reactos/ntoskrnl/include/internal/hal.h

   1 /*
   2  * PROJECT:         ReactOS Kernel
   3  * LICENSE:         GPL - See COPYING in the top level directory
   4  * FILE:            ntoskrnl/include/hal.h
   5  * PURPOSE:         Internal header for the I/O HAL Functions (Fstub)
   6  * PROGRAMMERS:     Alex Ionescu (alex.ionescu@reactos.org)
   7  */
   8
   9 #pragma once
  10
  11 //
  12 // Default implementations of HAL dispatch table
  13 //
  14 VOID
  15 FASTCALL
  16 xHalExamineMBR(IN PDEVICE_OBJECT DeviceObject,
  17                IN ULONG SectorSize,
  18                IN ULONG MbrTypeIdentifier,
  19                OUT PVOID *MbrBuffer);
  20
  21 VOID
  22 FASTCALL
  23 xHalIoAssignDriveLetters(IN PLOADER_PARAMETER_BLOCK LoaderBlock,
  24                          IN PSTRING NtDeviceName,
  25                          OUT PUCHAR NtSystemPath,
  26                          OUT PSTRING NtSystemPathString);
  27
  28 NTSTATUS
  29 FASTCALL
  30 xHalIoReadPartitionTable(IN PDEVICE_OBJECT DeviceObject,
  31                          IN ULONG SectorSize,
  32                          IN BOOLEAN ReturnRecognizedPartitions,
  33                          IN OUT PDRIVE_LAYOUT_INFORMATION *PartitionBuffer);
  34
  35 NTSTATUS
  36 FASTCALL
  37 xHalIoSetPartitionInformation(IN PDEVICE_OBJECT DeviceObject,
  38                               IN ULONG SectorSize,
  39                               IN ULONG PartitionNumber,
  40                               IN ULONG PartitionType);
  41
  42 NTSTATUS
  43 FASTCALL
  44 xHalIoWritePartitionTable(IN PDEVICE_OBJECT DeviceObject,
  45                           IN ULONG SectorSize,
  46                           IN ULONG SectorsPerTrack,
  47                           IN ULONG NumberOfHeads,
  48                           IN PDRIVE_LAYOUT_INFORMATION PartitionBuffer);
  49
  50 VOID
  51 NTAPI
  52 xHalHaltSystem(
  53     VOID
  54 );
  55
  56 VOID
  57 NTAPI
  58 xHalEndOfBoot(
  59     VOID
  60 );
  61
  62 VOID
  63 NTAPI
  64 xHalSetWakeEnable(
  65     IN BOOLEAN Enable
  66 );
  67
  68 UCHAR
  69 NTAPI
  70 xHalVectorToIDTEntry(
  71     IN ULONG Vector
  72 );
  73
  74
  75 //
  76 // Various offsets in the boot record
  77 //
  78 #define PARTITION_TABLE_OFFSET                      (0x1BE / 2)
  79 #define BOOT_SIGNATURE_OFFSET                       ((0x200 / 2) - 1)
  80 #define BOOT_RECORD_RESERVED                        0x1BC
  81 #define BOOT_RECORD_SIGNATURE                       0xAA55
  82 #define NUM_PARTITION_TABLE_ENTRIES                 4
  83
  84 //
  85 // Helper Macros
  86 //
  87 #define GET_STARTING_SECTOR(p)                      \
  88     ((ULONG)(p->StartingSectorLsb0) +               \
  89      (ULONG)(p->StartingSectorLsb1 << 8 ) +         \
  90      (ULONG)(p->StartingSectorMsb0 << 16) +         \
  91      (ULONG)(p->StartingSectorMsb1 << 24))
  92
  93 #define GET_ENDING_S_OF_CHS(p)                      \
  94     ((UCHAR)(p->EndingCylinderLsb & 0x3F))
  95
  96 #define GET_PARTITION_LENGTH(p)                     \
  97     ((ULONG)(p->PartitionLengthLsb0) +              \
  98      (ULONG)(p->PartitionLengthLsb1 << 8) +         \
  99      (ULONG)(p->PartitionLengthMsb0 << 16) +        \
 100      (ULONG)(p->PartitionLengthMsb1 << 24))
 101
 102 //
 103 // Structure describing a partition
 104 //
 105 typedef struct _PARTITION_DESCRIPTOR
 106 {
 107     UCHAR ActiveFlag;
 108     UCHAR StartingTrack;
 109     UCHAR StartingCylinderLsb;
 110     UCHAR StartingCylinderMsb;
 111     UCHAR PartitionType;
 112     UCHAR EndingTrack;
 113     UCHAR EndingCylinderLsb;
 114     UCHAR EndingCylinderMsb;
 115     UCHAR StartingSectorLsb0;
 116     UCHAR StartingSectorLsb1;
 117     UCHAR StartingSectorMsb0;
 118     UCHAR StartingSectorMsb1;
 119     UCHAR PartitionLengthLsb0;
 120     UCHAR PartitionLengthLsb1;
 121     UCHAR PartitionLengthMsb0;
 122     UCHAR PartitionLengthMsb1;
 123 } PARTITION_DESCRIPTOR, *PPARTITION_DESCRIPTOR;
 124
 125 //
 126 // Structure describing a boot sector
 127 //
 128 typedef struct _BOOT_SECTOR_INFO
 129 {
 130     UCHAR JumpByte[1];
 131     UCHAR Ignore1[2];
 132     UCHAR OemData[8];
 133     UCHAR BytesPerSector[2];
 134     UCHAR Ignore2[6];
 135     UCHAR NumberOfSectors[2];
 136     UCHAR MediaByte[1];
 137     UCHAR Ignore3[2];
 138     UCHAR SectorsPerTrack[2];
 139     UCHAR NumberOfHeads[2];
 140 } BOOT_SECTOR_INFO, *PBOOT_SECTOR_INFO;
 141
 142 //
 143 // Partition Table and Disk Layout
 144 //
 145 typedef struct _PARTITION_TABLE
 146 {
 147     PARTITION_INFORMATION PartitionEntry[4];
 148 } PARTITION_TABLE, *PPARTITION_TABLE;
 149
 150 typedef struct _DISK_LAYOUT
 151 {
 152     ULONG TableCount;
 153     ULONG Signature;
 154     PARTITION_TABLE PartitionTable[1];
 155 } DISK_LAYOUT, *PDISK_LAYOUT;
 156
 157 //
 158 // Partition Table Entry
 159 //
 160 typedef struct _PTE
 161 {
 162     UCHAR ActiveFlag;
 163     UCHAR StartingTrack;
 164     USHORT StartingCylinder;
 165     UCHAR PartitionType;
 166     UCHAR EndingTrack;
 167     USHORT EndingCylinder;
 168     ULONG StartingSector;
 169     ULONG PartitionLength;
 170 } PTE, *PPTE;