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/** @file
Copyright (c) 2006, Intel Corporation
All rights reserved. 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 _EFI_PCI_HOT_PLUG_SUPPORT_H_
#define _EFI_PCI_HOT_PLUG_SUPPORT_H_
//
// stall 1 second
//
#define STALL_1_SECOND 1000000
typedef struct {
EFI_EVENT Event;
BOOLEAN Initialized;
VOID *Padding;
} ROOT_HPC_DATA;
extern EFI_PCI_HOT_PLUG_INIT_PROTOCOL *gPciHotPlugInit;
extern EFI_HPC_LOCATION *gPciRootHpcPool;
extern UINTN gPciRootHpcCount;
extern ROOT_HPC_DATA *gPciRootHpcData;
/**
Init HPC private data.
@param Event event object
@param Context HPC private data.
**/
VOID
EFIAPI
PciHPCInitialized (
IN EFI_EVENT Event,
IN VOID *Context
);
/**
Compare two device path
@param DevicePath1 the first device path want to be compared.
@param DevicePath2 the first device path want to be compared.
@retval TRUE equal.
@retval FALSE different.
**/
BOOLEAN
EfiCompareDevicePath (
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath1,
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath2
);
/**
Init hot plug support and root hot plug private data.
**/
EFI_STATUS
InitializeHotPlugSupport (
VOID
);
/**
Test whether PCI device is hot plug bus.
@param PciIoDevice PCI device instance.
@retval EFI_SUCCESS PCI device is hot plug bus.
@retval EFI_NOT_FOUND PCI device is not hot plug bus.
**/
EFI_STATUS
IsPciHotPlugBus (
PCI_IO_DEVICE *PciIoDevice
);
/**
Test whether device path is for root pci hot plug bus
@param HpbDevicePath tested device path
@param HpIndex Return the index of root hot plug in global array.
@retval TRUE device path is for root pci hot plug
@retval FALSE device path is not for root pci hot plug
**/
BOOLEAN
IsRootPciHotPlugBus (
IN EFI_DEVICE_PATH_PROTOCOL *HpbDevicePath,
OUT UINTN *HpIndex
);
/**
Test whether device path is for root pci hot plug controller
@param HpcDevicePath tested device path.
@param HpIndex Return the index of root hot plug in global array.
@retval TRUE device path is for root pci hot plug controller.
@retval FALSE device path is not for root pci hot plug controller.
**/
BOOLEAN
IsRootPciHotPlugController (
IN EFI_DEVICE_PATH_PROTOCOL *HpcDevicePath,
OUT UINTN *HpIndex
);
/**
Wrapper for creating event object for HPC
@param HpIndex index of hot plug device in global array.
@param Event event object.
@return status of create event invoken.
**/
EFI_STATUS
CreateEventForHpc (
IN UINTN HpIndex,
OUT EFI_EVENT *Event
);
/**
Wait for all root HPC initialized.
@param TimeoutInMicroSeconds microseconds to wait for all root hpc's initialization.
**/
EFI_STATUS
AllRootHPCInitialized (
IN UINTN TimeoutInMicroSeconds
);
/**
Check HPC capability register block
@param PciIoDevice PCI device instance.
@retval EFI_SUCCESS PCI device is HPC.
@retval EFI_NOT_FOUND PCI device is not HPC.
**/
EFI_STATUS
IsSHPC (
PCI_IO_DEVICE *PciIoDevice
);
/**
Get resource padding for hot plug bus
@param PciIoDevice PCI device instance.
@retval EFI_SUCCESS success get padding and set it into PCI device instance.
@retval EFI_NOT_FOUND PCI device is not a hot plug bus.
**/
EFI_STATUS
GetResourcePaddingForHpb (
IN PCI_IO_DEVICE *PciIoDevice
);
#endif
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