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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 */
/** */
/** Storage Class */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_class_storage.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_class_storage_device_reset PORTABLE C */
/* 6.1.11 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function will perform a reset on the device if it is a */
/* Bulk Only device. */
/* */
/* INPUT */
/* */
/* storage Pointer to storage class */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_stack_transfer_request Process transfer request */
/* _ux_host_stack_endpoint_reset Reset endpoint */
/* */
/* CALLED BY */
/* */
/* Storage Class */
/* */
/**************************************************************************/
UINT _ux_host_class_storage_device_reset(UX_HOST_CLASS_STORAGE *storage)
{
UX_ENDPOINT *control_endpoint;
UX_TRANSFER *transfer_request;
UINT status;
#ifdef UX_HOST_CLASS_STORAGE_INCLUDE_LEGACY_PROTOCOL_SUPPORT
/* We need to perform a reset only for BO devices. */
if (storage -> ux_host_class_storage_interface -> ux_interface_descriptor.bInterfaceProtocol == UX_HOST_CLASS_STORAGE_PROTOCOL_BO)
{
#endif
/* We need to get the default control endpoint transfer request pointer. */
control_endpoint = &storage -> ux_host_class_storage_device -> ux_device_control_endpoint;
transfer_request = &control_endpoint -> ux_endpoint_transfer_request;
/* We need to prevent other threads from simultaneously using the endpoint. */
_ux_host_semaphore_get_norc(&control_endpoint -> ux_endpoint_device -> ux_device_protection_semaphore, UX_WAIT_FOREVER);
/* Create a transfer_request for the RESET request. */
transfer_request -> ux_transfer_request_data_pointer = UX_NULL;
transfer_request -> ux_transfer_request_requested_length = 0;
transfer_request -> ux_transfer_request_function = UX_HOST_CLASS_STORAGE_RESET;
transfer_request -> ux_transfer_request_type = UX_REQUEST_OUT | UX_REQUEST_TYPE_CLASS | UX_REQUEST_TARGET_INTERFACE;
transfer_request -> ux_transfer_request_value = 0;
transfer_request -> ux_transfer_request_index = storage -> ux_host_class_storage_interface -> ux_interface_descriptor.bInterfaceNumber;
/* Send request to HCD layer. */
status = _ux_host_stack_transfer_request(transfer_request);
/* Per the spec, reset the endpoints as well. */
_ux_host_stack_endpoint_reset(storage -> ux_host_class_storage_bulk_in_endpoint);
_ux_host_stack_endpoint_reset(storage -> ux_host_class_storage_bulk_out_endpoint);
/* Return completion status. */
return(status);
#ifdef UX_HOST_CLASS_STORAGE_INCLUDE_LEGACY_PROTOCOL_SUPPORT
}
/* In case the device is not a BO device, we always succeed. */
return(UX_SUCCESS);
#endif
}
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