diff --git a/drivers/net/wireless/microchip/wilc1000/wilc_hif.h b/drivers/net/wireless/microchip/wilc1000/wilc_hif.h
new file mode 100644
index 0000000..be1d249
--- /dev/null
+++ b/drivers/net/wireless/microchip/wilc1000/wilc_hif.h
@@ -0,0 +1,235 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries
+ * All rights reserved.
+ */
+
+#ifndef HOST_INT_H
+#define HOST_INT_H
+#include <linux/ieee80211.h>
+#include "wilc_wlan_if.h"
+
+enum {
+	WILC_IDLE_MODE = 0x0,
+	WILC_AP_MODE = 0x1,
+	WILC_STATION_MODE = 0x2,
+	WILC_GO_MODE = 0x3,
+	WILC_CLIENT_MODE = 0x4
+};
+
+#define WILC_MAX_NUM_STA			9
+#define WILC_MAX_NUM_SCANNED_CH			14
+#define WILC_MAX_NUM_PROBED_SSID		10
+
+#define WILC_TX_MIC_KEY_LEN			8
+#define WILC_RX_MIC_KEY_LEN			8
+
+#define WILC_MAX_NUM_PMKIDS			16
+#define WILC_ADD_STA_LENGTH			40
+#define WILC_NUM_CONCURRENT_IFC			2
+
+enum {
+	WILC_SET_CFG = 0,
+	WILC_GET_CFG
+};
+
+#define WILC_MAX_ASSOC_RESP_FRAME_SIZE   256
+
+struct assoc_resp {
+	__le16 capab_info;
+	__le16 status_code;
+	__le16 aid;
+} __packed;
+
+struct rf_info {
+	u8 link_speed;
+	s8 rssi;
+	u32 tx_cnt;
+	u32 rx_cnt;
+	u32 tx_fail_cnt;
+};
+
+enum host_if_state {
+	HOST_IF_IDLE			= 0,
+	HOST_IF_SCANNING		= 1,
+	HOST_IF_CONNECTING		= 2,
+	HOST_IF_WAITING_CONN_RESP	= 3,
+	HOST_IF_CONNECTED		= 4,
+	HOST_IF_P2P_LISTEN		= 5,
+	HOST_IF_FORCE_32BIT		= 0xFFFFFFFF
+};
+
+struct wilc_pmkid {
+	u8 bssid[ETH_ALEN];
+	u8 pmkid[WLAN_PMKID_LEN];
+} __packed;
+
+struct wilc_pmkid_attr {
+	u8 numpmkid;
+	struct wilc_pmkid pmkidlist[WILC_MAX_NUM_PMKIDS];
+} __packed;
+
+struct cfg_param_attr {
+	u32 flag;
+	u16 short_retry_limit;
+	u16 long_retry_limit;
+	u16 frag_threshold;
+	u16 rts_threshold;
+};
+
+enum cfg_param {
+	WILC_CFG_PARAM_RETRY_SHORT = BIT(0),
+	WILC_CFG_PARAM_RETRY_LONG = BIT(1),
+	WILC_CFG_PARAM_FRAG_THRESHOLD = BIT(2),
+	WILC_CFG_PARAM_RTS_THRESHOLD = BIT(3)
+};
+
+enum scan_event {
+	SCAN_EVENT_NETWORK_FOUND	= 0,
+	SCAN_EVENT_DONE			= 1,
+	SCAN_EVENT_ABORTED		= 2,
+	SCAN_EVENT_FORCE_32BIT		= 0xFFFFFFFF
+};
+
+enum conn_event {
+	CONN_DISCONN_EVENT_CONN_RESP		= 0,
+	CONN_DISCONN_EVENT_DISCONN_NOTIF	= 1,
+	CONN_DISCONN_EVENT_FORCE_32BIT		= 0xFFFFFFFF
+};
+
+enum {
+	WILC_HIF_SDIO = 0,
+	WILC_HIF_SPI = BIT(0)
+};
+
+enum {
+	WILC_MAC_STATUS_INIT = -1,
+	WILC_MAC_STATUS_DISCONNECTED = 0,
+	WILC_MAC_STATUS_CONNECTED = 1
+};
+
+struct wilc_rcvd_net_info {
+	s8 rssi;
+	u8 ch;
+	u16 frame_len;
+	struct ieee80211_mgmt *mgmt;
+};
+
+struct wilc_user_scan_req {
+	void (*scan_result)(enum scan_event evt,
+			    struct wilc_rcvd_net_info *info, void *priv);
+	void *arg;
+	u32 ch_cnt;
+};
+
+struct wilc_conn_info {
+	u8 bssid[ETH_ALEN];
+	u8 security;
+	enum authtype auth_type;
+	u8 ch;
+	u8 *req_ies;
+	size_t req_ies_len;
+	u8 *resp_ies;
+	u16 resp_ies_len;
+	u16 status;
+	void (*conn_result)(enum conn_event evt, u8 status, void *priv_data);
+	void *arg;
+	void *param;
+};
+
+struct wilc_remain_ch {
+	u16 ch;
+	u32 duration;
+	void (*expired)(void *priv, u64 cookie);
+	void *arg;
+	u32 cookie;
+};
+
+struct wilc;
+struct host_if_drv {
+	struct wilc_user_scan_req usr_scan_req;
+	struct wilc_conn_info conn_info;
+	struct wilc_remain_ch remain_on_ch;
+	u64 p2p_timeout;
+
+	enum host_if_state hif_state;
+
+	u8 assoc_bssid[ETH_ALEN];
+
+	struct timer_list scan_timer;
+	struct wilc_vif *scan_timer_vif;
+
+	struct timer_list connect_timer;
+	struct wilc_vif *connect_timer_vif;
+
+	struct timer_list remain_on_ch_timer;
+	struct wilc_vif *remain_on_ch_timer_vif;
+
+	bool ifc_up;
+	u8 assoc_resp[WILC_MAX_ASSOC_RESP_FRAME_SIZE];
+};
+
+struct wilc_vif;
+int wilc_remove_wep_key(struct wilc_vif *vif, u8 index);
+int wilc_set_wep_default_keyid(struct wilc_vif *vif, u8 index);
+int wilc_add_wep_key_bss_sta(struct wilc_vif *vif, const u8 *key, u8 len,
+			     u8 index);
+int wilc_add_wep_key_bss_ap(struct wilc_vif *vif, const u8 *key, u8 len,
+			    u8 index, u8 mode, enum authtype auth_type);
+int wilc_add_ptk(struct wilc_vif *vif, const u8 *ptk, u8 ptk_key_len,
+		 const u8 *mac_addr, const u8 *rx_mic, const u8 *tx_mic,
+		 u8 mode, u8 cipher_mode, u8 index);
+s32 wilc_get_inactive_time(struct wilc_vif *vif, const u8 *mac,
+			   u32 *out_val);
+int wilc_add_rx_gtk(struct wilc_vif *vif, const u8 *rx_gtk, u8 gtk_key_len,
+		    u8 index, u32 key_rsc_len, const u8 *key_rsc,
+		    const u8 *rx_mic, const u8 *tx_mic, u8 mode,
+		    u8 cipher_mode);
+int wilc_set_pmkid_info(struct wilc_vif *vif, struct wilc_pmkid_attr *pmkid);
+int wilc_get_mac_address(struct wilc_vif *vif, u8 *mac_addr);
+int wilc_set_join_req(struct wilc_vif *vif, u8 *bssid, const u8 *ies,
+		      size_t ies_len);
+int wilc_disconnect(struct wilc_vif *vif);
+int wilc_set_mac_chnl_num(struct wilc_vif *vif, u8 channel);
+int wilc_get_rssi(struct wilc_vif *vif, s8 *rssi_level);
+int wilc_scan(struct wilc_vif *vif, u8 scan_source, u8 scan_type,
+	      u8 *ch_freq_list, u8 ch_list_len,
+	      void (*scan_result_fn)(enum scan_event,
+				     struct wilc_rcvd_net_info *, void *),
+	      void *user_arg, struct cfg80211_scan_request *request);
+int wilc_hif_set_cfg(struct wilc_vif *vif,
+		     struct cfg_param_attr *cfg_param);
+int wilc_init(struct net_device *dev, struct host_if_drv **hif_drv_handler);
+int wilc_deinit(struct wilc_vif *vif);
+int wilc_add_beacon(struct wilc_vif *vif, u32 interval, u32 dtim_period,
+		    struct cfg80211_beacon_data *params);
+int wilc_del_beacon(struct wilc_vif *vif);
+int wilc_add_station(struct wilc_vif *vif, const u8 *mac,
+		     struct station_parameters *params);
+int wilc_del_allstation(struct wilc_vif *vif, u8 mac_addr[][ETH_ALEN]);
+int wilc_del_station(struct wilc_vif *vif, const u8 *mac_addr);
+int wilc_edit_station(struct wilc_vif *vif, const u8 *mac,
+		      struct station_parameters *params);
+int wilc_set_power_mgmt(struct wilc_vif *vif, bool enabled, u32 timeout);
+int wilc_setup_multicast_filter(struct wilc_vif *vif, u32 enabled, u32 count,
+				u8 *mc_list);
+int wilc_remain_on_channel(struct wilc_vif *vif, u64 cookie,
+			   u32 duration, u16 chan,
+			   void (*expired)(void *, u64),
+			   void *user_arg);
+int wilc_listen_state_expired(struct wilc_vif *vif, u64 cookie);
+void wilc_frame_register(struct wilc_vif *vif, u16 frame_type, bool reg);
+int wilc_set_wfi_drv_handler(struct wilc_vif *vif, int index, u8 mode,
+			     u8 ifc_id);
+int wilc_set_operation_mode(struct wilc_vif *vif, u32 mode);
+int wilc_get_statistics(struct wilc_vif *vif, struct rf_info *stats);
+void wilc_resolve_disconnect_aberration(struct wilc_vif *vif);
+int wilc_get_vif_idx(struct wilc_vif *vif);
+int wilc_set_tx_power(struct wilc_vif *vif, u8 tx_power);
+int wilc_get_tx_power(struct wilc_vif *vif, u8 *tx_power);
+void wilc_scan_complete_received(struct wilc *wilc, u8 *buffer, u32 length);
+void wilc_network_info_received(struct wilc *wilc, u8 *buffer, u32 length);
+void wilc_gnrl_async_info_received(struct wilc *wilc, u8 *buffer, u32 length);
+void *wilc_parse_join_bss_param(struct cfg80211_bss *bss,
+				struct cfg80211_crypto_settings *crypto);
+#endif
