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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2026-present Eclipse ThreadX contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** USBX Component */
/** */
/** Printer Class */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_class_printer.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_class_printer_device_id_get PORTABLE C */
/* 6.3.0 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function obtains the printer IEEE 1284 device ID string */
/* (including length in the first two bytes in big endian format). */
/* */
/* INPUT */
/* */
/* printer Pointer to printer class */
/* descriptor_buffer Pointer to a buffer to fill */
/* IEEE 1284 device ID string */
/* (including length in the */
/* first two bytes in BE format) */
/* length Length of buffer in bytes */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_stack_transfer_request Process transfer request */
/* _ux_utility_memory_allocate Allocate memory block */
/* _ux_utility_memory_compare Compare memory block */
/* _ux_utility_memory_copy Copy memory block */
/* _ux_utility_memory_free Free memory block */
/* _ux_utility_short_get_big_endian Get 16-bit value */
/* */
/* CALLED BY */
/* */
/* Application */
/* */
/**************************************************************************/
UINT _ux_host_class_printer_device_id_get(UX_HOST_CLASS_PRINTER *printer, UCHAR *descriptor_buffer, ULONG length)
{
#if defined(UX_HOST_STANDALONE)
UX_INTERRUPT_SAVE_AREA
#endif
UX_INTERFACE *interface_ptr;
UX_ENDPOINT *control_endpoint;
UX_TRANSFER *transfer_request;
UINT status;
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_PRINTER_DEVICE_ID_GET, printer, descriptor_buffer, length, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0)
/* Protect thread reentry to this instance. */
#if defined(UX_HOST_STANDALONE)
UX_DISABLE
if ((printer -> ux_host_class_printer_flags & UX_HOST_CLASS_PRINTER_FLAG_LOCK) ||
(printer -> ux_host_class_printer_device -> ux_device_flags & UX_DEVICE_FLAG_LOCK))
{
UX_RESTORE
return(UX_BUSY);
}
printer -> ux_host_class_printer_flags |= UX_HOST_CLASS_PRINTER_FLAG_LOCK;
printer -> ux_host_class_printer_device -> ux_device_flags |= UX_DEVICE_FLAG_LOCK;
UX_RESTORE
#else
status = _ux_host_semaphore_get(&printer -> ux_host_class_printer_semaphore, UX_WAIT_FOREVER);
if (status != UX_SUCCESS)
return(status);
/* Protect the control endpoint semaphore here. It will be unprotected in the
transfer request function. */
status = _ux_host_semaphore_get(&printer -> ux_host_class_printer_device -> ux_device_protection_semaphore, UX_WAIT_FOREVER);
/* Check for status. */
if (status != UX_SUCCESS)
{
_ux_host_semaphore_put(&printer -> ux_host_class_printer_semaphore);
return(status);
}
#endif
/* We need to get the default control endpoint transfer request pointer. */
control_endpoint = &printer -> ux_host_class_printer_device -> ux_device_control_endpoint;
transfer_request = &control_endpoint -> ux_endpoint_transfer_request;
/* Need interface for wIndex. */
interface_ptr = printer -> ux_host_class_printer_interface;
/* Create a transfer request for the GET_DEVICE_ID request. */
transfer_request -> ux_transfer_request_data_pointer = descriptor_buffer;
transfer_request -> ux_transfer_request_requested_length = length;
transfer_request -> ux_transfer_request_function = UX_HOST_CLASS_PRINTER_GET_DEVICE_ID;
transfer_request -> ux_transfer_request_type = UX_REQUEST_IN | UX_REQUEST_TYPE_CLASS | UX_REQUEST_TARGET_INTERFACE;
transfer_request -> ux_transfer_request_value = 0; /* Do not support multiple configuration for now. */
transfer_request -> ux_transfer_request_index = ((UINT)interface_ptr -> ux_interface_descriptor.bInterfaceNumber << 8) |
(interface_ptr -> ux_interface_descriptor.bAlternateSetting );
#if defined(UX_HOST_STANDALONE)
/* Enable auto unlock device. */
transfer_request -> ux_transfer_request_flags |= UX_TRANSFER_FLAG_AUTO_DEVICE_UNLOCK;
#endif
/* Send request to HCD layer. */
status = _ux_host_stack_transfer_request(transfer_request);
/* Unprotect thread reentry to this instance. */
_ux_host_class_printer_unlock(printer);
/* Return completion status. */
return(status);
}
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _uxe_host_class_printer_device_id_get PORTABLE C */
/* 6.3.0 */
/* AUTHOR */
/* */
/* Yajun Xia, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function checks errors in printer device ID get function call. */
/* */
/* INPUT */
/* */
/* printer Pointer to printer class */
/* descriptor_buffer Pointer to a buffer to fill */
/* IEEE 1284 device ID string */
/* (including length in the */
/* first two bytes in BE format) */
/* length Length of buffer in bytes */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_class_printer_device_id_get Obtains the printer device ID */
/* */
/* CALLED BY */
/* */
/* Application */
/* */
/**************************************************************************/
UINT _uxe_host_class_printer_device_id_get(UX_HOST_CLASS_PRINTER *printer, UCHAR *descriptor_buffer, ULONG length)
{
/* Sanity checks. */
if ((printer == UX_NULL) || (descriptor_buffer == UX_NULL) || (length == 0))
return(UX_INVALID_PARAMETER);
/* Call the actual printer device ID get function. */
return(_ux_host_class_printer_device_id_get(printer, descriptor_buffer, length));
}
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