diff options
Diffstat (limited to 'drivers/firewire/ohci-serdes-test.c')
| -rw-r--r-- | drivers/firewire/ohci-serdes-test.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/drivers/firewire/ohci-serdes-test.c b/drivers/firewire/ohci-serdes-test.c new file mode 100644 index 000000000000..258f668619ef --- /dev/null +++ b/drivers/firewire/ohci-serdes-test.c @@ -0,0 +1,122 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +// +// ohci-serdes-test.c - An application of Kunit to check serialization/deserialization of data in +// buffers and registers defined in 1394 OHCI specification. +// +// Copyright (c) 2024 Takashi Sakamoto + +#include <kunit/test.h> + +#include "ohci.h" + + +static void test_self_id_count_register_deserialization(struct kunit *test) +{ + const u32 expected = 0x803d0594; + + bool is_error = ohci1394_self_id_count_is_error(expected); + u8 generation = ohci1394_self_id_count_get_generation(expected); + u32 size = ohci1394_self_id_count_get_size(expected); + + KUNIT_EXPECT_TRUE(test, is_error); + KUNIT_EXPECT_EQ(test, 0x3d, generation); + KUNIT_EXPECT_EQ(test, 0x165, size); +} + +static void test_self_id_receive_buffer_deserialization(struct kunit *test) +{ + const u32 buffer[] = { + 0x0006f38b, + 0x807fcc56, + 0x7f8033a9, + 0x8145cc5e, + 0x7eba33a1, + }; + + u8 generation = ohci1394_self_id_receive_q0_get_generation(buffer[0]); + u16 timestamp = ohci1394_self_id_receive_q0_get_timestamp(buffer[0]); + + KUNIT_EXPECT_EQ(test, 0x6, generation); + KUNIT_EXPECT_EQ(test, 0xf38b, timestamp); +} + +static void test_at_data_serdes(struct kunit *test) +{ + static const __le32 expected[] = { + cpu_to_le32(0x00020e80), + cpu_to_le32(0xffc2ffff), + cpu_to_le32(0xe0000000), + }; + __le32 quadlets[] = {0, 0, 0}; + bool has_src_bus_id = ohci1394_at_data_get_src_bus_id(expected); + unsigned int speed = ohci1394_at_data_get_speed(expected); + unsigned int tlabel = ohci1394_at_data_get_tlabel(expected); + unsigned int retry = ohci1394_at_data_get_retry(expected); + unsigned int tcode = ohci1394_at_data_get_tcode(expected); + unsigned int destination_id = ohci1394_at_data_get_destination_id(expected); + u64 destination_offset = ohci1394_at_data_get_destination_offset(expected); + + KUNIT_EXPECT_FALSE(test, has_src_bus_id); + KUNIT_EXPECT_EQ(test, 0x02, speed); + KUNIT_EXPECT_EQ(test, 0x03, tlabel); + KUNIT_EXPECT_EQ(test, 0x02, retry); + KUNIT_EXPECT_EQ(test, 0x08, tcode); + + ohci1394_at_data_set_src_bus_id(quadlets, has_src_bus_id); + ohci1394_at_data_set_speed(quadlets, speed); + ohci1394_at_data_set_tlabel(quadlets, tlabel); + ohci1394_at_data_set_retry(quadlets, retry); + ohci1394_at_data_set_tcode(quadlets, tcode); + ohci1394_at_data_set_destination_id(quadlets, destination_id); + ohci1394_at_data_set_destination_offset(quadlets, destination_offset); + + KUNIT_EXPECT_MEMEQ(test, quadlets, expected, sizeof(expected)); +} + +static void test_it_data_serdes(struct kunit *test) +{ + static const __le32 expected[] = { + cpu_to_le32(0x000349a7), + cpu_to_le32(0x02300000), + }; + __le32 quadlets[] = {0, 0}; + unsigned int scode = ohci1394_it_data_get_speed(expected); + unsigned int tag = ohci1394_it_data_get_tag(expected); + unsigned int channel = ohci1394_it_data_get_channel(expected); + unsigned int tcode = ohci1394_it_data_get_tcode(expected); + unsigned int sync = ohci1394_it_data_get_sync(expected); + unsigned int data_length = ohci1394_it_data_get_data_length(expected); + + KUNIT_EXPECT_EQ(test, 0x03, scode); + KUNIT_EXPECT_EQ(test, 0x01, tag); + KUNIT_EXPECT_EQ(test, 0x09, channel); + KUNIT_EXPECT_EQ(test, 0x0a, tcode); + KUNIT_EXPECT_EQ(test, 0x7, sync); + KUNIT_EXPECT_EQ(test, 0x0230, data_length); + + ohci1394_it_data_set_speed(quadlets, scode); + ohci1394_it_data_set_tag(quadlets, tag); + ohci1394_it_data_set_channel(quadlets, channel); + ohci1394_it_data_set_tcode(quadlets, tcode); + ohci1394_it_data_set_sync(quadlets, sync); + ohci1394_it_data_set_data_length(quadlets, data_length); + + KUNIT_EXPECT_MEMEQ(test, quadlets, expected, sizeof(expected)); +} + +static struct kunit_case ohci_serdes_test_cases[] = { + KUNIT_CASE(test_self_id_count_register_deserialization), + KUNIT_CASE(test_self_id_receive_buffer_deserialization), + KUNIT_CASE(test_at_data_serdes), + KUNIT_CASE(test_it_data_serdes), + {} +}; + +static struct kunit_suite ohci_serdes_test_suite = { + .name = "firewire-ohci-serdes", + .test_cases = ohci_serdes_test_cases, +}; +kunit_test_suite(ohci_serdes_test_suite); + +MODULE_DESCRIPTION("FireWire buffers and registers serialization/deserialization unit test suite"); +MODULE_LICENSE("GPL"); |