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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 */
/** */
/** Host Data Pump Class */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_class_dpump.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_class_dpump_activate PORTABLE C */
/* 6.1.12 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function calls the USBX stack to activate the class. */
/* */
/* INPUT */
/* */
/* command Dpump class command pointer */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_class_dpump_configure Configure dpump class */
/* _ux_host_class_dpump_endpoints_get Get endpoints of dpump */
/* _ux_host_stack_class_instance_create Create class instance */
/* _ux_host_stack_class_instance_destroy Destroy the class instance */
/* _ux_utility_memory_allocate Allocate memory block */
/* _ux_utility_semaphore_create Create dpump semaphore */
/* */
/* CALLED BY */
/* */
/* _ux_host_class_dpump_entry Entry of dpump class */
/* */
/**************************************************************************/
UINT _ux_host_class_dpump_activate(UX_HOST_CLASS_COMMAND *command)
{
UX_INTERFACE *interface_ptr;
UX_HOST_CLASS_DPUMP *dpump;
UINT status;
/* The data pump is always activated by the interface descriptor and not the
device descriptor. */
interface_ptr = (UX_INTERFACE *) command -> ux_host_class_command_container;
/* Obtain memory for this class instance. */
dpump = _ux_utility_memory_allocate(UX_NO_ALIGN, UX_REGULAR_MEMORY, sizeof(UX_HOST_CLASS_DPUMP));
if (dpump == UX_NULL)
return(UX_MEMORY_INSUFFICIENT);
/* Store the class container into this instance. */
dpump -> ux_host_class_dpump_class = command -> ux_host_class_command_class_ptr;
/* Store the interface container into the dpump class instance. */
dpump -> ux_host_class_dpump_interface = interface_ptr;
/* Store the device container into the dpump class instance. */
dpump -> ux_host_class_dpump_device = interface_ptr -> ux_interface_configuration -> ux_configuration_device;
/* This instance of the device must also be stored in the interface container. */
interface_ptr -> ux_interface_class_instance = (VOID *) dpump;
/* Create this class instance. */
_ux_host_stack_class_instance_create(dpump -> ux_host_class_dpump_class, (VOID *) dpump);
/* Configure the dpump. */
status = _ux_host_class_dpump_configure(dpump);
if (status != UX_SUCCESS)
{
_ux_host_stack_class_instance_destroy(dpump -> ux_host_class_dpump_class, (VOID *) dpump);
return(status);
}
/* Get the dpump endpoint(s). We will need to search for Bulk Out and Bulk In endpoints. Do not check for errors
here as the alternate setting for this interface may be 0 which has no endpoints. */
_ux_host_class_dpump_endpoints_get(dpump);
/* Create the semaphore to protect 2 threads from accessing the same dpump instance. */
status = _ux_host_semaphore_create(&dpump -> ux_host_class_dpump_semaphore, "ux_dpump_semaphore", 1);
if (status != UX_SUCCESS)
return(UX_SEMAPHORE_ERROR);
/* Mark the dpump as live now. */
dpump -> ux_host_class_dpump_state = UX_HOST_CLASS_INSTANCE_LIVE;
/* If all is fine and the device is mounted, we may need to inform the application
if a function has been programmed in the system structure. */
if ((status == UX_SUCCESS) && (_ux_system_host -> ux_system_host_change_function != UX_NULL))
{
/* Call system change function. */
_ux_system_host -> ux_system_host_change_function(UX_DEVICE_INSERTION, dpump -> ux_host_class_dpump_class, (VOID *) dpump);
}
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_DPUMP_ACTIVATE, dpump, 0, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0)
/* If trace is enabled, register this object. */
UX_TRACE_OBJECT_REGISTER(UX_TRACE_HOST_OBJECT_TYPE_INTERFACE, dpump, 0, 0, 0)
/* Return completion status. */
return(status);
}
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