/**
Reads an 8-bit I/O port.
Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned.
This function must guarantee that all I/O read and write operations are
serialized.
If 8-bit I/O port operations are not supported, then ASSERT().
@param Port The I/O port to read.
@return The value read.
**/
UINT8
EFIAPI
IoRead8 (
IN UINTN Port
)
{
return (UINT8)IoReadWorker (Port, EfiCpuIoWidthUint8);
}
/**
Reads an 8-bit I/O port.
Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned.
This function must guarantee that all I/O read and write operations are
serialized.
If 8-bit I/O port operations are not supported, then ASSERT().
@param Port The I/O port to read.
@return The value read.
**/
UINT8
EFIAPI
IoRead8 (
IN UINTN Port
)
{
return (UINT8)IoReadWorker (Port, SMM_IO_UINT8);
}
/**
Reads a 64-bit I/O port.
Reads the 64-bit I/O port specified by Port. The 64-bit read value is returned.
This function must guarantee that all I/O read and write operations are
serialized.
If Port is not aligned on a 64-bit boundary, then ASSERT().
If 64-bit I/O port operations are not supported, then ASSERT().
@param Port The I/O port to read.
@return The value read.
**/
UINT64
EFIAPI
IoRead64 (
IN UINTN Port
)
{
//
// Make sure Port is aligned on a 64-bit boundary.
//
ASSERT ((Port & 7) == 0);
return IoReadWorker (Port, EfiCpuIoWidthUint64);
}
/**
Reads a 32-bit I/O port.
Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned.
This function must guarantee that all I/O read and write operations are
serialized.
If Port is not aligned on a 32-bit boundary, then ASSERT().
If 32-bit I/O port operations are not supported, then ASSERT().
@param Port The I/O port to read.
@return The value read.
**/
UINT32
EFIAPI
IoRead32 (
IN UINTN Port
)
{
//
// Make sure Port is aligned on a 32-bit boundary.
//
ASSERT ((Port & 3) == 0);
return (UINT32)IoReadWorker (Port, EfiCpuIoWidthUint32);
}
/**
Reads a 16-bit I/O port.
Reads the 16-bit I/O port specified by Port. The 16-bit read value is returned.
This function must guarantee that all I/O read and write operations are
serialized.
If Port is not aligned on a 16-bit boundary, then ASSERT().
If 16-bit I/O port operations are not supported, then ASSERT().
@param Port The I/O port to read.
@return The value read.
**/
UINT16
EFIAPI
IoRead16 (
IN UINTN Port
)
{
//
// Make sure Port is aligned on a 16-bit boundary.
//
ASSERT ((Port & 1) == 0);
return (UINT16)IoReadWorker (Port, EfiCpuIoWidthUint16);
}
/**
Reads a 64-bit I/O port.
Reads the 64-bit I/O port specified by Port. The 64-bit read value is returned.
This function must guarantee that all I/O read and write operations are
serialized.
If Port is not aligned on a 64-bit boundary, then ASSERT().
If 64-bit I/O port operations are not supported, then ASSERT().
@param Port The I/O port to read.
@return The value read.
**/
UINT64
EFIAPI
IoRead64 (
IN UINTN Port
)
{
//
// Make sure Port is aligned on a 64-bit boundary.
//
ASSERT ((Port & 7) == 0);
return IoReadWorker (Port, SMM_IO_UINT64);
}
