diff --git a/drivers/scsi/arcmsr/arcmsr.h b/drivers/scsi/arcmsr/arcmsr.h
index c0861c0..475c31a 100644
--- a/drivers/scsi/arcmsr/arcmsr.h
+++ b/drivers/scsi/arcmsr/arcmsr.h
@@ -43,12 +43,11 @@
 *******************************************************************************
 */
 #include <linux/interrupt.h>
-
 struct device_attribute;
 /*The limit of outstanding scsi command that firmware can handle*/
 #define ARCMSR_MAX_OUTSTANDING_CMD						256
 #define ARCMSR_MAX_FREECCB_NUM							320
-#define ARCMSR_DRIVER_VERSION		     "Driver Version 1.20.00.15 2009/12/09"
+#define ARCMSR_DRIVER_VERSION		     "Driver Version 1.20.00.15 2010/02/02"
 #define ARCMSR_SCSI_INITIATOR_ID						255
 #define ARCMSR_MAX_XFER_SECTORS							512
 #define ARCMSR_MAX_XFER_SECTORS_B						4096
@@ -60,7 +59,8 @@
 #define ARCMSR_DEFAULT_SG_ENTRIES						38
 #define ARCMSR_MAX_HBB_POSTQUEUE						264
 #define ARCMSR_MAX_XFER_LEN							0x26000 /* 152K */
-#define ARCMSR_CDB_SG_PAGE_LENGTH						256
+#define ARCMSR_CDB_SG_PAGE_LENGTH						256 
+#define SCSI_CMD_ARECA_SPECIFIC						0xE1
 #ifndef PCI_DEVICE_ID_ARECA_1880
 #define PCI_DEVICE_ID_ARECA_1880 0x1880
  #endif
@@ -138,9 +138,9 @@
 #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
+#define ARCMSR_MESSAGE_RETURNCODE_OK		0x00000001
+#define ARCMSR_MESSAGE_RETURNCODE_ERROR		0x00000006
+#define ARCMSR_MESSAGE_RETURNCODE_3F		0x0000003F
 #define ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON	0x00000088
 /*
 *************************************************************
@@ -153,13 +153,13 @@
 {
 	__le32					length;
 	__le32					address;
-} __attribute__ ((packed));
+}__attribute__ ((packed));
 struct  SG64ENTRY
 {
 	__le32					length;
 	__le32					address;
 	__le32					addresshigh;
-} __attribute__ ((packed));
+}__attribute__ ((packed));
 /*
 ********************************************************************
 **      Q Buffer of IOP Message Transfer
@@ -186,9 +186,9 @@
 	char          model[8];			/*15, 60-67*/
 	char          firmware_ver[16];     	/*17, 68-83*/
 	char          device_map[16];		/*21, 84-99*/
-	uint32_t		cfgVersion;	/*25,100-103 Added for checking of new firmware capability*/
-	uint8_t		cfgSerial[16];		/*26,104-119*/
-	uint32_t		cfgPicStatus;	/*30,120-123*/
+	uint32_t		cfgVersion;               	/*25,100-103 Added for checking of new firmware capability*/
+	uint8_t		cfgSerial[16];           	/*26,104-119*/
+	uint32_t		cfgPicStatus;            	/*30,120-123*/	
 };
 /* signature of set and get firmware config */
 #define ARCMSR_SIGNATURE_GET_CONFIG		      0x87974060
@@ -212,11 +212,15 @@
 #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
+#define ARCMSR_CCBREPLY_FLAG_ERROR_MODE0              0x10000000
+#define ARCMSR_CCBREPLY_FLAG_ERROR_MODE1              0x00000001
 /* outbound firmware ok */
 #define ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK             0x80000000
 /* ARC-1680 Bus Reset*/
 #define ARCMSR_ARC1680_BUS_RESET				0x00000003
+/* ARC-1880 Bus Reset*/
+#define ARCMSR_ARC1880_RESET_ADAPTER				0x00000024
+#define ARCMSR_ARC1880_DiagWrite_ENABLE			0x00000080
 
 /*
 ************************************************************************
@@ -273,6 +277,61 @@
 #define ARCMSR_MESSAGE_RBUFFER			      0x0000ff00
 /* iop message_rwbuffer for message command */
 #define ARCMSR_MESSAGE_RWBUFFER			      0x0000fa00
+/* 
+************************************************************************
+**                SPEC. for Areca HBC adapter
+************************************************************************
+*/
+#define ARCMSR_HBC_ISR_THROTTLING_LEVEL		12
+#define ARCMSR_HBC_ISR_MAX_DONE_QUEUE		20
+/* Host Interrupt Mask */
+#define ARCMSR_HBCMU_UTILITY_A_ISR_MASK		0x00000001 /* When clear, the Utility_A interrupt routes to the host.*/
+#define ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK	0x00000004 /* When clear, the General Outbound Doorbell interrupt routes to the host.*/
+#define ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK	0x00000008 /* When clear, the Outbound Post List FIFO Not Empty interrupt routes to the host.*/
+#define ARCMSR_HBCMU_ALL_INTMASKENABLE		0x0000000D /* disable all ISR */
+/* Host Interrupt Status */
+#define ARCMSR_HBCMU_UTILITY_A_ISR			0x00000001
+	/*
+	** Set when the Utility_A Interrupt bit is set in the Outbound Doorbell Register.
+	** It clears by writing a 1 to the Utility_A bit in the Outbound Doorbell Clear Register or through automatic clearing (if enabled).
+	*/
+#define ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR		0x00000004
+	/*
+	** Set if Outbound Doorbell register bits 30:1 have a non-zero
+	** value. This bit clears only when Outbound Doorbell bits
+	** 30:1 are ALL clear. Only a write to the Outbound Doorbell
+	** Clear register clears bits in the Outbound Doorbell register.
+	*/
+#define ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR	0x00000008
+	/*
+	** Set whenever the Outbound Post List Producer/Consumer
+	** Register (FIFO) is not empty. It clears when the Outbound
+	** Post List FIFO is empty.
+	*/
+#define ARCMSR_HBCMU_SAS_ALL_INT			0x00000010
+	/*
+	** This bit indicates a SAS interrupt from a source external to
+	** the PCIe core. This bit is not maskable.
+	*/
+	/* DoorBell*/
+#define ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK			0x00000002
+#define ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK			0x00000004
+	/*inbound message 0 ready*/
+#define ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE		0x00000008
+	/*more than 12 request completed in a time*/
+#define ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING		0x00000010
+#define ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK			0x00000002
+	/*outbound DATA WRITE isr door bell clear*/
+#define ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_DOORBELL_CLEAR	0x00000002
+#define ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK			0x00000004
+	/*outbound DATA READ isr door bell clear*/
+#define ARCMSR_HBCMU_IOP2DRV_DATA_READ_DOORBELL_CLEAR	0x00000004
+	/*outbound message 0 ready*/
+#define ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE		0x00000008
+	/*outbound message cmd isr door bell clear*/
+#define ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR	0x00000008
+	/*ARCMSR_HBAMU_MESSAGE_FIRMWARE_OK*/
+#define ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK			0x80000000
 /*
 *******************************************************************************
 **    ARECA SCSI COMMAND DESCRIPTOR BLOCK size 0x1F8 (504)
@@ -310,7 +369,7 @@
 		struct SG32ENTRY                sg32entry[1];
 		struct SG64ENTRY                sg64entry[1];
 	} u;
-} __attribute__ ((packed));
+};
 /*
 *******************************************************************************
 **     Messaging Unit (MU) of the Intel R 80331 I/O processor(Type A) and Type B processor
@@ -356,7 +415,81 @@
 	uint32_t		__iomem *message_wbuffer;
 	uint32_t		__iomem *message_rbuffer;
 };
-
+/*
+*********************************************************************
+** LSI
+*********************************************************************
+*/
+struct MessageUnit_C{
+	uint32_t	message_unit_status;			/*0000 0003*/
+	uint32_t	slave_error_attribute;			/*0004 0007*/
+	uint32_t	slave_error_address;			/*0008 000B*/
+	uint32_t	posted_outbound_doorbell;		/*000C 000F*/
+	uint32_t	master_error_attribute;			/*0010 0013*/
+	uint32_t	master_error_address_low;		/*0014 0017*/
+	uint32_t	master_error_address_high;		/*0018 001B*/
+	uint32_t	hcb_size;				/*001C 001F*/
+	uint32_t	inbound_doorbell;			/*0020 0023*/
+	uint32_t	diagnostic_rw_data;			/*0024 0027*/
+	uint32_t	diagnostic_rw_address_low;		/*0028 002B*/
+	uint32_t	diagnostic_rw_address_high;		/*002C 002F*/
+	uint32_t	host_int_status;				/*0030 0033*/
+	uint32_t	host_int_mask;				/*0034 0037*/
+	uint32_t	dcr_data;				/*0038 003B*/
+	uint32_t	dcr_address;				/*003C 003F*/
+	uint32_t	inbound_queueport;			/*0040 0043*/
+	uint32_t	outbound_queueport;			/*0044 0047*/
+	uint32_t	hcb_pci_address_low;			/*0048 004B*/
+	uint32_t	hcb_pci_address_high;			/*004C 004F*/
+	uint32_t	iop_int_status;				/*0050 0053*/
+	uint32_t	iop_int_mask;				/*0054 0057*/
+	uint32_t	iop_inbound_queue_port;			/*0058 005B*/
+	uint32_t	iop_outbound_queue_port;		/*005C 005F*/
+	uint32_t	inbound_free_list_index;			/*0060 0063*/
+	uint32_t	inbound_post_list_index;			/*0064 0067*/
+	uint32_t	outbound_free_list_index;			/*0068 006B*/
+	uint32_t	outbound_post_list_index;			/*006C 006F*/
+	uint32_t	inbound_doorbell_clear;			/*0070 0073*/
+	uint32_t	i2o_message_unit_control;			/*0074 0077*/
+	uint32_t	last_used_message_source_address_low;	/*0078 007B*/
+	uint32_t	last_used_message_source_address_high;	/*007C 007F*/
+	uint32_t	pull_mode_data_byte_count[4];		/*0080 008F*/
+	uint32_t	message_dest_address_index;		/*0090 0093*/
+	uint32_t	done_queue_not_empty_int_counter_timer;	/*0094 0097*/
+	uint32_t	utility_A_int_counter_timer;		/*0098 009B*/
+	uint32_t	outbound_doorbell;			/*009C 009F*/
+	uint32_t	outbound_doorbell_clear;			/*00A0 00A3*/
+	uint32_t	message_source_address_index;		/*00A4 00A7*/
+	uint32_t	message_done_queue_index;		/*00A8 00AB*/
+	uint32_t	reserved0;				/*00AC 00AF*/
+	uint32_t	inbound_msgaddr0;			/*00B0 00B3*/
+	uint32_t	inbound_msgaddr1;			/*00B4 00B7*/
+	uint32_t	outbound_msgaddr0;			/*00B8 00BB*/
+	uint32_t	outbound_msgaddr1;			/*00BC 00BF*/
+	uint32_t	inbound_queueport_low;			/*00C0 00C3*/
+	uint32_t	inbound_queueport_high;			/*00C4 00C7*/
+	uint32_t	outbound_queueport_low;			/*00C8 00CB*/
+	uint32_t	outbound_queueport_high;		/*00CC 00CF*/
+	uint32_t	iop_inbound_queue_port_low;		/*00D0 00D3*/
+	uint32_t	iop_inbound_queue_port_high;		/*00D4 00D7*/
+	uint32_t	iop_outbound_queue_port_low;		/*00D8 00DB*/
+	uint32_t	iop_outbound_queue_port_high;		/*00DC 00DF*/
+	uint32_t	message_dest_queue_port_low;		/*00E0 00E3*/
+	uint32_t	message_dest_queue_port_high;		/*00E4 00E7*/
+	uint32_t	last_used_message_dest_address_low;	/*00E8 00EB*/
+	uint32_t	last_used_message_dest_address_high;	/*00EC 00EF*/
+	uint32_t	message_done_queue_base_address_low;	/*00F0 00F3*/
+	uint32_t	message_done_queue_base_address_high;	/*00F4 00F7*/
+	uint32_t	host_diagnostic;				/*00F8 00FB*/
+	uint32_t	write_sequence;				/*00FC 00FF*/
+	uint32_t	reserved1[34];				/*0100 0187*/
+	uint32_t	reserved2[1950];				/*0188 1FFF*/
+	uint32_t	message_wbuffer[32];			/*2000 207F*/
+	uint32_t	reserved3[32];				/*2080 20FF*/
+	uint32_t	message_rbuffer[32];			/*2100 217F*/
+	uint32_t	reserved4[32];				/*2180 21FF*/
+	uint32_t	msgcode_rwbuffer[256];			/*2200 23FF*/
+};
 /*
 *******************************************************************************
 **                 Adapter Control Block
@@ -374,11 +507,14 @@
 	unsigned long			vir2phy_offset;
 	/* Offset is used in making arc cdb physical to virtual calculations */
 	uint32_t			outbound_int_enable;
+	uint32_t			cdb_phyaddr_hi32;
+	uint32_t			reg_mu_acc_handle0;
 	spinlock_t                      			eh_lock;
 	spinlock_t                      			ccblist_lock;
 	union {
-		struct MessageUnit_A __iomem *	pmuA;
-		struct MessageUnit_B *		pmuB;
+		struct MessageUnit_A __iomem *pmuA;
+		struct MessageUnit_B 	*pmuB;
+		struct MessageUnit_C __iomem *pmuC;
 	};
 	/* message unit ATU inbound base address0 */
 	void __iomem *mem_base0;
@@ -399,6 +535,8 @@
 	/* message clear rqbuffer */
 	#define ACB_F_MESSAGE_WQBUFFER_READED   0x0040
 	#define ACB_F_BUS_RESET               	0x0080
+	#define ACB_F_BUS_HANG_ON		0x0800/* need hardware reset bus */
+
 	#define ACB_F_IOP_INITED              	0x0100
 	/* iop init */
 	#define ACB_F_ABORT				0x0200
@@ -441,9 +579,9 @@
 	uint32_t			firm_numbers_queue;
 	uint32_t			firm_sdram_size;
 	uint32_t			firm_hd_channels;
-	uint32_t                           	firm_cfg_version;
-	char				firm_model[12];
-	char				firm_version[20];
+	uint32_t                           	firm_cfg_version;	
+	char			firm_model[12];
+	char			firm_version[20];
 	char			device_map[20];			/*21,84-99*/
 	struct work_struct 		arcmsr_do_message_isr_bh;
 	struct timer_list		eternal_timer;
@@ -460,31 +598,31 @@
 **             this CCB length must be 32 bytes boundary
 *******************************************************************************
 */
-struct CommandControlBlock
-{
+struct CommandControlBlock{
 	/*x32:sizeof struct_CCB=(32+60)byte, x64:sizeof struct_CCB=(64+60)byte*/
 	struct list_head		list;				/*x32: 8byte, x64: 16byte*/
 	struct scsi_cmnd		*pcmd;				/*8 bytes pointer of linux scsi command */
 	struct AdapterControlBlock	*acb;				/*x32: 4byte, x64: 8byte*/
-	uint32_t			shifted_cdb_phyaddr;		/*x32: 4byte, x64: 4byte*/
+	uint32_t			cdb_phyaddr_pattern;		/*x32: 4byte, x64: 4byte*/
+	uint32_t			arc_cdb_size;			/*x32:4byte,x64:4byte*/
 	uint16_t			ccb_flags;			/*x32: 2byte, x64: 2byte*/
-	#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
+	#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;			/*x32:2byte,x32:2byte*/
-	#define		ARCMSR_CCB_DONE			0x0000
-	#define		ARCMSR_CCB_START		0x55AA
-	#define		ARCMSR_CCB_ABORTED		0xAA55
-	#define		ARCMSR_CCB_ILLEGAL		0xFFFF
+	#define			ARCMSR_CCB_DONE   	        	0x0000
+	#define			ARCMSR_CCB_START		0x55AA
+	#define			ARCMSR_CCB_ABORTED		0xAA55
+	#define			ARCMSR_CCB_ILLEGAL		0xFFFF
 	#if BITS_PER_LONG == 64
 	/*  ======================512+64 bytes========================  */
-		uint32_t                        	reserved[6];		/*24 byte*/
-#else
+		uint32_t                        	reserved[5];		/*24 byte*/
+	#else
 	/*  ======================512+32 bytes========================  */
-		uint32_t                        	reserved[2];		/*8  byte*/
-#endif
+		uint32_t                        	reserved;		/*8  byte*/
+	#endif
 	/*  =======================================================   */
 	struct ARCMSR_CDB		arcmsr_cdb;
 };
diff --git a/drivers/scsi/arcmsr/arcmsr_attr.c b/drivers/scsi/arcmsr/arcmsr_attr.c
index 07fdfe5..69f8346 100644
--- a/drivers/scsi/arcmsr/arcmsr_attr.c
+++ b/drivers/scsi/arcmsr/arcmsr_attr.c
@@ -59,8 +59,7 @@
 
 struct device_attribute *arcmsr_host_attrs[];
 
-static ssize_t arcmsr_sysfs_iop_message_read(struct file *filp,
-					     struct kobject *kobj,
+static ssize_t arcmsr_sysfs_iop_message_read(struct kobject *kobj,
 					     struct bin_attribute *bin,
 					     char *buf, loff_t off,
 					     size_t count)
@@ -106,8 +105,7 @@
 	return (allxfer_len);
 }
 
-static ssize_t arcmsr_sysfs_iop_message_write(struct file *filp,
-					      struct kobject *kobj,
+static ssize_t arcmsr_sysfs_iop_message_write(struct kobject *kobj,
 					      struct bin_attribute *bin,
 					      char *buf, loff_t off,
 					      size_t count)
@@ -155,8 +153,7 @@
 	}
 }
 
-static ssize_t arcmsr_sysfs_iop_message_clear(struct file *filp,
-					      struct kobject *kobj,
+static ssize_t arcmsr_sysfs_iop_message_clear(struct kobject *kobj,
 					      struct bin_attribute *bin,
 					      char *buf, loff_t off,
 					      size_t count)
diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
index ba33473..95a895d 100644
--- a/drivers/scsi/arcmsr/arcmsr_hba.c
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c
@@ -71,11 +71,11 @@
 #include <scsi/scsicam.h>
 #include "arcmsr.h"
 MODULE_AUTHOR("Nick Cheng <support@areca.com.tw>");
-MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/16xx) SATA/SAS RAID Host Bus Adapter");
+MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/16xx/1880) SATA/SAS RAID Host Bus Adapter");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_VERSION(ARCMSR_DRIVER_VERSION);
-static int sleeptime = 20;
-static int retrycount = 12;
+static int sleeptime = 10;
+static int retrycount = 30;
 wait_queue_head_t wait_q;
 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
 					struct scsi_cmnd *cmd);
@@ -99,10 +99,12 @@
 static void arcmsr_request_device_map(unsigned long pacb);
 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb);
 static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb);
+static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb);
 static void arcmsr_message_isr_bh_fn(struct work_struct *work);
 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb);
 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb);
-
+static void arcmsr_hbc_message_isr(struct AdapterControlBlock *pACB);
+static void arcmsr_hardware_reset(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,
@@ -119,18 +121,18 @@
 
 static struct scsi_host_template arcmsr_scsi_host_template = {
 	.module			= THIS_MODULE,
-	.name			= "ARCMSR ARECA SATA/SAS RAID Host Bus Adapter"
-							ARCMSR_DRIVER_VERSION,
+	.name			= "ARCMSR ARECA SATA/SAS RAID Controller"
+				ARCMSR_DRIVER_VERSION,
 	.info			= arcmsr_info,
 	.queuecommand		= arcmsr_queue_command,
-	.eh_abort_handler	= arcmsr_abort,
+	.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_FREECCB_NUM,
-	.this_id		= ARCMSR_SCSI_INITIATOR_ID,
-	.sg_tablesize	        	= ARCMSR_DEFAULT_SG_ENTRIES,
-	.max_sectors    	    	= ARCMSR_MAX_XFER_SECTORS_C,
+	.this_id			= ARCMSR_SCSI_INITIATOR_ID,
+	.sg_tablesize	        	= ARCMSR_DEFAULT_SG_ENTRIES, 
+	.max_sectors    	    	= ARCMSR_MAX_XFER_SECTORS_C, 
 	.cmd_per_lun		= ARCMSR_MAX_CMD_PERLUN,
 	.use_clustering		= ENABLE_CLUSTERING,
 	.shost_attrs		= arcmsr_host_attrs,
@@ -160,22 +162,45 @@
 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
 static struct pci_driver arcmsr_pci_driver = {
 	.name			= "arcmsr",
-	.id_table		= arcmsr_device_id_table,
+	.id_table			= arcmsr_device_id_table,
 	.probe			= arcmsr_probe,
 	.remove			= arcmsr_remove,
 	.shutdown		= arcmsr_shutdown,
 };
+/*
+****************************************************************************
+****************************************************************************
+*/
+int arcmsr_sleep_for_bus_reset(struct scsi_cmnd *cmd)
+{
+		struct Scsi_Host *shost = NULL;
+		int i, isleep;
+		shost = cmd->device->host;
+		isleep = sleeptime / 10;
+		if (isleep > 0) {
+			for (i = 0; i < isleep; i++) {
+				msleep(10000);
+			}
+		}
 
-static void arcmsr_free_mu(struct AdapterControlBlock *acb)
+		isleep = sleeptime % 10;
+		if (isleep > 0) {
+			msleep(isleep*1000);
+		}
+		printk(KERN_NOTICE "wake-up\n");
+		return 0;
+}
+
+static void arcmsr_free_hbb_mu(struct AdapterControlBlock *acb)
 {
 	switch (acb->adapter_type) {
 	case ACB_ADAPTER_TYPE_A:
+	case ACB_ADAPTER_TYPE_C:
 		break;
 	case ACB_ADAPTER_TYPE_B:{
-		struct MessageUnit_B *reg = acb->pmuB;
-			dma_free_coherent(&acb->pdev->dev,
-				sizeof(struct MessageUnit_B),
-				reg, acb->dma_coherent_handle_hbb_mu);
+		dma_free_coherent(&acb->pdev->dev,
+			sizeof(struct MessageUnit_B),
+			acb->pmuB, acb->dma_coherent_handle_hbb_mu);
 	}
 	}
 }
@@ -183,10 +208,9 @@
 static bool arcmsr_remap_pciregion(struct AdapterControlBlock *acb)
 {
 	struct pci_dev *pdev = acb->pdev;
-
-	switch (acb->adapter_type) {
+	switch (acb->adapter_type){
 	case ACB_ADAPTER_TYPE_A:{
-		acb->pmuA = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
+		acb->pmuA = ioremap(pci_resource_start(pdev,0), pci_resource_len(pdev,0));
 		if (!acb->pmuA) {
 			printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
 			return false;
@@ -208,6 +232,19 @@
 		}
 		acb->mem_base0 = mem_base0;
 		acb->mem_base1 = mem_base1;
+		break;
+	}
+	case ACB_ADAPTER_TYPE_C:{
+		acb->pmuC = ioremap_nocache(pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
+		if (!acb->pmuC) {
+			printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
+			return false;
+		}
+		if (readl(&acb->pmuC->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
+			writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &acb->pmuC->outbound_doorbell_clear);/*clear interrupt*/
+			return true;
+		}
+		break;
 	}
 	}
 	return true;
@@ -216,13 +253,19 @@
 static void arcmsr_unmap_pciregion(struct AdapterControlBlock *acb)
 {
 	switch (acb->adapter_type) {
-		case ACB_ADAPTER_TYPE_A:{
-			iounmap(acb->pmuA);
-		}
-		case ACB_ADAPTER_TYPE_B:{
-			iounmap(acb->mem_base0);
-			iounmap(acb->mem_base1);
-		}
+	case ACB_ADAPTER_TYPE_A:{
+		iounmap(acb->pmuA);
+	}
+	break;
+	case ACB_ADAPTER_TYPE_B:{
+		iounmap(acb->mem_base0);
+		iounmap(acb->mem_base1);
+	}
+
+	break;
+	case ACB_ADAPTER_TYPE_C:{
+		iounmap(acb->pmuC);
+	}
 	}
 }
 
@@ -270,34 +313,37 @@
 	pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id);
 	acb->dev_id = dev_id;
 	switch (dev_id) {
-	case 0x1201 : {
+	case 0x1880: {
+		acb->adapter_type = ACB_ADAPTER_TYPE_C;
+		}
+		break;
+	case 0x1201: {
 		acb->adapter_type = ACB_ADAPTER_TYPE_B;
 		}
 		break;
 
-	default : acb->adapter_type = ACB_ADAPTER_TYPE_A;
+	default: acb->adapter_type = ACB_ADAPTER_TYPE_A;
 	}
-}
+}	
 
 static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb)
 {
 	struct MessageUnit_A __iomem *reg = acb->pmuA;
 	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;
+				return true;
 			}
 			msleep(10);
-		} /*max 1 seconds*/
+		}/*max 1 seconds*/
 
 	} while (Retries++ < 20);/*max 20 sec*/
-	return 0xff;
+	return false;
 }
 
 static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb)
@@ -305,7 +351,6 @@
 	struct MessageUnit_B *reg = acb->pmuB;
 	uint32_t Index;
 	uint8_t Retries = 0x00;
-
 	do {
 		for (Index = 0; Index < 100; Index++) {
 			if (readl(reg->iop2drv_doorbell)
@@ -313,23 +358,39 @@
 				writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN
 					, reg->iop2drv_doorbell);
 				writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
-				return 0x00;
+				return true;
 			}
 			msleep(10);
-		} /*max 1 seconds*/
+		}/*max 1 seconds*/
 
 	} while (Retries++ < 20);/*max 20 sec*/
-	return 0xff;
+	return false;
 }
 
+static uint8_t arcmsr_hbc_wait_msgint_ready(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
+	unsigned char Retries = 0x00;
+	uint32_t Index;
+	do {
+		for (Index = 0; Index < 100; Index++) {
+			if (readl(&phbcmu->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
+				writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &phbcmu->outbound_doorbell_clear);/*clear interrupt*/
+				return true;
+			}
+			/* one us delay	*/
+			msleep(10);
+		} /*max 1 seconds*/
+	} while (Retries++ < 20); /*max 20 sec*/
+	return false;
+}
 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb)
 {
 	struct MessageUnit_A __iomem *reg = acb->pmuA;
 	int retry_count = 30;
-
 	writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
 	do {
-		if (!arcmsr_hba_wait_msgint_ready(acb))
+		if (arcmsr_hba_wait_msgint_ready(acb))
 			break;
 		else {
 			retry_count--;
@@ -343,10 +404,9 @@
 {
 	struct MessageUnit_B *reg = acb->pmuB;
 	int retry_count = 30;
-
 	writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell);
 	do {
-		if (!arcmsr_hbb_wait_msgint_ready(acb))
+		if (arcmsr_hbb_wait_msgint_ready(acb))
 			break;
 		else {
 			retry_count--;
@@ -356,6 +416,23 @@
 	} while (retry_count != 0);
 }
 
+static void arcmsr_flush_hbc_cache(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
+	int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */
+	writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
+	writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
+	do {
+		if (arcmsr_hbc_wait_msgint_ready(pACB)) {
+			break;
+		} else {
+			retry_count--;
+			printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
+			timeout,retry count down = %d \n", pACB->host->host_no, retry_count);
+		}
+	} while (retry_count != 0);
+	return;
+}
 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
 {
 	switch (acb->adapter_type) {
@@ -368,151 +445,94 @@
 	case ACB_ADAPTER_TYPE_B: {
 		arcmsr_flush_hbb_cache(acb);
 		}
+		break;
+	case ACB_ADAPTER_TYPE_C: {
+		arcmsr_flush_hbc_cache(acb);
+		}
 	}
 }
 
 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
 {
-		struct pci_dev *pdev = acb->pdev;
-	switch (acb->adapter_type) {
-		case ACB_ADAPTER_TYPE_A: {
+	struct pci_dev *pdev = acb->pdev;
+	void *dma_coherent;
+	dma_addr_t dma_coherent_handle;
+	struct CommandControlBlock *ccb_tmp;
+	int i = 0, j = 0;
+	dma_addr_t cdb_phyaddr;
+	unsigned long roundup_ccbsize = 0, offset;
+	unsigned long max_xfer_len;
+	unsigned long max_sg_entrys;
+	uint32_t  firm_config_version;
+	for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
+		for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
+			acb->devstate[i][j] = ARECA_RAID_GONE;
 
-		void *dma_coherent;
-			dma_addr_t dma_coherent_handle;
-		struct CommandControlBlock *ccb_tmp;
-			int i = 0, j = 0;
-			dma_addr_t cdb_phyaddr;
-			unsigned long roundup_ccbsize = 0;
-			unsigned long max_xfer_len;
-			unsigned long max_sg_entrys;
-			uint32_t  firm_config_version;
-
-			for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
-				for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
-					acb->devstate[i][j] = ARECA_RAID_GONE;
-
-			max_xfer_len = ARCMSR_MAX_XFER_LEN;
-			max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES;
-			firm_config_version = acb->firm_cfg_version;
-			if ((firm_config_version & 0xFF) >= 3) {
-				max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH << ((firm_config_version >> 8) & 0xFF)) * 1024;/* max 16M byte */
-				max_sg_entrys = (max_xfer_len/4096);
-			}
-			acb->host->max_sectors = max_xfer_len/512;
-			acb->host->sg_tablesize = max_sg_entrys;
-			roundup_ccbsize = roundup(sizeof(struct CommandControlBlock) + max_sg_entrys * sizeof(struct SG64ENTRY), 32);
-			acb->uncache_size = roundup_ccbsize * ARCMSR_MAX_FREECCB_NUM;
-			dma_coherent = dma_alloc_coherent(&pdev->dev, acb->uncache_size, &dma_coherent_handle, GFP_KERNEL);
-		if (!dma_coherent) {
-				printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error \n", acb->host->host_no);
-			return -ENOMEM;
-		}
-			memset(dma_coherent, 0, acb->uncache_size);
-		acb->dma_coherent = dma_coherent;
-		acb->dma_coherent_handle = dma_coherent_handle;
-		ccb_tmp = (struct CommandControlBlock *)dma_coherent;
-			acb->vir2phy_offset = (unsigned long)dma_coherent - (unsigned long)dma_coherent_handle;
-		for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
-				cdb_phyaddr = dma_coherent_handle + offsetof(struct CommandControlBlock, arcmsr_cdb);
-				ccb_tmp->shifted_cdb_phyaddr = cdb_phyaddr >> 5;
-			acb->pccb_pool[i] = ccb_tmp;
-				ccb_tmp->acb = acb;
-				INIT_LIST_HEAD(&ccb_tmp->list);
-			list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
-				ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp + roundup_ccbsize);
-				dma_coherent_handle = dma_coherent_handle + roundup_ccbsize;
-		}
-		break;
-		}
-	case ACB_ADAPTER_TYPE_B: {
-
-		void *dma_coherent;
-			dma_addr_t dma_coherent_handle;
-		struct CommandControlBlock *ccb_tmp;
-			uint32_t cdb_phyaddr;
-			unsigned int roundup_ccbsize = 0;
-			unsigned long max_xfer_len;
-			unsigned long max_sg_entrys;
-			unsigned long firm_config_version;
-			unsigned long max_freeccb_num = 0;
-			int i = 0, j = 0;
-
-			max_freeccb_num = ARCMSR_MAX_FREECCB_NUM;
-			max_xfer_len = ARCMSR_MAX_XFER_LEN;
-			max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES;
-			firm_config_version = acb->firm_cfg_version;
-			if ((firm_config_version & 0xFF) >= 3) {
-				max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH <<
-						((firm_config_version >> 8) & 0xFF)) * 1024;/* max 16M byte */
-				max_sg_entrys = (max_xfer_len/4096);/* max 4097 sg entry*/
-			}
-			acb->host->max_sectors = max_xfer_len / 512;
-			acb->host->sg_tablesize = max_sg_entrys;
-			roundup_ccbsize = roundup(sizeof(struct CommandControlBlock)+
-				(max_sg_entrys - 1) * sizeof(struct SG64ENTRY), 32);
-			acb->uncache_size = roundup_ccbsize * ARCMSR_MAX_FREECCB_NUM;
-			dma_coherent = dma_alloc_coherent(&pdev->dev, acb->uncache_size,
-			&dma_coherent_handle, GFP_KERNEL);
-
-			if (!dma_coherent) {
-				printk(KERN_NOTICE "DMA allocation failed...........................\n");
-				return -ENOMEM;
-			}
-			memset(dma_coherent, 0, acb->uncache_size);
-		acb->dma_coherent = dma_coherent;
-		acb->dma_coherent_handle = dma_coherent_handle;
-		ccb_tmp = (struct CommandControlBlock *)dma_coherent;
-			acb->vir2phy_offset = (unsigned long)dma_coherent -
-					(unsigned long)dma_coherent_handle;
-		for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
-				cdb_phyaddr = dma_coherent_handle +
-					offsetof(struct CommandControlBlock, arcmsr_cdb);
-				ccb_tmp->shifted_cdb_phyaddr = cdb_phyaddr >> 5;
-			acb->pccb_pool[i] = ccb_tmp;
-				ccb_tmp->acb = acb;
-				INIT_LIST_HEAD(&ccb_tmp->list);
-			list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
-				ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp +
-									roundup_ccbsize);
-				dma_coherent_handle = dma_coherent_handle + roundup_ccbsize;
-		}
-		for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
-			for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
-					acb->devstate[i][j] = ARECA_RAID_GONE;
-		}
-		break;
+	max_xfer_len = ARCMSR_MAX_XFER_LEN;
+	max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES;
+	firm_config_version = acb->firm_cfg_version;
+	if((firm_config_version & 0xFF) >= 3){
+		max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH << ((firm_config_version >> 8) & 0xFF)) * 1024;/* max 4M byte */
+		max_sg_entrys = (max_xfer_len/4096);	
+	}
+	acb->host->max_sectors = max_xfer_len/512;
+	acb->host->sg_tablesize = max_sg_entrys;
+	roundup_ccbsize = roundup(sizeof(struct CommandControlBlock) + (max_sg_entrys - 1) * sizeof(struct SG64ENTRY), 32);
+	acb->uncache_size = roundup_ccbsize * ARCMSR_MAX_FREECCB_NUM + 32;
+	dma_coherent = dma_alloc_coherent(&pdev->dev, acb->uncache_size, &dma_coherent_handle, GFP_KERNEL);
+	if(!dma_coherent){
+		printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error \n", acb->host->host_no);
+		return -ENOMEM;
+	}
+	acb->dma_coherent = dma_coherent;
+	acb->dma_coherent_handle = dma_coherent_handle;
+	memset(dma_coherent, 0, acb->uncache_size);
+	offset = roundup((unsigned long)dma_coherent, 32) - (unsigned long)dma_coherent;
+	dma_coherent_handle = dma_coherent_handle + offset;
+	dma_coherent = (struct CommandControlBlock *)dma_coherent + offset;
+	ccb_tmp = dma_coherent;
+	acb->vir2phy_offset = (unsigned long)dma_coherent - (unsigned long)dma_coherent_handle;
+	for(i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++){
+		cdb_phyaddr = dma_coherent_handle + offsetof(struct CommandControlBlock, arcmsr_cdb);
+		ccb_tmp->cdb_phyaddr_pattern = ((acb->adapter_type == ACB_ADAPTER_TYPE_C) ? cdb_phyaddr : (cdb_phyaddr >> 5));
+		acb->pccb_pool[i] = ccb_tmp;
+		ccb_tmp->acb = acb;
+		INIT_LIST_HEAD(&ccb_tmp->list);
+		list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
+		ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp + roundup_ccbsize);
+		dma_coherent_handle = dma_coherent_handle + roundup_ccbsize;
 	}
 	return 0;
 }
-static void arcmsr_message_isr_bh_fn(struct work_struct *work)
-{
-	struct AdapterControlBlock *acb = container_of(work, struct AdapterControlBlock, arcmsr_do_message_isr_bh);
 
+static void arcmsr_message_isr_bh_fn(struct work_struct *work) 
+{
+	struct AdapterControlBlock *acb = container_of(work,struct AdapterControlBlock, arcmsr_do_message_isr_bh);
 	switch (acb->adapter_type) {
 		case ACB_ADAPTER_TYPE_A: {
 
 			struct MessageUnit_A __iomem *reg  = acb->pmuA;
 			char *acb_dev_map = (char *)acb->device_map;
-			uint32_t __iomem *signature = (uint32_t __iomem *) (&reg->message_rwbuffer[0]);
-			char __iomem *devicemap = (char __iomem *) (&reg->message_rwbuffer[21]);
+			uint32_t __iomem *signature = (uint32_t __iomem*) (&reg->message_rwbuffer[0]);
+			char __iomem *devicemap = (char __iomem*) (&reg->message_rwbuffer[21]);
 			int target, lun;
 			struct scsi_device *psdev;
 			char diff;
 
 			atomic_inc(&acb->rq_map_token);
 			if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
-				for (target = 0; target < ARCMSR_MAX_TARGETID - 1; target++) {
+				for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
 					diff = (*acb_dev_map)^readb(devicemap);
 					if (diff != 0) {
 						char temp;
 						*acb_dev_map = readb(devicemap);
-						temp = *acb_dev_map;
-						for (lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
-							if ((temp & 0x01) == 1 && (diff & 0x01) == 1) {
+						temp =*acb_dev_map;
+						for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
+							if((temp & 0x01)==1 && (diff & 0x01) == 1) {	
 								scsi_add_device(acb->host, 0, target, lun);
-							} else if ((temp & 0x01) == 0 && (diff & 0x01) == 1) {
+							}else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
 								psdev = scsi_device_lookup(acb->host, 0, target, lun);
-								if (psdev != NULL) {
+								if (psdev != NULL ) {
 									scsi_remove_device(psdev);
 									scsi_device_put(psdev);
 								}
@@ -531,8 +551,45 @@
 		case ACB_ADAPTER_TYPE_B: {
 			struct MessageUnit_B *reg  = acb->pmuB;
 			char *acb_dev_map = (char *)acb->device_map;
-			uint32_t __iomem *signature = (uint32_t __iomem *)(&reg->message_rwbuffer[0]);
-			char __iomem *devicemap = (char __iomem *)(&reg->message_rwbuffer[21]);
+			uint32_t __iomem *signature = (uint32_t __iomem*)(&reg->message_rwbuffer[0]);
+			char __iomem *devicemap = (char __iomem*)(&reg->message_rwbuffer[21]);
+			int target, lun;
+			struct scsi_device *psdev;
+			char diff;
+
+			atomic_inc(&acb->rq_map_token);
+			if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
+				for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
+					diff = (*acb_dev_map)^readb(devicemap);
+					if (diff != 0) {
+						char temp;
+						*acb_dev_map = readb(devicemap);
+						temp =*acb_dev_map;
+						for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
+							if((temp & 0x01)==1 && (diff & 0x01) == 1) {	
+								scsi_add_device(acb->host, 0, target, lun);
+							}else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
+								psdev = scsi_device_lookup(acb->host, 0, target, lun);
+								if (psdev != NULL ) {
+									scsi_remove_device(psdev);
+									scsi_device_put(psdev);
+								}
+							}
+							temp >>= 1;
+							diff >>= 1;
+						}
+					}
+					devicemap++;
+					acb_dev_map++;
+				}
+			}
+		}
+		break;
+		case ACB_ADAPTER_TYPE_C: {
+			struct MessageUnit_C *reg  = acb->pmuC;
+			char *acb_dev_map = (char *)acb->device_map;
+			uint32_t __iomem *signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
+			char __iomem *devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
 			int target, lun;
 			struct scsi_device *psdev;
 			char diff;
@@ -571,21 +628,20 @@
 {
 	struct Scsi_Host *host;
 	struct AdapterControlBlock *acb;
-	uint8_t bus, dev_fun;
+	uint8_t bus,dev_fun;
 	int error;
-
 	error = pci_enable_device(pdev);
-	if (error) {
+	if(error){
 		return -ENODEV;
 	}
 	host = scsi_host_alloc(&arcmsr_scsi_host_template, sizeof(struct AdapterControlBlock));
-	if (!host) {
-		goto pci_disable_dev;
+	if(!host){
+    		goto pci_disable_dev;
 	}
 	error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
-	if (error) {
+	if(error){
 		error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
-		if (error) {
+		if(error){
 			printk(KERN_WARNING
 			       "scsi%d: No suitable DMA mask available\n",
 			       host->host_no);
@@ -596,53 +652,53 @@
 	bus = pdev->bus->number;
 	dev_fun = pdev->devfn;
 	acb = (struct AdapterControlBlock *) host->hostdata;
-	memset(acb, 0, sizeof(struct AdapterControlBlock));
+	memset(acb,0,sizeof(struct AdapterControlBlock));
 	acb->pdev = pdev;
 	acb->host = host;
 	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->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */
-	host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
+	host->max_id = ARCMSR_MAX_TARGETID;		/*16:8*/
+	host->max_cmd_len = 16;	 			/*this is issue of 64bit LBA ,over 2T byte*/
+	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;
 	pci_set_drvdata(pdev, host);
 	pci_set_master(pdev);
 	error = pci_request_regions(pdev, "arcmsr");
-	if (error) {
+	if(error){
 		goto scsi_host_release;
 	}
 	spin_lock_init(&acb->eh_lock);
 	spin_lock_init(&acb->ccblist_lock);
 	acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
-			   ACB_F_MESSAGE_RQBUFFER_CLEARED |
-			   ACB_F_MESSAGE_WQBUFFER_READED);
+			ACB_F_MESSAGE_RQBUFFER_CLEARED |
+			ACB_F_MESSAGE_WQBUFFER_READED);
 	acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
 	INIT_LIST_HEAD(&acb->ccb_free_list);
 	arcmsr_define_adapter_type(acb);
 	error = arcmsr_remap_pciregion(acb);
-	if (!error) {
+	if(!error){
 		goto pci_release_regs;
 	}
 	error = arcmsr_get_firmware_spec(acb);
-	if (!error) {
+	if(!error){
 		goto unmap_pci_region;
 	}
 	error = arcmsr_alloc_ccb_pool(acb);
-	if (error) {
+	if(error){
 		goto free_hbb_mu;
 	}
 	arcmsr_iop_init(acb);
 	error = scsi_add_host(host, &pdev->dev);
-	if (error) {
+	if(error){
 		goto RAID_controller_stop;
 	}
 	error = request_irq(pdev->irq, arcmsr_do_interrupt, IRQF_SHARED, "arcmsr", acb);
-	if (error) {
+	if(error){
 		goto scsi_host_remove;
 	}
 	host->irq = pdev->irq;
-	scsi_scan_host(host);
+    	scsi_scan_host(host);
 	INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
 	atomic_set(&acb->rq_map_token, 16);
 	atomic_set(&acb->ante_token_value, 16);
@@ -652,10 +708,10 @@
 	acb->eternal_timer.data = (unsigned long) acb;
 	acb->eternal_timer.function = &arcmsr_request_device_map;
 	add_timer(&acb->eternal_timer);
-	if (arcmsr_alloc_sysfs_attr(acb))
+	if(arcmsr_alloc_sysfs_attr(acb))
 		goto out_free_sysfs;
 	return 0;
- out_free_sysfs:
+out_free_sysfs:
 scsi_host_remove:
 	scsi_remove_host(host);
 RAID_controller_stop:
@@ -663,7 +719,7 @@
 	arcmsr_flush_adapter_cache(acb);
 	arcmsr_free_ccb_pool(acb);
 free_hbb_mu:
-	arcmsr_free_mu(acb);
+	arcmsr_free_hbb_mu(acb);
 unmap_pci_region:
 	arcmsr_unmap_pciregion(acb);
 pci_release_regs:
@@ -678,15 +734,14 @@
 static uint8_t arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
 {
 	struct MessageUnit_A __iomem *reg = acb->pmuA;
-
 	writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
-	if (arcmsr_hba_wait_msgint_ready(acb)) {
+	if (!arcmsr_hba_wait_msgint_ready(acb)) {
 		printk(KERN_NOTICE
 			"arcmsr%d: wait 'abort all outstanding command' timeout \n"
 			, acb->host->host_no);
-		return 0xff;
+		return false;
 	}
-	return 0x00;
+	return true;
 }
 
 static uint8_t arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
@@ -694,15 +749,27 @@
 	struct MessageUnit_B *reg = acb->pmuB;
 
 	writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell);
-	if (arcmsr_hbb_wait_msgint_ready(acb)) {
+	if (!arcmsr_hbb_wait_msgint_ready(acb)) {
 		printk(KERN_NOTICE
 			"arcmsr%d: wait 'abort all outstanding command' timeout \n"
 			, acb->host->host_no);
-		return 0xff;
+		return false;
 	}
-	return 0x00;
+	return true;
 }
-
+static uint8_t arcmsr_abort_hbc_allcmd(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
+	writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
+	writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
+	if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
+		printk(KERN_NOTICE
+			"arcmsr%d: wait 'abort all outstanding command' timeout \n"
+			, pACB->host->host_no);
+		return false;
+	}
+	return true;
+}
 static uint8_t arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
 {
 	uint8_t rtnval = 0;
@@ -715,6 +782,11 @@
 	case ACB_ADAPTER_TYPE_B: {
 		rtnval = arcmsr_abort_hbb_allcmd(acb);
 		}
+		break;
+
+	case ACB_ADAPTER_TYPE_C: {
+		rtnval = arcmsr_abort_hbc_allcmd(acb);
+		}
 	}
 	return rtnval;
 }
@@ -722,13 +794,12 @@
 static bool arcmsr_hbb_enable_driver_mode(struct AdapterControlBlock *pacb)
 {
 	struct MessageUnit_B *reg = pacb->pmuB;
-
 	writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell);
-	if (arcmsr_hbb_wait_msgint_ready(pacb)) {
+	if (!arcmsr_hbb_wait_msgint_ready(pacb)) {
 		printk(KERN_ERR "arcmsr%d: can't set driver mode. \n", pacb->host->host_no);
 		return false;
-}
-	return true;
+	}
+    	return true;
 }
 
 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
@@ -736,18 +807,16 @@
 	struct scsi_cmnd *pcmd = ccb->pcmd;
 
 	scsi_dma_unmap(pcmd);
-		}
+}
 
 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb)
 {
 	struct AdapterControlBlock *acb = ccb->acb;
 	struct scsi_cmnd *pcmd = ccb->pcmd;
 	unsigned long flags;
-
 	atomic_dec(&acb->ccboutstandingcount);
 	arcmsr_pci_unmap_dma(ccb);
 	ccb->startdone = ARCMSR_CCB_DONE;
-	ccb->ccb_flags = 0;
 	spin_lock_irqsave(&acb->ccblist_lock, flags);
 	list_add_tail(&ccb->list, &acb->ccb_free_list);
 	spin_unlock_irqrestore(&acb->ccblist_lock, flags);
@@ -759,7 +828,6 @@
 
 	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 =
@@ -775,8 +843,7 @@
 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
 {
 	u32 orig_mask = 0;
-	switch (acb->adapter_type) {
-
+	switch (acb->adapter_type) {	
 	case ACB_ADAPTER_TYPE_A : {
 		struct MessageUnit_A __iomem *reg = acb->pmuA;
 		orig_mask = readl(&reg->outbound_intmask);
@@ -784,30 +851,35 @@
 						&reg->outbound_intmask);
 		}
 		break;
-
 	case ACB_ADAPTER_TYPE_B : {
 		struct MessageUnit_B *reg = acb->pmuB;
 		orig_mask = readl(reg->iop2drv_doorbell_mask);
 		writel(0, reg->iop2drv_doorbell_mask);
 		}
 		break;
+	case ACB_ADAPTER_TYPE_C:{
+		struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
+		/* disable all outbound interrupt */
+		orig_mask = readl(&reg->host_int_mask); /* disable outbound message0 int */
+		writel(orig_mask|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
+		}
+		break;
 	}
 	return orig_mask;
 }
 
-static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb,
-			struct CommandControlBlock *ccb, uint32_t flag_ccb)
+static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb, 
+			struct CommandControlBlock *ccb, bool error)
 {
-
 	uint8_t id, lun;
 	id = ccb->pcmd->device->id;
 	lun = ccb->pcmd->device->lun;
-	if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) {
+	if (!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);
-	} else {
+	}else{
 		switch (ccb->arcmsr_cdb.DeviceStatus) {
 		case ARCMSR_DEV_SELECT_TIMEOUT: {
 			acb->devstate[id][lun] = ARECA_RAID_GONE;
@@ -833,42 +905,37 @@
 			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);
+			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);
 			break;
 		}
 	}
 }
 
-static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, uint32_t flag_ccb)
+static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, struct CommandControlBlock *pCCB, bool error)
 
 {
-	struct CommandControlBlock *ccb;
-	struct ARCMSR_CDB *arcmsr_cdb;
 	int id, lun;
-
-	arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
-	ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
-	if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
-		if (ccb->startdone == ARCMSR_CCB_ABORTED) {
-			struct scsi_cmnd *abortcmd = ccb->pcmd;
+	if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
+		if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
+			struct scsi_cmnd *abortcmd = pCCB->pcmd;
 			if (abortcmd) {
 				id = abortcmd->device->id;
-				lun = abortcmd->device->lun;
+				lun = abortcmd->device->lun;				
 				abortcmd->result |= DID_ABORT << 16;
-				arcmsr_ccb_complete(ccb);
-				printk(KERN_NOTICE "arcmsr%d: ccb ='0x%p' \
-				isr got aborted command \n", acb->host->host_no, ccb);
+				arcmsr_ccb_complete(pCCB);
+				printk(KERN_NOTICE "arcmsr%d: pCCB ='0x%p' isr got aborted command \n",
+				acb->host->host_no, pCCB);
 			}
+			return;
 		}
 		printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \
 				done acb = '0x%p'"
@@ -876,20 +943,22 @@
 				" ccboutstandingcount = %d \n"
 				, acb->host->host_no
 				, acb
-				, ccb
-				, ccb->acb
-				, ccb->startdone
+				, pCCB
+				, pCCB->acb
+				, pCCB->startdone
 				, atomic_read(&acb->ccboutstandingcount));
+		  return;
 		}
-	else
-	arcmsr_report_ccb_state(acb, ccb, flag_ccb);
+	arcmsr_report_ccb_state(acb, pCCB, error);
 }
 
 static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
 {
 	int i = 0;
 	uint32_t flag_ccb;
-
+	struct ARCMSR_CDB *pARCMSR_CDB;
+	bool error;
+	struct CommandControlBlock *pCCB;
 	switch (acb->adapter_type) {
 
 	case ACB_ADAPTER_TYPE_A: {
@@ -899,9 +968,12 @@
 					acb->outbound_int_enable;
 		/*clear and abort all outbound posted Q*/
 		writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
-		while (((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF)
+		while(((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF)
 				&& (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
-			arcmsr_drain_donequeue(acb, flag_ccb);
+			pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
+			pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
+			error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
+			arcmsr_drain_donequeue(acb, pCCB, error);
 		}
 		}
 		break;
@@ -909,17 +981,37 @@
 	case ACB_ADAPTER_TYPE_B: {
 		struct MessageUnit_B *reg = acb->pmuB;
 		/*clear all outbound posted Q*/
+		writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, &reg->iop2drv_doorbell); /* clear doorbell interrupt */
 		for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
 			if ((flag_ccb = readl(&reg->done_qbuffer[i])) != 0) {
 				writel(0, &reg->done_qbuffer[i]);
-				arcmsr_drain_donequeue(acb, flag_ccb);
+				pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
+				pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
+				error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
+				arcmsr_drain_donequeue(acb, pCCB, error);
 			}
-			writel(0, &reg->post_qbuffer[i]);
+			reg->post_qbuffer[i] = 0;
 		}
 		reg->doneq_index = 0;
 		reg->postq_index = 0;
 		}
 		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C *reg = acb->pmuC;
+		struct  ARCMSR_CDB *pARCMSR_CDB;
+		uint32_t flag_ccb, ccb_cdb_phy;
+		bool error;
+		struct CommandControlBlock *pCCB;
+		while ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
+			/*need to do*/
+			flag_ccb = readl(&reg->outbound_queueport_low);
+			ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
+			pARCMSR_CDB = (struct  ARCMSR_CDB *)(acb->vir2phy_offset+ccb_cdb_phy);/*frame must be 32 bytes aligned*/
+			pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
+			error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
+			arcmsr_drain_donequeue(acb, pCCB, error);
+		}
+	}
 	}
 }
 static void arcmsr_remove(struct pci_dev *pdev)
@@ -930,16 +1022,15 @@
 	int poll_count = 0;
 	arcmsr_free_sysfs_attr(acb);
 	scsi_remove_host(host);
-	scsi_host_put(host);
 	flush_scheduled_work();
 	del_timer_sync(&acb->eternal_timer);
 	arcmsr_disable_outbound_ints(acb);
 	arcmsr_stop_adapter_bgrb(acb);
-	arcmsr_flush_adapter_cache(acb);
+	arcmsr_flush_adapter_cache(acb);	
 	acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
 	acb->acb_flags &= ~ACB_F_IOP_INITED;
 
-	for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++) {
+	for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++){
 		if (!atomic_read(&acb->ccboutstandingcount))
 			break;
 		arcmsr_interrupt(acb);/* FIXME: need spinlock */
@@ -962,8 +1053,10 @@
 	}
 	free_irq(pdev->irq, acb);
 	arcmsr_free_ccb_pool(acb);
-	arcmsr_free_mu(acb);
+	arcmsr_free_hbb_mu(acb);
+	arcmsr_unmap_pciregion(acb);
 	pci_release_regions(pdev);
+	scsi_host_put(host);
 	pci_disable_device(pdev);
 	pci_set_drvdata(pdev, NULL);
 }
@@ -983,7 +1076,6 @@
 static int arcmsr_module_init(void)
 {
 	int error = 0;
-
 	error = pci_register_driver(&arcmsr_pci_driver);
 	return error;
 }
@@ -999,10 +1091,9 @@
 						u32 intmask_org)
 {
 	u32 mask;
-
 	switch (acb->adapter_type) {
 
-	case ACB_ADAPTER_TYPE_A : {
+	case ACB_ADAPTER_TYPE_A: {
 		struct MessageUnit_A __iomem *reg = acb->pmuA;
 		mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
 			     ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE|
@@ -1012,7 +1103,7 @@
 		}
 		break;
 
-	case ACB_ADAPTER_TYPE_B : {
+	case ACB_ADAPTER_TYPE_B: {
 		struct MessageUnit_B *reg = acb->pmuB;
 		mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK |
 			ARCMSR_IOP2DRV_DATA_READ_OK |
@@ -1021,6 +1112,13 @@
 		writel(mask, reg->iop2drv_doorbell_mask);
 		acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
 		}
+		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C *reg = acb->pmuC;
+		mask = ~(ARCMSR_HBCMU_UTILITY_A_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK|ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK);
+		writel(intmask_org & mask, &reg->host_int_mask);
+		acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
+		}
 	}
 }
 
@@ -1032,75 +1130,69 @@
 	__le32 address_lo, address_hi;
 	int arccdbsize = 0x30;
 	__le32 length = 0;
-	int i, cdb_sgcount = 0;
+	int i;
 	struct scatterlist *sg;
 	int nseg;
-
 	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 = 0;
 	memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
 
 	nseg = scsi_dma_map(pcmd);
-	if (nseg > acb->host->sg_tablesize || nseg < 0)
+	if (unlikely(nseg > acb->host->sg_tablesize || nseg < 0))
 		return FAILED;
-		/* map stor port SG list to our iop SG List. */
-		scsi_for_each_sg(pcmd, sg, nseg, i) {
-			/* Get the physical address of the current data pointer */
-			length = cpu_to_le32(sg_dma_len(sg));
-			address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
-			address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
-			if (address_hi == 0) {
-				struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
+	scsi_for_each_sg(pcmd, sg, nseg, i) {
+		/* Get the physical address of the current data pointer */
+		length = cpu_to_le32(sg_dma_len(sg));
+		address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
+		address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
+		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->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|cpu_to_le32(IS_SG64_ADDR);
-				psge += sizeof (struct SG64ENTRY);
-				arccdbsize += sizeof (struct SG64ENTRY);
-			}
-			cdb_sgcount++;
+			pdma_sg->addresshigh = address_hi;
+			pdma_sg->address = address_lo;
+			pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR);
+			psge += sizeof (struct SG64ENTRY);
+			arccdbsize += sizeof (struct SG64ENTRY);
 		}
-		arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount;
-		arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
-	arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 : 0);
-		if ( arccdbsize > 256)
-			arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
-	if (pcmd->cmnd[0]|WRITE_6 || pcmd->cmnd[0] | WRITE_10 || pcmd->cmnd[0]|WRITE_12) {
-		arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
-		ccb->ccb_flags |= CCB_FLAG_WRITE;
 	}
+	arcmsr_cdb->sgcount = (uint8_t)nseg;
+	arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
+	arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 : 0);
+	if ( arccdbsize > 256)
+		arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
+	if (pcmd->cmnd[0]|WRITE_6 || pcmd->cmnd[0]|WRITE_10 || pcmd->cmnd[0]|WRITE_12 ){
+		arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
+	}
+	ccb->arc_cdb_size = arccdbsize;
 	return SUCCESS;
 }
 
 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
 {
-	uint32_t shifted_cdb_phyaddr = ccb->shifted_cdb_phyaddr;
+	uint32_t cdb_phyaddr_pattern = ccb->cdb_phyaddr_pattern;
 	struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
 	atomic_inc(&acb->ccboutstandingcount);
 	ccb->startdone = ARCMSR_CCB_START;
-
 	switch (acb->adapter_type) {
 	case ACB_ADAPTER_TYPE_A: {
 		struct MessageUnit_A __iomem *reg = acb->pmuA;
 
 		if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
-			writel(shifted_cdb_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
+			writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
 			&reg->inbound_queueport);
 		else {
-				writel(shifted_cdb_phyaddr, &reg->inbound_queueport);
+				writel(cdb_phyaddr_pattern, &reg->inbound_queueport);
 		}
 		}
 		break;
@@ -1112,11 +1204,10 @@
 		ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
 		writel(0, &reg->post_qbuffer[ending_index]);
 		if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
-			writel(shifted_cdb_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
+			writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
 						 &reg->post_qbuffer[index]);
-		}
-		else {
-			writel(shifted_cdb_phyaddr, &reg->post_qbuffer[index]);
+		} else {
+			writel(cdb_phyaddr_pattern, &reg->post_qbuffer[index]);
 		}
 		index++;
 		index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
@@ -1124,6 +1215,19 @@
 		writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell);
 		}
 		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
+		uint32_t ccb_post_stamp, arc_cdb_size;
+
+		arc_cdb_size = (ccb->arc_cdb_size > 0x300) ? 0x300 : ccb->arc_cdb_size;
+		ccb_post_stamp = (cdb_phyaddr_pattern | ((arc_cdb_size - 1) >> 6) | 1);
+		if (acb->cdb_phyaddr_hi32) {
+			writel(acb->cdb_phyaddr_hi32, &phbcmu->inbound_queueport_high);
+			writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
+		} else {
+			writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
+		}
+		}
 	}
 }
 
@@ -1132,8 +1236,7 @@
 	struct MessageUnit_A __iomem *reg = acb->pmuA;
 	acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
 	writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
-
-	if (arcmsr_hba_wait_msgint_ready(acb)) {
+	if (!arcmsr_hba_wait_msgint_ready(acb)) {
 		printk(KERN_NOTICE
 			"arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
 			, acb->host->host_no);
@@ -1146,13 +1249,26 @@
 	acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
 	writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell);
 
-	if (arcmsr_hbb_wait_msgint_ready(acb)) {
+	if (!arcmsr_hbb_wait_msgint_ready(acb)) {
 		printk(KERN_NOTICE
 			"arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
 			, acb->host->host_no);
 	}
 }
 
+static void arcmsr_stop_hbc_bgrb(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
+	pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
+	writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
+	writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
+	if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
+		printk(KERN_NOTICE
+			"arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
+			, pACB->host->host_no);
+	}
+	return;
+}
 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
 {
 	switch (acb->adapter_type) {
@@ -1165,21 +1281,15 @@
 		arcmsr_stop_hbb_bgrb(acb);
 		}
 		break;
+	case ACB_ADAPTER_TYPE_C: {
+		arcmsr_stop_hbc_bgrb(acb);
+		}
 	}
 }
 
 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
 {
-	switch (acb->adapter_type) {
-	case ACB_ADAPTER_TYPE_A: {
-		dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
-		iounmap(acb->pmuA);
-	}
-		break;
-	case ACB_ADAPTER_TYPE_B: {
-		dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
-	}
-	}
+	dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
 }
 
 void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
@@ -1196,6 +1306,10 @@
 		writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
 		}
 		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C __iomem *reg = acb->pmuC;
+		writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
+		}
 	}
 }
 
@@ -1221,13 +1335,21 @@
 		writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell);
 		}
 		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C __iomem *reg = acb->pmuC;
+		/*
+		** push inbound doorbell tell iop, driver data write ok
+		** and wait reply on next hwinterrupt for next Qbuffer post
+		*/
+		writel(ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK, &reg->inbound_doorbell);
+		}
+		break;
 	}
 }
 
 struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
 {
 	struct QBUFFER __iomem *qbuffer = NULL;
-
 	switch (acb->adapter_type) {
 
 	case ACB_ADAPTER_TYPE_A: {
@@ -1241,6 +1363,10 @@
 		qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
 		}
 		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
+		qbuffer = (struct QBUFFER __iomem *)&phbcmu->message_rbuffer;
+		}
 	}
 	return qbuffer;
 }
@@ -1248,7 +1374,6 @@
 static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
 {
 	struct QBUFFER __iomem *pqbuffer = NULL;
-
 	switch (acb->adapter_type) {
 
 	case ACB_ADAPTER_TYPE_A: {
@@ -1262,6 +1387,11 @@
 		pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
 		}
 		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
+		pqbuffer = (struct QBUFFER __iomem *)&reg->message_wbuffer;
+	}
+
 	}
 	return pqbuffer;
 }
@@ -1272,19 +1402,18 @@
 	struct QBUFFER *pQbuffer;
 	uint8_t __iomem *iop_data;
 	int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
-
 	rqbuf_lastindex = acb->rqbuf_lastindex;
 	rqbuf_firstindex = acb->rqbuf_firstindex;
 	prbuffer = arcmsr_get_iop_rqbuffer(acb);
 	iop_data = (uint8_t __iomem *)prbuffer->data;
 	iop_len = prbuffer->data_len;
-	my_empty_len = (rqbuf_firstindex - rqbuf_lastindex -1)&(ARCMSR_MAX_QBUFFER -1);
+	my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1) & (ARCMSR_MAX_QBUFFER - 1);
 
 	if (my_empty_len >= iop_len)
 	{
 		while (iop_len > 0) {
 			pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex];
-			memcpy(pQbuffer, iop_data,1);
+			memcpy(pQbuffer, iop_data, 1);
 			rqbuf_lastindex++;
 			rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
 			iop_data++;
@@ -1335,25 +1464,52 @@
 {
 	uint32_t outbound_doorbell;
 	struct MessageUnit_A __iomem *reg = acb->pmuA;
-
 	outbound_doorbell = readl(&reg->outbound_doorbell);
 	writel(outbound_doorbell, &reg->outbound_doorbell);
 	if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
 		arcmsr_iop2drv_data_wrote_handle(acb);
 	}
 
-	if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) 	{
+	if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
 		arcmsr_iop2drv_data_read_handle(acb);
 	}
 }
-
+static void arcmsr_hbc_doorbell_isr(struct AdapterControlBlock *pACB)
+{
+	uint32_t outbound_doorbell;
+	struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
+	/*
+	*******************************************************************
+	**  Maybe here we need to check wrqbuffer_lock is lock or not
+	**  DOORBELL: din! don!
+	**  check if there are any mail need to pack from firmware
+	*******************************************************************
+	*/
+	outbound_doorbell = readl(&reg->outbound_doorbell);
+	writel(outbound_doorbell, &reg->outbound_doorbell_clear);/*clear interrupt*/
+	if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK) {
+		arcmsr_iop2drv_data_wrote_handle(pACB);
+	}
+	if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK) {
+		arcmsr_iop2drv_data_read_handle(pACB);
+	}
+	if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
+		arcmsr_hbc_message_isr(pACB);    /* messenger of "driver to iop commands" */
+	}
+	return;
+}
 static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb)
 {
 	uint32_t flag_ccb;
 	struct MessageUnit_A __iomem *reg = acb->pmuA;
-
+	struct ARCMSR_CDB *pARCMSR_CDB;
+	struct CommandControlBlock *pCCB;
+	bool error;
 	while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
-		arcmsr_drain_donequeue(acb, flag_ccb);
+		pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
+		pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
+		error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
+		arcmsr_drain_donequeue(acb, pCCB, error);
 	}
 }
 
@@ -1362,29 +1518,62 @@
 	uint32_t index;
 	uint32_t flag_ccb;
 	struct MessageUnit_B *reg = acb->pmuB;
-
+	struct ARCMSR_CDB *pARCMSR_CDB;
+	struct CommandControlBlock *pCCB;
+	bool error;
 	index = reg->doneq_index;
-
 	while ((flag_ccb = readl(&reg->done_qbuffer[index])) != 0) {
 		writel(0, &reg->done_qbuffer[index]);
-		arcmsr_drain_donequeue(acb, flag_ccb);
+		pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
+		pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
+		error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
+		arcmsr_drain_donequeue(acb, pCCB, error);
 		index++;
 		index %= ARCMSR_MAX_HBB_POSTQUEUE;
 		reg->doneq_index = index;
 	}
 }
+
+static void arcmsr_hbc_postqueue_isr(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_C *phbcmu;
+	struct ARCMSR_CDB *arcmsr_cdb;
+	struct CommandControlBlock *ccb;
+	uint32_t flag_ccb, ccb_cdb_phy, throttling = 0;
+	int error;
+
+	phbcmu = (struct MessageUnit_C *)acb->pmuC;
+	/* areca cdb command done */
+	/* Use correct offset and size for syncing */
+
+	while (readl(&phbcmu->host_int_status) &
+	ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR){
+	/* check if command done with no error*/
+	flag_ccb = readl(&phbcmu->outbound_queueport_low);
+	ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);/*frame must be 32 bytes aligned*/
+	arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
+	ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
+	error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
+	/* check if command done with no error */
+	arcmsr_drain_donequeue(acb, ccb, error);
+	if (throttling == ARCMSR_HBC_ISR_THROTTLING_LEVEL) {
+		writel(ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING, &phbcmu->inbound_doorbell);
+		break;
+	}
+	throttling++;
+	}
+}
 /*
 **********************************************************************************
 ** Handle a message interrupt
 **
-** The only message interrupt we expect is in response to a query for the current adapter config.
+** The only message interrupt we expect is in response to a query for the current adapter config.  
 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
 **********************************************************************************
 */
 static void arcmsr_hba_message_isr(struct AdapterControlBlock *acb)
 {
 	struct MessageUnit_A *reg  = acb->pmuA;
-
 	/*clear interrupt and message state*/
 	writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, &reg->outbound_intstatus);
 	schedule_work(&acb->arcmsr_do_message_isr_bh);
@@ -1397,13 +1586,29 @@
 	writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
 	schedule_work(&acb->arcmsr_do_message_isr_bh);
 }
+/*
+**********************************************************************************
+** Handle a message interrupt
+**
+** The only message interrupt we expect is in response to a query for the
+** current adapter config.
+** We want this in order to compare the drivemap so that we can detect newly-attached drives.
+**********************************************************************************
+*/
+static void arcmsr_hbc_message_isr(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_C *reg  = acb->pmuC;
+	/*clear interrupt and message state*/
+	writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);
+	schedule_work(&acb->arcmsr_do_message_isr_bh);
+}
+
 static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb)
 {
 	uint32_t outbound_intstatus;
 	struct MessageUnit_A __iomem *reg = acb->pmuA;
-
 	outbound_intstatus = readl(&reg->outbound_intstatus) &
-							acb->outbound_int_enable;
+		acb->outbound_int_enable;
 	if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))	{
 		return 1;
 	}
@@ -1414,7 +1619,7 @@
 	if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
 		arcmsr_hba_postqueue_isr(acb);
 	}
-	if (outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT) 	{
+	if(outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT) 	{
 		/* messenger of "driver to iop commands" */
 		arcmsr_hba_message_isr(acb);
 	}
@@ -1425,9 +1630,8 @@
 {
 	uint32_t outbound_doorbell;
 	struct MessageUnit_B *reg = acb->pmuB;
-
 	outbound_doorbell = readl(reg->iop2drv_doorbell) &
-							acb->outbound_int_enable;
+				acb->outbound_int_enable;
 	if (!outbound_doorbell)
 		return 1;
 
@@ -1436,7 +1640,7 @@
 	this action can push HW to write down the clear bit*/
 	readl(reg->iop2drv_doorbell);
 	writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
-	if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) 	{
+	if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {
 		arcmsr_iop2drv_data_wrote_handle(acb);
 	}
 	if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) {
@@ -1445,14 +1649,37 @@
 	if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) {
 		arcmsr_hbb_postqueue_isr(acb);
 	}
-	if (outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
+	if(outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
 		/* messenger of "driver to iop commands" */
 		arcmsr_hbb_message_isr(acb);
 	}
-
 	return 0;
 }
 
+static int arcmsr_handle_hbc_isr(struct AdapterControlBlock *pACB)
+{
+	uint32_t host_interrupt_status;
+	struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
+	/*
+	*********************************************
+	**   check outbound intstatus
+	*********************************************
+	*/
+	host_interrupt_status = readl(&phbcmu->host_int_status);
+	if (!host_interrupt_status) {
+		/*it must be share irq*/
+		return 1;
+	}
+	/* MU ioctl transfer doorbell interrupts*/
+	if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR) {
+		arcmsr_hbc_doorbell_isr(pACB);   /* messenger of "ioctl message read write" */
+	}
+	/* MU post queue interrupts*/
+	if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) {
+		arcmsr_hbc_postqueue_isr(pACB);  /* messenger of "scsi commands" */
+	}
+	return 0;
+}
 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
 {
 	switch (acb->adapter_type) {
@@ -1469,6 +1696,11 @@
 		}
 		}
 		break;
+	 case ACB_ADAPTER_TYPE_C: {
+		if (arcmsr_handle_hbc_isr(acb)) {
+			return IRQ_NONE;
+		}
+		}
 	}
 	return IRQ_HANDLED;
 }
@@ -1495,7 +1727,6 @@
 	struct QBUFFER __iomem *pwbuffer;
 	uint8_t __iomem *iop_data;
 	int32_t allxfer_len = 0;
-
 	pwbuffer = arcmsr_get_iop_wqbuffer(acb);
 	iop_data = (uint8_t __iomem *)pwbuffer->data;
 	if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
@@ -1528,7 +1759,6 @@
 						(uint32_t ) cmd->cmnd[7] << 8  |
 						(uint32_t ) cmd->cmnd[8];
 						/* 4 bytes: Areca io control code */
-
 	sg = scsi_sglist(cmd);
 	buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
 	if (scsi_sg_count(cmd) > 1) {
@@ -1554,7 +1784,7 @@
 			retvalue = ARCMSR_MESSAGE_FAIL;
 			goto message_out;
 		}
-
+				
 		ptmpQbuffer = ver_addr;
 		while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
 			&& (allxfer_len < 1031)) {
@@ -1586,10 +1816,10 @@
 		}
 		memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len);
 		pcmdmessagefld->cmdmessage.Length = allxfer_len;
-		if (acb->fw_flag == FW_DEADLOCK) {
+		if(acb->fw_flag == FW_DEADLOCK) {
 			pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
-		} else {
-		pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
+		}else{
+			pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
 		}
 		kfree(ver_addr);
 		}
@@ -1605,11 +1835,11 @@
 			retvalue = ARCMSR_MESSAGE_FAIL;
 			goto message_out;
 		}
-		if (acb->fw_flag == FW_DEADLOCK) {
-			pcmdmessagefld->cmdmessage.ReturnCode =
+		if(acb->fw_flag == FW_DEADLOCK) {
+			pcmdmessagefld->cmdmessage.ReturnCode = 
 			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
-		} else {
-			pcmdmessagefld->cmdmessage.ReturnCode =
+		}else{
+			pcmdmessagefld->cmdmessage.ReturnCode = 
 			ARCMSR_MESSAGE_RETURNCODE_OK;
 		}
 		ptmpuserbuffer = ver_addr;
@@ -1672,10 +1902,10 @@
 		acb->rqbuf_firstindex = 0;
 		acb->rqbuf_lastindex = 0;
 		memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
-		if (acb->fw_flag == FW_DEADLOCK) {
+		if(acb->fw_flag == FW_DEADLOCK) {
 			pcmdmessagefld->cmdmessage.ReturnCode =
 			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
-		} else {
+		}else{
 			pcmdmessagefld->cmdmessage.ReturnCode =
 			ARCMSR_MESSAGE_RETURNCODE_OK;
 		}
@@ -1684,10 +1914,10 @@
 
 	case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
 		uint8_t *pQbuffer = acb->wqbuffer;
-		if (acb->fw_flag == FW_DEADLOCK) {
+		if(acb->fw_flag == FW_DEADLOCK) {
 			pcmdmessagefld->cmdmessage.ReturnCode =
 			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
-		} else {
+		}else{
 			pcmdmessagefld->cmdmessage.ReturnCode =
 			ARCMSR_MESSAGE_RETURNCODE_OK;
 		}
@@ -1724,10 +1954,10 @@
 		memset(pQbuffer, 0, sizeof(struct QBUFFER));
 		pQbuffer = acb->wqbuffer;
 		memset(pQbuffer, 0, sizeof(struct QBUFFER));
-		if (acb->fw_flag == FW_DEADLOCK) {
+		if(acb->fw_flag == FW_DEADLOCK) {
 			pcmdmessagefld->cmdmessage.ReturnCode =
 			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
-		} else {
+		}else{
 			pcmdmessagefld->cmdmessage.ReturnCode =
 			ARCMSR_MESSAGE_RETURNCODE_OK;
 		}
@@ -1735,10 +1965,10 @@
 		break;
 
 	case ARCMSR_MESSAGE_RETURN_CODE_3F: {
-		if (acb->fw_flag == FW_DEADLOCK) {
+		if(acb->fw_flag == FW_DEADLOCK) {
 			pcmdmessagefld->cmdmessage.ReturnCode =
 			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
-		} else {
+		}else{
 			pcmdmessagefld->cmdmessage.ReturnCode =
 			ARCMSR_MESSAGE_RETURNCODE_3F;
 		}
@@ -1746,10 +1976,10 @@
 		}
 	case ARCMSR_MESSAGE_SAY_HELLO: {
 		int8_t *hello_string = "Hello! I am ARCMSR";
-		if (acb->fw_flag == FW_DEADLOCK) {
+		if(acb->fw_flag == FW_DEADLOCK) {
 			pcmdmessagefld->cmdmessage.ReturnCode =
 			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
-		} else {
+		}else{
 			pcmdmessagefld->cmdmessage.ReturnCode =
 			ARCMSR_MESSAGE_RETURNCODE_OK;
 		}
@@ -1759,7 +1989,7 @@
 		break;
 
 	case ARCMSR_MESSAGE_SAY_GOODBYE:
-		if (acb->fw_flag == FW_DEADLOCK) {
+		if(acb->fw_flag == FW_DEADLOCK) {
 			pcmdmessagefld->cmdmessage.ReturnCode =
 			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
 		}
@@ -1767,7 +1997,7 @@
 		break;
 
 	case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
-		if (acb->fw_flag == FW_DEADLOCK) {
+		if(acb->fw_flag == FW_DEADLOCK) {
 			pcmdmessagefld->cmdmessage.ReturnCode =
 			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
 		}
@@ -1792,7 +2022,7 @@
 	if (!list_empty(head)) {
 		ccb = list_entry(head->next, struct CommandControlBlock, list);
 		list_del_init(&ccb->list);
-	} else {
+	}else{
 		spin_unlock_irqrestore(&acb->ccblist_lock, flags);
 		return 0;
 	}
@@ -1862,29 +2092,29 @@
 	cmd->scsi_done = done;
 	cmd->host_scribble = NULL;
 	cmd->result = 0;
-
-	if ((scsicmd == SYNCHRONIZE_CACHE) || (scsicmd == SEND_DIAGNOSTIC)) {
-		if (acb->devstate[target][lun] == ARECA_RAID_GONE) {
-			cmd->result = (DID_NO_CONNECT << 16);
+	if ((scsicmd == SYNCHRONIZE_CACHE) ||(scsicmd == SEND_DIAGNOSTIC)){
+		if(acb->devstate[target][lun] == ARECA_RAID_GONE) {
+    			cmd->result = (DID_NO_CONNECT << 16);
 		}
 		cmd->scsi_done(cmd);
 		return 0;
 	}
-
 	if (target == 16) {
 		/* virtual device for iop message transfer */
 		arcmsr_handle_virtual_command(acb, cmd);
 		return 0;
 	}
-
 	if (atomic_read(&acb->ccboutstandingcount) >=
 			ARCMSR_MAX_OUTSTANDING_CMD)
 		return SCSI_MLQUEUE_HOST_BUSY;
-
+	if ((scsicmd == SCSI_CMD_ARECA_SPECIFIC)) {
+		printk(KERN_NOTICE "Receiveing SCSI_CMD_ARECA_SPECIFIC command..\n");
+		return 0;
+	}
 	ccb = arcmsr_get_freeccb(acb);
 	if (!ccb)
 		return SCSI_MLQUEUE_HOST_BUSY;
-	if ( arcmsr_build_ccb( acb, ccb, cmd ) == FAILED ) {
+	if (arcmsr_build_ccb( acb, ccb, cmd ) == FAILED) {
 		cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
 		cmd->scsi_done(cmd);
 		return 0;
@@ -1901,17 +2131,16 @@
 	char *acb_device_map = acb->device_map;
 	char __iomem *iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);
 	char __iomem *iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);
-	char __iomem *iop_device_map = (char __iomem *) (&reg->message_rwbuffer[21]);
+	char __iomem *iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);
 	int count;
-
 	writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
-	if (arcmsr_hba_wait_msgint_ready(acb)) {
+	if (!arcmsr_hba_wait_msgint_ready(acb)) {
 		printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
 			miscellaneous data' timeout \n", acb->host->host_no);
 		return false;
 	}
 	count = 8;
-	while (count) {
+	while (count){
 		*acb_firm_model = readb(iop_firm_model);
 		acb_firm_model++;
 		iop_firm_model++;
@@ -1919,25 +2148,25 @@
 	}
 
 	count = 16;
-	while (count) {
+	while (count){
 		*acb_firm_version = readb(iop_firm_version);
 		acb_firm_version++;
 		iop_firm_version++;
 		count--;
 	}
 
-		count = 16;
-		while (count) {
-			*acb_device_map = readb(iop_device_map);
-			acb_device_map++;
-			iop_device_map++;
-			count--;
-		}
-	printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
+	count=16;
+	while(count){
+		*acb_device_map = readb(iop_device_map);
+		acb_device_map++;
+		iop_device_map++;
+		count--;
+	}
+	printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n", 
 		acb->host->host_no,
 		acb->firm_version,
 		acb->firm_model);
-		acb->signature = readl(&reg->message_rwbuffer[0]);
+	acb->signature = readl(&reg->message_rwbuffer[0]);
 	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]);
@@ -1962,14 +2191,14 @@
 	/*firm_version,21,84-99*/
 	int count;
 	dma_coherent = dma_alloc_coherent(&pdev->dev, sizeof(struct MessageUnit_B), &dma_coherent_handle, GFP_KERNEL);
-	if (!dma_coherent) {
+	if (!dma_coherent){
 		printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error for hbb mu\n", acb->host->host_no);
 		return false;
 	}
 	acb->dma_coherent_handle_hbb_mu = dma_coherent_handle;
 	reg = (struct MessageUnit_B *)dma_coherent;
 	acb->pmuB = reg;
-	reg->drv2iop_doorbell = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL);
+	reg->drv2iop_doorbell= (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL);
 	reg->drv2iop_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL_MASK);
 	reg->iop2drv_doorbell = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL);
 	reg->iop2drv_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL_MASK);
@@ -1981,12 +2210,87 @@
 	iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);	/*firm_version,21,84-99*/
 
 	writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
-	if (arcmsr_hbb_wait_msgint_ready(acb)) {
+	if (!arcmsr_hbb_wait_msgint_ready(acb)) {
 		printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
 			miscellaneous data' timeout \n", acb->host->host_no);
 		return false;
 	}
 	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--;
+	}
+
+	count = 16;
+	while(count){
+		*acb_device_map = readb(iop_device_map);
+		acb_device_map++;
+		iop_device_map++;
+		count--;
+	}
+	
+	printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
+		acb->host->host_no,
+		acb->firm_version,
+		acb->firm_model);
+
+	acb->signature = readl(&reg->message_rwbuffer[1]);
+	/*firm_signature,1,00-03*/
+	acb->firm_request_len = readl(&reg->message_rwbuffer[2]);
+	/*firm_request_len,1,04-07*/
+	acb->firm_numbers_queue = readl(&reg->message_rwbuffer[3]);
+	/*firm_numbers_queue,2,08-11*/
+	acb->firm_sdram_size = readl(&reg->message_rwbuffer[4]);
+	/*firm_sdram_size,3,12-15*/
+	acb->firm_hd_channels = readl(&reg->message_rwbuffer[5]);
+	/*firm_ide_channels,4,16-19*/
+	acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
+	/*firm_ide_channels,4,16-19*/
+	return true;
+}
+
+static bool arcmsr_get_hbc_config(struct AdapterControlBlock *pACB)
+{
+	uint32_t intmask_org, Index, firmware_state = 0;
+	struct MessageUnit_C *reg = pACB->pmuC;
+	char *acb_firm_model = pACB->firm_model;
+	char *acb_firm_version = pACB->firm_version;
+	char *iop_firm_model = (char *)(&reg->msgcode_rwbuffer[15]);    /*firm_model,15,60-67*/
+	char *iop_firm_version = (char *)(&reg->msgcode_rwbuffer[17]);  /*firm_version,17,68-83*/
+	int count;
+	/* disable all outbound interrupt */
+	intmask_org = readl(&reg->host_int_mask); /* disable outbound message0 int */
+	writel(intmask_org|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
+	/* wait firmware ready */
+	do {
+		firmware_state = readl(&reg->outbound_msgaddr1);
+	} while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
+	/* post "get config" instruction */
+	writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
+	writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
+	/* wait message ready */
+	for (Index = 0; Index < 2000; Index++) {
+		if (readl(&reg->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
+			writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);/*clear interrupt*/
+			break;
+		}
+		udelay(10);
+	} /*max 1 seconds*/
+	if (Index >= 2000) {
+		printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
+			miscellaneous data' timeout \n", pACB->host->host_no);
+		return false;
+	}
+	count = 8;
 	while (count) {
 		*acb_firm_model = readb(iop_firm_model);
 		acb_firm_model++;
@@ -2000,40 +2304,26 @@
 		iop_firm_version++;
 		count--;
 	}
-
-		count = 16;
-		while (count) {
-			*acb_device_map = readb(iop_device_map);
-			acb_device_map++;
-			iop_device_map++;
-			count--;
-		}
-
 	printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
-			acb->host->host_no,
-		acb->firm_version,
-		acb->firm_model);
-
-	acb->signature = readl(&reg->message_rwbuffer[1]);
-		/*firm_signature,1,00-03*/
-	acb->firm_request_len = readl(&reg->message_rwbuffer[2]);
-	/*firm_request_len,1,04-07*/
-	acb->firm_numbers_queue = readl(&reg->message_rwbuffer[3]);
-	/*firm_numbers_queue,2,08-11*/
-	acb->firm_sdram_size = readl(&reg->message_rwbuffer[4]);
-	/*firm_sdram_size,3,12-15*/
-	acb->firm_hd_channels = readl(&reg->message_rwbuffer[5]);
-	/*firm_ide_channels,4,16-19*/
-	acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
-	/*firm_ide_channels,4,16-19*/
+		pACB->host->host_no,
+		pACB->firm_version,
+		pACB->firm_model);
+	pACB->firm_request_len = readl(&reg->msgcode_rwbuffer[1]);   /*firm_request_len,1,04-07*/
+	pACB->firm_numbers_queue = readl(&reg->msgcode_rwbuffer[2]); /*firm_numbers_queue,2,08-11*/
+	pACB->firm_sdram_size = readl(&reg->msgcode_rwbuffer[3]);    /*firm_sdram_size,3,12-15*/
+	pACB->firm_hd_channels = readl(&reg->msgcode_rwbuffer[4]);  /*firm_ide_channels,4,16-19*/
+	pACB->firm_cfg_version = readl(&reg->msgcode_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
+	/*all interrupt service will be enable at arcmsr_iop_init*/
 	return true;
 }
 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
 {
 	if (acb->adapter_type == ACB_ADAPTER_TYPE_A)
 		return arcmsr_get_hba_config(acb);
-	else
+	else if (acb->adapter_type == ACB_ADAPTER_TYPE_B)
 		return arcmsr_get_hbb_config(acb);
+	else
+		return arcmsr_get_hbc_config(acb);
 }
 
 static int arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb,
@@ -2044,18 +2334,19 @@
 	struct ARCMSR_CDB *arcmsr_cdb;
 	uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
 	int rtn;
-
+	bool error;
 	polling_hba_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) {
+			if (poll_ccb_done){
 				rtn = SUCCESS;
 				break;
-			} else {
-				if (poll_count > 100) {
+			}else {
+				msleep(25);
+				if (poll_count > 100){
 					rtn = FAILED;
 					break;
 				}
@@ -2084,76 +2375,132 @@
 				, ccb
 				, atomic_read(&acb->ccboutstandingcount));
 			continue;
-		} else {
-		arcmsr_report_ccb_state(acb, ccb, flag_ccb);
+		}
+		error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
+		arcmsr_report_ccb_state(acb, ccb, error);
 	}
-}
 	return rtn;
 }
 
 static int arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb,
 					struct CommandControlBlock *poll_ccb)
 {
-		struct MessageUnit_B *reg = acb->pmuB;
+	struct MessageUnit_B *reg = acb->pmuB;
 	struct ARCMSR_CDB *arcmsr_cdb;
-		struct CommandControlBlock *ccb;
-		uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
+	struct CommandControlBlock *ccb;
+	uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
 	int index, rtn;
-
+	bool error;
 	polling_hbb_ccb_retry:
-		poll_count++;
-		/* clear doorbell interrupt */
+	poll_count++;
+	/* clear doorbell interrupt */
 	writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
-		while (1) {
-			index = reg->doneq_index;
-			if ((flag_ccb = readl(&reg->done_qbuffer[index])) == 0) {
-			if (poll_ccb_done) {
+	while(1){
+		index = reg->doneq_index;
+		if ((flag_ccb = readl(&reg->done_qbuffer[index])) == 0) {
+			if (poll_ccb_done){
 				rtn = SUCCESS;
-					break;
-			} else {
-					msleep(25);
-				if (poll_count > 100) {
+				break;
+			}else {
+				msleep(25);
+				if (poll_count > 100){
 					rtn = FAILED;
-						break;
+					break;
 				}
-					goto polling_hbb_ccb_retry;
-				}
+				goto polling_hbb_ccb_retry;
 			}
-			writel(0, &reg->done_qbuffer[index]);
-			index++;
-			/*if last index number set it to 0 */
-			index %= ARCMSR_MAX_HBB_POSTQUEUE;
-			reg->doneq_index = index;
-			/* check ifcommand done with no error*/
+		}
+		writel(0, &reg->done_qbuffer[index]);
+		index++;
+		/*if last index number set it to 0 */
+		index %= ARCMSR_MAX_HBB_POSTQUEUE;
+		reg->doneq_index = index;
+		/* check if command done with no error*/
 		arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
 		ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
-			poll_ccb_done = (ccb == poll_ccb) ? 1:0;
-			if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
-				if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
+		poll_ccb_done = (ccb == poll_ccb) ? 1:0;
+		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;
+					,acb->host->host_no
+					,ccb->pcmd->device->id
+					,ccb->pcmd->device->lun
+					,ccb);
+				ccb->pcmd->result = DID_ABORT << 16;
 				arcmsr_ccb_complete(ccb);
-					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;
-		} else {
-			arcmsr_report_ccb_state(acb, ccb, flag_ccb);
-		}
-		}	/*drain reply FIFO*/
+			}
+			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;
+		} 
+		error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
+		arcmsr_report_ccb_state(acb, ccb, error);
+	}
 	return rtn;
 }
 
+static int arcmsr_polling_hbc_ccbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_ccb)
+{
+	struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
+	uint32_t flag_ccb, ccb_cdb_phy;
+	struct ARCMSR_CDB *arcmsr_cdb;
+	bool error;
+	struct CommandControlBlock *pCCB;
+	uint32_t poll_ccb_done = 0, poll_count = 0;
+	int rtn;
+polling_hbc_ccb_retry:
+	poll_count++;
+	while (1) {
+		if ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) == 0) {
+			if (poll_ccb_done) {
+				rtn = SUCCESS;
+				break;
+			} else {
+				msleep(25);
+				if (poll_count > 100) {
+					rtn = FAILED;
+					break;
+				}
+				goto polling_hbc_ccb_retry;
+			}
+		}
+		flag_ccb = readl(&reg->outbound_queueport_low);
+		ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
+		arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);/*frame must be 32 bytes aligned*/
+		pCCB = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
+		poll_ccb_done = (pCCB == poll_ccb) ? 1 : 0;
+		/* check ifcommand done with no error*/
+		if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
+			if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
+				printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
+					" poll command abort successfully \n"
+					, acb->host->host_no
+					, pCCB->pcmd->device->id
+					, pCCB->pcmd->device->lun
+					, pCCB);
+					pCCB->pcmd->result = DID_ABORT << 16;
+					arcmsr_ccb_complete(pCCB);
+				continue;
+			}
+			printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
+				" command done ccb = '0x%p'"
+				"ccboutstandingcount = %d \n"
+				, acb->host->host_no
+				, pCCB
+				, atomic_read(&acb->ccboutstandingcount));
+			continue;
+		}
+		error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
+		arcmsr_report_ccb_state(acb, pCCB, error);
+	}
+	return rtn;
+}
 static int arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
 					struct CommandControlBlock *poll_ccb)
 {
@@ -2168,6 +2515,10 @@
 	case ACB_ADAPTER_TYPE_B: {
 		rtn = arcmsr_polling_hbb_ccbdone(acb, poll_ccb);
 		}
+		break;
+	case ACB_ADAPTER_TYPE_C: {
+		rtn = arcmsr_polling_hbc_ccbdone(acb, poll_ccb);
+		}
 	}
 	return rtn;
 }
@@ -2185,6 +2536,7 @@
 	dma_coherent_handle = acb->dma_coherent_handle;
 	cdb_phyaddr = (uint32_t)(dma_coherent_handle);
 	cdb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16);
+	acb->cdb_phyaddr_hi32 = cdb_phyaddr_hi32;
 	/*
 	***********************************************************************
 	**    if adapter type B, set window of "post command Q"
@@ -2202,7 +2554,7 @@
 			writel(cdb_phyaddr_hi32, &reg->message_rwbuffer[1]);
 			writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \
 							&reg->inbound_msgaddr0);
-			if (arcmsr_hba_wait_msgint_ready(acb)) {
+			if (!arcmsr_hba_wait_msgint_ready(acb)) {
 				printk(KERN_NOTICE "arcmsr%d: ""set ccb high \
 				part physical address timeout\n",
 				acb->host->host_no);
@@ -2223,7 +2575,7 @@
 		reg->postq_index = 0;
 		reg->doneq_index = 0;
 		writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell);
-		if (arcmsr_hbb_wait_msgint_ready(acb)) {
+		if (!arcmsr_hbb_wait_msgint_ready(acb)) {
 			printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \
 				acb->host->host_no);
 			return 1;
@@ -2242,7 +2594,7 @@
 		writel(1056, rwbuffer);
 
 		writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell);
-		if (arcmsr_hbb_wait_msgint_ready(acb)) {
+		if (!arcmsr_hbb_wait_msgint_ready(acb)) {
 			printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
 			timeout \n",acb->host->host_no);
 			return 1;
@@ -2251,6 +2603,27 @@
 		arcmsr_enable_outbound_ints(acb, intmask_org);
 		}
 		break;
+	case ACB_ADAPTER_TYPE_C: {
+		if (cdb_phyaddr_hi32 != 0) {
+			struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
+
+			if (cdb_phyaddr_hi32 != 0) {
+				unsigned char Retries = 0x00;
+				do {
+					printk(KERN_NOTICE "arcmsr%d: cdb_phyaddr_hi32=0x%x \n", acb->adapter_index, cdb_phyaddr_hi32);
+				} while (Retries++ < 100);
+			}
+			writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->msgcode_rwbuffer[0]);
+			writel(cdb_phyaddr_hi32, &reg->msgcode_rwbuffer[1]);
+			writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
+			writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
+			if (!arcmsr_hbc_wait_msgint_ready(acb)) {
+				printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
+				timeout \n", acb->host->host_no);
+				return 1;
+			}
+		}
+		}
 	}
 	return 0;
 }
@@ -2258,7 +2631,6 @@
 static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
 {
 	uint32_t firmware_state = 0;
-
 	switch (acb->adapter_type) {
 
 	case ACB_ADAPTER_TYPE_A: {
@@ -2277,12 +2649,56 @@
 		writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
 		}
 		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
+		do {
+			firmware_state = readl(&reg->outbound_msgaddr1);
+		} while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
+		}
 	}
 }
 
 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb)
 {
 	struct MessageUnit_A __iomem *reg = acb->pmuA;
+	if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
+		return;
+	} else {
+		acb->fw_flag = FW_NORMAL;
+		if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)){
+			atomic_set(&acb->rq_map_token, 16);
+		}
+		atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
+		if (atomic_dec_and_test(&acb->rq_map_token))
+			return;
+		writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
+		mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
+	}
+	return;
+}
+
+static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_B __iomem *reg = acb->pmuB;
+	if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
+		return;
+	} else {
+		acb->fw_flag = FW_NORMAL;
+		if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
+			atomic_set(&acb->rq_map_token,16);
+		}
+		atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
+		if(atomic_dec_and_test(&acb->rq_map_token))
+			return;
+		writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
+		mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
+	}
+	return;
+}
+
+static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_C __iomem *reg = acb->pmuC;
 	if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0) || ((acb->acb_flags & ACB_F_ABORT) != 0)) {
 		return;
 	} else {
@@ -2294,27 +2710,8 @@
 		if (atomic_dec_and_test(&acb->rq_map_token))
 			return;
 		writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
-		mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
-	}
-	return;
-}
-
-static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb)
-{
-	struct MessageUnit_B __iomem *reg = acb->pmuB;
-
-	if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0) || ((acb->acb_flags & ACB_F_ABORT) != 0)) {
-		return;
-	} else {
-		acb->fw_flag = FW_NORMAL;
-		if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
-			atomic_set(&acb->rq_map_token, 16);
-		}
-		atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
-		if (atomic_dec_and_test(&acb->rq_map_token))
-			return;
-		writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
-		mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
+		writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
+		mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
 	}
 	return;
 }
@@ -2322,7 +2719,6 @@
 static void arcmsr_request_device_map(unsigned long pacb)
 {
 	struct AdapterControlBlock *acb = (struct AdapterControlBlock *)pacb;
-
 	switch (acb->adapter_type) {
 		case ACB_ADAPTER_TYPE_A: {
 			arcmsr_request_hba_device_map(acb);
@@ -2332,6 +2728,9 @@
 			arcmsr_request_hbb_device_map(acb);
 		}
 		break;
+		case ACB_ADAPTER_TYPE_C: {
+			arcmsr_request_hbc_device_map(acb);
+		}
 	}
 }
 
@@ -2340,7 +2739,7 @@
 	struct MessageUnit_A __iomem *reg = acb->pmuA;
 	acb->acb_flags |= ACB_F_MSG_START_BGRB;
 	writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
-	if (arcmsr_hba_wait_msgint_ready(acb)) {
+	if (!arcmsr_hba_wait_msgint_ready(acb)) {
 		printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
 				rebulid' timeout \n", acb->host->host_no);
 	}
@@ -2351,12 +2750,24 @@
 	struct MessageUnit_B *reg = acb->pmuB;
 	acb->acb_flags |= ACB_F_MSG_START_BGRB;
 	writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell);
-	if (arcmsr_hbb_wait_msgint_ready(acb)) {
+	if (!arcmsr_hbb_wait_msgint_ready(acb)) {
 		printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
 				rebulid' timeout \n",acb->host->host_no);
 	}
 }
 
+static void arcmsr_start_hbc_bgrb(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
+	pACB->acb_flags |= ACB_F_MSG_START_BGRB;
+	writel(ARCMSR_INBOUND_MESG0_START_BGRB, &phbcmu->inbound_msgaddr0);
+	writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &phbcmu->inbound_doorbell);
+	if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
+		printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
+				rebulid' timeout \n", pACB->host->host_no);
+	}
+	return;
+}
 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
 {
 	switch (acb->adapter_type) {
@@ -2366,6 +2777,8 @@
 	case ACB_ADAPTER_TYPE_B:
 		arcmsr_start_hbb_bgrb(acb);
 		break;
+	case ACB_ADAPTER_TYPE_C:
+		arcmsr_start_hbc_bgrb(acb);
 	}
 }
 
@@ -2391,6 +2804,14 @@
 		/* let IOP know data has been read */
 		}
 		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
+		uint32_t outbound_doorbell;
+		/* empty doorbell Qbuffer if door bell ringed */
+		outbound_doorbell = readl(&reg->outbound_doorbell);
+		writel(outbound_doorbell, &reg->outbound_doorbell_clear);
+		writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
+		}
 	}
 }
 
@@ -2403,12 +2824,14 @@
 		{
 			struct MessageUnit_B *reg = acb->pmuB;
 			writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell);
-			if(arcmsr_hbb_wait_msgint_ready(acb)) {
+			if (!arcmsr_hbb_wait_msgint_ready(acb)) {
 				printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
 				return;
 			}
 		}
 		break;
+	case ACB_ADAPTER_TYPE_C:
+		return;
 	}
 	return;
 }
@@ -2416,21 +2839,33 @@
 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb)
 {
 	uint8_t value[64];
-	int i;
-	struct MessageUnit_A __iomem *reg = acb->pmuA;
-
+	int i, count = 0;
+	struct MessageUnit_A __iomem *pmuA = acb->pmuA;
+	struct MessageUnit_C __iomem *pmuC = acb->pmuC;
+	u32 temp = 0;
 	/* backup pci config data */
-	printk(KERN_ERR "arcmsr%d: executing hw bus reset .....\n", acb->host->host_no);
+	printk(KERN_NOTICE "arcmsr%d: executing hw bus reset .....\n", acb->host->host_no);
 	for (i = 0; i < 64; i++) {
 		pci_read_config_byte(acb->pdev, i, &value[i]);
 	}
 	/* hardware reset signal */
 	if ((acb->dev_id == 0x1680)) {
-		writel(ARCMSR_ARC1680_BUS_RESET, &reg->reserved1[0]);
+		writel(ARCMSR_ARC1680_BUS_RESET, &pmuA->reserved1[0]);
+	} else if ((acb->dev_id == 0x1880)) {
+		do {
+			count++;
+			writel(0xF, &pmuC->write_sequence);
+			writel(0x4, &pmuC->write_sequence);
+			writel(0xB, &pmuC->write_sequence);
+			writel(0x2, &pmuC->write_sequence);
+			writel(0x7, &pmuC->write_sequence);
+			writel(0xD, &pmuC->write_sequence);
+		} while ((((temp = readl(&pmuC->host_diagnostic)) | ARCMSR_ARC1880_DiagWrite_ENABLE) == 0) && (count < 5));
+		writel(ARCMSR_ARC1880_RESET_ADAPTER, &pmuC->host_diagnostic);
 	} else {
-	pci_write_config_byte(acb->pdev, 0x84, 0x20);
+		pci_write_config_byte(acb->pdev, 0x84, 0x20);
 	}
-	msleep(1000);
+	msleep(2000);
 	/* write back pci config data */
 	for (i = 0; i < 64; i++) {
 		pci_write_config_byte(acb->pdev, i, value[i]);
@@ -2438,35 +2873,11 @@
 	msleep(1000);
 	return;
 }
-/*
-****************************************************************************
-****************************************************************************
-*/
-	int arcmsr_sleep_for_bus_reset(struct scsi_cmnd *cmd)
-	{
-			struct Scsi_Host *shost = NULL;
-			int i, isleep;
-
-			shost = cmd->device->host;
-			isleep = sleeptime / 10;
-			if (isleep > 0) {
-				for (i = 0; i < isleep; i++) {
-					msleep(10000);
-				}
-			}
-
-			isleep = sleeptime % 10;
-			if (isleep > 0) {
-				msleep(isleep * 1000);
-			}
-			return 0;
-	}
 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
 {
 	uint32_t intmask_org;
-
-       /* disable all outbound interrupt */
-       intmask_org = arcmsr_disable_outbound_ints(acb);
+	/* disable all outbound interrupt */
+	intmask_org = arcmsr_disable_outbound_ints(acb);
 	arcmsr_wait_firmware_ready(acb);
 	arcmsr_iop_confirm(acb);
 	/*start background rebuild*/
@@ -2485,7 +2896,6 @@
 	uint32_t intmask_org;
 	uint8_t rtnval = 0x00;
 	int i = 0;
-
 	if (atomic_read(&acb->ccboutstandingcount) != 0) {
 		/* disable all outbound interrupt */
 		intmask_org = arcmsr_disable_outbound_ints(acb);
@@ -2514,54 +2924,50 @@
 	uint32_t intmask_org, outbound_doorbell;
 	int retry_count = 0;
 	int rtn = FAILED;
-
 	acb = (struct AdapterControlBlock *) cmd->device->host->hostdata;
-	printk(KERN_ERR "arcmsr: executing eh bus reset .....num_resets = %d, \
-		num_aborts = %d \n", acb->num_resets, acb->num_aborts);
+	printk(KERN_ERR "arcmsr: executing bus reset eh.....num_resets = %d, num_aborts = %d \n", acb->num_resets, acb->num_aborts);
 	acb->num_resets++;
 
-		switch (acb->adapter_type) {
-		case ACB_ADAPTER_TYPE_A: {
-			if (acb->acb_flags & ACB_F_BUS_RESET) {
+	switch(acb->adapter_type){
+		case ACB_ADAPTER_TYPE_A:{
+			if (acb->acb_flags & ACB_F_BUS_RESET){
 				long timeout;
-				timeout = wait_event_timeout(wait_q,
-					(acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
+				printk(KERN_ERR "arcmsr: there is an  bus reset eh proceeding.......\n");
+				timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
 				if (timeout) {
 					return SUCCESS;
 				}
 			}
 			acb->acb_flags |= ACB_F_BUS_RESET;
-			if (arcmsr_iop_reset(acb)) {
+			if (!arcmsr_iop_reset(acb)) {
 				struct MessageUnit_A __iomem *reg;
 				reg = acb->pmuA;
-			arcmsr_hardware_reset(acb);
-			acb->acb_flags &= ~ACB_F_IOP_INITED;
+				arcmsr_hardware_reset(acb);
+				acb->acb_flags &= ~ACB_F_IOP_INITED;
 sleep_again:
-			arcmsr_sleep_for_bus_reset(cmd);
+				arcmsr_sleep_for_bus_reset(cmd);
 				if ((readl(&reg->outbound_msgaddr1) & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0) {
-					printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, \
-						retry=%d \n", acb->host->host_no, retry_count);
-			if (retry_count > retrycount) {
+					printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d \n", acb->host->host_no, retry_count);
+					if (retry_count > retrycount) {
 						acb->fw_flag = FW_DEADLOCK;
-						printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, \
-							RETRY TERMINATED!! \n", acb->host->host_no);
+						printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!! \n", acb->host->host_no);
 						return FAILED;
-			}
-			retry_count++;
-			goto sleep_again;
-			}
-			acb->acb_flags |= ACB_F_IOP_INITED;
-			/* disable all outbound interrupt */
-			intmask_org = arcmsr_disable_outbound_ints(acb);
+					}
+					retry_count++;
+					goto sleep_again;
+				}
+				acb->acb_flags |= ACB_F_IOP_INITED;
+				/* disable all outbound interrupt */
+				intmask_org = arcmsr_disable_outbound_ints(acb);
 				arcmsr_get_firmware_spec(acb);
-			arcmsr_start_adapter_bgrb(acb);
-			/* clear Qbuffer if door bell ringed */
-			outbound_doorbell = readl(&reg->outbound_doorbell);
-			writel(outbound_doorbell, &reg->outbound_doorbell); /*clear interrupt */
-			writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
-			/* enable outbound Post Queue,outbound doorbell Interrupt */
-			arcmsr_enable_outbound_ints(acb, intmask_org);
-			atomic_set(&acb->rq_map_token, 16);
+				arcmsr_start_adapter_bgrb(acb);
+				/* clear Qbuffer if door bell ringed */
+				outbound_doorbell = readl(&reg->outbound_doorbell);
+				writel(outbound_doorbell, &reg->outbound_doorbell); /*clear interrupt */
+   				writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
+				/* enable outbound Post Queue,outbound doorbell Interrupt */
+				arcmsr_enable_outbound_ints(acb, intmask_org);
+				atomic_set(&acb->rq_map_token, 16);
 				atomic_set(&acb->ante_token_value, 16);
 				acb->fw_flag = FW_NORMAL;
 				init_timer(&acb->eternal_timer);
@@ -2571,39 +2977,13 @@
 				add_timer(&acb->eternal_timer);
 				acb->acb_flags &= ~ACB_F_BUS_RESET;
 				rtn = SUCCESS;
-				printk(KERN_ERR "arcmsr: scsi eh bus reset succeeds\n");
+				printk(KERN_ERR "arcmsr: scsi  bus reset eh returns with success\n");
 			} else {
 				acb->acb_flags &= ~ACB_F_BUS_RESET;
 				if (atomic_read(&acb->rq_map_token) == 0) {
 					atomic_set(&acb->rq_map_token, 16);
 					atomic_set(&acb->ante_token_value, 16);
 					acb->fw_flag = FW_NORMAL;
-			init_timer(&acb->eternal_timer);
-						acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
-			acb->eternal_timer.data = (unsigned long) acb;
-			acb->eternal_timer.function = &arcmsr_request_device_map;
-			add_timer(&acb->eternal_timer);
-				} else {
-					atomic_set(&acb->rq_map_token, 16);
-					atomic_set(&acb->ante_token_value, 16);
-					acb->fw_flag = FW_NORMAL;
-					mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
-		}
-				rtn = SUCCESS;
-	}
-			break;
-		}
-		case ACB_ADAPTER_TYPE_B:{
-			acb->acb_flags |= ACB_F_BUS_RESET;
-			if (arcmsr_iop_reset(acb)) {
-				acb->acb_flags &= ~ACB_F_BUS_RESET;
-				rtn = FAILED;
-	} else {
-	acb->acb_flags &= ~ACB_F_BUS_RESET;
-				if (atomic_read(&acb->rq_map_token) == 0) {
-					atomic_set(&acb->rq_map_token, 16);
-					atomic_set(&acb->ante_token_value, 16);
-					acb->fw_flag = FW_NORMAL;
 					init_timer(&acb->eternal_timer);
 						acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
 					acb->eternal_timer.data = (unsigned long) acb;
@@ -2616,7 +2996,104 @@
 					mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
 				}
 				rtn = SUCCESS;
-	}
+			}
+			break;
+		}
+		case ACB_ADAPTER_TYPE_B:{
+			acb->acb_flags |= ACB_F_BUS_RESET;
+			if (!arcmsr_iop_reset(acb)) {
+				acb->acb_flags &= ~ACB_F_BUS_RESET;
+				rtn = FAILED;
+			} else {
+				acb->acb_flags &= ~ACB_F_BUS_RESET;
+				if (atomic_read(&acb->rq_map_token) == 0) {
+					atomic_set(&acb->rq_map_token, 16);
+					atomic_set(&acb->ante_token_value, 16);
+					acb->fw_flag = FW_NORMAL;
+					init_timer(&acb->eternal_timer);
+						acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
+					acb->eternal_timer.data = (unsigned long) acb;
+					acb->eternal_timer.function = &arcmsr_request_device_map;
+					add_timer(&acb->eternal_timer);
+				} else {
+					atomic_set(&acb->rq_map_token, 16);
+					atomic_set(&acb->ante_token_value, 16);
+					acb->fw_flag = FW_NORMAL;
+					mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
+				}
+				rtn = SUCCESS;
+			}
+			break;
+		}
+		case ACB_ADAPTER_TYPE_C:{
+			if (acb->acb_flags & ACB_F_BUS_RESET) {
+				long timeout;
+				printk(KERN_ERR "arcmsr: there is an bus reset eh proceeding.......\n");
+				timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
+				if (timeout) {
+					return SUCCESS;
+				}
+			}
+			acb->acb_flags |= ACB_F_BUS_RESET;
+			if (!arcmsr_iop_reset(acb)) {
+				struct MessageUnit_C __iomem *reg;
+				reg = acb->pmuC;
+				arcmsr_hardware_reset(acb);
+				acb->acb_flags &= ~ACB_F_IOP_INITED;
+sleep:
+				arcmsr_sleep_for_bus_reset(cmd);
+				if ((readl(&reg->host_diagnostic) & 0x04) != 0) {
+					printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d \n", acb->host->host_no, retry_count);
+					if (retry_count > retrycount) {
+						acb->fw_flag = FW_DEADLOCK;
+						printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!! \n", acb->host->host_no);
+						return FAILED;
+					}
+					retry_count++;
+					goto sleep;
+				}
+				acb->acb_flags |= ACB_F_IOP_INITED;
+				/* disable all outbound interrupt */
+				intmask_org = arcmsr_disable_outbound_ints(acb);
+				arcmsr_get_firmware_spec(acb);
+				arcmsr_start_adapter_bgrb(acb);
+				/* clear Qbuffer if door bell ringed */
+				outbound_doorbell = readl(&reg->outbound_doorbell);
+				writel(outbound_doorbell, &reg->outbound_doorbell_clear); /*clear interrupt */
+				writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
+				/* enable outbound Post Queue,outbound doorbell Interrupt */
+				arcmsr_enable_outbound_ints(acb, intmask_org);
+				atomic_set(&acb->rq_map_token, 16);
+				atomic_set(&acb->ante_token_value, 16);
+				acb->fw_flag = FW_NORMAL;
+				init_timer(&acb->eternal_timer);
+				acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
+				acb->eternal_timer.data = (unsigned long) acb;
+				acb->eternal_timer.function = &arcmsr_request_device_map;
+				add_timer(&acb->eternal_timer);
+				acb->acb_flags &= ~ACB_F_BUS_RESET;
+				rtn = SUCCESS;
+				printk(KERN_ERR "arcmsr: scsi bus reset eh returns with success\n");
+			} else {
+				acb->acb_flags &= ~ACB_F_BUS_RESET;
+				if (atomic_read(&acb->rq_map_token) == 0) {
+					atomic_set(&acb->rq_map_token, 16);
+					atomic_set(&acb->ante_token_value, 16);
+					acb->fw_flag = FW_NORMAL;
+					init_timer(&acb->eternal_timer);
+						acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
+					acb->eternal_timer.data = (unsigned long) acb;
+					acb->eternal_timer.function = &arcmsr_request_device_map;
+					add_timer(&acb->eternal_timer);
+				} else {
+					atomic_set(&acb->rq_map_token, 16);
+					atomic_set(&acb->ante_token_value, 16);
+					acb->fw_flag = FW_NORMAL;
+					mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
+				}
+				rtn = SUCCESS;
+			}
+			break;
 		}
 	}
 	return rtn;
@@ -2626,9 +3103,7 @@
 		struct CommandControlBlock *ccb)
 {
 	int rtn;
-	spin_lock_irq(&acb->eh_lock);
 	rtn = arcmsr_polling_ccbdone(acb, ccb);
-	spin_unlock_irq(&acb->eh_lock);
 	return rtn;
 }
 
@@ -2638,7 +3113,6 @@
 		(struct AdapterControlBlock *)cmd->device->host->hostdata;
 	int i = 0;
 	int rtn = FAILED;
-
 	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);
@@ -2672,7 +3146,6 @@
 	static char buf[256];
 	char *type;
 	int raid6 = 1;
-
 	switch (acb->pdev->device) {
 	case PCI_DEVICE_ID_ARECA_1110:
 	case PCI_DEVICE_ID_ARECA_1200:
@@ -2696,6 +3169,7 @@
 	case PCI_DEVICE_ID_ARECA_1381:
 	case PCI_DEVICE_ID_ARECA_1680:
 	case PCI_DEVICE_ID_ARECA_1681:
+	case PCI_DEVICE_ID_ARECA_1880:
 		type = "SAS";
 		break;
 	default: