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1// SPDX-License-Identifier: GPL-2.0-only
2//
3// device-attribute-test.c - An application of Kunit to test implementation for device attributes.
4//
5// Copyright (c) 2023 Takashi Sakamoto
6//
7// This file can not be built independently since it is intentionally included in core-device.c.
8
9#include <kunit/test.h>
10
11// Configuration ROM for AV/C Devices 1.0 (Dec. 12, 2000, 1394 Trading Association)
12// Annex C:Configuration ROM example(informative)
13// C.1 Simple AV/C device
14//
15// Copied from the documentation.
16static const u32 simple_avc_config_rom[] = {
17 0x0404eabf,
18 0x31333934,
19 0xe0646102,
20 0xffffffff,
21 0xffffffff,
22 0x00063287, // root directory.
23 0x03ffffff,
24 0x8100000a,
25 0x17ffffff,
26 0x8100000e,
27 0x0c0083c0,
28 0xd1000001,
29 0x0004442d, // unit 0 directory.
30 0x1200a02d,
31 0x13010001,
32 0x17ffffff,
33 0x81000007,
34 0x0005c915, // leaf for textual descriptor.
35 0x00000000,
36 0x00000000,
37 0x56656e64,
38 0x6f72204e,
39 0x616d6500,
40 0x00057f16, // leaf for textual descriptor.
41 0x00000000,
42 0x00000000,
43 0x4d6f6465,
44 0x6c204e61,
45 0x6d650000,
46};
47
48// Ibid.
49// Annex A:Consideration for configuration ROM reader design (informative)
50// A.1 Vendor directory
51//
52// Written by hand.
53static const u32 legacy_avc_config_rom[] = {
54 0x04199fe7,
55 0x31333934,
56 0xe0644000,
57 0x00112233,
58 0x44556677,
59 0x0005dace, // root directory.
60 0x03012345,
61 0x0c0083c0,
62 0x8d000009,
63 0xd1000002,
64 0xc3000004,
65 0x0002e107, // unit 0 directory.
66 0x12abcdef,
67 0x13543210,
68 0x0002cb73, // vendor directory.
69 0x17fedcba,
70 0x81000004,
71 0x00026dc1, // leaf for EUI-64.
72 0x00112233,
73 0x44556677,
74 0x00050e84, // leaf for textual descriptor.
75 0x00000000,
76 0x00000000,
77 0x41424344,
78 0x45464748,
79 0x494a0000,
80};
81
82static void device_attr_simple_avc(struct kunit *test)
83{
84 static const struct fw_device node = {
85 .device = {
86 .type = &fw_device_type,
87 },
88 .config_rom = simple_avc_config_rom,
89 .config_rom_length = sizeof(simple_avc_config_rom),
90 };
91 static const struct fw_unit unit0 = {
92 .device = {
93 .type = &fw_unit_type,
94 .parent = (struct device *)&node.device,
95 },
96 .directory = &simple_avc_config_rom[12],
97 };
98 struct device *node_dev = (struct device *)&node.device;
99 struct device *unit0_dev = (struct device *)&unit0.device;
100 static const int unit0_expected_ids[] = {0x00ffffff, 0x00ffffff, 0x0000a02d, 0x00010001};
101 char *buf = kunit_kzalloc(test, PAGE_SIZE, GFP_KERNEL);
102 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
103 int ids[4] = {0, 0, 0, 0};
104
105 // Ensure associations for node and unit devices.
106
107 KUNIT_ASSERT_TRUE(test, is_fw_device(node_dev));
108 KUNIT_ASSERT_FALSE(test, is_fw_unit(node_dev));
109 KUNIT_ASSERT_PTR_EQ(test, fw_device(node_dev), &node);
110
111 KUNIT_ASSERT_FALSE(test, is_fw_device(unit0_dev));
112 KUNIT_ASSERT_TRUE(test, is_fw_unit(unit0_dev));
113 KUNIT_ASSERT_PTR_EQ(test, fw_parent_device((&unit0)), &node);
114 KUNIT_ASSERT_PTR_EQ(test, fw_unit(unit0_dev), &unit0);
115
116 // For entries in root directory.
117
118 // Vendor immediate entry is found.
119 KUNIT_EXPECT_GT(test, show_immediate(node_dev, &config_rom_attributes[0].attr, buf), 0);
120 KUNIT_EXPECT_STREQ(test, buf, "0xffffff\n");
121
122 // Model immediate entry is found.
123 KUNIT_EXPECT_GT(test, show_immediate(node_dev, &config_rom_attributes[4].attr, buf), 0);
124 KUNIT_EXPECT_STREQ(test, buf, "0xffffff\n");
125
126 // Descriptor leaf entry for vendor is found.
127 KUNIT_EXPECT_GT(test, show_text_leaf(node_dev, &config_rom_attributes[5].attr, buf), 0);
128 KUNIT_EXPECT_STREQ(test, buf, "Vendor Name\n");
129
130 // Descriptor leaf entry for model is found.
131 KUNIT_EXPECT_GT(test, show_text_leaf(node_dev, &config_rom_attributes[6].attr, buf), 0);
132 KUNIT_EXPECT_STREQ(test, buf, "Model Name\n");
133
134 // For entries in unit 0 directory.
135
136 // Vendor immediate entry is not found.
137 KUNIT_EXPECT_LT(test, show_immediate(unit0_dev, &config_rom_attributes[0].attr, buf), 0);
138
139 // Model immediate entry is found.
140 KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[4].attr, buf), 0);
141 KUNIT_EXPECT_STREQ(test, buf, "0xffffff\n");
142
143 // Descriptor leaf entry for vendor is not found.
144 KUNIT_EXPECT_LT(test, show_text_leaf(unit0_dev, &config_rom_attributes[5].attr, buf), 0);
145
146 // Descriptor leaf entry for model is found.
147 KUNIT_EXPECT_GT(test, show_text_leaf(unit0_dev, &config_rom_attributes[6].attr, buf), 0);
148 KUNIT_EXPECT_STREQ(test, buf, "Model Name\n");
149
150 // Specifier_ID immediate entry is found.
151 KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[2].attr, buf), 0);
152 KUNIT_EXPECT_STREQ(test, buf, "0x00a02d\n");
153
154 // Version immediate entry is found.
155 KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[3].attr, buf), 0);
156 KUNIT_EXPECT_STREQ(test, buf, "0x010001\n");
157
158 kunit_kfree(test, buf);
159
160 get_modalias_ids(&unit0, ids);
161 KUNIT_EXPECT_MEMEQ(test, ids, unit0_expected_ids, sizeof(ids));
162}
163
164static void device_attr_legacy_avc(struct kunit *test)
165{
166 static const struct fw_device node = {
167 .device = {
168 .type = &fw_device_type,
169 },
170 .config_rom = legacy_avc_config_rom,
171 .config_rom_length = sizeof(legacy_avc_config_rom),
172 };
173 static const struct fw_unit unit0 = {
174 .device = {
175 .type = &fw_unit_type,
176 .parent = (struct device *)&node.device,
177 },
178 .directory = &legacy_avc_config_rom[11],
179 };
180 struct device *node_dev = (struct device *)&node.device;
181 struct device *unit0_dev = (struct device *)&unit0.device;
182 static const int unit0_expected_ids[] = {0x00012345, 0x00fedcba, 0x00abcdef, 0x00543210};
183 char *buf = kunit_kzalloc(test, PAGE_SIZE, GFP_KERNEL);
184 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
185 int ids[4] = {0, 0, 0, 0};
186
187 // Ensure associations for node and unit devices.
188
189 KUNIT_ASSERT_TRUE(test, is_fw_device(node_dev));
190 KUNIT_ASSERT_FALSE(test, is_fw_unit(node_dev));
191 KUNIT_ASSERT_PTR_EQ(test, fw_device((node_dev)), &node);
192
193 KUNIT_ASSERT_FALSE(test, is_fw_device(unit0_dev));
194 KUNIT_ASSERT_TRUE(test, is_fw_unit(unit0_dev));
195 KUNIT_ASSERT_PTR_EQ(test, fw_parent_device((&unit0)), &node);
196 KUNIT_ASSERT_PTR_EQ(test, fw_unit(unit0_dev), &unit0);
197
198 // For entries in root directory.
199
200 // Vendor immediate entry is found.
201 KUNIT_EXPECT_GT(test, show_immediate(node_dev, &config_rom_attributes[0].attr, buf), 0);
202 KUNIT_EXPECT_STREQ(test, buf, "0x012345\n");
203
204 // Model immediate entry is found.
205 KUNIT_EXPECT_GT(test, show_immediate(node_dev, &config_rom_attributes[4].attr, buf), 0);
206 KUNIT_EXPECT_STREQ(test, buf, "0xfedcba\n");
207
208 // Descriptor leaf entry for vendor is not found.
209 KUNIT_EXPECT_LT(test, show_text_leaf(node_dev, &config_rom_attributes[5].attr, buf), 0);
210
211 // Descriptor leaf entry for model is found.
212 KUNIT_EXPECT_GT(test, show_text_leaf(node_dev, &config_rom_attributes[6].attr, buf), 0);
213 KUNIT_EXPECT_STREQ(test, buf, "ABCDEFGHIJ\n");
214
215 // For entries in unit 0 directory.
216
217 // Vendor immediate entry is not found.
218 KUNIT_EXPECT_LT(test, show_immediate(unit0_dev, &config_rom_attributes[0].attr, buf), 0);
219
220 // Model immediate entry is not found.
221 KUNIT_EXPECT_LT(test, show_immediate(unit0_dev, &config_rom_attributes[4].attr, buf), 0);
222
223 // Descriptor leaf entry for vendor is not found.
224 KUNIT_EXPECT_LT(test, show_text_leaf(unit0_dev, &config_rom_attributes[5].attr, buf), 0);
225
226 // Descriptor leaf entry for model is not found.
227 KUNIT_EXPECT_LT(test, show_text_leaf(unit0_dev, &config_rom_attributes[6].attr, buf), 0);
228
229 // Specifier_ID immediate entry is found.
230 KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[2].attr, buf), 0);
231 KUNIT_EXPECT_STREQ(test, buf, "0xabcdef\n");
232
233 // Version immediate entry is found.
234 KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[3].attr, buf), 0);
235 KUNIT_EXPECT_STREQ(test, buf, "0x543210\n");
236
237 kunit_kfree(test, buf);
238
239 get_modalias_ids(&unit0, ids);
240 KUNIT_EXPECT_MEMEQ(test, ids, unit0_expected_ids, sizeof(ids));
241}
242
243static struct kunit_case device_attr_test_cases[] = {
244 KUNIT_CASE(device_attr_simple_avc),
245 KUNIT_CASE(device_attr_legacy_avc),
246 {}
247};
248
249static struct kunit_suite device_attr_test_suite = {
250 .name = "firewire-device-attribute",
251 .test_cases = device_attr_test_cases,
252};
253kunit_test_suite(device_attr_test_suite);