MdePkg/Include/IndustryStandard/PciExpress30.h

   1 /** @file
   2   Support for the PCI Express 3.0 standard.
   3
   4   This header file may not define all structures.  Please extend as required.
   5
   6   Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR>
   7   SPDX-License-Identifier: BSD-2-Clause-Patent
   8
   9 **/
  10
  11 #ifndef _PCIEXPRESS30_H_
  12 #define _PCIEXPRESS30_H_
  13
  14 #include <IndustryStandard/PciExpress21.h>
  15
  16 #pragma pack(1)
  17
  18 #define PCI_EXPRESS_EXTENDED_CAPABILITY_SECONDARY_PCIE_ID    0x0019
  19 #define PCI_EXPRESS_EXTENDED_CAPABILITY_SECONDARY_PCIE_VER1  0x1
  20
  21 typedef union {
  22   struct {
  23     UINT32    PerformEqualization                    : 1;
  24     UINT32    LinkEqualizationRequestInterruptEnable : 1;
  25     UINT32    Reserved                               : 30;
  26   } Bits;
  27   UINT32    Uint32;
  28 } PCI_EXPRESS_REG_LINK_CONTROL3;
  29
  30 typedef union {
  31   struct {
  32     UINT16    DownstreamPortTransmitterPreset  : 4;
  33     UINT16    DownstreamPortReceiverPresetHint : 3;
  34     UINT16    Reserved                         : 1;
  35     UINT16    UpstreamPortTransmitterPreset    : 4;
  36     UINT16    UpstreamPortReceiverPresetHint   : 3;
  37     UINT16    Reserved2                        : 1;
  38   } Bits;
  39   UINT16    Uint16;
  40 } PCI_EXPRESS_REG_LANE_EQUALIZATION_CONTROL;
  41
  42 typedef struct {
  43   PCI_EXPRESS_EXTENDED_CAPABILITIES_HEADER     Header;
  44   PCI_EXPRESS_REG_LINK_CONTROL3                LinkControl3;
  45   UINT32                                       LaneErrorStatus;
  46   PCI_EXPRESS_REG_LANE_EQUALIZATION_CONTROL    EqualizationControl[2];
  47 } PCI_EXPRESS_EXTENDED_CAPABILITIES_SECONDARY_PCIE;
  48
  49 #pragma pack()
  50
  51 #endif