ata.h

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#ifndef _NTATA_
#define _NTATA_

#include <pshpack1.h>
typedef struct _IDENTIFY_DEVICE_DATA {
  struct {
    USHORT Reserved1  :1;
    USHORT Retired3  :1;
    USHORT ResponseIncomplete  :1;
    USHORT Retired2  :3;
    USHORT FixedDevice  :1;
    USHORT RemovableMedia  :1;
    USHORT Retired1  :7;
    USHORT DeviceType  :1;
  } GeneralConfiguration;
  USHORT NumCylinders;
  USHORT ReservedWord2;
  USHORT NumHeads;
  USHORT Retired1[2];
  USHORT NumSectorsPerTrack;
  USHORT VendorUnique1[3];
  UCHAR  SerialNumber[20];
  USHORT Retired2[2];
  USHORT Obsolete1;
  UCHAR  FirmwareRevision[8];
  UCHAR  ModelNumber[40];
  UCHAR  MaximumBlockTransfer;
  UCHAR  VendorUnique2;
  USHORT ReservedWord48;
  struct {
    UCHAR  ReservedByte49;
    UCHAR  DmaSupported  :1;
    UCHAR  LbaSupported  :1;
    UCHAR  IordyDisable  :1;
    UCHAR  IordySupported  :1;
    UCHAR  Reserved1  :1;
    UCHAR  StandybyTimerSupport  :1;
    UCHAR  Reserved2  :2;
    USHORT ReservedWord50;
  } Capabilities;
  USHORT ObsoleteWords51[2];
  USHORT TranslationFieldsValid  :3;
  USHORT Reserved3  :13;
  USHORT NumberOfCurrentCylinders;
  USHORT NumberOfCurrentHeads;
  USHORT CurrentSectorsPerTrack;
  ULONG  CurrentSectorCapacity;
  UCHAR  CurrentMultiSectorSetting;
  UCHAR  MultiSectorSettingValid  :1;
  UCHAR  ReservedByte59  :7;
  ULONG  UserAddressableSectors;
  USHORT ObsoleteWord62;
  USHORT MultiWordDMASupport  :8;
  USHORT MultiWordDMAActive  :8;
  USHORT AdvancedPIOModes  :8;
  USHORT ReservedByte64  :8;
  USHORT MinimumMWXferCycleTime;
  USHORT RecommendedMWXferCycleTime;
  USHORT MinimumPIOCycleTime;
  USHORT MinimumPIOCycleTimeIORDY;
  USHORT ReservedWords69[6];
  USHORT QueueDepth  :5;
  USHORT ReservedWord75  :11;
  USHORT ReservedWords76[4];
  USHORT MajorRevision;
  USHORT MinorRevision;
  struct {
    USHORT SmartCommands  :1;
    USHORT SecurityMode  :1;
    USHORT RemovableMediaFeature  :1;
    USHORT PowerManagement  :1;
    USHORT Reserved1  :1;
    USHORT WriteCache  :1;
    USHORT LookAhead  :1;
    USHORT ReleaseInterrupt  :1;
    USHORT ServiceInterrupt  :1;
    USHORT DeviceReset  :1;
    USHORT HostProtectedArea  :1;
    USHORT Obsolete1  :1;
    USHORT WriteBuffer  :1;
    USHORT ReadBuffer  :1;
    USHORT Nop  :1;
    USHORT Obsolete2  :1;
    USHORT DownloadMicrocode  :1;
    USHORT DmaQueued  :1;
    USHORT Cfa  :1;
    USHORT AdvancedPm  :1;
    USHORT Msn  :1;
    USHORT PowerUpInStandby  :1;
    USHORT ManualPowerUp  :1;
    USHORT Reserved2  :1;
    USHORT SetMax  :1;
    USHORT Acoustics  :1;
    USHORT BigLba  :1;
    USHORT DeviceConfigOverlay  :1;
    USHORT FlushCache  :1;
    USHORT FlushCacheExt  :1;
    USHORT Resrved3  :2;
    USHORT SmartErrorLog  :1;
    USHORT SmartSelfTest  :1;
    USHORT MediaSerialNumber  :1;
    USHORT MediaCardPassThrough  :1;
    USHORT StreamingFeature  :1;
    USHORT GpLogging  :1;
    USHORT WriteFua  :1;
    USHORT WriteQueuedFua  :1;
    USHORT WWN64Bit  :1;
    USHORT URGReadStream  :1;
    USHORT URGWriteStream  :1;
    USHORT ReservedForTechReport  :2;
    USHORT IdleWithUnloadFeature  :1;
    USHORT Reserved4  :2;
  } CommandSetSupport;
  struct {
    USHORT SmartCommands  :1;
    USHORT SecurityMode  :1;
    USHORT RemovableMediaFeature  :1;
    USHORT PowerManagement  :1;
    USHORT Reserved1  :1;
    USHORT WriteCache  :1;
    USHORT LookAhead  :1;
    USHORT ReleaseInterrupt  :1;
    USHORT ServiceInterrupt  :1;
    USHORT DeviceReset  :1;
    USHORT HostProtectedArea  :1;
    USHORT Obsolete1  :1;
    USHORT WriteBuffer  :1;
    USHORT ReadBuffer  :1;
    USHORT Nop  :1;
    USHORT Obsolete2  :1;
    USHORT DownloadMicrocode  :1;
    USHORT DmaQueued  :1;
    USHORT Cfa  :1;
    USHORT AdvancedPm  :1;
    USHORT Msn  :1;
    USHORT PowerUpInStandby  :1;
    USHORT ManualPowerUp  :1;
    USHORT Reserved2  :1;
    USHORT SetMax  :1;
    USHORT Acoustics  :1;
    USHORT BigLba  :1;
    USHORT DeviceConfigOverlay  :1;
    USHORT FlushCache  :1;
    USHORT FlushCacheExt  :1;
    USHORT Resrved3  :2;
    USHORT SmartErrorLog  :1;
    USHORT SmartSelfTest  :1;
    USHORT MediaSerialNumber  :1;
    USHORT MediaCardPassThrough  :1;
    USHORT StreamingFeature  :1;
    USHORT GpLogging  :1;
    USHORT WriteFua  :1;
    USHORT WriteQueuedFua  :1;
    USHORT WWN64Bit  :1;
    USHORT URGReadStream  :1;
    USHORT URGWriteStream  :1;
    USHORT ReservedForTechReport  :2;
    USHORT IdleWithUnloadFeature  :1;
    USHORT Reserved4  :2;
  } CommandSetActive;
  USHORT UltraDMASupport  :8;
  USHORT UltraDMAActive  :8;
  USHORT ReservedWord89[4];
  USHORT HardwareResetResult;
  USHORT CurrentAcousticValue  :8;
  USHORT RecommendedAcousticValue  :8;
  USHORT ReservedWord95[5];
  ULONG  Max48BitLBA[2];
  USHORT StreamingTransferTime;
  USHORT ReservedWord105;
  struct {
    USHORT LogicalSectorsPerPhysicalSector  :4;
    USHORT Reserved0  :8;
    USHORT LogicalSectorLongerThan256Words  :1;
    USHORT MultipleLogicalSectorsPerPhysicalSector  :1;
    USHORT Reserved1  :2;
  } PhysicalLogicalSectorSize;
  USHORT InterSeekDelay;
  USHORT WorldWideName[4];
  USHORT ReservedForWorldWideName128[4];
  USHORT ReservedForTlcTechnicalReport;
  USHORT WordsPerLogicalSector[2];
  struct {
    USHORT ReservedForDrqTechnicalReport  :1;
    USHORT WriteReadVerifySupported  :1;
    USHORT Reserved01  :11;
    USHORT Reserved1  :2;
  } CommandSetSupportExt;
  struct {
    USHORT ReservedForDrqTechnicalReport  :1;
    USHORT WriteReadVerifyEnabled  :1;
    USHORT Reserved01  :11;
    USHORT Reserved1  :2;
  } CommandSetActiveExt;
  USHORT ReservedForExpandedSupportandActive[6];
  USHORT MsnSupport  :2;
  USHORT ReservedWord1274  :14;
  struct {
    USHORT SecuritySupported  :1;
    USHORT SecurityEnabled  :1;
    USHORT SecurityLocked  :1;
    USHORT SecurityFrozen  :1;
    USHORT SecurityCountExpired  :1;
    USHORT EnhancedSecurityEraseSupported  :1;
    USHORT Reserved0  :2;
    USHORT SecurityLevel  :1;
    USHORT Reserved1  :7;
  } SecurityStatus;
  USHORT ReservedWord129[31];
  struct {
    USHORT MaximumCurrentInMA2  :12;
    USHORT CfaPowerMode1Disabled  :1;
    USHORT CfaPowerMode1Required  :1;
    USHORT Reserved0  :1;
    USHORT Word160Supported  :1;
  } CfaPowerModel;
  USHORT ReservedForCfaWord161[8];
  struct {
    USHORT SupportsTrim  :1;
    USHORT Reserved0  :15;
  } DataSetManagementFeature;
  USHORT ReservedForCfaWord170[6];
  USHORT CurrentMediaSerialNumber[30];
  USHORT ReservedWord206;
  USHORT ReservedWord207[2];
  struct {
    USHORT AlignmentOfLogicalWithinPhysical  :14;
    USHORT Word209Supported  :1;
    USHORT Reserved0  :1;
  } BlockAlignment;
  USHORT WriteReadVerifySectorCountMode3Only[2];
  USHORT WriteReadVerifySectorCountMode2Only[2];
  struct {
    USHORT NVCachePowerModeEnabled  :1;
    USHORT Reserved0  :3;
    USHORT NVCacheFeatureSetEnabled  :1;
    USHORT Reserved1  :3;
    USHORT NVCachePowerModeVersion  :4;
    USHORT NVCacheFeatureSetVersion  :4;
  } NVCacheCapabilities;
  USHORT NVCacheSizeLSW;
  USHORT NVCacheSizeMSW;
  USHORT NominalMediaRotationRate;
  USHORT ReservedWord218;
  struct {
    UCHAR NVCacheEstimatedTimeToSpinUpInSeconds;
    UCHAR Reserved;
  } NVCacheOptions;
  USHORT ReservedWord220[35];
  USHORT Signature  :8;
  USHORT CheckSum  :8;
} IDENTIFY_DEVICE_DATA, *PIDENTIFY_DEVICE_DATA;
#include <poppack.h>

#define IDE_LBA_MODE                          (1 << 6)

#define IDE_COMMAND_NOP                       0x00
#define IDE_COMMAND_DATA_SET_MANAGEMENT       0x06
#define IDE_COMMAND_ATAPI_RESET               0x08
#define IDE_COMMAND_READ                      0x20
#define IDE_COMMAND_READ_EXT                  0x24
#define IDE_COMMAND_READ_DMA_EXT              0x25
#define IDE_COMMAND_READ_DMA_QUEUED_EXT       0x26
#define IDE_COMMAND_READ_MULTIPLE_EXT         0x29
#define IDE_COMMAND_WRITE                     0x30
#define IDE_COMMAND_WRITE_EXT                 0x34
#define IDE_COMMAND_WRITE_DMA_EXT             0x35
#define IDE_COMMAND_WRITE_DMA_QUEUED_EXT      0x36
#define IDE_COMMAND_WRITE_MULTIPLE_EXT        0x39
#define IDE_COMMAND_WRITE_DMA_FUA_EXT         0x3D
#define IDE_COMMAND_WRITE_DMA_QUEUED_FUA_EXT  0x3E
#define IDE_COMMAND_VERIFY                    0x40
#define IDE_COMMAND_VERIFY_EXT                0x42
#define IDE_COMMAND_EXECUTE_DEVICE_DIAGNOSTIC 0x90
#define IDE_COMMAND_SET_DRIVE_PARAMETERS      0x91
#define IDE_COMMAND_ATAPI_PACKET              0xA0
#define IDE_COMMAND_ATAPI_IDENTIFY            0xA1
#define IDE_COMMAND_SMART                     0xB0
#define IDE_COMMAND_READ_MULTIPLE             0xC4
#define IDE_COMMAND_WRITE_MULTIPLE            0xC5
#define IDE_COMMAND_SET_MULTIPLE              0xC6
#define IDE_COMMAND_READ_DMA                  0xC8
#define IDE_COMMAND_WRITE_DMA                 0xCA
#define IDE_COMMAND_WRITE_DMA_QUEUED          0xCC
#define IDE_COMMAND_WRITE_MULTIPLE_FUA_EXT    0xCE
#define IDE_COMMAND_GET_MEDIA_STATUS          0xDA
#define IDE_COMMAND_DOOR_LOCK                 0xDE
#define IDE_COMMAND_DOOR_UNLOCK               0xDF
#define IDE_COMMAND_STANDBY_IMMEDIATE         0xE0
#define IDE_COMMAND_IDLE_IMMEDIATE            0xE1
#define IDE_COMMAND_CHECK_POWER               0xE5
#define IDE_COMMAND_SLEEP                     0xE6
#define IDE_COMMAND_FLUSH_CACHE               0xE7
#define IDE_COMMAND_FLUSH_CACHE_EXT           0xEA
#define IDE_COMMAND_IDENTIFY                  0xEC
#define IDE_COMMAND_MEDIA_EJECT               0xED
#define IDE_COMMAND_SET_FEATURE               0xEF
#define IDE_COMMAND_SECURITY_FREEZE_LOCK      0xF5
#define IDE_COMMAND_NOT_VALID                 0xFF

#endif