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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 ACM 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_acm.h" |
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#include "ux_host_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_host_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 is the ioctl entry point for the application to */ |
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/* configure the ACM device. */ |
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/* */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* cdc_acm Pointer to CDC ACM class */ |
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/* ioctl_function ioctl function */ |
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/* parameter pointer to structure */ |
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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_endpoint_transfer_abort */ |
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/* Abort transfer */ |
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/* _ux_host_class_cdc_acm_command Send command to acm device */ |
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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_long_put Put 32-bit value */ |
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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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/**************************************************************************/ |
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UINT _ux_host_class_cdc_acm_ioctl(UX_HOST_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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UCHAR *data_buffer; |
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UX_HOST_CLASS_CDC_ACM_LINE_CODING *line_coding; |
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UX_HOST_CLASS_CDC_ACM_LINE_STATE *line_state; |
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VOID (*callback_function) (struct UX_HOST_CLASS_CDC_ACM_STRUCT *, ULONG, ULONG ); |
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ULONG value; |
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#if defined(UX_HOST_STANDALONE) |
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VOID (*write_callback_function) (struct UX_HOST_CLASS_CDC_ACM_STRUCT *, UINT, ULONG ); |
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UX_TRANSFER *transfer; |
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#endif |
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/* Ensure the instance is valid. */ |
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✓✓ |
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if ((cdc_acm -> ux_host_class_cdc_acm_state != UX_HOST_CLASS_INSTANCE_LIVE) && |
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✓✓ |
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(cdc_acm -> ux_host_class_cdc_acm_state != UX_HOST_CLASS_INSTANCE_MOUNTING)) |
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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_ERROR, UX_HOST_CLASS_INSTANCE_UNKNOWN, cdc_acm, 0, 0, UX_TRACE_ERRORS, 0, 0) |
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return(UX_HOST_CLASS_INSTANCE_UNKNOWN); |
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} |
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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_HOST_CLASS_CDC_ACM_IOCTL_SET_LINE_CODING: |
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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_ACM_IOCTL_SET_LINE_CODING, cdc_acm, parameter, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) |
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/* Allocate some cache safe memory for the control command. */ |
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data_buffer = _ux_utility_memory_allocate(UX_SAFE_ALIGN, UX_CACHE_SAFE_MEMORY, UX_HOST_CLASS_CDC_ACM_LINE_CODING_LENGTH); |
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/* Check if error. Return with error if no memory could be allocated. */ |
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✓✓ |
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if (data_buffer == UX_NULL) |
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/* Do not proceed. Set error code. */ |
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status = UX_MEMORY_INSUFFICIENT; |
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else |
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{ |
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/* Build the buffer from the calling parameter. Cast the calling parameter. */ |
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line_coding = (UX_HOST_CLASS_CDC_ACM_LINE_CODING *) parameter; |
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/* Put the data rate. */ |
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_ux_utility_long_put(data_buffer + UX_HOST_CLASS_CDC_ACM_LINE_CODING_RATE, |
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line_coding -> ux_host_class_cdc_acm_line_coding_dter); |
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/* Then the stop bit. */ |
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*(data_buffer + UX_HOST_CLASS_CDC_ACM_LINE_CODING_STOP_BIT) = |
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(UCHAR) line_coding -> ux_host_class_cdc_acm_line_coding_stop_bit; |
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/* Then the parity. */ |
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*(data_buffer + UX_HOST_CLASS_CDC_ACM_LINE_CODING_PARITY) = |
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(UCHAR) line_coding -> ux_host_class_cdc_acm_line_coding_parity; |
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/* Finally the data bits. */ |
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*(data_buffer + UX_HOST_CLASS_CDC_ACM_LINE_CODING_DATA_BIT) = |
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(UCHAR) line_coding -> ux_host_class_cdc_acm_line_coding_data_bits; |
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/* Send the command to the device. */ |
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status = _ux_host_class_cdc_acm_command(cdc_acm, UX_HOST_CLASS_CDC_ACM_REQ_SET_LINE_CODING, |
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0, data_buffer, UX_HOST_CLASS_CDC_ACM_LINE_CODING_LENGTH); |
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/* We free the resources allocated no matter what. */ |
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_ux_utility_memory_free(data_buffer); |
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} |
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break; |
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case UX_HOST_CLASS_CDC_ACM_IOCTL_GET_LINE_CODING: |
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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_ACM_IOCTL_GET_LINE_CODING, cdc_acm, parameter, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) |
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/* Allocate some cache safe memory for the control command. */ |
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data_buffer = _ux_utility_memory_allocate(UX_SAFE_ALIGN, UX_CACHE_SAFE_MEMORY, UX_HOST_CLASS_CDC_ACM_LINE_CODING_LENGTH); |
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/* Check if error. Return with error if no memory could be allocated. */ |
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✓✓ |
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if (data_buffer == UX_NULL) |
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/* Do not proceed. Set error code. */ |
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status = UX_MEMORY_INSUFFICIENT; |
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else |
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{ |
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/* Send the command to the device. */ |
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status = _ux_host_class_cdc_acm_command(cdc_acm, UX_HOST_CLASS_CDC_ACM_REQ_GET_LINE_CODING, |
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0, data_buffer, UX_HOST_CLASS_CDC_ACM_LINE_CODING_LENGTH); |
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/* Fill in the calling buffer if the result is successful. */ |
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✓✓ |
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if (status == UX_SUCCESS) |
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{ |
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/* Build the buffer from the calling parameter. Cast the calling parameter. */ |
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line_coding = (UX_HOST_CLASS_CDC_ACM_LINE_CODING *) parameter; |
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/* Get the data rate. */ |
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line_coding -> ux_host_class_cdc_acm_line_coding_dter = _ux_utility_long_get(data_buffer + UX_HOST_CLASS_CDC_ACM_LINE_CODING_RATE); |
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/* Then the stop bit. */ |
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line_coding -> ux_host_class_cdc_acm_line_coding_stop_bit = |
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(ULONG) *(data_buffer + UX_HOST_CLASS_CDC_ACM_LINE_CODING_STOP_BIT); |
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/* Then the parity. */ |
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line_coding -> ux_host_class_cdc_acm_line_coding_parity = |
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(ULONG) *(data_buffer + UX_HOST_CLASS_CDC_ACM_LINE_CODING_PARITY); |
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/* Finally the data bits. */ |
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line_coding -> ux_host_class_cdc_acm_line_coding_data_bits = |
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(ULONG) *(data_buffer + UX_HOST_CLASS_CDC_ACM_LINE_CODING_DATA_BIT); |
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} |
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/* We free the resources allocated no matter what. */ |
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_ux_utility_memory_free(data_buffer); |
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} |
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break; |
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case UX_HOST_CLASS_CDC_ACM_IOCTL_SET_LINE_STATE: |
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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_ACM_IOCTL_SET_LINE_STATE, cdc_acm, parameter, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) |
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/* Cast the calling parameter. */ |
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line_state = (UX_HOST_CLASS_CDC_ACM_LINE_STATE *) parameter; |
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/* Build the value field. */ |
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value = (line_state -> ux_host_class_cdc_acm_line_state_dtr | |
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(line_state -> ux_host_class_cdc_acm_line_state_rts << 1)); |
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/* Send the command to the device. */ |
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status = _ux_host_class_cdc_acm_command(cdc_acm, UX_HOST_CLASS_CDC_ACM_REQ_SET_LINE_STATE, |
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value, UX_NULL,0); |
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break; |
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case UX_HOST_CLASS_CDC_ACM_IOCTL_SEND_BREAK : |
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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_ACM_IOCTL_SEND_BREAK, cdc_acm, parameter, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) |
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/* Build the value field. */ |
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value = *((ULONG *) parameter); |
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/* Send the command to the device. */ |
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status = _ux_host_class_cdc_acm_command(cdc_acm, UX_HOST_CLASS_CDC_ACM_REQ_SEND_BREAK, |
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value, UX_NULL,0); |
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break; |
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case UX_HOST_CLASS_CDC_ACM_IOCTL_ABORT_IN_PIPE : |
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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_ACM_IOCTL_ABORT_IN_PIPE, cdc_acm, cdc_acm -> ux_host_class_cdc_acm_bulk_in_endpoint, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) |
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/* We need to abort transactions on the bulk In pipe. */ |
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_ux_host_stack_endpoint_transfer_abort(cdc_acm -> ux_host_class_cdc_acm_bulk_in_endpoint); |
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/* Status is successful. */ |
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status = UX_SUCCESS; |
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break; |
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case UX_HOST_CLASS_CDC_ACM_IOCTL_ABORT_OUT_PIPE : |
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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_ACM_IOCTL_ABORT_OUT_PIPE, cdc_acm, cdc_acm -> ux_host_class_cdc_acm_bulk_out_endpoint, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) |
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/* We need to abort transactions on the bulk Out pipe. */ |
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_ux_host_stack_endpoint_transfer_abort(cdc_acm -> ux_host_class_cdc_acm_bulk_out_endpoint); |
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#if defined(UX_HOST_STANDALONE) |
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/* Reset write state. */ |
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cdc_acm -> ux_host_class_cdc_acm_write_state = UX_STATE_RESET; |
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#endif |
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/* Status is successful. */ |
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status = UX_SUCCESS; |
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break; |
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case UX_HOST_CLASS_CDC_ACM_IOCTL_NOTIFICATION_CALLBACK : |
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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_ACM_IOCTL_NOTIFICATION_CALLBACK, cdc_acm, parameter, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) |
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/* Register a callback when the line state has changed. */ |
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callback_function = ((VOID (*) (struct UX_HOST_CLASS_CDC_ACM_STRUCT *, ULONG, ULONG )) (ALIGN_TYPE)parameter); |
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cdc_acm -> ux_host_class_cdc_acm_device_status_change_callback = callback_function; |
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/* Status is successful. */ |
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status = UX_SUCCESS; |
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break; |
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case UX_HOST_CLASS_CDC_ACM_IOCTL_GET_DEVICE_STATUS : |
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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_ACM_IOCTL_GET_DEVICE_STATUS, cdc_acm, cdc_acm -> ux_host_class_cdc_acm_device_state, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) |
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/* Return the device status. */ |
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*((ULONG *) parameter) = cdc_acm -> ux_host_class_cdc_acm_device_state; |
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/* Status is successful. */ |
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status = UX_SUCCESS; |
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break; |
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#if defined(UX_HOST_STANDALONE) |
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case UX_HOST_CLASS_CDC_ACM_IOCTL_WRITE_CALLBACK: |
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/* Register a callback when write is done. */ |
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write_callback_function = ((VOID (*) (struct UX_HOST_CLASS_CDC_ACM_STRUCT *, UINT, ULONG )) (ALIGN_TYPE)parameter); |
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cdc_acm -> ux_host_class_cdc_acm_write_callback = write_callback_function; |
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/* Status is successful. */ |
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status = UX_SUCCESS; |
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break; |
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case UX_HOST_CLASS_CDC_ACM_IOCTL_GET_WRITE_STATUS: |
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/* Check write state. */ |
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if (cdc_acm -> ux_host_class_cdc_acm_write_state == UX_STATE_WAIT) |
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{ |
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status = UX_BUSY; |
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} |
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else |
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{ |
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/* Get transfer for write. */ |
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transfer = &cdc_acm -> ux_host_class_cdc_acm_bulk_out_endpoint -> |
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ux_endpoint_transfer_request; |
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/* Status is from transfer completion code. */ |
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status = transfer -> ux_transfer_request_completion_code; |
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/* Actual length is from latest write count. */ |
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*(ULONG *)parameter = cdc_acm -> ux_host_class_cdc_acm_write_count; |
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} |
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break; |
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#endif |
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default: |
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/* Error trap. */ |
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_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, UX_FUNCTION_NOT_SUPPORTED); |
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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_FUNCTION_NOT_SUPPORTED, 0, 0, 0, UX_TRACE_ERRORS, 0, 0) |
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/* Function not supported. Return an error. */ |
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status = UX_FUNCTION_NOT_SUPPORTED; |
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} |
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328 |
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/* Return status to caller. */ |
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return(status); |
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} |
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/**************************************************************************/ |
334 |
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/* */ |
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/* FUNCTION RELEASE */ |
336 |
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/* */ |
337 |
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/* _uxe_host_class_cdc_acm_ioctl PORTABLE C */ |
338 |
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/* 6.3.0 */ |
339 |
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/* AUTHOR */ |
340 |
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/* */ |
341 |
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/* Chaoqiong Xiao, Microsoft Corporation */ |
342 |
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/* */ |
343 |
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/* DESCRIPTION */ |
344 |
|
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/* */ |
345 |
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/* This function checks errors in CDC ACM ioctl function call. */ |
346 |
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/* */ |
347 |
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/* INPUT */ |
348 |
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/* */ |
349 |
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/* cdc_acm Pointer to CDC ACM class */ |
350 |
|
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/* ioctl_function ioctl function */ |
351 |
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/* parameter pointer to structure */ |
352 |
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/* */ |
353 |
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/* OUTPUT */ |
354 |
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/* */ |
355 |
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/* Status */ |
356 |
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/* */ |
357 |
|
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/* CALLS */ |
358 |
|
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/* */ |
359 |
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/* _ux_host_class_cdc_acm_ioctl CDC ACM ioctl */ |
360 |
|
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/* */ |
361 |
|
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/* CALLED BY */ |
362 |
|
|
/* */ |
363 |
|
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/* Application */ |
364 |
|
|
/* */ |
365 |
|
|
/**************************************************************************/ |
366 |
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UINT _uxe_host_class_cdc_acm_ioctl(UX_HOST_CLASS_CDC_ACM *cdc_acm, ULONG ioctl_function, |
367 |
|
|
VOID *parameter) |
368 |
|
|
{ |
369 |
|
|
|
370 |
|
|
/* Sanity checks. */ |
371 |
|
|
if (cdc_acm == UX_NULL) |
372 |
|
|
return(UX_INVALID_PARAMETER); |
373 |
|
|
|
374 |
|
|
/* Invoke CDC ACM ioctl function. */ |
375 |
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return(_ux_host_class_cdc_acm_ioctl(cdc_acm, ioctl_function, parameter)); |
376 |
|
|
|
377 |
|
|
} |