MdePkg: Add PCI Express 2.1 and 3.0 structures

This adds PCI Express extended capabilities structures.  These structures are required for enhancements to the shell.

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

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15076 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Include/IndustryStandard/PciExpress30.h

@@ -0,0 +1,32 @@
+/** @file
+  Support for the PCI Express 3.0 standard.
+
+  This header file may not define all structures.  Please extend as required.
+
+  Copyright (c) 2014, 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.             
+
+**/
+
+#ifndef _PCIEXPRESS30_H_
+#define _PCIEXPRESS30_H_
+
+#include "PciExpress21.h"
+
+#define PCI_EXPRESS_EXTENDED_CAPABILITY_SECONDARY_PCIE_ID    0x0019
+#define PCI_EXPRESS_EXTENDED_CAPABILITY_SECONDARY_PCIE_VER1  0x1
+
+typedef struct {
+  PCI_EXPRESS_EXTENDED_CAPABILITIES_HEADER                Header;
+  UINT32                                                  LinkControl3;
+  UINT32                                                  LaneErrorStatus;
+  UINT16                                                  EqualizationControl[2];
+} PCI_EXPRESS_EXTENDED_CAPABILITIES_SECONDARY_PCIE;
+
+#endif