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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 */
/** */
/** Slave Simulator Controller Driver */
/** */
/**************************************************************************/
/**************************************************************************/
#define UX_SOURCE_CODE
/* Include necessary system files. */
#include "ux_api.h"
#include "ux_dcd_sim_slave.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_dcd_sim_slave_transfer_request PORTABLE C */
/* 6.1.10 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function will initiate a transfer to a specific endpoint. */
/* If the endpoint is IN, the endpoint register will be set to accept */
/* the request. */
/* */
/* If the endpoint is IN, the endpoint FIFO will be filled with the */
/* buffer and the endpoint register set. */
/* */
/* INPUT */
/* */
/* dcd_sim_slave Pointer to device controller */
/* transfer_request Pointer to transfer request */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_utility_semaphore_get Get semaphore */
/* _ux_dcd_sim_slave_transfer_abort Abort transfer */
/* */
/* CALLED BY */
/* */
/* Slave Simulator Controller Driver */
/* */
/**************************************************************************/
UINT _ux_dcd_sim_slave_transfer_request(UX_DCD_SIM_SLAVE *dcd_sim_slave, UX_SLAVE_TRANSFER *transfer_request)
{
UX_SLAVE_ENDPOINT *endpoint;
UX_DCD_SIM_SLAVE_ED *ed;
UINT status;
/* Get the pointer to the logical endpoint from the transfer request. */
endpoint = transfer_request -> ux_slave_transfer_request_endpoint;
/* Get the slave endpoint. */
ed = (UX_DCD_SIM_SLAVE_ED *) endpoint -> ux_slave_endpoint_ed;
/* We have a request for a OUT or IN transaction from the host.
If the endpoint is a Control endpoint, all this is happening under Interrupt and there is no
thread to suspend. */
if (ed -> ux_sim_slave_ed_index != 0)
{
/* Set the ED to TRANSFER status. */
ed -> ux_sim_slave_ed_status |= UX_DCD_SIM_SLAVE_ED_STATUS_TRANSFER;
/* We should wait for the semaphore to wake us up. */
status = _ux_device_semaphore_get(&transfer_request -> ux_slave_transfer_request_semaphore,
transfer_request -> ux_slave_transfer_request_timeout);
/* Check the completion code. */
if (status != UX_SUCCESS)
{
_ux_dcd_sim_slave_transfer_abort(dcd_sim_slave, transfer_request);
transfer_request -> ux_slave_transfer_request_status = UX_TRANSFER_STATUS_COMPLETED;
return(status);
}
/* ED TRANSFER has been cleared before semaphore wakeup. */
/* Check the transfer request completion code. We may have had a BUS reset or
a device disconnection. */
if (transfer_request -> ux_slave_transfer_request_completion_code != UX_SUCCESS)
return(transfer_request -> ux_slave_transfer_request_completion_code);
}
/* Return to caller with success. */
return(UX_SUCCESS);
}
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