Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

- Move bus dependent defines to {isa,cbus}_dmareg.h.
- Use isa/isareg.h rather than <arch>/isa/isa.h.

Tested on: i386, pc98

- Move timerreg.h to <arch>/include and split i8253 specific defines into
i8253reg.h, and add some defines to control a speaker.
- Move PPI related defines from i386/isa/spkr.c into ppireg.h and use them.
- Move IO_{PPI,TIMER} defines into ppireg.h and timerreg.h respectively.
- Use isa/isareg.h rather than <arch>/isa/isa.h.

Tested on: i386, pc98

Remove unused IO_NPX* defines.

Remove advertising clause from University of California Regent's
license, per letter dated July 22, 1999 and email from Peter Wemm,
Alan Cox and Robert Watson.

Approved by: core, peter, alc, rwatson

Clean up some antique stuff. We do not support Weitek FPUs etc, and never
did.

Correct error message.

Break out the bus front ends into their own files. Rewrite
sio_pccard_detach to use new siodetach. Add an extra arg to sioprobe
to tell driver to probe/not probe the device for IRQs.

This incorporates most of Bruce's review material. I'm at a good
checkpoint, but there will be more to come based on bde's further
reviews.

Reviewed by: bde

Add smc37c935 chipset support and clean up the code which tries to
allocate a short port range in some alpha configurations.

Submitted by: "Andrew M. Miklic" <miklic@udlkern.fc.hp.com>,
Mark Abene <phiber@radicalmedia.com>

Port ppc driver to alpha.

Submitted by: Andrew M. Miklic <miklic@ibm.net>

$Id$ -> $FreeBSD$

* Add ivars for ISA pnp.
* Move isa_dma* declarations to isavar.h.
* Add a method ISA_DELETE_RESOURCE() to the ISA interface.
* Tidy up include protection defines.

Move IO_PSMSIZE from kbdio.h to isareg.h.

While I am here, correct the values for IO_MDASIZE and IO_CGASIZE; they
should be 12 rather than 16.

Support files for ISA bus.