/** @file
  This protocol defines the generic memory test interfaces in Dxe phase.

Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under 
the terms and conditions of the BSD License that accompanies this distribution.  
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.                                            

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#ifndef __GENERIC_MEMORY_TEST_H__
#define __GENERIC_MEMORY_TEST_H__

#define EFI_GENERIC_MEMORY_TEST_PROTOCOL_GUID  \
  { 0x309de7f1, 0x7f5e, 0x4ace, {0xb4, 0x9c, 0x53, 0x1b, 0xe5, 0xaa, 0x95, 0xef} }

typedef struct _EFI_GENERIC_MEMORY_TEST_PROTOCOL  EFI_GENERIC_MEMORY_TEST_PROTOCOL;

///
/// Memory test coverage level.
/// Ignore chooses not to test memory. Quick and Sparse test some memory, and Extensive performs a detailed memory test.
///
typedef enum {
  IGNORE,
  QUICK,
  SPARSE,
  EXTENSIVE,
  MAXLEVEL
} EXTENDMEM_COVERAGE_LEVEL;


/**
  Initialize the generic memory test.

  @param  This                The protocol instance pointer. 
  @param  Level               The coverage level of the memory test. 
  @param  RequireSoftECCInit  Indicate if the memory need software ECC init. 

  @retval EFI_SUCCESS         The generic memory test is initialized correctly. 
  @retval EFI_NO_MEDIA        The system had no memory to be tested. 

**/
typedef
EFI_STATUS
(EFIAPI *EFI_MEMORY_TEST_INIT)(
  IN EFI_GENERIC_MEMORY_TEST_PROTOCOL          *This,
  IN  EXTENDMEM_COVERAGE_LEVEL                 Level,
  OUT BOOLEAN                                  *RequireSoftECCInit
  );


/**
  Perform the memory test.

  @param  This                The protocol instance pointer. 
  @param  TestedMemorySize    Return the tested extended memory size. 
  @param  TotalMemorySize     Return the whole system physical memory size. 
                              The total memory size does not include memory in a slot with a disabled DIMM.  
  @param  ErrorOut            TRUE if the memory error occured.
  @param  IfTestAbort         Indicates that the user pressed "ESC" to skip the memory test. 

  @retval EFI_SUCCESS         One block of memory passed the test.
  @retval EFI_NOT_FOUND       All memory blocks have already been tested.
  @retval EFI_DEVICE_ERROR    Memory device error occured, and no agent can handle it.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_PERFORM_MEMORY_TEST)(
  IN EFI_GENERIC_MEMORY_TEST_PROTOCOL          *This,
  OUT UINT64                                   *TestedMemorySize,
  OUT UINT64                                   *TotalMemorySize,
  OUT BOOLEAN                                  *ErrorOut,
  IN BOOLEAN                                   IfTestAbort
  );


/**
  Finish the memory test.

  @param  This                The protocol instance pointer. 

  @retval EFI_SUCCESS         Success. All resources used in the memory test are freed.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_MEMORY_TEST_FINISHED)(
  IN EFI_GENERIC_MEMORY_TEST_PROTOCOL *This
  );

/**
  Provides the capability to test the compatible range used by some special drivers.

  @param  This                The protocol instance pointer. 
  @param  StartAddress        The start address of the compatible memory range that
                              must be below 16M.
  @param  Length              The compatible memory range's length. 
  
  @retval EFI_SUCCESS           The compatible memory range pass the memory test. 
  @retval EFI_INVALID_PARAMETER The compatible memory range are not below Low 16M.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_MEMORY_TEST_COMPATIBLE_RANGE)(
  IN EFI_GENERIC_MEMORY_TEST_PROTOCOL          *This,
  IN  EFI_PHYSICAL_ADDRESS                     StartAddress,
  IN  UINT64                                   Length
  );

struct _EFI_GENERIC_MEMORY_TEST_PROTOCOL {
  EFI_MEMORY_TEST_INIT              MemoryTestInit;
  EFI_PERFORM_MEMORY_TEST           PerformMemoryTest;
  EFI_MEMORY_TEST_FINISHED          Finished;
  EFI_MEMORY_TEST_COMPATIBLE_RANGE  CompatibleRangeTest;
};

extern EFI_GUID gEfiGenericMemTestProtocolGuid;

#endif

