nss_wifili.c - codeaurora/quic/qsdk/oss/lklm/nss-drv - Gitiles

 /*
  **************************************************************************
  * Copyright (c) 2017, The Linux Foundation. All rights reserved.
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
  * above copyright notice and this permission notice appear in all copies.
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  **************************************************************************
  */

 #include "nss_tx_rx_common.h"

 #define NSS_WIFILI_TX_TIMEOUT 1000 /* Millisecond to jiffies*/

 /*
  * nss_wifili_pvt
  *	Private data structure
  */
 static struct nss_wifili_pvt {
 	struct semaphore sem;
 	struct completion complete;
 	int response;
 	void *cb;
 	void *app_data;
 } wifili_pvt;

 /*
  * nss_wifili_stats_sync()
  *	Handle the syncing of WIFI stats.
  */
 static void nss_wifili_stats_sync(struct nss_ctx_instance *nss_ctx,
 		struct nss_wifili_stats_sync_msg *stats, uint16_t interface)
 {
 	return;
 }

 /*
  * nss_wifili_handler()
  *	Handle NSS -> HLOS messages for wifi
  */
 static void nss_wifili_handler(struct nss_ctx_instance *nss_ctx, struct nss_cmn_msg *ncm, __attribute__((unused))void *app_data)
 {
 	struct nss_wifili_msg *ntm = (struct nss_wifili_msg *)ncm;
 	void *ctx;
 	nss_wifili_msg_callback_t cb;

 	nss_info("%p: NSS->HLOS message for wifili\n", nss_ctx);

 	/*
 	 * The interface number shall be wifili soc interface or wifili radio interface
 	 */
 	BUG_ON((nss_is_dynamic_interface(ncm->interface)) || ncm->interface != NSS_WIFILI_INTERFACE);

 	/*
 	 * Is this a valid request/response packet?
 	 */
 	if (ncm->type >= NSS_WIFILI_MAX_MSG) {
 		nss_warning("%p: Received invalid message %d for wifili interface", nss_ctx, ncm->type);
 		return;
 	}

 	if (nss_cmn_get_msg_len(ncm) > sizeof(struct nss_wifili_msg)) {
 		nss_warning("%p: Length of message is greater than required: %d", nss_ctx, nss_cmn_get_msg_len(ncm));
 		return;
 	}

 	/*
 	 * Snoop messages for local driver and handle
 	 */
 	switch (ntm->cm.type) {
 	case NSS_WIFILI_PDEV_STATS_SYNC_MSG:
 		nss_wifili_stats_sync(nss_ctx, &ntm->msg.wlsoc_stats, ncm->interface);
 		break;
 	}

 	/*
 	 * Update the callback and app_data for notify messages, wifili sends all notify messages
 	 * to the same callback/app_data.
 	 */
 	if (ncm->response == NSS_CMM_RESPONSE_NOTIFY) {
 		ncm->cb = (nss_ptr_t)nss_ctx->nss_top->wifili_msg_callback;
 	}

 	/*
 	 * Log failures
 	 */
 	nss_core_log_msg_failures(nss_ctx, ncm);

 	/*
 	 * Do we have a call back
 	 */
 	if (!ncm->cb) {
 		nss_info("%p: cb null for wifili interface %d", nss_ctx, ncm->interface);
 		return;
 	}

 	/*
 	 * Get callback & context
 	 */
 	cb = (nss_wifili_msg_callback_t)ncm->cb;
 	ctx = nss_ctx->subsys_dp_register[ncm->interface].ndev;

 	/*
 	 * call wifili msg callback
 	 */
 	if (!ctx) {
 		nss_warning("%p: Event received for wifili interface %d before registration", nss_ctx, ncm->interface);
 		return;
 	}

 	cb(ctx, ntm);
 }

 /*
  * nss_wifili_callback()
  *	Callback to handle the completion of NSS->HLOS messages.
  */
 static void nss_wifili_callback(void *app_data, struct nss_wifili_msg *nvm)
 {
 	nss_wifili_msg_callback_t callback = (nss_wifili_msg_callback_t)wifili_pvt.cb;
 	void *data = wifili_pvt.app_data;

 	wifili_pvt.response = NSS_TX_SUCCESS;
 	wifili_pvt.cb = NULL;
 	wifili_pvt.app_data = NULL;

 	if (nvm->cm.response != NSS_CMN_RESPONSE_ACK) {
 		nss_warning("wifili error response %d\n", nvm->cm.response);
 		wifili_pvt.response = nvm->cm.response;
 	}

 	if (callback) {
 		callback(data, nvm);
 	}
 	complete(&wifili_pvt.complete);
 }

 /*
  * nss_wifili_tx_msg
  *	Transmit a wifili message to NSS FW
  *
  * NOTE: The caller is expected to handle synchronous wait for message
  * response if needed.
  */
 nss_tx_status_t nss_wifili_tx_msg(struct nss_ctx_instance *nss_ctx, struct nss_wifili_msg *msg)
 {
 	struct nss_wifili_msg *nm;
 	struct nss_cmn_msg *ncm = &msg->cm;
 	struct sk_buff *nbuf;
 	int32_t status;

 	NSS_VERIFY_CTX_MAGIC(nss_ctx);

 	if (unlikely(nss_ctx->state != NSS_CORE_STATE_INITIALIZED)) {
 		nss_warning("%p: wifili message dropped as core not ready", nss_ctx);
 		return NSS_TX_FAILURE_NOT_READY;
 	}

 	if (ncm->type >= NSS_WIFILI_MAX_MSG) {
 		nss_warning("%p: wifili message type out of range: %d", nss_ctx, ncm->type);
 		return NSS_TX_FAILURE;
 	}

 	if (nss_cmn_get_msg_len(ncm) > sizeof(struct nss_wifili_msg)) {
 		nss_warning("%p: wifili message length is invalid: %d", nss_ctx, nss_cmn_get_msg_len(ncm));
 		return NSS_TX_FAILURE;
 	}

 	/*
 	 * The interface number shall be wifili soc interface or wifili radio interface
 	 */
 	if (ncm->interface != NSS_WIFILI_INTERFACE) {
 		nss_warning("%p: tx request for interface that is not a wifili: %d", nss_ctx, ncm->interface);
 		return NSS_TX_FAILURE;
 	}

 	nbuf = dev_alloc_skb(NSS_NBUF_PAYLOAD_SIZE);
 	if (unlikely(!nbuf)) {
 		spin_lock_bh(&nss_ctx->nss_top->stats_lock);
 		NSS_PKT_STATS_INCREMENT(nss_ctx, &nss_ctx->nss_top->stats_drv[NSS_STATS_DRV_NBUF_ALLOC_FAILS]);
 		spin_unlock_bh(&nss_ctx->nss_top->stats_lock);
 		nss_warning("%p: wifili message failed as command allocation failed", nss_ctx);
 		return NSS_TX_FAILURE;
 	}

 	/*
 	 * Copy the message to our skb
 	 */
 	nm = (struct nss_wifili_msg *)skb_put(nbuf, sizeof(struct nss_wifili_msg));
 	memcpy(nm, msg, sizeof(struct nss_wifili_msg));

 	status = nss_core_send_buffer(nss_ctx, 0, nbuf, NSS_IF_CMD_QUEUE, H2N_BUFFER_CTRL, 0);
 	if (status != NSS_CORE_STATUS_SUCCESS) {
 		dev_kfree_skb_any(nbuf);
 		nss_warning("%p: Unable to enqueue 'wifili message'", nss_ctx);
 		return NSS_TX_FAILURE;
 	}

 	nss_hal_send_interrupt(nss_ctx, NSS_H2N_INTR_DATA_COMMAND_QUEUE);

 	NSS_PKT_STATS_INCREMENT(nss_ctx, &nss_ctx->nss_top->stats_drv[NSS_STATS_DRV_TX_CMD_REQ]);

 	return NSS_TX_SUCCESS;
 }
 EXPORT_SYMBOL(nss_wifili_tx_msg);

 /*
  * nss_wifili_tx_msg_sync()
  *	Transmit a wifili message to NSS firmware synchronously.
  */
 nss_tx_status_t nss_wifili_tx_msg_sync(struct nss_ctx_instance *nss_ctx, struct nss_wifili_msg *nvm)
 {
 	nss_tx_status_t status;
 	int ret = 0;

 	down(&wifili_pvt.sem);
 	wifili_pvt.cb = (void *)nvm->cm.cb;
 	wifili_pvt.app_data = (void *)nvm->cm.app_data;

 	nvm->cm.cb = (nss_ptr_t)nss_wifili_callback;
 	nvm->cm.app_data = (nss_ptr_t)NULL;

 	status = nss_wifili_tx_msg(nss_ctx, nvm);
 	if (status != NSS_TX_SUCCESS) {
 		nss_warning("%p: wifili_tx_msg failed\n", nss_ctx);
 		up(&wifili_pvt.sem);
 		return status;
 	}

 	ret = wait_for_completion_timeout(&wifili_pvt.complete, msecs_to_jiffies(NSS_WIFILI_TX_TIMEOUT));
 	if (!ret) {
 		nss_warning("%p: wifili msg tx failed due to timeout\n", nss_ctx);
 		wifili_pvt.response = NSS_TX_FAILURE;
 	}

 	status = wifili_pvt.response;
 	up(&wifili_pvt.sem);
 	return status;
 }
 EXPORT_SYMBOL(nss_wifili_tx_msg_sync);

 /*
  * nss_wifili_get_context()
  */
 struct nss_ctx_instance *nss_wifili_get_context(void)
 {
 	return (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id];
 }
 EXPORT_SYMBOL(nss_wifili_get_context);

 /*
  * nss_wifili_msg_init()
  *	Initialize nss_wifili_msg.
  */
 void nss_wifili_msg_init(struct nss_wifili_msg *ncm, uint16_t if_num, uint32_t type, uint32_t len, void *cb, void *app_data)
 {
 	nss_cmn_msg_init(&ncm->cm, if_num, type, len, cb, app_data);
 }
 EXPORT_SYMBOL(nss_wifili_msg_init);

 /*
  ****************************************
  * Register/Unregister/Miscellaneous APIs
  ****************************************
  */

 /*
  * nss_register_wifili_if()
  *	Register wifili with nss driver
  */
 struct nss_ctx_instance *nss_register_wifili_if(uint32_t if_num, nss_wifili_callback_t wifili_callback,
 			nss_wifili_callback_t wifili_ext_callback,
 			nss_wifili_msg_callback_t event_callback, struct net_device *netdev, uint32_t features)
 {
 	struct nss_ctx_instance *nss_ctx = (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id];

 	/*
 	 * The interface number shall be wifili soc interface
 	 */
 	nss_assert(if_num == NSS_WIFILI_INTERFACE);

         nss_info("nss_register_wifili_if if_num %d wifictx %p", if_num, netdev);

 	nss_ctx->subsys_dp_register[if_num].ndev = netdev;
 	nss_ctx->subsys_dp_register[if_num].cb = wifili_callback;
 	nss_ctx->subsys_dp_register[if_num].ext_cb = wifili_ext_callback;
 	nss_ctx->subsys_dp_register[if_num].app_data = NULL;
 	nss_ctx->subsys_dp_register[if_num].features = features;

 	nss_top_main.wifili_msg_callback = event_callback;
 	nss_core_register_handler(if_num, nss_wifili_handler, NULL);

 	return (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id];
 }
 EXPORT_SYMBOL(nss_register_wifili_if);

 /*
  * nss_unregister_wifili_if()
  *	Unregister wifili with nss driver
  */
 void nss_unregister_wifili_if(uint32_t if_num)
 {
 	struct nss_ctx_instance *nss_ctx = (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id];

 	/*
 	 * The interface number shall be wifili soc interface
 	 */
 	nss_assert(if_num == NSS_WIFILI_INTERFACE);

 	nss_ctx->subsys_dp_register[if_num].ndev = NULL;
 	nss_ctx->subsys_dp_register[if_num].cb = NULL;
 	nss_ctx->subsys_dp_register[if_num].ext_cb = NULL;
 	nss_ctx->subsys_dp_register[if_num].app_data = NULL;
 	nss_ctx->subsys_dp_register[if_num].features = 0;
 }
 EXPORT_SYMBOL(nss_unregister_wifili_if);

 /*
  * nss_register_wifili_radio_if()
  *	Register wifili radio with nss driver
  */
 struct nss_ctx_instance *nss_register_wifili_radio_if(uint32_t if_num, nss_wifili_callback_t wifili_callback,
 			nss_wifili_callback_t wifili_ext_callback,
 			nss_wifili_msg_callback_t event_callback, struct net_device *netdev, uint32_t features)
 {
 	struct nss_ctx_instance *nss_ctx = (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id];

 	/*
 	 * The interface number shall be wifili radio dynamic interface
 	 */
 	nss_assert(nss_is_dynamic_interface(if_num));
         nss_info("nss_register_wifili_if if_num %d wifictx %p", if_num, netdev);

 	nss_ctx->subsys_dp_register[if_num].ndev = netdev;
 	nss_ctx->subsys_dp_register[if_num].cb = wifili_callback;
 	nss_ctx->subsys_dp_register[if_num].ext_cb = wifili_ext_callback;
 	nss_ctx->subsys_dp_register[if_num].app_data = NULL;
 	nss_ctx->subsys_dp_register[if_num].features = features;

 	return (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id];
 }
 EXPORT_SYMBOL(nss_register_wifili_radio_if);

 /*
  * nss_unregister_wifili_radio_if()
  *	Unregister wifili radio with nss driver
  */
 void nss_unregister_wifili_radio_if(uint32_t if_num)
 {
 	struct nss_ctx_instance *nss_ctx = (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id];

 	/*
 	 * The interface number shall be wifili radio dynamic interface
 	 */
 	nss_assert(nss_is_dynamic_interface(if_num));

 	nss_ctx->subsys_dp_register[if_num].ndev = NULL;
 	nss_ctx->subsys_dp_register[if_num].cb = NULL;
 	nss_ctx->subsys_dp_register[if_num].ext_cb = NULL;
 	nss_ctx->subsys_dp_register[if_num].app_data = NULL;
 	nss_ctx->subsys_dp_register[if_num].features = 0;
 }
 EXPORT_SYMBOL(nss_unregister_wifili_radio_if);

 /*
  * nss_wifili_register_handler()
  *	Register handle for notfication messages received on wifi interface
  */
 void nss_wifili_register_handler(void )
 {
 	nss_info("nss_wifili_register_handler");
 	nss_core_register_handler(NSS_WIFILI_INTERFACE, nss_wifili_handler, NULL);

 	sema_init(&wifili_pvt.sem, 1);
 	init_completion(&wifili_pvt.complete);
 }
	/*
	**************************************************************************
	* Copyright (c) 2017, The Linux Foundation. All rights reserved.
	* Permission to use, copy, modify, and/or distribute this software for
	* any purpose with or without fee is hereby granted, provided that the
	* above copyright notice and this permission notice appear in all copies.
	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
	* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	**************************************************************************
	*/

	#include "nss_tx_rx_common.h"

	#define NSS_WIFILI_TX_TIMEOUT 1000 /* Millisecond to jiffies*/

	/*
	* nss_wifili_pvt
	* Private data structure
	*/
	static struct nss_wifili_pvt {
	struct semaphore sem;
	struct completion complete;
	int response;
	void *cb;
	void *app_data;
	} wifili_pvt;

	/*
	* nss_wifili_stats_sync()
	* Handle the syncing of WIFI stats.
	*/
	static void nss_wifili_stats_sync(struct nss_ctx_instance *nss_ctx,
	struct nss_wifili_stats_sync_msg *stats, uint16_t interface)
	{
	return;
	}

	/*
	* nss_wifili_handler()
	* Handle NSS -> HLOS messages for wifi
	*/
	static void nss_wifili_handler(struct nss_ctx_instance nss_ctx, struct nss_cmn_msg ncm, __attribute__((unused))void *app_data)
	{
	struct nss_wifili_msg ntm = (struct nss_wifili_msg )ncm;
	void *ctx;
	nss_wifili_msg_callback_t cb;

	nss_info("%p: NSS->HLOS message for wifili\n", nss_ctx);

	/*
	* The interface number shall be wifili soc interface or wifili radio interface
	*/
	BUG_ON((nss_is_dynamic_interface(ncm->interface)) \|\| ncm->interface != NSS_WIFILI_INTERFACE);

	/*
	* Is this a valid request/response packet?
	*/
	if (ncm->type >= NSS_WIFILI_MAX_MSG) {
	nss_warning("%p: Received invalid message %d for wifili interface", nss_ctx, ncm->type);
	return;
	}

	if (nss_cmn_get_msg_len(ncm) > sizeof(struct nss_wifili_msg)) {
	nss_warning("%p: Length of message is greater than required: %d", nss_ctx, nss_cmn_get_msg_len(ncm));
	return;
	}

	/*
	* Snoop messages for local driver and handle
	*/
	switch (ntm->cm.type) {
	case NSS_WIFILI_PDEV_STATS_SYNC_MSG:
	nss_wifili_stats_sync(nss_ctx, &ntm->msg.wlsoc_stats, ncm->interface);
	break;
	}

	/*
	* Update the callback and app_data for notify messages, wifili sends all notify messages
	* to the same callback/app_data.
	*/
	if (ncm->response == NSS_CMM_RESPONSE_NOTIFY) {
	ncm->cb = (nss_ptr_t)nss_ctx->nss_top->wifili_msg_callback;
	}

	/*
	* Log failures
	*/
	nss_core_log_msg_failures(nss_ctx, ncm);

	/*
	* Do we have a call back
	*/
	if (!ncm->cb) {
	nss_info("%p: cb null for wifili interface %d", nss_ctx, ncm->interface);
	return;
	}

	/*
	* Get callback & context
	*/
	cb = (nss_wifili_msg_callback_t)ncm->cb;
	ctx = nss_ctx->subsys_dp_register[ncm->interface].ndev;

	/*
	* call wifili msg callback
	*/
	if (!ctx) {
	nss_warning("%p: Event received for wifili interface %d before registration", nss_ctx, ncm->interface);
	return;
	}

	cb(ctx, ntm);
	}

	/*
	* nss_wifili_callback()
	* Callback to handle the completion of NSS->HLOS messages.
	*/
	static void nss_wifili_callback(void app_data, struct nss_wifili_msg nvm)
	{
	nss_wifili_msg_callback_t callback = (nss_wifili_msg_callback_t)wifili_pvt.cb;
	void *data = wifili_pvt.app_data;

	wifili_pvt.response = NSS_TX_SUCCESS;
	wifili_pvt.cb = NULL;
	wifili_pvt.app_data = NULL;

	if (nvm->cm.response != NSS_CMN_RESPONSE_ACK) {
	nss_warning("wifili error response %d\n", nvm->cm.response);
	wifili_pvt.response = nvm->cm.response;
	}

	if (callback) {
	callback(data, nvm);
	}
	complete(&wifili_pvt.complete);
	}

	/*
	* nss_wifili_tx_msg
	* Transmit a wifili message to NSS FW
	*
	* NOTE: The caller is expected to handle synchronous wait for message
	* response if needed.
	*/
	nss_tx_status_t nss_wifili_tx_msg(struct nss_ctx_instance nss_ctx, struct nss_wifili_msg msg)
	{
	struct nss_wifili_msg *nm;
	struct nss_cmn_msg *ncm = &msg->cm;
	struct sk_buff *nbuf;
	int32_t status;

	NSS_VERIFY_CTX_MAGIC(nss_ctx);

	if (unlikely(nss_ctx->state != NSS_CORE_STATE_INITIALIZED)) {
	nss_warning("%p: wifili message dropped as core not ready", nss_ctx);
	return NSS_TX_FAILURE_NOT_READY;
	}

	if (ncm->type >= NSS_WIFILI_MAX_MSG) {
	nss_warning("%p: wifili message type out of range: %d", nss_ctx, ncm->type);
	return NSS_TX_FAILURE;
	}

	if (nss_cmn_get_msg_len(ncm) > sizeof(struct nss_wifili_msg)) {
	nss_warning("%p: wifili message length is invalid: %d", nss_ctx, nss_cmn_get_msg_len(ncm));
	return NSS_TX_FAILURE;
	}

	/*
	* The interface number shall be wifili soc interface or wifili radio interface
	*/
	if (ncm->interface != NSS_WIFILI_INTERFACE) {
	nss_warning("%p: tx request for interface that is not a wifili: %d", nss_ctx, ncm->interface);
	return NSS_TX_FAILURE;
	}

	nbuf = dev_alloc_skb(NSS_NBUF_PAYLOAD_SIZE);
	if (unlikely(!nbuf)) {
	spin_lock_bh(&nss_ctx->nss_top->stats_lock);
	NSS_PKT_STATS_INCREMENT(nss_ctx, &nss_ctx->nss_top->stats_drv[NSS_STATS_DRV_NBUF_ALLOC_FAILS]);
	spin_unlock_bh(&nss_ctx->nss_top->stats_lock);
	nss_warning("%p: wifili message failed as command allocation failed", nss_ctx);
	return NSS_TX_FAILURE;
	}

	/*
	* Copy the message to our skb
	*/
	nm = (struct nss_wifili_msg *)skb_put(nbuf, sizeof(struct nss_wifili_msg));
	memcpy(nm, msg, sizeof(struct nss_wifili_msg));

	status = nss_core_send_buffer(nss_ctx, 0, nbuf, NSS_IF_CMD_QUEUE, H2N_BUFFER_CTRL, 0);
	if (status != NSS_CORE_STATUS_SUCCESS) {
	dev_kfree_skb_any(nbuf);
	nss_warning("%p: Unable to enqueue 'wifili message'", nss_ctx);
	return NSS_TX_FAILURE;
	}

	nss_hal_send_interrupt(nss_ctx, NSS_H2N_INTR_DATA_COMMAND_QUEUE);

	NSS_PKT_STATS_INCREMENT(nss_ctx, &nss_ctx->nss_top->stats_drv[NSS_STATS_DRV_TX_CMD_REQ]);

	return NSS_TX_SUCCESS;
	}
	EXPORT_SYMBOL(nss_wifili_tx_msg);

	/*
	* nss_wifili_tx_msg_sync()
	* Transmit a wifili message to NSS firmware synchronously.
	*/
	nss_tx_status_t nss_wifili_tx_msg_sync(struct nss_ctx_instance nss_ctx, struct nss_wifili_msg nvm)
	{
	nss_tx_status_t status;
	int ret = 0;

	down(&wifili_pvt.sem);
	wifili_pvt.cb = (void *)nvm->cm.cb;
	wifili_pvt.app_data = (void *)nvm->cm.app_data;

	nvm->cm.cb = (nss_ptr_t)nss_wifili_callback;
	nvm->cm.app_data = (nss_ptr_t)NULL;

	status = nss_wifili_tx_msg(nss_ctx, nvm);
	if (status != NSS_TX_SUCCESS) {
	nss_warning("%p: wifili_tx_msg failed\n", nss_ctx);
	up(&wifili_pvt.sem);
	return status;
	}

	ret = wait_for_completion_timeout(&wifili_pvt.complete, msecs_to_jiffies(NSS_WIFILI_TX_TIMEOUT));
	if (!ret) {
	nss_warning("%p: wifili msg tx failed due to timeout\n", nss_ctx);
	wifili_pvt.response = NSS_TX_FAILURE;
	}

	status = wifili_pvt.response;
	up(&wifili_pvt.sem);
	return status;
	}
	EXPORT_SYMBOL(nss_wifili_tx_msg_sync);

	/*
	* nss_wifili_get_context()
	*/
	struct nss_ctx_instance *nss_wifili_get_context(void)
	{
	return (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id];
	}
	EXPORT_SYMBOL(nss_wifili_get_context);

	/*
	* nss_wifili_msg_init()
	* Initialize nss_wifili_msg.
	*/
	void nss_wifili_msg_init(struct nss_wifili_msg ncm, uint16_t if_num, uint32_t type, uint32_t len, void cb, void *app_data)
	{
	nss_cmn_msg_init(&ncm->cm, if_num, type, len, cb, app_data);
	}
	EXPORT_SYMBOL(nss_wifili_msg_init);

	/*
	****************************************
	* Register/Unregister/Miscellaneous APIs
	****************************************
	*/

	/*
	* nss_register_wifili_if()
	* Register wifili with nss driver
	*/
	struct nss_ctx_instance *nss_register_wifili_if(uint32_t if_num, nss_wifili_callback_t wifili_callback,
	nss_wifili_callback_t wifili_ext_callback,
	nss_wifili_msg_callback_t event_callback, struct net_device *netdev, uint32_t features)
	{
	struct nss_ctx_instance nss_ctx = (struct nss_ctx_instance )&nss_top_main.nss[nss_top_main.wifi_handler_id];

	/*
	* The interface number shall be wifili soc interface
	*/
	nss_assert(if_num == NSS_WIFILI_INTERFACE);

	nss_info("nss_register_wifili_if if_num %d wifictx %p", if_num, netdev);

	nss_ctx->subsys_dp_register[if_num].ndev = netdev;
	nss_ctx->subsys_dp_register[if_num].cb = wifili_callback;
	nss_ctx->subsys_dp_register[if_num].ext_cb = wifili_ext_callback;
	nss_ctx->subsys_dp_register[if_num].app_data = NULL;
	nss_ctx->subsys_dp_register[if_num].features = features;

	nss_top_main.wifili_msg_callback = event_callback;
	nss_core_register_handler(if_num, nss_wifili_handler, NULL);

	return (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id];
	}
	EXPORT_SYMBOL(nss_register_wifili_if);

	/*
	* nss_unregister_wifili_if()
	* Unregister wifili with nss driver
	*/
	void nss_unregister_wifili_if(uint32_t if_num)
	{
	struct nss_ctx_instance nss_ctx = (struct nss_ctx_instance )&nss_top_main.nss[nss_top_main.wifi_handler_id];

	/*
	* The interface number shall be wifili soc interface
	*/
	nss_assert(if_num == NSS_WIFILI_INTERFACE);

	nss_ctx->subsys_dp_register[if_num].ndev = NULL;
	nss_ctx->subsys_dp_register[if_num].cb = NULL;
	nss_ctx->subsys_dp_register[if_num].ext_cb = NULL;
	nss_ctx->subsys_dp_register[if_num].app_data = NULL;
	nss_ctx->subsys_dp_register[if_num].features = 0;
	}
	EXPORT_SYMBOL(nss_unregister_wifili_if);

	/*
	* nss_register_wifili_radio_if()
	* Register wifili radio with nss driver
	*/
	struct nss_ctx_instance *nss_register_wifili_radio_if(uint32_t if_num, nss_wifili_callback_t wifili_callback,
	nss_wifili_callback_t wifili_ext_callback,
	nss_wifili_msg_callback_t event_callback, struct net_device *netdev, uint32_t features)
	{
	struct nss_ctx_instance nss_ctx = (struct nss_ctx_instance )&nss_top_main.nss[nss_top_main.wifi_handler_id];

	/*
	* The interface number shall be wifili radio dynamic interface
	*/
	nss_assert(nss_is_dynamic_interface(if_num));
	nss_info("nss_register_wifili_if if_num %d wifictx %p", if_num, netdev);

	nss_ctx->subsys_dp_register[if_num].ndev = netdev;
	nss_ctx->subsys_dp_register[if_num].cb = wifili_callback;
	nss_ctx->subsys_dp_register[if_num].ext_cb = wifili_ext_callback;
	nss_ctx->subsys_dp_register[if_num].app_data = NULL;
	nss_ctx->subsys_dp_register[if_num].features = features;

	return (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.wifi_handler_id];
	}
	EXPORT_SYMBOL(nss_register_wifili_radio_if);

	/*
	* nss_unregister_wifili_radio_if()
	* Unregister wifili radio with nss driver
	*/
	void nss_unregister_wifili_radio_if(uint32_t if_num)
	{
	struct nss_ctx_instance nss_ctx = (struct nss_ctx_instance )&nss_top_main.nss[nss_top_main.wifi_handler_id];

	/*
	* The interface number shall be wifili radio dynamic interface
	*/
	nss_assert(nss_is_dynamic_interface(if_num));

	nss_ctx->subsys_dp_register[if_num].ndev = NULL;
	nss_ctx->subsys_dp_register[if_num].cb = NULL;
	nss_ctx->subsys_dp_register[if_num].ext_cb = NULL;
	nss_ctx->subsys_dp_register[if_num].app_data = NULL;
	nss_ctx->subsys_dp_register[if_num].features = 0;
	}
	EXPORT_SYMBOL(nss_unregister_wifili_radio_if);

	/*
	* nss_wifili_register_handler()
	* Register handle for notfication messages received on wifi interface
	*/
	void nss_wifili_register_handler(void )
	{
	nss_info("nss_wifili_register_handler");
	nss_core_register_handler(NSS_WIFILI_INTERFACE, nss_wifili_handler, NULL);

	sema_init(&wifili_pvt.sem, 1);
	init_completion(&wifili_pvt.complete);
	}