EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseIoLibIntrinsic/IoLib.c

   1 /*++
   2
   3 Copyright (c) 2004 - 2006, Intel Corporation. All rights reserved.<BR>
   4 This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12
  13 Module Name:
  14
  15   IoLib.c
  16
  17 Abstract:
  18
  19   Common I/O Library routines.
  20
  21 --*/
  22
  23 #include "EdkIIGlueBase.h"
  24
  25 /**
  26   Reads a 64-bit I/O port.
  27
  28   Reads the 64-bit I/O port specified by Port. The 64-bit read value is returned.
  29   This function must guarantee that all I/O read and write operations are
  30   serialized.
  31
  32   If 64-bit I/O port operations are not supported, then ASSERT().
  33
  34   @param  Port  The I/O port to read.
  35
  36   @return The value read.
  37
  38 **/
  39 UINT64
  40 EFIAPI
  41 IoRead64 (
  42   IN      UINTN                     Port
  43   )
  44 {
  45   ASSERT (FALSE);
  46   return 0;
  47 }
  48
  49 /**
  50   Writes a 64-bit I/O port.
  51
  52   Writes the 64-bit I/O port specified by Port with the value specified by Value
  53   and returns Value. This function must guarantee that all I/O read and write
  54   operations are serialized.
  55
  56   If 64-bit I/O port operations are not supported, then ASSERT().
  57
  58   @param  Port  The I/O port to write.
  59   @param  Value The value to write to the I/O port.
  60
  61   @return The value written the I/O port.
  62
  63 **/
  64 UINT64
  65 EFIAPI
  66 IoWrite64 (
  67   IN      UINTN                     Port,
  68   IN      UINT64                    Value
  69   )
  70 {
  71   ASSERT (FALSE);
  72   return 0;
  73 }
  74