mirror of https://github.com/acidanthera/audk.git
194 lines
4.3 KiB
C
194 lines
4.3 KiB
C
/** @file
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This file contains the definination for host controller schedule routines.
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Copyright (c) 2007, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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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 USB2_HC_DEV *Ehc
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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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@return None
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**/
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VOID
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EhcFreeSched (
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IN USB2_HC_DEV *Ehc
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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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@return None.
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**/
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VOID
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EhcLinkQhToAsync (
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IN USB2_HC_DEV *Ehc,
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IN EHC_QH *Qh
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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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@return None.
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**/
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VOID
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EhcUnlinkQhFromAsync (
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IN USB2_HC_DEV *Ehc,
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IN EHC_QH *Qh
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);
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/**
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Link a queue head for interrupt transfer to the periodic
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schedule frame list. This code is very much the same as
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that in UHCI.
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@param Ehc The EHCI device.
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@param Qh The queue head to link.
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@return None.
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**/
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VOID
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EhcLinkQhToPeriod (
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IN USB2_HC_DEV *Ehc,
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IN EHC_QH *Qh
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);
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/**
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Unlink an interrupt queue head from the periodic
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schedule frame list.
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@param Ehc The EHCI device.
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@param Qh The queue head to unlink.
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@return None.
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**/
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VOID
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EhcUnlinkQhFromPeriod (
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IN USB2_HC_DEV *Ehc,
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IN EHC_QH *Qh
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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 USB2_HC_DEV *Ehc,
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IN URB *Urb,
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IN UINTN TimeOut
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);
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/**
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Delete a single asynchronous interrupt transfer for
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the device and endpoint.
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@param Ehc The EHCI device.
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@param DevAddr The address of the target device.
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@param EpNum The endpoint of the target.
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@param DataToggle Return the next data toggle to use.
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@retval EFI_SUCCESS An asynchronous transfer is removed.
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@retval EFI_NOT_FOUND No transfer for the device is found.
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**/
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EFI_STATUS
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EhciDelAsyncIntTransfer (
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IN USB2_HC_DEV *Ehc,
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IN UINT8 DevAddr,
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IN UINT8 EpNum,
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OUT UINT8 *DataToggle
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);
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/**
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Remove all the asynchronous interrutp transfers.
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@param Ehc The EHCI device.
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@return None.
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**/
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VOID
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EhciDelAllAsyncIntTransfers (
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IN USB2_HC_DEV *Ehc
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);
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/**
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Interrupt transfer periodic check handler.
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@param Event Interrupt event.
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@param Context Pointer to USB2_HC_DEV.
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@return None.
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**/
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VOID
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EhcMoniteAsyncRequests (
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IN EFI_EVENT Event,
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IN VOID *Context
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);
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#endif
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