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Update IoLib to add MemoryFence for x86 Mmio function.

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Correct IoLibGCC function comments.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7082 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
lgao4
2008-12-19 05:08:03 +00:00
parent ca08e40b90
commit 9de780dcd6
4 changed files with 255 additions and 723 deletions
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204
MdePkg/Library/BaseIoLibIntrinsic/IoLibIcc.c
View File

@@ -15,210 +15,6 @@
#include "BaseIoLibIntrinsicInternal.h"
/**
Reads an 8-bit MMIO register.
Reads the 8-bit MMIO register specified by Address. The 8-bit read value is
returned. This function must guarantee that all MMIO read and write
operations are serialized.
If 8-bit MMIO register operations are not supported, then ASSERT().
@param Address The MMIO register to read.
@return The value read.
**/
UINT8
EFIAPI
MmioRead8 (
IN UINTN Address
)
{
return *(volatile UINT8*)Address;
}
/**
Writes an 8-bit MMIO register.
Writes the 8-bit MMIO register specified by Address with the value specified
by Value and returns Value. This function must guarantee that all MMIO read
and write operations are serialized.
If 8-bit MMIO register operations are not supported, then ASSERT().
@param Address The MMIO register to write.
@param Value The value to write to the MMIO register.
@return Value.
**/
UINT8
EFIAPI
MmioWrite8 (
IN UINTN Address,
IN UINT8 Value
)
{
return *(volatile UINT8*)Address = Value;
}
/**
Reads a 16-bit MMIO register.
Reads the 16-bit MMIO register specified by Address. The 16-bit read value is
returned. This function must guarantee that all MMIO read and write
operations are serialized.
If 16-bit MMIO register operations are not supported, then ASSERT().
If Address is not aligned on a 16-bit boundary, then ASSERT().
@param Address The MMIO register to read.
@return The value read.
**/
UINT16
EFIAPI
MmioRead16 (
IN UINTN Address
)
{
ASSERT ((Address & 1) == 0);
return *(volatile UINT16*)Address;
}
/**
Writes a 16-bit MMIO register.
Writes the 16-bit MMIO register specified by Address with the value specified
by Value and returns Value. This function must guarantee that all MMIO read
and write operations are serialized.
If 16-bit MMIO register operations are not supported, then ASSERT().
If Address is not aligned on a 16-bit boundary, then ASSERT().
@param Address The MMIO register to write.
@param Value The value to write to the MMIO register.
@return Value.
**/
UINT16
EFIAPI
MmioWrite16 (
IN UINTN Address,
IN UINT16 Value
)
{
ASSERT ((Address & 1) == 0);
return *(volatile UINT16*)Address = Value;
}
/**
Reads a 32-bit MMIO register.
Reads the 32-bit MMIO register specified by Address. The 32-bit read value is
returned. This function must guarantee that all MMIO read and write
operations are serialized.
If 32-bit MMIO register operations are not supported, then ASSERT().
If Address is not aligned on a 32-bit boundary, then ASSERT().
@param Address The MMIO register to read.
@return The value read.
**/
UINT32
EFIAPI
MmioRead32 (
IN UINTN Address
)
{
ASSERT ((Address & 3) == 0);
return *(volatile UINT32*)Address;
}
/**
Writes a 32-bit MMIO register.
Writes the 32-bit MMIO register specified by Address with the value specified
by Value and returns Value. This function must guarantee that all MMIO read
and write operations are serialized.
If 32-bit MMIO register operations are not supported, then ASSERT().
If Address is not aligned on a 32-bit boundary, then ASSERT().
@param Address The MMIO register to write.
@param Value The value to write to the MMIO register.
@return Value.
**/
UINT32
EFIAPI
MmioWrite32 (
IN UINTN Address,
IN UINT32 Value
)
{
ASSERT ((Address & 3) == 0);
return *(volatile UINT32*)Address = Value;
}
/**
Reads a 64-bit MMIO register.
Reads the 64-bit MMIO register specified by Address. The 64-bit read value is
returned. This function must guarantee that all MMIO read and write
operations are serialized.
If 64-bit MMIO register operations are not supported, then ASSERT().
If Address is not aligned on a 64-bit boundary, then ASSERT().
@param Address The MMIO register to read.
@return The value read.
**/
UINT64
EFIAPI
MmioRead64 (
IN UINTN Address
)
{
ASSERT ((Address & 7) == 0);
return *(volatile UINT64*)Address;
}
/**
Writes a 64-bit MMIO register.
Writes the 64-bit MMIO register specified by Address with the value specified
by Value and returns Value. This function must guarantee that all MMIO read
and write operations are serialized.
If 64-bit MMIO register operations are not supported, then ASSERT().
If Address is not aligned on a 64-bit boundary, then ASSERT().
@param Address The MMIO register to write.
@param Value The value to write to the MMIO register.
**/
UINT64
EFIAPI
MmioWrite64 (
IN UINTN Address,
IN UINT64 Value
)
{
ASSERT ((Address & 7) == 0);
return *(volatile UINT64*)Address = Value;
}
/**
Reads an 8-bit I/O port.