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 |
|
|
/** Host Stack */ |
19 |
|
|
/** */ |
20 |
|
|
/**************************************************************************/ |
21 |
|
|
/**************************************************************************/ |
22 |
|
|
|
23 |
|
|
|
24 |
|
|
/* Include necessary system files. */ |
25 |
|
|
|
26 |
|
|
#define UX_SOURCE_CODE |
27 |
|
|
|
28 |
|
|
#include "ux_api.h" |
29 |
|
|
#include "ux_host_stack.h" |
30 |
|
|
|
31 |
|
|
|
32 |
|
|
#if !defined(UX_HOST_STACK_DEVICE_DRIVER_SCAN_DISABLE) |
33 |
|
|
#if defined(UX_HOST_STACK_DEVICE_DRIVER_SCAN_VIDPID_DISABLE) && \ |
34 |
|
|
defined(UX_HOST_STACK_DEVICE_DRIVER_SCAN_DCSP_DISABLE) |
35 |
|
|
#error When device driver scan is enabled at least one of scan method must be enabled in (VIDPID, DeviceClassSubclassProtocol) |
36 |
|
|
#endif |
37 |
|
|
#endif |
38 |
|
|
|
39 |
|
|
/**************************************************************************/ |
40 |
|
|
/* */ |
41 |
|
|
/* FUNCTION RELEASE */ |
42 |
|
|
/* */ |
43 |
|
|
/* _ux_host_stack_class_device_scan PORTABLE C */ |
44 |
|
|
/* 6.1.10 */ |
45 |
|
|
/* AUTHOR */ |
46 |
|
|
/* */ |
47 |
|
|
/* Chaoqiong Xiao, Microsoft Corporation */ |
48 |
|
|
/* */ |
49 |
|
|
/* DESCRIPTION */ |
50 |
|
|
/* */ |
51 |
|
|
/* This function will scan all registered classes with a device */ |
52 |
|
|
/* candidate. Priority is given to the PID/VID and then the */ |
53 |
|
|
/* Class/Subclass/Protocol. */ |
54 |
|
|
/* */ |
55 |
|
|
/* INPUT */ |
56 |
|
|
/* */ |
57 |
|
|
/* device Pointer to device */ |
58 |
|
|
/* */ |
59 |
|
|
/* OUTPUT */ |
60 |
|
|
/* */ |
61 |
|
|
/* Completion Status */ |
62 |
|
|
/* */ |
63 |
|
|
/* CALLS */ |
64 |
|
|
/* */ |
65 |
|
|
/* _ux_host_stack_class_call Call host stack class */ |
66 |
|
|
/* (ux_host_class_entry_function) Class entry function */ |
67 |
|
|
/* */ |
68 |
|
|
/* CALLED BY */ |
69 |
|
|
/* */ |
70 |
|
|
/* USBX Components */ |
71 |
|
|
/* */ |
72 |
|
|
/**************************************************************************/ |
73 |
|
927 |
UINT _ux_host_stack_class_device_scan(UX_DEVICE *device) |
74 |
|
|
{ |
75 |
|
|
#if !defined(UX_HOST_STACK_DEVICE_DRIVER_SCAN_DISABLE) |
76 |
|
|
|
77 |
|
|
UINT status; |
78 |
|
927 |
UX_HOST_CLASS *class_inst = UX_NULL; |
79 |
|
|
UX_HOST_CLASS_COMMAND class_command; |
80 |
|
|
|
81 |
|
|
/* Perform the command initialization. */ |
82 |
|
927 |
class_command.ux_host_class_command_request = UX_HOST_CLASS_COMMAND_QUERY; |
83 |
|
927 |
class_command.ux_host_class_command_container = (VOID *) device; |
84 |
|
927 |
class_command.ux_host_class_command_vid = device -> ux_device_descriptor.idVendor; |
85 |
|
927 |
class_command.ux_host_class_command_pid = device -> ux_device_descriptor.idProduct; |
86 |
|
927 |
class_command.ux_host_class_command_class = device -> ux_device_descriptor.bDeviceClass; |
87 |
|
927 |
class_command.ux_host_class_command_subclass = device -> ux_device_descriptor.bDeviceSubClass; |
88 |
|
927 |
class_command.ux_host_class_command_protocol = device -> ux_device_descriptor.bDeviceProtocol; |
89 |
|
927 |
class_command.ux_host_class_command_iad_class = 0; |
90 |
|
927 |
class_command.ux_host_class_command_iad_subclass = 0; |
91 |
|
927 |
class_command.ux_host_class_command_iad_protocol = 0; |
92 |
|
|
|
93 |
|
|
#if !defined(UX_HOST_STACK_DEVICE_DRIVER_SCAN_VIDPID_DISABLE) |
94 |
|
|
/* We start with the PID/VID for this device. */ |
95 |
|
927 |
class_command.ux_host_class_command_usage = UX_HOST_CLASS_COMMAND_USAGE_PIDVID; |
96 |
|
927 |
class_inst = _ux_host_stack_class_call(&class_command); |
97 |
|
|
#endif |
98 |
|
|
|
99 |
|
|
#if !defined(UX_HOST_STACK_DEVICE_DRIVER_SCAN_DCSP_DISABLE) |
100 |
|
|
/* On return, either we have found a class or the device is still an orphan. */ |
101 |
✓✓ |
927 |
if (class_inst == UX_NULL) |
102 |
|
|
{ |
103 |
|
|
|
104 |
|
|
/* It the PID/VID did not work, we continue looking for the Class\Subclass\Protocol match. */ |
105 |
|
912 |
class_command.ux_host_class_command_usage = UX_HOST_CLASS_COMMAND_USAGE_DCSP; |
106 |
|
912 |
class_inst = _ux_host_stack_class_call(&class_command); |
107 |
|
|
|
108 |
|
|
} |
109 |
|
|
#endif |
110 |
|
|
|
111 |
|
|
/* On return, either we have found a class or the device is still an orphan. */ |
112 |
✓✓ |
927 |
if (class_inst != UX_NULL) |
113 |
|
|
{ |
114 |
|
|
|
115 |
|
87 |
device -> ux_device_class = class_inst; |
116 |
|
|
|
117 |
|
|
#if defined(UX_HOST_STANDALONE) |
118 |
|
|
|
119 |
|
|
/* Activation may take time, run as state machine. */ |
120 |
|
|
status = UX_SUCCESS; |
121 |
|
|
return(status); |
122 |
|
|
#else |
123 |
|
87 |
class_command.ux_host_class_command_class_ptr = class_inst; |
124 |
|
87 |
class_command.ux_host_class_command_request = UX_HOST_CLASS_COMMAND_ACTIVATE; |
125 |
|
87 |
status = device -> ux_device_class -> ux_host_class_entry_function(&class_command); |
126 |
|
|
|
127 |
|
|
/* Return result of activation. */ |
128 |
|
87 |
return(status); |
129 |
|
|
#endif |
130 |
|
|
} |
131 |
|
|
|
132 |
|
|
#endif |
133 |
|
|
|
134 |
|
|
/* Return an error. */ |
135 |
|
840 |
return(UX_NO_CLASS_MATCH); |
136 |
|
|
} |
137 |
|
|
|