freebsd kernel with SKQ
686450c898
and armv6 architecures. The primary enhancement over the old design is support for hierarchical interrupt controllers (such as a gpio driver which can receive interrupts from a root PIC and act as a PIC itself for clients interested in handling a change of gpio pin state as an interrupt). The new code also provides an infrastructure for mapping interrupts described in metadata in the form of a "controller reference plus interrupt number" tuple into the simple "0-n" flat numeric space understood by rman and the bus resource mechanisms. Use of the new code is enabled by setting the ARM_INTRNG option, and by making a few simple changes to the platform's support code. In addition each existing PIC driver needs changes to be ready for INTRNG; this commit contains the changes for the arm/gic driver, which most armv6 SoCs use, but it does not enable the new code yet on any platform. This project has been many years in the making, starting as a GSoC project by Jakub Klama (jceel@) in 2012. That didn't get committed right away and the source base evolved out from under it to some degree. In 2014 I rebased the diffs to then -current and did some enhancements in the area of mapping interrupt numbers and storing associated fdt data, then the project went cold again for a while. Eventually Svata Kraus took that work in progress and did another big round of work on it, removing most of the remaining rough edges. Finally I took that and made one more pass through it, mostly disabling the "INTR_SOLO" feature for now, pending further design discussions on how to most efficiently dispatch a pending interrupt through more than one layer of PIC. The current code with the INTR_SOLO feature disabled uses approximate 100 extra cpu cycles for each cascaded PIC the interrupt has to be passed to, so what's left to do is about efficiency, not correct operation. Differential Revision: https://reviews.freebsd.org/D2047 |
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| bin | ||
| cddl | ||
| contrib | ||
| crypto | ||
| etc | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| rescue | ||
| sbin | ||
| secure | ||
| share | ||
| sys | ||
| targets | ||
| tests | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| .arcconfig | ||
| .arclint | ||
| COPYRIGHT | ||
| LOCKS | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| ObsoleteFiles.inc | ||
| README | ||
| UPDATING | ||
This is the top level of the FreeBSD source directory. This file was last revised on: $FreeBSD$ For copyright information, please see the file COPYRIGHT in this directory (additional copyright information also exists for some sources in this tree - please see the specific source directories for more information). The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7) and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html for more information, including setting make(1) variables. The `buildkernel` and `installkernel` targets build and install the kernel and the modules (see below). Please see the top of the Makefile in this directory for more information on the standard build targets and compile-time flags. Building a kernel is a somewhat more involved process. See build(7), config(8), and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information. Note: If you want to build and install the kernel with the `buildkernel` and `installkernel` targets, you might need to build world before. More information is available in the handbook. The kernel configuration files reside in the sys/<arch>/conf sub-directory. GENERIC is the default configuration used in release builds. NOTES contains entries and documentation for all possible devices, not just those commonly used. Source Roadmap: --------------- bin System/user commands. cddl Various commands and libraries under the Common Development and Distribution License. contrib Packages contributed by 3rd parties. crypto Cryptography stuff (see crypto/README). etc Template files for /etc. games Amusements. gnu Various commands and libraries under the GNU Public License. Please see gnu/COPYING* for more information. include System include files. kerberos5 Kerberos5 (Heimdal) package. lib System libraries. libexec System daemons. release Release building Makefile & associated tools. rescue Build system for statically linked /rescue utilities. sbin System commands. secure Cryptographic libraries and commands. share Shared resources. sys Kernel sources. tests Regression tests which can be run by Kyua. See tests/README for additional information. tools Utilities for regression testing and miscellaneous tasks. usr.bin User commands. usr.sbin System administration commands. For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html