mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
7b9599bb9a
Each DW DMA controller channel can be synthesized with different parameters like maximum burst-length, multi-block support, maximum data width, etc. Most of these parameters determine the DW DMAC channels performance in its own aspect. On the other hand these parameters can be implicitly responsible for the channels performance degradation (for instance multi-block support is a very useful feature, but having it disabled during the DW DMAC synthesize will provide a more optimized core). Since DMA slave devices may have critical dependency on the DMA engine performance, let's provide a way for the slave devices to have the DMA-channels allocated from a pool of the channels, which according to the system engineer fulfill their performance requirements. The pool is determined by a mask optionally specified in the fifth DMA-cell of the DMA DT-property. If the fifth cell is omitted from the phandle arguments or the mask is zero, then the allocation will be performed from a set of all channels provided by the DMA controller. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20200731200826.9292-2-Sergey.Semin@baikalelectronics.ru Signed-off-by: Vinod Koul <vkoul@kernel.org> |
||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.