Merge thorpej-cfargs2.

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 a

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?).

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struct device * -> device_t, struct cfdata * -> cfdata_t
CFATTACH_DECL(*, sizeof(struct device), -> CFATTACH_DECL_NEW(&, 0

Remove clause 3 and 4 from TNF licenses

merge ktrace-lwp.

s/locdesc_t/int/g

adaptions to config_search() change, and minor autoconf fixes, mostly from Havard Eidnes

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

__KERNEL_RCSID()

Use CFATTACH_DECL().

Declare all cfattach structures const.

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.

Fixes and changes from Hauke Fath <hauke@Espresso.Rhein-Neckar.DE>.
* Clean up after briggs@ changes to support bus_dma.
* Add support for reading sMemory resources from nubus cards.
* Add support fo

Fixes and changes from Hauke Fath <hauke@Espresso.Rhein-Neckar.DE>.
* Clean up after briggs@ changes to support bus_dma.
* Add support for reading sMemory resources from nubus cards.
* Add support for old cards with only the board rsrc (NatSemi NB-GPIB, e.g.)
* Add a few more card identifiers.

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Use m68k/m68k/cacheops.[ch]
Use m68k/m68k/bus_dma.c
- Add mainbus_attach_args with bus_space_tag_t and bus_dma_tag_t.
- Use passed-in tags for nubus scan.

Update for changes to config.

Fix tipo inherited from old version of TNF copyright template.

Revamp mainbus and obio autoconfiguration, with some direction (and the
indirect bus code framework) from Jason Thorpe. This allows us to dump
bus_scan() and bus_print(), and move bus_peek() and bus

Revamp mainbus and obio autoconfiguration, with some direction (and the
indirect bus code framework) from Jason Thorpe. This allows us to dump
bus_scan() and bus_print(), and move bus_peek() and bus_mapin() to the
NuBus code (since they'll eventually go away, anyway).

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Convert all foo_match() functions to use a `struct cfdata *' for their
second argument. The NuBus autoconfig code had to be reorganized as a
result of this, and looks much more like a directly-attac

Convert all foo_match() functions to use a `struct cfdata *' for their
second argument. The NuBus autoconfig code had to be reorganized as a
result of this, and looks much more like a directly-attached bus now.
These changes eliminate __BROKEN_INDIRECT_CONFIG.

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Fix two bugs noticed by Taras Ivanenko <ivanenko@ctpa03.mit.edu>
via.c: don't allow spl to remain at splhigh on error.
mainbus.c: Make sure that variable is initialized.

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 bec

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).

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Completely revamp setroot() and friends. Since Chris' version of this code
is close to how I reworked it, I pulled in the (essentially MI) NetBSD/alpha
and added the appropriate support around it.

Completely revamp setroot() and friends. Since Chris' version of this code
is close to how I reworked it, I pulled in the (essentially MI) NetBSD/alpha
and added the appropriate support around it.

- No need for the GENERIC kernel config option.
- NFS-mounted root and swap are supported.
- If we can't figure out where the root filesystem is from what the Booter
tells us, ask the user.
- Split the mainbus autoconfig code to a separate file.

Also, update/add copyrights as appropriate.

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