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FreeBSD/Linux Kernel Cross Reference
sys/sqtsec/scsi.h

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    1 /* 
    2  * Mach Operating System
    3  * Copyright (c) 1991 Carnegie Mellon University
    4  * Copyright (c) 1991 Sequent Computer Systems
    5  * All Rights Reserved.
    6  * 
    7  * Permission to use, copy, modify and distribute this software and its
    8  * documentation is hereby granted, provided that both the copyright
    9  * notice and this permission notice appear in all copies of the
   10  * software, derivative works or modified versions, and any portions
   11  * thereof, and that both notices appear in supporting documentation.
   12  * 
   13  * CARNEGIE MELLON AND SEQUENT COMPUTER SYSTEMS ALLOW FREE USE OF
   14  * THIS SOFTWARE IN ITS "AS IS" CONDITION.  CARNEGIE MELLON AND
   15  * SEQUENT COMPUTER SYSTEMS DISCLAIM ANY LIABILITY OF ANY KIND FOR
   16  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   17  * 
   18  * Carnegie Mellon requests users of this software to return to
   19  * 
   20  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   21  *  School of Computer Science
   22  *  Carnegie Mellon University
   23  *  Pittsburgh PA 15213-3890
   24  * 
   25  * any improvements or extensions that they make and grant Carnegie Mellon 
   26  * the rights to redistribute these changes.
   27  */
   28 
   29 /*
   30  * HISTORY
   31  * $Log:        scsi.h,v $
   32  * Revision 2.3  91/07/31  18:07:04  dbg
   33  *      Changed copyright.
   34  *      [91/07/31            dbg]
   35  * 
   36  * Revision 2.2  91/05/08  13:06:26  dbg
   37  *      Added, from Sequent SYMMETRY sources.
   38  *      [91/02/26            dbg]
   39  * 
   40  */
   41 
   42 /*
   43  * $Header: scsi.h,v 2.3 91/07/31 18:07:04 dbg Exp $
   44  *
   45  * Supported SCSI commands
   46  */
   47 
   48 /*
   49  * Revision 1.1  89/07/05  13:20:13  kak
   50  * Initial revision
   51  * 
   52  */
   53 
   54 #ifndef _SQT_SCSI_H_
   55 #define _SQT_SCSI_H_
   56 
   57 /* class 00 commands */
   58 #define SCSI_TEST       0x00            /* test unit ready */
   59 #define SCSI_REZERO     0x01            /* rezero unit */
   60 #define SCSI_RSENSE     0x03            /* request sense */
   61 #define SCSI_FORMAT     0x04            /* format unit */
   62 #define SCSI_READ       0x08            /* read */
   63 #define SCSI_WRITE      0x0a            /* write */
   64 #define SCSI_SEEK       0x0b            /* seek */
   65 #define SCSI_TRAN       0x0f            /* translate logical to phys */
   66 #define SCSI_INQUIRY    0x12            /* do inquiry */
   67 #define SCSI_WRITEB     0x13            /* write buffer */
   68 #define SCSI_READB      0x14            /* read buffer */
   69 #define SCSI_MODES      0x15            /* mode select */
   70 #define SCSI_RESRV      0x16            /* reserve unit */
   71 #define SCSI_RELSE      0x17            /* release unit */
   72 #define SCSI_MSENSE     0x1a            /* mode sense */
   73 #define SCSI_STARTOP    0x1b            /* start/stop unit */
   74 #define         SCSI_START_UNIT         0x01
   75 #define         SCSI_STOP_UNIT          0x00
   76 #define SCSI_RDIAG      0x1c            /* receive diagnostic */
   77 #define SCSI_SDIAG      0x1d            /* send diagnostic */
   78 #define         SCSI_SDIAG_REINIT       0x60
   79 #define         SCSI_SDIAG_DUMP_HW      0x61
   80 #define         SCSI_SDIAG_DUMP_RAM     0x62
   81 #define         SCSI_SDIAG_PATCH_HW     0x63
   82 #define         SCSI_SDIAG_PATCH_RAM    0x64
   83 #define         SCSI_SDIAG_SET_RD_ERR   0x65
   84 #define                 SCSI_SDIAG_RD_ERR_DEF   0x00
   85 #define                 SCSI_SDIAG_RD_ERR_RPT   0x01
   86 #define                 SCSI_SDIAG_RD_ERR_NOC   0x02
   87 
   88 /* class 01 commands */
   89 #define SCSI_READC      0x25            /* read capacity */
   90 #define         SCSI_FULL_CAP           0x00
   91 #define         SCSI_PART_CAP           0x01
   92 
   93 /*
   94  * unsupported SCSI commands
   95  */
   96 #define SCSI_SET_THRESHOLD      0x10
   97 #define SCSI_RD_USAGE_CTRS      0x11
   98 #define SCSI_READ_EXTENDED      0x28
   99 #define SCSI_WRITE_EXTENDED     0x2A
  100 #define SCSI_WRITE_AND_VERIFY   0x2E
  101 #define SCSI_VERIFY             0x2F
  102 #define SCSI_SEARCH_DATA_EQUAL  0x31
  103 #define SCSI_SET_LIMITS         0x33
  104 
  105 /*
  106  * Tape commands
  107  */
  108 #define SCSI_REWIND     0x01            /* Rewind command */
  109 #define SCSI_RETENSION  0x02            /* Retention a tape */
  110 #define SCSI_WFM        0x10            /* Write a file mark */
  111 #define SCSI_SPACE      0x11            /* Space (default blocks) fwd */
  112 #define SCSI_ERASE      0x19            /* Erase a tape */
  113 
  114 /*
  115  * Sizes of data transferred for some standard commands
  116  */
  117 #define SIZE_CAP        8       /* nbr bytes in Read Capacity input data */
  118 #define SIZE_TRANS      8       /* nbr bytes in Translate input data */
  119 
  120 /*
  121  * structure for SCSI mode select command
  122  */
  123 #define SCSI_MODES_ILEN         22      /* bytes in data block */
  124 #define SCSI_MODES_DLEN         8       /* length of extent descriptor list */
  125 
  126 struct  scsi_modes {
  127                         /* command list */
  128         u_char  m_type;         /* command type */
  129         u_char  m_unit;         /* upper 3 bits are unit */
  130         u_char  m_pad1[2];      /* reserved */
  131         u_char  m_ilen;         /* length of info passed */
  132         u_char  m_cont;         /* control byte */
  133                         /* parameter list */
  134         u_char  m_pad2[3];      /* reserved */
  135         u_char  m_dlen;         /* length of descript list */
  136                         /* extent descriptor list */
  137         u_char  m_density;      /* density code */
  138         u_char  m_pad3[4];      /* reserved */
  139         u_char  m_bsize[3];     /* block size */
  140                         /* drive parameter list */
  141         u_char  m_fcode;        /* format code */
  142         u_char  m_cyls[2];      /* cylinder count */
  143         u_char  m_heads;        /* data head count */
  144         u_char  m_rwcc[2];      /* reduced write current cylinder */
  145         u_char  m_wpc[2];       /* write precompensation cylinder */
  146         char    m_lzone;        /* landing zone position */
  147         u_char  m_srate;        /* step pulse output rate code */
  148 };
  149 
  150 /* 
  151  * structures for SCSI format command
  152  */
  153 struct dlist {                  /* defect list entries */
  154         u_char  d_cyls[3];      /* cyl of defect */
  155         u_char  d_heads;        /* head nbr */
  156         u_char  d_bytes[4];     /* bytes from index */
  157 };
  158 
  159 #define FORMAT_BUF      1024    /* max bytes for Format Data */
  160 #define MAX_DEFECTS     (FORMAT_BUF / sizeof(struct dlist))
  161 
  162 struct  scsi_fmt {
  163                         /* command list */
  164         u_char  f_type;         /* command type */
  165         u_char  f_misc;         /* 3 bit unit, data flag, complete list bits */
  166         u_char  f_data;         /* data pattern */
  167         u_char  f_ileave[2];    /* interleave */
  168         u_char  f_pad1;         /* reserved */
  169                         /* defect list */
  170         u_char  f_full;         /* full or cyl flag */
  171         u_char  f_spares;       /* nbr spares/cyl */
  172         u_char  f_dlen[2];      /* length of defect list blocks */
  173         struct dlist dlist[MAX_DEFECTS]; /* blocks of defect list */
  174 };
  175 
  176 /*
  177  * scsi_fmt.f_misc flags
  178  */
  179 #define FMT_BBL_DATA    0x10            /* bbl data exists */
  180 #define FMT_CMPLT       0x08            /* bbl data is complete */
  181 #define FMT_USER_FMT    0x04            /* use user-supplied fmt data */
  182 #define FMT_DATA        0x02            /* use user-supplied data pattern */
  183 #define FMT_ALL         (FMT_BBL_DATA | FMT_CMPLT | FMT_USER_FMT | FMT_DATA)
  184 
  185 /*
  186  * scsi_fmt.f_data
  187  */
  188 #define FMT_PAT         0x6D            /* worst winchester data */
  189 
  190 /*
  191  * scsi_fmt.f_full flags
  192  */
  193 #define FMT_FULL        0x00            /* complete drive */
  194 #define FMT_CYL         0x01            /* single cylinder */
  195 
  196 /*
  197  * scsi_fmt.f_code
  198  */
  199 #define FMT_FCODE       0x01            /* must be 1 */
  200 
  201 /*
  202  * SCSI_UNIT Macro:
  203  *      bits 0-2: unit number on the hardware (up to 8)
  204  *      bits 3-5: target number (up to 8)
  205  *      bits 6-8: drive  type (up to 8), index into configuration table 
  206  *      bits 9-11: SEC board number
  207  *
  208  *      On embedded SCSI, the unit number is always 0.
  209  */
  210 #define SCSI_UNIT(x)    (((x)>>0)&7)
  211 #define SCSI_TARGET(x)  (((x)>>3)&7)
  212 #define SCSI_TYPE(x)    (((x)>>6)&7)
  213 #define SCSI_BOARD(x)   (((x)>>9)&7)
  214 #define SCSI_DEVNO(x)   (SDEV_SCSISTART + (SCSI_TARGET((x))<<3) + (SCSI_UNIT((x))) )
  215 
  216 #endif  /* _SQT_SCSI_H_ */

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