// 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);
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