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/** @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 - 2016, Intel Corporation. All rights reserved.<BR>
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;
}
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