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MdePkg/SmmGipDispatch2.h: SMM GpiNum meaning clarification 

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.fan@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17350 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Jeff Fan 2015-05-07 02:31:30 +00:00 committed by vanjeff
parent aeb4c944ba
commit 035987042c
1 changed files with 4 additions and 3 deletions
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7
MdePkg/Include/Protocol/SmmGpiDispatch2.h
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@ -9,7 +9,7 @@
given event types. Several inputs can be enabled. This purpose of this interface is to generate an 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. 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 This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License 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 which accompanies this distribution. The full text of the license may be found at
@ -38,8 +38,9 @@
/// ///
typedef struct { typedef struct {
/// ///
/// A bit mask of 64 possible GPIs that can generate an SMI. Bit 0 corresponds to logical /// A number from one of 2^64 possible GPIs that can generate an SMI. A
/// GPI[0], 1 corresponds to logical GPI[1], and so on. /// 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; UINT64 GpiNum;
} EFI_SMM_GPI_REGISTER_CONTEXT; } EFI_SMM_GPI_REGISTER_CONTEXT;