#ifndef DEVICES_SCSIDISK_H
#define DEVICES_SCSIDISK_H 1
/*
** scsidisk.h for ACE Basic
**
** Note: Translated to ACE by ConvertC2ACE
**       @ MapMeadow Software, Nils Sjoholm
**
**
** Date: 09/03/95
**
**
*/



/*
** This are the StructPointer defines for scsidisk.h
*/
#ifndef SCSICmdPtr
#define SCSICmdPtr ADDRESS
#endif
/*
** End of StructPointer defines for scsidisk.h
*/
      
#ifndef EXEC_TYPES_H
#include <exec/types.h>
#endif /* EXEC_TYPES_H */



/*--------------------------------------------------------------------
 *
 *   SCSI Command
 *  Several Amiga SCSI controller manufacturers are converging on
 *  standard ways to talk to their controllers.  This include
 *  file describes an exec-device command (e.g. for hddisk.device)
 *  that can be used to issue SCSI commands
 *
 *   UNIT NUMBERS
 *  Unit numbers to the OpenDevice call have encoded in them which
 *  SCSI device is being referred to.  The three decimal digits of
 *  the unit number refer to the SCSI Target ID (bus address) in
 *  the 1's digit,  the SCSI logical unit (LUN) in the 10's digit, 
 *  and the controller board in the 100's digit.
 *
 *  Examples:
 *        0 drive at address 0
 *       12 LUN 1 on multiple drive controller at address 2
 *      104 second controller board,  address 4
 *       88 not valid: both logical units and addresses
 *          range from 0..7.
 *
 *   CAVEATS
 *  Original 2090 code did not support this command.
 *
 *  Commodore 2090/2090A unit numbers are different.  The SCSI
 *  logical unit is the 100's digit,  and the SCSI Target ID
 *  is a permuted 1's digit: Target ID 0..6 maps to unit 3..9
 *  (7 is reserved for the controller).
 *
 *      Examples:
 *        3 drive at address 0
 *      109 drive at address 6,  logical unit 1
 *        1 not valid: this is not a SCSI unit.  Perhaps
 *          it's an ST506 unit.
 *
 *  Some controller boards generate a unique name (e.g. 2090A's
 *  iddisk.device) for the second controller board,  instead of
 *  implementing the 100's digit.
 *
 *  There are optional restrictions on the alignment,  bus
 *  accessability,  and size of the data for the data phase.
 *  Be conservative to work with all manufacturer's controllers.
 *
 *------------------------------------------------------------------*/

#define HD_SCSICMD  28  /* issue a SCSI command to the unit */
                /* io_Data points to a SCSICmd */
                /* io_Length is sizeof(STRUCT SCSICmd) */
                /* io_Actual and io_Offset are not used */

STRUCT SCSICmd  
    ADDRESS   scsi_Data       /* SHORTINT aligned data for SCSI Data Phase */
                /* (optional) data need not be byte aligned */
                /* (optional) data need not be bus accessable */
    LONGINT   scsi_Length     /* even length of Data area */
                /* (optional) data can have odd length */
                /* (optional) data length can be > 2**24 */
    LONGINT   scsi_Actual     /* actual Data used */
    ADDRESS   scsi_Command    /* SCSI Command (same options as scsi_Data) */
    SHORTINT   scsi_CmdLength  /* length of Command */
    SHORTINT   scsi_CmdActual  /* actual Command used */
    BYTE    scsi_Flags      /* includes intended data direction */
    BYTE    scsi_Status     /* SCSI status of command */
    ADDRESS   scsi_SenseData  /* sense data: filled if SCSIF_[OLD]AUTOSENSE */
                /* is set and scsi_Status has CHECK CONDITION */
                /* (bit 1) set */
    SHORTINT   scsi_SenseLength    /* size of scsi_SenseData,  also bytes to */
                /* request w/ SCSIF_AUTOSENSE,  must be 4..255 */
    SHORTINT   scsi_SenseActual    /* amount actually fetched (0 means no sense) */
END STRUCT 


/*----- scsi_Flags -----*/
#define SCSIF_WRITE     0   /* intended data direction is out */
#define SCSIF_READ      1   /* intended data direction is in */
#define SCSIB_READ_WRITE    0   /* (the bit to test) */

#define SCSIF_NOSENSE       0   /* no automatic request sense */
#define SCSIF_AUTOSENSE     2   /* do standard extended request sense */
                    /* on check condition */
#define SCSIF_OLDAUTOSENSE  6   /* do 4 byte non-extended request */
                    /* sense on check condition */
#define SCSIB_AUTOSENSE     1   /* (the bit to test) */
#define SCSIB_OLDAUTOSENSE  2   /* (the bit to test) */

/*----- SCSI io_Error values -----*/
#define HFERR_SelfUnit      40  /* cannot issue SCSI command to self */
#define HFERR_DMA       41  /* DMA error */
#define HFERR_Phase     42  /* illegal or unexpected SCSI phase */
#define HFERR_Parity        43  /* SCSI parity error */
#define HFERR_SelTimeout    44  /* Select timed out */
#define HFERR_BadStatus     45  /* status and/or sense error */

/*----- OpenDevice io_Error values -----*/
#define HFERR_NoBoard       50  /* Open failed for non-existant board */

#endif  /* DEVICES_SCSIDISK_H */