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Annotation of linux/kernel/blk_drv/scsi/seagate.h, revision 1.1.1.1

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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