/*
             LUFA Library
     Copyright (C) Dean Camera, 2010.
              
  dean [at] fourwalledcubicle [dot] com
      www.fourwalledcubicle.com
*/

/*
  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  Permission to use, copy, modify, distribute, and sell this 
  software and its documentation for any purpose is hereby granted
  without fee, provided that the above copyright notice appear in 
  all copies and that both that the copyright notice and this
  permission notice and warranty disclaimer appear in supporting 
  documentation, and that the name of the author not be used in 
  advertising or publicity pertaining to distribution of the 
  software without specific, written prior permission.

  The author disclaim 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, 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.
*/

/** \file
 *
 *  Header file for RNDIS.c.
 */

#ifndef _RNDIS_H_
#define _RNDIS_H_

	/* Includes: */
		#include <avr/io.h>
		#include <stdbool.h>
		
		#include "RNDISEthernet.h"
		#include "RNDISConstants.h"
		#include "Ethernet.h"

	/* Macros: */
		/** Implemented RNDIS Version Major */
		#define REMOTE_NDIS_VERSION_MAJOR             0x01

		/** Implemented RNDIS Version Minor */
		#define REMOTE_NDIS_VERSION_MINOR             0x00
	
		/** RNDIS request to issue a host-to-device NDIS command */
		#define REQ_SendEncapsulatedCommand           0x00

		/** RNDIS request to issue a device-to-host NDIS response */
		#define REQ_GetEncapsulatedResponse           0x01
		
	/* Enums: */
		/** Enum for the possible NDIS adapter states. */
		enum RNDIS_States_t
		{
			RNDIS_Uninitialized    = 0, /**< Adapter currently uninitialized */
			RNDIS_Initialized      = 1, /**< Adapter currently initialized but not ready for data transfers */
			RNDIS_Data_Initialized = 2, /**< Adapter currently initialized and ready for data transfers */
		};

		/** Enum for the NDIS hardware states */
		enum NDIS_Hardware_Status_t
		{
			NdisHardwareStatusReady, /**< Hardware Ready to accept commands from the host */
			NdisHardwareStatusInitializing, /**< Hardware busy initializing */
			NdisHardwareStatusReset, /**< Hardware reset */
			NdisHardwareStatusClosing, /**< Hardware currently closing */
			NdisHardwareStatusNotReady /**< Hardware not ready to accept commands from the host */
		};

	/* Type Defines: */
		/** Type define for a RNDIS message header, sent before RNDIS messages */
		typedef struct
		{
			uint32_t MessageType; /**< RNDIS message type, a REMOTE_NDIS_*_MSG constant */
			uint32_t MessageLength; /**< Total length of the RNDIS message, in bytes */
		} RNDIS_Message_Header_t;

		/** Type define for a RNDIS packet message, used to encapsulate Ethernet packets sent to and from the adapter */
		typedef struct
		{
			uint32_t MessageType;
			uint32_t MessageLength;
			uint32_t DataOffset;
			uint32_t DataLength;
			uint32_t OOBDataOffset;
			uint32_t OOBDataLength;
			uint32_t NumOOBDataElements;
			uint32_t PerPacketInfoOffset;
			uint32_t PerPacketInfoLength;
			uint32_t VcHandle;
			uint32_t Reserved;
		} RNDIS_Packet_Message_t;
	
		/** Type define for a RNDIS Initialize command message */
		typedef struct
		{
			uint32_t MessageType;
			uint32_t MessageLength;
			uint32_t RequestId;
			
			uint32_t MajorVersion;
			uint32_t MinorVersion;
			uint32_t MaxTransferSize;
		} RNDIS_Initialize_Message_t;
		
		/** Type define for a RNDIS Initialize complete response message */
		typedef struct
		{
			uint32_t MessageType;
			uint32_t MessageLength;
			uint32_t RequestId;
			uint32_t Status;
			
			uint32_t MajorVersion;
			uint32_t MinorVersion;
			uint32_t DeviceFlags;
			uint32_t Medium;
			uint32_t MaxPacketsPerTransfer;
			uint32_t MaxTransferSize;
			uint32_t PacketAlignmentFactor;
			uint32_t AFListOffset;
			uint32_t AFListSize;
		} RNDIS_Initialize_Complete_t;
		
		/** Type define for a RNDIS Keepalive command message */
		typedef struct
		{
			uint32_t MessageType;
			uint32_t MessageLength;
			uint32_t RequestId;
		} RNDIS_KeepAlive_Message_t;

		/** Type define for a RNDIS Keepalive complete message */
		typedef struct
		{
			uint32_t MessageType;
			uint32_t MessageLength;
			uint32_t RequestId;
			uint32_t Status;
		} RNDIS_KeepAlive_Complete_t;

		/** Type define for a RNDIS Reset complete message */
		typedef struct
		{
			uint32_t MessageType;
			uint32_t MessageLength;
			uint32_t Status;

			uint32_t AddressingReset;
		} RNDIS_Reset_Complete_t;
		
		/** Type define for a RNDIS Set command message */
		typedef struct
		{
			uint32_t MessageType;
			uint32_t MessageLength;
			uint32_t RequestId;
			
			uint32_t Oid;
			uint32_t InformationBufferLength;
			uint32_t InformationBufferOffset;
			uint32_t DeviceVcHandle;
		} RNDIS_Set_Message_t;

		/** Type define for a RNDIS Set complete response message */
		typedef struct
		{
			uint32_t MessageType;
			uint32_t MessageLength;
			uint32_t RequestId;
			uint32_t Status;
		} RNDIS_Set_Complete_t;
		
		/** Type define for a RNDIS Query command message */
		typedef struct
		{
			uint32_t MessageType;
			uint32_t MessageLength;
			uint32_t RequestId;
			
			uint32_t Oid;
			uint32_t InformationBufferLength;
			uint32_t InformationBufferOffset;
			uint32_t DeviceVcHandle;
		} RNDIS_Query_Message_t;
		
		/** Type define for a RNDIS Query complete response message */
		typedef struct
		{
			uint32_t MessageType;
			uint32_t MessageLength;
			uint32_t RequestId;
			uint32_t Status;
			
			uint32_t InformationBufferLength;
			uint32_t InformationBufferOffset;
		} RNDIS_Query_Complete_t;
		
	/* External Variables: */
		extern uint8_t                 RNDISMessageBuffer[];
		extern RNDIS_Message_Header_t* MessageHeader;
		extern bool                    ResponseReady;
		extern uint8_t                 CurrRNDISState;

	/* Function Prototypes: */
		void ProcessRNDISControlMessage(void);

		#if defined(INCLUDE_FROM_RNDIS_C)
			static bool ProcessNDISQuery(uint32_t OId, void* QueryData, uint16_t QuerySize,
										 void* ResponseData, uint16_t* ResponseSize);
			static bool ProcessNDISSet(uint32_t OId, void* SetData, uint16_t SetSize);	
		#endif
		
#endif
