/**************************************************************************/ /* */ /* Copyright (c) Microsoft Corporation. All rights reserved. */ /* */ /* This software is licensed under the Microsoft Software License */ /* Terms for Microsoft Azure RTOS. Full text of the license can be */ /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */ /* and in the root directory of this software. */ /* */ /**************************************************************************/ /**************************************************************************/ /**************************************************************************/ /** */ /** USBX Component */ /** */ /** Generic Serial Host module class */ /** */ /**************************************************************************/ /**************************************************************************/ /* Include necessary system files. */ #define UX_SOURCE_CODE #include "ux_api.h" #include "ux_host_class_gser.h" #include "ux_host_stack.h" /**************************************************************************/ /* */ /* FUNCTION RELEASE */ /* */ /* _ux_host_class_gser_ioctl PORTABLE C */ /* 6.1 */ /* AUTHOR */ /* */ /* Chaoqiong Xiao, Microsoft Corporation */ /* */ /* DESCRIPTION */ /* */ /* This function is the ioctl entry point for the application to */ /* configure the ACM device. */ /* */ /* */ /* INPUT */ /* */ /* acm Pointer to acm class */ /* ioctl_function ioctl function */ /* parameter pointer to structure */ /* */ /* OUTPUT */ /* */ /* Completion Status */ /* */ /* CALLS */ /* */ /* _ux_host_class_gser_command Send command to acm device */ /* _ux_host_stack_endpoint_transfer_abort */ /* Abort transfer */ /* _ux_utility_memory_allocate Allocate memory */ /* _ux_utility_memory_free Free memory */ /* _ux_utility_long_put Put 32-bit value */ /* */ /* CALLED BY */ /* */ /* Storage Class */ /* */ /* RELEASE HISTORY */ /* */ /* DATE NAME DESCRIPTION */ /* */ /* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */ /* 09-30-2020 Chaoqiong Xiao Modified comment(s), */ /* resulting in version 6.1 */ /* */ /**************************************************************************/ UINT _ux_host_class_gser_ioctl(UX_HOST_CLASS_GSER *gser, ULONG interface_index, ULONG ioctl_function, VOID *parameter) { UINT status; UCHAR *data_buffer; UX_HOST_CLASS_GSER_LINE_CODING *line_coding; UX_HOST_CLASS_GSER_LINE_STATE *line_state; VOID (*callback_function) (struct UX_HOST_CLASS_GSER_STRUCT *, ULONG, ULONG ); ULONG value; /* Ensure the instance is valid. */ if (gser -> ux_host_class_gser_state != UX_HOST_CLASS_INSTANCE_LIVE) { /* If trace is enabled, insert this event into the trace buffer. */ UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_HOST_CLASS_INSTANCE_UNKNOWN, gser, 0, 0, UX_TRACE_ERRORS, 0, 0) return(UX_HOST_CLASS_INSTANCE_UNKNOWN); } /* The command request will tell us we need to do here. */ switch (ioctl_function) { case UX_HOST_CLASS_GSER_IOCTL_SET_LINE_CODING: /* If trace is enabled, insert this event into the trace buffer. */ UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_GSER_IOCTL_SET_LINE_CODING, gser, parameter, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) /* Allocate some cache safe memory for the control command. */ data_buffer = _ux_utility_memory_allocate(UX_SAFE_ALIGN, UX_CACHE_SAFE_MEMORY, UX_HOST_CLASS_GSER_LINE_CODING_LENGTH); /* Check if error. Return with error if no memory could be allocated. */ if (data_buffer == UX_NULL) /* Do not proceed. Set error code. */ status = UX_MEMORY_INSUFFICIENT; else { /* Build the buffer from the calling parameter. Cast the calling parameter. */ line_coding = (UX_HOST_CLASS_GSER_LINE_CODING *) parameter; /* Put the data rate. */ _ux_utility_long_put(data_buffer + UX_HOST_CLASS_GSER_LINE_CODING_RATE, line_coding -> ux_host_class_gser_line_coding_dter); /* Then the stop bit. */ *(data_buffer + UX_HOST_CLASS_GSER_LINE_CODING_STOP_BIT) = (UCHAR) line_coding -> ux_host_class_gser_line_coding_stop_bit; /* Then the parity. */ *(data_buffer + UX_HOST_CLASS_GSER_LINE_CODING_PARITY) = (UCHAR) line_coding -> ux_host_class_gser_line_coding_parity; /* Finally the data bits. */ *(data_buffer + UX_HOST_CLASS_GSER_LINE_CODING_DATA_BIT) = (UCHAR) line_coding -> ux_host_class_gser_line_coding_data_bits; /* Send the command to the device. */ status = _ux_host_class_gser_command(gser, interface_index, UX_HOST_CLASS_GSER_REQ_SET_LINE_CODING, 0, data_buffer, UX_HOST_CLASS_GSER_LINE_CODING_LENGTH); /* We free the resources allocated no matter what. */ _ux_utility_memory_free(data_buffer); } break; case UX_HOST_CLASS_GSER_IOCTL_GET_LINE_CODING: /* If trace is enabled, insert this event into the trace buffer. */ UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_GSER_IOCTL_GET_LINE_CODING, gser, parameter, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) /* Allocate some cache safe memory for the control command. */ data_buffer = _ux_utility_memory_allocate(UX_SAFE_ALIGN, UX_CACHE_SAFE_MEMORY, UX_HOST_CLASS_GSER_LINE_CODING_LENGTH); /* Check if error. Return with error if no memory could be allocated. */ if (data_buffer == UX_NULL) /* Do not proceed. Set error code. */ status = UX_MEMORY_INSUFFICIENT; else { /* Send the command to the device. */ status = _ux_host_class_gser_command(gser, interface_index, UX_HOST_CLASS_GSER_REQ_GET_LINE_CODING, 0, data_buffer, UX_HOST_CLASS_GSER_LINE_CODING_LENGTH); /* Fill in the calling buffer if the result is successful. */ if (status == UX_SUCCESS) { /* Build the buffer from the calling parameter. Cast the calling parameter. */ line_coding = (UX_HOST_CLASS_GSER_LINE_CODING *) parameter; /* Get the data rate. */ line_coding -> ux_host_class_gser_line_coding_dter = _ux_utility_long_get(data_buffer + UX_HOST_CLASS_GSER_LINE_CODING_RATE); /* Then the stop bit. */ line_coding -> ux_host_class_gser_line_coding_stop_bit = (ULONG) *(data_buffer + UX_HOST_CLASS_GSER_LINE_CODING_STOP_BIT); /* Then the parity. */ line_coding -> ux_host_class_gser_line_coding_parity = (ULONG) *(data_buffer + UX_HOST_CLASS_GSER_LINE_CODING_PARITY); /* Finally the data bits. */ line_coding -> ux_host_class_gser_line_coding_data_bits = (ULONG) *(data_buffer + UX_HOST_CLASS_GSER_LINE_CODING_DATA_BIT); } /* We free the resources allocated no matter what. */ _ux_utility_memory_free(data_buffer); } break; case UX_HOST_CLASS_GSER_IOCTL_SET_LINE_STATE: /* If trace is enabled, insert this event into the trace buffer. */ UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_GSER_IOCTL_SET_LINE_STATE, gser, parameter, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) /* Cast the calling parameter. */ line_state = (UX_HOST_CLASS_GSER_LINE_STATE *) parameter; /* Build the value field. */ value = (line_state -> ux_host_class_gser_line_state_dtr | (line_state -> ux_host_class_gser_line_state_rts << 1)); /* Send the command to the device. */ status = _ux_host_class_gser_command(gser, interface_index, UX_HOST_CLASS_GSER_REQ_SET_LINE_STATE, value, UX_NULL,0); break; case UX_HOST_CLASS_GSER_IOCTL_SEND_BREAK : /* If trace is enabled, insert this event into the trace buffer. */ UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_GSER_IOCTL_SEND_BREAK, gser, parameter, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) /* Build the value field. */ value = *((ULONG *) parameter); /* Send the command to the device. */ status = _ux_host_class_gser_command(gser, interface_index, UX_HOST_CLASS_GSER_REQ_SEND_BREAK, value, UX_NULL,0); break; case UX_HOST_CLASS_GSER_IOCTL_ABORT_IN_PIPE : /* If trace is enabled, insert this event into the trace buffer. */ UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_GSER_IOCTL_ABORT_IN_PIPE, gser, gser -> ux_host_class_gser_interface_array[interface_index].ux_host_class_gser_bulk_in_endpoint, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) /* We need to abort transactions on the bulk In pipe. */ _ux_host_stack_endpoint_transfer_abort(gser -> ux_host_class_gser_interface_array[interface_index].ux_host_class_gser_bulk_in_endpoint); /* Status is successful. */ status = UX_SUCCESS; break; case UX_HOST_CLASS_GSER_IOCTL_ABORT_OUT_PIPE : /* If trace is enabled, insert this event into the trace buffer. */ UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_GSER_IOCTL_ABORT_OUT_PIPE, gser, gser -> ux_host_class_gser_interface_array[interface_index].ux_host_class_gser_bulk_out_endpoint, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) /* We need to abort transactions on the bulk Out pipe. */ _ux_host_stack_endpoint_transfer_abort(gser -> ux_host_class_gser_interface_array[interface_index].ux_host_class_gser_bulk_out_endpoint); /* Status is successful. */ status = UX_SUCCESS; break; case UX_HOST_CLASS_GSER_IOCTL_NOTIFICATION_CALLBACK : /* If trace is enabled, insert this event into the trace buffer. */ UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_GSER_IOCTL_NOTIFICATION_CALLBACK, gser, parameter, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) /* Register a callback when the line state has changed. */ callback_function = ((VOID (*) (struct UX_HOST_CLASS_GSER_STRUCT *, ULONG, ULONG )) (ALIGN_TYPE)parameter); gser -> ux_host_class_gser_device_status_change_callback = callback_function; /* Status is successful. */ status = UX_SUCCESS; break; case UX_HOST_CLASS_GSER_IOCTL_GET_DEVICE_STATUS : /* If trace is enabled, insert this event into the trace buffer. */ UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_GSER_IOCTL_GET_DEVICE_STATUS, gser, gser -> ux_host_class_gser_device_state, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) /* Return the device status. */ * ((ULONG *) parameter) = gser -> ux_host_class_gser_device_state; /* Status is successful. */ status = UX_SUCCESS; break; default: /* If trace is enabled, insert this event into the trace buffer. */ UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_FUNCTION_NOT_SUPPORTED, 0, 0, 0, UX_TRACE_ERRORS, 0, 0) /* Function not supported. Return an error. */ status = UX_FUNCTION_NOT_SUPPORTED; } /* Return status to caller. */ return(status); }