audk/IntelFrameworkModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.h

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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_ENUMERATOR_SUPPORT_H_
#define _EFI_PCI_ENUMERATOR_SUPPORT_H_
/**
This routine is used to check whether the pci device is present.
@param PciRootBridgeIo Pointer to instance of EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
@param Pci Output buffer for PCI device structure
@param Bus PCI bus NO
@param Device PCI device NO
@param Func PCI Func NO
@retval EFI_NOT_FOUND device not present
@retval EFI_SUCCESS device is found.
**/
EFI_STATUS
PciDevicePresent (
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo,
PCI_TYPE00 *Pci,
UINT8 Bus,
UINT8 Device,
UINT8 Func
);
/**
Collect all the resource information under this root bridge
A database that records all the information about pci device subject to this
root bridge will then be created.
@param Bridge Parent bridge instance
@param StartBusNumber Bus number of begining
**/
EFI_STATUS
PciPciDeviceInfoCollector (
IN PCI_IO_DEVICE *Bridge,
UINT8 StartBusNumber
);
/**
Seach required device and get PCI device info block
@param Bridge Parent bridge instance
@param Pci Output of PCI device info block
@param Bus PCI bus NO.
@param Device PCI device NO.
@param Func PCI func NO.
@param PciDevice output of searched PCI device instance
**/
EFI_STATUS
PciSearchDevice (
IN PCI_IO_DEVICE *Bridge,
IN PCI_TYPE00 *Pci,
IN UINT8 Bus,
IN UINT8 Device,
IN UINT8 Func,
OUT PCI_IO_DEVICE **PciDevice
);
/**
Create PCI private data for PCI device
@param Bridge Parent bridge instance
@param Pci PCI bar block
@param Bus PCI device Bus NO.
@param Device PCI device DeviceNO.
@param Func PCI device's func NO.
@return new PCI device's private date structure.
**/
PCI_IO_DEVICE *
GatherDeviceInfo (
IN PCI_IO_DEVICE *Bridge,
IN PCI_TYPE00 *Pci,
UINT8 Bus,
UINT8 Device,
UINT8 Func
);
/**
Create private data for bridge device's PPB.
@param Bridge Parent bridge
@param Pci Pci device block
@param Bus Bridge device's bus NO.
@param Device Bridge device's device NO.
@param Func Bridge device's func NO.
@return bridge device instance.
**/
PCI_IO_DEVICE *
GatherPpbInfo (
IN PCI_IO_DEVICE *Bridge,
IN PCI_TYPE00 *Pci,
UINT8 Bus,
UINT8 Device,
UINT8 Func
);
/**
Create private data for hotplug bridge device
@param Bridge Parent bridge instance
@param Pci PCI bar block
@param Bus hotplug bridge device's bus NO.
@param Device hotplug bridge device's device NO.
@param Func hotplug bridge device's Func NO.
@return hotplug bridge device instance
**/
PCI_IO_DEVICE *
GatherP2CInfo (
IN PCI_IO_DEVICE *Bridge,
IN PCI_TYPE00 *Pci,
UINT8 Bus,
UINT8 Device,
UINT8 Func
);
/**
Create device path for pci deivce
@param ParentDevicePath Parent bridge's path.
@param PciIoDevice Pci device instance.
@return device path protocol instance for specific pci device.
**/
EFI_DEVICE_PATH_PROTOCOL *
CreatePciDevicePath (
IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath,
IN PCI_IO_DEVICE *PciIoDevice
);
/**
Check the bar is existed or not.
@param PciIoDevice - A pointer to the PCI_IO_DEVICE.
@param Offset - The offset.
@param BarLengthValue - The bar length value.
@param OriginalBarValue - The original bar value.
@retval EFI_NOT_FOUND - The bar don't exist.
@retval EFI_SUCCESS - The bar exist.
**/
EFI_STATUS
BarExisted (
IN PCI_IO_DEVICE *PciIoDevice,
IN UINTN Offset,
OUT UINT32 *BarLengthValue,
OUT UINT32 *OriginalBarValue
);
/**
Test whether the device can support attributes
@param PciIoDevice Pci device instance
@param Command Command register value.
@param BridgeControl Bridge control value for PPB or P2C.
@param OldCommand Old command register offset
@param OldBridgeControl Old Bridge control value for PPB or P2C.
@return EFI_SUCCESS.
**/
EFI_STATUS
PciTestSupportedAttribute (
IN PCI_IO_DEVICE *PciIoDevice,
IN UINT16 *Command,
IN UINT16 *BridgeControl,
IN UINT16 *OldCommand,
IN UINT16 *OldBridgeControl
);
/**
Set the supported or current attributes of a PCI device
@param PciIoDevice - Structure pointer for PCI device.
@param Command - Command register value.
@param BridgeControl - Bridge control value for PPB or P2C.
@param Option - Make a choice of EFI_SET_SUPPORTS or EFI_SET_ATTRIBUTES.
**/
EFI_STATUS
PciSetDeviceAttribute (
IN PCI_IO_DEVICE *PciIoDevice,
IN UINT16 Command,
IN UINT16 BridgeControl,
IN UINTN Option
);
/**
Determine if the device can support Fast Back to Back attribute
@param PciIoDevice Pci device instance.
@param StatusIndex Status register value.
**/
EFI_STATUS
GetFastBackToBackSupport (
IN PCI_IO_DEVICE *PciIoDevice,
IN UINT8 StatusIndex
);
/**
Determine the related attributes of all devices under a Root Bridge
@param PciIoDevice PCI device instance.
**/
EFI_STATUS
DetermineDeviceAttribute (
IN PCI_IO_DEVICE *PciIoDevice
);
/**
This routine is used to update the bar information for those incompatible PCI device
@param PciIoDevice Pci device instance.
@return EFI_UNSUPPORTED failed to update Pci Info.
**/
EFI_STATUS
UpdatePciInfo (
IN PCI_IO_DEVICE *PciIoDevice
);
/**
This routine will update the alignment with the new alignment
@param Alignment old alignment.
@param NewAlignment new alignment.
**/
VOID
SetNewAlign (
IN UINT64 *Alignment,
IN UINT64 NewAlignment
);
/**
Parse PCI bar bit.
@param PciIoDevice Pci device instance.
@param Offset bar offset.
@param BarIndex bar index.
@return next bar offset.
**/
UINTN
PciParseBar (
IN PCI_IO_DEVICE *PciIoDevice,
IN UINTN Offset,
IN UINTN BarIndex
);
/**
This routine is used to initialize the bar of a PCI device
It can be called typically when a device is going to be rejected.
@param PciIoDevice Pci device instance.
**/
EFI_STATUS
InitializePciDevice (
IN PCI_IO_DEVICE *PciIoDevice
);
/**
Init PPB for bridge device
@param PciIoDevice Pci device instance.
**/
EFI_STATUS
InitializePpb (
IN PCI_IO_DEVICE *PciIoDevice
);
/**
Init private data for Hotplug bridge device
@param PciIoDevice hotplug bridge device.
**/
EFI_STATUS
InitializeP2C (
IN PCI_IO_DEVICE *PciIoDevice
);
/**
Create and initiliaze general PCI I/O device instance for
PCI device/bridge device/hotplug bridge device.
@param PciRootBridgeIo Pointer to instance of EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
@param Pci Pci bar block
@param Bus device Bus NO.
@param Device device device NO.
@param Func device func NO.
@return instance of PCI device.
**/
PCI_IO_DEVICE *
CreatePciIoDevice (
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo,
IN PCI_TYPE00 *Pci,
UINT8 Bus,
UINT8 Device,
UINT8 Func
);
/**
This routine is used to enumerate entire pci bus system
in a given platform
It is only called on the second start on the same Root Bridge.
@param Controller Parent bridge handler.
@return status of operation.
**/
EFI_STATUS
PciEnumeratorLight (
IN EFI_HANDLE Controller
);
/**
Get bus range.
@param Descriptors A pointer to the address space descriptor.
@param MinBus The min bus.
@param MaxBus The max bus.
@param BusRange The bus range.
@retval EFI_SUCCESS Success operation.
@retval EFI_NOT_FOUND can not find the specific bus.
**/
EFI_STATUS
PciGetBusRange (
IN EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR **Descriptors,
OUT UINT16 *MinBus,
OUT UINT16 *MaxBus,
OUT UINT16 *BusRange
);
/**
This routine can be used to start the root bridge.
@param RootBridgeDev Pci device instance.
@retval EFI_SUCCESS This device started.
**/
EFI_STATUS
StartManagingRootBridge (
IN PCI_IO_DEVICE *RootBridgeDev
);
/**
This routine can be used to check whether a PCI device should be rejected when light enumeration
@param PciIoDevice Pci device instance.
@retval TRUE This device should be rejected.
@retval FALSE This device shouldn't be rejected.
**/
BOOLEAN
IsPciDeviceRejected (
IN PCI_IO_DEVICE *PciIoDevice
);
#endif