2 This file declares the PciCfg PPI used to access the PCI configuration space in PEI
4 Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
5 This program and the accompanying materials are licensed and made available under
6 the terms and conditions of the BSD License that accompanies this distribution.
7 The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php.
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
13 @par Revision Reference:
14 This PPI is defined in PEI CIS
19 #ifndef __PEI_PCI_CFG_H__
20 #define __PEI_PCI_CFG_H__
22 #include <Ppi/PciCfg2.h>
24 // Get the common definitions for EFI_PEI_PCI_CFG_PPI_WIDTH.
27 #define EFI_PEI_PCI_CFG_PPI_INSTALLED_GUID \
29 0xe1f2eba0, 0xf7b9, 0x4a26, {0x86, 0x20, 0x13, 0x12, 0x21, 0x64, 0x2a, 0x90 } \
32 typedef struct _EFI_PEI_PCI_CFG_PPI EFI_PEI_PCI_CFG_PPI
;
34 #define PEI_PCI_CFG_ADDRESS(bus, dev, func, reg) ( \
35 (UINT64) ((((UINTN) bus) << 24) + (((UINTN) dev) << 16) + (((UINTN) func) << 8) + ((UINTN) reg)) \
36 ) & 0x00000000ffffffff
39 PCI read and write operation.
41 @param PeiServices An indirect pointer to the PEI Services Table
42 published by the PEI Foundation.
43 @param This Pointer to local data for the interface.
44 @param Width The width of the access. Enumerated in bytes.
45 @param Address The physical address of the access.
46 @param Buffer A pointer to the buffer of data.
48 @retval EFI_SUCCESS The function completed successfully.
49 @retval EFI_NOT_YET_AVAILABLE The service has not been installed.
54 (EFIAPI
*EFI_PEI_PCI_CFG_PPI_IO
)(
55 IN EFI_PEI_SERVICES
**PeiServices
,
56 IN EFI_PEI_PCI_CFG_PPI
*This
,
57 IN EFI_PEI_PCI_CFG_PPI_WIDTH Width
,
63 PCI read-modify-write operation.
65 @param PeiServices An indirect pointer to the PEI Services Table
66 published by the PEI Foundation.
67 @param This The pointer to local data for the interface.
68 @param Width The width of the access. Enumerated in bytes.
69 @param Address The physical address of the access.
70 @param SetBits Value of the bits to set.
71 @param ClearBits Value of the bits to clear.
73 @retval EFI_SUCCESS The function completed successfully.
78 (EFIAPI
*EFI_PEI_PCI_CFG_PPI_RW
)(
79 IN EFI_PEI_SERVICES
**PeiServices
,
80 IN EFI_PEI_PCI_CFG_PPI
*This
,
81 IN EFI_PEI_PCI_CFG_PPI_WIDTH Width
,
88 The EFI_PEI_PCI_CFG_PPI interfaces are used to abstract accesses to PCI
89 controllers behind a PCI root bridge controller.
91 struct _EFI_PEI_PCI_CFG_PPI
{
93 /// PCI read services. See the Read() function description.
95 EFI_PEI_PCI_CFG_PPI_IO Read
;
98 /// PCI write services. See the Write() function description.
100 EFI_PEI_PCI_CFG_PPI_IO Write
;
103 /// PCI read-modify-write services. See the Modify() function description.
105 EFI_PEI_PCI_CFG_PPI_RW Modify
;
108 extern EFI_GUID gEfiPciCfgPpiInServiceTableGuid
;