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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 */
/** */
/** Device CDC_ECM Class */
/** */
/**************************************************************************/
/**************************************************************************/
#define UX_SOURCE_CODE
/* Include necessary system files. */
#include "ux_api.h"
#include "ux_device_class_cdc_ecm.h"
#include "ux_device_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_device_class_cdc_ecm_initialize PORTABLE C */
/* 6.3.0 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function initializes the USB CDC_ECM device. */
/* */
/* INPUT */
/* */
/* command Pointer to cdc_ecm command */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_utility_memory_allocate Allocate memory */
/* _ux_utility_memory_free Free memory */
/* _ux_utility_mutex_create Create Mutex */
/* _ux_device_mutex_delete Delete Mutex */
/* _ux_utility_event_flags_create Create Flag group */
/* _ux_utility_event_flags_delete Delete Flag group */
/* _ux_device_thread_create Create Thread */
/* _ux_device_thread_delete Delete Thread */
/* */
/* CALLED BY */
/* */
/* USBX Source Code */
/* */
/**************************************************************************/
UINT _ux_device_class_cdc_ecm_initialize(UX_SLAVE_CLASS_COMMAND *command)
{
#if defined(UX_DEVICE_STANDALONE)
UX_PARAMETER_NOT_USED(command);
return(UX_FUNCTION_NOT_SUPPORTED);
#else
UX_SLAVE_CLASS_CDC_ECM *cdc_ecm;
UX_SLAVE_CLASS_CDC_ECM_PARAMETER *cdc_ecm_parameter;
UX_SLAVE_CLASS *class_ptr;
UINT status;
/* Get the class container. */
class_ptr = command -> ux_slave_class_command_class_ptr;
/* Create an instance of the device cdc_ecm class. */
cdc_ecm = _ux_utility_memory_allocate(UX_NO_ALIGN, UX_REGULAR_MEMORY, sizeof(UX_SLAVE_CLASS_CDC_ECM));
/* Check for successful allocation. */
if (cdc_ecm == UX_NULL)
return(UX_MEMORY_INSUFFICIENT);
/* Create a mutex to protect the CDC_ECM thread and the application messing up the transmit queue. */
status = _ux_utility_mutex_create(&cdc_ecm -> ux_slave_class_cdc_ecm_mutex, "ux_slave_class_cdc_ecm_mutex");
if (status != UX_SUCCESS)
{
_ux_utility_memory_free(cdc_ecm);
return(UX_MUTEX_ERROR);
}
/* Assume good result. */
status = UX_SUCCESS;
#if UX_DEVICE_ENDPOINT_BUFFER_OWNER == 1
/* Allocate buffer for endpoints. */
UX_ASSERT(!UX_DEVICE_CLASS_CDC_ECM_ENDPOINT_BUFFER_SIZE_CALC_OVERFLOW);
cdc_ecm -> ux_device_class_cdc_ecm_endpoint_buffer =
_ux_utility_memory_allocate(UX_NO_ALIGN, UX_CACHE_SAFE_MEMORY,
UX_DEVICE_CLASS_CDC_ECM_ENDPOINT_BUFFER_SIZE);
if (cdc_ecm -> ux_device_class_cdc_ecm_endpoint_buffer == UX_NULL)
status = (UX_MEMORY_INSUFFICIENT);
#endif
/* Allocate some memory for the bulk out thread stack. */
cdc_ecm -> ux_slave_class_cdc_ecm_bulkout_thread_stack =
_ux_utility_memory_allocate(UX_NO_ALIGN, UX_REGULAR_MEMORY, UX_THREAD_STACK_SIZE);
if (cdc_ecm -> ux_slave_class_cdc_ecm_bulkout_thread_stack == UX_NULL)
status = (UX_MEMORY_INSUFFICIENT);
/* Allocate some memory for the interrupt thread stack. */
if (status == UX_SUCCESS)
{
cdc_ecm -> ux_slave_class_cdc_ecm_interrupt_thread_stack =
_ux_utility_memory_allocate(UX_NO_ALIGN, UX_REGULAR_MEMORY, UX_THREAD_STACK_SIZE);
/* Check for successful allocation. */
if (cdc_ecm -> ux_slave_class_cdc_ecm_interrupt_thread_stack == UX_NULL)
status = (UX_MEMORY_INSUFFICIENT);
}
/* Allocate some memory for the bulk in thread stack. */
if (status == UX_SUCCESS)
{
cdc_ecm -> ux_slave_class_cdc_ecm_bulkin_thread_stack =
_ux_utility_memory_allocate(UX_NO_ALIGN, UX_REGULAR_MEMORY, UX_THREAD_STACK_SIZE);
/* Check for successful allocation. */
if (cdc_ecm -> ux_slave_class_cdc_ecm_bulkin_thread_stack == UX_NULL)
status = (UX_MEMORY_INSUFFICIENT);
}
/* Interrupt endpoint treatment needs to be running in a different thread. So start
a new thread. We pass a pointer to the cdc_ecm instance to the new thread. This thread
does not start until we have a instance of the class. */
if (status == UX_SUCCESS)
{
status = _ux_device_thread_create(&cdc_ecm -> ux_slave_class_cdc_ecm_interrupt_thread , "ux_slave_class_cdc_ecm_interrupt_thread",
_ux_device_class_cdc_ecm_interrupt_thread,
(ULONG) (ALIGN_TYPE) class_ptr, (VOID *) cdc_ecm -> ux_slave_class_cdc_ecm_interrupt_thread_stack ,
UX_THREAD_STACK_SIZE, UX_THREAD_PRIORITY_CLASS,
UX_THREAD_PRIORITY_CLASS, UX_NO_TIME_SLICE, UX_DONT_START);
if (status != UX_SUCCESS)
status = (UX_THREAD_ERROR);
}
UX_THREAD_EXTENSION_PTR_SET(&(cdc_ecm -> ux_slave_class_cdc_ecm_interrupt_thread), class_ptr)
/* Check the creation of this thread. */
if (status == UX_SUCCESS)
{
/* Bulk endpoint treatment needs to be running in a different thread. So start
a new thread. We pass a pointer to the cdc_ecm instance to the new thread. This thread
does not start until we have a instance of the class. */
status = _ux_device_thread_create(&cdc_ecm -> ux_slave_class_cdc_ecm_bulkout_thread , "ux_slave_class_cdc_ecm_bulkout_thread",
_ux_device_class_cdc_ecm_bulkout_thread,
(ULONG) (ALIGN_TYPE) class_ptr, (VOID *) cdc_ecm -> ux_slave_class_cdc_ecm_bulkout_thread_stack ,
UX_THREAD_STACK_SIZE, UX_THREAD_PRIORITY_CLASS,
UX_THREAD_PRIORITY_CLASS, UX_NO_TIME_SLICE, UX_DONT_START);
if (status != UX_SUCCESS)
status = (UX_THREAD_ERROR);
else
{
UX_THREAD_EXTENSION_PTR_SET(&(cdc_ecm -> ux_slave_class_cdc_ecm_bulkout_thread), class_ptr)
/* Bulk endpoint treatment needs to be running in a different thread. So start
a new thread. We pass a pointer to the cdc_ecm instance to the new thread. This thread
does not start until we have a instance of the class. */
status = _ux_device_thread_create(&cdc_ecm -> ux_slave_class_cdc_ecm_bulkin_thread , "ux_slave_class_cdc_ecm_bulkin_thread",
_ux_device_class_cdc_ecm_bulkin_thread,
(ULONG) (ALIGN_TYPE) class_ptr, (VOID *) cdc_ecm -> ux_slave_class_cdc_ecm_bulkin_thread_stack ,
UX_THREAD_STACK_SIZE, UX_THREAD_PRIORITY_CLASS,
UX_THREAD_PRIORITY_CLASS, UX_NO_TIME_SLICE, UX_DONT_START);
if (status != UX_SUCCESS)
status = (UX_THREAD_ERROR);
else
{
UX_THREAD_EXTENSION_PTR_SET(&(cdc_ecm -> ux_slave_class_cdc_ecm_bulkin_thread), class_ptr)
/* Create a event flag group for the cdc_ecm class to synchronize with the event interrupt thread. */
status = _ux_utility_event_flags_create(&cdc_ecm -> ux_slave_class_cdc_ecm_event_flags_group, "ux_device_class_cdc_ecm_event_flag");
if (status != UX_SUCCESS)
status = (UX_EVENT_ERROR);
else
{
/* Save the address of the CDC_ECM instance inside the CDC_ECM container. */
class_ptr -> ux_slave_class_instance = (VOID *) cdc_ecm;
/* Get the pointer to the application parameters for the cdc_ecm class. */
cdc_ecm_parameter = command -> ux_slave_class_command_parameter;
/* Store the start and stop signals if needed by the application. */
cdc_ecm -> ux_slave_class_cdc_ecm_parameter.ux_slave_class_cdc_ecm_instance_activate = cdc_ecm_parameter -> ux_slave_class_cdc_ecm_instance_activate;
cdc_ecm -> ux_slave_class_cdc_ecm_parameter.ux_slave_class_cdc_ecm_instance_deactivate = cdc_ecm_parameter -> ux_slave_class_cdc_ecm_instance_deactivate;
/* Copy the local node ID. */
_ux_utility_memory_copy(cdc_ecm -> ux_slave_class_cdc_ecm_local_node_id, cdc_ecm_parameter -> ux_slave_class_cdc_ecm_parameter_local_node_id,
UX_DEVICE_CLASS_CDC_ECM_NODE_ID_LENGTH); /* Use case of memcpy is verified. */
/* Copy the remote node ID. */
_ux_utility_memory_copy(cdc_ecm -> ux_slave_class_cdc_ecm_remote_node_id, cdc_ecm_parameter -> ux_slave_class_cdc_ecm_parameter_remote_node_id,
UX_DEVICE_CLASS_CDC_ECM_NODE_ID_LENGTH); /* Use case of memcpy is verified. */
/* Store the rest of the parameters as they are in the local instance. */
_ux_utility_memory_copy(&cdc_ecm -> ux_slave_class_cdc_ecm_parameter, cdc_ecm_parameter, sizeof (UX_SLAVE_CLASS_CDC_ECM_PARAMETER)); /* Use case of memcpy is verified. */
return(UX_SUCCESS);
}
_ux_device_thread_delete(&cdc_ecm -> ux_slave_class_cdc_ecm_bulkin_thread);
}
_ux_device_thread_delete(&cdc_ecm -> ux_slave_class_cdc_ecm_bulkout_thread);
}
_ux_device_thread_delete(&cdc_ecm -> ux_slave_class_cdc_ecm_interrupt_thread);
}
/* Free allocated resources. */
if (cdc_ecm -> ux_slave_class_cdc_ecm_bulkin_thread_stack)
_ux_utility_memory_free(cdc_ecm -> ux_slave_class_cdc_ecm_bulkin_thread_stack);
if (cdc_ecm -> ux_slave_class_cdc_ecm_interrupt_thread_stack)
_ux_utility_memory_free(cdc_ecm -> ux_slave_class_cdc_ecm_interrupt_thread_stack);
if (cdc_ecm -> ux_slave_class_cdc_ecm_bulkout_thread_stack)
_ux_utility_memory_free(cdc_ecm -> ux_slave_class_cdc_ecm_bulkout_thread_stack);
#if UX_DEVICE_ENDPOINT_BUFFER_OWNER == 1
if (cdc_ecm -> ux_device_class_cdc_ecm_endpoint_buffer)
_ux_utility_memory_free(cdc_ecm -> ux_device_class_cdc_ecm_endpoint_buffer);
#endif
_ux_device_mutex_delete(&cdc_ecm -> ux_slave_class_cdc_ecm_mutex);
_ux_utility_memory_free(cdc_ecm);
/* Return completion status. */
return(status);
#endif
}
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