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/** @file
This file declares PciCfg PPI used to access PCI configuration space in PEI
Copyright (c) 2006 - 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.
@par Revision Reference:
This PPI is defined in PEI CIS
Version 0.91.
**/
#ifndef __PEI_PCI_CFG_H__
#define __PEI_PCI_CFG_H__
#include <Ppi/PciCfg2.h>
//
// Get the common definitions for EFI_PEI_PCI_CFG_PPI_WIDTH.
//
#define EFI_PEI_PCI_CFG_PPI_INSTALLED_GUID \
{ \
0xe1f2eba0, 0xf7b9, 0x4a26, {0x86, 0x20, 0x13, 0x12, 0x21, 0x64, 0x2a, 0x90 } \
}
typedef struct _EFI_PEI_PCI_CFG_PPI EFI_PEI_PCI_CFG_PPI;
#define PEI_PCI_CFG_ADDRESS(bus, dev, func, reg) ( \
(UINT64) ((((UINTN) bus) << 24) + (((UINTN) dev) << 16) + (((UINTN) func) << 8) + ((UINTN) reg)) \
) & 0x00000000ffffffff
/**
PCI read and write operation.
@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.
@param Address The physical address of the access.
@param Buffer A pointer to the buffer of data.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_NOT_YET_AVAILABLE The service has not been installed.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_PEI_PCI_CFG_PPI_IO)(
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_PCI_CFG_PPI *This,
IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
IN UINT64 Address,
IN OUT VOID *Buffer
);
/**
PCI read-modify-write operation.
@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.
@param Address The physical address of the access.
@param SetBits Value of the bits to set.
@param ClearBits Value of the bits to clear.
@retval EFI_SUCCESS The function completed successfully.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_PEI_PCI_CFG_PPI_RW)(
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_PCI_CFG_PPI *This,
IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
IN UINT64 Address,
IN UINTN SetBits,
IN UINTN ClearBits
);
/**
The EFI_PEI_PCI_CFG_PPI interfaces are used to abstract accesses to PCI
controllers behind a PCI root bridge controller.
**/
struct _EFI_PEI_PCI_CFG_PPI {
///
/// PCI read services. See the Read() function description.
///
EFI_PEI_PCI_CFG_PPI_IO Read;
///
/// PCI write services. See the Write() function description.
///
EFI_PEI_PCI_CFG_PPI_IO Write;
///
/// PCI read-modify-write services. See the Modify() function description.
///
EFI_PEI_PCI_CFG_PPI_RW Modify;
};
extern EFI_GUID gEfiPciCfgPpiInServiceTableGuid;
#endif
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