2 This file declares PciCfg PPI used to access PCI configuration space in PEI
4 Copyright (c) 2006, Intel Corporation
5 All rights reserved. This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. 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.
15 @par Revision Reference:
16 This PPI is defined in PEI CIS
21 #ifndef __PEI_PCI_CFG_H__
22 #define __PEI_PCI_CFG_H__
24 #include <Pi/PiPeiCis.h>
26 // Get the common definitions for EFI_PEI_PCI_CFG_PPI_WIDTH.
28 #include <Ppi/PciCfg2.h>
30 #define EFI_PEI_PCI_CFG_PPI_INSTALLED_GUID \
32 0xe1f2eba0, 0xf7b9, 0x4a26, {0x86, 0x20, 0x13, 0x12, 0x21, 0x64, 0x2a, 0x90 } \
35 typedef struct _EFI_PEI_PCI_CFG_PPI EFI_PEI_PCI_CFG_PPI
;
37 #define PEI_PCI_CFG_ADDRESS(bus, dev, func, reg) ( \
38 (UINT64) ((((UINTN) bus) << 24) + (((UINTN) dev) << 16) + (((UINTN) func) << 8) + ((UINTN) reg)) \
39 ) & 0x00000000ffffffff
42 PCI read and write operation.
44 @param PeiServices An indirect pointer to the PEI Services Table
45 published by the PEI Foundation.
46 @param This Pointer to local data for the interface.
47 @param Width The width of the access. Enumerated in bytes.
48 @param Address The physical address of the access.
49 @param Buffer A pointer to the buffer of data.
51 @retval EFI_SUCCESS The function completed successfully.
52 @retval EFI_NOT_YET_AVAILABLE The service has not been installed.
57 (EFIAPI
*EFI_PEI_PCI_CFG_PPI_IO
)(
58 IN EFI_PEI_SERVICES
**PeiServices
,
59 IN EFI_PEI_PCI_CFG_PPI
*This
,
60 IN EFI_PEI_PCI_CFG_PPI_WIDTH Width
,
66 PCI read-modify-write operation.
68 @param PeiServices An indirect pointer to the PEI Services Table
69 published by the PEI Foundation.
70 @param This Pointer to local data for the interface.
71 @param Width The width of the access. Enumerated in bytes.
72 @param Address The physical address of the access.
73 @param SetBits Value of the bits to set.
74 @param ClearBits Value of the bits to clear.
76 @retval EFI_SUCCESS The function completed successfully.
81 (EFIAPI
*EFI_PEI_PCI_CFG_PPI_RW
)(
82 IN EFI_PEI_SERVICES
**PeiServices
,
83 IN EFI_PEI_PCI_CFG_PPI
*This
,
84 IN EFI_PEI_PCI_CFG_PPI_WIDTH Width
,
91 The EFI_PEI_PCI_CFG_PPI interfaces are used to abstract accesses to PCI
92 controllers behind a PCI root bridge controller.
95 PCI read services. See the Read() function description.
98 PCI write services. See the Write() function description.
101 PCI read-modify-write services. See the Modify() function description.
104 struct _EFI_PEI_PCI_CFG_PPI
{
105 EFI_PEI_PCI_CFG_PPI_IO Read
;
106 EFI_PEI_PCI_CFG_PPI_IO Write
;
107 EFI_PEI_PCI_CFG_PPI_RW Modify
;
110 extern EFI_GUID gEfiPciCfgPpiInServiceTableGuid
;