EdkCompatibilityPkg/Compatibility/Include/Ppi/EcpPciCfg.h

   1 /** @file
   2 This PPI which is same with PciCfg PPI. But Modify API is removed.
   3
   4 Copyright (c) 2008, Intel Corporation
   5 All rights reserved. This program and the accompanying materials
   6 are licensed and made available under the terms and conditions of the BSD License
   7 which accompanies this distribution.  The full text of the license may be found at
   8 http://opensource.org/licenses/bsd-license.php
   9
  10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #ifndef _PEI_PCI_CFG_H_
  16 #define _PEI_PCI_CFG_H_
  17
  18 #include <Ppi/PciCfg.h>
  19
  20 #define ECP_PEI_PCI_CFG_PPI_GUID \
  21   {0xb0ee53d4, 0xa049, 0x4a79, { 0xb2, 0xff, 0x19, 0xd9, 0xfa, 0xef, 0xaa, 0x94}}
  22
  23 typedef struct _ECP_PEI_PCI_CFG_PPI ECP_PEI_PCI_CFG_PPI;
  24
  25 /**
  26   PCI read and write operation.
  27
  28   Write to/read from a given location in the PCI configuration space.
  29
  30   @param  PeiServices                   An indirect pointer to the PEI Services Table published by the PEI Foundation.
  31   @param  This                              Pointer to local data for the interface.
  32   @param  Width                            The width of the access. Enumerated in bytes.
  33                                                     See EFI_PEI_PCI_CFG_PPI_WIDTH above.
  34   @param  Address                         The physical address of the access. The format of
  35                                                     the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.
  36   @param  Buffer                            A pointer to the buffer of data..
  37   @retval EFI_SUCCESS                   The function completed successfully.
  38   @retval EFI_DEVICE_ERROR          There was a problem with the transaction.
  39   @retval EFI_DEVICE_NOT_READY  The device is not capable of supporting the operation at this
  40                                                  time.
  41 **/
  42 typedef
  43 EFI_STATUS
  44 (EFIAPI *ECP_PEI_PCI_CFG_PPI_IO) (
  45   IN EFI_PEI_SERVICES         **PeiServices,
  46   IN EFI_PEI_PCI_CFG_PPI      * This,
  47   IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
  48   IN UINT64                   Address,
  49   IN OUT VOID                 *Buffer
  50   );
  51
  52 /**
  53   The ECP_PEI_PCI_CFG_PPI interfaces are used to abstract accesses to PCI
  54   controllers behind a PCI root bridge controller.
  55   @param Read
  56   PCI read services.  See the Read() function description.
  57   @param Write
  58   PCI write services.  See the Write() function description.
  59
  60 **/
  61
  62 struct _ECP_PEI_PCI_CFG_PPI {
  63   ECP_PEI_PCI_CFG_PPI_IO  Read;
  64   ECP_PEI_PCI_CFG_PPI_IO  Write;
  65 };
  66
  67 extern EFI_GUID gEcpPeiPciCfgPpiGuid;
  68
  69 #endif