USB_Host_Shield_2.0/masstorage.h

#if !defined(__MASSTORAGE_H__)
#define __MASSTORAGE_H__

#include <inttypes.h>
#include <avr/pgmspace.h>
#include "avrpins.h"
#include "max3421e.h"
#include "usbhost.h"
#include "usb_ch9.h"
#include "Usb.h"

#if defined(ARDUINO) && ARDUINO >=100
#include "Arduino.h"
#else
#include <WProgram.h>
#endif

#include "printhex.h"
#include "hexdump.h"
#include "message.h"

#include "confdescparser.h"

#define SWAP(a, b) (((a) ^= (b)), ((b) ^= (a)), ((a) ^= (b)))

#define bmREQ_MASSOUT       USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE
#define bmREQ_MASSIN        USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE 

// Mass Storage Subclass Constants
#define MASS_SUBCLASS_SCSI_NOT_REPORTED		0x00	// De facto use	
#define MASS_SUBCLASS_RBC					0x01	
#define MASS_SUBCLASS_ATAPI					0x02	// MMC-5 (ATAPI)
#define MASS_SUBCLASS_OBSOLETE1				0x03	// Was QIC-157
#define MASS_SUBCLASS_UFI					0x04	// Specifies how to interface Floppy Disk Drives to USB
#define MASS_SUBCLASS_OBSOLETE2				0x05	// Was SFF-8070i
#define MASS_SUBCLASS_SCSI					0x06	// SCSI Transparent Command Set
#define MASS_SUBCLASS_LSDFS					0x07	// Specifies how host has to negotiate access before trying SCSI
#define MASS_SUBCLASS_IEEE1667				0x08	

// Mass Storage Class Protocols
#define MASS_PROTO_CBI						0x00	// CBI (with command completion interrupt)	
#define MASS_PROTO_CBI_NO_INT				0x01	// CBI (without command completion interrupt)	
#define MASS_PROTO_OBSOLETE					0x02	
#define MASS_PROTO_BBB						0x50	// Bulk Only Transport	
#define MASS_PROTO_UAS						0x62		

// Request Codes
#define MASS_REQ_ADSC						0x00		
#define MASS_REQ_GET						0xFC		
#define MASS_REQ_PUT						0xFD		
#define MASS_REQ_GET_MAX_LUN				0xFE		
#define MASS_REQ_BOMSR						0xFF	// Bulk-Only Mass Storage Reset		

#define MASS_CBW_SIGNATURE					0x43425355
#define MASS_CSW_SIGNATURE					0x53425355

#define MASS_CMD_DIR_OUT		            (0 << 7)
#define MASS_CMD_DIR_IN					    (1 << 7)

#define SCSI_CMD_INQUIRY					0x12
#define SCSI_CMD_REPORT_LUNS				0xA0
#define SCSI_CMD_REQUEST_SENSE				0x03
#define SCSI_CMD_FORMAT_UNIT				0x04
#define SCSI_CMD_READ_6						0x08
#define SCSI_CMD_READ_10					0x28
#define SCSI_CMD_READ_CAPACITY_10			0x25
#define SCSI_CMD_TEST_UNIT_READY			0x00
#define SCSI_CMD_WRITE_6					0x0A
#define SCSI_CMD_WRITE_10					0x2A
#define SCSI_CMD_MODE_SENSE_6				0x1A
#define SCSI_CMD_MODE_SENSE_10				0x5A

#define MASS_ERR_SUCCESS					0x00
#define MASS_ERR_PHASE_ERROR				0x01
#define MASS_ERR_DEVICE_DISCONNECTED		0x11
#define MASS_ERR_UNABLE_TO_RECOVER			0x12	// Reset recovery error
#define MASS_ERR_GENERAL_USB_ERROR			0xFF

#define MASS_TRANS_FLG_CALLBACK				0x01	// Callback is involved
#define MASS_TRANS_FLG_NO_STALL_CHECK		0x02	// STALL condition is not checked
#define MASS_TRANS_FLG_NO_PHASE_CHECK		0x04	// PHASE_ERROR is not checked


struct Capacity
{
	uint8_t		data[8];
	//uint32_t dwBlockAddress;
	//uint32_t dwBlockLength;
};

struct InquiryResponse
{
	uint8_t  DeviceType          : 5;
	uint8_t  PeripheralQualifier : 3;

	unsigned Reserved            : 7;
	unsigned Removable           : 1;

	uint8_t  Version;

	unsigned ResponseDataFormat  : 4;
	unsigned Reserved2           : 1;
	unsigned NormACA             : 1;
	unsigned TrmTsk              : 1;
	unsigned AERC                : 1;

	uint8_t  AdditionalLength;
	uint8_t  Reserved3[2];

	unsigned SoftReset           : 1;
	unsigned CmdQue              : 1;
	unsigned Reserved4           : 1;
	unsigned Linked              : 1;
	unsigned Sync                : 1;
	unsigned WideBus16Bit        : 1;
	unsigned WideBus32Bit        : 1;
	unsigned RelAddr             : 1;

	uint8_t  VendorID[8];
	uint8_t  ProductID[16];
	uint8_t  RevisionID[4];
};

struct CommandBlockWrapper
{
	uint32_t	dCBWSignature;
	uint32_t	dCBWTag;
	uint32_t	dCBWDataTransferLength;
	uint8_t		bmCBWFlags;

	struct
	{
		uint8_t	bmCBWLUN		: 4; 
		uint8_t	bmReserved1		: 4;
	};
	struct
	{
		uint8_t	bmCBWCBLength	: 4;
		uint8_t bmReserved2		: 4;
	};

	uint8_t		CBWCB[16];
} ;

struct CommandStatusWrapper
{
	uint32_t	dCSWSignature;
	uint32_t	dCSWTag;
	uint32_t	dCSWDataResidue;
	uint8_t		bCSWStatus;
};

struct RequestSenseResponce
{
	uint8_t		bResponseCode;
	uint8_t		bSegmentNumber;

	uint8_t		bmSenseKey            : 4;
	uint8_t		bmReserved            : 1;
	uint8_t		bmILI                 : 1;
	uint8_t		bmEOM                 : 1;
	uint8_t		bmFileMark            : 1;

	uint8_t		Information[4];
	uint8_t		bAdditionalLength;
	uint8_t		CmdSpecificInformation[4];
	uint8_t		bAdditionalSenseCode;
	uint8_t		bAdditionalSenseQualifier;
	uint8_t		bFieldReplaceableUnitCode;
	uint8_t		SenseKeySpecific[3];
};

//class BulkReadParser : public USBReadParser
//{
//protected:
//	bool IsValidCSW(uint8_t size, uint8_t *pcsw);
//	bool IsMeaningfulCSW(uint8_t size, uint8_t *pcsw);
//
//public:
//	virtual void Parse(const uint16_t len, const uint8_t *pbuf, const uint16_t &offset) = 0;
//};

#define MASS_MAX_ENDPOINTS		3

class BulkOnly : public USBDeviceConfig, public UsbConfigXtracter
{
protected:
	static const uint8_t	epDataInIndex;			// DataIn endpoint index
	static const uint8_t	epDataOutIndex;			// DataOUT endpoint index
	static const uint8_t	epInterruptInIndex;		// InterruptIN  endpoint index

	USB			*pUsb;
	uint8_t		bAddress;
	uint8_t		bConfNum;				// configuration number
	uint8_t		bIface;					// interface value
	uint8_t		bNumEP;					// total number of EP in the configuration
	uint32_t	qNextPollTime;			// next poll time
	bool		bPollEnable;			// poll enable flag

	EpInfo		epInfo[MASS_MAX_ENDPOINTS];

	uint32_t	dCBWTag;				// Tag
	uint32_t	dCBWDataTransferLength;	// Data Transfer Length
	uint8_t		bMaxLUN;				// Max LUN
	uint8_t		bLastUsbError;			// Last USB error

protected:
	//union TransFlags
	//{
	//	uint8_t			nValue;

	//	struct {
	//		uint8_t		bmCallback		: 1;
	//		uint8_t		bmCheckPhaseErr	: 1;
	//		uint8_t		bmDummy			: 6;
	//	};
	//};
	void PrintEndpointDescriptor(const USB_ENDPOINT_DESCRIPTOR* ep_ptr);

	bool IsValidCBW(uint8_t size, uint8_t *pcbw);
	bool IsMeaningfulCBW(uint8_t size, uint8_t *pcbw);

	uint8_t ClearEpHalt(uint8_t index);
	uint8_t Transaction(CommandBlockWrapper *cbw, uint16_t bsize, void *buf, uint8_t flags);
	uint8_t HandleUsbError(uint8_t index);

public:
	BulkOnly(USB *p);
	uint8_t GetLastUsbError() { return bLastUsbError; };

	uint8_t Reset();
	uint8_t GetMaxLUN(uint8_t *max_lun);

	uint8_t ResetRecovery();
	uint8_t Inquiry(uint8_t lun, uint16_t size, uint8_t *buf);
	uint8_t TestUnitReady(uint8_t lun);
	uint8_t ReadCapacity(uint8_t lun, uint16_t size, uint8_t *buf);
	uint8_t RequestSense(uint8_t lun, uint16_t size, uint8_t *buf);
	//uint8_t Read(uint8_t lun, uint32_t addr, uint16_t bsize, uint8_t *buf);
	uint8_t Read(uint8_t lun, uint32_t addr, uint16_t bsize, USBReadParser *prs);

	// USBDeviceConfig implementation
	virtual uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
	virtual uint8_t Release();
	virtual uint8_t Poll();
	virtual uint8_t GetAddress() { return bAddress; };

	// UsbConfigXtracter implementation
	virtual void EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *ep);
};

#endif // __MASSTORAGE_H__