// SPDX-License-Identifier: GPL-2.0-only//// device-attribute-test.c - An application of Kunit to test implementation for device attributes.//// Copyright (c) 2023 Takashi Sakamoto//// This file can not be built independently since it is intentionally included in core-device.c. #include <kunit/test.h> // Configuration ROM for AV/C Devices 1.0 (Dec. 12, 2000, 1394 Trading Association)// Annex C:Configuration ROM example(informative)// C.1 Simple AV/C device//// Copied from the documentation.static const u32 simple_avc_config_rom[] = {	0x0404eabf,	0x31333934,	0xe0646102,	0xffffffff,	0xffffffff,	0x00063287, // root directory.	0x03ffffff,	0x8100000a,	0x17ffffff,	0x8100000e,	0x0c0083c0,	0xd1000001,	0x0004442d, // unit 0 directory.	0x1200a02d,	0x13010001,	0x17ffffff,	0x81000007,	0x0005c915, // leaf for textual descriptor.	0x00000000,	0x00000000,	0x56656e64,	0x6f72204e,	0x616d6500,	0x00057f16, // leaf for textual descriptor.	0x00000000,	0x00000000,	0x4d6f6465,	0x6c204e61,	0x6d650000,}; // Ibid.// Annex A:Consideration for configuration ROM reader design (informative)// A.1 Vendor directory//// Written by hand.static const u32 legacy_avc_config_rom[] = {	0x04199fe7,	0x31333934,	0xe0644000,	0x00112233,	0x44556677,	0x0005dace, // root directory.	0x03012345,	0x0c0083c0,	0x8d000009,	0xd1000002,	0xc3000004,	0x0002e107, // unit 0 directory.	0x12abcdef,	0x13543210,	0x0002cb73, // vendor directory.	0x17fedcba,	0x81000004,	0x00026dc1, // leaf for EUI-64.	0x00112233,	0x44556677,	0x00050e84, // leaf for textual descriptor.	0x00000000,	0x00000000,	0x41424344,	0x45464748,	0x494a0000,}; static void device_attr_simple_avc(struct kunit *test){	static const struct fw_device node = {		.device = {			.type = &fw_device_type,		},		.config_rom = simple_avc_config_rom,		.config_rom_length = sizeof(simple_avc_config_rom),	};	static const struct fw_unit unit0 = {		.device = {			.type = &fw_unit_type,			.parent = (struct device *)&node.device,		},		.directory = &simple_avc_config_rom[12],	};	struct device *node_dev = (struct device *)&node.device;	struct device *unit0_dev = (struct device *)&unit0.device;	static const int unit0_expected_ids[] = {0x00ffffff, 0x00ffffff, 0x0000a02d, 0x00010001};	char *buf = kunit_kzalloc(test, PAGE_SIZE, GFP_KERNEL);	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);	int ids[4] = {0, 0, 0, 0}; 	// Ensure associations for node and unit devices. 	KUNIT_ASSERT_TRUE(test, is_fw_device(node_dev));	KUNIT_ASSERT_FALSE(test, is_fw_unit(node_dev));	KUNIT_ASSERT_PTR_EQ(test, fw_device(node_dev), &node); 	KUNIT_ASSERT_FALSE(test, is_fw_device(unit0_dev));	KUNIT_ASSERT_TRUE(test, is_fw_unit(unit0_dev));	KUNIT_ASSERT_PTR_EQ(test, fw_parent_device((&unit0)), &node);	KUNIT_ASSERT_PTR_EQ(test, fw_unit(unit0_dev), &unit0); 	// For entries in root directory. 	// Vendor immediate entry is found.	KUNIT_EXPECT_GT(test, show_immediate(node_dev, &config_rom_attributes[0].attr, buf), 0);	KUNIT_EXPECT_STREQ(test, buf, "0xffffff\n"); 	// Model immediate entry is found.	KUNIT_EXPECT_GT(test, show_immediate(node_dev, &config_rom_attributes[4].attr, buf), 0);	KUNIT_EXPECT_STREQ(test, buf, "0xffffff\n"); 	// Descriptor leaf entry for vendor is found.	KUNIT_EXPECT_GT(test, show_text_leaf(node_dev, &config_rom_attributes[5].attr, buf), 0);	KUNIT_EXPECT_STREQ(test, buf, "Vendor Name\n"); 	// Descriptor leaf entry for model is found.	KUNIT_EXPECT_GT(test, show_text_leaf(node_dev, &config_rom_attributes[6].attr, buf), 0);	KUNIT_EXPECT_STREQ(test, buf, "Model Name\n"); 	// For entries in unit 0 directory. 	// Vendor immediate entry is not found.	KUNIT_EXPECT_LT(test, show_immediate(unit0_dev, &config_rom_attributes[0].attr, buf), 0); 	// Model immediate entry is found.	KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[4].attr, buf), 0);	KUNIT_EXPECT_STREQ(test, buf, "0xffffff\n"); 	// Descriptor leaf entry for vendor is not found.	KUNIT_EXPECT_LT(test, show_text_leaf(unit0_dev, &config_rom_attributes[5].attr, buf), 0); 	// Descriptor leaf entry for model is found.	KUNIT_EXPECT_GT(test, show_text_leaf(unit0_dev, &config_rom_attributes[6].attr, buf), 0);	KUNIT_EXPECT_STREQ(test, buf, "Model Name\n"); 	// Specifier_ID immediate entry is found.	KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[2].attr, buf), 0);	KUNIT_EXPECT_STREQ(test, buf, "0x00a02d\n"); 	// Version immediate entry is found.	KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[3].attr, buf), 0);	KUNIT_EXPECT_STREQ(test, buf, "0x010001\n"); 	kunit_kfree(test, buf); 	get_modalias_ids(&unit0, ids);	KUNIT_EXPECT_MEMEQ(test, ids, unit0_expected_ids, sizeof(ids));} static void device_attr_legacy_avc(struct kunit *test){	static const struct fw_device node = {		.device = {			.type = &fw_device_type,		},		.config_rom = legacy_avc_config_rom,		.config_rom_length = sizeof(legacy_avc_config_rom),	};	static const struct fw_unit unit0 = {		.device = {			.type = &fw_unit_type,			.parent = (struct device *)&node.device,		},		.directory = &legacy_avc_config_rom[11],	};	struct device *node_dev = (struct device *)&node.device;	struct device *unit0_dev = (struct device *)&unit0.device;	static const int unit0_expected_ids[] = {0x00012345, 0x00fedcba, 0x00abcdef, 0x00543210};	char *buf = kunit_kzalloc(test, PAGE_SIZE, GFP_KERNEL);	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);	int ids[4] = {0, 0, 0, 0}; 	// Ensure associations for node and unit devices. 	KUNIT_ASSERT_TRUE(test, is_fw_device(node_dev));	KUNIT_ASSERT_FALSE(test, is_fw_unit(node_dev));	KUNIT_ASSERT_PTR_EQ(test, fw_device((node_dev)), &node); 	KUNIT_ASSERT_FALSE(test, is_fw_device(unit0_dev));	KUNIT_ASSERT_TRUE(test, is_fw_unit(unit0_dev));	KUNIT_ASSERT_PTR_EQ(test, fw_parent_device((&unit0)), &node);	KUNIT_ASSERT_PTR_EQ(test, fw_unit(unit0_dev), &unit0); 	// For entries in root directory. 	// Vendor immediate entry is found.	KUNIT_EXPECT_GT(test, show_immediate(node_dev, &config_rom_attributes[0].attr, buf), 0);	KUNIT_EXPECT_STREQ(test, buf, "0x012345\n"); 	// Model immediate entry is found.	KUNIT_EXPECT_GT(test, show_immediate(node_dev, &config_rom_attributes[4].attr, buf), 0);	KUNIT_EXPECT_STREQ(test, buf, "0xfedcba\n"); 	// Descriptor leaf entry for vendor is not found.	KUNIT_EXPECT_LT(test, show_text_leaf(node_dev, &config_rom_attributes[5].attr, buf), 0); 	// Descriptor leaf entry for model is found.	KUNIT_EXPECT_GT(test, show_text_leaf(node_dev, &config_rom_attributes[6].attr, buf), 0);	KUNIT_EXPECT_STREQ(test, buf, "ABCDEFGHIJ\n"); 	// For entries in unit 0 directory. 	// Vendor immediate entry is not found.	KUNIT_EXPECT_LT(test, show_immediate(unit0_dev, &config_rom_attributes[0].attr, buf), 0); 	// Model immediate entry is not found.	KUNIT_EXPECT_LT(test, show_immediate(unit0_dev, &config_rom_attributes[4].attr, buf), 0); 	// Descriptor leaf entry for vendor is not found.	KUNIT_EXPECT_LT(test, show_text_leaf(unit0_dev, &config_rom_attributes[5].attr, buf), 0); 	// Descriptor leaf entry for model is not found.	KUNIT_EXPECT_LT(test, show_text_leaf(unit0_dev, &config_rom_attributes[6].attr, buf), 0); 	// Specifier_ID immediate entry is found.	KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[2].attr, buf), 0);	KUNIT_EXPECT_STREQ(test, buf, "0xabcdef\n"); 	// Version immediate entry is found.	KUNIT_EXPECT_GT(test, show_immediate(unit0_dev, &config_rom_attributes[3].attr, buf), 0);	KUNIT_EXPECT_STREQ(test, buf, "0x543210\n"); 	kunit_kfree(test, buf); 	get_modalias_ids(&unit0, ids);	KUNIT_EXPECT_MEMEQ(test, ids, unit0_expected_ids, sizeof(ids));} static struct kunit_case device_attr_test_cases[] = {	KUNIT_CASE(device_attr_simple_avc),	KUNIT_CASE(device_attr_legacy_avc),	{}}; static struct kunit_suite device_attr_test_suite = {	.name = "firewire-device-attribute",	.test_cases = device_attr_test_cases,};kunit_test_suite(device_attr_test_suite);