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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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/** Device HID Class */ |
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/** */ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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#define UX_SOURCE_CODE |
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/* Include necessary system files. */ |
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#include "ux_api.h" |
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#include "ux_device_class_hid.h" |
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#include "ux_device_stack.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _ux_device_class_hid_initialize PORTABLE C */ |
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/* 6.3.0 */ |
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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 initializes the USB HID device. */ |
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/* This function is called by the class register function. It is only */ |
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/* done once. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* command Pointer to hid command */ |
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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_utility_memory_allocate Allocate memory */ |
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/* _ux_utility_memory_free Free memory */ |
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/* _ux_device_thread_create Create thread */ |
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/* _ux_device_thread_delete Delete thread */ |
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/* _ux_utility_event_flags_create Create event flags group */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* USBX Source Code */ |
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/* */ |
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/**************************************************************************/ |
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UINT _ux_device_class_hid_initialize(UX_SLAVE_CLASS_COMMAND *command) |
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{ |
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UX_SLAVE_CLASS_HID *hid; |
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UX_SLAVE_CLASS_HID_PARAMETER *hid_parameter; |
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UX_SLAVE_CLASS *class_ptr; |
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UINT status = UX_SUCCESS; |
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ULONG array_memory_size; |
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#if (UX_DEVICE_ENDPOINT_BUFFER_OWNER == 1) && defined(UX_DEVICE_CLASS_HID_ZERO_COPY) |
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UINT i; |
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UCHAR *buffer; |
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#endif |
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/* Compile option checks. */ |
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UX_ASSERT(UX_DEVICE_CLASS_HID_EVENT_BUFFER_LENGTH <= UX_SLAVE_REQUEST_CONTROL_MAX_LENGTH); |
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#if UX_DEVICE_ENDPOINT_BUFFER_OWNER == 0 |
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UX_ASSERT(UX_DEVICE_CLASS_HID_EVENT_BUFFER_LENGTH <= UX_SLAVE_REQUEST_DATA_MAX_LENGTH); |
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#endif |
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/* Get the pointer to the application parameters for the hid class. */ |
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hid_parameter = command -> ux_slave_class_command_parameter; |
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/* Get the class container. */ |
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class_ptr = command -> ux_slave_class_command_class_ptr; |
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/* Create an instance of the device hid class. */ |
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hid = _ux_utility_memory_allocate(UX_NO_ALIGN, UX_REGULAR_MEMORY, sizeof(UX_SLAVE_CLASS_HID)); |
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/* Check for successful allocation. */ |
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✓✓ |
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if (hid == UX_NULL) |
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return(UX_MEMORY_INSUFFICIENT); |
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/* Save the address of the HID instance inside the HID container. */ |
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class_ptr -> ux_slave_class_instance = (VOID *) hid; |
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#if defined(UX_DEVICE_CLASS_HID_OWN_ENDPOINT_BUFFER) |
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/* Allocate buffer(s) for endpoint(s). */ |
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UX_ASSERT(!UX_DEVICE_CLASS_HID_ENDPOINT_BUFFER_SIZE_CALC_OVERFLOW); |
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hid -> ux_device_class_hid_endpoint_buffer = _ux_utility_memory_allocate( |
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UX_NO_ALIGN, UX_CACHE_SAFE_MEMORY, |
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UX_DEVICE_CLASS_HID_ENDPOINT_BUFFER_SIZE); |
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if (hid -> ux_device_class_hid_endpoint_buffer == UX_NULL) |
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{ |
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_ux_utility_memory_free(hid); |
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return(UX_MEMORY_INSUFFICIENT); |
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} |
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#endif |
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#if !defined(UX_DEVICE_STANDALONE) |
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/* Allocate some memory for the thread stack. */ |
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class_ptr -> ux_slave_class_thread_stack = |
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_ux_utility_memory_allocate(UX_NO_ALIGN, UX_REGULAR_MEMORY, UX_DEVICE_CLASS_HID_THREAD_STACK_SIZE); |
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/* Check for successful allocation. */ |
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✓✓ |
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if (class_ptr -> ux_slave_class_thread_stack == UX_NULL) |
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status = UX_MEMORY_INSUFFICIENT; |
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/* This instance needs to be running in a different thread. So start |
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a new thread. We pass a pointer to the class to the new thread. This thread |
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does not start until we have a instance of the class. */ |
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✓✓ |
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if (status == UX_SUCCESS) |
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status = _ux_device_thread_create(&class_ptr -> ux_slave_class_thread, "ux_slave_hid_thread", |
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_ux_device_class_hid_interrupt_thread, |
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(ULONG) (ALIGN_TYPE) class_ptr, (VOID *) class_ptr -> ux_slave_class_thread_stack, |
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UX_DEVICE_CLASS_HID_THREAD_STACK_SIZE, UX_THREAD_PRIORITY_CLASS, |
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UX_THREAD_PRIORITY_CLASS, UX_NO_TIME_SLICE, UX_DONT_START); |
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#else |
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#if defined(UX_DEVICE_CLASS_HID_FLEXIBLE_EVENTS_QUEUE) |
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/* Set event buffer. */ |
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hid -> ux_device_class_hid_event.ux_device_class_hid_event_buffer = |
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UX_DEVICE_CLASS_HID_INTERRUPTIN_BUFFER(hid); |
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#endif |
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/* Set task function. */ |
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class_ptr -> ux_slave_class_task_function = _ux_device_class_hid_tasks_run; |
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#endif |
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/* Check the creation of this thread. */ |
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✓✓ |
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if (status == UX_SUCCESS) |
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{ |
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#if !defined(UX_DEVICE_STANDALONE) |
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UX_THREAD_EXTENSION_PTR_SET(&(class_ptr -> ux_slave_class_thread), class_ptr) |
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#endif |
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/* Store all the application parameter information about the report. */ |
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hid -> ux_device_class_hid_report_address = hid_parameter -> ux_device_class_hid_parameter_report_address; |
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hid -> ux_device_class_hid_report_length = hid_parameter -> ux_device_class_hid_parameter_report_length; |
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hid -> ux_device_class_hid_report_id = hid_parameter -> ux_device_class_hid_parameter_report_id; |
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/* Store the callback function. */ |
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hid -> ux_device_class_hid_callback = hid_parameter -> ux_device_class_hid_parameter_callback; |
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hid -> ux_device_class_hid_get_callback = hid_parameter -> ux_device_class_hid_parameter_get_callback; |
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#if defined(UX_DEVICE_CLASS_HID_FLEXIBLE_EVENTS_QUEUE) |
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/* If event length is invalid, UX_DEVICE_CLASS_HID_EVENT_BUFFER_LENGTH is used. */ |
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if (UX_DEVICE_CLASS_HID_PARAM_EVENT_MAX_LENGTH(hid_parameter) == 0 || |
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UX_DEVICE_CLASS_HID_PARAM_EVENT_MAX_LENGTH(hid_parameter) > UX_DEVICE_CLASS_HID_EVENT_BUFFER_LENGTH) |
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UX_DEVICE_CLASS_HID_PARAM_EVENT_MAX_LENGTH(hid_parameter) = UX_DEVICE_CLASS_HID_EVENT_BUFFER_LENGTH; |
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/* If event queue size is invalid, UX_DEVICE_CLASS_HID_MAX_EVENTS_QUEUE is used. */ |
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if (UX_DEVICE_CLASS_HID_PARAM_EVENT_QUEUE_SIZE(hid_parameter) < 2 || |
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UX_DEVICE_CLASS_HID_PARAM_EVENT_QUEUE_SIZE(hid_parameter) > UX_DEVICE_CLASS_HID_MAX_EVENTS_QUEUE) |
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UX_DEVICE_CLASS_HID_PARAM_EVENT_QUEUE_SIZE(hid_parameter) = UX_DEVICE_CLASS_HID_MAX_EVENTS_QUEUE; |
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/* Save event size. */ |
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UX_DEVICE_CLASS_HID_EVENT_MAX_LENGTH(hid) = UX_DEVICE_CLASS_HID_PARAM_EVENT_MAX_LENGTH(hid_parameter); |
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#endif |
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/* Create the event array. */ |
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UX_ASSERT(!UX_OVERFLOW_CHECK_MULC_ULONG( |
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UX_DEVICE_CLASS_HID_EVENT_QUEUE_ITEM_SIZE(hid), |
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UX_DEVICE_CLASS_HID_PARAM_EVENT_QUEUE_SIZE(hid_parameter))); |
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array_memory_size = UX_DEVICE_CLASS_HID_EVENT_QUEUE_ITEM_SIZE(hid) * UX_DEVICE_CLASS_HID_PARAM_EVENT_QUEUE_SIZE(hid_parameter); |
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hid -> ux_device_class_hid_event_array = _ux_utility_memory_allocate(UX_NO_ALIGN, |
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UX_REGULAR_MEMORY, array_memory_size); |
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/* Do we need event buffer? |
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* 1. Even zero copy, report copy is kept to avoid keep buffers in application. |
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* 2. Other cases, buffer must be allocated. |
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*/ |
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/* Allocate buffer if needed. */ |
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{ |
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#if (UX_DEVICE_ENDPOINT_BUFFER_OWNER == 1) && defined(UX_DEVICE_CLASS_HID_ZERO_COPY) |
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/* Allocate cache safe event buffers. */ |
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buffer = _ux_utility_memory_allocate_mulv_safe(UX_NO_ALIGN, UX_CACHE_SAFE_MEMORY, |
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UX_DEVICE_CLASS_HID_PARAM_EVENT_MAX_LENGTH(hid_parameter), |
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UX_DEVICE_CLASS_HID_PARAM_EVENT_QUEUE_SIZE(hid_parameter)); |
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/* Allocation error check. */ |
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if (buffer == UX_NULL) |
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{ |
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if (hid -> ux_device_class_hid_event_array != UX_NULL) |
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{ |
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_ux_utility_memory_free(hid -> ux_device_class_hid_event_array); |
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hid -> ux_device_class_hid_event_array = UX_NULL; |
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} |
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} |
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else |
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{ |
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/* Assign event buffers. */ |
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for (i = 0; i < UX_DEVICE_CLASS_HID_PARAM_EVENT_QUEUE_SIZE(hid_parameter); i ++) |
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{ |
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hid -> ux_device_class_hid_event_array[i].ux_device_class_hid_event_buffer = buffer; |
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buffer += UX_DEVICE_CLASS_HID_PARAM_EVENT_MAX_LENGTH(hid_parameter); |
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} |
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} |
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#else |
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/* Regular event place data following id,type and length. */ |
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#endif |
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} |
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/* Check for successful allocation. */ |
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✓✓ |
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if (hid -> ux_device_class_hid_event_array != UX_NULL) |
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{ |
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/* Initialize the head and tail of the notification round robin buffers. |
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At first, the head and tail are pointing to the beginning of the array. */ |
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hid -> ux_device_class_hid_event_array_head = hid -> ux_device_class_hid_event_array; |
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hid -> ux_device_class_hid_event_array_tail = hid -> ux_device_class_hid_event_array; |
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hid -> ux_device_class_hid_event_array_end = (UX_DEVICE_CLASS_HID_EVENT*)((UCHAR*)hid -> ux_device_class_hid_event_array + array_memory_size); |
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/* Store the start and stop signals if needed by the application. */ |
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hid -> ux_slave_class_hid_instance_activate = hid_parameter -> ux_slave_class_hid_instance_activate; |
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hid -> ux_slave_class_hid_instance_deactivate = hid_parameter -> ux_slave_class_hid_instance_deactivate; |
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/* By default no event wait timeout. */ |
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hid -> ux_device_class_hid_event_wait_timeout = UX_WAIT_FOREVER; |
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#if !defined(UX_DEVICE_STANDALONE) |
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/* Create a event flag group for the hid class to synchronize with the event interrupt thread. */ |
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status = _ux_utility_event_flags_create(&hid -> ux_device_class_hid_event_flags_group, "ux_device_class_hid_event_flag"); |
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/* Check status. */ |
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✓✓ |
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if (status != UX_SUCCESS) |
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status = UX_EVENT_ERROR; |
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else |
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#endif |
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{ |
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#if defined(UX_DEVICE_CLASS_HID_INTERRUPT_OUT_SUPPORT) |
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#if !defined(UX_DEVICE_STANDALONE) |
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/* Create a mutex for reading reentry check. */ |
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status = _ux_utility_mutex_create(&hid -> ux_device_class_hid_read_mutex, |
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"ux_device_class_hid_read_mutex"); |
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if (status == UX_SUCCESS) |
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{ |
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#endif |
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/* If receiver is enabled by parameter, initialize it. */ |
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if (hid_parameter -> ux_device_class_hid_parameter_receiver_initialize) |
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{ |
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/* Allocate buffer for receiver and receiver events. */ |
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status = hid_parameter -> |
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ux_device_class_hid_parameter_receiver_initialize(hid, |
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hid_parameter, |
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&hid -> ux_device_class_hid_receiver); |
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} |
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/* Done success, return. */ |
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if (status == UX_SUCCESS) |
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return(status); |
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#if !defined(UX_DEVICE_STANDALONE) |
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/* There is error, delete mutex. */ |
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_ux_device_mutex_delete(&hid -> ux_device_class_hid_read_mutex); |
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} |
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else |
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status = UX_MUTEX_ERROR; |
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/* There is error, delete event flags. */ |
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_ux_utility_event_flags_delete(&hid -> ux_device_class_hid_event_flags_group); |
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#endif |
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#else |
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return(status); |
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#endif |
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} |
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#if !defined(UX_DEVICE_STANDALONE) || defined(UX_DEVICE_CLASS_HID_INTERRUPT_OUT_SUPPORT) |
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/* There is still initialization activities after array creation, |
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* and some error occurs in this stage. */ |
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/* Free allocated event array memory. */ |
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#if (UX_DEVICE_ENDPOINT_BUFFER_OWNER == 1) && defined(UX_DEVICE_CLASS_HID_ZERO_COPY) |
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_ux_utility_memory_free(hid -> ux_device_class_hid_event_array -> ux_device_class_hid_event_buffer); |
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#endif |
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_ux_utility_memory_free(hid -> ux_device_class_hid_event_array); |
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#endif |
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} |
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else |
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status = UX_MEMORY_INSUFFICIENT; |
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#if !defined(UX_DEVICE_STANDALONE) |
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/* Delete thread. */ |
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_ux_device_thread_delete(&class_ptr -> ux_slave_class_thread); |
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#endif |
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} |
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else |
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status = (UX_THREAD_ERROR); |
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#if !defined(UX_DEVICE_STANDALONE) |
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/* Free stack. */ |
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✓✓ |
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if (class_ptr -> ux_slave_class_thread_stack) |
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_ux_utility_memory_free(class_ptr -> ux_slave_class_thread_stack); |
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#endif |
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#if defined(UX_DEVICE_CLASS_HID_OWN_ENDPOINT_BUFFER) |
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_ux_utility_memory_free(hid -> ux_device_class_hid_endpoint_buffer); |
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#endif |
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/* Unmount instance. */ |
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class_ptr -> ux_slave_class_instance = UX_NULL; |
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/* Free HID instance. */ |
343 |
|
14 |
_ux_utility_memory_free(hid); |
344 |
|
|
|
345 |
|
|
/* Return completion status. */ |
346 |
|
14 |
return(status); |
347 |
|
|
} |
348 |
|
|
|
349 |
|
|
|
350 |
|
|
/**************************************************************************/ |
351 |
|
|
/* */ |
352 |
|
|
/* FUNCTION RELEASE */ |
353 |
|
|
/* */ |
354 |
|
|
/* _uxe_device_class_hid_initialize PORTABLE C */ |
355 |
|
|
/* 6.3.0 */ |
356 |
|
|
/* AUTHOR */ |
357 |
|
|
/* */ |
358 |
|
|
/* Chaoqiong Xiao, Microsoft Corporation */ |
359 |
|
|
/* */ |
360 |
|
|
/* DESCRIPTION */ |
361 |
|
|
/* */ |
362 |
|
|
/* This function checks errors in HID initialize function call. */ |
363 |
|
|
/* */ |
364 |
|
|
/* INPUT */ |
365 |
|
|
/* */ |
366 |
|
|
/* command Pointer to hid command */ |
367 |
|
|
/* */ |
368 |
|
|
/* OUTPUT */ |
369 |
|
|
/* */ |
370 |
|
|
/* None */ |
371 |
|
|
/* */ |
372 |
|
|
/* CALLS */ |
373 |
|
|
/* */ |
374 |
|
|
/* _ux_device_class_hid_initialize Initialize HID instance */ |
375 |
|
|
/* */ |
376 |
|
|
/* CALLED BY */ |
377 |
|
|
/* */ |
378 |
|
|
/* Device Stack */ |
379 |
|
|
/* */ |
380 |
|
|
/**************************************************************************/ |
381 |
|
|
UINT _uxe_device_class_hid_initialize(UX_SLAVE_CLASS_COMMAND *command) |
382 |
|
|
{ |
383 |
|
|
|
384 |
|
|
UX_SLAVE_CLASS_HID_PARAMETER *hid_parameter; |
385 |
|
|
|
386 |
|
|
/* Get the pointer to the application parameters for the hid class. */ |
387 |
|
|
hid_parameter = command -> ux_slave_class_command_parameter; |
388 |
|
|
|
389 |
|
|
/* Check input parameters. */ |
390 |
|
|
if ((hid_parameter -> ux_device_class_hid_parameter_report_address == UX_NULL) || |
391 |
|
|
(hid_parameter -> ux_device_class_hid_parameter_report_length == 0) || |
392 |
|
|
(hid_parameter -> ux_device_class_hid_parameter_report_length > UX_SLAVE_REQUEST_CONTROL_MAX_LENGTH)) |
393 |
|
|
{ |
394 |
|
|
return(UX_INVALID_PARAMETER); |
395 |
|
|
} |
396 |
|
|
|
397 |
|
|
/* Invoke initialize function. */ |
398 |
|
|
return(_ux_device_class_hid_initialize(command)); |
399 |
|
|
} |