mirror of https://github.com/acidanthera/audk.git
536 lines
12 KiB
C
536 lines
12 KiB
C
/** @file
|
|
Common I/O Library routines.
|
|
|
|
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
|
|
This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
**/
|
|
|
|
|
|
#include "BaseIoLibIntrinsicInternal.h"
|
|
#include <Library/PcdLib.h>
|
|
|
|
#define MAP_PORT_BASE_TO_MEM(_Port) \
|
|
((((_Port) & 0xfffc) << 10) | ((_Port) & 0x0fff))
|
|
|
|
/**
|
|
Translates I/O port address to memory address.
|
|
|
|
This function translates I/O port address to memory address by adding the 64MB
|
|
aligned I/O Port space to the I/O address.
|
|
If I/O Port space base is not 64MB aligned, then ASSERT ().
|
|
|
|
@param Port The I/O port to read.
|
|
|
|
@return The memory address.
|
|
|
|
**/
|
|
UINTN
|
|
InternalGetMemoryMapAddress (
|
|
IN UINTN Port
|
|
)
|
|
{
|
|
UINTN Address;
|
|
UINTN IoBlockBaseAddress;
|
|
|
|
Address = MAP_PORT_BASE_TO_MEM (Port);
|
|
IoBlockBaseAddress = PcdGet64(PcdIoBlockBaseAddressForIpf);
|
|
|
|
//
|
|
// Make sure that the I/O Port space base is 64MB aligned.
|
|
//
|
|
ASSERT ((IoBlockBaseAddress & 0x3ffffff) == 0);
|
|
Address += IoBlockBaseAddress;
|
|
|
|
return Address;
|
|
}
|
|
|
|
/**
|
|
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 MmioRead8 (InternalGetMemoryMapAddress (Port));
|
|
}
|
|
|
|
/**
|
|
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 16-bit I/O port operations are not supported, then ASSERT().
|
|
If Port is not aligned on a 16-bit boundary, then ASSERT().
|
|
|
|
@param Port The I/O port to read.
|
|
|
|
@return The value read.
|
|
|
|
**/
|
|
UINT16
|
|
EFIAPI
|
|
IoRead16 (
|
|
IN UINTN Port
|
|
)
|
|
{
|
|
return MmioRead16 (InternalGetMemoryMapAddress (Port));
|
|
}
|
|
|
|
/**
|
|
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 32-bit I/O port operations are not supported, then ASSERT().
|
|
If Port is not aligned on a 32-bit boundary, then ASSERT().
|
|
|
|
@param Port The I/O port to read.
|
|
|
|
@return The value read.
|
|
|
|
**/
|
|
UINT32
|
|
EFIAPI
|
|
IoRead32 (
|
|
IN UINTN Port
|
|
)
|
|
{
|
|
return MmioRead32 (InternalGetMemoryMapAddress (Port));
|
|
}
|
|
|
|
/**
|
|
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 64-bit I/O port operations are not supported, then ASSERT().
|
|
If Port is not aligned on a 64-bit boundary, then ASSERT().
|
|
|
|
@param Port The I/O port to read.
|
|
|
|
@return The value read.
|
|
|
|
**/
|
|
UINT64
|
|
EFIAPI
|
|
IoRead64 (
|
|
IN UINTN Port
|
|
)
|
|
{
|
|
ASSERT (FALSE);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
Writes an 8-bit I/O port.
|
|
|
|
Writes the 8-bit I/O port specified by Port with the value specified by Value
|
|
and returns Value. 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 write.
|
|
@param Value The value to write to the I/O port.
|
|
|
|
@return The value written the I/O port.
|
|
|
|
**/
|
|
UINT8
|
|
EFIAPI
|
|
IoWrite8 (
|
|
IN UINTN Port,
|
|
IN UINT8 Value
|
|
)
|
|
{
|
|
return MmioWrite8 (InternalGetMemoryMapAddress (Port), Value);
|
|
}
|
|
|
|
/**
|
|
Writes a 16-bit I/O port.
|
|
|
|
Writes the 16-bit I/O port specified by Port with the value specified by Value
|
|
and returns Value. This function must guarantee that all I/O read and write
|
|
operations are serialized.
|
|
|
|
If 16-bit I/O port operations are not supported, then ASSERT().
|
|
If Port is not aligned on a 16-bit boundary, then ASSERT().
|
|
|
|
@param Port The I/O port to write.
|
|
@param Value The value to write to the I/O port.
|
|
|
|
@return The value written the I/O port.
|
|
|
|
**/
|
|
UINT16
|
|
EFIAPI
|
|
IoWrite16 (
|
|
IN UINTN Port,
|
|
IN UINT16 Value
|
|
)
|
|
{
|
|
return MmioWrite16 (InternalGetMemoryMapAddress (Port), Value);
|
|
}
|
|
|
|
/**
|
|
Writes a 32-bit I/O port.
|
|
|
|
Writes the 32-bit I/O port specified by Port with the value specified by Value
|
|
and returns Value. This function must guarantee that all I/O read and write
|
|
operations are serialized.
|
|
|
|
If 32-bit I/O port operations are not supported, then ASSERT().
|
|
If Port is not aligned on a 32-bit boundary, then ASSERT().
|
|
|
|
@param Port The I/O port to write.
|
|
@param Value The value to write to the I/O port.
|
|
|
|
@return The value written the I/O port.
|
|
|
|
**/
|
|
UINT32
|
|
EFIAPI
|
|
IoWrite32 (
|
|
IN UINTN Port,
|
|
IN UINT32 Value
|
|
)
|
|
{
|
|
return MmioWrite32 (InternalGetMemoryMapAddress (Port), Value);
|
|
}
|
|
|
|
/**
|
|
Writes a 64-bit I/O port.
|
|
|
|
Writes the 64-bit I/O port specified by Port with the value specified by Value
|
|
and returns Value. This function must guarantee that all I/O read and write
|
|
operations are serialized.
|
|
|
|
If 64-bit I/O port operations are not supported, then ASSERT().
|
|
If Port is not aligned on a 64-bit boundary, then ASSERT().
|
|
|
|
@param Port The I/O port to write.
|
|
@param Value The value to write to the I/O port.
|
|
|
|
@return The value written the I/O port.
|
|
|
|
**/
|
|
UINT64
|
|
EFIAPI
|
|
IoWrite64 (
|
|
IN UINTN Port,
|
|
IN UINT64 Value
|
|
)
|
|
{
|
|
ASSERT (FALSE);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
UINT8 Data;
|
|
|
|
Address |= BIT63;
|
|
|
|
MemoryFence ();
|
|
Data = *((volatile UINT8 *) Address);
|
|
MemoryFence ();
|
|
|
|
return Data;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
UINT16 Data;
|
|
|
|
//
|
|
// Make sure that Address is 16-bit aligned.
|
|
//
|
|
ASSERT ((Address & 1) == 0);
|
|
|
|
Address |= BIT63;
|
|
|
|
MemoryFence ();
|
|
Data = *((volatile UINT16 *) Address);
|
|
MemoryFence ();
|
|
|
|
return Data;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
UINT32 Data;
|
|
|
|
//
|
|
// Make sure that Address is 32-bit aligned.
|
|
//
|
|
ASSERT ((Address & 3) == 0);
|
|
|
|
Address |= BIT63;
|
|
|
|
MemoryFence ();
|
|
Data = *((volatile UINT32 *) Address);
|
|
MemoryFence ();
|
|
|
|
return Data;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
UINT64 Data;
|
|
|
|
//
|
|
// Make sure that Address is 64-bit aligned.
|
|
//
|
|
ASSERT ((Address & 7) == 0);
|
|
|
|
Address |= BIT63;
|
|
|
|
MemoryFence ();
|
|
Data = *((volatile UINT64 *) Address);
|
|
MemoryFence ();
|
|
|
|
return Data;
|
|
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
Address |= BIT63;
|
|
|
|
MemoryFence ();
|
|
*((volatile UINT8 *) Address) = Value;
|
|
MemoryFence ();
|
|
|
|
return Value;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
//
|
|
// Make sure that Address is 16-bit aligned.
|
|
//
|
|
ASSERT ((Address & 1) == 0);
|
|
|
|
Address |= BIT63;
|
|
|
|
MemoryFence ();
|
|
*((volatile UINT16 *) Address) = Value;
|
|
MemoryFence ();
|
|
|
|
return Value;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
//
|
|
// Make sure that Address is 32-bit aligned.
|
|
//
|
|
ASSERT ((Address & 3) == 0);
|
|
|
|
Address |= BIT63;
|
|
|
|
MemoryFence ();
|
|
*((volatile UINT32 *) Address) = Value;
|
|
MemoryFence ();
|
|
|
|
return Value;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
//
|
|
// Make sure that Address is 64-bit aligned.
|
|
//
|
|
ASSERT ((Address & 7) == 0);
|
|
|
|
Address |= BIT63;
|
|
|
|
MemoryFence ();
|
|
*((volatile UINT64 *) Address) = Value;
|
|
MemoryFence ();
|
|
|
|
return Value;
|
|
}
|