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1// SPDX-License-Identifier: GPL-2.0-or-later2//3// ohci-serdes-test.c - An application of Kunit to check serialization/deserialization of data in4// buffers and registers defined in 1394 OHCI specification.5//6// Copyright (c) 2024 Takashi Sakamoto7 8#include <kunit/test.h>9 10#include "ohci.h"11 12 13static void test_self_id_count_register_deserialization(struct kunit *test)14{15 const u32 expected = 0x803d0594;16 17 bool is_error = ohci1394_self_id_count_is_error(expected);18 u8 generation = ohci1394_self_id_count_get_generation(expected);19 u32 size = ohci1394_self_id_count_get_size(expected);20 21 KUNIT_EXPECT_TRUE(test, is_error);22 KUNIT_EXPECT_EQ(test, 0x3d, generation);23 KUNIT_EXPECT_EQ(test, 0x165, size);24}25 26static void test_self_id_receive_buffer_deserialization(struct kunit *test)27{28 const u32 buffer[] = {29 0x0006f38b,30 0x807fcc56,31 0x7f8033a9,32 0x8145cc5e,33 0x7eba33a1,34 };35 36 u8 generation = ohci1394_self_id_receive_q0_get_generation(buffer[0]);37 u16 timestamp = ohci1394_self_id_receive_q0_get_timestamp(buffer[0]);38 39 KUNIT_EXPECT_EQ(test, 0x6, generation);40 KUNIT_EXPECT_EQ(test, 0xf38b, timestamp);41}42 43static void test_at_data_serdes(struct kunit *test)44{45 static const __le32 expected[] = {46 cpu_to_le32(0x00020e80),47 cpu_to_le32(0xffc2ffff),48 cpu_to_le32(0xe0000000),49 };50 __le32 quadlets[] = {0, 0, 0};51 bool has_src_bus_id = ohci1394_at_data_get_src_bus_id(expected);52 unsigned int speed = ohci1394_at_data_get_speed(expected);53 unsigned int tlabel = ohci1394_at_data_get_tlabel(expected);54 unsigned int retry = ohci1394_at_data_get_retry(expected);55 unsigned int tcode = ohci1394_at_data_get_tcode(expected);56 unsigned int destination_id = ohci1394_at_data_get_destination_id(expected);57 u64 destination_offset = ohci1394_at_data_get_destination_offset(expected);58 59 KUNIT_EXPECT_FALSE(test, has_src_bus_id);60 KUNIT_EXPECT_EQ(test, 0x02, speed);61 KUNIT_EXPECT_EQ(test, 0x03, tlabel);62 KUNIT_EXPECT_EQ(test, 0x02, retry);63 KUNIT_EXPECT_EQ(test, 0x08, tcode);64 65 ohci1394_at_data_set_src_bus_id(quadlets, has_src_bus_id);66 ohci1394_at_data_set_speed(quadlets, speed);67 ohci1394_at_data_set_tlabel(quadlets, tlabel);68 ohci1394_at_data_set_retry(quadlets, retry);69 ohci1394_at_data_set_tcode(quadlets, tcode);70 ohci1394_at_data_set_destination_id(quadlets, destination_id);71 ohci1394_at_data_set_destination_offset(quadlets, destination_offset);72 73 KUNIT_EXPECT_MEMEQ(test, quadlets, expected, sizeof(expected));74}75 76static void test_it_data_serdes(struct kunit *test)77{78 static const __le32 expected[] = {79 cpu_to_le32(0x000349a7),80 cpu_to_le32(0x02300000),81 };82 __le32 quadlets[] = {0, 0};83 unsigned int scode = ohci1394_it_data_get_speed(expected);84 unsigned int tag = ohci1394_it_data_get_tag(expected);85 unsigned int channel = ohci1394_it_data_get_channel(expected);86 unsigned int tcode = ohci1394_it_data_get_tcode(expected);87 unsigned int sync = ohci1394_it_data_get_sync(expected);88 unsigned int data_length = ohci1394_it_data_get_data_length(expected);89 90 KUNIT_EXPECT_EQ(test, 0x03, scode);91 KUNIT_EXPECT_EQ(test, 0x01, tag);92 KUNIT_EXPECT_EQ(test, 0x09, channel);93 KUNIT_EXPECT_EQ(test, 0x0a, tcode);94 KUNIT_EXPECT_EQ(test, 0x7, sync);95 KUNIT_EXPECT_EQ(test, 0x0230, data_length);96 97 ohci1394_it_data_set_speed(quadlets, scode);98 ohci1394_it_data_set_tag(quadlets, tag);99 ohci1394_it_data_set_channel(quadlets, channel);100 ohci1394_it_data_set_tcode(quadlets, tcode);101 ohci1394_it_data_set_sync(quadlets, sync);102 ohci1394_it_data_set_data_length(quadlets, data_length);103 104 KUNIT_EXPECT_MEMEQ(test, quadlets, expected, sizeof(expected));105}106 107static struct kunit_case ohci_serdes_test_cases[] = {108 KUNIT_CASE(test_self_id_count_register_deserialization),109 KUNIT_CASE(test_self_id_receive_buffer_deserialization),110 KUNIT_CASE(test_at_data_serdes),111 KUNIT_CASE(test_it_data_serdes),112 {}113};114 115static struct kunit_suite ohci_serdes_test_suite = {116 .name = "firewire-ohci-serdes",117 .test_cases = ohci_serdes_test_cases,118};119kunit_test_suite(ohci_serdes_test_suite);120 121MODULE_DESCRIPTION("FireWire buffers and registers serialization/deserialization unit test suite");122MODULE_LICENSE("GPL");123