drivers/net/wireless/libertas/cmdresp.c - arm/linux-arm64-legacy - Git at Google

 /**
   * This file contains the handling of command
   * responses as well as events generated by firmware.
   */
 #include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/sched.h>
 #include <asm/unaligned.h>
 #include <net/cfg80211.h>

 #include "cfg.h"
 #include "cmd.h"

 /**
  *  @brief This function handles disconnect event. it
  *  reports disconnect to upper layer, clean tx/rx packets,
  *  reset link state etc.
  *
  *  @param priv    A pointer to struct lbs_private structure
  *  @return 	   n/a
  */
 void lbs_mac_event_disconnected(struct lbs_private *priv)
 {
 	if (priv->connect_status != LBS_CONNECTED)
 		return;

 	lbs_deb_enter(LBS_DEB_ASSOC);

 	/*
 	 * Cisco AP sends EAP failure and de-auth in less than 0.5 ms.
 	 * It causes problem in the Supplicant
 	 */
 	msleep_interruptible(1000);

 	if (priv->wdev->iftype == NL80211_IFTYPE_STATION)
 		lbs_send_disconnect_notification(priv);

 	/* report disconnect to upper layer */
 	netif_stop_queue(priv->dev);
 	netif_carrier_off(priv->dev);

 	/* Free Tx and Rx packets */
 	kfree_skb(priv->currenttxskb);
 	priv->currenttxskb = NULL;
 	priv->tx_pending_len = 0;

 	priv->connect_status = LBS_DISCONNECTED;

 	if (priv->psstate != PS_STATE_FULL_POWER) {
 		/* make firmware to exit PS mode */
 		lbs_deb_cmd("disconnected, so exit PS mode\n");
 		lbs_ps_wakeup(priv, 0);
 	}
 	lbs_deb_leave(LBS_DEB_ASSOC);
 }

 static int lbs_ret_reg_access(struct lbs_private *priv,
 			       u16 type, struct cmd_ds_command *resp)
 {
 	int ret = 0;

 	lbs_deb_enter(LBS_DEB_CMD);

 	switch (type) {
 	case CMD_RET(CMD_MAC_REG_ACCESS):
 		{
 			struct cmd_ds_mac_reg_access *reg = &resp->params.macreg;

 			priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
 			priv->offsetvalue.value = le32_to_cpu(reg->value);
 			break;
 		}

 	case CMD_RET(CMD_BBP_REG_ACCESS):
 		{
 			struct cmd_ds_bbp_reg_access *reg = &resp->params.bbpreg;

 			priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
 			priv->offsetvalue.value = reg->value;
 			break;
 		}

 	case CMD_RET(CMD_RF_REG_ACCESS):
 		{
 			struct cmd_ds_rf_reg_access *reg = &resp->params.rfreg;

 			priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
 			priv->offsetvalue.value = reg->value;
 			break;
 		}

 	default:
 		ret = -1;
 	}

 	lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 	return ret;
 }

 /**
  *  @brief This function parses countryinfo from AP and download country info to FW
  *  @param priv    pointer to struct lbs_private
  *  @param resp    pointer to command response buffer
  *  @return        0; -1
  */
 static int lbs_ret_802_11d_domain_info(struct cmd_ds_command *resp)
 {
 	struct cmd_ds_802_11d_domain_info *domaininfo =
 			&resp->params.domaininforesp;
 	struct mrvl_ie_domain_param_set *domain = &domaininfo->domain;
 	u16 action = le16_to_cpu(domaininfo->action);
 	s16 ret = 0;
 	u8 nr_triplet = 0;

 	lbs_deb_enter(LBS_DEB_11D);

 	lbs_deb_hex(LBS_DEB_11D, "domain info resp", (u8 *) resp,
 			(int)le16_to_cpu(resp->size));

 	nr_triplet = (le16_to_cpu(domain->header.len) - COUNTRY_CODE_LEN) /
 		sizeof(struct ieee80211_country_ie_triplet);

 	lbs_deb_11d("domain info resp: nr_triplet %d\n", nr_triplet);

 	if (nr_triplet > MRVDRV_MAX_TRIPLET_802_11D) {
 		lbs_deb_11d("invalid number of triplets returned!!\n");
 		return -1;
 	}

 	switch (action) {
 	case CMD_ACT_SET:	/*Proc set action */
 		break;

 	case CMD_ACT_GET:
 		break;
 	default:
 		lbs_deb_11d("invalid action:%d\n", domaininfo->action);
 		ret = -1;
 		break;
 	}

 	lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
 	return ret;
 }

 static inline int handle_cmd_response(struct lbs_private *priv,
 				      struct cmd_header *cmd_response)
 {
 	struct cmd_ds_command *resp = (struct cmd_ds_command *) cmd_response;
 	int ret = 0;
 	unsigned long flags;
 	uint16_t respcmd = le16_to_cpu(resp->command);

 	lbs_deb_enter(LBS_DEB_HOST);

 	switch (respcmd) {
 	case CMD_RET(CMD_MAC_REG_ACCESS):
 	case CMD_RET(CMD_BBP_REG_ACCESS):
 	case CMD_RET(CMD_RF_REG_ACCESS):
 		ret = lbs_ret_reg_access(priv, respcmd, resp);
 		break;

 	case CMD_RET(CMD_802_11_SET_AFC):
 	case CMD_RET(CMD_802_11_GET_AFC):
 		spin_lock_irqsave(&priv->driver_lock, flags);
 		memmove((void *)priv->cur_cmd->callback_arg, &resp->params.afc,
 			sizeof(struct cmd_ds_802_11_afc));
 		spin_unlock_irqrestore(&priv->driver_lock, flags);

 		break;

 	case CMD_RET(CMD_802_11_BEACON_STOP):
 		break;

 	case CMD_RET(CMD_802_11_RSSI):
 		ret = lbs_ret_802_11_rssi(priv, resp);
 		break;

 	case CMD_RET(CMD_802_11D_DOMAIN_INFO):
 		ret = lbs_ret_802_11d_domain_info(resp);
 		break;

 	case CMD_RET(CMD_802_11_TPC_CFG):
 		spin_lock_irqsave(&priv->driver_lock, flags);
 		memmove((void *)priv->cur_cmd->callback_arg, &resp->params.tpccfg,
 			sizeof(struct cmd_ds_802_11_tpc_cfg));
 		spin_unlock_irqrestore(&priv->driver_lock, flags);
 		break;

 	case CMD_RET(CMD_BT_ACCESS):
 		spin_lock_irqsave(&priv->driver_lock, flags);
 		if (priv->cur_cmd->callback_arg)
 			memcpy((void *)priv->cur_cmd->callback_arg,
 			       &resp->params.bt.addr1, 2 * ETH_ALEN);
 		spin_unlock_irqrestore(&priv->driver_lock, flags);
 		break;
 	case CMD_RET(CMD_FWT_ACCESS):
 		spin_lock_irqsave(&priv->driver_lock, flags);
 		if (priv->cur_cmd->callback_arg)
 			memcpy((void *)priv->cur_cmd->callback_arg, &resp->params.fwt,
 			       sizeof(resp->params.fwt));
 		spin_unlock_irqrestore(&priv->driver_lock, flags);
 		break;
 	case CMD_RET(CMD_802_11_BEACON_CTRL):
 		ret = lbs_ret_802_11_bcn_ctrl(priv, resp);
 		break;

 	default:
 		lbs_pr_err("CMD_RESP: unknown cmd response 0x%04x\n",
 			   le16_to_cpu(resp->command));
 		break;
 	}
 	lbs_deb_leave(LBS_DEB_HOST);
 	return ret;
 }

 int lbs_process_command_response(struct lbs_private *priv, u8 *data, u32 len)
 {
 	uint16_t respcmd, curcmd;
 	struct cmd_header *resp;
 	int ret = 0;
 	unsigned long flags;
 	uint16_t result;

 	lbs_deb_enter(LBS_DEB_HOST);

 	mutex_lock(&priv->lock);
 	spin_lock_irqsave(&priv->driver_lock, flags);

 	if (!priv->cur_cmd) {
 		lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
 		ret = -1;
 		spin_unlock_irqrestore(&priv->driver_lock, flags);
 		goto done;
 	}

 	resp = (void *)data;
 	curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command);
 	respcmd = le16_to_cpu(resp->command);
 	result = le16_to_cpu(resp->result);

 	lbs_deb_cmd("CMD_RESP: response 0x%04x, seq %d, size %d\n",
 		     respcmd, le16_to_cpu(resp->seqnum), len);
 	lbs_deb_hex(LBS_DEB_CMD, "CMD_RESP", (void *) resp, len);

 	if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) {
 		lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
 			    le16_to_cpu(resp->seqnum), le16_to_cpu(priv->cur_cmd->cmdbuf->seqnum));
 		spin_unlock_irqrestore(&priv->driver_lock, flags);
 		ret = -1;
 		goto done;
 	}
 	if (respcmd != CMD_RET(curcmd) &&
 	    respcmd != CMD_RET_802_11_ASSOCIATE && curcmd != CMD_802_11_ASSOCIATE) {
 		lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd, curcmd);
 		spin_unlock_irqrestore(&priv->driver_lock, flags);
 		ret = -1;
 		goto done;
 	}

 	if (resp->result == cpu_to_le16(0x0004)) {
 		/* 0x0004 means -EAGAIN. Drop the response, let it time out
 		   and be resubmitted */
 		lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
 			    le16_to_cpu(resp->command));
 		spin_unlock_irqrestore(&priv->driver_lock, flags);
 		ret = -1;
 		goto done;
 	}

 	/* Now we got response from FW, cancel the command timer */
 	del_timer(&priv->command_timer);
 	priv->cmd_timed_out = 0;

 	/* Store the response code to cur_cmd_retcode. */
 	priv->cur_cmd_retcode = result;

 	if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
 		struct cmd_ds_802_11_ps_mode *psmode = (void *) &resp[1];
 		u16 action = le16_to_cpu(psmode->action);

 		lbs_deb_host(
 		       "CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
 		       result, action);

 		if (result) {
 			lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
 				    result);
 			/*
 			 * We should not re-try enter-ps command in
 			 * ad-hoc mode. It takes place in
 			 * lbs_execute_next_command().
 			 */
 			if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR &&
 			    action == CMD_SUBCMD_ENTER_PS)
 				priv->psmode = LBS802_11POWERMODECAM;
 		} else if (action == CMD_SUBCMD_ENTER_PS) {
 			priv->needtowakeup = 0;
 			priv->psstate = PS_STATE_AWAKE;

 			lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
 			if (priv->connect_status != LBS_CONNECTED) {
 				/*
 				 * When Deauth Event received before Enter_PS command
 				 * response, We need to wake up the firmware.
 				 */
 				lbs_deb_host(
 				       "disconnected, invoking lbs_ps_wakeup\n");

 				spin_unlock_irqrestore(&priv->driver_lock, flags);
 				mutex_unlock(&priv->lock);
 				lbs_ps_wakeup(priv, 0);
 				mutex_lock(&priv->lock);
 				spin_lock_irqsave(&priv->driver_lock, flags);
 			}
 		} else if (action == CMD_SUBCMD_EXIT_PS) {
 			priv->needtowakeup = 0;
 			priv->psstate = PS_STATE_FULL_POWER;
 			lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
 		} else {
 			lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
 		}

 		lbs_complete_command(priv, priv->cur_cmd, result);
 		spin_unlock_irqrestore(&priv->driver_lock, flags);

 		ret = 0;
 		goto done;
 	}

 	/* If the command is not successful, cleanup and return failure */
 	if ((result != 0 || !(respcmd & 0x8000))) {
 		lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
 		       result, respcmd);
 		/*
 		 * Handling errors here
 		 */
 		switch (respcmd) {
 		case CMD_RET(CMD_GET_HW_SPEC):
 		case CMD_RET(CMD_802_11_RESET):
 			lbs_deb_host("CMD_RESP: reset failed\n");
 			break;

 		}
 		lbs_complete_command(priv, priv->cur_cmd, result);
 		spin_unlock_irqrestore(&priv->driver_lock, flags);

 		ret = -1;
 		goto done;
 	}

 	spin_unlock_irqrestore(&priv->driver_lock, flags);

 	if (priv->cur_cmd && priv->cur_cmd->callback) {
 		ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
 				resp);
 	} else
 		ret = handle_cmd_response(priv, resp);

 	spin_lock_irqsave(&priv->driver_lock, flags);

 	if (priv->cur_cmd) {
 		/* Clean up and Put current command back to cmdfreeq */
 		lbs_complete_command(priv, priv->cur_cmd, result);
 	}
 	spin_unlock_irqrestore(&priv->driver_lock, flags);

 done:
 	mutex_unlock(&priv->lock);
 	lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 	return ret;
 }

 int lbs_process_event(struct lbs_private *priv, u32 event)
 {
 	int ret = 0;
 	struct cmd_header cmd;

 	lbs_deb_enter(LBS_DEB_CMD);

 	switch (event) {
 	case MACREG_INT_CODE_LINK_SENSED:
 		lbs_deb_cmd("EVENT: link sensed\n");
 		break;

 	case MACREG_INT_CODE_DEAUTHENTICATED:
 		lbs_deb_cmd("EVENT: deauthenticated\n");
 		lbs_mac_event_disconnected(priv);
 		break;

 	case MACREG_INT_CODE_DISASSOCIATED:
 		lbs_deb_cmd("EVENT: disassociated\n");
 		lbs_mac_event_disconnected(priv);
 		break;

 	case MACREG_INT_CODE_LINK_LOST_NO_SCAN:
 		lbs_deb_cmd("EVENT: link lost\n");
 		lbs_mac_event_disconnected(priv);
 		break;

 	case MACREG_INT_CODE_PS_SLEEP:
 		lbs_deb_cmd("EVENT: ps sleep\n");

 		/* handle unexpected PS SLEEP event */
 		if (priv->psstate == PS_STATE_FULL_POWER) {
 			lbs_deb_cmd(
 			       "EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
 			break;
 		}
 		priv->psstate = PS_STATE_PRE_SLEEP;

 		lbs_ps_confirm_sleep(priv);

 		break;

 	case MACREG_INT_CODE_HOST_AWAKE:
 		lbs_deb_cmd("EVENT: host awake\n");
 		if (priv->reset_deep_sleep_wakeup)
 			priv->reset_deep_sleep_wakeup(priv);
 		priv->is_deep_sleep = 0;
 		lbs_cmd_async(priv, CMD_802_11_WAKEUP_CONFIRM, &cmd,
 				sizeof(cmd));
 		priv->is_host_sleep_activated = 0;
 		wake_up_interruptible(&priv->host_sleep_q);
 		break;

 	case MACREG_INT_CODE_DEEP_SLEEP_AWAKE:
 		if (priv->reset_deep_sleep_wakeup)
 			priv->reset_deep_sleep_wakeup(priv);
 		lbs_deb_cmd("EVENT: ds awake\n");
 		priv->is_deep_sleep = 0;
 		priv->wakeup_dev_required = 0;
 		wake_up_interruptible(&priv->ds_awake_q);
 		break;

 	case MACREG_INT_CODE_PS_AWAKE:
 		lbs_deb_cmd("EVENT: ps awake\n");
 		/* handle unexpected PS AWAKE event */
 		if (priv->psstate == PS_STATE_FULL_POWER) {
 			lbs_deb_cmd(
 			       "EVENT: In FULL POWER mode - ignore PS AWAKE\n");
 			break;
 		}

 		priv->psstate = PS_STATE_AWAKE;

 		if (priv->needtowakeup) {
 			/*
 			 * wait for the command processing to finish
 			 * before resuming sending
 			 * priv->needtowakeup will be set to FALSE
 			 * in lbs_ps_wakeup()
 			 */
 			lbs_deb_cmd("waking up ...\n");
 			lbs_ps_wakeup(priv, 0);
 		}
 		break;

 	case MACREG_INT_CODE_MIC_ERR_UNICAST:
 		lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
 		lbs_send_mic_failureevent(priv, event);
 		break;

 	case MACREG_INT_CODE_MIC_ERR_MULTICAST:
 		lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
 		lbs_send_mic_failureevent(priv, event);
 		break;

 	case MACREG_INT_CODE_MIB_CHANGED:
 		lbs_deb_cmd("EVENT: MIB CHANGED\n");
 		break;
 	case MACREG_INT_CODE_INIT_DONE:
 		lbs_deb_cmd("EVENT: INIT DONE\n");
 		break;
 	case MACREG_INT_CODE_ADHOC_BCN_LOST:
 		lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
 		break;
 	case MACREG_INT_CODE_RSSI_LOW:
 		lbs_pr_alert("EVENT: rssi low\n");
 		break;
 	case MACREG_INT_CODE_SNR_LOW:
 		lbs_pr_alert("EVENT: snr low\n");
 		break;
 	case MACREG_INT_CODE_MAX_FAIL:
 		lbs_pr_alert("EVENT: max fail\n");
 		break;
 	case MACREG_INT_CODE_RSSI_HIGH:
 		lbs_pr_alert("EVENT: rssi high\n");
 		break;
 	case MACREG_INT_CODE_SNR_HIGH:
 		lbs_pr_alert("EVENT: snr high\n");
 		break;

 	case MACREG_INT_CODE_MESH_AUTO_STARTED:
 		/* Ignore spurious autostart events */
 		lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
 		break;

 	default:
 		lbs_pr_alert("EVENT: unknown event id %d\n", event);
 		break;
 	}

 	lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 	return ret;
 }
	/**
	* This file contains the handling of command
	* responses as well as events generated by firmware.
	*/
	#include <linux/slab.h>
	#include <linux/delay.h>
	#include <linux/sched.h>
	#include <asm/unaligned.h>
	#include <net/cfg80211.h>

	#include "cfg.h"
	#include "cmd.h"

	/**
	* @brief This function handles disconnect event. it
	* reports disconnect to upper layer, clean tx/rx packets,
	* reset link state etc.
	*
	* @param priv A pointer to struct lbs_private structure
	* @return n/a
	*/
	void lbs_mac_event_disconnected(struct lbs_private *priv)
	{
	if (priv->connect_status != LBS_CONNECTED)
	return;

	lbs_deb_enter(LBS_DEB_ASSOC);

	/*
	* Cisco AP sends EAP failure and de-auth in less than 0.5 ms.
	* It causes problem in the Supplicant
	*/
	msleep_interruptible(1000);

	if (priv->wdev->iftype == NL80211_IFTYPE_STATION)
	lbs_send_disconnect_notification(priv);

	/* report disconnect to upper layer */
	netif_stop_queue(priv->dev);
	netif_carrier_off(priv->dev);

	/* Free Tx and Rx packets */
	kfree_skb(priv->currenttxskb);
	priv->currenttxskb = NULL;
	priv->tx_pending_len = 0;

	priv->connect_status = LBS_DISCONNECTED;

	if (priv->psstate != PS_STATE_FULL_POWER) {
	/* make firmware to exit PS mode */
	lbs_deb_cmd("disconnected, so exit PS mode\n");
	lbs_ps_wakeup(priv, 0);
	}
	lbs_deb_leave(LBS_DEB_ASSOC);
	}

	static int lbs_ret_reg_access(struct lbs_private *priv,
	u16 type, struct cmd_ds_command *resp)
	{
	int ret = 0;

	lbs_deb_enter(LBS_DEB_CMD);

	switch (type) {
	case CMD_RET(CMD_MAC_REG_ACCESS):
	{
	struct cmd_ds_mac_reg_access *reg = &resp->params.macreg;

	priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
	priv->offsetvalue.value = le32_to_cpu(reg->value);
	break;
	}

	case CMD_RET(CMD_BBP_REG_ACCESS):
	{
	struct cmd_ds_bbp_reg_access *reg = &resp->params.bbpreg;

	priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
	priv->offsetvalue.value = reg->value;
	break;
	}

	case CMD_RET(CMD_RF_REG_ACCESS):
	{
	struct cmd_ds_rf_reg_access *reg = &resp->params.rfreg;

	priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
	priv->offsetvalue.value = reg->value;
	break;
	}

	default:
	ret = -1;
	}

	lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
	return ret;
	}

	/**
	* @brief This function parses countryinfo from AP and download country info to FW
	* @param priv pointer to struct lbs_private
	* @param resp pointer to command response buffer
	* @return 0; -1
	*/
	static int lbs_ret_802_11d_domain_info(struct cmd_ds_command *resp)
	{
	struct cmd_ds_802_11d_domain_info *domaininfo =
	&resp->params.domaininforesp;
	struct mrvl_ie_domain_param_set *domain = &domaininfo->domain;
	u16 action = le16_to_cpu(domaininfo->action);
	s16 ret = 0;
	u8 nr_triplet = 0;

	lbs_deb_enter(LBS_DEB_11D);

	lbs_deb_hex(LBS_DEB_11D, "domain info resp", (u8 *) resp,
	(int)le16_to_cpu(resp->size));

	nr_triplet = (le16_to_cpu(domain->header.len) - COUNTRY_CODE_LEN) /
	sizeof(struct ieee80211_country_ie_triplet);

	lbs_deb_11d("domain info resp: nr_triplet %d\n", nr_triplet);

	if (nr_triplet > MRVDRV_MAX_TRIPLET_802_11D) {
	lbs_deb_11d("invalid number of triplets returned!!\n");
	return -1;
	}

	switch (action) {
	case CMD_ACT_SET: /Proc set action /
	break;

	case CMD_ACT_GET:
	break;
	default:
	lbs_deb_11d("invalid action:%d\n", domaininfo->action);
	ret = -1;
	break;
	}

	lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
	return ret;
	}

	static inline int handle_cmd_response(struct lbs_private *priv,
	struct cmd_header *cmd_response)
	{
	struct cmd_ds_command resp = (struct cmd_ds_command ) cmd_response;
	int ret = 0;
	unsigned long flags;
	uint16_t respcmd = le16_to_cpu(resp->command);

	lbs_deb_enter(LBS_DEB_HOST);

	switch (respcmd) {
	case CMD_RET(CMD_MAC_REG_ACCESS):
	case CMD_RET(CMD_BBP_REG_ACCESS):
	case CMD_RET(CMD_RF_REG_ACCESS):
	ret = lbs_ret_reg_access(priv, respcmd, resp);
	break;

	case CMD_RET(CMD_802_11_SET_AFC):
	case CMD_RET(CMD_802_11_GET_AFC):
	spin_lock_irqsave(&priv->driver_lock, flags);
	memmove((void *)priv->cur_cmd->callback_arg, &resp->params.afc,
	sizeof(struct cmd_ds_802_11_afc));
	spin_unlock_irqrestore(&priv->driver_lock, flags);

	break;

	case CMD_RET(CMD_802_11_BEACON_STOP):
	break;

	case CMD_RET(CMD_802_11_RSSI):
	ret = lbs_ret_802_11_rssi(priv, resp);
	break;

	case CMD_RET(CMD_802_11D_DOMAIN_INFO):
	ret = lbs_ret_802_11d_domain_info(resp);
	break;

	case CMD_RET(CMD_802_11_TPC_CFG):
	spin_lock_irqsave(&priv->driver_lock, flags);
	memmove((void *)priv->cur_cmd->callback_arg, &resp->params.tpccfg,
	sizeof(struct cmd_ds_802_11_tpc_cfg));
	spin_unlock_irqrestore(&priv->driver_lock, flags);
	break;

	case CMD_RET(CMD_BT_ACCESS):
	spin_lock_irqsave(&priv->driver_lock, flags);
	if (priv->cur_cmd->callback_arg)
	memcpy((void *)priv->cur_cmd->callback_arg,
	&resp->params.bt.addr1, 2 * ETH_ALEN);
	spin_unlock_irqrestore(&priv->driver_lock, flags);
	break;
	case CMD_RET(CMD_FWT_ACCESS):
	spin_lock_irqsave(&priv->driver_lock, flags);
	if (priv->cur_cmd->callback_arg)
	memcpy((void *)priv->cur_cmd->callback_arg, &resp->params.fwt,
	sizeof(resp->params.fwt));
	spin_unlock_irqrestore(&priv->driver_lock, flags);
	break;
	case CMD_RET(CMD_802_11_BEACON_CTRL):
	ret = lbs_ret_802_11_bcn_ctrl(priv, resp);
	break;

	default:
	lbs_pr_err("CMD_RESP: unknown cmd response 0x%04x\n",
	le16_to_cpu(resp->command));
	break;
	}
	lbs_deb_leave(LBS_DEB_HOST);
	return ret;
	}

	int lbs_process_command_response(struct lbs_private priv, u8 data, u32 len)
	{
	uint16_t respcmd, curcmd;
	struct cmd_header *resp;
	int ret = 0;
	unsigned long flags;
	uint16_t result;

	lbs_deb_enter(LBS_DEB_HOST);

	mutex_lock(&priv->lock);
	spin_lock_irqsave(&priv->driver_lock, flags);

	if (!priv->cur_cmd) {
	lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
	ret = -1;
	spin_unlock_irqrestore(&priv->driver_lock, flags);
	goto done;
	}

	resp = (void *)data;
	curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command);
	respcmd = le16_to_cpu(resp->command);
	result = le16_to_cpu(resp->result);

	lbs_deb_cmd("CMD_RESP: response 0x%04x, seq %d, size %d\n",
	respcmd, le16_to_cpu(resp->seqnum), len);
	lbs_deb_hex(LBS_DEB_CMD, "CMD_RESP", (void *) resp, len);

	if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) {
	lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
	le16_to_cpu(resp->seqnum), le16_to_cpu(priv->cur_cmd->cmdbuf->seqnum));
	spin_unlock_irqrestore(&priv->driver_lock, flags);
	ret = -1;
	goto done;
	}
	if (respcmd != CMD_RET(curcmd) &&
	respcmd != CMD_RET_802_11_ASSOCIATE && curcmd != CMD_802_11_ASSOCIATE) {
	lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd, curcmd);
	spin_unlock_irqrestore(&priv->driver_lock, flags);
	ret = -1;
	goto done;
	}

	if (resp->result == cpu_to_le16(0x0004)) {
	/* 0x0004 means -EAGAIN. Drop the response, let it time out
	and be resubmitted */
	lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
	le16_to_cpu(resp->command));
	spin_unlock_irqrestore(&priv->driver_lock, flags);
	ret = -1;
	goto done;
	}

	/* Now we got response from FW, cancel the command timer */
	del_timer(&priv->command_timer);
	priv->cmd_timed_out = 0;

	/* Store the response code to cur_cmd_retcode. */
	priv->cur_cmd_retcode = result;

	if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
	struct cmd_ds_802_11_ps_mode psmode = (void ) &resp[1];
	u16 action = le16_to_cpu(psmode->action);

	lbs_deb_host(
	"CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
	result, action);

	if (result) {
	lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
	result);
	/*
	* We should not re-try enter-ps command in
	* ad-hoc mode. It takes place in
	* lbs_execute_next_command().
	*/
	if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR &&
	action == CMD_SUBCMD_ENTER_PS)
	priv->psmode = LBS802_11POWERMODECAM;
	} else if (action == CMD_SUBCMD_ENTER_PS) {
	priv->needtowakeup = 0;
	priv->psstate = PS_STATE_AWAKE;

	lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
	if (priv->connect_status != LBS_CONNECTED) {
	/*
	* When Deauth Event received before Enter_PS command
	* response, We need to wake up the firmware.
	*/
	lbs_deb_host(
	"disconnected, invoking lbs_ps_wakeup\n");

	spin_unlock_irqrestore(&priv->driver_lock, flags);
	mutex_unlock(&priv->lock);
	lbs_ps_wakeup(priv, 0);
	mutex_lock(&priv->lock);
	spin_lock_irqsave(&priv->driver_lock, flags);
	}
	} else if (action == CMD_SUBCMD_EXIT_PS) {
	priv->needtowakeup = 0;
	priv->psstate = PS_STATE_FULL_POWER;
	lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
	} else {
	lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
	}

	lbs_complete_command(priv, priv->cur_cmd, result);
	spin_unlock_irqrestore(&priv->driver_lock, flags);

	ret = 0;
	goto done;
	}

	/* If the command is not successful, cleanup and return failure */
	if ((result != 0 \|\| !(respcmd & 0x8000))) {
	lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
	result, respcmd);
	/*
	* Handling errors here
	*/
	switch (respcmd) {
	case CMD_RET(CMD_GET_HW_SPEC):
	case CMD_RET(CMD_802_11_RESET):
	lbs_deb_host("CMD_RESP: reset failed\n");
	break;

	}
	lbs_complete_command(priv, priv->cur_cmd, result);
	spin_unlock_irqrestore(&priv->driver_lock, flags);

	ret = -1;
	goto done;
	}

	spin_unlock_irqrestore(&priv->driver_lock, flags);

	if (priv->cur_cmd && priv->cur_cmd->callback) {
	ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
	resp);
	} else
	ret = handle_cmd_response(priv, resp);

	spin_lock_irqsave(&priv->driver_lock, flags);

	if (priv->cur_cmd) {
	/* Clean up and Put current command back to cmdfreeq */
	lbs_complete_command(priv, priv->cur_cmd, result);
	}
	spin_unlock_irqrestore(&priv->driver_lock, flags);

	done:
	mutex_unlock(&priv->lock);
	lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
	return ret;
	}

	int lbs_process_event(struct lbs_private *priv, u32 event)
	{
	int ret = 0;
	struct cmd_header cmd;

	lbs_deb_enter(LBS_DEB_CMD);

	switch (event) {
	case MACREG_INT_CODE_LINK_SENSED:
	lbs_deb_cmd("EVENT: link sensed\n");
	break;

	case MACREG_INT_CODE_DEAUTHENTICATED:
	lbs_deb_cmd("EVENT: deauthenticated\n");
	lbs_mac_event_disconnected(priv);
	break;

	case MACREG_INT_CODE_DISASSOCIATED:
	lbs_deb_cmd("EVENT: disassociated\n");
	lbs_mac_event_disconnected(priv);
	break;

	case MACREG_INT_CODE_LINK_LOST_NO_SCAN:
	lbs_deb_cmd("EVENT: link lost\n");
	lbs_mac_event_disconnected(priv);
	break;

	case MACREG_INT_CODE_PS_SLEEP:
	lbs_deb_cmd("EVENT: ps sleep\n");

	/* handle unexpected PS SLEEP event */
	if (priv->psstate == PS_STATE_FULL_POWER) {
	lbs_deb_cmd(
	"EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
	break;
	}
	priv->psstate = PS_STATE_PRE_SLEEP;

	lbs_ps_confirm_sleep(priv);

	break;

	case MACREG_INT_CODE_HOST_AWAKE:
	lbs_deb_cmd("EVENT: host awake\n");
	if (priv->reset_deep_sleep_wakeup)
	priv->reset_deep_sleep_wakeup(priv);
	priv->is_deep_sleep = 0;
	lbs_cmd_async(priv, CMD_802_11_WAKEUP_CONFIRM, &cmd,
	sizeof(cmd));
	priv->is_host_sleep_activated = 0;
	wake_up_interruptible(&priv->host_sleep_q);
	break;

	case MACREG_INT_CODE_DEEP_SLEEP_AWAKE:
	if (priv->reset_deep_sleep_wakeup)
	priv->reset_deep_sleep_wakeup(priv);
	lbs_deb_cmd("EVENT: ds awake\n");
	priv->is_deep_sleep = 0;
	priv->wakeup_dev_required = 0;
	wake_up_interruptible(&priv->ds_awake_q);
	break;

	case MACREG_INT_CODE_PS_AWAKE:
	lbs_deb_cmd("EVENT: ps awake\n");
	/* handle unexpected PS AWAKE event */
	if (priv->psstate == PS_STATE_FULL_POWER) {
	lbs_deb_cmd(
	"EVENT: In FULL POWER mode - ignore PS AWAKE\n");
	break;
	}

	priv->psstate = PS_STATE_AWAKE;

	if (priv->needtowakeup) {
	/*
	* wait for the command processing to finish
	* before resuming sending
	* priv->needtowakeup will be set to FALSE
	* in lbs_ps_wakeup()
	*/
	lbs_deb_cmd("waking up ...\n");
	lbs_ps_wakeup(priv, 0);
	}
	break;

	case MACREG_INT_CODE_MIC_ERR_UNICAST:
	lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
	lbs_send_mic_failureevent(priv, event);
	break;

	case MACREG_INT_CODE_MIC_ERR_MULTICAST:
	lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
	lbs_send_mic_failureevent(priv, event);
	break;

	case MACREG_INT_CODE_MIB_CHANGED:
	lbs_deb_cmd("EVENT: MIB CHANGED\n");
	break;
	case MACREG_INT_CODE_INIT_DONE:
	lbs_deb_cmd("EVENT: INIT DONE\n");
	break;
	case MACREG_INT_CODE_ADHOC_BCN_LOST:
	lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
	break;
	case MACREG_INT_CODE_RSSI_LOW:
	lbs_pr_alert("EVENT: rssi low\n");
	break;
	case MACREG_INT_CODE_SNR_LOW:
	lbs_pr_alert("EVENT: snr low\n");
	break;
	case MACREG_INT_CODE_MAX_FAIL:
	lbs_pr_alert("EVENT: max fail\n");
	break;
	case MACREG_INT_CODE_RSSI_HIGH:
	lbs_pr_alert("EVENT: rssi high\n");
	break;
	case MACREG_INT_CODE_SNR_HIGH:
	lbs_pr_alert("EVENT: snr high\n");
	break;

	case MACREG_INT_CODE_MESH_AUTO_STARTED:
	/* Ignore spurious autostart events */
	lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
	break;

	default:
	lbs_pr_alert("EVENT: unknown event id %d\n", event);
	break;
	}

	lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
	return ret;
	}