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Alex Elder says: ==================== net: ipa: rework resource programming This series reworks the way IPA resources are defined and programmed. It is a little long--and I apologize for that--but I think the patches are best taken together as a single unit. The IPA hardware operates with a set of distinct "resources." Each hardware instance has a fixed number of each resource type available. Available resources are divided into smaller pools, with each pool shared by endpoints in a "resource group." Each endpoint is thus assigned to a resource group that determines which pools supply resources the IPA hardware uses to handle the endpoint's processing. The exact set of resources used can differ for each version of IPA. Except for IPA v3.0 and v3.1, there are 5 source and 2 destination resource types, but there's no reason to assume this won't change. The number of resource groups used *does* typically change based on the hardware version. For example, some versions target reduced functionality and support fewer resource groups. With that as background... The net result of this series is to improve the flexibility with which IPA resources and resource groups are defined, permitting each version of IPA to define its own set of resources and groups. Along the way it isolates the resource-related code, and fixes a few bugs related to resource handling. The first patch moves resource-related code to a new C file (and header). It generates a checkpatch warning about updating MAINTAINERS, which can be ignored. The second patch fixes a bug, but the bug does not affect SDM845 or SC7180. The third patch defines an enumerated type whose members provide symbolic names for resource groups. The fourth defines some resource limits for SDM845 that were not previously being programmed. That platform "works" without this, but to be correct, these limits should really be programmed. The fifth patch uses a single enumerated type to define both source and destination resource type IDs, and the sixth uses those IDs to index the resource limit arrays. The seventh moves the definition of that enumerated type into the platform data files, allowing each platform to define its own set of resource types. The eighth and ninth are fairly trivial changes. One replaces two "max" symbols having the same value with a single symbol. And the other replaces two distinct but otherwise identical structure types with a single common one. The 10th is a small preparatory patch for the 11th, passing a different argument to a function that programs resource values. The 11th allows the actual number of source and destination resource groups for a platform to be specified in its configuration data. That way the number is based on the actual number of groups defined. This removes the need for a sort of clunky pair of functions that defined that information previously. Finally, the last patch just increases the number of resource groups that can be defined to 8. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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| 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.