Attachment 153490 Details for Bug 205897 – The patch for RHEL 5.1

[patch] The patch for RHEL 5.1

patch-areca (text/plain), 108.19 KB, created by Nick Cheng on 2007-04-26 10:10:32 UTC

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Creator: Nick Cheng

Created: 2007-04-26 10:10:32 UTC

Size: 108.19 KB

patch

obsolete

>diff --git a/Documentation/scsi/ChangeLog.arcmsr b/Documentation/scsi/ChangeLog.arcmsr
>new file mode 100644
>index 0000000..162c47f
>--- /dev/null
>+++ b/Documentation/scsi/ChangeLog.arcmsr
>@@ -0,0 +1,56 @@
>+**************************************************************************
>+** History
>+**
>+**   REV#         DATE             NAME         DESCRIPTION
>+** 1.00.00.00    3/31/2004       Erich Chen     First release
>+** 1.10.00.04    7/28/2004       Erich Chen     modify for ioctl
>+** 1.10.00.06    8/28/2004       Erich Chen     modify for 2.6.x
>+** 1.10.00.08    9/28/2004       Erich Chen     modify for x86_64
>+** 1.10.00.10   10/10/2004       Erich Chen     bug fix for SMP & ioctl
>+** 1.20.00.00   11/29/2004       Erich Chen     bug fix with arcmsr_bus_reset when PHY error
>+** 1.20.00.02   12/09/2004       Erich Chen     bug fix with over 2T bytes RAID Volume
>+** 1.20.00.04    1/09/2005       Erich Chen     fits for Debian linux kernel version 2.2.xx
>+** 1.20.00.05    2/20/2005       Erich Chen     cleanly as look like a Linux driver at 2.6.x
>+**                                              thanks for peoples kindness comment
>+**						Kornel Wieliczek
>+**						Christoph Hellwig
>+**						Adrian Bunk
>+**						Andrew Morton
>+**						Christoph Hellwig
>+**						James Bottomley
>+**						Arjan van de Ven
>+** 1.20.00.06    3/12/2005       Erich Chen     fix with arcmsr_pci_unmap_dma "unsigned long" cast,
>+**						modify PCCB POOL allocated by "dma_alloc_coherent"
>+**						(Kornel Wieliczek's comment)
>+** 1.20.00.07    3/23/2005       Erich Chen     bug fix with arcmsr_scsi_host_template_init
>+**						occur segmentation fault,
>+**						if RAID adapter does not on PCI slot
>+**						and modprobe/rmmod this driver twice.
>+**						bug fix enormous stack usage (Adrian Bunk's comment)
>+** 1.20.00.08    6/23/2005       Erich Chen     bug fix with abort command,
>+**						in case of heavy loading when sata cable
>+**						working on low quality connection
>+** 1.20.00.09    9/12/2005       Erich Chen     bug fix with abort command handling, firmware version check
>+**						and firmware update notify for hardware bug fix
>+** 1.20.00.10    9/23/2005       Erich Chen     enhance sysfs function for change driver's max tag Q number.
>+**						add DMA_64BIT_MASK for backward compatible with all 2.6.x
>+**						add some useful message for abort command
>+**						add ioctl code 'ARCMSR_IOCTL_FLUSH_ADAPTER_CACHE'
>+**						customer can send this command for sync raid volume data
>+** 1.20.00.11    9/29/2005       Erich Chen     by comment of Arjan van de Ven fix incorrect msleep redefine
>+**						cast off sizeof(dma_addr_t) condition for 64bit pci_set_dma_mask
>+** 1.20.00.12    9/30/2005       Erich Chen     bug fix with 64bit platform's ccbs using if over 4G system memory
>+**						change 64bit pci_set_consistent_dma_mask into 32bit
>+**						increcct adapter count if adapter initialize fail.
>+**						miss edit at arcmsr_build_ccb....
>+**						psge += sizeof(struct _SG64ENTRY *) =>
>+**						psge += sizeof(struct _SG64ENTRY)
>+**						64 bits sg entry would be incorrectly calculated
>+**						thanks Kornel Wieliczek give me kindly notify
>+**						and detail description
>+** 1.20.00.13   11/15/2005       Erich Chen     scheduling pending ccb with FIFO
>+**						change the architecture of arcmsr command queue list
>+**						for linux standard list
>+**						enable usage of pci message signal interrupt
>+**						follow Randy.Danlup kindness suggestion cleanup this code
>+**************************************************************************
>\ No newline at end of file
>diff --git a/Documentation/scsi/arcmsr_spec.txt b/Documentation/scsi/arcmsr_spec.txt
>new file mode 100644
>index 0000000..5e00423
>--- /dev/null
>+++ b/Documentation/scsi/arcmsr_spec.txt
>@@ -0,0 +1,574 @@
>+*******************************************************************************
>+**                            ARECA FIRMWARE SPEC
>+*******************************************************************************
>+**	Usage of IOP331 adapter
>+**	(All In/Out is in IOP331's view)
>+**	1. Message 0 --> InitThread message and retrun 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
>+**************************************************************************
>diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
>index da70464..ffe1c0c 100644
>--- a/drivers/scsi/Kconfig
>+++ b/drivers/scsi/Kconfig
>@@ -461,6 +461,20 @@ config SCSI_IN2000
> 	  To compile this driver as a module, choose M here: the
> 	  module will be called in2000.
> 
>+config SCSI_ARCMSR
>+	tristate "ARECA ARC11X0[PCI-X]/ARC12X0[PCI-EXPRESS] SATA-RAID support"
>+	depends on PCI && SCSI
>+	help
>+	  This driver supports all of ARECA's SATA RAID controller cards.
>+	  This is an ARECA-maintained driver by Erich Chen.
>+	  If you have any problems, please mail to: < erich@areca.com.tw >
>+	  Areca supports Linux RAID config tools.
>+
>+	  < http://www.areca.com.tw >
>+
>+	  To compile this driver as a module, choose M here: the
>+	  module will be called arcmsr (modprobe arcmsr).
>+
> source "drivers/scsi/megaraid/Kconfig.megaraid"
> 
> config SCSI_SATA
>diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
>index ddc0b3d..123dfe0 100644
>--- a/drivers/scsi/Makefile
>+++ b/drivers/scsi/Makefile
>@@ -58,6 +58,7 @@ obj-$(CONFIG_SCSI_PSI240I)	+= psi240i.o
> obj-$(CONFIG_SCSI_BUSLOGIC)	+= BusLogic.o
> obj-$(CONFIG_SCSI_DPT_I2O)	+= dpt_i2o.o
> obj-$(CONFIG_SCSI_U14_34F)	+= u14-34f.o
>+obj-$(CONFIG_SCSI_ARCMSR)	+= arcmsr/
> obj-$(CONFIG_SCSI_ULTRASTOR)	+= ultrastor.o
> obj-$(CONFIG_SCSI_AHA152X)	+= aha152x.o
> obj-$(CONFIG_SCSI_AHA1542)	+= aha1542.o
>diff --git a/drivers/scsi/arcmsr/Makefile b/drivers/scsi/arcmsr/Makefile
>new file mode 100644
>index 0000000..721aced
>--- /dev/null
>+++ b/drivers/scsi/arcmsr/Makefile
>@@ -0,0 +1,6 @@
>+# File: drivers/arcmsr/Makefile
>+# Makefile for the ARECA PCI-X PCI-EXPRESS SATA RAID controllers SCSI driver.
>+
>+arcmsr-objs := arcmsr_attr.o arcmsr_hba.o
>+
>+obj-$(CONFIG_SCSI_ARCMSR) := arcmsr.o
>diff --git a/drivers/scsi/arcmsr/arcmsr.h b/drivers/scsi/arcmsr/arcmsr.h
>new file mode 100644
>index 0000000..aff96db
>--- /dev/null
>+++ b/drivers/scsi/arcmsr/arcmsr.h
>@@ -0,0 +1,472 @@
>+/*
>+*******************************************************************************
>+**        O.S   : Linux
>+**   FILE NAME  : arcmsr.h
>+**        BY    : Erich Chen
>+**   Description: SCSI RAID Device Driver for
>+**                ARECA RAID Host adapter
>+*******************************************************************************
>+** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved.
>+**
>+**     Web site: www.areca.com.tw
>+**       E-mail: erich@areca.com.tw
>+**
>+** This program is free software; you can redistribute it and/or modify
>+** it under the terms of the GNU General Public License version 2 as
>+** published by the Free Software Foundation.
>+** This program is distributed in the hope that it will be useful,
>+** but WITHOUT ANY WARRANTY; without even the implied warranty of
>+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>+** GNU General Public License for more details.
>+*******************************************************************************
>+** Redistribution and use in source and binary forms, with or without
>+** modification, are permitted provided that the following conditions
>+** are met:
>+** 1. Redistributions of source code must retain the above copyright
>+**    notice, this list of conditions and the following disclaimer.
>+** 2. Redistributions in binary form must reproduce the above copyright
>+**    notice, this list of conditions and the following disclaimer in the
>+**    documentation and/or other materials provided with the distribution.
>+** 3. The name of the author may not be used to endorse or promote products
>+**    derived from this software without specific prior written permission.
>+**
>+** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
>+** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
>+** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
>+** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
>+** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT
>+** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
>+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
>+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
>+**(INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
>+** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>+*******************************************************************************
>+*/
>+#include <linux/interrupt.h>
>+
>+struct class_device_attribute;
>+
>+#define ARCMSR_MAX_OUTSTANDING_CMD 						256
>+#define ARCMSR_MAX_FREECCB_NUM							288
>+#define ARCMSR_DRIVER_VERSION				"Driver Version 1.20.00.13"
>+#define ARCMSR_SCSI_INITIATOR_ID						255
>+#define ARCMSR_MAX_XFER_SECTORS							512
>+#define ARCMSR_MAX_TARGETID							 17
>+#define ARCMSR_MAX_TARGETLUN							  8
>+#define ARCMSR_MAX_CMD_PERLUN				 ARCMSR_MAX_OUTSTANDING_CMD
>+#define ARCMSR_MAX_QBUFFER						       4096
>+#define ARCMSR_MAX_SG_ENTRIES							 38
>+
>+/*
>+*******************************************************************************
>+**        split 64bits dma addressing
>+*******************************************************************************
>+*/
>+#define dma_addr_hi32(addr)               (uint32_t) ((addr>>16)>>16)
>+#define dma_addr_lo32(addr)               (uint32_t) (addr & 0xffffffff)
>+/*
>+*******************************************************************************
>+**        MESSAGE CONTROL CODE
>+*******************************************************************************
>+*/
>+struct CMD_MESSAGE
>+{
>+      uint32_t HeaderLength;
>+      uint8_t  Signature[8];
>+      uint32_t Timeout;
>+      uint32_t ControlCode;
>+      uint32_t ReturnCode;
>+      uint32_t Length;
>+};
>+/*
>+*******************************************************************************
>+**        IOP Message Transfer Data for user space
>+*******************************************************************************
>+*/
>+struct CMD_MESSAGE_FIELD
>+{
>+    struct CMD_MESSAGE			cmdmessage;
>+    uint8_t				messagedatabuffer[1032];
>+};
>+/* IOP message transfer */
>+#define ARCMSR_MESSAGE_FAIL             0x0001
>+/* DeviceType */
>+#define ARECA_SATA_RAID				0x90000000
>+/* FunctionCode */
>+#define FUNCTION_READ_RQBUFFER			0x0801
>+#define FUNCTION_WRITE_WQBUFFER			0x0802
>+#define FUNCTION_CLEAR_RQBUFFER			0x0803
>+#define FUNCTION_CLEAR_WQBUFFER			0x0804
>+#define FUNCTION_CLEAR_ALLQBUFFER		0x0805
>+#define FUNCTION_RETURN_CODE_3F			0x0806
>+#define FUNCTION_SAY_HELLO			0x0807
>+#define FUNCTION_SAY_GOODBYE			0x0808
>+#define FUNCTION_FLUSH_ADAPTER_CACHE		0x0809
>+/* ARECA IO CONTROL CODE*/
>+#define ARCMSR_MESSAGE_READ_RQBUFFER       \
>+	ARECA_SATA_RAID | FUNCTION_READ_RQBUFFER
>+#define ARCMSR_MESSAGE_WRITE_WQBUFFER      \
>+	ARECA_SATA_RAID | FUNCTION_WRITE_WQBUFFER
>+#define ARCMSR_MESSAGE_CLEAR_RQBUFFER      \
>+	ARECA_SATA_RAID | FUNCTION_CLEAR_RQBUFFER
>+#define ARCMSR_MESSAGE_CLEAR_WQBUFFER      \
>+	ARECA_SATA_RAID | FUNCTION_CLEAR_WQBUFFER
>+#define ARCMSR_MESSAGE_CLEAR_ALLQBUFFER    \
>+	ARECA_SATA_RAID | FUNCTION_CLEAR_ALLQBUFFER
>+#define ARCMSR_MESSAGE_RETURN_CODE_3F      \
>+	ARECA_SATA_RAID | FUNCTION_RETURN_CODE_3F
>+#define ARCMSR_MESSAGE_SAY_HELLO           \
>+	ARECA_SATA_RAID | FUNCTION_SAY_HELLO
>+#define ARCMSR_MESSAGE_SAY_GOODBYE         \
>+	ARECA_SATA_RAID | FUNCTION_SAY_GOODBYE
>+#define ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE \
>+	ARECA_SATA_RAID | FUNCTION_FLUSH_ADAPTER_CACHE
>+/* ARECA IOCTL ReturnCode */
>+#define ARCMSR_MESSAGE_RETURNCODE_OK              0x00000001
>+#define ARCMSR_MESSAGE_RETURNCODE_ERROR           0x00000006
>+#define ARCMSR_MESSAGE_RETURNCODE_3F              0x0000003F
>+/*
>+*************************************************************
>+**   structure for holding DMA address data
>+*************************************************************
>+*/
>+#define IS_SG64_ADDR                0x01000000 /* bit24 */
>+struct  SG32ENTRY
>+{
>+	uint32_t					length;
>+	uint32_t					address;
>+};
>+struct  SG64ENTRY
>+{
>+ 	uint32_t					length;
>+ 	uint32_t					address;
>+ 	uint32_t					addresshigh;
>+};
>+struct SGENTRY_UNION
>+{
>+	union
>+	{
>+		struct SG32ENTRY            sg32entry;
>+		struct SG64ENTRY            sg64entry;
>+	}u;
>+};
>+/*
>+********************************************************************
>+**      Q Buffer of IOP Message Transfer
>+********************************************************************
>+*/
>+struct QBUFFER
>+{
>+	uint32_t      data_len;
>+	uint8_t       data[124];
>+};
>+/*
>+*******************************************************************************
>+**      FIRMWARE INFO
>+*******************************************************************************
>+*/
>+struct FIRMWARE_INFO
>+{
>+	uint32_t      signature;                /*0, 00-03*/
>+	uint32_t      request_len;              /*1, 04-07*/
>+	uint32_t      numbers_queue;            /*2, 08-11*/
>+	uint32_t      sdram_size;               /*3, 12-15*/
>+	uint32_t      ide_channels;             /*4, 16-19*/
>+	char          vendor[40];               /*5, 20-59*/
>+	char          model[8];                 /*15, 60-67*/
>+	char          firmware_ver[16];         /*17, 68-83*/
>+	char          device_map[16];           /*21, 84-99*/
>+};
>+/* signature of set and get firmware config */
>+#define ARCMSR_SIGNATURE_GET_CONFIG                   0x87974060
>+#define ARCMSR_SIGNATURE_SET_CONFIG                   0x87974063
>+/* message code of inbound message register */
>+#define ARCMSR_INBOUND_MESG0_NOP                      0x00000000
>+#define ARCMSR_INBOUND_MESG0_GET_CONFIG               0x00000001
>+#define ARCMSR_INBOUND_MESG0_SET_CONFIG               0x00000002
>+#define ARCMSR_INBOUND_MESG0_ABORT_CMD                0x00000003
>+#define ARCMSR_INBOUND_MESG0_STOP_BGRB                0x00000004
>+#define ARCMSR_INBOUND_MESG0_FLUSH_CACHE              0x00000005
>+#define ARCMSR_INBOUND_MESG0_START_BGRB               0x00000006
>+#define ARCMSR_INBOUND_MESG0_CHK331PENDING            0x00000007
>+#define ARCMSR_INBOUND_MESG0_SYNC_TIMER               0x00000008
>+/* doorbell interrupt generator */
>+#define ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK           0x00000001
>+#define ARCMSR_INBOUND_DRIVER_DATA_READ_OK            0x00000002
>+#define ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK          0x00000001
>+#define ARCMSR_OUTBOUND_IOP331_DATA_READ_OK           0x00000002
>+/* ccb areca cdb flag */
>+#define ARCMSR_CCBPOST_FLAG_SGL_BSIZE                 0x80000000
>+#define ARCMSR_CCBPOST_FLAG_IAM_BIOS                  0x40000000
>+#define ARCMSR_CCBREPLY_FLAG_IAM_BIOS                 0x40000000
>+#define ARCMSR_CCBREPLY_FLAG_ERROR                    0x10000000
>+/* outbound firmware ok */
>+#define ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK             0x80000000
>+/*
>+*******************************************************************************
>+**    ARECA SCSI COMMAND DESCRIPTOR BLOCK size 0x1F8 (504)
>+*******************************************************************************
>+*/
>+struct ARCMSR_CDB
>+{
>+	uint8_t							Bus;
>+	uint8_t							TargetID;
>+	uint8_t							LUN;
>+	uint8_t							Function;
>+
>+	uint8_t							CdbLength;
>+	uint8_t							sgcount;
>+	uint8_t							Flags;
>+#define ARCMSR_CDB_FLAG_SGL_BSIZE          0x01
>+#define ARCMSR_CDB_FLAG_BIOS               0x02
>+#define ARCMSR_CDB_FLAG_WRITE              0x04
>+#define ARCMSR_CDB_FLAG_SIMPLEQ            0x00
>+#define ARCMSR_CDB_FLAG_HEADQ              0x08
>+#define ARCMSR_CDB_FLAG_ORDEREDQ           0x10
>+	uint8_t							Reserved1;
>+
>+	uint32_t						Context;
>+	uint32_t						DataLength;
>+
>+	uint8_t							Cdb[16];
>+
>+	uint8_t							DeviceStatus;
>+#define ARCMSR_DEV_CHECK_CONDITION          0x02
>+#define ARCMSR_DEV_SELECT_TIMEOUT			0xF0
>+#define ARCMSR_DEV_ABORTED				0xF1
>+#define ARCMSR_DEV_INIT_FAIL				0xF2
>+	uint8_t							SenseData[15];
>+
>+	union
>+	{
>+		struct SG32ENTRY                sg32entry[ARCMSR_MAX_SG_ENTRIES];
>+		struct SG64ENTRY                sg64entry[ARCMSR_MAX_SG_ENTRIES];
>+	} u;
>+};
>+/*
>+*******************************************************************************
>+**     Messaging Unit (MU) of the Intel R 80331 I/O processor (80331)
>+*******************************************************************************
>+*/
>+struct MessageUnit
>+{
>+	uint32_t	resrved0[4];			/*0000 000F*/
>+	uint32_t	inbound_msgaddr0;		/*0010 0013*/
>+	uint32_t	inbound_msgaddr1;		/*0014 0017*/
>+	uint32_t	outbound_msgaddr0;		/*0018 001B*/
>+	uint32_t	outbound_msgaddr1;		/*001C 001F*/
>+	uint32_t	inbound_doorbell;		/*0020 0023*/
>+	uint32_t	inbound_intstatus;		/*0024 0027*/
>+	uint32_t	inbound_intmask;		/*0028 002B*/
>+	uint32_t	outbound_doorbell;		/*002C 002F*/
>+	uint32_t	outbound_intstatus;		/*0030 0033*/
>+	uint32_t	outbound_intmask;		/*0034 0037*/
>+	uint32_t	reserved1[2];			/*0038 003F*/
>+	uint32_t	inbound_queueport;		/*0040 0043*/
>+	uint32_t	outbound_queueport;     	/*0044 0047*/
>+	uint32_t	reserved2[2];			/*0048 004F*/
>+	uint32_t	reserved3[492];			/*0050 07FF 492*/
>+	uint32_t	reserved4[128];			/*0800 09FF 128*/
>+	uint32_t	message_rwbuffer[256];		/*0a00 0DFF 256*/
>+	uint32_t	message_wbuffer[32];		/*0E00 0E7F  32*/
>+	uint32_t	reserved5[32];			/*0E80 0EFF  32*/
>+	uint32_t	message_rbuffer[32];		/*0F00 0F7F  32*/
>+	uint32_t	reserved6[32];			/*0F80 0FFF  32*/
>+};
>+/*
>+*******************************************************************************
>+**                 Adapter Control Block
>+*******************************************************************************
>+*/
>+struct AdapterControlBlock
>+{
>+	struct pci_dev *		pdev;
>+	struct Scsi_Host *		host;
>+	unsigned long			vir2phy_offset;
>+	/* Offset is used in making arc cdb physical to virtual calculations */
>+	uint32_t			outbound_int_enable;
>+
>+	struct MessageUnit __iomem *		pmu;
>+	/* message unit ATU inbound base address0 */
>+
>+	uint32_t			acb_flags;
>+#define ACB_F_SCSISTOPADAPTER         0x0001
>+#define ACB_F_MSG_STOP_BGRB           0x0002
>+	/* stop RAID background rebuild */
>+#define ACB_F_MSG_START_BGRB          0x0004
>+	/* stop RAID background rebuild */
>+#define ACB_F_IOPDATA_OVERFLOW        0x0008
>+	/* iop message data rqbuffer overflow */
>+#define ACB_F_MESSAGE_WQBUFFER_CLEARED  0x0010
>+	/* message clear wqbuffer */
>+#define ACB_F_MESSAGE_RQBUFFER_CLEARED  0x0020
>+	/* message clear rqbuffer */
>+#define ACB_F_MESSAGE_WQBUFFER_READED   0x0040
>+#define ACB_F_BUS_RESET               0x0080
>+#define ACB_F_IOP_INITED              0x0100
>+	/* iop init */
>+
>+	struct CommandControlBlock *			pccb_pool[ARCMSR_MAX_FREECCB_NUM];
>+	/* used for memory free */
>+	struct list_head		ccb_free_list;
>+	/* head of free ccb list */
>+	atomic_t			ccboutstandingcount;
>+
>+	void *				dma_coherent;
>+	/* dma_coherent used for memory free */
>+	dma_addr_t			dma_coherent_handle;
>+	/* dma_coherent_handle used for memory free */
>+
>+	uint8_t				rqbuffer[ARCMSR_MAX_QBUFFER];
>+	/* data collection buffer for read from 80331 */
>+	int32_t				rqbuf_firstindex;
>+	/* first of read buffer  */
>+	int32_t				rqbuf_lastindex;
>+	/* last of read buffer   */
>+	uint8_t				wqbuffer[ARCMSR_MAX_QBUFFER];
>+	/* data collection buffer for write to 80331  */
>+	int32_t				wqbuf_firstindex;
>+	/* first of write buffer */
>+	int32_t				wqbuf_lastindex;
>+	/* last of write buffer  */
>+	uint8_t				devstate[ARCMSR_MAX_TARGETID][ARCMSR_MAX_TARGETLUN];
>+	/* id0 ..... id15, lun0...lun7 */
>+#define ARECA_RAID_GONE               0x55
>+#define ARECA_RAID_GOOD               0xaa
>+	uint32_t			num_resets;
>+	uint32_t			num_aborts;
>+	uint32_t			firm_request_len;
>+	uint32_t			firm_numbers_queue;
>+	uint32_t			firm_sdram_size;
>+	uint32_t			firm_hd_channels;
>+	char				firm_model[12];
>+	char				firm_version[20];
>+};/* HW_DEVICE_EXTENSION */
>+/*
>+*******************************************************************************
>+**                   Command Control Block
>+**             this CCB length must be 32 bytes boundary
>+*******************************************************************************
>+*/
>+struct CommandControlBlock
>+{
>+	struct ARCMSR_CDB		arcmsr_cdb;
>+	/*
>+	** 0-503 (size of CDB=504):
>+	** arcmsr messenger scsi command descriptor size 504 bytes
>+	*/
>+	uint32_t			cdb_shifted_phyaddr;
>+	/* 504-507 */
>+	uint32_t			reserved1;
>+	/* 508-511 */
>+#if BITS_PER_LONG == 64
>+	/*  ======================512+64 bytes========================  */
>+	struct list_head		list;
>+	/* 512-527 16 bytes next/prev ptrs for ccb lists */
>+	struct scsi_cmnd *		pcmd;
>+	/* 528-535 8 bytes pointer of linux scsi command */
>+	struct AdapterControlBlock *	acb;
>+	/* 536-543 8 bytes pointer of acb */
>+
>+	uint16_t			ccb_flags;
>+	/* 544-545 */
>+	#define		CCB_FLAG_READ			0x0000
>+	#define		CCB_FLAG_WRITE			0x0001
>+	#define		CCB_FLAG_ERROR			0x0002
>+	#define		CCB_FLAG_FLUSHCACHE		0x0004
>+	#define		CCB_FLAG_MASTER_ABORTED		0x0008
>+	uint16_t			startdone;
>+	/* 546-547 */
>+	#define		ARCMSR_CCB_DONE			0x0000
>+	#define		ARCMSR_CCB_START		0x55AA
>+	#define		ARCMSR_CCB_ABORTED		0xAA55
>+	#define		ARCMSR_CCB_ILLEGAL		0xFFFF
>+	uint32_t			reserved2[7];
>+	/* 548-551 552-555 556-559 560-563 564-567 568-571 572-575 */
>+#else
>+	/*  ======================512+32 bytes========================  */
>+	struct list_head		list;
>+	/* 512-519 8 bytes next/prev ptrs for ccb lists */
>+	struct scsi_cmnd *		pcmd;
>+	/* 520-523 4 bytes pointer of linux scsi command */
>+	struct AdapterControlBlock *	acb;
>+	/* 524-527 4 bytes pointer of acb */
>+
>+	uint16_t			ccb_flags;
>+	/* 528-529 */
>+	#define		CCB_FLAG_READ			0x0000
>+	#define		CCB_FLAG_WRITE			0x0001
>+	#define		CCB_FLAG_ERROR			0x0002
>+	#define		CCB_FLAG_FLUSHCACHE		0x0004
>+	#define		CCB_FLAG_MASTER_ABORTED		0x0008
>+	uint16_t			startdone;
>+	/* 530-531 */
>+	#define		ARCMSR_CCB_DONE			0x0000
>+	#define		ARCMSR_CCB_START		0x55AA
>+	#define		ARCMSR_CCB_ABORTED		0xAA55
>+	#define		ARCMSR_CCB_ILLEGAL		0xFFFF
>+	uint32_t			reserved2[3];
>+	/* 532-535 536-539 540-543 */
>+#endif
>+	/*  ==========================================================  */
>+};
>+/*
>+*******************************************************************************
>+**    ARECA SCSI sense data
>+*******************************************************************************
>+*/
>+struct SENSE_DATA
>+{
>+	uint8_t				ErrorCode:7;
>+#define SCSI_SENSE_CURRENT_ERRORS	0x70
>+#define SCSI_SENSE_DEFERRED_ERRORS	0x71
>+	uint8_t				Valid:1;
>+	uint8_t				SegmentNumber;
>+	uint8_t				SenseKey:4;
>+	uint8_t				Reserved:1;
>+	uint8_t				IncorrectLength:1;
>+	uint8_t				EndOfMedia:1;
>+	uint8_t				FileMark:1;
>+	uint8_t				Information[4];
>+	uint8_t				AdditionalSenseLength;
>+	uint8_t				CommandSpecificInformation[4];
>+	uint8_t				AdditionalSenseCode;
>+	uint8_t				AdditionalSenseCodeQualifier;
>+	uint8_t				FieldReplaceableUnitCode;
>+	uint8_t				SenseKeySpecific[3];
>+};
>+/*
>+*******************************************************************************
>+**  Outbound Interrupt Status Register - OISR
>+*******************************************************************************
>+*/
>+#define     ARCMSR_MU_OUTBOUND_INTERRUPT_STATUS_REG                 0x30
>+#define     ARCMSR_MU_OUTBOUND_PCI_INT                              0x10
>+#define     ARCMSR_MU_OUTBOUND_POSTQUEUE_INT                        0x08
>+#define     ARCMSR_MU_OUTBOUND_DOORBELL_INT                         0x04
>+#define     ARCMSR_MU_OUTBOUND_MESSAGE1_INT                         0x02
>+#define     ARCMSR_MU_OUTBOUND_MESSAGE0_INT                         0x01
>+#define     ARCMSR_MU_OUTBOUND_HANDLE_INT                 \
>+                    (ARCMSR_MU_OUTBOUND_MESSAGE0_INT      \
>+                     |ARCMSR_MU_OUTBOUND_MESSAGE1_INT     \
>+                     |ARCMSR_MU_OUTBOUND_DOORBELL_INT     \
>+                     |ARCMSR_MU_OUTBOUND_POSTQUEUE_INT    \
>+                     |ARCMSR_MU_OUTBOUND_PCI_INT)
>+/*
>+*******************************************************************************
>+**  Outbound Interrupt Mask Register - OIMR
>+*******************************************************************************
>+*/
>+#define     ARCMSR_MU_OUTBOUND_INTERRUPT_MASK_REG                   0x34
>+#define     ARCMSR_MU_OUTBOUND_PCI_INTMASKENABLE                    0x10
>+#define     ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE              0x08
>+#define     ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE               0x04
>+#define     ARCMSR_MU_OUTBOUND_MESSAGE1_INTMASKENABLE               0x02
>+#define     ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE               0x01
>+#define     ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE                    0x1F
>+
>+extern void arcmsr_post_Qbuffer(struct AdapterControlBlock *acb);
>+extern struct class_device_attribute *arcmsr_host_attrs[];
>+extern int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *acb);
>+void arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb);
>+
>diff --git a/drivers/scsi/arcmsr/arcmsr_attr.c b/drivers/scsi/arcmsr/arcmsr_attr.c
>new file mode 100644
>index 0000000..12497da
>--- /dev/null
>+++ b/drivers/scsi/arcmsr/arcmsr_attr.c
>@@ -0,0 +1,381 @@
>+/*
>+*******************************************************************************
>+**        O.S   : Linux
>+**   FILE NAME  : arcmsr_attr.c
>+**        BY    : Erich Chen
>+**   Description: attributes exported to sysfs and device host
>+*******************************************************************************
>+** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved
>+**
>+**     Web site: www.areca.com.tw
>+**       E-mail: erich@areca.com.tw
>+**
>+** This program is free software; you can redistribute it and/or modify
>+** it under the terms of the GNU General Public License version 2 as
>+** published by the Free Software Foundation.
>+** This program is distributed in the hope that it will be useful,
>+** but WITHOUT ANY WARRANTY; without even the implied warranty of
>+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>+** GNU General Public License for more details.
>+*******************************************************************************
>+** Redistribution and use in source and binary forms, with or without
>+** modification, are permitted provided that the following conditions
>+** are met:
>+** 1. Redistributions of source code must retain the above copyright
>+**    notice, this list of conditions and the following disclaimer.
>+** 2. Redistributions in binary form must reproduce the above copyright
>+**    notice, this list of conditions and the following disclaimer in the
>+**    documentation and/or other materials provided with the distribution.
>+** 3. The name of the author may not be used to endorse or promote products
>+**    derived from this software without specific prior written permission.
>+**
>+** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
>+** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
>+** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
>+** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
>+** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT
>+** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
>+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
>+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
>+** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
>+** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>+*******************************************************************************
>+** For history of changes, see Documentation/scsi/ChangeLog.arcmsr
>+**     Firmware Specification, see Documentation/scsi/arcmsr_spec.txt
>+*******************************************************************************
>+*/
>+#include <linux/module.h>
>+#include <linux/kernel.h>
>+#include <linux/init.h>
>+#include <linux/errno.h>
>+#include <linux/delay.h>
>+#include <linux/pci.h>
>+
>+#include <scsi/scsi_cmnd.h>
>+#include <scsi/scsi_device.h>
>+#include <scsi/scsi_host.h>
>+#include <scsi/scsi_transport.h>
>+#include "arcmsr.h"
>+
>+struct class_device_attribute *arcmsr_host_attrs[];
>+
>+static ssize_t
>+arcmsr_sysfs_iop_message_read(struct kobject *kobj, char *buf, loff_t off,
>+    size_t count)
>+{
>+	struct class_device *cdev = container_of(kobj,struct class_device,kobj);
>+	struct Scsi_Host *host = class_to_shost(cdev);
>+	struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+	uint8_t *pQbuffer,*ptmpQbuffer;
>+	int32_t allxfer_len = 0;
>+
>+	if (!capable(CAP_SYS_ADMIN))
>+		return -EACCES;
>+
>+	/* do message unit read. */
>+	ptmpQbuffer = (uint8_t *)buf;
>+	while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
>+		&& (allxfer_len < 1031)) {
>+		pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
>+		memcpy(ptmpQbuffer, pQbuffer, 1);
>+		acb->rqbuf_firstindex++;
>+		acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
>+		ptmpQbuffer++;
>+		allxfer_len++;
>+	}
>+	if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
>+		struct QBUFFER __iomem * prbuffer = (struct QBUFFER __iomem *)
>+					&reg->message_rbuffer;
>+		uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
>+		int32_t iop_len;
>+
>+		acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
>+		iop_len = readl(&prbuffer->data_len);
>+		while (iop_len > 0) {
>+			acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
>+			acb->rqbuf_lastindex++;
>+			acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
>+			iop_data++;
>+			iop_len--;
>+		}
>+		writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
>+				&reg->inbound_doorbell);
>+	}
>+	return (allxfer_len);
>+}
>+
>+static ssize_t
>+arcmsr_sysfs_iop_message_write(struct kobject *kobj, char *buf, loff_t off,
>+    size_t count)
>+{
>+	struct class_device *cdev = container_of(kobj,struct class_device,kobj);
>+	struct Scsi_Host *host = class_to_shost(cdev);
>+	struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>+	int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
>+	uint8_t *pQbuffer, *ptmpuserbuffer;
>+
>+	if (!capable(CAP_SYS_ADMIN))
>+		return -EACCES;
>+	if (count > 1032)
>+		return -EINVAL;
>+	/* do message unit write. */
>+	ptmpuserbuffer = (uint8_t *)buf;
>+	user_len = (int32_t)count;
>+	wqbuf_lastindex = acb->wqbuf_lastindex;
>+	wqbuf_firstindex = acb->wqbuf_firstindex;
>+	if (wqbuf_lastindex != wqbuf_firstindex) {
>+		arcmsr_post_Qbuffer(acb);
>+		return 0;	/*need retry*/
>+	} else {
>+		my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
>+				&(ARCMSR_MAX_QBUFFER - 1);
>+		if (my_empty_len >= user_len) {
>+			while (user_len > 0) {
>+				pQbuffer =
>+				&acb->wqbuffer[acb->wqbuf_lastindex];
>+				memcpy(pQbuffer, ptmpuserbuffer, 1);
>+				acb->wqbuf_lastindex++;
>+				acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
>+				ptmpuserbuffer++;
>+				user_len--;
>+			}
>+			if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
>+				acb->acb_flags &=
>+					~ACB_F_MESSAGE_WQBUFFER_CLEARED;
>+				arcmsr_post_Qbuffer(acb);
>+			}
>+			return count;
>+		} else {
>+			return 0;	/*need retry*/
>+		}
>+	}
>+}
>+
>+static ssize_t
>+arcmsr_sysfs_iop_message_clear(struct kobject *kobj, char *buf, loff_t off,
>+    size_t count)
>+{
>+	struct class_device *cdev = container_of(kobj,struct class_device,kobj);
>+	struct Scsi_Host *host = class_to_shost(cdev);
>+	struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+	uint8_t *pQbuffer;
>+
>+	if (!capable(CAP_SYS_ADMIN))
>+		return -EACCES;
>+
>+	if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
>+		acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
>+		writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK
>+				, &reg->inbound_doorbell);
>+	}
>+	acb->acb_flags |=
>+		(ACB_F_MESSAGE_WQBUFFER_CLEARED
>+		| ACB_F_MESSAGE_RQBUFFER_CLEARED
>+		| ACB_F_MESSAGE_WQBUFFER_READED);
>+	acb->rqbuf_firstindex = 0;
>+	acb->rqbuf_lastindex = 0;
>+	acb->wqbuf_firstindex = 0;
>+	acb->wqbuf_lastindex = 0;
>+	pQbuffer = acb->rqbuffer;
>+	memset(pQbuffer, 0, sizeof (struct QBUFFER));
>+	pQbuffer = acb->wqbuffer;
>+	memset(pQbuffer, 0, sizeof (struct QBUFFER));
>+	return 1;
>+}
>+
>+static struct bin_attribute arcmsr_sysfs_message_read_attr = {
>+	.attr = {
>+		.name = "mu_read",
>+		.mode = S_IRUSR ,
>+		.owner = THIS_MODULE,
>+	},
>+	.size = 1032,
>+	.read = arcmsr_sysfs_iop_message_read,
>+};
>+
>+static struct bin_attribute arcmsr_sysfs_message_write_attr = {
>+	.attr = {
>+		.name = "mu_write",
>+		.mode = S_IWUSR,
>+		.owner = THIS_MODULE,
>+	},
>+	.size = 1032,
>+	.write = arcmsr_sysfs_iop_message_write,
>+};
>+
>+static struct bin_attribute arcmsr_sysfs_message_clear_attr = {
>+	.attr = {
>+		.name = "mu_clear",
>+		.mode = S_IWUSR,
>+		.owner = THIS_MODULE,
>+	},
>+	.size = 1,
>+	.write = arcmsr_sysfs_iop_message_clear,
>+};
>+
>+int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *acb)
>+{
>+	struct Scsi_Host *host = acb->host;
>+	int error;
>+
>+	error = sysfs_create_bin_file(&host->shost_classdev.kobj,
>+				&arcmsr_sysfs_message_read_attr);
>+	if (error) {
>+		printk(KERN_ERR "arcmsr: alloc sysfs mu_read failed\n");
>+		goto error_bin_file_message_read;
>+	}
>+	error = sysfs_create_bin_file(&host->shost_classdev.kobj,
>+				&arcmsr_sysfs_message_write_attr);
>+	if (error) {
>+		printk(KERN_ERR "arcmsr: alloc sysfs mu_write failed\n");
>+		goto error_bin_file_message_write;
>+	}
>+	error = sysfs_create_bin_file(&host->shost_classdev.kobj,
>+				&arcmsr_sysfs_message_clear_attr);
>+	if (error) {
>+		printk(KERN_ERR "arcmsr: alloc sysfs mu_clear failed\n");
>+		goto error_bin_file_message_clear;
>+	}
>+	return 0;
>+error_bin_file_message_clear:
>+	sysfs_remove_bin_file(&host->shost_classdev.kobj,
>+				&arcmsr_sysfs_message_write_attr);
>+error_bin_file_message_write:
>+	sysfs_remove_bin_file(&host->shost_classdev.kobj,
>+				&arcmsr_sysfs_message_read_attr);
>+error_bin_file_message_read:
>+	return error;
>+}
>+
>+void
>+arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb) {
>+	struct Scsi_Host *host = acb->host;
>+
>+	sysfs_remove_bin_file(&host->shost_classdev.kobj,
>+				&arcmsr_sysfs_message_clear_attr);
>+	sysfs_remove_bin_file(&host->shost_classdev.kobj,
>+				&arcmsr_sysfs_message_write_attr);
>+	sysfs_remove_bin_file(&host->shost_classdev.kobj,
>+				&arcmsr_sysfs_message_read_attr);
>+}
>+
>+
>+static ssize_t
>+arcmsr_attr_host_driver_version(struct class_device *cdev, char *buf) {
>+	return snprintf(buf, PAGE_SIZE,
>+			"%s\n",
>+			ARCMSR_DRIVER_VERSION);
>+}
>+
>+static ssize_t
>+arcmsr_attr_host_driver_posted_cmd(struct class_device *cdev, char *buf) {
>+	struct Scsi_Host *host = class_to_shost(cdev);
>+	struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>+	return snprintf(buf, PAGE_SIZE,
>+			"%4d\n",
>+			atomic_read(&acb->ccboutstandingcount));
>+}
>+
>+static ssize_t
>+arcmsr_attr_host_driver_reset(struct class_device *cdev, char *buf) {
>+	struct Scsi_Host *host = class_to_shost(cdev);
>+	struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>+	return snprintf(buf, PAGE_SIZE,
>+			"%4d\n",
>+			acb->num_resets);
>+}
>+
>+static ssize_t
>+arcmsr_attr_host_driver_abort(struct class_device *cdev, char *buf) {
>+	struct Scsi_Host *host = class_to_shost(cdev);
>+	struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>+	return snprintf(buf, PAGE_SIZE,
>+			"%4d\n",
>+			acb->num_aborts);
>+}
>+
>+static ssize_t
>+arcmsr_attr_host_fw_model(struct class_device *cdev, char *buf) {
>+    struct Scsi_Host *host = class_to_shost(cdev);
>+	struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>+	return snprintf(buf, PAGE_SIZE,
>+			"%s\n",
>+			acb->firm_model);
>+}
>+
>+static ssize_t
>+arcmsr_attr_host_fw_version(struct class_device *cdev, char *buf) {
>+	struct Scsi_Host *host = class_to_shost(cdev);
>+	struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>+
>+	return snprintf(buf, PAGE_SIZE,
>+			"%s\n",
>+			acb->firm_version);
>+}
>+
>+static ssize_t
>+arcmsr_attr_host_fw_request_len(struct class_device *cdev, char *buf) {
>+	struct Scsi_Host *host = class_to_shost(cdev);
>+	struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>+
>+	return snprintf(buf, PAGE_SIZE,
>+			"%4d\n",
>+			acb->firm_request_len);
>+}
>+
>+static ssize_t
>+arcmsr_attr_host_fw_numbers_queue(struct class_device *cdev, char *buf) {
>+	struct Scsi_Host *host = class_to_shost(cdev);
>+	struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>+
>+	return snprintf(buf, PAGE_SIZE,
>+			"%4d\n",
>+			acb->firm_numbers_queue);
>+}
>+
>+static ssize_t
>+arcmsr_attr_host_fw_sdram_size(struct class_device *cdev, char *buf) {
>+	struct Scsi_Host *host = class_to_shost(cdev);
>+	struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>+
>+	return snprintf(buf, PAGE_SIZE,
>+			"%4d\n",
>+			acb->firm_sdram_size);
>+}
>+
>+static ssize_t
>+arcmsr_attr_host_fw_hd_channels(struct class_device *cdev, char *buf) {
>+	struct Scsi_Host *host = class_to_shost(cdev);
>+	struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>+
>+	return snprintf(buf, PAGE_SIZE,
>+			"%4d\n",
>+			acb->firm_hd_channels);
>+}
>+
>+static CLASS_DEVICE_ATTR(host_driver_version, S_IRUGO, arcmsr_attr_host_driver_version, NULL);
>+static CLASS_DEVICE_ATTR(host_driver_posted_cmd, S_IRUGO, arcmsr_attr_host_driver_posted_cmd, NULL);
>+static CLASS_DEVICE_ATTR(host_driver_reset, S_IRUGO, arcmsr_attr_host_driver_reset, NULL);
>+static CLASS_DEVICE_ATTR(host_driver_abort, S_IRUGO, arcmsr_attr_host_driver_abort, NULL);
>+static CLASS_DEVICE_ATTR(host_fw_model, S_IRUGO, arcmsr_attr_host_fw_model, NULL);
>+static CLASS_DEVICE_ATTR(host_fw_version, S_IRUGO, arcmsr_attr_host_fw_version, NULL);
>+static CLASS_DEVICE_ATTR(host_fw_request_len, S_IRUGO, arcmsr_attr_host_fw_request_len, NULL);
>+static CLASS_DEVICE_ATTR(host_fw_numbers_queue, S_IRUGO, arcmsr_attr_host_fw_numbers_queue, NULL);
>+static CLASS_DEVICE_ATTR(host_fw_sdram_size, S_IRUGO, arcmsr_attr_host_fw_sdram_size, NULL);
>+static CLASS_DEVICE_ATTR(host_fw_hd_channels, S_IRUGO, arcmsr_attr_host_fw_hd_channels, NULL);
>+
>+struct class_device_attribute *arcmsr_host_attrs[] = {
>+	&class_device_attr_host_driver_version,
>+	&class_device_attr_host_driver_posted_cmd,
>+	&class_device_attr_host_driver_reset,
>+	&class_device_attr_host_driver_abort,
>+	&class_device_attr_host_fw_model,
>+	&class_device_attr_host_fw_version,
>+	&class_device_attr_host_fw_request_len,
>+	&class_device_attr_host_fw_numbers_queue,
>+	&class_device_attr_host_fw_sdram_size,
>+	&class_device_attr_host_fw_hd_channels,
>+	NULL,
>+};
>diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
>new file mode 100644
>index 0000000..475f978
>--- /dev/null
>+++ b/drivers/scsi/arcmsr/arcmsr_hba.c
>@@ -0,0 +1,1496 @@
>+/*
>+*******************************************************************************
>+**        O.S   : Linux
>+**   FILE NAME  : arcmsr_hba.c
>+**        BY    : Erich Chen
>+**   Description: SCSI RAID Device Driver for
>+**                ARECA RAID Host adapter
>+*******************************************************************************
>+** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved
>+**
>+**     Web site: www.areca.com.tw
>+**       E-mail: erich@areca.com.tw
>+**
>+** This program is free software; you can redistribute it and/or modify
>+** it under the terms of the GNU General Public License version 2 as
>+** published by the Free Software Foundation.
>+** This program is distributed in the hope that it will be useful,
>+** but WITHOUT ANY WARRANTY; without even the implied warranty of
>+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>+** GNU General Public License for more details.
>+*******************************************************************************
>+** Redistribution and use in source and binary forms, with or without
>+** modification, are permitted provided that the following conditions
>+** are met:
>+** 1. Redistributions of source code must retain the above copyright
>+**    notice, this list of conditions and the following disclaimer.
>+** 2. Redistributions in binary form must reproduce the above copyright
>+**    notice, this list of conditions and the following disclaimer in the
>+**    documentation and/or other materials provided with the distribution.
>+** 3. The name of the author may not be used to endorse or promote products
>+**    derived from this software without specific prior written permission.
>+**
>+** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
>+** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
>+** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
>+** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
>+** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT
>+** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
>+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
>+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
>+** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
>+** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>+*******************************************************************************
>+** For history of changes, see Documentation/scsi/ChangeLog.arcmsr
>+**     Firmware Specification, see Documentation/scsi/arcmsr_spec.txt
>+*******************************************************************************
>+*/
>+#include <linux/module.h>
>+#include <linux/reboot.h>
>+#include <linux/spinlock.h>
>+#include <linux/pci_ids.h>
>+#include <linux/interrupt.h>
>+#include <linux/moduleparam.h>
>+#include <linux/errno.h>
>+#include <linux/types.h>
>+#include <linux/delay.h>
>+#include <linux/dma-mapping.h>
>+#include <linux/timer.h>
>+#include <linux/pci.h>
>+#include <asm/dma.h>
>+#include <asm/io.h>
>+#include <asm/system.h>
>+#include <asm/uaccess.h>
>+#include <scsi/scsi_host.h>
>+#include <scsi/scsi.h>
>+#include <scsi/scsi_cmnd.h>
>+#include <scsi/scsi_tcq.h>
>+#include <scsi/scsi_device.h>
>+#include <scsi/scsi_transport.h>
>+#include <scsi/scsicam.h>
>+#include "arcmsr.h"
>+
>+MODULE_AUTHOR("Erich Chen <erich@areca.com.tw>");
>+MODULE_DESCRIPTION("ARECA (ARC11xx/12xx) SATA RAID HOST Adapter");
>+MODULE_LICENSE("Dual BSD/GPL");
>+MODULE_VERSION(ARCMSR_DRIVER_VERSION);
>+
>+static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd);
>+static int arcmsr_abort(struct scsi_cmnd *);
>+static int arcmsr_bus_reset(struct scsi_cmnd *);
>+static int arcmsr_bios_param(struct scsi_device *sdev,
>+				struct block_device *bdev, sector_t capacity, int *info);
>+static int arcmsr_queue_command(struct scsi_cmnd * cmd,
>+				void (*done) (struct scsi_cmnd *));
>+static int arcmsr_probe(struct pci_dev *pdev,
>+				const struct pci_device_id *id);
>+static void arcmsr_remove(struct pci_dev *pdev);
>+static void arcmsr_shutdown(struct pci_dev *pdev);
>+static void arcmsr_iop_init(struct AdapterControlBlock *acb);
>+static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
>+static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
>+static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb);
>+static uint8_t arcmsr_wait_msgint_ready(struct AdapterControlBlock *acb);
>+static const char *arcmsr_info(struct Scsi_Host *);
>+static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
>+
>+static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev, int queue_depth)
>+{
>+	if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
>+		queue_depth = ARCMSR_MAX_CMD_PERLUN;
>+	scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
>+	return queue_depth;
>+}
>+
>+static struct scsi_host_template arcmsr_scsi_host_template = {
>+	.module			= THIS_MODULE,
>+	.name			= "ARCMSR ARECA SATA RAID HOST Adapter" ARCMSR_DRIVER_VERSION,
>+	.info			= arcmsr_info,
>+	.queuecommand		= arcmsr_queue_command,
>+	.eh_abort_handler	= arcmsr_abort,
>+	.eh_bus_reset_handler	= arcmsr_bus_reset,
>+	.bios_param		= arcmsr_bios_param,
>+	.change_queue_depth	= arcmsr_adjust_disk_queue_depth,
>+	.can_queue		= ARCMSR_MAX_OUTSTANDING_CMD,
>+	.this_id		= ARCMSR_SCSI_INITIATOR_ID,
>+	.sg_tablesize		= ARCMSR_MAX_SG_ENTRIES,
>+	.max_sectors    	= ARCMSR_MAX_XFER_SECTORS,
>+	.cmd_per_lun		= ARCMSR_MAX_CMD_PERLUN,
>+	.use_clustering		= ENABLE_CLUSTERING,
>+	.shost_attrs		= arcmsr_host_attrs,
>+};
>+
>+static struct pci_device_id arcmsr_device_id_table[] = {
>+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
>+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
>+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
>+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
>+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
>+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
>+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
>+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
>+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)},
>+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)},
>+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)},
>+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)},
>+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)},
>+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)},
>+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)},
>+	{0, 0}, /* Terminating entry */
>+};
>+MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
>+static struct pci_driver arcmsr_pci_driver = {
>+	.name			= "arcmsr",
>+	.id_table		= arcmsr_device_id_table,
>+	.probe			= arcmsr_probe,
>+	.remove			= arcmsr_remove,
>+	.shutdown		= arcmsr_shutdown
>+};
>+
>+static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id,
>+	struct pt_regs *regs)
>+{
>+	irqreturn_t handle_state;
>+	struct AdapterControlBlock *acb;
>+	unsigned long flags;
>+
>+	acb = (struct AdapterControlBlock *)dev_id;
>+
>+	spin_lock_irqsave(acb->host->host_lock, flags);
>+	handle_state = arcmsr_interrupt(acb);
>+	spin_unlock_irqrestore(acb->host->host_lock, flags);
>+	return handle_state;
>+}
>+
>+static int arcmsr_bios_param(struct scsi_device *sdev,
>+		struct block_device *bdev, sector_t capacity, int *geom)
>+{
>+	int ret, heads, sectors, cylinders, total_capacity;
>+	unsigned char *buffer;/* return copy of block device's partition table */
>+
>+	buffer = scsi_bios_ptable(bdev);
>+	if (buffer) {
>+		ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
>+		kfree(buffer);
>+		if (ret != -1)
>+			return ret;
>+	}
>+	total_capacity = capacity;
>+	heads = 64;
>+	sectors = 32;
>+	cylinders = total_capacity / (heads * sectors);
>+	if (cylinders > 1024) {
>+		heads = 255;
>+		sectors = 63;
>+		cylinders = total_capacity / (heads * sectors);
>+	}
>+	geom[0] = heads;
>+	geom[1] = sectors;
>+	geom[2] = cylinders;
>+	return 0;
>+}
>+
>+static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
>+{
>+	struct pci_dev *pdev = acb->pdev;
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+	u32 ccb_phyaddr_hi32;
>+	void *dma_coherent;
>+	dma_addr_t dma_coherent_handle, dma_addr;
>+	struct CommandControlBlock *ccb_tmp;
>+	int i, j;
>+
>+	dma_coherent = dma_alloc_coherent(&pdev->dev,
>+			ARCMSR_MAX_FREECCB_NUM *
>+			sizeof (struct CommandControlBlock) + 0x20,
>+			&dma_coherent_handle, GFP_KERNEL);
>+	if (!dma_coherent)
>+		return -ENOMEM;
>+
>+	acb->dma_coherent = dma_coherent;
>+	acb->dma_coherent_handle = dma_coherent_handle;
>+
>+	if (((unsigned long)dma_coherent & 0x1F)) {
>+		dma_coherent = dma_coherent +
>+			(0x20 - ((unsigned long)dma_coherent & 0x1F));
>+		dma_coherent_handle = dma_coherent_handle +
>+			(0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
>+	}
>+
>+	dma_addr = dma_coherent_handle;
>+	ccb_tmp = (struct CommandControlBlock *)dma_coherent;
>+	for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
>+		ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5;
>+		ccb_tmp->acb = acb;
>+		acb->pccb_pool[i] = ccb_tmp;
>+		list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
>+		dma_addr = dma_addr + sizeof (struct CommandControlBlock);
>+		ccb_tmp++;
>+	}
>+
>+	acb->vir2phy_offset = (unsigned long)ccb_tmp -
>+			      (unsigned long)dma_addr;
>+	for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
>+		for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
>+			acb->devstate[i][j] = ARECA_RAID_GOOD;
>+
>+	/*
>+	** here we need to tell iop 331 our ccb_tmp.HighPart
>+	** if ccb_tmp.HighPart is not zero
>+	*/
>+	ccb_phyaddr_hi32 = (uint32_t) ((dma_coherent_handle >> 16) >> 16);
>+	if (ccb_phyaddr_hi32 != 0) {
>+		writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->message_rwbuffer[0]);
>+		writel(ccb_phyaddr_hi32, &reg->message_rwbuffer[1]);
>+		writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
>+		if (arcmsr_wait_msgint_ready(acb))
>+			printk(KERN_NOTICE "arcmsr%d: "
>+			       "'set ccb high part physical address' timeout\n",
>+				acb->host->host_no);
>+	}
>+
>+	writel(readl(&reg->outbound_intmask) |
>+			ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
>+	       &reg->outbound_intmask);
>+	return 0;
>+}
>+
>+static int arcmsr_probe(struct pci_dev *pdev,
>+	const struct pci_device_id *id)
>+{
>+	struct Scsi_Host *host;
>+	struct AdapterControlBlock *acb;
>+	uint8_t bus, dev_fun;
>+	int error;
>+
>+	error = pci_enable_device(pdev);
>+	if (error)
>+		goto out;
>+	pci_set_master(pdev);
>+
>+	host = scsi_host_alloc(&arcmsr_scsi_host_template,
>+			sizeof(struct AdapterControlBlock));
>+	if (!host) {
>+		error = -ENOMEM;
>+		goto out_disable_device;
>+	}
>+	acb = (struct AdapterControlBlock *)host->hostdata;
>+	memset(acb, 0, sizeof (struct AdapterControlBlock));
>+
>+	error = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
>+	if (error) {
>+		error = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
>+		if (error) {
>+			printk(KERN_WARNING
>+			       "scsi%d: No suitable DMA mask available\n",
>+			       host->host_no);
>+			goto out_host_put;
>+		}
>+	}
>+	bus = pdev->bus->number;
>+	dev_fun = pdev->devfn;
>+	acb->host = host;
>+	acb->pdev = pdev;
>+	host->max_sectors = ARCMSR_MAX_XFER_SECTORS;
>+	host->max_lun = ARCMSR_MAX_TARGETLUN;
>+	host->max_id = ARCMSR_MAX_TARGETID;/*16:8*/
>+	host->max_cmd_len = 16;    /*this is issue of 64bit LBA, over 2T byte*/
>+	host->sg_tablesize = ARCMSR_MAX_SG_ENTRIES;
>+	host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */
>+	host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
>+	host->this_id = ARCMSR_SCSI_INITIATOR_ID;
>+	host->unique_id = (bus << 8) | dev_fun;
>+	host->irq = pdev->irq;
>+	error = pci_request_regions(pdev, "arcmsr");
>+	if (error)
>+		goto out_host_put;
>+
>+	acb->pmu = ioremap(pci_resource_start(pdev, 0),
>+			   pci_resource_len(pdev, 0));
>+	if (!acb->pmu) {
>+		printk(KERN_NOTICE "arcmsr%d: memory"
>+			" mapping region fail \n", acb->host->host_no);
>+		goto out_release_regions;
>+	}
>+	acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
>+			   ACB_F_MESSAGE_RQBUFFER_CLEARED |
>+			   ACB_F_MESSAGE_WQBUFFER_READED);
>+	acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
>+	INIT_LIST_HEAD(&acb->ccb_free_list);
>+
>+	error = arcmsr_alloc_ccb_pool(acb);
>+	if (error)
>+		goto out_iounmap;
>+
>+	error = request_irq(pdev->irq, arcmsr_do_interrupt,
>+			SA_INTERRUPT | SA_SHIRQ, "arcmsr", acb);
>+	if (error)
>+		goto out_free_ccb_pool;
>+
>+	arcmsr_iop_init(acb);
>+	pci_set_drvdata(pdev, host);
>+
>+	error = scsi_add_host(host, &pdev->dev);
>+	if (error)
>+		goto out_free_irq;
>+
>+	error = arcmsr_alloc_sysfs_attr(acb);
>+	if (error)
>+		goto out_free_sysfs;
>+
>+	scsi_scan_host(host);
>+	return 0;
>+ out_free_sysfs:
>+ out_free_irq:
>+	free_irq(pdev->irq, acb);
>+ out_free_ccb_pool:
>+	arcmsr_free_ccb_pool(acb);
>+ out_iounmap:
>+	iounmap(acb->pmu);
>+ out_release_regions:
>+	pci_release_regions(pdev);
>+ out_host_put:
>+	scsi_host_put(host);
>+ out_disable_device:
>+	pci_disable_device(pdev);
>+ out:
>+	return error;
>+}
>+
>+static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
>+{
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+
>+	writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
>+	if (arcmsr_wait_msgint_ready(acb))
>+		printk(KERN_NOTICE
>+			"arcmsr%d: wait 'abort all outstanding command' timeout \n"
>+			, acb->host->host_no);
>+}
>+
>+static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
>+{
>+	struct AdapterControlBlock *acb = ccb->acb;
>+	struct scsi_cmnd *pcmd = ccb->pcmd;
>+
>+	if (pcmd->use_sg != 0) {
>+		struct scatterlist *sl;
>+
>+		sl = (struct scatterlist *)pcmd->request_buffer;
>+		pci_unmap_sg(acb->pdev, sl, pcmd->use_sg, pcmd->sc_data_direction);
>+	}
>+	else if (pcmd->request_bufflen != 0)
>+		pci_unmap_single(acb->pdev,
>+			pcmd->SCp.dma_handle,
>+			pcmd->request_bufflen, pcmd->sc_data_direction);
>+}
>+
>+static void arcmsr_ccb_complete(struct CommandControlBlock *ccb, int stand_flag)
>+{
>+	struct AdapterControlBlock *acb = ccb->acb;
>+	struct scsi_cmnd *pcmd = ccb->pcmd;
>+
>+	arcmsr_pci_unmap_dma(ccb);
>+	if (stand_flag == 1)
>+		atomic_dec(&acb->ccboutstandingcount);
>+	ccb->startdone = ARCMSR_CCB_DONE;
>+	ccb->ccb_flags = 0;
>+	list_add_tail(&ccb->list, &acb->ccb_free_list);
>+	pcmd->scsi_done(pcmd);
>+}
>+
>+static void arcmsr_remove(struct pci_dev *pdev)
>+{
>+	struct Scsi_Host *host = pci_get_drvdata(pdev);
>+	struct AdapterControlBlock *acb =
>+		(struct AdapterControlBlock *) host->hostdata;
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+	int poll_count = 0;
>+
>+	arcmsr_free_sysfs_attr(acb);
>+	scsi_remove_host(host);
>+	arcmsr_stop_adapter_bgrb(acb);
>+	arcmsr_flush_adapter_cache(acb);
>+	writel(readl(&reg->outbound_intmask) |
>+		ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
>+		&reg->outbound_intmask);
>+	acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
>+	acb->acb_flags &= ~ACB_F_IOP_INITED;
>+
>+	for (poll_count = 0; poll_count < 256; poll_count++) {
>+		if (!atomic_read(&acb->ccboutstandingcount))
>+			break;
>+		arcmsr_interrupt(acb);
>+		msleep(25);
>+	}
>+
>+	if (atomic_read(&acb->ccboutstandingcount)) {
>+		int i;
>+
>+		arcmsr_abort_allcmd(acb);
>+		for (i = 0; i < ARCMSR_MAX_OUTSTANDING_CMD; i++)
>+			readl(&reg->outbound_queueport);
>+		for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
>+			struct CommandControlBlock *ccb = acb->pccb_pool[i];
>+			if (ccb->startdone == ARCMSR_CCB_START) {
>+				ccb->startdone = ARCMSR_CCB_ABORTED;
>+				ccb->pcmd->result = DID_ABORT << 16;
>+				arcmsr_ccb_complete(ccb, 1);
>+			}
>+		}
>+	}
>+
>+	free_irq(pdev->irq, acb);
>+	iounmap(acb->pmu);
>+	arcmsr_free_ccb_pool(acb);
>+	pci_release_regions(pdev);
>+
>+	scsi_host_put(host);
>+
>+	pci_disable_device(pdev);
>+	pci_set_drvdata(pdev, NULL);
>+}
>+
>+static void arcmsr_shutdown(struct pci_dev *pdev)
>+{
>+	struct Scsi_Host *host = pci_get_drvdata(pdev);
>+	struct AdapterControlBlock *acb =
>+		(struct AdapterControlBlock *)host->hostdata;
>+
>+	arcmsr_stop_adapter_bgrb(acb);
>+	arcmsr_flush_adapter_cache(acb);
>+}
>+
>+static int arcmsr_module_init(void)
>+{
>+	int error = 0;
>+
>+	error = pci_register_driver(&arcmsr_pci_driver);
>+	return error;
>+}
>+
>+static void arcmsr_module_exit(void)
>+{
>+	pci_unregister_driver(&arcmsr_pci_driver);
>+}
>+module_init(arcmsr_module_init);
>+module_exit(arcmsr_module_exit);
>+
>+static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
>+{
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+	u32 orig_mask = readl(&reg->outbound_intmask);
>+
>+	writel(orig_mask | ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
>+			&reg->outbound_intmask);
>+	return orig_mask;
>+}
>+
>+static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
>+		u32 orig_mask)
>+{
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+	u32 mask;
>+
>+	mask = orig_mask & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
>+			     ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
>+	writel(mask, &reg->outbound_intmask);
>+}
>+
>+static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
>+{
>+	struct MessageUnit __iomem *reg=acb->pmu;
>+
>+	writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
>+	if (arcmsr_wait_msgint_ready(acb))
>+		printk(KERN_NOTICE
>+			"arcmsr%d: wait 'flush adapter cache' timeout \n"
>+			, acb->host->host_no);
>+}
>+
>+static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
>+{
>+	struct scsi_cmnd *pcmd = ccb->pcmd;
>+	struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
>+
>+	pcmd->result = DID_OK << 16;
>+	if (sensebuffer) {
>+		int sense_data_length =
>+			sizeof (struct SENSE_DATA) < sizeof (pcmd->sense_buffer)
>+			? sizeof (struct SENSE_DATA) : sizeof (pcmd->sense_buffer);
>+		memset(sensebuffer, 0, sizeof (pcmd->sense_buffer));
>+		memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
>+		sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
>+		sensebuffer->Valid = 1;
>+	}
>+}
>+
>+static uint8_t arcmsr_wait_msgint_ready(struct AdapterControlBlock *acb)
>+{
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+	uint32_t Index;
>+	uint8_t Retries = 0x00;
>+
>+	do {
>+		for (Index = 0; Index < 100; Index++) {
>+			if (readl(&reg->outbound_intstatus)
>+				& ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
>+				writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT
>+					, &reg->outbound_intstatus);
>+				return 0x00;
>+			}
>+			msleep_interruptible(10);
>+		}/*max 1 seconds*/
>+	} while (Retries++ < 20);/*max 20 sec*/
>+	return 0xff;
>+}
>+
>+static void arcmsr_build_ccb(struct AdapterControlBlock *acb,
>+	struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
>+{
>+	struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
>+	int8_t *psge = (int8_t *)&arcmsr_cdb->u;
>+	uint32_t address_lo, address_hi;
>+	int arccdbsize = 0x30;
>+
>+	ccb->pcmd = pcmd;
>+	memset(arcmsr_cdb, 0, sizeof (struct ARCMSR_CDB));
>+	arcmsr_cdb->Bus = 0;
>+	arcmsr_cdb->TargetID = pcmd->device->id;
>+	arcmsr_cdb->LUN = pcmd->device->lun;
>+	arcmsr_cdb->Function = 1;
>+	arcmsr_cdb->CdbLength = (uint8_t)pcmd->cmd_len;
>+	arcmsr_cdb->Context = (unsigned long)arcmsr_cdb;
>+	memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
>+	if (pcmd->use_sg) {
>+		int length, sgcount, i, cdb_sgcount = 0;
>+		struct scatterlist *sl;
>+
>+		/* Get Scatter Gather List from scsiport. */
>+		sl = (struct scatterlist *) pcmd->request_buffer;
>+		sgcount = pci_map_sg(acb->pdev, sl, pcmd->use_sg,
>+				pcmd->sc_data_direction);
>+		/* map stor port SG list to our iop SG List. */
>+		for (i = 0; i < sgcount; i++) {
>+			/* Get the physical address of the current data pointer */
>+			length = cpu_to_le32(sg_dma_len(sl));
>+			address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sl)));
>+			address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sl)));
>+			if (address_hi == 0) {
>+				struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
>+
>+				pdma_sg->address = address_lo;
>+				pdma_sg->length = length;
>+				psge += sizeof (struct SG32ENTRY);
>+				arccdbsize += sizeof (struct SG32ENTRY);
>+			} else {
>+				struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
>+
>+				pdma_sg->addresshigh = address_hi;
>+				pdma_sg->address = address_lo;
>+				pdma_sg->length = length|IS_SG64_ADDR;
>+				psge += sizeof (struct SG64ENTRY);
>+				arccdbsize += sizeof (struct SG64ENTRY);
>+			}
>+			sl++;
>+			cdb_sgcount++;
>+		}
>+		arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount;
>+		arcmsr_cdb->DataLength = pcmd->request_bufflen;
>+		if ( arccdbsize > 256)
>+			arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
>+	} else if (pcmd->request_bufflen) {
>+		dma_addr_t dma_addr;
>+		dma_addr = pci_map_single(acb->pdev, pcmd->request_buffer,
>+				pcmd->request_bufflen, pcmd->sc_data_direction);
>+		pcmd->SCp.dma_handle = dma_addr;
>+		address_lo = cpu_to_le32(dma_addr_lo32(dma_addr));
>+		address_hi = cpu_to_le32(dma_addr_hi32(dma_addr));
>+		if (address_hi == 0) {
>+			struct  SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
>+			pdma_sg->address = address_lo;
>+			pdma_sg->length = pcmd->request_bufflen;
>+		} else {
>+			struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
>+			pdma_sg->addresshigh = address_hi;
>+			pdma_sg->address = address_lo;
>+			pdma_sg->length = pcmd->request_bufflen|IS_SG64_ADDR;
>+		}
>+		arcmsr_cdb->sgcount = 1;
>+		arcmsr_cdb->DataLength = pcmd->request_bufflen;
>+	}
>+	if (pcmd->sc_data_direction == DMA_TO_DEVICE ) {
>+		arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
>+		ccb->ccb_flags |= CCB_FLAG_WRITE;
>+	}
>+}
>+
>+static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
>+{
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+	uint32_t cdb_shifted_phyaddr = ccb->cdb_shifted_phyaddr;
>+	struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
>+
>+	atomic_inc(&acb->ccboutstandingcount);
>+	ccb->startdone = ARCMSR_CCB_START;
>+	if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
>+		writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
>+			&reg->inbound_queueport);
>+	else
>+		writel(cdb_shifted_phyaddr, &reg->inbound_queueport);
>+}
>+
>+void arcmsr_post_Qbuffer(struct AdapterControlBlock *acb)
>+{
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+	struct QBUFFER __iomem *pwbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
>+	uint8_t __iomem *iop_data = (uint8_t __iomem *) pwbuffer->data;
>+	int32_t allxfer_len = 0;
>+
>+	if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
>+		acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
>+		while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
>+			&& (allxfer_len < 124)) {
>+			writeb(acb->wqbuffer[acb->wqbuf_firstindex], iop_data);
>+			acb->wqbuf_firstindex++;
>+			acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
>+			iop_data++;
>+			allxfer_len++;
>+		}
>+		writel(allxfer_len, &pwbuffer->data_len);
>+		writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK
>+			, &reg->inbound_doorbell);
>+	}
>+}
>+
>+static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
>+{
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+
>+	acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
>+	writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
>+	if (arcmsr_wait_msgint_ready(acb))
>+		printk(KERN_NOTICE
>+			"arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
>+			, acb->host->host_no);
>+}
>+
>+static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
>+{
>+	dma_free_coherent(&acb->pdev->dev,
>+		ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20,
>+		acb->dma_coherent,
>+		acb->dma_coherent_handle);
>+}
>+
>+static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
>+{
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+	struct CommandControlBlock *ccb;
>+	uint32_t flag_ccb, outbound_intstatus, outbound_doorbell;
>+
>+	outbound_intstatus = readl(&reg->outbound_intstatus)
>+		& acb->outbound_int_enable;
>+	writel(outbound_intstatus, &reg->outbound_intstatus);
>+	if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) {
>+		outbound_doorbell = readl(&reg->outbound_doorbell);
>+		writel(outbound_doorbell, &reg->outbound_doorbell);
>+		if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
>+			struct QBUFFER __iomem * prbuffer =
>+				(struct QBUFFER __iomem *) &reg->message_rbuffer;
>+			uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
>+			int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
>+
>+			rqbuf_lastindex = acb->rqbuf_lastindex;
>+			rqbuf_firstindex = acb->rqbuf_firstindex;
>+			iop_len = readl(&prbuffer->data_len);
>+			my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1)
>+					&(ARCMSR_MAX_QBUFFER - 1);
>+			if (my_empty_len >= iop_len) {
>+				while (iop_len > 0) {
>+					acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
>+					acb->rqbuf_lastindex++;
>+					acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
>+					iop_data++;
>+					iop_len--;
>+				}
>+				writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
>+					&reg->inbound_doorbell);
>+			} else
>+				acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
>+		}
>+		if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
>+			acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
>+			if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
>+				struct QBUFFER __iomem * pwbuffer =
>+						(struct QBUFFER __iomem *) &reg->message_wbuffer;
>+				uint8_t __iomem * iop_data = (uint8_t __iomem *) pwbuffer->data;
>+				int32_t allxfer_len = 0;
>+
>+				acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
>+				while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
>+					&& (allxfer_len < 124)) {
>+					writeb(acb->wqbuffer[acb->wqbuf_firstindex], iop_data);
>+					acb->wqbuf_firstindex++;
>+					acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
>+					iop_data++;
>+					allxfer_len++;
>+				}
>+				writel(allxfer_len, &pwbuffer->data_len);
>+				writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK,
>+					&reg->inbound_doorbell);
>+			}
>+			if (acb->wqbuf_firstindex == acb->wqbuf_lastindex)
>+				acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
>+		}
>+	}
>+	if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
>+		int id, lun;
>+		/*
>+		****************************************************************
>+		**               areca cdb command done
>+		****************************************************************
>+		*/
>+		while (1) {
>+			if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF)
>+				break;/*chip FIFO no ccb for completion already*/
>+			/* check if command done with no error*/
>+			ccb = (struct CommandControlBlock *)(acb->vir2phy_offset +
>+				(flag_ccb << 5));
>+			if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
>+				if (ccb->startdone == ARCMSR_CCB_ABORTED) {
>+					struct scsi_cmnd *abortcmd=ccb->pcmd;
>+					if (abortcmd) {
>+					abortcmd->result |= DID_ABORT >> 16;
>+					arcmsr_ccb_complete(ccb, 1);
>+					printk(KERN_NOTICE
>+						"arcmsr%d: ccb='0x%p' isr got aborted command \n"
>+						, acb->host->host_no, ccb);
>+					}
>+					continue;
>+				}
>+				printk(KERN_NOTICE
>+					"arcmsr%d: isr get an illegal ccb command done acb='0x%p'"
>+					"ccb='0x%p' ccbacb='0x%p' startdone = 0x%x"
>+					" ccboutstandingcount=%d \n"
>+					, acb->host->host_no
>+					, acb
>+					, ccb
>+					, ccb->acb
>+					, ccb->startdone
>+					, atomic_read(&acb->ccboutstandingcount));
>+				continue;
>+			}
>+			id = ccb->pcmd->device->id;
>+			lun = ccb->pcmd->device->lun;
>+			if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) {
>+				if (acb->devstate[id][lun] == ARECA_RAID_GONE)
>+					acb->devstate[id][lun] = ARECA_RAID_GOOD;
>+				ccb->pcmd->result = DID_OK << 16;
>+				arcmsr_ccb_complete(ccb, 1);
>+			} else {
>+				switch(ccb->arcmsr_cdb.DeviceStatus) {
>+				case ARCMSR_DEV_SELECT_TIMEOUT: {
>+						acb->devstate[id][lun] = ARECA_RAID_GONE;
>+						ccb->pcmd->result = DID_TIME_OUT << 16;
>+						arcmsr_ccb_complete(ccb, 1);
>+					}
>+					break;
>+				case ARCMSR_DEV_ABORTED:
>+				case ARCMSR_DEV_INIT_FAIL: {
>+						acb->devstate[id][lun] = ARECA_RAID_GONE;
>+						ccb->pcmd->result = DID_BAD_TARGET << 16;
>+						arcmsr_ccb_complete(ccb, 1);
>+					}
>+					break;
>+				case ARCMSR_DEV_CHECK_CONDITION: {
>+						acb->devstate[id][lun] = ARECA_RAID_GOOD;
>+						arcmsr_report_sense_info(ccb);
>+						arcmsr_ccb_complete(ccb, 1);
>+					}
>+					break;
>+				default:
>+					printk(KERN_NOTICE
>+						"arcmsr%d: scsi id=%d lun=%d"
>+						" isr get command error done,"
>+						"but got unknown DeviceStatus = 0x%x \n"
>+						, acb->host->host_no
>+						, id
>+						, lun
>+						, ccb->arcmsr_cdb.DeviceStatus);
>+						acb->devstate[id][lun] = ARECA_RAID_GONE;
>+						ccb->pcmd->result = DID_NO_CONNECT << 16;
>+						arcmsr_ccb_complete(ccb, 1);
>+					break;
>+				}
>+			}
>+		}/*drain reply FIFO*/
>+	}
>+	if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))
>+		return IRQ_NONE;
>+	return IRQ_HANDLED;
>+}
>+
>+static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
>+{
>+	if (acb) {
>+		/* stop adapter background rebuild */
>+		if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
>+			acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
>+			arcmsr_stop_adapter_bgrb(acb);
>+			arcmsr_flush_adapter_cache(acb);
>+		}
>+	}
>+}
>+
>+static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd)
>+{
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+	struct CMD_MESSAGE_FIELD *pcmdmessagefld;
>+	int retvalue = 0, transfer_len = 0;
>+	char *buffer;
>+	uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
>+						(uint32_t ) cmd->cmnd[6] << 16 |
>+						(uint32_t ) cmd->cmnd[7] << 8  |
>+						(uint32_t ) cmd->cmnd[8];
>+					/* 4 bytes: Areca io control code */
>+	if (cmd->use_sg) {
>+		struct scatterlist *sg = (struct scatterlist *)cmd->request_buffer;
>+
>+		buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
>+		if (cmd->use_sg > 1) {
>+			retvalue = ARCMSR_MESSAGE_FAIL;
>+			goto message_out;
>+		}
>+		transfer_len += sg->length;
>+	} else {
>+		buffer = cmd->request_buffer;
>+		transfer_len = cmd->request_bufflen;
>+	}
>+	if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
>+		retvalue = ARCMSR_MESSAGE_FAIL;
>+		goto message_out;
>+	}
>+	pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
>+	switch(controlcode) {
>+	case ARCMSR_MESSAGE_READ_RQBUFFER: {
>+			unsigned long *ver_addr;
>+			dma_addr_t buf_handle;
>+			uint8_t *pQbuffer, *ptmpQbuffer;
>+			int32_t allxfer_len = 0;
>+
>+			ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
>+			if (!ver_addr) {
>+				retvalue = ARCMSR_MESSAGE_FAIL;
>+				goto message_out;
>+			}
>+			ptmpQbuffer = (uint8_t *) ver_addr;
>+			while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
>+				&& (allxfer_len < 1031)) {
>+				pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
>+				memcpy(ptmpQbuffer, pQbuffer, 1);
>+				acb->rqbuf_firstindex++;
>+				acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
>+				ptmpQbuffer++;
>+				allxfer_len++;
>+			}
>+			if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
>+				struct QBUFFER __iomem * prbuffer = (struct QBUFFER __iomem *)
>+							&reg->message_rbuffer;
>+				uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
>+				int32_t iop_len;
>+
>+				acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
>+				iop_len = readl(&prbuffer->data_len);
>+				while (iop_len > 0) {
>+					acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
>+					acb->rqbuf_lastindex++;
>+					acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
>+					iop_data++;
>+					iop_len--;
>+				}
>+				writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
>+						&reg->inbound_doorbell);
>+			}
>+			memcpy(pcmdmessagefld->messagedatabuffer,
>+				(uint8_t *)ver_addr, allxfer_len);
>+			pcmdmessagefld->cmdmessage.Length = allxfer_len;
>+			pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
>+			pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
>+		}
>+		break;
>+	case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
>+			unsigned long *ver_addr;
>+			dma_addr_t buf_handle;
>+			int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
>+			uint8_t *pQbuffer, *ptmpuserbuffer;
>+
>+			ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
>+			if (!ver_addr) {
>+				retvalue = ARCMSR_MESSAGE_FAIL;
>+				goto message_out;
>+			}
>+			ptmpuserbuffer = (uint8_t *)ver_addr;
>+			user_len = pcmdmessagefld->cmdmessage.Length;
>+			memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
>+			wqbuf_lastindex = acb->wqbuf_lastindex;
>+			wqbuf_firstindex = acb->wqbuf_firstindex;
>+			if (wqbuf_lastindex != wqbuf_firstindex) {
>+				struct SENSE_DATA *sensebuffer =
>+					(struct SENSE_DATA *)cmd->sense_buffer;
>+				arcmsr_post_Qbuffer(acb);
>+				/* has error report sensedata */
>+				sensebuffer->ErrorCode = 0x70;
>+				sensebuffer->SenseKey = ILLEGAL_REQUEST;
>+				sensebuffer->AdditionalSenseLength = 0x0A;
>+				sensebuffer->AdditionalSenseCode = 0x20;
>+				sensebuffer->Valid = 1;
>+				retvalue = ARCMSR_MESSAGE_FAIL;
>+			} else {
>+				my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
>+						&(ARCMSR_MAX_QBUFFER - 1);
>+				if (my_empty_len >= user_len) {
>+					while (user_len > 0) {
>+						pQbuffer =
>+						&acb->wqbuffer[acb->wqbuf_lastindex];
>+						memcpy(pQbuffer, ptmpuserbuffer, 1);
>+						acb->wqbuf_lastindex++;
>+						acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
>+						ptmpuserbuffer++;
>+						user_len--;
>+					}
>+					if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
>+						acb->acb_flags &=
>+							~ACB_F_MESSAGE_WQBUFFER_CLEARED;
>+						arcmsr_post_Qbuffer(acb);
>+					}
>+				} else {
>+					/* has error report sensedata */
>+					struct SENSE_DATA *sensebuffer =
>+						(struct SENSE_DATA *)cmd->sense_buffer;
>+					sensebuffer->ErrorCode = 0x70;
>+					sensebuffer->SenseKey = ILLEGAL_REQUEST;
>+					sensebuffer->AdditionalSenseLength = 0x0A;
>+					sensebuffer->AdditionalSenseCode = 0x20;
>+					sensebuffer->Valid = 1;
>+					retvalue = ARCMSR_MESSAGE_FAIL;
>+				}
>+			}
>+			pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
>+		}
>+		break;
>+	case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
>+			uint8_t *pQbuffer = acb->rqbuffer;
>+
>+			if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
>+				acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
>+				writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
>+					&reg->inbound_doorbell);
>+			}
>+			acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
>+			acb->rqbuf_firstindex = 0;
>+			acb->rqbuf_lastindex = 0;
>+			memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
>+			pcmdmessagefld->cmdmessage.ReturnCode =
>+				ARCMSR_MESSAGE_RETURNCODE_OK;
>+		}
>+		break;
>+	case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
>+			uint8_t *pQbuffer = acb->wqbuffer;
>+
>+			if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
>+				acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
>+				writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK
>+						, &reg->inbound_doorbell);
>+			}
>+			acb->acb_flags |=
>+				(ACB_F_MESSAGE_WQBUFFER_CLEARED |
>+					ACB_F_MESSAGE_WQBUFFER_READED);
>+			acb->wqbuf_firstindex = 0;
>+			acb->wqbuf_lastindex = 0;
>+			memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
>+			pcmdmessagefld->cmdmessage.ReturnCode =
>+				ARCMSR_MESSAGE_RETURNCODE_OK;
>+		}
>+		break;
>+	case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
>+			uint8_t *pQbuffer;
>+
>+			if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
>+				acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
>+				writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK
>+						, &reg->inbound_doorbell);
>+			}
>+			acb->acb_flags |=
>+				(ACB_F_MESSAGE_WQBUFFER_CLEARED
>+				| ACB_F_MESSAGE_RQBUFFER_CLEARED
>+				| ACB_F_MESSAGE_WQBUFFER_READED);
>+			acb->rqbuf_firstindex = 0;
>+			acb->rqbuf_lastindex = 0;
>+			acb->wqbuf_firstindex = 0;
>+			acb->wqbuf_lastindex = 0;
>+			pQbuffer = acb->rqbuffer;
>+			memset(pQbuffer, 0, sizeof (struct QBUFFER));
>+			pQbuffer = acb->wqbuffer;
>+			memset(pQbuffer, 0, sizeof (struct QBUFFER));
>+			pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
>+		}
>+		break;
>+	case ARCMSR_MESSAGE_RETURN_CODE_3F: {
>+			pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F;
>+		}
>+		break;
>+	case ARCMSR_MESSAGE_SAY_HELLO: {
>+			int8_t * hello_string = "Hello! I am ARCMSR";
>+
>+			memcpy(pcmdmessagefld->messagedatabuffer, hello_string
>+				, (int16_t)strlen(hello_string));
>+			pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
>+		}
>+		break;
>+	case ARCMSR_MESSAGE_SAY_GOODBYE:
>+		arcmsr_iop_parking(acb);
>+		break;
>+	case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
>+		arcmsr_flush_adapter_cache(acb);
>+		break;
>+	default:
>+		retvalue = ARCMSR_MESSAGE_FAIL;
>+	}
>+ message_out:
>+	if (cmd->use_sg) {
>+		struct scatterlist *sg;
>+
>+		sg = (struct scatterlist *) cmd->request_buffer;
>+		kunmap_atomic(buffer - sg->offset, KM_IRQ0);
>+	}
>+	return retvalue;
>+}
>+
>+static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
>+{
>+	struct list_head *head = &acb->ccb_free_list;
>+	struct CommandControlBlock *ccb = NULL;
>+
>+	if (!list_empty(head)) {
>+		ccb = list_entry(head->next, struct CommandControlBlock, list);
>+		list_del(head->next);
>+	}
>+	return ccb;
>+}
>+
>+static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
>+		struct scsi_cmnd *cmd)
>+{
>+	switch (cmd->cmnd[0]) {
>+	case INQUIRY: {
>+		unsigned char inqdata[36];
>+		char *buffer;
>+
>+		if (cmd->device->lun) {
>+			cmd->result = (DID_TIME_OUT << 16);
>+			cmd->scsi_done(cmd);
>+			return;
>+		}
>+		inqdata[0] = TYPE_PROCESSOR;
>+		/* Periph Qualifier & Periph Dev Type */
>+		inqdata[1] = 0;
>+		/* rem media bit & Dev Type Modifier */
>+		inqdata[2] = 0;
>+		/* ISO,ECMA,& ANSI versions */
>+		inqdata[4] = 31;
>+		/* length of additional data */
>+		strncpy(&inqdata[8], "Areca   ", 8);
>+		/* Vendor Identification */
>+		strncpy(&inqdata[16], "RAID controller ", 16);
>+		/* Product Identification */
>+		strncpy(&inqdata[32], "R001", 4); /* Product Revision */
>+		if (cmd->use_sg) {
>+			struct scatterlist *sg;
>+
>+			sg = (struct scatterlist *) cmd->request_buffer;
>+			buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
>+		} else {
>+			buffer = cmd->request_buffer;
>+		}
>+		memcpy(buffer, inqdata, sizeof(inqdata));
>+		if (cmd->use_sg) {
>+			struct scatterlist *sg;
>+
>+			sg = (struct scatterlist *) cmd->request_buffer;
>+			kunmap_atomic(buffer - sg->offset, KM_IRQ0);
>+		}
>+		cmd->scsi_done(cmd);
>+	}
>+	break;
>+	case WRITE_BUFFER:
>+	case READ_BUFFER: {
>+		if (arcmsr_iop_message_xfer(acb, cmd))
>+			cmd->result = (DID_ERROR << 16);
>+		cmd->scsi_done(cmd);
>+	}
>+	break;
>+	default:
>+		cmd->scsi_done(cmd);
>+	}
>+}
>+
>+static int arcmsr_queue_command(struct scsi_cmnd *cmd,
>+	void (* done)(struct scsi_cmnd *))
>+{
>+	struct Scsi_Host *host = cmd->device->host;
>+	struct AdapterControlBlock *acb =
>+		(struct AdapterControlBlock *) host->hostdata;
>+	struct CommandControlBlock *ccb;
>+	int target = cmd->device->id;
>+	int lun = cmd->device->lun;
>+
>+	cmd->scsi_done = done;
>+	cmd->host_scribble = NULL;
>+	cmd->result = 0;
>+	if (acb->acb_flags & ACB_F_BUS_RESET) {
>+		printk(KERN_NOTICE "arcmsr%d: bus reset"
>+			" and return busy \n"
>+			, acb->host->host_no);
>+		return SCSI_MLQUEUE_HOST_BUSY;
>+	}
>+	if(target == 16) {
>+		/* virtual device for iop message transfer */
>+		arcmsr_handle_virtual_command(acb, cmd);
>+		return 0;
>+	}
>+	if (acb->devstate[target][lun] == ARECA_RAID_GONE) {
>+		uint8_t block_cmd;
>+
>+		block_cmd = cmd->cmnd[0] & 0x0f;
>+		if (block_cmd == 0x08 || block_cmd == 0x0a) {
>+			printk(KERN_NOTICE
>+				"arcmsr%d: block 'read/write'"
>+				"command with gone raid volume"
>+				" Cmd=%2x, TargetId=%d, Lun=%d \n"
>+				, acb->host->host_no
>+				, cmd->cmnd[0]
>+				, target, lun);
>+			cmd->result = (DID_NO_CONNECT << 16);
>+			cmd->scsi_done(cmd);
>+			return 0;
>+		}
>+	}
>+	if (atomic_read(&acb->ccboutstandingcount) >=
>+			ARCMSR_MAX_OUTSTANDING_CMD)
>+		return SCSI_MLQUEUE_HOST_BUSY;
>+
>+	ccb = arcmsr_get_freeccb(acb);
>+	if (!ccb)
>+		return SCSI_MLQUEUE_HOST_BUSY;
>+	arcmsr_build_ccb(acb, ccb, cmd);
>+	arcmsr_post_ccb(acb, ccb);
>+	return 0;
>+}
>+
>+static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
>+{
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+	char *acb_firm_model = acb->firm_model;
>+	char *acb_firm_version = acb->firm_version;
>+	char __iomem *iop_firm_model = (char __iomem *) &reg->message_rwbuffer[15];
>+	char __iomem *iop_firm_version = (char __iomem *) &reg->message_rwbuffer[17];
>+	int count;
>+
>+	writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
>+	if (arcmsr_wait_msgint_ready(acb))
>+		printk(KERN_NOTICE
>+			"arcmsr%d: wait "
>+			"'get adapter firmware miscellaneous data' timeout \n"
>+			, acb->host->host_no);
>+	count = 8;
>+	while (count) {
>+		*acb_firm_model = readb(iop_firm_model);
>+		acb_firm_model++;
>+		iop_firm_model++;
>+		count--;
>+	}
>+	count = 16;
>+	while (count) {
>+		*acb_firm_version = readb(iop_firm_version);
>+		acb_firm_version++;
>+		iop_firm_version++;
>+		count--;
>+	}
>+	printk(KERN_INFO
>+		"ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n"
>+		, acb->host->host_no
>+		, acb->firm_version);
>+	acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
>+	acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
>+	acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
>+	acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
>+}
>+
>+static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
>+	struct CommandControlBlock *poll_ccb)
>+{
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+	struct CommandControlBlock *ccb;
>+	uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
>+	int id, lun;
>+
>+ polling_ccb_retry:
>+	poll_count++;
>+	outbound_intstatus = readl(&reg->outbound_intstatus)
>+					& acb->outbound_int_enable;
>+	writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
>+	while (1) {
>+		if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
>+			if (poll_ccb_done)
>+				break;
>+			else {
>+				msleep(25);
>+				if (poll_count > 100)
>+					break;
>+				goto polling_ccb_retry;
>+			}
>+		}
>+		ccb = (struct CommandControlBlock *)
>+			(acb->vir2phy_offset + (flag_ccb << 5));
>+		if ((ccb->acb != acb) ||
>+			(ccb->startdone != ARCMSR_CCB_START)) {
>+			if ((ccb->startdone == ARCMSR_CCB_ABORTED) ||
>+				(ccb == poll_ccb)) {
>+				printk(KERN_NOTICE
>+					"arcmsr%d: scsi id=%d lun=%d ccb='0x%p'"
>+					" poll command abort successfully \n"
>+					, acb->host->host_no
>+					, ccb->pcmd->device->id
>+					, ccb->pcmd->device->lun
>+					, ccb);
>+				ccb->pcmd->result = DID_ABORT << 16;
>+				arcmsr_ccb_complete(ccb, 1);
>+				poll_ccb_done = 1;
>+				continue;
>+			}
>+			printk(KERN_NOTICE
>+				"arcmsr%d: polling get an illegal ccb"
>+				" command done ccb='0x%p'"
>+				"ccboutstandingcount=%d \n"
>+				, acb->host->host_no
>+				, ccb
>+				, atomic_read(&acb->ccboutstandingcount));
>+			continue;
>+		}
>+		id = ccb->pcmd->device->id;
>+		lun = ccb->pcmd->device->lun;
>+		if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) {
>+			if (acb->devstate[id][lun] == ARECA_RAID_GONE)
>+				acb->devstate[id][lun] = ARECA_RAID_GOOD;
>+			ccb->pcmd->result = DID_OK << 16;
>+			arcmsr_ccb_complete(ccb, 1);
>+		} else {
>+			switch(ccb->arcmsr_cdb.DeviceStatus) {
>+			case ARCMSR_DEV_SELECT_TIMEOUT: {
>+					acb->devstate[id][lun] = ARECA_RAID_GONE;
>+					ccb->pcmd->result = DID_TIME_OUT << 16;
>+					arcmsr_ccb_complete(ccb, 1);
>+				}
>+				break;
>+			case ARCMSR_DEV_ABORTED:
>+			case ARCMSR_DEV_INIT_FAIL: {
>+					acb->devstate[id][lun] = ARECA_RAID_GONE;
>+					ccb->pcmd->result = DID_BAD_TARGET << 16;
>+					arcmsr_ccb_complete(ccb, 1);
>+				}
>+				break;
>+			case ARCMSR_DEV_CHECK_CONDITION: {
>+					acb->devstate[id][lun] = ARECA_RAID_GOOD;
>+					arcmsr_report_sense_info(ccb);
>+					arcmsr_ccb_complete(ccb, 1);
>+				}
>+				break;
>+			default:
>+				printk(KERN_NOTICE
>+					"arcmsr%d: scsi id=%d lun=%d"
>+					" polling and getting command error done"
>+					"but got unknown DeviceStatus = 0x%x \n"
>+					, acb->host->host_no
>+					, id
>+					, lun
>+					, ccb->arcmsr_cdb.DeviceStatus);
>+				acb->devstate[id][lun] = ARECA_RAID_GONE;
>+				ccb->pcmd->result = DID_BAD_TARGET << 16;
>+				arcmsr_ccb_complete(ccb, 1);
>+				break;
>+			}
>+		}
>+	}
>+}
>+
>+static void arcmsr_iop_init(struct AdapterControlBlock *acb)
>+{
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+	uint32_t intmask_org, mask, outbound_doorbell, firmware_state = 0;
>+
>+	do {
>+		firmware_state = readl(&reg->outbound_msgaddr1);
>+	} while (!(firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK));
>+	intmask_org = readl(&reg->outbound_intmask)
>+			| ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE;
>+	arcmsr_get_firmware_spec(acb);
>+
>+	acb->acb_flags |= ACB_F_MSG_START_BGRB;
>+	writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
>+	if (arcmsr_wait_msgint_ready(acb)) {
>+		printk(KERN_NOTICE "arcmsr%d: "
>+			"wait 'start adapter background rebulid' timeout\n",
>+			acb->host->host_no);
>+	}
>+
>+	outbound_doorbell = readl(&reg->outbound_doorbell);
>+	writel(outbound_doorbell, &reg->outbound_doorbell);
>+	writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
>+	mask = ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE
>+			| ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
>+	writel(intmask_org & mask, &reg->outbound_intmask);
>+	acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
>+	acb->acb_flags |= ACB_F_IOP_INITED;
>+}
>+
>+static void arcmsr_iop_reset(struct AdapterControlBlock *acb)
>+{
>+	struct MessageUnit __iomem *reg = acb->pmu;
>+	struct CommandControlBlock *ccb;
>+	uint32_t intmask_org;
>+	int i = 0;
>+
>+	if (atomic_read(&acb->ccboutstandingcount) != 0) {
>+		/* talk to iop 331 outstanding command aborted */
>+		arcmsr_abort_allcmd(acb);
>+		/* wait for 3 sec for all command aborted*/
>+		msleep_interruptible(3000);
>+		/* disable all outbound interrupt */
>+		intmask_org = arcmsr_disable_outbound_ints(acb);
>+		/* clear all outbound posted Q */
>+		for (i = 0; i < ARCMSR_MAX_OUTSTANDING_CMD; i++)
>+			readl(&reg->outbound_queueport);
>+		for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
>+			ccb = acb->pccb_pool[i];
>+			if ((ccb->startdone == ARCMSR_CCB_START) ||
>+				(ccb->startdone == ARCMSR_CCB_ABORTED)) {
>+				ccb->startdone = ARCMSR_CCB_ABORTED;
>+				ccb->pcmd->result = DID_ABORT << 16;
>+				arcmsr_ccb_complete(ccb, 1);
>+			}
>+		}
>+		/* enable all outbound interrupt */
>+		arcmsr_enable_outbound_ints(acb, intmask_org);
>+	}
>+	atomic_set(&acb->ccboutstandingcount, 0);
>+}
>+
>+static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
>+{
>+	struct AdapterControlBlock *acb =
>+		(struct AdapterControlBlock *)cmd->device->host->hostdata;
>+	int i;
>+
>+	acb->num_resets++;
>+	acb->acb_flags |= ACB_F_BUS_RESET;
>+	for (i = 0; i < 400; i++) {
>+		if (!atomic_read(&acb->ccboutstandingcount))
>+			break;
>+		arcmsr_interrupt(acb);
>+		msleep(25);
>+	}
>+	arcmsr_iop_reset(acb);
>+	acb->acb_flags &= ~ACB_F_BUS_RESET;
>+	return SUCCESS;
>+}
>+
>+static void arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
>+		struct CommandControlBlock *ccb)
>+{
>+	u32 intmask;
>+
>+	ccb->startdone = ARCMSR_CCB_ABORTED;
>+
>+	/*
>+	** Wait for 3 sec for all command done.
>+	*/
>+	msleep_interruptible(3000);
>+
>+	intmask = arcmsr_disable_outbound_ints(acb);
>+	arcmsr_polling_ccbdone(acb, ccb);
>+	arcmsr_enable_outbound_ints(acb, intmask);
>+}
>+
>+static int arcmsr_abort(struct scsi_cmnd *cmd)
>+{
>+	struct AdapterControlBlock *acb =
>+		(struct AdapterControlBlock *)cmd->device->host->hostdata;
>+	int i = 0;
>+
>+	printk(KERN_NOTICE
>+		"arcmsr%d: abort device command of scsi id=%d lun=%d \n",
>+		acb->host->host_no, cmd->device->id, cmd->device->lun);
>+	acb->num_aborts++;
>+
>+	/*
>+	************************************************
>+	** the all interrupt service routine is locked
>+	** we need to handle it as soon as possible and exit
>+	************************************************
>+	*/
>+	if (!atomic_read(&acb->ccboutstandingcount))
>+		return SUCCESS;
>+
>+	for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
>+		struct CommandControlBlock *ccb = acb->pccb_pool[i];
>+		if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
>+			arcmsr_abort_one_cmd(acb, ccb);
>+			break;
>+		}
>+	}
>+
>+	return SUCCESS;
>+}
>+
>+static const char *arcmsr_info(struct Scsi_Host *host)
>+{
>+	struct AdapterControlBlock *acb =
>+		(struct AdapterControlBlock *) host->hostdata;
>+	static char buf[256];
>+	char *type;
>+	int raid6 = 1;
>+
>+	switch (acb->pdev->device) {
>+	case PCI_DEVICE_ID_ARECA_1110:
>+	case PCI_DEVICE_ID_ARECA_1210:
>+		raid6 = 0;
>+		/*FALLTHRU*/
>+	case PCI_DEVICE_ID_ARECA_1120:
>+	case PCI_DEVICE_ID_ARECA_1130:
>+	case PCI_DEVICE_ID_ARECA_1160:
>+	case PCI_DEVICE_ID_ARECA_1170:
>+	case PCI_DEVICE_ID_ARECA_1220:
>+	case PCI_DEVICE_ID_ARECA_1230:
>+	case PCI_DEVICE_ID_ARECA_1260:
>+	case PCI_DEVICE_ID_ARECA_1270:
>+	case PCI_DEVICE_ID_ARECA_1280:
>+		type = "SATA";
>+		break;
>+	case PCI_DEVICE_ID_ARECA_1380:
>+	case PCI_DEVICE_ID_ARECA_1381:
>+	case PCI_DEVICE_ID_ARECA_1680:
>+	case PCI_DEVICE_ID_ARECA_1681:
>+		type = "SAS";
>+		break;
>+	default:
>+		type = "X-TYPE";
>+		break;
>+	}
>+	sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n        %s",
>+			type, raid6 ? "( RAID6 capable)" : "",
>+			ARCMSR_DRIVER_VERSION);
>+	return buf;
>+}
>+
>+
>diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
>index ed96bf7..f2af1a6 100644
>--- a/include/linux/pci_ids.h
>+++ b/include/linux/pci_ids.h
>@@ -1959,6 +1959,23 @@
> #define PCI_DEVICE_ID_ALTIMA_AC9100	0x03ea
> #define PCI_DEVICE_ID_ALTIMA_AC1003	0x03eb
> 
>+#define PCI_VENDOR_ID_ARECA		0x17d3
>+#define PCI_DEVICE_ID_ARECA_1110	0x1110
>+#define PCI_DEVICE_ID_ARECA_1120	0x1120
>+#define PCI_DEVICE_ID_ARECA_1130	0x1130
>+#define PCI_DEVICE_ID_ARECA_1160	0x1160
>+#define PCI_DEVICE_ID_ARECA_1170	0x1170
>+#define PCI_DEVICE_ID_ARECA_1210	0x1210
>+#define PCI_DEVICE_ID_ARECA_1220	0x1220
>+#define PCI_DEVICE_ID_ARECA_1230	0x1230
>+#define PCI_DEVICE_ID_ARECA_1260	0x1260
>+#define PCI_DEVICE_ID_ARECA_1270	0x1270
>+#define PCI_DEVICE_ID_ARECA_1280	0x1280
>+#define PCI_DEVICE_ID_ARECA_1380	0x1380
>+#define PCI_DEVICE_ID_ARECA_1381	0x1381
>+#define PCI_DEVICE_ID_ARECA_1680	0x1680
>+#define PCI_DEVICE_ID_ARECA_1681	0x1681
>+
> #define PCI_VENDOR_ID_S2IO		0x17d5
> #define	PCI_DEVICE_ID_S2IO_WIN		0x5731
> #define	PCI_DEVICE_ID_S2IO_UNI		0x5831

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Attachments on bug 205897: 153490