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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2026-present Eclipse ThreadX contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** USBX Component */
/** */
/** Host Stack */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_stack_endpoint_instance_delete PORTABLE C */
/* 6.1.10 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function will delete an endpoint instance. It does not delete */
/* the endpoint container but it removes the HCD endpoint and reclaims */
/* the bandwidth. */
/* */
/* INPUT */
/* */
/* endpoint Endpoint to delete */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _ux_host_stack_bandwidth_release Release bandwidth */
/* _ux_utility_semaphore_delete Semaphore delete */
/* (ux_hcd_entry_function) HCD entry function */
/* */
/* CALLED BY */
/* */
/* USBX Components */
/* */
/**************************************************************************/
VOID _ux_host_stack_endpoint_instance_delete(UX_ENDPOINT *endpoint)
{
UX_HCD *hcd;
/* Obtain the HCD for this endpoint. */
hcd = UX_DEVICE_HCD_GET(endpoint -> ux_endpoint_device);
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_STACK_ENDPOINT_INSTANCE_DELETE, endpoint -> ux_endpoint_device, endpoint, 0, 0, UX_TRACE_HOST_STACK_EVENTS, 0, 0)
/* Ensure the endpoint had its physical ED allocated. */
if (endpoint -> ux_endpoint_ed != UX_NULL)
{
/* Destroy this endpoint. */
hcd -> ux_hcd_entry_function(hcd, UX_HCD_DESTROY_ENDPOINT, (VOID *) endpoint);
/* Free the semaphore previously attached to the transfer_request of this endpoint. */
_ux_host_semaphore_delete(&endpoint -> ux_endpoint_transfer_request.ux_transfer_request_semaphore);
}
/* If the endpoint requested guaranteed bandwidth, free it now. */
switch ((endpoint -> ux_endpoint_descriptor.bmAttributes) & UX_MASK_ENDPOINT_TYPE)
{
case UX_CONTROL_ENDPOINT:
case UX_BULK_ENDPOINT:
break;
default:
/* Reclaim its bandwidth. */
_ux_host_stack_bandwidth_release(hcd, endpoint);
}
/* If trace is enabled, register this object. */
UX_TRACE_OBJECT_UNREGISTER(endpoint);
/* Return to caller. */
return;
}
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