zdbad.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:        zdbad.h,v $
   32  * Revision 2.3  91/07/31  18:08:16  dbg
   33  *      Changed copyright.
   34  *      [91/07/31            dbg]
   35  * 
   36  * Revision 2.2  91/05/08  13:08:08  dbg
   37  *      Adapted for pure Mach kernel.
   38  *      [90/10/04            dbg]
   39  * 
   40  */
   41 
   42 /*
   43  * $Header: zdbad.h,v 2.3 91/07/31 18:08:16 dbg Exp $
   44  *
   45  * zdbad.h
   46  *      ZDC bad block list and MFG defect list structure definitions
   47  */
   48 
   49 /*
   50  * Revision 1.1  89/07/05  13:21:05  kak
   51  * Initial revision
   52  * 
   53  */
   54 #ifndef _SQTZDC_ZDBAD_H_
   55 #define _SQTZDC_ZDBAD_H_
   56 
   57 #include <sys/types.h>
   58 
   59 #define BZ_NBADCOPY     5               /* number of bad block list copies */
   60 
   61 /*
   62  * structure of bad block list
   63  */
   64 
   65 struct zdbad {
   66         long    bz_csn;         /* bad block list checksum */
   67         u_short bz_nelem;       /* nbr of elements in list */
   68         u_short bz_nsnf;        /* nbr of BZ_SNF entries in list */
   69         struct  bz_bad {
   70                 struct  bz_diskaddr {
   71                         u_char  bd_sect;        /* sector */
   72                         u_char  bd_head;        /* head */
   73                         u_short bd_cyl   : 13,  /* cylinder */
   74                                 bd_rtype :  2,  /* replacement type */
   75                                 bd_ftype :  1;  /* failure type */
   76                 } bz_badaddr;                   /* Bad disk address */
   77                 struct diskaddr bz_rpladdr;     /* Replacement disk address */
   78         } bz_bad[1];            /* size is disk type dependent */
   79 };
   80 
   81 #define bz_cyl          bz_badaddr.bd_cyl
   82 #define bz_head         bz_badaddr.bd_head
   83 #define bz_sect         bz_badaddr.bd_sect
   84 #define bz_rtype        bz_badaddr.bd_rtype
   85 #define bz_ftype        bz_badaddr.bd_ftype
   86 
   87 /*
   88  * Replacement types
   89  */
   90 #define BZ_PHYS         0x0             /* Physical disk address */
   91 #define BZ_AUTOREVECT   0x1             /* Autorevector for replacement */
   92 #define BZ_SNF          0x2             /* SNF - driver must revector */ 
   93 
   94 /*
   95  * Failure types
   96  */
   97 #define BZ_BADHEAD      0x0
   98 #define BZ_BADDATA      0x1
   99 
  100 /*
  101  * Structure of manufacturer's defect list.
  102  */
  103 
  104 struct bad_mfg {
  105         long    bm_csn;         /* mfg's defect list checksum */
  106         u_short bm_nelem;       /* number of entries in bm_mfgbad */
  107 
  108         /* defect location */
  109         struct bm_mfgbad {
  110                 u_short bm_cyl;         /* cylinder */
  111                 u_short bm_len;         /* length of defect */
  112                 u_int   bm_pos  : 24,   /* bytes from index */
  113                         bm_head :  8;   /* head */
  114         } bm_mfgbad[1];         /* size is disk type dependent */
  115 };
  116 
  117 #endif  /* _SQTZDC_ZDBAD_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/sqtzdc/zdbad.h

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sys/sqtzdc/zdbad.h