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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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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 CDC 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_cdc_acm.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_cdc_acm_ioctl 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 performs certain functions on the cdc acm instance */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* cdc_acm Address of cdc_acm class */ |
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/* instance */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* Status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _ux_device_stack_transfer_abort Abort transfer */ |
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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_utility_event_flags_create Create event flags */ |
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/* _ux_utility_event_flags_delete Delete event flags */ |
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/* _ux_device_thread_create Create thread */ |
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/* _ux_device_thread_delete Delete thread */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application */ |
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/* */ |
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/* RELEASE HISTORY */ |
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/* */ |
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/* DATE NAME DESCRIPTION */ |
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/* */ |
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/* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */ |
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/* 09-30-2020 Chaoqiong Xiao Modified comment(s), */ |
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/* used UX prefix to refer to */ |
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/* TX symbols instead of using */ |
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/* them directly, */ |
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/* resulting in version 6.1 */ |
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/* 03-02-2021 Xiuwen Cai Modified comment(s), removed */ |
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/* unreachable statement, */ |
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/* resulting in version 6.1.5 */ |
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/* 04-02-2021 Chaoqiong Xiao Modified comment(s), */ |
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/* added macro to disable */ |
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/* transmission support, */ |
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/* moved transmission resource */ |
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/* management to init/uninit, */ |
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/* resulting in version 6.1.6 */ |
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/* 10-15-2021 Chaoqiong Xiao Modified comment(s), */ |
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/* fixed compile issue, */ |
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/* resulting in version 6.1.9 */ |
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/* 01-31-2022 Chaoqiong Xiao Modified comment(s), */ |
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/* added standalone support, */ |
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/* fixed aborting return code, */ |
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/* resulting in version 6.1.10 */ |
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/* 07-29-2022 Chaoqiong Xiao Modified comment(s), */ |
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/* fixed parameter/variable */ |
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/* names conflict C++ keyword, */ |
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/* resulting in version 6.1.12 */ |
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/* 10-31-2023 Yajun Xia Modified comment(s), */ |
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/* resulting in version 6.3.0 */ |
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/* */ |
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/**************************************************************************/ |
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UINT _ux_device_class_cdc_acm_ioctl(UX_SLAVE_CLASS_CDC_ACM *cdc_acm, ULONG ioctl_function, |
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VOID *parameter) |
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{ |
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UINT status; |
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UX_SLAVE_CLASS_CDC_ACM_LINE_CODING_PARAMETER *line_coding; |
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UX_SLAVE_CLASS_CDC_ACM_LINE_STATE_PARAMETER *line_state; |
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#ifndef UX_DEVICE_CLASS_CDC_ACM_TRANSMISSION_DISABLE |
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UX_SLAVE_CLASS_CDC_ACM_CALLBACK_PARAMETER *callback; |
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#endif |
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UX_SLAVE_ENDPOINT *endpoint; |
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UX_SLAVE_INTERFACE *interface_ptr; |
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UX_SLAVE_TRANSFER *transfer_request; |
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/* Let's be optimist ! */ |
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status = UX_SUCCESS; |
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/* The command request will tell us what we need to do here. */ |
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✓✓✓✓
✓✓✓✓
✓ |
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switch (ioctl_function) |
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{ |
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case UX_SLAVE_CLASS_CDC_ACM_IOCTL_SET_LINE_CODING: |
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/* Properly cast the parameter pointer. */ |
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line_coding = (UX_SLAVE_CLASS_CDC_ACM_LINE_CODING_PARAMETER *) parameter; |
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/* Save the parameters in the cdc_acm function. */ |
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cdc_acm -> ux_slave_class_cdc_acm_baudrate = line_coding -> ux_slave_class_cdc_acm_parameter_baudrate; |
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cdc_acm -> ux_slave_class_cdc_acm_stop_bit = line_coding -> ux_slave_class_cdc_acm_parameter_stop_bit; |
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cdc_acm -> ux_slave_class_cdc_acm_parity = line_coding -> ux_slave_class_cdc_acm_parameter_parity; |
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cdc_acm -> ux_slave_class_cdc_acm_data_bit = line_coding -> ux_slave_class_cdc_acm_parameter_data_bit; |
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break; |
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case UX_SLAVE_CLASS_CDC_ACM_IOCTL_GET_LINE_CODING: |
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/* Properly cast the parameter pointer. */ |
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line_coding = (UX_SLAVE_CLASS_CDC_ACM_LINE_CODING_PARAMETER *) parameter; |
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/* Save the parameters in the cdc_acm function. */ |
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line_coding -> ux_slave_class_cdc_acm_parameter_baudrate = cdc_acm -> ux_slave_class_cdc_acm_baudrate; |
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line_coding -> ux_slave_class_cdc_acm_parameter_stop_bit = cdc_acm -> ux_slave_class_cdc_acm_stop_bit; |
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line_coding -> ux_slave_class_cdc_acm_parameter_parity = cdc_acm -> ux_slave_class_cdc_acm_parity; |
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line_coding -> ux_slave_class_cdc_acm_parameter_data_bit = cdc_acm -> ux_slave_class_cdc_acm_data_bit; |
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break; |
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case UX_SLAVE_CLASS_CDC_ACM_IOCTL_GET_LINE_STATE: |
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/* Properly cast the parameter pointer. */ |
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line_state = (UX_SLAVE_CLASS_CDC_ACM_LINE_STATE_PARAMETER *) parameter; |
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/* Return the DTR/RTS signals. */ |
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line_state -> ux_slave_class_cdc_acm_parameter_rts = cdc_acm -> ux_slave_class_cdc_acm_data_rts_state; |
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line_state -> ux_slave_class_cdc_acm_parameter_dtr = cdc_acm -> ux_slave_class_cdc_acm_data_dtr_state; |
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break; |
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case UX_SLAVE_CLASS_CDC_ACM_IOCTL_SET_LINE_STATE: |
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/* Properly cast the parameter pointer. */ |
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line_state = (UX_SLAVE_CLASS_CDC_ACM_LINE_STATE_PARAMETER *) parameter; |
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/* Set the DTR/RTS signals. */ |
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cdc_acm -> ux_slave_class_cdc_acm_data_rts_state = line_state -> ux_slave_class_cdc_acm_parameter_rts; |
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cdc_acm -> ux_slave_class_cdc_acm_data_dtr_state = line_state -> ux_slave_class_cdc_acm_parameter_dtr; |
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break; |
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case UX_SLAVE_CLASS_CDC_ACM_IOCTL_ABORT_PIPE: |
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/* Get the interface from the instance. */ |
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interface_ptr = cdc_acm -> ux_slave_class_cdc_acm_interface; |
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/* Locate the endpoints. */ |
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endpoint = interface_ptr -> ux_slave_interface_first_endpoint; |
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/* What direction ? */ |
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✓✓✓ |
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switch( (ULONG) (ALIGN_TYPE) parameter) |
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{ |
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case UX_SLAVE_CLASS_CDC_ACM_ENDPOINT_XMIT : |
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/* Check the endpoint direction, if IN we have the correct endpoint. */ |
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✓✓ |
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if ((endpoint -> ux_slave_endpoint_descriptor.bEndpointAddress & UX_ENDPOINT_DIRECTION) != UX_ENDPOINT_IN) |
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{ |
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/* So the next endpoint has to be the XMIT endpoint. */ |
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endpoint = endpoint -> ux_slave_endpoint_next_endpoint; |
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} |
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break; |
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case UX_SLAVE_CLASS_CDC_ACM_ENDPOINT_RCV : |
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/* Check the endpoint direction, if OUT we have the correct endpoint. */ |
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✓✓ |
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if ((endpoint -> ux_slave_endpoint_descriptor.bEndpointAddress & UX_ENDPOINT_DIRECTION) != UX_ENDPOINT_OUT) |
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{ |
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/* So the next endpoint has to be the RCV endpoint. */ |
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endpoint = endpoint -> ux_slave_endpoint_next_endpoint; |
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} |
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break; |
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default : |
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/* Parameter not supported. Return an error. */ |
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status = UX_ENDPOINT_HANDLE_UNKNOWN; |
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} |
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/* Get the transfer request associated with the endpoint. */ |
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transfer_request = &endpoint -> ux_slave_endpoint_transfer_request; |
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#if defined(UX_DEVICE_STANDALONE) |
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/* Abort the transfer. */ |
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_ux_device_stack_transfer_abort(transfer_request, UX_TRANSFER_STATUS_ABORT); |
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if ((ULONG) (ALIGN_TYPE) parameter == UX_SLAVE_CLASS_CDC_ACM_ENDPOINT_XMIT) |
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cdc_acm -> ux_device_class_cdc_acm_write_state = UX_STATE_RESET; |
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else |
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cdc_acm -> ux_device_class_cdc_acm_read_state = UX_STATE_RESET; |
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#else |
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/* Check the status of the transfer. */ |
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✓✓ |
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if (transfer_request -> ux_slave_transfer_request_status == UX_TRANSFER_STATUS_PENDING) |
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{ |
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/* Abort the transfer. */ |
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_ux_device_stack_transfer_abort(transfer_request, UX_ABORTED); |
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} |
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#endif |
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break; |
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case UX_SLAVE_CLASS_CDC_ACM_IOCTL_SET_READ_TIMEOUT: |
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case UX_SLAVE_CLASS_CDC_ACM_IOCTL_SET_WRITE_TIMEOUT: |
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/* Get the interface from the instance. */ |
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interface_ptr = cdc_acm -> ux_slave_class_cdc_acm_interface; |
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/* Locate the endpoints. */ |
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endpoint = interface_ptr -> ux_slave_interface_first_endpoint; |
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/* If it's reading timeout but endpoint is OUT, it should be the next one. */ |
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✓✓ |
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if ((endpoint -> ux_slave_endpoint_descriptor.bEndpointAddress & UX_ENDPOINT_DIRECTION) != |
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✓✓ |
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(ULONG)((ioctl_function == UX_SLAVE_CLASS_CDC_ACM_IOCTL_SET_READ_TIMEOUT) ? UX_ENDPOINT_OUT : UX_ENDPOINT_IN)) |
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endpoint = endpoint -> ux_slave_endpoint_next_endpoint; |
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/* Get the transfer request associated with the endpoint. */ |
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transfer_request = &endpoint -> ux_slave_endpoint_transfer_request; |
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/* Check the status of the transfer. */ |
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✓✓ |
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if (transfer_request -> ux_slave_transfer_request_status == UX_TRANSFER_STATUS_PENDING) |
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status = UX_ERROR; |
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else |
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transfer_request -> ux_slave_transfer_request_timeout = (ULONG) (ALIGN_TYPE) parameter; |
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break; |
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#ifndef UX_DEVICE_CLASS_CDC_ACM_TRANSMISSION_DISABLE |
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case UX_SLAVE_CLASS_CDC_ACM_IOCTL_TRANSMISSION_START: |
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/* Check if we are in callback transmission already. */ |
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✓✓ |
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if (cdc_acm -> ux_slave_class_cdc_acm_transmission_status == UX_TRUE) |
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{ |
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/* We should not to that ! */ |
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return(UX_ERROR); |
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} |
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/* Properly cast the parameter pointer. */ |
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callback = (UX_SLAVE_CLASS_CDC_ACM_CALLBACK_PARAMETER *) parameter; |
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/* Save the callback function for write. */ |
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cdc_acm -> ux_device_class_cdc_acm_write_callback = callback -> ux_device_class_cdc_acm_parameter_write_callback; |
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/* Save the callback function for read. */ |
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cdc_acm -> ux_device_class_cdc_acm_read_callback = callback -> ux_device_class_cdc_acm_parameter_read_callback; |
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#if !defined(UX_DEVICE_STANDALONE) |
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/* Start transmission threads. */ |
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_ux_utility_thread_resume(&cdc_acm -> ux_slave_class_cdc_acm_bulkin_thread); |
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_ux_utility_thread_resume(&cdc_acm -> ux_slave_class_cdc_acm_bulkout_thread); |
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#endif |
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/* Declare the transmission with callback on. */ |
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cdc_acm -> ux_slave_class_cdc_acm_transmission_status = UX_TRUE; |
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/* We are done here. */ |
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return(UX_SUCCESS); |
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case UX_SLAVE_CLASS_CDC_ACM_IOCTL_TRANSMISSION_STOP: |
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/* Check if we are in callback transmission already. */ |
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✓✓ |
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if (cdc_acm -> ux_slave_class_cdc_acm_transmission_status == UX_TRUE) |
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{ |
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/* Get the interface from the instance. */ |
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interface_ptr = cdc_acm -> ux_slave_class_cdc_acm_interface; |
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/* Locate the endpoints. */ |
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endpoint = interface_ptr -> ux_slave_interface_first_endpoint; |
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/* Get the transfer request associated with the endpoint. */ |
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transfer_request = &endpoint -> ux_slave_endpoint_transfer_request; |
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/* Abort the transfer. */ |
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_ux_device_stack_transfer_abort(transfer_request, UX_ABORTED); |
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/* Next endpoint. */ |
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endpoint = endpoint -> ux_slave_endpoint_next_endpoint; |
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/* Get the transfer request associated with the endpoint. */ |
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transfer_request = &endpoint -> ux_slave_endpoint_transfer_request; |
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/* Abort the transfer. */ |
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_ux_device_stack_transfer_abort(transfer_request, UX_ABORTED); |
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#if !defined(UX_DEVICE_STANDALONE) |
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/* Suspend threads. */ |
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_ux_device_thread_suspend(&cdc_acm -> ux_slave_class_cdc_acm_bulkin_thread); |
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_ux_device_thread_suspend(&cdc_acm -> ux_slave_class_cdc_acm_bulkout_thread); |
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#endif |
330 |
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/* Clear scheduled write flag. */ |
332 |
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cdc_acm -> ux_slave_class_cdc_acm_scheduled_write = UX_FALSE; |
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334 |
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/* Declare the transmission with callback off. */ |
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cdc_acm -> ux_slave_class_cdc_acm_transmission_status = UX_FALSE; |
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} |
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else |
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339 |
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/* We should not try to stop an non existing transmission. */ |
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return(UX_ERROR); |
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break; |
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#endif |
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1 |
default: |
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/* Error trap. */ |
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|
1 |
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, UX_FUNCTION_NOT_SUPPORTED); |
349 |
|
|
|
350 |
|
|
/* If trace is enabled, insert this event into the trace buffer. */ |
351 |
|
|
UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_FUNCTION_NOT_SUPPORTED, 0, 0, 0, UX_TRACE_ERRORS, 0, 0) |
352 |
|
|
|
353 |
|
|
/* Function not supported. Return an error. */ |
354 |
|
1 |
status = UX_FUNCTION_NOT_SUPPORTED; |
355 |
|
|
} |
356 |
|
|
|
357 |
|
|
/* Return status to caller. */ |
358 |
|
45 |
return(status); |
359 |
|
|
|
360 |
|
|
} |
361 |
|
|
|
362 |
|
|
/**************************************************************************/ |
363 |
|
|
/* */ |
364 |
|
|
/* FUNCTION RELEASE */ |
365 |
|
|
/* */ |
366 |
|
|
/* _uxe_device_class_cdc_acm_ioctl PORTABLE C */ |
367 |
|
|
/* 6.3.0 */ |
368 |
|
|
/* AUTHOR */ |
369 |
|
|
/* */ |
370 |
|
|
/* Yajun Xia, Microsoft Corporation */ |
371 |
|
|
/* */ |
372 |
|
|
/* DESCRIPTION */ |
373 |
|
|
/* */ |
374 |
|
|
/* This function checks errors in CDC ACM class ioctl function. */ |
375 |
|
|
/* */ |
376 |
|
|
/* INPUT */ |
377 |
|
|
/* */ |
378 |
|
|
/* cdc_acm Address of cdc_acm class */ |
379 |
|
|
/* instance */ |
380 |
|
|
/* ioctl_function Ioctl function */ |
381 |
|
|
/* Parameter Parameter of ioctl function */ |
382 |
|
|
/* */ |
383 |
|
|
/* OUTPUT */ |
384 |
|
|
/* */ |
385 |
|
|
/* Status */ |
386 |
|
|
/* */ |
387 |
|
|
/* CALLS */ |
388 |
|
|
/* */ |
389 |
|
|
/* _ux_device_class_cdc_acm_ioctl CDC ACM class ioctl function */ |
390 |
|
|
/* */ |
391 |
|
|
/* CALLED BY */ |
392 |
|
|
/* */ |
393 |
|
|
/* Application */ |
394 |
|
|
/* */ |
395 |
|
|
/* RELEASE HISTORY */ |
396 |
|
|
/* */ |
397 |
|
|
/* DATE NAME DESCRIPTION */ |
398 |
|
|
/* */ |
399 |
|
|
/* 10-31-2023 Yajun Xia Initial Version 6.3.0 */ |
400 |
|
|
/* */ |
401 |
|
|
/**************************************************************************/ |
402 |
|
|
UINT _uxe_device_class_cdc_acm_ioctl(UX_SLAVE_CLASS_CDC_ACM *cdc_acm, ULONG ioctl_function, |
403 |
|
|
VOID *parameter) |
404 |
|
|
{ |
405 |
|
|
|
406 |
|
|
/* Sanity checks. */ |
407 |
|
|
if (cdc_acm == UX_NULL) |
408 |
|
|
{ |
409 |
|
|
return (UX_INVALID_PARAMETER); |
410 |
|
|
} |
411 |
|
|
|
412 |
|
|
return (_ux_device_class_cdc_acm_ioctl(cdc_acm, ioctl_function, parameter)); |
413 |
|
|
} |