bsd/sys/disk.h

   1 /*
   2  * Copyright (c) 1998-2005 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
  23 #ifndef _SYS_DISK_H_
  24 #define _SYS_DISK_H_
  25
  26 #include <sys/ioctl.h>
  27 #include <sys/types.h>
  28 #include <sys/cdefs.h>
  29
  30 /*
  31  * Definitions
  32  *
  33  * ioctl                                 description
  34  * ------------------------------------- ---------------------------------------
  35  * DKIOCEJECT                            eject media
  36  * DKIOCSYNCHRONIZECACHE                 flush media
  37  *
  38  * DKIOCFORMAT                           format media
  39  * DKIOCGETFORMATCAPACITIES              get media's formattable capacities
  40  *
  41  * DKIOCGETBLOCKSIZE                     get media's block size
  42  * DKIOCGETBLOCKCOUNT                    get media's block count
  43  * DKIOCGETFIRMWAREPATH                  get media's firmware path
  44  *
  45  * DKIOCISFORMATTED                      is media formatted?
  46  * DKIOCISWRITABLE                       is media writable?
  47  *
  48  * DKIOCGETMAXBLOCKCOUNTREAD             get maximum block count for reads
  49  * DKIOCGETMAXBLOCKCOUNTWRITE            get maximum block count for writes
  50  * DKIOCGETMAXBYTECOUNTREAD              get maximum byte count for reads
  51  * DKIOCGETMAXBYTECOUNTWRITE             get maximum byte count for writes
  52  *
  53  * DKIOCGETMAXSEGMENTCOUNTREAD           get maximum segment count for reads
  54  * DKIOCGETMAXSEGMENTCOUNTWRITE          get maximum segment count for writes
  55  * DKIOCGETMAXSEGMENTBYTECOUNTREAD       get maximum segment byte count for reads
  56  * DKIOCGETMAXSEGMENTBYTECOUNTWRITE      get maximum segment byte count for writes
  57  *
  58  * DKIOCGETMINSEGMENTALIGNMENTBYTECOUNT  get minimum segment alignment in bytes
  59  * DKIOCGETMAXSEGMENTADDRESSABLEBITCOUNT get maximum segment width in bits
  60  */
  61
  62 #pragma pack(4)
  63
  64 typedef struct
  65 {
  66     char path[128];
  67 } dk_firmware_path_t;
  68
  69 typedef struct
  70 {
  71     u_int64_t              blockCount;
  72     u_int32_t              blockSize;
  73
  74     u_int8_t               reserved0096[4];        /* reserved, clear to zero */
  75 } dk_format_capacity_t;
  76
  77 /* LP64todo: not 64-bit clean */
  78 typedef struct
  79 {
  80     dk_format_capacity_t * capacities;
  81     u_int32_t              capacitiesCount;        /* use zero to probe count */
  82
  83     u_int8_t               reserved0064[8];        /* reserved, clear to zero */
  84 } dk_format_capacities_t;
  85
  86 #pragma pack()
  87
  88 #define DKIOCEJECT                            _IO('d', 21)
  89 #define DKIOCSYNCHRONIZECACHE                 _IO('d', 22)
  90
  91 #define DKIOCFORMAT                           _IOW('d', 26, dk_format_capacity_t)
  92 #define DKIOCGETFORMATCAPACITIES              _IOWR('d', 26, dk_format_capacities_t)
  93
  94 #define DKIOCGETBLOCKSIZE                     _IOR('d', 24, u_int32_t)
  95 #define DKIOCGETBLOCKCOUNT                    _IOR('d', 25, u_int64_t)
  96 #define DKIOCGETFIRMWAREPATH                  _IOR('d', 28, dk_firmware_path_t)
  97
  98 #define DKIOCISFORMATTED                      _IOR('d', 23, u_int32_t)
  99 #define DKIOCISWRITABLE                       _IOR('d', 29, u_int32_t)
 100
 101 #define DKIOCGETMAXBLOCKCOUNTREAD             _IOR('d', 64, u_int64_t)
 102 #define DKIOCGETMAXBLOCKCOUNTWRITE            _IOR('d', 65, u_int64_t)
 103 #define DKIOCGETMAXBYTECOUNTREAD              _IOR('d', 70, u_int64_t)
 104 #define DKIOCGETMAXBYTECOUNTWRITE             _IOR('d', 71, u_int64_t)
 105
 106 #define DKIOCGETMAXSEGMENTCOUNTREAD           _IOR('d', 66, u_int64_t)
 107 #define DKIOCGETMAXSEGMENTCOUNTWRITE          _IOR('d', 67, u_int64_t)
 108 #define DKIOCGETMAXSEGMENTBYTECOUNTREAD       _IOR('d', 68, u_int64_t)
 109 #define DKIOCGETMAXSEGMENTBYTECOUNTWRITE      _IOR('d', 69, u_int64_t)
 110
 111 #define DKIOCGETMINSEGMENTALIGNMENTBYTECOUNT  _IOR('d', 74, u_int64_t)
 112 #define DKIOCGETMAXSEGMENTADDRESSABLEBITCOUNT _IOR('d', 75, u_int64_t)
 113
 114 #ifdef KERNEL
 115 #define DKIOCGETBLOCKCOUNT32                  _IOR('d', 25, u_int32_t)
 116 #define DKIOCSETBLOCKSIZE                     _IOW('d', 24, u_int32_t)
 117 #define DKIOCGETBSDUNIT                       _IOR('d', 27, u_int32_t)
 118 #define DKIOCISVIRTUAL                        _IOR('d', 72, u_int32_t)
 119 #define DKIOCGETBASE                          _IOR('d', 73, u_int64_t)
 120 #endif /* KERNEL */
 121
 122 #endif  /* _SYS_DISK_H_ */