path: root/Documentation/scsi/arcmsr_spec.txt

*******************************************************************************
**                            ARECA FIRMWARE SPEC
*******************************************************************************
**	Usage of IOP331 adapter
**	(All In/Out is in IOP331's view)
**	1. Message 0 --> InitThread message and return code
**	2. Doorbell is used for RS-232 emulation
**		inDoorBell :    bit0 -- data in ready
**			(DRIVER DATA WRITE OK)
**				bit1 -- data out has been read
**			(DRIVER DATA READ OK)
**		outDooeBell:    bit0 -- data out ready
**			(IOP331 DATA WRITE OK)
**				bit1 -- data in has been read
**			(IOP331 DATA READ OK)
**	3. Index Memory Usage
**	offset 0xf00 : for RS232 out (request buffer)
**	offset 0xe00 : for RS232 in  (scratch buffer)
**	offset 0xa00 : for inbound message code message_rwbuffer
**			(driver send to IOP331)
**	offset 0xa00 : for outbound message code message_rwbuffer
**			(IOP331 send to driver)
**	4. RS-232 emulation
**		Currently 128 byte buffer is used
**			1st uint32_t : Data length (1--124)
**			Byte 4--127  : Max 124 bytes of data
**	5. PostQ
**	All SCSI Command must be sent through postQ:
**	(inbound queue port)	Request frame must be 32 bytes aligned
**	#bit27--bit31 => flag for post ccb
**	#bit0--bit26  => real address (bit27--bit31) of post arcmsr_cdb
**		bit31 :
**			0 : 256 bytes frame
**			1 : 512 bytes frame
**		bit30 :
**			0 : normal request
**			1 : BIOS request
**		bit29 : reserved
**		bit28 : reserved
**		bit27 : reserved
**  ---------------------------------------------------------------------------
**	(outbount queue port)	Request reply
**	#bit27--bit31
**		=> flag for reply
**	#bit0--bit26
**		=> real address (bit27--bit31) of reply arcmsr_cdb
**			bit31 : must be 0 (for this type of reply)
**			bit30 : reserved for BIOS handshake
**			bit29 : reserved
**			bit28 :
**			0 : no error, ignore AdapStatus/DevStatus/SenseData
**			1 : Error, error code in AdapStatus/DevStatus/SenseData
**			bit27 : reserved
**	6. BIOS request
**		All BIOS request is the same with request from PostQ
**		Except :
**			Request frame is sent from configuration space
**		offset: 0x78 : Request Frame (bit30 == 1)
**		offset: 0x18 : writeonly to generate
**					IRQ to IOP331
**		Completion of request:
**			(bit30 == 0, bit28==err flag)
**	7. Definition of SGL entry (structure)
**	8. Message1 Out - Diag Status Code (????)
**	9. Message0 message code :
**		0x00 : NOP
**		0x01 : Get Config
**		->offset 0xa00 :for outbound message code message_rwbuffer
**		(IOP331 send to driver)
**		Signature             0x87974060(4)
**		Request len           0x00000200(4)
**		numbers of queue      0x00000100(4)
**		SDRAM Size            0x00000100(4)-->256 MB
**		IDE Channels          0x00000008(4)
**		vendor                40 bytes char
**		model                  8 bytes char
**		FirmVer               16 bytes char
**		Device Map            16 bytes char
**		FirmwareVersion DWORD <== Added for checking of
**						new firmware capability
**		0x02 : Set Config
**		->offset 0xa00 :for inbound message code message_rwbuffer
**		(driver send to IOP331)
**		Signature             0x87974063(4)
**		UPPER32 of Request Frame  (4)-->Driver Only
**		0x03 : Reset (Abort all queued Command)
**		0x04 : Stop Background Activity
**		0x05 : Flush Cache
**		0x06 : Start Background Activity
**			(re-start if background is halted)
**		0x07 : Check If Host Command Pending
**			(Novell May Need This Function)
**		0x08 : Set controller time
**		->offset 0xa00 : for inbound message code message_rwbuffer
**		(driver to IOP331)
**		byte 0 : 0xaa <-- signature
**		byte 1 : 0x55 <-- signature
**		byte 2 : year (04)
**		byte 3 : month (1..12)
**		byte 4 : date (1..31)
**		byte 5 : hour (0..23)
**		byte 6 : minute (0..59)
**		byte 7 : second (0..59)
*******************************************************************************
*******************************************************************************
**      	RS-232 Interface for Areca Raid Controller
**      The low level command interface is exclusive with VT100 terminal
**  --------------------------------------------------------------------
**      1. Sequence of command execution
**  --------------------------------------------------------------------
**    	(A) Header : 3 bytes sequence (0x5E, 0x01, 0x61)
**    	(B) Command block : variable length of data including length,
**    		command code, data and checksum byte
**    	(C) Return data : variable length of data
**  --------------------------------------------------------------------
**    2. Command block
**  --------------------------------------------------------------------
**    	(A) 1st byte : command block length (low byte)
**    	(B) 2nd byte : command block length (high byte)
**                note ..command block length shouldn't > 2040 bytes,
**    		length excludes these two bytes
**    	(C) 3rd byte : command code
**    	(D) 4th and following bytes : variable length data bytes
**    		depends on command code
**    	(E) last byte : checksum byte (sum of 1st byte until last data byte)
**  --------------------------------------------------------------------
**    3. Command code and associated data
**  --------------------------------------------------------------------
**    	The following are command code defined in raid controller Command
**    	code 0x10--0x1? are used for system level management,
**    	no password checking is needed and should be implemented in separate
**    	well controlled utility and not for end user access.
**    	Command code 0x20--0x?? always check the password,
**    	password must be entered to enable these command.
**    	enum
**    	{
**    		GUI_SET_SERIAL=0x10,
**    		GUI_SET_VENDOR,
**    		GUI_SET_MODEL,
**    		GUI_IDENTIFY,
**    		GUI_CHECK_PASSWORD,
**    		GUI_LOGOUT,
**    		GUI_HTTP,
**    		GUI_SET_ETHERNET_ADDR,
**    		GUI_SET_LOGO,
**    		GUI_POLL_EVENT,
**    		GUI_GET_EVENT,
**    		GUI_GET_HW_MONITOR,
**    		//    GUI_QUICK_CREATE=0x20, (function removed)
**    		GUI_GET_INFO_R=0x20,
**    		GUI_GET_INFO_V,
**    		GUI_GET_INFO_P,
**    		GUI_GET_INFO_S,
**    		GUI_CLEAR_EVENT,
**    		GUI_MUTE_BEEPER=0x30,
**    		GUI_BEEPER_SETTING,
**    		GUI_SET_PASSWORD,
**    		GUI_HOST_INTERFACE_MODE,
**    		GUI_REBUILD_PRIORITY,
**    		GUI_MAX_ATA_MODE,
**    		GUI_RESET_CONTROLLER,
**    		GUI_COM_PORT_SETTING,
**    		GUI_NO_OPERATION,
**    		GUI_DHCP_IP,
**    		GUI_CREATE_PASS_THROUGH=0x40,
**    		GUI_MODIFY_PASS_THROUGH,
**    		GUI_DELETE_PASS_THROUGH,
**    		GUI_IDENTIFY_DEVICE,
**    		GUI_CREATE_RAIDSET=0x50,
**    		GUI_DELETE_RAIDSET,
**    		GUI_EXPAND_RAIDSET,
**    		GUI_ACTIVATE_RAIDSET,
**    		GUI_CREATE_HOT_SPARE,
**    		GUI_DELETE_HOT_SPARE,
**    		GUI_CREATE_VOLUME=0x60,
**    		GUI_MODIFY_VOLUME,
**    		GUI_DELETE_VOLUME,
**    		GUI_START_CHECK_VOLUME,
**    		GUI_STOP_CHECK_VOLUME
**    	};
**    Command description :
**    	GUI_SET_SERIAL : Set the controller serial#
**    		byte 0,1        : length
**    		byte 2          : command code 0x10
**    		byte 3          : password length (should be 0x0f)
**    		byte 4-0x13     : should be "ArEcATecHnoLogY"
**    		byte 0x14--0x23 : Serial number string (must be 16 bytes)
**      GUI_SET_VENDOR : Set vendor string for the controller
**    		byte 0,1        : length
**    		byte 2          : command code 0x11
**    		byte 3          : password length (should be 0x08)
**    		byte 4-0x13     : should be "ArEcAvAr"
**    		byte 0x14--0x3B : vendor string (must be 40 bytes)
**      GUI_SET_MODEL : Set the model name of the controller
**    		byte 0,1        : length
**    		byte 2          : command code 0x12
**    		byte 3          : password length (should be 0x08)
**    		byte 4-0x13     : should be "ArEcAvAr"
**    		byte 0x14--0x1B : model string (must be 8 bytes)
**      GUI_IDENTIFY : Identify device
**    		byte 0,1        : length
**    		byte 2          : command code 0x13
**    		                  return "Areca RAID Subsystem "
**      GUI_CHECK_PASSWORD : Verify password
**    		byte 0,1        : length
**    		byte 2          : command code 0x14
**    		byte 3          : password length
**    		byte 4-0x??     : user password to be checked
**      GUI_LOGOUT : Logout GUI (force password checking on next command)
**    		byte 0,1        : length
**    		byte 2          : command code 0x15
**      GUI_HTTP : HTTP interface (reserved for Http proxy service)(0x16)
**
**      GUI_SET_ETHERNET_ADDR : Set the ethernet MAC address
**    		byte 0,1        : length
**    		byte 2          : command code 0x17
**    		byte 3          : password length (should be 0x08)
**    		byte 4-0x13     : should be "ArEcAvAr"
**    		byte 0x14--0x19 : Ethernet MAC address (must be 6 bytes)
**      GUI_SET_LOGO : Set logo in HTTP
**    		byte 0,1        : length
**    		byte 2          : command code 0x18
**    		byte 3          : Page# (0/1/2/3) (0xff --> clear OEM logo)
**    		byte 4/5/6/7    : 0x55/0xaa/0xa5/0x5a
**    		byte 8          : TITLE.JPG data (each page must be 2000 bytes)
**    		                  note page0 1st 2 byte must be
**    					actual length of the JPG file
**      GUI_POLL_EVENT : Poll If Event Log Changed
**    		byte 0,1        : length
**    		byte 2          : command code 0x19
**      GUI_GET_EVENT : Read Event
**    		byte 0,1        : length
**    		byte 2          : command code 0x1a
**    		byte 3          : Event Page (0:1st page/1/2/3:last page)
**      GUI_GET_HW_MONITOR : Get HW monitor data
**    		byte 0,1        : length
**    		byte 2 			: command code 0x1b
**    		byte 3 			: # of FANs(example 2)
**    		byte 4 			: # of Voltage sensor(example 3)
**    		byte 5 			: # of temperature sensor(example 2)
**    		byte 6 			: # of power
**    		byte 7/8        : Fan#0 (RPM)
**    		byte 9/10       : Fan#1
**    		byte 11/12 		: Voltage#0 original value in *1000
**    		byte 13/14 		: Voltage#0 value
**    		byte 15/16 		: Voltage#1 org
**    		byte 17/18 		: Voltage#1
**    		byte 19/20 		: Voltage#2 org
**    		byte 21/22 		: Voltage#2
**    		byte 23 		: Temp#0
**    		byte 24 		: Temp#1
**    		byte 25 		: Power indicator (bit0 : power#0,
**    						 bit1 : power#1)
**    		byte 26 		: UPS indicator
**      GUI_QUICK_CREATE : Quick create raid/volume set
**    	    byte 0,1        : length
**    	    byte 2          : command code 0x20
**    	    byte 3/4/5/6    : raw capacity
**    	    byte 7 			: raid level
**    	    byte 8 			: stripe size
**    	    byte 9 			: spare
**    	    byte 10/11/12/13: device mask (the devices to create raid/volume)
**    		This function is removed, application like
**    		to implement quick create function
**    	need to use GUI_CREATE_RAIDSET and GUI_CREATE_VOLUMESET function.
**      GUI_GET_INFO_R : Get Raid Set Information
**    		byte 0,1        : length
**    		byte 2          : command code 0x20
**    		byte 3          : raidset#
**    	typedef struct sGUI_RAIDSET
**    	{
**    		BYTE grsRaidSetName[16];
**    		DWORD grsCapacity;
**    		DWORD grsCapacityX;
**    		DWORD grsFailMask;
**    		BYTE grsDevArray[32];
**    		BYTE grsMemberDevices;
**    		BYTE grsNewMemberDevices;
**    		BYTE grsRaidState;
**    		BYTE grsVolumes;
**    		BYTE grsVolumeList[16];
**    		BYTE grsRes1;
**    		BYTE grsRes2;
**    		BYTE grsRes3;
**    		BYTE grsFreeSegments;
**    		DWORD grsRawStripes[8];
**    		DWORD grsRes4;
**    		DWORD grsRes5; //     Total to 128 bytes
**    		DWORD grsRes6; //     Total to 128 bytes
**    	} sGUI_RAIDSET, *pGUI_RAIDSET;
**      GUI_GET_INFO_V : Get Volume Set Information
**    		byte 0,1        : length
**    		byte 2          : command code 0x21
**    		byte 3          : volumeset#
**    	typedef struct sGUI_VOLUMESET
**    	{
**    		BYTE gvsVolumeName[16]; //     16
**    		DWORD gvsCapacity;
**    		DWORD gvsCapacityX;
**    		DWORD gvsFailMask;
**    		DWORD gvsStripeSize;
**    		DWORD gvsNewFailMask;
**    		DWORD gvsNewStripeSize;
**    		DWORD gvsVolumeStatus;
**    		DWORD gvsProgress; //     32
**    		sSCSI_ATTR gvsScsi;
**    		BYTE gvsMemberDisks;
**    		BYTE gvsRaidLevel; //     8
**    		BYTE gvsNewMemberDisks;
**    		BYTE gvsNewRaidLevel;
**    		BYTE gvsRaidSetNumber;
**    		BYTE gvsRes0; //     4
**    		BYTE gvsRes1[4]; //     64 bytes
**    	} sGUI_VOLUMESET, *pGUI_VOLUMESET;
**      GUI_GET_INFO_P : Get Physical Drive Information
**    		byte 0,1        : length
**    		byte 2          : command code 0x22
**    		byte 3          : drive # (from 0 to max-channels - 1)
**    	typedef struct sGUI_PHY_DRV
**    	{
**    		BYTE gpdModelName[40];
**    		BYTE gpdSerialNumber[20];
**    		BYTE gpdFirmRev[8];
**    		DWORD gpdCapacity;
**    		DWORD gpdCapacityX; //     Reserved for expansion
**    		BYTE gpdDeviceState;
**    		BYTE gpdPioMode;
**    		BYTE gpdCurrentUdmaMode;
**    		BYTE gpdUdmaMode;
**    		BYTE gpdDriveSelect;
**    		BYTE gpdRaidNumber; //     0xff if not belongs to a raid set
**    		sSCSI_ATTR gpdScsi;
**    		BYTE gpdReserved[40]; //     Total to 128 bytes
**    	} sGUI_PHY_DRV, *pGUI_PHY_DRV;
**    	GUI_GET_INFO_S : Get System Information
**      	byte 0,1        : length
**      	byte 2          : command code 0x23
**    	typedef struct sCOM_ATTR
**    	{
**    		BYTE comBaudRate;
**    		BYTE comDataBits;
**    		BYTE comStopBits;
**    		BYTE comParity;
**    		BYTE comFlowControl;
**    	} sCOM_ATTR, *pCOM_ATTR;
**    	typedef struct sSYSTEM_INFO
**    	{
**    		BYTE gsiVendorName[40];
**    		BYTE gsiSerialNumber[16];
**    		BYTE gsiFirmVersion[16];
**    		BYTE gsiBootVersion[16];
**    		BYTE gsiMbVersion[16];
**    		BYTE gsiModelName[8];
**    		BYTE gsiLocalIp[4];
**    		BYTE gsiCurrentIp[4];
**    		DWORD gsiTimeTick;
**    		DWORD gsiCpuSpeed;
**    		DWORD gsiICache;
**    		DWORD gsiDCache;
**    		DWORD gsiScache;
**    		DWORD gsiMemorySize;
**    		DWORD gsiMemorySpeed;
**    		DWORD gsiEvents;
**    		BYTE gsiMacAddress[6];
**    		BYTE gsiDhcp;
**    		BYTE gsiBeeper;
**    		BYTE gsiChannelUsage;
**    		BYTE gsiMaxAtaMode;
**    		BYTE gsiSdramEcc; //     1:if ECC enabled
**    		BYTE gsiRebuildPriority;
**    		sCOM_ATTR gsiComA; //     5 bytes
**    		sCOM_ATTR gsiComB; //     5 bytes
**    		BYTE gsiIdeChannels;
**    		BYTE gsiScsiHostChannels;
**    		BYTE gsiIdeHostChannels;
**    		BYTE gsiMaxVolumeSet;
**    		BYTE gsiMaxRaidSet;
**    		BYTE gsiEtherPort; //     1:if ether net port supported
**    		BYTE gsiRaid6Engine; //     1:Raid6 engine supported
**    		BYTE gsiRes[75];
**    	} sSYSTEM_INFO, *pSYSTEM_INFO;
**    	GUI_CLEAR_EVENT : Clear System Event
**    		byte 0,1        : length
**    		byte 2          : command code 0x24
**      GUI_MUTE_BEEPER : Mute current beeper
**    		byte 0,1        : length
**    		byte 2          : command code 0x30
**      GUI_BEEPER_SETTING : Disable beeper
**    		byte 0,1        : length
**    		byte 2          : command code 0x31
**    		byte 3          : 0->disable, 1->enable
**      GUI_SET_PASSWORD : Change password
**    		byte 0,1        : length
**    		byte 2 			: command code 0x32
**    		byte 3 			: pass word length ( must <= 15 )
**    		byte 4 			: password (must be alpha-numerical)
**    	GUI_HOST_INTERFACE_MODE : Set host interface mode
**    		byte 0,1        : length
**    		byte 2 			: command code 0x33
**    		byte 3 			: 0->Independent, 1->cluster
**      GUI_REBUILD_PRIORITY : Set rebuild priority
**    		byte 0,1        : length
**    		byte 2 			: command code 0x34
**    		byte 3 			: 0/1/2/3 (low->high)
**      GUI_MAX_ATA_MODE : Set maximum ATA mode to be used
**    		byte 0,1        : length
**    		byte 2 			: command code 0x35
**    		byte 3 			: 0/1/2/3 (133/100/66/33)
**      GUI_RESET_CONTROLLER : Reset Controller
**    		byte 0,1        : length
**    		byte 2          : command code 0x36
**                            *Response with VT100 screen (discard it)
**      GUI_COM_PORT_SETTING : COM port setting
**    		byte 0,1        : length
**    		byte 2 			: command code 0x37
**    		byte 3 			: 0->COMA (term port),
**    					  1->COMB (debug port)
**    		byte 4 			: 0/1/2/3/4/5/6/7
**    			(1200/2400/4800/9600/19200/38400/57600/115200)
**    		byte 5 			: data bit
**    					(0:7 bit, 1:8 bit : must be 8 bit)
**    		byte 6 			: stop bit (0:1, 1:2 stop bits)
**    		byte 7 			: parity (0:none, 1:off, 2:even)
**    		byte 8 			: flow control
**    			(0:none, 1:xon/xoff, 2:hardware => must use none)
**      GUI_NO_OPERATION : No operation
**    		byte 0,1        : length
**    		byte 2          : command code 0x38
**      GUI_DHCP_IP : Set DHCP option and local IP address
**    		byte 0,1        : length
**    		byte 2          : command code 0x39
**    		byte 3          : 0:dhcp disabled, 1:dhcp enabled
**    		byte 4/5/6/7    : IP address
**      GUI_CREATE_PASS_THROUGH : Create pass through disk
**    		byte 0,1        : length
**    		byte 2 			: command code 0x40
**    		byte 3 			: device #
**    		byte 4 			: scsi channel (0/1)
**    		byte 5 			: scsi id (0-->15)
**    		byte 6 			: scsi lun (0-->7)
**    		byte 7 			: tagged queue (1 : enabled)
**    		byte 8 			: cache mode (1 : enabled)
**    		byte 9 			: max speed (0/1/2/3/4,
**    			async/20/40/80/160 for scsi)
**    			(0/1/2/3/4, 33/66/100/133/150 for ide  )
**      GUI_MODIFY_PASS_THROUGH : Modify pass through disk
**    		byte 0,1        : length
**    		byte 2 			: command code 0x41
**    		byte 3 			: device #
**    		byte 4 			: scsi channel (0/1)
**    		byte 5 			: scsi id (0-->15)
**    		byte 6 			: scsi lun (0-->7)
**    		byte 7 			: tagged queue (1 : enabled)
**    		byte 8 			: cache mode (1 : enabled)
**    		byte 9 			: max speed (0/1/2/3/4,
**    					async/20/40/80/160 for scsi)
**    			(0/1/2/3/4, 33/66/100/133/150 for ide  )
**      GUI_DELETE_PASS_THROUGH : Delete pass through disk
**    		byte 0,1        : length
**    		byte 2          : command code 0x42
**    		byte 3          : device# to be deleted
**      GUI_IDENTIFY_DEVICE : Identify Device
**    		byte 0,1        : length
**    		byte 2          : command code 0x43
**    		byte 3          : Flash Method
**    				(0:flash selected, 1:flash not selected)
**    		byte 4/5/6/7    : IDE device mask to be flashed
**                           note .... no response data available
**    	GUI_CREATE_RAIDSET : Create Raid Set
**    		byte 0,1        : length
**    		byte 2          : command code 0x50
**    		byte 3/4/5/6    : device mask
**    		byte 7-22       : raidset name (if byte 7 == 0:use default)
**      GUI_DELETE_RAIDSET : Delete Raid Set
**    		byte 0,1        : length
**    		byte 2          : command code 0x51
**    		byte 3          : raidset#
**    	GUI_EXPAND_RAIDSET : Expand Raid Set
**    		byte 0,1        : length
**    		byte 2          : command code 0x52
**    		byte 3          : raidset#
**    		byte 4/5/6/7    : device mask for expansion
**    		byte 8/9/10     : (8:0 no change, 1 change, 0xff:terminate,
**    				9:new raid level,
**    				10:new stripe size
**    				0/1/2/3/4/5->4/8/16/32/64/128K )
**    		byte 11/12/13   : repeat for each volume in the raidset
**      GUI_ACTIVATE_RAIDSET : Activate incomplete raid set
**    		byte 0,1        : length
**    		byte 2          : command code 0x53
**    		byte 3          : raidset#
**      GUI_CREATE_HOT_SPARE : Create hot spare disk
**    		byte 0,1        : length
**    		byte 2          : command code 0x54
**    		byte 3/4/5/6    : device mask for hot spare creation
**    	GUI_DELETE_HOT_SPARE : Delete hot spare disk
**    		byte 0,1        : length
**    		byte 2          : command code 0x55
**    		byte 3/4/5/6    : device mask for hot spare deletion
**    	GUI_CREATE_VOLUME : Create volume set
**    		byte 0,1        : length
**    		byte 2          : command code 0x60
**    		byte 3          : raidset#
**    		byte 4-19       : volume set name
**    				(if byte4 == 0, use default)
**    		byte 20-27      : volume capacity (blocks)
**    		byte 28 		: raid level
**    		byte 29 		: stripe size
**    				(0/1/2/3/4/5->4/8/16/32/64/128K)
**    		byte 30 		: channel
**    		byte 31 		: ID
**    		byte 32 		: LUN
**    		byte 33 		: 1 enable tag
**    		byte 34 		: 1 enable cache
**    		byte 35 		: speed
**    		(0/1/2/3/4->async/20/40/80/160 for scsi)
**    		(0/1/2/3/4->33/66/100/133/150 for IDE  )
**    		byte 36 		: 1 to select quick init
**
**    	GUI_MODIFY_VOLUME : Modify volume Set
**    		byte 0,1        : length
**    		byte 2          : command code 0x61
**    		byte 3          : volumeset#
**    		byte 4-19       : new volume set name
**    		(if byte4 == 0, not change)
**    		byte 20-27      : new volume capacity (reserved)
**    		byte 28 		: new raid level
**    		byte 29 		: new stripe size
**    		(0/1/2/3/4/5->4/8/16/32/64/128K)
**    		byte 30 		: new channel
**    		byte 31 		: new ID
**    		byte 32 		: new LUN
**    		byte 33 		: 1 enable tag
**    		byte 34 		: 1 enable cache
**    		byte 35 		: speed
**    		(0/1/2/3/4->async/20/40/80/160 for scsi)
**    		(0/1/2/3/4->33/66/100/133/150 for IDE  )
**    	GUI_DELETE_VOLUME : Delete volume set
**    		byte 0,1        : length
**    		byte 2          : command code 0x62
**    		byte 3          : volumeset#
**    	GUI_START_CHECK_VOLUME : Start volume consistency check
**    		byte 0,1        : length
**    		byte 2          : command code 0x63
**    		byte 3          : volumeset#
**    	GUI_STOP_CHECK_VOLUME : Stop volume consistency check
**    		byte 0,1        : length
**    		byte 2          : command code 0x64
** ---------------------------------------------------------------------
**    4. Returned data
** ---------------------------------------------------------------------
**    	(A) Header          : 3 bytes sequence (0x5E, 0x01, 0x61)
**    	(B) Length          : 2 bytes
**    			(low byte 1st, excludes length and checksum byte)
**    	(C) status or data  :
**           <1> If length == 1 ==> 1 byte status code
**    		#define GUI_OK                    0x41
**    		#define GUI_RAIDSET_NOT_NORMAL    0x42
**    		#define GUI_VOLUMESET_NOT_NORMAL  0x43
**    		#define GUI_NO_RAIDSET            0x44
**    		#define GUI_NO_VOLUMESET          0x45
**    		#define GUI_NO_PHYSICAL_DRIVE     0x46
**    		#define GUI_PARAMETER_ERROR       0x47
**    		#define GUI_UNSUPPORTED_COMMAND   0x48
**    		#define GUI_DISK_CONFIG_CHANGED   0x49
**    		#define GUI_INVALID_PASSWORD      0x4a
**    		#define GUI_NO_DISK_SPACE         0x4b
**    		#define GUI_CHECKSUM_ERROR        0x4c
**    		#define GUI_PASSWORD_REQUIRED     0x4d
**           <2> If length > 1 ==>
**    		data block returned from controller
**    		and the contents depends on the command code
**    	(E) Checksum        : checksum of length and status or data byte
**************************************************************************