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/** @file
This file contains the definination for host controller schedule routines.
Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef _EFI_EHCI_SCHED_H_
#define _EFI_EHCI_SCHED_H_
/**
Initialize the schedule data structure such as frame list.
@param Ehc The EHCI device to init schedule data for.
@retval EFI_OUT_OF_RESOURCES Failed to allocate resource to init schedule data.
@retval EFI_SUCCESS The schedule data is initialized.
**/
EFI_STATUS
EhcInitSched (
IN USB2_HC_DEV *Ehc
);
/**
Free the schedule data. It may be partially initialized.
@param Ehc The EHCI device.
**/
VOID
EhcFreeSched (
IN USB2_HC_DEV *Ehc
);
/**
Link the queue head to the asynchronous schedule list.
UEFI only supports one CTRL/BULK transfer at a time
due to its interfaces. This simplifies the AsynList
management: A reclamation header is always linked to
the AsyncListAddr, the only active QH is appended to it.
@param Ehc The EHCI device.
@param Qh The queue head to link.
**/
VOID
EhcLinkQhToAsync (
IN USB2_HC_DEV *Ehc,
IN EHC_QH *Qh
);
/**
Unlink a queue head from the asynchronous schedule list.
Need to synchronize with hardware.
@param Ehc The EHCI device.
@param Qh The queue head to unlink.
**/
VOID
EhcUnlinkQhFromAsync (
IN USB2_HC_DEV *Ehc,
IN EHC_QH *Qh
);
/**
Link a queue head for interrupt transfer to the periodic
schedule frame list. This code is very much the same as
that in UHCI.
@param Ehc The EHCI device.
@param Qh The queue head to link.
**/
VOID
EhcLinkQhToPeriod (
IN USB2_HC_DEV *Ehc,
IN EHC_QH *Qh
);
/**
Unlink an interrupt queue head from the periodic
schedule frame list.
@param Ehc The EHCI device.
@param Qh The queue head to unlink.
**/
VOID
EhcUnlinkQhFromPeriod (
IN USB2_HC_DEV *Ehc,
IN EHC_QH *Qh
);
/**
Execute the transfer by polling the URB. This is a synchronous operation.
@param Ehc The EHCI device.
@param Urb The URB to execute.
@param TimeOut The time to wait before abort, in millisecond.
@retval EFI_DEVICE_ERROR The transfer failed due to transfer error.
@retval EFI_TIMEOUT The transfer failed due to time out.
@retval EFI_SUCCESS The transfer finished OK.
**/
EFI_STATUS
EhcExecTransfer (
IN USB2_HC_DEV *Ehc,
IN URB *Urb,
IN UINTN TimeOut
);
/**
Delete a single asynchronous interrupt transfer for
the device and endpoint.
@param Ehc The EHCI device.
@param DevAddr The address of the target device.
@param EpNum The endpoint of the target.
@param DataToggle Return the next data toggle to use.
@retval EFI_SUCCESS An asynchronous transfer is removed.
@retval EFI_NOT_FOUND No transfer for the device is found.
**/
EFI_STATUS
EhciDelAsyncIntTransfer (
IN USB2_HC_DEV *Ehc,
IN UINT8 DevAddr,
IN UINT8 EpNum,
OUT UINT8 *DataToggle
);
/**
Remove all the asynchronous interrutp transfers.
@param Ehc The EHCI device.
**/
VOID
EhciDelAllAsyncIntTransfers (
IN USB2_HC_DEV *Ehc
);
/**
Insert a single asynchronous interrupt transfer for
the device and endpoint.
@param Ehc The EHCI device.
@param DevAddr The device address.
@param EpAddr Endpoint addrress & its direction.
@param DevSpeed The device speed.
@param Toggle Initial data toggle to use.
@param MaxPacket The max packet length of the endpoint.
@param Hub The transaction translator to use.
@param DataLen The length of data buffer.
@param Callback The function to call when data is transferred.
@param Context The context to the callback.
@param Interval The interval for interrupt transfer.
@return Created URB or NULL.
**/
URB *
EhciInsertAsyncIntTransfer (
IN USB2_HC_DEV *Ehc,
IN UINT8 DevAddr,
IN UINT8 EpAddr,
IN UINT8 DevSpeed,
IN UINT8 Toggle,
IN UINTN MaxPacket,
IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Hub,
IN UINTN DataLen,
IN EFI_ASYNC_USB_TRANSFER_CALLBACK Callback,
IN VOID *Context,
IN UINTN Interval
);
/**
Interrupt transfer periodic check handler.
@param Event Interrupt event.
@param Context Pointer to USB2_HC_DEV.
**/
VOID
EFIAPI
EhcMonitorAsyncRequests (
IN EFI_EVENT Event,
IN VOID *Context
);
#endif
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