mirror of https://github.com/acidanthera/audk.git
160 lines
4.9 KiB
C
160 lines
4.9 KiB
C
/** @file
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Internal library declaration for PCI Bus module.
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Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _EFI_PCI_LIB_H_
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#define _EFI_PCI_LIB_H_
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typedef struct {
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EFI_HANDLE Handle;
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} EFI_DEVICE_HANDLE_EXTENDED_DATA_PAYLOAD;
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typedef struct {
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UINT32 Bar;
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UINT16 DevicePathSize;
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UINT16 ReqResSize;
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UINT16 AllocResSize;
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UINT8 *DevicePath;
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UINT8 *ReqRes;
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UINT8 *AllocRes;
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} EFI_RESOURCE_ALLOC_FAILURE_ERROR_DATA_PAYLOAD;
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/**
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Retrieve the PCI Card device BAR information via PciIo interface.
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@param PciIoDevice PCI Card device instance.
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**/
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VOID
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GetBackPcCardBar (
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IN PCI_IO_DEVICE *PciIoDevice
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);
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/**
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Remove rejected pci device from specific root bridge
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handle.
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@param RootBridgeHandle Specific parent root bridge handle.
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@param Bridge Bridge device instance.
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**/
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VOID
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RemoveRejectedPciDevices (
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IN EFI_HANDLE RootBridgeHandle,
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IN PCI_IO_DEVICE *Bridge
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);
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/**
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Submits the I/O and memory resource requirements for the specified PCI Host Bridge.
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@param PciResAlloc Point to protocol instance of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.
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@retval EFI_SUCCESS Successfully finished resource allocation.
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@retval EFI_NOT_FOUND Cannot get root bridge instance.
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@retval EFI_OUT_OF_RESOURCES Platform failed to program the resources if no hot plug supported.
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@retval other Some error occurred when allocating resources for the PCI Host Bridge.
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@note Feature flag PcdPciBusHotplugDeviceSupport determine whether need support hotplug.
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**/
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EFI_STATUS
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PciHostBridgeResourceAllocator (
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IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc
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);
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/**
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Allocate NumberOfBuses buses and return the next available PCI bus number.
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@param Bridge Bridge device instance.
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@param StartBusNumber Current available PCI bus number.
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@param NumberOfBuses Number of buses enumerated below the StartBusNumber.
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@param NextBusNumber Next available PCI bus number.
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@retval EFI_SUCCESS Available bus number resource is enough. Next available PCI bus number
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is returned in NextBusNumber.
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@retval EFI_OUT_OF_RESOURCES Available bus number resource is not enough for allocation.
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**/
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EFI_STATUS
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PciAllocateBusNumber (
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IN PCI_IO_DEVICE *Bridge,
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IN UINT8 StartBusNumber,
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IN UINT8 NumberOfBuses,
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OUT UINT8 *NextBusNumber
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);
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/**
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Scan pci bus and assign bus number to the given PCI bus system.
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@param Bridge Bridge device instance.
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@param StartBusNumber start point.
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@param SubBusNumber Point to sub bus number.
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@param PaddedBusRange Customized bus number.
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@retval EFI_SUCCESS Successfully scanned and assigned bus number.
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@retval other Some error occurred when scanning pci bus.
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@note Feature flag PcdPciBusHotplugDeviceSupport determine whether need support hotplug.
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**/
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EFI_STATUS
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PciScanBus (
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IN PCI_IO_DEVICE *Bridge,
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IN UINT8 StartBusNumber,
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OUT UINT8 *SubBusNumber,
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OUT UINT8 *PaddedBusRange
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);
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/**
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Process Option Rom on the specified root bridge.
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@param Bridge Pci root bridge device instance.
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@retval EFI_SUCCESS Success process.
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@retval other Some error occurred when processing Option Rom on the root bridge.
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**/
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EFI_STATUS
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PciRootBridgeP2CProcess (
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IN PCI_IO_DEVICE *Bridge
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);
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/**
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Process Option Rom on the specified host bridge.
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@param PciResAlloc Pointer to instance of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.
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@retval EFI_SUCCESS Success process.
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@retval EFI_NOT_FOUND Can not find the root bridge instance.
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@retval other Some error occurred when processing Option Rom on the host bridge.
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**/
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EFI_STATUS
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PciHostBridgeP2CProcess (
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IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc
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);
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/**
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This function is used to enumerate the entire host bridge
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in a given platform.
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@param PciResAlloc A pointer to the PCI Host Resource Allocation protocol.
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@retval EFI_SUCCESS Successfully enumerated the host bridge.
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@retval EFI_OUT_OF_RESOURCES No enough memory available.
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@retval other Some error occurred when enumerating the host bridge.
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**/
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EFI_STATUS
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PciHostBridgeEnumerator (
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IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc
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);
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#endif
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