mirror of https://github.com/acidanthera/audk.git
308 lines
11 KiB
C
308 lines
11 KiB
C
/**
|
|
Module produce PciCfgPpi on top of PciCfgPpi2.
|
|
|
|
PIWG's PI specification replaces Inte's EFI Specification 1.10.
|
|
EFI_PEI_PCI_CFG_PPI defined in Inte's EFI Specification 1.10 is replaced by
|
|
EFI_PEI_PCI_CFG2_PPI in PI 1.0.
|
|
This module produces PciCfgPpi on top of PciCfgPpi2. This module is used on platform when both of
|
|
these two conditions are true:
|
|
1) Framework module is present that consumes PCI CFG AND
|
|
2) R9 module is present that produces PCI CFG2 but not PCI CFG
|
|
|
|
|
|
Copyright (c) 2006 - 2008 Intel Corporation. <BR>
|
|
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.
|
|
Module Name:
|
|
**/
|
|
|
|
#include <PiPei.h>
|
|
#include <Ppi/PciCfg.h>
|
|
#include <Ppi/PciCfg2.h>
|
|
#include <Library/DebugLib.h>
|
|
|
|
//
|
|
// Function Prototypes
|
|
//
|
|
|
|
/**
|
|
Reads from a given location in the PCI configuration space.
|
|
|
|
@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_DEVICE_ERROR There was a problem with the transaction.
|
|
|
|
@retval EFI_DEVICE_NOT_READY The device is not capable of supporting the operation at this
|
|
time.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciCfgRead (
|
|
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
|
|
);
|
|
|
|
/**
|
|
Write to a given location in the PCI configuration space.
|
|
|
|
@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_DEVICE_ERROR There was a problem with the transaction.
|
|
|
|
@retval EFI_DEVICE_NOT_READY The device is not capable of supporting the operation at this
|
|
time.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciCfgWrite (
|
|
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. 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_DEVICE_ERROR There was a problem with the transaction.
|
|
|
|
@retval EFI_DEVICE_NOT_READY The device is not capable of supporting
|
|
the operation at this time.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciCfgModify (
|
|
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
|
|
);
|
|
|
|
//
|
|
// Module globals
|
|
//
|
|
EFI_PEI_PCI_CFG_PPI mPciCfgPpi = {
|
|
PciCfgRead,
|
|
PciCfgWrite,
|
|
PciCfgModify,
|
|
};
|
|
|
|
EFI_PEI_PPI_DESCRIPTOR mPpiListPciCfg = {
|
|
(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
|
|
&gEfiPciCfgPpiInServiceTableGuid,
|
|
&mPciCfgPpi
|
|
};
|
|
|
|
/**
|
|
|
|
Standard PEIM entry point.
|
|
|
|
@param FfsHeadher The FFS file header
|
|
@param PeiServices General purpose services available to every PEIM.
|
|
|
|
|
|
@retval EFI_SUCCESS if the interface could be successfully
|
|
installed
|
|
|
|
--*/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PeimInitializePciCfg (
|
|
IN EFI_PEI_FILE_HANDLE FfsHeader,
|
|
IN CONST EFI_PEI_SERVICES **PeiServices
|
|
)
|
|
{
|
|
//
|
|
// Publish the PciCfgToPciCfg2 Thunk capability to other modules
|
|
//
|
|
return (*PeiServices)->InstallPpi (PeiServices, &mPpiListPciCfg);
|
|
}
|
|
|
|
/**
|
|
Reads from a given location in the PCI configuration space.
|
|
|
|
@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_DEVICE_ERROR There was a problem with the transaction.
|
|
|
|
@retval EFI_DEVICE_NOT_READY The device is not capable of supporting the operation at this
|
|
time.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciCfgRead (
|
|
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
|
|
)
|
|
{
|
|
EFI_PEI_PCI_CFG2_PPI *PciCfg2;
|
|
|
|
PciCfg2 = (*PeiServices)->PciCfg;
|
|
|
|
return PciCfg2->Read ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, Buffer);
|
|
}
|
|
|
|
|
|
/**
|
|
Write to a given location in the PCI configuration space.
|
|
|
|
@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_DEVICE_ERROR There was a problem with the transaction.
|
|
|
|
@retval EFI_DEVICE_NOT_READY The device is not capable of supporting the operation at this
|
|
time.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciCfgWrite (
|
|
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
|
|
)
|
|
{
|
|
EFI_PEI_PCI_CFG2_PPI *PciCfg2;
|
|
|
|
PciCfg2 = (*PeiServices)->PciCfg;
|
|
|
|
return PciCfg2->Write ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, 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. 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_DEVICE_ERROR There was a problem with the transaction.
|
|
|
|
@retval EFI_DEVICE_NOT_READY The device is not capable of supporting
|
|
the operation at this time.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciCfgModify (
|
|
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
|
|
)
|
|
{
|
|
EFI_PEI_PCI_CFG2_PPI *PciCfg2;
|
|
|
|
PciCfg2 = (*PeiServices)->PciCfg;
|
|
|
|
return PciCfg2->Modify ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, &SetBits, &ClearBits);
|
|
}
|