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MdePkg MmCommunication.h: Follow PI spec to update EFI_MM_COMMUNICATE 

Follow PI spec (>= 1.5) to add new return status code description
and make CommSize OPTIONAL.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Star Zeng 2017-12-05 11:23:18 +08:00
parent fdd8463d7b
commit c53190e910
1 changed files with 12 additions and 2 deletions
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12
MdePkg/Include/Protocol/MmCommunication.h
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@ -57,16 +57,26 @@ typedef struct _EFI_MM_COMMUNICATION_PROTOCOL EFI_MM_COMMUNICATION_PROTOCOL;
@param[in] CommBuffer A pointer to the buffer to convey into MMRAM.
@param[in] CommSize The size of the data buffer being passed in. On exit, the size of data
being returned. Zero if the handler does not wish to reply with any data.
This parameter is optional and may be NULL.
@retval EFI_SUCCESS The message was successfully posted.
@retval EFI_INVALID_PARAMETER The CommBuffer was NULL.
@retval EFI_BAD_BUFFER_SIZE The buffer is too large for the MM implementation.
If this error is returned, the MessageLength field
in the CommBuffer header or the integer pointed by
CommSize, are updated to reflect the maximum payload
size the implementation can accommodate.
@retval EFI_ACCESS_DENIED The CommunicateBuffer parameter or CommSize parameter,
if not omitted, are in address range that cannot be
accessed by the MM environment.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_MM_COMMUNICATE)(
IN CONST EFI_MM_COMMUNICATION_PROTOCOL *This,
IN OUT VOID *CommBuffer,
IN OUT UINTN *CommSize
IN OUT UINTN *CommSize OPTIONAL
);
///