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
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
|
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/manual.js"></script>
</head>
<body>
<p>
These tests require a USB device to be connected.
</p>
<script>
const kGetDescriptorRequest = 0x06;
const kDeviceDescriptorType = 0x01;
const kDeviceDescriptorLength = 18;
const kConfigurationDescriptorType = 0x02;
const kConfigurationDescriptorLength = 9;
const kStringDescriptorType = 0x03;
const kStringDescriptorMaxLength = 0xFF;
const kInterfaceDescriptorType = 0x04;
const kInterfaceDescriptorLength = 9;
const kEndpointDescriptorType = 0x05;
const kEndpointDescriptorLength = 7;
let device = null;
let pending_subtests = 0;
const string_tests = new Set();
const string_languages = [];
async function subtest_complete() {
if (--pending_subtests == 0) {
await device.close();
}
}
function manual_usb_subtest(func, name, properties) {
pending_subtests++;
promise_test(async (test) => {
test.add_cleanup(subtest_complete);
await func(test);
}, name, properties);
}
function read_string(index, expected) {
// A device may use the same string in multiple places. Don't bother
// repeating the test.
if (string_tests.has(index)) {
return;
}
string_tests.add(index);
const string_values = new Set();
const decoder = new TextDecoder('utf-16le');
for (const language of string_languages) {
const language_string = language.toString(16).padStart(4, '0');
manual_usb_subtest(async (t) => {
if (expected != undefined) {
t.add_cleanup(() => {
if (string_values.size == string_languages.length) {
assert_true(string_values.has(expected));
}
});
}
const result = await device.controlTransferIn({
requestType: 'standard',
recipient: 'device',
request: kGetDescriptorRequest,
value: kStringDescriptorType << 8 | index,
index: language
}, kStringDescriptorMaxLength);
assert_equals(result.status, 'ok', 'transfer status');
const length = result.data.getUint8(0);
assert_greater_than_equal(length, 2, 'descriptor length');
assert_equals(result.data.byteLength, length, 'transfer length');
assert_equals(result.data.getUint8(1), kStringDescriptorType,
'descriptor type');
const string_buffer = new Uint8Array(
result.data.buffer, result.data.byteOffset + 2, length - 2);
string_values.add(decoder.decode(string_buffer));
},
`Read string descriptor ${index} in language 0x${language_string}`);
}
}
function check_interface_descriptor(configuration, data) {
assert_greater_than_equal(
data.getUint8(0), kInterfaceDescriptorLength, 'descriptor length');
const interface_number = data.getUint8(2);
const iface = configuration.interfaces.find((iface) => {
return iface.interfaceNumber == interface_number;
});
assert_not_equals(
iface, undefined, `unknown interface ${interface_number}`);
const alternate_setting = data.getUint8(3);
const alternate = iface.alternates.find((alternate) => {
return alternate.alternateSetting == alternate_setting;
});
assert_not_equals(
alternate, undefined, `unknown alternate ${alternate_setting}`);
assert_equals(data.getUint8(4), alternate.endpoints.length,
'number of endpoints');
assert_equals(
data.getUint8(5), alternate.interfaceClass, 'interface class');
assert_equals(data.getUint8(6), alternate.interfaceSubclass,
'interface subclass');
assert_equals(data.getUint8(7), alternate.interfaceProtocol,
'interface protocol');
const interface_string = data.getUint8(8);
if (interface_string != 0) {
// TODO(crbug.com/727819): Check that the string descriptor matches
// iface.interfaceName.
read_string(interface_string);
}
return alternate;
}
function check_endpoint_descriptor(alternate, data) {
assert_greater_than_equal(
data.getUint8(0), kEndpointDescriptorLength, 'descriptor length');
const endpoint_address = data.getUint8(2);
const direction = endpoint_address & 0x80 ? 'in' : 'out';
const endpoint_number = endpoint_address & 0x0f;
const endpoint = alternate.endpoints.find((endpoint) => {
return endpoint.direction == direction &&
endpoint.endpointNumber == endpoint_number;
});
assert_not_equals(
endpoint, undefined, `unknown endpoint ${endpoint_number}`);
const attributes = data.getUint8(3);
switch (attributes & 0x03) {
case 0:
assert_equals(endpoint.type, 'control', 'endpoint type');
break;
case 1:
assert_equals(endpoint.type, 'isochronous', 'endpoint type');
break;
case 2:
assert_equals(endpoint.type, 'bulk', 'endpoint type');
break;
case 3:
assert_equals(endpoint.type, 'interrupt', 'endpoint type');
break;
}
assert_equals(data.getUint16(4, /*littleEndian=*/true),
endpoint.packetSize, 'packet size');
}
function read_config_descriptor(config_value) {
manual_usb_subtest(async (t) => {
const configuration = device.configurations.find((config) => {
return config.configurationValue == config_value;
});
assert_not_equals(configuration, undefined);
let result = await device.controlTransferIn({
requestType: 'standard',
recipient: 'device',
request: kGetDescriptorRequest,
value: kConfigurationDescriptorType << 8 | (config_value - 1),
index: 0
}, kConfigurationDescriptorLength);
assert_equals(result.status, 'ok', 'transfer status');
let length = result.data.getUint8(0);
assert_greater_than_equal(
length, kConfigurationDescriptorLength, 'descriptor length');
assert_equals(result.data.byteLength, length, 'transfer length');
const total_length = result.data.getUint16(2, /*littleEndian=*/true);
result = await device.controlTransferIn({
requestType: 'standard',
recipient: 'device',
request: kGetDescriptorRequest,
value: kConfigurationDescriptorType << 8 | (config_value - 1),
index: 0
}, total_length);
assert_equals(result.status, 'ok', 'transfer status');
assert_equals(
result.data.byteLength, total_length, 'transfer length');
assert_equals(result.data.getUint8(0), length, 'descriptor length');
assert_equals(result.data.getUint8(1), kConfigurationDescriptorType,
'descriptor type');
assert_equals(result.data.getUint16(2, /*littleEndian=*/true),
total_length, 'total length');
assert_equals(
result.data.getUint8(4), configuration.interfaces.length,
'number of interfaces');
assert_equals(
result.data.getUint8(5), config_value, 'configuration value');
const configuration_string = result.data.getUint8(6);
if (configuration_string != 0) {
// TODO(crbug.com/727819): Check that the string descriptor matches
// configuration.configurationName.
read_string(configuration_string);
}
let offset = length;
let alternate = undefined;
while (offset < total_length) {
length = result.data.getUint8(offset);
assert_less_than_equal(offset + length, total_length);
const view = new DataView(
result.data.buffer, result.data.byteOffset + offset, length);
switch (view.getUint8(1)) {
case kConfigurationDescriptorType:
assert_unreached('cannot contain multiple config descriptors');
break;
case kInterfaceDescriptorType:
alternate = check_interface_descriptor(configuration, view);
break;
case kEndpointDescriptorType:
assert_not_equals(alternate, undefined,
'endpoint not defined after interface');
check_endpoint_descriptor(alternate, view);
break;
}
offset += length;
}
}, `Read config descriptor ${config_value}`);
}
function read_string_descriptor_languages(device_descriptor) {
manual_usb_subtest(async (t) => {
const result = await device.controlTransferIn({
requestType: 'standard',
recipient: 'device',
request: kGetDescriptorRequest,
value: kStringDescriptorType << 8,
index: 0
}, kStringDescriptorMaxLength);
assert_equals(result.status, 'ok', 'transfer status');
assert_equals(result.data.getUint8(1), kStringDescriptorType,
'descriptor type');
const length = result.data.getUint8(0);
assert_greater_than_equal(length, 2, 'descriptor length')
assert_greater_than_equal(
result.data.byteLength, length, 'transfer length');
for (let index = 2; index < length; index += 2) {
string_languages.push(
result.data.getUint16(index, /*littleEndian=*/true));
}
const manufacturer_string = device_descriptor.getUint8(14);
if (manufacturer_string != 0) {
assert_not_equals(device.manufacturerName, undefined);
read_string(manufacturer_string, device.manufacturerName);
}
const product_string = device_descriptor.getUint8(15);
if (product_string != 0) {
assert_not_equals(device.productName, undefined);
read_string(product_string, device.productName);
}
const serial_number_string = device_descriptor.getUint8(16);
if (serial_number_string != 0) {
assert_not_equals(device.serialNumber, undefined);
read_string(serial_number_string, device.serialNumber);
}
const num_configurations = device_descriptor.getUint8(17);
for (let config_value = 1; config_value <= num_configurations;
++config_value) {
read_config_descriptor(config_value);
}
}, `Read supported languages`);
}
promise_test(async (t) => {
device = await getDeviceForManualTest();
await device.open();
const result = await device.controlTransferIn({
requestType: 'standard',
recipient: 'device',
request: kGetDescriptorRequest,
value: kDeviceDescriptorType << 8,
index: 0,
}, kDeviceDescriptorLength);
assert_equals(result.status, 'ok', 'transfer status');
assert_equals(
result.data.byteLength, kDeviceDescriptorLength, 'transfer length');
assert_greater_than_equal(
result.data.getUint8(0),
kDeviceDescriptorLength, 'descriptor length');
assert_equals(result.data.getUint8(1), kDeviceDescriptorType,
'descriptor type');
const bcd_usb = result.data.getUint16(2, /*littleEndian=*/true);
assert_equals(
bcd_usb >> 8, device.usbVersionMajor, 'USB version major');
assert_equals(
(bcd_usb & 0xf0) >> 4, device.usbVersionMinor, 'USB version minor');
assert_equals(
bcd_usb & 0xf, device.usbVersionSubminor, 'USV version subminor');
assert_equals(
result.data.getUint8(4), device.deviceClass, 'device class');
assert_equals(
result.data.getUint8(5), device.deviceSubclass, 'device subclass');
assert_equals(
result.data.getUint8(6), device.deviceProtocol, 'device protocol');
assert_equals(result.data.getUint16(8, /*littleEndian=*/true),
device.vendorId, 'vendor id');
assert_equals(result.data.getUint16(10, /*littleEndian=*/true),
device.productId, 'product id');
const bcd_device = result.data.getUint16(12, /*littleEndian=*/true);
assert_equals(
bcd_device >> 8, device.deviceVersionMajor, 'device version major');
assert_equals((bcd_device & 0xf0) >> 4, device.deviceVersionMinor,
'device version minor');
assert_equals(bcd_device & 0xf, device.deviceVersionSubminor,
'device version subminor');
assert_equals(result.data.getUint8(17), device.configurations.length,
'number of configurations');
read_string_descriptor_languages(result.data);
if (pending_subtests == 0) {
await device.close();
}
}, 'Read device descriptor');
</script>
</body>
</html>
|
