MdePkg/Include/IndustryStandard/PciExpress31.h

   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 This program and the accompanying materials
   8 are licensed and made available under the terms and conditions of the BSD License
   9 which accompanies this distribution.  The full text of the license may be found at
  10 http://opensource.org/licenses/bsd-license.php
  11
  12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  14
  15 **/
  16
  17 #ifndef _PCIEXPRESS31_H_
  18 #define _PCIEXPRESS31_H_
  19
  20 #include <IndustryStandard/PciExpress30.h>
  21
  22 #pragma pack(1)
  23
  24 #define PCI_EXPRESS_EXTENDED_CAPABILITY_L1_PM_SUBSTATES_ID    0x001E
  25 #define PCI_EXPRESS_EXTENDED_CAPABILITY_L1_PM_SUBSTATES_VER1  0x1
  26
  27 typedef union {
  28   struct {
  29     UINT32 PciPmL12 : 1;
  30     UINT32 PciPmL11 : 1;
  31     UINT32 AspmL12 : 1;
  32     UINT32 AspmL11 : 1;
  33     UINT32 L1PmSubstates : 1;
  34     UINT32 Reserved : 3;
  35     UINT32 CommonModeRestoreTime : 8;
  36     UINT32 TPowerOnScale : 2;
  37     UINT32 Reserved2 : 1;
  38     UINT32 TPowerOnValue : 5;
  39     UINT32 Reserved3 : 8;
  40   } Bits;
  41   UINT32   Uint32;
  42 } PCI_EXPRESS_REG_L1_PM_SUBSTATES_CAPABILITY;
  43
  44 typedef union {
  45   struct {
  46     UINT32 PciPmL12 : 1;
  47     UINT32 PciPmL11 : 1;
  48     UINT32 AspmL12 : 1;
  49     UINT32 AspmL11 : 1;
  50     UINT32 Reserved : 4;
  51     UINT32 CommonModeRestoreTime : 8;
  52     UINT32 LtrL12ThresholdValue : 10;
  53     UINT32 Reserved2 : 3;
  54     UINT32 LtrL12ThresholdScale : 3;
  55   } Bits;
  56   UINT32   Uint32;
  57 } PCI_EXPRESS_REG_L1_PM_SUBSTATES_CONTROL1;
  58
  59 typedef union {
  60   struct {
  61     UINT32 TPowerOnScale : 2;
  62     UINT32 Reserved : 1;
  63     UINT32 TPowerOnValue : 5;
  64     UINT32 Reserved2 : 24;
  65   } Bits;
  66   UINT32   Uint32;
  67 } PCI_EXPRESS_REG_L1_PM_SUBSTATES_CONTROL2;
  68
  69 typedef struct {
  70   PCI_EXPRESS_EXTENDED_CAPABILITIES_HEADER   Header;
  71   PCI_EXPRESS_REG_L1_PM_SUBSTATES_CAPABILITY Capability;
  72   PCI_EXPRESS_REG_L1_PM_SUBSTATES_CONTROL1   Control1;
  73   PCI_EXPRESS_REG_L1_PM_SUBSTATES_CONTROL2   Control2;
  74 } PCI_EXPRESS_EXTENDED_CAPABILITIES_L1_PM_SUBSTATES;
  75
  76 #pragma pack()
  77
  78 #endif