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linux_old1/Documentation/scsi/arcmsr_spec.txt

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[SCSI] arcmsr: initial driver, version 1.20.00.13 arcmsr is a driver for the Areca Raid controller, a host based RAID subsystem that speaks SCSI at the firmware level. This patch is quite a clean up over the initial submission with contributions from: Randy Dunlap <rdunlap@xenotime.net> Christoph Hellwig <hch@lst.de> Matthew Wilcox <matthew@wil.cx> Adrian Bunk <bunk@stusta.de> Signed-off-by: Erich Chen <erich@areca.com.tw> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-07-12 23:59:32 +08:00
*******************************************************************************
** ARECA FIRMWARE SPEC
*******************************************************************************
** Usage of IOP331 adapter
** (All In/Out is in IOP331's view)
Typo fixes retrun -> return Typo fixes retrun -> return Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com> Signed-off-by: Adrian Bunk <bunk@kernel.org>
2007-10-20 08:13:26 +08:00
** 1. Message 0 --> InitThread message and return code
[SCSI] arcmsr: initial driver, version 1.20.00.13 arcmsr is a driver for the Areca Raid controller, a host based RAID subsystem that speaks SCSI at the firmware level. This patch is quite a clean up over the initial submission with contributions from: Randy Dunlap <rdunlap@xenotime.net> Christoph Hellwig <hch@lst.de> Matthew Wilcox <matthew@wil.cx> Adrian Bunk <bunk@stusta.de> Signed-off-by: Erich Chen <erich@areca.com.tw> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-07-12 23:59:32 +08:00
** 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
**************************************************************************