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Annotation of linux/kernel/blk_drv/scsi/seagate.h, revision 1.1.1.2

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);
1.1.1.2 ! root       16: int seagate_st0x_command(unsigned char target, const void *cmnd,  void *buff, 
        !            17:        int bufflen);
        !            18: int seagate_st0x_queue_command(unsigned char target, const void *cmnd,  
        !            19:        void *buff,  int bufflen, void (*done)(int, int));
        !            20: 
1.1       root       21: int seagate_st0x_abort(int);
                     22: char *seagate_st0x_info(void);
                     23: int seagate_st0x_reset(void); 
                     24: 
                     25: #ifndef NULL
                     26:        #define NULL 0
                     27: #endif
                     28: 
                     29: #define SEAGATE_ST0X  {"Seagate ST-01/ST-02", seagate_st0x_detect,     \
                     30:                         seagate_st0x_info, seagate_st0x_command,       \
1.1.1.2 ! root       31:                         seagate_st0x_queue_command, seagate_st0x_abort, \
        !            32:                         seagate_st0x_reset, 1, 7, 0}
1.1       root       33: #endif
                     34: 
                     35: 
                     36: /*
                     37:        defining PARITY causes parity data to be checked
                     38: */
                     39: 
                     40: #define PARITY
                     41: 
                     42: /*
                     43:        defining ARBITRATE causes the arbitration sequence to be used.  And speed to drop by a 
                     44:        factor of ten.
                     45: */
                     46: 
                     47: #undef ARBITRATE
                     48: 
                     49: 
                     50: /*
                     51:        Thanks to Brian Antoine for the example code in his Messy-Loss ST-01
                     52:                driver, and Mitsugu Suzuki for information on the ST-01
                     53:                SCSI host.
                     54: */
                     55: 
                     56: /*
                     57:        CONTROL defines
                     58: */
                     59: 
                     60: #define CMD_RST                0x01
                     61: #define CMD_SEL                0x02
                     62: #define CMD_BSY                0x04
                     63: #define CMD_ATTN               0x08
                     64: #define CMD_START_ARB          0x10
                     65: #define CMD_EN_PARITY          0x20
                     66: #define CMD_INTR               0x40
                     67: #define CMD_DRVR_ENABLE                0x80
                     68: 
                     69: /*
                     70:        STATUS
                     71: */
                     72: 
                     73: #define STAT_BSY               0x01
                     74: #define STAT_MSG               0x02
                     75: #define STAT_IO                        0x04
                     76: #define STAT_CD                        0x08
                     77: #define STAT_REQ               0x10
                     78: #define STAT_SEL               0x20
                     79: #define STAT_PARITY            0x40
                     80: #define STAT_ARB_CMPL          0x80
                     81: 
                     82: /* 
                     83:        REQUESTS
                     84: */
                     85: 
                     86: #define REQ_MASK (STAT_CD |  STAT_IO | STAT_MSG)
                     87: #define REQ_DATAOUT 0
                     88: #define REQ_DATAIN STAT_IO
                     89: #define REQ_CMDOUT STAT_CD
                     90: #define REQ_STATIN (STAT_CD | STAT_IO)
                     91: #define REQ_MSGOUT (STAT_MSG | STAT_CD)
                     92: #define REQ_MSGIN (STAT_MSG | STAT_CD | STAT_IO)
                     93: 
                     94: extern volatile int seagate_st0x_timeout;
                     95: 
                     96: #ifdef PARITY
                     97:        #define BASE_CMD CMD_EN_PARITY
                     98: #else
                     99:        #define BASE_CMD  0
                    100: #endif
                    101: 
                    102: /*
                    103:        Debugging code
                    104: */
                    105: 
                    106: #define PHASE_BUS_FREE 1
                    107: #define PHASE_ARBITRATION 2
                    108: #define PHASE_SELECTION 4
                    109: #define PHASE_DATAIN 8 
                    110: #define PHASE_DATAOUT 0x10
                    111: #define PHASE_CMDOUT 0x20
                    112: #define PHASE_MSGIN 0x40
                    113: #define PHASE_MSGOUT 0x80
                    114: #define PHASE_STATUSIN 0x100
                    115: #define PHASE_ETC (PHASE_DATAIN | PHASE_DATA_OUT | PHASE_CMDOUT | PHASE_MSGIN | PHASE_MSGOUT | PHASE_STATUSIN)
                    116: #define PRINT_COMMAND 0x200
                    117: #define PHASE_EXIT 0x400
1.1.1.2 ! root      118: #define PHASE_RESELECT 0x800
1.1       root      119: 
                    120: /* 
1.1.1.2 ! root      121:  *     Control options - these are timeouts specified in .01 seconds.
        !           122:  */
1.1       root      123: 
                    124: #define ST0X_BUS_FREE_DELAY 25
1.1.1.2 ! root      125: #define ST0X_SELECTION_DELAY 3
        !           126: 
        !           127: #define eoi() __asm__("push %%eax\nmovb $0x20, %%al\noutb %%al, $0x20\npop %%eax"::)
        !           128:        
1.1       root      129: 
                    130: #endif
                    131: 

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