/** @file
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Private Header file for Usb Host Controller PEIM
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Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _EFI_EHCI_SCHED_H_
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#define _EFI_EHCI_SCHED_H_
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/**
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Initialize the schedule data structure such as frame list.
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@param Ehc The EHCI device to init schedule data for.
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@retval EFI_OUT_OF_RESOURCES Failed to allocate resource to init schedule data.
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@retval EFI_SUCCESS The schedule data is initialized.
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**/
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EFI_STATUS
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EhcInitSched (
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IN PEI_USB2_HC_DEV *Ehc
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)
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;
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/**
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Free the schedule data. It may be partially initialized.
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@param Ehc The EHCI device.
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**/
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VOID
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EhcFreeSched (
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IN PEI_USB2_HC_DEV *Ehc
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)
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;
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/**
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Link the queue head to the asynchronous schedule list.
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UEFI only supports one CTRL/BULK transfer at a time
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due to its interfaces. This simplifies the AsynList
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management: A reclamation header is always linked to
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the AsyncListAddr, the only active QH is appended to it.
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@param Ehc The EHCI device.
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@param Qh The queue head to link.
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**/
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VOID
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EhcLinkQhToAsync (
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IN PEI_USB2_HC_DEV *Ehc,
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IN PEI_EHC_QH *Qh
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)
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;
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/**
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Unlink a queue head from the asynchronous schedule list.
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Need to synchronize with hardware.
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@param Ehc The EHCI device.
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@param Qh The queue head to unlink.
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**/
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VOID
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EhcUnlinkQhFromAsync (
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IN PEI_USB2_HC_DEV *Ehc,
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IN PEI_EHC_QH *Qh
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)
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;
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/**
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Execute the transfer by polling the URB. This is a synchronous operation.
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@param Ehc The EHCI device.
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@param Urb The URB to execute.
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@param TimeOut The time to wait before abort, in millisecond.
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@retval EFI_DEVICE_ERROR The transfer failed due to transfer error.
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@retval EFI_TIMEOUT The transfer failed due to time out.
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@retval EFI_SUCCESS The transfer finished OK.
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**/
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EFI_STATUS
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EhcExecTransfer (
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IN PEI_USB2_HC_DEV *Ehc,
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IN PEI_URB *Urb,
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IN UINTN TimeOut
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)
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;
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#endif
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