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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* Copyright (c) 2026-present Eclipse ThreadX contributors |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** USBX Component */ |
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/** */ |
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/** CDC ECM Class */ |
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/** */ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/* Include necessary system files. */ |
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#define UX_SOURCE_CODE |
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#include "ux_api.h" |
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#include "ux_host_class_cdc_ecm.h" |
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#include "ux_host_stack.h" |
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UX_HOST_CLASS_CDC_ECM_NX_ETHERNET_POOL_ALLOCSIZE_ASSERT |
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#if !defined(UX_HOST_STANDALONE) |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _ux_host_class_cdc_ecm_activate PORTABLE C */ |
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/* 6.2.0 */ |
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/* AUTHOR */ |
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/* */ |
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/* Chaoqiong Xiao, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function creates the cdc_ecm instance, configure the device. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* command CDC ECM class command pointer */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* Completion Status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _ux_host_stack_transfer_request Transfer request */ |
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/* _ux_host_class_cdc_ecm_endpoints_get Get endpoints of cdc_ecm */ |
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/* _ux_host_class_cdc_ecm_mac_address_get Get MAC address */ |
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/* _ux_host_stack_class_instance_create Create class instance */ |
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/* _ux_host_stack_class_instance_destroy Destroy the class instance */ |
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/* _ux_utility_memory_allocate Allocate memory block */ |
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/* _ux_utility_memory_free Free memory block */ |
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/* _ux_host_semaphore_create Create semaphore */ |
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/* _ux_host_semaphore_delete Delete semaphore */ |
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/* _ux_utility_thread_create Create thread */ |
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/* _ux_utility_thread_delete Delete thread */ |
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/* _ux_utility_thread_resume Resume thread */ |
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/* _ux_network_driver_activate Activate NetX USB interface*/ |
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/* nx_packet_pool_create Create NetX packet pool */ |
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/* nx_packet_pool_delete Delete NetX packet pool */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* _ux_host_class_cdc_ecm_entry Entry of cdc_ecm class */ |
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/* */ |
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/**************************************************************************/ |
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UINT _ux_host_class_cdc_ecm_activate(UX_HOST_CLASS_COMMAND *command) |
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{ |
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UX_INTERFACE *interface_ptr; |
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UX_HOST_CLASS_CDC_ECM *cdc_ecm; |
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UINT status; |
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UX_TRANSFER *transfer_request; |
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ULONG physical_address_msw = 0; |
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ULONG physical_address_lsw = 0; |
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UX_INTERFACE *control_interface; |
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UX_INTERFACE *cur_interface; |
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/* The CDC ECM class is always activated by the interface descriptor and not the |
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device descriptor. */ |
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interface_ptr = (UX_INTERFACE *) command -> ux_host_class_command_container; |
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/* Is this the control interface? */ |
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✓✓ |
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if (interface_ptr -> ux_interface_descriptor.bInterfaceClass == UX_HOST_CLASS_CDC_CONTROL_CLASS) |
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{ |
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/* We ignore the control interface. All activation is performed when |
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we receive the data interface. */ |
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return(UX_SUCCESS); |
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} |
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/* Obtain memory for this class instance. */ |
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cdc_ecm = _ux_utility_memory_allocate(UX_NO_ALIGN, UX_CACHE_SAFE_MEMORY, sizeof(UX_HOST_CLASS_CDC_ECM)); |
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✓✓ |
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if (cdc_ecm == UX_NULL) |
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return(UX_MEMORY_INSUFFICIENT); |
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/* Store the class container into this instance. */ |
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cdc_ecm -> ux_host_class_cdc_ecm_class = command -> ux_host_class_command_class_ptr; |
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/* Store the device container into the cdc_ecm class instance. */ |
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cdc_ecm -> ux_host_class_cdc_ecm_device = interface_ptr -> ux_interface_configuration -> ux_configuration_device; |
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/* Store the interface container into the cdc_acm class instance. */ |
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cdc_ecm -> ux_host_class_cdc_ecm_interface_data = interface_ptr; |
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/* We need to link the data and control interfaces together. In order |
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to do this, we first need to find the control interface. Per the spec, |
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it should be behind this one. */ |
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/* Set the current interface to the second interface. */ |
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cur_interface = interface_ptr -> ux_interface_configuration -> ux_configuration_first_interface; |
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/* Initialize to null. */ |
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control_interface = UX_NULL; |
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/* Loop through all the interfaces until we find the current data interface. */ |
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✓✓ |
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while (cur_interface != interface_ptr) |
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{ |
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/* Is this a control interface? */ |
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✓✓ |
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if (cur_interface -> ux_interface_descriptor.bInterfaceClass == UX_HOST_CLASS_CDC_CONTROL_CLASS) |
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{ |
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/* Is this the right one before current interface? */ |
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✓✗ |
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if (cur_interface -> ux_interface_next_interface == interface_ptr) |
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{ |
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/* Save it. */ |
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control_interface = cur_interface; |
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} |
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} |
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/* Advance current interface. */ |
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cur_interface = cur_interface -> ux_interface_next_interface; |
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} |
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/* Did we not find the control interface? */ |
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✓✓ |
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if (control_interface == UX_NULL) |
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{ |
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/* This in an invalid descriptor. */ |
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/* Error trap. */ |
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_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, UX_DESCRIPTOR_CORRUPTED); |
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/* If trace is enabled, insert this event into the trace buffer. */ |
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UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_DESCRIPTOR_CORRUPTED, 0, 0, 0, UX_TRACE_ERRORS, 0, 0) |
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/* Return error. */ |
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status = UX_DESCRIPTOR_CORRUPTED; |
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} |
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else |
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{ |
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/* We found the control interface. */ |
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status = UX_SUCCESS; |
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} |
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✓✓ |
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if (status == UX_SUCCESS) |
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{ |
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/* Save the control interface. */ |
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cdc_ecm -> ux_host_class_cdc_ecm_interface_control = (UX_INTERFACE *) control_interface; |
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/* Get the cdc_ecm endpoint(s) on the interface. */ |
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status = _ux_host_class_cdc_ecm_endpoints_get(cdc_ecm); |
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} |
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✓✓ |
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if (status == UX_SUCCESS) |
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{ |
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/* Allocate a Thread stack. */ |
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cdc_ecm -> ux_host_class_cdc_ecm_thread_stack = |
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_ux_utility_memory_allocate(UX_NO_ALIGN, UX_REGULAR_MEMORY, UX_THREAD_STACK_SIZE); |
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✓✓ |
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if (cdc_ecm -> ux_host_class_cdc_ecm_thread_stack == UX_NULL) |
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status = UX_MEMORY_INSUFFICIENT; |
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} |
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✓✓ |
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if (status == UX_SUCCESS) |
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{ |
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/* Create the semaphore for aborting bulk in transfers. */ |
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status = _ux_host_semaphore_create(&cdc_ecm -> ux_host_class_cdc_ecm_bulk_in_transfer_waiting_for_check_and_arm_to_finish_semaphore, |
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"host CDC-ECM bulk in wait semaphore", 0); |
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✓✓ |
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if (status == UX_SUCCESS) |
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{ |
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/* Create the semaphore for aborting bulk out transfers. */ |
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status = _ux_host_semaphore_create(&cdc_ecm -> ux_host_class_cdc_ecm_bulk_out_transfer_waiting_for_check_and_arm_to_finish_semaphore, |
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"host CDC-ECM bulk out wait semaphore", 0); |
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✓✓ |
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if (status == UX_SUCCESS) |
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{ |
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/* Create the semaphore to wake up the CDC ECM thread. */ |
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status = _ux_host_semaphore_create(&cdc_ecm -> ux_host_class_cdc_ecm_interrupt_notification_semaphore, "host CDC-ECM interrupt notification semaphore", 0); |
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✓✓ |
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if (status == UX_SUCCESS) |
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{ |
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/* Create the cdc_ecm class thread. We do not start it yet. */ |
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status = _ux_utility_thread_create(&cdc_ecm -> ux_host_class_cdc_ecm_thread, |
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"ux_host_cdc_ecm_thread", _ux_host_class_cdc_ecm_thread, |
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(ULONG) (ALIGN_TYPE) cdc_ecm, |
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cdc_ecm -> ux_host_class_cdc_ecm_thread_stack, |
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UX_THREAD_STACK_SIZE, |
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UX_THREAD_PRIORITY_CLASS, |
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UX_THREAD_PRIORITY_CLASS, |
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UX_NO_TIME_SLICE, UX_DONT_START); |
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✓✓ |
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if (status == UX_SUCCESS) |
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{ |
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UX_THREAD_EXTENSION_PTR_SET(&(cdc_ecm -> ux_host_class_cdc_ecm_thread), cdc_ecm) |
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/* We now need to retrieve the MAC address of the node which is embedded in the ECM descriptor. |
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We will parse the entire configuration descriptor of the device and look for the ECM Ethernet Networking Functional Descriptor. */ |
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status = _ux_host_class_cdc_ecm_mac_address_get(cdc_ecm); |
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✓✓ |
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if (status == UX_SUCCESS) |
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{ |
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/* Setup the physical address of this IP instance. */ |
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physical_address_msw = (ULONG)((cdc_ecm -> ux_host_class_cdc_ecm_node_id[0] << 8) | (cdc_ecm -> ux_host_class_cdc_ecm_node_id[1])); |
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physical_address_lsw = (ULONG)((cdc_ecm -> ux_host_class_cdc_ecm_node_id[2] << 24) | (cdc_ecm -> ux_host_class_cdc_ecm_node_id[3] << 16) | |
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(cdc_ecm -> ux_host_class_cdc_ecm_node_id[4] << 8) | (cdc_ecm -> ux_host_class_cdc_ecm_node_id[5])); |
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/* The ethernet link is down by default. */ |
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cdc_ecm -> ux_host_class_cdc_ecm_link_state = UX_HOST_CLASS_CDC_ECM_LINK_STATE_DOWN; |
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} |
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✓✓ |
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if (status == UX_SUCCESS) |
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{ |
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/* Register this interface to the NetX USB interface broker. */ |
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status = _ux_network_driver_activate((VOID *) cdc_ecm, _ux_host_class_cdc_ecm_write, |
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&cdc_ecm -> ux_host_class_cdc_ecm_network_handle, |
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physical_address_msw, physical_address_lsw); |
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} |
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✓✓ |
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if (status == UX_SUCCESS) |
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{ |
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/* Mark the cdc_ecm data instance as live now. */ |
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cdc_ecm -> ux_host_class_cdc_ecm_state = UX_HOST_CLASS_INSTANCE_LIVE; |
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/* This instance of the device must also be stored in the interface container. */ |
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interface_ptr -> ux_interface_class_instance = (VOID *) cdc_ecm; |
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/* Create this class instance. */ |
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_ux_host_stack_class_instance_create(cdc_ecm -> ux_host_class_cdc_ecm_class, (VOID *) cdc_ecm); |
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/* Start the interrupt pipe now if it exists. */ |
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✓✓ |
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if (cdc_ecm -> ux_host_class_cdc_ecm_interrupt_endpoint != UX_NULL) |
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{ |
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/* Obtain the transfer request from the interrupt endpoint. */ |
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transfer_request = &cdc_ecm -> ux_host_class_cdc_ecm_interrupt_endpoint -> ux_endpoint_transfer_request; |
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status = _ux_host_stack_transfer_request(transfer_request); |
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} |
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✓✓ |
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if (status == UX_SUCCESS) |
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{ |
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/* Activation is complete. */ |
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/* Now we can start the CDC-ECM thread. */ |
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_ux_utility_thread_resume(&cdc_ecm -> ux_host_class_cdc_ecm_thread); |
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/* We need to inform the application if a function has been programmed |
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in the system structure. */ |
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✓✓ |
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if (_ux_system_host -> ux_system_host_change_function != UX_NULL) |
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{ |
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/* Call system change function. Note that the application should |
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wait until the link state is up until using this instance. The |
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link state is changed to up by the CDC-ECM thread, which isn't |
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started until after the data interface has been processed. */ |
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_ux_system_host -> ux_system_host_change_function(UX_DEVICE_INSERTION, cdc_ecm -> ux_host_class_cdc_ecm_class, (VOID *) cdc_ecm); |
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} |
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/* If trace is enabled, insert this event into the trace buffer. */ |
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UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_CDC_ECM_ACTIVATE, cdc_ecm, 0, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) |
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/* If trace is enabled, register this object. */ |
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UX_TRACE_OBJECT_REGISTER(UX_TRACE_HOST_OBJECT_TYPE_INTERFACE, cdc_ecm, 0, 0, 0) |
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/* Activation was successful. */ |
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return(UX_SUCCESS); |
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} |
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/* Error starting interrupt endpoint. */ |
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/* Destroy this class instance. */ |
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_ux_host_stack_class_instance_destroy(cdc_ecm -> ux_host_class_cdc_ecm_class, (VOID *) cdc_ecm); |
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/* Unmount instance. */ |
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interface_ptr -> ux_interface_class_instance = UX_NULL; |
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} |
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/* Delete CDC-ECM thread. */ |
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_ux_utility_thread_delete(&cdc_ecm -> ux_host_class_cdc_ecm_thread); |
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} |
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/* Delete interrupt notification semaphore. */ |
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_ux_host_semaphore_delete(&cdc_ecm -> ux_host_class_cdc_ecm_interrupt_notification_semaphore); |
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} |
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/* Delete class-level bulk out semaphore. */ |
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_ux_host_semaphore_delete(&cdc_ecm -> ux_host_class_cdc_ecm_bulk_out_transfer_waiting_for_check_and_arm_to_finish_semaphore); |
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} |
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/* Delete class-level bulk in semaphore. */ |
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_ux_host_semaphore_delete(&cdc_ecm -> ux_host_class_cdc_ecm_bulk_in_transfer_waiting_for_check_and_arm_to_finish_semaphore); |
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} |
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} |
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/* An error occurred. We must clean up resources. */ |
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330 |
✓✓ |
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if (cdc_ecm -> ux_host_class_cdc_ecm_interrupt_endpoint != UX_NULL && |
331 |
✓✓ |
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cdc_ecm -> ux_host_class_cdc_ecm_interrupt_endpoint -> ux_endpoint_transfer_request.ux_transfer_request_data_pointer != UX_NULL) |
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_ux_utility_memory_free(cdc_ecm -> ux_host_class_cdc_ecm_interrupt_endpoint -> ux_endpoint_transfer_request.ux_transfer_request_data_pointer); |
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334 |
✓✓ |
70 |
if (cdc_ecm -> ux_host_class_cdc_ecm_thread_stack != UX_NULL) |
335 |
|
33 |
_ux_utility_memory_free(cdc_ecm -> ux_host_class_cdc_ecm_thread_stack); |
336 |
|
|
|
337 |
|
70 |
_ux_utility_memory_free(cdc_ecm); |
338 |
|
|
|
339 |
|
|
/* Return completion status. */ |
340 |
|
70 |
return(status); |
341 |
|
|
} |
342 |
|
|
#endif |