+++ /dev/null
-/*++\r
-\r
-Copyright (c) 2004 - 2006, Intel Corporation. All rights reserved.<BR>\r
-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
-http://opensource.org/licenses/bsd-license.php \r
- \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
-\r
-Module Name:\r
-\r
- IoLibMsc.c\r
- \r
-Abstract: \r
-\r
- I/O Library. This file has compiler specifics for Microsft C as there is no\r
- ANSI C standard for doing IO.\r
-\r
- MSC - uses intrinsic functions and the optimize will remove the function call\r
- overhead.\r
-\r
- We don't advocate putting compiler specifics in libraries or drivers but there\r
- is no other way to make this work.\r
-\r
---*/\r
-\r
-#include "EdkIIGlueBase.h"\r
-\r
-#if _MSC_EXTENSIONS\r
-\r
-//\r
-// Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics\r
-//\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
-void _ReadWriteBarrier (void);\r
-\r
-#pragma intrinsic(_inp)\r
-#pragma intrinsic(_inpw)\r
-#pragma intrinsic(_inpd)\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
-\r
- Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned.\r
- This function must guarantee that all I/O read and write operations are\r
- serialized.\r
-\r
- If 8-bit I/O port operations are not supported, then ASSERT().\r
-\r
- @param Port The I/O port to read.\r
-\r
- @return The value read.\r
-\r
-**/\r
-UINT8\r
-EFIAPI\r
-GlueIoRead8 (\r
- IN UINTN Port\r
- )\r
-{\r
- UINT8 Value;\r
-\r
- _ReadWriteBarrier ();\r
- Value = (UINT8)_inp ((UINT16)Port);\r
- _ReadWriteBarrier ();\r
- return Value;\r
-}\r
-\r
-/**\r
- Writes an 8-bit I/O port.\r
-\r
- Writes the 8-bit I/O port specified by Port with the value specified by Value\r
- and returns Value. This function must guarantee that all I/O read and write\r
- operations are serialized.\r
-\r
- If 8-bit I/O port operations are not supported, then ASSERT().\r
-\r
- @param Port The I/O port to write.\r
- @param Value The value to write to the I/O port.\r
-\r
- @return The value written the I/O port.\r
-\r
-**/\r
-UINT8\r
-EFIAPI\r
-GlueIoWrite8 (\r
- IN UINTN Port,\r
- IN UINT8 Value\r
- )\r
-{\r
- _ReadWriteBarrier ();\r
- (UINT8)_outp ((UINT16)Port, Value);\r
- _ReadWriteBarrier ();\r
- return Value;\r
-}\r
-\r
-/**\r
- Reads a 16-bit I/O port.\r
-\r
- Reads the 16-bit I/O port specified by Port. The 16-bit read value is returned.\r
- This function must guarantee that all I/O read and write operations are\r
- serialized.\r
-\r
- If 16-bit I/O port operations are not supported, then ASSERT().\r
-\r
- @param Port The I/O port to read.\r
-\r
- @return The value read.\r
-\r
-**/\r
-UINT16\r
-EFIAPI\r
-GlueIoRead16 (\r
- IN UINTN Port\r
- )\r
-{\r
- UINT16 Value;\r
-\r
- ASSERT ((Port & 1) == 0);\r
- _ReadWriteBarrier ();\r
- Value = _inpw ((UINT16)Port);\r
- _ReadWriteBarrier ();\r
- return Value;\r
-}\r
-\r
-/**\r
- Writes a 16-bit I/O port.\r
-\r
- Writes the 16-bit I/O port specified by Port with the value specified by Value\r
- and returns Value. This function must guarantee that all I/O read and write\r
- operations are serialized.\r
-\r
- If 16-bit I/O port operations are not supported, then ASSERT().\r
-\r
- @param Port The I/O port to write.\r
- @param Value The value to write to the I/O port.\r
-\r
- @return The value written the I/O port.\r
-\r
-**/\r
-UINT16\r
-EFIAPI\r
-GlueIoWrite16 (\r
- IN UINTN Port,\r
- IN UINT16 Value\r
- )\r
-{\r
- ASSERT ((Port & 1) == 0);\r
- _ReadWriteBarrier ();\r
- _outpw ((UINT16)Port, Value);\r
- _ReadWriteBarrier ();\r
- return Value;\r
-}\r
-\r
-/**\r
- Reads a 32-bit I/O port.\r
-\r
- Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned.\r
- This function must guarantee that all I/O read and write operations are\r
- serialized.\r
-\r
- If 32-bit I/O port operations are not supported, then ASSERT().\r
-\r
- @param Port The I/O port to read.\r
-\r
- @return The value read.\r
-\r
-**/\r
-UINT32\r
-EFIAPI\r
-GlueIoRead32 (\r
- IN UINTN Port\r
- )\r
-{\r
- UINT32 Value;\r
-\r
- ASSERT ((Port & 3) == 0);\r
- _ReadWriteBarrier ();\r
- Value = _inpd ((UINT16)Port);\r
- _ReadWriteBarrier ();\r
- return Value;\r
-}\r
-\r
-/**\r
- Writes a 32-bit I/O port.\r
-\r
- Writes the 32-bit I/O port specified by Port with the value specified by Value\r
- and returns Value. This function must guarantee that all I/O read and write\r
- operations are serialized.\r
-\r
- If 32-bit I/O port operations are not supported, then ASSERT().\r
-\r
- @param Port The I/O port to write.\r
- @param Value The value to write to the I/O port.\r
-\r
- @return The value written the I/O port.\r
-\r
-**/\r
-UINT32\r
-EFIAPI\r
-GlueIoWrite32 (\r
- IN UINTN Port,\r
- IN UINT32 Value\r
- )\r
-{\r
- ASSERT ((Port & 3) == 0);\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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