/** @file | |
This file contains the definination for host controller schedule routines. | |
Copyright (c) 2007 - 2009, 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 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 | |
); | |
/** | |
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 |