bsd/dev/disk.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*      @(#)disk.h      1.0     08/29/87        (c) 1987 NeXT   */
  23
  24 /*
  25  * HISTORY
  26  * 28-Mar-92  Doug Mitchell
  27  *      Moved disk_label struct to <bsd/dev/disk_label.h>.
  28  *
  29  * 22-May-91  Gregg Kellogg (gk) at NeXT
  30  *      Split out public interface.
  31  *
  32  * 20-Jul-90  Doug Mitchell
  33  *      Added DKIOCSFORMAT, DKIOCGFORMAT
  34  *
  35  * 16-Apr-90  Doug Mitchell at NeXT
  36  *      Added DKIOCPANELPRT.
  37  *
  38  * 25-Mar-90  John Seamons (jks) at NeXT
  39  *      Removed obsolete DKIOCNOTIFY and DKIOCINSERT.
  40  *
  41  * 23-Mar-90  Doug Mitchell
  42  *      Added DKIOCEJECT.
  43  *
  44  * 14-Feb-90  Doug Mitchell at NeXT
  45  *      Added DKIOCMNOTIFY.
  46  *
  47  * 16-Mar-88  John Seamons (jks) at NeXT
  48  *      Cleaned up to support standard disk label definitions.
  49  *
  50  * 24-Feb-88  Mike DeMoney (mike) at NeXT
  51  *      Added defines for dl_bootfile and dl_boot0_blkno.
  52  *      Reduced NBAD to allow for these entries in disktab.
  53  *
  54  * 29-Aug-87  John Seamons (jks) at NeXT
  55  *      Created.
  56  *
  57  */
  58
  59 #ifndef _BSD_DEV_DISK_
  60 #define _BSD_DEV_DISK_
  61
  62 #include <mach/machine/vm_types.h>
  63 #include <mach/machine/boolean.h>
  64 #include <sys/types.h>
  65 #include <sys/ioctl.h>
  66 #include <sys/time.h>
  67 #include <dev/disk_label.h>
  68
  69 #define DR_CMDSIZE      32
  70 #define DR_ERRSIZE      32
  71
  72 struct disk_req {
  73         int     dr_bcount;              /* byte count for data transfers */
  74         caddr_t dr_addr;                /* memory addr for data transfers */
  75         struct  timeval dr_exec_time;   /* execution time of operation */
  76
  77         /*
  78          * interpretation of cmdblk and errblk is driver specific.
  79          */
  80         char    dr_cmdblk[DR_CMDSIZE];
  81         char    dr_errblk[DR_ERRSIZE];
  82 };
  83
  84 struct sdc_wire {
  85         vm_offset_t     start, end;
  86         boolean_t       new_pageable;
  87 };
  88
  89
  90 #define BAD_BLK_OFF     4               /* offset of bad blk tbl from label */
  91 #define NBAD_BLK        (12 * 1024 / sizeof (int))
  92
  93 struct bad_block {                      /* bad block table, sized to be 12KB */
  94         int     bad_blk[NBAD_BLK];
  95 };
  96
  97 /*
  98  * sector bitmap states (2 bits per sector)
  99  */
 100 #define SB_UNTESTED     0               /* must be zero */
 101 #define SB_BAD          1
 102 #define SB_WRITTEN      2
 103 #define SB_ERASED       3
 104
 105 struct drive_info {                     /* info about drive hardware */
 106         char    di_name[MAXDNMLEN];     /* drive type name */
 107         int     di_label_blkno[NLABELS];/* label loc'ns in DEVICE SECTORS */
 108         int     di_devblklen;           /* device sector size */
 109         int     di_maxbcount;           /* max bytes per transfer request */
 110 };
 111
 112 #define DS_STATSIZE     32
 113
 114 struct  disk_stats {
 115         int     s_ecccnt;       /* avg ECC corrections per sector */
 116         int     s_maxecc;       /* max ECC corrections observed */
 117
 118         /*
 119          * interpretation of s_stats is driver specific
 120          */
 121         char    s_stats[DS_STATSIZE];
 122 };
 123
 124 struct drive_location {
 125         char    location[ 128 ];
 126 };
 127
 128 #define DKIOCGLABEL     _IOR('d', 0,struct disk_label)  /* read label */
 129 #define DKIOCSLABEL     _IOW('d', 1,struct disk_label)  /* write label */
 130 #define DKIOCGBITMAP    _IO('d', 2)                     /* read bitmap */
 131 #define DKIOCSBITMAP    _IO('d', 3)                     /* write bitmap */
 132 #define DKIOCREQ        _IOWR('d', 4, struct disk_req)  /* cmd request */
 133 #define DKIOCINFO       _IOR('d', 5, struct drive_info) /* get drive info */
 134 #define DKIOCZSTATS     _IO('d',7)                      /* zero statistics */
 135 #define DKIOCGSTATS     _IO('d', 8)                     /* get statistics */
 136 #define DKIOCRESET      _IO('d', 9)                     /* reset disk */
 137 #define DKIOCGFLAGS     _IOR('d', 11, int)              /* get driver flags */
 138 #define DKIOCSFLAGS     _IOW('d', 12, int)              /* set driver flags */
 139 #define DKIOCSDCWIRE    _IOW('d', 14, struct sdc_wire)  /* sdc wire memory */
 140 #define DKIOCSDCLOCK    _IO('d', 15)                    /* sdc lock */
 141 #define DKIOCSDCUNLOCK  _IO('d', 16)                    /* sdc unlock */
 142 #define DKIOCGFREEVOL   _IOR('d', 17, int)              /* get free volume # */
 143 #define DKIOCGBBT       _IO('d', 18)                    /* read bad blk tbl */
 144 #define DKIOCSBBT       _IO('d', 19)                    /* write bad blk tbl */
 145 #define DKIOCMNOTIFY    _IOW('d', 20, int)              /* message on insert */
 146 #define DKIOCEJECT      _IO('d', 21)                    /* eject disk */
 147 #define DKIOCPANELPRT   _IOW('d', 22, int)              /* register Panel */
 148                                                         /* Request port */
 149 #define DKIOCSFORMAT    _IOW('d', 23, int)              /* set 'Formatted' flag */
 150 #define DKIOCGFORMAT    _IOR('d', 23, int)              /* get 'Formatted' flag */
 151 #define DKIOCBLKSIZE    _IOR('d', 24, int)              /* device sector size */
 152 #define DKIOCNUMBLKS    _IOR('d', 25, int)              /* number of sectors */
 153 #define DKIOCCHECKINSERT _IO('d',26)            /* manually poll removable */
 154                                                 /* media drive */
 155 #define DKIOCCANCELAUTOMOUNT _IOW('d',27, dev_t)        /* cancel automount request */
 156 #define DKIOCGLOCATION  _IOR('d',28, struct drive_location)     /* arch dependent location descrip */
 157 #define DKIOCSETBLOCKSIZE   _IOW('d', 24, int)  /* set media's preferred sector size */
 158 #define DKIOCGETBLOCKSIZE   DKIOCBLKSIZE        /* get media's preferred sector size */
 159 #define DKIOCGETBLOCKCOUNT  DKIOCNUMBLKS        /* get media's sector count */
 160 #define DKIOCGETLOCATION    DKIOCGLOCATION      /* get media's location description */
 161 #define DKIOCISFORMATTED    DKIOCGFORMAT        /* is media formatted? */
 162 #define DKIOCISWRITABLE     _IOR('d', 29, int)  /* is media writable? */
 163
 164 #define DKIOCGETMAXBLOCKCOUNTREAD    _IOR('d', 64, u_int64_t) /* get device's maximum block count for read requests */
 165 #define DKIOCGETMAXBLOCKCOUNTWRITE   _IOR('d', 65, u_int64_t) /* get device's maximum block count for write requests */
 166 #define DKIOCGETMAXSEGMENTCOUNTREAD  _IOR('d', 66, u_int64_t) /* get device's maximum physical segment count for read buffers */
 167 #define DKIOCGETMAXSEGMENTCOUNTWRITE _IOR('d', 67, u_int64_t) /* get device's maximum physical segment count for write buffers */
 168
 169 #endif  /* _BSD_DEV_DISK_ */