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The register macros are used to read and write to the switch registers. The registers are largely the same on Sparx5 and lan969x, however in some cases they differ. The differences can be one or more of the following: target size, register address, register count, group address, group count, group size, field position, field size. In order to handle these differences, we introduce a new indirection layer, that defines and maps them to corresponding values, based on the platform. As the register macro arguments can now be non-constants, we also add non-constant variants of FIELD_GET and FIELD_PREP. Since the indirection layer contributes to longer macros, we have changed the formatting of them slightly, to adhere to a 80 character limit, and added a comment if a macro is platform-specific. With these additions, we can reuse all the existing macros for lan969x. Reviewed-by: Steen Hegelund <Steen.Hegelund@microchip.com> Signed-off-by: Daniel Machon <daniel.machon@microchip.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.