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Date: Fri, 21 Jun 2024 15:51:48 +0800
From: David Lin <yu-hao.lin@....com>
To: linux-wireless@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
briannorris@...omium.org,
kvalo@...nel.org,
francesco@...cini.it,
tsung-hsien.hsieh@....com,
David Lin <yu-hao.lin@....com>
Subject: [PATCH 23/43] wifi: nxpwifi: add main.c
Signed-off-by: David Lin <yu-hao.lin@....com>
---
drivers/net/wireless/nxp/nxpwifi/main.c | 1726 +++++++++++++++++++++++
1 file changed, 1726 insertions(+)
create mode 100644 drivers/net/wireless/nxp/nxpwifi/main.c
diff --git a/drivers/net/wireless/nxp/nxpwifi/main.c b/drivers/net/wireless/nxp/nxpwifi/main.c
new file mode 100644
index 000000000000..54d224bdb315
--- /dev/null
+++ b/drivers/net/wireless/nxp/nxpwifi/main.c
@@ -0,0 +1,1726 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * NXP Wireless LAN device driver: major functions
+ *
+ * Copyright 2011-2024 NXP
+ */
+
+#include <linux/suspend.h>
+
+#include "main.h"
+#include "cmdevt.h"
+#include "wmm.h"
+#include "cfg80211.h"
+#include "11n.h"
+
+#define VERSION "1.0"
+
+static unsigned int debug_mask = NXPWIFI_DEFAULT_DEBUG_MASK;
+
+char driver_version[] = "nxpwifi " VERSION " (%s) ";
+
+const u16 nxpwifi_1d_to_wmm_queue[8] = { 1, 0, 0, 1, 2, 2, 3, 3 };
+
+/* This function registers the device and performs all the necessary
+ * initializations.
+ *
+ * The following initialization operations are performed -
+ * - Allocate adapter structure
+ * - Save interface specific operations table in adapter
+ * - Call interface specific initialization routine
+ * - Allocate private structures
+ * - Set default adapter structure parameters
+ * - Initialize locks
+ *
+ * In case of any errors during inittialization, this function also ensures
+ * proper cleanup before exiting.
+ */
+static int nxpwifi_register(void *card, struct device *dev,
+ struct nxpwifi_if_ops *if_ops, void **padapter)
+{
+ struct nxpwifi_adapter *adapter;
+ int i;
+
+ adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
+ if (!adapter)
+ return -ENOMEM;
+
+ *padapter = adapter;
+ adapter->dev = dev;
+ adapter->card = card;
+
+ /* Save interface specific operations in adapter */
+ memmove(&adapter->if_ops, if_ops, sizeof(struct nxpwifi_if_ops));
+ adapter->debug_mask = debug_mask;
+
+ /* card specific initialization has been deferred until now .. */
+ if (adapter->if_ops.init_if)
+ if (adapter->if_ops.init_if(adapter))
+ goto error;
+
+ adapter->priv_num = 0;
+
+ for (i = 0; i < NXPWIFI_MAX_BSS_NUM; i++) {
+ /* Allocate memory for private structure */
+ adapter->priv[i] =
+ kzalloc(sizeof(struct nxpwifi_private), GFP_KERNEL);
+ if (!adapter->priv[i])
+ goto error;
+
+ adapter->priv[i]->adapter = adapter;
+ adapter->priv_num++;
+ }
+ nxpwifi_init_lock_list(adapter);
+
+ timer_setup(&adapter->cmd_timer, nxpwifi_cmd_timeout_func, 0);
+
+ return 0;
+
+error:
+ nxpwifi_dbg(adapter, ERROR,
+ "info: leave %s with error\n", __func__);
+
+ for (i = 0; i < adapter->priv_num; i++)
+ kfree(adapter->priv[i]);
+
+ kfree(adapter);
+
+ return -1;
+}
+
+/* This function unregisters the device and performs all the necessary
+ * cleanups.
+ *
+ * The following cleanup operations are performed -
+ * - Free the timers
+ * - Free beacon buffers
+ * - Free private structures
+ * - Free adapter structure
+ */
+static int nxpwifi_unregister(struct nxpwifi_adapter *adapter)
+{
+ s32 i;
+
+ if (adapter->if_ops.cleanup_if)
+ adapter->if_ops.cleanup_if(adapter);
+
+ del_timer_sync(&adapter->cmd_timer);
+
+ /* Free private structures */
+ for (i = 0; i < adapter->priv_num; i++) {
+ if (adapter->priv[i]) {
+ nxpwifi_free_curr_bcn(adapter->priv[i]);
+ kfree(adapter->priv[i]);
+ }
+ }
+
+ if (adapter->nd_info) {
+ for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
+ kfree(adapter->nd_info->matches[i]);
+ kfree(adapter->nd_info);
+ adapter->nd_info = NULL;
+ }
+
+ kfree(adapter->regd);
+
+ kfree(adapter);
+ return 0;
+}
+
+void nxpwifi_queue_main_work(struct nxpwifi_adapter *adapter)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&adapter->main_proc_lock, flags);
+ if (adapter->nxpwifi_processing) {
+ adapter->more_task_flag = true;
+ spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
+ } else {
+ spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
+ queue_work(adapter->workqueue, &adapter->main_work);
+ }
+}
+EXPORT_SYMBOL_GPL(nxpwifi_queue_main_work);
+
+static void nxpwifi_queue_rx_work(struct nxpwifi_adapter *adapter)
+{
+ spin_lock_bh(&adapter->rx_proc_lock);
+ if (adapter->rx_processing) {
+ spin_unlock_bh(&adapter->rx_proc_lock);
+ } else {
+ spin_unlock_bh(&adapter->rx_proc_lock);
+ queue_work(adapter->rx_workqueue, &adapter->rx_work);
+ }
+}
+
+static int nxpwifi_process_rx(struct nxpwifi_adapter *adapter)
+{
+ struct sk_buff *skb;
+ struct nxpwifi_rxinfo *rx_info;
+
+ spin_lock_bh(&adapter->rx_proc_lock);
+ if (adapter->rx_processing || adapter->rx_locked) {
+ spin_unlock_bh(&adapter->rx_proc_lock);
+ goto exit_rx_proc;
+ } else {
+ adapter->rx_processing = true;
+ spin_unlock_bh(&adapter->rx_proc_lock);
+ }
+
+ /* Check for Rx data */
+ while ((skb = skb_dequeue(&adapter->rx_data_q))) {
+ atomic_dec(&adapter->rx_pending);
+ if (adapter->delay_main_work &&
+ (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
+ adapter->delay_main_work = false;
+ nxpwifi_queue_main_work(adapter);
+ }
+ rx_info = NXPWIFI_SKB_RXCB(skb);
+ if (rx_info->buf_type == NXPWIFI_TYPE_AGGR_DATA) {
+ if (adapter->if_ops.deaggr_pkt)
+ adapter->if_ops.deaggr_pkt(adapter, skb);
+ dev_kfree_skb_any(skb);
+ } else {
+ nxpwifi_handle_rx_packet(adapter, skb);
+ }
+ }
+ spin_lock_bh(&adapter->rx_proc_lock);
+ adapter->rx_processing = false;
+ spin_unlock_bh(&adapter->rx_proc_lock);
+
+exit_rx_proc:
+ return 0;
+}
+
+static void maybe_quirk_fw_disable_ds(struct nxpwifi_adapter *adapter)
+{
+ struct nxpwifi_private *priv = nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_STA);
+ struct nxpwifi_ver_ext ver_ext;
+
+ if (test_and_set_bit(NXPWIFI_IS_REQUESTING_FW_VEREXT, &adapter->work_flags))
+ return;
+
+ memset(&ver_ext, 0, sizeof(ver_ext));
+ ver_ext.version_str_sel = 1;
+ if (nxpwifi_send_cmd(priv, HOST_CMD_VERSION_EXT,
+ HOST_ACT_GEN_GET, 0, &ver_ext, false)) {
+ nxpwifi_dbg(priv->adapter, MSG,
+ "Checking hardware revision failed.\n");
+ }
+}
+
+/* The main process.
+ *
+ * This function is the main procedure of the driver and handles various driver
+ * operations. It runs in a loop and provides the core functionalities.
+ *
+ * The main responsibilities of this function are -
+ * - Ensure concurrency control
+ * - Handle pending interrupts and call interrupt handlers
+ * - Wake up the card if required
+ * - Handle command responses and call response handlers
+ * - Handle events and call event handlers
+ * - Execute pending commands
+ * - Transmit pending data packets
+ */
+int nxpwifi_main_process(struct nxpwifi_adapter *adapter)
+{
+ int ret = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&adapter->main_proc_lock, flags);
+
+ /* Check if already processing */
+ if (adapter->nxpwifi_processing || adapter->main_locked) {
+ adapter->more_task_flag = true;
+ spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
+ return 0;
+ }
+
+ adapter->nxpwifi_processing = true;
+ spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
+
+process_start:
+ do {
+ if (adapter->hw_status == NXPWIFI_HW_STATUS_NOT_READY)
+ break;
+
+ /* For non-USB interfaces, If we process interrupts first, it
+ * would increase RX pending even further. Avoid this by
+ * checking if rx_pending has crossed high threshold and
+ * schedule rx work queue and then process interrupts.
+ * For USB interface, there are no interrupts. We already have
+ * HIGH_RX_PENDING check in usb.c
+ */
+ if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING) {
+ adapter->delay_main_work = true;
+ nxpwifi_queue_rx_work(adapter);
+ break;
+ }
+
+ /* Handle pending interrupt if any */
+ if (adapter->int_status) {
+ if (adapter->hs_activated)
+ nxpwifi_process_hs_config(adapter);
+ if (adapter->if_ops.process_int_status)
+ adapter->if_ops.process_int_status(adapter);
+ }
+
+ if (adapter->rx_work_enabled && adapter->data_received)
+ nxpwifi_queue_rx_work(adapter);
+
+ /* Need to wake up the card ? */
+ if (adapter->ps_state == PS_STATE_SLEEP &&
+ (adapter->pm_wakeup_card_req &&
+ !adapter->pm_wakeup_fw_try) &&
+ (is_command_pending(adapter) ||
+ !skb_queue_empty(&adapter->tx_data_q) ||
+ !nxpwifi_bypass_txlist_empty(adapter) ||
+ !nxpwifi_wmm_lists_empty(adapter))) {
+ adapter->pm_wakeup_fw_try = true;
+ mod_timer(&adapter->wakeup_timer, jiffies + (HZ * 3));
+ adapter->if_ops.wakeup(adapter);
+ continue;
+ }
+
+ if (IS_CARD_RX_RCVD(adapter)) {
+ adapter->data_received = false;
+ adapter->pm_wakeup_fw_try = false;
+ del_timer(&adapter->wakeup_timer);
+ if (adapter->ps_state == PS_STATE_SLEEP)
+ adapter->ps_state = PS_STATE_AWAKE;
+ } else {
+ /* We have tried to wakeup the card already */
+ if (adapter->pm_wakeup_fw_try)
+ break;
+ if (adapter->ps_state == PS_STATE_PRE_SLEEP)
+ nxpwifi_check_ps_cond(adapter);
+
+ if (adapter->ps_state != PS_STATE_AWAKE)
+ break;
+ if (adapter->tx_lock_flag)
+ break;
+
+ if ((!adapter->scan_chan_gap_enabled &&
+ adapter->scan_processing) || adapter->data_sent ||
+ (nxpwifi_wmm_lists_empty(adapter) &&
+ nxpwifi_bypass_txlist_empty(adapter) &&
+ skb_queue_empty(&adapter->tx_data_q))) {
+ if (adapter->cmd_sent || adapter->curr_cmd ||
+ (!is_command_pending(adapter)))
+ break;
+ }
+ }
+
+ /* Check for event */
+ if (adapter->event_received) {
+ adapter->event_received = false;
+ nxpwifi_process_event(adapter);
+ }
+
+ /* Check for Cmd Resp */
+ if (adapter->cmd_resp_received) {
+ adapter->cmd_resp_received = false;
+ nxpwifi_process_cmdresp(adapter);
+
+ /* call nxpwifi back when init_fw is done */
+ if (adapter->hw_status == NXPWIFI_HW_STATUS_INIT_DONE) {
+ adapter->hw_status = NXPWIFI_HW_STATUS_READY;
+ nxpwifi_init_fw_complete(adapter);
+ maybe_quirk_fw_disable_ds(adapter);
+ }
+ }
+
+ /* Check if we need to confirm Sleep Request
+ * received previously
+ */
+ if (adapter->ps_state == PS_STATE_PRE_SLEEP)
+ nxpwifi_check_ps_cond(adapter);
+
+ /* * The ps_state may have been changed during processing of
+ * Sleep Request event.
+ */
+ if (adapter->ps_state == PS_STATE_SLEEP ||
+ adapter->ps_state == PS_STATE_PRE_SLEEP ||
+ adapter->ps_state == PS_STATE_SLEEP_CFM) {
+ continue;
+ }
+
+ if (adapter->tx_lock_flag)
+ continue;
+
+ if (!adapter->cmd_sent && !adapter->curr_cmd) {
+ if (nxpwifi_exec_next_cmd(adapter) == -1) {
+ ret = -1;
+ break;
+ }
+ }
+
+ if ((adapter->scan_chan_gap_enabled ||
+ !adapter->scan_processing) &&
+ !adapter->data_sent &&
+ !skb_queue_empty(&adapter->tx_data_q)) {
+ if (adapter->hs_activated_manually) {
+ nxpwifi_cancel_hs(nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_ANY),
+ NXPWIFI_ASYNC_CMD);
+ adapter->hs_activated_manually = false;
+ }
+
+ nxpwifi_process_tx_queue(adapter);
+ if (adapter->hs_activated) {
+ clear_bit(NXPWIFI_IS_HS_CONFIGURED,
+ &adapter->work_flags);
+ nxpwifi_hs_activated_event
+ (nxpwifi_get_priv
+ (adapter, NXPWIFI_BSS_ROLE_ANY),
+ false);
+ }
+ }
+
+ if ((adapter->scan_chan_gap_enabled ||
+ !adapter->scan_processing) &&
+ !adapter->data_sent &&
+ !nxpwifi_bypass_txlist_empty(adapter)) {
+ if (adapter->hs_activated_manually) {
+ nxpwifi_cancel_hs(nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_ANY),
+ NXPWIFI_ASYNC_CMD);
+ adapter->hs_activated_manually = false;
+ }
+
+ nxpwifi_process_bypass_tx(adapter);
+ if (adapter->hs_activated) {
+ clear_bit(NXPWIFI_IS_HS_CONFIGURED,
+ &adapter->work_flags);
+ nxpwifi_hs_activated_event
+ (nxpwifi_get_priv
+ (adapter, NXPWIFI_BSS_ROLE_ANY),
+ false);
+ }
+ }
+
+ if ((adapter->scan_chan_gap_enabled ||
+ !adapter->scan_processing) &&
+ !adapter->data_sent && !nxpwifi_wmm_lists_empty(adapter)) {
+ if (adapter->hs_activated_manually) {
+ nxpwifi_cancel_hs(nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_ANY),
+ NXPWIFI_ASYNC_CMD);
+ adapter->hs_activated_manually = false;
+ }
+
+ nxpwifi_wmm_process_tx(adapter);
+ if (adapter->hs_activated) {
+ clear_bit(NXPWIFI_IS_HS_CONFIGURED,
+ &adapter->work_flags);
+ nxpwifi_hs_activated_event
+ (nxpwifi_get_priv
+ (adapter, NXPWIFI_BSS_ROLE_ANY),
+ false);
+ }
+ }
+
+ if (adapter->delay_null_pkt && !adapter->cmd_sent &&
+ !adapter->curr_cmd && !is_command_pending(adapter) &&
+ (nxpwifi_wmm_lists_empty(adapter) &&
+ nxpwifi_bypass_txlist_empty(adapter) &&
+ skb_queue_empty(&adapter->tx_data_q))) {
+ if (!nxpwifi_send_null_packet
+ (nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_STA),
+ NXPWIFI_TxPD_POWER_MGMT_NULL_PACKET |
+ NXPWIFI_TxPD_POWER_MGMT_LAST_PACKET)) {
+ adapter->delay_null_pkt = false;
+ adapter->ps_state = PS_STATE_SLEEP;
+ }
+ break;
+ }
+ } while (true);
+
+ spin_lock_irqsave(&adapter->main_proc_lock, flags);
+ if (adapter->more_task_flag) {
+ adapter->more_task_flag = false;
+ spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
+ goto process_start;
+ }
+ adapter->nxpwifi_processing = false;
+ spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(nxpwifi_main_process);
+
+/* This function frees the adapter structure.
+ *
+ * Additionally, this closes the netlink socket, frees the timers
+ * and private structures.
+ */
+static void nxpwifi_free_adapter(struct nxpwifi_adapter *adapter)
+{
+ if (!adapter) {
+ pr_err("%s: adapter is NULL\n", __func__);
+ return;
+ }
+
+ nxpwifi_unregister(adapter);
+ pr_debug("info: %s: free adapter\n", __func__);
+}
+
+/* This function cancels all works in the queue and destroys
+ * the main workqueue.
+ */
+static void nxpwifi_terminate_workqueue(struct nxpwifi_adapter *adapter)
+{
+ if (adapter->workqueue) {
+ destroy_workqueue(adapter->workqueue);
+ adapter->workqueue = NULL;
+ }
+
+ if (adapter->rx_workqueue) {
+ destroy_workqueue(adapter->rx_workqueue);
+ adapter->rx_workqueue = NULL;
+ }
+
+ if (adapter->host_mlme_workqueue) {
+ destroy_workqueue(adapter->host_mlme_workqueue);
+ adapter->host_mlme_workqueue = NULL;
+ }
+}
+
+/* This function gets firmware and initializes it.
+ *
+ * The main initialization steps followed are -
+ * - Download the correct firmware to card
+ * - Issue the init commands to firmware
+ */
+static int _nxpwifi_fw_dpc(const struct firmware *firmware, void *context)
+{
+ int ret;
+ char fmt[64];
+ struct nxpwifi_adapter *adapter = context;
+ struct nxpwifi_fw_image fw;
+ bool init_failed = false;
+ struct wireless_dev *wdev;
+ struct completion *fw_done = adapter->fw_done;
+
+ if (!firmware) {
+ nxpwifi_dbg(adapter, ERROR,
+ "Failed to get firmware %s\n", adapter->fw_name);
+ goto err_dnld_fw;
+ }
+
+ memset(&fw, 0, sizeof(struct nxpwifi_fw_image));
+ adapter->firmware = firmware;
+ fw.fw_buf = (u8 *)adapter->firmware->data;
+ fw.fw_len = adapter->firmware->size;
+
+ if (adapter->if_ops.dnld_fw)
+ ret = adapter->if_ops.dnld_fw(adapter, &fw);
+ else
+ ret = nxpwifi_dnld_fw(adapter, &fw);
+
+ if (ret == -1)
+ goto err_dnld_fw;
+
+ nxpwifi_dbg(adapter, MSG, "WLAN FW is active\n");
+
+ /* enable host interrupt after fw dnld is successful */
+ if (adapter->if_ops.enable_int) {
+ if (adapter->if_ops.enable_int(adapter))
+ goto err_dnld_fw;
+ }
+
+ adapter->init_wait_q_woken = false;
+ ret = nxpwifi_init_fw(adapter);
+ if (ret == -1) {
+ goto err_init_fw;
+ } else if (!ret) {
+ adapter->hw_status = NXPWIFI_HW_STATUS_READY;
+ goto done;
+ }
+ /* Wait for nxpwifi_init to complete */
+ wait_event_interruptible(adapter->init_wait_q,
+ adapter->init_wait_q_woken);
+ if (adapter->hw_status != NXPWIFI_HW_STATUS_READY)
+ goto err_init_fw;
+
+ if (!adapter->wiphy) {
+ if (nxpwifi_register_cfg80211(adapter)) {
+ nxpwifi_dbg(adapter, ERROR,
+ "cannot register with cfg80211\n");
+ goto err_init_fw;
+ }
+ }
+
+ if (nxpwifi_init_channel_scan_gap(adapter)) {
+ nxpwifi_dbg(adapter, ERROR,
+ "could not init channel stats table\n");
+ goto err_init_chan_scan;
+ }
+
+ rtnl_lock();
+ wiphy_lock(adapter->wiphy);
+ /* Create station interface by default */
+ wdev = nxpwifi_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
+ NL80211_IFTYPE_STATION, NULL);
+ if (IS_ERR(wdev)) {
+ nxpwifi_dbg(adapter, ERROR,
+ "cannot create default STA interface\n");
+ wiphy_unlock(adapter->wiphy);
+ rtnl_unlock();
+ goto err_add_intf;
+ }
+
+ wdev = nxpwifi_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
+ NL80211_IFTYPE_AP, NULL);
+ if (IS_ERR(wdev)) {
+ nxpwifi_dbg(adapter, ERROR,
+ "cannot create AP interface\n");
+ wiphy_unlock(adapter->wiphy);
+ rtnl_unlock();
+ goto err_add_intf;
+ }
+
+ wiphy_unlock(adapter->wiphy);
+ rtnl_unlock();
+
+ nxpwifi_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
+ nxpwifi_dbg(adapter, MSG, "driver_version = %s\n", fmt);
+ adapter->is_up = true;
+ goto done;
+
+err_add_intf:
+ vfree(adapter->chan_stats);
+err_init_chan_scan:
+ wiphy_unregister(adapter->wiphy);
+ wiphy_free(adapter->wiphy);
+err_init_fw:
+ if (adapter->if_ops.disable_int)
+ adapter->if_ops.disable_int(adapter);
+err_dnld_fw:
+ nxpwifi_dbg(adapter, ERROR,
+ "info: %s: unregister device\n", __func__);
+ if (adapter->if_ops.unregister_dev)
+ adapter->if_ops.unregister_dev(adapter);
+
+ set_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags);
+ nxpwifi_terminate_workqueue(adapter);
+
+ if (adapter->hw_status == NXPWIFI_HW_STATUS_READY) {
+ pr_debug("info: %s: shutdown nxpwifi\n", __func__);
+ nxpwifi_shutdown_drv(adapter);
+ nxpwifi_free_cmd_buffers(adapter);
+ }
+
+ init_failed = true;
+done:
+ if (adapter->cal_data) {
+ release_firmware(adapter->cal_data);
+ adapter->cal_data = NULL;
+ }
+ if (adapter->firmware) {
+ release_firmware(adapter->firmware);
+ adapter->firmware = NULL;
+ }
+ if (init_failed) {
+ if (adapter->irq_wakeup >= 0)
+ device_init_wakeup(adapter->dev, false);
+ nxpwifi_free_adapter(adapter);
+ }
+ /* Tell all current and future waiters we're finished */
+ complete_all(fw_done);
+
+ return init_failed ? -EIO : 0;
+}
+
+static void nxpwifi_fw_dpc(const struct firmware *firmware, void *context)
+{
+ _nxpwifi_fw_dpc(firmware, context);
+}
+
+/* This function gets the firmware and (if called asynchronously) kicks off the
+ * HW init when done.
+ */
+static int nxpwifi_init_hw_fw(struct nxpwifi_adapter *adapter,
+ bool req_fw_nowait)
+{
+ int ret;
+
+ if (req_fw_nowait) {
+ ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
+ adapter->dev, GFP_KERNEL, adapter,
+ nxpwifi_fw_dpc);
+ } else {
+ ret = request_firmware(&adapter->firmware,
+ adapter->fw_name,
+ adapter->dev);
+ }
+
+ if (ret < 0)
+ nxpwifi_dbg(adapter, ERROR, "request_firmware%s error %d\n",
+ req_fw_nowait ? "_nowait" : "", ret);
+ return ret;
+}
+
+/* CFG802.11 network device handler for open.
+ *
+ * Starts the data queue.
+ */
+static int
+nxpwifi_open(struct net_device *dev)
+{
+ netif_carrier_off(dev);
+
+ return 0;
+}
+
+/* CFG802.11 network device handler for close.
+ */
+static int
+nxpwifi_close(struct net_device *dev)
+{
+ struct nxpwifi_private *priv = nxpwifi_netdev_get_priv(dev);
+
+ if (priv->scan_request) {
+ struct cfg80211_scan_info info = {
+ .aborted = true,
+ };
+
+ nxpwifi_dbg(priv->adapter, INFO,
+ "aborting scan on ndo_stop\n");
+ cfg80211_scan_done(priv->scan_request, &info);
+ priv->scan_request = NULL;
+ priv->scan_aborting = true;
+ }
+
+ if (priv->sched_scanning) {
+ nxpwifi_dbg(priv->adapter, INFO,
+ "aborting bgscan on ndo_stop\n");
+ nxpwifi_stop_bg_scan(priv);
+ cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
+ }
+
+ return 0;
+}
+
+static bool
+nxpwifi_bypass_tx_queue(struct nxpwifi_private *priv,
+ struct sk_buff *skb)
+{
+ struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
+
+ if (eth_hdr->h_proto == htons(ETH_P_PAE) ||
+ nxpwifi_is_skb_mgmt_frame(skb)) {
+ nxpwifi_dbg(priv->adapter, DATA,
+ "bypass txqueue; eth type %#x, mgmt %d\n",
+ ntohs(eth_hdr->h_proto),
+ nxpwifi_is_skb_mgmt_frame(skb));
+ if (eth_hdr->h_proto == htons(ETH_P_PAE))
+ nxpwifi_dbg(priv->adapter, MSG,
+ "key: send EAPOL to %pM\n",
+ eth_hdr->h_dest);
+ return true;
+ }
+
+ return false;
+}
+
+/* Add buffer into wmm tx queue and queue work to transmit it.
+ */
+int nxpwifi_queue_tx_pkt(struct nxpwifi_private *priv, struct sk_buff *skb)
+{
+ struct netdev_queue *txq;
+ int index = nxpwifi_1d_to_wmm_queue[skb->priority];
+
+ if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
+ txq = netdev_get_tx_queue(priv->netdev, index);
+ if (!netif_tx_queue_stopped(txq)) {
+ netif_tx_stop_queue(txq);
+ nxpwifi_dbg(priv->adapter, DATA,
+ "stop queue: %d\n", index);
+ }
+ }
+
+ if (nxpwifi_bypass_tx_queue(priv, skb)) {
+ atomic_inc(&priv->adapter->tx_pending);
+ atomic_inc(&priv->adapter->bypass_tx_pending);
+ nxpwifi_wmm_add_buf_bypass_txqueue(priv, skb);
+ } else {
+ atomic_inc(&priv->adapter->tx_pending);
+ nxpwifi_wmm_add_buf_txqueue(priv, skb);
+ }
+
+ nxpwifi_queue_main_work(priv->adapter);
+
+ return 0;
+}
+
+struct sk_buff *
+nxpwifi_clone_skb_for_tx_status(struct nxpwifi_private *priv,
+ struct sk_buff *skb, u8 flag, u64 *cookie)
+{
+ struct sk_buff *orig_skb = skb;
+ struct nxpwifi_txinfo *tx_info, *orig_tx_info;
+
+ skb = skb_clone(skb, GFP_ATOMIC);
+ if (skb) {
+ int id;
+
+ spin_lock_bh(&priv->ack_status_lock);
+ id = idr_alloc(&priv->ack_status_frames, orig_skb,
+ 1, 0x10, GFP_ATOMIC);
+ spin_unlock_bh(&priv->ack_status_lock);
+
+ if (id >= 0) {
+ tx_info = NXPWIFI_SKB_TXCB(skb);
+ tx_info->ack_frame_id = id;
+ tx_info->flags |= flag;
+ orig_tx_info = NXPWIFI_SKB_TXCB(orig_skb);
+ orig_tx_info->ack_frame_id = id;
+ orig_tx_info->flags |= flag;
+
+ if (flag == NXPWIFI_BUF_FLAG_ACTION_TX_STATUS && cookie)
+ orig_tx_info->cookie = *cookie;
+
+ } else if (skb_shared(skb)) {
+ kfree_skb(orig_skb);
+ } else {
+ kfree_skb(skb);
+ skb = orig_skb;
+ }
+ } else {
+ /* couldn't clone -- lose tx status ... */
+ skb = orig_skb;
+ }
+
+ return skb;
+}
+
+/* CFG802.11 network device handler for data transmission.
+ */
+static netdev_tx_t
+nxpwifi_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct nxpwifi_private *priv = nxpwifi_netdev_get_priv(dev);
+ struct sk_buff *new_skb;
+ struct nxpwifi_txinfo *tx_info;
+ bool multicast;
+
+ nxpwifi_dbg(priv->adapter, DATA,
+ "data: %lu BSS(%d-%d): Data <= kernel\n",
+ jiffies, priv->bss_type, priv->bss_num);
+
+ if (test_bit(NXPWIFI_SURPRISE_REMOVED, &priv->adapter->work_flags)) {
+ kfree_skb(skb);
+ priv->stats.tx_dropped++;
+ return 0;
+ }
+ if (!skb->len || skb->len > ETH_FRAME_LEN) {
+ nxpwifi_dbg(priv->adapter, ERROR,
+ "Tx: bad skb len %d\n", skb->len);
+ kfree_skb(skb);
+ priv->stats.tx_dropped++;
+ return 0;
+ }
+ if (skb_headroom(skb) < NXPWIFI_MIN_DATA_HEADER_LEN) {
+ nxpwifi_dbg(priv->adapter, DATA,
+ "data: Tx: insufficient skb headroom %d\n",
+ skb_headroom(skb));
+ /* Insufficient skb headroom - allocate a new skb */
+ new_skb =
+ skb_realloc_headroom(skb, NXPWIFI_MIN_DATA_HEADER_LEN);
+ if (unlikely(!new_skb)) {
+ nxpwifi_dbg(priv->adapter, ERROR,
+ "Tx: cannot alloca new_skb\n");
+ kfree_skb(skb);
+ priv->stats.tx_dropped++;
+ return 0;
+ }
+ kfree_skb(skb);
+ skb = new_skb;
+ nxpwifi_dbg(priv->adapter, INFO,
+ "info: new skb headroomd %d\n",
+ skb_headroom(skb));
+ }
+
+ tx_info = NXPWIFI_SKB_TXCB(skb);
+ memset(tx_info, 0, sizeof(*tx_info));
+ tx_info->bss_num = priv->bss_num;
+ tx_info->bss_type = priv->bss_type;
+ tx_info->pkt_len = skb->len;
+
+ multicast = is_multicast_ether_addr(skb->data);
+
+ if (unlikely(!multicast && skb->sk &&
+ skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS &&
+ priv->adapter->fw_api_ver == NXPWIFI_FW_V15))
+ skb = nxpwifi_clone_skb_for_tx_status(priv,
+ skb,
+ NXPWIFI_BUF_FLAG_EAPOL_TX_STATUS, NULL);
+
+ /* Record the current time the packet was queued; used to
+ * determine the amount of time the packet was queued in
+ * the driver before it was sent to the firmware.
+ * The delay is then sent along with the packet to the
+ * firmware for aggregate delay calculation for stats and
+ * MSDU lifetime expiry.
+ */
+ __net_timestamp(skb);
+
+ nxpwifi_queue_tx_pkt(priv, skb);
+
+ return 0;
+}
+
+int nxpwifi_set_mac_address(struct nxpwifi_private *priv,
+ struct net_device *dev, bool external,
+ u8 *new_mac)
+{
+ int ret;
+ u64 mac_addr, old_mac_addr;
+
+ old_mac_addr = ether_addr_to_u64(priv->curr_addr);
+
+ if (external) {
+ mac_addr = ether_addr_to_u64(new_mac);
+ } else {
+ /* Internal mac address change */
+ if (priv->bss_type == NXPWIFI_BSS_TYPE_ANY)
+ return -EOPNOTSUPP;
+
+ mac_addr = old_mac_addr;
+
+ if (priv->adapter->priv[0] != priv) {
+ /* Set mac address based on bss_type/bss_num */
+ mac_addr ^= BIT_ULL(priv->bss_type + 8);
+ mac_addr += priv->bss_num;
+ }
+ }
+
+ u64_to_ether_addr(mac_addr, priv->curr_addr);
+
+ /* Send request to firmware */
+ ret = nxpwifi_send_cmd(priv, HOST_CMD_802_11_MAC_ADDRESS,
+ HOST_ACT_GEN_SET, 0, NULL, true);
+
+ if (ret) {
+ u64_to_ether_addr(old_mac_addr, priv->curr_addr);
+ nxpwifi_dbg(priv->adapter, ERROR,
+ "set mac address failed: ret=%d\n", ret);
+ return ret;
+ }
+
+ eth_hw_addr_set(dev, priv->curr_addr);
+ return 0;
+}
+
+/* CFG802.11 network device handler for setting MAC address.
+ */
+static int
+nxpwifi_ndo_set_mac_address(struct net_device *dev, void *addr)
+{
+ struct nxpwifi_private *priv = nxpwifi_netdev_get_priv(dev);
+ struct sockaddr *hw_addr = addr;
+
+ return nxpwifi_set_mac_address(priv, dev, true, hw_addr->sa_data);
+}
+
+/* CFG802.11 network device handler for setting multicast list.
+ */
+static void nxpwifi_set_multicast_list(struct net_device *dev)
+{
+ struct nxpwifi_private *priv = nxpwifi_netdev_get_priv(dev);
+ struct nxpwifi_multicast_list mcast_list;
+
+ if (dev->flags & IFF_PROMISC) {
+ mcast_list.mode = NXPWIFI_PROMISC_MODE;
+ } else if (dev->flags & IFF_ALLMULTI ||
+ netdev_mc_count(dev) > NXPWIFI_MAX_MULTICAST_LIST_SIZE) {
+ mcast_list.mode = NXPWIFI_ALL_MULTI_MODE;
+ } else {
+ mcast_list.mode = NXPWIFI_MULTICAST_MODE;
+ mcast_list.num_multicast_addr =
+ nxpwifi_copy_mcast_addr(&mcast_list, dev);
+ }
+ nxpwifi_request_set_multicast_list(priv, &mcast_list);
+}
+
+/* CFG802.11 network device handler for transmission timeout.
+ */
+static void
+nxpwifi_tx_timeout(struct net_device *dev, unsigned int txqueue)
+{
+ struct nxpwifi_private *priv = nxpwifi_netdev_get_priv(dev);
+
+ priv->num_tx_timeout++;
+ priv->tx_timeout_cnt++;
+ nxpwifi_dbg(priv->adapter, ERROR,
+ "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
+ jiffies, priv->tx_timeout_cnt, priv->bss_type,
+ priv->bss_num);
+ nxpwifi_set_trans_start(dev);
+
+ if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
+ priv->adapter->if_ops.card_reset) {
+ nxpwifi_dbg(priv->adapter, ERROR,
+ "tx_timeout_cnt exceeds threshold.\t"
+ "Triggering card reset!\n");
+ priv->adapter->if_ops.card_reset(priv->adapter);
+ }
+}
+
+void nxpwifi_upload_device_dump(struct nxpwifi_adapter *adapter)
+{
+ /* Dump all the memory data into single file, a userspace script will
+ * be used to split all the memory data to multiple files
+ */
+ nxpwifi_dbg(adapter, MSG,
+ "== nxpwifi dump information to /sys/class/devcoredump start\n");
+ dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len,
+ GFP_KERNEL);
+ nxpwifi_dbg(adapter, MSG,
+ "== nxpwifi dump information to /sys/class/devcoredump end\n");
+
+ /* Device dump data will be freed in device coredump release function
+ * after 5 min. Here reset adapter->devdump_data and ->devdump_len
+ * to avoid it been accidentally reused.
+ */
+ adapter->devdump_data = NULL;
+ adapter->devdump_len = 0;
+}
+EXPORT_SYMBOL_GPL(nxpwifi_upload_device_dump);
+
+void nxpwifi_drv_info_dump(struct nxpwifi_adapter *adapter)
+{
+ char *p;
+ char drv_version[64];
+ struct sdio_mmc_card *sdio_card;
+ struct nxpwifi_private *priv;
+ int i, idx;
+ struct netdev_queue *txq;
+ struct nxpwifi_debug_info *debug_info;
+
+ nxpwifi_dbg(adapter, MSG, "===nxpwifi driverinfo dump start===\n");
+
+ p = adapter->devdump_data;
+ strscpy(p, "========Start dump driverinfo========\n", NXPWIFI_FW_DUMP_SIZE);
+ p += strlen("========Start dump driverinfo========\n");
+ p += sprintf(p, "driver_name = ");
+ p += sprintf(p, "\"nxpwifi\"\n");
+
+ nxpwifi_drv_get_driver_version(adapter, drv_version,
+ sizeof(drv_version) - 1);
+ p += sprintf(p, "driver_version = %s\n", drv_version);
+
+ p += sprintf(p, "tx_pending = %d\n",
+ atomic_read(&adapter->tx_pending));
+ p += sprintf(p, "rx_pending = %d\n",
+ atomic_read(&adapter->rx_pending));
+
+ if (adapter->iface_type == NXPWIFI_SDIO) {
+ sdio_card = (struct sdio_mmc_card *)adapter->card;
+ p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
+ sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
+ p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
+ sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
+ }
+
+ for (i = 0; i < adapter->priv_num; i++) {
+ if (!adapter->priv[i] || !adapter->priv[i]->netdev)
+ continue;
+ priv = adapter->priv[i];
+ p += sprintf(p, "\n[interface : \"%s\"]\n",
+ priv->netdev->name);
+ p += sprintf(p, "wmm_tx_pending[0] = %d\n",
+ atomic_read(&priv->wmm_tx_pending[0]));
+ p += sprintf(p, "wmm_tx_pending[1] = %d\n",
+ atomic_read(&priv->wmm_tx_pending[1]));
+ p += sprintf(p, "wmm_tx_pending[2] = %d\n",
+ atomic_read(&priv->wmm_tx_pending[2]));
+ p += sprintf(p, "wmm_tx_pending[3] = %d\n",
+ atomic_read(&priv->wmm_tx_pending[3]));
+ p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
+ "Disconnected" : "Connected");
+ p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
+ ? "on" : "off"));
+ for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
+ txq = netdev_get_tx_queue(priv->netdev, idx);
+ p += sprintf(p, "tx queue %d:%s ", idx,
+ netif_tx_queue_stopped(txq) ?
+ "stopped" : "started");
+ }
+ p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
+ priv->netdev->name, priv->num_tx_timeout);
+ }
+
+ if (adapter->iface_type == NXPWIFI_SDIO) {
+ p += sprintf(p, "\n=== %s register dump===\n", "SDIO");
+ if (adapter->if_ops.reg_dump)
+ p += adapter->if_ops.reg_dump(adapter, p);
+ }
+ p += sprintf(p, "\n=== more debug information\n");
+ debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
+ if (debug_info) {
+ for (i = 0; i < adapter->priv_num; i++) {
+ if (!adapter->priv[i] || !adapter->priv[i]->netdev)
+ continue;
+ priv = adapter->priv[i];
+ nxpwifi_get_debug_info(priv, debug_info);
+ p += nxpwifi_debug_info_to_buffer(priv, p, debug_info);
+ break;
+ }
+ kfree(debug_info);
+ }
+
+ p += sprintf(p, "\n========End dump========\n");
+ nxpwifi_dbg(adapter, MSG, "===nxpwifi driverinfo dump end===\n");
+ adapter->devdump_len = p - (char *)adapter->devdump_data;
+}
+EXPORT_SYMBOL_GPL(nxpwifi_drv_info_dump);
+
+void nxpwifi_prepare_fw_dump_info(struct nxpwifi_adapter *adapter)
+{
+ u8 idx;
+ char *fw_dump_ptr;
+ u32 dump_len = 0;
+
+ for (idx = 0; idx < adapter->num_mem_types; idx++) {
+ struct memory_type_mapping *entry =
+ &adapter->mem_type_mapping_tbl[idx];
+
+ if (entry->mem_ptr) {
+ dump_len += (strlen("========Start dump ") +
+ strlen(entry->mem_name) +
+ strlen("========\n") +
+ (entry->mem_size + 1) +
+ strlen("\n========End dump========\n"));
+ }
+ }
+
+ if (dump_len + 1 + adapter->devdump_len > NXPWIFI_FW_DUMP_SIZE) {
+ /* Realloc in case buffer overflow */
+ fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len);
+ nxpwifi_dbg(adapter, MSG, "Realloc device dump data.\n");
+ if (!fw_dump_ptr) {
+ vfree(adapter->devdump_data);
+ nxpwifi_dbg(adapter, ERROR,
+ "vzalloc devdump data failure!\n");
+ return;
+ }
+
+ memmove(fw_dump_ptr, adapter->devdump_data,
+ adapter->devdump_len);
+ vfree(adapter->devdump_data);
+ adapter->devdump_data = fw_dump_ptr;
+ }
+
+ fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len;
+
+ for (idx = 0; idx < adapter->num_mem_types; idx++) {
+ struct memory_type_mapping *entry =
+ &adapter->mem_type_mapping_tbl[idx];
+
+ if (entry->mem_ptr) {
+ fw_dump_ptr += sprintf(fw_dump_ptr, "========Start dump ");
+ fw_dump_ptr += sprintf(fw_dump_ptr, "%s", entry->mem_name);
+ fw_dump_ptr += sprintf(fw_dump_ptr, "========\n");
+ memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
+ fw_dump_ptr += entry->mem_size;
+ fw_dump_ptr += sprintf(fw_dump_ptr, "\n========End dump========\n");
+ }
+ }
+
+ adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data;
+
+ for (idx = 0; idx < adapter->num_mem_types; idx++) {
+ struct memory_type_mapping *entry =
+ &adapter->mem_type_mapping_tbl[idx];
+
+ vfree(entry->mem_ptr);
+ entry->mem_ptr = NULL;
+ entry->mem_size = 0;
+ }
+}
+EXPORT_SYMBOL_GPL(nxpwifi_prepare_fw_dump_info);
+
+/* CFG802.11 network device handler for statistics retrieval.
+ */
+static struct net_device_stats *nxpwifi_get_stats(struct net_device *dev)
+{
+ struct nxpwifi_private *priv = nxpwifi_netdev_get_priv(dev);
+
+ return &priv->stats;
+}
+
+static u16
+nxpwifi_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
+ struct net_device *sb_dev)
+{
+ skb->priority = cfg80211_classify8021d(skb, NULL);
+ return nxpwifi_1d_to_wmm_queue[skb->priority];
+}
+
+/* Network device handlers */
+static const struct net_device_ops nxpwifi_netdev_ops = {
+ .ndo_open = nxpwifi_open,
+ .ndo_stop = nxpwifi_close,
+ .ndo_start_xmit = nxpwifi_hard_start_xmit,
+ .ndo_set_mac_address = nxpwifi_ndo_set_mac_address,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_tx_timeout = nxpwifi_tx_timeout,
+ .ndo_get_stats = nxpwifi_get_stats,
+ .ndo_set_rx_mode = nxpwifi_set_multicast_list,
+ .ndo_select_queue = nxpwifi_netdev_select_wmm_queue,
+};
+
+/* This function initializes the private structure parameters.
+ *
+ * The following wait queues are initialized -
+ * - IOCTL wait queue
+ * - Command wait queue
+ * - Statistics wait queue
+ *
+ * ...and the following default parameters are set -
+ * - Current key index : Set to 0
+ * - Rate index : Set to auto
+ * - Media connected : Set to disconnected
+ * - Nick name : Set to null
+ * - Number of Tx timeout : Set to 0
+ * - Device address : Set to current address
+ * - Rx histogram statistc : Set to 0
+ *
+ * In addition, the CFG80211 work queue is also created.
+ */
+void nxpwifi_init_priv_params(struct nxpwifi_private *priv,
+ struct net_device *dev)
+{
+ dev->netdev_ops = &nxpwifi_netdev_ops;
+ dev->needs_free_netdev = true;
+ /* Initialize private structure */
+ priv->current_key_index = 0;
+ priv->media_connected = false;
+ memset(priv->mgmt_ie, 0,
+ sizeof(struct nxpwifi_ie) * MAX_MGMT_IE_INDEX);
+ priv->beacon_idx = NXPWIFI_AUTO_IDX_MASK;
+ priv->proberesp_idx = NXPWIFI_AUTO_IDX_MASK;
+ priv->assocresp_idx = NXPWIFI_AUTO_IDX_MASK;
+ priv->gen_idx = NXPWIFI_AUTO_IDX_MASK;
+ priv->num_tx_timeout = 0;
+ if (is_valid_ether_addr(dev->dev_addr))
+ ether_addr_copy(priv->curr_addr, dev->dev_addr);
+ else
+ ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
+
+ if (GET_BSS_ROLE(priv) == NXPWIFI_BSS_ROLE_STA ||
+ GET_BSS_ROLE(priv) == NXPWIFI_BSS_ROLE_UAP) {
+ priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
+ if (priv->hist_data)
+ nxpwifi_hist_data_reset(priv);
+ }
+}
+
+/* This function check if command is pending.
+ */
+int is_command_pending(struct nxpwifi_adapter *adapter)
+{
+ int is_cmd_pend_q_empty;
+
+ 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);
+
+ return !is_cmd_pend_q_empty;
+}
+
+/* This is the host mlme work queue function.
+ * It handles the host mlme operations.
+ */
+static void nxpwifi_host_mlme_work_queue(struct work_struct *work)
+{
+ struct nxpwifi_adapter *adapter =
+ container_of(work, struct nxpwifi_adapter, host_mlme_work);
+
+ if (test_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags))
+ return;
+
+ /* Check for host mlme disconnection */
+ if (adapter->host_mlme_link_lost) {
+ if (adapter->priv_link_lost) {
+ nxpwifi_reset_connect_state(adapter->priv_link_lost,
+ WLAN_REASON_DEAUTH_LEAVING,
+ true);
+ adapter->priv_link_lost = NULL;
+ }
+ adapter->host_mlme_link_lost = false;
+ }
+
+ /* Check for host mlme Assoc Resp */
+ if (adapter->assoc_resp_received) {
+ nxpwifi_process_assoc_resp(adapter);
+ adapter->assoc_resp_received = false;
+ }
+}
+
+/* This is the RX work queue function.
+ *
+ * It handles the RX operations.
+ */
+static void nxpwifi_rx_work_queue(struct work_struct *work)
+{
+ struct nxpwifi_adapter *adapter =
+ container_of(work, struct nxpwifi_adapter, rx_work);
+
+ if (test_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags))
+ return;
+ nxpwifi_process_rx(adapter);
+}
+
+/* This is the main work queue function.
+ *
+ * It handles the main process, which in turn handles the complete
+ * driver operations.
+ */
+static void nxpwifi_main_work_queue(struct work_struct *work)
+{
+ struct nxpwifi_adapter *adapter =
+ container_of(work, struct nxpwifi_adapter, main_work);
+
+ if (test_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags))
+ return;
+ nxpwifi_main_process(adapter);
+}
+
+/* Common teardown code used for both device removal and reset */
+static void nxpwifi_uninit_sw(struct nxpwifi_adapter *adapter)
+{
+ struct nxpwifi_private *priv;
+ int i;
+
+ /* We can no longer handle interrupts once we start doing the teardown
+ * below.
+ */
+ if (adapter->if_ops.disable_int)
+ adapter->if_ops.disable_int(adapter);
+
+ set_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags);
+ nxpwifi_terminate_workqueue(adapter);
+ adapter->int_status = 0;
+
+ /* Stop data */
+ for (i = 0; i < adapter->priv_num; i++) {
+ priv = adapter->priv[i];
+ if (priv && priv->netdev) {
+ nxpwifi_stop_net_dev_queue(priv->netdev, adapter);
+ if (netif_carrier_ok(priv->netdev))
+ netif_carrier_off(priv->netdev);
+ netif_device_detach(priv->netdev);
+ }
+ }
+
+ nxpwifi_dbg(adapter, CMD, "cmd: calling nxpwifi_shutdown_drv...\n");
+ nxpwifi_shutdown_drv(adapter);
+ nxpwifi_dbg(adapter, CMD, "cmd: nxpwifi_shutdown_drv done\n");
+
+ if (atomic_read(&adapter->rx_pending) ||
+ atomic_read(&adapter->tx_pending) ||
+ atomic_read(&adapter->cmd_pending)) {
+ nxpwifi_dbg(adapter, ERROR,
+ "rx_pending=%d, tx_pending=%d,\t"
+ "cmd_pending=%d\n",
+ atomic_read(&adapter->rx_pending),
+ atomic_read(&adapter->tx_pending),
+ atomic_read(&adapter->cmd_pending));
+ }
+
+ for (i = 0; i < adapter->priv_num; i++) {
+ priv = adapter->priv[i];
+ if (!priv)
+ continue;
+ rtnl_lock();
+ if (priv->netdev &&
+ priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) {
+ /* Close the netdev now, because if we do it later, the
+ * netdev notifiers will need to acquire the wiphy lock
+ * again --> deadlock.
+ */
+ dev_close(priv->wdev.netdev);
+ wiphy_lock(adapter->wiphy);
+ nxpwifi_del_virtual_intf(adapter->wiphy, &priv->wdev);
+ wiphy_unlock(adapter->wiphy);
+ }
+ rtnl_unlock();
+ }
+
+ wiphy_unregister(adapter->wiphy);
+ wiphy_free(adapter->wiphy);
+ adapter->wiphy = NULL;
+
+ vfree(adapter->chan_stats);
+ nxpwifi_free_cmd_buffers(adapter);
+}
+
+/* This function can be used for shutting down the adapter SW.
+ */
+int nxpwifi_shutdown_sw(struct nxpwifi_adapter *adapter)
+{
+ struct nxpwifi_private *priv;
+
+ if (!adapter)
+ return 0;
+
+ wait_for_completion(adapter->fw_done);
+ /* Caller should ensure we aren't suspending while this happens */
+ reinit_completion(adapter->fw_done);
+
+ priv = nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_ANY);
+ nxpwifi_deauthenticate(priv, NULL);
+
+ nxpwifi_init_shutdown_fw(priv, NXPWIFI_FUNC_SHUTDOWN);
+
+ nxpwifi_uninit_sw(adapter);
+ adapter->is_up = false;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(nxpwifi_shutdown_sw);
+
+/* This function can be used for reinitting the adapter SW. Required
+ * code is extracted from nxpwifi_add_card()
+ */
+int
+nxpwifi_reinit_sw(struct nxpwifi_adapter *adapter)
+{
+ int ret;
+
+ nxpwifi_init_lock_list(adapter);
+ if (adapter->if_ops.up_dev)
+ adapter->if_ops.up_dev(adapter);
+
+ adapter->hw_status = NXPWIFI_HW_STATUS_INITIALIZING;
+ clear_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags);
+ init_waitqueue_head(&adapter->init_wait_q);
+ clear_bit(NXPWIFI_IS_SUSPENDED, &adapter->work_flags);
+ adapter->hs_activated = false;
+ clear_bit(NXPWIFI_IS_CMD_TIMEDOUT, &adapter->work_flags);
+ init_waitqueue_head(&adapter->hs_activate_wait_q);
+ init_waitqueue_head(&adapter->cmd_wait_q.wait);
+ adapter->cmd_wait_q.status = 0;
+ adapter->scan_wait_q_woken = false;
+
+ if (num_possible_cpus() > 1)
+ adapter->rx_work_enabled = true;
+
+ adapter->workqueue =
+ alloc_workqueue("NXPWIFI_WORK_QUEUE",
+ WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0);
+ if (!adapter->workqueue)
+ goto err_kmalloc;
+
+ INIT_WORK(&adapter->main_work, nxpwifi_main_work_queue);
+
+ if (adapter->rx_work_enabled) {
+ adapter->rx_workqueue = alloc_workqueue("NXPWIFI_RX_WORK_QUEUE",
+ WQ_HIGHPRI |
+ WQ_MEM_RECLAIM |
+ WQ_UNBOUND, 0);
+ if (!adapter->rx_workqueue)
+ goto err_kmalloc;
+ INIT_WORK(&adapter->rx_work, nxpwifi_rx_work_queue);
+ }
+
+ adapter->host_mlme_workqueue =
+ alloc_workqueue("NXPWIFI_HOST_MLME_WORK_QUEUE",
+ WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0);
+ if (!adapter->host_mlme_workqueue)
+ goto err_kmalloc;
+
+ INIT_WORK(&adapter->host_mlme_work, nxpwifi_host_mlme_work_queue);
+
+ /* Register the device. Fill up the private data structure with
+ * relevant information from the card. Some code extracted from
+ * nxpwifi_register_dev()
+ */
+ nxpwifi_dbg(adapter, INFO, "%s, nxpwifi_init_hw_fw()...\n", __func__);
+
+ if (nxpwifi_init_hw_fw(adapter, false)) {
+ nxpwifi_dbg(adapter, ERROR,
+ "%s: firmware init failed\n", __func__);
+ goto err_init_fw;
+ }
+
+ /* _nxpwifi_fw_dpc() does its own cleanup */
+ ret = _nxpwifi_fw_dpc(adapter->firmware, adapter);
+ if (ret) {
+ pr_err("Failed to bring up adapter: %d\n", ret);
+ return ret;
+ }
+ nxpwifi_dbg(adapter, INFO, "%s, successful\n", __func__);
+
+ return 0;
+
+err_init_fw:
+ nxpwifi_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
+ if (adapter->if_ops.unregister_dev)
+ adapter->if_ops.unregister_dev(adapter);
+
+err_kmalloc:
+ set_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags);
+ nxpwifi_terminate_workqueue(adapter);
+ if (adapter->hw_status == NXPWIFI_HW_STATUS_READY) {
+ nxpwifi_dbg(adapter, ERROR,
+ "info: %s: shutdown nxpwifi\n", __func__);
+ nxpwifi_shutdown_drv(adapter);
+ nxpwifi_free_cmd_buffers(adapter);
+ }
+
+ complete_all(adapter->fw_done);
+ nxpwifi_dbg(adapter, INFO, "%s, error\n", __func__);
+
+ return -1;
+}
+EXPORT_SYMBOL_GPL(nxpwifi_reinit_sw);
+
+static irqreturn_t nxpwifi_irq_wakeup_handler(int irq, void *priv)
+{
+ struct nxpwifi_adapter *adapter = priv;
+
+ dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
+ adapter->wake_by_wifi = true;
+ disable_irq_nosync(irq);
+
+ /* Notify PM core we are wakeup source */
+ pm_wakeup_event(adapter->dev, 0);
+ pm_system_wakeup();
+
+ return IRQ_HANDLED;
+}
+
+static void nxpwifi_probe_of(struct nxpwifi_adapter *adapter)
+{
+ int ret;
+ struct device *dev = adapter->dev;
+
+ if (!dev->of_node)
+ goto err_exit;
+
+ adapter->dt_node = dev->of_node;
+ adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
+ if (!adapter->irq_wakeup) {
+ dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
+ goto err_exit;
+ }
+
+ ret = devm_request_irq(dev, adapter->irq_wakeup,
+ nxpwifi_irq_wakeup_handler, IRQF_TRIGGER_LOW,
+ "wifi_wake", adapter);
+ if (ret) {
+ dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
+ adapter->irq_wakeup, ret);
+ goto err_exit;
+ }
+
+ disable_irq(adapter->irq_wakeup);
+ if (device_init_wakeup(dev, true)) {
+ dev_err(dev, "fail to init wakeup for nxpwifi\n");
+ goto err_exit;
+ }
+ return;
+
+err_exit:
+ adapter->irq_wakeup = -1;
+}
+
+/* This function adds the card.
+ *
+ * This function follows the following major steps to set up the device -
+ * - Initialize software. This includes probing the card, registering
+ * the interface operations table, and allocating/initializing the
+ * adapter structure
+ * - Set up the netlink socket
+ * - Create and start the main work queue
+ * - Register the device
+ * - Initialize firmware and hardware
+ * - Add logical interfaces
+ */
+int
+nxpwifi_add_card(void *card, struct completion *fw_done,
+ struct nxpwifi_if_ops *if_ops, u8 iface_type,
+ struct device *dev)
+{
+ struct nxpwifi_adapter *adapter;
+
+ if (nxpwifi_register(card, dev, if_ops, (void **)&adapter)) {
+ pr_err("%s: software init failed\n", __func__);
+ goto err_init_sw;
+ }
+
+ nxpwifi_probe_of(adapter);
+
+ adapter->iface_type = iface_type;
+ adapter->fw_done = fw_done;
+
+ adapter->hw_status = NXPWIFI_HW_STATUS_INITIALIZING;
+ clear_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags);
+ init_waitqueue_head(&adapter->init_wait_q);
+ clear_bit(NXPWIFI_IS_SUSPENDED, &adapter->work_flags);
+ adapter->hs_activated = false;
+ init_waitqueue_head(&adapter->hs_activate_wait_q);
+ init_waitqueue_head(&adapter->cmd_wait_q.wait);
+ adapter->cmd_wait_q.status = 0;
+ adapter->scan_wait_q_woken = false;
+
+ if (num_possible_cpus() > 1)
+ adapter->rx_work_enabled = true;
+
+ adapter->workqueue =
+ alloc_workqueue("NXPWIFI_WORK_QUEUE",
+ WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0);
+ if (!adapter->workqueue)
+ goto err_kmalloc;
+
+ INIT_WORK(&adapter->main_work, nxpwifi_main_work_queue);
+
+ if (adapter->rx_work_enabled) {
+ adapter->rx_workqueue = alloc_workqueue("NXPWIFI_RX_WORK_QUEUE",
+ WQ_HIGHPRI |
+ WQ_MEM_RECLAIM |
+ WQ_UNBOUND, 0);
+ if (!adapter->rx_workqueue)
+ goto err_kmalloc;
+
+ INIT_WORK(&adapter->rx_work, nxpwifi_rx_work_queue);
+ }
+
+ adapter->host_mlme_workqueue =
+ alloc_workqueue("NXPWIFI_HOST_MLME_WORK_QUEUE",
+ WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0);
+ if (!adapter->host_mlme_workqueue)
+ goto err_kmalloc;
+
+ INIT_WORK(&adapter->host_mlme_work, nxpwifi_host_mlme_work_queue);
+
+ /* Register the device. Fill up the private data structure with relevant
+ * information from the card.
+ */
+ if (adapter->if_ops.register_dev(adapter)) {
+ pr_err("%s: failed to register nxpwifi device\n", __func__);
+ goto err_registerdev;
+ }
+
+ if (nxpwifi_init_hw_fw(adapter, true)) {
+ pr_err("%s: firmware init failed\n", __func__);
+ goto err_init_fw;
+ }
+
+ return 0;
+
+err_init_fw:
+ pr_debug("info: %s: unregister device\n", __func__);
+ if (adapter->if_ops.unregister_dev)
+ adapter->if_ops.unregister_dev(adapter);
+err_registerdev:
+ set_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags);
+ nxpwifi_terminate_workqueue(adapter);
+ if (adapter->hw_status == NXPWIFI_HW_STATUS_READY) {
+ pr_debug("info: %s: shutdown nxpwifi\n", __func__);
+ nxpwifi_shutdown_drv(adapter);
+ nxpwifi_free_cmd_buffers(adapter);
+ }
+err_kmalloc:
+ if (adapter->irq_wakeup >= 0)
+ device_init_wakeup(adapter->dev, false);
+ nxpwifi_free_adapter(adapter);
+
+err_init_sw:
+
+ return -1;
+}
+EXPORT_SYMBOL_GPL(nxpwifi_add_card);
+
+/* This function removes the card.
+ *
+ * This function follows the following major steps to remove the device -
+ * - Stop data traffic
+ * - Shutdown firmware
+ * - Remove the logical interfaces
+ * - Terminate the work queue
+ * - Unregister the device
+ * - Free the adapter structure
+ */
+int nxpwifi_remove_card(struct nxpwifi_adapter *adapter)
+{
+ if (!adapter)
+ return 0;
+
+ if (adapter->is_up)
+ nxpwifi_uninit_sw(adapter);
+
+ if (adapter->irq_wakeup >= 0)
+ device_init_wakeup(adapter->dev, false);
+
+ /* Unregister device */
+ nxpwifi_dbg(adapter, INFO,
+ "info: unregister device\n");
+ if (adapter->if_ops.unregister_dev)
+ adapter->if_ops.unregister_dev(adapter);
+ /* Free adapter structure */
+ nxpwifi_dbg(adapter, INFO,
+ "info: free adapter\n");
+ nxpwifi_free_adapter(adapter);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(nxpwifi_remove_card);
+
+void _nxpwifi_dbg(const struct nxpwifi_adapter *adapter, int mask,
+ const char *fmt, ...)
+{
+ struct va_format vaf;
+ va_list args;
+
+ if (!(adapter->debug_mask & mask))
+ return;
+
+ va_start(args, fmt);
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ if (adapter->dev)
+ dev_info(adapter->dev, "%pV", &vaf);
+ else
+ pr_info("%pV", &vaf);
+
+ va_end(args);
+}
+EXPORT_SYMBOL_GPL(_nxpwifi_dbg);
+
+/* This function initializes the module.
+ *
+ * The debug FS is also initialized if configured.
+ */
+static int
+nxpwifi_init_module(void)
+{
+#ifdef CONFIG_DEBUG_FS
+ nxpwifi_debugfs_init();
+#endif
+ return 0;
+}
+
+/* This function cleans up the module.
+ *
+ * The debug FS is removed if available.
+ */
+static void
+nxpwifi_cleanup_module(void)
+{
+#ifdef CONFIG_DEBUG_FS
+ nxpwifi_debugfs_remove();
+#endif
+}
+
+module_init(nxpwifi_init_module);
+module_exit(nxpwifi_cleanup_module);
+
+MODULE_AUTHOR("NXP International Ltd.");
+MODULE_DESCRIPTION("NXP WiFi Driver version " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
--
2.34.1
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