#ifndef CCISS_H

#define CCISS_H

#include <linux/types.h>

#include <linux/ioctl.h>

#define CCISS_IOC_MAGIC 'B'

/*

 * transfer direction

 */

#define XFER_NONE		0x00

#define XFER_WRITE		0x01

#define XFER_READ		0x02

#define XFER_RSVD		0x03

/*

 * task attribute

 */

#define ATTR_UNTAGGED		0x00

#define ATTR_SIMPLE		0x04

#define ATTR_HEADOFQUEUE	0x05

#define ATTR_ORDERED		0x06

#define ATTR_ACA		0x07

/*

 * cdb type

 */

#define TYPE_CMD		0x00

#define TYPE_MSG		0x01

#define SENSEINFOBYTES		32

/*

 * Type defs used in the following structs

 */

#define BYTE __u8

#define WORD __u16

#define HWORD __u16

#define DWORD __u32

#pragma pack(1)

//Command List Structure

typedef union _SCSI3Addr_struct {

	struct {

		BYTE Dev;

		BYTE Bus:6;

		BYTE Mode:2;        // b00

	} PeripDev;

	struct {

		BYTE DevLSB;

		BYTE DevMSB:6;

		BYTE Mode:2;        // b01

	} LogDev;

	struct {

		BYTE Dev:5;

		BYTE Bus:3;

		BYTE Targ:6;

		BYTE Mode:2;        // b10

	} LogUnit;

} SCSI3Addr_struct;

typedef struct _PhysDevAddr_struct {

	DWORD             TargetId:24;

	DWORD             Bus:6;

	DWORD             Mode:2;

	SCSI3Addr_struct  Target[2]; //2 level target device addr

} PhysDevAddr_struct;

typedef struct _LogDevAddr_struct {

	DWORD            VolId:30;

	DWORD            Mode:2;

	BYTE             reserved[4];

} LogDevAddr_struct;

typedef union _LUNAddr_struct {

	BYTE               LunAddrBytes[8];

	SCSI3Addr_struct   SCSI3Lun[4];

	PhysDevAddr_struct PhysDev;

	LogDevAddr_struct  LogDev;

} LUNAddr_struct;

typedef struct _RequestBlock_struct {

	BYTE   CDBLen;

	struct {

		BYTE Type:3;

		BYTE Attribute:3;

		BYTE Direction:2;

	} Type;

	HWORD  Timeout;

	BYTE   CDB[16];

} RequestBlock_struct;

typedef union _MoreErrInfo_struct{

	struct {

		BYTE  Reserved[3];

		BYTE  Type;

		DWORD ErrorInfo;

	} Common_Info;

	struct{

		BYTE  Reserved[2];

		BYTE  offense_size;//size of offending entry

		BYTE  offense_num; //byte # of offense 0-base

		DWORD offense_value;

	} Invalid_Cmd;

} MoreErrInfo_struct;

typedef struct _ErrorInfo_struct {

	BYTE               ScsiStatus;

	BYTE               SenseLen;

	HWORD              CommandStatus;

	DWORD              ResidualCnt;

	MoreErrInfo_struct MoreErrInfo;

	BYTE               SenseInfo[SENSEINFOBYTES];

} ErrorInfo_struct;

#pragma pack()

typedef struct _IOCTL_Command_struct {

	LUNAddr_struct		LUN_info;

	RequestBlock_struct	Request;

	ErrorInfo_struct	error_info;

	WORD			buf_size;  /* size in bytes of the buf */

	BYTE			*buf;

} IOCTL_Command_struct;

typedef struct _LogvolInfo_struct{

	__u32   LunID;

	int     num_opens;  /* number of opens on the logical volume */

	int     num_parts;  /* number of partitions configured on logvol */

} LogvolInfo_struct;

#define CCISS_PASSTHRU     _IOWR(CCISS_IOC_MAGIC, 11, IOCTL_Command_struct)

#define CCISS_GETLUNINFO   _IOR(CCISS_IOC_MAGIC, 17, LogvolInfo_struct)

int cciss_init( struct checker *);

void cciss_free (struct checker * c);

int cciss_tur( struct checker *);

#endif