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; 240 241 rsi_dbg(INFO_ZONE, "***** Hardware scan start *****\n"); 242 common->mac_ops_resumed = false; 243 244 if (common->fsm_state != FSM_MAC_INIT_DONE) 245 return -ENODEV; 246 247 if ((common->wow_flags & RSI_WOW_ENABLED) || 248 scan_req->n_channels == 0) 249 return -EINVAL; 250 251 /* Scan already in progress. So return */ 252 if (common->bgscan_en) 253 return -EBUSY; 254 255 /* If STA is not connected, return with special value 1, in order 256 * to start sw_scan in mac80211 257 */ 258 if (!vif->cfg.assoc) 259 return 1; 260 261 mutex_lock(&common->mutex); 262 common->hwscan = scan_req; 263 if (!rsi_send_bgscan_params(common, RSI_START_BGSCAN)) { 264 if (!rsi_send_bgscan_probe_req(common, vif)) { 265 rsi_dbg(INFO_ZONE, "Background scan started...\n"); 266 common->bgscan_en = true; 267 } 268 } 269 mutex_unlock(&common->mutex); 270 271 return 0; 272 } 273 274 static void rsi_mac80211_cancel_hw_scan(struct ieee80211_hw *hw, 275 struct ieee80211_vif *vif) 276 { 277 struct rsi_hw *adapter = hw->priv; 278 struct rsi_common *common = adapter->priv; 279 struct cfg80211_scan_info info; 280 281 rsi_dbg(INFO_ZONE, "***** Hardware scan stop *****\n"); 282 mutex_lock(&common->mutex); 283 284 if (common->bgscan_en) { 285 if (!rsi_send_bgscan_params(common, RSI_STOP_BGSCAN)) 286 common->bgscan_en = false; 287 info.aborted = false; 288 ieee80211_scan_completed(adapter->hw, &info); 289 rsi_dbg(INFO_ZONE, "Back ground scan cancelled\n"); 290 } 291 common->hwscan = NULL; 292 mutex_unlock(&common->mutex); 293 } 294 295 /** 296 * rsi_mac80211_detach() - This function is used to de-initialize the 297 * Mac80211 stack. 298 * @adapter: Pointer to the adapter structure. 299 * 300 * Return: None. 301 */ 302 void rsi_mac80211_detach(struct rsi_hw *adapter) 303 { 304 struct ieee80211_hw *hw = adapter->hw; 305 enum nl80211_band band; 306 307 if (hw) { 308 ieee80211_stop_queues(hw); 309 ieee80211_unregister_hw(hw); 310 ieee80211_free_hw(hw); 311 adapter->hw = NULL; 312 } 313 314 for (band = 0; band < NUM_NL80211_BANDS; band++) { 315 struct ieee80211_supported_band *sband = 316 &adapter->sbands[band]; 317 318 kfree(sband->channels); 319 } 320 321 #ifdef CONFIG_RSI_DEBUGFS 322 rsi_remove_dbgfs(adapter); 323 kfree(adapter->dfsentry); 324 #endif 325 } 326 EXPORT_SYMBOL_GPL(rsi_mac80211_detach); 327 328 /** 329 * rsi_indicate_tx_status() - This function indicates the transmit status. 330 * @adapter: Pointer to the adapter structure. 331 * @skb: Pointer to the socket buffer structure. 332 * @status: Status 333 * 334 * Return: None. 335 */ 336 void rsi_indicate_tx_status(struct rsi_hw *adapter, 337 struct sk_buff *skb, 338 int status) 339 { 340 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 341 struct skb_info *tx_params; 342 343 if (!adapter->hw) { 344 rsi_dbg(ERR_ZONE, "##### No MAC #####\n"); 345 return; 346 } 347 348 if (!status) 349 info->flags |= IEEE80211_TX_STAT_ACK; 350 351 tx_params = (struct skb_info *)info->driver_data; 352 skb_pull(skb, tx_params->internal_hdr_size); 353 memset(info->driver_data, 0, IEEE80211_TX_INFO_DRIVER_DATA_SIZE); 354 355 ieee80211_tx_status_irqsafe(adapter->hw, skb); 356 } 357 358 /** 359 * rsi_mac80211_tx() - This is the handler that 802.11 module calls for each 360 * transmitted frame.SKB contains the buffer starting 361 * from the IEEE 802.11 header. 362 * @hw: Pointer to the ieee80211_hw structure. 363 * @control: Pointer to the ieee80211_tx_control structure 364 * @skb: Pointer to the socket buffer structure. 365 * 366 * Return: None 367 */ 368 static void rsi_mac80211_tx(struct ieee80211_hw *hw, 369 struct ieee80211_tx_control *control, 370 struct sk_buff *skb) 371 { 372 struct rsi_hw *adapter = hw->priv; 373 struct rsi_common *common = adapter->priv; 374 struct ieee80211_hdr *wlh = (struct ieee80211_hdr *)skb->data; 375 376 if (ieee80211_is_auth(wlh->frame_control)) 377 common->mac_ops_resumed = false; 378 379 rsi_core_xmit(common, skb); 380 } 381 382 /** 383 * rsi_mac80211_start() - This is first handler that 802.11 module calls, since 384 * the driver init is complete by then, just 385 * returns success. 386 * @hw: Pointer to the ieee80211_hw structure. 387 * 388 * Return: 0 as success. 389 */ 390 static int rsi_mac80211_start(struct ieee80211_hw *hw) 391 { 392 struct rsi_hw *adapter = hw->priv; 393 struct rsi_common *common = adapter->priv; 394 395 rsi_dbg(ERR_ZONE, "===> Interface UP <===\n"); 396 mutex_lock(&common->mutex); 397 if (common->hibernate_resume) { 398 common->reinit_hw = true; 399 adapter->host_intf_ops->reinit_device(adapter); 400 wait_for_completion(&adapter->priv->wlan_init_completion); 401 } 402 common->iface_down = false; 403 wiphy_rfkill_start_polling(hw->wiphy); 404 rsi_send_rx_filter_frame(common, 0); 405 mutex_unlock(&common->mutex); 406 407 return 0; 408 } 409 410 /** 411 * rsi_mac80211_stop() - This is the last handler that 802.11 module calls. 412 * @hw: Pointer to the ieee80211_hw structure. 413 * @suspend: true if the this was called from suspend flow. 414 * 415 * Return: None. 416 */ 417 static void rsi_mac80211_stop(struct ieee80211_hw *hw, bool suspend) 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 for (i = 0; i < common->max_stations; i++) 514 common->stations[i].sta = NULL; 515 } 516 517 mutex_unlock(&common->mutex); 518 519 return 0; 520 } 521 522 /** 523 * rsi_mac80211_remove_interface() - This function notifies driver that an 524 * interface is going down. 525 * @hw: Pointer to the ieee80211_hw structure. 526 * @vif: Pointer to the ieee80211_vif structure. 527 * 528 * Return: None. 529 */ 530 static void rsi_mac80211_remove_interface(struct ieee80211_hw *hw, 531 struct ieee80211_vif *vif) 532 { 533 struct rsi_hw *adapter = hw->priv; 534 struct rsi_common *common = adapter->priv; 535 enum opmode opmode; 536 int i; 537 538 rsi_dbg(INFO_ZONE, "Remove Interface Called\n"); 539 540 mutex_lock(&common->mutex); 541 542 if (adapter->sc_nvifs <= 0) { 543 mutex_unlock(&common->mutex); 544 return; 545 } 546 547 opmode = rsi_map_intf_mode(vif->type); 548 if (opmode == RSI_OPMODE_UNSUPPORTED) { 549 rsi_dbg(ERR_ZONE, "Opmode error : %d\n", opmode); 550 mutex_unlock(&common->mutex); 551 return; 552 } 553 for (i = 0; i < RSI_MAX_VIFS; i++) { 554 if (!adapter->vifs[i]) 555 continue; 556 if (vif == adapter->vifs[i]) { 557 rsi_set_vap_capabilities(common, opmode, vif->addr, 558 i, VAP_DELETE); 559 adapter->sc_nvifs--; 560 adapter->vifs[i] = NULL; 561 } 562 } 563 mutex_unlock(&common->mutex); 564 } 565 566 /** 567 * rsi_channel_change() - This function is a performs the checks 568 * required for changing a channel and sets 569 * the channel accordingly. 570 * @hw: Pointer to the ieee80211_hw structure. 571 * 572 * Return: 0 on success, negative error code on failure. 573 */ 574 static int rsi_channel_change(struct ieee80211_hw *hw) 575 { 576 struct rsi_hw *adapter = hw->priv; 577 struct rsi_common *common = adapter->priv; 578 int status = -EOPNOTSUPP; 579 struct ieee80211_channel *curchan = hw->conf.chandef.chan; 580 u16 channel = curchan->hw_value; 581 struct ieee80211_vif *vif; 582 bool assoc = false; 583 int i; 584 585 rsi_dbg(INFO_ZONE, 586 "%s: Set channel: %d MHz type: %d channel_no %d\n", 587 __func__, curchan->center_freq, 588 curchan->flags, channel); 589 590 for (i = 0; i < RSI_MAX_VIFS; i++) { 591 vif = adapter->vifs[i]; 592 if (!vif) 593 continue; 594 if (vif->type == NL80211_IFTYPE_STATION) { 595 if (vif->cfg.assoc) { 596 assoc = true; 597 break; 598 } 599 } 600 } 601 if (assoc) { 602 if (!common->hw_data_qs_blocked && 603 (rsi_get_connected_channel(vif) != channel)) { 604 rsi_dbg(INFO_ZONE, "blk data q %d\n", channel); 605 if (!rsi_send_block_unblock_frame(common, true)) 606 common->hw_data_qs_blocked = true; 607 } 608 } 609 610 status = rsi_band_check(common, curchan); 611 if (!status) 612 status = rsi_set_channel(adapter->priv, curchan); 613 614 if (assoc) { 615 if (common->hw_data_qs_blocked && 616 (rsi_get_connected_channel(vif) == channel)) { 617 rsi_dbg(INFO_ZONE, "unblk data q %d\n", channel); 618 if (!rsi_send_block_unblock_frame(common, false)) 619 common->hw_data_qs_blocked = false; 620 } 621 } 622 623 return status; 624 } 625 626 /** 627 * rsi_config_power() - This function configures tx power to device 628 * @hw: Pointer to the ieee80211_hw structure. 629 * 630 * Return: 0 on success, negative error code on failure. 631 */ 632 static int rsi_config_power(struct ieee80211_hw *hw) 633 { 634 struct rsi_hw *adapter = hw->priv; 635 struct rsi_common *common = adapter->priv; 636 struct ieee80211_conf *conf = &hw->conf; 637 638 if (adapter->sc_nvifs <= 0) { 639 rsi_dbg(ERR_ZONE, "%s: No virtual interface found\n", __func__); 640 return -EINVAL; 641 } 642 643 rsi_dbg(INFO_ZONE, 644 "%s: Set tx power: %d dBM\n", __func__, conf->power_level); 645 646 if (conf->power_level == common->tx_power) 647 return 0; 648 649 common->tx_power = conf->power_level; 650 651 return rsi_send_radio_params_update(common); 652 } 653 654 /** 655 * rsi_mac80211_config() - This function is a handler for configuration 656 * requests. The stack calls this function to 657 * change hardware configuration, e.g., channel. 658 * @hw: Pointer to the ieee80211_hw structure. 659 * @radio_idx: Radio index. 660 * @changed: Changed flags set. 661 * 662 * Return: 0 on success, negative error code on failure. 663 */ 664 static int rsi_mac80211_config(struct ieee80211_hw *hw, 665 int radio_idx, 666 u32 changed) 667 { 668 struct rsi_hw *adapter = hw->priv; 669 struct rsi_common *common = adapter->priv; 670 struct ieee80211_conf *conf = &hw->conf; 671 int status = -EOPNOTSUPP; 672 673 mutex_lock(&common->mutex); 674 675 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) 676 status = rsi_channel_change(hw); 677 678 /* tx power */ 679 if (changed & IEEE80211_CONF_CHANGE_POWER) { 680 rsi_dbg(INFO_ZONE, "%s: Configuring Power\n", __func__); 681 status = rsi_config_power(hw); 682 } 683 684 /* Power save parameters */ 685 if ((changed & IEEE80211_CONF_CHANGE_PS) && 686 !common->mac_ops_resumed) { 687 struct ieee80211_vif *vif, *sta_vif = NULL; 688 unsigned long flags; 689 int i, set_ps = 1; 690 691 for (i = 0; i < RSI_MAX_VIFS; i++) { 692 vif = adapter->vifs[i]; 693 if (!vif) 694 continue; 695 /* Don't go to power save if AP vap exists */ 696 if ((vif->type == NL80211_IFTYPE_AP) || 697 (vif->type == NL80211_IFTYPE_P2P_GO)) { 698 set_ps = 0; 699 break; 700 } 701 if ((vif->type == NL80211_IFTYPE_STATION || 702 vif->type == NL80211_IFTYPE_P2P_CLIENT) && 703 (!sta_vif || vif->cfg.assoc)) 704 sta_vif = vif; 705 } 706 if (set_ps && sta_vif) { 707 spin_lock_irqsave(&adapter->ps_lock, flags); 708 if (conf->flags & IEEE80211_CONF_PS) 709 rsi_enable_ps(adapter, sta_vif); 710 else 711 rsi_disable_ps(adapter, sta_vif); 712 spin_unlock_irqrestore(&adapter->ps_lock, flags); 713 } 714 } 715 716 /* RTS threshold */ 717 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 718 rsi_dbg(INFO_ZONE, "RTS threshold\n"); 719 if ((common->rts_threshold) <= IEEE80211_MAX_RTS_THRESHOLD) { 720 rsi_dbg(INFO_ZONE, 721 "%s: Sending vap updates....\n", __func__); 722 status = rsi_send_vap_dynamic_update(common); 723 } 724 } 725 mutex_unlock(&common->mutex); 726 727 return status; 728 } 729 730 /** 731 * rsi_get_connected_channel() - This function is used to get the current 732 * connected channel number. 733 * @vif: Pointer to the ieee80211_vif structure. 734 * 735 * Return: Current connected AP's channel number is returned. 736 */ 737 u16 rsi_get_connected_channel(struct ieee80211_vif *vif) 738 { 739 struct ieee80211_bss_conf *bss; 740 struct ieee80211_channel *channel; 741 742 if (!vif) 743 return 0; 744 745 bss = &vif->bss_conf; 746 channel = bss->chanreq.oper.chan; 747 748 if (!channel) 749 return 0; 750 751 return channel->hw_value; 752 } 753 754 static void rsi_switch_channel(struct rsi_hw *adapter, 755 struct ieee80211_vif *vif) 756 { 757 struct rsi_common *common = adapter->priv; 758 struct ieee80211_channel *channel; 759 760 if (common->iface_down) 761 return; 762 if (!vif) 763 return; 764 765 channel = vif->bss_conf.chanreq.oper.chan; 766 767 if (!channel) 768 return; 769 770 rsi_band_check(common, channel); 771 rsi_set_channel(common, channel); 772 rsi_dbg(INFO_ZONE, "Switched to channel - %d\n", channel->hw_value); 773 } 774 775 /** 776 * rsi_mac80211_bss_info_changed() - This function is a handler for config 777 * requests related to BSS parameters that 778 * may vary during BSS's lifespan. 779 * @hw: Pointer to the ieee80211_hw structure. 780 * @vif: Pointer to the ieee80211_vif structure. 781 * @bss_conf: Pointer to the ieee80211_bss_conf structure. 782 * @changed: Changed flags set. 783 * 784 * Return: None. 785 */ 786 static void rsi_mac80211_bss_info_changed(struct ieee80211_hw *hw, 787 struct ieee80211_vif *vif, 788 struct ieee80211_bss_conf *bss_conf, 789 u64 changed) 790 { 791 struct rsi_hw *adapter = hw->priv; 792 struct rsi_common *common = adapter->priv; 793 struct ieee80211_bss_conf *bss = &vif->bss_conf; 794 struct ieee80211_conf *conf = &hw->conf; 795 u16 rx_filter_word = 0; 796 797 mutex_lock(&common->mutex); 798 if (changed & BSS_CHANGED_ASSOC) { 799 rsi_dbg(INFO_ZONE, "%s: Changed Association status: %d\n", 800 __func__, vif->cfg.assoc); 801 if (vif->cfg.assoc) { 802 /* Send the RX filter frame */ 803 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | 804 ALLOW_CTRL_ASSOC_PEER | 805 ALLOW_MGMT_ASSOC_PEER); 806 rsi_send_rx_filter_frame(common, rx_filter_word); 807 } 808 rsi_inform_bss_status(common, 809 RSI_OPMODE_STA, 810 vif->cfg.assoc, 811 bss_conf->bssid, 812 bss_conf->qos, 813 vif->cfg.aid, 814 NULL, 0, 815 bss_conf->assoc_capability, vif); 816 adapter->ps_info.dtim_interval_duration = bss->dtim_period; 817 adapter->ps_info.listen_interval = conf->listen_interval; 818 819 /* If U-APSD is updated, send ps parameters to firmware */ 820 if (vif->cfg.assoc) { 821 if (common->uapsd_bitmap) { 822 rsi_dbg(INFO_ZONE, "Configuring UAPSD\n"); 823 rsi_conf_uapsd(adapter, vif); 824 } 825 } else { 826 common->uapsd_bitmap = 0; 827 } 828 } 829 830 if (changed & BSS_CHANGED_CQM) { 831 common->cqm_info.last_cqm_event_rssi = 0; 832 common->cqm_info.rssi_thold = bss_conf->cqm_rssi_thold; 833 common->cqm_info.rssi_hyst = bss_conf->cqm_rssi_hyst; 834 rsi_dbg(INFO_ZONE, "RSSI threshold & hysteresis are: %d %d\n", 835 common->cqm_info.rssi_thold, 836 common->cqm_info.rssi_hyst); 837 } 838 839 if (changed & BSS_CHANGED_BEACON_INT) { 840 rsi_dbg(INFO_ZONE, "%s: Changed Beacon interval: %d\n", 841 __func__, bss_conf->beacon_int); 842 if (common->beacon_interval != bss->beacon_int) { 843 common->beacon_interval = bss->beacon_int; 844 if (vif->type == NL80211_IFTYPE_AP) { 845 struct vif_priv *vif_info = (struct vif_priv *)vif->drv_priv; 846 847 rsi_set_vap_capabilities(common, RSI_OPMODE_AP, 848 vif->addr, vif_info->vap_id, 849 VAP_UPDATE); 850 } 851 } 852 adapter->ps_info.listen_interval = 853 bss->beacon_int * adapter->ps_info.num_bcns_per_lis_int; 854 } 855 856 if ((changed & BSS_CHANGED_BEACON_ENABLED) && 857 ((vif->type == NL80211_IFTYPE_AP) || 858 (vif->type == NL80211_IFTYPE_P2P_GO))) { 859 if (bss->enable_beacon) { 860 rsi_dbg(INFO_ZONE, "===> BEACON ENABLED <===\n"); 861 common->beacon_enabled = 1; 862 } else { 863 rsi_dbg(INFO_ZONE, "===> BEACON DISABLED <===\n"); 864 common->beacon_enabled = 0; 865 } 866 } 867 868 mutex_unlock(&common->mutex); 869 } 870 871 /** 872 * rsi_mac80211_conf_filter() - This function configure the device's RX filter. 873 * @hw: Pointer to the ieee80211_hw structure. 874 * @changed_flags: Changed flags set. 875 * @total_flags: Total initial flags set. 876 * @multicast: Multicast. 877 * 878 * Return: None. 879 */ 880 static void rsi_mac80211_conf_filter(struct ieee80211_hw *hw, 881 u32 changed_flags, 882 u32 *total_flags, 883 u64 multicast) 884 { 885 /* Not doing much here as of now */ 886 *total_flags &= RSI_SUPP_FILTERS; 887 } 888 889 /** 890 * rsi_mac80211_conf_tx() - This function configures TX queue parameters 891 * (EDCF (aifs, cw_min, cw_max), bursting) 892 * for a hardware TX queue. 893 * @hw: Pointer to the ieee80211_hw structure 894 * @vif: Pointer to the ieee80211_vif structure. 895 * @link_id: the link ID if MLO is used, otherwise 0 896 * @queue: Queue number. 897 * @params: Pointer to ieee80211_tx_queue_params structure. 898 * 899 * Return: 0 on success, negative error code on failure. 900 */ 901 static int rsi_mac80211_conf_tx(struct ieee80211_hw *hw, 902 struct ieee80211_vif *vif, 903 unsigned int link_id, u16 queue, 904 const struct ieee80211_tx_queue_params *params) 905 { 906 struct rsi_hw *adapter = hw->priv; 907 struct rsi_common *common = adapter->priv; 908 u8 idx = 0; 909 910 if (queue >= IEEE80211_NUM_ACS) 911 return 0; 912 913 rsi_dbg(INFO_ZONE, 914 "%s: Conf queue %d, aifs: %d, cwmin: %d cwmax: %d, txop: %d\n", 915 __func__, queue, params->aifs, 916 params->cw_min, params->cw_max, params->txop); 917 918 mutex_lock(&common->mutex); 919 /* Map into the way the f/w expects */ 920 switch (queue) { 921 case IEEE80211_AC_VO: 922 idx = VO_Q; 923 break; 924 case IEEE80211_AC_VI: 925 idx = VI_Q; 926 break; 927 case IEEE80211_AC_BE: 928 idx = BE_Q; 929 break; 930 case IEEE80211_AC_BK: 931 idx = BK_Q; 932 break; 933 default: 934 idx = BE_Q; 935 break; 936 } 937 938 memcpy(&common->edca_params[idx], 939 params, 940 sizeof(struct ieee80211_tx_queue_params)); 941 942 if (params->uapsd) 943 common->uapsd_bitmap |= idx; 944 else 945 common->uapsd_bitmap &= (~idx); 946 947 mutex_unlock(&common->mutex); 948 949 return 0; 950 } 951 952 /** 953 * rsi_hal_key_config() - This function loads the keys into the firmware. 954 * @hw: Pointer to the ieee80211_hw structure. 955 * @vif: Pointer to the ieee80211_vif structure. 956 * @key: Pointer to the ieee80211_key_conf structure. 957 * @sta: Pointer to the ieee80211_sta structure. 958 * 959 * Return: status: 0 on success, negative error codes on failure. 960 */ 961 static int rsi_hal_key_config(struct ieee80211_hw *hw, 962 struct ieee80211_vif *vif, 963 struct ieee80211_key_conf *key, 964 struct ieee80211_sta *sta) 965 { 966 struct rsi_hw *adapter = hw->priv; 967 struct rsi_sta *rsta = NULL; 968 int status; 969 u8 key_type; 970 s16 sta_id = 0; 971 972 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 973 key_type = RSI_PAIRWISE_KEY; 974 else 975 key_type = RSI_GROUP_KEY; 976 977 rsi_dbg(ERR_ZONE, "%s: Cipher 0x%x key_type: %d key_len: %d\n", 978 __func__, key->cipher, key_type, key->keylen); 979 980 if ((vif->type == NL80211_IFTYPE_AP) || 981 (vif->type == NL80211_IFTYPE_P2P_GO)) { 982 if (sta) { 983 rsta = rsi_find_sta(adapter->priv, sta->addr); 984 if (rsta) 985 sta_id = rsta->sta_id; 986 } 987 adapter->priv->key = key; 988 } else { 989 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) || 990 (key->cipher == WLAN_CIPHER_SUITE_WEP40)) { 991 status = rsi_hal_load_key(adapter->priv, 992 key->key, 993 key->keylen, 994 RSI_PAIRWISE_KEY, 995 key->keyidx, 996 key->cipher, 997 sta_id, 998 vif); 999 if (status) 1000 return status; 1001 } 1002 } 1003 1004 status = rsi_hal_load_key(adapter->priv, 1005 key->key, 1006 key->keylen, 1007 key_type, 1008 key->keyidx, 1009 key->cipher, 1010 sta_id, 1011 vif); 1012 if (status) 1013 return status; 1014 1015 if (vif->type == NL80211_IFTYPE_STATION && 1016 (key->cipher == WLAN_CIPHER_SUITE_WEP104 || 1017 key->cipher == WLAN_CIPHER_SUITE_WEP40)) { 1018 if (!rsi_send_block_unblock_frame(adapter->priv, false)) 1019 adapter->priv->hw_data_qs_blocked = false; 1020 } 1021 1022 return 0; 1023 } 1024 1025 /** 1026 * rsi_mac80211_set_key() - This function sets type of key to be loaded. 1027 * @hw: Pointer to the ieee80211_hw structure. 1028 * @cmd: enum set_key_cmd. 1029 * @vif: Pointer to the ieee80211_vif structure. 1030 * @sta: Pointer to the ieee80211_sta structure. 1031 * @key: Pointer to the ieee80211_key_conf structure. 1032 * 1033 * Return: status: 0 on success, negative error code on failure. 1034 */ 1035 static int rsi_mac80211_set_key(struct ieee80211_hw *hw, 1036 enum set_key_cmd cmd, 1037 struct ieee80211_vif *vif, 1038 struct ieee80211_sta *sta, 1039 struct ieee80211_key_conf *key) 1040 { 1041 struct rsi_hw *adapter = hw->priv; 1042 struct rsi_common *common = adapter->priv; 1043 struct security_info *secinfo = &common->secinfo; 1044 int status; 1045 1046 mutex_lock(&common->mutex); 1047 switch (cmd) { 1048 case SET_KEY: 1049 status = rsi_hal_key_config(hw, vif, key, sta); 1050 if (status) { 1051 mutex_unlock(&common->mutex); 1052 return status; 1053 } 1054 1055 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 1056 secinfo->ptk_cipher = key->cipher; 1057 else 1058 secinfo->gtk_cipher = key->cipher; 1059 1060 key->hw_key_idx = key->keyidx; 1061 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 1062 1063 rsi_dbg(ERR_ZONE, "%s: RSI set_key\n", __func__); 1064 break; 1065 1066 case DISABLE_KEY: 1067 rsi_dbg(ERR_ZONE, "%s: RSI del key\n", __func__); 1068 memset(key, 0, sizeof(struct ieee80211_key_conf)); 1069 status = rsi_hal_key_config(hw, vif, key, sta); 1070 break; 1071 1072 default: 1073 status = -EOPNOTSUPP; 1074 break; 1075 } 1076 1077 mutex_unlock(&common->mutex); 1078 return status; 1079 } 1080 1081 /** 1082 * rsi_mac80211_ampdu_action() - This function selects the AMPDU action for 1083 * the corresponding mlme_action flag and 1084 * informs the f/w regarding this. 1085 * @hw: Pointer to the ieee80211_hw structure. 1086 * @vif: Pointer to the ieee80211_vif structure. 1087 * @params: Pointer to A-MPDU action parameters 1088 * 1089 * Return: status: 0 on success, negative error code on failure. 1090 */ 1091 static int rsi_mac80211_ampdu_action(struct ieee80211_hw *hw, 1092 struct ieee80211_vif *vif, 1093 struct ieee80211_ampdu_params *params) 1094 { 1095 int status = -EOPNOTSUPP; 1096 struct rsi_hw *adapter = hw->priv; 1097 struct rsi_common *common = adapter->priv; 1098 struct rsi_sta *rsta = NULL; 1099 u16 seq_no = 0, seq_start = 0; 1100 u8 ii = 0; 1101 struct ieee80211_sta *sta = params->sta; 1102 u8 sta_id = 0; 1103 enum ieee80211_ampdu_mlme_action action = params->action; 1104 u16 tid = params->tid; 1105 u16 *ssn = ¶ms->ssn; 1106 u8 buf_size = params->buf_size; 1107 1108 for (ii = 0; ii < RSI_MAX_VIFS; ii++) { 1109 if (vif == adapter->vifs[ii]) 1110 break; 1111 } 1112 1113 if (ii >= RSI_MAX_VIFS) 1114 return status; 1115 1116 mutex_lock(&common->mutex); 1117 1118 if (ssn != NULL) 1119 seq_no = *ssn; 1120 1121 if ((vif->type == NL80211_IFTYPE_AP) || 1122 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1123 rsta = rsi_find_sta(common, sta->addr); 1124 if (!rsta) { 1125 rsi_dbg(ERR_ZONE, "No station mapped\n"); 1126 status = 0; 1127 goto unlock; 1128 } 1129 sta_id = rsta->sta_id; 1130 } 1131 1132 rsi_dbg(INFO_ZONE, 1133 "%s: AMPDU action tid=%d ssn=0x%x, buf_size=%d sta_id=%d\n", 1134 __func__, tid, seq_no, buf_size, sta_id); 1135 1136 switch (action) { 1137 case IEEE80211_AMPDU_RX_START: 1138 status = rsi_send_aggregation_params_frame(common, 1139 tid, 1140 seq_no, 1141 buf_size, 1142 STA_RX_ADDBA_DONE, 1143 sta_id); 1144 break; 1145 1146 case IEEE80211_AMPDU_RX_STOP: 1147 status = rsi_send_aggregation_params_frame(common, 1148 tid, 1149 0, 1150 buf_size, 1151 STA_RX_DELBA, 1152 sta_id); 1153 break; 1154 1155 case IEEE80211_AMPDU_TX_START: 1156 if ((vif->type == NL80211_IFTYPE_STATION) || 1157 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) 1158 common->vif_info[ii].seq_start = seq_no; 1159 else if ((vif->type == NL80211_IFTYPE_AP) || 1160 (vif->type == NL80211_IFTYPE_P2P_GO)) 1161 rsta->seq_start[tid] = seq_no; 1162 status = IEEE80211_AMPDU_TX_START_IMMEDIATE; 1163 break; 1164 1165 case IEEE80211_AMPDU_TX_STOP_CONT: 1166 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1167 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1168 status = rsi_send_aggregation_params_frame(common, 1169 tid, 1170 seq_no, 1171 buf_size, 1172 STA_TX_DELBA, 1173 sta_id); 1174 if (!status) 1175 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1176 break; 1177 1178 case IEEE80211_AMPDU_TX_OPERATIONAL: 1179 if ((vif->type == NL80211_IFTYPE_STATION) || 1180 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) 1181 seq_start = common->vif_info[ii].seq_start; 1182 else if ((vif->type == NL80211_IFTYPE_AP) || 1183 (vif->type == NL80211_IFTYPE_P2P_GO)) 1184 seq_start = rsta->seq_start[tid]; 1185 status = rsi_send_aggregation_params_frame(common, 1186 tid, 1187 seq_start, 1188 buf_size, 1189 STA_TX_ADDBA_DONE, 1190 sta_id); 1191 break; 1192 1193 default: 1194 rsi_dbg(ERR_ZONE, "%s: Unknown AMPDU action\n", __func__); 1195 break; 1196 } 1197 1198 unlock: 1199 mutex_unlock(&common->mutex); 1200 return status; 1201 } 1202 1203 /** 1204 * rsi_mac80211_set_rts_threshold() - This function sets rts threshold value. 1205 * @hw: Pointer to the ieee80211_hw structure. 1206 * @radio_idx: Radio index. 1207 * @value: Rts threshold value. 1208 * 1209 * Return: 0 on success. 1210 */ 1211 static int rsi_mac80211_set_rts_threshold(struct ieee80211_hw *hw, 1212 int radio_idx, u32 value) 1213 { 1214 struct rsi_hw *adapter = hw->priv; 1215 struct rsi_common *common = adapter->priv; 1216 1217 mutex_lock(&common->mutex); 1218 common->rts_threshold = value; 1219 mutex_unlock(&common->mutex); 1220 1221 return 0; 1222 } 1223 1224 /** 1225 * rsi_mac80211_set_rate_mask() - This function sets bitrate_mask to be used. 1226 * @hw: Pointer to the ieee80211_hw structure 1227 * @vif: Pointer to the ieee80211_vif structure. 1228 * @mask: Pointer to the cfg80211_bitrate_mask structure. 1229 * 1230 * Return: 0 on success. 1231 */ 1232 static int rsi_mac80211_set_rate_mask(struct ieee80211_hw *hw, 1233 struct ieee80211_vif *vif, 1234 const struct cfg80211_bitrate_mask *mask) 1235 { 1236 const unsigned int mcs_offset = ARRAY_SIZE(rsi_rates); 1237 struct rsi_hw *adapter = hw->priv; 1238 struct rsi_common *common = adapter->priv; 1239 int i; 1240 1241 mutex_lock(&common->mutex); 1242 1243 for (i = 0; i < ARRAY_SIZE(common->rate_config); i++) { 1244 struct rsi_rate_config *cfg = &common->rate_config[i]; 1245 u32 bm; 1246 1247 bm = mask->control[i].legacy | (mask->control[i].ht_mcs[0] << mcs_offset); 1248 if (hweight32(bm) == 1) { /* single rate */ 1249 int rate_index = ffs(bm) - 1; 1250 1251 if (rate_index < mcs_offset) 1252 cfg->fixed_hw_rate = rsi_rates[rate_index].hw_value; 1253 else 1254 cfg->fixed_hw_rate = rsi_mcsrates[rate_index - mcs_offset]; 1255 cfg->fixed_enabled = true; 1256 } else { 1257 cfg->configured_mask = bm; 1258 cfg->fixed_enabled = false; 1259 } 1260 } 1261 1262 mutex_unlock(&common->mutex); 1263 1264 return 0; 1265 } 1266 1267 /** 1268 * rsi_perform_cqm() - This function performs cqm. 1269 * @common: Pointer to the driver private structure. 1270 * @bssid: pointer to the bssid. 1271 * @rssi: RSSI value. 1272 * @vif: Pointer to the ieee80211_vif structure. 1273 */ 1274 static void rsi_perform_cqm(struct rsi_common *common, 1275 u8 *bssid, 1276 s8 rssi, 1277 struct ieee80211_vif *vif) 1278 { 1279 s8 last_event = common->cqm_info.last_cqm_event_rssi; 1280 int thold = common->cqm_info.rssi_thold; 1281 u32 hyst = common->cqm_info.rssi_hyst; 1282 enum nl80211_cqm_rssi_threshold_event event; 1283 1284 if (rssi < thold && (last_event == 0 || rssi < (last_event - hyst))) 1285 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW; 1286 else if (rssi > thold && 1287 (last_event == 0 || rssi > (last_event + hyst))) 1288 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; 1289 else 1290 return; 1291 1292 common->cqm_info.last_cqm_event_rssi = rssi; 1293 rsi_dbg(INFO_ZONE, "CQM: Notifying event: %d\n", event); 1294 ieee80211_cqm_rssi_notify(vif, event, rssi, GFP_KERNEL); 1295 1296 return; 1297 } 1298 1299 /** 1300 * rsi_fill_rx_status() - This function fills rx status in 1301 * ieee80211_rx_status structure. 1302 * @hw: Pointer to the ieee80211_hw structure. 1303 * @skb: Pointer to the socket buffer structure. 1304 * @common: Pointer to the driver private structure. 1305 * @rxs: Pointer to the ieee80211_rx_status structure. 1306 * 1307 * Return: None. 1308 */ 1309 static void rsi_fill_rx_status(struct ieee80211_hw *hw, 1310 struct sk_buff *skb, 1311 struct rsi_common *common, 1312 struct ieee80211_rx_status *rxs) 1313 { 1314 struct rsi_hw *adapter = common->priv; 1315 struct ieee80211_vif *vif; 1316 struct ieee80211_bss_conf *bss = NULL; 1317 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 1318 struct skb_info *rx_params = (struct skb_info *)info->driver_data; 1319 struct ieee80211_hdr *hdr; 1320 char rssi = rx_params->rssi; 1321 u8 hdrlen = 0; 1322 u8 channel = rx_params->channel; 1323 s32 freq; 1324 int i; 1325 1326 hdr = ((struct ieee80211_hdr *)(skb->data)); 1327 hdrlen = ieee80211_hdrlen(hdr->frame_control); 1328 1329 memset(info, 0, sizeof(struct ieee80211_tx_info)); 1330 1331 rxs->signal = -(rssi); 1332 1333 rxs->band = common->band; 1334 1335 freq = ieee80211_channel_to_frequency(channel, rxs->band); 1336 1337 if (freq) 1338 rxs->freq = freq; 1339 1340 if (ieee80211_has_protected(hdr->frame_control)) { 1341 if (rsi_is_cipher_wep(common)) { 1342 memmove(skb->data + 4, skb->data, hdrlen); 1343 skb_pull(skb, 4); 1344 } else { 1345 memmove(skb->data + 8, skb->data, hdrlen); 1346 skb_pull(skb, 8); 1347 rxs->flag |= RX_FLAG_MMIC_STRIPPED; 1348 } 1349 rxs->flag |= RX_FLAG_DECRYPTED; 1350 rxs->flag |= RX_FLAG_IV_STRIPPED; 1351 } 1352 1353 for (i = 0; i < RSI_MAX_VIFS; i++) { 1354 vif = adapter->vifs[i]; 1355 if (!vif) 1356 continue; 1357 if (vif->type == NL80211_IFTYPE_STATION) { 1358 bss = &vif->bss_conf; 1359 break; 1360 } 1361 } 1362 if (!bss) 1363 return; 1364 /* CQM only for connected AP beacons, the RSSI is a weighted avg */ 1365 if (vif->cfg.assoc && !(memcmp(bss->bssid, hdr->addr2, ETH_ALEN))) { 1366 if (ieee80211_is_beacon(hdr->frame_control)) 1367 rsi_perform_cqm(common, hdr->addr2, rxs->signal, vif); 1368 } 1369 1370 return; 1371 } 1372 1373 /** 1374 * rsi_indicate_pkt_to_os() - This function sends received packet to mac80211. 1375 * @common: Pointer to the driver private structure. 1376 * @skb: Pointer to the socket buffer structure. 1377 * 1378 * Return: None. 1379 */ 1380 void rsi_indicate_pkt_to_os(struct rsi_common *common, 1381 struct sk_buff *skb) 1382 { 1383 struct rsi_hw *adapter = common->priv; 1384 struct ieee80211_hw *hw = adapter->hw; 1385 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); 1386 1387 if ((common->iface_down) || (!adapter->sc_nvifs)) { 1388 dev_kfree_skb(skb); 1389 return; 1390 } 1391 1392 /* filling in the ieee80211_rx_status flags */ 1393 rsi_fill_rx_status(hw, skb, common, rx_status); 1394 1395 ieee80211_rx_irqsafe(hw, skb); 1396 } 1397 1398 /** 1399 * rsi_mac80211_sta_add() - This function notifies driver about a peer getting 1400 * connected. 1401 * @hw: pointer to the ieee80211_hw structure. 1402 * @vif: Pointer to the ieee80211_vif structure. 1403 * @sta: Pointer to the ieee80211_sta structure. 1404 * 1405 * Return: 0 on success, negative error codes on failure. 1406 */ 1407 static int rsi_mac80211_sta_add(struct ieee80211_hw *hw, 1408 struct ieee80211_vif *vif, 1409 struct ieee80211_sta *sta) 1410 { 1411 struct rsi_hw *adapter = hw->priv; 1412 struct rsi_common *common = adapter->priv; 1413 bool sta_exist = false; 1414 struct rsi_sta *rsta; 1415 int status = 0; 1416 1417 rsi_dbg(INFO_ZONE, "Station Add: %pM\n", sta->addr); 1418 1419 mutex_lock(&common->mutex); 1420 1421 if ((vif->type == NL80211_IFTYPE_AP) || 1422 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1423 u8 cnt; 1424 int sta_idx = -1; 1425 int free_index = -1; 1426 1427 /* Check if max stations reached */ 1428 if (common->num_stations >= common->max_stations) { 1429 rsi_dbg(ERR_ZONE, "Reject: Max Stations exists\n"); 1430 status = -EOPNOTSUPP; 1431 goto unlock; 1432 } 1433 for (cnt = 0; cnt < common->max_stations; cnt++) { 1434 rsta = &common->stations[cnt]; 1435 1436 if (!rsta->sta) { 1437 if (free_index < 0) 1438 free_index = cnt; 1439 continue; 1440 } 1441 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) { 1442 rsi_dbg(INFO_ZONE, "Station exists\n"); 1443 sta_idx = cnt; 1444 sta_exist = true; 1445 break; 1446 } 1447 } 1448 if (!sta_exist) { 1449 if (free_index >= 0) 1450 sta_idx = free_index; 1451 } 1452 if (sta_idx < 0) { 1453 rsi_dbg(ERR_ZONE, 1454 "%s: Some problem reaching here...\n", 1455 __func__); 1456 status = -EINVAL; 1457 goto unlock; 1458 } 1459 rsta = &common->stations[sta_idx]; 1460 rsta->sta = sta; 1461 rsta->sta_id = sta_idx; 1462 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++) 1463 rsta->start_tx_aggr[cnt] = false; 1464 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++) 1465 rsta->seq_start[cnt] = 0; 1466 if (!sta_exist) { 1467 rsi_dbg(INFO_ZONE, "New Station\n"); 1468 1469 /* Send peer notify to device */ 1470 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n"); 1471 rsi_inform_bss_status(common, RSI_OPMODE_AP, 1, 1472 sta->addr, sta->wme, sta->aid, 1473 sta, sta_idx, 0, vif); 1474 1475 if (common->key) { 1476 struct ieee80211_key_conf *key = common->key; 1477 1478 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) || 1479 (key->cipher == WLAN_CIPHER_SUITE_WEP40)) 1480 rsi_hal_load_key(adapter->priv, 1481 key->key, 1482 key->keylen, 1483 RSI_PAIRWISE_KEY, 1484 key->keyidx, 1485 key->cipher, 1486 sta_idx, 1487 vif); 1488 } 1489 1490 common->num_stations++; 1491 } 1492 } 1493 1494 if ((vif->type == NL80211_IFTYPE_STATION) || 1495 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) { 1496 common->bitrate_mask[common->band] = sta->deflink.supp_rates[common->band]; 1497 common->vif_info[0].is_ht = sta->deflink.ht_cap.ht_supported; 1498 if (sta->deflink.ht_cap.ht_supported) { 1499 common->bitrate_mask[NL80211_BAND_2GHZ] = 1500 sta->deflink.supp_rates[NL80211_BAND_2GHZ]; 1501 if ((sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_20) || 1502 (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_40)) 1503 common->vif_info[0].sgi = true; 1504 ieee80211_start_tx_ba_session(sta, 0, 0); 1505 } 1506 } 1507 1508 unlock: 1509 mutex_unlock(&common->mutex); 1510 1511 return status; 1512 } 1513 1514 /** 1515 * rsi_mac80211_sta_remove() - This function notifies driver about a peer 1516 * getting disconnected. 1517 * @hw: Pointer to the ieee80211_hw structure. 1518 * @vif: Pointer to the ieee80211_vif structure. 1519 * @sta: Pointer to the ieee80211_sta structure. 1520 * 1521 * Return: 0 on success, negative error codes on failure. 1522 */ 1523 static int rsi_mac80211_sta_remove(struct ieee80211_hw *hw, 1524 struct ieee80211_vif *vif, 1525 struct ieee80211_sta *sta) 1526 { 1527 struct rsi_hw *adapter = hw->priv; 1528 struct rsi_common *common = adapter->priv; 1529 struct ieee80211_bss_conf *bss = &vif->bss_conf; 1530 struct rsi_sta *rsta; 1531 1532 rsi_dbg(INFO_ZONE, "Station Remove: %pM\n", sta->addr); 1533 1534 mutex_lock(&common->mutex); 1535 1536 if ((vif->type == NL80211_IFTYPE_AP) || 1537 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1538 u8 sta_idx, cnt; 1539 1540 /* Send peer notify to device */ 1541 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n"); 1542 for (sta_idx = 0; sta_idx < common->max_stations; sta_idx++) { 1543 rsta = &common->stations[sta_idx]; 1544 1545 if (!rsta->sta) 1546 continue; 1547 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) { 1548 rsi_inform_bss_status(common, RSI_OPMODE_AP, 0, 1549 sta->addr, sta->wme, 1550 sta->aid, sta, sta_idx, 1551 0, vif); 1552 rsta->sta = NULL; 1553 rsta->sta_id = -1; 1554 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++) 1555 rsta->start_tx_aggr[cnt] = false; 1556 if (common->num_stations > 0) 1557 common->num_stations--; 1558 break; 1559 } 1560 } 1561 if (sta_idx >= common->max_stations) 1562 rsi_dbg(ERR_ZONE, "%s: No station found\n", __func__); 1563 } 1564 1565 if ((vif->type == NL80211_IFTYPE_STATION) || 1566 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) { 1567 /* Resetting all the fields to default values */ 1568 memcpy((u8 *)bss->bssid, (u8 *)sta->addr, ETH_ALEN); 1569 bss->qos = sta->wme; 1570 common->bitrate_mask[NL80211_BAND_2GHZ] = 0; 1571 common->bitrate_mask[NL80211_BAND_5GHZ] = 0; 1572 common->vif_info[0].is_ht = false; 1573 common->vif_info[0].sgi = false; 1574 common->vif_info[0].seq_start = 0; 1575 common->secinfo.ptk_cipher = 0; 1576 common->secinfo.gtk_cipher = 0; 1577 if (!common->iface_down) 1578 rsi_send_rx_filter_frame(common, 0); 1579 } 1580 mutex_unlock(&common->mutex); 1581 1582 return 0; 1583 } 1584 1585 /** 1586 * rsi_mac80211_set_antenna() - This function is used to configure 1587 * tx and rx antennas. 1588 * @hw: Pointer to the ieee80211_hw structure. 1589 * @radio_idx: Radio index 1590 * @tx_ant: Bitmap for tx antenna 1591 * @rx_ant: Bitmap for rx antenna 1592 * 1593 * Return: 0 on success, Negative error code on failure. 1594 */ 1595 static int rsi_mac80211_set_antenna(struct ieee80211_hw *hw, 1596 int radio_idx, 1597 u32 tx_ant, u32 rx_ant) 1598 { 1599 struct rsi_hw *adapter = hw->priv; 1600 struct rsi_common *common = adapter->priv; 1601 u8 antenna = 0; 1602 1603 if (tx_ant > 1 || rx_ant > 1) { 1604 rsi_dbg(ERR_ZONE, 1605 "Invalid antenna selection (tx: %d, rx:%d)\n", 1606 tx_ant, rx_ant); 1607 rsi_dbg(ERR_ZONE, 1608 "Use 0 for int_ant, 1 for ext_ant\n"); 1609 return -EINVAL; 1610 } 1611 1612 rsi_dbg(INFO_ZONE, "%s: Antenna map Tx %x Rx %d\n", 1613 __func__, tx_ant, rx_ant); 1614 1615 mutex_lock(&common->mutex); 1616 1617 antenna = tx_ant ? ANTENNA_SEL_UFL : ANTENNA_SEL_INT; 1618 if (common->ant_in_use != antenna) 1619 if (rsi_set_antenna(common, antenna)) 1620 goto fail_set_antenna; 1621 1622 rsi_dbg(INFO_ZONE, "(%s) Antenna path configured successfully\n", 1623 tx_ant ? "UFL" : "INT"); 1624 1625 common->ant_in_use = antenna; 1626 1627 mutex_unlock(&common->mutex); 1628 1629 return 0; 1630 1631 fail_set_antenna: 1632 rsi_dbg(ERR_ZONE, "%s: Failed.\n", __func__); 1633 mutex_unlock(&common->mutex); 1634 return -EINVAL; 1635 } 1636 1637 /** 1638 * rsi_mac80211_get_antenna() - This function is used to configure 1639 * tx and rx antennas. 1640 * 1641 * @hw: Pointer to the ieee80211_hw structure. 1642 * @radio_idx: Radio index 1643 * @tx_ant: Bitmap for tx antenna 1644 * @rx_ant: Bitmap for rx antenna 1645 * 1646 * Return: 0 on success, negative error codes on failure. 1647 */ 1648 static int rsi_mac80211_get_antenna(struct ieee80211_hw *hw, 1649 int radio_idx, 1650 u32 *tx_ant, u32 *rx_ant) 1651 { 1652 struct rsi_hw *adapter = hw->priv; 1653 struct rsi_common *common = adapter->priv; 1654 1655 mutex_lock(&common->mutex); 1656 1657 *tx_ant = (common->ant_in_use == ANTENNA_SEL_UFL) ? 1 : 0; 1658 *rx_ant = 0; 1659 1660 mutex_unlock(&common->mutex); 1661 1662 return 0; 1663 } 1664 1665 static int rsi_map_region_code(enum nl80211_dfs_regions region_code) 1666 { 1667 switch (region_code) { 1668 case NL80211_DFS_FCC: 1669 return RSI_REGION_FCC; 1670 case NL80211_DFS_ETSI: 1671 return RSI_REGION_ETSI; 1672 case NL80211_DFS_JP: 1673 return RSI_REGION_TELEC; 1674 case NL80211_DFS_UNSET: 1675 return RSI_REGION_WORLD; 1676 } 1677 return RSI_REGION_WORLD; 1678 } 1679 1680 static void rsi_reg_notify(struct wiphy *wiphy, 1681 struct regulatory_request *request) 1682 { 1683 struct ieee80211_supported_band *sband; 1684 struct ieee80211_channel *ch; 1685 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 1686 struct rsi_hw * adapter = hw->priv; 1687 struct rsi_common *common = adapter->priv; 1688 int i; 1689 1690 mutex_lock(&common->mutex); 1691 1692 rsi_dbg(INFO_ZONE, "country = %s dfs_region = %d\n", 1693 request->alpha2, request->dfs_region); 1694 1695 if (common->num_supp_bands > 1) { 1696 sband = wiphy->bands[NL80211_BAND_5GHZ]; 1697 1698 for (i = 0; i < sband->n_channels; i++) { 1699 ch = &sband->channels[i]; 1700 if (ch->flags & IEEE80211_CHAN_DISABLED) 1701 continue; 1702 1703 if (ch->flags & IEEE80211_CHAN_RADAR) 1704 ch->flags |= IEEE80211_CHAN_NO_IR; 1705 } 1706 } 1707 adapter->dfs_region = rsi_map_region_code(request->dfs_region); 1708 rsi_dbg(INFO_ZONE, "RSI region code = %d\n", adapter->dfs_region); 1709 1710 adapter->country[0] = request->alpha2[0]; 1711 adapter->country[1] = request->alpha2[1]; 1712 1713 mutex_unlock(&common->mutex); 1714 } 1715 1716 static void rsi_mac80211_rfkill_poll(struct ieee80211_hw *hw) 1717 { 1718 struct rsi_hw *adapter = hw->priv; 1719 struct rsi_common *common = adapter->priv; 1720 1721 mutex_lock(&common->mutex); 1722 if (common->fsm_state != FSM_MAC_INIT_DONE) 1723 wiphy_rfkill_set_hw_state(hw->wiphy, true); 1724 else 1725 wiphy_rfkill_set_hw_state(hw->wiphy, false); 1726 mutex_unlock(&common->mutex); 1727 } 1728 1729 static void rsi_resume_conn_channel(struct rsi_common *common) 1730 { 1731 struct rsi_hw *adapter = common->priv; 1732 struct ieee80211_vif *vif; 1733 int cnt; 1734 1735 for (cnt = 0; cnt < RSI_MAX_VIFS; cnt++) { 1736 vif = adapter->vifs[cnt]; 1737 if (!vif) 1738 continue; 1739 1740 if ((vif->type == NL80211_IFTYPE_AP) || 1741 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1742 rsi_switch_channel(adapter, vif); 1743 break; 1744 } 1745 if (((vif->type == NL80211_IFTYPE_STATION) || 1746 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) && 1747 vif->cfg.assoc) { 1748 rsi_switch_channel(adapter, vif); 1749 break; 1750 } 1751 } 1752 } 1753 1754 void rsi_roc_timeout(struct timer_list *t) 1755 { 1756 struct rsi_common *common = timer_container_of(common, t, roc_timer); 1757 1758 rsi_dbg(INFO_ZONE, "Remain on channel expired\n"); 1759 1760 mutex_lock(&common->mutex); 1761 ieee80211_remain_on_channel_expired(common->priv->hw); 1762 1763 if (timer_pending(&common->roc_timer)) 1764 timer_delete(&common->roc_timer); 1765 1766 rsi_resume_conn_channel(common); 1767 mutex_unlock(&common->mutex); 1768 } 1769 1770 static int rsi_mac80211_roc(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1771 struct ieee80211_channel *chan, int duration, 1772 enum ieee80211_roc_type type) 1773 { 1774 struct rsi_hw *adapter = hw->priv; 1775 struct rsi_common *common = adapter->priv; 1776 int status = 0; 1777 1778 rsi_dbg(INFO_ZONE, "***** Remain on channel *****\n"); 1779 1780 mutex_lock(&common->mutex); 1781 rsi_dbg(INFO_ZONE, "%s: channel: %d duration: %dms\n", 1782 __func__, chan->hw_value, duration); 1783 1784 if (timer_pending(&common->roc_timer)) { 1785 rsi_dbg(INFO_ZONE, "Stop on-going ROC\n"); 1786 timer_delete(&common->roc_timer); 1787 } 1788 common->roc_timer.expires = msecs_to_jiffies(duration) + jiffies; 1789 add_timer(&common->roc_timer); 1790 1791 /* Configure band */ 1792 if (rsi_band_check(common, chan)) { 1793 rsi_dbg(ERR_ZONE, "Failed to set band\n"); 1794 status = -EINVAL; 1795 goto out; 1796 } 1797 1798 /* Configure channel */ 1799 if (rsi_set_channel(common, chan)) { 1800 rsi_dbg(ERR_ZONE, "Failed to set the channel\n"); 1801 status = -EINVAL; 1802 goto out; 1803 } 1804 1805 common->roc_vif = vif; 1806 ieee80211_ready_on_channel(hw); 1807 rsi_dbg(INFO_ZONE, "%s: Ready on channel :%d\n", 1808 __func__, chan->hw_value); 1809 1810 out: 1811 mutex_unlock(&common->mutex); 1812 1813 return status; 1814 } 1815 1816 static int rsi_mac80211_cancel_roc(struct ieee80211_hw *hw, 1817 struct ieee80211_vif *vif) 1818 { 1819 struct rsi_hw *adapter = hw->priv; 1820 struct rsi_common *common = adapter->priv; 1821 1822 rsi_dbg(INFO_ZONE, "Cancel remain on channel\n"); 1823 1824 mutex_lock(&common->mutex); 1825 if (!timer_pending(&common->roc_timer)) { 1826 mutex_unlock(&common->mutex); 1827 return 0; 1828 } 1829 1830 timer_delete(&common->roc_timer); 1831 1832 rsi_resume_conn_channel(common); 1833 mutex_unlock(&common->mutex); 1834 1835 return 0; 1836 } 1837 1838 #ifdef CONFIG_PM 1839 static const struct wiphy_wowlan_support rsi_wowlan_support = { 1840 .flags = WIPHY_WOWLAN_ANY | 1841 WIPHY_WOWLAN_MAGIC_PKT | 1842 WIPHY_WOWLAN_DISCONNECT | 1843 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 1844 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 1845 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 1846 WIPHY_WOWLAN_4WAY_HANDSHAKE, 1847 }; 1848 1849 static u16 rsi_wow_map_triggers(struct rsi_common *common, 1850 struct cfg80211_wowlan *wowlan) 1851 { 1852 u16 wow_triggers = 0; 1853 1854 rsi_dbg(INFO_ZONE, "Mapping wowlan triggers\n"); 1855 1856 if (wowlan->any) 1857 wow_triggers |= RSI_WOW_ANY; 1858 if (wowlan->magic_pkt) 1859 wow_triggers |= RSI_WOW_MAGIC_PKT; 1860 if (wowlan->disconnect) 1861 wow_triggers |= RSI_WOW_DISCONNECT; 1862 if (wowlan->gtk_rekey_failure || wowlan->eap_identity_req || 1863 wowlan->four_way_handshake) 1864 wow_triggers |= RSI_WOW_GTK_REKEY; 1865 1866 return wow_triggers; 1867 } 1868 1869 int rsi_config_wowlan(struct rsi_hw *adapter, struct cfg80211_wowlan *wowlan) 1870 { 1871 struct rsi_common *common = adapter->priv; 1872 struct ieee80211_vif *vif = adapter->vifs[0]; 1873 u16 triggers = 0; 1874 u16 rx_filter_word = 0; 1875 1876 rsi_dbg(INFO_ZONE, "Config WoWLAN to device\n"); 1877 1878 if (!vif) 1879 return -EINVAL; 1880 1881 if (WARN_ON(!wowlan)) { 1882 rsi_dbg(ERR_ZONE, "WoW triggers not enabled\n"); 1883 return -EINVAL; 1884 } 1885 1886 common->wow_flags |= RSI_WOW_ENABLED; 1887 triggers = rsi_wow_map_triggers(common, wowlan); 1888 if (!triggers) { 1889 rsi_dbg(ERR_ZONE, "%s:No valid WoW triggers\n", __func__); 1890 return -EINVAL; 1891 } 1892 if (!vif->cfg.assoc) { 1893 rsi_dbg(ERR_ZONE, 1894 "Cannot configure WoWLAN (Station not connected)\n"); 1895 common->wow_flags |= RSI_WOW_NO_CONNECTION; 1896 return 0; 1897 } 1898 rsi_dbg(INFO_ZONE, "TRIGGERS %x\n", triggers); 1899 1900 if (common->coex_mode > 1) 1901 rsi_disable_ps(adapter, adapter->vifs[0]); 1902 1903 rsi_send_wowlan_request(common, triggers, 1); 1904 1905 /** 1906 * Increase the beacon_miss threshold & keep-alive timers in 1907 * vap_update frame 1908 */ 1909 rsi_send_vap_dynamic_update(common); 1910 1911 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | DISALLOW_BEACONS); 1912 rsi_send_rx_filter_frame(common, rx_filter_word); 1913 1914 return 0; 1915 } 1916 EXPORT_SYMBOL(rsi_config_wowlan); 1917 1918 static int rsi_mac80211_suspend(struct ieee80211_hw *hw, 1919 struct cfg80211_wowlan *wowlan) 1920 { 1921 struct rsi_hw *adapter = hw->priv; 1922 struct rsi_common *common = adapter->priv; 1923 1924 rsi_dbg(INFO_ZONE, "%s: mac80211 suspend\n", __func__); 1925 mutex_lock(&common->mutex); 1926 if (rsi_config_wowlan(adapter, wowlan)) { 1927 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n"); 1928 mutex_unlock(&common->mutex); 1929 return 1; 1930 } 1931 mutex_unlock(&common->mutex); 1932 1933 return 0; 1934 } 1935 1936 static int rsi_mac80211_resume(struct ieee80211_hw *hw) 1937 { 1938 u16 rx_filter_word = 0; 1939 struct rsi_hw *adapter = hw->priv; 1940 struct rsi_common *common = adapter->priv; 1941 1942 common->wow_flags = 0; 1943 1944 rsi_dbg(INFO_ZONE, "%s: mac80211 resume\n", __func__); 1945 1946 if (common->hibernate_resume) { 1947 common->mac_ops_resumed = true; 1948 /* Device need a complete restart of all MAC operations. 1949 * returning 1 will serve this purpose. 1950 */ 1951 return 1; 1952 } 1953 1954 mutex_lock(&common->mutex); 1955 rsi_send_wowlan_request(common, 0, 0); 1956 1957 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | ALLOW_CTRL_ASSOC_PEER | 1958 ALLOW_MGMT_ASSOC_PEER); 1959 rsi_send_rx_filter_frame(common, rx_filter_word); 1960 mutex_unlock(&common->mutex); 1961 1962 return 0; 1963 } 1964 1965 #endif 1966 1967 static const struct ieee80211_ops mac80211_ops = { 1968 .add_chanctx = ieee80211_emulate_add_chanctx, 1969 .remove_chanctx = ieee80211_emulate_remove_chanctx, 1970 .change_chanctx = ieee80211_emulate_change_chanctx, 1971 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, 1972 .tx = rsi_mac80211_tx, 1973 .wake_tx_queue = ieee80211_handle_wake_tx_queue, 1974 .start = rsi_mac80211_start, 1975 .stop = rsi_mac80211_stop, 1976 .add_interface = rsi_mac80211_add_interface, 1977 .remove_interface = rsi_mac80211_remove_interface, 1978 .config = rsi_mac80211_config, 1979 .bss_info_changed = rsi_mac80211_bss_info_changed, 1980 .conf_tx = rsi_mac80211_conf_tx, 1981 .configure_filter = rsi_mac80211_conf_filter, 1982 .set_key = rsi_mac80211_set_key, 1983 .set_rts_threshold = rsi_mac80211_set_rts_threshold, 1984 .set_bitrate_mask = rsi_mac80211_set_rate_mask, 1985 .ampdu_action = rsi_mac80211_ampdu_action, 1986 .sta_add = rsi_mac80211_sta_add, 1987 .sta_remove = rsi_mac80211_sta_remove, 1988 .set_antenna = rsi_mac80211_set_antenna, 1989 .get_antenna = rsi_mac80211_get_antenna, 1990 .rfkill_poll = rsi_mac80211_rfkill_poll, 1991 .remain_on_channel = rsi_mac80211_roc, 1992 .cancel_remain_on_channel = rsi_mac80211_cancel_roc, 1993 #ifdef CONFIG_PM 1994 .suspend = rsi_mac80211_suspend, 1995 .resume = rsi_mac80211_resume, 1996 #endif 1997 .hw_scan = rsi_mac80211_hw_scan_start, 1998 .cancel_hw_scan = rsi_mac80211_cancel_hw_scan, 1999 }; 2000 2001 /** 2002 * rsi_mac80211_attach() - This function is used to initialize Mac80211 stack. 2003 * @common: Pointer to the driver private structure. 2004 * 2005 * Return: 0 on success, negative error codes on failure. 2006 */ 2007 int rsi_mac80211_attach(struct rsi_common *common) 2008 { 2009 int status = 0; 2010 struct ieee80211_hw *hw = NULL; 2011 struct wiphy *wiphy = NULL; 2012 struct rsi_hw *adapter = common->priv; 2013 u8 addr_mask[ETH_ALEN] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x3}; 2014 2015 rsi_dbg(INIT_ZONE, "%s: Performing mac80211 attach\n", __func__); 2016 2017 hw = ieee80211_alloc_hw(sizeof(struct rsi_hw), &mac80211_ops); 2018 if (!hw) { 2019 rsi_dbg(ERR_ZONE, "%s: ieee80211 hw alloc failed\n", __func__); 2020 return -ENOMEM; 2021 } 2022 2023 wiphy = hw->wiphy; 2024 2025 SET_IEEE80211_DEV(hw, adapter->device); 2026 2027 hw->priv = adapter; 2028 adapter->hw = hw; 2029 2030 ieee80211_hw_set(hw, SIGNAL_DBM); 2031 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 2032 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 2033 ieee80211_hw_set(hw, SUPPORTS_PS); 2034 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 2035 2036 hw->queues = MAX_HW_QUEUES; 2037 hw->extra_tx_headroom = RSI_NEEDED_HEADROOM; 2038 2039 hw->max_rates = 1; 2040 hw->max_rate_tries = MAX_RETRIES; 2041 hw->uapsd_queues = RSI_IEEE80211_UAPSD_QUEUES; 2042 hw->uapsd_max_sp_len = IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL; 2043 2044 hw->max_tx_aggregation_subframes = RSI_MAX_TX_AGGR_FRMS; 2045 hw->max_rx_aggregation_subframes = RSI_MAX_RX_AGGR_FRMS; 2046 hw->rate_control_algorithm = "AARF"; 2047 2048 SET_IEEE80211_PERM_ADDR(hw, common->mac_addr); 2049 ether_addr_copy(hw->wiphy->addr_mask, addr_mask); 2050 2051 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 2052 BIT(NL80211_IFTYPE_AP) | 2053 BIT(NL80211_IFTYPE_P2P_DEVICE) | 2054 BIT(NL80211_IFTYPE_P2P_CLIENT) | 2055 BIT(NL80211_IFTYPE_P2P_GO); 2056 2057 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 2058 wiphy->retry_short = RETRY_SHORT; 2059 wiphy->retry_long = RETRY_LONG; 2060 wiphy->frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD; 2061 wiphy->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 2062 wiphy->flags = 0; 2063 2064 wiphy->available_antennas_rx = 1; 2065 wiphy->available_antennas_tx = 1; 2066 2067 status = rsi_register_rates_channels(adapter, NL80211_BAND_2GHZ); 2068 if (status) 2069 return status; 2070 wiphy->bands[NL80211_BAND_2GHZ] = 2071 &adapter->sbands[NL80211_BAND_2GHZ]; 2072 if (common->num_supp_bands > 1) { 2073 status = rsi_register_rates_channels(adapter, 2074 NL80211_BAND_5GHZ); 2075 if (status) 2076 return status; 2077 wiphy->bands[NL80211_BAND_5GHZ] = 2078 &adapter->sbands[NL80211_BAND_5GHZ]; 2079 } 2080 2081 /* AP Parameters */ 2082 wiphy->max_ap_assoc_sta = rsi_max_ap_stas[common->oper_mode - 1]; 2083 common->max_stations = wiphy->max_ap_assoc_sta; 2084 rsi_dbg(ERR_ZONE, "Max Stations Allowed = %d\n", common->max_stations); 2085 hw->sta_data_size = sizeof(struct rsi_sta); 2086 2087 wiphy->max_scan_ssids = RSI_MAX_SCAN_SSIDS; 2088 wiphy->max_scan_ie_len = RSI_MAX_SCAN_IE_LEN; 2089 wiphy->flags = WIPHY_FLAG_REPORTS_OBSS; 2090 wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 2091 wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER; 2092 wiphy->reg_notifier = rsi_reg_notify; 2093 2094 #ifdef CONFIG_PM 2095 wiphy->wowlan = &rsi_wowlan_support; 2096 #endif 2097 2098 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 2099 2100 /* Wi-Fi direct parameters */ 2101 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 2102 wiphy->flags |= WIPHY_FLAG_OFFCHAN_TX; 2103 wiphy->max_remain_on_channel_duration = 10000; 2104 hw->max_listen_interval = 10; 2105 wiphy->iface_combinations = rsi_iface_combinations; 2106 wiphy->n_iface_combinations = ARRAY_SIZE(rsi_iface_combinations); 2107 2108 if (common->coex_mode > 1) 2109 wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 2110 2111 status = ieee80211_register_hw(hw); 2112 if (status) 2113 return status; 2114 2115 return rsi_init_dbgfs(adapter); 2116 } 2117