1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/***************************************************************************
* 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_deactivate PORTABLE C */
/* 6.1.10 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is called when this instance of the dpump has been */
/* removed from the bus either directly or indirectly. The bulk in\out */
/* pipes will be destroyed and the instanced removed. */
/* */
/* INPUT */
/* */
/* command Data Pump class command pointer */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_stack_class_instance_destroy Destroy the class instance */
/* _ux_host_stack_endpoint_transfer_abort Abort endpoint transfer */
/* _ux_utility_memory_free Free memory block */
/* _ux_utility_semaphore_get Get protection semaphore */
/* _ux_utility_semaphore_delete Delete protection semaphore */
/* _ux_utility_thread_sleep Sleep thread */
/* */
/* CALLED BY */
/* */
/* _ux_host_class_dpump_entry Entry of dpump class */
/* */
/**************************************************************************/
UINT _ux_host_class_dpump_deactivate(UX_HOST_CLASS_COMMAND *command)
{
UX_HOST_CLASS_DPUMP *dpump;
UINT status;
/* Get the instance for this class. */
dpump = (UX_HOST_CLASS_DPUMP *) command -> ux_host_class_command_instance;
/* The dpump is being shut down. */
dpump -> ux_host_class_dpump_state = UX_HOST_CLASS_INSTANCE_SHUTDOWN;
/* Protect thread reentry to this instance. */
status = _ux_host_semaphore_get(&dpump -> ux_host_class_dpump_semaphore, UX_WAIT_FOREVER);
if (status != UX_SUCCESS)
{
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_HOST_CLASS_INSTANCE_UNKNOWN, dpump, 0, 0, UX_TRACE_ERRORS, 0, 0)
return(UX_HOST_CLASS_INSTANCE_UNKNOWN);
}
/* We need to abort transactions on the bulk Out pipe. */
_ux_host_stack_endpoint_transfer_abort(dpump -> ux_host_class_dpump_bulk_out_endpoint);
/* We need to abort transactions on the bulk In pipe. */
_ux_host_stack_endpoint_transfer_abort(dpump -> ux_host_class_dpump_bulk_in_endpoint);
/* If the class instance was busy, let it finish properly and not return. */
_ux_host_thread_sleep(UX_ENUMERATION_THREAD_WAIT);
/* Destroy the instance. */
_ux_host_stack_class_instance_destroy(dpump -> ux_host_class_dpump_class, (VOID *) dpump);
/* Destroy the semaphore. */
_ux_host_semaphore_delete(&dpump -> ux_host_class_dpump_semaphore);
/* Before we free the device resources, we need to inform the application
that the device is removed. */
if (_ux_system_host -> ux_system_host_change_function != UX_NULL)
{
/* Inform the application the device is removed. */
_ux_system_host -> ux_system_host_change_function(UX_DEVICE_REMOVAL, 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_DEACTIVATE, dpump, 0, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0)
/* If trace is enabled, register this object. */
UX_TRACE_OBJECT_UNREGISTER(dpump);
/* Free the dpump instance memory. */
_ux_utility_memory_free(dpump);
/* Return successful status. */
return(UX_SUCCESS);
}
|
