1 // SPDX-License-Identifier: GPL-2.0-only
3 // device-attribute-test.c - An application of Kunit to test implementation for device attributes.
5 // Copyright (c) 2023 Takashi Sakamoto
7 // This file can not be built independently since it is intentionally included in core-device.c.
9 #include <kunit/test.h>
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
15 // Copied from the documentation.
16 static const u32 simple_avc_config_rom[] = {
22 0x00063287, // root directory.
29 0x0004442d, // unit 0 directory.
34 0x0005c915, // leaf for textual descriptor.
40 0x00057f16, // leaf for textual descriptor.
49 // Annex A:Consideration for configuration ROM reader design (informative)
50 // A.1 Vendor directory
53 static const u32 legacy_avc_config_rom[] = {
59 0x0005dace, // root directory.
65 0x0002e107, // unit 0 directory.
68 0x0002cb73, // vendor directory.
71 0x00026dc1, // leaf for EUI-64.
74 0x00050e84, // leaf for textual descriptor.
82 static void device_attr_simple_avc(struct kunit *test)
84 static const struct fw_device node = {
86 .type = &fw_device_type,
88 .config_rom = simple_avc_config_rom,
89 .config_rom_length = sizeof(simple_avc_config_rom),
91 static const struct fw_unit unit0 = {
93 .type = &fw_unit_type,
94 .parent = (struct device *)&node.device,
96 .directory = &simple_avc_config_rom[12],
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 int ids[4] = {0, 0, 0, 0};
104 // Ensure associations for node and unit devices.
106 KUNIT_ASSERT_TRUE(test, is_fw_device(node_dev));
107 KUNIT_ASSERT_FALSE(test, is_fw_unit(node_dev));
108 KUNIT_ASSERT_PTR_EQ(test, fw_device(node_dev), &node);
110 KUNIT_ASSERT_FALSE(test, is_fw_device(unit0_dev));
111 KUNIT_ASSERT_TRUE(test, is_fw_unit(unit0_dev));
112 KUNIT_ASSERT_PTR_EQ(test, fw_parent_device((&unit0)), &node);
113 KUNIT_ASSERT_PTR_EQ(test, fw_unit(unit0_dev), &unit0);
115 // For entries in root directory.
117 // Vendor immediate entry is found.
118 KUNIT_EXPECT_GT(test, show_immediate(node_dev, &config_rom_attributes[0].attr, buf), 0);
119 KUNIT_EXPECT_STREQ(test, buf, "0xffffff\n");
121 // Model immediate entry is found.
122 KUNIT_EXPECT_GT(test, show_immediate(node_dev, &config_rom_attributes[4].attr, buf), 0);
123 KUNIT_EXPECT_STREQ(test, buf, "0xffffff\n");
125 // Descriptor leaf entry for vendor is found.
126 KUNIT_EXPECT_GT(test, show_text_leaf(node_dev, &config_rom_attributes[5].attr, buf), 0);
127 KUNIT_EXPECT_STREQ(test, buf, "Vendor Name\n");
129 // Descriptor leaf entry for model is found.
130 KUNIT_EXPECT_GT(test, show_text_leaf(node_dev, &config_rom_attributes[6].attr, buf), 0);
131 KUNIT_EXPECT_STREQ(test, buf, "Model Name\n");
133 // For entries in unit 0 directory.
135 // Vendor immediate entry is not found.
136 KUNIT_EXPECT_LT(test, show_immediate(unit0_dev, &config_rom_attributes[0].attr, buf), 0);
138 // Model immediate entry is found.
139 KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[4].attr, buf), 0);
140 KUNIT_EXPECT_STREQ(test, buf, "0xffffff\n");
142 // Descriptor leaf entry for vendor is not found.
143 KUNIT_EXPECT_LT(test, show_text_leaf(unit0_dev, &config_rom_attributes[5].attr, buf), 0);
145 // Descriptor leaf entry for model is found.
146 KUNIT_EXPECT_GT(test, show_text_leaf(unit0_dev, &config_rom_attributes[6].attr, buf), 0);
147 KUNIT_EXPECT_STREQ(test, buf, "Model Name\n");
149 // Specifier_ID immediate entry is found.
150 KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[2].attr, buf), 0);
151 KUNIT_EXPECT_STREQ(test, buf, "0x00a02d\n");
153 // Version immediate entry is found.
154 KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[3].attr, buf), 0);
155 KUNIT_EXPECT_STREQ(test, buf, "0x010001\n");
157 kunit_kfree(test, buf);
159 get_modalias_ids(&unit0, ids);
160 KUNIT_EXPECT_MEMEQ(test, ids, unit0_expected_ids, sizeof(ids));
163 static void device_attr_legacy_avc(struct kunit *test)
165 static const struct fw_device node = {
167 .type = &fw_device_type,
169 .config_rom = legacy_avc_config_rom,
170 .config_rom_length = sizeof(legacy_avc_config_rom),
172 static const struct fw_unit unit0 = {
174 .type = &fw_unit_type,
175 .parent = (struct device *)&node.device,
177 .directory = &legacy_avc_config_rom[11],
179 struct device *node_dev = (struct device *)&node.device;
180 struct device *unit0_dev = (struct device *)&unit0.device;
181 static const int unit0_expected_ids[] = {0x00012345, 0x00fedcba, 0x00abcdef, 0x00543210};
182 char *buf = kunit_kzalloc(test, PAGE_SIZE, GFP_KERNEL);
183 int ids[4] = {0, 0, 0, 0};
185 // Ensure associations for node and unit devices.
187 KUNIT_ASSERT_TRUE(test, is_fw_device(node_dev));
188 KUNIT_ASSERT_FALSE(test, is_fw_unit(node_dev));
189 KUNIT_ASSERT_PTR_EQ(test, fw_device((node_dev)), &node);
191 KUNIT_ASSERT_FALSE(test, is_fw_device(unit0_dev));
192 KUNIT_ASSERT_TRUE(test, is_fw_unit(unit0_dev));
193 KUNIT_ASSERT_PTR_EQ(test, fw_parent_device((&unit0)), &node);
194 KUNIT_ASSERT_PTR_EQ(test, fw_unit(unit0_dev), &unit0);
196 // For entries in root directory.
198 // Vendor immediate entry is found.
199 KUNIT_EXPECT_GT(test, show_immediate(node_dev, &config_rom_attributes[0].attr, buf), 0);
200 KUNIT_EXPECT_STREQ(test, buf, "0x012345\n");
202 // Model immediate entry is found.
203 KUNIT_EXPECT_GT(test, show_immediate(node_dev, &config_rom_attributes[4].attr, buf), 0);
204 KUNIT_EXPECT_STREQ(test, buf, "0xfedcba\n");
206 // Descriptor leaf entry for vendor is not found.
207 KUNIT_EXPECT_LT(test, show_text_leaf(node_dev, &config_rom_attributes[5].attr, buf), 0);
209 // Descriptor leaf entry for model is found.
210 KUNIT_EXPECT_GT(test, show_text_leaf(node_dev, &config_rom_attributes[6].attr, buf), 0);
211 KUNIT_EXPECT_STREQ(test, buf, "ABCDEFGHIJ\n");
213 // For entries in unit 0 directory.
215 // Vendor immediate entry is not found.
216 KUNIT_EXPECT_LT(test, show_immediate(unit0_dev, &config_rom_attributes[0].attr, buf), 0);
218 // Model immediate entry is not found.
219 KUNIT_EXPECT_LT(test, show_immediate(unit0_dev, &config_rom_attributes[4].attr, buf), 0);
221 // Descriptor leaf entry for vendor is not found.
222 KUNIT_EXPECT_LT(test, show_text_leaf(unit0_dev, &config_rom_attributes[5].attr, buf), 0);
224 // Descriptor leaf entry for model is not found.
225 KUNIT_EXPECT_LT(test, show_text_leaf(unit0_dev, &config_rom_attributes[6].attr, buf), 0);
227 // Specifier_ID immediate entry is found.
228 KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[2].attr, buf), 0);
229 KUNIT_EXPECT_STREQ(test, buf, "0xabcdef\n");
231 // Version immediate entry is found.
232 KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[3].attr, buf), 0);
233 KUNIT_EXPECT_STREQ(test, buf, "0x543210\n");
235 kunit_kfree(test, buf);
237 get_modalias_ids(&unit0, ids);
238 KUNIT_EXPECT_MEMEQ(test, ids, unit0_expected_ids, sizeof(ids));
241 static struct kunit_case device_attr_test_cases[] = {
242 KUNIT_CASE(device_attr_simple_avc),
243 KUNIT_CASE(device_attr_legacy_avc),
247 static struct kunit_suite device_attr_test_suite = {
248 .name = "firewire-device-attribute",
249 .test_cases = device_attr_test_cases,
251 kunit_test_suite(device_attr_test_suite);