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Diffstat (limited to 'drivers/firewire/device-attribute-test.c')
| -rw-r--r-- | drivers/firewire/device-attribute-test.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/drivers/firewire/device-attribute-test.c b/drivers/firewire/device-attribute-test.c new file mode 100644 index 000000000000..2f123c6b0a16 --- /dev/null +++ b/drivers/firewire/device-attribute-test.c @@ -0,0 +1,251 @@ +// 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); + 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); + 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); |