EdkCompatibilityPkg/Compatibility/PciCfgToPciCfg2Thunk/PciCfgToPciCfg2Thunk.c

   1 /*++
   2
   3 Copyright (c) 2006 - 2008 Intel Corporation. <BR>
   4 All rights reserved. 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 Module Name:
  12
  13   Variable.c
  14
  15 Abstract:
  16
  17   PEIM to provide the Variable functionality
  18
  19 --*/
  20
  21 #include <PiPei.h>
  22 #include <Ppi/PciCfg.h>
  23 #include <Ppi/PciCfg2.h>
  24 #include <Library/DebugLib.h>
  25
  26 //
  27 // Function Prototypes
  28 //
  29 EFI_STATUS
  30 EFIAPI
  31 PciCfgRead (
  32   IN EFI_PEI_SERVICES             **PeiServices,
  33   IN EFI_PEI_PCI_CFG_PPI          *This,
  34   IN EFI_PEI_PCI_CFG_PPI_WIDTH    Width,
  35   IN UINT64                       Address,
  36   IN OUT VOID                     *Buffer
  37   );
  38
  39 EFI_STATUS
  40 EFIAPI
  41 PciCfgWrite (
  42   IN EFI_PEI_SERVICES             **PeiServices,
  43   IN EFI_PEI_PCI_CFG_PPI          *This,
  44   IN EFI_PEI_PCI_CFG_PPI_WIDTH    Width,
  45   IN UINT64                       Address,
  46   IN OUT VOID                     *Buffer
  47   );
  48
  49 EFI_STATUS
  50 EFIAPI
  51 PciCfgModify (
  52   IN EFI_PEI_SERVICES             **PeiServices,
  53   IN EFI_PEI_PCI_CFG_PPI          *This,
  54   IN EFI_PEI_PCI_CFG_PPI_WIDTH    Width,
  55   IN UINT64                       Address,
  56   IN UINTN                        SetBits,
  57   IN UINTN                        ClearBits
  58   );
  59
  60 //
  61 // Module globals
  62 //
  63 EFI_PEI_PCI_CFG_PPI mPciCfgPpi = {
  64   PciCfgRead,
  65   PciCfgWrite,
  66   PciCfgModify,
  67 };
  68
  69 EFI_PEI_PPI_DESCRIPTOR     mPpiListPciCfg = {
  70   (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
  71   &gEfiPciCfgPpiInServiceTableGuid,
  72   &mPciCfgPpi
  73 };
  74
  75 EFI_STATUS
  76 EFIAPI
  77 PeimInitializePciCfg (
  78   IN EFI_FFS_FILE_HEADER     *FfsHeader,
  79   IN CONST EFI_PEI_SERVICES  **PeiServices
  80   )
  81 /*++
  82
  83 Routine Description:
  84
  85   Provide the functionality of the variable services.
  86
  87 Arguments:
  88
  89   FfsHeadher  - The FFS file header
  90   PeiServices - General purpose services available to every PEIM.
  91
  92 Returns:
  93
  94   Status -  EFI_SUCCESS if the interface could be successfully
  95             installed
  96
  97 --*/
  98 {
  99   //
 100   // Publish the variable capability to other modules
 101   //
 102   return (*PeiServices)->InstallPpi (PeiServices, &mPpiListPciCfg);
 103 }
 104
 105 EFI_STATUS
 106 EFIAPI
 107 PciCfgRead (
 108   IN EFI_PEI_SERVICES             **PeiServices,
 109   IN EFI_PEI_PCI_CFG_PPI          *This,
 110   IN EFI_PEI_PCI_CFG_PPI_WIDTH    Width,
 111   IN UINT64                       Address,
 112   IN OUT VOID                     *Buffer
 113   )
 114 {
 115   EFI_PEI_PCI_CFG2_PPI  *PciCfg2;
 116
 117   PciCfg2 = (*PeiServices)->PciCfg;
 118
 119   return PciCfg2->Read ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, Buffer);
 120 }
 121
 122 EFI_STATUS
 123 EFIAPI
 124 PciCfgWrite (
 125   IN EFI_PEI_SERVICES             **PeiServices,
 126   IN EFI_PEI_PCI_CFG_PPI          *This,
 127   IN EFI_PEI_PCI_CFG_PPI_WIDTH    Width,
 128   IN UINT64                       Address,
 129   IN OUT VOID                     *Buffer
 130   )
 131 {
 132   EFI_PEI_PCI_CFG2_PPI  *PciCfg2;
 133
 134   PciCfg2 = (*PeiServices)->PciCfg;
 135
 136   return PciCfg2->Write ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, Buffer);
 137 }
 138
 139 EFI_STATUS
 140 EFIAPI
 141 PciCfgModify (
 142   IN EFI_PEI_SERVICES             **PeiServices,
 143   IN EFI_PEI_PCI_CFG_PPI          *This,
 144   IN EFI_PEI_PCI_CFG_PPI_WIDTH    Width,
 145   IN UINT64                       Address,
 146   IN UINTN                        SetBits,
 147   IN UINTN                        ClearBits
 148   )
 149 {
 150   EFI_PEI_PCI_CFG2_PPI  *PciCfg2;
 151
 152   PciCfg2 = (*PeiServices)->PciCfg;
 153
 154   return PciCfg2->Modify ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, &SetBits, &ClearBits);
 155 }