diff --git a/drivers/net/wireless/ath/ath6kl/init.c b/drivers/net/wireless/ath/ath6kl/init.c
new file mode 100644
index 0000000..6094e43
--- /dev/null
+++ b/drivers/net/wireless/ath/ath6kl/init.c
@@ -0,0 +1,1312 @@
+
+/*
+ * Copyright (c) 2011 Atheros Communications 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 <linux/mmc/sdio_func.h>
+#include "core.h"
+#include "cfg80211.h"
+#include "target.h"
+#include "debug.h"
+#include "hif-ops.h"
+
+unsigned int debug_mask;
+
+module_param(debug_mask, uint, 0644);
+
+/*
+ * Include definitions here that can be used to tune the WLAN module
+ * behavior. Different customers can tune the behavior as per their needs,
+ * here.
+ */
+
+/*
+ * This configuration item enable/disable keepalive support.
+ * Keepalive support: In the absence of any data traffic to AP, null
+ * frames will be sent to the AP at periodic interval, to keep the association
+ * active. This configuration item defines the periodic interval.
+ * Use value of zero to disable keepalive support
+ * Default: 60 seconds
+ */
+#define WLAN_CONFIG_KEEP_ALIVE_INTERVAL 60
+
+/*
+ * This configuration item sets the value of disconnect timeout
+ * Firmware delays sending the disconnec event to the host for this
+ * timeout after is gets disconnected from the current AP.
+ * If the firmware successly roams within the disconnect timeout
+ * it sends a new connect event
+ */
+#define WLAN_CONFIG_DISCONNECT_TIMEOUT 10
+
+#define CONFIG_AR600x_DEBUG_UART_TX_PIN 8
+
+enum addr_type {
+	DATASET_PATCH_ADDR,
+	APP_LOAD_ADDR,
+	APP_START_OVERRIDE_ADDR,
+};
+
+#define ATH6KL_DATA_OFFSET    64
+struct sk_buff *ath6kl_buf_alloc(int size)
+{
+	struct sk_buff *skb;
+	u16 reserved;
+
+	/* Add chacheline space at front and back of buffer */
+	reserved = (2 * L1_CACHE_BYTES) + ATH6KL_DATA_OFFSET +
+		   sizeof(struct htc_packet);
+	skb = dev_alloc_skb(size + reserved);
+
+	if (skb)
+		skb_reserve(skb, reserved - L1_CACHE_BYTES);
+	return skb;
+}
+
+void ath6kl_init_profile_info(struct ath6kl *ar)
+{
+	ar->ssid_len = 0;
+	memset(ar->ssid, 0, sizeof(ar->ssid));
+
+	ar->dot11_auth_mode = OPEN_AUTH;
+	ar->auth_mode = NONE_AUTH;
+	ar->prwise_crypto = NONE_CRYPT;
+	ar->prwise_crypto_len = 0;
+	ar->grp_crypto = NONE_CRYPT;
+	ar->grp_crpto_len = 0;
+	memset(ar->wep_key_list, 0, sizeof(ar->wep_key_list));
+	memset(ar->req_bssid, 0, sizeof(ar->req_bssid));
+	memset(ar->bssid, 0, sizeof(ar->bssid));
+	ar->bss_ch = 0;
+	ar->nw_type = ar->next_mode = INFRA_NETWORK;
+}
+
+static u8 ath6kl_get_fw_iftype(struct ath6kl *ar)
+{
+	switch (ar->nw_type) {
+	case INFRA_NETWORK:
+		return HI_OPTION_FW_MODE_BSS_STA;
+	case ADHOC_NETWORK:
+		return HI_OPTION_FW_MODE_IBSS;
+	case AP_NETWORK:
+		return HI_OPTION_FW_MODE_AP;
+	default:
+		ath6kl_err("Unsupported interface type :%d\n", ar->nw_type);
+		return 0xff;
+	}
+}
+
+static inline u32 ath6kl_get_hi_item_addr(struct ath6kl *ar,
+					  u32 item_offset)
+{
+	u32 addr = 0;
+
+	if (ar->target_type == TARGET_TYPE_AR6003)
+		addr = ATH6KL_HI_START_ADDR + item_offset;
+
+	return addr;
+}
+
+static int ath6kl_set_host_app_area(struct ath6kl *ar)
+{
+	u32 address, data;
+	struct host_app_area host_app_area;
+
+	/* Fetch the address of the host_app_area_s
+	 * instance in the host interest area */
+	address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_app_host_interest));
+	address = TARG_VTOP(address);
+
+	if (ath6kl_read_reg_diag(ar, &address, &data))
+		return -EIO;
+
+	address = TARG_VTOP(data);
+	host_app_area.wmi_protocol_ver = WMI_PROTOCOL_VERSION;
+	if (ath6kl_access_datadiag(ar, address,
+				(u8 *)&host_app_area,
+				sizeof(struct host_app_area), false))
+		return -EIO;
+
+	return 0;
+}
+
+static inline void set_ac2_ep_map(struct ath6kl *ar,
+				  u8 ac,
+				  enum htc_endpoint_id ep)
+{
+	ar->ac2ep_map[ac] = ep;
+	ar->ep2ac_map[ep] = ac;
+}
+
+/* connect to a service */
+static int ath6kl_connectservice(struct ath6kl *ar,
+				 struct htc_service_connect_req  *con_req,
+				 char *desc)
+{
+	int status;
+	struct htc_service_connect_resp response;
+
+	memset(&response, 0, sizeof(response));
+
+	status = htc_conn_service(ar->htc_target, con_req, &response);
+	if (status) {
+		ath6kl_err("%s: failed to connect to %s service status:%d\n",
+				__func__, desc, status);
+		return status;
+	}
+
+	switch (con_req->svc_id) {
+	case WMI_CONTROL_SVC:
+		if (test_bit(WMI_ENABLED, &ar->flag))
+			ath6kl_wmi_set_control_ep(ar->wmi, response.endpoint);
+		ar->ctrl_ep = response.endpoint;
+		break;
+	case WMI_DATA_BE_SVC:
+		set_ac2_ep_map(ar, WMM_AC_BE, response.endpoint);
+		break;
+	case WMI_DATA_BK_SVC:
+		set_ac2_ep_map(ar, WMM_AC_BK, response.endpoint);
+		break;
+	case WMI_DATA_VI_SVC:
+		set_ac2_ep_map(ar, WMM_AC_VI, response.endpoint);
+		break;
+	case WMI_DATA_VO_SVC:
+		set_ac2_ep_map(ar, WMM_AC_VO, response.endpoint);
+		break;
+	default:
+		ath6kl_err("%s: service id is not mapped %d\n",
+			__func__, con_req->svc_id);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int ath6kl_init_service_ep(struct ath6kl *ar)
+{
+	struct htc_service_connect_req connect;
+
+	memset(&connect, 0, sizeof(connect));
+
+	/* these fields are the same for all service endpoints */
+	connect.ep_cb.rx = ath6kl_rx;
+	connect.ep_cb.rx_refill = ath6kl_rx_refill;
+	connect.ep_cb.tx_full = ath6kl_tx_queue_full;
+
+	/*
+	 * Set the max queue depth so that our ath6kl_tx_queue_full handler
+	 * gets called.
+	*/
+	connect.max_txq_depth = MAX_DEFAULT_SEND_QUEUE_DEPTH;
+	connect.ep_cb.rx_refill_thresh = ATH6KL_MAX_RX_BUFFERS / 4;
+	if (!connect.ep_cb.rx_refill_thresh)
+		connect.ep_cb.rx_refill_thresh++;
+
+	/* connect to control service */
+	connect.svc_id = WMI_CONTROL_SVC;
+	if (ath6kl_connectservice(ar, &connect, "WMI CONTROL"))
+		return -EIO;
+
+	connect.flags |= HTC_FLGS_TX_BNDL_PAD_EN;
+
+	/*
+	 * Limit the HTC message size on the send path, although e can
+	 * receive A-MSDU frames of 4K, we will only send ethernet-sized
+	 * (802.3) frames on the send path.
+	 */
+	connect.max_rxmsg_sz = WMI_MAX_TX_DATA_FRAME_LENGTH;
+
+	/*
+	 * To reduce the amount of committed memory for larger A_MSDU
+	 * frames, use the recv-alloc threshold mechanism for larger
+	 * packets.
+	 */
+	connect.ep_cb.rx_alloc_thresh = ATH6KL_BUFFER_SIZE;
+	connect.ep_cb.rx_allocthresh = ath6kl_alloc_amsdu_rxbuf;
+
+	/*
+	 * For the remaining data services set the connection flag to
+	 * reduce dribbling, if configured to do so.
+	 */
+	connect.conn_flags |= HTC_CONN_FLGS_REDUCE_CRED_DRIB;
+	connect.conn_flags &= ~HTC_CONN_FLGS_THRESH_MASK;
+	connect.conn_flags |= HTC_CONN_FLGS_THRESH_LVL_HALF;
+
+	connect.svc_id = WMI_DATA_BE_SVC;
+
+	if (ath6kl_connectservice(ar, &connect, "WMI DATA BE"))
+		return -EIO;
+
+	/* connect to back-ground map this to WMI LOW_PRI */
+	connect.svc_id = WMI_DATA_BK_SVC;
+	if (ath6kl_connectservice(ar, &connect, "WMI DATA BK"))
+		return -EIO;
+
+	/* connect to Video service, map this to to HI PRI */
+	connect.svc_id = WMI_DATA_VI_SVC;
+	if (ath6kl_connectservice(ar, &connect, "WMI DATA VI"))
+		return -EIO;
+
+	/*
+	 * Connect to VO service, this is currently not mapped to a WMI
+	 * priority stream due to historical reasons. WMI originally
+	 * defined 3 priorities over 3 mailboxes We can change this when
+	 * WMI is reworked so that priorities are not dependent on
+	 * mailboxes.
+	 */
+	connect.svc_id = WMI_DATA_VO_SVC;
+	if (ath6kl_connectservice(ar, &connect, "WMI DATA VO"))
+		return -EIO;
+
+	return 0;
+}
+
+static void ath6kl_init_control_info(struct ath6kl *ar)
+{
+	u8 ctr;
+
+	clear_bit(WMI_ENABLED, &ar->flag);
+	ath6kl_init_profile_info(ar);
+	ar->def_txkey_index = 0;
+	memset(ar->wep_key_list, 0, sizeof(ar->wep_key_list));
+	ar->ch_hint = 0;
+	ar->listen_intvl_t = A_DEFAULT_LISTEN_INTERVAL;
+	ar->listen_intvl_b = 0;
+	ar->tx_pwr = 0;
+	clear_bit(SKIP_SCAN, &ar->flag);
+	set_bit(WMM_ENABLED, &ar->flag);
+	ar->intra_bss = 1;
+	memset(&ar->sc_params, 0, sizeof(ar->sc_params));
+	ar->sc_params.short_scan_ratio = WMI_SHORTSCANRATIO_DEFAULT;
+	ar->sc_params.scan_ctrl_flags = DEFAULT_SCAN_CTRL_FLAGS;
+
+	memset((u8 *)ar->sta_list, 0,
+	       AP_MAX_NUM_STA * sizeof(struct ath6kl_sta));
+
+	spin_lock_init(&ar->mcastpsq_lock);
+
+	/* 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->mcastpsq);
+
+	memcpy(ar->ap_country_code, DEF_AP_COUNTRY_CODE, 3);
+}
+
+/*
+ * Set HTC/Mbox operational parameters, this can only be called when the
+ * target is in the BMI phase.
+ */
+static int ath6kl_set_htc_params(struct ath6kl *ar, u32 mbox_isr_yield_val,
+				 u8 htc_ctrl_buf)
+{
+	int status;
+	u32 blk_size;
+
+	blk_size = ar->mbox_info.block_size;
+
+	if (htc_ctrl_buf)
+		blk_size |=  ((u32)htc_ctrl_buf) << 16;
+
+	/* set the host interest area for the block size */
+	status = ath6kl_bmi_write(ar,
+			ath6kl_get_hi_item_addr(ar,
+			HI_ITEM(hi_mbox_io_block_sz)),
+			(u8 *)&blk_size,
+			4);
+	if (status) {
+		ath6kl_err("%s: bmi_write_memory for IO block size failed\n",
+			   __func__);
+		goto out;
+	}
+
+	ath6kl_dbg(ATH6KL_DBG_TRC, "block size set: %d (target addr:0x%X)\n",
+		   blk_size,
+		   ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_mbox_io_block_sz)));
+
+	if (mbox_isr_yield_val) {
+		/* set the host interest area for the mbox ISR yield limit */
+		status = ath6kl_bmi_write(ar,
+				ath6kl_get_hi_item_addr(ar,
+				HI_ITEM(hi_mbox_isr_yield_limit)),
+				(u8 *)&mbox_isr_yield_val,
+				4);
+		if (status) {
+			ath6kl_err("%s: bmi_write_memory for yield "
+				   "limit failed\n",
+				__func__);
+			goto out;
+		}
+	}
+
+out:
+	return status;
+}
+
+#define REG_DUMP_COUNT_AR6003   60
+#define REGISTER_DUMP_LEN_MAX   60
+
+static void ath6kl_dump_target_assert_info(struct ath6kl *ar)
+{
+	u32 address;
+	u32 regdump_loc = 0;
+	int status;
+	u32 regdump_val[REGISTER_DUMP_LEN_MAX];
+	u32 i;
+
+	if (ar->target_type != TARGET_TYPE_AR6003)
+		return;
+
+	/* the reg dump pointer is copied to the host interest area */
+	address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_failure_state));
+	address = TARG_VTOP(address);
+
+	/* read RAM location through diagnostic window */
+	status = ath6kl_read_reg_diag(ar, &address, &regdump_loc);
+
+	if (status || !regdump_loc) {
+		ath6kl_err("%s: failed to get ptr to register dump area\n",
+			__func__);
+		return;
+	}
+
+	ath6kl_dbg(ATH6KL_DBG_TRC, "location of register dump data: 0x%X\n",
+		regdump_loc);
+
+	regdump_loc = TARG_VTOP(regdump_loc);
+
+	/* fetch register dump data */
+	status = ath6kl_access_datadiag(ar,
+					regdump_loc,
+					(u8 *)&regdump_val[0],
+					REG_DUMP_COUNT_AR6003 * (sizeof(u32)),
+					true);
+
+	if (status) {
+		ath6kl_err("failed to get register dump\n");
+		return;
+	}
+	ath6kl_dbg(ATH6KL_DBG_TRC, "Register Dump:\n");
+
+	for (i = 0; i < REG_DUMP_COUNT_AR6003; i++)
+		ath6kl_dbg(ATH6KL_DBG_TRC, " %d :  0x%8.8X\n",
+			   i, regdump_val[i]);
+
+}
+
+void ath6kl_target_failure(struct ath6kl *ar)
+{
+	ath6kl_err("%s: target asserted\n", __func__);
+
+	/* try dumping target assertion information (if any) */
+	ath6kl_dump_target_assert_info(ar);
+
+}
+
+static int ath6kl_target_config_wlan_params(struct ath6kl *ar)
+{
+	int status = 0;
+
+	/*
+	 * Configure the device for rx dot11 header rules. "0,0" are the
+	 * default values. Required if checksum offload is needed. Set
+	 * RxMetaVersion to 2.
+	 */
+	if (ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi,
+					       ar->rx_meta_ver, 0, 0)) {
+		ath6kl_err("%s: unable to set the rx frame format\n", __func__);
+		status = -EIO;
+	}
+
+	if (ar->conf_flags & ATH6KL_CONF_IGNORE_PS_FAIL_EVT_IN_SCAN)
+		if ((ath6kl_wmi_pmparams_cmd(ar->wmi, 0, 1, 0, 0, 1,
+		     IGNORE_POWER_SAVE_FAIL_EVENT_DURING_SCAN)) != 0) {
+			ath6kl_err("%s: unable to set power save fail event policy\n",
+				   __func__);
+			status = -EIO;
+		}
+
+	if (!(ar->conf_flags & ATH6KL_CONF_IGNORE_ERP_BARKER))
+		if ((ath6kl_wmi_set_lpreamble_cmd(ar->wmi, 0,
+		     WMI_DONOT_IGNORE_BARKER_IN_ERP)) != 0) {
+			ath6kl_err("%s: unable to set barker preamble policy\n",
+				   __func__);
+			status = -EIO;
+		}
+
+	if (ath6kl_wmi_set_keepalive_cmd(ar->wmi,
+			WLAN_CONFIG_KEEP_ALIVE_INTERVAL)) {
+		ath6kl_err("%s: unable to set keep alive interval\n",
+			   __func__);
+		status = -EIO;
+	}
+
+	if (ath6kl_wmi_disctimeout_cmd(ar->wmi,
+			WLAN_CONFIG_DISCONNECT_TIMEOUT)) {
+		ath6kl_err("%s: unable to set disconnect timeout\n",
+			   __func__);
+		status = -EIO;
+	}
+
+	if (!(ar->conf_flags & ATH6KL_CONF_ENABLE_TX_BURST))
+		if (ath6kl_wmi_set_wmm_txop(ar->wmi, WMI_TXOP_DISABLED)) {
+			ath6kl_err("%s: unable to set txop bursting\n",
+				   __func__);
+			status = -EIO;
+		}
+
+	return status;
+}
+
+int ath6kl_configure_target(struct ath6kl *ar)
+{
+	u32 param, ram_reserved_size;
+	u8 fw_iftype;
+
+	fw_iftype = ath6kl_get_fw_iftype(ar);
+	if (fw_iftype == 0xff)
+		return -EINVAL;
+
+	/* Tell target which HTC version it is used*/
+	param = HTC_PROTOCOL_VERSION;
+	if (ath6kl_bmi_write(ar,
+			     ath6kl_get_hi_item_addr(ar,
+			     HI_ITEM(hi_app_host_interest)),
+			     (u8 *)&param, 4) != 0) {
+		ath6kl_err("%s: bmi_write_memory for htc version failed\n",
+			__func__);
+		return -EIO;
+	}
+
+	/* set the firmware mode to STA/IBSS/AP */
+	param = 0;
+
+	if (ath6kl_bmi_read(ar,
+			    ath6kl_get_hi_item_addr(ar,
+			    HI_ITEM(hi_option_flag)),
+			    (u8 *)&param, 4) != 0) {
+		ath6kl_err("%s: bmi_read_memory for setting fwmode failed\n",
+			__func__);
+		return -EIO;
+	}
+
+	param |= (1 << HI_OPTION_NUM_DEV_SHIFT);
+	param |= (fw_iftype << HI_OPTION_FW_MODE_SHIFT);
+	param |= (0 << HI_OPTION_MAC_ADDR_METHOD_SHIFT);
+	param |= (0 << HI_OPTION_FW_BRIDGE_SHIFT);
+
+	if (ath6kl_bmi_write(ar,
+			     ath6kl_get_hi_item_addr(ar,
+			     HI_ITEM(hi_option_flag)),
+			     (u8 *)&param,
+			     4) != 0) {
+		ath6kl_err("%s: bmi_write_memory for setting fwmode failed\n",
+			__func__);
+		return -EIO;
+	}
+
+	ath6kl_dbg(ATH6KL_DBG_TRC, "firmware mode set\n");
+
+	/*
+	 * Hardcode the address use for the extended board data
+	 * Ideally this should be pre-allocate by the OS at boot time
+	 * But since it is a new feature and board data is loaded
+	 * at init time, we have to workaround this from host.
+	 * It is difficult to patch the firmware boot code,
+	 * but possible in theory.
+	 */
+
+	if (ar->target_type == TARGET_TYPE_AR6003) {
+		if (ar->version.target_ver == AR6003_REV2_VERSION) {
+			param = AR6003_REV2_BOARD_EXT_DATA_ADDRESS;
+			ram_reserved_size =  AR6003_REV2_RAM_RESERVE_SIZE;
+		} else {
+			param = AR6003_REV3_BOARD_EXT_DATA_ADDRESS;
+			ram_reserved_size =  AR6003_REV3_RAM_RESERVE_SIZE;
+		}
+
+		if (ath6kl_bmi_write(ar,
+				     ath6kl_get_hi_item_addr(ar,
+				     HI_ITEM(hi_board_ext_data)),
+				     (u8 *)&param, 4) != 0) {
+			ath6kl_err("%s: bmi_write_memory for hi_board_ext_data failed\n",
+				   __func__);
+			return -EIO;
+		}
+		if (ath6kl_bmi_write(ar,
+				     ath6kl_get_hi_item_addr(ar,
+				     HI_ITEM(hi_end_ram_reserve_sz)),
+				     (u8 *)&ram_reserved_size, 4) != 0) {
+			ath6kl_err("%s: bmi_write_memory for hi_end_ram_reserve_sz failed\n",
+				   __func__);
+			return -EIO;
+		}
+	}
+
+	/* set the block size for the target */
+	if (ath6kl_set_htc_params(ar, MBOX_YIELD_LIMIT, 0))
+		/* use default number of control buffers */
+		return -EIO;
+
+	return 0;
+}
+
+struct ath6kl *ath6kl_core_alloc(struct device *sdev)
+{
+	struct net_device *dev;
+	struct ath6kl *ar;
+	struct wireless_dev *wdev;
+
+	wdev = ath6kl_cfg80211_init(sdev);
+	if (!wdev) {
+		ath6kl_err("%s: ath6kl_cfg80211_init failed\n", __func__);
+		return NULL;
+	}
+
+	ar = wdev_priv(wdev);
+	ar->dev = sdev;
+	ar->wdev = wdev;
+	wdev->iftype = NL80211_IFTYPE_STATION;
+
+	dev = alloc_netdev(0, "wlan%d", ether_setup);
+	if (!dev) {
+		ath6kl_err("%s: no memory for network device instance\n",
+			__func__);
+		ath6kl_cfg80211_deinit(ar);
+		return NULL;
+	}
+
+	dev->ieee80211_ptr = wdev;
+	SET_NETDEV_DEV(dev, wiphy_dev(wdev->wiphy));
+	wdev->netdev = dev;
+	ar->sme_state = SME_DISCONNECTED;
+	ar->auto_auth_stage = AUTH_IDLE;
+
+	init_netdev(dev);
+
+	ar->net_dev = dev;
+	ar->wlan_state = WLAN_ENABLED;
+
+	ar->wlan_pwr_state = WLAN_POWER_STATE_ON;
+
+	spin_lock_init(&ar->lock);
+
+	ath6kl_init_control_info(ar);
+	init_waitqueue_head(&ar->event_wq);
+	sema_init(&ar->sem, 1);
+	clear_bit(DESTROY_IN_PROGRESS, &ar->flag);
+
+	INIT_LIST_HEAD(&ar->amsdu_rx_buffer_queue);
+
+	setup_timer(&ar->disconnect_timer, disconnect_timer_handler,
+		    (unsigned long) dev);
+
+	return ar;
+}
+
+int ath6kl_unavail_ev(struct ath6kl *ar)
+{
+	ath6kl_destroy(ar->net_dev, 1);
+
+	return 0;
+}
+
+/* firmware upload */
+static u32 ath6kl_get_load_address(u32 target_ver, enum addr_type type)
+{
+	WARN_ON(target_ver != AR6003_REV2_VERSION &&
+		target_ver != AR6003_REV3_VERSION);
+
+	switch (type) {
+	case DATASET_PATCH_ADDR:
+		return (target_ver == AR6003_REV2_VERSION) ?
+			AR6003_REV2_DATASET_PATCH_ADDRESS :
+			AR6003_REV3_DATASET_PATCH_ADDRESS;
+	case APP_LOAD_ADDR:
+		return (target_ver == AR6003_REV2_VERSION) ?
+			AR6003_REV2_APP_LOAD_ADDRESS :
+			0x1234;
+	case APP_START_OVERRIDE_ADDR:
+		return (target_ver == AR6003_REV2_VERSION) ?
+			AR6003_REV2_APP_START_OVERRIDE :
+			AR6003_REV3_APP_START_OVERRIDE;
+	default:
+		return 0;
+	}
+}
+
+static int ath6kl_get_fw(struct ath6kl *ar, const char *filename,
+			 u8 **fw, size_t *fw_len)
+{
+	const struct firmware *fw_entry;
+	int ret;
+
+	ret = request_firmware(&fw_entry, filename, ar->dev);
+	if (ret)
+		return ret;
+
+	*fw_len = fw_entry->size;
+	*fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
+
+	if (*fw == NULL)
+		ret = -ENOMEM;
+
+	release_firmware(fw_entry);
+
+	return ret;
+}
+
+static int ath6kl_fetch_board_file(struct ath6kl *ar)
+{
+	const char *filename;
+	int ret;
+
+	switch (ar->version.target_ver) {
+	case AR6003_REV2_VERSION:
+		filename = AR6003_REV2_BOARD_DATA_FILE;
+		break;
+	default:
+		filename = AR6003_REV3_BOARD_DATA_FILE;
+		break;
+	}
+
+	ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
+			    &ar->fw_board_len);
+	if (ret == 0) {
+		/* managed to get proper board file */
+		return 0;
+	}
+
+	/* there was no proper board file, try to use default instead */
+	ath6kl_warn("Failed to get board file %s (%d), trying to find default board file.\n",
+		    filename, ret);
+
+	switch (ar->version.target_ver) {
+	case AR6003_REV2_VERSION:
+		filename = AR6003_REV2_DEFAULT_BOARD_DATA_FILE;
+		break;
+	default:
+		filename = AR6003_REV3_DEFAULT_BOARD_DATA_FILE;
+		break;
+	}
+
+	ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
+			    &ar->fw_board_len);
+	if (ret) {
+		ath6kl_err("Failed to get default board file %s: %d\n",
+			   filename, ret);
+		return ret;
+	}
+
+	ath6kl_warn("WARNING! No proper board file was not found, instead using a default board file.\n");
+	ath6kl_warn("Most likely your hardware won't work as specified. Install correct board file!\n");
+
+	return 0;
+}
+
+
+static int ath6kl_upload_board_file(struct ath6kl *ar)
+{
+	u32 board_address, board_ext_address, param;
+	int ret;
+
+	if (ar->fw_board == NULL) {
+		ret = ath6kl_fetch_board_file(ar);
+		if (ret)
+			return ret;
+	}
+
+	/* Determine where in Target RAM to write Board Data */
+	ath6kl_bmi_read(ar,
+			ath6kl_get_hi_item_addr(ar,
+			HI_ITEM(hi_board_data)),
+			(u8 *) &board_address, 4);
+	ath6kl_dbg(ATH6KL_DBG_TRC, "board data download addr: 0x%x\n",
+		   board_address);
+
+	/* determine where in target ram to write extended board data */
+	ath6kl_bmi_read(ar,
+			ath6kl_get_hi_item_addr(ar,
+			HI_ITEM(hi_board_ext_data)),
+			(u8 *) &board_ext_address, 4);
+
+	ath6kl_dbg(ATH6KL_DBG_TRC, "board file download addr: 0x%x\n",
+		   board_ext_address);
+
+	if (board_ext_address == 0) {
+		ath6kl_err("Failed to get board file target address.\n");
+		return -EINVAL;
+	}
+
+	if (ar->fw_board_len == (AR6003_BOARD_DATA_SZ +
+				 AR6003_BOARD_EXT_DATA_SZ)) {
+		/* write extended board data */
+		ret = ath6kl_bmi_write(ar, board_ext_address,
+				       ar->fw_board + AR6003_BOARD_DATA_SZ,
+				       AR6003_BOARD_EXT_DATA_SZ);
+
+		if (ret) {
+			ath6kl_err("Failed to write extended board data: %d\n",
+				   ret);
+			return ret;
+		}
+
+		/* record that extended board data is initialized */
+		param = (AR6003_BOARD_EXT_DATA_SZ << 16) | 1;
+		ath6kl_bmi_write(ar,
+				 ath6kl_get_hi_item_addr(ar,
+				 HI_ITEM(hi_board_ext_data_config)),
+				 (unsigned char *) &param, 4);
+	}
+
+	if (ar->fw_board_len < AR6003_BOARD_DATA_SZ) {
+		ath6kl_err("Too small board file: %zu\n", ar->fw_board_len);
+		ret = -EINVAL;
+		return ret;
+	}
+
+	ret = ath6kl_bmi_write(ar, board_address, ar->fw_board,
+			       AR6003_BOARD_DATA_SZ);
+
+	if (ret) {
+		ath6kl_err("Board file bmi write failed: %d\n", ret);
+		return ret;
+	}
+
+	/* record the fact that Board Data IS initialized */
+	param = 1;
+	ath6kl_bmi_write(ar,
+			 ath6kl_get_hi_item_addr(ar,
+			 HI_ITEM(hi_board_data_initialized)),
+			 (u8 *)&param, 4);
+
+	return ret;
+}
+
+static int ath6kl_upload_otp(struct ath6kl *ar)
+{
+	const char *filename;
+	u32 address, param;
+	int ret;
+
+	switch (ar->version.target_ver) {
+	case AR6003_REV2_VERSION:
+		filename = AR6003_REV2_OTP_FILE;
+		break;
+	default:
+		filename = AR6003_REV3_OTP_FILE;
+		break;
+	}
+
+	if (ar->fw_otp == NULL) {
+		ret = ath6kl_get_fw(ar, filename, &ar->fw_otp,
+				    &ar->fw_otp_len);
+		if (ret) {
+			ath6kl_err("Failed to get OTP file %s: %d\n",
+				   filename, ret);
+			return ret;
+		}
+	}
+
+	address = ath6kl_get_load_address(ar->version.target_ver,
+					  APP_LOAD_ADDR);
+
+	ret = ath6kl_bmi_fast_download(ar, address, ar->fw_otp,
+				       ar->fw_otp_len);
+	if (ret) {
+		ath6kl_err("Failed to upload OTP file: %d\n", ret);
+		return ret;
+	}
+
+	/* execute the OTP code */
+	param = 0;
+	address = ath6kl_get_load_address(ar->version.target_ver,
+					  APP_START_OVERRIDE_ADDR);
+	ath6kl_bmi_execute(ar, address, &param);
+
+	return ret;
+}
+
+static int ath6kl_upload_firmware(struct ath6kl *ar)
+{
+	const char *filename;
+	u32 address;
+	int ret;
+
+	switch (ar->version.target_ver) {
+	case AR6003_REV2_VERSION:
+		filename = AR6003_REV2_FIRMWARE_FILE;
+		break;
+	default:
+		filename = AR6003_REV3_FIRMWARE_FILE;
+		break;
+	}
+
+	if (ar->fw == NULL) {
+		ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len);
+		if (ret) {
+			ath6kl_err("Failed to get firmware file %s: %d\n",
+				   filename, ret);
+			return ret;
+		}
+	}
+
+	address = ath6kl_get_load_address(ar->version.target_ver,
+					  APP_LOAD_ADDR);
+
+	ret = ath6kl_bmi_fast_download(ar, address, ar->fw, ar->fw_len);
+
+	if (ret) {
+		ath6kl_err("Failed to write firmware: %d\n", ret);
+		return ret;
+	}
+
+	/* Set starting address for firmware */
+	address = ath6kl_get_load_address(ar->version.target_ver,
+					  APP_START_OVERRIDE_ADDR);
+	ath6kl_bmi_set_app_start(ar, address);
+
+	return ret;
+}
+
+static int ath6kl_upload_patch(struct ath6kl *ar)
+{
+	const char *filename;
+	u32 address, param;
+	int ret;
+
+	switch (ar->version.target_ver) {
+	case AR6003_REV2_VERSION:
+		filename = AR6003_REV2_PATCH_FILE;
+		break;
+	default:
+		filename = AR6003_REV3_PATCH_FILE;
+		break;
+	}
+
+	if (ar->fw_patch == NULL) {
+		ret = ath6kl_get_fw(ar, filename, &ar->fw_patch,
+				    &ar->fw_patch_len);
+		if (ret) {
+			ath6kl_err("Failed to get patch file %s: %d\n",
+				   filename, ret);
+			return ret;
+		}
+	}
+
+	address = ath6kl_get_load_address(ar->version.target_ver,
+					  DATASET_PATCH_ADDR);
+
+	ret = ath6kl_bmi_write(ar, address, ar->fw_patch, ar->fw_patch_len);
+	if (ret) {
+		ath6kl_err("Failed to write patch file: %d\n", ret);
+		return ret;
+	}
+
+	param = address;
+	ath6kl_bmi_write(ar,
+			 ath6kl_get_hi_item_addr(ar,
+			 HI_ITEM(hi_dset_list_head)),
+			 (unsigned char *) &param, 4);
+
+	return 0;
+}
+
+static int ath6kl_init_upload(struct ath6kl *ar)
+{
+	u32 param, options, sleep, address;
+	int status = 0;
+
+	if (ar->target_type != TARGET_TYPE_AR6003)
+		return -EINVAL;
+
+	/* temporarily disable system sleep */
+	address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
+	status = ath6kl_bmi_reg_read(ar, address, &param);
+	if (status)
+		return status;
+
+	options = param;
+
+	param |= ATH6KL_OPTION_SLEEP_DISABLE;
+	status = ath6kl_bmi_reg_write(ar, address, param);
+	if (status)
+		return status;
+
+	address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
+	status = ath6kl_bmi_reg_read(ar, address, &param);
+	if (status)
+		return status;
+
+	sleep = param;
+
+	param |= SM(SYSTEM_SLEEP_DISABLE, 1);
+	status = ath6kl_bmi_reg_write(ar, address, param);
+	if (status)
+		return status;
+
+	ath6kl_dbg(ATH6KL_DBG_TRC, "old options: %d, old sleep: %d\n",
+		   options, sleep);
+
+	/* program analog PLL register */
+	status = ath6kl_bmi_reg_write(ar, ATH6KL_ANALOG_PLL_REGISTER,
+				      0xF9104001);
+	if (status)
+		return status;
+
+	/* Run at 80/88MHz by default */
+	param = SM(CPU_CLOCK_STANDARD, 1);
+
+	address = RTC_BASE_ADDRESS + CPU_CLOCK_ADDRESS;
+	status = ath6kl_bmi_reg_write(ar, address, param);
+	if (status)
+		return status;
+
+	param = 0;
+	address = RTC_BASE_ADDRESS + LPO_CAL_ADDRESS;
+	param = SM(LPO_CAL_ENABLE, 1);
+	status = ath6kl_bmi_reg_write(ar, address, param);
+	if (status)
+		return status;
+
+	/* WAR to avoid SDIO CRC err */
+	if (ar->version.target_ver == AR6003_REV2_VERSION) {
+		ath6kl_err("%s: temporary war to avoid sdio crc error\n",
+			   __func__);
+
+		param = 0x20;
+
+		address = GPIO_BASE_ADDRESS + GPIO_PIN10_ADDRESS;
+		status = ath6kl_bmi_reg_write(ar, address, param);
+		if (status)
+			return status;
+
+		address = GPIO_BASE_ADDRESS + GPIO_PIN11_ADDRESS;
+		status = ath6kl_bmi_reg_write(ar, address, param);
+		if (status)
+			return status;
+
+		address = GPIO_BASE_ADDRESS + GPIO_PIN12_ADDRESS;
+		status = ath6kl_bmi_reg_write(ar, address, param);
+		if (status)
+			return status;
+
+		address = GPIO_BASE_ADDRESS + GPIO_PIN13_ADDRESS;
+		status = ath6kl_bmi_reg_write(ar, address, param);
+		if (status)
+			return status;
+	}
+
+	/* write EEPROM data to Target RAM */
+	status = ath6kl_upload_board_file(ar);
+	if (status)
+		return status;
+
+	/* transfer One time Programmable data */
+	status = ath6kl_upload_otp(ar);
+	if (status)
+		return status;
+
+	/* Download Target firmware */
+	status = ath6kl_upload_firmware(ar);
+	if (status)
+		return status;
+
+	status = ath6kl_upload_patch(ar);
+	if (status)
+		return status;
+
+	/* Restore system sleep */
+	address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
+	status = ath6kl_bmi_reg_write(ar, address, sleep);
+	if (status)
+		return status;
+
+	address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
+	param = options | 0x20;
+	status = ath6kl_bmi_reg_write(ar, address, param);
+	if (status)
+		return status;
+
+	/* Configure GPIO AR6003 UART */
+	param = CONFIG_AR600x_DEBUG_UART_TX_PIN;
+	status = ath6kl_bmi_write(ar,
+				  ath6kl_get_hi_item_addr(ar,
+				  HI_ITEM(hi_dbg_uart_txpin)),
+				  (u8 *)&param, 4);
+
+	return status;
+}
+
+static int ath6kl_init(struct net_device *dev)
+{
+	struct ath6kl *ar = ath6kl_priv(dev);
+	int status = 0;
+	s32 timeleft;
+
+	if (!ar)
+		return -EIO;
+
+	/* Do we need to finish the BMI phase */
+	if (ath6kl_bmi_done(ar)) {
+		status = -EIO;
+		goto ath6kl_init_done;
+	}
+
+	/* Indicate that WMI is enabled (although not ready yet) */
+	set_bit(WMI_ENABLED, &ar->flag);
+	ar->wmi = ath6kl_wmi_init((void *) ar);
+	if (!ar->wmi) {
+		ath6kl_err("%s: failed to initialize wmi\n", __func__);
+		status = -EIO;
+		goto ath6kl_init_done;
+	}
+
+	ath6kl_dbg(ATH6KL_DBG_TRC, "%s: got wmi @ 0x%p.\n", __func__, ar->wmi);
+
+	/*
+	 * The reason we have to wait for the target here is that the
+	 * driver layer has to init BMI in order to set the host block
+	 * size.
+	 */
+	if (htc_wait_target(ar->htc_target)) {
+		status = -EIO;
+		goto err_wmi_cleanup;
+	}
+
+	if (ath6kl_init_service_ep(ar)) {
+		status = -EIO;
+		goto err_cleanup_scatter;
+	}
+
+	/* 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 */
+
+	/* 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]);
+
+	/* allocate some buffers that handle larger AMSDU frames */
+	ath6kl_refill_amsdu_rxbufs(ar, ATH6KL_MAX_AMSDU_RX_BUFFERS);
+
+	/* setup credit distribution */
+	ath6k_setup_credit_dist(ar->htc_target, &ar->credit_state_info);
+
+	ath6kl_cookie_init(ar);
+
+	/* start HTC */
+	status = htc_start(ar->htc_target);
+
+	if (status) {
+		ath6kl_cookie_cleanup(ar);
+		goto err_rxbuf_cleanup;
+	}
+
+	/* Wait for Wmi event to be ready */
+	timeleft = wait_event_interruptible_timeout(ar->event_wq,
+						    test_bit(WMI_READY,
+							     &ar->flag),
+						    WMI_TIMEOUT);
+
+	if (ar->version.abi_ver != ATH6KL_ABI_VERSION) {
+		ath6kl_err("%s: abi version mismatch: host(0x%x), target(0x%x)\n",
+			   __func__, ATH6KL_ABI_VERSION,
+			   ar->version.abi_ver);
+		status = -EIO;
+		goto err_htc_stop;
+	}
+
+	if (!timeleft || signal_pending(current)) {
+		ath6kl_err("%s: wmi is not ready or wait was interrupted\n",
+			   __func__);
+		status = -EIO;
+		goto err_htc_stop;
+	}
+
+	ath6kl_dbg(ATH6KL_DBG_TRC, "%s: wmi is ready\n", __func__);
+
+	/* communicate the wmi protocol verision to the target */
+	if ((ath6kl_set_host_app_area(ar)) != 0)
+		ath6kl_err("%s: unable to set the host app area\n", __func__);
+
+	ar->conf_flags = ATH6KL_CONF_IGNORE_ERP_BARKER |
+			 ATH6KL_CONF_ENABLE_11N | ATH6KL_CONF_ENABLE_TX_BURST;
+
+	status = ath6kl_target_config_wlan_params(ar);
+	if (!status)
+		goto ath6kl_init_done;
+
+err_htc_stop:
+	htc_stop(ar->htc_target);
+err_rxbuf_cleanup:
+	htc_flush_rx_buf(ar->htc_target);
+	ath6kl_cleanup_amsdu_rxbufs(ar);
+err_cleanup_scatter:
+	ath6kl_hif_cleanup_scatter(ar);
+err_wmi_cleanup:
+	ath6kl_wmi_shutdown(ar->wmi);
+	clear_bit(WMI_ENABLED, &ar->flag);
+	ar->wmi = NULL;
+
+ath6kl_init_done:
+	return status;
+}
+
+int ath6kl_core_init(struct ath6kl *ar)
+{
+	int ret = 0;
+	struct ath6kl_bmi_target_info targ_info;
+
+	ar->ath6kl_wq = create_singlethread_workqueue("ath6kl");
+	if (!ar->ath6kl_wq)
+		return -ENOMEM;
+
+	ret = ath6kl_bmi_init(ar);
+	if (ret)
+		goto err_wq;
+
+	ret = ath6kl_bmi_get_target_info(ar, &targ_info);
+	if (ret)
+		goto err_bmi_cleanup;
+
+	ar->version.target_ver = le32_to_cpu(targ_info.version);
+	ar->target_type = le32_to_cpu(targ_info.type);
+	ar->wdev->wiphy->hw_version = le32_to_cpu(targ_info.version);
+
+	ret = ath6kl_configure_target(ar);
+	if (ret)
+		goto err_bmi_cleanup;
+
+	ar->htc_target = htc_create(ar);
+
+	if (!ar->htc_target) {
+		ret = -ENOMEM;
+		goto err_bmi_cleanup;
+	}
+
+	ar->aggr_cntxt = aggr_init(ar->net_dev);
+	if (!ar->aggr_cntxt) {
+		ath6kl_err("%s: failed to initialize aggr.\n", __func__);
+		ret = -ENOMEM;
+		goto err_htc_cleanup;
+	}
+
+	ret = ath6kl_init_upload(ar);
+	if (ret)
+		goto err_htc_cleanup;
+
+	ret = ath6kl_init(ar->net_dev);
+	if (ret)
+		goto err_htc_cleanup;
+
+	/* This runs the init function if registered */
+	ret = register_netdev(ar->net_dev);
+	if (ret) {
+		ath6kl_err("%s: register_netdev failed\n", __func__);
+		ath6kl_destroy(ar->net_dev, 0);
+		return ret;
+	}
+
+	set_bit(NETDEV_REGISTERED, &ar->flag);
+
+	ath6kl_dbg(ATH6KL_DBG_TRC, "%s: name=%s dev=0x%p, ar=0x%p\n",
+			__func__, ar->net_dev->name, ar->net_dev, ar);
+
+	return ret;
+
+err_htc_cleanup:
+	htc_cleanup(ar->htc_target);
+err_bmi_cleanup:
+	ath6kl_bmi_cleanup(ar);
+err_wq:
+	destroy_workqueue(ar->ath6kl_wq);
+	return ret;
+}
+
+void ath6kl_stop_txrx(struct ath6kl *ar)
+{
+	struct net_device *ndev = ar->net_dev;
+
+	if (!ndev)
+		return;
+
+	set_bit(DESTROY_IN_PROGRESS, &ar->flag);
+
+	if (down_interruptible(&ar->sem)) {
+		ath6kl_err("%s: down_interruptible failed\n", __func__);
+		return;
+	}
+
+	if (ar->wlan_pwr_state != WLAN_POWER_STATE_CUT_PWR)
+		ath6kl_stop_endpoint(ndev, false, true);
+
+	ar->wlan_state = WLAN_DISABLED;
+}
+
+/*
+ * We need to differentiate between the surprise and planned removal of the
+ * device because of the following consideration:
+ *
+ * - In case of surprise removal, the hcd already frees up the pending
+ *   for the device and hence there is no need to unregister the function
+ *   driver inorder to get these requests. For planned removal, the function
+ *   driver has to explicitly unregister itself to have the hcd return all the
+ *   pending requests before the data structures for the devices are freed up.
+ *   Note that as per the current implementation, the function driver will
+ *   end up releasing all the devices since there is no API to selectively
+ *   release a particular device.
+ *
+ * - Certain commands issued to the target can be skipped for surprise
+ *   removal since they will anyway not go through.
+ */
+void ath6kl_destroy(struct net_device *dev, unsigned int unregister)
+{
+	struct ath6kl *ar;
+
+	if (!dev || !ath6kl_priv(dev)) {
+		ath6kl_err("%s: failed to get device structure\n", __func__);
+		return;
+	}
+
+	ar = ath6kl_priv(dev);
+
+	destroy_workqueue(ar->ath6kl_wq);
+
+	if (ar->htc_target)
+		htc_cleanup(ar->htc_target);
+
+	aggr_module_destroy(ar->aggr_cntxt);
+
+	ath6kl_cookie_cleanup(ar);
+
+	ath6kl_cleanup_amsdu_rxbufs(ar);
+
+	ath6kl_bmi_cleanup(ar);
+
+	if (unregister && test_bit(NETDEV_REGISTERED, &ar->flag)) {
+		unregister_netdev(dev);
+		clear_bit(NETDEV_REGISTERED, &ar->flag);
+	}
+
+	free_netdev(dev);
+
+	ath6kl_cfg80211_deinit(ar);
+}
