You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
673 lines
21 KiB
673 lines
21 KiB
/** @file
|
|
|
|
The library provides the USB Standard Device Requests defined
|
|
in Usb specification 9.4 section.
|
|
|
|
Copyright (c) 2004 - 2018, 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.
|
|
|
|
**/
|
|
|
|
#include "UefiUsbLibInternal.h"
|
|
|
|
|
|
/**
|
|
Get the descriptor of the specified USB device.
|
|
|
|
Submit a USB get descriptor request for the USB device specified by UsbIo, Value,
|
|
and Index, and return the descriptor in the buffer specified by Descriptor.
|
|
The status of the transfer is returned in Status.
|
|
If UsbIo is NULL, then ASSERT().
|
|
If Descriptor is NULL, then ASSERT().
|
|
If Status is NULL, then ASSERT().
|
|
|
|
@param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
|
|
@param Value The device request value.
|
|
@param Index The device request index.
|
|
@param DescriptorLength The size, in bytes, of Descriptor.
|
|
@param Descriptor A pointer to the descriptor buffer to get.
|
|
@param Status A pointer to the status of the transfer.
|
|
|
|
@retval EFI_SUCCESS The request executed successfully.
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed because the
|
|
buffer specified by DescriptorLength and Descriptor
|
|
is not large enough to hold the result of the request.
|
|
@retval EFI_TIMEOUT A timeout occurred executing the request.
|
|
@retval EFI_DEVICE_ERROR The request failed due to a device error. The transfer
|
|
status is returned in Status.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
UsbGetDescriptor (
|
|
IN EFI_USB_IO_PROTOCOL *UsbIo,
|
|
IN UINT16 Value,
|
|
IN UINT16 Index,
|
|
IN UINT16 DescriptorLength,
|
|
OUT VOID *Descriptor,
|
|
OUT UINT32 *Status
|
|
)
|
|
{
|
|
EFI_USB_DEVICE_REQUEST DevReq;
|
|
|
|
ASSERT (UsbIo != NULL);
|
|
ASSERT (Descriptor != NULL);
|
|
ASSERT (Status != NULL);
|
|
|
|
ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
|
|
|
|
DevReq.RequestType = USB_DEV_GET_DESCRIPTOR_REQ_TYPE;
|
|
DevReq.Request = USB_REQ_GET_DESCRIPTOR;
|
|
DevReq.Value = Value;
|
|
DevReq.Index = Index;
|
|
DevReq.Length = DescriptorLength;
|
|
|
|
return UsbIo->UsbControlTransfer (
|
|
UsbIo,
|
|
&DevReq,
|
|
EfiUsbDataIn,
|
|
PcdGet32 (PcdUsbTransferTimeoutValue),
|
|
Descriptor,
|
|
DescriptorLength,
|
|
Status
|
|
);
|
|
}
|
|
|
|
|
|
/**
|
|
Set the descriptor of the specified USB device.
|
|
|
|
Submit a USB set descriptor request for the USB device specified by UsbIo,
|
|
Value, and Index, and set the descriptor using the buffer specified by DesriptorLength
|
|
and Descriptor. The status of the transfer is returned in Status.
|
|
If UsbIo is NULL, then ASSERT().
|
|
If Descriptor is NULL, then ASSERT().
|
|
If Status is NULL, then ASSERT().
|
|
|
|
@param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
|
|
@param Value The device request value.
|
|
@param Index The device request index.
|
|
@param DescriptorLength The size, in bytes, of Descriptor.
|
|
@param Descriptor A pointer to the descriptor buffer to set.
|
|
@param Status A pointer to the status of the transfer.
|
|
|
|
@retval EFI_SUCCESS The request executed successfully.
|
|
@retval EFI_TIMEOUT A timeout occurred executing the request.
|
|
@retval EFI_DEVICE_ERROR The request failed due to a device error.
|
|
The transfer status is returned in Status.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
UsbSetDescriptor (
|
|
IN EFI_USB_IO_PROTOCOL *UsbIo,
|
|
IN UINT16 Value,
|
|
IN UINT16 Index,
|
|
IN UINT16 DescriptorLength,
|
|
IN VOID *Descriptor,
|
|
OUT UINT32 *Status
|
|
)
|
|
{
|
|
EFI_USB_DEVICE_REQUEST DevReq;
|
|
|
|
ASSERT (UsbIo != NULL);
|
|
ASSERT (Descriptor != NULL);
|
|
ASSERT (Status != NULL);
|
|
|
|
ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
|
|
|
|
DevReq.RequestType = USB_DEV_SET_DESCRIPTOR_REQ_TYPE;
|
|
DevReq.Request = USB_REQ_SET_DESCRIPTOR;
|
|
DevReq.Value = Value;
|
|
DevReq.Index = Index;
|
|
DevReq.Length = DescriptorLength;
|
|
|
|
return UsbIo->UsbControlTransfer (
|
|
UsbIo,
|
|
&DevReq,
|
|
EfiUsbDataOut,
|
|
PcdGet32 (PcdUsbTransferTimeoutValue),
|
|
Descriptor,
|
|
DescriptorLength,
|
|
Status
|
|
);
|
|
}
|
|
|
|
|
|
/**
|
|
Get the interface setting of the specified USB device.
|
|
|
|
Submit a USB get interface request for the USB device specified by UsbIo,
|
|
and Interface, and place the result in the buffer specified by AlternateSetting.
|
|
The status of the transfer is returned in Status.
|
|
If UsbIo is NULL, then ASSERT().
|
|
If AlternateSetting is NULL, then ASSERT().
|
|
If Status is NULL, then ASSERT().
|
|
|
|
@param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
|
|
@param Interface The interface index value.
|
|
@param AlternateSetting A pointer to the alternate setting to be retrieved.
|
|
@param Status A pointer to the status of the transfer.
|
|
|
|
@retval EFI_SUCCESS The request executed successfully.
|
|
@retval EFI_TIMEOUT A timeout occurred executing the request.
|
|
@retval EFI_DEVICE_ERROR The request failed due to a device error.
|
|
The transfer status is returned in Status.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
UsbGetInterface (
|
|
IN EFI_USB_IO_PROTOCOL *UsbIo,
|
|
IN UINT16 Interface,
|
|
OUT UINT16 *AlternateSetting,
|
|
OUT UINT32 *Status
|
|
)
|
|
{
|
|
EFI_USB_DEVICE_REQUEST DevReq;
|
|
|
|
ASSERT (UsbIo != NULL);
|
|
ASSERT (AlternateSetting != NULL);
|
|
ASSERT (Status != NULL);
|
|
|
|
*AlternateSetting = 0;
|
|
|
|
ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
|
|
|
|
DevReq.RequestType = USB_DEV_GET_INTERFACE_REQ_TYPE;
|
|
DevReq.Request = USB_REQ_GET_INTERFACE;
|
|
DevReq.Index = Interface;
|
|
DevReq.Length = 1;
|
|
|
|
return UsbIo->UsbControlTransfer (
|
|
UsbIo,
|
|
&DevReq,
|
|
EfiUsbDataIn,
|
|
PcdGet32 (PcdUsbTransferTimeoutValue),
|
|
AlternateSetting,
|
|
1,
|
|
Status
|
|
);
|
|
}
|
|
|
|
|
|
/**
|
|
Set the interface setting of the specified USB device.
|
|
|
|
Submit a USB set interface request for the USB device specified by UsbIo, and
|
|
Interface, and set the alternate setting to the value specified by AlternateSetting.
|
|
The status of the transfer is returned in Status.
|
|
If UsbIo is NULL, then ASSERT().
|
|
If Status is NULL, then ASSERT().
|
|
|
|
@param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
|
|
@param Interface The interface index value.
|
|
@param AlternateSetting The alternate setting to be set.
|
|
@param Status A pointer to the status of the transfer.
|
|
|
|
@retval EFI_SUCCESS The request executed successfully.
|
|
@retval EFI_TIMEOUT A timeout occurred executing the request.
|
|
@retval EFI_SUCCESS The request failed due to a device error.
|
|
The transfer status is returned in Status.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
UsbSetInterface (
|
|
IN EFI_USB_IO_PROTOCOL *UsbIo,
|
|
IN UINT16 Interface,
|
|
IN UINT16 AlternateSetting,
|
|
OUT UINT32 *Status
|
|
)
|
|
{
|
|
EFI_USB_DEVICE_REQUEST DevReq;
|
|
|
|
ASSERT (UsbIo != NULL);
|
|
ASSERT (Status != NULL);
|
|
|
|
ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
|
|
|
|
DevReq.RequestType = USB_DEV_SET_INTERFACE_REQ_TYPE;
|
|
DevReq.Request = USB_REQ_SET_INTERFACE;
|
|
DevReq.Value = AlternateSetting;
|
|
DevReq.Index = Interface;
|
|
|
|
return UsbIo->UsbControlTransfer (
|
|
UsbIo,
|
|
&DevReq,
|
|
EfiUsbNoData,
|
|
PcdGet32 (PcdUsbTransferTimeoutValue),
|
|
NULL,
|
|
0,
|
|
Status
|
|
);
|
|
}
|
|
|
|
|
|
/**
|
|
Get the device configuration.
|
|
|
|
Submit a USB get configuration request for the USB device specified by UsbIo
|
|
and place the result in the buffer specified by ConfigurationValue. The status
|
|
of the transfer is returned in Status.
|
|
If UsbIo is NULL, then ASSERT().
|
|
If ConfigurationValue is NULL, then ASSERT().
|
|
If Status is NULL, then ASSERT().
|
|
|
|
@param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
|
|
@param ConfigurationValue A pointer to the device configuration to be retrieved.
|
|
@param Status A pointer to the status of the transfer.
|
|
|
|
@retval EFI_SUCCESS The request executed successfully.
|
|
@retval EFI_TIMEOUT A timeout occurred executing the request.
|
|
@retval EFI_DEVICE_ERROR The request failed due to a device error.
|
|
The transfer status is returned in Status.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
UsbGetConfiguration (
|
|
IN EFI_USB_IO_PROTOCOL *UsbIo,
|
|
OUT UINT16 *ConfigurationValue,
|
|
OUT UINT32 *Status
|
|
)
|
|
{
|
|
EFI_USB_DEVICE_REQUEST DevReq;
|
|
|
|
ASSERT (UsbIo != NULL);
|
|
ASSERT (ConfigurationValue != NULL);
|
|
ASSERT (Status != NULL);
|
|
|
|
*ConfigurationValue = 0;
|
|
|
|
ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
|
|
|
|
DevReq.RequestType = USB_DEV_GET_CONFIGURATION_REQ_TYPE;
|
|
DevReq.Request = USB_REQ_GET_CONFIG;
|
|
DevReq.Length = 1;
|
|
|
|
return UsbIo->UsbControlTransfer (
|
|
UsbIo,
|
|
&DevReq,
|
|
EfiUsbDataIn,
|
|
PcdGet32 (PcdUsbTransferTimeoutValue),
|
|
ConfigurationValue,
|
|
1,
|
|
Status
|
|
);
|
|
}
|
|
|
|
|
|
/**
|
|
Set the device configuration.
|
|
|
|
Submit a USB set configuration request for the USB device specified by UsbIo
|
|
and set the device configuration to the value specified by ConfigurationValue.
|
|
The status of the transfer is returned in Status.
|
|
If UsbIo is NULL, then ASSERT().
|
|
If Status is NULL, then ASSERT().
|
|
|
|
@param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
|
|
@param ConfigurationValue The device configuration value to be set.
|
|
@param Status A pointer to the status of the transfer.
|
|
|
|
@retval EFI_SUCCESS The request executed successfully.
|
|
@retval EFI_TIMEOUT A timeout occurred executing the request.
|
|
@retval EFI_DEVICE_ERROR The request failed due to a device error.
|
|
The transfer status is returned in Status.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
UsbSetConfiguration (
|
|
IN EFI_USB_IO_PROTOCOL *UsbIo,
|
|
IN UINT16 ConfigurationValue,
|
|
OUT UINT32 *Status
|
|
)
|
|
{
|
|
EFI_USB_DEVICE_REQUEST DevReq;
|
|
|
|
ASSERT (UsbIo != NULL);
|
|
ASSERT (Status != NULL);
|
|
|
|
ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
|
|
|
|
DevReq.RequestType = USB_DEV_SET_CONFIGURATION_REQ_TYPE;
|
|
DevReq.Request = USB_REQ_SET_CONFIG;
|
|
DevReq.Value = ConfigurationValue;
|
|
|
|
return UsbIo->UsbControlTransfer (
|
|
UsbIo,
|
|
&DevReq,
|
|
EfiUsbNoData,
|
|
PcdGet32 (PcdUsbTransferTimeoutValue),
|
|
NULL,
|
|
0,
|
|
Status
|
|
);
|
|
}
|
|
|
|
|
|
/**
|
|
Set the specified feature of the specified device.
|
|
|
|
Submit a USB set device feature request for the USB device specified by UsbIo,
|
|
Recipient, and Target to the value specified by Value. The status of the
|
|
transfer is returned in Status.
|
|
If UsbIo is NULL, then ASSERT().
|
|
If Status is NULL, then ASSERT().
|
|
|
|
@param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
|
|
@param Recipient The USB data recipient type (i.e. Device, Interface, Endpoint).
|
|
Type USB_TYPES_DEFINITION is defined in the MDE Package Industry
|
|
Standard include file Usb.h.
|
|
@param Value The value of the feature to be set.
|
|
@param Target The index of the device to be set.
|
|
@param Status A pointer to the status of the transfer.
|
|
|
|
@retval EFI_SUCCESS The request executed successfully.
|
|
@retval EFI_TIMEOUT A timeout occurred executing the request.
|
|
@retval EFI_DEVICE_ERROR The request failed due to a device error.
|
|
The transfer status is returned in Status.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
UsbSetFeature (
|
|
IN EFI_USB_IO_PROTOCOL *UsbIo,
|
|
IN USB_TYPES_DEFINITION Recipient,
|
|
IN UINT16 Value,
|
|
IN UINT16 Target,
|
|
OUT UINT32 *Status
|
|
)
|
|
{
|
|
EFI_USB_DEVICE_REQUEST DevReq;
|
|
|
|
ASSERT (UsbIo != NULL);
|
|
ASSERT (Status != NULL);
|
|
|
|
ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
|
|
|
|
switch (Recipient) {
|
|
|
|
case USB_TARGET_DEVICE:
|
|
DevReq.RequestType = USB_DEV_SET_FEATURE_REQ_TYPE_D;
|
|
break;
|
|
|
|
case USB_TARGET_INTERFACE:
|
|
DevReq.RequestType = USB_DEV_SET_FEATURE_REQ_TYPE_I;
|
|
break;
|
|
|
|
case USB_TARGET_ENDPOINT:
|
|
DevReq.RequestType = USB_DEV_SET_FEATURE_REQ_TYPE_E;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
//
|
|
// Fill device request, see USB1.1 spec
|
|
//
|
|
DevReq.Request = USB_REQ_SET_FEATURE;
|
|
DevReq.Value = Value;
|
|
DevReq.Index = Target;
|
|
|
|
|
|
return UsbIo->UsbControlTransfer (
|
|
UsbIo,
|
|
&DevReq,
|
|
EfiUsbNoData,
|
|
PcdGet32 (PcdUsbTransferTimeoutValue),
|
|
NULL,
|
|
0,
|
|
Status
|
|
);
|
|
}
|
|
|
|
|
|
/**
|
|
Clear the specified feature of the specified device.
|
|
|
|
Submit a USB clear device feature request for the USB device specified by UsbIo,
|
|
Recipient, and Target to the value specified by Value. The status of the transfer
|
|
is returned in Status.
|
|
If UsbIo is NULL, then ASSERT().
|
|
If Status is NULL, then ASSERT().
|
|
|
|
@param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
|
|
@param Recipient The USB data recipient type (i.e. Device, Interface, Endpoint).
|
|
Type USB_TYPES_DEFINITION is defined in the MDE Package Industry Standard
|
|
include file Usb.h.
|
|
@param Value The value of the feature to be cleared.
|
|
@param Target The index of the device to be cleared.
|
|
@param Status A pointer to the status of the transfer.
|
|
|
|
@retval EFI_SUCCESS The request executed successfully.
|
|
@retval EFI_TIMEOUT A timeout occurred executing the request.
|
|
@retval EFI_DEVICE_ERROR The request failed due to a device error.
|
|
The transfer status is returned in Status.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
UsbClearFeature (
|
|
IN EFI_USB_IO_PROTOCOL *UsbIo,
|
|
IN USB_TYPES_DEFINITION Recipient,
|
|
IN UINT16 Value,
|
|
IN UINT16 Target,
|
|
OUT UINT32 *Status
|
|
)
|
|
{
|
|
EFI_USB_DEVICE_REQUEST DevReq;
|
|
|
|
ASSERT (UsbIo != NULL);
|
|
ASSERT (Status != NULL);
|
|
|
|
|
|
ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
|
|
|
|
switch (Recipient) {
|
|
|
|
case USB_TARGET_DEVICE:
|
|
DevReq.RequestType = USB_DEV_CLEAR_FEATURE_REQ_TYPE_D;
|
|
break;
|
|
|
|
case USB_TARGET_INTERFACE:
|
|
DevReq.RequestType = USB_DEV_CLEAR_FEATURE_REQ_TYPE_I;
|
|
break;
|
|
|
|
case USB_TARGET_ENDPOINT:
|
|
DevReq.RequestType = USB_DEV_CLEAR_FEATURE_REQ_TYPE_E;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
//
|
|
// Fill device request, see USB1.1 spec
|
|
//
|
|
DevReq.Request = USB_REQ_CLEAR_FEATURE;
|
|
DevReq.Value = Value;
|
|
DevReq.Index = Target;
|
|
|
|
|
|
return UsbIo->UsbControlTransfer (
|
|
UsbIo,
|
|
&DevReq,
|
|
EfiUsbNoData,
|
|
PcdGet32 (PcdUsbTransferTimeoutValue),
|
|
NULL,
|
|
0,
|
|
Status
|
|
);
|
|
}
|
|
|
|
|
|
/**
|
|
Get the status of the specified device.
|
|
|
|
Submit a USB device get status request for the USB device specified by UsbIo,
|
|
Recipient, and Target and place the result in the buffer specified by DeviceStatus.
|
|
The status of the transfer is returned in Status.
|
|
If UsbIo is NULL, then ASSERT().
|
|
If DeviceStatus is NULL, then ASSERT().
|
|
If Status is NULL, then ASSERT().
|
|
|
|
@param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
|
|
@param Recipient The USB data recipient type (i.e. Device, Interface, Endpoint).
|
|
Type USB_TYPES_DEFINITION is defined in the MDE Package Industry Standard
|
|
include file Usb.h.
|
|
@param Target The index of the device to be get the status of.
|
|
@param DeviceStatus A pointer to the device status to be retrieved.
|
|
@param Status A pointer to the status of the transfer.
|
|
|
|
@retval EFI_SUCCESS The request executed successfully.
|
|
@retval EFI_TIMEOUT A timeout occurred executing the request.
|
|
@retval EFI_DEVICE_ERROR The request failed due to a device error.
|
|
The transfer status is returned in Status.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
UsbGetStatus (
|
|
IN EFI_USB_IO_PROTOCOL *UsbIo,
|
|
IN USB_TYPES_DEFINITION Recipient,
|
|
IN UINT16 Target,
|
|
OUT UINT16 *DeviceStatus,
|
|
OUT UINT32 *Status
|
|
)
|
|
{
|
|
EFI_USB_DEVICE_REQUEST DevReq;
|
|
|
|
ASSERT (UsbIo != NULL);
|
|
ASSERT (DeviceStatus != NULL);
|
|
ASSERT (Status != NULL);
|
|
|
|
ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
|
|
|
|
switch (Recipient) {
|
|
|
|
case USB_TARGET_DEVICE:
|
|
DevReq.RequestType = USB_DEV_GET_STATUS_REQ_TYPE_D;
|
|
break;
|
|
|
|
case USB_TARGET_INTERFACE:
|
|
DevReq.RequestType = USB_DEV_GET_STATUS_REQ_TYPE_I;
|
|
break;
|
|
|
|
case USB_TARGET_ENDPOINT:
|
|
DevReq.RequestType = USB_DEV_GET_STATUS_REQ_TYPE_E;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
//
|
|
// Fill device request, see USB1.1 spec
|
|
//
|
|
DevReq.Request = USB_REQ_GET_STATUS;
|
|
DevReq.Value = 0;
|
|
DevReq.Index = Target;
|
|
DevReq.Length = 2;
|
|
|
|
return UsbIo->UsbControlTransfer (
|
|
UsbIo,
|
|
&DevReq,
|
|
EfiUsbDataIn,
|
|
PcdGet32 (PcdUsbTransferTimeoutValue),
|
|
DeviceStatus,
|
|
2,
|
|
Status
|
|
);
|
|
}
|
|
|
|
|
|
/**
|
|
Clear halt feature of the specified usb endpoint.
|
|
|
|
Retrieve the USB endpoint descriptor specified by UsbIo and EndPoint.
|
|
If the USB endpoint descriptor can not be retrieved, then return EFI_NOT_FOUND.
|
|
If the endpoint descriptor is found, then clear the halt feature of this USB endpoint.
|
|
The status of the transfer is returned in Status.
|
|
If UsbIo is NULL, then ASSERT().
|
|
If Status is NULL, then ASSERT().
|
|
|
|
@param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
|
|
@param Endpoint The endpoint address.
|
|
@param Status A pointer to the status of the transfer.
|
|
|
|
@retval EFI_SUCCESS The request executed successfully.
|
|
@retval EFI_TIMEOUT A timeout occurred executing the request.
|
|
@retval EFI_DEVICE_ERROR The request failed due to a device error.
|
|
The transfer status is returned in Status.
|
|
@retval EFI_NOT_FOUND The specified USB endpoint descriptor can not be found
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
UsbClearEndpointHalt (
|
|
IN EFI_USB_IO_PROTOCOL *UsbIo,
|
|
IN UINT8 Endpoint,
|
|
OUT UINT32 *Status
|
|
)
|
|
{
|
|
EFI_STATUS Result;
|
|
EFI_USB_ENDPOINT_DESCRIPTOR EndpointDescriptor;
|
|
EFI_USB_INTERFACE_DESCRIPTOR InterfaceDescriptor;
|
|
UINT8 Index;
|
|
|
|
ASSERT (UsbIo != NULL);
|
|
ASSERT (Status != NULL);
|
|
|
|
ZeroMem (&EndpointDescriptor, sizeof (EFI_USB_ENDPOINT_DESCRIPTOR));
|
|
//
|
|
// First search the endpoint descriptor for that endpoint addr
|
|
//
|
|
Result = UsbIo->UsbGetInterfaceDescriptor (
|
|
UsbIo,
|
|
&InterfaceDescriptor
|
|
);
|
|
if (EFI_ERROR (Result)) {
|
|
return Result;
|
|
}
|
|
|
|
for (Index = 0; Index < InterfaceDescriptor.NumEndpoints; Index++) {
|
|
Result = UsbIo->UsbGetEndpointDescriptor (
|
|
UsbIo,
|
|
Index,
|
|
&EndpointDescriptor
|
|
);
|
|
if (EFI_ERROR (Result)) {
|
|
continue;
|
|
}
|
|
|
|
if (EndpointDescriptor.EndpointAddress == Endpoint) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (Index == InterfaceDescriptor.NumEndpoints) {
|
|
//
|
|
// No such endpoint
|
|
//
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
|
|
Result = UsbClearFeature (
|
|
UsbIo,
|
|
USB_TARGET_ENDPOINT,
|
|
USB_FEATURE_ENDPOINT_HALT,
|
|
EndpointDescriptor.EndpointAddress,
|
|
Status
|
|
);
|
|
|
|
return Result;
|
|
}
|