123 lines
4.0 KiB
C
123 lines
4.0 KiB
C
/**@file
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@copyright
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INTEL CONFIDENTIAL
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Copyright 2018 - 2019 Intel Corporation.
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The source code contained or described herein and all documents related to the
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source code ("Material") are owned by Intel Corporation or its suppliers or
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licensors. Title to the Material remains with Intel Corporation or its suppliers
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and licensors. The Material may contain trade secrets and proprietary and
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confidential information of Intel Corporation and its suppliers and licensors,
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and is protected by worldwide copyright and trade secret laws and treaty
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provisions. No part of the Material may be used, copied, reproduced, modified,
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published, uploaded, posted, transmitted, distributed, or disclosed in any way
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without Intel's prior express written permission.
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No license under any patent, copyright, trade secret or other intellectual
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property right is granted to or conferred upon you by disclosure or delivery
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of the Materials, either expressly, by implication, inducement, estoppel or
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otherwise. Any license under such intellectual property rights must be
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express and approved by Intel in writing.
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Unless otherwise agreed by Intel in writing, you may not remove or alter
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this notice or any other notice embedded in Materials by Intel or
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Intel's suppliers or licensors in any way.
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This file contains a 'Sample Driver' and is licensed as such under the terms
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of your license agreement with Intel or your vendor. This file may be modified
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by the user, subject to the additional terms of the license agreement.
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@par Specification Reference:
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**/
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#ifndef _PCI_HOT_PLUG_HELPERS_H_
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#define _PCI_HOT_PLUG_HELPERS_H_
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#include "PciHotPlug.h"
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#include <Library/PciSegmentLib.h>
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#include <Library/PcieHelperLib.h>
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/**
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Get the Parent Pci Address
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@param[in] Segment Segment Number
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@param[in] CurrentRpBus P2P Bridge Bus Number
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@retval ParentP2PBridgeBase Parent Pci Address
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**/
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UINT64
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GetParentPciAddress (
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IN UINT8 Segment,
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IN UINT64 CurrentRpBus
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);
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/**
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Get the Parent Resource
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@param[in] HpcPciAddress The address of the Hot Plug Controller function on the PCI bus.
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@param[out] ParentBusNum Parent Reserved Bus resource Number.
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@param[out] ParentPcieMegaMem Parent Reserved Alignment of MEM resource.
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@param[out] ParentPciePMegaMem Parent Reserved Alignment of PMEM resource.
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@param[out] ParentPcieKiloIo Parent Reserved Pcie Kilo Io Number.
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@retval EFI_SUCCESS.
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**/
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EFI_STATUS
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GetParentResourceSize (
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IN UINT64 HpcPciAddress,
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OUT UINT8 *ParentBusNum,
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OUT UINT16 *ParentPcieMegaMem,
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OUT UINT16 *ParentPciePMegaMem,
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OUT UINT8 *ParentPcieKiloIo
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);
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/**
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Check the HotPlug Capable of P2P bridge at the same Bus
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@param[in] Segment Segment Number
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@param[in] CurrentRpBus P2P Bridge Bus Number.
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@param[out] *StrucIndex Indxe number of NUMBER_OF_HOTPLUG_BRIDGE struct.
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid Bus number.
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@retval EFI_ABORTED No matched P2P Bridge, exit without recorded.
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**/
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EFI_STATUS
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GetCurrentBusP2pbHotPlug (
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IN UINT8 Segment,
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IN UINT8 CurrentRpBus,
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OUT UINT8 *StrucIndex
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);
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/**
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Calculate the number of Bus consumed by Root port, Upstream port and Downstream port.
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@param[in] ParentPciAddress The address of the Parent device.
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@param[in] CurrentPciAddress The address of the Current device.
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@param[in, out] *ConsumedBusNumber Consumed Bus number.
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@retval None
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**/
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VOID
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CalculateBusConsumptionBeforeAssign (
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IN UINT64 ParentPciAddress,
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IN UINT64 CurrentPciAddress,
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IN OUT UINT8 *ConsumedBusNumber
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);
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/**
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Check if P2pb device is the last one in the same layer bus.
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@param[in] HpcPciAddress The address of the Hot Plug Controller function on the PCI bus.
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@retval TRUE This P2pb device is the last one.
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@retval FALSE This P2pb device is not the last one.
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**/
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BOOLEAN
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IsLastP2pbDevice (
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IN UINT64 HpcPciAddress
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);
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#endif
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