* MdePkg: Move SIO header files to correct location.

The patch also fixed some comments to align the code.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17507 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Include/Ppi/IsaHc.h

@@ -0,0 +1,119 @@
+/** @file
+  This PPI opens or closes an I/O aperture in a ISA HOST controller.
+
+  Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+  This program and the accompanying materials                          
+  are licensed and made available under the terms and conditions of the BSD License         
+  which accompanies this distribution.  The full text of the license may be found at        
+  http://opensource.org/licenses/bsd-license.php                                            
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             
+
+  @par Revision Reference:
+  This PPI is from PI Version 1.2.1.
+
+**/
+
+#ifndef __ISA_HC_PPI_H__
+#define __ISA_HC_PPI_H__
+
+#define EFI_ISA_HC_PPI_GUID \
+  { \
+    0x8d48bd70, 0xc8a3, 0x4c06, {0x90, 0x1b, 0x74, 0x79, 0x46, 0xaa, 0xc3, 0x58} \
+  }
+
+typedef struct _EFI_ISA_HC_PPI EFI_ISA_HC_PPI;
+typedef struct _EFI_ISA_HC_PPI *PEFI_ISA_HC_PPI;
+
+/**
+  Open I/O aperture.
+
+  This function opens an I/O aperture in a ISA Host Controller for the I/O
+  addresses specified by IoAddress to IoAddress + IoLength - 1. It is possible
+  that more than one caller may be assigned to the same aperture.
+  It may be possible that a single hardware aperture may be used for more than
+  one device. This function tracks the number of times that each aperture is 
+  referenced, and doesa not close the hardware aperture (via CloseIoAperture())
+  until there are no more references to it.
+ 
+  @param This             A pointer to this instance of the EFI_ISA_HC_PPI.
+  @param IoAddress        An unsigned integer that specifies the first byte of
+                          the I/O space required.
+  @param IoLength         An unsigned integer that specifies the number of
+                          bytes of the I/O space required.
+  @param IoApertureHandle A pointer to the returned I/O aperture handle.
+                          This value can be used on subsequent calls to CloseIoAperture().
+
+  @retval EFI_SUCCESS          The I/O aperture was opened successfully.
+  @retval EFI_UNSUPPORTED      The ISA Host Controller is a subtractive-decode controller.
+  @retval EFI_OUT_OF_RESOURCES There is no available I/O aperture.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PEI_ISA_HC_OPEN_IO) (
+  IN CONST EFI_ISA_HC_PPI   *This,
+  IN UINT16                 IoAddress,
+  IN UINT16                 IoLength,
+  OUT UINT64                *IoApertureHandle
+  );
+
+/**
+  Close I/O aperture.
+
+  This function closes a previously opened I/O aperture handle. If there are no
+  more I/O aperture handles that refer to the hardware I/O aperture resource,
+  then the hardware I/O aperture is closed.
+  It may be possible that a single hardware aperture may be used for more than
+  one device. This function tracks the number of times that each aperture is
+  referenced, and does not close the hardware aperture (via CloseIoAperture())
+  until there are no more references to it.
+
+  @param This             A pointer to this instance of the EFI_ISA_HC_PPI.
+  @param IoApertureHandle The I/O aperture handle previously returned from a
+                          call to OpenIoAperture().
+
+  @retval EFI_SUCCESS   The I/O aperture was closed successfully.
+**/ 
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PEI_ISA_HC_CLOSE_IO) (
+  IN CONST EFI_ISA_HC_PPI     *This,
+  IN UINT64                   IoApertureHandle
+  );
+
+///
+/// This PPI provides functions for opening or closing an I/O aperture.
+///
+struct _EFI_ISA_HC_PPI {
+  ///
+  /// An unsigned integer that specifies the version of the PPI structure.
+  ///
+  UINT32                  Version;
+  ///
+  /// The address of the ISA/LPC Bridge device.
+  /// For PCI, this is the segment, bus, device and function of the a ISA/LPC
+  /// Bridge device.
+  ///
+  /// If bits 24-31 are 0, then the definition is:
+  /// Bits 0:2   - Function
+  /// Bits 3-7   - Device
+  /// Bits 8:15  - Bus
+  /// Bits 16-23 - Segment
+  /// Bits 24-31 - Bus Type
+  /// If bits 24-31 are 0xff, then the definition is platform-specific.
+  ///
+  UINT32                  Address;
+  ///
+  /// Opens an aperture on a positive-decode ISA Host Controller.
+  ///
+  EFI_PEI_ISA_HC_OPEN_IO  OpenIoAperture;
+  ///
+  /// Closes an aperture on a positive-decode ISA Host Controller.
+  ///
+  EFI_PEI_ISA_HC_CLOSE_IO CloseIoAperture;
+};
+
+extern EFI_GUID gEfiIsaHcPpiGuid;
+
+#endif