/** @file | |
This file declares the PciCfg PPI used to access the 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 |