xref: /drivers/scsi/mpt2sas/mpi/mpi2.h

/*
 *  Copyright (c) 2000-2011 LSI Corporation.
 *
 *
 *           Name:  mpi2.h
 *          Title:  MPI Message independent structures and definitions
 *                  including System Interface Register Set and
 *                  scatter/gather formats.
 *  Creation Date:  June 21, 2006
 *
 *  mpi2.h Version:  02.00.22
 *
 *  Version History
 *  ---------------
 *
 *  Date      Version   Description
 *  --------  --------  ------------------------------------------------------
 *  04-30-07  02.00.00  Corresponds to Fusion-MPT MPI Specification Rev A.
 *  06-04-07  02.00.01  Bumped MPI2_HEADER_VERSION_UNIT.
 *  06-26-07  02.00.02  Bumped MPI2_HEADER_VERSION_UNIT.
 *  08-31-07  02.00.03  Bumped MPI2_HEADER_VERSION_UNIT.
 *                      Moved ReplyPostHostIndex register to offset 0x6C of the
 *                      MPI2_SYSTEM_INTERFACE_REGS and modified the define for
 *                      MPI2_REPLY_POST_HOST_INDEX_OFFSET.
 *                      Added union of request descriptors.
 *                      Added union of reply descriptors.
 *  10-31-07  02.00.04  Bumped MPI2_HEADER_VERSION_UNIT.
 *                      Added define for MPI2_VERSION_02_00.
 *                      Fixed the size of the FunctionDependent5 field in the
 *                      MPI2_DEFAULT_REPLY structure.
 *  12-18-07  02.00.05  Bumped MPI2_HEADER_VERSION_UNIT.
 *                      Removed the MPI-defined Fault Codes and extended the
 *                      product specific codes up to 0xEFFF.
 *                      Added a sixth key value for the WriteSequence register
 *                      and changed the flush value to 0x0.
 *                      Added message function codes for Diagnostic Buffer Post
 *                      and Diagnsotic Release.
 *                      New IOCStatus define: MPI2_IOCSTATUS_DIAGNOSTIC_RELEASED
 *                      Moved MPI2_VERSION_UNION from mpi2_ioc.h.
 *  02-29-08  02.00.06  Bumped MPI2_HEADER_VERSION_UNIT.
 *  03-03-08  02.00.07  Bumped MPI2_HEADER_VERSION_UNIT.
 *  05-21-08  02.00.08  Bumped MPI2_HEADER_VERSION_UNIT.
 *                      Added #defines for marking a reply descriptor as unused.
 *  06-27-08  02.00.09  Bumped MPI2_HEADER_VERSION_UNIT.
 *  10-02-08  02.00.10  Bumped MPI2_HEADER_VERSION_UNIT.
 *                      Moved LUN field defines from mpi2_init.h.
 *  01-19-09  02.00.11  Bumped MPI2_HEADER_VERSION_UNIT.
 *  05-06-09  02.00.12  Bumped MPI2_HEADER_VERSION_UNIT.
 *                      In all request and reply descriptors, replaced VF_ID
 *                      field with MSIxIndex field.
 *                      Removed DevHandle field from
 *                      MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR and made those
 *                      bytes reserved.
 *                      Added RAID Accelerator functionality.
 *  07-30-09  02.00.13  Bumped MPI2_HEADER_VERSION_UNIT.
 *  10-28-09  02.00.14  Bumped MPI2_HEADER_VERSION_UNIT.
 *                      Added MSI-x index mask and shift for Reply Post Host
 *                      Index register.
 *                      Added function code for Host Based Discovery Action.
 *  02-10-10  02.00.15  Bumped MPI2_HEADER_VERSION_UNIT.
 *                      Added define for MPI2_FUNCTION_PWR_MGMT_CONTROL.
 *                      Added defines for product-specific range of message
 *                      function codes, 0xF0 to 0xFF.
 *  05-12-10  02.00.16  Bumped MPI2_HEADER_VERSION_UNIT.
 *                      Added alternative defines for the SGE Direction bit.
 *  08-11-10  02.00.17  Bumped MPI2_HEADER_VERSION_UNIT.
 *  11-10-10  02.00.18  Bumped MPI2_HEADER_VERSION_UNIT.
 *                      Added MPI2_IEEE_SGE_FLAGS_SYSTEMPLBCPI_ADDR define.
 *  02-23-11  02.00.19  Bumped MPI2_HEADER_VERSION_UNIT.
 *                      Added MPI2_FUNCTION_SEND_HOST_MESSAGE.
 *  03-09-11  02.00.20  Bumped MPI2_HEADER_VERSION_UNIT.
 *  05-25-11  02.00.21  Bumped MPI2_HEADER_VERSION_UNIT.
 *  08-24-11  02.00.22  Bumped MPI2_HEADER_VERSION_UNIT.
 *  --------------------------------------------------------------------------
 */

#ifndef MPI2_H
#define MPI2_H


/*****************************************************************************
*
*        MPI Version Definitions
*
*****************************************************************************/

#define MPI2_VERSION_MAJOR                  (0x02)
#define MPI2_VERSION_MINOR                  (0x00)
#define MPI2_VERSION_MAJOR_MASK             (0xFF00)
#define MPI2_VERSION_MAJOR_SHIFT            (8)
#define MPI2_VERSION_MINOR_MASK             (0x00FF)
#define MPI2_VERSION_MINOR_SHIFT            (0)
#define MPI2_VERSION ((MPI2_VERSION_MAJOR << MPI2_VERSION_MAJOR_SHIFT) |   \
                                      MPI2_VERSION_MINOR)

#define MPI2_VERSION_02_00                  (0x0200)

/* versioning for this MPI header set */
#define MPI2_HEADER_VERSION_UNIT            (0x16)
#define MPI2_HEADER_VERSION_DEV             (0x00)
#define MPI2_HEADER_VERSION_UNIT_MASK       (0xFF00)
#define MPI2_HEADER_VERSION_UNIT_SHIFT      (8)
#define MPI2_HEADER_VERSION_DEV_MASK        (0x00FF)
#define MPI2_HEADER_VERSION_DEV_SHIFT       (0)
#define MPI2_HEADER_VERSION ((MPI2_HEADER_VERSION_UNIT << 8) | MPI2_HEADER_VERSION_DEV)


/*****************************************************************************
*
*        IOC State Definitions
*
*****************************************************************************/

#define MPI2_IOC_STATE_RESET               (0x00000000)
#define MPI2_IOC_STATE_READY               (0x10000000)
#define MPI2_IOC_STATE_OPERATIONAL         (0x20000000)
#define MPI2_IOC_STATE_FAULT               (0x40000000)

#define MPI2_IOC_STATE_MASK                (0xF0000000)
#define MPI2_IOC_STATE_SHIFT               (28)

/* Fault state range for prodcut specific codes */
#define MPI2_FAULT_PRODUCT_SPECIFIC_MIN                 (0x0000)
#define MPI2_FAULT_PRODUCT_SPECIFIC_MAX                 (0xEFFF)


/*****************************************************************************
*
*        System Interface Register Definitions
*
*****************************************************************************/

typedef volatile struct _MPI2_SYSTEM_INTERFACE_REGS
{
    U32         Doorbell;                   /* 0x00 */
    U32         WriteSequence;              /* 0x04 */
    U32         HostDiagnostic;             /* 0x08 */
    U32         Reserved1;                  /* 0x0C */
    U32         DiagRWData;                 /* 0x10 */
    U32         DiagRWAddressLow;           /* 0x14 */
    U32         DiagRWAddressHigh;          /* 0x18 */
    U32         Reserved2[5];               /* 0x1C */
    U32         HostInterruptStatus;        /* 0x30 */
    U32         HostInterruptMask;          /* 0x34 */
    U32         DCRData;                    /* 0x38 */
    U32         DCRAddress;                 /* 0x3C */
    U32         Reserved3[2];               /* 0x40 */
    U32         ReplyFreeHostIndex;         /* 0x48 */
    U32         Reserved4[8];               /* 0x4C */
    U32         ReplyPostHostIndex;         /* 0x6C */
    U32         Reserved5;                  /* 0x70 */
    U32         HCBSize;                    /* 0x74 */
    U32         HCBAddressLow;              /* 0x78 */
    U32         HCBAddressHigh;             /* 0x7C */
    U32         Reserved6[16];              /* 0x80 */
    U32         RequestDescriptorPostLow;   /* 0xC0 */
    U32         RequestDescriptorPostHigh;  /* 0xC4 */
    U32         Reserved7[14];              /* 0xC8 */
} MPI2_SYSTEM_INTERFACE_REGS, MPI2_POINTER PTR_MPI2_SYSTEM_INTERFACE_REGS,
  Mpi2SystemInterfaceRegs_t, MPI2_POINTER pMpi2SystemInterfaceRegs_t;

/*
 * Defines for working with the Doorbell register.
 */
#define MPI2_DOORBELL_OFFSET                    (0x00000000)

/* IOC --> System values */
#define MPI2_DOORBELL_USED                      (0x08000000)
#define MPI2_DOORBELL_WHO_INIT_MASK             (0x07000000)
#define MPI2_DOORBELL_WHO_INIT_SHIFT            (24)
#define MPI2_DOORBELL_FAULT_CODE_MASK           (0x0000FFFF)
#define MPI2_DOORBELL_DATA_MASK                 (0x0000FFFF)

/* System --> IOC values */
#define MPI2_DOORBELL_FUNCTION_MASK             (0xFF000000)
#define MPI2_DOORBELL_FUNCTION_SHIFT            (24)
#define MPI2_DOORBELL_ADD_DWORDS_MASK           (0x00FF0000)
#define MPI2_DOORBELL_ADD_DWORDS_SHIFT          (16)


/*
 * Defines for the WriteSequence register
 */
#define MPI2_WRITE_SEQUENCE_OFFSET              (0x00000004)
#define MPI2_WRSEQ_KEY_VALUE_MASK               (0x0000000F)
#define MPI2_WRSEQ_FLUSH_KEY_VALUE              (0x0)
#define MPI2_WRSEQ_1ST_KEY_VALUE                (0xF)
#define MPI2_WRSEQ_2ND_KEY_VALUE                (0x4)
#define MPI2_WRSEQ_3RD_KEY_VALUE                (0xB)
#define MPI2_WRSEQ_4TH_KEY_VALUE                (0x2)
#define MPI2_WRSEQ_5TH_KEY_VALUE                (0x7)
#define MPI2_WRSEQ_6TH_KEY_VALUE                (0xD)

/*
 * Defines for the HostDiagnostic register
 */
#define MPI2_HOST_DIAGNOSTIC_OFFSET             (0x00000008)

#define MPI2_DIAG_BOOT_DEVICE_SELECT_MASK       (0x00001800)
#define MPI2_DIAG_BOOT_DEVICE_SELECT_DEFAULT    (0x00000000)
#define MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW       (0x00000800)

#define MPI2_DIAG_CLEAR_FLASH_BAD_SIG           (0x00000400)
#define MPI2_DIAG_FORCE_HCB_ON_RESET            (0x00000200)
#define MPI2_DIAG_HCB_MODE                      (0x00000100)
#define MPI2_DIAG_DIAG_WRITE_ENABLE             (0x00000080)
#define MPI2_DIAG_FLASH_BAD_SIG                 (0x00000040)
#define MPI2_DIAG_RESET_HISTORY                 (0x00000020)
#define MPI2_DIAG_DIAG_RW_ENABLE                (0x00000010)
#define MPI2_DIAG_RESET_ADAPTER                 (0x00000004)
#define MPI2_DIAG_HOLD_IOC_RESET                (0x00000002)

/*
 * Offsets for DiagRWData and address
 */
#define MPI2_DIAG_RW_DATA_OFFSET                (0x00000010)
#define MPI2_DIAG_RW_ADDRESS_LOW_OFFSET         (0x00000014)
#define MPI2_DIAG_RW_ADDRESS_HIGH_OFFSET        (0x00000018)

/*
 * Defines for the HostInterruptStatus register
 */
#define MPI2_HOST_INTERRUPT_STATUS_OFFSET       (0x00000030)
#define MPI2_HIS_SYS2IOC_DB_STATUS              (0x80000000)
#define MPI2_HIS_IOP_DOORBELL_STATUS            MPI2_HIS_SYS2IOC_DB_STATUS
#define MPI2_HIS_RESET_IRQ_STATUS               (0x40000000)
#define MPI2_HIS_REPLY_DESCRIPTOR_INTERRUPT     (0x00000008)
#define MPI2_HIS_IOC2SYS_DB_STATUS              (0x00000001)
#define MPI2_HIS_DOORBELL_INTERRUPT             MPI2_HIS_IOC2SYS_DB_STATUS

/*
 * Defines for the HostInterruptMask register
 */
#define MPI2_HOST_INTERRUPT_MASK_OFFSET         (0x00000034)
#define MPI2_HIM_RESET_IRQ_MASK                 (0x40000000)
#define MPI2_HIM_REPLY_INT_MASK                 (0x00000008)
#define MPI2_HIM_RIM                            MPI2_HIM_REPLY_INT_MASK
#define MPI2_HIM_IOC2SYS_DB_MASK                (0x00000001)
#define MPI2_HIM_DIM                            MPI2_HIM_IOC2SYS_DB_MASK

/*
 * Offsets for DCRData and address
 */
#define MPI2_DCR_DATA_OFFSET                    (0x00000038)
#define MPI2_DCR_ADDRESS_OFFSET                 (0x0000003C)

/*
 * Offset for the Reply Free Queue
 */
#define MPI2_REPLY_FREE_HOST_INDEX_OFFSET       (0x00000048)

/*
 * Defines for the Reply Descriptor Post Queue
 */
#define MPI2_REPLY_POST_HOST_INDEX_OFFSET       (0x0000006C)
#define MPI2_REPLY_POST_HOST_INDEX_MASK         (0x00FFFFFF)
#define MPI2_RPHI_MSIX_INDEX_MASK               (0xFF000000)
#define MPI2_RPHI_MSIX_INDEX_SHIFT              (24)

/*
 * Defines for the HCBSize and address
 */
#define MPI2_HCB_SIZE_OFFSET                    (0x00000074)
#define MPI2_HCB_SIZE_SIZE_MASK                 (0xFFFFF000)
#define MPI2_HCB_SIZE_HCB_ENABLE                (0x00000001)

#define MPI2_HCB_ADDRESS_LOW_OFFSET             (0x00000078)
#define MPI2_HCB_ADDRESS_HIGH_OFFSET            (0x0000007C)

/*
 * Offsets for the Request Queue
 */
#define MPI2_REQUEST_DESCRIPTOR_POST_LOW_OFFSET     (0x000000C0)
#define MPI2_REQUEST_DESCRIPTOR_POST_HIGH_OFFSET    (0x000000C4)


/*****************************************************************************
*
*        Message Descriptors
*
*****************************************************************************/

/* Request Descriptors */

/* Default Request Descriptor */
typedef struct _MPI2_DEFAULT_REQUEST_DESCRIPTOR
{
    U8              RequestFlags;               /* 0x00 */
    U8              MSIxIndex;                  /* 0x01 */
    U16             SMID;                       /* 0x02 */
    U16             LMID;                       /* 0x04 */
    U16             DescriptorTypeDependent;    /* 0x06 */
} MPI2_DEFAULT_REQUEST_DESCRIPTOR,
  MPI2_POINTER PTR_MPI2_DEFAULT_REQUEST_DESCRIPTOR,
  Mpi2DefaultRequestDescriptor_t, MPI2_POINTER pMpi2DefaultRequestDescriptor_t;

/* defines for the RequestFlags field */
#define MPI2_REQ_DESCRIPT_FLAGS_TYPE_MASK               (0x0E)
#define MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO                 (0x00)
#define MPI2_REQ_DESCRIPT_FLAGS_SCSI_TARGET             (0x02)
#define MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY           (0x06)
#define MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE            (0x08)
#define MPI2_REQ_DESCRIPT_FLAGS_RAID_ACCELERATOR        (0x0A)

#define MPI2_REQ_DESCRIPT_FLAGS_IOC_FIFO_MARKER (0x01)


/* High Priority Request Descriptor */
typedef struct _MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR
{
    U8              RequestFlags;               /* 0x00 */
    U8              MSIxIndex;                  /* 0x01 */
    U16             SMID;                       /* 0x02 */
    U16             LMID;                       /* 0x04 */
    U16             Reserved1;                  /* 0x06 */
} MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR,
  MPI2_POINTER PTR_MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR,
  Mpi2HighPriorityRequestDescriptor_t,
  MPI2_POINTER pMpi2HighPriorityRequestDescriptor_t;


/* SCSI IO Request Descriptor */
typedef struct _MPI2_SCSI_IO_REQUEST_DESCRIPTOR
{
    U8              RequestFlags;               /* 0x00 */
    U8              MSIxIndex;                  /* 0x01 */
    U16             SMID;                       /* 0x02 */
    U16             LMID;                       /* 0x04 */
    U16             DevHandle;                  /* 0x06 */
} MPI2_SCSI_IO_REQUEST_DESCRIPTOR,
  MPI2_POINTER PTR_MPI2_SCSI_IO_REQUEST_DESCRIPTOR,
  Mpi2SCSIIORequestDescriptor_t, MPI2_POINTER pMpi2SCSIIORequestDescriptor_t;


/* SCSI Target Request Descriptor */
typedef struct _MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR
{
    U8              RequestFlags;               /* 0x00 */
    U8              MSIxIndex;                  /* 0x01 */
    U16             SMID;                       /* 0x02 */
    U16             LMID;                       /* 0x04 */
    U16             IoIndex;                    /* 0x06 */
} MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR,
  MPI2_POINTER PTR_MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR,
  Mpi2SCSITargetRequestDescriptor_t,
  MPI2_POINTER pMpi2SCSITargetRequestDescriptor_t;


/* RAID Accelerator Request Descriptor */
typedef struct _MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR {
    U8              RequestFlags;               /* 0x00 */
    U8              MSIxIndex;                  /* 0x01 */
    U16             SMID;                       /* 0x02 */
    U16             LMID;                       /* 0x04 */
    U16             Reserved;                   /* 0x06 */
} MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR,
  MPI2_POINTER PTR_MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR,
  Mpi2RAIDAcceleratorRequestDescriptor_t,
  MPI2_POINTER pMpi2RAIDAcceleratorRequestDescriptor_t;


/* union of Request Descriptors */
typedef union _MPI2_REQUEST_DESCRIPTOR_UNION
{
    MPI2_DEFAULT_REQUEST_DESCRIPTOR             Default;
    MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR       HighPriority;
    MPI2_SCSI_IO_REQUEST_DESCRIPTOR             SCSIIO;
    MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR         SCSITarget;
    MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR          RAIDAccelerator;
    U64                                         Words;
} MPI2_REQUEST_DESCRIPTOR_UNION, MPI2_POINTER PTR_MPI2_REQUEST_DESCRIPTOR_UNION,
  Mpi2RequestDescriptorUnion_t, MPI2_POINTER pMpi2RequestDescriptorUnion_t;


/* Reply Descriptors */

/* Default Reply Descriptor */
typedef struct _MPI2_DEFAULT_REPLY_DESCRIPTOR
{
    U8              ReplyFlags;                 /* 0x00 */
    U8              MSIxIndex;                  /* 0x01 */
    U16             DescriptorTypeDependent1;   /* 0x02 */
    U32             DescriptorTypeDependent2;   /* 0x04 */
} MPI2_DEFAULT_REPLY_DESCRIPTOR, MPI2_POINTER PTR_MPI2_DEFAULT_REPLY_DESCRIPTOR,
  Mpi2DefaultReplyDescriptor_t, MPI2_POINTER pMpi2DefaultReplyDescriptor_t;

/* defines for the ReplyFlags field */
#define MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK                   (0x0F)
#define MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS             (0x00)
#define MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY               (0x01)
#define MPI2_RPY_DESCRIPT_FLAGS_TARGETASSIST_SUCCESS        (0x02)
#define MPI2_RPY_DESCRIPT_FLAGS_TARGET_COMMAND_BUFFER       (0x03)
#define MPI2_RPY_DESCRIPT_FLAGS_RAID_ACCELERATOR_SUCCESS    (0x05)
#define MPI2_RPY_DESCRIPT_FLAGS_UNUSED                      (0x0F)

/* values for marking a reply descriptor as unused */
#define MPI2_RPY_DESCRIPT_UNUSED_WORD0_MARK             (0xFFFFFFFF)
#define MPI2_RPY_DESCRIPT_UNUSED_WORD1_MARK             (0xFFFFFFFF)

/* Address Reply Descriptor */
typedef struct _MPI2_ADDRESS_REPLY_DESCRIPTOR
{
    U8              ReplyFlags;                 /* 0x00 */
    U8              MSIxIndex;                  /* 0x01 */
    U16             SMID;                       /* 0x02 */
    U32             ReplyFrameAddress;          /* 0x04 */
} MPI2_ADDRESS_REPLY_DESCRIPTOR, MPI2_POINTER PTR_MPI2_ADDRESS_REPLY_DESCRIPTOR,
  Mpi2AddressReplyDescriptor_t, MPI2_POINTER pMpi2AddressReplyDescriptor_t;

#define MPI2_ADDRESS_REPLY_SMID_INVALID                 (0x00)


/* SCSI IO Success Reply Descriptor */
typedef struct _MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR
{
    U8              ReplyFlags;                 /* 0x00 */
    U8              MSIxIndex;                  /* 0x01 */
    U16             SMID;                       /* 0x02 */
    U16             TaskTag;                    /* 0x04 */
    U16             Reserved1;                  /* 0x06 */
} MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR,
  MPI2_POINTER PTR_MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR,
  Mpi2SCSIIOSuccessReplyDescriptor_t,
  MPI2_POINTER pMpi2SCSIIOSuccessReplyDescriptor_t;


/* TargetAssist Success Reply Descriptor */
typedef struct _MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR
{
    U8              ReplyFlags;                 /* 0x00 */
    U8              MSIxIndex;                  /* 0x01 */
    U16             SMID;                       /* 0x02 */
    U8              SequenceNumber;             /* 0x04 */
    U8              Reserved1;                  /* 0x05 */
    U16             IoIndex;                    /* 0x06 */
} MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR,
  MPI2_POINTER PTR_MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR,
  Mpi2TargetAssistSuccessReplyDescriptor_t,
  MPI2_POINTER pMpi2TargetAssistSuccessReplyDescriptor_t;


/* Target Command Buffer Reply Descriptor */
typedef struct _MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR
{
    U8              ReplyFlags;                 /* 0x00 */
    U8              MSIxIndex;                  /* 0x01 */
    U8              VP_ID;                      /* 0x02 */
    U8              Flags;                      /* 0x03 */
    U16             InitiatorDevHandle;         /* 0x04 */
    U16             IoIndex;                    /* 0x06 */
} MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR,
  MPI2_POINTER PTR_MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR,
  Mpi2TargetCommandBufferReplyDescriptor_t,
  MPI2_POINTER pMpi2TargetCommandBufferReplyDescriptor_t;

/* defines for Flags field */
#define MPI2_RPY_DESCRIPT_TCB_FLAGS_PHYNUM_MASK     (0x3F)


/* RAID Accelerator Success Reply Descriptor */
typedef struct _MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR {
    U8              ReplyFlags;                 /* 0x00 */
    U8              MSIxIndex;                  /* 0x01 */
    U16             SMID;                       /* 0x02 */
    U32             Reserved;                   /* 0x04 */
} MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR,
  MPI2_POINTER PTR_MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR,
  Mpi2RAIDAcceleratorSuccessReplyDescriptor_t,
  MPI2_POINTER pMpi2RAIDAcceleratorSuccessReplyDescriptor_t;


/* union of Reply Descriptors */
typedef union _MPI2_REPLY_DESCRIPTORS_UNION
{
    MPI2_DEFAULT_REPLY_DESCRIPTOR                   Default;
    MPI2_ADDRESS_REPLY_DESCRIPTOR                   AddressReply;
    MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR           SCSIIOSuccess;
    MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR      TargetAssistSuccess;
    MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR     TargetCommandBuffer;
    MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR  RAIDAcceleratorSuccess;
    U64                                             Words;
} MPI2_REPLY_DESCRIPTORS_UNION, MPI2_POINTER PTR_MPI2_REPLY_DESCRIPTORS_UNION,
  Mpi2ReplyDescriptorsUnion_t, MPI2_POINTER pMpi2ReplyDescriptorsUnion_t;



/*****************************************************************************
*
*        Message Functions
*
*****************************************************************************/

#define MPI2_FUNCTION_SCSI_IO_REQUEST               (0x00) /* SCSI IO */
#define MPI2_FUNCTION_SCSI_TASK_MGMT                (0x01) /* SCSI Task Management */
#define MPI2_FUNCTION_IOC_INIT                      (0x02) /* IOC Init */
#define MPI2_FUNCTION_IOC_FACTS                     (0x03) /* IOC Facts */
#define MPI2_FUNCTION_CONFIG                        (0x04) /* Configuration */
#define MPI2_FUNCTION_PORT_FACTS                    (0x05) /* Port Facts */
#define MPI2_FUNCTION_PORT_ENABLE                   (0x06) /* Port Enable */
#define MPI2_FUNCTION_EVENT_NOTIFICATION            (0x07) /* Event Notification */
#define MPI2_FUNCTION_EVENT_ACK                     (0x08) /* Event Acknowledge */
#define MPI2_FUNCTION_FW_DOWNLOAD                   (0x09) /* FW Download */
#define MPI2_FUNCTION_TARGET_ASSIST                 (0x0B) /* Target Assist */
#define MPI2_FUNCTION_TARGET_STATUS_SEND            (0x0C) /* Target Status Send */
#define MPI2_FUNCTION_TARGET_MODE_ABORT             (0x0D) /* Target Mode Abort */
#define MPI2_FUNCTION_FW_UPLOAD                     (0x12) /* FW Upload */
#define MPI2_FUNCTION_RAID_ACTION                   (0x15) /* RAID Action */
#define MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH      (0x16) /* SCSI IO RAID Passthrough */
#define MPI2_FUNCTION_TOOLBOX                       (0x17) /* Toolbox */
#define MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR      (0x18) /* SCSI Enclosure Processor */
#define MPI2_FUNCTION_SMP_PASSTHROUGH               (0x1A) /* SMP Passthrough */
#define MPI2_FUNCTION_SAS_IO_UNIT_CONTROL           (0x1B) /* SAS IO Unit Control */
#define MPI2_FUNCTION_SATA_PASSTHROUGH              (0x1C) /* SATA Passthrough */
#define MPI2_FUNCTION_DIAG_BUFFER_POST              (0x1D) /* Diagnostic Buffer Post */
#define MPI2_FUNCTION_DIAG_RELEASE                  (0x1E) /* Diagnostic Release */
#define MPI2_FUNCTION_TARGET_CMD_BUF_BASE_POST      (0x24) /* Target Command Buffer Post Base */
#define MPI2_FUNCTION_TARGET_CMD_BUF_LIST_POST      (0x25) /* Target Command Buffer Post List */
#define MPI2_FUNCTION_RAID_ACCELERATOR              (0x2C) /* RAID Accelerator*/
/* Host Based Discovery Action */
#define MPI2_FUNCTION_HOST_BASED_DISCOVERY_ACTION   (0x2F)
/* Power Management Control */
#define MPI2_FUNCTION_PWR_MGMT_CONTROL              (0x30)
/* Send Host Message */
#define MPI2_FUNCTION_SEND_HOST_MESSAGE             (0x31)
/* beginning of product-specific range */
#define MPI2_FUNCTION_MIN_PRODUCT_SPECIFIC          (0xF0)
/* end of product-specific range */
#define MPI2_FUNCTION_MAX_PRODUCT_SPECIFIC          (0xFF)




/* Doorbell functions */
#define MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET        (0x40)
#define MPI2_FUNCTION_HANDSHAKE                     (0x42)


/*****************************************************************************
*
*        IOC Status Values
*
*****************************************************************************/

/* mask for IOCStatus status value */
#define MPI2_IOCSTATUS_MASK                     (0x7FFF)

/****************************************************************************
*  Common IOCStatus values for all replies
****************************************************************************/

#define MPI2_IOCSTATUS_SUCCESS                      (0x0000)
#define MPI2_IOCSTATUS_INVALID_FUNCTION             (0x0001)
#define MPI2_IOCSTATUS_BUSY                         (0x0002)
#define MPI2_IOCSTATUS_INVALID_SGL                  (0x0003)
#define MPI2_IOCSTATUS_INTERNAL_ERROR               (0x0004)
#define MPI2_IOCSTATUS_INVALID_VPID                 (0x0005)
#define MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES       (0x0006)
#define MPI2_IOCSTATUS_INVALID_FIELD                (0x0007)
#define MPI2_IOCSTATUS_INVALID_STATE                (0x0008)
#define MPI2_IOCSTATUS_OP_STATE_NOT_SUPPORTED       (0x0009)

/****************************************************************************
*  Config IOCStatus values
****************************************************************************/

#define MPI2_IOCSTATUS_CONFIG_INVALID_ACTION        (0x0020)
#define MPI2_IOCSTATUS_CONFIG_INVALID_TYPE          (0x0021)
#define MPI2_IOCSTATUS_CONFIG_INVALID_PAGE          (0x0022)
#define MPI2_IOCSTATUS_CONFIG_INVALID_DATA          (0x0023)
#define MPI2_IOCSTATUS_CONFIG_NO_DEFAULTS           (0x0024)
#define MPI2_IOCSTATUS_CONFIG_CANT_COMMIT           (0x0025)

/****************************************************************************
*  SCSI IO Reply
****************************************************************************/

#define MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR         (0x0040)
#define MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE       (0x0042)
#define MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE        (0x0043)
#define MPI2_IOCSTATUS_SCSI_DATA_OVERRUN            (0x0044)
#define MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN           (0x0045)
#define MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR           (0x0046)
#define MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR          (0x0047)
#define MPI2_IOCSTATUS_SCSI_TASK_TERMINATED         (0x0048)
#define MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH       (0x0049)
#define MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED        (0x004A)
#define MPI2_IOCSTATUS_SCSI_IOC_TERMINATED          (0x004B)
#define MPI2_IOCSTATUS_SCSI_EXT_TERMINATED          (0x004C)

/****************************************************************************
*  For use by SCSI Initiator and SCSI Target end-to-end data protection
****************************************************************************/

#define MPI2_IOCSTATUS_EEDP_GUARD_ERROR             (0x004D)
#define MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR           (0x004E)
#define MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR           (0x004F)

/****************************************************************************
*  SCSI Target values
****************************************************************************/

#define MPI2_IOCSTATUS_TARGET_INVALID_IO_INDEX      (0x0062)
#define MPI2_IOCSTATUS_TARGET_ABORTED               (0x0063)
#define MPI2_IOCSTATUS_TARGET_NO_CONN_RETRYABLE     (0x0064)
#define MPI2_IOCSTATUS_TARGET_NO_CONNECTION         (0x0065)
#define MPI2_IOCSTATUS_TARGET_XFER_COUNT_MISMATCH   (0x006A)
#define MPI2_IOCSTATUS_TARGET_DATA_OFFSET_ERROR     (0x006D)
#define MPI2_IOCSTATUS_TARGET_TOO_MUCH_WRITE_DATA   (0x006E)
#define MPI2_IOCSTATUS_TARGET_IU_TOO_SHORT          (0x006F)
#define MPI2_IOCSTATUS_TARGET_ACK_NAK_TIMEOUT       (0x0070)
#define MPI2_IOCSTATUS_TARGET_NAK_RECEIVED          (0x0071)

/****************************************************************************
*  Serial Attached SCSI values
****************************************************************************/

#define MPI2_IOCSTATUS_SAS_SMP_REQUEST_FAILED       (0x0090)
#define MPI2_IOCSTATUS_SAS_SMP_DATA_OVERRUN         (0x0091)

/****************************************************************************
*  Diagnostic Buffer Post / Diagnostic Release values
****************************************************************************/

#define MPI2_IOCSTATUS_DIAGNOSTIC_RELEASED          (0x00A0)

/****************************************************************************
*  RAID Accelerator values
****************************************************************************/

#define MPI2_IOCSTATUS_RAID_ACCEL_ERROR             (0x00B0)

/****************************************************************************
*  IOCStatus flag to indicate that log info is available
****************************************************************************/

#define MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE      (0x8000)

/****************************************************************************
*  IOCLogInfo Types
****************************************************************************/

#define MPI2_IOCLOGINFO_TYPE_MASK               (0xF0000000)
#define MPI2_IOCLOGINFO_TYPE_SHIFT              (28)
#define MPI2_IOCLOGINFO_TYPE_NONE               (0x0)
#define MPI2_IOCLOGINFO_TYPE_SCSI               (0x1)
#define MPI2_IOCLOGINFO_TYPE_FC                 (0x2)
#define MPI2_IOCLOGINFO_TYPE_SAS                (0x3)
#define MPI2_IOCLOGINFO_TYPE_ISCSI              (0x4)
#define MPI2_IOCLOGINFO_LOG_DATA_MASK           (0x0FFFFFFF)


/*****************************************************************************
*
*        Standard Message Structures
*
*****************************************************************************/

/****************************************************************************
* Request Message Header for all request messages
****************************************************************************/

typedef struct _MPI2_REQUEST_HEADER
{
    U16             FunctionDependent1;         /* 0x00 */
    U8              ChainOffset;                /* 0x02 */
    U8              Function;                   /* 0x03 */
    U16             FunctionDependent2;         /* 0x04 */
    U8              FunctionDependent3;         /* 0x06 */
    U8              MsgFlags;                   /* 0x07 */
    U8              VP_ID;                      /* 0x08 */
    U8              VF_ID;                      /* 0x09 */
    U16             Reserved1;                  /* 0x0A */
} MPI2_REQUEST_HEADER, MPI2_POINTER PTR_MPI2_REQUEST_HEADER,
  MPI2RequestHeader_t, MPI2_POINTER pMPI2RequestHeader_t;


/****************************************************************************
*  Default Reply
****************************************************************************/

typedef struct _MPI2_DEFAULT_REPLY
{
    U16             FunctionDependent1;         /* 0x00 */
    U8              MsgLength;                  /* 0x02 */
    U8              Function;                   /* 0x03 */
    U16             FunctionDependent2;         /* 0x04 */
    U8              FunctionDependent3;         /* 0x06 */
    U8              MsgFlags;                   /* 0x07 */
    U8              VP_ID;                      /* 0x08 */
    U8              VF_ID;                      /* 0x09 */
    U16             Reserved1;                  /* 0x0A */
    U16             FunctionDependent5;         /* 0x0C */
    U16             IOCStatus;                  /* 0x0E */
    U32             IOCLogInfo;                 /* 0x10 */
} MPI2_DEFAULT_REPLY, MPI2_POINTER PTR_MPI2_DEFAULT_REPLY,
  MPI2DefaultReply_t, MPI2_POINTER pMPI2DefaultReply_t;


/* common version structure/union used in messages and configuration pages */

typedef struct _MPI2_VERSION_STRUCT
{
    U8                      Dev;                        /* 0x00 */
    U8                      Unit;                       /* 0x01 */
    U8                      Minor;                      /* 0x02 */
    U8                      Major;                      /* 0x03 */
} MPI2_VERSION_STRUCT;

typedef union _MPI2_VERSION_UNION
{
    MPI2_VERSION_STRUCT     Struct;
    U32                     Word;
} MPI2_VERSION_UNION;


/* LUN field defines, common to many structures */
#define MPI2_LUN_FIRST_LEVEL_ADDRESSING             (0x0000FFFF)
#define MPI2_LUN_SECOND_LEVEL_ADDRESSING            (0xFFFF0000)
#define MPI2_LUN_THIRD_LEVEL_ADDRESSING             (0x0000FFFF)
#define MPI2_LUN_FOURTH_LEVEL_ADDRESSING            (0xFFFF0000)
#define MPI2_LUN_LEVEL_1_WORD                       (0xFF00)
#define MPI2_LUN_LEVEL_1_DWORD                      (0x0000FF00)


/*****************************************************************************
*
*        Fusion-MPT MPI Scatter Gather Elements
*
*****************************************************************************/

/****************************************************************************
*  MPI Simple Element structures
****************************************************************************/

typedef struct _MPI2_SGE_SIMPLE32
{
    U32                     FlagsLength;
    U32                     Address;
} MPI2_SGE_SIMPLE32, MPI2_POINTER PTR_MPI2_SGE_SIMPLE32,
  Mpi2SGESimple32_t, MPI2_POINTER pMpi2SGESimple32_t;

typedef struct _MPI2_SGE_SIMPLE64
{
    U32                     FlagsLength;
    U64                     Address;
} MPI2_SGE_SIMPLE64, MPI2_POINTER PTR_MPI2_SGE_SIMPLE64,
  Mpi2SGESimple64_t, MPI2_POINTER pMpi2SGESimple64_t;

typedef struct _MPI2_SGE_SIMPLE_UNION
{
    U32                     FlagsLength;
    union
    {
        U32                 Address32;
        U64                 Address64;
    } u;
} MPI2_SGE_SIMPLE_UNION, MPI2_POINTER PTR_MPI2_SGE_SIMPLE_UNION,
  Mpi2SGESimpleUnion_t, MPI2_POINTER pMpi2SGESimpleUnion_t;


/****************************************************************************
*  MPI Chain Element structures
****************************************************************************/

typedef struct _MPI2_SGE_CHAIN32
{
    U16                     Length;
    U8                      NextChainOffset;
    U8                      Flags;
    U32                     Address;
} MPI2_SGE_CHAIN32, MPI2_POINTER PTR_MPI2_SGE_CHAIN32,
  Mpi2SGEChain32_t, MPI2_POINTER pMpi2SGEChain32_t;

typedef struct _MPI2_SGE_CHAIN64
{
    U16                     Length;
    U8                      NextChainOffset;
    U8                      Flags;
    U64                     Address;
} MPI2_SGE_CHAIN64, MPI2_POINTER PTR_MPI2_SGE_CHAIN64,
  Mpi2SGEChain64_t, MPI2_POINTER pMpi2SGEChain64_t;

typedef struct _MPI2_SGE_CHAIN_UNION
{
    U16                     Length;
    U8                      NextChainOffset;
    U8                      Flags;
    union
    {
        U32                 Address32;
        U64                 Address64;
    } u;
} MPI2_SGE_CHAIN_UNION, MPI2_POINTER PTR_MPI2_SGE_CHAIN_UNION,
  Mpi2SGEChainUnion_t, MPI2_POINTER pMpi2SGEChainUnion_t;


/****************************************************************************
*  MPI Transaction Context Element structures
****************************************************************************/

typedef struct _MPI2_SGE_TRANSACTION32
{
    U8                      Reserved;
    U8                      ContextSize;
    U8                      DetailsLength;
    U8                      Flags;
    U32                     TransactionContext[1];
    U32                     TransactionDetails[1];
} MPI2_SGE_TRANSACTION32, MPI2_POINTER PTR_MPI2_SGE_TRANSACTION32,
  Mpi2SGETransaction32_t, MPI2_POINTER pMpi2SGETransaction32_t;

typedef struct _MPI2_SGE_TRANSACTION64
{
    U8                      Reserved;
    U8                      ContextSize;
    U8                      DetailsLength;
    U8                      Flags;
    U32                     TransactionContext[2];
    U32                     TransactionDetails[1];
} MPI2_SGE_TRANSACTION64, MPI2_POINTER PTR_MPI2_SGE_TRANSACTION64,
  Mpi2SGETransaction64_t, MPI2_POINTER pMpi2SGETransaction64_t;

typedef struct _MPI2_SGE_TRANSACTION96
{
    U8                      Reserved;
    U8                      ContextSize;
    U8                      DetailsLength;
    U8                      Flags;
    U32                     TransactionContext[3];
    U32                     TransactionDetails[1];
} MPI2_SGE_TRANSACTION96, MPI2_POINTER PTR_MPI2_SGE_TRANSACTION96,
  Mpi2SGETransaction96_t, MPI2_POINTER pMpi2SGETransaction96_t;

typedef struct _MPI2_SGE_TRANSACTION128
{
    U8                      Reserved;
    U8                      ContextSize;
    U8                      DetailsLength;
    U8                      Flags;
    U32                     TransactionContext[4];
    U32                     TransactionDetails[1];
} MPI2_SGE_TRANSACTION128, MPI2_POINTER PTR_MPI2_SGE_TRANSACTION128,
  Mpi2SGETransaction_t128, MPI2_POINTER pMpi2SGETransaction_t128;

typedef struct _MPI2_SGE_TRANSACTION_UNION
{
    U8                      Reserved;
    U8                      ContextSize;
    U8                      DetailsLength;
    U8                      Flags;
    union
    {
        U32                 TransactionContext32[1];
        U32                 TransactionContext64[2];
        U32                 TransactionContext96[3];
        U32                 TransactionContext128[4];
    } u;
    U32                     TransactionDetails[1];
} MPI2_SGE_TRANSACTION_UNION, MPI2_POINTER PTR_MPI2_SGE_TRANSACTION_UNION,
  Mpi2SGETransactionUnion_t, MPI2_POINTER pMpi2SGETransactionUnion_t;


/****************************************************************************
*  MPI SGE union for IO SGL's
****************************************************************************/

typedef struct _MPI2_MPI_SGE_IO_UNION
{
    union
    {
        MPI2_SGE_SIMPLE_UNION   Simple;
        MPI2_SGE_CHAIN_UNION    Chain;
    } u;
} MPI2_MPI_SGE_IO_UNION, MPI2_POINTER PTR_MPI2_MPI_SGE_IO_UNION,
  Mpi2MpiSGEIOUnion_t, MPI2_POINTER pMpi2MpiSGEIOUnion_t;


/****************************************************************************
*  MPI SGE union for SGL's with Simple and Transaction elements
****************************************************************************/

typedef struct _MPI2_SGE_TRANS_SIMPLE_UNION
{
    union
    {
        MPI2_SGE_SIMPLE_UNION       Simple;
        MPI2_SGE_TRANSACTION_UNION  Transaction;
    } u;
} MPI2_SGE_TRANS_SIMPLE_UNION, MPI2_POINTER PTR_MPI2_SGE_TRANS_SIMPLE_UNION,
  Mpi2SGETransSimpleUnion_t, MPI2_POINTER pMpi2SGETransSimpleUnion_t;


/****************************************************************************
*  All MPI SGE types union
****************************************************************************/

typedef struct _MPI2_MPI_SGE_UNION
{
    union
    {
        MPI2_SGE_SIMPLE_UNION       Simple;
        MPI2_SGE_CHAIN_UNION        Chain;
        MPI2_SGE_TRANSACTION_UNION  Transaction;
    } u;
} MPI2_MPI_SGE_UNION, MPI2_POINTER PTR_MPI2_MPI_SGE_UNION,
  Mpi2MpiSgeUnion_t, MPI2_POINTER pMpi2MpiSgeUnion_t;


/****************************************************************************
*  MPI SGE field definition and masks
****************************************************************************/

/* Flags field bit definitions */

#define MPI2_SGE_FLAGS_LAST_ELEMENT             (0x80)
#define MPI2_SGE_FLAGS_END_OF_BUFFER            (0x40)
#define MPI2_SGE_FLAGS_ELEMENT_TYPE_MASK        (0x30)
#define MPI2_SGE_FLAGS_LOCAL_ADDRESS            (0x08)
#define MPI2_SGE_FLAGS_DIRECTION                (0x04)
#define MPI2_SGE_FLAGS_ADDRESS_SIZE             (0x02)
#define MPI2_SGE_FLAGS_END_OF_LIST              (0x01)

#define MPI2_SGE_FLAGS_SHIFT                    (24)

#define MPI2_SGE_LENGTH_MASK                    (0x00FFFFFF)
#define MPI2_SGE_CHAIN_LENGTH_MASK              (0x0000FFFF)

/* Element Type */

#define MPI2_SGE_FLAGS_TRANSACTION_ELEMENT      (0x00)
#define MPI2_SGE_FLAGS_SIMPLE_ELEMENT           (0x10)
#define MPI2_SGE_FLAGS_CHAIN_ELEMENT            (0x30)
#define MPI2_SGE_FLAGS_ELEMENT_MASK             (0x30)

/* Address location */

#define MPI2_SGE_FLAGS_SYSTEM_ADDRESS           (0x00)

/* Direction */

#define MPI2_SGE_FLAGS_IOC_TO_HOST              (0x00)
#define MPI2_SGE_FLAGS_HOST_TO_IOC              (0x04)

#define MPI2_SGE_FLAGS_DEST                     (MPI2_SGE_FLAGS_IOC_TO_HOST)
#define MPI2_SGE_FLAGS_SOURCE                   (MPI2_SGE_FLAGS_HOST_TO_IOC)

/* Address Size */

#define MPI2_SGE_FLAGS_32_BIT_ADDRESSING        (0x00)
#define MPI2_SGE_FLAGS_64_BIT_ADDRESSING        (0x02)

/* Context Size */

#define MPI2_SGE_FLAGS_32_BIT_CONTEXT           (0x00)
#define MPI2_SGE_FLAGS_64_BIT_CONTEXT           (0x02)
#define MPI2_SGE_FLAGS_96_BIT_CONTEXT           (0x04)
#define MPI2_SGE_FLAGS_128_BIT_CONTEXT          (0x06)

#define MPI2_SGE_CHAIN_OFFSET_MASK              (0x00FF0000)
#define MPI2_SGE_CHAIN_OFFSET_SHIFT             (16)

/****************************************************************************
*  MPI SGE operation Macros
****************************************************************************/

/* SIMPLE FlagsLength manipulations... */
#define MPI2_SGE_SET_FLAGS(f)          ((U32)(f) << MPI2_SGE_FLAGS_SHIFT)
#define MPI2_SGE_GET_FLAGS(f)          (((f) & ~MPI2_SGE_LENGTH_MASK) >> MPI2_SGE_FLAGS_SHIFT)
#define MPI2_SGE_LENGTH(f)             ((f) & MPI2_SGE_LENGTH_MASK)
#define MPI2_SGE_CHAIN_LENGTH(f)       ((f) & MPI2_SGE_CHAIN_LENGTH_MASK)

#define MPI2_SGE_SET_FLAGS_LENGTH(f,l) (MPI2_SGE_SET_FLAGS(f) | MPI2_SGE_LENGTH(l))

#define MPI2_pSGE_GET_FLAGS(psg)            MPI2_SGE_GET_FLAGS((psg)->FlagsLength)
#define MPI2_pSGE_GET_LENGTH(psg)           MPI2_SGE_LENGTH((psg)->FlagsLength)
#define MPI2_pSGE_SET_FLAGS_LENGTH(psg,f,l) (psg)->FlagsLength = MPI2_SGE_SET_FLAGS_LENGTH(f,l)

/* CAUTION - The following are READ-MODIFY-WRITE! */
#define MPI2_pSGE_SET_FLAGS(psg,f)      (psg)->FlagsLength |= MPI2_SGE_SET_FLAGS(f)
#define MPI2_pSGE_SET_LENGTH(psg,l)     (psg)->FlagsLength |= MPI2_SGE_LENGTH(l)

#define MPI2_GET_CHAIN_OFFSET(x)    ((x & MPI2_SGE_CHAIN_OFFSET_MASK) >> MPI2_SGE_CHAIN_OFFSET_SHIFT)


/*****************************************************************************
*
*        Fusion-MPT IEEE Scatter Gather Elements
*
*****************************************************************************/

/****************************************************************************
*  IEEE Simple Element structures
****************************************************************************/

typedef struct _MPI2_IEEE_SGE_SIMPLE32
{
    U32                     Address;
    U32                     FlagsLength;
} MPI2_IEEE_SGE_SIMPLE32, MPI2_POINTER PTR_MPI2_IEEE_SGE_SIMPLE32,
  Mpi2IeeeSgeSimple32_t, MPI2_POINTER pMpi2IeeeSgeSimple32_t;

typedef struct _MPI2_IEEE_SGE_SIMPLE64
{
    U64                     Address;
    U32                     Length;
    U16                     Reserved1;
    U8                      Reserved2;
    U8                      Flags;
} MPI2_IEEE_SGE_SIMPLE64, MPI2_POINTER PTR_MPI2_IEEE_SGE_SIMPLE64,
  Mpi2IeeeSgeSimple64_t, MPI2_POINTER pMpi2IeeeSgeSimple64_t;

typedef union _MPI2_IEEE_SGE_SIMPLE_UNION
{
    MPI2_IEEE_SGE_SIMPLE32  Simple32;
    MPI2_IEEE_SGE_SIMPLE64  Simple64;
} MPI2_IEEE_SGE_SIMPLE_UNION, MPI2_POINTER PTR_MPI2_IEEE_SGE_SIMPLE_UNION,
  Mpi2IeeeSgeSimpleUnion_t, MPI2_POINTER pMpi2IeeeSgeSimpleUnion_t;


/****************************************************************************
*  IEEE Chain Element structures
****************************************************************************/

typedef MPI2_IEEE_SGE_SIMPLE32  MPI2_IEEE_SGE_CHAIN32;

typedef MPI2_IEEE_SGE_SIMPLE64  MPI2_IEEE_SGE_CHAIN64;

typedef union _MPI2_IEEE_SGE_CHAIN_UNION
{
    MPI2_IEEE_SGE_CHAIN32   Chain32;
    MPI2_IEEE_SGE_CHAIN64   Chain64;
} MPI2_IEEE_SGE_CHAIN_UNION, MPI2_POINTER PTR_MPI2_IEEE_SGE_CHAIN_UNION,
  Mpi2IeeeSgeChainUnion_t, MPI2_POINTER pMpi2IeeeSgeChainUnion_t;


/****************************************************************************
*  All IEEE SGE types union
****************************************************************************/

typedef struct _MPI2_IEEE_SGE_UNION
{
    union
    {
        MPI2_IEEE_SGE_SIMPLE_UNION  Simple;
        MPI2_IEEE_SGE_CHAIN_UNION   Chain;
    } u;
} MPI2_IEEE_SGE_UNION, MPI2_POINTER PTR_MPI2_IEEE_SGE_UNION,
  Mpi2IeeeSgeUnion_t, MPI2_POINTER pMpi2IeeeSgeUnion_t;


/****************************************************************************
*  IEEE SGE field definitions and masks
****************************************************************************/

/* Flags field bit definitions */

#define MPI2_IEEE_SGE_FLAGS_ELEMENT_TYPE_MASK   (0x80)

#define MPI2_IEEE32_SGE_FLAGS_SHIFT             (24)

#define MPI2_IEEE32_SGE_LENGTH_MASK             (0x00FFFFFF)

/* Element Type */

#define MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT      (0x00)
#define MPI2_IEEE_SGE_FLAGS_CHAIN_ELEMENT       (0x80)

/* Data Location Address Space */

#define MPI2_IEEE_SGE_FLAGS_ADDR_MASK           (0x03)
#define MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR         (0x00)
						/* IEEE Simple Element only */
#define MPI2_IEEE_SGE_FLAGS_IOCDDR_ADDR         (0x01)
						/* IEEE Simple Element only */
#define MPI2_IEEE_SGE_FLAGS_IOCPLB_ADDR         (0x02)
#define MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR      (0x03)
						/* IEEE Simple Element only */
#define MPI2_IEEE_SGE_FLAGS_SYSTEMPLBPCI_ADDR   (0x03)
						/* IEEE Chain Element only */
#define MPI2_IEEE_SGE_FLAGS_SYSTEMPLBCPI_ADDR   \
	(MPI2_IEEE_SGE_FLAGS_SYSTEMPLBPCI_ADDR) /* typo in name */

/****************************************************************************
*  IEEE SGE operation Macros
****************************************************************************/

/* SIMPLE FlagsLength manipulations... */
#define MPI2_IEEE32_SGE_SET_FLAGS(f)     ((U32)(f) << MPI2_IEEE32_SGE_FLAGS_SHIFT)
#define MPI2_IEEE32_SGE_GET_FLAGS(f)     (((f) & ~MPI2_IEEE32_SGE_LENGTH_MASK) >> MPI2_IEEE32_SGE_FLAGS_SHIFT)
#define MPI2_IEEE32_SGE_LENGTH(f)        ((f) & MPI2_IEEE32_SGE_LENGTH_MASK)

#define MPI2_IEEE32_SGE_SET_FLAGS_LENGTH(f, l)      (MPI2_IEEE32_SGE_SET_FLAGS(f) | MPI2_IEEE32_SGE_LENGTH(l))

#define MPI2_IEEE32_pSGE_GET_FLAGS(psg)             MPI2_IEEE32_SGE_GET_FLAGS((psg)->FlagsLength)
#define MPI2_IEEE32_pSGE_GET_LENGTH(psg)            MPI2_IEEE32_SGE_LENGTH((psg)->FlagsLength)
#define MPI2_IEEE32_pSGE_SET_FLAGS_LENGTH(psg,f,l)  (psg)->FlagsLength = MPI2_IEEE32_SGE_SET_FLAGS_LENGTH(f,l)

/* CAUTION - The following are READ-MODIFY-WRITE! */
#define MPI2_IEEE32_pSGE_SET_FLAGS(psg,f)    (psg)->FlagsLength |= MPI2_IEEE32_SGE_SET_FLAGS(f)
#define MPI2_IEEE32_pSGE_SET_LENGTH(psg,l)   (psg)->FlagsLength |= MPI2_IEEE32_SGE_LENGTH(l)




/*****************************************************************************
*
*        Fusion-MPT MPI/IEEE Scatter Gather Unions
*
*****************************************************************************/

typedef union _MPI2_SIMPLE_SGE_UNION
{
    MPI2_SGE_SIMPLE_UNION       MpiSimple;
    MPI2_IEEE_SGE_SIMPLE_UNION  IeeeSimple;
} MPI2_SIMPLE_SGE_UNION, MPI2_POINTER PTR_MPI2_SIMPLE_SGE_UNION,
  Mpi2SimpleSgeUntion_t, MPI2_POINTER pMpi2SimpleSgeUntion_t;


typedef union _MPI2_SGE_IO_UNION
{
    MPI2_SGE_SIMPLE_UNION       MpiSimple;
    MPI2_SGE_CHAIN_UNION        MpiChain;
    MPI2_IEEE_SGE_SIMPLE_UNION  IeeeSimple;
    MPI2_IEEE_SGE_CHAIN_UNION   IeeeChain;
} MPI2_SGE_IO_UNION, MPI2_POINTER PTR_MPI2_SGE_IO_UNION,
  Mpi2SGEIOUnion_t, MPI2_POINTER pMpi2SGEIOUnion_t;


/****************************************************************************
*
*  Values for SGLFlags field, used in many request messages with an SGL
*
****************************************************************************/

/* values for MPI SGL Data Location Address Space subfield */
#define MPI2_SGLFLAGS_ADDRESS_SPACE_MASK            (0x0C)
#define MPI2_SGLFLAGS_SYSTEM_ADDRESS_SPACE          (0x00)
#define MPI2_SGLFLAGS_IOCDDR_ADDRESS_SPACE          (0x04)
#define MPI2_SGLFLAGS_IOCPLB_ADDRESS_SPACE          (0x08)
#define MPI2_SGLFLAGS_IOCPLBNTA_ADDRESS_SPACE       (0x0C)
/* values for SGL Type subfield */
#define MPI2_SGLFLAGS_SGL_TYPE_MASK                 (0x03)
#define MPI2_SGLFLAGS_SGL_TYPE_MPI                  (0x00)
#define MPI2_SGLFLAGS_SGL_TYPE_IEEE32               (0x01)
#define MPI2_SGLFLAGS_SGL_TYPE_IEEE64               (0x02)


#endif