1 /**************************************************************************/
2 /* */
3 /* Copyright (c) Microsoft Corporation. All rights reserved. */
4 /* */
5 /* This software is licensed under the Microsoft Software License */
6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */
7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
8 /* and in the root directory of this software. */
9 /* */
10 /**************************************************************************/
11
12
13 /**************************************************************************/
14 /**************************************************************************/
15 /** */
16 /** USBX Component */
17 /** */
18 /** Device Storage Class */
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_class_storage.h"
30 #include "ux_device_stack.h"
31
32
33 /**************************************************************************/
34 /* */
35 /* FUNCTION RELEASE */
36 /* */
37 /* _ux_device_class_storage_activate PORTABLE C */
38 /* 6.1.12 */
39 /* AUTHOR */
40 /* */
41 /* Chaoqiong Xiao, Microsoft Corporation */
42 /* */
43 /* DESCRIPTION */
44 /* */
45 /* This function activates the USB storage device. */
46 /* */
47 /* INPUT */
48 /* */
49 /* command Pointer to storage command */
50 /* */
51 /* OUTPUT */
52 /* */
53 /* Completion Status */
54 /* */
55 /* CALLS */
56 /* */
57 /* _ux_device_thread_resume Resume thread */
58 /* */
59 /* CALLED BY */
60 /* */
61 /* Device Storage Class */
62 /* */
63 /* RELEASE HISTORY */
64 /* */
65 /* DATE NAME DESCRIPTION */
66 /* */
67 /* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
68 /* 09-30-2020 Chaoqiong Xiao Modified comment(s), */
69 /* resulting in version 6.1 */
70 /* 01-31-2022 Chaoqiong Xiao Modified comment(s), */
71 /* added standalone support, */
72 /* resulting in version 6.1.10 */
73 /* 07-29-2022 Chaoqiong Xiao Modified comment(s), */
74 /* fixed parameter/variable */
75 /* names conflict C++ keyword, */
76 /* resulting in version 6.1.12 */
77 /* */
78 /**************************************************************************/
_ux_device_class_storage_activate(UX_SLAVE_CLASS_COMMAND * command)79 UINT _ux_device_class_storage_activate(UX_SLAVE_CLASS_COMMAND *command)
80 {
81
82 UINT status = UX_SUCCESS;
83 UX_SLAVE_INTERFACE *interface_ptr;
84 UX_SLAVE_CLASS *class_ptr;
85 UX_SLAVE_CLASS_STORAGE *storage;
86 #if defined(UX_DEVICE_STANDALONE)
87 UX_SLAVE_ENDPOINT *endpoint;
88 #endif
89
90
91 /* Get the class container. */
92 class_ptr = command -> ux_slave_class_command_class_ptr;
93
94 /* Get the class instance in the container. */
95 storage = (UX_SLAVE_CLASS_STORAGE *)class_ptr -> ux_slave_class_instance;
96
97 /* Get the interface that owns this instance. */
98 interface_ptr = (UX_SLAVE_INTERFACE *) command -> ux_slave_class_command_interface;
99
100 /* Store the class instance into the interface. */
101 interface_ptr -> ux_slave_interface_class_instance = (VOID *)storage;
102
103 /* Now the opposite, store the interface in the class instance. */
104 storage -> ux_slave_class_storage_interface = interface_ptr;
105
106 #if !defined(UX_DEVICE_STANDALONE)
107
108 /* Resume thread. */
109 _ux_device_thread_resume(&class_ptr -> ux_slave_class_thread);
110
111 #else
112
113 /* Locate the endpoints. */
114 /* Check the first endpoint direction, if IN we have the correct endpoint. */
115 endpoint = interface_ptr -> ux_slave_interface_first_endpoint;
116 if ((endpoint -> ux_slave_endpoint_descriptor.bEndpointAddress & UX_ENDPOINT_DIRECTION) != UX_ENDPOINT_IN)
117 {
118
119 /* Wrong direction, we found the OUT endpoint first. */
120 storage -> ux_device_class_storage_ep_out = endpoint;
121
122 /* So the next endpoint has to be the IN endpoint. */
123 storage -> ux_device_class_storage_ep_in = endpoint -> ux_slave_endpoint_next_endpoint;
124 }
125 else
126 {
127
128 /* We found the IN endpoint first. */
129 storage -> ux_device_class_storage_ep_in = endpoint;
130
131 /* So the next endpoint has to be the OUT endpoint. */
132 storage -> ux_device_class_storage_ep_out = endpoint -> ux_slave_endpoint_next_endpoint;
133 }
134
135 /* Reset states. */
136 storage -> ux_device_class_storage_buffer[0] = storage -> ux_device_class_storage_ep_out ->
137 ux_slave_endpoint_transfer_request.ux_slave_transfer_request_data_pointer;
138 storage -> ux_device_class_storage_buffer[1] = storage -> ux_device_class_storage_ep_in ->
139 ux_slave_endpoint_transfer_request.ux_slave_transfer_request_data_pointer;
140 storage -> ux_device_class_storage_data_buffer = UX_NULL;
141 storage -> ux_device_class_storage_state = UX_STATE_RESET;
142 storage -> ux_device_class_storage_disk_state = UX_DEVICE_CLASS_STORAGE_DISK_IDLE;
143 storage -> ux_device_class_storage_buffer_state[0] = UX_DEVICE_CLASS_STORAGE_BUFFER_IDLE;
144 storage -> ux_device_class_storage_buffer_state[1] = UX_DEVICE_CLASS_STORAGE_BUFFER_IDLE;
145 storage -> ux_device_class_storage_buffer_usb = 0;
146 storage -> ux_device_class_storage_buffer_disk = 0;
147 UX_SLAVE_TRANSFER_STATE_RESET(&storage -> ux_device_class_storage_ep_out -> ux_slave_endpoint_transfer_request);
148 UX_SLAVE_TRANSFER_STATE_RESET(&storage -> ux_device_class_storage_ep_in -> ux_slave_endpoint_transfer_request);
149
150 status = UX_SUCCESS;
151 #endif
152
153 /* If there is a activate function call it. */
154 if (storage -> ux_slave_class_storage_instance_activate != UX_NULL)
155 {
156 /* Invoke the application. */
157 storage -> ux_slave_class_storage_instance_activate(storage);
158 }
159
160 /* If trace is enabled, insert this event into the trace buffer. */
161 UX_TRACE_IN_LINE_INSERT(UX_TRACE_DEVICE_CLASS_STORAGE_ACTIVATE, storage, 0, 0, 0, UX_TRACE_DEVICE_CLASS_EVENTS, 0, 0)
162
163 /* If trace is enabled, register this object. */
164 UX_TRACE_OBJECT_REGISTER(UX_TRACE_DEVICE_OBJECT_TYPE_INTERFACE, storage, 0, 0, 0)
165
166 /* Return completion status. */
167 return(status);
168 }
169
170
