drivers/net/wireless/ath/ath6kl/core.c - nest-cam/v366/kernel_backports - Git at Google

 /*
  * Copyright (c) 2004-2011 Atheros Communications Inc.
  * Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
  *
  * 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 "core.h"

 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/export.h>
 #include <linux/vmalloc.h>

 #include "debug.h"
 #include "hif-ops.h"
 #include "htc-ops.h"
 #include "cfg80211.h"
 #include "softmac.h"

 unsigned int debug_mask;
 static unsigned int suspend_mode;
 static unsigned int wow_mode;
 static unsigned int uart_debug;
 static unsigned int ath6kl_p2p;
 static unsigned int testmode;
 static unsigned int recovery_enable;
 static unsigned int heart_beat_poll;
 static unsigned int fw_roam_disabled;

 module_param(debug_mask, uint, 0644);
 module_param(suspend_mode, uint, 0644);
 module_param(wow_mode, uint, 0644);
 module_param(uart_debug, uint, 0644);
 module_param(ath6kl_p2p, uint, 0644);
 module_param(testmode, uint, 0644);
 module_param(recovery_enable, uint, 0644);
 module_param(heart_beat_poll, uint, 0644);
 module_param(fw_roam_disabled, uint, 0644);
 MODULE_PARM_DESC(recovery_enable, "Enable recovery from firmware error");
 MODULE_PARM_DESC(heart_beat_poll, "Enable fw error detection periodic"   \
 		 "polling. This also specifies the polling interval in"  \
 		 "msecs. Set reocvery_enable for this to be effective");

 void ath6kl_core_tx_complete(struct ath6kl *ar, struct sk_buff *skb)
 {
 	ath6kl_htc_tx_complete(ar, skb);
 }
 EXPORT_SYMBOL(ath6kl_core_tx_complete);

 void ath6kl_core_rx_complete(struct ath6kl *ar, struct sk_buff *skb, u8 pipe)
 {
 	ath6kl_htc_rx_complete(ar, skb, pipe);
 }
 EXPORT_SYMBOL(ath6kl_core_rx_complete);

 int ath6kl_core_init(struct ath6kl *ar, enum ath6kl_htc_type htc_type)
 {
 	struct ath6kl_bmi_target_info targ_info;
 	struct wireless_dev *wdev;
 	int ret = 0, i;

 	switch (htc_type) {
 	case ATH6KL_HTC_TYPE_MBOX:
 		ath6kl_htc_mbox_attach(ar);
 		break;
 	case ATH6KL_HTC_TYPE_PIPE:
 		ath6kl_htc_pipe_attach(ar);
 		break;
 	default:
 		WARN_ON(1);
 		return -ENOMEM;
 	}

 	ar->ath6kl_wq = create_singlethread_workqueue("ath6kl");
 	if (!ar->ath6kl_wq)
 		return -ENOMEM;

 	ret = ath6kl_bmi_init(ar);
 	if (ret)
 		goto err_wq;

 	/*
 	 * Turn on power to get hardware (target) version and leave power
 	 * on delibrately as we will boot the hardware anyway within few
 	 * seconds.
 	 */
 	ret = ath6kl_hif_power_on(ar);
 	if (ret)
 		goto err_bmi_cleanup;

 	ret = ath6kl_bmi_get_target_info(ar, &targ_info);
 	if (ret)
 		goto err_power_off;

 	ar->version.target_ver = le32_to_cpu(targ_info.version);
 	ar->target_type = le32_to_cpu(targ_info.type);
 	ar->wiphy->hw_version = le32_to_cpu(targ_info.version);

 	ret = ath6kl_init_hw_params(ar);
 	if (ret)
 		goto err_power_off;

 	ar->htc_target = ath6kl_htc_create(ar);

 	if (!ar->htc_target) {
 		ret = -ENOMEM;
 		goto err_power_off;
 	}

 	ar->testmode = testmode;

 	ret = ath6kl_init_fetch_firmwares(ar);
 	if (ret)
 		goto err_htc_cleanup;

 	ath6kl_mangle_mac_address(ar);

 	/* FIXME: we should free all firmwares in the error cases below */

 	/* Indicate that WMI is enabled (although not ready yet) */
 	set_bit(WMI_ENABLED, &ar->flag);
 	ar->wmi = ath6kl_wmi_init(ar);
 	if (!ar->wmi) {
 		ath6kl_err("failed to initialize wmi\n");
 		ret = -EIO;
 		goto err_htc_cleanup;
 	}

 	ath6kl_dbg(ATH6KL_DBG_TRC, "%s: got wmi @ 0x%p.\n", __func__, ar->wmi);

 	/* setup access class priority mappings */
 	ar->ac_stream_pri_map[WMM_AC_BK] = 0; /* lowest  */
 	ar->ac_stream_pri_map[WMM_AC_BE] = 1;
 	ar->ac_stream_pri_map[WMM_AC_VI] = 2;
 	ar->ac_stream_pri_map[WMM_AC_VO] = 3; /* highest */

 	/* allocate some buffers that handle larger AMSDU frames */
 	ath6kl_refill_amsdu_rxbufs(ar, ATH6KL_MAX_AMSDU_RX_BUFFERS);

 	ath6kl_cookie_init(ar);

 	ar->conf_flags = ATH6KL_CONF_IGNORE_ERP_BARKER |
 			 ATH6KL_CONF_ENABLE_11N | ATH6KL_CONF_ENABLE_TX_BURST;

 	if (suspend_mode &&
 	    suspend_mode >= WLAN_POWER_STATE_CUT_PWR &&
 	    suspend_mode <= WLAN_POWER_STATE_WOW)
 		ar->suspend_mode = suspend_mode;
 	else
 		ar->suspend_mode = 0;

 	if (suspend_mode == WLAN_POWER_STATE_WOW &&
 	    (wow_mode == WLAN_POWER_STATE_CUT_PWR ||
 	     wow_mode == WLAN_POWER_STATE_DEEP_SLEEP))
 		ar->wow_suspend_mode = wow_mode;
 	else
 		ar->wow_suspend_mode = 0;

 	if (uart_debug)
 		ar->conf_flags |= ATH6KL_CONF_UART_DEBUG;

 	set_bit(FIRST_BOOT, &ar->flag);

 	ath6kl_debug_init(ar);

 	ret = ath6kl_init_hw_start(ar);
 	if (ret) {
 		ath6kl_err("Failed to start hardware: %d\n", ret);
 		goto err_rxbuf_cleanup;
 	}

 	/* give our connected endpoints some buffers */
 	ath6kl_rx_refill(ar->htc_target, ar->ctrl_ep);
 	ath6kl_rx_refill(ar->htc_target, ar->ac2ep_map[WMM_AC_BE]);

 	ret = ath6kl_cfg80211_init(ar);
 	if (ret)
 		goto err_rxbuf_cleanup;

 	ret = ath6kl_debug_init_fs(ar);
 	if (ret) {
 		wiphy_unregister(ar->wiphy);
 		goto err_rxbuf_cleanup;
 	}

 	for (i = 0; i < ar->vif_max; i++)
 		ar->avail_idx_map |= BIT(i);

 	rtnl_lock();

 	/* Add an initial station interface */
 	wdev = ath6kl_interface_add(ar, "wlan%d", NL80211_IFTYPE_STATION, 0,
 				    INFRA_NETWORK);

 	rtnl_unlock();

 	if (!wdev) {
 		ath6kl_err("Failed to instantiate a network device\n");
 		ret = -ENOMEM;
 		wiphy_unregister(ar->wiphy);
 		goto err_rxbuf_cleanup;
 	}

 	ath6kl_dbg(ATH6KL_DBG_TRC, "%s: name=%s dev=0x%p, ar=0x%p\n",
 		   __func__, wdev->netdev->name, wdev->netdev, ar);

 	ar->fw_recovery.enable = !!recovery_enable;
 	if (!ar->fw_recovery.enable)
 		return ret;

 	if (heart_beat_poll &&
 	    test_bit(ATH6KL_FW_CAPABILITY_HEART_BEAT_POLL,
 		     ar->fw_capabilities))
 		ar->fw_recovery.hb_poll = heart_beat_poll;

 	ath6kl_recovery_init(ar);

 	return ret;

 err_rxbuf_cleanup:
 	ath6kl_debug_cleanup(ar);
 	ath6kl_htc_flush_rx_buf(ar->htc_target);
 	ath6kl_cleanup_amsdu_rxbufs(ar);
 	ath6kl_wmi_shutdown(ar->wmi);
 	clear_bit(WMI_ENABLED, &ar->flag);
 	ar->wmi = NULL;
 err_htc_cleanup:
 	ath6kl_htc_cleanup(ar->htc_target);
 err_power_off:
 	ath6kl_hif_power_off(ar);
 err_bmi_cleanup:
 	ath6kl_bmi_cleanup(ar);
 err_wq:
 	destroy_workqueue(ar->ath6kl_wq);

 	return ret;
 }
 EXPORT_SYMBOL(ath6kl_core_init);

 struct ath6kl *ath6kl_core_create(struct device *dev)
 {
 	struct ath6kl *ar;
 	u8 ctr;

 	ar = ath6kl_cfg80211_create();
 	if (!ar)
 		return NULL;

 	ar->p2p = !!ath6kl_p2p;
 	ar->fw_roam_disabled = !!fw_roam_disabled;
 	ar->dev = dev;

 	ar->vif_max = 1;

 	ar->max_norm_iface = 1;

 	spin_lock_init(&ar->lock);
 	spin_lock_init(&ar->mcastpsq_lock);
 	spin_lock_init(&ar->list_lock);

 	init_waitqueue_head(&ar->event_wq);
 	sema_init(&ar->sem, 1);

 	INIT_LIST_HEAD(&ar->amsdu_rx_buffer_queue);
 	INIT_LIST_HEAD(&ar->vif_list);

 	clear_bit(WMI_ENABLED, &ar->flag);
 	clear_bit(SKIP_SCAN, &ar->flag);
 	clear_bit(DESTROY_IN_PROGRESS, &ar->flag);

 	ar->tx_pwr = 0;
 	ar->intra_bss = 1;
 	ar->lrssi_roam_threshold = DEF_LRSSI_ROAM_THRESHOLD;

 	ar->state = ATH6KL_STATE_OFF;

 	memset((u8 *)ar->sta_list, 0,
 	       AP_MAX_NUM_STA * sizeof(struct ath6kl_sta));

 	/* Init the PS queues */
 	for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) {
 		spin_lock_init(&ar->sta_list[ctr].psq_lock);
 		skb_queue_head_init(&ar->sta_list[ctr].psq);
 		skb_queue_head_init(&ar->sta_list[ctr].apsdq);
 		ar->sta_list[ctr].mgmt_psq_len = 0;
 		INIT_LIST_HEAD(&ar->sta_list[ctr].mgmt_psq);
 		ar->sta_list[ctr].aggr_conn =
 			kzalloc(sizeof(struct aggr_info_conn), GFP_KERNEL);
 		if (!ar->sta_list[ctr].aggr_conn) {
 			ath6kl_err("Failed to allocate memory for sta aggregation information\n");
 			ath6kl_core_destroy(ar);
 			return NULL;
 		}
 	}

 	skb_queue_head_init(&ar->mcastpsq);

 	memcpy(ar->ap_country_code, DEF_AP_COUNTRY_CODE, 3);

 	return ar;
 }
 EXPORT_SYMBOL(ath6kl_core_create);

 void ath6kl_core_cleanup(struct ath6kl *ar)
 {
 	ath6kl_hif_power_off(ar);

 	ath6kl_recovery_cleanup(ar);

 	destroy_workqueue(ar->ath6kl_wq);

 	if (ar->htc_target)
 		ath6kl_htc_cleanup(ar->htc_target);

 	ath6kl_cookie_cleanup(ar);

 	ath6kl_cleanup_amsdu_rxbufs(ar);

 	ath6kl_bmi_cleanup(ar);

 	ath6kl_debug_cleanup(ar);

 	kfree(ar->fw_board);
 	kfree(ar->fw_otp);
 	vfree(ar->fw);
 	kfree(ar->fw_patch);
 	kfree(ar->fw_testscript);

 	ath6kl_cfg80211_cleanup(ar);
 }
 EXPORT_SYMBOL(ath6kl_core_cleanup);

 void ath6kl_core_destroy(struct ath6kl *ar)
 {
 	ath6kl_cfg80211_destroy(ar);
 }
 EXPORT_SYMBOL(ath6kl_core_destroy);

 MODULE_AUTHOR("Qualcomm Atheros");
 MODULE_DESCRIPTION("Core module for AR600x SDIO and USB devices.");
 MODULE_LICENSE("Dual BSD/GPL");
	/*
	* Copyright (c) 2004-2011 Atheros Communications Inc.
	* Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
	*
	* 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 "core.h"

	#include <linux/module.h>
	#include <linux/moduleparam.h>
	#include <linux/export.h>
	#include <linux/vmalloc.h>

	#include "debug.h"
	#include "hif-ops.h"
	#include "htc-ops.h"
	#include "cfg80211.h"
	#include "softmac.h"

	unsigned int debug_mask;
	static unsigned int suspend_mode;
	static unsigned int wow_mode;
	static unsigned int uart_debug;
	static unsigned int ath6kl_p2p;
	static unsigned int testmode;
	static unsigned int recovery_enable;
	static unsigned int heart_beat_poll;
	static unsigned int fw_roam_disabled;

	module_param(debug_mask, uint, 0644);
	module_param(suspend_mode, uint, 0644);
	module_param(wow_mode, uint, 0644);
	module_param(uart_debug, uint, 0644);
	module_param(ath6kl_p2p, uint, 0644);
	module_param(testmode, uint, 0644);
	module_param(recovery_enable, uint, 0644);
	module_param(heart_beat_poll, uint, 0644);
	module_param(fw_roam_disabled, uint, 0644);
	MODULE_PARM_DESC(recovery_enable, "Enable recovery from firmware error");
	MODULE_PARM_DESC(heart_beat_poll, "Enable fw error detection periodic" \
	"polling. This also specifies the polling interval in" \
	"msecs. Set reocvery_enable for this to be effective");

	void ath6kl_core_tx_complete(struct ath6kl ar, struct sk_buff skb)
	{
	ath6kl_htc_tx_complete(ar, skb);
	}
	EXPORT_SYMBOL(ath6kl_core_tx_complete);

	void ath6kl_core_rx_complete(struct ath6kl ar, struct sk_buff skb, u8 pipe)
	{
	ath6kl_htc_rx_complete(ar, skb, pipe);
	}
	EXPORT_SYMBOL(ath6kl_core_rx_complete);

	int ath6kl_core_init(struct ath6kl *ar, enum ath6kl_htc_type htc_type)
	{
	struct ath6kl_bmi_target_info targ_info;
	struct wireless_dev *wdev;
	int ret = 0, i;

	switch (htc_type) {
	case ATH6KL_HTC_TYPE_MBOX:
	ath6kl_htc_mbox_attach(ar);
	break;
	case ATH6KL_HTC_TYPE_PIPE:
	ath6kl_htc_pipe_attach(ar);
	break;
	default:
	WARN_ON(1);
	return -ENOMEM;
	}

	ar->ath6kl_wq = create_singlethread_workqueue("ath6kl");
	if (!ar->ath6kl_wq)
	return -ENOMEM;

	ret = ath6kl_bmi_init(ar);
	if (ret)
	goto err_wq;

	/*
	* Turn on power to get hardware (target) version and leave power
	* on delibrately as we will boot the hardware anyway within few
	* seconds.
	*/
	ret = ath6kl_hif_power_on(ar);
	if (ret)
	goto err_bmi_cleanup;

	ret = ath6kl_bmi_get_target_info(ar, &targ_info);
	if (ret)
	goto err_power_off;

	ar->version.target_ver = le32_to_cpu(targ_info.version);
	ar->target_type = le32_to_cpu(targ_info.type);
	ar->wiphy->hw_version = le32_to_cpu(targ_info.version);

	ret = ath6kl_init_hw_params(ar);
	if (ret)
	goto err_power_off;

	ar->htc_target = ath6kl_htc_create(ar);

	if (!ar->htc_target) {
	ret = -ENOMEM;
	goto err_power_off;
	}

	ar->testmode = testmode;

	ret = ath6kl_init_fetch_firmwares(ar);
	if (ret)
	goto err_htc_cleanup;

	ath6kl_mangle_mac_address(ar);

	/* FIXME: we should free all firmwares in the error cases below */

	/* Indicate that WMI is enabled (although not ready yet) */
	set_bit(WMI_ENABLED, &ar->flag);
	ar->wmi = ath6kl_wmi_init(ar);
	if (!ar->wmi) {
	ath6kl_err("failed to initialize wmi\n");
	ret = -EIO;
	goto err_htc_cleanup;
	}

	ath6kl_dbg(ATH6KL_DBG_TRC, "%s: got wmi @ 0x%p.\n", __func__, ar->wmi);

	/* setup access class priority mappings */
	ar->ac_stream_pri_map[WMM_AC_BK] = 0; /* lowest */
	ar->ac_stream_pri_map[WMM_AC_BE] = 1;
	ar->ac_stream_pri_map[WMM_AC_VI] = 2;
	ar->ac_stream_pri_map[WMM_AC_VO] = 3; /* highest */

	/* allocate some buffers that handle larger AMSDU frames */
	ath6kl_refill_amsdu_rxbufs(ar, ATH6KL_MAX_AMSDU_RX_BUFFERS);

	ath6kl_cookie_init(ar);

	ar->conf_flags = ATH6KL_CONF_IGNORE_ERP_BARKER \|
	ATH6KL_CONF_ENABLE_11N \| ATH6KL_CONF_ENABLE_TX_BURST;

	if (suspend_mode &&
	suspend_mode >= WLAN_POWER_STATE_CUT_PWR &&
	suspend_mode <= WLAN_POWER_STATE_WOW)
	ar->suspend_mode = suspend_mode;
	else
	ar->suspend_mode = 0;

	if (suspend_mode == WLAN_POWER_STATE_WOW &&
	(wow_mode == WLAN_POWER_STATE_CUT_PWR \|\|
	wow_mode == WLAN_POWER_STATE_DEEP_SLEEP))
	ar->wow_suspend_mode = wow_mode;
	else
	ar->wow_suspend_mode = 0;

	if (uart_debug)
	ar->conf_flags \|= ATH6KL_CONF_UART_DEBUG;

	set_bit(FIRST_BOOT, &ar->flag);

	ath6kl_debug_init(ar);

	ret = ath6kl_init_hw_start(ar);
	if (ret) {
	ath6kl_err("Failed to start hardware: %d\n", ret);
	goto err_rxbuf_cleanup;
	}

	/* give our connected endpoints some buffers */
	ath6kl_rx_refill(ar->htc_target, ar->ctrl_ep);
	ath6kl_rx_refill(ar->htc_target, ar->ac2ep_map[WMM_AC_BE]);

	ret = ath6kl_cfg80211_init(ar);
	if (ret)
	goto err_rxbuf_cleanup;

	ret = ath6kl_debug_init_fs(ar);
	if (ret) {
	wiphy_unregister(ar->wiphy);
	goto err_rxbuf_cleanup;
	}

	for (i = 0; i < ar->vif_max; i++)
	ar->avail_idx_map \|= BIT(i);

	rtnl_lock();

	/* Add an initial station interface */
	wdev = ath6kl_interface_add(ar, "wlan%d", NL80211_IFTYPE_STATION, 0,
	INFRA_NETWORK);

	rtnl_unlock();

	if (!wdev) {
	ath6kl_err("Failed to instantiate a network device\n");
	ret = -ENOMEM;
	wiphy_unregister(ar->wiphy);
	goto err_rxbuf_cleanup;
	}

	ath6kl_dbg(ATH6KL_DBG_TRC, "%s: name=%s dev=0x%p, ar=0x%p\n",
	__func__, wdev->netdev->name, wdev->netdev, ar);

	ar->fw_recovery.enable = !!recovery_enable;
	if (!ar->fw_recovery.enable)
	return ret;

	if (heart_beat_poll &&
	test_bit(ATH6KL_FW_CAPABILITY_HEART_BEAT_POLL,
	ar->fw_capabilities))
	ar->fw_recovery.hb_poll = heart_beat_poll;

	ath6kl_recovery_init(ar);

	return ret;

	err_rxbuf_cleanup:
	ath6kl_debug_cleanup(ar);
	ath6kl_htc_flush_rx_buf(ar->htc_target);
	ath6kl_cleanup_amsdu_rxbufs(ar);
	ath6kl_wmi_shutdown(ar->wmi);
	clear_bit(WMI_ENABLED, &ar->flag);
	ar->wmi = NULL;
	err_htc_cleanup:
	ath6kl_htc_cleanup(ar->htc_target);
	err_power_off:
	ath6kl_hif_power_off(ar);
	err_bmi_cleanup:
	ath6kl_bmi_cleanup(ar);
	err_wq:
	destroy_workqueue(ar->ath6kl_wq);

	return ret;
	}
	EXPORT_SYMBOL(ath6kl_core_init);

	struct ath6kl ath6kl_core_create(struct device dev)
	{
	struct ath6kl *ar;
	u8 ctr;

	ar = ath6kl_cfg80211_create();
	if (!ar)
	return NULL;

	ar->p2p = !!ath6kl_p2p;
	ar->fw_roam_disabled = !!fw_roam_disabled;
	ar->dev = dev;

	ar->vif_max = 1;

	ar->max_norm_iface = 1;

	spin_lock_init(&ar->lock);
	spin_lock_init(&ar->mcastpsq_lock);
	spin_lock_init(&ar->list_lock);

	init_waitqueue_head(&ar->event_wq);
	sema_init(&ar->sem, 1);

	INIT_LIST_HEAD(&ar->amsdu_rx_buffer_queue);
	INIT_LIST_HEAD(&ar->vif_list);

	clear_bit(WMI_ENABLED, &ar->flag);
	clear_bit(SKIP_SCAN, &ar->flag);
	clear_bit(DESTROY_IN_PROGRESS, &ar->flag);

	ar->tx_pwr = 0;
	ar->intra_bss = 1;
	ar->lrssi_roam_threshold = DEF_LRSSI_ROAM_THRESHOLD;

	ar->state = ATH6KL_STATE_OFF;

	memset((u8 *)ar->sta_list, 0,
	AP_MAX_NUM_STA * sizeof(struct ath6kl_sta));

	/* Init the PS queues */
	for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) {
	spin_lock_init(&ar->sta_list[ctr].psq_lock);
	skb_queue_head_init(&ar->sta_list[ctr].psq);
	skb_queue_head_init(&ar->sta_list[ctr].apsdq);
	ar->sta_list[ctr].mgmt_psq_len = 0;
	INIT_LIST_HEAD(&ar->sta_list[ctr].mgmt_psq);
	ar->sta_list[ctr].aggr_conn =
	kzalloc(sizeof(struct aggr_info_conn), GFP_KERNEL);
	if (!ar->sta_list[ctr].aggr_conn) {
	ath6kl_err("Failed to allocate memory for sta aggregation information\n");
	ath6kl_core_destroy(ar);
	return NULL;
	}
	}

	skb_queue_head_init(&ar->mcastpsq);

	memcpy(ar->ap_country_code, DEF_AP_COUNTRY_CODE, 3);

	return ar;
	}
	EXPORT_SYMBOL(ath6kl_core_create);

	void ath6kl_core_cleanup(struct ath6kl *ar)
	{
	ath6kl_hif_power_off(ar);

	ath6kl_recovery_cleanup(ar);

	destroy_workqueue(ar->ath6kl_wq);

	if (ar->htc_target)
	ath6kl_htc_cleanup(ar->htc_target);

	ath6kl_cookie_cleanup(ar);

	ath6kl_cleanup_amsdu_rxbufs(ar);

	ath6kl_bmi_cleanup(ar);

	ath6kl_debug_cleanup(ar);

	kfree(ar->fw_board);
	kfree(ar->fw_otp);
	vfree(ar->fw);
	kfree(ar->fw_patch);
	kfree(ar->fw_testscript);

	ath6kl_cfg80211_cleanup(ar);
	}
	EXPORT_SYMBOL(ath6kl_core_cleanup);

	void ath6kl_core_destroy(struct ath6kl *ar)
	{
	ath6kl_cfg80211_destroy(ar);
	}
	EXPORT_SYMBOL(ath6kl_core_destroy);

	MODULE_AUTHOR("Qualcomm Atheros");
	MODULE_DESCRIPTION("Core module for AR600x SDIO and USB devices.");
	MODULE_LICENSE("Dual BSD/GPL");