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/** @file
Common Library for PEI USB.
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "UsbPeim.h"
#include "PeiUsbLib.h"
/**
Clear a given usb feature.
@param PeiServices General-purpose services that are available to every PEIM.
@param UsbIoPpi Indicates the PEI_USB_IO_PPI instance.
@param Recipient The recipient of ClearFeature Request, should be one of Device/Interface/Endpoint.
@param Value Request Value.
@param Target Request Index.
@retval EFI_SUCCESS Usb feature is cleared successfully.
@retval EFI_DEVICE_ERROR Cannot clear the usb feature due to a hardware error.
@retval Others Other failure occurs.
**/
EFI_STATUS
PeiUsbClearDeviceFeature (
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_USB_IO_PPI *UsbIoPpi,
IN EFI_USB_RECIPIENT Recipient,
IN UINT16 Value,
IN UINT16 Target
)
{
EFI_USB_DEVICE_REQUEST DevReq;
ASSERT (UsbIoPpi != NULL);
switch (Recipient) {
case EfiUsbDevice:
DevReq.RequestType = USB_DEV_CLEAR_FEATURE_REQ_TYPE_D;
break;
case EfiUsbInterface:
DevReq.RequestType = USB_DEV_CLEAR_FEATURE_REQ_TYPE_I;
break;
case EfiUsbEndpoint:
DevReq.RequestType = USB_DEV_CLEAR_FEATURE_REQ_TYPE_E;
break;
}
DevReq.Request = USB_DEV_CLEAR_FEATURE;
DevReq.Value = Value;
DevReq.Index = Target;
DevReq.Length = 0;
return UsbIoPpi->UsbControlTransfer (
PeiServices,
UsbIoPpi,
&DevReq,
EfiUsbNoData,
PcdGet32 (PcdUsbTransferTimeoutValue),
NULL,
0
);
}
/**
Clear Endpoint Halt.
@param PeiServices General-purpose services that are available to every PEIM.
@param UsbIoPpi Indicates the PEI_USB_IO_PPI instance.
@param EndpointAddress The endpoint address.
@retval EFI_SUCCESS Endpoint halt is cleared successfully.
@retval EFI_DEVICE_ERROR Cannot clear the endpoint halt status due to a hardware error.
@retval Others Other failure occurs.
**/
EFI_STATUS
PeiUsbClearEndpointHalt (
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_USB_IO_PPI *UsbIoPpi,
IN UINT8 EndpointAddress
)
{
EFI_STATUS Status;
EFI_USB_INTERFACE_DESCRIPTOR *InterfaceDesc;
EFI_USB_ENDPOINT_DESCRIPTOR *EndpointDescriptor;
UINT8 EndpointIndex;
//
// Check its interface
//
Status = UsbIoPpi->UsbGetInterfaceDescriptor (
PeiServices,
UsbIoPpi,
&InterfaceDesc
);
if (EFI_ERROR (Status)) {
return Status;
}
for (EndpointIndex = 0; EndpointIndex < InterfaceDesc->NumEndpoints; EndpointIndex++) {
Status = UsbIoPpi->UsbGetEndpointDescriptor (PeiServices, UsbIoPpi, EndpointIndex, &EndpointDescriptor);
if (EFI_ERROR (Status)) {
return EFI_INVALID_PARAMETER;
}
if (EndpointDescriptor->EndpointAddress == EndpointAddress) {
break;
}
}
if (EndpointIndex == InterfaceDesc->NumEndpoints) {
return EFI_INVALID_PARAMETER;
}
Status = PeiUsbClearDeviceFeature (
PeiServices,
UsbIoPpi,
EfiUsbEndpoint,
EfiUsbEndpointHalt,
EndpointAddress
);
return Status;
}
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