i386/linux/linux-0.99/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(int);
  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 *, int);
  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 #ifdef CONFIG_BLK_DEV_SD
  28 int seagate_st0x_biosparam(int, int, int*);
  29 #else
  30 #define seagate_st0x_biosparam NULL
  31 #endif
  32
  33 #define SEAGATE_ST0X  {"Seagate ST-01/ST-02", seagate_st0x_detect,      \
  34                          seagate_st0x_info, seagate_st0x_command,       \
  35                          seagate_st0x_queue_command, seagate_st0x_abort, \
  36                          seagate_st0x_reset, NULL, seagate_st0x_biosparam, \
  37                          1, 7, SG_ALL, 1, 0, 0}
  38 #endif
  39
  40
  41 /*
  42         defining PARITY causes parity data to be checked
  43 */
  44
  45 #define PARITY
  46
  47
  48 /*
  49         Thanks to Brian Antoine for the example code in his Messy-Loss ST-01
  50                 driver, and Mitsugu Suzuki for information on the ST-01
  51                 SCSI host.
  52 */
  53
  54 /*
  55         CONTROL defines
  56 */
  57
  58 #define CMD_RST                 0x01
  59 #define CMD_SEL                 0x02
  60 #define CMD_BSY                 0x04
  61 #define CMD_ATTN                0x08
  62 #define CMD_START_ARB           0x10
  63 #define CMD_EN_PARITY           0x20
  64 #define CMD_INTR                0x40
  65 #define CMD_DRVR_ENABLE         0x80
  66
  67 /*
  68         STATUS
  69 */
  70
  71 #define STAT_BSY                0x01
  72 #define STAT_MSG                0x02
  73 #define STAT_IO                 0x04
  74 #define STAT_CD                 0x08
  75 #define STAT_REQ                0x10
  76 #define STAT_SEL                0x20
  77 #define STAT_PARITY             0x40
  78 #define STAT_ARB_CMPL           0x80
  79
  80 /*
  81         REQUESTS
  82 */
  83
  84 #define REQ_MASK (STAT_CD |  STAT_IO | STAT_MSG)
  85 #define REQ_DATAOUT 0
  86 #define REQ_DATAIN STAT_IO
  87 #define REQ_CMDOUT STAT_CD
  88 #define REQ_STATIN (STAT_CD | STAT_IO)
  89 #define REQ_MSGOUT (STAT_MSG | STAT_CD)
  90 #define REQ_MSGIN (STAT_MSG | STAT_CD | STAT_IO)
  91
  92 extern volatile int seagate_st0x_timeout;
  93
  94 #ifdef PARITY
  95         #define BASE_CMD CMD_EN_PARITY
  96 #else
  97         #define BASE_CMD  0
  98 #endif
  99
 100 /*
 101         Debugging code
 102 */
 103
 104 #define PHASE_BUS_FREE 1
 105 #define PHASE_ARBITRATION 2
 106 #define PHASE_SELECTION 4
 107 #define PHASE_DATAIN 8
 108 #define PHASE_DATAOUT 0x10
 109 #define PHASE_CMDOUT 0x20
 110 #define PHASE_MSGIN 0x40
 111 #define PHASE_MSGOUT 0x80
 112 #define PHASE_STATUSIN 0x100
 113 #define PHASE_ETC (PHASE_DATAIN | PHASE_DATA_OUT | PHASE_CMDOUT | PHASE_MSGIN | PHASE_MSGOUT | PHASE_STATUSIN)
 114 #define PRINT_COMMAND 0x200
 115 #define PHASE_EXIT 0x400
 116 #define PHASE_RESELECT 0x800
 117 #define DEBUG_FAST 0x1000
 118 #define DEBUG_SG   0x2000
 119 #define DEBUG_LINKED    0x4000
 120 #define DEBUG_BORKEN    0x8000
 121
 122 /*
 123  *      Control options - these are timeouts specified in .01 seconds.
 124  */
 125
 126 /* 30, 20 work */
 127 #define ST0X_BUS_FREE_DELAY 25
 128 #define ST0X_SELECTION_DELAY 25
 129
 130 #define eoi() __asm__("push %%eax\nmovb $0x20, %%al\noutb %%al, $0x20\npop %%eax"::)
 131
 132 #define SEAGATE 1       /* these determine the type of the controller */
 133 #define FD      2
 134
 135
 136 #endif
 137