1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * NXP Wireless LAN device driver: HW/FW Initialization 4 * 5 * Copyright 2011-2020 NXP 6 */ 7 8 #include "decl.h" 9 #include "ioctl.h" 10 #include "util.h" 11 #include "fw.h" 12 #include "main.h" 13 #include "wmm.h" 14 #include "11n.h" 15 16 /* 17 * This function adds a BSS priority table to the table list. 18 * 19 * The function allocates a new BSS priority table node and adds it to 20 * the end of BSS priority table list, kept in driver memory. 21 */ 22 static int mwifiex_add_bss_prio_tbl(struct mwifiex_private *priv) 23 { 24 struct mwifiex_adapter *adapter = priv->adapter; 25 struct mwifiex_bss_prio_node *bss_prio; 26 struct mwifiex_bss_prio_tbl *tbl = adapter->bss_prio_tbl; 27 28 bss_prio = kzalloc(sizeof(struct mwifiex_bss_prio_node), GFP_KERNEL); 29 if (!bss_prio) 30 return -ENOMEM; 31 32 bss_prio->priv = priv; 33 INIT_LIST_HEAD(&bss_prio->list); 34 35 spin_lock_bh(&tbl[priv->bss_priority].bss_prio_lock); 36 list_add_tail(&bss_prio->list, &tbl[priv->bss_priority].bss_prio_head); 37 spin_unlock_bh(&tbl[priv->bss_priority].bss_prio_lock); 38 39 return 0; 40 } 41 42 static void wakeup_timer_fn(struct timer_list *t) 43 { 44 struct mwifiex_adapter *adapter = from_timer(adapter, t, wakeup_timer); 45 46 mwifiex_dbg(adapter, ERROR, "Firmware wakeup failed\n"); 47 adapter->hw_status = MWIFIEX_HW_STATUS_RESET; 48 mwifiex_cancel_all_pending_cmd(adapter); 49 50 if (adapter->if_ops.card_reset) 51 adapter->if_ops.card_reset(adapter); 52 } 53 54 static void fw_dump_work(struct work_struct *work) 55 { 56 struct mwifiex_adapter *adapter = 57 container_of(work, struct mwifiex_adapter, devdump_work.work); 58 59 mwifiex_upload_device_dump(adapter); 60 } 61 62 /* 63 * This function initializes the private structure and sets default 64 * values to the members. 65 * 66 * Additionally, it also initializes all the locks and sets up all the 67 * lists. 68 */ 69 int mwifiex_init_priv(struct mwifiex_private *priv) 70 { 71 u32 i; 72 73 priv->media_connected = false; 74 eth_broadcast_addr(priv->curr_addr); 75 priv->port_open = false; 76 priv->usb_port = MWIFIEX_USB_EP_DATA; 77 priv->pkt_tx_ctrl = 0; 78 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED; 79 priv->data_rate = 0; /* Initially indicate the rate as auto */ 80 priv->is_data_rate_auto = true; 81 priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR; 82 priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR; 83 84 priv->auth_flag = 0; 85 priv->auth_alg = WLAN_AUTH_NONE; 86 87 priv->sec_info.wep_enabled = 0; 88 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM; 89 priv->sec_info.encryption_mode = 0; 90 for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++) 91 memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key)); 92 priv->wep_key_curr_index = 0; 93 priv->curr_pkt_filter = HostCmd_ACT_MAC_DYNAMIC_BW_ENABLE | 94 HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON | 95 HostCmd_ACT_MAC_ETHERNETII_ENABLE; 96 97 priv->beacon_period = 100; /* beacon interval */ 98 priv->attempted_bss_desc = NULL; 99 memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params)); 100 priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL; 101 102 memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid)); 103 memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid)); 104 memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf)); 105 priv->assoc_rsp_size = 0; 106 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL; 107 priv->atim_window = 0; 108 priv->adhoc_state = ADHOC_IDLE; 109 priv->tx_power_level = 0; 110 priv->max_tx_power_level = 0; 111 priv->min_tx_power_level = 0; 112 priv->tx_ant = 0; 113 priv->rx_ant = 0; 114 priv->tx_rate = 0; 115 priv->rxpd_htinfo = 0; 116 priv->rxpd_rate = 0; 117 priv->rate_bitmap = 0; 118 priv->data_rssi_last = 0; 119 priv->data_rssi_avg = 0; 120 priv->data_nf_avg = 0; 121 priv->data_nf_last = 0; 122 priv->bcn_rssi_last = 0; 123 priv->bcn_rssi_avg = 0; 124 priv->bcn_nf_avg = 0; 125 priv->bcn_nf_last = 0; 126 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie)); 127 memset(&priv->aes_key, 0, sizeof(priv->aes_key)); 128 priv->wpa_ie_len = 0; 129 priv->wpa_is_gtk_set = false; 130 131 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf)); 132 priv->assoc_tlv_buf_len = 0; 133 memset(&priv->wps, 0, sizeof(priv->wps)); 134 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf)); 135 priv->gen_ie_buf_len = 0; 136 memset(priv->vs_ie, 0, sizeof(priv->vs_ie)); 137 138 priv->wmm_required = true; 139 priv->wmm_enabled = false; 140 priv->wmm_qosinfo = 0; 141 priv->curr_bcn_buf = NULL; 142 priv->curr_bcn_size = 0; 143 priv->wps_ie = NULL; 144 priv->wps_ie_len = 0; 145 priv->ap_11n_enabled = 0; 146 memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg)); 147 148 priv->scan_block = false; 149 150 priv->csa_chan = 0; 151 priv->csa_expire_time = 0; 152 priv->del_list_idx = 0; 153 priv->hs2_enabled = false; 154 priv->check_tdls_tx = false; 155 memcpy(priv->tos_to_tid_inv, tos_to_tid_inv, MAX_NUM_TID); 156 157 mwifiex_init_11h_params(priv); 158 159 return mwifiex_add_bss_prio_tbl(priv); 160 } 161 162 /* 163 * This function allocates buffers for members of the adapter 164 * structure. 165 * 166 * The memory allocated includes scan table, command buffers, and 167 * sleep confirm command buffer. In addition, the queues are 168 * also initialized. 169 */ 170 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter) 171 { 172 int ret; 173 174 /* Allocate command buffer */ 175 ret = mwifiex_alloc_cmd_buffer(adapter); 176 if (ret) { 177 mwifiex_dbg(adapter, ERROR, 178 "%s: failed to alloc cmd buffer\n", 179 __func__); 180 return -1; 181 } 182 183 adapter->sleep_cfm = 184 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm) 185 + INTF_HEADER_LEN); 186 187 if (!adapter->sleep_cfm) { 188 mwifiex_dbg(adapter, ERROR, 189 "%s: failed to alloc sleep cfm\t" 190 " cmd buffer\n", __func__); 191 return -1; 192 } 193 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN); 194 195 return 0; 196 } 197 198 /* 199 * This function initializes the adapter structure and sets default 200 * values to the members of adapter. 201 * 202 * This also initializes the WMM related parameters in the driver private 203 * structures. 204 */ 205 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter) 206 { 207 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL; 208 209 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm)); 210 211 adapter->cmd_sent = false; 212 213 if (adapter->iface_type == MWIFIEX_SDIO) 214 adapter->data_sent = true; 215 else 216 adapter->data_sent = false; 217 218 if (adapter->iface_type == MWIFIEX_USB) 219 adapter->intf_hdr_len = 0; 220 else 221 adapter->intf_hdr_len = INTF_HEADER_LEN; 222 223 adapter->cmd_resp_received = false; 224 adapter->event_received = false; 225 adapter->data_received = false; 226 adapter->assoc_resp_received = false; 227 adapter->priv_link_lost = NULL; 228 adapter->host_mlme_link_lost = false; 229 230 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 231 232 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 233 234 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM; 235 adapter->ps_state = PS_STATE_AWAKE; 236 adapter->need_to_wakeup = false; 237 238 adapter->scan_mode = HostCmd_BSS_MODE_ANY; 239 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME; 240 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME; 241 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME; 242 adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME; 243 244 adapter->scan_probes = 1; 245 246 adapter->multiple_dtim = 1; 247 248 adapter->local_listen_interval = 0; /* default value in firmware 249 will be used */ 250 251 adapter->is_deep_sleep = false; 252 253 adapter->delay_null_pkt = false; 254 adapter->delay_to_ps = 1000; 255 adapter->enhanced_ps_mode = PS_MODE_AUTO; 256 257 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by 258 default */ 259 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by 260 default */ 261 adapter->pm_wakeup_card_req = false; 262 263 adapter->pm_wakeup_fw_try = false; 264 265 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 266 267 clear_bit(MWIFIEX_IS_HS_CONFIGURED, &adapter->work_flags); 268 adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF); 269 adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF; 270 adapter->hs_cfg.gap = HS_CFG_GAP_DEF; 271 adapter->hs_activated = false; 272 273 memset(adapter->event_body, 0, sizeof(adapter->event_body)); 274 adapter->hw_dot_11n_dev_cap = 0; 275 adapter->hw_dev_mcs_support = 0; 276 adapter->sec_chan_offset = 0; 277 adapter->adhoc_11n_enabled = false; 278 279 mwifiex_wmm_init(adapter); 280 atomic_set(&adapter->tx_hw_pending, 0); 281 282 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *) 283 adapter->sleep_cfm->data; 284 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len); 285 sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH); 286 sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len); 287 sleep_cfm_buf->result = 0; 288 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM); 289 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED); 290 291 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period)); 292 adapter->tx_lock_flag = false; 293 adapter->null_pkt_interval = 0; 294 adapter->fw_bands = 0; 295 adapter->config_bands = 0; 296 adapter->adhoc_start_band = 0; 297 adapter->fw_release_number = 0; 298 adapter->fw_cap_info = 0; 299 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf)); 300 adapter->event_cause = 0; 301 adapter->region_code = 0; 302 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT; 303 adapter->adhoc_awake_period = 0; 304 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter)); 305 adapter->arp_filter_size = 0; 306 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX; 307 adapter->mfg_mode = mfg_mode; 308 adapter->key_api_major_ver = 0; 309 adapter->key_api_minor_ver = 0; 310 eth_broadcast_addr(adapter->perm_addr); 311 adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM; 312 adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM; 313 adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM; 314 adapter->active_scan_triggered = false; 315 timer_setup(&adapter->wakeup_timer, wakeup_timer_fn, 0); 316 adapter->devdump_len = 0; 317 INIT_DELAYED_WORK(&adapter->devdump_work, fw_dump_work); 318 } 319 320 /* 321 * This function sets trans_start per tx_queue 322 */ 323 void mwifiex_set_trans_start(struct net_device *dev) 324 { 325 int i; 326 327 for (i = 0; i < dev->num_tx_queues; i++) 328 txq_trans_cond_update(netdev_get_tx_queue(dev, i)); 329 330 netif_trans_update(dev); 331 } 332 333 /* 334 * This function wakes up all queues in net_device 335 */ 336 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev, 337 struct mwifiex_adapter *adapter) 338 { 339 spin_lock_bh(&adapter->queue_lock); 340 netif_tx_wake_all_queues(netdev); 341 spin_unlock_bh(&adapter->queue_lock); 342 } 343 344 /* 345 * This function stops all queues in net_device 346 */ 347 void mwifiex_stop_net_dev_queue(struct net_device *netdev, 348 struct mwifiex_adapter *adapter) 349 { 350 spin_lock_bh(&adapter->queue_lock); 351 netif_tx_stop_all_queues(netdev); 352 spin_unlock_bh(&adapter->queue_lock); 353 } 354 355 /* 356 * This function invalidates the list heads. 357 */ 358 static void mwifiex_invalidate_lists(struct mwifiex_adapter *adapter) 359 { 360 struct mwifiex_private *priv; 361 s32 i, j; 362 363 list_del(&adapter->cmd_free_q); 364 list_del(&adapter->cmd_pending_q); 365 list_del(&adapter->scan_pending_q); 366 367 for (i = 0; i < adapter->priv_num; i++) 368 list_del(&adapter->bss_prio_tbl[i].bss_prio_head); 369 370 for (i = 0; i < adapter->priv_num; i++) { 371 priv = adapter->priv[i]; 372 for (j = 0; j < MAX_NUM_TID; ++j) 373 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list); 374 list_del(&priv->tx_ba_stream_tbl_ptr); 375 list_del(&priv->rx_reorder_tbl_ptr); 376 list_del(&priv->sta_list); 377 list_del(&priv->auto_tdls_list); 378 } 379 } 380 381 /* 382 * This function performs cleanup for adapter structure. 383 * 384 * The cleanup is done recursively, by canceling all pending 385 * commands, freeing the member buffers previously allocated 386 * (command buffers, scan table buffer, sleep confirm command 387 * buffer), stopping the timers and calling the cleanup routines 388 * for every interface. 389 */ 390 static void 391 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter) 392 { 393 del_timer(&adapter->wakeup_timer); 394 cancel_delayed_work_sync(&adapter->devdump_work); 395 mwifiex_cancel_all_pending_cmd(adapter); 396 wake_up_interruptible(&adapter->cmd_wait_q.wait); 397 wake_up_interruptible(&adapter->hs_activate_wait_q); 398 } 399 400 void mwifiex_free_cmd_buffers(struct mwifiex_adapter *adapter) 401 { 402 mwifiex_invalidate_lists(adapter); 403 404 /* Free command buffer */ 405 mwifiex_dbg(adapter, INFO, "info: free cmd buffer\n"); 406 mwifiex_free_cmd_buffer(adapter); 407 408 if (adapter->sleep_cfm) 409 dev_kfree_skb_any(adapter->sleep_cfm); 410 } 411 412 /* 413 * This function intializes the lock variables and 414 * the list heads. 415 */ 416 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter) 417 { 418 struct mwifiex_private *priv; 419 s32 i, j; 420 421 spin_lock_init(&adapter->int_lock); 422 spin_lock_init(&adapter->main_proc_lock); 423 spin_lock_init(&adapter->mwifiex_cmd_lock); 424 spin_lock_init(&adapter->queue_lock); 425 for (i = 0; i < adapter->priv_num; i++) { 426 priv = adapter->priv[i]; 427 spin_lock_init(&priv->wmm.ra_list_spinlock); 428 spin_lock_init(&priv->curr_bcn_buf_lock); 429 spin_lock_init(&priv->sta_list_spinlock); 430 spin_lock_init(&priv->auto_tdls_lock); 431 } 432 433 /* Initialize cmd_free_q */ 434 INIT_LIST_HEAD(&adapter->cmd_free_q); 435 /* Initialize cmd_pending_q */ 436 INIT_LIST_HEAD(&adapter->cmd_pending_q); 437 /* Initialize scan_pending_q */ 438 INIT_LIST_HEAD(&adapter->scan_pending_q); 439 440 spin_lock_init(&adapter->cmd_free_q_lock); 441 spin_lock_init(&adapter->cmd_pending_q_lock); 442 spin_lock_init(&adapter->scan_pending_q_lock); 443 spin_lock_init(&adapter->rx_proc_lock); 444 445 skb_queue_head_init(&adapter->rx_data_q); 446 skb_queue_head_init(&adapter->tx_data_q); 447 448 for (i = 0; i < adapter->priv_num; ++i) { 449 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head); 450 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock); 451 } 452 453 for (i = 0; i < adapter->priv_num; i++) { 454 priv = adapter->priv[i]; 455 for (j = 0; j < MAX_NUM_TID; ++j) 456 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list); 457 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); 458 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); 459 INIT_LIST_HEAD(&priv->sta_list); 460 INIT_LIST_HEAD(&priv->auto_tdls_list); 461 skb_queue_head_init(&priv->tdls_txq); 462 skb_queue_head_init(&priv->bypass_txq); 463 464 spin_lock_init(&priv->tx_ba_stream_tbl_lock); 465 spin_lock_init(&priv->rx_reorder_tbl_lock); 466 467 spin_lock_init(&priv->ack_status_lock); 468 idr_init(&priv->ack_status_frames); 469 } 470 471 return 0; 472 } 473 474 /* 475 * This function initializes the firmware. 476 * 477 * The following operations are performed sequentially - 478 * - Allocate adapter structure 479 * - Initialize the adapter structure 480 * - Initialize the private structure 481 * - Add BSS priority tables to the adapter structure 482 * - For each interface, send the init commands to firmware 483 * - Send the first command in command pending queue, if available 484 */ 485 int mwifiex_init_fw(struct mwifiex_adapter *adapter) 486 { 487 int ret; 488 struct mwifiex_private *priv; 489 u8 i, first_sta = true; 490 int is_cmd_pend_q_empty; 491 492 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 493 494 /* Allocate memory for member of adapter structure */ 495 ret = mwifiex_allocate_adapter(adapter); 496 if (ret) 497 return -1; 498 499 /* Initialize adapter structure */ 500 mwifiex_init_adapter(adapter); 501 502 for (i = 0; i < adapter->priv_num; i++) { 503 priv = adapter->priv[i]; 504 505 /* Initialize private structure */ 506 ret = mwifiex_init_priv(priv); 507 if (ret) 508 return -1; 509 } 510 if (adapter->mfg_mode) { 511 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 512 ret = -EINPROGRESS; 513 } else { 514 for (i = 0; i < adapter->priv_num; i++) { 515 ret = mwifiex_sta_init_cmd(adapter->priv[i], 516 first_sta, true); 517 if (ret == -1) 518 return -1; 519 520 first_sta = false; 521 } 522 } 523 524 spin_lock_bh(&adapter->cmd_pending_q_lock); 525 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); 526 spin_unlock_bh(&adapter->cmd_pending_q_lock); 527 if (!is_cmd_pend_q_empty) { 528 /* Send the first command in queue and return */ 529 if (mwifiex_main_process(adapter) != -1) 530 ret = -EINPROGRESS; 531 } else { 532 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 533 } 534 535 return ret; 536 } 537 538 /* 539 * This function deletes the BSS priority tables. 540 * 541 * The function traverses through all the allocated BSS priority nodes 542 * in every BSS priority table and frees them. 543 */ 544 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv) 545 { 546 int i; 547 struct mwifiex_adapter *adapter = priv->adapter; 548 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node; 549 struct list_head *head; 550 spinlock_t *lock; /* bss priority lock */ 551 552 for (i = 0; i < adapter->priv_num; ++i) { 553 head = &adapter->bss_prio_tbl[i].bss_prio_head; 554 lock = &adapter->bss_prio_tbl[i].bss_prio_lock; 555 mwifiex_dbg(adapter, INFO, 556 "info: delete BSS priority table,\t" 557 "bss_type = %d, bss_num = %d, i = %d,\t" 558 "head = %p\n", 559 priv->bss_type, priv->bss_num, i, head); 560 561 { 562 spin_lock_bh(lock); 563 list_for_each_entry_safe(bssprio_node, tmp_node, head, 564 list) { 565 if (bssprio_node->priv == priv) { 566 mwifiex_dbg(adapter, INFO, 567 "info: Delete\t" 568 "node %p, next = %p\n", 569 bssprio_node, tmp_node); 570 list_del(&bssprio_node->list); 571 kfree(bssprio_node); 572 } 573 } 574 spin_unlock_bh(lock); 575 } 576 } 577 } 578 579 /* 580 * This function frees the private structure, including cleans 581 * up the TX and RX queues and frees the BSS priority tables. 582 */ 583 void mwifiex_free_priv(struct mwifiex_private *priv) 584 { 585 mwifiex_clean_txrx(priv); 586 mwifiex_delete_bss_prio_tbl(priv); 587 mwifiex_free_curr_bcn(priv); 588 } 589 590 /* 591 * This function is used to shutdown the driver. 592 * 593 * The following operations are performed sequentially - 594 * - Check if already shut down 595 * - Make sure the main process has stopped 596 * - Clean up the Tx and Rx queues 597 * - Delete BSS priority tables 598 * - Free the adapter 599 * - Notify completion 600 */ 601 void 602 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter) 603 { 604 struct mwifiex_private *priv; 605 s32 i; 606 struct sk_buff *skb; 607 608 /* mwifiex already shutdown */ 609 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) 610 return; 611 612 /* cancel current command */ 613 if (adapter->curr_cmd) { 614 mwifiex_dbg(adapter, WARN, 615 "curr_cmd is still in processing\n"); 616 del_timer_sync(&adapter->cmd_timer); 617 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); 618 adapter->curr_cmd = NULL; 619 } 620 621 /* shut down mwifiex */ 622 mwifiex_dbg(adapter, MSG, 623 "info: shutdown mwifiex...\n"); 624 625 /* Clean up Tx/Rx queues and delete BSS priority table */ 626 for (i = 0; i < adapter->priv_num; i++) { 627 priv = adapter->priv[i]; 628 629 mwifiex_clean_auto_tdls(priv); 630 mwifiex_abort_cac(priv); 631 mwifiex_free_priv(priv); 632 } 633 634 atomic_set(&adapter->tx_queued, 0); 635 while ((skb = skb_dequeue(&adapter->tx_data_q))) 636 mwifiex_write_data_complete(adapter, skb, 0, 0); 637 638 spin_lock_bh(&adapter->rx_proc_lock); 639 640 while ((skb = skb_dequeue(&adapter->rx_data_q))) { 641 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb); 642 643 atomic_dec(&adapter->rx_pending); 644 priv = adapter->priv[rx_info->bss_num]; 645 if (priv) 646 priv->stats.rx_dropped++; 647 648 dev_kfree_skb_any(skb); 649 } 650 651 spin_unlock_bh(&adapter->rx_proc_lock); 652 653 mwifiex_adapter_cleanup(adapter); 654 655 adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY; 656 } 657 658 /* 659 * This function downloads the firmware to the card. 660 * 661 * The actual download is preceded by two sanity checks - 662 * - Check if firmware is already running 663 * - Check if the interface is the winner to download the firmware 664 * 665 * ...and followed by another - 666 * - Check if the firmware is downloaded successfully 667 * 668 * After download is successfully completed, the host interrupts are enabled. 669 */ 670 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter, 671 struct mwifiex_fw_image *pmfw) 672 { 673 int ret; 674 u32 poll_num = 1; 675 676 /* check if firmware is already running */ 677 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 678 if (!ret) { 679 mwifiex_dbg(adapter, MSG, 680 "WLAN FW already running! Skip FW dnld\n"); 681 return 0; 682 } 683 684 /* check if we are the winner for downloading FW */ 685 if (adapter->if_ops.check_winner_status) { 686 adapter->winner = 0; 687 ret = adapter->if_ops.check_winner_status(adapter); 688 689 poll_num = MAX_FIRMWARE_POLL_TRIES; 690 if (ret) { 691 mwifiex_dbg(adapter, MSG, 692 "WLAN read winner status failed!\n"); 693 return ret; 694 } 695 696 if (!adapter->winner) { 697 mwifiex_dbg(adapter, MSG, 698 "WLAN is not the winner! Skip FW dnld\n"); 699 goto poll_fw; 700 } 701 } 702 703 if (pmfw) { 704 /* Download firmware with helper */ 705 ret = adapter->if_ops.prog_fw(adapter, pmfw); 706 if (ret) { 707 mwifiex_dbg(adapter, ERROR, 708 "prog_fw failed ret=%#x\n", ret); 709 return ret; 710 } 711 } 712 713 poll_fw: 714 /* Check if the firmware is downloaded successfully or not */ 715 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 716 if (ret) 717 mwifiex_dbg(adapter, ERROR, 718 "FW failed to be active in time\n"); 719 720 return ret; 721 } 722 EXPORT_SYMBOL_GPL(mwifiex_dnld_fw); 723