scsi3.h

优龙2410linux2.6.8内核源代码

/*
 *  linux/drivers/message/fusion/scsi3.h
 *      SCSI-3 definitions and macros.
 *      (Ultimately) SCSI-3 definitions; for now, inheriting
 *      SCSI-2 definitions.
 *
 *  Copyright (c) 1996-2004 Steven J. Ralston
 *  Written By: Steven J. Ralston (19960517)
 *  (mailto:[e-mail])
 *  (mailto:[e-mail])
 *
 *  $Id: scsi3.h,v 1.9 2002/02/27 18:45:02 sralston Exp $
 */

#ifndef SCSI3_H_INCLUDED
#define SCSI3_H_INCLUDED
/***************************************************************************/

/****************************************************************************
 *
 *  Includes
 */
#ifdef __KERNEL__
#include <linux/types.h>
#else
    #ifndef U_STUFF_DEFINED
    #define U_STUFF_DEFINED
    typedef unsigned char u8;
    typedef unsigned short u16;
    typedef unsigned int u32;
    #endif
#endif

/****************************************************************************
 *
 *  Defines
 */

/*
 *    SCSI Commands
 */
#define CMD_TestUnitReady      0x00
#define CMD_RezeroUnit         0x01  /* direct-access devices */
#define CMD_Rewind             0x01  /* sequential-access devices */
#define CMD_RequestSense       0x03
#define CMD_FormatUnit         0x04
#define CMD_ReassignBlock      0x07
#define CMD_Read6              0x08
#define CMD_Write6             0x0A
#define CMD_WriteFilemark      0x10
#define CMD_Space              0x11
#define CMD_Inquiry            0x12
#define CMD_ModeSelect6        0x15
#define CMD_ModeSense6         0x1A
#define CMD_Reserve6           0x16
#define CMD_Release6           0x17
#define CMD_Erase              0x19
#define CMD_StartStopUnit      0x1b  /* direct-access devices */
#define CMD_LoadUnload         0x1b  /* sequential-access devices */
#define CMD_ReceiveDiagnostic  0x1C
#define CMD_SendDiagnostic     0x1D
#define CMD_ReadCapacity       0x25
#define CMD_Read10             0x28
#define CMD_Write10            0x2A
#define CMD_WriteVerify        0x2E
#define CMD_Verify             0x2F
#define CMD_SynchronizeCache   0x35
#define CMD_ReadDefectData     0x37
#define CMD_WriteBuffer        0x3B
#define CMD_ReadBuffer         0x3C
#define CMD_ReadLong           0x3E
#define CMD_LogSelect          0x4C
#define CMD_LogSense           0x4D
#define CMD_ModeSelect10       0x55
#define CMD_Reserve10          0x56
#define CMD_Release10          0x57
#define CMD_ModeSense10        0x5A
#define CMD_PersistReserveIn   0x5E
#define CMD_PersistReserveOut  0x5F
#define CMD_ReportLuns         0xA0

/*
 *    Control byte field
 */
#define CONTROL_BYTE_NACA_BIT  0x04
#define CONTROL_BYTE_Flag_BIT  0x02
#define CONTROL_BYTE_Link_BIT  0x01

/*
 *    SCSI Messages
 */
#define MSG_COMPLETE             0x00
#define MSG_EXTENDED             0x01
#define MSG_SAVE_POINTERS        0x02
#define MSG_RESTORE_POINTERS     0x03
#define MSG_DISCONNECT           0x04
#define MSG_IDERROR              0x05
#define MSG_ABORT                0x06
#define MSG_REJECT               0x07
#define MSG_NOP                  0x08
#define MSG_PARITY_ERROR         0x09
#define MSG_LINKED_CMD_COMPLETE  0x0a
#define MSG_LCMD_COMPLETE_W_FLG  0x0b
#define MSG_BUS_DEVICE_RESET     0x0c
#define MSG_ABORT_TAG            0x0d
#define MSG_CLEAR_QUEUE          0x0e
#define MSG_INITIATE_RECOVERY    0x0f

#define MSG_RELEASE_RECOVRY      0x10
#define MSG_TERMINATE_IO         0x11

#define MSG_SIMPLE_QUEUE         0x20
#define MSG_HEAD_OF_QUEUE        0x21
#define MSG_ORDERED_QUEUE        0x22
#define MSG_IGNORE_WIDE_RESIDUE  0x23

#define MSG_IDENTIFY             0x80
#define MSG_IDENTIFY_W_DISC      0xc0

/*
 *    SCSI Phases
 */
#define PHS_DATA_OUT  0x00
#define PHS_DATA_IN   0x01
#define PHS_COMMAND   0x02
#define PHS_STATUS    0x03
#define PHS_MSG_OUT   0x06
#define PHS_MSG_IN    0x07

/*
 *    Statuses
 */
#define STS_GOOD                        0x00
#define STS_CHECK_CONDITION             0x02
#define STS_CONDITION_MET               0x04
#define STS_BUSY                        0x08
#define STS_INTERMEDIATE                0x10
#define STS_INTERMEDIATE_CONDITION_MET  0x14
#define STS_RESERVATION_CONFLICT        0x18
#define STS_COMMAND_TERMINATED          0x22
#define STS_TASK_SET_FULL               0x28
#define    STS_QUEUE_FULL               0x28
#define STS_ACA_ACTIVE                  0x30

#define STS_VALID_MASK                  0x3e

#define SCSI_STATUS(x)  ((x) & STS_VALID_MASK)

/*
 *    SCSI QTag Types
 */
#define QTAG_SIMPLE     0x20
#define QTAG_HEAD_OF_Q  0x21
#define QTAG_ORDERED    0x22

/*
 *    SCSI Sense Key Definitons
 */
#define SK_NO_SENSE         0x00
#define SK_RECOVERED_ERROR  0x01
#define SK_NOT_READY        0x02
#define SK_MEDIUM_ERROR     0x03
#define SK_HARDWARE_ERROR   0x04
#define SK_ILLEGAL_REQUEST  0x05
#define SK_UNIT_ATTENTION   0x06
#define SK_DATA_PROTECT     0x07
#define SK_BLANK_CHECK      0x08
#define SK_VENDOR_SPECIFIC  0x09
#define SK_COPY_ABORTED     0x0a
#define SK_ABORTED_COMMAND  0x0b
#define SK_EQUAL            0x0c
#define SK_VOLUME_OVERFLOW  0x0d
#define SK_MISCOMPARE       0x0e
#define SK_RESERVED         0x0f



#define SCSI_MAX_INQUIRY_BYTES  96
#define SCSI_STD_INQUIRY_BYTES  36

#undef USE_SCSI_COMPLETE_INQDATA
/*
 *      Structure definition for SCSI Inquiry Data
 *
 *  NOTE: The following structure is 96 bytes in size
 *      iff USE_SCSI_COMPLETE_INQDATA IS defined above (i.e. w/ "#define").
 *      If USE_SCSI_COMPLETE_INQDATA is NOT defined above (i.e. w/ "#undef")
 *      then the following structure is only 36 bytes in size.
 *  THE CHOICE IS YOURS!
 */
typedef struct SCSI_Inquiry_Data
{
#ifdef USE_SCSI_COMPLETE_INQDATA
    u8   InqByte[SCSI_MAX_INQUIRY_BYTES];
#else
    u8   InqByte[SCSI_STD_INQUIRY_BYTES];
#endif

/*
 * the following structure works only for little-endian (Intel,
 * LSB first (1234) byte order) systems with 4-byte ints.
 *
        u32    Periph_Device_Type    : 5,
               Periph_Qualifier      : 3,
               Device_Type_Modifier  : 7,
               Removable_Media       : 1,
               ANSI_Version          : 3,
               ECMA_Version          : 3,
               ISO_Version           : 2,
               Response_Data_Format  : 4,
               reserved_0            : 3,
               AERC                  : 1  ;
        u32    Additional_Length     : 8,
               reserved_1            :16,
               SftReset              : 1,
               CmdQue                : 1,
               reserved_2            : 1,
               Linked                : 1,
               Sync                  : 1,
               WBus16                : 1,
               WBus32                : 1,
               RelAdr                : 1  ;
        u8     Vendor_ID[8];
        u8     Product_ID[16];
        u8     Revision_Level [4];
#ifdef USE_SCSI_COMPLETE_INQDATA
        u8     Vendor_Specific[20];
        u8     reserved_3[40];
#endif
 *
 */

} SCSI_Inquiry_Data_t;

#define INQ_PERIPHINFO_BYTE            0
#define   INQ_Periph_Qualifier_MASK      0xe0
#define   INQ_Periph_Device_Type_MASK    0x1f

#define INQ_Peripheral_Qualifier(inqp) \
    (int)((*((u8*)(inqp)+INQ_PERIPHINFO_BYTE) & INQ_Periph_Qualifier_MASK) >> 5)
#define INQ_Peripheral_Device_Type(inqp) \
    (int)(*((u8*)(inqp)+INQ_PERIPHINFO_BYTE) & INQ_Periph_Device_Type_MASK)


#define INQ_DEVTYPEMOD_BYTE            1
#define   INQ_RMB_BIT                    0x80
#define   INQ_Device_Type_Modifier_MASK  0x7f

#define INQ_Removable_Medium(inqp) \
    (int)(*((u8*)(inqp)+INQ_DEVTYPEMOD_BYTE) & INQ_RMB_BIT)
#define INQ_Device_Type_Modifier(inqp) \
    (int)(*((u8*)(inqp)+INQ_DEVTYPEMOD_BYTE) & INQ_Device_Type_Modifier_MASK)


#define INQ_VERSIONINFO_BYTE           2
#define   INQ_ISO_Version_MASK           0xc0
#define   INQ_ECMA_Version_MASK          0x38
#define   INQ_ANSI_Version_MASK          0x07

#define INQ_ISO_Version(inqp) \
    (int)(*((u8*)(inqp)+INQ_VERSIONINFO_BYTE) & INQ_ISO_Version_MASK)
#define INQ_ECMA_Version(inqp) \
    (int)(*((u8*)(inqp)+INQ_VERSIONINFO_BYTE) & INQ_ECMA_Version_MASK)
#define INQ_ANSI_Version(inqp) \
    (int)(*((u8*)(inqp)+INQ_VERSIONINFO_BYTE) & INQ_ANSI_Version_MASK)


#define INQ_BYTE3                      3
#define   INQ_AERC_BIT                   0x80
#define   INQ_TrmTsk_BIT                 0x40
#define   INQ_NormACA_BIT                0x20
#define   INQ_RDF_MASK                   0x0F

#define INQ_AER_Capable(inqp) \
    (int)(*((u8*)(inqp)+INQ_BYTE3) & INQ_AERC_BIT)
#define INQ_TrmTsk(inqp) \
    (int)(*((u8*)(inqp)+INQ_BYTE3) & INQ_TrmTsk_BIT)
#define INQ_NormACA(inqp) \
    (int)(*((u8*)(inqp)+INQ_BYTE3) & INQ_NormACA_BIT)
#define INQ_Response_Data_Format(inqp) \
    (int)(*((u8*)(inqp)+INQ_BYTE3) & INQ_RDF_MASK)


#define INQ_CAPABILITY_BYTE            7
#define   INQ_RelAdr_BIT                 0x80
#define   INQ_WBus32_BIT                 0x40
#define   INQ_WBus16_BIT                 0x20
#define   INQ_Sync_BIT                   0x10
#define   INQ_Linked_BIT                 0x08
  /*      INQ_Reserved BIT               0x40 */
#define   INQ_CmdQue_BIT                 0x02
#define   INQ_SftRe_BIT                  0x01

#define IS_RelAdr_DEV(inqp) \
    (int)(*((u8*)(inqp)+INQ_CAPABILITY_BYTE) & INQ_RelAdr_BIT)
#define IS_WBus32_DEV(inqp) \
    (int)(*((u8*)(inqp)+INQ_CAPABILITY_BYTE) & INQ_WBus32_BIT)
#define IS_WBus16_DEV(inqp) \
    (int)(*((u8*)(inqp)+INQ_CAPABILITY_BYTE) & INQ_WBus16_BIT)
#define IS_Sync_DEV(inqp) \
    (int)(*((u8*)(inqp)+INQ_CAPABILITY_BYTE) & INQ_Sync_BIT)
#define IS_Linked_DEV(inqp) \
    (int)(*((u8*)(inqp)+INQ_CAPABILITY_BYTE) & INQ_Linked_BIT)
#define IS_CmdQue_DEV(inqp) \
    (int)(*((u8*)(inqp)+INQ_CAPABILITY_BYTE) & INQ_CmdQue_BIT)
#define IS_SftRe_DEV(inqp) \
    (int)(*((u8*)(inqp)+INQ_CAPABILITY_BYTE) & INQ_SftRe_BIT)

#define INQ_Width_BITS \
    (INQ_WBus32_BIT | INQ_WBus16_BIT)
#define IS_Wide_DEV(inqp) \
    (int)(*((u8*)(inqp)+INQ_CAPABILITY_BYTE) & INQ_Width_BITS)


/*
 *      SCSI peripheral device types
 */
#define SCSI_TYPE_DAD               0x00  /* Direct Access Device */
#define SCSI_TYPE_SAD               0x01  /* Sequential Access Device */
#define SCSI_TYPE_TAPE  SCSI_TYPE_SAD
#define SCSI_TYPE_PRT               0x02  /* Printer */
#define SCSI_TYPE_PROC              0x03  /* Processor */
#define SCSI_TYPE_WORM              0x04
#define SCSI_TYPE_CDROM             0x05
#define SCSI_TYPE_SCAN              0x06  /* Scanner */
#define SCSI_TYPE_OPTICAL           0x07  /* Magneto/Optical */
#define SCSI_TYPE_CHANGER           0x08
#define SCSI_TYPE_COMM              0x09  /* Communications device */
#define SCSI_TYPE_UNKNOWN           0x1f
#define SCSI_TYPE_UNCONFIGURED_LUN  0x7f

#define SCSI_TYPE_MAX_KNOWN         SCSI_TYPE_COMM

/*
 *      Peripheral Qualifiers
 */
#define DEVICE_PRESENT     0x00
#define LUN_NOT_PRESENT    0x01
#define LUN_NOT_SUPPORTED  0x03

/*
 *      ANSI Versions
 */
#ifndef SCSI_1
#define SCSI_1  0x01
#endif
#ifndef SCSI_2
#define SCSI_2  0x02
#endif
#ifndef SCSI_3
#define SCSI_3  0x03
#endif