Add default implementation of EFI_CPU_IO_PPI and EFI_PCI_CFG2_PPI for EFI_SERVICES_TABLE.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9662 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Core/Pei/PciCfg2/PciCfg2.c

@@ -0,0 +1,128 @@
+/** @file
+  The default version of EFI_PEI_PCI_CFG2_PPI support published by PeiServices in
+  PeiCore initialization phase.
+ 
+  EFI_PEI_PCI_CFG2_PPI is installed by the PEIM which supports a PCI root bridge. 
+  When PeiCore is started, the default version of EFI_PEI_PCI_CFG2_PPI will be assigned 
+  to PeiServices table.
+  
+Copyright (c) 2009, 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.             
+
+**/
+
+#include "PeiMain.h"
+
+///
+/// This default instance of EFI_PEI_PCI_CFG2_PPI install assigned to EFI_PEI_SERVICE.PciCfg 
+/// when PeiCore's initialization.
+///
+EFI_PEI_PCI_CFG2_PPI gPeiDefaultPciCfg2Ppi = {
+  PeiDefaultPciCfg2Read,
+  PeiDefaultPciCfg2Write,
+  PeiDefaultPciCfg2Modify
+};
+
+/**
+  Reads from a given location in the PCI configuration space.
+
+  If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+  
+  @param  PeiServices     An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This            Pointer to local data for the interface.
+  @param  Width           The width of the access. Enumerated in bytes.
+                          See EFI_PEI_PCI_CFG_PPI_WIDTH above.
+  @param  Address         The physical address of the access. The format of
+                          the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.
+  @param  Buffer          A pointer to the buffer of data.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_INVALID_PARAMETER The invalid access width.
+  @retval EFI_NOT_YET_AVAILABLE If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM.
+  
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultPciCfg2Read (
+  IN CONST  EFI_PEI_SERVICES          **PeiServices,
+  IN CONST  EFI_PEI_PCI_CFG2_PPI      *This,
+  IN        EFI_PEI_PCI_CFG_PPI_WIDTH Width,
+  IN        UINT64                    Address,
+  IN OUT    VOID                      *Buffer
+  )
+{
+  return EFI_NOT_AVAILABLE_YET;
+}
+
+/**
+  Write to a given location in the PCI configuration space.
+
+  If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+  
+  @param  PeiServices     An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This            Pointer to local data for the interface.
+  @param  Width           The width of the access. Enumerated in bytes.
+                          See EFI_PEI_PCI_CFG_PPI_WIDTH above.
+  @param  Address         The physical address of the access. The format of
+                          the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.
+  @param  Buffer          A pointer to the buffer of data.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_INVALID_PARAMETER The invalid access width.
+  @retval EFI_NOT_YET_AVAILABLE If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM.
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultPciCfg2Write (
+  IN CONST  EFI_PEI_SERVICES          **PeiServices,
+  IN CONST  EFI_PEI_PCI_CFG2_PPI      *This,
+  IN        EFI_PEI_PCI_CFG_PPI_WIDTH Width,
+  IN        UINT64                    Address,
+  IN OUT    VOID                      *Buffer
+  )
+{
+  return EFI_NOT_AVAILABLE_YET;
+}  
+
+/**
+  This function performs a read-modify-write operation on the contents from a given
+  location in the PCI configuration space.
+  If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+
+  @param  PeiServices     An indirect pointer to the PEI Services Table
+                          published by the PEI Foundation.
+  @param  This            Pointer to local data for the interface.
+  @param  Width           The width of the access. Enumerated in bytes. Type
+                          EFI_PEI_PCI_CFG_PPI_WIDTH is defined in Read().
+  @param  Address         The physical address of the access.
+  @param  SetBits         Points to value to bitwise-OR with the read configuration value.
+                          The size of the value is determined by Width.
+  @param  ClearBits       Points to the value to negate and bitwise-AND with the read configuration value.
+                          The size of the value is determined by Width.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_INVALID_PARAMETER The invalid access width.
+  @retval EFI_NOT_YET_AVAILABLE If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM.
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultPciCfg2Modify (
+  IN CONST  EFI_PEI_SERVICES          **PeiServices,
+  IN CONST  EFI_PEI_PCI_CFG2_PPI      *This,
+  IN        EFI_PEI_PCI_CFG_PPI_WIDTH Width,
+  IN        UINT64                    Address,
+  IN        VOID                      *SetBits,
+  IN        VOID                      *ClearBits
+  )
+{
+  return EFI_NOT_AVAILABLE_YET;
+}