diff options
| author | Laszlo Ersek <lersek@redhat.com> | 2017-09-21 11:38:47 +0200 |
|---|---|---|
| committer | Laszlo Ersek <lersek@redhat.com> | 2017-10-03 16:07:29 +0200 |
| commit | bdf73b57f2834f6891a1d0707c0baaaa37169f7b (patch) | |
| tree | 5a324daf6b53458806584aa6cea7af4d1ee0aa9b /OvmfPkg/Include | |
| parent | 8844f15d33c720323227ce61b518aed4549f19d0 (diff) | |
OvmfPkg/IndustryStandard: define PCI Capabilities for QEMU's PCI Bridges
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>
Diffstat (limited to 'OvmfPkg/Include')
| -rw-r--r-- | OvmfPkg/Include/IndustryStandard/QemuPciBridgeCapabilities.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/OvmfPkg/Include/IndustryStandard/QemuPciBridgeCapabilities.h b/OvmfPkg/Include/IndustryStandard/QemuPciBridgeCapabilities.h new file mode 100644 index 0000000000..bf2373c556 --- /dev/null +++ b/OvmfPkg/Include/IndustryStandard/QemuPciBridgeCapabilities.h @@ -0,0 +1,60 @@ +/** @file
+ Macro and type definitions for QEMU's Red Hat vendor-specific PCI
+ capabilities that provide various hints about PCI Bridges.
+
+ Refer to "docs/pcie_pci_bridge.txt" in the QEMU source directory.
+
+ Copyright (C) 2017, Red Hat, Inc.
+
+ This program and the accompanying materials are licensed and made available
+ under the terms and conditions of the BSD License which accompanies this
+ distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
+ WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+**/
+
+#ifndef __QEMU_PCI_BRIDGE_CAPABILITIES_H__
+#define __QEMU_PCI_BRIDGE_CAPABILITIES_H__
+
+#include <IndustryStandard/Pci23.h>
+
+//
+// The hints apply to PCI Bridges whose PCI_DEVICE_INDEPENDENT_REGION.VendorId
+// equals the following value.
+//
+#define QEMU_PCI_BRIDGE_VENDOR_ID_REDHAT 0x1B36
+
+//
+// Common capability header for all hints.
+//
+#pragma pack (1)
+typedef struct {
+ EFI_PCI_CAPABILITY_VENDOR_HDR VendorHdr;
+ UINT8 Type;
+} QEMU_PCI_BRIDGE_CAPABILITY_HDR;
+#pragma pack ()
+
+//
+// Values defined for QEMU_PCI_BRIDGE_CAPABILITY_HDR.Type.
+//
+#define QEMU_PCI_BRIDGE_CAPABILITY_TYPE_RESOURCE_RESERVATION 0x01
+
+//
+// PCI Resource Reservation structure for when
+// QEMU_PCI_BRIDGE_CAPABILITY_HDR.Type equals
+// QEMU_PCI_BRIDGE_CAPABILITY_TYPE_RESOURCE_RESERVATION.
+//
+#pragma pack (1)
+typedef struct {
+ QEMU_PCI_BRIDGE_CAPABILITY_HDR BridgeHdr;
+ UINT32 BusNumbers;
+ UINT64 Io;
+ UINT32 NonPrefetchable32BitMmio;
+ UINT32 Prefetchable32BitMmio;
+ UINT64 Prefetchable64BitMmio;
+} QEMU_PCI_BRIDGE_CAPABILITY_RESOURCE_RESERVATION;
+#pragma pack ()
+
+#endif
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