diff options
6 files changed, 112 insertions, 4 deletions
diff --git a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf index bd1bec3fb5..bcd79355ba 100755 --- a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf +++ b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf @@ -1,7 +1,7 @@ ## @file
# Base Synchronization Library implementation.
#
-# Copyright (c) 2007 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2007 - 2016, Intel Corporation. All rights reserved.<BR>
# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
#
# This program and the accompanying materials
@@ -30,6 +30,7 @@ BaseSynchronizationLibInternals.h
[Sources.IA32]
+ Ia32/InternalGetSpinLockProperties.c | MSFT
Ia32/InterlockedCompareExchange64.c | MSFT
Ia32/InterlockedCompareExchange32.c | MSFT
Ia32/InterlockedCompareExchange16.c | MSFT
@@ -44,10 +45,12 @@ Ia32/InterlockedIncrement.asm | INTEL
Synchronization.c | INTEL
+ Ia32/InternalGetSpinLockProperties.c | GCC
Ia32/GccInline.c | GCC
SynchronizationGcc.c | GCC
[Sources.X64]
+ Ia32/InternalGetSpinLockProperties.c | MSFT
X64/InterlockedCompareExchange64.c | MSFT
X64/InterlockedCompareExchange32.c | MSFT
X64/InterlockedCompareExchange16.c | MSFT
@@ -64,6 +67,7 @@ X64/InterlockedIncrement.asm | INTEL
Synchronization.c | INTEL
+ Ia32/InternalGetSpinLockProperties.c | GCC
X64/GccInline.c | GCC
SynchronizationGcc.c | GCC
@@ -73,6 +77,9 @@ Ipf/InterlockedCompareExchange32.s
Ipf/InterlockedCompareExchange16.s
+ Ipf/InternalGetSpinLockProperties.c | MSFT
+ Ipf/InternalGetSpinLockProperties.c | GCC
+
Synchronization.c | INTEL
SynchronizationMsc.c | MSFT
SynchronizationGcc.c | GCC
diff --git a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLibInternals.h b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLibInternals.h index 76f7023241..9716b9276b 100644 --- a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLibInternals.h +++ b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLibInternals.h @@ -1,7 +1,7 @@ /** @file
Declaration of internal functions in BaseSynchronizationLib.
- Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2006 - 2016, 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
@@ -138,4 +138,16 @@ InternalSyncCompareExchange64 ( IN UINT64 ExchangeValue
);
+/**
+ Internal function to retrieve the architecture specific spin lock alignment
+ requirements for optimal spin lock performance.
+
+ @return The architecture specific spin lock alignment.
+
+**/
+UINTN
+InternalGetSpinLockProperties (
+ VOID
+ );
+
#endif
diff --git a/MdePkg/Library/BaseSynchronizationLib/Ia32/InternalGetSpinLockProperties.c b/MdePkg/Library/BaseSynchronizationLib/Ia32/InternalGetSpinLockProperties.c new file mode 100644 index 0000000000..49f05fb18a --- /dev/null +++ b/MdePkg/Library/BaseSynchronizationLib/Ia32/InternalGetSpinLockProperties.c @@ -0,0 +1,60 @@ +/** @file
+ Internal function to get spin lock alignment.
+
+ Copyright (c) 2016, 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
+ 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.
+
+**/
+
+#include "BaseSynchronizationLibInternals.h"
+
+/**
+ Internal function to retrieve the architecture specific spin lock alignment
+ requirements for optimal spin lock performance.
+
+ @return The architecture specific spin lock alignment.
+
+**/
+UINTN
+InternalGetSpinLockProperties (
+ VOID
+ )
+{
+ UINT32 RegEax;
+ UINT32 RegEbx;
+ UINTN FamilyId;
+ UINTN ModelId;
+ UINTN CacheLineSize;
+
+ //
+ // Retrieve CPUID Version Information
+ //
+ AsmCpuid (0x01, &RegEax, &RegEbx, NULL, NULL);
+ //
+ // EBX: Bits 15 - 08: CLFLUSH line size (Value * 8 = cache line size)
+ //
+ CacheLineSize = ((RegEbx >> 8) & 0xff) * 8;
+ //
+ // Retrieve CPU Family and Model
+ //
+ FamilyId = (RegEax >> 8) & 0xf;
+ ModelId = (RegEax >> 4) & 0xf;
+ if (FamilyId == 0x0f) {
+ //
+ // In processors based on Intel NetBurst microarchitecture, use two cache lines
+ //
+ ModelId = ModelId | ((RegEax >> 12) & 0xf0);
+ if (ModelId <= 0x04 || ModelId == 0x06) {
+ CacheLineSize *= 2;
+ }
+ }
+
+ return CacheLineSize;
+}
+
diff --git a/MdePkg/Library/BaseSynchronizationLib/Ipf/InternalGetSpinLockProperties.c b/MdePkg/Library/BaseSynchronizationLib/Ipf/InternalGetSpinLockProperties.c new file mode 100644 index 0000000000..f6464c2db7 --- /dev/null +++ b/MdePkg/Library/BaseSynchronizationLib/Ipf/InternalGetSpinLockProperties.c @@ -0,0 +1,29 @@ +/** @file
+ Internal function to get spin lock alignment.
+
+ Copyright (c) 2016, 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
+ 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.
+
+**/
+
+/**
+ Internal function to retrieve the architecture specific spin lock alignment
+ requirements for optimal spin lock performance.
+
+ @return The architecture specific spin lock alignment.
+
+**/
+UINTN
+InternalGetSpinLockProperties (
+ VOID
+ )
+{
+ return 32;
+}
+
diff --git a/MdePkg/Library/BaseSynchronizationLib/SynchronizationGcc.c b/MdePkg/Library/BaseSynchronizationLib/SynchronizationGcc.c index 31f28ec2c5..4b8c8e59c8 100644 --- a/MdePkg/Library/BaseSynchronizationLib/SynchronizationGcc.c +++ b/MdePkg/Library/BaseSynchronizationLib/SynchronizationGcc.c @@ -45,7 +45,7 @@ GetSpinLockProperties ( VOID
)
{
- return 32;
+ return InternalGetSpinLockProperties ();
}
/**
diff --git a/MdePkg/Library/BaseSynchronizationLib/SynchronizationMsc.c b/MdePkg/Library/BaseSynchronizationLib/SynchronizationMsc.c index 821c798121..db344b7e64 100644 --- a/MdePkg/Library/BaseSynchronizationLib/SynchronizationMsc.c +++ b/MdePkg/Library/BaseSynchronizationLib/SynchronizationMsc.c @@ -47,7 +47,7 @@ GetSpinLockProperties ( VOID
)
{
- return 32;
+ return InternalGetSpinLockProperties ();
}
/**
|