drivers/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(Scsi_Host_Template *);
  16 int seagate_st0x_command(Scsi_Cmnd *);
  17 int seagate_st0x_queue_command(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
  18 
  19 int seagate_st0x_abort(Scsi_Cmnd *);
  20 const char *seagate_st0x_info(void);
  21 int seagate_st0x_reset(Scsi_Cmnd *); 
  22 
  23 #ifndef NULL
  24         #define NULL 0
  25 #endif
  26 
  27 int seagate_st0x_biosparam(Disk *, int, int*);
  28 
  29 #define SEAGATE_ST0X  {NULL, "Seagate ST-01/ST-02", seagate_st0x_detect, \
  30                          NULL,                                          \
  31                          seagate_st0x_info, seagate_st0x_command,       \
  32                          seagate_st0x_queue_command, seagate_st0x_abort, \
  33                          seagate_st0x_reset, NULL, seagate_st0x_biosparam, \
  34                          1, 7, SG_ALL, 1, 0, 0, DISABLE_CLUSTERING}
  35 #endif
  36 
  37 
  38 /*
  39         defining PARITY causes parity data to be checked
  40 */
  41 
  42 #define PARITY
  43 
  44 
  45 /*
  46         Thanks to Brian Antoine for the example code in his Messy-Loss ST-01
  47                 driver, and Mitsugu Suzuki for information on the ST-01
  48                 SCSI host.
  49 */
  50 
  51 /*
  52         CONTROL defines
  53 */
  54 
  55 #define CMD_RST                 0x01
  56 #define CMD_SEL                 0x02
  57 #define CMD_BSY                 0x04
  58 #define CMD_ATTN                0x08
  59 #define CMD_START_ARB           0x10
  60 #define CMD_EN_PARITY           0x20
  61 #define CMD_INTR                0x40
  62 #define CMD_DRVR_ENABLE         0x80
  63 
  64 /*
  65         STATUS
  66 */
  67 
  68 #define STAT_BSY                0x01
  69 #define STAT_MSG                0x02
  70 #define STAT_IO                 0x04
  71 #define STAT_CD                 0x08
  72 #define STAT_REQ                0x10
  73 #define STAT_SEL                0x20
  74 #define STAT_PARITY             0x40
  75 #define STAT_ARB_CMPL           0x80
  76 
  77 /* 
  78         REQUESTS
  79 */
  80 
  81 #define REQ_MASK (STAT_CD |  STAT_IO | STAT_MSG)
  82 #define REQ_DATAOUT 0
  83 #define REQ_DATAIN STAT_IO
  84 #define REQ_CMDOUT STAT_CD
  85 #define REQ_STATIN (STAT_CD | STAT_IO)
  86 #define REQ_MSGOUT (STAT_MSG | STAT_CD)
  87 #define REQ_MSGIN (STAT_MSG | STAT_CD | STAT_IO)
  88 
  89 extern volatile int seagate_st0x_timeout;
  90 
  91 #ifdef PARITY
  92         #define BASE_CMD CMD_EN_PARITY
  93 #else
  94         #define BASE_CMD  0
  95 #endif
  96 
  97 /*
  98         Debugging code
  99 */
 100 
 101 #define PHASE_BUS_FREE 1
 102 #define PHASE_ARBITRATION 2
 103 #define PHASE_SELECTION 4
 104 #define PHASE_DATAIN 8 
 105 #define PHASE_DATAOUT 0x10
 106 #define PHASE_CMDOUT 0x20
 107 #define PHASE_MSGIN 0x40
 108 #define PHASE_MSGOUT 0x80
 109 #define PHASE_STATUSIN 0x100
 110 #define PHASE_ETC (PHASE_DATAIN | PHASE_DATA_OUT | PHASE_CMDOUT | PHASE_MSGIN | PHASE_MSGOUT | PHASE_STATUSIN)
 111 #define PRINT_COMMAND 0x200
 112 #define PHASE_EXIT 0x400
 113 #define PHASE_RESELECT 0x800
 114 #define DEBUG_FAST 0x1000
 115 #define DEBUG_SG   0x2000
 116 #define DEBUG_LINKED    0x4000
 117 #define DEBUG_BORKEN    0x8000
 118 
 119 /* 
 120  *      Control options - these are timeouts specified in .01 seconds.
 121  */
 122 
 123 /* 30, 20 work */
 124 #define ST0X_BUS_FREE_DELAY 25
 125 #define ST0X_SELECTION_DELAY 25
 126 
 127 #define eoi() __asm__("push %%eax\nmovb $0x20, %%al\noutb %%al, $0x20\npop %%eax"::)
 128         
 129 #define SEAGATE 1       /* these determine the type of the controller */
 130 #define FD      2
 131 
 132 
 133 #endif
 134
/* */
root/drivers/scsi/seagate.h

INCLUDED FROM
