We don't advocate putting compiler specifics in libraries or drivers but there\r
is no other way to make this work.\r
\r
- Copyright (c) 2006, Intel Corporation<BR>\r
+ Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
All rights reserved. This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
- Module Name: IoLibMsc.c\r
-\r
**/\r
\r
\r
-#if _MSC_EXTENSIONS\r
+//\r
+// Include common header file for this module.\r
+//\r
+#include "BaseIoLibIntrinsicInternal.h"\r
\r
//\r
// Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics\r
//\r
-int _inp (unsigned short port);\r
+int _inp (unsigned short port);\r
unsigned short _inpw (unsigned short port);\r
unsigned long _inpd (unsigned short port);\r
int _outp (unsigned short port, int databyte );\r
-unsigned short _outpw(unsigned short port, unsigned short dataword );\r
-unsigned long _outpd(unsigned short port, unsigned long dataword );\r
+unsigned short _outpw (unsigned short port, unsigned short dataword );\r
+unsigned long _outpd (unsigned short port, unsigned long dataword );\r
+void _ReadWriteBarrier (void);\r
\r
#pragma intrinsic(_inp)\r
#pragma intrinsic(_inpw)\r
#pragma intrinsic(_outp)\r
#pragma intrinsic(_outpw)\r
#pragma intrinsic(_outpd)\r
+#pragma intrinsic(_ReadWriteBarrier)\r
\r
+//\r
+// _ReadWriteBarrier() forces memory reads and writes to complete at the point\r
+// in the call. This is only a hint to the compiler and does emit code.\r
+// In past versions of the compiler, _ReadWriteBarrier was enforced only\r
+// locally and did not affect functions up the call tree. In Visual C++\r
+// 2005, _ReadWriteBarrier is enforced all the way up the call tree.\r
+//\r
\r
/**\r
Reads an 8-bit I/O port.\r
IN UINTN Port\r
)\r
{\r
- return (UINT8)_inp ((UINT16)Port);\r
+ UINT8 Value;\r
+\r
+ _ReadWriteBarrier ();\r
+ Value = (UINT8)_inp ((UINT16)Port);\r
+ _ReadWriteBarrier ();\r
+ return Value;\r
}\r
\r
/**\r
IN UINT8 Value\r
)\r
{\r
- return (UINT8)_outp ((UINT16)Port, Value);\r
+ _ReadWriteBarrier ();\r
+ (UINT8)_outp ((UINT16)Port, Value);\r
+ _ReadWriteBarrier ();\r
+ return Value;\r
}\r
\r
/**\r
IN UINTN Port\r
)\r
{\r
+ UINT16 Value;\r
+\r
ASSERT ((Port & 1) == 0);\r
- return _inpw((UINT16)Port);\r
+ _ReadWriteBarrier ();\r
+ Value = _inpw ((UINT16)Port);\r
+ _ReadWriteBarrier ();\r
+ return Value;\r
}\r
\r
/**\r
)\r
{\r
ASSERT ((Port & 1) == 0);\r
- return _outpw ((UINT16)Port, Value);\r
+ _ReadWriteBarrier ();\r
+ _outpw ((UINT16)Port, Value);\r
+ _ReadWriteBarrier ();\r
+ return Value;\r
}\r
\r
/**\r
IN UINTN Port\r
)\r
{\r
+ UINT32 Value;\r
+\r
ASSERT ((Port & 3) == 0);\r
- return _inpd((UINT16)Port);\r
+ _ReadWriteBarrier ();\r
+ Value = _inpd ((UINT16)Port);\r
+ _ReadWriteBarrier ();\r
+ return Value;\r
}\r
\r
/**\r
)\r
{\r
ASSERT ((Port & 3) == 0);\r
- return _outpd ((UINT16)Port, Value);\r
+ _ReadWriteBarrier ();\r
+ _outpd ((UINT16)Port, Value);\r
+ _ReadWriteBarrier ();\r
+ return Value;\r
+}\r
+\r
+\r
+/**\r
+ Reads an 8-bit MMIO register.\r
+\r
+ Reads the 8-bit MMIO register specified by Address. The 8-bit read value is\r
+ returned. This function must guarantee that all MMIO read and write\r
+ operations are serialized.\r
+\r
+ If 8-bit MMIO register operations are not supported, then ASSERT().\r
+\r
+ @param Address The MMIO register to read.\r
+\r
+ @return The value read.\r
+\r
+**/\r
+UINT8\r
+EFIAPI\r
+MmioRead8 (\r
+ IN UINTN Address\r
+ )\r
+{\r
+ UINT8 Value;\r
+\r
+ Value = *(volatile UINT8*)Address;\r
+ return Value;\r
+}\r
+\r
+/**\r
+ Writes an 8-bit MMIO register.\r
+\r
+ Writes the 8-bit MMIO register specified by Address with the value specified\r
+ by Value and returns Value. This function must guarantee that all MMIO read\r
+ and write operations are serialized.\r
+\r
+ If 8-bit MMIO register operations are not supported, then ASSERT().\r
+\r
+ @param Address The MMIO register to write.\r
+ @param Value The value to write to the MMIO register.\r
+\r
+**/\r
+UINT8\r
+EFIAPI\r
+MmioWrite8 (\r
+ IN UINTN Address,\r
+ IN UINT8 Value\r
+ )\r
+{\r
+ return *(volatile UINT8*)Address = Value;\r
+}\r
+\r
+/**\r
+ Reads a 16-bit MMIO register.\r
+\r
+ Reads the 16-bit MMIO register specified by Address. The 16-bit read value is\r
+ returned. This function must guarantee that all MMIO read and write\r
+ operations are serialized.\r
+\r
+ If 16-bit MMIO register operations are not supported, then ASSERT().\r
+\r
+ @param Address The MMIO register to read.\r
+\r
+ @return The value read.\r
+\r
+**/\r
+UINT16\r
+EFIAPI\r
+MmioRead16 (\r
+ IN UINTN Address\r
+ )\r
+{\r
+ UINT16 Value;\r
+\r
+ ASSERT ((Address & 1) == 0);\r
+ Value = *(volatile UINT16*)Address;\r
+ return Value;\r
+}\r
+\r
+/**\r
+ Writes a 16-bit MMIO register.\r
+\r
+ Writes the 16-bit MMIO register specified by Address with the value specified\r
+ by Value and returns Value. This function must guarantee that all MMIO read\r
+ and write operations are serialized.\r
+\r
+ If 16-bit MMIO register operations are not supported, then ASSERT().\r
+\r
+ @param Address The MMIO register to write.\r
+ @param Value The value to write to the MMIO register.\r
+\r
+**/\r
+UINT16\r
+EFIAPI\r
+MmioWrite16 (\r
+ IN UINTN Address,\r
+ IN UINT16 Value\r
+ )\r
+{\r
+ ASSERT ((Address & 1) == 0);\r
+ return *(volatile UINT16*)Address = Value;\r
+}\r
+\r
+/**\r
+ Reads a 32-bit MMIO register.\r
+\r
+ Reads the 32-bit MMIO register specified by Address. The 32-bit read value is\r
+ returned. This function must guarantee that all MMIO read and write\r
+ operations are serialized.\r
+\r
+ If 32-bit MMIO register operations are not supported, then ASSERT().\r
+\r
+ @param Address The MMIO register to read.\r
+\r
+ @return The value read.\r
+\r
+**/\r
+UINT32\r
+EFIAPI\r
+MmioRead32 (\r
+ IN UINTN Address\r
+ )\r
+{\r
+ UINT32 Value;\r
+\r
+ ASSERT ((Address & 3) == 0);\r
+ Value = *(volatile UINT32*)Address;\r
+ return Value;\r
+}\r
+\r
+/**\r
+ Writes a 32-bit MMIO register.\r
+\r
+ Writes the 32-bit MMIO register specified by Address with the value specified\r
+ by Value and returns Value. This function must guarantee that all MMIO read\r
+ and write operations are serialized.\r
+\r
+ If 32-bit MMIO register operations are not supported, then ASSERT().\r
+\r
+ @param Address The MMIO register to write.\r
+ @param Value The value to write to the MMIO register.\r
+\r
+**/\r
+UINT32\r
+EFIAPI\r
+MmioWrite32 (\r
+ IN UINTN Address,\r
+ IN UINT32 Value\r
+ )\r
+{\r
+ ASSERT ((Address & 3) == 0);\r
+ return *(volatile UINT32*)Address = Value;\r
+}\r
+\r
+/**\r
+ Reads a 64-bit MMIO register.\r
+\r
+ Reads the 64-bit MMIO register specified by Address. The 64-bit read value is\r
+ returned. This function must guarantee that all MMIO read and write\r
+ operations are serialized.\r
+\r
+ If 64-bit MMIO register operations are not supported, then ASSERT().\r
+\r
+ @param Address The MMIO register to read.\r
+\r
+ @return The value read.\r
+\r
+**/\r
+UINT64\r
+EFIAPI\r
+MmioRead64 (\r
+ IN UINTN Address\r
+ )\r
+{\r
+ UINT64 Value;\r
+\r
+ ASSERT ((Address & 7) == 0);\r
+ Value = *(volatile UINT64*)Address;\r
+ return Value;\r
+}\r
+\r
+/**\r
+ Writes a 64-bit MMIO register.\r
+\r
+ Writes the 64-bit MMIO register specified by Address with the value specified\r
+ by Value and returns Value. This function must guarantee that all MMIO read\r
+ and write operations are serialized.\r
+\r
+ If 64-bit MMIO register operations are not supported, then ASSERT().\r
+\r
+ @param Address The MMIO register to write.\r
+ @param Value The value to write to the MMIO register.\r
+\r
+**/\r
+UINT64\r
+EFIAPI\r
+MmioWrite64 (\r
+ IN UINTN Address,\r
+ IN UINT64 Value\r
+ )\r
+{\r
+ ASSERT ((Address & 7) == 0);\r
+ return *(volatile UINT64*)Address = Value;\r
}\r
\r
-#endif\r
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