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/** @file
Private Header file for Usb Host Controller PEIM
Copyright (c) 2010 - 2018, 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_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 PEI_USB2_HC_DEV *Ehc
)
;
/**
Free the schedule data. It may be partially initialized.
@param Ehc The EHCI device.
**/
VOID
EhcFreeSched (
IN PEI_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 PEI_USB2_HC_DEV *Ehc,
IN PEI_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 PEI_USB2_HC_DEV *Ehc,
IN PEI_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 PEI_USB2_HC_DEV *Ehc,
IN PEI_URB *Urb,
IN UINTN TimeOut
)
;
#endif
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