[mirror_edk2.git] / MdePkg / Library / UefiScsiLib / UefiScsiLib.c

/** @file\r
  UEFI SCSI Library implementation\r
\r
  Copyright (c) 2006 - 2007, Intel Corporation.<BR>\r
  All rights reserved. This program and the accompanying materials                          \r
  are licensed and made available under the terms and conditions of the BSD License         \r
  which accompanies this distribution.  The full text of the license may be found at        \r
  http://opensource.org/licenses/bsd-license.php                                            \r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             \r
\r
**/\r
\r
\r
#include <PiDxe.h>\r
#include <Library/ScsiLib.h>\r
#include <Library/BaseMemoryLib.h>\r
\r
#include <IndustryStandard/Scsi.h>\r
\r
\r
/**\r
  Function test the ready status of the SCSI unit.\r
\r
  @param[in]     ScsiIo             A pointer to SCSI IO protocol.\r
  @param[in]     Timeout            The length of timeout period.\r
  @param[in out] SenseData          A pointer to the sense data that \r
                                    was generated by the execution of the SCSI Request Packet.\r
  @param[in out] SenseDataLength    On input, the length in bytes of the SenseData buffer. On\r
                                    output, the number of bytes written to the SenseData buffer.\r
  @param[out]    HostAdapterStatus  The status of Host Adapter.\r
  @param[out]    TargetStatus       The status of the target.\r
\r
  @retval EFI_SUCCESS           The status of the unit is tested successfully.\r
  @retval EFI_BAD_BUFFER_SIZE   The SCSI Request Packet was executed, \r
                                but the entire DataBuffer could not be transferred.\r
                                The actual number of bytes transferred is returned\r
                                in InTransferLength.\r
  @retval EFI_NOT_READY         The SCSI Request Packet could not be sent because \r
                                there are too many SCSI Command Packets already \r
                                queued.\r
  @retval EFI_DEVICE_ERROR      A device error occurred while attempting to send \r
                                the SCSI Request Packet.\r
  @retval EFI_INVALID_PARAMETER The contents of CommandPacket are invalid, or ScsiIo is NULL.  \r
  @retval EFI_UNSUPPORTED       The command described by the SCSI Request Packet\r
                                is not supported by the SCSI initiator(i.e., SCSI \r
                                Host Controller).\r
  @retval EFI_TIMEOUT           A timeout occurred while waiting for the SCSI \r
                                Request Packet to execute.\r
\r
**/\r
EFI_STATUS\r
ScsiTestUnitReadyCommand (\r
  IN  EFI_SCSI_IO_PROTOCOL  *ScsiIo,\r
  IN  UINT64                Timeout,\r
  IN OUT VOID               *SenseData,\r
  IN OUT UINT8              *SenseDataLength,\r
  OUT UINT8                 *HostAdapterStatus,\r
  OUT UINT8                 *TargetStatus\r
  )\r
{\r
  EFI_SCSI_IO_SCSI_REQUEST_PACKET CommandPacket;\r
  UINT64                          Lun;\r
  UINT8                           *Target;\r
  UINT8                           TargetArray[EFI_SCSI_TARGET_MAX_BYTES];\r
  EFI_STATUS                      Status;\r
  UINT8                           Cdb[6];\r
\r
  ASSERT (SenseDataLength != NULL);\r
  ASSERT (HostAdapterStatus != NULL);\r
  ASSERT (TargetStatus != NULL);\r
  \r
  if (ScsiIo == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  ZeroMem (&CommandPacket, sizeof (EFI_SCSI_IO_SCSI_REQUEST_PACKET));\r
  ZeroMem (Cdb, 6);\r
\r
  CommandPacket.Timeout         = Timeout;\r
  CommandPacket.InDataBuffer    = NULL;\r
  CommandPacket.InTransferLength= 0;\r
  CommandPacket.OutDataBuffer    = NULL;\r
  CommandPacket.OutTransferLength= 0;\r
  CommandPacket.SenseData       = SenseData;\r
  CommandPacket.Cdb             = Cdb;\r
  //\r
  // Fill Cdb for Test Unit Ready Command\r
  //\r
  Target = &TargetArray[0];\r
  ScsiIo->GetDeviceLocation (ScsiIo, &Target, &Lun);\r
\r
  Cdb[0]                        = EFI_SCSI_OP_TEST_UNIT_READY;\r
  Cdb[1]                        = (UINT8) (Lun & 0xe0);\r
  CommandPacket.CdbLength       = (UINT8) 6;\r
  CommandPacket.SenseDataLength = *SenseDataLength;\r
\r
  Status                        = ScsiIo->ExecuteScsiCommand (ScsiIo, &CommandPacket, NULL);\r
\r
  *HostAdapterStatus            = CommandPacket.HostAdapterStatus;\r
  *TargetStatus                 = CommandPacket.TargetStatus;\r
  *SenseDataLength              = CommandPacket.SenseDataLength;\r
\r
  return Status;\r
}\r
\r
\r
/**\r
  Function to submit SCSI inquiry command.\r
\r
  @param[in]     ScsiIo             SCSI IO Protocol to use\r
  @param[in]     Timeout            The length of timeout period.\r
  @param[out]    SenseData          A pointer to output sense data.\r
  @param[in out] SenseDataLength    On input, the length in bytes of the SenseData buffer. On\r
                                    output, the number of bytes written to the SenseData buffer.\r
  @param[out]    HostAdapterStatus  The status of Host Adapter.\r
  @param[out]    TargetStatus       The status of the target.\r
  @param[in]     InquirydataBuffer  A pointer to inquiry data buffer.\r
  @param[in,out] InquiryDataLength  The length of inquiry data buffer.\r
  @param[in]     EnableVitalProductData  Boolean to enable Vital Product Data.\r
\r
  @retval EFI_SUCCESS         The status of the unit is tested successfully.\r
  @retval EFI_BAD_BUFFER_SIZE The SCSI Request Packet was executed, \r
                              but the entire DataBuffer could not be transferred.\r
                              The actual number of bytes transferred is returned\r
                              in TransferLength.\r
  @retval EFI_NOT_READY   The SCSI Request Packet could not be sent because \r
                          there are too many SCSI Command Packets already \r
                          queued.\r
  @retval EFI_DEVICE_ERROR  A device error occurred while attempting to send \r
                            the SCSI Request Packet.\r
  @retval EFI_INVALID_PARAMETER The contents of CommandPacket are invalid, or ScsiIo is NULL.\r
  @retval EFI_UNSUPPORTED The command described by the SCSI Request Packet\r
                          is not supported by the SCSI initiator(i.e., SCSI \r
                          Host Controller).\r
  @retval EFI_TIMEOUT     A timeout occurred while waiting for the SCSI \r
                          Request Packet to execute.\r
\r
**/\r
EFI_STATUS\r
ScsiInquiryCommand (\r
  IN  EFI_SCSI_IO_PROTOCOL  *ScsiIo,\r
  IN  UINT64                Timeout,\r
  IN  VOID                  *SenseData,\r
  IN OUT UINT8              *SenseDataLength,\r
  OUT UINT8                 *HostAdapterStatus,\r
  OUT UINT8                 *TargetStatus,\r
  IN VOID                   *InquiryDataBuffer,\r
  IN OUT UINT32             *InquiryDataLength,\r
  IN  BOOLEAN               EnableVitalProductData\r
  )\r
{\r
  EFI_SCSI_IO_SCSI_REQUEST_PACKET CommandPacket;\r
  UINT64                          Lun;\r
  UINT8                           *Target;\r
  UINT8                           TargetArray[EFI_SCSI_TARGET_MAX_BYTES];\r
  EFI_STATUS                      Status;\r
  UINT8                           Cdb[6];\r
\r
  ASSERT (SenseDataLength != NULL);\r
  ASSERT (HostAdapterStatus != NULL);\r
  ASSERT (TargetStatus != NULL);\r
  ASSERT (InquiryDataLength != NULL);\r
  \r
  if (ScsiIo == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  ZeroMem (&CommandPacket, sizeof (EFI_SCSI_IO_SCSI_REQUEST_PACKET));\r
  ZeroMem (Cdb, 6);\r
\r
  CommandPacket.Timeout         = Timeout;\r
  CommandPacket.InDataBuffer    = InquiryDataBuffer;\r
  CommandPacket.InTransferLength= *InquiryDataLength;\r
  CommandPacket.SenseData       = SenseData;\r
  CommandPacket.SenseDataLength = *SenseDataLength;\r
  CommandPacket.Cdb             = Cdb;\r
\r
  Target = &TargetArray[0];\r
  ScsiIo->GetDeviceLocation (ScsiIo, &Target, &Lun);\r
\r
  Cdb[0]  = EFI_SCSI_OP_INQUIRY;\r
  Cdb[1]  = (UINT8) (Lun & 0xe0);\r
  if (EnableVitalProductData) {\r
    Cdb[1] |= 0x01;\r
  }\r
\r
  if (*InquiryDataLength > 0xff) {\r
    *InquiryDataLength = 0xff;\r
  }\r
\r
  Cdb[4]                      = (UINT8) (*InquiryDataLength);\r
  CommandPacket.CdbLength     = (UINT8) 6;\r
  CommandPacket.DataDirection = EFI_SCSI_DATA_IN;\r
\r
  Status                      = ScsiIo->ExecuteScsiCommand (ScsiIo, &CommandPacket, NULL);\r
\r
  *HostAdapterStatus          = CommandPacket.HostAdapterStatus;\r
  *TargetStatus               = CommandPacket.TargetStatus;\r
  *SenseDataLength            = CommandPacket.SenseDataLength;\r
  *InquiryDataLength          = CommandPacket.InTransferLength;\r
\r
  return Status;\r
}\r
\r
\r
/**\r
  Function to submit SCSI mode sense 10 command.\r
\r
  @param[in]     ScsiIo             A pointer to SCSI IO protocol.\r
  @param[in]     Timeout            The length of timeout period.\r
  @param[out]    SenseData          A pointer to output sense data.\r
  @param[in out] SenseDataLength    On input, the length in bytes of the SenseData buffer. On\r
                                    output, the number of bytes written to the SenseData buffer.\r
  @param[out]    HostAdapterStatus  The status of Host Adapter.\r
  @param[out]    TargetStatus       The status of the target.\r
  @param[in]     DataBuffer         A pointer to input data buffer.\r
  @param[in,out] DataLength         The length of input data buffer.\r
  @param[in]     DBDField           The DBD Field (Optional).\r
  @param[in]     PageControl        Page Control.\r
  @param[in]     PageCode           Page code.\r
\r
  @retval EFI_SUCCESS               The status of the unit is tested successfully.\r
  @retval EFI_BAD_BUFFER_SIZE       The SCSI Request Packet was executed, \r
                                    but the entire DataBuffer could not be transferred.\r
                                    The actual number of bytes transferred is returned\r
                                    in TransferLength.\r
  @retval EFI_NOT_READY             The SCSI Request Packet could not be sent because \r
                                    there are too many SCSI Command Packets already \r
                                    queued.\r
  @retval EFI_DEVICE_ERROR          A device error occurred while attempting to send \r
                                    the SCSI Request Packet.\r
  @retval EFI_INVALID_PARAMETER     The contents of CommandPacket are invalid, or ScsiIo is NULL.  \r
  @retval EFI_UNSUPPORTED           The command described by the SCSI Request Packet\r
                                    is not supported by the SCSI initiator(i.e., SCSI \r
                                    Host Controller).\r
  @retval EFI_TIMEOUT               A timeout occurred while waiting for the SCSI \r
                                    Request Packet to execute.\r
\r
**/\r
EFI_STATUS\r
ScsiModeSense10Command (\r
  IN  EFI_SCSI_IO_PROTOCOL    *ScsiIo,\r
  IN  UINT64                  Timeout,\r
  IN  VOID                    *SenseData,\r
  IN OUT UINT8                *SenseDataLength,\r
  OUT UINT8                   *HostAdapterStatus,\r
  OUT UINT8                   *TargetStatus,\r
  IN  VOID                    *DataBuffer,\r
  IN OUT UINT32               *DataLength,\r
  IN  UINT8                   DBDField, OPTIONAL\r
  IN  UINT8                   PageControl,\r
  IN  UINT8                   PageCode\r
  )\r
{\r
  EFI_SCSI_IO_SCSI_REQUEST_PACKET CommandPacket;\r
  UINT64                          Lun;\r
  UINT8                           *Target;\r
  UINT8                           TargetArray[EFI_SCSI_TARGET_MAX_BYTES];\r
  EFI_STATUS                      Status;\r
  UINT8                           Cdb[10];\r
\r
  ASSERT (SenseDataLength != NULL);\r
  ASSERT (HostAdapterStatus != NULL);\r
  ASSERT (TargetStatus != NULL);\r
  ASSERT (DataLength != NULL);\r
  \r
  if (ScsiIo == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  ZeroMem (&CommandPacket, sizeof (EFI_SCSI_IO_SCSI_REQUEST_PACKET));\r
  ZeroMem (Cdb, 10);\r
\r
  CommandPacket.Timeout         = Timeout;\r
  CommandPacket.InDataBuffer    = DataBuffer;\r
  CommandPacket.SenseData       = SenseData;\r
  CommandPacket.InTransferLength= *DataLength;\r
  CommandPacket.Cdb             = Cdb;\r
  //\r
  // Fill Cdb for Mode Sense (10) Command\r
  //\r
  Target = &TargetArray[0];\r
  ScsiIo->GetDeviceLocation (ScsiIo, &Target, &Lun);\r
\r
  Cdb[0]                        = EFI_SCSI_OP_MODE_SEN10;\r
  Cdb[1]                        = (UINT8) ((Lun & 0xe0) + ((DBDField << 3) & 0x08));\r
  Cdb[2]                        = (UINT8) ((PageControl & 0xc0) | (PageCode & 0x3f));\r
  Cdb[7]                        = (UINT8) (*DataLength >> 8);\r
  Cdb[8]                        = (UINT8) (*DataLength);\r
\r
  CommandPacket.CdbLength       = 10;\r
  CommandPacket.DataDirection   = EFI_SCSI_DATA_IN;\r
  CommandPacket.SenseDataLength = *SenseDataLength;\r
\r
  Status                        = ScsiIo->ExecuteScsiCommand (ScsiIo, &CommandPacket, NULL);\r
\r
  *HostAdapterStatus            = CommandPacket.HostAdapterStatus;\r
  *TargetStatus                 = CommandPacket.TargetStatus;\r
  *SenseDataLength              = CommandPacket.SenseDataLength;\r
  *DataLength                   = CommandPacket.InTransferLength;\r
\r
  return Status;\r
}\r
\r
\r
/**\r
  Function to submit SCSI request sense command.\r
\r
  @param[in]     ScsiIo             A pointer to SCSI IO protocol.\r
  @param[in]     Timeout            The length of timeout period.\r
  @param[in]     SenseData          A pointer to output sense data.\r
  @param[in out] SenseDataLength    On input, the length in bytes of the SenseData buffer. On\r
                                    output, the number of bytes written to the SenseData buffer.\r
  @param[out]    HostAdapterStatus  The status of Host Adapter.\r
  @param[out]    TargetStatus       The status of the target.\r
\r
  @retval EFI_SUCCESS        Valid data returned\r
  @retval EFI_SUCCESS        The status of the unit is tested successfully.\r
  @retval EFI_BAD_BUFFER_SIZE       The SCSI Request Packet was executed, \r
                                    but the entire DataBuffer could not be transferred.\r
                                    The actual number of bytes transferred is returned\r
                                    in TransferLength.\r
  @retval EFI_NOT_READY             The SCSI Request Packet could not be sent because \r
                                    there are too many SCSI Command Packets already \r
                                    queued.\r
  @retval EFI_DEVICE_ERROR          A device error occurred while attempting to send \r
                                    the SCSI Request Packet.\r
  @retval EFI_INVALID_PARAMETER     The contents of CommandPacket are invalid, or ScsiIo is NULL.\r
  @retval EFI_UNSUPPORTED           The command described by the SCSI Request Packet\r
                                    is not supported by the SCSI initiator(i.e., SCSI \r
                                    Host Controller).\r
  @retval EFI_TIMEOUT               A timeout occurred while waiting for the SCSI \r
                                    Request Packet to execute.\r
\r
**/\r
EFI_STATUS\r
ScsiRequestSenseCommand (\r
  IN  EFI_SCSI_IO_PROTOCOL  *ScsiIo,\r
  IN  UINT64                Timeout,\r
  IN  VOID                  *SenseData,\r
  IN OUT UINT8              *SenseDataLength,\r
  OUT UINT8                 *HostAdapterStatus,\r
  OUT UINT8                 *TargetStatus\r
  )\r
{\r
  EFI_SCSI_IO_SCSI_REQUEST_PACKET CommandPacket;\r
  UINT64                          Lun;\r
  UINT8                           *Target;\r
  UINT8                           TargetArray[EFI_SCSI_TARGET_MAX_BYTES];\r
  EFI_STATUS                      Status;\r
  UINT8                           Cdb[6];\r
\r
  ASSERT (SenseDataLength != NULL);\r
  ASSERT (HostAdapterStatus != NULL);\r
  ASSERT (TargetStatus != NULL);\r
  \r
  if (ScsiIo == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  ZeroMem (&CommandPacket, sizeof (EFI_SCSI_IO_SCSI_REQUEST_PACKET));\r
  ZeroMem (Cdb, 6);\r
\r
  CommandPacket.Timeout         = Timeout;\r
  CommandPacket.InDataBuffer    = SenseData;\r
  CommandPacket.SenseData       = NULL;\r
  CommandPacket.InTransferLength= *SenseDataLength;\r
  CommandPacket.Cdb             = Cdb;\r
  //\r
  // Fill Cdb for Request Sense Command\r
  //\r
  Target = &TargetArray[0];\r
  ScsiIo->GetDeviceLocation (ScsiIo, &Target, &Lun);\r
\r
  Cdb[0]                        = EFI_SCSI_OP_REQUEST_SENSE;\r
  Cdb[1]                        = (UINT8) (Lun & 0xe0);\r
  Cdb[4]                        = (UINT8) (*SenseDataLength);\r
\r
  CommandPacket.CdbLength       = (UINT8) 6;\r
  CommandPacket.DataDirection   = EFI_SCSI_DATA_IN;\r
  CommandPacket.SenseDataLength = 0;\r
\r
  Status                        = ScsiIo->ExecuteScsiCommand (ScsiIo, &CommandPacket, NULL);\r
\r
  *HostAdapterStatus            = CommandPacket.HostAdapterStatus;\r
  *TargetStatus                 = CommandPacket.TargetStatus;\r
  *SenseDataLength              = (UINT8) CommandPacket.InTransferLength;\r
\r
  return Status;\r
}\r
\r
\r
/**\r
  Function to submit read capacity command.\r
\r
  @param[in]     ScsiIo             A pointer to SCSI IO protocol.\r
  @param[in]     Timeout            The length of timeout period.\r
  @param[out]    SenseData          A pointer to output sense data.\r
  @param[in out] SenseDataLength    On input, the length in bytes of the SenseData buffer. On\r
                                    output, the number of bytes written to the SenseData buffer.\r
  @param[out]    HostAdapterStatus  The status of Host Adapter.\r
  @param[out]    TargetStatus       The status of the target.\r
  @param[out]    DataBuffer         A pointer to a data buffer.\r
  @param[in,out] DataLength         The length of data buffer.\r
  @param[in]     PMI                Partial medium indicator.\r
\r
  @retval  EFI_SUCCESS                The status of the unit is tested successfully.\r
  @retval  EFI_BAD_BUFFER_SIZE        The SCSI Request Packet was executed, \r
                                      but the entire DataBuffer could not be transferred.\r
                                      The actual number of bytes transferred is returned\r
                                      in TransferLength.\r
  @retval  EFI_NOT_READY              The SCSI Request Packet could not be sent because \r
                                      there are too many SCSI Command Packets already \r
                                      queued.\r
  @retval  EFI_DEVICE_ERROR           A device error occurred while attempting to send \r
                                      the SCSI Request Packet.\r
  @retval  EFI_INVALID_PARAMETER      The contents of CommandPacket are invalid, or ScsiIo is NULL.\r
  @retval  EFI_UNSUPPORTED            The command described by the SCSI Request Packet\r
                                      is not supported by the SCSI initiator(i.e., SCSI \r
                                      Host Controller).\r
  @retval  EFI_TIMEOUT                A timeout occurred while waiting for the SCSI \r
                                      Request Packet to execute.\r
\r
**/\r
EFI_STATUS\r
ScsiReadCapacityCommand (\r
  IN  EFI_SCSI_IO_PROTOCOL  *ScsiIo,\r
  IN  UINT64                Timeout,\r
  IN  VOID                  *SenseData,\r
  IN OUT UINT8              *SenseDataLength,\r
  OUT UINT8                 *HostAdapterStatus,\r
  OUT UINT8                 *TargetStatus,\r
  OUT VOID                  *DataBuffer,\r
  IN OUT UINT32             *DataLength,\r
  IN  BOOLEAN               PMI\r
  )\r
{\r
  EFI_SCSI_IO_SCSI_REQUEST_PACKET CommandPacket;\r
  UINT64                          Lun;\r
  UINT8                           *Target;\r
  UINT8                           TargetArray[EFI_SCSI_TARGET_MAX_BYTES];\r
  EFI_STATUS                      Status;\r
  UINT8                           Cdb[10];\r
\r
  ASSERT (SenseDataLength != NULL);\r
  ASSERT (HostAdapterStatus != NULL);\r
  ASSERT (TargetStatus != NULL);\r
  ASSERT (DataLength != NULL);\r
  \r
  if (ScsiIo == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  ZeroMem (&CommandPacket, sizeof (EFI_SCSI_IO_SCSI_REQUEST_PACKET));\r
  ZeroMem (Cdb, 10);\r
\r
  CommandPacket.Timeout         = Timeout;\r
  CommandPacket.InDataBuffer    = DataBuffer;\r
  CommandPacket.SenseData       = SenseData;\r
  CommandPacket.InTransferLength= *DataLength;\r
  CommandPacket.Cdb             = Cdb;\r
  //\r
  // Fill Cdb for Read Capacity Command\r
  //\r
  Target = &TargetArray[0];\r
  ScsiIo->GetDeviceLocation (ScsiIo, &Target, &Lun);\r
\r
  Cdb[0]  = EFI_SCSI_OP_READ_CAPACITY;\r
  Cdb[1]  = (UINT8) (Lun & 0xe0);\r
  if (!PMI) {\r
    //\r
    // Partial medium indicator,if PMI is FALSE, the Cdb.2 ~ Cdb.5 MUST BE ZERO.\r
    //\r
    ZeroMem ((Cdb + 2), 4);\r
  } else {\r
    Cdb[8] |= 0x01;\r
  }\r
\r
  CommandPacket.CdbLength       = 10;\r
  CommandPacket.DataDirection   = EFI_SCSI_DATA_IN;\r
  CommandPacket.SenseDataLength = *SenseDataLength;\r
\r
  Status                        = ScsiIo->ExecuteScsiCommand (ScsiIo, &CommandPacket, NULL);\r
\r
  *HostAdapterStatus            = CommandPacket.HostAdapterStatus;\r
  *TargetStatus                 = CommandPacket.TargetStatus;\r
  *SenseDataLength              = CommandPacket.SenseDataLength;\r
  *DataLength                   = CommandPacket.InTransferLength;\r
\r
  return Status;\r
}\r
\r
\r
/**\r
  Function to submit read 10 command.\r
\r
  @param[in]     ScsiIo             A pointer to SCSI IO protocol.\r
  @param[in]     Timeout            The length of timeout period.\r
  @param[out]    SenseData          A pointer to output sense data.\r
  @param[in out] SenseDataLength    On input, the length in bytes of the SenseData buffer. On\r
                                    output, the number of bytes written to the SenseData buffer.\r
  @param[out]    HostAdapterStatus  The status of Host Adapter.\r
  @param[out]    TargetStatus       The status of the target.\r
  @param[out]    DataBuffer         Read 10 command data.\r
  @param[in,out] DataLength         The length of data buffer.\r
  @param[in]     StartLba           The start address of LBA.\r
  @param[in]     SectorSize         The sector size.\r
\r
  @retval EFI_SUCCESS               The status of the unit is tested successfully.\r
  @retval EFI_BAD_BUFFER_SIZE       The SCSI Request Packet was executed, \r
                                    but the entire DataBuffer could not be transferred.\r
                                    The actual number of bytes transferred is returned\r
                                    in TransferLength.\r
  @retval EFI_NOT_READY             The SCSI Request Packet could not be sent because \r
                                    there are too many SCSI Command Packets already \r
                                    queued.\r
  @retval EFI_DEVICE_ERROR          A device error occurred while attempting to send \r
                                    the SCSI Request Packet.\r
  @retval EFI_INVALID_PARAMETER     The contents of CommandPacket are invalid, or ScsiIo is NULL.\r
  @retval EFI_UNSUPPORTED           The command described by the SCSI Request Packet\r
                                    is not supported by the SCSI initiator(i.e., SCSI \r
                                    Host Controller).\r
  @retval EFI_TIMEOUT               A timeout occurred while waiting for the SCSI \r
                                    Request Packet to execute.\r
\r
**/\r
EFI_STATUS\r
ScsiRead10Command (\r
  IN  EFI_SCSI_IO_PROTOCOL  *ScsiIo,\r
  IN  UINT64                Timeout,\r
  IN  VOID                  *SenseData,\r
  IN OUT UINT8              *SenseDataLength,\r
  OUT UINT8                 *HostAdapterStatus,\r
  OUT UINT8                 *TargetStatus,\r
  OUT VOID                  *DataBuffer,\r
  IN OUT UINT32             *DataLength,\r
  IN  UINT32                StartLba,\r
  IN  UINT32                SectorSize\r
  )\r
{\r
  EFI_SCSI_IO_SCSI_REQUEST_PACKET CommandPacket;\r
  UINT64                          Lun;\r
  UINT8                           *Target;\r
  UINT8                           TargetArray[EFI_SCSI_TARGET_MAX_BYTES];\r
  EFI_STATUS                      Status;\r
  UINT8                           Cdb[10];\r
\r
  ASSERT (SenseDataLength != NULL);\r
  ASSERT (HostAdapterStatus != NULL);\r
  ASSERT (TargetStatus != NULL);\r
  ASSERT (DataLength != NULL);\r
  \r
  if (ScsiIo == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  ZeroMem (&CommandPacket, sizeof (EFI_SCSI_IO_SCSI_REQUEST_PACKET));\r
  ZeroMem (Cdb, 10);\r
\r
  CommandPacket.Timeout         = Timeout;\r
  CommandPacket.InDataBuffer    = DataBuffer;\r
  CommandPacket.SenseData       = SenseData;\r
  CommandPacket.InTransferLength= *DataLength;\r
  CommandPacket.Cdb             = Cdb;\r
  //\r
  // Fill Cdb for Read (10) Command\r
  //\r
  Target = &TargetArray[0];\r
  ScsiIo->GetDeviceLocation (ScsiIo, &Target, &Lun);\r
\r
  Cdb[0]                        = EFI_SCSI_OP_READ10;\r
  Cdb[1]                        = (UINT8) (Lun & 0xe0);\r
  Cdb[2]                        = (UINT8) (StartLba >> 24);\r
  Cdb[3]                        = (UINT8) (StartLba >> 16);\r
  Cdb[4]                        = (UINT8) (StartLba >> 8);\r
  Cdb[5]                        = (UINT8) (StartLba & 0xff);\r
  Cdb[7]                        = (UINT8) (SectorSize >> 8);\r
  Cdb[8]                        = (UINT8) (SectorSize & 0xff);\r
\r
  CommandPacket.CdbLength       = 10;\r
  CommandPacket.DataDirection   = EFI_SCSI_DATA_IN;\r
  CommandPacket.SenseDataLength = *SenseDataLength;\r
\r
  Status                        = ScsiIo->ExecuteScsiCommand (ScsiIo, &CommandPacket, NULL);\r
\r
  *HostAdapterStatus            = CommandPacket.HostAdapterStatus;\r
  *TargetStatus                 = CommandPacket.TargetStatus;\r
  *SenseDataLength              = CommandPacket.SenseDataLength;\r
  *DataLength                   = CommandPacket.InTransferLength;\r
\r
  return Status;\r
}\r
\r
\r
/**\r
  Function to submit SCSI write 10 command.\r
\r
  @param[in]     ScsiIo             SCSI IO Protocol to use\r
  @param[in]     Timeout            The length of timeout period.\r
  @param[out]    SenseData          A pointer to output sense data.\r
  @param[in out] SenseDataLength    On input, the length in bytes of the SenseData buffer. On\r
                                    output, the number of bytes written to the SenseData buffer.\r
  @param[out]    HostAdapterStatus  The status of Host Adapter.\r
  @param[out]    TargetStatus       The status of the target.\r
  @param[out]    DataBuffer         A pointer to a data buffer.\r
  @param[in,out] DataLength         The length of data buffer.\r
  @param[in]     StartLba           The start address of LBA.\r
  @param[in]     SectorSize         The sector size.\r
\r
  @retval EFI_SUCCESS               The status of the unit is tested successfully.\r
  @retval EFI_BAD_BUFFER_SIZE       The SCSI Request Packet was executed, \r
                                    but the entire DataBuffer could not be transferred.\r
                                    The actual number of bytes transferred is returned\r
                                    in InTransferLength.\r
  @retval EFI_NOT_READY             The SCSI Request Packet could not be sent because \r
                                    there are too many SCSI Command Packets already \r
                                    queued.\r
  @retval EFI_DEVICE_ERROR          A device error occurred while attempting to send \r
                                    the SCSI Request Packet.\r
  @retval EFI_INVALID_PARAMETER     The contents of CommandPacket are invalid, or ScsiIo is NULL.\r
  @retval EFI_UNSUPPORTED           The command described by the SCSI Request Packet\r
                                    is not supported by the SCSI initiator(i.e., SCSI \r
                                    Host Controller).\r
  @retval EFI_TIMEOUT               A timeout occurred while waiting for the SCSI \r
                                    Request Packet to execute.\r
\r
**/\r
EFI_STATUS\r
ScsiWrite10Command (\r
  IN  EFI_SCSI_IO_PROTOCOL  *ScsiIo,\r
  IN  UINT64                Timeout,\r
  IN  VOID                  *SenseData,\r
  IN OUT UINT8              *SenseDataLength,\r
  OUT UINT8                 *HostAdapterStatus,\r
  OUT UINT8                 *TargetStatus,\r
  OUT VOID                  *DataBuffer,\r
  IN OUT UINT32             *DataLength,\r
  IN  UINT32                StartLba,\r
  IN  UINT32                SectorSize\r
  )\r
{\r
  EFI_SCSI_IO_SCSI_REQUEST_PACKET CommandPacket;\r
  UINT64                          Lun;\r
  UINT8                           *Target;\r
  UINT8                           TargetArray[EFI_SCSI_TARGET_MAX_BYTES];\r
  EFI_STATUS                      Status;\r
  UINT8                           Cdb[10];\r
\r
  ASSERT (SenseDataLength != NULL);\r
  ASSERT (HostAdapterStatus != NULL);\r
  ASSERT (TargetStatus != NULL);\r
  ASSERT (DataLength != NULL);\r
  \r
  if (ScsiIo == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  ZeroMem (&CommandPacket, sizeof (EFI_SCSI_IO_SCSI_REQUEST_PACKET));\r
  ZeroMem (Cdb, 10);\r
\r
  CommandPacket.Timeout         = Timeout;\r
  CommandPacket.OutDataBuffer    = DataBuffer;\r
  CommandPacket.SenseData       = SenseData;\r
  CommandPacket.OutTransferLength= *DataLength;\r
  CommandPacket.Cdb             = Cdb;\r
  //\r
  // Fill Cdb for Write (10) Command\r
  //\r
  Target = &TargetArray[0];\r
  ScsiIo->GetDeviceLocation (ScsiIo, &Target, &Lun);\r
\r
  Cdb[0]                        = EFI_SCSI_OP_WRITE10;\r
  Cdb[1]                        = (UINT8) (Lun & 0xe0);\r
  Cdb[2]                        = (UINT8) (StartLba >> 24);\r
  Cdb[3]                        = (UINT8) (StartLba >> 16);\r
  Cdb[4]                        = (UINT8) (StartLba >> 8);\r
  Cdb[5]                        = (UINT8) StartLba;\r
  Cdb[7]                        = (UINT8) (SectorSize >> 8);\r
  Cdb[8]                        = (UINT8) SectorSize;\r
\r
  CommandPacket.CdbLength       = 10;\r
  CommandPacket.DataDirection   = EFI_SCSI_DATA_OUT;\r
  CommandPacket.SenseDataLength = *SenseDataLength;\r
\r
  Status                        = ScsiIo->ExecuteScsiCommand (ScsiIo, &CommandPacket, NULL);\r
\r
  *HostAdapterStatus            = CommandPacket.HostAdapterStatus;\r
  *TargetStatus                 = CommandPacket.TargetStatus;\r
  *SenseDataLength              = CommandPacket.SenseDataLength;\r
  *DataLength                   = CommandPacket.OutTransferLength;\r
\r
  return Status;\r
}\r