1 |
|
|
/*************************************************************************** |
2 |
|
|
* Copyright (c) 2024 Microsoft Corporation |
3 |
|
|
* |
4 |
|
|
* This program and the accompanying materials are made available under the |
5 |
|
|
* terms of the MIT License which is available at |
6 |
|
|
* https://opensource.org/licenses/MIT. |
7 |
|
|
* |
8 |
|
|
* SPDX-License-Identifier: MIT |
9 |
|
|
**************************************************************************/ |
10 |
|
|
|
11 |
|
|
|
12 |
|
|
/**************************************************************************/ |
13 |
|
|
/**************************************************************************/ |
14 |
|
|
/** */ |
15 |
|
|
/** USBX Component */ |
16 |
|
|
/** */ |
17 |
|
|
/** HUB Class */ |
18 |
|
|
/** */ |
19 |
|
|
/**************************************************************************/ |
20 |
|
|
/**************************************************************************/ |
21 |
|
|
|
22 |
|
|
|
23 |
|
|
/* Include necessary system files. */ |
24 |
|
|
|
25 |
|
|
#define UX_SOURCE_CODE |
26 |
|
|
|
27 |
|
|
#include "ux_api.h" |
28 |
|
|
#include "ux_host_class_hub.h" |
29 |
|
|
#include "ux_host_stack.h" |
30 |
|
|
|
31 |
|
|
|
32 |
|
|
/**************************************************************************/ |
33 |
|
|
/* */ |
34 |
|
|
/* FUNCTION RELEASE */ |
35 |
|
|
/* */ |
36 |
|
|
/* _ux_host_class_hub_deactivate PORTABLE C */ |
37 |
|
|
/* 6.3.0 */ |
38 |
|
|
/* AUTHOR */ |
39 |
|
|
/* */ |
40 |
|
|
/* Chaoqiong Xiao, Microsoft Corporation */ |
41 |
|
|
/* */ |
42 |
|
|
/* DESCRIPTION */ |
43 |
|
|
/* */ |
44 |
|
|
/* This function is called when this instance of the HUB has been */ |
45 |
|
|
/* removed from the bus either directly or indirectly. The interrupt */ |
46 |
|
|
/* pipe will be destroyed and the instance removed. */ |
47 |
|
|
/* */ |
48 |
|
|
/* INPUT */ |
49 |
|
|
/* */ |
50 |
|
|
/* command Pointer to class command */ |
51 |
|
|
/* */ |
52 |
|
|
/* OUTPUT */ |
53 |
|
|
/* */ |
54 |
|
|
/* Completion Status */ |
55 |
|
|
/* */ |
56 |
|
|
/* CALLS */ |
57 |
|
|
/* */ |
58 |
|
|
/* _ux_host_stack_class_instance_destroy Destroy class instance */ |
59 |
|
|
/* _ux_host_stack_device_remove Remove device */ |
60 |
|
|
/* _ux_host_stack_endpoint_transfer_abort */ |
61 |
|
|
/* Abort transfer */ |
62 |
|
|
/* _ux_utility_memory_free Release memory block */ |
63 |
|
|
/* _ux_host_semaphore_get Get semaphore */ |
64 |
|
|
/* _ux_host_semaphore_put Release semaphore */ |
65 |
|
|
/* _ux_utility_thread_schedule_other Schedule other threads */ |
66 |
|
|
/* */ |
67 |
|
|
/* CALLED BY */ |
68 |
|
|
/* */ |
69 |
|
|
/* HUB Class */ |
70 |
|
|
/* */ |
71 |
|
|
/* RELEASE HISTORY */ |
72 |
|
|
/* */ |
73 |
|
|
/* DATE NAME DESCRIPTION */ |
74 |
|
|
/* */ |
75 |
|
|
/* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */ |
76 |
|
|
/* 09-30-2020 Chaoqiong Xiao Modified comment(s), */ |
77 |
|
|
/* optimized based on compile */ |
78 |
|
|
/* definitions, */ |
79 |
|
|
/* resulting in version 6.1 */ |
80 |
|
|
/* 01-31-2022 Chaoqiong Xiao Modified comment(s), */ |
81 |
|
|
/* refined macros names, */ |
82 |
|
|
/* resulting in version 6.1.10 */ |
83 |
|
|
/* 07-29-2022 Chaoqiong Xiao Modified comment(s), */ |
84 |
|
|
/* added standalone support, */ |
85 |
|
|
/* resulting in version 6.1.12 */ |
86 |
|
|
/* 10-31-2023 Chaoqiong Xiao Modified comment(s), */ |
87 |
|
|
/* improved deactivate flow, */ |
88 |
|
|
/* resulting in version 6.3.0 */ |
89 |
|
|
/* */ |
90 |
|
|
/**************************************************************************/ |
91 |
|
36 |
UINT _ux_host_class_hub_deactivate(UX_HOST_CLASS_COMMAND *command) |
92 |
|
|
{ |
93 |
|
|
|
94 |
|
|
UX_HOST_CLASS_HUB *hub; |
95 |
|
|
UX_HCD *hcd; |
96 |
|
36 |
UX_TRANSFER *transfer_request = UX_NULL; |
97 |
|
|
UINT port_index; |
98 |
|
|
|
99 |
|
|
|
100 |
|
|
/* Get the instance to the class. */ |
101 |
|
36 |
hub = (UX_HOST_CLASS_HUB *) command -> ux_host_class_command_instance; |
102 |
|
|
|
103 |
|
|
/* Get the HCD used by this instance. */ |
104 |
|
36 |
hcd = UX_DEVICE_HCD_GET(hub -> ux_host_class_hub_device); |
105 |
|
|
|
106 |
|
|
/* The HUB is being shut down. */ |
107 |
|
36 |
hub -> ux_host_class_hub_state = UX_HOST_CLASS_INSTANCE_SHUTDOWN; |
108 |
|
|
|
109 |
|
|
/* We need to abort transactions on the interrupt pipe. */ |
110 |
|
|
#if defined(UX_HOST_STANDALONE) |
111 |
|
|
if (hub -> ux_host_class_hub_interrupt_endpoint) |
112 |
|
|
#endif |
113 |
|
|
{ |
114 |
|
36 |
_ux_host_stack_endpoint_transfer_abort(hub -> ux_host_class_hub_interrupt_endpoint); |
115 |
|
|
|
116 |
|
|
/* If the Hub class instance has a interrupt pipe with a data payload associated with it |
117 |
|
|
it must be freed. First get the transfer request. */ |
118 |
|
36 |
transfer_request = &hub -> ux_host_class_hub_interrupt_endpoint -> ux_endpoint_transfer_request; |
119 |
|
|
} |
120 |
|
|
|
121 |
|
|
/* Each device which is downstream on the HUB ports must be removed. */ |
122 |
✓✓ |
108 |
for (port_index = 1; port_index <= hub -> ux_host_class_hub_descriptor.bNbPorts; port_index++) |
123 |
|
|
{ |
124 |
|
|
|
125 |
|
|
/* Is there a device on this port? */ |
126 |
✓✓ |
72 |
if (hub -> ux_host_class_hub_port_state & (1UL << port_index)) |
127 |
|
|
{ |
128 |
|
|
|
129 |
|
|
/* The stack will remove the device and its resources. */ |
130 |
|
12 |
_ux_host_stack_device_remove(hcd, hub -> ux_host_class_hub_device, port_index); |
131 |
|
|
} |
132 |
|
|
} |
133 |
|
|
|
134 |
|
|
|
135 |
|
|
/* The enumeration thread needs to sleep a while to allow the application or the class that may be using |
136 |
|
|
endpoints to exit properly. */ |
137 |
|
36 |
_ux_host_thread_schedule_other(UX_THREAD_PRIORITY_ENUM); |
138 |
|
|
|
139 |
|
|
/* Then de allocate the memory. */ |
140 |
|
|
#if defined(UX_HOST_STANDALONE) |
141 |
|
|
if (transfer_request) |
142 |
|
|
#endif |
143 |
|
36 |
_ux_utility_memory_free(transfer_request -> ux_transfer_request_data_pointer); |
144 |
|
|
|
145 |
|
|
#if defined(UX_HOST_STANDALONE) |
146 |
|
|
if (hub -> ux_host_class_hub_allocated) |
147 |
|
|
{ |
148 |
|
|
_ux_utility_memory_free(hub -> ux_host_class_hub_allocated); |
149 |
|
|
} |
150 |
|
|
#endif |
151 |
|
|
|
152 |
|
|
/* Destroy the instance. */ |
153 |
|
36 |
_ux_host_stack_class_instance_destroy(hub -> ux_host_class_hub_class, (VOID *) hub); |
154 |
|
|
|
155 |
|
|
/* Before we free the device resources, we need to inform the application |
156 |
|
|
that the device is removed. */ |
157 |
✓✓ |
36 |
if (_ux_system_host -> ux_system_host_change_function != UX_NULL) |
158 |
|
|
{ |
159 |
|
|
|
160 |
|
|
/* Inform the application the device is removed. */ |
161 |
|
35 |
_ux_system_host -> ux_system_host_change_function(UX_DEVICE_REMOVAL, hub -> ux_host_class_hub_class, (VOID *) hub); |
162 |
|
|
} |
163 |
|
|
|
164 |
|
|
/* If trace is enabled, insert this event into the trace buffer. */ |
165 |
|
|
UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_HUB_DEACTIVATE, hub, 0, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0) |
166 |
|
|
|
167 |
|
|
/* If trace is enabled, register this object. */ |
168 |
|
|
UX_TRACE_OBJECT_UNREGISTER(hub); |
169 |
|
|
|
170 |
|
|
#if defined(UX_HOST_STANDALONE) |
171 |
|
|
|
172 |
|
|
/* Unlink from device class instance. */ |
173 |
|
|
hub -> ux_host_class_hub_device -> ux_device_class_instance = (VOID *) hub; |
174 |
|
|
#endif |
175 |
|
|
|
176 |
|
|
/* Free the memory block used by the class. */ |
177 |
|
36 |
_ux_utility_memory_free(hub); |
178 |
|
|
|
179 |
|
|
/* Return successful completion. */ |
180 |
|
36 |
return(UX_SUCCESS); |
181 |
|
|
} |