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The sequence required to use the single PE BAR mode is kinda janky and requires a little explanation. The API was designed with P7-IOC style windows where the setup process is something like: 1. Configure the window start / end address 2. Enable the window 3. Map the segments of each window to the PE For Single PE BARs the process is: 1. Set the PE for segment zero on a disabled window 2. Set the range 3. Enable the window Move the OPAL calls into their own helper functions where the quirks can be contained. Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200722065715.1432738-9-oohall@gmail.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 Restructured Text 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.