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Commit Graph

5 Commits

Author SHA1 Message Date
Takashi Sakamoto
7a14f78d70 firewire: ohci: add static inline functions to deserialize for Self-ID DMA operation
The SelfI-ID is one type of DMAs defined in 1394 OHCI specification. It is
operated by two registers, one interrupt, and has one format of buffer.

This commit adds some static inline functions to deserialize the data in
the buffer and registers. Some KUnit tests are also added to check their
reliability.

Link: https://lore.kernel.org/r/20240702222034.1378764-4-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
2024-07-04 08:12:48 +09:00
Takashi Sakamoto
7bd10e0e3a firewire: core: add enumerator of self ID sequences and its KUnit test
When the state of bus reset finishes, 1394 OHCI driver constructs self ID
sequences, then it calls fw_core_handle_bus_reset() in core function. The
core function enumerates the self ID sequences to build bus topology.

This commit adds a structure and some helper functions for the enumeration,
and adds a KUnit test suite to ensure its expected behaviour.

Link: https://lore.kernel.org/r/20240605235155.116468-2-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
2024-06-17 08:37:02 +09:00
Takashi Sakamoto
75527d8d9e firewire: core: add common inline functions to serialize/deserialize asynchronous packet header
In both core and 1394 OHCI driver, some hard-coded values and macros are
used to serialize/deserialize the header of asynchronous packets. It is
inconvenient to reuse them.

This commit adds some helper inline functions with their tests for the
purpose.

Link: https://lore.kernel.org/r/20240428071347.409202-2-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
2024-05-06 11:06:04 +09:00
Takashi Sakamoto
1770d39d10 firewire: test: add KUnit test for device attributes
The traverse over CSR space results in attributes of node and unit
devices. Any test of the traverse is useful.

This commit adds a skeleton of KUnit test for the purpose.

Link: https://lore.kernel.org/r/20231221134849.603857-4-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
2024-01-08 09:36:56 +09:00
Takashi Sakamoto
dc7c51638f firewire: add KUnit test to check layout of UAPI structures
In future commits, some new structure will be added to express new type
of event. They are exposed to user space as the part of UAPI. It is likely
to get trouble in ioctl compatibility layer for 32 bit binaries in 64 bit
host machine since the layout of structure could differ depending on
System V ABI for these architectures. Actually the subsystem already got
such trouble at v2.6.27. It is preferable to decide the layout of
structure carefully so that the layer is free from such trouble.

This commit utilizes KUnit framework to check the layout of structure for
the purpose. A test is added for the existent issue.

Cc: kunit-dev@googlegroups.com
Link: https://lore.kernel.org/r/20230529113406.986289-2-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
2023-05-30 08:12:39 +09:00