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1. Added ReadWriteBarrier() before and after each I/O read/write function. 

2. Removed all ReadWriteBarrier() function calls in all MMIO functions.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1224 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
bxing 2006-08-09 06:38:30 +00:00
parent dd70a8c4e6
commit cea9bda05a
1 changed files with 46 additions and 24 deletions
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66
MdePkg/Library/BaseIoLibIntrinsic/IoLibMsc.c
View File

@ -71,8 +71,12 @@ IoRead8 (
IN UINTN Port
)
{
UINT8 Value;
_ReadWriteBarrier ();
return (UINT8)_inp ((UINT16)Port);
Value = (UINT8)_inp ((UINT16)Port);
_ReadWriteBarrier ();
return Value;
}
/**
@ -98,7 +102,9 @@ IoWrite8 (
)
{
_ReadWriteBarrier ();
return (UINT8)_outp ((UINT16)Port, Value);
(UINT8)_outp ((UINT16)Port, Value);
_ReadWriteBarrier ();
return Value;
}
/**
@ -121,9 +127,13 @@ IoRead16 (
IN UINTN Port
)
{
UINT16 Value;
ASSERT ((Port & 1) == 0);
_ReadWriteBarrier ();
return _inpw((UINT16)Port);
Value = _inpw ((UINT16)Port);
_ReadWriteBarrier ();
return Value;
}
/**
@ -150,7 +160,9 @@ IoWrite16 (
{
ASSERT ((Port & 1) == 0);
_ReadWriteBarrier ();
return _outpw ((UINT16)Port, Value);
_outpw ((UINT16)Port, Value);
_ReadWriteBarrier ();
return Value;
}
/**
@ -173,9 +185,13 @@ IoRead32 (
IN UINTN Port
)
{
UINT32 Value;
ASSERT ((Port & 3) == 0);
_ReadWriteBarrier ();
return _inpd((UINT16)Port);
Value = _inpd ((UINT16)Port);
_ReadWriteBarrier ();
return Value;
}
/**
@ -202,7 +218,9 @@ IoWrite32 (
{
ASSERT ((Port & 3) == 0);
_ReadWriteBarrier ();
return _outpd ((UINT16)Port, Value);
_outpd ((UINT16)Port, Value);
_ReadWriteBarrier ();
return Value;
}
@ -226,8 +244,10 @@ MmioRead8 (
IN UINTN Address
)
{
_ReadWriteBarrier ();
return *(volatile UINT8 *)Address;
UINT8 Value;
Value = *(volatile UINT8*)Address;
return Value;
}
/**
@ -250,8 +270,7 @@ MmioWrite8 (
IN UINT8 Value
)
{
_ReadWriteBarrier ();
return *(volatile UINT8 *)Address = Value;
return *(volatile UINT8*)Address = Value;
}
/**
@ -274,9 +293,11 @@ MmioRead16 (
IN UINTN Address
)
{
UINT16 Value;
ASSERT ((Address & 1) == 0);
_ReadWriteBarrier ();
return *(volatile UINT16 *)Address;
Value = *(volatile UINT16*)Address;
return Value;
}
/**
@ -300,8 +321,7 @@ MmioWrite16 (
)
{
ASSERT ((Address & 1) == 0);
_ReadWriteBarrier ();
return *(volatile UINT16 *)Address = Value;
return *(volatile UINT16*)Address = Value;
}
/**
@ -324,9 +344,11 @@ MmioRead32 (
IN UINTN Address
)
{
UINT32 Value;
ASSERT ((Address & 3) == 0);
_ReadWriteBarrier ();
return *(volatile UINT32 *)Address;
Value = *(volatile UINT32*)Address;
return Value;
}
/**
@ -350,8 +372,7 @@ MmioWrite32 (
)
{
ASSERT ((Address & 3) == 0);
_ReadWriteBarrier ();
return *(volatile UINT32 *)Address = Value;
return *(volatile UINT32*)Address = Value;
}
/**
@ -374,9 +395,11 @@ MmioRead64 (
IN UINTN Address
)
{
UINT64 Value;
ASSERT ((Address & 7) == 0);
_ReadWriteBarrier ();
return *(volatile UINT64 *)Address;
Value = *(volatile UINT64*)Address;
return Value;
}
/**
@ -400,8 +423,7 @@ MmioWrite64 (
)
{
ASSERT ((Address & 7) == 0);
_ReadWriteBarrier ();
return *(volatile UINT64 *)Address = Value;
return *(volatile UINT64*)Address = Value;
}
#endif