FreeBSD src
c283dd9dad
o do not use the in* and out* functions. These functions are used by legacy drivers and thus must have ia32 compatible behaviour. Hence, they need to have fences. Using these functions for newbus would then pessimize performance. o remove the conditional compilation of PIO and/or MEMIO support. It's a PITA without having any significant benefit. We always support them both. Since there are no I/O ports on ia64 (they are simulated by the chipset by translating memory mapped I/O to predefined uncacheable memory regions) the only difference between PIO and MEMIO is in the address calculation. There should be enough ILP that can be exploited here that making these computations compile-time conditional is not worth it. We now also don't use the read* and write* functions. o Add the missing *_8 variants. They were missing, although not missed. It's for completeness. o Do not add the fences that were present in the low-level support functions here. We're using uncacheable memory, which means that accesses are in program order. Change the barrier implementation to not only do a memory fence, but also an acceptance fence. This should more reliably synchronize drivers with the hardware. The memory fence enforces ordering, but does not imply visibility (ie the access does not necessarily have happened). This is what the acceptance deals with. cpufunc.h cleanup: o Remove the low-level memory mapped I/O support functions. They are not used. Keep the low-level I/O port access functions for legacy drivers and add fences to ensure ia32 compatibility. o Remove the syscons specific functions now that we have moved the proper definitions where they belong. o Replace the ia64_port_address() and ia64_memory_address() functions with macros. There's a bigger change inline functions get inlined when there aren't function callsi and the calculations are simply enough to do it with macros. Replace the one reference to ia64_memory address in mp_machdep.c to use the macro. |
||
|---|---|---|
| bin | ||
| contrib | ||
| crypto | ||
| etc | ||
| games | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| sbin | ||
| secure | ||
| share | ||
| sys | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| COPYRIGHT | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| 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, the most commonly used one being ``world'', which rebuilds and installs everything in the FreeBSD system from the source tree except the kernel, the kernel-modules and the contents of /etc. 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, documentation for which can be found at: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html And in the config(8) man page. 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 sample kernel configuration files reside in the sys/<arch>/conf sub-directory (assuming that you've installed the kernel sources), the file named GENERIC being the one used to build your initial installation kernel. The file NOTES contains entries and documentation for all possible devices, not just those commonly used. It is the successor of the ancient LINT file, but in contrast to LINT, it is not buildable as a kernel but a pure reference and documentation file. Source Roadmap: --------------- bin System/user commands. 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. sbin System commands. secure Cryptographic libraries and commands. share Shared resources. sys Kernel sources. 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