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| author | Ruiyu Ni <ruiyu.ni@intel.com> | 2016-05-10 11:14:45 +0800 |
|---|---|---|
| committer | Ruiyu Ni <ruiyu.ni@intel.com> | 2016-05-11 08:53:36 +0800 |
| commit | 49effaf26ec952905bc7710587c6a58437864cdf (patch) | |
| tree | aa1611535b9387a8fa73859702d89a74ec2e6601 /OvmfPkg/Library/PciHostBridgeLib/PciHostBridge.h | |
| parent | c0a2591b30489ead14ada91908646605929b62b2 (diff) | |
| download | edk2-49effaf26ec952905bc7710587c6a58437864cdf.tar.gz edk2-49effaf26ec952905bc7710587c6a58437864cdf.tar.bz2 edk2-49effaf26ec952905bc7710587c6a58437864cdf.zip | |
OvmfPkg/PciHostBridgeLib: Scan for root bridges when running over Xen
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Gary Lin <glin@suse.com>
Diffstat (limited to 'OvmfPkg/Library/PciHostBridgeLib/PciHostBridge.h')
| -rw-r--r-- | OvmfPkg/Library/PciHostBridgeLib/PciHostBridge.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridge.h b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridge.h new file mode 100644 index 0000000000..c23d40c8ac --- /dev/null +++ b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridge.h @@ -0,0 +1,75 @@ +/** @file
+ Header file of OVMF instance of PciHostBridgeLib.
+
+ Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
+
+ 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.
+
+**/
+
+PCI_ROOT_BRIDGE *
+ScanForRootBridges (
+ UINTN *NumberOfRootBridges
+);
+
+/**
+ Initialize a PCI_ROOT_BRIDGE structure.
+
+ @param[in] Supports Supported attributes.
+
+ @param[in] Attributes Initial attributes.
+
+ @param[in] AllocAttributes Allocation attributes.
+
+ @param[in] RootBusNumber The bus number to store in RootBus.
+
+ @param[in] MaxSubBusNumber The inclusive maximum bus number that can be
+ assigned to any subordinate bus found behind any
+ PCI bridge hanging off this root bus.
+
+ The caller is repsonsible for ensuring that
+ RootBusNumber <= MaxSubBusNumber. If
+ RootBusNumber equals MaxSubBusNumber, then the
+ root bus has no room for subordinate buses.
+
+ @param[in] Io IO aperture.
+
+ @param[in] Mem MMIO aperture.
+
+ @param[in] MemAbove4G MMIO aperture above 4G.
+
+ @param[in] PMem Prefetchable MMIO aperture.
+
+ @param[in] PMemAbove4G Prefetchable MMIO aperture above 4G.
+
+ @param[out] RootBus The PCI_ROOT_BRIDGE structure (allocated by the
+ caller) that should be filled in by this
+ function.
+
+ @retval EFI_SUCCESS Initialization successful. A device path
+ consisting of an ACPI device path node, with
+ UID = RootBusNumber, has been allocated and
+ linked into RootBus.
+
+ @retval EFI_OUT_OF_RESOURCES Memory allocation failed.
+**/
+EFI_STATUS
+InitRootBridge (
+ IN UINT64 Supports,
+ IN UINT64 Attributes,
+ IN UINT64 AllocAttributes,
+ IN UINT8 RootBusNumber,
+ IN UINT8 MaxSubBusNumber,
+ IN PCI_ROOT_BRIDGE_APERTURE *Io,
+ IN PCI_ROOT_BRIDGE_APERTURE *Mem,
+ IN PCI_ROOT_BRIDGE_APERTURE *MemAbove4G,
+ IN PCI_ROOT_BRIDGE_APERTURE *PMem,
+ IN PCI_ROOT_BRIDGE_APERTURE *PMemAbove4G,
+ OUT PCI_ROOT_BRIDGE *RootBus
+ );
|