To support GPI number > 64, PI 1.4 clarified SMM GpiNum meaning as below:
typedef struct {
UINT64 GpiNum;
} EFI_SMM_GPI_REGISTER_CONTEXT;
Instead of the bit mask of 64 possible GPIs, GpiNum is one of 2^64 possible
GPIs that can generate an SMI. A 0 corresponds to logical GPI[00],
1 corresponds to logical GPI[1], and so on, and GpiNum of N corresponds to
GPI[N], where N can span from 0 to 2^64-1.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff....@intel.com>
---
MdePkg/Include/Protocol/SmmGpiDispatch2.h | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/MdePkg/Include/Protocol/SmmGpiDispatch2.h
b/MdePkg/Include/Protocol/SmmGpiDispatch2.h
index bc06b13..65be0ce 100644
--- a/MdePkg/Include/Protocol/SmmGpiDispatch2.h
+++ b/MdePkg/Include/Protocol/SmmGpiDispatch2.h
@@ -9,7 +9,7 @@
given event types. Several inputs can be enabled. This purpose of this
interface is to generate an
SMI in response to any of these inputs having a true value provided.
- Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2009 - 2015, 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
which accompanies this distribution. The full text of the license may be
found at
@@ -38,8 +38,9 @@
///
typedef struct {
///
- /// A bit mask of 64 possible GPIs that can generate an SMI. Bit 0
corresponds to logical
- /// GPI[0], 1 corresponds to logical GPI[1], and so on.
+ /// A number from one of 2^64 possible GPIs that can generate an SMI. A
+ /// 0 corresponds to logical GPI[0]; 1 corresponds to logical GPI[1]; and
+ /// GpiNum of N corresponds to GPI[N], where N can span from 0 to 2^64-1.
///
UINT64 GpiNum;
} EFI_SMM_GPI_REGISTER_CONTEXT;
--
1.9.5.msysgit.0
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