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   SPDX-License-Identifier: BSD-2-Clause-Patent
  10 **/
  11
  12 #ifndef __QEMU_PCI_BRIDGE_CAPABILITIES_H__
  13 #define __QEMU_PCI_BRIDGE_CAPABILITIES_H__
  14
  15 #include <IndustryStandard/Pci23.h>
  16
  17 //
  18 // The hints apply to PCI Bridges whose PCI_DEVICE_INDEPENDENT_REGION.VendorId
  19 // equals the following value.
  20 //
  21 #define QEMU_PCI_BRIDGE_VENDOR_ID_REDHAT  0x1B36
  22
  23 //
  24 // Common capability header for all hints.
  25 //
  26 #pragma pack (1)
  27 typedef struct {
  28   EFI_PCI_CAPABILITY_VENDOR_HDR    VendorHdr;
  29   UINT8                            Type;
  30 } QEMU_PCI_BRIDGE_CAPABILITY_HDR;
  31 #pragma pack ()
  32
  33 //
  34 // Values defined for QEMU_PCI_BRIDGE_CAPABILITY_HDR.Type.
  35 //
  36 #define QEMU_PCI_BRIDGE_CAPABILITY_TYPE_RESOURCE_RESERVATION  0x01
  37
  38 //
  39 // PCI Resource Reservation structure for when
  40 // QEMU_PCI_BRIDGE_CAPABILITY_HDR.Type equals
  41 // QEMU_PCI_BRIDGE_CAPABILITY_TYPE_RESOURCE_RESERVATION.
  42 //
  43 #pragma pack (1)
  44 typedef struct {
  45   QEMU_PCI_BRIDGE_CAPABILITY_HDR    BridgeHdr;
  46   UINT32                            BusNumbers;
  47   UINT64                            Io;
  48   UINT32                            NonPrefetchable32BitMmio;
  49   UINT32                            Prefetchable32BitMmio;
  50   UINT64                            Prefetchable64BitMmio;
  51 } QEMU_PCI_BRIDGE_CAPABILITY_RESOURCE_RESERVATION;
  52 #pragma pack ()
  53
  54 #endif