bdf73b57f2
QEMU has recently gained the ability to provide various hints about its
PCI bridges. The hints take the form of vendor-specific PCI capabilities.
Define macros and types under "OvmfPkg/Include/IndustryStandard" to
describe these capabilities.
The definitions correspond to "docs/pcie_pci_bridge.txt" in the QEMU tree.
Said documentation was added in the last commit of the following series:
a35fe226558a hw/pci: introduce pcie-pci-bridge device
70e1ee59bb94 hw/pci: introduce bridge-only vendor-specific capability to
provide some hints to firmware
226263fb5cda hw/pci: add QEMU-specific PCI capability to the Generic PCI
Express Root Port
c1800a162765 docs: update documentation considering PCIE-PCI bridge
We are going to parse the Resource Reservation Capability in
OvmfPkg/PciHotPlugInitDxe, and return the reservation requests to
PciBusDxe.
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Marcel Apfelbaum <marcel@redhat.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
/** @file
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Macro and type definitions for QEMU's Red Hat vendor-specific PCI
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capabilities that provide various hints about PCI Bridges.
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Refer to "docs/pcie_pci_bridge.txt" in the QEMU source directory.
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Copyright (C) 2017, Red Hat, Inc.
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
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WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __QEMU_PCI_BRIDGE_CAPABILITIES_H__
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#define __QEMU_PCI_BRIDGE_CAPABILITIES_H__
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#include <IndustryStandard/Pci23.h>
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//
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// The hints apply to PCI Bridges whose PCI_DEVICE_INDEPENDENT_REGION.VendorId
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// equals the following value.
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//
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#define QEMU_PCI_BRIDGE_VENDOR_ID_REDHAT 0x1B36
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//
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// Common capability header for all hints.
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//
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#pragma pack (1)
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typedef struct {
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EFI_PCI_CAPABILITY_VENDOR_HDR VendorHdr;
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UINT8 Type;
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} QEMU_PCI_BRIDGE_CAPABILITY_HDR;
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#pragma pack ()
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//
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// Values defined for QEMU_PCI_BRIDGE_CAPABILITY_HDR.Type.
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//
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#define QEMU_PCI_BRIDGE_CAPABILITY_TYPE_RESOURCE_RESERVATION 0x01
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//
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// PCI Resource Reservation structure for when
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// QEMU_PCI_BRIDGE_CAPABILITY_HDR.Type equals
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// QEMU_PCI_BRIDGE_CAPABILITY_TYPE_RESOURCE_RESERVATION.
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//
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#pragma pack (1)
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typedef struct {
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QEMU_PCI_BRIDGE_CAPABILITY_HDR BridgeHdr;
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UINT32 BusNumbers;
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UINT64 Io;
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UINT32 NonPrefetchable32BitMmio;
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UINT32 Prefetchable32BitMmio;
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UINT64 Prefetchable64BitMmio;
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} QEMU_PCI_BRIDGE_CAPABILITY_RESOURCE_RESERVATION;
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#pragma pack ()
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#endif
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