/** @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 - 2018, Intel Corporation. All rights reserved.<BR> | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#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; | |
} |