sys/scsi/scsi_disk.h


/*
 * HISTORY
 * $Log:        scsi_disk.h,v $
 * Revision 1.1.1.1  1993/06/12  14:57:27  rgrimes
 * Initial import, 0.1 + pk 0.2.4-B1
 *
 * Revision 1.2  1992/10/13  03:14:21  julian
 * added the load-eject field in 'start/stop' for removable devices.
 *
 * Revision 1.1  1992/09/26  22:11:29  julian
 * Initial revision
 *
 */

/*
 * SCSI interface description
 */

/*
 * Some lines of this file comes from a file of the name "scsi.h"
 * distributed by OSF as part of mach2.5,
 *  so the following disclaimer has been kept.
 *
 * Copyright 1990 by Open Software Foundation,
 * Grenoble, FRANCE
 *
 *              All Rights Reserved
 *
 *   Permission to use, copy, modify, and distribute this software and
 * its documentation for any purpose and without fee is hereby granted,
 * provided that the above copyright notice appears in all copies and
 * that both the copyright notice and this permission notice appear in
 * supporting documentation, and that the name of OSF or Open Software
 * Foundation not be used in advertising or publicity pertaining to
 * distribution of the software without specific, written prior
 * permission.
 *
 *   OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
 * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
 * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/*
 * Largely written by Julian Elischer (julian@tfs.com)
 * for TRW Financial Systems.
 *
 * TRW Financial Systems, in accordance with their agreement with Carnegie
 * Mellon University, makes this software available to CMU to distribute
 * or use in any manner that they see fit as long as this message is kept with
 * the software. For this reason TFS also grants any other persons or
 * organisations permission to use or modify this software.
 *
 * TFS supplies this software to be publicly redistributed
 * on the understanding that TFS is not responsible for the correct
 * functioning of this software in any circumstances.
 *
 */

/*
 * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
 */

/*
 * SCSI command format
 */


struct scsi_reassign_blocks
{
        u_char  op_code;
        u_char  :5;
        u_char  lun:3;
        u_char  unused[3];
        u_char  link:1;
        u_char  flag:1;
        u_char  :6;
};

struct scsi_rw
{
        u_char  op_code;
        u_char  addr_2:5;       /* Most significant */
        u_char  lun:3;
        u_char  addr_1;
        u_char  addr_0;         /* least significant */
        u_char  length;
        u_char  link:1;
        u_char  flag:1;
        u_char  :6;
};

struct scsi_rw_big
{
        u_char  op_code;
        u_char  rel_addr:1;
        u_char  :4;     /* Most significant */
        u_char  lun:3;
        u_char  addr_3;
        u_char  addr_2;
        u_char  addr_1;
        u_char  addr_0;         /* least significant */
        u_char  reserved;;
        u_char  length2;
        u_char  length1;
        u_char  link:1;
        u_char  flag:1;
        u_char  :4;
        u_char  vendor:2;
};

struct scsi_read_capacity
{
        u_char  op_code;
        u_char  :5;
        u_char  lun:3;
        u_char  addr_3; /* Most Significant */
        u_char  addr_2;
        u_char  addr_1;
        u_char  addr_0; /* Least Significant */
        u_char  unused[3];
        u_char  link:1;
        u_char  flag:1;
        u_char  :6;
};

struct scsi_start_stop
{
        u_char  op_code;
        u_char  :5;
        u_char  lun:3;
        u_char  unused[2];
        u_char  start:1;
        u_char  loej:1;
        u_char  :6;
        u_char  link:1;
        u_char  flag:1;
        u_char  :6;
};


/*
 * Opcodes
 */

#define REASSIGN_BLOCKS         0x07
#define READ_COMMAND            0x08
#define WRITE_COMMAND           0x0a
#define MODE_SELECT             0x15
#define MODE_SENSE              0x1a
#define START_STOP              0x1b
#define PREVENT_ALLOW           0x1e
#define READ_CAPACITY           0x25
#define READ_BIG                0x28
#define WRITE_BIG               0x2a


struct scsi_read_cap_data
{
        u_char  addr_3; /* Most significant */
        u_char  addr_2;
        u_char  addr_1;
        u_char  addr_0; /* Least significant */
        u_char  length_3;       /* Most significant */
        u_char  length_2;
        u_char  length_1;
        u_char  length_0;       /* Least significant */
};

struct scsi_reassign_blocks_data
{
        u_char  reserved[2];
        u_char  length_msb;
        u_char  length_lsb;
        struct
        {
                u_char  dlbaddr_3;      /* defect logical block address (MSB) */
                u_char  dlbaddr_2;
                u_char  dlbaddr_1;
                u_char  dlbaddr_0;      /* defect logical block address (LSB) */
        } defect_descriptor[1];
};

union   disk_pages /* this is the structure copied from osf */
{
        struct page_disk_format {
           u_char pg_code:6;    /* page code (should be 3)            */
           u_char :2;
           u_char pg_length;    /* page length (should be 0x16)       */
           u_char trk_z_1;      /* tracks per zone (MSB)              */
           u_char trk_z_0;      /* tracks per zone (LSB)              */
           u_char alt_sec_1;    /* alternate sectors per zone (MSB)   */
           u_char alt_sec_0;    /* alternate sectors per zone (LSB)   */
           u_char alt_trk_z_1;  /* alternate tracks per zone (MSB)    */
           u_char alt_trk_z_0;  /* alternate tracks per zone (LSB)    */
           u_char alt_trk_v_1;  /* alternate tracks per volume (MSB)  */
           u_char alt_trk_v_0;  /* alternate tracks per volume (LSB)  */
           u_char ph_sec_t_1;   /* physical sectors per track (MSB)   */
           u_char ph_sec_t_0;   /* physical sectors per track (LSB)   */
           u_char bytes_s_1;    /* bytes per sector (MSB)             */
           u_char bytes_s_0;    /* bytes per sector (LSB)             */
           u_char interleave_1;/* interleave (MSB)                    */
           u_char interleave_0;/* interleave (LSB)                    */
           u_char trk_skew_1;   /* track skew factor (MSB)            */
           u_char trk_skew_0;   /* track skew factor (LSB)            */
           u_char cyl_skew_1;   /* cylinder skew (MSB)                */
           u_char cyl_skew_0;   /* cylinder skew (LSB)                */
           u_char reserved1:4;
           u_char surf:1;
           u_char rmb:1;
           u_char hsec:1;
           u_char ssec:1;
           u_char reserved2;
           u_char reserved3;
        } disk_format;
        struct page_rigid_geometry {
           u_char pg_code:7;    /* page code (should be 4)            */
           u_char mbone:1;      /* must be one                        */
           u_char pg_length;    /* page length (should be 0x16)       */
           u_char ncyl_2;       /* number of cylinders (MSB)          */
           u_char ncyl_1;       /* number of cylinders                */
           u_char ncyl_0;       /* number of cylinders (LSB)          */
           u_char nheads;       /* number of heads                    */
           u_char st_cyl_wp_2;  /* starting cyl., write precomp (MSB) */
           u_char st_cyl_wp_1;  /* starting cyl., write precomp       */
           u_char st_cyl_wp_0;  /* starting cyl., write precomp (LSB) */
           u_char st_cyl_rwc_2;/* starting cyl., red. write cur (MSB)*/
           u_char st_cyl_rwc_1;/* starting cyl., red. write cur      */
           u_char st_cyl_rwc_0;/* starting cyl., red. write cur (LSB)*/
           u_char driv_step_1;  /* drive step rate (MSB)              */
           u_char driv_step_0;  /* drive step rate (LSB)              */
           u_char land_zone_2;  /* landing zone cylinder (MSB)        */
           u_char land_zone_1;  /* landing zone cylinder              */
           u_char land_zone_0;  /* landing zone cylinder (LSB)        */
           u_char reserved1;
           u_char reserved2;
           u_char reserved3;
        } rigid_geometry;
} ;