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      1 #ifndef CCISS_DEFS_H
      2 #define CCISS_DEFS_H
      3 
      4 #include <linux/types.h>
      5 
      6 /* general boundary definitions */
      7 #define SENSEINFOBYTES          32 /* note that this value may vary
      8 				      between host implementations */
      9 
     10 /* Command Status value */
     11 #define CMD_SUCCESS             0x0000
     12 #define CMD_TARGET_STATUS       0x0001
     13 #define CMD_DATA_UNDERRUN       0x0002
     14 #define CMD_DATA_OVERRUN        0x0003
     15 #define CMD_INVALID             0x0004
     16 #define CMD_PROTOCOL_ERR        0x0005
     17 #define CMD_HARDWARE_ERR        0x0006
     18 #define CMD_CONNECTION_LOST     0x0007
     19 #define CMD_ABORTED             0x0008
     20 #define CMD_ABORT_FAILED        0x0009
     21 #define CMD_UNSOLICITED_ABORT   0x000A
     22 #define CMD_TIMEOUT             0x000B
     23 #define CMD_UNABORTABLE		0x000C
     24 
     25 /* transfer direction */
     26 #define XFER_NONE               0x00
     27 #define XFER_WRITE              0x01
     28 #define XFER_READ               0x02
     29 #define XFER_RSVD               0x03
     30 
     31 /* task attribute */
     32 #define ATTR_UNTAGGED           0x00
     33 #define ATTR_SIMPLE             0x04
     34 #define ATTR_HEADOFQUEUE        0x05
     35 #define ATTR_ORDERED            0x06
     36 #define ATTR_ACA                0x07
     37 
     38 /* cdb type */
     39 #define TYPE_CMD				0x00
     40 #define TYPE_MSG				0x01
     41 
     42 /* Type defs used in the following structs */
     43 #define BYTE __u8
     44 #define WORD __u16
     45 #define HWORD __u16
     46 #define DWORD __u32
     47 
     48 #define CISS_MAX_LUN	1024
     49 
     50 #define LEVEL2LUN   1 /* index into Target(x) structure, due to byte swapping */
     51 #define LEVEL3LUN   0
     52 
     53 #pragma pack(1)
     54 
     55 /* Command List Structure */
     56 typedef union _SCSI3Addr_struct {
     57    struct {
     58     BYTE Dev;
     59     BYTE Bus:6;
     60     BYTE Mode:2;        /* b00 */
     61   } PeripDev;
     62    struct {
     63     BYTE DevLSB;
     64     BYTE DevMSB:6;
     65     BYTE Mode:2;        /* b01 */
     66   } LogDev;
     67    struct {
     68     BYTE Dev:5;
     69     BYTE Bus:3;
     70     BYTE Targ:6;
     71     BYTE Mode:2;        /* b10 */
     72   } LogUnit;
     73 } SCSI3Addr_struct;
     74 
     75 typedef struct _PhysDevAddr_struct {
     76   DWORD             TargetId:24;
     77   DWORD             Bus:6;
     78   DWORD             Mode:2;
     79   SCSI3Addr_struct  Target[2]; /* 2 level target device addr */
     80 } PhysDevAddr_struct;
     81 
     82 typedef struct _LogDevAddr_struct {
     83   DWORD            VolId:30;
     84   DWORD            Mode:2;
     85   BYTE             reserved[4];
     86 } LogDevAddr_struct;
     87 
     88 typedef union _LUNAddr_struct {
     89   BYTE               LunAddrBytes[8];
     90   SCSI3Addr_struct   SCSI3Lun[4];
     91   PhysDevAddr_struct PhysDev;
     92   LogDevAddr_struct  LogDev;
     93 } LUNAddr_struct;
     94 
     95 typedef struct _RequestBlock_struct {
     96   BYTE   CDBLen;
     97   struct {
     98     BYTE Type:3;
     99     BYTE Attribute:3;
    100     BYTE Direction:2;
    101   } Type;
    102   HWORD  Timeout;
    103   BYTE   CDB[16];
    104 } RequestBlock_struct;
    105 
    106 typedef union _MoreErrInfo_struct{
    107   struct {
    108     BYTE  Reserved[3];
    109     BYTE  Type;
    110     DWORD ErrorInfo;
    111   } Common_Info;
    112   struct{
    113     BYTE  Reserved[2];
    114     BYTE  offense_size; /* size of offending entry */
    115     BYTE  offense_num;  /* byte # of offense 0-base */
    116     DWORD offense_value;
    117   } Invalid_Cmd;
    118 } MoreErrInfo_struct;
    119 typedef struct _ErrorInfo_struct {
    120   BYTE               ScsiStatus;
    121   BYTE               SenseLen;
    122   HWORD              CommandStatus;
    123   DWORD              ResidualCnt;
    124   MoreErrInfo_struct MoreErrInfo;
    125   BYTE               SenseInfo[SENSEINFOBYTES];
    126 } ErrorInfo_struct;
    127 
    128 #pragma pack()
    129 
    130 #endif /* CCISS_DEFS_H */
    131