723 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/*3 * NXP Wireless LAN device driver: HW/FW Initialization4 *5 * Copyright 2011-2020 NXP6 */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 to20 * the end of BSS priority table list, kept in driver memory.21 */22static 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 42static 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 54static 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 default64 * values to the members.65 *66 * Additionally, it also initializes all the locks and sets up all the67 * lists.68 */69int 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 adapter164 * structure.165 *166 * The memory allocated includes scan table, command buffers, and167 * sleep confirm command buffer. In addition, the queues are168 * also initialized.169 */170static 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 default200 * values to the members of adapter.201 *202 * This also initializes the WMM related parameters in the driver private203 * structures.204 */205static 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 else216 adapter->data_sent = false;217 218 if (adapter->iface_type == MWIFIEX_USB)219 adapter->intf_hdr_len = 0;220 else221 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 firmware249 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 by258 default */259 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by260 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_queue322 */323void 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_device335 */336void 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_device346 */347void 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 */358static 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 pending385 * commands, freeing the member buffers previously allocated386 * (command buffers, scan table buffer, sleep confirm command387 * buffer), stopping the timers and calling the cleanup routines388 * for every interface.389 */390static void391mwifiex_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 400void 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 and414 * the list heads.415 */416int 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 structure479 * - Initialize the adapter structure480 * - Initialize the private structure481 * - Add BSS priority tables to the adapter structure482 * - For each interface, send the init commands to firmware483 * - Send the first command in command pending queue, if available484 */485int 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 nodes542 * in every BSS priority table and frees them.543 */544static 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 cleans581 * up the TX and RX queues and frees the BSS priority tables.582 */583void 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 down595 * - Make sure the main process has stopped596 * - Clean up the Tx and Rx queues597 * - Delete BSS priority tables598 * - Free the adapter599 * - Notify completion600 */601void602mwifiex_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 running663 * - Check if the interface is the winner to download the firmware664 *665 * ...and followed by another -666 * - Check if the firmware is downloaded successfully667 *668 * After download is successfully completed, the host interrupts are enabled.669 */670int 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 713poll_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}722EXPORT_SYMBOL_GPL(mwifiex_dnld_fw);723