Set proper IPL_SOFTfoo values even in !FAST_SOFTINTS case.
Some assertions in MI code expect they have unique values,
per comments from rmind@.
Also cleanup various "interrupt hierarchy" code since IPL_NONE and
IPL_SOFTfoo should not be set by any hardware interrupt establish functions.
Ok'ed by mrg@, tested on shark and hpcarm.
- Reduce available SPL levels for hardware devices to none, vm, sched, high.
- Acquire kernel_lock only for interrupts at IPL_VM.
- Implement threaded soft interrupts.
- finish implementing splraiseipl (and makeiplcookie).
http://mail-index.NetBSD.org/tech-kern/2006/07/01/0000.html
- complete workqueue(9) and fix its ipl problem, which is reported
to cause audio skipping.
- fix netbt (at least compilation problems) for some ports.
- fix PR/33218.
based systems. Untested on shark, but is the right thing to do. I suspect
the original arm32 intr.h had the bug, and when the ports split we just took
the bug.
The IOMD/VIDC combination is now moved to arch/arm/iomd together. These
files still need a lot of cleaning up :( .... esp. the RC7500 support that
is still dormant in it; this needs either to be removed or split out for
RC7500's ``VIDC'' video/audio variant.
Apart from the RC7500 support wich is still in arch/arm32 the
iomd,vidc,riscpc and podulebus subdirectories of arch/arm32 can be removed.
This split still uses some small parts of arch/arm32 .... those are the MI
parts that haven't been moved yet.
RiscPC/A7000 have been tested and confirmed to build as should NC.
