EdkCompatibilityPkg/Compatibility/Include/Ppi/EcpPciCfg.h

   1 /** @file
   2 This PPI is the same as the PPI in the framework PciCfg, with one exception.
   3 Specifically, this PPI does not include a modify API, while the PPI in the framework PciCfg does.
   4
   5 Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved.<BR>
   6 This program and the accompanying materials
   7 are licensed and made available under the terms and conditions of the BSD License
   8 which accompanies this distribution.  The full text of the license may be found at
   9 http://opensource.org/licenses/bsd-license.php.
  10
  11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 #ifndef _PEI_PCI_CFG_H_
  17 #define _PEI_PCI_CFG_H_
  18
  19 #include <Ppi/PciCfg.h>
  20
  21 #define ECP_PEI_PCI_CFG_PPI_GUID \
  22   {0xb0ee53d4, 0xa049, 0x4a79, { 0xb2, 0xff, 0x19, 0xd9, 0xfa, 0xef, 0xaa, 0x94}}
  23
  24 typedef struct _ECP_PEI_PCI_CFG_PPI ECP_PEI_PCI_CFG_PPI;
  25
  26 /**
  27   A PCI read and write operation.
  28
  29   Writes to, or reads from, a given location in the PCI configuration space.
  30
  31   @param  PeiServices              An indirect pointer to the PEI Services Table
  32                                    published by the PEI Foundation.
  33   @param  This                     The pointer to local data for the interface.
  34   @param  Width                    The width of the access. Enumerated in bytes.
  35   @param  Address                  The physical address of the access. The format of
  36                                    the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.
  37   @param  Buffer                   A pointer to the buffer of data.
  38   @retval EFI_SUCCESS              The function completed successfully.
  39   @retval EFI_DEVICE_ERROR         There was a problem with the transaction.
  40   @retval EFI_DEVICE_NOT_READY     The device is not capable of supporting the
  41                                    operation at this time.
  42 **/
  43 typedef
  44 EFI_STATUS
  45 (EFIAPI *ECP_PEI_PCI_CFG_PPI_IO)(
  46   IN EFI_PEI_SERVICES         **PeiServices,
  47   IN EFI_PEI_PCI_CFG_PPI      * This,
  48   IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
  49   IN UINT64                   Address,
  50   IN OUT VOID                 *Buffer
  51   );
  52
  53 struct _ECP_PEI_PCI_CFG_PPI {
  54   ECP_PEI_PCI_CFG_PPI_IO  Read;
  55   ECP_PEI_PCI_CFG_PPI_IO  Write;
  56 };
  57
  58 extern EFI_GUID gEcpPeiPciCfgPpiGuid;
  59
  60 #endif