/// <summary>
/// Perform disk software reset
/// </summary>
/// <returns>Error code</returns>
DWORD PhysicalDisk::Reset()
{
DWORD err = SendATACommand( IDE_COMMAND_SLEEP );
if (err)
return err;
return SendATACommand( IDE_COMMAND_ATAPI_RESET );
}
/**
IDENTIFY_DEVICE command
@param CardData Pointer to CARD_DATA.
@retval EFI_SUCCESS Success
@retval EFI_DEVICE_ERROR Hardware Error
@retval EFI_INVALID_PARAMETER Parameter is error
@retval EFI_NO_MEDIA No media
@retval EFI_MEDIA_CHANGED Media Change
@retval EFI_BAD_BUFFER_SIZE Buffer size is bad
**/
EFI_STATUS
IndentifyDevice (
IN CARD_DATA *CardData
)
{
EFI_STATUS Status;
ZeroMem (&CardData->TaskFile, sizeof (TASK_FILE));
//
//The host only supports nIEN = 0
//
CardData->TaskFile.Command_Status = IDENTIFY_DEVICE;
Status = SendATACommand (
CardData,
&CardData->TaskFile,
FALSE,
(UINT8*)&(CardData->IndentifyDeviceData),
1
);
return Status;
}
/**
WRITE_DMA_EXT command
@param CardData Pointer to CARD_DATA.
@param LBA The starting logical block address to read from on the device.
@param Buffer A pointer to the destination buffer for the data. The caller
is responsible for either having implicit or explicit ownership
of the buffer.
@param SectorCount Size in 512 bytes unit.
@retval EFI_SUCCESS Success
@retval EFI_DEVICE_ERROR Hardware Error
@retval EFI_INVALID_PARAMETER Parameter is error
@retval EFI_NO_MEDIA No media
@retval EFI_MEDIA_CHANGED Media Change
@retval EFI_BAD_BUFFER_SIZE Buffer size is bad
**/
EFI_STATUS
WriteDMAExt (
IN CARD_DATA *CardData,
IN EFI_LBA LBA,
IN UINT8 *Buffer,
IN UINT16 SectorCount
)
{
EFI_STATUS Status;
ZeroMem (&CardData->TaskFile, sizeof (TASK_FILE));
//
//The host only supports nIEN = 0
//
CardData->TaskFile.Command_Status = WRITE_DMA_EXT;
CardData->TaskFile.SectorCount = (UINT8)SectorCount;
CardData->TaskFile.SectorCount_Exp = (UINT8)(SectorCount >> 8);
CardData->TaskFile.LBALow = (UINT8)LBA;
CardData->TaskFile.LBAMid = (UINT8)RShiftU64(LBA, 8);
CardData->TaskFile.LBAHigh = (UINT8)RShiftU64(LBA, 16);
CardData->TaskFile.LBALow_Exp = (UINT8)RShiftU64(LBA, 24);
CardData->TaskFile.LBAMid_Exp = (UINT8)RShiftU64(LBA, 32);
CardData->TaskFile.LBAHigh_Exp = (UINT8)RShiftU64(LBA, 40);
Status = SendATACommand (
CardData,
&CardData->TaskFile,
TRUE,
Buffer,
SectorCount
);
return Status;
}
/**
STANDBY_IMMEDIATE command
@param CardData Pointer to CARD_DATA.
@retval EFI_SUCCESS Success
@retval EFI_DEVICE_ERROR Hardware Error
@retval EFI_INVALID_PARAMETER Parameter is error
@retval EFI_NO_MEDIA No media
@retval EFI_MEDIA_CHANGED Media Change
@retval EFI_BAD_BUFFER_SIZE Buffer size is bad
**/
EFI_STATUS
StandByImmediate (
IN CARD_DATA *CardData
)
{
EFI_STATUS Status;
ZeroMem (&CardData->TaskFile, sizeof (TASK_FILE));
//
//The host only supports nIEN = 0
//
CardData->TaskFile.Command_Status = STANDBY_IMMEDIATE;
Status = SendATACommand (
CardData,
&CardData->TaskFile,
FALSE,
NULL,
0
);
return Status;
}
/// <summary>
/// Put device into sleep power state
/// </summary>
/// <returns>Error code</returns>
DWORD PhysicalDisk::Sleep()
{
return SendATACommand( IDE_COMMAND_SLEEP );
}
