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git.proxmox.com Git - mirror_edk2.git/blob - MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.h
3 This file contains the definination for host controller schedule routines.
5 Copyright (c) 2007 - 2009, Intel Corporation
6 All rights reserved. This program and the accompanying materials
7 are licensed and made available under the terms and conditions of the BSD License
8 which accompanies this distribution. The full text of the license may be found at
9 http://opensource.org/licenses/bsd-license.php
11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
16 #ifndef _EFI_EHCI_SCHED_H_
17 #define _EFI_EHCI_SCHED_H_
21 Initialize the schedule data structure such as frame list.
23 @param Ehc The EHCI device to init schedule data for.
25 @retval EFI_OUT_OF_RESOURCES Failed to allocate resource to init schedule data.
26 @retval EFI_SUCCESS The schedule data is initialized.
36 Free the schedule data. It may be partially initialized.
38 @param Ehc The EHCI device.
48 Link the queue head to the asynchronous schedule list.
49 UEFI only supports one CTRL/BULK transfer at a time
50 due to its interfaces. This simplifies the AsynList
51 management: A reclamation header is always linked to
52 the AsyncListAddr, the only active QH is appended to it.
54 @param Ehc The EHCI device.
55 @param Qh The queue head to link.
66 Unlink a queue head from the asynchronous schedule list.
67 Need to synchronize with hardware.
69 @param Ehc The EHCI device.
70 @param Qh The queue head to unlink.
74 EhcUnlinkQhFromAsync (
81 Link a queue head for interrupt transfer to the periodic
82 schedule frame list. This code is very much the same as
85 @param Ehc The EHCI device.
86 @param Qh The queue head to link.
97 Unlink an interrupt queue head from the periodic
100 @param Ehc The EHCI device.
101 @param Qh The queue head to unlink.
105 EhcUnlinkQhFromPeriod (
113 Execute the transfer by polling the URB. This is a synchronous operation.
115 @param Ehc The EHCI device.
116 @param Urb The URB to execute.
117 @param TimeOut The time to wait before abort, in millisecond.
119 @retval EFI_DEVICE_ERROR The transfer failed due to transfer error.
120 @retval EFI_TIMEOUT The transfer failed due to time out.
121 @retval EFI_SUCCESS The transfer finished OK.
133 Delete a single asynchronous interrupt transfer for
134 the device and endpoint.
136 @param Ehc The EHCI device.
137 @param DevAddr The address of the target device.
138 @param EpNum The endpoint of the target.
139 @param DataToggle Return the next data toggle to use.
141 @retval EFI_SUCCESS An asynchronous transfer is removed.
142 @retval EFI_NOT_FOUND No transfer for the device is found.
146 EhciDelAsyncIntTransfer (
150 OUT UINT8
*DataToggle
155 Remove all the asynchronous interrutp transfers.
157 @param Ehc The EHCI device.
161 EhciDelAllAsyncIntTransfers (
167 Interrupt transfer periodic check handler.
169 @param Event Interrupt event.
170 @param Context Pointer to USB2_HC_DEV.
175 EhcMonitorAsyncRequests (