi_mcsrates[8] = { 122 RSI_RATE_MCS0, RSI_RATE_MCS1, RSI_RATE_MCS2, RSI_RATE_MCS3, 123 RSI_RATE_MCS4, RSI_RATE_MCS5, RSI_RATE_MCS6, RSI_RATE_MCS7 124 }; 125 126 static const u32 rsi_max_ap_stas[16] = { 127 32, /* 1 - Wi-Fi alone */ 128 0, /* 2 */ 129 0, /* 3 */ 130 0, /* 4 - BT EDR alone */ 131 4, /* 5 - STA + BT EDR */ 132 32, /* 6 - AP + BT EDR */ 133 0, /* 7 */ 134 0, /* 8 - BT LE alone */ 135 4, /* 9 - STA + BE LE */ 136 0, /* 10 */ 137 0, /* 11 */ 138 0, /* 12 */ 139 1, /* 13 - STA + BT Dual */ 140 4, /* 14 - AP + BT Dual */ 141 }; 142 143 static const struct ieee80211_iface_limit rsi_iface_limits[] = { 144 { 145 .max = 1, 146 .types = BIT(NL80211_IFTYPE_STATION), 147 }, 148 { 149 .max = 1, 150 .types = BIT(NL80211_IFTYPE_AP) | 151 BIT(NL80211_IFTYPE_P2P_CLIENT) | 152 BIT(NL80211_IFTYPE_P2P_GO), 153 }, 154 { 155 .max = 1, 156 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), 157 }, 158 }; 159 160 static const struct ieee80211_iface_combination rsi_iface_combinations[] = { 161 { 162 .num_different_channels = 1, 163 .max_interfaces = 3, 164 .limits = rsi_iface_limits, 165 .n_limits = ARRAY_SIZE(rsi_iface_limits), 166 }, 167 }; 168 169 /** 170 * rsi_is_cipher_wep() - This function determines if the cipher is WEP or not. 171 * @common: Pointer to the driver private structure. 172 * 173 * Return: If cipher type is WEP, a value of 1 is returned, else 0. 174 */ 175 176 bool rsi_is_cipher_wep(struct rsi_common *common) 177 { 178 if (((common->secinfo.gtk_cipher == WLAN_CIPHER_SUITE_WEP104) || 179 (common->secinfo.gtk_cipher == WLAN_CIPHER_SUITE_WEP40)) && 180 (!common->secinfo.ptk_cipher)) 181 return true; 182 else 183 return false; 184 } 185 186 /** 187 * rsi_register_rates_channels() - This function registers channels and rates. 188 * @adapter: Pointer to the adapter structure. 189 * @band: Operating band to be set. 190 * 191 * Return: int - 0 on success, negative error on failure. 192 */ 193 static int rsi_register_rates_channels(struct rsi_hw *adapter, int band) 194 { 195 struct ieee80211_supported_band *sbands = &adapter->sbands[band]; 196 void *channels = NULL; 197 198 if (band == NL80211_BAND_2GHZ) { 199 channels = kmemdup(rsi_2ghz_channels, sizeof(rsi_2ghz_channels), 200 GFP_KERNEL); 201 if (!channels) 202 return -ENOMEM; 203 sbands->band = NL80211_BAND_2GHZ; 204 sbands->n_channels = ARRAY_SIZE(rsi_2ghz_channels); 205 sbands->bitrates = rsi_rates; 206 sbands->n_bitrates = ARRAY_SIZE(rsi_rates); 207 } else { 208 channels = kmemdup(rsi_5ghz_channels, sizeof(rsi_5ghz_channels), 209 GFP_KERNEL); 210 if (!channels) 211 return -ENOMEM; 212 sbands->band = NL80211_BAND_5GHZ; 213 sbands->n_channels = ARRAY_SIZE(rsi_5ghz_channels); 214 sbands->bitrates = &rsi_rates[4]; 215 sbands->n_bitrates = ARRAY_SIZE(rsi_rates) - 4; 216 } 217 218 sbands->channels = channels; 219 220 memset(&sbands->ht_cap, 0, sizeof(struct ieee80211_sta_ht_cap)); 221 sbands->ht_cap.ht_supported = true; 222 sbands->ht_cap.cap = (IEEE80211_HT_CAP_SUP_WIDTH_20_40 | 223 IEEE80211_HT_CAP_SGI_20 | 224 IEEE80211_HT_CAP_SGI_40); 225 sbands->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K; 226 sbands->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE; 227 sbands->ht_cap.mcs.rx_mask[0] = 0xff; 228 sbands->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; 229 /* sbands->ht_cap.mcs.rx_highest = 0x82; */ 230 return 0; 231 } 232 233 static int rsi_mac80211_hw_scan_start(struct ieee80211_hw *hw, 234 struct ieee80211_vif *vif, 235 struct ieee80211_scan_request *hw_req) 236 { 237 struct cfg80211_scan_request *scan_req = &hw_req->req; 238 struct rsi_hw *adapter = hw->priv; 239 struct rsi_common *common = adapter->priv; 240 struct ieee80211_bss_conf *bss = &vif->bss_conf; 241 242 rsi_dbg(INFO_ZONE, "***** Hardware scan start *****\n"); 243 common->mac_ops_resumed = false; 244 245 if (common->fsm_state != FSM_MAC_INIT_DONE) 246 return -ENODEV; 247 248 if ((common->wow_flags & RSI_WOW_ENABLED) || 249 scan_req->n_channels == 0) 250 return -EINVAL; 251 252 /* Scan already in progress. So return */ 253 if (common->bgscan_en) 254 return -EBUSY; 255 256 /* If STA is not connected, return with special value 1, in order 257 * to start sw_scan in mac80211 258 */ 259 if (!bss->assoc) 260 return 1; 261 262 mutex_lock(&common->mutex); 263 common->hwscan = scan_req; 264 if (!rsi_send_bgscan_params(common, RSI_START_BGSCAN)) { 265 if (!rsi_send_bgscan_probe_req(common, vif)) { 266 rsi_dbg(INFO_ZONE, "Background scan started...\n"); 267 common->bgscan_en = true; 268 } 269 } 270 mutex_unlock(&common->mutex); 271 272 return 0; 273 } 274 275 static void rsi_mac80211_cancel_hw_scan(struct ieee80211_hw *hw, 276 struct ieee80211_vif *vif) 277 { 278 struct rsi_hw *adapter = hw->priv; 279 struct rsi_common *common = adapter->priv; 280 struct cfg80211_scan_info info; 281 282 rsi_dbg(INFO_ZONE, "***** Hardware scan stop *****\n"); 283 mutex_lock(&common->mutex); 284 285 if (common->bgscan_en) { 286 if (!rsi_send_bgscan_params(common, RSI_STOP_BGSCAN)) 287 common->bgscan_en = false; 288 info.aborted = false; 289 ieee80211_scan_completed(adapter->hw, &info); 290 rsi_dbg(INFO_ZONE, "Back ground scan cancelled\n"); 291 } 292 common->hwscan = NULL; 293 mutex_unlock(&common->mutex); 294 } 295 296 /** 297 * rsi_mac80211_detach() - This function is used to de-initialize the 298 * Mac80211 stack. 299 * @adapter: Pointer to the adapter structure. 300 * 301 * Return: None. 302 */ 303 void rsi_mac80211_detach(struct rsi_hw *adapter) 304 { 305 struct ieee80211_hw *hw = adapter->hw; 306 enum nl80211_band band; 307 308 if (hw) { 309 ieee80211_stop_queues(hw); 310 ieee80211_unregister_hw(hw); 311 ieee80211_free_hw(hw); 312 adapter->hw = NULL; 313 } 314 315 for (band = 0; band < NUM_NL80211_BANDS; band++) { 316 struct ieee80211_supported_band *sband = 317 &adapter->sbands[band]; 318 319 kfree(sband->channels); 320 } 321 322 #ifdef CONFIG_RSI_DEBUGFS 323 rsi_remove_dbgfs(adapter); 324 kfree(adapter->dfsentry); 325 #endif 326 } 327 EXPORT_SYMBOL_GPL(rsi_mac80211_detach); 328 329 /** 330 * rsi_indicate_tx_status() - This function indicates the transmit status. 331 * @adapter: Pointer to the adapter structure. 332 * @skb: Pointer to the socket buffer structure. 333 * @status: Status 334 * 335 * Return: None. 336 */ 337 void rsi_indicate_tx_status(struct rsi_hw *adapter, 338 struct sk_buff *skb, 339 int status) 340 { 341 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 342 struct skb_info *tx_params; 343 344 if (!adapter->hw) { 345 rsi_dbg(ERR_ZONE, "##### No MAC #####\n"); 346 return; 347 } 348 349 if (!status) 350 info->flags |= IEEE80211_TX_STAT_ACK; 351 352 tx_params = (struct skb_info *)info->driver_data; 353 skb_pull(skb, tx_params->internal_hdr_size); 354 memset(info->driver_data, 0, IEEE80211_TX_INFO_DRIVER_DATA_SIZE); 355 356 ieee80211_tx_status_irqsafe(adapter->hw, skb); 357 } 358 359 /** 360 * rsi_mac80211_tx() - This is the handler that 802.11 module calls for each 361 * transmitted frame.SKB contains the buffer starting 362 * from the IEEE 802.11 header. 363 * @hw: Pointer to the ieee80211_hw structure. 364 * @control: Pointer to the ieee80211_tx_control structure 365 * @skb: Pointer to the socket buffer structure. 366 * 367 * Return: None 368 */ 369 static void rsi_mac80211_tx(struct ieee80211_hw *hw, 370 struct ieee80211_tx_control *control, 371 struct sk_buff *skb) 372 { 373 struct rsi_hw *adapter = hw->priv; 374 struct rsi_common *common = adapter->priv; 375 struct ieee80211_hdr *wlh = (struct ieee80211_hdr *)skb->data; 376 377 if (ieee80211_is_auth(wlh->frame_control)) 378 common->mac_ops_resumed = false; 379 380 rsi_core_xmit(common, skb); 381 } 382 383 /** 384 * rsi_mac80211_start() - This is first handler that 802.11 module calls, since 385 * the driver init is complete by then, just 386 * returns success. 387 * @hw: Pointer to the ieee80211_hw structure. 388 * 389 * Return: 0 as success. 390 */ 391 static int rsi_mac80211_start(struct ieee80211_hw *hw) 392 { 393 struct rsi_hw *adapter = hw->priv; 394 struct rsi_common *common = adapter->priv; 395 396 rsi_dbg(ERR_ZONE, "===> Interface UP <===\n"); 397 mutex_lock(&common->mutex); 398 if (common->hibernate_resume) { 399 common->reinit_hw = true; 400 adapter->host_intf_ops->reinit_device(adapter); 401 wait_for_completion(&adapter->priv->wlan_init_completion); 402 } 403 common->iface_down = false; 404 wiphy_rfkill_start_polling(hw->wiphy); 405 rsi_send_rx_filter_frame(common, 0); 406 mutex_unlock(&common->mutex); 407 408 return 0; 409 } 410 411 /** 412 * rsi_mac80211_stop() - This is the last handler that 802.11 module calls. 413 * @hw: Pointer to the ieee80211_hw structure. 414 * 415 * Return: None. 416 */ 417 static void rsi_mac80211_stop(struct ieee80211_hw *hw) 418 { 419 struct rsi_hw *adapter = hw->priv; 420 struct rsi_common *common = adapter->priv; 421 422 rsi_dbg(ERR_ZONE, "===> Interface DOWN <===\n"); 423 mutex_lock(&common->mutex); 424 common->iface_down = true; 425 wiphy_rfkill_stop_polling(hw->wiphy); 426 427 /* Block all rx frames */ 428 rsi_send_rx_filter_frame(common, 0xffff); 429 430 mutex_unlock(&common->mutex); 431 } 432 433 static int rsi_map_intf_mode(enum nl80211_iftype vif_type) 434 { 435 switch (vif_type) { 436 case NL80211_IFTYPE_STATION: 437 return RSI_OPMODE_STA; 438 case NL80211_IFTYPE_AP: 439 return RSI_OPMODE_AP; 440 case NL80211_IFTYPE_P2P_DEVICE: 441 return RSI_OPMODE_P2P_CLIENT; 442 case NL80211_IFTYPE_P2P_CLIENT: 443 return RSI_OPMODE_P2P_CLIENT; 444 case NL80211_IFTYPE_P2P_GO: 445 return RSI_OPMODE_P2P_GO; 446 default: 447 return RSI_OPMODE_UNSUPPORTED; 448 } 449 } 450 451 /** 452 * rsi_mac80211_add_interface() - This function is called when a netdevice 453 * attached to the hardware is enabled. 454 * @hw: Pointer to the ieee80211_hw structure. 455 * @vif: Pointer to the ieee80211_vif structure. 456 * 457 * Return: ret: 0 on success, negative error code on failure. 458 */ 459 static int rsi_mac80211_add_interface(struct ieee80211_hw *hw, 460 struct ieee80211_vif *vif) 461 { 462 struct rsi_hw *adapter = hw->priv; 463 struct rsi_common *common = adapter->priv; 464 struct vif_priv *vif_info = (struct vif_priv *)vif->drv_priv; 465 enum opmode intf_mode; 466 enum vap_status vap_status; 467 int vap_idx = -1, i; 468 469 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 470 mutex_lock(&common->mutex); 471 472 intf_mode = rsi_map_intf_mode(vif->type); 473 if (intf_mode == RSI_OPMODE_UNSUPPORTED) { 474 rsi_dbg(ERR_ZONE, 475 "%s: Interface type %d not supported\n", __func__, 476 vif->type); 477 mutex_unlock(&common->mutex); 478 return -EOPNOTSUPP; 479 } 480 if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) || 481 (vif->type == NL80211_IFTYPE_P2P_CLIENT) || 482 (vif->type == NL80211_IFTYPE_P2P_GO)) 483 common->p2p_enabled = true; 484 485 /* Get free vap index */ 486 for (i = 0; i < RSI_MAX_VIFS; i++) { 487 if (!adapter->vifs[i] || 488 !memcmp(vif->addr, adapter->vifs[i]->addr, ETH_ALEN)) { 489 vap_idx = i; 490 break; 491 } 492 } 493 if (vap_idx < 0) { 494 rsi_dbg(ERR_ZONE, "Reject: Max VAPs reached\n"); 495 mutex_unlock(&common->mutex); 496 return -EOPNOTSUPP; 497 } 498 vif_info->vap_id = vap_idx; 499 adapter->vifs[vap_idx] = vif; 500 adapter->sc_nvifs++; 501 vap_status = VAP_ADD; 502 503 if (rsi_set_vap_capabilities(common, intf_mode, vif->addr, 504 vif_info->vap_id, vap_status)) { 505 rsi_dbg(ERR_ZONE, "Failed to set VAP capabilities\n"); 506 mutex_unlock(&common->mutex); 507 return -EINVAL; 508 } 509 510 if ((vif->type == NL80211_IFTYPE_AP) || 511 (vif->type == NL80211_IFTYPE_P2P_GO)) { 512 rsi_send_rx_filter_frame(common, DISALLOW_BEACONS); 513 common->min_rate = RSI_RATE_AUTO; 514 for (i = 0; i < common->max_stations; i++) 515 common->stations[i].sta = NULL; 516 } 517 518 mutex_unlock(&common->mutex); 519 520 return 0; 521 } 522 523 /** 524 * rsi_mac80211_remove_interface() - This function notifies driver that an 525 * interface is going down. 526 * @hw: Pointer to the ieee80211_hw structure. 527 * @vif: Pointer to the ieee80211_vif structure. 528 * 529 * Return: None. 530 */ 531 static void rsi_mac80211_remove_interface(struct ieee80211_hw *hw, 532 struct ieee80211_vif *vif) 533 { 534 struct rsi_hw *adapter = hw->priv; 535 struct rsi_common *common = adapter->priv; 536 enum opmode opmode; 537 int i; 538 539 rsi_dbg(INFO_ZONE, "Remove Interface Called\n"); 540 541 mutex_lock(&common->mutex); 542 543 if (adapter->sc_nvifs <= 0) { 544 mutex_unlock(&common->mutex); 545 return; 546 } 547 548 opmode = rsi_map_intf_mode(vif->type); 549 if (opmode == RSI_OPMODE_UNSUPPORTED) { 550 rsi_dbg(ERR_ZONE, "Opmode error : %d\n", opmode); 551 mutex_unlock(&common->mutex); 552 return; 553 } 554 for (i = 0; i < RSI_MAX_VIFS; i++) { 555 if (!adapter->vifs[i]) 556 continue; 557 if (vif == adapter->vifs[i]) { 558 rsi_set_vap_capabilities(common, opmode, vif->addr, 559 i, VAP_DELETE); 560 adapter->sc_nvifs--; 561 adapter->vifs[i] = NULL; 562 } 563 } 564 mutex_unlock(&common->mutex); 565 } 566 567 /** 568 * rsi_channel_change() - This function is a performs the checks 569 * required for changing a channel and sets 570 * the channel accordingly. 571 * @hw: Pointer to the ieee80211_hw structure. 572 * 573 * Return: 0 on success, negative error code on failure. 574 */ 575 static int rsi_channel_change(struct ieee80211_hw *hw) 576 { 577 struct rsi_hw *adapter = hw->priv; 578 struct rsi_common *common = adapter->priv; 579 int status = -EOPNOTSUPP; 580 struct ieee80211_channel *curchan = hw->conf.chandef.chan; 581 u16 channel = curchan->hw_value; 582 struct ieee80211_vif *vif; 583 struct ieee80211_bss_conf *bss; 584 bool assoc = false; 585 int i; 586 587 rsi_dbg(INFO_ZONE, 588 "%s: Set channel: %d MHz type: %d channel_no %d\n", 589 __func__, curchan->center_freq, 590 curchan->flags, channel); 591 592 for (i = 0; i < RSI_MAX_VIFS; i++) { 593 vif = adapter->vifs[i]; 594 if (!vif) 595 continue; 596 if (vif->type == NL80211_IFTYPE_STATION) { 597 bss = &vif->bss_conf; 598 if (bss->assoc) { 599 assoc = true; 600 break; 601 } 602 } 603 } 604 if (assoc) { 605 if (!common->hw_data_qs_blocked && 606 (rsi_get_connected_channel(vif) != channel)) { 607 rsi_dbg(INFO_ZONE, "blk data q %d\n", channel); 608 if (!rsi_send_block_unblock_frame(common, true)) 609 common->hw_data_qs_blocked = true; 610 } 611 } 612 613 status = rsi_band_check(common, curchan); 614 if (!status) 615 status = rsi_set_channel(adapter->priv, curchan); 616 617 if (assoc) { 618 if (common->hw_data_qs_blocked && 619 (rsi_get_connected_channel(vif) == channel)) { 620 rsi_dbg(INFO_ZONE, "unblk data q %d\n", channel); 621 if (!rsi_send_block_unblock_frame(common, false)) 622 common->hw_data_qs_blocked = false; 623 } 624 } 625 626 return status; 627 } 628 629 /** 630 * rsi_config_power() - This function configures tx power to device 631 * @hw: Pointer to the ieee80211_hw structure. 632 * 633 * Return: 0 on success, negative error code on failure. 634 */ 635 static int rsi_config_power(struct ieee80211_hw *hw) 636 { 637 struct rsi_hw *adapter = hw->priv; 638 struct rsi_common *common = adapter->priv; 639 struct ieee80211_conf *conf = &hw->conf; 640 641 if (adapter->sc_nvifs <= 0) { 642 rsi_dbg(ERR_ZONE, "%s: No virtual interface found\n", __func__); 643 return -EINVAL; 644 } 645 646 rsi_dbg(INFO_ZONE, 647 "%s: Set tx power: %d dBM\n", __func__, conf->power_level); 648 649 if (conf->power_level == common->tx_power) 650 return 0; 651 652 common->tx_power = conf->power_level; 653 654 return rsi_send_radio_params_update(common); 655 } 656 657 /** 658 * rsi_mac80211_config() - This function is a handler for configuration 659 * requests. The stack calls this function to 660 * change hardware configuration, e.g., channel. 661 * @hw: Pointer to the ieee80211_hw structure. 662 * @changed: Changed flags set. 663 * 664 * Return: 0 on success, negative error code on failure. 665 */ 666 static int rsi_mac80211_config(struct ieee80211_hw *hw, 667 u32 changed) 668 { 669 struct rsi_hw *adapter = hw->priv; 670 struct rsi_common *common = adapter->priv; 671 struct ieee80211_conf *conf = &hw->conf; 672 int status = -EOPNOTSUPP; 673 674 mutex_lock(&common->mutex); 675 676 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) 677 status = rsi_channel_change(hw); 678 679 /* tx power */ 680 if (changed & IEEE80211_CONF_CHANGE_POWER) { 681 rsi_dbg(INFO_ZONE, "%s: Configuring Power\n", __func__); 682 status = rsi_config_power(hw); 683 } 684 685 /* Power save parameters */ 686 if ((changed & IEEE80211_CONF_CHANGE_PS) && 687 !common->mac_ops_resumed) { 688 struct ieee80211_vif *vif, *sta_vif = NULL; 689 unsigned long flags; 690 int i, set_ps = 1; 691 692 for (i = 0; i < RSI_MAX_VIFS; i++) { 693 vif = adapter->vifs[i]; 694 if (!vif) 695 continue; 696 /* Don't go to power save if AP vap exists */ 697 if ((vif->type == NL80211_IFTYPE_AP) || 698 (vif->type == NL80211_IFTYPE_P2P_GO)) { 699 set_ps = 0; 700 break; 701 } 702 if ((vif->type == NL80211_IFTYPE_STATION || 703 vif->type == NL80211_IFTYPE_P2P_CLIENT) && 704 (!sta_vif || vif->bss_conf.assoc)) 705 sta_vif = vif; 706 } 707 if (set_ps && sta_vif) { 708 spin_lock_irqsave(&adapter->ps_lock, flags); 709 if (conf->flags & IEEE80211_CONF_PS) 710 rsi_enable_ps(adapter, sta_vif); 711 else 712 rsi_disable_ps(adapter, sta_vif); 713 spin_unlock_irqrestore(&adapter->ps_lock, flags); 714 } 715 } 716 717 /* RTS threshold */ 718 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 719 rsi_dbg(INFO_ZONE, "RTS threshold\n"); 720 if ((common->rts_threshold) <= IEEE80211_MAX_RTS_THRESHOLD) { 721 rsi_dbg(INFO_ZONE, 722 "%s: Sending vap updates....\n", __func__); 723 status = rsi_send_vap_dynamic_update(common); 724 } 725 } 726 mutex_unlock(&common->mutex); 727 728 return status; 729 } 730 731 /** 732 * rsi_get_connected_channel() - This function is used to get the current 733 * connected channel number. 734 * @adapter: Pointer to the adapter structure. 735 * 736 * Return: Current connected AP's channel number is returned. 737 */ 738 u16 rsi_get_connected_channel(struct ieee80211_vif *vif) 739 { 740 struct ieee80211_bss_conf *bss; 741 struct ieee80211_channel *channel; 742 743 if (!vif) 744 return 0; 745 746 bss = &vif->bss_conf; 747 channel = bss->chandef.chan; 748 749 if (!channel) 750 return 0; 751 752 return channel->hw_value; 753 } 754 755 static void rsi_switch_channel(struct rsi_hw *adapter, 756 struct ieee80211_vif *vif) 757 { 758 struct rsi_common *common = adapter->priv; 759 struct ieee80211_channel *channel; 760 761 if (common->iface_down) 762 return; 763 if (!vif) 764 return; 765 766 channel = vif->bss_conf.chandef.chan; 767 768 if (!channel) 769 return; 770 771 rsi_band_check(common, channel); 772 rsi_set_channel(common, channel); 773 rsi_dbg(INFO_ZONE, "Switched to channel - %d\n", channel->hw_value); 774 } 775 776 /** 777 * rsi_mac80211_bss_info_changed() - This function is a handler for config 778 * requests related to BSS parameters that 779 * may vary during BSS's lifespan. 780 * @hw: Pointer to the ieee80211_hw structure. 781 * @vif: Pointer to the ieee80211_vif structure. 782 * @bss_conf: Pointer to the ieee80211_bss_conf structure. 783 * @changed: Changed flags set. 784 * 785 * Return: None. 786 */ 787 static void rsi_mac80211_bss_info_changed(struct ieee80211_hw *hw, 788 struct ieee80211_vif *vif, 789 struct ieee80211_bss_conf *bss_conf, 790 u32 changed) 791 { 792 struct rsi_hw *adapter = hw->priv; 793 struct rsi_common *common = adapter->priv; 794 struct ieee80211_bss_conf *bss = &vif->bss_conf; 795 struct ieee80211_conf *conf = &hw->conf; 796 u16 rx_filter_word = 0; 797 798 mutex_lock(&common->mutex); 799 if (changed & BSS_CHANGED_ASSOC) { 800 rsi_dbg(INFO_ZONE, "%s: Changed Association status: %d\n", 801 __func__, bss_conf->assoc); 802 if (bss_conf->assoc) { 803 /* Send the RX filter frame */ 804 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | 805 ALLOW_CTRL_ASSOC_PEER | 806 ALLOW_MGMT_ASSOC_PEER); 807 rsi_send_rx_filter_frame(common, rx_filter_word); 808 } 809 rsi_inform_bss_status(common, 810 RSI_OPMODE_STA, 811 bss_conf->assoc, 812 bss_conf->bssid, 813 bss_conf->qos, 814 bss_conf->aid, 815 NULL, 0, 816 bss_conf->assoc_capability, vif); 817 adapter->ps_info.dtim_interval_duration = bss->dtim_period; 818 adapter->ps_info.listen_interval = conf->listen_interval; 819 820 /* If U-APSD is updated, send ps parameters to firmware */ 821 if (bss->assoc) { 822 if (common->uapsd_bitmap) { 823 rsi_dbg(INFO_ZONE, "Configuring UAPSD\n"); 824 rsi_conf_uapsd(adapter, vif); 825 } 826 } else { 827 common->uapsd_bitmap = 0; 828 } 829 } 830 831 if (changed & BSS_CHANGED_CQM) { 832 common->cqm_info.last_cqm_event_rssi = 0; 833 common->cqm_info.rssi_thold = bss_conf->cqm_rssi_thold; 834 common->cqm_info.rssi_hyst = bss_conf->cqm_rssi_hyst; 835 rsi_dbg(INFO_ZONE, "RSSI throld & hysteresis are: %d %d\n", 836 common->cqm_info.rssi_thold, 837 common->cqm_info.rssi_hyst); 838 } 839 840 if ((changed & BSS_CHANGED_BEACON_ENABLED) && 841 ((vif->type == NL80211_IFTYPE_AP) || 842 (vif->type == NL80211_IFTYPE_P2P_GO))) { 843 if (bss->enable_beacon) { 844 rsi_dbg(INFO_ZONE, "===> BEACON ENABLED <===\n"); 845 common->beacon_enabled = 1; 846 } else { 847 rsi_dbg(INFO_ZONE, "===> BEACON DISABLED <===\n"); 848 common->beacon_enabled = 0; 849 } 850 } 851 852 mutex_unlock(&common->mutex); 853 } 854 855 /** 856 * rsi_mac80211_conf_filter() - This function configure the device's RX filter. 857 * @hw: Pointer to the ieee80211_hw structure. 858 * @changed: Changed flags set. 859 * @total_flags: Total initial flags set. 860 * @multicast: Multicast. 861 * 862 * Return: None. 863 */ 864 static void rsi_mac80211_conf_filter(struct ieee80211_hw *hw, 865 u32 changed_flags, 866 u32 *total_flags, 867 u64 multicast) 868 { 869 /* Not doing much here as of now */ 870 *total_flags &= RSI_SUPP_FILTERS; 871 } 872 873 /** 874 * rsi_mac80211_conf_tx() - This function configures TX queue parameters 875 * (EDCF (aifs, cw_min, cw_max), bursting) 876 * for a hardware TX queue. 877 * @hw: Pointer to the ieee80211_hw structure 878 * @vif: Pointer to the ieee80211_vif structure. 879 * @queue: Queue number. 880 * @params: Pointer to ieee80211_tx_queue_params structure. 881 * 882 * Return: 0 on success, negative error code on failure. 883 */ 884 static int rsi_mac80211_conf_tx(struct ieee80211_hw *hw, 885 struct ieee80211_vif *vif, u16 queue, 886 const struct ieee80211_tx_queue_params *params) 887 { 888 struct rsi_hw *adapter = hw->priv; 889 struct rsi_common *common = adapter->priv; 890 u8 idx = 0; 891 892 if (queue >= IEEE80211_NUM_ACS) 893 return 0; 894 895 rsi_dbg(INFO_ZONE, 896 "%s: Conf queue %d, aifs: %d, cwmin: %d cwmax: %d, txop: %d\n", 897 __func__, queue, params->aifs, 898 params->cw_min, params->cw_max, params->txop); 899 900 mutex_lock(&common->mutex); 901 /* Map into the way the f/w expects */ 902 switch (queue) { 903 case IEEE80211_AC_VO: 904 idx = VO_Q; 905 break; 906 case IEEE80211_AC_VI: 907 idx = VI_Q; 908 break; 909 case IEEE80211_AC_BE: 910 idx = BE_Q; 911 break; 912 case IEEE80211_AC_BK: 913 idx = BK_Q; 914 break; 915 default: 916 idx = BE_Q; 917 break; 918 } 919 920 memcpy(&common->edca_params[idx], 921 params, 922 sizeof(struct ieee80211_tx_queue_params)); 923 924 if (params->uapsd) 925 common->uapsd_bitmap |= idx; 926 else 927 common->uapsd_bitmap &= (~idx); 928 929 mutex_unlock(&common->mutex); 930 931 return 0; 932 } 933 934 /** 935 * rsi_hal_key_config() - This function loads the keys into the firmware. 936 * @hw: Pointer to the ieee80211_hw structure. 937 * @vif: Pointer to the ieee80211_vif structure. 938 * @key: Pointer to the ieee80211_key_conf structure. 939 * 940 * Return: status: 0 on success, negative error codes on failure. 941 */ 942 static int rsi_hal_key_config(struct ieee80211_hw *hw, 943 struct ieee80211_vif *vif, 944 struct ieee80211_key_conf *key, 945 struct ieee80211_sta *sta) 946 { 947 struct rsi_hw *adapter = hw->priv; 948 struct rsi_sta *rsta = NULL; 949 int status; 950 u8 key_type; 951 s16 sta_id = 0; 952 953 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 954 key_type = RSI_PAIRWISE_KEY; 955 else 956 key_type = RSI_GROUP_KEY; 957 958 rsi_dbg(ERR_ZONE, "%s: Cipher 0x%x key_type: %d key_len: %d\n", 959 __func__, key->cipher, key_type, key->keylen); 960 961 if ((vif->type == NL80211_IFTYPE_AP) || 962 (vif->type == NL80211_IFTYPE_P2P_GO)) { 963 if (sta) { 964 rsta = rsi_find_sta(adapter->priv, sta->addr); 965 if (rsta) 966 sta_id = rsta->sta_id; 967 } 968 adapter->priv->key = key; 969 } else { 970 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) || 971 (key->cipher == WLAN_CIPHER_SUITE_WEP40)) { 972 status = rsi_hal_load_key(adapter->priv, 973 key->key, 974 key->keylen, 975 RSI_PAIRWISE_KEY, 976 key->keyidx, 977 key->cipher, 978 sta_id, 979 vif); 980 if (status) 981 return status; 982 } 983 } 984 985 status = rsi_hal_load_key(adapter->priv, 986 key->key, 987 key->keylen, 988 key_type, 989 key->keyidx, 990 key->cipher, 991 sta_id, 992 vif); 993 if (status) 994 return status; 995 996 if (vif->type == NL80211_IFTYPE_STATION && 997 (key->cipher == WLAN_CIPHER_SUITE_WEP104 || 998 key->cipher == WLAN_CIPHER_SUITE_WEP40)) { 999 if (!rsi_send_block_unblock_frame(adapter->priv, false)) 1000 adapter->priv->hw_data_qs_blocked = false; 1001 } 1002 1003 return 0; 1004 } 1005 1006 /** 1007 * rsi_mac80211_set_key() - This function sets type of key to be loaded. 1008 * @hw: Pointer to the ieee80211_hw structure. 1009 * @cmd: enum set_key_cmd. 1010 * @vif: Pointer to the ieee80211_vif structure. 1011 * @sta: Pointer to the ieee80211_sta structure. 1012 * @key: Pointer to the ieee80211_key_conf structure. 1013 * 1014 * Return: status: 0 on success, negative error code on failure. 1015 */ 1016 static int rsi_mac80211_set_key(struct ieee80211_hw *hw, 1017 enum set_key_cmd cmd, 1018 struct ieee80211_vif *vif, 1019 struct ieee80211_sta *sta, 1020 struct ieee80211_key_conf *key) 1021 { 1022 struct rsi_hw *adapter = hw->priv; 1023 struct rsi_common *common = adapter->priv; 1024 struct security_info *secinfo = &common->secinfo; 1025 int status; 1026 1027 mutex_lock(&common->mutex); 1028 switch (cmd) { 1029 case SET_KEY: 1030 secinfo->security_enable = true; 1031 status = rsi_hal_key_config(hw, vif, key, sta); 1032 if (status) { 1033 mutex_unlock(&common->mutex); 1034 return status; 1035 } 1036 1037 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 1038 secinfo->ptk_cipher = key->cipher; 1039 else 1040 secinfo->gtk_cipher = key->cipher; 1041 1042 key->hw_key_idx = key->keyidx; 1043 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 1044 1045 rsi_dbg(ERR_ZONE, "%s: RSI set_key\n", __func__); 1046 break; 1047 1048 case DISABLE_KEY: 1049 if (vif->type == NL80211_IFTYPE_STATION) 1050 secinfo->security_enable = false; 1051 rsi_dbg(ERR_ZONE, "%s: RSI del key\n", __func__); 1052 memset(key, 0, sizeof(struct ieee80211_key_conf)); 1053 status = rsi_hal_key_config(hw, vif, key, sta); 1054 break; 1055 1056 default: 1057 status = -EOPNOTSUPP; 1058 break; 1059 } 1060 1061 mutex_unlock(&common->mutex); 1062 return status; 1063 } 1064 1065 /** 1066 * rsi_mac80211_ampdu_action() - This function selects the AMPDU action for 1067 * the corresponding mlme_action flag and 1068 * informs the f/w regarding this. 1069 * @hw: Pointer to the ieee80211_hw structure. 1070 * @vif: Pointer to the ieee80211_vif structure. 1071 * @params: Pointer to A-MPDU action parameters 1072 * 1073 * Return: status: 0 on success, negative error code on failure. 1074 */ 1075 static int rsi_mac80211_ampdu_action(struct ieee80211_hw *hw, 1076 struct ieee80211_vif *vif, 1077 struct ieee80211_ampdu_params *params) 1078 { 1079 int status = -EOPNOTSUPP; 1080 struct rsi_hw *adapter = hw->priv; 1081 struct rsi_common *common = adapter->priv; 1082 struct rsi_sta *rsta = NULL; 1083 u16 seq_no = 0, seq_start = 0; 1084 u8 ii = 0; 1085 struct ieee80211_sta *sta = params->sta; 1086 u8 sta_id = 0; 1087 enum ieee80211_ampdu_mlme_action action = params->action; 1088 u16 tid = params->tid; 1089 u16 *ssn = ¶ms->ssn; 1090 u8 buf_size = params->buf_size; 1091 1092 for (ii = 0; ii < RSI_MAX_VIFS; ii++) { 1093 if (vif == adapter->vifs[ii]) 1094 break; 1095 } 1096 1097 mutex_lock(&common->mutex); 1098 1099 if (ssn != NULL) 1100 seq_no = *ssn; 1101 1102 if ((vif->type == NL80211_IFTYPE_AP) || 1103 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1104 rsta = rsi_find_sta(common, sta->addr); 1105 if (!rsta) { 1106 rsi_dbg(ERR_ZONE, "No station mapped\n"); 1107 status = 0; 1108 goto unlock; 1109 } 1110 sta_id = rsta->sta_id; 1111 } 1112 1113 rsi_dbg(INFO_ZONE, 1114 "%s: AMPDU action tid=%d ssn=0x%x, buf_size=%d sta_id=%d\n", 1115 __func__, tid, seq_no, buf_size, sta_id); 1116 1117 switch (action) { 1118 case IEEE80211_AMPDU_RX_START: 1119 status = rsi_send_aggregation_params_frame(common, 1120 tid, 1121 seq_no, 1122 buf_size, 1123 STA_RX_ADDBA_DONE, 1124 sta_id); 1125 break; 1126 1127 case IEEE80211_AMPDU_RX_STOP: 1128 status = rsi_send_aggregation_params_frame(common, 1129 tid, 1130 0, 1131 buf_size, 1132 STA_RX_DELBA, 1133 sta_id); 1134 break; 1135 1136 case IEEE80211_AMPDU_TX_START: 1137 if ((vif->type == NL80211_IFTYPE_STATION) || 1138 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) 1139 common->vif_info[ii].seq_start = seq_no; 1140 else if ((vif->type == NL80211_IFTYPE_AP) || 1141 (vif->type == NL80211_IFTYPE_P2P_GO)) 1142 rsta->seq_start[tid] = seq_no; 1143 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1144 status = 0; 1145 break; 1146 1147 case IEEE80211_AMPDU_TX_STOP_CONT: 1148 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1149 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1150 status = rsi_send_aggregation_params_frame(common, 1151 tid, 1152 seq_no, 1153 buf_size, 1154 STA_TX_DELBA, 1155 sta_id); 1156 if (!status) 1157 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1158 break; 1159 1160 case IEEE80211_AMPDU_TX_OPERATIONAL: 1161 if ((vif->type == NL80211_IFTYPE_STATION) || 1162 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) 1163 seq_start = common->vif_info[ii].seq_start; 1164 else if ((vif->type == NL80211_IFTYPE_AP) || 1165 (vif->type == NL80211_IFTYPE_P2P_GO)) 1166 seq_start = rsta->seq_start[tid]; 1167 status = rsi_send_aggregation_params_frame(common, 1168 tid, 1169 seq_start, 1170 buf_size, 1171 STA_TX_ADDBA_DONE, 1172 sta_id); 1173 break; 1174 1175 default: 1176 rsi_dbg(ERR_ZONE, "%s: Unknown AMPDU action\n", __func__); 1177 break; 1178 } 1179 1180 unlock: 1181 mutex_unlock(&common->mutex); 1182 return status; 1183 } 1184 1185 /** 1186 * rsi_mac80211_set_rts_threshold() - This function sets rts threshold value. 1187 * @hw: Pointer to the ieee80211_hw structure. 1188 * @value: Rts threshold value. 1189 * 1190 * Return: 0 on success. 1191 */ 1192 static int rsi_mac80211_set_rts_threshold(struct ieee80211_hw *hw, 1193 u32 value) 1194 { 1195 struct rsi_hw *adapter = hw->priv; 1196 struct rsi_common *common = adapter->priv; 1197 1198 mutex_lock(&common->mutex); 1199 common->rts_threshold = value; 1200 mutex_unlock(&common->mutex); 1201 1202 return 0; 1203 } 1204 1205 /** 1206 * rsi_mac80211_set_rate_mask() - This function sets bitrate_mask to be used. 1207 * @hw: Pointer to the ieee80211_hw structure 1208 * @vif: Pointer to the ieee80211_vif structure. 1209 * @mask: Pointer to the cfg80211_bitrate_mask structure. 1210 * 1211 * Return: 0 on success. 1212 */ 1213 static int rsi_mac80211_set_rate_mask(struct ieee80211_hw *hw, 1214 struct ieee80211_vif *vif, 1215 const struct cfg80211_bitrate_mask *mask) 1216 { 1217 struct rsi_hw *adapter = hw->priv; 1218 struct rsi_common *common = adapter->priv; 1219 enum nl80211_band band = hw->conf.chandef.chan->band; 1220 1221 mutex_lock(&common->mutex); 1222 common->fixedrate_mask[band] = 0; 1223 1224 if (mask->control[band].legacy == 0xfff) { 1225 common->fixedrate_mask[band] = 1226 (mask->control[band].ht_mcs[0] << 12); 1227 } else { 1228 common->fixedrate_mask[band] = 1229 mask->control[band].legacy; 1230 } 1231 mutex_unlock(&common->mutex); 1232 1233 return 0; 1234 } 1235 1236 /** 1237 * rsi_perform_cqm() - This function performs cqm. 1238 * @common: Pointer to the driver private structure. 1239 * @bssid: pointer to the bssid. 1240 * @rssi: RSSI value. 1241 */ 1242 static void rsi_perform_cqm(struct rsi_common *common, 1243 u8 *bssid, 1244 s8 rssi, 1245 struct ieee80211_vif *vif) 1246 { 1247 s8 last_event = common->cqm_info.last_cqm_event_rssi; 1248 int thold = common->cqm_info.rssi_thold; 1249 u32 hyst = common->cqm_info.rssi_hyst; 1250 enum nl80211_cqm_rssi_threshold_event event; 1251 1252 if (rssi < thold && (last_event == 0 || rssi < (last_event - hyst))) 1253 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW; 1254 else if (rssi > thold && 1255 (last_event == 0 || rssi > (last_event + hyst))) 1256 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; 1257 else 1258 return; 1259 1260 common->cqm_info.last_cqm_event_rssi = rssi; 1261 rsi_dbg(INFO_ZONE, "CQM: Notifying event: %d\n", event); 1262 ieee80211_cqm_rssi_notify(vif, event, rssi, GFP_KERNEL); 1263 1264 return; 1265 } 1266 1267 /** 1268 * rsi_fill_rx_status() - This function fills rx status in 1269 * ieee80211_rx_status structure. 1270 * @hw: Pointer to the ieee80211_hw structure. 1271 * @skb: Pointer to the socket buffer structure. 1272 * @common: Pointer to the driver private structure. 1273 * @rxs: Pointer to the ieee80211_rx_status structure. 1274 * 1275 * Return: None. 1276 */ 1277 static void rsi_fill_rx_status(struct ieee80211_hw *hw, 1278 struct sk_buff *skb, 1279 struct rsi_common *common, 1280 struct ieee80211_rx_status *rxs) 1281 { 1282 struct rsi_hw *adapter = common->priv; 1283 struct ieee80211_vif *vif; 1284 struct ieee80211_bss_conf *bss = NULL; 1285 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 1286 struct skb_info *rx_params = (struct skb_info *)info->driver_data; 1287 struct ieee80211_hdr *hdr; 1288 char rssi = rx_params->rssi; 1289 u8 hdrlen = 0; 1290 u8 channel = rx_params->channel; 1291 s32 freq; 1292 int i; 1293 1294 hdr = ((struct ieee80211_hdr *)(skb->data)); 1295 hdrlen = ieee80211_hdrlen(hdr->frame_control); 1296 1297 memset(info, 0, sizeof(struct ieee80211_tx_info)); 1298 1299 rxs->signal = -(rssi); 1300 1301 rxs->band = common->band; 1302 1303 freq = ieee80211_channel_to_frequency(channel, rxs->band); 1304 1305 if (freq) 1306 rxs->freq = freq; 1307 1308 if (ieee80211_has_protected(hdr->frame_control)) { 1309 if (rsi_is_cipher_wep(common)) { 1310 memmove(skb->data + 4, skb->data, hdrlen); 1311 skb_pull(skb, 4); 1312 } else { 1313 memmove(skb->data + 8, skb->data, hdrlen); 1314 skb_pull(skb, 8); 1315 rxs->flag |= RX_FLAG_MMIC_STRIPPED; 1316 } 1317 rxs->flag |= RX_FLAG_DECRYPTED; 1318 rxs->flag |= RX_FLAG_IV_STRIPPED; 1319 } 1320 1321 for (i = 0; i < RSI_MAX_VIFS; i++) { 1322 vif = adapter->vifs[i]; 1323 if (!vif) 1324 continue; 1325 if (vif->type == NL80211_IFTYPE_STATION) { 1326 bss = &vif->bss_conf; 1327 break; 1328 } 1329 } 1330 if (!bss) 1331 return; 1332 /* CQM only for connected AP beacons, the RSSI is a weighted avg */ 1333 if (bss->assoc && !(memcmp(bss->bssid, hdr->addr2, ETH_ALEN))) { 1334 if (ieee80211_is_beacon(hdr->frame_control)) 1335 rsi_perform_cqm(common, hdr->addr2, rxs->signal, vif); 1336 } 1337 1338 return; 1339 } 1340 1341 /** 1342 * rsi_indicate_pkt_to_os() - This function sends received packet to mac80211. 1343 * @common: Pointer to the driver private structure. 1344 * @skb: Pointer to the socket buffer structure. 1345 * 1346 * Return: None. 1347 */ 1348 void rsi_indicate_pkt_to_os(struct rsi_common *common, 1349 struct sk_buff *skb) 1350 { 1351 struct rsi_hw *adapter = common->priv; 1352 struct ieee80211_hw *hw = adapter->hw; 1353 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); 1354 1355 if ((common->iface_down) || (!adapter->sc_nvifs)) { 1356 dev_kfree_skb(skb); 1357 return; 1358 } 1359 1360 /* filling in the ieee80211_rx_status flags */ 1361 rsi_fill_rx_status(hw, skb, common, rx_status); 1362 1363 ieee80211_rx_irqsafe(hw, skb); 1364 } 1365 1366 static void rsi_set_min_rate(struct ieee80211_hw *hw, 1367 struct ieee80211_sta *sta, 1368 struct rsi_common *common) 1369 { 1370 u8 band = hw->conf.chandef.chan->band; 1371 u8 ii; 1372 u32 rate_bitmap; 1373 bool matched = false; 1374 1375 common->bitrate_mask[band] = sta->supp_rates[band]; 1376 1377 rate_bitmap = (common->fixedrate_mask[band] & sta->supp_rates[band]); 1378 1379 if (rate_bitmap & 0xfff) { 1380 /* Find out the min rate */ 1381 for (ii = 0; ii < ARRAY_SIZE(rsi_rates); ii++) { 1382 if (rate_bitmap & BIT(ii)) { 1383 common->min_rate = rsi_rates[ii].hw_value; 1384 matched = true; 1385 break; 1386 } 1387 } 1388 } 1389 1390 common->vif_info[0].is_ht = sta->ht_cap.ht_supported; 1391 1392 if ((common->vif_info[0].is_ht) && (rate_bitmap >> 12)) { 1393 for (ii = 0; ii < ARRAY_SIZE(rsi_mcsrates); ii++) { 1394 if ((rate_bitmap >> 12) & BIT(ii)) { 1395 common->min_rate = rsi_mcsrates[ii]; 1396 matched = true; 1397 break; 1398 } 1399 } 1400 } 1401 1402 if (!matched) 1403 common->min_rate = 0xffff; 1404 } 1405 1406 /** 1407 * rsi_mac80211_sta_add() - This function notifies driver about a peer getting 1408 * connected. 1409 * @hw: pointer to the ieee80211_hw structure. 1410 * @vif: Pointer to the ieee80211_vif structure. 1411 * @sta: Pointer to the ieee80211_sta structure. 1412 * 1413 * Return: 0 on success, negative error codes on failure. 1414 */ 1415 static int rsi_mac80211_sta_add(struct ieee80211_hw *hw, 1416 struct ieee80211_vif *vif, 1417 struct ieee80211_sta *sta) 1418 { 1419 struct rsi_hw *adapter = hw->priv; 1420 struct rsi_common *common = adapter->priv; 1421 bool sta_exist = false; 1422 struct rsi_sta *rsta; 1423 int status = 0; 1424 1425 rsi_dbg(INFO_ZONE, "Station Add: %pM\n", sta->addr); 1426 1427 mutex_lock(&common->mutex); 1428 1429 if ((vif->type == NL80211_IFTYPE_AP) || 1430 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1431 u8 cnt; 1432 int sta_idx = -1; 1433 int free_index = -1; 1434 1435 /* Check if max stations reached */ 1436 if (common->num_stations >= common->max_stations) { 1437 rsi_dbg(ERR_ZONE, "Reject: Max Stations exists\n"); 1438 status = -EOPNOTSUPP; 1439 goto unlock; 1440 } 1441 for (cnt = 0; cnt < common->max_stations; cnt++) { 1442 rsta = &common->stations[cnt]; 1443 1444 if (!rsta->sta) { 1445 if (free_index < 0) 1446 free_index = cnt; 1447 continue; 1448 } 1449 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) { 1450 rsi_dbg(INFO_ZONE, "Station exists\n"); 1451 sta_idx = cnt; 1452 sta_exist = true; 1453 break; 1454 } 1455 } 1456 if (!sta_exist) { 1457 if (free_index >= 0) 1458 sta_idx = free_index; 1459 } 1460 if (sta_idx < 0) { 1461 rsi_dbg(ERR_ZONE, 1462 "%s: Some problem reaching here...\n", 1463 __func__); 1464 status = -EINVAL; 1465 goto unlock; 1466 } 1467 rsta = &common->stations[sta_idx]; 1468 rsta->sta = sta; 1469 rsta->sta_id = sta_idx; 1470 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++) 1471 rsta->start_tx_aggr[cnt] = false; 1472 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++) 1473 rsta->seq_start[cnt] = 0; 1474 if (!sta_exist) { 1475 rsi_dbg(INFO_ZONE, "New Station\n"); 1476 1477 /* Send peer notify to device */ 1478 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n"); 1479 rsi_inform_bss_status(common, RSI_OPMODE_AP, 1, 1480 sta->addr, sta->wme, sta->aid, 1481 sta, sta_idx, 0, vif); 1482 1483 if (common->key) { 1484 struct ieee80211_key_conf *key = common->key; 1485 1486 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) || 1487 (key->cipher == WLAN_CIPHER_SUITE_WEP40)) 1488 rsi_hal_load_key(adapter->priv, 1489 key->key, 1490 key->keylen, 1491 RSI_PAIRWISE_KEY, 1492 key->keyidx, 1493 key->cipher, 1494 sta_idx, 1495 vif); 1496 } 1497 1498 common->num_stations++; 1499 } 1500 } 1501 1502 if ((vif->type == NL80211_IFTYPE_STATION) || 1503 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) { 1504 rsi_set_min_rate(hw, sta, common); 1505 if (sta->ht_cap.ht_supported) { 1506 common->vif_info[0].is_ht = true; 1507 common->bitrate_mask[NL80211_BAND_2GHZ] = 1508 sta->supp_rates[NL80211_BAND_2GHZ]; 1509 if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) || 1510 (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40)) 1511 common->vif_info[0].sgi = true; 1512 ieee80211_start_tx_ba_session(sta, 0, 0); 1513 } 1514 } 1515 1516 unlock: 1517 mutex_unlock(&common->mutex); 1518 1519 return status; 1520 } 1521 1522 /** 1523 * rsi_mac80211_sta_remove() - This function notifies driver about a peer 1524 * getting disconnected. 1525 * @hw: Pointer to the ieee80211_hw structure. 1526 * @vif: Pointer to the ieee80211_vif structure. 1527 * @sta: Pointer to the ieee80211_sta structure. 1528 * 1529 * Return: 0 on success, negative error codes on failure. 1530 */ 1531 static int rsi_mac80211_sta_remove(struct ieee80211_hw *hw, 1532 struct ieee80211_vif *vif, 1533 struct ieee80211_sta *sta) 1534 { 1535 struct rsi_hw *adapter = hw->priv; 1536 struct rsi_common *common = adapter->priv; 1537 struct ieee80211_bss_conf *bss = &vif->bss_conf; 1538 struct rsi_sta *rsta; 1539 1540 rsi_dbg(INFO_ZONE, "Station Remove: %pM\n", sta->addr); 1541 1542 mutex_lock(&common->mutex); 1543 1544 if ((vif->type == NL80211_IFTYPE_AP) || 1545 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1546 u8 sta_idx, cnt; 1547 1548 /* Send peer notify to device */ 1549 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n"); 1550 for (sta_idx = 0; sta_idx < common->max_stations; sta_idx++) { 1551 rsta = &common->stations[sta_idx]; 1552 1553 if (!rsta->sta) 1554 continue; 1555 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) { 1556 rsi_inform_bss_status(common, RSI_OPMODE_AP, 0, 1557 sta->addr, sta->wme, 1558 sta->aid, sta, sta_idx, 1559 0, vif); 1560 rsta->sta = NULL; 1561 rsta->sta_id = -1; 1562 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++) 1563 rsta->start_tx_aggr[cnt] = false; 1564 if (common->num_stations > 0) 1565 common->num_stations--; 1566 break; 1567 } 1568 } 1569 if (sta_idx >= common->max_stations) 1570 rsi_dbg(ERR_ZONE, "%s: No station found\n", __func__); 1571 } 1572 1573 if ((vif->type == NL80211_IFTYPE_STATION) || 1574 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) { 1575 /* Resetting all the fields to default values */ 1576 memcpy((u8 *)bss->bssid, (u8 *)sta->addr, ETH_ALEN); 1577 bss->qos = sta->wme; 1578 common->bitrate_mask[NL80211_BAND_2GHZ] = 0; 1579 common->bitrate_mask[NL80211_BAND_5GHZ] = 0; 1580 common->min_rate = 0xffff; 1581 common->vif_info[0].is_ht = false; 1582 common->vif_info[0].sgi = false; 1583 common->vif_info[0].seq_start = 0; 1584 common->secinfo.ptk_cipher = 0; 1585 common->secinfo.gtk_cipher = 0; 1586 if (!common->iface_down) 1587 rsi_send_rx_filter_frame(common, 0); 1588 } 1589 mutex_unlock(&common->mutex); 1590 1591 return 0; 1592 } 1593 1594 /** 1595 * rsi_mac80211_set_antenna() - This function is used to configure 1596 * tx and rx antennas. 1597 * @hw: Pointer to the ieee80211_hw structure. 1598 * @tx_ant: Bitmap for tx antenna 1599 * @rx_ant: Bitmap for rx antenna 1600 * 1601 * Return: 0 on success, Negative error code on failure. 1602 */ 1603 static int rsi_mac80211_set_antenna(struct ieee80211_hw *hw, 1604 u32 tx_ant, u32 rx_ant) 1605 { 1606 struct rsi_hw *adapter = hw->priv; 1607 struct rsi_common *common = adapter->priv; 1608 u8 antenna = 0; 1609 1610 if (tx_ant > 1 || rx_ant > 1) { 1611 rsi_dbg(ERR_ZONE, 1612 "Invalid antenna selection (tx: %d, rx:%d)\n", 1613 tx_ant, rx_ant); 1614 rsi_dbg(ERR_ZONE, 1615 "Use 0 for int_ant, 1 for ext_ant\n"); 1616 return -EINVAL; 1617 } 1618 1619 rsi_dbg(INFO_ZONE, "%s: Antenna map Tx %x Rx %d\n", 1620 __func__, tx_ant, rx_ant); 1621 1622 mutex_lock(&common->mutex); 1623 1624 antenna = tx_ant ? ANTENNA_SEL_UFL : ANTENNA_SEL_INT; 1625 if (common->ant_in_use != antenna) 1626 if (rsi_set_antenna(common, antenna)) 1627 goto fail_set_antenna; 1628 1629 rsi_dbg(INFO_ZONE, "(%s) Antenna path configured successfully\n", 1630 tx_ant ? "UFL" : "INT"); 1631 1632 common->ant_in_use = antenna; 1633 1634 mutex_unlock(&common->mutex); 1635 1636 return 0; 1637 1638 fail_set_antenna: 1639 rsi_dbg(ERR_ZONE, "%s: Failed.\n", __func__); 1640 mutex_unlock(&common->mutex); 1641 return -EINVAL; 1642 } 1643 1644 /** 1645 * rsi_mac80211_get_antenna() - This function is used to configure 1646 * tx and rx antennas. 1647 * 1648 * @hw: Pointer to the ieee80211_hw structure. 1649 * @tx_ant: Bitmap for tx antenna 1650 * @rx_ant: Bitmap for rx antenna 1651 * 1652 * Return: 0 on success, negative error codes on failure. 1653 */ 1654 static int rsi_mac80211_get_antenna(struct ieee80211_hw *hw, 1655 u32 *tx_ant, u32 *rx_ant) 1656 { 1657 struct rsi_hw *adapter = hw->priv; 1658 struct rsi_common *common = adapter->priv; 1659 1660 mutex_lock(&common->mutex); 1661 1662 *tx_ant = (common->ant_in_use == ANTENNA_SEL_UFL) ? 1 : 0; 1663 *rx_ant = 0; 1664 1665 mutex_unlock(&common->mutex); 1666 1667 return 0; 1668 } 1669 1670 static int rsi_map_region_code(enum nl80211_dfs_regions region_code) 1671 { 1672 switch (region_code) { 1673 case NL80211_DFS_FCC: 1674 return RSI_REGION_FCC; 1675 case NL80211_DFS_ETSI: 1676 return RSI_REGION_ETSI; 1677 case NL80211_DFS_JP: 1678 return RSI_REGION_TELEC; 1679 case NL80211_DFS_UNSET: 1680 return RSI_REGION_WORLD; 1681 } 1682 return RSI_REGION_WORLD; 1683 } 1684 1685 static void rsi_reg_notify(struct wiphy *wiphy, 1686 struct regulatory_request *request) 1687 { 1688 struct ieee80211_supported_band *sband; 1689 struct ieee80211_channel *ch; 1690 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 1691 struct rsi_hw * adapter = hw->priv; 1692 struct rsi_common *common = adapter->priv; 1693 int i; 1694 1695 mutex_lock(&common->mutex); 1696 1697 rsi_dbg(INFO_ZONE, "country = %s dfs_region = %d\n", 1698 request->alpha2, request->dfs_region); 1699 1700 if (common->num_supp_bands > 1) { 1701 sband = wiphy->bands[NL80211_BAND_5GHZ]; 1702 1703 for (i = 0; i < sband->n_channels; i++) { 1704 ch = &sband->channels[i]; 1705 if (ch->flags & IEEE80211_CHAN_DISABLED) 1706 continue; 1707 1708 if (ch->flags & IEEE80211_CHAN_RADAR) 1709 ch->flags |= IEEE80211_CHAN_NO_IR; 1710 } 1711 } 1712 adapter->dfs_region = rsi_map_region_code(request->dfs_region); 1713 rsi_dbg(INFO_ZONE, "RSI region code = %d\n", adapter->dfs_region); 1714 1715 adapter->country[0] = request->alpha2[0]; 1716 adapter->country[1] = request->alpha2[1]; 1717 1718 mutex_unlock(&common->mutex); 1719 } 1720 1721 static void rsi_mac80211_rfkill_poll(struct ieee80211_hw *hw) 1722 { 1723 struct rsi_hw *adapter = hw->priv; 1724 struct rsi_common *common = adapter->priv; 1725 1726 mutex_lock(&common->mutex); 1727 if (common->fsm_state != FSM_MAC_INIT_DONE) 1728 wiphy_rfkill_set_hw_state(hw->wiphy, true); 1729 else 1730 wiphy_rfkill_set_hw_state(hw->wiphy, false); 1731 mutex_unlock(&common->mutex); 1732 } 1733 1734 static void rsi_resume_conn_channel(struct rsi_common *common) 1735 { 1736 struct rsi_hw *adapter = common->priv; 1737 struct ieee80211_vif *vif; 1738 int cnt; 1739 1740 for (cnt = 0; cnt < RSI_MAX_VIFS; cnt++) { 1741 vif = adapter->vifs[cnt]; 1742 if (!vif) 1743 continue; 1744 1745 if ((vif->type == NL80211_IFTYPE_AP) || 1746 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1747 rsi_switch_channel(adapter, vif); 1748 break; 1749 } 1750 if (((vif->type == NL80211_IFTYPE_STATION) || 1751 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) && 1752 vif->bss_conf.assoc) { 1753 rsi_switch_channel(adapter, vif); 1754 break; 1755 } 1756 } 1757 } 1758 1759 void rsi_roc_timeout(struct timer_list *t) 1760 { 1761 struct rsi_common *common = from_timer(common, t, roc_timer); 1762 1763 rsi_dbg(INFO_ZONE, "Remain on channel expired\n"); 1764 1765 mutex_lock(&common->mutex); 1766 ieee80211_remain_on_channel_expired(common->priv->hw); 1767 1768 if (timer_pending(&common->roc_timer)) 1769 del_timer(&common->roc_timer); 1770 1771 rsi_resume_conn_channel(common); 1772 mutex_unlock(&common->mutex); 1773 } 1774 1775 static int rsi_mac80211_roc(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1776 struct ieee80211_channel *chan, int duration, 1777 enum ieee80211_roc_type type) 1778 { 1779 struct rsi_hw *adapter = (struct rsi_hw *)hw->priv; 1780 struct rsi_common *common = (struct rsi_common *)adapter->priv; 1781 int status = 0; 1782 1783 rsi_dbg(INFO_ZONE, "***** Remain on channel *****\n"); 1784 1785 mutex_lock(&common->mutex); 1786 rsi_dbg(INFO_ZONE, "%s: channel: %d duration: %dms\n", 1787 __func__, chan->hw_value, duration); 1788 1789 if (timer_pending(&common->roc_timer)) { 1790 rsi_dbg(INFO_ZONE, "Stop on-going ROC\n"); 1791 del_timer(&common->roc_timer); 1792 } 1793 common->roc_timer.expires = msecs_to_jiffies(duration) + jiffies; 1794 add_timer(&common->roc_timer); 1795 1796 /* Configure band */ 1797 if (rsi_band_check(common, chan)) { 1798 rsi_dbg(ERR_ZONE, "Failed to set band\n"); 1799 status = -EINVAL; 1800 goto out; 1801 } 1802 1803 /* Configure channel */ 1804 if (rsi_set_channel(common, chan)) { 1805 rsi_dbg(ERR_ZONE, "Failed to set the channel\n"); 1806 status = -EINVAL; 1807 goto out; 1808 } 1809 1810 common->roc_vif = vif; 1811 ieee80211_ready_on_channel(hw); 1812 rsi_dbg(INFO_ZONE, "%s: Ready on channel :%d\n", 1813 __func__, chan->hw_value); 1814 1815 out: 1816 mutex_unlock(&common->mutex); 1817 1818 return status; 1819 } 1820 1821 static int rsi_mac80211_cancel_roc(struct ieee80211_hw *hw) 1822 { 1823 struct rsi_hw *adapter = hw->priv; 1824 struct rsi_common *common = adapter->priv; 1825 1826 rsi_dbg(INFO_ZONE, "Cancel remain on channel\n"); 1827 1828 mutex_lock(&common->mutex); 1829 if (!timer_pending(&common->roc_timer)) { 1830 mutex_unlock(&common->mutex); 1831 return 0; 1832 } 1833 1834 del_timer(&common->roc_timer); 1835 1836 rsi_resume_conn_channel(common); 1837 mutex_unlock(&common->mutex); 1838 1839 return 0; 1840 } 1841 1842 #ifdef CONFIG_PM 1843 static const struct wiphy_wowlan_support rsi_wowlan_support = { 1844 .flags = WIPHY_WOWLAN_ANY | 1845 WIPHY_WOWLAN_MAGIC_PKT | 1846 WIPHY_WOWLAN_DISCONNECT | 1847 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 1848 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 1849 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 1850 WIPHY_WOWLAN_4WAY_HANDSHAKE, 1851 }; 1852 1853 static u16 rsi_wow_map_triggers(struct rsi_common *common, 1854 struct cfg80211_wowlan *wowlan) 1855 { 1856 u16 wow_triggers = 0; 1857 1858 rsi_dbg(INFO_ZONE, "Mapping wowlan triggers\n"); 1859 1860 if (wowlan->any) 1861 wow_triggers |= RSI_WOW_ANY; 1862 if (wowlan->magic_pkt) 1863 wow_triggers |= RSI_WOW_MAGIC_PKT; 1864 if (wowlan->disconnect) 1865 wow_triggers |= RSI_WOW_DISCONNECT; 1866 if (wowlan->gtk_rekey_failure || wowlan->eap_identity_req || 1867 wowlan->four_way_handshake) 1868 wow_triggers |= RSI_WOW_GTK_REKEY; 1869 1870 return wow_triggers; 1871 } 1872 1873 int rsi_config_wowlan(struct rsi_hw *adapter, struct cfg80211_wowlan *wowlan) 1874 { 1875 struct rsi_common *common = adapter->priv; 1876 u16 triggers = 0; 1877 u16 rx_filter_word = 0; 1878 struct ieee80211_bss_conf *bss = NULL; 1879 1880 rsi_dbg(INFO_ZONE, "Config WoWLAN to device\n"); 1881 1882 if (!adapter->vifs[0]) 1883 return -EINVAL; 1884 1885 bss = &adapter->vifs[0]->bss_conf; 1886 1887 if (WARN_ON(!wowlan)) { 1888 rsi_dbg(ERR_ZONE, "WoW triggers not enabled\n"); 1889 return -EINVAL; 1890 } 1891 1892 common->wow_flags |= RSI_WOW_ENABLED; 1893 triggers = rsi_wow_map_triggers(common, wowlan); 1894 if (!triggers) { 1895 rsi_dbg(ERR_ZONE, "%s:No valid WoW triggers\n", __func__); 1896 return -EINVAL; 1897 } 1898 if (!bss->assoc) { 1899 rsi_dbg(ERR_ZONE, 1900 "Cannot configure WoWLAN (Station not connected)\n"); 1901 common->wow_flags |= RSI_WOW_NO_CONNECTION; 1902 return 0; 1903 } 1904 rsi_dbg(INFO_ZONE, "TRIGGERS %x\n", triggers); 1905 1906 if (common->coex_mode > 1) 1907 rsi_disable_ps(adapter, adapter->vifs[0]); 1908 1909 rsi_send_wowlan_request(common, triggers, 1); 1910 1911 /** 1912 * Increase the beacon_miss threshold & keep-alive timers in 1913 * vap_update frame 1914 */ 1915 rsi_send_vap_dynamic_update(common); 1916 1917 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | DISALLOW_BEACONS); 1918 rsi_send_rx_filter_frame(common, rx_filter_word); 1919 1920 return 0; 1921 } 1922 EXPORT_SYMBOL(rsi_config_wowlan); 1923 1924 static int rsi_mac80211_suspend(struct ieee80211_hw *hw, 1925 struct cfg80211_wowlan *wowlan) 1926 { 1927 struct rsi_hw *adapter = hw->priv; 1928 struct rsi_common *common = adapter->priv; 1929 1930 rsi_dbg(INFO_ZONE, "%s: mac80211 suspend\n", __func__); 1931 mutex_lock(&common->mutex); 1932 if (rsi_config_wowlan(adapter, wowlan)) { 1933 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n"); 1934 mutex_unlock(&common->mutex); 1935 return 1; 1936 } 1937 mutex_unlock(&common->mutex); 1938 1939 return 0; 1940 } 1941 1942 static int rsi_mac80211_resume(struct ieee80211_hw *hw) 1943 { 1944 u16 rx_filter_word = 0; 1945 struct rsi_hw *adapter = hw->priv; 1946 struct rsi_common *common = adapter->priv; 1947 1948 common->wow_flags = 0; 1949 1950 rsi_dbg(INFO_ZONE, "%s: mac80211 resume\n", __func__); 1951 1952 if (common->hibernate_resume) { 1953 common->mac_ops_resumed = true; 1954 /* Device need a complete restart of all MAC operations. 1955 * returning 1 will serve this purpose. 1956 */ 1957 return 1; 1958 } 1959 1960 mutex_lock(&common->mutex); 1961 rsi_send_wowlan_request(common, 0, 0); 1962 1963 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | ALLOW_CTRL_ASSOC_PEER | 1964 ALLOW_MGMT_ASSOC_PEER); 1965 rsi_send_rx_filter_frame(common, rx_filter_word); 1966 mutex_unlock(&common->mutex); 1967 1968 return 0; 1969 } 1970 1971 #endif 1972 1973 static const struct ieee80211_ops mac80211_ops = { 1974 .tx = rsi_mac80211_tx, 1975 .start = rsi_mac80211_start, 1976 .stop = rsi_mac80211_stop, 1977 .add_interface = rsi_mac80211_add_interface, 1978 .remove_interface = rsi_mac80211_remove_interface, 1979 .config = rsi_mac80211_config, 1980 .bss_info_changed = rsi_mac80211_bss_info_changed, 1981 .conf_tx = rsi_mac80211_conf_tx, 1982 .configure_filter = rsi_mac80211_conf_filter, 1983 .set_key = rsi_mac80211_set_key, 1984 .set_rts_threshold = rsi_mac80211_set_rts_threshold, 1985 .set_bitrate_mask = rsi_mac80211_set_rate_mask, 1986 .ampdu_action = rsi_mac80211_ampdu_action, 1987 .sta_add = rsi_mac80211_sta_add, 1988 .sta_remove = rsi_mac80211_sta_remove, 1989 .set_antenna = rsi_mac80211_set_antenna, 1990 .get_antenna = rsi_mac80211_get_antenna, 1991 .rfkill_poll = rsi_mac80211_rfkill_poll, 1992 .remain_on_channel = rsi_mac80211_roc, 1993 .cancel_remain_on_channel = rsi_mac80211_cancel_roc, 1994 #ifdef CONFIG_PM 1995 .suspend = rsi_mac80211_suspend, 1996 .resume = rsi_mac80211_resume, 1997 #endif 1998 .hw_scan = rsi_mac80211_hw_scan_start, 1999 .cancel_hw_scan = rsi_mac80211_cancel_hw_scan, 2000 }; 2001 2002 /** 2003 * rsi_mac80211_attach() - This function is used to initialize Mac80211 stack. 2004 * @common: Pointer to the driver private structure. 2005 * 2006 * Return: 0 on success, negative error codes on failure. 2007 */ 2008 int rsi_mac80211_attach(struct rsi_common *common) 2009 { 2010 int status = 0; 2011 struct ieee80211_hw *hw = NULL; 2012 struct wiphy *wiphy = NULL; 2013 struct rsi_hw *adapter = common->priv; 2014 u8 addr_mask[ETH_ALEN] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x3}; 2015 2016 rsi_dbg(INIT_ZONE, "%s: Performing mac80211 attach\n", __func__); 2017 2018 hw = ieee80211_alloc_hw(sizeof(struct rsi_hw), &mac80211_ops); 2019 if (!hw) { 2020 rsi_dbg(ERR_ZONE, "%s: ieee80211 hw alloc failed\n", __func__); 2021 return -ENOMEM; 2022 } 2023 2024 wiphy = hw->wiphy; 2025 2026 SET_IEEE80211_DEV(hw, adapter->device); 2027 2028 hw->priv = adapter; 2029 adapter->hw = hw; 2030 2031 ieee80211_hw_set(hw, SIGNAL_DBM); 2032 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 2033 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 2034 ieee80211_hw_set(hw, SUPPORTS_PS); 2035 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 2036 2037 hw->queues = MAX_HW_QUEUES; 2038 hw->extra_tx_headroom = RSI_NEEDED_HEADROOM; 2039 2040 hw->max_rates = 1; 2041 hw->max_rate_tries = MAX_RETRIES; 2042 hw->uapsd_queues = RSI_IEEE80211_UAPSD_QUEUES; 2043 hw->uapsd_max_sp_len = IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL; 2044 2045 hw->max_tx_aggregation_subframes = RSI_MAX_TX_AGGR_FRMS; 2046 hw->max_rx_aggregation_subframes = RSI_MAX_RX_AGGR_FRMS; 2047 hw->rate_control_algorithm = "AARF"; 2048 2049 SET_IEEE80211_PERM_ADDR(hw, common->mac_addr); 2050 ether_addr_copy(hw->wiphy->addr_mask, addr_mask); 2051 2052 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 2053 BIT(NL80211_IFTYPE_AP) | 2054 BIT(NL80211_IFTYPE_P2P_DEVICE) | 2055 BIT(NL80211_IFTYPE_P2P_CLIENT) | 2056 BIT(NL80211_IFTYPE_P2P_GO); 2057 2058 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 2059 wiphy->retry_short = RETRY_SHORT; 2060 wiphy->retry_long = RETRY_LONG; 2061 wiphy->frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD; 2062 wiphy->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 2063 wiphy->flags = 0; 2064 2065 wiphy->available_antennas_rx = 1; 2066 wiphy->available_antennas_tx = 1; 2067 2068 status = rsi_register_rates_channels(adapter, NL80211_BAND_2GHZ); 2069 if (status) 2070 return status; 2071 wiphy->bands[NL80211_BAND_2GHZ] = 2072 &adapter->sbands[NL80211_BAND_2GHZ]; 2073 if (common->num_supp_bands > 1) { 2074 status = rsi_register_rates_channels(adapter, 2075 NL80211_BAND_5GHZ); 2076 if (status) 2077 return status; 2078 wiphy->bands[NL80211_BAND_5GHZ] = 2079 &adapter->sbands[NL80211_BAND_5GHZ]; 2080 } 2081 2082 /* AP Parameters */ 2083 wiphy->max_ap_assoc_sta = rsi_max_ap_stas[common->oper_mode - 1]; 2084 common->max_stations = wiphy->max_ap_assoc_sta; 2085 rsi_dbg(ERR_ZONE, "Max Stations Allowed = %d\n", common->max_stations); 2086 hw->sta_data_size = sizeof(struct rsi_sta); 2087 2088 wiphy->max_scan_ssids = RSI_MAX_SCAN_SSIDS; 2089 wiphy->max_scan_ie_len = RSI_MAX_SCAN_IE_LEN; 2090 wiphy->flags = WIPHY_FLAG_REPORTS_OBSS; 2091 wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 2092 wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER; 2093 wiphy->reg_notifier = rsi_reg_notify; 2094 2095 #ifdef CONFIG_PM 2096 wiphy->wowlan = &rsi_wowlan_support; 2097 #endif 2098 2099 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 2100 2101 /* Wi-Fi direct parameters */ 2102 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 2103 wiphy->flags |= WIPHY_FLAG_OFFCHAN_TX; 2104 wiphy->max_remain_on_channel_duration = 10000; 2105 hw->max_listen_interval = 10; 2106 wiphy->iface_combinations = rsi_iface_combinations; 2107 wiphy->n_iface_combinations = ARRAY_SIZE(rsi_iface_combinations); 2108 2109 if (common->coex_mode > 1) 2110 wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 2111 2112 status = ieee80211_register_hw(hw); 2113 if (status) 2114 return status; 2115 2116 return rsi_init_dbgfs(adapter); 2117 } 2118