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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_endpoint_create PORTABLE C */
/* 6.1.6 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function will create a physical endpoint. */
/* */
/* INPUT */
/* */
/* dcd_sim_slave Pointer to device controller */
/* endpoint Pointer to endpoint container */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* Slave Simulator Controller Driver */
/* */
/**************************************************************************/
UINT _ux_dcd_sim_slave_endpoint_create(UX_DCD_SIM_SLAVE *dcd_sim_slave, UX_SLAVE_ENDPOINT *endpoint)
{
UX_DCD_SIM_SLAVE_ED *ed;
ULONG sim_slave_endpoint_index;
/* The simulator slave controller has 16 endpoints maximum. Endpoint 0 is always control.
The other endpoints are generic. We can use the endpoint number as an index. */
sim_slave_endpoint_index = endpoint ->ux_slave_endpoint_descriptor.bEndpointAddress & ~(ULONG)UX_ENDPOINT_DIRECTION;
/* Fetch the address of the physical endpoint. */
#ifdef UX_DEVICE_BIDIRECTIONAL_ENDPOINT_SUPPORT
ed = ((endpoint -> ux_slave_endpoint_descriptor.bEndpointAddress == 0) ?
&dcd_sim_slave -> ux_dcd_sim_slave_ed[0] :
((endpoint -> ux_slave_endpoint_descriptor.bEndpointAddress & UX_ENDPOINT_DIRECTION) ?
&dcd_sim_slave -> ux_dcd_sim_slave_ed_in[sim_slave_endpoint_index] :
&dcd_sim_slave -> ux_dcd_sim_slave_ed[sim_slave_endpoint_index]));
#else
ed = &dcd_sim_slave -> ux_dcd_sim_slave_ed[sim_slave_endpoint_index];
#endif
/* Check the endpoint status, if it is free, reserve it. If not reject this endpoint. */
if ((ed -> ux_sim_slave_ed_status & UX_DCD_SIM_SLAVE_ED_STATUS_USED) == 0)
{
/* We can use this endpoint. */
ed -> ux_sim_slave_ed_status |= UX_DCD_SIM_SLAVE_ED_STATUS_USED;
/* Keep the physical endpoint address in the endpoint container. */
endpoint -> ux_slave_endpoint_ed = (VOID *) ed;
/* And its mask. */
ed -> ux_sim_slave_ed_index = sim_slave_endpoint_index;
/* Save the endpoint pointer. */
ed -> ux_sim_slave_ed_endpoint = endpoint;
/* If this is endpoint 0, it is always ready for transactions. */
if ( sim_slave_endpoint_index == 0)
ed -> ux_sim_slave_ed_status |= UX_DCD_SIM_SLAVE_ED_STATUS_TRANSFER;
/* Enable this endpoint. */
return(UX_SUCCESS);
}
/* Notify application. */
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_DCD, UX_MEMORY_INSUFFICIENT);
/* Return error to caller. */
return(UX_NO_ED_AVAILABLE);
}
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