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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 Simulator Controller Driver */
/** */
/**************************************************************************/
/**************************************************************************/
#define UX_SOURCE_CODE
/* Include necessary system files. */
#include "ux_api.h"
#include "ux_hcd_sim_host.h"
#if defined(UX_HOST_STANDALONE)
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_hcd_sim_host_transfer_run PORTABLE C */
/* 6.1.10 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is the handler for all the transactions on the USB. */
/* The transfer request passed as parameter contains the endpoint and */
/* the device descriptors in addition to the type of transaction de */
/* be executed. This function routes the transfer request to */
/* according to the type of transfer to be executed. */
/* */
/* It's for standalone mode. */
/* */
/* INPUT */
/* */
/* hcd_sim_host Pointer to host controller */
/* transfer_request Pointer to transfer request */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_hcd_sim_host_request_bulk_transfer Request bulk transfer */
/* _ux_hcd_sim_host_request_control_transfer Request control */
/* transfer */
/* _ux_hcd_sim_host_request_interrupt_transfer Request interrupt */
/* transfer */
/* _ux_hcd_sim_host_request_isochronous_transfer Request isochronous */
/* transfer */
/* */
/* CALLED BY */
/* */
/* Host Simulator Controller Driver */
/* */
/**************************************************************************/
UINT _ux_hcd_sim_host_transfer_run(UX_HCD_SIM_HOST *hcd_sim_host, UX_TRANSFER *transfer_request)
{
UX_INTERRUPT_SAVE_AREA
UX_ENDPOINT *endpoint;
UX_HCD_SIM_HOST_ED *ed;
UINT status = 0;
/* Get the pointer to the Endpoint. */
endpoint = (UX_ENDPOINT *) transfer_request -> ux_transfer_request_endpoint;
/* Sanity check. */
if (endpoint == UX_NULL)
return(UX_STATE_EXIT);
/* Get ED. */
ed = (UX_HCD_SIM_HOST_ED *)endpoint -> ux_endpoint_ed;
/* Sanity check. */
if (ed == UX_NULL)
return(UX_STATE_EXIT);
UX_DISABLE
/* If transfer started, check status. */
if (ed -> ux_sim_host_ed_status & UX_HCD_SIM_HOST_ED_TRANSFER)
{
if (ed -> ux_sim_host_ed_head_td != ed -> ux_sim_host_ed_tail_td)
{
UX_RESTORE
return(UX_STATE_WAIT);
}
/* Check if it's transfer waiting state. */
if (transfer_request -> ux_transfer_request_status != UX_TRANSFER_STATUS_NOT_PENDING)
{
/* Yes, polling pending status, report and transfer done. */
ed -> ux_sim_host_ed_status &= ~UX_HCD_SIM_HOST_ED_TRANSFER;
UX_RESTORE
return(UX_STATE_NEXT);
}
/* Maybe transfer completed but state not reported yet. */
}
ed -> ux_sim_host_ed_status |= UX_HCD_SIM_HOST_ED_TRANSFER;
transfer_request -> ux_transfer_request_status = UX_TRANSFER_STATUS_PENDING;
UX_RESTORE
/* We reset the actual length field of the transfer request as a safety measure. */
transfer_request -> ux_transfer_request_actual_length = 0;
/* Isolate the endpoint type and route the transfer request. */
switch ((endpoint -> ux_endpoint_descriptor.bmAttributes) & UX_MASK_ENDPOINT_TYPE)
{
case UX_CONTROL_ENDPOINT:
status = _ux_hcd_sim_host_request_control_transfer(hcd_sim_host, transfer_request);
break;
case UX_BULK_ENDPOINT:
status = _ux_hcd_sim_host_request_bulk_transfer(hcd_sim_host, transfer_request);
break;
case UX_INTERRUPT_ENDPOINT:
status = _ux_hcd_sim_host_request_interrupt_transfer(hcd_sim_host, transfer_request);
break;
case UX_ISOCHRONOUS_ENDPOINT:
status = _ux_hcd_sim_host_request_isochronous_transfer(hcd_sim_host, transfer_request);
break;
}
return (status == UX_SUCCESS) ? (UX_STATE_WAIT) : (UX_STATE_ERROR);
}
#endif
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