[mirror_edk2.git] / MdePkg / Include / Library / IoLib.h

/** @file\r
  Provide services to access I/O Ports and MMIO registers.\r
\r
Copyright (c) 2006 - 2008, 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
\r
**/\r
\r
#ifndef __IO_LIB_H__\r
#define __IO_LIB_H__\r
\r
/**\r
  Macro that converts PCI Segment and I/O Port to an address that can be\r
  passed to the I/O Library functions.\r
  \r
  Computes an address that is compatible with the I/O Library functions.  \r
  The unused upper bits of Segment, and Port are stripped prior to the \r
  generation of the address.\r
  \r
  @param  Segment   PCI Segment number.  Range 0..65535.\r
  @param  Port      I/O Port number.  Range 0..65535.\r
  \r
  @return An address that the I/o Library functions need.\r
\r
**/\r
\r
#define IO_LIB_ADDRESS(Segment,Port) \\r
  ( ((Port) & 0xffff) | (((Segment) & 0xffff) << 16) )\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.\r
\r
**/\r
UINT8\r
EFIAPI\r
IoRead8 (\r
  IN      UINTN                     Port\r
  );\r
\r
/**\r
  Writes an 8-bit I/O port.\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 the I/O port.\r
\r
**/\r
UINT8\r
EFIAPI\r
IoWrite8 (\r
  IN      UINTN                     Port,\r
  IN      UINT8                     Value\r
  );\r
\r
/**\r
  Reads an 8-bit I/O port, performs a bitwise inclusive OR, and writes the\r
  result back to the 8-bit I/O port.\r
\r
  Reads the 8-bit I/O port specified by Port, performs a bitwise inclusive OR\r
  between the read result and the value specified by OrData, and writes the\r
  result to the 8-bit I/O port specified by Port. The value written to the I/O\r
  port is returned. 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  OrData  The value to OR with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT8\r
EFIAPI\r
IoOr8 (\r
  IN      UINTN                     Port,\r
  IN      UINT8                     OrData\r
  );\r
\r
/**\r
  Reads an 8-bit I/O port, performs a bitwise AND, and writes the result back\r
  to the 8-bit I/O port.\r
\r
  Reads the 8-bit I/O port specified by Port, performs a bitwise AND between\r
  the read result and the value specified by AndData, and writes the result to\r
  the 8-bit I/O port specified by Port. The value written to the I/O port is\r
  returned. This function must guarantee that all I/O read and write operations\r
  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  AndData The value to AND with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT8\r
EFIAPI\r
IoAnd8 (\r
  IN      UINTN                     Port,\r
  IN      UINT8                     AndData\r
  );\r
\r
/**\r
  Reads an 8-bit I/O port, performs a bitwise AND followed by a bitwise\r
  inclusive OR, and writes the result back to the 8-bit I/O port.\r
\r
  Reads the 8-bit I/O port specified by Port, performs a bitwise AND between\r
  the read result and the value specified by AndData, performs a bitwise OR\r
  between the result of the AND operation and the value specified by OrData,\r
  and writes the result to the 8-bit I/O port specified by Port. The value\r
  written to the I/O port is returned. This function must guarantee that all\r
  I/O read and write 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  AndData The value to AND with the read value from the I/O port.\r
  @param  OrData  The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT8\r
EFIAPI\r
IoAndThenOr8 (\r
  IN      UINTN                     Port,\r
  IN      UINT8                     AndData,\r
  IN      UINT8                     OrData\r
  );\r
\r
/**\r
  Reads a bit field of an I/O register.\r
\r
  Reads the bit field in an 8-bit I/O register. The bit field is specified by\r
  the StartBit and the EndBit. The value of the bit field is returned.\r
\r
  If 8-bit I/O port operations are not supported, then ASSERT().\r
  If StartBit is greater than 7, then ASSERT().\r
  If EndBit is greater than 7, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to read.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..7.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..7.\r
\r
  @return The value read.\r
\r
**/\r
UINT8\r
EFIAPI\r
IoBitFieldRead8 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit\r
  );\r
\r
/**\r
  Writes a bit field to an I/O register.\r
\r
  Writes Value to the bit field of the I/O register. The bit field is specified\r
  by the StartBit and the EndBit. All other bits in the destination I/O\r
  register are preserved. The value written to the I/O port is returned. Extra\r
  left bits in Value are stripped.\r
\r
  If 8-bit I/O port operations are not supported, then ASSERT().\r
  If StartBit is greater than 7, then ASSERT().\r
  If EndBit is greater than 7, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..7.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..7.\r
  @param  Value     New value of the bit field.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT8\r
EFIAPI\r
IoBitFieldWrite8 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT8                     Value\r
  );\r
\r
/**\r
  Reads a bit field in an 8-bit port, performs a bitwise OR, and writes the\r
  result back to the bit field in the 8-bit port.\r
\r
  Reads the 8-bit I/O port specified by Port, performs a bitwise inclusive OR\r
  between the read result and the value specified by OrData, and writes the\r
  result to the 8-bit I/O port specified by Port. The value written to the I/O\r
  port is returned. This function must guarantee that all I/O read and write\r
  operations are serialized. Extra left bits in OrData are stripped.\r
\r
  If 8-bit I/O port operations are not supported, then ASSERT().\r
  If StartBit is greater than 7, then ASSERT().\r
  If EndBit is greater than 7, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..7.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..7.\r
  @param  OrData    The value to OR with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT8\r
EFIAPI\r
IoBitFieldOr8 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT8                     OrData\r
  );\r
\r
/**\r
  Reads a bit field in an 8-bit port, performs a bitwise AND, and writes the\r
  result back to the bit field in the 8-bit port.\r
\r
  Reads the 8-bit I/O port specified by Port, performs a bitwise AND between\r
  the read result and the value specified by AndData, and writes the result to\r
  the 8-bit I/O port specified by Port. The value written to the I/O port is\r
  returned. This function must guarantee that all I/O read and write operations\r
  are serialized. Extra left bits in AndData are stripped.\r
\r
  If 8-bit I/O port operations are not supported, then ASSERT().\r
  If StartBit is greater than 7, then ASSERT().\r
  If EndBit is greater than 7, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..7.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..7.\r
  @param  AndData   The value to AND with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT8\r
EFIAPI\r
IoBitFieldAnd8 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT8                     AndData\r
  );\r
\r
/**\r
  Reads a bit field in an 8-bit port, performs a bitwise AND followed by a\r
  bitwise inclusive OR, and writes the result back to the bit field in the\r
  8-bit port.\r
\r
  Reads the 8-bit I/O port specified by Port, performs a bitwise AND followed\r
  by a bitwise inclusive OR between the read result and the value specified by\r
  AndData, and writes the result to the 8-bit I/O port specified by Port. The\r
  value written to the I/O port is returned. This function must guarantee that\r
  all I/O read and write operations are serialized. Extra left bits in both\r
  AndData and OrData are stripped.\r
\r
  If 8-bit I/O port operations are not supported, then ASSERT().\r
  If StartBit is greater than 7, then ASSERT().\r
  If EndBit is greater than 7, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..7.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..7.\r
  @param  AndData   The value to AND with the read value from the I/O port.\r
  @param  OrData    The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT8\r
EFIAPI\r
IoBitFieldAndThenOr8 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT8                     AndData,\r
  IN      UINT8                     OrData\r
  );\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
  If Port is not aligned on a 16-bit boundary, then ASSERT().\r
\r
  @param  Port  The I/O port to read.\r
\r
  @return The value read.\r
\r
**/\r
UINT16\r
EFIAPI\r
IoRead16 (\r
  IN      UINTN                     Port\r
  );\r
\r
/**\r
  Writes a 16-bit I/O port.\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
\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
  @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 the I/O port.\r
\r
**/\r
UINT16\r
EFIAPI\r
IoWrite16 (\r
  IN      UINTN                     Port,\r
  IN      UINT16                    Value\r
  );\r
\r
/**\r
  Reads a 16-bit I/O port, performs a bitwise inclusive OR, and writes the\r
  result back to the 16-bit I/O port.\r
\r
  Reads the 16-bit I/O port specified by Port, performs a bitwise inclusive OR\r
  between the read result and the value specified by OrData, and writes the\r
  result to the 16-bit I/O port specified by Port. The value written to the I/O\r
  port is returned. This function must guarantee that all I/O read and write\r
  operations are serialized.\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
  @param  Port    The I/O port to write.\r
  @param  OrData  The value to OR with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT16\r
EFIAPI\r
IoOr16 (\r
  IN      UINTN                     Port,\r
  IN      UINT16                    OrData\r
  );\r
\r
/**\r
  Reads a 16-bit I/O port, performs a bitwise AND, and writes the result back\r
  to the 16-bit I/O port.\r
\r
  Reads the 16-bit I/O port specified by Port, performs a bitwise AND between\r
  the read result and the value specified by AndData, and writes the result to\r
  the 16-bit I/O port specified by Port. The value written to the I/O port is\r
  returned. This function must guarantee that all I/O read and write operations\r
  are serialized.\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
  @param  Port    The I/O port to write.\r
  @param  AndData The value to AND with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT16\r
EFIAPI\r
IoAnd16 (\r
  IN      UINTN                     Port,\r
  IN      UINT16                    AndData\r
  );\r
\r
/**\r
  Reads a 16-bit I/O port, performs a bitwise AND followed by a bitwise\r
  inclusive OR, and writes the result back to the 16-bit I/O port.\r
\r
  Reads the 16-bit I/O port specified by Port, performs a bitwise AND between\r
  the read result and the value specified by AndData, performs a bitwise OR\r
  between the result of the AND operation and the value specified by OrData,\r
  and writes the result to the 16-bit I/O port specified by Port. The value\r
  written to the I/O port is returned. This function must guarantee that all\r
  I/O read and write operations are serialized.\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
  @param  Port    The I/O port to write.\r
  @param  AndData The value to AND with the read value from the I/O port.\r
  @param  OrData  The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT16\r
EFIAPI\r
IoAndThenOr16 (\r
  IN      UINTN                     Port,\r
  IN      UINT16                    AndData,\r
  IN      UINT16                    OrData\r
  );\r
\r
/**\r
  Reads a bit field of an I/O register.\r
\r
  Reads the bit field in a 16-bit I/O register. The bit field is specified by\r
  the StartBit and the EndBit. The value of the bit field is returned.\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
  If StartBit is greater than 15, then ASSERT().\r
  If EndBit is greater than 15, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to read.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..15.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..15.\r
\r
  @return The value read.\r
\r
**/\r
UINT16\r
EFIAPI\r
IoBitFieldRead16 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit\r
  );\r
\r
/**\r
  Writes a bit field to an I/O register.\r
\r
  Writes Value to the bit field of the I/O register. The bit field is specified\r
  by the StartBit and the EndBit. All other bits in the destination I/O\r
  register are preserved. The value written to the I/O port is returned. Extra\r
  left bits in Value are stripped.\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
  If StartBit is greater than 15, then ASSERT().\r
  If EndBit is greater than 15, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..15.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..15.\r
  @param  Value     New value of the bit field.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT16\r
EFIAPI\r
IoBitFieldWrite16 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT16                    Value\r
  );\r
\r
/**\r
  Reads a bit field in a 16-bit port, performs a bitwise OR, and writes the\r
  result back to the bit field in the 16-bit port.\r
\r
  Reads the 16-bit I/O port specified by Port, performs a bitwise inclusive OR\r
  between the read result and the value specified by OrData, and writes the\r
  result to the 16-bit I/O port specified by Port. The value written to the I/O\r
  port is returned. This function must guarantee that all I/O read and write\r
  operations are serialized. Extra left bits in OrData are stripped.\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
  If StartBit is greater than 15, then ASSERT().\r
  If EndBit is greater than 15, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..15.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..15.\r
  @param  OrData    The value to OR with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT16\r
EFIAPI\r
IoBitFieldOr16 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT16                    OrData\r
  );\r
\r
/**\r
  Reads a bit field in a 16-bit port, performs a bitwise AND, and writes the\r
  result back to the bit field in the 16-bit port.\r
\r
  Reads the 16-bit I/O port specified by Port, performs a bitwise AND between\r
  the read result and the value specified by AndData, and writes the result to\r
  the 16-bit I/O port specified by Port. The value written to the I/O port is\r
  returned. This function must guarantee that all I/O read and write operations\r
  are serialized. Extra left bits in AndData are stripped.\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
  If StartBit is greater than 15, then ASSERT().\r
  If EndBit is greater than 15, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..15.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..15.\r
  @param  AndData   The value to AND with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT16\r
EFIAPI\r
IoBitFieldAnd16 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT16                    AndData\r
  );\r
\r
/**\r
  Reads a bit field in a 16-bit port, performs a bitwise AND followed by a\r
  bitwise inclusive OR, and writes the result back to the bit field in the\r
  16-bit port.\r
\r
  Reads the 16-bit I/O port specified by Port, performs a bitwise AND followed\r
  by a bitwise inclusive OR between the read result and the value specified by\r
  AndData, and writes the result to the 16-bit I/O port specified by Port. The\r
  value written to the I/O port is returned. This function must guarantee that\r
  all I/O read and write operations are serialized. Extra left bits in both\r
  AndData and OrData are stripped.\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
  If StartBit is greater than 15, then ASSERT().\r
  If EndBit is greater than 15, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..15.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..15.\r
  @param  AndData   The value to AND with the read value from the I/O port.\r
  @param  OrData    The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT16\r
EFIAPI\r
IoBitFieldAndThenOr16 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT16                    AndData,\r
  IN      UINT16                    OrData\r
  );\r
\r
/**\r
  Reads a 32-bit I/O port.\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
\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
  @param  Port  The I/O port to read.\r
\r
  @return The value read.\r
\r
**/\r
UINT32\r
EFIAPI\r
IoRead32 (\r
  IN      UINTN                     Port\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
\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
  @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 the I/O port.\r
\r
**/\r
UINT32\r
EFIAPI\r
IoWrite32 (\r
  IN      UINTN                     Port,\r
  IN      UINT32                    Value\r
  );\r
\r
/**\r
  Reads a 32-bit I/O port, performs a bitwise inclusive OR, and writes the\r
  result back to the 32-bit I/O port.\r
\r
  Reads the 32-bit I/O port specified by Port, performs a bitwise inclusive OR\r
  between the read result and the value specified by OrData, and writes the\r
  result to the 32-bit I/O port specified by Port. The value written to the I/O\r
  port is returned. This function must guarantee that all I/O read and write\r
  operations are serialized.\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
  @param  Port    The I/O port to write.\r
  @param  OrData  The value to OR with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT32\r
EFIAPI\r
IoOr32 (\r
  IN      UINTN                     Port,\r
  IN      UINT32                    OrData\r
  );\r
\r
/**\r
  Reads a 32-bit I/O port, performs a bitwise AND, and writes the result back\r
  to the 32-bit I/O port.\r
\r
  Reads the 32-bit I/O port specified by Port, performs a bitwise AND between\r
  the read result and the value specified by AndData, and writes the result to\r
  the 32-bit I/O port specified by Port. The value written to the I/O port is\r
  returned. This function must guarantee that all I/O read and write operations\r
  are serialized.\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
  @param  Port    The I/O port to write.\r
  @param  AndData The value to AND with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT32\r
EFIAPI\r
IoAnd32 (\r
  IN      UINTN                     Port,\r
  IN      UINT32                    AndData\r
  );\r
\r
/**\r
  Reads a 32-bit I/O port, performs a bitwise AND followed by a bitwise\r
  inclusive OR, and writes the result back to the 32-bit I/O port.\r
\r
  Reads the 32-bit I/O port specified by Port, performs a bitwise AND between\r
  the read result and the value specified by AndData, performs a bitwise OR\r
  between the result of the AND operation and the value specified by OrData,\r
  and writes the result to the 32-bit I/O port specified by Port. The value\r
  written to the I/O port is returned. This function must guarantee that all\r
  I/O read and write operations are serialized.\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
  @param  Port    The I/O port to write.\r
  @param  AndData The value to AND with the read value from the I/O port.\r
  @param  OrData  The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT32\r
EFIAPI\r
IoAndThenOr32 (\r
  IN      UINTN                     Port,\r
  IN      UINT32                    AndData,\r
  IN      UINT32                    OrData\r
  );\r
\r
/**\r
  Reads a bit field of an I/O register.\r
\r
  Reads the bit field in a 32-bit I/O register. The bit field is specified by\r
  the StartBit and the EndBit. The value of the bit field is returned.\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
  If StartBit is greater than 31, then ASSERT().\r
  If EndBit is greater than 31, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to read.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..31.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..31.\r
\r
  @return The value read.\r
\r
**/\r
UINT32\r
EFIAPI\r
IoBitFieldRead32 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit\r
  );\r
\r
/**\r
  Writes a bit field to an I/O register.\r
\r
  Writes Value to the bit field of the I/O register. The bit field is specified\r
  by the StartBit and the EndBit. All other bits in the destination I/O\r
  register are preserved. The value written to the I/O port is returned. Extra\r
  left bits in Value are stripped.\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
  If StartBit is greater than 31, then ASSERT().\r
  If EndBit is greater than 31, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..31.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..31.\r
  @param  Value     New value of the bit field.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT32\r
EFIAPI\r
IoBitFieldWrite32 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT32                    Value\r
  );\r
\r
/**\r
  Reads a bit field in a 32-bit port, performs a bitwise OR, and writes the\r
  result back to the bit field in the 32-bit port.\r
\r
  Reads the 32-bit I/O port specified by Port, performs a bitwise inclusive OR\r
  between the read result and the value specified by OrData, and writes the\r
  result to the 32-bit I/O port specified by Port. The value written to the I/O\r
  port is returned. This function must guarantee that all I/O read and write\r
  operations are serialized. Extra left bits in OrData are stripped.\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
  If StartBit is greater than 31, then ASSERT().\r
  If EndBit is greater than 31, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..31.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..31.\r
  @param  OrData    The value to OR with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT32\r
EFIAPI\r
IoBitFieldOr32 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT32                    OrData\r
  );\r
\r
/**\r
  Reads a bit field in a 32-bit port, performs a bitwise AND, and writes the\r
  result back to the bit field in the 32-bit port.\r
\r
  Reads the 32-bit I/O port specified by Port, performs a bitwise AND between\r
  the read result and the value specified by AndData, and writes the result to\r
  the 32-bit I/O port specified by Port. The value written to the I/O port is\r
  returned. This function must guarantee that all I/O read and write operations\r
  are serialized. Extra left bits in AndData are stripped.\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
  If StartBit is greater than 31, then ASSERT().\r
  If EndBit is greater than 31, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..31.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..31.\r
  @param  AndData   The value to AND with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT32\r
EFIAPI\r
IoBitFieldAnd32 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT32                    AndData\r
  );\r
\r
/**\r
  Reads a bit field in a 32-bit port, performs a bitwise AND followed by a\r
  bitwise inclusive OR, and writes the result back to the bit field in the\r
  32-bit port.\r
\r
  Reads the 32-bit I/O port specified by Port, performs a bitwise AND followed\r
  by a bitwise inclusive OR between the read result and the value specified by\r
  AndData, and writes the result to the 32-bit I/O port specified by Port. The\r
  value written to the I/O port is returned. This function must guarantee that\r
  all I/O read and write operations are serialized. Extra left bits in both\r
  AndData and OrData are stripped.\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
  If StartBit is greater than 31, then ASSERT().\r
  If EndBit is greater than 31, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..31.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..31.\r
  @param  AndData   The value to AND with the read value from the I/O port.\r
  @param  OrData    The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT32\r
EFIAPI\r
IoBitFieldAndThenOr32 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT32                    AndData,\r
  IN      UINT32                    OrData\r
  );\r
\r
/**\r
  Reads a 64-bit I/O port.\r
\r
  Reads the 64-bit I/O port specified by Port. The 64-bit read value is returned.\r
  This function must guarantee that all I/O read and write operations are\r
  serialized.\r
\r
  If 64-bit I/O port operations are not supported, then ASSERT().\r
  If Port is not aligned on a 64-bit boundary, then ASSERT().\r
\r
  @param  Port  The I/O port to read.\r
\r
  @return The value read.\r
\r
**/\r
UINT64\r
EFIAPI\r
IoRead64 (\r
  IN      UINTN                     Port\r
  );\r
\r
/**\r
  Writes a 64-bit I/O port.\r
\r
  Writes the 64-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 64-bit I/O port operations are not supported, then ASSERT().\r
  If Port is not aligned on a 64-bit boundary, 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 the I/O port.\r
\r
**/\r
UINT64\r
EFIAPI\r
IoWrite64 (\r
  IN      UINTN                     Port,\r
  IN      UINT64                    Value\r
  );\r
\r
/**\r
  Reads a 64-bit I/O port, performs a bitwise inclusive OR, and writes the\r
  result back to the 64-bit I/O port.\r
\r
  Reads the 64-bit I/O port specified by Port, performs a bitwise inclusive OR\r
  between the read result and the value specified by OrData, and writes the\r
  result to the 64-bit I/O port specified by Port. The value written to the I/O\r
  port is returned. This function must guarantee that all I/O read and write\r
  operations are serialized.\r
\r
  If 64-bit I/O port operations are not supported, then ASSERT().\r
  If Port is not aligned on a 64-bit boundary, then ASSERT().\r
\r
  @param  Port    The I/O port to write.\r
  @param  OrData  The value to OR with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT64\r
EFIAPI\r
IoOr64 (\r
  IN      UINTN                     Port,\r
  IN      UINT64                    OrData\r
  );\r
\r
/**\r
  Reads a 64-bit I/O port, performs a bitwise AND, and writes the result back\r
  to the 64-bit I/O port.\r
\r
  Reads the 64-bit I/O port specified by Port, performs a bitwise AND between\r
  the read result and the value specified by AndData, and writes the result to\r
  the 64-bit I/O port specified by Port. The value written to the I/O port is\r
  returned. This function must guarantee that all I/O read and write operations\r
  are serialized.\r
\r
  If 64-bit I/O port operations are not supported, then ASSERT().\r
  If Port is not aligned on a 64-bit boundary, then ASSERT().\r
\r
  @param  Port    The I/O port to write.\r
  @param  AndData The value to AND with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT64\r
EFIAPI\r
IoAnd64 (\r
  IN      UINTN                     Port,\r
  IN      UINT64                    AndData\r
  );\r
\r
/**\r
  Reads a 64-bit I/O port, performs a bitwise AND followed by a bitwise\r
  inclusive OR, and writes the result back to the 64-bit I/O port.\r
\r
  Reads the 64-bit I/O port specified by Port, performs a bitwise AND between\r
  the read result and the value specified by AndData, performs a bitwise OR\r
  between the result of the AND operation and the value specified by OrData,\r
  and writes the result to the 64-bit I/O port specified by Port. The value\r
  written to the I/O port is returned. This function must guarantee that all\r
  I/O read and write operations are serialized.\r
\r
  If 64-bit I/O port operations are not supported, then ASSERT().\r
  If Port is not aligned on a 64-bit boundary, then ASSERT().\r
\r
  @param  Port    The I/O port to write.\r
  @param  AndData The value to AND with the read value from the I/O port.\r
  @param  OrData  The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT64\r
EFIAPI\r
IoAndThenOr64 (\r
  IN      UINTN                     Port,\r
  IN      UINT64                    AndData,\r
  IN      UINT64                    OrData\r
  );\r
\r
/**\r
  Reads a bit field of an I/O register.\r
\r
  Reads the bit field in a 64-bit I/O register. The bit field is specified by\r
  the StartBit and the EndBit. The value of the bit field is returned.\r
\r
  If 64-bit I/O port operations are not supported, then ASSERT().\r
  If Port is not aligned on a 64-bit boundary, then ASSERT().\r
  If StartBit is greater than 63, then ASSERT().\r
  If EndBit is greater than 63, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to read.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..63.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..63.\r
\r
  @return The value read.\r
\r
**/\r
UINT64\r
EFIAPI\r
IoBitFieldRead64 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit\r
  );\r
\r
/**\r
  Writes a bit field to an I/O register.\r
\r
  Writes Value to the bit field of the I/O register. The bit field is specified\r
  by the StartBit and the EndBit. All other bits in the destination I/O\r
  register are preserved. The value written to the I/O port is returned. Extra\r
  left bits in Value are stripped.\r
\r
  If 64-bit I/O port operations are not supported, then ASSERT().\r
  If Port is not aligned on a 64-bit boundary, then ASSERT().\r
  If StartBit is greater than 63, then ASSERT().\r
  If EndBit is greater than 63, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..63.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..63.\r
  @param  Value     New value of the bit field.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT64\r
EFIAPI\r
IoBitFieldWrite64 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT64                    Value\r
  );\r
\r
/**\r
  Reads a bit field in a 64-bit port, performs a bitwise OR, and writes the\r
  result back to the bit field in the 64-bit port.\r
\r
  Reads the 64-bit I/O port specified by Port, performs a bitwise inclusive OR\r
  between the read result and the value specified by OrData, and writes the\r
  result to the 64-bit I/O port specified by Port. The value written to the I/O\r
  port is returned. This function must guarantee that all I/O read and write\r
  operations are serialized. Extra left bits in OrData are stripped.\r
\r
  If 64-bit I/O port operations are not supported, then ASSERT().\r
  If Port is not aligned on a 64-bit boundary, then ASSERT().\r
  If StartBit is greater than 63, then ASSERT().\r
  If EndBit is greater than 63, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..63.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..63.\r
  @param  OrData    The value to OR with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT64\r
EFIAPI\r
IoBitFieldOr64 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT64                    OrData\r
  );\r
\r
/**\r
  Reads a bit field in a 64-bit port, performs a bitwise AND, and writes the\r
  result back to the bit field in the 64-bit port.\r
\r
  Reads the 64-bit I/O port specified by Port, performs a bitwise AND between\r
  the read result and the value specified by AndData, and writes the result to\r
  the 64-bit I/O port specified by Port. The value written to the I/O port is\r
  returned. This function must guarantee that all I/O read and write operations\r
  are serialized. Extra left bits in AndData are stripped.\r
\r
  If 64-bit I/O port operations are not supported, then ASSERT().\r
  If Port is not aligned on a 64-bit boundary, then ASSERT().\r
  If StartBit is greater than 63, then ASSERT().\r
  If EndBit is greater than 63, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..63.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..63.\r
  @param  AndData   The value to AND with the read value from the I/O port.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT64\r
EFIAPI\r
IoBitFieldAnd64 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT64                    AndData\r
  );\r
\r
/**\r
  Reads a bit field in a 64-bit port, performs a bitwise AND followed by a\r
  bitwise inclusive OR, and writes the result back to the bit field in the\r
  64-bit port.\r
\r
  Reads the 64-bit I/O port specified by Port, performs a bitwise AND followed\r
  by a bitwise inclusive OR between the read result and the value specified by\r
  AndData, and writes the result to the 64-bit I/O port specified by Port. The\r
  value written to the I/O port is returned. This function must guarantee that\r
  all I/O read and write operations are serialized. Extra left bits in both\r
  AndData and OrData are stripped.\r
\r
  If 64-bit I/O port operations are not supported, then ASSERT().\r
  If Port is not aligned on a 64-bit boundary, then ASSERT().\r
  If StartBit is greater than 63, then ASSERT().\r
  If EndBit is greater than 63, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Port      The I/O port to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..63.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..63.\r
  @param  AndData   The value to AND with the read value from the I/O port.\r
  @param  OrData    The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the I/O port.\r
\r
**/\r
UINT64\r
EFIAPI\r
IoBitFieldAndThenOr64 (\r
  IN      UINTN                     Port,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT64                    AndData,\r
  IN      UINT64                    OrData\r
  );\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
/**\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
**/\r
UINT8\r
EFIAPI\r
MmioWrite8 (\r
  IN      UINTN                     Address,\r
  IN      UINT8                     Value\r
  );\r
\r
/**\r
  Reads an 8-bit MMIO register, performs a bitwise inclusive OR, and writes the\r
  result back to the 8-bit MMIO register.\r
\r
  Reads the 8-bit MMIO register specified by Address, performs a bitwise\r
  inclusive OR between the read result and the value specified by OrData, and\r
  writes the result to the 8-bit MMIO register specified by Address. The value\r
  written to the MMIO register is returned. This function must guarantee that\r
  all MMIO read 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  OrData  The value to OR with the read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT8\r
EFIAPI\r
MmioOr8 (\r
  IN      UINTN                     Address,\r
  IN      UINT8                     OrData\r
  );\r
\r
/**\r
  Reads an 8-bit MMIO register, performs a bitwise AND, and writes the result\r
  back to the 8-bit MMIO register.\r
\r
  Reads the 8-bit MMIO register specified by Address, performs a bitwise AND\r
  between the read result and the value specified by AndData, and writes the\r
  result to the 8-bit MMIO register specified by Address. The value written to\r
  the MMIO register is returned. This function must guarantee that all MMIO\r
  read 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  AndData The value to AND with the read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT8\r
EFIAPI\r
MmioAnd8 (\r
  IN      UINTN                     Address,\r
  IN      UINT8                     AndData\r
  );\r
\r
/**\r
  Reads an 8-bit MMIO register, performs a bitwise AND followed by a bitwise\r
  inclusive OR, and writes the result back to the 8-bit MMIO register.\r
\r
  Reads the 8-bit MMIO register specified by Address, performs a bitwise AND\r
  between the read result and the value specified by AndData, performs a\r
  bitwise OR between the result of the AND operation and the value specified by\r
  OrData, and writes the result to the 8-bit MMIO register specified by\r
  Address. The value written to the MMIO register is returned. This function\r
  must guarantee that all MMIO read and write operations are serialized.\r
\r
  If 8-bit MMIO register operations are not supported, then ASSERT().\r
\r
\r
  @param  Address The MMIO register to write.\r
  @param  AndData The value to AND with the read value from the MMIO register.\r
  @param  OrData  The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT8\r
EFIAPI\r
MmioAndThenOr8 (\r
  IN      UINTN                     Address,\r
  IN      UINT8                     AndData,\r
  IN      UINT8                     OrData\r
  );\r
\r
/**\r
  Reads a bit field of a MMIO register.\r
\r
  Reads the bit field in an 8-bit MMIO register. The bit field is specified by\r
  the StartBit and the EndBit. The value of the bit field is returned.\r
\r
  If 8-bit MMIO register operations are not supported, then ASSERT().\r
  If StartBit is greater than 7, then ASSERT().\r
  If EndBit is greater than 7, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to read.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..7.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..7.\r
\r
  @return The value read.\r
\r
**/\r
UINT8\r
EFIAPI\r
MmioBitFieldRead8 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit\r
  );\r
\r
/**\r
  Writes a bit field to a MMIO register.\r
\r
  Writes Value to the bit field of the MMIO register. The bit field is\r
  specified by the StartBit and the EndBit. All other bits in the destination\r
  MMIO register are preserved. The new value of the 8-bit register is returned.\r
\r
  If 8-bit MMIO register operations are not supported, then ASSERT().\r
  If StartBit is greater than 7, then ASSERT().\r
  If EndBit is greater than 7, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..7.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..7.\r
  @param  Value     New value of the bit field.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT8\r
EFIAPI\r
MmioBitFieldWrite8 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT8                     Value\r
  );\r
\r
/**\r
  Reads a bit field in an 8-bit MMIO register, performs a bitwise OR, and\r
  writes the result back to the bit field in the 8-bit MMIO register.\r
\r
  Reads the 8-bit MMIO register specified by Address, performs a bitwise\r
  inclusive OR between the read result and the value specified by OrData, and\r
  writes the result to the 8-bit MMIO register specified by Address. The value\r
  written to the MMIO register is returned. This function must guarantee that\r
  all MMIO read and write operations are serialized. Extra left bits in OrData\r
  are stripped.\r
\r
  If 8-bit MMIO register operations are not supported, then ASSERT().\r
  If StartBit is greater than 7, then ASSERT().\r
  If EndBit is greater than 7, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..7.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..7.\r
  @param  OrData    The value to OR with read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT8\r
EFIAPI\r
MmioBitFieldOr8 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT8                     OrData\r
  );\r
\r
/**\r
  Reads a bit field in an 8-bit MMIO register, performs a bitwise AND, and\r
  writes the result back to the bit field in the 8-bit MMIO register.\r
\r
  Reads the 8-bit MMIO register specified by Address, performs a bitwise AND\r
  between the read result and the value specified by AndData, and writes the\r
  result to the 8-bit MMIO register specified by Address. The value written to\r
  the MMIO register is returned. This function must guarantee that all MMIO\r
  read and write operations are serialized. Extra left bits in AndData are\r
  stripped.\r
\r
  If 8-bit MMIO register operations are not supported, then ASSERT().\r
  If StartBit is greater than 7, then ASSERT().\r
  If EndBit is greater than 7, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..7.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..7.\r
  @param  AndData   The value to AND with read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT8\r
EFIAPI\r
MmioBitFieldAnd8 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT8                     AndData\r
  );\r
\r
/**\r
  Reads a bit field in an 8-bit MMIO register, performs a bitwise AND followed\r
  by a bitwise inclusive OR, and writes the result back to the bit field in the\r
  8-bit MMIO register.\r
\r
  Reads the 8-bit MMIO register specified by Address, performs a bitwise AND\r
  followed by a bitwise inclusive OR between the read result and the value\r
  specified by AndData, and writes the result to the 8-bit MMIO register\r
  specified by Address. The value written to the MMIO register is returned.\r
  This function must guarantee that all MMIO read and write operations are\r
  serialized. Extra left bits in both AndData and OrData are stripped.\r
\r
  If 8-bit MMIO register operations are not supported, then ASSERT().\r
  If StartBit is greater than 7, then ASSERT().\r
  If EndBit is greater than 7, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..7.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..7.\r
  @param  AndData   The value to AND with read value from the MMIO register.\r
  @param  OrData    The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT8\r
EFIAPI\r
MmioBitFieldAndThenOr8 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT8                     AndData,\r
  IN      UINT8                     OrData\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
/**\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
**/\r
UINT16\r
EFIAPI\r
MmioWrite16 (\r
  IN      UINTN                     Address,\r
  IN      UINT16                    Value\r
  );\r
\r
/**\r
  Reads a 16-bit MMIO register, performs a bitwise inclusive OR, and writes the\r
  result back to the 16-bit MMIO register.\r
\r
  Reads the 16-bit MMIO register specified by Address, performs a bitwise\r
  inclusive OR between the read result and the value specified by OrData, and\r
  writes the result to the 16-bit MMIO register specified by Address. The value\r
  written to the MMIO register is returned. This function must guarantee that\r
  all MMIO read 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  OrData  The value to OR with the read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT16\r
EFIAPI\r
MmioOr16 (\r
  IN      UINTN                     Address,\r
  IN      UINT16                    OrData\r
  );\r
\r
/**\r
  Reads a 16-bit MMIO register, performs a bitwise AND, and writes the result\r
  back to the 16-bit MMIO register.\r
\r
  Reads the 16-bit MMIO register specified by Address, performs a bitwise AND\r
  between the read result and the value specified by AndData, and writes the\r
  result to the 16-bit MMIO register specified by Address. The value written to\r
  the MMIO register is returned. This function must guarantee that all MMIO\r
  read 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  AndData The value to AND with the read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT16\r
EFIAPI\r
MmioAnd16 (\r
  IN      UINTN                     Address,\r
  IN      UINT16                    AndData\r
  );\r
\r
/**\r
  Reads a 16-bit MMIO register, performs a bitwise AND followed by a bitwise\r
  inclusive OR, and writes the result back to the 16-bit MMIO register.\r
\r
  Reads the 16-bit MMIO register specified by Address, performs a bitwise AND\r
  between the read result and the value specified by AndData, performs a\r
  bitwise OR between the result of the AND operation and the value specified by\r
  OrData, and writes the result to the 16-bit MMIO register specified by\r
  Address. The value written to the MMIO register is returned. This function\r
  must guarantee that all MMIO read 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  AndData The value to AND with the read value from the MMIO register.\r
  @param  OrData  The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT16\r
EFIAPI\r
MmioAndThenOr16 (\r
  IN      UINTN                     Address,\r
  IN      UINT16                    AndData,\r
  IN      UINT16                    OrData\r
  );\r
\r
/**\r
  Reads a bit field of a MMIO register.\r
\r
  Reads the bit field in a 16-bit MMIO register. The bit field is specified by\r
  the StartBit and the EndBit. The value of the bit field is returned.\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
  If StartBit is greater than 15, then ASSERT().\r
  If EndBit is greater than 15, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to read.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..15.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..15.\r
\r
  @return The value read.\r
\r
**/\r
UINT16\r
EFIAPI\r
MmioBitFieldRead16 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit\r
  );\r
\r
/**\r
  Writes a bit field to a MMIO register.\r
\r
  Writes Value to the bit field of the MMIO register. The bit field is\r
  specified by the StartBit and the EndBit. All other bits in the destination\r
  MMIO register are preserved. The new value of the 16-bit register is returned.\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
  If StartBit is greater than 15, then ASSERT().\r
  If EndBit is greater than 15, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..15.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..15.\r
  @param  Value     New value of the bit field.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT16\r
EFIAPI\r
MmioBitFieldWrite16 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT16                    Value\r
  );\r
\r
/**\r
  Reads a bit field in a 16-bit MMIO register, performs a bitwise OR, and\r
  writes the result back to the bit field in the 16-bit MMIO register.\r
\r
  Reads the 16-bit MMIO register specified by Address, performs a bitwise\r
  inclusive OR between the read result and the value specified by OrData, and\r
  writes the result to the 16-bit MMIO register specified by Address. The value\r
  written to the MMIO register is returned. This function must guarantee that\r
  all MMIO read and write operations are serialized. Extra left bits in OrData\r
  are stripped.\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
  If StartBit is greater than 15, then ASSERT().\r
  If EndBit is greater than 15, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..15.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..15.\r
  @param  OrData    The value to OR with read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT16\r
EFIAPI\r
MmioBitFieldOr16 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT16                    OrData\r
  );\r
\r
/**\r
  Reads a bit field in a 16-bit MMIO register, performs a bitwise AND, and\r
  writes the result back to the bit field in the 16-bit MMIO register.\r
\r
  Reads the 16-bit MMIO register specified by Address, performs a bitwise AND\r
  between the read result and the value specified by AndData, and writes the\r
  result to the 16-bit MMIO register specified by Address. The value written to\r
  the MMIO register is returned. This function must guarantee that all MMIO\r
  read and write operations are serialized. Extra left bits in AndData are\r
  stripped.\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
  If StartBit is greater than 15, then ASSERT().\r
  If EndBit is greater than 15, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..15.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..15.\r
  @param  AndData   The value to AND with read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT16\r
EFIAPI\r
MmioBitFieldAnd16 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT16                    AndData\r
  );\r
\r
/**\r
  Reads a bit field in a 16-bit MMIO register, performs a bitwise AND followed\r
  by a bitwise inclusive OR, and writes the result back to the bit field in the\r
  16-bit MMIO register.\r
\r
  Reads the 16-bit MMIO register specified by Address, performs a bitwise AND\r
  followed by a bitwise inclusive OR between the read result and the value\r
  specified by AndData, and writes the result to the 16-bit MMIO register\r
  specified by Address. The value written to the MMIO register is returned.\r
  This function must guarantee that all MMIO read and write operations are\r
  serialized. Extra left bits in both AndData and OrData are stripped.\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
  If StartBit is greater than 15, then ASSERT().\r
  If EndBit is greater than 15, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..15.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..15.\r
  @param  AndData   The value to AND with read value from the MMIO register.\r
  @param  OrData    The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT16\r
EFIAPI\r
MmioBitFieldAndThenOr16 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT16                    AndData,\r
  IN      UINT16                    OrData\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
/**\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
**/\r
UINT32\r
EFIAPI\r
MmioWrite32 (\r
  IN      UINTN                     Address,\r
  IN      UINT32                    Value\r
  );\r
\r
/**\r
  Reads a 32-bit MMIO register, performs a bitwise inclusive OR, and writes the\r
  result back to the 32-bit MMIO register.\r
\r
  Reads the 32-bit MMIO register specified by Address, performs a bitwise\r
  inclusive OR between the read result and the value specified by OrData, and\r
  writes the result to the 32-bit MMIO register specified by Address. The value\r
  written to the MMIO register is returned. This function must guarantee that\r
  all MMIO read 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  OrData  The value to OR with the read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT32\r
EFIAPI\r
MmioOr32 (\r
  IN      UINTN                     Address,\r
  IN      UINT32                    OrData\r
  );\r
\r
/**\r
  Reads a 32-bit MMIO register, performs a bitwise AND, and writes the result\r
  back to the 32-bit MMIO register.\r
\r
  Reads the 32-bit MMIO register specified by Address, performs a bitwise AND\r
  between the read result and the value specified by AndData, and writes the\r
  result to the 32-bit MMIO register specified by Address. The value written to\r
  the MMIO register is returned. This function must guarantee that all MMIO\r
  read 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  AndData The value to AND with the read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT32\r
EFIAPI\r
MmioAnd32 (\r
  IN      UINTN                     Address,\r
  IN      UINT32                    AndData\r
  );\r
\r
/**\r
  Reads a 32-bit MMIO register, performs a bitwise AND followed by a bitwise\r
  inclusive OR, and writes the result back to the 32-bit MMIO register.\r
\r
  Reads the 32-bit MMIO register specified by Address, performs a bitwise AND\r
  between the read result and the value specified by AndData, performs a\r
  bitwise OR between the result of the AND operation and the value specified by\r
  OrData, and writes the result to the 32-bit MMIO register specified by\r
  Address. The value written to the MMIO register is returned. This function\r
  must guarantee that all MMIO read 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  AndData The value to AND with the read value from the MMIO register.\r
  @param  OrData  The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT32\r
EFIAPI\r
MmioAndThenOr32 (\r
  IN      UINTN                     Address,\r
  IN      UINT32                    AndData,\r
  IN      UINT32                    OrData\r
  );\r
\r
/**\r
  Reads a bit field of a MMIO register.\r
\r
  Reads the bit field in a 32-bit MMIO register. The bit field is specified by\r
  the StartBit and the EndBit. The value of the bit field is returned.\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
  If StartBit is greater than 31, then ASSERT().\r
  If EndBit is greater than 31, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to read.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..31.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..31.\r
\r
  @return The value read.\r
\r
**/\r
UINT32\r
EFIAPI\r
MmioBitFieldRead32 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit\r
  );\r
\r
/**\r
  Writes a bit field to a MMIO register.\r
\r
  Writes Value to the bit field of the MMIO register. The bit field is\r
  specified by the StartBit and the EndBit. All other bits in the destination\r
  MMIO register are preserved. The new value of the 32-bit register is returned.\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
  If StartBit is greater than 31, then ASSERT().\r
  If EndBit is greater than 31, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..31.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..31.\r
  @param  Value     New value of the bit field.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT32\r
EFIAPI\r
MmioBitFieldWrite32 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT32                    Value\r
  );\r
\r
/**\r
  Reads a bit field in a 32-bit MMIO register, performs a bitwise OR, and\r
  writes the result back to the bit field in the 32-bit MMIO register.\r
\r
  Reads the 32-bit MMIO register specified by Address, performs a bitwise\r
  inclusive OR between the read result and the value specified by OrData, and\r
  writes the result to the 32-bit MMIO register specified by Address. The value\r
  written to the MMIO register is returned. This function must guarantee that\r
  all MMIO read and write operations are serialized. Extra left bits in OrData\r
  are stripped.\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
  If StartBit is greater than 31, then ASSERT().\r
  If EndBit is greater than 31, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..31.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..31.\r
  @param  OrData    The value to OR with read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT32\r
EFIAPI\r
MmioBitFieldOr32 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT32                    OrData\r
  );\r
\r
/**\r
  Reads a bit field in a 32-bit MMIO register, performs a bitwise AND, and\r
  writes the result back to the bit field in the 32-bit MMIO register.\r
\r
  Reads the 32-bit MMIO register specified by Address, performs a bitwise AND\r
  between the read result and the value specified by AndData, and writes the\r
  result to the 32-bit MMIO register specified by Address. The value written to\r
  the MMIO register is returned. This function must guarantee that all MMIO\r
  read and write operations are serialized. Extra left bits in AndData are\r
  stripped.\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
  If StartBit is greater than 31, then ASSERT().\r
  If EndBit is greater than 31, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..31.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..31.\r
  @param  AndData   The value to AND with read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT32\r
EFIAPI\r
MmioBitFieldAnd32 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT32                    AndData\r
  );\r
\r
/**\r
  Reads a bit field in a 32-bit MMIO register, performs a bitwise AND followed\r
  by a bitwise inclusive OR, and writes the result back to the bit field in the\r
  32-bit MMIO register.\r
\r
  Reads the 32-bit MMIO register specified by Address, performs a bitwise AND\r
  followed by a bitwise inclusive OR between the read result and the value\r
  specified by AndData, and writes the result to the 32-bit MMIO register\r
  specified by Address. The value written to the MMIO register is returned.\r
  This function must guarantee that all MMIO read and write operations are\r
  serialized. Extra left bits in both AndData and OrData are stripped.\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
  If StartBit is greater than 31, then ASSERT().\r
  If EndBit is greater than 31, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..31.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..31.\r
  @param  AndData   The value to AND with read value from the MMIO register.\r
  @param  OrData    The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT32\r
EFIAPI\r
MmioBitFieldAndThenOr32 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT32                    AndData,\r
  IN      UINT32                    OrData\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
/**\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
/**\r
  Reads a 64-bit MMIO register, performs a bitwise inclusive OR, and writes the\r
  result back to the 64-bit MMIO register.\r
\r
  Reads the 64-bit MMIO register specified by Address, performs a bitwise\r
  inclusive OR between the read result and the value specified by OrData, and\r
  writes the result to the 64-bit MMIO register specified by Address. The value\r
  written to the MMIO register is returned. This function must guarantee that\r
  all MMIO read 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  OrData  The value to OR with the read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT64\r
EFIAPI\r
MmioOr64 (\r
  IN      UINTN                     Address,\r
  IN      UINT64                    OrData\r
  );\r
\r
/**\r
  Reads a 64-bit MMIO register, performs a bitwise AND, and writes the result\r
  back to the 64-bit MMIO register.\r
\r
  Reads the 64-bit MMIO register specified by Address, performs a bitwise AND\r
  between the read result and the value specified by AndData, and writes the\r
  result to the 64-bit MMIO register specified by Address. The value written to\r
  the MMIO register is returned. This function must guarantee that all MMIO\r
  read 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  AndData The value to AND with the read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT64\r
EFIAPI\r
MmioAnd64 (\r
  IN      UINTN                     Address,\r
  IN      UINT64                    AndData\r
  );\r
\r
/**\r
  Reads a 64-bit MMIO register, performs a bitwise AND followed by a bitwise\r
  inclusive OR, and writes the result back to the 64-bit MMIO register.\r
\r
  Reads the 64-bit MMIO register specified by Address, performs a bitwise AND\r
  between the read result and the value specified by AndData, performs a\r
  bitwise OR between the result of the AND operation and the value specified by\r
  OrData, and writes the result to the 64-bit MMIO register specified by\r
  Address. The value written to the MMIO register is returned. This function\r
  must guarantee that all MMIO read 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  AndData The value to AND with the read value from the MMIO register.\r
  @param  OrData  The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT64\r
EFIAPI\r
MmioAndThenOr64 (\r
  IN      UINTN                     Address,\r
  IN      UINT64                    AndData,\r
  IN      UINT64                    OrData\r
  );\r
\r
/**\r
  Reads a bit field of a MMIO register.\r
\r
  Reads the bit field in a 64-bit MMIO register. The bit field is specified by\r
  the StartBit and the EndBit. The value of the bit field is returned.\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
  If StartBit is greater than 63, then ASSERT().\r
  If EndBit is greater than 63, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to read.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..63.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..63.\r
\r
  @return The value read.\r
\r
**/\r
UINT64\r
EFIAPI\r
MmioBitFieldRead64 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit\r
  );\r
\r
/**\r
  Writes a bit field to a MMIO register.\r
\r
  Writes Value to the bit field of the MMIO register. The bit field is\r
  specified by the StartBit and the EndBit. All other bits in the destination\r
  MMIO register are preserved. The new value of the 64-bit register is returned.\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
  If StartBit is greater than 63, then ASSERT().\r
  If EndBit is greater than 63, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..63.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..63.\r
  @param  Value     New value of the bit field.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT64\r
EFIAPI\r
MmioBitFieldWrite64 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT64                    Value\r
  );\r
\r
/**\r
  Reads a bit field in a 64-bit MMIO register, performs a bitwise OR, and\r
  writes the result back to the bit field in the 64-bit MMIO register.\r
\r
  Reads the 64-bit MMIO register specified by Address, performs a bitwise\r
  inclusive OR between the read result and the value specified by OrData, and\r
  writes the result to the 64-bit MMIO register specified by Address. The value\r
  written to the MMIO register is returned. This function must guarantee that\r
  all MMIO read and write operations are serialized. Extra left bits in OrData\r
  are stripped.\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
  If StartBit is greater than 63, then ASSERT().\r
  If EndBit is greater than 63, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..63.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..63.\r
  @param  OrData    The value to OR with read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT64\r
EFIAPI\r
MmioBitFieldOr64 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT64                    OrData\r
  );\r
\r
/**\r
  Reads a bit field in a 64-bit MMIO register, performs a bitwise AND, and\r
  writes the result back to the bit field in the 64-bit MMIO register.\r
\r
  Reads the 64-bit MMIO register specified by Address, performs a bitwise AND\r
  between the read result and the value specified by AndData, and writes the\r
  result to the 64-bit MMIO register specified by Address. The value written to\r
  the MMIO register is returned. This function must guarantee that all MMIO\r
  read and write operations are serialized. Extra left bits in AndData are\r
  stripped.\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
  If StartBit is greater than 63, then ASSERT().\r
  If EndBit is greater than 63, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..63.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..63.\r
  @param  AndData   The value to AND with read value from the MMIO register.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT64\r
EFIAPI\r
MmioBitFieldAnd64 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT64                    AndData\r
  );\r
\r
/**\r
  Reads a bit field in a 64-bit MMIO register, performs a bitwise AND followed\r
  by a bitwise inclusive OR, and writes the result back to the bit field in the\r
  64-bit MMIO register.\r
\r
  Reads the 64-bit MMIO register specified by Address, performs a bitwise AND\r
  followed by a bitwise inclusive OR between the read result and the value\r
  specified by AndData, and writes the result to the 64-bit MMIO register\r
  specified by Address. The value written to the MMIO register is returned.\r
  This function must guarantee that all MMIO read and write operations are\r
  serialized. Extra left bits in both AndData and OrData are stripped.\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
  If StartBit is greater than 63, then ASSERT().\r
  If EndBit is greater than 63, then ASSERT().\r
  If EndBit is less than StartBit, then ASSERT().\r
\r
  @param  Address   MMIO register to write.\r
  @param  StartBit  The ordinal of the least significant bit in the bit field.\r
                    Range 0..63.\r
  @param  EndBit    The ordinal of the most significant bit in the bit field.\r
                    Range 0..63.\r
  @param  AndData   The value to AND with read value from the MMIO register.\r
  @param  OrData    The value to OR with the result of the AND operation.\r
\r
  @return The value written back to the MMIO register.\r
\r
**/\r
UINT64\r
EFIAPI\r
MmioBitFieldAndThenOr64 (\r
  IN      UINTN                     Address,\r
  IN      UINTN                     StartBit,\r
  IN      UINTN                     EndBit,\r
  IN      UINT64                    AndData,\r
  IN      UINT64                    OrData\r
  );\r
\r
/**\r
  Copy data from MMIO region to system memory by using 8-bit access.\r
\r
  Copy data from MMIO region specified by starting address StartAddress \r
  to system memory specified by Buffer by using 8-bit access. The total \r
  number of byte to be copied is specified by Length. Buffer is returned.\r
  \r
  If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r
  If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
\r
\r
  @param  StartAddress    Starting address for the MMIO region to be copied from.\r
  @param  Length          The size, in bytes, of Buffer.\r
  @param  Buffer          Pointer to a system memory buffer receiving the data read.\r
\r
  @return Buffer\r
\r
**/\r
UINT8 *\r
EFIAPI\r
MmioReadBuffer8 (\r
  IN  UINTN       StartAddress,\r
  IN  UINTN       Length,\r
  OUT UINT8       *Buffer\r
  );\r
\r
/**\r
  Copy data from MMIO region to system memory by using 16-bit access.\r
\r
  Copy data from MMIO region specified by starting address StartAddress \r
  to system memory specified by Buffer by using 16-bit access. The total \r
  number of byte to be copied is specified by Length. Buffer is returned.\r
  \r
  If StartAddress is not aligned on a 16-bit boundary, then ASSERT().\r
\r
  If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r
  If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
\r
  If Length is not aligned on a 16-bit boundary, then ASSERT().\r
  If Buffer is not aligned on a 16-bit boundary, then ASSERT().\r
\r
  @param  StartAddress    Starting address for the MMIO region to be copied from.\r
  @param  Length          The size, in bytes, of Buffer.\r
  @param  Buffer          Pointer to a system memory buffer receiving the data read.\r
\r
  @return Buffer\r
\r
**/\r
UINT16 *\r
EFIAPI\r
MmioReadBuffer16 (\r
  IN  UINTN       StartAddress,\r
  IN  UINTN       Length,\r
  OUT UINT16      *Buffer\r
  );\r
\r
/**\r
  Copy data from MMIO region to system memory by using 32-bit access.\r
\r
  Copy data from MMIO region specified by starting address StartAddress \r
  to system memory specified by Buffer by using 32-bit access. The total \r
  number of byte to be copied is specified by Length. Buffer is returned.\r
  \r
  If StartAddress is not aligned on a 32-bit boundary, then ASSERT().\r
\r
  If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r
  If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
\r
  If Length is not aligned on a 32-bit boundary, then ASSERT().\r
  If Buffer is not aligned on a 32-bit boundary, then ASSERT().\r
\r
  @param  StartAddress    Starting address for the MMIO region to be copied from.\r
  @param  Length          The size, in bytes, of Buffer.\r
  @param  Buffer          Pointer to a system memory buffer receiving the data read.\r
\r
  @return Buffer\r
\r
**/\r
UINT32 *\r
EFIAPI\r
MmioReadBuffer32 (\r
  IN  UINTN       StartAddress,\r
  IN  UINTN       Length,\r
  OUT UINT32      *Buffer\r
  );\r
\r
/**\r
  Copy data from MMIO region to system memory by using 64-bit access.\r
\r
  Copy data from MMIO region specified by starting address StartAddress \r
  to system memory specified by Buffer by using 64-bit access. The total \r
  number of byte to be copied is specified by Length. Buffer is returned.\r
  \r
  If StartAddress is not aligned on a 64-bit boundary, then ASSERT().\r
\r
  If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r
  If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
\r
  If Length is not aligned on a 64-bit boundary, then ASSERT().\r
  If Buffer is not aligned on a 64-bit boundary, then ASSERT().\r
\r
  @param  StartAddress    Starting address for the MMIO region to be copied from.\r
  @param  Length          The size, in bytes, of Buffer.\r
  @param  Buffer          Pointer to a system memory buffer receiving the data read.\r
\r
  @return Buffer\r
\r
**/\r
UINT64 *\r
EFIAPI\r
MmioReadBuffer64 (\r
  IN  UINTN       StartAddress,\r
  IN  UINTN       Length,\r
  OUT UINT64      *Buffer\r
  );\r
\r
/**\r
  Copy data from system memory to MMIO region by using 8-bit access.\r
\r
  Copy data from system memory specified by Buffer to MMIO region specified \r
  by starting address StartAddress by using 8-bit access. The total number \r
  of byte to be copied is specified by Length. Buffer is returned.\r
  \r
  If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r
  If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r
\r
\r
  @param  StartAddress    Starting address for the MMIO region to be copied to.\r
  @param  Length          The size, in bytes, of Buffer.\r
  @param  Buffer          Pointer to a system memory buffer containing the data to write.\r
\r
  @return Size in bytes of the copy.\r
\r
**/\r
UINT8 *\r
EFIAPI\r
MmioWriteBuffer8 (\r
  IN  UINTN         StartAddress,\r
  IN  UINTN         Length,\r
  IN  CONST UINT8   *Buffer\r
  );\r
\r
/**\r
  Copy data from system memory to MMIO region by using 16-bit access.\r
\r
  Copy data from system memory specified by Buffer to MMIO region specified \r
  by starting address StartAddress by using 16-bit access. The total number \r
  of byte to be copied is specified by Length. Length is returned.\r
  \r
  If StartAddress is not aligned on a 16-bit boundary, then ASSERT().\r
\r
  If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r
  If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r
\r
  If Length is not aligned on a 16-bit boundary, then ASSERT().\r
\r
  If Buffer is not aligned on a 16-bit boundary, then ASSERT().\r
\r
  @param  StartAddress    Starting address for the MMIO region to be copied to.\r
  @param  Length          The size, in bytes, of Buffer.\r
  @param  Buffer          Pointer to a system memory buffer containing the data to write.\r
\r
  @return Size in bytes of the copy.\r
\r
**/\r
UINT16 *\r
EFIAPI\r
MmioWriteBuffer16 (\r
  IN  UINTN        StartAddress,\r
  IN  UINTN        Length,\r
  IN  CONST UINT16 *Buffer\r
  );\r
\r
/**\r
  Copy data from system memory to MMIO region by using 32-bit access.\r
\r
  Copy data from system memory specified by Buffer to MMIO region specified \r
  by starting address StartAddress by using 32-bit access. The total number \r
  of byte to be copied is specified by Length. Length is returned.\r
  \r
  If StartAddress is not aligned on a 32-bit boundary, then ASSERT().\r
\r
  If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r
  If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r
\r
  If Length is not aligned on a 32-bit boundary, then ASSERT().\r
\r
  If Buffer is not aligned on a 32-bit boundary, then ASSERT().\r
\r
  @param  StartAddress    Starting address for the MMIO region to be copied to.\r
  @param  Length          The size, in bytes, of Buffer.\r
  @param  Buffer          Pointer to a system memory buffer containing the data to write.\r
\r
  @return Size in bytes of the copy.\r
\r
**/\r
UINT32 *\r
EFIAPI\r
MmioWriteBuffer32 (\r
  IN  UINTN        StartAddress,\r
  IN  UINTN        Length,\r
  IN  CONST UINT32 *Buffer\r
  );\r
\r
/**\r
  Copy data from system memory to MMIO region by using 64-bit access.\r
\r
  Copy data from system memory specified by Buffer to MMIO region specified \r
  by starting address StartAddress by using 64-bit access. The total number \r
  of byte to be copied is specified by Length. Length is returned.\r
  \r
  If StartAddress is not aligned on a 64-bit boundary, then ASSERT().\r
\r
  If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r
  If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r
\r
  If Length is not aligned on a 64-bit boundary, then ASSERT().\r
\r
  If Buffer is not aligned on a 64-bit boundary, then ASSERT().\r
\r
  @param  StartAddress    Starting address for the MMIO region to be copied to.\r
  @param  Length          The size, in bytes, of Buffer.\r
  @param  Buffer          Pointer to a system memory buffer containing the data to write.\r
\r
  @return Size in bytes of the copy.\r
\r
**/\r
UINT64 *\r
EFIAPI\r
MmioWriteBuffer64 (\r
  IN  UINTN        StartAddress,\r
  IN  UINTN        Length,\r
  IN  CONST UINT64 *Buffer\r
  );\r
\r
\r
#endif\r
\r