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->sec_info.wep_enabled = 0; 85 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM; 86 priv->sec_info.encryption_mode = 0; 87 for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++) 88 memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key)); 89 priv->wep_key_curr_index = 0; 90 priv->curr_pkt_filter = HostCmd_ACT_MAC_DYNAMIC_BW_ENABLE | 91 HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON | 92 HostCmd_ACT_MAC_ETHERNETII_ENABLE; 93 94 priv->beacon_period = 100; /* beacon interval */ 95 priv->attempted_bss_desc = NULL; 96 memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params)); 97 priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL; 98 99 memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid)); 100 memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid)); 101 memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf)); 102 priv->assoc_rsp_size = 0; 103 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL; 104 priv->atim_window = 0; 105 priv->adhoc_state = ADHOC_IDLE; 106 priv->tx_power_level = 0; 107 priv->max_tx_power_level = 0; 108 priv->min_tx_power_level = 0; 109 priv->tx_ant = 0; 110 priv->rx_ant = 0; 111 priv->tx_rate = 0; 112 priv->rxpd_htinfo = 0; 113 priv->rxpd_rate = 0; 114 priv->rate_bitmap = 0; 115 priv->data_rssi_last = 0; 116 priv->data_rssi_avg = 0; 117 priv->data_nf_avg = 0; 118 priv->data_nf_last = 0; 119 priv->bcn_rssi_last = 0; 120 priv->bcn_rssi_avg = 0; 121 priv->bcn_nf_avg = 0; 122 priv->bcn_nf_last = 0; 123 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie)); 124 memset(&priv->aes_key, 0, sizeof(priv->aes_key)); 125 priv->wpa_ie_len = 0; 126 priv->wpa_is_gtk_set = false; 127 128 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf)); 129 priv->assoc_tlv_buf_len = 0; 130 memset(&priv->wps, 0, sizeof(priv->wps)); 131 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf)); 132 priv->gen_ie_buf_len = 0; 133 memset(priv->vs_ie, 0, sizeof(priv->vs_ie)); 134 135 priv->wmm_required = true; 136 priv->wmm_enabled = false; 137 priv->wmm_qosinfo = 0; 138 priv->curr_bcn_buf = NULL; 139 priv->curr_bcn_size = 0; 140 priv->wps_ie = NULL; 141 priv->wps_ie_len = 0; 142 priv->ap_11n_enabled = 0; 143 memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg)); 144 145 priv->scan_block = false; 146 147 priv->csa_chan = 0; 148 priv->csa_expire_time = 0; 149 priv->del_list_idx = 0; 150 priv->hs2_enabled = false; 151 priv->check_tdls_tx = false; 152 memcpy(priv->tos_to_tid_inv, tos_to_tid_inv, MAX_NUM_TID); 153 154 mwifiex_init_11h_params(priv); 155 156 return mwifiex_add_bss_prio_tbl(priv); 157 } 158 159 /* 160 * This function allocates buffers for members of the adapter 161 * structure. 162 * 163 * The memory allocated includes scan table, command buffers, and 164 * sleep confirm command buffer. In addition, the queues are 165 * also initialized. 166 */ 167 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter) 168 { 169 int ret; 170 171 /* Allocate command buffer */ 172 ret = mwifiex_alloc_cmd_buffer(adapter); 173 if (ret) { 174 mwifiex_dbg(adapter, ERROR, 175 "%s: failed to alloc cmd buffer\n", 176 __func__); 177 return -1; 178 } 179 180 adapter->sleep_cfm = 181 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm) 182 + INTF_HEADER_LEN); 183 184 if (!adapter->sleep_cfm) { 185 mwifiex_dbg(adapter, ERROR, 186 "%s: failed to alloc sleep cfm\t" 187 " cmd buffer\n", __func__); 188 return -1; 189 } 190 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN); 191 192 return 0; 193 } 194 195 /* 196 * This function initializes the adapter structure and sets default 197 * values to the members of adapter. 198 * 199 * This also initializes the WMM related parameters in the driver private 200 * structures. 201 */ 202 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter) 203 { 204 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL; 205 206 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm)); 207 208 adapter->cmd_sent = false; 209 210 if (adapter->iface_type == MWIFIEX_SDIO) 211 adapter->data_sent = true; 212 else 213 adapter->data_sent = false; 214 215 if (adapter->iface_type == MWIFIEX_USB) 216 adapter->intf_hdr_len = 0; 217 else 218 adapter->intf_hdr_len = INTF_HEADER_LEN; 219 220 adapter->cmd_resp_received = false; 221 adapter->event_received = false; 222 adapter->data_received = false; 223 224 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 225 226 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 227 228 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM; 229 adapter->ps_state = PS_STATE_AWAKE; 230 adapter->need_to_wakeup = false; 231 232 adapter->scan_mode = HostCmd_BSS_MODE_ANY; 233 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME; 234 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME; 235 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME; 236 adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME; 237 238 adapter->scan_probes = 1; 239 240 adapter->multiple_dtim = 1; 241 242 adapter->local_listen_interval = 0; /* default value in firmware 243 will be used */ 244 245 adapter->is_deep_sleep = false; 246 247 adapter->delay_null_pkt = false; 248 adapter->delay_to_ps = 1000; 249 adapter->enhanced_ps_mode = PS_MODE_AUTO; 250 251 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by 252 default */ 253 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by 254 default */ 255 adapter->pm_wakeup_card_req = false; 256 257 adapter->pm_wakeup_fw_try = false; 258 259 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 260 261 clear_bit(MWIFIEX_IS_HS_CONFIGURED, &adapter->work_flags); 262 adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF); 263 adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF; 264 adapter->hs_cfg.gap = HS_CFG_GAP_DEF; 265 adapter->hs_activated = false; 266 267 memset(adapter->event_body, 0, sizeof(adapter->event_body)); 268 adapter->hw_dot_11n_dev_cap = 0; 269 adapter->hw_dev_mcs_support = 0; 270 adapter->sec_chan_offset = 0; 271 adapter->adhoc_11n_enabled = false; 272 273 mwifiex_wmm_init(adapter); 274 atomic_set(&adapter->tx_hw_pending, 0); 275 276 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *) 277 adapter->sleep_cfm->data; 278 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len); 279 sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH); 280 sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len); 281 sleep_cfm_buf->result = 0; 282 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM); 283 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED); 284 285 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params)); 286 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period)); 287 adapter->tx_lock_flag = false; 288 adapter->null_pkt_interval = 0; 289 adapter->fw_bands = 0; 290 adapter->config_bands = 0; 291 adapter->adhoc_start_band = 0; 292 adapter->scan_channels = NULL; 293 adapter->fw_release_number = 0; 294 adapter->fw_cap_info = 0; 295 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf)); 296 adapter->event_cause = 0; 297 adapter->region_code = 0; 298 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT; 299 adapter->adhoc_awake_period = 0; 300 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter)); 301 adapter->arp_filter_size = 0; 302 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX; 303 adapter->mfg_mode = mfg_mode; 304 adapter->key_api_major_ver = 0; 305 adapter->key_api_minor_ver = 0; 306 eth_broadcast_addr(adapter->perm_addr); 307 adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM; 308 adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM; 309 adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM; 310 adapter->active_scan_triggered = false; 311 timer_setup(&adapter->wakeup_timer, wakeup_timer_fn, 0); 312 adapter->devdump_len = 0; 313 INIT_DELAYED_WORK(&adapter->devdump_work, fw_dump_work); 314 } 315 316 /* 317 * This function sets trans_start per tx_queue 318 */ 319 void mwifiex_set_trans_start(struct net_device *dev) 320 { 321 int i; 322 323 for (i = 0; i < dev->num_tx_queues; i++) 324 txq_trans_cond_update(netdev_get_tx_queue(dev, i)); 325 326 netif_trans_update(dev); 327 } 328 329 /* 330 * This function wakes up all queues in net_device 331 */ 332 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev, 333 struct mwifiex_adapter *adapter) 334 { 335 spin_lock_bh(&adapter->queue_lock); 336 netif_tx_wake_all_queues(netdev); 337 spin_unlock_bh(&adapter->queue_lock); 338 } 339 340 /* 341 * This function stops all queues in net_device 342 */ 343 void mwifiex_stop_net_dev_queue(struct net_device *netdev, 344 struct mwifiex_adapter *adapter) 345 { 346 spin_lock_bh(&adapter->queue_lock); 347 netif_tx_stop_all_queues(netdev); 348 spin_unlock_bh(&adapter->queue_lock); 349 } 350 351 /* 352 * This function invalidates the list heads. 353 */ 354 static void mwifiex_invalidate_lists(struct mwifiex_adapter *adapter) 355 { 356 struct mwifiex_private *priv; 357 s32 i, j; 358 359 list_del(&adapter->cmd_free_q); 360 list_del(&adapter->cmd_pending_q); 361 list_del(&adapter->scan_pending_q); 362 363 for (i = 0; i < adapter->priv_num; i++) 364 list_del(&adapter->bss_prio_tbl[i].bss_prio_head); 365 366 for (i = 0; i < adapter->priv_num; i++) { 367 if (adapter->priv[i]) { 368 priv = adapter->priv[i]; 369 for (j = 0; j < MAX_NUM_TID; ++j) 370 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list); 371 list_del(&priv->tx_ba_stream_tbl_ptr); 372 list_del(&priv->rx_reorder_tbl_ptr); 373 list_del(&priv->sta_list); 374 list_del(&priv->auto_tdls_list); 375 } 376 } 377 } 378 379 /* 380 * This function performs cleanup for adapter structure. 381 * 382 * The cleanup is done recursively, by canceling all pending 383 * commands, freeing the member buffers previously allocated 384 * (command buffers, scan table buffer, sleep confirm command 385 * buffer), stopping the timers and calling the cleanup routines 386 * for every interface. 387 */ 388 static void 389 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter) 390 { 391 del_timer(&adapter->wakeup_timer); 392 cancel_delayed_work_sync(&adapter->devdump_work); 393 mwifiex_cancel_all_pending_cmd(adapter); 394 wake_up_interruptible(&adapter->cmd_wait_q.wait); 395 wake_up_interruptible(&adapter->hs_activate_wait_q); 396 } 397 398 void mwifiex_free_cmd_buffers(struct mwifiex_adapter *adapter) 399 { 400 mwifiex_invalidate_lists(adapter); 401 402 /* Free command buffer */ 403 mwifiex_dbg(adapter, INFO, "info: free cmd buffer\n"); 404 mwifiex_free_cmd_buffer(adapter); 405 406 if (adapter->sleep_cfm) 407 dev_kfree_skb_any(adapter->sleep_cfm); 408 } 409 410 /* 411 * This function intializes the lock variables and 412 * the list heads. 413 */ 414 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter) 415 { 416 struct mwifiex_private *priv; 417 s32 i, j; 418 419 spin_lock_init(&adapter->int_lock); 420 spin_lock_init(&adapter->main_proc_lock); 421 spin_lock_init(&adapter->mwifiex_cmd_lock); 422 spin_lock_init(&adapter->queue_lock); 423 for (i = 0; i < adapter->priv_num; i++) { 424 if (adapter->priv[i]) { 425 priv = adapter->priv[i]; 426 spin_lock_init(&priv->wmm.ra_list_spinlock); 427 spin_lock_init(&priv->curr_bcn_buf_lock); 428 spin_lock_init(&priv->sta_list_spinlock); 429 spin_lock_init(&priv->auto_tdls_lock); 430 } 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 if (!adapter->priv[i]) 455 continue; 456 priv = adapter->priv[i]; 457 for (j = 0; j < MAX_NUM_TID; ++j) 458 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list); 459 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); 460 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); 461 INIT_LIST_HEAD(&priv->sta_list); 462 INIT_LIST_HEAD(&priv->auto_tdls_list); 463 skb_queue_head_init(&priv->tdls_txq); 464 skb_queue_head_init(&priv->bypass_txq); 465 466 spin_lock_init(&priv->tx_ba_stream_tbl_lock); 467 spin_lock_init(&priv->rx_reorder_tbl_lock); 468 469 spin_lock_init(&priv->ack_status_lock); 470 idr_init(&priv->ack_status_frames); 471 } 472 473 return 0; 474 } 475 476 /* 477 * This function initializes the firmware. 478 * 479 * The following operations are performed sequentially - 480 * - Allocate adapter structure 481 * - Initialize the adapter structure 482 * - Initialize the private structure 483 * - Add BSS priority tables to the adapter structure 484 * - For each interface, send the init commands to firmware 485 * - Send the first command in command pending queue, if available 486 */ 487 int mwifiex_init_fw(struct mwifiex_adapter *adapter) 488 { 489 int ret; 490 struct mwifiex_private *priv; 491 u8 i, first_sta = true; 492 int is_cmd_pend_q_empty; 493 494 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 495 496 /* Allocate memory for member of adapter structure */ 497 ret = mwifiex_allocate_adapter(adapter); 498 if (ret) 499 return -1; 500 501 /* Initialize adapter structure */ 502 mwifiex_init_adapter(adapter); 503 504 for (i = 0; i < adapter->priv_num; i++) { 505 if (adapter->priv[i]) { 506 priv = adapter->priv[i]; 507 508 /* Initialize private structure */ 509 ret = mwifiex_init_priv(priv); 510 if (ret) 511 return -1; 512 } 513 } 514 if (adapter->mfg_mode) { 515 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 516 ret = -EINPROGRESS; 517 } else { 518 for (i = 0; i < adapter->priv_num; i++) { 519 if (adapter->priv[i]) { 520 ret = mwifiex_sta_init_cmd(adapter->priv[i], 521 first_sta, true); 522 if (ret == -1) 523 return -1; 524 525 first_sta = false; 526 } 527 528 529 530 } 531 } 532 533 spin_lock_bh(&adapter->cmd_pending_q_lock); 534 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); 535 spin_unlock_bh(&adapter->cmd_pending_q_lock); 536 if (!is_cmd_pend_q_empty) { 537 /* Send the first command in queue and return */ 538 if (mwifiex_main_process(adapter) != -1) 539 ret = -EINPROGRESS; 540 } else { 541 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 542 } 543 544 return ret; 545 } 546 547 /* 548 * This function deletes the BSS priority tables. 549 * 550 * The function traverses through all the allocated BSS priority nodes 551 * in every BSS priority table and frees them. 552 */ 553 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv) 554 { 555 int i; 556 struct mwifiex_adapter *adapter = priv->adapter; 557 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node; 558 struct list_head *head; 559 spinlock_t *lock; /* bss priority lock */ 560 561 for (i = 0; i < adapter->priv_num; ++i) { 562 head = &adapter->bss_prio_tbl[i].bss_prio_head; 563 lock = &adapter->bss_prio_tbl[i].bss_prio_lock; 564 mwifiex_dbg(adapter, INFO, 565 "info: delete BSS priority table,\t" 566 "bss_type = %d, bss_num = %d, i = %d,\t" 567 "head = %p\n", 568 priv->bss_type, priv->bss_num, i, head); 569 570 { 571 spin_lock_bh(lock); 572 list_for_each_entry_safe(bssprio_node, tmp_node, head, 573 list) { 574 if (bssprio_node->priv == priv) { 575 mwifiex_dbg(adapter, INFO, 576 "info: Delete\t" 577 "node %p, next = %p\n", 578 bssprio_node, tmp_node); 579 list_del(&bssprio_node->list); 580 kfree(bssprio_node); 581 } 582 } 583 spin_unlock_bh(lock); 584 } 585 } 586 } 587 588 /* 589 * This function frees the private structure, including cleans 590 * up the TX and RX queues and frees the BSS priority tables. 591 */ 592 void mwifiex_free_priv(struct mwifiex_private *priv) 593 { 594 mwifiex_clean_txrx(priv); 595 mwifiex_delete_bss_prio_tbl(priv); 596 mwifiex_free_curr_bcn(priv); 597 } 598 599 /* 600 * This function is used to shutdown the driver. 601 * 602 * The following operations are performed sequentially - 603 * - Check if already shut down 604 * - Make sure the main process has stopped 605 * - Clean up the Tx and Rx queues 606 * - Delete BSS priority tables 607 * - Free the adapter 608 * - Notify completion 609 */ 610 void 611 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter) 612 { 613 struct mwifiex_private *priv; 614 s32 i; 615 struct sk_buff *skb; 616 617 /* mwifiex already shutdown */ 618 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) 619 return; 620 621 /* cancel current command */ 622 if (adapter->curr_cmd) { 623 mwifiex_dbg(adapter, WARN, 624 "curr_cmd is still in processing\n"); 625 del_timer_sync(&adapter->cmd_timer); 626 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); 627 adapter->curr_cmd = NULL; 628 } 629 630 /* shut down mwifiex */ 631 mwifiex_dbg(adapter, MSG, 632 "info: shutdown mwifiex...\n"); 633 634 /* Clean up Tx/Rx queues and delete BSS priority table */ 635 for (i = 0; i < adapter->priv_num; i++) { 636 if (adapter->priv[i]) { 637 priv = adapter->priv[i]; 638 639 mwifiex_clean_auto_tdls(priv); 640 mwifiex_abort_cac(priv); 641 mwifiex_free_priv(priv); 642 } 643 } 644 645 atomic_set(&adapter->tx_queued, 0); 646 while ((skb = skb_dequeue(&adapter->tx_data_q))) 647 mwifiex_write_data_complete(adapter, skb, 0, 0); 648 649 spin_lock_bh(&adapter->rx_proc_lock); 650 651 while ((skb = skb_dequeue(&adapter->rx_data_q))) { 652 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb); 653 654 atomic_dec(&adapter->rx_pending); 655 priv = adapter->priv[rx_info->bss_num]; 656 if (priv) 657 priv->stats.rx_dropped++; 658 659 dev_kfree_skb_any(skb); 660 } 661 662 spin_unlock_bh(&adapter->rx_proc_lock); 663 664 mwifiex_adapter_cleanup(adapter); 665 666 adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY; 667 } 668 669 /* 670 * This function downloads the firmware to the card. 671 * 672 * The actual download is preceded by two sanity checks - 673 * - Check if firmware is already running 674 * - Check if the interface is the winner to download the firmware 675 * 676 * ...and followed by another - 677 * - Check if the firmware is downloaded successfully 678 * 679 * After download is successfully completed, the host interrupts are enabled. 680 */ 681 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter, 682 struct mwifiex_fw_image *pmfw) 683 { 684 int ret; 685 u32 poll_num = 1; 686 687 /* check if firmware is already running */ 688 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 689 if (!ret) { 690 mwifiex_dbg(adapter, MSG, 691 "WLAN FW already running! Skip FW dnld\n"); 692 return 0; 693 } 694 695 /* check if we are the winner for downloading FW */ 696 if (adapter->if_ops.check_winner_status) { 697 adapter->winner = 0; 698 ret = adapter->if_ops.check_winner_status(adapter); 699 700 poll_num = MAX_FIRMWARE_POLL_TRIES; 701 if (ret) { 702 mwifiex_dbg(adapter, MSG, 703 "WLAN read winner status failed!\n"); 704 return ret; 705 } 706 707 if (!adapter->winner) { 708 mwifiex_dbg(adapter, MSG, 709 "WLAN is not the winner! Skip FW dnld\n"); 710 goto poll_fw; 711 } 712 } 713 714 if (pmfw) { 715 /* Download firmware with helper */ 716 ret = adapter->if_ops.prog_fw(adapter, pmfw); 717 if (ret) { 718 mwifiex_dbg(adapter, ERROR, 719 "prog_fw failed ret=%#x\n", ret); 720 return ret; 721 } 722 } 723 724 poll_fw: 725 /* Check if the firmware is downloaded successfully or not */ 726 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 727 if (ret) 728 mwifiex_dbg(adapter, ERROR, 729 "FW failed to be active in time\n"); 730 731 return ret; 732 } 733 EXPORT_SYMBOL_GPL(mwifiex_dnld_fw); 734