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_timer_fn(struct timer_list *t) 55 { 56 struct mwifiex_adapter *adapter = from_timer(adapter, t, devdump_timer); 57 58 mwifiex_upload_device_dump(adapter); 59 } 60 61 /* 62 * This function initializes the private structure and sets default 63 * values to the members. 64 * 65 * Additionally, it also initializes all the locks and sets up all the 66 * lists. 67 */ 68 int mwifiex_init_priv(struct mwifiex_private *priv) 69 { 70 u32 i; 71 72 priv->media_connected = false; 73 eth_broadcast_addr(priv->curr_addr); 74 priv->port_open = false; 75 priv->usb_port = MWIFIEX_USB_EP_DATA; 76 priv->pkt_tx_ctrl = 0; 77 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED; 78 priv->data_rate = 0; /* Initially indicate the rate as auto */ 79 priv->is_data_rate_auto = true; 80 priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR; 81 priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR; 82 83 priv->sec_info.wep_enabled = 0; 84 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM; 85 priv->sec_info.encryption_mode = 0; 86 for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++) 87 memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key)); 88 priv->wep_key_curr_index = 0; 89 priv->curr_pkt_filter = HostCmd_ACT_MAC_DYNAMIC_BW_ENABLE | 90 HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON | 91 HostCmd_ACT_MAC_ETHERNETII_ENABLE; 92 93 priv->beacon_period = 100; /* beacon interval */ 94 priv->attempted_bss_desc = NULL; 95 memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params)); 96 priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL; 97 98 memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid)); 99 memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid)); 100 memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf)); 101 priv->assoc_rsp_size = 0; 102 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL; 103 priv->atim_window = 0; 104 priv->adhoc_state = ADHOC_IDLE; 105 priv->tx_power_level = 0; 106 priv->max_tx_power_level = 0; 107 priv->min_tx_power_level = 0; 108 priv->tx_ant = 0; 109 priv->rx_ant = 0; 110 priv->tx_rate = 0; 111 priv->rxpd_htinfo = 0; 112 priv->rxpd_rate = 0; 113 priv->rate_bitmap = 0; 114 priv->data_rssi_last = 0; 115 priv->data_rssi_avg = 0; 116 priv->data_nf_avg = 0; 117 priv->data_nf_last = 0; 118 priv->bcn_rssi_last = 0; 119 priv->bcn_rssi_avg = 0; 120 priv->bcn_nf_avg = 0; 121 priv->bcn_nf_last = 0; 122 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie)); 123 memset(&priv->aes_key, 0, sizeof(priv->aes_key)); 124 priv->wpa_ie_len = 0; 125 priv->wpa_is_gtk_set = false; 126 127 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf)); 128 priv->assoc_tlv_buf_len = 0; 129 memset(&priv->wps, 0, sizeof(priv->wps)); 130 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf)); 131 priv->gen_ie_buf_len = 0; 132 memset(priv->vs_ie, 0, sizeof(priv->vs_ie)); 133 134 priv->wmm_required = true; 135 priv->wmm_enabled = false; 136 priv->wmm_qosinfo = 0; 137 priv->curr_bcn_buf = NULL; 138 priv->curr_bcn_size = 0; 139 priv->wps_ie = NULL; 140 priv->wps_ie_len = 0; 141 priv->ap_11n_enabled = 0; 142 memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg)); 143 144 priv->scan_block = false; 145 146 priv->csa_chan = 0; 147 priv->csa_expire_time = 0; 148 priv->del_list_idx = 0; 149 priv->hs2_enabled = false; 150 priv->check_tdls_tx = false; 151 memcpy(priv->tos_to_tid_inv, tos_to_tid_inv, MAX_NUM_TID); 152 153 mwifiex_init_11h_params(priv); 154 155 return mwifiex_add_bss_prio_tbl(priv); 156 } 157 158 /* 159 * This function allocates buffers for members of the adapter 160 * structure. 161 * 162 * The memory allocated includes scan table, command buffers, and 163 * sleep confirm command buffer. In addition, the queues are 164 * also initialized. 165 */ 166 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter) 167 { 168 int ret; 169 170 /* Allocate command buffer */ 171 ret = mwifiex_alloc_cmd_buffer(adapter); 172 if (ret) { 173 mwifiex_dbg(adapter, ERROR, 174 "%s: failed to alloc cmd buffer\n", 175 __func__); 176 return -1; 177 } 178 179 adapter->sleep_cfm = 180 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm) 181 + INTF_HEADER_LEN); 182 183 if (!adapter->sleep_cfm) { 184 mwifiex_dbg(adapter, ERROR, 185 "%s: failed to alloc sleep cfm\t" 186 " cmd buffer\n", __func__); 187 return -1; 188 } 189 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN); 190 191 return 0; 192 } 193 194 /* 195 * This function initializes the adapter structure and sets default 196 * values to the members of adapter. 197 * 198 * This also initializes the WMM related parameters in the driver private 199 * structures. 200 */ 201 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter) 202 { 203 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL; 204 205 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm)); 206 207 adapter->cmd_sent = false; 208 209 if (adapter->iface_type == MWIFIEX_SDIO) 210 adapter->data_sent = true; 211 else 212 adapter->data_sent = false; 213 214 if (adapter->iface_type == MWIFIEX_USB) 215 adapter->intf_hdr_len = 0; 216 else 217 adapter->intf_hdr_len = INTF_HEADER_LEN; 218 219 adapter->cmd_resp_received = false; 220 adapter->event_received = false; 221 adapter->data_received = false; 222 223 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 224 225 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 226 227 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM; 228 adapter->ps_state = PS_STATE_AWAKE; 229 adapter->need_to_wakeup = false; 230 231 adapter->scan_mode = HostCmd_BSS_MODE_ANY; 232 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME; 233 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME; 234 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME; 235 adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME; 236 237 adapter->scan_probes = 1; 238 239 adapter->multiple_dtim = 1; 240 241 adapter->local_listen_interval = 0; /* default value in firmware 242 will be used */ 243 244 adapter->is_deep_sleep = false; 245 246 adapter->delay_null_pkt = false; 247 adapter->delay_to_ps = 1000; 248 adapter->enhanced_ps_mode = PS_MODE_AUTO; 249 250 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by 251 default */ 252 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by 253 default */ 254 adapter->pm_wakeup_card_req = false; 255 256 adapter->pm_wakeup_fw_try = false; 257 258 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 259 260 clear_bit(MWIFIEX_IS_HS_CONFIGURED, &adapter->work_flags); 261 adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF); 262 adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF; 263 adapter->hs_cfg.gap = HS_CFG_GAP_DEF; 264 adapter->hs_activated = false; 265 266 memset(adapter->event_body, 0, sizeof(adapter->event_body)); 267 adapter->hw_dot_11n_dev_cap = 0; 268 adapter->hw_dev_mcs_support = 0; 269 adapter->sec_chan_offset = 0; 270 adapter->adhoc_11n_enabled = false; 271 272 mwifiex_wmm_init(adapter); 273 atomic_set(&adapter->tx_hw_pending, 0); 274 275 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *) 276 adapter->sleep_cfm->data; 277 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len); 278 sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH); 279 sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len); 280 sleep_cfm_buf->result = 0; 281 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM); 282 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED); 283 284 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params)); 285 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period)); 286 adapter->tx_lock_flag = false; 287 adapter->null_pkt_interval = 0; 288 adapter->fw_bands = 0; 289 adapter->config_bands = 0; 290 adapter->adhoc_start_band = 0; 291 adapter->scan_channels = NULL; 292 adapter->fw_release_number = 0; 293 adapter->fw_cap_info = 0; 294 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf)); 295 adapter->event_cause = 0; 296 adapter->region_code = 0; 297 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT; 298 adapter->adhoc_awake_period = 0; 299 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter)); 300 adapter->arp_filter_size = 0; 301 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX; 302 adapter->mfg_mode = mfg_mode; 303 adapter->key_api_major_ver = 0; 304 adapter->key_api_minor_ver = 0; 305 eth_broadcast_addr(adapter->perm_addr); 306 adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM; 307 adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM; 308 adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM; 309 adapter->active_scan_triggered = false; 310 timer_setup(&adapter->wakeup_timer, wakeup_timer_fn, 0); 311 adapter->devdump_len = 0; 312 timer_setup(&adapter->devdump_timer, fw_dump_timer_fn, 0); 313 } 314 315 /* 316 * This function sets trans_start per tx_queue 317 */ 318 void mwifiex_set_trans_start(struct net_device *dev) 319 { 320 int i; 321 322 for (i = 0; i < dev->num_tx_queues; i++) 323 txq_trans_cond_update(netdev_get_tx_queue(dev, i)); 324 325 netif_trans_update(dev); 326 } 327 328 /* 329 * This function wakes up all queues in net_device 330 */ 331 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev, 332 struct mwifiex_adapter *adapter) 333 { 334 spin_lock_bh(&adapter->queue_lock); 335 netif_tx_wake_all_queues(netdev); 336 spin_unlock_bh(&adapter->queue_lock); 337 } 338 339 /* 340 * This function stops all queues in net_device 341 */ 342 void mwifiex_stop_net_dev_queue(struct net_device *netdev, 343 struct mwifiex_adapter *adapter) 344 { 345 spin_lock_bh(&adapter->queue_lock); 346 netif_tx_stop_all_queues(netdev); 347 spin_unlock_bh(&adapter->queue_lock); 348 } 349 350 /* 351 * This function invalidates the list heads. 352 */ 353 static void mwifiex_invalidate_lists(struct mwifiex_adapter *adapter) 354 { 355 struct mwifiex_private *priv; 356 s32 i, j; 357 358 list_del(&adapter->cmd_free_q); 359 list_del(&adapter->cmd_pending_q); 360 list_del(&adapter->scan_pending_q); 361 362 for (i = 0; i < adapter->priv_num; i++) 363 list_del(&adapter->bss_prio_tbl[i].bss_prio_head); 364 365 for (i = 0; i < adapter->priv_num; i++) { 366 if (adapter->priv[i]) { 367 priv = adapter->priv[i]; 368 for (j = 0; j < MAX_NUM_TID; ++j) 369 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list); 370 list_del(&priv->tx_ba_stream_tbl_ptr); 371 list_del(&priv->rx_reorder_tbl_ptr); 372 list_del(&priv->sta_list); 373 list_del(&priv->auto_tdls_list); 374 } 375 } 376 } 377 378 /* 379 * This function performs cleanup for adapter structure. 380 * 381 * The cleanup is done recursively, by canceling all pending 382 * commands, freeing the member buffers previously allocated 383 * (command buffers, scan table buffer, sleep confirm command 384 * buffer), stopping the timers and calling the cleanup routines 385 * for every interface. 386 */ 387 static void 388 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter) 389 { 390 del_timer(&adapter->wakeup_timer); 391 del_timer_sync(&adapter->devdump_timer); 392 mwifiex_cancel_all_pending_cmd(adapter); 393 wake_up_interruptible(&adapter->cmd_wait_q.wait); 394 wake_up_interruptible(&adapter->hs_activate_wait_q); 395 } 396 397 void mwifiex_free_cmd_buffers(struct mwifiex_adapter *adapter) 398 { 399 mwifiex_invalidate_lists(adapter); 400 401 /* Free command buffer */ 402 mwifiex_dbg(adapter, INFO, "info: free cmd buffer\n"); 403 mwifiex_free_cmd_buffer(adapter); 404 405 if (adapter->sleep_cfm) 406 dev_kfree_skb_any(adapter->sleep_cfm); 407 } 408 409 /* 410 * This function intializes the lock variables and 411 * the list heads. 412 */ 413 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter) 414 { 415 struct mwifiex_private *priv; 416 s32 i, j; 417 418 spin_lock_init(&adapter->int_lock); 419 spin_lock_init(&adapter->main_proc_lock); 420 spin_lock_init(&adapter->mwifiex_cmd_lock); 421 spin_lock_init(&adapter->queue_lock); 422 for (i = 0; i < adapter->priv_num; i++) { 423 if (adapter->priv[i]) { 424 priv = adapter->priv[i]; 425 spin_lock_init(&priv->wmm.ra_list_spinlock); 426 spin_lock_init(&priv->curr_bcn_buf_lock); 427 spin_lock_init(&priv->sta_list_spinlock); 428 spin_lock_init(&priv->auto_tdls_lock); 429 } 430 } 431 432 /* Initialize cmd_free_q */ 433 INIT_LIST_HEAD(&adapter->cmd_free_q); 434 /* Initialize cmd_pending_q */ 435 INIT_LIST_HEAD(&adapter->cmd_pending_q); 436 /* Initialize scan_pending_q */ 437 INIT_LIST_HEAD(&adapter->scan_pending_q); 438 439 spin_lock_init(&adapter->cmd_free_q_lock); 440 spin_lock_init(&adapter->cmd_pending_q_lock); 441 spin_lock_init(&adapter->scan_pending_q_lock); 442 spin_lock_init(&adapter->rx_proc_lock); 443 444 skb_queue_head_init(&adapter->rx_data_q); 445 skb_queue_head_init(&adapter->tx_data_q); 446 447 for (i = 0; i < adapter->priv_num; ++i) { 448 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head); 449 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock); 450 } 451 452 for (i = 0; i < adapter->priv_num; i++) { 453 if (!adapter->priv[i]) 454 continue; 455 priv = adapter->priv[i]; 456 for (j = 0; j < MAX_NUM_TID; ++j) 457 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list); 458 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); 459 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); 460 INIT_LIST_HEAD(&priv->sta_list); 461 INIT_LIST_HEAD(&priv->auto_tdls_list); 462 skb_queue_head_init(&priv->tdls_txq); 463 skb_queue_head_init(&priv->bypass_txq); 464 465 spin_lock_init(&priv->tx_ba_stream_tbl_lock); 466 spin_lock_init(&priv->rx_reorder_tbl_lock); 467 468 spin_lock_init(&priv->ack_status_lock); 469 idr_init(&priv->ack_status_frames); 470 } 471 472 return 0; 473 } 474 475 /* 476 * This function initializes the firmware. 477 * 478 * The following operations are performed sequentially - 479 * - Allocate adapter structure 480 * - Initialize the adapter structure 481 * - Initialize the private structure 482 * - Add BSS priority tables to the adapter structure 483 * - For each interface, send the init commands to firmware 484 * - Send the first command in command pending queue, if available 485 */ 486 int mwifiex_init_fw(struct mwifiex_adapter *adapter) 487 { 488 int ret; 489 struct mwifiex_private *priv; 490 u8 i, first_sta = true; 491 int is_cmd_pend_q_empty; 492 493 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 494 495 /* Allocate memory for member of adapter structure */ 496 ret = mwifiex_allocate_adapter(adapter); 497 if (ret) 498 return -1; 499 500 /* Initialize adapter structure */ 501 mwifiex_init_adapter(adapter); 502 503 for (i = 0; i < adapter->priv_num; i++) { 504 if (adapter->priv[i]) { 505 priv = adapter->priv[i]; 506 507 /* Initialize private structure */ 508 ret = mwifiex_init_priv(priv); 509 if (ret) 510 return -1; 511 } 512 } 513 if (adapter->mfg_mode) { 514 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 515 ret = -EINPROGRESS; 516 } else { 517 for (i = 0; i < adapter->priv_num; i++) { 518 if (adapter->priv[i]) { 519 ret = mwifiex_sta_init_cmd(adapter->priv[i], 520 first_sta, true); 521 if (ret == -1) 522 return -1; 523 524 first_sta = false; 525 } 526 527 528 529 } 530 } 531 532 spin_lock_bh(&adapter->cmd_pending_q_lock); 533 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); 534 spin_unlock_bh(&adapter->cmd_pending_q_lock); 535 if (!is_cmd_pend_q_empty) { 536 /* Send the first command in queue and return */ 537 if (mwifiex_main_process(adapter) != -1) 538 ret = -EINPROGRESS; 539 } else { 540 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 541 } 542 543 return ret; 544 } 545 546 /* 547 * This function deletes the BSS priority tables. 548 * 549 * The function traverses through all the allocated BSS priority nodes 550 * in every BSS priority table and frees them. 551 */ 552 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv) 553 { 554 int i; 555 struct mwifiex_adapter *adapter = priv->adapter; 556 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node; 557 struct list_head *head; 558 spinlock_t *lock; /* bss priority lock */ 559 560 for (i = 0; i < adapter->priv_num; ++i) { 561 head = &adapter->bss_prio_tbl[i].bss_prio_head; 562 lock = &adapter->bss_prio_tbl[i].bss_prio_lock; 563 mwifiex_dbg(adapter, INFO, 564 "info: delete BSS priority table,\t" 565 "bss_type = %d, bss_num = %d, i = %d,\t" 566 "head = %p\n", 567 priv->bss_type, priv->bss_num, i, head); 568 569 { 570 spin_lock_bh(lock); 571 list_for_each_entry_safe(bssprio_node, tmp_node, head, 572 list) { 573 if (bssprio_node->priv == priv) { 574 mwifiex_dbg(adapter, INFO, 575 "info: Delete\t" 576 "node %p, next = %p\n", 577 bssprio_node, tmp_node); 578 list_del(&bssprio_node->list); 579 kfree(bssprio_node); 580 } 581 } 582 spin_unlock_bh(lock); 583 } 584 } 585 } 586 587 /* 588 * This function frees the private structure, including cleans 589 * up the TX and RX queues and frees the BSS priority tables. 590 */ 591 void mwifiex_free_priv(struct mwifiex_private *priv) 592 { 593 mwifiex_clean_txrx(priv); 594 mwifiex_delete_bss_prio_tbl(priv); 595 mwifiex_free_curr_bcn(priv); 596 } 597 598 /* 599 * This function is used to shutdown the driver. 600 * 601 * The following operations are performed sequentially - 602 * - Check if already shut down 603 * - Make sure the main process has stopped 604 * - Clean up the Tx and Rx queues 605 * - Delete BSS priority tables 606 * - Free the adapter 607 * - Notify completion 608 */ 609 void 610 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter) 611 { 612 struct mwifiex_private *priv; 613 s32 i; 614 struct sk_buff *skb; 615 616 /* mwifiex already shutdown */ 617 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) 618 return; 619 620 /* cancel current command */ 621 if (adapter->curr_cmd) { 622 mwifiex_dbg(adapter, WARN, 623 "curr_cmd is still in processing\n"); 624 del_timer_sync(&adapter->cmd_timer); 625 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); 626 adapter->curr_cmd = NULL; 627 } 628 629 /* shut down mwifiex */ 630 mwifiex_dbg(adapter, MSG, 631 "info: shutdown mwifiex...\n"); 632 633 /* Clean up Tx/Rx queues and delete BSS priority table */ 634 for (i = 0; i < adapter->priv_num; i++) { 635 if (adapter->priv[i]) { 636 priv = adapter->priv[i]; 637 638 mwifiex_clean_auto_tdls(priv); 639 mwifiex_abort_cac(priv); 640 mwifiex_free_priv(priv); 641 } 642 } 643 644 atomic_set(&adapter->tx_queued, 0); 645 while ((skb = skb_dequeue(&adapter->tx_data_q))) 646 mwifiex_write_data_complete(adapter, skb, 0, 0); 647 648 spin_lock_bh(&adapter->rx_proc_lock); 649 650 while ((skb = skb_dequeue(&adapter->rx_data_q))) { 651 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb); 652 653 atomic_dec(&adapter->rx_pending); 654 priv = adapter->priv[rx_info->bss_num]; 655 if (priv) 656 priv->stats.rx_dropped++; 657 658 dev_kfree_skb_any(skb); 659 } 660 661 spin_unlock_bh(&adapter->rx_proc_lock); 662 663 mwifiex_adapter_cleanup(adapter); 664 665 adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY; 666 } 667 668 /* 669 * This function downloads the firmware to the card. 670 * 671 * The actual download is preceded by two sanity checks - 672 * - Check if firmware is already running 673 * - Check if the interface is the winner to download the firmware 674 * 675 * ...and followed by another - 676 * - Check if the firmware is downloaded successfully 677 * 678 * After download is successfully completed, the host interrupts are enabled. 679 */ 680 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter, 681 struct mwifiex_fw_image *pmfw) 682 { 683 int ret; 684 u32 poll_num = 1; 685 686 /* check if firmware is already running */ 687 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 688 if (!ret) { 689 mwifiex_dbg(adapter, MSG, 690 "WLAN FW already running! Skip FW dnld\n"); 691 return 0; 692 } 693 694 /* check if we are the winner for downloading FW */ 695 if (adapter->if_ops.check_winner_status) { 696 adapter->winner = 0; 697 ret = adapter->if_ops.check_winner_status(adapter); 698 699 poll_num = MAX_FIRMWARE_POLL_TRIES; 700 if (ret) { 701 mwifiex_dbg(adapter, MSG, 702 "WLAN read winner status failed!\n"); 703 return ret; 704 } 705 706 if (!adapter->winner) { 707 mwifiex_dbg(adapter, MSG, 708 "WLAN is not the winner! Skip FW dnld\n"); 709 goto poll_fw; 710 } 711 } 712 713 if (pmfw) { 714 /* Download firmware with helper */ 715 ret = adapter->if_ops.prog_fw(adapter, pmfw); 716 if (ret) { 717 mwifiex_dbg(adapter, ERROR, 718 "prog_fw failed ret=%#x\n", ret); 719 return ret; 720 } 721 } 722 723 poll_fw: 724 /* Check if the firmware is downloaded successfully or not */ 725 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 726 if (ret) 727 mwifiex_dbg(adapter, ERROR, 728 "FW failed to be active in time\n"); 729 730 return ret; 731 } 732 EXPORT_SYMBOL_GPL(mwifiex_dnld_fw); 733