mirror of https://github.com/acidanthera/audk.git
123 lines
4.9 KiB
C
123 lines
4.9 KiB
C
/** @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;
|
|
}
|