Merge thorpej-cfargs2.

branches: 1.58.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.57.44;
Whitespace cleanup.

branches: 1.56.30; 1.56.40; 1.56.46;
Split softc/device_t, with misc cosmetic changes.

branches: 1.55.2; 1.55.4;
Remove clause 3 and 4 from TNF licenses

branches: 1.54.14; 1.54.16; 1.54.18;
- some KNF
- use __func__ to print function names

branches: 1.53.6; 1.53.22; 1.53.24; 1.53.30;
Prepare bus_dma(9) structures for sun3 obio devices.

- change find_prom_map() to take paddr_t and return vaddr_t rather than
bus_space_handle_t since bus space handle without bus space tag looks weird
- replace old sun3 obio_find_mapping() with new common find_prom_map()
- add bus_space_vaddr(), from hp300

Don't forget to initialize obio_space_tag.

First attempt at bus_space(9) support for sun3 with common sun68k/bus.c:
- make sun3 port use common sun68k files as much as possible
- add temporary options _SUN2_ in std.sun2 until sun3 can share all
sun68k files (autoconf.c and isr.c are not yet)
- move sun68kvme declaration temporary as well from files.sun68k to files.sun2
- rename and move sun68k_find_prom_map() function to MD sources since it
can't be shared with sun3
- add bus tag members to struct confargs and initilize them where appropriate

XXX1: MD bus_dma(9) backends are not implemented (yet).
XXX2: more code (obio etc.) should be shared among sun3, sun3x and sun2.

branches: 1.49.20; 1.49.22;
merge ktrace-lwp.

s/locdesc_t/int/g

branches: 1.47.2;
convert remaining autoconf bus "submatch" functions to use the new
signature (passing locators), and remove some which obviously don't
serve any purpose
(untested, sorry)

de-__P, remove register, ansify, b* -> mem*, u_int*_t -> uint*_t.

branches: 1.45.8;
__KERNEL_RCSID()

branches: 1.44.2;
Use PAGE_SIZE rather than NBPG.

Add trailing ; to CFATTACH_DECL.

Use CFATTACH_DECL().

Declare all cfattach structures const.

remove trailing \n in panic(). approved perry.

Introduce a new routine, config_match(), which invokes the
cfattach->ca_match function in behalf of the caller. Use it
rather than invoking cfattach->ca_match directly.

Rather than referencing the cfdriver directly in the cfdata entries,
instead use a string naming the driver. The cfdriver is then looked
up in a list which is built at run-time.

branches: 1.37.6;
- vm_offset_t -> vaddr_t, vsize_t, paddr_t
- vm_size_t -> vsize_t
- remove register prefixes
- misc cleanup

branches: 1.36.22;
obio_find_mapping(): int -> vaddr_t where appropriate.

Improve some diagnostics.

Merge arch/sun3x into arch/sun3

branches: 1.33.4;
Update for changes to config.

Kill some noise from -DDEBUG

Move the call to cninit() up a level (easier to find).

branches: 1.30.4;
Fix a bug where OBIO locators were not presented to the children.
Rename obio_alloc to obio_mapin; add comments, etc. (like sun3x)

Nuke sunmon.h, add machdep.h

Use sunmon_abort() instead of mon_panic(), etc.

Fix copyrights (/s/REGENTS/FOUNDATION/)

Use the same names (OBIO_ZS_*) as the sun3x port so we can share zs.

Add a diagnostic to panic when obio config data has a
default address, which is no longer supported on obio.

Make this compile with -Werror -Wall -Wstrict-prototypes
(finally! yea!) Also get rid of __BROKEN_INDIRECT_CONFIG

Most files that were copyright Adam Glass and/or Gordon W. Ross
are now copyright The NetBSD Foundation (rights assigned).

Add a "submatch" function to the obio bus driver so the children
of this driver can get rid of the cruft in their match functions.

backout previous kprintf change

printf -> kprintf, sprintf -> ksprintf

change cfprint_t type definition to take a const char *, rather than
a char *, because that's what was really intended, and because
if the print function modifies the string, various things could become
unhappy (so the string should _not_ be modified).

New autoconfig design that controls attach order.

New device attachment scheme:

- split softc size and match/attach out from cfdriver into
a new struct cfattach.

- new "attach" directive for files.*. May specify the name of
the cfattach structure, so that devices may be easily attached
to parents with different autoconfiguration semantics.

DVMA slave mapping support.

Cleanup

New autoconfig interface to support VME, etc.

Lots of changes. Fairly stable now.

new RCS ID format.

Add obio_find_mapping() for use by devices that need mappings before
autoconfiguration is done. It re-uses the PROM's mappings now.

Tracking 4.4 integration

cosmetic

Add zs0_va, zs1_va

do nothing obio_probe_byte()

canonicalize includes. cleanup. missing copyrights.

sun3 port updated. netboot integrated.

snapshot. for uploading. gets lost in swtch after enablertclock()

'clock' is now part of the standard config system instead of being done
early and in a hacked way. the movement of startrtclock() to below
cpu_startup() allows this.

runs up to and including configure().
todo: exceptions, interrupt support, make isrs affect vector table
kernel/user stacks

lots of changes, too many printfs