MdeModulePkg/Bus/Usb/UsbBusDxe/UsbUtility.h - edk2 - Git at Google

 /** @file

     Manage Usb Port/Hc/Etc.

 Copyright (c) 2007, 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.

 **/

 #ifndef _EFI_USB_UTILITY_H_
 #define _EFI_USB_UTILITY_H_

 /**
   Get the capability of the host controller.

   @param  UsbBus           The usb driver.
   @param  MaxSpeed         The maximum speed this host controller supports.
   @param  NumOfPort        The number of the root hub port.
   @param  Is64BitCapable   Whether this controller support 64 bit addressing.

   @retval EFI_SUCCESS      The host controller capability is returned.
   @retval Others           Failed to retrieve the host controller capability.

 **/
 EFI_STATUS
 UsbHcGetCapability (
   IN  USB_BUS             *UsbBus,
   OUT UINT8               *MaxSpeed,
   OUT UINT8               *NumOfPort,
   OUT UINT8               *Is64BitCapable
   );

 /**
   Reset the host controller.

   @param  UsbBus                The usb bus driver.
   @param  Attributes            The reset type, only global reset is used by this driver.

   @retval EFI_SUCCESS           The reset operation succeeded.
   @retval EFI_INVALID_PARAMETER Attributes is not valid.
   @retval EFI_UNSUPPOURTED      The type of reset specified by Attributes is
                                 not currently supported by the host controller.
   @retval EFI_DEVICE_ERROR      Host controller isn't halted to reset.
 **/
 EFI_STATUS
 UsbHcReset (
   IN USB_BUS              *UsbBus,
   IN UINT16               Attributes
   );

 /**
   Get the current operation state of the host controller.

   @param  UsbBus           The USB bus driver.
   @param  State            The host controller operation state.

   @retval EFI_SUCCESS      The operation state is returned in State.
   @retval Others           Failed to get the host controller state.

 **/
 EFI_STATUS
 UsbHcGetState (
   IN  USB_BUS             *UsbBus,
   OUT EFI_USB_HC_STATE    *State
   );

 /**
   Set the host controller operation state.

   @param  UsbBus           The USB bus driver.
   @param  State            The state to set.

   @retval EFI_SUCCESS      The host controller is now working at State.
   @retval Others           Failed to set operation state.

 **/
 EFI_STATUS
 UsbHcSetState (
   IN  USB_BUS             *UsbBus,
   IN EFI_USB_HC_STATE     State
   );

 /**
   Get the root hub port state.

   @param  UsbBus           The USB bus driver.
   @param  PortIndex        The index of port.
   @param  PortStatus       The variable to save port state.

   @retval EFI_SUCCESS      The root port state is returned in.
   @retval Others           Failed to get the root hub port state.

 **/
 EFI_STATUS
 UsbHcGetRootHubPortStatus (
   IN  USB_BUS             *UsbBus,
   IN  UINT8               PortIndex,
   OUT EFI_USB_PORT_STATUS *PortStatus
   );

 /**
   Set the root hub port feature.

   @param  UsbBus           The USB bus driver.
   @param  PortIndex        The port index.
   @param  Feature          The port feature to set.

   @retval EFI_SUCCESS      The port feature is set.
   @retval Others           Failed to set port feature.

 **/
 EFI_STATUS
 UsbHcSetRootHubPortFeature (
   IN USB_BUS              *UsbBus,
   IN UINT8                PortIndex,
   IN EFI_USB_PORT_FEATURE Feature
   );

 /**
   Clear the root hub port feature.

   @param  UsbBus           The USB bus driver.
   @param  PortIndex        The port index.
   @param  Feature          The port feature to clear.

   @retval EFI_SUCCESS      The port feature is clear.
   @retval Others           Failed to clear port feature.

 **/
 EFI_STATUS
 UsbHcClearRootHubPortFeature (
   IN USB_BUS              *UsbBus,
   IN UINT8                PortIndex,
   IN EFI_USB_PORT_FEATURE Feature
   );

 /**
   Execute a control transfer to the device.

   @param  UsbBus           The USB bus driver.
   @param  DevAddr          The device address.
   @param  DevSpeed         The device speed.
   @param  MaxPacket        Maximum packet size of endpoint 0.
   @param  Request          The control transfer request.
   @param  Direction        The direction of data stage.
   @param  Data             The buffer holding data.
   @param  DataLength       The length of the data.
   @param  TimeOut          Timeout (in ms) to wait until timeout.
   @param  Translator       The transaction translator for low/full speed device.
   @param  UsbResult        The result of transfer.

   @retval EFI_SUCCESS      The control transfer finished without error.
   @retval Others           The control transfer failed, reason returned in UsbReslt.

 **/
 EFI_STATUS
 UsbHcControlTransfer (
   IN  USB_BUS                             *UsbBus,
   IN  UINT8                               DevAddr,
   IN  UINT8                               DevSpeed,
   IN  UINTN                               MaxPacket,
   IN  EFI_USB_DEVICE_REQUEST              *Request,
   IN  EFI_USB_DATA_DIRECTION              Direction,
   IN  OUT VOID                            *Data,
   IN  OUT UINTN                           *DataLength,
   IN  UINTN                               TimeOut,
   IN  EFI_USB2_HC_TRANSACTION_TRANSLATOR  *Translator,
   OUT UINT32                              *UsbResult
   );

 /**
   Execute a bulk transfer to the device's endpoint.

   @param  UsbBus           The USB bus driver.
   @param  DevAddr          The target device address.
   @param  EpAddr           The target endpoint address, with direction encoded in
                            bit 7.
   @param  DevSpeed         The device's speed.
   @param  MaxPacket        The endpoint's max packet size.
   @param  BufferNum        The number of data buffer.
   @param  Data             Array of pointers to data buffer.
   @param  DataLength       The length of data buffer.
   @param  DataToggle       On input, the initial data toggle to use, also  return
                            the next toggle on output.
   @param  TimeOut          The time to wait until timeout.
   @param  Translator       The transaction translator for low/full speed device.
   @param  UsbResult        The result of USB execution.

   @retval EFI_SUCCESS      The bulk transfer is finished without error.
   @retval Others           Failed to execute bulk transfer, result in UsbResult.

 **/
 EFI_STATUS
 UsbHcBulkTransfer (
   IN  USB_BUS                             *UsbBus,
   IN  UINT8                               DevAddr,
   IN  UINT8                               EpAddr,
   IN  UINT8                               DevSpeed,
   IN  UINTN                               MaxPacket,
   IN  UINT8                               BufferNum,
   IN  OUT VOID                            *Data[EFI_USB_MAX_BULK_BUFFER_NUM],
   IN  OUT UINTN                           *DataLength,
   IN  OUT UINT8                           *DataToggle,
   IN  UINTN                               TimeOut,
   IN  EFI_USB2_HC_TRANSACTION_TRANSLATOR  *Translator,
   OUT UINT32                              *UsbResult
   );

 /**
   Queue or cancel an asynchronous interrupt transfer.

   @param  UsbBus           The USB bus driver.
   @param  DevAddr          The target device address.
   @param  EpAddr           The target endpoint address, with direction encoded in
                            bit 7.
   @param  DevSpeed         The device's speed.
   @param  MaxPacket        The endpoint's max packet size.
   @param  IsNewTransfer    Whether this is a new request. If not, cancel the old
                            request.
   @param  DataToggle       Data toggle to use on input, next toggle on output.
   @param  PollingInterval  The interval to poll the interrupt transfer (in ms).
   @param  DataLength       The length of periodical data receive.
   @param  Translator       The transaction translator for low/full speed device.
   @param  Callback         Function to call when data is received.
   @param  Context          The context to the callback.

   @retval EFI_SUCCESS      The asynchronous transfer is queued.
   @retval Others           Failed to queue the transfer.

 **/
 EFI_STATUS
 UsbHcAsyncInterruptTransfer (
   IN  USB_BUS                             *UsbBus,
   IN  UINT8                               DevAddr,
   IN  UINT8                               EpAddr,
   IN  UINT8                               DevSpeed,
   IN  UINTN                               MaxPacket,
   IN  BOOLEAN                             IsNewTransfer,
   IN OUT UINT8                            *DataToggle,
   IN  UINTN                               PollingInterval,
   IN  UINTN                               DataLength,
   IN  EFI_USB2_HC_TRANSACTION_TRANSLATOR  *Translator,
   IN  EFI_ASYNC_USB_TRANSFER_CALLBACK     Callback,
   IN  VOID                                *Context OPTIONAL
   );

 /**
   Execute a synchronous interrupt transfer to the target endpoint.

   @param  UsbBus           The USB bus driver.
   @param  DevAddr          The target device address.
   @param  EpAddr           The target endpoint address, with direction encoded in
                            bit 7.
   @param  DevSpeed         The device's speed.
   @param  MaxPacket        The endpoint's max packet size.
   @param  Data             Pointer to data buffer.
   @param  DataLength       The length of data buffer.
   @param  DataToggle       On input, the initial data toggle to use, also  return
                            the next toggle on output.
   @param  TimeOut          The time to wait until timeout.
   @param  Translator       The transaction translator for low/full speed device.
   @param  UsbResult        The result of USB execution.

   @retval EFI_SUCCESS      The synchronous interrupt transfer is OK.
   @retval Others           Failed to execute the synchronous interrupt transfer.

 **/
 EFI_STATUS
 UsbHcSyncInterruptTransfer (
   IN  USB_BUS                             *UsbBus,
   IN  UINT8                               DevAddr,
   IN  UINT8                               EpAddr,
   IN  UINT8                               DevSpeed,
   IN  UINTN                               MaxPacket,
   IN OUT VOID                             *Data,
   IN OUT UINTN                            *DataLength,
   IN OUT UINT8                            *DataToggle,
   IN  UINTN                               TimeOut,
   IN  EFI_USB2_HC_TRANSACTION_TRANSLATOR  *Translator,
   OUT UINT32                              *UsbResult
   );

 /**
   Execute a synchronous Isochronous USB transfer.

   @param  UsbBus           The USB bus driver.
   @param  DevAddr          The target device address.
   @param  EpAddr           The target endpoint address, with direction encoded in
                            bit 7.
   @param  DevSpeed         The device's speed.
   @param  MaxPacket        The endpoint's max packet size.
   @param  BufferNum        The number of data buffer.
   @param  Data             Array of pointers to data buffer.
   @param  DataLength       The length of data buffer.
   @param  Translator       The transaction translator for low/full speed device.
   @param  UsbResult        The result of USB execution.

   @retval EFI_UNSUPPORTED  The isochronous transfer isn't supported now.

 **/
 EFI_STATUS
 UsbHcIsochronousTransfer (
   IN  USB_BUS                             *UsbBus,
   IN  UINT8                               DevAddr,
   IN  UINT8                               EpAddr,
   IN  UINT8                               DevSpeed,
   IN  UINTN                               MaxPacket,
   IN  UINT8                               BufferNum,
   IN  OUT VOID                            *Data[EFI_USB_MAX_ISO_BUFFER_NUM],
   IN  UINTN                               DataLength,
   IN  EFI_USB2_HC_TRANSACTION_TRANSLATOR  *Translator,
   OUT UINT32                              *UsbResult
   );

 /**
   Queue an asynchronous isochronous transfer.

   @param  UsbBus           The USB bus driver.
   @param  DevAddr          The target device address.
   @param  EpAddr           The target endpoint address, with direction encoded in
                            bit 7.
   @param  DevSpeed         The device's speed.
   @param  MaxPacket        The endpoint's max packet size.
   @param  BufferNum        The number of data buffer.
   @param  Data             Array of pointers to data buffer.
   @param  DataLength       The length of data buffer.
   @param  Translator       The transaction translator for low/full speed device.
   @param  Callback         The function to call when data is transferred.
   @param  Context          The context to the callback function.

   @retval EFI_UNSUPPORTED  The asynchronous isochronous transfer isn't supported.

 **/
 EFI_STATUS
 UsbHcAsyncIsochronousTransfer (
   IN  USB_BUS                             *UsbBus,
   IN  UINT8                               DevAddr,
   IN  UINT8                               EpAddr,
   IN  UINT8                               DevSpeed,
   IN  UINTN                               MaxPacket,
   IN  UINT8                               BufferNum,
   IN OUT VOID                             *Data[EFI_USB_MAX_ISO_BUFFER_NUM],
   IN  UINTN                               DataLength,
   IN  EFI_USB2_HC_TRANSACTION_TRANSLATOR  *Translator,
   IN  EFI_ASYNC_USB_TRANSFER_CALLBACK     Callback,
   IN  VOID                                *Context
   );

 /**
   Open the USB host controller protocol BY_CHILD.

   @param  Bus              The USB bus driver.
   @param  Child            The child handle.

   @return The open protocol return.

 **/
 EFI_STATUS
 UsbOpenHostProtoByChild (
   IN USB_BUS              *Bus,
   IN EFI_HANDLE           Child
   );

 /**
   Close the USB host controller protocol BY_CHILD.

   @param  Bus              The USB bus driver.
   @param  Child            The child handle.

   @return None.

 **/
 VOID
 UsbCloseHostProtoByChild (
   IN USB_BUS              *Bus,
   IN EFI_HANDLE           Child
   );

 /**
   return the current TPL, copied from the EDKII glue lib.

   @param  VOID.

   @return Current TPL.

 **/
 EFI_TPL
 UsbGetCurrentTpl (
   VOID
   );

 #endif
	/** @file

	Manage Usb Port/Hc/Etc.

	Copyright (c) 2007, 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.

	**/

	#ifndef _EFI_USB_UTILITY_H_
	#define _EFI_USB_UTILITY_H_

	/**
	Get the capability of the host controller.

	@param UsbBus The usb driver.
	@param MaxSpeed The maximum speed this host controller supports.
	@param NumOfPort The number of the root hub port.
	@param Is64BitCapable Whether this controller support 64 bit addressing.

	@retval EFI_SUCCESS The host controller capability is returned.
	@retval Others Failed to retrieve the host controller capability.

	**/
	EFI_STATUS
	UsbHcGetCapability (
	IN USB_BUS *UsbBus,
	OUT UINT8 *MaxSpeed,
	OUT UINT8 *NumOfPort,
	OUT UINT8 *Is64BitCapable
	);

	/**
	Reset the host controller.

	@param UsbBus The usb bus driver.
	@param Attributes The reset type, only global reset is used by this driver.

	@retval EFI_SUCCESS The reset operation succeeded.
	@retval EFI_INVALID_PARAMETER Attributes is not valid.
	@retval EFI_UNSUPPOURTED The type of reset specified by Attributes is
	not currently supported by the host controller.
	@retval EFI_DEVICE_ERROR Host controller isn't halted to reset.
	**/
	EFI_STATUS
	UsbHcReset (
	IN USB_BUS *UsbBus,
	IN UINT16 Attributes
	);

	/**
	Get the current operation state of the host controller.

	@param UsbBus The USB bus driver.
	@param State The host controller operation state.

	@retval EFI_SUCCESS The operation state is returned in State.
	@retval Others Failed to get the host controller state.

	**/
	EFI_STATUS
	UsbHcGetState (
	IN USB_BUS *UsbBus,
	OUT EFI_USB_HC_STATE *State
	);

	/**
	Set the host controller operation state.

	@param UsbBus The USB bus driver.
	@param State The state to set.

	@retval EFI_SUCCESS The host controller is now working at State.
	@retval Others Failed to set operation state.

	**/
	EFI_STATUS
	UsbHcSetState (
	IN USB_BUS *UsbBus,
	IN EFI_USB_HC_STATE State
	);

	/**
	Get the root hub port state.

	@param UsbBus The USB bus driver.
	@param PortIndex The index of port.
	@param PortStatus The variable to save port state.

	@retval EFI_SUCCESS The root port state is returned in.
	@retval Others Failed to get the root hub port state.

	**/
	EFI_STATUS
	UsbHcGetRootHubPortStatus (
	IN USB_BUS *UsbBus,
	IN UINT8 PortIndex,
	OUT EFI_USB_PORT_STATUS *PortStatus
	);

	/**
	Set the root hub port feature.

	@param UsbBus The USB bus driver.
	@param PortIndex The port index.
	@param Feature The port feature to set.

	@retval EFI_SUCCESS The port feature is set.
	@retval Others Failed to set port feature.

	**/
	EFI_STATUS
	UsbHcSetRootHubPortFeature (
	IN USB_BUS *UsbBus,
	IN UINT8 PortIndex,
	IN EFI_USB_PORT_FEATURE Feature
	);

	/**
	Clear the root hub port feature.

	@param UsbBus The USB bus driver.
	@param PortIndex The port index.
	@param Feature The port feature to clear.

	@retval EFI_SUCCESS The port feature is clear.
	@retval Others Failed to clear port feature.

	**/
	EFI_STATUS
	UsbHcClearRootHubPortFeature (
	IN USB_BUS *UsbBus,
	IN UINT8 PortIndex,
	IN EFI_USB_PORT_FEATURE Feature
	);

	/**
	Execute a control transfer to the device.

	@param UsbBus The USB bus driver.
	@param DevAddr The device address.
	@param DevSpeed The device speed.
	@param MaxPacket Maximum packet size of endpoint 0.
	@param Request The control transfer request.
	@param Direction The direction of data stage.
	@param Data The buffer holding data.
	@param DataLength The length of the data.
	@param TimeOut Timeout (in ms) to wait until timeout.
	@param Translator The transaction translator for low/full speed device.
	@param UsbResult The result of transfer.

	@retval EFI_SUCCESS The control transfer finished without error.
	@retval Others The control transfer failed, reason returned in UsbReslt.

	**/
	EFI_STATUS
	UsbHcControlTransfer (
	IN USB_BUS *UsbBus,
	IN UINT8 DevAddr,
	IN UINT8 DevSpeed,
	IN UINTN MaxPacket,
	IN EFI_USB_DEVICE_REQUEST *Request,
	IN EFI_USB_DATA_DIRECTION Direction,
	IN OUT VOID *Data,
	IN OUT UINTN *DataLength,
	IN UINTN TimeOut,
	IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
	OUT UINT32 *UsbResult
	);

	/**
	Execute a bulk transfer to the device's endpoint.

	@param UsbBus The USB bus driver.
	@param DevAddr The target device address.
	@param EpAddr The target endpoint address, with direction encoded in
	bit 7.
	@param DevSpeed The device's speed.
	@param MaxPacket The endpoint's max packet size.
	@param BufferNum The number of data buffer.
	@param Data Array of pointers to data buffer.
	@param DataLength The length of data buffer.
	@param DataToggle On input, the initial data toggle to use, also return
	the next toggle on output.
	@param TimeOut The time to wait until timeout.
	@param Translator The transaction translator for low/full speed device.
	@param UsbResult The result of USB execution.

	@retval EFI_SUCCESS The bulk transfer is finished without error.
	@retval Others Failed to execute bulk transfer, result in UsbResult.

	**/
	EFI_STATUS
	UsbHcBulkTransfer (
	IN USB_BUS *UsbBus,
	IN UINT8 DevAddr,
	IN UINT8 EpAddr,
	IN UINT8 DevSpeed,
	IN UINTN MaxPacket,
	IN UINT8 BufferNum,
	IN OUT VOID *Data[EFI_USB_MAX_BULK_BUFFER_NUM],
	IN OUT UINTN *DataLength,
	IN OUT UINT8 *DataToggle,
	IN UINTN TimeOut,
	IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
	OUT UINT32 *UsbResult
	);

	/**
	Queue or cancel an asynchronous interrupt transfer.

	@param UsbBus The USB bus driver.
	@param DevAddr The target device address.
	@param EpAddr The target endpoint address, with direction encoded in
	bit 7.
	@param DevSpeed The device's speed.
	@param MaxPacket The endpoint's max packet size.
	@param IsNewTransfer Whether this is a new request. If not, cancel the old
	request.
	@param DataToggle Data toggle to use on input, next toggle on output.
	@param PollingInterval The interval to poll the interrupt transfer (in ms).
	@param DataLength The length of periodical data receive.
	@param Translator The transaction translator for low/full speed device.
	@param Callback Function to call when data is received.
	@param Context The context to the callback.

	@retval EFI_SUCCESS The asynchronous transfer is queued.
	@retval Others Failed to queue the transfer.

	**/
	EFI_STATUS
	UsbHcAsyncInterruptTransfer (
	IN USB_BUS *UsbBus,
	IN UINT8 DevAddr,
	IN UINT8 EpAddr,
	IN UINT8 DevSpeed,
	IN UINTN MaxPacket,
	IN BOOLEAN IsNewTransfer,
	IN OUT UINT8 *DataToggle,
	IN UINTN PollingInterval,
	IN UINTN DataLength,
	IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
	IN EFI_ASYNC_USB_TRANSFER_CALLBACK Callback,
	IN VOID *Context OPTIONAL
	);

	/**
	Execute a synchronous interrupt transfer to the target endpoint.

	@param UsbBus The USB bus driver.
	@param DevAddr The target device address.
	@param EpAddr The target endpoint address, with direction encoded in
	bit 7.
	@param DevSpeed The device's speed.
	@param MaxPacket The endpoint's max packet size.
	@param Data Pointer to data buffer.
	@param DataLength The length of data buffer.
	@param DataToggle On input, the initial data toggle to use, also return
	the next toggle on output.
	@param TimeOut The time to wait until timeout.
	@param Translator The transaction translator for low/full speed device.
	@param UsbResult The result of USB execution.

	@retval EFI_SUCCESS The synchronous interrupt transfer is OK.
	@retval Others Failed to execute the synchronous interrupt transfer.

	**/
	EFI_STATUS
	UsbHcSyncInterruptTransfer (
	IN USB_BUS *UsbBus,
	IN UINT8 DevAddr,
	IN UINT8 EpAddr,
	IN UINT8 DevSpeed,
	IN UINTN MaxPacket,
	IN OUT VOID *Data,
	IN OUT UINTN *DataLength,
	IN OUT UINT8 *DataToggle,
	IN UINTN TimeOut,
	IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
	OUT UINT32 *UsbResult
	);

	/**
	Execute a synchronous Isochronous USB transfer.

	@param UsbBus The USB bus driver.
	@param DevAddr The target device address.
	@param EpAddr The target endpoint address, with direction encoded in
	bit 7.
	@param DevSpeed The device's speed.
	@param MaxPacket The endpoint's max packet size.
	@param BufferNum The number of data buffer.
	@param Data Array of pointers to data buffer.
	@param DataLength The length of data buffer.
	@param Translator The transaction translator for low/full speed device.
	@param UsbResult The result of USB execution.

	@retval EFI_UNSUPPORTED The isochronous transfer isn't supported now.

	**/
	EFI_STATUS
	UsbHcIsochronousTransfer (
	IN USB_BUS *UsbBus,
	IN UINT8 DevAddr,
	IN UINT8 EpAddr,
	IN UINT8 DevSpeed,
	IN UINTN MaxPacket,
	IN UINT8 BufferNum,
	IN OUT VOID *Data[EFI_USB_MAX_ISO_BUFFER_NUM],
	IN UINTN DataLength,
	IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
	OUT UINT32 *UsbResult
	);

	/**
	Queue an asynchronous isochronous transfer.

	@param UsbBus The USB bus driver.
	@param DevAddr The target device address.
	@param EpAddr The target endpoint address, with direction encoded in
	bit 7.
	@param DevSpeed The device's speed.
	@param MaxPacket The endpoint's max packet size.
	@param BufferNum The number of data buffer.
	@param Data Array of pointers to data buffer.
	@param DataLength The length of data buffer.
	@param Translator The transaction translator for low/full speed device.
	@param Callback The function to call when data is transferred.
	@param Context The context to the callback function.

	@retval EFI_UNSUPPORTED The asynchronous isochronous transfer isn't supported.

	**/
	EFI_STATUS
	UsbHcAsyncIsochronousTransfer (
	IN USB_BUS *UsbBus,
	IN UINT8 DevAddr,
	IN UINT8 EpAddr,
	IN UINT8 DevSpeed,
	IN UINTN MaxPacket,
	IN UINT8 BufferNum,
	IN OUT VOID *Data[EFI_USB_MAX_ISO_BUFFER_NUM],
	IN UINTN DataLength,
	IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
	IN EFI_ASYNC_USB_TRANSFER_CALLBACK Callback,
	IN VOID *Context
	);

	/**
	Open the USB host controller protocol BY_CHILD.

	@param Bus The USB bus driver.
	@param Child The child handle.

	@return The open protocol return.

	**/
	EFI_STATUS
	UsbOpenHostProtoByChild (
	IN USB_BUS *Bus,
	IN EFI_HANDLE Child
	);

	/**
	Close the USB host controller protocol BY_CHILD.

	@param Bus The USB bus driver.
	@param Child The child handle.

	@return None.

	**/
	VOID
	UsbCloseHostProtoByChild (
	IN USB_BUS *Bus,
	IN EFI_HANDLE Child
	);

	/**
	return the current TPL, copied from the EDKII glue lib.

	@param VOID.

	@return Current TPL.

	**/
	EFI_TPL
	UsbGetCurrentTpl (
	VOID
	);

	#endif