X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FLibrary%2FUefiScsiLib%2FUefiScsiLib.c;h=1458efd2f918dced2b563fe0e826611050b253d6;hp=e26905e1e33e9dbc61bf2ebae9dcf7b300a342b3;hb=ccb491c862cf5137fd4645f83adf529f17313858;hpb=312bc8f87333373d232ec51c99991130ea64fe72

diff --git a/MdePkg/Library/UefiScsiLib/UefiScsiLib.c b/MdePkg/Library/UefiScsiLib/UefiScsiLib.c
index e26905e1e3..1458efd2f9 100644
--- a/MdePkg/Library/UefiScsiLib/UefiScsiLib.c
+++ b/MdePkg/Library/UefiScsiLib/UefiScsiLib.c
@@ -635,6 +635,100 @@ ScsiReadCapacityCommand (
 }
 
 
+/**
+  Function to submit read capacity16 command.
+
+  @param  ScsiIo            A pointer to SCSI IO protocol.
+  @param  Timeout           The length of timeout period.
+  @param  SenseData         A pointer to output sense data.
+  @param  SenseDataLength   The length of output sense data.
+  @param  HostAdapterStatus The status of Host Adapter.
+  @param  TargetStatus      The status of the target.
+  @param  DataBuffer        A pointer to a data buffer.
+  @param  DataLength        The length of data buffer.
+  @param  PMI               Partial medium indicator.
+
+  @retval  EFI_SUCCESS            The status of the unit is tested successfully.
+  @retval  EFI_BAD_BUFFER_SIZE    The SCSI Request Packet was executed, 
+                                  but the entire DataBuffer could not be transferred.
+                                  The actual number of bytes transferred is returned
+                                  in TransferLength.
+  @retval  EFI_NOT_READY          The SCSI Request Packet could not be sent because 
+                                  there are too many SCSI Command Packets already 
+                                  queued.
+  @retval  EFI_DEVICE_ERROR       A device error occurred while attempting to send 
+                                  the SCSI Request Packet.
+  @retval  EFI_INVALID_PARAMETER  The contents of CommandPacket are invalid.  
+  @retval  EFI_UNSUPPORTED        The command described by the SCSI Request Packet
+                                  is not supported by the SCSI initiator(i.e., SCSI 
+                                  Host Controller).
+  @retval  EFI_TIMEOUT            A timeout occurred while waiting for the SCSI 
+                                  Request Packet to execute.
+
+**/
+
+EFI_STATUS
+EFIAPI
+ScsiReadCapacity16Command (
+  IN  EFI_SCSI_IO_PROTOCOL  *ScsiIo,
+  IN  UINT64                Timeout,
+  IN  VOID                  *SenseData,
+  IN OUT UINT8              *SenseDataLength,
+  OUT UINT8                 *HostAdapterStatus,
+  OUT UINT8                 *TargetStatus,
+  OUT VOID                  *DataBuffer,
+  IN OUT UINT32             *DataLength,
+  IN  BOOLEAN               PMI
+  )
+{
+  EFI_SCSI_IO_SCSI_REQUEST_PACKET CommandPacket;
+  UINT64                          Lun;
+  UINT8                           *Target;
+  UINT8                           TargetArray[EFI_SCSI_TARGET_MAX_BYTES];
+  EFI_STATUS                      Status;
+  UINT8                           Cdb[16];
+
+  ZeroMem (&CommandPacket, sizeof (EFI_SCSI_IO_SCSI_REQUEST_PACKET));
+  ZeroMem (Cdb, 16);
+
+  CommandPacket.Timeout         = Timeout;
+  CommandPacket.InDataBuffer    = DataBuffer;
+  CommandPacket.SenseData       = SenseData;
+  CommandPacket.InTransferLength= *DataLength;
+  CommandPacket.Cdb             = Cdb;
+  //
+  // Fill Cdb for Read Capacity Command
+  //
+  Target = &TargetArray[0];
+  ScsiIo->GetDeviceLocation (ScsiIo, &Target, &Lun);
+
+  Cdb[0]  = EFI_SCSI_OP_READ_CAPACITY16;
+  Cdb[1]  = 0x10;
+  if (!PMI) {
+    //
+    // Partial medium indicator,if PMI is FALSE, the Cdb.2 ~ Cdb.9 MUST BE ZERO.
+    //
+    ZeroMem ((Cdb + 2), 8);
+  } else {
+    Cdb[14] |= 0x01;
+  }
+
+  Cdb[13] = 0x20;
+  CommandPacket.CdbLength       = 16;
+  CommandPacket.DataDirection   = EFI_SCSI_DATA_IN;
+  CommandPacket.SenseDataLength = *SenseDataLength;
+
+  Status                        = ScsiIo->ExecuteScsiCommand (ScsiIo, &CommandPacket, NULL);
+
+  *HostAdapterStatus            = CommandPacket.HostAdapterStatus;
+  *TargetStatus                 = CommandPacket.TargetStatus;
+  *SenseDataLength              = CommandPacket.SenseDataLength;
+  *DataLength                   = CommandPacket.InTransferLength;
+
+  return Status;
+}
+
+
 /**
   Execute Read(10) SCSI command on a specific SCSI target.