1 |
|
|
/*************************************************************************** |
2 |
|
|
* Copyright (c) 2024 Microsoft Corporation |
3 |
|
|
* Copyright (c) 2026-present Eclipse ThreadX contributors |
4 |
|
|
* |
5 |
|
|
* This program and the accompanying materials are made available under the |
6 |
|
|
* terms of the MIT License which is available at |
7 |
|
|
* https://opensource.org/licenses/MIT. |
8 |
|
|
* |
9 |
|
|
* SPDX-License-Identifier: MIT |
10 |
|
|
**************************************************************************/ |
11 |
|
|
|
12 |
|
|
|
13 |
|
|
/**************************************************************************/ |
14 |
|
|
/**************************************************************************/ |
15 |
|
|
/** */ |
16 |
|
|
/** USBX Component */ |
17 |
|
|
/** */ |
18 |
|
|
/** Device Stack */ |
19 |
|
|
/** */ |
20 |
|
|
/**************************************************************************/ |
21 |
|
|
/**************************************************************************/ |
22 |
|
|
|
23 |
|
|
#define UX_SOURCE_CODE |
24 |
|
|
|
25 |
|
|
|
26 |
|
|
/* Include necessary system files. */ |
27 |
|
|
|
28 |
|
|
#include "ux_api.h" |
29 |
|
|
#include "ux_device_stack.h" |
30 |
|
|
|
31 |
|
|
|
32 |
|
|
/**************************************************************************/ |
33 |
|
|
/* */ |
34 |
|
|
/* FUNCTION RELEASE */ |
35 |
|
|
/* */ |
36 |
|
|
/* _ux_device_stack_clear_feature PORTABLE C */ |
37 |
|
|
/* 6.1.12 */ |
38 |
|
|
/* AUTHOR */ |
39 |
|
|
/* */ |
40 |
|
|
/* Chaoqiong Xiao, Microsoft Corporation */ |
41 |
|
|
/* */ |
42 |
|
|
/* DESCRIPTION */ |
43 |
|
|
/* */ |
44 |
|
|
/* This function clears a specific feature (Device, Interface, */ |
45 |
|
|
/* Endpoint ....). */ |
46 |
|
|
/* */ |
47 |
|
|
/* INPUT */ |
48 |
|
|
/* */ |
49 |
|
|
/* request_type Request type */ |
50 |
|
|
/* request_value Request value */ |
51 |
|
|
/* request_index Request index */ |
52 |
|
|
/* */ |
53 |
|
|
/* OUTPUT */ |
54 |
|
|
/* */ |
55 |
|
|
/* Completion Status */ |
56 |
|
|
/* */ |
57 |
|
|
/* CALLS */ |
58 |
|
|
/* */ |
59 |
|
|
/* (ux_slave_dcd_function) DCD dispatch function */ |
60 |
|
|
/* */ |
61 |
|
|
/* CALLED BY */ |
62 |
|
|
/* */ |
63 |
|
|
/* Device Stack */ |
64 |
|
|
/* */ |
65 |
|
|
/**************************************************************************/ |
66 |
|
1427 |
UINT _ux_device_stack_clear_feature(ULONG request_type, ULONG request_value, ULONG request_index) |
67 |
|
|
{ |
68 |
|
|
|
69 |
|
|
UX_SLAVE_DCD *dcd; |
70 |
|
|
UX_SLAVE_DEVICE *device; |
71 |
|
|
UX_SLAVE_INTERFACE *interface_ptr; |
72 |
|
|
UX_SLAVE_ENDPOINT *endpoint; |
73 |
|
|
UX_SLAVE_ENDPOINT *endpoint_target; |
74 |
|
|
|
75 |
|
|
UX_PARAMETER_NOT_USED(request_value); |
76 |
|
|
|
77 |
|
|
/* If trace is enabled, insert this event into the trace buffer. */ |
78 |
|
|
UX_TRACE_IN_LINE_INSERT(UX_TRACE_DEVICE_STACK_CLEAR_FEATURE, request_type, request_value, request_index, 0, UX_TRACE_DEVICE_STACK_EVENTS, 0, 0) |
79 |
|
|
|
80 |
|
|
/* Get the pointer to the DCD. */ |
81 |
|
1427 |
dcd = &_ux_system_slave -> ux_system_slave_dcd; |
82 |
|
|
|
83 |
|
|
/* Get the pointer to the device. */ |
84 |
|
1427 |
device = &_ux_system_slave -> ux_system_slave_device; |
85 |
|
|
|
86 |
|
|
/* Get the control endpoint for the device. */ |
87 |
|
1427 |
endpoint = &device -> ux_slave_device_control_endpoint; |
88 |
|
|
|
89 |
|
|
/* The request can be for either the device or the endpoint. */ |
90 |
✓✓✓ |
1427 |
switch (request_type & UX_REQUEST_TARGET) |
91 |
|
|
{ |
92 |
|
|
|
93 |
|
4 |
case UX_REQUEST_TARGET_DEVICE: |
94 |
|
|
|
95 |
|
|
/* Check if we have a DEVICE_REMOTE_WAKEUP Feature. */ |
96 |
✓✓ |
4 |
if (request_value == UX_REQUEST_FEATURE_DEVICE_REMOTE_WAKEUP) |
97 |
|
|
{ |
98 |
|
|
|
99 |
|
|
/* Check if we have the capability. */ |
100 |
✓✓ |
3 |
if (_ux_system_slave -> ux_system_slave_remote_wakeup_capability) |
101 |
|
|
{ |
102 |
|
|
|
103 |
|
|
/* Disable the feature. */ |
104 |
|
2 |
_ux_system_slave -> ux_system_slave_remote_wakeup_enabled = UX_FALSE; |
105 |
|
|
} |
106 |
|
|
|
107 |
|
|
else |
108 |
|
|
|
109 |
|
|
/* Protocol error. */ |
110 |
|
1 |
return (UX_FUNCTION_NOT_SUPPORTED); |
111 |
|
|
} |
112 |
|
|
|
113 |
|
3 |
break; |
114 |
|
|
|
115 |
|
1422 |
case UX_REQUEST_TARGET_ENDPOINT: |
116 |
|
|
|
117 |
|
|
/* The only clear feature for endpoint is ENDPOINT_STALL. This clears |
118 |
|
|
the endpoint of the stall situation and resets its data toggle. |
119 |
|
|
We need to find the endpoint through the interface(s). */ |
120 |
|
1422 |
interface_ptr = device -> ux_slave_device_first_interface; |
121 |
|
|
|
122 |
|
|
#if !defined(UX_DEVICE_INITIALIZE_FRAMEWORK_SCAN_DISABLE) || UX_MAX_DEVICE_INTERFACES > 1 |
123 |
✓✓ |
1427 |
while (interface_ptr != UX_NULL) |
124 |
|
|
{ |
125 |
|
|
#endif |
126 |
|
|
|
127 |
|
|
/* Get the first endpoint for this interface. */ |
128 |
|
1426 |
endpoint_target = interface_ptr -> ux_slave_interface_first_endpoint; |
129 |
|
|
|
130 |
|
|
/* Parse all the endpoints. */ |
131 |
✓✓ |
1747 |
while (endpoint_target != UX_NULL) |
132 |
|
|
{ |
133 |
|
|
|
134 |
|
|
/* Check the endpoint index. */ |
135 |
✓✓ |
1742 |
if (endpoint_target -> ux_slave_endpoint_descriptor.bEndpointAddress == request_index) |
136 |
|
|
{ |
137 |
|
|
|
138 |
|
|
/* Reset the endpoint. */ |
139 |
|
1421 |
dcd -> ux_slave_dcd_function(dcd, UX_DCD_RESET_ENDPOINT, endpoint_target); |
140 |
|
|
|
141 |
|
|
/* Mark its state now. */ |
142 |
|
1421 |
endpoint_target -> ux_slave_endpoint_state = UX_ENDPOINT_RESET; |
143 |
|
|
|
144 |
|
|
/* Return the function status. */ |
145 |
|
1421 |
return(UX_SUCCESS); |
146 |
|
|
} |
147 |
|
|
|
148 |
|
|
/* Next endpoint. */ |
149 |
|
321 |
endpoint_target = endpoint_target -> ux_slave_endpoint_next_endpoint; |
150 |
|
|
} |
151 |
|
|
|
152 |
|
|
#if !defined(UX_DEVICE_INITIALIZE_FRAMEWORK_SCAN_DISABLE) || UX_MAX_DEVICE_INTERFACES > 1 |
153 |
|
|
/* Next interface. */ |
154 |
|
5 |
interface_ptr = interface_ptr -> ux_slave_interface_next_interface; |
155 |
|
|
} |
156 |
|
|
#endif |
157 |
|
|
|
158 |
|
|
/* Intentional fallthrough and go into the default case. */ |
159 |
|
|
/* fall through */ |
160 |
|
|
|
161 |
|
|
/* We get here when the endpoint is wrong. Should not happen though. */ |
162 |
|
|
default: |
163 |
|
|
|
164 |
|
|
/* We stall the command. */ |
165 |
|
2 |
dcd -> ux_slave_dcd_function(dcd, UX_DCD_STALL_ENDPOINT, endpoint); |
166 |
|
|
|
167 |
|
|
/* No more work to do here. The command failed but the upper layer does not depend on it. */ |
168 |
|
2 |
return(UX_SUCCESS); |
169 |
|
|
} |
170 |
|
|
|
171 |
|
|
/* Return the function status. */ |
172 |
|
3 |
return(UX_SUCCESS); |
173 |
|
|
} |
174 |
|
|
|