The new interp4 definitions add support for more remote methods with
sequences of multi-byte data, sequences of sequences, plain integers
interleaved with sequences, and constant-size data other than 32-bit
integers. The new definitions are complex and can't fit in a simple
macro. Switch the remotectl interface to interp4, split it into a header
and source file, and update the users.
Signed-off-by: Richard Acayan <mailingradian@gmail.com>
The code for opening and closing a remote interface with an error is
duplicated in hexagonrpcd and chrecd. Like the remotectl interface
itself, the error handling is useful for most FastRPC applications. Add
a new API for opening and closing remote interfaces with error checking.
Signed-off-by: Richard Acayan <mailingradian@gmail.com>
The current method definition format has a few issues. There is no way
to represent `apps_std_mkdir(in string dir, in long long mode)` because
it has a sequence before a fixed-length argument. The fixed-length
arguments are passed in 4-byte units, making large fixed-length arrays
awkward. Sequences of sequences cannot be represented.
Add a new version of the remote method definition to support more
methods, with sequences of sequences, mixed input and output arguments,
and fixed-length data structures greater than 32 bits.
Signed-off-by: Richard Acayan <mailingradian@gmail.com>
When the kernel side of FastRPC fails, the return value is -1 and errno
is set. When the remote side of FastRPC fails, the return value is an
AEE error code. It is not specialized for the reverse tunnel. Add an
error API that can convert the return value to a string-based error.
Signed-off-by: Richard Acayan <mailingradian@gmail.com>
The FastRPC implementation is loosely related to the sensor shell. It is
useful to provide interfaces over FastRPC for sensor DSP firmware, and
enables the sensor shell to provide most physical sensors. However, the
FastRPC implementation has no meaningful connection with the sensor
shell in terms of code. Move the FastRPC implementation to the project
root to make it more intuitive to install and use and to separate it
from a distinct project.
