---
drivers/net/wireless/nxp/nxpwifi/init.c | 694 ++++++++++++++++++++++++
1 file changed, 694 insertions(+)
create mode 100644 drivers/net/wireless/nxp/nxpwifi/init.c
diff --git a/drivers/net/wireless/nxp/nxpwifi/init.c b/drivers/net/wireless/nxp/nxpwifi/init.c
new file mode 100644
index 000000000000..05631f65aece
--- /dev/null
+++ b/drivers/net/wireless/nxp/nxpwifi/init.c
@@ -0,0 +1,694 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * NXP Wireless LAN device driver: HW/FW Initialization
+ *
+ * Copyright 2011-2024 NXP
+ */
+
+#include "decl.h"
+#include "cfg.h"
+#include "util.h"
+#include "fw.h"
+#include "main.h"
+#include "cmdevt.h"
+#include "wmm.h"
+#include "11n.h"
+
+/* This function adds a BSS priority table to the table list.
+ *
+ * The function allocates a new BSS priority table node and adds it to
+ * the end of BSS priority table list, kept in driver memory.
+ */
+static int nxpwifi_add_bss_prio_tbl(struct nxpwifi_private *priv)
+{
+ struct nxpwifi_adapter *adapter = priv->adapter;
+ struct nxpwifi_bss_prio_node *bss_prio;
+ struct nxpwifi_bss_prio_tbl *tbl = adapter->bss_prio_tbl;
+
+ bss_prio = kzalloc(sizeof(*bss_prio), GFP_KERNEL);
+ if (!bss_prio)
+ return -ENOMEM;
+
+ bss_prio->priv = priv;
+ INIT_LIST_HEAD(&bss_prio->list);
+
+ spin_lock_bh(&tbl[priv->bss_priority].bss_prio_lock);
+ list_add_tail(&bss_prio->list, &tbl[priv->bss_priority].bss_prio_head);
+ spin_unlock_bh(&tbl[priv->bss_priority].bss_prio_lock);
+
+ return 0;
+}
+
+static void wakeup_timer_fn(struct timer_list *t)
+{
+ struct nxpwifi_adapter *adapter = from_timer(adapter, t, wakeup_timer);
+
+ nxpwifi_dbg(adapter, ERROR, "Firmware wakeup failed\n");
+ adapter->hw_status = NXPWIFI_HW_STATUS_RESET;
+ nxpwifi_cancel_all_pending_cmd(adapter);
+
+ if (adapter->if_ops.card_reset)
+ adapter->if_ops.card_reset(adapter);
+}
+
+/* This function initializes the private structure and sets default
+ * values to the members.
+ *
+ * Additionally, it also initializes all the locks and sets up all the
+ * lists.
+ */
+int nxpwifi_init_priv(struct nxpwifi_private *priv)
+{
+ u32 i;
+
+ priv->media_connected = false;
+ eth_broadcast_addr(priv->curr_addr);
+ priv->port_open = false;
+ priv->usb_port = NXPWIFI_USB_EP_DATA;
+ priv->pkt_tx_ctrl = 0;
+ priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
+ priv->data_rate = 0; /* Initially indicate the rate as auto */
+ priv->is_data_rate_auto = true;
+ priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR;
+ priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR;
+
+ priv->auth_flag = 0;
+ priv->auth_alg = WLAN_AUTH_NONE;
+
+ priv->sec_info.wep_enabled = 0;
+ priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
+ priv->sec_info.encryption_mode = 0;
+ for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++)
+ memset(&priv->wep_key[i], 0, sizeof(struct nxpwifi_wep_key));
+ priv->wep_key_curr_index = 0;
+ priv->curr_pkt_filter = HOST_ACT_MAC_DYNAMIC_BW_ENABLE |
+ HOST_ACT_MAC_RX_ON | HOST_ACT_MAC_TX_ON |
+ HOST_ACT_MAC_ETHERNETII_ENABLE;
+
+ priv->beacon_period = 100; /* beacon interval */
+ priv->attempted_bss_desc = NULL;
+ memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params));
+ priv->listen_interval = NXPWIFI_DEFAULT_LISTEN_INTERVAL;
+
+ memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid));
+ memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid));
+ memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf));
+ priv->assoc_rsp_size = 0;
+ priv->atim_window = 0;
+ priv->tx_power_level = 0;
+ priv->max_tx_power_level = 0;
+ priv->min_tx_power_level = 0;
+ priv->tx_ant = 0;
+ priv->rx_ant = 0;
+ priv->tx_rate = 0;
+ priv->rxpd_htinfo = 0;
+ priv->rxpd_rate = 0;
+ priv->rate_bitmap = 0;
+ priv->data_rssi_last = 0;
+ priv->data_rssi_avg = 0;
+ priv->data_nf_avg = 0;
+ priv->data_nf_last = 0;
+ priv->bcn_rssi_last = 0;
+ priv->bcn_rssi_avg = 0;
+ priv->bcn_nf_avg = 0;
+ priv->bcn_nf_last = 0;
+ memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie));
+ memset(&priv->aes_key, 0, sizeof(priv->aes_key));
+ priv->wpa_ie_len = 0;
+ priv->wpa_is_gtk_set = false;
+
+ memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf));
+ priv->assoc_tlv_buf_len = 0;
+ memset(&priv->wps, 0, sizeof(priv->wps));
+ memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf));
+ priv->gen_ie_buf_len = 0;
+ memset(priv->vs_ie, 0, sizeof(priv->vs_ie));
+
+ priv->wmm_required = true;
+ priv->wmm_enabled = false;
+ priv->wmm_qosinfo = 0;
+ priv->curr_bcn_buf = NULL;
+ priv->curr_bcn_size = 0;
+ priv->wps_ie = NULL;
+ priv->wps_ie_len = 0;
+ priv->ap_11n_enabled = 0;
+ memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg));
+
+ priv->scan_block = false;
+
+ priv->csa_chan = 0;
+ priv->csa_expire_time = 0;
+ priv->del_list_idx = 0;
+ priv->hs2_enabled = false;
+ memcpy(priv->tos_to_tid_inv, tos_to_tid_inv, MAX_NUM_TID);
+
+ nxpwifi_init_11h_params(priv);
+
+ return nxpwifi_add_bss_prio_tbl(priv);
+}
+
+/* This function allocates buffers for members of the adapter
+ * structure.
+ *
+ * The memory allocated includes scan table, command buffers, and
+ * sleep confirm command buffer. In addition, the queues are
+ * also initialized.
+ */
+static int nxpwifi_allocate_adapter(struct nxpwifi_adapter *adapter)
+{
+ int ret;
+
+ /* Allocate command buffer */
+ ret = nxpwifi_alloc_cmd_buffer(adapter);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "%s: failed to alloc cmd buffer\n",
+ __func__);
+ return ret;
+ }
+
+ adapter->sleep_cfm =
+ dev_alloc_skb(sizeof(struct nxpwifi_opt_sleep_confirm)
+ + INTF_HEADER_LEN);
+
+ if (!adapter->sleep_cfm) {
+ nxpwifi_dbg(adapter, ERROR,
+ "%s: failed to alloc sleep cfm\t"
+ " cmd buffer\n", __func__);
+ return -ENOMEM;
+ }
+ skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN);
+
+ return 0;
+}
+
+/* This function initializes the adapter structure and sets default
+ * values to the members of adapter.
+ *
+ * This also initializes the WMM related parameters in the driver private
+ * structures.
+ */
+static void nxpwifi_init_adapter(struct nxpwifi_adapter *adapter)
+{
+ struct nxpwifi_opt_sleep_confirm *sleep_cfm_buf = NULL;
+
+ skb_put(adapter->sleep_cfm, sizeof(struct nxpwifi_opt_sleep_confirm));
+
+ adapter->cmd_sent = false;
+ adapter->data_sent = true;
+
+ adapter->intf_hdr_len = INTF_HEADER_LEN;
+
+ adapter->cmd_resp_received = false;
+ adapter->event_received = false;
+ adapter->data_received = false;
+ adapter->assoc_resp_received = false;
+ adapter->priv_link_lost = NULL;
+ adapter->host_mlme_link_lost = false;
+
+ clear_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags);
+
+ adapter->hw_status = NXPWIFI_HW_STATUS_INITIALIZING;
+
+ adapter->ps_mode = NXPWIFI_802_11_POWER_MODE_CAM;
+ adapter->ps_state = PS_STATE_AWAKE;
+ adapter->need_to_wakeup = false;
+
+ adapter->scan_mode = HOST_BSS_MODE_ANY;
+ adapter->specific_scan_time = NXPWIFI_SPECIFIC_SCAN_CHAN_TIME;
+ adapter->active_scan_time = NXPWIFI_ACTIVE_SCAN_CHAN_TIME;
+ adapter->passive_scan_time = NXPWIFI_PASSIVE_SCAN_CHAN_TIME;
+ adapter->scan_chan_gap_time = NXPWIFI_DEF_SCAN_CHAN_GAP_TIME;
+
+ adapter->scan_probes = 1;
+
+ adapter->multiple_dtim = 1;
+
+ /* default value in firmware will be used */
+ adapter->local_listen_interval = 0;
+
+ adapter->is_deep_sleep = false;
+
+ adapter->delay_null_pkt = false;
+ adapter->delay_to_ps = 1000;
+ adapter->enhanced_ps_mode = PS_MODE_AUTO;
+
+ /* Disable NULL Pkg generation by default */
+ adapter->gen_null_pkt = false;
+ /* Disable pps/uapsd mode by default */
+ adapter->pps_uapsd_mode = false;
+ adapter->pm_wakeup_card_req = false;
+
+ adapter->pm_wakeup_fw_try = false;
+
+ adapter->curr_tx_buf_size = NXPWIFI_TX_DATA_BUF_SIZE_2K;
+
+ clear_bit(NXPWIFI_IS_HS_CONFIGURED, &adapter->work_flags);
+ adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF);
+ adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF;
+ adapter->hs_cfg.gap = HS_CFG_GAP_DEF;
+ adapter->hs_activated = false;
+
+ memset(adapter->event_body, 0, sizeof(adapter->event_body));
+ adapter->hw_dot_11n_dev_cap = 0;
+ adapter->hw_dev_mcs_support = 0;
+ adapter->sec_chan_offset = 0;
+
+ nxpwifi_wmm_init(adapter);
+ atomic_set(&adapter->tx_hw_pending, 0);
+
+ sleep_cfm_buf = (struct nxpwifi_opt_sleep_confirm *)
+ adapter->sleep_cfm->data;
+ memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len);
+ sleep_cfm_buf->command = cpu_to_le16(HOST_CMD_802_11_PS_MODE_ENH);
+ sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len);
+ sleep_cfm_buf->result = 0;
+ sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM);
+ sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED);
+
+ memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period));
+ adapter->tx_lock_flag = false;
+ adapter->null_pkt_interval = 0;
+ adapter->fw_bands = 0;
+ adapter->config_bands = 0;
+ adapter->fw_release_number = 0;
+ adapter->fw_cap_info = 0;
+ memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf));
+ adapter->event_cause = 0;
+ adapter->region_code = 0;
+ adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT;
+ memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter));
+ adapter->arp_filter_size = 0;
+ adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX;
+ adapter->key_api_major_ver = 0;
+ adapter->key_api_minor_ver = 0;
+ eth_broadcast_addr(adapter->perm_addr);
+ adapter->iface_limit.sta_intf = NXPWIFI_MAX_STA_NUM;
+ adapter->iface_limit.uap_intf = NXPWIFI_MAX_UAP_NUM;
+ adapter->active_scan_triggered = false;
+ timer_setup(&adapter->wakeup_timer, wakeup_timer_fn, 0);
+ adapter->devdump_len = 0;
+ memset(&adapter->vdll_ctrl, 0, sizeof(adapter->vdll_ctrl));
+ adapter->vdll_ctrl.skb = dev_alloc_skb(NXPWIFI_SIZE_OF_CMD_BUFFER);
+}
+
+/* This function sets trans_start per tx_queue
+ */
+void nxpwifi_set_trans_start(struct net_device *dev)
+{
+ int i;
+
+ for (i = 0; i < dev->num_tx_queues; i++)
+ txq_trans_cond_update(netdev_get_tx_queue(dev, i));
+
+ netif_trans_update(dev);
+}
+
+/* This function wakes up all queues in net_device
+ */
+void nxpwifi_wake_up_net_dev_queue(struct net_device *netdev,
+ struct nxpwifi_adapter *adapter)
+{
+ spin_lock_bh(&adapter->queue_lock);
+ netif_tx_wake_all_queues(netdev);
+ spin_unlock_bh(&adapter->queue_lock);
+}
+
+/* This function stops all queues in net_device
+ */
+void nxpwifi_stop_net_dev_queue(struct net_device *netdev,
+ struct nxpwifi_adapter *adapter)
+{
+ spin_lock_bh(&adapter->queue_lock);
+ netif_tx_stop_all_queues(netdev);
+ spin_unlock_bh(&adapter->queue_lock);
+}
+
+/* This function invalidates the list heads.
+ */
+static void nxpwifi_invalidate_lists(struct nxpwifi_adapter *adapter)
+{
+ struct nxpwifi_private *priv;
+ s32 i, j;
+
+ list_del(&adapter->cmd_free_q);
+ list_del(&adapter->cmd_pending_q);
+ list_del(&adapter->scan_pending_q);
+
+ for (i = 0; i < adapter->priv_num; i++)
+ list_del(&adapter->bss_prio_tbl[i].bss_prio_head);
+
+ for (i = 0; i < adapter->priv_num; i++) {
+ if (adapter->priv[i]) {
+ priv = adapter->priv[i];
+ for (j = 0; j < MAX_NUM_TID; ++j)
+ list_del(&priv->wmm.tid_tbl_ptr[j].ra_list);
+ list_del(&priv->tx_ba_stream_tbl_ptr);
+ list_del(&priv->rx_reorder_tbl_ptr);
+ list_del(&priv->sta_list);
+ }
+ }
+}
+
+/* This function performs cleanup for adapter structure.
+ *
+ * The cleanup is done recursively, by canceling all pending
+ * commands, freeing the member buffers previously allocated
+ * (command buffers, scan table buffer, sleep confirm command
+ * buffer), stopping the timers and calling the cleanup routines
+ * for every interface.
+ */
+static void
+nxpwifi_adapter_cleanup(struct nxpwifi_adapter *adapter)
+{
+ del_timer(&adapter->wakeup_timer);
+ nxpwifi_cancel_all_pending_cmd(adapter);
+ wake_up_interruptible(&adapter->cmd_wait_q.wait);
+ wake_up_interruptible(&adapter->hs_activate_wait_q);
+ if (adapter->vdll_ctrl.vdll_mem) {
+ vfree(adapter->vdll_ctrl.vdll_mem);
+ adapter->vdll_ctrl.vdll_mem = NULL;
+ adapter->vdll_ctrl.vdll_len = 0;
+ }
+ if (adapter->vdll_ctrl.skb) {
+ dev_kfree_skb_any(adapter->vdll_ctrl.skb);
+ adapter->vdll_ctrl.skb = NULL;
+ }
+}
+
+void nxpwifi_free_cmd_buffers(struct nxpwifi_adapter *adapter)
+{
+ nxpwifi_invalidate_lists(adapter);
+
+ /* Free command buffer */
+ nxpwifi_dbg(adapter, INFO, "info: free cmd buffer\n");
+ nxpwifi_free_cmd_buffer(adapter);
+
+ if (adapter->sleep_cfm)
+ dev_kfree_skb_any(adapter->sleep_cfm);
+}
+
+/* This function intializes the lock variables and
+ * the list heads.
+ */
+void nxpwifi_init_lock_list(struct nxpwifi_adapter *adapter)
+{
+ struct nxpwifi_private *priv;
+ s32 i, j;
+
+ spin_lock_init(&adapter->int_lock);
+ spin_lock_init(&adapter->main_proc_lock);
+ spin_lock_init(&adapter->nxpwifi_cmd_lock);
+ spin_lock_init(&adapter->queue_lock);
+ for (i = 0; i < adapter->priv_num; i++) {
+ if (adapter->priv[i]) {
+ priv = adapter->priv[i];
+ spin_lock_init(&priv->wmm.ra_list_spinlock);
+ spin_lock_init(&priv->curr_bcn_buf_lock);
+ spin_lock_init(&priv->sta_list_spinlock);
+ }
+ }
+
+ /* Initialize cmd_free_q */
+ INIT_LIST_HEAD(&adapter->cmd_free_q);
+ /* Initialize cmd_pending_q */
+ INIT_LIST_HEAD(&adapter->cmd_pending_q);
+ /* Initialize scan_pending_q */
+ INIT_LIST_HEAD(&adapter->scan_pending_q);
+
+ spin_lock_init(&adapter->cmd_free_q_lock);
+ spin_lock_init(&adapter->cmd_pending_q_lock);
+ spin_lock_init(&adapter->scan_pending_q_lock);
+
+ skb_queue_head_init(&adapter->rx_mlme_q);
+ skb_queue_head_init(&adapter->rx_data_q);
+ skb_queue_head_init(&adapter->tx_data_q);
+
+ for (i = 0; i < adapter->priv_num; ++i) {
+ INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head);
+ spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock);
+ }
+
+ for (i = 0; i < adapter->priv_num; i++) {
+ if (!adapter->priv[i])
+ continue;
+ priv = adapter->priv[i];
+ for (j = 0; j < MAX_NUM_TID; ++j)
+ INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list);
+ INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
+ INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr);
+ INIT_LIST_HEAD(&priv->sta_list);
+ skb_queue_head_init(&priv->bypass_txq);
+
+ spin_lock_init(&priv->tx_ba_stream_tbl_lock);
+ spin_lock_init(&priv->rx_reorder_tbl_lock);
+
+ spin_lock_init(&priv->ack_status_lock);
+ idr_init(&priv->ack_status_frames);
+ }
+}
+
+/* This function initializes the firmware.
+ *
+ * The following operations are performed sequentially -
+ * - Allocate adapter structure
+ * - Initialize the adapter structure
+ * - Initialize the private structure
+ * - Add BSS priority tables to the adapter structure
+ * - For each interface, send the init commands to firmware
+ * - Send the first command in command pending queue, if available
+ */
+int nxpwifi_init_fw(struct nxpwifi_adapter *adapter)
+{
+ int ret;
+ struct nxpwifi_private *priv;
+ u8 i;
+ bool first_sta = true;
+ int is_cmd_pend_q_empty;
+
+ adapter->hw_status = NXPWIFI_HW_STATUS_INITIALIZING;
+
+ /* Allocate memory for member of adapter structure */
+ ret = nxpwifi_allocate_adapter(adapter);
+ if (ret)
+ return ret;
+
+ /* Initialize adapter structure */
+ nxpwifi_init_adapter(adapter);
+
+ for (i = 0; i < adapter->priv_num; i++) {
+ if (adapter->priv[i]) {
+ priv = adapter->priv[i];
+
+ /* Initialize private structure */
+ ret = nxpwifi_init_priv(priv);
+ if (ret)
+ return ret;
+ }
+ }
+
+ for (i = 0; i < adapter->priv_num; i++) {
+ if (adapter->priv[i]) {
+ ret = nxpwifi_sta_init_cmd(adapter->priv[i],
+ first_sta, true);
+ if (ret && ret != -EINPROGRESS)
+ return ret;
+
+ first_sta = false;
+ }
+ }
+
+ spin_lock_bh(&adapter->cmd_pending_q_lock);
+ is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
+ spin_unlock_bh(&adapter->cmd_pending_q_lock);
+ if (!is_cmd_pend_q_empty)
+ /* Send the first command in queue and return */
+ nxpwifi_main_process(adapter);
+ else
+ adapter->hw_status = NXPWIFI_HW_STATUS_READY;
+
+ return ret;
+}
+
+/* This function deletes the BSS priority tables.
+ *
+ * The function traverses through all the allocated BSS priority nodes
+ * in every BSS priority table and frees them.
+ */
+static void nxpwifi_delete_bss_prio_tbl(struct nxpwifi_private *priv)
+{
+ int i;
+ struct nxpwifi_adapter *adapter = priv->adapter;
+ struct nxpwifi_bss_prio_node *bssprio_node, *tmp_node;
+ struct list_head *head;
+ spinlock_t *lock; /* bss priority lock */
+
+ for (i = 0; i < adapter->priv_num; ++i) {
+ head = &adapter->bss_prio_tbl[i].bss_prio_head;
+ lock = &adapter->bss_prio_tbl[i].bss_prio_lock;
+ nxpwifi_dbg(adapter, INFO,
+ "info: delete BSS priority table,\t"
+ "bss_type = %d, bss_num = %d, i = %d,\t"
+ "head = %p\n",
+ priv->bss_type, priv->bss_num, i, head);
+
+ {
+ spin_lock_bh(lock);
+ list_for_each_entry_safe(bssprio_node, tmp_node, head,
+ list) {
+ if (bssprio_node->priv == priv) {
+ nxpwifi_dbg(adapter, INFO,
+ "info: Delete\t"
+ "node %p, next = %p\n",
+ bssprio_node, tmp_node);
+ list_del(&bssprio_node->list);
+ kfree(bssprio_node);
+ }
+ }
+ spin_unlock_bh(lock);
+ }
+ }
+}
+
+/* This function frees the private structure, including cleans
+ * up the TX and RX queues and frees the BSS priority tables.
+ */
+void nxpwifi_free_priv(struct nxpwifi_private *priv)
+{
+ nxpwifi_clean_txrx(priv);
+ nxpwifi_delete_bss_prio_tbl(priv);
+ nxpwifi_free_curr_bcn(priv);
+}
+
+/* This function is used to shutdown the driver.
+ *
+ * The following operations are performed sequentially -
+ * - Check if already shut down
+ * - Make sure the main process has stopped
+ * - Clean up the Tx and Rx queues
+ * - Delete BSS priority tables
+ * - Free the adapter
+ * - Notify completion
+ */
+void
+nxpwifi_shutdown_drv(struct nxpwifi_adapter *adapter)
+{
+ struct nxpwifi_private *priv;
+ s32 i;
+ struct sk_buff *skb;
+
+ /* nxpwifi already shutdown */
+ if (adapter->hw_status == NXPWIFI_HW_STATUS_NOT_READY)
+ return;
+
+ /* cancel current command */
+ if (adapter->curr_cmd) {
+ nxpwifi_dbg(adapter, WARN,
+ "curr_cmd is still in processing\n");
+ del_timer_sync(&adapter->cmd_timer);
+ nxpwifi_recycle_cmd_node(adapter, adapter->curr_cmd);
+ adapter->curr_cmd = NULL;
+ }
+
+ /* shut down nxpwifi */
+ nxpwifi_dbg(adapter, MSG,
+ "info: shutdown nxpwifi...\n");
+
+ /* Clean up Tx/Rx queues and delete BSS priority table */
+ for (i = 0; i < adapter->priv_num; i++) {
+ if (adapter->priv[i]) {
+ priv = adapter->priv[i];
+
+ nxpwifi_abort_cac(priv);
+ nxpwifi_free_priv(priv);
+ }
+ }
+
+ atomic_set(&adapter->tx_queued, 0);
+ while ((skb = skb_dequeue(&adapter->tx_data_q)))
+ nxpwifi_write_data_complete(adapter, skb, 0, 0);
+
+ tasklet_disable(&adapter->rx_task);
+
+ while ((skb = skb_dequeue(&adapter->rx_mlme_q)))
+ dev_kfree_skb_any(skb);
+
+ while ((skb = skb_dequeue(&adapter->rx_data_q))) {
+ struct nxpwifi_rxinfo *rx_info = NXPWIFI_SKB_RXCB(skb);
+
+ priv = adapter->priv[rx_info->bss_num];
+ if (priv)
+ priv->stats.rx_dropped++;
+
+ dev_kfree_skb_any(skb);
+ }
+
+ nxpwifi_adapter_cleanup(adapter);
+
+ adapter->hw_status = NXPWIFI_HW_STATUS_NOT_READY;
+}
+
+/* This function downloads the firmware to the card.
+ *
+ * The actual download is preceded by two sanity checks -
+ * - Check if firmware is already running
+ * - Check if the interface is the winner to download the firmware
+ *
+ * ...and followed by another -
+ * - Check if the firmware is downloaded successfully
+ *
+ * After download is successfully completed, the host interrupts are enabled.
+ */
+int nxpwifi_dnld_fw(struct nxpwifi_adapter *adapter,
+ struct nxpwifi_fw_image *pmfw)
+{
+ int ret;
+ u32 poll_num = 1;
+
+ /* check if firmware is already running */
+ ret = adapter->if_ops.check_fw_status(adapter, poll_num);
+ if (!ret) {
+ nxpwifi_dbg(adapter, MSG,
+ "WLAN FW already running! Skip FW dnld\n");
+ return 0;
+ }
+
+ /* check if we are the winner for downloading FW */
+ if (adapter->if_ops.check_winner_status) {
+ adapter->winner = 0;
+ ret = adapter->if_ops.check_winner_status(adapter);
+
+ poll_num = MAX_FIRMWARE_POLL_TRIES;
+ if (ret) {
+ nxpwifi_dbg(adapter, MSG,
+ "WLAN read winner status failed!\n");
+ return ret;
+ }
+
+ if (!adapter->winner) {
+ nxpwifi_dbg(adapter, MSG,
+ "WLAN is not the winner! Skip FW dnld\n");
+ goto poll_fw;
+ }
+ }
+
+ if (pmfw) {
+ /* Download firmware with helper */
+ ret = adapter->if_ops.prog_fw(adapter, pmfw);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "prog_fw failed ret=%#x\n", ret);
+ return ret;
+ }
+ }
+
+poll_fw:
+ /* Check if the firmware is downloaded successfully or not */
+ ret = adapter->if_ops.check_fw_status(adapter, poll_num);
+ if (ret)
+ nxpwifi_dbg(adapter, ERROR,
+ "FW failed to be active in time\n");
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(nxpwifi_dnld_fw);
--
2.34.1
