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41378cfdc4
The SF2 crossbar register is a packed bitfield, giving the index of the external port selected for each of the internal ports. On BCM4908 (the only currently-supported switch family with a crossbar), there are 2 internal ports and 3 external ports, so there are 2 bits per internal port. The driver currently conflates the "bits per port" and "number of ports" concepts, lumping both into the `num_crossbar_int_ports` field. Since it is currently only possible for either of these counts to have a value of 2, there is no behavioral error resulting from this situation for now. Make the code more readable (and support the future possibility of larger crossbars) by adding a `num_crossbar_ext_bits` field to represent the "bits per port" count and relying on this where appropriate instead. Signed-off-by: Sam Edwards <CFSworks@gmail.com> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> Link: https://patch.msgid.link/20241003212301.1339647-1-CFSworks@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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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.