/***************************************************************************
 * 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                                                        */
/**                                                                       */
/**   Device RNDIS Class                                                  */
/**                                                                       */
/**************************************************************************/
/**************************************************************************/

#define UX_SOURCE_CODE


/* Include necessary system files.  */

#include "ux_api.h"
#include "ux_device_class_rndis.h"
#include "ux_device_stack.h"


#if !defined(UX_DEVICE_STANDALONE)
/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _ux_device_class_rndis_interrupt_thread             PORTABLE C      */
/*                                                           6.1.12       */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Chaoqiong Xiao, Microsoft Corporation                               */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function is the thread of the rndis interrupt endpoint         */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    rndis_class                             Address of rndis class      */
/*                                                container               */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    None                                                                */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    _ux_device_stack_transfer_request     Request transfer              */
/*    _ux_utility_event_flags_get           Get event flags               */
/*    _ux_device_thread_suspend             Suspend thread                */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    ThreadX                                                             */
/*                                                                        */
/**************************************************************************/
VOID  _ux_device_class_rndis_interrupt_thread(ULONG rndis_class)
{

UX_SLAVE_CLASS                  *class_ptr;
UX_SLAVE_CLASS_RNDIS            *rndis;
UX_SLAVE_DEVICE                 *device;
UX_SLAVE_TRANSFER               *transfer_request;
UINT                            status;
ULONG                           actual_flags;

    /* Cast properly the rndis instance.  */
    UX_THREAD_EXTENSION_PTR_GET(class_ptr, UX_SLAVE_CLASS, rndis_class)

    /* Get the rndis instance from this class container.  */
    rndis =  (UX_SLAVE_CLASS_RNDIS *) class_ptr -> ux_slave_class_instance;

    /* Get the pointer to the device.  */
    device =  &_ux_system_slave -> ux_system_slave_device;

    /* This thread runs forever but can be suspended or resumed.  */
    while(1)
    {

        /* All RNDIS events are on the interrupt endpoint IN, from the host.  */
        transfer_request =  &rndis -> ux_slave_class_rndis_interrupt_endpoint -> ux_slave_endpoint_transfer_request;

        /* As long as the device is in the CONFIGURED state.  */
        while (device -> ux_slave_device_state == UX_DEVICE_CONFIGURED)
        {


            /* Wait until we have a event sent by the application. We do not treat yet the case where a timeout based
               on the interrupt pipe frequency or a change in the idle state forces us to send an empty report.  */
            status =  _ux_utility_event_flags_get(&rndis -> ux_slave_class_rndis_event_flags_group, (UX_DEVICE_CLASS_RNDIS_NEW_INTERRUPT_EVENT |
                                                                                            UX_DEVICE_CLASS_RNDIS_NEW_DEVICE_STATE_CHANGE_EVENT),
                                                                                            UX_OR_CLEAR, &actual_flags, UX_WAIT_FOREVER);

                                                                                            /* If error log is enabled, insert this error message into the log buffer.  */

            /* Check the completion code. */
            if (status == UX_SUCCESS && (actual_flags & UX_DEVICE_CLASS_RNDIS_NEW_DEVICE_STATE_CHANGE_EVENT) == 0)
            {

                /* Send the request to the device controller.  */
                status =  _ux_device_stack_transfer_request(transfer_request, UX_DEVICE_CLASS_RNDIS_INTERRUPT_RESPONSE_LENGTH,
                                                                    UX_DEVICE_CLASS_RNDIS_INTERRUPT_RESPONSE_LENGTH);

                /* Check error code. */
                if (status != UX_SUCCESS)

                    /* Error trap. */
                    _ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, status);
            }
        }

    /* We need to suspend ourselves. We will be resumed by the device enumeration module.  */
    _ux_device_thread_suspend(&rndis -> ux_slave_class_rndis_interrupt_thread);

    }
}
#endif