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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
/***************************************************************************
* 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 Stack */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_stack_device_configuration_activate PORTABLE C */
/* 6.1.10 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function selects a specific configuration for a device. */
/* When this configuration is set to the device, by default all the */
/* device interface and their associated alternate setting 0 is */
/* activated on the device. */
/* */
/* INPUT */
/* */
/* configuration Pointer to configuration */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_utility_semaphore_get Get semaphore */
/* _ux_utility_semaphore_put Put semaphore */
/* _ux_host_stack_configuration_interface_scan Scan and activate */
/* interfaces */
/* */
/* CALLED BY */
/* */
/* Application */
/* USBX Components */
/* */
/**************************************************************************/
UINT _ux_host_stack_device_configuration_activate(UX_CONFIGURATION *configuration)
{
#if defined(UX_HOST_STANDALONE)
UX_INTERRUPT_SAVE_AREA
#endif
UX_DEVICE *device;
UINT status;
/* Check for validity of the configuration handle. */
if (configuration -> ux_configuration_handle != (ULONG) (ALIGN_TYPE) configuration)
{
/* Error trap. */
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_ENUMERATOR, UX_CONFIGURATION_HANDLE_UNKNOWN);
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_CONFIGURATION_HANDLE_UNKNOWN, configuration, 0, 0, UX_TRACE_ERRORS, 0, 0)
return(UX_CONFIGURATION_HANDLE_UNKNOWN);
}
/* Get the device container for this configuration. */
device = configuration -> ux_configuration_device;
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_STACK_DEVICE_CONFIGURATION_ACTIVATE, device, configuration, 0, 0, UX_TRACE_HOST_STACK_EVENTS, 0, 0)
#if defined(UX_HOST_STANDALONE)
/* Check device lock. */
UX_DISABLE
if (device -> ux_device_flags & UX_DEVICE_FLAG_LOCK)
{
UX_RESTORE
return(UX_BUSY);
}
device -> ux_device_flags |= UX_DEVICE_FLAG_LOCK;
UX_RESTORE
#else
/* Protect the control endpoint semaphore here. It will be unprotected in the
transfer request function. */
status = _ux_host_semaphore_get(&device -> ux_device_protection_semaphore, UX_WAIT_FOREVER);
/* Check for status. */
if (status != UX_SUCCESS)
{
/* Error trap. */
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_ENUMERATOR, UX_SEMAPHORE_ERROR);
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_SEMAPHORE_ERROR, configuration, 0, 0, UX_TRACE_ERRORS, 0, 0)
return(UX_SEMAPHORE_ERROR);
}
#endif
/* Check for the state of the device . If the device is already configured,
we need to cancel the existing configuration before enabling this one. */
if (device -> ux_device_state == UX_DEVICE_CONFIGURED)
{
/* If this configuration is already activated, we are good,
otherwise report error. */
status = (device -> ux_device_current_configuration == configuration) ?
UX_SUCCESS : UX_ALREADY_ACTIVATED;
#if defined(UX_HOST_STANDALONE)
device -> ux_device_flags &= ~UX_DEVICE_FLAG_LOCK;
#else
_ux_host_semaphore_put(&device -> ux_device_protection_semaphore);
#endif
return(status);
}
/* Scan and activate the interfaces. */
status = _ux_host_stack_configuration_interface_scan(configuration);
#if defined(UX_HOST_STANDALONE)
if (status == UX_SUCCESS)
{
/* Place device enum state: LOCK -> SET_CONFIGURE. */
device -> ux_device_enum_trans =
&device -> ux_device_control_endpoint.ux_endpoint_transfer_request;
device -> ux_device_enum_state = UX_HOST_STACK_ENUM_TRANS_LOCK_WAIT;
device -> ux_device_enum_inst.configuration = configuration;
device -> ux_device_enum_next_state = UX_HOST_STACK_ENUM_CONFIG_SET;
/* Set enumeration flag to process enumeration sequence. */
device -> ux_device_flags |= UX_DEVICE_FLAG_ENUM;
/* Wait until enumeration done and device removed. */
while(device -> ux_device_enum_state != UX_STATE_IDLE)
{
_ux_system_host_tasks_run();
}
}
#endif
/* Return completion status. */
return(status);
}
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _uxe_host_stack_device_configuration_activate PORTABLE C */
/* 6.3.0 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function checks errors in host stack configuration activate */
/* function call. */
/* */
/* INPUT */
/* */
/* configuration Pointer to configuration */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _ux_host_stack_device_configuration_activate */
/* Host stack config activate */
/* */
/* CALLED BY */
/* */
/* Application */
/* */
/**************************************************************************/
UINT _uxe_host_stack_device_configuration_activate(UX_CONFIGURATION *configuration)
{
/* Sanity check. */
if (configuration == UX_NULL)
return(UX_INVALID_PARAMETER);
/* Invoke configuration activate function. */
return(_ux_host_stack_device_configuration_activate(configuration));
}
|
