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The fixed maximum size of IPC message does not allow for large transfers, e.g. for filter data. Currently such messages will be divided into smaller pieces and sent to firmware in multiple chunks. For future IPC, this strategy is not suitable. The maximum IPC message size is limited by host box size which can be known when firmware is ready, so the fw_ready callback can allocate IPC messages with platform-specific sizes instead of the current fixed-size. To be compatible with released firmware, current platforms will still use SOF_IPC_MSG_MAX_SIZE. For future platforms, there will be a new fw_ready function and the platform-specific allocation will take place there. Signed-off-by: Rander Wang <rander.wang@intel.com> Reviewed-by: Bard Liao <bard.liao@intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com> Message-Id: <20211008093836.28210-1-peter.ujfalusi@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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.