bsd/sys/disk.h

   1 /*
   2  * Copyright (c) 1998-2006 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #ifndef _SYS_DISK_H_
  30 #define _SYS_DISK_H_
  31
  32 #include <stdint.h>
  33 #include <sys/ioctl.h>
  34
  35 /*
  36  * Definitions
  37  *
  38  * ioctl                                 description
  39  * ------------------------------------- ---------------------------------------
  40  * DKIOCEJECT                            eject media
  41  * DKIOCSYNCHRONIZECACHE                 flush media
  42  *
  43  * DKIOCFORMAT                           format media
  44  * DKIOCGETFORMATCAPACITIES              get media's formattable capacities
  45  *
  46  * DKIOCGETBLOCKSIZE                     get media's block size
  47  * DKIOCGETBLOCKCOUNT                    get media's block count
  48  * DKIOCGETFIRMWAREPATH                  get media's firmware path
  49  *
  50  * DKIOCISFORMATTED                      is media formatted?
  51  * DKIOCISWRITABLE                       is media writable?
  52  *
  53  * DKIOCDISCARD                          delete unused data
  54  *
  55  * DKIOCGETMAXBLOCKCOUNTREAD             get maximum block count for reads
  56  * DKIOCGETMAXBLOCKCOUNTWRITE            get maximum block count for writes
  57  * DKIOCGETMAXBYTECOUNTREAD              get maximum byte count for reads
  58  * DKIOCGETMAXBYTECOUNTWRITE             get maximum byte count for writes
  59  *
  60  * DKIOCGETMAXSEGMENTCOUNTREAD           get maximum segment count for reads
  61  * DKIOCGETMAXSEGMENTCOUNTWRITE          get maximum segment count for writes
  62  * DKIOCGETMAXSEGMENTBYTECOUNTREAD       get maximum segment byte count for reads
  63  * DKIOCGETMAXSEGMENTBYTECOUNTWRITE      get maximum segment byte count for writes
  64  *
  65  * DKIOCGETMINSEGMENTALIGNMENTBYTECOUNT  get minimum segment alignment in bytes
  66  * DKIOCGETMAXSEGMENTADDRESSABLEBITCOUNT get maximum segment width in bits
  67  *
  68  * DKIOCGETPHYSICALBLOCKSIZE             get device's block size
  69  */
  70
  71 typedef struct
  72 {
  73     uint64_t               offset;
  74     uint64_t               length;
  75
  76     uint8_t                reserved0128[16];       /* reserved, clear to zero */
  77 } dk_discard_t;
  78
  79 typedef struct
  80 {
  81     char                   path[128];
  82 } dk_firmware_path_t;
  83
  84 typedef struct
  85 {
  86     uint64_t               blockCount;
  87     uint32_t               blockSize;
  88
  89     uint8_t                reserved0096[4];        /* reserved, clear to zero */
  90 } dk_format_capacity_t;
  91
  92 typedef struct
  93 {
  94     dk_format_capacity_t * capacities;
  95     uint32_t               capacitiesCount;        /* use zero to probe count */
  96
  97 #ifdef __LP64__
  98     uint8_t                reserved0096[4];        /* reserved, clear to zero */
  99 #else /* !__LP64__ */
 100     uint8_t                reserved0064[8];        /* reserved, clear to zero */
 101 #endif /* !__LP64__ */
 102 } dk_format_capacities_t;
 103
 104 #define DKIOCEJECT                            _IO('d', 21)
 105 #define DKIOCSYNCHRONIZECACHE                 _IO('d', 22)
 106
 107 #define DKIOCFORMAT                           _IOW('d', 26, dk_format_capacity_t)
 108 #define DKIOCGETFORMATCAPACITIES              _IOWR('d', 26, dk_format_capacities_t)
 109
 110 #define DKIOCGETBLOCKSIZE                     _IOR('d', 24, uint32_t)
 111 #define DKIOCGETBLOCKCOUNT                    _IOR('d', 25, uint64_t)
 112 #define DKIOCGETFIRMWAREPATH                  _IOR('d', 28, dk_firmware_path_t)
 113
 114 #define DKIOCISFORMATTED                      _IOR('d', 23, uint32_t)
 115 #define DKIOCISWRITABLE                       _IOR('d', 29, uint32_t)
 116
 117 #define DKIOCDISCARD                          _IOW('d', 31, dk_discard_t)
 118
 119 #define DKIOCGETMAXBLOCKCOUNTREAD             _IOR('d', 64, uint64_t)
 120 #define DKIOCGETMAXBLOCKCOUNTWRITE            _IOR('d', 65, uint64_t)
 121 #define DKIOCGETMAXBYTECOUNTREAD              _IOR('d', 70, uint64_t)
 122 #define DKIOCGETMAXBYTECOUNTWRITE             _IOR('d', 71, uint64_t)
 123
 124 #define DKIOCGETMAXSEGMENTCOUNTREAD           _IOR('d', 66, uint64_t)
 125 #define DKIOCGETMAXSEGMENTCOUNTWRITE          _IOR('d', 67, uint64_t)
 126 #define DKIOCGETMAXSEGMENTBYTECOUNTREAD       _IOR('d', 68, uint64_t)
 127 #define DKIOCGETMAXSEGMENTBYTECOUNTWRITE      _IOR('d', 69, uint64_t)
 128
 129 #define DKIOCGETMINSEGMENTALIGNMENTBYTECOUNT  _IOR('d', 74, uint64_t)
 130 #define DKIOCGETMAXSEGMENTADDRESSABLEBITCOUNT _IOR('d', 75, uint64_t)
 131
 132 #define DKIOCGETPHYSICALBLOCKSIZE             _IOR('d', 77, uint32_t)
 133
 134 #ifdef KERNEL
 135 #define DK_FEATURE_DISCARD                    0x00000010
 136 #define DK_FEATURE_FORCE_UNIT_ACCESS          0x00000001
 137 #define DKIOCGETBLOCKCOUNT32                  _IOR('d', 25, uint32_t)
 138 #define DKIOCSETBLOCKSIZE                     _IOW('d', 24, uint32_t)
 139 #define DKIOCGETBSDUNIT                       _IOR('d', 27, uint32_t)
 140 #define DKIOCISVIRTUAL                        _IOR('d', 72, uint32_t)
 141 #define DKIOCGETBASE                          _IOR('d', 73, uint64_t)
 142 #define DKIOCGETFEATURES                      _IOR('d', 76, uint32_t)
 143 #endif /* KERNEL */
 144
 145 #endif  /* _SYS_DISK_H_ */