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 int ids[4] = {0, 0, 0, 0}; 103 104 // Ensure associations for node and unit devices. 105 106 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); 109 110 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); 114 115 // For entries in root directory. 116 117 // 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"); 120 121 // 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"); 124 125 // 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"); 128 129 // 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"); 132 133 // For entries in unit 0 directory. 134 135 // Vendor immediate entry is not found. 136 KUNIT_EXPECT_LT(test, show_immediate(unit0_dev, &config_rom_attributes[0].attr, buf), 0); 137 138 // 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"); 141 142 // 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); 144 145 // 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"); 148 149 // 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"); 152 153 // 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"); 156 157 kunit_kfree(test, buf); 158 159 get_modalias_ids(&unit0, ids); 160 KUNIT_EXPECT_MEMEQ(test, ids, unit0_expected_ids, sizeof(ids)); 161} 162 163static void device_attr_legacy_avc(struct kunit *test) 164{ 165 static const struct fw_device node = { 166 .device = { 167 .type = &fw_device_type, 168 }, 169 .config_rom = legacy_avc_config_rom, 170 .config_rom_length = sizeof(legacy_avc_config_rom), 171 }; 172 static const struct fw_unit unit0 = { 173 .device = { 174 .type = &fw_unit_type, 175 .parent = (struct device *)&node.device, 176 }, 177 .directory = &legacy_avc_config_rom[11], 178 }; 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}; 184 185 // Ensure associations for node and unit devices. 186 187 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); 190 191 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); 195 196 // For entries in root directory. 197 198 // 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"); 201 202 // 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"); 205 206 // 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); 208 209 // 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"); 212 213 // For entries in unit 0 directory. 214 215 // Vendor immediate entry is not found. 216 KUNIT_EXPECT_LT(test, show_immediate(unit0_dev, &config_rom_attributes[0].attr, buf), 0); 217 218 // Model immediate entry is not found. 219 KUNIT_EXPECT_LT(test, show_immediate(unit0_dev, &config_rom_attributes[4].attr, buf), 0); 220 221 // 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); 223 224 // 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); 226 227 // 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"); 230 231 // 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"); 234 235 kunit_kfree(test, buf); 236 237 get_modalias_ids(&unit0, ids); 238 KUNIT_EXPECT_MEMEQ(test, ids, unit0_expected_ids, sizeof(ids)); 239} 240 241static struct kunit_case device_attr_test_cases[] = { 242 KUNIT_CASE(device_attr_simple_avc), 243 KUNIT_CASE(device_attr_legacy_avc), 244 {} 245}; 246 247static struct kunit_suite device_attr_test_suite = { 248 .name = "firewire-device-attribute", 249 .test_cases = device_attr_test_cases, 250}; 251kunit_test_suite(device_attr_test_suite); 252