1 /** @file
2 The default version of EFI_PEI_PCI_CFG2_PPI support published by PeiServices in
3 PeiCore initialization phase.
4
5 EFI_PEI_PCI_CFG2_PPI is installed by the PEIM which supports a PCI root bridge.
6 When PeiCore is started, the default version of EFI_PEI_PCI_CFG2_PPI will be assigned
7 to PeiServices table.
8
9 Copyright (c) 2009, Intel Corporation. All rights reserved.<BR>
10 This program and the accompanying materials
11 are licensed and made available under the terms and conditions of the BSD License
12 which accompanies this distribution. The full text of the license may be found at
13 http://opensource.org/licenses/bsd-license.php
14
15 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
16 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
17
18 **/
19
20 #include "PeiMain.h"
21
22 ///
23 /// This default instance of EFI_PEI_PCI_CFG2_PPI install assigned to EFI_PEI_SERVICE.PciCfg
24 /// when PeiCore's initialization.
25 ///
26 EFI_PEI_PCI_CFG2_PPI gPeiDefaultPciCfg2Ppi = {
27 PeiDefaultPciCfg2Read,
28 PeiDefaultPciCfg2Write,
29 PeiDefaultPciCfg2Modify
30 };
31
32 /**
33 Reads from a given location in the PCI configuration space.
34
35 If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM, then
36 return EFI_NOT_YET_AVAILABLE.
37
38 @param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
39 @param This Pointer to local data for the interface.
40 @param Width The width of the access. Enumerated in bytes.
41 See EFI_PEI_PCI_CFG_PPI_WIDTH above.
42 @param Address The physical address of the access. The format of
43 the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.
44 @param Buffer A pointer to the buffer of data.
45
46 @retval EFI_SUCCESS The function completed successfully.
47 @retval EFI_INVALID_PARAMETER The invalid access width.
48 @retval EFI_NOT_YET_AVAILABLE If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM.
49
50 **/
51 EFI_STATUS
52 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)53 PeiDefaultPciCfg2Read (
54 IN CONST EFI_PEI_SERVICES **PeiServices,
55 IN CONST EFI_PEI_PCI_CFG2_PPI *This,
56 IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
57 IN UINT64 Address,
58 IN OUT VOID *Buffer
59 )
60 {
61 return EFI_NOT_AVAILABLE_YET;
62 }
63
64 /**
65 Write to a given location in the PCI configuration space.
66
67 If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM, then
68 return EFI_NOT_YET_AVAILABLE.
69
70 @param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
71 @param This Pointer to local data for the interface.
72 @param Width The width of the access. Enumerated in bytes.
73 See EFI_PEI_PCI_CFG_PPI_WIDTH above.
74 @param Address The physical address of the access. The format of
75 the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.
76 @param Buffer A pointer to the buffer of data.
77
78 @retval EFI_SUCCESS The function completed successfully.
79 @retval EFI_INVALID_PARAMETER The invalid access width.
80 @retval EFI_NOT_YET_AVAILABLE If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM.
81 **/
82 EFI_STATUS
83 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)84 PeiDefaultPciCfg2Write (
85 IN CONST EFI_PEI_SERVICES **PeiServices,
86 IN CONST EFI_PEI_PCI_CFG2_PPI *This,
87 IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
88 IN UINT64 Address,
89 IN OUT VOID *Buffer
90 )
91 {
92 return EFI_NOT_AVAILABLE_YET;
93 }
94
95 /**
96 This function performs a read-modify-write operation on the contents from a given
97 location in the PCI configuration space.
98 If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM, then
99 return EFI_NOT_YET_AVAILABLE.
100
101 @param PeiServices An indirect pointer to the PEI Services Table
102 published by the PEI Foundation.
103 @param This Pointer to local data for the interface.
104 @param Width The width of the access. Enumerated in bytes. Type
105 EFI_PEI_PCI_CFG_PPI_WIDTH is defined in Read().
106 @param Address The physical address of the access.
107 @param SetBits Points to value to bitwise-OR with the read configuration value.
108 The size of the value is determined by Width.
109 @param ClearBits Points to the value to negate and bitwise-AND with the read configuration value.
110 The size of the value is determined by Width.
111
112 @retval EFI_SUCCESS The function completed successfully.
113 @retval EFI_INVALID_PARAMETER The invalid access width.
114 @retval EFI_NOT_YET_AVAILABLE If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM.
115 **/
116 EFI_STATUS
117 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)118 PeiDefaultPciCfg2Modify (
119 IN CONST EFI_PEI_SERVICES **PeiServices,
120 IN CONST EFI_PEI_PCI_CFG2_PPI *This,
121 IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
122 IN UINT64 Address,
123 IN VOID *SetBits,
124 IN VOID *ClearBits
125 )
126 {
127 return EFI_NOT_AVAILABLE_YET;
128 }
129