Change SMM CPU I/O to SMM CPU I/O 2

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9735 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Include/Protocol/SmmCpuIo2.h

@@ -0,0 +1,105 @@
+/** @file
+  SMM CPU I/O 2 protocol as defined in the PI 1.2 specification.
+
+  This protocol provides CPU I/O and memory access within SMM.
+
+  Copyright (c) 2009 - 2010, Intel Corporation
+  All rights reserved. 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.
+
+**/
+
+#ifndef _SMM_CPU_IO2_H_
+#define _SMM_CPU_IO2_H_
+
+///
+/// Note:
+///   To avoid name conflict between PI and Framework SMM spec, the following names defined
+///   in PI 1.2 SMM spec are renamed.
+///
+///   *EFI_SMM_CPU_IO*    -> *EFI_SMM_CPU_IO2*
+///   *EFI_SMM_IO_ACCESS* -> *EFI_SMM_IO_ACCESS2*
+///
+
+#define EFI_SMM_CPU_IO2_PROTOCOL_GUID \
+  { \
+    0x3242A9D8, 0xCE70, 0x4AA0, { 0x95, 0x5D, 0x5E, 0x7B, 0x14, 0x0D, 0xE4, 0xD2 } \
+  }
+
+typedef struct _EFI_SMM_CPU_IO2_PROTOCOL  EFI_SMM_CPU_IO2_PROTOCOL;
+
+///
+/// Width of the SMM CPU I/O operations
+///
+typedef enum {
+  SMM_IO_UINT8  = 0,
+  SMM_IO_UINT16 = 1,
+  SMM_IO_UINT32 = 2,
+  SMM_IO_UINT64 = 3
+} EFI_SMM_IO_WIDTH;
+
+/**
+  Provides the basic memory and I/O interfaces used toabstract accesses to devices.
+
+  The I/O operations are carried out exactly as requested.  The caller is 
+  responsible for any alignment and I/O width issues that the bus, device, 
+  platform, or type of I/O might require.
+
+  @param[in]      This     The EFI_SMM_CPU_IO2_PROTOCOL instance.
+  @param[in]      Width    Signifies the width of the I/O operations.
+  @param[in]      Address  The base address of the I/O operations.  The caller is 
+                           responsible for aligning the Address if required. 
+  @param[in]      Count    The number of I/O operations to perform.
+  @param[in,out]  Buffer   For read operations, the destination buffer to store 
+                           the results.  For write operations, the source buffer 
+                           from which to write data.
+
+  @retval EFI_SUCCESS            The data was read from or written to the device.
+  @retval EFI_UNSUPPORTED        The Address is not valid for this system.
+  @retval EFI_INVALID_PARAMETER  Width or Count, or both, were invalid.
+  @retval EFI_OUT_OF_RESOURCES   The request could not be completed due to a lack
+                                 of resources.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_SMM_CPU_IO2)(
+  IN     CONST EFI_SMM_CPU_IO2_PROTOCOL  *This,
+  IN     EFI_SMM_IO_WIDTH                Width,
+  IN     UINT64                          Address,
+  IN     UINTN                           Count,
+  IN OUT VOID                            *Buffer
+  );
+
+typedef struct {
+  ///
+  /// This service provides the various modalities of memory and I/O read.
+  ///
+  EFI_SMM_CPU_IO2  Read;
+  ///
+  /// This service provides the various modalities of memory and I/O write.
+  ///
+  EFI_SMM_CPU_IO2  Write;
+} EFI_SMM_IO_ACCESS2;
+
+///
+/// SMM CPU I/O Protocol provides CPU I/O and memory access within SMM.
+///
+struct _EFI_SMM_CPU_IO2_PROTOCOL {
+  ///
+  /// Allows reads and writes to memory-mapped I/O space.
+  ///
+  EFI_SMM_IO_ACCESS2 Mem;
+  ///
+  /// Allows reads and writes to I/O space.
+  ///
+  EFI_SMM_IO_ACCESS2 Io;
+};
+
+extern EFI_GUID gEfiSmmCpuIo2ProtocolGuid;
+
+#endif