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 - 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
- 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
+ Copyright (c) 2006 - 2021, Intel Corporation. All rights reserved.<BR>\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
-\r
#include "BaseIoLibIntrinsicInternal.h"\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
- return *(volatile UINT8*)Address;\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
- @return Value.\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
- If Address is not aligned on a 16-bit boundary, 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
- ASSERT ((Address & 1) == 0);\r
- return *(volatile UINT16*)Address;\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
- If Address is not aligned on a 16-bit boundary, then ASSERT().\r
-\r
- @param Address The MMIO register to write.\r
- @param Value The value to write to the MMIO register.\r
- \r
- @return Value.\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
- If Address is not aligned on a 32-bit boundary, 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
- ASSERT ((Address & 3) == 0);\r
- return *(volatile UINT32*)Address;\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
- If Address is not aligned on a 32-bit boundary, then ASSERT().\r
-\r
- @param Address The MMIO register to write.\r
- @param Value The value to write to the MMIO register.\r
- \r
- @return Value.\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
- If Address is not aligned on a 64-bit boundary, 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
- ASSERT ((Address & 7) == 0);\r
- return *(volatile UINT64*)Address;\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
- If Address is not aligned on a 64-bit boundary, 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
-\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 from Port.\r
-\r
-**/\r
-__inline__\r
/**\r
Reads an 8-bit I/O port.\r
\r
UINT8\r
EFIAPI\r
IoRead8 (\r
- IN UINTN Port\r
+ IN UINTN Port\r
)\r
{\r
- UINT8 Data;\r
+ UINT8 Data;\r
+ BOOLEAN Flag;\r
\r
- __asm__ __volatile__ ("inb %w1,%b0" : "=a" (Data) : "d" ((UINT16)Port));\r
- return Data;\r
-}\r
+ Flag = FilterBeforeIoRead (FilterWidth8, Port, &Data);\r
+ if (Flag) {\r
+ __asm__ __volatile__ ("inb %w1,%b0" : "=a" (Data) : "d" ((UINT16)Port));\r
+ }\r
\r
-/**\r
- Writes an 8-bit I/O port.\r
+ FilterAfterIoRead (FilterWidth8, Port, &Data);\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 to the I/O port. It equals to the\r
- input Value instead of the actual value read back from\r
- the I/O port.\r
+ return Data;\r
+}\r
\r
-**/\r
-__inline__\r
/**\r
Writes an 8-bit I/O port.\r
\r
UINT8\r
EFIAPI\r
IoWrite8 (\r
- IN UINTN Port,\r
- IN UINT8 Value\r
+ IN UINTN Port,\r
+ IN UINT8 Value\r
)\r
{\r
- __asm__ __volatile__ ("outb %b0,%w1" : : "a" (Value), "d" ((UINT16)Port));\r
- return Value;;\r
-}\r
+ BOOLEAN Flag;\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
+ Flag = FilterBeforeIoWrite (FilterWidth8, Port, &Value);\r
+ if (Flag) {\r
+ __asm__ __volatile__ ("outb %b0,%w1" : : "a" (Value), "d" ((UINT16)Port));\r
+ }\r
\r
- @param Port The I/O port to read.\r
+ FilterAfterIoWrite (FilterWidth8, Port, &Value);\r
\r
- @return The value read from Port.\r
+ return Value;\r
+}\r
\r
-**/\r
-__inline__\r
/**\r
Reads a 16-bit I/O port.\r
\r
UINT16\r
EFIAPI\r
IoRead16 (\r
- IN UINTN Port\r
+ IN UINTN Port\r
)\r
{\r
UINT16 Data;\r
+ BOOLEAN Flag;\r
\r
ASSERT ((Port & 1) == 0);\r
- __asm__ __volatile__ ("inw %w1,%w0" : "=a" (Data) : "d" ((UINT16)Port));\r
- return Data;\r
-}\r
\r
-/**\r
- Writes a 16-bit I/O port.\r
+ Flag = FilterBeforeIoRead (FilterWidth16, Port, &Data);\r
+ if (Flag) {\r
+ __asm__ __volatile__ ("inw %w1,%w0" : "=a" (Data) : "d" ((UINT16)Port));\r
+ }\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
+ FilterAfterIoRead (FilterWidth16, Port, &Data);\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 to the I/O port. It equals to the\r
- input Value instead of the actual value read back from\r
- the I/O port.\r
+ return Data;\r
+}\r
\r
-**/\r
-__inline__\r
/**\r
Writes a 16-bit I/O port.\r
\r
\r
If 16-bit I/O port operations are not supported, then ASSERT().\r
If Port is not aligned on a 16-bit boundary, then ASSERT().\r
- \r
+\r
@param Port The I/O port to write.\r
@param Value The value to write to the I/O port.\r
\r
UINT16\r
EFIAPI\r
IoWrite16 (\r
- IN UINTN Port,\r
- IN UINT16 Value\r
+ IN UINTN Port,\r
+ IN UINT16 Value\r
)\r
{\r
- ASSERT ((Port & 1) == 0);\r
- __asm__ __volatile__ ("outw %w0,%w1" : : "a" (Value), "d" ((UINT16)Port));\r
- return Value;;\r
-}\r
-\r
-/**\r
- Reads a 32-bit I/O port.\r
+ BOOLEAN Flag;\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
+ ASSERT ((Port & 1) == 0);\r
\r
- If 32-bit I/O port operations are not supported, then ASSERT().\r
+ Flag = FilterBeforeIoWrite (FilterWidth16, Port, &Value);\r
+ if (Flag) {\r
+ __asm__ __volatile__ ("outw %w0,%w1" : : "a" (Value), "d" ((UINT16)Port));\r
+ }\r
\r
- @param Port The I/O port to read.\r
+ FilterAfterIoWrite (FilterWidth16, Port, &Value);\r
\r
- @return The value read from Port.\r
+ return Value;\r
+}\r
\r
-**/\r
-__inline__\r
/**\r
Reads a 32-bit I/O port.\r
\r
\r
If 32-bit I/O port operations are not supported, then ASSERT().\r
If Port is not aligned on a 32-bit boundary, then ASSERT().\r
- \r
+\r
@param Port The I/O port to read.\r
\r
@return The value read.\r
UINT32\r
EFIAPI\r
IoRead32 (\r
- IN UINTN Port\r
+ IN UINTN Port\r
)\r
{\r
UINT32 Data;\r
+ BOOLEAN Flag;\r
\r
ASSERT ((Port & 3) == 0);\r
- __asm__ __volatile__ ("inl %w1,%0" : "=a" (Data) : "d" ((UINT16)Port));\r
- return Data;\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
+ Flag = FilterBeforeIoRead (FilterWidth32, Port, &Data);\r
+ if (Flag) {\r
+ __asm__ __volatile__ ("inl %w1,%0" : "=a" (Data) : "d" ((UINT16)Port));\r
+ }\r
\r
- If 32-bit I/O port operations are not supported, then ASSERT().\r
+ FilterAfterIoRead (FilterWidth32, Port, &Data);\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 to the I/O port. It equals to the\r
- input Value instead of the actual value read back from\r
- the I/O port.\r
+ return Data;\r
+}\r
\r
-**/\r
-__inline__\r
/**\r
Writes a 32-bit I/O port.\r
\r
\r
If 32-bit I/O port operations are not supported, then ASSERT().\r
If Port is not aligned on a 32-bit boundary, then ASSERT().\r
- \r
+\r
@param Port The I/O port to write.\r
@param Value The value to write to the I/O port.\r
\r
UINT32\r
EFIAPI\r
IoWrite32 (\r
- IN UINTN Port,\r
- IN UINT32 Value\r
+ IN UINTN Port,\r
+ IN UINT32 Value\r
)\r
{\r
+ BOOLEAN Flag;\r
+\r
ASSERT ((Port & 3) == 0);\r
- __asm__ __volatile__ ("outl %0,%w1" : : "a" (Value), "d" ((UINT16)Port));\r
+\r
+ Flag = FilterBeforeIoWrite (FilterWidth32, Port, &Value);\r
+ if (Flag) {\r
+ __asm__ __volatile__ ("outl %0,%w1" : : "a" (Value), "d" ((UINT16)Port));\r
+ }\r
+\r
+ FilterAfterIoWrite (FilterWidth32, Port, &Value);\r
+\r
return Value;\r
}\r
-\r
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