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 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