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Annotation of linux/kernel/blk_drv/scsi/seagate.h, revision 1.1

1.1     ! root        1: /*
        !             2:  *     seagate.h Copyright (C) 1992 Drew Eckhardt 
        !             3:  *     low level scsi driver header for ST01/ST02 by
        !             4:  *             Drew Eckhardt 
        !             5:  *
        !             6:  *     <[email protected]>
        !             7:  */
        !             8: 
        !             9: #ifndef _SEAGATE_H
        !            10:        #define SEAGATE_H
        !            11: /*
        !            12:        $Header
        !            13: */
        !            14: #ifndef ASM
        !            15: int seagate_st0x_detect(int);
        !            16: int seagate_st0x_command(unsigned char target, const void *cmnd,  void *buff, int bufflen);
        !            17: int seagate_st0x_abort(int);
        !            18: char *seagate_st0x_info(void);
        !            19: int seagate_st0x_reset(void); 
        !            20: 
        !            21: #ifndef NULL
        !            22:        #define NULL 0
        !            23: #endif
        !            24: 
        !            25: #define SEAGATE_ST0X  {"Seagate ST-01/ST-02", seagate_st0x_detect,     \
        !            26:                         seagate_st0x_info, seagate_st0x_command,       \
        !            27:                         NULL, seagate_st0x_abort, seagate_st0x_reset,  \
        !            28:                         0, 7, 0}
        !            29: #endif
        !            30: 
        !            31: 
        !            32: /*
        !            33:        defining PARITY causes parity data to be checked
        !            34: */
        !            35: 
        !            36: #define PARITY
        !            37: 
        !            38: /*
        !            39:        defining ARBITRATE causes the arbitration sequence to be used.  And speed to drop by a 
        !            40:        factor of ten.
        !            41: */
        !            42: 
        !            43: #undef ARBITRATE
        !            44: 
        !            45: 
        !            46: /*
        !            47:        Thanks to Brian Antoine for the example code in his Messy-Loss ST-01
        !            48:                driver, and Mitsugu Suzuki for information on the ST-01
        !            49:                SCSI host.
        !            50: */
        !            51: 
        !            52: /*
        !            53:        CONTROL defines
        !            54: */
        !            55: 
        !            56: #define CMD_RST                0x01
        !            57: #define CMD_SEL                0x02
        !            58: #define CMD_BSY                0x04
        !            59: #define CMD_ATTN               0x08
        !            60: #define CMD_START_ARB          0x10
        !            61: #define CMD_EN_PARITY          0x20
        !            62: #define CMD_INTR               0x40
        !            63: #define CMD_DRVR_ENABLE                0x80
        !            64: 
        !            65: /*
        !            66:        STATUS
        !            67: */
        !            68: 
        !            69: #define STAT_BSY               0x01
        !            70: #define STAT_MSG               0x02
        !            71: #define STAT_IO                        0x04
        !            72: #define STAT_CD                        0x08
        !            73: #define STAT_REQ               0x10
        !            74: #define STAT_SEL               0x20
        !            75: #define STAT_PARITY            0x40
        !            76: #define STAT_ARB_CMPL          0x80
        !            77: 
        !            78: /* 
        !            79:        REQUESTS
        !            80: */
        !            81: 
        !            82: #define REQ_MASK (STAT_CD |  STAT_IO | STAT_MSG)
        !            83: #define REQ_DATAOUT 0
        !            84: #define REQ_DATAIN STAT_IO
        !            85: #define REQ_CMDOUT STAT_CD
        !            86: #define REQ_STATIN (STAT_CD | STAT_IO)
        !            87: #define REQ_MSGOUT (STAT_MSG | STAT_CD)
        !            88: #define REQ_MSGIN (STAT_MSG | STAT_CD | STAT_IO)
        !            89: 
        !            90: extern volatile int seagate_st0x_timeout;
        !            91: 
        !            92: #ifdef PARITY
        !            93:        #define BASE_CMD CMD_EN_PARITY
        !            94: #else
        !            95:        #define BASE_CMD  0
        !            96: #endif
        !            97: 
        !            98: /*
        !            99:        Debugging code
        !           100: */
        !           101: 
        !           102: #define PHASE_BUS_FREE 1
        !           103: #define PHASE_ARBITRATION 2
        !           104: #define PHASE_SELECTION 4
        !           105: #define PHASE_DATAIN 8 
        !           106: #define PHASE_DATAOUT 0x10
        !           107: #define PHASE_CMDOUT 0x20
        !           108: #define PHASE_MSGIN 0x40
        !           109: #define PHASE_MSGOUT 0x80
        !           110: #define PHASE_STATUSIN 0x100
        !           111: #define PHASE_ETC (PHASE_DATAIN | PHASE_DATA_OUT | PHASE_CMDOUT | PHASE_MSGIN | PHASE_MSGOUT | PHASE_STATUSIN)
        !           112: #define PRINT_COMMAND 0x200
        !           113: #define PHASE_EXIT 0x400
        !           114: 
        !           115: /* 
        !           116:        Control options - these are timeouts specified in .01 seconds.
        !           117: */
        !           118: 
        !           119: #define ST0X_BUS_FREE_DELAY 25
        !           120: #define ST0X_SELECTION_DELAY 25
        !           121: 
        !           122: #endif
        !           123: 

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