kernel/blk_drv/scsi/seagate.h

/* */
   1 /*
   2  *      seagate.h Copyright (C) 1992 Drew Eckhardt 
   3  *      low level scsi driver header for ST01/ST02 by
   4  *              Drew Eckhardt 
   5  *
   6  *      <drew@colorado.edu>
   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, 
  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 
  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,       \
  31                          seagate_st0x_queue_command, seagate_st0x_abort, \
  32                          seagate_st0x_reset, 1, 7, 0}
  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
 118 #define PHASE_RESELECT 0x800
 119 
 120 /* 
 121  *      Control options - these are timeouts specified in .01 seconds.
 122  */
 123 
 124 #define ST0X_BUS_FREE_DELAY 25
 125 #define ST0X_SELECTION_DELAY 3
 126 
 127 #define eoi() __asm__("push %%eax\nmovb $0x20, %%al\noutb %%al, $0x20\npop %%eax"::)
 128         
 129 
 130 #endif
 131
/* */
root/kernel/blk_drv/scsi/seagate.h

INCLUDED FROM
