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diff --git a/sboot/magpie_1_1/inc/usbfifo_api.h b/sboot/magpie_1_1/inc/usbfifo_api.h
new file mode 100755
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+++ b/sboot/magpie_1_1/inc/usbfifo_api.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2013 Qualcomm Atheros, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted (subject to the limitations in the
+ * disclaimer below) provided that the following conditions are met:
+ *
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  * Neither the name of Qualcomm Atheros nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+ * GRANTED BY THIS LICENSE.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
+ * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/*
+ * @File: HIF_api.h
+ * 
+ * @Abstract: Host Interface api
+ * 
+ * @Notes:
+ */
+
+#ifndef _USB_FIFO_API_H
+#define _USB_FIFO_API_H
+
+#include "vbuf_api.h"
+
+typedef struct _USB_FIFO_CONFIG {
+        /* callback to get the buf for receiving commands from USB FIFO */
+    VBUF* (*get_command_buf)(void);
+        /* callback when receiving a command */
+    void (*recv_command)(VBUF *cmd);    
+        /* callback to get the buf for event to send to the host */
+    VBUF* (*get_event_buf)(void);
+        /* callback to indicate the event has been sent to the host */
+    void (*send_event_done)(VBUF *buf);
+    
+        /* context used for all callbacks */
+    //void *context;
+} USB_FIFO_CONFIG;
+
+/* hardware API table structure (API descriptions below) */
+struct usbfifo_api {
+    void (*_init)(USB_FIFO_CONFIG *pConfig);
+    void (*_enable_event_isr)(void);
+
+        /* room to expand this table by another table */
+    void *pReserved;    
+};
+
+extern void usbfifo_module_install(struct usbfifo_api *apis);
+
+#endif /* #ifndef _USB_FIFO_API_H */