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1 /** @file
2 Support for the PCI Express 3.1 standard.
3
4 This header file may not define all structures. Please extend as required.
5
6 Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
7 SPDX-License-Identifier: BSD-2-Clause-Patent
8
9 **/
10
11 #ifndef _PCIEXPRESS31_H_
12 #define _PCIEXPRESS31_H_
13
14 #include <IndustryStandard/PciExpress30.h>
15
16 #pragma pack(1)
17
18 #define PCI_EXPRESS_EXTENDED_CAPABILITY_L1_PM_SUBSTATES_ID 0x001E
19 #define PCI_EXPRESS_EXTENDED_CAPABILITY_L1_PM_SUBSTATES_VER1 0x1
20
21 typedef union {
22 struct {
23 UINT32 PciPmL12 : 1;
24 UINT32 PciPmL11 : 1;
25 UINT32 AspmL12 : 1;
26 UINT32 AspmL11 : 1;
27 UINT32 L1PmSubstates : 1;
28 UINT32 Reserved : 3;
29 UINT32 CommonModeRestoreTime : 8;
30 UINT32 TPowerOnScale : 2;
31 UINT32 Reserved2 : 1;
32 UINT32 TPowerOnValue : 5;
33 UINT32 Reserved3 : 8;
34 } Bits;
35 UINT32 Uint32;
36 } PCI_EXPRESS_REG_L1_PM_SUBSTATES_CAPABILITY;
37
38 typedef union {
39 struct {
40 UINT32 PciPmL12 : 1;
41 UINT32 PciPmL11 : 1;
42 UINT32 AspmL12 : 1;
43 UINT32 AspmL11 : 1;
44 UINT32 Reserved : 4;
45 UINT32 CommonModeRestoreTime : 8;
46 UINT32 LtrL12ThresholdValue : 10;
47 UINT32 Reserved2 : 3;
48 UINT32 LtrL12ThresholdScale : 3;
49 } Bits;
50 UINT32 Uint32;
51 } PCI_EXPRESS_REG_L1_PM_SUBSTATES_CONTROL1;
52
53 typedef union {
54 struct {
55 UINT32 TPowerOnScale : 2;
56 UINT32 Reserved : 1;
57 UINT32 TPowerOnValue : 5;
58 UINT32 Reserved2 : 24;
59 } Bits;
60 UINT32 Uint32;
61 } PCI_EXPRESS_REG_L1_PM_SUBSTATES_CONTROL2;
62
63 typedef struct {
64 PCI_EXPRESS_EXTENDED_CAPABILITIES_HEADER Header;
65 PCI_EXPRESS_REG_L1_PM_SUBSTATES_CAPABILITY Capability;
66 PCI_EXPRESS_REG_L1_PM_SUBSTATES_CONTROL1 Control1;
67 PCI_EXPRESS_REG_L1_PM_SUBSTATES_CONTROL2 Control2;
68 } PCI_EXPRESS_EXTENDED_CAPABILITIES_L1_PM_SUBSTATES;
69
70 #pragma pack()
71
72 #endif