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| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2024-08-02 09:36:03 +0900 |
|---|---|---|
| committer | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2024-08-02 09:36:03 +0900 |
| commit | 8db9d1557122a714549b91e25fd22301bc3a5178 (patch) | |
| tree | bfca30619a714bbb2131ff7cd3de20c1ac7d6d60 /drivers/firewire/ohci-serdes-test.c | |
| parent | 3593b38a1367c3b57e986b0d2a9b6ceb84ec44ce (diff) | |
firewire: ohci: add static inline functions to serialize/deserialize data of AT DMA
In 1394 OHCI specification, the format of data for AT DMA is different from
the format of asynchronous packet in IEEE 1394 specification, in its spd
and srcBusID fields.
This commit adds some static inline functions to serialize/deserialize the
data of AT DMA.
Link: https://lore.kernel.org/r/20240802003606.109402-2-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Diffstat (limited to 'drivers/firewire/ohci-serdes-test.c')
| -rw-r--r-- | drivers/firewire/ohci-serdes-test.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/firewire/ohci-serdes-test.c b/drivers/firewire/ohci-serdes-test.c index 304a09ff528e..5d48d53b493a 100644 --- a/drivers/firewire/ohci-serdes-test.c +++ b/drivers/firewire/ohci-serdes-test.c @@ -40,9 +40,43 @@ static void test_self_id_receive_buffer_deserialization(struct kunit *test) 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 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), {} }; |