OvmfPkg/Include/IndustryStandard/QemuPciBridgeCapabilities.h

   1 /** @file
   2   Macro and type definitions for QEMU's Red Hat vendor-specific PCI
   3   capabilities that provide various hints about PCI Bridges.
   4
   5   Refer to "docs/pcie_pci_bridge.txt" in the QEMU source directory.
   6
   7   Copyright (C) 2017, Red Hat, Inc.
   8
   9   This program and the accompanying materials are licensed and made available
  10   under the terms and conditions of the BSD License which accompanies this
  11   distribution. The full text of the license may be found at
  12   http://opensource.org/licenses/bsd-license.php
  13
  14   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
  15   WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  16 **/
  17
  18 #ifndef __QEMU_PCI_BRIDGE_CAPABILITIES_H__
  19 #define __QEMU_PCI_BRIDGE_CAPABILITIES_H__
  20
  21 #include <IndustryStandard/Pci23.h>
  22
  23 //
  24 // The hints apply to PCI Bridges whose PCI_DEVICE_INDEPENDENT_REGION.VendorId
  25 // equals the following value.
  26 //
  27 #define QEMU_PCI_BRIDGE_VENDOR_ID_REDHAT 0x1B36
  28
  29 //
  30 // Common capability header for all hints.
  31 //
  32 #pragma pack (1)
  33 typedef struct {
  34   EFI_PCI_CAPABILITY_VENDOR_HDR VendorHdr;
  35   UINT8                         Type;
  36 } QEMU_PCI_BRIDGE_CAPABILITY_HDR;
  37 #pragma pack ()
  38
  39 //
  40 // Values defined for QEMU_PCI_BRIDGE_CAPABILITY_HDR.Type.
  41 //
  42 #define QEMU_PCI_BRIDGE_CAPABILITY_TYPE_RESOURCE_RESERVATION 0x01
  43
  44 //
  45 // PCI Resource Reservation structure for when
  46 // QEMU_PCI_BRIDGE_CAPABILITY_HDR.Type equals
  47 // QEMU_PCI_BRIDGE_CAPABILITY_TYPE_RESOURCE_RESERVATION.
  48 //
  49 #pragma pack (1)
  50 typedef struct {
  51   QEMU_PCI_BRIDGE_CAPABILITY_HDR BridgeHdr;
  52   UINT32                         BusNumbers;
  53   UINT64                         Io;
  54   UINT32                         NonPrefetchable32BitMmio;
  55   UINT32                         Prefetchable32BitMmio;
  56   UINT64                         Prefetchable64BitMmio;
  57 } QEMU_PCI_BRIDGE_CAPABILITY_RESOURCE_RESERVATION;
  58 #pragma pack ()
  59
  60 #endif